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

   1 #!/usr/bin/perl
   2
   3 # gitweb - simple web interface to track changes in git repositories
   4 #
   5 # (C) 2005-2006, Kay Sievers <kay.sievers@vrfy.org>
   6 # (C) 2005, Christian Gierke
   7 #
   8 # This program is licensed under the GPLv2
   9
  10 use strict;
  11 use warnings;
  12 use CGI qw(:standard :escapeHTML -nosticky);
  13 use CGI::Util qw(unescape);
  14 use CGI::Carp qw(fatalsToBrowser);
  15 use Encode;
  16 use Fcntl ':mode';
  17 use File::Find qw();
  18 use File::Basename qw(basename);
  19 binmode STDOUT, ':utf8';
  20
  21 BEGIN {
  22         CGI->compile() if $ENV{'MOD_PERL'};
  23 }
  24
  25 our $cgi = new CGI;
  26 our $version = "++GIT_VERSION++";
  27 our $my_url = $cgi->url();
  28 our $my_uri = $cgi->url(-absolute => 1);
  29
  30 # if we're called with PATH_INFO, we have to strip that
  31 # from the URL to find our real URL
  32 if (my $path_info = $ENV{"PATH_INFO"}) {
  33         $my_url =~ s,\Q$path_info\E$,,;
  34         $my_uri =~ s,\Q$path_info\E$,,;
  35 }
  36
  37 # core git executable to use
  38 # this can just be "git" if your webserver has a sensible PATH
  39 our $GIT = "++GIT_BINDIR++/git";
  40
  41 # absolute fs-path which will be prepended to the project path
  42 #our $projectroot = "/pub/scm";
  43 our $projectroot = "++GITWEB_PROJECTROOT++";
  44
  45 # fs traversing limit for getting project list
  46 # the number is relative to the projectroot
  47 our $project_maxdepth = "++GITWEB_PROJECT_MAXDEPTH++";
  48
  49 # target of the home link on top of all pages
  50 our $home_link = $my_uri || "/";
  51
  52 # string of the home link on top of all pages
  53 our $home_link_str = "++GITWEB_HOME_LINK_STR++";
  54
  55 # name of your site or organization to appear in page titles
  56 # replace this with something more descriptive for clearer bookmarks
  57 our $site_name = "++GITWEB_SITENAME++"
  58                  || ($ENV{'SERVER_NAME'} || "Untitled") . " Git";
  59
  60 # filename of html text to include at top of each page
  61 our $site_header = "++GITWEB_SITE_HEADER++";
  62 # html text to include at home page
  63 our $home_text = "++GITWEB_HOMETEXT++";
  64 # filename of html text to include at bottom of each page
  65 our $site_footer = "++GITWEB_SITE_FOOTER++";
  66
  67 # URI of stylesheets
  68 our @stylesheets = ("++GITWEB_CSS++");
  69 # URI of a single stylesheet, which can be overridden in GITWEB_CONFIG.
  70 our $stylesheet = undef;
  71
  72 # URI of GIT logo (72x27 size)
  73 our $logo = "++GITWEB_LOGO++";
  74 # URI of GIT favicon, assumed to be image/png type
  75 our $favicon = "++GITWEB_FAVICON++";
  76
  77 # URI and label (title) of GIT logo link
  78 #our $logo_url = "http://www.kernel.org/pub/software/scm/git/docs/";
  79 #our $logo_label = "git documentation";
  80 our $logo_url = "http://git.or.cz/";
  81 our $logo_label = "git homepage";
  82
  83 # source of projects list
  84 our $projects_list = "++GITWEB_LIST++";
  85
  86 # the width (in characters) of the projects list "Description" column
  87 our $projects_list_description_width = 25;
  88
  89 # default order of projects list
  90 # valid values are none, project, descr, owner, and age
  91 our $default_projects_order = "project";
  92
  93 # show repository only if this file exists
  94 # (only effective if this variable evaluates to true)
  95 our $export_ok = "++GITWEB_EXPORT_OK++";
  96
  97 # only allow viewing of repositories also shown on the overview page
  98 our $strict_export = "++GITWEB_STRICT_EXPORT++";
  99
 100 # list of git base URLs used for URL to where fetch project from,
 101 # i.e. full URL is "$git_base_url/$project"
 102 our @git_base_url_list = grep { $_ ne '' } ("++GITWEB_BASE_URL++");
 103
 104 # default blob_plain mimetype and default charset for text/plain blob
 105 our $default_blob_plain_mimetype = 'text/plain';
 106 our $default_text_plain_charset  = undef;
 107
 108 # file to use for guessing MIME types before trying /etc/mime.types
 109 # (relative to the current git repository)
 110 our $mimetypes_file = undef;
 111
 112 # assume this charset if line contains non-UTF-8 characters;
 113 # it should be valid encoding (see Encoding::Supported(3pm) for list),
 114 # for which encoding all byte sequences are valid, for example
 115 # 'iso-8859-1' aka 'latin1' (it is decoded without checking, so it
 116 # could be even 'utf-8' for the old behavior)
 117 our $fallback_encoding = 'latin1';
 118
 119 # rename detection options for git-diff and git-diff-tree
 120 # - default is '-M', with the cost proportional to
 121 #   (number of removed files) * (number of new files).
 122 # - more costly is '-C' (which implies '-M'), with the cost proportional to
 123 #   (number of changed files + number of removed files) * (number of new files)
 124 # - even more costly is '-C', '--find-copies-harder' with cost
 125 #   (number of files in the original tree) * (number of new files)
 126 # - one might want to include '-B' option, e.g. '-B', '-M'
 127 our @diff_opts = ('-M'); # taken from git_commit
 128
 129 # information about snapshot formats that gitweb is capable of serving
 130 our %known_snapshot_formats = (
 131         # name => {
 132         #       'display' => display name,
 133         #       'type' => mime type,
 134         #       'suffix' => filename suffix,
 135         #       'format' => --format for git-archive,
 136         #       'compressor' => [compressor command and arguments]
 137         #                       (array reference, optional)}
 138         #
 139         'tgz' => {
 140                 'display' => 'tar.gz',
 141                 'type' => 'application/x-gzip',
 142                 'suffix' => '.tar.gz',
 143                 'format' => 'tar',
 144                 'compressor' => ['gzip']},
 145
 146         'tbz2' => {
 147                 'display' => 'tar.bz2',
 148                 'type' => 'application/x-bzip2',
 149                 'suffix' => '.tar.bz2',
 150                 'format' => 'tar',
 151                 'compressor' => ['bzip2']},
 152
 153         'zip' => {
 154                 'display' => 'zip',
 155                 'type' => 'application/x-zip',
 156                 'suffix' => '.zip',
 157                 'format' => 'zip'},
 158 );
 159
 160 # Aliases so we understand old gitweb.snapshot values in repository
 161 # configuration.
 162 our %known_snapshot_format_aliases = (
 163         'gzip'  => 'tgz',
 164         'bzip2' => 'tbz2',
 165
 166         # backward compatibility: legacy gitweb config support
 167         'x-gzip' => undef, 'gz' => undef,
 168         'x-bzip2' => undef, 'bz2' => undef,
 169         'x-zip' => undef, '' => undef,
 170 );
 171
 172 # You define site-wide feature defaults here; override them with
 173 # $GITWEB_CONFIG as necessary.
 174 our %feature = (
 175         # feature => {
 176         #       'sub' => feature-sub (subroutine),
 177         #       'override' => allow-override (boolean),
 178         #       'default' => [ default options...] (array reference)}
 179         #
 180         # if feature is overridable (it means that allow-override has true value),
 181         # then feature-sub will be called with default options as parameters;
 182         # return value of feature-sub indicates if to enable specified feature
 183         #
 184         # if there is no 'sub' key (no feature-sub), then feature cannot be
 185         # overriden
 186         #
 187         # use gitweb_check_feature(<feature>) to check if <feature> is enabled
 188
 189         # Enable the 'blame' blob view, showing the last commit that modified
 190         # each line in the file. This can be very CPU-intensive.
 191
 192         # To enable system wide have in $GITWEB_CONFIG
 193         # $feature{'blame'}{'default'} = [1];
 194         # To have project specific config enable override in $GITWEB_CONFIG
 195         # $feature{'blame'}{'override'} = 1;
 196         # and in project config gitweb.blame = 0|1;
 197         'blame' => {
 198                 'sub' => \&feature_blame,
 199                 'override' => 0,
 200                 'default' => [0]},
 201
 202         # Enable the 'snapshot' link, providing a compressed archive of any
 203         # tree. This can potentially generate high traffic if you have large
 204         # project.
 205
 206         # Value is a list of formats defined in %known_snapshot_formats that
 207         # you wish to offer.
 208         # To disable system wide have in $GITWEB_CONFIG
 209         # $feature{'snapshot'}{'default'} = [];
 210         # To have project specific config enable override in $GITWEB_CONFIG
 211         # $feature{'snapshot'}{'override'} = 1;
 212         # and in project config, a comma-separated list of formats or "none"
 213         # to disable.  Example: gitweb.snapshot = tbz2,zip;
 214         'snapshot' => {
 215                 'sub' => \&feature_snapshot,
 216                 'override' => 0,
 217                 'default' => ['tgz']},
 218
 219         # Enable text search, which will list the commits which match author,
 220         # committer or commit text to a given string.  Enabled by default.
 221         # Project specific override is not supported.
 222         'search' => {
 223                 'override' => 0,
 224                 'default' => [1]},
 225
 226         # Enable grep search, which will list the files in currently selected
 227         # tree containing the given string. Enabled by default. This can be
 228         # potentially CPU-intensive, of course.
 229
 230         # To enable system wide have in $GITWEB_CONFIG
 231         # $feature{'grep'}{'default'} = [1];
 232         # To have project specific config enable override in $GITWEB_CONFIG
 233         # $feature{'grep'}{'override'} = 1;
 234         # and in project config gitweb.grep = 0|1;
 235         'grep' => {
 236                 'override' => 0,
 237                 'default' => [1]},
 238
 239         # Enable the pickaxe search, which will list the commits that modified
 240         # a given string in a file. This can be practical and quite faster
 241         # alternative to 'blame', but still potentially CPU-intensive.
 242
 243         # To enable system wide have in $GITWEB_CONFIG
 244         # $feature{'pickaxe'}{'default'} = [1];
 245         # To have project specific config enable override in $GITWEB_CONFIG
 246         # $feature{'pickaxe'}{'override'} = 1;
 247         # and in project config gitweb.pickaxe = 0|1;
 248         'pickaxe' => {
 249                 'sub' => \&feature_pickaxe,
 250                 'override' => 0,
 251                 'default' => [1]},
 252
 253         # Make gitweb use an alternative format of the URLs which can be
 254         # more readable and natural-looking: project name is embedded
 255         # directly in the path and the query string contains other
 256         # auxiliary information. All gitweb installations recognize
 257         # URL in either format; this configures in which formats gitweb
 258         # generates links.
 259
 260         # To enable system wide have in $GITWEB_CONFIG
 261         # $feature{'pathinfo'}{'default'} = [1];
 262         # Project specific override is not supported.
 263
 264         # Note that you will need to change the default location of CSS,
 265         # favicon, logo and possibly other files to an absolute URL. Also,
 266         # if gitweb.cgi serves as your indexfile, you will need to force
 267         # $my_uri to contain the script name in your $GITWEB_CONFIG.
 268         'pathinfo' => {
 269                 'override' => 0,
 270                 'default' => [0]},
 271
 272         # Make gitweb consider projects in project root subdirectories
 273         # to be forks of existing projects. Given project $projname.git,
 274         # projects matching $projname/*.git will not be shown in the main
 275         # projects list, instead a '+' mark will be added to $projname
 276         # there and a 'forks' view will be enabled for the project, listing
 277         # all the forks. If project list is taken from a file, forks have
 278         # to be listed after the main project.
 279
 280         # To enable system wide have in $GITWEB_CONFIG
 281         # $feature{'forks'}{'default'} = [1];
 282         # Project specific override is not supported.
 283         'forks' => {
 284                 'override' => 0,
 285                 'default' => [0]},
 286
 287         # Insert custom links to the action bar of all project pages.
 288         # This enables you mainly to link to third-party scripts integrating
 289         # into gitweb; e.g. git-browser for graphical history representation
 290         # or custom web-based repository administration interface.
 291
 292         # The 'default' value consists of a list of triplets in the form
 293         # (label, link, position) where position is the label after which
 294         # to inster the link and link is a format string where %n expands
 295         # to the project name, %f to the project path within the filesystem,
 296         # %h to the current hash (h gitweb parameter) and %b to the current
 297         # hash base (hb gitweb parameter).
 298
 299         # To enable system wide have in $GITWEB_CONFIG e.g.
 300         # $feature{'actions'}{'default'} = [('graphiclog',
 301         #       '/git-browser/by-commit.html?r=%n', 'summary')];
 302         # Project specific override is not supported.
 303         'actions' => {
 304                 'override' => 0,
 305                 'default' => []},
 306
 307         # Allow gitweb scan project content tags described in ctags/
 308         # of project repository, and display the popular Web 2.0-ish
 309         # "tag cloud" near the project list. Note that this is something
 310         # COMPLETELY different from the normal Git tags.
 311
 312         # gitweb by itself can show existing tags, but it does not handle
 313         # tagging itself; you need an external application for that.
 314         # For an example script, check Girocco's cgi/tagproj.cgi.
 315         # You may want to install the HTML::TagCloud Perl module to get
 316         # a pretty tag cloud instead of just a list of tags.
 317
 318         # To enable system wide have in $GITWEB_CONFIG
 319         # $feature{'ctags'}{'default'} = ['path_to_tag_script'];
 320         # Project specific override is not supported.
 321         'ctags' => {
 322                 'override' => 0,
 323                 'default' => [0]},
 324 );
 325
 326 sub gitweb_check_feature {
 327         my ($name) = @_;
 328         return unless exists $feature{$name};
 329         my ($sub, $override, @defaults) = (
 330                 $feature{$name}{'sub'},
 331                 $feature{$name}{'override'},
 332                 @{$feature{$name}{'default'}});
 333         if (!$override) { return @defaults; }
 334         if (!defined $sub) {
 335                 warn "feature $name is not overrideable";
 336                 return @defaults;
 337         }
 338         return $sub->(@defaults);
 339 }
 340
 341 sub feature_blame {
 342         my ($val) = git_get_project_config('blame', '--bool');
 343
 344         if ($val eq 'true') {
 345                 return 1;
 346         } elsif ($val eq 'false') {
 347                 return 0;
 348         }
 349
 350         return $_[0];
 351 }
 352
 353 sub feature_snapshot {
 354         my (@fmts) = @_;
 355
 356         my ($val) = git_get_project_config('snapshot');
 357
 358         if ($val) {
 359                 @fmts = ($val eq 'none' ? () : split /\s*[,\s]\s*/, $val);
 360         }
 361
 362         return @fmts;
 363 }
 364
 365 sub feature_grep {
 366         my ($val) = git_get_project_config('grep', '--bool');
 367
 368         if ($val eq 'true') {
 369                 return (1);
 370         } elsif ($val eq 'false') {
 371                 return (0);
 372         }
 373
 374         return ($_[0]);
 375 }
 376
 377 sub feature_pickaxe {
 378         my ($val) = git_get_project_config('pickaxe', '--bool');
 379
 380         if ($val eq 'true') {
 381                 return (1);
 382         } elsif ($val eq 'false') {
 383                 return (0);
 384         }
 385
 386         return ($_[0]);
 387 }
 388
 389 # checking HEAD file with -e is fragile if the repository was
 390 # initialized long time ago (i.e. symlink HEAD) and was pack-ref'ed
 391 # and then pruned.
 392 sub check_head_link {
 393         my ($dir) = @_;
 394         my $headfile = "$dir/HEAD";
 395         return ((-e $headfile) ||
 396                 (-l $headfile && readlink($headfile) =~ /^refs\/heads\//));
 397 }
 398
 399 sub check_export_ok {
 400         my ($dir) = @_;
 401         return (check_head_link($dir) &&
 402                 (!$export_ok || -e "$dir/$export_ok"));
 403 }
 404
 405 # process alternate names for backward compatibility
 406 # filter out unsupported (unknown) snapshot formats
 407 sub filter_snapshot_fmts {
 408         my @fmts = @_;
 409
 410         @fmts = map {
 411                 exists $known_snapshot_format_aliases{$_} ?
 412                        $known_snapshot_format_aliases{$_} : $_} @fmts;
 413         @fmts = grep(exists $known_snapshot_formats{$_}, @fmts);
 414
 415 }
 416
 417 our $GITWEB_CONFIG = $ENV{'GITWEB_CONFIG'} || "++GITWEB_CONFIG++";
 418 if (-e $GITWEB_CONFIG) {
 419         do $GITWEB_CONFIG;
 420 } else {
 421         our $GITWEB_CONFIG_SYSTEM = $ENV{'GITWEB_CONFIG_SYSTEM'} || "++GITWEB_CONFIG_SYSTEM++";
 422         do $GITWEB_CONFIG_SYSTEM if -e $GITWEB_CONFIG_SYSTEM;
 423 }
 424
 425 # version of the core git binary
 426 our $git_version = qx("$GIT" --version) =~ m/git version (.*)$/ ? $1 : "unknown";
 427
 428 $projects_list ||= $projectroot;
 429
 430 # ======================================================================
 431 # input validation and dispatch
 432 our $action = $cgi->param('a');
 433 if (defined $action) {
 434         if ($action =~ m/[^0-9a-zA-Z\.\-_]/) {
 435                 die_error(400, "Invalid action parameter");
 436         }
 437 }
 438
 439 # parameters which are pathnames
 440 our $project = $cgi->param('p');
 441 if (defined $project) {
 442         if (!validate_pathname($project) ||
 443             !(-d "$projectroot/$project") ||
 444             !check_head_link("$projectroot/$project") ||
 445             ($export_ok && !(-e "$projectroot/$project/$export_ok")) ||
 446             ($strict_export && !project_in_list($project))) {
 447                 undef $project;
 448                 die_error(404, "No such project");
 449         }
 450 }
 451
 452 our $file_name = $cgi->param('f');
 453 if (defined $file_name) {
 454         if (!validate_pathname($file_name)) {
 455                 die_error(400, "Invalid file parameter");
 456         }
 457 }
 458
 459 our $file_parent = $cgi->param('fp');
 460 if (defined $file_parent) {
 461         if (!validate_pathname($file_parent)) {
 462                 die_error(400, "Invalid file parent parameter");
 463         }
 464 }
 465
 466 # parameters which are refnames
 467 our $hash = $cgi->param('h');
 468 if (defined $hash) {
 469         if (!validate_refname($hash)) {
 470                 die_error(400, "Invalid hash parameter");
 471         }
 472 }
 473
 474 our $hash_parent = $cgi->param('hp');
 475 if (defined $hash_parent) {
 476         if (!validate_refname($hash_parent)) {
 477                 die_error(400, "Invalid hash parent parameter");
 478         }
 479 }
 480
 481 our $hash_base = $cgi->param('hb');
 482 if (defined $hash_base) {
 483         if (!validate_refname($hash_base)) {
 484                 die_error(400, "Invalid hash base parameter");
 485         }
 486 }
 487
 488 my %allowed_options = (
 489         "--no-merges" => [ qw(rss atom log shortlog history) ],
 490 );
 491
 492 our @extra_options = $cgi->param('opt');
 493 if (defined @extra_options) {
 494         foreach my $opt (@extra_options) {
 495                 if (not exists $allowed_options{$opt}) {
 496                         die_error(400, "Invalid option parameter");
 497                 }
 498                 if (not grep(/^$action$/, @{$allowed_options{$opt}})) {
 499                         die_error(400, "Invalid option parameter for this action");
 500                 }
 501         }
 502 }
 503
 504 our $hash_parent_base = $cgi->param('hpb');
 505 if (defined $hash_parent_base) {
 506         if (!validate_refname($hash_parent_base)) {
 507                 die_error(400, "Invalid hash parent base parameter");
 508         }
 509 }
 510
 511 # other parameters
 512 our $page = $cgi->param('pg');
 513 if (defined $page) {
 514         if ($page =~ m/[^0-9]/) {
 515                 die_error(400, "Invalid page parameter");
 516         }
 517 }
 518
 519 our $searchtype = $cgi->param('st');
 520 if (defined $searchtype) {
 521         if ($searchtype =~ m/[^a-z]/) {
 522                 die_error(400, "Invalid searchtype parameter");
 523         }
 524 }
 525
 526 our $search_use_regexp = $cgi->param('sr');
 527
 528 our $searchtext = $cgi->param('s');
 529 our $search_regexp;
 530 if (defined $searchtext) {
 531         if (length($searchtext) < 2) {
 532                 die_error(403, "At least two characters are required for search parameter");
 533         }
 534         $search_regexp = $search_use_regexp ? $searchtext : quotemeta $searchtext;
 535 }
 536
 537 # now read PATH_INFO and use it as alternative to parameters
 538 sub evaluate_path_info {
 539         return if defined $project;
 540         my $path_info = $ENV{"PATH_INFO"};
 541         return if !$path_info;
 542         $path_info =~ s,^/+,,;
 543         return if !$path_info;
 544         # find which part of PATH_INFO is project
 545         $project = $path_info;
 546         $project =~ s,/+$,,;
 547         while ($project && !check_head_link("$projectroot/$project")) {
 548                 $project =~ s,/*[^/]*$,,;
 549         }
 550         # validate project
 551         $project = validate_pathname($project);
 552         if (!$project ||
 553             ($export_ok && !-e "$projectroot/$project/$export_ok") ||
 554             ($strict_export && !project_in_list($project))) {
 555                 undef $project;
 556                 return;
 557         }
 558         # do not change any parameters if an action is given using the query string
 559         return if $action;
 560         $path_info =~ s,^\Q$project\E/*,,;
 561         my ($refname, $pathname) = split(/:/, $path_info, 2);
 562         if (defined $pathname) {
 563                 # we got "project.git/branch:filename" or "project.git/branch:dir/"
 564                 # we could use git_get_type(branch:pathname), but it needs $git_dir
 565                 $pathname =~ s,^/+,,;
 566                 if (!$pathname || substr($pathname, -1) eq "/") {
 567                         $action  ||= "tree";
 568                         $pathname =~ s,/$,,;
 569                 } else {
 570                         $action  ||= "blob_plain";
 571                 }
 572                 $hash_base ||= validate_refname($refname);
 573                 $file_name ||= validate_pathname($pathname);
 574         } elsif (defined $refname) {
 575                 # we got "project.git/branch"
 576                 $action ||= "shortlog";
 577                 $hash   ||= validate_refname($refname);
 578         }
 579 }
 580 evaluate_path_info();
 581
 582 # path to the current git repository
 583 our $git_dir;
 584 $git_dir = "$projectroot/$project" if $project;
 585
 586 # dispatch
 587 my %actions = (
 588         "blame" => \&git_blame,
 589         "blobdiff" => \&git_blobdiff,
 590         "blobdiff_plain" => \&git_blobdiff_plain,
 591         "blob" => \&git_blob,
 592         "blob_plain" => \&git_blob_plain,
 593         "commitdiff" => \&git_commitdiff,
 594         "commitdiff_plain" => \&git_commitdiff_plain,
 595         "commit" => \&git_commit,
 596         "forks" => \&git_forks,
 597         "heads" => \&git_heads,
 598         "history" => \&git_history,
 599         "log" => \&git_log,
 600         "rss" => \&git_rss,
 601         "atom" => \&git_atom,
 602         "search" => \&git_search,
 603         "search_help" => \&git_search_help,
 604         "shortlog" => \&git_shortlog,
 605         "summary" => \&git_summary,
 606         "tag" => \&git_tag,
 607         "tags" => \&git_tags,
 608         "tree" => \&git_tree,
 609         "snapshot" => \&git_snapshot,
 610         "object" => \&git_object,
 611         # those below don't need $project
 612         "opml" => \&git_opml,
 613         "project_list" => \&git_project_list,
 614         "project_index" => \&git_project_index,
 615 );
 616
 617 if (!defined $action) {
 618         if (defined $hash) {
 619                 $action = git_get_type($hash);
 620         } elsif (defined $hash_base && defined $file_name) {
 621                 $action = git_get_type("$hash_base:$file_name");
 622         } elsif (defined $project) {
 623                 $action = 'summary';
 624         } else {
 625                 $action = 'project_list';
 626         }
 627 }
 628 if (!defined($actions{$action})) {
 629         die_error(400, "Unknown action");
 630 }
 631 if ($action !~ m/^(opml|project_list|project_index)$/ &&
 632     !$project) {
 633         die_error(400, "Project needed");
 634 }
 635 $actions{$action}->();
 636 exit;
 637
 638 ## ======================================================================
 639 ## action links
 640
 641 sub href (%) {
 642         my %params = @_;
 643         # default is to use -absolute url() i.e. $my_uri
 644         my $href = $params{-full} ? $my_url : $my_uri;
 645
 646         # XXX: Warning: If you touch this, check the search form for updating,
 647         # too.
 648
 649         my @mapping = (
 650                 project => "p",
 651                 action => "a",
 652                 file_name => "f",
 653                 file_parent => "fp",
 654                 hash => "h",
 655                 hash_parent => "hp",
 656                 hash_base => "hb",
 657                 hash_parent_base => "hpb",
 658                 page => "pg",
 659                 order => "o",
 660                 searchtext => "s",
 661                 searchtype => "st",
 662                 snapshot_format => "sf",
 663                 extra_options => "opt",
 664                 search_use_regexp => "sr",
 665         );
 666         my %mapping = @mapping;
 667
 668         $params{'project'} = $project unless exists $params{'project'};
 669
 670         if ($params{-replay}) {
 671                 while (my ($name, $symbol) = each %mapping) {
 672                         if (!exists $params{$name}) {
 673                                 # to allow for multivalued params we use arrayref form
 674                                 $params{$name} = [ $cgi->param($symbol) ];
 675                         }
 676                 }
 677         }
 678
 679         my ($use_pathinfo) = gitweb_check_feature('pathinfo');
 680         if ($use_pathinfo) {
 681                 # use PATH_INFO for project name
 682                 $href .= "/".esc_url($params{'project'}) if defined $params{'project'};
 683                 delete $params{'project'};
 684
 685                 # Summary just uses the project path URL
 686                 if (defined $params{'action'} && $params{'action'} eq 'summary') {
 687                         delete $params{'action'};
 688                 }
 689         }
 690
 691         # now encode the parameters explicitly
 692         my @result = ();
 693         for (my $i = 0; $i < @mapping; $i += 2) {
 694                 my ($name, $symbol) = ($mapping[$i], $mapping[$i+1]);
 695                 if (defined $params{$name}) {
 696                         if (ref($params{$name}) eq "ARRAY") {
 697                                 foreach my $par (@{$params{$name}}) {
 698                                         push @result, $symbol . "=" . esc_param($par);
 699                                 }
 700                         } else {
 701                                 push @result, $symbol . "=" . esc_param($params{$name});
 702                         }
 703                 }
 704         }
 705         $href .= "?" . join(';', @result) if scalar @result;
 706
 707         return $href;
 708 }
 709
 710
 711 ## ======================================================================
 712 ## validation, quoting/unquoting and escaping
 713
 714 sub validate_pathname {
 715         my $input = shift || return undef;
 716
 717         # no '.' or '..' as elements of path, i.e. no '.' nor '..'
 718         # at the beginning, at the end, and between slashes.
 719         # also this catches doubled slashes
 720         if ($input =~ m!(^|/)(|\.|\.\.)(/|$)!) {
 721                 return undef;
 722         }
 723         # no null characters
 724         if ($input =~ m!\0!) {
 725                 return undef;
 726         }
 727         return $input;
 728 }
 729
 730 sub validate_refname {
 731         my $input = shift || return undef;
 732
 733         # textual hashes are O.K.
