Andrew's git - gitweb.git/blob - gitweb/gitweb.perl

   1#!/usr/bin/perl
   2
   3# gitweb - simple web interface to track changes in git repositories
   4#
   5# (C) 2005-2006, Kay Sievers <kay.sievers@vrfy.org>
   6# (C) 2005, Christian Gierke
   7#
   8# This program is licensed under the GPLv2
   9
  10use strict;
  11use warnings;
  12use CGI qw(:standard :escapeHTML -nosticky);
  13use CGI::Util qw(unescape);
  14use CGI::Carp qw(fatalsToBrowser);
  15use Encode;
  16use Fcntl ':mode';
  17use File::Find qw();
  18use File::Basename qw(basename);
  19binmode STDOUT, ':utf8';
  20
  21BEGIN {
  22        CGI->compile() if $ENV{'MOD_PERL'};
  23}
  24
  25our $cgi = new CGI;
  26our $version = "++GIT_VERSION++";
  27our $my_url = $cgi->url();
  28our $my_uri = $cgi->url(-absolute => 1);
  29
  30# core git executable to use
  31# this can just be "git" if your webserver has a sensible PATH
  32our $GIT = "++GIT_BINDIR++/git";
  33
  34# absolute fs-path which will be prepended to the project path
  35#our $projectroot = "/pub/scm";
  36our $projectroot = "++GITWEB_PROJECTROOT++";
  37
  38# target of the home link on top of all pages
  39our $home_link = $my_uri || "/";
  40
  41# string of the home link on top of all pages
  42our $home_link_str = "++GITWEB_HOME_LINK_STR++";
  43
  44# name of your site or organization to appear in page titles
  45# replace this with something more descriptive for clearer bookmarks
  46our $site_name = "++GITWEB_SITENAME++"
  47                 || ($ENV{'SERVER_NAME'} || "Untitled") . " Git";
  48
  49# filename of html text to include at top of each page
  50our $site_header = "++GITWEB_SITE_HEADER++";
  51# html text to include at home page
  52our $home_text = "++GITWEB_HOMETEXT++";
  53# filename of html text to include at bottom of each page
  54our $site_footer = "++GITWEB_SITE_FOOTER++";
  55
  56# URI of stylesheets
  57our @stylesheets = ("++GITWEB_CSS++");
  58# URI of a single stylesheet, which can be overridden in GITWEB_CONFIG.
  59our $stylesheet = undef;
  60# URI of GIT logo (72x27 size)
  61our $logo = "++GITWEB_LOGO++";
  62# URI of GIT favicon, assumed to be image/png type
  63our $favicon = "++GITWEB_FAVICON++";
  64
  65# URI and label (title) of GIT logo link
  66#our $logo_url = "http://www.kernel.org/pub/software/scm/git/docs/";
  67#our $logo_label = "git documentation";
  68our $logo_url = "http://git.or.cz/";
  69our $logo_label = "git homepage";
  70
  71# source of projects list
  72our $projects_list = "++GITWEB_LIST++";
  73
  74# default order of projects list
  75# valid values are none, project, descr, owner, and age
  76our $default_projects_order = "project";
  77
  78# show repository only if this file exists
  79# (only effective if this variable evaluates to true)
  80our $export_ok = "++GITWEB_EXPORT_OK++";
  81
  82# only allow viewing of repositories also shown on the overview page
  83our $strict_export = "++GITWEB_STRICT_EXPORT++";
  84
  85# list of git base URLs used for URL to where fetch project from,
  86# i.e. full URL is "$git_base_url/$project"
  87our @git_base_url_list = grep { $_ ne '' } ("++GITWEB_BASE_URL++");
  88
  89# default blob_plain mimetype and default charset for text/plain blob
  90our $default_blob_plain_mimetype = 'text/plain';
  91our $default_text_plain_charset  = undef;
  92
  93# file to use for guessing MIME types before trying /etc/mime.types
  94# (relative to the current git repository)
  95our $mimetypes_file = undef;
  96
  97# 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, @parents) = @_;
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                                        $cgi->a({-href=>href(action=>"blobdiff",
1088                                                             hash_parent=>$diffinfo->{'from_id'}[$i],
1089                                                             hash_parent_base=>$parents[$i],
1090                                                             file_parent=>$from->{'file'}[$i],
1091                                                             hash=>$diffinfo->{'to_id'},
1092                                                             hash_base=>$hash,
1093                                                             file_name=>$to->{'file'}),
1094                                                 -class=>"path",
1095                                                 -title=>"diff" . ($i+1)},
1096                                                $i+1) .
1097                                        '/' .
1098                                        $cgi->a({-href=>$from->{'href'}[$i], -class=>"path"},
1099                                                esc_path($from->{'file'}[$i]));
1100                        } else {
1101                                $line = '--- /dev/null';
1102                        }
1103                        $result .= qq!<div class="diff from_file">$line</div>\n!;
1104                }
1105        }
1106
1107        $line = $to_line;
1108        #assert($line =~ m/^\+\+\+/) if DEBUG;
1109        # no extra formatting for "^+++ /dev/null"
1110        if ($line =~ m!^\+\+\+ "?b/!) {
1111                if ($to->{'href'}) {
1112                        $line = '+++ b/' .
1113                                $cgi->a({-href=>$to->{'href'}, -class=>"path"},
1114                                        esc_path($to->{'file'}));
1115                } else {
1116                        $line = '+++ b/' .
1117                                esc_path($to->{'file'});
1118                }
1119        }
1120        $result .= qq!<div class="diff to_file">$line</div>\n!;
1121
1122        return $result;
1123}
1124
1125# create note for patch simplified by combined diff
1126sub format_diff_cc_simplified {
1127        my ($diffinfo, @parents) = @_;
1128        my $result = '';
1129
1130        $result .= "<div class=\"diff header\">" .
1131                   "diff --cc ";
1132        if (!is_deleted($diffinfo)) {
1133                $result .= $cgi->a({-href => href(action=>"blob",
1134                                                  hash_base=>$hash,
1135                                                  hash=>$diffinfo->{'to_id'},
1136                                                  file_name=>$diffinfo->{'to_file'}),
1137                                    -class => "path"},
1138                                   esc_path($diffinfo->{'to_file'}));
1139        } else {
1140                $result .= esc_path($diffinfo->{'to_file'});
1141        }
1142        $result .= "</div>\n" . # class="diff header"
1143                   "<div class=\"diff nodifferences\">" .
1144                   "Simple merge" .
1145                   "</div>\n"; # class="diff nodifferences"
1146
1147        return $result;
1148}
1149
1150# format patch (diff) line (not to be used for diff headers)
1151sub format_diff_line {
1152        my $line = shift;
1153        my ($from, $to) = @_;
1154        my $diff_class = "";
1155
1156        chomp $line;
1157
1158        if ($from && $to && ref($from->{'href'}) eq "ARRAY") {
1159                # combined diff
1160                my $prefix = substr($line, 0, scalar @{$from->{'href'}});
1161                if ($line =~ m/^\@{3}/) {
1162                        $diff_class = " chunk_header";
1163                } elsif ($line =~ m/^\\/) {
1164                        $diff_class = " incomplete";
1165                } elsif ($prefix =~ tr/+/+/) {
1166                        $diff_class = " add";
1167                } elsif ($prefix =~ tr/-/-/) {
1168                        $diff_class = " rem";
1169                }
1170        } else {
1171                # assume ordinary diff
1172                my $char = substr($line, 0, 1);
1173                if ($char eq '+') {
1174                        $diff_class = " add";
1175                } elsif ($char eq '-') {
1176                        $diff_class = " rem";
1177                } elsif ($char eq '@') {
1178                        $diff_class = " chunk_header";
1179                } elsif ($char eq "\\") {
1180                        $diff_class = " incomplete";
1181                }
1182        }
1183        $line = untabify($line);
1184        if ($from && $to && $line =~ m/^\@{2} /) {
1185                my ($from_text, $from_start, $from_lines, $to_text, $to_start, $to_lines, $section) =
1186                        $line =~ m/^\@{2} (-(\d+)(?:,(\d+))?) (\+(\d+)(?:,(\d+))?) \@{2}(.*)$/;
1187
1188                $from_lines = 0 unless defined $from_lines;
1189                $to_lines   = 0 unless defined $to_lines;
1190
1191                if ($from->{'href'}) {
1192                        $from_text = $cgi->a({-href=>"$from->{'href'}#l$from_start",
1193                                             -class=>"list"}, $from_text);
1194                }
1195                if ($to->{'href'}) {
1196                        $to_text   = $cgi->a({-href=>"$to->{'href'}#l$to_start",
1197                                             -class=>"list"}, $to_text);
1198                }
1199                $line = "<span class=\"chunk_info\">@@ $from_text $to_text @@</span>" .
1200                        "<span class=\"section\">" . esc_html($section, -nbsp=>1) . "</span>";
1201                return "<div class=\"diff$diff_class\">$line</div>\n";
1202        } elsif ($from && $to && $line =~ m/^\@{3}/) {
1203                my ($prefix, $ranges, $section) = $line =~ m/^(\@+) (.*?) \@+(.*)$/;
1204                my (@from_text, @from_start, @from_nlines, $to_text, $to_start, $to_nlines);
1205
1206                @from_text = split(' ', $ranges);
1207                for (my $i = 0; $i < @from_text; ++$i) {
1208                        ($from_start[$i], $from_nlines[$i]) =
1209                                (split(',', substr($from_text[$i], 1)), 0);
1210                }
1211
1212                $to_text   = pop @from_text;
1213                $to_start  = pop @from_start;
1214                $to_nlines = pop @from_nlines;
1215
1216                $line = "<span class=\"chunk_info\">$prefix ";
1217                for (my $i = 0; $i < @from_text; ++$i) {
1218                        if ($from->{'href'}[$i]) {
1219                                $line .= $cgi->a({-href=>"$from->{'href'}[$i]#l$from_start[$i]",
1220                                                  -class=>"list"}, $from_text[$i]);
1221                        } else {
1222                                $line .= $from_text[$i];
1223                        }
1224                        $line .= " ";
1225                }
1226                if ($to->{'href'}) {
1227                        $line .= $cgi->a({-href=>"$to->{'href'}#l$to_start",
1228                                          -class=>"list"}, $to_text);
1229                } else {
1230                        $line .= $to_text;
1231                }
1232                $line .= " $prefix</span>" .
1233                         "<span class=\"section\">" . esc_html($section, -nbsp=>1) . "</span>";
1234                return "<div class=\"diff$diff_class\">$line</div>\n";
1235        }
1236        return "<div class=\"diff$diff_class\">" . esc_html($line, -nbsp=>1) . "</div>\n";
1237}
1238
1239## ----------------------------------------------------------------------
1240## git utility subroutines, invoking git commands
1241
1242# returns path to the core git executable and the --git-dir parameter as list
1243sub git_cmd {
1244        return $GIT, '--git-dir='.$git_dir;
1245}
1246
1247# returns path to the core git executable and the --git-dir parameter as string
1248sub git_cmd_str {
1249        return join(' ', git_cmd());
1250}
1251
1252# get HEAD ref of given project as hash
1253sub git_get_head_hash {
1254        my $project = shift;
1255        my $o_git_dir = $git_dir;
1256        my $retval = undef;
1257        $git_dir = "$projectroot/$project";
1258        if (open my $fd, "-|", git_cmd(), "rev-parse", "--verify", "HEAD") {
1259                my $head = <$fd>;
1260                close $fd;
1261                if (defined $head && $head =~ /^([0-9a-fA-F]{40})$/) {
1262                        $retval = $1;
1263                }
1264        }
1265        if (defined $o_git_dir) {
1266                $git_dir = $o_git_dir;
1267        }
1268        return $retval;
1269}
1270
1271# get type of given object
1272sub git_get_type {
1273        my $hash = shift;
1274
1275        open my $fd, "-|", git_cmd(), "cat-file", '-t', $hash or return;
1276        my $type = <$fd>;
1277        close $fd or return;
1278        chomp $type;
1279        return $type;
1280}
1281
1282sub git_get_project_config {
1283        my ($key, $type) = @_;
1284
1285        return unless ($key);
1286        $key =~ s/^gitweb\.//;
1287        return if ($key =~ m/\W/);
1288
1289        my @x = (git_cmd(), 'config');
1290        if (defined $type) { push @x, $type; }
1291        push @x, "--get";
1292        push @x, "gitweb.$key";
1293        my $val = qx(@x);
1294        chomp $val;
1295        return ($val);
1296}
1297
1298# get hash of given path at given ref
1299sub git_get_hash_by_path {
1300        my $base = shift;
1301        my $path = shift || return undef;
1302        my $type = shift;
1303
1304        $path =~ s,/+$,,;
1305
1306        open my $fd, "-|", git_cmd(), "ls-tree", $base, "--", $path
1307                or die_error(undef, "Open git-ls-tree failed");
1308        my $line = <$fd>;
1309        close $fd or return undef;
1310
1311        if (!defined $line) {
1312                # there is no tree or hash given by $path at $base
1313                return undef;
1314        }
1315
1316        #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
1317        $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t/;
1318        if (defined $type && $type ne $2) {
1319                # type doesn't match
1320                return undef;
1321        }
1322        return $3;
1323}
1324
1325# get path of entry with given hash at given tree-ish (ref)
1326# used to get 'from' filename for combined diff (merge commit) for renames
1327sub git_get_path_by_hash {
1328        my $base = shift || return;
1329        my $hash = shift || return;
1330
1331        local $/ = "\0";
1332
1333        open my $fd, "-|", git_cmd(), "ls-tree", '-r', '-t', '-z', $base
1334                or return undef;
1335        while (my $line = <$fd>) {
1336                chomp $line;
1337
1338                #'040000 tree 595596a6a9117ddba9fe379b6b012b558bac8423  gitweb'
1339                #'100644 blob e02e90f0429be0d2a69b76571101f20b8f75530f  gitweb/README'
1340                if ($line =~ m/(?:[0-9]+) (?:.+) $hash\t(.+)$/) {
1341                        close $fd;
1342                        return $1;
1343                }
1344        }
1345        close $fd;
1346        return undef;
1347}
1348
1349## ......................................................................
