Lady’s Gitweb - Gitweb/blob - gitweb.perl

   1 #!/usr/bin/perl
   2
   3 # gitweb - simple web interface to track changes in git repositories
   4 #
   5 # (C) 2005-2006, Kay Sievers <kay.sievers@vrfy.org>
   6 # (C) 2005, Christian Gierke
   7 #
   8 # This program is licensed under the GPLv2
   9
  10 use 5.008;
  11 use strict;
  12 use warnings;
  13 use CGI qw(:standard :escapeHTML -nosticky);
  14 use CGI::Util qw(unescape);
  15 use CGI::Carp qw(fatalsToBrowser set_message);
  16 use Encode;
  17 use Fcntl ':mode';
  18 use File::Find qw();
  19 use File::Basename qw(basename);
  20 use Time::HiRes qw(gettimeofday tv_interval);
  21 binmode STDOUT, ':utf8';
  22
  23 our $t0 = [ gettimeofday() ];
  24 our $number_of_git_cmds = 0;
  25
  26 BEGIN {
  27         CGI->compile() if $ENV{'MOD_PERL'};
  28 }
  29
  30 our $version = "++GIT_VERSION++";
  31
  32 our ($my_url, $my_uri, $base_url, $path_info, $home_link);
  33 sub evaluate_uri {
  34         our $cgi;
  35
  36         our $my_url = $cgi->url();
  37         our $my_uri = $cgi->url(-absolute => 1);
  38
  39         # Base URL for relative URLs in gitweb ($logo, $favicon, ...),
  40         # needed and used only for URLs with nonempty PATH_INFO
  41         our $base_url = $my_url;
  42
  43         # When the script is used as DirectoryIndex, the URL does not contain the name
  44         # of the script file itself, and $cgi->url() fails to strip PATH_INFO, so we
  45         # have to do it ourselves. We make $path_info global because it's also used
  46         # later on.
  47         #
  48         # Another issue with the script being the DirectoryIndex is that the resulting
  49         # $my_url data is not the full script URL: this is good, because we want
  50         # generated links to keep implying the script name if it wasn't explicitly
  51         # indicated in the URL we're handling, but it means that $my_url cannot be used
  52         # as base URL.
  53         # Therefore, if we needed to strip PATH_INFO, then we know that we have
  54         # to build the base URL ourselves:
  55         our $path_info = decode_utf8($ENV{"PATH_INFO"});
  56         if ($path_info) {
  57                 if ($my_url =~ s,\Q$path_info\E$,, &&
  58                     $my_uri =~ s,\Q$path_info\E$,, &&
  59                     defined $ENV{'SCRIPT_NAME'}) {
  60                         $base_url = $cgi->url(-base => 1) . $ENV{'SCRIPT_NAME'};
  61                 }
  62         }
  63
  64         # target of the home link on top of all pages
  65         our $home_link = $my_uri || "/";
  66 }
  67
  68 # core git executable to use
  69 # this can just be "git" if your webserver has a sensible PATH
  70 our $GIT = "++GIT_BINDIR++/git";
  71
  72 # absolute fs-path which will be prepended to the project path
  73 #our $projectroot = "/pub/scm";
  74 our $projectroot = "++GITWEB_PROJECTROOT++";
  75
  76 # fs traversing limit for getting project list
  77 # the number is relative to the projectroot
  78 our $project_maxdepth = "++GITWEB_PROJECT_MAXDEPTH++";
  79
  80 # string of the home link on top of all pages
  81 our $home_link_str = "++GITWEB_HOME_LINK_STR++";
  82
  83 # name of your site or organization to appear in page titles
  84 # replace this with something more descriptive for clearer bookmarks
  85 our $site_name = "++GITWEB_SITENAME++"
  86                  || ($ENV{'SERVER_NAME'} || "Untitled") . " Git";
  87
  88 # html snippet to include in the <head> section of each page
  89 our $site_html_head_string = "++GITWEB_SITE_HTML_HEAD_STRING++";
  90 # filename of html text to include at top of each page
  91 our $site_header = "++GITWEB_SITE_HEADER++";
  92 # html text to include at home page
  93 our $home_text = "++GITWEB_HOMETEXT++";
  94 # filename of html text to include at bottom of each page
  95 our $site_footer = "++GITWEB_SITE_FOOTER++";
  96
  97 # URI of stylesheets
  98 our @stylesheets = ("++GITWEB_CSS++");
  99 # URI of a single stylesheet, which can be overridden in GITWEB_CONFIG.
 100 our $stylesheet = undef;
 101
 102 # URI of GIT logo (72x27 size)
 103 our $logo = "++GITWEB_LOGO++";
 104 # URI of GIT favicon, assumed to be image/png type
 105 our $favicon = "++GITWEB_FAVICON++";
 106 # URI of gitweb.js (JavaScript code for gitweb)
 107 our $javascript = "++GITWEB_JS++";
 108
 109 # URI and label (title) of GIT logo link
 110 #our $logo_url = "http://www.kernel.org/pub/software/scm/git/docs/";
 111 #our $logo_label = "git documentation";
 112 our $logo_url = "http://git-scm.com/";
 113 our $logo_label = "git homepage";
 114
 115 # source of projects list
 116 our $projects_list = "++GITWEB_LIST++";
 117
 118 # the width (in characters) of the projects list "Description" column
 119 our $projects_list_description_width = 25;
 120
 121 # group projects by category on the projects list
 122 # (enabled if this variable evaluates to true)
 123 our $projects_list_group_categories = 0;
 124
 125 # default category if none specified
 126 # (leave the empty string for no category)
 127 our $project_list_default_category = "";
 128
 129 # default order of projects list
 130 # valid values are none, project, descr, owner, and age
 131 our $default_projects_order = "project";
 132
 133 # show repository only if this file exists
 134 # (only effective if this variable evaluates to true)
 135 our $export_ok = "++GITWEB_EXPORT_OK++";
 136
 137 # show repository only if this subroutine returns true
 138 # when given the path to the project, for example:
 139 #    sub { return -e "$_[0]/git-daemon-export-ok"; }
 140 our $export_auth_hook = undef;
 141
 142 # only allow viewing of repositories also shown on the overview page
 143 our $strict_export = "++GITWEB_STRICT_EXPORT++";
 144
 145 # list of git base URLs used for URL to where fetch project from,
 146 # i.e. full URL is "$git_base_url/$project"
 147 our @git_base_url_list = grep { $_ ne '' } ("++GITWEB_BASE_URL++");
 148
 149 # default blob_plain mimetype and default charset for text/plain blob
 150 our $default_blob_plain_mimetype = 'text/plain';
 151 our $default_text_plain_charset  = undef;
 152
 153 # file to use for guessing MIME types before trying /etc/mime.types
 154 # (relative to the current git repository)
 155 our $mimetypes_file = undef;
 156
 157 # assume this charset if line contains non-UTF-8 characters;
 158 # it should be valid encoding (see Encoding::Supported(3pm) for list),
 159 # for which encoding all byte sequences are valid, for example
 160 # 'iso-8859-1' aka 'latin1' (it is decoded without checking, so it
 161 # could be even 'utf-8' for the old behavior)
 162 our $fallback_encoding = 'latin1';
 163
 164 # rename detection options for git-diff and git-diff-tree
 165 # - default is '-M', with the cost proportional to
 166 #   (number of removed files) * (number of new files).
 167 # - more costly is '-C' (which implies '-M'), with the cost proportional to
 168 #   (number of changed files + number of removed files) * (number of new files)
 169 # - even more costly is '-C', '--find-copies-harder' with cost
 170 #   (number of files in the original tree) * (number of new files)
 171 # - one might want to include '-B' option, e.g. '-B', '-M'
 172 our @diff_opts = ('-M'); # taken from git_commit
 173
 174 # Disables features that would allow repository owners to inject script into
 175 # the gitweb domain.
 176 our $prevent_xss = 0;
 177
 178 # Path to the highlight executable to use (must be the one from
 179 # http://www.andre-simon.de due to assumptions about parameters and output).
 180 # Useful if highlight is not installed on your webserver's PATH.
 181 # [Default: highlight]
 182 our $highlight_bin = "++HIGHLIGHT_BIN++";
 183
 184 # information about snapshot formats that gitweb is capable of serving
 185 our %known_snapshot_formats = (
 186         # name => {
 187         #       'display' => display name,
 188         #       'type' => mime type,
 189         #       'suffix' => filename suffix,
 190         #       'format' => --format for git-archive,
 191         #       'compressor' => [compressor command and arguments]
 192         #                       (array reference, optional)
 193         #       'disabled' => boolean (optional)}
 194         #
 195         'tgz' => {
 196                 'display' => 'tar.gz',
 197                 'type' => 'application/x-gzip',
 198                 'suffix' => '.tar.gz',
 199                 'format' => 'tar',
 200                 'compressor' => ['gzip', '-n']},
 201
 202         'tbz2' => {
 203                 'display' => 'tar.bz2',
 204                 'type' => 'application/x-bzip2',
 205                 'suffix' => '.tar.bz2',
 206                 'format' => 'tar',
 207                 'compressor' => ['bzip2']},
 208
 209         'txz' => {
 210                 'display' => 'tar.xz',
 211                 'type' => 'application/x-xz',
 212                 'suffix' => '.tar.xz',
 213                 'format' => 'tar',
 214                 'compressor' => ['xz'],
 215                 'disabled' => 1},
 216
 217         'zip' => {
 218                 'display' => 'zip',
 219                 'type' => 'application/x-zip',
 220                 'suffix' => '.zip',
 221                 'format' => 'zip'},
 222 );
 223
 224 # Aliases so we understand old gitweb.snapshot values in repository
 225 # configuration.
 226 our %known_snapshot_format_aliases = (
 227         'gzip'  => 'tgz',
 228         'bzip2' => 'tbz2',
 229         'xz'    => 'txz',
 230
 231         # backward compatibility: legacy gitweb config support
 232         'x-gzip' => undef, 'gz' => undef,
 233         'x-bzip2' => undef, 'bz2' => undef,
 234         'x-zip' => undef, '' => undef,
 235 );
 236
 237 # Pixel sizes for icons and avatars. If the default font sizes or lineheights
 238 # are changed, it may be appropriate to change these values too via
 239 # $GITWEB_CONFIG.
 240 our %avatar_size = (
 241         'default' => 16,
 242         'double'  => 32
 243 );
 244
 245 # Used to set the maximum load that we will still respond to gitweb queries.
 246 # If server load exceed this value then return "503 server busy" error.
 247 # If gitweb cannot determined server load, it is taken to be 0.
 248 # Leave it undefined (or set to 'undef') to turn off load checking.
 249 our $maxload = 300;
 250
 251 # configuration for 'highlight' (http://www.andre-simon.de/)
 252 # match by basename
 253 our %highlight_basename = (
 254         #'Program' => 'py',
 255         #'Library' => 'py',
 256         'SConstruct' => 'py', # SCons equivalent of Makefile
 257         'Makefile' => 'make',
 258 );
 259 # match by extension
 260 our %highlight_ext = (
 261         # main extensions, defining name of syntax;
 262         # see files in /usr/share/highlight/langDefs/ directory
 263         map { $_ => $_ }
 264                 qw(py c cpp rb java css php sh pl js tex bib xml awk bat ini spec tcl sql make),
 265         # alternate extensions, see /etc/highlight/filetypes.conf
 266         'h' => 'c',
 267         map { $_ => 'sh'  } qw(bash zsh ksh),
 268         map { $_ => 'cpp' } qw(cxx c++ cc),
 269         map { $_ => 'php' } qw(php3 php4 php5 phps),
 270         map { $_ => 'pl'  } qw(perl pm), # perhaps also 'cgi'
 271         map { $_ => 'make'} qw(mak mk),
 272         map { $_ => 'xml' } qw(xhtml html htm),
 273 );
 274
 275 # You define site-wide feature defaults here; override them with
 276 # $GITWEB_CONFIG as necessary.
 277 our %feature = (
 278         # feature => {
 279         #       'sub' => feature-sub (subroutine),
 280         #       'override' => allow-override (boolean),
 281         #       'default' => [ default options...] (array reference)}
 282         #
 283         # if feature is overridable (it means that allow-override has true value),
 284         # then feature-sub will be called with default options as parameters;
 285         # return value of feature-sub indicates if to enable specified feature
 286         #
 287         # if there is no 'sub' key (no feature-sub), then feature cannot be
 288         # overridden
 289         #
 290         # use gitweb_get_feature(<feature>) to retrieve the <feature> value
 291         # (an array) or gitweb_check_feature(<feature>) to check if <feature>
 292         # is enabled
 293
 294         # Enable the 'blame' blob view, showing the last commit that modified
 295         # each line in the file. This can be very CPU-intensive.
 296
 297         # To enable system wide have in $GITWEB_CONFIG
 298         # $feature{'blame'}{'default'} = [1];
 299         # To have project specific config enable override in $GITWEB_CONFIG
 300         # $feature{'blame'}{'override'} = 1;
 301         # and in project config gitweb.blame = 0|1;
 302         'blame' => {
 303                 'sub' => sub { feature_bool('blame', @_) },
 304                 'override' => 0,
 305                 'default' => [0]},
 306
 307         # Enable the 'snapshot' link, providing a compressed archive of any
 308         # tree. This can potentially generate high traffic if you have large
 309         # project.
 310
 311         # Value is a list of formats defined in %known_snapshot_formats that
 312         # you wish to offer.
 313         # To disable system wide have in $GITWEB_CONFIG
 314         # $feature{'snapshot'}{'default'} = [];
 315         # To have project specific config enable override in $GITWEB_CONFIG
 316         # $feature{'snapshot'}{'override'} = 1;
 317         # and in project config, a comma-separated list of formats or "none"
 318         # to disable.  Example: gitweb.snapshot = tbz2,zip;
 319         'snapshot' => {
 320                 'sub' => \&feature_snapshot,
 321                 'override' => 0,
 322                 'default' => ['tgz']},
 323
 324         # Enable text search, which will list the commits which match author,
 325         # committer or commit text to a given string.  Enabled by default.
 326         # Project specific override is not supported.
 327         #
 328         # Note that this controls all search features, which means that if
 329         # it is disabled, then 'grep' and 'pickaxe' search would also be
 330         # disabled.
 331         'search' => {
 332                 'override' => 0,
 333                 'default' => [1]},
 334
 335         # Enable grep search, which will list the files in currently selected
 336         # tree containing the given string. Enabled by default. This can be
 337         # potentially CPU-intensive, of course.
 338         # Note that you need to have 'search' feature enabled too.
 339
 340         # To enable system wide have in $GITWEB_CONFIG
 341         # $feature{'grep'}{'default'} = [1];
 342         # To have project specific config enable override in $GITWEB_CONFIG
 343         # $feature{'grep'}{'override'} = 1;
 344         # and in project config gitweb.grep = 0|1;
 345         'grep' => {
 346                 'sub' => sub { feature_bool('grep', @_) },
 347                 'override' => 0,
 348                 'default' => [1]},
 349
 350         # Enable the pickaxe search, which will list the commits that modified
 351         # a given string in a file. This can be practical and quite faster
 352         # alternative to 'blame', but still potentially CPU-intensive.
 353         # Note that you need to have 'search' feature enabled too.
 354
 355         # To enable system wide have in $GITWEB_CONFIG
 356         # $feature{'pickaxe'}{'default'} = [1];
 357         # To have project specific config enable override in $GITWEB_CONFIG
 358         # $feature{'pickaxe'}{'override'} = 1;
 359         # and in project config gitweb.pickaxe = 0|1;
 360         'pickaxe' => {
 361                 'sub' => sub { feature_bool('pickaxe', @_) },
 362                 'override' => 0,
 363                 'default' => [1]},
 364
 365         # Enable showing size of blobs in a 'tree' view, in a separate
 366         # column, similar to what 'ls -l' does.  This cost a bit of IO.
 367
 368         # To disable system wide have in $GITWEB_CONFIG
 369         # $feature{'show-sizes'}{'default'} = [0];
 370         # To have project specific config enable override in $GITWEB_CONFIG
 371         # $feature{'show-sizes'}{'override'} = 1;
 372         # and in project config gitweb.showsizes = 0|1;
 373         'show-sizes' => {
 374                 'sub' => sub { feature_bool('showsizes', @_) },
 375                 'override' => 0,
 376                 'default' => [1]},
 377
 378         # Make gitweb use an alternative format of the URLs which can be
 379         # more readable and natural-looking: project name is embedded
 380         # directly in the path and the query string contains other
 381         # auxiliary information. All gitweb installations recognize
 382         # URL in either format; this configures in which formats gitweb
 383         # generates links.
 384
 385         # To enable system wide have in $GITWEB_CONFIG
 386         # $feature{'pathinfo'}{'default'} = [1];
 387         # Project specific override is not supported.
 388
 389         # Note that you will need to change the default location of CSS,
 390         # favicon, logo and possibly other files to an absolute URL. Also,
 391         # if gitweb.cgi serves as your indexfile, you will need to force
 392         # $my_uri to contain the script name in your $GITWEB_CONFIG.
 393         'pathinfo' => {
 394                 'override' => 0,
 395                 'default' => [0]},
 396
 397         # Make gitweb consider projects in project root subdirectories
 398         # to be forks of existing projects. Given project $projname.git,
 399         # projects matching $projname/*.git will not be shown in the main
 400         # projects list, instead a '+' mark will be added to $projname
 401         # there and a 'forks' view will be enabled for the project, listing
 402         # all the forks. If project list is taken from a file, forks have
 403         # to be listed after the main project.
 404
 405         # To enable system wide have in $GITWEB_CONFIG
 406         # $feature{'forks'}{'default'} = [1];
 407         # Project specific override is not supported.
 408         'forks' => {
 409                 'override' => 0,
 410                 'default' => [0]},
 411
 412         # Insert custom links to the action bar of all project pages.
 413         # This enables you mainly to link to third-party scripts integrating
 414         # into gitweb; e.g. git-browser for graphical history representation
 415         # or custom web-based repository administration interface.
 416
 417         # The 'default' value consists of a list of triplets in the form
 418         # (label, link, position) where position is the label after which
 419         # to insert the link and link is a format string where %n expands
 420         # to the project name, %f to the project path within the filesystem,
 421         # %h to the current hash (h gitweb parameter) and %b to the current
 422         # hash base (hb gitweb parameter); %% expands to %.
 423
 424         # To enable system wide have in $GITWEB_CONFIG e.g.
 425         # $feature{'actions'}{'default'} = [('graphiclog',
 426         #       '/git-browser/by-commit.html?r=%n', 'summary')];
 427         # Project specific override is not supported.
 428         'actions' => {
 429                 'override' => 0,
 430                 'default' => []},
 431
 432         # Allow gitweb scan project content tags of project repository,
 433         # and display the popular Web 2.0-ish "tag cloud" near the projects
 434         # list.  Note that this is something COMPLETELY different from the
 435         # normal Git tags.
 436
 437         # gitweb by itself can show existing tags, but it does not handle
 438         # tagging itself; you need to do it externally, outside gitweb.
 439         # The format is described in git_get_project_ctags() subroutine.
 440         # You may want to install the HTML::TagCloud Perl module to get
 441         # a pretty tag cloud instead of just a list of tags.
 442
 443         # To enable system wide have in $GITWEB_CONFIG
 444         # $feature{'ctags'}{'default'} = [1];
 445         # Project specific override is not supported.
 446
 447         # In the future whether ctags editing is enabled might depend
 448         # on the value, but using 1 should always mean no editing of ctags.
 449         'ctags' => {
 450                 'override' => 0,
 451                 'default' => [0]},
 452
 453         # The maximum number of patches in a patchset generated in patch
 454         # view. Set this to 0 or undef to disable patch view, or to a
 455         # negative number to remove any limit.
 456
 457         # To disable system wide have in $GITWEB_CONFIG
 458         # $feature{'patches'}{'default'} = [0];
 459         # To have project specific config enable override in $GITWEB_CONFIG
 460         # $feature{'patches'}{'override'} = 1;
 461         # and in project config gitweb.patches = 0|n;
 462         # where n is the maximum number of patches allowed in a patchset.
 463         'patches' => {
 464                 'sub' => \&feature_patches,
 465                 'override' => 0,
 466                 'default' => [16]},
 467
 468         # Avatar support. When this feature is enabled, views such as
 469         # shortlog or commit will display an avatar associated with
 470         # the email of the committer(s) and/or author(s).
 471
 472         # Currently available providers are gravatar and picon.
 473         # If an unknown provider is specified, the feature is disabled.
 474
 475         # Gravatar depends on Digest::MD5.
 476         # Picon currently relies on the indiana.edu database.
 477
 478         # To enable system wide have in $GITWEB_CONFIG
 479         # $feature{'avatar'}{'default'} = ['<provider>'];
 480         # where <provider> is either gravatar or picon.
 481         # To have project specific config enable override in $GITWEB_CONFIG
 482         # $feature{'avatar'}{'override'} = 1;
 483         # and in project config gitweb.avatar = <provider>;
 484         'avatar' => {
 485                 'sub' => \&feature_avatar,
 486                 'override' => 0,
 487                 'default' => ['']},
 488
 489         # Enable displaying how much time and how many git commands
 490         # it took to generate and display page.  Disabled by default.
 491         # Project specific override is not supported.
 492         'timed' => {
 493                 'override' => 0,
 494                 'default' => [0]},
 495
 496         # Enable turning some links into links to actions which require
 497         # JavaScript to run (like 'blame_incremental').  Not enabled by
 498         # default.  Project specific override is currently not supported.
 499         'javascript-actions' => {
 500                 'override' => 0,
 501                 'default' => [0]},
 502
 503         # Enable and configure ability to change common timezone for dates
 504         # in gitweb output via JavaScript.  Enabled by default.
 505         # Project specific override is not supported.
 506         'javascript-timezone' => {
 507                 'override' => 0,
 508                 'default' => [
 509                         'local',     # default timezone: 'utc', 'local', or '(-|+)HHMM' format,
 510                                      # or undef to turn off this feature
 511                         'gitweb_tz', # name of cookie where to store selected timezone
 512                         'datetime',  # CSS class used to mark up dates for manipulation
 513                 ]},
 514
 515         # Syntax highlighting support. This is based on Daniel Svensson's
 516         # and Sham Chukoury's work in gitweb-xmms2.git.
 517         # It requires the 'highlight' program present in $PATH,
 518         # and therefore is disabled by default.
 519
 520         # To enable system wide have in $GITWEB_CONFIG
 521         # $feature{'highlight'}{'default'} = [1];
 522
 523         'highlight' => {
 524                 'sub' => sub { feature_bool('highlight', @_) },
 525                 'override' => 0,
 526                 'default' => [0]},
 527
 528         # Enable displaying of remote heads in the heads list
 529
 530         # To enable system wide have in $GITWEB_CONFIG
 531         # $feature{'remote_heads'}{'default'} = [1];
 532         # To have project specific config enable override in $GITWEB_CONFIG
 533         # $feature{'remote_heads'}{'override'} = 1;
 534         # and in project config gitweb.remote_heads = 0|1;
 535         'remote_heads' => {
 536                 'sub' => sub { feature_bool('remote_heads', @_) },
 537                 'override' => 0,
 538                 'default' => [0]},
 539 );
 540
 541 sub gitweb_get_feature {
 542         my ($name) = @_;
 543         return unless exists $feature{$name};
 544         my ($sub, $override, @defaults) = (
 545                 $feature{$name}{'sub'},
 546                 $feature{$name}{'override'},
 547                 @{$feature{$name}{'default'}});
 548         # project specific override is possible only if we have project
 549         our $git_dir; # global variable, declared later
 550         if (!$override || !defined $git_dir) {
 551                 return @defaults;
 552         }
 553         if (!defined $sub) {
 554                 warn "feature $name is not overridable";
 555                 return @defaults;
 556         }
 557         return $sub->(@defaults);
 558 }
 559
 560 # A wrapper to check if a given feature is enabled.
 561 # With this, you can say
 562 #
 563 #   my $bool_feat = gitweb_check_feature('bool_feat');
 564 #   gitweb_check_feature('bool_feat') or somecode;
 565 #
 566 # instead of
 567 #
 568 #   my ($bool_feat) = gitweb_get_feature('bool_feat');
 569 #   (gitweb_get_feature('bool_feat'))[0] or somecode;
 570 #
 571 sub gitweb_check_feature {
 572         return (gitweb_get_feature(@_))[0];
 573 }
 574
 575
 576 sub feature_bool {
 577         my $key = shift;
 578         my ($val) = git_get_project_config($key, '--bool');
 579
 580         if (!defined $val) {
 581                 return ($_[0]);
 582         } elsif ($val eq 'true') {
 583                 return (1);
 584         } elsif ($val eq 'false') {
 585                 return (0);
 586         }
 587 }
 588
 589 sub feature_snapshot {
 590         my (@fmts) = @_;
 591
 592         my ($val) = git_get_project_config('snapshot');
 593
 594         if ($val) {
 595                 @fmts = ($val eq 'none' ? () : split /\s*[,\s]\s*/, $val);
 596         }
 597
 598         return @fmts;
 599 }
 600
 601 sub feature_patches {
 602         my @val = (git_get_project_config('patches', '--int'));
 603
 604         if (@val) {
 605                 return @val;
 606         }
 607
 608         return ($_[0]);
 609 }
 610
 611 sub feature_avatar {
 612         my @val = (git_get_project_config('avatar'));
 613
 614         return @val ? @val : @_;
 615 }
 616
 617 # checking HEAD file with -e is fragile if the repository was
 618 # initialized long time ago (i.e. symlink HEAD) and was pack-ref'ed
 619 # and then pruned.
 620 sub check_head_link {
 621         my ($dir) = @_;
 622         my $headfile = "$dir/HEAD";
 623         return ((-e $headfile) ||
 624                 (-l $headfile && readlink($headfile) =~ /^refs\/heads\//));
 625 }
 626
 627 sub check_export_ok {
 628         my ($dir) = @_;
 629         return (check_head_link($dir) &&
 630                 (!$export_ok || -e "$dir/$export_ok") &&
 631                 (!$export_auth_hook || $export_auth_hook->($dir)));
 632 }
 633
 634 # process alternate names for backward compatibility
 635 # filter out unsupported (unknown) snapshot formats
 636 sub filter_snapshot_fmts {
 637         my @fmts = @_;
 638
 639         @fmts = map {
 640                 exists $known_snapshot_format_aliases{$_} ?
 641                        $known_snapshot_format_aliases{$_} : $_} @fmts;
 642         @fmts = grep {
 643                 exists $known_snapshot_formats{$_} &&
 644                 !$known_snapshot_formats{$_}{'disabled'}} @fmts;
 645 }
 646
 647 # If it is set to code reference, it is code that it is to be run once per
 648 # request, allowing updating configurations that change with each request,
 649 # while running other code in config file only once.
 650 #
 651 # Otherwise, if it is false then gitweb would process config file only once;
 652 # if it is true then gitweb config would be run for each request.
 653 our $per_request_config = 1;
 654
 655 # read and parse gitweb config file given by its parameter.
 656 # returns true on success, false on recoverable error, allowing
 657 # to chain this subroutine, using first file that exists.
 658 # dies on errors during parsing config file, as it is unrecoverable.
 659 sub read_config_file {
 660         my $filename = shift;
 661         return unless defined $filename;
 662         # die if there are errors parsing config file
 663         if (-e $filename) {
 664                 do $filename;
 665                 die $@ if $@;
 666                 return 1;
 667         }
 668         return;
 669 }
 670
 671 our ($GITWEB_CONFIG, $GITWEB_CONFIG_SYSTEM, $GITWEB_CONFIG_COMMON);
 672 sub evaluate_gitweb_config {
 673         our $GITWEB_CONFIG = $ENV{'GITWEB_CONFIG'} || "++GITWEB_CONFIG++";
 674         our $GITWEB_CONFIG_SYSTEM = $ENV{'GITWEB_CONFIG_SYSTEM'} || "++GITWEB_CONFIG_SYSTEM++";
 675         our $GITWEB_CONFIG_COMMON = $ENV{'GITWEB_CONFIG_COMMON'} || "++GITWEB_CONFIG_COMMON++";
 676
 677         # Protect agains duplications of file names, to not read config twice.
 678         # Only one of $GITWEB_CONFIG and $GITWEB_CONFIG_SYSTEM is used, so
 679         # there possibility of duplication of filename there doesn't matter.
 680         $GITWEB_CONFIG = ""        if ($GITWEB_CONFIG eq $GITWEB_CONFIG_COMMON);
 681         $GITWEB_CONFIG_SYSTEM = "" if ($GITWEB_CONFIG_SYSTEM eq $GITWEB_CONFIG_COMMON);
 682
 683         # Common system-wide settings for convenience.
 684         # Those settings can be ovverriden by GITWEB_CONFIG or GITWEB_CONFIG_SYSTEM.
 685         read_config_file($GITWEB_CONFIG_COMMON);
 686
 687         # Use first config file that exists.  This means use the per-instance
 688         # GITWEB_CONFIG if exists, otherwise use GITWEB_SYSTEM_CONFIG.
 689         read_config_file($GITWEB_CONFIG) and return;
 690         read_config_file($GITWEB_CONFIG_SYSTEM);
 691 }
 692
 693 # Get loadavg of system, to compare against $maxload.
 694 # Currently it requires '/proc/loadavg' present to get loadavg;
 695 # if it is not present it returns 0, which means no load checking.
 696 sub get_loadavg {
 697         if( -e '/proc/loadavg' ){
 698                 open my $fd, '<', '/proc/loadavg'
 699                         or return 0;
 700                 my @load = split(/\s+/, scalar <$fd>);
 701                 close $fd;
 702
 703                 # The first three columns measure CPU and IO utilization of the last one,
 704                 # five, and 10 minute periods.  The fourth column shows the number of
 705                 # currently running processes and the total number of processes in the m/n
 706                 # format.  The last column displays the last process ID used.
 707                 return $load[0] || 0;
 708         }
 709         # additional checks for load average should go here for things that don't export
 710         # /proc/loadavg
 711
 712         return 0;
 713 }
 714
 715 # version of the core git binary
 716 our $git_version;
 717 sub evaluate_git_version {
 718         our $git_version = qx("$GIT" --version) =~ m/git version (.*)$/ ? $1 : "unknown";
 719         $number_of_git_cmds++;
 720 }
 721
 722 sub check_loadavg {
 723         if (defined $maxload && get_loadavg() > $maxload) {
 724                 die_error(503, "The load average on the server is too high");
 725         }
 726 }
 727
 728 # ======================================================================
 729 # input validation and dispatch
 730
 731 # input parameters can be collected from a variety of sources (presently, CGI
 732 # and PATH_INFO), so we define an %input_params hash that collects them all
 733 # together during validation: this allows subsequent uses (e.g. href()) to be
 734 # agnostic of the parameter origin
 735
 736 our %input_params = ();
 737
 738 # input parameters are stored with the long parameter name as key. This will
 739 # also be used in the href subroutine to convert parameters to their CGI
 740 # equivalent, and since the href() usage is the most frequent one, we store
 741 # the name -> CGI key mapping here, instead of the reverse.
 742 #
 743 # XXX: Warning: If you touch this, check the search form for updating,
 744 # too.
 745
 746 our @cgi_param_mapping = (
 747         project => "p",
 748         action => "a",
 749         file_name => "f",
 750         file_parent => "fp",
 751         hash => "h",
 752         hash_parent => "hp",
 753         hash_base => "hb",
 754         hash_parent_base => "hpb",
 755         page => "pg",
 756         order => "o",
 757         searchtext => "s",
 758         searchtype => "st",
 759         snapshot_format => "sf",
 760         extra_options => "opt",
 761         search_use_regexp => "sr",
 762         ctag => "by_tag",
 763         diff_style => "ds",
 764         project_filter => "pf",
 765         # this must be last entry (for manipulation from JavaScript)
 766         javascript => "js"
 767 );
 768 our %cgi_param_mapping = @cgi_param_mapping;
 769
 770 # we will also need to know the possible actions, for validation
 771 our %actions = (
 772         "blame" => \&git_blame,
 773         "blame_incremental" => \&git_blame_incremental,
 774         "blame_data" => \&git_blame_data,
 775         "blobdiff" => \&git_blobdiff,
 776         "blobdiff_plain" => \&git_blobdiff_plain,
 777         "blob" => \&git_blob,
 778         "blob_plain" => \&git_blob_plain,
 779         "commitdiff" => \&git_commitdiff,
 780         "commitdiff_plain" => \&git_commitdiff_plain,
 781         "commit" => \&git_commit,
 782         "forks" => \&git_forks,
 783         "heads" => \&git_heads,
 784         "history" => \&git_history,
 785         "log" => \&git_log,
 786         "patch" => \&git_patch,
 787         "patches" => \&git_patches,
 788         "remotes" => \&git_remotes,
 789         "rss" => \&git_rss,
 790         "atom" => \&git_atom,
 791         "search" => \&git_search,
 792         "search_help" => \&git_search_help,
 793         "shortlog" => \&git_shortlog,
 794         "summary" => \&git_summary,
 795         "tag" => \&git_tag,
 796         "tags" => \&git_tags,
 797         "tree" => \&git_tree,
 798         "snapshot" => \&git_snapshot,
 799         "object" => \&git_object,
 800         # those below don't need $project
 801         "opml" => \&git_opml,
 802         "project_list" => \&git_project_list,
 803         "project_index" => \&git_project_index,
 804 );
 805
 806 # finally, we have the hash of allowed extra_options for the commands that
 807 # allow them
 808 our %allowed_options = (
 809         "--no-merges" => [ qw(rss atom log shortlog history) ],
 810 );
 811
 812 # fill %input_params with the CGI parameters. All values except for 'opt'
 813 # should be single values, but opt can be an array. We should probably
 814 # build an array of parameters that can be multi-valued, but since for the time
 815 # being it's only this one, we just single it out
 816 sub evaluate_query_params {
 817         our $cgi;
 818
 819         while (my ($name, $symbol) = each %cgi_param_mapping) {
 820                 if ($symbol eq 'opt') {
 821                         $input_params{$name} = [ map { decode_utf8($_) } $cgi->param($symbol) ];
 822                 } else {
 823                         $input_params{$name} = decode_utf8($cgi->param($symbol));
 824                 }
 825         }
 826 }
 827
 828 # now read PATH_INFO and update the parameter list for missing parameters
 829 sub evaluate_path_info {
 830         return if defined $input_params{'project'};
 831         return if !$path_info;
 832         $path_info =~ s,^/+,,;
 833         return if !$path_info;
 834
 835         # find which part of PATH_INFO is project
 836         my $project = $path_info;
 837         $project =~ s,/+$,,;
 838         while ($project && !check_head_link("$projectroot/$project")) {
 839                 $project =~ s,/*[^/]*$,,;
 840         }
 841         return unless $project;
 842         $input_params{'project'} = $project;
 843
 844         # do not change any parameters if an action is given using the query string
 845         return if $input_params{'action'};
 846         $path_info =~ s,^\Q$project\E/*,,;
 847
 848         # next, check if we have an action
 849         my $action = $path_info;
 850         $action =~ s,/.*$,,;
 851         if (exists $actions{$action}) {
 852                 $path_info =~ s,^$action/*,,;
 853                 $input_params{'action'} = $action;
 854         }
 855
 856         # list of actions that want hash_base instead of hash, but can have no
 857         # pathname (f) parameter
 858         my @wants_base = (
 859                 'tree',
 860                 'history',
 861         );
 862
 863         # we want to catch, among others
 864         # [$hash_parent_base[:$file_parent]..]$hash_parent[:$file_name]
 865         my ($parentrefname, $parentpathname, $refname, $pathname) =
 866                 ($path_info =~ /^(?:(.+?)(?::(.+))?\.\.)?([^:]+?)?(?::(.+))?$/);
 867
 868         # first, analyze the 'current' part
 869         if (defined $pathname) {
 870                 # we got "branch:filename" or "branch:dir/"
 871                 # we could use git_get_type(branch:pathname), but:
 872                 # - it needs $git_dir
 873                 # - it does a git() call
 874                 # - the convention of terminating directories with a slash
 875                 #   makes it superfluous
 876                 # - embedding the action in the PATH_INFO would make it even
 877                 #   more superfluous
 878                 $pathname =~ s,^/+,,;
 879                 if (!$pathname || substr($pathname, -1) eq "/") {
 880                         $input_params{'action'} ||= "tree";
 881                         $pathname =~ s,/$,,;
 882                 } else {
 883                         # the default action depends on whether we had parent info
 884                         # or not
 885                         if ($parentrefname) {
 886                                 $input_params{'action'} ||= "blobdiff_plain";
 887                         } else {
 888                                 $input_params{'action'} ||= "blob_plain";
 889                         }
 890                 }
 891                 $input_params{'hash_base'} ||= $refname;
 892                 $input_params{'file_name'} ||= $pathname;
 893         } elsif (defined $refname) {
 894                 # we got "branch". In this case we have to choose if we have to
 895                 # set hash or hash_base.
 896                 #
 897                 # Most of the actions without a pathname only want hash to be
 898                 # set, except for the ones specified in @wants_base that want
 899                 # hash_base instead. It should also be noted that hand-crafted
 900                 # links having 'history' as an action and no pathname or hash
 901                 # set will fail, but that happens regardless of PATH_INFO.
 902                 if (defined $parentrefname) {
 903                         # if there is parent let the default be 'shortlog' action
 904                         # (for http://git.example.com/repo.git/A..B links); if there
 905                         # is no parent, dispatch will detect type of object and set
 906                         # action appropriately if required (if action is not set)
 907                         $input_params{'action'} ||= "shortlog";
 908                 }
 909                 if ($input_params{'action'} &&
 910                     grep { $_ eq $input_params{'action'} } @wants_base) {
 911                         $input_params{'hash_base'} ||= $refname;
 912                 } else {
 913                         $input_params{'hash'} ||= $refname;
 914                 }
 915         }
 916
 917         # next, handle the 'parent' part, if present
 918         if (defined $parentrefname) {
 919                 # a missing pathspec defaults to the 'current' filename, allowing e.g.
 920                 # someproject/blobdiff/oldrev..newrev:/filename
 921                 if ($parentpathname) {
 922                         $parentpathname =~ s,^/+,,;
 923                         $parentpathname =~ s,/$,,;
 924                         $input_params{'file_parent'} ||= $parentpathname;
 925                 } else {
 926                         $input_params{'file_parent'} ||= $input_params{'file_name'};
 927                 }
 928                 # we assume that hash_parent_base is wanted if a path was specified,
 929                 # or if the action wants hash_base instead of hash
 930                 if (defined $input_params{'file_parent'} ||
 931                         grep { $_ eq $input_params{'action'} } @wants_base) {
 932                         $input_params{'hash_parent_base'} ||= $parentrefname;
 933                 } else {
 934                         $input_params{'hash_parent'} ||= $parentrefname;
 935                 }
 936         }
 937
 938         # for the snapshot action, we allow URLs in the form
 939         # $project/snapshot/$hash.ext
 940         # where .ext determines the snapshot and gets removed from the
 941         # passed $refname to provide the $hash.
