Andrew's git - gitweb.git/blob - gitweb/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
  10use strict;
  11use warnings;
  12use CGI qw(:standard :escapeHTML -nosticky);
  13use CGI::Util qw(unescape);
  14use CGI::Carp qw(fatalsToBrowser);
  15use Encode;
  16use Fcntl ':mode';
  17use File::Find qw();
  18use File::Basename qw(basename);
  19binmode STDOUT, ':utf8';
  20
  21BEGIN {
  22        CGI->compile() if $ENV{'MOD_PERL'};
  23}
  24
  25our $cgi = new CGI;
  26our $version = "++GIT_VERSION++";
  27our $my_url = $cgi->url();
  28our $my_uri = $cgi->url(-absolute => 1);
  29
  30# core git executable to use
  31# this can just be "git" if your webserver has a sensible PATH
  32our $GIT = "++GIT_BINDIR++/git";
  33
  34# absolute fs-path which will be prepended to the project path
  35#our $projectroot = "/pub/scm";
  36our $projectroot = "++GITWEB_PROJECTROOT++";
  37
  38# target of the home link on top of all pages
  39our $home_link = $my_uri || "/";
  40
  41# string of the home link on top of all pages
  42our $home_link_str = "++GITWEB_HOME_LINK_STR++";
  43
  44# name of your site or organization to appear in page titles
  45# replace this with something more descriptive for clearer bookmarks
  46our $site_name = "++GITWEB_SITENAME++"
  47                 || ($ENV{'SERVER_NAME'} || "Untitled") . " Git";
  48
  49# filename of html text to include at top of each page
  50our $site_header = "++GITWEB_SITE_HEADER++";
  51# html text to include at home page
  52our $home_text = "++GITWEB_HOMETEXT++";
  53# filename of html text to include at bottom of each page
  54our $site_footer = "++GITWEB_SITE_FOOTER++";
  55
  56# URI of stylesheets
  57our @stylesheets = ("++GITWEB_CSS++");
  58# URI of a single stylesheet, which can be overridden in GITWEB_CONFIG.
  59our $stylesheet = undef;
  60# URI of GIT logo (72x27 size)
  61our $logo = "++GITWEB_LOGO++";
  62# URI of GIT favicon, assumed to be image/png type
  63our $favicon = "++GITWEB_FAVICON++";
  64
  65# URI and label (title) of GIT logo link
  66#our $logo_url = "http://www.kernel.org/pub/software/scm/git/docs/";
  67#our $logo_label = "git documentation";
  68our $logo_url = "http://git.or.cz/";
  69our $logo_label = "git homepage";
  70
  71# source of projects list
  72our $projects_list = "++GITWEB_LIST++";
  73
  74# default order of projects list
  75# valid values are none, project, descr, owner, and age
  76our $default_projects_order = "project";
  77
  78# show repository only if this file exists
  79# (only effective if this variable evaluates to true)
  80our $export_ok = "++GITWEB_EXPORT_OK++";
  81
  82# only allow viewing of repositories also shown on the overview page
  83our $strict_export = "++GITWEB_STRICT_EXPORT++";
  84
  85# list of git base URLs used for URL to where fetch project from,
  86# i.e. full URL is "$git_base_url/$project"
  87our @git_base_url_list = grep { $_ ne '' } ("++GITWEB_BASE_URL++");
  88
  89# default blob_plain mimetype and default charset for text/plain blob
  90our $default_blob_plain_mimetype = 'text/plain';
  91our $default_text_plain_charset  = undef;
  92
  93# file to use for guessing MIME types before trying /etc/mime.types
  94# (relative to the current git repository)
  95our $mimetypes_file = undef;
  96
  97# You define site-wide feature defaults here; override them with
  98# $GITWEB_CONFIG as necessary.
  99our %feature = (
 100        # feature => {
 101        #       'sub' => feature-sub (subroutine),
 102        #       'override' => allow-override (boolean),
 103        #       'default' => [ default options...] (array reference)}
 104        #
 105        # if feature is overridable (it means that allow-override has true value),
 106        # then feature-sub will be called with default options as parameters;
 107        # return value of feature-sub indicates if to enable specified feature
 108        #
 109        # if there is no 'sub' key (no feature-sub), then feature cannot be
 110        # overriden
 111        #
 112        # use gitweb_check_feature(<feature>) to check if <feature> is enabled
 113
 114        # Enable the 'blame' blob view, showing the last commit that modified
 115        # each line in the file. This can be very CPU-intensive.
 116
 117        # To enable system wide have in $GITWEB_CONFIG
 118        # $feature{'blame'}{'default'} = [1];
 119        # To have project specific config enable override in $GITWEB_CONFIG
 120        # $feature{'blame'}{'override'} = 1;
 121        # and in project config gitweb.blame = 0|1;
 122        'blame' => {
 123                'sub' => \&feature_blame,
 124                'override' => 0,
 125                'default' => [0]},
 126
 127        # Enable the 'snapshot' link, providing a compressed tarball of any
 128        # tree. This can potentially generate high traffic if you have large
 129        # project.
 130
 131        # To disable system wide have in $GITWEB_CONFIG
 132        # $feature{'snapshot'}{'default'} = [undef];
 133        # To have project specific config enable override in $GITWEB_CONFIG
 134        # $feature{'snapshot'}{'override'} = 1;
 135        # and in project config gitweb.snapshot = none|gzip|bzip2;
 136        'snapshot' => {
 137                'sub' => \&feature_snapshot,
 138                'override' => 0,
 139                #         => [content-encoding, suffix, program]
 140                'default' => ['x-gzip', 'gz', 'gzip']},
 141
 142        # Enable text search, which will list the commits which match author,
 143        # committer or commit text to a given string.  Enabled by default.
 144        # Project specific override is not supported.
 145        'search' => {
 146                'override' => 0,
 147                'default' => [1]},
 148
 149        # Enable the pickaxe search, which will list the commits that modified
 150        # a given string in a file. This can be practical and quite faster
 151        # alternative to 'blame', but still potentially CPU-intensive.
 152
 153        # To enable system wide have in $GITWEB_CONFIG
 154        # $feature{'pickaxe'}{'default'} = [1];
 155        # To have project specific config enable override in $GITWEB_CONFIG
 156        # $feature{'pickaxe'}{'override'} = 1;
 157        # and in project config gitweb.pickaxe = 0|1;
 158        'pickaxe' => {
 159                'sub' => \&feature_pickaxe,
 160                'override' => 0,
 161                'default' => [1]},
 162
 163        # Make gitweb use an alternative format of the URLs which can be
 164        # more readable and natural-looking: project name is embedded
 165        # directly in the path and the query string contains other
 166        # auxiliary information. All gitweb installations recognize
 167        # URL in either format; this configures in which formats gitweb
 168        # generates links.
 169
 170        # To enable system wide have in $GITWEB_CONFIG
 171        # $feature{'pathinfo'}{'default'} = [1];
 172        # Project specific override is not supported.
 173
 174        # Note that you will need to change the default location of CSS,
 175        # favicon, logo and possibly other files to an absolute URL. Also,
 176        # if gitweb.cgi serves as your indexfile, you will need to force
 177        # $my_uri to contain the script name in your $GITWEB_CONFIG.
 178        'pathinfo' => {
 179                'override' => 0,
 180                'default' => [0]},
 181
 182        # Make gitweb consider projects in project root subdirectories
 183        # to be forks of existing projects. Given project $projname.git,
 184        # projects matching $projname/*.git will not be shown in the main
 185        # projects list, instead a '+' mark will be added to $projname
 186        # there and a 'forks' view will be enabled for the project, listing
 187        # all the forks. If project list is taken from a file, forks have
 188        # to be listed after the main project.
 189
 190        # To enable system wide have in $GITWEB_CONFIG
 191        # $feature{'forks'}{'default'} = [1];
 192        # Project specific override is not supported.
 193        'forks' => {
 194                'override' => 0,
 195                'default' => [0]},
 196);
 197
 198sub gitweb_check_feature {
 199        my ($name) = @_;
 200        return unless exists $feature{$name};
 201        my ($sub, $override, @defaults) = (
 202                $feature{$name}{'sub'},
 203                $feature{$name}{'override'},
 204                @{$feature{$name}{'default'}});
 205        if (!$override) { return @defaults; }
 206        if (!defined $sub) {
 207                warn "feature $name is not overrideable";
 208                return @defaults;
 209        }
 210        return $sub->(@defaults);
 211}
 212
 213sub feature_blame {
 214        my ($val) = git_get_project_config('blame', '--bool');
 215
 216        if ($val eq 'true') {
 217                return 1;
 218        } elsif ($val eq 'false') {
 219                return 0;
 220        }
 221
 222        return $_[0];
 223}
 224
 225sub feature_snapshot {
 226        my ($ctype, $suffix, $command) = @_;
 227
 228        my ($val) = git_get_project_config('snapshot');
 229
 230        if ($val eq 'gzip') {
 231                return ('x-gzip', 'gz', 'gzip');
 232        } elsif ($val eq 'bzip2') {
 233                return ('x-bzip2', 'bz2', 'bzip2');
 234        } elsif ($val eq 'none') {
 235                return ();
 236        }
 237
 238        return ($ctype, $suffix, $command);
 239}
 240
 241sub gitweb_have_snapshot {
 242        my ($ctype, $suffix, $command) = gitweb_check_feature('snapshot');
 243        my $have_snapshot = (defined $ctype && defined $suffix);
 244
 245        return $have_snapshot;
 246}
 247
 248sub feature_pickaxe {
 249        my ($val) = git_get_project_config('pickaxe', '--bool');
 250
 251        if ($val eq 'true') {
 252                return (1);
 253        } elsif ($val eq 'false') {
 254                return (0);
 255        }
 256
 257        return ($_[0]);
 258}
 259
 260# checking HEAD file with -e is fragile if the repository was
 261# initialized long time ago (i.e. symlink HEAD) and was pack-ref'ed
 262# and then pruned.
 263sub check_head_link {
 264        my ($dir) = @_;
 265        my $headfile = "$dir/HEAD";
 266        return ((-e $headfile) ||
 267                (-l $headfile && readlink($headfile) =~ /^refs\/heads\//));
 268}
 269
 270sub check_export_ok {
 271        my ($dir) = @_;
 272        return (check_head_link($dir) &&
 273                (!$export_ok || -e "$dir/$export_ok"));
 274}
 275
 276# rename detection options for git-diff and git-diff-tree
 277# - default is '-M', with the cost proportional to
 278#   (number of removed files) * (number of new files).
 279# - more costly is '-C' (or '-C', '-M'), with the cost proportional to
 280#   (number of changed files + number of removed files) * (number of new files)
 281# - even more costly is '-C', '--find-copies-harder' with cost
 282#   (number of files in the original tree) * (number of new files)
 283# - one might want to include '-B' option, e.g. '-B', '-M'
 284our @diff_opts = ('-M'); # taken from git_commit
 285
 286our $GITWEB_CONFIG = $ENV{'GITWEB_CONFIG'} || "++GITWEB_CONFIG++";
 287do $GITWEB_CONFIG if -e $GITWEB_CONFIG;
 288
 289# version of the core git binary
 290our $git_version = qx($GIT --version) =~ m/git version (.*)$/ ? $1 : "unknown";
 291
 292$projects_list ||= $projectroot;
 293
 294# ======================================================================
 295# input validation and dispatch
 296our $action = $cgi->param('a');
 297if (defined $action) {
 298        if ($action =~ m/[^0-9a-zA-Z\.\-_]/) {
 299                die_error(undef, "Invalid action parameter");
 300        }
 301}
 302
 303# parameters which are pathnames
 304our $project = $cgi->param('p');
 305if (defined $project) {
 306        if (!validate_pathname($project) ||
 307            !(-d "$projectroot/$project") ||
 308            !check_head_link("$projectroot/$project") ||
 309            ($export_ok && !(-e "$projectroot/$project/$export_ok")) ||
 310            ($strict_export && !project_in_list($project))) {
 311                undef $project;
 312                die_error(undef, "No such project");
 313        }
 314}
 315
 316our $file_name = $cgi->param('f');
 317if (defined $file_name) {
 318        if (!validate_pathname($file_name)) {
 319                die_error(undef, "Invalid file parameter");
 320        }
 321}
 322
 323our $file_parent = $cgi->param('fp');
 324if (defined $file_parent) {
 325        if (!validate_pathname($file_parent)) {
 326                die_error(undef, "Invalid file parent parameter");
 327        }
 328}
 329
 330# parameters which are refnames
 331our $hash = $cgi->param('h');
 332if (defined $hash) {
 333        if (!validate_refname($hash)) {
 334                die_error(undef, "Invalid hash parameter");
 335        }
 336}
 337
 338our $hash_parent = $cgi->param('hp');
 339if (defined $hash_parent) {
 340        if (!validate_refname($hash_parent)) {
 341                die_error(undef, "Invalid hash parent parameter");
 342        }
 343}
 344
 345our $hash_base = $cgi->param('hb');
 346if (defined $hash_base) {
 347        if (!validate_refname($hash_base)) {
 348                die_error(undef, "Invalid hash base parameter");
 349        }
 350}
 351
 352our $hash_parent_base = $cgi->param('hpb');
 353if (defined $hash_parent_base) {
 354        if (!validate_refname($hash_parent_base)) {
 355                die_error(undef, "Invalid hash parent base parameter");
 356        }
 357}
 358
 359# other parameters
 360our $page = $cgi->param('pg');
 361if (defined $page) {
 362        if ($page =~ m/[^0-9]/) {
 363                die_error(undef, "Invalid page parameter");
 364        }
 365}
 366
 367our $searchtext = $cgi->param('s');
 368our $search_regexp;
 369if (defined $searchtext) {
 370        if ($searchtext =~ m/[^a-zA-Z0-9_\.\/\-\+\:\@ ]/) {
 371                die_error(undef, "Invalid search parameter");
 372        }
 373        if (length($searchtext) < 2) {
 374                die_error(undef, "At least two characters are required for search parameter");
 375        }
 376        $search_regexp = quotemeta $searchtext;
 377}
 378
 379our $searchtype = $cgi->param('st');
 380if (defined $searchtype) {
 381        if ($searchtype =~ m/[^a-z]/) {
 382                die_error(undef, "Invalid searchtype parameter");
 383        }
 384}
 385
 386# now read PATH_INFO and use it as alternative to parameters
 387sub evaluate_path_info {
 388        return if defined $project;
 389        my $path_info = $ENV{"PATH_INFO"};
 390        return if !$path_info;
 391        $path_info =~ s,^/+,,;
 392        return if !$path_info;
 393        # find which part of PATH_INFO is project
 394        $project = $path_info;
 395        $project =~ s,/+$,,;
 396        while ($project && !check_head_link("$projectroot/$project")) {
 397                $project =~ s,/*[^/]*$,,;
 398        }
 399        # validate project
 400        $project = validate_pathname($project);
 401        if (!$project ||
 402            ($export_ok && !-e "$projectroot/$project/$export_ok") ||
 403            ($strict_export && !project_in_list($project))) {
 404                undef $project;
 405                return;
 406        }
 407        # do not change any parameters if an action is given using the query string
 408        return if $action;
 409        $path_info =~ s,^$project/*,,;
 410        my ($refname, $pathname) = split(/:/, $path_info, 2);
 411        if (defined $pathname) {
 412                # we got "project.git/branch:filename" or "project.git/branch:dir/"
 413                # we could use git_get_type(branch:pathname), but it needs $git_dir
 414                $pathname =~ s,^/+,,;
 415                if (!$pathname || substr($pathname, -1) eq "/") {
 416                        $action  ||= "tree";
 417                        $pathname =~ s,/$,,;
 418                } else {
 419                        $action  ||= "blob_plain";
 420                }
 421                $hash_base ||= validate_refname($refname);
 422                $file_name ||= validate_pathname($pathname);
 423        } elsif (defined $refname) {
 424                # we got "project.git/branch"
 425                $action ||= "shortlog";
 426                $hash   ||= validate_refname($refname);
 427        }
 428}
 429evaluate_path_info();
 430
 431# path to the current git repository
 432our $git_dir;
 433$git_dir = "$projectroot/$project" if $project;
 434
 435# dispatch
 436my %actions = (
 437        "blame" => \&git_blame2,
 438        "blobdiff" => \&git_blobdiff,
 439        "blobdiff_plain" => \&git_blobdiff_plain,
 440        "blob" => \&git_blob,
 441        "blob_plain" => \&git_blob_plain,
 442        "commitdiff" => \&git_commitdiff,
 443        "commitdiff_plain" => \&git_commitdiff_plain,
 444        "commit" => \&git_commit,
 445        "forks" => \&git_forks,
 446        "heads" => \&git_heads,
 447        "history" => \&git_history,
 448        "log" => \&git_log,
 449        "rss" => \&git_rss,
 450        "atom" => \&git_atom,
 451        "search" => \&git_search,
 452        "search_help" => \&git_search_help,
 453        "shortlog" => \&git_shortlog,
 454        "summary" => \&git_summary,
 455        "tag" => \&git_tag,
 456        "tags" => \&git_tags,
 457        "tree" => \&git_tree,
 458        "snapshot" => \&git_snapshot,
 459        "object" => \&git_object,
 460        # those below don't need $project
 461        "opml" => \&git_opml,
 462        "project_list" => \&git_project_list,
 463        "project_index" => \&git_project_index,
 464);
 465
 466if (!defined $action) {
 467        if (defined $hash) {
 468                $action = git_get_type($hash);
 469        } elsif (defined $hash_base && defined $file_name) {
 470                $action = git_get_type("$hash_base:$file_name");
 471        } elsif (defined $project) {
 472                $action = 'summary';
 473        } else {
 474                $action = 'project_list';
 475        }
 476}
 477if (!defined($actions{$action})) {
 478        die_error(undef, "Unknown action");
 479}
 480if ($action !~ m/^(opml|project_list|project_index)$/ &&
 481    !$project) {
 482        die_error(undef, "Project needed");
 483}
 484$actions{$action}->();
 485exit;
 486
 487## ======================================================================
 488## action links
 489
 490sub href(%) {
 491        my %params = @_;
 492        # default is to use -absolute url() i.e. $my_uri
 493        my $href = $params{-full} ? $my_url : $my_uri;
 494
 495        # XXX: Warning: If you touch this, check the search form for updating,
 496        # too.
 497
 498        my @mapping = (
 499                project => "p",
 500                action => "a",
 501                file_name => "f",
 502                file_parent => "fp",
 503                hash => "h",
 504                hash_parent => "hp",
 505                hash_base => "hb",
 506                hash_parent_base => "hpb",
 507                page => "pg",
 508                order => "o",
 509                searchtext => "s",
 510                searchtype => "st",
 511        );
 512        my %mapping = @mapping;
 513
 514        $params{'project'} = $project unless exists $params{'project'};
 515
 516        my ($use_pathinfo) = gitweb_check_feature('pathinfo');
 517        if ($use_pathinfo) {
 518                # use PATH_INFO for project name
 519                $href .= "/$params{'project'}" if defined $params{'project'};
 520                delete $params{'project'};
 521
 522                # Summary just uses the project path URL
 523                if (defined $params{'action'} && $params{'action'} eq 'summary') {
 524                        delete $params{'action'};
 525                }
 526        }
 527
 528        # now encode the parameters explicitly
 529        my @result = ();
 530        for (my $i = 0; $i < @mapping; $i += 2) {
 531                my ($name, $symbol) = ($mapping[$i], $mapping[$i+1]);
 532                if (defined $params{$name}) {
 533                        push @result, $symbol . "=" . esc_param($params{$name});
 534                }
 535        }
 536        $href .= "?" . join(';', @result) if scalar @result;
 537
 538        return $href;
 539}
 540
 541
 542## ======================================================================
 543## validation, quoting/unquoting and escaping
 544
 545sub validate_pathname {
 546        my $input = shift || return undef;
 547
 548        # no '.' or '..' as elements of path, i.e. no '.' nor '..'
 549        # at the beginning, at the end, and between slashes.
 550        # also this catches doubled slashes
 551        if ($input =~ m!(^|/)(|\.|\.\.)(/|$)!) {
 552                return undef;
 553        }
 554        # no null characters
 555        if ($input =~ m!\0!) {
 556                return undef;
 557        }
 558        return $input;
 559}
 560
 561sub validate_refname {
 562        my $input = shift || return undef;
 563
 564        # textual hashes are O.K.
