Andrew's git - gitweb.git/blob

13114bc9c62015ebbc50ded7caf2912aea5ee069
   1#!/usr/bin/perl
   2
   3# gitweb - simple web interface to track changes in git repositories
   4#
   5# (C) 2005-2006, Kay Sievers <kay.sievers@vrfy.org>
   6# (C) 2005, Christian Gierke
   7#
   8# This program is licensed under the GPLv2
   9
  10use strict;
  11use warnings;
  12use CGI qw(:standard :escapeHTML -nosticky);
  13use CGI::Util qw(unescape);
  14use CGI::Carp qw(fatalsToBrowser);
  15use Encode;
  16use Fcntl ':mode';
  17use File::Find qw();
  18use File::Basename qw(basename);
  19binmode STDOUT, ':utf8';
  20
  21BEGIN {
  22        CGI->compile() if $ENV{'MOD_PERL'};
  23}
  24
  25our $cgi = new CGI;
  26our $version = "++GIT_VERSION++";
  27our $my_url = $cgi->url();
  28our $my_uri = $cgi->url(-absolute => 1);
  29
  30# core git executable to use
  31# this can just be "git" if your webserver has a sensible PATH
  32our $GIT = "++GIT_BINDIR++/git";
  33
  34# absolute fs-path which will be prepended to the project path
  35#our $projectroot = "/pub/scm";
  36our $projectroot = "++GITWEB_PROJECTROOT++";
  37
  38# target of the home link on top of all pages
  39our $home_link = $my_uri || "/";
  40
  41# string of the home link on top of all pages
  42our $home_link_str = "++GITWEB_HOME_LINK_STR++";
  43
  44# name of your site or organization to appear in page titles
  45# replace this with something more descriptive for clearer bookmarks
  46our $site_name = "++GITWEB_SITENAME++"
  47                 || ($ENV{'SERVER_NAME'} || "Untitled") . " Git";
  48
  49# filename of html text to include at top of each page
  50our $site_header = "++GITWEB_SITE_HEADER++";
  51# html text to include at home page
  52our $home_text = "++GITWEB_HOMETEXT++";
  53# filename of html text to include at bottom of each page
  54our $site_footer = "++GITWEB_SITE_FOOTER++";
  55
  56# URI of stylesheets
  57our @stylesheets = ("++GITWEB_CSS++");
  58# URI of a single stylesheet, which can be overridden in GITWEB_CONFIG.
  59our $stylesheet = undef;
  60# URI of GIT logo (72x27 size)
  61our $logo = "++GITWEB_LOGO++";
  62# URI of GIT favicon, assumed to be image/png type
  63our $favicon = "++GITWEB_FAVICON++";
  64
  65# URI and label (title) of GIT logo link
  66#our $logo_url = "http://www.kernel.org/pub/software/scm/git/docs/";
  67#our $logo_label = "git documentation";
  68our $logo_url = "http://git.or.cz/";
  69our $logo_label = "git homepage";
  70
  71# source of projects list
  72our $projects_list = "++GITWEB_LIST++";
  73
  74# default order of projects list
  75# valid values are none, project, descr, owner, and age
  76our $default_projects_order = "project";
  77
  78# show repository only if this file exists
  79# (only effective if this variable evaluates to true)
  80our $export_ok = "++GITWEB_EXPORT_OK++";
  81
  82# only allow viewing of repositories also shown on the overview page
  83our $strict_export = "++GITWEB_STRICT_EXPORT++";
  84
  85# list of git base URLs used for URL to where fetch project from,
  86# i.e. full URL is "$git_base_url/$project"
  87our @git_base_url_list = grep { $_ ne '' } ("++GITWEB_BASE_URL++");
  88
  89# default blob_plain mimetype and default charset for text/plain blob
  90our $default_blob_plain_mimetype = 'text/plain';
  91our $default_text_plain_charset  = undef;
  92
  93# file to use for guessing MIME types before trying /etc/mime.types
  94# (relative to the current git repository)
  95our $mimetypes_file = undef;
  96
  97# assume this charset if line contains non-UTF-8 characters;
  98# it should be valid encoding (see Encoding::Supported(3pm) for list),
  99# for which encoding all byte sequences are valid, for example
 100# 'iso-8859-1' aka 'latin1' (it is decoded without checking, so it
 101# could be even 'utf-8' for the old behavior)
 102our $fallback_encoding = 'latin1';
 103
 104# You define site-wide feature defaults here; override them with
 105# $GITWEB_CONFIG as necessary.
 106our %feature = (
 107        # feature => {
 108        #       'sub' => feature-sub (subroutine),
 109        #       'override' => allow-override (boolean),
 110        #       'default' => [ default options...] (array reference)}
 111        #
 112        # if feature is overridable (it means that allow-override has true value),
 113        # then feature-sub will be called with default options as parameters;
 114        # return value of feature-sub indicates if to enable specified feature
 115        #
 116        # if there is no 'sub' key (no feature-sub), then feature cannot be
 117        # overriden
 118        #
 119        # use gitweb_check_feature(<feature>) to check if <feature> is enabled
 120
 121        # Enable the 'blame' blob view, showing the last commit that modified
 122        # each line in the file. This can be very CPU-intensive.
 123
 124        # To enable system wide have in $GITWEB_CONFIG
 125        # $feature{'blame'}{'default'} = [1];
 126        # To have project specific config enable override in $GITWEB_CONFIG
 127        # $feature{'blame'}{'override'} = 1;
 128        # and in project config gitweb.blame = 0|1;
 129        'blame' => {
 130                'sub' => \&feature_blame,
 131                'override' => 0,
 132                'default' => [0]},
 133
 134        # Enable the 'snapshot' link, providing a compressed tarball of any
 135        # tree. This can potentially generate high traffic if you have large
 136        # project.
 137
 138        # To disable system wide have in $GITWEB_CONFIG
 139        # $feature{'snapshot'}{'default'} = [undef];
 140        # To have project specific config enable override in $GITWEB_CONFIG
 141        # $feature{'snapshot'}{'override'} = 1;
 142        # and in project config gitweb.snapshot = none|gzip|bzip2|zip;
 143        'snapshot' => {
 144                'sub' => \&feature_snapshot,
 145                'override' => 0,
 146                #         => [content-encoding, suffix, program]
 147                'default' => ['x-gzip', 'gz', 'gzip']},
 148
 149        # Enable text search, which will list the commits which match author,
 150        # committer or commit text to a given string.  Enabled by default.
 151        # Project specific override is not supported.
 152        'search' => {
 153                'override' => 0,
 154                'default' => [1]},
 155
 156        # Enable grep search, which will list the files in currently selected
 157        # tree containing the given string. Enabled by default. This can be
 158        # potentially CPU-intensive, of course.
 159
 160        # To enable system wide have in $GITWEB_CONFIG
 161        # $feature{'grep'}{'default'} = [1];
 162        # To have project specific config enable override in $GITWEB_CONFIG
 163        # $feature{'grep'}{'override'} = 1;
 164        # and in project config gitweb.grep = 0|1;
 165        'grep' => {
 166                'override' => 0,
 167                'default' => [1]},
 168
 169        # Enable the pickaxe search, which will list the commits that modified
 170        # a given string in a file. This can be practical and quite faster
 171        # alternative to 'blame', but still potentially CPU-intensive.
 172
 173        # To enable system wide have in $GITWEB_CONFIG
 174        # $feature{'pickaxe'}{'default'} = [1];
 175        # To have project specific config enable override in $GITWEB_CONFIG
 176        # $feature{'pickaxe'}{'override'} = 1;
 177        # and in project config gitweb.pickaxe = 0|1;
 178        'pickaxe' => {
 179                'sub' => \&feature_pickaxe,
 180                'override' => 0,
 181                'default' => [1]},
 182
 183        # Make gitweb use an alternative format of the URLs which can be
 184        # more readable and natural-looking: project name is embedded
 185        # directly in the path and the query string contains other
 186        # auxiliary information. All gitweb installations recognize
 187        # URL in either format; this configures in which formats gitweb
 188        # generates links.
 189
 190        # To enable system wide have in $GITWEB_CONFIG
 191        # $feature{'pathinfo'}{'default'} = [1];
 192        # Project specific override is not supported.
 193
 194        # Note that you will need to change the default location of CSS,
 195        # favicon, logo and possibly other files to an absolute URL. Also,
 196        # if gitweb.cgi serves as your indexfile, you will need to force
 197        # $my_uri to contain the script name in your $GITWEB_CONFIG.
 198        'pathinfo' => {
 199                'override' => 0,
 200                'default' => [0]},
 201
 202        # Make gitweb consider projects in project root subdirectories
 203        # to be forks of existing projects. Given project $projname.git,
 204        # projects matching $projname/*.git will not be shown in the main
 205        # projects list, instead a '+' mark will be added to $projname
 206        # there and a 'forks' view will be enabled for the project, listing
 207        # all the forks. If project list is taken from a file, forks have
 208        # to be listed after the main project.
 209
 210        # To enable system wide have in $GITWEB_CONFIG
 211        # $feature{'forks'}{'default'} = [1];
 212        # Project specific override is not supported.
 213        'forks' => {
 214                'override' => 0,
 215                'default' => [0]},
 216);
 217
 218sub gitweb_check_feature {
 219        my ($name) = @_;
 220        return unless exists $feature{$name};
 221        my ($sub, $override, @defaults) = (
 222                $feature{$name}{'sub'},
 223                $feature{$name}{'override'},
 224                @{$feature{$name}{'default'}});
 225        if (!$override) { return @defaults; }
 226        if (!defined $sub) {
 227                warn "feature $name is not overrideable";
 228                return @defaults;
 229        }
 230        return $sub->(@defaults);
 231}
 232
 233sub feature_blame {
 234        my ($val) = git_get_project_config('blame', '--bool');
 235
 236        if ($val eq 'true') {
 237                return 1;
 238        } elsif ($val eq 'false') {
 239                return 0;
 240        }
 241
 242        return $_[0];
 243}
 244
 245sub feature_snapshot {
 246        my ($ctype, $suffix, $command) = @_;
 247
 248        my ($val) = git_get_project_config('snapshot');
 249
 250        if ($val eq 'gzip') {
 251                return ('x-gzip', 'gz', 'gzip');
 252        } elsif ($val eq 'bzip2') {
 253                return ('x-bzip2', 'bz2', 'bzip2');
 254        } elsif ($val eq 'zip') {
 255                return ('x-zip', 'zip', '');
 256        } elsif ($val eq 'none') {
 257                return ();
 258        }
 259
 260        return ($ctype, $suffix, $command);
 261}
 262
 263sub gitweb_have_snapshot {
 264        my ($ctype, $suffix, $command) = gitweb_check_feature('snapshot');
 265        my $have_snapshot = (defined $ctype && defined $suffix);
 266
 267        return $have_snapshot;
 268}
 269
 270sub feature_grep {
 271        my ($val) = git_get_project_config('grep', '--bool');
 272
 273        if ($val eq 'true') {
 274                return (1);
 275        } elsif ($val eq 'false') {
 276                return (0);
 277        }
 278
 279        return ($_[0]);
 280}
 281
 282sub feature_pickaxe {
 283        my ($val) = git_get_project_config('pickaxe', '--bool');
 284
 285        if ($val eq 'true') {
 286                return (1);
 287        } elsif ($val eq 'false') {
 288                return (0);
 289        }
 290
 291        return ($_[0]);
 292}
 293
 294# checking HEAD file with -e is fragile if the repository was
 295# initialized long time ago (i.e. symlink HEAD) and was pack-ref'ed
 296# and then pruned.
 297sub check_head_link {
 298        my ($dir) = @_;
 299        my $headfile = "$dir/HEAD";
 300        return ((-e $headfile) ||
 301                (-l $headfile && readlink($headfile) =~ /^refs\/heads\//));
 302}
 303
 304sub check_export_ok {
 305        my ($dir) = @_;
 306        return (check_head_link($dir) &&
 307                (!$export_ok || -e "$dir/$export_ok"));
 308}
 309
 310# rename detection options for git-diff and git-diff-tree
 311# - default is '-M', with the cost proportional to
 312#   (number of removed files) * (number of new files).
 313# - more costly is '-C' (or '-C', '-M'), with the cost proportional to
 314#   (number of changed files + number of removed files) * (number of new files)
 315# - even more costly is '-C', '--find-copies-harder' with cost
 316#   (number of files in the original tree) * (number of new files)
 317# - one might want to include '-B' option, e.g. '-B', '-M'
 318our @diff_opts = ('-M'); # taken from git_commit
 319
 320our $GITWEB_CONFIG = $ENV{'GITWEB_CONFIG'} || "++GITWEB_CONFIG++";
 321do $GITWEB_CONFIG if -e $GITWEB_CONFIG;
 322
 323# version of the core git binary
 324our $git_version = qx($GIT --version) =~ m/git version (.*)$/ ? $1 : "unknown";
 325
 326$projects_list ||= $projectroot;
 327
 328# ======================================================================
 329# input validation and dispatch
 330our $action = $cgi->param('a');
 331if (defined $action) {
 332        if ($action =~ m/[^0-9a-zA-Z\.\-_]/) {
 333                die_error(undef, "Invalid action parameter");
 334        }
 335}
 336
 337# parameters which are pathnames
 338our $project = $cgi->param('p');
 339if (defined $project) {
 340        if (!validate_pathname($project) ||
 341            !(-d "$projectroot/$project") ||
 342            !check_head_link("$projectroot/$project") ||
 343            ($export_ok && !(-e "$projectroot/$project/$export_ok")) ||
 344            ($strict_export && !project_in_list($project))) {
 345                undef $project;
 346                die_error(undef, "No such project");
 347        }
 348}
 349
 350our $file_name = $cgi->param('f');
 351if (defined $file_name) {
 352        if (!validate_pathname($file_name)) {
 353                die_error(undef, "Invalid file parameter");
 354        }
 355}
 356
 357our $file_parent = $cgi->param('fp');
 358if (defined $file_parent) {
 359        if (!validate_pathname($file_parent)) {
 360                die_error(undef, "Invalid file parent parameter");
 361        }
 362}
 363
 364# parameters which are refnames
 365our $hash = $cgi->param('h');
 366if (defined $hash) {
 367        if (!validate_refname($hash)) {
 368                die_error(undef, "Invalid hash parameter");
 369        }
 370}
 371
 372our $hash_parent = $cgi->param('hp');
 373if (defined $hash_parent) {
 374        if (!validate_refname($hash_parent)) {
 375                die_error(undef, "Invalid hash parent parameter");
 376        }
 377}
 378
 379our $hash_base = $cgi->param('hb');
 380if (defined $hash_base) {
 381        if (!validate_refname($hash_base)) {
 382                die_error(undef, "Invalid hash base parameter");
 383        }
 384}
 385
 386our $hash_parent_base = $cgi->param('hpb');
 387if (defined $hash_parent_base) {
 388        if (!validate_refname($hash_parent_base)) {
 389                die_error(undef, "Invalid hash parent base parameter");
 390        }
 391}
 392
 393# other parameters
 394our $page = $cgi->param('pg');
 395if (defined $page) {
 396        if ($page =~ m/[^0-9]/) {
 397                die_error(undef, "Invalid page parameter");
 398        }
 399}
 400
 401our $searchtype = $cgi->param('st');
 402if (defined $searchtype) {
 403        if ($searchtype =~ m/[^a-z]/) {
 404                die_error(undef, "Invalid searchtype parameter");
 405        }
 406}
 407
 408our $searchtext = $cgi->param('s');
 409our $search_regexp;
 410if (defined $searchtext) {
 411        if ($searchtype ne 'grep' and $searchtype ne 'pickaxe' and $searchtext =~ m/[^a-zA-Z0-9_\.\/\-\+\:\@ ]/) {
 412                die_error(undef, "Invalid search parameter");
 413        }
 414        if (length($searchtext) < 2) {
 415                die_error(undef, "At least two characters are required for search parameter");
 416        }
 417        $search_regexp = quotemeta $searchtext;
 418}
 419
 420# now read PATH_INFO and use it as alternative to parameters
 421sub evaluate_path_info {
 422        return if defined $project;
 423        my $path_info = $ENV{"PATH_INFO"};
 424        return if !$path_info;
 425        $path_info =~ s,^/+,,;
 426        return if !$path_info;
 427        # find which part of PATH_INFO is project
 428        $project = $path_info;
 429        $project =~ s,/+$,,;
 430        while ($project && !check_head_link("$projectroot/$project")) {
 431                $project =~ s,/*[^/]*$,,;
 432        }
 433        # validate project
 434        $project = validate_pathname($project);
 435        if (!$project ||
 436            ($export_ok && !-e "$projectroot/$project/$export_ok") ||
 437            ($strict_export && !project_in_list($project))) {
 438                undef $project;
 439                return;
 440        }
 441        # do not change any parameters if an action is given using the query string
 442        return if $action;
 443        $path_info =~ s,^$project/*,,;
 444        my ($refname, $pathname) = split(/:/, $path_info, 2);
 445        if (defined $pathname) {
 446                # we got "project.git/branch:filename" or "project.git/branch:dir/"
 447                # we could use git_get_type(branch:pathname), but it needs $git_dir
 448                $pathname =~ s,^/+,,;
 449                if (!$pathname || substr($pathname, -1) eq "/") {
 450                        $action  ||= "tree";
 451                        $pathname =~ s,/$,,;
 452                } else {
 453                        $action  ||= "blob_plain";
 454                }
 455                $hash_base ||= validate_refname($refname);
 456                $file_name ||= validate_pathname($pathname);
 457        } elsif (defined $refname) {
 458                # we got "project.git/branch"
 459                $action ||= "shortlog";
 460                $hash   ||= validate_refname($refname);
 461        }
 462}
 463evaluate_path_info();
 464
 465# path to the current git repository
 466our $git_dir;
 467$git_dir = "$projectroot/$project" if $project;
 468
 469# dispatch
 470my %actions = (
 471        "blame" => \&git_blame2,
 472        "blobdiff" => \&git_blobdiff,
 473        "blobdiff_plain" => \&git_blobdiff_plain,
 474        "blob" => \&git_blob,
 475        "blob_plain" => \&git_blob_plain,
 476        "commitdiff" => \&git_commitdiff,
 477        "commitdiff_plain" => \&git_commitdiff_plain,
 478        "commit" => \&git_commit,
 479        "forks" => \&git_forks,
 480        "heads" => \&git_heads,
 481        "history" => \&git_history,
 482        "log" => \&git_log,
 483        "rss" => \&git_rss,
 484        "atom" => \&git_atom,
 485        "search" => \&git_search,
 486        "search_help" => \&git_search_help,
 487        "shortlog" => \&git_shortlog,
 488        "summary" => \&git_summary,
 489        "tag" => \&git_tag,
 490        "tags" => \&git_tags,
 491        "tree" => \&git_tree,
 492        "snapshot" => \&git_snapshot,
 493        "object" => \&git_object,
 494        # those below don't need $project
 495        "opml" => \&git_opml,
 496        "project_list" => \&git_project_list,
 497        "project_index" => \&git_project_index,
 498);
 499
 500if (!defined $action) {
 501        if (defined $hash) {
 502                $action = git_get_type($hash);
 503        } elsif (defined $hash_base && defined $file_name) {
 504                $action = git_get_type("$hash_base:$file_name");
 505        } elsif (defined $project) {
 506                $action = 'summary';
 507        } else {
 508                $action = 'project_list';
 509        }
 510}
 511if (!defined($actions{$action})) {
 512        die_error(undef, "Unknown action");
 513}
 514if ($action !~ m/^(opml|project_list|project_index)$/ &&
 515    !$project) {
 516        die_error(undef, "Project needed");
 517}
 518$actions{$action}->();
 519exit;
 520
 521## ======================================================================
 522## action links
 523
 524sub href(%) {
 525        my %params = @_;
 526        # default is to use -absolute url() i.e. $my_uri
 527        my $href = $params{-full} ? $my_url : $my_uri;
 528
 529        # XXX: Warning: If you touch this, check the search form for updating,
 530        # too.
 531
 532        my @mapping = (
 533                project => "p",
 534                action => "a",
 535                file_name => "f",
 536                file_parent => "fp",
 537                hash => "h",
 538                hash_parent => "hp",
 539                hash_base => "hb",
 540                hash_parent_base => "hpb",
 541                page => "pg",
 542                order => "o",
 543                searchtext => "s",
 544                searchtype => "st",
 545        );
 546        my %mapping = @mapping;
 547
 548        $params{'project'} = $project unless exists $params{'project'};
 549
 550        my ($use_pathinfo) = gitweb_check_feature('pathinfo');
 551        if ($use_pathinfo) {
 552                # use PATH_INFO for project name
 553                $href .= "/$params{'project'}" if defined $params{'project'};
 554                delete $params{'project'};
 555
 556                # Summary just uses the project path URL
 557                if (defined $params{'action'} && $params{'action'} eq 'summary') {
 558                        delete $params{'action'};
 559                }
 560        }
 561
 562        # now encode the parameters explicitly
 563        my @result = ();
 564        for (my $i = 0; $i < @mapping; $i += 2) {
 565                my ($name, $symbol) = ($mapping[$i], $mapping[$i+1]);
 566                if (defined $params{$name}) {
 567                        push @result, $symbol . "=" . esc_param($params{$name});
 568                }
 569        }
 570        $href .= "?" . join(';', @result) if scalar @result;
 571
 572        return $href;
 573}
 574
 575
 576## ======================================================================
 577## validation, quoting/unquoting and escaping
 578
 579sub validate_pathname {
 580        my $input = shift || return undef;
 581
 582        # no '.' or '..' as elements of path, i.e. no '.' nor '..'
 583        # at the beginning, at the end, and between slashes.
 584        # also this catches doubled slashes
 585        if ($input =~ m!(^|/)(|\.|\.\.)(/|$)!) {
 586                return undef;
 587        }
 588        # no null characters
 589        if ($input =~ m!\0!) {
 590                return undef;
 591        }
 592        return $input;
 593}
 594
 595sub validate_refname {
 596        my $input = shift || return undef;
 597
 598        # textual hashes are O.K.