 942         #
 943         # To be able to tell that $refname includes the format extension, we
 944         # require the following two conditions to be satisfied:
 945         # - the hash input parameter MUST have been set from the $refname part
 946         #   of the URL (i.e. they must be equal)
 947         # - the snapshot format MUST NOT have been defined already (e.g. from
 948         #   CGI parameter sf)
 949         # It's also useless to try any matching unless $refname has a dot,
 950         # so we check for that too
 951         if (defined $input_params{'action'} &&
 952                 $input_params{'action'} eq 'snapshot' &&
 953                 defined $refname && index($refname, '.') != -1 &&
 954                 $refname eq $input_params{'hash'} &&
 955                 !defined $input_params{'snapshot_format'}) {
 956                 # We loop over the known snapshot formats, checking for
 957                 # extensions. Allowed extensions are both the defined suffix
 958                 # (which includes the initial dot already) and the snapshot
 959                 # format key itself, with a prepended dot
 960                 while (my ($fmt, $opt) = each %known_snapshot_formats) {
 961                         my $hash = $refname;
 962                         unless ($hash =~ s/(\Q$opt->{'suffix'}\E|\Q.$fmt\E)$//) {
 963                                 next;
 964                         }
 965                         my $sfx = $1;
 966                         # a valid suffix was found, so set the snapshot format
 967                         # and reset the hash parameter
 968                         $input_params{'snapshot_format'} = $fmt;
 969                         $input_params{'hash'} = $hash;
 970                         # we also set the format suffix to the one requested
 971                         # in the URL: this way a request for e.g. .tgz returns
 972                         # a .tgz instead of a .tar.gz
 973                         $known_snapshot_formats{$fmt}{'suffix'} = $sfx;
 974                         last;
 975                 }
 976         }
 977 }
 978
 979 our ($action, $project, $file_name, $file_parent, $hash, $hash_parent, $hash_base,
 980      $hash_parent_base, @extra_options, $page, $searchtype, $search_use_regexp,
 981      $searchtext, $search_regexp, $project_filter);
 982 sub evaluate_and_validate_params {
 983         our $action = $input_params{'action'};
 984         if (defined $action) {
 985                 if (!validate_action($action)) {
 986                         die_error(400, "Invalid action parameter");
 987                 }
 988         }
 989
 990         # parameters which are pathnames
 991         our $project = $input_params{'project'};
 992         if (defined $project) {
 993                 if (!validate_project($project)) {
 994                         undef $project;
 995                         die_error(404, "No such project");
 996                 }
 997         }
 998
 999         our $project_filter = $input_params{'project_filter'};
1000         if (defined $project_filter) {
1001                 if (!validate_pathname($project_filter)) {
1002                         die_error(404, "Invalid project_filter parameter");
1003                 }
1004         }
1005
1006         our $file_name = $input_params{'file_name'};
1007         if (defined $file_name) {
1008                 if (!validate_pathname($file_name)) {
1009                         die_error(400, "Invalid file parameter");
1010                 }
1011         }
1012
1013         our $file_parent = $input_params{'file_parent'};
1014         if (defined $file_parent) {
1015                 if (!validate_pathname($file_parent)) {
1016                         die_error(400, "Invalid file parent parameter");
1017                 }
1018         }
1019
1020         # parameters which are refnames
1021         our $hash = $input_params{'hash'};
1022         if (defined $hash) {
1023                 if (!validate_refname($hash)) {
1024                         die_error(400, "Invalid hash parameter");
1025                 }
1026         }
1027
1028         our $hash_parent = $input_params{'hash_parent'};
1029         if (defined $hash_parent) {
1030                 if (!validate_refname($hash_parent)) {
1031                         die_error(400, "Invalid hash parent parameter");
1032                 }
1033         }
1034
1035         our $hash_base = $input_params{'hash_base'};
1036         if (defined $hash_base) {
1037                 if (!validate_refname($hash_base)) {
1038                         die_error(400, "Invalid hash base parameter");
1039                 }
1040         }
1041
1042         our @extra_options = @{$input_params{'extra_options'}};
1043         # @extra_options is always defined, since it can only be (currently) set from
1044         # CGI, and $cgi->param() returns the empty array in array context if the param
1045         # is not set
1046         foreach my $opt (@extra_options) {
1047                 if (not exists $allowed_options{$opt}) {
1048                         die_error(400, "Invalid option parameter");
1049                 }
1050                 if (not grep(/^$action$/, @{$allowed_options{$opt}})) {
1051                         die_error(400, "Invalid option parameter for this action");
1052                 }
1053         }
1054
1055         our $hash_parent_base = $input_params{'hash_parent_base'};
1056         if (defined $hash_parent_base) {
1057                 if (!validate_refname($hash_parent_base)) {
1058                         die_error(400, "Invalid hash parent base parameter");
1059                 }
1060         }
1061
1062         # other parameters
1063         our $page = $input_params{'page'};
1064         if (defined $page) {
1065                 if ($page =~ m/[^0-9]/) {
1066                         die_error(400, "Invalid page parameter");
1067                 }
1068         }
1069
1070         our $searchtype = $input_params{'searchtype'};
1071         if (defined $searchtype) {
1072                 if ($searchtype =~ m/[^a-z]/) {
1073                         die_error(400, "Invalid searchtype parameter");
1074                 }
1075         }
1076
1077         our $search_use_regexp = $input_params{'search_use_regexp'};
1078
1079         our $searchtext = $input_params{'searchtext'};
1080         our $search_regexp;
1081         if (defined $searchtext) {
1082                 if (length($searchtext) < 2) {
1083                         die_error(403, "At least two characters are required for search parameter");
1084                 }
1085                 if ($search_use_regexp) {
1086                         $search_regexp = $searchtext;
1087                         if (!eval { qr/$search_regexp/; 1; }) {
1088                                 (my $error = $@) =~ s/ at \S+ line \d+.*\n?//;
1089                                 die_error(400, "Invalid search regexp '$search_regexp'",
1090                                           esc_html($error));
1091                         }
1092                 } else {
1093                         $search_regexp = quotemeta $searchtext;
1094                 }
1095         }
1096 }
1097
1098 # path to the current git repository
1099 our $git_dir;
1100 sub evaluate_git_dir {
1101         our $git_dir = "$projectroot/$project" if $project;
1102 }
1103
1104 our (@snapshot_fmts, $git_avatar);
1105 sub configure_gitweb_features {
1106         # list of supported snapshot formats
1107         our @snapshot_fmts = gitweb_get_feature('snapshot');
1108         @snapshot_fmts = filter_snapshot_fmts(@snapshot_fmts);
1109
1110         # check that the avatar feature is set to a known provider name,
1111         # and for each provider check if the dependencies are satisfied.
1112         # if the provider name is invalid or the dependencies are not met,
1113         # reset $git_avatar to the empty string.
1114         our ($git_avatar) = gitweb_get_feature('avatar');
1115         if ($git_avatar eq 'gravatar') {
1116                 $git_avatar = '' unless (eval { require Digest::MD5; 1; });
1117         } elsif ($git_avatar eq 'picon') {
1118                 # no dependencies
1119         } else {
1120                 $git_avatar = '';
1121         }
1122 }
1123
1124 # custom error handler: 'die <message>' is Internal Server Error
1125 sub handle_errors_html {
1126         my $msg = shift; # it is already HTML escaped
1127
1128         # to avoid infinite loop where error occurs in die_error,
1129         # change handler to default handler, disabling handle_errors_html
1130         set_message("Error occured when inside die_error:\n$msg");
1131
1132         # you cannot jump out of die_error when called as error handler;
1133         # the subroutine set via CGI::Carp::set_message is called _after_
1134         # HTTP headers are already written, so it cannot write them itself
1135         die_error(undef, undef, $msg, -error_handler => 1, -no_http_header => 1);
1136 }
1137 set_message(\&handle_errors_html);
1138
1139 # dispatch
1140 sub dispatch {
1141         if (!defined $action) {
1142                 if (defined $hash) {
1143                         $action = git_get_type($hash);
1144                         $action or die_error(404, "Object does not exist");
1145                 } elsif (defined $hash_base && defined $file_name) {
1146                         $action = git_get_type("$hash_base:$file_name");
1147                         $action or die_error(404, "File or directory does not exist");
1148                 } elsif (defined $project) {
1149                         $action = 'summary';
1150                 } else {
1151                         $action = 'project_list';
1152                 }
1153         }
1154         if (!defined($actions{$action})) {
1155                 die_error(400, "Unknown action");
1156         }
1157         if ($action !~ m/^(?:opml|project_list|project_index)$/ &&
1158             !$project) {
1159                 die_error(400, "Project needed");
1160         }
1161         $actions{$action}->();
1162 }
1163
1164 sub reset_timer {
1165         our $t0 = [ gettimeofday() ]
1166                 if defined $t0;
1167         our $number_of_git_cmds = 0;
1168 }
1169
1170 our $first_request = 1;
1171 sub run_request {
1172         reset_timer();
1173
1174         evaluate_uri();
1175         if ($first_request) {
1176                 evaluate_gitweb_config();
1177                 evaluate_git_version();
1178         }
1179         if ($per_request_config) {
1180                 if (ref($per_request_config) eq 'CODE') {
1181                         $per_request_config->();
1182                 } elsif (!$first_request) {
1183                         evaluate_gitweb_config();
1184                 }
1185         }
1186         check_loadavg();
1187
1188         # $projectroot and $projects_list might be set in gitweb config file
1189         $projects_list ||= $projectroot;
1190
1191         evaluate_query_params();
1192         evaluate_path_info();
1193         evaluate_and_validate_params();
1194         evaluate_git_dir();
1195
1196         configure_gitweb_features();
1197
1198         dispatch();
1199 }
1200
1201 our $is_last_request = sub { 1 };
1202 our ($pre_dispatch_hook, $post_dispatch_hook, $pre_listen_hook);
1203 our $CGI = 'CGI';
1204 our $cgi;
1205 sub configure_as_fcgi {
1206         require CGI::Fast;
1207         our $CGI = 'CGI::Fast';
1208
1209         my $request_number = 0;
1210         # let each child service 100 requests
1211         our $is_last_request = sub { ++$request_number > 100 };
1212 }
1213 sub evaluate_argv {
1214         my $script_name = $ENV{'SCRIPT_NAME'} || $ENV{'SCRIPT_FILENAME'} || __FILE__;
1215         configure_as_fcgi()
1216                 if $script_name =~ /\.fcgi$/;
1217
1218         return unless (@ARGV);
1219
1220         require Getopt::Long;
1221         Getopt::Long::GetOptions(
1222                 'fastcgi|fcgi|f' => \&configure_as_fcgi,
1223                 'nproc|n=i' => sub {
1224                         my ($arg, $val) = @_;
1225                         return unless eval { require FCGI::ProcManager; 1; };
1226                         my $proc_manager = FCGI::ProcManager->new({
1227                                 n_processes => $val,
1228                         });
1229                         our $pre_listen_hook    = sub { $proc_manager->pm_manage()        };
1230                         our $pre_dispatch_hook  = sub { $proc_manager->pm_pre_dispatch()  };
1231                         our $post_dispatch_hook = sub { $proc_manager->pm_post_dispatch() };
1232                 },
1233         );
1234 }
1235
1236 sub run {
1237         evaluate_argv();
1238
1239         $first_request = 1;
1240         $pre_listen_hook->()
1241                 if $pre_listen_hook;
1242
1243  REQUEST:
1244         while ($cgi = $CGI->new()) {
1245                 $pre_dispatch_hook->()
1246                         if $pre_dispatch_hook;
1247
1248                 run_request();
1249
1250                 $post_dispatch_hook->()
1251                         if $post_dispatch_hook;
1252                 $first_request = 0;
1253
1254                 last REQUEST if ($is_last_request->());
1255         }
1256
1257  DONE_GITWEB:
1258         1;
1259 }
1260
1261 run();
1262
1263 if (defined caller) {
1264         # wrapped in a subroutine processing requests,
1265         # e.g. mod_perl with ModPerl::Registry, or PSGI with Plack::App::WrapCGI
1266         return;
1267 } else {
1268         # pure CGI script, serving single request
1269         exit;
1270 }
1271
1272 ## ======================================================================
1273 ## action links
1274
1275 # possible values of extra options
1276 # -full => 0|1      - use absolute/full URL ($my_uri/$my_url as base)
1277 # -replay => 1      - start from a current view (replay with modifications)
1278 # -path_info => 0|1 - don't use/use path_info URL (if possible)
1279 # -anchor => ANCHOR - add #ANCHOR to end of URL, implies -replay if used alone
1280 sub href {
1281         my %params = @_;
1282         # default is to use -absolute url() i.e. $my_uri
1283         my $href = $params{-full} ? $my_url : $my_uri;
1284
1285         # implicit -replay, must be first of implicit params
1286         $params{-replay} = 1 if (keys %params == 1 && $params{-anchor});
1287
1288         $params{'project'} = $project unless exists $params{'project'};
1289
1290         if ($params{-replay}) {
1291                 while (my ($name, $symbol) = each %cgi_param_mapping) {
1292                         if (!exists $params{$name}) {
1293                                 $params{$name} = $input_params{$name};
1294                         }
1295                 }
1296         }
1297
1298         my $use_pathinfo = gitweb_check_feature('pathinfo');
1299         if (defined $params{'project'} &&
1300             (exists $params{-path_info} ? $params{-path_info} : $use_pathinfo)) {
1301                 # try to put as many parameters as possible in PATH_INFO:
1302                 #   - project name
1303                 #   - action
1304                 #   - hash_parent or hash_parent_base:/file_parent
1305                 #   - hash or hash_base:/filename
1306                 #   - the snapshot_format as an appropriate suffix
1307
1308                 # When the script is the root DirectoryIndex for the domain,
1309                 # $href here would be something like http://gitweb.example.com/
1310                 # Thus, we strip any trailing / from $href, to spare us double
1311                 # slashes in the final URL
1312                 $href =~ s,/$,,;
1313
1314                 # Then add the project name, if present
1315                 $href .= "/".esc_path_info($params{'project'});
1316                 delete $params{'project'};
1317
1318                 # since we destructively absorb parameters, we keep this
1319                 # boolean that remembers if we're handling a snapshot
1320                 my $is_snapshot = $params{'action'} eq 'snapshot';
1321
1322                 # Summary just uses the project path URL, any other action is
1323                 # added to the URL
1324                 if (defined $params{'action'}) {
1325                         $href .= "/".esc_path_info($params{'action'})
1326                                 unless $params{'action'} eq 'summary';
1327                         delete $params{'action'};
1328                 }
1329
1330                 # Next, we put hash_parent_base:/file_parent..hash_base:/file_name,
1331                 # stripping nonexistent or useless pieces
1332                 $href .= "/" if ($params{'hash_base'} || $params{'hash_parent_base'}
1333                         || $params{'hash_parent'} || $params{'hash'});
1334                 if (defined $params{'hash_base'}) {
1335                         if (defined $params{'hash_parent_base'}) {
1336                                 $href .= esc_path_info($params{'hash_parent_base'});
1337                                 # skip the file_parent if it's the same as the file_name
1338                                 if (defined $params{'file_parent'}) {
1339                                         if (defined $params{'file_name'} && $params{'file_parent'} eq $params{'file_name'}) {
1340                                                 delete $params{'file_parent'};
1341                                         } elsif ($params{'file_parent'} !~ /\.\./) {
1342                                                 $href .= ":/".esc_path_info($params{'file_parent'});
1343                                                 delete $params{'file_parent'};
1344                                         }
1345                                 }
1346                                 $href .= "..";
1347                                 delete $params{'hash_parent'};
1348                                 delete $params{'hash_parent_base'};
1349                         } elsif (defined $params{'hash_parent'}) {
1350                                 $href .= esc_path_info($params{'hash_parent'}). "..";
1351                                 delete $params{'hash_parent'};
1352                         }
1353
1354                         $href .= esc_path_info($params{'hash_base'});
1355                         if (defined $params{'file_name'} && $params{'file_name'} !~ /\.\./) {
1356                                 $href .= ":/".esc_path_info($params{'file_name'});
1357                                 delete $params{'file_name'};
1358                         }
1359                         delete $params{'hash'};
1360                         delete $params{'hash_base'};
1361                 } elsif (defined $params{'hash'}) {
1362                         $href .= esc_path_info($params{'hash'});
1363                         delete $params{'hash'};
1364                 }
1365
1366                 # If the action was a snapshot, we can absorb the
1367                 # snapshot_format parameter too
1368                 if ($is_snapshot) {
1369                         my $fmt = $params{'snapshot_format'};
1370                         # snapshot_format should always be defined when href()
1371                         # is called, but just in case some code forgets, we
1372                         # fall back to the default
1373                         $fmt ||= $snapshot_fmts[0];
1374                         $href .= $known_snapshot_formats{$fmt}{'suffix'};
1375                         delete $params{'snapshot_format'};
1376                 }
1377         }
1378
1379         # now encode the parameters explicitly
1380         my @result = ();
1381         for (my $i = 0; $i < @cgi_param_mapping; $i += 2) {
1382                 my ($name, $symbol) = ($cgi_param_mapping[$i], $cgi_param_mapping[$i+1]);
1383                 if (defined $params{$name}) {
1384                         if (ref($params{$name}) eq "ARRAY") {
1385                                 foreach my $par (@{$params{$name}}) {
1386                                         push @result, $symbol . "=" . esc_param($par);
1387                                 }
1388                         } else {
1389                                 push @result, $symbol . "=" . esc_param($params{$name});
1390                         }
1391                 }
1392         }
1393         $href .= "?" . join(';', @result) if scalar @result;
1394
1395         # final transformation: trailing spaces must be escaped (URI-encoded)
1396         $href =~ s/(\s+)$/CGI::escape($1)/e;
1397
1398         if ($params{-anchor}) {
1399                 $href .= "#".esc_param($params{-anchor});
1400         }
1401
1402         return $href;
1403 }
1404
1405
1406 ## ======================================================================
1407 ## validation, quoting/unquoting and escaping
1408
1409 sub validate_action {
1410         my $input = shift || return undef;
1411         return undef unless exists $actions{$input};
1412         return $input;
1413 }
1414
1415 sub validate_project {
1416         my $input = shift || return undef;
1417         if (!validate_pathname($input) ||
1418                 !(-d "$projectroot/$input") ||
1419                 !check_export_ok("$projectroot/$input") ||
1420                 ($strict_export && !project_in_list($input))) {
1421                 return undef;
1422         } else {
1423                 return $input;
1424         }
1425 }
1426
1427 sub validate_pathname {
1428         my $input = shift || return undef;
1429
1430         # no '.' or '..' as elements of path, i.e. no '.' nor '..'
1431         # at the beginning, at the end, and between slashes.
1432         # also this catches doubled slashes
1433         if ($input =~ m!(^|/)(|\.|\.\.)(/|$)!) {
1434                 return undef;
1435         }
1436         # no null characters
1437         if ($input =~ m!\0!) {
1438                 return undef;
1439         }
1440         return $input;
1441 }
1442
1443 sub validate_refname {
1444         my $input = shift || return undef;
1445
1446         # textual hashes are O.K.
1447         if ($input =~ m/^[0-9a-fA-F]{40}$/) {
1448                 return $input;
1449         }
1450         # it must be correct pathname
1451         $input = validate_pathname($input)
1452                 or return undef;
1453         # restrictions on ref name according to git-check-ref-format
1454         if ($input =~ m!(/\.|\.\.|[\000-\040\177 ~^:?*\[]|/$)!) {
1455                 return undef;
1456         }
1457         return $input;
1458 }
1459
1460 # decode sequences of octets in utf8 into Perl's internal form,
1461 # which is utf-8 with utf8 flag set if needed.  gitweb writes out
1462 # in utf-8 thanks to "binmode STDOUT, ':utf8'" at beginning
1463 sub to_utf8 {
1464         my $str = shift;
1465         return undef unless defined $str;
1466
1467         if (utf8::is_utf8($str) || utf8::decode($str)) {
1468                 return $str;
1469         } else {
1470                 return decode($fallback_encoding, $str, Encode::FB_DEFAULT);
1471         }
1472 }
1473
1474 # quote unsafe chars, but keep the slash, even when it's not
1475 # correct, but quoted slashes look too horrible in bookmarks
1476 sub esc_param {
1477         my $str = shift;
1478         return undef unless defined $str;
1479         $str =~ s/([^A-Za-z0-9\-_.~()\/:@ ]+)/CGI::escape($1)/eg;
1480         $str =~ s/ /\+/g;
1481         return $str;
1482 }
1483
1484 # the quoting rules for path_info fragment are slightly different
1485 sub esc_path_info {
1486         my $str = shift;
1487         return undef unless defined $str;
1488
1489         # path_info doesn't treat '+' as space (specially), but '?' must be escaped
1490         $str =~ s/([^A-Za-z0-9\-_.~();\/;:@&= +]+)/CGI::escape($1)/eg;
1491
1492         return $str;
1493 }
1494
1495 # quote unsafe chars in whole URL, so some characters cannot be quoted
1496 sub esc_url {
1497         my $str = shift;
1498         return undef unless defined $str;
1499         $str =~ s/([^A-Za-z0-9\-_.~();\/;?:@&= ]+)/CGI::escape($1)/eg;
1500         $str =~ s/ /\+/g;
1501         return $str;
1502 }
1503
1504 # quote unsafe characters in HTML attributes
1505 sub esc_attr {
1506
1507         # for XHTML conformance escaping '"' to '&quot;' is not enough
1508         return esc_html(@_);
1509 }
1510
1511 # replace invalid utf8 character with SUBSTITUTION sequence
1512 sub esc_html {
1513         my $str = shift;
1514         my %opts = @_;
1515
1516         return undef unless defined $str;
1517
1518         $str = to_utf8($str);
1519         $str = $cgi->escapeHTML($str);
1520         if ($opts{'-nbsp'}) {
1521                 $str =~ s/ /&nbsp;/g;
1522         }
1523         $str =~ s|([[:cntrl:]])|(($1 ne "\t") ? quot_cec($1) : $1)|eg;
1524         return $str;
1525 }
1526
1527 # quote control characters and escape filename to HTML
1528 sub esc_path {
1529         my $str = shift;
1530         my %opts = @_;
1531
1532         return undef unless defined $str;
1533
1534         $str = to_utf8($str);
1535         $str = $cgi->escapeHTML($str);
1536         if ($opts{'-nbsp'}) {
1537                 $str =~ s/ /&nbsp;/g;
1538         }
1539         $str =~ s|([[:cntrl:]])|quot_cec($1)|eg;
1540         return $str;
1541 }
1542
1543 # Sanitize for use in XHTML + application/xml+xhtm (valid XML 1.0)
1544 sub sanitize {
1545         my $str = shift;
1546
1547         return undef unless defined $str;
1548
1549         $str = to_utf8($str);
1550         $str =~ s|([[:cntrl:]])|($1 =~ /[\t\n\r]/ ? $1 : quot_cec($1))|eg;
1551         return $str;
1552 }
1553
1554 # Make control characters "printable", using character escape codes (CEC)
1555 sub quot_cec {
1556         my $cntrl = shift;
1557         my %opts = @_;
1558         my %es = ( # character escape codes, aka escape sequences
1559                 "\t" => '\t',   # tab            (HT)
1560                 "\n" => '\n',   # line feed      (LF)
1561                 "\r" => '\r',   # carrige return (CR)
1562                 "\f" => '\f',   # form feed      (FF)
1563                 "\b" => '\b',   # backspace      (BS)
1564                 "\a" => '\a',   # alarm (bell)   (BEL)
1565                 "\e" => '\e',   # escape         (ESC)
1566                 "\013" => '\v', # vertical tab   (VT)
1567                 "\000" => '\0', # nul character  (NUL)
1568         );
1569         my $chr = ( (exists $es{$cntrl})
1570                     ? $es{$cntrl}
1571                     : sprintf('\%2x', ord($cntrl)) );
1572         if ($opts{-nohtml}) {
1573                 return $chr;
1574         } else {
1575                 return "<span class=\"cntrl\">$chr</span>";
1576         }
1577 }
1578
1579 # Alternatively use unicode control pictures codepoints,
1580 # Unicode "printable representation" (PR)
1581 sub quot_upr {
1582         my $cntrl = shift;
1583         my %opts = @_;
1584
1585         my $chr = sprintf('&#%04d;', 0x2400+ord($cntrl));
1586         if ($opts{-nohtml}) {
1587                 return $chr;
1588         } else {
1589                 return "<span class=\"cntrl\">$chr</span>";
1590         }
1591 }
1592
1593 # git may return quoted and escaped filenames
1594 sub unquote {
1595         my $str = shift;
1596
1597         sub unq {
1598                 my $seq = shift;
1599                 my %es = ( # character escape codes, aka escape sequences
1600                         't' => "\t",   # tab            (HT, TAB)
1601                         'n' => "\n",   # newline        (NL)
1602                         'r' => "\r",   # return         (CR)
1603                         'f' => "\f",   # form feed      (FF)
1604                         'b' => "\b",   # backspace      (BS)
1605                         'a' => "\a",   # alarm (bell)   (BEL)
1606                         'e' => "\e",   # escape         (ESC)
1607                         'v' => "\013", # vertical tab   (VT)
1608                 );
1609
1610                 if ($seq =~ m/^[0-7]{1,3}$/) {
1611                         # octal char sequence
1612                         return chr(oct($seq));
1613                 } elsif (exists $es{$seq}) {
1614                         # C escape sequence, aka character escape code
1615                         return $es{$seq};
1616                 }
1617                 # quoted ordinary character
1618                 return $seq;
1619         }
1620
1621         if ($str =~ m/^"(.*)"$/) {
1622                 # needs unquoting
1623                 $str = $1;
1624                 $str =~ s/\\([^0-7]|[0-7]{1,3})/unq($1)/eg;
1625         }
1626         return $str;
1627 }
1628
1629 # escape tabs (convert tabs to spaces)
1630 sub untabify {
1631         my $line = shift;
1632
1633         while ((my $pos = index($line, "\t")) != -1) {
1634                 if (my $count = (8 - ($pos % 8))) {
1635                         my $spaces = ' ' x $count;
1636                         $line =~ s/\t/$spaces/;
1637                 }
1638         }
1639
1640         return $line;
1641 }
1642
1643 sub project_in_list {
1644         my $project = shift;
1645         my @list = git_get_projects_list();
1646         return @list && scalar(grep { $_->{'path'} eq $project } @list);
1647 }
1648
1649 ## ----------------------------------------------------------------------
1650 ## HTML aware string manipulation
1651
1652 # Try to chop given string on a word boundary between position
1653 # $len and $len+$add_len. If there is no word boundary there,
1654 # chop at $len+$add_len. Do not chop if chopped part plus ellipsis
1655 # (marking chopped part) would be longer than given string.
1656 sub chop_str {
1657         my $str = shift;
1658         my $len = shift;
1659         my $add_len = shift || 10;
1660         my $where = shift || 'right'; # 'left' | 'center' | 'right'
1661
1662         # Make sure perl knows it is utf8 encoded so we don't
1663         # cut in the middle of a utf8 multibyte char.
1664         $str = to_utf8($str);
1665
1666         # allow only $len chars, but don't cut a word if it would fit in $add_len
1667         # if it doesn't fit, cut it if it's still longer than the dots we would add
1668         # remove chopped character entities entirely
1669
1670         # when chopping in the middle, distribute $len into left and right part
1671         # return early if chopping wouldn't make string shorter
1672         if ($where eq 'center') {
1673                 return $str if ($len + 5 >= length($str)); # filler is length 5
1674                 $len = int($len/2);
1675         } else {
1676                 return $str if ($len + 4 >= length($str)); # filler is length 4
1677         }
1678
1679         # regexps: ending and beginning with word part up to $add_len
1680         my $endre = qr/.{$len}\w{0,$add_len}/;
1681         my $begre = qr/\w{0,$add_len}.{$len}/;
1682
1683         if ($where eq 'left') {
1684                 $str =~ m/^(.*?)($begre)$/;
1685                 my ($lead, $body) = ($1, $2);
1686                 if (length($lead) > 4) {
1687                         $lead = " ...";
1688                 }
1689                 return "$lead$body";
1690
1691         } elsif ($where eq 'center') {
1692                 $str =~ m/^($endre)(.*)$/;
1693                 my ($left, $str)  = ($1, $2);
1694                 $str =~ m/^(.*?)($begre)$/;
1695                 my ($mid, $right) = ($1, $2);
1696                 if (length($mid) > 5) {
1697                         $mid = " ... ";
1698                 }
1699                 return "$left$mid$right";
1700
1701         } else {
1702                 $str =~ m/^($endre)(.*)$/;
1703                 my $body = $1;
1704                 my $tail = $2;
1705                 if (length($tail) > 4) {
1706                         $tail = "... ";
1707                 }
1708                 return "$body$tail";
1709         }
1710 }
1711
1712 # takes the same arguments as chop_str, but also wraps a <span> around the
1713 # result with a title attribute if it does get chopped. Additionally, the
1714 # string is HTML-escaped.
1715 sub chop_and_escape_str {
1716         my ($str) = @_;
1717
1718         my $chopped = chop_str(@_);
1719         $str = to_utf8($str);
1720         if ($chopped eq $str) {
1721                 return esc_html($chopped);
1722         } else {
1723                 $str =~ s/[[:cntrl:]]/?/g;
1724                 return $cgi->span({-title=>$str}, esc_html($chopped));
1725         }
1726 }
1727
1728 # Highlight selected fragments of string, using given CSS class,
1729 # and escape HTML.  It is assumed that fragments do not overlap.
1730 # Regions are passed as list of pairs (array references).
1731 #
1732 # Example: esc_html_hl_regions("foobar", "mark", [ 0, 3 ]) returns
1733 # '<span class="mark">foo</span>bar'
1734 sub esc_html_hl_regions {
1735         my ($str, $css_class, @sel) = @_;
1736         my %opts = grep { ref($_) ne 'ARRAY' } @sel;
1737         @sel     = grep { ref($_) eq 'ARRAY' } @sel;
1738         return esc_html($str, %opts) unless @sel;
1739
1740         my $out = '';
1741         my $pos = 0;
1742
1743         for my $s (@sel) {
1744                 my ($begin, $end) = @$s;
1745
1746                 # Don't create empty <span> elements.
1747                 next if $end <= $begin;
1748
1749                 my $escaped = esc_html(substr($str, $begin, $end - $begin),
1750                                        %opts);
1751
1752                 $out .= esc_html(substr($str, $pos, $begin - $pos), %opts)
1753                         if ($begin - $pos > 0);
1754                 $out .= $cgi->span({-class => $css_class}, $escaped);
1755
1756                 $pos = $end;
1757         }
1758         $out .= esc_html(substr($str, $pos), %opts)
1759                 if ($pos < length($str));
1760
1761         return $out;
1762 }
1763
1764 # return positions of beginning and end of each match
1765 sub matchpos_list {
1766         my ($str, $regexp) = @_;
1767         return unless (defined $str && defined $regexp);
1768
1769         my @matches;
1770         while ($str =~ /$regexp/g) {
1771                 push @matches, [$-[0], $+[0]];
1772         }
1773         return @matches;
1774 }
1775
1776 # highlight match (if any), and escape HTML
1777 sub esc_html_match_hl {
1778         my ($str, $regexp) = @_;
1779         return esc_html($str) unless defined $regexp;
1780
1781         my @matches = matchpos_list($str, $regexp);
1782         return esc_html($str) unless @matches;
1783
1784         return esc_html_hl_regions($str, 'match', @matches);
1785 }
1786
1787
1788 # highlight match (if any) of shortened string, and escape HTML
1789 sub esc_html_match_hl_chopped {
1790         my ($str, $chopped, $regexp) = @_;
1791         return esc_html_match_hl($str, $regexp) unless defined $chopped;
1792
1793         my @matches = matchpos_list($str, $regexp);
1794         return esc_html($chopped) unless @matches;
1795
1796         # filter matches so that we mark chopped string
1797         my $tail = "... "; # see chop_str
1798         unless ($chopped =~ s/\Q$tail\E$//) {
1799                 $tail = '';
1800         }
1801         my $chop_len = length($chopped);
1802         my $tail_len = length($tail);
1803         my @filtered;
1804
1805         for my $m (@matches) {
1806                 if ($m->[0] > $chop_len) {
1807                         push @filtered, [ $chop_len, $chop_len + $tail_len ] if ($tail_len > 0);
1808                         last;
1809                 } elsif ($m->[1] > $chop_len) {
1810                         push @filtered, [ $m->[0], $chop_len + $tail_len ];
1811                         last;
1812                 }
1813                 push @filtered, $m;
1814         }
1815
1816         return esc_html_hl_regions($chopped . $tail, 'match', @filtered);
1817 }
1818
1819 ## ----------------------------------------------------------------------
1820 ## functions returning short strings
1821
1822 # CSS class for given age value (in seconds)
1823 sub age_class {
1824         my $age = shift;
1825
1826         if (!defined $age) {
1827                 return "noage";
1828         } elsif ($age < 60*60*2) {
1829                 return "age0";
1830         } elsif ($age < 60*60*24*2) {
1831                 return "age1";
1832         } else {
1833                 return "age2";
1834         }
1835 }
1836
1837 # convert age in seconds to "nn units ago" string
1838 sub age_string {
1839         my $age = shift;
1840         my $age_str;
1841
1842         if ($age > 60*60*24*365*2) {
1843                 $age_str = (int $age/60/60/24/365);
1844                 $age_str .= " years ago";
1845         } elsif ($age > 60*60*24*(365/12)*2) {
1846                 $age_str = int $age/60/60/24/(365/12);
1847                 $age_str .= " months ago";
1848         } elsif ($age > 60*60*24*7*2) {
1849                 $age_str = int $age/60/60/24/7;
1850                 $age_str .= " weeks ago";
1851         } elsif ($age > 60*60*24*2) {
1852                 $age_str = int $age/60/60/24;
1853                 $age_str .= " days ago";
1854         } elsif ($age > 60*60*2) {
1855                 $age_str = int $age/60/60;
1856                 $age_str .= " hours ago";
1857         } elsif ($age > 60*2) {
1858                 $age_str = int $age/60;
1859                 $age_str .= " min ago";
1860         } elsif ($age > 2) {
1861                 $age_str = int $age;
1862                 $age_str .= " sec ago";
1863         } else {
1864                 $age_str .= " right now";
1865         }
1866         return $age_str;
1867 }
1868
1869 use constant {
1870         S_IFINVALID => 0030000,
1871         S_IFGITLINK => 0160000,
1872 };
1873
1874 # submodule/subproject, a commit object reference
1875 sub S_ISGITLINK {
1876         my $mode = shift;
1877
1878         return (($mode & S_IFMT) == S_IFGITLINK)
1879 }
1880
1881 # convert file mode in octal to symbolic file mode string
1882 sub mode_str {
1883         my $mode = oct shift;
1884
1885         if (S_ISGITLINK($mode)) {
1886                 return 'm---------';
1887         } elsif (S_ISDIR($mode & S_IFMT)) {
1888                 return 'drwxr-xr-x';
1889         } elsif (S_ISLNK($mode)) {
1890                 return 'lrwxrwxrwx';
1891         } elsif (S_ISREG($mode)) {
1892                 # git cares only about the executable bit
1893                 if ($mode & S_IXUSR) {
1894                         return '-rwxr-xr-x';
1895                 } else {
1896                         return '-rw-r--r--';
1897                 };
1898         } else {
1899                 return '----------';
1900         }
1901 }
1902
1903 # convert file mode in octal to file type string
1904 sub file_type {
1905         my $mode = shift;
1906
1907         if ($mode !~ m/^[0-7]+$/) {
1908                 return $mode;
1909         } else {
1910                 $mode = oct $mode;
1911         }
1912
1913         if (S_ISGITLINK($mode)) {
1914                 return "submodule";
1915         } elsif (S_ISDIR($mode & S_IFMT)) {
1916                 return "directory";
1917         } elsif (S_ISLNK($mode)) {
1918                 return "symlink";
1919         } elsif (S_ISREG($mode)) {
1920                 return "file";
1921         } else {
1922                 return "unknown";
1923         }
1924 }
1925
1926 # convert file mode in octal to file type description string
1927 sub file_type_long {
1928         my $mode = shift;
1929
1930         if ($mode !~ m/^[0-7]+$/) {
1931                 return $mode;
1932         } else {
1933                 $mode = oct $mode;
1934         }
1935
1936         if (S_ISGITLINK($mode)) {
1937                 return "submodule";
1938         } elsif (S_ISDIR($mode & S_IFMT)) {
1939                 return "directory";
1940         } elsif (S_ISLNK($mode)) {
1941                 return "symlink";
1942         } elsif (S_ISREG($mode)) {
1943                 if ($mode & S_IXUSR) {
1944                         return "executable";
1945                 } else {
1946                         return "file";
1947                 };
1948         } else {
1949                 return "unknown";
1950         }
1951 }
1952
1953
1954 ## ----------------------------------------------------------------------
1955 ## functions returning short HTML fragments, or transforming HTML fragments
1956 ## which don't belong to other sections
1957
1958 # format line of commit message.
1959 sub format_log_line_html {
1960         my $line = shift;
1961
1962         $line = esc_html($line, -nbsp=>1);
1963         $line =~ s{\b([0-9a-fA-F]{8,40})\b}{
1964                 $cgi->a({-href => href(action=>"object", hash=>$1),
1965                                         -class => "text"}, $1);
1966         }eg;
1967
1968         return $line;
1969 }
1970
1971 # format marker of refs pointing to given object
1972
1973 # the destination action is chosen based on object type and current context:
1974 # - for annotated tags, we choose the tag view unless it's the current view
1975 #   already, in which case we go to shortlog view
1976 # - for other refs, we keep the current view if we're in history, shortlog or
1977 #   log view, and select shortlog otherwise
1978 sub format_ref_marker {
1979         my ($refs, $id) = @_;
1980         my $markers = '';
1981
1982         if (defined $refs->{$id}) {
1983                 foreach my $ref (@{$refs->{$id}}) {
1984                         # this code exploits the fact that non-lightweight tags are the
1985                         # only indirect objects, and that they are the only objects for which
1986                         # we want to use tag instead of shortlog as action
1987                         my ($type, $name) = qw();
1988                         my $indirect = ($ref =~ s/\^\{\}$//);
1989                         # e.g. tags/v2.6.11 or heads/next
1990                         if ($ref =~ m!^(.*?)s?/(.*)$!) {
1991                                 $type = $1;
1992                                 $name = $2;
1993                         } else {
1994                                 $type = "ref";
1995                                 $name = $ref;
1996                         }
1997
1998                         my $class = $type;
1999                         $class .= " indirect" if $indirect;
2000
2001                         my $dest_action = "shortlog";
2002
2003                         if ($indirect) {
2004                                 $dest_action = "tag" unless $action eq "tag";
2005                         } elsif ($action =~ /^(history|(short)?log)$/) {
2006                                 $dest_action = $action;
2007                         }
2008
2009                         my $dest = "";
2010                         $dest .= "refs/" unless $ref =~ m!^refs/!;
2011                         $dest .= $ref;
2012
2013                         my $link = $cgi->a({
2014                                 -href => href(
2015                                         action=>$dest_action,
2016                                         hash=>$dest
2017                                 )}, $name);
2018
2019                         $markers .= " <span class=\"".esc_attr($class)."\" title=\"".esc_attr($ref)."\">" .
2020                                 $link . "</span>";
2021                 }
2022         }
2023
2024         if ($markers) {
2025                 return ' <span class="refs">'. $markers . '</span>';
2026         } else {
2027                 return "";
2028         }
2029 }
2030
2031 # format, perhaps shortened and with markers, title line
2032 sub format_subject_html {
2033         my ($long, $short, $href, $extra) = @_;
2034         $extra = '' unless defined($extra);
2035
2036         if (length($short) < length($long)) {
2037                 $long =~ s/[[:cntrl:]]/?/g;
2038                 return $cgi->a({-href => $href, -class => "list subject",
2039                                 -title => to_utf8($long)},
2040                        esc_html($short)) . $extra;
2041         } else {
2042                 return $cgi->a({-href => $href, -class => "list subject"},
2043                        esc_html($long)) . $extra;
2044         }
2045 }
2046
2047 # Rather than recomputing the url for an email multiple times, we cache it
2048 # after the first hit. This gives a visible benefit in views where the avatar
2049 # for the same email is used repeatedly (e.g. shortlog).
2050 # The cache is shared by all avatar engines (currently gravatar only), which
2051 # are free to use it as preferred. Since only one avatar engine is used for any
2052 # given page, there's no risk for cache conflicts.
2053 our %avatar_cache = ();
2054
2055 # Compute the picon url for a given email, by using the picon search service over at
2056 # http://www.cs.indiana.edu/picons/search.html
2057 sub picon_url {
2058         my $email = lc shift;
2059         if (!$avatar_cache{$email}) {
2060                 my ($user, $domain) = split('@', $email);
2061                 $avatar_cache{$email} =
2062                         "http://www.cs.indiana.edu/cgi-pub/kinzler/piconsearch.cgi/" .
2063                         "$domain/$user/" .
2064                         "users+domains+unknown/up/single";
2065         }
2066         return $avatar_cache{$email};
2067 }
2068
2069 # Compute the gravatar url for a given email, if it's not in the cache already.
2070 # Gravatar stores only the part of the URL before the size, since that's the
2071 # one computationally more expensive. This also allows reuse of the cache for
2072 # different sizes (for this particular engine).
2073 sub gravatar_url {
2074         my $email = lc shift;
2075         my $size = shift;
2076         $avatar_cache{$email} ||=
2077                 "http://www.gravatar.com/avatar/" .
2078                         Digest::MD5::md5_hex($email) . "?s=";
2079         return $avatar_cache{$email} . $size;
2080 }
2081
2082 # Insert an avatar for the given $email at the given $size if the feature
2083 # is enabled.
2084 sub git_get_avatar {
2085         my ($email, %opts) = @_;
2086         my $pre_white  = ($opts{-pad_before} ? "&nbsp;" : "");
2087         my $post_white = ($opts{-pad_after}  ? "&nbsp;" : "");
2088         $opts{-size} ||= 'default';
2089         my $size = $avatar_size{$opts{-size}} || $avatar_size{'default'};
2090         my $url = "";
2091         if ($git_avatar eq 'gravatar') {
2092                 $url = gravatar_url($email, $size);
2093         } elsif ($git_avatar eq 'picon') {
2094                 $url = picon_url($email);
2095         }
2096         # Other providers can be added by extending the if chain, defining $url
2097         # as needed. If no variant puts something in $url, we assume avatars
2098         # are completely disabled/unavailable.