1350## git utility functions, directly accessing git repository
1351
1352sub git_get_project_description {
1353        my $path = shift;
1354
1355        open my $fd, "$projectroot/$path/description" or return undef;
1356        my $descr = <$fd>;
1357        close $fd;
1358        if (defined $descr) {
1359                chomp $descr;
1360        }
1361        return $descr;
1362}
1363
1364sub git_get_project_url_list {
1365        my $path = shift;
1366
1367        open my $fd, "$projectroot/$path/cloneurl" or return;
1368        my @git_project_url_list = map { chomp; $_ } <$fd>;
1369        close $fd;
1370
1371        return wantarray ? @git_project_url_list : \@git_project_url_list;
1372}
1373
1374sub git_get_projects_list {
1375        my ($filter) = @_;
1376        my @list;
1377
1378        $filter ||= '';
1379        $filter =~ s/\.git$//;
1380
1381        my ($check_forks) = gitweb_check_feature('forks');
1382
1383        if (-d $projects_list) {
1384                # search in directory
1385                my $dir = $projects_list . ($filter ? "/$filter" : '');
1386                # remove the trailing "/"
1387                $dir =~ s!/+$!!;
1388                my $pfxlen = length("$dir");
1389
1390                File::Find::find({
1391                        follow_fast => 1, # follow symbolic links
1392                        dangling_symlinks => 0, # ignore dangling symlinks, silently
1393                        wanted => sub {
1394                                # skip project-list toplevel, if we get it.
1395                                return if (m!^[/.]$!);
1396                                # only directories can be git repositories
1397                                return unless (-d $_);
1398
1399                                my $subdir = substr($File::Find::name, $pfxlen + 1);
1400                                # we check related file in $projectroot
1401                                if ($check_forks and $subdir =~ m#/.#) {
1402                                        $File::Find::prune = 1;
1403                                } elsif (check_export_ok("$projectroot/$filter/$subdir")) {
1404                                        push @list, { path => ($filter ? "$filter/" : '') . $subdir };
1405                                        $File::Find::prune = 1;
1406                                }
1407                        },
1408                }, "$dir");
1409
1410        } elsif (-f $projects_list) {
1411                # read from file(url-encoded):
1412                # 'git%2Fgit.git Linus+Torvalds'
1413                # 'libs%2Fklibc%2Fklibc.git H.+Peter+Anvin'
1414                # 'linux%2Fhotplug%2Fudev.git Greg+Kroah-Hartman'
1415                my %paths;
1416                open my ($fd), $projects_list or return;
1417        PROJECT:
1418                while (my $line = <$fd>) {
1419                        chomp $line;
1420                        my ($path, $owner) = split ' ', $line;
1421                        $path = unescape($path);
1422                        $owner = unescape($owner);
1423                        if (!defined $path) {
1424                                next;
1425                        }
1426                        if ($filter ne '') {
1427                                # looking for forks;
1428                                my $pfx = substr($path, 0, length($filter));
1429                                if ($pfx ne $filter) {
1430                                        next PROJECT;
1431                                }
1432                                my $sfx = substr($path, length($filter));
1433                                if ($sfx !~ /^\/.*\.git$/) {
1434                                        next PROJECT;
1435                                }
1436                        } elsif ($check_forks) {
1437                        PATH:
1438                                foreach my $filter (keys %paths) {
1439                                        # looking for forks;
1440                                        my $pfx = substr($path, 0, length($filter));
1441                                        if ($pfx ne $filter) {
1442                                                next PATH;
1443                                        }
1444                                        my $sfx = substr($path, length($filter));
1445                                        if ($sfx !~ /^\/.*\.git$/) {
1446                                                next PATH;
1447                                        }
1448                                        # is a fork, don't include it in
1449                                        # the list
1450                                        next PROJECT;
1451                                }
1452                        }
1453                        if (check_export_ok("$projectroot/$path")) {
1454                                my $pr = {
1455                                        path => $path,
1456                                        owner => to_utf8($owner),
1457                                };
1458                                push @list, $pr;
1459                                (my $forks_path = $path) =~ s/\.git$//;
1460                                $paths{$forks_path}++;
1461                        }
1462                }
1463                close $fd;
1464        }
1465        return @list;
1466}
1467
1468sub git_get_project_owner {
1469        my $project = shift;
1470        my $owner;
1471
1472        return undef unless $project;
1473
1474        # read from file (url-encoded):
1475        # 'git%2Fgit.git Linus+Torvalds'
1476        # 'libs%2Fklibc%2Fklibc.git H.+Peter+Anvin'
1477        # 'linux%2Fhotplug%2Fudev.git Greg+Kroah-Hartman'
1478        if (-f $projects_list) {
1479                open (my $fd , $projects_list);
1480                while (my $line = <$fd>) {
1481                        chomp $line;
1482                        my ($pr, $ow) = split ' ', $line;
1483                        $pr = unescape($pr);
1484                        $ow = unescape($ow);
1485                        if ($pr eq $project) {
1486                                $owner = to_utf8($ow);
1487                                last;
1488                        }
1489                }
1490                close $fd;
1491        }
1492        if (!defined $owner) {
1493                $owner = get_file_owner("$projectroot/$project");
1494        }
1495
1496        return $owner;
1497}
1498
1499sub git_get_last_activity {
1500        my ($path) = @_;
1501        my $fd;
1502
1503        $git_dir = "$projectroot/$path";
1504        open($fd, "-|", git_cmd(), 'for-each-ref',
1505             '--format=%(committer)',
1506             '--sort=-committerdate',
1507             '--count=1',
1508             'refs/heads') or return;
1509        my $most_recent = <$fd>;
1510        close $fd or return;
1511        if (defined $most_recent &&
1512            $most_recent =~ / (\d+) [-+][01]\d\d\d$/) {
1513                my $timestamp = $1;
1514                my $age = time - $timestamp;
1515                return ($age, age_string($age));
1516        }
1517}
1518
1519sub git_get_references {
1520        my $type = shift || "";
1521        my %refs;
1522        # 5dc01c595e6c6ec9ccda4f6f69c131c0dd945f8c refs/tags/v2.6.11
1523        # c39ae07f393806ccf406ef966e9a15afc43cc36a refs/tags/v2.6.11^{}
1524        open my $fd, "-|", git_cmd(), "show-ref", "--dereference",
1525                ($type ? ("--", "refs/$type") : ()) # use -- <pattern> if $type
1526                or return;
1527
1528        while (my $line = <$fd>) {
1529                chomp $line;
1530                if ($line =~ m!^([0-9a-fA-F]{40})\srefs/($type/?[^^]+)!) {
1531                        if (defined $refs{$1}) {
1532                                push @{$refs{$1}}, $2;
1533                        } else {
1534                                $refs{$1} = [ $2 ];
1535                        }
1536                }
1537        }
1538        close $fd or return;
1539        return \%refs;
1540}
1541
1542sub git_get_rev_name_tags {
1543        my $hash = shift || return undef;
1544
1545        open my $fd, "-|", git_cmd(), "name-rev", "--tags", $hash
1546                or return;
1547        my $name_rev = <$fd>;
1548        close $fd;
1549
1550        if ($name_rev =~ m|^$hash tags/(.*)$|) {
1551                return $1;
1552        } else {
1553                # catches also '$hash undefined' output
1554                return undef;
1555        }
1556}
1557
1558## ----------------------------------------------------------------------
1559## parse to hash functions
1560
1561sub parse_date {
1562        my $epoch = shift;
1563        my $tz = shift || "-0000";
1564
1565        my %date;
1566        my @months = ("Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec");
1567        my @days = ("Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat");
1568        my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($epoch);
1569        $date{'hour'} = $hour;
1570        $date{'minute'} = $min;
1571        $date{'mday'} = $mday;
1572        $date{'day'} = $days[$wday];
1573        $date{'month'} = $months[$mon];
1574        $date{'rfc2822'}   = sprintf "%s, %d %s %4d %02d:%02d:%02d +0000",
1575                             $days[$wday], $mday, $months[$mon], 1900+$year, $hour ,$min, $sec;
1576        $date{'mday-time'} = sprintf "%d %s %02d:%02d",
1577                             $mday, $months[$mon], $hour ,$min;
1578        $date{'iso-8601'}  = sprintf "%04d-%02d-%02dT%02d:%02d:%02dZ",
1579                             1900+$year, $mon, $mday, $hour ,$min, $sec;
1580
1581        $tz =~ m/^([+\-][0-9][0-9])([0-9][0-9])$/;
1582        my $local = $epoch + ((int $1 + ($2/60)) * 3600);
1583        ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($local);
1584        $date{'hour_local'} = $hour;
1585        $date{'minute_local'} = $min;
1586        $date{'tz_local'} = $tz;
1587        $date{'iso-tz'} = sprintf("%04d-%02d-%02d %02d:%02d:%02d %s",
1588                                  1900+$year, $mon+1, $mday,
1589                                  $hour, $min, $sec, $tz);
1590        return %date;
1591}
1592
1593sub parse_tag {
1594        my $tag_id = shift;
1595        my %tag;
1596        my @comment;
1597
1598        open my $fd, "-|", git_cmd(), "cat-file", "tag", $tag_id or return;
1599        $tag{'id'} = $tag_id;
1600        while (my $line = <$fd>) {
1601                chomp $line;
1602                if ($line =~ m/^object ([0-9a-fA-F]{40})$/) {
1603                        $tag{'object'} = $1;
1604                } elsif ($line =~ m/^type (.+)$/) {
1605                        $tag{'type'} = $1;
1606                } elsif ($line =~ m/^tag (.+)$/) {
1607                        $tag{'name'} = $1;
1608                } elsif ($line =~ m/^tagger (.*) ([0-9]+) (.*)$/) {
1609                        $tag{'author'} = $1;
1610                        $tag{'epoch'} = $2;
1611                        $tag{'tz'} = $3;
1612                } elsif ($line =~ m/--BEGIN/) {
1613                        push @comment, $line;
1614                        last;
1615                } elsif ($line eq "") {
1616                        last;
1617                }
1618        }
1619        push @comment, <$fd>;
1620        $tag{'comment'} = \@comment;
1621        close $fd or return;
1622        if (!defined $tag{'name'}) {
1623                return
1624        };
1625        return %tag
1626}
1627
1628sub parse_commit_text {
1629        my ($commit_text, $withparents) = @_;
1630        my @commit_lines = split '\n', $commit_text;
1631        my %co;
1632
1633        pop @commit_lines; # Remove '\0'
1634
1635        if (! @commit_lines) {
1636                return;
1637        }
1638
1639        my $header = shift @commit_lines;
1640        if ($header !~ m/^[0-9a-fA-F]{40}/) {
1641                return;
1642        }
1643        ($co{'id'}, my @parents) = split ' ', $header;
1644        while (my $line = shift @commit_lines) {
1645                last if $line eq "\n";
1646                if ($line =~ m/^tree ([0-9a-fA-F]{40})$/) {
1647                        $co{'tree'} = $1;
1648                } elsif ((!defined $withparents) && ($line =~ m/^parent ([0-9a-fA-F]{40})$/)) {
1649                        push @parents, $1;
1650                } elsif ($line =~ m/^author (.*) ([0-9]+) (.*)$/) {
1651                        $co{'author'} = $1;
1652                        $co{'author_epoch'} = $2;
1653                        $co{'author_tz'} = $3;
1654                        if ($co{'author'} =~ m/^([^<]+) <([^>]*)>/) {
1655                                $co{'author_name'}  = $1;
1656                                $co{'author_email'} = $2;
1657                        } else {
1658                                $co{'author_name'} = $co{'author'};
1659                        }
1660                } elsif ($line =~ m/^committer (.*) ([0-9]+) (.*)$/) {
1661                        $co{'committer'} = $1;
1662                        $co{'committer_epoch'} = $2;
1663                        $co{'committer_tz'} = $3;
1664                        $co{'committer_name'} = $co{'committer'};
1665                        if ($co{'committer'} =~ m/^([^<]+) <([^>]*)>/) {
1666                                $co{'committer_name'}  = $1;
1667                                $co{'committer_email'} = $2;
1668                        } else {
1669                                $co{'committer_name'} = $co{'committer'};
1670                        }
1671                }
1672        }
1673        if (!defined $co{'tree'}) {
1674                return;
1675        };
1676        $co{'parents'} = \@parents;
1677        $co{'parent'} = $parents[0];
1678
1679        foreach my $title (@commit_lines) {
1680                $title =~ s/^    //;
1681                if ($title ne "") {
1682                        $co{'title'} = chop_str($title, 80, 5);
1683                        # remove leading stuff of merges to make the interesting part visible
1684                        if (length($title) > 50) {
1685                                $title =~ s/^Automatic //;
1686                                $title =~ s/^merge (of|with) /Merge ... /i;
1687                                if (length($title) > 50) {
1688                                        $title =~ s/(http|rsync):\/\///;
1689                                }
1690                                if (length($title) > 50) {
1691                                        $title =~ s/(master|www|rsync)\.//;
1692                                }
1693                                if (length($title) > 50) {
1694                                        $title =~ s/kernel.org:?//;
1695                                }
1696                                if (length($title) > 50) {
1697                                        $title =~ s/\/pub\/scm//;
1698                                }
1699                        }
1700                        $co{'title_short'} = chop_str($title, 50, 5);