 599        if ($input =~ m/^[0-9a-fA-F]{40}$/) {
 600                return $input;
 601        }
 602        # it must be correct pathname
 603        $input = validate_pathname($input)
 604                or return undef;
 605        # restrictions on ref name according to git-check-ref-format
 606        if ($input =~ m!(/\.|\.\.|[\000-\040\177 ~^:?*\[]|/$)!) {
 607                return undef;
 608        }
 609        return $input;
 610}
 611
 612# decode sequences of octets in utf8 into Perl's internal form,
 613# which is utf-8 with utf8 flag set if needed.  gitweb writes out
 614# in utf-8 thanks to "binmode STDOUT, ':utf8'" at beginning
 615sub to_utf8 {
 616        my $str = shift;
 617        my $res;
 618        eval { $res = decode_utf8($str, Encode::FB_CROAK); };
 619        if (defined $res) {
 620                return $res;
 621        } else {
 622                return decode($fallback_encoding, $str, Encode::FB_DEFAULT);
 623        }
 624}
 625
 626# quote unsafe chars, but keep the slash, even when it's not
 627# correct, but quoted slashes look too horrible in bookmarks
 628sub esc_param {
 629        my $str = shift;
 630        $str =~ s/([^A-Za-z0-9\-_.~()\/:@])/sprintf("%%%02X", ord($1))/eg;
 631        $str =~ s/\+/%2B/g;
 632        $str =~ s/ /\+/g;
 633        return $str;
 634}
 635
 636# quote unsafe chars in whole URL, so some charactrs cannot be quoted
 637sub esc_url {
 638        my $str = shift;
 639        $str =~ s/([^A-Za-z0-9\-_.~();\/;?:@&=])/sprintf("%%%02X", ord($1))/eg;
 640        $str =~ s/\+/%2B/g;
 641        $str =~ s/ /\+/g;
 642        return $str;
 643}
 644
 645# replace invalid utf8 character with SUBSTITUTION sequence
 646sub esc_html ($;%) {
 647        my $str = shift;
 648        my %opts = @_;
 649
 650        $str = to_utf8($str);
 651        $str = $cgi->escapeHTML($str);
 652        if ($opts{'-nbsp'}) {
 653                $str =~ s/ /&nbsp;/g;
 654        }
 655        $str =~ s|([[:cntrl:]])|(($1 ne "\t") ? quot_cec($1) : $1)|eg;
 656        return $str;
 657}
 658
 659# quote control characters and escape filename to HTML
 660sub esc_path {
 661        my $str = shift;
 662        my %opts = @_;
 663
 664        $str = to_utf8($str);
 665        $str = $cgi->escapeHTML($str);
 666        if ($opts{'-nbsp'}) {
 667                $str =~ s/ /&nbsp;/g;
 668        }
 669        $str =~ s|([[:cntrl:]])|quot_cec($1)|eg;
 670        return $str;
 671}
 672
 673# Make control characters "printable", using character escape codes (CEC)
 674sub quot_cec {
 675        my $cntrl = shift;
 676        my %es = ( # character escape codes, aka escape sequences
 677                   "\t" => '\t',   # tab            (HT)
 678                   "\n" => '\n',   # line feed      (LF)
 679                   "\r" => '\r',   # carrige return (CR)
 680                   "\f" => '\f',   # form feed      (FF)
 681                   "\b" => '\b',   # backspace      (BS)
 682                   "\a" => '\a',   # alarm (bell)   (BEL)
 683                   "\e" => '\e',   # escape         (ESC)
 684                   "\013" => '\v', # vertical tab   (VT)
 685                   "\000" => '\0', # nul character  (NUL)
 686                   );
 687        my $chr = ( (exists $es{$cntrl})
 688                    ? $es{$cntrl}
 689                    : sprintf('\%03o', ord($cntrl)) );
 690        return "<span class=\"cntrl\">$chr</span>";
 691}
 692
 693# Alternatively use unicode control pictures codepoints,
 694# Unicode "printable representation" (PR)
 695sub quot_upr {
 696        my $cntrl = shift;
 697        my $chr = sprintf('&#%04d;', 0x2400+ord($cntrl));
 698        return "<span class=\"cntrl\">$chr</span>";
 699}
 700
 701# git may return quoted and escaped filenames
 702sub unquote {
 703        my $str = shift;
 704
 705        sub unq {
 706                my $seq = shift;
 707                my %es = ( # character escape codes, aka escape sequences
 708                        't' => "\t",   # tab            (HT, TAB)
 709                        'n' => "\n",   # newline        (NL)
 710                        'r' => "\r",   # return         (CR)
 711                        'f' => "\f",   # form feed      (FF)
 712                        'b' => "\b",   # backspace      (BS)
 713                        'a' => "\a",   # alarm (bell)   (BEL)
 714                        'e' => "\e",   # escape         (ESC)
 715                        'v' => "\013", # vertical tab   (VT)
 716                );
 717
 718                if ($seq =~ m/^[0-7]{1,3}$/) {
 719                        # octal char sequence
 720                        return chr(oct($seq));
 721                } elsif (exists $es{$seq}) {
 722                        # C escape sequence, aka character escape code
 723                        return $es{$seq}
 724                }
 725                # quoted ordinary character
 726                return $seq;
 727        }
 728
 729        if ($str =~ m/^"(.*)"$/) {
 730                # needs unquoting
 731                $str = $1;
 732                $str =~ s/\\([^0-7]|[0-7]{1,3})/unq($1)/eg;
 733        }
 734        return $str;
 735}
 736
 737# escape tabs (convert tabs to spaces)
 738sub untabify {
 739        my $line = shift;
 740
 741        while ((my $pos = index($line, "\t")) != -1) {
 742                if (my $count = (8 - ($pos % 8))) {
 743                        my $spaces = ' ' x $count;
 744                        $line =~ s/\t/$spaces/;
 745                }
 746        }
 747
 748        return $line;
 749}
 750
 751sub project_in_list {
 752        my $project = shift;
 753        my @list = git_get_projects_list();
 754        return @list && scalar(grep { $_->{'path'} eq $project } @list);
 755}
 756
 757## ----------------------------------------------------------------------
 758## HTML aware string manipulation
 759
 760sub chop_str {
 761        my $str = shift;
 762        my $len = shift;
 763        my $add_len = shift || 10;
 764
 765        # allow only $len chars, but don't cut a word if it would fit in $add_len
 766        # if it doesn't fit, cut it if it's still longer than the dots we would add
 767        $str =~ m/^(.{0,$len}[^ \/\-_:\.@]{0,$add_len})(.*)/;
 768        my $body = $1;
 769        my $tail = $2;
 770        if (length($tail) > 4) {
 771                $tail = " ...";
 772                $body =~ s/&[^;]*$//; # remove chopped character entities
 773        }
 774        return "$body$tail";
 775}
 776
 777## ----------------------------------------------------------------------
 778## functions returning short strings
 779
 780# CSS class for given age value (in seconds)
 781sub age_class {
 782        my $age = shift;
 783
 784        if (!defined $age) {
 785                return "noage";
 786        } elsif ($age < 60*60*2) {
 787                return "age0";
 788        } elsif ($age < 60*60*24*2) {
 789                return "age1";
 790        } else {
 791                return "age2";
 792        }
 793}
 794
 795# convert age in seconds to "nn units ago" string
 796sub age_string {
 797        my $age = shift;
 798        my $age_str;
 799
 800        if ($age > 60*60*24*365*2) {
 801                $age_str = (int $age/60/60/24/365);
 802                $age_str .= " years ago";
 803        } elsif ($age > 60*60*24*(365/12)*2) {
 804                $age_str = int $age/60/60/24/(365/12);
 805                $age_str .= " months ago";
 806        } elsif ($age > 60*60*24*7*2) {
 807                $age_str = int $age/60/60/24/7;
 808                $age_str .= " weeks ago";
 809        } elsif ($age > 60*60*24*2) {
 810                $age_str = int $age/60/60/24;
 811                $age_str .= " days ago";
 812        } elsif ($age > 60*60*2) {
 813                $age_str = int $age/60/60;
 814                $age_str .= " hours ago";
 815        } elsif ($age > 60*2) {
 816                $age_str = int $age/60;
 817                $age_str .= " min ago";
 818        } elsif ($age > 2) {
 819                $age_str = int $age;
 820                $age_str .= " sec ago";
 821        } else {
 822                $age_str .= " right now";
 823        }
 824        return $age_str;
 825}
 826
 827# convert file mode in octal to symbolic file mode string
 828sub mode_str {
 829        my $mode = oct shift;
 830
 831        if (S_ISDIR($mode & S_IFMT)) {
 832                return 'drwxr-xr-x';
 833        } elsif (S_ISLNK($mode)) {
 834                return 'lrwxrwxrwx';
 835        } elsif (S_ISREG($mode)) {
 836                # git cares only about the executable bit
 837                if ($mode & S_IXUSR) {
 838                        return '-rwxr-xr-x';
 839                } else {
 840                        return '-rw-r--r--';
 841                };
 842        } else {
 843                return '----------';
 844        }
 845}
 846
 847# convert file mode in octal to file type string
 848sub file_type {
 849        my $mode = shift;
 850
 851        if ($mode !~ m/^[0-7]+$/) {
 852                return $mode;
 853        } else {
 854                $mode = oct $mode;
 855        }
 856
 857        if (S_ISDIR($mode & S_IFMT)) {
 858                return "directory";
 859        } elsif (S_ISLNK($mode)) {
 860                return "symlink";
 861        } elsif (S_ISREG($mode)) {
 862                return "file";
 863        } else {
 864                return "unknown";
 865        }
 866}
 867
 868# convert file mode in octal to file type description string
 869sub file_type_long {
 870        my $mode = shift;
 871
 872        if ($mode !~ m/^[0-7]+$/) {
 873                return $mode;
 874        } else {
 875                $mode = oct $mode;
 876        }
 877
 878        if (S_ISDIR($mode & S_IFMT)) {
 879                return "directory";
 880        } elsif (S_ISLNK($mode)) {
 881                return "symlink";
 882        } elsif (S_ISREG($mode)) {
 883                if ($mode & S_IXUSR) {
 884                        return "executable";
 885                } else {
 886                        return "file";
 887                };
 888        } else {
 889                return "unknown";
 890        }
 891}
 892
 893
 894## ----------------------------------------------------------------------
 895## functions returning short HTML fragments, or transforming HTML fragments
 896## which don't belong to other sections
 897
 898# format line of commit message.
 899sub format_log_line_html {
 900        my $line = shift;
 901
 902        $line = esc_html($line, -nbsp=>1);
 903        if ($line =~ m/([0-9a-fA-F]{8,40})/) {
 904                my $hash_text = $1;
 905                my $link =
 906                        $cgi->a({-href => href(action=>"object", hash=>$hash_text),
 907                                -class => "text"}, $hash_text);
 908                $line =~ s/$hash_text/$link/;
 909        }
 910        return $line;
 911}
 912
 913# format marker of refs pointing to given object
 914sub format_ref_marker {
 915        my ($refs, $id) = @_;
 916        my $markers = '';
 917
 918        if (defined $refs->{$id}) {
 919                foreach my $ref (@{$refs->{$id}}) {
 920                        my ($type, $name) = qw();
 921                        # e.g. tags/v2.6.11 or heads/next
 922                        if ($ref =~ m!^(.*?)s?/(.*)$!) {
 923                                $type = $1;
 924                                $name = $2;
 925                        } else {
 926                                $type = "ref";
 927                                $name = $ref;
 928                        }
 929
 930                        $markers .= " <span class=\"$type\" title=\"$ref\">" .
 931                                    esc_html($name) . "</span>";
 932                }
 933        }
 934
 935        if ($markers) {
 936                return ' <span class="refs">'. $markers . '</span>';
 937        } else {
 938                return "";
 939        }
 940}
 941
 942# format, perhaps shortened and with markers, title line
 943sub format_subject_html {
 944        my ($long, $short, $href, $extra) = @_;
 945        $extra = '' unless defined($extra);
 946
 947        if (length($short) < length($long)) {
 948                return $cgi->a({-href => $href, -class => "list subject",
 949                                -title => to_utf8($long)},
 950                       esc_html($short) . $extra);
 951        } else {
 952                return $cgi->a({-href => $href, -class => "list subject"},
 953                       esc_html($long)  . $extra);
 954        }
 955}
 956
 957# format git diff header line, i.e. "diff --(git|combined|cc) ..."
 958sub format_git_diff_header_line {
 959        my $line = shift;
 960        my $diffinfo = shift;
 961        my ($from, $to) = @_;
 962
 963        if ($diffinfo->{'nparents'}) {
 964                # combined diff
 965                $line =~ s!^(diff (.*?) )"?.*$!$1!;
 966                if ($to->{'href'}) {
 967                        $line .= $cgi->a({-href => $to->{'href'}, -class => "path"},
 968                                         esc_path($to->{'file'}));
 969                } else { # file was deleted (no href)
 970                        $line .= esc_path($to->{'file'});
 971                }
 972        } else {
 973                # "ordinary" diff
 974                $line =~ s!^(diff (.*?) )"?a/.*$!$1!;
 975                if ($from->{'href'}) {
 976                        $line .= $cgi->a({-href => $from->{'href'}, -class => "path"},
 977                                         'a/' . esc_path($from->{'file'}));
 978                } else { # file was added (no href)
 979                        $line .= 'a/' . esc_path($from->{'file'});
 980                }
 981                $line .= ' ';
 982                if ($to->{'href'}) {
 983                        $line .= $cgi->a({-href => $to->{'href'}, -class => "path"},
 984                                         'b/' . esc_path($to->{'file'}));
 985                } else { # file was deleted
 986                        $line .= 'b/' . esc_path($to->{'file'});
 987                }
 988        }
 989
 990        return "<div class=\"diff header\">$line</div>\n";
 991}
 992
 993# format extended diff header line, before patch itself
 994sub format_extended_diff_header_line {
 995        my $line = shift;
 996        my $diffinfo = shift;
 997        my ($from, $to) = @_;
 998
 999        # match <path>
1000        if ($line =~ s!^((copy|rename) from ).*$!$1! && $from->{'href'}) {
1001                $line .= $cgi->a({-href=>$from->{'href'}, -class=>"path"},
1002                                       esc_path($from->{'file'}));
1003        }
1004        if ($line =~ s!^((copy|rename) to ).*$!$1! && $to->{'href'}) {
1005                $line .= $cgi->a({-href=>$to->{'href'}, -class=>"path"},
1006                                 esc_path($to->{'file'}));
1007        }
1008        # match single <mode>
1009        if ($line =~ m/\s(\d{6})$/) {
1010                $line .= '<span class="info"> (' .
1011                         file_type_long($1) .
1012                         ')</span>';
1013        }
1014        # match <hash>
1015        if ($line =~ m/^index [0-9a-fA-F]{40},[0-9a-fA-F]{40}/) {
1016                # can match only for combined diff
1017                $line = 'index ';
1018                for (my $i = 0; $i < $diffinfo->{'nparents'}; $i++) {
1019                        if ($from->{'href'}[$i]) {
1020                                $line .= $cgi->a({-href=>$from->{'href'}[$i],
1021                                                  -class=>"hash"},
1022                                                 substr($diffinfo->{'from_id'}[$i],0,7));
1023                        } else {
1024                                $line .= '0' x 7;
1025                        }
1026                        # separator
1027                        $line .= ',' if ($i < $diffinfo->{'nparents'} - 1);
1028                }
1029                $line .= '..';
1030                if ($to->{'href'}) {
1031                        $line .= $cgi->a({-href=>$to->{'href'}, -class=>"hash"},
1032                                         substr($diffinfo->{'to_id'},0,7));
1033                } else {
1034                        $line .= '0' x 7;
1035                }
1036
1037        } elsif ($line =~ m/^index [0-9a-fA-F]{40}..[0-9a-fA-F]{40}/) {
1038                # can match only for ordinary diff
1039                my ($from_link, $to_link);
1040                if ($from->{'href'}) {
1041                        $from_link = $cgi->a({-href=>$from->{'href'}, -class=>"hash"},
1042                                             substr($diffinfo->{'from_id'},0,7));
1043                } else {
1044                        $from_link = '0' x 7;
1045                }
1046                if ($to->{'href'}) {
1047                        $to_link = $cgi->a({-href=>$to->{'href'}, -class=>"hash"},
1048                                           substr($diffinfo->{'to_id'},0,7));
1049                } else {
1050                        $to_link = '0' x 7;
1051                }
1052                my ($from_id, $to_id) = ($diffinfo->{'from_id'}, $diffinfo->{'to_id'});
1053                $line =~ s!$from_id\.\.$to_id!$from_link..$to_link!;
1054        }
1055
1056        return $line . "<br/>\n";
1057}
1058
1059# format from-file/to-file diff header
1060sub format_diff_from_to_header {
1061        my ($from_line, $to_line, $diffinfo, $from, $to) = @_;
1062        my $line;
1063        my $result = '';
1064
1065        $line = $from_line;
1066        #assert($line =~ m/^---/) if DEBUG;
1067        # no extra formatting for "^--- /dev/null"
1068        if (! $diffinfo->{'nparents'}) {
1069                # ordinary (single parent) diff
1070                if ($line =~ m!^--- "?a/!) {
1071                        if ($from->{'href'}) {
1072                                $line = '--- a/' .
1073                                        $cgi->a({-href=>$from->{'href'}, -class=>"path"},
1074                                                esc_path($from->{'file'}));
1075                        } else {
1076                                $line = '--- a/' .
1077                                        esc_path($from->{'file'});
1078                        }
1079                }
1080                $result .= qq!<div class="diff from_file">$line</div>\n!;
1081
1082        } else {
1083                # combined diff (merge commit)
1084                for (my $i = 0; $i < $diffinfo->{'nparents'}; $i++) {
1085                        if ($from->{'href'}[$i]) {
1086                                $line = '--- ' .
1087                                        ($i+1) . "/" .
1088                                        $cgi->a({-href=>$from->{'href'}[$i], -class=>"path"},
1089                                                esc_path($from->{'file'}[$i]));
1090                        } else {
1091                                $line = '--- /dev/null';
1092                        }
1093                        $result .= qq!<div class="diff from_file">$line</div>\n!;
1094                }
1095        }
1096
1097        $line = $to_line;
1098        #assert($line =~ m/^\+\+\+/) if DEBUG;
1099        # no extra formatting for "^+++ /dev/null"
1100        if ($line =~ m!^\+\+\+ "?b/!) {
1101                if ($to->{'href'}) {
1102                        $line = '+++ b/' .
1103                                $cgi->a({-href=>$to->{'href'}, -class=>"path"},
1104                                        esc_path($to->{'file'}));
1105                } else {
1106                        $line = '+++ b/' .
1107                                esc_path($to->{'file'});
1108                }
1109        }
1110        $result .= qq!<div class="diff to_file">$line</div>\n!;
1111
1112        return $result;
1113}
1114
1115# format patch (diff) line (not to be used for diff headers)
1116sub format_diff_line {
1117        my $line = shift;
1118        my ($from, $to) = @_;
1119        my $diff_class = "";
1120
1121        chomp $line;
1122
1123        if ($from && $to && ref($from->{'href'}) eq "ARRAY") {
1124                # combined diff
1125                my $prefix = substr($line, 0, scalar @{$from->{'href'}});
1126                if ($line =~ m/^\@{3}/) {
1127                        $diff_class = " chunk_header";
1128                } elsif ($line =~ m/^\\/) {
1129                        $diff_class = " incomplete";
1130                } elsif ($prefix =~ tr/+/+/) {
1131                        $diff_class = " add";
1132                } elsif ($prefix =~ tr/-/-/) {
1133                        $diff_class = " rem";
1134                }
1135        } else {
1136                # assume ordinary diff
1137                my $char = substr($line, 0, 1);
1138                if ($char eq '+') {
1139                        $diff_class = " add";
1140                } elsif ($char eq '-') {
1141                        $diff_class = " rem";
1142                } elsif ($char eq '@') {
1143                        $diff_class = " chunk_header";
1144                } elsif ($char eq "\\") {
1145                        $diff_class = " incomplete";
1146                }
1147        }
1148        $line = untabify($line);
1149        if ($from && $to && $line =~ m/^\@{2} /) {
1150                my ($from_text, $from_start, $from_lines, $to_text, $to_start, $to_lines, $section) =
1151                        $line =~ m/^\@{2} (-(\d+)(?:,(\d+))?) (\+(\d+)(?:,(\d+))?) \@{2}(.*)$/;
1152
1153                $from_lines = 0 unless defined $from_lines;
1154                $to_lines   = 0 unless defined $to_lines;
1155
1156                if ($from->{'href'}) {
1157                        $from_text = $cgi->a({-href=>"$from->{'href'}#l$from_start",
1158                                             -class=>"list"}, $from_text);
1159                }
1160                if ($to->{'href'}) {
1161                        $to_text   = $cgi->a({-href=>"$to->{'href'}#l$to_start",
1162                                             -class=>"list"}, $to_text);
1163                }
1164                $line = "<span class=\"chunk_info\">@@ $from_text $to_text @@</span>" .
1165                        "<span class=\"section\">" . esc_html($section, -nbsp=>1) . "</span>";
1166                return "<div class=\"diff$diff_class\">$line</div>\n";
1167        } elsif ($from && $to && $line =~ m/^\@{3}/) {
1168                my ($prefix, $ranges, $section) = $line =~ m/^(\@+) (.*?) \@+(.*)$/;
1169                my (@from_text, @from_start, @from_nlines, $to_text, $to_start, $to_nlines);
1170
1171                @from_text = split(' ', $ranges);
1172                for (my $i = 0; $i < @from_text; ++$i) {
1173                        ($from_start[$i], $from_nlines[$i]) =
1174                                (split(',', substr($from_text[$i], 1)), 0);
1175                }
1176
1177                $to_text   = pop @from_text;
1178                $to_start  = pop @from_start;
1179                $to_nlines = pop @from_nlines;
1180
1181                $line = "<span class=\"chunk_info\">$prefix ";
1182                for (my $i = 0; $i < @from_text; ++$i) {
1183                        if ($from->{'href'}[$i]) {
1184                                $line .= $cgi->a({-href=>"$from->{'href'}[$i]#l$from_start[$i]",
1185                                                  -class=>"list"}, $from_text[$i]);
1186                        } else {
1187                                $line .= $from_text[$i];
1188                        }
1189                        $line .= " ";
1190                }
1191                if ($to->{'href'}) {
1192                        $line .= $cgi->a({-href=>"$to->{'href'}#l$to_start",
1193                                          -class=>"list"}, $to_text);
1194                } else {
1195                        $line .= $to_text;
1196                }
1197                $line .= " $prefix</span>" .
1198                         "<span class=\"section\">" . esc_html($section, -nbsp=>1) . "</span>";
1199                return "<div class=\"diff$diff_class\">$line</div>\n";
1200        }
1201        return "<div class=\"diff$diff_class\">" . esc_html($line, -nbsp=>1) . "</div>\n";
1202}
1203
1204## ----------------------------------------------------------------------
1205## git utility subroutines, invoking git commands
1206
1207# returns path to the core git executable and the --git-dir parameter as list
1208sub git_cmd {
1209        return $GIT, '--git-dir='.$git_dir;
1210}
1211
1212# returns path to the core git executable and the --git-dir parameter as string
1213sub git_cmd_str {
1214        return join(' ', git_cmd());
1215}
1216
1217# get HEAD ref of given project as hash
1218sub git_get_head_hash {
1219        my $project = shift;
1220        my $o_git_dir = $git_dir;
1221        my $retval = undef;
1222        $git_dir = "$projectroot/$project";
1223        if (open my $fd, "-|", git_cmd(), "rev-parse", "--verify", "HEAD") {
1224                my $head = <$fd>;
1225                close $fd;
1226                if (defined $head && $head =~ /^([0-9a-fA-F]{40})$/) {
1227                        $retval = $1;
1228                }
1229        }
1230        if (defined $o_git_dir) {
1231                $git_dir = $o_git_dir;
1232        }
1233        return $retval;
1234}
1235
1236# get type of given object
1237sub git_get_type {
1238        my $hash = shift;
1239
1240        open my $fd, "-|", git_cmd(), "cat-file", '-t', $hash or return;
1241        my $type = <$fd>;
1242        close $fd or return;
1243        chomp $type;
1244        return $type;
1245}
1246
1247sub git_get_project_config {
1248        my ($key, $type) = @_;
1249
1250        return unless ($key);
1251        $key =~ s/^gitweb\.//;
1252        return if ($key =~ m/\W/);
1253
1254        my @x = (git_cmd(), 'config');
1255        if (defined $type) { push @x, $type; }
1256        push @x, "--get";
1257        push @x, "gitweb.$key";
1258        my $val = qx(@x);
1259        chomp $val;
1260        return ($val);
1261}
1262
1263# get hash of given path at given ref
1264sub git_get_hash_by_path {
1265        my $base = shift;
1266        my $path = shift || return undef;
1267        my $type = shift;
1268
1269        $path =~ s,/+$,,;
1270
1271        open my $fd, "-|", git_cmd(), "ls-tree", $base, "--", $path
1272                or die_error(undef, "Open git-ls-tree failed");
1273        my $line = <$fd>;
1274        close $fd or return undef;
1275
1276        if (!defined $line) {
1277                # there is no tree or hash given by $path at $base
1278                return undef;
1279        }
1280
1281        #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
1282        $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t/;
1283        if (defined $type && $type ne $2) {
1284                # type doesn't match
1285                return undef;
1286        }
1287        return $3;
1288}
1289
1290# get path of entry with given hash at given tree-ish (ref)
1291# used to get 'from' filename for combined diff (merge commit) for renames
1292sub git_get_path_by_hash {
1293        my $base = shift || return;
1294        my $hash = shift || return;
1295
1296        local $/ = "\0";
1297
1298        open my $fd, "-|", git_cmd(), "ls-tree", '-r', '-t', '-z', $base
1299                or return undef;
1300        while (my $line = <$fd>) {
1301                chomp $line;
1302
1303                #'040000 tree 595596a6a9117ddba9fe379b6b012b558bac8423  gitweb'
1304                #'100644 blob e02e90f0429be0d2a69b76571101f20b8f75530f  gitweb/README'
1305                if ($line =~ m/(?:[0-9]+) (?:.+) $hash\t(.+)$/) {
1306                        close $fd;
1307                        return $1;
1308                }
1309        }
1310        close $fd;
1311        return undef;
1312}
1313
1314## ......................................................................
1315## git utility functions, directly accessing git repository
1316
1317sub git_get_project_description {
1318        my $path = shift;
1319
1320        open my $fd, "$projectroot/$path/description" or return undef;
1321        my $descr = <$fd>;
1322        close $fd;
1323        if (defined $descr) {
1324                chomp $descr;
1325        }
1326        return $descr;
1327}
1328
1329sub git_get_project_url_list {
1330        my $path = shift;
1331
1332        open my $fd, "$projectroot/$path/cloneurl" or return;
1333        my @git_project_url_list = map { chomp; $_ } <$fd>;
1334        close $fd;
1335
1336        return wantarray ? @git_project_url_list : \@git_project_url_list;
1337}
1338
1339sub git_get_projects_list {
1340        my ($filter) = @_;
1341        my @list;
1342
1343        $filter ||= '';
1344        $filter =~ s/\.git$//;
1345
1346        my ($check_forks) = gitweb_check_feature('forks');
1347
1348        if (-d $projects_list) {
1349                # search in directory
1350                my $dir = $projects_list . ($filter ? "/$filter" : '');
1351                # remove the trailing "/"
1352                $dir =~ s!/+$!!;
1353                my $pfxlen = length("$dir");
1354
1355                File::Find::find({
1356                        follow_fast => 1, # follow symbolic links
1357                        dangling_symlinks => 0, # ignore dangling symlinks, silently
1358                        wanted => sub {
1359                                # skip project-list toplevel, if we get it.
