gitweb.cgi

   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 BEGIN {
  22         CGI->compile() if $ENV{'MOD_PERL'};
  23 }
  24
  25 our $cgi = new CGI;
  26 our $version = "1.5.4.2";
  27 our $my_url = $cgi->url();
  28 our $my_uri = $cgi->url(-absolute => 1);
  29
  30 # core git executable to use
  31 # this can just be "git" if your webserver has a sensible PATH
  32 our $GIT = "/usr/bin/git";
  33
  34 # absolute fs-path which will be prepended to the project path
  35 #our $projectroot = "/pub/scm";
  36 our $projectroot = "/pub/git";
  37
  38 # fs traversing limit for getting project list
  39 # the number is relative to the projectroot
  40 our $project_maxdepth = 2007;
  41
  42 # target of the home link on top of all pages
  43 our $home_link = $my_uri || "/";
  44
  45 # string of the home link on top of all pages
  46 # hcoop-change: Customize.
  47 our $home_link_str = "HCoop";
  48
  49 # name of your site or organization to appear in page titles
  50 # replace this with something more descriptive for clearer bookmarks
  51 # hcoop-change: Customize.
  52 our $site_name = "HCoop Git"
  53                  || ($ENV{'SERVER_NAME'} || "Untitled") . " Git";
  54
  55 # filename of html text to include at top of each page
  56 our $site_header = "";
  57 # html text to include at home page
  58 our $home_text = "indextext.html";
  59 # filename of html text to include at bottom of each page
  60 our $site_footer = "";
  61
  62 # URI of stylesheets
  63 our @stylesheets = ("gitweb.css");
  64 # URI of a single stylesheet, which can be overridden in GITWEB_CONFIG.
  65 our $stylesheet = undef;
  66 # URI of GIT logo (72x27 size)
  67 our $logo = "git-logo.png";
  68 # URI of GIT favicon, assumed to be image/png type
  69 our $favicon = "git-favicon.png";
  70
  71 # URI and label (title) of GIT logo link
  72 #our $logo_url = "http://www.kernel.org/pub/software/scm/git/docs/";
  73 #our $logo_label = "git documentation";
  74 our $logo_url = "http://git.or.cz/";
  75 our $logo_label = "git homepage";
  76
  77 # source of projects list
  78 our $projects_list = "";
  79
  80 # the width (in characters) of the projects list "Description" column
  81 our $projects_list_description_width = 25;
  82
  83 # default order of projects list
  84 # valid values are none, project, descr, owner, and age
  85 our $default_projects_order = "project";
  86
  87 # show repository only if this file exists
  88 # (only effective if this variable evaluates to true)
  89 our $export_ok = "";
  90
  91 # only allow viewing of repositories also shown on the overview page
  92 our $strict_export = "";
  93
  94 # list of git base URLs used for URL to where fetch project from,
  95 # i.e. full URL is "$git_base_url/$project"
  96 # hcoop-change: We like several URLs.
  97 #our @git_base_url_list = grep { $_ ne '' } ("");
  98 our @git_base_url_list = ('git://git.hcoop.net/git',
  99                           'http://git.hcoop.net/git');
 100
 101 # default blob_plain mimetype and default charset for text/plain blob
 102 our $default_blob_plain_mimetype = 'text/plain';
 103 our $default_text_plain_charset  = undef;
 104
 105 # file to use for guessing MIME types before trying /etc/mime.types
 106 # (relative to the current git repository)
 107 our $mimetypes_file = undef;
 108
 109 # assume this charset if line contains non-UTF-8 characters;
 110 # it should be valid encoding (see Encoding::Supported(3pm) for list),
 111 # for which encoding all byte sequences are valid, for example
 112 # 'iso-8859-1' aka 'latin1' (it is decoded without checking, so it
 113 # could be even 'utf-8' for the old behavior)
 114 our $fallback_encoding = 'latin1';
 115
 116 # rename detection options for git-diff and git-diff-tree
 117 # - default is '-M', with the cost proportional to
 118 #   (number of removed files) * (number of new files).
 119 # - more costly is '-C' (which implies '-M'), with the cost proportional to
 120 #   (number of changed files + number of removed files) * (number of new files)
 121 # - even more costly is '-C', '--find-copies-harder' with cost
 122 #   (number of files in the original tree) * (number of new files)
 123 # - one might want to include '-B' option, e.g. '-B', '-M'
 124 our @diff_opts = ('-M'); # taken from git_commit
 125
 126 # information about snapshot formats that gitweb is capable of serving
 127 our %known_snapshot_formats = (
 128         # name => {
 129         #       'display' => display name,
 130         #       'type' => mime type,
 131         #       'suffix' => filename suffix,
 132         #       'format' => --format for git-archive,
 133         #       'compressor' => [compressor command and arguments]
 134         #                       (array reference, optional)}
 135         #
 136         'tgz' => {
 137                 'display' => 'tar.gz',
 138                 'type' => 'application/x-gzip',
 139                 'suffix' => '.tar.gz',
 140                 'format' => 'tar',
 141                 'compressor' => ['gzip']},
 142
 143         'tbz2' => {
 144                 'display' => 'tar.bz2',
 145                 'type' => 'application/x-bzip2',
 146                 'suffix' => '.tar.bz2',
 147                 'format' => 'tar',
 148                 'compressor' => ['bzip2']},
 149
 150         'zip' => {
 151                 'display' => 'zip',
 152                 'type' => 'application/x-zip',
 153                 'suffix' => '.zip',
 154                 'format' => 'zip'},
 155 );
 156
 157 # Aliases so we understand old gitweb.snapshot values in repository
 158 # configuration.
 159 our %known_snapshot_format_aliases = (
 160         'gzip'  => 'tgz',
 161         'bzip2' => 'tbz2',
 162
 163         # backward compatibility: legacy gitweb config support
 164         'x-gzip' => undef, 'gz' => undef,
 165         'x-bzip2' => undef, 'bz2' => undef,
 166         'x-zip' => undef, '' => undef,
 167 );
 168
 169 # You define site-wide feature defaults here; override them with
 170 # $GITWEB_CONFIG as necessary.
 171 our %feature = (
 172         # feature => {
 173         #       'sub' => feature-sub (subroutine),
 174         #       'override' => allow-override (boolean),
 175         #       'default' => [ default options...] (array reference)}
 176         #
 177         # if feature is overridable (it means that allow-override has true value),
 178         # then feature-sub will be called with default options as parameters;
 179         # return value of feature-sub indicates if to enable specified feature
 180         #
 181         # if there is no 'sub' key (no feature-sub), then feature cannot be
 182         # overriden
 183         #
 184         # use gitweb_check_feature(<feature>) to check if <feature> is enabled
 185
 186         # Enable the 'blame' blob view, showing the last commit that modified
 187         # each line in the file. This can be very CPU-intensive.
 188
 189         # To enable system wide have in $GITWEB_CONFIG
 190         # $feature{'blame'}{'default'} = [1];
 191         # To have project specific config enable override in $GITWEB_CONFIG
 192         # $feature{'blame'}{'override'} = 1;
 193         # and in project config gitweb.blame = 0|1;
 194         'blame' => {
 195                 'sub' => \&feature_blame,
 196                 'override' => 0,
 197                 'default' => [0]},
 198
 199         # Enable the 'snapshot' link, providing a compressed archive of any
 200         # tree. This can potentially generate high traffic if you have large
 201         # project.
 202
 203         # Value is a list of formats defined in %known_snapshot_formats that
 204         # you wish to offer.
 205         # To disable system wide have in $GITWEB_CONFIG
 206         # $feature{'snapshot'}{'default'} = [];
 207         # To have project specific config enable override in $GITWEB_CONFIG
 208         # $feature{'snapshot'}{'override'} = 1;
 209         # and in project config, a comma-separated list of formats or "none"
 210         # to disable.  Example: gitweb.snapshot = tbz2,zip;
 211         'snapshot' => {
 212                 'sub' => \&feature_snapshot,
 213                 'override' => 0,
 214                 'default' => ['tgz']},
 215
 216         # Enable text search, which will list the commits which match author,
 217         # committer or commit text to a given string.  Enabled by default.
 218         # Project specific override is not supported.
 219         'search' => {
 220                 'override' => 0,
 221                 'default' => [1]},
 222
 223         # Enable grep search, which will list the files in currently selected
 224         # tree containing the given string. Enabled by default. This can be
 225         # potentially CPU-intensive, of course.
 226
 227         # To enable system wide have in $GITWEB_CONFIG
 228         # $feature{'grep'}{'default'} = [1];
 229         # To have project specific config enable override in $GITWEB_CONFIG
 230         # $feature{'grep'}{'override'} = 1;
 231         # and in project config gitweb.grep = 0|1;
 232         'grep' => {
 233                 'override' => 0,
 234                 'default' => [1]},
 235
 236         # Enable the pickaxe search, which will list the commits that modified
 237         # a given string in a file. This can be practical and quite faster
 238         # alternative to 'blame', but still potentially CPU-intensive.
 239
 240         # To enable system wide have in $GITWEB_CONFIG
 241         # $feature{'pickaxe'}{'default'} = [1];
 242         # To have project specific config enable override in $GITWEB_CONFIG
 243         # $feature{'pickaxe'}{'override'} = 1;
 244         # and in project config gitweb.pickaxe = 0|1;
 245         'pickaxe' => {
 246                 'sub' => \&feature_pickaxe,
 247                 'override' => 0,
 248                 'default' => [1]},
 249
 250         # Make gitweb use an alternative format of the URLs which can be
 251         # more readable and natural-looking: project name is embedded
 252         # directly in the path and the query string contains other
 253         # auxiliary information. All gitweb installations recognize
 254         # URL in either format; this configures in which formats gitweb
 255         # generates links.
 256
 257         # To enable system wide have in $GITWEB_CONFIG
 258         # $feature{'pathinfo'}{'default'} = [1];
 259         # Project specific override is not supported.
 260
 261         # Note that you will need to change the default location of CSS,
 262         # favicon, logo and possibly other files to an absolute URL. Also,
 263         # if gitweb.cgi serves as your indexfile, you will need to force
 264         # $my_uri to contain the script name in your $GITWEB_CONFIG.
 265         'pathinfo' => {
 266                 'override' => 0,
 267                 'default' => [0]},
 268
 269         # Make gitweb consider projects in project root subdirectories
 270         # to be forks of existing projects. Given project $projname.git,
 271         # projects matching $projname/*.git will not be shown in the main
 272         # projects list, instead a '+' mark will be added to $projname
 273         # there and a 'forks' view will be enabled for the project, listing
 274         # all the forks. If project list is taken from a file, forks have
 275         # to be listed after the main project.
 276
 277         # To enable system wide have in $GITWEB_CONFIG
 278         # $feature{'forks'}{'default'} = [1];
 279         # Project specific override is not supported.
 280         'forks' => {
 281                 'override' => 0,
 282                 'default' => [0]},
 283 );
 284
 285 sub gitweb_check_feature {
 286         my ($name) = @_;
 287         return unless exists $feature{$name};
 288         my ($sub, $override, @defaults) = (
 289                 $feature{$name}{'sub'},
 290                 $feature{$name}{'override'},
 291                 @{$feature{$name}{'default'}});
 292         if (!$override) { return @defaults; }
 293         if (!defined $sub) {
 294                 warn "feature $name is not overrideable";
 295                 return @defaults;
 296         }
 297         return $sub->(@defaults);
 298 }
 299
 300 sub feature_blame {
 301         my ($val) = git_get_project_config('blame', '--bool');
 302
 303         if ($val eq 'true') {
 304                 return 1;
 305         } elsif ($val eq 'false') {
 306                 return 0;
 307         }
 308
 309         return $_[0];
 310 }
 311
 312 sub feature_snapshot {
 313         my (@fmts) = @_;
 314
 315         my ($val) = git_get_project_config('snapshot');
 316
 317         if ($val) {
 318                 @fmts = ($val eq 'none' ? () : split /\s*[,\s]\s*/, $val);
 319         }
 320
 321         return @fmts;
 322 }
 323
 324 sub feature_grep {
 325         my ($val) = git_get_project_config('grep', '--bool');
 326
 327         if ($val eq 'true') {
 328                 return (1);
 329         } elsif ($val eq 'false') {
 330                 return (0);
 331         }
 332
 333         return ($_[0]);
 334 }
 335
 336 sub feature_pickaxe {
 337         my ($val) = git_get_project_config('pickaxe', '--bool');
 338
 339         if ($val eq 'true') {
 340                 return (1);
 341         } elsif ($val eq 'false') {
 342                 return (0);
 343         }
 344
 345         return ($_[0]);
 346 }
 347
 348 # checking HEAD file with -e is fragile if the repository was
 349 # initialized long time ago (i.e. symlink HEAD) and was pack-ref'ed
 350 # and then pruned.
 351 sub check_head_link {
 352         my ($dir) = @_;
 353         my $headfile = "$dir/HEAD";
 354         return ((-e $headfile) ||
 355                 (-l $headfile && readlink($headfile) =~ /^refs\/heads\//));
 356 }
 357
 358 sub check_export_ok {
 359         my ($dir) = @_;
 360         return (check_head_link($dir) &&
 361                 (!$export_ok || -e "$dir/$export_ok"));
 362 }
 363
 364 # process alternate names for backward compatibility
 365 # filter out unsupported (unknown) snapshot formats
 366 sub filter_snapshot_fmts {
 367         my @fmts = @_;
 368
 369         @fmts = map {
 370                 exists $known_snapshot_format_aliases{$_} ?
 371                        $known_snapshot_format_aliases{$_} : $_} @fmts;
 372         @fmts = grep(exists $known_snapshot_formats{$_}, @fmts);
 373
 374 }
 375
 376 our $GITWEB_CONFIG = $ENV{'GITWEB_CONFIG'} || "/etc/gitweb.conf";
 377 do $GITWEB_CONFIG if -e $GITWEB_CONFIG;
 378
 379 # version of the core git binary
 380 our $git_version = qx($GIT --version) =~ m/git version (.*)$/ ? $1 : "unknown";
 381
 382 $projects_list ||= $projectroot;
 383
 384 # ======================================================================
 385 # input validation and dispatch
 386 our $action = $cgi->param('a');
 387 if (defined $action) {
 388         if ($action =~ m/[^0-9a-zA-Z\.\-_]/) {
 389                 die_error(undef, "Invalid action parameter");
 390         }
 391 }
 392
 393 # parameters which are pathnames
 394 our $project = $cgi->param('p');
 395 if (defined $project) {
 396         if (!validate_pathname($project) ||
 397             !(-d "$projectroot/$project") ||
 398             !check_head_link("$projectroot/$project") ||
 399             ($export_ok && !(-e "$projectroot/$project/$export_ok")) ||
 400             ($strict_export && !project_in_list($project))) {
 401                 undef $project;
 402                 die_error(undef, "No such project");
 403         }
 404 }
 405
 406 our $file_name = $cgi->param('f');
 407 if (defined $file_name) {
 408         if (!validate_pathname($file_name)) {
 409                 die_error(undef, "Invalid file parameter");
 410         }
 411 }
 412
 413 our $file_parent = $cgi->param('fp');
 414 if (defined $file_parent) {
 415         if (!validate_pathname($file_parent)) {
 416                 die_error(undef, "Invalid file parent parameter");
 417         }
 418 }
 419
 420 # parameters which are refnames
 421 our $hash = $cgi->param('h');
 422 if (defined $hash) {
 423         if (!validate_refname($hash)) {
 424                 die_error(undef, "Invalid hash parameter");
 425         }
 426 }
 427
 428 our $hash_parent = $cgi->param('hp');
 429 if (defined $hash_parent) {
 430         if (!validate_refname($hash_parent)) {
 431                 die_error(undef, "Invalid hash parent parameter");
 432         }
 433 }
 434
 435 our $hash_base = $cgi->param('hb');
 436 if (defined $hash_base) {
 437         if (!validate_refname($hash_base)) {
 438                 die_error(undef, "Invalid hash base parameter");
 439         }
 440 }
 441
 442 my %allowed_options = (
 443         "--no-merges" => [ qw(rss atom log shortlog history) ],
 444 );
 445
 446 our @extra_options = $cgi->param('opt');
 447 if (defined @extra_options) {
 448         foreach my $opt (@extra_options) {
 449                 if (not exists $allowed_options{$opt}) {
 450                         die_error(undef, "Invalid option parameter");
 451                 }
 452                 if (not grep(/^$action$/, @{$allowed_options{$opt}})) {
 453                         die_error(undef, "Invalid option parameter for this action");
 454                 }
 455         }
 456 }
 457
 458 our $hash_parent_base = $cgi->param('hpb');
 459 if (defined $hash_parent_base) {
 460         if (!validate_refname($hash_parent_base)) {
 461                 die_error(undef, "Invalid hash parent base parameter");
 462         }
 463 }
 464
 465 # other parameters
 466 our $page = $cgi->param('pg');
 467 if (defined $page) {
 468         if ($page =~ m/[^0-9]/) {
 469                 die_error(undef, "Invalid page parameter");
 470         }
 471 }
 472
 473 our $searchtype = $cgi->param('st');
 474 if (defined $searchtype) {
 475         if ($searchtype =~ m/[^a-z]/) {
 476                 die_error(undef, "Invalid searchtype parameter");
 477         }
 478 }
 479
 480 our $searchtext = $cgi->param('s');
 481 our $search_regexp;
 482 if (defined $searchtext) {
 483         if (length($searchtext) < 2) {
 484                 die_error(undef, "At least two characters are required for search parameter");
 485         }
 486         $search_regexp = quotemeta $searchtext;
 487 }
 488
 489 # now read PATH_INFO and use it as alternative to parameters
 490 sub evaluate_path_info {
 491         return if defined $project;
 492         my $path_info = $ENV{"PATH_INFO"};
 493         return if !$path_info;
 494         $path_info =~ s,^/+,,;
 495         return if !$path_info;
 496         # find which part of PATH_INFO is project
 497         $project = $path_info;
 498         $project =~ s,/+$,,;
 499         while ($project && !check_head_link("$projectroot/$project")) {
 500                 $project =~ s,/*[^/]*$,,;
 501         }
 502         # validate project
 503         $project = validate_pathname($project);
 504         if (!$project ||
 505             ($export_ok && !-e "$projectroot/$project/$export_ok") ||
 506             ($strict_export && !project_in_list($project))) {
 507                 undef $project;
 508                 return;
 509         }
 510         # do not change any parameters if an action is given using the query string
 511         return if $action;
 512         $path_info =~ s,^$project/*,,;
 513         my ($refname, $pathname) = split(/:/, $path_info, 2);
 514         if (defined $pathname) {
 515                 # we got "project.git/branch:filename" or "project.git/branch:dir/"
 516                 # we could use git_get_type(branch:pathname), but it needs $git_dir
 517                 $pathname =~ s,^/+,,;
 518                 if (!$pathname || substr($pathname, -1) eq "/") {
 519                         $action  ||= "tree";
 520                         $pathname =~ s,/$,,;
 521                 } else {
 522                         $action  ||= "blob_plain";
 523                 }
 524                 $hash_base ||= validate_refname($refname);
 525                 $file_name ||= validate_pathname($pathname);
 526         } elsif (defined $refname) {
 527                 # we got "project.git/branch"
 528                 $action ||= "shortlog";
 529                 $hash   ||= validate_refname($refname);
 530         }
 531 }
 532 evaluate_path_info();
 533
 534 # path to the current git repository
 535 our $git_dir;
 536 $git_dir = "$projectroot/$project" if $project;
 537
 538 # dispatch
 539 my %actions = (
 540         "blame" => \&git_blame2,
 541         "blobdiff" => \&git_blobdiff,
 542         "blobdiff_plain" => \&git_blobdiff_plain,
 543         "blob" => \&git_blob,
 544         "blob_plain" => \&git_blob_plain,
 545         "commitdiff" => \&git_commitdiff,
 546         "commitdiff_plain" => \&git_commitdiff_plain,
 547         "commit" => \&git_commit,
 548         "forks" => \&git_forks,
 549         "heads" => \&git_heads,
 550         "history" => \&git_history,
 551         "log" => \&git_log,
 552         "rss" => \&git_rss,
 553         "atom" => \&git_atom,
 554         "search" => \&git_search,
 555         "search_help" => \&git_search_help,
 556         "shortlog" => \&git_shortlog,
 557         "summary" => \&git_summary,
 558         "tag" => \&git_tag,
 559         "tags" => \&git_tags,
 560         "tree" => \&git_tree,
 561         "snapshot" => \&git_snapshot,
 562         "object" => \&git_object,
 563         # those below don't need $project
 564         "opml" => \&git_opml,
 565         "project_list" => \&git_project_list,
 566         "project_index" => \&git_project_index,
 567 );
 568
 569 if (!defined $action) {
 570         if (defined $hash) {
 571                 $action = git_get_type($hash);
 572         } elsif (defined $hash_base && defined $file_name) {
 573                 $action = git_get_type("$hash_base:$file_name");
 574         } elsif (defined $project) {
 575                 $action = 'summary';
 576         } else {
 577                 $action = 'project_list';
 578         }
 579 }
 580 if (!defined($actions{$action})) {
 581         die_error(undef, "Unknown action");
 582 }
 583 if ($action !~ m/^(opml|project_list|project_index)$/ &&
 584     !$project) {
 585         die_error(undef, "Project needed");
 586 }
 587 $actions{$action}->();
 588 exit;
 589
 590 ## ======================================================================
 591 ## action links
 592
 593 sub href(%) {
 594         my %params = @_;
 595         # default is to use -absolute url() i.e. $my_uri
 596         my $href = $params{-full} ? $my_url : $my_uri;
 597
 598         # XXX: Warning: If you touch this, check the search form for updating,
 599         # too.
 600
 601         my @mapping = (
 602                 project => "p",
 603                 action => "a",
 604                 file_name => "f",
 605                 file_parent => "fp",
 606                 hash => "h",
 607                 hash_parent => "hp",
 608                 hash_base => "hb",
 609                 hash_parent_base => "hpb",
 610                 page => "pg",
 611                 order => "o",
 612                 searchtext => "s",
 613                 searchtype => "st",
 614                 snapshot_format => "sf",
 615                 extra_options => "opt",
 616         );
 617         my %mapping = @mapping;
 618
 619         if ($params{-replay}) {
 620                 while (my ($name, $symbol) = each %mapping) {
 621                         if (!exists $params{$name}) {
 622                                 # to allow for multivalued params we use arrayref form
 623                                 $params{$name} = [ $cgi->param($symbol) ];
 624                         }
 625                 }
 626         }
 627
 628         $params{'project'} = $project unless exists $params{'project'};
 629
 630         my ($use_pathinfo) = gitweb_check_feature('pathinfo');
 631         if ($use_pathinfo) {
 632                 # use PATH_INFO for project name
 633                 $href .= "/$params{'project'}" if defined $params{'project'};
 634                 delete $params{'project'};
 635
 636                 # Summary just uses the project path URL
 637                 if (defined $params{'action'} && $params{'action'} eq 'summary') {
 638                         delete $params{'action'};
 639                 }
 640         }
 641
 642         # now encode the parameters explicitly
 643         my @result = ();
 644         for (my $i = 0; $i < @mapping; $i += 2) {
 645                 my ($name, $symbol) = ($mapping[$i], $mapping[$i+1]);
 646                 if (defined $params{$name}) {
 647                         if (ref($params{$name}) eq "ARRAY") {
 648                                 foreach my $par (@{$params{$name}}) {
 649                                         push @result, $symbol . "=" . esc_param($par);
 650                                 }
 651                         } else {
 652                                 push @result, $symbol . "=" . esc_param($params{$name});
 653                         }
 654                 }
 655         }
 656         $href .= "?" . join(';', @result) if scalar @result;
 657
 658         return $href;
 659 }
 660
 661
 662 ## ======================================================================
 663 ## validation, quoting/unquoting and escaping
 664
 665 sub validate_pathname {
 666         my $input = shift || return undef;
 667
 668         # no '.' or '..' as elements of path, i.e. no '.' nor '..'
 669         # at the beginning, at the end, and between slashes.
 670         # also this catches doubled slashes
 671         if ($input =~ m!(^|/)(|\.|\.\.)(/|$)!) {
 672                 return undef;
 673         }
 674         # no null characters
 675         if ($input =~ m!\0!) {
 676                 return undef;
 677         }
 678         return $input;
 679 }
 680
 681 sub validate_refname {
 682         my $input = shift || return undef;
 683
 684         # textual hashes are O.K.
 685         if ($input =~ m/^[0-9a-fA-F]{40}$/) {
 686                 return $input;
 687         }
 688         # it must be correct pathname
 689         $input = validate_pathname($input)
 690                 or return undef;
 691         # restrictions on ref name according to git-check-ref-format
 692         if ($input =~ m!(/\.|\.\.|[\000-\040\177 ~^:?*\[]|/$)!) {
 693                 return undef;
 694         }
 695         return $input;
 696 }
 697
 698 # decode sequences of octets in utf8 into Perl's internal form,
 699 # which is utf-8 with utf8 flag set if needed.  gitweb writes out
 700 # in utf-8 thanks to "binmode STDOUT, ':utf8'" at beginning
 701 sub to_utf8 {
 702         my $str = shift;
 703         if (utf8::valid($str)) {
 704                 utf8::decode($str);
 705                 return $str;
 706         } else {
 707                 return decode($fallback_encoding, $str, Encode::FB_DEFAULT);
 708         }
 709 }
 710
 711 # quote unsafe chars, but keep the slash, even when it's not
 712 # correct, but quoted slashes look too horrible in bookmarks
 713 sub esc_param {
 714         my $str = shift;
 715         $str =~ s/([^A-Za-z0-9\-_.~()\/:@])/sprintf("%%%02X", ord($1))/eg;
 716         $str =~ s/\+/%2B/g;
 717         $str =~ s/ /\+/g;
 718         return $str;
 719 }
 720
 721 # quote unsafe chars in whole URL, so some charactrs cannot be quoted
 722 sub esc_url {
 723         my $str = shift;
 724         $str =~ s/([^A-Za-z0-9\-_.~();\/;?:@&=])/sprintf("%%%02X", ord($1))/eg;
 725         $str =~ s/\+/%2B/g;
 726         $str =~ s/ /\+/g;
 727         return $str;
 728 }
 729
 730 # replace invalid utf8 character with SUBSTITUTION sequence
 731 sub esc_html ($;%) {
 732         my $str = shift;
 733         my %opts = @_;
 734
 735         $str = to_utf8($str);
 736         $str = $cgi->escapeHTML($str);
 737         if ($opts{'-nbsp'}) {
 738                 $str =~ s/ /&nbsp;/g;
 739         }
 740         $str =~ s|([[:cntrl:]])|(($1 ne "\t") ? quot_cec($1) : $1)|eg;
 741         return $str;
 742 }
 743
 744 # quote control characters and escape filename to HTML
 745 sub esc_path {
 746         my $str = shift;
 747         my %opts = @_;
 748
 749         $str = to_utf8($str);
 750         $str = $cgi->escapeHTML($str);
 751         if ($opts{'-nbsp'}) {
 752                 $str =~ s/ /&nbsp;/g;
 753         }
 754         $str =~ s|([[:cntrl:]])|quot_cec($1)|eg;
 755         return $str;
 756 }
 757
 758 # Make control characters "printable", using character escape codes (CEC)
 759 sub quot_cec {
 760         my $cntrl = shift;
 761         my %es = ( # character escape codes, aka escape sequences
 762                    "\t" => '\t',   # tab            (HT)
 763                    "\n" => '\n',   # line feed      (LF)
 764                    "\r" => '\r',   # carrige return (CR)
 765                    "\f" => '\f',   # form feed      (FF)
 766                    "\b" => '\b',   # backspace      (BS)
 767                    "\a" => '\a',   # alarm (bell)   (BEL)
 768                    "\e" => '\e',   # escape         (ESC)
 769                    "\013" => '\v', # vertical tab   (VT)
 770                    "\000" => '\0', # nul character  (NUL)
 771                    );
 772         my $chr = ( (exists $es{$cntrl})
 773                     ? $es{$cntrl}
 774                     : sprintf('\%03o', ord($cntrl)) );
 775         return "<span class=\"cntrl\">$chr</span>";
 776 }
 777
 778 # Alternatively use unicode control pictures codepoints,
 779 # Unicode "printable representation" (PR)
 780 sub quot_upr {
 781         my $cntrl = shift;
 782         my $chr = sprintf('&#%04d;', 0x2400+ord($cntrl));
 783         return "<span class=\"cntrl\">$chr</span>";
 784 }
 785
 786 # git may return quoted and escaped filenames
 787 sub unquote {
 788         my $str = shift;
 789
 790         sub unq {
 791                 my $seq = shift;
 792                 my %es = ( # character escape codes, aka escape sequences
 793                         't' => "\t",   # tab            (HT, TAB)
 794                         'n' => "\n",   # newline        (NL)
 795                         'r' => "\r",   # return         (CR)
 796                         'f' => "\f",   # form feed      (FF)
 797                         'b' => "\b",   # backspace      (BS)
 798                         'a' => "\a",   # alarm (bell)   (BEL)
 799                         'e' => "\e",   # escape         (ESC)
 800                         'v' => "\013", # vertical tab   (VT)
 801                 );
 802
 803                 if ($seq =~ m/^[0-7]{1,3}$/) {
 804                         # octal char sequence
 805                         return chr(oct($seq));
 806                 } elsif (exists $es{$seq}) {
 807                         # C escape sequence, aka character escape code
 808                         return $es{$seq}
 809                 }
 810                 # quoted ordinary character
 811                 return $seq;
 812         }
 813
 814         if ($str =~ m/^"(.*)"$/) {
 815                 # needs unquoting
 816                 $str = $1;
 817                 $str =~ s/\\([^0-7]|[0-7]{1,3})/unq($1)/eg;
 818         }
 819         return $str;
 820 }
 821
 822 # escape tabs (convert tabs to spaces)
 823 sub untabify {
 824         my $line = shift;
 825
 826         while ((my $pos = index($line, "\t")) != -1) {
 827                 if (my $count = (8 - ($pos % 8))) {
 828                         my $spaces = ' ' x $count;
 829                         $line =~ s/\t/$spaces/;
 830                 }
 831         }
 832
 833         return $line;
 834 }
 835
 836 sub project_in_list {
 837         my $project = shift;
 838         my @list = git_get_projects_list();
 839         return @list && scalar(grep { $_->{'path'} eq $project } @list);
 840 }
 841
 842 ## ----------------------------------------------------------------------
 843 ## HTML aware string manipulation
 844
 845 sub chop_str {
 846         my $str = shift;
 847         my $len = shift;
 848         my $add_len = shift || 10;
 849
 850         # allow only $len chars, but don't cut a word if it would fit in $add_len
 851         # if it doesn't fit, cut it if it's still longer than the dots we would add
 852         $str =~ m/^(.{0,$len}[^ \/\-_:\.@]{0,$add_len})(.*)/;
 853         my $body = $1;
 854         my $tail = $2;
 855         if (length($tail) > 4) {
 856                 $tail = " ...";
 857                 $body =~ s/&[^;]*$//; # remove chopped character entities
 858         }
 859         return "$body$tail";
 860 }
 861
 862 # takes the same arguments as chop_str, but also wraps a <span> around the
 863 # result with a title attribute if it does get chopped. Additionally, the
 864 # string is HTML-escaped.