 565        if ($input =~ m/^[0-9a-fA-F]{40}$/) {
 566                return $input;
 567        }
 568        # it must be correct pathname
 569        $input = validate_pathname($input)
 570                or return undef;
 571        # restrictions on ref name according to git-check-ref-format
 572        if ($input =~ m!(/\.|\.\.|[\000-\040\177 ~^:?*\[]|/$)!) {
 573                return undef;
 574        }
 575        return $input;
 576}
 577
 578# quote unsafe chars, but keep the slash, even when it's not
 579# correct, but quoted slashes look too horrible in bookmarks
 580sub esc_param {
 581        my $str = shift;
 582        $str =~ s/([^A-Za-z0-9\-_.~()\/:@])/sprintf("%%%02X", ord($1))/eg;
 583        $str =~ s/\+/%2B/g;
 584        $str =~ s/ /\+/g;
 585        return $str;
 586}
 587
 588# quote unsafe chars in whole URL, so some charactrs cannot be quoted
 589sub esc_url {
 590        my $str = shift;
 591        $str =~ s/([^A-Za-z0-9\-_.~();\/;?:@&=])/sprintf("%%%02X", ord($1))/eg;
 592        $str =~ s/\+/%2B/g;
 593        $str =~ s/ /\+/g;
 594        return $str;
 595}
 596
 597# replace invalid utf8 character with SUBSTITUTION sequence
 598sub esc_html ($;%) {
 599        my $str = shift;
 600        my %opts = @_;
 601
 602        $str = decode_utf8($str);
 603        $str = $cgi->escapeHTML($str);
 604        if ($opts{'-nbsp'}) {
 605                $str =~ s/ /&nbsp;/g;
 606        }
 607        $str =~ s|([[:cntrl:]])|(($1 ne "\t") ? quot_cec($1) : $1)|eg;
 608        return $str;
 609}
 610
 611# quote control characters and escape filename to HTML
 612sub esc_path {
 613        my $str = shift;
 614        my %opts = @_;
 615
 616        $str = decode_utf8($str);
 617        $str = $cgi->escapeHTML($str);
 618        if ($opts{'-nbsp'}) {
 619                $str =~ s/ /&nbsp;/g;
 620        }
 621        $str =~ s|([[:cntrl:]])|quot_cec($1)|eg;
 622        return $str;
 623}
 624
 625# Make control characters "printable", using character escape codes (CEC)
 626sub quot_cec {
 627        my $cntrl = shift;
 628        my %es = ( # character escape codes, aka escape sequences
 629                   "\t" => '\t',   # tab            (HT)
 630                   "\n" => '\n',   # line feed      (LF)
 631                   "\r" => '\r',   # carrige return (CR)
 632                   "\f" => '\f',   # form feed      (FF)
 633                   "\b" => '\b',   # backspace      (BS)
 634                   "\a" => '\a',   # alarm (bell)   (BEL)
 635                   "\e" => '\e',   # escape         (ESC)
 636                   "\013" => '\v', # vertical tab   (VT)
 637                   "\000" => '\0', # nul character  (NUL)
 638                   );
 639        my $chr = ( (exists $es{$cntrl})
 640                    ? $es{$cntrl}
 641                    : sprintf('\%03o', ord($cntrl)) );
 642        return "<span class=\"cntrl\">$chr</span>";
 643}
 644
 645# Alternatively use unicode control pictures codepoints,
 646# Unicode "printable representation" (PR)
 647sub quot_upr {
 648        my $cntrl = shift;
 649        my $chr = sprintf('&#%04d;', 0x2400+ord($cntrl));
 650        return "<span class=\"cntrl\">$chr</span>";
 651}
 652
 653# git may return quoted and escaped filenames
 654sub unquote {
 655        my $str = shift;
 656
 657        sub unq {
 658                my $seq = shift;
 659                my %es = ( # character escape codes, aka escape sequences
 660                        't' => "\t",   # tab            (HT, TAB)
 661                        'n' => "\n",   # newline        (NL)
 662                        'r' => "\r",   # return         (CR)
 663                        'f' => "\f",   # form feed      (FF)
 664                        'b' => "\b",   # backspace      (BS)
 665                        'a' => "\a",   # alarm (bell)   (BEL)
 666                        'e' => "\e",   # escape         (ESC)
 667                        'v' => "\013", # vertical tab   (VT)
 668                );
 669
 670                if ($seq =~ m/^[0-7]{1,3}$/) {
 671                        # octal char sequence
 672                        return chr(oct($seq));
 673                } elsif (exists $es{$seq}) {
 674                        # C escape sequence, aka character escape code
 675                        return $es{$seq}
 676                }
 677                # quoted ordinary character
 678                return $seq;
 679        }
 680
 681        if ($str =~ m/^"(.*)"$/) {
 682                # needs unquoting
 683                $str = $1;
 684                $str =~ s/\\([^0-7]|[0-7]{1,3})/unq($1)/eg;
 685        }
 686        return $str;
 687}
 688
 689# escape tabs (convert tabs to spaces)
 690sub untabify {
 691        my $line = shift;
 692
 693        while ((my $pos = index($line, "\t")) != -1) {
 694                if (my $count = (8 - ($pos % 8))) {
 695                        my $spaces = ' ' x $count;
 696                        $line =~ s/\t/$spaces/;
 697                }
 698        }
 699
 700        return $line;
 701}
 702
 703sub project_in_list {
 704        my $project = shift;
 705        my @list = git_get_projects_list();
 706        return @list && scalar(grep { $_->{'path'} eq $project } @list);
 707}
 708
 709## ----------------------------------------------------------------------
 710## HTML aware string manipulation
 711
 712sub chop_str {
 713        my $str = shift;
 714        my $len = shift;
 715        my $add_len = shift || 10;
 716
 717        # allow only $len chars, but don't cut a word if it would fit in $add_len
 718        # if it doesn't fit, cut it if it's still longer than the dots we would add
 719        $str =~ m/^(.{0,$len}[^ \/\-_:\.@]{0,$add_len})(.*)/;
 720        my $body = $1;
 721        my $tail = $2;
 722        if (length($tail) > 4) {
 723                $tail = " ...";
 724                $body =~ s/&[^;]*$//; # remove chopped character entities
 725        }
 726        return "$body$tail";
 727}
 728
 729## ----------------------------------------------------------------------
 730## functions returning short strings
 731
 732# CSS class for given age value (in seconds)
 733sub age_class {
 734        my $age = shift;
 735
 736        if (!defined $age) {
 737                return "noage";
 738        } elsif ($age < 60*60*2) {
 739                return "age0";
 740        } elsif ($age < 60*60*24*2) {
 741                return "age1";
 742        } else {
 743                return "age2";
 744        }
 745}
 746
 747# convert age in seconds to "nn units ago" string
 748sub age_string {
 749        my $age = shift;
 750        my $age_str;
 751
 752        if ($age > 60*60*24*365*2) {
 753                $age_str = (int $age/60/60/24/365);
 754                $age_str .= " years ago";
 755        } elsif ($age > 60*60*24*(365/12)*2) {
 756                $age_str = int $age/60/60/24/(365/12);
 757                $age_str .= " months ago";
 758        } elsif ($age > 60*60*24*7*2) {
 759                $age_str = int $age/60/60/24/7;
 760                $age_str .= " weeks ago";
 761        } elsif ($age > 60*60*24*2) {
 762                $age_str = int $age/60/60/24;
 763                $age_str .= " days ago";
 764        } elsif ($age > 60*60*2) {
 765                $age_str = int $age/60/60;
 766                $age_str .= " hours ago";
 767        } elsif ($age > 60*2) {
 768                $age_str = int $age/60;
 769                $age_str .= " min ago";
 770        } elsif ($age > 2) {
 771                $age_str = int $age;
 772                $age_str .= " sec ago";
 773        } else {
 774                $age_str .= " right now";
 775        }
 776        return $age_str;
 777}
 778
 779# convert file mode in octal to symbolic file mode string
 780sub mode_str {
 781        my $mode = oct shift;
 782
 783        if (S_ISDIR($mode & S_IFMT)) {
 784                return 'drwxr-xr-x';
 785        } elsif (S_ISLNK($mode)) {
 786                return 'lrwxrwxrwx';
 787        } elsif (S_ISREG($mode)) {
 788                # git cares only about the executable bit
 789                if ($mode & S_IXUSR) {
 790                        return '-rwxr-xr-x';
 791                } else {
 792                        return '-rw-r--r--';
 793                };
 794        } else {
 795                return '----------';
 796        }
 797}
 798
 799# convert file mode in octal to file type string
 800sub file_type {
 801        my $mode = shift;
 802
 803        if ($mode !~ m/^[0-7]+$/) {
 804                return $mode;
 805        } else {
 806                $mode = oct $mode;
 807        }
 808
 809        if (S_ISDIR($mode & S_IFMT)) {
 810                return "directory";
 811        } elsif (S_ISLNK($mode)) {
 812                return "symlink";
 813        } elsif (S_ISREG($mode)) {
 814                return "file";
 815        } else {
 816                return "unknown";
 817        }
 818}
 819
 820# convert file mode in octal to file type description string
 821sub file_type_long {
 822        my $mode = shift;
 823
 824        if ($mode !~ m/^[0-7]+$/) {
 825                return $mode;
 826        } else {
 827                $mode = oct $mode;
 828        }
 829
 830        if (S_ISDIR($mode & S_IFMT)) {
 831                return "directory";
 832        } elsif (S_ISLNK($mode)) {
 833                return "symlink";
 834        } elsif (S_ISREG($mode)) {
 835                if ($mode & S_IXUSR) {
 836                        return "executable";
 837                } else {
 838                        return "file";
 839                };
 840        } else {
 841                return "unknown";
 842        }
 843}
 844
 845
 846## ----------------------------------------------------------------------
 847## functions returning short HTML fragments, or transforming HTML fragments
 848## which don't belong to other sections
 849
 850# format line of commit message.
 851sub format_log_line_html {
 852        my $line = shift;
 853
 854        $line = esc_html($line, -nbsp=>1);
 855        if ($line =~ m/([0-9a-fA-F]{8,40})/) {
 856                my $hash_text = $1;
 857                my $link =
 858                        $cgi->a({-href => href(action=>"object", hash=>$hash_text),
 859                                -class => "text"}, $hash_text);
 860                $line =~ s/$hash_text/$link/;
 861        }
 862        return $line;
 863}
 864
 865# format marker of refs pointing to given object
 866sub format_ref_marker {
 867        my ($refs, $id) = @_;
 868        my $markers = '';
 869
 870        if (defined $refs->{$id}) {
 871                foreach my $ref (@{$refs->{$id}}) {
 872                        my ($type, $name) = qw();
 873                        # e.g. tags/v2.6.11 or heads/next
 874                        if ($ref =~ m!^(.*?)s?/(.*)$!) {
 875                                $type = $1;
 876                                $name = $2;
 877                        } else {
 878                                $type = "ref";
 879                                $name = $ref;
 880                        }
 881
 882                        $markers .= " <span class=\"$type\" title=\"$ref\">" .
 883                                    esc_html($name) . "</span>";
 884                }
 885        }
 886
 887        if ($markers) {
 888                return ' <span class="refs">'. $markers . '</span>';
 889        } else {
 890                return "";
 891        }
 892}
 893
 894# format, perhaps shortened and with markers, title line
 895sub format_subject_html {
 896        my ($long, $short, $href, $extra) = @_;
 897        $extra = '' unless defined($extra);
 898
 899        if (length($short) < length($long)) {
 900                return $cgi->a({-href => $href, -class => "list subject",
 901                                -title => decode_utf8($long)},
 902                       esc_html($short) . $extra);
 903        } else {
 904                return $cgi->a({-href => $href, -class => "list subject"},
 905                       esc_html($long)  . $extra);
 906        }
 907}
 908
 909# format patch (diff) line (rather not to be used for diff headers)
 910sub format_diff_line {
 911        my $line = shift;
 912        my ($from, $to) = @_;
 913        my $diff_class = "";
 914
 915        chomp $line;
 916
 917        if ($from && $to && ref($from->{'href'}) eq "ARRAY") {
 918                # combined diff
 919                my $prefix = substr($line, 0, scalar @{$from->{'href'}});
 920                if ($line =~ m/^\@{3}/) {
 921                        $diff_class = " chunk_header";
 922                } elsif ($line =~ m/^\\/) {
 923                        $diff_class = " incomplete";
 924                } elsif ($prefix =~ tr/+/+/) {
 925                        $diff_class = " add";
 926                } elsif ($prefix =~ tr/-/-/) {
 927                        $diff_class = " rem";
 928                }
 929        } else {
 930                # assume ordinary diff
 931                my $char = substr($line, 0, 1);
 932                if ($char eq '+') {
 933                        $diff_class = " add";
 934                } elsif ($char eq '-') {
 935                        $diff_class = " rem";
 936                } elsif ($char eq '@') {
 937                        $diff_class = " chunk_header";
 938                } elsif ($char eq "\\") {
 939                        $diff_class = " incomplete";
 940                }
 941        }
 942        $line = untabify($line);
 943        if ($from && $to && $line =~ m/^\@{2} /) {
 944                my ($from_text, $from_start, $from_lines, $to_text, $to_start, $to_lines, $section) =
 945                        $line =~ m/^\@{2} (-(\d+)(?:,(\d+))?) (\+(\d+)(?:,(\d+))?) \@{2}(.*)$/;
 946
 947                $from_lines = 0 unless defined $from_lines;
 948                $to_lines   = 0 unless defined $to_lines;
 949
 950                if ($from->{'href'}) {
 951                        $from_text = $cgi->a({-href=>"$from->{'href'}#l$from_start",
 952                                             -class=>"list"}, $from_text);
 953                }
 954                if ($to->{'href'}) {
 955                        $to_text   = $cgi->a({-href=>"$to->{'href'}#l$to_start",
 956                                             -class=>"list"}, $to_text);
 957                }
 958                $line = "<span class=\"chunk_info\">@@ $from_text $to_text @@</span>" .
 959                        "<span class=\"section\">" . esc_html($section, -nbsp=>1) . "</span>";
 960                return "<div class=\"diff$diff_class\">$line</div>\n";
 961        } elsif ($from && $to && $line =~ m/^\@{3}/) {
 962                my ($prefix, $ranges, $section) = $line =~ m/^(\@+) (.*?) \@+(.*)$/;
 963                my (@from_text, @from_start, @from_nlines, $to_text, $to_start, $to_nlines);
 964
 965                @from_text = split(' ', $ranges);
 966                for (my $i = 0; $i < @from_text; ++$i) {
 967                        ($from_start[$i], $from_nlines[$i]) =
 968                                (split(',', substr($from_text[$i], 1)), 0);
 969                }
 970
 971                $to_text   = pop @from_text;
 972                $to_start  = pop @from_start;
 973                $to_nlines = pop @from_nlines;
 974
 975                $line = "<span class=\"chunk_info\">$prefix ";
 976                for (my $i = 0; $i < @from_text; ++$i) {
 977                        if ($from->{'href'}[$i]) {
 978                                $line .= $cgi->a({-href=>"$from->{'href'}[$i]#l$from_start[$i]",
 979                                                  -class=>"list"}, $from_text[$i]);
 980                        } else {
 981                                $line .= $from_text[$i];
 982                        }
 983                        $line .= " ";
 984                }
 985                if ($to->{'href'}) {
 986                        $line .= $cgi->a({-href=>"$to->{'href'}#l$to_start",
 987                                          -class=>"list"}, $to_text);
 988                } else {
 989                        $line .= $to_text;
 990                }
 991                $line .= " $prefix</span>" .
 992                         "<span class=\"section\">" . esc_html($section, -nbsp=>1) . "</span>";
 993                return "<div class=\"diff$diff_class\">$line</div>\n";
 994        }
 995        return "<div class=\"diff$diff_class\">" . esc_html($line, -nbsp=>1) . "</div>\n";
 996}
 997
 998## ----------------------------------------------------------------------
 999## git utility subroutines, invoking git commands
1000
1001# returns path to the core git executable and the --git-dir parameter as list
1002sub git_cmd {
1003        return $GIT, '--git-dir='.$git_dir;
1004}
1005
1006# returns path to the core git executable and the --git-dir parameter as string
1007sub git_cmd_str {
1008        return join(' ', git_cmd());
1009}
1010
1011# get HEAD ref of given project as hash
1012sub git_get_head_hash {
1013        my $project = shift;
1014        my $o_git_dir = $git_dir;
1015        my $retval = undef;
1016        $git_dir = "$projectroot/$project";
1017        if (open my $fd, "-|", git_cmd(), "rev-parse", "--verify", "HEAD") {
1018                my $head = <$fd>;
1019                close $fd;
1020                if (defined $head && $head =~ /^([0-9a-fA-F]{40})$/) {
1021                        $retval = $1;
1022                }
1023        }
1024        if (defined $o_git_dir) {
1025                $git_dir = $o_git_dir;
1026        }
1027        return $retval;
1028}
1029
1030# get type of given object
1031sub git_get_type {
1032        my $hash = shift;
1033
1034        open my $fd, "-|", git_cmd(), "cat-file", '-t', $hash or return;
1035        my $type = <$fd>;
1036        close $fd or return;
1037        chomp $type;
1038        return $type;
1039}
1040
1041sub git_get_project_config {
1042        my ($key, $type) = @_;
1043
1044        return unless ($key);
1045        $key =~ s/^gitweb\.//;
1046        return if ($key =~ m/\W/);
1047
1048        my @x = (git_cmd(), 'config');
1049        if (defined $type) { push @x, $type; }
1050        push @x, "--get";
1051        push @x, "gitweb.$key";
1052        my $val = qx(@x);
1053        chomp $val;
1054        return ($val);
1055}
1056
1057# get hash of given path at given ref
1058sub git_get_hash_by_path {
1059        my $base = shift;
1060        my $path = shift || return undef;
1061        my $type = shift;
1062
1063        $path =~ s,/+$,,;
1064
1065        open my $fd, "-|", git_cmd(), "ls-tree", $base, "--", $path
1066                or die_error(undef, "Open git-ls-tree failed");
1067        my $line = <$fd>;
1068        close $fd or return undef;
1069
1070        if (!defined $line) {
1071                # there is no tree or hash given by $path at $base
1072                return undef;
1073        }
1074
1075        #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
1076        $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t/;
1077        if (defined $type && $type ne $2) {
1078                # type doesn't match
1079                return undef;
1080        }
1081        return $3;
1082}
1083
1084# get path of entry with given hash at given tree-ish (ref)
1085# used to get 'from' filename for combined diff (merge commit) for renames
1086sub git_get_path_by_hash {
1087        my $base = shift || return;
1088        my $hash = shift || return;
1089
1090        local $/ = "\0";
1091
1092        open my $fd, "-|", git_cmd(), "ls-tree", '-r', '-t', '-z', $base
1093                or return undef;
1094        while (my $line = <$fd>) {
1095                chomp $line;
1096
1097                #'040000 tree 595596a6a9117ddba9fe379b6b012b558bac8423  gitweb'
1098                #'100644 blob e02e90f0429be0d2a69b76571101f20b8f75530f  gitweb/README'
1099                if ($line =~ m/(?:[0-9]+) (?:.+) $hash\t(.+)$/) {
1100                        close $fd;
1101                        return $1;
1102                }
1103        }
1104        close $fd;
1105        return undef;
1106}
1107
1108## ......................................................................
1109## git utility functions, directly accessing git repository
1110
1111sub git_get_project_description {
1112        my $path = shift;
1113
1114        open my $fd, "$projectroot/$path/description" or return undef;
1115        my $descr = <$fd>;
1116        close $fd;
1117        if (defined $descr) {
1118                chomp $descr;
1119        }
1120        return $descr;
1121}
1122
1123sub git_get_project_url_list {
1124        my $path = shift;
1125
1126        open my $fd, "$projectroot/$path/cloneurl" or return;
1127        my @git_project_url_list = map { chomp; $_ } <$fd>;
1128        close $fd;
1129
1130        return wantarray ? @git_project_url_list : \@git_project_url_list;
1131}
1132
1133sub git_get_projects_list {
1134        my ($filter) = @_;
1135        my @list;
1136
1137        $filter ||= '';
1138        $filter =~ s/\.git$//;
1139
1140        my ($check_forks) = gitweb_check_feature('forks');
1141
1142        if (-d $projects_list) {
1143                # search in directory
1144                my $dir = $projects_list . ($filter ? "/$filter" : '');
1145                # remove the trailing "/"
1146                $dir =~ s!/+$!!;
1147                my $pfxlen = length("$dir");
1148
1149                File::Find::find({
1150                        follow_fast => 1, # follow symbolic links
1151                        dangling_symlinks => 0, # ignore dangling symlinks, silently
1152                        wanted => sub {
1153                                # skip project-list toplevel, if we get it.
1154                                return if (m!^[/.]$!);
1155                                # only directories can be git repositories
1156                                return unless (-d $_);
1157
1158                                my $subdir = substr($File::Find::name, $pfxlen + 1);
1159                                # we check related file in $projectroot
1160                                if ($check_forks and $subdir =~ m#/.#) {
1161                                        $File::Find::prune = 1;
1162                                } elsif (check_export_ok("$projectroot/$filter/$subdir")) {
1163                                        push @list, { path => ($filter ? "$filter/" : '') . $subdir };
1164                                        $File::Find::prune = 1;
1165                                }
1166                        },
1167                }, "$dir");
1168
1169        } elsif (-f $projects_list) {
1170                # read from file(url-encoded):
1171                # 'git%2Fgit.git Linus+Torvalds'
1172                # 'libs%2Fklibc%2Fklibc.git H.+Peter+Anvin'
1173                # 'linux%2Fhotplug%2Fudev.git Greg+Kroah-Hartman'
1174                my %paths;
1175                open my ($fd), $projects_list or return;
1176        PROJECT:
1177                while (my $line = <$fd>) {
1178                        chomp $line;
1179                        my ($path, $owner) = split ' ', $line;
1180                        $path = unescape($path);
1181                        $owner = unescape($owner);
1182                        if (!defined $path) {
1183                                next;
1184                        }
1185                        if ($filter ne '') {
1186                                # looking for forks;
1187                                my $pfx = substr($path, 0, length($filter));
1188                                if ($pfx ne $filter) {
1189                                        next PROJECT;
1190                                }
1191                                my $sfx = substr($path, length($filter));
1192                                if ($sfx !~ /^\/.*\.git$/) {
1193                                        next PROJECT;
1194                                }
1195                        } elsif ($check_forks) {
1196                        PATH:
1197                                foreach my $filter (keys %paths) {
1198                                        # looking for forks;
1199                                        my $pfx = substr($path, 0, length($filter));
1200                                        if ($pfx ne $filter) {
1201                                                next PATH;
1202                                        }
1203                                        my $sfx = substr($path, length($filter));
1204                                        if ($sfx !~ /^\/.*\.git$/) {
1205                                                next PATH;
1206                                        }
1207                                        # is a fork, don't include it in
1208                                        # the list
1209                                        next PROJECT;
1210                                }
1211                        }
1212                        if (check_export_ok("$projectroot/$path")) {
1213                                my $pr = {
1214                                        path => $path,
1215                                        owner => decode_utf8($owner),
1216                                };
1217                                push @list, $pr;
1218                                (my $forks_path = $path) =~ s/\.git$//;
1219                                $paths{$forks_path}++;
1220                        }
1221                }
1222                close $fd;
1223        }
1224        return @list;
1225}
1226
1227sub git_get_project_owner {
1228        my $project = shift;
1229        my $owner;
1230
1231        return undef unless $project;
1232
1233        # read from file (url-encoded):
1234        # 'git%2Fgit.git Linus+Torvalds'
1235        # 'libs%2Fklibc%2Fklibc.git H.+Peter+Anvin'
1236        # 'linux%2Fhotplug%2Fudev.git Greg+Kroah-Hartman'
1237        if (-f $projects_list) {
1238                open (my $fd , $projects_list);
1239                while (my $line = <$fd>) {
1240                        chomp $line;
1241                        my ($pr, $ow) = split ' ', $line;
1242                        $pr = unescape($pr);
1243                        $ow = unescape($ow);
1244                        if ($pr eq $project) {
1245                                $owner = decode_utf8($ow);
1246                                last;
1247                        }
1248                }
1249                close $fd;
1250        }
1251        if (!defined $owner) {
1252                $owner = get_file_owner("$projectroot/$project");
1253        }
1254
1255        return $owner;
1256}
1257
1258sub git_get_last_activity {
1259        my ($path) = @_;
1260        my $fd;
1261
1262        $git_dir = "$projectroot/$path";
1263        open($fd, "-|", git_cmd(), 'for-each-ref',
1264             '--format=%(committer)',
1265             '--sort=-committerdate',
1266             '--count=1',
1267             'refs/heads') or return;
1268        my $most_recent = <$fd>;
1269        close $fd or return;
1270        if (defined $most_recent &&
1271            $most_recent =~ / (\d+) [-+][01]\d\d\d$/) {
1272                my $timestamp = $1;
1273                my $age = time - $timestamp;
1274                return ($age, age_string($age));
1275        }
1276}
1277
1278sub git_get_references {
1279        my $type = shift || "";
1280        my %refs;
1281        # 5dc01c595e6c6ec9ccda4f6f69c131c0dd945f8c refs/tags/v2.6.11
1282        # c39ae07f393806ccf406ef966e9a15afc43cc36a refs/tags/v2.6.11^{}
1283        open my $fd, "-|", git_cmd(), "show-ref", "--dereference",
1284                ($type ? ("--", "refs/$type") : ()) # use -- <pattern> if $type
1285                or return;
1286
1287        while (my $line = <$fd>) {
1288                chomp $line;
1289                if ($line =~ m!^([0-9a-fA-F]{40})\srefs/($type/?[^^]+)!) {
1290                        if (defined $refs{$1}) {
1291                                push @{$refs{$1}}, $2;
1292                        } else {
1293                                $refs{$1} = [ $2 ];
1294                        }
1295                }
1296        }
1297        close $fd or return;
1298        return \%refs;
1299}
1300
1301sub git_get_rev_name_tags {
1302        my $hash = shift || return undef;
1303
1304        open my $fd, "-|", git_cmd(), "name-rev", "--tags", $hash
1305                or return;
1306        my $name_rev = <$fd>;
1307        close $fd;
1308
1309        if ($name_rev =~ m|^$hash tags/(.*)$|) {
1310                return $1;
1311        } else {
1312                # catches also '$hash undefined' output
1313                return undef;
1314        }
1315}
1316
1317## ----------------------------------------------------------------------
1318## parse to hash functions
1319
1320sub parse_date {
1321        my $epoch = shift;
1322        my $tz = shift || "-0000";
1323
1324        my %date;