1360                                return if (m!^[/.]$!);
1361                                # only directories can be git repositories
1362                                return unless (-d $_);
1363
1364                                my $subdir = substr($File::Find::name, $pfxlen + 1);
1365                                # we check related file in $projectroot
1366                                if ($check_forks and $subdir =~ m#/.#) {
1367                                        $File::Find::prune = 1;
1368                                } elsif (check_export_ok("$projectroot/$filter/$subdir")) {
1369                                        push @list, { path => ($filter ? "$filter/" : '') . $subdir };
1370                                        $File::Find::prune = 1;
1371                                }
1372                        },
1373                }, "$dir");
1374
1375        } elsif (-f $projects_list) {
1376                # read from file(url-encoded):
1377                # 'git%2Fgit.git Linus+Torvalds'
1378                # 'libs%2Fklibc%2Fklibc.git H.+Peter+Anvin'
1379                # 'linux%2Fhotplug%2Fudev.git Greg+Kroah-Hartman'
1380                my %paths;
1381                open my ($fd), $projects_list or return;
1382        PROJECT:
1383                while (my $line = <$fd>) {
1384                        chomp $line;
1385                        my ($path, $owner) = split ' ', $line;
1386                        $path = unescape($path);
1387                        $owner = unescape($owner);
1388                        if (!defined $path) {
1389                                next;
1390                        }
1391                        if ($filter ne '') {
1392                                # looking for forks;
1393                                my $pfx = substr($path, 0, length($filter));
1394                                if ($pfx ne $filter) {
1395                                        next PROJECT;
1396                                }
1397                                my $sfx = substr($path, length($filter));
1398                                if ($sfx !~ /^\/.*\.git$/) {
1399                                        next PROJECT;
1400                                }
1401                        } elsif ($check_forks) {
1402                        PATH:
1403                                foreach my $filter (keys %paths) {
1404                                        # looking for forks;
1405                                        my $pfx = substr($path, 0, length($filter));
1406                                        if ($pfx ne $filter) {
1407                                                next PATH;
1408                                        }
1409                                        my $sfx = substr($path, length($filter));
1410                                        if ($sfx !~ /^\/.*\.git$/) {
1411                                                next PATH;
1412                                        }
1413                                        # is a fork, don't include it in
1414                                        # the list
1415                                        next PROJECT;
1416                                }
1417                        }
1418                        if (check_export_ok("$projectroot/$path")) {
1419                                my $pr = {
1420                                        path => $path,
1421                                        owner => to_utf8($owner),
1422                                };
1423                                push @list, $pr;
1424                                (my $forks_path = $path) =~ s/\.git$//;
1425                                $paths{$forks_path}++;
1426                        }
1427                }
1428                close $fd;
1429        }
1430        return @list;
1431}
1432
1433sub git_get_project_owner {
1434        my $project = shift;
1435        my $owner;
1436
1437        return undef unless $project;
1438
1439        # read from file (url-encoded):
1440        # 'git%2Fgit.git Linus+Torvalds'
1441        # 'libs%2Fklibc%2Fklibc.git H.+Peter+Anvin'
1442        # 'linux%2Fhotplug%2Fudev.git Greg+Kroah-Hartman'
1443        if (-f $projects_list) {
1444                open (my $fd , $projects_list);
1445                while (my $line = <$fd>) {
1446                        chomp $line;
1447                        my ($pr, $ow) = split ' ', $line;
1448                        $pr = unescape($pr);
1449                        $ow = unescape($ow);
1450                        if ($pr eq $project) {
1451                                $owner = to_utf8($ow);
1452                                last;
1453                        }
1454                }
1455                close $fd;
1456        }
1457        if (!defined $owner) {
1458                $owner = get_file_owner("$projectroot/$project");
1459        }
1460
1461        return $owner;
1462}
1463
1464sub git_get_last_activity {
1465        my ($path) = @_;
1466        my $fd;
1467
1468        $git_dir = "$projectroot/$path";
1469        open($fd, "-|", git_cmd(), 'for-each-ref',
1470             '--format=%(committer)',
1471             '--sort=-committerdate',
1472             '--count=1',
1473             'refs/heads') or return;
1474        my $most_recent = <$fd>;
1475        close $fd or return;
1476        if (defined $most_recent &&
1477            $most_recent =~ / (\d+) [-+][01]\d\d\d$/) {
1478                my $timestamp = $1;
1479                my $age = time - $timestamp;
1480                return ($age, age_string($age));
1481        }
1482}
1483
1484sub git_get_references {
1485        my $type = shift || "";
1486        my %refs;
1487        # 5dc01c595e6c6ec9ccda4f6f69c131c0dd945f8c refs/tags/v2.6.11
1488        # c39ae07f393806ccf406ef966e9a15afc43cc36a refs/tags/v2.6.11^{}
1489        open my $fd, "-|", git_cmd(), "show-ref", "--dereference",
1490                ($type ? ("--", "refs/$type") : ()) # use -- <pattern> if $type
1491                or return;
1492
1493        while (my $line = <$fd>) {
1494                chomp $line;
1495                if ($line =~ m!^([0-9a-fA-F]{40})\srefs/($type/?[^^]+)!) {
1496                        if (defined $refs{$1}) {
1497                                push @{$refs{$1}}, $2;
1498                        } else {
1499                                $refs{$1} = [ $2 ];
1500                        }
1501                }
1502        }
1503        close $fd or return;
1504        return \%refs;
1505}
1506
1507sub git_get_rev_name_tags {
1508        my $hash = shift || return undef;
1509
1510        open my $fd, "-|", git_cmd(), "name-rev", "--tags", $hash
1511                or return;
1512        my $name_rev = <$fd>;
1513        close $fd;
1514
1515        if ($name_rev =~ m|^$hash tags/(.*)$|) {
1516                return $1;
1517        } else {
1518                # catches also '$hash undefined' output
1519                return undef;
1520        }
1521}
1522
1523## ----------------------------------------------------------------------
1524## parse to hash functions
1525
1526sub parse_date {
1527        my $epoch = shift;
1528        my $tz = shift || "-0000";
1529
1530        my %date;
1531        my @months = ("Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec");
1532        my @days = ("Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat");
1533        my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($epoch);
1534        $date{'hour'} = $hour;
1535        $date{'minute'} = $min;
1536        $date{'mday'} = $mday;
1537        $date{'day'} = $days[$wday];
1538        $date{'month'} = $months[$mon];
1539        $date{'rfc2822'}   = sprintf "%s, %d %s %4d %02d:%02d:%02d +0000",
1540                             $days[$wday], $mday, $months[$mon], 1900+$year, $hour ,$min, $sec;
1541        $date{'mday-time'} = sprintf "%d %s %02d:%02d",
1542                             $mday, $months[$mon], $hour ,$min;
1543        $date{'iso-8601'}  = sprintf "%04d-%02d-%02dT%02d:%02d:%02dZ",
1544                             1900+$year, $mon, $mday, $hour ,$min, $sec;
1545
1546        $tz =~ m/^([+\-][0-9][0-9])([0-9][0-9])$/;
1547        my $local = $epoch + ((int $1 + ($2/60)) * 3600);
1548        ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($local);
1549        $date{'hour_local'} = $hour;
1550        $date{'minute_local'} = $min;
1551        $date{'tz_local'} = $tz;
1552        $date{'iso-tz'} = sprintf("%04d-%02d-%02d %02d:%02d:%02d %s",
1553                                  1900+$year, $mon+1, $mday,
1554                                  $hour, $min, $sec, $tz);
1555        return %date;
1556}
1557
1558sub parse_tag {
1559        my $tag_id = shift;
1560        my %tag;
1561        my @comment;
1562
1563        open my $fd, "-|", git_cmd(), "cat-file", "tag", $tag_id or return;
1564        $tag{'id'} = $tag_id;
1565        while (my $line = <$fd>) {
1566                chomp $line;
1567                if ($line =~ m/^object ([0-9a-fA-F]{40})$/) {
1568                        $tag{'object'} = $1;
1569                } elsif ($line =~ m/^type (.+)$/) {
1570                        $tag{'type'} = $1;
1571                } elsif ($line =~ m/^tag (.+)$/) {
1572                        $tag{'name'} = $1;
1573                } elsif ($line =~ m/^tagger (.*) ([0-9]+) (.*)$/) {
1574                        $tag{'author'} = $1;
1575                        $tag{'epoch'} = $2;
1576                        $tag{'tz'} = $3;
1577                } elsif ($line =~ m/--BEGIN/) {
1578                        push @comment, $line;
1579                        last;
1580                } elsif ($line eq "") {
1581                        last;
1582                }
1583        }
1584        push @comment, <$fd>;
1585        $tag{'comment'} = \@comment;
1586        close $fd or return;
1587        if (!defined $tag{'name'}) {
1588                return
1589        };
1590        return %tag
1591}
1592
1593sub parse_commit_text {
1594        my ($commit_text, $withparents) = @_;
1595        my @commit_lines = split '\n', $commit_text;
1596        my %co;
1597
1598        pop @commit_lines; # Remove '\0'
1599
1600        if (! @commit_lines) {
1601                return;
1602        }
1603
1604        my $header = shift @commit_lines;
1605        if ($header !~ m/^[0-9a-fA-F]{40}/) {
1606                return;
1607        }
1608        ($co{'id'}, my @parents) = split ' ', $header;
1609        while (my $line = shift @commit_lines) {
1610                last if $line eq "\n";
1611                if ($line =~ m/^tree ([0-9a-fA-F]{40})$/) {
1612                        $co{'tree'} = $1;
1613                } elsif ((!defined $withparents) && ($line =~ m/^parent ([0-9a-fA-F]{40})$/)) {
1614                        push @parents, $1;
1615                } elsif ($line =~ m/^author (.*) ([0-9]+) (.*)$/) {
1616                        $co{'author'} = $1;
1617                        $co{'author_epoch'} = $2;
1618                        $co{'author_tz'} = $3;
1619                        if ($co{'author'} =~ m/^([^<]+) <([^>]*)>/) {
1620                                $co{'author_name'}  = $1;
1621                                $co{'author_email'} = $2;
1622                        } else {
1623                                $co{'author_name'} = $co{'author'};
1624                        }
1625                } elsif ($line =~ m/^committer (.*) ([0-9]+) (.*)$/) {
1626                        $co{'committer'} = $1;
1627                        $co{'committer_epoch'} = $2;
1628                        $co{'committer_tz'} = $3;
1629                        $co{'committer_name'} = $co{'committer'};
1630                        if ($co{'committer'} =~ m/^([^<]+) <([^>]*)>/) {
1631                                $co{'committer_name'}  = $1;
1632                                $co{'committer_email'} = $2;
1633                        } else {
1634                                $co{'committer_name'} = $co{'committer'};
1635                        }
1636                }
1637        }
1638        if (!defined $co{'tree'}) {
1639                return;
1640        };
1641        $co{'parents'} = \@parents;
1642        $co{'parent'} = $parents[0];
1643
1644        foreach my $title (@commit_lines) {
1645                $title =~ s/^    //;
1646                if ($title ne "") {
1647                        $co{'title'} = chop_str($title, 80, 5);
1648                        # remove leading stuff of merges to make the interesting part visible
1649                        if (length($title) > 50) {
1650                                $title =~ s/^Automatic //;
1651                                $title =~ s/^merge (of|with) /Merge ... /i;
1652                                if (length($title) > 50) {
1653                                        $title =~ s/(http|rsync):\/\///;
1654                                }
1655                                if (length($title) > 50) {
1656                                        $title =~ s/(master|www|rsync)\.//;
1657                                }
1658                                if (length($title) > 50) {
1659                                        $title =~ s/kernel.org:?//;
1660                                }
1661                                if (length($title) > 50) {
1662                                        $title =~ s/\/pub\/scm//;
1663                                }
1664                        }
1665                        $co{'title_short'} = chop_str($title, 50, 5);
1666                        last;
1667                }
1668        }
1669        if ($co{'title'} eq "") {
1670                $co{'title'} = $co{'title_short'} = '(no commit message)';
1671        }
1672        # remove added spaces
1673        foreach my $line (@commit_lines) {
1674                $line =~ s/^    //;
1675        }
1676        $co{'comment'} = \@commit_lines;
1677
1678        my $age = time - $co{'committer_epoch'};
1679        $co{'age'} = $age;
1680        $co{'age_string'} = age_string($age);
1681        my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($co{'committer_epoch'});
1682        if ($age > 60*60*24*7*2) {
1683                $co{'age_string_date'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
1684                $co{'age_string_age'} = $co{'age_string'};
1685        } else {
1686                $co{'age_string_date'} = $co{'age_string'};
1687                $co{'age_string_age'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
1688        }
1689        return %co;
1690}
1691
1692sub parse_commit {
1693        my ($commit_id) = @_;
1694        my %co;
1695
1696        local $/ = "\0";
1697
1698        open my $fd, "-|", git_cmd(), "rev-list",
1699                "--parents",
1700                "--header",
1701                "--max-count=1",
1702                $commit_id,
1703                "--",
1704                or die_error(undef, "Open git-rev-list failed");
1705        %co = parse_commit_text(<$fd>, 1);
1706        close $fd;
1707
1708        return %co;
1709}
1710
1711sub parse_commits {
1712        my ($commit_id, $maxcount, $skip, $arg, $filename) = @_;
1713        my @cos;
1714
1715        $maxcount ||= 1;
1716        $skip ||= 0;
1717
1718        local $/ = "\0";
1719
1720        open my $fd, "-|", git_cmd(), "rev-list",
1721                "--header",
1722                ($arg ? ($arg) : ()),
1723                ("--max-count=" . $maxcount),
1724                ("--skip=" . $skip),
1725                $commit_id,
1726                "--",
1727                ($filename ? ($filename) : ())
1728                or die_error(undef, "Open git-rev-list failed");
1729        while (my $line = <$fd>) {
1730                my %co = parse_commit_text($line);
1731                push @cos, \%co;
1732        }
1733        close $fd;
1734
1735        return wantarray ? @cos : \@cos;
1736}
1737
1738# parse ref from ref_file, given by ref_id, with given type
1739sub parse_ref {
1740        my $ref_file = shift;
1741        my $ref_id = shift;
1742        my $type = shift || git_get_type($ref_id);
1743        my %ref_item;
1744
1745        $ref_item{'type'} = $type;
1746        $ref_item{'id'} = $ref_id;
1747        $ref_item{'epoch'} = 0;
1748        $ref_item{'age'} = "unknown";
1749        if ($type eq "tag") {
1750                my %tag = parse_tag($ref_id);
1751                $ref_item{'comment'} = $tag{'comment'};
1752                if ($tag{'type'} eq "commit") {
1753                        my %co = parse_commit($tag{'object'});
1754                        $ref_item{'epoch'} = $co{'committer_epoch'};
1755                        $ref_item{'age'} = $co{'age_string'};
1756                } elsif (defined($tag{'epoch'})) {
1757                        my $age = time - $tag{'epoch'};
1758                        $ref_item{'epoch'} = $tag{'epoch'};
1759                        $ref_item{'age'} = age_string($age);
1760                }
1761                $ref_item{'reftype'} = $tag{'type'};
1762                $ref_item{'name'} = $tag{'name'};
1763                $ref_item{'refid'} = $tag{'object'};
1764        } elsif ($type eq "commit"){
1765                my %co = parse_commit($ref_id);
1766                $ref_item{'reftype'} = "commit";
1767                $ref_item{'name'} = $ref_file;
1768                $ref_item{'title'} = $co{'title'};
1769                $ref_item{'refid'} = $ref_id;
1770                $ref_item{'epoch'} = $co{'committer_epoch'};
1771                $ref_item{'age'} = $co{'age_string'};
1772        } else {
1773                $ref_item{'reftype'} = $type;
1774                $ref_item{'name'} = $ref_file;
1775                $ref_item{'refid'} = $ref_id;
1776        }
1777
1778        return %ref_item;
1779}
1780
1781# parse line of git-diff-tree "raw" output
1782sub parse_difftree_raw_line {
1783        my $line = shift;
1784        my %res;
1785
1786        # ':100644 100644 03b218260e99b78c6df0ed378e59ed9205ccc96d 3b93d5e7cc7f7dd4ebed13a5cc1a4ad976fc94d8 M   ls-files.c'
1787        # ':100644 100644 7f9281985086971d3877aca27704f2aaf9c448ce bc190ebc71bbd923f2b728e505408f5e54bd073a M   rev-tree.c'
1788        if ($line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)([0-9]{0,3})\t(.*)$/) {
1789                $res{'from_mode'} = $1;
1790                $res{'to_mode'} = $2;
1791                $res{'from_id'} = $3;
1792                $res{'to_id'} = $4;
1793                $res{'status'} = $5;
1794                $res{'similarity'} = $6;
1795                if ($res{'status'} eq 'R' || $res{'status'} eq 'C') { # renamed or copied
1796                        ($res{'from_file'}, $res{'to_file'}) = map { unquote($_) } split("\t", $7);
1797                } else {
1798                        $res{'file'} = unquote($7);
1799                }
1800        }
1801        # '::100755 100755 100755 60e79ca1b01bc8b057abe17ddab484699a7f5fdb 94067cc5f73388f33722d52ae02f44692bc07490 94067cc5f73388f33722d52ae02f44692bc07490 MR git-gui/git-gui.sh'
1802        # combined diff (for merge commit)
1803        elsif ($line =~ s/^(::+)((?:[0-7]{6} )+)((?:[0-9a-fA-F]{40} )+)([a-zA-Z]+)\t(.*)$//) {
1804                $res{'nparents'}  = length($1);
1805                $res{'from_mode'} = [ split(' ', $2) ];
1806                $res{'to_mode'} = pop @{$res{'from_mode'}};
1807                $res{'from_id'} = [ split(' ', $3) ];
1808                $res{'to_id'} = pop @{$res{'from_id'}};
1809                $res{'status'} = [ split('', $4) ];
1810                $res{'to_file'} = unquote($5);
1811        }
1812        # 'c512b523472485aef4fff9e57b229d9d243c967f'
1813        elsif ($line =~ m/^([0-9a-fA-F]{40})$/) {
1814                $res{'commit'} = $1;
1815        }
1816
1817        return wantarray ? %res : \%res;
1818}
1819
1820# parse line of git-ls-tree output
1821sub parse_ls_tree_line ($;%) {
1822        my $line = shift;
1823        my %opts = @_;
1824        my %res;
1825
1826        #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
1827        $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t(.+)$/s;
1828
1829        $res{'mode'} = $1;
1830        $res{'type'} = $2;
1831        $res{'hash'} = $3;
1832        if ($opts{'-z'}) {
1833                $res{'name'} = $4;
1834        } else {
1835                $res{'name'} = unquote($4);
1836        }
1837
1838        return wantarray ? %res : \%res;
1839}
1840
1841# generates _two_ hashes, references to which are passed as 2 and 3 argument
1842sub parse_from_to_diffinfo {
1843        my ($diffinfo, $from, $to, @parents) = @_;
1844
1845        if ($diffinfo->{'nparents'}) {
1846                # combined diff
1847                $from->{'file'} = [];
1848                $from->{'href'} = [];
1849                fill_from_file_info($diffinfo, @parents)
1850                        unless exists $diffinfo->{'from_file'};
1851                for (my $i = 0; $i < $diffinfo->{'nparents'}; $i++) {
1852                        $from->{'file'}[$i] = $diffinfo->{'from_file'}[$i] || $diffinfo->{'to_file'};
1853                        if ($diffinfo->{'status'}[$i] ne "A") { # not new (added) file
1854                                $from->{'href'}[$i] = href(action=>"blob",
1855                                                           hash_base=>$parents[$i],
1856                                                           hash=>$diffinfo->{'from_id'}[$i],
1857                                                           file_name=>$from->{'file'}[$i]);
1858                        } else {
1859                                $from->{'href'}[$i] = undef;
1860                        }
1861                }
1862        } else {
1863                $from->{'file'} = $diffinfo->{'from_file'} || $diffinfo->{'file'};
1864                if ($diffinfo->{'status'} ne "A") { # not new (added) file
1865                        $from->{'href'} = href(action=>"blob", hash_base=>$hash_parent,
1866                                               hash=>$diffinfo->{'from_id'},
1867                                               file_name=>$from->{'file'});
1868                } else {
1869                        delete $from->{'href'};
1870                }
1871        }
1872
1873        $to->{'file'} = $diffinfo->{'to_file'} || $diffinfo->{'file'};
1874        if (!is_deleted($diffinfo)) { # file exists in result
1875                $to->{'href'} = href(action=>"blob", hash_base=>$hash,
1876                                     hash=>$diffinfo->{'to_id'},
1877                                     file_name=>$to->{'file'});
1878        } else {
1879                delete $to->{'href'};
1880        }
1881}
1882
1883## ......................................................................
1884## parse to array of hashes functions
1885
1886sub git_get_heads_list {
1887        my $limit = shift;
1888        my @headslist;
1889
1890        open my $fd, '-|', git_cmd(), 'for-each-ref',
1891                ($limit ? '--count='.($limit+1) : ()), '--sort=-committerdate',
1892                '--format=%(objectname) %(refname) %(subject)%00%(committer)',
1893                'refs/heads'
1894                or return;
1895        while (my $line = <$fd>) {
1896                my %ref_item;
1897
1898                chomp $line;
1899                my ($refinfo, $committerinfo) = split(/\0/, $line);
1900                my ($hash, $name, $title) = split(' ', $refinfo, 3);
1901                my ($committer, $epoch, $tz) =
1902                        ($committerinfo =~ /^(.*) ([0-9]+) (.*)$/);
1903                $name =~ s!^refs/heads/!!;
1904
1905                $ref_item{'name'}  = $name;
1906                $ref_item{'id'}    = $hash;
1907                $ref_item{'title'} = $title || '(no commit message)';
1908                $ref_item{'epoch'} = $epoch;
1909                if ($epoch) {
1910                        $ref_item{'age'} = age_string(time - $ref_item{'epoch'});
1911                } else {
1912                        $ref_item{'age'} = "unknown";
1913                }
1914
1915                push @headslist, \%ref_item;
1916        }
1917        close $fd;
1918
1919        return wantarray ? @headslist : \@headslist;
1920}
1921
1922sub git_get_tags_list {
1923        my $limit = shift;
1924        my @tagslist;
1925
1926        open my $fd, '-|', git_cmd(), 'for-each-ref',
1927                ($limit ? '--count='.($limit+1) : ()), '--sort=-creatordate',
1928                '--format=%(objectname) %(objecttype) %(refname) '.
1929                '%(*objectname) %(*objecttype) %(subject)%00%(creator)',
1930                'refs/tags'
1931                or return;
1932        while (my $line = <$fd>) {
1933                my %ref_item;
1934
1935                chomp $line;
1936                my ($refinfo, $creatorinfo) = split(/\0/, $line);
1937                my ($id, $type, $name, $refid, $reftype, $title) = split(' ', $refinfo, 6);
1938                my ($creator, $epoch, $tz) =
1939                        ($creatorinfo =~ /^(.*) ([0-9]+) (.*)$/);
1940                $name =~ s!^refs/tags/!!;
1941
1942                $ref_item{'type'} = $type;
1943                $ref_item{'id'} = $id;
1944                $ref_item{'name'} = $name;
1945                if ($type eq "tag") {
1946                        $ref_item{'subject'} = $title;
1947                        $ref_item{'reftype'} = $reftype;
1948                        $ref_item{'refid'}   = $refid;
1949                } else {
1950                        $ref_item{'reftype'} = $type;
1951                        $ref_item{'refid'}   = $id;
1952                }
1953
1954                if ($type eq "tag" || $type eq "commit") {
1955                        $ref_item{'epoch'} = $epoch;
1956                        if ($epoch) {
1957                                $ref_item{'age'} = age_string(time - $ref_item{'epoch'});
1958                        } else {
1959                                $ref_item{'age'} = "unknown";
1960                        }
1961                }
1962
1963                push @tagslist, \%ref_item;
1964        }
1965        close $fd;
1966
1967        return wantarray ? @tagslist : \@tagslist;
1968}
1969
1970## ----------------------------------------------------------------------
1971## filesystem-related functions
1972
1973sub get_file_owner {
1974        my $path = shift;
1975
1976        my ($dev, $ino, $mode, $nlink, $st_uid, $st_gid, $rdev, $size) = stat($path);
1977        my ($name, $passwd, $uid, $gid, $quota, $comment, $gcos, $dir, $shell) = getpwuid($st_uid);
1978        if (!defined $gcos) {
1979                return undef;
1980        }
1981        my $owner = $gcos;
1982        $owner =~ s/[,;].*$//;
1983        return to_utf8($owner);
1984}
1985
1986## ......................................................................
1987## mimetype related functions
1988
1989sub mimetype_guess_file {
1990        my $filename = shift;
1991        my $mimemap = shift;
1992        -r $mimemap or return undef;
1993
1994        my %mimemap;
1995        open(MIME, $mimemap) or return undef;
1996        while (<MIME>) {
1997                next if m/^#/; # skip comments
1998                my ($mime, $exts) = split(/\t+/);
1999                if (defined $exts) {
2000                        my @exts = split(/\s+/, $exts);
2001                        foreach my $ext (@exts) {
2002                                $mimemap{$ext} = $mime;
2003                        }
2004                }
2005        }
2006        close(MIME);
2007
2008        $filename =~ /\.([^.]*)$/;
2009        return $mimemap{$1};
2010}
2011
2012sub mimetype_guess {
2013        my $filename = shift;
2014        my $mime;
2015        $filename =~ /\./ or return undef;
2016
2017        if ($mimetypes_file) {
2018                my $file = $mimetypes_file;
2019                if ($file !~ m!^/!) { # if it is relative path
2020                        # it is relative to project
2021                        $file = "$projectroot/$project/$file";
2022                }
2023                $mime = mimetype_guess_file($filename, $file);
2024        }
2025        $mime ||= mimetype_guess_file($filename, '/etc/mime.types');
2026        return $mime;
2027}
2028
2029sub blob_mimetype {
2030        my $fd = shift;
2031        my $filename = shift;
2032
2033        if ($filename) {
2034                my $mime = mimetype_guess($filename);
2035                $mime and return $mime;
2036        }
2037
2038        # just in case
2039        return $default_blob_plain_mimetype unless $fd;
2040
2041        if (-T $fd) {
2042                return 'text/plain' .
2043                       ($default_text_plain_charset ? '; charset='.$default_text_plain_charset : '');
2044        } elsif (! $filename) {
2045                return 'application/octet-stream';
2046        } elsif ($filename =~ m/\.png$/i) {
2047                return 'image/png';
2048        } elsif ($filename =~ m/\.gif$/i) {
2049                return 'image/gif';
2050        } elsif ($filename =~ m/\.jpe?g$/i) {
2051                return 'image/jpeg';
2052        } else {
2053                return 'application/octet-stream';
2054        }
2055}
2056
2057## ======================================================================
2058## functions printing HTML: header, footer, error page
2059
2060sub git_header_html {
2061        my $status = shift || "200 OK";
2062        my $expires = shift;
2063
2064        my $title = "$site_name";
2065        if (defined $project) {
2066                $title .= " - " . to_utf8($project);
2067                if (defined $action) {
2068                        $title .= "/$action";
2069                        if (defined $file_name) {
2070                                $title .= " - " . esc_path($file_name);
2071                                if ($action eq "tree" && $file_name !~ m|/$|) {
2072                                        $title .= "/";
2073                                }
2074                        }
2075                }
2076        }
2077        my $content_type;
2078        # require explicit support from the UA if we are to send the page as
2079        # 'application/xhtml+xml', otherwise send it as plain old 'text/html'.
2080        # we have to do this because MSIE sometimes globs '*/*', pretending to
2081        # support xhtml+xml but choking when it gets what it asked for.