1701                        last;
1702                }
1703        }
1704        if ($co{'title'} eq "") {
1705                $co{'title'} = $co{'title_short'} = '(no commit message)';
1706        }
1707        # remove added spaces
1708        foreach my $line (@commit_lines) {
1709                $line =~ s/^    //;
1710        }
1711        $co{'comment'} = \@commit_lines;
1712
1713        my $age = time - $co{'committer_epoch'};
1714        $co{'age'} = $age;
1715        $co{'age_string'} = age_string($age);
1716        my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($co{'committer_epoch'});
1717        if ($age > 60*60*24*7*2) {
1718                $co{'age_string_date'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
1719                $co{'age_string_age'} = $co{'age_string'};
1720        } else {
1721                $co{'age_string_date'} = $co{'age_string'};
1722                $co{'age_string_age'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
1723        }
1724        return %co;
1725}
1726
1727sub parse_commit {
1728        my ($commit_id) = @_;
1729        my %co;
1730
1731        local $/ = "\0";
1732
1733        open my $fd, "-|", git_cmd(), "rev-list",
1734                "--parents",
1735                "--header",
1736                "--max-count=1",
1737                $commit_id,
1738                "--",
1739                or die_error(undef, "Open git-rev-list failed");
1740        %co = parse_commit_text(<$fd>, 1);
1741        close $fd;
1742
1743        return %co;
1744}
1745
1746sub parse_commits {
1747        my ($commit_id, $maxcount, $skip, $arg, $filename) = @_;
1748        my @cos;
1749
1750        $maxcount ||= 1;
1751        $skip ||= 0;
1752
1753        local $/ = "\0";
1754
1755        open my $fd, "-|", git_cmd(), "rev-list",
1756                "--header",
1757                ($arg ? ($arg) : ()),
1758                ("--max-count=" . $maxcount),
1759                ("--skip=" . $skip),
1760                $commit_id,
1761                "--",
1762                ($filename ? ($filename) : ())
1763                or die_error(undef, "Open git-rev-list failed");
1764        while (my $line = <$fd>) {
1765                my %co = parse_commit_text($line);
1766                push @cos, \%co;
1767        }
1768        close $fd;
1769
1770        return wantarray ? @cos : \@cos;
1771}
1772
1773# parse ref from ref_file, given by ref_id, with given type
1774sub parse_ref {
1775        my $ref_file = shift;
1776        my $ref_id = shift;
1777        my $type = shift || git_get_type($ref_id);
1778        my %ref_item;
1779
1780        $ref_item{'type'} = $type;
1781        $ref_item{'id'} = $ref_id;
1782        $ref_item{'epoch'} = 0;
1783        $ref_item{'age'} = "unknown";
1784        if ($type eq "tag") {
1785                my %tag = parse_tag($ref_id);
1786                $ref_item{'comment'} = $tag{'comment'};
1787                if ($tag{'type'} eq "commit") {
1788                        my %co = parse_commit($tag{'object'});
1789                        $ref_item{'epoch'} = $co{'committer_epoch'};
1790                        $ref_item{'age'} = $co{'age_string'};
1791                } elsif (defined($tag{'epoch'})) {
1792                        my $age = time - $tag{'epoch'};
1793                        $ref_item{'epoch'} = $tag{'epoch'};
1794                        $ref_item{'age'} = age_string($age);
1795                }
1796                $ref_item{'reftype'} = $tag{'type'};
1797                $ref_item{'name'} = $tag{'name'};
1798                $ref_item{'refid'} = $tag{'object'};
1799        } elsif ($type eq "commit"){
1800                my %co = parse_commit($ref_id);
1801                $ref_item{'reftype'} = "commit";
1802                $ref_item{'name'} = $ref_file;
1803                $ref_item{'title'} = $co{'title'};
1804                $ref_item{'refid'} = $ref_id;
1805                $ref_item{'epoch'} = $co{'committer_epoch'};
1806                $ref_item{'age'} = $co{'age_string'};
1807        } else {
1808                $ref_item{'reftype'} = $type;
1809                $ref_item{'name'} = $ref_file;
1810                $ref_item{'refid'} = $ref_id;
1811        }
1812
1813        return %ref_item;
1814}
1815
1816# parse line of git-diff-tree "raw" output
1817sub parse_difftree_raw_line {
1818        my $line = shift;
1819        my %res;
1820
1821        # ':100644 100644 03b218260e99b78c6df0ed378e59ed9205ccc96d 3b93d5e7cc7f7dd4ebed13a5cc1a4ad976fc94d8 M   ls-files.c'
1822        # ':100644 100644 7f9281985086971d3877aca27704f2aaf9c448ce bc190ebc71bbd923f2b728e505408f5e54bd073a M   rev-tree.c'
1823        if ($line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)([0-9]{0,3})\t(.*)$/) {
1824                $res{'from_mode'} = $1;
1825                $res{'to_mode'} = $2;
1826                $res{'from_id'} = $3;
1827                $res{'to_id'} = $4;
1828                $res{'status'} = $5;
1829                $res{'similarity'} = $6;
1830                if ($res{'status'} eq 'R' || $res{'status'} eq 'C') { # renamed or copied
1831                        ($res{'from_file'}, $res{'to_file'}) = map { unquote($_) } split("\t", $7);
1832                } else {
1833                        $res{'file'} = unquote($7);
1834                }
1835        }
1836        # '::100755 100755 100755 60e79ca1b01bc8b057abe17ddab484699a7f5fdb 94067cc5f73388f33722d52ae02f44692bc07490 94067cc5f73388f33722d52ae02f44692bc07490 MR git-gui/git-gui.sh'
1837        # combined diff (for merge commit)
1838        elsif ($line =~ s/^(::+)((?:[0-7]{6} )+)((?:[0-9a-fA-F]{40} )+)([a-zA-Z]+)\t(.*)$//) {
1839                $res{'nparents'}  = length($1);
1840                $res{'from_mode'} = [ split(' ', $2) ];
1841                $res{'to_mode'} = pop @{$res{'from_mode'}};
1842                $res{'from_id'} = [ split(' ', $3) ];
1843                $res{'to_id'} = pop @{$res{'from_id'}};
1844                $res{'status'} = [ split('', $4) ];
1845                $res{'to_file'} = unquote($5);
1846        }
1847        # 'c512b523472485aef4fff9e57b229d9d243c967f'
1848        elsif ($line =~ m/^([0-9a-fA-F]{40})$/) {
1849                $res{'commit'} = $1;
1850        }
1851
1852        return wantarray ? %res : \%res;
1853}
1854
1855# parse line of git-ls-tree output
1856sub parse_ls_tree_line ($;%) {
1857        my $line = shift;
1858        my %opts = @_;
1859        my %res;
1860
1861        #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
1862        $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t(.+)$/s;
1863
1864        $res{'mode'} = $1;
1865        $res{'type'} = $2;
1866        $res{'hash'} = $3;
1867        if ($opts{'-z'}) {
1868                $res{'name'} = $4;
1869        } else {
1870                $res{'name'} = unquote($4);
1871        }
1872
1873        return wantarray ? %res : \%res;
1874}
1875
1876# generates _two_ hashes, references to which are passed as 2 and 3 argument
1877sub parse_from_to_diffinfo {
1878        my ($diffinfo, $from, $to, @parents) = @_;
1879
1880        if ($diffinfo->{'nparents'}) {
1881                # combined diff
1882                $from->{'file'} = [];
1883                $from->{'href'} = [];
1884                fill_from_file_info($diffinfo, @parents)
1885                        unless exists $diffinfo->{'from_file'};
1886                for (my $i = 0; $i < $diffinfo->{'nparents'}; $i++) {
1887                        $from->{'file'}[$i] = $diffinfo->{'from_file'}[$i] || $diffinfo->{'to_file'};
1888                        if ($diffinfo->{'status'}[$i] ne "A") { # not new (added) file
1889                                $from->{'href'}[$i] = href(action=>"blob",
1890                                                           hash_base=>$parents[$i],
1891                                                           hash=>$diffinfo->{'from_id'}[$i],
1892                                                           file_name=>$from->{'file'}[$i]);
1893                        } else {
1894                                $from->{'href'}[$i] = undef;
1895                        }
1896                }
1897        } else {
1898                $from->{'file'} = $diffinfo->{'from_file'} || $diffinfo->{'file'};
1899                if ($diffinfo->{'status'} ne "A") { # not new (added) file
1900                        $from->{'href'} = href(action=>"blob", hash_base=>$hash_parent,
1901                                               hash=>$diffinfo->{'from_id'},
1902                                               file_name=>$from->{'file'});
1903                } else {
1904                        delete $from->{'href'};
1905                }
1906        }
1907
1908        $to->{'file'} = $diffinfo->{'to_file'} || $diffinfo->{'file'};
1909        if (!is_deleted($diffinfo)) { # file exists in result
1910                $to->{'href'} = href(action=>"blob", hash_base=>$hash,
1911                                     hash=>$diffinfo->{'to_id'},
1912                                     file_name=>$to->{'file'});
1913        } else {
1914                delete $to->{'href'};
1915        }
1916}
1917
1918## ......................................................................
1919## parse to array of hashes functions
1920
1921sub git_get_heads_list {
1922        my $limit = shift;
1923        my @headslist;
1924
1925        open my $fd, '-|', git_cmd(), 'for-each-ref',
1926                ($limit ? '--count='.($limit+1) : ()), '--sort=-committerdate',
1927                '--format=%(objectname) %(refname) %(subject)%00%(committer)',
1928                'refs/heads'
1929                or return;
1930        while (my $line = <$fd>) {
1931                my %ref_item;
1932
1933                chomp $line;
1934                my ($refinfo, $committerinfo) = split(/\0/, $line);
1935                my ($hash, $name, $title) = split(' ', $refinfo, 3);
1936                my ($committer, $epoch, $tz) =
1937                        ($committerinfo =~ /^(.*) ([0-9]+) (.*)$/);
1938                $name =~ s!^refs/heads/!!;
1939
1940                $ref_item{'name'}  = $name;
1941                $ref_item{'id'}    = $hash;
1942                $ref_item{'title'} = $title || '(no commit message)';
1943                $ref_item{'epoch'} = $epoch;
1944                if ($epoch) {
1945                        $ref_item{'age'} = age_string(time - $ref_item{'epoch'});
1946                } else {
1947                        $ref_item{'age'} = "unknown";
1948                }
1949
1950                push @headslist, \%ref_item;
1951        }
1952        close $fd;
1953
1954        return wantarray ? @headslist : \@headslist;
1955}
1956
1957sub git_get_tags_list {
1958        my $limit = shift;
1959        my @tagslist;
1960
1961        open my $fd, '-|', git_cmd(), 'for-each-ref',
1962                ($limit ? '--count='.($limit+1) : ()), '--sort=-creatordate',
1963                '--format=%(objectname) %(objecttype) %(refname) '.
1964                '%(*objectname) %(*objecttype) %(subject)%00%(creator)',
1965                'refs/tags'
1966                or return;
1967        while (my $line = <$fd>) {
1968                my %ref_item;
1969
1970                chomp $line;
1971                my ($refinfo, $creatorinfo) = split(/\0/, $line);
1972                my ($id, $type, $name, $refid, $reftype, $title) = split(' ', $refinfo, 6);
1973                my ($creator, $epoch, $tz) =
1974                        ($creatorinfo =~ /^(.*) ([0-9]+) (.*)$/);
1975                $name =~ s!^refs/tags/!!;
1976
1977                $ref_item{'type'} = $type;
1978                $ref_item{'id'} = $id;
1979                $ref_item{'name'} = $name;
1980                if ($type eq "tag") {
1981                        $ref_item{'subject'} = $title;
1982                        $ref_item{'reftype'} = $reftype;
1983                        $ref_item{'refid'}   = $refid;
1984                } else {
1985                        $ref_item{'reftype'} = $type;
1986                        $ref_item{'refid'}   = $id;
1987                }
1988
1989                if ($type eq "tag" || $type eq "commit") {
1990                        $ref_item{'epoch'} = $epoch;
1991                        if ($epoch) {
1992                                $ref_item{'age'} = age_string(time - $ref_item{'epoch'});
1993                        } else {
1994                                $ref_item{'age'} = "unknown";
1995                        }
1996                }
1997
1998                push @tagslist, \%ref_item;
1999        }
2000        close $fd;
2001
2002        return wantarray ? @tagslist : \@tagslist;
2003}
2004
2005## ----------------------------------------------------------------------
2006## filesystem-related functions
2007
2008sub get_file_owner {
2009        my $path = shift;
2010
2011        my ($dev, $ino, $mode, $nlink, $st_uid, $st_gid, $rdev, $size) = stat($path);
2012        my ($name, $passwd, $uid, $gid, $quota, $comment, $gcos, $dir, $shell) = getpwuid($st_uid);
2013        if (!defined $gcos) {
2014                return undef;
2015        }
2016        my $owner = $gcos;
2017        $owner =~ s/[,;].*$//;
2018        return to_utf8($owner);
2019}
2020
2021## ......................................................................
2022## mimetype related functions
2023
2024sub mimetype_guess_file {
2025        my $filename = shift;
2026        my $mimemap = shift;
2027        -r $mimemap or return undef;
2028
2029        my %mimemap;
2030        open(MIME, $mimemap) or return undef;
2031        while (<MIME>) {
2032                next if m/^#/; # skip comments
2033                my ($mime, $exts) = split(/\t+/);
2034                if (defined $exts) {
2035                        my @exts = split(/\s+/, $exts);
2036                        foreach my $ext (@exts) {
2037                                $mimemap{$ext} = $mime;
2038                        }
2039                }
2040        }
2041        close(MIME);
2042
2043        $filename =~ /\.([^.]*)$/;
2044        return $mimemap{$1};
2045}
2046
2047sub mimetype_guess {
2048        my $filename = shift;
2049        my $mime;
2050        $filename =~ /\./ or return undef;
2051
2052        if ($mimetypes_file) {
2053                my $file = $mimetypes_file;
2054                if ($file !~ m!^/!) { # if it is relative path
2055                        # it is relative to project
2056                        $file = "$projectroot/$project/$file";
2057                }
2058                $mime = mimetype_guess_file($filename, $file);
2059        }
2060        $mime ||= mimetype_guess_file($filename, '/etc/mime.types');
2061        return $mime;
2062}
2063
2064sub blob_mimetype {
2065        my $fd = shift;
2066        my $filename = shift;
2067
2068        if ($filename) {
2069                my $mime = mimetype_guess($filename);
2070                $mime and return $mime;
2071        }
2072
2073        # just in case
2074        return $default_blob_plain_mimetype unless $fd;
2075
2076        if (-T $fd) {
2077                return 'text/plain' .
