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