 865 sub chop_and_escape_str {
 866         my $str = shift;
 867         my $len = shift;
 868         my $add_len = shift || 10;
 869
 870         my $chopped = chop_str($str, $len, $add_len);
 871         if ($chopped eq $str) {
 872                 return esc_html($chopped);
 873         } else {
 874                 return qq{<span title="} . esc_html($str) . qq{">} .
 875                         esc_html($chopped) . qq{</span>};
 876         }
 877 }
 878
 879 ## ----------------------------------------------------------------------
 880 ## functions returning short strings
 881
 882 # CSS class for given age value (in seconds)
 883 sub age_class {
 884         my $age = shift;
 885
 886         if (!defined $age) {
 887                 return "noage";
 888         } elsif ($age < 60*60*2) {
 889                 return "age0";
 890         } elsif ($age < 60*60*24*2) {
 891                 return "age1";
 892         } else {
 893                 return "age2";
 894         }
 895 }
 896
 897 # convert age in seconds to "nn units ago" string
 898 sub age_string {
 899         my $age = shift;
 900         my $age_str;
 901
 902         if ($age > 60*60*24*365*2) {
 903                 $age_str = (int $age/60/60/24/365);
 904                 $age_str .= " years ago";
 905         } elsif ($age > 60*60*24*(365/12)*2) {
 906                 $age_str = int $age/60/60/24/(365/12);
 907                 $age_str .= " months ago";
 908         } elsif ($age > 60*60*24*7*2) {
 909                 $age_str = int $age/60/60/24/7;
 910                 $age_str .= " weeks ago";
 911         } elsif ($age > 60*60*24*2) {
 912                 $age_str = int $age/60/60/24;
 913                 $age_str .= " days ago";
 914         } elsif ($age > 60*60*2) {
 915                 $age_str = int $age/60/60;
 916                 $age_str .= " hours ago";
 917         } elsif ($age > 60*2) {
 918                 $age_str = int $age/60;
 919                 $age_str .= " min ago";
 920         } elsif ($age > 2) {
 921                 $age_str = int $age;
 922                 $age_str .= " sec ago";
 923         } else {
 924                 $age_str .= " right now";
 925         }
 926         return $age_str;
 927 }
 928
 929 use constant {
 930         S_IFINVALID => 0030000,
 931         S_IFGITLINK => 0160000,
 932 };
 933
 934 # submodule/subproject, a commit object reference
 935 sub S_ISGITLINK($) {
 936         my $mode = shift;
 937
 938         return (($mode & S_IFMT) == S_IFGITLINK)
 939 }
 940
 941 # convert file mode in octal to symbolic file mode string
 942 sub mode_str {
 943         my $mode = oct shift;
 944
 945         if (S_ISGITLINK($mode)) {
 946                 return 'm---------';
 947         } elsif (S_ISDIR($mode & S_IFMT)) {
 948                 return 'drwxr-xr-x';
 949         } elsif (S_ISLNK($mode)) {
 950                 return 'lrwxrwxrwx';
 951         } elsif (S_ISREG($mode)) {
 952                 # git cares only about the executable bit
 953                 if ($mode & S_IXUSR) {
 954                         return '-rwxr-xr-x';
 955                 } else {
 956                         return '-rw-r--r--';
 957                 };
 958         } else {
 959                 return '----------';
 960         }
 961 }
 962
 963 # convert file mode in octal to file type string
 964 sub file_type {
 965         my $mode = shift;
 966
 967         if ($mode !~ m/^[0-7]+$/) {
 968                 return $mode;
 969         } else {
 970                 $mode = oct $mode;
 971         }
 972
 973         if (S_ISGITLINK($mode)) {
 974                 return "submodule";
 975         } elsif (S_ISDIR($mode & S_IFMT)) {
 976                 return "directory";
 977         } elsif (S_ISLNK($mode)) {
 978                 return "symlink";
 979         } elsif (S_ISREG($mode)) {
 980                 return "file";
 981         } else {
 982                 return "unknown";
 983         }
 984 }
 985
 986 # convert file mode in octal to file type description string
 987 sub file_type_long {
 988         my $mode = shift;
 989
 990         if ($mode !~ m/^[0-7]+$/) {
 991                 return $mode;
 992         } else {
 993                 $mode = oct $mode;
 994         }
 995
 996         if (S_ISGITLINK($mode)) {
 997                 return "submodule";
 998         } elsif (S_ISDIR($mode & S_IFMT)) {
 999                 return "directory";
1000         } elsif (S_ISLNK($mode)) {
1001                 return "symlink";
1002         } elsif (S_ISREG($mode)) {
1003                 if ($mode & S_IXUSR) {
1004                         return "executable";
1005                 } else {
1006                         return "file";
1007                 };
1008         } else {
1009                 return "unknown";
1010         }
1011 }
1012
1013
1014 ## ----------------------------------------------------------------------
1015 ## functions returning short HTML fragments, or transforming HTML fragments
1016 ## which don't belong to other sections
1017
1018 # format line of commit message.
1019 sub format_log_line_html {
1020         my $line = shift;
1021
1022         $line = esc_html($line, -nbsp=>1);
1023         if ($line =~ m/([0-9a-fA-F]{8,40})/) {
1024                 my $hash_text = $1;
1025                 my $link =
1026                         $cgi->a({-href => href(action=>"object", hash=>$hash_text),
1027                                 -class => "text"}, $hash_text);
1028                 $line =~ s/$hash_text/$link/;
1029         }
1030         return $line;
1031 }
1032
1033 # format marker of refs pointing to given object
1034 sub format_ref_marker {
1035         my ($refs, $id) = @_;
1036         my $markers = '';
1037
1038         if (defined $refs->{$id}) {
1039                 foreach my $ref (@{$refs->{$id}}) {
1040                         my ($type, $name) = qw();
1041                         # e.g. tags/v2.6.11 or heads/next
1042                         if ($ref =~ m!^(.*?)s?/(.*)$!) {
1043                                 $type = $1;
1044                                 $name = $2;
1045                         } else {
1046                                 $type = "ref";
1047                                 $name = $ref;
1048                         }
1049
1050                         $markers .= " <span class=\"$type\" title=\"$ref\">" .
1051                                     esc_html($name) . "</span>";
1052                 }
1053         }
1054
1055         if ($markers) {
1056                 return ' <span class="refs">'. $markers . '</span>';
1057         } else {
1058                 return "";
1059         }
1060 }
1061
1062 # format, perhaps shortened and with markers, title line
1063 sub format_subject_html {
1064         my ($long, $short, $href, $extra) = @_;
1065         $extra = '' unless defined($extra);
1066
1067         if (length($short) < length($long)) {
1068                 return $cgi->a({-href => $href, -class => "list subject",
1069                                 -title => to_utf8($long)},
1070                        esc_html($short) . $extra);
1071         } else {
1072                 return $cgi->a({-href => $href, -class => "list subject"},
1073                        esc_html($long)  . $extra);
1074         }
1075 }
1076
1077 # format git diff header line, i.e. "diff --(git|combined|cc) ..."
1078 sub format_git_diff_header_line {
1079         my $line = shift;
1080         my $diffinfo = shift;
1081         my ($from, $to) = @_;
1082
1083         if ($diffinfo->{'nparents'}) {
1084                 # combined diff
1085                 $line =~ s!^(diff (.*?) )"?.*$!$1!;
1086                 if ($to->{'href'}) {
1087                         $line .= $cgi->a({-href => $to->{'href'}, -class => "path"},
1088                                          esc_path($to->{'file'}));
1089                 } else { # file was deleted (no href)
1090                         $line .= esc_path($to->{'file'});
1091                 }
1092         } else {
1093                 # "ordinary" diff
1094                 $line =~ s!^(diff (.*?) )"?a/.*$!$1!;
1095                 if ($from->{'href'}) {
1096                         $line .= $cgi->a({-href => $from->{'href'}, -class => "path"},
1097                                          'a/' . esc_path($from->{'file'}));
1098                 } else { # file was added (no href)
1099                         $line .= 'a/' . esc_path($from->{'file'});
1100                 }
1101                 $line .= ' ';
1102                 if ($to->{'href'}) {
1103                         $line .= $cgi->a({-href => $to->{'href'}, -class => "path"},
1104                                          'b/' . esc_path($to->{'file'}));
1105                 } else { # file was deleted
1106                         $line .= 'b/' . esc_path($to->{'file'});
1107                 }
1108         }
1109
1110         return "<div class=\"diff header\">$line</div>\n";
1111 }
1112
1113 # format extended diff header line, before patch itself
1114 sub format_extended_diff_header_line {
1115         my $line = shift;
1116         my $diffinfo = shift;
1117         my ($from, $to) = @_;
1118
1119         # match <path>
1120         if ($line =~ s!^((copy|rename) from ).*$!$1! && $from->{'href'}) {
1121                 $line .= $cgi->a({-href=>$from->{'href'}, -class=>"path"},
1122                                        esc_path($from->{'file'}));
1123         }
1124         if ($line =~ s!^((copy|rename) to ).*$!$1! && $to->{'href'}) {
1125                 $line .= $cgi->a({-href=>$to->{'href'}, -class=>"path"},
1126                                  esc_path($to->{'file'}));
1127         }
1128         # match single <mode>
1129         if ($line =~ m/\s(\d{6})$/) {
1130                 $line .= '<span class="info"> (' .
1131                          file_type_long($1) .
1132                          ')</span>';
1133         }
1134         # match <hash>
1135         if ($line =~ m/^index [0-9a-fA-F]{40},[0-9a-fA-F]{40}/) {
1136                 # can match only for combined diff
1137                 $line = 'index ';
1138                 for (my $i = 0; $i < $diffinfo->{'nparents'}; $i++) {
1139                         if ($from->{'href'}[$i]) {
1140                                 $line .= $cgi->a({-href=>$from->{'href'}[$i],
1141                                                   -class=>"hash"},
1142                                                  substr($diffinfo->{'from_id'}[$i],0,7));
1143                         } else {
1144                                 $line .= '0' x 7;
1145                         }
1146                         # separator
1147                         $line .= ',' if ($i < $diffinfo->{'nparents'} - 1);
1148                 }
1149                 $line .= '..';
1150                 if ($to->{'href'}) {
1151                         $line .= $cgi->a({-href=>$to->{'href'}, -class=>"hash"},
1152                                          substr($diffinfo->{'to_id'},0,7));
1153                 } else {
1154                         $line .= '0' x 7;
1155                 }
1156
1157         } elsif ($line =~ m/^index [0-9a-fA-F]{40}..[0-9a-fA-F]{40}/) {
1158                 # can match only for ordinary diff
1159                 my ($from_link, $to_link);
1160                 if ($from->{'href'}) {
1161                         $from_link = $cgi->a({-href=>$from->{'href'}, -class=>"hash"},
1162                                              substr($diffinfo->{'from_id'},0,7));
1163                 } else {
1164                         $from_link = '0' x 7;
1165                 }
1166                 if ($to->{'href'}) {
1167                         $to_link = $cgi->a({-href=>$to->{'href'}, -class=>"hash"},
1168                                            substr($diffinfo->{'to_id'},0,7));
1169                 } else {
1170                         $to_link = '0' x 7;
1171                 }
1172                 my ($from_id, $to_id) = ($diffinfo->{'from_id'}, $diffinfo->{'to_id'});
1173                 $line =~ s!$from_id\.\.$to_id!$from_link..$to_link!;
1174         }
1175
1176         return $line . "<br/>\n";
1177 }
1178
1179 # format from-file/to-file diff header
1180 sub format_diff_from_to_header {
1181         my ($from_line, $to_line, $diffinfo, $from, $to, @parents) = @_;
1182         my $line;
1183         my $result = '';
1184
1185         $line = $from_line;
1186         #assert($line =~ m/^---/) if DEBUG;
1187         # no extra formatting for "^--- /dev/null"
1188         if (! $diffinfo->{'nparents'}) {
1189                 # ordinary (single parent) diff
1190                 if ($line =~ m!^--- "?a/!) {
1191                         if ($from->{'href'}) {
1192                                 $line = '--- a/' .
1193                                         $cgi->a({-href=>$from->{'href'}, -class=>"path"},
1194                                                 esc_path($from->{'file'}));
1195                         } else {
1196                                 $line = '--- a/' .
1197                                         esc_path($from->{'file'});
1198                         }
1199                 }
1200                 $result .= qq!<div class="diff from_file">$line</div>\n!;
1201
1202         } else {
1203                 # combined diff (merge commit)
1204                 for (my $i = 0; $i < $diffinfo->{'nparents'}; $i++) {
1205                         if ($from->{'href'}[$i]) {
1206                                 $line = '--- ' .
1207                                         $cgi->a({-href=>href(action=>"blobdiff",
1208                                                              hash_parent=>$diffinfo->{'from_id'}[$i],
1209                                                              hash_parent_base=>$parents[$i],
1210                                                              file_parent=>$from->{'file'}[$i],
1211                                                              hash=>$diffinfo->{'to_id'},
1212                                                              hash_base=>$hash,
1213                                                              file_name=>$to->{'file'}),
1214                                                  -class=>"path",
1215                                                  -title=>"diff" . ($i+1)},
1216                                                 $i+1) .
1217                                         '/' .
1218                                         $cgi->a({-href=>$from->{'href'}[$i], -class=>"path"},
1219                                                 esc_path($from->{'file'}[$i]));
1220                         } else {
1221                                 $line = '--- /dev/null';
1222                         }
1223                         $result .= qq!<div class="diff from_file">$line</div>\n!;
1224                 }
1225         }
1226
1227         $line = $to_line;
1228         #assert($line =~ m/^\+\+\+/) if DEBUG;
1229         # no extra formatting for "^+++ /dev/null"
1230         if ($line =~ m!^\+\+\+ "?b/!) {
1231                 if ($to->{'href'}) {
1232                         $line = '+++ b/' .
1233                                 $cgi->a({-href=>$to->{'href'}, -class=>"path"},
1234                                         esc_path($to->{'file'}));
1235                 } else {
1236                         $line = '+++ b/' .
1237                                 esc_path($to->{'file'});
1238                 }
1239         }
1240         $result .= qq!<div class="diff to_file">$line</div>\n!;
1241
1242         return $result;
1243 }
1244
1245 # create note for patch simplified by combined diff
1246 sub format_diff_cc_simplified {
1247         my ($diffinfo, @parents) = @_;
1248         my $result = '';
1249
1250         $result .= "<div class=\"diff header\">" .
1251                    "diff --cc ";
1252         if (!is_deleted($diffinfo)) {
1253                 $result .= $cgi->a({-href => href(action=>"blob",
1254                                                   hash_base=>$hash,
1255                                                   hash=>$diffinfo->{'to_id'},
1256                                                   file_name=>$diffinfo->{'to_file'}),
1257                                     -class => "path"},
1258                                    esc_path($diffinfo->{'to_file'}));
1259         } else {
1260                 $result .= esc_path($diffinfo->{'to_file'});
1261         }
1262         $result .= "</div>\n" . # class="diff header"
1263                    "<div class=\"diff nodifferences\">" .
1264                    "Simple merge" .
1265                    "</div>\n"; # class="diff nodifferences"
1266
1267         return $result;
1268 }
1269
1270 # format patch (diff) line (not to be used for diff headers)
1271 sub format_diff_line {
1272         my $line = shift;
1273         my ($from, $to) = @_;
1274         my $diff_class = "";
1275
1276         chomp $line;
1277
1278         if ($from && $to && ref($from->{'href'}) eq "ARRAY") {
1279                 # combined diff
1280                 my $prefix = substr($line, 0, scalar @{$from->{'href'}});
1281                 if ($line =~ m/^\@{3}/) {
1282                         $diff_class = " chunk_header";
1283                 } elsif ($line =~ m/^\\/) {
1284                         $diff_class = " incomplete";
1285                 } elsif ($prefix =~ tr/+/+/) {
1286                         $diff_class = " add";
1287                 } elsif ($prefix =~ tr/-/-/) {
1288                         $diff_class = " rem";
1289                 }
1290         } else {
1291                 # assume ordinary diff
1292                 my $char = substr($line, 0, 1);
1293                 if ($char eq '+') {
1294                         $diff_class = " add";
1295                 } elsif ($char eq '-') {
1296                         $diff_class = " rem";
1297                 } elsif ($char eq '@') {
1298                         $diff_class = " chunk_header";
1299                 } elsif ($char eq "\\") {
1300                         $diff_class = " incomplete";
1301                 }
1302         }
1303         $line = untabify($line);
1304         if ($from && $to && $line =~ m/^\@{2} /) {
1305                 my ($from_text, $from_start, $from_lines, $to_text, $to_start, $to_lines, $section) =
1306                         $line =~ m/^\@{2} (-(\d+)(?:,(\d+))?) (\+(\d+)(?:,(\d+))?) \@{2}(.*)$/;
1307
1308                 $from_lines = 0 unless defined $from_lines;
1309                 $to_lines   = 0 unless defined $to_lines;
1310
1311                 if ($from->{'href'}) {
1312                         $from_text = $cgi->a({-href=>"$from->{'href'}#l$from_start",
1313                                              -class=>"list"}, $from_text);
1314                 }
1315                 if ($to->{'href'}) {
1316                         $to_text   = $cgi->a({-href=>"$to->{'href'}#l$to_start",
1317                                              -class=>"list"}, $to_text);
1318                 }
1319                 $line = "<span class=\"chunk_info\">@@ $from_text $to_text @@</span>" .
1320                         "<span class=\"section\">" . esc_html($section, -nbsp=>1) . "</span>";
1321                 return "<div class=\"diff$diff_class\">$line</div>\n";
1322         } elsif ($from && $to && $line =~ m/^\@{3}/) {
1323                 my ($prefix, $ranges, $section) = $line =~ m/^(\@+) (.*?) \@+(.*)$/;
1324                 my (@from_text, @from_start, @from_nlines, $to_text, $to_start, $to_nlines);
1325
1326                 @from_text = split(' ', $ranges);
1327                 for (my $i = 0; $i < @from_text; ++$i) {
1328                         ($from_start[$i], $from_nlines[$i]) =
1329                                 (split(',', substr($from_text[$i], 1)), 0);
1330                 }
1331
1332                 $to_text   = pop @from_text;
1333                 $to_start  = pop @from_start;
1334                 $to_nlines = pop @from_nlines;
1335
1336                 $line = "<span class=\"chunk_info\">$prefix ";
1337                 for (my $i = 0; $i < @from_text; ++$i) {
1338                         if ($from->{'href'}[$i]) {
1339                                 $line .= $cgi->a({-href=>"$from->{'href'}[$i]#l$from_start[$i]",
1340                                                   -class=>"list"}, $from_text[$i]);
1341                         } else {
1342                                 $line .= $from_text[$i];
1343                         }
1344                         $line .= " ";
1345                 }
1346                 if ($to->{'href'}) {
1347                         $line .= $cgi->a({-href=>"$to->{'href'}#l$to_start",
1348                                           -class=>"list"}, $to_text);
1349                 } else {
1350                         $line .= $to_text;
1351                 }
1352                 $line .= " $prefix</span>" .
1353                          "<span class=\"section\">" . esc_html($section, -nbsp=>1) . "</span>";
1354                 return "<div class=\"diff$diff_class\">$line</div>\n";
1355         }
1356         return "<div class=\"diff$diff_class\">" . esc_html($line, -nbsp=>1) . "</div>\n";
1357 }
1358
1359 # Generates undef or something like "_snapshot_" or "snapshot (_tbz2_ _zip_)",
1360 # linked.  Pass the hash of the tree/commit to snapshot.
1361 sub format_snapshot_links {
1362         my ($hash) = @_;
1363         my @snapshot_fmts = gitweb_check_feature('snapshot');
1364         @snapshot_fmts = filter_snapshot_fmts(@snapshot_fmts);
1365         my $num_fmts = @snapshot_fmts;
1366         if ($num_fmts > 1) {
1367                 # A parenthesized list of links bearing format names.
1368                 # e.g. "snapshot (_tar.gz_ _zip_)"
1369                 return "snapshot (" . join(' ', map
1370                         $cgi->a({
1371                                 -href => href(
1372                                         action=>"snapshot",
1373                                         hash=>$hash,
1374                                         snapshot_format=>$_
1375                                 )
1376                         }, $known_snapshot_formats{$_}{'display'})
1377                 , @snapshot_fmts) . ")";
1378         } elsif ($num_fmts == 1) {
1379                 # A single "snapshot" link whose tooltip bears the format name.
1380                 # i.e. "_snapshot_"
1381                 my ($fmt) = @snapshot_fmts;
1382                 return
1383                         $cgi->a({
1384                                 -href => href(
1385                                         action=>"snapshot",
1386                                         hash=>$hash,
1387                                         snapshot_format=>$fmt
1388                                 ),
1389                                 -title => "in format: $known_snapshot_formats{$fmt}{'display'}"
1390                         }, "snapshot");
1391         } else { # $num_fmts == 0
1392                 return undef;
1393         }
1394 }
1395
1396 ## ----------------------------------------------------------------------
1397 ## git utility subroutines, invoking git commands
1398
1399 # returns path to the core git executable and the --git-dir parameter as list
1400 sub git_cmd {
1401         return $GIT, '--git-dir='.$git_dir;
1402 }
1403
1404 # returns path to the core git executable and the --git-dir parameter as string
1405 sub git_cmd_str {
1406         return join(' ', git_cmd());
1407 }
1408
1409 # get HEAD ref of given project as hash
1410 sub git_get_head_hash {
1411         my $project = shift;
1412         my $o_git_dir = $git_dir;
1413         my $retval = undef;
1414         $git_dir = "$projectroot/$project";
1415         if (open my $fd, "-|", git_cmd(), "rev-parse", "--verify", "HEAD") {
1416                 my $head = <$fd>;
1417                 close $fd;
1418                 if (defined $head && $head =~ /^([0-9a-fA-F]{40})$/) {
1419                         $retval = $1;
1420                 }
1421         }
1422         if (defined $o_git_dir) {
1423                 $git_dir = $o_git_dir;
1424         }
1425         return $retval;
1426 }
1427
1428 # get type of given object
1429 sub git_get_type {
1430         my $hash = shift;
1431
1432         open my $fd, "-|", git_cmd(), "cat-file", '-t', $hash or return;
1433         my $type = <$fd>;
1434         close $fd or return;
1435         chomp $type;
1436         return $type;
1437 }
1438
1439 # repository configuration
1440 our $config_file = '';
1441 our %config;
1442
1443 # store multiple values for single key as anonymous array reference
1444 # single values stored directly in the hash, not as [ <value> ]
1445 sub hash_set_multi {
1446         my ($hash, $key, $value) = @_;
1447
1448         if (!exists $hash->{$key}) {
1449                 $hash->{$key} = $value;
1450         } elsif (!ref $hash->{$key}) {
1451                 $hash->{$key} = [ $hash->{$key}, $value ];
1452         } else {
1453                 push @{$hash->{$key}}, $value;
1454         }
1455 }
1456
1457 # return hash of git project configuration
1458 # optionally limited to some section, e.g. 'gitweb'
1459 sub git_parse_project_config {
1460         my $section_regexp = shift;
1461         my %config;
1462
1463         local $/ = "\0";
1464
1465         open my $fh, "-|", git_cmd(), "config", '-z', '-l',
1466                 or return;
1467
1468         while (my $keyval = <$fh>) {
1469                 chomp $keyval;
1470                 my ($key, $value) = split(/\n/, $keyval, 2);
1471
1472                 hash_set_multi(\%config, $key, $value)
1473                         if (!defined $section_regexp || $key =~ /^(?:$section_regexp)\./o);
1474         }
1475         close $fh;
1476
1477         return %config;
1478 }
1479
1480 # convert config value to boolean, 'true' or 'false'
1481 # no value, number > 0, 'true' and 'yes' values are true
1482 # rest of values are treated as false (never as error)
1483 sub config_to_bool {
1484         my $val = shift;
1485
1486         # strip leading and trailing whitespace
1487         $val =~ s/^\s+//;
1488         $val =~ s/\s+$//;
1489
1490         return (!defined $val ||               # section.key
1491                 ($val =~ /^\d+$/ && $val) ||   # section.key = 1
1492                 ($val =~ /^(?:true|yes)$/i));  # section.key = true
1493 }
1494
1495 # convert config value to simple decimal number
1496 # an optional value suffix of 'k', 'm', or 'g' will cause the value
1497 # to be multiplied by 1024, 1048576, or 1073741824
1498 sub config_to_int {
1499         my $val = shift;
1500
1501         # strip leading and trailing whitespace
1502         $val =~ s/^\s+//;
1503         $val =~ s/\s+$//;
1504
1505         if (my ($num, $unit) = ($val =~ /^([0-9]*)([kmg])$/i)) {
1506                 $unit = lc($unit);
1507                 # unknown unit is treated as 1
1508                 return $num * ($unit eq 'g' ? 1073741824 :
1509                                $unit eq 'm' ?    1048576 :
1510                                $unit eq 'k' ?       1024 : 1);
1511         }
1512         return $val;
1513 }
1514
1515 # convert config value to array reference, if needed
1516 sub config_to_multi {
1517         my $val = shift;
1518
1519         return ref($val) ? $val : (defined($val) ? [ $val ] : []);
1520 }
1521
1522 sub git_get_project_config {
1523         my ($key, $type) = @_;
1524
1525         # key sanity check
1526         return unless ($key);
1527         $key =~ s/^gitweb\.//;
1528         return if ($key =~ m/\W/);
1529
1530         # type sanity check
1531         if (defined $type) {
1532                 $type =~ s/^--//;
1533                 $type = undef
1534                         unless ($type eq 'bool' || $type eq 'int');
1535         }
1536
1537         # get config
1538         if (!defined $config_file ||
1539             $config_file ne "$git_dir/config") {
1540                 %config = git_parse_project_config('gitweb');
1541                 $config_file = "$git_dir/config";
1542         }
1543
1544         # ensure given type
1545         if (!defined $type) {
1546                 return $config{"gitweb.$key"};
1547         } elsif ($type eq 'bool') {
1548                 # backward compatibility: 'git config --bool' returns true/false
1549                 return config_to_bool($config{"gitweb.$key"}) ? 'true' : 'false';
1550         } elsif ($type eq 'int') {
1551                 return config_to_int($config{"gitweb.$key"});
1552         }
1553         return $config{"gitweb.$key"};
1554 }
1555
1556 # get hash of given path at given ref
1557 sub git_get_hash_by_path {
1558         my $base = shift;
1559         my $path = shift || return undef;
1560         my $type = shift;
1561
1562         $path =~ s,/+$,,;
1563
1564         open my $fd, "-|", git_cmd(), "ls-tree", $base, "--", $path
1565                 or die_error(undef, "Open git-ls-tree failed");
1566         my $line = <$fd>;
1567         close $fd or return undef;
1568
1569         if (!defined $line) {
1570                 # there is no tree or hash given by $path at $base
1571                 return undef;
1572         }
1573
1574         #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
1575         $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t/;
1576         if (defined $type && $type ne $2) {
1577                 # type doesn't match
1578                 return undef;
1579         }
1580         return $3;
1581 }
1582
1583 # get path of entry with given hash at given tree-ish (ref)
1584 # used to get 'from' filename for combined diff (merge commit) for renames
1585 sub git_get_path_by_hash {
1586         my $base = shift || return;
1587         my $hash = shift || return;
1588
1589         local $/ = "\0";
1590
1591         open my $fd, "-|", git_cmd(), "ls-tree", '-r', '-t', '-z', $base
1592                 or return undef;
1593         while (my $line = <$fd>) {
1594                 chomp $line;
1595
1596                 #'040000 tree 595596a6a9117ddba9fe379b6b012b558bac8423  gitweb'
1597                 #'100644 blob e02e90f0429be0d2a69b76571101f20b8f75530f  gitweb/README'
1598                 if ($line =~ m/(?:[0-9]+) (?:.+) $hash\t(.+)$/) {
1599                         close $fd;
1600                         return $1;
1601                 }
1602         }
1603         close $fd;
1604         return undef;
1605 }
1606
1607 ## ......................................................................