 734         if ($input =~ m/^[0-9a-fA-F]{40}$/) {
 735                 return $input;
 736         }
 737         # it must be correct pathname
 738         $input = validate_pathname($input)
 739                 or return undef;
 740         # restrictions on ref name according to git-check-ref-format
 741         if ($input =~ m!(/\.|\.\.|[\000-\040\177 ~^:?*\[]|/$)!) {
 742                 return undef;
 743         }
 744         return $input;
 745 }
 746
 747 # decode sequences of octets in utf8 into Perl's internal form,
 748 # which is utf-8 with utf8 flag set if needed.  gitweb writes out
 749 # in utf-8 thanks to "binmode STDOUT, ':utf8'" at beginning
 750 sub to_utf8 {
 751         my $str = shift;
 752         if (utf8::valid($str)) {
 753                 utf8::decode($str);
 754                 return $str;
 755         } else {
 756                 return decode($fallback_encoding, $str, Encode::FB_DEFAULT);
 757         }
 758 }
 759
 760 # quote unsafe chars, but keep the slash, even when it's not
 761 # correct, but quoted slashes look too horrible in bookmarks
 762 sub esc_param {
 763         my $str = shift;
 764         $str =~ s/([^A-Za-z0-9\-_.~()\/:@])/sprintf("%%%02X", ord($1))/eg;
 765         $str =~ s/\+/%2B/g;
 766         $str =~ s/ /\+/g;
 767         return $str;
 768 }
 769
 770 # quote unsafe chars in whole URL, so some charactrs cannot be quoted
 771 sub esc_url {
 772         my $str = shift;
 773         $str =~ s/([^A-Za-z0-9\-_.~();\/;?:@&=])/sprintf("%%%02X", ord($1))/eg;
 774         $str =~ s/\+/%2B/g;
 775         $str =~ s/ /\+/g;
 776         return $str;
 777 }
 778
 779 # replace invalid utf8 character with SUBSTITUTION sequence
 780 sub esc_html ($;%) {
 781         my $str = shift;
 782         my %opts = @_;
 783
 784         $str = to_utf8($str);
 785         $str = $cgi->escapeHTML($str);
 786         if ($opts{'-nbsp'}) {
 787                 $str =~ s/ /&nbsp;/g;
 788         }
 789         $str =~ s|([[:cntrl:]])|(($1 ne "\t") ? quot_cec($1) : $1)|eg;
 790         return $str;
 791 }
 792
 793 # quote control characters and escape filename to HTML
 794 sub esc_path {
 795         my $str = shift;
 796         my %opts = @_;
 797
 798         $str = to_utf8($str);
 799         $str = $cgi->escapeHTML($str);
 800         if ($opts{'-nbsp'}) {
 801                 $str =~ s/ /&nbsp;/g;
 802         }
 803         $str =~ s|([[:cntrl:]])|quot_cec($1)|eg;
 804         return $str;
 805 }
 806
 807 # Make control characters "printable", using character escape codes (CEC)
 808 sub quot_cec {
 809         my $cntrl = shift;
 810         my %opts = @_;
 811         my %es = ( # character escape codes, aka escape sequences
 812                 "\t" => '\t',   # tab            (HT)
 813                 "\n" => '\n',   # line feed      (LF)
 814                 "\r" => '\r',   # carrige return (CR)
 815                 "\f" => '\f',   # form feed      (FF)
 816                 "\b" => '\b',   # backspace      (BS)
 817                 "\a" => '\a',   # alarm (bell)   (BEL)
 818                 "\e" => '\e',   # escape         (ESC)
 819                 "\013" => '\v', # vertical tab   (VT)
 820                 "\000" => '\0', # nul character  (NUL)
 821         );
 822         my $chr = ( (exists $es{$cntrl})
 823                     ? $es{$cntrl}
 824                     : sprintf('\%2x', ord($cntrl)) );
 825         if ($opts{-nohtml}) {
 826                 return $chr;
 827         } else {
 828                 return "<span class=\"cntrl\">$chr</span>";
 829         }
 830 }
 831
 832 # Alternatively use unicode control pictures codepoints,
 833 # Unicode "printable representation" (PR)
 834 sub quot_upr {
 835         my $cntrl = shift;
 836         my %opts = @_;
 837
 838         my $chr = sprintf('&#%04d;', 0x2400+ord($cntrl));
 839         if ($opts{-nohtml}) {
 840                 return $chr;
 841         } else {
 842                 return "<span class=\"cntrl\">$chr</span>";
 843         }
 844 }
 845
 846 # git may return quoted and escaped filenames
 847 sub unquote {
 848         my $str = shift;
 849
 850         sub unq {
 851                 my $seq = shift;
 852                 my %es = ( # character escape codes, aka escape sequences
 853                         't' => "\t",   # tab            (HT, TAB)
 854                         'n' => "\n",   # newline        (NL)
 855                         'r' => "\r",   # return         (CR)
 856                         'f' => "\f",   # form feed      (FF)
 857                         'b' => "\b",   # backspace      (BS)
 858                         'a' => "\a",   # alarm (bell)   (BEL)
 859                         'e' => "\e",   # escape         (ESC)
 860                         'v' => "\013", # vertical tab   (VT)
 861                 );
 862
 863                 if ($seq =~ m/^[0-7]{1,3}$/) {
 864                         # octal char sequence
 865                         return chr(oct($seq));
 866                 } elsif (exists $es{$seq}) {
 867                         # C escape sequence, aka character escape code
 868                         return $es{$seq};
 869                 }
 870                 # quoted ordinary character
 871                 return $seq;
 872         }
 873
 874         if ($str =~ m/^"(.*)"$/) {
 875                 # needs unquoting
 876                 $str = $1;
 877                 $str =~ s/\\([^0-7]|[0-7]{1,3})/unq($1)/eg;
 878         }
 879         return $str;
 880 }
 881
 882 # escape tabs (convert tabs to spaces)
 883 sub untabify {
 884         my $line = shift;
 885
 886         while ((my $pos = index($line, "\t")) != -1) {
 887                 if (my $count = (8 - ($pos % 8))) {
 888                         my $spaces = ' ' x $count;
 889                         $line =~ s/\t/$spaces/;
 890                 }
 891         }
 892
 893         return $line;
 894 }
 895
 896 sub project_in_list {
 897         my $project = shift;
 898         my @list = git_get_projects_list();
 899         return @list && scalar(grep { $_->{'path'} eq $project } @list);
 900 }
 901
 902 ## ----------------------------------------------------------------------
 903 ## HTML aware string manipulation
 904
 905 # Try to chop given string on a word boundary between position
 906 # $len and $len+$add_len. If there is no word boundary there,
 907 # chop at $len+$add_len. Do not chop if chopped part plus ellipsis
 908 # (marking chopped part) would be longer than given string.
 909 sub chop_str {
 910         my $str = shift;
 911         my $len = shift;
 912         my $add_len = shift || 10;
 913         my $where = shift || 'right'; # 'left' | 'center' | 'right'
 914
 915         # Make sure perl knows it is utf8 encoded so we don't
 916         # cut in the middle of a utf8 multibyte char.
 917         $str = to_utf8($str);
 918
 919         # allow only $len chars, but don't cut a word if it would fit in $add_len
 920         # if it doesn't fit, cut it if it's still longer than the dots we would add
 921         # remove chopped character entities entirely
 922
 923         # when chopping in the middle, distribute $len into left and right part
 924         # return early if chopping wouldn't make string shorter
 925         if ($where eq 'center') {
 926                 return $str if ($len + 5 >= length($str)); # filler is length 5
 927                 $len = int($len/2);
 928         } else {
 929                 return $str if ($len + 4 >= length($str)); # filler is length 4
 930         }
 931
 932         # regexps: ending and beginning with word part up to $add_len
 933         my $endre = qr/.{$len}\w{0,$add_len}/;
 934         my $begre = qr/\w{0,$add_len}.{$len}/;
 935
 936         if ($where eq 'left') {
 937                 $str =~ m/^(.*?)($begre)$/;
 938                 my ($lead, $body) = ($1, $2);
 939                 if (length($lead) > 4) {
 940                         $body =~ s/^[^;]*;// if ($lead =~ m/&[^;]*$/);
 941                         $lead = " ...";
 942                 }
 943                 return "$lead$body";
 944
 945         } elsif ($where eq 'center') {
 946                 $str =~ m/^($endre)(.*)$/;
 947                 my ($left, $str)  = ($1, $2);
 948                 $str =~ m/^(.*?)($begre)$/;
 949                 my ($mid, $right) = ($1, $2);
 950                 if (length($mid) > 5) {
 951                         $left  =~ s/&[^;]*$//;
 952                         $right =~ s/^[^;]*;// if ($mid =~ m/&[^;]*$/);
 953                         $mid = " ... ";
 954                 }
 955                 return "$left$mid$right";
 956
 957         } else {
 958                 $str =~ m/^($endre)(.*)$/;
 959                 my $body = $1;
 960                 my $tail = $2;
 961                 if (length($tail) > 4) {
 962                         $body =~ s/&[^;]*$//;
 963                         $tail = "... ";
 964                 }
 965                 return "$body$tail";
 966         }
 967 }
 968
 969 # takes the same arguments as chop_str, but also wraps a <span> around the
 970 # result with a title attribute if it does get chopped. Additionally, the
 971 # string is HTML-escaped.
 972 sub chop_and_escape_str {
 973         my ($str) = @_;
 974
 975         my $chopped = chop_str(@_);
 976         if ($chopped eq $str) {
 977                 return esc_html($chopped);
 978         } else {
 979                 $str =~ s/([[:cntrl:]])/?/g;
 980                 return $cgi->span({-title=>$str}, esc_html($chopped));
 981         }
 982 }
 983
 984 ## ----------------------------------------------------------------------
 985 ## functions returning short strings
 986
 987 # CSS class for given age value (in seconds)
 988 sub age_class {
 989         my $age = shift;
 990
 991         if (!defined $age) {
 992                 return "noage";
 993         } elsif ($age < 60*60*2) {
 994                 return "age0";
 995         } elsif ($age < 60*60*24*2) {
 996                 return "age1";
 997         } else {
 998                 return "age2";
 999         }
1000 }
1001
1002 # convert age in seconds to "nn units ago" string
1003 sub age_string {
1004         my $age = shift;
1005         my $age_str;
1006
1007         if ($age > 60*60*24*365*2) {
1008                 $age_str = (int $age/60/60/24/365);
1009                 $age_str .= " years ago";
1010         } elsif ($age > 60*60*24*(365/12)*2) {
1011                 $age_str = int $age/60/60/24/(365/12);
1012                 $age_str .= " months ago";
1013         } elsif ($age > 60*60*24*7*2) {
1014                 $age_str = int $age/60/60/24/7;
1015                 $age_str .= " weeks ago";
1016         } elsif ($age > 60*60*24*2) {
1017                 $age_str = int $age/60/60/24;
1018                 $age_str .= " days ago";
1019         } elsif ($age > 60*60*2) {
1020                 $age_str = int $age/60/60;
1021                 $age_str .= " hours ago";
1022         } elsif ($age > 60*2) {
1023                 $age_str = int $age/60;
1024                 $age_str .= " min ago";
1025         } elsif ($age > 2) {
1026                 $age_str = int $age;
1027                 $age_str .= " sec ago";
1028         } else {
1029                 $age_str .= " right now";
1030         }
1031         return $age_str;
1032 }
1033
1034 use constant {
1035         S_IFINVALID => 0030000,
1036         S_IFGITLINK => 0160000,
1037 };
1038
1039 # submodule/subproject, a commit object reference
1040 sub S_ISGITLINK($) {
1041         my $mode = shift;
1042
1043         return (($mode & S_IFMT) == S_IFGITLINK)
1044 }
1045
1046 # convert file mode in octal to symbolic file mode string
1047 sub mode_str {
1048         my $mode = oct shift;
1049
1050         if (S_ISGITLINK($mode)) {
1051                 return 'm---------';
1052         } elsif (S_ISDIR($mode & S_IFMT)) {
1053                 return 'drwxr-xr-x';
1054         } elsif (S_ISLNK($mode)) {
1055                 return 'lrwxrwxrwx';
1056         } elsif (S_ISREG($mode)) {
1057                 # git cares only about the executable bit
1058                 if ($mode & S_IXUSR) {
1059                         return '-rwxr-xr-x';
1060                 } else {
1061                         return '-rw-r--r--';
1062                 };
1063         } else {
1064                 return '----------';
1065         }
1066 }
1067
1068 # convert file mode in octal to file type string
1069 sub file_type {
1070         my $mode = shift;
1071
1072         if ($mode !~ m/^[0-7]+$/) {
1073                 return $mode;
1074         } else {
1075                 $mode = oct $mode;
1076         }
1077
1078         if (S_ISGITLINK($mode)) {
1079                 return "submodule";
1080         } elsif (S_ISDIR($mode & S_IFMT)) {
1081                 return "directory";
1082         } elsif (S_ISLNK($mode)) {
1083                 return "symlink";
1084         } elsif (S_ISREG($mode)) {
1085                 return "file";
1086         } else {
1087                 return "unknown";
1088         }
1089 }
1090
1091 # convert file mode in octal to file type description string
1092 sub file_type_long {
1093         my $mode = shift;
1094
1095         if ($mode !~ m/^[0-7]+$/) {
1096                 return $mode;
1097         } else {
1098                 $mode = oct $mode;
1099         }
1100
1101         if (S_ISGITLINK($mode)) {
1102                 return "submodule";
1103         } elsif (S_ISDIR($mode & S_IFMT)) {
1104                 return "directory";
1105         } elsif (S_ISLNK($mode)) {
1106                 return "symlink";
1107         } elsif (S_ISREG($mode)) {
1108                 if ($mode & S_IXUSR) {
1109                         return "executable";
1110                 } else {
1111                         return "file";
1112                 };
1113         } else {
1114                 return "unknown";
1115         }
1116 }
1117
1118
1119 ## ----------------------------------------------------------------------
1120 ## functions returning short HTML fragments, or transforming HTML fragments
1121 ## which don't belong to other sections
1122
1123 # format line of commit message.
1124 sub format_log_line_html {
1125         my $line = shift;
1126
1127         $line = esc_html($line, -nbsp=>1);
1128         if ($line =~ m/([0-9a-fA-F]{8,40})/) {
1129                 my $hash_text = $1;
1130                 my $link =
1131                         $cgi->a({-href => href(action=>"object", hash=>$hash_text),
1132                                 -class => "text"}, $hash_text);
1133                 $line =~ s/$hash_text/$link/;
1134         }
1135         return $line;
1136 }
1137
1138 # format marker of refs pointing to given object
1139
1140 # the destination action is chosen based on object type and current context:
1141 # - for annotated tags, we choose the tag view unless it's the current view
1142 #   already, in which case we go to shortlog view
1143 # - for other refs, we keep the current view if we're in history, shortlog or
1144 #   log view, and select shortlog otherwise
1145 sub format_ref_marker {
1146         my ($refs, $id) = @_;
1147         my $markers = '';
1148
1149         if (defined $refs->{$id}) {
1150                 foreach my $ref (@{$refs->{$id}}) {
1151                         # this code exploits the fact that non-lightweight tags are the
1152                         # only indirect objects, and that they are the only objects for which
1153                         # we want to use tag instead of shortlog as action
1154                         my ($type, $name) = qw();
1155                         my $indirect = ($ref =~ s/\^\{\}$//);
1156                         # e.g. tags/v2.6.11 or heads/next
1157                         if ($ref =~ m!^(.*?)s?/(.*)$!) {
1158                                 $type = $1;
1159                                 $name = $2;
1160                         } else {
1161                                 $type = "ref";
1162                                 $name = $ref;
1163                         }
1164
1165                         my $class = $type;
1166                         $class .= " indirect" if $indirect;
1167
1168                         my $dest_action = "shortlog";
1169
1170                         if ($indirect) {
1171                                 $dest_action = "tag" unless $action eq "tag";
1172                         } elsif ($action =~ /^(history|(short)?log)$/) {
1173                                 $dest_action = $action;
1174                         }
1175
1176                         my $dest = "";
1177                         $dest .= "refs/" unless $ref =~ m!^refs/!;
1178                         $dest .= $ref;
1179
1180                         my $link = $cgi->a({
1181                                 -href => href(
1182                                         action=>$dest_action,
1183                                         hash=>$dest
1184                                 )}, $name);
1185
1186                         $markers .= " <span class=\"$class\" title=\"$ref\">" .
1187                                 $link . "</span>";
1188                 }
1189         }
1190
1191         if ($markers) {
1192                 return ' <span class="refs">'. $markers . '</span>';
1193         } else {
1194                 return "";
1195         }
1196 }
1197
1198 # format, perhaps shortened and with markers, title line
1199 sub format_subject_html {
1200         my ($long, $short, $href, $extra) = @_;
1201         $extra = '' unless defined($extra);
1202
1203         if (length($short) < length($long)) {
1204                 return $cgi->a({-href => $href, -class => "list subject",
1205                                 -title => to_utf8($long)},
1206                        esc_html($short) . $extra);
1207         } else {
1208                 return $cgi->a({-href => $href, -class => "list subject"},
1209                        esc_html($long)  . $extra);
1210         }
1211 }
1212
1213 # format git diff header line, i.e. "diff --(git|combined|cc) ..."
1214 sub format_git_diff_header_line {
1215         my $line = shift;
1216         my $diffinfo = shift;
1217         my ($from, $to) = @_;
1218
1219         if ($diffinfo->{'nparents'}) {
1220                 # combined diff
1221                 $line =~ s!^(diff (.*?) )"?.*$!$1!;
1222                 if ($to->{'href'}) {
1223                         $line .= $cgi->a({-href => $to->{'href'}, -class => "path"},
1224                                          esc_path($to->{'file'}));
1225                 } else { # file was deleted (no href)
1226                         $line .= esc_path($to->{'file'});
1227                 }
1228         } else {
1229                 # "ordinary" diff
1230                 $line =~ s!^(diff (.*?) )"?a/.*$!$1!;
1231                 if ($from->{'href'}) {
1232                         $line .= $cgi->a({-href => $from->{'href'}, -class => "path"},
1233                                          'a/' . esc_path($from->{'file'}));
1234                 } else { # file was added (no href)
1235                         $line .= 'a/' . esc_path($from->{'file'});
1236                 }
1237                 $line .= ' ';
1238                 if ($to->{'href'}) {
1239                         $line .= $cgi->a({-href => $to->{'href'}, -class => "path"},
1240                                          'b/' . esc_path($to->{'file'}));
1241                 } else { # file was deleted
1242                         $line .= 'b/' . esc_path($to->{'file'});
1243                 }
1244         }
1245
1246         return "<div class=\"diff header\">$line</div>\n";
1247 }
1248
1249 # format extended diff header line, before patch itself
1250 sub format_extended_diff_header_line {
1251         my $line = shift;
1252         my $diffinfo = shift;
1253         my ($from, $to) = @_;
1254
1255         # match <path>
1256         if ($line =~ s!^((copy|rename) from ).*$!$1! && $from->{'href'}) {
1257                 $line .= $cgi->a({-href=>$from->{'href'}, -class=>"path"},
1258                                        esc_path($from->{'file'}));
1259         }
1260         if ($line =~ s!^((copy|rename) to ).*$!$1! && $to->{'href'}) {
1261                 $line .= $cgi->a({-href=>$to->{'href'}, -class=>"path"},
1262                                  esc_path($to->{'file'}));
1263         }
1264         # match single <mode>
1265         if ($line =~ m/\s(\d{6})$/) {
1266                 $line .= '<span class="info"> (' .
1267                          file_type_long($1) .
1268                          ')</span>';
1269         }
1270         # match <hash>
1271         if ($line =~ m/^index [0-9a-fA-F]{40},[0-9a-fA-F]{40}/) {
1272                 # can match only for combined diff
1273                 $line = 'index ';
1274                 for (my $i = 0; $i < $diffinfo->{'nparents'}; $i++) {
1275                         if ($from->{'href'}[$i]) {
1276                                 $line .= $cgi->a({-href=>$from->{'href'}[$i],
1277                                                   -class=>"hash"},
1278                                                  substr($diffinfo->{'from_id'}[$i],0,7));
1279                         } else {
1280                                 $line .= '0' x 7;
1281                         }
1282                         # separator
1283                         $line .= ',' if ($i < $diffinfo->{'nparents'} - 1);
1284                 }
1285                 $line .= '..';
1286                 if ($to->{'href'}) {
1287                         $line .= $cgi->a({-href=>$to->{'href'}, -class=>"hash"},
1288                                          substr($diffinfo->{'to_id'},0,7));
1289                 } else {
1290                         $line .= '0' x 7;
1291                 }
1292
1293         } elsif ($line =~ m/^index [0-9a-fA-F]{40}..[0-9a-fA-F]{40}/) {
1294                 # can match only for ordinary diff
1295                 my ($from_link, $to_link);
1296                 if ($from->{'href'}) {
1297                         $from_link = $cgi->a({-href=>$from->{'href'}, -class=>"hash"},
1298                                              substr($diffinfo->{'from_id'},0,7));
1299                 } else {
1300                         $from_link = '0' x 7;
1301                 }
1302                 if ($to->{'href'}) {
1303                         $to_link = $cgi->a({-href=>$to->{'href'}, -class=>"hash"},
1304                                            substr($diffinfo->{'to_id'},0,7));
1305                 } else {
1306                         $to_link = '0' x 7;
1307                 }
1308                 my ($from_id, $to_id) = ($diffinfo->{'from_id'}, $diffinfo->{'to_id'});
1309                 $line =~ s!$from_id\.\.$to_id!$from_link..$to_link!;
1310         }
1311
1312         return $line . "<br/>\n";
1313 }
1314
1315 # format from-file/to-file diff header
1316 sub format_diff_from_to_header {
1317         my ($from_line, $to_line, $diffinfo, $from, $to, @parents) = @_;
1318         my $line;
1319         my $result = '';
1320
1321         $line = $from_line;
1322         #assert($line =~ m/^---/) if DEBUG;
1323         # no extra formatting for "^--- /dev/null"
1324         if (! $diffinfo->{'nparents'}) {
1325                 # ordinary (single parent) diff
1326                 if ($line =~ m!^--- "?a/!) {
1327                         if ($from->{'href'}) {
1328                                 $line = '--- a/' .
1329                                         $cgi->a({-href=>$from->{'href'}, -class=>"path"},
1330                                                 esc_path($from->{'file'}));
1331                         } else {
1332                                 $line = '--- a/' .
1333                                         esc_path($from->{'file'});
1334                         }
1335                 }
1336                 $result .= qq!<div class="diff from_file">$line</div>\n!;
1337
1338         } else {
1339                 # combined diff (merge commit)
1340                 for (my $i = 0; $i < $diffinfo->{'nparents'}; $i++) {
1341                         if ($from->{'href'}[$i]) {
1342                                 $line = '--- ' .
1343                                         $cgi->a({-href=>href(action=>"blobdiff",
1344                                                              hash_parent=>$diffinfo->{'from_id'}[$i],
1345                                                              hash_parent_base=>$parents[$i],
1346                                                              file_parent=>$from->{'file'}[$i],
1347                                                              hash=>$diffinfo->{'to_id'},
1348                                                              hash_base=>$hash,
1349                                                              file_name=>$to->{'file'}),
1350                                                  -class=>"path",
1351                                                  -title=>"diff" . ($i+1)},
1352                                                 $i+1) .
1353                                         '/' .
1354                                         $cgi->a({-href=>$from->{'href'}[$i], -class=>"path"},
1355                                                 esc_path($from->{'file'}[$i]));
1356                         } else {
1357                                 $line = '--- /dev/null';
1358                         }
1359                         $result .= qq!<div class="diff from_file">$line</div>\n!;
1360                 }
1361         }
1362
1363         $line = $to_line;
1364         #assert($line =~ m/^\+\+\+/) if DEBUG;
1365         # no extra formatting for "^+++ /dev/null"
1366         if ($line =~ m!^\+\+\+ "?b/!) {
1367                 if ($to->{'href'}) {
1368                         $line = '+++ b/' .
1369                                 $cgi->a({-href=>$to->{'href'}, -class=>"path"},
1370                                         esc_path($to->{'file'}));
1371                 } else {
1372                         $line = '+++ b/' .
1373                                 esc_path($to->{'file'});
1374                 }
1375         }
1376         $result .= qq!<div class="diff to_file">$line</div>\n!;
1377
1378         return $result;
1379 }
1380
1381 # create note for patch simplified by combined diff
1382 sub format_diff_cc_simplified {
1383         my ($diffinfo, @parents) = @_;
1384         my $result = '';
1385
1386         $result .= "<div class=\"diff header\">" .
1387                    "diff --cc ";
1388         if (!is_deleted($diffinfo)) {
1389                 $result .= $cgi->a({-href => href(action=>"blob",
1390                                                   hash_base=>$hash,
1391                                                   hash=>$diffinfo->{'to_id'},
1392                                                   file_name=>$diffinfo->{'to_file'}),
1393                                     -class => "path"},
1394                                    esc_path($diffinfo->{'to_file'}));
1395         } else {
1396                 $result .= esc_path($diffinfo->{'to_file'});
1397         }
1398         $result .= "</div>\n" . # class="diff header"
1399                    "<div class=\"diff nodifferences\">" .
1400                    "Simple merge" .
1401                    "</div>\n"; # class="diff nodifferences"
1402
1403         return $result;
1404 }
1405
1406 # format patch (diff) line (not to be used for diff headers)
1407 sub format_diff_line {
1408         my $line = shift;
1409         my ($from, $to) = @_;
1410         my $diff_class = "";
1411
1412         chomp $line;
1413
1414         if ($from && $to && ref($from->{'href'}) eq "ARRAY") {
1415                 # combined diff
1416                 my $prefix = substr($line, 0, scalar @{$from->{'href'}});
1417                 if ($line =~ m/^\@{3}/) {
1418                         $diff_class = " chunk_header";
1419                 } elsif ($line =~ m/^\\/) {
1420                         $diff_class = " incomplete";
1421                 } elsif ($prefix =~ tr/+/+/) {
1422                         $diff_class = " add";
1423                 } elsif ($prefix =~ tr/-/-/) {
1424                         $diff_class = " rem";
1425                 }
1426         } else {
1427                 # assume ordinary diff
1428                 my $char = substr($line, 0, 1);
1429                 if ($char eq '+') {
1430                         $diff_class = " add";
1431                 } elsif ($char eq '-') {
1432                         $diff_class = " rem";
1433                 } elsif ($char eq '@') {
1434                         $diff_class = " chunk_header";
1435                 } elsif ($char eq "\\") {
1436                         $diff_class = " incomplete";
1437                 }
1438         }
1439         $line = untabify($line);
1440         if ($from && $to && $line =~ m/^\@{2} /) {
1441                 my ($from_text, $from_start, $from_lines, $to_text, $to_start, $to_lines, $section) =
1442                         $line =~ m/^\@{2} (-(\d+)(?:,(\d+))?) (\+(\d+)(?:,(\d+))?) \@{2}(.*)$/;
1443
1444                 $from_lines = 0 unless defined $from_lines;
1445                 $to_lines   = 0 unless defined $to_lines;
1446
1447                 if ($from->{'href'}) {
1448                         $from_text = $cgi->a({-href=>"$from->{'href'}#l$from_start",
1449                                              -class=>"list"}, $from_text);
1450                 }
1451                 if ($to->{'href'}) {
1452                         $to_text   = $cgi->a({-href=>"$to->{'href'}#l$to_start",
1453                                              -class=>"list"}, $to_text);
1454                 }
1455                 $line = "<span class=\"chunk_info\">@@ $from_text $to_text @@</span>" .
1456                         "<span class=\"section\">" . esc_html($section, -nbsp=>1) . "</span>";
1457                 return "<div class=\"diff$diff_class\">$line</div>\n";
1458         } elsif ($from && $to && $line =~ m/^\@{3}/) {
1459                 my ($prefix, $ranges, $section) = $line =~ m/^(\@+) (.*?) \@+(.*)$/;
1460                 my (@from_text, @from_start, @from_nlines, $to_text, $to_start, $to_nlines);
1461
1462                 @from_text = split(' ', $ranges);
1463                 for (my $i = 0; $i < @from_text; ++$i) {
1464                         ($from_start[$i], $from_nlines[$i]) =
1465                                 (split(',', substr($from_text[$i], 1)), 0);
1466                 }
1467
1468                 $to_text   = pop @from_text;
1469                 $to_start  = pop @from_start;
1470                 $to_nlines = pop @from_nlines;
1471
1472                 $line = "<span class=\"chunk_info\">$prefix ";
1473                 for (my $i = 0; $i < @from_text; ++$i) {
1474                         if ($from->{'href'}[$i]) {
1475                                 $line .= $cgi->a({-href=>"$from->{'href'}[$i]#l$from_start[$i]",
1476                                                   -class=>"list"}, $from_text[$i]);
1477                         } else {
1478                                 $line .= $from_text[$i];
1479                         }
1480                         $line .= " ";
1481                 }
1482                 if ($to->{'href'}) {
1483                         $line .= $cgi->a({-href=>"$to->{'href'}#l$to_start",
1484                                           -class=>"list"}, $to_text);
1485                 } else {
1486                         $line .= $to_text;
1487                 }
1488                 $line .= " $prefix</span>" .
1489                          "<span class=\"section\">" . esc_html($section, -nbsp=>1) . "</span>";
1490                 return "<div class=\"diff$diff_class\">$line</div>\n";
1491         }
1492         return "<div class=\"diff$diff_class\">" . esc_html($line, -nbsp=>1) . "</div>\n";
1493 }
1494
1495 # Generates undef or something like "_snapshot_" or "snapshot (_tbz2_ _zip_)",
1496 # linked.  Pass the hash of the tree/commit to snapshot.
1497 sub format_snapshot_links {
1498         my ($hash) = @_;
1499         my @snapshot_fmts = gitweb_check_feature('snapshot');
1500         @snapshot_fmts = filter_snapshot_fmts(@snapshot_fmts);
1501         my $num_fmts = @snapshot_fmts;
1502         if ($num_fmts > 1) {
1503                 # A parenthesized list of links bearing format names.
1504                 # e.g. "snapshot (_tar.gz_ _zip_)"
1505                 return "snapshot (" . join(' ', map
1506                         $cgi->a({
1507                                 -href => href(
1508                                         action=>"snapshot",
1509                                         hash=>$hash,
1510                                         snapshot_format=>$_
1511                                 )
1512                         }, $known_snapshot_formats{$_}{'display'})
1513                 , @snapshot_fmts) . ")";
1514         } elsif ($num_fmts == 1) {
1515                 # A single "snapshot" link whose tooltip bears the format name.
1516                 # i.e. "_snapshot_"
1517                 my ($fmt) = @snapshot_fmts;
1518                 return
1519                         $cgi->a({
1520                                 -href => href(
1521                                         action=>"snapshot",
1522                                         hash=>$hash,
1523                                         snapshot_format=>$fmt
1524                                 ),
1525                                 -title => "in format: $known_snapshot_formats{$fmt}{'display'}"
1526                         }, "snapshot");
1527         } else { # $num_fmts == 0
1528                 return undef;
1529         }
1530 }
1531
1532 ## ......................................................................