1325        my @months = ("Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec");
1326        my @days = ("Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat");
1327        my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($epoch);
1328        $date{'hour'} = $hour;
1329        $date{'minute'} = $min;
1330        $date{'mday'} = $mday;
1331        $date{'day'} = $days[$wday];
1332        $date{'month'} = $months[$mon];
1333        $date{'rfc2822'}   = sprintf "%s, %d %s %4d %02d:%02d:%02d +0000",
1334                             $days[$wday], $mday, $months[$mon], 1900+$year, $hour ,$min, $sec;
1335        $date{'mday-time'} = sprintf "%d %s %02d:%02d",
1336                             $mday, $months[$mon], $hour ,$min;
1337        $date{'iso-8601'}  = sprintf "%04d-%02d-%02dT%02d:%02d:%02dZ",
1338                             1900+$year, $mon, $mday, $hour ,$min, $sec;
1339
1340        $tz =~ m/^([+\-][0-9][0-9])([0-9][0-9])$/;
1341        my $local = $epoch + ((int $1 + ($2/60)) * 3600);
1342        ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($local);
1343        $date{'hour_local'} = $hour;
1344        $date{'minute_local'} = $min;
1345        $date{'tz_local'} = $tz;
1346        $date{'iso-tz'} = sprintf("%04d-%02d-%02d %02d:%02d:%02d %s",
1347                                  1900+$year, $mon+1, $mday,
1348                                  $hour, $min, $sec, $tz);
1349        return %date;
1350}
1351
1352sub parse_tag {
1353        my $tag_id = shift;
1354        my %tag;
1355        my @comment;
1356
1357        open my $fd, "-|", git_cmd(), "cat-file", "tag", $tag_id or return;
1358        $tag{'id'} = $tag_id;
1359        while (my $line = <$fd>) {
1360                chomp $line;
1361                if ($line =~ m/^object ([0-9a-fA-F]{40})$/) {
1362                        $tag{'object'} = $1;
1363                } elsif ($line =~ m/^type (.+)$/) {
1364                        $tag{'type'} = $1;
1365                } elsif ($line =~ m/^tag (.+)$/) {
1366                        $tag{'name'} = $1;
1367                } elsif ($line =~ m/^tagger (.*) ([0-9]+) (.*)$/) {
1368                        $tag{'author'} = $1;
1369                        $tag{'epoch'} = $2;
1370                        $tag{'tz'} = $3;
1371                } elsif ($line =~ m/--BEGIN/) {
1372                        push @comment, $line;
1373                        last;
1374                } elsif ($line eq "") {
1375                        last;
1376                }
1377        }
1378        push @comment, <$fd>;
1379        $tag{'comment'} = \@comment;
1380        close $fd or return;
1381        if (!defined $tag{'name'}) {
1382                return
1383        };
1384        return %tag
1385}
1386
1387sub parse_commit_text {
1388        my ($commit_text, $withparents) = @_;
1389        my @commit_lines = split '\n', $commit_text;
1390        my %co;
1391
1392        pop @commit_lines; # Remove '\0'
1393
1394        if (! @commit_lines) {
1395                return;
1396        }
1397
1398        my $header = shift @commit_lines;
1399        if ($header !~ m/^[0-9a-fA-F]{40}/) {
1400                return;
1401        }
1402        ($co{'id'}, my @parents) = split ' ', $header;
1403        while (my $line = shift @commit_lines) {
1404                last if $line eq "\n";
1405                if ($line =~ m/^tree ([0-9a-fA-F]{40})$/) {
1406                        $co{'tree'} = $1;
1407                } elsif ((!defined $withparents) && ($line =~ m/^parent ([0-9a-fA-F]{40})$/)) {
1408                        push @parents, $1;
1409                } elsif ($line =~ m/^author (.*) ([0-9]+) (.*)$/) {
1410                        $co{'author'} = $1;
1411                        $co{'author_epoch'} = $2;
1412                        $co{'author_tz'} = $3;
1413                        if ($co{'author'} =~ m/^([^<]+) <([^>]*)>/) {
1414                                $co{'author_name'}  = $1;
1415                                $co{'author_email'} = $2;
1416                        } else {
1417                                $co{'author_name'} = $co{'author'};
1418                        }
1419                } elsif ($line =~ m/^committer (.*) ([0-9]+) (.*)$/) {
1420                        $co{'committer'} = $1;
1421                        $co{'committer_epoch'} = $2;
1422                        $co{'committer_tz'} = $3;
1423                        $co{'committer_name'} = $co{'committer'};
1424                        if ($co{'committer'} =~ m/^([^<]+) <([^>]*)>/) {
1425                                $co{'committer_name'}  = $1;
1426                                $co{'committer_email'} = $2;
1427                        } else {
1428                                $co{'committer_name'} = $co{'committer'};
1429                        }
1430                }
1431        }
1432        if (!defined $co{'tree'}) {
1433                return;
1434        };
1435        $co{'parents'} = \@parents;
1436        $co{'parent'} = $parents[0];
1437
1438        foreach my $title (@commit_lines) {
1439                $title =~ s/^    //;
1440                if ($title ne "") {
1441                        $co{'title'} = chop_str($title, 80, 5);
1442                        # remove leading stuff of merges to make the interesting part visible
1443                        if (length($title) > 50) {
1444                                $title =~ s/^Automatic //;
1445                                $title =~ s/^merge (of|with) /Merge ... /i;
1446                                if (length($title) > 50) {
1447                                        $title =~ s/(http|rsync):\/\///;
1448                                }
1449                                if (length($title) > 50) {
1450                                        $title =~ s/(master|www|rsync)\.//;
1451                                }
1452                                if (length($title) > 50) {
1453                                        $title =~ s/kernel.org:?//;
1454                                }
1455                                if (length($title) > 50) {
1456                                        $title =~ s/\/pub\/scm//;
1457                                }
1458                        }
1459                        $co{'title_short'} = chop_str($title, 50, 5);
1460                        last;
1461                }
1462        }
1463        if ($co{'title'} eq "") {
1464                $co{'title'} = $co{'title_short'} = '(no commit message)';
1465        }
1466        # remove added spaces
1467        foreach my $line (@commit_lines) {
1468                $line =~ s/^    //;
1469        }
1470        $co{'comment'} = \@commit_lines;
1471
1472        my $age = time - $co{'committer_epoch'};
1473        $co{'age'} = $age;
1474        $co{'age_string'} = age_string($age);
1475        my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($co{'committer_epoch'});
1476        if ($age > 60*60*24*7*2) {
1477                $co{'age_string_date'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
1478                $co{'age_string_age'} = $co{'age_string'};
1479        } else {
1480                $co{'age_string_date'} = $co{'age_string'};
1481                $co{'age_string_age'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
1482        }
1483        return %co;
1484}
1485
1486sub parse_commit {
1487        my ($commit_id) = @_;
1488        my %co;
1489
1490        local $/ = "\0";
1491
1492        open my $fd, "-|", git_cmd(), "rev-list",
1493                "--parents",
1494                "--header",
1495                "--max-count=1",
1496                $commit_id,
1497                "--",
1498                or die_error(undef, "Open git-rev-list failed");
1499        %co = parse_commit_text(<$fd>, 1);
1500        close $fd;
1501
1502        return %co;
1503}
1504
1505sub parse_commits {
1506        my ($commit_id, $maxcount, $skip, $arg, $filename) = @_;
1507        my @cos;
1508
1509        $maxcount ||= 1;
1510        $skip ||= 0;
1511
1512        local $/ = "\0";
1513
1514        open my $fd, "-|", git_cmd(), "rev-list",
1515                "--header",
1516                ($arg ? ($arg) : ()),
1517                ("--max-count=" . $maxcount),
1518                ("--skip=" . $skip),
1519                $commit_id,
1520                "--",
1521                ($filename ? ($filename) : ())
1522                or die_error(undef, "Open git-rev-list failed");
1523        while (my $line = <$fd>) {
1524                my %co = parse_commit_text($line);
1525                push @cos, \%co;
1526        }
1527        close $fd;
1528
1529        return wantarray ? @cos : \@cos;
1530}
1531
1532# parse ref from ref_file, given by ref_id, with given type
1533sub parse_ref {
1534        my $ref_file = shift;
1535        my $ref_id = shift;
1536        my $type = shift || git_get_type($ref_id);
1537        my %ref_item;
1538
1539        $ref_item{'type'} = $type;
1540        $ref_item{'id'} = $ref_id;
1541        $ref_item{'epoch'} = 0;
1542        $ref_item{'age'} = "unknown";
1543        if ($type eq "tag") {
1544                my %tag = parse_tag($ref_id);
1545                $ref_item{'comment'} = $tag{'comment'};
1546                if ($tag{'type'} eq "commit") {
1547                        my %co = parse_commit($tag{'object'});
1548                        $ref_item{'epoch'} = $co{'committer_epoch'};
1549                        $ref_item{'age'} = $co{'age_string'};
1550                } elsif (defined($tag{'epoch'})) {
1551                        my $age = time - $tag{'epoch'};
1552                        $ref_item{'epoch'} = $tag{'epoch'};
1553                        $ref_item{'age'} = age_string($age);
1554                }
1555                $ref_item{'reftype'} = $tag{'type'};
1556                $ref_item{'name'} = $tag{'name'};
1557                $ref_item{'refid'} = $tag{'object'};
1558        } elsif ($type eq "commit"){
1559                my %co = parse_commit($ref_id);
1560                $ref_item{'reftype'} = "commit";
1561                $ref_item{'name'} = $ref_file;
1562                $ref_item{'title'} = $co{'title'};
1563                $ref_item{'refid'} = $ref_id;
1564                $ref_item{'epoch'} = $co{'committer_epoch'};
1565                $ref_item{'age'} = $co{'age_string'};
1566        } else {
1567                $ref_item{'reftype'} = $type;
1568                $ref_item{'name'} = $ref_file;
1569                $ref_item{'refid'} = $ref_id;
1570        }
1571
1572        return %ref_item;
1573}
1574
1575# parse line of git-diff-tree "raw" output
1576sub parse_difftree_raw_line {
1577        my $line = shift;
1578        my %res;
1579
1580        # ':100644 100644 03b218260e99b78c6df0ed378e59ed9205ccc96d 3b93d5e7cc7f7dd4ebed13a5cc1a4ad976fc94d8 M   ls-files.c'
1581        # ':100644 100644 7f9281985086971d3877aca27704f2aaf9c448ce bc190ebc71bbd923f2b728e505408f5e54bd073a M   rev-tree.c'
1582        if ($line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)([0-9]{0,3})\t(.*)$/) {
1583                $res{'from_mode'} = $1;
1584                $res{'to_mode'} = $2;
1585                $res{'from_id'} = $3;
1586                $res{'to_id'} = $4;
1587                $res{'status'} = $5;
1588                $res{'similarity'} = $6;
1589                if ($res{'status'} eq 'R' || $res{'status'} eq 'C') { # renamed or copied
1590                        ($res{'from_file'}, $res{'to_file'}) = map { unquote($_) } split("\t", $7);
1591                } else {
1592                        $res{'file'} = unquote($7);
1593                }
1594        }
1595        # '::100755 100755 100755 60e79ca1b01bc8b057abe17ddab484699a7f5fdb 94067cc5f73388f33722d52ae02f44692bc07490 94067cc5f73388f33722d52ae02f44692bc07490 MR git-gui/git-gui.sh'
1596        # combined diff (for merge commit)
1597        elsif ($line =~ s/^(::+)((?:[0-7]{6} )+)((?:[0-9a-fA-F]{40} )+)([a-zA-Z]+)\t(.*)$//) {
1598                $res{'nparents'}  = length($1);
1599                $res{'from_mode'} = [ split(' ', $2) ];
1600                $res{'to_mode'} = pop @{$res{'from_mode'}};
1601                $res{'from_id'} = [ split(' ', $3) ];
1602                $res{'to_id'} = pop @{$res{'from_id'}};
1603                $res{'status'} = [ split('', $4) ];
1604                $res{'to_file'} = unquote($5);
1605        }
1606        # 'c512b523472485aef4fff9e57b229d9d243c967f'
1607        elsif ($line =~ m/^([0-9a-fA-F]{40})$/) {
1608                $res{'commit'} = $1;
1609        }
1610
1611        return wantarray ? %res : \%res;
1612}
1613
1614# parse line of git-ls-tree output
1615sub parse_ls_tree_line ($;%) {
1616        my $line = shift;
1617        my %opts = @_;
1618        my %res;
1619
1620        #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
1621        $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t(.+)$/s;
1622
1623        $res{'mode'} = $1;
1624        $res{'type'} = $2;
1625        $res{'hash'} = $3;
1626        if ($opts{'-z'}) {
1627                $res{'name'} = $4;
1628        } else {
1629                $res{'name'} = unquote($4);
1630        }
1631
1632        return wantarray ? %res : \%res;
1633}
1634
1635## ......................................................................
1636## parse to array of hashes functions
1637
1638sub git_get_heads_list {
1639        my $limit = shift;
1640        my @headslist;
1641
1642        open my $fd, '-|', git_cmd(), 'for-each-ref',
1643                ($limit ? '--count='.($limit+1) : ()), '--sort=-committerdate',
1644                '--format=%(objectname) %(refname) %(subject)%00%(committer)',
1645                'refs/heads'
1646                or return;
1647        while (my $line = <$fd>) {
1648                my %ref_item;
1649
1650                chomp $line;
1651                my ($refinfo, $committerinfo) = split(/\0/, $line);
1652                my ($hash, $name, $title) = split(' ', $refinfo, 3);
1653                my ($committer, $epoch, $tz) =
1654                        ($committerinfo =~ /^(.*) ([0-9]+) (.*)$/);
1655                $name =~ s!^refs/heads/!!;
1656
1657                $ref_item{'name'}  = $name;
1658                $ref_item{'id'}    = $hash;
1659                $ref_item{'title'} = $title || '(no commit message)';
1660                $ref_item{'epoch'} = $epoch;
1661                if ($epoch) {
1662                        $ref_item{'age'} = age_string(time - $ref_item{'epoch'});
1663                } else {
1664                        $ref_item{'age'} = "unknown";
1665                }
1666
1667                push @headslist, \%ref_item;
1668        }
1669        close $fd;
1670
1671        return wantarray ? @headslist : \@headslist;
1672}
1673
1674sub git_get_tags_list {
1675        my $limit = shift;
1676        my @tagslist;
1677
1678        open my $fd, '-|', git_cmd(), 'for-each-ref',
1679                ($limit ? '--count='.($limit+1) : ()), '--sort=-creatordate',
1680                '--format=%(objectname) %(objecttype) %(refname) '.
1681                '%(*objectname) %(*objecttype) %(subject)%00%(creator)',
1682                'refs/tags'
1683                or return;
1684        while (my $line = <$fd>) {
1685                my %ref_item;
1686
1687                chomp $line;
1688                my ($refinfo, $creatorinfo) = split(/\0/, $line);
1689                my ($id, $type, $name, $refid, $reftype, $title) = split(' ', $refinfo, 6);
1690                my ($creator, $epoch, $tz) =
1691                        ($creatorinfo =~ /^(.*) ([0-9]+) (.*)$/);
1692                $name =~ s!^refs/tags/!!;
1693
1694                $ref_item{'type'} = $type;
1695                $ref_item{'id'} = $id;
1696                $ref_item{'name'} = $name;
1697                if ($type eq "tag") {
1698                        $ref_item{'subject'} = $title;
1699                        $ref_item{'reftype'} = $reftype;
1700                        $ref_item{'refid'}   = $refid;
1701                } else {
1702                        $ref_item{'reftype'} = $type;
1703                        $ref_item{'refid'}   = $id;
1704                }
1705
1706                if ($type eq "tag" || $type eq "commit") {
1707                        $ref_item{'epoch'} = $epoch;
1708                        if ($epoch) {
1709                                $ref_item{'age'} = age_string(time - $ref_item{'epoch'});
1710                        } else {
1711                                $ref_item{'age'} = "unknown";
1712                        }
1713                }
1714
1715                push @tagslist, \%ref_item;
1716        }
1717        close $fd;
1718
1719        return wantarray ? @tagslist : \@tagslist;
1720}
1721
1722## ----------------------------------------------------------------------
1723## filesystem-related functions
1724
1725sub get_file_owner {
1726        my $path = shift;
1727
1728        my ($dev, $ino, $mode, $nlink, $st_uid, $st_gid, $rdev, $size) = stat($path);
1729        my ($name, $passwd, $uid, $gid, $quota, $comment, $gcos, $dir, $shell) = getpwuid($st_uid);
1730        if (!defined $gcos) {
1731                return undef;
1732        }
1733        my $owner = $gcos;
1734        $owner =~ s/[,;].*$//;
1735        return decode_utf8($owner);
1736}
1737
1738## ......................................................................
1739## mimetype related functions
1740
1741sub mimetype_guess_file {
1742        my $filename = shift;
1743        my $mimemap = shift;
1744        -r $mimemap or return undef;
1745
1746        my %mimemap;
1747        open(MIME, $mimemap) or return undef;
1748        while (<MIME>) {
1749                next if m/^#/; # skip comments
1750                my ($mime, $exts) = split(/\t+/);
1751                if (defined $exts) {
1752                        my @exts = split(/\s+/, $exts);
1753                        foreach my $ext (@exts) {
1754                                $mimemap{$ext} = $mime;
1755                        }
1756                }
1757        }
1758        close(MIME);
1759
1760        $filename =~ /\.([^.]*)$/;
1761        return $mimemap{$1};
1762}
1763
1764sub mimetype_guess {
1765        my $filename = shift;
1766        my $mime;
1767        $filename =~ /\./ or return undef;
1768
1769        if ($mimetypes_file) {
1770                my $file = $mimetypes_file;
1771                if ($file !~ m!^/!) { # if it is relative path
1772                        # it is relative to project
1773                        $file = "$projectroot/$project/$file";
1774                }
1775                $mime = mimetype_guess_file($filename, $file);
1776        }
1777        $mime ||= mimetype_guess_file($filename, '/etc/mime.types');
1778        return $mime;
1779}
1780
1781sub blob_mimetype {
1782        my $fd = shift;
1783        my $filename = shift;
1784
1785        if ($filename) {
1786                my $mime = mimetype_guess($filename);
1787                $mime and return $mime;
1788        }
1789
1790        # just in case
1791        return $default_blob_plain_mimetype unless $fd;
1792
1793        if (-T $fd) {
1794                return 'text/plain' .
1795                       ($default_text_plain_charset ? '; charset='.$default_text_plain_charset : '');
1796        } elsif (! $filename) {
1797                return 'application/octet-stream';
1798        } elsif ($filename =~ m/\.png$/i) {
1799                return 'image/png';
1800        } elsif ($filename =~ m/\.gif$/i) {
1801                return 'image/gif';
1802        } elsif ($filename =~ m/\.jpe?g$/i) {
1803                return 'image/jpeg';
1804        } else {
1805                return 'application/octet-stream';
1806        }
1807}
1808
1809## ======================================================================
1810## functions printing HTML: header, footer, error page
1811
1812sub git_header_html {
1813        my $status = shift || "200 OK";
1814        my $expires = shift;
1815
1816        my $title = "$site_name";
1817        if (defined $project) {
1818                $title .= " - " . decode_utf8($project);
1819                if (defined $action) {
1820                        $title .= "/$action";
1821                        if (defined $file_name) {
1822                                $title .= " - " . esc_path($file_name);
1823                                if ($action eq "tree" && $file_name !~ m|/$|) {
1824                                        $title .= "/";
1825                                }
1826                        }
1827                }
1828        }
1829        my $content_type;
1830        # require explicit support from the UA if we are to send the page as
1831        # 'application/xhtml+xml', otherwise send it as plain old 'text/html'.
1832        # we have to do this because MSIE sometimes globs '*/*', pretending to
1833        # support xhtml+xml but choking when it gets what it asked for.
1834        if (defined $cgi->http('HTTP_ACCEPT') &&
1835            $cgi->http('HTTP_ACCEPT') =~ m/(,|;|\s|^)application\/xhtml\+xml(,|;|\s|$)/ &&
1836            $cgi->Accept('application/xhtml+xml') != 0) {
1837                $content_type = 'application/xhtml+xml';
1838        } else {
1839                $content_type = 'text/html';
1840        }
1841        print $cgi->header(-type=>$content_type, -charset => 'utf-8',
1842                           -status=> $status, -expires => $expires);
1843        my $mod_perl_version = $ENV{'MOD_PERL'} ? " $ENV{'MOD_PERL'}" : '';
1844        print <<EOF;
1845<?xml version="1.0" encoding="utf-8"?>
1846<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
1847<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en-US" lang="en-US">
1848<!-- git web interface version $version, (C) 2005-2006, Kay Sievers <kay.sievers\@vrfy.org>, Christian Gierke -->
1849<!-- git core binaries version $git_version -->
1850<head>
1851<meta http-equiv="content-type" content="$content_type; charset=utf-8"/>
1852<meta name="generator" content="gitweb/$version git/$git_version$mod_perl_version"/>
1853<meta name="robots" content="index, nofollow"/>
1854<title>$title</title>
1855EOF
1856# print out each stylesheet that exist
1857        if (defined $stylesheet) {
1858#provides backwards capability for those people who define style sheet in a config file
1859                print '<link rel="stylesheet" type="text/css" href="'.$stylesheet.'"/>'."\n";
1860        } else {
1861                foreach my $stylesheet (@stylesheets) {
1862                        next unless $stylesheet;
1863                        print '<link rel="stylesheet" type="text/css" href="'.$stylesheet.'"/>'."\n";
1864                }
1865        }
1866        if (defined $project) {
1867                printf('<link rel="alternate" title="%s log RSS feed" '.
1868                       'href="%s" type="application/rss+xml" />'."\n",
1869                       esc_param($project), href(action=>"rss"));
1870                printf('<link rel="alternate" title="%s log Atom feed" '.
1871                       'href="%s" type="application/atom+xml" />'."\n",
1872                       esc_param($project), href(action=>"atom"));
1873        } else {
1874                printf('<link rel="alternate" title="%s projects list" '.
1875                       'href="%s" type="text/plain; charset=utf-8"/>'."\n",
1876                       $site_name, href(project=>undef, action=>"project_index"));
1877                printf('<link rel="alternate" title="%s projects feeds" '.
1878                       'href="%s" type="text/x-opml"/>'."\n",
1879                       $site_name, href(project=>undef, action=>"opml"));
1880        }
1881        if (defined $favicon) {
1882                print qq(<link rel="shortcut icon" href="$favicon" type="image/png"/>\n);
1883        }
1884
1885        print "</head>\n" .
1886              "<body>\n";
1887
1888        if (-f $site_header) {
1889                open (my $fd, $site_header);
1890                print <$fd>;
1891                close $fd;
1892        }
1893
1894        print "<div class=\"page_header\">\n" .
1895              $cgi->a({-href => esc_url($logo_url),
1896                       -title => $logo_label},
1897                      qq(<img src="$logo" width="72" height="27" alt="git" class="logo"/>));
1898        print $cgi->a({-href => esc_url($home_link)}, $home_link_str) . " / ";
1899        if (defined $project) {
1900                print $cgi->a({-href => href(action=>"summary")}, esc_html($project));
1901                if (defined $action) {
1902                        print " / $action";
1903                }
1904                print "\n";
1905        }
1906        print "</div>\n";
1907
1908        my ($have_search) = gitweb_check_feature('search');
1909        if ((defined $project) && ($have_search)) {
1910                if (!defined $searchtext) {
1911                        $searchtext = "";
1912                }
1913                my $search_hash;
1914                if (defined $hash_base) {
1915                        $search_hash = $hash_base;
1916                } elsif (defined $hash) {
1917                        $search_hash = $hash;
1918                } else {
1919                        $search_hash = "HEAD";
1920                }
1921                $cgi->param("a", "search");
1922                $cgi->param("h", $search_hash);
1923                $cgi->param("p", $project);
1924                print $cgi->startform(-method => "get", -action => $my_uri) .
1925                      "<div class=\"search\">\n" .
1926                      $cgi->hidden(-name => "p") . "\n" .
1927                      $cgi->hidden(-name => "a") . "\n" .
1928                      $cgi->hidden(-name => "h") . "\n" .
1929                      $cgi->popup_menu(-name => 'st', -default => 'commit',
1930                                       -values => ['commit', 'author', 'committer', 'pickaxe']) .
1931                      $cgi->sup($cgi->a({-href => href(action=>"search_help")}, "?")) .
1932                      " search:\n",
1933                      $cgi->textfield(-name => "s", -value => $searchtext) . "\n" .
1934                      "</div>" .
1935                      $cgi->end_form() . "\n";
1936        }
1937}
1938
1939sub git_footer_html {
1940        print "<div class=\"page_footer\">\n";
1941        if (defined $project) {
1942                my $descr = git_get_project_description($project);
1943                if (defined $descr) {
1944                        print "<div class=\"page_footer_text\">" . esc_html($descr) . "</div>\n";
1945                }
1946                print $cgi->a({-href => href(action=>"rss"),
1947                              -class => "rss_logo"}, "RSS") . " ";
1948                print $cgi->a({-href => href(action=>"atom"),
1949                              -class => "rss_logo"}, "Atom") . "\n";
1950        } else {
1951                print $cgi->a({-href => href(project=>undef, action=>"opml"),
1952                              -class => "rss_logo"}, "OPML") . " ";
1953                print $cgi->a({-href => href(project=>undef, action=>"project_index"),
1954                              -class => "rss_logo"}, "TXT") . "\n";
1955        }
1956        print "</div>\n" ;
1957
1958        if (-f $site_footer) {
1959                open (my $fd, $site_footer);
1960                print <$fd>;
1961                close $fd;
1962        }
1963
1964        print "</body>\n" .
1965              "</html>";
1966}
1967
1968sub die_error {
1969        my $status = shift || "403 Forbidden";
1970        my $error = shift || "Malformed query, file missing or permission denied";
1971
1972        git_header_html($status);
1973        print <<EOF;
1974<div class="page_body">
1975<br /><br />
1976$status - $error
1977<br />
1978</div>
1979EOF
1980        git_footer_html();
1981        exit;
1982}
1983
1984## ----------------------------------------------------------------------
1985## functions printing or outputting HTML: navigation
1986
1987sub git_print_page_nav {
1988        my ($current, $suppress, $head, $treehead, $treebase, $extra) = @_;
1989        $extra = '' if !defined $extra; # pager or formats
1990
1991        my @navs = qw(summary shortlog log commit commitdiff tree);
1992        if ($suppress) {
1993                @navs = grep { $_ ne $suppress } @navs;
1994        }
1995
1996        my %arg = map { $_ => {action=>$_} } @navs;
1997        if (defined $head) {
1998                for (qw(commit commitdiff)) {
1999                        $arg{$_}{'hash'} = $head;
2000                }
2001                if ($current =~ m/^(tree | log | shortlog | commit | commitdiff | search)$/x) {
2002                        for (qw(shortlog log)) {
2003                                $arg{$_}{'hash'} = $head;
2004                        }
2005                }
2006        }
2007        $arg{'tree'}{'hash'} = $treehead if defined $treehead;
2008        $arg{'tree'}{'hash_base'} = $treebase if defined $treebase;
2009
2010        print "<div class=\"page_nav\">\n" .