1608 ## git utility functions, directly accessing git repository
1609
1610 sub git_get_project_description {
1611         my $path = shift;
1612
1613         $git_dir = "$projectroot/$path";
1614         open my $fd, "$git_dir/description"
1615                 or return git_get_project_config('description');
1616         my $descr = <$fd>;
1617         close $fd;
1618         if (defined $descr) {
1619                 chomp $descr;
1620         }
1621         return $descr;
1622 }
1623
1624 sub git_get_project_url_list {
1625         my $path = shift;
1626
1627         $git_dir = "$projectroot/$path";
1628         open my $fd, "$projectroot/$path/cloneurl"
1629                 or return wantarray ?
1630                 @{ config_to_multi(git_get_project_config('url')) } :
1631                    config_to_multi(git_get_project_config('url'));
1632         my @git_project_url_list = map { chomp; $_ } <$fd>;
1633         close $fd;
1634
1635         return wantarray ? @git_project_url_list : \@git_project_url_list;
1636 }
1637
1638 sub git_get_projects_list {
1639         my ($filter) = @_;
1640         my @list;
1641
1642         $filter ||= '';
1643         $filter =~ s/\.git$//;
1644
1645         my ($check_forks) = gitweb_check_feature('forks');
1646
1647         if (-d $projects_list) {
1648                 # search in directory
1649                 my $dir = $projects_list . ($filter ? "/$filter" : '');
1650                 # remove the trailing "/"
1651                 $dir =~ s!/+$!!;
1652                 my $pfxlen = length("$dir");
1653                 my $pfxdepth = ($dir =~ tr!/!!);
1654
1655                 File::Find::find({
1656                         follow_fast => 1, # follow symbolic links
1657                         follow_skip => 2, # ignore duplicates
1658                         dangling_symlinks => 0, # ignore dangling symlinks, silently
1659                         wanted => sub {
1660                                 # skip project-list toplevel, if we get it.
1661                                 return if (m!^[/.]$!);
1662                                 # only directories can be git repositories
1663                                 return unless (-d $_);
1664                                 # don't traverse too deep (Find is super slow on os x)
1665                                 if (($File::Find::name =~ tr!/!!) - $pfxdepth > $project_maxdepth) {
1666                                         $File::Find::prune = 1;
1667                                         return;
1668                                 }
1669
1670                                 my $subdir = substr($File::Find::name, $pfxlen + 1);
1671                                 # we check related file in $projectroot
1672                                 if ($check_forks and $subdir =~ m#/.#) {
1673                                         $File::Find::prune = 1;
1674                                 } elsif (check_export_ok("$projectroot/$filter/$subdir")) {
1675                                         push @list, { path => ($filter ? "$filter/" : '') . $subdir };
1676                                         $File::Find::prune = 1;
1677                                 }
1678                         },
1679                 }, "$dir");
1680
1681         } elsif (-f $projects_list) {
1682                 # read from file(url-encoded):
1683                 # 'git%2Fgit.git Linus+Torvalds'
1684                 # 'libs%2Fklibc%2Fklibc.git H.+Peter+Anvin'
1685                 # 'linux%2Fhotplug%2Fudev.git Greg+Kroah-Hartman'
1686                 my %paths;
1687                 open my ($fd), $projects_list or return;
1688         PROJECT:
1689                 while (my $line = <$fd>) {
1690                         chomp $line;
1691                         my ($path, $owner) = split ' ', $line;
1692                         $path = unescape($path);
1693                         $owner = unescape($owner);
1694                         if (!defined $path) {
1695                                 next;
1696                         }
1697                         if ($filter ne '') {
1698                                 # looking for forks;
1699                                 my $pfx = substr($path, 0, length($filter));
1700                                 if ($pfx ne $filter) {
1701                                         next PROJECT;
1702                                 }
1703                                 my $sfx = substr($path, length($filter));
1704                                 if ($sfx !~ /^\/.*\.git$/) {
1705                                         next PROJECT;
1706                                 }
1707                         } elsif ($check_forks) {
1708                         PATH:
1709                                 foreach my $filter (keys %paths) {
1710                                         # looking for forks;
1711                                         my $pfx = substr($path, 0, length($filter));
1712                                         if ($pfx ne $filter) {
1713                                                 next PATH;
1714                                         }
1715                                         my $sfx = substr($path, length($filter));
1716                                         if ($sfx !~ /^\/.*\.git$/) {
1717                                                 next PATH;
1718                                         }
1719                                         # is a fork, don't include it in
1720                                         # the list
1721                                         next PROJECT;
1722                                 }
1723                         }
1724                         if (check_export_ok("$projectroot/$path")) {
1725                                 my $pr = {
1726                                         path => $path,
1727                                         owner => to_utf8($owner),
1728                                 };
1729                                 push @list, $pr;
1730                                 (my $forks_path = $path) =~ s/\.git$//;
1731                                 $paths{$forks_path}++;
1732                         }
1733                 }
1734                 close $fd;
1735         }
1736         return @list;
1737 }
1738
1739 our $gitweb_project_owner = undef;
1740 sub git_get_project_list_from_file {
1741
1742         return if (defined $gitweb_project_owner);
1743
1744         $gitweb_project_owner = {};
1745         # read from file (url-encoded):
1746         # 'git%2Fgit.git Linus+Torvalds'
1747         # 'libs%2Fklibc%2Fklibc.git H.+Peter+Anvin'
1748         # 'linux%2Fhotplug%2Fudev.git Greg+Kroah-Hartman'
1749         if (-f $projects_list) {
1750                 open (my $fd , $projects_list);
1751                 while (my $line = <$fd>) {
1752                         chomp $line;
1753                         my ($pr, $ow) = split ' ', $line;
1754                         $pr = unescape($pr);
1755                         $ow = unescape($ow);
1756                         $gitweb_project_owner->{$pr} = to_utf8($ow);
1757                 }
1758                 close $fd;
1759         }
1760 }
1761
1762 sub git_get_project_owner {
1763         my $project = shift;
1764         my $owner;
1765
1766         return undef unless $project;
1767
1768         if (!defined $gitweb_project_owner) {
1769                 git_get_project_list_from_file();
1770         }
1771
1772         if (exists $gitweb_project_owner->{$project}) {
1773                 $owner = $gitweb_project_owner->{$project};
1774         }
1775         if (!defined $owner) {
1776                 $owner = get_file_owner("$projectroot/$project");
1777         }
1778
1779         return $owner;
1780 }
1781
1782 sub git_get_last_activity {
1783         my ($path) = @_;
1784         my $fd;
1785
1786         $git_dir = "$projectroot/$path";
1787         open($fd, "-|", git_cmd(), 'for-each-ref',
1788              '--format=%(committer)',
1789              '--sort=-committerdate',
1790              '--count=1',
1791              'refs/heads') or return;
1792         my $most_recent = <$fd>;
1793         close $fd or return;
1794         if (defined $most_recent &&
1795             $most_recent =~ / (\d+) [-+][01]\d\d\d$/) {
1796                 my $timestamp = $1;
1797                 my $age = time - $timestamp;
1798                 return ($age, age_string($age));
1799         }
1800         return (undef, undef);
1801 }
1802
1803 sub git_get_references {
1804         my $type = shift || "";
1805         my %refs;
1806         # 5dc01c595e6c6ec9ccda4f6f69c131c0dd945f8c refs/tags/v2.6.11
1807         # c39ae07f393806ccf406ef966e9a15afc43cc36a refs/tags/v2.6.11^{}
1808         open my $fd, "-|", git_cmd(), "show-ref", "--dereference",
1809                 ($type ? ("--", "refs/$type") : ()) # use -- <pattern> if $type
1810                 or return;
1811
1812         while (my $line = <$fd>) {
1813                 chomp $line;
1814                 if ($line =~ m!^([0-9a-fA-F]{40})\srefs/($type/?[^^]+)!) {
1815                         if (defined $refs{$1}) {
1816                                 push @{$refs{$1}}, $2;
1817                         } else {
1818                                 $refs{$1} = [ $2 ];
1819                         }
1820                 }
1821         }
1822         close $fd or return;
1823         return \%refs;
1824 }
1825
1826 sub git_get_rev_name_tags {
1827         my $hash = shift || return undef;
1828
1829         open my $fd, "-|", git_cmd(), "name-rev", "--tags", $hash
1830                 or return;
1831         my $name_rev = <$fd>;
1832         close $fd;
1833
1834         if ($name_rev =~ m|^$hash tags/(.*)$|) {
1835                 return $1;
1836         } else {
1837                 # catches also '$hash undefined' output
1838                 return undef;
1839         }
1840 }
1841
1842 ## ----------------------------------------------------------------------
1843 ## parse to hash functions
1844
1845 sub parse_date {
1846         my $epoch = shift;
1847         my $tz = shift || "-0000";
1848
1849         my %date;
1850         my @months = ("Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec");
1851         my @days = ("Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat");
1852         my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($epoch);
1853         $date{'hour'} = $hour;
1854         $date{'minute'} = $min;
1855         $date{'mday'} = $mday;
1856         $date{'day'} = $days[$wday];
1857         $date{'month'} = $months[$mon];
1858         $date{'rfc2822'}   = sprintf "%s, %d %s %4d %02d:%02d:%02d +0000",
1859                              $days[$wday], $mday, $months[$mon], 1900+$year, $hour ,$min, $sec;
1860         $date{'mday-time'} = sprintf "%d %s %02d:%02d",
1861                              $mday, $months[$mon], $hour ,$min;
1862         $date{'iso-8601'}  = sprintf "%04d-%02d-%02dT%02d:%02d:%02dZ",
1863                              1900+$year, 1+$mon, $mday, $hour ,$min, $sec;
1864
1865         $tz =~ m/^([+\-][0-9][0-9])([0-9][0-9])$/;
1866         my $local = $epoch + ((int $1 + ($2/60)) * 3600);
1867         ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($local);
1868         $date{'hour_local'} = $hour;
1869         $date{'minute_local'} = $min;
1870         $date{'tz_local'} = $tz;
1871         $date{'iso-tz'} = sprintf("%04d-%02d-%02d %02d:%02d:%02d %s",
1872                                   1900+$year, $mon+1, $mday,
1873                                   $hour, $min, $sec, $tz);
1874         return %date;
1875 }
1876
1877 sub parse_tag {
1878         my $tag_id = shift;
1879         my %tag;
1880         my @comment;
1881
1882         open my $fd, "-|", git_cmd(), "cat-file", "tag", $tag_id or return;
1883         $tag{'id'} = $tag_id;
1884         while (my $line = <$fd>) {
1885                 chomp $line;
1886                 if ($line =~ m/^object ([0-9a-fA-F]{40})$/) {
1887                         $tag{'object'} = $1;
1888                 } elsif ($line =~ m/^type (.+)$/) {
1889                         $tag{'type'} = $1;
1890                 } elsif ($line =~ m/^tag (.+)$/) {
1891                         $tag{'name'} = $1;
1892                 } elsif ($line =~ m/^tagger (.*) ([0-9]+) (.*)$/) {
1893                         $tag{'author'} = $1;
1894                         $tag{'epoch'} = $2;
1895                         $tag{'tz'} = $3;
1896                 } elsif ($line =~ m/--BEGIN/) {
1897                         push @comment, $line;
1898                         last;
1899                 } elsif ($line eq "") {
1900                         last;
1901                 }
1902         }
1903         push @comment, <$fd>;
1904         $tag{'comment'} = \@comment;
1905         close $fd or return;
1906         if (!defined $tag{'name'}) {
1907                 return
1908         };
1909         return %tag
1910 }
1911
1912 sub parse_commit_text {
1913         my ($commit_text, $withparents) = @_;
1914         my @commit_lines = split '\n', $commit_text;
1915         my %co;
1916
1917         pop @commit_lines; # Remove '\0'
1918
1919         if (! @commit_lines) {
1920                 return;
1921         }
1922
1923         my $header = shift @commit_lines;
1924         if ($header !~ m/^[0-9a-fA-F]{40}/) {
1925                 return;
1926         }
1927         ($co{'id'}, my @parents) = split ' ', $header;
1928         while (my $line = shift @commit_lines) {
1929                 last if $line eq "\n";
1930                 if ($line =~ m/^tree ([0-9a-fA-F]{40})$/) {
1931                         $co{'tree'} = $1;
1932                 } elsif ((!defined $withparents) && ($line =~ m/^parent ([0-9a-fA-F]{40})$/)) {
1933                         push @parents, $1;
1934                 } elsif ($line =~ m/^author (.*) ([0-9]+) (.*)$/) {
1935                         $co{'author'} = $1;
1936                         $co{'author_epoch'} = $2;
1937                         $co{'author_tz'} = $3;
1938                         if ($co{'author'} =~ m/^([^<]+) <([^>]*)>/) {
1939                                 $co{'author_name'}  = $1;
1940                                 $co{'author_email'} = $2;
1941                         } else {
1942                                 $co{'author_name'} = $co{'author'};
1943                         }
1944                 } elsif ($line =~ m/^committer (.*) ([0-9]+) (.*)$/) {
1945                         $co{'committer'} = $1;
1946                         $co{'committer_epoch'} = $2;
1947                         $co{'committer_tz'} = $3;
1948                         $co{'committer_name'} = $co{'committer'};
1949                         if ($co{'committer'} =~ m/^([^<]+) <([^>]*)>/) {
1950                                 $co{'committer_name'}  = $1;
1951                                 $co{'committer_email'} = $2;
1952                         } else {
1953                                 $co{'committer_name'} = $co{'committer'};
1954                         }
1955                 }
1956         }
1957         if (!defined $co{'tree'}) {
1958                 return;
1959         };
1960         $co{'parents'} = \@parents;
1961         $co{'parent'} = $parents[0];
1962
1963         foreach my $title (@commit_lines) {
1964                 $title =~ s/^    //;
1965                 if ($title ne "") {
1966                         $co{'title'} = chop_str($title, 80, 5);
1967                         # remove leading stuff of merges to make the interesting part visible
1968                         if (length($title) > 50) {
1969                                 $title =~ s/^Automatic //;
1970                                 $title =~ s/^merge (of|with) /Merge ... /i;
1971                                 if (length($title) > 50) {
1972                                         $title =~ s/(http|rsync):\/\///;
1973                                 }
1974                                 if (length($title) > 50) {
1975                                         $title =~ s/(master|www|rsync)\.//;
1976                                 }
1977                                 if (length($title) > 50) {
1978                                         $title =~ s/kernel.org:?//;
1979                                 }
1980                                 if (length($title) > 50) {
1981                                         $title =~ s/\/pub\/scm//;
1982                                 }
1983                         }
1984                         $co{'title_short'} = chop_str($title, 50, 5);
1985                         last;
1986                 }
1987         }
1988         if ($co{'title'} eq "") {
1989                 $co{'title'} = $co{'title_short'} = '(no commit message)';
1990         }
1991         # remove added spaces
1992         foreach my $line (@commit_lines) {
1993                 $line =~ s/^    //;
1994         }
1995         $co{'comment'} = \@commit_lines;
1996
1997         my $age = time - $co{'committer_epoch'};
1998         $co{'age'} = $age;
1999         $co{'age_string'} = age_string($age);
2000         my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($co{'committer_epoch'});
2001         if ($age > 60*60*24*7*2) {
2002                 $co{'age_string_date'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
2003                 $co{'age_string_age'} = $co{'age_string'};
2004         } else {
2005                 $co{'age_string_date'} = $co{'age_string'};
2006                 $co{'age_string_age'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
2007         }
2008         return %co;
2009 }
2010
2011 sub parse_commit {
2012         my ($commit_id) = @_;
2013         my %co;
2014
2015         local $/ = "\0";
2016
2017         open my $fd, "-|", git_cmd(), "rev-list",
2018                 "--parents",
2019                 "--header",
2020                 "--max-count=1",
2021                 $commit_id,
2022                 "--",
2023                 or die_error(undef, "Open git-rev-list failed");
2024         %co = parse_commit_text(<$fd>, 1);
2025         close $fd;
2026
2027         return %co;
2028 }
2029
2030 sub parse_commits {
2031         my ($commit_id, $maxcount, $skip, $arg, $filename) = @_;
2032         my @cos;
2033
2034         $maxcount ||= 1;
2035         $skip ||= 0;
2036
2037         local $/ = "\0";
2038
2039         open my $fd, "-|", git_cmd(), "rev-list",
2040                 "--header",
2041                 ($arg ? ($arg) : ()),
2042                 ("--max-count=" . $maxcount),
2043                 ("--skip=" . $skip),
2044                 @extra_options,
2045                 $commit_id,
2046                 "--",
2047                 ($filename ? ($filename) : ())
2048                 or die_error(undef, "Open git-rev-list failed");
2049         while (my $line = <$fd>) {
2050                 my %co = parse_commit_text($line);
2051                 push @cos, \%co;
2052         }
2053         close $fd;
2054
2055         return wantarray ? @cos : \@cos;
2056 }
2057
2058 # parse ref from ref_file, given by ref_id, with given type
2059 sub parse_ref {
2060         my $ref_file = shift;
2061         my $ref_id = shift;
2062         my $type = shift || git_get_type($ref_id);
2063         my %ref_item;
2064
2065         $ref_item{'type'} = $type;
2066         $ref_item{'id'} = $ref_id;
2067         $ref_item{'epoch'} = 0;
2068         $ref_item{'age'} = "unknown";
2069         if ($type eq "tag") {
2070                 my %tag = parse_tag($ref_id);
2071                 $ref_item{'comment'} = $tag{'comment'};
2072                 if ($tag{'type'} eq "commit") {
2073                         my %co = parse_commit($tag{'object'});
2074                         $ref_item{'epoch'} = $co{'committer_epoch'};
2075                         $ref_item{'age'} = $co{'age_string'};
2076                 } elsif (defined($tag{'epoch'})) {
2077                         my $age = time - $tag{'epoch'};
2078                         $ref_item{'epoch'} = $tag{'epoch'};
2079                         $ref_item{'age'} = age_string($age);
2080                 }
2081                 $ref_item{'reftype'} = $tag{'type'};
2082                 $ref_item{'name'} = $tag{'name'};
2083                 $ref_item{'refid'} = $tag{'object'};
2084         } elsif ($type eq "commit"){
2085                 my %co = parse_commit($ref_id);
2086                 $ref_item{'reftype'} = "commit";
2087                 $ref_item{'name'} = $ref_file;
2088                 $ref_item{'title'} = $co{'title'};
2089                 $ref_item{'refid'} = $ref_id;
2090                 $ref_item{'epoch'} = $co{'committer_epoch'};
2091                 $ref_item{'age'} = $co{'age_string'};
2092         } else {
2093                 $ref_item{'reftype'} = $type;
2094                 $ref_item{'name'} = $ref_file;
2095                 $ref_item{'refid'} = $ref_id;
2096         }
2097
2098         return %ref_item;
2099 }
2100
2101 # parse line of git-diff-tree "raw" output
2102 sub parse_difftree_raw_line {
2103         my $line = shift;
2104         my %res;
2105
2106         # ':100644 100644 03b218260e99b78c6df0ed378e59ed9205ccc96d 3b93d5e7cc7f7dd4ebed13a5cc1a4ad976fc94d8 M   ls-files.c'
2107         # ':100644 100644 7f9281985086971d3877aca27704f2aaf9c448ce bc190ebc71bbd923f2b728e505408f5e54bd073a M   rev-tree.c'
2108         if ($line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)([0-9]{0,3})\t(.*)$/) {
2109                 $res{'from_mode'} = $1;
2110                 $res{'to_mode'} = $2;
2111                 $res{'from_id'} = $3;
2112                 $res{'to_id'} = $4;
2113                 $res{'status'} = $res{'status_str'} = $5;
2114                 $res{'similarity'} = $6;
2115                 if ($res{'status'} eq 'R' || $res{'status'} eq 'C') { # renamed or copied
2116                         ($res{'from_file'}, $res{'to_file'}) = map { unquote($_) } split("\t", $7);
2117                 } else {
2118                         $res{'from_file'} = $res{'to_file'} = $res{'file'} = unquote($7);
2119                 }
2120         }
2121         # '::100755 100755 100755 60e79ca1b01bc8b057abe17ddab484699a7f5fdb 94067cc5f73388f33722d52ae02f44692bc07490 94067cc5f73388f33722d52ae02f44692bc07490 MR git-gui/git-gui.sh'
2122         # combined diff (for merge commit)
2123         elsif ($line =~ s/^(::+)((?:[0-7]{6} )+)((?:[0-9a-fA-F]{40} )+)([a-zA-Z]+)\t(.*)$//) {
2124                 $res{'nparents'}  = length($1);
2125                 $res{'from_mode'} = [ split(' ', $2) ];
2126                 $res{'to_mode'} = pop @{$res{'from_mode'}};
2127                 $res{'from_id'} = [ split(' ', $3) ];
2128                 $res{'to_id'} = pop @{$res{'from_id'}};
2129                 $res{'status_str'} = $4;
2130                 $res{'status'} = [ split('', $4) ];
2131                 $res{'to_file'} = unquote($5);
2132         }
2133         # 'c512b523472485aef4fff9e57b229d9d243c967f'
2134         elsif ($line =~ m/^([0-9a-fA-F]{40})$/) {
2135                 $res{'commit'} = $1;
2136         }
2137
2138         return wantarray ? %res : \%res;
2139 }
2140
2141 # wrapper: return parsed line of git-diff-tree "raw" output
2142 # (the argument might be raw line, or parsed info)
2143 sub parsed_difftree_line {
2144         my $line_or_ref = shift;
2145
2146         if (ref($line_or_ref) eq "HASH") {
2147                 # pre-parsed (or generated by hand)
2148                 return $line_or_ref;
2149         } else {
2150                 return parse_difftree_raw_line($line_or_ref);
2151         }
2152 }
2153
2154 # parse line of git-ls-tree output
2155 sub parse_ls_tree_line ($;%) {
2156         my $line = shift;
2157         my %opts = @_;
2158         my %res;
2159
2160         #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
2161         $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t(.+)$/s;
2162
2163         $res{'mode'} = $1;
2164         $res{'type'} = $2;
2165         $res{'hash'} = $3;
2166         if ($opts{'-z'}) {
2167                 $res{'name'} = $4;
2168         } else {
2169                 $res{'name'} = unquote($4);
2170         }
2171
2172         return wantarray ? %res : \%res;
2173 }
2174
2175 # generates _two_ hashes, references to which are passed as 2 and 3 argument
2176 sub parse_from_to_diffinfo {
2177         my ($diffinfo, $from, $to, @parents) = @_;
2178
2179         if ($diffinfo->{'nparents'}) {
2180                 # combined diff
2181                 $from->{'file'} = [];
2182                 $from->{'href'} = [];
2183                 fill_from_file_info($diffinfo, @parents)
2184                         unless exists $diffinfo->{'from_file'};
2185                 for (my $i = 0; $i < $diffinfo->{'nparents'}; $i++) {
2186                         $from->{'file'}[$i] =
2187                                 defined $diffinfo->{'from_file'}[$i] ?
2188                                         $diffinfo->{'from_file'}[$i] :
2189                                         $diffinfo->{'to_file'};
2190                         if ($diffinfo->{'status'}[$i] ne "A") { # not new (added) file
2191                                 $from->{'href'}[$i] = href(action=>"blob",
2192                                                            hash_base=>$parents[$i],
2193                                                            hash=>$diffinfo->{'from_id'}[$i],
2194                                                            file_name=>$from->{'file'}[$i]);
2195                         } else {
2196                                 $from->{'href'}[$i] = undef;
2197                         }
2198                 }
2199         } else {
2200                 # ordinary (not combined) diff
2201                 $from->{'file'} = $diffinfo->{'from_file'};
2202                 if ($diffinfo->{'status'} ne "A") { # not new (added) file
2203                         $from->{'href'} = href(action=>"blob", hash_base=>$hash_parent,
2204                                                hash=>$diffinfo->{'from_id'},
2205                                                file_name=>$from->{'file'});
2206                 } else {
2207                         delete $from->{'href'};
2208                 }
2209         }
2210
2211         $to->{'file'} = $diffinfo->{'to_file'};
2212         if (!is_deleted($diffinfo)) { # file exists in result
2213                 $to->{'href'} = href(action=>"blob", hash_base=>$hash,
2214                                      hash=>$diffinfo->{'to_id'},
2215                                      file_name=>$to->{'file'});
2216         } else {
2217                 delete $to->{'href'};
2218         }
2219 }
2220
2221 ## ......................................................................