1533 ## functions returning values to be passed, perhaps after some
1534 ## transformation, to other functions; e.g. returning arguments to href()
1535
1536 # returns hash to be passed to href to generate gitweb URL
1537 # in -title key it returns description of link
1538 sub get_feed_info {
1539         my $format = shift || 'Atom';
1540         my %res = (action => lc($format));
1541
1542         # feed links are possible only for project views
1543         return unless (defined $project);
1544         # some views should link to OPML, or to generic project feed,
1545         # or don't have specific feed yet (so they should use generic)
1546         return if ($action =~ /^(?:tags|heads|forks|tag|search)$/x);
1547
1548         my $branch;
1549         # branches refs uses 'refs/heads/' prefix (fullname) to differentiate
1550         # from tag links; this also makes possible to detect branch links
1551         if ((defined $hash_base && $hash_base =~ m!^refs/heads/(.*)$!) ||
1552             (defined $hash      && $hash      =~ m!^refs/heads/(.*)$!)) {
1553                 $branch = $1;
1554         }
1555         # find log type for feed description (title)
1556         my $type = 'log';
1557         if (defined $file_name) {
1558                 $type  = "history of $file_name";
1559                 $type .= "/" if ($action eq 'tree');
1560                 $type .= " on '$branch'" if (defined $branch);
1561         } else {
1562                 $type = "log of $branch" if (defined $branch);
1563         }
1564
1565         $res{-title} = $type;
1566         $res{'hash'} = (defined $branch ? "refs/heads/$branch" : undef);
1567         $res{'file_name'} = $file_name;
1568
1569         return %res;
1570 }
1571
1572 ## ----------------------------------------------------------------------
1573 ## git utility subroutines, invoking git commands
1574
1575 # returns path to the core git executable and the --git-dir parameter as list
1576 sub git_cmd {
1577         return $GIT, '--git-dir='.$git_dir;
1578 }
1579
1580 # quote the given arguments for passing them to the shell
1581 # quote_command("command", "arg 1", "arg with ' and ! characters")
1582 # => "'command' 'arg 1' 'arg with '\'' and '\!' characters'"
1583 # Try to avoid using this function wherever possible.
1584 sub quote_command {
1585         return join(' ',
1586                     map( { my $a = $_; $a =~ s/(['!])/'\\$1'/g; "'$a'" } @_ ));
1587 }
1588
1589 # get HEAD ref of given project as hash
1590 sub git_get_head_hash {
1591         my $project = shift;
1592         my $o_git_dir = $git_dir;
1593         my $retval = undef;
1594         $git_dir = "$projectroot/$project";
1595         if (open my $fd, "-|", git_cmd(), "rev-parse", "--verify", "HEAD") {
1596                 my $head = <$fd>;
1597                 close $fd;
1598                 if (defined $head && $head =~ /^([0-9a-fA-F]{40})$/) {
1599                         $retval = $1;
1600                 }
1601         }
1602         if (defined $o_git_dir) {
1603                 $git_dir = $o_git_dir;
1604         }
1605         return $retval;
1606 }
1607
1608 # get type of given object
1609 sub git_get_type {
1610         my $hash = shift;
1611
1612         open my $fd, "-|", git_cmd(), "cat-file", '-t', $hash or return;
1613         my $type = <$fd>;
1614         close $fd or return;
1615         chomp $type;
1616         return $type;
1617 }
1618
1619 # repository configuration
1620 our $config_file = '';
1621 our %config;
1622
1623 # store multiple values for single key as anonymous array reference
1624 # single values stored directly in the hash, not as [ <value> ]
1625 sub hash_set_multi {
1626         my ($hash, $key, $value) = @_;
1627
1628         if (!exists $hash->{$key}) {
1629                 $hash->{$key} = $value;
1630         } elsif (!ref $hash->{$key}) {
1631                 $hash->{$key} = [ $hash->{$key}, $value ];
1632         } else {
1633                 push @{$hash->{$key}}, $value;
1634         }
1635 }
1636
1637 # return hash of git project configuration
1638 # optionally limited to some section, e.g. 'gitweb'
1639 sub git_parse_project_config {
1640         my $section_regexp = shift;
1641         my %config;
1642
1643         local $/ = "\0";
1644
1645         open my $fh, "-|", git_cmd(), "config", '-z', '-l',
1646                 or return;
1647
1648         while (my $keyval = <$fh>) {
1649                 chomp $keyval;
1650                 my ($key, $value) = split(/\n/, $keyval, 2);
1651
1652                 hash_set_multi(\%config, $key, $value)
1653                         if (!defined $section_regexp || $key =~ /^(?:$section_regexp)\./o);
1654         }
1655         close $fh;
1656
1657         return %config;
1658 }
1659
1660 # convert config value to boolean, 'true' or 'false'
1661 # no value, number > 0, 'true' and 'yes' values are true
1662 # rest of values are treated as false (never as error)
1663 sub config_to_bool {
1664         my $val = shift;
1665
1666         # strip leading and trailing whitespace
1667         $val =~ s/^\s+//;
1668         $val =~ s/\s+$//;
1669
1670         return (!defined $val ||               # section.key
1671                 ($val =~ /^\d+$/ && $val) ||   # section.key = 1
1672                 ($val =~ /^(?:true|yes)$/i));  # section.key = true
1673 }
1674
1675 # convert config value to simple decimal number
1676 # an optional value suffix of 'k', 'm', or 'g' will cause the value
1677 # to be multiplied by 1024, 1048576, or 1073741824
1678 sub config_to_int {
1679         my $val = shift;
1680
1681         # strip leading and trailing whitespace
1682         $val =~ s/^\s+//;
1683         $val =~ s/\s+$//;
1684
1685         if (my ($num, $unit) = ($val =~ /^([0-9]*)([kmg])$/i)) {
1686                 $unit = lc($unit);
1687                 # unknown unit is treated as 1
1688                 return $num * ($unit eq 'g' ? 1073741824 :
1689                                $unit eq 'm' ?    1048576 :
1690                                $unit eq 'k' ?       1024 : 1);
1691         }
1692         return $val;
1693 }
1694
1695 # convert config value to array reference, if needed
1696 sub config_to_multi {
1697         my $val = shift;
1698
1699         return ref($val) ? $val : (defined($val) ? [ $val ] : []);
1700 }
1701
1702 sub git_get_project_config {
1703         my ($key, $type) = @_;
1704
1705         # key sanity check
1706         return unless ($key);
1707         $key =~ s/^gitweb\.//;
1708         return if ($key =~ m/\W/);
1709
1710         # type sanity check
1711         if (defined $type) {
1712                 $type =~ s/^--//;
1713                 $type = undef
1714                         unless ($type eq 'bool' || $type eq 'int');
1715         }
1716
1717         # get config
1718         if (!defined $config_file ||
1719             $config_file ne "$git_dir/config") {
1720                 %config = git_parse_project_config('gitweb');
1721                 $config_file = "$git_dir/config";
1722         }
1723
1724         # ensure given type
1725         if (!defined $type) {
1726                 return $config{"gitweb.$key"};
1727         } elsif ($type eq 'bool') {
1728                 # backward compatibility: 'git config --bool' returns true/false
1729                 return config_to_bool($config{"gitweb.$key"}) ? 'true' : 'false';
1730         } elsif ($type eq 'int') {
1731                 return config_to_int($config{"gitweb.$key"});
1732         }
1733         return $config{"gitweb.$key"};
1734 }
1735
1736 # get hash of given path at given ref
1737 sub git_get_hash_by_path {
1738         my $base = shift;
1739         my $path = shift || return undef;
1740         my $type = shift;
1741
1742         $path =~ s,/+$,,;
1743
1744         open my $fd, "-|", git_cmd(), "ls-tree", $base, "--", $path
1745                 or die_error(500, "Open git-ls-tree failed");
1746         my $line = <$fd>;
1747         close $fd or return undef;
1748
1749         if (!defined $line) {
1750                 # there is no tree or hash given by $path at $base
1751                 return undef;
1752         }
1753
1754         #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
1755         $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t/;
1756         if (defined $type && $type ne $2) {
1757                 # type doesn't match
1758                 return undef;
1759         }
1760         return $3;
1761 }
1762
1763 # get path of entry with given hash at given tree-ish (ref)
1764 # used to get 'from' filename for combined diff (merge commit) for renames
1765 sub git_get_path_by_hash {
1766         my $base = shift || return;
1767         my $hash = shift || return;
1768
1769         local $/ = "\0";
1770
1771         open my $fd, "-|", git_cmd(), "ls-tree", '-r', '-t', '-z', $base
1772                 or return undef;
1773         while (my $line = <$fd>) {
1774                 chomp $line;
1775
1776                 #'040000 tree 595596a6a9117ddba9fe379b6b012b558bac8423  gitweb'
1777                 #'100644 blob e02e90f0429be0d2a69b76571101f20b8f75530f  gitweb/README'
1778                 if ($line =~ m/(?:[0-9]+) (?:.+) $hash\t(.+)$/) {
1779                         close $fd;
1780                         return $1;
1781                 }
1782         }
1783         close $fd;
1784         return undef;
1785 }
1786
1787 ## ......................................................................
1788 ## git utility functions, directly accessing git repository
1789
1790 sub git_get_project_description {
1791         my $path = shift;
1792
1793         $git_dir = "$projectroot/$path";
1794         open my $fd, "$git_dir/description"
1795                 or return git_get_project_config('description');
1796         my $descr = <$fd>;
1797         close $fd;
1798         if (defined $descr) {
1799                 chomp $descr;
1800         }
1801         return $descr;
1802 }
1803
1804 sub git_get_project_ctags {
1805         my $path = shift;
1806         my $ctags = {};
1807
1808         $git_dir = "$projectroot/$path";
1809         foreach (<$git_dir/ctags/*>) {
1810                 open CT, $_ or next;
1811                 my $val = <CT>;
1812                 chomp $val;
1813                 close CT;
1814                 my $ctag = $_; $ctag =~ s#.*/##;
1815                 $ctags->{$ctag} = $val;
1816         }
1817         $ctags;
1818 }
1819
1820 sub git_populate_project_tagcloud {
1821         my $ctags = shift;
1822
1823         # First, merge different-cased tags; tags vote on casing
1824         my %ctags_lc;
1825         foreach (keys %$ctags) {
1826                 $ctags_lc{lc $_}->{count} += $ctags->{$_};
1827                 if (not $ctags_lc{lc $_}->{topcount}
1828                     or $ctags_lc{lc $_}->{topcount} < $ctags->{$_}) {
1829                         $ctags_lc{lc $_}->{topcount} = $ctags->{$_};
1830                         $ctags_lc{lc $_}->{topname} = $_;
1831                 }
1832         }
1833
1834         my $cloud;
1835         if (eval { require HTML::TagCloud; 1; }) {
1836                 $cloud = HTML::TagCloud->new;
1837                 foreach (sort keys %ctags_lc) {
1838                         # Pad the title with spaces so that the cloud looks
1839                         # less crammed.
1840                         my $title = $ctags_lc{$_}->{topname};
1841                         $title =~ s/ /&nbsp;/g;
1842                         $title =~ s/^/&nbsp;/g;
1843                         $title =~ s/$/&nbsp;/g;
1844                         $cloud->add($title, $home_link."?by_tag=".$_, $ctags_lc{$_}->{count});
1845                 }
1846         } else {
1847                 $cloud = \%ctags_lc;
1848         }
1849         $cloud;
1850 }
1851
1852 sub git_show_project_tagcloud {
1853         my ($cloud, $count) = @_;
1854         print STDERR ref($cloud)."..\n";
1855         if (ref $cloud eq 'HTML::TagCloud') {
1856                 return $cloud->html_and_css($count);
1857         } else {
1858                 my @tags = sort { $cloud->{$a}->{count} <=> $cloud->{$b}->{count} } keys %$cloud;
1859                 return '<p align="center">' . join (', ', map {
1860                         "<a href=\"$home_link?by_tag=$_\">$cloud->{$_}->{topname}</a>"
1861                 } splice(@tags, 0, $count)) . '</p>';
1862         }
1863 }
1864
1865 sub git_get_project_url_list {
1866         my $path = shift;
1867
1868         $git_dir = "$projectroot/$path";
1869         open my $fd, "$git_dir/cloneurl"
1870                 or return wantarray ?
1871                 @{ config_to_multi(git_get_project_config('url')) } :
1872                    config_to_multi(git_get_project_config('url'));
1873         my @git_project_url_list = map { chomp; $_ } <$fd>;
1874         close $fd;
1875
1876         return wantarray ? @git_project_url_list : \@git_project_url_list;
1877 }
1878
1879 sub git_get_projects_list {
1880         my ($filter) = @_;
1881         my @list;
1882
1883         $filter ||= '';
1884         $filter =~ s/\.git$//;
1885
1886         my ($check_forks) = gitweb_check_feature('forks');
1887
1888         if (-d $projects_list) {
1889                 # search in directory
1890                 my $dir = $projects_list . ($filter ? "/$filter" : '');
1891                 # remove the trailing "/"
1892                 $dir =~ s!/+$!!;
1893                 my $pfxlen = length("$dir");
1894                 my $pfxdepth = ($dir =~ tr!/!!);
1895
1896                 File::Find::find({
1897                         follow_fast => 1, # follow symbolic links
1898                         follow_skip => 2, # ignore duplicates
1899                         dangling_symlinks => 0, # ignore dangling symlinks, silently
1900                         wanted => sub {
1901                                 # skip project-list toplevel, if we get it.
1902                                 return if (m!^[/.]$!);
1903                                 # only directories can be git repositories
1904                                 return unless (-d $_);
1905                                 # don't traverse too deep (Find is super slow on os x)
1906                                 if (($File::Find::name =~ tr!/!!) - $pfxdepth > $project_maxdepth) {
1907                                         $File::Find::prune = 1;
1908                                         return;
1909                                 }
1910
1911                                 my $subdir = substr($File::Find::name, $pfxlen + 1);
1912                                 # we check related file in $projectroot
1913                                 if (check_export_ok("$projectroot/$filter/$subdir")) {
1914                                         push @list, { path => ($filter ? "$filter/" : '') . $subdir };
1915                                         $File::Find::prune = 1;
1916                                 }
1917                         },
1918                 }, "$dir");
1919
1920         } elsif (-f $projects_list) {
1921                 # read from file(url-encoded):
1922                 # 'git%2Fgit.git Linus+Torvalds'
1923                 # 'libs%2Fklibc%2Fklibc.git H.+Peter+Anvin'
1924                 # 'linux%2Fhotplug%2Fudev.git Greg+Kroah-Hartman'
1925                 my %paths;
1926                 open my ($fd), $projects_list or return;
1927         PROJECT:
1928                 while (my $line = <$fd>) {
1929                         chomp $line;
1930                         my ($path, $owner) = split ' ', $line;
1931                         $path = unescape($path);
1932                         $owner = unescape($owner);
1933                         if (!defined $path) {
1934                                 next;
1935                         }
1936                         if ($filter ne '') {
1937                                 # looking for forks;
1938                                 my $pfx = substr($path, 0, length($filter));
1939                                 if ($pfx ne $filter) {
1940                                         next PROJECT;
1941                                 }
1942                                 my $sfx = substr($path, length($filter));
1943                                 if ($sfx !~ /^\/.*\.git$/) {
1944                                         next PROJECT;
1945                                 }
1946                         } elsif ($check_forks) {
1947                         PATH:
1948                                 foreach my $filter (keys %paths) {
1949                                         # looking for forks;
1950                                         my $pfx = substr($path, 0, length($filter));
1951                                         if ($pfx ne $filter) {
1952                                                 next PATH;
1953                                         }
1954                                         my $sfx = substr($path, length($filter));
1955                                         if ($sfx !~ /^\/.*\.git$/) {
1956                                                 next PATH;
1957                                         }
1958                                         # is a fork, don't include it in
1959                                         # the list
1960                                         next PROJECT;
1961                                 }
1962                         }
1963                         if (check_export_ok("$projectroot/$path")) {
1964                                 my $pr = {
1965                                         path => $path,
1966                                         owner => to_utf8($owner),
1967                                 };
1968                                 push @list, $pr;
1969                                 (my $forks_path = $path) =~ s/\.git$//;
1970                                 $paths{$forks_path}++;
1971                         }
1972                 }
1973                 close $fd;
1974         }
1975         return @list;
1976 }
1977
1978 our $gitweb_project_owner = undef;
1979 sub git_get_project_list_from_file {
1980
1981         return if (defined $gitweb_project_owner);
1982
1983         $gitweb_project_owner = {};
1984         # read from file (url-encoded):
1985         # 'git%2Fgit.git Linus+Torvalds'
1986         # 'libs%2Fklibc%2Fklibc.git H.+Peter+Anvin'
1987         # 'linux%2Fhotplug%2Fudev.git Greg+Kroah-Hartman'
1988         if (-f $projects_list) {
1989                 open (my $fd , $projects_list);
1990                 while (my $line = <$fd>) {
1991                         chomp $line;
1992                         my ($pr, $ow) = split ' ', $line;
1993                         $pr = unescape($pr);
1994                         $ow = unescape($ow);
1995                         $gitweb_project_owner->{$pr} = to_utf8($ow);
1996                 }
1997                 close $fd;
1998         }
1999 }
2000
2001 sub git_get_project_owner {
2002         my $project = shift;
2003         my $owner;
2004
2005         return undef unless $project;
2006         $git_dir = "$projectroot/$project";
2007
2008         if (!defined $gitweb_project_owner) {
2009                 git_get_project_list_from_file();
2010         }
2011
2012         if (exists $gitweb_project_owner->{$project}) {
2013                 $owner = $gitweb_project_owner->{$project};
2014         }
2015         if (!defined $owner){
2016                 $owner = git_get_project_config('owner');
2017         }
2018         if (!defined $owner) {
2019                 $owner = get_file_owner("$git_dir");
2020         }
2021
2022         return $owner;
2023 }
2024
2025 sub git_get_last_activity {
2026         my ($path) = @_;
2027         my $fd;
2028
2029         $git_dir = "$projectroot/$path";
2030         open($fd, "-|", git_cmd(), 'for-each-ref',
2031              '--format=%(committer)',
2032              '--sort=-committerdate',
2033              '--count=1',
2034              'refs/heads') or return;
2035         my $most_recent = <$fd>;
2036         close $fd or return;
2037         if (defined $most_recent &&
2038             $most_recent =~ / (\d+) [-+][01]\d\d\d$/) {
2039                 my $timestamp = $1;
2040                 my $age = time - $timestamp;
2041                 return ($age, age_string($age));
2042         }
2043         return (undef, undef);
2044 }
2045
2046 sub git_get_references {
2047         my $type = shift || "";
2048         my %refs;
2049         # 5dc01c595e6c6ec9ccda4f6f69c131c0dd945f8c refs/tags/v2.6.11
2050         # c39ae07f393806ccf406ef966e9a15afc43cc36a refs/tags/v2.6.11^{}
2051         open my $fd, "-|", git_cmd(), "show-ref", "--dereference",
2052                 ($type ? ("--", "refs/$type") : ()) # use -- <pattern> if $type
2053                 or return;
2054
2055         while (my $line = <$fd>) {
2056                 chomp $line;
2057                 if ($line =~ m!^([0-9a-fA-F]{40})\srefs/($type.*)$!) {
2058                         if (defined $refs{$1}) {
2059                                 push @{$refs{$1}}, $2;
2060                         } else {
2061                                 $refs{$1} = [ $2 ];
2062                         }
2063                 }
2064         }
2065         close $fd or return;
2066         return \%refs;
2067 }
2068
2069 sub git_get_rev_name_tags {
2070         my $hash = shift || return undef;
2071
2072         open my $fd, "-|", git_cmd(), "name-rev", "--tags", $hash
2073                 or return;
2074         my $name_rev = <$fd>;
2075         close $fd;
2076
2077         if ($name_rev =~ m|^$hash tags/(.*)$|) {
2078                 return $1;
2079         } else {
2080                 # catches also '$hash undefined' output
2081                 return undef;
2082         }
2083 }
2084
2085 ## ----------------------------------------------------------------------
2086 ## parse to hash functions
2087
2088 sub parse_date {
2089         my $epoch = shift;
2090         my $tz = shift || "-0000";
2091
2092         my %date;
2093         my @months = ("Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec");
2094         my @days = ("Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat");
2095         my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($epoch);
2096         $date{'hour'} = $hour;
2097         $date{'minute'} = $min;
2098         $date{'mday'} = $mday;
2099         $date{'day'} = $days[$wday];
2100         $date{'month'} = $months[$mon];
2101         $date{'rfc2822'}   = sprintf "%s, %d %s %4d %02d:%02d:%02d +0000",
2102                              $days[$wday], $mday, $months[$mon], 1900+$year, $hour ,$min, $sec;
2103         $date{'mday-time'} = sprintf "%d %s %02d:%02d",
2104                              $mday, $months[$mon], $hour ,$min;
2105         $date{'iso-8601'}  = sprintf "%04d-%02d-%02dT%02d:%02d:%02dZ",
2106                              1900+$year, 1+$mon, $mday, $hour ,$min, $sec;
2107
2108         $tz =~ m/^([+\-][0-9][0-9])([0-9][0-9])$/;
2109         my $local = $epoch + ((int $1 + ($2/60)) * 3600);
2110         ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($local);
2111         $date{'hour_local'} = $hour;
2112         $date{'minute_local'} = $min;
2113         $date{'tz_local'} = $tz;
2114         $date{'iso-tz'} = sprintf("%04d-%02d-%02d %02d:%02d:%02d %s",
2115                                   1900+$year, $mon+1, $mday,
2116                                   $hour, $min, $sec, $tz);
2117         return %date;
2118 }
2119
2120 sub parse_tag {
2121         my $tag_id = shift;
2122         my %tag;
2123         my @comment;
2124
2125         open my $fd, "-|", git_cmd(), "cat-file", "tag", $tag_id or return;
2126         $tag{'id'} = $tag_id;
2127         while (my $line = <$fd>) {
2128                 chomp $line;
2129                 if ($line =~ m/^object ([0-9a-fA-F]{40})$/) {
2130                         $tag{'object'} = $1;
2131                 } elsif ($line =~ m/^type (.+)$/) {
2132                         $tag{'type'} = $1;
2133                 } elsif ($line =~ m/^tag (.+)$/) {
2134                         $tag{'name'} = $1;
2135                 } elsif ($line =~ m/^tagger (.*) ([0-9]+) (.*)$/) {
2136                         $tag{'author'} = $1;
2137                         $tag{'epoch'} = $2;
2138                         $tag{'tz'} = $3;
2139                 } elsif ($line =~ m/--BEGIN/) {
2140                         push @comment, $line;
2141                         last;
2142                 } elsif ($line eq "") {
2143                         last;
2144                 }
2145         }
2146         push @comment, <$fd>;
2147         $tag{'comment'} = \@comment;
2148         close $fd or return;
2149         if (!defined $tag{'name'}) {
2150                 return
2151         };
2152         return %tag
2153 }
2154
2155 sub parse_commit_text {
2156         my ($commit_text, $withparents) = @_;
2157         my @commit_lines = split '\n', $commit_text;
2158         my %co;
2159
2160         pop @commit_lines; # Remove '\0'
2161
2162         if (! @commit_lines) {
2163                 return;
2164         }
2165
2166         my $header = shift @commit_lines;
2167         if ($header !~ m/^[0-9a-fA-F]{40}/) {
2168                 return;
2169         }
2170         ($co{'id'}, my @parents) = split ' ', $header;
2171         while (my $line = shift @commit_lines) {
2172                 last if $line eq "\n";
2173                 if ($line =~ m/^tree ([0-9a-fA-F]{40})$/) {
2174                         $co{'tree'} = $1;
2175                 } elsif ((!defined $withparents) && ($line =~ m/^parent ([0-9a-fA-F]{40})$/)) {
2176                         push @parents, $1;
2177                 } elsif ($line =~ m/^author (.*) ([0-9]+) (.*)$/) {
2178                         $co{'author'} = $1;
2179                         $co{'author_epoch'} = $2;
2180                         $co{'author_tz'} = $3;
2181                         if ($co{'author'} =~ m/^([^<]+) <([^>]*)>/) {
2182                                 $co{'author_name'}  = $1;
2183                                 $co{'author_email'} = $2;
2184                         } else {
2185                                 $co{'author_name'} = $co{'author'};
2186                         }
2187                 } elsif ($line =~ m/^committer (.*) ([0-9]+) (.*)$/) {
2188                         $co{'committer'} = $1;
2189                         $co{'committer_epoch'} = $2;
2190                         $co{'committer_tz'} = $3;
2191                         $co{'committer_name'} = $co{'committer'};
2192                         if ($co{'committer'} =~ m/^([^<]+) <([^>]*)>/) {
2193                                 $co{'committer_name'}  = $1;
2194                                 $co{'committer_email'} = $2;
2195                         } else {
2196                                 $co{'committer_name'} = $co{'committer'};
2197                         }
2198                 }
2199         }
2200         if (!defined $co{'tree'}) {
2201                 return;
2202         };
2203         $co{'parents'} = \@parents;
2204         $co{'parent'} = $parents[0];
2205
2206         foreach my $title (@commit_lines) {
2207                 $title =~ s/^    //;
2208                 if ($title ne "") {
2209                         $co{'title'} = chop_str($title, 80, 5);
2210                         # remove leading stuff of merges to make the interesting part visible
2211                         if (length($title) > 50) {
2212                                 $title =~ s/^Automatic //;
2213                                 $title =~ s/^merge (of|with) /Merge ... /i;
2214                                 if (length($title) > 50) {
2215                                         $title =~ s/(http|rsync):\/\///;
2216                                 }
2217                                 if (length($title) > 50) {
2218                                         $title =~ s/(master|www|rsync)\.//;
2219                                 }
2220                                 if (length($title) > 50) {
2221                                         $title =~ s/kernel.org:?//;
2222                                 }
2223                                 if (length($title) > 50) {
2224                                         $title =~ s/\/pub\/scm//;
2225                                 }
2226                         }
2227                         $co{'title_short'} = chop_str($title, 50, 5);
2228                         last;
2229                 }
2230         }
2231         if (! defined $co{'title'} || $co{'title'} eq "") {
2232                 $co{'title'} = $co{'title_short'} = '(no commit message)';
2233         }
2234         # remove added spaces
2235         foreach my $line (@commit_lines) {
2236                 $line =~ s/^    //;
2237         }
2238         $co{'comment'} = \@commit_lines;
2239
2240         my $age = time - $co{'committer_epoch'};
2241         $co{'age'} = $age;
2242         $co{'age_string'} = age_string($age);
2243         my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($co{'committer_epoch'});
2244         if ($age > 60*60*24*7*2) {
2245                 $co{'age_string_date'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
2246                 $co{'age_string_age'} = $co{'age_string'};
2247         } else {
2248                 $co{'age_string_date'} = $co{'age_string'};
2249                 $co{'age_string_age'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
2250         }
2251         return %co;
2252 }
2253
2254 sub parse_commit {
2255         my ($commit_id) = @_;
2256         my %co;
2257
2258         local $/ = "\0";
2259
2260         open my $fd, "-|", git_cmd(), "rev-list",
2261                 "--parents",
2262                 "--header",
2263                 "--max-count=1",
2264                 $commit_id,
2265                 "--",
2266                 or die_error(500, "Open git-rev-list failed");
2267         %co = parse_commit_text(<$fd>, 1);
2268         close $fd;
2269
2270         return %co;
2271 }
2272
2273 sub parse_commits {
2274         my ($commit_id, $maxcount, $skip, $filename, @args) = @_;
2275         my @cos;
2276
2277         $maxcount ||= 1;
2278         $skip ||= 0;
2279
2280         local $/ = "\0";
2281
2282         open my $fd, "-|", git_cmd(), "rev-list",
2283                 "--header",
2284                 @args,
2285                 ("--max-count=" . $maxcount),
2286                 ("--skip=" . $skip),
2287                 @extra_options,
2288                 $commit_id,
2289                 "--",
2290                 ($filename ? ($filename) : ())
2291                 or die_error(500, "Open git-rev-list failed");
2292         while (my $line = <$fd>) {
2293                 my %co = parse_commit_text($line);
2294                 push @cos, \%co;
2295         }
2296         close $fd;
2297
2298         return wantarray ? @cos : \@cos;
2299 }
2300
2301 # parse line of git-diff-tree "raw" output
2302 sub parse_difftree_raw_line {
2303         my $line = shift;
2304         my %res;
2305
2306         # ':100644 100644 03b218260e99b78c6df0ed378e59ed9205ccc96d 3b93d5e7cc7f7dd4ebed13a5cc1a4ad976fc94d8 M   ls-files.c'
2307         # ':100644 100644 7f9281985086971d3877aca27704f2aaf9c448ce bc190ebc71bbd923f2b728e505408f5e54bd073a M   rev-tree.c'
2308         if ($line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)([0-9]{0,3})\t(.*)$/) {
2309                 $res{'from_mode'} = $1;
2310                 $res{'to_mode'} = $2;
2311                 $res{'from_id'} = $3;
2312                 $res{'to_id'} = $4;
2313                 $res{'status'} = $5;
2314                 $res{'similarity'} = $6;
2315                 if ($res{'status'} eq 'R' || $res{'status'} eq 'C') { # renamed or copied
2316                         ($res{'from_file'}, $res{'to_file'}) = map { unquote($_) } split("\t", $7);
2317                 } else {
2318                         $res{'from_file'} = $res{'to_file'} = $res{'file'} = unquote($7);
2319                 }
2320         }
2321         # '::100755 100755 100755 60e79ca1b01bc8b057abe17ddab484699a7f5fdb 94067cc5f73388f33722d52ae02f44692bc07490 94067cc5f73388f33722d52ae02f44692bc07490 MR git-gui/git-gui.sh'
2322         # combined diff (for merge commit)
2323         elsif ($line =~ s/^(::+)((?:[0-7]{6} )+)((?:[0-9a-fA-F]{40} )+)([a-zA-Z]+)\t(.*)$//) {
2324                 $res{'nparents'}  = length($1);
2325                 $res{'from_mode'} = [ split(' ', $2) ];
2326                 $res{'to_mode'} = pop @{$res{'from_mode'}};
2327                 $res{'from_id'} = [ split(' ', $3) ];
2328                 $res{'to_id'} = pop @{$res{'from_id'}};
2329                 $res{'status'} = [ split('', $4) ];
2330                 $res{'to_file'} = unquote($5);
2331         }
2332         # 'c512b523472485aef4fff9e57b229d9d243c967f'
2333         elsif ($line =~ m/^([0-9a-fA-F]{40})$/) {
2334                 $res{'commit'} = $1;
2335         }
2336
2337         return wantarray ? %res : \%res;
2338 }
2339
2340 # wrapper: return parsed line of git-diff-tree "raw" output
2341 # (the argument might be raw line, or parsed info)
2342 sub parsed_difftree_line {
2343         my $line_or_ref = shift;
2344
2345         if (ref($line_or_ref) eq "HASH") {
2346                 # pre-parsed (or generated by hand)
2347                 return $line_or_ref;
2348         } else {
2349                 return parse_difftree_raw_line($line_or_ref);
2350         }
2351 }
2352
2353 # parse line of git-ls-tree output
2354 sub parse_ls_tree_line ($;%) {
2355         my $line = shift;
2356         my %opts = @_;
2357         my %res;
2358
2359         #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
2360         $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t(.+)$/s;
2361
2362         $res{'mode'} = $1;
2363         $res{'type'} = $2;
2364         $res{'hash'} = $3;
2365         if ($opts{'-z'}) {
2366                 $res{'name'} = $4;
2367         } else {
2368                 $res{'name'} = unquote($4);
2369         }
2370
2371         return wantarray ? %res : \%res;
2372 }
2373
2374 # generates _two_ hashes, references to which are passed as 2 and 3 argument
2375 sub parse_from_to_diffinfo {
2376         my ($diffinfo, $from, $to, @parents) = @_;
2377
2378         if ($diffinfo->{'nparents'}) {
2379                 # combined diff
2380                 $from->{'file'} = [];
2381                 $from->{'href'} = [];
2382                 fill_from_file_info($diffinfo, @parents)
2383                         unless exists $diffinfo->{'from_file'};
2384                 for (my $i = 0; $i < $diffinfo->{'nparents'}; $i++) {
2385                         $from->{'file'}[$i] =
2386                                 defined $diffinfo->{'from_file'}[$i] ?