2078                       ($default_text_plain_charset ? '; charset='.$default_text_plain_charset : '');
2079        } elsif (! $filename) {
2080                return 'application/octet-stream';
2081        } elsif ($filename =~ m/\.png$/i) {
2082                return 'image/png';
2083        } elsif ($filename =~ m/\.gif$/i) {
2084                return 'image/gif';
2085        } elsif ($filename =~ m/\.jpe?g$/i) {
2086                return 'image/jpeg';
2087        } else {
2088                return 'application/octet-stream';
2089        }
2090}
2091
2092## ======================================================================
2093## functions printing HTML: header, footer, error page
2094
2095sub git_header_html {
2096        my $status = shift || "200 OK";
2097        my $expires = shift;
2098
2099        my $title = "$site_name";
2100        if (defined $project) {
2101                $title .= " - " . to_utf8($project);
2102                if (defined $action) {
2103                        $title .= "/$action";
2104                        if (defined $file_name) {
2105                                $title .= " - " . esc_path($file_name);
2106                                if ($action eq "tree" && $file_name !~ m|/$|) {
2107                                        $title .= "/";
2108                                }
2109                        }
2110                }
2111        }
2112        my $content_type;
2113        # require explicit support from the UA if we are to send the page as
2114        # 'application/xhtml+xml', otherwise send it as plain old 'text/html'.
2115        # we have to do this because MSIE sometimes globs '*/*', pretending to
2116        # support xhtml+xml but choking when it gets what it asked for.
2117        if (defined $cgi->http('HTTP_ACCEPT') &&
2118            $cgi->http('HTTP_ACCEPT') =~ m/(,|;|\s|^)application\/xhtml\+xml(,|;|\s|$)/ &&
2119            $cgi->Accept('application/xhtml+xml') != 0) {
2120                $content_type = 'application/xhtml+xml';
2121        } else {
2122                $content_type = 'text/html';
2123        }
2124        print $cgi->header(-type=>$content_type, -charset => 'utf-8',
2125                           -status=> $status, -expires => $expires);
2126        my $mod_perl_version = $ENV{'MOD_PERL'} ? " $ENV{'MOD_PERL'}" : '';
2127        print <<EOF;
2128<?xml version="1.0" encoding="utf-8"?>
2129<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
2130<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en-US" lang="en-US">
2131<!-- git web interface version $version, (C) 2005-2006, Kay Sievers <kay.sievers\@vrfy.org>, Christian Gierke -->
2132<!-- git core binaries version $git_version -->
2133<head>
2134<meta http-equiv="content-type" content="$content_type; charset=utf-8"/>
2135<meta name="generator" content="gitweb/$version git/$git_version$mod_perl_version"/>
2136<meta name="robots" content="index, nofollow"/>
2137<title>$title</title>
2138EOF
2139# print out each stylesheet that exist
2140        if (defined $stylesheet) {
2141#provides backwards capability for those people who define style sheet in a config file
2142                print '<link rel="stylesheet" type="text/css" href="'.$stylesheet.'"/>'."\n";
2143        } else {
2144                foreach my $stylesheet (@stylesheets) {
2145                        next unless $stylesheet;
2146                        print '<link rel="stylesheet" type="text/css" href="'.$stylesheet.'"/>'."\n";
2147                }
2148        }
2149        if (defined $project) {
2150                printf('<link rel="alternate" title="%s log RSS feed" '.
2151                       'href="%s" type="application/rss+xml" />'."\n",
2152                       esc_param($project), href(action=>"rss"));
2153                printf('<link rel="alternate" title="%s log Atom feed" '.
2154                       'href="%s" type="application/atom+xml" />'."\n",
2155                       esc_param($project), href(action=>"atom"));
2156        } else {
2157                printf('<link rel="alternate" title="%s projects list" '.
2158                       'href="%s" type="text/plain; charset=utf-8"/>'."\n",
2159                       $site_name, href(project=>undef, action=>"project_index"));
2160                printf('<link rel="alternate" title="%s projects feeds" '.
2161                       'href="%s" type="text/x-opml"/>'."\n",
2162                       $site_name, href(project=>undef, action=>"opml"));
2163        }
2164        if (defined $favicon) {
2165                print qq(<link rel="shortcut icon" href="$favicon" type="image/png"/>\n);
2166        }
2167
2168        print "</head>\n" .
2169              "<body>\n";
2170
2171        if (-f $site_header) {
2172                open (my $fd, $site_header);
2173                print <$fd>;
2174                close $fd;
2175        }
2176
2177        print "<div class=\"page_header\">\n" .
2178              $cgi->a({-href => esc_url($logo_url),
2179                       -title => $logo_label},
2180                      qq(<img src="$logo" width="72" height="27" alt="git" class="logo"/>));
2181        print $cgi->a({-href => esc_url($home_link)}, $home_link_str) . " / ";
2182        if (defined $project) {
2183                print $cgi->a({-href => href(action=>"summary")}, esc_html($project));
2184                if (defined $action) {
2185                        print " / $action";
2186                }
2187                print "\n";
2188        }
2189        print "</div>\n";
2190
2191        my ($have_search) = gitweb_check_feature('search');
2192        if ((defined $project) && ($have_search)) {
2193                if (!defined $searchtext) {
2194                        $searchtext = "";
2195                }
2196                my $search_hash;
2197                if (defined $hash_base) {
2198                        $search_hash = $hash_base;
2199                } elsif (defined $hash) {
2200                        $search_hash = $hash;
2201                } else {
2202                        $search_hash = "HEAD";
2203                }
2204                $cgi->param("a", "search");
2205                $cgi->param("h", $search_hash);
2206                $cgi->param("p", $project);
2207                print $cgi->startform(-method => "get", -action => $my_uri) .
2208                      "<div class=\"search\">\n" .
2209                      $cgi->hidden(-name => "p") . "\n" .
2210                      $cgi->hidden(-name => "a") . "\n" .
2211                      $cgi->hidden(-name => "h") . "\n" .
2212                      $cgi->popup_menu(-name => 'st', -default => 'commit',
2213                                       -values => ['commit', 'grep', 'author', 'committer', 'pickaxe']) .
2214                      $cgi->sup($cgi->a({-href => href(action=>"search_help")}, "?")) .
2215                      " search:\n",
2216                      $cgi->textfield(-name => "s", -value => $searchtext) . "\n" .
2217                      "</div>" .
2218                      $cgi->end_form() . "\n";
2219        }
2220}
2221
2222sub git_footer_html {
2223        print "<div class=\"page_footer\">\n";
2224        if (defined $project) {
2225                my $descr = git_get_project_description($project);
2226                if (defined $descr) {
2227                        print "<div class=\"page_footer_text\">" . esc_html($descr) . "</div>\n";
2228                }
2229                print $cgi->a({-href => href(action=>"rss"),
2230                              -class => "rss_logo"}, "RSS") . " ";
2231                print $cgi->a({-href => href(action=>"atom"),
2232                              -class => "rss_logo"}, "Atom") . "\n";
2233        } else {
2234                print $cgi->a({-href => href(project=>undef, action=>"opml"),
2235                              -class => "rss_logo"}, "OPML") . " ";
2236                print $cgi->a({-href => href(project=>undef, action=>"project_index"),
2237                              -class => "rss_logo"}, "TXT") . "\n";
2238        }
2239        print "</div>\n" ;
2240
2241        if (-f $site_footer) {
2242                open (my $fd, $site_footer);
2243                print <$fd>;
2244                close $fd;
2245        }
2246
2247        print "</body>\n" .
2248              "</html>";
2249}
2250
2251sub die_error {
2252        my $status = shift || "403 Forbidden";
2253        my $error = shift || "Malformed query, file missing or permission denied";
2254
2255        git_header_html($status);
2256        print <<EOF;
2257<div class="page_body">
2258<br /><br />
2259$status - $error
2260<br />
2261</div>
2262EOF
2263        git_footer_html();
2264        exit;
2265}
2266
2267## ----------------------------------------------------------------------
2268## functions printing or outputting HTML: navigation
2269
2270sub git_print_page_nav {
2271        my ($current, $suppress, $head, $treehead, $treebase, $extra) = @_;
2272        $extra = '' if !defined $extra; # pager or formats
2273
2274        my @navs = qw(summary shortlog log commit commitdiff tree);
2275        if ($suppress) {
2276                @navs = grep { $_ ne $suppress } @navs;
2277        }
2278
2279        my %arg = map { $_ => {action=>$_} } @navs;
2280        if (defined $head) {
2281                for (qw(commit commitdiff)) {
2282                        $arg{$_}{'hash'} = $head;
2283                }
2284                if ($current =~ m/^(tree | log | shortlog | commit | commitdiff | search)$/x) {
2285                        for (qw(shortlog log)) {
2286                                $arg{$_}{'hash'} = $head;
2287                        }
2288                }
2289        }
2290        $arg{'tree'}{'hash'} = $treehead if defined $treehead;
2291        $arg{'tree'}{'hash_base'} = $treebase if defined $treebase;
2292
2293        print "<div class=\"page_nav\">\n" .
2294                (join " | ",
2295                 map { $_ eq $current ?
2296                       $_ : $cgi->a({-href => href(%{$arg{$_}})}, "$_")
2297                 } @navs);
2298        print "<br/>\n$extra<br/>\n" .
2299              "</div>\n";
2300}
2301
2302sub format_paging_nav {
2303        my ($action, $hash, $head, $page, $nrevs) = @_;
2304        my $paging_nav;
2305
2306
2307        if ($hash ne $head || $page) {
2308                $paging_nav .= $cgi->a({-href => href(action=>$action)}, "HEAD");
2309        } else {
2310                $paging_nav .= "HEAD";
2311        }
2312
2313        if ($page > 0) {
2314                $paging_nav .= " &sdot; " .
2315                        $cgi->a({-href => href(action=>$action, hash=>$hash, page=>$page-1),
2316                                 -accesskey => "p", -title => "Alt-p"}, "prev");
2317        } else {
2318                $paging_nav .= " &sdot; prev";
2319        }
2320
2321        if ($nrevs >= (100 * ($page+1)-1)) {
2322                $paging_nav .= " &sdot; " .
2323                        $cgi->a({-href => href(action=>$action, hash=>$hash, page=>$page+1),
2324                                 -accesskey => "n", -title => "Alt-n"}, "next");
2325        } else {
2326                $paging_nav .= " &sdot; next";
2327        }
2328
2329        return $paging_nav;
2330}
2331
2332## ......................................................................
2333## functions printing or outputting HTML: div
2334
2335sub git_print_header_div {
2336        my ($action, $title, $hash, $hash_base) = @_;
2337        my %args = ();
2338
2339        $args{'action'} = $action;
2340        $args{'hash'} = $hash if $hash;
2341        $args{'hash_base'} = $hash_base if $hash_base;
2342
2343        print "<div class=\"header\">\n" .
2344              $cgi->a({-href => href(%args), -class => "title"},
2345              $title ? $title : $action) .
2346              "\n</div>\n";
2347}
2348
2349#sub git_print_authorship (\%) {
2350sub git_print_authorship {
2351        my $co = shift;
2352
2353        my %ad = parse_date($co->{'author_epoch'}, $co->{'author_tz'});
2354        print "<div class=\"author_date\">" .
2355              esc_html($co->{'author_name'}) .
2356              " [$ad{'rfc2822'}";
2357        if ($ad{'hour_local'} < 6) {
2358                printf(" (<span class=\"atnight\">%02d:%02d</span> %s)",
2359                       $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
2360        } else {
2361                printf(" (%02d:%02d %s)",
2362                       $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
2363        }
2364        print "]</div>\n";
2365}
2366
2367sub git_print_page_path {
2368        my $name = shift;
2369        my $type = shift;
2370        my $hb = shift;
2371
2372
2373        print "<div class=\"page_path\">";
2374        print $cgi->a({-href => href(action=>"tree", hash_base=>$hb),
2375                      -title => 'tree root'}, to_utf8("[$project]"));
2376        print " / ";
2377        if (defined $name) {
2378                my @dirname = split '/', $name;
2379                my $basename = pop @dirname;
2380                my $fullname = '';
2381
2382                foreach my $dir (@dirname) {
2383                        $fullname .= ($fullname ? '/' : '') . $dir;
2384                        print $cgi->a({-href => href(action=>"tree", file_name=>$fullname,
2385                                                     hash_base=>$hb),
2386                                      -title => $fullname}, esc_path($dir));
2387                        print " / ";
2388                }
2389                if (defined $type && $type eq 'blob') {
2390                        print $cgi->a({-href => href(action=>"blob_plain", file_name=>$file_name,
2391                                                     hash_base=>$hb),
2392                                      -title => $name}, esc_path($basename));
2393                } elsif (defined $type && $type eq 'tree') {
2394                        print $cgi->a({-href => href(action=>"tree", file_name=>$file_name,
2395                                                     hash_base=>$hb),
2396                                      -title => $name}, esc_path($basename));
2397                        print " / ";
2398                } else {
2399                        print esc_path($basename);
2400                }
2401        }
2402        print "<br/></div>\n";
2403}
2404
2405# sub git_print_log (\@;%) {
2406sub git_print_log ($;%) {
2407        my $log = shift;
2408        my %opts = @_;
2409
2410        if ($opts{'-remove_title'}) {
2411                # remove title, i.e. first line of log
2412                shift @$log;
2413        }
2414        # remove leading empty lines
2415        while (defined $log->[0] && $log->[0] eq "") {
2416                shift @$log;
2417        }
2418
2419        # print log
2420        my $signoff = 0;
2421        my $empty = 0;
2422        foreach my $line (@$log) {
2423                if ($line =~ m/^ *(signed[ \-]off[ \-]by[ :]|acked[ \-]by[ :]|cc[ :])/i) {
2424                        $signoff = 1;
2425                        $empty = 0;
2426                        if (! $opts{'-remove_signoff'}) {
2427                                print "<span class=\"signoff\">" . esc_html($line) . "</span><br/>\n";
2428                                next;
2429                        } else {
2430                                # remove signoff lines
2431                                next;
2432                        }
2433                } else {
2434                        $signoff = 0;
2435                }
2436
2437                # print only one empty line
2438                # do not print empty line after signoff
2439                if ($line eq "") {
2440                        next if ($empty || $signoff);
2441                        $empty = 1;
2442                } else {
2443                        $empty = 0;
2444                }
2445
2446                print format_log_line_html($line) . "<br/>\n";
2447        }
2448
2449        if ($opts{'-final_empty_line'}) {
2450                # end with single empty line
2451                print "<br/>\n" unless $empty;
2452        }
2453}
2454
2455# return link target (what link points to)
2456sub git_get_link_target {
2457        my $hash = shift;
2458        my $link_target;
2459
2460        # read link
2461        open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
2462                or return;
2463        {
2464                local $/;
2465                $link_target = <$fd>;
2466        }
2467        close $fd
2468                or return;
2469
2470        return $link_target;
2471}
2472
2473# given link target, and the directory (basedir) the link is in,
2474# return target of link relative to top directory (top tree);
2475# return undef if it is not possible (including absolute links).
