gitweb / gitweb.perlon commit gitweb: Show submodule entries in the 'tree' view (01ac1e3)
   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# the width (in characters) of the projects list "Description" column
  75our $projects_list_description_width = 25;
  76
  77# default order of projects list
  78# valid values are none, project, descr, owner, and age
  79our $default_projects_order = "project";
  80
  81# show repository only if this file exists
  82# (only effective if this variable evaluates to true)
  83our $export_ok = "++GITWEB_EXPORT_OK++";
  84
  85# only allow viewing of repositories also shown on the overview page
  86our $strict_export = "++GITWEB_STRICT_EXPORT++";
  87
  88# list of git base URLs used for URL to where fetch project from,
  89# i.e. full URL is "$git_base_url/$project"
  90our @git_base_url_list = grep { $_ ne '' } ("++GITWEB_BASE_URL++");
  91
  92# default blob_plain mimetype and default charset for text/plain blob
  93our $default_blob_plain_mimetype = 'text/plain';
  94our $default_text_plain_charset  = undef;
  95
  96# file to use for guessing MIME types before trying /etc/mime.types
  97# (relative to the current git repository)
  98our $mimetypes_file = undef;
  99
 100# assume this charset if line contains non-UTF-8 characters;
 101# it should be valid encoding (see Encoding::Supported(3pm) for list),
 102# for which encoding all byte sequences are valid, for example
 103# 'iso-8859-1' aka 'latin1' (it is decoded without checking, so it
 104# could be even 'utf-8' for the old behavior)
 105our $fallback_encoding = 'latin1';
 106
 107# rename detection options for git-diff and git-diff-tree
 108# - default is '-M', with the cost proportional to
 109#   (number of removed files) * (number of new files).
 110# - more costly is '-C' (which implies '-M'), with the cost proportional to
 111#   (number of changed files + number of removed files) * (number of new files)
 112# - even more costly is '-C', '--find-copies-harder' with cost
 113#   (number of files in the original tree) * (number of new files)
 114# - one might want to include '-B' option, e.g. '-B', '-M'
 115our @diff_opts = ('-M'); # taken from git_commit
 116
 117# information about snapshot formats that gitweb is capable of serving
 118our %known_snapshot_formats = (
 119        # name => {
 120        #       'display' => display name,
 121        #       'type' => mime type,
 122        #       'suffix' => filename suffix,
 123        #       'format' => --format for git-archive,
 124        #       'compressor' => [compressor command and arguments]
 125        #                       (array reference, optional)}
 126        #
 127        'tgz' => {
 128                'display' => 'tar.gz',
 129                'type' => 'application/x-gzip',
 130                'suffix' => '.tar.gz',
 131                'format' => 'tar',
 132                'compressor' => ['gzip']},
 133
 134        'tbz2' => {
 135                'display' => 'tar.bz2',
 136                'type' => 'application/x-bzip2',
 137                'suffix' => '.tar.bz2',
 138                'format' => 'tar',
 139                'compressor' => ['bzip2']},
 140
 141        'zip' => {
 142                'display' => 'zip',
 143                'type' => 'application/x-zip',
 144                'suffix' => '.zip',
 145                'format' => 'zip'},
 146);
 147
 148# Aliases so we understand old gitweb.snapshot values in repository
 149# configuration.
 150our %known_snapshot_format_aliases = (
 151        'gzip'  => 'tgz',
 152        'bzip2' => 'tbz2',
 153
 154        # backward compatibility: legacy gitweb config support
 155        'x-gzip' => undef, 'gz' => undef,
 156        'x-bzip2' => undef, 'bz2' => undef,
 157        'x-zip' => undef, '' => undef,
 158);
 159
 160# You define site-wide feature defaults here; override them with
 161# $GITWEB_CONFIG as necessary.
 162our %feature = (
 163        # feature => {
 164        #       'sub' => feature-sub (subroutine),
 165        #       'override' => allow-override (boolean),
 166        #       'default' => [ default options...] (array reference)}
 167        #
 168        # if feature is overridable (it means that allow-override has true value),
 169        # then feature-sub will be called with default options as parameters;
 170        # return value of feature-sub indicates if to enable specified feature
 171        #
 172        # if there is no 'sub' key (no feature-sub), then feature cannot be
 173        # overriden
 174        #
 175        # use gitweb_check_feature(<feature>) to check if <feature> is enabled
 176
 177        # Enable the 'blame' blob view, showing the last commit that modified
 178        # each line in the file. This can be very CPU-intensive.
 179
 180        # To enable system wide have in $GITWEB_CONFIG
 181        # $feature{'blame'}{'default'} = [1];
 182        # To have project specific config enable override in $GITWEB_CONFIG
 183        # $feature{'blame'}{'override'} = 1;
 184        # and in project config gitweb.blame = 0|1;
 185        'blame' => {
 186                'sub' => \&feature_blame,
 187                'override' => 0,
 188                'default' => [0]},
 189
 190        # Enable the 'snapshot' link, providing a compressed archive of any
 191        # tree. This can potentially generate high traffic if you have large
 192        # project.
 193
 194        # Value is a list of formats defined in %known_snapshot_formats that
 195        # you wish to offer.
 196        # To disable system wide have in $GITWEB_CONFIG
 197        # $feature{'snapshot'}{'default'} = [];
 198        # To have project specific config enable override in $GITWEB_CONFIG
 199        # $feature{'snapshot'}{'override'} = 1;
 200        # and in project config, a comma-separated list of formats or "none"
 201        # to disable.  Example: gitweb.snapshot = tbz2,zip;
 202        'snapshot' => {
 203                'sub' => \&feature_snapshot,
 204                'override' => 0,
 205                'default' => ['tgz']},
 206
 207        # Enable text search, which will list the commits which match author,
 208        # committer or commit text to a given string.  Enabled by default.
 209        # Project specific override is not supported.
 210        'search' => {
 211                'override' => 0,
 212                'default' => [1]},
 213
 214        # Enable grep search, which will list the files in currently selected
 215        # tree containing the given string. Enabled by default. This can be
 216        # potentially CPU-intensive, of course.
 217
 218        # To enable system wide have in $GITWEB_CONFIG
 219        # $feature{'grep'}{'default'} = [1];
 220        # To have project specific config enable override in $GITWEB_CONFIG
 221        # $feature{'grep'}{'override'} = 1;
 222        # and in project config gitweb.grep = 0|1;
 223        'grep' => {
 224                'override' => 0,
 225                'default' => [1]},
 226
 227        # Enable the pickaxe search, which will list the commits that modified
 228        # a given string in a file. This can be practical and quite faster
 229        # alternative to 'blame', but still potentially CPU-intensive.
 230
 231        # To enable system wide have in $GITWEB_CONFIG
 232        # $feature{'pickaxe'}{'default'} = [1];
 233        # To have project specific config enable override in $GITWEB_CONFIG
 234        # $feature{'pickaxe'}{'override'} = 1;
 235        # and in project config gitweb.pickaxe = 0|1;
 236        'pickaxe' => {
 237                'sub' => \&feature_pickaxe,
 238                'override' => 0,
 239                'default' => [1]},
 240
 241        # Make gitweb use an alternative format of the URLs which can be
 242        # more readable and natural-looking: project name is embedded
 243        # directly in the path and the query string contains other
 244        # auxiliary information. All gitweb installations recognize
 245        # URL in either format; this configures in which formats gitweb
 246        # generates links.
 247
 248        # To enable system wide have in $GITWEB_CONFIG
 249        # $feature{'pathinfo'}{'default'} = [1];
 250        # Project specific override is not supported.
 251
 252        # Note that you will need to change the default location of CSS,
 253        # favicon, logo and possibly other files to an absolute URL. Also,
 254        # if gitweb.cgi serves as your indexfile, you will need to force
 255        # $my_uri to contain the script name in your $GITWEB_CONFIG.
 256        'pathinfo' => {
 257                'override' => 0,
 258                'default' => [0]},
 259
 260        # Make gitweb consider projects in project root subdirectories
 261        # to be forks of existing projects. Given project $projname.git,
 262        # projects matching $projname/*.git will not be shown in the main
 263        # projects list, instead a '+' mark will be added to $projname
 264        # there and a 'forks' view will be enabled for the project, listing
 265        # all the forks. If project list is taken from a file, forks have
 266        # to be listed after the main project.
 267
 268        # To enable system wide have in $GITWEB_CONFIG
 269        # $feature{'forks'}{'default'} = [1];
 270        # Project specific override is not supported.
 271        'forks' => {
 272                'override' => 0,
 273                'default' => [0]},
 274);
 275
 276sub gitweb_check_feature {
 277        my ($name) = @_;
 278        return unless exists $feature{$name};
 279        my ($sub, $override, @defaults) = (
 280                $feature{$name}{'sub'},
 281                $feature{$name}{'override'},
 282                @{$feature{$name}{'default'}});
 283        if (!$override) { return @defaults; }
 284        if (!defined $sub) {
 285                warn "feature $name is not overrideable";
 286                return @defaults;
 287        }
 288        return $sub->(@defaults);
 289}
 290
 291sub feature_blame {
 292        my ($val) = git_get_project_config('blame', '--bool');
 293
 294        if ($val eq 'true') {
 295                return 1;
 296        } elsif ($val eq 'false') {
 297                return 0;
 298        }
 299
 300        return $_[0];
 301}
 302
 303sub feature_snapshot {
 304        my (@fmts) = @_;
 305
 306        my ($val) = git_get_project_config('snapshot');
 307
 308        if ($val) {
 309                @fmts = ($val eq 'none' ? () : split /\s*[,\s]\s*/, $val);
 310        }
 311
 312        return @fmts;
 313}
 314
 315sub feature_grep {
 316        my ($val) = git_get_project_config('grep', '--bool');
 317
 318        if ($val eq 'true') {
 319                return (1);
 320        } elsif ($val eq 'false') {
 321                return (0);
 322        }
 323
 324        return ($_[0]);
 325}
 326
 327sub feature_pickaxe {
 328        my ($val) = git_get_project_config('pickaxe', '--bool');
 329
 330        if ($val eq 'true') {
 331                return (1);
 332        } elsif ($val eq 'false') {
 333                return (0);
 334        }
 335
 336        return ($_[0]);
 337}
 338
 339# checking HEAD file with -e is fragile if the repository was
 340# initialized long time ago (i.e. symlink HEAD) and was pack-ref'ed
 341# and then pruned.
 342sub check_head_link {
 343        my ($dir) = @_;
 344        my $headfile = "$dir/HEAD";
 345        return ((-e $headfile) ||
 346                (-l $headfile && readlink($headfile) =~ /^refs\/heads\//));
 347}
 348
 349sub check_export_ok {
 350        my ($dir) = @_;
 351        return (check_head_link($dir) &&
 352                (!$export_ok || -e "$dir/$export_ok"));
 353}
 354
 355# process alternate names for backward compatibility
 356# filter out unsupported (unknown) snapshot formats
 357sub filter_snapshot_fmts {
 358        my @fmts = @_;
 359
 360        @fmts = map {
 361                exists $known_snapshot_format_aliases{$_} ?
 362                       $known_snapshot_format_aliases{$_} : $_} @fmts;
 363        @fmts = grep(exists $known_snapshot_formats{$_}, @fmts);
 364
 365}
 366
 367our $GITWEB_CONFIG = $ENV{'GITWEB_CONFIG'} || "++GITWEB_CONFIG++";
 368do $GITWEB_CONFIG if -e $GITWEB_CONFIG;
 369
 370# version of the core git binary
 371our $git_version = qx($GIT --version) =~ m/git version (.*)$/ ? $1 : "unknown";
 372
 373$projects_list ||= $projectroot;
 374
 375# ======================================================================
 376# input validation and dispatch
 377our $action = $cgi->param('a');
 378if (defined $action) {
 379        if ($action =~ m/[^0-9a-zA-Z\.\-_]/) {
 380                die_error(undef, "Invalid action parameter");
 381        }
 382}
 383
 384# parameters which are pathnames
 385our $project = $cgi->param('p');
 386if (defined $project) {
 387        if (!validate_pathname($project) ||
 388            !(-d "$projectroot/$project") ||
 389            !check_head_link("$projectroot/$project") ||
 390            ($export_ok && !(-e "$projectroot/$project/$export_ok")) ||
 391            ($strict_export && !project_in_list($project))) {
 392                undef $project;
 393                die_error(undef, "No such project");
 394        }
 395}
 396
 397our $file_name = $cgi->param('f');
 398if (defined $file_name) {
 399        if (!validate_pathname($file_name)) {
 400                die_error(undef, "Invalid file parameter");
 401        }
 402}
 403
 404our $file_parent = $cgi->param('fp');
 405if (defined $file_parent) {
 406        if (!validate_pathname($file_parent)) {
 407                die_error(undef, "Invalid file parent parameter");
 408        }
 409}
 410
 411# parameters which are refnames
 412our $hash = $cgi->param('h');
 413if (defined $hash) {
 414        if (!validate_refname($hash)) {
 415                die_error(undef, "Invalid hash parameter");
 416        }
 417}
 418
 419our $hash_parent = $cgi->param('hp');
 420if (defined $hash_parent) {
 421        if (!validate_refname($hash_parent)) {
 422                die_error(undef, "Invalid hash parent parameter");
 423        }
 424}
 425
 426our $hash_base = $cgi->param('hb');
 427if (defined $hash_base) {
 428        if (!validate_refname($hash_base)) {
 429                die_error(undef, "Invalid hash base parameter");
 430        }
 431}
 432
 433my %allowed_options = (
 434        "--no-merges" => [ qw(rss atom log shortlog history) ],
 435);
 436
 437our @extra_options = $cgi->param('opt');
 438if (defined @extra_options) {
 439        foreach(@extra_options)
 440        {
 441                if (not grep(/^$_$/, keys %allowed_options)) {
 442                        die_error(undef, "Invalid option parameter");
 443                }
 444                if (not grep(/^$action$/, @{$allowed_options{$_}})) {
 445                        die_error(undef, "Invalid option parameter for this action");
 446                }
 447        }
 448}
 449
 450our $hash_parent_base = $cgi->param('hpb');
 451if (defined $hash_parent_base) {
 452        if (!validate_refname($hash_parent_base)) {
 453                die_error(undef, "Invalid hash parent base parameter");
 454        }
 455}
 456
 457# other parameters
 458our $page = $cgi->param('pg');
 459if (defined $page) {
 460        if ($page =~ m/[^0-9]/) {
 461                die_error(undef, "Invalid page parameter");
 462        }
 463}
 464
 465our $searchtype = $cgi->param('st');
 466if (defined $searchtype) {
 467        if ($searchtype =~ m/[^a-z]/) {
 468                die_error(undef, "Invalid searchtype parameter");
 469        }
 470}
 471
 472our $searchtext = $cgi->param('s');
 473our $search_regexp;
 474if (defined $searchtext) {
 475        if ($searchtype ne 'grep' and $searchtype ne 'pickaxe' and $searchtext =~ m/[^a-zA-Z0-9_\.\/\-\+\:\@ ]/) {
 476                die_error(undef, "Invalid search parameter");
 477        }
 478        if (length($searchtext) < 2) {
 479                die_error(undef, "At least two characters are required for search parameter");
 480        }
 481        $search_regexp = quotemeta $searchtext;
 482}
 483
 484# now read PATH_INFO and use it as alternative to parameters
 485sub evaluate_path_info {
 486        return if defined $project;
 487        my $path_info = $ENV{"PATH_INFO"};
 488        return if !$path_info;
 489        $path_info =~ s,^/+,,;
 490        return if !$path_info;
 491        # find which part of PATH_INFO is project
 492        $project = $path_info;
 493        $project =~ s,/+$,,;
 494        while ($project && !check_head_link("$projectroot/$project")) {
 495                $project =~ s,/*[^/]*$,,;
 496        }
 497        # validate project
 498        $project = validate_pathname($project);
 499        if (!$project ||
 500            ($export_ok && !-e "$projectroot/$project/$export_ok") ||
 501            ($strict_export && !project_in_list($project))) {
 502                undef $project;
 503                return;
 504        }
 505        # do not change any parameters if an action is given using the query string
 506        return if $action;
 507        $path_info =~ s,^$project/*,,;
 508        my ($refname, $pathname) = split(/:/, $path_info, 2);
 509        if (defined $pathname) {
 510                # we got "project.git/branch:filename" or "project.git/branch:dir/"
 511                # we could use git_get_type(branch:pathname), but it needs $git_dir
 512                $pathname =~ s,^/+,,;
 513                if (!$pathname || substr($pathname, -1) eq "/") {
 514                        $action  ||= "tree";
 515                        $pathname =~ s,/$,,;
 516                } else {
 517                        $action  ||= "blob_plain";
 518                }
 519                $hash_base ||= validate_refname($refname);
 520                $file_name ||= validate_pathname($pathname);
 521        } elsif (defined $refname) {
 522                # we got "project.git/branch"
 523                $action ||= "shortlog";
 524                $hash   ||= validate_refname($refname);
 525        }
 526}
 527evaluate_path_info();
 528
 529# path to the current git repository
 530our $git_dir;
 531$git_dir = "$projectroot/$project" if $project;
 532
 533# dispatch
 534my %actions = (
 535        "blame" => \&git_blame2,
 536        "blobdiff" => \&git_blobdiff,
 537        "blobdiff_plain" => \&git_blobdiff_plain,
 538        "blob" => \&git_blob,
 539        "blob_plain" => \&git_blob_plain,
 540        "commitdiff" => \&git_commitdiff,
 541        "commitdiff_plain" => \&git_commitdiff_plain,
 542        "commit" => \&git_commit,
 543        "forks" => \&git_forks,
 544        "heads" => \&git_heads,
 545        "history" => \&git_history,
 546        "log" => \&git_log,
 547        "rss" => \&git_rss,
 548        "atom" => \&git_atom,
 549        "search" => \&git_search,
 550        "search_help" => \&git_search_help,
 551        "shortlog" => \&git_shortlog,
 552        "summary" => \&git_summary,
 553        "tag" => \&git_tag,
 554        "tags" => \&git_tags,
 555        "tree" => \&git_tree,
 556        "snapshot" => \&git_snapshot,
 557        "object" => \&git_object,
 558        # those below don't need $project
 559        "opml" => \&git_opml,
 560        "project_list" => \&git_project_list,
 561        "project_index" => \&git_project_index,
 562);
 563
 564if (!defined $action) {
 565        if (defined $hash) {
 566                $action = git_get_type($hash);
 567        } elsif (defined $hash_base && defined $file_name) {
 568                $action = git_get_type("$hash_base:$file_name");
 569        } elsif (defined $project) {
 570                $action = 'summary';
 571        } else {
 572                $action = 'project_list';
 573        }
 574}
 575if (!defined($actions{$action})) {
 576        die_error(undef, "Unknown action");
 577}
 578if ($action !~ m/^(opml|project_list|project_index)$/ &&
 579    !$project) {
 580        die_error(undef, "Project needed");
 581}
 582$actions{$action}->();
 583exit;
 584
 585## ======================================================================
 586## action links
 587
 588sub href(%) {
 589        my %params = @_;
 590        # default is to use -absolute url() i.e. $my_uri
 591        my $href = $params{-full} ? $my_url : $my_uri;
 592
 593        # XXX: Warning: If you touch this, check the search form for updating,
 594        # too.
 595
 596        my @mapping = (
 597                project => "p",
 598                action => "a",
 599                file_name => "f",
 600                file_parent => "fp",
 601                extra_options => "opt",
 602                hash => "h",
 603                hash_parent => "hp",
 604                hash_base => "hb",
 605                hash_parent_base => "hpb",
 606                page => "pg",
 607                order => "o",
 608                searchtext => "s",
 609                searchtype => "st",
 610                snapshot_format => "sf",
 611        );
 612        my %mapping = @mapping;
 613
 614        $params{'project'} = $project unless exists $params{'project'};
 615
 616        my ($use_pathinfo) = gitweb_check_feature('pathinfo');
 617        if ($use_pathinfo) {
 618                # use PATH_INFO for project name
 619                $href .= "/$params{'project'}" if defined $params{'project'};
 620                delete $params{'project'};
 621
 622                # Summary just uses the project path URL
 623                if (defined $params{'action'} && $params{'action'} eq 'summary') {
 624                        delete $params{'action'};
 625                }
 626        }
 627
 628        # now encode the parameters explicitly
 629        my @result = ();
 630        for (my $i = 0; $i < @mapping; $i += 2) {
 631                my ($name, $symbol) = ($mapping[$i], $mapping[$i+1]);
 632                if (defined $params{$name}) {
 633                        push @result, $symbol . "=" . esc_param($params{$name});
 634                }
 635        }
 636        $href .= "?" . join(';', @result) if scalar @result;
 637
 638        return $href;
 639}
 640
 641
 642## ======================================================================
 643## validation, quoting/unquoting and escaping
 644
 645sub validate_pathname {
 646        my $input = shift || return undef;
 647
 648        # no '.' or '..' as elements of path, i.e. no '.' nor '..'
 649        # at the beginning, at the end, and between slashes.
 650        # also this catches doubled slashes
 651        if ($input =~ m!(^|/)(|\.|\.\.)(/|$)!) {
 652                return undef;
 653        }
 654        # no null characters
 655        if ($input =~ m!\0!) {
 656                return undef;
 657        }
 658        return $input;
 659}
 660
 661sub validate_refname {
 662        my $input = shift || return undef;
 663
 664        # textual hashes are O.K.
 665        if ($input =~ m/^[0-9a-fA-F]{40}$/) {
 666                return $input;
 667        }
 668        # it must be correct pathname
 669        $input = validate_pathname($input)
 670                or return undef;
 671        # restrictions on ref name according to git-check-ref-format
 672        if ($input =~ m!(/\.|\.\.|[\000-\040\177 ~^:?*\[]|/$)!) {
 673                return undef;
 674        }
 675        return $input;
 676}
 677
 678# decode sequences of octets in utf8 into Perl's internal form,
 679# which is utf-8 with utf8 flag set if needed.  gitweb writes out
 680# in utf-8 thanks to "binmode STDOUT, ':utf8'" at beginning
 681sub to_utf8 {
 682        my $str = shift;
 683        my $res;
 684        eval { $res = decode_utf8($str, Encode::FB_CROAK); };
 685        if (defined $res) {
 686                return $res;
 687        } else {
 688                return decode($fallback_encoding, $str, Encode::FB_DEFAULT);
 689        }
 690}
 691
 692# quote unsafe chars, but keep the slash, even when it's not
 693# correct, but quoted slashes look too horrible in bookmarks
 694sub esc_param {
 695        my $str = shift;
 696        $str =~ s/([^A-Za-z0-9\-_.~()\/:@])/sprintf("%%%02X", ord($1))/eg;
 697        $str =~ s/\+/%2B/g;
 698        $str =~ s/ /\+/g;
 699        return $str;
 700}
 701
 702# quote unsafe chars in whole URL, so some charactrs cannot be quoted
 703sub esc_url {
 704        my $str = shift;
 705        $str =~ s/([^A-Za-z0-9\-_.~();\/;?:@&=])/sprintf("%%%02X", ord($1))/eg;
 706        $str =~ s/\+/%2B/g;
 707        $str =~ s/ /\+/g;
 708        return $str;
 709}
 710
 711# replace invalid utf8 character with SUBSTITUTION sequence
 712sub esc_html ($;%) {
 713        my $str = shift;
 714        my %opts = @_;
 715
 716        $str = to_utf8($str);
 717        $str = $cgi->escapeHTML($str);
 718        if ($opts{'-nbsp'}) {
 719                $str =~ s/ /&nbsp;/g;
 720        }
 721        $str =~ s|([[:cntrl:]])|(($1 ne "\t") ? quot_cec($1) : $1)|eg;
 722        return $str;
 723}
 724
 725# quote control characters and escape filename to HTML
 726sub esc_path {
 727        my $str = shift;
 728        my %opts = @_;
 729
 730        $str = to_utf8($str);
 731        $str = $cgi->escapeHTML($str);
 732        if ($opts{'-nbsp'}) {
 733                $str =~ s/ /&nbsp;/g;
 734        }
 735        $str =~ s|([[:cntrl:]])|quot_cec($1)|eg;
 736        return $str;
 737}
 738
 739# Make control characters "printable", using character escape codes (CEC)
 740sub quot_cec {
 741        my $cntrl = shift;
 742        my %es = ( # character escape codes, aka escape sequences
 743                   "\t" => '\t',   # tab            (HT)
 744                   "\n" => '\n',   # line feed      (LF)
 745                   "\r" => '\r',   # carrige return (CR)
 746                   "\f" => '\f',   # form feed      (FF)
 747                   "\b" => '\b',   # backspace      (BS)
 748                   "\a" => '\a',   # alarm (bell)   (BEL)
 749                   "\e" => '\e',   # escape         (ESC)
 750                   "\013" => '\v', # vertical tab   (VT)
 751                   "\000" => '\0', # nul character  (NUL)
 752                   );
 753        my $chr = ( (exists $es{$cntrl})
 754                    ? $es{$cntrl}
 755                    : sprintf('\%03o', ord($cntrl)) );
 756        return "<span class=\"cntrl\">$chr</span>";
 757}
 758
 759# Alternatively use unicode control pictures codepoints,
 760# Unicode "printable representation" (PR)
 761sub quot_upr {
 762        my $cntrl = shift;
 763        my $chr = sprintf('&#%04d;', 0x2400+ord($cntrl));
 764        return "<span class=\"cntrl\">$chr</span>";
 765}
 766
 767# git may return quoted and escaped filenames
 768sub unquote {
 769        my $str = shift;
 770
 771        sub unq {
 772                my $seq = shift;
 773                my %es = ( # character escape codes, aka escape sequences
 774                        't' => "\t",   # tab            (HT, TAB)
 775                        'n' => "\n",   # newline        (NL)
 776                        'r' => "\r",   # return         (CR)
 777                        'f' => "\f",   # form feed      (FF)
 778                        'b' => "\b",   # backspace      (BS)
 779                        'a' => "\a",   # alarm (bell)   (BEL)
 780                        'e' => "\e",   # escape         (ESC)
 781                        'v' => "\013", # vertical tab   (VT)
 782                );
 783
 784                if ($seq =~ m/^[0-7]{1,3}$/) {
 785                        # octal char sequence
 786                        return chr(oct($seq));
 787                } elsif (exists $es{$seq}) {
 788                        # C escape sequence, aka character escape code
 789                        return $es{$seq}
 790                }
 791                # quoted ordinary character
 792                return $seq;
 793        }
 794
 795        if ($str =~ m/^"(.*)"$/) {
 796                # needs unquoting
 797                $str = $1;
 798                $str =~ s/\\([^0-7]|[0-7]{1,3})/unq($1)/eg;
 799        }
 800        return $str;
 801}
 802
 803# escape tabs (convert tabs to spaces)
 804sub untabify {
 805        my $line = shift;
 806
 807        while ((my $pos = index($line, "\t")) != -1) {
 808                if (my $count = (8 - ($pos % 8))) {
 809                        my $spaces = ' ' x $count;
 810                        $line =~ s/\t/$spaces/;
 811                }
 812        }
 813
 814        return $line;
 815}
 816
 817sub project_in_list {
 818        my $project = shift;
 819        my @list = git_get_projects_list();
 820        return @list && scalar(grep { $_->{'path'} eq $project } @list);
 821}
 822
 823## ----------------------------------------------------------------------
 824## HTML aware string manipulation
 825
 826sub chop_str {
 827        my $str = shift;
 828        my $len = shift;
 829        my $add_len = shift || 10;
 830
 831        # allow only $len chars, but don't cut a word if it would fit in $add_len
 832        # if it doesn't fit, cut it if it's still longer than the dots we would add
 833        $str =~ m/^(.{0,$len}[^ \/\-_:\.@]{0,$add_len})(.*)/;
 834        my $body = $1;
 835        my $tail = $2;
 836        if (length($tail) > 4) {
 837                $tail = " ...";
 838                $body =~ s/&[^;]*$//; # remove chopped character entities
 839        }
 840        return "$body$tail";
 841}
 842
 843## ----------------------------------------------------------------------
 844## functions returning short strings
 845
 846# CSS class for given age value (in seconds)
 847sub age_class {
 848        my $age = shift;
 849
 850        if (!defined $age) {
 851                return "noage";
 852        } elsif ($age < 60*60*2) {
 853                return "age0";
 854        } elsif ($age < 60*60*24*2) {
 855                return "age1";
 856        } else {
 857                return "age2";
 858        }
 859}
 860
 861# convert age in seconds to "nn units ago" string
 862sub age_string {
 863        my $age = shift;
 864        my $age_str;
 865
 866        if ($age > 60*60*24*365*2) {
 867                $age_str = (int $age/60/60/24/365);
 868                $age_str .= " years ago";
 869        } elsif ($age > 60*60*24*(365/12)*2) {
 870                $age_str = int $age/60/60/24/(365/12);
 871                $age_str .= " months ago";
 872        } elsif ($age > 60*60*24*7*2) {
 873                $age_str = int $age/60/60/24/7;
 874                $age_str .= " weeks ago";
 875        } elsif ($age > 60*60*24*2) {
 876                $age_str = int $age/60/60/24;
 877                $age_str .= " days ago";
 878        } elsif ($age > 60*60*2) {
 879                $age_str = int $age/60/60;
 880                $age_str .= " hours ago";
 881        } elsif ($age > 60*2) {
 882                $age_str = int $age/60;
 883                $age_str .= " min ago";
 884        } elsif ($age > 2) {
 885                $age_str = int $age;
 886                $age_str .= " sec ago";
 887        } else {
 888                $age_str .= " right now";
 889        }
 890        return $age_str;
 891}
 892
 893use constant {
 894        S_IFINVALID => 0030000,
 895        S_IFGITLINK => 0160000,
 896};
 897
 898# submodule/subproject, a commit object reference
 899sub S_ISGITLINK($) {
 900        my $mode = shift;
 901
 902        return (($mode & S_IFMT) == S_IFGITLINK)
 903}
 904
 905# convert file mode in octal to symbolic file mode string
 906sub mode_str {
 907        my $mode = oct shift;
 908
 909        if (S_ISGITLINK($mode)) {
 910                return 'm---------';
 911        } elsif (S_ISDIR($mode & S_IFMT)) {
 912                return 'drwxr-xr-x';
 913        } elsif (S_ISLNK($mode)) {
 914                return 'lrwxrwxrwx';
 915        } elsif (S_ISREG($mode)) {
 916                # git cares only about the executable bit
 917                if ($mode & S_IXUSR) {
 918                        return '-rwxr-xr-x';
 919                } else {
 920                        return '-rw-r--r--';
 921                };
 922        } else {
 923                return '----------';
 924        }
 925}
 926
 927# convert file mode in octal to file type string
 928sub file_type {
 929        my $mode = shift;
 930
 931        if ($mode !~ m/^[0-7]+$/) {
 932                return $mode;
 933        } else {
 934                $mode = oct $mode;
 935        }
 936
 937        if (S_ISGITLINK($mode)) {
 938                return "submodule";
 939        } elsif (S_ISDIR($mode & S_IFMT)) {
 940                return "directory";
 941        } elsif (S_ISLNK($mode)) {
 942                return "symlink";
 943        } elsif (S_ISREG($mode)) {
 944                return "file";
 945        } else {
 946                return "unknown";
 947        }
 948}
 949
 950# convert file mode in octal to file type description string
 951sub file_type_long {
 952        my $mode = shift;
 953
 954        if ($mode !~ m/^[0-7]+$/) {
 955                return $mode;
 956        } else {
 957                $mode = oct $mode;
 958        }
 959
 960        if (S_ISGITLINK($mode)) {
 961                return "submodule";
 962        } elsif (S_ISDIR($mode & S_IFMT)) {
 963                return "directory";
 964        } elsif (S_ISLNK($mode)) {
 965                return "symlink";
 966        } elsif (S_ISREG($mode)) {
 967                if ($mode & S_IXUSR) {
 968                        return "executable";
 969                } else {
 970                        return "file";
 971                };
 972        } else {
 973                return "unknown";
 974        }
 975}
 976
 977
 978## ----------------------------------------------------------------------
 979## functions returning short HTML fragments, or transforming HTML fragments
 980## which don't belong to other sections
 981
 982# format line of commit message.