2222 ## parse to array of hashes functions
2223
2224 sub git_get_heads_list {
2225         my $limit = shift;
2226         my @headslist;
2227
2228         open my $fd, '-|', git_cmd(), 'for-each-ref',
2229                 ($limit ? '--count='.($limit+1) : ()), '--sort=-committerdate',
2230                 '--format=%(objectname) %(refname) %(subject)%00%(committer)',
2231                 'refs/heads'
2232                 or return;
2233         while (my $line = <$fd>) {
2234                 my %ref_item;
2235
2236                 chomp $line;
2237                 my ($refinfo, $committerinfo) = split(/\0/, $line);
2238                 my ($hash, $name, $title) = split(' ', $refinfo, 3);
2239                 my ($committer, $epoch, $tz) =
2240                         ($committerinfo =~ /^(.*) ([0-9]+) (.*)$/);
2241                 $ref_item{'fullname'}  = $name;
2242                 $name =~ s!^refs/heads/!!;
2243
2244                 $ref_item{'name'}  = $name;
2245                 $ref_item{'id'}    = $hash;
2246                 $ref_item{'title'} = $title || '(no commit message)';
2247                 $ref_item{'epoch'} = $epoch;
2248                 if ($epoch) {
2249                         $ref_item{'age'} = age_string(time - $ref_item{'epoch'});
2250                 } else {
2251                         $ref_item{'age'} = "unknown";
2252                 }
2253
2254                 push @headslist, \%ref_item;
2255         }
2256         close $fd;
2257
2258         return wantarray ? @headslist : \@headslist;
2259 }
2260
2261 sub git_get_tags_list {
2262         my $limit = shift;
2263         my @tagslist;
2264
2265         open my $fd, '-|', git_cmd(), 'for-each-ref',
2266                 ($limit ? '--count='.($limit+1) : ()), '--sort=-creatordate',
2267                 '--format=%(objectname) %(objecttype) %(refname) '.
2268                 '%(*objectname) %(*objecttype) %(subject)%00%(creator)',
2269                 'refs/tags'
2270                 or return;
2271         while (my $line = <$fd>) {
2272                 my %ref_item;
2273
2274                 chomp $line;
2275                 my ($refinfo, $creatorinfo) = split(/\0/, $line);
2276                 my ($id, $type, $name, $refid, $reftype, $title) = split(' ', $refinfo, 6);
2277                 my ($creator, $epoch, $tz) =
2278                         ($creatorinfo =~ /^(.*) ([0-9]+) (.*)$/);
2279                 $ref_item{'fullname'} = $name;
2280                 $name =~ s!^refs/tags/!!;
2281
2282                 $ref_item{'type'} = $type;
2283                 $ref_item{'id'} = $id;
2284                 $ref_item{'name'} = $name;
2285                 if ($type eq "tag") {
2286                         $ref_item{'subject'} = $title;
2287                         $ref_item{'reftype'} = $reftype;
2288                         $ref_item{'refid'}   = $refid;
2289                 } else {
2290                         $ref_item{'reftype'} = $type;
2291                         $ref_item{'refid'}   = $id;
2292                 }
2293
2294                 if ($type eq "tag" || $type eq "commit") {
2295                         $ref_item{'epoch'} = $epoch;
2296                         if ($epoch) {
2297                                 $ref_item{'age'} = age_string(time - $ref_item{'epoch'});
2298                         } else {
2299                                 $ref_item{'age'} = "unknown";
2300                         }
2301                 }
2302
2303                 push @tagslist, \%ref_item;
2304         }
2305         close $fd;
2306
2307         return wantarray ? @tagslist : \@tagslist;
2308 }
2309
2310 ## ----------------------------------------------------------------------
2311 ## filesystem-related functions
2312
2313 sub get_file_owner {
2314         my $path = shift;
2315
2316         my ($dev, $ino, $mode, $nlink, $st_uid, $st_gid, $rdev, $size) = stat($path);
2317         my ($name, $passwd, $uid, $gid, $quota, $comment, $gcos, $dir, $shell) = getpwuid($st_uid);
2318         if (!defined $gcos) {
2319                 return undef;
2320         }
2321         my $owner = $gcos;
2322         $owner =~ s/[,;].*$//;
2323         return to_utf8($owner);
2324 }
2325
2326 ## ......................................................................
2327 ## mimetype related functions
2328
2329 sub mimetype_guess_file {
2330         my $filename = shift;
2331         my $mimemap = shift;
2332         -r $mimemap or return undef;
2333
2334         my %mimemap;
2335         open(MIME, $mimemap) or return undef;
2336         while (<MIME>) {
2337                 next if m/^#/; # skip comments
2338                 my ($mime, $exts) = split(/\t+/);
2339                 if (defined $exts) {
2340                         my @exts = split(/\s+/, $exts);
2341                         foreach my $ext (@exts) {
2342                                 $mimemap{$ext} = $mime;
2343                         }
2344                 }
2345         }
2346         close(MIME);
2347
2348         $filename =~ /\.([^.]*)$/;
2349         return $mimemap{$1};
2350 }
2351
2352 sub mimetype_guess {
2353         my $filename = shift;
2354         my $mime;
2355         $filename =~ /\./ or return undef;
2356
2357         if ($mimetypes_file) {
2358                 my $file = $mimetypes_file;
2359                 if ($file !~ m!^/!) { # if it is relative path
2360                         # it is relative to project
2361                         $file = "$projectroot/$project/$file";
2362                 }
2363                 $mime = mimetype_guess_file($filename, $file);
2364         }
2365         $mime ||= mimetype_guess_file($filename, '/etc/mime.types');
2366         return $mime;
2367 }
2368
2369 sub blob_mimetype {
2370         my $fd = shift;
2371         my $filename = shift;
2372
2373         if ($filename) {
2374                 my $mime = mimetype_guess($filename);
2375                 $mime and return $mime;
2376         }
2377
2378         # just in case
2379         return $default_blob_plain_mimetype unless $fd;
2380
2381         if (-T $fd) {
2382                 return 'text/plain' .
2383                        ($default_text_plain_charset ? '; charset='.$default_text_plain_charset : '');
2384         } elsif (! $filename) {
2385                 return 'application/octet-stream';
2386         } elsif ($filename =~ m/\.png$/i) {
2387                 return 'image/png';
2388         } elsif ($filename =~ m/\.gif$/i) {
2389                 return 'image/gif';
2390         } elsif ($filename =~ m/\.jpe?g$/i) {
2391                 return 'image/jpeg';
2392         } else {
2393                 return 'application/octet-stream';
2394         }
2395 }
2396
2397 ## ======================================================================
2398 ## functions printing HTML: header, footer, error page
2399
2400 sub git_header_html {
2401         my $status = shift || "200 OK";
2402         my $expires = shift;
2403
2404         my $title = "$site_name";
2405         if (defined $project) {
2406                 $title .= " - " . to_utf8($project);
2407                 if (defined $action) {
2408                         $title .= "/$action";
2409                         if (defined $file_name) {
2410                                 $title .= " - " . esc_path($file_name);
2411                                 if ($action eq "tree" && $file_name !~ m|/$|) {
2412                                         $title .= "/";
2413                                 }
2414                         }
2415                 }
2416         }
2417         my $content_type;
2418         # require explicit support from the UA if we are to send the page as
2419         # 'application/xhtml+xml', otherwise send it as plain old 'text/html'.
2420         # we have to do this because MSIE sometimes globs '*/*', pretending to
2421         # support xhtml+xml but choking when it gets what it asked for.
2422         if (defined $cgi->http('HTTP_ACCEPT') &&
2423             $cgi->http('HTTP_ACCEPT') =~ m/(,|;|\s|^)application\/xhtml\+xml(,|;|\s|$)/ &&
2424             $cgi->Accept('application/xhtml+xml') != 0) {
2425                 $content_type = 'application/xhtml+xml';
2426         } else {
2427                 $content_type = 'text/html';
2428         }
2429         print $cgi->header(-type=>$content_type, -charset => 'utf-8',
2430                            -status=> $status, -expires => $expires);
2431         my $mod_perl_version = $ENV{'MOD_PERL'} ? " $ENV{'MOD_PERL'}" : '';
2432         print <<EOF;
2433 <?xml version="1.0" encoding="utf-8"?>
2434 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
2435 <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en-US" lang="en-US">
2436 <!-- git web interface version $version, (C) 2005-2006, Kay Sievers <kay.sievers\@vrfy.org>, Christian Gierke -->
2437 <!-- git core binaries version $git_version -->
2438 <head>
2439 <meta http-equiv="content-type" content="$content_type; charset=utf-8"/>
2440 <meta name="generator" content="gitweb/$version git/$git_version$mod_perl_version"/>
2441 <meta name="robots" content="index, nofollow"/>
2442 <title>$title</title>
2443 EOF
2444 # print out each stylesheet that exist
2445         if (defined $stylesheet) {
2446 #provides backwards capability for those people who define style sheet in a config file
2447                 print '<link rel="stylesheet" type="text/css" href="'.$stylesheet.'"/>'."\n";
2448         } else {
2449                 foreach my $stylesheet (@stylesheets) {
2450                         next unless $stylesheet;
2451                         print '<link rel="stylesheet" type="text/css" href="'.$stylesheet.'"/>'."\n";
2452                 }
2453         }
2454         if (defined $project) {
2455                 printf('<link rel="alternate" title="%s log RSS feed" '.
2456                        'href="%s" type="application/rss+xml" />'."\n",
2457                        esc_param($project), href(action=>"rss"));
2458                 printf('<link rel="alternate" title="%s log RSS feed (no merges)" '.
2459                        'href="%s" type="application/rss+xml" />'."\n",
2460                        esc_param($project), href(action=>"rss",
2461                                                  extra_options=>"--no-merges"));
2462                 printf('<link rel="alternate" title="%s log Atom feed" '.
2463                        'href="%s" type="application/atom+xml" />'."\n",
2464                        esc_param($project), href(action=>"atom"));
2465                 printf('<link rel="alternate" title="%s log Atom feed (no merges)" '.
2466                        'href="%s" type="application/atom+xml" />'."\n",
2467                        esc_param($project), href(action=>"atom",
2468                                                  extra_options=>"--no-merges"));
2469         } else {
2470                 printf('<link rel="alternate" title="%s projects list" '.
2471                        'href="%s" type="text/plain; charset=utf-8"/>'."\n",
2472                        $site_name, href(project=>undef, action=>"project_index"));
2473                 printf('<link rel="alternate" title="%s projects feeds" '.
2474                        'href="%s" type="text/x-opml"/>'."\n",
2475                        $site_name, href(project=>undef, action=>"opml"));
2476         }
2477         if (defined $favicon) {
2478                 print qq(<link rel="shortcut icon" href="$favicon" type="image/png"/>\n);
2479         }
2480
2481         print "</head>\n" .
2482               "<body>\n";
2483
2484         if (-f $site_header) {
2485                 open (my $fd, $site_header);
2486                 print <$fd>;
2487                 close $fd;
2488         }
2489
2490         print "<div class=\"page_header\">\n" .
2491               $cgi->a({-href => esc_url($logo_url),
2492                        -title => $logo_label},
2493                       qq(<img src="$logo" width="72" height="27" alt="git" class="logo"/>));
2494         print $cgi->a({-href => esc_url($home_link)}, $home_link_str) . " / ";
2495         if (defined $project) {
2496                 print $cgi->a({-href => href(action=>"summary")}, esc_html($project));
2497                 if (defined $action) {
2498                         print " / $action";
2499                 }
2500                 print "\n";
2501         }
2502         print "</div>\n";
2503
2504         my ($have_search) = gitweb_check_feature('search');
2505         if ((defined $project) && ($have_search)) {
2506                 if (!defined $searchtext) {
2507                         $searchtext = "";
2508                 }
2509                 my $search_hash;
2510                 if (defined $hash_base) {
2511                         $search_hash = $hash_base;
2512                 } elsif (defined $hash) {
2513                         $search_hash = $hash;
2514                 } else {
2515                         $search_hash = "HEAD";
2516                 }
2517                 my $action = $my_uri;
2518                 my ($use_pathinfo) = gitweb_check_feature('pathinfo');
2519                 if ($use_pathinfo) {
2520                         $action .= "/$project";
2521                 } else {
2522                         $cgi->param("p", $project);
2523                 }
2524                 $cgi->param("a", "search");
2525                 $cgi->param("h", $search_hash);
2526                 print $cgi->startform(-method => "get", -action => $action) .
2527                       "<div class=\"search\">\n" .
2528                       (!$use_pathinfo && $cgi->hidden(-name => "p") . "\n") .
2529                       $cgi->hidden(-name => "a") . "\n" .
2530                       $cgi->hidden(-name => "h") . "\n" .
2531                       $cgi->popup_menu(-name => 'st', -default => 'commit',
2532                                        -values => ['commit', 'grep', 'author', 'committer', 'pickaxe']) .
2533                       $cgi->sup($cgi->a({-href => href(action=>"search_help")}, "?")) .
2534                       " search:\n",
2535                       $cgi->textfield(-name => "s", -value => $searchtext) . "\n" .
2536                       "</div>" .
2537                       $cgi->end_form() . "\n";
2538         }
2539 }
2540
2541 sub git_footer_html {
2542         print "<div class=\"page_footer\">\n";
2543         if (defined $project) {
2544                 my $descr = git_get_project_description($project);
2545                 if (defined $descr) {
2546                         print "<div class=\"page_footer_text\">" . esc_html($descr) . "</div>\n";
2547                 }
2548                 print $cgi->a({-href => href(action=>"rss"),
2549                               -class => "rss_logo"}, "RSS") . " ";
2550                 print $cgi->a({-href => href(action=>"atom"),
2551                               -class => "rss_logo"}, "Atom") . "\n";
2552         } else {
2553                 print $cgi->a({-href => href(project=>undef, action=>"opml"),
2554                               -class => "rss_logo"}, "OPML") . " ";
2555                 print $cgi->a({-href => href(project=>undef, action=>"project_index"),
2556                               -class => "rss_logo"}, "TXT") . "\n";
2557         }
2558         print "</div>\n" ;
2559
2560         if (-f $site_footer) {
2561                 open (my $fd, $site_footer);
2562                 print <$fd>;
2563                 close $fd;
2564         }
2565
2566         print "</body>\n" .
2567               "</html>";
2568 }
2569
2570 sub die_error {
2571         my $status = shift || "403 Forbidden";
2572         my $error = shift || "Malformed query, file missing or permission denied";
2573
2574         git_header_html($status);
2575         print <<EOF;
2576 <div class="page_body">
2577 <br /><br />
2578 $status - $error
2579 <br />
2580 </div>
2581 EOF
2582         git_footer_html();
2583         exit;
2584 }
2585
2586 ## ----------------------------------------------------------------------
2587 ## functions printing or outputting HTML: navigation
2588
2589 sub git_print_page_nav {
2590         my ($current, $suppress, $head, $treehead, $treebase, $extra) = @_;
2591         $extra = '' if !defined $extra; # pager or formats
2592
2593         my @navs = qw(summary shortlog log commit commitdiff tree);
2594         if ($suppress) {
2595                 @navs = grep { $_ ne $suppress } @navs;
2596         }
2597
2598         my %arg = map { $_ => {action=>$_} } @navs;
2599         if (defined $head) {
2600                 for (qw(commit commitdiff)) {
2601                         $arg{$_}{'hash'} = $head;
2602                 }
2603                 if ($current =~ m/^(tree | log | shortlog | commit | commitdiff | search)$/x) {
2604                         for (qw(shortlog log)) {
2605                                 $arg{$_}{'hash'} = $head;
2606                         }
2607                 }
2608         }
2609         $arg{'tree'}{'hash'} = $treehead if defined $treehead;
2610         $arg{'tree'}{'hash_base'} = $treebase if defined $treebase;
2611
2612         print "<div class=\"page_nav\">\n" .
2613                 (join " | ",
2614                  map { $_ eq $current ?
2615                        $_ : $cgi->a({-href => href(%{$arg{$_}})}, "$_")
2616                  } @navs);
2617         print "<br/>\n$extra<br/>\n" .
2618               "</div>\n";
2619 }
2620
2621 sub format_paging_nav {
2622         my ($action, $hash, $head, $page, $nrevs) = @_;
2623         my $paging_nav;
2624
2625
2626         if ($hash ne $head || $page) {
2627                 $paging_nav .= $cgi->a({-href => href(action=>$action)}, "HEAD");
2628         } else {
2629                 $paging_nav .= "HEAD";
2630         }
2631
2632         if ($page > 0) {
2633                 $paging_nav .= " &sdot; " .
2634                         $cgi->a({-href => href(-replay=>1, page=>$page-1),
2635                                  -accesskey => "p", -title => "Alt-p"}, "prev");
2636         } else {
2637                 $paging_nav .= " &sdot; prev";
2638         }
2639
2640         if ($nrevs >= (100 * ($page+1)-1)) {
2641                 $paging_nav .= " &sdot; " .
2642                         $cgi->a({-href => href(-replay=>1, page=>$page+1),
2643                                  -accesskey => "n", -title => "Alt-n"}, "next");
2644         } else {
2645                 $paging_nav .= " &sdot; next";
2646         }
2647
2648         return $paging_nav;
2649 }
2650
2651 ## ......................................................................
2652 ## functions printing or outputting HTML: div
2653
2654 sub git_print_header_div {
2655         my ($action, $title, $hash, $hash_base) = @_;
2656         my %args = ();
2657
2658         $args{'action'} = $action;
2659         $args{'hash'} = $hash if $hash;
2660         $args{'hash_base'} = $hash_base if $hash_base;
2661
2662         print "<div class=\"header\">\n" .
2663               $cgi->a({-href => href(%args), -class => "title"},
2664               $title ? $title : $action) .
2665               "\n</div>\n";
2666 }
2667
2668 #sub git_print_authorship (\%) {
2669 sub git_print_authorship {
2670         my $co = shift;
2671
2672         my %ad = parse_date($co->{'author_epoch'}, $co->{'author_tz'});
2673         print "<div class=\"author_date\">" .
2674               esc_html($co->{'author_name'}) .
2675               " [$ad{'rfc2822'}";
2676         if ($ad{'hour_local'} < 6) {
2677                 printf(" (<span class=\"atnight\">%02d:%02d</span> %s)",
2678                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
2679         } else {
2680                 printf(" (%02d:%02d %s)",
2681                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
2682         }
2683         print "]</div>\n";
2684 }
2685
2686 sub git_print_page_path {
2687         my $name = shift;
2688         my $type = shift;
2689         my $hb = shift;
2690
2691
2692         print "<div class=\"page_path\">";
2693         print $cgi->a({-href => href(action=>"tree", hash_base=>$hb),
2694                       -title => 'tree root'}, to_utf8("[$project]"));
2695         print " / ";
2696         if (defined $name) {
2697                 my @dirname = split '/', $name;
2698                 my $basename = pop @dirname;
2699                 my $fullname = '';
2700
2701                 foreach my $dir (@dirname) {
2702                         $fullname .= ($fullname ? '/' : '') . $dir;
2703                         print $cgi->a({-href => href(action=>"tree", file_name=>$fullname,
2704                                                      hash_base=>$hb),
2705                                       -title => $fullname}, esc_path($dir));
2706                         print " / ";
2707                 }
2708                 if (defined $type && $type eq 'blob') {
2709                         print $cgi->a({-href => href(action=>"blob_plain", file_name=>$file_name,
2710                                                      hash_base=>$hb),
2711                                       -title => $name}, esc_path($basename));
2712                 } elsif (defined $type && $type eq 'tree') {
2713                         print $cgi->a({-href => href(action=>"tree", file_name=>$file_name,
2714                                                      hash_base=>$hb),
2715                                       -title => $name}, esc_path($basename));
2716                         print " / ";
2717                 } else {
2718                         print esc_path($basename);
2719                 }
2720         }
2721         print "<br/></div>\n";
2722 }
2723
2724 # sub git_print_log (\@;%) {
2725 sub git_print_log ($;%) {
2726         my $log = shift;
2727         my %opts = @_;
2728
2729         if ($opts{'-remove_title'}) {
2730                 # remove title, i.e. first line of log
2731                 shift @$log;
2732         }
2733         # remove leading empty lines
2734         while (defined $log->[0] && $log->[0] eq "") {
2735                 shift @$log;
2736         }
2737
2738         # print log
2739         my $signoff = 0;
2740         my $empty = 0;
2741         foreach my $line (@$log) {
2742                 if ($line =~ m/^ *(signed[ \-]off[ \-]by[ :]|acked[ \-]by[ :]|cc[ :])/i) {
2743                         $signoff = 1;
2744                         $empty = 0;
2745                         if (! $opts{'-remove_signoff'}) {
2746                                 print "<span class=\"signoff\">" . esc_html($line) . "</span><br/>\n";
2747                                 next;
2748                         } else {
2749                                 # remove signoff lines
2750                                 next;
2751                         }
2752                 } else {
2753                         $signoff = 0;
2754                 }
2755
2756                 # print only one empty line
2757                 # do not print empty line after signoff
2758                 if ($line eq "") {
2759                         next if ($empty || $signoff);
2760                         $empty = 1;
2761                 } else {
2762                         $empty = 0;
2763                 }
2764
2765                 print format_log_line_html($line) . "<br/>\n";
2766         }
2767
2768         if ($opts{'-final_empty_line'}) {
2769                 # end with single empty line
2770                 print "<br/>\n" unless $empty;
2771         }
2772 }
2773
2774 # return link target (what link points to)
2775 sub git_get_link_target {
2776         my $hash = shift;
2777         my $link_target;
2778
2779         # read link
2780         open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
2781                 or return;
2782         {
2783                 local $/;
2784                 $link_target = <$fd>;
2785         }
2786         close $fd
2787                 or return;
2788
2789         return $link_target;
2790 }
2791
2792 # given link target, and the directory (basedir) the link is in,
2793 # return target of link relative to top directory (top tree);
2794 # return undef if it is not possible (including absolute links).
2795 sub normalize_link_target {
2796         my ($link_target, $basedir, $hash_base) = @_;
2797
2798         # we can normalize symlink target only if $hash_base is provided
2799         return unless $hash_base;
2800
2801         # absolute symlinks (beginning with '/') cannot be normalized
2802         return if (substr($link_target, 0, 1) eq '/');
2803
2804         # normalize link target to path from top (root) tree (dir)
2805         my $path;
2806         if ($basedir) {
2807                 $path = $basedir . '/' . $link_target;
2808         } else {
2809                 # we are in top (root) tree (dir)
2810                 $path = $link_target;
2811         }
2812
2813         # remove //, /./, and /../
2814         my @path_parts;
2815         foreach my $part (split('/', $path)) {
2816                 # discard '.' and ''
2817                 next if (!$part || $part eq '.');
2818                 # handle '..'
2819                 if ($part eq '..') {
2820                         if (@path_parts) {
2821                                 pop @path_parts;
2822                         } else {
2823                                 # link leads outside repository (outside top dir)
2824                                 return;
2825                         }
2826                 } else {
2827                         push @path_parts, $part;
2828                 }
2829         }
2830         $path = join('/', @path_parts);
2831
2832         return $path;
2833 }
2834
2835 # print tree entry (row of git_tree), but without encompassing <tr> element
2836 sub git_print_tree_entry {
2837         my ($t, $basedir, $hash_base, $have_blame) = @_;
2838
2839         my %base_key = ();
2840         $base_key{'hash_base'} = $hash_base if defined $hash_base;
2841
2842         # The format of a table row is: mode list link.  Where mode is
2843         # the mode of the entry, list is the name of the entry, an href,
2844         # and link is the action links of the entry.
2845
2846         print "<td class=\"mode\">" . mode_str($t->{'mode'}) . "</td>\n";
2847         if ($t->{'type'} eq "blob") {
2848                 print "<td class=\"list\">" .
2849                         $cgi->a({-href => href(action=>"blob", hash=>$t->{'hash'},
2850                                                file_name=>"$basedir$t->{'name'}", %base_key),
2851                                 -class => "list"}, esc_path($t->{'name'}));
2852                 if (S_ISLNK(oct $t->{'mode'})) {
2853                         my $link_target = git_get_link_target($t->{'hash'});
2854                         if ($link_target) {
2855                                 my $norm_target = normalize_link_target($link_target, $basedir, $hash_base);
2856                                 if (defined $norm_target) {
2857                                         print " -> " .
2858                                               $cgi->a({-href => href(action=>"object", hash_base=>$hash_base,
2859                                                                      file_name=>$norm_target),
2860                                                        -title => $norm_target}, esc_path($link_target));
2861                                 } else {
2862                                         print " -> " . esc_path($link_target);
2863                                 }
2864                         }
2865                 }
2866                 print "</td>\n";
2867                 print "<td class=\"link\">";
2868                 print $cgi->a({-href => href(action=>"blob", hash=>$t->{'hash'},
2869                                              file_name=>"$basedir$t->{'name'}", %base_key)},
2870                               "blob");
2871                 if ($have_blame) {
2872                         print " | " .
2873                               $cgi->a({-href => href(action=>"blame", hash=>$t->{'hash'},
2874                                                      file_name=>"$basedir$t->{'name'}", %base_key)},
2875                                       "blame");
2876                 }
2877                 if (defined $hash_base) {
2878                         print " | " .
2879                               $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
2880                                                      hash=>$t->{'hash'}, file_name=>"$basedir$t->{'name'}")},
2881                                       "history");
2882                 }
2883                 print " | " .
2884                         $cgi->a({-href => href(action=>"blob_plain", hash_base=>$hash_base,
2885                                                file_name=>"$basedir$t->{'name'}")},
2886                                 "raw");
2887                 print "</td>\n";
2888
2889         } elsif ($t->{'type'} eq "tree") {
2890                 print "<td class=\"list\">";
2891                 print $cgi->a({-href => href(action=>"tree", hash=>$t->{'hash'},
2892                                              file_name=>"$basedir$t->{'name'}", %base_key)},
2893                               esc_path($t->{'name'}));
2894                 print "</td>\n";
2895                 print "<td class=\"link\">";
2896                 print $cgi->a({-href => href(action=>"tree", hash=>$t->{'hash'},
2897                                              file_name=>"$basedir$t->{'name'}", %base_key)},
2898                               "tree");
2899                 if (defined $hash_base) {
2900                         print " | " .
2901                               $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
2902                                                      file_name=>"$basedir$t->{'name'}")},
2903                                       "history");
2904                 }
2905                 print "</td>\n";
2906         } else {
2907                 # unknown object: we can only present history for it
2908                 # (this includes 'commit' object, i.e. submodule support)
2909                 print "<td class=\"list\">" .
2910                       esc_path($t->{'name'}) .
2911                       "</td>\n";
2912                 print "<td class=\"link\">";
2913                 if (defined $hash_base) {
2914                         print $cgi->a({-href => href(action=>"history",
2915                                                      hash_base=>$hash_base,
2916                                                      file_name=>"$basedir$t->{'name'}")},
2917                                       "history");
2918                 }
2919                 print "</td>\n";
2920         }
2921 }
2922
2923 ## ......................................................................
2924 ## functions printing large fragments of HTML
2925
2926 # get pre-image filenames for merge (combined) diff
2927 sub fill_from_file_info {
2928         my ($diff, @parents) = @_;
2929
2930         $diff->{'from_file'} = [ ];
2931         $diff->{'from_file'}[$diff->{'nparents'} - 1] = undef;
2932         for (my $i = 0; $i < $diff->{'nparents'}; $i++) {
2933                 if ($diff->{'status'}[$i] eq 'R' ||
2934                     $diff->{'status'}[$i] eq 'C') {
2935                         $diff->{'from_file'}[$i] =
2936                                 git_get_path_by_hash($parents[$i], $diff->{'from_id'}[$i]);
2937                 }
2938         }
2939
2940         return $diff;
2941 }
2942
2943 # is current raw difftree line of file deletion
2944 sub is_deleted {
2945         my $diffinfo = shift;
2946
2947         return $diffinfo->{'status_str'} =~ /D/;
2948 }
2949
2950 # does patch correspond to [previous] difftree raw line
2951 # $diffinfo  - hashref of parsed raw diff format
2952 # $patchinfo - hashref of parsed patch diff format
2953 #              (the same keys as in $diffinfo)
2954 sub is_patch_split {
2955         my ($diffinfo, $patchinfo) = @_;
2956
2957         return defined $diffinfo && defined $patchinfo
2958                 && $diffinfo->{'to_file'} eq $patchinfo->{'to_file'};
2959 }
2960
2961
2962 sub git_difftree_body {
2963         my ($difftree, $hash, @parents) = @_;
2964         my ($parent) = $parents[0];
2965         my ($have_blame) = gitweb_check_feature('blame');
2966         print "<div class=\"list_head\">\n";
2967         if ($#{$difftree} > 10) {
2968                 print(($#{$difftree} + 1) . " files changed:\n");
2969         }
2970         print "</div>\n";
2971
2972         print "<table class=\"" .