2387                                         $diffinfo->{'from_file'}[$i] :
2388                                         $diffinfo->{'to_file'};
2389                         if ($diffinfo->{'status'}[$i] ne "A") { # not new (added) file
2390                                 $from->{'href'}[$i] = href(action=>"blob",
2391                                                            hash_base=>$parents[$i],
2392                                                            hash=>$diffinfo->{'from_id'}[$i],
2393                                                            file_name=>$from->{'file'}[$i]);
2394                         } else {
2395                                 $from->{'href'}[$i] = undef;
2396                         }
2397                 }
2398         } else {
2399                 # ordinary (not combined) diff
2400                 $from->{'file'} = $diffinfo->{'from_file'};
2401                 if ($diffinfo->{'status'} ne "A") { # not new (added) file
2402                         $from->{'href'} = href(action=>"blob", hash_base=>$hash_parent,
2403                                                hash=>$diffinfo->{'from_id'},
2404                                                file_name=>$from->{'file'});
2405                 } else {
2406                         delete $from->{'href'};
2407                 }
2408         }
2409
2410         $to->{'file'} = $diffinfo->{'to_file'};
2411         if (!is_deleted($diffinfo)) { # file exists in result
2412                 $to->{'href'} = href(action=>"blob", hash_base=>$hash,
2413                                      hash=>$diffinfo->{'to_id'},
2414                                      file_name=>$to->{'file'});
2415         } else {
2416                 delete $to->{'href'};
2417         }
2418 }
2419
2420 ## ......................................................................
2421 ## parse to array of hashes functions
2422
2423 sub git_get_heads_list {
2424         my $limit = shift;
2425         my @headslist;
2426
2427         open my $fd, '-|', git_cmd(), 'for-each-ref',
2428                 ($limit ? '--count='.($limit+1) : ()), '--sort=-committerdate',
2429                 '--format=%(objectname) %(refname) %(subject)%00%(committer)',
2430                 'refs/heads'
2431                 or return;
2432         while (my $line = <$fd>) {
2433                 my %ref_item;
2434
2435                 chomp $line;
2436                 my ($refinfo, $committerinfo) = split(/\0/, $line);
2437                 my ($hash, $name, $title) = split(' ', $refinfo, 3);
2438                 my ($committer, $epoch, $tz) =
2439                         ($committerinfo =~ /^(.*) ([0-9]+) (.*)$/);
2440                 $ref_item{'fullname'}  = $name;
2441                 $name =~ s!^refs/heads/!!;
2442
2443                 $ref_item{'name'}  = $name;
2444                 $ref_item{'id'}    = $hash;
2445                 $ref_item{'title'} = $title || '(no commit message)';
2446                 $ref_item{'epoch'} = $epoch;
2447                 if ($epoch) {
2448                         $ref_item{'age'} = age_string(time - $ref_item{'epoch'});
2449                 } else {
2450                         $ref_item{'age'} = "unknown";
2451                 }
2452
2453                 push @headslist, \%ref_item;
2454         }
2455         close $fd;
2456
2457         return wantarray ? @headslist : \@headslist;
2458 }
2459
2460 sub git_get_tags_list {
2461         my $limit = shift;
2462         my @tagslist;
2463
2464         open my $fd, '-|', git_cmd(), 'for-each-ref',
2465                 ($limit ? '--count='.($limit+1) : ()), '--sort=-creatordate',
2466                 '--format=%(objectname) %(objecttype) %(refname) '.
2467                 '%(*objectname) %(*objecttype) %(subject)%00%(creator)',
2468                 'refs/tags'
2469                 or return;
2470         while (my $line = <$fd>) {
2471                 my %ref_item;
2472
2473                 chomp $line;
2474                 my ($refinfo, $creatorinfo) = split(/\0/, $line);
2475                 my ($id, $type, $name, $refid, $reftype, $title) = split(' ', $refinfo, 6);
2476                 my ($creator, $epoch, $tz) =
2477                         ($creatorinfo =~ /^(.*) ([0-9]+) (.*)$/);
2478                 $ref_item{'fullname'} = $name;
2479                 $name =~ s!^refs/tags/!!;
2480
2481                 $ref_item{'type'} = $type;
2482                 $ref_item{'id'} = $id;
2483                 $ref_item{'name'} = $name;
2484                 if ($type eq "tag") {
2485                         $ref_item{'subject'} = $title;
2486                         $ref_item{'reftype'} = $reftype;
2487                         $ref_item{'refid'}   = $refid;
2488                 } else {
2489                         $ref_item{'reftype'} = $type;
2490                         $ref_item{'refid'}   = $id;
2491                 }
2492
2493                 if ($type eq "tag" || $type eq "commit") {
2494                         $ref_item{'epoch'} = $epoch;
2495                         if ($epoch) {
2496                                 $ref_item{'age'} = age_string(time - $ref_item{'epoch'});
2497                         } else {
2498                                 $ref_item{'age'} = "unknown";
2499                         }
2500                 }
2501
2502                 push @tagslist, \%ref_item;
2503         }
2504         close $fd;
2505
2506         return wantarray ? @tagslist : \@tagslist;
2507 }
2508
2509 ## ----------------------------------------------------------------------
2510 ## filesystem-related functions
2511
2512 sub get_file_owner {
2513         my $path = shift;
2514
2515         my ($dev, $ino, $mode, $nlink, $st_uid, $st_gid, $rdev, $size) = stat($path);
2516         my ($name, $passwd, $uid, $gid, $quota, $comment, $gcos, $dir, $shell) = getpwuid($st_uid);
2517         if (!defined $gcos) {
2518                 return undef;
2519         }
2520         my $owner = $gcos;
2521         $owner =~ s/[,;].*$//;
2522         return to_utf8($owner);
2523 }
2524
2525 ## ......................................................................
2526 ## mimetype related functions
2527
2528 sub mimetype_guess_file {
2529         my $filename = shift;
2530         my $mimemap = shift;
2531         -r $mimemap or return undef;
2532
2533         my %mimemap;
2534         open(MIME, $mimemap) or return undef;
2535         while (<MIME>) {
2536                 next if m/^#/; # skip comments
2537                 my ($mime, $exts) = split(/\t+/);
2538                 if (defined $exts) {
2539                         my @exts = split(/\s+/, $exts);
2540                         foreach my $ext (@exts) {
2541                                 $mimemap{$ext} = $mime;
2542                         }
2543                 }
2544         }
2545         close(MIME);
2546
2547         $filename =~ /\.([^.]*)$/;
2548         return $mimemap{$1};
2549 }
2550
2551 sub mimetype_guess {
2552         my $filename = shift;
2553         my $mime;
2554         $filename =~ /\./ or return undef;
2555
2556         if ($mimetypes_file) {
2557                 my $file = $mimetypes_file;
2558                 if ($file !~ m!^/!) { # if it is relative path
2559                         # it is relative to project
2560                         $file = "$projectroot/$project/$file";
2561                 }
2562                 $mime = mimetype_guess_file($filename, $file);
2563         }
2564         $mime ||= mimetype_guess_file($filename, '/etc/mime.types');
2565         return $mime;
2566 }
2567
2568 sub blob_mimetype {
2569         my $fd = shift;
2570         my $filename = shift;
2571
2572         if ($filename) {
2573                 my $mime = mimetype_guess($filename);
2574                 $mime and return $mime;
2575         }
2576
2577         # just in case
2578         return $default_blob_plain_mimetype unless $fd;
2579
2580         if (-T $fd) {
2581                 return 'text/plain';
2582         } elsif (! $filename) {
2583                 return 'application/octet-stream';
2584         } elsif ($filename =~ m/\.png$/i) {
2585                 return 'image/png';
2586         } elsif ($filename =~ m/\.gif$/i) {
2587                 return 'image/gif';
2588         } elsif ($filename =~ m/\.jpe?g$/i) {
2589                 return 'image/jpeg';
2590         } else {
2591                 return 'application/octet-stream';
2592         }
2593 }
2594
2595 sub blob_contenttype {
2596         my ($fd, $file_name, $type) = @_;
2597
2598         $type ||= blob_mimetype($fd, $file_name);
2599         if ($type eq 'text/plain' && defined $default_text_plain_charset) {
2600                 $type .= "; charset=$default_text_plain_charset";
2601         }
2602
2603         return $type;
2604 }
2605
2606 ## ======================================================================
2607 ## functions printing HTML: header, footer, error page
2608
2609 sub git_header_html {
2610         my $status = shift || "200 OK";
2611         my $expires = shift;
2612
2613         my $title = "$site_name";
2614         if (defined $project) {
2615                 $title .= " - " . to_utf8($project);
2616                 if (defined $action) {
2617                         $title .= "/$action";
2618                         if (defined $file_name) {
2619                                 $title .= " - " . esc_path($file_name);
2620                                 if ($action eq "tree" && $file_name !~ m|/$|) {
2621                                         $title .= "/";
2622                                 }
2623                         }
2624                 }
2625         }
2626         my $content_type;
2627         # require explicit support from the UA if we are to send the page as
2628         # 'application/xhtml+xml', otherwise send it as plain old 'text/html'.
2629         # we have to do this because MSIE sometimes globs '*/*', pretending to
2630         # support xhtml+xml but choking when it gets what it asked for.
2631         if (defined $cgi->http('HTTP_ACCEPT') &&
2632             $cgi->http('HTTP_ACCEPT') =~ m/(,|;|\s|^)application\/xhtml\+xml(,|;|\s|$)/ &&
2633             $cgi->Accept('application/xhtml+xml') != 0) {
2634                 $content_type = 'application/xhtml+xml';
2635         } else {
2636                 $content_type = 'text/html';
2637         }
2638         print $cgi->header(-type=>$content_type, -charset => 'utf-8',
2639                            -status=> $status, -expires => $expires);
2640         my $mod_perl_version = $ENV{'MOD_PERL'} ? " $ENV{'MOD_PERL'}" : '';
2641         print <<EOF;
2642 <?xml version="1.0" encoding="utf-8"?>
2643 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
2644 <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en-US" lang="en-US">
2645 <!-- git web interface version $version, (C) 2005-2006, Kay Sievers <kay.sievers\@vrfy.org>, Christian Gierke -->
2646 <!-- git core binaries version $git_version -->
2647 <head>
2648 <meta http-equiv="content-type" content="$content_type; charset=utf-8"/>
2649 <meta name="generator" content="gitweb/$version git/$git_version$mod_perl_version"/>
2650 <meta name="robots" content="index, nofollow"/>
2651 <title>$title</title>
2652 EOF
2653 # print out each stylesheet that exist
2654         if (defined $stylesheet) {
2655 #provides backwards capability for those people who define style sheet in a config file
2656                 print '<link rel="stylesheet" type="text/css" href="'.$stylesheet.'"/>'."\n";
2657         } else {
2658                 foreach my $stylesheet (@stylesheets) {
2659                         next unless $stylesheet;
2660                         print '<link rel="stylesheet" type="text/css" href="'.$stylesheet.'"/>'."\n";
2661                 }
2662         }
2663         if (defined $project) {
2664                 my %href_params = get_feed_info();
2665                 if (!exists $href_params{'-title'}) {
2666                         $href_params{'-title'} = 'log';
2667                 }
2668
2669                 foreach my $format qw(RSS Atom) {
2670                         my $type = lc($format);
2671                         my %link_attr = (
2672                                 '-rel' => 'alternate',
2673                                 '-title' => "$project - $href_params{'-title'} - $format feed",
2674                                 '-type' => "application/$type+xml"
2675                         );
2676
2677                         $href_params{'action'} = $type;
2678                         $link_attr{'-href'} = href(%href_params);
2679                         print "<link ".
2680                               "rel=\"$link_attr{'-rel'}\" ".
2681                               "title=\"$link_attr{'-title'}\" ".
2682                               "href=\"$link_attr{'-href'}\" ".
2683                               "type=\"$link_attr{'-type'}\" ".
2684                               "/>\n";
2685
2686                         $href_params{'extra_options'} = '--no-merges';
2687                         $link_attr{'-href'} = href(%href_params);
2688                         $link_attr{'-title'} .= ' (no merges)';
2689                         print "<link ".
2690                               "rel=\"$link_attr{'-rel'}\" ".
2691                               "title=\"$link_attr{'-title'}\" ".
2692                               "href=\"$link_attr{'-href'}\" ".
2693                               "type=\"$link_attr{'-type'}\" ".
2694                               "/>\n";
2695                 }
2696
2697         } else {
2698                 printf('<link rel="alternate" title="%s projects list" '.
2699                        'href="%s" type="text/plain; charset=utf-8" />'."\n",
2700                        $site_name, href(project=>undef, action=>"project_index"));
2701                 printf('<link rel="alternate" title="%s projects feeds" '.
2702                        'href="%s" type="text/x-opml" />'."\n",
2703                        $site_name, href(project=>undef, action=>"opml"));
2704         }
2705         if (defined $favicon) {
2706                 print qq(<link rel="shortcut icon" href="$favicon" type="image/png" />\n);
2707         }
2708
2709         print "</head>\n" .
2710               "<body>\n";
2711
2712         if (-f $site_header) {
2713                 open (my $fd, $site_header);
2714                 print <$fd>;
2715                 close $fd;
2716         }
2717
2718         print "<div class=\"page_header\">\n" .
2719               $cgi->a({-href => esc_url($logo_url),
2720                        -title => $logo_label},
2721                       qq(<img src="$logo" width="72" height="27" alt="git" class="logo"/>));
2722         print $cgi->a({-href => esc_url($home_link)}, $home_link_str) . " / ";
2723         if (defined $project) {
2724                 print $cgi->a({-href => href(action=>"summary")}, esc_html($project));
2725                 if (defined $action) {
2726                         print " / $action";
2727                 }
2728                 print "\n";
2729         }
2730         print "</div>\n";
2731
2732         my ($have_search) = gitweb_check_feature('search');
2733         if (defined $project && $have_search) {
2734                 if (!defined $searchtext) {
2735                         $searchtext = "";
2736                 }
2737                 my $search_hash;
2738                 if (defined $hash_base) {
2739                         $search_hash = $hash_base;
2740                 } elsif (defined $hash) {
2741                         $search_hash = $hash;
2742                 } else {
2743                         $search_hash = "HEAD";
2744                 }
2745                 my $action = $my_uri;
2746                 my ($use_pathinfo) = gitweb_check_feature('pathinfo');
2747                 if ($use_pathinfo) {
2748                         $action .= "/".esc_url($project);
2749                 }
2750                 print $cgi->startform(-method => "get", -action => $action) .
2751                       "<div class=\"search\">\n" .
2752                       (!$use_pathinfo &&
2753                       $cgi->input({-name=>"p", -value=>$project, -type=>"hidden"}) . "\n") .
2754                       $cgi->input({-name=>"a", -value=>"search", -type=>"hidden"}) . "\n" .
2755                       $cgi->input({-name=>"h", -value=>$search_hash, -type=>"hidden"}) . "\n" .
2756                       $cgi->popup_menu(-name => 'st', -default => 'commit',
2757                                        -values => ['commit', 'grep', 'author', 'committer', 'pickaxe']) .
2758                       $cgi->sup($cgi->a({-href => href(action=>"search_help")}, "?")) .
2759                       " search:\n",
2760                       $cgi->textfield(-name => "s", -value => $searchtext) . "\n" .
2761                       "<span title=\"Extended regular expression\">" .
2762                       $cgi->checkbox(-name => 'sr', -value => 1, -label => 're',
2763                                      -checked => $search_use_regexp) .
2764                       "</span>" .
2765                       "</div>" .
2766                       $cgi->end_form() . "\n";
2767         }
2768 }
2769
2770 sub git_footer_html {
2771         my $feed_class = 'rss_logo';
2772
2773         print "<div class=\"page_footer\">\n";
2774         if (defined $project) {
2775                 my $descr = git_get_project_description($project);
2776                 if (defined $descr) {
2777                         print "<div class=\"page_footer_text\">" . esc_html($descr) . "</div>\n";
2778                 }
2779
2780                 my %href_params = get_feed_info();
2781                 if (!%href_params) {
2782                         $feed_class .= ' generic';
2783                 }
2784                 $href_params{'-title'} ||= 'log';
2785
2786                 foreach my $format qw(RSS Atom) {
2787                         $href_params{'action'} = lc($format);
2788                         print $cgi->a({-href => href(%href_params),
2789                                       -title => "$href_params{'-title'} $format feed",
2790                                       -class => $feed_class}, $format)."\n";
2791                 }
2792
2793         } else {
2794                 print $cgi->a({-href => href(project=>undef, action=>"opml"),
2795                               -class => $feed_class}, "OPML") . " ";
2796                 print $cgi->a({-href => href(project=>undef, action=>"project_index"),
2797                               -class => $feed_class}, "TXT") . "\n";
2798         }
2799         print "</div>\n"; # class="page_footer"
2800
2801         if (-f $site_footer) {
2802                 open (my $fd, $site_footer);
2803                 print <$fd>;
2804                 close $fd;
2805         }
2806
2807         print "</body>\n" .
2808               "</html>";
2809 }
2810
2811 # die_error(<http_status_code>, <error_message>)
2812 # Example: die_error(404, 'Hash not found')
2813 # By convention, use the following status codes (as defined in RFC 2616):
2814 # 400: Invalid or missing CGI parameters, or
2815 #      requested object exists but has wrong type.
2816 # 403: Requested feature (like "pickaxe" or "snapshot") not enabled on
2817 #      this server or project.
2818 # 404: Requested object/revision/project doesn't exist.
2819 # 500: The server isn't configured properly, or
2820 #      an internal error occurred (e.g. failed assertions caused by bugs), or
2821 #      an unknown error occurred (e.g. the git binary died unexpectedly).
2822 sub die_error {
2823         my $status = shift || 500;
2824         my $error = shift || "Internal server error";
2825
2826         my %http_responses = (400 => '400 Bad Request',
2827                               403 => '403 Forbidden',
2828                               404 => '404 Not Found',
2829                               500 => '500 Internal Server Error');
2830         git_header_html($http_responses{$status});
2831         print <<EOF;
2832 <div class="page_body">
2833 <br /><br />
2834 $status - $error
2835 <br />
2836 </div>
2837 EOF
2838         git_footer_html();
2839         exit;
2840 }
2841
2842 ## ----------------------------------------------------------------------
2843 ## functions printing or outputting HTML: navigation
2844
2845 sub git_print_page_nav {
2846         my ($current, $suppress, $head, $treehead, $treebase, $extra) = @_;
2847         $extra = '' if !defined $extra; # pager or formats
2848
2849         my @navs = qw(summary shortlog log commit commitdiff tree);
2850         if ($suppress) {
2851                 @navs = grep { $_ ne $suppress } @navs;
2852         }
2853
2854         my %arg = map { $_ => {action=>$_} } @navs;
2855         if (defined $head) {
2856                 for (qw(commit commitdiff)) {
2857                         $arg{$_}{'hash'} = $head;
2858                 }
2859                 if ($current =~ m/^(tree | log | shortlog | commit | commitdiff | search)$/x) {
2860                         for (qw(shortlog log)) {
2861                                 $arg{$_}{'hash'} = $head;
2862                         }
2863                 }
2864         }
2865
2866         $arg{'tree'}{'hash'} = $treehead if defined $treehead;
2867         $arg{'tree'}{'hash_base'} = $treebase if defined $treebase;
2868
2869         my @actions = gitweb_check_feature('actions');
2870         while (@actions) {
2871                 my ($label, $link, $pos) = (shift(@actions), shift(@actions), shift(@actions));
2872                 @navs = map { $_ eq $pos ? ($_, $label) : $_ } @navs;
2873                 # munch munch
2874                 $link =~ s#%n#$project#g;
2875                 $link =~ s#%f#$git_dir#g;
2876                 $treehead ? $link =~ s#%h#$treehead#g : $link =~ s#%h##g;
2877                 $treebase ? $link =~ s#%b#$treebase#g : $link =~ s#%b##g;
2878                 $arg{$label}{'_href'} = $link;
2879         }
2880
2881         print "<div class=\"page_nav\">\n" .
2882                 (join " | ",
2883                  map { $_ eq $current ?
2884                        $_ : $cgi->a({-href => ($arg{$_}{_href} ? $arg{$_}{_href} : href(%{$arg{$_}}))}, "$_")
2885                  } @navs);
2886         print "<br/>\n$extra<br/>\n" .
2887               "</div>\n";
2888 }
2889
2890 sub format_paging_nav {
2891         my ($action, $hash, $head, $page, $has_next_link) = @_;
2892         my $paging_nav;
2893
2894
2895         if ($hash ne $head || $page) {
2896                 $paging_nav .= $cgi->a({-href => href(action=>$action)}, "HEAD");
2897         } else {
2898                 $paging_nav .= "HEAD";
2899         }
2900
2901         if ($page > 0) {
2902                 $paging_nav .= " &sdot; " .
2903                         $cgi->a({-href => href(-replay=>1, page=>$page-1),
2904                                  -accesskey => "p", -title => "Alt-p"}, "prev");
2905         } else {
2906                 $paging_nav .= " &sdot; prev";
2907         }
2908
2909         if ($has_next_link) {
2910                 $paging_nav .= " &sdot; " .
2911                         $cgi->a({-href => href(-replay=>1, page=>$page+1),
2912                                  -accesskey => "n", -title => "Alt-n"}, "next");
2913         } else {
2914                 $paging_nav .= " &sdot; next";
2915         }
2916
2917         return $paging_nav;
2918 }
2919
2920 ## ......................................................................
2921 ## functions printing or outputting HTML: div
2922
2923 sub git_print_header_div {
2924         my ($action, $title, $hash, $hash_base) = @_;
2925         my %args = ();
2926
2927         $args{'action'} = $action;
2928         $args{'hash'} = $hash if $hash;
2929         $args{'hash_base'} = $hash_base if $hash_base;
2930
2931         print "<div class=\"header\">\n" .
2932               $cgi->a({-href => href(%args), -class => "title"},
2933               $title ? $title : $action) .
2934               "\n</div>\n";
2935 }
2936
2937 #sub git_print_authorship (\%) {
2938 sub git_print_authorship {
2939         my $co = shift;
2940
2941         my %ad = parse_date($co->{'author_epoch'}, $co->{'author_tz'});
2942         print "<div class=\"author_date\">" .
2943               esc_html($co->{'author_name'}) .
2944               " [$ad{'rfc2822'}";
2945         if ($ad{'hour_local'} < 6) {
2946                 printf(" (<span class=\"atnight\">%02d:%02d</span> %s)",
2947                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
2948         } else {
2949                 printf(" (%02d:%02d %s)",
2950                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
2951         }
2952         print "]</div>\n";
2953 }
2954
2955 sub git_print_page_path {
2956         my $name = shift;
2957         my $type = shift;
2958         my $hb = shift;
2959
2960
2961         print "<div class=\"page_path\">";
2962         print $cgi->a({-href => href(action=>"tree", hash_base=>$hb),
2963                       -title => 'tree root'}, to_utf8("[$project]"));
2964         print " / ";
2965         if (defined $name) {
2966                 my @dirname = split '/', $name;
2967                 my $basename = pop @dirname;
2968                 my $fullname = '';
2969
2970                 foreach my $dir (@dirname) {
2971                         $fullname .= ($fullname ? '/' : '') . $dir;
2972                         print $cgi->a({-href => href(action=>"tree", file_name=>$fullname,
2973                                                      hash_base=>$hb),
2974                                       -title => $fullname}, esc_path($dir));
2975                         print " / ";
2976                 }
2977                 if (defined $type && $type eq 'blob') {
2978                         print $cgi->a({-href => href(action=>"blob_plain", file_name=>$file_name,
2979                                                      hash_base=>$hb),
2980                                       -title => $name}, esc_path($basename));
2981                 } elsif (defined $type && $type eq 'tree') {
2982                         print $cgi->a({-href => href(action=>"tree", file_name=>$file_name,
2983                                                      hash_base=>$hb),
2984                                       -title => $name}, esc_path($basename));
2985                         print " / ";
2986                 } else {
2987                         print esc_path($basename);
2988                 }
2989         }
2990         print "<br/></div>\n";
2991 }
2992
2993 # sub git_print_log (\@;%) {
2994 sub git_print_log ($;%) {
2995         my $log = shift;
2996         my %opts = @_;
2997
2998         if ($opts{'-remove_title'}) {
2999                 # remove title, i.e. first line of log
3000                 shift @$log;
3001         }
3002         # remove leading empty lines
3003         while (defined $log->[0] && $log->[0] eq "") {
3004                 shift @$log;
3005         }
3006
3007         # print log
3008         my $signoff = 0;
3009         my $empty = 0;
3010         foreach my $line (@$log) {
3011                 if ($line =~ m/^ *(signed[ \-]off[ \-]by[ :]|acked[ \-]by[ :]|cc[ :])/i) {
3012                         $signoff = 1;
3013                         $empty = 0;
3014                         if (! $opts{'-remove_signoff'}) {
3015                                 print "<span class=\"signoff\">" . esc_html($line) . "</span><br/>\n";
3016                                 next;
3017                         } else {
3018                                 # remove signoff lines
3019                                 next;
3020                         }
3021                 } else {
3022                         $signoff = 0;
3023                 }
3024
3025                 # print only one empty line
3026                 # do not print empty line after signoff
3027                 if ($line eq "") {
3028                         next if ($empty || $signoff);
3029                         $empty = 1;
3030                 } else {
3031                         $empty = 0;
3032                 }
3033
3034                 print format_log_line_html($line) . "<br/>\n";
3035         }
3036
3037         if ($opts{'-final_empty_line'}) {
3038                 # end with single empty line
3039                 print "<br/>\n" unless $empty;
3040         }
3041 }
3042
3043 # return link target (what link points to)
3044 sub git_get_link_target {
3045         my $hash = shift;
3046         my $link_target;
3047
3048         # read link
3049         open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
3050                 or return;
3051         {
3052                 local $/;
3053                 $link_target = <$fd>;
3054         }
3055         close $fd
3056                 or return;
3057
3058         return $link_target;
3059 }
3060
3061 # given link target, and the directory (basedir) the link is in,
3062 # return target of link relative to top directory (top tree);
3063 # return undef if it is not possible (including absolute links).
3064 sub normalize_link_target {
3065         my ($link_target, $basedir, $hash_base) = @_;
3066
3067         # we can normalize symlink target only if $hash_base is provided
3068         return unless $hash_base;
3069
3070         # absolute symlinks (beginning with '/') cannot be normalized
3071         return if (substr($link_target, 0, 1) eq '/');
3072
3073         # normalize link target to path from top (root) tree (dir)
3074         my $path;
3075         if ($basedir) {
3076                 $path = $basedir . '/' . $link_target;
3077         } else {
3078                 # we are in top (root) tree (dir)
3079                 $path = $link_target;
3080         }
3081
3082         # remove //, /./, and /../
3083         my @path_parts;
3084         foreach my $part (split('/', $path)) {
3085                 # discard '.' and ''
3086                 next if (!$part || $part eq '.');
3087                 # handle '..'