 983sub format_log_line_html {
 984        my $line = shift;
 985
 986        $line = esc_html($line, -nbsp=>1);
 987        if ($line =~ m/([0-9a-fA-F]{8,40})/) {
 988                my $hash_text = $1;
 989                my $link =
 990                        $cgi->a({-href => href(action=>"object", hash=>$hash_text),
 991                                -class => "text"}, $hash_text);
 992                $line =~ s/$hash_text/$link/;
 993        }
 994        return $line;
 995}
 996
 997# format marker of refs pointing to given object
 998sub format_ref_marker {
 999        my ($refs, $id) = @_;
1000        my $markers = '';
1001
1002        if (defined $refs->{$id}) {
1003                foreach my $ref (@{$refs->{$id}}) {
1004                        my ($type, $name) = qw();
1005                        # e.g. tags/v2.6.11 or heads/next
1006                        if ($ref =~ m!^(.*?)s?/(.*)$!) {
1007                                $type = $1;
1008                                $name = $2;
1009                        } else {
1010                                $type = "ref";
1011                                $name = $ref;
1012                        }
1013
1014                        $markers .= " <span class=\"$type\" title=\"$ref\">" .
1015                                    esc_html($name) . "</span>";
1016                }
1017        }
1018
1019        if ($markers) {
1020                return ' <span class="refs">'. $markers . '</span>';
1021        } else {
1022                return "";
1023        }
1024}
1025
1026# format, perhaps shortened and with markers, title line
1027sub format_subject_html {
1028        my ($long, $short, $href, $extra) = @_;
1029        $extra = '' unless defined($extra);
1030
1031        if (length($short) < length($long)) {
1032                return $cgi->a({-href => $href, -class => "list subject",
1033                                -title => to_utf8($long)},
1034                       esc_html($short) . $extra);
1035        } else {
1036                return $cgi->a({-href => $href, -class => "list subject"},
1037                       esc_html($long)  . $extra);
1038        }
1039}
1040
1041# format git diff header line, i.e. "diff --(git|combined|cc) ..."
1042sub format_git_diff_header_line {
1043        my $line = shift;
1044        my $diffinfo = shift;
1045        my ($from, $to) = @_;
1046
1047        if ($diffinfo->{'nparents'}) {
1048                # combined diff
1049                $line =~ s!^(diff (.*?) )"?.*$!$1!;
1050                if ($to->{'href'}) {
1051                        $line .= $cgi->a({-href => $to->{'href'}, -class => "path"},
1052                                         esc_path($to->{'file'}));
1053                } else { # file was deleted (no href)
1054                        $line .= esc_path($to->{'file'});
1055                }
1056        } else {
1057                # "ordinary" diff
1058                $line =~ s!^(diff (.*?) )"?a/.*$!$1!;
1059                if ($from->{'href'}) {
1060                        $line .= $cgi->a({-href => $from->{'href'}, -class => "path"},
1061                                         'a/' . esc_path($from->{'file'}));
1062                } else { # file was added (no href)
1063                        $line .= 'a/' . esc_path($from->{'file'});
1064                }
1065                $line .= ' ';
1066                if ($to->{'href'}) {
1067                        $line .= $cgi->a({-href => $to->{'href'}, -class => "path"},
1068                                         'b/' . esc_path($to->{'file'}));
1069                } else { # file was deleted
1070                        $line .= 'b/' . esc_path($to->{'file'});
1071                }
1072        }
1073
1074        return "<div class=\"diff header\">$line</div>\n";
1075}
1076
1077# format extended diff header line, before patch itself
1078sub format_extended_diff_header_line {
1079        my $line = shift;
1080        my $diffinfo = shift;
1081        my ($from, $to) = @_;
1082
1083        # match <path>
1084        if ($line =~ s!^((copy|rename) from ).*$!$1! && $from->{'href'}) {
1085                $line .= $cgi->a({-href=>$from->{'href'}, -class=>"path"},
1086                                       esc_path($from->{'file'}));
1087        }
1088        if ($line =~ s!^((copy|rename) to ).*$!$1! && $to->{'href'}) {
1089                $line .= $cgi->a({-href=>$to->{'href'}, -class=>"path"},
1090                                 esc_path($to->{'file'}));
1091        }
1092        # match single <mode>
1093        if ($line =~ m/\s(\d{6})$/) {
1094                $line .= '<span class="info"> (' .
1095                         file_type_long($1) .
1096                         ')</span>';
1097        }
1098        # match <hash>
1099        if ($line =~ m/^index [0-9a-fA-F]{40},[0-9a-fA-F]{40}/) {
1100                # can match only for combined diff
1101                $line = 'index ';
1102                for (my $i = 0; $i < $diffinfo->{'nparents'}; $i++) {
1103                        if ($from->{'href'}[$i]) {
1104                                $line .= $cgi->a({-href=>$from->{'href'}[$i],
1105                                                  -class=>"hash"},
1106                                                 substr($diffinfo->{'from_id'}[$i],0,7));
1107                        } else {
1108                                $line .= '0' x 7;
1109                        }
1110                        # separator
1111                        $line .= ',' if ($i < $diffinfo->{'nparents'} - 1);
1112                }
1113                $line .= '..';
1114                if ($to->{'href'}) {
1115                        $line .= $cgi->a({-href=>$to->{'href'}, -class=>"hash"},
1116                                         substr($diffinfo->{'to_id'},0,7));
1117                } else {
1118                        $line .= '0' x 7;
1119                }
1120
1121        } elsif ($line =~ m/^index [0-9a-fA-F]{40}..[0-9a-fA-F]{40}/) {
1122                # can match only for ordinary diff
1123                my ($from_link, $to_link);
1124                if ($from->{'href'}) {
1125                        $from_link = $cgi->a({-href=>$from->{'href'}, -class=>"hash"},
1126                                             substr($diffinfo->{'from_id'},0,7));
1127                } else {
1128                        $from_link = '0' x 7;
1129                }
1130                if ($to->{'href'}) {
1131                        $to_link = $cgi->a({-href=>$to->{'href'}, -class=>"hash"},
1132                                           substr($diffinfo->{'to_id'},0,7));
1133                } else {
1134                        $to_link = '0' x 7;
1135                }
1136                my ($from_id, $to_id) = ($diffinfo->{'from_id'}, $diffinfo->{'to_id'});
1137                $line =~ s!$from_id\.\.$to_id!$from_link..$to_link!;
1138        }
1139
1140        return $line . "<br/>\n";
1141}
1142
1143# format from-file/to-file diff header
1144sub format_diff_from_to_header {
1145        my ($from_line, $to_line, $diffinfo, $from, $to, @parents) = @_;
1146        my $line;
1147        my $result = '';
1148
1149        $line = $from_line;
1150        #assert($line =~ m/^---/) if DEBUG;
1151        # no extra formatting for "^--- /dev/null"
1152        if (! $diffinfo->{'nparents'}) {
1153                # ordinary (single parent) diff
1154                if ($line =~ m!^--- "?a/!) {
1155                        if ($from->{'href'}) {
1156                                $line = '--- a/' .
1157                                        $cgi->a({-href=>$from->{'href'}, -class=>"path"},
1158                                                esc_path($from->{'file'}));
1159                        } else {
1160                                $line = '--- a/' .
1161                                        esc_path($from->{'file'});
1162                        }
1163                }
1164                $result .= qq!<div class="diff from_file">$line</div>\n!;
1165
1166        } else {
1167                # combined diff (merge commit)
1168                for (my $i = 0; $i < $diffinfo->{'nparents'}; $i++) {
1169                        if ($from->{'href'}[$i]) {
1170                                $line = '--- ' .
1171                                        $cgi->a({-href=>href(action=>"blobdiff",
1172                                                             hash_parent=>$diffinfo->{'from_id'}[$i],
1173                                                             hash_parent_base=>$parents[$i],
1174                                                             file_parent=>$from->{'file'}[$i],
1175                                                             hash=>$diffinfo->{'to_id'},
1176                                                             hash_base=>$hash,
1177                                                             file_name=>$to->{'file'}),
1178                                                 -class=>"path",
1179                                                 -title=>"diff" . ($i+1)},
1180                                                $i+1) .
1181                                        '/' .
1182                                        $cgi->a({-href=>$from->{'href'}[$i], -class=>"path"},
1183                                                esc_path($from->{'file'}[$i]));
1184                        } else {
1185                                $line = '--- /dev/null';
1186                        }
1187                        $result .= qq!<div class="diff from_file">$line</div>\n!;
1188                }
1189        }
1190
1191        $line = $to_line;
1192        #assert($line =~ m/^\+\+\+/) if DEBUG;
1193        # no extra formatting for "^+++ /dev/null"
1194        if ($line =~ m!^\+\+\+ "?b/!) {
1195                if ($to->{'href'}) {
1196                        $line = '+++ b/' .
1197                                $cgi->a({-href=>$to->{'href'}, -class=>"path"},
1198                                        esc_path($to->{'file'}));
1199                } else {
1200                        $line = '+++ b/' .
1201                                esc_path($to->{'file'});
1202                }
1203        }
1204        $result .= qq!<div class="diff to_file">$line</div>\n!;
1205
1206        return $result;
1207}
1208
1209# create note for patch simplified by combined diff
1210sub format_diff_cc_simplified {
1211        my ($diffinfo, @parents) = @_;
1212        my $result = '';
1213
1214        $result .= "<div class=\"diff header\">" .
1215                   "diff --cc ";
1216        if (!is_deleted($diffinfo)) {
1217                $result .= $cgi->a({-href => href(action=>"blob",
1218                                                  hash_base=>$hash,
1219                                                  hash=>$diffinfo->{'to_id'},
1220                                                  file_name=>$diffinfo->{'to_file'}),
1221                                    -class => "path"},
1222                                   esc_path($diffinfo->{'to_file'}));
1223        } else {
1224                $result .= esc_path($diffinfo->{'to_file'});
1225        }
1226        $result .= "</div>\n" . # class="diff header"
1227                   "<div class=\"diff nodifferences\">" .
1228                   "Simple merge" .
1229                   "</div>\n"; # class="diff nodifferences"
1230
1231        return $result;
1232}
1233
1234# format patch (diff) line (not to be used for diff headers)
1235sub format_diff_line {
1236        my $line = shift;
1237        my ($from, $to) = @_;
1238        my $diff_class = "";
1239
1240        chomp $line;
1241
1242        if ($from && $to && ref($from->{'href'}) eq "ARRAY") {
1243                # combined diff
1244                my $prefix = substr($line, 0, scalar @{$from->{'href'}});
1245                if ($line =~ m/^\@{3}/) {
1246                        $diff_class = " chunk_header";
1247                } elsif ($line =~ m/^\\/) {
1248                        $diff_class = " incomplete";
1249                } elsif ($prefix =~ tr/+/+/) {
1250                        $diff_class = " add";
1251                } elsif ($prefix =~ tr/-/-/) {
1252                        $diff_class = " rem";
1253                }
1254        } else {
1255                # assume ordinary diff
1256                my $char = substr($line, 0, 1);
1257                if ($char eq '+') {
1258                        $diff_class = " add";
1259                } elsif ($char eq '-') {
1260                        $diff_class = " rem";
1261                } elsif ($char eq '@') {
1262                        $diff_class = " chunk_header";
1263                } elsif ($char eq "\\") {
1264                        $diff_class = " incomplete";
1265                }
1266        }
1267        $line = untabify($line);
1268        if ($from && $to && $line =~ m/^\@{2} /) {
1269                my ($from_text, $from_start, $from_lines, $to_text, $to_start, $to_lines, $section) =
1270                        $line =~ m/^\@{2} (-(\d+)(?:,(\d+))?) (\+(\d+)(?:,(\d+))?) \@{2}(.*)$/;
1271
1272                $from_lines = 0 unless defined $from_lines;
1273                $to_lines   = 0 unless defined $to_lines;
1274
1275                if ($from->{'href'}) {
1276                        $from_text = $cgi->a({-href=>"$from->{'href'}#l$from_start",
1277                                             -class=>"list"}, $from_text);
1278                }
1279                if ($to->{'href'}) {
1280                        $to_text   = $cgi->a({-href=>"$to->{'href'}#l$to_start",
1281                                             -class=>"list"}, $to_text);
1282                }
1283                $line = "<span class=\"chunk_info\">@@ $from_text $to_text @@</span>" .
1284                        "<span class=\"section\">" . esc_html($section, -nbsp=>1) . "</span>";
1285                return "<div class=\"diff$diff_class\">$line</div>\n";
1286        } elsif ($from && $to && $line =~ m/^\@{3}/) {
1287                my ($prefix, $ranges, $section) = $line =~ m/^(\@+) (.*?) \@+(.*)$/;
1288                my (@from_text, @from_start, @from_nlines, $to_text, $to_start, $to_nlines);
1289
1290                @from_text = split(' ', $ranges);
1291                for (my $i = 0; $i < @from_text; ++$i) {
1292                        ($from_start[$i], $from_nlines[$i]) =
1293                                (split(',', substr($from_text[$i], 1)), 0);
1294                }
1295
1296                $to_text   = pop @from_text;
1297                $to_start  = pop @from_start;
1298                $to_nlines = pop @from_nlines;
1299
1300                $line = "<span class=\"chunk_info\">$prefix ";
1301                for (my $i = 0; $i < @from_text; ++$i) {
1302                        if ($from->{'href'}[$i]) {
1303                                $line .= $cgi->a({-href=>"$from->{'href'}[$i]#l$from_start[$i]",
1304                                                  -class=>"list"}, $from_text[$i]);
1305                        } else {
1306                                $line .= $from_text[$i];
1307                        }
1308                        $line .= " ";
1309                }
1310                if ($to->{'href'}) {
1311                        $line .= $cgi->a({-href=>"$to->{'href'}#l$to_start",
1312                                          -class=>"list"}, $to_text);
1313                } else {
1314                        $line .= $to_text;
1315                }
1316                $line .= " $prefix</span>" .
1317                         "<span class=\"section\">" . esc_html($section, -nbsp=>1) . "</span>";
1318                return "<div class=\"diff$diff_class\">$line</div>\n";
1319        }
1320        return "<div class=\"diff$diff_class\">" . esc_html($line, -nbsp=>1) . "</div>\n";
1321}
1322
1323# Generates undef or something like "_snapshot_" or "snapshot (_tbz2_ _zip_)",
1324# linked.  Pass the hash of the tree/commit to snapshot.
1325sub format_snapshot_links {
1326        my ($hash) = @_;
1327        my @snapshot_fmts = gitweb_check_feature('snapshot');
1328        @snapshot_fmts = filter_snapshot_fmts(@snapshot_fmts);
1329        my $num_fmts = @snapshot_fmts;
1330        if ($num_fmts > 1) {
1331                # A parenthesized list of links bearing format names.
1332                # e.g. "snapshot (_tar.gz_ _zip_)"
1333                return "snapshot (" . join(' ', map
1334                        $cgi->a({
1335                                -href => href(
1336                                        action=>"snapshot",
1337                                        hash=>$hash,
1338                                        snapshot_format=>$_
1339                                )
1340                        }, $known_snapshot_formats{$_}{'display'})
1341                , @snapshot_fmts) . ")";
1342        } elsif ($num_fmts == 1) {
1343                # A single "snapshot" link whose tooltip bears the format name.
1344                # i.e. "_snapshot_"
1345                my ($fmt) = @snapshot_fmts;
1346                return
1347                        $cgi->a({
1348                                -href => href(
1349                                        action=>"snapshot",
1350                                        hash=>$hash,
1351                                        snapshot_format=>$fmt
1352                                ),
1353                                -title => "in format: $known_snapshot_formats{$fmt}{'display'}"
1354                        }, "snapshot");
1355        } else { # $num_fmts == 0
1356                return undef;
1357        }
1358}
1359
1360## ----------------------------------------------------------------------
1361## git utility subroutines, invoking git commands
1362
1363# returns path to the core git executable and the --git-dir parameter as list
1364sub git_cmd {
1365        return $GIT, '--git-dir='.$git_dir;
1366}
1367
1368# returns path to the core git executable and the --git-dir parameter as string
1369sub git_cmd_str {
1370        return join(' ', git_cmd());
1371}
1372
1373# get HEAD ref of given project as hash
1374sub git_get_head_hash {
1375        my $project = shift;
1376        my $o_git_dir = $git_dir;
1377        my $retval = undef;
1378        $git_dir = "$projectroot/$project";
1379        if (open my $fd, "-|", git_cmd(), "rev-parse", "--verify", "HEAD") {
1380                my $head = <$fd>;
1381                close $fd;
1382                if (defined $head && $head =~ /^([0-9a-fA-F]{40})$/) {
1383                        $retval = $1;
1384                }
1385        }
1386        if (defined $o_git_dir) {
1387                $git_dir = $o_git_dir;
1388        }
1389        return $retval;
1390}
1391
1392# get type of given object
1393sub git_get_type {
1394        my $hash = shift;
1395
1396        open my $fd, "-|", git_cmd(), "cat-file", '-t', $hash or return;
1397        my $type = <$fd>;
1398        close $fd or return;
1399        chomp $type;
1400        return $type;
1401}
1402
1403sub git_get_project_config {
1404        my ($key, $type) = @_;
1405
1406        return unless ($key);
1407        $key =~ s/^gitweb\.//;
1408        return if ($key =~ m/\W/);
1409
1410        my @x = (git_cmd(), 'config');
1411        if (defined $type) { push @x, $type; }
1412        push @x, "--get";
1413        push @x, "gitweb.$key";
1414        my $val = qx(@x);
1415        chomp $val;
1416        return ($val);
1417}
1418
1419# get hash of given path at given ref
1420sub git_get_hash_by_path {
1421        my $base = shift;
1422        my $path = shift || return undef;
1423        my $type = shift;
1424
1425        $path =~ s,/+$,,;
1426
1427        open my $fd, "-|", git_cmd(), "ls-tree", $base, "--", $path
1428                or die_error(undef, "Open git-ls-tree failed");
1429        my $line = <$fd>;
1430        close $fd or return undef;
1431
1432        if (!defined $line) {
1433                # there is no tree or hash given by $path at $base
1434                return undef;
1435        }
1436
1437        #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
1438        $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t/;
1439        if (defined $type && $type ne $2) {
1440                # type doesn't match
1441                return undef;
1442        }
1443        return $3;
1444}
1445
1446# get path of entry with given hash at given tree-ish (ref)
1447# used to get 'from' filename for combined diff (merge commit) for renames
1448sub git_get_path_by_hash {
1449        my $base = shift || return;
1450        my $hash = shift || return;
1451
1452        local $/ = "\0";
1453
1454        open my $fd, "-|", git_cmd(), "ls-tree", '-r', '-t', '-z', $base
1455                or return undef;
1456        while (my $line = <$fd>) {
1457                chomp $line;
1458
1459                #'040000 tree 595596a6a9117ddba9fe379b6b012b558bac8423  gitweb'
1460                #'100644 blob e02e90f0429be0d2a69b76571101f20b8f75530f  gitweb/README'
1461                if ($line =~ m/(?:[0-9]+) (?:.+) $hash\t(.+)$/) {
1462                        close $fd;
1463                        return $1;
1464                }
1465        }
1466        close $fd;
1467        return undef;
1468}
1469
1470## ......................................................................
1471## git utility functions, directly accessing git repository
1472
1473sub git_get_project_description {
1474        my $path = shift;
1475
1476        open my $fd, "$projectroot/$path/description" or return undef;
1477        my $descr = <$fd>;
1478        close $fd;
1479        if (defined $descr) {
1480                chomp $descr;
1481        }
1482        return $descr;
1483}
1484
1485sub git_get_project_url_list {
1486        my $path = shift;
1487
1488        open my $fd, "$projectroot/$path/cloneurl" or return;
1489        my @git_project_url_list = map { chomp; $_ } <$fd>;
1490        close $fd;
1491
1492        return wantarray ? @git_project_url_list : \@git_project_url_list;
1493}
1494
1495sub git_get_projects_list {
1496        my ($filter) = @_;
1497        my @list;
1498
1499        $filter ||= '';
1500        $filter =~ s/\.git$//;
1501
1502        my ($check_forks) = gitweb_check_feature('forks');
1503
1504        if (-d $projects_list) {
1505                # search in directory
1506                my $dir = $projects_list . ($filter ? "/$filter" : '');
1507                # remove the trailing "/"
1508                $dir =~ s!/+$!!;
1509                my $pfxlen = length("$dir");
1510
1511                File::Find::find({
1512                        follow_fast => 1, # follow symbolic links
1513                        dangling_symlinks => 0, # ignore dangling symlinks, silently
1514                        wanted => sub {
1515                                # skip project-list toplevel, if we get it.