2099         if ($url) {
2100                 return $pre_white .
2101                        "<img width=\"$size\" " .
2102                             "class=\"avatar\" " .
2103                             "src=\"".esc_url($url)."\" " .
2104                             "alt=\"\" " .
2105                        "/>" . $post_white;
2106         } else {
2107                 return "";
2108         }
2109 }
2110
2111 sub format_search_author {
2112         my ($author, $searchtype, $displaytext) = @_;
2113         my $have_search = gitweb_check_feature('search');
2114
2115         if ($have_search) {
2116                 my $performed = "";
2117                 if ($searchtype eq 'author') {
2118                         $performed = "authored";
2119                 } elsif ($searchtype eq 'committer') {
2120                         $performed = "committed";
2121                 }
2122
2123                 return $cgi->a({-href => href(action=>"search", hash=>$hash,
2124                                 searchtext=>$author,
2125                                 searchtype=>$searchtype), class=>"list",
2126                                 title=>"Search for commits $performed by $author"},
2127                                 $displaytext);
2128
2129         } else {
2130                 return $displaytext;
2131         }
2132 }
2133
2134 # format the author name of the given commit with the given tag
2135 # the author name is chopped and escaped according to the other
2136 # optional parameters (see chop_str).
2137 sub format_author_html {
2138         my $tag = shift;
2139         my $co = shift;
2140         my $author = chop_and_escape_str($co->{'author_name'}, @_);
2141         return "<$tag class=\"author\">" .
2142                format_search_author($co->{'author_name'}, "author",
2143                        git_get_avatar($co->{'author_email'}, -pad_after => 1) .
2144                        $author) .
2145                "</$tag>";
2146 }
2147
2148 # format git diff header line, i.e. "diff --(git|combined|cc) ..."
2149 sub format_git_diff_header_line {
2150         my $line = shift;
2151         my $diffinfo = shift;
2152         my ($from, $to) = @_;
2153
2154         if ($diffinfo->{'nparents'}) {
2155                 # combined diff
2156                 $line =~ s!^(diff (.*?) )"?.*$!$1!;
2157                 if ($to->{'href'}) {
2158                         $line .= $cgi->a({-href => $to->{'href'}, -class => "path"},
2159                                          esc_path($to->{'file'}));
2160                 } else { # file was deleted (no href)
2161                         $line .= esc_path($to->{'file'});
2162                 }
2163         } else {
2164                 # "ordinary" diff
2165                 $line =~ s!^(diff (.*?) )"?a/.*$!$1!;
2166                 if ($from->{'href'}) {
2167                         $line .= $cgi->a({-href => $from->{'href'}, -class => "path"},
2168                                          'a/' . esc_path($from->{'file'}));
2169                 } else { # file was added (no href)
2170                         $line .= 'a/' . esc_path($from->{'file'});
2171                 }
2172                 $line .= ' ';
2173                 if ($to->{'href'}) {
2174                         $line .= $cgi->a({-href => $to->{'href'}, -class => "path"},
2175                                          'b/' . esc_path($to->{'file'}));
2176                 } else { # file was deleted
2177                         $line .= 'b/' . esc_path($to->{'file'});
2178                 }
2179         }
2180
2181         return "<div class=\"diff header\">$line</div>\n";
2182 }
2183
2184 # format extended diff header line, before patch itself
2185 sub format_extended_diff_header_line {
2186         my $line = shift;
2187         my $diffinfo = shift;
2188         my ($from, $to) = @_;
2189
2190         # match <path>
2191         if ($line =~ s!^((copy|rename) from ).*$!$1! && $from->{'href'}) {
2192                 $line .= $cgi->a({-href=>$from->{'href'}, -class=>"path"},
2193                                        esc_path($from->{'file'}));
2194         }
2195         if ($line =~ s!^((copy|rename) to ).*$!$1! && $to->{'href'}) {
2196                 $line .= $cgi->a({-href=>$to->{'href'}, -class=>"path"},
2197                                  esc_path($to->{'file'}));
2198         }
2199         # match single <mode>
2200         if ($line =~ m/\s(\d{6})$/) {
2201                 $line .= '<span class="info"> (' .
2202                          file_type_long($1) .
2203                          ')</span>';
2204         }
2205         # match <hash>
2206         if ($line =~ m/^index [0-9a-fA-F]{40},[0-9a-fA-F]{40}/) {
2207                 # can match only for combined diff
2208                 $line = 'index ';
2209                 for (my $i = 0; $i < $diffinfo->{'nparents'}; $i++) {
2210                         if ($from->{'href'}[$i]) {
2211                                 $line .= $cgi->a({-href=>$from->{'href'}[$i],
2212                                                   -class=>"hash"},
2213                                                  substr($diffinfo->{'from_id'}[$i],0,7));
2214                         } else {
2215                                 $line .= '0' x 7;
2216                         }
2217                         # separator
2218                         $line .= ',' if ($i < $diffinfo->{'nparents'} - 1);
2219                 }
2220                 $line .= '..';
2221                 if ($to->{'href'}) {
2222                         $line .= $cgi->a({-href=>$to->{'href'}, -class=>"hash"},
2223                                          substr($diffinfo->{'to_id'},0,7));
2224                 } else {
2225                         $line .= '0' x 7;
2226                 }
2227
2228         } elsif ($line =~ m/^index [0-9a-fA-F]{40}..[0-9a-fA-F]{40}/) {
2229                 # can match only for ordinary diff
2230                 my ($from_link, $to_link);
2231                 if ($from->{'href'}) {
2232                         $from_link = $cgi->a({-href=>$from->{'href'}, -class=>"hash"},
2233                                              substr($diffinfo->{'from_id'},0,7));
2234                 } else {
2235                         $from_link = '0' x 7;
2236                 }
2237                 if ($to->{'href'}) {
2238                         $to_link = $cgi->a({-href=>$to->{'href'}, -class=>"hash"},
2239                                            substr($diffinfo->{'to_id'},0,7));
2240                 } else {
2241                         $to_link = '0' x 7;
2242                 }
2243                 my ($from_id, $to_id) = ($diffinfo->{'from_id'}, $diffinfo->{'to_id'});
2244                 $line =~ s!$from_id\.\.$to_id!$from_link..$to_link!;
2245         }
2246
2247         return $line . "<br/>\n";
2248 }
2249
2250 # format from-file/to-file diff header
2251 sub format_diff_from_to_header {
2252         my ($from_line, $to_line, $diffinfo, $from, $to, @parents) = @_;
2253         my $line;
2254         my $result = '';
2255
2256         $line = $from_line;
2257         #assert($line =~ m/^---/) if DEBUG;
2258         # no extra formatting for "^--- /dev/null"
2259         if (! $diffinfo->{'nparents'}) {
2260                 # ordinary (single parent) diff
2261                 if ($line =~ m!^--- "?a/!) {
2262                         if ($from->{'href'}) {
2263                                 $line = '--- a/' .
2264                                         $cgi->a({-href=>$from->{'href'}, -class=>"path"},
2265                                                 esc_path($from->{'file'}));
2266                         } else {
2267                                 $line = '--- a/' .
2268                                         esc_path($from->{'file'});
2269                         }
2270                 }
2271                 $result .= qq!<div class="diff from_file">$line</div>\n!;
2272
2273         } else {
2274                 # combined diff (merge commit)
2275                 for (my $i = 0; $i < $diffinfo->{'nparents'}; $i++) {
2276                         if ($from->{'href'}[$i]) {
2277                                 $line = '--- ' .
2278                                         $cgi->a({-href=>href(action=>"blobdiff",
2279                                                              hash_parent=>$diffinfo->{'from_id'}[$i],
2280                                                              hash_parent_base=>$parents[$i],
2281                                                              file_parent=>$from->{'file'}[$i],
2282                                                              hash=>$diffinfo->{'to_id'},
2283                                                              hash_base=>$hash,
2284                                                              file_name=>$to->{'file'}),
2285                                                  -class=>"path",
2286                                                  -title=>"diff" . ($i+1)},
2287                                                 $i+1) .
2288                                         '/' .
2289                                         $cgi->a({-href=>$from->{'href'}[$i], -class=>"path"},
2290                                                 esc_path($from->{'file'}[$i]));
2291                         } else {
2292                                 $line = '--- /dev/null';
2293                         }
2294                         $result .= qq!<div class="diff from_file">$line</div>\n!;
2295                 }
2296         }
2297
2298         $line = $to_line;
2299         #assert($line =~ m/^\+\+\+/) if DEBUG;
2300         # no extra formatting for "^+++ /dev/null"
2301         if ($line =~ m!^\+\+\+ "?b/!) {
2302                 if ($to->{'href'}) {
2303                         $line = '+++ b/' .
2304                                 $cgi->a({-href=>$to->{'href'}, -class=>"path"},
2305                                         esc_path($to->{'file'}));
2306                 } else {
2307                         $line = '+++ b/' .
2308                                 esc_path($to->{'file'});
2309                 }
2310         }
2311         $result .= qq!<div class="diff to_file">$line</div>\n!;
2312
2313         return $result;
2314 }
2315
2316 # create note for patch simplified by combined diff
2317 sub format_diff_cc_simplified {
2318         my ($diffinfo, @parents) = @_;
2319         my $result = '';
2320
2321         $result .= "<div class=\"diff header\">" .
2322                    "diff --cc ";
2323         if (!is_deleted($diffinfo)) {
2324                 $result .= $cgi->a({-href => href(action=>"blob",
2325                                                   hash_base=>$hash,
2326                                                   hash=>$diffinfo->{'to_id'},
2327                                                   file_name=>$diffinfo->{'to_file'}),
2328                                     -class => "path"},
2329                                    esc_path($diffinfo->{'to_file'}));
2330         } else {
2331                 $result .= esc_path($diffinfo->{'to_file'});
2332         }
2333         $result .= "</div>\n" . # class="diff header"
2334                    "<div class=\"diff nodifferences\">" .
2335                    "Simple merge" .
2336                    "</div>\n"; # class="diff nodifferences"
2337
2338         return $result;
2339 }
2340
2341 sub diff_line_class {
2342         my ($line, $from, $to) = @_;
2343
2344         # ordinary diff
2345         my $num_sign = 1;
2346         # combined diff
2347         if ($from && $to && ref($from->{'href'}) eq "ARRAY") {
2348                 $num_sign = scalar @{$from->{'href'}};
2349         }
2350
2351         my @diff_line_classifier = (
2352                 { regexp => qr/^\@\@{$num_sign} /, class => "chunk_header"},
2353                 { regexp => qr/^\\/,               class => "incomplete"  },
2354                 { regexp => qr/^ {$num_sign}/,     class => "ctx" },
2355                 # classifier for context must come before classifier add/rem,
2356                 # or we would have to use more complicated regexp, for example
2357                 # qr/(?= {0,$m}\+)[+ ]{$num_sign}/, where $m = $num_sign - 1;
2358                 { regexp => qr/^[+ ]{$num_sign}/,   class => "add" },
2359                 { regexp => qr/^[- ]{$num_sign}/,   class => "rem" },
2360         );
2361         for my $clsfy (@diff_line_classifier) {
2362                 return $clsfy->{'class'}
2363                         if ($line =~ $clsfy->{'regexp'});
2364         }
2365
2366         # fallback
2367         return "";
2368 }
2369
2370 # assumes that $from and $to are defined and correctly filled,
2371 # and that $line holds a line of chunk header for unified diff
2372 sub format_unidiff_chunk_header {
2373         my ($line, $from, $to) = @_;
2374
2375         my ($from_text, $from_start, $from_lines, $to_text, $to_start, $to_lines, $section) =
2376                 $line =~ m/^\@{2} (-(\d+)(?:,(\d+))?) (\+(\d+)(?:,(\d+))?) \@{2}(.*)$/;
2377
2378         $from_lines = 0 unless defined $from_lines;
2379         $to_lines   = 0 unless defined $to_lines;
2380
2381         if ($from->{'href'}) {
2382                 $from_text = $cgi->a({-href=>"$from->{'href'}#l$from_start",
2383                                      -class=>"list"}, $from_text);
2384         }
2385         if ($to->{'href'}) {
2386                 $to_text   = $cgi->a({-href=>"$to->{'href'}#l$to_start",
2387                                      -class=>"list"}, $to_text);
2388         }
2389         $line = "<span class=\"chunk_info\">@@ $from_text $to_text @@</span>" .
2390                 "<span class=\"section\">" . esc_html($section, -nbsp=>1) . "</span>";
2391         return $line;
2392 }
2393
2394 # assumes that $from and $to are defined and correctly filled,
2395 # and that $line holds a line of chunk header for combined diff
2396 sub format_cc_diff_chunk_header {
2397         my ($line, $from, $to) = @_;
2398
2399         my ($prefix, $ranges, $section) = $line =~ m/^(\@+) (.*?) \@+(.*)$/;
2400         my (@from_text, @from_start, @from_nlines, $to_text, $to_start, $to_nlines);
2401
2402         @from_text = split(' ', $ranges);
2403         for (my $i = 0; $i < @from_text; ++$i) {
2404                 ($from_start[$i], $from_nlines[$i]) =
2405                         (split(',', substr($from_text[$i], 1)), 0);
2406         }
2407
2408         $to_text   = pop @from_text;
2409         $to_start  = pop @from_start;
2410         $to_nlines = pop @from_nlines;
2411
2412         $line = "<span class=\"chunk_info\">$prefix ";
2413         for (my $i = 0; $i < @from_text; ++$i) {
2414                 if ($from->{'href'}[$i]) {
2415                         $line .= $cgi->a({-href=>"$from->{'href'}[$i]#l$from_start[$i]",
2416                                           -class=>"list"}, $from_text[$i]);
2417                 } else {
2418                         $line .= $from_text[$i];
2419                 }
2420                 $line .= " ";
2421         }
2422         if ($to->{'href'}) {
2423                 $line .= $cgi->a({-href=>"$to->{'href'}#l$to_start",
2424                                   -class=>"list"}, $to_text);
2425         } else {
2426                 $line .= $to_text;
2427         }
2428         $line .= " $prefix</span>" .
2429                  "<span class=\"section\">" . esc_html($section, -nbsp=>1) . "</span>";
2430         return $line;
2431 }
2432
2433 # process patch (diff) line (not to be used for diff headers),
2434 # returning HTML-formatted (but not wrapped) line.
2435 # If the line is passed as a reference, it is treated as HTML and not
2436 # esc_html()'ed.
2437 sub format_diff_line {
2438         my ($line, $diff_class, $from, $to) = @_;
2439
2440         if (ref($line)) {
2441                 $line = $$line;
2442         } else {
2443                 chomp $line;
2444                 $line = untabify($line);
2445
2446                 if ($from && $to && $line =~ m/^\@{2} /) {
2447                         $line = format_unidiff_chunk_header($line, $from, $to);
2448                 } elsif ($from && $to && $line =~ m/^\@{3}/) {
2449                         $line = format_cc_diff_chunk_header($line, $from, $to);
2450                 } else {
2451                         $line = esc_html($line, -nbsp=>1);
2452                 }
2453         }
2454
2455         my $diff_classes = "diff";
2456         $diff_classes .= " $diff_class" if ($diff_class);
2457         $line = "<div class=\"$diff_classes\">$line</div>\n";
2458
2459         return $line;
2460 }
2461
2462 # Generates undef or something like "_snapshot_" or "snapshot (_tbz2_ _zip_)",
2463 # linked.  Pass the hash of the tree/commit to snapshot.
2464 sub format_snapshot_links {
2465         my ($hash) = @_;
2466         my $num_fmts = @snapshot_fmts;
2467         if ($num_fmts > 1) {
2468                 # A parenthesized list of links bearing format names.
2469                 # e.g. "snapshot (_tar.gz_ _zip_)"
2470                 return "snapshot (" . join(' ', map
2471                         $cgi->a({
2472                                 -href => href(
2473                                         action=>"snapshot",
2474                                         hash=>$hash,
2475                                         snapshot_format=>$_
2476                                 )
2477                         }, $known_snapshot_formats{$_}{'display'})
2478                 , @snapshot_fmts) . ")";
2479         } elsif ($num_fmts == 1) {
2480                 # A single "snapshot" link whose tooltip bears the format name.
2481                 # i.e. "_snapshot_"
2482                 my ($fmt) = @snapshot_fmts;
2483                 return
2484                         $cgi->a({
2485                                 -href => href(
2486                                         action=>"snapshot",
2487                                         hash=>$hash,
2488                                         snapshot_format=>$fmt
2489                                 ),
2490                                 -title => "in format: $known_snapshot_formats{$fmt}{'display'}"
2491                         }, "snapshot");
2492         } else { # $num_fmts == 0
2493                 return undef;
2494         }
2495 }
2496
2497 ## ......................................................................
2498 ## functions returning values to be passed, perhaps after some
2499 ## transformation, to other functions; e.g. returning arguments to href()
2500
2501 # returns hash to be passed to href to generate gitweb URL
2502 # in -title key it returns description of link
2503 sub get_feed_info {
2504         my $format = shift || 'Atom';
2505         my %res = (action => lc($format));
2506
2507         # feed links are possible only for project views
2508         return unless (defined $project);
2509         # some views should link to OPML, or to generic project feed,
2510         # or don't have specific feed yet (so they should use generic)
2511         return if (!$action || $action =~ /^(?:tags|heads|forks|tag|search)$/x);
2512
2513         my $branch;
2514         # branches refs uses 'refs/heads/' prefix (fullname) to differentiate
2515         # from tag links; this also makes possible to detect branch links
2516         if ((defined $hash_base && $hash_base =~ m!^refs/heads/(.*)$!) ||
2517             (defined $hash      && $hash      =~ m!^refs/heads/(.*)$!)) {
2518                 $branch = $1;
2519         }
2520         # find log type for feed description (title)
2521         my $type = 'log';
2522         if (defined $file_name) {
2523                 $type  = "history of $file_name";
2524                 $type .= "/" if ($action eq 'tree');
2525                 $type .= " on '$branch'" if (defined $branch);
2526         } else {
2527                 $type = "log of $branch" if (defined $branch);
2528         }
2529
2530         $res{-title} = $type;
2531         $res{'hash'} = (defined $branch ? "refs/heads/$branch" : undef);
2532         $res{'file_name'} = $file_name;
2533
2534         return %res;
2535 }
2536
2537 ## ----------------------------------------------------------------------
2538 ## git utility subroutines, invoking git commands
2539
2540 # returns path to the core git executable and the --git-dir parameter as list
2541 sub git_cmd {
2542         $number_of_git_cmds++;
2543         return $GIT, '--git-dir='.$git_dir;
2544 }
2545
2546 # quote the given arguments for passing them to the shell
2547 # quote_command("command", "arg 1", "arg with ' and ! characters")
2548 # => "'command' 'arg 1' 'arg with '\'' and '\!' characters'"
2549 # Try to avoid using this function wherever possible.
2550 sub quote_command {
2551         return join(' ',
2552                 map { my $a = $_; $a =~ s/(['!])/'\\$1'/g; "'$a'" } @_ );
2553 }
2554
2555 # get HEAD ref of given project as hash
2556 sub git_get_head_hash {
2557         return git_get_full_hash(shift, 'HEAD');
2558 }
2559
2560 sub git_get_full_hash {
2561         return git_get_hash(@_);
2562 }
2563
2564 sub git_get_short_hash {
2565         return git_get_hash(@_, '--short=7');
2566 }
2567
2568 sub git_get_hash {
2569         my ($project, $hash, @options) = @_;
2570         my $o_git_dir = $git_dir;
2571         my $retval = undef;
2572         $git_dir = "$projectroot/$project";
2573         if (open my $fd, '-|', git_cmd(), 'rev-parse',
2574             '--verify', '-q', @options, $hash) {
2575                 $retval = <$fd>;
2576                 chomp $retval if defined $retval;
2577                 close $fd;
2578         }
2579         if (defined $o_git_dir) {
2580                 $git_dir = $o_git_dir;
2581         }
2582         return $retval;
2583 }
2584
2585 # get type of given object
2586 sub git_get_type {
2587         my $hash = shift;
2588
2589         open my $fd, "-|", git_cmd(), "cat-file", '-t', $hash or return;
2590         my $type = <$fd>;
2591         close $fd or return;
2592         chomp $type;
2593         return $type;
2594 }
2595
2596 # repository configuration
2597 our $config_file = '';
2598 our %config;
2599
2600 # store multiple values for single key as anonymous array reference
2601 # single values stored directly in the hash, not as [ <value> ]
2602 sub hash_set_multi {
2603         my ($hash, $key, $value) = @_;
2604
2605         if (!exists $hash->{$key}) {
2606                 $hash->{$key} = $value;
2607         } elsif (!ref $hash->{$key}) {
2608                 $hash->{$key} = [ $hash->{$key}, $value ];
2609         } else {
2610                 push @{$hash->{$key}}, $value;
2611         }
2612 }
2613
2614 # return hash of git project configuration
2615 # optionally limited to some section, e.g. 'gitweb'
2616 sub git_parse_project_config {
2617         my $section_regexp = shift;
2618         my %config;
2619
2620         local $/ = "\0";
2621
2622         open my $fh, "-|", git_cmd(), "config", '-z', '-l',
2623                 or return;
2624
2625         while (my $keyval = <$fh>) {
2626                 chomp $keyval;
2627                 my ($key, $value) = split(/\n/, $keyval, 2);
2628
2629                 hash_set_multi(\%config, $key, $value)
2630                         if (!defined $section_regexp || $key =~ /^(?:$section_regexp)\./o);
2631         }
2632         close $fh;
2633
2634         return %config;
2635 }
2636
2637 # convert config value to boolean: 'true' or 'false'
2638 # no value, number > 0, 'true' and 'yes' values are true
2639 # rest of values are treated as false (never as error)
2640 sub config_to_bool {
2641         my $val = shift;
2642
2643         return 1 if !defined $val;             # section.key
2644
2645         # strip leading and trailing whitespace
2646         $val =~ s/^\s+//;
2647         $val =~ s/\s+$//;
2648
2649         return (($val =~ /^\d+$/ && $val) ||   # section.key = 1
2650                 ($val =~ /^(?:true|yes)$/i));  # section.key = true
2651 }
2652
2653 # convert config value to simple decimal number
2654 # an optional value suffix of 'k', 'm', or 'g' will cause the value
2655 # to be multiplied by 1024, 1048576, or 1073741824
2656 sub config_to_int {
2657         my $val = shift;
2658
2659         # strip leading and trailing whitespace
2660         $val =~ s/^\s+//;
2661         $val =~ s/\s+$//;
2662
2663         if (my ($num, $unit) = ($val =~ /^([0-9]*)([kmg])$/i)) {
2664                 $unit = lc($unit);
2665                 # unknown unit is treated as 1
2666                 return $num * ($unit eq 'g' ? 1073741824 :
2667                                $unit eq 'm' ?    1048576 :
2668                                $unit eq 'k' ?       1024 : 1);
2669         }
2670         return $val;
2671 }
2672
2673 # convert config value to array reference, if needed
2674 sub config_to_multi {
2675         my $val = shift;
2676
2677         return ref($val) ? $val : (defined($val) ? [ $val ] : []);
2678 }
2679
2680 sub git_get_project_config {
2681         my ($key, $type) = @_;
2682
2683         return unless defined $git_dir;
2684
2685         # key sanity check
2686         return unless ($key);
2687         # only subsection, if exists, is case sensitive,
2688         # and not lowercased by 'git config -z -l'
2689         if (my ($hi, $mi, $lo) = ($key =~ /^([^.]*)\.(.*)\.([^.]*)$/)) {
2690                 $key = join(".", lc($hi), $mi, lc($lo));
2691         } else {
2692                 $key = lc($key);
2693         }
2694         $key =~ s/^gitweb\.//;
2695         return if ($key =~ m/\W/);
2696
2697         # type sanity check
2698         if (defined $type) {
2699                 $type =~ s/^--//;
2700                 $type = undef
2701                         unless ($type eq 'bool' || $type eq 'int');
2702         }
2703
2704         # get config
2705         if (!defined $config_file ||
2706             $config_file ne "$git_dir/config") {
2707                 %config = git_parse_project_config('gitweb');
2708                 $config_file = "$git_dir/config";
2709         }
2710
2711         # check if config variable (key) exists
2712         return unless exists $config{"gitweb.$key"};
2713
2714         # ensure given type
2715         if (!defined $type) {
2716                 return $config{"gitweb.$key"};
2717         } elsif ($type eq 'bool') {
2718                 # backward compatibility: 'git config --bool' returns true/false
2719                 return config_to_bool($config{"gitweb.$key"}) ? 'true' : 'false';
2720         } elsif ($type eq 'int') {
2721                 return config_to_int($config{"gitweb.$key"});
2722         }
2723         return $config{"gitweb.$key"};
2724 }
2725
2726 # get hash of given path at given ref
2727 sub git_get_hash_by_path {
2728         my $base = shift;
2729         my $path = shift || return undef;
2730         my $type = shift;
2731
2732         $path =~ s,/+$,,;
2733
2734         open my $fd, "-|", git_cmd(), "ls-tree", $base, "--", $path
2735                 or die_error(500, "Open git-ls-tree failed");
2736         my $line = <$fd>;
2737         close $fd or return undef;
2738
2739         if (!defined $line) {
2740                 # there is no tree or hash given by $path at $base
2741                 return undef;
2742         }
2743
2744         #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
2745         $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t/;
2746         if (defined $type && $type ne $2) {
2747                 # type doesn't match
2748                 return undef;
2749         }
2750         return $3;
2751 }
2752
2753 # get path of entry with given hash at given tree-ish (ref)
2754 # used to get 'from' filename for combined diff (merge commit) for renames
2755 sub git_get_path_by_hash {
2756         my $base = shift || return;
2757         my $hash = shift || return;
2758
2759         local $/ = "\0";
2760
2761         open my $fd, "-|", git_cmd(), "ls-tree", '-r', '-t', '-z', $base
2762                 or return undef;
2763         while (my $line = <$fd>) {
2764                 chomp $line;
2765
2766                 #'040000 tree 595596a6a9117ddba9fe379b6b012b558bac8423  gitweb'
2767                 #'100644 blob e02e90f0429be0d2a69b76571101f20b8f75530f  gitweb/README'
2768                 if ($line =~ m/(?:[0-9]+) (?:.+) $hash\t(.+)$/) {
2769                         close $fd;
2770                         return $1;
2771                 }
2772         }
2773         close $fd;
2774         return undef;
2775 }
2776
2777 ## ......................................................................
2778 ## git utility functions, directly accessing git repository
2779
2780 # get the value of config variable either from file named as the variable
2781 # itself in the repository ($GIT_DIR/$name file), or from gitweb.$name
2782 # configuration variable in the repository config file.
2783 sub git_get_file_or_project_config {
2784         my ($path, $name) = @_;
2785
2786         $git_dir = "$projectroot/$path";
2787         open my $fd, '<', "$git_dir/$name"
2788                 or return git_get_project_config($name);
2789         my $conf = <$fd>;
2790         close $fd;
2791         if (defined $conf) {
2792                 chomp $conf;
2793         }
2794         return $conf;
2795 }
2796
2797 sub git_get_project_description {
2798         my $path = shift;
2799         return git_get_file_or_project_config($path, 'description');
2800 }
2801
2802 sub git_get_project_category {
2803         my $path = shift;
2804         return git_get_file_or_project_config($path, 'category');
2805 }
2806
2807
2808 # supported formats:
2809 # * $GIT_DIR/ctags/<tagname> file (in 'ctags' subdirectory)
2810 #   - if its contents is a number, use it as tag weight,
2811 #   - otherwise add a tag with weight 1
2812 # * $GIT_DIR/ctags file, each line is a tag (with weight 1)
2813 #   the same value multiple times increases tag weight
2814 # * `gitweb.ctag' multi-valued repo config variable
2815 sub git_get_project_ctags {
2816         my $project = shift;
2817         my $ctags = {};
2818
2819         $git_dir = "$projectroot/$project";
2820         if (opendir my $dh, "$git_dir/ctags") {
2821                 my @files = grep { -f $_ } map { "$git_dir/ctags/$_" } readdir($dh);
2822                 foreach my $tagfile (@files) {
2823                         open my $ct, '<', $tagfile
2824                                 or next;
2825                         my $val = <$ct>;
2826                         chomp $val if $val;
2827                         close $ct;
2828
2829                         (my $ctag = $tagfile) =~ s#.*/##;
2830                         if ($val =~ /^\d+$/) {
2831                                 $ctags->{$ctag} = $val;
2832                         } else {
2833                                 $ctags->{$ctag} = 1;
2834                         }
2835                 }
2836                 closedir $dh;
2837
2838         } elsif (open my $fh, '<', "$git_dir/ctags") {
2839                 while (my $line = <$fh>) {
2840                         chomp $line;
2841                         $ctags->{$line}++ if $line;
2842                 }
2843                 close $fh;
2844
2845         } else {
2846                 my $taglist = config_to_multi(git_get_project_config('ctag'));
2847                 foreach my $tag (@$taglist) {
2848                         $ctags->{$tag}++;
2849                 }
2850         }
2851
2852         return $ctags;
2853 }
2854
2855 # return hash, where keys are content tags ('ctags'),
2856 # and values are sum of weights of given tag in every project
2857 sub git_gather_all_ctags {
2858         my $projects = shift;
2859         my $ctags = {};
2860
2861         foreach my $p (@$projects) {
2862                 foreach my $ct (keys %{$p->{'ctags'}}) {
2863                         $ctags->{$ct} += $p->{'ctags'}->{$ct};
2864                 }
2865         }
2866
2867         return $ctags;
2868 }
2869
2870 sub git_populate_project_tagcloud {
2871         my $ctags = shift;
2872
2873         # First, merge different-cased tags; tags vote on casing
2874         my %ctags_lc;
2875         foreach (keys %$ctags) {
2876                 $ctags_lc{lc $_}->{count} += $ctags->{$_};
2877                 if (not $ctags_lc{lc $_}->{topcount}
2878                     or $ctags_lc{lc $_}->{topcount} < $ctags->{$_}) {
2879                         $ctags_lc{lc $_}->{topcount} = $ctags->{$_};
2880                         $ctags_lc{lc $_}->{topname} = $_;
2881                 }
2882         }
2883
2884         my $cloud;
2885         my $matched = $input_params{'ctag'};
2886         if (eval { require HTML::TagCloud; 1; }) {
2887                 $cloud = HTML::TagCloud->new;
2888                 foreach my $ctag (sort keys %ctags_lc) {
2889                         # Pad the title with spaces so that the cloud looks
2890                         # less crammed.
2891                         my $title = esc_html($ctags_lc{$ctag}->{topname});
2892                         $title =~ s/ /&nbsp;/g;
2893                         $title =~ s/^/&nbsp;/g;
2894                         $title =~ s/$/&nbsp;/g;
2895                         if (defined $matched && $matched eq $ctag) {
2896                                 $title = qq(<span class="match">$title</span>);
2897                         }
2898                         $cloud->add($title, href(project=>undef, ctag=>$ctag),
2899                                     $ctags_lc{$ctag}->{count});
2900                 }
2901         } else {
2902                 $cloud = {};
2903                 foreach my $ctag (keys %ctags_lc) {
2904                         my $title = esc_html($ctags_lc{$ctag}->{topname}, -nbsp=>1);
2905                         if (defined $matched && $matched eq $ctag) {
2906                                 $title = qq(<span class="match">$title</span>);
2907                         }
2908                         $cloud->{$ctag}{count} = $ctags_lc{$ctag}->{count};
2909                         $cloud->{$ctag}{ctag} =
2910                                 $cgi->a({-href=>href(project=>undef, ctag=>$ctag)}, $title);
2911                 }
2912         }
2913         return $cloud;
2914 }
2915
2916 sub git_show_project_tagcloud {
2917         my ($cloud, $count) = @_;
2918         if (ref $cloud eq 'HTML::TagCloud') {
2919                 return $cloud->html_and_css($count);
2920         } else {
2921                 my @tags = sort { $cloud->{$a}->{'count'} <=> $cloud->{$b}->{'count'} } keys %$cloud;
2922                 return
2923                         '<div id="htmltagcloud"'.($project ? '' : ' align="center"').'>' .
2924                         join (', ', map {
2925                                 $cloud->{$_}->{'ctag'}
2926                         } splice(@tags, 0, $count)) .
2927                         '</div>';
2928         }
2929 }
2930
2931 sub git_get_project_url_list {
2932         my $path = shift;
2933
2934         $git_dir = "$projectroot/$path";
2935         open my $fd, '<', "$git_dir/cloneurl"
2936                 or return wantarray ?
2937                 @{ config_to_multi(git_get_project_config('url')) } :
2938                    config_to_multi(git_get_project_config('url'));
2939         my @git_project_url_list = map { chomp; $_ } <$fd>;
2940         close $fd;
2941
2942         return wantarray ? @git_project_url_list : \@git_project_url_list;
2943 }
2944
2945 sub git_get_projects_list {
2946         my $filter = shift || '';
2947         my $paranoid = shift;
2948         my @list;
2949
2950         if (-d $projects_list) {
2951                 # search in directory
2952                 my $dir = $projects_list;
2953                 # remove the trailing "/"
2954                 $dir =~ s!/+$!!;
2955                 my $pfxlen = length("$dir");
2956                 my $pfxdepth = ($dir =~ tr!/!!);
2957                 # when filtering, search only given subdirectory
2958                 if ($filter && !$paranoid) {
2959                         $dir .= "/$filter";
2960                         $dir =~ s!/+$!!;
2961                 }
2962
2963                 File::Find::find({
2964                         follow_fast => 1, # follow symbolic links
2965                         follow_skip => 2, # ignore duplicates
2966                         dangling_symlinks => 0, # ignore dangling symlinks, silently
2967                         wanted => sub {
2968                                 # global variables
2969                                 our $project_maxdepth;
2970                                 our $projectroot;
2971                                 # skip project-list toplevel, if we get it.
2972                                 return if (m!^[/.]$!);
2973                                 # only directories can be git repositories
2974                                 return unless (-d $_);
2975                                 # don't traverse too deep (Find is super slow on os x)
2976                                 # $project_maxdepth excludes depth of $projectroot
2977                                 if (($File::Find::name =~ tr!/!!) - $pfxdepth > $project_maxdepth) {
2978                                         $File::Find::prune = 1;
2979                                         return;
2980                                 }
2981
2982                                 my $path = substr($File::Find::name, $pfxlen + 1);
2983                                 # paranoidly only filter here
2984                                 if ($paranoid && $filter && $path !~ m!^\Q$filter\E/!) {
2985                                         next;
2986                                 }
2987                                 # we check related file in $projectroot
2988                                 if (check_export_ok("$projectroot/$path")) {
2989                                         push @list, { path => $path };
2990                                         $File::Find::prune = 1;
2991                                 }
2992                         },
2993                 }, "$dir");
2994
2995         } elsif (-f $projects_list) {
2996                 # read from file(url-encoded):
2997                 # 'git%2Fgit.git Linus+Torvalds'
2998                 # 'libs%2Fklibc%2Fklibc.git H.+Peter+Anvin'
2999                 # 'linux%2Fhotplug%2Fudev.git Greg+Kroah-Hartman'
3000                 open my $fd, '<', $projects_list or return;
3001         PROJECT:
3002                 while (my $line = <$fd>) {
3003                         chomp $line;
3004                         my ($path, $owner) = split ' ', $line;
3005                         $path = unescape($path);
3006                         $owner = unescape($owner);
3007                         if (!defined $path) {
3008                                 next;
3009                         }
3010                         # if $filter is rpovided, check if $path begins with $filter
3011                         if ($filter && $path !~ m!^\Q$filter\E/!) {
3012                                 next;
3013                         }
3014                         if (check_export_ok("$projectroot/$path")) {
3015                                 my $pr = {
3016                                         path => $path,
3017                                         owner => to_utf8($owner),
3018                                 };
3019                                 push @list, $pr;
3020                         }
3021                 }
3022                 close $fd;
3023         }
3024         return @list;
3025 }
3026
3027 # written with help of Tree::Trie module (Perl Artistic License, GPL compatibile)
3028 # as side effects it sets 'forks' field to list of forks for forked projects
3029 sub filter_forks_from_projects_list {
3030         my $projects = shift;
3031
3032         my %trie; # prefix tree of directories (path components)
3033         # generate trie out of those directories that might contain forks
3034         foreach my $pr (@$projects) {
3035                 my $path = $pr->{'path'};
3036                 $path =~ s/\.git$//;      # forks of 'repo.git' are in 'repo/' directory
3037                 next if ($path =~ m!/$!); # skip non-bare repositories, e.g. 'repo/.git'
3038                 next unless ($path);      # skip '.git' repository: tests, git-instaweb
3039                 next unless (-d "$projectroot/$path"); # containing directory exists
3040                 $pr->{'forks'} = [];      # there can be 0 or more forks of project
3041
3042                 # add to trie
3043                 my @dirs = split('/', $path);
3044                 # walk the trie, until either runs out of components or out of trie
3045                 my $ref = \%trie;
3046                 while (scalar @dirs &&
3047                        exists($ref->{$dirs[0]})) {
3048                         $ref = $ref->{shift @dirs};
3049                 }
3050                 # create rest of trie structure from rest of components
3051                 foreach my $dir (@dirs) {
3052                         $ref = $ref->{$dir} = {};
3053                 }
3054                 # create end marker, store $pr as a data
3055                 $ref->{''} = $pr if (!exists $ref->{''});
3056         }
3057
3058         # filter out forks, by finding shortest prefix match for paths
3059         my @filtered;
3060  PROJECT:
3061         foreach my $pr (@$projects) {
3062                 # trie lookup
3063                 my $ref = \%trie;
3064         DIR:
3065                 foreach my $dir (split('/', $pr->{'path'})) {
3066                         if (exists $ref->{''}) {
3067                                 # found [shortest] prefix, is a fork - skip it
3068                                 push @{$ref->{''}{'forks'}}, $pr;
3069                                 next PROJECT;
3070                         }
3071                         if (!exists $ref->{$dir}) {
3072                                 # not in trie, cannot have prefix, not a fork
3073                                 push @filtered, $pr;
3074                                 next PROJECT;
3075                         }
3076                         # If the dir is there, we just walk one step down the trie.
3077                         $ref = $ref->{$dir};
3078                 }
3079                 # we ran out of trie
3080                 # (shouldn't happen: it's either no match, or end marker)
3081                 push @filtered, $pr;
3082         }
3083
3084         return @filtered;
3085 }
3086
3087 # note: fill_project_list_info must be run first,
3088 # for 'descr_long' and 'ctags' to be filled
3089 sub search_projects_list {
3090         my ($projlist, %opts) = @_;
3091         my $tagfilter  = $opts{'tagfilter'};
3092         my $search_re = $opts{'search_regexp'};
3093
3094         return @$projlist
3095                 unless ($tagfilter || $search_re);
3096
3097         # searching projects require filling to be run before it;
3098         fill_project_list_info($projlist,
3099                                $tagfilter  ? 'ctags' : (),
3100                                $search_re ? ('path', 'descr') : ());
3101         my @projects;
3102  PROJECT:
3103         foreach my $pr (@$projlist) {
3104
3105                 if ($tagfilter) {
3106                         next unless ref($pr->{'ctags'}) eq 'HASH';
3107                         next unless
3108                                 grep { lc($_) eq lc($tagfilter) } keys %{$pr->{'ctags'}};
3109                 }
3110
3111                 if ($search_re) {
3112                         next unless
3113                                 $pr->{'path'} =~ /$search_re/ ||
3114                                 $pr->{'descr_long'} =~ /$search_re/;
3115                 }
3116
3117                 push @projects, $pr;
3118         }
3119
3120         return @projects;
3121 }
3122
3123 our $gitweb_project_owner = undef;
3124 sub git_get_project_list_from_file {
3125
3126         return if (defined $gitweb_project_owner);
3127
3128         $gitweb_project_owner = {};
3129         # read from file (url-encoded):
3130         # 'git%2Fgit.git Linus+Torvalds'
3131         # 'libs%2Fklibc%2Fklibc.git H.+Peter+Anvin'
3132         # 'linux%2Fhotplug%2Fudev.git Greg+Kroah-Hartman'
3133         if (-f $projects_list) {
3134                 open(my $fd, '<', $projects_list);
3135                 while (my $line = <$fd>) {
3136                         chomp $line;
3137                         my ($pr, $ow) = split ' ', $line;
3138                         $pr = unescape($pr);
3139                         $ow = unescape($ow);
3140                         $gitweb_project_owner->{$pr} = to_utf8($ow);
3141                 }
3142                 close $fd;
3143         }
3144 }
3145
3146 sub git_get_project_owner {
3147         my $project = shift;
3148         my $owner;
3149
3150         return undef unless $project;
3151         $git_dir = "$projectroot/$project";
3152
3153         if (!defined $gitweb_project_owner) {
3154                 git_get_project_list_from_file();
3155         }
3156
3157         if (exists $gitweb_project_owner->{$project}) {
3158                 $owner = $gitweb_project_owner->{$project};
3159         }
3160         if (!defined $owner){
3161                 $owner = git_get_project_config('owner');
3162         }
3163         if (!defined $owner) {
3164                 $owner = get_file_owner("$git_dir");
3165         }
3166
3167         return $owner;
3168 }
3169
3170 sub git_get_last_activity {
3171         my ($path) = @_;
3172         my $fd;
3173
3174         $git_dir = "$projectroot/$path";
3175         open($fd, "-|", git_cmd(), 'for-each-ref',
3176              '--format=%(committer)',
3177              '--sort=-committerdate',
3178              '--count=1',
3179              'refs/heads') or return;
3180         my $most_recent = <$fd>;
3181         close $fd or return;
3182         if (defined $most_recent &&
3183             $most_recent =~ / (\d+) [-+][01]\d\d\d$/) {
3184                 my $timestamp = $1;
3185                 my $age = time - $timestamp;
3186                 return ($age, age_string($age));
3187         }
3188         return (undef, undef);
3189 }
3190
3191 # Implementation note: when a single remote is wanted, we cannot use 'git
3192 # remote show -n' because that command always work (assuming it's a remote URL
3193 # if it's not defined), and we cannot use 'git remote show' because that would
3194 # try to make a network roundtrip. So the only way to find if that particular
3195 # remote is defined is to walk the list provided by 'git remote -v' and stop if
3196 # and when we find what we want.