2476sub normalize_link_target {
2477        my ($link_target, $basedir, $hash_base) = @_;
2478
2479        # we can normalize symlink target only if $hash_base is provided
2480        return unless $hash_base;
2481
2482        # absolute symlinks (beginning with '/') cannot be normalized
2483        return if (substr($link_target, 0, 1) eq '/');
2484
2485        # normalize link target to path from top (root) tree (dir)
2486        my $path;
2487        if ($basedir) {
2488                $path = $basedir . '/' . $link_target;
2489        } else {
2490                # we are in top (root) tree (dir)
2491                $path = $link_target;
2492        }
2493
2494        # remove //, /./, and /../
2495        my @path_parts;
2496        foreach my $part (split('/', $path)) {
2497                # discard '.' and ''
2498                next if (!$part || $part eq '.');
2499                # handle '..'
2500                if ($part eq '..') {
2501                        if (@path_parts) {
2502                                pop @path_parts;
2503                        } else {
2504                                # link leads outside repository (outside top dir)
2505                                return;
2506                        }
2507                } else {
2508                        push @path_parts, $part;
2509                }
2510        }
2511        $path = join('/', @path_parts);
2512
2513        return $path;
2514}
2515
2516# print tree entry (row of git_tree), but without encompassing <tr> element
2517sub git_print_tree_entry {
2518        my ($t, $basedir, $hash_base, $have_blame) = @_;
2519
2520        my %base_key = ();
2521        $base_key{'hash_base'} = $hash_base if defined $hash_base;
2522
2523        # The format of a table row is: mode list link.  Where mode is
2524        # the mode of the entry, list is the name of the entry, an href,
2525        # and link is the action links of the entry.
2526
2527        print "<td class=\"mode\">" . mode_str($t->{'mode'}) . "</td>\n";
2528        if ($t->{'type'} eq "blob") {
2529                print "<td class=\"list\">" .
2530                        $cgi->a({-href => href(action=>"blob", hash=>$t->{'hash'},
2531                                               file_name=>"$basedir$t->{'name'}", %base_key),
2532                                -class => "list"}, esc_path($t->{'name'}));
2533                if (S_ISLNK(oct $t->{'mode'})) {
2534                        my $link_target = git_get_link_target($t->{'hash'});
2535                        if ($link_target) {
2536                                my $norm_target = normalize_link_target($link_target, $basedir, $hash_base);
2537                                if (defined $norm_target) {
2538                                        print " -> " .
2539                                              $cgi->a({-href => href(action=>"object", hash_base=>$hash_base,
2540                                                                     file_name=>$norm_target),
2541                                                       -title => $norm_target}, esc_path($link_target));
2542                                } else {
2543                                        print " -> " . esc_path($link_target);
2544                                }
2545                        }
2546                }
2547                print "</td>\n";
2548                print "<td class=\"link\">";
2549                print $cgi->a({-href => href(action=>"blob", hash=>$t->{'hash'},
2550                                             file_name=>"$basedir$t->{'name'}", %base_key)},
2551                              "blob");
2552                if ($have_blame) {
2553                        print " | " .
2554                              $cgi->a({-href => href(action=>"blame", hash=>$t->{'hash'},
2555                                                     file_name=>"$basedir$t->{'name'}", %base_key)},
2556                                      "blame");
2557                }
2558                if (defined $hash_base) {
2559                        print " | " .
2560                              $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
2561                                                     hash=>$t->{'hash'}, file_name=>"$basedir$t->{'name'}")},
2562                                      "history");
2563                }
2564                print " | " .
2565                        $cgi->a({-href => href(action=>"blob_plain", hash_base=>$hash_base,
2566                                               file_name=>"$basedir$t->{'name'}")},
2567                                "raw");
2568                print "</td>\n";
2569
2570        } elsif ($t->{'type'} eq "tree") {
2571                print "<td class=\"list\">";
2572                print $cgi->a({-href => href(action=>"tree", hash=>$t->{'hash'},
2573                                             file_name=>"$basedir$t->{'name'}", %base_key)},
2574                              esc_path($t->{'name'}));
2575                print "</td>\n";
2576                print "<td class=\"link\">";
2577                print $cgi->a({-href => href(action=>"tree", hash=>$t->{'hash'},
2578                                             file_name=>"$basedir$t->{'name'}", %base_key)},
2579                              "tree");
2580                if (defined $hash_base) {
2581                        print " | " .
2582                              $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
2583                                                     file_name=>"$basedir$t->{'name'}")},
2584                                      "history");
2585                }
2586                print "</td>\n";
2587        }
2588}
2589
2590## ......................................................................
2591## functions printing large fragments of HTML
2592
2593sub fill_from_file_info {
2594        my ($diff, @parents) = @_;
2595
2596        $diff->{'from_file'} = [ ];
2597        $diff->{'from_file'}[$diff->{'nparents'} - 1] = undef;
2598        for (my $i = 0; $i < $diff->{'nparents'}; $i++) {
2599                if ($diff->{'status'}[$i] eq 'R' ||
2600                    $diff->{'status'}[$i] eq 'C') {
2601                        $diff->{'from_file'}[$i] =
2602                                git_get_path_by_hash($parents[$i], $diff->{'from_id'}[$i]);
2603                }
2604        }
2605
2606        return $diff;
2607}
2608
2609# parameters can be strings, or references to arrays of strings
2610sub from_ids_eq {
2611        my ($a, $b) = @_;
2612
2613        if (ref($a) eq "ARRAY" && ref($b) eq "ARRAY" && @$a == @$b) {
2614                for (my $i = 0; $i < @$a; ++$i) {
2615                        return 0 unless ($a->[$i] eq $b->[$i]);
2616                }
2617                return 1;
2618        } elsif (!ref($a) && !ref($b)) {
2619                return $a eq $b;
2620        } else {
2621                return 0;
2622        }
2623}
2624
2625sub is_deleted {
2626        my $diffinfo = shift;
2627
2628        return $diffinfo->{'to_id'} eq ('0' x 40);
2629}
2630
2631sub git_difftree_body {
2632        my ($difftree, $hash, @parents) = @_;
2633        my ($parent) = $parents[0];
2634        my ($have_blame) = gitweb_check_feature('blame');
2635        print "<div class=\"list_head\">\n";
2636        if ($#{$difftree} > 10) {
2637                print(($#{$difftree} + 1) . " files changed:\n");
2638        }
2639        print "</div>\n";
2640
2641        print "<table class=\"" .
2642              (@parents > 1 ? "combined " : "") .
2643              "diff_tree\">\n";
2644
2645        # header only for combined diff in 'commitdiff' view
2646        my $has_header = @parents > 1 && $action eq 'commitdiff';
2647        if ($has_header) {
2648                # table header
2649                print "<thead><tr>\n" .
2650                       "<th></th><th></th>\n"; # filename, patchN link
2651                for (my $i = 0; $i < @parents; $i++) {
2652                        my $par = $parents[$i];
2653                        print "<th>" .
2654                              $cgi->a({-href => href(action=>"commitdiff",
2655                                                     hash=>$hash, hash_parent=>$par),
2656                                       -title => 'commitdiff to parent number ' .
2657                                                  ($i+1) . ': ' . substr($par,0,7)},
2658                                      $i+1) .
2659                              "&nbsp;</th>\n";
2660                }
2661                print "</tr></thead>\n<tbody>\n";
2662        }
2663
2664        my $alternate = 1;
2665        my $patchno = 0;
2666        foreach my $line (@{$difftree}) {
2667                my $diff;
2668                if (ref($line) eq "HASH") {
2669                        # pre-parsed (or generated by hand)
2670                        $diff = $line;
2671                } else {
2672                        $diff = parse_difftree_raw_line($line);
2673                }
2674
2675                if ($alternate) {
2676                        print "<tr class=\"dark\">\n";
2677                } else {
2678                        print "<tr class=\"light\">\n";
2679                }
2680                $alternate ^= 1;
2681
2682                if (exists $diff->{'nparents'}) { # combined diff
2683
2684                        fill_from_file_info($diff, @parents)
2685                                unless exists $diff->{'from_file'};
2686
2687                        if (!is_deleted($diff)) {
2688                                # file exists in the result (child) commit
2689                                print "<td>" .
2690                                      $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
2691                                                             file_name=>$diff->{'to_file'},
2692                                                             hash_base=>$hash),
2693                                              -class => "list"}, esc_path($diff->{'to_file'})) .
2694                                      "</td>\n";
2695                        } else {
2696                                print "<td>" .
2697                                      esc_path($diff->{'to_file'}) .
2698                                      "</td>\n";
2699                        }
2700
2701                        if ($action eq 'commitdiff') {
2702                                # link to patch
2703                                $patchno++;
2704                                print "<td class=\"link\">" .
2705                                      $cgi->a({-href => "#patch$patchno"}, "patch") .
2706                                      " | " .
2707                                      "</td>\n";
2708                        }
2709
2710                        my $has_history = 0;
2711                        my $not_deleted = 0;
2712                        for (my $i = 0; $i < $diff->{'nparents'}; $i++) {
2713                                my $hash_parent = $parents[$i];
2714                                my $from_hash = $diff->{'from_id'}[$i];
2715                                my $from_path = $diff->{'from_file'}[$i];
2716                                my $status = $diff->{'status'}[$i];
2717
2718                                $has_history ||= ($status ne 'A');
2719                                $not_deleted ||= ($status ne 'D');
2720
2721                                if ($status eq 'A') {
2722                                        print "<td  class=\"link\" align=\"right\"> | </td>\n";
2723                                } elsif ($status eq 'D') {
2724                                        print "<td class=\"link\">" .
2725                                              $cgi->a({-href => href(action=>"blob",
2726                                                                     hash_base=>$hash,
2727                                                                     hash=>$from_hash,
2728                                                                     file_name=>$from_path)},
2729                                                      "blob" . ($i+1)) .
2730                                              " | </td>\n";
2731                                } else {
2732                                        if ($diff->{'to_id'} eq $from_hash) {
2733                                                print "<td class=\"link nochange\">";
2734                                        } else {
2735                                                print "<td class=\"link\">";
2736                                        }
2737                                        print $cgi->a({-href => href(action=>"blobdiff",
2738                                                                     hash=>$diff->{'to_id'},
2739                                                                     hash_parent=>$from_hash,
2740                                                                     hash_base=>$hash,
2741                                                                     hash_parent_base=>$hash_parent,
2742                                                                     file_name=>$diff->{'to_file'},
2743                                                                     file_parent=>$from_path)},
2744                                                      "diff" . ($i+1)) .