1516                                return if (m!^[/.]$!);
1517                                # only directories can be git repositories
1518                                return unless (-d $_);
1519
1520                                my $subdir = substr($File::Find::name, $pfxlen + 1);
1521                                # we check related file in $projectroot
1522                                if ($check_forks and $subdir =~ m#/.#) {
1523                                        $File::Find::prune = 1;
1524                                } elsif (check_export_ok("$projectroot/$filter/$subdir")) {
1525                                        push @list, { path => ($filter ? "$filter/" : '') . $subdir };
1526                                        $File::Find::prune = 1;
1527                                }
1528                        },
1529                }, "$dir");
1530
1531        } elsif (-f $projects_list) {
1532                # read from file(url-encoded):
1533                # 'git%2Fgit.git Linus+Torvalds'
1534                # 'libs%2Fklibc%2Fklibc.git H.+Peter+Anvin'
1535                # 'linux%2Fhotplug%2Fudev.git Greg+Kroah-Hartman'
1536                my %paths;
1537                open my ($fd), $projects_list or return;
1538        PROJECT:
1539                while (my $line = <$fd>) {
1540                        chomp $line;
1541                        my ($path, $owner) = split ' ', $line;
1542                        $path = unescape($path);
1543                        $owner = unescape($owner);
1544                        if (!defined $path) {
1545                                next;
1546                        }
1547                        if ($filter ne '') {
1548                                # looking for forks;
1549                                my $pfx = substr($path, 0, length($filter));
1550                                if ($pfx ne $filter) {
1551                                        next PROJECT;
1552                                }
1553                                my $sfx = substr($path, length($filter));
1554                                if ($sfx !~ /^\/.*\.git$/) {
1555                                        next PROJECT;
1556                                }
1557                        } elsif ($check_forks) {
1558                        PATH:
1559                                foreach my $filter (keys %paths) {
1560                                        # looking for forks;
1561                                        my $pfx = substr($path, 0, length($filter));
1562                                        if ($pfx ne $filter) {
1563                                                next PATH;
1564                                        }
1565                                        my $sfx = substr($path, length($filter));
1566                                        if ($sfx !~ /^\/.*\.git$/) {
1567                                                next PATH;
1568                                        }
1569                                        # is a fork, don't include it in
1570                                        # the list
1571                                        next PROJECT;
1572                                }
1573                        }
1574                        if (check_export_ok("$projectroot/$path")) {
1575                                my $pr = {
1576                                        path => $path,
1577                                        owner => to_utf8($owner),
1578                                };
1579                                push @list, $pr;
1580                                (my $forks_path = $path) =~ s/\.git$//;
1581                                $paths{$forks_path}++;
1582                        }
1583                }
1584                close $fd;
1585        }
1586        return @list;
1587}
1588
1589our $gitweb_project_owner = undef;
1590sub git_get_project_list_from_file {
1591
1592        return if (defined $gitweb_project_owner);
1593
1594        $gitweb_project_owner = {};
1595        # read from file (url-encoded):
1596        # 'git%2Fgit.git Linus+Torvalds'
1597        # 'libs%2Fklibc%2Fklibc.git H.+Peter+Anvin'
1598        # 'linux%2Fhotplug%2Fudev.git Greg+Kroah-Hartman'
1599        if (-f $projects_list) {
1600                open (my $fd , $projects_list);
1601                while (my $line = <$fd>) {
1602                        chomp $line;
1603                        my ($pr, $ow) = split ' ', $line;
1604                        $pr = unescape($pr);
1605                        $ow = unescape($ow);
1606                        $gitweb_project_owner->{$pr} = to_utf8($ow);
1607                }
1608                close $fd;
1609        }
1610}
1611
1612sub git_get_project_owner {
1613        my $project = shift;
1614        my $owner;
1615
1616        return undef unless $project;
1617
1618        if (!defined $gitweb_project_owner) {
1619                git_get_project_list_from_file();
1620        }
1621
1622        if (exists $gitweb_project_owner->{$project}) {
1623                $owner = $gitweb_project_owner->{$project};
1624        }
1625        if (!defined $owner) {
1626                $owner = get_file_owner("$projectroot/$project");
1627        }
1628
1629        return $owner;
1630}
1631
1632sub git_get_last_activity {
1633        my ($path) = @_;
1634        my $fd;
1635
1636        $git_dir = "$projectroot/$path";
1637        open($fd, "-|", git_cmd(), 'for-each-ref',
1638             '--format=%(committer)',
1639             '--sort=-committerdate',
1640             '--count=1',
1641             'refs/heads') or return;
1642        my $most_recent = <$fd>;
1643        close $fd or return;
1644        if (defined $most_recent &&
1645            $most_recent =~ / (\d+) [-+][01]\d\d\d$/) {
1646                my $timestamp = $1;
1647                my $age = time - $timestamp;
1648                return ($age, age_string($age));
1649        }
1650        return (undef, undef);
1651}
1652
1653sub git_get_references {
1654        my $type = shift || "";
1655        my %refs;
1656        # 5dc01c595e6c6ec9ccda4f6f69c131c0dd945f8c refs/tags/v2.6.11
1657        # c39ae07f393806ccf406ef966e9a15afc43cc36a refs/tags/v2.6.11^{}
1658        open my $fd, "-|", git_cmd(), "show-ref", "--dereference",
1659                ($type ? ("--", "refs/$type") : ()) # use -- <pattern> if $type
1660                or return;
1661
1662        while (my $line = <$fd>) {
1663                chomp $line;
1664                if ($line =~ m!^([0-9a-fA-F]{40})\srefs/($type/?[^^]+)!) {
1665                        if (defined $refs{$1}) {
1666                                push @{$refs{$1}}, $2;
1667                        } else {
1668                                $refs{$1} = [ $2 ];
1669                        }
1670                }
1671        }
1672        close $fd or return;
1673        return \%refs;
1674}
1675
1676sub git_get_rev_name_tags {
1677        my $hash = shift || return undef;
1678
1679        open my $fd, "-|", git_cmd(), "name-rev", "--tags", $hash
1680                or return;
1681        my $name_rev = <$fd>;
1682        close $fd;
1683
1684        if ($name_rev =~ m|^$hash tags/(.*)$|) {
1685                return $1;
1686        } else {
1687                # catches also '$hash undefined' output
1688                return undef;
1689        }
1690}
1691
1692## ----------------------------------------------------------------------
1693## parse to hash functions
1694
1695sub parse_date {
1696        my $epoch = shift;
1697        my $tz = shift || "-0000";
1698
1699        my %date;
1700        my @months = ("Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec");
1701        my @days = ("Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat");
1702        my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($epoch);
1703        $date{'hour'} = $hour;
1704        $date{'minute'} = $min;
1705        $date{'mday'} = $mday;
1706        $date{'day'} = $days[$wday];
1707        $date{'month'} = $months[$mon];
1708        $date{'rfc2822'}   = sprintf "%s, %d %s %4d %02d:%02d:%02d +0000",
1709                             $days[$wday], $mday, $months[$mon], 1900+$year, $hour ,$min, $sec;
1710        $date{'mday-time'} = sprintf "%d %s %02d:%02d",
1711                             $mday, $months[$mon], $hour ,$min;
1712        $date{'iso-8601'}  = sprintf "%04d-%02d-%02dT%02d:%02d:%02dZ",
1713                             1900+$year, $mon, $mday, $hour ,$min, $sec;
1714
1715        $tz =~ m/^([+\-][0-9][0-9])([0-9][0-9])$/;
1716        my $local = $epoch + ((int $1 + ($2/60)) * 3600);
1717        ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($local);
1718        $date{'hour_local'} = $hour;
1719        $date{'minute_local'} = $min;
1720        $date{'tz_local'} = $tz;
1721        $date{'iso-tz'} = sprintf("%04d-%02d-%02d %02d:%02d:%02d %s",
1722                                  1900+$year, $mon+1, $mday,
1723                                  $hour, $min, $sec, $tz);
1724        return %date;
1725}
1726
1727sub parse_tag {
1728        my $tag_id = shift;
1729        my %tag;
1730        my @comment;
1731
1732        open my $fd, "-|", git_cmd(), "cat-file", "tag", $tag_id or return;
1733        $tag{'id'} = $tag_id;
1734        while (my $line = <$fd>) {
1735                chomp $line;
1736                if ($line =~ m/^object ([0-9a-fA-F]{40})$/) {
1737                        $tag{'object'} = $1;
1738                } elsif ($line =~ m/^type (.+)$/) {
1739                        $tag{'type'} = $1;
1740                } elsif ($line =~ m/^tag (.+)$/) {
1741                        $tag{'name'} = $1;
1742                } elsif ($line =~ m/^tagger (.*) ([0-9]+) (.*)$/) {
1743                        $tag{'author'} = $1;
1744                        $tag{'epoch'} = $2;
1745                        $tag{'tz'} = $3;
1746                } elsif ($line =~ m/--BEGIN/) {
1747                        push @comment, $line;
1748                        last;
1749                } elsif ($line eq "") {
1750                        last;
1751                }
1752        }
1753        push @comment, <$fd>;
1754        $tag{'comment'} = \@comment;
1755        close $fd or return;
1756        if (!defined $tag{'name'}) {
1757                return
1758        };
1759        return %tag
1760}
1761
1762sub parse_commit_text {
1763        my ($commit_text, $withparents) = @_;
1764        my @commit_lines = split '\n', $commit_text;
1765        my %co;
1766
1767        pop @commit_lines; # Remove '\0'
1768
1769        if (! @commit_lines) {
1770                return;
1771        }
1772
1773        my $header = shift @commit_lines;
1774        if ($header !~ m/^[0-9a-fA-F]{40}/) {
1775                return;
1776        }
1777        ($co{'id'}, my @parents) = split ' ', $header;
1778        while (my $line = shift @commit_lines) {
1779                last if $line eq "\n";
1780                if ($line =~ m/^tree ([0-9a-fA-F]{40})$/) {
1781                        $co{'tree'} = $1;
1782                } elsif ((!defined $withparents) && ($line =~ m/^parent ([0-9a-fA-F]{40})$/)) {
1783                        push @parents, $1;
1784                } elsif ($line =~ m/^author (.*) ([0-9]+) (.*)$/) {
1785                        $co{'author'} = $1;
1786                        $co{'author_epoch'} = $2;
1787                        $co{'author_tz'} = $3;
1788                        if ($co{'author'} =~ m/^([^<]+) <([^>]*)>/) {
1789                                $co{'author_name'}  = $1;
1790                                $co{'author_email'} = $2;
1791                        } else {
1792                                $co{'author_name'} = $co{'author'};
1793                        }
1794                } elsif ($line =~ m/^committer (.*) ([0-9]+) (.*)$/) {
1795                        $co{'committer'} = $1;
1796                        $co{'committer_epoch'} = $2;
1797                        $co{'committer_tz'} = $3;
1798                        $co{'committer_name'} = $co{'committer'};
1799                        if ($co{'committer'} =~ m/^([^<]+) <([^>]*)>/) {
1800                                $co{'committer_name'}  = $1;
1801                                $co{'committer_email'} = $2;
1802                        } else {
1803                                $co{'committer_name'} = $co{'committer'};
1804                        }
1805                }
1806        }
1807        if (!defined $co{'tree'}) {
1808                return;
1809        };
1810        $co{'parents'} = \@parents;
1811        $co{'parent'} = $parents[0];
1812
1813        foreach my $title (@commit_lines) {
1814                $title =~ s/^    //;
1815                if ($title ne "") {
1816                        $co{'title'} = chop_str($title, 80, 5);
1817                        # remove leading stuff of merges to make the interesting part visible
1818                        if (length($title) > 50) {
1819                                $title =~ s/^Automatic //;
1820                                $title =~ s/^merge (of|with) /Merge ... /i;
1821                                if (length($title) > 50) {
1822                                        $title =~ s/(http|rsync):\/\///;
1823                                }
1824                                if (length($title) > 50) {
1825                                        $title =~ s/(master|www|rsync)\.//;
1826                                }
1827                                if (length($title) > 50) {
1828                                        $title =~ s/kernel.org:?//;
1829                                }
1830                                if (length($title) > 50) {
1831                                        $title =~ s/\/pub\/scm//;
1832                                }
1833                        }
1834                        $co{'title_short'} = chop_str($title, 50, 5);
1835                        last;
1836                }
1837        }
1838        if ($co{'title'} eq "") {
1839                $co{'title'} = $co{'title_short'} = '(no commit message)';
1840        }
1841        # remove added spaces
1842        foreach my $line (@commit_lines) {
1843                $line =~ s/^    //;
1844        }
1845        $co{'comment'} = \@commit_lines;
1846
1847        my $age = time - $co{'committer_epoch'};
1848        $co{'age'} = $age;
1849        $co{'age_string'} = age_string($age);
1850        my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($co{'committer_epoch'});
1851        if ($age > 60*60*24*7*2) {
1852                $co{'age_string_date'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
1853                $co{'age_string_age'} = $co{'age_string'};
1854        } else {
1855                $co{'age_string_date'} = $co{'age_string'};
1856                $co{'age_string_age'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
1857        }
1858        return %co;
1859}
1860
1861sub parse_commit {
1862        my ($commit_id) = @_;
1863        my %co;
1864
1865        local $/ = "\0";
1866
1867        open my $fd, "-|", git_cmd(), "rev-list",
1868                "--parents",
1869                "--header",
1870                "--max-count=1",
1871                $commit_id,
1872                "--",
1873                or die_error(undef, "Open git-rev-list failed");
1874        %co = parse_commit_text(<$fd>, 1);
1875        close $fd;
1876
1877        return %co;
1878}
1879
1880sub parse_commits {
1881        my ($commit_id, $maxcount, $skip, $arg, $filename) = @_;
1882        my @cos;
1883
1884        $maxcount ||= 1;
1885        $skip ||= 0;
1886
1887        local $/ = "\0";
1888
1889        open my $fd, "-|", git_cmd(), "rev-list",
1890                "--header",
1891                ($arg ? ($arg) : ()),
1892                ("--max-count=" . $maxcount),
1893                ("--skip=" . $skip),
1894                @extra_options,
1895                $commit_id,
1896                "--",
1897                ($filename ? ($filename) : ())
1898                or die_error(undef, "Open git-rev-list failed");
1899        while (my $line = <$fd>) {
1900                my %co = parse_commit_text($line);
1901                push @cos, \%co;
1902        }
1903        close $fd;
1904
1905        return wantarray ? @cos : \@cos;
1906}
1907
1908# parse ref from ref_file, given by ref_id, with given type
1909sub parse_ref {
1910        my $ref_file = shift;
1911        my $ref_id = shift;
1912        my $type = shift || git_get_type($ref_id);
1913        my %ref_item;
1914
1915        $ref_item{'type'} = $type;
1916        $ref_item{'id'} = $ref_id;
1917        $ref_item{'epoch'} = 0;
1918        $ref_item{'age'} = "unknown";
1919        if ($type eq "tag") {
1920                my %tag = parse_tag($ref_id);
1921                $ref_item{'comment'} = $tag{'comment'};
1922                if ($tag{'type'} eq "commit") {
1923                        my %co = parse_commit($tag{'object'});
1924                        $ref_item{'epoch'} = $co{'committer_epoch'};
1925                        $ref_item{'age'} = $co{'age_string'};
1926                } elsif (defined($tag{'epoch'})) {
1927                        my $age = time - $tag{'epoch'};
1928                        $ref_item{'epoch'} = $tag{'epoch'};
1929                        $ref_item{'age'} = age_string($age);
1930                }
1931                $ref_item{'reftype'} = $tag{'type'};
1932                $ref_item{'name'} = $tag{'name'};
1933                $ref_item{'refid'} = $tag{'object'};
1934        } elsif ($type eq "commit"){
1935                my %co = parse_commit($ref_id);
1936                $ref_item{'reftype'} = "commit";
1937                $ref_item{'name'} = $ref_file;
1938                $ref_item{'title'} = $co{'title'};
1939                $ref_item{'refid'} = $ref_id;
1940                $ref_item{'epoch'} = $co{'committer_epoch'};
1941                $ref_item{'age'} = $co{'age_string'};
1942        } else {
1943                $ref_item{'reftype'} = $type;
1944                $ref_item{'name'} = $ref_file;
1945                $ref_item{'refid'} = $ref_id;
1946        }
1947
1948        return %ref_item;
1949}
1950
1951# parse line of git-diff-tree "raw" output
1952sub parse_difftree_raw_line {
1953        my $line = shift;
1954        my %res;
1955
1956        # ':100644 100644 03b218260e99b78c6df0ed378e59ed9205ccc96d 3b93d5e7cc7f7dd4ebed13a5cc1a4ad976fc94d8 M   ls-files.c'
1957        # ':100644 100644 7f9281985086971d3877aca27704f2aaf9c448ce bc190ebc71bbd923f2b728e505408f5e54bd073a M   rev-tree.c'
1958        if ($line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)([0-9]{0,3})\t(.*)$/) {
1959                $res{'from_mode'} = $1;
1960                $res{'to_mode'} = $2;
1961                $res{'from_id'} = $3;
1962                $res{'to_id'} = $4;
1963                $res{'status'} = $5;
1964                $res{'similarity'} = $6;
1965                if ($res{'status'} eq 'R' || $res{'status'} eq 'C') { # renamed or copied
1966                        ($res{'from_file'}, $res{'to_file'}) = map { unquote($_) } split("\t", $7);
1967                } else {
1968                        $res{'file'} = unquote($7);
1969                }
1970        }
1971        # '::100755 100755 100755 60e79ca1b01bc8b057abe17ddab484699a7f5fdb 94067cc5f73388f33722d52ae02f44692bc07490 94067cc5f73388f33722d52ae02f44692bc07490 MR git-gui/git-gui.sh'
1972        # combined diff (for merge commit)
1973        elsif ($line =~ s/^(::+)((?:[0-7]{6} )+)((?:[0-9a-fA-F]{40} )+)([a-zA-Z]+)\t(.*)$//) {
1974                $res{'nparents'}  = length($1);
1975                $res{'from_mode'} = [ split(' ', $2) ];
1976                $res{'to_mode'} = pop @{$res{'from_mode'}};
1977                $res{'from_id'} = [ split(' ', $3) ];
1978                $res{'to_id'} = pop @{$res{'from_id'}};
1979                $res{'status'} = [ split('', $4) ];
1980                $res{'to_file'} = unquote($5);
1981        }
1982        # 'c512b523472485aef4fff9e57b229d9d243c967f'
1983        elsif ($line =~ m/^([0-9a-fA-F]{40})$/) {
1984                $res{'commit'} = $1;
1985        }
1986
1987        return wantarray ? %res : \%res;
1988}
1989
1990# parse line of git-ls-tree output
1991sub parse_ls_tree_line ($;%) {
1992        my $line = shift;
1993        my %opts = @_;
1994        my %res;
1995
1996        #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
1997        $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t(.+)$/s;
1998
1999        $res{'mode'} = $1;
2000        $res{'type'} = $2;
2001        $res{'hash'} = $3;
2002        if ($opts{'-z'}) {
2003                $res{'name'} = $4;
2004        } else {
2005                $res{'name'} = unquote($4);
2006        }
2007
2008        return wantarray ? %res : \%res;
2009}
2010
2011# generates _two_ hashes, references to which are passed as 2 and 3 argument
2012sub parse_from_to_diffinfo {
2013        my ($diffinfo, $from, $to, @parents) = @_;
2014
2015        if ($diffinfo->{'nparents'}) {
2016                # combined diff
2017                $from->{'file'} = [];
2018                $from->{'href'} = [];
2019                fill_from_file_info($diffinfo, @parents)
2020                        unless exists $diffinfo->{'from_file'};
2021                for (my $i = 0; $i < $diffinfo->{'nparents'}; $i++) {
2022                        $from->{'file'}[$i] = $diffinfo->{'from_file'}[$i] || $diffinfo->{'to_file'};
2023                        if ($diffinfo->{'status'}[$i] ne "A") { # not new (added) file
2024                                $from->{'href'}[$i] = href(action=>"blob",
2025                                                           hash_base=>$parents[$i],
2026                                                           hash=>$diffinfo->{'from_id'}[$i],
2027                                                           file_name=>$from->{'file'}[$i]);
2028                        } else {
2029                                $from->{'href'}[$i] = undef;
2030                        }
2031                }
2032        } else {
2033                $from->{'file'} = $diffinfo->{'from_file'} || $diffinfo->{'file'};
2034                if ($diffinfo->{'status'} ne "A") { # not new (added) file
2035                        $from->{'href'} = href(action=>"blob", hash_base=>$hash_parent,
2036                                               hash=>$diffinfo->{'from_id'},
2037                                               file_name=>$from->{'file'});
2038                } else {
2039                        delete $from->{'href'};
2040                }
2041        }
2042
2043        $to->{'file'} = $diffinfo->{'to_file'} || $diffinfo->{'file'};
2044        if (!is_deleted($diffinfo)) { # file exists in result
2045                $to->{'href'} = href(action=>"blob", hash_base=>$hash,
2046                                     hash=>$diffinfo->{'to_id'},
2047                                     file_name=>$to->{'file'});
2048        } else {
2049                delete $to->{'href'};
2050        }
2051}
2052
2053## ......................................................................
2054## parse to array of hashes functions
2055
2056sub git_get_heads_list {
2057        my $limit = shift;
2058        my @headslist;
2059
2060        open my $fd, '-|', git_cmd(), 'for-each-ref',
2061                ($limit ? '--count='.($limit+1) : ()), '--sort=-committerdate',
2062                '--format=%(objectname) %(refname) %(subject)%00%(committer)',
2063                'refs/heads'
2064                or return;
2065        while (my $line = <$fd>) {
2066                my %ref_item;
2067
2068                chomp $line;
2069                my ($refinfo, $committerinfo) = split(/\0/, $line);
2070                my ($hash, $name, $title) = split(' ', $refinfo, 3);
2071                my ($committer, $epoch, $tz) =
2072                        ($committerinfo =~ /^(.*) ([0-9]+) (.*)$/);
2073                $name =~ s!^refs/heads/!!;
2074
2075                $ref_item{'name'}  = $name;
2076                $ref_item{'id'}    = $hash;
2077                $ref_item{'title'} = $title || '(no commit message)';
2078                $ref_item{'epoch'} = $epoch;
2079                if ($epoch) {
2080                        $ref_item{'age'} = age_string(time - $ref_item{'epoch'});
2081                } else {
2082                        $ref_item{'age'} = "unknown";
2083                }
2084
2085                push @headslist, \%ref_item;
2086        }
2087        close $fd;
2088
2089        return wantarray ? @headslist : \@headslist;
2090}
2091
2092sub git_get_tags_list {
2093        my $limit = shift;
2094        my @tagslist;
2095
2096        open my $fd, '-|', git_cmd(), 'for-each-ref',
2097                ($limit ? '--count='.($limit+1) : ()), '--sort=-creatordate',
2098                '--format=%(objectname) %(objecttype) %(refname) '.
2099                '%(*objectname) %(*objecttype) %(subject)%00%(creator)',
2100                'refs/tags'
2101                or return;
2102        while (my $line = <$fd>) {
2103                my %ref_item;
2104
2105                chomp $line;
2106                my ($refinfo, $creatorinfo) = split(/\0/, $line);
2107                my ($id, $type, $name, $refid, $reftype, $title) = split(' ', $refinfo, 6);
2108                my ($creator, $epoch, $tz) =
2109                        ($creatorinfo =~ /^(.*) ([0-9]+) (.*)$/);
2110                $name =~ s!^refs/tags/!!;
2111
2112                $ref_item{'type'} = $type;
2113                $ref_item{'id'} = $id;
2114                $ref_item{'name'} = $name;
2115                if ($type eq "tag") {
2116                        $ref_item{'subject'} = $title;
2117                        $ref_item{'reftype'} = $reftype;
2118                        $ref_item{'refid'}   = $refid;
2119                } else {
2120                        $ref_item{'reftype'} = $type;
2121                        $ref_item{'refid'}   = $id;
2122                }
2123
2124                if ($type eq "tag" || $type eq "commit") {
2125                        $ref_item{'epoch'} = $epoch;
2126                        if ($epoch) {
2127                                $ref_item{'age'} = age_string(time - $ref_item{'epoch'});
2128                        } else {
2129                                $ref_item{'age'} = "unknown";
2130                        }
2131                }
2132
2133                push @tagslist, \%ref_item;
2134        }
2135        close $fd;
2136
2137        return wantarray ? @tagslist : \@tagslist;
2138}
2139
2140## ----------------------------------------------------------------------
2141## filesystem-related functions
2142
2143sub get_file_owner {
2144        my $path = shift;
2145
2146        my ($dev, $ino, $mode, $nlink, $st_uid, $st_gid, $rdev, $size) = stat($path);
2147        my ($name, $passwd, $uid, $gid, $quota, $comment, $gcos, $dir, $shell) = getpwuid($st_uid);
2148        if (!defined $gcos) {
2149                return undef;
2150        }
2151        my $owner = $gcos;
2152        $owner =~ s/[,;].*$//;
2153        return to_utf8($owner);
2154}
2155
2156## ......................................................................
2157## mimetype related functions
2158
2159sub mimetype_guess_file {
2160        my $filename = shift;
2161        my $mimemap = shift;
2162        -r $mimemap or return undef;
2163
2164        my %mimemap;
2165        open(MIME, $mimemap) or return undef;
2166        while (<MIME>) {
2167                next if m/^#/; # skip comments
2168                my ($mime, $exts) = split(/\t+/);
2169                if (defined $exts) {
2170                        my @exts = split(/\s+/, $exts);
2171                        foreach my $ext (@exts) {
2172                                $mimemap{$ext} = $mime;
2173                        }
2174                }
2175        }
2176        close(MIME);
2177
2178        $filename =~ /\.([^.]*)$/;
2179        return $mimemap{$1};
2180}
2181
2182sub mimetype_guess {
2183        my $filename = shift;
2184        my $mime;
2185        $filename =~ /\./ or return undef;
2186
2187        if ($mimetypes_file) {
2188                my $file = $mimetypes_file;
2189                if ($file !~ m!^/!) { # if it is relative path
2190                        # it is relative to project
2191                        $file = "$projectroot/$project/$file";
2192                }
2193                $mime = mimetype_guess_file($filename, $file);
2194        }
2195        $mime ||= mimetype_guess_file($filename, '/etc/mime.types');
2196        return $mime;
2197}
2198
2199sub blob_mimetype {
2200        my $fd = shift;
2201        my $filename = shift;
2202
2203        if ($filename) {
2204                my $mime = mimetype_guess($filename);
2205                $mime and return $mime;
2206        }
2207
2208        # just in case
2209        return $default_blob_plain_mimetype unless $fd;
2210
2211        if (-T $fd) {
2212                return 'text/plain' .
2213                       ($default_text_plain_charset ? '; charset='.$default_text_plain_charset : '');
2214        } elsif (! $filename) {
2215                return 'application/octet-stream';
2216        } elsif ($filename =~ m/\.png$/i) {
2217                return 'image/png';
2218        } elsif ($filename =~ m/\.gif$/i) {
2219                return 'image/gif';
2220        } elsif ($filename =~ m/\.jpe?g$/i) {
2221                return 'image/jpeg';
2222        } else {
2223                return 'application/octet-stream';
2224        }
2225}
2226
2227## ======================================================================
2228## functions printing HTML: header, footer, error page
2229
2230sub git_header_html {
2231        my $status = shift || "200 OK";
2232        my $expires = shift;
2233
2234        my $title = "$site_name";
2235        if (defined $project) {
2236                $title .= " - " . to_utf8($project);
2237                if (defined $action) {
2238                        $title .= "/$action";
2239                        if (defined $file_name) {
2240                                $title .= " - " . esc_path($file_name);
2241                                if ($action eq "tree" && $file_name !~ m|/$|) {
2242                                        $title .= "/";
2243                                }
2244                        }
2245                }
2246        }
2247        my $content_type;
2248        # require explicit support from the UA if we are to send the page as
2249        # 'application/xhtml+xml', otherwise send it as plain old 'text/html'.