2011                (join " | ",
2012                 map { $_ eq $current ?
2013                       $_ : $cgi->a({-href => href(%{$arg{$_}})}, "$_")
2014                 } @navs);
2015        print "<br/>\n$extra<br/>\n" .
2016              "</div>\n";
2017}
2018
2019sub format_paging_nav {
2020        my ($action, $hash, $head, $page, $nrevs) = @_;
2021        my $paging_nav;
2022
2023
2024        if ($hash ne $head || $page) {
2025                $paging_nav .= $cgi->a({-href => href(action=>$action)}, "HEAD");
2026        } else {
2027                $paging_nav .= "HEAD";
2028        }
2029
2030        if ($page > 0) {
2031                $paging_nav .= " &sdot; " .
2032                        $cgi->a({-href => href(action=>$action, hash=>$hash, page=>$page-1),
2033                                 -accesskey => "p", -title => "Alt-p"}, "prev");
2034        } else {
2035                $paging_nav .= " &sdot; prev";
2036        }
2037
2038        if ($nrevs >= (100 * ($page+1)-1)) {
2039                $paging_nav .= " &sdot; " .
2040                        $cgi->a({-href => href(action=>$action, hash=>$hash, page=>$page+1),
2041                                 -accesskey => "n", -title => "Alt-n"}, "next");
2042        } else {
2043                $paging_nav .= " &sdot; next";
2044        }
2045
2046        return $paging_nav;
2047}
2048
2049## ......................................................................
2050## functions printing or outputting HTML: div
2051
2052sub git_print_header_div {
2053        my ($action, $title, $hash, $hash_base) = @_;
2054        my %args = ();
2055
2056        $args{'action'} = $action;
2057        $args{'hash'} = $hash if $hash;
2058        $args{'hash_base'} = $hash_base if $hash_base;
2059
2060        print "<div class=\"header\">\n" .
2061              $cgi->a({-href => href(%args), -class => "title"},
2062              $title ? $title : $action) .
2063              "\n</div>\n";
2064}
2065
2066#sub git_print_authorship (\%) {
2067sub git_print_authorship {
2068        my $co = shift;
2069
2070        my %ad = parse_date($co->{'author_epoch'}, $co->{'author_tz'});
2071        print "<div class=\"author_date\">" .
2072              esc_html($co->{'author_name'}) .
2073              " [$ad{'rfc2822'}";
2074        if ($ad{'hour_local'} < 6) {
2075                printf(" (<span class=\"atnight\">%02d:%02d</span> %s)",
2076                       $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
2077        } else {
2078                printf(" (%02d:%02d %s)",
2079                       $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
2080        }
2081        print "]</div>\n";
2082}
2083
2084sub git_print_page_path {
2085        my $name = shift;
2086        my $type = shift;
2087        my $hb = shift;
2088
2089
2090        print "<div class=\"page_path\">";
2091        print $cgi->a({-href => href(action=>"tree", hash_base=>$hb),
2092                      -title => 'tree root'}, decode_utf8("[$project]"));
2093        print " / ";
2094        if (defined $name) {
2095                my @dirname = split '/', $name;
2096                my $basename = pop @dirname;
2097                my $fullname = '';
2098
2099                foreach my $dir (@dirname) {
2100                        $fullname .= ($fullname ? '/' : '') . $dir;
2101                        print $cgi->a({-href => href(action=>"tree", file_name=>$fullname,
2102                                                     hash_base=>$hb),
2103                                      -title => $fullname}, esc_path($dir));
2104                        print " / ";
2105                }
2106                if (defined $type && $type eq 'blob') {
2107                        print $cgi->a({-href => href(action=>"blob_plain", file_name=>$file_name,
2108                                                     hash_base=>$hb),
2109                                      -title => $name}, esc_path($basename));
2110                } elsif (defined $type && $type eq 'tree') {
2111                        print $cgi->a({-href => href(action=>"tree", file_name=>$file_name,
2112                                                     hash_base=>$hb),
2113                                      -title => $name}, esc_path($basename));
2114                        print " / ";
2115                } else {
2116                        print esc_path($basename);
2117                }
2118        }
2119        print "<br/></div>\n";
2120}
2121
2122# sub git_print_log (\@;%) {
2123sub git_print_log ($;%) {
2124        my $log = shift;
2125        my %opts = @_;
2126
2127        if ($opts{'-remove_title'}) {
2128                # remove title, i.e. first line of log
2129                shift @$log;
2130        }
2131        # remove leading empty lines
2132        while (defined $log->[0] && $log->[0] eq "") {
2133                shift @$log;
2134        }
2135
2136        # print log
2137        my $signoff = 0;
2138        my $empty = 0;
2139        foreach my $line (@$log) {
2140                if ($line =~ m/^ *(signed[ \-]off[ \-]by[ :]|acked[ \-]by[ :]|cc[ :])/i) {
2141                        $signoff = 1;
2142                        $empty = 0;
2143                        if (! $opts{'-remove_signoff'}) {
2144                                print "<span class=\"signoff\">" . esc_html($line) . "</span><br/>\n";
2145                                next;
2146                        } else {
2147                                # remove signoff lines
2148                                next;
2149                        }
2150                } else {
2151                        $signoff = 0;
2152                }
2153
2154                # print only one empty line
2155                # do not print empty line after signoff
2156                if ($line eq "") {
2157                        next if ($empty || $signoff);
2158                        $empty = 1;
2159                } else {
2160                        $empty = 0;
2161                }
2162
2163                print format_log_line_html($line) . "<br/>\n";
2164        }
2165
2166        if ($opts{'-final_empty_line'}) {
2167                # end with single empty line
2168                print "<br/>\n" unless $empty;
2169        }
2170}
2171
2172# return link target (what link points to)
2173sub git_get_link_target {
2174        my $hash = shift;
2175        my $link_target;
2176
2177        # read link
2178        open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
2179                or return;
2180        {
2181                local $/;
2182                $link_target = <$fd>;
2183        }
2184        close $fd
2185                or return;
2186
2187        return $link_target;
2188}
2189
2190# given link target, and the directory (basedir) the link is in,
2191# return target of link relative to top directory (top tree);
2192# return undef if it is not possible (including absolute links).
2193sub normalize_link_target {
2194        my ($link_target, $basedir, $hash_base) = @_;
2195
2196        # we can normalize symlink target only if $hash_base is provided
2197        return unless $hash_base;
2198
2199        # absolute symlinks (beginning with '/') cannot be normalized
2200        return if (substr($link_target, 0, 1) eq '/');
2201
2202        # normalize link target to path from top (root) tree (dir)
2203        my $path;
2204        if ($basedir) {
2205                $path = $basedir . '/' . $link_target;
2206        } else {
2207                # we are in top (root) tree (dir)
2208                $path = $link_target;
2209        }
2210
2211        # remove //, /./, and /../
2212        my @path_parts;
2213        foreach my $part (split('/', $path)) {
2214                # discard '.' and ''
2215                next if (!$part || $part eq '.');
2216                # handle '..'
2217                if ($part eq '..') {
2218                        if (@path_parts) {
2219                                pop @path_parts;
2220                        } else {
2221                                # link leads outside repository (outside top dir)
2222                                return;
2223                        }
2224                } else {
2225                        push @path_parts, $part;
2226                }
2227        }
2228        $path = join('/', @path_parts);
2229
2230        return $path;
2231}
2232
2233# print tree entry (row of git_tree), but without encompassing <tr> element
2234sub git_print_tree_entry {
2235        my ($t, $basedir, $hash_base, $have_blame) = @_;
2236
2237        my %base_key = ();
2238        $base_key{'hash_base'} = $hash_base if defined $hash_base;
2239
2240        # The format of a table row is: mode list link.  Where mode is
2241        # the mode of the entry, list is the name of the entry, an href,
2242        # and link is the action links of the entry.
2243
2244        print "<td class=\"mode\">" . mode_str($t->{'mode'}) . "</td>\n";
2245        if ($t->{'type'} eq "blob") {
2246                print "<td class=\"list\">" .
2247                        $cgi->a({-href => href(action=>"blob", hash=>$t->{'hash'},
2248                                               file_name=>"$basedir$t->{'name'}", %base_key),
2249                                -class => "list"}, esc_path($t->{'name'}));
2250                if (S_ISLNK(oct $t->{'mode'})) {
2251                        my $link_target = git_get_link_target($t->{'hash'});
2252                        if ($link_target) {
2253                                my $norm_target = normalize_link_target($link_target, $basedir, $hash_base);
2254                                if (defined $norm_target) {
2255                                        print " -> " .
2256                                              $cgi->a({-href => href(action=>"object", hash_base=>$hash_base,
2257                                                                     file_name=>$norm_target),
2258                                                       -title => $norm_target}, esc_path($link_target));
2259                                } else {
2260                                        print " -> " . esc_path($link_target);
2261                                }
2262                        }
2263                }
2264                print "</td>\n";
2265                print "<td class=\"link\">";
2266                print $cgi->a({-href => href(action=>"blob", hash=>$t->{'hash'},
2267                                             file_name=>"$basedir$t->{'name'}", %base_key)},
2268                              "blob");
2269                if ($have_blame) {
2270                        print " | " .
2271                              $cgi->a({-href => href(action=>"blame", hash=>$t->{'hash'},
2272                                                     file_name=>"$basedir$t->{'name'}", %base_key)},
2273                                      "blame");
2274                }
2275                if (defined $hash_base) {
2276                        print " | " .
2277                              $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
2278                                                     hash=>$t->{'hash'}, file_name=>"$basedir$t->{'name'}")},
2279                                      "history");
2280                }
2281                print " | " .
2282                        $cgi->a({-href => href(action=>"blob_plain", hash_base=>$hash_base,
2283                                               file_name=>"$basedir$t->{'name'}")},
2284                                "raw");
2285                print "</td>\n";
2286
2287        } elsif ($t->{'type'} eq "tree") {
2288                print "<td class=\"list\">";
2289                print $cgi->a({-href => href(action=>"tree", hash=>$t->{'hash'},
2290                                             file_name=>"$basedir$t->{'name'}", %base_key)},
2291                              esc_path($t->{'name'}));
2292                print "</td>\n";
2293                print "<td class=\"link\">";
2294                print $cgi->a({-href => href(action=>"tree", hash=>$t->{'hash'},
2295                                             file_name=>"$basedir$t->{'name'}", %base_key)},
2296                              "tree");
2297                if (defined $hash_base) {
2298                        print " | " .
2299                              $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
2300                                                     file_name=>"$basedir$t->{'name'}")},
2301                                      "history");
2302                }
2303                print "</td>\n";
2304        }
2305}
2306
2307## ......................................................................
2308## functions printing large fragments of HTML
2309
2310sub fill_from_file_info {
2311        my ($diff, @parents) = @_;
2312
2313        $diff->{'from_file'} = [ ];
2314        $diff->{'from_file'}[$diff->{'nparents'} - 1] = undef;
2315        for (my $i = 0; $i < $diff->{'nparents'}; $i++) {
2316                if ($diff->{'status'}[$i] eq 'R' ||
2317                    $diff->{'status'}[$i] eq 'C') {
2318                        $diff->{'from_file'}[$i] =
2319                                git_get_path_by_hash($parents[$i], $diff->{'from_id'}[$i]);
2320                }
2321        }
2322
2323        return $diff;
2324}
2325
2326# parameters can be strings, or references to arrays of strings
2327sub from_ids_eq {
2328        my ($a, $b) = @_;
2329
2330        if (ref($a) eq "ARRAY" && ref($b) eq "ARRAY" && @$a == @$b) {
2331                for (my $i = 0; $i < @$a; ++$i) {
2332                        return 0 unless ($a->[$i] eq $b->[$i]);
2333                }
2334                return 1;
2335        } elsif (!ref($a) && !ref($b)) {
2336                return $a eq $b;
2337        } else {
2338                return 0;
2339        }
2340}
2341
2342
2343sub git_difftree_body {
2344        my ($difftree, $hash, @parents) = @_;
2345        my ($parent) = $parents[0];
2346        my ($have_blame) = gitweb_check_feature('blame');
2347        print "<div class=\"list_head\">\n";
2348        if ($#{$difftree} > 10) {
2349                print(($#{$difftree} + 1) . " files changed:\n");
2350        }
2351        print "</div>\n";
2352
2353        print "<table class=\"" .
2354              (@parents > 1 ? "combined " : "") .
2355              "diff_tree\">\n";
2356        my $alternate = 1;
2357        my $patchno = 0;
2358        foreach my $line (@{$difftree}) {
2359                my $diff;
2360                if (ref($line) eq "HASH") {
2361                        # pre-parsed (or generated by hand)
2362                        $diff = $line;
2363                } else {
2364                        $diff = parse_difftree_raw_line($line);
2365                }
2366
2367                if ($alternate) {
2368                        print "<tr class=\"dark\">\n";
2369                } else {
2370                        print "<tr class=\"light\">\n";
2371                }
2372                $alternate ^= 1;
2373
2374                if (exists $diff->{'nparents'}) { # combined diff
2375
2376                        fill_from_file_info($diff, @parents)
2377                                unless exists $diff->{'from_file'};
2378
2379                        if ($diff->{'to_id'} ne ('0' x 40)) {
2380                                # file exists in the result (child) commit
2381                                print "<td>" .
2382                                      $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
2383                                                             file_name=>$diff->{'to_file'},
2384                                                             hash_base=>$hash),
2385                                              -class => "list"}, esc_path($diff->{'to_file'})) .
2386                                      "</td>\n";
2387                        } else {
2388                                print "<td>" .
2389                                      esc_path($diff->{'to_file'}) .
2390                                      "</td>\n";
2391                        }
2392
2393                        if ($action eq 'commitdiff') {
2394                                # link to patch
2395                                $patchno++;
2396                                print "<td class=\"link\">" .
2397                                      $cgi->a({-href => "#patch$patchno"}, "patch") .
2398                                      " | " .
2399                                      "</td>\n";
2400                        }
2401
2402                        my $has_history = 0;
2403                        my $not_deleted = 0;
2404                        for (my $i = 0; $i < $diff->{'nparents'}; $i++) {
2405                                my $hash_parent = $parents[$i];
2406                                my $from_hash = $diff->{'from_id'}[$i];
2407                                my $from_path = $diff->{'from_file'}[$i];
2408                                my $status = $diff->{'status'}[$i];
2409
2410                                $has_history ||= ($status ne 'A');
2411                                $not_deleted ||= ($status ne 'D');
2412
2413                                if ($status eq 'A') {
2414                                        print "<td  class=\"link\" align=\"right\"> | </td>\n";
2415                                } elsif ($status eq 'D') {
2416                                        print "<td class=\"link\">" .
2417                                              $cgi->a({-href => href(action=>"blob",
2418                                                                     hash_base=>$hash,
2419                                                                     hash=>$from_hash,
2420                                                                     file_name=>$from_path)},
2421                                                      "blob" . ($i+1)) .
2422                                              " | </td>\n";
2423                                } else {
2424                                        if ($diff->{'to_id'} eq $from_hash) {
2425                                                print "<td class=\"link nochange\">";
2426                                        } else {
2427                                                print "<td class=\"link\">";
2428                                        }
2429                                        print $cgi->a({-href => href(action=>"blobdiff",
2430                                                                     hash=>$diff->{'to_id'},
2431                                                                     hash_parent=>$from_hash,
2432                                                                     hash_base=>$hash,
2433                                                                     hash_parent_base=>$hash_parent,
2434                                                                     file_name=>$diff->{'to_file'},
2435                                                                     file_parent=>$from_path)},
2436                                                      "diff" . ($i+1)) .
2437                                              " | </td>\n";
2438                                }
2439                        }
2440
2441                        print "<td class=\"link\">";
2442                        if ($not_deleted) {
2443                                print $cgi->a({-href => href(action=>"blob",
2444                                                             hash=>$diff->{'to_id'},
2445                                                             file_name=>$diff->{'to_file'},
2446                                                             hash_base=>$hash)},
2447                                              "blob");
2448                                print " | " if ($has_history);
2449                        }
2450                        if ($has_history) {
2451                                print $cgi->a({-href => href(action=>"history",
2452                                                             file_name=>$diff->{'to_file'},
2453                                                             hash_base=>$hash)},
2454                                              "history");
2455                        }
2456                        print "</td>\n";
2457
2458                        print "</tr>\n";
2459                        next; # instead of 'else' clause, to avoid extra indent
2460                }
2461                # else ordinary diff
2462
2463                my ($to_mode_oct, $to_mode_str, $to_file_type);
2464                my ($from_mode_oct, $from_mode_str, $from_file_type);
2465                if ($diff->{'to_mode'} ne ('0' x 6)) {
2466                        $to_mode_oct = oct $diff->{'to_mode'};
2467                        if (S_ISREG($to_mode_oct)) { # only for regular file
2468                                $to_mode_str = sprintf("%04o", $to_mode_oct & 0777); # permission bits
2469                        }
2470                        $to_file_type = file_type($diff->{'to_mode'});
2471                }
2472                if ($diff->{'from_mode'} ne ('0' x 6)) {
2473                        $from_mode_oct = oct $diff->{'from_mode'};
2474                        if (S_ISREG($to_mode_oct)) { # only for regular file
2475                                $from_mode_str = sprintf("%04o", $from_mode_oct & 0777); # permission bits
2476                        }
2477                        $from_file_type = file_type($diff->{'from_mode'});
2478                }
2479
2480                if ($diff->{'status'} eq "A") { # created
2481                        my $mode_chng = "<span class=\"file_status new\">[new $to_file_type";
2482                        $mode_chng   .= " with mode: $to_mode_str" if $to_mode_str;
2483                        $mode_chng   .= "]</span>";
2484                        print "<td>";
2485                        print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
2486                                                     hash_base=>$hash, file_name=>$diff->{'file'}),
2487                                      -class => "list"}, esc_path($diff->{'file'}));
2488                        print "</td>\n";
2489                        print "<td>$mode_chng</td>\n";
2490                        print "<td class=\"link\">";
2491                        if ($action eq 'commitdiff') {
2492                                # link to patch
2493                                $patchno++;
2494                                print $cgi->a({-href => "#patch$patchno"}, "patch");
2495                                print " | ";
2496                        }
2497                        print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
2498                                                     hash_base=>$hash, file_name=>$diff->{'file'})},
2499                                      "blob");
2500                        print "</td>\n";
2501
2502                } elsif ($diff->{'status'} eq "D") { # deleted
2503                        my $mode_chng = "<span class=\"file_status deleted\">[deleted $from_file_type]</span>";
2504                        print "<td>";
2505                        print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'from_id'},
2506                                                     hash_base=>$parent, file_name=>$diff->{'file'}),
2507                                       -class => "list"}, esc_path($diff->{'file'}));
2508                        print "</td>\n";
2509                        print "<td>$mode_chng</td>\n";
2510                        print "<td class=\"link\">";
2511                        if ($action eq 'commitdiff') {
2512                                # link to patch
2513                                $patchno++;
2514                                print $cgi->a({-href => "#patch$patchno"}, "patch");
2515                                print " | ";
2516                        }
2517                        print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'from_id'},
2518                                                     hash_base=>$parent, file_name=>$diff->{'file'})},
2519                                      "blob") . " | ";
2520                        if ($have_blame) {
2521                                print $cgi->a({-href => href(action=>"blame", hash_base=>$parent,
2522                                                             file_name=>$diff->{'file'})},
2523                                              "blame") . " | ";
2524                        }
2525                        print $cgi->a({-href => href(action=>"history", hash_base=>$parent,
2526                                                     file_name=>$diff->{'file'})},
2527                                      "history");
2528                        print "</td>\n";
2529
2530                } elsif ($diff->{'status'} eq "M" || $diff->{'status'} eq "T") { # modified, or type changed
2531                        my $mode_chnge = "";
2532                        if ($diff->{'from_mode'} != $diff->{'to_mode'}) {
2533                                $mode_chnge = "<span class=\"file_status mode_chnge\">[changed";
2534                                if ($from_file_type ne $to_file_type) {
2535                                        $mode_chnge .= " from $from_file_type to $to_file_type";
2536                                }
2537                                if (($from_mode_oct & 0777) != ($to_mode_oct & 0777)) {
2538                                        if ($from_mode_str && $to_mode_str) {
2539                                                $mode_chnge .= " mode: $from_mode_str->$to_mode_str";
2540                                        } elsif ($to_mode_str) {
2541                                                $mode_chnge .= " mode: $to_mode_str";
2542                                        }
2543                                }
2544                                $mode_chnge .= "]</span>\n";
2545                        }
2546                        print "<td>";
2547                        print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
2548                                                     hash_base=>$hash, file_name=>$diff->{'file'}),
2549                                      -class => "list"}, esc_path($diff->{'file'}));
2550                        print "</td>\n";
2551                        print "<td>$mode_chnge</td>\n";
2552                        print "<td class=\"link\">";
2553                        if ($action eq 'commitdiff') {
2554                                # link to patch
2555                                $patchno++;
2556                                print $cgi->a({-href => "#patch$patchno"}, "patch") .
2557                                      " | ";
2558                        } elsif ($diff->{'to_id'} ne $diff->{'from_id'}) {
2559                                # "commit" view and modified file (not onlu mode changed)
2560                                print $cgi->a({-href => href(action=>"blobdiff",
2561                                                             hash=>$diff->{'to_id'}, hash_parent=>$diff->{'from_id'},
2562                                                             hash_base=>$hash, hash_parent_base=>$parent,
2563                                                             file_name=>$diff->{'file'})},
2564                                              "diff") .
2565                                      " | ";
2566                        }
2567                        print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
2568                                                     hash_base=>$hash, file_name=>$diff->{'file'})},
2569                                       "blob") . " | ";
2570                        if ($have_blame) {
2571                                print $cgi->a({-href => href(action=>"blame", hash_base=>$hash,
2572                                                             file_name=>$diff->{'file'})},
2573                                              "blame") . " | ";
2574                        }
2575                        print $cgi->a({-href => href(action=>"history", hash_base=>$hash,
2576                                                     file_name=>$diff->{'file'})},
2577                                      "history");
2578                        print "</td>\n";
2579
2580                } elsif ($diff->{'status'} eq "R" || $diff->{'status'} eq "C") { # renamed or copied
2581                        my %status_name = ('R' => 'moved', 'C' => 'copied');
2582                        my $nstatus = $status_name{$diff->{'status'}};
2583                        my $mode_chng = "";
2584                        if ($diff->{'from_mode'} != $diff->{'to_mode'}) {
2585                                # mode also for directories, so we cannot use $to_mode_str
2586                                $mode_chng = sprintf(", mode: %04o", $to_mode_oct & 0777);
2587                        }
2588                        print "<td>" .
2589                              $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
2590                                                     hash=>$diff->{'to_id'}, file_name=>$diff->{'to_file'}),
2591                                      -class => "list"}, esc_path($diff->{'to_file'})) . "</td>\n" .
2592                              "<td><span class=\"file_status $nstatus\">[$nstatus from " .
2593                              $cgi->a({-href => href(action=>"blob", hash_base=>$parent,
2594                                                     hash=>$diff->{'from_id'}, file_name=>$diff->{'from_file'}),
2595                                      -class => "list"}, esc_path($diff->{'from_file'})) .
2596                              " with " . (int $diff->{'similarity'}) . "% similarity$mode_chng]</span></td>\n" .
2597                              "<td class=\"link\">";
2598                        if ($action eq 'commitdiff') {
2599                                # link to patch
2600                                $patchno++;
2601                                print $cgi->a({-href => "#patch$patchno"}, "patch") .
2602                                      " | ";
2603                        } elsif ($diff->{'to_id'} ne $diff->{'from_id'}) {
2604                                # "commit" view and modified file (not only pure rename or copy)
2605                                print $cgi->a({-href => href(action=>"blobdiff",
2606                                                             hash=>$diff->{'to_id'}, hash_parent=>$diff->{'from_id'},
2607                                                             hash_base=>$hash, hash_parent_base=>$parent,
2608                                                             file_name=>$diff->{'to_file'}, file_parent=>$diff->{'from_file'})},
2609                                              "diff") .