2745                                              " | </td>\n";
2746                                }
2747                        }
2748
2749                        print "<td class=\"link\">";
2750                        if ($not_deleted) {
2751                                print $cgi->a({-href => href(action=>"blob",
2752                                                             hash=>$diff->{'to_id'},
2753                                                             file_name=>$diff->{'to_file'},
2754                                                             hash_base=>$hash)},
2755                                              "blob");
2756                                print " | " if ($has_history);
2757                        }
2758                        if ($has_history) {
2759                                print $cgi->a({-href => href(action=>"history",
2760                                                             file_name=>$diff->{'to_file'},
2761                                                             hash_base=>$hash)},
2762                                              "history");
2763                        }
2764                        print "</td>\n";
2765
2766                        print "</tr>\n";
2767                        next; # instead of 'else' clause, to avoid extra indent
2768                }
2769                # else ordinary diff
2770
2771                my ($to_mode_oct, $to_mode_str, $to_file_type);
2772                my ($from_mode_oct, $from_mode_str, $from_file_type);
2773                if ($diff->{'to_mode'} ne ('0' x 6)) {
2774                        $to_mode_oct = oct $diff->{'to_mode'};
2775                        if (S_ISREG($to_mode_oct)) { # only for regular file
2776                                $to_mode_str = sprintf("%04o", $to_mode_oct & 0777); # permission bits
2777                        }
2778                        $to_file_type = file_type($diff->{'to_mode'});
2779                }
2780                if ($diff->{'from_mode'} ne ('0' x 6)) {
2781                        $from_mode_oct = oct $diff->{'from_mode'};
2782                        if (S_ISREG($to_mode_oct)) { # only for regular file
2783                                $from_mode_str = sprintf("%04o", $from_mode_oct & 0777); # permission bits
2784                        }
2785                        $from_file_type = file_type($diff->{'from_mode'});
2786                }
2787
2788                if ($diff->{'status'} eq "A") { # created
2789                        my $mode_chng = "<span class=\"file_status new\">[new $to_file_type";
2790                        $mode_chng   .= " with mode: $to_mode_str" if $to_mode_str;
2791                        $mode_chng   .= "]</span>";
2792                        print "<td>";
2793                        print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
2794                                                     hash_base=>$hash, file_name=>$diff->{'file'}),
2795                                      -class => "list"}, esc_path($diff->{'file'}));
2796                        print "</td>\n";
2797                        print "<td>$mode_chng</td>\n";
2798                        print "<td class=\"link\">";
2799                        if ($action eq 'commitdiff') {
2800                                # link to patch
2801                                $patchno++;
2802                                print $cgi->a({-href => "#patch$patchno"}, "patch");
2803                                print " | ";
2804                        }
2805                        print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
2806                                                     hash_base=>$hash, file_name=>$diff->{'file'})},
2807                                      "blob");
2808                        print "</td>\n";
2809
2810                } elsif ($diff->{'status'} eq "D") { # deleted
2811                        my $mode_chng = "<span class=\"file_status deleted\">[deleted $from_file_type]</span>";
2812                        print "<td>";
2813                        print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'from_id'},
2814                                                     hash_base=>$parent, file_name=>$diff->{'file'}),
2815                                       -class => "list"}, esc_path($diff->{'file'}));
2816                        print "</td>\n";
2817                        print "<td>$mode_chng</td>\n";
2818                        print "<td class=\"link\">";
2819                        if ($action eq 'commitdiff') {
2820                                # link to patch
2821                                $patchno++;
2822                                print $cgi->a({-href => "#patch$patchno"}, "patch");
2823                                print " | ";
2824                        }
2825                        print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'from_id'},
2826                                                     hash_base=>$parent, file_name=>$diff->{'file'})},
2827                                      "blob") . " | ";
2828                        if ($have_blame) {
2829                                print $cgi->a({-href => href(action=>"blame", hash_base=>$parent,
2830                                                             file_name=>$diff->{'file'})},
2831                                              "blame") . " | ";
2832                        }
2833                        print $cgi->a({-href => href(action=>"history", hash_base=>$parent,
2834                                                     file_name=>$diff->{'file'})},
2835                                      "history");
2836                        print "</td>\n";
2837
2838                } elsif ($diff->{'status'} eq "M" || $diff->{'status'} eq "T") { # modified, or type changed
2839                        my $mode_chnge = "";
2840                        if ($diff->{'from_mode'} != $diff->{'to_mode'}) {
2841                                $mode_chnge = "<span class=\"file_status mode_chnge\">[changed";
2842                                if ($from_file_type ne $to_file_type) {
2843                                        $mode_chnge .= " from $from_file_type to $to_file_type";
2844                                }
2845                                if (($from_mode_oct & 0777) != ($to_mode_oct & 0777)) {
2846                                        if ($from_mode_str && $to_mode_str) {
2847                                                $mode_chnge .= " mode: $from_mode_str->$to_mode_str";
2848                                        } elsif ($to_mode_str) {
2849                                                $mode_chnge .= " mode: $to_mode_str";
2850                                        }
2851                                }
2852                                $mode_chnge .= "]</span>\n";
2853                        }
2854                        print "<td>";
2855                        print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
2856                                                     hash_base=>$hash, file_name=>$diff->{'file'}),
2857                                      -class => "list"}, esc_path($diff->{'file'}));
2858                        print "</td>\n";
2859                        print "<td>$mode_chnge</td>\n";
2860                        print "<td class=\"link\">";
2861                        if ($action eq 'commitdiff') {
2862                                # link to patch
2863                                $patchno++;
2864                                print $cgi->a({-href => "#patch$patchno"}, "patch") .
2865                                      " | ";
2866                        } elsif ($diff->{'to_id'} ne $diff->{'from_id'}) {
2867                                # "commit" view and modified file (not onlu mode changed)
2868                                print $cgi->a({-href => href(action=>"blobdiff",
2869                                                             hash=>$diff->{'to_id'}, hash_parent=>$diff->{'from_id'},
2870                                                             hash_base=>$hash, hash_parent_base=>$parent,
2871                                                             file_name=>$diff->{'file'})},
2872                                              "diff") .
2873                                      " | ";
2874                        }
2875                        print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
2876                                                     hash_base=>$hash, file_name=>$diff->{'file'})},
2877                                       "blob") . " | ";
2878                        if ($have_blame) {
2879                                print $cgi->a({-href => href(action=>"blame", hash_base=>$hash,
2880                                                             file_name=>$diff->{'file'})},
2881                                              "blame") . " | ";
2882                        }
2883                        print $cgi->a({-href => href(action=>"history", hash_base=>$hash,
2884                                                     file_name=>$diff->{'file'})},
2885                                      "history");
2886                        print "</td>\n";
2887
2888                } elsif ($diff->{'status'} eq "R" || $diff->{'status'} eq "C") { # renamed or copied
2889                        my %status_name = ('R' => 'moved', 'C' => 'copied');
2890                        my $nstatus = $status_name{$diff->{'status'}};
2891                        my $mode_chng = "";
2892                        if ($diff->{'from_mode'} != $diff->{'to_mode'}) {
2893                                # mode also for directories, so we cannot use $to_mode_str
2894                                $mode_chng = sprintf(", mode: %04o", $to_mode_oct & 0777);
2895                        }
2896                        print "<td>" .
2897                              $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
2898                                                     hash=>$diff->{'to_id'}, file_name=>$diff->{'to_file'}),
2899                                      -class => "list"}, esc_path($diff->{'to_file'})) . "</td>\n" .
2900                              "<td><span class=\"file_status $nstatus\">[$nstatus from " .
2901                              $cgi->a({-href => href(action=>"blob", hash_base=>$parent,
2902                                                     hash=>$diff->{'from_id'}, file_name=>$diff->{'from_file'}),
2903                                      -class => "list"}, esc_path($diff->{'from_file'})) .
2904                              " with " . (int $diff->{'similarity'}) . "% similarity$mode_chng]</span></td>\n" .
2905                              "<td class=\"link\">";
2906                        if ($action eq 'commitdiff') {
2907                                # link to patch
2908                                $patchno++;
2909                                print $cgi->a({-href => "#patch$patchno"}, "patch") .
2910                                      " | ";
2911                        } elsif ($diff->{'to_id'} ne $diff->{'from_id'}) {
2912                                # "commit" view and modified file (not only pure rename or copy)
2913                                print $cgi->a({-href => href(action=>"blobdiff",
2914                                                             hash=>$diff->{'to_id'}, hash_parent=>$diff->{'from_id'},
2915                                                             hash_base=>$hash, hash_parent_base=>$parent,
2916                                                             file_name=>$diff->{'to_file'}, file_parent=>$diff->{'from_file'})},
2917                                              "diff") .
2918                                      " | ";
2919                        }
2920                        print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
2921                                                     hash_base=>$parent, file_name=>$diff->{'to_file'})},
2922                                      "blob") . " | ";
2923                        if ($have_blame) {
2924                                print $cgi->a({-href => href(action=>"blame", hash_base=>$hash,
2925                                                             file_name=>$diff->{'to_file'})},
2926                                              "blame") . " | ";
2927                        }
2928                        print $cgi->a({-href => href(action=>"history", hash_base=>$hash,
2929                                                    file_name=>$diff->{'to_file'})},
2930                                      "history");
2931                        print "</td>\n";
2932
2933                } # we should not encounter Unmerged (U) or Unknown (X) status
2934                print "</tr>\n";
2935        }
2936        print "</tbody>" if $has_header;
2937        print "</table>\n";
2938}
2939
2940sub git_patchset_body {
2941        my ($fd, $difftree, $hash, @hash_parents) = @_;
2942        my ($hash_parent) = $hash_parents[0];
2943
2944        my $patch_idx = 0;
2945        my $patch_number = 0;
2946        my $patch_line;
2947        my $diffinfo;
2948        my (%from, %to);
2949
2950        print "<div class=\"patchset\">\n";
2951
2952        # skip to first patch
2953        while ($patch_line = <$fd>) {
2954                chomp $patch_line;
2955
2956                last if ($patch_line =~ m/^diff /);
2957        }
2958
2959 PATCH:
2960        while ($patch_line) {
2961                my @diff_header;
2962                my ($from_id, $to_id);
2963
2964                # git diff header
2965                #assert($patch_line =~ m/^diff /) if DEBUG;
2966                #assert($patch_line !~ m!$/$!) if DEBUG; # is chomp-ed
2967                $patch_number++;
2968                push @diff_header, $patch_line;
2969
2970                # extended diff header
2971        EXTENDED_HEADER:
2972                while ($patch_line = <$fd>) {
2973                        chomp $patch_line;
2974
2975                        last EXTENDED_HEADER if ($patch_line =~ m/^--- |^diff /);
2976
2977                        if ($patch_line =~ m/^index ([0-9a-fA-F]{40})..([0-9a-fA-F]{40})/) {
2978                                $from_id = $1;
2979                                $to_id   = $2;
2980                        } elsif ($patch_line =~ m/^index ((?:[0-9a-fA-F]{40},)+[0-9a-fA-F]{40})..([0-9a-fA-F]{40})/) {
2981                                $from_id = [ split(',', $1) ];
2982                                $to_id   = $2;
2983                        }
2984
2985                        push @diff_header, $patch_line;
2986                }
2987                my $last_patch_line = $patch_line;
2988
2989                # check if current patch belong to current raw line
2990                # and parse raw git-diff line if needed
2991                if (defined $diffinfo &&
2992                    defined $from_id && defined $to_id &&
2993                    from_ids_eq($diffinfo->{'from_id'}, $from_id) &&
2994                    $diffinfo->{'to_id'} eq $to_id) {
2995                        # this is continuation of a split patch
2996                        print "<div class=\"patch cont\">\n";
2997                } else {
2998                        # advance raw git-diff output if needed
2999                        $patch_idx++ if defined $diffinfo;
3000
3001                        # compact combined diff output can have some patches skipped
3002                        # find which patch (using pathname of result) we are at now
3003                        my $to_name;
3004                        if ($diff_header[0] =~ m!^diff --cc "?(.*)"?$!) {
3005                                $to_name = $1;
3006                        }
3007
3008                        do {
3009                                # read and prepare patch information
3010                                if (ref($difftree->[$patch_idx]) eq "HASH") {
3011                                        # pre-parsed (or generated by hand)
3012                                        $diffinfo = $difftree->[$patch_idx];
3013                                } else {
3014                                        $diffinfo = parse_difftree_raw_line($difftree->[$patch_idx]);
3015                                }
3016
3017                                # check if current raw line has no patch (it got simplified)
3018                                if (defined $to_name && $to_name ne $diffinfo->{'to_file'}) {
3019                                        print "<div class=\"patch\" id=\"patch". ($patch_idx+1) ."\">\n" .
3020                                              format_diff_cc_simplified($diffinfo, @hash_parents) .
3021                                              "</div>\n";  # class="patch"
3022
3023                                        $patch_idx++;
3024                                        $patch_number++;
3025                                }
3026                        } until (!defined $to_name || $to_name eq $diffinfo->{'to_file'} ||
3027                                 $patch_idx > $#$difftree);
3028                        # modifies %from, %to hashes
3029                        parse_from_to_diffinfo($diffinfo, \%from, \%to, @hash_parents);
3030                        if ($diffinfo->{'nparents'}) {
3031                                # combined diff
3032                                $from{'file'} = [];
3033                                $from{'href'} = [];
3034                                fill_from_file_info($diffinfo, @hash_parents)
3035                                        unless exists $diffinfo->{'from_file'};
3036                                for (my $i = 0; $i < $diffinfo->{'nparents'}; $i++) {
3037                                        $from{'file'}[$i] = $diffinfo->{'from_file'}[$i] || $diffinfo->{'to_file'};
3038                                        if ($diffinfo->{'status'}[$i] ne "A") { # not new (added) file
3039                                                $from{'href'}[$i] = href(action=>"blob",
3040                                                                         hash_base=>$hash_parents[$i],
3041                                                                         hash=>$diffinfo->{'from_id'}[$i],
3042                                                                         file_name=>$from{'file'}[$i]);
3043                                        } else {
3044                                                $from{'href'}[$i] = undef;
3045                                        }
3046                                }
3047                        } else {
3048                                $from{'file'} = $diffinfo->{'from_file'} || $diffinfo->{'file'};
3049                                if ($diffinfo->{'status'} ne "A") { # not new (added) file
3050                                        $from{'href'} = href(action=>"blob", hash_base=>$hash_parent,
3051                                                             hash=>$diffinfo->{'from_id'},
3052                                                             file_name=>$from{'file'});
3053                                } else {
3054                                        delete $from{'href'};
3055                                }
3056                        }
3057
3058                        $to{'file'} = $diffinfo->{'to_file'} || $diffinfo->{'file'};
3059                        if (!is_deleted($diffinfo)) { # file exists in result
3060                                $to{'href'} = href(action=>"blob", hash_base=>$hash,
3061                                                   hash=>$diffinfo->{'to_id'},
3062                                                   file_name=>$to{'file'});
3063                        } else {
3064                                delete $to{'href'};
3065                        }
3066                        # this is first patch for raw difftree line with $patch_idx index
3067                        # we index @$difftree array from 0, but number patches from 1
3068                        print "<div class=\"patch\" id=\"patch". ($patch_idx+1) ."\">\n";
3069                }
3070
3071                # print "git diff" header
3072                $patch_line = shift @diff_header;
3073                print format_git_diff_header_line($patch_line, $diffinfo,
3074                                                  \%from, \%to);
3075
3076                # print extended diff header
3077                print "<div class=\"diff extended_header\">\n" if (@diff_header > 0);
3078        EXTENDED_HEADER:
3079                foreach $patch_line (@diff_header) {
3080                        print format_extended_diff_header_line($patch_line, $diffinfo,
3081                                                               \%from, \%to);
3082                }
3083                print "</div>\n"  if (@diff_header > 0); # class="diff extended_header"
3084
3085                # from-file/to-file diff header
3086                $patch_line = $last_patch_line;
3087                if (! $patch_line) {
3088                        print "</div>\n"; # class="patch"
3089                        last PATCH;
3090                }
3091                next PATCH if ($patch_line =~ m/^diff /);
3092                #assert($patch_line =~ m/^---/) if DEBUG;
3093                #assert($patch_line eq $last_patch_line) if DEBUG;
3094
3095                $patch_line = <$fd>;
3096                chomp $patch_line;
3097                #assert($patch_line =~ m/^\+\+\+/) if DEBUG;
3098
3099                print format_diff_from_to_header($last_patch_line, $patch_line,
3100                                                 $diffinfo, \%from, \%to,
3101                                                 @hash_parents);
3102
3103                # the patch itself
3104        LINE:
3105                while ($patch_line = <$fd>) {
3106                        chomp $patch_line;
3107
3108                        next PATCH if ($patch_line =~ m/^diff /);
3109
3110                        print format_diff_line($patch_line, \%from, \%to);
3111                }
3112
3113        } continue {
3114                print "</div>\n"; # class="patch"
3115        }
3116
3117        # for compact combined (--cc) format, with chunk and patch simpliciaction
3118        # patchset might be empty, but there might be unprocessed raw lines
3119        for ($patch_idx++ if $patch_number > 0;
3120             $patch_idx < @$difftree;
3121             $patch_idx++) {
3122                # read and prepare patch information
3123                if (ref($difftree->[$patch_idx]) eq "HASH") {
3124                        # pre-parsed (or generated by hand)
3125                        $diffinfo = $difftree->[$patch_idx];
3126                } else {
3127                        $diffinfo = parse_difftree_raw_line($difftree->[$patch_idx]);
3128                }
3129
3130                # generate anchor for "patch" links in difftree / whatchanged part
3131                print "<div class=\"patch\" id=\"patch". ($patch_idx+1) ."\">\n" .