3088                 if ($part eq '..') {
3089                         if (@path_parts) {
3090                                 pop @path_parts;
3091                         } else {
3092                                 # link leads outside repository (outside top dir)
3093                                 return;
3094                         }
3095                 } else {
3096                         push @path_parts, $part;
3097                 }
3098         }
3099         $path = join('/', @path_parts);
3100
3101         return $path;
3102 }
3103
3104 # print tree entry (row of git_tree), but without encompassing <tr> element
3105 sub git_print_tree_entry {
3106         my ($t, $basedir, $hash_base, $have_blame) = @_;
3107
3108         my %base_key = ();
3109         $base_key{'hash_base'} = $hash_base if defined $hash_base;
3110
3111         # The format of a table row is: mode list link.  Where mode is
3112         # the mode of the entry, list is the name of the entry, an href,
3113         # and link is the action links of the entry.
3114
3115         print "<td class=\"mode\">" . mode_str($t->{'mode'}) . "</td>\n";
3116         if ($t->{'type'} eq "blob") {
3117                 print "<td class=\"list\">" .
3118                         $cgi->a({-href => href(action=>"blob", hash=>$t->{'hash'},
3119                                                file_name=>"$basedir$t->{'name'}", %base_key),
3120                                 -class => "list"}, esc_path($t->{'name'}));
3121                 if (S_ISLNK(oct $t->{'mode'})) {
3122                         my $link_target = git_get_link_target($t->{'hash'});
3123                         if ($link_target) {
3124                                 my $norm_target = normalize_link_target($link_target, $basedir, $hash_base);
3125                                 if (defined $norm_target) {
3126                                         print " -> " .
3127                                               $cgi->a({-href => href(action=>"object", hash_base=>$hash_base,
3128                                                                      file_name=>$norm_target),
3129                                                        -title => $norm_target}, esc_path($link_target));
3130                                 } else {
3131                                         print " -> " . esc_path($link_target);
3132                                 }
3133                         }
3134                 }
3135                 print "</td>\n";
3136                 print "<td class=\"link\">";
3137                 print $cgi->a({-href => href(action=>"blob", hash=>$t->{'hash'},
3138                                              file_name=>"$basedir$t->{'name'}", %base_key)},
3139                               "blob");
3140                 if ($have_blame) {
3141                         print " | " .
3142                               $cgi->a({-href => href(action=>"blame", hash=>$t->{'hash'},
3143                                                      file_name=>"$basedir$t->{'name'}", %base_key)},
3144                                       "blame");
3145                 }
3146                 if (defined $hash_base) {
3147                         print " | " .
3148                               $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
3149                                                      hash=>$t->{'hash'}, file_name=>"$basedir$t->{'name'}")},
3150                                       "history");
3151                 }
3152                 print " | " .
3153                         $cgi->a({-href => href(action=>"blob_plain", hash_base=>$hash_base,
3154                                                file_name=>"$basedir$t->{'name'}")},
3155                                 "raw");
3156                 print "</td>\n";
3157
3158         } elsif ($t->{'type'} eq "tree") {
3159                 print "<td class=\"list\">";
3160                 print $cgi->a({-href => href(action=>"tree", hash=>$t->{'hash'},
3161                                              file_name=>"$basedir$t->{'name'}", %base_key)},
3162                               esc_path($t->{'name'}));
3163                 print "</td>\n";
3164                 print "<td class=\"link\">";
3165                 print $cgi->a({-href => href(action=>"tree", hash=>$t->{'hash'},
3166                                              file_name=>"$basedir$t->{'name'}", %base_key)},
3167                               "tree");
3168                 if (defined $hash_base) {
3169                         print " | " .
3170                               $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
3171                                                      file_name=>"$basedir$t->{'name'}")},
3172                                       "history");
3173                 }
3174                 print "</td>\n";
3175         } else {
3176                 # unknown object: we can only present history for it
3177                 # (this includes 'commit' object, i.e. submodule support)
3178                 print "<td class=\"list\">" .
3179                       esc_path($t->{'name'}) .
3180                       "</td>\n";
3181                 print "<td class=\"link\">";
3182                 if (defined $hash_base) {
3183                         print $cgi->a({-href => href(action=>"history",
3184                                                      hash_base=>$hash_base,
3185                                                      file_name=>"$basedir$t->{'name'}")},
3186                                       "history");
3187                 }
3188                 print "</td>\n";
3189         }
3190 }
3191
3192 ## ......................................................................
3193 ## functions printing large fragments of HTML
3194
3195 # get pre-image filenames for merge (combined) diff
3196 sub fill_from_file_info {
3197         my ($diff, @parents) = @_;
3198
3199         $diff->{'from_file'} = [ ];
3200         $diff->{'from_file'}[$diff->{'nparents'} - 1] = undef;
3201         for (my $i = 0; $i < $diff->{'nparents'}; $i++) {
3202                 if ($diff->{'status'}[$i] eq 'R' ||
3203                     $diff->{'status'}[$i] eq 'C') {
3204                         $diff->{'from_file'}[$i] =
3205                                 git_get_path_by_hash($parents[$i], $diff->{'from_id'}[$i]);
3206                 }
3207         }
3208
3209         return $diff;
3210 }
3211
3212 # is current raw difftree line of file deletion
3213 sub is_deleted {
3214         my $diffinfo = shift;
3215
3216         return $diffinfo->{'to_id'} eq ('0' x 40);
3217 }
3218
3219 # does patch correspond to [previous] difftree raw line
3220 # $diffinfo  - hashref of parsed raw diff format
3221 # $patchinfo - hashref of parsed patch diff format
3222 #              (the same keys as in $diffinfo)
3223 sub is_patch_split {
3224         my ($diffinfo, $patchinfo) = @_;
3225
3226         return defined $diffinfo && defined $patchinfo
3227                 && $diffinfo->{'to_file'} eq $patchinfo->{'to_file'};
3228 }
3229
3230
3231 sub git_difftree_body {
3232         my ($difftree, $hash, @parents) = @_;
3233         my ($parent) = $parents[0];
3234         my ($have_blame) = gitweb_check_feature('blame');
3235         print "<div class=\"list_head\">\n";
3236         if ($#{$difftree} > 10) {
3237                 print(($#{$difftree} + 1) . " files changed:\n");
3238         }
3239         print "</div>\n";
3240
3241         print "<table class=\"" .
3242               (@parents > 1 ? "combined " : "") .
3243               "diff_tree\">\n";
3244
3245         # header only for combined diff in 'commitdiff' view
3246         my $has_header = @$difftree && @parents > 1 && $action eq 'commitdiff';
3247         if ($has_header) {
3248                 # table header
3249                 print "<thead><tr>\n" .
3250                        "<th></th><th></th>\n"; # filename, patchN link
3251                 for (my $i = 0; $i < @parents; $i++) {
3252                         my $par = $parents[$i];
3253                         print "<th>" .
3254                               $cgi->a({-href => href(action=>"commitdiff",
3255                                                      hash=>$hash, hash_parent=>$par),
3256                                        -title => 'commitdiff to parent number ' .
3257                                                   ($i+1) . ': ' . substr($par,0,7)},
3258                                       $i+1) .
3259                               "&nbsp;</th>\n";
3260                 }
3261                 print "</tr></thead>\n<tbody>\n";
3262         }
3263
3264         my $alternate = 1;
3265         my $patchno = 0;
3266         foreach my $line (@{$difftree}) {
3267                 my $diff = parsed_difftree_line($line);
3268
3269                 if ($alternate) {
3270                         print "<tr class=\"dark\">\n";
3271                 } else {
3272                         print "<tr class=\"light\">\n";
3273                 }
3274                 $alternate ^= 1;
3275
3276                 if (exists $diff->{'nparents'}) { # combined diff
3277
3278                         fill_from_file_info($diff, @parents)
3279                                 unless exists $diff->{'from_file'};
3280
3281                         if (!is_deleted($diff)) {
3282                                 # file exists in the result (child) commit
3283                                 print "<td>" .
3284                                       $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
3285                                                              file_name=>$diff->{'to_file'},
3286                                                              hash_base=>$hash),
3287                                               -class => "list"}, esc_path($diff->{'to_file'})) .
3288                                       "</td>\n";
3289                         } else {
3290                                 print "<td>" .
3291                                       esc_path($diff->{'to_file'}) .
3292                                       "</td>\n";
3293                         }
3294
3295                         if ($action eq 'commitdiff') {
3296                                 # link to patch
3297                                 $patchno++;
3298                                 print "<td class=\"link\">" .
3299                                       $cgi->a({-href => "#patch$patchno"}, "patch") .
3300                                       " | " .
3301                                       "</td>\n";
3302                         }
3303
3304                         my $has_history = 0;
3305                         my $not_deleted = 0;
3306                         for (my $i = 0; $i < $diff->{'nparents'}; $i++) {
3307                                 my $hash_parent = $parents[$i];
3308                                 my $from_hash = $diff->{'from_id'}[$i];
3309                                 my $from_path = $diff->{'from_file'}[$i];
3310                                 my $status = $diff->{'status'}[$i];
3311
3312                                 $has_history ||= ($status ne 'A');
3313                                 $not_deleted ||= ($status ne 'D');
3314
3315                                 if ($status eq 'A') {
3316                                         print "<td  class=\"link\" align=\"right\"> | </td>\n";
3317                                 } elsif ($status eq 'D') {
3318                                         print "<td class=\"link\">" .
3319                                               $cgi->a({-href => href(action=>"blob",
3320                                                                      hash_base=>$hash,
3321                                                                      hash=>$from_hash,
3322                                                                      file_name=>$from_path)},
3323                                                       "blob" . ($i+1)) .
3324                                               " | </td>\n";
3325                                 } else {
3326                                         if ($diff->{'to_id'} eq $from_hash) {
3327                                                 print "<td class=\"link nochange\">";
3328                                         } else {
3329                                                 print "<td class=\"link\">";
3330                                         }
3331                                         print $cgi->a({-href => href(action=>"blobdiff",
3332                                                                      hash=>$diff->{'to_id'},
3333                                                                      hash_parent=>$from_hash,
3334                                                                      hash_base=>$hash,
3335                                                                      hash_parent_base=>$hash_parent,
3336                                                                      file_name=>$diff->{'to_file'},
3337                                                                      file_parent=>$from_path)},
3338                                                       "diff" . ($i+1)) .
3339                                               " | </td>\n";
3340                                 }
3341                         }
3342
3343                         print "<td class=\"link\">";
3344                         if ($not_deleted) {
3345                                 print $cgi->a({-href => href(action=>"blob",
3346                                                              hash=>$diff->{'to_id'},
3347                                                              file_name=>$diff->{'to_file'},
3348                                                              hash_base=>$hash)},
3349                                               "blob");
3350                                 print " | " if ($has_history);
3351                         }
3352                         if ($has_history) {
3353                                 print $cgi->a({-href => href(action=>"history",
3354                                                              file_name=>$diff->{'to_file'},
3355                                                              hash_base=>$hash)},
3356                                               "history");
3357                         }
3358                         print "</td>\n";
3359
3360                         print "</tr>\n";
3361                         next; # instead of 'else' clause, to avoid extra indent
3362                 }
3363                 # else ordinary diff
3364
3365                 my ($to_mode_oct, $to_mode_str, $to_file_type);
3366                 my ($from_mode_oct, $from_mode_str, $from_file_type);
3367                 if ($diff->{'to_mode'} ne ('0' x 6)) {
3368                         $to_mode_oct = oct $diff->{'to_mode'};
3369                         if (S_ISREG($to_mode_oct)) { # only for regular file
3370                                 $to_mode_str = sprintf("%04o", $to_mode_oct & 0777); # permission bits
3371                         }
3372                         $to_file_type = file_type($diff->{'to_mode'});
3373                 }
3374                 if ($diff->{'from_mode'} ne ('0' x 6)) {
3375                         $from_mode_oct = oct $diff->{'from_mode'};
3376                         if (S_ISREG($to_mode_oct)) { # only for regular file
3377                                 $from_mode_str = sprintf("%04o", $from_mode_oct & 0777); # permission bits
3378                         }
3379                         $from_file_type = file_type($diff->{'from_mode'});
3380                 }
3381
3382                 if ($diff->{'status'} eq "A") { # created
3383                         my $mode_chng = "<span class=\"file_status new\">[new $to_file_type";
3384                         $mode_chng   .= " with mode: $to_mode_str" if $to_mode_str;
3385                         $mode_chng   .= "]</span>";
3386                         print "<td>";
3387                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
3388                                                      hash_base=>$hash, file_name=>$diff->{'file'}),
3389                                       -class => "list"}, esc_path($diff->{'file'}));
3390                         print "</td>\n";
3391                         print "<td>$mode_chng</td>\n";
3392                         print "<td class=\"link\">";
3393                         if ($action eq 'commitdiff') {
3394                                 # link to patch
3395                                 $patchno++;
3396                                 print $cgi->a({-href => "#patch$patchno"}, "patch");
3397                                 print " | ";
3398                         }
3399                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
3400                                                      hash_base=>$hash, file_name=>$diff->{'file'})},
3401                                       "blob");
3402                         print "</td>\n";
3403
3404                 } elsif ($diff->{'status'} eq "D") { # deleted
3405                         my $mode_chng = "<span class=\"file_status deleted\">[deleted $from_file_type]</span>";
3406                         print "<td>";
3407                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'from_id'},
3408                                                      hash_base=>$parent, file_name=>$diff->{'file'}),
3409                                        -class => "list"}, esc_path($diff->{'file'}));
3410                         print "</td>\n";
3411                         print "<td>$mode_chng</td>\n";
3412                         print "<td class=\"link\">";
3413                         if ($action eq 'commitdiff') {
3414                                 # link to patch
3415                                 $patchno++;
3416                                 print $cgi->a({-href => "#patch$patchno"}, "patch");
3417                                 print " | ";
3418                         }
3419                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'from_id'},
3420                                                      hash_base=>$parent, file_name=>$diff->{'file'})},
3421                                       "blob") . " | ";
3422                         if ($have_blame) {
3423                                 print $cgi->a({-href => href(action=>"blame", hash_base=>$parent,
3424                                                              file_name=>$diff->{'file'})},
3425                                               "blame") . " | ";
3426                         }
3427                         print $cgi->a({-href => href(action=>"history", hash_base=>$parent,
3428                                                      file_name=>$diff->{'file'})},
3429                                       "history");
3430                         print "</td>\n";
3431
3432                 } elsif ($diff->{'status'} eq "M" || $diff->{'status'} eq "T") { # modified, or type changed
3433                         my $mode_chnge = "";
3434                         if ($diff->{'from_mode'} != $diff->{'to_mode'}) {
3435                                 $mode_chnge = "<span class=\"file_status mode_chnge\">[changed";
3436                                 if ($from_file_type ne $to_file_type) {
3437                                         $mode_chnge .= " from $from_file_type to $to_file_type";
3438                                 }
3439                                 if (($from_mode_oct & 0777) != ($to_mode_oct & 0777)) {
3440                                         if ($from_mode_str && $to_mode_str) {
3441                                                 $mode_chnge .= " mode: $from_mode_str->$to_mode_str";
3442                                         } elsif ($to_mode_str) {
3443                                                 $mode_chnge .= " mode: $to_mode_str";
3444                                         }
3445                                 }
3446                                 $mode_chnge .= "]</span>\n";
3447                         }
3448                         print "<td>";
3449                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
3450                                                      hash_base=>$hash, file_name=>$diff->{'file'}),
3451                                       -class => "list"}, esc_path($diff->{'file'}));
3452                         print "</td>\n";
3453                         print "<td>$mode_chnge</td>\n";
3454                         print "<td class=\"link\">";
3455                         if ($action eq 'commitdiff') {
3456                                 # link to patch
3457                                 $patchno++;
3458                                 print $cgi->a({-href => "#patch$patchno"}, "patch") .
3459                                       " | ";
3460                         } elsif ($diff->{'to_id'} ne $diff->{'from_id'}) {
3461                                 # "commit" view and modified file (not onlu mode changed)
3462                                 print $cgi->a({-href => href(action=>"blobdiff",
3463                                                              hash=>$diff->{'to_id'}, hash_parent=>$diff->{'from_id'},
3464                                                              hash_base=>$hash, hash_parent_base=>$parent,
3465                                                              file_name=>$diff->{'file'})},
3466                                               "diff") .
3467                                       " | ";
3468                         }
3469                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
3470                                                      hash_base=>$hash, file_name=>$diff->{'file'})},
3471                                        "blob") . " | ";
3472                         if ($have_blame) {
3473                                 print $cgi->a({-href => href(action=>"blame", hash_base=>$hash,
3474                                                              file_name=>$diff->{'file'})},
3475                                               "blame") . " | ";
3476                         }
3477                         print $cgi->a({-href => href(action=>"history", hash_base=>$hash,
3478                                                      file_name=>$diff->{'file'})},
3479                                       "history");
3480                         print "</td>\n";
3481
3482                 } elsif ($diff->{'status'} eq "R" || $diff->{'status'} eq "C") { # renamed or copied
3483                         my %status_name = ('R' => 'moved', 'C' => 'copied');
3484                         my $nstatus = $status_name{$diff->{'status'}};
3485                         my $mode_chng = "";
3486                         if ($diff->{'from_mode'} != $diff->{'to_mode'}) {
3487                                 # mode also for directories, so we cannot use $to_mode_str
3488                                 $mode_chng = sprintf(", mode: %04o", $to_mode_oct & 0777);
3489                         }
3490                         print "<td>" .
3491                               $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
3492                                                      hash=>$diff->{'to_id'}, file_name=>$diff->{'to_file'}),
3493                                       -class => "list"}, esc_path($diff->{'to_file'})) . "</td>\n" .
3494                               "<td><span class=\"file_status $nstatus\">[$nstatus from " .
3495                               $cgi->a({-href => href(action=>"blob", hash_base=>$parent,
3496                                                      hash=>$diff->{'from_id'}, file_name=>$diff->{'from_file'}),
3497                                       -class => "list"}, esc_path($diff->{'from_file'})) .
3498                               " with " . (int $diff->{'similarity'}) . "% similarity$mode_chng]</span></td>\n" .
3499                               "<td class=\"link\">";
3500                         if ($action eq 'commitdiff') {
3501                                 # link to patch
3502                                 $patchno++;
3503                                 print $cgi->a({-href => "#patch$patchno"}, "patch") .
3504                                       " | ";
3505                         } elsif ($diff->{'to_id'} ne $diff->{'from_id'}) {
3506                                 # "commit" view and modified file (not only pure rename or copy)
3507                                 print $cgi->a({-href => href(action=>"blobdiff",
3508                                                              hash=>$diff->{'to_id'}, hash_parent=>$diff->{'from_id'},
3509                                                              hash_base=>$hash, hash_parent_base=>$parent,
3510                                                              file_name=>$diff->{'to_file'}, file_parent=>$diff->{'from_file'})},
3511                                               "diff") .
3512                                       " | ";
3513                         }
3514                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
3515                                                      hash_base=>$parent, file_name=>$diff->{'to_file'})},
3516                                       "blob") . " | ";
3517                         if ($have_blame) {
3518                                 print $cgi->a({-href => href(action=>"blame", hash_base=>$hash,
3519                                                              file_name=>$diff->{'to_file'})},
3520                                               "blame") . " | ";
3521                         }
3522                         print $cgi->a({-href => href(action=>"history", hash_base=>$hash,
3523                                                     file_name=>$diff->{'to_file'})},
3524                                       "history");
3525                         print "</td>\n";
3526
3527                 } # we should not encounter Unmerged (U) or Unknown (X) status
3528                 print "</tr>\n";
3529         }
3530         print "</tbody>" if $has_header;
3531         print "</table>\n";
3532 }
3533
3534 sub git_patchset_body {
3535         my ($fd, $difftree, $hash, @hash_parents) = @_;
3536         my ($hash_parent) = $hash_parents[0];
3537
3538         my $is_combined = (@hash_parents > 1);
3539         my $patch_idx = 0;
3540         my $patch_number = 0;
3541         my $patch_line;
3542         my $diffinfo;
3543         my $to_name;
3544         my (%from, %to);
3545
3546         print "<div class=\"patchset\">\n";
3547
3548         # skip to first patch
3549         while ($patch_line = <$fd>) {
3550                 chomp $patch_line;
3551
3552                 last if ($patch_line =~ m/^diff /);
3553         }
3554
3555  PATCH:
3556         while ($patch_line) {
3557
3558                 # parse "git diff" header line
3559                 if ($patch_line =~ m/^diff --git (\"(?:[^\\\"]*(?:\\.[^\\\"]*)*)\"|[^ "]*) (.*)$/) {
3560                         # $1 is from_name, which we do not use
3561                         $to_name = unquote($2);
3562                         $to_name =~ s!^b/!!;
3563                 } elsif ($patch_line =~ m/^diff --(cc|combined) ("?.*"?)$/) {
3564                         # $1 is 'cc' or 'combined', which we do not use
3565                         $to_name = unquote($2);
3566                 } else {
3567                         $to_name = undef;
3568                 }
3569
3570                 # check if current patch belong to current raw line
3571                 # and parse raw git-diff line if needed
3572                 if (is_patch_split($diffinfo, { 'to_file' => $to_name })) {
3573                         # this is continuation of a split patch
3574                         print "<div class=\"patch cont\">\n";
3575                 } else {
3576                         # advance raw git-diff output if needed
3577                         $patch_idx++ if defined $diffinfo;
3578
3579                         # read and prepare patch information
3580                         $diffinfo = parsed_difftree_line($difftree->[$patch_idx]);
3581
3582                         # compact combined diff output can have some patches skipped
3583                         # find which patch (using pathname of result) we are at now;
3584                         if ($is_combined) {
3585                                 while ($to_name ne $diffinfo->{'to_file'}) {
3586                                         print "<div class=\"patch\" id=\"patch". ($patch_idx+1) ."\">\n" .
3587                                               format_diff_cc_simplified($diffinfo, @hash_parents) .
3588                                               "</div>\n";  # class="patch"
3589
3590                                         $patch_idx++;
3591                                         $patch_number++;
3592
3593                                         last if $patch_idx > $#$difftree;
3594                                         $diffinfo = parsed_difftree_line($difftree->[$patch_idx]);
3595                                 }
3596                         }
3597
3598                         # modifies %from, %to hashes
3599                         parse_from_to_diffinfo($diffinfo, \%from, \%to, @hash_parents);
3600
3601                         # this is first patch for raw difftree line with $patch_idx index
3602                         # we index @$difftree array from 0, but number patches from 1
3603                         print "<div class=\"patch\" id=\"patch". ($patch_idx+1) ."\">\n";
3604                 }
3605
3606                 # git diff header
3607                 #assert($patch_line =~ m/^diff /) if DEBUG;
3608                 #assert($patch_line !~ m!$/$!) if DEBUG; # is chomp-ed
3609                 $patch_number++;
3610                 # print "git diff" header
3611                 print format_git_diff_header_line($patch_line, $diffinfo,
3612                                                   \%from, \%to);
3613
3614                 # print extended diff header
3615                 print "<div class=\"diff extended_header\">\n";
3616         EXTENDED_HEADER:
3617                 while ($patch_line = <$fd>) {
3618                         chomp $patch_line;
3619
3620                         last EXTENDED_HEADER if ($patch_line =~ m/^--- |^diff /);
3621
3622                         print format_extended_diff_header_line($patch_line, $diffinfo,
3623                                                                \%from, \%to);
3624                 }
3625                 print "</div>\n"; # class="diff extended_header"
3626
3627                 # from-file/to-file diff header
3628                 if (! $patch_line) {
3629                         print "</div>\n"; # class="patch"
3630                         last PATCH;
3631                 }
3632                 next PATCH if ($patch_line =~ m/^diff /);
3633                 #assert($patch_line =~ m/^---/) if DEBUG;
3634
3635                 my $last_patch_line = $patch_line;
3636                 $patch_line = <$fd>;
3637                 chomp $patch_line;
3638                 #assert($patch_line =~ m/^\+\+\+/) if DEBUG;
3639
3640                 print format_diff_from_to_header($last_patch_line, $patch_line,
3641                                                  $diffinfo, \%from, \%to,
3642                                                  @hash_parents);
3643
3644                 # the patch itself
3645         LINE:
3646                 while ($patch_line = <$fd>) {
3647                         chomp $patch_line;
3648
3649                         next PATCH if ($patch_line =~ m/^diff /);
3650
3651                         print format_diff_line($patch_line, \%from, \%to);
3652                 }
3653
3654         } continue {
3655                 print "</div>\n"; # class="patch"
3656         }
3657
3658         # for compact combined (--cc) format, with chunk and patch simpliciaction
3659         # patchset might be empty, but there might be unprocessed raw lines
3660         for (++$patch_idx if $patch_number > 0;
3661              $patch_idx < @$difftree;
3662              ++$patch_idx) {
3663                 # read and prepare patch information
3664                 $diffinfo = parsed_difftree_line($difftree->[$patch_idx]);
3665
3666                 # generate anchor for "patch" links in difftree / whatchanged part
3667                 print "<div class=\"patch\" id=\"patch". ($patch_idx+1) ."\">\n" .
3668                       format_diff_cc_simplified($diffinfo, @hash_parents) .
3669                       "</div>\n";  # class="patch"
3670
3671                 $patch_number++;
3672         }
3673
3674         if ($patch_number == 0) {
3675                 if (@hash_parents > 1) {
3676                         print "<div class=\"diff nodifferences\">Trivial merge</div>\n";
3677                 } else {
3678                         print "<div class=\"diff nodifferences\">No differences found</div>\n";
3679                 }
3680         }
3681
3682         print "</div>\n"; # class="patchset"
3683 }
3684
3685 # . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3686
3687 # fills project list info (age, description, owner, forks) for each
3688 # project in the list, removing invalid projects from returned list
3689 # NOTE: modifies $projlist, but does not remove entries from it
3690 sub fill_project_list_info {
3691         my ($projlist, $check_forks) = @_;
3692         my @projects;
3693
3694         my $show_ctags = gitweb_check_feature('ctags');
3695  PROJECT:
3696         foreach my $pr (@$projlist) {
3697                 my (@activity) = git_get_last_activity($pr->{'path'});
3698                 unless (@activity) {
3699                         next PROJECT;
3700                 }
3701                 ($pr->{'age'}, $pr->{'age_string'}) = @activity;
3702                 if (!defined $pr->{'descr'}) {
3703                         my $descr = git_get_project_description($pr->{'path'}) || "";
3704                         $descr = to_utf8($descr);
3705                         $pr->{'descr_long'} = $descr;
3706                         $pr->{'descr'} = chop_str($descr, $projects_list_description_width, 5);
3707                 }
3708                 if (!defined $pr->{'owner'}) {
3709                         $pr->{'owner'} = git_get_project_owner("$pr->{'path'}") || "";
3710                 }
3711                 if ($check_forks) {
3712                         my $pname = $pr->{'path'};
3713                         if (($pname =~ s/\.git$//) &&
3714                             ($pname !~ /\/$/) &&
3715                             (-d "$projectroot/$pname")) {
3716                                 $pr->{'forks'} = "-d $projectroot/$pname";
3717                         }       else {
3718                                 $pr->{'forks'} = 0;
3719                         }
3720                 }
3721                 $show_ctags and $pr->{'ctags'} = git_get_project_ctags($pr->{'path'});
3722                 push @projects, $pr;
3723         }
3724
3725         return @projects;
3726 }
3727
3728 # print 'sort by' <th> element, generating 'sort by $name' replay link
3729 # if that order is not selected
3730 sub print_sort_th {
3731         my ($name, $order, $header) = @_;
3732         $header ||= ucfirst($name);
3733
3734         if ($order eq $name) {
3735                 print "<th>$header</th>\n";
3736         } else {
3737                 print "<th>" .
3738                       $cgi->a({-href => href(-replay=>1, order=>$name),
3739                                -class => "header"}, $header) .