2973               (@parents > 1 ? "combined " : "") .
2974               "diff_tree\">\n";
2975
2976         # header only for combined diff in 'commitdiff' view
2977         my $has_header = @$difftree && @parents > 1 && $action eq 'commitdiff';
2978         if ($has_header) {
2979                 # table header
2980                 print "<thead><tr>\n" .
2981                        "<th></th><th></th>\n"; # filename, patchN link
2982                 for (my $i = 0; $i < @parents; $i++) {
2983                         my $par = $parents[$i];
2984                         print "<th>" .
2985                               $cgi->a({-href => href(action=>"commitdiff",
2986                                                      hash=>$hash, hash_parent=>$par),
2987                                        -title => 'commitdiff to parent number ' .
2988                                                   ($i+1) . ': ' . substr($par,0,7)},
2989                                       $i+1) .
2990                               "&nbsp;</th>\n";
2991                 }
2992                 print "</tr></thead>\n<tbody>\n";
2993         }
2994
2995         my $alternate = 1;
2996         my $patchno = 0;
2997         foreach my $line (@{$difftree}) {
2998                 my $diff = parsed_difftree_line($line);
2999
3000                 if ($alternate) {
3001                         print "<tr class=\"dark\">\n";
3002                 } else {
3003                         print "<tr class=\"light\">\n";
3004                 }
3005                 $alternate ^= 1;
3006
3007                 if (exists $diff->{'nparents'}) { # combined diff
3008
3009                         fill_from_file_info($diff, @parents)
3010                                 unless exists $diff->{'from_file'};
3011
3012                         if (!is_deleted($diff)) {
3013                                 # file exists in the result (child) commit
3014                                 print "<td>" .
3015                                       $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
3016                                                              file_name=>$diff->{'to_file'},
3017                                                              hash_base=>$hash),
3018                                               -class => "list"}, esc_path($diff->{'to_file'})) .
3019                                       "</td>\n";
3020                         } else {
3021                                 print "<td>" .
3022                                       esc_path($diff->{'to_file'}) .
3023                                       "</td>\n";
3024                         }
3025
3026                         if ($action eq 'commitdiff') {
3027                                 # link to patch
3028                                 $patchno++;
3029                                 print "<td class=\"link\">" .
3030                                       $cgi->a({-href => "#patch$patchno"}, "patch") .
3031                                       " | " .
3032                                       "</td>\n";
3033                         }
3034
3035                         my $has_history = 0;
3036                         my $not_deleted = 0;
3037                         for (my $i = 0; $i < $diff->{'nparents'}; $i++) {
3038                                 my $hash_parent = $parents[$i];
3039                                 my $from_hash = $diff->{'from_id'}[$i];
3040                                 my $from_path = $diff->{'from_file'}[$i];
3041                                 my $status = $diff->{'status'}[$i];
3042
3043                                 $has_history ||= ($status ne 'A');
3044                                 $not_deleted ||= ($status ne 'D');
3045
3046                                 if ($status eq 'A') {
3047                                         print "<td  class=\"link\" align=\"right\"> | </td>\n";
3048                                 } elsif ($status eq 'D') {
3049                                         print "<td class=\"link\">" .
3050                                               $cgi->a({-href => href(action=>"blob",
3051                                                                      hash_base=>$hash,
3052                                                                      hash=>$from_hash,
3053                                                                      file_name=>$from_path)},
3054                                                       "blob" . ($i+1)) .
3055                                               " | </td>\n";
3056                                 } else {
3057                                         if ($diff->{'to_id'} eq $from_hash) {
3058                                                 print "<td class=\"link nochange\">";
3059                                         } else {
3060                                                 print "<td class=\"link\">";
3061                                         }
3062                                         print $cgi->a({-href => href(action=>"blobdiff",
3063                                                                      hash=>$diff->{'to_id'},
3064                                                                      hash_parent=>$from_hash,
3065                                                                      hash_base=>$hash,
3066                                                                      hash_parent_base=>$hash_parent,
3067                                                                      file_name=>$diff->{'to_file'},
3068                                                                      file_parent=>$from_path)},
3069                                                       "diff" . ($i+1)) .
3070                                               " | </td>\n";
3071                                 }
3072                         }
3073
3074                         print "<td class=\"link\">";
3075                         if ($not_deleted) {
3076                                 print $cgi->a({-href => href(action=>"blob",
3077                                                              hash=>$diff->{'to_id'},
3078                                                              file_name=>$diff->{'to_file'},
3079                                                              hash_base=>$hash)},
3080                                               "blob");
3081                                 print " | " if ($has_history);
3082                         }
3083                         if ($has_history) {
3084                                 print $cgi->a({-href => href(action=>"history",
3085                                                              file_name=>$diff->{'to_file'},
3086                                                              hash_base=>$hash)},
3087                                               "history");
3088                         }
3089                         print "</td>\n";
3090
3091                         print "</tr>\n";
3092                         next; # instead of 'else' clause, to avoid extra indent
3093                 }
3094                 # else ordinary diff
3095
3096                 my ($to_mode_oct, $to_mode_str, $to_file_type);
3097                 my ($from_mode_oct, $from_mode_str, $from_file_type);
3098                 if ($diff->{'to_mode'} ne ('0' x 6)) {
3099                         $to_mode_oct = oct $diff->{'to_mode'};
3100                         if (S_ISREG($to_mode_oct)) { # only for regular file
3101                                 $to_mode_str = sprintf("%04o", $to_mode_oct & 0777); # permission bits
3102                         }
3103                         $to_file_type = file_type($diff->{'to_mode'});
3104                 }
3105                 if ($diff->{'from_mode'} ne ('0' x 6)) {
3106                         $from_mode_oct = oct $diff->{'from_mode'};
3107                         if (S_ISREG($to_mode_oct)) { # only for regular file
3108                                 $from_mode_str = sprintf("%04o", $from_mode_oct & 0777); # permission bits
3109                         }
3110                         $from_file_type = file_type($diff->{'from_mode'});
3111                 }
3112
3113                 if ($diff->{'status'} eq "A") { # created
3114                         my $mode_chng = "<span class=\"file_status new\">[new $to_file_type";
3115                         $mode_chng   .= " with mode: $to_mode_str" if $to_mode_str;
3116                         $mode_chng   .= "]</span>";
3117                         print "<td>";
3118                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
3119                                                      hash_base=>$hash, file_name=>$diff->{'file'}),
3120                                       -class => "list"}, esc_path($diff->{'file'}));
3121                         print "</td>\n";
3122                         print "<td>$mode_chng</td>\n";
3123                         print "<td class=\"link\">";
3124                         if ($action eq 'commitdiff') {
3125                                 # link to patch
3126                                 $patchno++;
3127                                 print $cgi->a({-href => "#patch$patchno"}, "patch");
3128                                 print " | ";
3129                         }
3130                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
3131                                                      hash_base=>$hash, file_name=>$diff->{'file'})},
3132                                       "blob");
3133                         print "</td>\n";
3134
3135                 } elsif ($diff->{'status'} eq "D") { # deleted
3136                         my $mode_chng = "<span class=\"file_status deleted\">[deleted $from_file_type]</span>";
3137                         print "<td>";
3138                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'from_id'},
3139                                                      hash_base=>$parent, file_name=>$diff->{'file'}),
3140                                        -class => "list"}, esc_path($diff->{'file'}));
3141                         print "</td>\n";
3142                         print "<td>$mode_chng</td>\n";
3143                         print "<td class=\"link\">";
3144                         if ($action eq 'commitdiff') {
3145                                 # link to patch
3146                                 $patchno++;
3147                                 print $cgi->a({-href => "#patch$patchno"}, "patch");
3148                                 print " | ";
3149                         }
3150                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'from_id'},
3151                                                      hash_base=>$parent, file_name=>$diff->{'file'})},
3152                                       "blob") . " | ";
3153                         if ($have_blame) {
3154                                 print $cgi->a({-href => href(action=>"blame", hash_base=>$parent,
3155                                                              file_name=>$diff->{'file'})},
3156                                               "blame") . " | ";
3157                         }
3158                         print $cgi->a({-href => href(action=>"history", hash_base=>$parent,
3159                                                      file_name=>$diff->{'file'})},
3160                                       "history");
3161                         print "</td>\n";
3162
3163                 } elsif ($diff->{'status'} eq "M" || $diff->{'status'} eq "T") { # modified, or type changed
3164                         my $mode_chnge = "";
3165                         if ($diff->{'from_mode'} != $diff->{'to_mode'}) {
3166                                 $mode_chnge = "<span class=\"file_status mode_chnge\">[changed";
3167                                 if ($from_file_type ne $to_file_type) {
3168                                         $mode_chnge .= " from $from_file_type to $to_file_type";
3169                                 }
3170                                 if (($from_mode_oct & 0777) != ($to_mode_oct & 0777)) {
3171                                         if ($from_mode_str && $to_mode_str) {
3172                                                 $mode_chnge .= " mode: $from_mode_str->$to_mode_str";
3173                                         } elsif ($to_mode_str) {
3174                                                 $mode_chnge .= " mode: $to_mode_str";
3175                                         }
3176                                 }
3177                                 $mode_chnge .= "]</span>\n";
3178                         }
3179                         print "<td>";
3180                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
3181                                                      hash_base=>$hash, file_name=>$diff->{'file'}),
3182                                       -class => "list"}, esc_path($diff->{'file'}));
3183                         print "</td>\n";
3184                         print "<td>$mode_chnge</td>\n";
3185                         print "<td class=\"link\">";
3186                         if ($action eq 'commitdiff') {
3187                                 # link to patch
3188                                 $patchno++;
3189                                 print $cgi->a({-href => "#patch$patchno"}, "patch") .
3190                                       " | ";
3191                         } elsif ($diff->{'to_id'} ne $diff->{'from_id'}) {
3192                                 # "commit" view and modified file (not onlu mode changed)
3193                                 print $cgi->a({-href => href(action=>"blobdiff",
3194                                                              hash=>$diff->{'to_id'}, hash_parent=>$diff->{'from_id'},
3195                                                              hash_base=>$hash, hash_parent_base=>$parent,
3196                                                              file_name=>$diff->{'file'})},
3197                                               "diff") .
3198                                       " | ";
3199                         }
3200                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
3201                                                      hash_base=>$hash, file_name=>$diff->{'file'})},
3202                                        "blob") . " | ";
3203                         if ($have_blame) {
3204                                 print $cgi->a({-href => href(action=>"blame", hash_base=>$hash,
3205                                                              file_name=>$diff->{'file'})},
3206                                               "blame") . " | ";
3207                         }
3208                         print $cgi->a({-href => href(action=>"history", hash_base=>$hash,
3209                                                      file_name=>$diff->{'file'})},
3210                                       "history");
3211                         print "</td>\n";
3212
3213                 } elsif ($diff->{'status'} eq "R" || $diff->{'status'} eq "C") { # renamed or copied
3214                         my %status_name = ('R' => 'moved', 'C' => 'copied');
3215                         my $nstatus = $status_name{$diff->{'status'}};
3216                         my $mode_chng = "";
3217                         if ($diff->{'from_mode'} != $diff->{'to_mode'}) {
3218                                 # mode also for directories, so we cannot use $to_mode_str
3219                                 $mode_chng = sprintf(", mode: %04o", $to_mode_oct & 0777);
3220                         }
3221                         print "<td>" .
3222                               $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
3223                                                      hash=>$diff->{'to_id'}, file_name=>$diff->{'to_file'}),
3224                                       -class => "list"}, esc_path($diff->{'to_file'})) . "</td>\n" .
3225                               "<td><span class=\"file_status $nstatus\">[$nstatus from " .
3226                               $cgi->a({-href => href(action=>"blob", hash_base=>$parent,
3227                                                      hash=>$diff->{'from_id'}, file_name=>$diff->{'from_file'}),
3228                                       -class => "list"}, esc_path($diff->{'from_file'})) .
3229                               " with " . (int $diff->{'similarity'}) . "% similarity$mode_chng]</span></td>\n" .
3230                               "<td class=\"link\">";
3231                         if ($action eq 'commitdiff') {
3232                                 # link to patch
3233                                 $patchno++;
3234                                 print $cgi->a({-href => "#patch$patchno"}, "patch") .
3235                                       " | ";
3236                         } elsif ($diff->{'to_id'} ne $diff->{'from_id'}) {
3237                                 # "commit" view and modified file (not only pure rename or copy)
3238                                 print $cgi->a({-href => href(action=>"blobdiff",
3239                                                              hash=>$diff->{'to_id'}, hash_parent=>$diff->{'from_id'},
3240                                                              hash_base=>$hash, hash_parent_base=>$parent,
3241                                                              file_name=>$diff->{'to_file'}, file_parent=>$diff->{'from_file'})},
3242                                               "diff") .
3243                                       " | ";
3244                         }
3245                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
3246                                                      hash_base=>$parent, file_name=>$diff->{'to_file'})},
3247                                       "blob") . " | ";
3248                         if ($have_blame) {
3249                                 print $cgi->a({-href => href(action=>"blame", hash_base=>$hash,
3250                                                              file_name=>$diff->{'to_file'})},
3251                                               "blame") . " | ";
3252                         }
3253                         print $cgi->a({-href => href(action=>"history", hash_base=>$hash,
3254                                                     file_name=>$diff->{'to_file'})},
3255                                       "history");
3256                         print "</td>\n";
3257
3258                 } # we should not encounter Unmerged (U) or Unknown (X) status
3259                 print "</tr>\n";
3260         }
3261         print "</tbody>" if $has_header;
3262         print "</table>\n";
3263 }
3264
3265 sub git_patchset_body {
3266         my ($fd, $difftree, $hash, @hash_parents) = @_;
3267         my ($hash_parent) = $hash_parents[0];
3268
3269         my $is_combined = (@hash_parents > 1);
3270         my $patch_idx = 0;
3271         my $patch_number = 0;
3272         my $patch_line;
3273         my $diffinfo;
3274         my $to_name;
3275         my (%from, %to);
3276
3277         print "<div class=\"patchset\">\n";
3278
3279         # skip to first patch
3280         while ($patch_line = <$fd>) {
3281                 chomp $patch_line;
3282
3283                 last if ($patch_line =~ m/^diff /);
3284         }
3285
3286  PATCH:
3287         while ($patch_line) {
3288
3289                 # parse "git diff" header line
3290                 if ($patch_line =~ m/^diff --git (\"(?:[^\\\"]*(?:\\.[^\\\"]*)*)\"|[^ "]*) (.*)$/) {
3291                         # $1 is from_name, which we do not use
3292                         $to_name = unquote($2);
3293                         $to_name =~ s!^b/!!;
3294                 } elsif ($patch_line =~ m/^diff --(cc|combined) ("?.*"?)$/) {
3295                         # $1 is 'cc' or 'combined', which we do not use
3296                         $to_name = unquote($2);
3297                 } else {
3298                         $to_name = undef;
3299                 }
3300
3301                 # check if current patch belong to current raw line
3302                 # and parse raw git-diff line if needed
3303                 if (is_patch_split($diffinfo, { 'to_file' => $to_name })) {
3304                         # this is continuation of a split patch
3305                         print "<div class=\"patch cont\">\n";
3306                 } else {
3307                         # advance raw git-diff output if needed
3308                         $patch_idx++ if defined $diffinfo;
3309
3310                         # read and prepare patch information
3311                         $diffinfo = parsed_difftree_line($difftree->[$patch_idx]);
3312
3313                         # compact combined diff output can have some patches skipped
3314                         # find which patch (using pathname of result) we are at now;
3315                         if ($is_combined) {
3316                                 while ($to_name ne $diffinfo->{'to_file'}) {
3317                                         print "<div class=\"patch\" id=\"patch". ($patch_idx+1) ."\">\n" .
3318                                               format_diff_cc_simplified($diffinfo, @hash_parents) .
3319                                               "</div>\n";  # class="patch"
3320
3321                                         $patch_idx++;
3322                                         $patch_number++;
3323
3324                                         last if $patch_idx > $#$difftree;
3325                                         $diffinfo = parsed_difftree_line($difftree->[$patch_idx]);
3326                                 }
3327                         }
3328
3329                         # modifies %from, %to hashes
3330                         parse_from_to_diffinfo($diffinfo, \%from, \%to, @hash_parents);
3331
3332                         # this is first patch for raw difftree line with $patch_idx index
3333                         # we index @$difftree array from 0, but number patches from 1
3334                         print "<div class=\"patch\" id=\"patch". ($patch_idx+1) ."\">\n";
3335                 }
3336
3337                 # git diff header
3338                 #assert($patch_line =~ m/^diff /) if DEBUG;
3339                 #assert($patch_line !~ m!$/$!) if DEBUG; # is chomp-ed
3340                 $patch_number++;
3341                 # print "git diff" header
3342                 print format_git_diff_header_line($patch_line, $diffinfo,
3343                                                   \%from, \%to);
3344
3345                 # print extended diff header
3346                 print "<div class=\"diff extended_header\">\n";
3347         EXTENDED_HEADER:
3348                 while ($patch_line = <$fd>) {
3349                         chomp $patch_line;
3350
3351                         last EXTENDED_HEADER if ($patch_line =~ m/^--- |^diff /);
3352
3353                         print format_extended_diff_header_line($patch_line, $diffinfo,
3354                                                                \%from, \%to);
3355                 }
3356                 print "</div>\n"; # class="diff extended_header"
3357
3358                 # from-file/to-file diff header
3359                 if (! $patch_line) {
3360                         print "</div>\n"; # class="patch"
3361                         last PATCH;
3362                 }
3363                 next PATCH if ($patch_line =~ m/^diff /);
3364                 #assert($patch_line =~ m/^---/) if DEBUG;
3365
3366                 my $last_patch_line = $patch_line;
3367                 $patch_line = <$fd>;
3368                 chomp $patch_line;
3369                 #assert($patch_line =~ m/^\+\+\+/) if DEBUG;
3370
3371                 print format_diff_from_to_header($last_patch_line, $patch_line,
3372                                                  $diffinfo, \%from, \%to,
3373                                                  @hash_parents);
3374
3375                 # the patch itself
3376         LINE:
3377                 while ($patch_line = <$fd>) {
3378                         chomp $patch_line;
3379
3380                         next PATCH if ($patch_line =~ m/^diff /);
3381
3382                         print format_diff_line($patch_line, \%from, \%to);
3383                 }
3384
3385         } continue {
3386                 print "</div>\n"; # class="patch"
3387         }
3388
3389         # for compact combined (--cc) format, with chunk and patch simpliciaction
3390         # patchset might be empty, but there might be unprocessed raw lines
3391         for (++$patch_idx if $patch_number > 0;
3392              $patch_idx < @$difftree;
3393              ++$patch_idx) {
3394                 # read and prepare patch information
3395                 $diffinfo = parsed_difftree_line($difftree->[$patch_idx]);
3396
3397                 # generate anchor for "patch" links in difftree / whatchanged part
3398                 print "<div class=\"patch\" id=\"patch". ($patch_idx+1) ."\">\n" .
3399                       format_diff_cc_simplified($diffinfo, @hash_parents) .
3400                       "</div>\n";  # class="patch"
3401
3402                 $patch_number++;
3403         }
3404
3405         if ($patch_number == 0) {
3406                 if (@hash_parents > 1) {
3407                         print "<div class=\"diff nodifferences\">Trivial merge</div>\n";
3408                 } else {
3409                         print "<div class=\"diff nodifferences\">No differences found</div>\n";
3410                 }
3411         }
3412
3413         print "</div>\n"; # class="patchset"
3414 }
3415
3416 # . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3417
3418 sub git_project_list_body {
3419         my ($projlist, $order, $from, $to, $extra, $no_header) = @_;
3420
3421         my ($check_forks) = gitweb_check_feature('forks');
3422
3423         my @projects;
3424         foreach my $pr (@$projlist) {
3425                 my (@aa) = git_get_last_activity($pr->{'path'});
3426                 unless (@aa) {
3427                         next;
3428                 }
3429                 ($pr->{'age'}, $pr->{'age_string'}) = @aa;
3430                 if (!defined $pr->{'descr'}) {
3431                         my $descr = git_get_project_description($pr->{'path'}) || "";
3432                         $pr->{'descr_long'} = to_utf8($descr);
3433                         $pr->{'descr'} = chop_str($descr, $projects_list_description_width, 5);
3434                 }
3435                 if (!defined $pr->{'owner'}) {
3436                         $pr->{'owner'} = git_get_project_owner("$pr->{'path'}") || "";
3437                 }
3438                 if ($check_forks) {
3439                         my $pname = $pr->{'path'};
3440                         if (($pname =~ s/\.git$//) &&
3441                             ($pname !~ /\/$/) &&
3442                             (-d "$projectroot/$pname")) {
3443                                 $pr->{'forks'} = "-d $projectroot/$pname";
3444                         }
3445                         else {
3446                                 $pr->{'forks'} = 0;
3447                         }
3448                 }
3449                 push @projects, $pr;
3450         }
3451
3452         $order ||= $default_projects_order;
3453         $from = 0 unless defined $from;
3454         $to = $#projects if (!defined $to || $#projects < $to);
3455
3456         print "<table class=\"project_list\">\n";
3457         unless ($no_header) {
3458                 print "<tr>\n";
3459                 if ($check_forks) {
3460                         print "<th></th>\n";
3461                 }
3462                 if ($order eq "project") {
3463                         @projects = sort {$a->{'path'} cmp $b->{'path'}} @projects;
3464                         print "<th>Project</th>\n";
3465                 } else {
3466                         print "<th>" .
3467                               $cgi->a({-href => href(project=>undef, order=>'project'),
3468                                        -class => "header"}, "Project") .
3469                               "</th>\n";
3470                 }
3471                 if ($order eq "descr") {
3472                         @projects = sort {$a->{'descr'} cmp $b->{'descr'}} @projects;
3473                         print "<th>Description</th>\n";
3474                 } else {
3475                         print "<th>" .
3476                               $cgi->a({-href => href(project=>undef, order=>'descr'),
3477                                        -class => "header"}, "Description") .
3478                               "</th>\n";
3479                 }
3480                 if ($order eq "owner") {
3481                         @projects = sort {$a->{'owner'} cmp $b->{'owner'}} @projects;
3482                         print "<th>Owner</th>\n";
3483                 } else {
3484                         print "<th>" .
3485                               $cgi->a({-href => href(project=>undef, order=>'owner'),
3486                                        -class => "header"}, "Owner") .
3487                               "</th>\n";
3488                 }
3489                 if ($order eq "age") {
3490                         @projects = sort {$a->{'age'} <=> $b->{'age'}} @projects;
3491                         print "<th>Last Change</th>\n";
3492                 } else {
3493                         print "<th>" .
3494                               $cgi->a({-href => href(project=>undef, order=>'age'),
3495                                        -class => "header"}, "Last Change") .
3496                               "</th>\n";
3497                 }
3498                 print "<th></th>\n" .
3499                       "</tr>\n";
3500         }
3501         my $alternate = 1;
3502         for (my $i = $from; $i <= $to; $i++) {
3503                 my $pr = $projects[$i];
3504                 if ($alternate) {
3505                         print "<tr class=\"dark\">\n";
3506                 } else {
3507                         print "<tr class=\"light\">\n";
3508                 }
3509                 $alternate ^= 1;
3510                 if ($check_forks) {
3511                         print "<td>";
3512                         if ($pr->{'forks'}) {
3513                                 print "<!-- $pr->{'forks'} -->\n";
3514                                 print $cgi->a({-href => href(project=>$pr->{'path'}, action=>"forks")}, "+");
3515                         }
3516                         print "</td>\n";
3517                 }
3518                 print "<td>" . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary"),
3519                                         -class => "list"}, esc_html($pr->{'path'})) . "</td>\n" .
3520                       "<td>" . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary"),
3521                                         -class => "list", -title => $pr->{'descr_long'}},
3522                                         esc_html($pr->{'descr'})) . "</td>\n" .
3523                       "<td><i>" . chop_and_escape_str($pr->{'owner'}, 15) . "</i></td>\n";
3524                 print "<td class=\"". age_class($pr->{'age'}) . "\">" .
3525                       (defined $pr->{'age_string'} ? $pr->{'age_string'} : "No commits") . "</td>\n" .
3526                       "<td class=\"link\">" .
3527                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary")}, "summary")   . " | " .
3528                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"shortlog")}, "shortlog") . " | " .
3529                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"log")}, "log") . " | " .
3530                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"tree")}, "tree") .
3531                       ($pr->{'forks'} ? " | " . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"forks")}, "forks") : '') .
3532                       "</td>\n" .
3533                       "</tr>\n";
3534         }
3535         if (defined $extra) {
3536                 print "<tr>\n";
3537                 if ($check_forks) {
3538                         print "<td></td>\n";
3539                 }
3540                 print "<td colspan=\"5\">$extra</td>\n" .
3541                       "</tr>\n";
3542         }
3543         print "</table>\n";
3544 }
3545
3546 sub git_shortlog_body {
3547         # uses global variable $project
3548         my ($commitlist, $from, $to, $refs, $extra) = @_;
3549
3550         $from = 0 unless defined $from;
3551         $to = $#{$commitlist} if (!defined $to || $#{$commitlist} < $to);
3552
3553         print "<table class=\"shortlog\">\n";
3554         my $alternate = 1;
3555         for (my $i = $from; $i <= $to; $i++) {
3556                 my %co = %{$commitlist->[$i]};
3557                 my $commit = $co{'id'};
3558                 my $ref = format_ref_marker($refs, $commit);
3559                 if ($alternate) {
3560                         print "<tr class=\"dark\">\n";
3561                 } else {
3562                         print "<tr class=\"light\">\n";
3563                 }
3564                 $alternate ^= 1;
3565                 my $author = chop_and_escape_str($co{'author_name'}, 10);
3566                 # git_summary() used print "<td><i>$co{'age_string'}</i></td>\n" .
3567                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
3568                       "<td><i>" . $author . "</i></td>\n" .
3569                       "<td>";
3570                 print format_subject_html($co{'title'}, $co{'title_short'},
3571                                           href(action=>"commit", hash=>$commit), $ref);
3572                 print "</td>\n" .
3573                       "<td class=\"link\">" .
3574                       $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") . " | " .
3575                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") . " | " .
3576                       $cgi->a({-href => href(action=>"tree", hash=>$commit, hash_base=>$commit)}, "tree");
3577                 my $snapshot_links = format_snapshot_links($commit);
3578                 if (defined $snapshot_links) {
3579                         print " | " . $snapshot_links;
3580                 }
3581                 print "</td>\n" .
3582                       "</tr>\n";
3583         }
3584         if (defined $extra) {
3585                 print "<tr>\n" .
3586                       "<td colspan=\"4\">$extra</td>\n" .
3587                       "</tr>\n";
3588         }
3589         print "</table>\n";
3590 }
3591
3592 sub git_history_body {
3593         # Warning: assumes constant type (blob or tree) during history
3594         my ($commitlist, $from, $to, $refs, $hash_base, $ftype, $extra) = @_;
3595
3596         $from = 0 unless defined $from;
3597         $to = $#{$commitlist} unless (defined $to && $to <= $#{$commitlist});
3598
3599         print "<table class=\"history\">\n";
3600         my $alternate = 1;
3601         for (my $i = $from; $i <= $to; $i++) {
3602                 my %co = %{$commitlist->[$i]};
3603                 if (!%co) {
3604                         next;
3605                 }
3606                 my $commit = $co{'id'};
3607
3608                 my $ref = format_ref_marker($refs, $commit);
3609
3610                 if ($alternate) {
3611                         print "<tr class=\"dark\">\n";
3612                 } else {
3613                         print "<tr class=\"light\">\n";
3614                 }
3615                 $alternate ^= 1;
3616         # shortlog uses      chop_str($co{'author_name'}, 10)
3617                 my $author = chop_and_escape_str($co{'author_name'}, 15, 3);
3618                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
3619                       "<td><i>" . $author . "</i></td>\n" .