3132                      format_diff_cc_simplified($diffinfo, @hash_parents) .
3133                      "</div>\n";  # class="patch"
3134
3135                $patch_number++;
3136        }
3137
3138        if ($patch_number == 0) {
3139                if (@hash_parents > 1) {
3140                        print "<div class=\"diff nodifferences\">Trivial merge</div>\n";
3141                } else {
3142                        print "<div class=\"diff nodifferences\">No differences found</div>\n";
3143                }
3144        }
3145
3146        print "</div>\n"; # class="patchset"
3147}
3148
3149# . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3150
3151sub git_project_list_body {
3152        my ($projlist, $order, $from, $to, $extra, $no_header) = @_;
3153
3154        my ($check_forks) = gitweb_check_feature('forks');
3155
3156        my @projects;
3157        foreach my $pr (@$projlist) {
3158                my (@aa) = git_get_last_activity($pr->{'path'});
3159                unless (@aa) {
3160                        next;
3161                }
3162                ($pr->{'age'}, $pr->{'age_string'}) = @aa;
3163                if (!defined $pr->{'descr'}) {
3164                        my $descr = git_get_project_description($pr->{'path'}) || "";
3165                        $pr->{'descr_long'} = to_utf8($descr);
3166                        $pr->{'descr'} = chop_str($descr, 25, 5);
3167                }
3168                if (!defined $pr->{'owner'}) {
3169                        $pr->{'owner'} = get_file_owner("$projectroot/$pr->{'path'}") || "";
3170                }
3171                if ($check_forks) {
3172                        my $pname = $pr->{'path'};
3173                        if (($pname =~ s/\.git$//) &&
3174                            ($pname !~ /\/$/) &&
3175                            (-d "$projectroot/$pname")) {
3176                                $pr->{'forks'} = "-d $projectroot/$pname";
3177                        }
3178                        else {
3179                                $pr->{'forks'} = 0;
3180                        }
3181                }
3182                push @projects, $pr;
3183        }
3184
3185        $order ||= $default_projects_order;
3186        $from = 0 unless defined $from;
3187        $to = $#projects if (!defined $to || $#projects < $to);
3188
3189        print "<table class=\"project_list\">\n";
3190        unless ($no_header) {
3191                print "<tr>\n";
3192                if ($check_forks) {
3193                        print "<th></th>\n";
3194                }
3195                if ($order eq "project") {
3196                        @projects = sort {$a->{'path'} cmp $b->{'path'}} @projects;
3197                        print "<th>Project</th>\n";
3198                } else {
3199                        print "<th>" .
3200                              $cgi->a({-href => href(project=>undef, order=>'project'),
3201                                       -class => "header"}, "Project") .
3202                              "</th>\n";
3203                }
3204                if ($order eq "descr") {
3205                        @projects = sort {$a->{'descr'} cmp $b->{'descr'}} @projects;
3206                        print "<th>Description</th>\n";
3207                } else {
3208                        print "<th>" .
3209                              $cgi->a({-href => href(project=>undef, order=>'descr'),
3210                                       -class => "header"}, "Description") .
3211                              "</th>\n";
3212                }
3213                if ($order eq "owner") {
3214                        @projects = sort {$a->{'owner'} cmp $b->{'owner'}} @projects;
3215                        print "<th>Owner</th>\n";
3216                } else {
3217                        print "<th>" .
3218                              $cgi->a({-href => href(project=>undef, order=>'owner'),
3219                                       -class => "header"}, "Owner") .
3220                              "</th>\n";
3221                }
3222                if ($order eq "age") {
3223                        @projects = sort {$a->{'age'} <=> $b->{'age'}} @projects;
3224                        print "<th>Last Change</th>\n";
3225                } else {
3226                        print "<th>" .
3227                              $cgi->a({-href => href(project=>undef, order=>'age'),
3228                                       -class => "header"}, "Last Change") .
3229                              "</th>\n";
3230                }
3231                print "<th></th>\n" .
3232                      "</tr>\n";
3233        }
3234        my $alternate = 1;
3235        for (my $i = $from; $i <= $to; $i++) {
3236                my $pr = $projects[$i];
3237                if ($alternate) {
3238                        print "<tr class=\"dark\">\n";
3239                } else {
3240                        print "<tr class=\"light\">\n";
3241                }
3242                $alternate ^= 1;
3243                if ($check_forks) {
3244                        print "<td>";
3245                        if ($pr->{'forks'}) {
3246                                print "<!-- $pr->{'forks'} -->\n";
3247                                print $cgi->a({-href => href(project=>$pr->{'path'}, action=>"forks")}, "+");
3248                        }
3249                        print "</td>\n";
3250                }
3251                print "<td>" . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary"),
3252                                        -class => "list"}, esc_html($pr->{'path'})) . "</td>\n" .
3253                      "<td>" . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary"),
3254                                        -class => "list", -title => $pr->{'descr_long'}},
3255                                        esc_html($pr->{'descr'})) . "</td>\n" .
3256                      "<td><i>" . chop_str($pr->{'owner'}, 15) . "</i></td>\n";
3257                print "<td class=\"". age_class($pr->{'age'}) . "\">" .
3258                      (defined $pr->{'age_string'} ? $pr->{'age_string'} : "No commits") . "</td>\n" .
3259                      "<td class=\"link\">" .
3260                      $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary")}, "summary")   . " | " .
3261                      $cgi->a({-href => href(project=>$pr->{'path'}, action=>"shortlog")}, "shortlog") . " | " .
3262                      $cgi->a({-href => href(project=>$pr->{'path'}, action=>"log")}, "log") . " | " .
3263                      $cgi->a({-href => href(project=>$pr->{'path'}, action=>"tree")}, "tree") .
3264                      ($pr->{'forks'} ? " | " . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"forks")}, "forks") : '') .
3265                      "</td>\n" .
3266                      "</tr>\n";
3267        }
3268        if (defined $extra) {
3269                print "<tr>\n";
3270                if ($check_forks) {
3271                        print "<td></td>\n";
3272                }
3273                print "<td colspan=\"5\">$extra</td>\n" .
3274                      "</tr>\n";
3275        }
3276        print "</table>\n";
3277}
3278
3279sub git_shortlog_body {
3280        # uses global variable $project
3281        my ($commitlist, $from, $to, $refs, $extra) = @_;
3282
3283        my $have_snapshot = gitweb_have_snapshot();
3284
3285        $from = 0 unless defined $from;
3286        $to = $#{$commitlist} if (!defined $to || $#{$commitlist} < $to);
3287
3288        print "<table class=\"shortlog\" cellspacing=\"0\">\n";
3289        my $alternate = 1;
3290        for (my $i = $from; $i <= $to; $i++) {
3291                my %co = %{$commitlist->[$i]};
3292                my $commit = $co{'id'};
3293                my $ref = format_ref_marker($refs, $commit);
3294                if ($alternate) {
3295                        print "<tr class=\"dark\">\n";
3296                } else {
3297                        print "<tr class=\"light\">\n";
3298                }
3299                $alternate ^= 1;
3300                # git_summary() used print "<td><i>$co{'age_string'}</i></td>\n" .
3301                print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
3302                      "<td><i>" . esc_html(chop_str($co{'author_name'}, 10)) . "</i></td>\n" .
3303                      "<td>";
3304                print format_subject_html($co{'title'}, $co{'title_short'},
3305                                          href(action=>"commit", hash=>$commit), $ref);
3306                print "</td>\n" .
3307                      "<td class=\"link\">" .
3308                      $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") . " | " .
3309                      $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") . " | " .
3310                      $cgi->a({-href => href(action=>"tree", hash=>$commit, hash_base=>$commit)}, "tree");
3311                if ($have_snapshot) {
3312                        print " | " . $cgi->a({-href => href(action=>"snapshot", hash=>$commit)}, "snapshot");
3313                }
3314                print "</td>\n" .
3315                      "</tr>\n";
3316        }
3317        if (defined $extra) {
3318                print "<tr>\n" .
3319                      "<td colspan=\"4\">$extra</td>\n" .
3320                      "</tr>\n";
3321        }
3322        print "</table>\n";
3323}
3324
3325sub git_history_body {
3326        # Warning: assumes constant type (blob or tree) during history
3327        my ($commitlist, $from, $to, $refs, $hash_base, $ftype, $extra) = @_;
3328
3329        $from = 0 unless defined $from;
3330        $to = $#{$commitlist} unless (defined $to && $to <= $#{$commitlist});
3331
3332        print "<table class=\"history\" cellspacing=\"0\">\n";
3333        my $alternate = 1;
3334        for (my $i = $from; $i <= $to; $i++) {
3335                my %co = %{$commitlist->[$i]};
3336                if (!%co) {
3337                        next;
3338                }
3339                my $commit = $co{'id'};
3340
3341                my $ref = format_ref_marker($refs, $commit);
3342
3343                if ($alternate) {
3344                        print "<tr class=\"dark\">\n";
3345                } else {
3346                        print "<tr class=\"light\">\n";
3347                }
3348                $alternate ^= 1;
3349                print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
3350                      # shortlog uses      chop_str($co{'author_name'}, 10)
3351                      "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 3)) . "</i></td>\n" .
3352                      "<td>";
3353                # originally git_history used chop_str($co{'title'}, 50)
3354                print format_subject_html($co{'title'}, $co{'title_short'},
3355                                          href(action=>"commit", hash=>$commit), $ref);
3356                print "</td>\n" .
3357                      "<td class=\"link\">" .
3358                      $cgi->a({-href => href(action=>$ftype, hash_base=>$commit, file_name=>$file_name)}, $ftype) . " | " .
3359                      $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff");
3360
3361                if ($ftype eq 'blob') {
3362                        my $blob_current = git_get_hash_by_path($hash_base, $file_name);
3363                        my $blob_parent  = git_get_hash_by_path($commit, $file_name);
3364                        if (defined $blob_current && defined $blob_parent &&
3365                                        $blob_current ne $blob_parent) {
3366                                print " | " .
3367                                        $cgi->a({-href => href(action=>"blobdiff",
3368                                                               hash=>$blob_current, hash_parent=>$blob_parent,
3369                                                               hash_base=>$hash_base, hash_parent_base=>$commit,
3370                                                               file_name=>$file_name)},
3371                                                "diff to current");
3372                        }
3373                }
3374                print "</td>\n" .
3375                      "</tr>\n";
3376        }
3377        if (defined $extra) {
3378                print "<tr>\n" .
3379                      "<td colspan=\"4\">$extra</td>\n" .
3380                      "</tr>\n";
3381        }
3382        print "</table>\n";
3383}
3384
3385sub git_tags_body {
3386        # uses global variable $project
3387        my ($taglist, $from, $to, $extra) = @_;
3388        $from = 0 unless defined $from;
3389        $to = $#{$taglist} if (!defined $to || $#{$taglist} < $to);
3390
3391        print "<table class=\"tags\" cellspacing=\"0\">\n";
3392        my $alternate = 1;
3393        for (my $i = $from; $i <= $to; $i++) {
3394                my $entry = $taglist->[$i];
3395                my %tag = %$entry;
3396                my $comment = $tag{'subject'};
3397                my $comment_short;
3398                if (defined $comment) {
3399                        $comment_short = chop_str($comment, 30, 5);
3400                }
3401                if ($alternate) {
3402                        print "<tr class=\"dark\">\n";
3403                } else {
3404                        print "<tr class=\"light\">\n";
3405                }
3406                $alternate ^= 1;
3407                if (defined $tag{'age'}) {
3408                        print "<td><i>$tag{'age'}</i></td>\n";
3409                } else {
3410                        print "<td></td>\n";
3411                }
3412                print "<td>" .
3413                      $cgi->a({-href => href(action=>$tag{'reftype'}, hash=>$tag{'refid'}),
3414                               -class => "list name"}, esc_html($tag{'name'})) .
3415                      "</td>\n" .
3416                      "<td>";
3417                if (defined $comment) {
3418                        print format_subject_html($comment, $comment_short,
3419                                                  href(action=>"tag", hash=>$tag{'id'}));
3420                }
3421                print "</td>\n" .
3422                      "<td class=\"selflink\">";
3423                if ($tag{'type'} eq "tag") {
3424                        print $cgi->a({-href => href(action=>"tag", hash=>$tag{'id'})}, "tag");
3425                } else {
3426                        print "&nbsp;";
3427                }
3428                print "</td>\n" .
3429                      "<td class=\"link\">" . " | " .
3430                      $cgi->a({-href => href(action=>$tag{'reftype'}, hash=>$tag{'refid'})}, $tag{'reftype'});
3431                if ($tag{'reftype'} eq "commit") {
3432                        print " | " . $cgi->a({-href => href(action=>"shortlog", hash=>$tag{'name'})}, "shortlog") .
3433                              " | " . $cgi->a({-href => href(action=>"log", hash=>$tag{'name'})}, "log");
3434                } elsif ($tag{'reftype'} eq "blob") {
3435                        print " | " . $cgi->a({-href => href(action=>"blob_plain", hash=>$tag{'refid'})}, "raw");
3436                }
3437                print "</td>\n" .