2250        # we have to do this because MSIE sometimes globs '*/*', pretending to
2251        # support xhtml+xml but choking when it gets what it asked for.
2252        if (defined $cgi->http('HTTP_ACCEPT') &&
2253            $cgi->http('HTTP_ACCEPT') =~ m/(,|;|\s|^)application\/xhtml\+xml(,|;|\s|$)/ &&
2254            $cgi->Accept('application/xhtml+xml') != 0) {
2255                $content_type = 'application/xhtml+xml';
2256        } else {
2257                $content_type = 'text/html';
2258        }
2259        print $cgi->header(-type=>$content_type, -charset => 'utf-8',
2260                           -status=> $status, -expires => $expires);
2261        my $mod_perl_version = $ENV{'MOD_PERL'} ? " $ENV{'MOD_PERL'}" : '';
2262        print <<EOF;
2263<?xml version="1.0" encoding="utf-8"?>
2264<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
2265<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en-US" lang="en-US">
2266<!-- git web interface version $version, (C) 2005-2006, Kay Sievers <kay.sievers\@vrfy.org>, Christian Gierke -->
2267<!-- git core binaries version $git_version -->
2268<head>
2269<meta http-equiv="content-type" content="$content_type; charset=utf-8"/>
2270<meta name="generator" content="gitweb/$version git/$git_version$mod_perl_version"/>
2271<meta name="robots" content="index, nofollow"/>
2272<title>$title</title>
2273EOF
2274# print out each stylesheet that exist
2275        if (defined $stylesheet) {
2276#provides backwards capability for those people who define style sheet in a config file
2277                print '<link rel="stylesheet" type="text/css" href="'.$stylesheet.'"/>'."\n";
2278        } else {
2279                foreach my $stylesheet (@stylesheets) {
2280                        next unless $stylesheet;
2281                        print '<link rel="stylesheet" type="text/css" href="'.$stylesheet.'"/>'."\n";
2282                }
2283        }
2284        if (defined $project) {
2285                printf('<link rel="alternate" title="%s log RSS feed" '.
2286                       'href="%s" type="application/rss+xml" />'."\n",
2287                       esc_param($project), href(action=>"rss"));
2288                printf('<link rel="alternate" title="%s log Atom feed" '.
2289                       'href="%s" type="application/atom+xml" />'."\n",
2290                       esc_param($project), href(action=>"atom"));
2291        } else {
2292                printf('<link rel="alternate" title="%s projects list" '.
2293                       'href="%s" type="text/plain; charset=utf-8"/>'."\n",
2294                       $site_name, href(project=>undef, action=>"project_index"));
2295                printf('<link rel="alternate" title="%s projects feeds" '.
2296                       'href="%s" type="text/x-opml"/>'."\n",
2297                       $site_name, href(project=>undef, action=>"opml"));
2298        }
2299        if (defined $favicon) {
2300                print qq(<link rel="shortcut icon" href="$favicon" type="image/png"/>\n);
2301        }
2302
2303        print "</head>\n" .
2304              "<body>\n";
2305
2306        if (-f $site_header) {
2307                open (my $fd, $site_header);
2308                print <$fd>;
2309                close $fd;
2310        }
2311
2312        print "<div class=\"page_header\">\n" .
2313              $cgi->a({-href => esc_url($logo_url),
2314                       -title => $logo_label},
2315                      qq(<img src="$logo" width="72" height="27" alt="git" class="logo"/>));
2316        print $cgi->a({-href => esc_url($home_link)}, $home_link_str) . " / ";
2317        if (defined $project) {
2318                print $cgi->a({-href => href(action=>"summary")}, esc_html($project));
2319                if (defined $action) {
2320                        print " / $action";
2321                }
2322                print "\n";
2323        }
2324        print "</div>\n";
2325
2326        my ($have_search) = gitweb_check_feature('search');
2327        if ((defined $project) && ($have_search)) {
2328                if (!defined $searchtext) {
2329                        $searchtext = "";
2330                }
2331                my $search_hash;
2332                if (defined $hash_base) {
2333                        $search_hash = $hash_base;
2334                } elsif (defined $hash) {
2335                        $search_hash = $hash;
2336                } else {
2337                        $search_hash = "HEAD";
2338                }
2339                my $action = $my_uri;
2340                my ($use_pathinfo) = gitweb_check_feature('pathinfo');
2341                if ($use_pathinfo) {
2342                        $action .= "/$project";
2343                } else {
2344                        $cgi->param("p", $project);
2345                }
2346                $cgi->param("a", "search");
2347                $cgi->param("h", $search_hash);
2348                print $cgi->startform(-method => "get", -action => $action) .
2349                      "<div class=\"search\">\n" .
2350                      (!$use_pathinfo && $cgi->hidden(-name => "p") . "\n") .
2351                      $cgi->hidden(-name => "a") . "\n" .
2352                      $cgi->hidden(-name => "h") . "\n" .
2353                      $cgi->popup_menu(-name => 'st', -default => 'commit',
2354                                       -values => ['commit', 'grep', 'author', 'committer', 'pickaxe']) .
2355                      $cgi->sup($cgi->a({-href => href(action=>"search_help")}, "?")) .
2356                      " search:\n",
2357                      $cgi->textfield(-name => "s", -value => $searchtext) . "\n" .
2358                      "</div>" .
2359                      $cgi->end_form() . "\n";
2360        }
2361}
2362
2363sub git_footer_html {
2364        print "<div class=\"page_footer\">\n";
2365        if (defined $project) {
2366                my $descr = git_get_project_description($project);
2367                if (defined $descr) {
2368                        print "<div class=\"page_footer_text\">" . esc_html($descr) . "</div>\n";
2369                }
2370                print $cgi->a({-href => href(action=>"rss"),
2371                              -class => "rss_logo"}, "RSS") . " ";
2372                print $cgi->a({-href => href(action=>"atom"),
2373                              -class => "rss_logo"}, "Atom") . "\n";
2374        } else {
2375                print $cgi->a({-href => href(project=>undef, action=>"opml"),
2376                              -class => "rss_logo"}, "OPML") . " ";
2377                print $cgi->a({-href => href(project=>undef, action=>"project_index"),
2378                              -class => "rss_logo"}, "TXT") . "\n";
2379        }
2380        print "</div>\n" ;
2381
2382        if (-f $site_footer) {
2383                open (my $fd, $site_footer);
2384                print <$fd>;
2385                close $fd;
2386        }
2387
2388        print "</body>\n" .
2389              "</html>";
2390}
2391
2392sub die_error {
2393        my $status = shift || "403 Forbidden";
2394        my $error = shift || "Malformed query, file missing or permission denied";
2395
2396        git_header_html($status);
2397        print <<EOF;
2398<div class="page_body">
2399<br /><br />
2400$status - $error
2401<br />
2402</div>
2403EOF
2404        git_footer_html();
2405        exit;
2406}
2407
2408## ----------------------------------------------------------------------
2409## functions printing or outputting HTML: navigation
2410
2411sub git_print_page_nav {
2412        my ($current, $suppress, $head, $treehead, $treebase, $extra) = @_;
2413        $extra = '' if !defined $extra; # pager or formats
2414
2415        my @navs = qw(summary shortlog log commit commitdiff tree);
2416        if ($suppress) {
2417                @navs = grep { $_ ne $suppress } @navs;
2418        }
2419
2420        my %arg = map { $_ => {action=>$_} } @navs;
2421        if (defined $head) {
2422                for (qw(commit commitdiff)) {
2423                        $arg{$_}{'hash'} = $head;
2424                }
2425                if ($current =~ m/^(tree | log | shortlog | commit | commitdiff | search)$/x) {
2426                        for (qw(shortlog log)) {
2427                                $arg{$_}{'hash'} = $head;
2428                        }
2429                }
2430        }
2431        $arg{'tree'}{'hash'} = $treehead if defined $treehead;
2432        $arg{'tree'}{'hash_base'} = $treebase if defined $treebase;
2433
2434        print "<div class=\"page_nav\">\n" .
2435                (join " | ",
2436                 map { $_ eq $current ?
2437                       $_ : $cgi->a({-href => href(%{$arg{$_}})}, "$_")
2438                 } @navs);
2439        print "<br/>\n$extra<br/>\n" .
2440              "</div>\n";
2441}
2442
2443sub format_paging_nav {
2444        my ($action, $hash, $head, $page, $nrevs) = @_;
2445        my $paging_nav;
2446
2447
2448        if ($hash ne $head || $page) {
2449                $paging_nav .= $cgi->a({-href => href(action=>$action)}, "HEAD");
2450        } else {
2451                $paging_nav .= "HEAD";
2452        }
2453
2454        if ($page > 0) {
2455                $paging_nav .= " &sdot; " .
2456                        $cgi->a({-href => href(action=>$action, hash=>$hash, page=>$page-1),
2457                                 -accesskey => "p", -title => "Alt-p"}, "prev");
2458        } else {
2459                $paging_nav .= " &sdot; prev";
2460        }
2461
2462        if ($nrevs >= (100 * ($page+1)-1)) {
2463                $paging_nav .= " &sdot; " .
2464                        $cgi->a({-href => href(action=>$action, hash=>$hash, page=>$page+1),
2465                                 -accesskey => "n", -title => "Alt-n"}, "next");
2466        } else {
2467                $paging_nav .= " &sdot; next";
2468        }
2469
2470        return $paging_nav;
2471}
2472
2473## ......................................................................
2474## functions printing or outputting HTML: div
2475
2476sub git_print_header_div {
2477        my ($action, $title, $hash, $hash_base) = @_;
2478        my %args = ();
2479
2480        $args{'action'} = $action;
2481        $args{'hash'} = $hash if $hash;
2482        $args{'hash_base'} = $hash_base if $hash_base;
2483
2484        print "<div class=\"header\">\n" .
2485              $cgi->a({-href => href(%args), -class => "title"},
2486              $title ? $title : $action) .
2487              "\n</div>\n";
2488}
2489
2490#sub git_print_authorship (\%) {
2491sub git_print_authorship {
2492        my $co = shift;
2493
2494        my %ad = parse_date($co->{'author_epoch'}, $co->{'author_tz'});
2495        print "<div class=\"author_date\">" .
2496              esc_html($co->{'author_name'}) .
2497              " [$ad{'rfc2822'}";
2498        if ($ad{'hour_local'} < 6) {
2499                printf(" (<span class=\"atnight\">%02d:%02d</span> %s)",
2500                       $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
2501        } else {
2502                printf(" (%02d:%02d %s)",
2503                       $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
2504        }
2505        print "]</div>\n";
2506}
2507
2508sub git_print_page_path {
2509        my $name = shift;
2510        my $type = shift;
2511        my $hb = shift;
2512
2513
2514        print "<div class=\"page_path\">";
2515        print $cgi->a({-href => href(action=>"tree", hash_base=>$hb),
2516                      -title => 'tree root'}, to_utf8("[$project]"));
2517        print " / ";
2518        if (defined $name) {
2519                my @dirname = split '/', $name;
2520                my $basename = pop @dirname;
2521                my $fullname = '';
2522
2523                foreach my $dir (@dirname) {
2524                        $fullname .= ($fullname ? '/' : '') . $dir;
2525                        print $cgi->a({-href => href(action=>"tree", file_name=>$fullname,
2526                                                     hash_base=>$hb),
2527                                      -title => $fullname}, esc_path($dir));
2528                        print " / ";
2529                }
2530                if (defined $type && $type eq 'blob') {
2531                        print $cgi->a({-href => href(action=>"blob_plain", file_name=>$file_name,
2532                                                     hash_base=>$hb),
2533                                      -title => $name}, esc_path($basename));
2534                } elsif (defined $type && $type eq 'tree') {
2535                        print $cgi->a({-href => href(action=>"tree", file_name=>$file_name,
2536                                                     hash_base=>$hb),
2537                                      -title => $name}, esc_path($basename));
2538                        print " / ";
2539                } else {
2540                        print esc_path($basename);
2541                }
2542        }
2543        print "<br/></div>\n";
2544}
2545
2546# sub git_print_log (\@;%) {
2547sub git_print_log ($;%) {
2548        my $log = shift;
2549        my %opts = @_;
2550
2551        if ($opts{'-remove_title'}) {
2552                # remove title, i.e. first line of log
2553                shift @$log;
2554        }
2555        # remove leading empty lines
2556        while (defined $log->[0] && $log->[0] eq "") {
2557                shift @$log;
2558        }
2559
2560        # print log
2561        my $signoff = 0;
2562        my $empty = 0;
2563        foreach my $line (@$log) {
2564                if ($line =~ m/^ *(signed[ \-]off[ \-]by[ :]|acked[ \-]by[ :]|cc[ :])/i) {
2565                        $signoff = 1;
2566                        $empty = 0;
2567                        if (! $opts{'-remove_signoff'}) {
2568                                print "<span class=\"signoff\">" . esc_html($line) . "</span><br/>\n";
2569                                next;
2570                        } else {
2571                                # remove signoff lines
2572                                next;
2573                        }
2574                } else {
2575                        $signoff = 0;
2576                }
2577
2578                # print only one empty line
2579                # do not print empty line after signoff
2580                if ($line eq "") {
2581                        next if ($empty || $signoff);
2582                        $empty = 1;
2583                } else {
2584                        $empty = 0;
2585                }
2586
2587                print format_log_line_html($line) . "<br/>\n";
2588        }
2589
2590        if ($opts{'-final_empty_line'}) {
2591                # end with single empty line
2592                print "<br/>\n" unless $empty;
2593        }
2594}
2595
2596# return link target (what link points to)
2597sub git_get_link_target {
2598        my $hash = shift;
2599        my $link_target;
2600
2601        # read link
2602        open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
2603                or return;
2604        {
2605                local $/;
2606                $link_target = <$fd>;
2607        }
2608        close $fd
2609                or return;
2610
2611        return $link_target;
2612}
2613
2614# given link target, and the directory (basedir) the link is in,
2615# return target of link relative to top directory (top tree);
2616# return undef if it is not possible (including absolute links).
2617sub normalize_link_target {
2618        my ($link_target, $basedir, $hash_base) = @_;
2619
2620        # we can normalize symlink target only if $hash_base is provided
2621        return unless $hash_base;
2622
2623        # absolute symlinks (beginning with '/') cannot be normalized
2624        return if (substr($link_target, 0, 1) eq '/');
2625
2626        # normalize link target to path from top (root) tree (dir)
2627        my $path;
2628        if ($basedir) {
2629                $path = $basedir . '/' . $link_target;
2630        } else {
2631                # we are in top (root) tree (dir)
2632                $path = $link_target;
2633        }
2634
2635        # remove //, /./, and /../
2636        my @path_parts;
2637        foreach my $part (split('/', $path)) {
2638                # discard '.' and ''
2639                next if (!$part || $part eq '.');
2640                # handle '..'
2641                if ($part eq '..') {
2642                        if (@path_parts) {
2643                                pop @path_parts;
2644                        } else {
2645                                # link leads outside repository (outside top dir)
2646                                return;
2647                        }
2648                } else {
2649                        push @path_parts, $part;
2650                }
2651        }
2652        $path = join('/', @path_parts);
2653
2654        return $path;
2655}
2656
2657# print tree entry (row of git_tree), but without encompassing <tr> element
2658sub git_print_tree_entry {
2659        my ($t, $basedir, $hash_base, $have_blame) = @_;
2660
2661        my %base_key = ();
2662        $base_key{'hash_base'} = $hash_base if defined $hash_base;
2663
2664        # The format of a table row is: mode list link.  Where mode is
2665        # the mode of the entry, list is the name of the entry, an href,
2666        # and link is the action links of the entry.
2667
2668        print "<td class=\"mode\">" . mode_str($t->{'mode'}) . "</td>\n";
2669        if ($t->{'type'} eq "blob") {
2670                print "<td class=\"list\">" .
2671                        $cgi->a({-href => href(action=>"blob", hash=>$t->{'hash'},
2672                                               file_name=>"$basedir$t->{'name'}", %base_key),
2673                                -class => "list"}, esc_path($t->{'name'}));
2674                if (S_ISLNK(oct $t->{'mode'})) {
2675                        my $link_target = git_get_link_target($t->{'hash'});
2676                        if ($link_target) {
2677                                my $norm_target = normalize_link_target($link_target, $basedir, $hash_base);
2678                                if (defined $norm_target) {
2679                                        print " -> " .
2680                                              $cgi->a({-href => href(action=>"object", hash_base=>$hash_base,
2681                                                                     file_name=>$norm_target),
2682                                                       -title => $norm_target}, esc_path($link_target));
2683                                } else {
2684                                        print " -> " . esc_path($link_target);
2685                                }
2686                        }
2687                }
2688                print "</td>\n";
2689                print "<td class=\"link\">";
2690                print $cgi->a({-href => href(action=>"blob", hash=>$t->{'hash'},
2691                                             file_name=>"$basedir$t->{'name'}", %base_key)},
2692                              "blob");
2693                if ($have_blame) {
2694                        print " | " .
2695                              $cgi->a({-href => href(action=>"blame", hash=>$t->{'hash'},
2696                                                     file_name=>"$basedir$t->{'name'}", %base_key)},
2697                                      "blame");
2698                }
2699                if (defined $hash_base) {
2700                        print " | " .
2701                              $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
2702                                                     hash=>$t->{'hash'}, file_name=>"$basedir$t->{'name'}")},
2703                                      "history");
2704                }
2705                print " | " .
2706                        $cgi->a({-href => href(action=>"blob_plain", hash_base=>$hash_base,
2707                                               file_name=>"$basedir$t->{'name'}")},
2708                                "raw");
2709                print "</td>\n";
2710
2711        } elsif ($t->{'type'} eq "tree") {
2712                print "<td class=\"list\">";
2713                print $cgi->a({-href => href(action=>"tree", hash=>$t->{'hash'},
2714                                             file_name=>"$basedir$t->{'name'}", %base_key)},
2715                              esc_path($t->{'name'}));
2716                print "</td>\n";
2717                print "<td class=\"link\">";
2718                print $cgi->a({-href => href(action=>"tree", hash=>$t->{'hash'},
2719                                             file_name=>"$basedir$t->{'name'}", %base_key)},
2720                              "tree");
2721                if (defined $hash_base) {
2722                        print " | " .
2723                              $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
2724                                                     file_name=>"$basedir$t->{'name'}")},
2725                                      "history");
2726                }
2727                print "</td>\n";
2728        } else {
2729                # unknown object: we can only present history for it
2730                # (this includes 'commit' object, i.e. submodule support)
2731                print "<td class=\"list\">" .
2732                      esc_path($t->{'name'}) .
2733                      "</td>\n";
2734                print "<td class=\"link\">";
2735                if (defined $hash_base) {
2736                        print $cgi->a({-href => href(action=>"history",
2737                                                     hash_base=>$hash_base,
2738                                                     file_name=>"$basedir$t->{'name'}")},
2739                                      "history");
2740                }
2741                print "</td>\n";
2742        }
2743}
2744
2745## ......................................................................
2746## functions printing large fragments of HTML
2747
2748sub fill_from_file_info {
2749        my ($diff, @parents) = @_;
2750
2751        $diff->{'from_file'} = [ ];
2752        $diff->{'from_file'}[$diff->{'nparents'} - 1] = undef;
2753        for (my $i = 0; $i < $diff->{'nparents'}; $i++) {
2754                if ($diff->{'status'}[$i] eq 'R' ||
2755                    $diff->{'status'}[$i] eq 'C') {
2756                        $diff->{'from_file'}[$i] =
2757                                git_get_path_by_hash($parents[$i], $diff->{'from_id'}[$i]);
2758                }
2759        }
2760
2761        return $diff;
2762}
2763
2764# parameters can be strings, or references to arrays of strings
2765sub from_ids_eq {
2766        my ($a, $b) = @_;
2767
2768        if (ref($a) eq "ARRAY" && ref($b) eq "ARRAY" && @$a == @$b) {
2769                for (my $i = 0; $i < @$a; ++$i) {
2770                        return 0 unless ($a->[$i] eq $b->[$i]);
2771                }
2772                return 1;
2773        } elsif (!ref($a) && !ref($b)) {
2774                return $a eq $b;
2775        } else {
2776                return 0;
2777        }
2778}
2779
2780sub is_deleted {
2781        my $diffinfo = shift;
2782
2783        return $diffinfo->{'to_id'} eq ('0' x 40);
2784}
2785
2786sub git_difftree_body {
2787        my ($difftree, $hash, @parents) = @_;
2788        my ($parent) = $parents[0];
2789        my ($have_blame) = gitweb_check_feature('blame');
2790        print "<div class=\"list_head\">\n";
2791        if ($#{$difftree} > 10) {
2792                print(($#{$difftree} + 1) . " files changed:\n");
2793        }
2794        print "</div>\n";
2795
2796        print "<table class=\"" .
2797              (@parents > 1 ? "combined " : "") .
2798              "diff_tree\">\n";
2799
2800        # header only for combined diff in 'commitdiff' view
2801        my $has_header = @parents > 1 && $action eq 'commitdiff';
2802        if ($has_header) {
2803                # table header
2804                print "<thead><tr>\n" .
2805                       "<th></th><th></th>\n"; # filename, patchN link
2806                for (my $i = 0; $i < @parents; $i++) {
2807                        my $par = $parents[$i];
2808                        print "<th>" .
2809                              $cgi->a({-href => href(action=>"commitdiff",
2810                                                     hash=>$hash, hash_parent=>$par),
2811                                       -title => 'commitdiff to parent number ' .
2812                                                  ($i+1) . ': ' . substr($par,0,7)},
2813                                      $i+1) .
2814                              "&nbsp;</th>\n";
2815                }
2816                print "</tr></thead>\n<tbody>\n";
2817        }
2818
2819        my $alternate = 1;
2820        my $patchno = 0;
2821        foreach my $line (@{$difftree}) {
2822                my $diff;
2823                if (ref($line) eq "HASH") {
2824                        # pre-parsed (or generated by hand)
2825                        $diff = $line;
2826                } else {
2827                        $diff = parse_difftree_raw_line($line);
2828                }
2829
2830                if ($alternate) {
2831                        print "<tr class=\"dark\">\n";
2832                } else {
2833                        print "<tr class=\"light\">\n";
2834                }
2835                $alternate ^= 1;
2836
2837                if (exists $diff->{'nparents'}) { # combined diff
2838
2839                        fill_from_file_info($diff, @parents)
2840                                unless exists $diff->{'from_file'};
2841
2842                        if (!is_deleted($diff)) {
2843                                # file exists in the result (child) commit
2844                                print "<td>" .
2845                                      $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
2846                                                             file_name=>$diff->{'to_file'},
2847                                                             hash_base=>$hash),
2848                                              -class => "list"}, esc_path($diff->{'to_file'})) .
2849                                      "</td>\n";
2850                        } else {
2851                                print "<td>" .
2852                                      esc_path($diff->{'to_file'}) .
2853                                      "</td>\n";
2854                        }
2855
2856                        if ($action eq 'commitdiff') {
2857                                # link to patch
2858                                $patchno++;
2859                                print "<td class=\"link\">" .
2860                                      $cgi->a({-href => "#patch$patchno"}, "patch") .
2861                                      " | " .
2862                                      "</td>\n";
2863                        }
2864
2865                        my $has_history = 0;
2866                        my $not_deleted = 0;
2867                        for (my $i = 0; $i < $diff->{'nparents'}; $i++) {
2868                                my $hash_parent = $parents[$i];
2869                                my $from_hash = $diff->{'from_id'}[$i];
2870                                my $from_path = $diff->{'from_file'}[$i];
2871                                my $status = $diff->{'status'}[$i];
2872
2873                                $has_history ||= ($status ne 'A');
2874                                $not_deleted ||= ($status ne 'D');
2875
2876                                if ($status eq 'A') {
2877                                        print "<td  class=\"link\" align=\"right\"> | </td>\n";
2878                                } elsif ($status eq 'D') {
2879                                        print "<td class=\"link\">" .
2880                                              $cgi->a({-href => href(action=>"blob",
2881                                                                     hash_base=>$hash,
2882                                                                     hash=>$from_hash,
2883                                                                     file_name=>$from_path)},
2884                                                      "blob" . ($i+1)) .
2885                                              " | </td>\n";
2886                                } else {
2887                                        if ($diff->{'to_id'} eq $from_hash) {
2888                                                print "<td class=\"link nochange\">";
2889                                        } else {
2890                                                print "<td class=\"link\">";
2891                                        }
2892                                        print $cgi->a({-href => href(action=>"blobdiff",
2893                                                                     hash=>$diff->{'to_id'},
2894                                                                     hash_parent=>$from_hash,
2895                                                                     hash_base=>$hash,
2896                                                                     hash_parent_base=>$hash_parent,
2897                                                                     file_name=>$diff->{'to_file'},
2898                                                                     file_parent=>$from_path)},
2899                                                      "diff" . ($i+1)) .