3620                       "<td>";
3621                 # originally git_history used chop_str($co{'title'}, 50)
3622                 print format_subject_html($co{'title'}, $co{'title_short'},
3623                                           href(action=>"commit", hash=>$commit), $ref);
3624                 print "</td>\n" .
3625                       "<td class=\"link\">" .
3626                       $cgi->a({-href => href(action=>$ftype, hash_base=>$commit, file_name=>$file_name)}, $ftype) . " | " .
3627                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff");
3628
3629                 if ($ftype eq 'blob') {
3630                         my $blob_current = git_get_hash_by_path($hash_base, $file_name);
3631                         my $blob_parent  = git_get_hash_by_path($commit, $file_name);
3632                         if (defined $blob_current && defined $blob_parent &&
3633                                         $blob_current ne $blob_parent) {
3634                                 print " | " .
3635                                         $cgi->a({-href => href(action=>"blobdiff",
3636                                                                hash=>$blob_current, hash_parent=>$blob_parent,
3637                                                                hash_base=>$hash_base, hash_parent_base=>$commit,
3638                                                                file_name=>$file_name)},
3639                                                 "diff to current");
3640                         }
3641                 }
3642                 print "</td>\n" .
3643                       "</tr>\n";
3644         }
3645         if (defined $extra) {
3646                 print "<tr>\n" .
3647                       "<td colspan=\"4\">$extra</td>\n" .
3648                       "</tr>\n";
3649         }
3650         print "</table>\n";
3651 }
3652
3653 sub git_tags_body {
3654         # uses global variable $project
3655         my ($taglist, $from, $to, $extra) = @_;
3656         $from = 0 unless defined $from;
3657         $to = $#{$taglist} if (!defined $to || $#{$taglist} < $to);
3658
3659         print "<table class=\"tags\">\n";
3660         my $alternate = 1;
3661         for (my $i = $from; $i <= $to; $i++) {
3662                 my $entry = $taglist->[$i];
3663                 my %tag = %$entry;
3664                 my $comment = $tag{'subject'};
3665                 my $comment_short;
3666                 if (defined $comment) {
3667                         $comment_short = chop_str($comment, 30, 5);
3668                 }
3669                 if ($alternate) {
3670                         print "<tr class=\"dark\">\n";
3671                 } else {
3672                         print "<tr class=\"light\">\n";
3673                 }
3674                 $alternate ^= 1;
3675                 if (defined $tag{'age'}) {
3676                         print "<td><i>$tag{'age'}</i></td>\n";
3677                 } else {
3678                         print "<td></td>\n";
3679                 }
3680                 print "<td>" .
3681                       $cgi->a({-href => href(action=>$tag{'reftype'}, hash=>$tag{'refid'}),
3682                                -class => "list name"}, esc_html($tag{'name'})) .
3683                       "</td>\n" .
3684                       "<td>";
3685                 if (defined $comment) {
3686                         print format_subject_html($comment, $comment_short,
3687                                                   href(action=>"tag", hash=>$tag{'id'}));
3688                 }
3689                 print "</td>\n" .
3690                       "<td class=\"selflink\">";
3691                 if ($tag{'type'} eq "tag") {
3692                         print $cgi->a({-href => href(action=>"tag", hash=>$tag{'id'})}, "tag");
3693                 } else {
3694                         print "&nbsp;";
3695                 }
3696                 print "</td>\n" .
3697                       "<td class=\"link\">" . " | " .
3698                       $cgi->a({-href => href(action=>$tag{'reftype'}, hash=>$tag{'refid'})}, $tag{'reftype'});
3699                 if ($tag{'reftype'} eq "commit") {
3700                         print " | " . $cgi->a({-href => href(action=>"shortlog", hash=>$tag{'fullname'})}, "shortlog") .
3701                               " | " . $cgi->a({-href => href(action=>"log", hash=>$tag{'fullname'})}, "log");
3702                 } elsif ($tag{'reftype'} eq "blob") {
3703                         print " | " . $cgi->a({-href => href(action=>"blob_plain", hash=>$tag{'refid'})}, "raw");
3704                 }
3705                 print "</td>\n" .
3706                       "</tr>";
3707         }
3708         if (defined $extra) {
3709                 print "<tr>\n" .
3710                       "<td colspan=\"5\">$extra</td>\n" .
3711                       "</tr>\n";
3712         }
3713         print "</table>\n";
3714 }
3715
3716 sub git_heads_body {
3717         # uses global variable $project
3718         my ($headlist, $head, $from, $to, $extra) = @_;
3719         $from = 0 unless defined $from;
3720         $to = $#{$headlist} if (!defined $to || $#{$headlist} < $to);
3721
3722         print "<table class=\"heads\">\n";
3723         my $alternate = 1;
3724         for (my $i = $from; $i <= $to; $i++) {
3725                 my $entry = $headlist->[$i];
3726                 my %ref = %$entry;
3727                 my $curr = $ref{'id'} eq $head;
3728                 if ($alternate) {
3729                         print "<tr class=\"dark\">\n";
3730                 } else {
3731                         print "<tr class=\"light\">\n";
3732                 }
3733                 $alternate ^= 1;
3734                 print "<td><i>$ref{'age'}</i></td>\n" .
3735                       ($curr ? "<td class=\"current_head\">" : "<td>") .
3736                       $cgi->a({-href => href(action=>"shortlog", hash=>$ref{'fullname'}),
3737                                -class => "list name"},esc_html($ref{'name'})) .
3738                       "</td>\n" .
3739                       "<td class=\"link\">" .
3740                       $cgi->a({-href => href(action=>"shortlog", hash=>$ref{'fullname'})}, "shortlog") . " | " .
3741                       $cgi->a({-href => href(action=>"log", hash=>$ref{'fullname'})}, "log") . " | " .
3742                       $cgi->a({-href => href(action=>"tree", hash=>$ref{'fullname'}, hash_base=>$ref{'name'})}, "tree") .
3743                       "</td>\n" .
3744                       "</tr>";
3745         }
3746         if (defined $extra) {
3747                 print "<tr>\n" .
3748                       "<td colspan=\"3\">$extra</td>\n" .
3749                       "</tr>\n";
3750         }
3751         print "</table>\n";
3752 }
3753
3754 sub git_search_grep_body {
3755         my ($commitlist, $from, $to, $extra) = @_;
3756         $from = 0 unless defined $from;
3757         $to = $#{$commitlist} if (!defined $to || $#{$commitlist} < $to);
3758
3759         print "<table class=\"commit_search\">\n";
3760         my $alternate = 1;
3761         for (my $i = $from; $i <= $to; $i++) {
3762                 my %co = %{$commitlist->[$i]};
3763                 if (!%co) {
3764                         next;
3765                 }
3766                 my $commit = $co{'id'};
3767                 if ($alternate) {
3768                         print "<tr class=\"dark\">\n";
3769                 } else {
3770                         print "<tr class=\"light\">\n";
3771                 }
3772                 $alternate ^= 1;
3773                 my $author = chop_and_escape_str($co{'author_name'}, 15, 5);
3774                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
3775                       "<td><i>" . $author . "</i></td>\n" .
3776                       "<td>" .
3777                       $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}), -class => "list subject"},
3778                                chop_and_escape_str($co{'title'}, 50) . "<br/>");
3779                 my $comment = $co{'comment'};
3780                 foreach my $line (@$comment) {
3781                         if ($line =~ m/^(.*)($search_regexp)(.*)$/i) {
3782                                 my $lead = esc_html($1) || "";
3783                                 $lead = chop_str($lead, 30, 10);
3784                                 my $match = esc_html($2) || "";
3785                                 my $trail = esc_html($3) || "";
3786                                 $trail = chop_str($trail, 30, 10);
3787                                 my $text = "$lead<span class=\"match\">$match</span>$trail";
3788                                 print chop_str($text, 80, 5) . "<br/>\n";
3789                         }
3790                 }
3791                 print "</td>\n" .
3792                       "<td class=\"link\">" .
3793                       $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})}, "commit") .
3794                       " | " .
3795                       $cgi->a({-href => href(action=>"commitdiff", hash=>$co{'id'})}, "commitdiff") .
3796                       " | " .
3797                       $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$co{'id'})}, "tree");
3798                 print "</td>\n" .
3799                       "</tr>\n";
3800         }
3801         if (defined $extra) {
3802                 print "<tr>\n" .
3803                       "<td colspan=\"3\">$extra</td>\n" .
3804                       "</tr>\n";
3805         }
3806         print "</table>\n";
3807 }
3808
3809 ## ======================================================================
3810 ## ======================================================================
3811 ## actions
3812
3813 sub git_project_list {
3814         my $order = $cgi->param('o');
3815         if (defined $order && $order !~ m/none|project|descr|owner|age/) {
3816                 die_error(undef, "Unknown order parameter");
3817         }
3818
3819         my @list = git_get_projects_list();
3820         if (!@list) {
3821                 die_error(undef, "No projects found");
3822         }
3823
3824         git_header_html();
3825         if (-f $home_text) {
3826                 print "<div class=\"index_include\">\n";
3827                 open (my $fd, $home_text);
3828                 print <$fd>;
3829                 close $fd;
3830                 print "</div>\n";
3831         }
3832         git_project_list_body(\@list, $order);
3833         git_footer_html();
3834 }
3835
3836 sub git_forks {
3837         my $order = $cgi->param('o');
3838         if (defined $order && $order !~ m/none|project|descr|owner|age/) {
3839                 die_error(undef, "Unknown order parameter");
3840         }
3841
3842         my @list = git_get_projects_list($project);
3843         if (!@list) {
3844                 die_error(undef, "No forks found");
3845         }
3846
3847         git_header_html();
3848         git_print_page_nav('','');
3849         git_print_header_div('summary', "$project forks");
3850         git_project_list_body(\@list, $order);
3851         git_footer_html();
3852 }
3853
3854 sub git_project_index {
3855         my @projects = git_get_projects_list($project);
3856
3857         print $cgi->header(
3858                 -type => 'text/plain',
3859                 -charset => 'utf-8',
3860                 -content_disposition => 'inline; filename="index.aux"');
3861
3862         foreach my $pr (@projects) {
3863                 if (!exists $pr->{'owner'}) {
3864                         $pr->{'owner'} = git_get_project_owner("$pr->{'path'}");
3865                 }
3866
3867                 my ($path, $owner) = ($pr->{'path'}, $pr->{'owner'});
3868                 # quote as in CGI::Util::encode, but keep the slash, and use '+' for ' '
3869                 $path  =~ s/([^a-zA-Z0-9_.\-\/ ])/sprintf("%%%02X", ord($1))/eg;
3870                 $owner =~ s/([^a-zA-Z0-9_.\-\/ ])/sprintf("%%%02X", ord($1))/eg;
3871                 $path  =~ s/ /\+/g;
3872                 $owner =~ s/ /\+/g;
3873
3874                 print "$path $owner\n";
3875         }
3876 }
3877
3878 sub git_summary {
3879         my $descr = git_get_project_description($project) || "none";
3880         my %co = parse_commit("HEAD");
3881         my %cd = %co ? parse_date($co{'committer_epoch'}, $co{'committer_tz'}) : ();
3882         my $head = $co{'id'};
3883
3884         my $owner = git_get_project_owner($project);
3885
3886         my $refs = git_get_references();
3887         # These get_*_list functions return one more to allow us to see if
3888         # there are more ...
3889         my @taglist  = git_get_tags_list(16);
3890         my @headlist = git_get_heads_list(16);
3891         my @forklist;
3892         my ($check_forks) = gitweb_check_feature('forks');
3893
3894         if ($check_forks) {
3895                 @forklist = git_get_projects_list($project);
3896         }
3897
3898         git_header_html();
3899         git_print_page_nav('summary','', $head);
3900
3901         print "<div class=\"title\">&nbsp;</div>\n";
3902         print "<table class=\"projects_list\">\n" .
3903               "<tr><td>description</td><td>" . esc_html($descr) . "</td></tr>\n" .
3904               "<tr><td>owner</td><td>" . esc_html($owner) . "</td></tr>\n";
3905         if (defined $cd{'rfc2822'}) {
3906                 print "<tr><td>last change</td><td>$cd{'rfc2822'}</td></tr>\n";
3907         }
3908
3909         # use per project git URL list in $projectroot/$project/cloneurl
3910         # or make project git URL from git base URL and project name
3911         my $url_tag = "URL";
3912         my @url_list = git_get_project_url_list($project);
3913         @url_list = map { "$_/$project" } @git_base_url_list unless @url_list;
3914         foreach my $git_url (@url_list) {
3915                 next unless $git_url;
3916                 print "<tr><td>$url_tag</td><td>$git_url</td></tr>\n";
3917                 $url_tag = "";
3918         }
3919         print "</table>\n";
3920
3921         if (-s "$projectroot/$project/README.html") {
3922                 if (open my $fd, "$projectroot/$project/README.html") {
3923                         print "<div class=\"title\">readme</div>\n" .
3924                               "<div class=\"readme\">\n";
3925                         print $_ while (<$fd>);
3926                         print "\n</div>\n"; # class="readme"
3927                         close $fd;
3928                 }
3929         }
3930
3931         # we need to request one more than 16 (0..15) to check if
3932         # those 16 are all
3933         my @commitlist = $head ? parse_commits($head, 17) : ();
3934         if (@commitlist) {
3935                 git_print_header_div('shortlog');
3936                 git_shortlog_body(\@commitlist, 0, 15, $refs,
3937                                   $#commitlist <=  15 ? undef :
3938                                   $cgi->a({-href => href(action=>"shortlog")}, "..."));
3939         }
3940
3941         if (@taglist) {
3942                 git_print_header_div('tags');
3943                 git_tags_body(\@taglist, 0, 15,
3944                               $#taglist <=  15 ? undef :
3945                               $cgi->a({-href => href(action=>"tags")}, "..."));
3946         }
3947
3948         if (@headlist) {
3949                 git_print_header_div('heads');
3950                 git_heads_body(\@headlist, $head, 0, 15,
3951                                $#headlist <= 15 ? undef :
3952                                $cgi->a({-href => href(action=>"heads")}, "..."));
3953         }
3954
3955         if (@forklist) {
3956                 git_print_header_div('forks');
3957                 git_project_list_body(\@forklist, undef, 0, 15,
3958                                       $#forklist <= 15 ? undef :
3959                                       $cgi->a({-href => href(action=>"forks")}, "..."),
3960                                       'noheader');
3961         }
3962
3963         git_footer_html();
3964 }
3965
3966 sub git_tag {
3967         my $head = git_get_head_hash($project);
3968         git_header_html();
3969         git_print_page_nav('','', $head,undef,$head);
3970         my %tag = parse_tag($hash);
3971
3972         if (! %tag) {
3973                 die_error(undef, "Unknown tag object");
3974         }
3975
3976         git_print_header_div('commit', esc_html($tag{'name'}), $hash);
3977         print "<div class=\"title_text\">\n" .
3978               "<table class=\"object_header\">\n" .
3979               "<tr>\n" .
3980               "<td>object</td>\n" .
3981               "<td>" . $cgi->a({-class => "list", -href => href(action=>$tag{'type'}, hash=>$tag{'object'})},
3982                                $tag{'object'}) . "</td>\n" .
3983               "<td class=\"link\">" . $cgi->a({-href => href(action=>$tag{'type'}, hash=>$tag{'object'})},
3984                                               $tag{'type'}) . "</td>\n" .
3985               "</tr>\n";
3986         if (defined($tag{'author'})) {
3987                 my %ad = parse_date($tag{'epoch'}, $tag{'tz'});
3988                 print "<tr><td>author</td><td>" . esc_html($tag{'author'}) . "</td></tr>\n";
3989                 print "<tr><td></td><td>" . $ad{'rfc2822'} .
3990                         sprintf(" (%02d:%02d %s)", $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'}) .
3991                         "</td></tr>\n";
3992         }
3993         print "</table>\n\n" .
3994               "</div>\n";
3995         print "<div class=\"page_body\">";
3996         my $comment = $tag{'comment'};
3997         foreach my $line (@$comment) {
3998                 chomp $line;
3999                 print esc_html($line, -nbsp=>1) . "<br/>\n";
4000         }
4001         print "</div>\n";
4002         git_footer_html();
4003 }
4004
4005 sub git_blame2 {
4006         my $fd;
4007         my $ftype;
4008
4009         my ($have_blame) = gitweb_check_feature('blame');
4010         if (!$have_blame) {
4011                 die_error('403 Permission denied', "Permission denied");
4012         }
4013         die_error('404 Not Found', "File name not defined") if (!$file_name);
4014         $hash_base ||= git_get_head_hash($project);
4015         die_error(undef, "Couldn't find base commit") unless ($hash_base);
4016         my %co = parse_commit($hash_base)
4017                 or die_error(undef, "Reading commit failed");
4018         if (!defined $hash) {
4019                 $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
4020                         or die_error(undef, "Error looking up file");
4021         }
4022         $ftype = git_get_type($hash);
4023         if ($ftype !~ "blob") {
4024                 die_error('400 Bad Request', "Object is not a blob");
4025         }
4026         open ($fd, "-|", git_cmd(), "blame", '-p', '--',
4027               $file_name, $hash_base)
4028                 or die_error(undef, "Open git-blame failed");
4029         git_header_html();
4030         my $formats_nav =
4031                 $cgi->a({-href => href(action=>"blob", -replay=>1)},
4032                         "blob") .
4033                 " | " .
4034                 $cgi->a({-href => href(action=>"history", -replay=>1)},
4035                         "history") .
4036                 " | " .
4037                 $cgi->a({-href => href(action=>"blame", file_name=>$file_name)},
4038                         "HEAD");
4039         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
4040         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
4041         git_print_page_path($file_name, $ftype, $hash_base);
4042         my @rev_color = (qw(light2 dark2));
4043         my $num_colors = scalar(@rev_color);
4044         my $current_color = 0;
4045         my $last_rev;
4046         print <<HTML;
4047 <div class="page_body">
4048 <table class="blame">
4049 <tr><th>Commit</th><th>Line</th><th>Data</th></tr>
4050 HTML
4051         my %metainfo = ();
4052         while (1) {
4053                 $_ = <$fd>;
4054                 last unless defined $_;
4055                 my ($full_rev, $orig_lineno, $lineno, $group_size) =
4056                     /^([0-9a-f]{40}) (\d+) (\d+)(?: (\d+))?$/;
4057                 if (!exists $metainfo{$full_rev}) {
4058                         $metainfo{$full_rev} = {};
4059                 }
4060                 my $meta = $metainfo{$full_rev};
4061                 while (<$fd>) {
4062                         last if (s/^\t//);
4063                         if (/^(\S+) (.*)$/) {
4064                                 $meta->{$1} = $2;
4065                         }
4066                 }
4067                 my $data = $_;
4068                 chomp $data;
4069                 my $rev = substr($full_rev, 0, 8);
4070                 my $author = $meta->{'author'};
4071                 my %date = parse_date($meta->{'author-time'},
4072                                       $meta->{'author-tz'});
4073                 my $date = $date{'iso-tz'};
4074                 if ($group_size) {
4075                         $current_color = ++$current_color % $num_colors;
4076                 }
4077                 print "<tr class=\"$rev_color[$current_color]\">\n";
4078                 if ($group_size) {
4079                         print "<td class=\"sha1\"";
4080                         print " title=\"". esc_html($author) . ", $date\"";
4081                         print " rowspan=\"$group_size\"" if ($group_size > 1);
4082                         print ">";
4083                         print $cgi->a({-href => href(action=>"commit",
4084                                                      hash=>$full_rev,
4085                                                      file_name=>$file_name)},
4086                                       esc_html($rev));
4087                         print "</td>\n";
4088                 }
4089                 open (my $dd, "-|", git_cmd(), "rev-parse", "$full_rev^")
4090                         or die_error(undef, "Open git-rev-parse failed");
4091                 my $parent_commit = <$dd>;
4092                 close $dd;
4093                 chomp($parent_commit);
4094                 my $blamed = href(action => 'blame',
4095                                   file_name => $meta->{'filename'},
4096                                   hash_base => $parent_commit);
4097                 print "<td class=\"linenr\">";
4098                 print $cgi->a({ -href => "$blamed#l$orig_lineno",
4099                                 -id => "l$lineno",
4100                                 -class => "linenr" },
4101                               esc_html($lineno));
4102                 print "</td>";
4103                 print "<td class=\"pre\">" . esc_html($data) . "</td>\n";
4104                 print "</tr>\n";
4105         }
4106         print "</table>\n";
4107         print "</div>";
4108         close $fd
4109                 or print "Reading blob failed\n";
4110         git_footer_html();
4111 }
4112
4113 sub git_blame {
4114         my $fd;
4115
4116         my ($have_blame) = gitweb_check_feature('blame');
4117         if (!$have_blame) {
4118                 die_error('403 Permission denied', "Permission denied");
4119         }
4120         die_error('404 Not Found', "File name not defined") if (!$file_name);
4121         $hash_base ||= git_get_head_hash($project);
4122         die_error(undef, "Couldn't find base commit") unless ($hash_base);
4123         my %co = parse_commit($hash_base)
4124                 or die_error(undef, "Reading commit failed");
4125         if (!defined $hash) {
4126                 $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
4127                         or die_error(undef, "Error lookup file");
4128         }
4129         open ($fd, "-|", git_cmd(), "annotate", '-l', '-t', '-r', $file_name, $hash_base)
4130                 or die_error(undef, "Open git-annotate failed");
4131         git_header_html();
4132         my $formats_nav =
4133                 $cgi->a({-href => href(action=>"blob", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
4134                         "blob") .
4135                 " | " .
4136                 $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
4137                         "history") .
4138                 " | " .
4139                 $cgi->a({-href => href(action=>"blame", file_name=>$file_name)},
4140                         "HEAD");
4141         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
4142         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
4143         git_print_page_path($file_name, 'blob', $hash_base);
4144         print "<div class=\"page_body\">\n";
4145         print <<HTML;
4146 <table class="blame">
4147   <tr>
4148     <th>Commit</th>
4149     <th>Age</th>
4150     <th>Author</th>
4151     <th>Line</th>
4152     <th>Data</th>
4153   </tr>
4154 HTML
4155         my @line_class = (qw(light dark));
4156         my $line_class_len = scalar (@line_class);
4157         my $line_class_num = $#line_class;
4158         while (my $line = <$fd>) {
4159                 my $long_rev;
4160                 my $short_rev;
4161                 my $author;
4162                 my $time;
4163                 my $lineno;
4164                 my $data;
4165                 my $age;
4166                 my $age_str;
4167                 my $age_class;
4168
4169                 chomp $line;
4170                 $line_class_num = ($line_class_num + 1) % $line_class_len;
4171
4172                 if ($line =~ m/^([0-9a-fA-F]{40})\t\(\s*([^\t]+)\t(\d+) [+-]\d\d\d\d\t(\d+)\)(.*)$/) {
4173                         $long_rev = $1;
4174                         $author   = $2;
4175                         $time     = $3;
4176                         $lineno   = $4;
4177                         $data     = $5;
4178                 } else {
4179                         print qq(  <tr><td colspan="5" class="error">Unable to parse: $line</td></tr>\n);
4180                         next;
4181                 }
4182                 $short_rev  = substr ($long_rev, 0, 8);
4183                 $age        = time () - $time;
4184                 $age_str    = age_string ($age);
4185                 $age_str    =~ s/ /&nbsp;/g;
4186                 $age_class  = age_class($age);
4187                 $author     = esc_html ($author);
4188                 $author     =~ s/ /&nbsp;/g;
4189
4190                 $data = untabify($data);
4191                 $data = esc_html ($data);
4192
4193                 print <<HTML;
4194   <tr class="$line_class[$line_class_num]">
4195     <td class="sha1"><a href="${\href (action=>"commit", hash=>$long_rev)}" class="text">$short_rev..</a></td>
4196     <td class="$age_class">$age_str</td>
4197     <td>$author</td>
4198     <td class="linenr"><a id="$lineno" href="#$lineno" class="linenr">$lineno</a></td>
4199     <td class="pre">$data</td>
4200   </tr>
4201 HTML
4202         } # while (my $line = <$fd>)
4203         print "</table>\n\n";
4204         close $fd
4205                 or print "Reading blob failed.\n";
4206         print "</div>";
4207         git_footer_html();
4208 }
4209
4210 sub git_tags {
4211         my $head = git_get_head_hash($project);
4212         git_header_html();
4213         git_print_page_nav('','', $head,undef,$head);
4214         git_print_header_div('summary', $project);
4215
4216         my @tagslist = git_get_tags_list();
4217         if (@tagslist) {
4218                 git_tags_body(\@tagslist);
4219         }
4220         git_footer_html();
4221 }
4222
4223 sub git_heads {
4224         my $head = git_get_head_hash($project);
4225         git_header_html();
4226         git_print_page_nav('','', $head,undef,$head);
4227         git_print_header_div('summary', $project);
4228
4229         my @headslist = git_get_heads_list();
4230         if (@headslist) {
4231                 git_heads_body(\@headslist, $head);
4232         }
4233         git_footer_html();
4234 }
4235
4236 sub git_blob_plain {
4237         my $expires;
4238
4239         if (!defined $hash) {
4240                 if (defined $file_name) {
4241                         my $base = $hash_base || git_get_head_hash($project);
4242                         $hash = git_get_hash_by_path($base, $file_name, "blob")
4243                                 or die_error(undef, "Error lookup file");
4244                 } else {
4245                         die_error(undef, "No file name defined");
4246                 }
4247         } elsif ($hash =~ m/^[0-9a-fA-F]{40}$/) {
4248                 # blobs defined by non-textual hash id's can be cached
4249                 $expires = "+1d";
4250         }
4251
4252         my $type = shift;
4253         open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
4254                 or die_error(undef, "Couldn't cat $file_name, $hash");
4255
4256         $type ||= blob_mimetype($fd, $file_name);
4257
4258         # save as filename, even when no $file_name is given
4259         my $save_as = "$hash";
4260         if (defined $file_name) {
4261                 $save_as = $file_name;
4262         } elsif ($type =~ m/^text\//) {
4263                 $save_as .= '.txt';
4264         }
4265
4266         print $cgi->header(
4267                 -type => "$type",
4268                 -expires=>$expires,
4269                 -content_disposition => 'inline; filename="' . "$save_as" . '"');
4270         undef $/;
4271         binmode STDOUT, ':raw';
4272         print <$fd>;
4273         binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
4274         $/ = "\n";
4275         close $fd;
4276 }
4277
4278 sub git_blob {
4279         my $expires;
4280
4281         if (!defined $hash) {
4282                 if (defined $file_name) {
4283                         my $base = $hash_base || git_get_head_hash($project);
4284                         $hash = git_get_hash_by_path($base, $file_name, "blob")
4285                                 or die_error(undef, "Error lookup file");
4286                 } else {
4287                         die_error(undef, "No file name defined");
4288                 }
4289         } elsif ($hash =~ m/^[0-9a-fA-F]{40}$/) {
4290                 # blobs defined by non-textual hash id's can be cached
4291                 $expires = "+1d";
4292         }
4293
4294         my ($have_blame) = gitweb_check_feature('blame');
4295         open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
4296                 or die_error(undef, "Couldn't cat $file_name, $hash");
4297         my $mimetype = blob_mimetype($fd, $file_name);
4298         if ($mimetype !~ m!^(?:text/|image/(?:gif|png|jpeg)$)! && -B $fd) {
4299                 close $fd;
4300                 return git_blob_plain($mimetype);
4301         }
4302         # we can have blame only for text/* mimetype
4303         $have_blame &&= ($mimetype =~ m!^text/!);
4304
4305         git_header_html(undef, $expires);
4306         my $formats_nav = '';
4307         if (defined $hash_base && (my %co = parse_commit($hash_base))) {
4308                 if (defined $file_name) {
4309                         if ($have_blame) {
4310                                 $formats_nav .=
4311                                         $cgi->a({-href => href(action=>"blame", -replay=>1)},
4312                                                 "blame") .