3740                       "</th>\n";
3741         }
3742 }
3743
3744 sub git_project_list_body {
3745         # actually uses global variable $project
3746         my ($projlist, $order, $from, $to, $extra, $no_header) = @_;
3747
3748         my ($check_forks) = gitweb_check_feature('forks');
3749         my @projects = fill_project_list_info($projlist, $check_forks);
3750
3751         $order ||= $default_projects_order;
3752         $from = 0 unless defined $from;
3753         $to = $#projects if (!defined $to || $#projects < $to);
3754
3755         my %order_info = (
3756                 project => { key => 'path', type => 'str' },
3757                 descr => { key => 'descr_long', type => 'str' },
3758                 owner => { key => 'owner', type => 'str' },
3759                 age => { key => 'age', type => 'num' }
3760         );
3761         my $oi = $order_info{$order};
3762         if ($oi->{'type'} eq 'str') {
3763                 @projects = sort {$a->{$oi->{'key'}} cmp $b->{$oi->{'key'}}} @projects;
3764         } else {
3765                 @projects = sort {$a->{$oi->{'key'}} <=> $b->{$oi->{'key'}}} @projects;
3766         }
3767
3768         my $show_ctags = gitweb_check_feature('ctags');
3769         if ($show_ctags) {
3770                 my %ctags;
3771                 foreach my $p (@projects) {
3772                         foreach my $ct (keys %{$p->{'ctags'}}) {
3773                                 $ctags{$ct} += $p->{'ctags'}->{$ct};
3774                         }
3775                 }
3776                 my $cloud = git_populate_project_tagcloud(\%ctags);
3777                 print git_show_project_tagcloud($cloud, 64);
3778         }
3779
3780         print "<table class=\"project_list\">\n";
3781         unless ($no_header) {
3782                 print "<tr>\n";
3783                 if ($check_forks) {
3784                         print "<th></th>\n";
3785                 }
3786                 print_sort_th('project', $order, 'Project');
3787                 print_sort_th('descr', $order, 'Description');
3788                 print_sort_th('owner', $order, 'Owner');
3789                 print_sort_th('age', $order, 'Last Change');
3790                 print "<th></th>\n" . # for links
3791                       "</tr>\n";
3792         }
3793         my $alternate = 1;
3794         my $tagfilter = $cgi->param('by_tag');
3795         for (my $i = $from; $i <= $to; $i++) {
3796                 my $pr = $projects[$i];
3797
3798                 next if $tagfilter and $show_ctags and not grep { lc $_ eq lc $tagfilter } keys %{$pr->{'ctags'}};
3799                 next if $searchtext and not $pr->{'path'} =~ /$searchtext/
3800                         and not $pr->{'descr_long'} =~ /$searchtext/;
3801                 # Weed out forks or non-matching entries of search
3802                 if ($check_forks) {
3803                         my $forkbase = $project; $forkbase ||= ''; $forkbase =~ s#\.git$#/#;
3804                         $forkbase="^$forkbase" if $forkbase;
3805                         next if not $searchtext and not $tagfilter and $show_ctags
3806                                 and $pr->{'path'} =~ m#$forkbase.*/.*#; # regexp-safe
3807                 }
3808
3809                 if ($alternate) {
3810                         print "<tr class=\"dark\">\n";
3811                 } else {
3812                         print "<tr class=\"light\">\n";
3813                 }
3814                 $alternate ^= 1;
3815                 if ($check_forks) {
3816                         print "<td>";
3817                         if ($pr->{'forks'}) {
3818                                 print "<!-- $pr->{'forks'} -->\n";
3819                                 print $cgi->a({-href => href(project=>$pr->{'path'}, action=>"forks")}, "+");
3820                         }
3821                         print "</td>\n";
3822                 }
3823                 print "<td>" . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary"),
3824                                         -class => "list"}, esc_html($pr->{'path'})) . "</td>\n" .
3825                       "<td>" . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary"),
3826                                         -class => "list", -title => $pr->{'descr_long'}},
3827                                         esc_html($pr->{'descr'})) . "</td>\n" .
3828                       "<td><i>" . chop_and_escape_str($pr->{'owner'}, 15) . "</i></td>\n";
3829                 print "<td class=\"". age_class($pr->{'age'}) . "\">" .
3830                       (defined $pr->{'age_string'} ? $pr->{'age_string'} : "No commits") . "</td>\n" .
3831                       "<td class=\"link\">" .
3832                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary")}, "summary")   . " | " .
3833                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"shortlog")}, "shortlog") . " | " .
3834                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"log")}, "log") . " | " .
3835                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"tree")}, "tree") .
3836                       ($pr->{'forks'} ? " | " . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"forks")}, "forks") : '') .
3837                       "</td>\n" .
3838                       "</tr>\n";
3839         }
3840         if (defined $extra) {
3841                 print "<tr>\n";
3842                 if ($check_forks) {
3843                         print "<td></td>\n";
3844                 }
3845                 print "<td colspan=\"5\">$extra</td>\n" .
3846                       "</tr>\n";
3847         }
3848         print "</table>\n";
3849 }
3850
3851 sub git_shortlog_body {
3852         # uses global variable $project
3853         my ($commitlist, $from, $to, $refs, $extra) = @_;
3854
3855         $from = 0 unless defined $from;
3856         $to = $#{$commitlist} if (!defined $to || $#{$commitlist} < $to);
3857
3858         print "<table class=\"shortlog\">\n";
3859         my $alternate = 1;
3860         for (my $i = $from; $i <= $to; $i++) {
3861                 my %co = %{$commitlist->[$i]};
3862                 my $commit = $co{'id'};
3863                 my $ref = format_ref_marker($refs, $commit);
3864                 if ($alternate) {
3865                         print "<tr class=\"dark\">\n";
3866                 } else {
3867                         print "<tr class=\"light\">\n";
3868                 }
3869                 $alternate ^= 1;
3870                 my $author = chop_and_escape_str($co{'author_name'}, 10);
3871                 # git_summary() used print "<td><i>$co{'age_string'}</i></td>\n" .
3872                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
3873                       "<td><i>" . $author . "</i></td>\n" .
3874                       "<td>";
3875                 print format_subject_html($co{'title'}, $co{'title_short'},
3876                                           href(action=>"commit", hash=>$commit), $ref);
3877                 print "</td>\n" .
3878                       "<td class=\"link\">" .
3879                       $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") . " | " .
3880                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") . " | " .
3881                       $cgi->a({-href => href(action=>"tree", hash=>$commit, hash_base=>$commit)}, "tree");
3882                 my $snapshot_links = format_snapshot_links($commit);
3883                 if (defined $snapshot_links) {
3884                         print " | " . $snapshot_links;
3885                 }
3886                 print "</td>\n" .
3887                       "</tr>\n";
3888         }
3889         if (defined $extra) {
3890                 print "<tr>\n" .
3891                       "<td colspan=\"4\">$extra</td>\n" .
3892                       "</tr>\n";
3893         }
3894         print "</table>\n";
3895 }
3896
3897 sub git_history_body {
3898         # Warning: assumes constant type (blob or tree) during history
3899         my ($commitlist, $from, $to, $refs, $hash_base, $ftype, $extra) = @_;
3900
3901         $from = 0 unless defined $from;
3902         $to = $#{$commitlist} unless (defined $to && $to <= $#{$commitlist});
3903
3904         print "<table class=\"history\">\n";
3905         my $alternate = 1;
3906         for (my $i = $from; $i <= $to; $i++) {
3907                 my %co = %{$commitlist->[$i]};
3908                 if (!%co) {
3909                         next;
3910                 }
3911                 my $commit = $co{'id'};
3912
3913                 my $ref = format_ref_marker($refs, $commit);
3914
3915                 if ($alternate) {
3916                         print "<tr class=\"dark\">\n";
3917                 } else {
3918                         print "<tr class=\"light\">\n";
3919                 }
3920                 $alternate ^= 1;
3921         # shortlog uses      chop_str($co{'author_name'}, 10)
3922                 my $author = chop_and_escape_str($co{'author_name'}, 15, 3);
3923                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
3924                       "<td><i>" . $author . "</i></td>\n" .
3925                       "<td>";
3926                 # originally git_history used chop_str($co{'title'}, 50)
3927                 print format_subject_html($co{'title'}, $co{'title_short'},
3928                                           href(action=>"commit", hash=>$commit), $ref);
3929                 print "</td>\n" .
3930                       "<td class=\"link\">" .
3931                       $cgi->a({-href => href(action=>$ftype, hash_base=>$commit, file_name=>$file_name)}, $ftype) . " | " .
3932                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff");
3933
3934                 if ($ftype eq 'blob') {
3935                         my $blob_current = git_get_hash_by_path($hash_base, $file_name);
3936                         my $blob_parent  = git_get_hash_by_path($commit, $file_name);
3937                         if (defined $blob_current && defined $blob_parent &&
3938                                         $blob_current ne $blob_parent) {
3939                                 print " | " .
3940                                         $cgi->a({-href => href(action=>"blobdiff",
3941                                                                hash=>$blob_current, hash_parent=>$blob_parent,
3942                                                                hash_base=>$hash_base, hash_parent_base=>$commit,
3943                                                                file_name=>$file_name)},
3944                                                 "diff to current");
3945                         }
3946                 }
3947                 print "</td>\n" .
3948                       "</tr>\n";
3949         }
3950         if (defined $extra) {
3951                 print "<tr>\n" .
3952                       "<td colspan=\"4\">$extra</td>\n" .
3953                       "</tr>\n";
3954         }
3955         print "</table>\n";
3956 }
3957
3958 sub git_tags_body {
3959         # uses global variable $project
3960         my ($taglist, $from, $to, $extra) = @_;
3961         $from = 0 unless defined $from;
3962         $to = $#{$taglist} if (!defined $to || $#{$taglist} < $to);
3963
3964         print "<table class=\"tags\">\n";
3965         my $alternate = 1;
3966         for (my $i = $from; $i <= $to; $i++) {
3967                 my $entry = $taglist->[$i];
3968                 my %tag = %$entry;
3969                 my $comment = $tag{'subject'};
3970                 my $comment_short;
3971                 if (defined $comment) {
3972                         $comment_short = chop_str($comment, 30, 5);
3973                 }
3974                 if ($alternate) {
3975                         print "<tr class=\"dark\">\n";
3976                 } else {
3977                         print "<tr class=\"light\">\n";
3978                 }
3979                 $alternate ^= 1;
3980                 if (defined $tag{'age'}) {
3981                         print "<td><i>$tag{'age'}</i></td>\n";
3982                 } else {
3983                         print "<td></td>\n";
3984                 }
3985                 print "<td>" .
3986                       $cgi->a({-href => href(action=>$tag{'reftype'}, hash=>$tag{'refid'}),
3987                                -class => "list name"}, esc_html($tag{'name'})) .
3988                       "</td>\n" .
3989                       "<td>";
3990                 if (defined $comment) {
3991                         print format_subject_html($comment, $comment_short,
3992                                                   href(action=>"tag", hash=>$tag{'id'}));
3993                 }
3994                 print "</td>\n" .
3995                       "<td class=\"selflink\">";
3996                 if ($tag{'type'} eq "tag") {
3997                         print $cgi->a({-href => href(action=>"tag", hash=>$tag{'id'})}, "tag");
3998                 } else {
3999                         print "&nbsp;";
4000                 }
4001                 print "</td>\n" .
4002                       "<td class=\"link\">" . " | " .
4003                       $cgi->a({-href => href(action=>$tag{'reftype'}, hash=>$tag{'refid'})}, $tag{'reftype'});
4004                 if ($tag{'reftype'} eq "commit") {
4005                         print " | " . $cgi->a({-href => href(action=>"shortlog", hash=>$tag{'fullname'})}, "shortlog") .
4006                               " | " . $cgi->a({-href => href(action=>"log", hash=>$tag{'fullname'})}, "log");
4007                 } elsif ($tag{'reftype'} eq "blob") {
4008                         print " | " . $cgi->a({-href => href(action=>"blob_plain", hash=>$tag{'refid'})}, "raw");
4009                 }
4010                 print "</td>\n" .
4011                       "</tr>";
4012         }
4013         if (defined $extra) {
4014                 print "<tr>\n" .
4015                       "<td colspan=\"5\">$extra</td>\n" .
4016                       "</tr>\n";
4017         }
4018         print "</table>\n";
4019 }
4020
4021 sub git_heads_body {
4022         # uses global variable $project
4023         my ($headlist, $head, $from, $to, $extra) = @_;
4024         $from = 0 unless defined $from;
4025         $to = $#{$headlist} if (!defined $to || $#{$headlist} < $to);
4026
4027         print "<table class=\"heads\">\n";
4028         my $alternate = 1;
4029         for (my $i = $from; $i <= $to; $i++) {
4030                 my $entry = $headlist->[$i];
4031                 my %ref = %$entry;
4032                 my $curr = $ref{'id'} eq $head;
4033                 if ($alternate) {
4034                         print "<tr class=\"dark\">\n";
4035                 } else {
4036                         print "<tr class=\"light\">\n";
4037                 }
4038                 $alternate ^= 1;
4039                 print "<td><i>$ref{'age'}</i></td>\n" .
4040                       ($curr ? "<td class=\"current_head\">" : "<td>") .
4041                       $cgi->a({-href => href(action=>"shortlog", hash=>$ref{'fullname'}),
4042                                -class => "list name"},esc_html($ref{'name'})) .
4043                       "</td>\n" .
4044                       "<td class=\"link\">" .
4045                       $cgi->a({-href => href(action=>"shortlog", hash=>$ref{'fullname'})}, "shortlog") . " | " .
4046                       $cgi->a({-href => href(action=>"log", hash=>$ref{'fullname'})}, "log") . " | " .
4047                       $cgi->a({-href => href(action=>"tree", hash=>$ref{'fullname'}, hash_base=>$ref{'name'})}, "tree") .
4048                       "</td>\n" .
4049                       "</tr>";
4050         }
4051         if (defined $extra) {
4052                 print "<tr>\n" .
4053                       "<td colspan=\"3\">$extra</td>\n" .
4054                       "</tr>\n";
4055         }
4056         print "</table>\n";
4057 }
4058
4059 sub git_search_grep_body {
4060         my ($commitlist, $from, $to, $extra) = @_;
4061         $from = 0 unless defined $from;
4062         $to = $#{$commitlist} if (!defined $to || $#{$commitlist} < $to);
4063
4064         print "<table class=\"commit_search\">\n";
4065         my $alternate = 1;
4066         for (my $i = $from; $i <= $to; $i++) {
4067                 my %co = %{$commitlist->[$i]};
4068                 if (!%co) {
4069                         next;
4070                 }
4071                 my $commit = $co{'id'};
4072                 if ($alternate) {
4073                         print "<tr class=\"dark\">\n";
4074                 } else {
4075                         print "<tr class=\"light\">\n";
4076                 }
4077                 $alternate ^= 1;
4078                 my $author = chop_and_escape_str($co{'author_name'}, 15, 5);
4079                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
4080                       "<td><i>" . $author . "</i></td>\n" .
4081                       "<td>" .
4082                       $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}),
4083                                -class => "list subject"},
4084                               chop_and_escape_str($co{'title'}, 50) . "<br/>");
4085                 my $comment = $co{'comment'};
4086                 foreach my $line (@$comment) {
4087                         if ($line =~ m/^(.*?)($search_regexp)(.*)$/i) {
4088                                 my ($lead, $match, $trail) = ($1, $2, $3);
4089                                 $match = chop_str($match, 70, 5, 'center');
4090                                 my $contextlen = int((80 - length($match))/2);
4091                                 $contextlen = 30 if ($contextlen > 30);
4092                                 $lead  = chop_str($lead,  $contextlen, 10, 'left');
4093                                 $trail = chop_str($trail, $contextlen, 10, 'right');
4094
4095                                 $lead  = esc_html($lead);
4096                                 $match = esc_html($match);
4097                                 $trail = esc_html($trail);
4098
4099                                 print "$lead<span class=\"match\">$match</span>$trail<br />";
4100                         }
4101                 }
4102                 print "</td>\n" .
4103                       "<td class=\"link\">" .
4104                       $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})}, "commit") .
4105                       " | " .
4106                       $cgi->a({-href => href(action=>"commitdiff", hash=>$co{'id'})}, "commitdiff") .
4107                       " | " .
4108                       $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$co{'id'})}, "tree");
4109                 print "</td>\n" .
4110                       "</tr>\n";
4111         }
4112         if (defined $extra) {
4113                 print "<tr>\n" .
4114                       "<td colspan=\"3\">$extra</td>\n" .
4115                       "</tr>\n";
4116         }
4117         print "</table>\n";
4118 }
4119
4120 ## ======================================================================
4121 ## ======================================================================
4122 ## actions
4123
4124 sub git_project_list {
4125         my $order = $cgi->param('o');
4126         if (defined $order && $order !~ m/none|project|descr|owner|age/) {
4127                 die_error(400, "Unknown order parameter");
4128         }
4129
4130         my @list = git_get_projects_list();
4131         if (!@list) {
4132                 die_error(404, "No projects found");
4133         }
4134
4135         git_header_html();
4136         if (-f $home_text) {
4137                 print "<div class=\"index_include\">\n";
4138                 open (my $fd, $home_text);
4139                 print <$fd>;
4140                 close $fd;
4141                 print "</div>\n";
4142         }
4143         print $cgi->startform(-method => "get") .
4144               "<p class=\"projsearch\">Search:\n" .
4145               $cgi->textfield(-name => "s", -value => $searchtext) . "\n" .
4146               "</p>" .
4147               $cgi->end_form() . "\n";
4148         git_project_list_body(\@list, $order);
4149         git_footer_html();
4150 }
4151
4152 sub git_forks {
4153         my $order = $cgi->param('o');
4154         if (defined $order && $order !~ m/none|project|descr|owner|age/) {
4155                 die_error(400, "Unknown order parameter");
4156         }
4157
4158         my @list = git_get_projects_list($project);
4159         if (!@list) {
4160                 die_error(404, "No forks found");
4161         }
4162
4163         git_header_html();
4164         git_print_page_nav('','');
4165         git_print_header_div('summary', "$project forks");
4166         git_project_list_body(\@list, $order);
4167         git_footer_html();
4168 }
4169
4170 sub git_project_index {
4171         my @projects = git_get_projects_list($project);
4172
4173         print $cgi->header(
4174                 -type => 'text/plain',
4175                 -charset => 'utf-8',
4176                 -content_disposition => 'inline; filename="index.aux"');
4177
4178         foreach my $pr (@projects) {
4179                 if (!exists $pr->{'owner'}) {
4180                         $pr->{'owner'} = git_get_project_owner("$pr->{'path'}");
4181                 }
4182
4183                 my ($path, $owner) = ($pr->{'path'}, $pr->{'owner'});
4184                 # quote as in CGI::Util::encode, but keep the slash, and use '+' for ' '
4185                 $path  =~ s/([^a-zA-Z0-9_.\-\/ ])/sprintf("%%%02X", ord($1))/eg;
4186                 $owner =~ s/([^a-zA-Z0-9_.\-\/ ])/sprintf("%%%02X", ord($1))/eg;
4187                 $path  =~ s/ /\+/g;
4188                 $owner =~ s/ /\+/g;
4189
4190                 print "$path $owner\n";
4191         }
4192 }
4193
4194 sub git_summary {
4195         my $descr = git_get_project_description($project) || "none";
4196         my %co = parse_commit("HEAD");
4197         my %cd = %co ? parse_date($co{'committer_epoch'}, $co{'committer_tz'}) : ();
4198         my $head = $co{'id'};
4199
4200         my $owner = git_get_project_owner($project);
4201
4202         my $refs = git_get_references();
4203         # These get_*_list functions return one more to allow us to see if
4204         # there are more ...
4205         my @taglist  = git_get_tags_list(16);
4206         my @headlist = git_get_heads_list(16);
4207         my @forklist;
4208         my ($check_forks) = gitweb_check_feature('forks');
4209
4210         if ($check_forks) {
4211                 @forklist = git_get_projects_list($project);
4212         }
4213
4214         git_header_html();
4215         git_print_page_nav('summary','', $head);
4216
4217         print "<div class=\"title\">&nbsp;</div>\n";
4218         print "<table class=\"projects_list\">\n" .
4219               "<tr id=\"metadata_desc\"><td>description</td><td>" . esc_html($descr) . "</td></tr>\n" .
4220               "<tr id=\"metadata_owner\"><td>owner</td><td>" . esc_html($owner) . "</td></tr>\n";
4221         if (defined $cd{'rfc2822'}) {
4222                 print "<tr id=\"metadata_lchange\"><td>last change</td><td>$cd{'rfc2822'}</td></tr>\n";
4223         }
4224
4225         # use per project git URL list in $projectroot/$project/cloneurl
4226         # or make project git URL from git base URL and project name
4227         my $url_tag = "URL";
4228         my @url_list = git_get_project_url_list($project);
4229         @url_list = map { "$_/$project" } @git_base_url_list unless @url_list;
4230         foreach my $git_url (@url_list) {
4231                 next unless $git_url;
4232                 print "<tr class=\"metadata_url\"><td>$url_tag</td><td>$git_url</td></tr>\n";
4233                 $url_tag = "";
4234         }
4235
4236         # Tag cloud
4237         my $show_ctags = (gitweb_check_feature('ctags'))[0];
4238         if ($show_ctags) {
4239                 my $ctags = git_get_project_ctags($project);
4240                 my $cloud = git_populate_project_tagcloud($ctags);
4241                 print "<tr id=\"metadata_ctags\"><td>Content tags:<br />";
4242                 print "</td>\n<td>" unless %$ctags;
4243                 print "<form action=\"$show_ctags\" method=\"post\"><input type=\"hidden\" name=\"p\" value=\"$project\" />Add: <input type=\"text\" name=\"t\" size=\"8\" /></form>";
4244                 print "</td>\n<td>" if %$ctags;
4245                 print git_show_project_tagcloud($cloud, 48);
4246                 print "</td></tr>";
4247         }
4248
4249         print "</table>\n";
4250
4251         if (-s "$projectroot/$project/README.html") {
4252                 if (open my $fd, "$projectroot/$project/README.html") {
4253                         print "<div class=\"title\">readme</div>\n" .
4254                               "<div class=\"readme\">\n";
4255                         print $_ while (<$fd>);
4256                         print "\n</div>\n"; # class="readme"
4257                         close $fd;
4258                 }
4259         }
4260
4261         # we need to request one more than 16 (0..15) to check if
4262         # those 16 are all
4263         my @commitlist = $head ? parse_commits($head, 17) : ();
4264         if (@commitlist) {
4265                 git_print_header_div('shortlog');
4266                 git_shortlog_body(\@commitlist, 0, 15, $refs,
4267                                   $#commitlist <=  15 ? undef :
4268                                   $cgi->a({-href => href(action=>"shortlog")}, "..."));
4269         }
4270
4271         if (@taglist) {
4272                 git_print_header_div('tags');
4273                 git_tags_body(\@taglist, 0, 15,
4274                               $#taglist <=  15 ? undef :
4275                               $cgi->a({-href => href(action=>"tags")}, "..."));
4276         }
4277
4278         if (@headlist) {
4279                 git_print_header_div('heads');
4280                 git_heads_body(\@headlist, $head, 0, 15,
4281                                $#headlist <= 15 ? undef :
4282                                $cgi->a({-href => href(action=>"heads")}, "..."));
4283         }
4284
4285         if (@forklist) {
4286                 git_print_header_div('forks');
4287                 git_project_list_body(\@forklist, 'age', 0, 15,
4288                                       $#forklist <= 15 ? undef :
4289                                       $cgi->a({-href => href(action=>"forks")}, "..."),
4290                                       'no_header');
4291         }
4292
4293         git_footer_html();
4294 }
4295
4296 sub git_tag {
4297         my $head = git_get_head_hash($project);
4298         git_header_html();
4299         git_print_page_nav('','', $head,undef,$head);
4300         my %tag = parse_tag($hash);
4301
4302         if (! %tag) {
4303                 die_error(404, "Unknown tag object");
4304         }
4305
4306         git_print_header_div('commit', esc_html($tag{'name'}), $hash);
4307         print "<div class=\"title_text\">\n" .
4308               "<table class=\"object_header\">\n" .
4309               "<tr>\n" .
4310               "<td>object</td>\n" .
4311               "<td>" . $cgi->a({-class => "list", -href => href(action=>$tag{'type'}, hash=>$tag{'object'})},
4312                                $tag{'object'}) . "</td>\n" .
4313               "<td class=\"link\">" . $cgi->a({-href => href(action=>$tag{'type'}, hash=>$tag{'object'})},
4314                                               $tag{'type'}) . "</td>\n" .
4315               "</tr>\n";
4316         if (defined($tag{'author'})) {
4317                 my %ad = parse_date($tag{'epoch'}, $tag{'tz'});
4318                 print "<tr><td>author</td><td>" . esc_html($tag{'author'}) . "</td></tr>\n";
4319                 print "<tr><td></td><td>" . $ad{'rfc2822'} .
4320                         sprintf(" (%02d:%02d %s)", $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'}) .
4321                         "</td></tr>\n";
4322         }
4323         print "</table>\n\n" .
4324               "</div>\n";
4325         print "<div class=\"page_body\">";
4326         my $comment = $tag{'comment'};
4327         foreach my $line (@$comment) {
4328                 chomp $line;
4329                 print esc_html($line, -nbsp=>1) . "<br/>\n";
4330         }
4331         print "</div>\n";
4332         git_footer_html();
4333 }
4334
4335 sub git_blame {
4336         my $fd;
4337         my $ftype;
4338
4339         gitweb_check_feature('blame')
4340             or die_error(403, "Blame view not allowed");
4341
4342         die_error(400, "No file name given") unless $file_name;
4343         $hash_base ||= git_get_head_hash($project);
4344         die_error(404, "Couldn't find base commit") unless ($hash_base);
4345         my %co = parse_commit($hash_base)
4346                 or die_error(404, "Commit not found");
4347         if (!defined $hash) {
4348                 $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
4349                         or die_error(404, "Error looking up file");
4350         }
4351         $ftype = git_get_type($hash);
4352         if ($ftype !~ "blob") {
4353                 die_error(400, "Object is not a blob");
4354         }
4355         open ($fd, "-|", git_cmd(), "blame", '-p', '--',
4356               $file_name, $hash_base)
4357                 or die_error(500, "Open git-blame failed");
4358         git_header_html();
4359         my $formats_nav =
4360                 $cgi->a({-href => href(action=>"blob", -replay=>1)},
4361                         "blob") .
4362                 " | " .
4363                 $cgi->a({-href => href(action=>"history", -replay=>1)},
4364                         "history") .
4365                 " | " .
4366                 $cgi->a({-href => href(action=>"blame", file_name=>$file_name)},
4367                         "HEAD");
4368         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
4369         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
4370         git_print_page_path($file_name, $ftype, $hash_base);
4371         my @rev_color = (qw(light2 dark2));
4372         my $num_colors = scalar(@rev_color);
4373         my $current_color = 0;
4374         my $last_rev;
4375         print <<HTML;
4376 <div class="page_body">
4377 <table class="blame">
4378 <tr><th>Commit</th><th>Line</th><th>Data</th></tr>
4379 HTML
4380         my %metainfo = ();
4381         while (1) {
4382                 $_ = <$fd>;
4383                 last unless defined $_;
4384                 my ($full_rev, $orig_lineno, $lineno, $group_size) =
4385                     /^([0-9a-f]{40}) (\d+) (\d+)(?: (\d+))?$/;
4386                 if (!exists $metainfo{$full_rev}) {
4387                         $metainfo{$full_rev} = {};
4388                 }
4389                 my $meta = $metainfo{$full_rev};
4390                 while (<$fd>) {
4391                         last if (s/^\t//);
4392                         if (/^(\S+) (.*)$/) {
4393                                 $meta->{$1} = $2;
4394                         }
4395                 }
4396                 my $data = $_;
4397                 chomp $data;
4398                 my $rev = substr($full_rev, 0, 8);
4399                 my $author = $meta->{'author'};
4400                 my %date = parse_date($meta->{'author-time'},
4401                                       $meta->{'author-tz'});
4402                 my $date = $date{'iso-tz'};
4403                 if ($group_size) {
4404                         $current_color = ++$current_color % $num_colors;
4405                 }
4406                 print "<tr class=\"$rev_color[$current_color]\">\n";
4407                 if ($group_size) {
4408                         print "<td class=\"sha1\"";
4409                         print " title=\"". esc_html($author) . ", $date\"";
4410                         print " rowspan=\"$group_size\"" if ($group_size > 1);
4411                         print ">";
4412                         print $cgi->a({-href => href(action=>"commit",
4413                                                      hash=>$full_rev,
4414                                                      file_name=>$file_name)},
4415                                       esc_html($rev));
4416                         print "</td>\n";
4417                 }
4418                 open (my $dd, "-|", git_cmd(), "rev-parse", "$full_rev^")
4419                         or die_error(500, "Open git-rev-parse failed");
4420                 my $parent_commit = <$dd>;
4421                 close $dd;
4422                 chomp($parent_commit);
4423                 my $blamed = href(action => 'blame',
4424                                   file_name => $meta->{'filename'},
4425                                   hash_base => $parent_commit);
4426                 print "<td class=\"linenr\">";
4427                 print $cgi->a({ -href => "$blamed#l$orig_lineno",
4428                                 -id => "l$lineno",
4429                                 -class => "linenr" },
4430                               esc_html($lineno));
4431                 print "</td>";
4432                 print "<td class=\"pre\">" . esc_html($data) . "</td>\n";
4433                 print "</tr>\n";
4434         }
4435         print "</table>\n";
4436         print "</div>";
4437         close $fd
4438                 or print "Reading blob failed\n";
4439         git_footer_html();
4440 }
4441
4442 sub git_tags {
4443         my $head = git_get_head_hash($project);
4444         git_header_html();
4445         git_print_page_nav('','', $head,undef,$head);
4446         git_print_header_div('summary', $project);
4447
4448         my @tagslist = git_get_tags_list();
4449         if (@tagslist) {
4450                 git_tags_body(\@tagslist);
4451         }
4452         git_footer_html();
4453 }
4454
4455 sub git_heads {
4456         my $head = git_get_head_hash($project);
4457         git_header_html();
4458         git_print_page_nav('','', $head,undef,$head);
4459         git_print_header_div('summary', $project);
4460
4461         my @headslist = git_get_heads_list();
4462         if (@headslist) {
4463                 git_heads_body(\@headslist, $head);
4464         }
4465         git_footer_html();
4466 }
4467
4468 sub git_blob_plain {
4469         my $type = shift;
4470         my $expires;
4471
4472         if (!defined $hash) {
4473                 if (defined $file_name) {
4474                         my $base = $hash_base || git_get_head_hash($project);
4475                         $hash = git_get_hash_by_path($base, $file_name, "blob")
4476                                 or die_error(404, "Cannot find file");
4477                 } else {
4478                         die_error(400, "No file name defined");
4479                 }
4480         } elsif ($hash =~ m/^[0-9a-fA-F]{40}$/) {
4481                 # blobs defined by non-textual hash id's can be cached
4482                 $expires = "+1d";
4483         }
4484
4485         open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
4486                 or die_error(500, "Open git-cat-file blob '$hash' failed");
4487
4488         # content-type (can include charset)
4489         $type = blob_contenttype($fd, $file_name, $type);
4490
4491         # "save as" filename, even when no $file_name is given
4492         my $save_as = "$hash";
4493         if (defined $file_name) {
4494                 $save_as = $file_name;
4495         } elsif ($type =~ m/^text\//) {
4496                 $save_as .= '.txt';
4497         }
4498
4499         print $cgi->header(
4500                 -type => $type,
4501                 -expires => $expires,
4502                 -content_disposition => 'inline; filename="' . $save_as . '"');
4503         undef $/;
4504         binmode STDOUT, ':raw';
4505         print <$fd>;
4506         binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
4507         $/ = "\n";
4508         close $fd;
4509 }
4510
4511 sub git_blob {
4512         my $expires;
4513
4514         if (!defined $hash) {
4515                 if (defined $file_name) {
4516                         my $base = $hash_base || git_get_head_hash($project);
4517                         $hash = git_get_hash_by_path($base, $file_name, "blob")
4518                                 or die_error(404, "Cannot find file");
4519                 } else {
4520                         die_error(400, "No file name defined");
4521                 }
4522         } elsif ($hash =~ m/^[0-9a-fA-F]{40}$/) {
4523                 # blobs defined by non-textual hash id's can be cached
4524                 $expires = "+1d";
4525         }
4526
4527         my ($have_blame) = gitweb_check_feature('blame');
4528         open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
4529                 or die_error(500, "Couldn't cat $file_name, $hash");
4530         my $mimetype = blob_mimetype($fd, $file_name);
4531         if ($mimetype !~ m!^(?:text/|image/(?:gif|png|jpeg)$)! && -B $fd) {
4532                 close $fd;
4533                 return git_blob_plain($mimetype);
4534         }
4535         # we can have blame only for text/* mimetype
4536         $have_blame &&= ($mimetype =~ m!^text/!);
4537
4538         git_header_html(undef, $expires);
4539         my $formats_nav = '';
4540         if (defined $hash_base && (my %co = parse_commit($hash_base))) {
4541                 if (defined $file_name) {
4542                         if ($have_blame) {
4543                                 $formats_nav .=
4544                                         $cgi->a({-href => href(action=>"blame", -replay=>1)},
4545                                                 "blame") .