2900                                              " | </td>\n";
2901                                }
2902                        }
2903
2904                        print "<td class=\"link\">";
2905                        if ($not_deleted) {
2906                                print $cgi->a({-href => href(action=>"blob",
2907                                                             hash=>$diff->{'to_id'},
2908                                                             file_name=>$diff->{'to_file'},
2909                                                             hash_base=>$hash)},
2910                                              "blob");
2911                                print " | " if ($has_history);
2912                        }
2913                        if ($has_history) {
2914                                print $cgi->a({-href => href(action=>"history",
2915                                                             file_name=>$diff->{'to_file'},
2916                                                             hash_base=>$hash)},
2917                                              "history");
2918                        }
2919                        print "</td>\n";
2920
2921                        print "</tr>\n";
2922                        next; # instead of 'else' clause, to avoid extra indent
2923                }
2924                # else ordinary diff
2925
2926                my ($to_mode_oct, $to_mode_str, $to_file_type);
2927                my ($from_mode_oct, $from_mode_str, $from_file_type);
2928                if ($diff->{'to_mode'} ne ('0' x 6)) {
2929                        $to_mode_oct = oct $diff->{'to_mode'};
2930                        if (S_ISREG($to_mode_oct)) { # only for regular file
2931                                $to_mode_str = sprintf("%04o", $to_mode_oct & 0777); # permission bits
2932                        }
2933                        $to_file_type = file_type($diff->{'to_mode'});
2934                }
2935                if ($diff->{'from_mode'} ne ('0' x 6)) {
2936                        $from_mode_oct = oct $diff->{'from_mode'};
2937                        if (S_ISREG($to_mode_oct)) { # only for regular file
2938                                $from_mode_str = sprintf("%04o", $from_mode_oct & 0777); # permission bits
2939                        }
2940                        $from_file_type = file_type($diff->{'from_mode'});
2941                }
2942
2943                if ($diff->{'status'} eq "A") { # created
2944                        my $mode_chng = "<span class=\"file_status new\">[new $to_file_type";
2945                        $mode_chng   .= " with mode: $to_mode_str" if $to_mode_str;
2946                        $mode_chng   .= "]</span>";
2947                        print "<td>";
2948                        print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
2949                                                     hash_base=>$hash, file_name=>$diff->{'file'}),
2950                                      -class => "list"}, esc_path($diff->{'file'}));
2951                        print "</td>\n";
2952                        print "<td>$mode_chng</td>\n";
2953                        print "<td class=\"link\">";
2954                        if ($action eq 'commitdiff') {
2955                                # link to patch
2956                                $patchno++;
2957                                print $cgi->a({-href => "#patch$patchno"}, "patch");
2958                                print " | ";
2959                        }
2960                        print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
2961                                                     hash_base=>$hash, file_name=>$diff->{'file'})},
2962                                      "blob");
2963                        print "</td>\n";
2964
2965                } elsif ($diff->{'status'} eq "D") { # deleted
2966                        my $mode_chng = "<span class=\"file_status deleted\">[deleted $from_file_type]</span>";
2967                        print "<td>";
2968                        print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'from_id'},
2969                                                     hash_base=>$parent, file_name=>$diff->{'file'}),
2970                                       -class => "list"}, esc_path($diff->{'file'}));
2971                        print "</td>\n";
2972                        print "<td>$mode_chng</td>\n";
2973                        print "<td class=\"link\">";
2974                        if ($action eq 'commitdiff') {
2975                                # link to patch
2976                                $patchno++;
2977                                print $cgi->a({-href => "#patch$patchno"}, "patch");
2978                                print " | ";
2979                        }
2980                        print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'from_id'},
2981                                                     hash_base=>$parent, file_name=>$diff->{'file'})},
2982                                      "blob") . " | ";
2983                        if ($have_blame) {
2984                                print $cgi->a({-href => href(action=>"blame", hash_base=>$parent,
2985                                                             file_name=>$diff->{'file'})},
2986                                              "blame") . " | ";
2987                        }
2988                        print $cgi->a({-href => href(action=>"history", hash_base=>$parent,
2989                                                     file_name=>$diff->{'file'})},
2990                                      "history");
2991                        print "</td>\n";
2992
2993                } elsif ($diff->{'status'} eq "M" || $diff->{'status'} eq "T") { # modified, or type changed
2994                        my $mode_chnge = "";
2995                        if ($diff->{'from_mode'} != $diff->{'to_mode'}) {
2996                                $mode_chnge = "<span class=\"file_status mode_chnge\">[changed";
2997                                if ($from_file_type ne $to_file_type) {
2998                                        $mode_chnge .= " from $from_file_type to $to_file_type";
2999                                }
3000                                if (($from_mode_oct & 0777) != ($to_mode_oct & 0777)) {
3001                                        if ($from_mode_str && $to_mode_str) {
3002                                                $mode_chnge .= " mode: $from_mode_str->$to_mode_str";
3003                                        } elsif ($to_mode_str) {
3004                                                $mode_chnge .= " mode: $to_mode_str";
3005                                        }
3006                                }
3007                                $mode_chnge .= "]</span>\n";
3008                        }
3009                        print "<td>";
3010                        print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
3011                                                     hash_base=>$hash, file_name=>$diff->{'file'}),
3012                                      -class => "list"}, esc_path($diff->{'file'}));
3013                        print "</td>\n";
3014                        print "<td>$mode_chnge</td>\n";
3015                        print "<td class=\"link\">";
3016                        if ($action eq 'commitdiff') {
3017                                # link to patch
3018                                $patchno++;
3019                                print $cgi->a({-href => "#patch$patchno"}, "patch") .
3020                                      " | ";
3021                        } elsif ($diff->{'to_id'} ne $diff->{'from_id'}) {
3022                                # "commit" view and modified file (not onlu mode changed)
3023                                print $cgi->a({-href => href(action=>"blobdiff",
3024                                                             hash=>$diff->{'to_id'}, hash_parent=>$diff->{'from_id'},
3025                                                             hash_base=>$hash, hash_parent_base=>$parent,
3026                                                             file_name=>$diff->{'file'})},
3027                                              "diff") .
3028                                      " | ";
3029                        }
3030                        print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
3031                                                     hash_base=>$hash, file_name=>$diff->{'file'})},
3032                                       "blob") . " | ";
3033                        if ($have_blame) {
3034                                print $cgi->a({-href => href(action=>"blame", hash_base=>$hash,
3035                                                             file_name=>$diff->{'file'})},
3036                                              "blame") . " | ";
3037                        }
3038                        print $cgi->a({-href => href(action=>"history", hash_base=>$hash,
3039                                                     file_name=>$diff->{'file'})},
3040                                      "history");
3041                        print "</td>\n";
3042
3043                } elsif ($diff->{'status'} eq "R" || $diff->{'status'} eq "C") { # renamed or copied
3044                        my %status_name = ('R' => 'moved', 'C' => 'copied');
3045                        my $nstatus = $status_name{$diff->{'status'}};
3046                        my $mode_chng = "";
3047                        if ($diff->{'from_mode'} != $diff->{'to_mode'}) {
3048                                # mode also for directories, so we cannot use $to_mode_str
3049                                $mode_chng = sprintf(", mode: %04o", $to_mode_oct & 0777);
3050                        }
3051                        print "<td>" .
3052                              $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
3053                                                     hash=>$diff->{'to_id'}, file_name=>$diff->{'to_file'}),
3054                                      -class => "list"}, esc_path($diff->{'to_file'})) . "</td>\n" .
3055                              "<td><span class=\"file_status $nstatus\">[$nstatus from " .
3056                              $cgi->a({-href => href(action=>"blob", hash_base=>$parent,
3057                                                     hash=>$diff->{'from_id'}, file_name=>$diff->{'from_file'}),
3058                                      -class => "list"}, esc_path($diff->{'from_file'})) .
3059                              " with " . (int $diff->{'similarity'}) . "% similarity$mode_chng]</span></td>\n" .
3060                              "<td class=\"link\">";
3061                        if ($action eq 'commitdiff') {
3062                                # link to patch
3063                                $patchno++;
3064                                print $cgi->a({-href => "#patch$patchno"}, "patch") .
3065                                      " | ";
3066                        } elsif ($diff->{'to_id'} ne $diff->{'from_id'}) {
3067                                # "commit" view and modified file (not only pure rename or copy)
3068                                print $cgi->a({-href => href(action=>"blobdiff",
3069                                                             hash=>$diff->{'to_id'}, hash_parent=>$diff->{'from_id'},
3070                                                             hash_base=>$hash, hash_parent_base=>$parent,
3071                                                             file_name=>$diff->{'to_file'}, file_parent=>$diff->{'from_file'})},
3072                                              "diff") .
3073                                      " | ";
3074                        }
3075                        print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
3076                                                     hash_base=>$parent, file_name=>$diff->{'to_file'})},
3077                                      "blob") . " | ";
3078                        if ($have_blame) {
3079                                print $cgi->a({-href => href(action=>"blame", hash_base=>$hash,
3080                                                             file_name=>$diff->{'to_file'})},
3081                                              "blame") . " | ";
3082                        }
3083                        print $cgi->a({-href => href(action=>"history", hash_base=>$hash,
3084                                                    file_name=>$diff->{'to_file'})},
3085                                      "history");
3086                        print "</td>\n";
3087
3088                } # we should not encounter Unmerged (U) or Unknown (X) status
3089                print "</tr>\n";
3090        }
3091        print "</tbody>" if $has_header;
3092        print "</table>\n";
3093}
3094
3095sub git_patchset_body {
3096        my ($fd, $difftree, $hash, @hash_parents) = @_;
3097        my ($hash_parent) = $hash_parents[0];
3098
3099        my $patch_idx = 0;
3100        my $patch_number = 0;
3101        my $patch_line;
3102        my $diffinfo;
3103        my (%from, %to);
3104
3105        print "<div class=\"patchset\">\n";
3106
3107        # skip to first patch
3108        while ($patch_line = <$fd>) {
3109                chomp $patch_line;
3110
3111                last if ($patch_line =~ m/^diff /);
3112        }
3113
3114 PATCH:
3115        while ($patch_line) {
3116                my @diff_header;
3117                my ($from_id, $to_id);
3118
3119                # git diff header
3120                #assert($patch_line =~ m/^diff /) if DEBUG;
3121                #assert($patch_line !~ m!$/$!) if DEBUG; # is chomp-ed
3122                $patch_number++;
3123                push @diff_header, $patch_line;
3124
3125                # extended diff header
3126        EXTENDED_HEADER:
3127                while ($patch_line = <$fd>) {
3128                        chomp $patch_line;
3129
3130                        last EXTENDED_HEADER if ($patch_line =~ m/^--- |^diff /);
3131
3132                        if ($patch_line =~ m/^index ([0-9a-fA-F]{40})..([0-9a-fA-F]{40})/) {
3133                                $from_id = $1;
3134                                $to_id   = $2;
3135                        } elsif ($patch_line =~ m/^index ((?:[0-9a-fA-F]{40},)+[0-9a-fA-F]{40})..([0-9a-fA-F]{40})/) {
3136                                $from_id = [ split(',', $1) ];
3137                                $to_id   = $2;
3138                        }
3139
3140                        push @diff_header, $patch_line;
3141                }
3142                my $last_patch_line = $patch_line;
3143
3144                # check if current patch belong to current raw line
3145                # and parse raw git-diff line if needed
3146                if (defined $diffinfo &&
3147                    defined $from_id && defined $to_id &&
3148                    from_ids_eq($diffinfo->{'from_id'}, $from_id) &&
3149                    $diffinfo->{'to_id'} eq $to_id) {
3150                        # this is continuation of a split patch
3151                        print "<div class=\"patch cont\">\n";
3152                } else {
3153                        # advance raw git-diff output if needed
3154                        $patch_idx++ if defined $diffinfo;
3155
3156                        # compact combined diff output can have some patches skipped
3157                        # find which patch (using pathname of result) we are at now
3158                        my $to_name;
3159                        if ($diff_header[0] =~ m!^diff --cc "?(.*)"?$!) {
3160                                $to_name = $1;
3161                        }
3162
3163                        do {
3164                                # read and prepare patch information
3165                                if (ref($difftree->[$patch_idx]) eq "HASH") {
3166                                        # pre-parsed (or generated by hand)
3167                                        $diffinfo = $difftree->[$patch_idx];
3168                                } else {
3169                                        $diffinfo = parse_difftree_raw_line($difftree->[$patch_idx]);
3170                                }
3171
3172                                # check if current raw line has no patch (it got simplified)
3173                                if (defined $to_name && $to_name ne $diffinfo->{'to_file'}) {
3174                                        print "<div class=\"patch\" id=\"patch". ($patch_idx+1) ."\">\n" .
3175                                              format_diff_cc_simplified($diffinfo, @hash_parents) .
3176                                              "</div>\n";  # class="patch"
3177
3178                                        $patch_idx++;
3179                                        $patch_number++;
3180                                }
3181                        } until (!defined $to_name || $to_name eq $diffinfo->{'to_file'} ||
3182                                 $patch_idx > $#$difftree);
3183                        # modifies %from, %to hashes
3184                        parse_from_to_diffinfo($diffinfo, \%from, \%to, @hash_parents);
3185                        if ($diffinfo->{'nparents'}) {
3186                                # combined diff
3187                                $from{'file'} = [];
3188                                $from{'href'} = [];
3189                                fill_from_file_info($diffinfo, @hash_parents)
3190                                        unless exists $diffinfo->{'from_file'};
3191                                for (my $i = 0; $i < $diffinfo->{'nparents'}; $i++) {
3192                                        $from{'file'}[$i] = $diffinfo->{'from_file'}[$i] || $diffinfo->{'to_file'};
3193                                        if ($diffinfo->{'status'}[$i] ne "A") { # not new (added) file
3194                                                $from{'href'}[$i] = href(action=>"blob",
3195                                                                         hash_base=>$hash_parents[$i],
3196                                                                         hash=>$diffinfo->{'from_id'}[$i],
3197                                                                         file_name=>$from{'file'}[$i]);
3198                                        } else {
3199                                                $from{'href'}[$i] = undef;
3200                                        }
3201                                }
3202                        } else {
3203                                $from{'file'} = $diffinfo->{'from_file'} || $diffinfo->{'file'};
3204                                if ($diffinfo->{'status'} ne "A") { # not new (added) file
3205                                        $from{'href'} = href(action=>"blob", hash_base=>$hash_parent,
3206                                                             hash=>$diffinfo->{'from_id'},
3207                                                             file_name=>$from{'file'});
3208                                } else {
3209                                        delete $from{'href'};
3210                                }
3211                        }
3212
3213                        $to{'file'} = $diffinfo->{'to_file'} || $diffinfo->{'file'};
3214                        if (!is_deleted($diffinfo)) { # file exists in result
3215                                $to{'href'} = href(action=>"blob", hash_base=>$hash,
3216                                                   hash=>$diffinfo->{'to_id'},
3217                                                   file_name=>$to{'file'});
3218                        } else {
3219                                delete $to{'href'};
3220                        }
3221                        # this is first patch for raw difftree line with $patch_idx index
3222                        # we index @$difftree array from 0, but number patches from 1
3223                        print "<div class=\"patch\" id=\"patch". ($patch_idx+1) ."\">\n";
3224                }
3225
3226                # print "git diff" header
3227                $patch_line = shift @diff_header;
3228                print format_git_diff_header_line($patch_line, $diffinfo,
3229                                                  \%from, \%to);
3230
3231                # print extended diff header
3232                print "<div class=\"diff extended_header\">\n" if (@diff_header > 0);
3233        EXTENDED_HEADER:
3234                foreach $patch_line (@diff_header) {
3235                        print format_extended_diff_header_line($patch_line, $diffinfo,
3236                                                               \%from, \%to);
3237                }
3238                print "</div>\n"  if (@diff_header > 0); # class="diff extended_header"
3239
3240                # from-file/to-file diff header
3241                $patch_line = $last_patch_line;
3242                if (! $patch_line) {
3243                        print "</div>\n"; # class="patch"
3244                        last PATCH;
3245                }
3246                next PATCH if ($patch_line =~ m/^diff /);
3247                #assert($patch_line =~ m/^---/) if DEBUG;
3248                #assert($patch_line eq $last_patch_line) if DEBUG;
3249
3250                $patch_line = <$fd>;
3251                chomp $patch_line;
3252                #assert($patch_line =~ m/^\+\+\+/) if DEBUG;
3253
3254                print format_diff_from_to_header($last_patch_line, $patch_line,
3255                                                 $diffinfo, \%from, \%to,
3256                                                 @hash_parents);
3257
3258                # the patch itself
3259        LINE:
3260                while ($patch_line = <$fd>) {
3261                        chomp $patch_line;
3262
3263                        next PATCH if ($patch_line =~ m/^diff /);
3264
3265                        print format_diff_line($patch_line, \%from, \%to);
3266                }
3267
3268        } continue {
3269                print "</div>\n"; # class="patch"
3270        }
3271
3272        # for compact combined (--cc) format, with chunk and patch simpliciaction
3273        # patchset might be empty, but there might be unprocessed raw lines
3274        for ($patch_idx++ if $patch_number > 0;
3275             $patch_idx < @$difftree;
3276             $patch_idx++) {
3277                # read and prepare patch information
3278                if (ref($difftree->[$patch_idx]) eq "HASH") {
3279                        # pre-parsed (or generated by hand)
3280                        $diffinfo = $difftree->[$patch_idx];
3281                } else {
3282                        $diffinfo = parse_difftree_raw_line($difftree->[$patch_idx]);
3283                }
3284
3285                # generate anchor for "patch" links in difftree / whatchanged part
3286                print "<div class=\"patch\" id=\"patch". ($patch_idx+1) ."\">\n" .
3287                      format_diff_cc_simplified($diffinfo, @hash_parents) .
3288                      "</div>\n";  # class="patch"
3289
3290                $patch_number++;
3291        }
3292
3293        if ($patch_number == 0) {
3294                if (@hash_parents > 1) {
3295                        print "<div class=\"diff nodifferences\">Trivial merge</div>\n";
3296                } else {
3297                        print "<div class=\"diff nodifferences\">No differences found</div>\n";
3298                }
3299        }
3300
3301        print "</div>\n"; # class="patchset"
3302}
3303
3304# . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3305
3306sub git_project_list_body {
3307        my ($projlist, $order, $from, $to, $extra, $no_header) = @_;
3308
3309        my ($check_forks) = gitweb_check_feature('forks');
3310
3311        my @projects;
3312        foreach my $pr (@$projlist) {
3313                my (@aa) = git_get_last_activity($pr->{'path'});
3314                unless (@aa) {
3315                        next;
3316                }
3317                ($pr->{'age'}, $pr->{'age_string'}) = @aa;
3318                if (!defined $pr->{'descr'}) {
3319                        my $descr = git_get_project_description($pr->{'path'}) || "";
3320                        $pr->{'descr_long'} = to_utf8($descr);
3321                        $pr->{'descr'} = chop_str($descr, $projects_list_description_width, 5);
3322                }
3323                if (!defined $pr->{'owner'}) {
3324                        $pr->{'owner'} = git_get_project_owner("$pr->{'path'}") || "";
3325                }
3326                if ($check_forks) {
3327                        my $pname = $pr->{'path'};
3328                        if (($pname =~ s/\.git$//) &&
3329                            ($pname !~ /\/$/) &&
3330                            (-d "$projectroot/$pname")) {
3331                                $pr->{'forks'} = "-d $projectroot/$pname";
3332                        }
3333                        else {
3334                                $pr->{'forks'} = 0;
3335                        }
3336                }
3337                push @projects, $pr;
3338        }
3339
3340        $order ||= $default_projects_order;
3341        $from = 0 unless defined $from;
3342        $to = $#projects if (!defined $to || $#projects < $to);
3343
3344        print "<table class=\"project_list\">\n";
3345        unless ($no_header) {
3346                print "<tr>\n";
3347                if ($check_forks) {
3348                        print "<th></th>\n";
3349                }
3350                if ($order eq "project") {
3351                        @projects = sort {$a->{'path'} cmp $b->{'path'}} @projects;
3352                        print "<th>Project</th>\n";
3353                } else {
3354                        print "<th>" .
3355                              $cgi->a({-href => href(project=>undef, order=>'project'),
3356                                       -class => "header"}, "Project") .
3357                              "</th>\n";
3358                }
3359                if ($order eq "descr") {
3360                        @projects = sort {$a->{'descr'} cmp $b->{'descr'}} @projects;
3361                        print "<th>Description</th>\n";
3362                } else {
3363                        print "<th>" .
3364                              $cgi->a({-href => href(project=>undef, order=>'descr'),
3365                                       -class => "header"}, "Description") .
3366                              "</th>\n";
3367                }
3368                if ($order eq "owner") {
3369                        @projects = sort {$a->{'owner'} cmp $b->{'owner'}} @projects;
3370                        print "<th>Owner</th>\n";
3371                } else {
3372                        print "<th>" .
3373                              $cgi->a({-href => href(project=>undef, order=>'owner'),
3374                                       -class => "header"}, "Owner") .
3375                              "</th>\n";
3376                }
3377                if ($order eq "age") {
3378                        @projects = sort {$a->{'age'} <=> $b->{'age'}} @projects;
3379                        print "<th>Last Change</th>\n";
3380                } else {
3381                        print "<th>" .
3382                              $cgi->a({-href => href(project=>undef, order=>'age'),
3383                                       -class => "header"}, "Last Change") .
3384                              "</th>\n";
3385                }
3386                print "<th></th>\n" .
3387                      "</tr>\n";
3388        }
3389        my $alternate = 1;
3390        for (my $i = $from; $i <= $to; $i++) {
3391                my $pr = $projects[$i];
3392                if ($alternate) {
3393                        print "<tr class=\"dark\">\n";
3394                } else {
3395                        print "<tr class=\"light\">\n";
3396                }
3397                $alternate ^= 1;
3398                if ($check_forks) {
3399                        print "<td>";
3400                        if ($pr->{'forks'}) {
3401                                print "<!-- $pr->{'forks'} -->\n";
3402                                print $cgi->a({-href => href(project=>$pr->{'path'}, action=>"forks")}, "+");
3403                        }
3404                        print "</td>\n";
3405                }
3406                print "<td>" . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary"),
3407                                        -class => "list"}, esc_html($pr->{'path'})) . "</td>\n" .
3408                      "<td>" . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary"),
3409                                        -class => "list", -title => $pr->{'descr_long'}},
3410                                        esc_html($pr->{'descr'})) . "</td>\n" .
3411                      "<td><i>" . chop_str($pr->{'owner'}, 15) . "</i></td>\n";
3412                print "<td class=\"". age_class($pr->{'age'}) . "\">" .
3413                      (defined $pr->{'age_string'} ? $pr->{'age_string'} : "No commits") . "</td>\n" .
3414                      "<td class=\"link\">" .
3415                      $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary")}, "summary")   . " | " .
3416                      $cgi->a({-href => href(project=>$pr->{'path'}, action=>"shortlog")}, "shortlog") . " | " .
3417                      $cgi->a({-href => href(project=>$pr->{'path'}, action=>"log")}, "log") . " | " .
3418                      $cgi->a({-href => href(project=>$pr->{'path'}, action=>"tree")}, "tree") .
3419                      ($pr->{'forks'} ? " | " . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"forks")}, "forks") : '') .
3420                      "</td>\n" .
3421                      "</tr>\n";
3422        }
3423        if (defined $extra) {
3424                print "<tr>\n";
3425                if ($check_forks) {
3426                        print "<td></td>\n";
3427                }
3428                print "<td colspan=\"5\">$extra</td>\n" .
3429                      "</tr>\n";
3430        }
3431        print "</table>\n";
3432}
3433
3434sub git_shortlog_body {
3435        # uses global variable $project
3436        my ($commitlist, $from, $to, $refs, $extra) = @_;
3437
3438        $from = 0 unless defined $from;
3439        $to = $#{$commitlist} if (!defined $to || $#{$commitlist} < $to);
3440
3441        print "<table class=\"shortlog\" cellspacing=\"0\">\n";
3442        my $alternate = 1;
3443        for (my $i = $from; $i <= $to; $i++) {
3444                my %co = %{$commitlist->[$i]};
3445                my $commit = $co{'id'};
3446                my $ref = format_ref_marker($refs, $commit);
3447                if ($alternate) {
3448                        print "<tr class=\"dark\">\n";
3449                } else {
3450                        print "<tr class=\"light\">\n";
3451                }
3452                $alternate ^= 1;
3453                # git_summary() used print "<td><i>$co{'age_string'}</i></td>\n" .
3454                print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
3455                      "<td><i>" . esc_html(chop_str($co{'author_name'}, 10)) . "</i></td>\n" .
3456                      "<td>";
3457                print format_subject_html($co{'title'}, $co{'title_short'},
3458                                          href(action=>"commit", hash=>$commit), $ref);
3459                print "</td>\n" .
3460                      "<td class=\"link\">" .
3461                      $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") . " | " .
3462                      $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") . " | " .
3463                      $cgi->a({-href => href(action=>"tree", hash=>$commit, hash_base=>$commit)}, "tree");
3464                my $snapshot_links = format_snapshot_links($commit);
3465                if (defined $snapshot_links) {
3466                        print " | " . $snapshot_links;
3467                }
3468                print "</td>\n" .
3469                      "</tr>\n";
3470        }
3471        if (defined $extra) {
3472                print "<tr>\n" .
3473                      "<td colspan=\"4\">$extra</td>\n" .
3474                      "</tr>\n";
3475        }
3476        print "</table>\n";
3477}
3478
3479sub git_history_body {
3480        # Warning: assumes constant type (blob or tree) during history
3481        my ($commitlist, $from, $to, $refs, $hash_base, $ftype, $extra) = @_;
3482
3483        $from = 0 unless defined $from;
3484        $to = $#{$commitlist} unless (defined $to && $to <= $#{$commitlist});
3485
3486        print "<table class=\"history\" cellspacing=\"0\">\n";
3487        my $alternate = 1;
3488        for (my $i = $from; $i <= $to; $i++) {
3489                my %co = %{$commitlist->[$i]};
3490                if (!%co) {
3491                        next;
3492                }
3493                my $commit = $co{'id'};
3494
3495                my $ref = format_ref_marker($refs, $commit);
3496
3497                if ($alternate) {
3498                        print "<tr class=\"dark\">\n";
3499                } else {
3500                        print "<tr class=\"light\">\n";
3501                }
3502                $alternate ^= 1;
3503                print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
3504                      # shortlog uses      chop_str($co{'author_name'}, 10)
3505                      "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 3)) . "</i></td>\n" .
3506                      "<td>";
3507                # originally git_history used chop_str($co{'title'}, 50)
3508                print format_subject_html($co{'title'}, $co{'title_short'},
3509                                          href(action=>"commit", hash=>$commit), $ref);
3510                print "</td>\n" .
3511                      "<td class=\"link\">" .
3512                      $cgi->a({-href => href(action=>$ftype, hash_base=>$commit, file_name=>$file_name)}, $ftype) . " | " .
3513                      $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff");
3514
3515                if ($ftype eq 'blob') {
3516                        my $blob_current = git_get_hash_by_path($hash_base, $file_name);
3517                        my $blob_parent  = git_get_hash_by_path($commit, $file_name);
3518                        if (defined $blob_current && defined $blob_parent &&
3519                                        $blob_current ne $blob_parent) {
3520                                print " | " .
3521                                        $cgi->a({-href => href(action=>"blobdiff",
3522                                                               hash=>$blob_current, hash_parent=>$blob_parent,
3523                                                               hash_base=>$hash_base, hash_parent_base=>$commit,
3524                                                               file_name=>$file_name)},
3525                                                "diff to current");
3526                        }
3527                }
3528                print "</td>\n" .
3529                      "</tr>\n";
3530        }
3531        if (defined $extra) {
3532                print "<tr>\n" .
3533                      "<td colspan=\"4\">$extra</td>\n" .
3534                      "</tr>\n";
3535        }
3536        print "</table>\n";
3537}
3538
3539sub git_tags_body {
3540        # uses global variable $project
3541        my ($taglist, $from, $to, $extra) = @_;
3542        $from = 0 unless defined $from;
3543        $to = $#{$taglist} if (!defined $to || $#{$taglist} < $to);
3544
3545        print "<table class=\"tags\" cellspacing=\"0\">\n";
3546        my $alternate = 1;
3547        for (my $i = $from; $i <= $to; $i++) {
3548                my $entry = $taglist->[$i];
3549                my %tag = %$entry;
3550                my $comment = $tag{'subject'};
3551                my $comment_short;
3552                if (defined $comment) {
3553                        $comment_short = chop_str($comment, 30, 5);
3554                }
3555                if ($alternate) {
3556                        print "<tr class=\"dark\">\n";
3557                } else {
3558                        print "<tr class=\"light\">\n";
3559                }
3560                $alternate ^= 1;
3561                if (defined $tag{'age'}) {
3562                        print "<td><i>$tag{'age'}</i></td>\n";
3563                } else {
3564                        print "<td></td>\n";
3565                }
3566                print "<td>" .