4313                                         " | ";
4314                         }
4315                         $formats_nav .=
4316                                 $cgi->a({-href => href(action=>"history", -replay=>1)},
4317                                         "history") .
4318                                 " | " .
4319                                 $cgi->a({-href => href(action=>"blob_plain", -replay=>1)},
4320                                         "raw") .
4321                                 " | " .
4322                                 $cgi->a({-href => href(action=>"blob",
4323                                                        hash_base=>"HEAD", file_name=>$file_name)},
4324                                         "HEAD");
4325                 } else {
4326                         $formats_nav .=
4327                                 $cgi->a({-href => href(action=>"blob_plain", -replay=>1)},
4328                                         "raw");
4329                 }
4330                 git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
4331                 git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
4332         } else {
4333                 print "<div class=\"page_nav\">\n" .
4334                       "<br/><br/></div>\n" .
4335                       "<div class=\"title\">$hash</div>\n";
4336         }
4337         git_print_page_path($file_name, "blob", $hash_base);
4338         print "<div class=\"page_body\">\n";
4339         if ($mimetype =~ m!^image/!) {
4340                 print qq!<img type="$mimetype"!;
4341                 if ($file_name) {
4342                         print qq! alt="$file_name" title="$file_name"!;
4343                 }
4344                 print qq! src="! .
4345                       href(action=>"blob_plain", hash=>$hash,
4346                            hash_base=>$hash_base, file_name=>$file_name) .
4347                       qq!" />\n!;
4348         } else {
4349                 my $nr;
4350                 while (my $line = <$fd>) {
4351                         chomp $line;
4352                         $nr++;
4353                         $line = untabify($line);
4354                         printf "<div class=\"pre\"><a id=\"l%i\" href=\"#l%i\" class=\"linenr\">%4i</a> %s</div>\n",
4355                                $nr, $nr, $nr, esc_html($line, -nbsp=>1);
4356                 }
4357         }
4358         close $fd
4359                 or print "Reading blob failed.\n";
4360         print "</div>";
4361         git_footer_html();
4362 }
4363
4364 sub git_tree {
4365         if (!defined $hash_base) {
4366                 $hash_base = "HEAD";
4367         }
4368         if (!defined $hash) {
4369                 if (defined $file_name) {
4370                         $hash = git_get_hash_by_path($hash_base, $file_name, "tree");
4371                 } else {
4372                         $hash = $hash_base;
4373                 }
4374         }
4375         $/ = "\0";
4376         open my $fd, "-|", git_cmd(), "ls-tree", '-z', $hash
4377                 or die_error(undef, "Open git-ls-tree failed");
4378         my @entries = map { chomp; $_ } <$fd>;
4379         close $fd or die_error(undef, "Reading tree failed");
4380         $/ = "\n";
4381
4382         my $refs = git_get_references();
4383         my $ref = format_ref_marker($refs, $hash_base);
4384         git_header_html();
4385         my $basedir = '';
4386         my ($have_blame) = gitweb_check_feature('blame');
4387         if (defined $hash_base && (my %co = parse_commit($hash_base))) {
4388                 my @views_nav = ();
4389                 if (defined $file_name) {
4390                         push @views_nav,
4391                                 $cgi->a({-href => href(action=>"history", -replay=>1)},
4392                                         "history"),
4393                                 $cgi->a({-href => href(action=>"tree",
4394                                                        hash_base=>"HEAD", file_name=>$file_name)},
4395                                         "HEAD"),
4396                 }
4397                 my $snapshot_links = format_snapshot_links($hash);
4398                 if (defined $snapshot_links) {
4399                         # FIXME: Should be available when we have no hash base as well.
4400                         push @views_nav, $snapshot_links;
4401                 }
4402                 git_print_page_nav('tree','', $hash_base, undef, undef, join(' | ', @views_nav));
4403                 git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash_base);
4404         } else {
4405                 undef $hash_base;
4406                 print "<div class=\"page_nav\">\n";
4407                 print "<br/><br/></div>\n";
4408                 print "<div class=\"title\">$hash</div>\n";
4409         }
4410         if (defined $file_name) {
4411                 $basedir = $file_name;
4412                 if ($basedir ne '' && substr($basedir, -1) ne '/') {
4413                         $basedir .= '/';
4414                 }
4415         }
4416         git_print_page_path($file_name, 'tree', $hash_base);
4417         print "<div class=\"page_body\">\n";
4418         print "<table class=\"tree\">\n";
4419         my $alternate = 1;
4420         # '..' (top directory) link if possible
4421         if (defined $hash_base &&
4422             defined $file_name && $file_name =~ m![^/]+$!) {
4423                 if ($alternate) {
4424                         print "<tr class=\"dark\">\n";
4425                 } else {
4426                         print "<tr class=\"light\">\n";
4427                 }
4428                 $alternate ^= 1;
4429
4430                 my $up = $file_name;
4431                 $up =~ s!/?[^/]+$!!;
4432                 undef $up unless $up;
4433                 # based on git_print_tree_entry
4434                 print '<td class="mode">' . mode_str('040000') . "</td>\n";
4435                 print '<td class="list">';
4436                 print $cgi->a({-href => href(action=>"tree", hash_base=>$hash_base,
4437                                              file_name=>$up)},
4438                               "..");
4439                 print "</td>\n";
4440                 print "<td class=\"link\"></td>\n";
4441
4442                 print "</tr>\n";
4443         }
4444         foreach my $line (@entries) {
4445                 my %t = parse_ls_tree_line($line, -z => 1);
4446
4447                 if ($alternate) {
4448                         print "<tr class=\"dark\">\n";
4449                 } else {
4450                         print "<tr class=\"light\">\n";
4451                 }
4452                 $alternate ^= 1;
4453
4454                 git_print_tree_entry(\%t, $basedir, $hash_base, $have_blame);
4455
4456                 print "</tr>\n";
4457         }
4458         print "</table>\n" .
4459               "</div>";
4460         git_footer_html();
4461 }
4462
4463 sub git_snapshot {
4464         my @supported_fmts = gitweb_check_feature('snapshot');
4465         @supported_fmts = filter_snapshot_fmts(@supported_fmts);
4466
4467         my $format = $cgi->param('sf');
4468         if (!@supported_fmts) {
4469                 die_error('403 Permission denied', "Permission denied");
4470         }
4471         # default to first supported snapshot format
4472         $format ||= $supported_fmts[0];
4473         if ($format !~ m/^[a-z0-9]+$/) {
4474                 die_error(undef, "Invalid snapshot format parameter");
4475         } elsif (!exists($known_snapshot_formats{$format})) {
4476                 die_error(undef, "Unknown snapshot format");
4477         } elsif (!grep($_ eq $format, @supported_fmts)) {
4478                 die_error(undef, "Unsupported snapshot format");
4479         }
4480
4481         if (!defined $hash) {
4482                 $hash = git_get_head_hash($project);
4483         }
4484
4485         my $git_command = git_cmd_str();
4486         my $name = $project;
4487         $name =~ s,([^/])/*\.git$,$1,;
4488         $name = basename($name);
4489         my $filename = to_utf8($name);
4490         $name =~ s/\047/\047\\\047\047/g;
4491         my $cmd;
4492         $filename .= "-$hash$known_snapshot_formats{$format}{'suffix'}";
4493         $cmd = "$git_command archive " .
4494                 "--format=$known_snapshot_formats{$format}{'format'} " .
4495                 "--prefix=\'$name\'/ $hash";
4496         if (exists $known_snapshot_formats{$format}{'compressor'}) {
4497                 $cmd .= ' | ' . join ' ', @{$known_snapshot_formats{$format}{'compressor'}};
4498         }
4499
4500         print $cgi->header(
4501                 -type => $known_snapshot_formats{$format}{'type'},
4502                 -content_disposition => 'inline; filename="' . "$filename" . '"',
4503                 -status => '200 OK');
4504
4505         open my $fd, "-|", $cmd
4506                 or die_error(undef, "Execute git-archive failed");
4507         binmode STDOUT, ':raw';
4508         print <$fd>;
4509         binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
4510         close $fd;
4511 }
4512
4513 sub git_log {
4514         my $head = git_get_head_hash($project);
4515         if (!defined $hash) {
4516                 $hash = $head;
4517         }
4518         if (!defined $page) {
4519                 $page = 0;
4520         }
4521         my $refs = git_get_references();
4522
4523         my @commitlist = parse_commits($hash, 101, (100 * $page));
4524
4525         my $paging_nav = format_paging_nav('log', $hash, $head, $page, (100 * ($page+1)));
4526
4527         git_header_html();
4528         git_print_page_nav('log','', $hash,undef,undef, $paging_nav);
4529
4530         if (!@commitlist) {
4531                 my %co = parse_commit($hash);
4532
4533                 git_print_header_div('summary', $project);
4534                 print "<div class=\"page_body\"> Last change $co{'age_string'}.<br/><br/></div>\n";
4535         }
4536         my $to = ($#commitlist >= 99) ? (99) : ($#commitlist);
4537         for (my $i = 0; $i <= $to; $i++) {
4538                 my %co = %{$commitlist[$i]};
4539                 next if !%co;
4540                 my $commit = $co{'id'};
4541                 my $ref = format_ref_marker($refs, $commit);
4542                 my %ad = parse_date($co{'author_epoch'});
4543                 git_print_header_div('commit',
4544                                "<span class=\"age\">$co{'age_string'}</span>" .
4545                                esc_html($co{'title'}) . $ref,
4546                                $commit);
4547                 print "<div class=\"title_text\">\n" .
4548                       "<div class=\"log_link\">\n" .
4549                       $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") .
4550                       " | " .
4551                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") .
4552                       " | " .
4553                       $cgi->a({-href => href(action=>"tree", hash=>$commit, hash_base=>$commit)}, "tree") .
4554                       "<br/>\n" .
4555                       "</div>\n" .
4556                       "<i>" . esc_html($co{'author_name'}) .  " [$ad{'rfc2822'}]</i><br/>\n" .
4557                       "</div>\n";
4558
4559                 print "<div class=\"log_body\">\n";
4560                 git_print_log($co{'comment'}, -final_empty_line=> 1);
4561                 print "</div>\n";
4562         }
4563         if ($#commitlist >= 100) {
4564                 print "<div class=\"page_nav\">\n";
4565                 print $cgi->a({-href => href(-replay=>1, page=>$page+1),
4566                                -accesskey => "n", -title => "Alt-n"}, "next");
4567                 print "</div>\n";
4568         }
4569         git_footer_html();
4570 }
4571
4572 sub git_commit {
4573         $hash ||= $hash_base || "HEAD";
4574         my %co = parse_commit($hash);
4575         if (!%co) {
4576                 die_error(undef, "Unknown commit object");
4577         }
4578         my %ad = parse_date($co{'author_epoch'}, $co{'author_tz'});
4579         my %cd = parse_date($co{'committer_epoch'}, $co{'committer_tz'});
4580
4581         my $parent  = $co{'parent'};
4582         my $parents = $co{'parents'}; # listref
4583
4584         # we need to prepare $formats_nav before any parameter munging
4585         my $formats_nav;
4586         if (!defined $parent) {
4587                 # --root commitdiff
4588                 $formats_nav .= '(initial)';
4589         } elsif (@$parents == 1) {
4590                 # single parent commit
4591                 $formats_nav .=
4592                         '(parent: ' .
4593                         $cgi->a({-href => href(action=>"commit",
4594                                                hash=>$parent)},
4595                                 esc_html(substr($parent, 0, 7))) .
4596                         ')';
4597         } else {
4598                 # merge commit
4599                 $formats_nav .=
4600                         '(merge: ' .
4601                         join(' ', map {
4602                                 $cgi->a({-href => href(action=>"commit",
4603                                                        hash=>$_)},
4604                                         esc_html(substr($_, 0, 7)));
4605                         } @$parents ) .
4606                         ')';
4607         }
4608
4609         if (!defined $parent) {
4610                 $parent = "--root";
4611         }
4612         my @difftree;
4613         open my $fd, "-|", git_cmd(), "diff-tree", '-r', "--no-commit-id",
4614                 @diff_opts,
4615                 (@$parents <= 1 ? $parent : '-c'),
4616                 $hash, "--"
4617                 or die_error(undef, "Open git-diff-tree failed");
4618         @difftree = map { chomp; $_ } <$fd>;
4619         close $fd or die_error(undef, "Reading git-diff-tree failed");
4620
4621         # non-textual hash id's can be cached
4622         my $expires;
4623         if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
4624                 $expires = "+1d";
4625         }
4626         my $refs = git_get_references();
4627         my $ref = format_ref_marker($refs, $co{'id'});
4628
4629         git_header_html(undef, $expires);
4630         git_print_page_nav('commit', '',
4631                            $hash, $co{'tree'}, $hash,
4632                            $formats_nav);
4633
4634         if (defined $co{'parent'}) {
4635                 git_print_header_div('commitdiff', esc_html($co{'title'}) . $ref, $hash);
4636         } else {
4637                 git_print_header_div('tree', esc_html($co{'title'}) . $ref, $co{'tree'}, $hash);
4638         }
4639         print "<div class=\"title_text\">\n" .
4640               "<table class=\"object_header\">\n";
4641         print "<tr><td>author</td><td>" . esc_html($co{'author'}) . "</td></tr>\n".
4642               "<tr>" .
4643               "<td></td><td> $ad{'rfc2822'}";
4644         if ($ad{'hour_local'} < 6) {
4645                 printf(" (<span class=\"atnight\">%02d:%02d</span> %s)",
4646                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
4647         } else {
4648                 printf(" (%02d:%02d %s)",
4649                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
4650         }
4651         print "</td>" .
4652               "</tr>\n";
4653         print "<tr><td>committer</td><td>" . esc_html($co{'committer'}) . "</td></tr>\n";
4654         print "<tr><td></td><td> $cd{'rfc2822'}" .
4655               sprintf(" (%02d:%02d %s)", $cd{'hour_local'}, $cd{'minute_local'}, $cd{'tz_local'}) .
4656               "</td></tr>\n";
4657         print "<tr><td>commit</td><td class=\"sha1\">$co{'id'}</td></tr>\n";
4658         print "<tr>" .
4659               "<td>tree</td>" .
4660               "<td class=\"sha1\">" .
4661               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash),
4662                        class => "list"}, $co{'tree'}) .
4663               "</td>" .
4664               "<td class=\"link\">" .
4665               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash)},
4666                       "tree");
4667         my $snapshot_links = format_snapshot_links($hash);
4668         if (defined $snapshot_links) {
4669                 print " | " . $snapshot_links;
4670         }
4671         print "</td>" .
4672               "</tr>\n";
4673
4674         foreach my $par (@$parents) {
4675                 print "<tr>" .
4676                       "<td>parent</td>" .
4677                       "<td class=\"sha1\">" .
4678                       $cgi->a({-href => href(action=>"commit", hash=>$par),
4679                                class => "list"}, $par) .
4680                       "</td>" .
4681                       "<td class=\"link\">" .
4682                       $cgi->a({-href => href(action=>"commit", hash=>$par)}, "commit") .
4683                       " | " .
4684                       $cgi->a({-href => href(action=>"commitdiff", hash=>$hash, hash_parent=>$par)}, "diff") .
4685                       "</td>" .
4686                       "</tr>\n";
4687         }
4688         print "</table>".
4689               "</div>\n";
4690
4691         print "<div class=\"page_body\">\n";
4692         git_print_log($co{'comment'});
4693         print "</div>\n";
4694
4695         git_difftree_body(\@difftree, $hash, @$parents);
4696
4697         git_footer_html();
4698 }
4699
4700 sub git_object {
4701         # object is defined by:
4702         # - hash or hash_base alone
4703         # - hash_base and file_name
4704         my $type;
4705
4706         # - hash or hash_base alone
4707         if ($hash || ($hash_base && !defined $file_name)) {
4708                 my $object_id = $hash || $hash_base;
4709
4710                 my $git_command = git_cmd_str();
4711                 open my $fd, "-|", "$git_command cat-file -t $object_id 2>/dev/null"
4712                         or die_error('404 Not Found', "Object does not exist");
4713                 $type = <$fd>;
4714                 chomp $type;
4715                 close $fd
4716                         or die_error('404 Not Found', "Object does not exist");
4717
4718         # - hash_base and file_name
4719         } elsif ($hash_base && defined $file_name) {
4720                 $file_name =~ s,/+$,,;
4721
4722                 system(git_cmd(), "cat-file", '-e', $hash_base) == 0
4723                         or die_error('404 Not Found', "Base object does not exist");
4724
4725                 # here errors should not hapen
4726                 open my $fd, "-|", git_cmd(), "ls-tree", $hash_base, "--", $file_name
4727                         or die_error(undef, "Open git-ls-tree failed");
4728                 my $line = <$fd>;
4729                 close $fd;
4730
4731                 #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
4732                 unless ($line && $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t/) {
4733                         die_error('404 Not Found', "File or directory for given base does not exist");
4734                 }
4735                 $type = $2;
4736                 $hash = $3;
4737         } else {
4738                 die_error('404 Not Found', "Not enough information to find object");
4739         }
4740
4741         print $cgi->redirect(-uri => href(action=>$type, -full=>1,
4742                                           hash=>$hash, hash_base=>$hash_base,
4743                                           file_name=>$file_name),
4744                              -status => '302 Found');
4745 }
4746
4747 sub git_blobdiff {
4748         my $format = shift || 'html';
4749
4750         my $fd;
4751         my @difftree;
4752         my %diffinfo;
4753         my $expires;
4754
4755         # preparing $fd and %diffinfo for git_patchset_body
4756         # new style URI
4757         if (defined $hash_base && defined $hash_parent_base) {
4758                 if (defined $file_name) {
4759                         # read raw output
4760                         open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4761                                 $hash_parent_base, $hash_base,
4762                                 "--", (defined $file_parent ? $file_parent : ()), $file_name
4763                                 or die_error(undef, "Open git-diff-tree failed");
4764                         @difftree = map { chomp; $_ } <$fd>;
4765                         close $fd
4766                                 or die_error(undef, "Reading git-diff-tree failed");
4767                         @difftree
4768                                 or die_error('404 Not Found', "Blob diff not found");
4769
4770                 } elsif (defined $hash &&
4771                          $hash =~ /[0-9a-fA-F]{40}/) {
4772                         # try to find filename from $hash
4773
4774                         # read filtered raw output
4775                         open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4776                                 $hash_parent_base, $hash_base, "--"
4777                                 or die_error(undef, "Open git-diff-tree failed");
4778                         @difftree =
4779                                 # ':100644 100644 03b21826... 3b93d5e7... M     ls-files.c'
4780                                 # $hash == to_id
4781                                 grep { /^:[0-7]{6} [0-7]{6} [0-9a-fA-F]{40} $hash/ }
4782                                 map { chomp; $_ } <$fd>;
4783                         close $fd
4784                                 or die_error(undef, "Reading git-diff-tree failed");
4785                         @difftree
4786                                 or die_error('404 Not Found', "Blob diff not found");
4787
4788                 } else {
4789                         die_error('404 Not Found', "Missing one of the blob diff parameters");
4790                 }
4791
4792                 if (@difftree > 1) {
4793                         die_error('404 Not Found', "Ambiguous blob diff specification");
4794                 }
4795
4796                 %diffinfo = parse_difftree_raw_line($difftree[0]);
4797                 $file_parent ||= $diffinfo{'from_file'} || $file_name;
4798                 $file_name   ||= $diffinfo{'to_file'};
4799
4800                 $hash_parent ||= $diffinfo{'from_id'};
4801                 $hash        ||= $diffinfo{'to_id'};
4802
4803                 # non-textual hash id's can be cached
4804                 if ($hash_base =~ m/^[0-9a-fA-F]{40}$/ &&
4805                     $hash_parent_base =~ m/^[0-9a-fA-F]{40}$/) {
4806                         $expires = '+1d';
4807                 }
4808
4809                 # open patch output
4810                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4811                         '-p', ($format eq 'html' ? "--full-index" : ()),
4812                         $hash_parent_base, $hash_base,
4813                         "--", (defined $file_parent ? $file_parent : ()), $file_name
4814                         or die_error(undef, "Open git-diff-tree failed");
4815         }
4816
4817         # old/legacy style URI
4818         if (!%diffinfo && # if new style URI failed
4819             defined $hash && defined $hash_parent) {
4820                 # fake git-diff-tree raw output
4821                 $diffinfo{'from_mode'} = $diffinfo{'to_mode'} = "blob";
4822                 $diffinfo{'from_id'} = $hash_parent;
4823                 $diffinfo{'to_id'}   = $hash;
4824                 if (defined $file_name) {
4825                         if (defined $file_parent) {
4826                                 $diffinfo{'status'} = '2';
4827                                 $diffinfo{'from_file'} = $file_parent;
4828                                 $diffinfo{'to_file'}   = $file_name;
4829                         } else { # assume not renamed
4830                                 $diffinfo{'status'} = '1';
4831                                 $diffinfo{'from_file'} = $file_name;
4832                                 $diffinfo{'to_file'}   = $file_name;
4833                         }
4834                 } else { # no filename given
4835                         $diffinfo{'status'} = '2';
4836                         $diffinfo{'from_file'} = $hash_parent;
4837                         $diffinfo{'to_file'}   = $hash;
4838                 }
4839
4840                 # non-textual hash id's can be cached
4841                 if ($hash =~ m/^[0-9a-fA-F]{40}$/ &&
4842                     $hash_parent =~ m/^[0-9a-fA-F]{40}$/) {
4843                         $expires = '+1d';
4844                 }
4845
4846                 # open patch output
4847                 open $fd, "-|", git_cmd(), "diff", @diff_opts,
4848                         '-p', ($format eq 'html' ? "--full-index" : ()),
4849                         $hash_parent, $hash, "--"
4850                         or die_error(undef, "Open git-diff failed");
4851         } else  {
4852                 die_error('404 Not Found', "Missing one of the blob diff parameters")
4853                         unless %diffinfo;
4854         }
4855
4856         # header
4857         if ($format eq 'html') {
4858                 my $formats_nav =
4859                         $cgi->a({-href => href(action=>"blobdiff_plain", -replay=>1)},
4860                                 "raw");
4861                 git_header_html(undef, $expires);
4862                 if (defined $hash_base && (my %co = parse_commit($hash_base))) {
4863                         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
4864                         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
4865                 } else {
4866                         print "<div class=\"page_nav\"><br/>$formats_nav<br/></div>\n";
4867                         print "<div class=\"title\">$hash vs $hash_parent</div>\n";
4868                 }
4869                 if (defined $file_name) {
4870                         git_print_page_path($file_name, "blob", $hash_base);
4871                 } else {
4872                         print "<div class=\"page_path\"></div>\n";
4873                 }
4874
4875         } elsif ($format eq 'plain') {
4876                 print $cgi->header(
4877                         -type => 'text/plain',
4878                         -charset => 'utf-8',
4879                         -expires => $expires,
4880                         -content_disposition => 'inline; filename="' . "$file_name" . '.patch"');
4881
4882                 print "X-Git-Url: " . $cgi->self_url() . "\n\n";
4883
4884         } else {
4885                 die_error(undef, "Unknown blobdiff format");
4886         }
4887
4888         # patch
4889         if ($format eq 'html') {
4890                 print "<div class=\"page_body\">\n";
4891
4892                 git_patchset_body($fd, [ \%diffinfo ], $hash_base, $hash_parent_base);
4893                 close $fd;
4894
4895                 print "</div>\n"; # class="page_body"
4896                 git_footer_html();
4897
4898         } else {
4899                 while (my $line = <$fd>) {
4900                         $line =~ s!a/($hash|$hash_parent)!'a/'.esc_path($diffinfo{'from_file'})!eg;
4901                         $line =~ s!b/($hash|$hash_parent)!'b/'.esc_path($diffinfo{'to_file'})!eg;
4902
4903                         print $line;
4904
4905                         last if $line =~ m!^\+\+\+!;
4906                 }
4907                 local $/ = undef;
4908                 print <$fd>;
4909                 close $fd;
4910         }
4911 }
4912
4913 sub git_blobdiff_plain {
4914         git_blobdiff('plain');
4915 }
4916
4917 sub git_commitdiff {
4918         my $format = shift || 'html';
4919         $hash ||= $hash_base || "HEAD";
4920         my %co = parse_commit($hash);
4921         if (!%co) {
4922                 die_error(undef, "Unknown commit object");
4923         }
4924
4925         # choose format for commitdiff for merge
4926         if (! defined $hash_parent && @{$co{'parents'}} > 1) {
4927                 $hash_parent = '--cc';
4928         }
4929         # we need to prepare $formats_nav before almost any parameter munging
4930         my $formats_nav;
4931         if ($format eq 'html') {
4932                 $formats_nav =
4933                         $cgi->a({-href => href(action=>"commitdiff_plain", -replay=>1)},
4934                                 "raw");
4935
4936                 if (defined $hash_parent &&
4937                     $hash_parent ne '-c' && $hash_parent ne '--cc') {
4938                         # commitdiff with two commits given
4939                         my $hash_parent_short = $hash_parent;
4940                         if ($hash_parent =~ m/^[0-9a-fA-F]{40}$/) {
4941                                 $hash_parent_short = substr($hash_parent, 0, 7);
4942                         }
4943                         $formats_nav .=
4944                                 ' (from';
4945                         for (my $i = 0; $i < @{$co{'parents'}}; $i++) {
4946                                 if ($co{'parents'}[$i] eq $hash_parent) {
4947                                         $formats_nav .= ' parent ' . ($i+1);
4948                                         last;
4949                                 }
4950                         }
4951                         $formats_nav .= ': ' .
4952                                 $cgi->a({-href => href(action=>"commitdiff",
4953                                                        hash=>$hash_parent)},
4954                                         esc_html($hash_parent_short)) .
4955                                 ')';
4956                 } elsif (!$co{'parent'}) {
4957                         # --root commitdiff
4958                         $formats_nav .= ' (initial)';
4959                 } elsif (scalar @{$co{'parents'}} == 1) {
4960                         # single parent commit
4961                         $formats_nav .=
4962                                 ' (parent: ' .
4963                                 $cgi->a({-href => href(action=>"commitdiff",
4964                                                        hash=>$co{'parent'})},
4965                                         esc_html(substr($co{'parent'}, 0, 7))) .
4966                                 ')';
4967                 } else {
4968                         # merge commit
4969                         if ($hash_parent eq '--cc') {
4970                                 $formats_nav .= ' | ' .
4971                                         $cgi->a({-href => href(action=>"commitdiff",
4972                                                                hash=>$hash, hash_parent=>'-c')},
4973                                                 'combined');
4974                         } else { # $hash_parent eq '-c'
4975                                 $formats_nav .= ' | ' .
4976                                         $cgi->a({-href => href(action=>"commitdiff",
4977                                                                hash=>$hash, hash_parent=>'--cc')},
4978                                                 'compact');
4979                         }
4980                         $formats_nav .=
4981                                 ' (merge: ' .
4982                                 join(' ', map {
4983                                         $cgi->a({-href => href(action=>"commitdiff",
4984                                                                hash=>$_)},
4985                                                 esc_html(substr($_, 0, 7)));
4986                                 } @{$co{'parents'}} ) .