3197 sub git_get_remotes_list {
3198         my $wanted = shift;
3199         my %remotes = ();
3200
3201         open my $fd, '-|' , git_cmd(), 'remote', '-v';
3202         return unless $fd;
3203         while (my $remote = <$fd>) {
3204                 chomp $remote;
3205                 $remote =~ s!\t(.*?)\s+\((\w+)\)$!!;
3206                 next if $wanted and not $remote eq $wanted;
3207                 my ($url, $key) = ($1, $2);
3208
3209                 $remotes{$remote} ||= { 'heads' => () };
3210                 $remotes{$remote}{$key} = $url;
3211         }
3212         close $fd or return;
3213         return wantarray ? %remotes : \%remotes;
3214 }
3215
3216 # Takes a hash of remotes as first parameter and fills it by adding the
3217 # available remote heads for each of the indicated remotes.
3218 sub fill_remote_heads {
3219         my $remotes = shift;
3220         my @heads = map { "remotes/$_" } keys %$remotes;
3221         my @remoteheads = git_get_heads_list(undef, @heads);
3222         foreach my $remote (keys %$remotes) {
3223                 $remotes->{$remote}{'heads'} = [ grep {
3224                         $_->{'name'} =~ s!^$remote/!!
3225                         } @remoteheads ];
3226         }
3227 }
3228
3229 sub git_get_references {
3230         my $type = shift || "";
3231         my %refs;
3232         # 5dc01c595e6c6ec9ccda4f6f69c131c0dd945f8c refs/tags/v2.6.11
3233         # c39ae07f393806ccf406ef966e9a15afc43cc36a refs/tags/v2.6.11^{}
3234         open my $fd, "-|", git_cmd(), "show-ref", "--dereference",
3235                 ($type ? ("--", "refs/$type") : ()) # use -- <pattern> if $type
3236                 or return;
3237
3238         while (my $line = <$fd>) {
3239                 chomp $line;
3240                 if ($line =~ m!^([0-9a-fA-F]{40})\srefs/($type.*)$!) {
3241                         if (defined $refs{$1}) {
3242                                 push @{$refs{$1}}, $2;
3243                         } else {
3244                                 $refs{$1} = [ $2 ];
3245                         }
3246                 }
3247         }
3248         close $fd or return;
3249         return \%refs;
3250 }
3251
3252 sub git_get_rev_name_tags {
3253         my $hash = shift || return undef;
3254
3255         open my $fd, "-|", git_cmd(), "name-rev", "--tags", $hash
3256                 or return;
3257         my $name_rev = <$fd>;
3258         close $fd;
3259
3260         if ($name_rev =~ m|^$hash tags/(.*)$|) {
3261                 return $1;
3262         } else {
3263                 # catches also '$hash undefined' output
3264                 return undef;
3265         }
3266 }
3267
3268 ## ----------------------------------------------------------------------
3269 ## parse to hash functions
3270
3271 sub parse_date {
3272         my $epoch = shift;
3273         my $tz = shift || "-0000";
3274
3275         my %date;
3276         my @months = ("Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec");
3277         my @days = ("Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat");
3278         my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($epoch);
3279         $date{'hour'} = $hour;
3280         $date{'minute'} = $min;
3281         $date{'mday'} = $mday;
3282         $date{'day'} = $days[$wday];
3283         $date{'month'} = $months[$mon];
3284         $date{'rfc2822'}   = sprintf "%s, %d %s %4d %02d:%02d:%02d +0000",
3285                              $days[$wday], $mday, $months[$mon], 1900+$year, $hour ,$min, $sec;
3286         $date{'mday-time'} = sprintf "%d %s %02d:%02d",
3287                              $mday, $months[$mon], $hour ,$min;
3288         $date{'iso-8601'}  = sprintf "%04d-%02d-%02dT%02d:%02d:%02dZ",
3289                              1900+$year, 1+$mon, $mday, $hour ,$min, $sec;
3290
3291         my ($tz_sign, $tz_hour, $tz_min) =
3292                 ($tz =~ m/^([-+])(\d\d)(\d\d)$/);
3293         $tz_sign = ($tz_sign eq '-' ? -1 : +1);
3294         my $local = $epoch + $tz_sign*((($tz_hour*60) + $tz_min)*60);
3295         ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($local);
3296         $date{'hour_local'} = $hour;
3297         $date{'minute_local'} = $min;
3298         $date{'tz_local'} = $tz;
3299         $date{'iso-tz'} = sprintf("%04d-%02d-%02d %02d:%02d:%02d %s",
3300                                   1900+$year, $mon+1, $mday,
3301                                   $hour, $min, $sec, $tz);
3302         return %date;
3303 }
3304
3305 sub parse_tag {
3306         my $tag_id = shift;
3307         my %tag;
3308         my @comment;
3309
3310         open my $fd, "-|", git_cmd(), "cat-file", "tag", $tag_id or return;
3311         $tag{'id'} = $tag_id;
3312         while (my $line = <$fd>) {
3313                 chomp $line;
3314                 if ($line =~ m/^object ([0-9a-fA-F]{40})$/) {
3315                         $tag{'object'} = $1;
3316                 } elsif ($line =~ m/^type (.+)$/) {
3317                         $tag{'type'} = $1;
3318                 } elsif ($line =~ m/^tag (.+)$/) {
3319                         $tag{'name'} = $1;
3320                 } elsif ($line =~ m/^tagger (.*) ([0-9]+) (.*)$/) {
3321                         $tag{'author'} = $1;
3322                         $tag{'author_epoch'} = $2;
3323                         $tag{'author_tz'} = $3;
3324                         if ($tag{'author'} =~ m/^([^<]+) <([^>]*)>/) {
3325                                 $tag{'author_name'}  = $1;
3326                                 $tag{'author_email'} = $2;
3327                         } else {
3328                                 $tag{'author_name'} = $tag{'author'};
3329                         }
3330                 } elsif ($line =~ m/--BEGIN/) {
3331                         push @comment, $line;
3332                         last;
3333                 } elsif ($line eq "") {
3334                         last;
3335                 }
3336         }
3337         push @comment, <$fd>;
3338         $tag{'comment'} = \@comment;
3339         close $fd or return;
3340         if (!defined $tag{'name'}) {
3341                 return
3342         };
3343         return %tag
3344 }
3345
3346 sub parse_commit_text {
3347         my ($commit_text, $withparents) = @_;
3348         my @commit_lines = split '\n', $commit_text;
3349         my %co;
3350
3351         pop @commit_lines; # Remove '\0'
3352
3353         if (! @commit_lines) {
3354                 return;
3355         }
3356
3357         my $header = shift @commit_lines;
3358         if ($header !~ m/^[0-9a-fA-F]{40}/) {
3359                 return;
3360         }
3361         ($co{'id'}, my @parents) = split ' ', $header;
3362         while (my $line = shift @commit_lines) {
3363                 last if $line eq "\n";
3364                 if ($line =~ m/^tree ([0-9a-fA-F]{40})$/) {
3365                         $co{'tree'} = $1;
3366                 } elsif ((!defined $withparents) && ($line =~ m/^parent ([0-9a-fA-F]{40})$/)) {
3367                         push @parents, $1;
3368                 } elsif ($line =~ m/^author (.*) ([0-9]+) (.*)$/) {
3369                         $co{'author'} = to_utf8($1);
3370                         $co{'author_epoch'} = $2;
3371                         $co{'author_tz'} = $3;
3372                         if ($co{'author'} =~ m/^([^<]+) <([^>]*)>/) {
3373                                 $co{'author_name'}  = $1;
3374                                 $co{'author_email'} = $2;
3375                         } else {
3376                                 $co{'author_name'} = $co{'author'};
3377                         }
3378                 } elsif ($line =~ m/^committer (.*) ([0-9]+) (.*)$/) {
3379                         $co{'committer'} = to_utf8($1);
3380                         $co{'committer_epoch'} = $2;
3381                         $co{'committer_tz'} = $3;
3382                         if ($co{'committer'} =~ m/^([^<]+) <([^>]*)>/) {
3383                                 $co{'committer_name'}  = $1;
3384                                 $co{'committer_email'} = $2;
3385                         } else {
3386                                 $co{'committer_name'} = $co{'committer'};
3387                         }
3388                 }
3389         }
3390         if (!defined $co{'tree'}) {
3391                 return;
3392         };
3393         $co{'parents'} = \@parents;
3394         $co{'parent'} = $parents[0];
3395
3396         foreach my $title (@commit_lines) {
3397                 $title =~ s/^    //;
3398                 if ($title ne "") {
3399                         $co{'title'} = chop_str($title, 80, 5);
3400                         # remove leading stuff of merges to make the interesting part visible
3401                         if (length($title) > 50) {
3402                                 $title =~ s/^Automatic //;
3403                                 $title =~ s/^merge (of|with) /Merge ... /i;
3404                                 if (length($title) > 50) {
3405                                         $title =~ s/(http|rsync):\/\///;
3406                                 }
3407                                 if (length($title) > 50) {
3408                                         $title =~ s/(master|www|rsync)\.//;
3409                                 }
3410                                 if (length($title) > 50) {
3411                                         $title =~ s/kernel.org:?//;
3412                                 }
3413                                 if (length($title) > 50) {
3414                                         $title =~ s/\/pub\/scm//;
3415                                 }
3416                         }
3417                         $co{'title_short'} = chop_str($title, 50, 5);
3418                         last;
3419                 }
3420         }
3421         if (! defined $co{'title'} || $co{'title'} eq "") {
3422                 $co{'title'} = $co{'title_short'} = '(no commit message)';
3423         }
3424         # remove added spaces
3425         foreach my $line (@commit_lines) {
3426                 $line =~ s/^    //;
3427         }
3428         $co{'comment'} = \@commit_lines;
3429
3430         my $age = time - $co{'committer_epoch'};
3431         $co{'age'} = $age;
3432         $co{'age_string'} = age_string($age);
3433         my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($co{'committer_epoch'});
3434         if ($age > 60*60*24*7*2) {
3435                 $co{'age_string_date'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
3436                 $co{'age_string_age'} = $co{'age_string'};
3437         } else {
3438                 $co{'age_string_date'} = $co{'age_string'};
3439                 $co{'age_string_age'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
3440         }
3441         return %co;
3442 }
3443
3444 sub parse_commit {
3445         my ($commit_id) = @_;
3446         my %co;
3447
3448         local $/ = "\0";
3449
3450         open my $fd, "-|", git_cmd(), "rev-list",
3451                 "--parents",
3452                 "--header",
3453                 "--max-count=1",
3454                 $commit_id,
3455                 "--",
3456                 or die_error(500, "Open git-rev-list failed");
3457         %co = parse_commit_text(<$fd>, 1);
3458         close $fd;
3459
3460         return %co;
3461 }
3462
3463 sub parse_commits {
3464         my ($commit_id, $maxcount, $skip, $filename, @args) = @_;
3465         my @cos;
3466
3467         $maxcount ||= 1;
3468         $skip ||= 0;
3469
3470         local $/ = "\0";
3471
3472         open my $fd, "-|", git_cmd(), "rev-list",
3473                 "--header",
3474                 @args,
3475                 ("--max-count=" . $maxcount),
3476                 ("--skip=" . $skip),
3477                 @extra_options,
3478                 $commit_id,
3479                 "--",
3480                 ($filename ? ($filename) : ())
3481                 or die_error(500, "Open git-rev-list failed");
3482         while (my $line = <$fd>) {
3483                 my %co = parse_commit_text($line);
3484                 push @cos, \%co;
3485         }
3486         close $fd;
3487
3488         return wantarray ? @cos : \@cos;
3489 }
3490
3491 # parse line of git-diff-tree "raw" output
3492 sub parse_difftree_raw_line {
3493         my $line = shift;
3494         my %res;
3495
3496         # ':100644 100644 03b218260e99b78c6df0ed378e59ed9205ccc96d 3b93d5e7cc7f7dd4ebed13a5cc1a4ad976fc94d8 M   ls-files.c'
3497         # ':100644 100644 7f9281985086971d3877aca27704f2aaf9c448ce bc190ebc71bbd923f2b728e505408f5e54bd073a M   rev-tree.c'
3498         if ($line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)([0-9]{0,3})\t(.*)$/) {
3499                 $res{'from_mode'} = $1;
3500                 $res{'to_mode'} = $2;
3501                 $res{'from_id'} = $3;
3502                 $res{'to_id'} = $4;
3503                 $res{'status'} = $5;
3504                 $res{'similarity'} = $6;
3505                 if ($res{'status'} eq 'R' || $res{'status'} eq 'C') { # renamed or copied
3506                         ($res{'from_file'}, $res{'to_file'}) = map { unquote($_) } split("\t", $7);
3507                 } else {
3508                         $res{'from_file'} = $res{'to_file'} = $res{'file'} = unquote($7);
3509                 }
3510         }
3511         # '::100755 100755 100755 60e79ca1b01bc8b057abe17ddab484699a7f5fdb 94067cc5f73388f33722d52ae02f44692bc07490 94067cc5f73388f33722d52ae02f44692bc07490 MR git-gui/git-gui.sh'
3512         # combined diff (for merge commit)
3513         elsif ($line =~ s/^(::+)((?:[0-7]{6} )+)((?:[0-9a-fA-F]{40} )+)([a-zA-Z]+)\t(.*)$//) {
3514                 $res{'nparents'}  = length($1);
3515                 $res{'from_mode'} = [ split(' ', $2) ];
3516                 $res{'to_mode'} = pop @{$res{'from_mode'}};
3517                 $res{'from_id'} = [ split(' ', $3) ];
3518                 $res{'to_id'} = pop @{$res{'from_id'}};
3519                 $res{'status'} = [ split('', $4) ];
3520                 $res{'to_file'} = unquote($5);
3521         }
3522         # 'c512b523472485aef4fff9e57b229d9d243c967f'
3523         elsif ($line =~ m/^([0-9a-fA-F]{40})$/) {
3524                 $res{'commit'} = $1;
3525         }
3526
3527         return wantarray ? %res : \%res;
3528 }
3529
3530 # wrapper: return parsed line of git-diff-tree "raw" output
3531 # (the argument might be raw line, or parsed info)
3532 sub parsed_difftree_line {
3533         my $line_or_ref = shift;
3534
3535         if (ref($line_or_ref) eq "HASH") {
3536                 # pre-parsed (or generated by hand)
3537                 return $line_or_ref;
3538         } else {
3539                 return parse_difftree_raw_line($line_or_ref);
3540         }
3541 }
3542
3543 # parse line of git-ls-tree output
3544 sub parse_ls_tree_line {
3545         my $line = shift;
3546         my %opts = @_;
3547         my %res;
3548
3549         if ($opts{'-l'}) {
3550                 #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa   16717  panic.c'
3551                 $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40}) +(-|[0-9]+)\t(.+)$/s;
3552
3553                 $res{'mode'} = $1;
3554                 $res{'type'} = $2;
3555                 $res{'hash'} = $3;
3556                 $res{'size'} = $4;
3557                 if ($opts{'-z'}) {
3558                         $res{'name'} = $5;
3559                 } else {
3560                         $res{'name'} = unquote($5);
3561                 }
3562         } else {
3563                 #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
3564                 $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t(.+)$/s;
3565
3566                 $res{'mode'} = $1;
3567                 $res{'type'} = $2;
3568                 $res{'hash'} = $3;
3569                 if ($opts{'-z'}) {
3570                         $res{'name'} = $4;
3571                 } else {
3572                         $res{'name'} = unquote($4);
3573                 }
3574         }
3575
3576         return wantarray ? %res : \%res;
3577 }
3578
3579 # generates _two_ hashes, references to which are passed as 2 and 3 argument
3580 sub parse_from_to_diffinfo {
3581         my ($diffinfo, $from, $to, @parents) = @_;
3582
3583         if ($diffinfo->{'nparents'}) {
3584                 # combined diff
3585                 $from->{'file'} = [];
3586                 $from->{'href'} = [];
3587                 fill_from_file_info($diffinfo, @parents)
3588                         unless exists $diffinfo->{'from_file'};
3589                 for (my $i = 0; $i < $diffinfo->{'nparents'}; $i++) {
3590                         $from->{'file'}[$i] =
3591                                 defined $diffinfo->{'from_file'}[$i] ?
3592                                         $diffinfo->{'from_file'}[$i] :
3593                                         $diffinfo->{'to_file'};
3594                         if ($diffinfo->{'status'}[$i] ne "A") { # not new (added) file
3595                                 $from->{'href'}[$i] = href(action=>"blob",
3596                                                            hash_base=>$parents[$i],
3597                                                            hash=>$diffinfo->{'from_id'}[$i],
3598                                                            file_name=>$from->{'file'}[$i]);
3599                         } else {
3600                                 $from->{'href'}[$i] = undef;
3601                         }
3602                 }
3603         } else {
3604                 # ordinary (not combined) diff
3605                 $from->{'file'} = $diffinfo->{'from_file'};
3606                 if ($diffinfo->{'status'} ne "A") { # not new (added) file
3607                         $from->{'href'} = href(action=>"blob", hash_base=>$hash_parent,
3608                                                hash=>$diffinfo->{'from_id'},
3609                                                file_name=>$from->{'file'});
3610                 } else {
3611                         delete $from->{'href'};
3612                 }
3613         }
3614
3615         $to->{'file'} = $diffinfo->{'to_file'};
3616         if (!is_deleted($diffinfo)) { # file exists in result
3617                 $to->{'href'} = href(action=>"blob", hash_base=>$hash,
3618                                      hash=>$diffinfo->{'to_id'},
3619                                      file_name=>$to->{'file'});
3620         } else {
3621                 delete $to->{'href'};
3622         }
3623 }
3624
3625 ## ......................................................................
3626 ## parse to array of hashes functions
3627
3628 sub git_get_heads_list {
3629         my ($limit, @classes) = @_;
3630         @classes = ('heads') unless @classes;
3631         my @patterns = map { "refs/$_" } @classes;
3632         my @headslist;
3633
3634         open my $fd, '-|', git_cmd(), 'for-each-ref',
3635                 ($limit ? '--count='.($limit+1) : ()), '--sort=-committerdate',
3636                 '--format=%(objectname) %(refname) %(subject)%00%(committer)',
3637                 @patterns
3638                 or return;
3639         while (my $line = <$fd>) {
3640                 my %ref_item;
3641
3642                 chomp $line;
3643                 my ($refinfo, $committerinfo) = split(/\0/, $line);
3644                 my ($hash, $name, $title) = split(' ', $refinfo, 3);
3645                 my ($committer, $epoch, $tz) =
3646                         ($committerinfo =~ /^(.*) ([0-9]+) (.*)$/);
3647                 $ref_item{'fullname'}  = $name;
3648                 $name =~ s!^refs/(?:head|remote)s/!!;
3649
3650                 $ref_item{'name'}  = $name;
3651                 $ref_item{'id'}    = $hash;
3652                 $ref_item{'title'} = $title || '(no commit message)';
3653                 $ref_item{'epoch'} = $epoch;
3654                 if ($epoch) {
3655                         $ref_item{'age'} = age_string(time - $ref_item{'epoch'});
3656                 } else {
3657                         $ref_item{'age'} = "unknown";
3658                 }
3659
3660                 push @headslist, \%ref_item;
3661         }
3662         close $fd;
3663
3664         return wantarray ? @headslist : \@headslist;
3665 }
3666
3667 sub git_get_tags_list {
3668         my $limit = shift;
3669         my @tagslist;
3670
3671         open my $fd, '-|', git_cmd(), 'for-each-ref',
3672                 ($limit ? '--count='.($limit+1) : ()), '--sort=-creatordate',
3673                 '--format=%(objectname) %(objecttype) %(refname) '.
3674                 '%(*objectname) %(*objecttype) %(subject)%00%(creator)',
3675                 'refs/tags'
3676                 or return;
3677         while (my $line = <$fd>) {
3678                 my %ref_item;
3679
3680                 chomp $line;
3681                 my ($refinfo, $creatorinfo) = split(/\0/, $line);
3682                 my ($id, $type, $name, $refid, $reftype, $title) = split(' ', $refinfo, 6);
3683                 my ($creator, $epoch, $tz) =
3684                         ($creatorinfo =~ /^(.*) ([0-9]+) (.*)$/);
3685                 $ref_item{'fullname'} = $name;
3686                 $name =~ s!^refs/tags/!!;
3687
3688                 $ref_item{'type'} = $type;
3689                 $ref_item{'id'} = $id;
3690                 $ref_item{'name'} = $name;
3691                 if ($type eq "tag") {
3692                         $ref_item{'subject'} = $title;
3693                         $ref_item{'reftype'} = $reftype;
3694                         $ref_item{'refid'}   = $refid;
3695                 } else {
3696                         $ref_item{'reftype'} = $type;
3697                         $ref_item{'refid'}   = $id;
3698                 }
3699
3700                 if ($type eq "tag" || $type eq "commit") {
3701                         $ref_item{'epoch'} = $epoch;
3702                         if ($epoch) {
3703                                 $ref_item{'age'} = age_string(time - $ref_item{'epoch'});
3704                         } else {
3705                                 $ref_item{'age'} = "unknown";
3706                         }
3707                 }
3708
3709                 push @tagslist, \%ref_item;
3710         }
3711         close $fd;
3712
3713         return wantarray ? @tagslist : \@tagslist;
3714 }
3715
3716 ## ----------------------------------------------------------------------
3717 ## filesystem-related functions
3718
3719 sub get_file_owner {
3720         my $path = shift;
3721
3722         my ($dev, $ino, $mode, $nlink, $st_uid, $st_gid, $rdev, $size) = stat($path);
3723         my ($name, $passwd, $uid, $gid, $quota, $comment, $gcos, $dir, $shell) = getpwuid($st_uid);
3724         if (!defined $gcos) {
3725                 return undef;
3726         }
3727         my $owner = $gcos;
3728         $owner =~ s/[,;].*$//;
3729         return to_utf8($owner);
3730 }
3731
3732 # assume that file exists
3733 sub insert_file {
3734         my $filename = shift;
3735
3736         open my $fd, '<', $filename;
3737         print map { to_utf8($_) } <$fd>;
3738         close $fd;
3739 }
3740
3741 ## ......................................................................
3742 ## mimetype related functions
3743
3744 sub mimetype_guess_file {
3745         my $filename = shift;
3746         my $mimemap = shift;
3747         -r $mimemap or return undef;
3748
3749         my %mimemap;
3750         open(my $mh, '<', $mimemap) or return undef;
3751         while (<$mh>) {
3752                 next if m/^#/; # skip comments
3753                 my ($mimetype, @exts) = split(/\s+/);
3754                 foreach my $ext (@exts) {
3755                         $mimemap{$ext} = $mimetype;
3756                 }
3757         }
3758         close($mh);
3759
3760         $filename =~ /\.([^.]*)$/;
3761         return $mimemap{$1};
3762 }
3763
3764 sub mimetype_guess {
3765         my $filename = shift;
3766         my $mime;
3767         $filename =~ /\./ or return undef;
3768
3769         if ($mimetypes_file) {
3770                 my $file = $mimetypes_file;
3771                 if ($file !~ m!^/!) { # if it is relative path
3772                         # it is relative to project
3773                         $file = "$projectroot/$project/$file";
3774                 }
3775                 $mime = mimetype_guess_file($filename, $file);
3776         }
3777         $mime ||= mimetype_guess_file($filename, '/etc/mime.types');
3778         return $mime;
3779 }
3780
3781 sub blob_mimetype {
3782         my $fd = shift;
3783         my $filename = shift;
3784
3785         if ($filename) {
3786                 my $mime = mimetype_guess($filename);
3787                 $mime and return $mime;
3788         }
3789
3790         # just in case
3791         return $default_blob_plain_mimetype unless $fd;
3792
3793         if (-T $fd) {
3794                 return 'text/plain';
3795         } elsif (! $filename) {
3796                 return 'application/octet-stream';
3797         } elsif ($filename =~ m/\.png$/i) {
3798                 return 'image/png';
3799         } elsif ($filename =~ m/\.gif$/i) {
3800                 return 'image/gif';
3801         } elsif ($filename =~ m/\.jpe?g$/i) {
3802                 return 'image/jpeg';
3803         } else {
3804                 return 'application/octet-stream';
3805         }
3806 }
3807
3808 sub blob_contenttype {
3809         my ($fd, $file_name, $type) = @_;
3810
3811         $type ||= blob_mimetype($fd, $file_name);
3812         if ($type eq 'text/plain' && defined $default_text_plain_charset) {
3813                 $type .= "; charset=$default_text_plain_charset";
3814         }
3815
3816         return $type;
3817 }
3818
3819 # guess file syntax for syntax highlighting; return undef if no highlighting
3820 # the name of syntax can (in the future) depend on syntax highlighter used
3821 sub guess_file_syntax {
3822         my ($highlight, $mimetype, $file_name) = @_;
3823         return undef unless ($highlight && defined $file_name);
3824         my $basename = basename($file_name, '.in');
3825         return $highlight_basename{$basename}
3826                 if exists $highlight_basename{$basename};
3827
3828         $basename =~ /\.([^.]*)$/;
3829         my $ext = $1 or return undef;
3830         return $highlight_ext{$ext}
3831                 if exists $highlight_ext{$ext};
3832
3833         return undef;
3834 }
3835
3836 # run highlighter and return FD of its output,
3837 # or return original FD if no highlighting
3838 sub run_highlighter {
3839         my ($fd, $highlight, $syntax) = @_;
3840         return $fd unless ($highlight && defined $syntax);
3841
3842         close $fd;
3843         open $fd, quote_command(git_cmd(), "cat-file", "blob", $hash)." | ".
3844                   quote_command($highlight_bin).
3845                   " --replace-tabs=8 --fragment --syntax $syntax |"
3846                 or die_error(500, "Couldn't open file or run syntax highlighter");
3847         return $fd;
3848 }
3849
3850 ## ======================================================================
3851 ## functions printing HTML: header, footer, error page
3852
3853 sub get_page_title {
3854         my $title = to_utf8($site_name);
3855
3856         unless (defined $project) {
3857                 if (defined $project_filter) {
3858                         $title .= " - projects in '" . esc_path($project_filter) . "'";
3859                 }
3860                 return $title;
3861         }
3862         $title .= " - " . to_utf8($project);
3863
3864         return $title unless (defined $action);
3865         $title .= "/$action"; # $action is US-ASCII (7bit ASCII)
3866
3867         return $title unless (defined $file_name);
3868         $title .= " - " . esc_path($file_name);
3869         if ($action eq "tree" && $file_name !~ m|/$|) {
3870                 $title .= "/";
3871         }
3872
3873         return $title;
3874 }
3875
3876 sub get_content_type_html {
3877         # require explicit support from the UA if we are to send the page as
3878         # 'application/xhtml+xml', otherwise send it as plain old 'text/html'.
3879         # we have to do this because MSIE sometimes globs '*/*', pretending to
3880         # support xhtml+xml but choking when it gets what it asked for.
3881         if (defined $cgi->http('HTTP_ACCEPT') &&
3882             $cgi->http('HTTP_ACCEPT') =~ m/(,|;|\s|^)application\/xhtml\+xml(,|;|\s|$)/ &&
3883             $cgi->Accept('application/xhtml+xml') != 0) {
3884                 return 'application/xhtml+xml';
3885         } else {
3886                 return 'text/html';
3887         }
3888 }
3889
3890 sub print_feed_meta {
3891         if (defined $project) {
3892                 my %href_params = get_feed_info();
3893                 if (!exists $href_params{'-title'}) {
3894                         $href_params{'-title'} = 'log';
3895                 }
3896
3897                 foreach my $format (qw(RSS Atom)) {
3898                         my $type = lc($format);
3899                         my %link_attr = (
3900                                 '-rel' => 'alternate',
3901                                 '-title' => esc_attr("$project - $href_params{'-title'} - $format feed"),
3902                                 '-type' => "application/$type+xml"
3903                         );
3904
3905                         $href_params{'extra_options'} = undef;
3906                         $href_params{'action'} = $type;
3907                         $link_attr{'-href'} = href(%href_params);
3908                         print "<link ".
3909                               "rel=\"$link_attr{'-rel'}\" ".
3910                               "title=\"$link_attr{'-title'}\" ".
3911                               "href=\"$link_attr{'-href'}\" ".
3912                               "type=\"$link_attr{'-type'}\" ".
3913                               "/>\n";
3914
3915                         $href_params{'extra_options'} = '--no-merges';
3916                         $link_attr{'-href'} = href(%href_params);
3917                         $link_attr{'-title'} .= ' (no merges)';
3918                         print "<link ".
3919                               "rel=\"$link_attr{'-rel'}\" ".
3920                               "title=\"$link_attr{'-title'}\" ".
3921                               "href=\"$link_attr{'-href'}\" ".
3922                               "type=\"$link_attr{'-type'}\" ".
3923                               "/>\n";
3924                 }
3925
3926         } else {
3927                 printf('<link rel="alternate" title="%s projects list" '.
3928                        'href="%s" type="text/plain; charset=utf-8" />'."\n",
3929                        esc_attr($site_name), href(project=>undef, action=>"project_index"));
3930                 printf('<link rel="alternate" title="%s projects feeds" '.
3931                        'href="%s" type="text/x-opml" />'."\n",
3932                        esc_attr($site_name), href(project=>undef, action=>"opml"));
3933         }
3934 }
3935
3936 sub print_header_links {
3937         my $status = shift;
3938
3939         # print out each stylesheet that exist, providing backwards capability
3940         # for those people who defined $stylesheet in a config file
3941         if (defined $stylesheet) {
3942                 print '<link rel="stylesheet" type="text/css" href="'.esc_url($stylesheet).'"/>'."\n";
3943         } else {
3944                 foreach my $stylesheet (@stylesheets) {
3945                         next unless $stylesheet;
3946                         print '<link rel="stylesheet" type="text/css" href="'.esc_url($stylesheet).'"/>'."\n";
3947                 }
3948         }
3949         print_feed_meta()
3950                 if ($status eq '200 OK');
3951         if (defined $favicon) {
3952                 print qq(<link rel="shortcut icon" href=").esc_url($favicon).qq(" type="image/png" />\n);
3953         }
3954 }
3955
3956 sub print_nav_breadcrumbs_path {
3957         my $dirprefix = undef;
3958         while (my $part = shift) {
3959                 $dirprefix .= "/" if defined $dirprefix;
3960                 $dirprefix .= $part;
3961                 print $cgi->a({-href => href(project => undef,
3962                                              project_filter => $dirprefix,
3963                                              action => "project_list")},
3964                               esc_html($part)) . " / ";
3965         }
3966 }
3967
3968 sub print_nav_breadcrumbs {
3969         my %opts = @_;
3970
3971         print $cgi->a({-href => esc_url($home_link)}, $home_link_str) . " / ";
3972         if (defined $project) {
3973                 my @dirname = split '/', $project;
3974                 my $projectbasename = pop @dirname;
3975                 print_nav_breadcrumbs_path(@dirname);
3976                 print $cgi->a({-href => href(action=>"summary")}, esc_html($projectbasename));
3977                 if (defined $action) {
3978                         my $action_print = $action ;
3979                         if (defined $opts{-action_extra}) {
3980                                 $action_print = $cgi->a({-href => href(action=>$action)},
3981                                         $action);
3982                         }
3983                         print " / $action_print";
3984                 }
3985                 if (defined $opts{-action_extra}) {
3986                         print " / $opts{-action_extra}";
3987                 }
3988                 print "\n";
3989         } elsif (defined $project_filter) {
3990                 print_nav_breadcrumbs_path(split '/', $project_filter);
3991         }
3992 }
3993
3994 sub print_search_form {
3995         if (!defined $searchtext) {
3996                 $searchtext = "";
3997         }
3998         my $search_hash;
3999         if (defined $hash_base) {
4000                 $search_hash = $hash_base;
4001         } elsif (defined $hash) {
4002                 $search_hash = $hash;
4003         } else {
4004                 $search_hash = "HEAD";
4005         }
4006         my $action = $my_uri;
4007         my $use_pathinfo = gitweb_check_feature('pathinfo');
4008         if ($use_pathinfo) {
4009                 $action .= "/".esc_url($project);
4010         }
4011         print $cgi->startform(-method => "get", -action => $action) .
4012               "<div class=\"search\">\n" .
4013               (!$use_pathinfo &&
4014               $cgi->input({-name=>"p", -value=>$project, -type=>"hidden"}) . "\n") .
4015               $cgi->input({-name=>"a", -value=>"search", -type=>"hidden"}) . "\n" .
4016               $cgi->input({-name=>"h", -value=>$search_hash, -type=>"hidden"}) . "\n" .
4017               $cgi->popup_menu(-name => 'st', -default => 'commit',
4018                                -values => ['commit', 'grep', 'author', 'committer', 'pickaxe']) .
4019               $cgi->sup($cgi->a({-href => href(action=>"search_help")}, "?")) .
4020               " search:\n",
4021               $cgi->textfield(-name => "s", -value => $searchtext, -override => 1) . "\n" .
4022               "<span title=\"Extended regular expression\">" .
4023               $cgi->checkbox(-name => 'sr', -value => 1, -label => 're',
4024                              -checked => $search_use_regexp) .
4025               "</span>" .
4026               "</div>" .
4027               $cgi->end_form() . "\n";
4028 }
4029
4030 sub git_header_html {
4031         my $status = shift || "200 OK";
4032         my $expires = shift;
4033         my %opts = @_;
4034
4035         my $title = get_page_title();
4036         my $content_type = get_content_type_html();
4037         print $cgi->header(-type=>$content_type, -charset => 'utf-8',
4038                            -status=> $status, -expires => $expires)
4039                 unless ($opts{'-no_http_header'});
4040         my $mod_perl_version = $ENV{'MOD_PERL'} ? " $ENV{'MOD_PERL'}" : '';
4041         print <<EOF;
4042 <?xml version="1.0" encoding="utf-8"?>
4043 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
4044 <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en-US" lang="en-US">
4045 <!-- git web interface version $version, (C) 2005-2006, Kay Sievers <kay.sievers\@vrfy.org>, Christian Gierke -->
4046 <!-- git core binaries version $git_version -->
4047 <head>
4048 <meta http-equiv="content-type" content="$content_type; charset=utf-8"/>
4049 <meta name="generator" content="gitweb/$version git/$git_version$mod_perl_version"/>
4050 <meta name="robots" content="index, nofollow"/>
4051 <title>$title</title>
4052 EOF
4053         # the stylesheet, favicon etc urls won't work correctly with path_info
4054         # unless we set the appropriate base URL
4055         if ($ENV{'PATH_INFO'}) {
4056                 print "<base href=\"".esc_url($base_url)."\" />\n";
4057         }
4058         print_header_links($status);
4059
4060         if (defined $site_html_head_string) {
4061                 print to_utf8($site_html_head_string);
4062         }
4063
4064         print "</head>\n" .
4065               "<body>\n";
4066
4067         if (defined $site_header && -f $site_header) {
4068                 insert_file($site_header);
4069         }
4070
4071         print "<div class=\"page_header\">\n";
4072         if (defined $logo) {
4073                 print $cgi->a({-href => esc_url($logo_url),
4074                                -title => $logo_label},
4075                               $cgi->img({-src => esc_url($logo),
4076                                          -width => 72, -height => 27,
4077                                          -alt => "git",
4078                                          -class => "logo"}));
4079         }
4080         print_nav_breadcrumbs(%opts);
4081         print "</div>\n";
4082
4083         my $have_search = gitweb_check_feature('search');
4084         if (defined $project && $have_search) {
4085                 print_search_form();
4086         }
4087 }
4088
4089 sub git_footer_html {
4090         my $feed_class = 'rss_logo';
4091
4092         print "<div class=\"page_footer\">\n";
4093         if (defined $project) {
4094                 my $descr = git_get_project_description($project);
4095                 if (defined $descr) {
4096                         print "<div class=\"page_footer_text\">" . esc_html($descr) . "</div>\n";
4097                 }
4098
4099                 my %href_params = get_feed_info();
4100                 if (!%href_params) {
4101                         $feed_class .= ' generic';
4102                 }
4103                 $href_params{'-title'} ||= 'log';
4104
4105                 foreach my $format (qw(RSS Atom)) {
4106                         $href_params{'action'} = lc($format);
4107                         print $cgi->a({-href => href(%href_params),
4108                                       -title => "$href_params{'-title'} $format feed",
4109                                       -class => $feed_class}, $format)."\n";
4110                 }
4111
4112         } else {
4113                 print $cgi->a({-href => href(project=>undef, action=>"opml",
4114                                              project_filter => $project_filter),
4115                               -class => $feed_class}, "OPML") . " ";
4116                 print $cgi->a({-href => href(project=>undef, action=>"project_index",
4117                                              project_filter => $project_filter),
4118                               -class => $feed_class}, "TXT") . "\n";
4119         }
4120         print "</div>\n"; # class="page_footer"
4121
4122         if (defined $t0 && gitweb_check_feature('timed')) {
4123                 print "<div id=\"generating_info\">\n";
4124                 print 'This page took '.
4125                       '<span id="generating_time" class="time_span">'.
4126                       tv_interval($t0, [ gettimeofday() ]).
4127                       ' seconds </span>'.
4128                       ' and '.
4129                       '<span id="generating_cmd">'.
4130                       $number_of_git_cmds.
4131                       '</span> git commands '.
4132                       " to generate.\n";
4133                 print "</div>\n"; # class="page_footer"
4134         }
4135
4136         if (defined $site_footer && -f $site_footer) {
4137                 insert_file($site_footer);
4138         }
4139
4140         print qq!<script type="text/javascript" src="!.esc_url($javascript).qq!"></script>\n!;
4141         if (defined $action &&
4142             $action eq 'blame_incremental') {
4143                 print qq!<script type="text/javascript">\n!.
4144                       qq!startBlame("!. href(action=>"blame_data", -replay=>1) .qq!",\n!.
4145                       qq!           "!. href() .qq!");\n!.
4146                       qq!</script>\n!;
4147         } else {
4148                 my ($jstimezone, $tz_cookie, $datetime_class) =
4149                         gitweb_get_feature('javascript-timezone');
4150
4151                 print qq!<script type="text/javascript">\n!.
4152                       qq!window.onload = function () {\n!;
4153                 if (gitweb_check_feature('javascript-actions')) {
4154                         print qq!       fixLinks();\n!;
4155                 }
4156                 if ($jstimezone && $tz_cookie && $datetime_class) {
4157                         print qq!       var tz_cookie = { name: '$tz_cookie', expires: 14, path: '/' };\n!. # in days
4158                               qq!       onloadTZSetup('$jstimezone', tz_cookie, '$datetime_class');\n!;
4159                 }
4160                 print qq!};\n!.
4161                       qq!</script>\n!;
4162         }
4163
4164         print "</body>\n" .
4165               "</html>";
4166 }
4167
4168 # die_error(<http_status_code>, <error_message>[, <detailed_html_description>])
4169 # Example: die_error(404, 'Hash not found')
4170 # By convention, use the following status codes (as defined in RFC 2616):
4171 # 400: Invalid or missing CGI parameters, or
4172 #      requested object exists but has wrong type.
4173 # 403: Requested feature (like "pickaxe" or "snapshot") not enabled on
4174 #      this server or project.
4175 # 404: Requested object/revision/project doesn't exist.
4176 # 500: The server isn't configured properly, or
4177 #      an internal error occurred (e.g. failed assertions caused by bugs), or
4178 #      an unknown error occurred (e.g. the git binary died unexpectedly).