2082        if (defined $cgi->http('HTTP_ACCEPT') &&
2083            $cgi->http('HTTP_ACCEPT') =~ m/(,|;|\s|^)application\/xhtml\+xml(,|;|\s|$)/ &&
2084            $cgi->Accept('application/xhtml+xml') != 0) {
2085                $content_type = 'application/xhtml+xml';
2086        } else {
2087                $content_type = 'text/html';
2088        }
2089        print $cgi->header(-type=>$content_type, -charset => 'utf-8',
2090                           -status=> $status, -expires => $expires);
2091        my $mod_perl_version = $ENV{'MOD_PERL'} ? " $ENV{'MOD_PERL'}" : '';
2092        print <<EOF;
2093<?xml version="1.0" encoding="utf-8"?>
2094<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
2095<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en-US" lang="en-US">
2096<!-- git web interface version $version, (C) 2005-2006, Kay Sievers <kay.sievers\@vrfy.org>, Christian Gierke -->
2097<!-- git core binaries version $git_version -->
2098<head>
2099<meta http-equiv="content-type" content="$content_type; charset=utf-8"/>
2100<meta name="generator" content="gitweb/$version git/$git_version$mod_perl_version"/>
2101<meta name="robots" content="index, nofollow"/>
2102<title>$title</title>
2103EOF
2104# print out each stylesheet that exist
2105        if (defined $stylesheet) {
2106#provides backwards capability for those people who define style sheet in a config file
2107                print '<link rel="stylesheet" type="text/css" href="'.$stylesheet.'"/>'."\n";
2108        } else {
2109                foreach my $stylesheet (@stylesheets) {
2110                        next unless $stylesheet;
2111                        print '<link rel="stylesheet" type="text/css" href="'.$stylesheet.'"/>'."\n";
2112                }
2113        }
2114        if (defined $project) {
2115                printf('<link rel="alternate" title="%s log RSS feed" '.
2116                       'href="%s" type="application/rss+xml" />'."\n",
2117                       esc_param($project), href(action=>"rss"));
2118                printf('<link rel="alternate" title="%s log Atom feed" '.
2119                       'href="%s" type="application/atom+xml" />'."\n",
2120                       esc_param($project), href(action=>"atom"));
2121        } else {
2122                printf('<link rel="alternate" title="%s projects list" '.
2123                       'href="%s" type="text/plain; charset=utf-8"/>'."\n",
2124                       $site_name, href(project=>undef, action=>"project_index"));
2125                printf('<link rel="alternate" title="%s projects feeds" '.
2126                       'href="%s" type="text/x-opml"/>'."\n",
2127                       $site_name, href(project=>undef, action=>"opml"));
2128        }
2129        if (defined $favicon) {
2130                print qq(<link rel="shortcut icon" href="$favicon" type="image/png"/>\n);
2131        }
2132
2133        print "</head>\n" .
2134              "<body>\n";
2135
2136        if (-f $site_header) {
2137                open (my $fd, $site_header);
2138                print <$fd>;
2139                close $fd;
2140        }
2141
2142        print "<div class=\"page_header\">\n" .
2143              $cgi->a({-href => esc_url($logo_url),
2144                       -title => $logo_label},
2145                      qq(<img src="$logo" width="72" height="27" alt="git" class="logo"/>));
2146        print $cgi->a({-href => esc_url($home_link)}, $home_link_str) . " / ";
2147        if (defined $project) {
2148                print $cgi->a({-href => href(action=>"summary")}, esc_html($project));
2149                if (defined $action) {
2150                        print " / $action";
2151                }
2152                print "\n";
2153        }
2154        print "</div>\n";
2155
2156        my ($have_search) = gitweb_check_feature('search');
2157        if ((defined $project) && ($have_search)) {
2158                if (!defined $searchtext) {
2159                        $searchtext = "";
2160                }
2161                my $search_hash;
2162                if (defined $hash_base) {
2163                        $search_hash = $hash_base;
2164                } elsif (defined $hash) {
2165                        $search_hash = $hash;
2166                } else {
2167                        $search_hash = "HEAD";
2168                }
2169                $cgi->param("a", "search");
2170                $cgi->param("h", $search_hash);
2171                $cgi->param("p", $project);
2172                print $cgi->startform(-method => "get", -action => $my_uri) .
2173                      "<div class=\"search\">\n" .
2174                      $cgi->hidden(-name => "p") . "\n" .
2175                      $cgi->hidden(-name => "a") . "\n" .
2176                      $cgi->hidden(-name => "h") . "\n" .
2177                      $cgi->popup_menu(-name => 'st', -default => 'commit',
2178                                       -values => ['commit', 'grep', 'author', 'committer', 'pickaxe']) .
2179                      $cgi->sup($cgi->a({-href => href(action=>"search_help")}, "?")) .
2180                      " search:\n",
2181                      $cgi->textfield(-name => "s", -value => $searchtext) . "\n" .
2182                      "</div>" .
2183                      $cgi->end_form() . "\n";
2184        }
2185}
2186
2187sub git_footer_html {
2188        print "<div class=\"page_footer\">\n";
2189        if (defined $project) {
2190                my $descr = git_get_project_description($project);
2191                if (defined $descr) {
2192                        print "<div class=\"page_footer_text\">" . esc_html($descr) . "</div>\n";
2193                }
2194                print $cgi->a({-href => href(action=>"rss"),
2195                              -class => "rss_logo"}, "RSS") . " ";
2196                print $cgi->a({-href => href(action=>"atom"),
2197                              -class => "rss_logo"}, "Atom") . "\n";
2198        } else {
2199                print $cgi->a({-href => href(project=>undef, action=>"opml"),
2200                              -class => "rss_logo"}, "OPML") . " ";
2201                print $cgi->a({-href => href(project=>undef, action=>"project_index"),
2202                              -class => "rss_logo"}, "TXT") . "\n";
2203        }
2204        print "</div>\n" ;
2205
2206        if (-f $site_footer) {
2207                open (my $fd, $site_footer);
2208                print <$fd>;
2209                close $fd;
2210        }
2211
2212        print "</body>\n" .
2213              "</html>";
2214}
2215
2216sub die_error {
2217        my $status = shift || "403 Forbidden";
2218        my $error = shift || "Malformed query, file missing or permission denied";
2219
2220        git_header_html($status);
2221        print <<EOF;
2222<div class="page_body">
2223<br /><br />
2224$status - $error
2225<br />
2226</div>
2227EOF
2228        git_footer_html();
2229        exit;
2230}
2231
2232## ----------------------------------------------------------------------
2233## functions printing or outputting HTML: navigation
2234
2235sub git_print_page_nav {
2236        my ($current, $suppress, $head, $treehead, $treebase, $extra) = @_;
2237        $extra = '' if !defined $extra; # pager or formats
2238
2239        my @navs = qw(summary shortlog log commit commitdiff tree);
2240        if ($suppress) {
2241                @navs = grep { $_ ne $suppress } @navs;
2242        }
2243
2244        my %arg = map { $_ => {action=>$_} } @navs;
2245        if (defined $head) {
2246                for (qw(commit commitdiff)) {
2247                        $arg{$_}{'hash'} = $head;
2248                }
2249                if ($current =~ m/^(tree | log | shortlog | commit | commitdiff | search)$/x) {
2250                        for (qw(shortlog log)) {
2251                                $arg{$_}{'hash'} = $head;
2252                        }
2253                }
2254        }
2255        $arg{'tree'}{'hash'} = $treehead if defined $treehead;
2256        $arg{'tree'}{'hash_base'} = $treebase if defined $treebase;
2257
2258        print "<div class=\"page_nav\">\n" .
2259                (join " | ",
2260                 map { $_ eq $current ?
2261                       $_ : $cgi->a({-href => href(%{$arg{$_}})}, "$_")
2262                 } @navs);
2263        print "<br/>\n$extra<br/>\n" .
2264              "</div>\n";
2265}
2266
2267sub format_paging_nav {
2268        my ($action, $hash, $head, $page, $nrevs) = @_;
2269        my $paging_nav;
2270
2271
2272        if ($hash ne $head || $page) {
2273                $paging_nav .= $cgi->a({-href => href(action=>$action)}, "HEAD");
2274        } else {
2275                $paging_nav .= "HEAD";
2276        }
2277
2278        if ($page > 0) {
2279                $paging_nav .= " &sdot; " .
2280                        $cgi->a({-href => href(action=>$action, hash=>$hash, page=>$page-1),
2281                                 -accesskey => "p", -title => "Alt-p"}, "prev");
2282        } else {
2283                $paging_nav .= " &sdot; prev";
2284        }
2285
2286        if ($nrevs >= (100 * ($page+1)-1)) {
2287                $paging_nav .= " &sdot; " .
2288                        $cgi->a({-href => href(action=>$action, hash=>$hash, page=>$page+1),
2289                                 -accesskey => "n", -title => "Alt-n"}, "next");
2290        } else {
2291                $paging_nav .= " &sdot; next";
2292        }
2293
2294        return $paging_nav;
2295}
2296
2297## ......................................................................
2298## functions printing or outputting HTML: div
2299
2300sub git_print_header_div {
2301        my ($action, $title, $hash, $hash_base) = @_;
2302        my %args = ();
2303
2304        $args{'action'} = $action;
2305        $args{'hash'} = $hash if $hash;
2306        $args{'hash_base'} = $hash_base if $hash_base;
2307
2308        print "<div class=\"header\">\n" .
2309              $cgi->a({-href => href(%args), -class => "title"},
2310              $title ? $title : $action) .
2311              "\n</div>\n";
2312}
2313
2314#sub git_print_authorship (\%) {
2315sub git_print_authorship {
2316        my $co = shift;
2317
2318        my %ad = parse_date($co->{'author_epoch'}, $co->{'author_tz'});
2319        print "<div class=\"author_date\">" .
2320              esc_html($co->{'author_name'}) .
2321              " [$ad{'rfc2822'}";
2322        if ($ad{'hour_local'} < 6) {
2323                printf(" (<span class=\"atnight\">%02d:%02d</span> %s)",
2324                       $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
2325        } else {
2326                printf(" (%02d:%02d %s)",
2327                       $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
2328        }
2329        print "]</div>\n";
2330}
2331
2332sub git_print_page_path {
2333        my $name = shift;
2334        my $type = shift;
2335        my $hb = shift;
2336
2337
2338        print "<div class=\"page_path\">";
2339        print $cgi->a({-href => href(action=>"tree", hash_base=>$hb),
2340                      -title => 'tree root'}, to_utf8("[$project]"));
2341        print " / ";
2342        if (defined $name) {
2343                my @dirname = split '/', $name;
2344                my $basename = pop @dirname;
2345                my $fullname = '';
2346
2347                foreach my $dir (@dirname) {
2348                        $fullname .= ($fullname ? '/' : '') . $dir;
2349                        print $cgi->a({-href => href(action=>"tree", file_name=>$fullname,
2350                                                     hash_base=>$hb),
2351                                      -title => $fullname}, esc_path($dir));
2352                        print " / ";
2353                }
2354                if (defined $type && $type eq 'blob') {
2355                        print $cgi->a({-href => href(action=>"blob_plain", file_name=>$file_name,
2356                                                     hash_base=>$hb),
2357                                      -title => $name}, esc_path($basename));
2358                } elsif (defined $type && $type eq 'tree') {
2359                        print $cgi->a({-href => href(action=>"tree", file_name=>$file_name,
2360                                                     hash_base=>$hb),
2361                                      -title => $name}, esc_path($basename));
2362                        print " / ";
2363                } else {
2364                        print esc_path($basename);
2365                }
2366        }
2367        print "<br/></div>\n";
2368}
2369
2370# sub git_print_log (\@;%) {
2371sub git_print_log ($;%) {
2372        my $log = shift;
2373        my %opts = @_;
2374
2375        if ($opts{'-remove_title'}) {
2376                # remove title, i.e. first line of log
2377                shift @$log;
2378        }
2379        # remove leading empty lines
2380        while (defined $log->[0] && $log->[0] eq "") {
2381                shift @$log;
2382        }
2383
2384        # print log
2385        my $signoff = 0;
2386        my $empty = 0;
2387        foreach my $line (@$log) {
2388                if ($line =~ m/^ *(signed[ \-]off[ \-]by[ :]|acked[ \-]by[ :]|cc[ :])/i) {
2389                        $signoff = 1;
2390                        $empty = 0;
2391                        if (! $opts{'-remove_signoff'}) {
2392                                print "<span class=\"signoff\">" . esc_html($line) . "</span><br/>\n";
2393                                next;
2394                        } else {
2395                                # remove signoff lines
2396                                next;
2397                        }
2398                } else {
2399                        $signoff = 0;
2400                }
2401
2402                # print only one empty line
2403                # do not print empty line after signoff
2404                if ($line eq "") {
2405                        next if ($empty || $signoff);
2406                        $empty = 1;
2407                } else {
2408                        $empty = 0;
2409                }
2410
2411                print format_log_line_html($line) . "<br/>\n";
2412        }
2413
2414        if ($opts{'-final_empty_line'}) {
2415                # end with single empty line
2416                print "<br/>\n" unless $empty;
2417        }
2418}
2419
2420# return link target (what link points to)
2421sub git_get_link_target {
2422        my $hash = shift;
2423        my $link_target;
2424
2425        # read link
2426        open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
2427                or return;
2428        {
2429                local $/;
2430                $link_target = <$fd>;
2431        }
2432        close $fd
2433                or return;
2434
2435        return $link_target;
2436}
2437
2438# given link target, and the directory (basedir) the link is in,
2439# return target of link relative to top directory (top tree);
2440# return undef if it is not possible (including absolute links).
2441sub normalize_link_target {
2442        my ($link_target, $basedir, $hash_base) = @_;
2443
2444        # we can normalize symlink target only if $hash_base is provided
2445        return unless $hash_base;
2446
2447        # absolute symlinks (beginning with '/') cannot be normalized
2448        return if (substr($link_target, 0, 1) eq '/');
2449
2450        # normalize link target to path from top (root) tree (dir)
2451        my $path;
2452        if ($basedir) {
2453                $path = $basedir . '/' . $link_target;
2454        } else {
2455                # we are in top (root) tree (dir)
2456                $path = $link_target;
2457        }
2458
2459        # remove //, /./, and /../
2460        my @path_parts;
2461        foreach my $part (split('/', $path)) {
2462                # discard '.' and ''
2463                next if (!$part || $part eq '.');
2464                # handle '..'
2465                if ($part eq '..') {
2466                        if (@path_parts) {
2467                                pop @path_parts;
2468                        } else {
2469                                # link leads outside repository (outside top dir)
2470                                return;
2471                        }
2472                } else {
2473                        push @path_parts, $part;
2474                }
2475        }
2476        $path = join('/', @path_parts);
2477
2478        return $path;
2479}
2480
2481# print tree entry (row of git_tree), but without encompassing <tr> element
2482sub git_print_tree_entry {
2483        my ($t, $basedir, $hash_base, $have_blame) = @_;
2484
2485        my %base_key = ();
2486        $base_key{'hash_base'} = $hash_base if defined $hash_base;
2487
2488        # The format of a table row is: mode list link.  Where mode is
2489        # the mode of the entry, list is the name of the entry, an href,
2490        # and link is the action links of the entry.
2491
2492        print "<td class=\"mode\">" . mode_str($t->{'mode'}) . "</td>\n";
2493        if ($t->{'type'} eq "blob") {
2494                print "<td class=\"list\">" .
2495                        $cgi->a({-href => href(action=>"blob", hash=>$t->{'hash'},
2496                                               file_name=>"$basedir$t->{'name'}", %base_key),
2497                                -class => "list"}, esc_path($t->{'name'}));
2498                if (S_ISLNK(oct $t->{'mode'})) {
2499                        my $link_target = git_get_link_target($t->{'hash'});
2500                        if ($link_target) {
2501                                my $norm_target = normalize_link_target($link_target, $basedir, $hash_base);
2502                                if (defined $norm_target) {
2503                                        print " -> " .
2504                                              $cgi->a({-href => href(action=>"object", hash_base=>$hash_base,
2505                                                                     file_name=>$norm_target),
2506                                                       -title => $norm_target}, esc_path($link_target));
2507                                } else {
2508                                        print " -> " . esc_path($link_target);
2509                                }
2510                        }
2511                }
2512                print "</td>\n";
2513                print "<td class=\"link\">";
2514                print $cgi->a({-href => href(action=>"blob", hash=>$t->{'hash'},
2515                                             file_name=>"$basedir$t->{'name'}", %base_key)},
2516                              "blob");
2517                if ($have_blame) {
2518                        print " | " .
2519                              $cgi->a({-href => href(action=>"blame", hash=>$t->{'hash'},
2520                                                     file_name=>"$basedir$t->{'name'}", %base_key)},
2521                                      "blame");
2522                }
2523                if (defined $hash_base) {
2524                        print " | " .
2525                              $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
2526                                                     hash=>$t->{'hash'}, file_name=>"$basedir$t->{'name'}")},
2527                                      "history");
2528                }
2529                print " | " .
2530                        $cgi->a({-href => href(action=>"blob_plain", hash_base=>$hash_base,
2531                                               file_name=>"$basedir$t->{'name'}")},
2532                                "raw");
2533                print "</td>\n";
2534
2535        } elsif ($t->{'type'} eq "tree") {
2536                print "<td class=\"list\">";
2537                print $cgi->a({-href => href(action=>"tree", hash=>$t->{'hash'},
2538                                             file_name=>"$basedir$t->{'name'}", %base_key)},
2539                              esc_path($t->{'name'}));
2540                print "</td>\n";
2541                print "<td class=\"link\">";
2542                print $cgi->a({-href => href(action=>"tree", hash=>$t->{'hash'},
2543                                             file_name=>"$basedir$t->{'name'}", %base_key)},
2544                              "tree");
2545                if (defined $hash_base) {
2546                        print " | " .
2547                              $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
2548                                                     file_name=>"$basedir$t->{'name'}")},
2549                                      "history");
2550                }
2551                print "</td>\n";
2552        }
2553}
2554
2555## ......................................................................
2556## functions printing large fragments of HTML
2557
2558sub fill_from_file_info {
2559        my ($diff, @parents) = @_;
2560
2561        $diff->{'from_file'} = [ ];
2562        $diff->{'from_file'}[$diff->{'nparents'} - 1] = undef;
2563        for (my $i = 0; $i < $diff->{'nparents'}; $i++) {
2564                if ($diff->{'status'}[$i] eq 'R' ||
2565                    $diff->{'status'}[$i] eq 'C') {
2566                        $diff->{'from_file'}[$i] =
2567                                git_get_path_by_hash($parents[$i], $diff->{'from_id'}[$i]);
2568                }
2569        }
2570
2571        return $diff;
2572}
2573
2574# parameters can be strings, or references to arrays of strings
2575sub from_ids_eq {
2576        my ($a, $b) = @_;
2577
2578        if (ref($a) eq "ARRAY" && ref($b) eq "ARRAY" && @$a == @$b) {
2579                for (my $i = 0; $i < @$a; ++$i) {
2580                        return 0 unless ($a->[$i] eq $b->[$i]);
2581                }
2582                return 1;
2583        } elsif (!ref($a) && !ref($b)) {
2584                return $a eq $b;
2585        } else {
2586                return 0;
2587        }
2588}
2589
2590sub is_deleted {
2591        my $diffinfo = shift;
2592
2593        return $diffinfo->{'to_id'} eq ('0' x 40);
2594}
2595
2596sub git_difftree_body {
2597        my ($difftree, $hash, @parents) = @_;
2598        my ($parent) = $parents[0];
2599        my ($have_blame) = gitweb_check_feature('blame');
2600        print "<div class=\"list_head\">\n";
2601        if ($#{$difftree} > 10) {
2602                print(($#{$difftree} + 1) . " files changed:\n");
2603        }
2604        print "</div>\n";
2605
2606        print "<table class=\"" .
2607              (@parents > 1 ? "combined " : "") .
2608              "diff_tree\">\n";
2609
2610        # header only for combined diff in 'commitdiff' view
2611        my $has_header = @parents > 1 && $action eq 'commitdiff';
2612        if ($has_header) {
2613                # table header
2614                print "<thead><tr>\n" .
2615                       "<th></th><th></th>\n"; # filename, patchN link
2616                for (my $i = 0; $i < @parents; $i++) {
2617                        my $par = $parents[$i];
2618                        print "<th>" .
2619                              $cgi->a({-href => href(action=>"commitdiff",
2620                                                     hash=>$hash, hash_parent=>$par),
2621                                       -title => 'commitdiff to parent number ' .
2622                                                  ($i+1) . ': ' . substr($par,0,7)},
2623                                      $i+1) .
2624                              "&nbsp;</th>\n";
2625                }
2626                print "</tr></thead>\n<tbody>\n";
2627        }
2628
2629        my $alternate = 1;
2630        my $patchno = 0;
2631        foreach my $line (@{$difftree}) {
2632                my $diff;
2633                if (ref($line) eq "HASH") {
2634                        # pre-parsed (or generated by hand)
2635                        $diff = $line;
2636                } else {
2637                        $diff = parse_difftree_raw_line($line);
2638                }
2639
2640                if ($alternate) {
2641                        print "<tr class=\"dark\">\n";
2642                } else {
2643                        print "<tr class=\"light\">\n";
2644                }
2645                $alternate ^= 1;
2646
2647                if (exists $diff->{'nparents'}) { # combined diff
2648
2649                        fill_from_file_info($diff, @parents)
2650                                unless exists $diff->{'from_file'};
2651
2652                        if (!is_deleted($diff)) {
2653                                # file exists in the result (child) commit
2654                                print "<td>" .
2655                                      $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
2656                                                             file_name=>$diff->{'to_file'},
2657                                                             hash_base=>$hash),
2658                                              -class => "list"}, esc_path($diff->{'to_file'})) .
2659                                      "</td>\n";
2660                        } else {
2661                                print "<td>" .
2662                                      esc_path($diff->{'to_file'}) .
2663                                      "</td>\n";
2664                        }
2665
2666                        if ($action eq 'commitdiff') {
2667                                # link to patch
2668                                $patchno++;
2669                                print "<td class=\"link\">" .
2670                                      $cgi->a({-href => "#patch$patchno"}, "patch") .
2671                                      " | " .
2672                                      "</td>\n";
2673                        }
2674
2675                        my $has_history = 0;
2676                        my $not_deleted = 0;
2677                        for (my $i = 0; $i < $diff->{'nparents'}; $i++) {
2678                                my $hash_parent = $parents[$i];
2679                                my $from_hash = $diff->{'from_id'}[$i];
2680                                my $from_path = $diff->{'from_file'}[$i];
2681                                my $status = $diff->{'status'}[$i];
2682
2683                                $has_history ||= ($status ne 'A');
2684                                $not_deleted ||= ($status ne 'D');
2685
2686                                if ($status eq 'A') {
2687                                        print "<td  class=\"link\" align=\"right\"> | </td>\n";
2688                                } elsif ($status eq 'D') {
2689                                        print "<td class=\"link\">" .
2690                                              $cgi->a({-href => href(action=>"blob",
2691                                                                     hash_base=>$hash,
2692                                                                     hash=>$from_hash,
2693                                                                     file_name=>$from_path)},
2694                                                      "blob" . ($i+1)) .
2695                                              " | </td>\n";
2696                                } else {
2697                                        if ($diff->{'to_id'} eq $from_hash) {
2698                                                print "<td class=\"link nochange\">";
2699                                        } else {
2700                                                print "<td class=\"link\">";
2701                                        }
2702                                        print $cgi->a({-href => href(action=>"blobdiff",
2703                                                                     hash=>$diff->{'to_id'},
2704                                                                     hash_parent=>$from_hash,
2705                                                                     hash_base=>$hash,
2706                                                                     hash_parent_base=>$hash_parent,
2707                                                                     file_name=>$diff->{'to_file'},
2708                                                                     file_parent=>$from_path)},
2709                                                      "diff" . ($i+1)) .