4987                                 ')';
4988                 }
4989         }
4990
4991         my $hash_parent_param = $hash_parent;
4992         if (!defined $hash_parent_param) {
4993                 # --cc for multiple parents, --root for parentless
4994                 $hash_parent_param =
4995                         @{$co{'parents'}} > 1 ? '--cc' : $co{'parent'} || '--root';
4996         }
4997
4998         # read commitdiff
4999         my $fd;
5000         my @difftree;
5001         if ($format eq 'html') {
5002                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
5003                         "--no-commit-id", "--patch-with-raw", "--full-index",
5004                         $hash_parent_param, $hash, "--"
5005                         or die_error(undef, "Open git-diff-tree failed");
5006
5007                 while (my $line = <$fd>) {
5008                         chomp $line;
5009                         # empty line ends raw part of diff-tree output
5010                         last unless $line;
5011                         push @difftree, scalar parse_difftree_raw_line($line);
5012                 }
5013
5014         } elsif ($format eq 'plain') {
5015                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
5016                         '-p', $hash_parent_param, $hash, "--"
5017                         or die_error(undef, "Open git-diff-tree failed");
5018
5019         } else {
5020                 die_error(undef, "Unknown commitdiff format");
5021         }
5022
5023         # non-textual hash id's can be cached
5024         my $expires;
5025         if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
5026                 $expires = "+1d";
5027         }
5028
5029         # write commit message
5030         if ($format eq 'html') {
5031                 my $refs = git_get_references();
5032                 my $ref = format_ref_marker($refs, $co{'id'});
5033
5034                 git_header_html(undef, $expires);
5035                 git_print_page_nav('commitdiff','', $hash,$co{'tree'},$hash, $formats_nav);
5036                 git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash);
5037                 git_print_authorship(\%co);
5038                 print "<div class=\"page_body\">\n";
5039                 if (@{$co{'comment'}} > 1) {
5040                         print "<div class=\"log\">\n";
5041                         git_print_log($co{'comment'}, -final_empty_line=> 1, -remove_title => 1);
5042                         print "</div>\n"; # class="log"
5043                 }
5044
5045         } elsif ($format eq 'plain') {
5046                 my $refs = git_get_references("tags");
5047                 my $tagname = git_get_rev_name_tags($hash);
5048                 my $filename = basename($project) . "-$hash.patch";
5049
5050                 print $cgi->header(
5051                         -type => 'text/plain',
5052                         -charset => 'utf-8',
5053                         -expires => $expires,
5054                         -content_disposition => 'inline; filename="' . "$filename" . '"');
5055                 my %ad = parse_date($co{'author_epoch'}, $co{'author_tz'});
5056                 print "From: " . to_utf8($co{'author'}) . "\n";
5057                 print "Date: $ad{'rfc2822'} ($ad{'tz_local'})\n";
5058                 print "Subject: " . to_utf8($co{'title'}) . "\n";
5059
5060                 print "X-Git-Tag: $tagname\n" if $tagname;
5061                 print "X-Git-Url: " . $cgi->self_url() . "\n\n";
5062
5063                 foreach my $line (@{$co{'comment'}}) {
5064                         print to_utf8($line) . "\n";
5065                 }
5066                 print "---\n\n";
5067         }
5068
5069         # write patch
5070         if ($format eq 'html') {
5071                 my $use_parents = !defined $hash_parent ||
5072                         $hash_parent eq '-c' || $hash_parent eq '--cc';
5073                 git_difftree_body(\@difftree, $hash,
5074                                   $use_parents ? @{$co{'parents'}} : $hash_parent);
5075                 print "<br/>\n";
5076
5077                 git_patchset_body($fd, \@difftree, $hash,
5078                                   $use_parents ? @{$co{'parents'}} : $hash_parent);
5079                 close $fd;
5080                 print "</div>\n"; # class="page_body"
5081                 git_footer_html();
5082
5083         } elsif ($format eq 'plain') {
5084                 local $/ = undef;
5085                 print <$fd>;
5086                 close $fd
5087                         or print "Reading git-diff-tree failed\n";
5088         }
5089 }
5090
5091 sub git_commitdiff_plain {
5092         git_commitdiff('plain');
5093 }
5094
5095 sub git_history {
5096         if (!defined $hash_base) {
5097                 $hash_base = git_get_head_hash($project);
5098         }
5099         if (!defined $page) {
5100                 $page = 0;
5101         }
5102         my $ftype;
5103         my %co = parse_commit($hash_base);
5104         if (!%co) {
5105                 die_error(undef, "Unknown commit object");
5106         }
5107
5108         my $refs = git_get_references();
5109         my $limit = sprintf("--max-count=%i", (100 * ($page+1)));
5110
5111         if (!defined $hash && defined $file_name) {
5112                 $hash = git_get_hash_by_path($hash_base, $file_name);
5113         }
5114         if (defined $hash) {
5115                 $ftype = git_get_type($hash);
5116         }
5117
5118         my @commitlist = parse_commits($hash_base, 101, (100 * $page), "--full-history", $file_name);
5119
5120         my $paging_nav = '';
5121         if ($page > 0) {
5122                 $paging_nav .=
5123                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
5124                                                file_name=>$file_name)},
5125                                 "first");
5126                 $paging_nav .= " &sdot; " .
5127                         $cgi->a({-href => href(-replay=>1, page=>$page-1),
5128                                  -accesskey => "p", -title => "Alt-p"}, "prev");
5129         } else {
5130                 $paging_nav .= "first";
5131                 $paging_nav .= " &sdot; prev";
5132         }
5133         my $next_link = '';
5134         if ($#commitlist >= 100) {
5135                 $next_link =
5136                         $cgi->a({-href => href(-replay=>1, page=>$page+1),
5137                                  -accesskey => "n", -title => "Alt-n"}, "next");
5138                 $paging_nav .= " &sdot; $next_link";
5139         } else {
5140                 $paging_nav .= " &sdot; next";
5141         }
5142
5143         git_header_html();
5144         git_print_page_nav('history','', $hash_base,$co{'tree'},$hash_base, $paging_nav);
5145         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
5146         git_print_page_path($file_name, $ftype, $hash_base);
5147
5148         git_history_body(\@commitlist, 0, 99,
5149                          $refs, $hash_base, $ftype, $next_link);
5150
5151         git_footer_html();
5152 }
5153
5154 sub git_search {
5155         my ($have_search) = gitweb_check_feature('search');
5156         if (!$have_search) {
5157                 die_error('403 Permission denied', "Permission denied");
5158         }
5159         if (!defined $searchtext) {
5160                 die_error(undef, "Text field empty");
5161         }
5162         if (!defined $hash) {
5163                 $hash = git_get_head_hash($project);
5164         }
5165         my %co = parse_commit($hash);
5166         if (!%co) {
5167                 die_error(undef, "Unknown commit object");
5168         }
5169         if (!defined $page) {
5170                 $page = 0;
5171         }
5172
5173         $searchtype ||= 'commit';
5174         if ($searchtype eq 'pickaxe') {
5175                 # pickaxe may take all resources of your box and run for several minutes
5176                 # with every query - so decide by yourself how public you make this feature
5177                 my ($have_pickaxe) = gitweb_check_feature('pickaxe');
5178                 if (!$have_pickaxe) {
5179                         die_error('403 Permission denied', "Permission denied");
5180                 }
5181         }
5182         if ($searchtype eq 'grep') {
5183                 my ($have_grep) = gitweb_check_feature('grep');
5184                 if (!$have_grep) {
5185                         die_error('403 Permission denied', "Permission denied");
5186                 }
5187         }
5188
5189         git_header_html();
5190
5191         if ($searchtype eq 'commit' or $searchtype eq 'author' or $searchtype eq 'committer') {
5192                 my $greptype;
5193                 if ($searchtype eq 'commit') {
5194                         $greptype = "--grep=";
5195                 } elsif ($searchtype eq 'author') {
5196                         $greptype = "--author=";
5197                 } elsif ($searchtype eq 'committer') {
5198                         $greptype = "--committer=";
5199                 }
5200                 $greptype .= $search_regexp;
5201                 my @commitlist = parse_commits($hash, 101, (100 * $page), $greptype);
5202
5203                 my $paging_nav = '';
5204                 if ($page > 0) {
5205                         $paging_nav .=
5206                                 $cgi->a({-href => href(action=>"search", hash=>$hash,
5207                                                        searchtext=>$searchtext, searchtype=>$searchtype)},
5208                                         "first");
5209                         $paging_nav .= " &sdot; " .
5210                                 $cgi->a({-href => href(-replay=>1, page=>$page-1),
5211                                          -accesskey => "p", -title => "Alt-p"}, "prev");
5212                 } else {
5213                         $paging_nav .= "first";
5214                         $paging_nav .= " &sdot; prev";
5215                 }
5216                 my $next_link = '';
5217                 if ($#commitlist >= 100) {
5218                         $next_link =
5219                                 $cgi->a({-href => href(-replay=>1, page=>$page+1),
5220                                          -accesskey => "n", -title => "Alt-n"}, "next");
5221                         $paging_nav .= " &sdot; $next_link";
5222                 } else {
5223                         $paging_nav .= " &sdot; next";
5224                 }
5225
5226                 if ($#commitlist >= 100) {
5227                 }
5228
5229                 git_print_page_nav('','', $hash,$co{'tree'},$hash, $paging_nav);
5230                 git_print_header_div('commit', esc_html($co{'title'}), $hash);
5231                 git_search_grep_body(\@commitlist, 0, 99, $next_link);
5232         }
5233
5234         if ($searchtype eq 'pickaxe') {
5235                 git_print_page_nav('','', $hash,$co{'tree'},$hash);
5236                 git_print_header_div('commit', esc_html($co{'title'}), $hash);
5237
5238                 print "<table class=\"pickaxe search\">\n";
5239                 my $alternate = 1;
5240                 $/ = "\n";
5241                 my $git_command = git_cmd_str();
5242                 my $searchqtext = $searchtext;
5243                 $searchqtext =~ s/'/'\\''/;
5244                 open my $fd, "-|", "$git_command rev-list $hash | " .
5245                         "$git_command diff-tree -r --stdin -S\'$searchqtext\'";
5246                 undef %co;
5247                 my @files;
5248                 while (my $line = <$fd>) {
5249                         if (%co && $line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)\t(.*)$/) {
5250                                 my %set;
5251                                 $set{'file'} = $6;
5252                                 $set{'from_id'} = $3;
5253                                 $set{'to_id'} = $4;
5254                                 $set{'id'} = $set{'to_id'};
5255                                 if ($set{'id'} =~ m/0{40}/) {
5256                                         $set{'id'} = $set{'from_id'};
5257                                 }
5258                                 if ($set{'id'} =~ m/0{40}/) {
5259                                         next;
5260                                 }
5261                                 push @files, \%set;
5262                         } elsif ($line =~ m/^([0-9a-fA-F]{40})$/){
5263                                 if (%co) {
5264                                         if ($alternate) {
5265                                                 print "<tr class=\"dark\">\n";
5266                                         } else {
5267                                                 print "<tr class=\"light\">\n";
5268                                         }
5269                                         $alternate ^= 1;
5270                                         my $author = chop_and_escape_str($co{'author_name'}, 15, 5);
5271                                         print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
5272                                               "<td><i>" . $author . "</i></td>\n" .
5273                                               "<td>" .
5274                                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}),
5275                                                       -class => "list subject"},
5276                                                       chop_and_escape_str($co{'title'}, 50) . "<br/>");
5277                                         while (my $setref = shift @files) {
5278                                                 my %set = %$setref;
5279                                                 print $cgi->a({-href => href(action=>"blob", hash_base=>$co{'id'},
5280                                                                              hash=>$set{'id'}, file_name=>$set{'file'}),
5281                                                               -class => "list"},
5282                                                               "<span class=\"match\">" . esc_path($set{'file'}) . "</span>") .
5283                                                       "<br/>\n";
5284                                         }
5285                                         print "</td>\n" .
5286                                               "<td class=\"link\">" .
5287                                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})}, "commit") .
5288                                               " | " .
5289                                               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$co{'id'})}, "tree");
5290                                         print "</td>\n" .
5291                                               "</tr>\n";
5292                                 }
5293                                 %co = parse_commit($1);
5294                         }
5295                 }
5296                 close $fd;
5297
5298                 print "</table>\n";
5299         }
5300
5301         if ($searchtype eq 'grep') {
5302                 git_print_page_nav('','', $hash,$co{'tree'},$hash);
5303                 git_print_header_div('commit', esc_html($co{'title'}), $hash);
5304
5305                 print "<table class=\"grep_search\">\n";
5306                 my $alternate = 1;
5307                 my $matches = 0;
5308                 $/ = "\n";
5309                 open my $fd, "-|", git_cmd(), 'grep', '-n', '-i', '-E', $searchtext, $co{'tree'};
5310                 my $lastfile = '';
5311                 while (my $line = <$fd>) {
5312                         chomp $line;
5313                         my ($file, $lno, $ltext, $binary);
5314                         last if ($matches++ > 1000);
5315                         if ($line =~ /^Binary file (.+) matches$/) {
5316                                 $file = $1;
5317                                 $binary = 1;
5318                         } else {
5319                                 (undef, $file, $lno, $ltext) = split(/:/, $line, 4);
5320                         }
5321                         if ($file ne $lastfile) {
5322                                 $lastfile and print "</td></tr>\n";
5323                                 if ($alternate++) {
5324                                         print "<tr class=\"dark\">\n";
5325                                 } else {
5326                                         print "<tr class=\"light\">\n";
5327                                 }
5328                                 print "<td class=\"list\">".
5329                                         $cgi->a({-href => href(action=>"blob", hash=>$co{'hash'},
5330                                                                file_name=>"$file"),
5331                                                 -class => "list"}, esc_path($file));
5332                                 print "</td><td>\n";
5333                                 $lastfile = $file;
5334                         }
5335                         if ($binary) {
5336                                 print "<div class=\"binary\">Binary file</div>\n";
5337                         } else {
5338                                 $ltext = untabify($ltext);
5339                                 if ($ltext =~ m/^(.*)($searchtext)(.*)$/i) {
5340                                         $ltext = esc_html($1, -nbsp=>1);
5341                                         $ltext .= '<span class="match">';
5342                                         $ltext .= esc_html($2, -nbsp=>1);
5343                                         $ltext .= '</span>';
5344                                         $ltext .= esc_html($3, -nbsp=>1);
5345                                 } else {
5346                                         $ltext = esc_html($ltext, -nbsp=>1);
5347                                 }
5348                                 print "<div class=\"pre\">" .
5349                                         $cgi->a({-href => href(action=>"blob", hash=>$co{'hash'},
5350                                                                file_name=>"$file").'#l'.$lno,
5351                                                 -class => "linenr"}, sprintf('%4i', $lno))
5352                                         . ' ' .  $ltext . "</div>\n";
5353                         }
5354                 }
5355                 if ($lastfile) {
5356                         print "</td></tr>\n";
5357                         if ($matches > 1000) {
5358                                 print "<div class=\"diff nodifferences\">Too many matches, listing trimmed</div>\n";
5359                         }
5360                 } else {
5361                         print "<div class=\"diff nodifferences\">No matches found</div>\n";
5362                 }
5363                 close $fd;
5364
5365                 print "</table>\n";
5366         }
5367         git_footer_html();
5368 }
5369
5370 sub git_search_help {
5371         git_header_html();
5372         git_print_page_nav('','', $hash,$hash,$hash);
5373         print <<EOT;
5374 <dl>
5375 <dt><b>commit</b></dt>
5376 <dd>The commit messages and authorship information will be scanned for the given string.</dd>
5377 EOT
5378         my ($have_grep) = gitweb_check_feature('grep');
5379         if ($have_grep) {
5380                 print <<EOT;
5381 <dt><b>grep</b></dt>
5382 <dd>All files in the currently selected tree (HEAD unless you are explicitly browsing
5383     a different one) are searched for the given
5384 <a href="http://en.wikipedia.org/wiki/Regular_expression">regular expression</a>
5385 (POSIX extended) and the matches are listed. On large
5386 trees, this search can take a while and put some strain on the server, so please use it with
5387 some consideration.</dd>
5388 EOT
5389         }
5390         print <<EOT;
5391 <dt><b>author</b></dt>
5392 <dd>Name and e-mail of the change author and date of birth of the patch will be scanned for the given string.</dd>
5393 <dt><b>committer</b></dt>
5394 <dd>Name and e-mail of the committer and date of commit will be scanned for the given string.</dd>
5395 EOT
5396         my ($have_pickaxe) = gitweb_check_feature('pickaxe');
5397         if ($have_pickaxe) {
5398                 print <<EOT;
5399 <dt><b>pickaxe</b></dt>
5400 <dd>All commits that caused the string to appear or disappear from any file (changes that
5401 added, removed or "modified" the string) will be listed. This search can take a while and
5402 takes a lot of strain on the server, so please use it wisely.</dd>
5403 EOT
5404         }
5405         print "</dl>\n";
5406         git_footer_html();
5407 }
5408
5409 sub git_shortlog {
5410         my $head = git_get_head_hash($project);
5411         if (!defined $hash) {
5412                 $hash = $head;
5413         }
5414         if (!defined $page) {
5415                 $page = 0;
5416         }
5417         my $refs = git_get_references();
5418
5419         my @commitlist = parse_commits($hash, 101, (100 * $page));
5420
5421         my $paging_nav = format_paging_nav('shortlog', $hash, $head, $page, (100 * ($page+1)));
5422         my $next_link = '';
5423         if ($#commitlist >= 100) {
5424                 $next_link =
5425                         $cgi->a({-href => href(-replay=>1, page=>$page+1),
5426                                  -accesskey => "n", -title => "Alt-n"}, "next");
5427         }
5428
5429         git_header_html();
5430         git_print_page_nav('shortlog','', $hash,$hash,$hash, $paging_nav);
5431         git_print_header_div('summary', $project);
5432
5433         git_shortlog_body(\@commitlist, 0, 99, $refs, $next_link);
5434
5435         git_footer_html();
5436 }
5437
5438 ## ......................................................................
5439 ## feeds (RSS, Atom; OPML)
5440
5441 sub git_feed {
5442         my $format = shift || 'atom';
5443         my ($have_blame) = gitweb_check_feature('blame');
5444
5445         # Atom: http://www.atomenabled.org/developers/syndication/
5446         # RSS:  http://www.notestips.com/80256B3A007F2692/1/NAMO5P9UPQ
5447         if ($format ne 'rss' && $format ne 'atom') {
5448                 die_error(undef, "Unknown web feed format");
5449         }
5450
5451         # log/feed of current (HEAD) branch, log of given branch, history of file/directory
5452         my $head = $hash || 'HEAD';
5453         my @commitlist = parse_commits($head, 150, 0, undef, $file_name);
5454
5455         my %latest_commit;
5456         my %latest_date;
5457         my $content_type = "application/$format+xml";
5458         if (defined $cgi->http('HTTP_ACCEPT') &&
5459                  $cgi->Accept('text/xml') > $cgi->Accept($content_type)) {
5460                 # browser (feed reader) prefers text/xml
5461                 $content_type = 'text/xml';
5462         }
5463         if (defined($commitlist[0])) {
5464                 %latest_commit = %{$commitlist[0]};
5465                 %latest_date   = parse_date($latest_commit{'author_epoch'});
5466                 print $cgi->header(
5467                         -type => $content_type,
5468                         -charset => 'utf-8',
5469                         -last_modified => $latest_date{'rfc2822'});
5470         } else {
5471                 print $cgi->header(
5472                         -type => $content_type,
5473                         -charset => 'utf-8');
5474         }
5475
5476         # Optimization: skip generating the body if client asks only
5477         # for Last-Modified date.
5478         return if ($cgi->request_method() eq 'HEAD');
5479
5480         # header variables
5481         my $title = "$site_name - $project/$action";
5482         my $feed_type = 'log';
5483         if (defined $hash) {
5484                 $title .= " - '$hash'";
5485                 $feed_type = 'branch log';
5486                 if (defined $file_name) {
5487                         $title .= " :: $file_name";
5488                         $feed_type = 'history';
5489                 }
5490         } elsif (defined $file_name) {
5491                 $title .= " - $file_name";
5492                 $feed_type = 'history';
5493         }
5494         $title .= " $feed_type";
5495         my $descr = git_get_project_description($project);
5496         if (defined $descr) {
5497                 $descr = esc_html($descr);
5498         } else {
5499                 $descr = "$project " .
5500                          ($format eq 'rss' ? 'RSS' : 'Atom') .
5501                          " feed";
5502         }
5503         my $owner = git_get_project_owner($project);
5504         $owner = esc_html($owner);
5505
5506         #header
5507         my $alt_url;
5508         if (defined $file_name) {
5509                 $alt_url = href(-full=>1, action=>"history", hash=>$hash, file_name=>$file_name);
5510         } elsif (defined $hash) {
5511                 $alt_url = href(-full=>1, action=>"log", hash=>$hash);
5512         } else {
5513                 $alt_url = href(-full=>1, action=>"summary");
5514         }
5515         print qq!<?xml version="1.0" encoding="utf-8"?>\n!;
5516         if ($format eq 'rss') {
5517                 print <<XML;
5518 <rss version="2.0" xmlns:content="http://purl.org/rss/1.0/modules/content/">
5519 <channel>
5520 XML
5521                 print "<title>$title</title>\n" .
5522                       "<link>$alt_url</link>\n" .
5523                       "<description>$descr</description>\n" .
5524                       "<language>en</language>\n";
5525         } elsif ($format eq 'atom') {
5526                 print <<XML;
5527 <feed xmlns="http://www.w3.org/2005/Atom">
5528 XML
5529                 print "<title>$title</title>\n" .
5530                       "<subtitle>$descr</subtitle>\n" .
5531                       '<link rel="alternate" type="text/html" href="' .
5532                       $alt_url . '" />' . "\n" .
5533                       '<link rel="self" type="' . $content_type . '" href="' .
5534                       $cgi->self_url() . '" />' . "\n" .
5535                       "<id>" . href(-full=>1) . "</id>\n" .
5536                       # use project owner for feed author
5537                       "<author><name>$owner</name></author>\n";
5538                 if (defined $favicon) {
5539                         print "<icon>" . esc_url($favicon) . "</icon>\n";
5540                 }
5541                 if (defined $logo_url) {
5542                         # not twice as wide as tall: 72 x 27 pixels
5543                         print "<logo>" . esc_url($logo) . "</logo>\n";
5544                 }
5545                 if (! %latest_date) {
5546                         # dummy date to keep the feed valid until commits trickle in:
5547                         print "<updated>1970-01-01T00:00:00Z</updated>\n";
5548                 } else {
5549                         print "<updated>$latest_date{'iso-8601'}</updated>\n";
5550                 }
5551         }
5552
5553         # contents
5554         for (my $i = 0; $i <= $#commitlist; $i++) {
5555                 my %co = %{$commitlist[$i]};
5556                 my $commit = $co{'id'};
5557                 # we read 150, we always show 30 and the ones more recent than 48 hours
5558                 if (($i >= 20) && ((time - $co{'author_epoch'}) > 48*60*60)) {
5559                         last;
5560                 }
5561                 my %cd = parse_date($co{'author_epoch'});
5562
5563                 # get list of changed files
5564                 open my $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
5565                         $co{'parent'} || "--root",
5566                         $co{'id'}, "--", (defined $file_name ? $file_name : ())
5567                         or next;
5568                 my @difftree = map { chomp; $_ } <$fd>;
5569                 close $fd
5570                         or next;
5571
5572                 # print element (entry, item)
5573                 my $co_url = href(-full=>1, action=>"commit", hash=>$commit);
5574                 if ($format eq 'rss') {
5575                         print "<item>\n" .
5576                               "<title>" . esc_html($co{'title'}) . "</title>\n" .
5577                               "<author>" . esc_html($co{'author'}) . "</author>\n" .
5578                               "<pubDate>$cd{'rfc2822'}</pubDate>\n" .
5579                               "<guid isPermaLink=\"true\">$co_url</guid>\n" .
5580                               "<link>$co_url</link>\n" .
5581                               "<description>" . esc_html($co{'title'}) . "</description>\n" .
5582                               "<content:encoded>" .
5583                               "<![CDATA[\n";
5584                 } elsif ($format eq 'atom') {
5585                         print "<entry>\n" .
5586                               "<title type=\"html\">" . esc_html($co{'title'}) . "</title>\n" .
5587                               "<updated>$cd{'iso-8601'}</updated>\n" .
5588                               "<author>\n" .
5589                               "  <name>" . esc_html($co{'author_name'}) . "</name>\n";
5590                         if ($co{'author_email'}) {
5591                                 print "  <email>" . esc_html($co{'author_email'}) . "</email>\n";
5592                         }
5593                         print "</author>\n" .
5594                               # use committer for contributor
5595                               "<contributor>\n" .
5596                               "  <name>" . esc_html($co{'committer_name'}) . "</name>\n";
5597                         if ($co{'committer_email'}) {
5598                                 print "  <email>" . esc_html($co{'committer_email'}) . "</email>\n";
5599                         }
5600                         print "</contributor>\n" .
5601                               "<published>$cd{'iso-8601'}</published>\n" .
5602                               "<link rel=\"alternate\" type=\"text/html\" href=\"$co_url\" />\n" .
5603                               "<id>$co_url</id>\n" .
5604                               "<content type=\"xhtml\" xml:base=\"" . esc_url($my_url) . "\">\n" .
5605                               "<div xmlns=\"http://www.w3.org/1999/xhtml\">\n";
5606                 }
5607                 my $comment = $co{'comment'};
5608                 print "<pre>\n";
5609                 foreach my $line (@$comment) {
5610                         $line = esc_html($line);
5611                         print "$line\n";
5612                 }
5613                 print "</pre><ul>\n";
5614                 foreach my $difftree_line (@difftree) {
5615                         my %difftree = parse_difftree_raw_line($difftree_line);
5616                         next if !$difftree{'from_id'};
5617
5618                         my $file = $difftree{'file'} || $difftree{'to_file'};
5619
5620                         print "<li>" .
5621                               "[" .
5622                               $cgi->a({-href => href(-full=>1, action=>"blobdiff",
5623                                                      hash=>$difftree{'to_id'}, hash_parent=>$difftree{'from_id'},
5624                                                      hash_base=>$co{'id'}, hash_parent_base=>$co{'parent'},
5625                                                      file_name=>$file, file_parent=>$difftree{'from_file'}),
5626                                       -title => "diff"}, 'D');
5627                         if ($have_blame) {
5628                                 print $cgi->a({-href => href(-full=>1, action=>"blame",
5629                                                              file_name=>$file, hash_base=>$commit),
5630                                               -title => "blame"}, 'B');
5631                         }
5632                         # if this is not a feed of a file history
5633                         if (!defined $file_name || $file_name ne $file) {
5634                                 print $cgi->a({-href => href(-full=>1, action=>"history",
5635                                                              file_name=>$file, hash=>$commit),
5636                                               -title => "history"}, 'H');
5637                         }
5638                         $file = esc_path($file);
5639                         print "] ".
5640                               "$file</li>\n";
5641                 }
5642                 if ($format eq 'rss') {
5643                         print "</ul>]]>\n" .
5644                               "</content:encoded>\n" .
5645                               "</item>\n";
5646                 } elsif ($format eq 'atom') {
5647                         print "</ul>\n</div>\n" .
5648                               "</content>\n" .
5649                               "</entry>\n";
5650                 }
5651         }
5652
5653         # end of feed
5654         if ($format eq 'rss') {
5655                 print "</channel>\n</rss>\n";
5656         }       elsif ($format eq 'atom') {
5657                 print "</feed>\n";
5658         }
5659 }
5660
5661 sub git_rss {
5662         git_feed('rss');
5663 }
5664
5665 sub git_atom {
5666         git_feed('atom');
5667 }
5668
5669 sub git_opml {
5670         my @list = git_get_projects_list();
5671
5672         print $cgi->header(-type => 'text/xml', -charset => 'utf-8');
5673         print <<XML;
5674 <?xml version="1.0" encoding="utf-8"?>
5675 <opml version="1.0">
5676 <head>
5677   <title>$site_name OPML Export</title>
5678 </head>
5679 <body>
5680 <outline text="git RSS feeds">
5681 XML
5682
5683         foreach my $pr (@list) {
5684                 my %proj = %$pr;
5685                 my $head = git_get_head_hash($proj{'path'});
5686                 if (!defined $head) {
5687                         next;
5688                 }
5689                 $git_dir = "$projectroot/$proj{'path'}";
5690                 my %co = parse_commit($head);
5691                 if (!%co) {
5692                         next;
5693                 }
5694
5695                 my $path = esc_html(chop_str($proj{'path'}, 25, 5));
5696                 my $rss  = "$my_url?p=$proj{'path'};a=rss";
5697                 my $html = "$my_url?p=$proj{'path'};a=summary";
5698                 print "<outline type=\"rss\" text=\"$path\" title=\"$path\" xmlUrl=\"$rss\" htmlUrl=\"$html\"/>\n";
5699         }
5700         print <<XML;
5701 </outline>
5702 </body>
5703 </opml>
5704 XML
5705 }