4179 # 503: The server is currently unavailable (because it is overloaded,
4180 #      or down for maintenance).  Generally, this is a temporary state.
4181 sub die_error {
4182         my $status = shift || 500;
4183         my $error = esc_html(shift) || "Internal Server Error";
4184         my $extra = shift;
4185         my %opts = @_;
4186
4187         my %http_responses = (
4188                 400 => '400 Bad Request',
4189                 403 => '403 Forbidden',
4190                 404 => '404 Not Found',
4191                 500 => '500 Internal Server Error',
4192                 503 => '503 Service Unavailable',
4193         );
4194         git_header_html($http_responses{$status}, undef, %opts);
4195         print <<EOF;
4196 <div class="page_body">
4197 <br /><br />
4198 $status - $error
4199 <br />
4200 EOF
4201         if (defined $extra) {
4202                 print "<hr />\n" .
4203                       "$extra\n";
4204         }
4205         print "</div>\n";
4206
4207         git_footer_html();
4208         goto DONE_GITWEB
4209                 unless ($opts{'-error_handler'});
4210 }
4211
4212 ## ----------------------------------------------------------------------
4213 ## functions printing or outputting HTML: navigation
4214
4215 sub git_print_page_nav {
4216         my ($current, $suppress, $head, $treehead, $treebase, $extra) = @_;
4217         $extra = '' if !defined $extra; # pager or formats
4218
4219         my @navs = qw(summary shortlog log commit commitdiff tree);
4220         if ($suppress) {
4221                 @navs = grep { $_ ne $suppress } @navs;
4222         }
4223
4224         my %arg = map { $_ => {action=>$_} } @navs;
4225         if (defined $head) {
4226                 for (qw(commit commitdiff)) {
4227                         $arg{$_}{'hash'} = $head;
4228                 }
4229                 if ($current =~ m/^(tree | log | shortlog | commit | commitdiff | search)$/x) {
4230                         for (qw(shortlog log)) {
4231                                 $arg{$_}{'hash'} = $head;
4232                         }
4233                 }
4234         }
4235
4236         $arg{'tree'}{'hash'} = $treehead if defined $treehead;
4237         $arg{'tree'}{'hash_base'} = $treebase if defined $treebase;
4238
4239         my @actions = gitweb_get_feature('actions');
4240         my %repl = (
4241                 '%' => '%',
4242                 'n' => $project,         # project name
4243                 'f' => $git_dir,         # project path within filesystem
4244                 'h' => $treehead || '',  # current hash ('h' parameter)
4245                 'b' => $treebase || '',  # hash base ('hb' parameter)
4246         );
4247         while (@actions) {
4248                 my ($label, $link, $pos) = splice(@actions,0,3);
4249                 # insert
4250                 @navs = map { $_ eq $pos ? ($_, $label) : $_ } @navs;
4251                 # munch munch
4252                 $link =~ s/%([%nfhb])/$repl{$1}/g;
4253                 $arg{$label}{'_href'} = $link;
4254         }
4255
4256         print "<div class=\"page_nav\">\n" .
4257                 (join " | ",
4258                  map { $_ eq $current ?
4259                        $_ : $cgi->a({-href => ($arg{$_}{_href} ? $arg{$_}{_href} : href(%{$arg{$_}}))}, "$_")
4260                  } @navs);
4261         print "<br/>\n$extra<br/>\n" .
4262               "</div>\n";
4263 }
4264
4265 # returns a submenu for the nagivation of the refs views (tags, heads,
4266 # remotes) with the current view disabled and the remotes view only
4267 # available if the feature is enabled
4268 sub format_ref_views {
4269         my ($current) = @_;
4270         my @ref_views = qw{tags heads};
4271         push @ref_views, 'remotes' if gitweb_check_feature('remote_heads');
4272         return join " | ", map {
4273                 $_ eq $current ? $_ :
4274                 $cgi->a({-href => href(action=>$_)}, $_)
4275         } @ref_views
4276 }
4277
4278 sub format_paging_nav {
4279         my ($action, $page, $has_next_link) = @_;
4280         my $paging_nav;
4281
4282
4283         if ($page > 0) {
4284                 $paging_nav .=
4285                         $cgi->a({-href => href(-replay=>1, page=>undef)}, "first") .
4286                         " &sdot; " .
4287                         $cgi->a({-href => href(-replay=>1, page=>$page-1),
4288                                  -accesskey => "p", -title => "Alt-p"}, "prev");
4289         } else {
4290                 $paging_nav .= "first &sdot; prev";
4291         }
4292
4293         if ($has_next_link) {
4294                 $paging_nav .= " &sdot; " .
4295                         $cgi->a({-href => href(-replay=>1, page=>$page+1),
4296                                  -accesskey => "n", -title => "Alt-n"}, "next");
4297         } else {
4298                 $paging_nav .= " &sdot; next";
4299         }
4300
4301         return $paging_nav;
4302 }
4303
4304 ## ......................................................................
4305 ## functions printing or outputting HTML: div
4306
4307 sub git_print_header_div {
4308         my ($action, $title, $hash, $hash_base) = @_;
4309         my %args = ();
4310
4311         $args{'action'} = $action;
4312         $args{'hash'} = $hash if $hash;
4313         $args{'hash_base'} = $hash_base if $hash_base;
4314
4315         print "<div class=\"header\">\n" .
4316               $cgi->a({-href => href(%args), -class => "title"},
4317               $title ? $title : $action) .
4318               "\n</div>\n";
4319 }
4320
4321 sub format_repo_url {
4322         my ($name, $url) = @_;
4323         return "<tr class=\"metadata_url\"><td>$name</td><td>$url</td></tr>\n";
4324 }
4325
4326 # Group output by placing it in a DIV element and adding a header.
4327 # Options for start_div() can be provided by passing a hash reference as the
4328 # first parameter to the function.
4329 # Options to git_print_header_div() can be provided by passing an array
4330 # reference. This must follow the options to start_div if they are present.
4331 # The content can be a scalar, which is output as-is, a scalar reference, which
4332 # is output after html escaping, an IO handle passed either as *handle or
4333 # *handle{IO}, or a function reference. In the latter case all following
4334 # parameters will be taken as argument to the content function call.
4335 sub git_print_section {
4336         my ($div_args, $header_args, $content);
4337         my $arg = shift;
4338         if (ref($arg) eq 'HASH') {
4339                 $div_args = $arg;
4340                 $arg = shift;
4341         }
4342         if (ref($arg) eq 'ARRAY') {
4343                 $header_args = $arg;
4344                 $arg = shift;
4345         }
4346         $content = $arg;
4347
4348         print $cgi->start_div($div_args);
4349         git_print_header_div(@$header_args);
4350
4351         if (ref($content) eq 'CODE') {
4352                 $content->(@_);
4353         } elsif (ref($content) eq 'SCALAR') {
4354                 print esc_html($$content);
4355         } elsif (ref($content) eq 'GLOB' or ref($content) eq 'IO::Handle') {
4356                 print <$content>;
4357         } elsif (!ref($content) && defined($content)) {
4358                 print $content;
4359         }
4360
4361         print $cgi->end_div;
4362 }
4363
4364 sub format_timestamp_html {
4365         my $date = shift;
4366         my $strtime = $date->{'rfc2822'};
4367
4368         my (undef, undef, $datetime_class) =
4369                 gitweb_get_feature('javascript-timezone');
4370         if ($datetime_class) {
4371                 $strtime = qq!<span class="$datetime_class">$strtime</span>!;
4372         }
4373
4374         my $localtime_format = '(%02d:%02d %s)';
4375         if ($date->{'hour_local'} < 6) {
4376                 $localtime_format = '(<span class="atnight">%02d:%02d</span> %s)';
4377         }
4378         $strtime .= ' ' .
4379                     sprintf($localtime_format,
4380                             $date->{'hour_local'}, $date->{'minute_local'}, $date->{'tz_local'});
4381
4382         return $strtime;
4383 }
4384
4385 # Outputs the author name and date in long form
4386 sub git_print_authorship {
4387         my $co = shift;
4388         my %opts = @_;
4389         my $tag = $opts{-tag} || 'div';
4390         my $author = $co->{'author_name'};
4391
4392         my %ad = parse_date($co->{'author_epoch'}, $co->{'author_tz'});
4393         print "<$tag class=\"author_date\">" .
4394               format_search_author($author, "author", esc_html($author)) .
4395               " [".format_timestamp_html(\%ad)."]".
4396               git_get_avatar($co->{'author_email'}, -pad_before => 1) .
4397               "</$tag>\n";
4398 }
4399
4400 # Outputs table rows containing the full author or committer information,
4401 # in the format expected for 'commit' view (& similar).
4402 # Parameters are a commit hash reference, followed by the list of people
4403 # to output information for. If the list is empty it defaults to both
4404 # author and committer.
4405 sub git_print_authorship_rows {
4406         my $co = shift;
4407         # too bad we can't use @people = @_ || ('author', 'committer')
4408         my @people = @_;
4409         @people = ('author', 'committer') unless @people;
4410         foreach my $who (@people) {
4411                 my %wd = parse_date($co->{"${who}_epoch"}, $co->{"${who}_tz"});
4412                 print "<tr><td>$who</td><td>" .
4413                       format_search_author($co->{"${who}_name"}, $who,
4414                                            esc_html($co->{"${who}_name"})) . " " .
4415                       format_search_author($co->{"${who}_email"}, $who,
4416                                            esc_html("<" . $co->{"${who}_email"} . ">")) .
4417                       "</td><td rowspan=\"2\">" .
4418                       git_get_avatar($co->{"${who}_email"}, -size => 'double') .
4419                       "</td></tr>\n" .
4420                       "<tr>" .
4421                       "<td></td><td>" .
4422                       format_timestamp_html(\%wd) .
4423                       "</td>" .
4424                       "</tr>\n";
4425         }
4426 }
4427
4428 sub git_print_page_path {
4429         my $name = shift;
4430         my $type = shift;
4431         my $hb = shift;
4432
4433
4434         print "<div class=\"page_path\">";
4435         print $cgi->a({-href => href(action=>"tree", hash_base=>$hb),
4436                       -title => 'tree root'}, to_utf8("[$project]"));
4437         print " / ";
4438         if (defined $name) {
4439                 my @dirname = split '/', $name;
4440                 my $basename = pop @dirname;
4441                 my $fullname = '';
4442
4443                 foreach my $dir (@dirname) {
4444                         $fullname .= ($fullname ? '/' : '') . $dir;
4445                         print $cgi->a({-href => href(action=>"tree", file_name=>$fullname,
4446                                                      hash_base=>$hb),
4447                                       -title => $fullname}, esc_path($dir));
4448                         print " / ";
4449                 }
4450                 if (defined $type && $type eq 'blob') {
4451                         print $cgi->a({-href => href(action=>"blob_plain", file_name=>$file_name,
4452                                                      hash_base=>$hb),
4453                                       -title => $name}, esc_path($basename));
4454                 } elsif (defined $type && $type eq 'tree') {
4455                         print $cgi->a({-href => href(action=>"tree", file_name=>$file_name,
4456                                                      hash_base=>$hb),
4457                                       -title => $name}, esc_path($basename));
4458                         print " / ";
4459                 } else {
4460                         print esc_path($basename);
4461                 }
4462         }
4463         print "<br/></div>\n";
4464 }
4465
4466 sub git_print_log {
4467         my $log = shift;
4468         my %opts = @_;
4469
4470         if ($opts{'-remove_title'}) {
4471                 # remove title, i.e. first line of log
4472                 shift @$log;
4473         }
4474         # remove leading empty lines
4475         while (defined $log->[0] && $log->[0] eq "") {
4476                 shift @$log;
4477         }
4478
4479         # print log
4480         my $signoff = 0;
4481         my $empty = 0;
4482         foreach my $line (@$log) {
4483                 if ($line =~ m/^ *(signed[ \-]off[ \-]by[ :]|acked[ \-]by[ :]|cc[ :])/i) {
4484                         $signoff = 1;
4485                         $empty = 0;
4486                         if (! $opts{'-remove_signoff'}) {
4487                                 print "<span class=\"signoff\">" . esc_html($line) . "</span><br/>\n";
4488                                 next;
4489                         } else {
4490                                 # remove signoff lines
4491                                 next;
4492                         }
4493                 } else {
4494                         $signoff = 0;
4495                 }
4496
4497                 # print only one empty line
4498                 # do not print empty line after signoff
4499                 if ($line eq "") {
4500                         next if ($empty || $signoff);
4501                         $empty = 1;
4502                 } else {
4503                         $empty = 0;
4504                 }
4505
4506                 print format_log_line_html($line) . "<br/>\n";
4507         }
4508
4509         if ($opts{'-final_empty_line'}) {
4510                 # end with single empty line
4511                 print "<br/>\n" unless $empty;
4512         }
4513 }
4514
4515 # return link target (what link points to)
4516 sub git_get_link_target {
4517         my $hash = shift;
4518         my $link_target;
4519
4520         # read link
4521         open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
4522                 or return;
4523         {
4524                 local $/ = undef;
4525                 $link_target = <$fd>;
4526         }
4527         close $fd
4528                 or return;
4529
4530         return $link_target;
4531 }
4532
4533 # given link target, and the directory (basedir) the link is in,
4534 # return target of link relative to top directory (top tree);
4535 # return undef if it is not possible (including absolute links).
4536 sub normalize_link_target {
4537         my ($link_target, $basedir) = @_;
4538
4539         # absolute symlinks (beginning with '/') cannot be normalized
4540         return if (substr($link_target, 0, 1) eq '/');
4541
4542         # normalize link target to path from top (root) tree (dir)
4543         my $path;
4544         if ($basedir) {
4545                 $path = $basedir . '/' . $link_target;
4546         } else {
4547                 # we are in top (root) tree (dir)
4548                 $path = $link_target;
4549         }
4550
4551         # remove //, /./, and /../
4552         my @path_parts;
4553         foreach my $part (split('/', $path)) {
4554                 # discard '.' and ''
4555                 next if (!$part || $part eq '.');
4556                 # handle '..'
4557                 if ($part eq '..') {
4558                         if (@path_parts) {
4559                                 pop @path_parts;
4560                         } else {
4561                                 # link leads outside repository (outside top dir)
4562                                 return;
4563                         }
4564                 } else {
4565                         push @path_parts, $part;
4566                 }
4567         }
4568         $path = join('/', @path_parts);
4569
4570         return $path;
4571 }
4572
4573 # print tree entry (row of git_tree), but without encompassing <tr> element
4574 sub git_print_tree_entry {
4575         my ($t, $basedir, $hash_base, $have_blame) = @_;
4576
4577         my %base_key = ();
4578         $base_key{'hash_base'} = $hash_base if defined $hash_base;
4579
4580         # The format of a table row is: mode list link.  Where mode is
4581         # the mode of the entry, list is the name of the entry, an href,
4582         # and link is the action links of the entry.
4583
4584         print "<td class=\"mode\">" . mode_str($t->{'mode'}) . "</td>\n";
4585         if (exists $t->{'size'}) {
4586                 print "<td class=\"size\">$t->{'size'}</td>\n";
4587         }
4588         if ($t->{'type'} eq "blob") {
4589                 print "<td class=\"list\">" .
4590                         $cgi->a({-href => href(action=>"blob", hash=>$t->{'hash'},
4591                                                file_name=>"$basedir$t->{'name'}", %base_key),
4592                                 -class => "list"}, esc_path($t->{'name'}));
4593                 if (S_ISLNK(oct $t->{'mode'})) {
4594                         my $link_target = git_get_link_target($t->{'hash'});
4595                         if ($link_target) {
4596                                 my $norm_target = normalize_link_target($link_target, $basedir);
4597                                 if (defined $norm_target) {
4598                                         print " -> " .
4599                                               $cgi->a({-href => href(action=>"object", hash_base=>$hash_base,
4600                                                                      file_name=>$norm_target),
4601                                                        -title => $norm_target}, esc_path($link_target));
4602                                 } else {
4603                                         print " -> " . esc_path($link_target);
4604                                 }
4605                         }
4606                 }
4607                 print "</td>\n";
4608                 print "<td class=\"link\">";
4609                 print $cgi->a({-href => href(action=>"blob", hash=>$t->{'hash'},
4610                                              file_name=>"$basedir$t->{'name'}", %base_key)},
4611                               "blob");
4612                 if ($have_blame) {
4613                         print " | " .
4614                               $cgi->a({-href => href(action=>"blame", hash=>$t->{'hash'},
4615                                                      file_name=>"$basedir$t->{'name'}", %base_key)},
4616                                       "blame");
4617                 }
4618                 if (defined $hash_base) {
4619                         print " | " .
4620                               $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
4621                                                      hash=>$t->{'hash'}, file_name=>"$basedir$t->{'name'}")},
4622                                       "history");
4623                 }
4624                 print " | " .
4625                         $cgi->a({-href => href(action=>"blob_plain", hash_base=>$hash_base,
4626                                                file_name=>"$basedir$t->{'name'}")},
4627                                 "raw");
4628                 print "</td>\n";
4629
4630         } elsif ($t->{'type'} eq "tree") {
4631                 print "<td class=\"list\">";
4632                 print $cgi->a({-href => href(action=>"tree", hash=>$t->{'hash'},
4633                                              file_name=>"$basedir$t->{'name'}",
4634                                              %base_key)},
4635                               esc_path($t->{'name'}));
4636                 print "</td>\n";
4637                 print "<td class=\"link\">";
4638                 print $cgi->a({-href => href(action=>"tree", hash=>$t->{'hash'},
4639                                              file_name=>"$basedir$t->{'name'}",
4640                                              %base_key)},
4641                               "tree");
4642                 if (defined $hash_base) {
4643                         print " | " .
4644                               $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
4645                                                      file_name=>"$basedir$t->{'name'}")},
4646                                       "history");
4647                 }
4648                 print "</td>\n";
4649         } else {
4650                 # unknown object: we can only present history for it
4651                 # (this includes 'commit' object, i.e. submodule support)
4652                 print "<td class=\"list\">" .
4653                       esc_path($t->{'name'}) .
4654                       "</td>\n";
4655                 print "<td class=\"link\">";
4656                 if (defined $hash_base) {
4657                         print $cgi->a({-href => href(action=>"history",
4658                                                      hash_base=>$hash_base,
4659                                                      file_name=>"$basedir$t->{'name'}")},
4660                                       "history");
4661                 }
4662                 print "</td>\n";
4663         }
4664 }
4665
4666 ## ......................................................................
4667 ## functions printing large fragments of HTML
4668
4669 # get pre-image filenames for merge (combined) diff
4670 sub fill_from_file_info {
4671         my ($diff, @parents) = @_;
4672
4673         $diff->{'from_file'} = [ ];
4674         $diff->{'from_file'}[$diff->{'nparents'} - 1] = undef;
4675         for (my $i = 0; $i < $diff->{'nparents'}; $i++) {
4676                 if ($diff->{'status'}[$i] eq 'R' ||
4677                     $diff->{'status'}[$i] eq 'C') {
4678                         $diff->{'from_file'}[$i] =
4679                                 git_get_path_by_hash($parents[$i], $diff->{'from_id'}[$i]);
4680                 }
4681         }
4682
4683         return $diff;
4684 }
4685
4686 # is current raw difftree line of file deletion
4687 sub is_deleted {
4688         my $diffinfo = shift;
4689
4690         return $diffinfo->{'to_id'} eq ('0' x 40);
4691 }
4692
4693 # does patch correspond to [previous] difftree raw line
4694 # $diffinfo  - hashref of parsed raw diff format
4695 # $patchinfo - hashref of parsed patch diff format
4696 #              (the same keys as in $diffinfo)
4697 sub is_patch_split {
4698         my ($diffinfo, $patchinfo) = @_;
4699
4700         return defined $diffinfo && defined $patchinfo
4701                 && $diffinfo->{'to_file'} eq $patchinfo->{'to_file'};
4702 }
4703
4704
4705 sub git_difftree_body {
4706         my ($difftree, $hash, @parents) = @_;
4707         my ($parent) = $parents[0];
4708         my $have_blame = gitweb_check_feature('blame');
4709         print "<div class=\"list_head\">\n";
4710         if ($#{$difftree} > 10) {
4711                 print(($#{$difftree} + 1) . " files changed:\n");
4712         }
4713         print "</div>\n";
4714
4715         print "<table class=\"" .
4716               (@parents > 1 ? "combined " : "") .
4717               "diff_tree\">\n";
4718
4719         # header only for combined diff in 'commitdiff' view
4720         my $has_header = @$difftree && @parents > 1 && $action eq 'commitdiff';
4721         if ($has_header) {
4722                 # table header
4723                 print "<thead><tr>\n" .
4724                        "<th></th><th></th>\n"; # filename, patchN link
4725                 for (my $i = 0; $i < @parents; $i++) {
4726                         my $par = $parents[$i];
4727                         print "<th>" .
4728                               $cgi->a({-href => href(action=>"commitdiff",
4729                                                      hash=>$hash, hash_parent=>$par),
4730                                        -title => 'commitdiff to parent number ' .
4731                                                   ($i+1) . ': ' . substr($par,0,7)},
4732                                       $i+1) .
4733                               "&nbsp;</th>\n";
4734                 }
4735                 print "</tr></thead>\n<tbody>\n";
4736         }
4737
4738         my $alternate = 1;
4739         my $patchno = 0;
4740         foreach my $line (@{$difftree}) {
4741                 my $diff = parsed_difftree_line($line);
4742
4743                 if ($alternate) {
4744                         print "<tr class=\"dark\">\n";
4745                 } else {
4746                         print "<tr class=\"light\">\n";
4747                 }
4748                 $alternate ^= 1;
4749
4750                 if (exists $diff->{'nparents'}) { # combined diff
4751
4752                         fill_from_file_info($diff, @parents)
4753                                 unless exists $diff->{'from_file'};
4754
4755                         if (!is_deleted($diff)) {
4756                                 # file exists in the result (child) commit
4757                                 print "<td>" .
4758                                       $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
4759                                                              file_name=>$diff->{'to_file'},
4760                                                              hash_base=>$hash),
4761                                               -class => "list"}, esc_path($diff->{'to_file'})) .
4762                                       "</td>\n";
4763                         } else {
4764                                 print "<td>" .
4765                                       esc_path($diff->{'to_file'}) .
4766                                       "</td>\n";
4767                         }
4768
4769                         if ($action eq 'commitdiff') {
4770                                 # link to patch
4771                                 $patchno++;
4772                                 print "<td class=\"link\">" .
4773                                       $cgi->a({-href => href(-anchor=>"patch$patchno")},
4774                                               "patch") .
4775                                       " | " .
4776                                       "</td>\n";
4777                         }
4778
4779                         my $has_history = 0;
4780                         my $not_deleted = 0;
4781                         for (my $i = 0; $i < $diff->{'nparents'}; $i++) {
4782                                 my $hash_parent = $parents[$i];
4783                                 my $from_hash = $diff->{'from_id'}[$i];
4784                                 my $from_path = $diff->{'from_file'}[$i];
4785                                 my $status = $diff->{'status'}[$i];
4786
4787                                 $has_history ||= ($status ne 'A');
4788                                 $not_deleted ||= ($status ne 'D');
4789
4790                                 if ($status eq 'A') {
4791                                         print "<td  class=\"link\" align=\"right\"> | </td>\n";
4792                                 } elsif ($status eq 'D') {
4793                                         print "<td class=\"link\">" .
4794                                               $cgi->a({-href => href(action=>"blob",
4795                                                                      hash_base=>$hash,
4796                                                                      hash=>$from_hash,
4797                                                                      file_name=>$from_path)},
4798                                                       "blob" . ($i+1)) .
4799                                               " | </td>\n";
4800                                 } else {
4801                                         if ($diff->{'to_id'} eq $from_hash) {
4802                                                 print "<td class=\"link nochange\">";
4803                                         } else {
4804                                                 print "<td class=\"link\">";
4805                                         }
4806                                         print $cgi->a({-href => href(action=>"blobdiff",
4807                                                                      hash=>$diff->{'to_id'},
4808                                                                      hash_parent=>$from_hash,
4809                                                                      hash_base=>$hash,
4810                                                                      hash_parent_base=>$hash_parent,
4811                                                                      file_name=>$diff->{'to_file'},
4812                                                                      file_parent=>$from_path)},
4813                                                       "diff" . ($i+1)) .
4814                                               " | </td>\n";
4815                                 }
4816                         }
4817
4818                         print "<td class=\"link\">";
4819                         if ($not_deleted) {
4820                                 print $cgi->a({-href => href(action=>"blob",
4821                                                              hash=>$diff->{'to_id'},
4822                                                              file_name=>$diff->{'to_file'},
4823                                                              hash_base=>$hash)},
4824                                               "blob");
4825                                 print " | " if ($has_history);
4826                         }
4827                         if ($has_history) {
4828                                 print $cgi->a({-href => href(action=>"history",
4829                                                              file_name=>$diff->{'to_file'},
4830                                                              hash_base=>$hash)},
4831                                               "history");
4832                         }
4833                         print "</td>\n";
4834
4835                         print "</tr>\n";
4836                         next; # instead of 'else' clause, to avoid extra indent
4837                 }
4838                 # else ordinary diff
4839
4840                 my ($to_mode_oct, $to_mode_str, $to_file_type);
4841                 my ($from_mode_oct, $from_mode_str, $from_file_type);
4842                 if ($diff->{'to_mode'} ne ('0' x 6)) {
4843                         $to_mode_oct = oct $diff->{'to_mode'};
4844                         if (S_ISREG($to_mode_oct)) { # only for regular file
4845                                 $to_mode_str = sprintf("%04o", $to_mode_oct & 0777); # permission bits
4846                         }
4847                         $to_file_type = file_type($diff->{'to_mode'});
4848                 }
4849                 if ($diff->{'from_mode'} ne ('0' x 6)) {
4850                         $from_mode_oct = oct $diff->{'from_mode'};
4851                         if (S_ISREG($from_mode_oct)) { # only for regular file
4852                                 $from_mode_str = sprintf("%04o", $from_mode_oct & 0777); # permission bits
4853                         }
4854                         $from_file_type = file_type($diff->{'from_mode'});
4855                 }
4856
4857                 if ($diff->{'status'} eq "A") { # created
4858                         my $mode_chng = "<span class=\"file_status new\">[new $to_file_type";
4859                         $mode_chng   .= " with mode: $to_mode_str" if $to_mode_str;
4860                         $mode_chng   .= "]</span>";
4861                         print "<td>";
4862                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
4863                                                      hash_base=>$hash, file_name=>$diff->{'file'}),
4864                                       -class => "list"}, esc_path($diff->{'file'}));
4865                         print "</td>\n";
4866                         print "<td>$mode_chng</td>\n";
4867                         print "<td class=\"link\">";
4868                         if ($action eq 'commitdiff') {
4869                                 # link to patch
4870                                 $patchno++;
4871                                 print $cgi->a({-href => href(-anchor=>"patch$patchno")},
4872                                               "patch") .
4873                                       " | ";
4874                         }
4875                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
4876                                                      hash_base=>$hash, file_name=>$diff->{'file'})},
4877                                       "blob");
4878                         print "</td>\n";
4879
4880                 } elsif ($diff->{'status'} eq "D") { # deleted
4881                         my $mode_chng = "<span class=\"file_status deleted\">[deleted $from_file_type]</span>";
4882                         print "<td>";
4883                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'from_id'},
4884                                                      hash_base=>$parent, file_name=>$diff->{'file'}),
4885                                        -class => "list"}, esc_path($diff->{'file'}));
4886                         print "</td>\n";
4887                         print "<td>$mode_chng</td>\n";
4888                         print "<td class=\"link\">";
4889                         if ($action eq 'commitdiff') {
4890                                 # link to patch
4891                                 $patchno++;
4892                                 print $cgi->a({-href => href(-anchor=>"patch$patchno")},
4893                                               "patch") .
4894                                       " | ";
4895                         }
4896                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'from_id'},
4897                                                      hash_base=>$parent, file_name=>$diff->{'file'})},
4898                                       "blob") . " | ";
4899                         if ($have_blame) {
4900                                 print $cgi->a({-href => href(action=>"blame", hash_base=>$parent,
4901                                                              file_name=>$diff->{'file'})},
4902                                               "blame") . " | ";
4903                         }
4904                         print $cgi->a({-href => href(action=>"history", hash_base=>$parent,
4905                                                      file_name=>$diff->{'file'})},
4906                                       "history");
4907                         print "</td>\n";
4908
4909                 } elsif ($diff->{'status'} eq "M" || $diff->{'status'} eq "T") { # modified, or type changed
4910                         my $mode_chnge = "";
4911                         if ($diff->{'from_mode'} != $diff->{'to_mode'}) {
4912                                 $mode_chnge = "<span class=\"file_status mode_chnge\">[changed";
4913                                 if ($from_file_type ne $to_file_type) {
4914                                         $mode_chnge .= " from $from_file_type to $to_file_type";
4915                                 }
4916                                 if (($from_mode_oct & 0777) != ($to_mode_oct & 0777)) {
4917                                         if ($from_mode_str && $to_mode_str) {
4918                                                 $mode_chnge .= " mode: $from_mode_str->$to_mode_str";
4919                                         } elsif ($to_mode_str) {
4920                                                 $mode_chnge .= " mode: $to_mode_str";
4921                                         }
4922                                 }
4923                                 $mode_chnge .= "]</span>\n";
4924                         }
4925                         print "<td>";
4926                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
4927                                                      hash_base=>$hash, file_name=>$diff->{'file'}),
4928                                       -class => "list"}, esc_path($diff->{'file'}));
4929                         print "</td>\n";
4930                         print "<td>$mode_chnge</td>\n";
4931                         print "<td class=\"link\">";
4932                         if ($action eq 'commitdiff') {
4933                                 # link to patch
4934                                 $patchno++;
4935                                 print $cgi->a({-href => href(-anchor=>"patch$patchno")},
4936                                               "patch") .
4937                                       " | ";
4938                         } elsif ($diff->{'to_id'} ne $diff->{'from_id'}) {
4939                                 # "commit" view and modified file (not onlu mode changed)
4940                                 print $cgi->a({-href => href(action=>"blobdiff",
4941                                                              hash=>$diff->{'to_id'}, hash_parent=>$diff->{'from_id'},
4942                                                              hash_base=>$hash, hash_parent_base=>$parent,
4943                                                              file_name=>$diff->{'file'})},
4944                                               "diff") .
4945                                       " | ";
4946                         }
4947                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
4948                                                      hash_base=>$hash, file_name=>$diff->{'file'})},
4949                                        "blob") . " | ";
4950                         if ($have_blame) {
4951                                 print $cgi->a({-href => href(action=>"blame", hash_base=>$hash,
4952                                                              file_name=>$diff->{'file'})},
4953                                               "blame") . " | ";
4954                         }
4955                         print $cgi->a({-href => href(action=>"history", hash_base=>$hash,
4956                                                      file_name=>$diff->{'file'})},
4957                                       "history");
4958                         print "</td>\n";
4959
4960                 } elsif ($diff->{'status'} eq "R" || $diff->{'status'} eq "C") { # renamed or copied
4961                         my %status_name = ('R' => 'moved', 'C' => 'copied');
4962                         my $nstatus = $status_name{$diff->{'status'}};
4963                         my $mode_chng = "";
4964                         if ($diff->{'from_mode'} != $diff->{'to_mode'}) {
4965                                 # mode also for directories, so we cannot use $to_mode_str
4966                                 $mode_chng = sprintf(", mode: %04o", $to_mode_oct & 0777);
4967                         }
4968                         print "<td>" .
4969                               $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
4970                                                      hash=>$diff->{'to_id'}, file_name=>$diff->{'to_file'}),
4971                                       -class => "list"}, esc_path($diff->{'to_file'})) . "</td>\n" .
4972                               "<td><span class=\"file_status $nstatus\">[$nstatus from " .
4973                               $cgi->a({-href => href(action=>"blob", hash_base=>$parent,
4974                                                      hash=>$diff->{'from_id'}, file_name=>$diff->{'from_file'}),
4975                                       -class => "list"}, esc_path($diff->{'from_file'})) .
4976                               " with " . (int $diff->{'similarity'}) . "% similarity$mode_chng]</span></td>\n" .
4977                               "<td class=\"link\">";
4978                         if ($action eq 'commitdiff') {
4979                                 # link to patch
4980                                 $patchno++;
4981                                 print $cgi->a({-href => href(-anchor=>"patch$patchno")},
4982                                               "patch") .
4983                                       " | ";
4984                         } elsif ($diff->{'to_id'} ne $diff->{'from_id'}) {
4985                                 # "commit" view and modified file (not only pure rename or copy)
4986                                 print $cgi->a({-href => href(action=>"blobdiff",
4987                                                              hash=>$diff->{'to_id'}, hash_parent=>$diff->{'from_id'},
4988                                                              hash_base=>$hash, hash_parent_base=>$parent,
4989                                                              file_name=>$diff->{'to_file'}, file_parent=>$diff->{'from_file'})},
4990                                               "diff") .
4991                                       " | ";
4992                         }
4993                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
4994                                                      hash_base=>$parent, file_name=>$diff->{'to_file'})},
4995                                       "blob") . " | ";
4996                         if ($have_blame) {
4997                                 print $cgi->a({-href => href(action=>"blame", hash_base=>$hash,
4998                                                              file_name=>$diff->{'to_file'})},
4999                                               "blame") . " | ";
5000                         }
5001                         print $cgi->a({-href => href(action=>"history", hash_base=>$hash,
5002                                                     file_name=>$diff->{'to_file'})},
5003                                       "history");
5004                         print "</td>\n";
5005
5006                 } # we should not encounter Unmerged (U) or Unknown (X) status
5007                 print "</tr>\n";
5008         }
5009         print "</tbody>" if $has_header;
5010         print "</table>\n";
5011 }
5012
5013 # Print context lines and then rem/add lines in a side-by-side manner.
5014 sub print_sidebyside_diff_lines {
5015         my ($ctx, $rem, $add) = @_;
5016
5017         # print context block before add/rem block
5018         if (@$ctx) {
5019                 print join '',
5020                         '<div class="chunk_block ctx">',
5021                                 '<div class="old">',
5022                                 @$ctx,
5023                                 '</div>',
5024                                 '<div class="new">',
5025                                 @$ctx,
5026                                 '</div>',
5027                         '</div>';
5028         }
5029
5030         if (!@$add) {
5031                 # pure removal
5032                 print join '',
5033                         '<div class="chunk_block rem">',
5034                                 '<div class="old">',
5035                                 @$rem,
5036                                 '</div>',
5037                         '</div>';
5038         } elsif (!@$rem) {
5039                 # pure addition
5040                 print join '',
5041                         '<div class="chunk_block add">',
5042                                 '<div class="new">',
5043                                 @$add,
5044                                 '</div>',
5045                         '</div>';
5046         } else {
5047                 print join '',
5048                         '<div class="chunk_block chg">',
5049                                 '<div class="old">',
5050                                 @$rem,
5051                                 '</div>',
5052                                 '<div class="new">',
5053                                 @$add,
5054                                 '</div>',
5055                         '</div>';
5056         }
5057 }
5058
5059 # Print context lines and then rem/add lines in inline manner.
5060 sub print_inline_diff_lines {
5061         my ($ctx, $rem, $add) = @_;
5062
5063         print @$ctx, @$rem, @$add;
5064 }
5065
5066 # Format removed and added line, mark changed part and HTML-format them.
5067 # Implementation is based on contrib/diff-highlight
5068 sub format_rem_add_lines_pair {
5069         my ($rem, $add, $num_parents) = @_;
5070
5071         # We need to untabify lines before split()'ing them;
5072         # otherwise offsets would be invalid.
5073         chomp $rem;
5074         chomp $add;
5075         $rem = untabify($rem);
5076         $add = untabify($add);
5077
5078         my @rem = split(//, $rem);
5079         my @add = split(//, $add);
5080         my ($esc_rem, $esc_add);
5081         # Ignore leading +/- characters for each parent.
5082         my ($prefix_len, $suffix_len) = ($num_parents, 0);
5083         my ($prefix_has_nonspace, $suffix_has_nonspace);
5084
5085         my $shorter = (@rem < @add) ? @rem : @add;
5086         while ($prefix_len < $shorter) {
5087                 last if ($rem[$prefix_len] ne $add[$prefix_len]);
5088
5089                 $prefix_has_nonspace = 1 if ($rem[$prefix_len] !~ /\s/);
5090                 $prefix_len++;
5091         }
5092
5093         while ($prefix_len + $suffix_len < $shorter) {
5094                 last if ($rem[-1 - $suffix_len] ne $add[-1 - $suffix_len]);
5095
5096                 $suffix_has_nonspace = 1 if ($rem[-1 - $suffix_len] !~ /\s/);
5097                 $suffix_len++;
5098         }
5099
5100         # Mark lines that are different from each other, but have some common
5101         # part that isn't whitespace.  If lines are completely different, don't
5102         # mark them because that would make output unreadable, especially if
5103         # diff consists of multiple lines.
5104         if ($prefix_has_nonspace || $suffix_has_nonspace) {
5105                 $esc_rem = esc_html_hl_regions($rem, 'marked',
5106                         [$prefix_len, @rem - $suffix_len], -nbsp=>1);
5107                 $esc_add = esc_html_hl_regions($add, 'marked',
5108                         [$prefix_len, @add - $suffix_len], -nbsp=>1);
5109         } else {
5110                 $esc_rem = esc_html($rem, -nbsp=>1);
5111                 $esc_add = esc_html($add, -nbsp=>1);
5112         }
5113
5114         return format_diff_line(\$esc_rem, 'rem'),
5115                format_diff_line(\$esc_add, 'add');
5116 }
5117
5118 # HTML-format diff context, removed and added lines.
5119 sub format_ctx_rem_add_lines {
5120         my ($ctx, $rem, $add, $num_parents) = @_;
5121         my (@new_ctx, @new_rem, @new_add);
5122         my $can_highlight = 0;
5123         my $is_combined = ($num_parents > 1);
5124
5125         # Highlight if every removed line has a corresponding added line.
5126         if (@$add > 0 && @$add == @$rem) {
5127                 $can_highlight = 1;
5128
5129                 # Highlight lines in combined diff only if the chunk contains
5130                 # diff between the same version, e.g.
5131                 #
5132                 #    - a
5133                 #   -  b
5134                 #    + c
5135                 #   +  d
5136                 #
5137                 # Otherwise the highlightling would be confusing.
5138                 if ($is_combined) {
5139                         for (my $i = 0; $i < @$add; $i++) {
5140                                 my $prefix_rem = substr($rem->[$i], 0, $num_parents);
5141                                 my $prefix_add = substr($add->[$i], 0, $num_parents);
5142
5143                                 $prefix_rem =~ s/-/+/g;
5144
5145                                 if ($prefix_rem ne $prefix_add) {
5146                                         $can_highlight = 0;
5147                                         last;
5148                                 }
5149                         }
5150                 }
5151         }
5152
5153         if ($can_highlight) {
5154                 for (my $i = 0; $i < @$add; $i++) {
5155                         my ($line_rem, $line_add) = format_rem_add_lines_pair(
5156                                 $rem->[$i], $add->[$i], $num_parents);
5157                         push @new_rem, $line_rem;
5158                         push @new_add, $line_add;
5159                 }
5160         } else {
5161                 @new_rem = map { format_diff_line($_, 'rem') } @$rem;
5162                 @new_add = map { format_diff_line($_, 'add') } @$add;
5163         }
5164
5165         @new_ctx = map { format_diff_line($_, 'ctx') } @$ctx;
5166
5167         return (\@new_ctx, \@new_rem, \@new_add);
5168 }
5169
5170 # Print context lines and then rem/add lines.
5171 sub print_diff_lines {
5172         my ($ctx, $rem, $add, $diff_style, $num_parents) = @_;
5173         my $is_combined = $num_parents > 1;
5174
5175         ($ctx, $rem, $add) = format_ctx_rem_add_lines($ctx, $rem, $add,
5176                 $num_parents);
5177
5178         if ($diff_style eq 'sidebyside' && !$is_combined) {
5179                 print_sidebyside_diff_lines($ctx, $rem, $add);
5180         } else {
5181                 # default 'inline' style and unknown styles
5182                 print_inline_diff_lines($ctx, $rem, $add);
5183         }
5184 }
5185
5186 sub print_diff_chunk {
5187         my ($diff_style, $num_parents, $from, $to, @chunk) = @_;
5188         my (@ctx, @rem, @add);
5189
5190         # The class of the previous line.