4546                                         " | ";
4547                         }
4548                         $formats_nav .=
4549                                 $cgi->a({-href => href(action=>"history", -replay=>1)},
4550                                         "history") .
4551                                 " | " .
4552                                 $cgi->a({-href => href(action=>"blob_plain", -replay=>1)},
4553                                         "raw") .
4554                                 " | " .
4555                                 $cgi->a({-href => href(action=>"blob",
4556                                                        hash_base=>"HEAD", file_name=>$file_name)},
4557                                         "HEAD");
4558                 } else {
4559                         $formats_nav .=
4560                                 $cgi->a({-href => href(action=>"blob_plain", -replay=>1)},
4561                                         "raw");
4562                 }
4563                 git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
4564                 git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
4565         } else {
4566                 print "<div class=\"page_nav\">\n" .
4567                       "<br/><br/></div>\n" .
4568                       "<div class=\"title\">$hash</div>\n";
4569         }
4570         git_print_page_path($file_name, "blob", $hash_base);
4571         print "<div class=\"page_body\">\n";
4572         if ($mimetype =~ m!^image/!) {
4573                 print qq!<img type="$mimetype"!;
4574                 if ($file_name) {
4575                         print qq! alt="$file_name" title="$file_name"!;
4576                 }
4577                 print qq! src="! .
4578                       href(action=>"blob_plain", hash=>$hash,
4579                            hash_base=>$hash_base, file_name=>$file_name) .
4580                       qq!" />\n!;
4581         } else {
4582                 my $nr;
4583                 while (my $line = <$fd>) {
4584                         chomp $line;
4585                         $nr++;
4586                         $line = untabify($line);
4587                         printf "<div class=\"pre\"><a id=\"l%i\" href=\"#l%i\" class=\"linenr\">%4i</a> %s</div>\n",
4588                                $nr, $nr, $nr, esc_html($line, -nbsp=>1);
4589                 }
4590         }
4591         close $fd
4592                 or print "Reading blob failed.\n";
4593         print "</div>";
4594         git_footer_html();
4595 }
4596
4597 sub git_tree {
4598         if (!defined $hash_base) {
4599                 $hash_base = "HEAD";
4600         }
4601         if (!defined $hash) {
4602                 if (defined $file_name) {
4603                         $hash = git_get_hash_by_path($hash_base, $file_name, "tree");
4604                 } else {
4605                         $hash = $hash_base;
4606                 }
4607         }
4608         die_error(404, "No such tree") unless defined($hash);
4609         $/ = "\0";
4610         open my $fd, "-|", git_cmd(), "ls-tree", '-z', $hash
4611                 or die_error(500, "Open git-ls-tree failed");
4612         my @entries = map { chomp; $_ } <$fd>;
4613         close $fd or die_error(404, "Reading tree failed");
4614         $/ = "\n";
4615
4616         my $refs = git_get_references();
4617         my $ref = format_ref_marker($refs, $hash_base);
4618         git_header_html();
4619         my $basedir = '';
4620         my ($have_blame) = gitweb_check_feature('blame');
4621         if (defined $hash_base && (my %co = parse_commit($hash_base))) {
4622                 my @views_nav = ();
4623                 if (defined $file_name) {
4624                         push @views_nav,
4625                                 $cgi->a({-href => href(action=>"history", -replay=>1)},
4626                                         "history"),
4627                                 $cgi->a({-href => href(action=>"tree",
4628                                                        hash_base=>"HEAD", file_name=>$file_name)},
4629                                         "HEAD"),
4630                 }
4631                 my $snapshot_links = format_snapshot_links($hash);
4632                 if (defined $snapshot_links) {
4633                         # FIXME: Should be available when we have no hash base as well.
4634                         push @views_nav, $snapshot_links;
4635                 }
4636                 git_print_page_nav('tree','', $hash_base, undef, undef, join(' | ', @views_nav));
4637                 git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash_base);
4638         } else {
4639                 undef $hash_base;
4640                 print "<div class=\"page_nav\">\n";
4641                 print "<br/><br/></div>\n";
4642                 print "<div class=\"title\">$hash</div>\n";
4643         }
4644         if (defined $file_name) {
4645                 $basedir = $file_name;
4646                 if ($basedir ne '' && substr($basedir, -1) ne '/') {
4647                         $basedir .= '/';
4648                 }
4649                 git_print_page_path($file_name, 'tree', $hash_base);
4650         }
4651         print "<div class=\"page_body\">\n";
4652         print "<table class=\"tree\">\n";
4653         my $alternate = 1;
4654         # '..' (top directory) link if possible
4655         if (defined $hash_base &&
4656             defined $file_name && $file_name =~ m![^/]+$!) {
4657                 if ($alternate) {
4658                         print "<tr class=\"dark\">\n";
4659                 } else {
4660                         print "<tr class=\"light\">\n";
4661                 }
4662                 $alternate ^= 1;
4663
4664                 my $up = $file_name;
4665                 $up =~ s!/?[^/]+$!!;
4666                 undef $up unless $up;
4667                 # based on git_print_tree_entry
4668                 print '<td class="mode">' . mode_str('040000') . "</td>\n";
4669                 print '<td class="list">';
4670                 print $cgi->a({-href => href(action=>"tree", hash_base=>$hash_base,
4671                                              file_name=>$up)},
4672                               "..");
4673                 print "</td>\n";
4674                 print "<td class=\"link\"></td>\n";
4675
4676                 print "</tr>\n";
4677         }
4678         foreach my $line (@entries) {
4679                 my %t = parse_ls_tree_line($line, -z => 1);
4680
4681                 if ($alternate) {
4682                         print "<tr class=\"dark\">\n";
4683                 } else {
4684                         print "<tr class=\"light\">\n";
4685                 }
4686                 $alternate ^= 1;
4687
4688                 git_print_tree_entry(\%t, $basedir, $hash_base, $have_blame);
4689
4690                 print "</tr>\n";
4691         }
4692         print "</table>\n" .
4693               "</div>";
4694         git_footer_html();
4695 }
4696
4697 sub git_snapshot {
4698         my @supported_fmts = gitweb_check_feature('snapshot');
4699         @supported_fmts = filter_snapshot_fmts(@supported_fmts);
4700
4701         my $format = $cgi->param('sf');
4702         if (!@supported_fmts) {
4703                 die_error(403, "Snapshots not allowed");
4704         }
4705         # default to first supported snapshot format
4706         $format ||= $supported_fmts[0];
4707         if ($format !~ m/^[a-z0-9]+$/) {
4708                 die_error(400, "Invalid snapshot format parameter");
4709         } elsif (!exists($known_snapshot_formats{$format})) {
4710                 die_error(400, "Unknown snapshot format");
4711         } elsif (!grep($_ eq $format, @supported_fmts)) {
4712                 die_error(403, "Unsupported snapshot format");
4713         }
4714
4715         if (!defined $hash) {
4716                 $hash = git_get_head_hash($project);
4717         }
4718
4719         my $name = $project;
4720         $name =~ s,([^/])/*\.git$,$1,;
4721         $name = basename($name);
4722         my $filename = to_utf8($name);
4723         $name =~ s/\047/\047\\\047\047/g;
4724         my $cmd;
4725         $filename .= "-$hash$known_snapshot_formats{$format}{'suffix'}";
4726         $cmd = quote_command(
4727                 git_cmd(), 'archive',
4728                 "--format=$known_snapshot_formats{$format}{'format'}",
4729                 "--prefix=$name/", $hash);
4730         if (exists $known_snapshot_formats{$format}{'compressor'}) {
4731                 $cmd .= ' | ' . quote_command(@{$known_snapshot_formats{$format}{'compressor'}});
4732         }
4733
4734         print $cgi->header(
4735                 -type => $known_snapshot_formats{$format}{'type'},
4736                 -content_disposition => 'inline; filename="' . "$filename" . '"',
4737                 -status => '200 OK');
4738
4739         open my $fd, "-|", $cmd
4740                 or die_error(500, "Execute git-archive failed");
4741         binmode STDOUT, ':raw';
4742         print <$fd>;
4743         binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
4744         close $fd;
4745 }
4746
4747 sub git_log {
4748         my $head = git_get_head_hash($project);
4749         if (!defined $hash) {
4750                 $hash = $head;
4751         }
4752         if (!defined $page) {
4753                 $page = 0;
4754         }
4755         my $refs = git_get_references();
4756
4757         my @commitlist = parse_commits($hash, 101, (100 * $page));
4758
4759         my $paging_nav = format_paging_nav('log', $hash, $head, $page, $#commitlist >= 100);
4760
4761         git_header_html();
4762         git_print_page_nav('log','', $hash,undef,undef, $paging_nav);
4763
4764         if (!@commitlist) {
4765                 my %co = parse_commit($hash);
4766
4767                 git_print_header_div('summary', $project);
4768                 print "<div class=\"page_body\"> Last change $co{'age_string'}.<br/><br/></div>\n";
4769         }
4770         my $to = ($#commitlist >= 99) ? (99) : ($#commitlist);
4771         for (my $i = 0; $i <= $to; $i++) {
4772                 my %co = %{$commitlist[$i]};
4773                 next if !%co;
4774                 my $commit = $co{'id'};
4775                 my $ref = format_ref_marker($refs, $commit);
4776                 my %ad = parse_date($co{'author_epoch'});
4777                 git_print_header_div('commit',
4778                                "<span class=\"age\">$co{'age_string'}</span>" .
4779                                esc_html($co{'title'}) . $ref,
4780                                $commit);
4781                 print "<div class=\"title_text\">\n" .
4782                       "<div class=\"log_link\">\n" .
4783                       $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") .
4784                       " | " .
4785                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") .
4786                       " | " .
4787                       $cgi->a({-href => href(action=>"tree", hash=>$commit, hash_base=>$commit)}, "tree") .
4788                       "<br/>\n" .
4789                       "</div>\n" .
4790                       "<i>" . esc_html($co{'author_name'}) .  " [$ad{'rfc2822'}]</i><br/>\n" .
4791                       "</div>\n";
4792
4793                 print "<div class=\"log_body\">\n";
4794                 git_print_log($co{'comment'}, -final_empty_line=> 1);
4795                 print "</div>\n";
4796         }
4797         if ($#commitlist >= 100) {
4798                 print "<div class=\"page_nav\">\n";
4799                 print $cgi->a({-href => href(-replay=>1, page=>$page+1),
4800                                -accesskey => "n", -title => "Alt-n"}, "next");
4801                 print "</div>\n";
4802         }
4803         git_footer_html();
4804 }
4805
4806 sub git_commit {
4807         $hash ||= $hash_base || "HEAD";
4808         my %co = parse_commit($hash)
4809             or die_error(404, "Unknown commit object");
4810         my %ad = parse_date($co{'author_epoch'}, $co{'author_tz'});
4811         my %cd = parse_date($co{'committer_epoch'}, $co{'committer_tz'});
4812
4813         my $parent  = $co{'parent'};
4814         my $parents = $co{'parents'}; # listref
4815
4816         # we need to prepare $formats_nav before any parameter munging
4817         my $formats_nav;
4818         if (!defined $parent) {
4819                 # --root commitdiff
4820                 $formats_nav .= '(initial)';
4821         } elsif (@$parents == 1) {
4822                 # single parent commit
4823                 $formats_nav .=
4824                         '(parent: ' .
4825                         $cgi->a({-href => href(action=>"commit",
4826                                                hash=>$parent)},
4827                                 esc_html(substr($parent, 0, 7))) .
4828                         ')';
4829         } else {
4830                 # merge commit
4831                 $formats_nav .=
4832                         '(merge: ' .
4833                         join(' ', map {
4834                                 $cgi->a({-href => href(action=>"commit",
4835                                                        hash=>$_)},
4836                                         esc_html(substr($_, 0, 7)));
4837                         } @$parents ) .
4838                         ')';
4839         }
4840
4841         if (!defined $parent) {
4842                 $parent = "--root";
4843         }
4844         my @difftree;
4845         open my $fd, "-|", git_cmd(), "diff-tree", '-r', "--no-commit-id",
4846                 @diff_opts,
4847                 (@$parents <= 1 ? $parent : '-c'),
4848                 $hash, "--"
4849                 or die_error(500, "Open git-diff-tree failed");
4850         @difftree = map { chomp; $_ } <$fd>;
4851         close $fd or die_error(404, "Reading git-diff-tree failed");
4852
4853         # non-textual hash id's can be cached
4854         my $expires;
4855         if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
4856                 $expires = "+1d";
4857         }
4858         my $refs = git_get_references();
4859         my $ref = format_ref_marker($refs, $co{'id'});
4860
4861         git_header_html(undef, $expires);
4862         git_print_page_nav('commit', '',
4863                            $hash, $co{'tree'}, $hash,
4864                            $formats_nav);
4865
4866         if (defined $co{'parent'}) {
4867                 git_print_header_div('commitdiff', esc_html($co{'title'}) . $ref, $hash);
4868         } else {
4869                 git_print_header_div('tree', esc_html($co{'title'}) . $ref, $co{'tree'}, $hash);
4870         }
4871         print "<div class=\"title_text\">\n" .
4872               "<table class=\"object_header\">\n";
4873         print "<tr><td>author</td><td>" . esc_html($co{'author'}) . "</td></tr>\n".
4874               "<tr>" .
4875               "<td></td><td> $ad{'rfc2822'}";
4876         if ($ad{'hour_local'} < 6) {
4877                 printf(" (<span class=\"atnight\">%02d:%02d</span> %s)",
4878                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
4879         } else {
4880                 printf(" (%02d:%02d %s)",
4881                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
4882         }
4883         print "</td>" .
4884               "</tr>\n";
4885         print "<tr><td>committer</td><td>" . esc_html($co{'committer'}) . "</td></tr>\n";
4886         print "<tr><td></td><td> $cd{'rfc2822'}" .
4887               sprintf(" (%02d:%02d %s)", $cd{'hour_local'}, $cd{'minute_local'}, $cd{'tz_local'}) .
4888               "</td></tr>\n";
4889         print "<tr><td>commit</td><td class=\"sha1\">$co{'id'}</td></tr>\n";
4890         print "<tr>" .
4891               "<td>tree</td>" .
4892               "<td class=\"sha1\">" .
4893               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash),
4894                        class => "list"}, $co{'tree'}) .
4895               "</td>" .
4896               "<td class=\"link\">" .
4897               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash)},
4898                       "tree");
4899         my $snapshot_links = format_snapshot_links($hash);
4900         if (defined $snapshot_links) {
4901                 print " | " . $snapshot_links;
4902         }
4903         print "</td>" .
4904               "</tr>\n";
4905
4906         foreach my $par (@$parents) {
4907                 print "<tr>" .
4908                       "<td>parent</td>" .
4909                       "<td class=\"sha1\">" .
4910                       $cgi->a({-href => href(action=>"commit", hash=>$par),
4911                                class => "list"}, $par) .
4912                       "</td>" .
4913                       "<td class=\"link\">" .
4914                       $cgi->a({-href => href(action=>"commit", hash=>$par)}, "commit") .
4915                       " | " .
4916                       $cgi->a({-href => href(action=>"commitdiff", hash=>$hash, hash_parent=>$par)}, "diff") .
4917                       "</td>" .
4918                       "</tr>\n";
4919         }
4920         print "</table>".
4921               "</div>\n";
4922
4923         print "<div class=\"page_body\">\n";
4924         git_print_log($co{'comment'});
4925         print "</div>\n";
4926
4927         git_difftree_body(\@difftree, $hash, @$parents);
4928
4929         git_footer_html();
4930 }
4931
4932 sub git_object {
4933         # object is defined by:
4934         # - hash or hash_base alone
4935         # - hash_base and file_name
4936         my $type;
4937
4938         # - hash or hash_base alone
4939         if ($hash || ($hash_base && !defined $file_name)) {
4940                 my $object_id = $hash || $hash_base;
4941
4942                 open my $fd, "-|", quote_command(
4943                         git_cmd(), 'cat-file', '-t', $object_id) . ' 2> /dev/null'
4944                         or die_error(404, "Object does not exist");
4945                 $type = <$fd>;
4946                 chomp $type;
4947                 close $fd
4948                         or die_error(404, "Object does not exist");
4949
4950         # - hash_base and file_name
4951         } elsif ($hash_base && defined $file_name) {
4952                 $file_name =~ s,/+$,,;
4953
4954                 system(git_cmd(), "cat-file", '-e', $hash_base) == 0
4955                         or die_error(404, "Base object does not exist");
4956
4957                 # here errors should not hapen
4958                 open my $fd, "-|", git_cmd(), "ls-tree", $hash_base, "--", $file_name
4959                         or die_error(500, "Open git-ls-tree failed");
4960                 my $line = <$fd>;
4961                 close $fd;
4962
4963                 #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
4964                 unless ($line && $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t/) {
4965                         die_error(404, "File or directory for given base does not exist");
4966                 }
4967                 $type = $2;
4968                 $hash = $3;
4969         } else {
4970                 die_error(400, "Not enough information to find object");
4971         }
4972
4973         print $cgi->redirect(-uri => href(action=>$type, -full=>1,
4974                                           hash=>$hash, hash_base=>$hash_base,
4975                                           file_name=>$file_name),
4976                              -status => '302 Found');
4977 }
4978
4979 sub git_blobdiff {
4980         my $format = shift || 'html';
4981
4982         my $fd;
4983         my @difftree;
4984         my %diffinfo;
4985         my $expires;
4986
4987         # preparing $fd and %diffinfo for git_patchset_body
4988         # new style URI
4989         if (defined $hash_base && defined $hash_parent_base) {
4990                 if (defined $file_name) {
4991                         # read raw output
4992                         open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4993                                 $hash_parent_base, $hash_base,
4994                                 "--", (defined $file_parent ? $file_parent : ()), $file_name
4995                                 or die_error(500, "Open git-diff-tree failed");
4996                         @difftree = map { chomp; $_ } <$fd>;
4997                         close $fd
4998                                 or die_error(404, "Reading git-diff-tree failed");
4999                         @difftree
5000                                 or die_error(404, "Blob diff not found");
5001
5002                 } elsif (defined $hash &&
5003                          $hash =~ /[0-9a-fA-F]{40}/) {
5004                         # try to find filename from $hash
5005
5006                         # read filtered raw output
5007                         open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
5008                                 $hash_parent_base, $hash_base, "--"
5009                                 or die_error(500, "Open git-diff-tree failed");
5010                         @difftree =
5011                                 # ':100644 100644 03b21826... 3b93d5e7... M     ls-files.c'
5012                                 # $hash == to_id
5013                                 grep { /^:[0-7]{6} [0-7]{6} [0-9a-fA-F]{40} $hash/ }
5014                                 map { chomp; $_ } <$fd>;
5015                         close $fd
5016                                 or die_error(404, "Reading git-diff-tree failed");
5017                         @difftree
5018                                 or die_error(404, "Blob diff not found");
5019
5020                 } else {
5021                         die_error(400, "Missing one of the blob diff parameters");
5022                 }
5023
5024                 if (@difftree > 1) {
5025                         die_error(400, "Ambiguous blob diff specification");
5026                 }
5027
5028                 %diffinfo = parse_difftree_raw_line($difftree[0]);
5029                 $file_parent ||= $diffinfo{'from_file'} || $file_name;
5030                 $file_name   ||= $diffinfo{'to_file'};
5031
5032                 $hash_parent ||= $diffinfo{'from_id'};
5033                 $hash        ||= $diffinfo{'to_id'};
5034
5035                 # non-textual hash id's can be cached
5036                 if ($hash_base =~ m/^[0-9a-fA-F]{40}$/ &&
5037                     $hash_parent_base =~ m/^[0-9a-fA-F]{40}$/) {
5038                         $expires = '+1d';
5039                 }
5040
5041                 # open patch output
5042                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
5043                         '-p', ($format eq 'html' ? "--full-index" : ()),
5044                         $hash_parent_base, $hash_base,
5045                         "--", (defined $file_parent ? $file_parent : ()), $file_name
5046                         or die_error(500, "Open git-diff-tree failed");
5047         }
5048
5049         # old/legacy style URI
5050         if (!%diffinfo && # if new style URI failed
5051             defined $hash && defined $hash_parent) {
5052                 # fake git-diff-tree raw output
5053                 $diffinfo{'from_mode'} = $diffinfo{'to_mode'} = "blob";
5054                 $diffinfo{'from_id'} = $hash_parent;
5055                 $diffinfo{'to_id'}   = $hash;
5056                 if (defined $file_name) {
5057                         if (defined $file_parent) {
5058                                 $diffinfo{'status'} = '2';
5059                                 $diffinfo{'from_file'} = $file_parent;
5060                                 $diffinfo{'to_file'}   = $file_name;
5061                         } else { # assume not renamed
5062                                 $diffinfo{'status'} = '1';
5063                                 $diffinfo{'from_file'} = $file_name;
5064                                 $diffinfo{'to_file'}   = $file_name;
5065                         }
5066                 } else { # no filename given
5067                         $diffinfo{'status'} = '2';
5068                         $diffinfo{'from_file'} = $hash_parent;
5069                         $diffinfo{'to_file'}   = $hash;
5070                 }
5071
5072                 # non-textual hash id's can be cached
5073                 if ($hash =~ m/^[0-9a-fA-F]{40}$/ &&
5074                     $hash_parent =~ m/^[0-9a-fA-F]{40}$/) {
5075                         $expires = '+1d';
5076                 }
5077
5078                 # open patch output
5079                 open $fd, "-|", git_cmd(), "diff", @diff_opts,
5080                         '-p', ($format eq 'html' ? "--full-index" : ()),
5081                         $hash_parent, $hash, "--"
5082                         or die_error(500, "Open git-diff failed");
5083         } else  {
5084                 die_error(400, "Missing one of the blob diff parameters")
5085                         unless %diffinfo;
5086         }
5087
5088         # header
5089         if ($format eq 'html') {
5090                 my $formats_nav =
5091                         $cgi->a({-href => href(action=>"blobdiff_plain", -replay=>1)},
5092                                 "raw");
5093                 git_header_html(undef, $expires);
5094                 if (defined $hash_base && (my %co = parse_commit($hash_base))) {
5095                         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
5096                         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
5097                 } else {
5098                         print "<div class=\"page_nav\"><br/>$formats_nav<br/></div>\n";
5099                         print "<div class=\"title\">$hash vs $hash_parent</div>\n";
5100                 }
5101                 if (defined $file_name) {
5102                         git_print_page_path($file_name, "blob", $hash_base);
5103                 } else {
5104                         print "<div class=\"page_path\"></div>\n";
5105                 }
5106
5107         } elsif ($format eq 'plain') {
5108                 print $cgi->header(
5109                         -type => 'text/plain',
5110                         -charset => 'utf-8',
5111                         -expires => $expires,
5112                         -content_disposition => 'inline; filename="' . "$file_name" . '.patch"');
5113
5114                 print "X-Git-Url: " . $cgi->self_url() . "\n\n";
5115
5116         } else {
5117                 die_error(400, "Unknown blobdiff format");
5118         }
5119
5120         # patch
5121         if ($format eq 'html') {
5122                 print "<div class=\"page_body\">\n";
5123
5124                 git_patchset_body($fd, [ \%diffinfo ], $hash_base, $hash_parent_base);
5125                 close $fd;
5126
5127                 print "</div>\n"; # class="page_body"
5128                 git_footer_html();
5129
5130         } else {
5131                 while (my $line = <$fd>) {
5132                         $line =~ s!a/($hash|$hash_parent)!'a/'.esc_path($diffinfo{'from_file'})!eg;
5133                         $line =~ s!b/($hash|$hash_parent)!'b/'.esc_path($diffinfo{'to_file'})!eg;
5134
5135                         print $line;
5136
5137                         last if $line =~ m!^\+\+\+!;
5138                 }
5139                 local $/ = undef;
5140                 print <$fd>;
5141                 close $fd;
5142         }
5143 }
5144
5145 sub git_blobdiff_plain {
5146         git_blobdiff('plain');
5147 }
5148
5149 sub git_commitdiff {
5150         my $format = shift || 'html';
5151         $hash ||= $hash_base || "HEAD";
5152         my %co = parse_commit($hash)
5153             or die_error(404, "Unknown commit object");
5154
5155         # choose format for commitdiff for merge
5156         if (! defined $hash_parent && @{$co{'parents'}} > 1) {
5157                 $hash_parent = '--cc';
5158         }
5159         # we need to prepare $formats_nav before almost any parameter munging
5160         my $formats_nav;
5161         if ($format eq 'html') {
5162                 $formats_nav =
5163                         $cgi->a({-href => href(action=>"commitdiff_plain", -replay=>1)},
5164                                 "raw");
5165
5166                 if (defined $hash_parent &&
5167                     $hash_parent ne '-c' && $hash_parent ne '--cc') {
5168                         # commitdiff with two commits given
5169                         my $hash_parent_short = $hash_parent;
5170                         if ($hash_parent =~ m/^[0-9a-fA-F]{40}$/) {
5171                                 $hash_parent_short = substr($hash_parent, 0, 7);
5172                         }
5173                         $formats_nav .=
5174                                 ' (from';
5175                         for (my $i = 0; $i < @{$co{'parents'}}; $i++) {
5176                                 if ($co{'parents'}[$i] eq $hash_parent) {
5177                                         $formats_nav .= ' parent ' . ($i+1);
5178                                         last;
5179                                 }
5180                         }
5181                         $formats_nav .= ': ' .
5182                                 $cgi->a({-href => href(action=>"commitdiff",
5183                                                        hash=>$hash_parent)},
5184                                         esc_html($hash_parent_short)) .
5185                                 ')';
5186                 } elsif (!$co{'parent'}) {
5187                         # --root commitdiff
5188                         $formats_nav .= ' (initial)';
5189                 } elsif (scalar @{$co{'parents'}} == 1) {
5190                         # single parent commit
5191                         $formats_nav .=
5192                                 ' (parent: ' .
5193                                 $cgi->a({-href => href(action=>"commitdiff",
5194                                                        hash=>$co{'parent'})},
5195                                         esc_html(substr($co{'parent'}, 0, 7))) .
5196                                 ')';
5197                 } else {
5198                         # merge commit
5199                         if ($hash_parent eq '--cc') {
5200                                 $formats_nav .= ' | ' .
5201                                         $cgi->a({-href => href(action=>"commitdiff",
5202                                                                hash=>$hash, hash_parent=>'-c')},
5203                                                 'combined');
5204                         } else { # $hash_parent eq '-c'
5205                                 $formats_nav .= ' | ' .
5206                                         $cgi->a({-href => href(action=>"commitdiff",
5207                                                                hash=>$hash, hash_parent=>'--cc')},
5208                                                 'compact');
5209                         }
5210                         $formats_nav .=
5211                                 ' (merge: ' .
5212                                 join(' ', map {
5213                                         $cgi->a({-href => href(action=>"commitdiff",
5214                                                                hash=>$_)},
5215                                                 esc_html(substr($_, 0, 7)));
5216                                 } @{$co{'parents'}} ) .