2710                                              " | </td>\n";
2711                                }
2712                        }
2713
2714                        print "<td class=\"link\">";
2715                        if ($not_deleted) {
2716                                print $cgi->a({-href => href(action=>"blob",
2717                                                             hash=>$diff->{'to_id'},
2718                                                             file_name=>$diff->{'to_file'},
2719                                                             hash_base=>$hash)},
2720                                              "blob");
2721                                print " | " if ($has_history);
2722                        }
2723                        if ($has_history) {
2724                                print $cgi->a({-href => href(action=>"history",
2725                                                             file_name=>$diff->{'to_file'},
2726                                                             hash_base=>$hash)},
2727                                              "history");
2728                        }
2729                        print "</td>\n";
2730
2731                        print "</tr>\n";
2732                        next; # instead of 'else' clause, to avoid extra indent
2733                }
2734                # else ordinary diff
2735
2736                my ($to_mode_oct, $to_mode_str, $to_file_type);
2737                my ($from_mode_oct, $from_mode_str, $from_file_type);
2738                if ($diff->{'to_mode'} ne ('0' x 6)) {
2739                        $to_mode_oct = oct $diff->{'to_mode'};
2740                        if (S_ISREG($to_mode_oct)) { # only for regular file
2741                                $to_mode_str = sprintf("%04o", $to_mode_oct & 0777); # permission bits
2742                        }
2743                        $to_file_type = file_type($diff->{'to_mode'});
2744                }
2745                if ($diff->{'from_mode'} ne ('0' x 6)) {
2746                        $from_mode_oct = oct $diff->{'from_mode'};
2747                        if (S_ISREG($to_mode_oct)) { # only for regular file
2748                                $from_mode_str = sprintf("%04o", $from_mode_oct & 0777); # permission bits
2749                        }
2750                        $from_file_type = file_type($diff->{'from_mode'});
2751                }
2752
2753                if ($diff->{'status'} eq "A") { # created
2754                        my $mode_chng = "<span class=\"file_status new\">[new $to_file_type";
2755                        $mode_chng   .= " with mode: $to_mode_str" if $to_mode_str;
2756                        $mode_chng   .= "]</span>";
2757                        print "<td>";
2758                        print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
2759                                                     hash_base=>$hash, file_name=>$diff->{'file'}),
2760                                      -class => "list"}, esc_path($diff->{'file'}));
2761                        print "</td>\n";
2762                        print "<td>$mode_chng</td>\n";
2763                        print "<td class=\"link\">";
2764                        if ($action eq 'commitdiff') {
2765                                # link to patch
2766                                $patchno++;
2767                                print $cgi->a({-href => "#patch$patchno"}, "patch");
2768                                print " | ";
2769                        }
2770                        print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
2771                                                     hash_base=>$hash, file_name=>$diff->{'file'})},
2772                                      "blob");
2773                        print "</td>\n";
2774
2775                } elsif ($diff->{'status'} eq "D") { # deleted
2776                        my $mode_chng = "<span class=\"file_status deleted\">[deleted $from_file_type]</span>";
2777                        print "<td>";
2778                        print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'from_id'},
2779                                                     hash_base=>$parent, file_name=>$diff->{'file'}),
2780                                       -class => "list"}, esc_path($diff->{'file'}));
2781                        print "</td>\n";
2782                        print "<td>$mode_chng</td>\n";
2783                        print "<td class=\"link\">";
2784                        if ($action eq 'commitdiff') {
2785                                # link to patch
2786                                $patchno++;
2787                                print $cgi->a({-href => "#patch$patchno"}, "patch");
2788                                print " | ";
2789                        }
2790                        print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'from_id'},
2791                                                     hash_base=>$parent, file_name=>$diff->{'file'})},
2792                                      "blob") . " | ";
2793                        if ($have_blame) {
2794                                print $cgi->a({-href => href(action=>"blame", hash_base=>$parent,
2795                                                             file_name=>$diff->{'file'})},
2796                                              "blame") . " | ";
2797                        }
2798                        print $cgi->a({-href => href(action=>"history", hash_base=>$parent,
2799                                                     file_name=>$diff->{'file'})},
2800                                      "history");
2801                        print "</td>\n";
2802
2803                } elsif ($diff->{'status'} eq "M" || $diff->{'status'} eq "T") { # modified, or type changed
2804                        my $mode_chnge = "";
2805                        if ($diff->{'from_mode'} != $diff->{'to_mode'}) {
2806                                $mode_chnge = "<span class=\"file_status mode_chnge\">[changed";
2807                                if ($from_file_type ne $to_file_type) {
2808                                        $mode_chnge .= " from $from_file_type to $to_file_type";
2809                                }
2810                                if (($from_mode_oct & 0777) != ($to_mode_oct & 0777)) {
2811                                        if ($from_mode_str && $to_mode_str) {
2812                                                $mode_chnge .= " mode: $from_mode_str->$to_mode_str";
2813                                        } elsif ($to_mode_str) {
2814                                                $mode_chnge .= " mode: $to_mode_str";
2815                                        }
2816                                }
2817                                $mode_chnge .= "]</span>\n";
2818                        }
2819                        print "<td>";
2820                        print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
2821                                                     hash_base=>$hash, file_name=>$diff->{'file'}),
2822                                      -class => "list"}, esc_path($diff->{'file'}));
2823                        print "</td>\n";
2824                        print "<td>$mode_chnge</td>\n";
2825                        print "<td class=\"link\">";
2826                        if ($action eq 'commitdiff') {
2827                                # link to patch
2828                                $patchno++;
2829                                print $cgi->a({-href => "#patch$patchno"}, "patch") .
2830                                      " | ";
2831                        } elsif ($diff->{'to_id'} ne $diff->{'from_id'}) {
2832                                # "commit" view and modified file (not onlu mode changed)
2833                                print $cgi->a({-href => href(action=>"blobdiff",
2834                                                             hash=>$diff->{'to_id'}, hash_parent=>$diff->{'from_id'},
2835                                                             hash_base=>$hash, hash_parent_base=>$parent,
2836                                                             file_name=>$diff->{'file'})},
2837                                              "diff") .
2838                                      " | ";
2839                        }
2840                        print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
2841                                                     hash_base=>$hash, file_name=>$diff->{'file'})},
2842                                       "blob") . " | ";
2843                        if ($have_blame) {
2844                                print $cgi->a({-href => href(action=>"blame", hash_base=>$hash,
2845                                                             file_name=>$diff->{'file'})},
2846                                              "blame") . " | ";
2847                        }
2848                        print $cgi->a({-href => href(action=>"history", hash_base=>$hash,
2849                                                     file_name=>$diff->{'file'})},
2850                                      "history");
2851                        print "</td>\n";
2852
2853                } elsif ($diff->{'status'} eq "R" || $diff->{'status'} eq "C") { # renamed or copied
2854                        my %status_name = ('R' => 'moved', 'C' => 'copied');
2855                        my $nstatus = $status_name{$diff->{'status'}};
2856                        my $mode_chng = "";
2857                        if ($diff->{'from_mode'} != $diff->{'to_mode'}) {
2858                                # mode also for directories, so we cannot use $to_mode_str
2859                                $mode_chng = sprintf(", mode: %04o", $to_mode_oct & 0777);
2860                        }
2861                        print "<td>" .
2862                              $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
2863                                                     hash=>$diff->{'to_id'}, file_name=>$diff->{'to_file'}),
2864                                      -class => "list"}, esc_path($diff->{'to_file'})) . "</td>\n" .
2865                              "<td><span class=\"file_status $nstatus\">[$nstatus from " .
2866                              $cgi->a({-href => href(action=>"blob", hash_base=>$parent,
2867                                                     hash=>$diff->{'from_id'}, file_name=>$diff->{'from_file'}),
2868                                      -class => "list"}, esc_path($diff->{'from_file'})) .
2869                              " with " . (int $diff->{'similarity'}) . "% similarity$mode_chng]</span></td>\n" .
2870                              "<td class=\"link\">";
2871                        if ($action eq 'commitdiff') {
2872                                # link to patch
2873                                $patchno++;
2874                                print $cgi->a({-href => "#patch$patchno"}, "patch") .
2875                                      " | ";
2876                        } elsif ($diff->{'to_id'} ne $diff->{'from_id'}) {
2877                                # "commit" view and modified file (not only pure rename or copy)
2878                                print $cgi->a({-href => href(action=>"blobdiff",
2879                                                             hash=>$diff->{'to_id'}, hash_parent=>$diff->{'from_id'},
2880                                                             hash_base=>$hash, hash_parent_base=>$parent,
2881                                                             file_name=>$diff->{'to_file'}, file_parent=>$diff->{'from_file'})},
2882                                              "diff") .
2883                                      " | ";
2884                        }
2885                        print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
2886                                                     hash_base=>$parent, file_name=>$diff->{'to_file'})},
2887                                      "blob") . " | ";
2888                        if ($have_blame) {
2889                                print $cgi->a({-href => href(action=>"blame", hash_base=>$hash,
2890                                                             file_name=>$diff->{'to_file'})},
2891                                              "blame") . " | ";
2892                        }
2893                        print $cgi->a({-href => href(action=>"history", hash_base=>$hash,
2894                                                    file_name=>$diff->{'to_file'})},
2895                                      "history");
2896                        print "</td>\n";
2897
2898                } # we should not encounter Unmerged (U) or Unknown (X) status
2899                print "</tr>\n";
2900        }
2901        print "</tbody>" if $has_header;
2902        print "</table>\n";
2903}
2904
2905sub git_patchset_body {
2906        my ($fd, $difftree, $hash, @hash_parents) = @_;
2907        my ($hash_parent) = $hash_parents[0];
2908
2909        my $patch_idx = 0;
2910        my $patch_number = 0;
2911        my $patch_line;
2912        my $diffinfo;
2913        my (%from, %to);
2914
2915        print "<div class=\"patchset\">\n";
2916
2917        # skip to first patch
2918        while ($patch_line = <$fd>) {
2919                chomp $patch_line;
2920
2921                last if ($patch_line =~ m/^diff /);
2922        }
2923
2924 PATCH:
2925        while ($patch_line) {
2926                my @diff_header;
2927                my ($from_id, $to_id);
2928
2929                # git diff header
2930                #assert($patch_line =~ m/^diff /) if DEBUG;
2931                #assert($patch_line !~ m!$/$!) if DEBUG; # is chomp-ed
2932                $patch_number++;
2933                push @diff_header, $patch_line;
2934
2935                # extended diff header
2936        EXTENDED_HEADER:
2937                while ($patch_line = <$fd>) {
2938                        chomp $patch_line;
2939
2940                        last EXTENDED_HEADER if ($patch_line =~ m/^--- |^diff /);
2941
2942                        if ($patch_line =~ m/^index ([0-9a-fA-F]{40})..([0-9a-fA-F]{40})/) {
2943                                $from_id = $1;
2944                                $to_id   = $2;
2945                        } elsif ($patch_line =~ m/^index ((?:[0-9a-fA-F]{40},)+[0-9a-fA-F]{40})..([0-9a-fA-F]{40})/) {
2946                                $from_id = [ split(',', $1) ];
2947                                $to_id   = $2;
2948                        }
2949
2950                        push @diff_header, $patch_line;
2951                }
2952                my $last_patch_line = $patch_line;
2953
2954                # check if current patch belong to current raw line
2955                # and parse raw git-diff line if needed
2956                if (defined $diffinfo &&
2957                    defined $from_id && defined $to_id &&
2958                    from_ids_eq($diffinfo->{'from_id'}, $from_id) &&
2959                    $diffinfo->{'to_id'} eq $to_id) {
2960                        # this is continuation of a split patch
2961                        print "<div class=\"patch cont\">\n";
2962                } else {
2963                        # advance raw git-diff output if needed
2964                        $patch_idx++ if defined $diffinfo;
2965
2966                        # read and prepare patch information
2967                        if (ref($difftree->[$patch_idx]) eq "HASH") {
2968                                # pre-parsed (or generated by hand)
2969                                $diffinfo = $difftree->[$patch_idx];
2970                        } else {
2971                                $diffinfo = parse_difftree_raw_line($difftree->[$patch_idx]);
2972                        }
2973                        # modifies %from, %to hashes
2974                        parse_from_to_diffinfo($diffinfo, \%from, \%to, @hash_parents);
2975                        if ($diffinfo->{'nparents'}) {
2976                                # combined diff
2977                                $from{'file'} = [];
2978                                $from{'href'} = [];
2979                                fill_from_file_info($diffinfo, @hash_parents)
2980                                        unless exists $diffinfo->{'from_file'};
2981                                for (my $i = 0; $i < $diffinfo->{'nparents'}; $i++) {
2982                                        $from{'file'}[$i] = $diffinfo->{'from_file'}[$i] || $diffinfo->{'to_file'};
2983                                        if ($diffinfo->{'status'}[$i] ne "A") { # not new (added) file
2984                                                $from{'href'}[$i] = href(action=>"blob",
2985                                                                         hash_base=>$hash_parents[$i],
2986                                                                         hash=>$diffinfo->{'from_id'}[$i],
2987                                                                         file_name=>$from{'file'}[$i]);
2988                                        } else {
2989                                                $from{'href'}[$i] = undef;
2990                                        }
2991                                }
2992                        } else {
2993                                $from{'file'} = $diffinfo->{'from_file'} || $diffinfo->{'file'};
2994                                if ($diffinfo->{'status'} ne "A") { # not new (added) file
2995                                        $from{'href'} = href(action=>"blob", hash_base=>$hash_parent,
2996                                                             hash=>$diffinfo->{'from_id'},
2997                                                             file_name=>$from{'file'});
2998                                } else {
2999                                        delete $from{'href'};
3000                                }
3001                        }
3002
3003                        $to{'file'} = $diffinfo->{'to_file'} || $diffinfo->{'file'};
3004                        if (!is_deleted($diffinfo)) { # file exists in result
3005                                $to{'href'} = href(action=>"blob", hash_base=>$hash,
3006                                                   hash=>$diffinfo->{'to_id'},
3007                                                   file_name=>$to{'file'});
3008                        } else {
3009                                delete $to{'href'};
3010                        }
3011                        # this is first patch for raw difftree line with $patch_idx index
3012                        # we index @$difftree array from 0, but number patches from 1
3013                        print "<div class=\"patch\" id=\"patch". ($patch_idx+1) ."\">\n";
3014                }
3015
3016                # print "git diff" header
3017                $patch_line = shift @diff_header;
3018                print format_git_diff_header_line($patch_line, $diffinfo,
3019                                                  \%from, \%to);
3020
3021                # print extended diff header
3022                print "<div class=\"diff extended_header\">\n" if (@diff_header > 0);
3023        EXTENDED_HEADER:
3024                foreach $patch_line (@diff_header) {
3025                        print format_extended_diff_header_line($patch_line, $diffinfo,
3026                                                               \%from, \%to);
3027                }
3028                print "</div>\n"  if (@diff_header > 0); # class="diff extended_header"
3029
3030                # from-file/to-file diff header
3031                $patch_line = $last_patch_line;
3032                if (! $patch_line) {
3033                        print "</div>\n"; # class="patch"
3034                        last PATCH;
3035                }
3036                next PATCH if ($patch_line =~ m/^diff /);
3037                #assert($patch_line =~ m/^---/) if DEBUG;
3038                #assert($patch_line eq $last_patch_line) if DEBUG;
3039
3040                $patch_line = <$fd>;
3041                chomp $patch_line;
3042                #assert($patch_line =~ m/^\+\+\+/) if DEBUG;
3043
3044                print format_diff_from_to_header($last_patch_line, $patch_line,
3045                                                 $diffinfo, \%from, \%to);
3046
3047                # the patch itself
3048        LINE:
3049                while ($patch_line = <$fd>) {
3050                        chomp $patch_line;
3051
3052                        next PATCH if ($patch_line =~ m/^diff /);
3053
3054                        print format_diff_line($patch_line, \%from, \%to);
3055                }
3056
3057        } continue {
3058                print "</div>\n"; # class="patch"
3059        }
3060
3061        if ($patch_number == 0) {
3062                if (@hash_parents > 1) {
3063                        print "<div class=\"diff nodifferences\">Trivial merge</div>\n";
3064                } else {
3065                        print "<div class=\"diff nodifferences\">No differences found</div>\n";
3066                }
3067        }
3068
3069        print "</div>\n"; # class="patchset"
3070}
3071
3072# . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3073
3074sub git_project_list_body {
3075        my ($projlist, $order, $from, $to, $extra, $no_header) = @_;
3076
3077        my ($check_forks) = gitweb_check_feature('forks');
3078
3079        my @projects;
3080        foreach my $pr (@$projlist) {
3081                my (@aa) = git_get_last_activity($pr->{'path'});
3082                unless (@aa) {
3083                        next;
3084                }
3085                ($pr->{'age'}, $pr->{'age_string'}) = @aa;
3086                if (!defined $pr->{'descr'}) {
3087                        my $descr = git_get_project_description($pr->{'path'}) || "";
3088                        $pr->{'descr_long'} = to_utf8($descr);
3089                        $pr->{'descr'} = chop_str($descr, 25, 5);
3090                }
3091                if (!defined $pr->{'owner'}) {
3092                        $pr->{'owner'} = get_file_owner("$projectroot/$pr->{'path'}") || "";
3093                }
3094                if ($check_forks) {
3095                        my $pname = $pr->{'path'};
3096                        if (($pname =~ s/\.git$//) &&
3097                            ($pname !~ /\/$/) &&
3098                            (-d "$projectroot/$pname")) {
3099                                $pr->{'forks'} = "-d $projectroot/$pname";
3100                        }
3101                        else {
3102                                $pr->{'forks'} = 0;
3103                        }
3104                }
3105                push @projects, $pr;
3106        }
3107
3108        $order ||= $default_projects_order;
3109        $from = 0 unless defined $from;
3110        $to = $#projects if (!defined $to || $#projects < $to);
3111
3112        print "<table class=\"project_list\">\n";
3113        unless ($no_header) {
3114                print "<tr>\n";
3115                if ($check_forks) {
3116                        print "<th></th>\n";
3117                }
3118                if ($order eq "project") {
3119                        @projects = sort {$a->{'path'} cmp $b->{'path'}} @projects;
3120                        print "<th>Project</th>\n";
3121                } else {
3122                        print "<th>" .
3123                              $cgi->a({-href => href(project=>undef, order=>'project'),
3124                                       -class => "header"}, "Project") .
3125                              "</th>\n";
3126                }
3127                if ($order eq "descr") {
3128                        @projects = sort {$a->{'descr'} cmp $b->{'descr'}} @projects;
3129                        print "<th>Description</th>\n";
3130                } else {
3131                        print "<th>" .
3132                              $cgi->a({-href => href(project=>undef, order=>'descr'),
3133                                       -class => "header"}, "Description") .
3134                              "</th>\n";
3135                }
3136                if ($order eq "owner") {
3137                        @projects = sort {$a->{'owner'} cmp $b->{'owner'}} @projects;
3138                        print "<th>Owner</th>\n";
3139                } else {
3140                        print "<th>" .
3141                              $cgi->a({-href => href(project=>undef, order=>'owner'),
3142                                       -class => "header"}, "Owner") .
3143                              "</th>\n";
3144                }
3145                if ($order eq "age") {
3146                        @projects = sort {$a->{'age'} <=> $b->{'age'}} @projects;
3147                        print "<th>Last Change</th>\n";
3148                } else {
3149                        print "<th>" .
3150                              $cgi->a({-href => href(project=>undef, order=>'age'),
3151                                       -class => "header"}, "Last Change") .
3152                              "</th>\n";
3153                }
3154                print "<th></th>\n" .
3155                      "</tr>\n";
3156        }
3157        my $alternate = 1;
3158        for (my $i = $from; $i <= $to; $i++) {
3159                my $pr = $projects[$i];
3160                if ($alternate) {
3161                        print "<tr class=\"dark\">\n";
3162                } else {
3163                        print "<tr class=\"light\">\n";
3164                }
3165                $alternate ^= 1;
3166                if ($check_forks) {
3167                        print "<td>";
3168                        if ($pr->{'forks'}) {
3169                                print "<!-- $pr->{'forks'} -->\n";
3170                                print $cgi->a({-href => href(project=>$pr->{'path'}, action=>"forks")}, "+");
3171                        }
3172                        print "</td>\n";
3173                }
3174                print "<td>" . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary"),
3175                                        -class => "list"}, esc_html($pr->{'path'})) . "</td>\n" .
3176                      "<td>" . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary"),
3177                                        -class => "list", -title => $pr->{'descr_long'}},
3178                                        esc_html($pr->{'descr'})) . "</td>\n" .
3179                      "<td><i>" . chop_str($pr->{'owner'}, 15) . "</i></td>\n";
3180                print "<td class=\"". age_class($pr->{'age'}) . "\">" .
3181                      (defined $pr->{'age_string'} ? $pr->{'age_string'} : "No commits") . "</td>\n" .
3182                      "<td class=\"link\">" .
3183                      $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary")}, "summary")   . " | " .
3184                      $cgi->a({-href => href(project=>$pr->{'path'}, action=>"shortlog")}, "shortlog") . " | " .
3185                      $cgi->a({-href => href(project=>$pr->{'path'}, action=>"log")}, "log") . " | " .
3186                      $cgi->a({-href => href(project=>$pr->{'path'}, action=>"tree")}, "tree") .
3187                      ($pr->{'forks'} ? " | " . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"forks")}, "forks") : '') .
3188                      "</td>\n" .
3189                      "</tr>\n";
3190        }
3191        if (defined $extra) {
3192                print "<tr>\n";
3193                if ($check_forks) {
3194                        print "<td></td>\n";
3195                }
3196                print "<td colspan=\"5\">$extra</td>\n" .
3197                      "</tr>\n";
3198        }
3199        print "</table>\n";
3200}
3201
3202sub git_shortlog_body {
3203        # uses global variable $project
3204        my ($commitlist, $from, $to, $refs, $extra) = @_;
3205
3206        my $have_snapshot = gitweb_have_snapshot();
3207
3208        $from = 0 unless defined $from;
3209        $to = $#{$commitlist} if (!defined $to || $#{$commitlist} < $to);
3210
3211        print "<table class=\"shortlog\" cellspacing=\"0\">\n";
3212        my $alternate = 1;
3213        for (my $i = $from; $i <= $to; $i++) {
3214                my %co = %{$commitlist->[$i]};
3215                my $commit = $co{'id'};
3216                my $ref = format_ref_marker($refs, $commit);
3217                if ($alternate) {
3218                        print "<tr class=\"dark\">\n";
3219                } else {
3220                        print "<tr class=\"light\">\n";
3221                }
3222                $alternate ^= 1;
3223                # git_summary() used print "<td><i>$co{'age_string'}</i></td>\n" .
3224                print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
3225                      "<td><i>" . esc_html(chop_str($co{'author_name'}, 10)) . "</i></td>\n" .
3226                      "<td>";
3227                print format_subject_html($co{'title'}, $co{'title_short'},
3228                                          href(action=>"commit", hash=>$commit), $ref);
3229                print "</td>\n" .
3230                      "<td class=\"link\">" .
3231                      $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") . " | " .
3232                      $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") . " | " .
3233                      $cgi->a({-href => href(action=>"tree", hash=>$commit, hash_base=>$commit)}, "tree");
3234                if ($have_snapshot) {
3235                        print " | " . $cgi->a({-href => href(action=>"snapshot", hash=>$commit)}, "snapshot");
3236                }
3237                print "</td>\n" .
3238                      "</tr>\n";
3239        }
3240        if (defined $extra) {
3241                print "<tr>\n" .
3242                      "<td colspan=\"4\">$extra</td>\n" .
3243                      "</tr>\n";
3244        }
3245        print "</table>\n";
3246}
3247
3248sub git_history_body {
3249        # Warning: assumes constant type (blob or tree) during history
3250        my ($commitlist, $from, $to, $refs, $hash_base, $ftype, $extra) = @_;
3251
3252        $from = 0 unless defined $from;
3253        $to = $#{$commitlist} unless (defined $to && $to <= $#{$commitlist});
3254
3255        print "<table class=\"history\" cellspacing=\"0\">\n";
3256        my $alternate = 1;
3257        for (my $i = $from; $i <= $to; $i++) {
3258                my %co = %{$commitlist->[$i]};
3259                if (!%co) {
3260                        next;
3261                }
3262                my $commit = $co{'id'};
3263
3264                my $ref = format_ref_marker($refs, $commit);
3265
3266                if ($alternate) {
3267                        print "<tr class=\"dark\">\n";
3268                } else {
3269                        print "<tr class=\"light\">\n";
3270                }
3271                $alternate ^= 1;
3272                print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
3273                      # shortlog uses      chop_str($co{'author_name'}, 10)
3274                      "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 3)) . "</i></td>\n" .
3275                      "<td>";
3276                # originally git_history used chop_str($co{'title'}, 50)
3277                print format_subject_html($co{'title'}, $co{'title_short'},
3278                                          href(action=>"commit", hash=>$commit), $ref);
3279                print "</td>\n" .
3280                      "<td class=\"link\">" .
3281                      $cgi->a({-href => href(action=>$ftype, hash_base=>$commit, file_name=>$file_name)}, $ftype) . " | " .
3282                      $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff");
3283
3284                if ($ftype eq 'blob') {
3285                        my $blob_current = git_get_hash_by_path($hash_base, $file_name);
3286                        my $blob_parent  = git_get_hash_by_path($commit, $file_name);
3287                        if (defined $blob_current && defined $blob_parent &&
3288                                        $blob_current ne $blob_parent) {
3289                                print " | " .
3290                                        $cgi->a({-href => href(action=>"blobdiff",
3291                                                               hash=>$blob_current, hash_parent=>$blob_parent,
3292                                                               hash_base=>$hash_base, hash_parent_base=>$commit,
3293                                                               file_name=>$file_name)},
3294                                                "diff to current");
3295                        }
3296                }
3297                print "</td>\n" .
3298                      "</tr>\n";
3299        }
3300        if (defined $extra) {
3301                print "<tr>\n" .
3302                      "<td colspan=\"4\">$extra</td>\n" .
3303                      "</tr>\n";
3304        }
3305        print "</table>\n";
3306}
3307
3308sub git_tags_body {
3309        # uses global variable $project
3310        my ($taglist, $from, $to, $extra) = @_;
3311        $from = 0 unless defined $from;
3312        $to = $#{$taglist} if (!defined $to || $#{$taglist} < $to);
3313
3314        print "<table class=\"tags\" cellspacing=\"0\">\n";
3315        my $alternate = 1;
3316        for (my $i = $from; $i <= $to; $i++) {
3317                my $entry = $taglist->[$i];
3318                my %tag = %$entry;
3319                my $comment = $tag{'subject'};
3320                my $comment_short;
3321                if (defined $comment) {
3322                        $comment_short = chop_str($comment, 30, 5);
3323                }
3324                if ($alternate) {
3325                        print "<tr class=\"dark\">\n";
3326                } else {
3327                        print "<tr class=\"light\">\n";
3328                }
3329                $alternate ^= 1;
3330                if (defined $tag{'age'}) {
3331                        print "<td><i>$tag{'age'}</i></td>\n";
3332                } else {
3333                        print "<td></td>\n";
3334                }
3335                print "<td>" .
3336                      $cgi->a({-href => href(action=>$tag{'reftype'}, hash=>$tag{'refid'}),
3337                               -class => "list name"}, esc_html($tag{'name'})) .
3338                      "</td>\n" .
3339                      "<td>";
3340                if (defined $comment) {
3341                        print format_subject_html($comment, $comment_short,
3342                                                  href(action=>"tag", hash=>$tag{'id'}));
3343                }
3344                print "</td>\n" .
3345                      "<td class=\"selflink\">";
3346                if ($tag{'type'} eq "tag") {
3347                        print $cgi->a({-href => href(action=>"tag", hash=>$tag{'id'})}, "tag");
3348                } else {
3349                        print "&nbsp;";
3350                }
3351                print "</td>\n" .
3352                      "<td class=\"link\">" . " | " .
3353                      $cgi->a({-href => href(action=>$tag{'reftype'}, hash=>$tag{'refid'})}, $tag{'reftype'});
3354                if ($tag{'reftype'} eq "commit") {
3355                        print " | " . $cgi->a({-href => href(action=>"shortlog", hash=>$tag{'name'})}, "shortlog") .