5191         my $prev_class = '';
5192
5193         return unless @chunk;
5194
5195         # incomplete last line might be among removed or added lines,
5196         # or both, or among context lines: find which
5197         for (my $i = 1; $i < @chunk; $i++) {
5198                 if ($chunk[$i][0] eq 'incomplete') {
5199                         $chunk[$i][0] = $chunk[$i-1][0];
5200                 }
5201         }
5202
5203         # guardian
5204         push @chunk, ["", ""];
5205
5206         foreach my $line_info (@chunk) {
5207                 my ($class, $line) = @$line_info;
5208
5209                 # print chunk headers
5210                 if ($class && $class eq 'chunk_header') {
5211                         print format_diff_line($line, $class, $from, $to);
5212                         next;
5213                 }
5214
5215                 ## print from accumulator when have some add/rem lines or end
5216                 # of chunk (flush context lines), or when have add and rem
5217                 # lines and new block is reached (otherwise add/rem lines could
5218                 # be reordered)
5219                 if (!$class || ((@rem || @add) && $class eq 'ctx') ||
5220                     (@rem && @add && $class ne $prev_class)) {
5221                         print_diff_lines(\@ctx, \@rem, \@add,
5222                                          $diff_style, $num_parents);
5223                         @ctx = @rem = @add = ();
5224                 }
5225
5226                 ## adding lines to accumulator
5227                 # guardian value
5228                 last unless $line;
5229                 # rem, add or change
5230                 if ($class eq 'rem') {
5231                         push @rem, $line;
5232                 } elsif ($class eq 'add') {
5233                         push @add, $line;
5234                 }
5235                 # context line
5236                 if ($class eq 'ctx') {
5237                         push @ctx, $line;
5238                 }
5239
5240                 $prev_class = $class;
5241         }
5242 }
5243
5244 sub git_patchset_body {
5245         my ($fd, $diff_style, $difftree, $hash, @hash_parents) = @_;
5246         my ($hash_parent) = $hash_parents[0];
5247
5248         my $is_combined = (@hash_parents > 1);
5249         my $patch_idx = 0;
5250         my $patch_number = 0;
5251         my $patch_line;
5252         my $diffinfo;
5253         my $to_name;
5254         my (%from, %to);
5255         my @chunk; # for side-by-side diff
5256
5257         print "<div class=\"patchset\">\n";
5258
5259         # skip to first patch
5260         while ($patch_line = <$fd>) {
5261                 chomp $patch_line;
5262
5263                 last if ($patch_line =~ m/^diff /);
5264         }
5265
5266  PATCH:
5267         while ($patch_line) {
5268
5269                 # parse "git diff" header line
5270                 if ($patch_line =~ m/^diff --git (\"(?:[^\\\"]*(?:\\.[^\\\"]*)*)\"|[^ "]*) (.*)$/) {
5271                         # $1 is from_name, which we do not use
5272                         $to_name = unquote($2);
5273                         $to_name =~ s!^b/!!;
5274                 } elsif ($patch_line =~ m/^diff --(cc|combined) ("?.*"?)$/) {
5275                         # $1 is 'cc' or 'combined', which we do not use
5276                         $to_name = unquote($2);
5277                 } else {
5278                         $to_name = undef;
5279                 }
5280
5281                 # check if current patch belong to current raw line
5282                 # and parse raw git-diff line if needed
5283                 if (is_patch_split($diffinfo, { 'to_file' => $to_name })) {
5284                         # this is continuation of a split patch
5285                         print "<div class=\"patch cont\">\n";
5286                 } else {
5287                         # advance raw git-diff output if needed
5288                         $patch_idx++ if defined $diffinfo;
5289
5290                         # read and prepare patch information
5291                         $diffinfo = parsed_difftree_line($difftree->[$patch_idx]);
5292
5293                         # compact combined diff output can have some patches skipped
5294                         # find which patch (using pathname of result) we are at now;
5295                         if ($is_combined) {
5296                                 while ($to_name ne $diffinfo->{'to_file'}) {
5297                                         print "<div class=\"patch\" id=\"patch". ($patch_idx+1) ."\">\n" .
5298                                               format_diff_cc_simplified($diffinfo, @hash_parents) .
5299                                               "</div>\n";  # class="patch"
5300
5301                                         $patch_idx++;
5302                                         $patch_number++;
5303
5304                                         last if $patch_idx > $#$difftree;
5305                                         $diffinfo = parsed_difftree_line($difftree->[$patch_idx]);
5306                                 }
5307                         }
5308
5309                         # modifies %from, %to hashes
5310                         parse_from_to_diffinfo($diffinfo, \%from, \%to, @hash_parents);
5311
5312                         # this is first patch for raw difftree line with $patch_idx index
5313                         # we index @$difftree array from 0, but number patches from 1
5314                         print "<div class=\"patch\" id=\"patch". ($patch_idx+1) ."\">\n";
5315                 }
5316
5317                 # git diff header
5318                 #assert($patch_line =~ m/^diff /) if DEBUG;
5319                 #assert($patch_line !~ m!$/$!) if DEBUG; # is chomp-ed
5320                 $patch_number++;
5321                 # print "git diff" header
5322                 print format_git_diff_header_line($patch_line, $diffinfo,
5323                                                   \%from, \%to);
5324
5325                 # print extended diff header
5326                 print "<div class=\"diff extended_header\">\n";
5327         EXTENDED_HEADER:
5328                 while ($patch_line = <$fd>) {
5329                         chomp $patch_line;
5330
5331                         last EXTENDED_HEADER if ($patch_line =~ m/^--- |^diff /);
5332
5333                         print format_extended_diff_header_line($patch_line, $diffinfo,
5334                                                                \%from, \%to);
5335                 }
5336                 print "</div>\n"; # class="diff extended_header"
5337
5338                 # from-file/to-file diff header
5339                 if (! $patch_line) {
5340                         print "</div>\n"; # class="patch"
5341                         last PATCH;
5342                 }
5343                 next PATCH if ($patch_line =~ m/^diff /);
5344                 #assert($patch_line =~ m/^---/) if DEBUG;
5345
5346                 my $last_patch_line = $patch_line;
5347                 $patch_line = <$fd>;
5348                 chomp $patch_line;
5349                 #assert($patch_line =~ m/^\+\+\+/) if DEBUG;
5350
5351                 print format_diff_from_to_header($last_patch_line, $patch_line,
5352                                                  $diffinfo, \%from, \%to,
5353                                                  @hash_parents);
5354
5355                 # the patch itself
5356         LINE:
5357                 while ($patch_line = <$fd>) {
5358                         chomp $patch_line;
5359
5360                         next PATCH if ($patch_line =~ m/^diff /);
5361
5362                         my $class = diff_line_class($patch_line, \%from, \%to);
5363
5364                         if ($class eq 'chunk_header') {
5365                                 print_diff_chunk($diff_style, scalar @hash_parents, \%from, \%to, @chunk);
5366                                 @chunk = ();
5367                         }
5368
5369                         push @chunk, [ $class, $patch_line ];
5370                 }
5371
5372         } continue {
5373                 if (@chunk) {
5374                         print_diff_chunk($diff_style, scalar @hash_parents, \%from, \%to, @chunk);
5375                         @chunk = ();
5376                 }
5377                 print "</div>\n"; # class="patch"
5378         }
5379
5380         # for compact combined (--cc) format, with chunk and patch simplification
5381         # the patchset might be empty, but there might be unprocessed raw lines
5382         for (++$patch_idx if $patch_number > 0;
5383              $patch_idx < @$difftree;
5384              ++$patch_idx) {
5385                 # read and prepare patch information
5386                 $diffinfo = parsed_difftree_line($difftree->[$patch_idx]);
5387
5388                 # generate anchor for "patch" links in difftree / whatchanged part
5389                 print "<div class=\"patch\" id=\"patch". ($patch_idx+1) ."\">\n" .
5390                       format_diff_cc_simplified($diffinfo, @hash_parents) .
5391                       "</div>\n";  # class="patch"
5392
5393                 $patch_number++;
5394         }
5395
5396         if ($patch_number == 0) {
5397                 if (@hash_parents > 1) {
5398                         print "<div class=\"diff nodifferences\">Trivial merge</div>\n";
5399                 } else {
5400                         print "<div class=\"diff nodifferences\">No differences found</div>\n";
5401                 }
5402         }
5403
5404         print "</div>\n"; # class="patchset"
5405 }
5406
5407 # . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5408
5409 sub git_project_search_form {
5410         my ($searchtext, $search_use_regexp) = @_;
5411
5412         my $limit = '';
5413         if ($project_filter) {
5414                 $limit = " in '$project_filter/'";
5415         }
5416
5417         print "<div class=\"projsearch\">\n";
5418         print $cgi->startform(-method => 'get', -action => $my_uri) .
5419               $cgi->hidden(-name => 'a', -value => 'project_list')  . "\n";
5420         print $cgi->hidden(-name => 'pf', -value => $project_filter). "\n"
5421                 if (defined $project_filter);
5422         print $cgi->textfield(-name => 's', -value => $searchtext,
5423                               -title => "Search project by name and description$limit",
5424                               -size => 60) . "\n" .
5425               "<span title=\"Extended regular expression\">" .
5426               $cgi->checkbox(-name => 'sr', -value => 1, -label => 're',
5427                              -checked => $search_use_regexp) .
5428               "</span>\n" .
5429               $cgi->submit(-name => 'btnS', -value => 'Search') .
5430               $cgi->end_form() . "\n" .
5431               $cgi->a({-href => href(project => undef, searchtext => undef,
5432                                      project_filter => $project_filter)},
5433                       esc_html("List all projects$limit")) . "<br />\n";
5434         print "</div>\n";
5435 }
5436
5437 # entry for given @keys needs filling if at least one of keys in list
5438 # is not present in %$project_info
5439 sub project_info_needs_filling {
5440         my ($project_info, @keys) = @_;
5441
5442         # return List::MoreUtils::any { !exists $project_info->{$_} } @keys;
5443         foreach my $key (@keys) {
5444                 if (!exists $project_info->{$key}) {
5445                         return 1;
5446                 }
5447         }
5448         return;
5449 }
5450
5451 # fills project list info (age, description, owner, category, forks, etc.)
5452 # for each project in the list, removing invalid projects from
5453 # returned list, or fill only specified info.
5454 #
5455 # Invalid projects are removed from the returned list if and only if you
5456 # ask 'age' or 'age_string' to be filled, because they are the only fields
5457 # that run unconditionally git command that requires repository, and
5458 # therefore do always check if project repository is invalid.
5459 #
5460 # USAGE:
5461 # * fill_project_list_info(\@project_list, 'descr_long', 'ctags')
5462 #   ensures that 'descr_long' and 'ctags' fields are filled
5463 # * @project_list = fill_project_list_info(\@project_list)
5464 #   ensures that all fields are filled (and invalid projects removed)
5465 #
5466 # NOTE: modifies $projlist, but does not remove entries from it
5467 sub fill_project_list_info {
5468         my ($projlist, @wanted_keys) = @_;
5469         my @projects;
5470         my $filter_set = sub { return @_; };
5471         if (@wanted_keys) {
5472                 my %wanted_keys = map { $_ => 1 } @wanted_keys;
5473                 $filter_set = sub { return grep { $wanted_keys{$_} } @_; };
5474         }
5475
5476         my $show_ctags = gitweb_check_feature('ctags');
5477  PROJECT:
5478         foreach my $pr (@$projlist) {
5479                 if (project_info_needs_filling($pr, $filter_set->('age', 'age_string'))) {
5480                         my (@activity) = git_get_last_activity($pr->{'path'});
5481                         unless (@activity) {
5482                                 next PROJECT;
5483                         }
5484                         ($pr->{'age'}, $pr->{'age_string'}) = @activity;
5485                 }
5486                 if (project_info_needs_filling($pr, $filter_set->('descr', 'descr_long'))) {
5487                         my $descr = git_get_project_description($pr->{'path'}) || "";
5488                         $descr = to_utf8($descr);
5489                         $pr->{'descr_long'} = $descr;
5490                         $pr->{'descr'} = chop_str($descr, $projects_list_description_width, 5);
5491                 }
5492                 if (project_info_needs_filling($pr, $filter_set->('owner'))) {
5493                         $pr->{'owner'} = git_get_project_owner("$pr->{'path'}") || "";
5494                 }
5495                 if ($show_ctags &&
5496                     project_info_needs_filling($pr, $filter_set->('ctags'))) {
5497                         $pr->{'ctags'} = git_get_project_ctags($pr->{'path'});
5498                 }
5499                 if ($projects_list_group_categories &&
5500                     project_info_needs_filling($pr, $filter_set->('category'))) {
5501                         my $cat = git_get_project_category($pr->{'path'}) ||
5502                                                            $project_list_default_category;
5503                         $pr->{'category'} = to_utf8($cat);
5504                 }
5505
5506                 push @projects, $pr;
5507         }
5508
5509         return @projects;
5510 }
5511
5512 sub sort_projects_list {
5513         my ($projlist, $order) = @_;
5514         my @projects;
5515
5516         my %order_info = (
5517                 project => { key => 'path', type => 'str' },
5518                 descr => { key => 'descr_long', type => 'str' },
5519                 owner => { key => 'owner', type => 'str' },
5520                 age => { key => 'age', type => 'num' }
5521         );
5522         my $oi = $order_info{$order};
5523         return @$projlist unless defined $oi;
5524         if ($oi->{'type'} eq 'str') {
5525                 @projects = sort {$a->{$oi->{'key'}} cmp $b->{$oi->{'key'}}} @$projlist;
5526         } else {
5527                 @projects = sort {$a->{$oi->{'key'}} <=> $b->{$oi->{'key'}}} @$projlist;
5528         }
5529
5530         return @projects;
5531 }
5532
5533 # returns a hash of categories, containing the list of project
5534 # belonging to each category
5535 sub build_projlist_by_category {
5536         my ($projlist, $from, $to) = @_;
5537         my %categories;
5538
5539         $from = 0 unless defined $from;
5540         $to = $#$projlist if (!defined $to || $#$projlist < $to);
5541
5542         for (my $i = $from; $i <= $to; $i++) {
5543                 my $pr = $projlist->[$i];
5544                 push @{$categories{ $pr->{'category'} }}, $pr;
5545         }
5546
5547         return wantarray ? %categories : \%categories;
5548 }
5549
5550 # print 'sort by' <th> element, generating 'sort by $name' replay link
5551 # if that order is not selected
5552 sub print_sort_th {
5553         print format_sort_th(@_);
5554 }
5555
5556 sub format_sort_th {
5557         my ($name, $order, $header) = @_;
5558         my $sort_th = "";
5559         $header ||= ucfirst($name);
5560
5561         if ($order eq $name) {
5562                 $sort_th .= "<th>$header</th>\n";
5563         } else {
5564                 $sort_th .= "<th>" .
5565                             $cgi->a({-href => href(-replay=>1, order=>$name),
5566                                      -class => "header"}, $header) .
5567                             "</th>\n";
5568         }
5569
5570         return $sort_th;
5571 }
5572
5573 sub git_project_list_rows {
5574         my ($projlist, $from, $to, $check_forks) = @_;
5575
5576         $from = 0 unless defined $from;
5577         $to = $#$projlist if (!defined $to || $#$projlist < $to);
5578
5579         my $alternate = 1;
5580         for (my $i = $from; $i <= $to; $i++) {
5581                 my $pr = $projlist->[$i];
5582
5583                 if ($alternate) {
5584                         print "<tr class=\"dark\">\n";
5585                 } else {
5586                         print "<tr class=\"light\">\n";
5587                 }
5588                 $alternate ^= 1;
5589
5590                 if ($check_forks) {
5591                         print "<td>";
5592                         if ($pr->{'forks'}) {
5593                                 my $nforks = scalar @{$pr->{'forks'}};
5594                                 if ($nforks > 0) {
5595                                         print $cgi->a({-href => href(project=>$pr->{'path'}, action=>"forks"),
5596                                                        -title => "$nforks forks"}, "+");
5597                                 } else {
5598                                         print $cgi->span({-title => "$nforks forks"}, "+");
5599                                 }
5600                         }
5601                         print "</td>\n";
5602                 }
5603                 print "<td>" . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary"),
5604                                         -class => "list"},
5605                                        esc_html_match_hl($pr->{'path'}, $search_regexp)) .
5606                       "</td>\n" .
5607                       "<td>" . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary"),
5608                                         -class => "list",
5609                                         -title => $pr->{'descr_long'}},
5610                                         $search_regexp
5611                                         ? esc_html_match_hl_chopped($pr->{'descr_long'},
5612                                                                     $pr->{'descr'}, $search_regexp)
5613                                         : esc_html($pr->{'descr'})) .
5614                       "</td>\n" .
5615                       "<td><i>" . chop_and_escape_str($pr->{'owner'}, 15) . "</i></td>\n";
5616                 print "<td class=\"". age_class($pr->{'age'}) . "\">" .
5617                       (defined $pr->{'age_string'} ? $pr->{'age_string'} : "No commits") . "</td>\n" .
5618                       "<td class=\"link\">" .
5619                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary")}, "summary")   . " | " .
5620                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"shortlog")}, "shortlog") . " | " .
5621                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"log")}, "log") . " | " .
5622                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"tree")}, "tree") .
5623                       ($pr->{'forks'} ? " | " . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"forks")}, "forks") : '') .
5624                       "</td>\n" .
5625                       "</tr>\n";
5626         }
5627 }
5628
5629 sub git_project_list_body {
5630         # actually uses global variable $project
5631         my ($projlist, $order, $from, $to, $extra, $no_header) = @_;
5632         my @projects = @$projlist;
5633
5634         my $check_forks = gitweb_check_feature('forks');
5635         my $show_ctags  = gitweb_check_feature('ctags');
5636         my $tagfilter = $show_ctags ? $input_params{'ctag'} : undef;
5637         $check_forks = undef
5638                 if ($tagfilter || $search_regexp);
5639
5640         # filtering out forks before filling info allows to do less work
5641         @projects = filter_forks_from_projects_list(\@projects)
5642                 if ($check_forks);
5643         # search_projects_list pre-fills required info
5644         @projects = search_projects_list(\@projects,
5645                                          'search_regexp' => $search_regexp,
5646                                          'tagfilter'  => $tagfilter)
5647                 if ($tagfilter || $search_regexp);
5648         # fill the rest
5649         @projects = fill_project_list_info(\@projects);
5650
5651         $order ||= $default_projects_order;
5652         $from = 0 unless defined $from;
5653         $to = $#projects if (!defined $to || $#projects < $to);
5654
5655         # short circuit
5656         if ($from > $to) {
5657                 print "<center>\n".
5658                       "<b>No such projects found</b><br />\n".
5659                       "Click ".$cgi->a({-href=>href(project=>undef)},"here")." to view all projects<br />\n".
5660                       "</center>\n<br />\n";
5661                 return;
5662         }
5663
5664         @projects = sort_projects_list(\@projects, $order);
5665
5666         if ($show_ctags) {
5667                 my $ctags = git_gather_all_ctags(\@projects);
5668                 my $cloud = git_populate_project_tagcloud($ctags);
5669                 print git_show_project_tagcloud($cloud, 64);
5670         }
5671
5672         print "<table class=\"project_list\">\n";
5673         unless ($no_header) {
5674                 print "<tr>\n";
5675                 if ($check_forks) {
5676                         print "<th></th>\n";
5677                 }
5678                 print_sort_th('project', $order, 'Project');
5679                 print_sort_th('descr', $order, 'Description');
5680                 print_sort_th('owner', $order, 'Owner');
5681                 print_sort_th('age', $order, 'Last Change');
5682                 print "<th></th>\n" . # for links
5683                       "</tr>\n";
5684         }
5685
5686         if ($projects_list_group_categories) {
5687                 # only display categories with projects in the $from-$to window
5688                 @projects = sort {$a->{'category'} cmp $b->{'category'}} @projects[$from..$to];
5689                 my %categories = build_projlist_by_category(\@projects, $from, $to);
5690                 foreach my $cat (sort keys %categories) {
5691                         unless ($cat eq "") {
5692                                 print "<tr>\n";
5693                                 if ($check_forks) {
5694                                         print "<td></td>\n";
5695                                 }
5696                                 print "<td class=\"category\" colspan=\"5\">".esc_html($cat)."</td>\n";
5697                                 print "</tr>\n";
5698                         }
5699
5700                         git_project_list_rows($categories{$cat}, undef, undef, $check_forks);
5701                 }
5702         } else {
5703                 git_project_list_rows(\@projects, $from, $to, $check_forks);
5704         }
5705
5706         if (defined $extra) {
5707                 print "<tr>\n";
5708                 if ($check_forks) {
5709                         print "<td></td>\n";
5710                 }
5711                 print "<td colspan=\"5\">$extra</td>\n" .
5712                       "</tr>\n";
5713         }
5714         print "</table>\n";
5715 }
5716
5717 sub git_log_body {
5718         # uses global variable $project
5719         my ($commitlist, $from, $to, $refs, $extra) = @_;
5720
5721         $from = 0 unless defined $from;
5722         $to = $#{$commitlist} if (!defined $to || $#{$commitlist} < $to);
5723
5724         for (my $i = 0; $i <= $to; $i++) {
5725                 my %co = %{$commitlist->[$i]};
5726                 next if !%co;
5727                 my $commit = $co{'id'};
5728                 my $ref = format_ref_marker($refs, $commit);
5729                 git_print_header_div('commit',
5730                                "<span class=\"age\">$co{'age_string'}</span>" .
5731                                esc_html($co{'title'}) . $ref,
5732                                $commit);
5733                 print "<div class=\"title_text\">\n" .
5734                       "<div class=\"log_link\">\n" .
5735                       $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") .
5736                       " | " .
5737                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") .
5738                       " | " .
5739                       $cgi->a({-href => href(action=>"tree", hash=>$commit, hash_base=>$commit)}, "tree") .
5740                       "<br/>\n" .
5741                       "</div>\n";
5742                       git_print_authorship(\%co, -tag => 'span');
5743                       print "<br/>\n</div>\n";
5744
5745                 print "<div class=\"log_body\">\n";
5746                 git_print_log($co{'comment'}, -final_empty_line=> 1);
5747                 print "</div>\n";
5748         }
5749         if ($extra) {
5750                 print "<div class=\"page_nav\">\n";
5751                 print "$extra\n";
5752                 print "</div>\n";
5753         }
5754 }
5755
5756 sub git_shortlog_body {
5757         # uses global variable $project
5758         my ($commitlist, $from, $to, $refs, $extra) = @_;
5759
5760         $from = 0 unless defined $from;
5761         $to = $#{$commitlist} if (!defined $to || $#{$commitlist} < $to);
5762
5763         print "<table class=\"shortlog\">\n";
5764         my $alternate = 1;
5765         for (my $i = $from; $i <= $to; $i++) {
5766                 my %co = %{$commitlist->[$i]};
5767                 my $commit = $co{'id'};
5768                 my $ref = format_ref_marker($refs, $commit);
5769                 if ($alternate) {
5770                         print "<tr class=\"dark\">\n";
5771                 } else {
5772                         print "<tr class=\"light\">\n";
5773                 }
5774                 $alternate ^= 1;
5775                 # git_summary() used print "<td><i>$co{'age_string'}</i></td>\n" .
5776                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
5777                       format_author_html('td', \%co, 10) . "<td>";
5778                 print format_subject_html($co{'title'}, $co{'title_short'},
5779                                           href(action=>"commit", hash=>$commit), $ref);
5780                 print "</td>\n" .
5781                       "<td class=\"link\">" .
5782                       $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") . " | " .
5783                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") . " | " .
5784                       $cgi->a({-href => href(action=>"tree", hash=>$commit, hash_base=>$commit)}, "tree");
5785                 my $snapshot_links = format_snapshot_links($commit);
5786                 if (defined $snapshot_links) {
5787                         print " | " . $snapshot_links;
5788                 }
5789                 print "</td>\n" .
5790                       "</tr>\n";
5791         }
5792         if (defined $extra) {
5793                 print "<tr>\n" .
5794                       "<td colspan=\"4\">$extra</td>\n" .
5795                       "</tr>\n";
5796         }
5797         print "</table>\n";
5798 }
5799
5800 sub git_history_body {
5801         # Warning: assumes constant type (blob or tree) during history
5802         my ($commitlist, $from, $to, $refs, $extra,
5803             $file_name, $file_hash, $ftype) = @_;
5804
5805         $from = 0 unless defined $from;
5806         $to = $#{$commitlist} unless (defined $to && $to <= $#{$commitlist});
5807
5808         print "<table class=\"history\">\n";
5809         my $alternate = 1;
5810         for (my $i = $from; $i <= $to; $i++) {
5811                 my %co = %{$commitlist->[$i]};
5812                 if (!%co) {
5813                         next;
5814                 }
5815                 my $commit = $co{'id'};
5816
5817                 my $ref = format_ref_marker($refs, $commit);
5818
5819                 if ($alternate) {
5820                         print "<tr class=\"dark\">\n";
5821                 } else {
5822                         print "<tr class=\"light\">\n";
5823                 }
5824                 $alternate ^= 1;
5825                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
5826         # shortlog:   format_author_html('td', \%co, 10)
5827                       format_author_html('td', \%co, 15, 3) . "<td>";
5828                 # originally git_history used chop_str($co{'title'}, 50)
5829                 print format_subject_html($co{'title'}, $co{'title_short'},
5830                                           href(action=>"commit", hash=>$commit), $ref);
5831                 print "</td>\n" .
5832                       "<td class=\"link\">" .
5833                       $cgi->a({-href => href(action=>$ftype, hash_base=>$commit, file_name=>$file_name)}, $ftype) . " | " .
5834                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff");
5835
5836                 if ($ftype eq 'blob') {
5837                         my $blob_current = $file_hash;
5838                         my $blob_parent  = git_get_hash_by_path($commit, $file_name);
5839                         if (defined $blob_current && defined $blob_parent &&
5840                                         $blob_current ne $blob_parent) {
5841                                 print " | " .
5842                                         $cgi->a({-href => href(action=>"blobdiff",
5843                                                                hash=>$blob_current, hash_parent=>$blob_parent,
5844                                                                hash_base=>$hash_base, hash_parent_base=>$commit,
5845                                                                file_name=>$file_name)},
5846                                                 "diff to current");
5847                         }
5848                 }
5849                 print "</td>\n" .
5850                       "</tr>\n";
5851         }
5852         if (defined $extra) {
5853                 print "<tr>\n" .
5854                       "<td colspan=\"4\">$extra</td>\n" .
5855                       "</tr>\n";
5856         }
5857         print "</table>\n";
5858 }
5859
5860 sub git_tags_body {
5861         # uses global variable $project
5862         my ($taglist, $from, $to, $extra) = @_;
5863         $from = 0 unless defined $from;
5864         $to = $#{$taglist} if (!defined $to || $#{$taglist} < $to);
5865
5866         print "<table class=\"tags\">\n";
5867         my $alternate = 1;
5868         for (my $i = $from; $i <= $to; $i++) {
5869                 my $entry = $taglist->[$i];
5870                 my %tag = %$entry;
5871                 my $comment = $tag{'subject'};
5872                 my $comment_short;
5873                 if (defined $comment) {
5874                         $comment_short = chop_str($comment, 30, 5);
5875                 }
5876                 if ($alternate) {
5877                         print "<tr class=\"dark\">\n";
5878                 } else {
5879                         print "<tr class=\"light\">\n";
5880                 }
5881                 $alternate ^= 1;
5882                 if (defined $tag{'age'}) {
5883                         print "<td><i>$tag{'age'}</i></td>\n";
5884                 } else {
5885                         print "<td></td>\n";
5886                 }
5887                 print "<td>" .
5888                       $cgi->a({-href => href(action=>$tag{'reftype'}, hash=>$tag{'refid'}),
5889                                -class => "list name"}, esc_html($tag{'name'})) .
5890                       "</td>\n" .
5891                       "<td>";
5892                 if (defined $comment) {
5893                         print format_subject_html($comment, $comment_short,
5894                                                   href(action=>"tag", hash=>$tag{'id'}));
5895                 }
5896                 print "</td>\n" .
5897                       "<td class=\"selflink\">";
5898                 if ($tag{'type'} eq "tag") {
5899                         print $cgi->a({-href => href(action=>"tag", hash=>$tag{'id'})}, "tag");
5900                 } else {
5901                         print "&nbsp;";
5902                 }
5903                 print "</td>\n" .
5904                       "<td class=\"link\">" . " | " .
5905                       $cgi->a({-href => href(action=>$tag{'reftype'}, hash=>$tag{'refid'})}, $tag{'reftype'});
5906                 if ($tag{'reftype'} eq "commit") {
5907                         print " | " . $cgi->a({-href => href(action=>"shortlog", hash=>$tag{'fullname'})}, "shortlog") .
5908                               " | " . $cgi->a({-href => href(action=>"log", hash=>$tag{'fullname'})}, "log");
5909                 } elsif ($tag{'reftype'} eq "blob") {
5910                         print " | " . $cgi->a({-href => href(action=>"blob_plain", hash=>$tag{'refid'})}, "raw");
5911                 }
5912                 print "</td>\n" .
5913                       "</tr>";
5914         }
5915         if (defined $extra) {
5916                 print "<tr>\n" .
5917                       "<td colspan=\"5\">$extra</td>\n" .
5918                       "</tr>\n";
5919         }
5920         print "</table>\n";
5921 }
5922
5923 sub git_heads_body {
5924         # uses global variable $project
5925         my ($headlist, $head_at, $from, $to, $extra) = @_;
5926         $from = 0 unless defined $from;
5927         $to = $#{$headlist} if (!defined $to || $#{$headlist} < $to);
5928
5929         print "<table class=\"heads\">\n";
5930         my $alternate = 1;
5931         for (my $i = $from; $i <= $to; $i++) {
5932                 my $entry = $headlist->[$i];
5933                 my %ref = %$entry;
5934                 my $curr = defined $head_at && $ref{'id'} eq $head_at;
5935                 if ($alternate) {
5936                         print "<tr class=\"dark\">\n";
5937                 } else {
5938                         print "<tr class=\"light\">\n";
5939                 }
5940                 $alternate ^= 1;
5941                 print "<td><i>$ref{'age'}</i></td>\n" .
5942                       ($curr ? "<td class=\"current_head\">" : "<td>") .
5943                       $cgi->a({-href => href(action=>"shortlog", hash=>$ref{'fullname'}),
5944                                -class => "list name"},esc_html($ref{'name'})) .
5945                       "</td>\n" .
5946                       "<td class=\"link\">" .
5947                       $cgi->a({-href => href(action=>"shortlog", hash=>$ref{'fullname'})}, "shortlog") . " | " .
5948                       $cgi->a({-href => href(action=>"log", hash=>$ref{'fullname'})}, "log") . " | " .
5949                       $cgi->a({-href => href(action=>"tree", hash=>$ref{'fullname'}, hash_base=>$ref{'fullname'})}, "tree") .
5950                       "</td>\n" .
5951                       "</tr>";
5952         }
5953         if (defined $extra) {
5954                 print "<tr>\n" .
5955                       "<td colspan=\"3\">$extra</td>\n" .
5956                       "</tr>\n";
5957         }
5958         print "</table>\n";
5959 }
5960
5961 # Display a single remote block
5962 sub git_remote_block {
5963         my ($remote, $rdata, $limit, $head) = @_;
5964
5965         my $heads = $rdata->{'heads'};
5966         my $fetch = $rdata->{'fetch'};
5967         my $push = $rdata->{'push'};
5968
5969         my $urls_table = "<table class=\"projects_list\">\n" ;
5970
5971         if (defined $fetch) {
5972                 if ($fetch eq $push) {
5973                         $urls_table .= format_repo_url("URL", $fetch);
5974                 } else {
5975                         $urls_table .= format_repo_url("Fetch URL", $fetch);
5976                         $urls_table .= format_repo_url("Push URL", $push) if defined $push;
5977                 }
5978         } elsif (defined $push) {
5979                 $urls_table .= format_repo_url("Push URL", $push);
5980         } else {
5981                 $urls_table .= format_repo_url("", "No remote URL");
5982         }
5983
5984         $urls_table .= "</table>\n";
5985
5986         my $dots;
5987         if (defined $limit && $limit < @$heads) {
5988                 $dots = $cgi->a({-href => href(action=>"remotes", hash=>$remote)}, "...");
5989         }
5990
5991         print $urls_table;
5992         git_heads_body($heads, $head, 0, $limit, $dots);
5993 }
5994
5995 # Display a list of remote names with the respective fetch and push URLs
5996 sub git_remotes_list {
5997         my ($remotedata, $limit) = @_;
5998         print "<table class=\"heads\">\n";
5999         my $alternate = 1;
6000         my @remotes = sort keys %$remotedata;
6001
6002         my $limited = $limit && $limit < @remotes;
6003
6004         $#remotes = $limit - 1 if $limited;
6005
6006         while (my $remote = shift @remotes) {
6007                 my $rdata = $remotedata->{$remote};
6008                 my $fetch = $rdata->{'fetch'};
6009                 my $push = $rdata->{'push'};
6010                 if ($alternate) {
6011                         print "<tr class=\"dark\">\n";
6012                 } else {
6013                         print "<tr class=\"light\">\n";
6014                 }
6015                 $alternate ^= 1;
6016                 print "<td>" .
6017                       $cgi->a({-href=> href(action=>'remotes', hash=>$remote),
6018                                -class=> "list name"},esc_html($remote)) .
6019                       "</td>";
6020                 print "<td class=\"link\">" .
6021                       (defined $fetch ? $cgi->a({-href=> $fetch}, "fetch") : "fetch") .
6022                       " | " .
6023                       (defined $push ? $cgi->a({-href=> $push}, "push") : "push") .
6024                       "</td>";
6025
6026                 print "</tr>\n";
6027         }
6028
6029         if ($limited) {
6030                 print "<tr>\n" .
6031                       "<td colspan=\"3\">" .
6032                       $cgi->a({-href => href(action=>"remotes")}, "...") .
6033                       "</td>\n" . "</tr>\n";
6034         }
6035
6036         print "</table>";
6037 }
6038
6039 # Display remote heads grouped by remote, unless there are too many
6040 # remotes, in which case we only display the remote names
6041 sub git_remotes_body {
6042         my ($remotedata, $limit, $head) = @_;
6043         if ($limit and $limit < keys %$remotedata) {
6044                 git_remotes_list($remotedata, $limit);
6045         } else {
6046                 fill_remote_heads($remotedata);
6047                 while (my ($remote, $rdata) = each %$remotedata) {
6048                         git_print_section({-class=>"remote", -id=>$remote},
6049                                 ["remotes", $remote, $remote], sub {
6050                                         git_remote_block($remote, $rdata, $limit, $head);
6051                                 });
6052                 }
6053         }
6054 }
6055
6056 sub git_search_message {
6057         my %co = @_;
6058
6059         my $greptype;
6060         if ($searchtype eq 'commit') {
6061                 $greptype = "--grep=";
6062         } elsif ($searchtype eq 'author') {
6063                 $greptype = "--author=";
6064         } elsif ($searchtype eq 'committer') {
6065                 $greptype = "--committer=";
6066         }
6067         $greptype .= $searchtext;
6068         my @commitlist = parse_commits($hash, 101, (100 * $page), undef,
6069                                        $greptype, '--regexp-ignore-case',
6070                                        $search_use_regexp ? '--extended-regexp' : '--fixed-strings');
6071
6072         my $paging_nav = '';
6073         if ($page > 0) {
6074                 $paging_nav .=
6075                         $cgi->a({-href => href(-replay=>1, page=>undef)},
6076                                 "first") .
6077                         " &sdot; " .
6078                         $cgi->a({-href => href(-replay=>1, page=>$page-1),
6079                                  -accesskey => "p", -title => "Alt-p"}, "prev");
6080         } else {
6081                 $paging_nav .= "first &sdot; prev";
6082         }
6083         my $next_link = '';
6084         if ($#commitlist >= 100) {
6085                 $next_link =
6086                         $cgi->a({-href => href(-replay=>1, page=>$page+1),
6087                                  -accesskey => "n", -title => "Alt-n"}, "next");
6088                 $paging_nav .= " &sdot; $next_link";
6089         } else {
6090                 $paging_nav .= " &sdot; next";
6091         }
6092
6093         git_header_html();
6094
6095         git_print_page_nav('','', $hash,$co{'tree'},$hash, $paging_nav);
6096         git_print_header_div('commit', esc_html($co{'title'}), $hash);
6097         if ($page == 0 && !@commitlist) {
6098                 print "<p>No match.</p>\n";
6099         } else {
6100                 git_search_grep_body(\@commitlist, 0, 99, $next_link);
6101         }
6102
6103         git_footer_html();
6104 }
6105
6106 sub git_search_changes {
6107         my %co = @_;
6108
6109         local $/ = "\n";
6110         open my $fd, '-|', git_cmd(), '--no-pager', 'log', @diff_opts,
6111                 '--pretty=format:%H', '--no-abbrev', '--raw', "-S$searchtext",
6112                 ($search_use_regexp ? '--pickaxe-regex' : ())
6113                         or die_error(500, "Open git-log failed");
6114
6115         git_header_html();
6116
6117         git_print_page_nav('','', $hash,$co{'tree'},$hash);
6118         git_print_header_div('commit', esc_html($co{'title'}), $hash);
6119
6120         print "<table class=\"pickaxe search\">\n";
6121         my $alternate = 1;
6122         undef %co;
6123         my @files;
6124         while (my $line = <$fd>) {
6125                 chomp $line;
6126                 next unless $line;
6127
6128                 my %set = parse_difftree_raw_line($line);
6129                 if (defined $set{'commit'}) {
6130                         # finish previous commit
6131                         if (%co) {
6132                                 print "</td>\n" .
6133                                       "<td class=\"link\">" .
6134                                       $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})},
6135                                               "commit") .
6136                                       " | " .
6137                                       $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'},
6138                                                              hash_base=>$co{'id'})},
6139                                               "tree") .
6140                                       "</td>\n" .
6141                                       "</tr>\n";
6142                         }
6143
6144                         if ($alternate) {
6145                                 print "<tr class=\"dark\">\n";
6146                         } else {
6147                                 print "<tr class=\"light\">\n";
6148                         }
6149                         $alternate ^= 1;
6150                         %co = parse_commit($set{'commit'});
6151                         my $author = chop_and_escape_str($co{'author_name'}, 15, 5);
6152                         print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
6153                               "<td><i>$author</i></td>\n" .
6154                               "<td>" .
6155                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}),
6156                                       -class => "list subject"},
6157                                       chop_and_escape_str($co{'title'}, 50) . "<br/>");
6158                 } elsif (defined $set{'to_id'}) {
6159                         next if ($set{'to_id'} =~ m/^0{40}$/);
6160
6161                         print $cgi->a({-href => href(action=>"blob", hash_base=>$co{'id'},
6162                                                      hash=>$set{'to_id'}, file_name=>$set{'to_file'}),
6163                                       -class => "list"},
6164                                       "<span class=\"match\">" . esc_path($set{'file'}) . "</span>") .
6165                               "<br/>\n";
6166                 }
6167         }
6168         close $fd;
6169
6170         # finish last commit (warning: repetition!)
6171         if (%co) {
6172                 print "</td>\n" .
6173                       "<td class=\"link\">" .
6174                       $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})},
6175                               "commit") .
6176                       " | " .
6177                       $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'},
6178                                              hash_base=>$co{'id'})},
6179                               "tree") .
6180                       "</td>\n" .
6181                       "</tr>\n";
6182         }
6183
6184         print "</table>\n";
6185
6186         git_footer_html();
6187 }
6188
6189 sub git_search_files {
6190         my %co = @_;
6191
6192         local $/ = "\n";
6193         open my $fd, "-|", git_cmd(), 'grep', '-n', '-z',
6194                 $search_use_regexp ? ('-E', '-i') : '-F',
6195                 $searchtext, $co{'tree'}
6196                         or die_error(500, "Open git-grep failed");
6197
6198         git_header_html();
6199
6200         git_print_page_nav('','', $hash,$co{'tree'},$hash);
6201         git_print_header_div('commit', esc_html($co{'title'}), $hash);
6202
6203         print "<table class=\"grep_search\">\n";
6204         my $alternate = 1;
6205         my $matches = 0;
6206         my $lastfile = '';
6207         my $file_href;
6208         while (my $line = <$fd>) {
6209                 chomp $line;
6210                 my ($file, $lno, $ltext, $binary);
6211                 last if ($matches++ > 1000);
6212                 if ($line =~ /^Binary file (.+) matches$/) {
6213                         $file = $1;
6214                         $binary = 1;
6215                 } else {
6216                         ($file, $lno, $ltext) = split(/\0/, $line, 3);
6217                         $file =~ s/^$co{'tree'}://;
6218                 }
6219                 if ($file ne $lastfile) {
6220                         $lastfile and print "</td></tr>\n";
6221                         if ($alternate++) {
6222                                 print "<tr class=\"dark\">\n";
6223                         } else {
6224                                 print "<tr class=\"light\">\n";
6225                         }
6226                         $file_href = href(action=>"blob", hash_base=>$co{'id'},
6227                                           file_name=>$file);
6228                         print "<td class=\"list\">".