2610                                      " | ";
2611                        }
2612                        print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
2613                                                     hash_base=>$parent, file_name=>$diff->{'to_file'})},
2614                                      "blob") . " | ";
2615                        if ($have_blame) {
2616                                print $cgi->a({-href => href(action=>"blame", hash_base=>$hash,
2617                                                             file_name=>$diff->{'to_file'})},
2618                                              "blame") . " | ";
2619                        }
2620                        print $cgi->a({-href => href(action=>"history", hash_base=>$hash,
2621                                                    file_name=>$diff->{'to_file'})},
2622                                      "history");
2623                        print "</td>\n";
2624
2625                } # we should not encounter Unmerged (U) or Unknown (X) status
2626                print "</tr>\n";
2627        }
2628        print "</table>\n";
2629}
2630
2631sub git_patchset_body {
2632        my ($fd, $difftree, $hash, @hash_parents) = @_;
2633        my ($hash_parent) = $hash_parents[0];
2634
2635        my $patch_idx = 0;
2636        my $patch_number = 0;
2637        my $patch_line;
2638        my $diffinfo;
2639        my (%from, %to);
2640
2641        print "<div class=\"patchset\">\n";
2642
2643        # skip to first patch
2644        while ($patch_line = <$fd>) {
2645                chomp $patch_line;
2646
2647                last if ($patch_line =~ m/^diff /);
2648        }
2649
2650 PATCH:
2651        while ($patch_line) {
2652                my @diff_header;
2653                my ($from_id, $to_id);
2654
2655                # git diff header
2656                #assert($patch_line =~ m/^diff /) if DEBUG;
2657                #assert($patch_line !~ m!$/$!) if DEBUG; # is chomp-ed
2658                $patch_number++;
2659                push @diff_header, $patch_line;
2660
2661                # extended diff header
2662        EXTENDED_HEADER:
2663                while ($patch_line = <$fd>) {
2664                        chomp $patch_line;
2665
2666                        last EXTENDED_HEADER if ($patch_line =~ m/^--- |^diff /);
2667
2668                        if ($patch_line =~ m/^index ([0-9a-fA-F]{40})..([0-9a-fA-F]{40})/) {
2669                                $from_id = $1;
2670                                $to_id   = $2;
2671                        } elsif ($patch_line =~ m/^index ((?:[0-9a-fA-F]{40},)+[0-9a-fA-F]{40})..([0-9a-fA-F]{40})/) {
2672                                $from_id = [ split(',', $1) ];
2673                                $to_id   = $2;
2674                        }
2675
2676                        push @diff_header, $patch_line;
2677                }
2678                my $last_patch_line = $patch_line;
2679
2680                # check if current patch belong to current raw line
2681                # and parse raw git-diff line if needed
2682                if (defined $diffinfo &&
2683                    defined $from_id && defined $to_id &&
2684                    from_ids_eq($diffinfo->{'from_id'}, $from_id) &&
2685                    $diffinfo->{'to_id'} eq $to_id) {
2686                        # this is continuation of a split patch
2687                        print "<div class=\"patch cont\">\n";
2688                } else {
2689                        # advance raw git-diff output if needed
2690                        $patch_idx++ if defined $diffinfo;
2691
2692                        # read and prepare patch information
2693                        if (ref($difftree->[$patch_idx]) eq "HASH") {
2694                                # pre-parsed (or generated by hand)
2695                                $diffinfo = $difftree->[$patch_idx];
2696                        } else {
2697                                $diffinfo = parse_difftree_raw_line($difftree->[$patch_idx]);
2698                        }
2699                        if ($diffinfo->{'nparents'}) {
2700                                # combined diff
2701                                $from{'file'} = [];
2702                                $from{'href'} = [];
2703                                fill_from_file_info($diffinfo, @hash_parents)
2704                                        unless exists $diffinfo->{'from_file'};
2705                                for (my $i = 0; $i < $diffinfo->{'nparents'}; $i++) {
2706                                        $from{'file'}[$i] = $diffinfo->{'from_file'}[$i] || $diffinfo->{'to_file'};
2707                                        if ($diffinfo->{'status'}[$i] ne "A") { # not new (added) file
2708                                                $from{'href'}[$i] = href(action=>"blob",
2709                                                                         hash_base=>$hash_parents[$i],
2710                                                                         hash=>$diffinfo->{'from_id'}[$i],
2711                                                                         file_name=>$from{'file'}[$i]);
2712                                        } else {
2713                                                $from{'href'}[$i] = undef;
2714                                        }
2715                                }
2716                        } else {
2717                                $from{'file'} = $diffinfo->{'from_file'} || $diffinfo->{'file'};
2718                                if ($diffinfo->{'status'} ne "A") { # not new (added) file
2719                                        $from{'href'} = href(action=>"blob", hash_base=>$hash_parent,
2720                                                             hash=>$diffinfo->{'from_id'},
2721                                                             file_name=>$from{'file'});
2722                                } else {
2723                                        delete $from{'href'};
2724                                }
2725                        }
2726
2727                        $to{'file'} = $diffinfo->{'to_file'} || $diffinfo->{'file'};
2728                        if ($diffinfo->{'to_id'} ne ('0' x 40)) { # file exists in result
2729                                $to{'href'} = href(action=>"blob", hash_base=>$hash,
2730                                                   hash=>$diffinfo->{'to_id'},
2731                                                   file_name=>$to{'file'});
2732                        } else {
2733                                delete $to{'href'};
2734                        }
2735                        # this is first patch for raw difftree line with $patch_idx index
2736                        # we index @$difftree array from 0, but number patches from 1
2737                        print "<div class=\"patch\" id=\"patch". ($patch_idx+1) ."\">\n";
2738                }
2739
2740                # print "git diff" header
2741                $patch_line = shift @diff_header;
2742                if ($diffinfo->{'nparents'}) {
2743
2744                        # combined diff
2745                        $patch_line =~ s!^(diff (.*?) )"?.*$!$1!;
2746                        if ($to{'href'}) {
2747                                $patch_line .= $cgi->a({-href => $to{'href'}, -class => "path"},
2748                                                       esc_path($to{'file'}));
2749                        } else { # file was deleted
2750                                $patch_line .= esc_path($to{'file'});
2751                        }
2752
2753                } else {
2754
2755                        $patch_line =~ s!^(diff (.*?) )"?a/.*$!$1!;
2756                        if ($from{'href'}) {
2757                                $patch_line .= $cgi->a({-href => $from{'href'}, -class => "path"},
2758                                                       'a/' . esc_path($from{'file'}));
2759                        } else { # file was added
2760                                $patch_line .= 'a/' . esc_path($from{'file'});
2761                        }
2762                        $patch_line .= ' ';
2763                        if ($to{'href'}) {
2764                                $patch_line .= $cgi->a({-href => $to{'href'}, -class => "path"},
2765                                                       'b/' . esc_path($to{'file'}));
2766                        } else { # file was deleted
2767                                $patch_line .= 'b/' . esc_path($to{'file'});
2768                        }
2769
2770                }
2771                print "<div class=\"diff header\">$patch_line</div>\n";
2772
2773                # print extended diff header
2774                print "<div class=\"diff extended_header\">\n" if (@diff_header > 0);
2775        EXTENDED_HEADER:
2776                foreach $patch_line (@diff_header) {
2777                        # match <path>
2778                        if ($patch_line =~ s!^((copy|rename) from ).*$!$1! && $from{'href'}) {
2779                                $patch_line .= $cgi->a({-href=>$from{'href'}, -class=>"path"},
2780                                                       esc_path($from{'file'}));
2781                        }
2782                        if ($patch_line =~ s!^((copy|rename) to ).*$!$1! && $to{'href'}) {
2783                                $patch_line .= $cgi->a({-href=>$to{'href'}, -class=>"path"},
2784                                                       esc_path($to{'file'}));
2785                        }
2786                        # match single <mode>
2787                        if ($patch_line =~ m/\s(\d{6})$/) {
2788                                $patch_line .= '<span class="info"> (' .
2789                                               file_type_long($1) .
2790                                               ')</span>';
2791                        }
2792                        # match <hash>
2793                        if ($patch_line =~ m/^index [0-9a-fA-F]{40},[0-9a-fA-F]{40}/) {
2794                                # can match only for combined diff
2795                                $patch_line = 'index ';
2796                                for (my $i = 0; $i < $diffinfo->{'nparents'}; $i++) {
2797                                        if ($from{'href'}[$i]) {
2798                                                $patch_line .= $cgi->a({-href=>$from{'href'}[$i],
2799                                                                        -class=>"hash"},
2800                                                                       substr($diffinfo->{'from_id'}[$i],0,7));
2801                                        } else {
2802                                                $patch_line .= '0' x 7;
2803                                        }
2804                                        # separator
2805                                        $patch_line .= ',' if ($i < $diffinfo->{'nparents'} - 1);
2806                                }
2807                                $patch_line .= '..';
2808                                if ($to{'href'}) {
2809                                        $patch_line .= $cgi->a({-href=>$to{'href'}, -class=>"hash"},
2810                                                               substr($diffinfo->{'to_id'},0,7));
2811                                } else {
2812                                        $patch_line .= '0' x 7;
2813                                }
2814
2815                        } elsif ($patch_line =~ m/^index [0-9a-fA-F]{40}..[0-9a-fA-F]{40}/) {
2816                                # can match only for ordinary diff
2817                                my ($from_link, $to_link);
2818                                if ($from{'href'}) {
2819                                        $from_link = $cgi->a({-href=>$from{'href'}, -class=>"hash"},
2820                                                             substr($diffinfo->{'from_id'},0,7));
2821                                } else {
2822                                        $from_link = '0' x 7;
2823                                }
2824                                if ($to{'href'}) {
2825                                        $to_link = $cgi->a({-href=>$to{'href'}, -class=>"hash"},
2826                                                           substr($diffinfo->{'to_id'},0,7));
2827                                } else {
2828                                        $to_link = '0' x 7;
2829                                }
2830                                #affirm {
2831                                #       my ($from_hash, $to_hash) =
2832                                #               ($patch_line =~ m/^index ([0-9a-fA-F]{40})..([0-9a-fA-F]{40})/);
2833                                #       my ($from_id, $to_id) =
2834                                #               ($diffinfo->{'from_id'}, $diffinfo->{'to_id'});
2835                                #       ($from_hash eq $from_id) && ($to_hash eq $to_id);
2836                                #} if DEBUG;
2837                                my ($from_id, $to_id) = ($diffinfo->{'from_id'}, $diffinfo->{'to_id'});
2838                                $patch_line =~ s!$from_id\.\.$to_id!$from_link..$to_link!;
2839                        }
2840                        print $patch_line . "<br/>\n";
2841                }
2842                print "</div>\n"  if (@diff_header > 0); # class="diff extended_header"
2843
2844                # from-file/to-file diff header
2845                $patch_line = $last_patch_line;
2846                if (! $patch_line) {
2847                        print "</div>\n"; # class="patch"
2848                        last PATCH;
2849                }
2850                next PATCH if ($patch_line =~ m/^diff /);
2851                #assert($patch_line =~ m/^---/) if DEBUG;
2852                if (!$diffinfo->{'nparents'} && # not from-file line for combined diff
2853                    $from{'href'} && $patch_line =~ m!^--- "?a/!) {
2854                        $patch_line = '--- a/' .
2855                                      $cgi->a({-href=>$from{'href'}, -class=>"path"},
2856                                              esc_path($from{'file'}));
2857                }
2858                print "<div class=\"diff from_file\">$patch_line</div>\n";
2859
2860                $patch_line = <$fd>;
2861                chomp $patch_line;
2862
2863                #assert($patch_line =~ m/^+++/) if DEBUG;
2864                if ($to{'href'} && $patch_line =~ m!^\+\+\+ "?b/!) {
2865                        $patch_line = '+++ b/' .
2866                                      $cgi->a({-href=>$to{'href'}, -class=>"path"},
2867                                              esc_path($to{'file'}));
2868                }
2869                print "<div class=\"diff to_file\">$patch_line</div>\n";
2870
2871                # the patch itself
2872        LINE:
2873                while ($patch_line = <$fd>) {
2874                        chomp $patch_line;
2875
2876                        next PATCH if ($patch_line =~ m/^diff /);
2877
2878                        print format_diff_line($patch_line, \%from, \%to);
2879                }
2880
2881        } continue {
2882                print "</div>\n"; # class="patch"
2883        }
2884
2885        if ($patch_number == 0) {
2886                if (@hash_parents > 1) {
2887                        print "<div class=\"diff nodifferences\">Trivial merge</div>\n";
2888                } else {
2889                        print "<div class=\"diff nodifferences\">No differences found</div>\n";
2890                }
2891        }
2892
2893        print "</div>\n"; # class="patchset"
2894}
2895
2896# . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2897
2898sub git_project_list_body {
2899        my ($projlist, $order, $from, $to, $extra, $no_header) = @_;
2900
2901        my ($check_forks) = gitweb_check_feature('forks');
2902
2903        my @projects;
2904        foreach my $pr (@$projlist) {
2905                my (@aa) = git_get_last_activity($pr->{'path'});
2906                unless (@aa) {
2907                        next;
2908                }
2909                ($pr->{'age'}, $pr->{'age_string'}) = @aa;
2910                if (!defined $pr->{'descr'}) {
2911                        my $descr = git_get_project_description($pr->{'path'}) || "";
2912                        $pr->{'descr_long'} = decode_utf8($descr);
2913                        $pr->{'descr'} = chop_str($descr, 25, 5);
2914                }
2915                if (!defined $pr->{'owner'}) {
2916                        $pr->{'owner'} = get_file_owner("$projectroot/$pr->{'path'}") || "";
2917                }
2918                if ($check_forks) {
2919                        my $pname = $pr->{'path'};
2920                        if (($pname =~ s/\.git$//) &&
2921                            ($pname !~ /\/$/) &&
2922                            (-d "$projectroot/$pname")) {
2923                                $pr->{'forks'} = "-d $projectroot/$pname";
2924                        }
2925                        else {
2926                                $pr->{'forks'} = 0;
2927                        }
2928                }
2929                push @projects, $pr;
2930        }
2931
2932        $order ||= $default_projects_order;
2933        $from = 0 unless defined $from;
2934        $to = $#projects if (!defined $to || $#projects < $to);
2935
2936        print "<table class=\"project_list\">\n";
2937        unless ($no_header) {
2938                print "<tr>\n";
2939                if ($check_forks) {
2940                        print "<th></th>\n";
2941                }
2942                if ($order eq "project") {
2943                        @projects = sort {$a->{'path'} cmp $b->{'path'}} @projects;
2944                        print "<th>Project</th>\n";
2945                } else {
2946                        print "<th>" .
2947                              $cgi->a({-href => href(project=>undef, order=>'project'),
2948                                       -class => "header"}, "Project") .
2949                              "</th>\n";
2950                }
2951                if ($order eq "descr") {
2952                        @projects = sort {$a->{'descr'} cmp $b->{'descr'}} @projects;
2953                        print "<th>Description</th>\n";
2954                } else {
2955                        print "<th>" .
2956                              $cgi->a({-href => href(project=>undef, order=>'descr'),
2957                                       -class => "header"}, "Description") .
2958                              "</th>\n";
2959                }
2960                if ($order eq "owner") {
2961                        @projects = sort {$a->{'owner'} cmp $b->{'owner'}} @projects;
2962                        print "<th>Owner</th>\n";
2963                } else {
2964                        print "<th>" .
2965                              $cgi->a({-href => href(project=>undef, order=>'owner'),
2966                                       -class => "header"}, "Owner") .
2967                              "</th>\n";
2968                }
2969                if ($order eq "age") {
2970                        @projects = sort {$a->{'age'} <=> $b->{'age'}} @projects;
2971                        print "<th>Last Change</th>\n";
2972                } else {
2973                        print "<th>" .
2974                              $cgi->a({-href => href(project=>undef, order=>'age'),
2975                                       -class => "header"}, "Last Change") .
2976                              "</th>\n";
2977                }
2978                print "<th></th>\n" .
2979                      "</tr>\n";
2980        }
2981        my $alternate = 1;
2982        for (my $i = $from; $i <= $to; $i++) {
2983                my $pr = $projects[$i];
2984                if ($alternate) {
2985                        print "<tr class=\"dark\">\n";
2986                } else {
2987                        print "<tr class=\"light\">\n";
2988                }
2989                $alternate ^= 1;
2990                if ($check_forks) {
2991                        print "<td>";
2992                        if ($pr->{'forks'}) {
2993                                print "<!-- $pr->{'forks'} -->\n";
2994                                print $cgi->a({-href => href(project=>$pr->{'path'}, action=>"forks")}, "+");
2995                        }
2996                        print "</td>\n";
2997                }
2998                print "<td>" . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary"),
2999                                        -class => "list"}, esc_html($pr->{'path'})) . "</td>\n" .
3000                      "<td>" . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary"),
3001                                        -class => "list", -title => $pr->{'descr_long'}},
3002                                        esc_html($pr->{'descr'})) . "</td>\n" .
3003                      "<td><i>" . chop_str($pr->{'owner'}, 15) . "</i></td>\n";
3004                print "<td class=\"". age_class($pr->{'age'}) . "\">" .
3005                      (defined $pr->{'age_string'} ? $pr->{'age_string'} : "No commits") . "</td>\n" .
3006                      "<td class=\"link\">" .
3007                      $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary")}, "summary")   . " | " .
3008                      $cgi->a({-href => href(project=>$pr->{'path'}, action=>"shortlog")}, "shortlog") . " | " .
3009                      $cgi->a({-href => href(project=>$pr->{'path'}, action=>"log")}, "log") . " | " .
3010                      $cgi->a({-href => href(project=>$pr->{'path'}, action=>"tree")}, "tree") .
3011                      ($pr->{'forks'} ? " | " . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"forks")}, "forks") : '') .
3012                      "</td>\n" .
3013                      "</tr>\n";
3014        }
3015        if (defined $extra) {
3016                print "<tr>\n";
3017                if ($check_forks) {
3018                        print "<td></td>\n";
3019                }
3020                print "<td colspan=\"5\">$extra</td>\n" .
3021                      "</tr>\n";
3022        }
3023        print "</table>\n";
3024}
3025
3026sub git_shortlog_body {
3027        # uses global variable $project
3028        my ($commitlist, $from, $to, $refs, $extra) = @_;
3029
3030        my $have_snapshot = gitweb_have_snapshot();
3031
3032        $from = 0 unless defined $from;
3033        $to = $#{$commitlist} if (!defined $to || $#{$commitlist} < $to);
3034
3035        print "<table class=\"shortlog\" cellspacing=\"0\">\n";
3036        my $alternate = 1;
3037        for (my $i = $from; $i <= $to; $i++) {
3038                my %co = %{$commitlist->[$i]};
3039                my $commit = $co{'id'};
3040                my $ref = format_ref_marker($refs, $commit);
3041                if ($alternate) {
3042                        print "<tr class=\"dark\">\n";
3043                } else {
3044                        print "<tr class=\"light\">\n";
3045                }
3046                $alternate ^= 1;
3047                # git_summary() used print "<td><i>$co{'age_string'}</i></td>\n" .
3048                print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
3049                      "<td><i>" . esc_html(chop_str($co{'author_name'}, 10)) . "</i></td>\n" .
3050                      "<td>";
3051                print format_subject_html($co{'title'}, $co{'title_short'},
3052                                          href(action=>"commit", hash=>$commit), $ref);
3053                print "</td>\n" .
3054                      "<td class=\"link\">" .
3055                      $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") . " | " .
3056                      $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") . " | " .
3057                      $cgi->a({-href => href(action=>"tree", hash=>$commit, hash_base=>$commit)}, "tree");
3058                if ($have_snapshot) {
3059                        print " | " . $cgi->a({-href => href(action=>"snapshot", hash=>$commit)}, "snapshot");
3060                }
3061                print "</td>\n" .
3062                      "</tr>\n";
3063        }
3064        if (defined $extra) {
3065                print "<tr>\n" .
3066                      "<td colspan=\"4\">$extra</td>\n" .
3067                      "</tr>\n";
3068        }
3069        print "</table>\n";
3070}
3071
3072sub git_history_body {
3073        # Warning: assumes constant type (blob or tree) during history
3074        my ($commitlist, $from, $to, $refs, $hash_base, $ftype, $extra) = @_;
3075
3076        $from = 0 unless defined $from;
3077        $to = $#{$commitlist} unless (defined $to && $to <= $#{$commitlist});
3078
3079        print "<table class=\"history\" cellspacing=\"0\">\n";
3080        my $alternate = 1;
3081        for (my $i = $from; $i <= $to; $i++) {
3082                my %co = %{$commitlist->[$i]};
3083                if (!%co) {
3084                        next;
3085                }
3086                my $commit = $co{'id'};
3087
3088                my $ref = format_ref_marker($refs, $commit);
3089
3090                if ($alternate) {
3091                        print "<tr class=\"dark\">\n";
3092                } else {
3093                        print "<tr class=\"light\">\n";
3094                }
3095                $alternate ^= 1;
3096                print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
3097                      # shortlog uses      chop_str($co{'author_name'}, 10)
3098                      "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 3)) . "</i></td>\n" .
3099                      "<td>";
3100                # originally git_history used chop_str($co{'title'}, 50)
3101                print format_subject_html($co{'title'}, $co{'title_short'},
3102                                          href(action=>"commit", hash=>$commit), $ref);
3103                print "</td>\n" .
3104                      "<td class=\"link\">" .
3105                      $cgi->a({-href => href(action=>$ftype, hash_base=>$commit, file_name=>$file_name)}, $ftype) . " | " .
3106                      $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff");
3107
3108                if ($ftype eq 'blob') {
3109                        my $blob_current = git_get_hash_by_path($hash_base, $file_name);
3110                        my $blob_parent  = git_get_hash_by_path($commit, $file_name);
3111                        if (defined $blob_current && defined $blob_parent &&
3112                                        $blob_current ne $blob_parent) {
3113                                print " | " .
3114                                        $cgi->a({-href => href(action=>"blobdiff",
3115                                                               hash=>$blob_current, hash_parent=>$blob_parent,
3116                                                               hash_base=>$hash_base, hash_parent_base=>$commit,
3117                                                               file_name=>$file_name)},
3118                                                "diff to current");
3119                        }
3120                }
3121                print "</td>\n" .
3122                      "</tr>\n";
3123        }
3124        if (defined $extra) {
3125                print "<tr>\n" .
3126                      "<td colspan=\"4\">$extra</td>\n" .
3127                      "</tr>\n";
3128        }
3129        print "</table>\n";
3130}
3131
3132sub git_tags_body {
3133        # uses global variable $project
3134        my ($taglist, $from, $to, $extra) = @_;
3135        $from = 0 unless defined $from;
3136        $to = $#{$taglist} if (!defined $to || $#{$taglist} < $to);
3137
3138        print "<table class=\"tags\" cellspacing=\"0\">\n";
3139        my $alternate = 1;
3140        for (my $i = $from; $i <= $to; $i++) {
3141                my $entry = $taglist->[$i];
3142                my %tag = %$entry;
3143                my $comment = $tag{'subject'};
3144                my $comment_short;
3145                if (defined $comment) {
3146                        $comment_short = chop_str($comment, 30, 5);
3147                }
3148                if ($alternate) {
3149                        print "<tr class=\"dark\">\n";
3150                } else {
3151                        print "<tr class=\"light\">\n";
3152                }
3153                $alternate ^= 1;
3154                if (defined $tag{'age'}) {
3155                        print "<td><i>$tag{'age'}</i></td>\n";
3156                } else {
3157                        print "<td></td>\n";
3158                }
3159                print "<td>" .
3160                      $cgi->a({-href => href(action=>$tag{'reftype'}, hash=>$tag{'refid'}),
3161                               -class => "list name"}, esc_html($tag{'name'})) .
3162                      "</td>\n" .
3163                      "<td>";
3164                if (defined $comment) {
3165                        print format_subject_html($comment, $comment_short,
3166                                                  href(action=>"tag", hash=>$tag{'id'}));
3167                }
3168                print "</td>\n" .
3169                      "<td class=\"selflink\">";
3170                if ($tag{'type'} eq "tag") {
3171                        print $cgi->a({-href => href(action=>"tag", hash=>$tag{'id'})}, "tag");
3172                } else {
3173                        print "&nbsp;";
3174                }
3175                print "</td>\n" .
3176                      "<td class=\"link\">" . " | " .