3356                              " | " . $cgi->a({-href => href(action=>"log", hash=>$tag{'name'})}, "log");
3357                } elsif ($tag{'reftype'} eq "blob") {
3358                        print " | " . $cgi->a({-href => href(action=>"blob_plain", hash=>$tag{'refid'})}, "raw");
3359                }
3360                print "</td>\n" .
3361                      "</tr>";
3362        }
3363        if (defined $extra) {
3364                print "<tr>\n" .
3365                      "<td colspan=\"5\">$extra</td>\n" .
3366                      "</tr>\n";
3367        }
3368        print "</table>\n";
3369}
3370
3371sub git_heads_body {
3372        # uses global variable $project
3373        my ($headlist, $head, $from, $to, $extra) = @_;
3374        $from = 0 unless defined $from;
3375        $to = $#{$headlist} if (!defined $to || $#{$headlist} < $to);
3376
3377        print "<table class=\"heads\" cellspacing=\"0\">\n";
3378        my $alternate = 1;
3379        for (my $i = $from; $i <= $to; $i++) {
3380                my $entry = $headlist->[$i];
3381                my %ref = %$entry;
3382                my $curr = $ref{'id'} eq $head;
3383                if ($alternate) {
3384                        print "<tr class=\"dark\">\n";
3385                } else {
3386                        print "<tr class=\"light\">\n";
3387                }
3388                $alternate ^= 1;
3389                print "<td><i>$ref{'age'}</i></td>\n" .
3390                      ($curr ? "<td class=\"current_head\">" : "<td>") .
3391                      $cgi->a({-href => href(action=>"shortlog", hash=>$ref{'name'}),
3392                               -class => "list name"},esc_html($ref{'name'})) .
3393                      "</td>\n" .
3394                      "<td class=\"link\">" .
3395                      $cgi->a({-href => href(action=>"shortlog", hash=>$ref{'name'})}, "shortlog") . " | " .
3396                      $cgi->a({-href => href(action=>"log", hash=>$ref{'name'})}, "log") . " | " .
3397                      $cgi->a({-href => href(action=>"tree", hash=>$ref{'name'}, hash_base=>$ref{'name'})}, "tree") .
3398                      "</td>\n" .
3399                      "</tr>";
3400        }
3401        if (defined $extra) {
3402                print "<tr>\n" .
3403                      "<td colspan=\"3\">$extra</td>\n" .
3404                      "</tr>\n";
3405        }
3406        print "</table>\n";
3407}
3408
3409sub git_search_grep_body {
3410        my ($commitlist, $from, $to, $extra) = @_;
3411        $from = 0 unless defined $from;
3412        $to = $#{$commitlist} if (!defined $to || $#{$commitlist} < $to);
3413
3414        print "<table class=\"grep\" cellspacing=\"0\">\n";
3415        my $alternate = 1;
3416        for (my $i = $from; $i <= $to; $i++) {
3417                my %co = %{$commitlist->[$i]};
3418                if (!%co) {
3419                        next;
3420                }
3421                my $commit = $co{'id'};
3422                if ($alternate) {
3423                        print "<tr class=\"dark\">\n";
3424                } else {
3425                        print "<tr class=\"light\">\n";
3426                }
3427                $alternate ^= 1;
3428                print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
3429                      "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 5)) . "</i></td>\n" .
3430                      "<td>" .
3431                      $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}), -class => "list subject"},
3432                               esc_html(chop_str($co{'title'}, 50)) . "<br/>");
3433                my $comment = $co{'comment'};
3434                foreach my $line (@$comment) {
3435                        if ($line =~ m/^(.*)($search_regexp)(.*)$/i) {
3436                                my $lead = esc_html($1) || "";
3437                                $lead = chop_str($lead, 30, 10);
3438                                my $match = esc_html($2) || "";
3439                                my $trail = esc_html($3) || "";
3440                                $trail = chop_str($trail, 30, 10);
3441                                my $text = "$lead<span class=\"match\">$match</span>$trail";
3442                                print chop_str($text, 80, 5) . "<br/>\n";
3443                        }
3444                }
3445                print "</td>\n" .
3446                      "<td class=\"link\">" .
3447                      $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})}, "commit") .
3448                      " | " .
3449                      $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$co{'id'})}, "tree");
3450                print "</td>\n" .
3451                      "</tr>\n";
3452        }
3453        if (defined $extra) {
3454                print "<tr>\n" .
3455                      "<td colspan=\"3\">$extra</td>\n" .
3456                      "</tr>\n";
3457        }
3458        print "</table>\n";
3459}
3460
3461## ======================================================================
3462## ======================================================================
3463## actions
3464
3465sub git_project_list {
3466        my $order = $cgi->param('o');
3467        if (defined $order && $order !~ m/none|project|descr|owner|age/) {
3468                die_error(undef, "Unknown order parameter");
3469        }
3470
3471        my @list = git_get_projects_list();
3472        if (!@list) {
3473                die_error(undef, "No projects found");
3474        }
3475
3476        git_header_html();
3477        if (-f $home_text) {
3478                print "<div class=\"index_include\">\n";
3479                open (my $fd, $home_text);
3480                print <$fd>;
3481                close $fd;
3482                print "</div>\n";
3483        }
3484        git_project_list_body(\@list, $order);
3485        git_footer_html();
3486}
3487
3488sub git_forks {
3489        my $order = $cgi->param('o');
3490        if (defined $order && $order !~ m/none|project|descr|owner|age/) {
3491                die_error(undef, "Unknown order parameter");
3492        }
3493
3494        my @list = git_get_projects_list($project);
3495        if (!@list) {
3496                die_error(undef, "No forks found");
3497        }
3498
3499        git_header_html();
3500        git_print_page_nav('','');
3501        git_print_header_div('summary', "$project forks");
3502        git_project_list_body(\@list, $order);
3503        git_footer_html();
3504}
3505
3506sub git_project_index {
3507        my @projects = git_get_projects_list($project);
3508
3509        print $cgi->header(
3510                -type => 'text/plain',
3511                -charset => 'utf-8',
3512                -content_disposition => 'inline; filename="index.aux"');
3513
3514        foreach my $pr (@projects) {
3515                if (!exists $pr->{'owner'}) {
3516                        $pr->{'owner'} = get_file_owner("$projectroot/$pr->{'path'}");
3517                }
3518
3519                my ($path, $owner) = ($pr->{'path'}, $pr->{'owner'});
3520                # quote as in CGI::Util::encode, but keep the slash, and use '+' for ' '
3521                $path  =~ s/([^a-zA-Z0-9_.\-\/ ])/sprintf("%%%02X", ord($1))/eg;
3522                $owner =~ s/([^a-zA-Z0-9_.\-\/ ])/sprintf("%%%02X", ord($1))/eg;
3523                $path  =~ s/ /\+/g;
3524                $owner =~ s/ /\+/g;
3525
3526                print "$path $owner\n";
3527        }
3528}
3529
3530sub git_summary {
3531        my $descr = git_get_project_description($project) || "none";
3532        my %co = parse_commit("HEAD");
3533        my %cd = %co ? parse_date($co{'committer_epoch'}, $co{'committer_tz'}) : ();
3534        my $head = $co{'id'};
3535
3536        my $owner = git_get_project_owner($project);
3537
3538        my $refs = git_get_references();
3539        # These get_*_list functions return one more to allow us to see if
3540        # there are more ...
3541        my @taglist  = git_get_tags_list(16);
3542        my @headlist = git_get_heads_list(16);
3543        my @forklist;
3544        my ($check_forks) = gitweb_check_feature('forks');
3545
3546        if ($check_forks) {
3547                @forklist = git_get_projects_list($project);
3548        }
3549
3550        git_header_html();
3551        git_print_page_nav('summary','', $head);
3552
3553        print "<div class=\"title\">&nbsp;</div>\n";
3554        print "<table cellspacing=\"0\">\n" .
3555              "<tr><td>description</td><td>" . esc_html($descr) . "</td></tr>\n" .
3556              "<tr><td>owner</td><td>$owner</td></tr>\n";
3557        if (defined $cd{'rfc2822'}) {
3558                print "<tr><td>last change</td><td>$cd{'rfc2822'}</td></tr>\n";
3559        }
3560
3561        # use per project git URL list in $projectroot/$project/cloneurl
3562        # or make project git URL from git base URL and project name
3563        my $url_tag = "URL";
3564        my @url_list = git_get_project_url_list($project);
3565        @url_list = map { "$_/$project" } @git_base_url_list unless @url_list;
3566        foreach my $git_url (@url_list) {
3567                next unless $git_url;
3568                print "<tr><td>$url_tag</td><td>$git_url</td></tr>\n";
3569                $url_tag = "";
3570        }
3571        print "</table>\n";
3572
3573        if (-s "$projectroot/$project/README.html") {
3574                if (open my $fd, "$projectroot/$project/README.html") {
3575                        print "<div class=\"title\">readme</div>\n";
3576                        print $_ while (<$fd>);
3577                        close $fd;
3578                }
3579        }
3580
3581        # we need to request one more than 16 (0..15) to check if
3582        # those 16 are all
3583        my @commitlist = $head ? parse_commits($head, 17) : ();
3584        if (@commitlist) {
3585                git_print_header_div('shortlog');
3586                git_shortlog_body(\@commitlist, 0, 15, $refs,
3587                                  $#commitlist <=  15 ? undef :
3588                                  $cgi->a({-href => href(action=>"shortlog")}, "..."));
3589        }
3590
3591        if (@taglist) {
3592                git_print_header_div('tags');
3593                git_tags_body(\@taglist, 0, 15,
3594                              $#taglist <=  15 ? undef :
3595                              $cgi->a({-href => href(action=>"tags")}, "..."));
3596        }
3597
3598        if (@headlist) {
3599                git_print_header_div('heads');
3600                git_heads_body(\@headlist, $head, 0, 15,
3601                               $#headlist <= 15 ? undef :
3602                               $cgi->a({-href => href(action=>"heads")}, "..."));
3603        }
3604
3605        if (@forklist) {
3606                git_print_header_div('forks');
3607                git_project_list_body(\@forklist, undef, 0, 15,
3608                                      $#forklist <= 15 ? undef :
3609                                      $cgi->a({-href => href(action=>"forks")}, "..."),
3610                                      'noheader');
3611        }
3612
3613        git_footer_html();
3614}
3615
3616sub git_tag {
3617        my $head = git_get_head_hash($project);
3618        git_header_html();
3619        git_print_page_nav('','', $head,undef,$head);
3620        my %tag = parse_tag($hash);
3621
3622        if (! %tag) {
3623                die_error(undef, "Unknown tag object");
3624        }
3625
3626        git_print_header_div('commit', esc_html($tag{'name'}), $hash);
3627        print "<div class=\"title_text\">\n" .
3628              "<table cellspacing=\"0\">\n" .
3629              "<tr>\n" .
3630              "<td>object</td>\n" .
3631              "<td>" . $cgi->a({-class => "list", -href => href(action=>$tag{'type'}, hash=>$tag{'object'})},
3632                               $tag{'object'}) . "</td>\n" .
3633              "<td class=\"link\">" . $cgi->a({-href => href(action=>$tag{'type'}, hash=>$tag{'object'})},
3634                                              $tag{'type'}) . "</td>\n" .
3635              "</tr>\n";
3636        if (defined($tag{'author'})) {
3637                my %ad = parse_date($tag{'epoch'}, $tag{'tz'});
3638                print "<tr><td>author</td><td>" . esc_html($tag{'author'}) . "</td></tr>\n";
3639                print "<tr><td></td><td>" . $ad{'rfc2822'} .
3640                        sprintf(" (%02d:%02d %s)", $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'}) .
3641                        "</td></tr>\n";
3642        }
3643        print "</table>\n\n" .
3644              "</div>\n";
3645        print "<div class=\"page_body\">";
3646        my $comment = $tag{'comment'};
3647        foreach my $line (@$comment) {
3648                chomp $line;
3649                print esc_html($line, -nbsp=>1) . "<br/>\n";
3650        }
3651        print "</div>\n";
3652        git_footer_html();
3653}
3654
3655sub git_blame2 {
3656        my $fd;
3657        my $ftype;
3658
3659        my ($have_blame) = gitweb_check_feature('blame');
3660        if (!$have_blame) {
3661                die_error('403 Permission denied', "Permission denied");
3662        }
3663        die_error('404 Not Found', "File name not defined") if (!$file_name);
3664        $hash_base ||= git_get_head_hash($project);
3665        die_error(undef, "Couldn't find base commit") unless ($hash_base);
3666        my %co = parse_commit($hash_base)
3667                or die_error(undef, "Reading commit failed");
3668        if (!defined $hash) {
3669                $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
3670                        or die_error(undef, "Error looking up file");
3671        }
3672        $ftype = git_get_type($hash);
3673        if ($ftype !~ "blob") {
3674                die_error('400 Bad Request', "Object is not a blob");
3675        }
3676        open ($fd, "-|", git_cmd(), "blame", '-p', '--',
3677              $file_name, $hash_base)
3678                or die_error(undef, "Open git-blame failed");
3679        git_header_html();
3680        my $formats_nav =
3681                $cgi->a({-href => href(action=>"blob", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
3682                        "blob") .
3683                " | " .
3684                $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
3685                        "history") .
3686                " | " .
3687                $cgi->a({-href => href(action=>"blame", file_name=>$file_name)},
3688                        "HEAD");
3689        git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
3690        git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
3691        git_print_page_path($file_name, $ftype, $hash_base);
3692        my @rev_color = (qw(light2 dark2));
3693        my $num_colors = scalar(@rev_color);
3694        my $current_color = 0;
3695        my $last_rev;
3696        print <<HTML;
3697<div class="page_body">
3698<table class="blame">
3699<tr><th>Commit</th><th>Line</th><th>Data</th></tr>
3700HTML
3701        my %metainfo = ();
3702        while (1) {
3703                $_ = <$fd>;
3704                last unless defined $_;
3705                my ($full_rev, $orig_lineno, $lineno, $group_size) =
3706                    /^([0-9a-f]{40}) (\d+) (\d+)(?: (\d+))?$/;
3707                if (!exists $metainfo{$full_rev}) {
3708                        $metainfo{$full_rev} = {};
3709                }
3710                my $meta = $metainfo{$full_rev};
3711                while (<$fd>) {
3712                        last if (s/^\t//);
3713                        if (/^(\S+) (.*)$/) {
3714                                $meta->{$1} = $2;
3715                        }
3716                }
3717                my $data = $_;
3718                chomp $data;
3719                my $rev = substr($full_rev, 0, 8);
3720                my $author = $meta->{'author'};
3721                my %date = parse_date($meta->{'author-time'},
3722                                      $meta->{'author-tz'});
3723                my $date = $date{'iso-tz'};
3724                if ($group_size) {
3725                        $current_color = ++$current_color % $num_colors;
3726                }
3727                print "<tr class=\"$rev_color[$current_color]\">\n";
3728                if ($group_size) {
3729                        print "<td class=\"sha1\"";
3730                        print " title=\"". esc_html($author) . ", $date\"";
3731                        print " rowspan=\"$group_size\"" if ($group_size > 1);
3732                        print ">";
3733                        print $cgi->a({-href => href(action=>"commit",
3734                                                     hash=>$full_rev,
3735                                                     file_name=>$file_name)},
3736                                      esc_html($rev));
3737                        print "</td>\n";
3738                }
3739                open (my $dd, "-|", git_cmd(), "rev-parse", "$full_rev^")
3740                        or die_error(undef, "Open git-rev-parse failed");
3741                my $parent_commit = <$dd>;
3742                close $dd;
3743                chomp($parent_commit);
3744                my $blamed = href(action => 'blame',
3745                                  file_name => $meta->{'filename'},
3746                                  hash_base => $parent_commit);
3747                print "<td class=\"linenr\">";
3748                print $cgi->a({ -href => "$blamed#l$orig_lineno",
3749                                -id => "l$lineno",
3750                                -class => "linenr" },
3751                              esc_html($lineno));
3752                print "</td>";
3753                print "<td class=\"pre\">" . esc_html($data) . "</td>\n";
3754                print "</tr>\n";
3755        }
3756        print "</table>\n";
3757        print "</div>";
3758        close $fd
3759                or print "Reading blob failed\n";
3760        git_footer_html();
3761}
3762
3763sub git_blame {
3764        my $fd;
3765
3766        my ($have_blame) = gitweb_check_feature('blame');
3767        if (!$have_blame) {
3768                die_error('403 Permission denied', "Permission denied");
3769        }
3770        die_error('404 Not Found', "File name not defined") if (!$file_name);
3771        $hash_base ||= git_get_head_hash($project);
3772        die_error(undef, "Couldn't find base commit") unless ($hash_base);
3773        my %co = parse_commit($hash_base)
3774                or die_error(undef, "Reading commit failed");
3775        if (!defined $hash) {
3776                $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
3777                        or die_error(undef, "Error lookup file");
3778        }
3779        open ($fd, "-|", git_cmd(), "annotate", '-l', '-t', '-r', $file_name, $hash_base)
3780                or die_error(undef, "Open git-annotate failed");
3781        git_header_html();
3782        my $formats_nav =
3783                $cgi->a({-href => href(action=>"blob", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
3784                        "blob") .
3785                " | " .
3786                $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
3787                        "history") .
3788                " | " .
3789                $cgi->a({-href => href(action=>"blame", file_name=>$file_name)},
3790                        "HEAD");
3791        git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
3792        git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
3793        git_print_page_path($file_name, 'blob', $hash_base);
3794        print "<div class=\"page_body\">\n";
3795        print <<HTML;
3796<table class="blame">
3797  <tr>
3798    <th>Commit</th>
3799    <th>Age</th>
3800    <th>Author</th>
3801    <th>Line</th>
3802    <th>Data</th>
3803  </tr>
3804HTML
3805        my @line_class = (qw(light dark));
3806        my $line_class_len = scalar (@line_class);
3807        my $line_class_num = $#line_class;
3808        while (my $line = <$fd>) {
3809                my $long_rev;
3810                my $short_rev;
3811                my $author;
3812                my $time;
3813                my $lineno;
3814                my $data;
3815                my $age;
3816                my $age_str;
3817                my $age_class;
3818
3819                chomp $line;
3820                $line_class_num = ($line_class_num + 1) % $line_class_len;
3821
3822                if ($line =~ m/^([0-9a-fA-F]{40})\t\(\s*([^\t]+)\t(\d+) [+-]\d\d\d\d\t(\d+)\)(.*)$/) {
3823                        $long_rev = $1;
3824                        $author   = $2;
3825                        $time     = $3;
3826                        $lineno   = $4;
3827                        $data     = $5;
3828                } else {
3829                        print qq(  <tr><td colspan="5" class="error">Unable to parse: $line</td></tr>\n);
3830                        next;
3831                }
3832                $short_rev  = substr ($long_rev, 0, 8);
3833                $age        = time () - $time;
3834                $age_str    = age_string ($age);
3835                $age_str    =~ s/ /&nbsp;/g;
3836                $age_class  = age_class($age);
3837                $author     = esc_html ($author);
3838                $author     =~ s/ /&nbsp;/g;
3839
3840                $data = untabify($data);
3841                $data = esc_html ($data);
3842
3843                print <<HTML;
3844  <tr class="$line_class[$line_class_num]">
3845    <td class="sha1"><a href="${\href (action=>"commit", hash=>$long_rev)}" class="text">$short_rev..</a></td>
3846    <td class="$age_class">$age_str</td>
3847    <td>$author</td>
3848    <td class="linenr"><a id="$lineno" href="#$lineno" class="linenr">$lineno</a></td>
3849    <td class="pre">$data</td>
3850  </tr>
3851HTML
3852        } # while (my $line = <$fd>)
3853        print "</table>\n\n";
3854        close $fd
3855                or print "Reading blob failed.\n";
3856        print "</div>";
3857        git_footer_html();
3858}
3859
3860sub git_tags {
3861        my $head = git_get_head_hash($project);
3862        git_header_html();
3863        git_print_page_nav('','', $head,undef,$head);
3864        git_print_header_div('summary', $project);
3865
3866        my @tagslist = git_get_tags_list();
3867        if (@tagslist) {
3868                git_tags_body(\@tagslist);
3869        }
3870        git_footer_html();
3871}
3872
3873sub git_heads {
3874        my $head = git_get_head_hash($project);
3875        git_header_html();
3876        git_print_page_nav('','', $head,undef,$head);
3877        git_print_header_div('summary', $project);
3878
3879        my @headslist = git_get_heads_list();
3880        if (@headslist) {
3881                git_heads_body(\@headslist, $head);
3882        }
3883        git_footer_html();
3884}
3885
3886sub git_blob_plain {
3887        my $expires;
3888
3889        if (!defined $hash) {
3890                if (defined $file_name) {
3891                        my $base = $hash_base || git_get_head_hash($project);
3892                        $hash = git_get_hash_by_path($base, $file_name, "blob")
3893                                or die_error(undef, "Error lookup file");
3894                } else {
3895                        die_error(undef, "No file name defined");
3896                }
3897        } elsif ($hash =~ m/^[0-9a-fA-F]{40}$/) {
3898                # blobs defined by non-textual hash id's can be cached
3899                $expires = "+1d";
3900        }
3901
3902        my $type = shift;
3903        open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
3904                or die_error(undef, "Couldn't cat $file_name, $hash");
3905
3906        $type ||= blob_mimetype($fd, $file_name);
3907
3908        # save as filename, even when no $file_name is given
3909        my $save_as = "$hash";
3910        if (defined $file_name) {
3911                $save_as = $file_name;
3912        } elsif ($type =~ m/^text\//) {
3913                $save_as .= '.txt';
3914        }
3915
3916        print $cgi->header(
3917                -type => "$type",
3918                -expires=>$expires,
3919                -content_disposition => 'inline; filename="' . "$save_as" . '"');
3920        undef $/;
3921        binmode STDOUT, ':raw';
3922        print <$fd>;
3923        binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
3924        $/ = "\n";
3925        close $fd;
3926}
3927
3928sub git_blob {
3929        my $expires;
3930
3931        if (!defined $hash) {
3932                if (defined $file_name) {
3933                        my $base = $hash_base || git_get_head_hash($project);
3934                        $hash = git_get_hash_by_path($base, $file_name, "blob")
3935                                or die_error(undef, "Error lookup file");
3936                } else {
3937                        die_error(undef, "No file name defined");
3938                }
3939        } elsif ($hash =~ m/^[0-9a-fA-F]{40}$/) {
3940                # blobs defined by non-textual hash id's can be cached
3941                $expires = "+1d";
3942        }
3943
3944        my ($have_blame) = gitweb_check_feature('blame');
3945        open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
3946                or die_error(undef, "Couldn't cat $file_name, $hash");
3947        my $mimetype = blob_mimetype($fd, $file_name);
3948        if ($mimetype !~ m!^(?:text/|image/(?:gif|png|jpeg)$)!) {
3949                close $fd;
3950                return git_blob_plain($mimetype);
3951        }
3952        # we can have blame only for text/* mimetype
3953        $have_blame &&= ($mimetype =~ m!^text/!);
3954
3955        git_header_html(undef, $expires);
3956        my $formats_nav = '';
3957        if (defined $hash_base && (my %co = parse_commit($hash_base))) {
3958                if (defined $file_name) {
3959                        if ($have_blame) {
3960                                $formats_nav .=
3961                                        $cgi->a({-href => href(action=>"blame", hash_base=>$hash_base,
3962                                                               hash=>$hash, file_name=>$file_name)},
3963                                                "blame") .
3964                                        " | ";
3965                        }
3966                        $formats_nav .=
3967                                $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
3968                                                       hash=>$hash, file_name=>$file_name)},
3969                                        "history") .
3970                                " | " .
3971                                $cgi->a({-href => href(action=>"blob_plain",
3972                                                       hash=>$hash, file_name=>$file_name)},
3973                                        "raw") .
3974                                " | " .
3975                                $cgi->a({-href => href(action=>"blob",
3976                                                       hash_base=>"HEAD", file_name=>$file_name)},
3977                                        "HEAD");
3978                } else {
3979                        $formats_nav .=
3980                                $cgi->a({-href => href(action=>"blob_plain", hash=>$hash)}, "raw");
3981                }
3982                git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
3983                git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
3984        } else {
3985                print "<div class=\"page_nav\">\n" .
3986                      "<br/><br/></div>\n" .
3987                      "<div class=\"title\">$hash</div>\n";
3988        }
3989        git_print_page_path($file_name, "blob", $hash_base);
3990        print "<div class=\"page_body\">\n";
3991        if ($mimetype =~ m!^text/!) {
3992                my $nr;
3993                while (my $line = <$fd>) {
3994                        chomp $line;
3995                        $nr++;
3996                        $line = untabify($line);
3997                        printf "<div class=\"pre\"><a id=\"l%i\" href=\"#l%i\" class=\"linenr\">%4i</a> %s</div>\n",
3998                               $nr, $nr, $nr, esc_html($line, -nbsp=>1);
3999                }
4000        } elsif ($mimetype =~ m!^image/!) {
4001                print qq!<img type="$mimetype"!;
4002                if ($file_name) {
4003                        print qq! alt="$file_name" title="$file_name"!;
4004                }
4005                print qq! src="! .
4006                      href(action=>"blob_plain", hash=>$hash,
4007                           hash_base=>$hash_base, file_name=>$file_name) .