5217                                 ')';
5218                 }
5219         }
5220
5221         my $hash_parent_param = $hash_parent;
5222         if (!defined $hash_parent_param) {
5223                 # --cc for multiple parents, --root for parentless
5224                 $hash_parent_param =
5225                         @{$co{'parents'}} > 1 ? '--cc' : $co{'parent'} || '--root';
5226         }
5227
5228         # read commitdiff
5229         my $fd;
5230         my @difftree;
5231         if ($format eq 'html') {
5232                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
5233                         "--no-commit-id", "--patch-with-raw", "--full-index",
5234                         $hash_parent_param, $hash, "--"
5235                         or die_error(500, "Open git-diff-tree failed");
5236
5237                 while (my $line = <$fd>) {
5238                         chomp $line;
5239                         # empty line ends raw part of diff-tree output
5240                         last unless $line;
5241                         push @difftree, scalar parse_difftree_raw_line($line);
5242                 }
5243
5244         } elsif ($format eq 'plain') {
5245                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
5246                         '-p', $hash_parent_param, $hash, "--"
5247                         or die_error(500, "Open git-diff-tree failed");
5248
5249         } else {
5250                 die_error(400, "Unknown commitdiff format");
5251         }
5252
5253         # non-textual hash id's can be cached
5254         my $expires;
5255         if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
5256                 $expires = "+1d";
5257         }
5258
5259         # write commit message
5260         if ($format eq 'html') {
5261                 my $refs = git_get_references();
5262                 my $ref = format_ref_marker($refs, $co{'id'});
5263
5264                 git_header_html(undef, $expires);
5265                 git_print_page_nav('commitdiff','', $hash,$co{'tree'},$hash, $formats_nav);
5266                 git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash);
5267                 git_print_authorship(\%co);
5268                 print "<div class=\"page_body\">\n";
5269                 if (@{$co{'comment'}} > 1) {
5270                         print "<div class=\"log\">\n";
5271                         git_print_log($co{'comment'}, -final_empty_line=> 1, -remove_title => 1);
5272                         print "</div>\n"; # class="log"
5273                 }
5274
5275         } elsif ($format eq 'plain') {
5276                 my $refs = git_get_references("tags");
5277                 my $tagname = git_get_rev_name_tags($hash);
5278                 my $filename = basename($project) . "-$hash.patch";
5279
5280                 print $cgi->header(
5281                         -type => 'text/plain',
5282                         -charset => 'utf-8',
5283                         -expires => $expires,
5284                         -content_disposition => 'inline; filename="' . "$filename" . '"');
5285                 my %ad = parse_date($co{'author_epoch'}, $co{'author_tz'});
5286                 print "From: " . to_utf8($co{'author'}) . "\n";
5287                 print "Date: $ad{'rfc2822'} ($ad{'tz_local'})\n";
5288                 print "Subject: " . to_utf8($co{'title'}) . "\n";
5289
5290                 print "X-Git-Tag: $tagname\n" if $tagname;
5291                 print "X-Git-Url: " . $cgi->self_url() . "\n\n";
5292
5293                 foreach my $line (@{$co{'comment'}}) {
5294                         print to_utf8($line) . "\n";
5295                 }
5296                 print "---\n\n";
5297         }
5298
5299         # write patch
5300         if ($format eq 'html') {
5301                 my $use_parents = !defined $hash_parent ||
5302                         $hash_parent eq '-c' || $hash_parent eq '--cc';
5303                 git_difftree_body(\@difftree, $hash,
5304                                   $use_parents ? @{$co{'parents'}} : $hash_parent);
5305                 print "<br/>\n";
5306
5307                 git_patchset_body($fd, \@difftree, $hash,
5308                                   $use_parents ? @{$co{'parents'}} : $hash_parent);
5309                 close $fd;
5310                 print "</div>\n"; # class="page_body"
5311                 git_footer_html();
5312
5313         } elsif ($format eq 'plain') {
5314                 local $/ = undef;
5315                 print <$fd>;
5316                 close $fd
5317                         or print "Reading git-diff-tree failed\n";
5318         }
5319 }
5320
5321 sub git_commitdiff_plain {
5322         git_commitdiff('plain');
5323 }
5324
5325 sub git_history {
5326         if (!defined $hash_base) {
5327                 $hash_base = git_get_head_hash($project);
5328         }
5329         if (!defined $page) {
5330                 $page = 0;
5331         }
5332         my $ftype;
5333         my %co = parse_commit($hash_base)
5334             or die_error(404, "Unknown commit object");
5335
5336         my $refs = git_get_references();
5337         my $limit = sprintf("--max-count=%i", (100 * ($page+1)));
5338
5339         my @commitlist = parse_commits($hash_base, 101, (100 * $page),
5340                                        $file_name, "--full-history")
5341             or die_error(404, "No such file or directory on given branch");
5342
5343         if (!defined $hash && defined $file_name) {
5344                 # some commits could have deleted file in question,
5345                 # and not have it in tree, but one of them has to have it
5346                 for (my $i = 0; $i <= @commitlist; $i++) {
5347                         $hash = git_get_hash_by_path($commitlist[$i]{'id'}, $file_name);
5348                         last if defined $hash;
5349                 }
5350         }
5351         if (defined $hash) {
5352                 $ftype = git_get_type($hash);
5353         }
5354         if (!defined $ftype) {
5355                 die_error(500, "Unknown type of object");
5356         }
5357
5358         my $paging_nav = '';
5359         if ($page > 0) {
5360                 $paging_nav .=
5361                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
5362                                                file_name=>$file_name)},
5363                                 "first");
5364                 $paging_nav .= " &sdot; " .
5365                         $cgi->a({-href => href(-replay=>1, page=>$page-1),
5366                                  -accesskey => "p", -title => "Alt-p"}, "prev");
5367         } else {
5368                 $paging_nav .= "first";
5369                 $paging_nav .= " &sdot; prev";
5370         }
5371         my $next_link = '';
5372         if ($#commitlist >= 100) {
5373                 $next_link =
5374                         $cgi->a({-href => href(-replay=>1, page=>$page+1),
5375                                  -accesskey => "n", -title => "Alt-n"}, "next");
5376                 $paging_nav .= " &sdot; $next_link";
5377         } else {
5378                 $paging_nav .= " &sdot; next";
5379         }
5380
5381         git_header_html();
5382         git_print_page_nav('history','', $hash_base,$co{'tree'},$hash_base, $paging_nav);
5383         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
5384         git_print_page_path($file_name, $ftype, $hash_base);
5385
5386         git_history_body(\@commitlist, 0, 99,
5387                          $refs, $hash_base, $ftype, $next_link);
5388
5389         git_footer_html();
5390 }
5391
5392 sub git_search {
5393         gitweb_check_feature('search') or die_error(403, "Search is disabled");
5394         if (!defined $searchtext) {
5395                 die_error(400, "Text field is empty");
5396         }
5397         if (!defined $hash) {
5398                 $hash = git_get_head_hash($project);
5399         }
5400         my %co = parse_commit($hash);
5401         if (!%co) {
5402                 die_error(404, "Unknown commit object");
5403         }
5404         if (!defined $page) {
5405                 $page = 0;
5406         }
5407
5408         $searchtype ||= 'commit';
5409         if ($searchtype eq 'pickaxe') {
5410                 # pickaxe may take all resources of your box and run for several minutes
5411                 # with every query - so decide by yourself how public you make this feature
5412                 gitweb_check_feature('pickaxe')
5413                     or die_error(403, "Pickaxe is disabled");
5414         }
5415         if ($searchtype eq 'grep') {
5416                 gitweb_check_feature('grep')
5417                     or die_error(403, "Grep is disabled");
5418         }
5419
5420         git_header_html();
5421
5422         if ($searchtype eq 'commit' or $searchtype eq 'author' or $searchtype eq 'committer') {
5423                 my $greptype;
5424                 if ($searchtype eq 'commit') {
5425                         $greptype = "--grep=";
5426                 } elsif ($searchtype eq 'author') {
5427                         $greptype = "--author=";
5428                 } elsif ($searchtype eq 'committer') {
5429                         $greptype = "--committer=";
5430                 }
5431                 $greptype .= $searchtext;
5432                 my @commitlist = parse_commits($hash, 101, (100 * $page), undef,
5433                                                $greptype, '--regexp-ignore-case',
5434                                                $search_use_regexp ? '--extended-regexp' : '--fixed-strings');
5435
5436                 my $paging_nav = '';
5437                 if ($page > 0) {
5438                         $paging_nav .=
5439                                 $cgi->a({-href => href(action=>"search", hash=>$hash,
5440                                                        searchtext=>$searchtext,
5441                                                        searchtype=>$searchtype)},
5442                                         "first");
5443                         $paging_nav .= " &sdot; " .
5444                                 $cgi->a({-href => href(-replay=>1, page=>$page-1),
5445                                          -accesskey => "p", -title => "Alt-p"}, "prev");
5446                 } else {
5447                         $paging_nav .= "first";
5448                         $paging_nav .= " &sdot; prev";
5449                 }
5450                 my $next_link = '';
5451                 if ($#commitlist >= 100) {
5452                         $next_link =
5453                                 $cgi->a({-href => href(-replay=>1, page=>$page+1),
5454                                          -accesskey => "n", -title => "Alt-n"}, "next");
5455                         $paging_nav .= " &sdot; $next_link";
5456                 } else {
5457                         $paging_nav .= " &sdot; next";
5458                 }
5459
5460                 if ($#commitlist >= 100) {
5461                 }
5462
5463                 git_print_page_nav('','', $hash,$co{'tree'},$hash, $paging_nav);
5464                 git_print_header_div('commit', esc_html($co{'title'}), $hash);
5465                 git_search_grep_body(\@commitlist, 0, 99, $next_link);
5466         }
5467
5468         if ($searchtype eq 'pickaxe') {
5469                 git_print_page_nav('','', $hash,$co{'tree'},$hash);
5470                 git_print_header_div('commit', esc_html($co{'title'}), $hash);
5471
5472                 print "<table class=\"pickaxe search\">\n";
5473                 my $alternate = 1;
5474                 $/ = "\n";
5475                 open my $fd, '-|', git_cmd(), '--no-pager', 'log', @diff_opts,
5476                         '--pretty=format:%H', '--no-abbrev', '--raw', "-S$searchtext",
5477                         ($search_use_regexp ? '--pickaxe-regex' : ());
5478                 undef %co;
5479                 my @files;
5480                 while (my $line = <$fd>) {
5481                         chomp $line;
5482                         next unless $line;
5483
5484                         my %set = parse_difftree_raw_line($line);
5485                         if (defined $set{'commit'}) {
5486                                 # finish previous commit
5487                                 if (%co) {
5488                                         print "</td>\n" .
5489                                               "<td class=\"link\">" .
5490                                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})}, "commit") .
5491                                               " | " .
5492                                               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$co{'id'})}, "tree");
5493                                         print "</td>\n" .
5494                                               "</tr>\n";
5495                                 }
5496
5497                                 if ($alternate) {
5498                                         print "<tr class=\"dark\">\n";
5499                                 } else {
5500                                         print "<tr class=\"light\">\n";
5501                                 }
5502                                 $alternate ^= 1;
5503                                 %co = parse_commit($set{'commit'});
5504                                 my $author = chop_and_escape_str($co{'author_name'}, 15, 5);
5505                                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
5506                                       "<td><i>$author</i></td>\n" .
5507                                       "<td>" .
5508                                       $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}),
5509                                               -class => "list subject"},
5510                                               chop_and_escape_str($co{'title'}, 50) . "<br/>");
5511                         } elsif (defined $set{'to_id'}) {
5512                                 next if ($set{'to_id'} =~ m/^0{40}$/);
5513
5514                                 print $cgi->a({-href => href(action=>"blob", hash_base=>$co{'id'},
5515                                                              hash=>$set{'to_id'}, file_name=>$set{'to_file'}),
5516                                               -class => "list"},
5517                                               "<span class=\"match\">" . esc_path($set{'file'}) . "</span>") .
5518                                       "<br/>\n";
5519                         }
5520                 }
5521                 close $fd;
5522
5523                 # finish last commit (warning: repetition!)
5524                 if (%co) {
5525                         print "</td>\n" .
5526                               "<td class=\"link\">" .
5527                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})}, "commit") .
5528                               " | " .
5529                               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$co{'id'})}, "tree");
5530                         print "</td>\n" .
5531                               "</tr>\n";
5532                 }
5533
5534                 print "</table>\n";
5535         }
5536
5537         if ($searchtype eq 'grep') {
5538                 git_print_page_nav('','', $hash,$co{'tree'},$hash);
5539                 git_print_header_div('commit', esc_html($co{'title'}), $hash);
5540
5541                 print "<table class=\"grep_search\">\n";
5542                 my $alternate = 1;
5543                 my $matches = 0;
5544                 $/ = "\n";
5545                 open my $fd, "-|", git_cmd(), 'grep', '-n',
5546                         $search_use_regexp ? ('-E', '-i') : '-F',
5547                         $searchtext, $co{'tree'};
5548                 my $lastfile = '';
5549                 while (my $line = <$fd>) {
5550                         chomp $line;
5551                         my ($file, $lno, $ltext, $binary);
5552                         last if ($matches++ > 1000);
5553                         if ($line =~ /^Binary file (.+) matches$/) {
5554                                 $file = $1;
5555                                 $binary = 1;
5556                         } else {
5557                                 (undef, $file, $lno, $ltext) = split(/:/, $line, 4);
5558                         }
5559                         if ($file ne $lastfile) {
5560                                 $lastfile and print "</td></tr>\n";
5561                                 if ($alternate++) {
5562                                         print "<tr class=\"dark\">\n";
5563                                 } else {
5564                                         print "<tr class=\"light\">\n";
5565                                 }
5566                                 print "<td class=\"list\">".
5567                                         $cgi->a({-href => href(action=>"blob", hash=>$co{'hash'},
5568                                                                file_name=>"$file"),
5569                                                 -class => "list"}, esc_path($file));
5570                                 print "</td><td>\n";
5571                                 $lastfile = $file;
5572                         }
5573                         if ($binary) {
5574                                 print "<div class=\"binary\">Binary file</div>\n";
5575                         } else {
5576                                 $ltext = untabify($ltext);
5577                                 if ($ltext =~ m/^(.*)($search_regexp)(.*)$/i) {
5578                                         $ltext = esc_html($1, -nbsp=>1);
5579                                         $ltext .= '<span class="match">';
5580                                         $ltext .= esc_html($2, -nbsp=>1);
5581                                         $ltext .= '</span>';
5582                                         $ltext .= esc_html($3, -nbsp=>1);
5583                                 } else {
5584                                         $ltext = esc_html($ltext, -nbsp=>1);
5585                                 }
5586                                 print "<div class=\"pre\">" .
5587                                         $cgi->a({-href => href(action=>"blob", hash=>$co{'hash'},
5588                                                                file_name=>"$file").'#l'.$lno,
5589                                                 -class => "linenr"}, sprintf('%4i', $lno))
5590                                         . ' ' .  $ltext . "</div>\n";
5591                         }
5592                 }
5593                 if ($lastfile) {
5594                         print "</td></tr>\n";
5595                         if ($matches > 1000) {
5596                                 print "<div class=\"diff nodifferences\">Too many matches, listing trimmed</div>\n";
5597                         }
5598                 } else {
5599                         print "<div class=\"diff nodifferences\">No matches found</div>\n";
5600                 }
5601                 close $fd;
5602
5603                 print "</table>\n";
5604         }
5605         git_footer_html();
5606 }
5607
5608 sub git_search_help {
5609         git_header_html();
5610         git_print_page_nav('','', $hash,$hash,$hash);
5611         print <<EOT;
5612 <p><strong>Pattern</strong> is by default a normal string that is matched precisely (but without
5613 regard to case, except in the case of pickaxe). However, when you check the <em>re</em> checkbox,
5614 the pattern entered is recognized as the POSIX extended
5615 <a href="http://en.wikipedia.org/wiki/Regular_expression">regular expression</a> (also case
5616 insensitive).</p>
5617 <dl>
5618 <dt><b>commit</b></dt>
5619 <dd>The commit messages and authorship information will be scanned for the given pattern.</dd>
5620 EOT
5621         my ($have_grep) = gitweb_check_feature('grep');
5622         if ($have_grep) {
5623                 print <<EOT;
5624 <dt><b>grep</b></dt>
5625 <dd>All files in the currently selected tree (HEAD unless you are explicitly browsing
5626     a different one) are searched for the given pattern. On large trees, this search can take
5627 a while and put some strain on the server, so please use it with some consideration. Note that
5628 due to git-grep peculiarity, currently if regexp mode is turned off, the matches are
5629 case-sensitive.</dd>
5630 EOT
5631         }
5632         print <<EOT;
5633 <dt><b>author</b></dt>
5634 <dd>Name and e-mail of the change author and date of birth of the patch will be scanned for the given pattern.</dd>
5635 <dt><b>committer</b></dt>
5636 <dd>Name and e-mail of the committer and date of commit will be scanned for the given pattern.</dd>
5637 EOT
5638         my ($have_pickaxe) = gitweb_check_feature('pickaxe');
5639         if ($have_pickaxe) {
5640                 print <<EOT;
5641 <dt><b>pickaxe</b></dt>
5642 <dd>All commits that caused the string to appear or disappear from any file (changes that
5643 added, removed or "modified" the string) will be listed. This search can take a while and
5644 takes a lot of strain on the server, so please use it wisely. Note that since you may be
5645 interested even in changes just changing the case as well, this search is case sensitive.</dd>
5646 EOT
5647         }
5648         print "</dl>\n";
5649         git_footer_html();
5650 }
5651
5652 sub git_shortlog {
5653         my $head = git_get_head_hash($project);
5654         if (!defined $hash) {
5655                 $hash = $head;
5656         }
5657         if (!defined $page) {
5658                 $page = 0;
5659         }
5660         my $refs = git_get_references();
5661
5662         my $commit_hash = $hash;
5663         if (defined $hash_parent) {
5664                 $commit_hash = "$hash_parent..$hash";
5665         }
5666         my @commitlist = parse_commits($commit_hash, 101, (100 * $page));
5667
5668         my $paging_nav = format_paging_nav('shortlog', $hash, $head, $page, $#commitlist >= 100);
5669         my $next_link = '';
5670         if ($#commitlist >= 100) {
5671                 $next_link =
5672                         $cgi->a({-href => href(-replay=>1, page=>$page+1),
5673                                  -accesskey => "n", -title => "Alt-n"}, "next");
5674         }
5675
5676         git_header_html();
5677         git_print_page_nav('shortlog','', $hash,$hash,$hash, $paging_nav);
5678         git_print_header_div('summary', $project);
5679
5680         git_shortlog_body(\@commitlist, 0, 99, $refs, $next_link);
5681
5682         git_footer_html();
5683 }
5684
5685 ## ......................................................................
5686 ## feeds (RSS, Atom; OPML)
5687
5688 sub git_feed {
5689         my $format = shift || 'atom';
5690         my ($have_blame) = gitweb_check_feature('blame');
5691
5692         # Atom: http://www.atomenabled.org/developers/syndication/
5693         # RSS:  http://www.notestips.com/80256B3A007F2692/1/NAMO5P9UPQ
5694         if ($format ne 'rss' && $format ne 'atom') {
5695                 die_error(400, "Unknown web feed format");
5696         }
5697
5698         # log/feed of current (HEAD) branch, log of given branch, history of file/directory
5699         my $head = $hash || 'HEAD';
5700         my @commitlist = parse_commits($head, 150, 0, $file_name);
5701
5702         my %latest_commit;
5703         my %latest_date;
5704         my $content_type = "application/$format+xml";
5705         if (defined $cgi->http('HTTP_ACCEPT') &&
5706                  $cgi->Accept('text/xml') > $cgi->Accept($content_type)) {
5707                 # browser (feed reader) prefers text/xml
5708                 $content_type = 'text/xml';
5709         }
5710         if (defined($commitlist[0])) {
5711                 %latest_commit = %{$commitlist[0]};
5712                 %latest_date   = parse_date($latest_commit{'author_epoch'});
5713                 print $cgi->header(
5714                         -type => $content_type,
5715                         -charset => 'utf-8',
5716                         -last_modified => $latest_date{'rfc2822'});
5717         } else {
5718                 print $cgi->header(
5719                         -type => $content_type,
5720                         -charset => 'utf-8');
5721         }
5722
5723         # Optimization: skip generating the body if client asks only
5724         # for Last-Modified date.
5725         return if ($cgi->request_method() eq 'HEAD');
5726
5727         # header variables
5728         my $title = "$site_name - $project/$action";
5729         my $feed_type = 'log';
5730         if (defined $hash) {
5731                 $title .= " - '$hash'";
5732                 $feed_type = 'branch log';
5733                 if (defined $file_name) {
5734                         $title .= " :: $file_name";
5735                         $feed_type = 'history';
5736                 }
5737         } elsif (defined $file_name) {
5738                 $title .= " - $file_name";
5739                 $feed_type = 'history';
5740         }
5741         $title .= " $feed_type";
5742         my $descr = git_get_project_description($project);
5743         if (defined $descr) {
5744                 $descr = esc_html($descr);
5745         } else {
5746                 $descr = "$project " .
5747                          ($format eq 'rss' ? 'RSS' : 'Atom') .
5748                          " feed";
5749         }
5750         my $owner = git_get_project_owner($project);
5751         $owner = esc_html($owner);
5752
5753         #header
5754         my $alt_url;
5755         if (defined $file_name) {
5756                 $alt_url = href(-full=>1, action=>"history", hash=>$hash, file_name=>$file_name);
5757         } elsif (defined $hash) {
5758                 $alt_url = href(-full=>1, action=>"log", hash=>$hash);
5759         } else {
5760                 $alt_url = href(-full=>1, action=>"summary");
5761         }
5762         print qq!<?xml version="1.0" encoding="utf-8"?>\n!;
5763         if ($format eq 'rss') {
5764                 print <<XML;
5765 <rss version="2.0" xmlns:content="http://purl.org/rss/1.0/modules/content/">
5766 <channel>
5767 XML
5768                 print "<title>$title</title>\n" .
5769                       "<link>$alt_url</link>\n" .
5770                       "<description>$descr</description>\n" .
5771                       "<language>en</language>\n";
5772         } elsif ($format eq 'atom') {
5773                 print <<XML;
5774 <feed xmlns="http://www.w3.org/2005/Atom">
5775 XML
5776                 print "<title>$title</title>\n" .
5777                       "<subtitle>$descr</subtitle>\n" .
5778                       '<link rel="alternate" type="text/html" href="' .
5779                       $alt_url . '" />' . "\n" .
5780                       '<link rel="self" type="' . $content_type . '" href="' .
5781                       $cgi->self_url() . '" />' . "\n" .
5782                       "<id>" . href(-full=>1) . "</id>\n" .
5783                       # use project owner for feed author
5784                       "<author><name>$owner</name></author>\n";
5785                 if (defined $favicon) {
5786                         print "<icon>" . esc_url($favicon) . "</icon>\n";
5787                 }
5788                 if (defined $logo_url) {
5789                         # not twice as wide as tall: 72 x 27 pixels
5790                         print "<logo>" . esc_url($logo) . "</logo>\n";
5791                 }
5792                 if (! %latest_date) {
5793                         # dummy date to keep the feed valid until commits trickle in:
5794                         print "<updated>1970-01-01T00:00:00Z</updated>\n";
5795                 } else {
5796                         print "<updated>$latest_date{'iso-8601'}</updated>\n";
5797                 }
5798         }
5799
5800         # contents
5801         for (my $i = 0; $i <= $#commitlist; $i++) {
5802                 my %co = %{$commitlist[$i]};
5803                 my $commit = $co{'id'};
5804                 # we read 150, we always show 30 and the ones more recent than 48 hours
5805                 if (($i >= 20) && ((time - $co{'author_epoch'}) > 48*60*60)) {
5806                         last;
5807                 }
5808                 my %cd = parse_date($co{'author_epoch'});
5809
5810                 # get list of changed files
5811                 open my $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
5812                         $co{'parent'} || "--root",
5813                         $co{'id'}, "--", (defined $file_name ? $file_name : ())
5814                         or next;
5815                 my @difftree = map { chomp; $_ } <$fd>;
5816                 close $fd
5817                         or next;
5818
5819                 # print element (entry, item)
5820                 my $co_url = href(-full=>1, action=>"commitdiff", hash=>$commit);
5821                 if ($format eq 'rss') {
5822                         print "<item>\n" .
5823                               "<title>" . esc_html($co{'title'}) . "</title>\n" .
5824                               "<author>" . esc_html($co{'author'}) . "</author>\n" .
5825                               "<pubDate>$cd{'rfc2822'}</pubDate>\n" .
5826                               "<guid isPermaLink=\"true\">$co_url</guid>\n" .
5827                               "<link>$co_url</link>\n" .
5828                               "<description>" . esc_html($co{'title'}) . "</description>\n" .
5829                               "<content:encoded>" .
5830                               "<![CDATA[\n";
5831                 } elsif ($format eq 'atom') {
5832                         print "<entry>\n" .
5833                               "<title type=\"html\">" . esc_html($co{'title'}) . "</title>\n" .
5834                               "<updated>$cd{'iso-8601'}</updated>\n" .
5835                               "<author>\n" .
5836                               "  <name>" . esc_html($co{'author_name'}) . "</name>\n";
5837                         if ($co{'author_email'}) {
5838                                 print "  <email>" . esc_html($co{'author_email'}) . "</email>\n";
5839                         }
5840                         print "</author>\n" .
5841                               # use committer for contributor
5842                               "<contributor>\n" .
5843                               "  <name>" . esc_html($co{'committer_name'}) . "</name>\n";
5844                         if ($co{'committer_email'}) {
5845                                 print "  <email>" . esc_html($co{'committer_email'}) . "</email>\n";
5846                         }
5847                         print "</contributor>\n" .
5848                               "<published>$cd{'iso-8601'}</published>\n" .
5849                               "<link rel=\"alternate\" type=\"text/html\" href=\"$co_url\" />\n" .
5850                               "<id>$co_url</id>\n" .
5851                               "<content type=\"xhtml\" xml:base=\"" . esc_url($my_url) . "\">\n" .
5852                               "<div xmlns=\"http://www.w3.org/1999/xhtml\">\n";
5853                 }
5854                 my $comment = $co{'comment'};
5855                 print "<pre>\n";
5856                 foreach my $line (@$comment) {
5857                         $line = esc_html($line);
5858                         print "$line\n";
5859                 }
5860                 print "</pre><ul>\n";
5861                 foreach my $difftree_line (@difftree) {
5862                         my %difftree = parse_difftree_raw_line($difftree_line);
5863                         next if !$difftree{'from_id'};
5864
5865                         my $file = $difftree{'file'} || $difftree{'to_file'};
5866
5867                         print "<li>" .
5868                               "[" .
5869                               $cgi->a({-href => href(-full=>1, action=>"blobdiff",
5870                                                      hash=>$difftree{'to_id'}, hash_parent=>$difftree{'from_id'},
5871                                                      hash_base=>$co{'id'}, hash_parent_base=>$co{'parent'},
5872                                                      file_name=>$file, file_parent=>$difftree{'from_file'}),
5873                                       -title => "diff"}, 'D');
5874                         if ($have_blame) {
5875                                 print $cgi->a({-href => href(-full=>1, action=>"blame",
5876                                                              file_name=>$file, hash_base=>$commit),
5877                                               -title => "blame"}, 'B');
5878                         }
5879                         # if this is not a feed of a file history
5880                         if (!defined $file_name || $file_name ne $file) {
5881                                 print $cgi->a({-href => href(-full=>1, action=>"history",
5882                                                              file_name=>$file, hash=>$commit),
5883                                               -title => "history"}, 'H');
5884                         }
5885                         $file = esc_path($file);
5886                         print "] ".
5887                               "$file</li>\n";
5888                 }
5889                 if ($format eq 'rss') {
5890                         print "</ul>]]>\n" .
5891                               "</content:encoded>\n" .
5892                               "</item>\n";
5893                 } elsif ($format eq 'atom') {
5894                         print "</ul>\n</div>\n" .
5895                               "</content>\n" .
5896                               "</entry>\n";
5897                 }
5898         }
5899
5900         # end of feed
5901         if ($format eq 'rss') {
5902                 print "</channel>\n</rss>\n";
5903         }       elsif ($format eq 'atom') {
5904                 print "</feed>\n";
5905         }
5906 }
5907
5908 sub git_rss {
5909         git_feed('rss');
5910 }
5911
5912 sub git_atom {
5913         git_feed('atom');
5914 }
5915
5916 sub git_opml {
5917         my @list = git_get_projects_list();
5918
5919         print $cgi->header(-type => 'text/xml', -charset => 'utf-8');
5920         print <<XML;
5921 <?xml version="1.0" encoding="utf-8"?>
5922 <opml version="1.0">
5923 <head>
5924   <title>$site_name OPML Export</title>
5925 </head>
5926 <body>
5927 <outline text="git RSS feeds">
5928 XML
5929
5930         foreach my $pr (@list) {
5931                 my %proj = %$pr;
5932                 my $head = git_get_head_hash($proj{'path'});
5933                 if (!defined $head) {
5934                         next;
5935                 }
5936                 $git_dir = "$projectroot/$proj{'path'}";
5937                 my %co = parse_commit($head);
5938                 if (!%co) {
5939                         next;
5940                 }
5941
5942                 my $path = esc_html(chop_str($proj{'path'}, 25, 5));
5943                 my $rss  = "$my_url?p=$proj{'path'};a=rss";
5944                 my $html = "$my_url?p=$proj{'path'};a=summary";
5945                 print "<outline type=\"rss\" text=\"$path\" title=\"$path\" xmlUrl=\"$rss\" htmlUrl=\"$html\"/>\n";
5946         }
5947         print <<XML;
5948 </outline>
5949 </body>
5950 </opml>
5951 XML
5952 }