3177                      $cgi->a({-href => href(action=>$tag{'reftype'}, hash=>$tag{'refid'})}, $tag{'reftype'});
3178                if ($tag{'reftype'} eq "commit") {
3179                        print " | " . $cgi->a({-href => href(action=>"shortlog", hash=>$tag{'name'})}, "shortlog") .
3180                              " | " . $cgi->a({-href => href(action=>"log", hash=>$tag{'name'})}, "log");
3181                } elsif ($tag{'reftype'} eq "blob") {
3182                        print " | " . $cgi->a({-href => href(action=>"blob_plain", hash=>$tag{'refid'})}, "raw");
3183                }
3184                print "</td>\n" .
3185                      "</tr>";
3186        }
3187        if (defined $extra) {
3188                print "<tr>\n" .
3189                      "<td colspan=\"5\">$extra</td>\n" .
3190                      "</tr>\n";
3191        }
3192        print "</table>\n";
3193}
3194
3195sub git_heads_body {
3196        # uses global variable $project
3197        my ($headlist, $head, $from, $to, $extra) = @_;
3198        $from = 0 unless defined $from;
3199        $to = $#{$headlist} if (!defined $to || $#{$headlist} < $to);
3200
3201        print "<table class=\"heads\" cellspacing=\"0\">\n";
3202        my $alternate = 1;
3203        for (my $i = $from; $i <= $to; $i++) {
3204                my $entry = $headlist->[$i];
3205                my %ref = %$entry;
3206                my $curr = $ref{'id'} eq $head;
3207                if ($alternate) {
3208                        print "<tr class=\"dark\">\n";
3209                } else {
3210                        print "<tr class=\"light\">\n";
3211                }
3212                $alternate ^= 1;
3213                print "<td><i>$ref{'age'}</i></td>\n" .
3214                      ($curr ? "<td class=\"current_head\">" : "<td>") .
3215                      $cgi->a({-href => href(action=>"shortlog", hash=>$ref{'name'}),
3216                               -class => "list name"},esc_html($ref{'name'})) .
3217                      "</td>\n" .
3218                      "<td class=\"link\">" .
3219                      $cgi->a({-href => href(action=>"shortlog", hash=>$ref{'name'})}, "shortlog") . " | " .
3220                      $cgi->a({-href => href(action=>"log", hash=>$ref{'name'})}, "log") . " | " .
3221                      $cgi->a({-href => href(action=>"tree", hash=>$ref{'name'}, hash_base=>$ref{'name'})}, "tree") .
3222                      "</td>\n" .
3223                      "</tr>";
3224        }
3225        if (defined $extra) {
3226                print "<tr>\n" .
3227                      "<td colspan=\"3\">$extra</td>\n" .
3228                      "</tr>\n";
3229        }
3230        print "</table>\n";
3231}
3232
3233sub git_search_grep_body {
3234        my ($commitlist, $from, $to, $extra) = @_;
3235        $from = 0 unless defined $from;
3236        $to = $#{$commitlist} if (!defined $to || $#{$commitlist} < $to);
3237
3238        print "<table class=\"grep\" cellspacing=\"0\">\n";
3239        my $alternate = 1;
3240        for (my $i = $from; $i <= $to; $i++) {
3241                my %co = %{$commitlist->[$i]};
3242                if (!%co) {
3243                        next;
3244                }
3245                my $commit = $co{'id'};
3246                if ($alternate) {
3247                        print "<tr class=\"dark\">\n";
3248                } else {
3249                        print "<tr class=\"light\">\n";
3250                }
3251                $alternate ^= 1;
3252                print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
3253                      "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 5)) . "</i></td>\n" .
3254                      "<td>" .
3255                      $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}), -class => "list subject"},
3256                               esc_html(chop_str($co{'title'}, 50)) . "<br/>");
3257                my $comment = $co{'comment'};
3258                foreach my $line (@$comment) {
3259                        if ($line =~ m/^(.*)($search_regexp)(.*)$/i) {
3260                                my $lead = esc_html($1) || "";
3261                                $lead = chop_str($lead, 30, 10);
3262                                my $match = esc_html($2) || "";
3263                                my $trail = esc_html($3) || "";
3264                                $trail = chop_str($trail, 30, 10);
3265                                my $text = "$lead<span class=\"match\">$match</span>$trail";
3266                                print chop_str($text, 80, 5) . "<br/>\n";
3267                        }
3268                }
3269                print "</td>\n" .
3270                      "<td class=\"link\">" .
3271                      $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})}, "commit") .
3272                      " | " .
3273                      $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$co{'id'})}, "tree");
3274                print "</td>\n" .
3275                      "</tr>\n";
3276        }
3277        if (defined $extra) {
3278                print "<tr>\n" .
3279                      "<td colspan=\"3\">$extra</td>\n" .
3280                      "</tr>\n";
3281        }
3282        print "</table>\n";
3283}
3284
3285## ======================================================================
3286## ======================================================================
3287## actions
3288
3289sub git_project_list {
3290        my $order = $cgi->param('o');
3291        if (defined $order && $order !~ m/none|project|descr|owner|age/) {
3292                die_error(undef, "Unknown order parameter");
3293        }
3294
3295        my @list = git_get_projects_list();
3296        if (!@list) {
3297                die_error(undef, "No projects found");
3298        }
3299
3300        git_header_html();
3301        if (-f $home_text) {
3302                print "<div class=\"index_include\">\n";
3303                open (my $fd, $home_text);
3304                print <$fd>;
3305                close $fd;
3306                print "</div>\n";
3307        }
3308        git_project_list_body(\@list, $order);
3309        git_footer_html();
3310}
3311
3312sub git_forks {
3313        my $order = $cgi->param('o');
3314        if (defined $order && $order !~ m/none|project|descr|owner|age/) {
3315                die_error(undef, "Unknown order parameter");
3316        }
3317
3318        my @list = git_get_projects_list($project);
3319        if (!@list) {
3320                die_error(undef, "No forks found");
3321        }
3322
3323        git_header_html();
3324        git_print_page_nav('','');
3325        git_print_header_div('summary', "$project forks");
3326        git_project_list_body(\@list, $order);
3327        git_footer_html();
3328}
3329
3330sub git_project_index {
3331        my @projects = git_get_projects_list($project);
3332
3333        print $cgi->header(
3334                -type => 'text/plain',
3335                -charset => 'utf-8',
3336                -content_disposition => 'inline; filename="index.aux"');
3337
3338        foreach my $pr (@projects) {
3339                if (!exists $pr->{'owner'}) {
3340                        $pr->{'owner'} = get_file_owner("$projectroot/$pr->{'path'}");
3341                }
3342
3343                my ($path, $owner) = ($pr->{'path'}, $pr->{'owner'});
3344                # quote as in CGI::Util::encode, but keep the slash, and use '+' for ' '
3345                $path  =~ s/([^a-zA-Z0-9_.\-\/ ])/sprintf("%%%02X", ord($1))/eg;
3346                $owner =~ s/([^a-zA-Z0-9_.\-\/ ])/sprintf("%%%02X", ord($1))/eg;
3347                $path  =~ s/ /\+/g;
3348                $owner =~ s/ /\+/g;
3349
3350                print "$path $owner\n";
3351        }
3352}
3353
3354sub git_summary {
3355        my $descr = git_get_project_description($project) || "none";
3356        my %co = parse_commit("HEAD");
3357        my %cd = %co ? parse_date($co{'committer_epoch'}, $co{'committer_tz'}) : ();
3358        my $head = $co{'id'};
3359
3360        my $owner = git_get_project_owner($project);
3361
3362        my $refs = git_get_references();
3363        # These get_*_list functions return one more to allow us to see if
3364        # there are more ...
3365        my @taglist  = git_get_tags_list(16);
3366        my @headlist = git_get_heads_list(16);
3367        my @forklist;
3368        my ($check_forks) = gitweb_check_feature('forks');
3369
3370        if ($check_forks) {
3371                @forklist = git_get_projects_list($project);
3372        }
3373
3374        git_header_html();
3375        git_print_page_nav('summary','', $head);
3376
3377        print "<div class=\"title\">&nbsp;</div>\n";
3378        print "<table cellspacing=\"0\">\n" .
3379              "<tr><td>description</td><td>" . esc_html($descr) . "</td></tr>\n" .
3380              "<tr><td>owner</td><td>$owner</td></tr>\n";
3381        if (defined $cd{'rfc2822'}) {
3382                print "<tr><td>last change</td><td>$cd{'rfc2822'}</td></tr>\n";
3383        }
3384
3385        # use per project git URL list in $projectroot/$project/cloneurl
3386        # or make project git URL from git base URL and project name
3387        my $url_tag = "URL";
3388        my @url_list = git_get_project_url_list($project);
3389        @url_list = map { "$_/$project" } @git_base_url_list unless @url_list;
3390        foreach my $git_url (@url_list) {
3391                next unless $git_url;
3392                print "<tr><td>$url_tag</td><td>$git_url</td></tr>\n";
3393                $url_tag = "";
3394        }
3395        print "</table>\n";
3396
3397        if (-s "$projectroot/$project/README.html") {
3398                if (open my $fd, "$projectroot/$project/README.html") {
3399                        print "<div class=\"title\">readme</div>\n";
3400                        print $_ while (<$fd>);
3401                        close $fd;
3402                }
3403        }
3404
3405        # we need to request one more than 16 (0..15) to check if
3406        # those 16 are all
3407        my @commitlist = $head ? parse_commits($head, 17) : ();
3408        if (@commitlist) {
3409                git_print_header_div('shortlog');
3410                git_shortlog_body(\@commitlist, 0, 15, $refs,
3411                                  $#commitlist <=  15 ? undef :
3412                                  $cgi->a({-href => href(action=>"shortlog")}, "..."));
3413        }
3414
3415        if (@taglist) {
3416                git_print_header_div('tags');
3417                git_tags_body(\@taglist, 0, 15,
3418                              $#taglist <=  15 ? undef :
3419                              $cgi->a({-href => href(action=>"tags")}, "..."));
3420        }
3421
3422        if (@headlist) {
3423                git_print_header_div('heads');
3424                git_heads_body(\@headlist, $head, 0, 15,
3425                               $#headlist <= 15 ? undef :
3426                               $cgi->a({-href => href(action=>"heads")}, "..."));
3427        }
3428
3429        if (@forklist) {
3430                git_print_header_div('forks');
3431                git_project_list_body(\@forklist, undef, 0, 15,
3432                                      $#forklist <= 15 ? undef :
3433                                      $cgi->a({-href => href(action=>"forks")}, "..."),
3434                                      'noheader');
3435        }
3436
3437        git_footer_html();
3438}
3439
3440sub git_tag {
3441        my $head = git_get_head_hash($project);
3442        git_header_html();
3443        git_print_page_nav('','', $head,undef,$head);
3444        my %tag = parse_tag($hash);
3445
3446        if (! %tag) {
3447                die_error(undef, "Unknown tag object");
3448        }
3449
3450        git_print_header_div('commit', esc_html($tag{'name'}), $hash);
3451        print "<div class=\"title_text\">\n" .
3452              "<table cellspacing=\"0\">\n" .
3453              "<tr>\n" .
3454              "<td>object</td>\n" .
3455              "<td>" . $cgi->a({-class => "list", -href => href(action=>$tag{'type'}, hash=>$tag{'object'})},
3456                               $tag{'object'}) . "</td>\n" .
3457              "<td class=\"link\">" . $cgi->a({-href => href(action=>$tag{'type'}, hash=>$tag{'object'})},
3458                                              $tag{'type'}) . "</td>\n" .
3459              "</tr>\n";
3460        if (defined($tag{'author'})) {
3461                my %ad = parse_date($tag{'epoch'}, $tag{'tz'});
3462                print "<tr><td>author</td><td>" . esc_html($tag{'author'}) . "</td></tr>\n";
3463                print "<tr><td></td><td>" . $ad{'rfc2822'} .
3464                        sprintf(" (%02d:%02d %s)", $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'}) .
3465                        "</td></tr>\n";
3466        }
3467        print "</table>\n\n" .
3468              "</div>\n";
3469        print "<div class=\"page_body\">";
3470        my $comment = $tag{'comment'};
3471        foreach my $line (@$comment) {
3472                chomp $line;
3473                print esc_html($line, -nbsp=>1) . "<br/>\n";
3474        }
3475        print "</div>\n";
3476        git_footer_html();
3477}
3478
3479sub git_blame2 {
3480        my $fd;
3481        my $ftype;
3482
3483        my ($have_blame) = gitweb_check_feature('blame');
3484        if (!$have_blame) {
3485                die_error('403 Permission denied', "Permission denied");
3486        }
3487        die_error('404 Not Found', "File name not defined") if (!$file_name);
3488        $hash_base ||= git_get_head_hash($project);
3489        die_error(undef, "Couldn't find base commit") unless ($hash_base);
3490        my %co = parse_commit($hash_base)
3491                or die_error(undef, "Reading commit failed");
3492        if (!defined $hash) {
3493                $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
3494                        or die_error(undef, "Error looking up file");
3495        }
3496        $ftype = git_get_type($hash);
3497        if ($ftype !~ "blob") {
3498                die_error('400 Bad Request', "Object is not a blob");
3499        }
3500        open ($fd, "-|", git_cmd(), "blame", '-p', '--',
3501              $file_name, $hash_base)
3502                or die_error(undef, "Open git-blame failed");
3503        git_header_html();
3504        my $formats_nav =
3505                $cgi->a({-href => href(action=>"blob", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
3506                        "blob") .
3507                " | " .
3508                $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
3509                        "history") .
3510                " | " .
3511                $cgi->a({-href => href(action=>"blame", file_name=>$file_name)},
3512                        "HEAD");
3513        git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
3514        git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
3515        git_print_page_path($file_name, $ftype, $hash_base);
3516        my @rev_color = (qw(light2 dark2));
3517        my $num_colors = scalar(@rev_color);
3518        my $current_color = 0;
3519        my $last_rev;
3520        print <<HTML;
3521<div class="page_body">
3522<table class="blame">
3523<tr><th>Commit</th><th>Line</th><th>Data</th></tr>
3524HTML
3525        my %metainfo = ();
3526        while (1) {
3527                $_ = <$fd>;
3528                last unless defined $_;
3529                my ($full_rev, $orig_lineno, $lineno, $group_size) =
3530                    /^([0-9a-f]{40}) (\d+) (\d+)(?: (\d+))?$/;
3531                if (!exists $metainfo{$full_rev}) {
3532                        $metainfo{$full_rev} = {};
3533                }
3534                my $meta = $metainfo{$full_rev};
3535                while (<$fd>) {
3536                        last if (s/^\t//);
3537                        if (/^(\S+) (.*)$/) {
3538                                $meta->{$1} = $2;
3539                        }
3540                }
3541                my $data = $_;
3542                chomp $data;
3543                my $rev = substr($full_rev, 0, 8);
3544                my $author = $meta->{'author'};
3545                my %date = parse_date($meta->{'author-time'},
3546                                      $meta->{'author-tz'});
3547                my $date = $date{'iso-tz'};
3548                if ($group_size) {
3549                        $current_color = ++$current_color % $num_colors;
3550                }
3551                print "<tr class=\"$rev_color[$current_color]\">\n";
3552                if ($group_size) {
3553                        print "<td class=\"sha1\"";
3554                        print " title=\"". esc_html($author) . ", $date\"";
3555                        print " rowspan=\"$group_size\"" if ($group_size > 1);
3556                        print ">";
3557                        print $cgi->a({-href => href(action=>"commit",
3558                                                     hash=>$full_rev,
3559                                                     file_name=>$file_name)},
3560                                      esc_html($rev));
3561                        print "</td>\n";
3562                }
3563                open (my $dd, "-|", git_cmd(), "rev-parse", "$full_rev^")
3564                        or die_error(undef, "Open git-rev-parse failed");
3565                my $parent_commit = <$dd>;
3566                close $dd;
3567                chomp($parent_commit);
3568                my $blamed = href(action => 'blame',
3569                                  file_name => $meta->{'filename'},
3570                                  hash_base => $parent_commit);
3571                print "<td class=\"linenr\">";
3572                print $cgi->a({ -href => "$blamed#l$orig_lineno",
3573                                -id => "l$lineno",
3574                                -class => "linenr" },
3575                              esc_html($lineno));
3576                print "</td>";
3577                print "<td class=\"pre\">" . esc_html($data) . "</td>\n";
3578                print "</tr>\n";
3579        }
3580        print "</table>\n";
3581        print "</div>";
3582        close $fd
3583                or print "Reading blob failed\n";
3584        git_footer_html();
3585}
3586
3587sub git_blame {
3588        my $fd;
3589
3590        my ($have_blame) = gitweb_check_feature('blame');
3591        if (!$have_blame) {
3592                die_error('403 Permission denied', "Permission denied");
3593        }
3594        die_error('404 Not Found', "File name not defined") if (!$file_name);
3595        $hash_base ||= git_get_head_hash($project);
3596        die_error(undef, "Couldn't find base commit") unless ($hash_base);
3597        my %co = parse_commit($hash_base)
3598                or die_error(undef, "Reading commit failed");
3599        if (!defined $hash) {
3600                $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
3601                        or die_error(undef, "Error lookup file");
3602        }
3603        open ($fd, "-|", git_cmd(), "annotate", '-l', '-t', '-r', $file_name, $hash_base)
3604                or die_error(undef, "Open git-annotate failed");
3605        git_header_html();
3606        my $formats_nav =
3607                $cgi->a({-href => href(action=>"blob", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
3608                        "blob") .
3609                " | " .
3610                $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
3611                        "history") .
3612                " | " .
3613                $cgi->a({-href => href(action=>"blame", file_name=>$file_name)},
3614                        "HEAD");
3615        git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
3616        git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
3617        git_print_page_path($file_name, 'blob', $hash_base);
3618        print "<div class=\"page_body\">\n";
3619        print <<HTML;
3620<table class="blame">
3621  <tr>
3622    <th>Commit</th>
3623    <th>Age</th>
3624    <th>Author</th>
3625    <th>Line</th>
3626    <th>Data</th>
3627  </tr>
3628HTML
3629        my @line_class = (qw(light dark));
3630        my $line_class_len = scalar (@line_class);
3631        my $line_class_num = $#line_class;
3632        while (my $line = <$fd>) {
3633                my $long_rev;
3634                my $short_rev;
3635                my $author;
3636                my $time;
3637                my $lineno;
3638                my $data;
3639                my $age;
3640                my $age_str;
3641                my $age_class;
3642
3643                chomp $line;
3644                $line_class_num = ($line_class_num + 1) % $line_class_len;
3645
3646                if ($line =~ m/^([0-9a-fA-F]{40})\t\(\s*([^\t]+)\t(\d+) [+-]\d\d\d\d\t(\d+)\)(.*)$/) {
3647                        $long_rev = $1;
3648                        $author   = $2;
3649                        $time     = $3;
3650                        $lineno   = $4;
3651                        $data     = $5;
3652                } else {
3653                        print qq(  <tr><td colspan="5" class="error">Unable to parse: $line</td></tr>\n);
3654                        next;
3655                }
3656                $short_rev  = substr ($long_rev, 0, 8);
3657                $age        = time () - $time;
3658                $age_str    = age_string ($age);
3659                $age_str    =~ s/ /&nbsp;/g;
3660                $age_class  = age_class($age);
3661                $author     = esc_html ($author);
3662                $author     =~ s/ /&nbsp;/g;
3663
3664                $data = untabify($data);
3665                $data = esc_html ($data);
3666
3667                print <<HTML;
3668  <tr class="$line_class[$line_class_num]">
3669    <td class="sha1"><a href="${\href (action=>"commit", hash=>$long_rev)}" class="text">$short_rev..</a></td>
3670    <td class="$age_class">$age_str</td>
3671    <td>$author</td>
3672    <td class="linenr"><a id="$lineno" href="#$lineno" class="linenr">$lineno</a></td>
3673    <td class="pre">$data</td>
3674  </tr>
3675HTML
3676        } # while (my $line = <$fd>)
3677        print "</table>\n\n";
3678        close $fd
3679                or print "Reading blob failed.\n";
3680        print "</div>";
3681        git_footer_html();
3682}
3683
3684sub git_tags {
3685        my $head = git_get_head_hash($project);
3686        git_header_html();
3687        git_print_page_nav('','', $head,undef,$head);
3688        git_print_header_div('summary', $project);
3689
3690        my @tagslist = git_get_tags_list();
3691        if (@tagslist) {
3692                git_tags_body(\@tagslist);
3693        }
3694        git_footer_html();
3695}
3696
3697sub git_heads {
3698        my $head = git_get_head_hash($project);
3699        git_header_html();
3700        git_print_page_nav('','', $head,undef,$head);
3701        git_print_header_div('summary', $project);
3702
3703        my @headslist = git_get_heads_list();
3704        if (@headslist) {
3705                git_heads_body(\@headslist, $head);
3706        }
3707        git_footer_html();
3708}
3709
3710sub git_blob_plain {
3711        my $expires;
3712
3713        if (!defined $hash) {
3714                if (defined $file_name) {
3715                        my $base = $hash_base || git_get_head_hash($project);
3716                        $hash = git_get_hash_by_path($base, $file_name, "blob")
3717                                or die_error(undef, "Error lookup file");
3718                } else {
3719                        die_error(undef, "No file name defined");
3720                }
3721        } elsif ($hash =~ m/^[0-9a-fA-F]{40}$/) {
3722                # blobs defined by non-textual hash id's can be cached
3723                $expires = "+1d";
3724        }
3725
3726        my $type = shift;
3727        open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
3728                or die_error(undef, "Couldn't cat $file_name, $hash");
3729
3730        $type ||= blob_mimetype($fd, $file_name);
3731
3732        # save as filename, even when no $file_name is given
3733        my $save_as = "$hash";
3734        if (defined $file_name) {
3735                $save_as = $file_name;
3736        } elsif ($type =~ m/^text\//) {
3737                $save_as .= '.txt';
3738        }
3739
3740        print $cgi->header(
3741                -type => "$type",
3742                -expires=>$expires,
3743                -content_disposition => 'inline; filename="' . "$save_as" . '"');
3744        undef $/;
3745        binmode STDOUT, ':raw';
3746        print <$fd>;
3747        binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
3748        $/ = "\n";
3749        close $fd;
3750}
3751
3752sub git_blob {
3753        my $expires;
3754
3755        if (!defined $hash) {
3756                if (defined $file_name) {
3757                        my $base = $hash_base || git_get_head_hash($project);
3758                        $hash = git_get_hash_by_path($base, $file_name, "blob")
3759                                or die_error(undef, "Error lookup file");
3760                } else {
3761                        die_error(undef, "No file name defined");
3762                }
3763        } elsif ($hash =~ m/^[0-9a-fA-F]{40}$/) {
3764                # blobs defined by non-textual hash id's can be cached
3765                $expires = "+1d";
3766        }
3767
3768        my ($have_blame) = gitweb_check_feature('blame');
3769        open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
3770                or die_error(undef, "Couldn't cat $file_name, $hash");
3771        my $mimetype = blob_mimetype($fd, $file_name);
3772        if ($mimetype !~ m!^(?:text/|image/(?:gif|png|jpeg)$)!) {
3773                close $fd;
3774                return git_blob_plain($mimetype);
3775        }
3776        # we can have blame only for text/* mimetype
3777        $have_blame &&= ($mimetype =~ m!^text/!);
3778
3779        git_header_html(undef, $expires);
3780        my $formats_nav = '';
3781        if (defined $hash_base && (my %co = parse_commit($hash_base))) {
3782                if (defined $file_name) {
3783                        if ($have_blame) {
3784                                $formats_nav .=
3785                                        $cgi->a({-href => href(action=>"blame", hash_base=>$hash_base,
3786                                                               hash=>$hash, file_name=>$file_name)},
3787                                                "blame") .
3788                                        " | ";
3789                        }
3790                        $formats_nav .=
3791                                $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
3792                                                       hash=>$hash, file_name=>$file_name)},
3793                                        "history") .
3794                                " | " .
3795                                $cgi->a({-href => href(action=>"blob_plain",
3796                                                       hash=>$hash, file_name=>$file_name)},
3797                                        "raw") .
3798                                " | " .
3799                                $cgi->a({-href => href(action=>"blob",
3800                                                       hash_base=>"HEAD", file_name=>$file_name)},
3801                                        "HEAD");
3802                } else {
3803                        $formats_nav .=
3804                                $cgi->a({-href => href(action=>"blob_plain", hash=>$hash)}, "raw");
3805                }
3806                git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
3807                git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
3808        } else {
3809                print "<div class=\"page_nav\">\n" .
3810                      "<br/><br/></div>\n" .