6229                                 $cgi->a({-href => $file_href, -class => "list"}, esc_path($file));
6230                         print "</td><td>\n";
6231                         $lastfile = $file;
6232                 }
6233                 if ($binary) {
6234                         print "<div class=\"binary\">Binary file</div>\n";
6235                 } else {
6236                         $ltext = untabify($ltext);
6237                         if ($ltext =~ m/^(.*)($search_regexp)(.*)$/i) {
6238                                 $ltext = esc_html($1, -nbsp=>1);
6239                                 $ltext .= '<span class="match">';
6240                                 $ltext .= esc_html($2, -nbsp=>1);
6241                                 $ltext .= '</span>';
6242                                 $ltext .= esc_html($3, -nbsp=>1);
6243                         } else {
6244                                 $ltext = esc_html($ltext, -nbsp=>1);
6245                         }
6246                         print "<div class=\"pre\">" .
6247                                 $cgi->a({-href => $file_href.'#l'.$lno,
6248                                         -class => "linenr"}, sprintf('%4i', $lno)) .
6249                                 ' ' .  $ltext . "</div>\n";
6250                 }
6251         }
6252         if ($lastfile) {
6253                 print "</td></tr>\n";
6254                 if ($matches > 1000) {
6255                         print "<div class=\"diff nodifferences\">Too many matches, listing trimmed</div>\n";
6256                 }
6257         } else {
6258                 print "<div class=\"diff nodifferences\">No matches found</div>\n";
6259         }
6260         close $fd;
6261
6262         print "</table>\n";
6263
6264         git_footer_html();
6265 }
6266
6267 sub git_search_grep_body {
6268         my ($commitlist, $from, $to, $extra) = @_;
6269         $from = 0 unless defined $from;
6270         $to = $#{$commitlist} if (!defined $to || $#{$commitlist} < $to);
6271
6272         print "<table class=\"commit_search\">\n";
6273         my $alternate = 1;
6274         for (my $i = $from; $i <= $to; $i++) {
6275                 my %co = %{$commitlist->[$i]};
6276                 if (!%co) {
6277                         next;
6278                 }
6279                 my $commit = $co{'id'};
6280                 if ($alternate) {
6281                         print "<tr class=\"dark\">\n";
6282                 } else {
6283                         print "<tr class=\"light\">\n";
6284                 }
6285                 $alternate ^= 1;
6286                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
6287                       format_author_html('td', \%co, 15, 5) .
6288                       "<td>" .
6289                       $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}),
6290                                -class => "list subject"},
6291                               chop_and_escape_str($co{'title'}, 50) . "<br/>");
6292                 my $comment = $co{'comment'};
6293                 foreach my $line (@$comment) {
6294                         if ($line =~ m/^(.*?)($search_regexp)(.*)$/i) {
6295                                 my ($lead, $match, $trail) = ($1, $2, $3);
6296                                 $match = chop_str($match, 70, 5, 'center');
6297                                 my $contextlen = int((80 - length($match))/2);
6298                                 $contextlen = 30 if ($contextlen > 30);
6299                                 $lead  = chop_str($lead,  $contextlen, 10, 'left');
6300                                 $trail = chop_str($trail, $contextlen, 10, 'right');
6301
6302                                 $lead  = esc_html($lead);
6303                                 $match = esc_html($match);
6304                                 $trail = esc_html($trail);
6305
6306                                 print "$lead<span class=\"match\">$match</span>$trail<br />";
6307                         }
6308                 }
6309                 print "</td>\n" .
6310                       "<td class=\"link\">" .
6311                       $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})}, "commit") .
6312                       " | " .
6313                       $cgi->a({-href => href(action=>"commitdiff", hash=>$co{'id'})}, "commitdiff") .
6314                       " | " .
6315                       $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$co{'id'})}, "tree");
6316                 print "</td>\n" .
6317                       "</tr>\n";
6318         }
6319         if (defined $extra) {
6320                 print "<tr>\n" .
6321                       "<td colspan=\"3\">$extra</td>\n" .
6322                       "</tr>\n";
6323         }
6324         print "</table>\n";
6325 }
6326
6327 ## ======================================================================
6328 ## ======================================================================
6329 ## actions
6330
6331 sub git_project_list {
6332         my $order = $input_params{'order'};
6333         if (defined $order && $order !~ m/none|project|descr|owner|age/) {
6334                 die_error(400, "Unknown order parameter");
6335         }
6336
6337         my @list = git_get_projects_list($project_filter, $strict_export);
6338         if (!@list) {
6339                 die_error(404, "No projects found");
6340         }
6341
6342         git_header_html();
6343         if (defined $home_text && -f $home_text) {
6344                 print "<div class=\"index_include\">\n";
6345                 insert_file($home_text);
6346                 print "</div>\n";
6347         }
6348
6349         git_project_search_form($searchtext, $search_use_regexp);
6350         git_project_list_body(\@list, $order);
6351         git_footer_html();
6352 }
6353
6354 sub git_forks {
6355         my $order = $input_params{'order'};
6356         if (defined $order && $order !~ m/none|project|descr|owner|age/) {
6357                 die_error(400, "Unknown order parameter");
6358         }
6359
6360         my $filter = $project;
6361         $filter =~ s/\.git$//;
6362         my @list = git_get_projects_list($filter);
6363         if (!@list) {
6364                 die_error(404, "No forks found");
6365         }
6366
6367         git_header_html();
6368         git_print_page_nav('','');
6369         git_print_header_div('summary', "$project forks");
6370         git_project_list_body(\@list, $order);
6371         git_footer_html();
6372 }
6373
6374 sub git_project_index {
6375         my @projects = git_get_projects_list($project_filter, $strict_export);
6376         if (!@projects) {
6377                 die_error(404, "No projects found");
6378         }
6379
6380         print $cgi->header(
6381                 -type => 'text/plain',
6382                 -charset => 'utf-8',
6383                 -content_disposition => 'inline; filename="index.aux"');
6384
6385         foreach my $pr (@projects) {
6386                 if (!exists $pr->{'owner'}) {
6387                         $pr->{'owner'} = git_get_project_owner("$pr->{'path'}");
6388                 }
6389
6390                 my ($path, $owner) = ($pr->{'path'}, $pr->{'owner'});
6391                 # quote as in CGI::Util::encode, but keep the slash, and use '+' for ' '
6392                 $path  =~ s/([^a-zA-Z0-9_.\-\/ ])/sprintf("%%%02X", ord($1))/eg;
6393                 $owner =~ s/([^a-zA-Z0-9_.\-\/ ])/sprintf("%%%02X", ord($1))/eg;
6394                 $path  =~ s/ /\+/g;
6395                 $owner =~ s/ /\+/g;
6396
6397                 print "$path $owner\n";
6398         }
6399 }
6400
6401 sub git_summary {
6402         my $descr = git_get_project_description($project) || "none";
6403         my %co = parse_commit("HEAD");
6404         my %cd = %co ? parse_date($co{'committer_epoch'}, $co{'committer_tz'}) : ();
6405         my $head = $co{'id'};
6406         my $remote_heads = gitweb_check_feature('remote_heads');
6407
6408         my $owner = git_get_project_owner($project);
6409
6410         my $refs = git_get_references();
6411         # These get_*_list functions return one more to allow us to see if
6412         # there are more ...
6413         my @taglist  = git_get_tags_list(16);
6414         my @headlist = git_get_heads_list(16);
6415         my %remotedata = $remote_heads ? git_get_remotes_list() : ();
6416         my @forklist;
6417         my $check_forks = gitweb_check_feature('forks');
6418
6419         if ($check_forks) {
6420                 # find forks of a project
6421                 my $filter = $project;
6422                 $filter =~ s/\.git$//;
6423                 @forklist = git_get_projects_list($filter);
6424                 # filter out forks of forks
6425                 @forklist = filter_forks_from_projects_list(\@forklist)
6426                         if (@forklist);
6427         }
6428
6429         git_header_html();
6430         git_print_page_nav('summary','', $head);
6431
6432         print "<div class=\"title\">&nbsp;</div>\n";
6433         print "<table class=\"projects_list\">\n" .
6434               "<tr id=\"metadata_desc\"><td>description</td><td>" . esc_html($descr) . "</td></tr>\n" .
6435               "<tr id=\"metadata_owner\"><td>owner</td><td>" . esc_html($owner) . "</td></tr>\n";
6436         if (defined $cd{'rfc2822'}) {
6437                 print "<tr id=\"metadata_lchange\"><td>last change</td>" .
6438                       "<td>".format_timestamp_html(\%cd)."</td></tr>\n";
6439         }
6440
6441         # use per project git URL list in $projectroot/$project/cloneurl
6442         # or make project git URL from git base URL and project name
6443         my $url_tag = "URL";
6444         my @url_list = git_get_project_url_list($project);
6445         @url_list = map { "$_/$project" } @git_base_url_list unless @url_list;
6446         foreach my $git_url (@url_list) {
6447                 next unless $git_url;
6448                 print format_repo_url($url_tag, $git_url);
6449                 $url_tag = "";
6450         }
6451
6452         # Tag cloud
6453         my $show_ctags = gitweb_check_feature('ctags');
6454         if ($show_ctags) {
6455                 my $ctags = git_get_project_ctags($project);
6456                 if (%$ctags) {
6457                         # without ability to add tags, don't show if there are none
6458                         my $cloud = git_populate_project_tagcloud($ctags);
6459                         print "<tr id=\"metadata_ctags\">" .
6460                               "<td>content tags</td>" .
6461                               "<td>".git_show_project_tagcloud($cloud, 48)."</td>" .
6462                               "</tr>\n";
6463                 }
6464         }
6465
6466         print "</table>\n";
6467
6468         # If XSS prevention is on, we don't include README.html.
6469         # TODO: Allow a readme in some safe format.
6470         if (!$prevent_xss && -s "$projectroot/$project/README.html") {
6471                 print "<div class=\"title\">readme</div>\n" .
6472                       "<div class=\"readme\">\n";
6473                 insert_file("$projectroot/$project/README.html");
6474                 print "\n</div>\n"; # class="readme"
6475         }
6476
6477         # we need to request one more than 16 (0..15) to check if
6478         # those 16 are all
6479         my @commitlist = $head ? parse_commits($head, 17) : ();
6480         if (@commitlist) {
6481                 git_print_header_div('shortlog');
6482                 git_shortlog_body(\@commitlist, 0, 15, $refs,
6483                                   $#commitlist <=  15 ? undef :
6484                                   $cgi->a({-href => href(action=>"shortlog")}, "..."));
6485         }
6486
6487         if (@taglist) {
6488                 git_print_header_div('tags');
6489                 git_tags_body(\@taglist, 0, 15,
6490                               $#taglist <=  15 ? undef :
6491                               $cgi->a({-href => href(action=>"tags")}, "..."));
6492         }
6493
6494         if (@headlist) {
6495                 git_print_header_div('heads');
6496                 git_heads_body(\@headlist, $head, 0, 15,
6497                                $#headlist <= 15 ? undef :
6498                                $cgi->a({-href => href(action=>"heads")}, "..."));
6499         }
6500
6501         if (%remotedata) {
6502                 git_print_header_div('remotes');
6503                 git_remotes_body(\%remotedata, 15, $head);
6504         }
6505
6506         if (@forklist) {
6507                 git_print_header_div('forks');
6508                 git_project_list_body(\@forklist, 'age', 0, 15,
6509                                       $#forklist <= 15 ? undef :
6510                                       $cgi->a({-href => href(action=>"forks")}, "..."),
6511                                       'no_header');
6512         }
6513
6514         git_footer_html();
6515 }
6516
6517 sub git_tag {
6518         my %tag = parse_tag($hash);
6519
6520         if (! %tag) {
6521                 die_error(404, "Unknown tag object");
6522         }
6523
6524         my $head = git_get_head_hash($project);
6525         git_header_html();
6526         git_print_page_nav('','', $head,undef,$head);
6527         git_print_header_div('commit', esc_html($tag{'name'}), $hash);
6528         print "<div class=\"title_text\">\n" .
6529               "<table class=\"object_header\">\n" .
6530               "<tr>\n" .
6531               "<td>object</td>\n" .
6532               "<td>" . $cgi->a({-class => "list", -href => href(action=>$tag{'type'}, hash=>$tag{'object'})},
6533                                $tag{'object'}) . "</td>\n" .
6534               "<td class=\"link\">" . $cgi->a({-href => href(action=>$tag{'type'}, hash=>$tag{'object'})},
6535                                               $tag{'type'}) . "</td>\n" .
6536               "</tr>\n";
6537         if (defined($tag{'author'})) {
6538                 git_print_authorship_rows(\%tag, 'author');
6539         }
6540         print "</table>\n\n" .
6541               "</div>\n";
6542         print "<div class=\"page_body\">";
6543         my $comment = $tag{'comment'};
6544         foreach my $line (@$comment) {
6545                 chomp $line;
6546                 print esc_html($line, -nbsp=>1) . "<br/>\n";
6547         }
6548         print "</div>\n";
6549         git_footer_html();
6550 }
6551
6552 sub git_blame_common {
6553         my $format = shift || 'porcelain';
6554         if ($format eq 'porcelain' && $input_params{'javascript'}) {
6555                 $format = 'incremental';
6556                 $action = 'blame_incremental'; # for page title etc
6557         }
6558
6559         # permissions
6560         gitweb_check_feature('blame')
6561                 or die_error(403, "Blame view not allowed");
6562
6563         # error checking
6564         die_error(400, "No file name given") unless $file_name;
6565         $hash_base ||= git_get_head_hash($project);
6566         die_error(404, "Couldn't find base commit") unless $hash_base;
6567         my %co = parse_commit($hash_base)
6568                 or die_error(404, "Commit not found");
6569         my $ftype = "blob";
6570         if (!defined $hash) {
6571                 $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
6572                         or die_error(404, "Error looking up file");
6573         } else {
6574                 $ftype = git_get_type($hash);
6575                 if ($ftype !~ "blob") {
6576                         die_error(400, "Object is not a blob");
6577                 }
6578         }
6579
6580         my $fd;
6581         if ($format eq 'incremental') {
6582                 # get file contents (as base)
6583                 open $fd, "-|", git_cmd(), 'cat-file', 'blob', $hash
6584                         or die_error(500, "Open git-cat-file failed");
6585         } elsif ($format eq 'data') {
6586                 # run git-blame --incremental
6587                 open $fd, "-|", git_cmd(), "blame", "--incremental",
6588                         $hash_base, "--", $file_name
6589                         or die_error(500, "Open git-blame --incremental failed");
6590         } else {
6591                 # run git-blame --porcelain
6592                 open $fd, "-|", git_cmd(), "blame", '-p',
6593                         $hash_base, '--', $file_name
6594                         or die_error(500, "Open git-blame --porcelain failed");
6595         }
6596
6597         # incremental blame data returns early
6598         if ($format eq 'data') {
6599                 print $cgi->header(
6600                         -type=>"text/plain", -charset => "utf-8",
6601                         -status=> "200 OK");
6602                 local $| = 1; # output autoflush
6603                 while (my $line = <$fd>) {
6604                         print to_utf8($line);
6605                 }
6606                 close $fd
6607                         or print "ERROR $!\n";
6608
6609                 print 'END';
6610                 if (defined $t0 && gitweb_check_feature('timed')) {
6611                         print ' '.
6612                               tv_interval($t0, [ gettimeofday() ]).
6613                               ' '.$number_of_git_cmds;
6614                 }
6615                 print "\n";
6616
6617                 return;
6618         }
6619
6620         # page header
6621         git_header_html();
6622         my $formats_nav =
6623                 $cgi->a({-href => href(action=>"blob", -replay=>1)},
6624                         "blob") .
6625                 " | ";
6626         if ($format eq 'incremental') {
6627                 $formats_nav .=
6628                         $cgi->a({-href => href(action=>"blame", javascript=>0, -replay=>1)},
6629                                 "blame") . " (non-incremental)";
6630         } else {
6631                 $formats_nav .=
6632                         $cgi->a({-href => href(action=>"blame_incremental", -replay=>1)},
6633                                 "blame") . " (incremental)";
6634         }
6635         $formats_nav .=
6636                 " | " .
6637                 $cgi->a({-href => href(action=>"history", -replay=>1)},
6638                         "history") .
6639                 " | " .
6640                 $cgi->a({-href => href(action=>$action, file_name=>$file_name)},
6641                         "HEAD");
6642         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
6643         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
6644         git_print_page_path($file_name, $ftype, $hash_base);
6645
6646         # page body
6647         if ($format eq 'incremental') {
6648                 print "<noscript>\n<div class=\"error\"><center><b>\n".
6649                       "This page requires JavaScript to run.\n Use ".
6650                       $cgi->a({-href => href(action=>'blame',javascript=>0,-replay=>1)},
6651                               'this page').
6652                       " instead.\n".
6653                       "</b></center></div>\n</noscript>\n";
6654
6655                 print qq!<div id="progress_bar" style="width: 100%; background-color: yellow"></div>\n!;
6656         }
6657
6658         print qq!<div class="page_body">\n!;
6659         print qq!<div id="progress_info">... / ...</div>\n!
6660                 if ($format eq 'incremental');
6661         print qq!<table id="blame_table" class="blame" width="100%">\n!.
6662               #qq!<col width="5.5em" /><col width="2.5em" /><col width="*" />\n!.
6663               qq!<thead>\n!.
6664               qq!<tr><th>Commit</th><th>Line</th><th>Data</th></tr>\n!.
6665               qq!</thead>\n!.
6666               qq!<tbody>\n!;
6667
6668         my @rev_color = qw(light dark);
6669         my $num_colors = scalar(@rev_color);
6670         my $current_color = 0;
6671
6672         if ($format eq 'incremental') {
6673                 my $color_class = $rev_color[$current_color];
6674
6675                 #contents of a file
6676                 my $linenr = 0;
6677         LINE:
6678                 while (my $line = <$fd>) {
6679                         chomp $line;
6680                         $linenr++;
6681
6682                         print qq!<tr id="l$linenr" class="$color_class">!.
6683                               qq!<td class="sha1"><a href=""> </a></td>!.
6684                               qq!<td class="linenr">!.
6685                               qq!<a class="linenr" href="">$linenr</a></td>!;
6686                         print qq!<td class="pre">! . esc_html($line) . "</td>\n";
6687                         print qq!</tr>\n!;
6688                 }
6689
6690         } else { # porcelain, i.e. ordinary blame
6691                 my %metainfo = (); # saves information about commits
6692
6693                 # blame data
6694         LINE:
6695                 while (my $line = <$fd>) {
6696                         chomp $line;
6697                         # the header: <SHA-1> <src lineno> <dst lineno> [<lines in group>]
6698                         # no <lines in group> for subsequent lines in group of lines
6699                         my ($full_rev, $orig_lineno, $lineno, $group_size) =
6700                            ($line =~ /^([0-9a-f]{40}) (\d+) (\d+)(?: (\d+))?$/);
6701                         if (!exists $metainfo{$full_rev}) {
6702                                 $metainfo{$full_rev} = { 'nprevious' => 0 };
6703                         }
6704                         my $meta = $metainfo{$full_rev};
6705                         my $data;
6706                         while ($data = <$fd>) {
6707                                 chomp $data;
6708                                 last if ($data =~ s/^\t//); # contents of line
6709                                 if ($data =~ /^(\S+)(?: (.*))?$/) {
6710                                         $meta->{$1} = $2 unless exists $meta->{$1};
6711                                 }
6712                                 if ($data =~ /^previous /) {
6713                                         $meta->{'nprevious'}++;
6714                                 }
6715                         }
6716                         my $short_rev = substr($full_rev, 0, 8);
6717                         my $author = $meta->{'author'};
6718                         my %date =
6719                                 parse_date($meta->{'author-time'}, $meta->{'author-tz'});
6720                         my $date = $date{'iso-tz'};
6721                         if ($group_size) {
6722                                 $current_color = ($current_color + 1) % $num_colors;
6723                         }
6724                         my $tr_class = $rev_color[$current_color];
6725                         $tr_class .= ' boundary' if (exists $meta->{'boundary'});
6726                         $tr_class .= ' no-previous' if ($meta->{'nprevious'} == 0);
6727                         $tr_class .= ' multiple-previous' if ($meta->{'nprevious'} > 1);
6728                         print "<tr id=\"l$lineno\" class=\"$tr_class\">\n";
6729                         if ($group_size) {
6730                                 print "<td class=\"sha1\"";
6731                                 print " title=\"". esc_html($author) . ", $date\"";
6732                                 print " rowspan=\"$group_size\"" if ($group_size > 1);
6733                                 print ">";
6734                                 print $cgi->a({-href => href(action=>"commit",
6735                                                              hash=>$full_rev,
6736                                                              file_name=>$file_name)},
6737                                               esc_html($short_rev));
6738                                 if ($group_size >= 2) {
6739                                         my @author_initials = ($author =~ /\b([[:upper:]])\B/g);
6740                                         if (@author_initials) {
6741                                                 print "<br />" .
6742                                                       esc_html(join('', @author_initials));
6743                                                 #           or join('.', ...)
6744                                         }
6745                                 }
6746                                 print "</td>\n";
6747                         }
6748                         # 'previous' <sha1 of parent commit> <filename at commit>
6749                         if (exists $meta->{'previous'} &&
6750                             $meta->{'previous'} =~ /^([a-fA-F0-9]{40}) (.*)$/) {
6751                                 $meta->{'parent'} = $1;
6752                                 $meta->{'file_parent'} = unquote($2);
6753                         }
6754                         my $linenr_commit =
6755                                 exists($meta->{'parent'}) ?
6756                                 $meta->{'parent'} : $full_rev;
6757                         my $linenr_filename =
6758                                 exists($meta->{'file_parent'}) ?
6759                                 $meta->{'file_parent'} : unquote($meta->{'filename'});
6760                         my $blamed = href(action => 'blame',
6761                                           file_name => $linenr_filename,
6762                                           hash_base => $linenr_commit);
6763                         print "<td class=\"linenr\">";
6764                         print $cgi->a({ -href => "$blamed#l$orig_lineno",
6765                                         -class => "linenr" },
6766                                       esc_html($lineno));
6767                         print "</td>";
6768                         print "<td class=\"pre\">" . esc_html($data) . "</td>\n";
6769                         print "</tr>\n";
6770                 } # end while
6771
6772         }
6773
6774         # footer
6775         print "</tbody>\n".
6776               "</table>\n"; # class="blame"
6777         print "</div>\n";   # class="blame_body"
6778         close $fd
6779                 or print "Reading blob failed\n";
6780
6781         git_footer_html();
6782 }
6783
6784 sub git_blame {
6785         git_blame_common();
6786 }
6787
6788 sub git_blame_incremental {
6789         git_blame_common('incremental');
6790 }
6791
6792 sub git_blame_data {
6793         git_blame_common('data');
6794 }
6795
6796 sub git_tags {
6797         my $head = git_get_head_hash($project);
6798         git_header_html();
6799         git_print_page_nav('','', $head,undef,$head,format_ref_views('tags'));
6800         git_print_header_div('summary', $project);
6801
6802         my @tagslist = git_get_tags_list();
6803         if (@tagslist) {
6804                 git_tags_body(\@tagslist);
6805         }
6806         git_footer_html();
6807 }
6808
6809 sub git_heads {
6810         my $head = git_get_head_hash($project);
6811         git_header_html();
6812         git_print_page_nav('','', $head,undef,$head,format_ref_views('heads'));
6813         git_print_header_div('summary', $project);
6814
6815         my @headslist = git_get_heads_list();
6816         if (@headslist) {
6817                 git_heads_body(\@headslist, $head);
6818         }
6819         git_footer_html();
6820 }
6821
6822 # used both for single remote view and for list of all the remotes
6823 sub git_remotes {
6824         gitweb_check_feature('remote_heads')
6825                 or die_error(403, "Remote heads view is disabled");
6826
6827         my $head = git_get_head_hash($project);
6828         my $remote = $input_params{'hash'};
6829
6830         my $remotedata = git_get_remotes_list($remote);
6831         die_error(500, "Unable to get remote information") unless defined $remotedata;
6832
6833         unless (%$remotedata) {
6834                 die_error(404, defined $remote ?
6835                         "Remote $remote not found" :
6836                         "No remotes found");
6837         }
6838
6839         git_header_html(undef, undef, -action_extra => $remote);
6840         git_print_page_nav('', '',  $head, undef, $head,
6841                 format_ref_views($remote ? '' : 'remotes'));
6842
6843         fill_remote_heads($remotedata);
6844         if (defined $remote) {
6845                 git_print_header_div('remotes', "$remote remote for $project");
6846                 git_remote_block($remote, $remotedata->{$remote}, undef, $head);
6847         } else {
6848                 git_print_header_div('summary', "$project remotes");
6849                 git_remotes_body($remotedata, undef, $head);
6850         }
6851
6852         git_footer_html();
6853 }
6854
6855 sub git_blob_plain {
6856         my $type = shift;
6857         my $expires;
6858
6859         if (!defined $hash) {
6860                 if (defined $file_name) {
6861                         my $base = $hash_base || git_get_head_hash($project);
6862                         $hash = git_get_hash_by_path($base, $file_name, "blob")
6863                                 or die_error(404, "Cannot find file");
6864                 } else {
6865                         die_error(400, "No file name defined");
6866                 }
6867         } elsif ($hash =~ m/^[0-9a-fA-F]{40}$/) {
6868                 # blobs defined by non-textual hash id's can be cached
6869                 $expires = "+1d";
6870         }
6871
6872         open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
6873                 or die_error(500, "Open git-cat-file blob '$hash' failed");
6874
6875         # content-type (can include charset)
6876         $type = blob_contenttype($fd, $file_name, $type);
6877
6878         # "save as" filename, even when no $file_name is given
6879         my $save_as = "$hash";
6880         if (defined $file_name) {
6881                 $save_as = $file_name;
6882         } elsif ($type =~ m/^text\//) {
6883                 $save_as .= '.txt';
6884         }
6885
6886         # With XSS prevention on, blobs of all types except a few known safe
6887         # ones are served with "Content-Disposition: attachment" to make sure
6888         # they don't run in our security domain.  For certain image types,
6889         # blob view writes an <img> tag referring to blob_plain view, and we
6890         # want to be sure not to break that by serving the image as an
6891         # attachment (though Firefox 3 doesn't seem to care).
6892         my $sandbox = $prevent_xss &&
6893                 $type !~ m!^(?:text/[a-z]+|image/(?:gif|png|jpeg))(?:[ ;]|$)!;
6894
6895         # serve text/* as text/plain
6896         if ($prevent_xss &&
6897             ($type =~ m!^text/[a-z]+\b(.*)$! ||
6898              ($type =~ m!^[a-z]+/[a-z]\+xml\b(.*)$! && -T $fd))) {
6899                 my $rest = $1;
6900                 $rest = defined $rest ? $rest : '';
6901                 $type = "text/plain$rest";
6902         }
6903
6904         print $cgi->header(
6905                 -type => $type,
6906                 -expires => $expires,
6907                 -content_disposition =>
6908                         ($sandbox ? 'attachment' : 'inline')
6909                         . '; filename="' . $save_as . '"');
6910         local $/ = undef;
6911         binmode STDOUT, ':raw';
6912         print <$fd>;
6913         binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
6914         close $fd;
6915 }
6916
6917 sub git_blob {
6918         my $expires;
6919
6920         if (!defined $hash) {
6921                 if (defined $file_name) {
6922                         my $base = $hash_base || git_get_head_hash($project);
6923                         $hash = git_get_hash_by_path($base, $file_name, "blob")
6924                                 or die_error(404, "Cannot find file");
6925                 } else {
6926                         die_error(400, "No file name defined");
6927                 }
6928         } elsif ($hash =~ m/^[0-9a-fA-F]{40}$/) {
6929                 # blobs defined by non-textual hash id's can be cached
6930                 $expires = "+1d";
6931         }
6932
6933         my $have_blame = gitweb_check_feature('blame');
6934         open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
6935                 or die_error(500, "Couldn't cat $file_name, $hash");
6936         my $mimetype = blob_mimetype($fd, $file_name);
6937         # use 'blob_plain' (aka 'raw') view for files that cannot be displayed
6938         if ($mimetype !~ m!^(?:text/|image/(?:gif|png|jpeg)$)! && -B $fd) {
6939                 close $fd;
6940                 return git_blob_plain($mimetype);
6941         }
6942         # we can have blame only for text/* mimetype
6943         $have_blame &&= ($mimetype =~ m!^text/!);
6944
6945         my $highlight = gitweb_check_feature('highlight');
6946         my $syntax = guess_file_syntax($highlight, $mimetype, $file_name);
6947         $fd = run_highlighter($fd, $highlight, $syntax)
6948                 if $syntax;
6949
6950         git_header_html(undef, $expires);
6951         my $formats_nav = '';
6952         if (defined $hash_base && (my %co = parse_commit($hash_base))) {
6953                 if (defined $file_name) {
6954                         if ($have_blame) {
6955                                 $formats_nav .=
6956                                         $cgi->a({-href => href(action=>"blame", -replay=>1)},
6957                                                 "blame") .
6958                                         " | ";
6959                         }
6960                         $formats_nav .=
6961                                 $cgi->a({-href => href(action=>"history", -replay=>1)},
6962                                         "history") .
6963                                 " | " .
6964                                 $cgi->a({-href => href(action=>"blob_plain", -replay=>1)},
6965                                         "raw") .
6966                                 " | " .
6967                                 $cgi->a({-href => href(action=>"blob",
6968                                                        hash_base=>"HEAD", file_name=>$file_name)},
6969                                         "HEAD");
6970                 } else {
6971                         $formats_nav .=
6972                                 $cgi->a({-href => href(action=>"blob_plain", -replay=>1)},
6973                                         "raw");
6974                 }
6975                 git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
6976                 git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
6977         } else {
6978                 print "<div class=\"page_nav\">\n" .
6979                       "<br/><br/></div>\n" .
6980                       "<div class=\"title\">".esc_html($hash)."</div>\n";
6981         }
6982         git_print_page_path($file_name, "blob", $hash_base);
6983         print "<div class=\"page_body\">\n";
6984         if ($mimetype =~ m!^image/!) {
6985                 print qq!<img type="!.esc_attr($mimetype).qq!"!;
6986                 if ($file_name) {
6987                         print qq! alt="!.esc_attr($file_name).qq!" title="!.esc_attr($file_name).qq!"!;
6988                 }
6989                 print qq! src="! .
6990                       href(action=>"blob_plain", hash=>$hash,
6991                            hash_base=>$hash_base, file_name=>$file_name) .
6992                       qq!" />\n!;
6993         } else {
6994                 my $nr;
6995                 while (my $line = <$fd>) {
6996                         chomp $line;
6997                         $nr++;
6998                         $line = untabify($line);
6999                         printf qq!<div class="pre"><a id="l%i" href="%s#l%i" class="linenr">%4i</a> %s</div>\n!,
7000                                $nr, esc_attr(href(-replay => 1)), $nr, $nr,
7001                                $syntax ? sanitize($line) : esc_html($line, -nbsp=>1);
7002                 }
7003         }
7004         close $fd
7005                 or print "Reading blob failed.\n";
7006         print "</div>";
7007         git_footer_html();
7008 }
7009
7010 sub git_tree {
7011         if (!defined $hash_base) {
7012                 $hash_base = "HEAD";
7013         }
7014         if (!defined $hash) {
7015                 if (defined $file_name) {
7016                         $hash = git_get_hash_by_path($hash_base, $file_name, "tree");
7017                 } else {
7018                         $hash = $hash_base;
7019                 }
7020         }
7021         die_error(404, "No such tree") unless defined($hash);
7022
7023         my $show_sizes = gitweb_check_feature('show-sizes');
7024         my $have_blame = gitweb_check_feature('blame');
7025
7026         my @entries = ();
7027         {
7028                 local $/ = "\0";
7029                 open my $fd, "-|", git_cmd(), "ls-tree", '-z',
7030                         ($show_sizes ? '-l' : ()), @extra_options, $hash
7031                         or die_error(500, "Open git-ls-tree failed");
7032                 @entries = map { chomp; $_ } <$fd>;
7033                 close $fd
7034                         or die_error(404, "Reading tree failed");
7035         }
7036
7037         my $refs = git_get_references();
7038         my $ref = format_ref_marker($refs, $hash_base);
7039         git_header_html();
7040         my $basedir = '';
7041         if (defined $hash_base && (my %co = parse_commit($hash_base))) {
7042                 my @views_nav = ();
7043                 if (defined $file_name) {
7044                         push @views_nav,
7045                                 $cgi->a({-href => href(action=>"history", -replay=>1)},
7046                                         "history"),
7047                                 $cgi->a({-href => href(action=>"tree",
7048                                                        hash_base=>"HEAD", file_name=>$file_name)},
7049                                         "HEAD"),
7050                 }
7051                 my $snapshot_links = format_snapshot_links($hash);
7052                 if (defined $snapshot_links) {
7053                         # FIXME: Should be available when we have no hash base as well.
7054                         push @views_nav, $snapshot_links;
7055                 }
7056                 git_print_page_nav('tree','', $hash_base, undef, undef,
7057                                    join(' | ', @views_nav));
7058                 git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash_base);
7059         } else {
7060                 undef $hash_base;
7061                 print "<div class=\"page_nav\">\n";
7062                 print "<br/><br/></div>\n";
7063                 print "<div class=\"title\">".esc_html($hash)."</div>\n";
7064         }
7065         if (defined $file_name) {
7066                 $basedir = $file_name;
7067                 if ($basedir ne '' && substr($basedir, -1) ne '/') {
7068                         $basedir .= '/';
7069                 }
7070                 git_print_page_path($file_name, 'tree', $hash_base);
7071         }
7072         print "<div class=\"page_body\">\n";
7073         print "<table class=\"tree\">\n";
7074         my $alternate = 1;
7075         # '..' (top directory) link if possible
7076         if (defined $hash_base &&
7077             defined $file_name && $file_name =~ m![^/]+$!) {
7078                 if ($alternate) {
7079                         print "<tr class=\"dark\">\n";
7080                 } else {
7081                         print "<tr class=\"light\">\n";
7082                 }
7083                 $alternate ^= 1;
7084
7085                 my $up = $file_name;
7086                 $up =~ s!/?[^/]+$!!;
7087                 undef $up unless $up;
7088                 # based on git_print_tree_entry
7089                 print '<td class="mode">' . mode_str('040000') . "</td>\n";
7090                 print '<td class="size">&nbsp;</td>'."\n" if $show_sizes;
7091                 print '<td class="list">';
7092                 print $cgi->a({-href => href(action=>"tree",
7093                                              hash_base=>$hash_base,
7094                                              file_name=>$up)},
7095                               "..");
7096                 print "</td>\n";
7097                 print "<td class=\"link\"></td>\n";
7098
7099                 print "</tr>\n";
7100         }
7101         foreach my $line (@entries) {
7102                 my %t = parse_ls_tree_line($line, -z => 1, -l => $show_sizes);
7103
7104                 if ($alternate) {
7105                         print "<tr class=\"dark\">\n";
7106                 } else {
7107                         print "<tr class=\"light\">\n";
7108                 }
7109                 $alternate ^= 1;
7110
7111                 git_print_tree_entry(\%t, $basedir, $hash_base, $have_blame);
7112
7113                 print "</tr>\n";
7114         }
7115         print "</table>\n" .
7116               "</div>";
7117         git_footer_html();
7118 }
7119
7120 sub snapshot_name {
7121         my ($project, $hash) = @_;
7122
7123         # path/to/project.git  -> project
7124         # path/to/project/.git -> project
7125         my $name = to_utf8($project);
7126         $name =~ s,([^/])/*\.git$,$1,;
7127         $name = basename($name);
7128         # sanitize name
7129         $name =~ s/[[:cntrl:]]/?/g;
7130
7131         my $ver = $hash;
7132         if ($hash =~ /^[0-9a-fA-F]+$/) {
7133                 # shorten SHA-1 hash
7134                 my $full_hash = git_get_full_hash($project, $hash);
7135                 if ($full_hash =~ /^$hash/ && length($hash) > 7) {
7136                         $ver = git_get_short_hash($project, $hash);
7137                 }
7138         } elsif ($hash =~ m!^refs/tags/(.*)$!) {
7139                 # tags don't need shortened SHA-1 hash
7140                 $ver = $1;
7141         } else {
7142                 # branches and other need shortened SHA-1 hash
7143                 if ($hash =~ m!^refs/(?:heads|remotes)/(.*)$!) {
7144                         $ver = $1;
7145                 }
7146                 $ver .= '-' . git_get_short_hash($project, $hash);
7147         }
7148         # in case of hierarchical branch names
7149         $ver =~ s!/!.!g;
7150
7151         # name = project-version_string
7152         $name = "$name-$ver";
7153
7154         return wantarray ? ($name, $name) : $name;
7155 }
7156
7157 sub exit_if_unmodified_since {
7158         my ($latest_epoch) = @_;
7159         our $cgi;
7160
7161         my $if_modified = $cgi->http('IF_MODIFIED_SINCE');
7162         if (defined $if_modified) {
7163                 my $since;
7164                 if (eval { require HTTP::Date; 1; }) {
7165                         $since = HTTP::Date::str2time($if_modified);
7166                 } elsif (eval { require Time::ParseDate; 1; }) {
7167                         $since = Time::ParseDate::parsedate($if_modified, GMT => 1);
7168                 }
7169                 if (defined $since && $latest_epoch <= $since) {
7170                         my %latest_date = parse_date($latest_epoch);
7171                         print $cgi->header(
7172                                 -last_modified => $latest_date{'rfc2822'},
7173                                 -status => '304 Not Modified');
7174                         goto DONE_GITWEB;
7175                 }
7176         }
7177 }
7178
7179 sub git_snapshot {
7180         my $format = $input_params{'snapshot_format'};
7181         if (!@snapshot_fmts) {
7182                 die_error(403, "Snapshots not allowed");
7183         }
7184         # default to first supported snapshot format
7185         $format ||= $snapshot_fmts[0];
7186         if ($format !~ m/^[a-z0-9]+$/) {
7187                 die_error(400, "Invalid snapshot format parameter");
7188         } elsif (!exists($known_snapshot_formats{$format})) {
7189                 die_error(400, "Unknown snapshot format");
7190         } elsif ($known_snapshot_formats{$format}{'disabled'}) {
7191                 die_error(403, "Snapshot format not allowed");
7192         } elsif (!grep($_ eq $format, @snapshot_fmts)) {
7193                 die_error(403, "Unsupported snapshot format");
7194         }
7195
7196         my $type = git_get_type("$hash^{}");
7197         if (!$type) {
7198                 die_error(404, 'Object does not exist');
7199         }  elsif ($type eq 'blob') {
7200                 die_error(400, 'Object is not a tree-ish');
7201         }
7202
7203         my ($name, $prefix) = snapshot_name($project, $hash);
7204         my $filename = "$name$known_snapshot_formats{$format}{'suffix'}";
7205
7206         my %co = parse_commit($hash);
7207         exit_if_unmodified_since($co{'committer_epoch'}) if %co;
7208
7209         my $cmd = quote_command(
7210                 git_cmd(), 'archive',
7211                 "--format=$known_snapshot_formats{$format}{'format'}",
7212                 "--prefix=$prefix/", $hash);
7213         if (exists $known_snapshot_formats{$format}{'compressor'}) {
7214                 $cmd .= ' | ' . quote_command(@{$known_snapshot_formats{$format}{'compressor'}});
7215         }
7216
7217         $filename =~ s/(["\\])/\\$1/g;
7218         my %latest_date;
7219         if (%co) {
7220                 %latest_date = parse_date($co{'committer_epoch'}, $co{'committer_tz'});
7221         }
7222
7223         print $cgi->header(
7224                 -type => $known_snapshot_formats{$format}{'type'},
7225                 -content_disposition => 'inline; filename="' . $filename . '"',
7226                 %co ? (-last_modified => $latest_date{'rfc2822'}) : (),
7227                 -status => '200 OK');
7228
7229         open my $fd, "-|", $cmd
7230                 or die_error(500, "Execute git-archive failed");
7231         binmode STDOUT, ':raw';
7232         print <$fd>;
7233         binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
7234         close $fd;
7235 }
7236
7237 sub git_log_generic {
7238         my ($fmt_name, $body_subr, $base, $parent, $file_name, $file_hash) = @_;
7239
7240         my $head = git_get_head_hash($project);
7241         if (!defined $base) {
7242                 $base = $head;
7243         }
7244         if (!defined $page) {
7245                 $page = 0;
7246         }
7247         my $refs = git_get_references();
7248
7249         my $commit_hash = $base;
7250         if (defined $parent) {
7251                 $commit_hash = "$parent..$base";
7252         }
7253         my @commitlist =
7254                 parse_commits($commit_hash, 101, (100 * $page),
7255                               defined $file_name ? ($file_name, "--full-history") : ());
7256
7257         my $ftype;
7258         if (!defined $file_hash && defined $file_name) {
7259                 # some commits could have deleted file in question,
7260                 # and not have it in tree, but one of them has to have it
7261                 for (my $i = 0; $i < @commitlist; $i++) {
7262                         $file_hash = git_get_hash_by_path($commitlist[$i]{'id'}, $file_name);
7263                         last if defined $file_hash;
7264                 }
7265         }
7266         if (defined $file_hash) {
7267                 $ftype = git_get_type($file_hash);
7268         }
7269         if (defined $file_name && !defined $ftype) {
7270                 die_error(500, "Unknown type of object");
7271         }
7272         my %co;
7273         if (defined $file_name) {
7274                 %co = parse_commit($base)
7275                         or die_error(404, "Unknown commit object");
7276         }
7277
7278
7279         my $paging_nav = format_paging_nav($fmt_name, $page, $#commitlist >= 100);
7280         my $next_link = '';
7281         if ($#commitlist >= 100) {
7282                 $next_link =
7283                         $cgi->a({-href => href(-replay=>1, page=>$page+1),
7284                                  -accesskey => "n", -title => "Alt-n"}, "next");
7285         }
7286         my $patch_max = gitweb_get_feature('patches');
7287         if ($patch_max && !defined $file_name) {
7288                 if ($patch_max < 0 || @commitlist <= $patch_max) {
7289                         $paging_nav .= " &sdot; " .
