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