4008                      qq!" />\n!;
4009        }
4010        close $fd
4011                or print "Reading blob failed.\n";
4012        print "</div>";
4013        git_footer_html();
4014}
4015
4016sub git_tree {
4017        my $have_snapshot = gitweb_have_snapshot();
4018
4019        if (!defined $hash_base) {
4020                $hash_base = "HEAD";
4021        }
4022        if (!defined $hash) {
4023                if (defined $file_name) {
4024                        $hash = git_get_hash_by_path($hash_base, $file_name, "tree");
4025                } else {
4026                        $hash = $hash_base;
4027                }
4028        }
4029        $/ = "\0";
4030        open my $fd, "-|", git_cmd(), "ls-tree", '-z', $hash
4031                or die_error(undef, "Open git-ls-tree failed");
4032        my @entries = map { chomp; $_ } <$fd>;
4033        close $fd or die_error(undef, "Reading tree failed");
4034        $/ = "\n";
4035
4036        my $refs = git_get_references();
4037        my $ref = format_ref_marker($refs, $hash_base);
4038        git_header_html();
4039        my $basedir = '';
4040        my ($have_blame) = gitweb_check_feature('blame');
4041        if (defined $hash_base && (my %co = parse_commit($hash_base))) {
4042                my @views_nav = ();
4043                if (defined $file_name) {
4044                        push @views_nav,
4045                                $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
4046                                                       hash=>$hash, file_name=>$file_name)},
4047                                        "history"),
4048                                $cgi->a({-href => href(action=>"tree",
4049                                                       hash_base=>"HEAD", file_name=>$file_name)},
4050                                        "HEAD"),
4051                }
4052                if ($have_snapshot) {
4053                        # FIXME: Should be available when we have no hash base as well.
4054                        push @views_nav,
4055                                $cgi->a({-href => href(action=>"snapshot", hash=>$hash)},
4056                                        "snapshot");
4057                }
4058                git_print_page_nav('tree','', $hash_base, undef, undef, join(' | ', @views_nav));
4059                git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash_base);
4060        } else {
4061                undef $hash_base;
4062                print "<div class=\"page_nav\">\n";
4063                print "<br/><br/></div>\n";
4064                print "<div class=\"title\">$hash</div>\n";
4065        }
4066        if (defined $file_name) {
4067                $basedir = $file_name;
4068                if ($basedir ne '' && substr($basedir, -1) ne '/') {
4069                        $basedir .= '/';
4070                }
4071        }
4072        git_print_page_path($file_name, 'tree', $hash_base);
4073        print "<div class=\"page_body\">\n";
4074        print "<table cellspacing=\"0\">\n";
4075        my $alternate = 1;
4076        # '..' (top directory) link if possible
4077        if (defined $hash_base &&
4078            defined $file_name && $file_name =~ m![^/]+$!) {
4079                if ($alternate) {
4080                        print "<tr class=\"dark\">\n";
4081                } else {
4082                        print "<tr class=\"light\">\n";
4083                }
4084                $alternate ^= 1;
4085
4086                my $up = $file_name;
4087                $up =~ s!/?[^/]+$!!;
4088                undef $up unless $up;
4089                # based on git_print_tree_entry
4090                print '<td class="mode">' . mode_str('040000') . "</td>\n";
4091                print '<td class="list">';
4092                print $cgi->a({-href => href(action=>"tree", hash_base=>$hash_base,
4093                                             file_name=>$up)},
4094                              "..");
4095                print "</td>\n";
4096                print "<td class=\"link\"></td>\n";
4097
4098                print "</tr>\n";
4099        }
4100        foreach my $line (@entries) {
4101                my %t = parse_ls_tree_line($line, -z => 1);
4102
4103                if ($alternate) {
4104                        print "<tr class=\"dark\">\n";
4105                } else {
4106                        print "<tr class=\"light\">\n";
4107                }
4108                $alternate ^= 1;
4109
4110                git_print_tree_entry(\%t, $basedir, $hash_base, $have_blame);
4111
4112                print "</tr>\n";
4113        }
4114        print "</table>\n" .
4115              "</div>";
4116        git_footer_html();
4117}
4118
4119sub git_snapshot {
4120        my ($ctype, $suffix, $command) = gitweb_check_feature('snapshot');
4121        my $have_snapshot = (defined $ctype && defined $suffix);
4122        if (!$have_snapshot) {
4123                die_error('403 Permission denied', "Permission denied");
4124        }
4125
4126        if (!defined $hash) {
4127                $hash = git_get_head_hash($project);
4128        }
4129
4130        my $git = git_cmd_str();
4131        my $name = $project;
4132        $name =~ s/\047/\047\\\047\047/g;
4133        my $filename = to_utf8(basename($project));
4134        my $cmd;
4135        if ($suffix eq 'zip') {
4136                $filename .= "-$hash.$suffix";
4137                $cmd = "$git archive --format=zip --prefix=\'$name\'/ $hash";
4138        } else {
4139                $filename .= "-$hash.tar.$suffix";
4140                $cmd = "$git archive --format=tar --prefix=\'$name\'/ $hash | $command";
4141        }
4142
4143        print $cgi->header(
4144                -type => "application/$ctype",
4145                -content_disposition => 'inline; filename="' . "$filename" . '"',
4146                -status => '200 OK');
4147
4148        open my $fd, "-|", $cmd
4149                or die_error(undef, "Execute git-archive failed");
4150        binmode STDOUT, ':raw';
4151        print <$fd>;
4152        binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
4153        close $fd;
4154
4155}
4156
4157sub git_log {
4158        my $head = git_get_head_hash($project);
4159        if (!defined $hash) {
4160                $hash = $head;
4161        }
4162        if (!defined $page) {
4163                $page = 0;
4164        }
4165        my $refs = git_get_references();
4166
4167        my @commitlist = parse_commits($hash, 101, (100 * $page));
4168
4169        my $paging_nav = format_paging_nav('log', $hash, $head, $page, (100 * ($page+1)));
4170
4171        git_header_html();
4172        git_print_page_nav('log','', $hash,undef,undef, $paging_nav);
4173
4174        if (!@commitlist) {
4175                my %co = parse_commit($hash);
4176
4177                git_print_header_div('summary', $project);
4178                print "<div class=\"page_body\"> Last change $co{'age_string'}.<br/><br/></div>\n";
4179        }
4180        my $to = ($#commitlist >= 99) ? (99) : ($#commitlist);
4181        for (my $i = 0; $i <= $to; $i++) {
4182                my %co = %{$commitlist[$i]};
4183                next if !%co;
4184                my $commit = $co{'id'};
4185                my $ref = format_ref_marker($refs, $commit);
4186                my %ad = parse_date($co{'author_epoch'});
4187                git_print_header_div('commit',
4188                               "<span class=\"age\">$co{'age_string'}</span>" .
4189                               esc_html($co{'title'}) . $ref,
4190                               $commit);
4191                print "<div class=\"title_text\">\n" .
4192                      "<div class=\"log_link\">\n" .
4193                      $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") .
4194                      " | " .
4195                      $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") .
4196                      " | " .
4197                      $cgi->a({-href => href(action=>"tree", hash=>$commit, hash_base=>$commit)}, "tree") .
4198                      "<br/>\n" .
4199                      "</div>\n" .
4200                      "<i>" . esc_html($co{'author_name'}) .  " [$ad{'rfc2822'}]</i><br/>\n" .
4201                      "</div>\n";
4202
4203                print "<div class=\"log_body\">\n";
4204                git_print_log($co{'comment'}, -final_empty_line=> 1);
4205                print "</div>\n";
4206        }
4207        if ($#commitlist >= 100) {
4208                print "<div class=\"page_nav\">\n";
4209                print $cgi->a({-href => href(action=>"log", hash=>$hash, page=>$page+1),
4210                               -accesskey => "n", -title => "Alt-n"}, "next");
4211                print "</div>\n";
4212        }
4213        git_footer_html();
4214}
4215
4216sub git_commit {
4217        $hash ||= $hash_base || "HEAD";
4218        my %co = parse_commit($hash);
4219        if (!%co) {
4220                die_error(undef, "Unknown commit object");
4221        }
4222        my %ad = parse_date($co{'author_epoch'}, $co{'author_tz'});
4223        my %cd = parse_date($co{'committer_epoch'}, $co{'committer_tz'});
4224
4225        my $parent  = $co{'parent'};
4226        my $parents = $co{'parents'}; # listref
4227
4228        # we need to prepare $formats_nav before any parameter munging
4229        my $formats_nav;
4230        if (!defined $parent) {
4231                # --root commitdiff
4232                $formats_nav .= '(initial)';
4233        } elsif (@$parents == 1) {
4234                # single parent commit
4235                $formats_nav .=
4236                        '(parent: ' .
4237                        $cgi->a({-href => href(action=>"commit",
4238                                               hash=>$parent)},
4239                                esc_html(substr($parent, 0, 7))) .
4240                        ')';
4241        } else {
4242                # merge commit
4243                $formats_nav .=
4244                        '(merge: ' .
4245                        join(' ', map {
4246                                $cgi->a({-href => href(action=>"commit",
4247                                                       hash=>$_)},
4248                                        esc_html(substr($_, 0, 7)));
4249                        } @$parents ) .
4250                        ')';
4251        }
4252
4253        if (!defined $parent) {
4254                $parent = "--root";
4255        }
4256        my @difftree;
4257        open my $fd, "-|", git_cmd(), "diff-tree", '-r', "--no-commit-id",
4258                @diff_opts,
4259                (@$parents <= 1 ? $parent : '-c'),
4260                $hash, "--"
4261                or die_error(undef, "Open git-diff-tree failed");
4262        @difftree = map { chomp; $_ } <$fd>;
4263        close $fd or die_error(undef, "Reading git-diff-tree failed");
4264
4265        # non-textual hash id's can be cached
4266        my $expires;
4267        if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
4268                $expires = "+1d";
4269        }
4270        my $refs = git_get_references();
4271        my $ref = format_ref_marker($refs, $co{'id'});
4272
4273        my $have_snapshot = gitweb_have_snapshot();
4274
4275        git_header_html(undef, $expires);
4276        git_print_page_nav('commit', '',
4277                           $hash, $co{'tree'}, $hash,
4278                           $formats_nav);
4279
4280        if (defined $co{'parent'}) {
4281                git_print_header_div('commitdiff', esc_html($co{'title'}) . $ref, $hash);
4282        } else {
4283                git_print_header_div('tree', esc_html($co{'title'}) . $ref, $co{'tree'}, $hash);
4284        }
4285        print "<div class=\"title_text\">\n" .
4286              "<table cellspacing=\"0\">\n";
4287        print "<tr><td>author</td><td>" . esc_html($co{'author'}) . "</td></tr>\n".
4288              "<tr>" .
4289              "<td></td><td> $ad{'rfc2822'}";
4290        if ($ad{'hour_local'} < 6) {
4291                printf(" (<span class=\"atnight\">%02d:%02d</span> %s)",
4292                       $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
4293        } else {
4294                printf(" (%02d:%02d %s)",
4295                       $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
4296        }
4297        print "</td>" .
4298              "</tr>\n";
4299        print "<tr><td>committer</td><td>" . esc_html($co{'committer'}) . "</td></tr>\n";
4300        print "<tr><td></td><td> $cd{'rfc2822'}" .
4301              sprintf(" (%02d:%02d %s)", $cd{'hour_local'}, $cd{'minute_local'}, $cd{'tz_local'}) .
4302              "</td></tr>\n";
4303        print "<tr><td>commit</td><td class=\"sha1\">$co{'id'}</td></tr>\n";
4304        print "<tr>" .
4305              "<td>tree</td>" .
4306              "<td class=\"sha1\">" .
4307              $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash),
4308                       class => "list"}, $co{'tree'}) .
4309              "</td>" .
4310              "<td class=\"link\">" .
4311              $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash)},
4312                      "tree");
4313        if ($have_snapshot) {
4314                print " | " .
4315                      $cgi->a({-href => href(action=>"snapshot", hash=>$hash)}, "snapshot");
4316        }
4317        print "</td>" .
4318              "</tr>\n";
4319
4320        foreach my $par (@$parents) {
4321                print "<tr>" .
4322                      "<td>parent</td>" .
4323                      "<td class=\"sha1\">" .
4324                      $cgi->a({-href => href(action=>"commit", hash=>$par),
4325                               class => "list"}, $par) .
4326                      "</td>" .
4327                      "<td class=\"link\">" .
4328                      $cgi->a({-href => href(action=>"commit", hash=>$par)}, "commit") .
4329                      " | " .
4330                      $cgi->a({-href => href(action=>"commitdiff", hash=>$hash, hash_parent=>$par)}, "diff") .
4331                      "</td>" .
4332                      "</tr>\n";
4333        }
4334        print "</table>".
4335              "</div>\n";
4336
4337        print "<div class=\"page_body\">\n";
4338        git_print_log($co{'comment'});
4339        print "</div>\n";
4340
4341        git_difftree_body(\@difftree, $hash, @$parents);
4342
4343        git_footer_html();
4344}
4345
4346sub git_object {
4347        # object is defined by:
4348        # - hash or hash_base alone
4349        # - hash_base and file_name
4350        my $type;
4351
4352        # - hash or hash_base alone
4353        if ($hash || ($hash_base && !defined $file_name)) {
4354                my $object_id = $hash || $hash_base;
4355
4356                my $git_command = git_cmd_str();
4357                open my $fd, "-|", "$git_command cat-file -t $object_id 2>/dev/null"
4358                        or die_error('404 Not Found', "Object does not exist");
4359                $type = <$fd>;
4360                chomp $type;
4361                close $fd
4362                        or die_error('404 Not Found', "Object does not exist");
4363
4364        # - hash_base and file_name
4365        } elsif ($hash_base && defined $file_name) {
4366                $file_name =~ s,/+$,,;
4367
4368                system(git_cmd(), "cat-file", '-e', $hash_base) == 0
4369                        or die_error('404 Not Found', "Base object does not exist");
4370
4371                # here errors should not hapen
4372                open my $fd, "-|", git_cmd(), "ls-tree", $hash_base, "--", $file_name
4373                        or die_error(undef, "Open git-ls-tree failed");
4374                my $line = <$fd>;
4375                close $fd;
4376
4377                #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
4378                unless ($line && $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t/) {
4379                        die_error('404 Not Found', "File or directory for given base does not exist");
4380                }
4381                $type = $2;
4382                $hash = $3;
4383        } else {
4384                die_error('404 Not Found', "Not enough information to find object");
4385        }
4386
4387        print $cgi->redirect(-uri => href(action=>$type, -full=>1,
4388                                          hash=>$hash, hash_base=>$hash_base,
4389                                          file_name=>$file_name),
4390                             -status => '302 Found');
4391}
4392
4393sub git_blobdiff {
4394        my $format = shift || 'html';
4395
4396        my $fd;
4397        my @difftree;
4398        my %diffinfo;
4399        my $expires;
4400
4401        # preparing $fd and %diffinfo for git_patchset_body
4402        # new style URI
4403        if (defined $hash_base && defined $hash_parent_base) {
4404                if (defined $file_name) {
4405                        # read raw output
4406                        open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4407                                $hash_parent_base, $hash_base,
4408                                "--", (defined $file_parent ? $file_parent : ()), $file_name
4409                                or die_error(undef, "Open git-diff-tree failed");
4410                        @difftree = map { chomp; $_ } <$fd>;
4411                        close $fd
4412                                or die_error(undef, "Reading git-diff-tree failed");
4413                        @difftree
4414                                or die_error('404 Not Found', "Blob diff not found");
4415
4416                } elsif (defined $hash &&
4417                         $hash =~ /[0-9a-fA-F]{40}/) {
4418                        # try to find filename from $hash
4419
4420                        # read filtered raw output
4421                        open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4422                                $hash_parent_base, $hash_base, "--"
4423                                or die_error(undef, "Open git-diff-tree failed");
4424                        @difftree =
4425                                # ':100644 100644 03b21826... 3b93d5e7... M     ls-files.c'
4426                                # $hash == to_id
4427                                grep { /^:[0-7]{6} [0-7]{6} [0-9a-fA-F]{40} $hash/ }
4428                                map { chomp; $_ } <$fd>;
4429                        close $fd
4430                                or die_error(undef, "Reading git-diff-tree failed");
4431                        @difftree
4432                                or die_error('404 Not Found', "Blob diff not found");
4433
4434                } else {
4435                        die_error('404 Not Found', "Missing one of the blob diff parameters");
4436                }
4437
4438                if (@difftree > 1) {
4439                        die_error('404 Not Found', "Ambiguous blob diff specification");
4440                }
4441
4442                %diffinfo = parse_difftree_raw_line($difftree[0]);
4443                $file_parent ||= $diffinfo{'from_file'} || $file_name || $diffinfo{'file'};
4444                $file_name   ||= $diffinfo{'to_file'}   || $diffinfo{'file'};
4445
4446                $hash_parent ||= $diffinfo{'from_id'};
4447                $hash        ||= $diffinfo{'to_id'};
4448
4449                # non-textual hash id's can be cached
4450                if ($hash_base =~ m/^[0-9a-fA-F]{40}$/ &&
4451                    $hash_parent_base =~ m/^[0-9a-fA-F]{40}$/) {
4452                        $expires = '+1d';
4453                }
4454
4455                # open patch output
4456                open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4457                        '-p', ($format eq 'html' ? "--full-index" : ()),
4458                        $hash_parent_base, $hash_base,
4459                        "--", (defined $file_parent ? $file_parent : ()), $file_name
4460                        or die_error(undef, "Open git-diff-tree failed");
4461        }
4462
4463        # old/legacy style URI
4464        if (!%diffinfo && # if new style URI failed
4465            defined $hash && defined $hash_parent) {
4466                # fake git-diff-tree raw output
4467                $diffinfo{'from_mode'} = $diffinfo{'to_mode'} = "blob";
4468                $diffinfo{'from_id'} = $hash_parent;
4469                $diffinfo{'to_id'}   = $hash;
4470                if (defined $file_name) {
4471                        if (defined $file_parent) {
4472                                $diffinfo{'status'} = '2';
4473                                $diffinfo{'from_file'} = $file_parent;
4474                                $diffinfo{'to_file'}   = $file_name;
4475                        } else { # assume not renamed
4476                                $diffinfo{'status'} = '1';
4477                                $diffinfo{'from_file'} = $file_name;
4478                                $diffinfo{'to_file'}   = $file_name;
4479                        }
4480                } else { # no filename given
4481                        $diffinfo{'status'} = '2';
4482                        $diffinfo{'from_file'} = $hash_parent;
4483                        $diffinfo{'to_file'}   = $hash;
4484                }
4485
4486                # non-textual hash id's can be cached
4487                if ($hash =~ m/^[0-9a-fA-F]{40}$/ &&
4488                    $hash_parent =~ m/^[0-9a-fA-F]{40}$/) {
4489                        $expires = '+1d';
4490                }
4491
4492                # open patch output
4493                open $fd, "-|", git_cmd(), "diff", @diff_opts,
4494                        '-p', ($format eq 'html' ? "--full-index" : ()),
4495                        $hash_parent, $hash, "--"
4496                        or die_error(undef, "Open git-diff failed");
4497        } else  {
4498                die_error('404 Not Found', "Missing one of the blob diff parameters")
4499                        unless %diffinfo;
4500        }
4501
4502        # header
4503        if ($format eq 'html') {
4504                my $formats_nav =
4505                        $cgi->a({-href => href(action=>"blobdiff_plain",
4506                                               hash=>$hash, hash_parent=>$hash_parent,
4507                                               hash_base=>$hash_base, hash_parent_base=>$hash_parent_base,
4508                                               file_name=>$file_name, file_parent=>$file_parent)},
4509                                "raw");
4510                git_header_html(undef, $expires);
4511                if (defined $hash_base && (my %co = parse_commit($hash_base))) {
4512                        git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
4513                        git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
4514                } else {
4515                        print "<div class=\"page_nav\"><br/>$formats_nav<br/></div>\n";
4516                        print "<div class=\"title\">$hash vs $hash_parent</div>\n";
4517                }
4518                if (defined $file_name) {
4519                        git_print_page_path($file_name, "blob", $hash_base);
4520                } else {
4521                        print "<div class=\"page_path\"></div>\n";
4522                }
4523
4524        } elsif ($format eq 'plain') {
4525                print $cgi->header(
4526                        -type => 'text/plain',
4527                        -charset => 'utf-8',
4528                        -expires => $expires,
4529                        -content_disposition => 'inline; filename="' . "$file_name" . '.patch"');
4530
4531                print "X-Git-Url: " . $cgi->self_url() . "\n\n";
4532
4533        } else {
4534                die_error(undef, "Unknown blobdiff format");
4535        }
4536
4537        # patch
4538        if ($format eq 'html') {
4539                print "<div class=\"page_body\">\n";
4540
4541                git_patchset_body($fd, [ \%diffinfo ], $hash_base, $hash_parent_base);
4542                close $fd;
4543
4544                print "</div>\n"; # class="page_body"
4545                git_footer_html();
4546
4547        } else {
4548                while (my $line = <$fd>) {
4549                        $line =~ s!a/($hash|$hash_parent)!'a/'.esc_path($diffinfo{'from_file'})!eg;
4550                        $line =~ s!b/($hash|$hash_parent)!'b/'.esc_path($diffinfo{'to_file'})!eg;
4551
4552                        print $line;
4553
4554                        last if $line =~ m!^\+\+\+!;
4555                }
4556                local $/ = undef;
4557                print <$fd>;
4558                close $fd;
4559        }
4560}
4561
4562sub git_blobdiff_plain {
4563        git_blobdiff('plain');
4564}
4565
4566sub git_commitdiff {
4567        my $format = shift || 'html';
4568        $hash ||= $hash_base || "HEAD";
4569        my %co = parse_commit($hash);
4570        if (!%co) {
4571                die_error(undef, "Unknown commit object");
4572        }
4573
4574        # we need to prepare $formats_nav before any parameter munging
4575        my $formats_nav;
4576        if ($format eq 'html') {
4577                $formats_nav =
4578                        $cgi->a({-href => href(action=>"commitdiff_plain",
4579                                               hash=>$hash, hash_parent=>$hash_parent)},
4580                                "raw");
4581
4582                if (defined $hash_parent) {
4583                        # commitdiff with two commits given
4584                        my $hash_parent_short = $hash_parent;
4585                        if ($hash_parent =~ m/^[0-9a-fA-F]{40}$/) {
4586                                $hash_parent_short = substr($hash_parent, 0, 7);
4587                        }
4588                        $formats_nav .=
4589                                ' (from';
4590                        for (my $i = 0; $i < @{$co{'parents'}}; $i++) {
4591                                if ($co{'parents'}[$i] eq $hash_parent) {
4592                                        $formats_nav .= ' parent ' . ($i+1);
4593                                        last;
4594                                }
4595                        }
4596                        $formats_nav .= ': ' .
4597                                $cgi->a({-href => href(action=>"commitdiff",
4598                                                       hash=>$hash_parent)},
4599                                        esc_html($hash_parent_short)) .
4600                                ')';
4601                } elsif (!$co{'parent'}) {
4602                        # --root commitdiff
4603                        $formats_nav .= ' (initial)';
4604                } elsif (scalar @{$co{'parents'}} == 1) {
4605                        # single parent commit
4606                        $formats_nav .=
4607                                ' (parent: ' .
4608                                $cgi->a({-href => href(action=>"commitdiff",
4609                                                       hash=>$co{'parent'})},
4610                                        esc_html(substr($co{'parent'}, 0, 7))) .
4611                                ')';
4612                } else {
4613                        # merge commit
4614                        $formats_nav .=
4615                                ' (merge: ' .
4616                                join(' ', map {
4617                                        $cgi->a({-href => href(action=>"commitdiff",
4618                                                               hash=>$_)},
4619                                                esc_html(substr($_, 0, 7)));
4620                                } @{$co{'parents'}} ) .
4621                                ')';
4622                }
4623        }
4624
4625        my $hash_parent_param = $hash_parent;
4626        if (!defined $hash_parent) {
4627                $hash_parent_param =
4628                        @{$co{'parents'}} > 1 ? '-c' : $co{'parent'} || '--root';
4629        }
4630
4631        # read commitdiff
4632        my $fd;
4633        my @difftree;
4634        if ($format eq 'html') {
4635                open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4636                        "--no-commit-id", "--patch-with-raw", "--full-index",
4637                        $hash_parent_param, $hash, "--"
4638                        or die_error(undef, "Open git-diff-tree failed");
4639
4640                while (my $line = <$fd>) {
4641                        chomp $line;
4642                        # empty line ends raw part of diff-tree output
4643                        last unless $line;
4644                        push @difftree, scalar parse_difftree_raw_line($line);
4645                }
4646
4647        } elsif ($format eq 'plain') {
4648                open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4649                        '-p', $hash_parent_param, $hash, "--"
4650                        or die_error(undef, "Open git-diff-tree failed");
4651
4652        } else {
4653                die_error(undef, "Unknown commitdiff format");
4654        }
4655
4656        # non-textual hash id's can be cached
4657        my $expires;
4658        if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
4659                $expires = "+1d";
4660        }
4661
4662        # write commit message
4663        if ($format eq 'html') {
4664                my $refs = git_get_references();
4665                my $ref = format_ref_marker($refs, $co{'id'});
4666
4667                git_header_html(undef, $expires);
4668                git_print_page_nav('commitdiff','', $hash,$co{'tree'},$hash, $formats_nav);
4669                git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash);
4670                git_print_authorship(\%co);
4671                print "<div class=\"page_body\">\n";
4672                if (@{$co{'comment'}} > 1) {
4673                        print "<div class=\"log\">\n";
4674                        git_print_log($co{'comment'}, -final_empty_line=> 1, -remove_title => 1);
4675                        print "</div>\n"; # class="log"
4676                }
4677
4678        } elsif ($format eq 'plain') {
4679                my $refs = git_get_references("tags");
4680                my $tagname = git_get_rev_name_tags($hash);
4681                my $filename = basename($project) . "-$hash.patch";
4682
4683                print $cgi->header(
4684                        -type => 'text/plain',
4685                        -charset => 'utf-8',
4686                        -expires => $expires,
4687                        -content_disposition => 'inline; filename="' . "$filename" . '"');
4688                my %ad = parse_date($co{'author_epoch'}, $co{'author_tz'});
4689                print <<TEXT;
4690From: $co{'author'}
4691Date: $ad{'rfc2822'} ($ad{'tz_local'})
4692Subject: $co{'title'}
4693TEXT
4694                print "X-Git-Tag: $tagname\n" if $tagname;
4695                print "X-Git-Url: " . $cgi->self_url() . "\n\n";
4696
4697                foreach my $line (@{$co{'comment'}}) {
4698                        print "$line\n";
4699                }
4700                print "---\n\n";
4701        }
4702
4703        # write patch
4704        if ($format eq 'html') {
4705                git_difftree_body(\@difftree, $hash, $hash_parent || @{$co{'parents'}});
4706                print "<br/>\n";
4707
4708                git_patchset_body($fd, \@difftree, $hash, $hash_parent || @{$co{'parents'}});
4709                close $fd;
4710                print "</div>\n"; # class="page_body"
4711                git_footer_html();
4712
4713        } elsif ($format eq 'plain') {
4714                local $/ = undef;
4715                print <$fd>;
4716                close $fd
4717                        or print "Reading git-diff-tree failed\n";
4718        }
4719}
4720
4721sub git_commitdiff_plain {
4722        git_commitdiff('plain');
4723}
4724
4725sub git_history {
4726        if (!defined $hash_base) {
4727                $hash_base = git_get_head_hash($project);
4728        }
4729        if (!defined $page) {
4730                $page = 0;
4731        }
4732        my $ftype;
4733        my %co = parse_commit($hash_base);
4734        if (!%co) {
4735                die_error(undef, "Unknown commit object");
4736        }
4737
4738        my $refs = git_get_references();
4739        my $limit = sprintf("--max-count=%i", (100 * ($page+1)));
4740
4741        if (!defined $hash && defined $file_name) {
4742                $hash = git_get_hash_by_path($hash_base, $file_name);
4743        }
4744        if (defined $hash) {
4745                $ftype = git_get_type($hash);
4746        }
4747
4748        my @commitlist = parse_commits($hash_base, 101, (100 * $page), "--full-history", $file_name);
4749
4750        my $paging_nav = '';
4751        if ($page > 0) {
4752                $paging_nav .=
4753                        $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
4754                                               file_name=>$file_name)},
4755                                "first");
4756                $paging_nav .= " &sdot; " .