3567                      $cgi->a({-href => href(action=>$tag{'reftype'}, hash=>$tag{'refid'}),
3568                               -class => "list name"}, esc_html($tag{'name'})) .
3569                      "</td>\n" .
3570                      "<td>";
3571                if (defined $comment) {
3572                        print format_subject_html($comment, $comment_short,
3573                                                  href(action=>"tag", hash=>$tag{'id'}));
3574                }
3575                print "</td>\n" .
3576                      "<td class=\"selflink\">";
3577                if ($tag{'type'} eq "tag") {
3578                        print $cgi->a({-href => href(action=>"tag", hash=>$tag{'id'})}, "tag");
3579                } else {
3580                        print "&nbsp;";
3581                }
3582                print "</td>\n" .
3583                      "<td class=\"link\">" . " | " .
3584                      $cgi->a({-href => href(action=>$tag{'reftype'}, hash=>$tag{'refid'})}, $tag{'reftype'});
3585                if ($tag{'reftype'} eq "commit") {
3586                        print " | " . $cgi->a({-href => href(action=>"shortlog", hash=>$tag{'name'})}, "shortlog") .
3587                              " | " . $cgi->a({-href => href(action=>"log", hash=>$tag{'name'})}, "log");
3588                } elsif ($tag{'reftype'} eq "blob") {
3589                        print " | " . $cgi->a({-href => href(action=>"blob_plain", hash=>$tag{'refid'})}, "raw");
3590                }
3591                print "</td>\n" .
3592                      "</tr>";
3593        }
3594        if (defined $extra) {
3595                print "<tr>\n" .
3596                      "<td colspan=\"5\">$extra</td>\n" .
3597                      "</tr>\n";
3598        }
3599        print "</table>\n";
3600}
3601
3602sub git_heads_body {
3603        # uses global variable $project
3604        my ($headlist, $head, $from, $to, $extra) = @_;
3605        $from = 0 unless defined $from;
3606        $to = $#{$headlist} if (!defined $to || $#{$headlist} < $to);
3607
3608        print "<table class=\"heads\" cellspacing=\"0\">\n";
3609        my $alternate = 1;
3610        for (my $i = $from; $i <= $to; $i++) {
3611                my $entry = $headlist->[$i];
3612                my %ref = %$entry;
3613                my $curr = $ref{'id'} eq $head;
3614                if ($alternate) {
3615                        print "<tr class=\"dark\">\n";
3616                } else {
3617                        print "<tr class=\"light\">\n";
3618                }
3619                $alternate ^= 1;
3620                print "<td><i>$ref{'age'}</i></td>\n" .
3621                      ($curr ? "<td class=\"current_head\">" : "<td>") .
3622                      $cgi->a({-href => href(action=>"shortlog", hash=>$ref{'name'}),
3623                               -class => "list name"},esc_html($ref{'name'})) .
3624                      "</td>\n" .
3625                      "<td class=\"link\">" .
3626                      $cgi->a({-href => href(action=>"shortlog", hash=>$ref{'name'})}, "shortlog") . " | " .
3627                      $cgi->a({-href => href(action=>"log", hash=>$ref{'name'})}, "log") . " | " .
3628                      $cgi->a({-href => href(action=>"tree", hash=>$ref{'name'}, hash_base=>$ref{'name'})}, "tree") .
3629                      "</td>\n" .
3630                      "</tr>";
3631        }
3632        if (defined $extra) {
3633                print "<tr>\n" .
3634                      "<td colspan=\"3\">$extra</td>\n" .
3635                      "</tr>\n";
3636        }
3637        print "</table>\n";
3638}
3639
3640sub git_search_grep_body {
3641        my ($commitlist, $from, $to, $extra) = @_;
3642        $from = 0 unless defined $from;
3643        $to = $#{$commitlist} if (!defined $to || $#{$commitlist} < $to);
3644
3645        print "<table class=\"grep\" cellspacing=\"0\">\n";
3646        my $alternate = 1;
3647        for (my $i = $from; $i <= $to; $i++) {
3648                my %co = %{$commitlist->[$i]};
3649                if (!%co) {
3650                        next;
3651                }
3652                my $commit = $co{'id'};
3653                if ($alternate) {
3654                        print "<tr class=\"dark\">\n";
3655                } else {
3656                        print "<tr class=\"light\">\n";
3657                }
3658                $alternate ^= 1;
3659                print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
3660                      "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 5)) . "</i></td>\n" .
3661                      "<td>" .
3662                      $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}), -class => "list subject"},
3663                               esc_html(chop_str($co{'title'}, 50)) . "<br/>");
3664                my $comment = $co{'comment'};
3665                foreach my $line (@$comment) {
3666                        if ($line =~ m/^(.*)($search_regexp)(.*)$/i) {
3667                                my $lead = esc_html($1) || "";
3668                                $lead = chop_str($lead, 30, 10);
3669                                my $match = esc_html($2) || "";
3670                                my $trail = esc_html($3) || "";
3671                                $trail = chop_str($trail, 30, 10);
3672                                my $text = "$lead<span class=\"match\">$match</span>$trail";
3673                                print chop_str($text, 80, 5) . "<br/>\n";
3674                        }
3675                }
3676                print "</td>\n" .
3677                      "<td class=\"link\">" .
3678                      $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})}, "commit") .
3679                      " | " .
3680                      $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$co{'id'})}, "tree");
3681                print "</td>\n" .
3682                      "</tr>\n";
3683        }
3684        if (defined $extra) {
3685                print "<tr>\n" .
3686                      "<td colspan=\"3\">$extra</td>\n" .
3687                      "</tr>\n";
3688        }
3689        print "</table>\n";
3690}
3691
3692## ======================================================================
3693## ======================================================================
3694## actions
3695
3696sub git_project_list {
3697        my $order = $cgi->param('o');
3698        if (defined $order && $order !~ m/none|project|descr|owner|age/) {
3699                die_error(undef, "Unknown order parameter");
3700        }
3701
3702        my @list = git_get_projects_list();
3703        if (!@list) {
3704                die_error(undef, "No projects found");
3705        }
3706
3707        git_header_html();
3708        if (-f $home_text) {
3709                print "<div class=\"index_include\">\n";
3710                open (my $fd, $home_text);
3711                print <$fd>;
3712                close $fd;
3713                print "</div>\n";
3714        }
3715        git_project_list_body(\@list, $order);
3716        git_footer_html();
3717}
3718
3719sub git_forks {
3720        my $order = $cgi->param('o');
3721        if (defined $order && $order !~ m/none|project|descr|owner|age/) {
3722                die_error(undef, "Unknown order parameter");
3723        }
3724
3725        my @list = git_get_projects_list($project);
3726        if (!@list) {
3727                die_error(undef, "No forks found");
3728        }
3729
3730        git_header_html();
3731        git_print_page_nav('','');
3732        git_print_header_div('summary', "$project forks");
3733        git_project_list_body(\@list, $order);
3734        git_footer_html();
3735}
3736
3737sub git_project_index {
3738        my @projects = git_get_projects_list($project);
3739
3740        print $cgi->header(
3741                -type => 'text/plain',
3742                -charset => 'utf-8',
3743                -content_disposition => 'inline; filename="index.aux"');
3744
3745        foreach my $pr (@projects) {
3746                if (!exists $pr->{'owner'}) {
3747                        $pr->{'owner'} = git_get_project_owner("$pr->{'path'}");
3748                }
3749
3750                my ($path, $owner) = ($pr->{'path'}, $pr->{'owner'});
3751                # quote as in CGI::Util::encode, but keep the slash, and use '+' for ' '
3752                $path  =~ s/([^a-zA-Z0-9_.\-\/ ])/sprintf("%%%02X", ord($1))/eg;
3753                $owner =~ s/([^a-zA-Z0-9_.\-\/ ])/sprintf("%%%02X", ord($1))/eg;
3754                $path  =~ s/ /\+/g;
3755                $owner =~ s/ /\+/g;
3756
3757                print "$path $owner\n";
3758        }
3759}
3760
3761sub git_summary {
3762        my $descr = git_get_project_description($project) || "none";
3763        my %co = parse_commit("HEAD");
3764        my %cd = %co ? parse_date($co{'committer_epoch'}, $co{'committer_tz'}) : ();
3765        my $head = $co{'id'};
3766
3767        my $owner = git_get_project_owner($project);
3768
3769        my $refs = git_get_references();
3770        # These get_*_list functions return one more to allow us to see if
3771        # there are more ...
3772        my @taglist  = git_get_tags_list(16);
3773        my @headlist = git_get_heads_list(16);
3774        my @forklist;
3775        my ($check_forks) = gitweb_check_feature('forks');
3776
3777        if ($check_forks) {
3778                @forklist = git_get_projects_list($project);
3779        }
3780
3781        git_header_html();
3782        git_print_page_nav('summary','', $head);
3783
3784        print "<div class=\"title\">&nbsp;</div>\n";
3785        print "<table cellspacing=\"0\">\n" .
3786              "<tr><td>description</td><td>" . esc_html($descr) . "</td></tr>\n" .
3787              "<tr><td>owner</td><td>$owner</td></tr>\n";
3788        if (defined $cd{'rfc2822'}) {
3789                print "<tr><td>last change</td><td>$cd{'rfc2822'}</td></tr>\n";
3790        }
3791
3792        # use per project git URL list in $projectroot/$project/cloneurl
3793        # or make project git URL from git base URL and project name
3794        my $url_tag = "URL";
3795        my @url_list = git_get_project_url_list($project);
3796        @url_list = map { "$_/$project" } @git_base_url_list unless @url_list;
3797        foreach my $git_url (@url_list) {
3798                next unless $git_url;
3799                print "<tr><td>$url_tag</td><td>$git_url</td></tr>\n";
3800                $url_tag = "";
3801        }
3802        print "</table>\n";
3803
3804        if (-s "$projectroot/$project/README.html") {
3805                if (open my $fd, "$projectroot/$project/README.html") {
3806                        print "<div class=\"title\">readme</div>\n";
3807                        print $_ while (<$fd>);
3808                        close $fd;
3809                }
3810        }
3811
3812        # we need to request one more than 16 (0..15) to check if
3813        # those 16 are all
3814        my @commitlist = $head ? parse_commits($head, 17) : ();
3815        if (@commitlist) {
3816                git_print_header_div('shortlog');
3817                git_shortlog_body(\@commitlist, 0, 15, $refs,
3818                                  $#commitlist <=  15 ? undef :
3819                                  $cgi->a({-href => href(action=>"shortlog")}, "..."));
3820        }
3821
3822        if (@taglist) {
3823                git_print_header_div('tags');
3824                git_tags_body(\@taglist, 0, 15,
3825                              $#taglist <=  15 ? undef :
3826                              $cgi->a({-href => href(action=>"tags")}, "..."));
3827        }
3828
3829        if (@headlist) {
3830                git_print_header_div('heads');
3831                git_heads_body(\@headlist, $head, 0, 15,
3832                               $#headlist <= 15 ? undef :
3833                               $cgi->a({-href => href(action=>"heads")}, "..."));
3834        }
3835
3836        if (@forklist) {
3837                git_print_header_div('forks');
3838                git_project_list_body(\@forklist, undef, 0, 15,
3839                                      $#forklist <= 15 ? undef :
3840                                      $cgi->a({-href => href(action=>"forks")}, "..."),
3841                                      'noheader');
3842        }
3843
3844        git_footer_html();
3845}
3846
3847sub git_tag {
3848        my $head = git_get_head_hash($project);
3849        git_header_html();
3850        git_print_page_nav('','', $head,undef,$head);
3851        my %tag = parse_tag($hash);
3852
3853        if (! %tag) {
3854                die_error(undef, "Unknown tag object");
3855        }
3856
3857        git_print_header_div('commit', esc_html($tag{'name'}), $hash);
3858        print "<div class=\"title_text\">\n" .
3859              "<table cellspacing=\"0\">\n" .
3860              "<tr>\n" .
3861              "<td>object</td>\n" .
3862              "<td>" . $cgi->a({-class => "list", -href => href(action=>$tag{'type'}, hash=>$tag{'object'})},
3863                               $tag{'object'}) . "</td>\n" .
3864              "<td class=\"link\">" . $cgi->a({-href => href(action=>$tag{'type'}, hash=>$tag{'object'})},
3865                                              $tag{'type'}) . "</td>\n" .
3866              "</tr>\n";
3867        if (defined($tag{'author'})) {
3868                my %ad = parse_date($tag{'epoch'}, $tag{'tz'});
3869                print "<tr><td>author</td><td>" . esc_html($tag{'author'}) . "</td></tr>\n";
3870                print "<tr><td></td><td>" . $ad{'rfc2822'} .
3871                        sprintf(" (%02d:%02d %s)", $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'}) .
3872                        "</td></tr>\n";
3873        }
3874        print "</table>\n\n" .
3875              "</div>\n";
3876        print "<div class=\"page_body\">";
3877        my $comment = $tag{'comment'};
3878        foreach my $line (@$comment) {
3879                chomp $line;
3880                print esc_html($line, -nbsp=>1) . "<br/>\n";
3881        }
3882        print "</div>\n";
3883        git_footer_html();
3884}
3885
3886sub git_blame2 {
3887        my $fd;
3888        my $ftype;
3889
3890        my ($have_blame) = gitweb_check_feature('blame');
3891        if (!$have_blame) {
3892                die_error('403 Permission denied', "Permission denied");
3893        }
3894        die_error('404 Not Found', "File name not defined") if (!$file_name);
3895        $hash_base ||= git_get_head_hash($project);
3896        die_error(undef, "Couldn't find base commit") unless ($hash_base);
3897        my %co = parse_commit($hash_base)
3898                or die_error(undef, "Reading commit failed");
3899        if (!defined $hash) {
3900                $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
3901                        or die_error(undef, "Error looking up file");
3902        }
3903        $ftype = git_get_type($hash);
3904        if ($ftype !~ "blob") {
3905                die_error('400 Bad Request', "Object is not a blob");
3906        }
3907        open ($fd, "-|", git_cmd(), "blame", '-p', '--',
3908              $file_name, $hash_base)
3909                or die_error(undef, "Open git-blame failed");
3910        git_header_html();
3911        my $formats_nav =
3912                $cgi->a({-href => href(action=>"blob", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
3913                        "blob") .
3914                " | " .
3915                $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
3916                        "history") .
3917                " | " .
3918                $cgi->a({-href => href(action=>"blame", file_name=>$file_name)},
3919                        "HEAD");
3920        git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
3921        git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
3922        git_print_page_path($file_name, $ftype, $hash_base);
3923        my @rev_color = (qw(light2 dark2));
3924        my $num_colors = scalar(@rev_color);
3925        my $current_color = 0;
3926        my $last_rev;
3927        print <<HTML;
3928<div class="page_body">
3929<table class="blame">
3930<tr><th>Commit</th><th>Line</th><th>Data</th></tr>
3931HTML
3932        my %metainfo = ();
3933        while (1) {
3934                $_ = <$fd>;
3935                last unless defined $_;
3936                my ($full_rev, $orig_lineno, $lineno, $group_size) =
3937                    /^([0-9a-f]{40}) (\d+) (\d+)(?: (\d+))?$/;
3938                if (!exists $metainfo{$full_rev}) {
3939                        $metainfo{$full_rev} = {};
3940                }
3941                my $meta = $metainfo{$full_rev};
3942                while (<$fd>) {
3943                        last if (s/^\t//);
3944                        if (/^(\S+) (.*)$/) {
3945                                $meta->{$1} = $2;
3946                        }
3947                }
3948                my $data = $_;
3949                chomp $data;
3950                my $rev = substr($full_rev, 0, 8);
3951                my $author = $meta->{'author'};
3952                my %date = parse_date($meta->{'author-time'},
3953                                      $meta->{'author-tz'});
3954                my $date = $date{'iso-tz'};
3955                if ($group_size) {
3956                        $current_color = ++$current_color % $num_colors;
3957                }
3958                print "<tr class=\"$rev_color[$current_color]\">\n";
3959                if ($group_size) {
3960                        print "<td class=\"sha1\"";
3961                        print " title=\"". esc_html($author) . ", $date\"";
3962                        print " rowspan=\"$group_size\"" if ($group_size > 1);
3963                        print ">";
3964                        print $cgi->a({-href => href(action=>"commit",
3965                                                     hash=>$full_rev,
3966                                                     file_name=>$file_name)},
3967                                      esc_html($rev));
3968                        print "</td>\n";
3969                }
3970                open (my $dd, "-|", git_cmd(), "rev-parse", "$full_rev^")
3971                        or die_error(undef, "Open git-rev-parse failed");
3972                my $parent_commit = <$dd>;
3973                close $dd;
3974                chomp($parent_commit);
3975                my $blamed = href(action => 'blame',
3976                                  file_name => $meta->{'filename'},
3977                                  hash_base => $parent_commit);
3978                print "<td class=\"linenr\">";
3979                print $cgi->a({ -href => "$blamed#l$orig_lineno",
3980                                -id => "l$lineno",
3981                                -class => "linenr" },
3982                              esc_html($lineno));
3983                print "</td>";
3984                print "<td class=\"pre\">" . esc_html($data) . "</td>\n";
3985                print "</tr>\n";
3986        }
3987        print "</table>\n";
3988        print "</div>";
3989        close $fd
3990                or print "Reading blob failed\n";
3991        git_footer_html();
3992}
3993
3994sub git_blame {
3995        my $fd;
3996
3997        my ($have_blame) = gitweb_check_feature('blame');
3998        if (!$have_blame) {
3999                die_error('403 Permission denied', "Permission denied");
4000        }
4001        die_error('404 Not Found', "File name not defined") if (!$file_name);
4002        $hash_base ||= git_get_head_hash($project);
4003        die_error(undef, "Couldn't find base commit") unless ($hash_base);
4004        my %co = parse_commit($hash_base)
4005                or die_error(undef, "Reading commit failed");
4006        if (!defined $hash) {
4007                $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
4008                        or die_error(undef, "Error lookup file");
4009        }
4010        open ($fd, "-|", git_cmd(), "annotate", '-l', '-t', '-r', $file_name, $hash_base)
4011                or die_error(undef, "Open git-annotate failed");
4012        git_header_html();
4013        my $formats_nav =
4014                $cgi->a({-href => href(action=>"blob", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
4015                        "blob") .
4016                " | " .
4017                $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
4018                        "history") .
4019                " | " .
4020                $cgi->a({-href => href(action=>"blame", file_name=>$file_name)},
4021                        "HEAD");
4022        git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
4023        git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
4024        git_print_page_path($file_name, 'blob', $hash_base);
4025        print "<div class=\"page_body\">\n";
4026        print <<HTML;
4027<table class="blame">
4028  <tr>
4029    <th>Commit</th>
4030    <th>Age</th>
4031    <th>Author</th>
4032    <th>Line</th>
4033    <th>Data</th>
4034  </tr>
4035HTML
4036        my @line_class = (qw(light dark));
4037        my $line_class_len = scalar (@line_class);
4038        my $line_class_num = $#line_class;
4039        while (my $line = <$fd>) {
4040                my $long_rev;
4041                my $short_rev;
4042                my $author;
4043                my $time;
4044                my $lineno;
4045                my $data;
4046                my $age;
4047                my $age_str;
4048                my $age_class;
4049
4050                chomp $line;
4051                $line_class_num = ($line_class_num + 1) % $line_class_len;
4052
4053                if ($line =~ m/^([0-9a-fA-F]{40})\t\(\s*([^\t]+)\t(\d+) [+-]\d\d\d\d\t(\d+)\)(.*)$/) {
4054                        $long_rev = $1;
4055                        $author   = $2;
4056                        $time     = $3;
4057                        $lineno   = $4;
4058                        $data     = $5;
4059                } else {
4060                        print qq(  <tr><td colspan="5" class="error">Unable to parse: $line</td></tr>\n);
4061                        next;
4062                }
4063                $short_rev  = substr ($long_rev, 0, 8);
4064                $age        = time () - $time;
4065                $age_str    = age_string ($age);
4066                $age_str    =~ s/ /&nbsp;/g;
4067                $age_class  = age_class($age);
4068                $author     = esc_html ($author);
4069                $author     =~ s/ /&nbsp;/g;
4070
4071                $data = untabify($data);
4072                $data = esc_html ($data);
4073
4074                print <<HTML;
4075  <tr class="$line_class[$line_class_num]">
4076    <td class="sha1"><a href="${\href (action=>"commit", hash=>$long_rev)}" class="text">$short_rev..</a></td>
4077    <td class="$age_class">$age_str</td>
4078    <td>$author</td>
4079    <td class="linenr"><a id="$lineno" href="#$lineno" class="linenr">$lineno</a></td>
4080    <td class="pre">$data</td>
4081  </tr>
4082HTML
4083        } # while (my $line = <$fd>)
4084        print "</table>\n\n";
4085        close $fd
4086                or print "Reading blob failed.\n";
4087        print "</div>";
4088        git_footer_html();
4089}
4090
4091sub git_tags {
4092        my $head = git_get_head_hash($project);
4093        git_header_html();
4094        git_print_page_nav('','', $head,undef,$head);
4095        git_print_header_div('summary', $project);
4096
4097        my @tagslist = git_get_tags_list();
4098        if (@tagslist) {
4099                git_tags_body(\@tagslist);
4100        }
4101        git_footer_html();
4102}
4103
4104sub git_heads {
4105        my $head = git_get_head_hash($project);
4106        git_header_html();
4107        git_print_page_nav('','', $head,undef,$head);
4108        git_print_header_div('summary', $project);
4109
4110        my @headslist = git_get_heads_list();
4111        if (@headslist) {
4112                git_heads_body(\@headslist, $head);
4113        }
4114        git_footer_html();
4115}
4116
4117sub git_blob_plain {
4118        my $expires;
4119
4120        if (!defined $hash) {
4121                if (defined $file_name) {
4122                        my $base = $hash_base || git_get_head_hash($project);
4123                        $hash = git_get_hash_by_path($base, $file_name, "blob")
4124                                or die_error(undef, "Error lookup file");
4125                } else {
4126                        die_error(undef, "No file name defined");
4127                }
4128        } elsif ($hash =~ m/^[0-9a-fA-F]{40}$/) {
4129                # blobs defined by non-textual hash id's can be cached
4130                $expires = "+1d";
4131        }
4132
4133        my $type = shift;
4134        open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
4135                or die_error(undef, "Couldn't cat $file_name, $hash");
4136
4137        $type ||= blob_mimetype($fd, $file_name);
4138
4139        # save as filename, even when no $file_name is given
4140        my $save_as = "$hash";
4141        if (defined $file_name) {
4142                $save_as = $file_name;
4143        } elsif ($type =~ m/^text\//) {
4144                $save_as .= '.txt';
4145        }
4146
4147        print $cgi->header(
4148                -type => "$type",
4149                -expires=>$expires,
4150                -content_disposition => 'inline; filename="' . "$save_as" . '"');
4151        undef $/;
4152        binmode STDOUT, ':raw';
4153        print <$fd>;
4154        binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
4155        $/ = "\n";
4156        close $fd;
4157}
4158
4159sub git_blob {
4160        my $expires;
4161
4162        if (!defined $hash) {
4163                if (defined $file_name) {
4164                        my $base = $hash_base || git_get_head_hash($project);
4165                        $hash = git_get_hash_by_path($base, $file_name, "blob")
4166                                or die_error(undef, "Error lookup file");
4167                } else {
4168                        die_error(undef, "No file name defined");
4169                }
4170        } elsif ($hash =~ m/^[0-9a-fA-F]{40}$/) {
4171                # blobs defined by non-textual hash id's can be cached
4172                $expires = "+1d";
4173        }
4174
4175        my ($have_blame) = gitweb_check_feature('blame');
4176        open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
4177                or die_error(undef, "Couldn't cat $file_name, $hash");
4178        my $mimetype = blob_mimetype($fd, $file_name);
4179        if ($mimetype !~ m!^(?:text/|image/(?:gif|png|jpeg)$)!) {
4180                close $fd;
4181                return git_blob_plain($mimetype);
4182        }
4183        # we can have blame only for text/* mimetype
4184        $have_blame &&= ($mimetype =~ m!^text/!);
4185
4186        git_header_html(undef, $expires);
4187        my $formats_nav = '';
4188        if (defined $hash_base && (my %co = parse_commit($hash_base))) {
4189                if (defined $file_name) {
4190                        if ($have_blame) {
4191                                $formats_nav .=
4192                                        $cgi->a({-href => href(action=>"blame", hash_base=>$hash_base,
4193                                                               hash=>$hash, file_name=>$file_name)},
4194                                                "blame") .
4195                                        " | ";
4196                        }
4197                        $formats_nav .=
4198                                $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
4199                                                       hash=>$hash, file_name=>$file_name)},
4200                                        "history") .
4201                                " | " .
4202                                $cgi->a({-href => href(action=>"blob_plain",
4203                                                       hash=>$hash, file_name=>$file_name)},
4204                                        "raw") .
4205                                " | " .
4206                                $cgi->a({-href => href(action=>"blob",
4207                                                       hash_base=>"HEAD", file_name=>$file_name)},
4208                                        "HEAD");
4209                } else {
4210                        $formats_nav .=
4211                                $cgi->a({-href => href(action=>"blob_plain", hash=>$hash)}, "raw");
4212                }
4213                git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
4214                git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
4215        } else {
4216                print "<div class=\"page_nav\">\n" .
4217                      "<br/><br/></div>\n" .
4218                      "<div class=\"title\">$hash</div>\n";
4219        }
4220        git_print_page_path($file_name, "blob", $hash_base);
4221        print "<div class=\"page_body\">\n";
4222        if ($mimetype =~ m!^text/!) {
4223                my $nr;
4224                while (my $line = <$fd>) {
4225                        chomp $line;
4226                        $nr++;
4227                        $line = untabify($line);
4228                        printf "<div class=\"pre\"><a id=\"l%i\" href=\"#l%i\" class=\"linenr\">%4i</a> %s</div>\n",
4229                               $nr, $nr, $nr, esc_html($line, -nbsp=>1);
4230                }
4231        } elsif ($mimetype =~ m!^image/!) {
4232                print qq!<img type="$mimetype"!;
4233                if ($file_name) {
4234                        print qq! alt="$file_name" title="$file_name"!;
4235                }
4236                print qq! src="! .
4237                      href(action=>"blob_plain", hash=>$hash,
4238                           hash_base=>$hash_base, file_name=>$file_name) .