3811                      "<div class=\"title\">$hash</div>\n";
3812        }
3813        git_print_page_path($file_name, "blob", $hash_base);
3814        print "<div class=\"page_body\">\n";
3815        if ($mimetype =~ m!^text/!) {
3816                my $nr;
3817                while (my $line = <$fd>) {
3818                        chomp $line;
3819                        $nr++;
3820                        $line = untabify($line);
3821                        printf "<div class=\"pre\"><a id=\"l%i\" href=\"#l%i\" class=\"linenr\">%4i</a> %s</div>\n",
3822                               $nr, $nr, $nr, esc_html($line, -nbsp=>1);
3823                }
3824        } elsif ($mimetype =~ m!^image/!) {
3825                print qq!<img type="$mimetype"!;
3826                if ($file_name) {
3827                        print qq! alt="$file_name" title="$file_name"!;
3828                }
3829                print qq! src="! .
3830                      href(action=>"blob_plain", hash=>$hash,
3831                           hash_base=>$hash_base, file_name=>$file_name) .
3832                      qq!" />\n!;
3833        }
3834        close $fd
3835                or print "Reading blob failed.\n";
3836        print "</div>";
3837        git_footer_html();
3838}
3839
3840sub git_tree {
3841        my $have_snapshot = gitweb_have_snapshot();
3842
3843        if (!defined $hash_base) {
3844                $hash_base = "HEAD";
3845        }
3846        if (!defined $hash) {
3847                if (defined $file_name) {
3848                        $hash = git_get_hash_by_path($hash_base, $file_name, "tree");
3849                } else {
3850                        $hash = $hash_base;
3851                }
3852        }
3853        $/ = "\0";
3854        open my $fd, "-|", git_cmd(), "ls-tree", '-z', $hash
3855                or die_error(undef, "Open git-ls-tree failed");
3856        my @entries = map { chomp; $_ } <$fd>;
3857        close $fd or die_error(undef, "Reading tree failed");
3858        $/ = "\n";
3859
3860        my $refs = git_get_references();
3861        my $ref = format_ref_marker($refs, $hash_base);
3862        git_header_html();
3863        my $basedir = '';
3864        my ($have_blame) = gitweb_check_feature('blame');
3865        if (defined $hash_base && (my %co = parse_commit($hash_base))) {
3866                my @views_nav = ();
3867                if (defined $file_name) {
3868                        push @views_nav,
3869                                $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
3870                                                       hash=>$hash, file_name=>$file_name)},
3871                                        "history"),
3872                                $cgi->a({-href => href(action=>"tree",
3873                                                       hash_base=>"HEAD", file_name=>$file_name)},
3874                                        "HEAD"),
3875                }
3876                if ($have_snapshot) {
3877                        # FIXME: Should be available when we have no hash base as well.
3878                        push @views_nav,
3879                                $cgi->a({-href => href(action=>"snapshot", hash=>$hash)},
3880                                        "snapshot");
3881                }
3882                git_print_page_nav('tree','', $hash_base, undef, undef, join(' | ', @views_nav));
3883                git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash_base);
3884        } else {
3885                undef $hash_base;
3886                print "<div class=\"page_nav\">\n";
3887                print "<br/><br/></div>\n";
3888                print "<div class=\"title\">$hash</div>\n";
3889        }
3890        if (defined $file_name) {
3891                $basedir = $file_name;
3892                if ($basedir ne '' && substr($basedir, -1) ne '/') {
3893                        $basedir .= '/';
3894                }
3895        }
3896        git_print_page_path($file_name, 'tree', $hash_base);
3897        print "<div class=\"page_body\">\n";
3898        print "<table cellspacing=\"0\">\n";
3899        my $alternate = 1;
3900        # '..' (top directory) link if possible
3901        if (defined $hash_base &&
3902            defined $file_name && $file_name =~ m![^/]+$!) {
3903                if ($alternate) {
3904                        print "<tr class=\"dark\">\n";
3905                } else {
3906                        print "<tr class=\"light\">\n";
3907                }
3908                $alternate ^= 1;
3909
3910                my $up = $file_name;
3911                $up =~ s!/?[^/]+$!!;
3912                undef $up unless $up;
3913                # based on git_print_tree_entry
3914                print '<td class="mode">' . mode_str('040000') . "</td>\n";
3915                print '<td class="list">';
3916                print $cgi->a({-href => href(action=>"tree", hash_base=>$hash_base,
3917                                             file_name=>$up)},
3918                              "..");
3919                print "</td>\n";
3920                print "<td class=\"link\"></td>\n";
3921
3922                print "</tr>\n";
3923        }
3924        foreach my $line (@entries) {
3925                my %t = parse_ls_tree_line($line, -z => 1);
3926
3927                if ($alternate) {
3928                        print "<tr class=\"dark\">\n";
3929                } else {
3930                        print "<tr class=\"light\">\n";
3931                }
3932                $alternate ^= 1;
3933
3934                git_print_tree_entry(\%t, $basedir, $hash_base, $have_blame);
3935
3936                print "</tr>\n";
3937        }
3938        print "</table>\n" .
3939              "</div>";
3940        git_footer_html();
3941}
3942
3943sub git_snapshot {
3944        my ($ctype, $suffix, $command) = gitweb_check_feature('snapshot');
3945        my $have_snapshot = (defined $ctype && defined $suffix);
3946        if (!$have_snapshot) {
3947                die_error('403 Permission denied', "Permission denied");
3948        }
3949
3950        if (!defined $hash) {
3951                $hash = git_get_head_hash($project);
3952        }
3953
3954        my $filename = decode_utf8(basename($project)) . "-$hash.tar.$suffix";
3955
3956        print $cgi->header(
3957                -type => "application/$ctype",
3958                -content_disposition => 'inline; filename="' . "$filename" . '"',
3959                -status => '200 OK');
3960
3961        my $git = git_cmd_str();
3962        my $name = $project;
3963        $name =~ s/\047/\047\\\047\047/g;
3964        open my $fd, "-|",
3965                "$git archive --format=tar --prefix=\'$name\'/ $hash | $command"
3966                or die_error(undef, "Execute git-tar-tree failed");
3967        binmode STDOUT, ':raw';
3968        print <$fd>;
3969        binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
3970        close $fd;
3971
3972}
3973
3974sub git_log {
3975        my $head = git_get_head_hash($project);
3976        if (!defined $hash) {
3977                $hash = $head;
3978        }
3979        if (!defined $page) {
3980                $page = 0;
3981        }
3982        my $refs = git_get_references();
3983
3984        my @commitlist = parse_commits($hash, 101, (100 * $page));
3985
3986        my $paging_nav = format_paging_nav('log', $hash, $head, $page, (100 * ($page+1)));
3987
3988        git_header_html();
3989        git_print_page_nav('log','', $hash,undef,undef, $paging_nav);
3990
3991        if (!@commitlist) {
3992                my %co = parse_commit($hash);
3993
3994                git_print_header_div('summary', $project);
3995                print "<div class=\"page_body\"> Last change $co{'age_string'}.<br/><br/></div>\n";
3996        }
3997        my $to = ($#commitlist >= 99) ? (99) : ($#commitlist);
3998        for (my $i = 0; $i <= $to; $i++) {
3999                my %co = %{$commitlist[$i]};
4000                next if !%co;
4001                my $commit = $co{'id'};
4002                my $ref = format_ref_marker($refs, $commit);
4003                my %ad = parse_date($co{'author_epoch'});
4004                git_print_header_div('commit',
4005                               "<span class=\"age\">$co{'age_string'}</span>" .
4006                               esc_html($co{'title'}) . $ref,
4007                               $commit);
4008                print "<div class=\"title_text\">\n" .
4009                      "<div class=\"log_link\">\n" .
4010                      $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") .
4011                      " | " .
4012                      $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") .
4013                      " | " .
4014                      $cgi->a({-href => href(action=>"tree", hash=>$commit, hash_base=>$commit)}, "tree") .
4015                      "<br/>\n" .
4016                      "</div>\n" .
4017                      "<i>" . esc_html($co{'author_name'}) .  " [$ad{'rfc2822'}]</i><br/>\n" .
4018                      "</div>\n";
4019
4020                print "<div class=\"log_body\">\n";
4021                git_print_log($co{'comment'}, -final_empty_line=> 1);
4022                print "</div>\n";
4023        }
4024        if ($#commitlist >= 100) {
4025                print "<div class=\"page_nav\">\n";
4026                print $cgi->a({-href => href(action=>"log", hash=>$hash, page=>$page+1),
4027                               -accesskey => "n", -title => "Alt-n"}, "next");
4028                print "</div>\n";
4029        }
4030        git_footer_html();
4031}
4032
4033sub git_commit {
4034        $hash ||= $hash_base || "HEAD";
4035        my %co = parse_commit($hash);
4036        if (!%co) {
4037                die_error(undef, "Unknown commit object");
4038        }
4039        my %ad = parse_date($co{'author_epoch'}, $co{'author_tz'});
4040        my %cd = parse_date($co{'committer_epoch'}, $co{'committer_tz'});
4041
4042        my $parent  = $co{'parent'};
4043        my $parents = $co{'parents'}; # listref
4044
4045        # we need to prepare $formats_nav before any parameter munging
4046        my $formats_nav;
4047        if (!defined $parent) {
4048                # --root commitdiff
4049                $formats_nav .= '(initial)';
4050        } elsif (@$parents == 1) {
4051                # single parent commit
4052                $formats_nav .=
4053                        '(parent: ' .
4054                        $cgi->a({-href => href(action=>"commit",
4055                                               hash=>$parent)},
4056                                esc_html(substr($parent, 0, 7))) .
4057                        ')';
4058        } else {
4059                # merge commit
4060                $formats_nav .=
4061                        '(merge: ' .
4062                        join(' ', map {
4063                                $cgi->a({-href => href(action=>"commit",
4064                                                       hash=>$_)},
4065                                        esc_html(substr($_, 0, 7)));
4066                        } @$parents ) .
4067                        ')';
4068        }
4069
4070        if (!defined $parent) {
4071                $parent = "--root";
4072        }
4073        my @difftree;
4074        open my $fd, "-|", git_cmd(), "diff-tree", '-r', "--no-commit-id",
4075                @diff_opts,
4076                (@$parents <= 1 ? $parent : '-c'),
4077                $hash, "--"
4078                or die_error(undef, "Open git-diff-tree failed");
4079        @difftree = map { chomp; $_ } <$fd>;
4080        close $fd or die_error(undef, "Reading git-diff-tree failed");
4081
4082        # non-textual hash id's can be cached
4083        my $expires;
4084        if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
4085                $expires = "+1d";
4086        }
4087        my $refs = git_get_references();
4088        my $ref = format_ref_marker($refs, $co{'id'});
4089
4090        my $have_snapshot = gitweb_have_snapshot();
4091
4092        git_header_html(undef, $expires);
4093        git_print_page_nav('commit', '',
4094                           $hash, $co{'tree'}, $hash,
4095                           $formats_nav);
4096
4097        if (defined $co{'parent'}) {
4098                git_print_header_div('commitdiff', esc_html($co{'title'}) . $ref, $hash);
4099        } else {
4100                git_print_header_div('tree', esc_html($co{'title'}) . $ref, $co{'tree'}, $hash);
4101        }
4102        print "<div class=\"title_text\">\n" .
4103              "<table cellspacing=\"0\">\n";
4104        print "<tr><td>author</td><td>" . esc_html($co{'author'}) . "</td></tr>\n".
4105              "<tr>" .
4106              "<td></td><td> $ad{'rfc2822'}";
4107        if ($ad{'hour_local'} < 6) {
4108                printf(" (<span class=\"atnight\">%02d:%02d</span> %s)",
4109                       $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
4110        } else {
4111                printf(" (%02d:%02d %s)",
4112                       $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
4113        }
4114        print "</td>" .
4115              "</tr>\n";
4116        print "<tr><td>committer</td><td>" . esc_html($co{'committer'}) . "</td></tr>\n";
4117        print "<tr><td></td><td> $cd{'rfc2822'}" .
4118              sprintf(" (%02d:%02d %s)", $cd{'hour_local'}, $cd{'minute_local'}, $cd{'tz_local'}) .
4119              "</td></tr>\n";
4120        print "<tr><td>commit</td><td class=\"sha1\">$co{'id'}</td></tr>\n";
4121        print "<tr>" .
4122              "<td>tree</td>" .
4123              "<td class=\"sha1\">" .
4124              $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash),
4125                       class => "list"}, $co{'tree'}) .
4126              "</td>" .
4127              "<td class=\"link\">" .
4128              $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash)},
4129                      "tree");
4130        if ($have_snapshot) {
4131                print " | " .
4132                      $cgi->a({-href => href(action=>"snapshot", hash=>$hash)}, "snapshot");
4133        }
4134        print "</td>" .
4135              "</tr>\n";
4136
4137        foreach my $par (@$parents) {
4138                print "<tr>" .
4139                      "<td>parent</td>" .
4140                      "<td class=\"sha1\">" .
4141                      $cgi->a({-href => href(action=>"commit", hash=>$par),
4142                               class => "list"}, $par) .
4143                      "</td>" .
4144                      "<td class=\"link\">" .
4145                      $cgi->a({-href => href(action=>"commit", hash=>$par)}, "commit") .
4146                      " | " .
4147                      $cgi->a({-href => href(action=>"commitdiff", hash=>$hash, hash_parent=>$par)}, "diff") .
4148                      "</td>" .
4149                      "</tr>\n";
4150        }
4151        print "</table>".
4152              "</div>\n";
4153
4154        print "<div class=\"page_body\">\n";
4155        git_print_log($co{'comment'});
4156        print "</div>\n";
4157
4158        git_difftree_body(\@difftree, $hash, @$parents);
4159
4160        git_footer_html();
4161}
4162
4163sub git_object {
4164        # object is defined by:
4165        # - hash or hash_base alone
4166        # - hash_base and file_name
4167        my $type;
4168
4169        # - hash or hash_base alone
4170        if ($hash || ($hash_base && !defined $file_name)) {
4171                my $object_id = $hash || $hash_base;
4172
4173                my $git_command = git_cmd_str();
4174                open my $fd, "-|", "$git_command cat-file -t $object_id 2>/dev/null"
4175                        or die_error('404 Not Found', "Object does not exist");
4176                $type = <$fd>;
4177                chomp $type;
4178                close $fd
4179                        or die_error('404 Not Found', "Object does not exist");
4180
4181        # - hash_base and file_name
4182        } elsif ($hash_base && defined $file_name) {
4183                $file_name =~ s,/+$,,;
4184
4185                system(git_cmd(), "cat-file", '-e', $hash_base) == 0
4186                        or die_error('404 Not Found', "Base object does not exist");
4187
4188                # here errors should not hapen
4189                open my $fd, "-|", git_cmd(), "ls-tree", $hash_base, "--", $file_name
4190                        or die_error(undef, "Open git-ls-tree failed");
4191                my $line = <$fd>;
4192                close $fd;
4193
4194                #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
4195                unless ($line && $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t/) {
4196                        die_error('404 Not Found', "File or directory for given base does not exist");
4197                }
4198                $type = $2;
4199                $hash = $3;
4200        } else {
4201                die_error('404 Not Found', "Not enough information to find object");
4202        }
4203
4204        print $cgi->redirect(-uri => href(action=>$type, -full=>1,
4205                                          hash=>$hash, hash_base=>$hash_base,
4206                                          file_name=>$file_name),
4207                             -status => '302 Found');
4208}
4209
4210sub git_blobdiff {
4211        my $format = shift || 'html';
4212
4213        my $fd;
4214        my @difftree;
4215        my %diffinfo;
4216        my $expires;
4217
4218        # preparing $fd and %diffinfo for git_patchset_body
4219        # new style URI
4220        if (defined $hash_base && defined $hash_parent_base) {
4221                if (defined $file_name) {
4222                        # read raw output
4223                        open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4224                                $hash_parent_base, $hash_base,
4225                                "--", (defined $file_parent ? $file_parent : ()), $file_name
4226                                or die_error(undef, "Open git-diff-tree failed");
4227                        @difftree = map { chomp; $_ } <$fd>;
4228                        close $fd
4229                                or die_error(undef, "Reading git-diff-tree failed");
4230                        @difftree
4231                                or die_error('404 Not Found', "Blob diff not found");
4232
4233                } elsif (defined $hash &&
4234                         $hash =~ /[0-9a-fA-F]{40}/) {
4235                        # try to find filename from $hash
4236
4237                        # read filtered raw output
4238                        open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4239                                $hash_parent_base, $hash_base, "--"
4240                                or die_error(undef, "Open git-diff-tree failed");
4241                        @difftree =
4242                                # ':100644 100644 03b21826... 3b93d5e7... M     ls-files.c'
4243                                # $hash == to_id
4244                                grep { /^:[0-7]{6} [0-7]{6} [0-9a-fA-F]{40} $hash/ }
4245                                map { chomp; $_ } <$fd>;
4246                        close $fd
4247                                or die_error(undef, "Reading git-diff-tree failed");
4248                        @difftree
4249                                or die_error('404 Not Found', "Blob diff not found");
4250
4251                } else {
4252                        die_error('404 Not Found', "Missing one of the blob diff parameters");
4253                }
4254
4255                if (@difftree > 1) {
4256                        die_error('404 Not Found', "Ambiguous blob diff specification");
4257                }
4258
4259                %diffinfo = parse_difftree_raw_line($difftree[0]);
4260                $file_parent ||= $diffinfo{'from_file'} || $file_name || $diffinfo{'file'};
4261                $file_name   ||= $diffinfo{'to_file'}   || $diffinfo{'file'};
4262
4263                $hash_parent ||= $diffinfo{'from_id'};
4264                $hash        ||= $diffinfo{'to_id'};
4265
4266                # non-textual hash id's can be cached
4267                if ($hash_base =~ m/^[0-9a-fA-F]{40}$/ &&
4268                    $hash_parent_base =~ m/^[0-9a-fA-F]{40}$/) {
4269                        $expires = '+1d';
4270                }
4271
4272                # open patch output
4273                open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4274                        '-p', ($format eq 'html' ? "--full-index" : ()),
4275                        $hash_parent_base, $hash_base,
4276                        "--", (defined $file_parent ? $file_parent : ()), $file_name
4277                        or die_error(undef, "Open git-diff-tree failed");
4278        }
4279
4280        # old/legacy style URI
4281        if (!%diffinfo && # if new style URI failed
4282            defined $hash && defined $hash_parent) {
4283                # fake git-diff-tree raw output
4284                $diffinfo{'from_mode'} = $diffinfo{'to_mode'} = "blob";
4285                $diffinfo{'from_id'} = $hash_parent;
4286                $diffinfo{'to_id'}   = $hash;
4287                if (defined $file_name) {
4288                        if (defined $file_parent) {
4289                                $diffinfo{'status'} = '2';
4290                                $diffinfo{'from_file'} = $file_parent;
4291                                $diffinfo{'to_file'}   = $file_name;
4292                        } else { # assume not renamed
4293                                $diffinfo{'status'} = '1';
4294                                $diffinfo{'from_file'} = $file_name;
4295                                $diffinfo{'to_file'}   = $file_name;
4296                        }
4297                } else { # no filename given
4298                        $diffinfo{'status'} = '2';
4299                        $diffinfo{'from_file'} = $hash_parent;
4300                        $diffinfo{'to_file'}   = $hash;
4301                }
4302
4303                # non-textual hash id's can be cached
4304                if ($hash =~ m/^[0-9a-fA-F]{40}$/ &&
4305                    $hash_parent =~ m/^[0-9a-fA-F]{40}$/) {
4306                        $expires = '+1d';
4307                }
4308
4309                # open patch output
4310                open $fd, "-|", git_cmd(), "diff", @diff_opts,
4311                        '-p', ($format eq 'html' ? "--full-index" : ()),
4312                        $hash_parent, $hash, "--"
4313                        or die_error(undef, "Open git-diff failed");
4314        } else  {
4315                die_error('404 Not Found', "Missing one of the blob diff parameters")
4316                        unless %diffinfo;
4317        }
4318
4319        # header
4320        if ($format eq 'html') {
4321                my $formats_nav =
4322                        $cgi->a({-href => href(action=>"blobdiff_plain",
4323                                               hash=>$hash, hash_parent=>$hash_parent,
4324                                               hash_base=>$hash_base, hash_parent_base=>$hash_parent_base,
4325                                               file_name=>$file_name, file_parent=>$file_parent)},
4326                                "raw");
4327                git_header_html(undef, $expires);
4328                if (defined $hash_base && (my %co = parse_commit($hash_base))) {
4329                        git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
4330                        git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
4331                } else {
4332                        print "<div class=\"page_nav\"><br/>$formats_nav<br/></div>\n";
4333                        print "<div class=\"title\">$hash vs $hash_parent</div>\n";
4334                }
4335                if (defined $file_name) {
4336                        git_print_page_path($file_name, "blob", $hash_base);
4337                } else {
4338                        print "<div class=\"page_path\"></div>\n";
4339                }
4340
4341        } elsif ($format eq 'plain') {
4342                print $cgi->header(
4343                        -type => 'text/plain',
4344                        -charset => 'utf-8',
4345                        -expires => $expires,
4346                        -content_disposition => 'inline; filename="' . "$file_name" . '.patch"');
4347
4348                print "X-Git-Url: " . $cgi->self_url() . "\n\n";
4349
4350        } else {
4351                die_error(undef, "Unknown blobdiff format");
4352        }
4353
4354        # patch
4355        if ($format eq 'html') {
4356                print "<div class=\"page_body\">\n";
4357
4358                git_patchset_body($fd, [ \%diffinfo ], $hash_base, $hash_parent_base);
4359                close $fd;
4360
4361                print "</div>\n"; # class="page_body"
4362                git_footer_html();
4363
4364        } else {
4365                while (my $line = <$fd>) {
4366                        $line =~ s!a/($hash|$hash_parent)!'a/'.esc_path($diffinfo{'from_file'})!eg;
4367                        $line =~ s!b/($hash|$hash_parent)!'b/'.esc_path($diffinfo{'to_file'})!eg;
4368
4369                        print $line;
4370
4371                        last if $line =~ m!^\+\+\+!;
4372                }
4373                local $/ = undef;
4374                print <$fd>;
4375                close $fd;
4376        }
4377}
4378
4379sub git_blobdiff_plain {
4380        git_blobdiff('plain');
4381}
4382
4383sub git_commitdiff {
4384        my $format = shift || 'html';
4385        $hash ||= $hash_base || "HEAD";
4386        my %co = parse_commit($hash);
4387        if (!%co) {
4388                die_error(undef, "Unknown commit object");
4389        }
4390
4391        # we need to prepare $formats_nav before any parameter munging
4392        my $formats_nav;
4393        if ($format eq 'html') {
4394                $formats_nav =
4395                        $cgi->a({-href => href(action=>"commitdiff_plain",
4396                                               hash=>$hash, hash_parent=>$hash_parent)},
4397                                "raw");
4398
4399                if (defined $hash_parent) {
4400                        # commitdiff with two commits given
4401                        my $hash_parent_short = $hash_parent;
4402                        if ($hash_parent =~ m/^[0-9a-fA-F]{40}$/) {
4403                                $hash_parent_short = substr($hash_parent, 0, 7);
4404                        }
4405                        $formats_nav .=
4406                                ' (from: ' .
4407                                $cgi->a({-href => href(action=>"commitdiff",
4408                                                       hash=>$hash_parent)},
4409                                        esc_html($hash_parent_short)) .
4410                                ')';
4411                } elsif (!$co{'parent'}) {
4412                        # --root commitdiff
4413                        $formats_nav .= ' (initial)';
4414                } elsif (scalar @{$co{'parents'}} == 1) {
4415                        # single parent commit
4416                        $formats_nav .=
4417                                ' (parent: ' .
4418                                $cgi->a({-href => href(action=>"commitdiff",
4419                                                       hash=>$co{'parent'})},
4420                                        esc_html(substr($co{'parent'}, 0, 7))) .
4421                                ')';
4422                } else {
4423                        # merge commit
4424                        $formats_nav .=
4425                                ' (merge: ' .
4426                                join(' ', map {
4427                                        $cgi->a({-href => href(action=>"commitdiff",
4428                                                               hash=>$_)},
4429                                                esc_html(substr($_, 0, 7)));
4430                                } @{$co{'parents'}} ) .