4757                        $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
4758                                               file_name=>$file_name, page=>$page-1),
4759                                 -accesskey => "p", -title => "Alt-p"}, "prev");
4760        } else {
4761                $paging_nav .= "first";
4762                $paging_nav .= " &sdot; prev";
4763        }
4764        if ($#commitlist >= 100) {
4765                $paging_nav .= " &sdot; " .
4766                        $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
4767                                               file_name=>$file_name, page=>$page+1),
4768                                 -accesskey => "n", -title => "Alt-n"}, "next");
4769        } else {
4770                $paging_nav .= " &sdot; next";
4771        }
4772        my $next_link = '';
4773        if ($#commitlist >= 100) {
4774                $next_link =
4775                        $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
4776                                               file_name=>$file_name, page=>$page+1),
4777                                 -accesskey => "n", -title => "Alt-n"}, "next");
4778        }
4779
4780        git_header_html();
4781        git_print_page_nav('history','', $hash_base,$co{'tree'},$hash_base, $paging_nav);
4782        git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
4783        git_print_page_path($file_name, $ftype, $hash_base);
4784
4785        git_history_body(\@commitlist, 0, 99,
4786                         $refs, $hash_base, $ftype, $next_link);
4787
4788        git_footer_html();
4789}
4790
4791sub git_search {
4792        my ($have_search) = gitweb_check_feature('search');
4793        if (!$have_search) {
4794                die_error('403 Permission denied', "Permission denied");
4795        }
4796        if (!defined $searchtext) {
4797                die_error(undef, "Text field empty");
4798        }
4799        if (!defined $hash) {
4800                $hash = git_get_head_hash($project);
4801        }
4802        my %co = parse_commit($hash);
4803        if (!%co) {
4804                die_error(undef, "Unknown commit object");
4805        }
4806        if (!defined $page) {
4807                $page = 0;
4808        }
4809
4810        $searchtype ||= 'commit';
4811        if ($searchtype eq 'pickaxe') {
4812                # pickaxe may take all resources of your box and run for several minutes
4813                # with every query - so decide by yourself how public you make this feature
4814                my ($have_pickaxe) = gitweb_check_feature('pickaxe');
4815                if (!$have_pickaxe) {
4816                        die_error('403 Permission denied', "Permission denied");
4817                }
4818        }
4819        if ($searchtype eq 'grep') {
4820                my ($have_grep) = gitweb_check_feature('grep');
4821                if (!$have_grep) {
4822                        die_error('403 Permission denied', "Permission denied");
4823                }
4824        }
4825
4826        git_header_html();
4827
4828        if ($searchtype eq 'commit' or $searchtype eq 'author' or $searchtype eq 'committer') {
4829                my $greptype;
4830                if ($searchtype eq 'commit') {
4831                        $greptype = "--grep=";
4832                } elsif ($searchtype eq 'author') {
4833                        $greptype = "--author=";
4834                } elsif ($searchtype eq 'committer') {
4835                        $greptype = "--committer=";
4836                }
4837                $greptype .= $search_regexp;
4838                my @commitlist = parse_commits($hash, 101, (100 * $page), $greptype);
4839
4840                my $paging_nav = '';
4841                if ($page > 0) {
4842                        $paging_nav .=
4843                                $cgi->a({-href => href(action=>"search", hash=>$hash,
4844                                                       searchtext=>$searchtext, searchtype=>$searchtype)},
4845                                        "first");
4846                        $paging_nav .= " &sdot; " .
4847                                $cgi->a({-href => href(action=>"search", hash=>$hash,
4848                                                       searchtext=>$searchtext, searchtype=>$searchtype,
4849                                                       page=>$page-1),
4850                                         -accesskey => "p", -title => "Alt-p"}, "prev");
4851                } else {
4852                        $paging_nav .= "first";
4853                        $paging_nav .= " &sdot; prev";
4854                }
4855                if ($#commitlist >= 100) {
4856                        $paging_nav .= " &sdot; " .
4857                                $cgi->a({-href => href(action=>"search", hash=>$hash,
4858                                                       searchtext=>$searchtext, searchtype=>$searchtype,
4859                                                       page=>$page+1),
4860                                         -accesskey => "n", -title => "Alt-n"}, "next");
4861                } else {
4862                        $paging_nav .= " &sdot; next";
4863                }
4864                my $next_link = '';
4865                if ($#commitlist >= 100) {
4866                        $next_link =
4867                                $cgi->a({-href => href(action=>"search", hash=>$hash,
4868                                                       searchtext=>$searchtext, searchtype=>$searchtype,
4869                                                       page=>$page+1),
4870                                         -accesskey => "n", -title => "Alt-n"}, "next");
4871                }
4872
4873                git_print_page_nav('','', $hash,$co{'tree'},$hash, $paging_nav);
4874                git_print_header_div('commit', esc_html($co{'title'}), $hash);
4875                git_search_grep_body(\@commitlist, 0, 99, $next_link);
4876        }
4877
4878        if ($searchtype eq 'pickaxe') {
4879                git_print_page_nav('','', $hash,$co{'tree'},$hash);
4880                git_print_header_div('commit', esc_html($co{'title'}), $hash);
4881
4882                print "<table cellspacing=\"0\">\n";
4883                my $alternate = 1;
4884                $/ = "\n";
4885                my $git_command = git_cmd_str();
4886                my $searchqtext = $searchtext;
4887                $searchqtext =~ s/'/'\\''/;
4888                open my $fd, "-|", "$git_command rev-list $hash | " .
4889                        "$git_command diff-tree -r --stdin -S\'$searchqtext\'";
4890                undef %co;
4891                my @files;
4892                while (my $line = <$fd>) {
4893                        if (%co && $line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)\t(.*)$/) {
4894                                my %set;
4895                                $set{'file'} = $6;
4896                                $set{'from_id'} = $3;
4897                                $set{'to_id'} = $4;
4898                                $set{'id'} = $set{'to_id'};
4899                                if ($set{'id'} =~ m/0{40}/) {
4900                                        $set{'id'} = $set{'from_id'};
4901                                }
4902                                if ($set{'id'} =~ m/0{40}/) {
4903                                        next;
4904                                }
4905                                push @files, \%set;
4906                        } elsif ($line =~ m/^([0-9a-fA-F]{40})$/){
4907                                if (%co) {
4908                                        if ($alternate) {
4909                                                print "<tr class=\"dark\">\n";
4910                                        } else {
4911                                                print "<tr class=\"light\">\n";
4912                                        }
4913                                        $alternate ^= 1;
4914                                        print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
4915                                              "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 5)) . "</i></td>\n" .
4916                                              "<td>" .
4917                                              $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}),
4918                                                      -class => "list subject"},
4919                                                      esc_html(chop_str($co{'title'}, 50)) . "<br/>");
4920                                        while (my $setref = shift @files) {
4921                                                my %set = %$setref;
4922                                                print $cgi->a({-href => href(action=>"blob", hash_base=>$co{'id'},
4923                                                                             hash=>$set{'id'}, file_name=>$set{'file'}),
4924                                                              -class => "list"},
4925                                                              "<span class=\"match\">" . esc_path($set{'file'}) . "</span>") .
4926                                                      "<br/>\n";
4927                                        }
4928                                        print "</td>\n" .
4929                                              "<td class=\"link\">" .
4930                                              $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})}, "commit") .
4931                                              " | " .
4932                                              $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$co{'id'})}, "tree");
4933                                        print "</td>\n" .
4934                                              "</tr>\n";
4935                                }
4936                                %co = parse_commit($1);
4937                        }
4938                }
4939                close $fd;
4940
4941                print "</table>\n";
4942        }
4943
4944        if ($searchtype eq 'grep') {
4945                git_print_page_nav('','', $hash,$co{'tree'},$hash);
4946                git_print_header_div('commit', esc_html($co{'title'}), $hash);
4947
4948                print "<table cellspacing=\"0\">\n";
4949                my $alternate = 1;
4950                my $matches = 0;
4951                $/ = "\n";
4952                open my $fd, "-|", git_cmd(), 'grep', '-n', '-i', '-E', $searchtext, $co{'tree'};
4953                my $lastfile = '';
4954                while (my $line = <$fd>) {
4955                        chomp $line;
4956                        my ($file, $lno, $ltext, $binary);
4957                        last if ($matches++ > 1000);
4958                        if ($line =~ /^Binary file (.+) matches$/) {
4959                                $file = $1;
4960                                $binary = 1;
4961                        } else {
4962                                (undef, $file, $lno, $ltext) = split(/:/, $line, 4);
4963                        }
4964                        if ($file ne $lastfile) {
4965                                $lastfile and print "</td></tr>\n";
4966                                if ($alternate++) {
4967                                        print "<tr class=\"dark\">\n";
4968                                } else {
4969                                        print "<tr class=\"light\">\n";
4970                                }
4971                                print "<td class=\"list\">".
4972                                        $cgi->a({-href => href(action=>"blob", hash=>$co{'hash'},
4973                                                               file_name=>"$file"),
4974                                                -class => "list"}, esc_path($file));
4975                                print "</td><td>\n";
4976                                $lastfile = $file;
4977                        }
4978                        if ($binary) {
4979                                print "<div class=\"binary\">Binary file</div>\n";
4980                        } else {
4981                                $ltext = untabify($ltext);
4982                                if ($ltext =~ m/^(.*)($searchtext)(.*)$/i) {
4983                                        $ltext = esc_html($1, -nbsp=>1);
4984                                        $ltext .= '<span class="match">';
4985                                        $ltext .= esc_html($2, -nbsp=>1);
4986                                        $ltext .= '</span>';
4987                                        $ltext .= esc_html($3, -nbsp=>1);
4988                                } else {
4989                                        $ltext = esc_html($ltext, -nbsp=>1);
4990                                }
4991                                print "<div class=\"pre\">" .
4992                                        $cgi->a({-href => href(action=>"blob", hash=>$co{'hash'},
4993                                                               file_name=>"$file").'#l'.$lno,
4994                                                -class => "linenr"}, sprintf('%4i', $lno))
4995                                        . ' ' .  $ltext . "</div>\n";
4996                        }
4997                }
4998                if ($lastfile) {
4999                        print "</td></tr>\n";
5000                        if ($matches > 1000) {
5001                                print "<div class=\"diff nodifferences\">Too many matches, listing trimmed</div>\n";
5002                        }
5003                } else {
5004                        print "<div class=\"diff nodifferences\">No matches found</div>\n";
5005                }
5006                close $fd;
5007
5008                print "</table>\n";
5009        }
5010        git_footer_html();
5011}
5012
5013sub git_search_help {
5014        git_header_html();
5015        git_print_page_nav('','', $hash,$hash,$hash);
5016        print <<EOT;
5017<dl>
5018<dt><b>commit</b></dt>
5019<dd>The commit messages and authorship information will be scanned for the given string.</dd>
5020EOT
5021        my ($have_grep) = gitweb_check_feature('grep');
5022        if ($have_grep) {
5023                print <<EOT;
5024<dt><b>grep</b></dt>
5025<dd>All files in the currently selected tree (HEAD unless you are explicitly browsing
5026    a different one) are searched for the given
5027<a href="http://en.wikipedia.org/wiki/Regular_expression">regular expression</a>
5028(POSIX extended) and the matches are listed. On large
5029trees, this search can take a while and put some strain on the server, so please use it with
5030some consideration.</dd>
5031EOT
5032        }
5033        print <<EOT;
5034<dt><b>author</b></dt>
5035<dd>Name and e-mail of the change author and date of birth of the patch will be scanned for the given string.</dd>
5036<dt><b>committer</b></dt>
5037<dd>Name and e-mail of the committer and date of commit will be scanned for the given string.</dd>
5038EOT
5039        my ($have_pickaxe) = gitweb_check_feature('pickaxe');
5040        if ($have_pickaxe) {
5041                print <<EOT;
5042<dt><b>pickaxe</b></dt>
5043<dd>All commits that caused the string to appear or disappear from any file (changes that
5044added, removed or "modified" the string) will be listed. This search can take a while and
5045takes a lot of strain on the server, so please use it wisely.</dd>
5046EOT
5047        }
5048        print "</dl>\n";
5049        git_footer_html();
5050}
5051
5052sub git_shortlog {
5053        my $head = git_get_head_hash($project);
5054        if (!defined $hash) {
5055                $hash = $head;
5056        }
5057        if (!defined $page) {
5058                $page = 0;
5059        }
5060        my $refs = git_get_references();
5061
5062        my @commitlist = parse_commits($hash, 101, (100 * $page));
5063
5064        my $paging_nav = format_paging_nav('shortlog', $hash, $head, $page, (100 * ($page+1)));
5065        my $next_link = '';
5066        if ($#commitlist >= 100) {
5067                $next_link =
5068                        $cgi->a({-href => href(action=>"shortlog", hash=>$hash, page=>$page+1),
5069                                 -accesskey => "n", -title => "Alt-n"}, "next");
5070        }
5071
5072        git_header_html();
5073        git_print_page_nav('shortlog','', $hash,$hash,$hash, $paging_nav);
5074        git_print_header_div('summary', $project);
5075
5076        git_shortlog_body(\@commitlist, 0, 99, $refs, $next_link);
5077
5078        git_footer_html();
5079}
5080
5081## ......................................................................
5082## feeds (RSS, Atom; OPML)
5083
5084sub git_feed {
5085        my $format = shift || 'atom';
5086        my ($have_blame) = gitweb_check_feature('blame');
5087
5088        # Atom: http://www.atomenabled.org/developers/syndication/
5089        # RSS:  http://www.notestips.com/80256B3A007F2692/1/NAMO5P9UPQ
5090        if ($format ne 'rss' && $format ne 'atom') {
5091                die_error(undef, "Unknown web feed format");
5092        }
5093
5094        # log/feed of current (HEAD) branch, log of given branch, history of file/directory
5095        my $head = $hash || 'HEAD';
5096        my @commitlist = parse_commits($head, 150);
5097
5098        my %latest_commit;
5099        my %latest_date;
5100        my $content_type = "application/$format+xml";
5101        if (defined $cgi->http('HTTP_ACCEPT') &&
5102                 $cgi->Accept('text/xml') > $cgi->Accept($content_type)) {
5103                # browser (feed reader) prefers text/xml
5104                $content_type = 'text/xml';
5105        }
5106        if (defined($commitlist[0])) {
5107                %latest_commit = %{$commitlist[0]};
5108                %latest_date   = parse_date($latest_commit{'author_epoch'});
5109                print $cgi->header(
5110                        -type => $content_type,
5111                        -charset => 'utf-8',
5112                        -last_modified => $latest_date{'rfc2822'});
5113        } else {
5114                print $cgi->header(
5115                        -type => $content_type,
5116                        -charset => 'utf-8');
5117        }
5118
5119        # Optimization: skip generating the body if client asks only
5120        # for Last-Modified date.
5121        return if ($cgi->request_method() eq 'HEAD');
5122
5123        # header variables
5124        my $title = "$site_name - $project/$action";
5125        my $feed_type = 'log';
5126        if (defined $hash) {
5127                $title .= " - '$hash'";
5128                $feed_type = 'branch log';
5129                if (defined $file_name) {
5130                        $title .= " :: $file_name";
5131                        $feed_type = 'history';
5132                }
5133        } elsif (defined $file_name) {
5134                $title .= " - $file_name";
5135                $feed_type = 'history';
5136        }
5137        $title .= " $feed_type";
5138        my $descr = git_get_project_description($project);
5139        if (defined $descr) {
5140                $descr = esc_html($descr);
5141        } else {
5142                $descr = "$project " .
5143                         ($format eq 'rss' ? 'RSS' : 'Atom') .
5144                         " feed";
5145        }
5146        my $owner = git_get_project_owner($project);
5147        $owner = esc_html($owner);
5148
5149        #header
5150        my $alt_url;
5151        if (defined $file_name) {
5152                $alt_url = href(-full=>1, action=>"history", hash=>$hash, file_name=>$file_name);
5153        } elsif (defined $hash) {
5154                $alt_url = href(-full=>1, action=>"log", hash=>$hash);
5155        } else {
5156                $alt_url = href(-full=>1, action=>"summary");
5157        }
5158        print qq!<?xml version="1.0" encoding="utf-8"?>\n!;
5159        if ($format eq 'rss') {
5160                print <<XML;
5161<rss version="2.0" xmlns:content="http://purl.org/rss/1.0/modules/content/">
5162<channel>
5163XML
5164                print "<title>$title</title>\n" .
5165                      "<link>$alt_url</link>\n" .
5166                      "<description>$descr</description>\n" .
5167                      "<language>en</language>\n";
5168        } elsif ($format eq 'atom') {
5169                print <<XML;
5170<feed xmlns="http://www.w3.org/2005/Atom">
5171XML
5172                print "<title>$title</title>\n" .
5173                      "<subtitle>$descr</subtitle>\n" .
5174                      '<link rel="alternate" type="text/html" href="' .
5175                      $alt_url . '" />' . "\n" .
5176                      '<link rel="self" type="' . $content_type . '" href="' .
5177                      $cgi->self_url() . '" />' . "\n" .
5178                      "<id>" . href(-full=>1) . "</id>\n" .
5179                      # use project owner for feed author
5180                      "<author><name>$owner</name></author>\n";
5181                if (defined $favicon) {
5182                        print "<icon>" . esc_url($favicon) . "</icon>\n";
5183                }
5184                if (defined $logo_url) {
5185                        # not twice as wide as tall: 72 x 27 pixels
5186                        print "<logo>" . esc_url($logo) . "</logo>\n";
5187                }
5188                if (! %latest_date) {
5189                        # dummy date to keep the feed valid until commits trickle in:
5190                        print "<updated>1970-01-01T00:00:00Z</updated>\n";
5191                } else {
5192                        print "<updated>$latest_date{'iso-8601'}</updated>\n";
5193                }
5194        }
5195
5196        # contents
5197        for (my $i = 0; $i <= $#commitlist; $i++) {
5198                my %co = %{$commitlist[$i]};
5199                my $commit = $co{'id'};
5200                # we read 150, we always show 30 and the ones more recent than 48 hours
5201                if (($i >= 20) && ((time - $co{'author_epoch'}) > 48*60*60)) {
5202                        last;
5203                }
5204                my %cd = parse_date($co{'author_epoch'});
5205
5206                # get list of changed files
5207                open my $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
5208                        $co{'parent'} || "--root",
5209                        $co{'id'}, "--", (defined $file_name ? $file_name : ())
5210                        or next;
5211                my @difftree = map { chomp; $_ } <$fd>;
5212                close $fd
5213                        or next;
5214
5215                # print element (entry, item)
5216                my $co_url = href(-full=>1, action=>"commit", hash=>$commit);
5217                if ($format eq 'rss') {
5218                        print "<item>\n" .
5219                              "<title>" . esc_html($co{'title'}) . "</title>\n" .
5220                              "<author>" . esc_html($co{'author'}) . "</author>\n" .
5221                              "<pubDate>$cd{'rfc2822'}</pubDate>\n" .
5222                              "<guid isPermaLink=\"true\">$co_url</guid>\n" .
5223                              "<link>$co_url</link>\n" .
5224                              "<description>" . esc_html($co{'title'}) . "</description>\n" .
5225                              "<content:encoded>" .
5226                              "<![CDATA[\n";
5227                } elsif ($format eq 'atom') {
5228                        print "<entry>\n" .
5229                              "<title type=\"html\">" . esc_html($co{'title'}) . "</title>\n" .
5230                              "<updated>$cd{'iso-8601'}</updated>\n" .
5231                              "<author>\n" .
5232                              "  <name>" . esc_html($co{'author_name'}) . "</name>\n";
5233                        if ($co{'author_email'}) {
5234                                print "  <email>" . esc_html($co{'author_email'}) . "</email>\n";
5235                        }
5236                        print "</author>\n" .
5237                              # use committer for contributor
5238                              "<contributor>\n" .
5239                              "  <name>" . esc_html($co{'committer_name'}) . "</name>\n";
5240                        if ($co{'committer_email'}) {
5241                                print "  <email>" . esc_html($co{'committer_email'}) . "</email>\n";
5242                        }
5243                        print "</contributor>\n" .
5244                              "<published>$cd{'iso-8601'}</published>\n" .
5245                              "<link rel=\"alternate\" type=\"text/html\" href=\"$co_url\" />\n" .
5246                              "<id>$co_url</id>\n" .
5247                              "<content type=\"xhtml\" xml:base=\"" . esc_url($my_url) . "\">\n" .
5248                              "<div xmlns=\"http://www.w3.org/1999/xhtml\">\n";
5249                }
5250                my $comment = $co{'comment'};
5251                print "<pre>\n";
5252                foreach my $line (@$comment) {
5253                        $line = esc_html($line);
5254                        print "$line\n";
5255                }
5256                print "</pre><ul>\n";
5257                foreach my $difftree_line (@difftree) {
5258                        my %difftree = parse_difftree_raw_line($difftree_line);
5259                        next if !$difftree{'from_id'};
5260
5261                        my $file = $difftree{'file'} || $difftree{'to_file'};
5262
5263                        print "<li>" .
5264                              "[" .
5265                              $cgi->a({-href => href(-full=>1, action=>"blobdiff",
5266                                                     hash=>$difftree{'to_id'}, hash_parent=>$difftree{'from_id'},
5267                                                     hash_base=>$co{'id'}, hash_parent_base=>$co{'parent'},
5268                                                     file_name=>$file, file_parent=>$difftree{'from_file'}),
5269                                      -title => "diff"}, 'D');
5270                        if ($have_blame) {
5271                                print $cgi->a({-href => href(-full=>1, action=>"blame",
5272                                                             file_name=>$file, hash_base=>$commit),
5273                                              -title => "blame"}, 'B');
5274                        }
5275                        # if this is not a feed of a file history
5276                        if (!defined $file_name || $file_name ne $file) {
5277                                print $cgi->a({-href => href(-full=>1, action=>"history",
5278                                                             file_name=>$file, hash=>$commit),
5279                                              -title => "history"}, 'H');
5280                        }
5281                        $file = esc_path($file);
5282                        print "] ".
5283                              "$file</li>\n";
5284                }
5285                if ($format eq 'rss') {
5286                        print "</ul>]]>\n" .
5287                              "</content:encoded>\n" .
5288                              "</item>\n";
5289                } elsif ($format eq 'atom') {
5290                        print "</ul>\n</div>\n" .
5291                              "</content>\n" .
5292                              "</entry>\n";
5293                }
5294        }
5295
5296        # end of feed
5297        if ($format eq 'rss') {
5298                print "</channel>\n</rss>\n";
5299        }       elsif ($format eq 'atom') {
5300                print "</feed>\n";
5301        }
5302}
5303
5304sub git_rss {
5305        git_feed('rss');
5306}
5307
5308sub git_atom {
5309        git_feed('atom');
5310}
5311
5312sub git_opml {
5313        my @list = git_get_projects_list();
5314
5315        print $cgi->header(-type => 'text/xml', -charset => 'utf-8');
5316        print <<XML;
5317<?xml version="1.0" encoding="utf-8"?>
5318<opml version="1.0">
5319<head>
5320  <title>$site_name OPML Export</title>
5321</head>
5322<body>
5323<outline text="git RSS feeds">
5324XML
5325
5326        foreach my $pr (@list) {
5327                my %proj = %$pr;
5328                my $head = git_get_head_hash($proj{'path'});
5329                if (!defined $head) {
5330                        next;
5331                }
5332                $git_dir = "$projectroot/$proj{'path'}";
5333                my %co = parse_commit($head);
5334                if (!%co) {
5335                        next;
5336                }
5337
5338                my $path = esc_html(chop_str($proj{'path'}, 25, 5));
5339                my $rss  = "$my_url?p=$proj{'path'};a=rss";
5340                my $html = "$my_url?p=$proj{'path'};a=summary";
5341                print "<outline type=\"rss\" text=\"$path\" title=\"$path\" xmlUrl=\"$rss\" htmlUrl=\"$html\"/>\n";
5342        }
5343        print <<XML;
5344</outline>
5345</body>
5346</opml>
5347XML
5348}