4239                      qq!" />\n!;
4240        }
4241        close $fd
4242                or print "Reading blob failed.\n";
4243        print "</div>";
4244        git_footer_html();
4245}
4246
4247sub git_tree {
4248        if (!defined $hash_base) {
4249                $hash_base = "HEAD";
4250        }
4251        if (!defined $hash) {
4252                if (defined $file_name) {
4253                        $hash = git_get_hash_by_path($hash_base, $file_name, "tree");
4254                } else {
4255                        $hash = $hash_base;
4256                }
4257        }
4258        $/ = "\0";
4259        open my $fd, "-|", git_cmd(), "ls-tree", '-z', $hash
4260                or die_error(undef, "Open git-ls-tree failed");
4261        my @entries = map { chomp; $_ } <$fd>;
4262        close $fd or die_error(undef, "Reading tree failed");
4263        $/ = "\n";
4264
4265        my $refs = git_get_references();
4266        my $ref = format_ref_marker($refs, $hash_base);
4267        git_header_html();
4268        my $basedir = '';
4269        my ($have_blame) = gitweb_check_feature('blame');
4270        if (defined $hash_base && (my %co = parse_commit($hash_base))) {
4271                my @views_nav = ();
4272                if (defined $file_name) {
4273                        push @views_nav,
4274                                $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
4275                                                       hash=>$hash, file_name=>$file_name)},
4276                                        "history"),
4277                                $cgi->a({-href => href(action=>"tree",
4278                                                       hash_base=>"HEAD", file_name=>$file_name)},
4279                                        "HEAD"),
4280                }
4281                my $snapshot_links = format_snapshot_links($hash);
4282                if (defined $snapshot_links) {
4283                        # FIXME: Should be available when we have no hash base as well.
4284                        push @views_nav, $snapshot_links;
4285                }
4286                git_print_page_nav('tree','', $hash_base, undef, undef, join(' | ', @views_nav));
4287                git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash_base);
4288        } else {
4289                undef $hash_base;
4290                print "<div class=\"page_nav\">\n";
4291                print "<br/><br/></div>\n";
4292                print "<div class=\"title\">$hash</div>\n";
4293        }
4294        if (defined $file_name) {
4295                $basedir = $file_name;
4296                if ($basedir ne '' && substr($basedir, -1) ne '/') {
4297                        $basedir .= '/';
4298                }
4299        }
4300        git_print_page_path($file_name, 'tree', $hash_base);
4301        print "<div class=\"page_body\">\n";
4302        print "<table cellspacing=\"0\">\n";
4303        my $alternate = 1;
4304        # '..' (top directory) link if possible
4305        if (defined $hash_base &&
4306            defined $file_name && $file_name =~ m![^/]+$!) {
4307                if ($alternate) {
4308                        print "<tr class=\"dark\">\n";
4309                } else {
4310                        print "<tr class=\"light\">\n";
4311                }
4312                $alternate ^= 1;
4313
4314                my $up = $file_name;
4315                $up =~ s!/?[^/]+$!!;
4316                undef $up unless $up;
4317                # based on git_print_tree_entry
4318                print '<td class="mode">' . mode_str('040000') . "</td>\n";
4319                print '<td class="list">';
4320                print $cgi->a({-href => href(action=>"tree", hash_base=>$hash_base,
4321                                             file_name=>$up)},
4322                              "..");
4323                print "</td>\n";
4324                print "<td class=\"link\"></td>\n";
4325
4326                print "</tr>\n";
4327        }
4328        foreach my $line (@entries) {
4329                my %t = parse_ls_tree_line($line, -z => 1);
4330
4331                if ($alternate) {
4332                        print "<tr class=\"dark\">\n";
4333                } else {
4334                        print "<tr class=\"light\">\n";
4335                }
4336                $alternate ^= 1;
4337
4338                git_print_tree_entry(\%t, $basedir, $hash_base, $have_blame);
4339
4340                print "</tr>\n";
4341        }
4342        print "</table>\n" .
4343              "</div>";
4344        git_footer_html();
4345}
4346
4347sub git_snapshot {
4348        my @supported_fmts = gitweb_check_feature('snapshot');
4349        @supported_fmts = filter_snapshot_fmts(@supported_fmts);
4350
4351        my $format = $cgi->param('sf');
4352        if (!@supported_fmts) {
4353                die_error('403 Permission denied', "Permission denied");
4354        }
4355        # default to first supported snapshot format
4356        $format ||= $supported_fmts[0];
4357        if ($format !~ m/^[a-z0-9]+$/) {
4358                die_error(undef, "Invalid snapshot format parameter");
4359        } elsif (!exists($known_snapshot_formats{$format})) {
4360                die_error(undef, "Unknown snapshot format");
4361        } elsif (!grep($_ eq $format, @supported_fmts)) {
4362                die_error(undef, "Unsupported snapshot format");
4363        }
4364
4365        if (!defined $hash) {
4366                $hash = git_get_head_hash($project);
4367        }
4368
4369        my $git_command = git_cmd_str();
4370        my $name = $project;
4371        $name =~ s,([^/])/*\.git$,$1,;
4372        $name = basename($name);
4373        my $filename = to_utf8($name);
4374        $name =~ s/\047/\047\\\047\047/g;
4375        my $cmd;
4376        $filename .= "-$hash$known_snapshot_formats{$format}{'suffix'}";
4377        $cmd = "$git_command archive " .
4378                "--format=$known_snapshot_formats{$format}{'format'} " .
4379                "--prefix=\'$name\'/ $hash";
4380        if (exists $known_snapshot_formats{$format}{'compressor'}) {
4381                $cmd .= ' | ' . join ' ', @{$known_snapshot_formats{$format}{'compressor'}};
4382        }
4383
4384        print $cgi->header(
4385                -type => $known_snapshot_formats{$format}{'type'},
4386                -content_disposition => 'inline; filename="' . "$filename" . '"',
4387                -status => '200 OK');
4388
4389        open my $fd, "-|", $cmd
4390                or die_error(undef, "Execute git-archive failed");
4391        binmode STDOUT, ':raw';
4392        print <$fd>;
4393        binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
4394        close $fd;
4395}
4396
4397sub git_log {
4398        my $head = git_get_head_hash($project);
4399        if (!defined $hash) {
4400                $hash = $head;
4401        }
4402        if (!defined $page) {
4403                $page = 0;
4404        }
4405        my $refs = git_get_references();
4406
4407        my @commitlist = parse_commits($hash, 101, (100 * $page));
4408
4409        my $paging_nav = format_paging_nav('log', $hash, $head, $page, (100 * ($page+1)));
4410
4411        git_header_html();
4412        git_print_page_nav('log','', $hash,undef,undef, $paging_nav);
4413
4414        if (!@commitlist) {
4415                my %co = parse_commit($hash);
4416
4417                git_print_header_div('summary', $project);
4418                print "<div class=\"page_body\"> Last change $co{'age_string'}.<br/><br/></div>\n";
4419        }
4420        my $to = ($#commitlist >= 99) ? (99) : ($#commitlist);
4421        for (my $i = 0; $i <= $to; $i++) {
4422                my %co = %{$commitlist[$i]};
4423                next if !%co;
4424                my $commit = $co{'id'};
4425                my $ref = format_ref_marker($refs, $commit);
4426                my %ad = parse_date($co{'author_epoch'});
4427                git_print_header_div('commit',
4428                               "<span class=\"age\">$co{'age_string'}</span>" .
4429                               esc_html($co{'title'}) . $ref,
4430                               $commit);
4431                print "<div class=\"title_text\">\n" .
4432                      "<div class=\"log_link\">\n" .
4433                      $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") .
4434                      " | " .
4435                      $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") .
4436                      " | " .
4437                      $cgi->a({-href => href(action=>"tree", hash=>$commit, hash_base=>$commit)}, "tree") .
4438                      "<br/>\n" .
4439                      "</div>\n" .
4440                      "<i>" . esc_html($co{'author_name'}) .  " [$ad{'rfc2822'}]</i><br/>\n" .
4441                      "</div>\n";
4442
4443                print "<div class=\"log_body\">\n";
4444                git_print_log($co{'comment'}, -final_empty_line=> 1);
4445                print "</div>\n";
4446        }
4447        if ($#commitlist >= 100) {
4448                print "<div class=\"page_nav\">\n";
4449                print $cgi->a({-href => href(action=>"log", hash=>$hash, page=>$page+1),
4450                               -accesskey => "n", -title => "Alt-n"}, "next");
4451                print "</div>\n";
4452        }
4453        git_footer_html();
4454}
4455
4456sub git_commit {
4457        $hash ||= $hash_base || "HEAD";
4458        my %co = parse_commit($hash);
4459        if (!%co) {
4460                die_error(undef, "Unknown commit object");
4461        }
4462        my %ad = parse_date($co{'author_epoch'}, $co{'author_tz'});
4463        my %cd = parse_date($co{'committer_epoch'}, $co{'committer_tz'});
4464
4465        my $parent  = $co{'parent'};
4466        my $parents = $co{'parents'}; # listref
4467
4468        # we need to prepare $formats_nav before any parameter munging
4469        my $formats_nav;
4470        if (!defined $parent) {
4471                # --root commitdiff
4472                $formats_nav .= '(initial)';
4473        } elsif (@$parents == 1) {
4474                # single parent commit
4475                $formats_nav .=
4476                        '(parent: ' .
4477                        $cgi->a({-href => href(action=>"commit",
4478                                               hash=>$parent)},
4479                                esc_html(substr($parent, 0, 7))) .
4480                        ')';
4481        } else {
4482                # merge commit
4483                $formats_nav .=
4484                        '(merge: ' .
4485                        join(' ', map {
4486                                $cgi->a({-href => href(action=>"commit",
4487                                                       hash=>$_)},
4488                                        esc_html(substr($_, 0, 7)));
4489                        } @$parents ) .
4490                        ')';
4491        }
4492
4493        if (!defined $parent) {
4494                $parent = "--root";
4495        }
4496        my @difftree;
4497        open my $fd, "-|", git_cmd(), "diff-tree", '-r', "--no-commit-id",
4498                @diff_opts,
4499                (@$parents <= 1 ? $parent : '-c'),
4500                $hash, "--"
4501                or die_error(undef, "Open git-diff-tree failed");
4502        @difftree = map { chomp; $_ } <$fd>;
4503        close $fd or die_error(undef, "Reading git-diff-tree failed");
4504
4505        # non-textual hash id's can be cached
4506        my $expires;
4507        if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
4508                $expires = "+1d";
4509        }
4510        my $refs = git_get_references();
4511        my $ref = format_ref_marker($refs, $co{'id'});
4512
4513        git_header_html(undef, $expires);
4514        git_print_page_nav('commit', '',
4515                           $hash, $co{'tree'}, $hash,
4516                           $formats_nav);
4517
4518        if (defined $co{'parent'}) {
4519                git_print_header_div('commitdiff', esc_html($co{'title'}) . $ref, $hash);
4520        } else {
4521                git_print_header_div('tree', esc_html($co{'title'}) . $ref, $co{'tree'}, $hash);
4522        }
4523        print "<div class=\"title_text\">\n" .
4524              "<table cellspacing=\"0\">\n";
4525        print "<tr><td>author</td><td>" . esc_html($co{'author'}) . "</td></tr>\n".
4526              "<tr>" .
4527              "<td></td><td> $ad{'rfc2822'}";
4528        if ($ad{'hour_local'} < 6) {
4529                printf(" (<span class=\"atnight\">%02d:%02d</span> %s)",
4530                       $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
4531        } else {
4532                printf(" (%02d:%02d %s)",
4533                       $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
4534        }
4535        print "</td>" .
4536              "</tr>\n";
4537        print "<tr><td>committer</td><td>" . esc_html($co{'committer'}) . "</td></tr>\n";
4538        print "<tr><td></td><td> $cd{'rfc2822'}" .
4539              sprintf(" (%02d:%02d %s)", $cd{'hour_local'}, $cd{'minute_local'}, $cd{'tz_local'}) .
4540              "</td></tr>\n";
4541        print "<tr><td>commit</td><td class=\"sha1\">$co{'id'}</td></tr>\n";
4542        print "<tr>" .
4543              "<td>tree</td>" .
4544              "<td class=\"sha1\">" .
4545              $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash),
4546                       class => "list"}, $co{'tree'}) .
4547              "</td>" .
4548              "<td class=\"link\">" .
4549              $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash)},
4550                      "tree");
4551        my $snapshot_links = format_snapshot_links($hash);
4552        if (defined $snapshot_links) {
4553                print " | " . $snapshot_links;
4554        }
4555        print "</td>" .
4556              "</tr>\n";
4557
4558        foreach my $par (@$parents) {
4559                print "<tr>" .
4560                      "<td>parent</td>" .
4561                      "<td class=\"sha1\">" .
4562                      $cgi->a({-href => href(action=>"commit", hash=>$par),
4563                               class => "list"}, $par) .
4564                      "</td>" .
4565                      "<td class=\"link\">" .
4566                      $cgi->a({-href => href(action=>"commit", hash=>$par)}, "commit") .
4567                      " | " .
4568                      $cgi->a({-href => href(action=>"commitdiff", hash=>$hash, hash_parent=>$par)}, "diff") .
4569                      "</td>" .
4570                      "</tr>\n";
4571        }
4572        print "</table>".
4573              "</div>\n";
4574
4575        print "<div class=\"page_body\">\n";
4576        git_print_log($co{'comment'});
4577        print "</div>\n";
4578
4579        git_difftree_body(\@difftree, $hash, @$parents);
4580
4581        git_footer_html();
4582}
4583
4584sub git_object {
4585        # object is defined by:
4586        # - hash or hash_base alone
4587        # - hash_base and file_name
4588        my $type;
4589
4590        # - hash or hash_base alone
4591        if ($hash || ($hash_base && !defined $file_name)) {
4592                my $object_id = $hash || $hash_base;
4593
4594                my $git_command = git_cmd_str();
4595                open my $fd, "-|", "$git_command cat-file -t $object_id 2>/dev/null"
4596                        or die_error('404 Not Found', "Object does not exist");
4597                $type = <$fd>;
4598                chomp $type;
4599                close $fd
4600                        or die_error('404 Not Found', "Object does not exist");
4601
4602        # - hash_base and file_name
4603        } elsif ($hash_base && defined $file_name) {
4604                $file_name =~ s,/+$,,;
4605
4606                system(git_cmd(), "cat-file", '-e', $hash_base) == 0
4607                        or die_error('404 Not Found', "Base object does not exist");
4608
4609                # here errors should not hapen
4610                open my $fd, "-|", git_cmd(), "ls-tree", $hash_base, "--", $file_name
4611                        or die_error(undef, "Open git-ls-tree failed");
4612                my $line = <$fd>;
4613                close $fd;
4614
4615                #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
4616                unless ($line && $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t/) {
4617                        die_error('404 Not Found', "File or directory for given base does not exist");
4618                }
4619                $type = $2;
4620                $hash = $3;
4621        } else {
4622                die_error('404 Not Found', "Not enough information to find object");
4623        }
4624
4625        print $cgi->redirect(-uri => href(action=>$type, -full=>1,
4626                                          hash=>$hash, hash_base=>$hash_base,
4627                                          file_name=>$file_name),
4628                             -status => '302 Found');
4629}
4630
4631sub git_blobdiff {
4632        my $format = shift || 'html';
4633
4634        my $fd;
4635        my @difftree;
4636        my %diffinfo;
4637        my $expires;
4638
4639        # preparing $fd and %diffinfo for git_patchset_body
4640        # new style URI
4641        if (defined $hash_base && defined $hash_parent_base) {
4642                if (defined $file_name) {
4643                        # read raw output
4644                        open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4645                                $hash_parent_base, $hash_base,
4646                                "--", (defined $file_parent ? $file_parent : ()), $file_name
4647                                or die_error(undef, "Open git-diff-tree failed");
4648                        @difftree = map { chomp; $_ } <$fd>;
4649                        close $fd
4650                                or die_error(undef, "Reading git-diff-tree failed");
4651                        @difftree
4652                                or die_error('404 Not Found', "Blob diff not found");
4653
4654                } elsif (defined $hash &&
4655                         $hash =~ /[0-9a-fA-F]{40}/) {
4656                        # try to find filename from $hash
4657
4658                        # read filtered raw output
4659                        open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4660                                $hash_parent_base, $hash_base, "--"
4661                                or die_error(undef, "Open git-diff-tree failed");
4662                        @difftree =
4663                                # ':100644 100644 03b21826... 3b93d5e7... M     ls-files.c'
4664                                # $hash == to_id
4665                                grep { /^:[0-7]{6} [0-7]{6} [0-9a-fA-F]{40} $hash/ }
4666                                map { chomp; $_ } <$fd>;
4667                        close $fd
4668                                or die_error(undef, "Reading git-diff-tree failed");
4669                        @difftree
4670                                or die_error('404 Not Found', "Blob diff not found");
4671
4672                } else {
4673                        die_error('404 Not Found', "Missing one of the blob diff parameters");
4674                }
4675
4676                if (@difftree > 1) {
4677                        die_error('404 Not Found', "Ambiguous blob diff specification");
4678                }
4679
4680                %diffinfo = parse_difftree_raw_line($difftree[0]);
4681                $file_parent ||= $diffinfo{'from_file'} || $file_name || $diffinfo{'file'};
4682                $file_name   ||= $diffinfo{'to_file'}   || $diffinfo{'file'};
4683
4684                $hash_parent ||= $diffinfo{'from_id'};
4685                $hash        ||= $diffinfo{'to_id'};
4686
4687                # non-textual hash id's can be cached
4688                if ($hash_base =~ m/^[0-9a-fA-F]{40}$/ &&
4689                    $hash_parent_base =~ m/^[0-9a-fA-F]{40}$/) {
4690                        $expires = '+1d';
4691                }
4692
4693                # open patch output
4694                open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4695                        '-p', ($format eq 'html' ? "--full-index" : ()),
4696                        $hash_parent_base, $hash_base,
4697                        "--", (defined $file_parent ? $file_parent : ()), $file_name
4698                        or die_error(undef, "Open git-diff-tree failed");
4699        }
4700
4701        # old/legacy style URI
4702        if (!%diffinfo && # if new style URI failed
4703            defined $hash && defined $hash_parent) {
4704                # fake git-diff-tree raw output
4705                $diffinfo{'from_mode'} = $diffinfo{'to_mode'} = "blob";
4706                $diffinfo{'from_id'} = $hash_parent;
4707                $diffinfo{'to_id'}   = $hash;
4708                if (defined $file_name) {
4709                        if (defined $file_parent) {
4710                                $diffinfo{'status'} = '2';
4711                                $diffinfo{'from_file'} = $file_parent;
4712                                $diffinfo{'to_file'}   = $file_name;
4713                        } else { # assume not renamed
4714                                $diffinfo{'status'} = '1';
4715                                $diffinfo{'from_file'} = $file_name;
4716                                $diffinfo{'to_file'}   = $file_name;
4717                        }
4718                } else { # no filename given
4719                        $diffinfo{'status'} = '2';
4720                        $diffinfo{'from_file'} = $hash_parent;
4721                        $diffinfo{'to_file'}   = $hash;
4722                }
4723
4724                # non-textual hash id's can be cached
4725                if ($hash =~ m/^[0-9a-fA-F]{40}$/ &&
4726                    $hash_parent =~ m/^[0-9a-fA-F]{40}$/) {
4727                        $expires = '+1d';
4728                }
4729
4730                # open patch output
4731                open $fd, "-|", git_cmd(), "diff", @diff_opts,
4732                        '-p', ($format eq 'html' ? "--full-index" : ()),
4733                        $hash_parent, $hash, "--"
4734                        or die_error(undef, "Open git-diff failed");
4735        } else  {
4736                die_error('404 Not Found', "Missing one of the blob diff parameters")
4737                        unless %diffinfo;
4738        }
4739
4740        # header
4741        if ($format eq 'html') {
4742                my $formats_nav =
4743                        $cgi->a({-href => href(action=>"blobdiff_plain",
4744                                               hash=>$hash, hash_parent=>$hash_parent,
4745                                               hash_base=>$hash_base, hash_parent_base=>$hash_parent_base,
4746                                               file_name=>$file_name, file_parent=>$file_parent)},
4747                                "raw");
4748                git_header_html(undef, $expires);
4749                if (defined $hash_base && (my %co = parse_commit($hash_base))) {
4750                        git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
4751                        git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
4752                } else {
4753                        print "<div class=\"page_nav\"><br/>$formats_nav<br/></div>\n";
4754                        print "<div class=\"title\">$hash vs $hash_parent</div>\n";
4755                }
4756                if (defined $file_name) {
4757                        git_print_page_path($file_name, "blob", $hash_base);
4758                } else {
4759                        print "<div class=\"page_path\"></div>\n";
4760                }
4761
4762        } elsif ($format eq 'plain') {
4763                print $cgi->header(
4764                        -type => 'text/plain',
4765                        -charset => 'utf-8',
4766                        -expires => $expires,
4767                        -content_disposition => 'inline; filename="' . "$file_name" . '.patch"');
4768
4769                print "X-Git-Url: " . $cgi->self_url() . "\n\n";
4770
4771        } else {
4772                die_error(undef, "Unknown blobdiff format");
4773        }
4774
4775        # patch
4776        if ($format eq 'html') {
4777                print "<div class=\"page_body\">\n";
4778
4779                git_patchset_body($fd, [ \%diffinfo ], $hash_base, $hash_parent_base);
4780                close $fd;
4781
4782                print "</div>\n"; # class="page_body"
4783                git_footer_html();
4784
4785        } else {
4786                while (my $line = <$fd>) {
4787                        $line =~ s!a/($hash|$hash_parent)!'a/'.esc_path($diffinfo{'from_file'})!eg;
4788                        $line =~ s!b/($hash|$hash_parent)!'b/'.esc_path($diffinfo{'to_file'})!eg;
4789
4790                        print $line;
4791
4792                        last if $line =~ m!^\+\+\+!;
4793                }
4794                local $/ = undef;
4795                print <$fd>;
4796                close $fd;
4797        }
4798}
4799
4800sub git_blobdiff_plain {
4801        git_blobdiff('plain');
4802}
4803
4804sub git_commitdiff {
4805        my $format = shift || 'html';
4806        $hash ||= $hash_base || "HEAD";
4807        my %co = parse_commit($hash);
4808        if (!%co) {
4809                die_error(undef, "Unknown commit object");
4810        }
4811
4812        # choose format for commitdiff for merge
4813        if (! defined $hash_parent && @{$co{'parents'}} > 1) {
4814                $hash_parent = '--cc';
4815        }
4816        # we need to prepare $formats_nav before almost any parameter munging
4817        my $formats_nav;
4818        if ($format eq 'html') {
4819                $formats_nav =
4820                        $cgi->a({-href => href(action=>"commitdiff_plain",
4821                                               hash=>$hash, hash_parent=>$hash_parent)},
4822                                "raw");
4823
4824                if (defined $hash_parent &&
4825                    $hash_parent ne '-c' && $hash_parent ne '--cc') {
4826                        # commitdiff with two commits given
4827                        my $hash_parent_short = $hash_parent;
4828                        if ($hash_parent =~ m/^[0-9a-fA-F]{40}$/) {
4829                                $hash_parent_short = substr($hash_parent, 0, 7);
4830                        }
4831                        $formats_nav .=
4832                                ' (from';
4833                        for (my $i = 0; $i < @{$co{'parents'}}; $i++) {
4834                                if ($co{'parents'}[$i] eq $hash_parent) {
4835                                        $formats_nav .= ' parent ' . ($i+1);
4836                                        last;
4837                                }
4838                        }
4839                        $formats_nav .= ': ' .
4840                                $cgi->a({-href => href(action=>"commitdiff",
4841                                                       hash=>$hash_parent)},
4842                                        esc_html($hash_parent_short)) .
4843                                ')';
4844                } elsif (!$co{'parent'}) {
4845                        # --root commitdiff
4846                        $formats_nav .= ' (initial)';
4847                } elsif (scalar @{$co{'parents'}} == 1) {
4848                        # single parent commit
4849                        $formats_nav .=
4850                                ' (parent: ' .
4851                                $cgi->a({-href => href(action=>"commitdiff",
4852                                                       hash=>$co{'parent'})},
4853                                        esc_html(substr($co{'parent'}, 0, 7))) .
4854                                ')';
4855                } else {
4856                        # merge commit
4857                        if ($hash_parent eq '--cc') {
4858                                $formats_nav .= ' | ' .
4859                                        $cgi->a({-href => href(action=>"commitdiff",
4860                                                               hash=>$hash, hash_parent=>'-c')},
4861                                                'combined');
4862                        } else { # $hash_parent eq '-c'
4863                                $formats_nav .= ' | ' .
4864                                        $cgi->a({-href => href(action=>"commitdiff",
4865                                                               hash=>$hash, hash_parent=>'--cc')},
4866                                                'compact');
4867                        }
4868                        $formats_nav .=
4869                                ' (merge: ' .
4870                                join(' ', map {
4871                                        $cgi->a({-href => href(action=>"commitdiff",
4872                                                               hash=>$_)},
4873                                                esc_html(substr($_, 0, 7)));
4874                                } @{$co{'parents'}} ) .