4431                                ')';
4432                }
4433        }
4434
4435        my $hash_parent_param = $hash_parent;
4436        if (!defined $hash_parent) {
4437                $hash_parent_param =
4438                        @{$co{'parents'}} > 1 ? '-c' : $co{'parent'} || '--root';
4439        }
4440
4441        # read commitdiff
4442        my $fd;
4443        my @difftree;
4444        if ($format eq 'html') {
4445                open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4446                        "--no-commit-id", "--patch-with-raw", "--full-index",
4447                        $hash_parent_param, $hash, "--"
4448                        or die_error(undef, "Open git-diff-tree failed");
4449
4450                while (my $line = <$fd>) {
4451                        chomp $line;
4452                        # empty line ends raw part of diff-tree output
4453                        last unless $line;
4454                        push @difftree, scalar parse_difftree_raw_line($line);
4455                }
4456
4457        } elsif ($format eq 'plain') {
4458                open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4459                        '-p', $hash_parent_param, $hash, "--"
4460                        or die_error(undef, "Open git-diff-tree failed");
4461
4462        } else {
4463                die_error(undef, "Unknown commitdiff format");
4464        }
4465
4466        # non-textual hash id's can be cached
4467        my $expires;
4468        if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
4469                $expires = "+1d";
4470        }
4471
4472        # write commit message
4473        if ($format eq 'html') {
4474                my $refs = git_get_references();
4475                my $ref = format_ref_marker($refs, $co{'id'});
4476
4477                git_header_html(undef, $expires);
4478                git_print_page_nav('commitdiff','', $hash,$co{'tree'},$hash, $formats_nav);
4479                git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash);
4480                git_print_authorship(\%co);
4481                print "<div class=\"page_body\">\n";
4482                if (@{$co{'comment'}} > 1) {
4483                        print "<div class=\"log\">\n";
4484                        git_print_log($co{'comment'}, -final_empty_line=> 1, -remove_title => 1);
4485                        print "</div>\n"; # class="log"
4486                }
4487
4488        } elsif ($format eq 'plain') {
4489                my $refs = git_get_references("tags");
4490                my $tagname = git_get_rev_name_tags($hash);
4491                my $filename = basename($project) . "-$hash.patch";
4492
4493                print $cgi->header(
4494                        -type => 'text/plain',
4495                        -charset => 'utf-8',
4496                        -expires => $expires,
4497                        -content_disposition => 'inline; filename="' . "$filename" . '"');
4498                my %ad = parse_date($co{'author_epoch'}, $co{'author_tz'});
4499                print <<TEXT;
4500From: $co{'author'}
4501Date: $ad{'rfc2822'} ($ad{'tz_local'})
4502Subject: $co{'title'}
4503TEXT
4504                print "X-Git-Tag: $tagname\n" if $tagname;
4505                print "X-Git-Url: " . $cgi->self_url() . "\n\n";
4506
4507                foreach my $line (@{$co{'comment'}}) {
4508                        print "$line\n";
4509                }
4510                print "---\n\n";
4511        }
4512
4513        # write patch
4514        if ($format eq 'html') {
4515                git_difftree_body(\@difftree, $hash, $hash_parent || @{$co{'parents'}});
4516                print "<br/>\n";
4517
4518                git_patchset_body($fd, \@difftree, $hash, $hash_parent || @{$co{'parents'}});
4519                close $fd;
4520                print "</div>\n"; # class="page_body"
4521                git_footer_html();
4522
4523        } elsif ($format eq 'plain') {
4524                local $/ = undef;
4525                print <$fd>;
4526                close $fd
4527                        or print "Reading git-diff-tree failed\n";
4528        }
4529}
4530
4531sub git_commitdiff_plain {
4532        git_commitdiff('plain');
4533}
4534
4535sub git_history {
4536        if (!defined $hash_base) {
4537                $hash_base = git_get_head_hash($project);
4538        }
4539        if (!defined $page) {
4540                $page = 0;
4541        }
4542        my $ftype;
4543        my %co = parse_commit($hash_base);
4544        if (!%co) {
4545                die_error(undef, "Unknown commit object");
4546        }
4547
4548        my $refs = git_get_references();
4549        my $limit = sprintf("--max-count=%i", (100 * ($page+1)));
4550
4551        if (!defined $hash && defined $file_name) {
4552                $hash = git_get_hash_by_path($hash_base, $file_name);
4553        }
4554        if (defined $hash) {
4555                $ftype = git_get_type($hash);
4556        }
4557
4558        my @commitlist = parse_commits($hash_base, 101, (100 * $page), "--full-history", $file_name);
4559
4560        my $paging_nav = '';
4561        if ($page > 0) {
4562                $paging_nav .=
4563                        $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
4564                                               file_name=>$file_name)},
4565                                "first");
4566                $paging_nav .= " &sdot; " .
4567                        $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
4568                                               file_name=>$file_name, page=>$page-1),
4569                                 -accesskey => "p", -title => "Alt-p"}, "prev");
4570        } else {
4571                $paging_nav .= "first";
4572                $paging_nav .= " &sdot; prev";
4573        }
4574        if ($#commitlist >= 100) {
4575                $paging_nav .= " &sdot; " .
4576                        $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
4577                                               file_name=>$file_name, page=>$page+1),
4578                                 -accesskey => "n", -title => "Alt-n"}, "next");
4579        } else {
4580                $paging_nav .= " &sdot; next";
4581        }
4582        my $next_link = '';
4583        if ($#commitlist >= 100) {
4584                $next_link =
4585                        $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
4586                                               file_name=>$file_name, page=>$page+1),
4587                                 -accesskey => "n", -title => "Alt-n"}, "next");
4588        }
4589
4590        git_header_html();
4591        git_print_page_nav('history','', $hash_base,$co{'tree'},$hash_base, $paging_nav);
4592        git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
4593        git_print_page_path($file_name, $ftype, $hash_base);
4594
4595        git_history_body(\@commitlist, 0, 99,
4596                         $refs, $hash_base, $ftype, $next_link);
4597
4598        git_footer_html();
4599}
4600
4601sub git_search {
4602        my ($have_search) = gitweb_check_feature('search');
4603        if (!$have_search) {
4604                die_error('403 Permission denied', "Permission denied");
4605        }
4606        if (!defined $searchtext) {
4607                die_error(undef, "Text field empty");
4608        }
4609        if (!defined $hash) {
4610                $hash = git_get_head_hash($project);
4611        }
4612        my %co = parse_commit($hash);
4613        if (!%co) {
4614                die_error(undef, "Unknown commit object");
4615        }
4616        if (!defined $page) {
4617                $page = 0;
4618        }
4619
4620        $searchtype ||= 'commit';
4621        if ($searchtype eq 'pickaxe') {
4622                # pickaxe may take all resources of your box and run for several minutes
4623                # with every query - so decide by yourself how public you make this feature
4624                my ($have_pickaxe) = gitweb_check_feature('pickaxe');
4625                if (!$have_pickaxe) {
4626                        die_error('403 Permission denied', "Permission denied");
4627                }
4628        }
4629
4630        git_header_html();
4631
4632        if ($searchtype eq 'commit' or $searchtype eq 'author' or $searchtype eq 'committer') {
4633                my $greptype;
4634                if ($searchtype eq 'commit') {
4635                        $greptype = "--grep=";
4636                } elsif ($searchtype eq 'author') {
4637                        $greptype = "--author=";
4638                } elsif ($searchtype eq 'committer') {
4639                        $greptype = "--committer=";
4640                }
4641                $greptype .= $search_regexp;
4642                my @commitlist = parse_commits($hash, 101, (100 * $page), $greptype);
4643
4644                my $paging_nav = '';
4645                if ($page > 0) {
4646                        $paging_nav .=
4647                                $cgi->a({-href => href(action=>"search", hash=>$hash,
4648                                                       searchtext=>$searchtext, searchtype=>$searchtype)},
4649                                        "first");
4650                        $paging_nav .= " &sdot; " .
4651                                $cgi->a({-href => href(action=>"search", hash=>$hash,
4652                                                       searchtext=>$searchtext, searchtype=>$searchtype,
4653                                                       page=>$page-1),
4654                                         -accesskey => "p", -title => "Alt-p"}, "prev");
4655                } else {
4656                        $paging_nav .= "first";
4657                        $paging_nav .= " &sdot; prev";
4658                }
4659                if ($#commitlist >= 100) {
4660                        $paging_nav .= " &sdot; " .
4661                                $cgi->a({-href => href(action=>"search", hash=>$hash,
4662                                                       searchtext=>$searchtext, searchtype=>$searchtype,
4663                                                       page=>$page+1),
4664                                         -accesskey => "n", -title => "Alt-n"}, "next");
4665                } else {
4666                        $paging_nav .= " &sdot; next";
4667                }
4668                my $next_link = '';
4669                if ($#commitlist >= 100) {
4670                        $next_link =
4671                                $cgi->a({-href => href(action=>"search", hash=>$hash,
4672                                                       searchtext=>$searchtext, searchtype=>$searchtype,
4673                                                       page=>$page+1),
4674                                         -accesskey => "n", -title => "Alt-n"}, "next");
4675                }
4676
4677                git_print_page_nav('','', $hash,$co{'tree'},$hash, $paging_nav);
4678                git_print_header_div('commit', esc_html($co{'title'}), $hash);
4679                git_search_grep_body(\@commitlist, 0, 99, $next_link);
4680        }
4681
4682        if ($searchtype eq 'pickaxe') {
4683                git_print_page_nav('','', $hash,$co{'tree'},$hash);
4684                git_print_header_div('commit', esc_html($co{'title'}), $hash);
4685
4686                print "<table cellspacing=\"0\">\n";
4687                my $alternate = 1;
4688                $/ = "\n";
4689                my $git_command = git_cmd_str();
4690                open my $fd, "-|", "$git_command rev-list $hash | " .
4691                        "$git_command diff-tree -r --stdin -S\'$searchtext\'";
4692                undef %co;
4693                my @files;
4694                while (my $line = <$fd>) {
4695                        if (%co && $line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)\t(.*)$/) {
4696                                my %set;
4697                                $set{'file'} = $6;
4698                                $set{'from_id'} = $3;
4699                                $set{'to_id'} = $4;
4700                                $set{'id'} = $set{'to_id'};
4701                                if ($set{'id'} =~ m/0{40}/) {
4702                                        $set{'id'} = $set{'from_id'};
4703                                }
4704                                if ($set{'id'} =~ m/0{40}/) {
4705                                        next;
4706                                }
4707                                push @files, \%set;
4708                        } elsif ($line =~ m/^([0-9a-fA-F]{40})$/){
4709                                if (%co) {
4710                                        if ($alternate) {
4711                                                print "<tr class=\"dark\">\n";
4712                                        } else {
4713                                                print "<tr class=\"light\">\n";
4714                                        }
4715                                        $alternate ^= 1;
4716                                        print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
4717                                              "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 5)) . "</i></td>\n" .
4718                                              "<td>" .
4719                                              $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}),
4720                                                      -class => "list subject"},
4721                                                      esc_html(chop_str($co{'title'}, 50)) . "<br/>");
4722                                        while (my $setref = shift @files) {
4723                                                my %set = %$setref;
4724                                                print $cgi->a({-href => href(action=>"blob", hash_base=>$co{'id'},
4725                                                                             hash=>$set{'id'}, file_name=>$set{'file'}),
4726                                                              -class => "list"},
4727                                                              "<span class=\"match\">" . esc_path($set{'file'}) . "</span>") .
4728                                                      "<br/>\n";
4729                                        }
4730                                        print "</td>\n" .
4731                                              "<td class=\"link\">" .
4732                                              $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})}, "commit") .
4733                                              " | " .
4734                                              $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$co{'id'})}, "tree");
4735                                        print "</td>\n" .
4736                                              "</tr>\n";
4737                                }
4738                                %co = parse_commit($1);
4739                        }
4740                }
4741                close $fd;
4742
4743                print "</table>\n";
4744        }
4745        git_footer_html();
4746}
4747
4748sub git_search_help {
4749        git_header_html();
4750        git_print_page_nav('','', $hash,$hash,$hash);
4751        print <<EOT;
4752<dl>
4753<dt><b>commit</b></dt>
4754<dd>The commit messages and authorship information will be scanned for the given string.</dd>
4755<dt><b>author</b></dt>
4756<dd>Name and e-mail of the change author and date of birth of the patch will be scanned for the given string.</dd>
4757<dt><b>committer</b></dt>
4758<dd>Name and e-mail of the committer and date of commit will be scanned for the given string.</dd>
4759EOT
4760        my ($have_pickaxe) = gitweb_check_feature('pickaxe');
4761        if ($have_pickaxe) {
4762                print <<EOT;
4763<dt><b>pickaxe</b></dt>
4764<dd>All commits that caused the string to appear or disappear from any file (changes that
4765added, removed or "modified" the string) will be listed. This search can take a while and
4766takes a lot of strain on the server, so please use it wisely.</dd>
4767EOT
4768        }
4769        print "</dl>\n";
4770        git_footer_html();
4771}
4772
4773sub git_shortlog {
4774        my $head = git_get_head_hash($project);
4775        if (!defined $hash) {
4776                $hash = $head;
4777        }
4778        if (!defined $page) {
4779                $page = 0;
4780        }
4781        my $refs = git_get_references();
4782
4783        my @commitlist = parse_commits($hash, 101, (100 * $page));
4784
4785        my $paging_nav = format_paging_nav('shortlog', $hash, $head, $page, (100 * ($page+1)));
4786        my $next_link = '';
4787        if ($#commitlist >= 100) {
4788                $next_link =
4789                        $cgi->a({-href => href(action=>"shortlog", hash=>$hash, page=>$page+1),
4790                                 -accesskey => "n", -title => "Alt-n"}, "next");
4791        }
4792
4793        git_header_html();
4794        git_print_page_nav('shortlog','', $hash,$hash,$hash, $paging_nav);
4795        git_print_header_div('summary', $project);
4796
4797        git_shortlog_body(\@commitlist, 0, 99, $refs, $next_link);
4798
4799        git_footer_html();
4800}
4801
4802## ......................................................................
4803## feeds (RSS, Atom; OPML)
4804
4805sub git_feed {
4806        my $format = shift || 'atom';
4807        my ($have_blame) = gitweb_check_feature('blame');
4808
4809        # Atom: http://www.atomenabled.org/developers/syndication/
4810        # RSS:  http://www.notestips.com/80256B3A007F2692/1/NAMO5P9UPQ
4811        if ($format ne 'rss' && $format ne 'atom') {
4812                die_error(undef, "Unknown web feed format");
4813        }
4814
4815        # log/feed of current (HEAD) branch, log of given branch, history of file/directory
4816        my $head = $hash || 'HEAD';
4817        my @commitlist = parse_commits($head, 150);
4818
4819        my %latest_commit;
4820        my %latest_date;
4821        my $content_type = "application/$format+xml";
4822        if (defined $cgi->http('HTTP_ACCEPT') &&
4823                 $cgi->Accept('text/xml') > $cgi->Accept($content_type)) {
4824                # browser (feed reader) prefers text/xml
4825                $content_type = 'text/xml';
4826        }
4827        if (defined($commitlist[0])) {
4828                %latest_commit = %{$commitlist[0]};
4829                %latest_date   = parse_date($latest_commit{'author_epoch'});
4830                print $cgi->header(
4831                        -type => $content_type,
4832                        -charset => 'utf-8',
4833                        -last_modified => $latest_date{'rfc2822'});
4834        } else {
4835                print $cgi->header(
4836                        -type => $content_type,
4837                        -charset => 'utf-8');
4838        }
4839
4840        # Optimization: skip generating the body if client asks only
4841        # for Last-Modified date.
4842        return if ($cgi->request_method() eq 'HEAD');
4843
4844        # header variables
4845        my $title = "$site_name - $project/$action";
4846        my $feed_type = 'log';
4847        if (defined $hash) {
4848                $title .= " - '$hash'";
4849                $feed_type = 'branch log';
4850                if (defined $file_name) {
4851                        $title .= " :: $file_name";
4852                        $feed_type = 'history';
4853                }
4854        } elsif (defined $file_name) {
4855                $title .= " - $file_name";
4856                $feed_type = 'history';
4857        }
4858        $title .= " $feed_type";
4859        my $descr = git_get_project_description($project);
4860        if (defined $descr) {
4861                $descr = esc_html($descr);
4862        } else {
4863                $descr = "$project " .
4864                         ($format eq 'rss' ? 'RSS' : 'Atom') .
4865                         " feed";
4866        }
4867        my $owner = git_get_project_owner($project);
4868        $owner = esc_html($owner);
4869
4870        #header
4871        my $alt_url;
4872        if (defined $file_name) {
4873                $alt_url = href(-full=>1, action=>"history", hash=>$hash, file_name=>$file_name);
4874        } elsif (defined $hash) {
4875                $alt_url = href(-full=>1, action=>"log", hash=>$hash);
4876        } else {
4877                $alt_url = href(-full=>1, action=>"summary");
4878        }
4879        print qq!<?xml version="1.0" encoding="utf-8"?>\n!;
4880        if ($format eq 'rss') {
4881                print <<XML;
4882<rss version="2.0" xmlns:content="http://purl.org/rss/1.0/modules/content/">
4883<channel>
4884XML
4885                print "<title>$title</title>\n" .
4886                      "<link>$alt_url</link>\n" .
4887                      "<description>$descr</description>\n" .
4888                      "<language>en</language>\n";
4889        } elsif ($format eq 'atom') {
4890                print <<XML;
4891<feed xmlns="http://www.w3.org/2005/Atom">
4892XML
4893                print "<title>$title</title>\n" .
4894                      "<subtitle>$descr</subtitle>\n" .
4895                      '<link rel="alternate" type="text/html" href="' .
4896                      $alt_url . '" />' . "\n" .
4897                      '<link rel="self" type="' . $content_type . '" href="' .
4898                      $cgi->self_url() . '" />' . "\n" .
4899                      "<id>" . href(-full=>1) . "</id>\n" .
4900                      # use project owner for feed author
4901                      "<author><name>$owner</name></author>\n";
4902                if (defined $favicon) {
4903                        print "<icon>" . esc_url($favicon) . "</icon>\n";
4904                }
4905                if (defined $logo_url) {
4906                        # not twice as wide as tall: 72 x 27 pixels
4907                        print "<logo>" . esc_url($logo) . "</logo>\n";
4908                }
4909                if (! %latest_date) {
4910                        # dummy date to keep the feed valid until commits trickle in:
4911                        print "<updated>1970-01-01T00:00:00Z</updated>\n";
4912                } else {
4913                        print "<updated>$latest_date{'iso-8601'}</updated>\n";
4914                }
4915        }
4916
4917        # contents
4918        for (my $i = 0; $i <= $#commitlist; $i++) {
4919                my %co = %{$commitlist[$i]};
4920                my $commit = $co{'id'};
4921                # we read 150, we always show 30 and the ones more recent than 48 hours
4922                if (($i >= 20) && ((time - $co{'author_epoch'}) > 48*60*60)) {
4923                        last;
4924                }
4925                my %cd = parse_date($co{'author_epoch'});
4926
4927                # get list of changed files
4928                open my $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4929                        $co{'parent'}, $co{'id'}, "--", (defined $file_name ? $file_name : ())
4930                        or next;
4931                my @difftree = map { chomp; $_ } <$fd>;
4932                close $fd
4933                        or next;
4934
4935                # print element (entry, item)
4936                my $co_url = href(-full=>1, action=>"commit", hash=>$commit);
4937                if ($format eq 'rss') {
4938                        print "<item>\n" .
4939                              "<title>" . esc_html($co{'title'}) . "</title>\n" .
4940                              "<author>" . esc_html($co{'author'}) . "</author>\n" .
4941                              "<pubDate>$cd{'rfc2822'}</pubDate>\n" .
4942                              "<guid isPermaLink=\"true\">$co_url</guid>\n" .
4943                              "<link>$co_url</link>\n" .
4944                              "<description>" . esc_html($co{'title'}) . "</description>\n" .
4945                              "<content:encoded>" .
4946                              "<![CDATA[\n";
4947                } elsif ($format eq 'atom') {
4948                        print "<entry>\n" .
4949                              "<title type=\"html\">" . esc_html($co{'title'}) . "</title>\n" .
4950                              "<updated>$cd{'iso-8601'}</updated>\n" .
4951                              "<author>\n" .
4952                              "  <name>" . esc_html($co{'author_name'}) . "</name>\n";
4953                        if ($co{'author_email'}) {
4954                                print "  <email>" . esc_html($co{'author_email'}) . "</email>\n";
4955                        }
4956                        print "</author>\n" .
4957                              # use committer for contributor
4958                              "<contributor>\n" .
4959                              "  <name>" . esc_html($co{'committer_name'}) . "</name>\n";
4960                        if ($co{'committer_email'}) {
4961                                print "  <email>" . esc_html($co{'committer_email'}) . "</email>\n";
4962                        }
4963                        print "</contributor>\n" .
4964                              "<published>$cd{'iso-8601'}</published>\n" .
4965                              "<link rel=\"alternate\" type=\"text/html\" href=\"$co_url\" />\n" .
4966                              "<id>$co_url</id>\n" .
4967                              "<content type=\"xhtml\" xml:base=\"" . esc_url($my_url) . "\">\n" .
4968                              "<div xmlns=\"http://www.w3.org/1999/xhtml\">\n";
4969                }
4970                my $comment = $co{'comment'};
4971                print "<pre>\n";
4972                foreach my $line (@$comment) {
4973                        $line = esc_html($line);
4974                        print "$line\n";
4975                }
4976                print "</pre><ul>\n";
4977                foreach my $difftree_line (@difftree) {
4978                        my %difftree = parse_difftree_raw_line($difftree_line);
4979                        next if !$difftree{'from_id'};
4980
4981                        my $file = $difftree{'file'} || $difftree{'to_file'};
4982
4983                        print "<li>" .
4984                              "[" .
4985                              $cgi->a({-href => href(-full=>1, action=>"blobdiff",
4986                                                     hash=>$difftree{'to_id'}, hash_parent=>$difftree{'from_id'},
4987                                                     hash_base=>$co{'id'}, hash_parent_base=>$co{'parent'},
4988                                                     file_name=>$file, file_parent=>$difftree{'from_file'}),
4989                                      -title => "diff"}, 'D');
4990                        if ($have_blame) {
4991                                print $cgi->a({-href => href(-full=>1, action=>"blame",
4992                                                             file_name=>$file, hash_base=>$commit),
4993                                              -title => "blame"}, 'B');
4994                        }
4995                        # if this is not a feed of a file history
4996                        if (!defined $file_name || $file_name ne $file) {
4997                                print $cgi->a({-href => href(-full=>1, action=>"history",
4998                                                             file_name=>$file, hash=>$commit),
4999                                              -title => "history"}, 'H');
5000                        }
5001                        $file = esc_path($file);
5002                        print "] ".
5003                              "$file</li>\n";
5004                }
5005                if ($format eq 'rss') {
5006                        print "</ul>]]>\n" .
5007                              "</content:encoded>\n" .
5008                              "</item>\n";
5009                } elsif ($format eq 'atom') {
5010                        print "</ul>\n</div>\n" .
5011                              "</content>\n" .
5012                              "</entry>\n";
5013                }
5014        }
5015
5016        # end of feed
5017        if ($format eq 'rss') {
5018                print "</channel>\n</rss>\n";
5019        }       elsif ($format eq 'atom') {
5020                print "</feed>\n";
5021        }
5022}
5023
5024sub git_rss {
5025        git_feed('rss');
5026}
5027
5028sub git_atom {
5029        git_feed('atom');
5030}
5031
5032sub git_opml {
5033        my @list = git_get_projects_list();
5034
5035        print $cgi->header(-type => 'text/xml', -charset => 'utf-8');
5036        print <<XML;
5037<?xml version="1.0" encoding="utf-8"?>
5038<opml version="1.0">
5039<head>
5040  <title>$site_name OPML Export</title>
5041</head>
5042<body>
5043<outline text="git RSS feeds">
5044XML
5045
5046        foreach my $pr (@list) {
5047                my %proj = %$pr;
5048                my $head = git_get_head_hash($proj{'path'});
5049                if (!defined $head) {
5050                        next;
5051                }
5052                $git_dir = "$projectroot/$proj{'path'}";
5053                my %co = parse_commit($head);
5054                if (!%co) {
5055                        next;
5056                }
5057
5058                my $path = esc_html(chop_str($proj{'path'}, 25, 5));
5059                my $rss  = "$my_url?p=$proj{'path'};a=rss";
5060                my $html = "$my_url?p=$proj{'path'};a=summary";
5061                print "<outline type=\"rss\" text=\"$path\" title=\"$path\" xmlUrl=\"$rss\" htmlUrl=\"$html\"/>\n";
5062        }
5063        print <<XML;
5064</outline>
5065</body>
5066</opml>
5067XML
5068}