7290                                 $cgi->a({-href => href(action=>"patches", -replay=>1)},
7291                                         "patches");
7292                 }
7293         }
7294
7295         git_header_html();
7296         git_print_page_nav($fmt_name,'', $hash,$hash,$hash, $paging_nav);
7297         if (defined $file_name) {
7298                 git_print_header_div('commit', esc_html($co{'title'}), $base);
7299         } else {
7300                 git_print_header_div('summary', $project)
7301         }
7302         git_print_page_path($file_name, $ftype, $hash_base)
7303                 if (defined $file_name);
7304
7305         $body_subr->(\@commitlist, 0, 99, $refs, $next_link,
7306                      $file_name, $file_hash, $ftype);
7307
7308         git_footer_html();
7309 }
7310
7311 sub git_log {
7312         git_log_generic('log', \&git_log_body,
7313                         $hash, $hash_parent);
7314 }
7315
7316 sub git_commit {
7317         $hash ||= $hash_base || "HEAD";
7318         my %co = parse_commit($hash)
7319             or die_error(404, "Unknown commit object");
7320
7321         my $parent  = $co{'parent'};
7322         my $parents = $co{'parents'}; # listref
7323
7324         # we need to prepare $formats_nav before any parameter munging
7325         my $formats_nav;
7326         if (!defined $parent) {
7327                 # --root commitdiff
7328                 $formats_nav .= '(initial)';
7329         } elsif (@$parents == 1) {
7330                 # single parent commit
7331                 $formats_nav .=
7332                         '(parent: ' .
7333                         $cgi->a({-href => href(action=>"commit",
7334                                                hash=>$parent)},
7335                                 esc_html(substr($parent, 0, 7))) .
7336                         ')';
7337         } else {
7338                 # merge commit
7339                 $formats_nav .=
7340                         '(merge: ' .
7341                         join(' ', map {
7342                                 $cgi->a({-href => href(action=>"commit",
7343                                                        hash=>$_)},
7344                                         esc_html(substr($_, 0, 7)));
7345                         } @$parents ) .
7346                         ')';
7347         }
7348         if (gitweb_check_feature('patches') && @$parents <= 1) {
7349                 $formats_nav .= " | " .
7350                         $cgi->a({-href => href(action=>"patch", -replay=>1)},
7351                                 "patch");
7352         }
7353
7354         if (!defined $parent) {
7355                 $parent = "--root";
7356         }
7357         my @difftree;
7358         open my $fd, "-|", git_cmd(), "diff-tree", '-r', "--no-commit-id",
7359                 @diff_opts,
7360                 (@$parents <= 1 ? $parent : '-c'),
7361                 $hash, "--"
7362                 or die_error(500, "Open git-diff-tree failed");
7363         @difftree = map { chomp; $_ } <$fd>;
7364         close $fd or die_error(404, "Reading git-diff-tree failed");
7365
7366         # non-textual hash id's can be cached
7367         my $expires;
7368         if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
7369                 $expires = "+1d";
7370         }
7371         my $refs = git_get_references();
7372         my $ref = format_ref_marker($refs, $co{'id'});
7373
7374         git_header_html(undef, $expires);
7375         git_print_page_nav('commit', '',
7376                            $hash, $co{'tree'}, $hash,
7377                            $formats_nav);
7378
7379         if (defined $co{'parent'}) {
7380                 git_print_header_div('commitdiff', esc_html($co{'title'}) . $ref, $hash);
7381         } else {
7382                 git_print_header_div('tree', esc_html($co{'title'}) . $ref, $co{'tree'}, $hash);
7383         }
7384         print "<div class=\"title_text\">\n" .
7385               "<table class=\"object_header\">\n";
7386         git_print_authorship_rows(\%co);
7387         print "<tr><td>commit</td><td class=\"sha1\">$co{'id'}</td></tr>\n";
7388         print "<tr>" .
7389               "<td>tree</td>" .
7390               "<td class=\"sha1\">" .
7391               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash),
7392                        class => "list"}, $co{'tree'}) .
7393               "</td>" .
7394               "<td class=\"link\">" .
7395               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash)},
7396                       "tree");
7397         my $snapshot_links = format_snapshot_links($hash);
7398         if (defined $snapshot_links) {
7399                 print " | " . $snapshot_links;
7400         }
7401         print "</td>" .
7402               "</tr>\n";
7403
7404         foreach my $par (@$parents) {
7405                 print "<tr>" .
7406                       "<td>parent</td>" .
7407                       "<td class=\"sha1\">" .
7408                       $cgi->a({-href => href(action=>"commit", hash=>$par),
7409                                class => "list"}, $par) .
7410                       "</td>" .
7411                       "<td class=\"link\">" .
7412                       $cgi->a({-href => href(action=>"commit", hash=>$par)}, "commit") .
7413                       " | " .
7414                       $cgi->a({-href => href(action=>"commitdiff", hash=>$hash, hash_parent=>$par)}, "diff") .
7415                       "</td>" .
7416                       "</tr>\n";
7417         }
7418         print "</table>".
7419               "</div>\n";
7420
7421         print "<div class=\"page_body\">\n";
7422         git_print_log($co{'comment'});
7423         print "</div>\n";
7424
7425         git_difftree_body(\@difftree, $hash, @$parents);
7426
7427         git_footer_html();
7428 }
7429
7430 sub git_object {
7431         # object is defined by:
7432         # - hash or hash_base alone
7433         # - hash_base and file_name
7434         my $type;
7435
7436         # - hash or hash_base alone
7437         if ($hash || ($hash_base && !defined $file_name)) {
7438                 my $object_id = $hash || $hash_base;
7439
7440                 open my $fd, "-|", quote_command(
7441                         git_cmd(), 'cat-file', '-t', $object_id) . ' 2> /dev/null'
7442                         or die_error(404, "Object does not exist");
7443                 $type = <$fd>;
7444                 chomp $type;
7445                 close $fd
7446                         or die_error(404, "Object does not exist");
7447
7448         # - hash_base and file_name
7449         } elsif ($hash_base && defined $file_name) {
7450                 $file_name =~ s,/+$,,;
7451
7452                 system(git_cmd(), "cat-file", '-e', $hash_base) == 0
7453                         or die_error(404, "Base object does not exist");
7454
7455                 # here errors should not hapen
7456                 open my $fd, "-|", git_cmd(), "ls-tree", $hash_base, "--", $file_name
7457                         or die_error(500, "Open git-ls-tree failed");
7458                 my $line = <$fd>;
7459                 close $fd;
7460
7461                 #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
7462                 unless ($line && $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t/) {
7463                         die_error(404, "File or directory for given base does not exist");
7464                 }
7465                 $type = $2;
7466                 $hash = $3;
7467         } else {
7468                 die_error(400, "Not enough information to find object");
7469         }
7470
7471         print $cgi->redirect(-uri => href(action=>$type, -full=>1,
7472                                           hash=>$hash, hash_base=>$hash_base,
7473                                           file_name=>$file_name),
7474                              -status => '302 Found');
7475 }
7476
7477 sub git_blobdiff {
7478         my $format = shift || 'html';
7479         my $diff_style = $input_params{'diff_style'} || 'inline';
7480
7481         my $fd;
7482         my @difftree;
7483         my %diffinfo;
7484         my $expires;
7485
7486         # preparing $fd and %diffinfo for git_patchset_body
7487         # new style URI
7488         if (defined $hash_base && defined $hash_parent_base) {
7489                 if (defined $file_name) {
7490                         # read raw output
7491                         open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
7492                                 $hash_parent_base, $hash_base,
7493                                 "--", (defined $file_parent ? $file_parent : ()), $file_name
7494                                 or die_error(500, "Open git-diff-tree failed");
7495                         @difftree = map { chomp; $_ } <$fd>;
7496                         close $fd
7497                                 or die_error(404, "Reading git-diff-tree failed");
7498                         @difftree
7499                                 or die_error(404, "Blob diff not found");
7500
7501                 } elsif (defined $hash &&
7502                          $hash =~ /[0-9a-fA-F]{40}/) {
7503                         # try to find filename from $hash
7504
7505                         # read filtered raw output
7506                         open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
7507                                 $hash_parent_base, $hash_base, "--"
7508                                 or die_error(500, "Open git-diff-tree failed");
7509                         @difftree =
7510                                 # ':100644 100644 03b21826... 3b93d5e7... M     ls-files.c'
7511                                 # $hash == to_id
7512                                 grep { /^:[0-7]{6} [0-7]{6} [0-9a-fA-F]{40} $hash/ }
7513                                 map { chomp; $_ } <$fd>;
7514                         close $fd
7515                                 or die_error(404, "Reading git-diff-tree failed");
7516                         @difftree
7517                                 or die_error(404, "Blob diff not found");
7518
7519                 } else {
7520                         die_error(400, "Missing one of the blob diff parameters");
7521                 }
7522
7523                 if (@difftree > 1) {
7524                         die_error(400, "Ambiguous blob diff specification");
7525                 }
7526
7527                 %diffinfo = parse_difftree_raw_line($difftree[0]);
7528                 $file_parent ||= $diffinfo{'from_file'} || $file_name;
7529                 $file_name   ||= $diffinfo{'to_file'};
7530
7531                 $hash_parent ||= $diffinfo{'from_id'};
7532                 $hash        ||= $diffinfo{'to_id'};
7533
7534                 # non-textual hash id's can be cached
7535                 if ($hash_base =~ m/^[0-9a-fA-F]{40}$/ &&
7536                     $hash_parent_base =~ m/^[0-9a-fA-F]{40}$/) {
7537                         $expires = '+1d';
7538                 }
7539
7540                 # open patch output
7541                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
7542                         '-p', ($format eq 'html' ? "--full-index" : ()),
7543                         $hash_parent_base, $hash_base,
7544                         "--", (defined $file_parent ? $file_parent : ()), $file_name
7545                         or die_error(500, "Open git-diff-tree failed");
7546         }
7547
7548         # old/legacy style URI -- not generated anymore since 1.4.3.
7549         if (!%diffinfo) {
7550                 die_error('404 Not Found', "Missing one of the blob diff parameters")
7551         }
7552
7553         # header
7554         if ($format eq 'html') {
7555                 my $formats_nav =
7556                         $cgi->a({-href => href(action=>"blobdiff_plain", -replay=>1)},
7557                                 "raw");
7558                 $formats_nav .= diff_style_nav($diff_style);
7559                 git_header_html(undef, $expires);
7560                 if (defined $hash_base && (my %co = parse_commit($hash_base))) {
7561                         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
7562                         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
7563                 } else {
7564                         print "<div class=\"page_nav\"><br/>$formats_nav<br/></div>\n";
7565                         print "<div class=\"title\">".esc_html("$hash vs $hash_parent")."</div>\n";
7566                 }
7567                 if (defined $file_name) {
7568                         git_print_page_path($file_name, "blob", $hash_base);
7569                 } else {
7570                         print "<div class=\"page_path\"></div>\n";
7571                 }
7572
7573         } elsif ($format eq 'plain') {
7574                 print $cgi->header(
7575                         -type => 'text/plain',
7576                         -charset => 'utf-8',
7577                         -expires => $expires,
7578                         -content_disposition => 'inline; filename="' . "$file_name" . '.patch"');
7579
7580                 print "X-Git-Url: " . $cgi->self_url() . "\n\n";
7581
7582         } else {
7583                 die_error(400, "Unknown blobdiff format");
7584         }
7585
7586         # patch
7587         if ($format eq 'html') {
7588                 print "<div class=\"page_body\">\n";
7589
7590                 git_patchset_body($fd, $diff_style,
7591                                   [ \%diffinfo ], $hash_base, $hash_parent_base);
7592                 close $fd;
7593
7594                 print "</div>\n"; # class="page_body"
7595                 git_footer_html();
7596
7597         } else {
7598                 while (my $line = <$fd>) {
7599                         $line =~ s!a/($hash|$hash_parent)!'a/'.esc_path($diffinfo{'from_file'})!eg;
7600                         $line =~ s!b/($hash|$hash_parent)!'b/'.esc_path($diffinfo{'to_file'})!eg;
7601
7602                         print $line;
7603
7604                         last if $line =~ m!^\+\+\+!;
7605                 }
7606                 local $/ = undef;
7607                 print <$fd>;
7608                 close $fd;
7609         }
7610 }
7611
7612 sub git_blobdiff_plain {
7613         git_blobdiff('plain');
7614 }
7615
7616 # assumes that it is added as later part of already existing navigation,
7617 # so it returns "| foo | bar" rather than just "foo | bar"
7618 sub diff_style_nav {
7619         my ($diff_style, $is_combined) = @_;
7620         $diff_style ||= 'inline';
7621
7622         return "" if ($is_combined);
7623
7624         my @styles = (inline => 'inline', 'sidebyside' => 'side by side');
7625         my %styles = @styles;
7626         @styles =
7627                 @styles[ map { $_ * 2 } 0..$#styles/2 ];
7628
7629         return join '',
7630                 map { " | ".$_ }
7631                 map {
7632                         $_ eq $diff_style ? $styles{$_} :
7633                         $cgi->a({-href => href(-replay=>1, diff_style => $_)}, $styles{$_})
7634                 } @styles;
7635 }
7636
7637 sub git_commitdiff {
7638         my %params = @_;
7639         my $format = $params{-format} || 'html';
7640         my $diff_style = $input_params{'diff_style'} || 'inline';
7641
7642         my ($patch_max) = gitweb_get_feature('patches');
7643         if ($format eq 'patch') {
7644                 die_error(403, "Patch view not allowed") unless $patch_max;
7645         }
7646
7647         $hash ||= $hash_base || "HEAD";
7648         my %co = parse_commit($hash)
7649             or die_error(404, "Unknown commit object");
7650
7651         # choose format for commitdiff for merge
7652         if (! defined $hash_parent && @{$co{'parents'}} > 1) {
7653                 $hash_parent = '--cc';
7654         }
7655         # we need to prepare $formats_nav before almost any parameter munging
7656         my $formats_nav;
7657         if ($format eq 'html') {
7658                 $formats_nav =
7659                         $cgi->a({-href => href(action=>"commitdiff_plain", -replay=>1)},
7660                                 "raw");
7661                 if ($patch_max && @{$co{'parents'}} <= 1) {
7662                         $formats_nav .= " | " .
7663                                 $cgi->a({-href => href(action=>"patch", -replay=>1)},
7664                                         "patch");
7665                 }
7666                 $formats_nav .= diff_style_nav($diff_style, @{$co{'parents'}} > 1);
7667
7668                 if (defined $hash_parent &&
7669                     $hash_parent ne '-c' && $hash_parent ne '--cc') {
7670                         # commitdiff with two commits given
7671                         my $hash_parent_short = $hash_parent;
7672                         if ($hash_parent =~ m/^[0-9a-fA-F]{40}$/) {
7673                                 $hash_parent_short = substr($hash_parent, 0, 7);
7674                         }
7675                         $formats_nav .=
7676                                 ' (from';
7677                         for (my $i = 0; $i < @{$co{'parents'}}; $i++) {
7678                                 if ($co{'parents'}[$i] eq $hash_parent) {
7679                                         $formats_nav .= ' parent ' . ($i+1);
7680                                         last;
7681                                 }
7682                         }
7683                         $formats_nav .= ': ' .
7684                                 $cgi->a({-href => href(-replay=>1,
7685                                                        hash=>$hash_parent, hash_base=>undef)},
7686                                         esc_html($hash_parent_short)) .
7687                                 ')';
7688                 } elsif (!$co{'parent'}) {
7689                         # --root commitdiff
7690                         $formats_nav .= ' (initial)';
7691                 } elsif (scalar @{$co{'parents'}} == 1) {
7692                         # single parent commit
7693                         $formats_nav .=
7694                                 ' (parent: ' .
7695                                 $cgi->a({-href => href(-replay=>1,
7696                                                        hash=>$co{'parent'}, hash_base=>undef)},
7697                                         esc_html(substr($co{'parent'}, 0, 7))) .
7698                                 ')';
7699                 } else {
7700                         # merge commit
7701                         if ($hash_parent eq '--cc') {
7702                                 $formats_nav .= ' | ' .
7703                                         $cgi->a({-href => href(-replay=>1,
7704                                                                hash=>$hash, hash_parent=>'-c')},
7705                                                 'combined');
7706                         } else { # $hash_parent eq '-c'
7707                                 $formats_nav .= ' | ' .
7708                                         $cgi->a({-href => href(-replay=>1,
7709                                                                hash=>$hash, hash_parent=>'--cc')},
7710                                                 'compact');
7711                         }
7712                         $formats_nav .=
7713                                 ' (merge: ' .
7714                                 join(' ', map {
7715                                         $cgi->a({-href => href(-replay=>1,
7716                                                                hash=>$_, hash_base=>undef)},
7717                                                 esc_html(substr($_, 0, 7)));
7718                                 } @{$co{'parents'}} ) .
7719                                 ')';
7720                 }
7721         }
7722
7723         my $hash_parent_param = $hash_parent;
7724         if (!defined $hash_parent_param) {
7725                 # --cc for multiple parents, --root for parentless
7726                 $hash_parent_param =
7727                         @{$co{'parents'}} > 1 ? '--cc' : $co{'parent'} || '--root';
7728         }
7729
7730         # read commitdiff
7731         my $fd;
7732         my @difftree;
7733         if ($format eq 'html') {
7734                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
7735                         "--no-commit-id", "--patch-with-raw", "--full-index",
7736                         $hash_parent_param, $hash, "--"
7737                         or die_error(500, "Open git-diff-tree failed");
7738
7739                 while (my $line = <$fd>) {
7740                         chomp $line;
7741                         # empty line ends raw part of diff-tree output
7742                         last unless $line;
7743                         push @difftree, scalar parse_difftree_raw_line($line);
7744                 }
7745
7746         } elsif ($format eq 'plain') {
7747                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
7748                         '-p', $hash_parent_param, $hash, "--"
7749                         or die_error(500, "Open git-diff-tree failed");
7750         } elsif ($format eq 'patch') {
7751                 # For commit ranges, we limit the output to the number of
7752                 # patches specified in the 'patches' feature.
7753                 # For single commits, we limit the output to a single patch,
7754                 # diverging from the git-format-patch default.
7755                 my @commit_spec = ();
7756                 if ($hash_parent) {
7757                         if ($patch_max > 0) {
7758                                 push @commit_spec, "-$patch_max";
7759                         }
7760                         push @commit_spec, '-n', "$hash_parent..$hash";
7761                 } else {
7762                         if ($params{-single}) {
7763                                 push @commit_spec, '-1';
7764                         } else {
7765                                 if ($patch_max > 0) {
7766                                         push @commit_spec, "-$patch_max";
7767                                 }
7768                                 push @commit_spec, "-n";
7769                         }
7770                         push @commit_spec, '--root', $hash;
7771                 }
7772                 open $fd, "-|", git_cmd(), "format-patch", @diff_opts,
7773                         '--encoding=utf8', '--stdout', @commit_spec
7774                         or die_error(500, "Open git-format-patch failed");
7775         } else {
7776                 die_error(400, "Unknown commitdiff format");
7777         }
7778
7779         # non-textual hash id's can be cached
7780         my $expires;
7781         if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
7782                 $expires = "+1d";
7783         }
7784
7785         # write commit message
7786         if ($format eq 'html') {
7787                 my $refs = git_get_references();
7788                 my $ref = format_ref_marker($refs, $co{'id'});
7789
7790                 git_header_html(undef, $expires);
7791                 git_print_page_nav('commitdiff','', $hash,$co{'tree'},$hash, $formats_nav);
7792                 git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash);
7793                 print "<div class=\"title_text\">\n" .
7794                       "<table class=\"object_header\">\n";
7795                 git_print_authorship_rows(\%co);
7796                 print "</table>".
7797                       "</div>\n";
7798                 print "<div class=\"page_body\">\n";
7799                 if (@{$co{'comment'}} > 1) {
7800                         print "<div class=\"log\">\n";
7801                         git_print_log($co{'comment'}, -final_empty_line=> 1, -remove_title => 1);
7802                         print "</div>\n"; # class="log"
7803                 }
7804
7805         } elsif ($format eq 'plain') {
7806                 my $refs = git_get_references("tags");
7807                 my $tagname = git_get_rev_name_tags($hash);
7808                 my $filename = basename($project) . "-$hash.patch";
7809
7810                 print $cgi->header(
7811                         -type => 'text/plain',
7812                         -charset => 'utf-8',
7813                         -expires => $expires,
7814                         -content_disposition => 'inline; filename="' . "$filename" . '"');
7815                 my %ad = parse_date($co{'author_epoch'}, $co{'author_tz'});
7816                 print "From: " . to_utf8($co{'author'}) . "\n";
7817                 print "Date: $ad{'rfc2822'} ($ad{'tz_local'})\n";
7818                 print "Subject: " . to_utf8($co{'title'}) . "\n";
7819
7820                 print "X-Git-Tag: $tagname\n" if $tagname;
7821                 print "X-Git-Url: " . $cgi->self_url() . "\n\n";
7822
7823                 foreach my $line (@{$co{'comment'}}) {
7824                         print to_utf8($line) . "\n";
7825                 }
7826                 print "---\n\n";
7827         } elsif ($format eq 'patch') {
7828                 my $filename = basename($project) . "-$hash.patch";
7829
7830                 print $cgi->header(
7831                         -type => 'text/plain',
7832                         -charset => 'utf-8',
7833                         -expires => $expires,
7834                         -content_disposition => 'inline; filename="' . "$filename" . '"');
7835         }
7836
7837         # write patch
7838         if ($format eq 'html') {
7839                 my $use_parents = !defined $hash_parent ||
7840                         $hash_parent eq '-c' || $hash_parent eq '--cc';
7841                 git_difftree_body(\@difftree, $hash,
7842                                   $use_parents ? @{$co{'parents'}} : $hash_parent);
7843                 print "<br/>\n";
7844
7845                 git_patchset_body($fd, $diff_style,
7846                                   \@difftree, $hash,
7847                                   $use_parents ? @{$co{'parents'}} : $hash_parent);
7848                 close $fd;
7849                 print "</div>\n"; # class="page_body"
7850                 git_footer_html();
7851
7852         } elsif ($format eq 'plain') {
7853                 local $/ = undef;
7854                 print <$fd>;
7855                 close $fd
7856                         or print "Reading git-diff-tree failed\n";
7857         } elsif ($format eq 'patch') {
7858                 local $/ = undef;
7859                 print <$fd>;
7860                 close $fd
7861                         or print "Reading git-format-patch failed\n";
7862         }
7863 }
7864
7865 sub git_commitdiff_plain {
7866         git_commitdiff(-format => 'plain');
7867 }
7868
7869 # format-patch-style patches
7870 sub git_patch {
7871         git_commitdiff(-format => 'patch', -single => 1);
7872 }
7873
7874 sub git_patches {
7875         git_commitdiff(-format => 'patch');
7876 }
7877
7878 sub git_history {
7879         git_log_generic('history', \&git_history_body,
7880                         $hash_base, $hash_parent_base,
7881                         $file_name, $hash);
7882 }
7883
7884 sub git_search {
7885         $searchtype ||= 'commit';
7886
7887         # check if appropriate features are enabled
7888         gitweb_check_feature('search')
7889                 or die_error(403, "Search is disabled");
7890         if ($searchtype eq 'pickaxe') {
7891                 # pickaxe may take all resources of your box and run for several minutes
7892                 # with every query - so decide by yourself how public you make this feature
7893                 gitweb_check_feature('pickaxe')
7894                         or die_error(403, "Pickaxe search is disabled");
7895         }
7896         if ($searchtype eq 'grep') {
7897                 # grep search might be potentially CPU-intensive, too
7898                 gitweb_check_feature('grep')
7899                         or die_error(403, "Grep search is disabled");
7900         }
7901
7902         if (!defined $searchtext) {
7903                 die_error(400, "Text field is empty");
7904         }
7905         if (!defined $hash) {
7906                 $hash = git_get_head_hash($project);
7907         }
7908         my %co = parse_commit($hash);
7909         if (!%co) {
7910                 die_error(404, "Unknown commit object");
7911         }
7912         if (!defined $page) {
7913                 $page = 0;
7914         }
7915
7916         if ($searchtype eq 'commit' ||
7917             $searchtype eq 'author' ||
7918             $searchtype eq 'committer') {
7919                 git_search_message(%co);
7920         } elsif ($searchtype eq 'pickaxe') {
7921                 git_search_changes(%co);
7922         } elsif ($searchtype eq 'grep') {
7923                 git_search_files(%co);
7924         } else {
7925                 die_error(400, "Unknown search type");
7926         }
7927 }
7928
7929 sub git_search_help {
7930         git_header_html();
7931         git_print_page_nav('','', $hash,$hash,$hash);
7932         print <<EOT;
7933 <p><strong>Pattern</strong> is by default a normal string that is matched precisely (but without
7934 regard to case, except in the case of pickaxe). However, when you check the <em>re</em> checkbox,
7935 the pattern entered is recognized as the POSIX extended
7936 <a href="http://en.wikipedia.org/wiki/Regular_expression">regular expression</a> (also case
7937 insensitive).</p>
7938 <dl>
7939 <dt><b>commit</b></dt>
7940 <dd>The commit messages and authorship information will be scanned for the given pattern.</dd>
7941 EOT
7942         my $have_grep = gitweb_check_feature('grep');
7943         if ($have_grep) {
7944                 print <<EOT;
7945 <dt><b>grep</b></dt>
7946 <dd>All files in the currently selected tree (HEAD unless you are explicitly browsing
7947     a different one) are searched for the given pattern. On large trees, this search can take
7948 a while and put some strain on the server, so please use it with some consideration. Note that
7949 due to git-grep peculiarity, currently if regexp mode is turned off, the matches are
7950 case-sensitive.</dd>
7951 EOT
7952         }
7953         print <<EOT;
7954 <dt><b>author</b></dt>
7955 <dd>Name and e-mail of the change author and date of birth of the patch will be scanned for the given pattern.</dd>
7956 <dt><b>committer</b></dt>
7957 <dd>Name and e-mail of the committer and date of commit will be scanned for the given pattern.</dd>
7958 EOT
7959         my $have_pickaxe = gitweb_check_feature('pickaxe');
7960         if ($have_pickaxe) {
7961                 print <<EOT;
7962 <dt><b>pickaxe</b></dt>
7963 <dd>All commits that caused the string to appear or disappear from any file (changes that
7964 added, removed or "modified" the string) will be listed. This search can take a while and
7965 takes a lot of strain on the server, so please use it wisely. Note that since you may be
7966 interested even in changes just changing the case as well, this search is case sensitive.</dd>
7967 EOT
7968         }
7969         print "</dl>\n";
7970         git_footer_html();
7971 }
7972
7973 sub git_shortlog {
7974         git_log_generic('shortlog', \&git_shortlog_body,
7975                         $hash, $hash_parent);
7976 }
7977
7978 ## ......................................................................
7979 ## feeds (RSS, Atom; OPML)
7980
7981 sub git_feed {
7982         my $format = shift || 'atom';
7983         my $have_blame = gitweb_check_feature('blame');
7984
7985         # Atom: http://www.atomenabled.org/developers/syndication/
7986         # RSS:  http://www.notestips.com/80256B3A007F2692/1/NAMO5P9UPQ
7987         if ($format ne 'rss' && $format ne 'atom') {
7988                 die_error(400, "Unknown web feed format");
7989         }
7990
7991         # log/feed of current (HEAD) branch, log of given branch, history of file/directory
7992         my $head = $hash || 'HEAD';
7993         my @commitlist = parse_commits($head, 150, 0, $file_name);
7994
7995         my %latest_commit;
7996         my %latest_date;
7997         my $content_type = "application/$format+xml";
7998         if (defined $cgi->http('HTTP_ACCEPT') &&
7999                  $cgi->Accept('text/xml') > $cgi->Accept($content_type)) {
8000                 # browser (feed reader) prefers text/xml
8001                 $content_type = 'text/xml';
8002         }
8003         if (defined($commitlist[0])) {
8004                 %latest_commit = %{$commitlist[0]};
8005                 my $latest_epoch = $latest_commit{'committer_epoch'};
8006                 exit_if_unmodified_since($latest_epoch);
8007                 %latest_date = parse_date($latest_epoch, $latest_commit{'comitter_tz'});
8008         }
8009         print $cgi->header(
8010                 -type => $content_type,
8011                 -charset => 'utf-8',
8012                 %latest_date ? (-last_modified => $latest_date{'rfc2822'}) : (),
8013                 -status => '200 OK');
8014
8015         # Optimization: skip generating the body if client asks only
8016         # for Last-Modified date.
8017         return if ($cgi->request_method() eq 'HEAD');
8018
8019         # header variables
8020         my $title = "$site_name - $project/$action";
8021         my $feed_type = 'log';
8022         if (defined $hash) {
8023                 $title .= " - '$hash'";
8024                 $feed_type = 'branch log';
8025                 if (defined $file_name) {
8026                         $title .= " :: $file_name";
8027                         $feed_type = 'history';
8028                 }
8029         } elsif (defined $file_name) {
8030                 $title .= " - $file_name";
8031                 $feed_type = 'history';
8032         }
8033         $title .= " $feed_type";
8034         my $descr = git_get_project_description($project);
8035         if (defined $descr) {
8036                 $descr = esc_html($descr);
8037         } else {
8038                 $descr = "$project " .
8039                          ($format eq 'rss' ? 'RSS' : 'Atom') .
8040                          " feed";
8041         }
8042         my $owner = git_get_project_owner($project);
8043         $owner = esc_html($owner);
8044
8045         #header
8046         my $alt_url;
8047         if (defined $file_name) {
8048                 $alt_url = href(-full=>1, action=>"history", hash=>$hash, file_name=>$file_name);
8049         } elsif (defined $hash) {
8050                 $alt_url = href(-full=>1, action=>"log", hash=>$hash);
8051         } else {
8052                 $alt_url = href(-full=>1, action=>"summary");
8053         }
8054         print qq!<?xml version="1.0" encoding="utf-8"?>\n!;
8055         if ($format eq 'rss') {
8056                 print <<XML;
8057 <rss version="2.0" xmlns:content="http://purl.org/rss/1.0/modules/content/">
8058 <channel>
8059 XML
8060                 print "<title>$title</title>\n" .
8061                       "<link>$alt_url</link>\n" .
8062                       "<description>$descr</description>\n" .
8063                       "<language>en</language>\n" .
8064                       # project owner is responsible for 'editorial' content
8065                       "<managingEditor>$owner</managingEditor>\n";
8066                 if (defined $logo || defined $favicon) {
8067                         # prefer the logo to the favicon, since RSS
8068                         # doesn't allow both
8069                         my $img = esc_url($logo || $favicon);
8070                         print "<image>\n" .
8071                               "<url>$img</url>\n" .
8072                               "<title>$title</title>\n" .
8073                               "<link>$alt_url</link>\n" .
8074                               "</image>\n";
8075                 }
8076                 if (%latest_date) {
8077                         print "<pubDate>$latest_date{'rfc2822'}</pubDate>\n";
8078                         print "<lastBuildDate>$latest_date{'rfc2822'}</lastBuildDate>\n";
8079                 }
8080                 print "<generator>gitweb v.$version/$git_version</generator>\n";
8081         } elsif ($format eq 'atom') {
8082                 print <<XML;
8083 <feed xmlns="http://www.w3.org/2005/Atom">
8084 XML
8085                 print "<title>$title</title>\n" .
8086                       "<subtitle>$descr</subtitle>\n" .
8087                       '<link rel="alternate" type="text/html" href="' .
8088                       $alt_url . '" />' . "\n" .
8089                       '<link rel="self" type="' . $content_type . '" href="' .
8090                       $cgi->self_url() . '" />' . "\n" .
8091                       "<id>" . href(-full=>1) . "</id>\n" .
8092                       # use project owner for feed author
8093                       "<author><name>$owner</name></author>\n";
8094                 if (defined $favicon) {
8095                         print "<icon>" . esc_url($favicon) . "</icon>\n";
8096                 }
8097                 if (defined $logo) {
8098                         # not twice as wide as tall: 72 x 27 pixels
8099                         print "<logo>" . esc_url($logo) . "</logo>\n";
8100                 }
8101                 if (! %latest_date) {
8102                         # dummy date to keep the feed valid until commits trickle in:
8103                         print "<updated>1970-01-01T00:00:00Z</updated>\n";
8104                 } else {
8105                         print "<updated>$latest_date{'iso-8601'}</updated>\n";
8106                 }
8107                 print "<generator version='$version/$git_version'>gitweb</generator>\n";
8108         }
8109
8110         # contents
8111         for (my $i = 0; $i <= $#commitlist; $i++) {
8112                 my %co = %{$commitlist[$i]};
8113                 my $commit = $co{'id'};
8114                 # we read 150, we always show 30 and the ones more recent than 48 hours
8115                 if (($i >= 20) && ((time - $co{'author_epoch'}) > 48*60*60)) {
8116                         last;
8117                 }
8118                 my %cd = parse_date($co{'author_epoch'}, $co{'author_tz'});
8119
8120                 # get list of changed files
8121                 open my $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
8122                         $co{'parent'} || "--root",
8123                         $co{'id'}, "--", (defined $file_name ? $file_name : ())
8124                         or next;
8125                 my @difftree = map { chomp; $_ } <$fd>;
8126                 close $fd
8127                         or next;
8128
8129                 # print element (entry, item)
8130                 my $co_url = href(-full=>1, action=>"commitdiff", hash=>$commit);
8131                 if ($format eq 'rss') {
8132                         print "<item>\n" .
8133                               "<title>" . esc_html($co{'title'}) . "</title>\n" .
8134                               "<author>" . esc_html($co{'author'}) . "</author>\n" .
8135                               "<pubDate>$cd{'rfc2822'}</pubDate>\n" .
8136                               "<guid isPermaLink=\"true\">$co_url</guid>\n" .
8137                               "<link>$co_url</link>\n" .
8138                               "<description>" . esc_html($co{'title'}) . "</description>\n" .
8139                               "<content:encoded>" .
8140                               "<![CDATA[\n";
8141                 } elsif ($format eq 'atom') {
8142                         print "<entry>\n" .
8143                               "<title type=\"html\">" . esc_html($co{'title'}) . "</title>\n" .
8144                               "<updated>$cd{'iso-8601'}</updated>\n" .
8145                               "<author>\n" .
8146                               "  <name>" . esc_html($co{'author_name'}) . "</name>\n";
8147                         if ($co{'author_email'}) {
8148                                 print "  <email>" . esc_html($co{'author_email'}) . "</email>\n";
8149                         }
8150                         print "</author>\n" .
8151                               # use committer for contributor
8152                               "<contributor>\n" .
8153                               "  <name>" . esc_html($co{'committer_name'}) . "</name>\n";
8154                         if ($co{'committer_email'}) {
8155                                 print "  <email>" . esc_html($co{'committer_email'}) . "</email>\n";
8156                         }
8157                         print "</contributor>\n" .
8158                               "<published>$cd{'iso-8601'}</published>\n" .
8159                               "<link rel=\"alternate\" type=\"text/html\" href=\"$co_url\" />\n" .
8160                               "<id>$co_url</id>\n" .
8161                               "<content type=\"xhtml\" xml:base=\"" . esc_url($my_url) . "\">\n" .
8162                               "<div xmlns=\"http://www.w3.org/1999/xhtml\">\n";
8163                 }
8164                 my $comment = $co{'comment'};
8165                 print "<pre>\n";
8166                 foreach my $line (@$comment) {
8167                         $line = esc_html($line);
8168                         print "$line\n";
8169                 }
8170                 print "</pre><ul>\n";
8171                 foreach my $difftree_line (@difftree) {
8172                         my %difftree = parse_difftree_raw_line($difftree_line);
8173                         next if !$difftree{'from_id'};
8174
8175                         my $file = $difftree{'file'} || $difftree{'to_file'};
8176
8177                         print "<li>" .
8178                               "[" .
8179                               $cgi->a({-href => href(-full=>1, action=>"blobdiff",
8180                                                      hash=>$difftree{'to_id'}, hash_parent=>$difftree{'from_id'},
8181                                                      hash_base=>$co{'id'}, hash_parent_base=>$co{'parent'},
8182                                                      file_name=>$file, file_parent=>$difftree{'from_file'}),
8183                                       -title => "diff"}, 'D');
8184                         if ($have_blame) {
8185                                 print $cgi->a({-href => href(-full=>1, action=>"blame",
8186                                                              file_name=>$file, hash_base=>$commit),
8187                                               -title => "blame"}, 'B');
8188                         }
8189                         # if this is not a feed of a file history
8190                         if (!defined $file_name || $file_name ne $file) {
8191                                 print $cgi->a({-href => href(-full=>1, action=>"history",
8192                                                              file_name=>$file, hash=>$commit),
8193                                               -title => "history"}, 'H');
8194                         }
8195                         $file = esc_path($file);
8196                         print "] ".
8197                               "$file</li>\n";
8198                 }
8199                 if ($format eq 'rss') {
8200                         print "</ul>]]>\n" .
8201                               "</content:encoded>\n" .
8202                               "</item>\n";
8203                 } elsif ($format eq 'atom') {
8204                         print "</ul>\n</div>\n" .
8205                               "</content>\n" .
8206                               "</entry>\n";
8207                 }
8208         }
8209
8210         # end of feed
8211         if ($format eq 'rss') {
8212                 print "</channel>\n</rss>\n";
8213         } elsif ($format eq 'atom') {
8214                 print "</feed>\n";
8215         }
8216 }
8217
8218 sub git_rss {
8219         git_feed('rss');
8220 }
8221
8222 sub git_atom {
8223         git_feed('atom');
8224 }
8225
8226 sub git_opml {
8227         my @list = git_get_projects_list($project_filter, $strict_export);
8228         if (!@list) {
8229                 die_error(404, "No projects found");
8230         }
8231
8232         print $cgi->header(
8233                 -type => 'text/xml',
8234                 -charset => 'utf-8',
8235                 -content_disposition => 'inline; filename="opml.xml"');
8236
8237         my $title = esc_html($site_name);
8238         my $filter = " within subdirectory ";
8239         if (defined $project_filter) {
8240                 $filter .= esc_html($project_filter);
8241         } else {
8242                 $filter = "";
8243         }
8244         print <<XML;
8245 <?xml version="1.0" encoding="utf-8"?>
8246 <opml version="1.0">
8247 <head>
8248   <title>$title OPML Export$filter</title>
8249 </head>
8250 <body>
8251 <outline text="git RSS feeds">
8252 XML
8253
8254         foreach my $pr (@list) {
8255                 my %proj = %$pr;
8256                 my $head = git_get_head_hash($proj{'path'});
8257                 if (!defined $head) {
8258                         next;
8259                 }
8260                 $git_dir = "$projectroot/$proj{'path'}";
8261                 my %co = parse_commit($head);
8262                 if (!%co) {
8263                         next;
8264                 }
8265
8266                 my $path = esc_html(chop_str($proj{'path'}, 25, 5));
8267                 my $rss  = href('project' => $proj{'path'}, 'action' => 'rss', -full => 1);
8268                 my $html = href('project' => $proj{'path'}, 'action' => 'summary', -full => 1);
8269                 print "<outline type=\"rss\" text=\"$path\" title=\"$path\" xmlUrl=\"$rss\" htmlUrl=\"$html\"/>\n";
8270         }
8271         print <<XML;
8272 </outline>
8273 </body>
8274 </opml>
8275 XML
8276 }