4875                                ')';
4876                }
4877        }
4878
4879        my $hash_parent_param = $hash_parent;
4880        if (!defined $hash_parent_param) {
4881                # --cc for multiple parents, --root for parentless
4882                $hash_parent_param =
4883                        @{$co{'parents'}} > 1 ? '--cc' : $co{'parent'} || '--root';
4884        }
4885
4886        # read commitdiff
4887        my $fd;
4888        my @difftree;
4889        if ($format eq 'html') {
4890                open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4891                        "--no-commit-id", "--patch-with-raw", "--full-index",
4892                        $hash_parent_param, $hash, "--"
4893                        or die_error(undef, "Open git-diff-tree failed");
4894
4895                while (my $line = <$fd>) {
4896                        chomp $line;
4897                        # empty line ends raw part of diff-tree output
4898                        last unless $line;
4899                        push @difftree, scalar parse_difftree_raw_line($line);
4900                }
4901
4902        } elsif ($format eq 'plain') {
4903                open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4904                        '-p', $hash_parent_param, $hash, "--"
4905                        or die_error(undef, "Open git-diff-tree failed");
4906
4907        } else {
4908                die_error(undef, "Unknown commitdiff format");
4909        }
4910
4911        # non-textual hash id's can be cached
4912        my $expires;
4913        if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
4914                $expires = "+1d";
4915        }
4916
4917        # write commit message
4918        if ($format eq 'html') {
4919                my $refs = git_get_references();
4920                my $ref = format_ref_marker($refs, $co{'id'});
4921
4922                git_header_html(undef, $expires);
4923                git_print_page_nav('commitdiff','', $hash,$co{'tree'},$hash, $formats_nav);
4924                git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash);
4925                git_print_authorship(\%co);
4926                print "<div class=\"page_body\">\n";
4927                if (@{$co{'comment'}} > 1) {
4928                        print "<div class=\"log\">\n";
4929                        git_print_log($co{'comment'}, -final_empty_line=> 1, -remove_title => 1);
4930                        print "</div>\n"; # class="log"
4931                }
4932
4933        } elsif ($format eq 'plain') {
4934                my $refs = git_get_references("tags");
4935                my $tagname = git_get_rev_name_tags($hash);
4936                my $filename = basename($project) . "-$hash.patch";
4937
4938                print $cgi->header(
4939                        -type => 'text/plain',
4940                        -charset => 'utf-8',
4941                        -expires => $expires,
4942                        -content_disposition => 'inline; filename="' . "$filename" . '"');
4943                my %ad = parse_date($co{'author_epoch'}, $co{'author_tz'});
4944                print <<TEXT;
4945From: $co{'author'}
4946Date: $ad{'rfc2822'} ($ad{'tz_local'})
4947Subject: $co{'title'}
4948TEXT
4949                print "X-Git-Tag: $tagname\n" if $tagname;
4950                print "X-Git-Url: " . $cgi->self_url() . "\n\n";
4951
4952                foreach my $line (@{$co{'comment'}}) {
4953                        print "$line\n";
4954                }
4955                print "---\n\n";
4956        }
4957
4958        # write patch
4959        if ($format eq 'html') {
4960                my $use_parents = !defined $hash_parent ||
4961                        $hash_parent eq '-c' || $hash_parent eq '--cc';
4962                git_difftree_body(\@difftree, $hash,
4963                                  $use_parents ? @{$co{'parents'}} : $hash_parent);
4964                print "<br/>\n";
4965
4966                git_patchset_body($fd, \@difftree, $hash,
4967                                  $use_parents ? @{$co{'parents'}} : $hash_parent);
4968                close $fd;
4969                print "</div>\n"; # class="page_body"
4970                git_footer_html();
4971
4972        } elsif ($format eq 'plain') {
4973                local $/ = undef;
4974                print <$fd>;
4975                close $fd
4976                        or print "Reading git-diff-tree failed\n";
4977        }
4978}
4979
4980sub git_commitdiff_plain {
4981        git_commitdiff('plain');
4982}
4983
4984sub git_history {
4985        if (!defined $hash_base) {
4986                $hash_base = git_get_head_hash($project);
4987        }
4988        if (!defined $page) {
4989                $page = 0;
4990        }
4991        my $ftype;
4992        my %co = parse_commit($hash_base);
4993        if (!%co) {
4994                die_error(undef, "Unknown commit object");
4995        }
4996
4997        my $refs = git_get_references();
4998        my $limit = sprintf("--max-count=%i", (100 * ($page+1)));
4999
5000        if (!defined $hash && defined $file_name) {
5001                $hash = git_get_hash_by_path($hash_base, $file_name);
5002        }
5003        if (defined $hash) {
5004                $ftype = git_get_type($hash);
5005        }
5006
5007        my @commitlist = parse_commits($hash_base, 101, (100 * $page), "--full-history", $file_name);
5008
5009        my $paging_nav = '';
5010        if ($page > 0) {
5011                $paging_nav .=
5012                        $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
5013                                               file_name=>$file_name)},
5014                                "first");
5015                $paging_nav .= " &sdot; " .
5016                        $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
5017                                               file_name=>$file_name, page=>$page-1),
5018                                 -accesskey => "p", -title => "Alt-p"}, "prev");
5019        } else {
5020                $paging_nav .= "first";
5021                $paging_nav .= " &sdot; prev";
5022        }
5023        if ($#commitlist >= 100) {
5024                $paging_nav .= " &sdot; " .
5025                        $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
5026                                               file_name=>$file_name, page=>$page+1),
5027                                 -accesskey => "n", -title => "Alt-n"}, "next");
5028        } else {
5029                $paging_nav .= " &sdot; next";
5030        }
5031        my $next_link = '';
5032        if ($#commitlist >= 100) {
5033                $next_link =
5034                        $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
5035                                               file_name=>$file_name, page=>$page+1),
5036                                 -accesskey => "n", -title => "Alt-n"}, "next");
5037        }
5038
5039        git_header_html();
5040        git_print_page_nav('history','', $hash_base,$co{'tree'},$hash_base, $paging_nav);
5041        git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
5042        git_print_page_path($file_name, $ftype, $hash_base);
5043
5044        git_history_body(\@commitlist, 0, 99,
5045                         $refs, $hash_base, $ftype, $next_link);
5046
5047        git_footer_html();
5048}
5049
5050sub git_search {
5051        my ($have_search) = gitweb_check_feature('search');
5052        if (!$have_search) {
5053                die_error('403 Permission denied', "Permission denied");
5054        }
5055        if (!defined $searchtext) {
5056                die_error(undef, "Text field empty");
5057        }
5058        if (!defined $hash) {
5059                $hash = git_get_head_hash($project);
5060        }
5061        my %co = parse_commit($hash);
5062        if (!%co) {
5063                die_error(undef, "Unknown commit object");
5064        }
5065        if (!defined $page) {
5066                $page = 0;
5067        }
5068
5069        $searchtype ||= 'commit';
5070        if ($searchtype eq 'pickaxe') {
5071                # pickaxe may take all resources of your box and run for several minutes
5072                # with every query - so decide by yourself how public you make this feature
5073                my ($have_pickaxe) = gitweb_check_feature('pickaxe');
5074                if (!$have_pickaxe) {
5075                        die_error('403 Permission denied', "Permission denied");
5076                }
5077        }
5078        if ($searchtype eq 'grep') {
5079                my ($have_grep) = gitweb_check_feature('grep');
5080                if (!$have_grep) {
5081                        die_error('403 Permission denied', "Permission denied");
5082                }
5083        }
5084
5085        git_header_html();
5086
5087        if ($searchtype eq 'commit' or $searchtype eq 'author' or $searchtype eq 'committer') {
5088                my $greptype;
5089                if ($searchtype eq 'commit') {
5090                        $greptype = "--grep=";
5091                } elsif ($searchtype eq 'author') {
5092                        $greptype = "--author=";
5093                } elsif ($searchtype eq 'committer') {
5094                        $greptype = "--committer=";
5095                }
5096                $greptype .= $search_regexp;
5097                my @commitlist = parse_commits($hash, 101, (100 * $page), $greptype);
5098
5099                my $paging_nav = '';
5100                if ($page > 0) {
5101                        $paging_nav .=
5102                                $cgi->a({-href => href(action=>"search", hash=>$hash,
5103                                                       searchtext=>$searchtext, searchtype=>$searchtype)},
5104                                        "first");
5105                        $paging_nav .= " &sdot; " .
5106                                $cgi->a({-href => href(action=>"search", hash=>$hash,
5107                                                       searchtext=>$searchtext, searchtype=>$searchtype,
5108                                                       page=>$page-1),
5109                                         -accesskey => "p", -title => "Alt-p"}, "prev");
5110                } else {
5111                        $paging_nav .= "first";
5112                        $paging_nav .= " &sdot; prev";
5113                }
5114                if ($#commitlist >= 100) {
5115                        $paging_nav .= " &sdot; " .
5116                                $cgi->a({-href => href(action=>"search", hash=>$hash,
5117                                                       searchtext=>$searchtext, searchtype=>$searchtype,
5118                                                       page=>$page+1),
5119                                         -accesskey => "n", -title => "Alt-n"}, "next");
5120                } else {
5121                        $paging_nav .= " &sdot; next";
5122                }
5123                my $next_link = '';
5124                if ($#commitlist >= 100) {
5125                        $next_link =
5126                                $cgi->a({-href => href(action=>"search", hash=>$hash,
5127                                                       searchtext=>$searchtext, searchtype=>$searchtype,
5128                                                       page=>$page+1),
5129                                         -accesskey => "n", -title => "Alt-n"}, "next");
5130                }
5131
5132                git_print_page_nav('','', $hash,$co{'tree'},$hash, $paging_nav);
5133                git_print_header_div('commit', esc_html($co{'title'}), $hash);
5134                git_search_grep_body(\@commitlist, 0, 99, $next_link);
5135        }
5136
5137        if ($searchtype eq 'pickaxe') {
5138                git_print_page_nav('','', $hash,$co{'tree'},$hash);
5139                git_print_header_div('commit', esc_html($co{'title'}), $hash);
5140
5141                print "<table cellspacing=\"0\">\n";
5142                my $alternate = 1;
5143                $/ = "\n";
5144                my $git_command = git_cmd_str();
5145                my $searchqtext = $searchtext;
5146                $searchqtext =~ s/'/'\\''/;
5147                open my $fd, "-|", "$git_command rev-list $hash | " .
5148                        "$git_command diff-tree -r --stdin -S\'$searchqtext\'";
5149                undef %co;
5150                my @files;
5151                while (my $line = <$fd>) {
5152                        if (%co && $line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)\t(.*)$/) {
5153                                my %set;
5154                                $set{'file'} = $6;
5155                                $set{'from_id'} = $3;
5156                                $set{'to_id'} = $4;
5157                                $set{'id'} = $set{'to_id'};
5158                                if ($set{'id'} =~ m/0{40}/) {
5159                                        $set{'id'} = $set{'from_id'};
5160                                }
5161                                if ($set{'id'} =~ m/0{40}/) {
5162                                        next;
5163                                }
5164                                push @files, \%set;
5165                        } elsif ($line =~ m/^([0-9a-fA-F]{40})$/){
5166                                if (%co) {
5167                                        if ($alternate) {
5168                                                print "<tr class=\"dark\">\n";
5169                                        } else {
5170                                                print "<tr class=\"light\">\n";
5171                                        }
5172                                        $alternate ^= 1;
5173                                        print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
5174                                              "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 5)) . "</i></td>\n" .
5175                                              "<td>" .
5176                                              $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}),
5177                                                      -class => "list subject"},
5178                                                      esc_html(chop_str($co{'title'}, 50)) . "<br/>");
5179                                        while (my $setref = shift @files) {
5180                                                my %set = %$setref;
5181                                                print $cgi->a({-href => href(action=>"blob", hash_base=>$co{'id'},
5182                                                                             hash=>$set{'id'}, file_name=>$set{'file'}),
5183                                                              -class => "list"},
5184                                                              "<span class=\"match\">" . esc_path($set{'file'}) . "</span>") .
5185                                                      "<br/>\n";
5186                                        }
5187                                        print "</td>\n" .
5188                                              "<td class=\"link\">" .
5189                                              $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})}, "commit") .
5190                                              " | " .
5191                                              $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$co{'id'})}, "tree");
5192                                        print "</td>\n" .
5193                                              "</tr>\n";
5194                                }
5195                                %co = parse_commit($1);
5196                        }
5197                }
5198                close $fd;
5199
5200                print "</table>\n";
5201        }
5202
5203        if ($searchtype eq 'grep') {
5204                git_print_page_nav('','', $hash,$co{'tree'},$hash);
5205                git_print_header_div('commit', esc_html($co{'title'}), $hash);
5206
5207                print "<table cellspacing=\"0\">\n";
5208                my $alternate = 1;
5209                my $matches = 0;
5210                $/ = "\n";
5211                open my $fd, "-|", git_cmd(), 'grep', '-n', '-i', '-E', $searchtext, $co{'tree'};
5212                my $lastfile = '';
5213                while (my $line = <$fd>) {
5214                        chomp $line;
5215                        my ($file, $lno, $ltext, $binary);
5216                        last if ($matches++ > 1000);
5217                        if ($line =~ /^Binary file (.+) matches$/) {
5218                                $file = $1;
5219                                $binary = 1;
5220                        } else {
5221                                (undef, $file, $lno, $ltext) = split(/:/, $line, 4);
5222                        }
5223                        if ($file ne $lastfile) {
5224                                $lastfile and print "</td></tr>\n";
5225                                if ($alternate++) {
5226                                        print "<tr class=\"dark\">\n";
5227                                } else {
5228                                        print "<tr class=\"light\">\n";
5229                                }
5230                                print "<td class=\"list\">".
5231                                        $cgi->a({-href => href(action=>"blob", hash=>$co{'hash'},
5232                                                               file_name=>"$file"),
5233                                                -class => "list"}, esc_path($file));
5234                                print "</td><td>\n";
5235                                $lastfile = $file;
5236                        }
5237                        if ($binary) {
5238                                print "<div class=\"binary\">Binary file</div>\n";
5239                        } else {
5240                                $ltext = untabify($ltext);
5241                                if ($ltext =~ m/^(.*)($searchtext)(.*)$/i) {
5242                                        $ltext = esc_html($1, -nbsp=>1);
5243                                        $ltext .= '<span class="match">';
5244                                        $ltext .= esc_html($2, -nbsp=>1);
5245                                        $ltext .= '</span>';
5246                                        $ltext .= esc_html($3, -nbsp=>1);
5247                                } else {
5248                                        $ltext = esc_html($ltext, -nbsp=>1);
5249                                }
5250                                print "<div class=\"pre\">" .
5251                                        $cgi->a({-href => href(action=>"blob", hash=>$co{'hash'},
5252                                                               file_name=>"$file").'#l'.$lno,
5253                                                -class => "linenr"}, sprintf('%4i', $lno))
5254                                        . ' ' .  $ltext . "</div>\n";
5255                        }
5256                }
5257                if ($lastfile) {
5258                        print "</td></tr>\n";
5259                        if ($matches > 1000) {
5260                                print "<div class=\"diff nodifferences\">Too many matches, listing trimmed</div>\n";
5261                        }
5262                } else {
5263                        print "<div class=\"diff nodifferences\">No matches found</div>\n";
5264                }
5265                close $fd;
5266
5267                print "</table>\n";
5268        }
5269        git_footer_html();
5270}
5271
5272sub git_search_help {
5273        git_header_html();
5274        git_print_page_nav('','', $hash,$hash,$hash);
5275        print <<EOT;
5276<dl>
5277<dt><b>commit</b></dt>
5278<dd>The commit messages and authorship information will be scanned for the given string.</dd>
5279EOT
5280        my ($have_grep) = gitweb_check_feature('grep');
5281        if ($have_grep) {
5282                print <<EOT;
5283<dt><b>grep</b></dt>
5284<dd>All files in the currently selected tree (HEAD unless you are explicitly browsing
5285    a different one) are searched for the given
5286<a href="http://en.wikipedia.org/wiki/Regular_expression">regular expression</a>
5287(POSIX extended) and the matches are listed. On large
5288trees, this search can take a while and put some strain on the server, so please use it with
5289some consideration.</dd>
5290EOT
5291        }
5292        print <<EOT;
5293<dt><b>author</b></dt>
5294<dd>Name and e-mail of the change author and date of birth of the patch will be scanned for the given string.</dd>
5295<dt><b>committer</b></dt>
5296<dd>Name and e-mail of the committer and date of commit will be scanned for the given string.</dd>
5297EOT
5298        my ($have_pickaxe) = gitweb_check_feature('pickaxe');
5299        if ($have_pickaxe) {
5300                print <<EOT;
5301<dt><b>pickaxe</b></dt>
5302<dd>All commits that caused the string to appear or disappear from any file (changes that
5303added, removed or "modified" the string) will be listed. This search can take a while and
5304takes a lot of strain on the server, so please use it wisely.</dd>
5305EOT
5306        }
5307        print "</dl>\n";
5308        git_footer_html();
5309}
5310
5311sub git_shortlog {
5312        my $head = git_get_head_hash($project);
5313        if (!defined $hash) {
5314                $hash = $head;
5315        }
5316        if (!defined $page) {
5317                $page = 0;
5318        }
5319        my $refs = git_get_references();
5320
5321        my @commitlist = parse_commits($hash, 101, (100 * $page));
5322
5323        my $paging_nav = format_paging_nav('shortlog', $hash, $head, $page, (100 * ($page+1)));
5324        my $next_link = '';
5325        if ($#commitlist >= 100) {
5326                $next_link =
5327                        $cgi->a({-href => href(action=>"shortlog", hash=>$hash, page=>$page+1),
5328                                 -accesskey => "n", -title => "Alt-n"}, "next");
5329        }
5330
5331        git_header_html();
5332        git_print_page_nav('shortlog','', $hash,$hash,$hash, $paging_nav);
5333        git_print_header_div('summary', $project);
5334
5335        git_shortlog_body(\@commitlist, 0, 99, $refs, $next_link);
5336
5337        git_footer_html();
5338}
5339
5340## ......................................................................
5341## feeds (RSS, Atom; OPML)
5342
5343sub git_feed {
5344        my $format = shift || 'atom';
5345        my ($have_blame) = gitweb_check_feature('blame');
5346
5347        # Atom: http://www.atomenabled.org/developers/syndication/
5348        # RSS:  http://www.notestips.com/80256B3A007F2692/1/NAMO5P9UPQ
5349        if ($format ne 'rss' && $format ne 'atom') {
5350                die_error(undef, "Unknown web feed format");
5351        }
5352
5353        # log/feed of current (HEAD) branch, log of given branch, history of file/directory
5354        my $head = $hash || 'HEAD';
5355        my @commitlist = parse_commits($head, 150);
5356
5357        my %latest_commit;
5358        my %latest_date;
5359        my $content_type = "application/$format+xml";
5360        if (defined $cgi->http('HTTP_ACCEPT') &&
5361                 $cgi->Accept('text/xml') > $cgi->Accept($content_type)) {
5362                # browser (feed reader) prefers text/xml
5363                $content_type = 'text/xml';
5364        }
5365        if (defined($commitlist[0])) {
5366                %latest_commit = %{$commitlist[0]};
5367                %latest_date   = parse_date($latest_commit{'author_epoch'});
5368                print $cgi->header(
5369                        -type => $content_type,
5370                        -charset => 'utf-8',
5371                        -last_modified => $latest_date{'rfc2822'});
5372        } else {
5373                print $cgi->header(
5374                        -type => $content_type,
5375                        -charset => 'utf-8');
5376        }
5377
5378        # Optimization: skip generating the body if client asks only
5379        # for Last-Modified date.
5380        return if ($cgi->request_method() eq 'HEAD');
5381
5382        # header variables
5383        my $title = "$site_name - $project/$action";
5384        my $feed_type = 'log';
5385        if (defined $hash) {
5386                $title .= " - '$hash'";
5387                $feed_type = 'branch log';
5388                if (defined $file_name) {
5389                        $title .= " :: $file_name";
5390                        $feed_type = 'history';
5391                }
5392        } elsif (defined $file_name) {
5393                $title .= " - $file_name";
5394                $feed_type = 'history';
5395        }
5396        $title .= " $feed_type";
5397        my $descr = git_get_project_description($project);
5398        if (defined $descr) {
5399                $descr = esc_html($descr);
5400        } else {
5401                $descr = "$project " .
5402                         ($format eq 'rss' ? 'RSS' : 'Atom') .
5403                         " feed";
5404        }
5405        my $owner = git_get_project_owner($project);
5406        $owner = esc_html($owner);
5407
5408        #header
5409        my $alt_url;
5410        if (defined $file_name) {
5411                $alt_url = href(-full=>1, action=>"history", hash=>$hash, file_name=>$file_name);
5412        } elsif (defined $hash) {
5413                $alt_url = href(-full=>1, action=>"log", hash=>$hash);
5414        } else {
5415                $alt_url = href(-full=>1, action=>"summary");
5416        }
5417        print qq!<?xml version="1.0" encoding="utf-8"?>\n!;
5418        if ($format eq 'rss') {
5419                print <<XML;
5420<rss version="2.0" xmlns:content="http://purl.org/rss/1.0/modules/content/">
5421<channel>
5422XML
5423                print "<title>$title</title>\n" .
5424                      "<link>$alt_url</link>\n" .
5425                      "<description>$descr</description>\n" .
5426                      "<language>en</language>\n";
5427        } elsif ($format eq 'atom') {
5428                print <<XML;
5429<feed xmlns="http://www.w3.org/2005/Atom">
5430XML
5431                print "<title>$title</title>\n" .
5432                      "<subtitle>$descr</subtitle>\n" .
5433                      '<link rel="alternate" type="text/html" href="' .
5434                      $alt_url . '" />' . "\n" .
5435                      '<link rel="self" type="' . $content_type . '" href="' .
5436                      $cgi->self_url() . '" />' . "\n" .
5437                      "<id>" . href(-full=>1) . "</id>\n" .
5438                      # use project owner for feed author
5439                      "<author><name>$owner</name></author>\n";
5440                if (defined $favicon) {
5441                        print "<icon>" . esc_url($favicon) . "</icon>\n";
5442                }
5443                if (defined $logo_url) {
5444                        # not twice as wide as tall: 72 x 27 pixels
5445                        print "<logo>" . esc_url($logo) . "</logo>\n";
5446                }
5447                if (! %latest_date) {
5448                        # dummy date to keep the feed valid until commits trickle in:
5449                        print "<updated>1970-01-01T00:00:00Z</updated>\n";
5450                } else {
5451                        print "<updated>$latest_date{'iso-8601'}</updated>\n";
5452                }
5453        }
5454
5455        # contents
5456        for (my $i = 0; $i <= $#commitlist; $i++) {
5457                my %co = %{$commitlist[$i]};
5458                my $commit = $co{'id'};
5459                # we read 150, we always show 30 and the ones more recent than 48 hours
5460                if (($i >= 20) && ((time - $co{'author_epoch'}) > 48*60*60)) {
5461                        last;
5462                }
5463                my %cd = parse_date($co{'author_epoch'});
5464
5465                # get list of changed files
5466                open my $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
5467                        $co{'parent'} || "--root",
5468                        $co{'id'}, "--", (defined $file_name ? $file_name : ())
5469                        or next;
5470                my @difftree = map { chomp; $_ } <$fd>;
5471                close $fd
5472                        or next;
5473
5474                # print element (entry, item)
5475                my $co_url = href(-full=>1, action=>"commit", hash=>$commit);
5476                if ($format eq 'rss') {
5477                        print "<item>\n" .
5478                              "<title>" . esc_html($co{'title'}) . "</title>\n" .
5479                              "<author>" . esc_html($co{'author'}) . "</author>\n" .
5480                              "<pubDate>$cd{'rfc2822'}</pubDate>\n" .
5481                              "<guid isPermaLink=\"true\">$co_url</guid>\n" .
5482                              "<link>$co_url</link>\n" .
5483                              "<description>" . esc_html($co{'title'}) . "</description>\n" .
5484                              "<content:encoded>" .
5485                              "<![CDATA[\n";
5486                } elsif ($format eq 'atom') {
5487                        print "<entry>\n" .
5488                              "<title type=\"html\">" . esc_html($co{'title'}) . "</title>\n" .
5489                              "<updated>$cd{'iso-8601'}</updated>\n" .
5490                              "<author>\n" .
5491                              "  <name>" . esc_html($co{'author_name'}) . "</name>\n";
5492                        if ($co{'author_email'}) {
5493                                print "  <email>" . esc_html($co{'author_email'}) . "</email>\n";
5494                        }
5495                        print "</author>\n" .
5496                              # use committer for contributor
5497                              "<contributor>\n" .
5498                              "  <name>" . esc_html($co{'committer_name'}) . "</name>\n";
5499                        if ($co{'committer_email'}) {
5500                                print "  <email>" . esc_html($co{'committer_email'}) . "</email>\n";
5501                        }
5502                        print "</contributor>\n" .
5503                              "<published>$cd{'iso-8601'}</published>\n" .
5504                              "<link rel=\"alternate\" type=\"text/html\" href=\"$co_url\" />\n" .
5505                              "<id>$co_url</id>\n" .
5506                              "<content type=\"xhtml\" xml:base=\"" . esc_url($my_url) . "\">\n" .
5507                              "<div xmlns=\"http://www.w3.org/1999/xhtml\">\n";
5508                }
5509                my $comment = $co{'comment'};
5510                print "<pre>\n";
5511                foreach my $line (@$comment) {
5512                        $line = esc_html($line);
5513                        print "$line\n";
5514                }
5515                print "</pre><ul>\n";
5516                foreach my $difftree_line (@difftree) {
5517                        my %difftree = parse_difftree_raw_line($difftree_line);
5518                        next if !$difftree{'from_id'};
5519
5520                        my $file = $difftree{'file'} || $difftree{'to_file'};
5521
5522                        print "<li>" .
5523                              "[" .
5524                              $cgi->a({-href => href(-full=>1, action=>"blobdiff",
5525                                                     hash=>$difftree{'to_id'}, hash_parent=>$difftree{'from_id'},
5526                                                     hash_base=>$co{'id'}, hash_parent_base=>$co{'parent'},
5527                                                     file_name=>$file, file_parent=>$difftree{'from_file'}),
5528                                      -title => "diff"}, 'D');
5529                        if ($have_blame) {
5530                                print $cgi->a({-href => href(-full=>1, action=>"blame",
5531                                                             file_name=>$file, hash_base=>$commit),
5532                                              -title => "blame"}, 'B');
5533                        }
5534                        # if this is not a feed of a file history
5535                        if (!defined $file_name || $file_name ne $file) {
5536                                print $cgi->a({-href => href(-full=>1, action=>"history",
5537                                                             file_name=>$file, hash=>$commit),
5538                                              -title => "history"}, 'H');
5539                        }
5540                        $file = esc_path($file);
5541                        print "] ".
5542                              "$file</li>\n";
5543                }
5544                if ($format eq 'rss') {
5545                        print "</ul>]]>\n" .
5546                              "</content:encoded>\n" .
5547                              "</item>\n";
5548                } elsif ($format eq 'atom') {
5549                        print "</ul>\n</div>\n" .
5550                              "</content>\n" .
5551                              "</entry>\n";
5552                }
5553        }
5554
5555        # end of feed
5556        if ($format eq 'rss') {
5557                print "</channel>\n</rss>\n";
5558        }       elsif ($format eq 'atom') {
5559                print "</feed>\n";
5560        }
5561}
5562
5563sub git_rss {
5564        git_feed('rss');
5565}
5566
5567sub git_atom {
5568        git_feed('atom');
5569}
5570
5571sub git_opml {
5572        my @list = git_get_projects_list();
5573
5574        print $cgi->header(-type => 'text/xml', -charset => 'utf-8');
5575        print <<XML;
5576<?xml version="1.0" encoding="utf-8"?>
5577<opml version="1.0">
5578<head>
5579  <title>$site_name OPML Export</title>
5580</head>
5581<body>
5582<outline text="git RSS feeds">
5583XML
5584
5585        foreach my $pr (@list) {
5586                my %proj = %$pr;
5587                my $head = git_get_head_hash($proj{'path'});
5588                if (!defined $head) {
5589                        next;
5590                }
5591                $git_dir = "$projectroot/$proj{'path'}";
5592                my %co = parse_commit($head);
5593                if (!%co) {
5594                        next;
5595                }
5596
5597                my $path = esc_html(chop_str($proj{'path'}, 25, 5));
5598                my $rss  = "$my_url?p=$proj{'path'};a=rss";
5599                my $html = "$my_url?p=$proj{'path'};a=summary";
5600                print "<outline type=\"rss\" text=\"$path\" title=\"$path\" xmlUrl=\"$rss\" htmlUrl=\"$html\"/>\n";
5601        }
5602        print <<XML;
5603</outline>
5604</body>
5605</opml>
5606XML
5607}