3438                      "</tr>";
3439        }
3440        if (defined $extra) {
3441                print "<tr>\n" .
3442                      "<td colspan=\"5\">$extra</td>\n" .
3443                      "</tr>\n";
3444        }
3445        print "</table>\n";
3446}
3447
3448sub git_heads_body {
3449        # uses global variable $project
3450        my ($headlist, $head, $from, $to, $extra) = @_;
3451        $from = 0 unless defined $from;
3452        $to = $#{$headlist} if (!defined $to || $#{$headlist} < $to);
3453
3454        print "<table class=\"heads\" cellspacing=\"0\">\n";
3455        my $alternate = 1;
3456        for (my $i = $from; $i <= $to; $i++) {
3457                my $entry = $headlist->[$i];
3458                my %ref = %$entry;
3459                my $curr = $ref{'id'} eq $head;
3460                if ($alternate) {
3461                        print "<tr class=\"dark\">\n";
3462                } else {
3463                        print "<tr class=\"light\">\n";
3464                }
3465                $alternate ^= 1;
3466                print "<td><i>$ref{'age'}</i></td>\n" .
3467                      ($curr ? "<td class=\"current_head\">" : "<td>") .
3468                      $cgi->a({-href => href(action=>"shortlog", hash=>$ref{'name'}),
3469                               -class => "list name"},esc_html($ref{'name'})) .
3470                      "</td>\n" .
3471                      "<td class=\"link\">" .
3472                      $cgi->a({-href => href(action=>"shortlog", hash=>$ref{'name'})}, "shortlog") . " | " .
3473                      $cgi->a({-href => href(action=>"log", hash=>$ref{'name'})}, "log") . " | " .
3474                      $cgi->a({-href => href(action=>"tree", hash=>$ref{'name'}, hash_base=>$ref{'name'})}, "tree") .
3475                      "</td>\n" .
3476                      "</tr>";
3477        }
3478        if (defined $extra) {
3479                print "<tr>\n" .
3480                      "<td colspan=\"3\">$extra</td>\n" .
3481                      "</tr>\n";
3482        }
3483        print "</table>\n";
3484}
3485
3486sub git_search_grep_body {
3487        my ($commitlist, $from, $to, $extra) = @_;
3488        $from = 0 unless defined $from;
3489        $to = $#{$commitlist} if (!defined $to || $#{$commitlist} < $to);
3490
3491        print "<table class=\"grep\" cellspacing=\"0\">\n";
3492        my $alternate = 1;
3493        for (my $i = $from; $i <= $to; $i++) {
3494                my %co = %{$commitlist->[$i]};
3495                if (!%co) {
3496                        next;
3497                }
3498                my $commit = $co{'id'};
3499                if ($alternate) {
3500                        print "<tr class=\"dark\">\n";
3501                } else {
3502                        print "<tr class=\"light\">\n";
3503                }
3504                $alternate ^= 1;
3505                print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
3506                      "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 5)) . "</i></td>\n" .
3507                      "<td>" .
3508                      $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}), -class => "list subject"},
3509                               esc_html(chop_str($co{'title'}, 50)) . "<br/>");
3510                my $comment = $co{'comment'};
3511                foreach my $line (@$comment) {
3512                        if ($line =~ m/^(.*)($search_regexp)(.*)$/i) {
3513                                my $lead = esc_html($1) || "";
3514                                $lead = chop_str($lead, 30, 10);
3515                                my $match = esc_html($2) || "";
3516                                my $trail = esc_html($3) || "";
3517                                $trail = chop_str($trail, 30, 10);
3518                                my $text = "$lead<span class=\"match\">$match</span>$trail";
3519                                print chop_str($text, 80, 5) . "<br/>\n";
3520                        }
3521                }
3522                print "</td>\n" .
3523                      "<td class=\"link\">" .
3524                      $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})}, "commit") .
3525                      " | " .
3526                      $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$co{'id'})}, "tree");
3527                print "</td>\n" .
3528                      "</tr>\n";
3529        }
3530        if (defined $extra) {
3531                print "<tr>\n" .
3532                      "<td colspan=\"3\">$extra</td>\n" .
3533                      "</tr>\n";
3534        }
3535        print "</table>\n";
3536}
3537
3538## ======================================================================
3539## ======================================================================
3540## actions
3541
3542sub git_project_list {
3543        my $order = $cgi->param('o');
3544        if (defined $order && $order !~ m/none|project|descr|owner|age/) {
3545                die_error(undef, "Unknown order parameter");
3546        }
3547
3548        my @list = git_get_projects_list();
3549        if (!@list) {
3550                die_error(undef, "No projects found");
3551        }
3552
3553        git_header_html();
3554        if (-f $home_text) {
3555                print "<div class=\"index_include\">\n";
3556                open (my $fd, $home_text);
3557                print <$fd>;
3558                close $fd;
3559                print "</div>\n";
3560        }
3561        git_project_list_body(\@list, $order);
3562        git_footer_html();
3563}
3564
3565sub git_forks {
3566        my $order = $cgi->param('o');
3567        if (defined $order && $order !~ m/none|project|descr|owner|age/) {
3568                die_error(undef, "Unknown order parameter");
3569        }
3570
3571        my @list = git_get_projects_list($project);
3572        if (!@list) {
3573                die_error(undef, "No forks found");
3574        }
3575
3576        git_header_html();
3577        git_print_page_nav('','');
3578        git_print_header_div('summary', "$project forks");
3579        git_project_list_body(\@list, $order);
3580        git_footer_html();
3581}
3582
3583sub git_project_index {
3584        my @projects = git_get_projects_list($project);
3585
3586        print $cgi->header(
3587                -type => 'text/plain',
3588                -charset => 'utf-8',
3589                -content_disposition => 'inline; filename="index.aux"');
3590
3591        foreach my $pr (@projects) {
3592                if (!exists $pr->{'owner'}) {
3593                        $pr->{'owner'} = get_file_owner("$projectroot/$pr->{'path'}");
3594                }
3595
3596                my ($path, $owner) = ($pr->{'path'}, $pr->{'owner'});
3597                # quote as in CGI::Util::encode, but keep the slash, and use '+' for ' '
3598                $path  =~ s/([^a-zA-Z0-9_.\-\/ ])/sprintf("%%%02X", ord($1))/eg;
3599                $owner =~ s/([^a-zA-Z0-9_.\-\/ ])/sprintf("%%%02X", ord($1))/eg;
3600                $path  =~ s/ /\+/g;
3601                $owner =~ s/ /\+/g;
3602
3603                print "$path $owner\n";
3604        }
3605}
3606
3607sub git_summary {
3608        my $descr = git_get_project_description($project) || "none";
3609        my %co = parse_commit("HEAD");
3610        my %cd = %co ? parse_date($co{'committer_epoch'}, $co{'committer_tz'}) : ();
3611        my $head = $co{'id'};
3612
3613        my $owner = git_get_project_owner($project);
3614
3615        my $refs = git_get_references();
3616        # These get_*_list functions return one more to allow us to see if
3617        # there are more ...
3618        my @taglist  = git_get_tags_list(16);
3619        my @headlist = git_get_heads_list(16);
3620        my @forklist;
3621        my ($check_forks) = gitweb_check_feature('forks');
3622
3623        if ($check_forks) {
3624                @forklist = git_get_projects_list($project);
3625        }
3626
3627        git_header_html();
3628        git_print_page_nav('summary','', $head);
3629
3630        print "<div class=\"title\">&nbsp;</div>\n";
3631        print "<table cellspacing=\"0\">\n" .
3632              "<tr><td>description</td><td>" . esc_html($descr) . "</td></tr>\n" .
3633              "<tr><td>owner</td><td>$owner</td></tr>\n";
3634        if (defined $cd{'rfc2822'}) {
3635                print "<tr><td>last change</td><td>$cd{'rfc2822'}</td></tr>\n";
3636        }
3637
3638        # use per project git URL list in $projectroot/$project/cloneurl
3639        # or make project git URL from git base URL and project name
3640        my $url_tag = "URL";
3641        my @url_list = git_get_project_url_list($project);
3642        @url_list = map { "$_/$project" } @git_base_url_list unless @url_list;
3643        foreach my $git_url (@url_list) {
3644                next unless $git_url;
3645                print "<tr><td>$url_tag</td><td>$git_url</td></tr>\n";
3646                $url_tag = "";
3647        }
3648        print "</table>\n";
3649
3650        if (-s "$projectroot/$project/README.html") {
3651                if (open my $fd, "$projectroot/$project/README.html") {
3652                        print "<div class=\"title\">readme</div>\n";
3653                        print $_ while (<$fd>);
3654                        close $fd;
3655                }
3656        }
3657
3658        # we need to request one more than 16 (0..15) to check if
3659        # those 16 are all
3660        my @commitlist = $head ? parse_commits($head, 17) : ();
3661        if (@commitlist) {
3662                git_print_header_div('shortlog');
3663                git_shortlog_body(\@commitlist, 0, 15, $refs,
3664                                  $#commitlist <=  15 ? undef :
3665                                  $cgi->a({-href => href(action=>"shortlog")}, "..."));
3666        }
3667
3668        if (@taglist) {
3669                git_print_header_div('tags');
3670                git_tags_body(\@taglist, 0, 15,
3671                              $#taglist <=  15 ? undef :
3672                              $cgi->a({-href => href(action=>"tags")}, "..."));
3673        }
3674
3675        if (@headlist) {
3676                git_print_header_div('heads');
3677                git_heads_body(\@headlist, $head, 0, 15,
3678                               $#headlist <= 15 ? undef :
3679                               $cgi->a({-href => href(action=>"heads")}, "..."));
3680        }
3681
3682        if (@forklist) {
3683                git_print_header_div('forks');
3684                git_project_list_body(\@forklist, undef, 0, 15,
3685                                      $#forklist <= 15 ? undef :
3686                                      $cgi->a({-href => href(action=>"forks")}, "..."),
3687                                      'noheader');
3688        }
3689
3690        git_footer_html();
3691}
3692
3693sub git_tag {
3694        my $head = git_get_head_hash($project);
3695        git_header_html();
3696        git_print_page_nav('','', $head,undef,$head);
3697        my %tag = parse_tag($hash);
3698
3699        if (! %tag) {
3700                die_error(undef, "Unknown tag object");
3701        }
3702
3703        git_print_header_div('commit', esc_html($tag{'name'}), $hash);
3704        print "<div class=\"title_text\">\n" .
3705              "<table cellspacing=\"0\">\n" .
3706              "<tr>\n" .
3707              "<td>object</td>\n" .
3708              "<td>" . $cgi->a({-class => "list", -href => href(action=>$tag{'type'}, hash=>$tag{'object'})},
3709                               $tag{'object'}) . "</td>\n" .
3710              "<td class=\"link\">" . $cgi->a({-href => href(action=>$tag{'type'}, hash=>$tag{'object'})},
3711                                              $tag{'type'}) . "</td>\n" .
3712              "</tr>\n";
3713        if (defined($tag{'author'})) {
3714                my %ad = parse_date($tag{'epoch'}, $tag{'tz'});
3715                print "<tr><td>author</td><td>" . esc_html($tag{'author'}) . "</td></tr>\n";
3716                print "<tr><td></td><td>" . $ad{'rfc2822'} .
3717                        sprintf(" (%02d:%02d %s)", $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'}) .
3718                        "</td></tr>\n";
3719        }
3720        print "</table>\n\n" .
3721              "</div>\n";
3722        print "<div class=\"page_body\">";
3723        my $comment = $tag{'comment'};
3724        foreach my $line (@$comment) {
3725                chomp $line;
3726                print esc_html($line, -nbsp=>1) . "<br/>\n";
3727        }
3728        print "</div>\n";
3729        git_footer_html();
3730}
3731
3732sub git_blame2 {
3733        my $fd;
3734        my $ftype;
3735
3736        my ($have_blame) = gitweb_check_feature('blame');
3737        if (!$have_blame) {
3738                die_error('403 Permission denied', "Permission denied");
3739        }
3740        die_error('404 Not Found', "File name not defined") if (!$file_name);
3741        $hash_base ||= git_get_head_hash($project);
3742        die_error(undef, "Couldn't find base commit") unless ($hash_base);
3743        my %co = parse_commit($hash_base)
3744                or die_error(undef, "Reading commit failed");
3745        if (!defined $hash) {
3746                $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
3747                        or die_error(undef, "Error looking up file");
3748        }
3749        $ftype = git_get_type($hash);
3750        if ($ftype !~ "blob") {
3751                die_error('400 Bad Request', "Object is not a blob");
3752        }
3753        open ($fd, "-|", git_cmd(), "blame", '-p', '--',
3754              $file_name, $hash_base)
3755                or die_error(undef, "Open git-blame failed");
3756        git_header_html();
3757        my $formats_nav =
3758                $cgi->a({-href => href(action=>"blob", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
3759                        "blob") .
3760                " | " .
3761                $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
3762                        "history") .
3763                " | " .
3764                $cgi->a({-href => href(action=>"blame", file_name=>$file_name)},
3765                        "HEAD");
3766        git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
3767        git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
3768        git_print_page_path($file_name, $ftype, $hash_base);
3769        my @rev_color = (qw(light2 dark2));
3770        my $num_colors = scalar(@rev_color);
3771        my $current_color = 0;
3772        my $last_rev;
3773        print <<HTML;
3774<div class="page_body">
3775<table class="blame">
3776<tr><th>Commit</th><th>Line</th><th>Data</th></tr>
3777HTML
3778        my %metainfo = ();
3779        while (1) {
3780                $_ = <$fd>;
3781                last unless defined $_;
3782                my ($full_rev, $orig_lineno, $lineno, $group_size) =
3783                    /^([0-9a-f]{40}) (\d+) (\d+)(?: (\d+))?$/;
3784                if (!exists $metainfo{$full_rev}) {
3785                        $metainfo{$full_rev} = {};
3786                }
3787                my $meta = $metainfo{$full_rev};
3788                while (<$fd>) {
3789                        last if (s/^\t//);
3790                        if (/^(\S+) (.*)$/) {
3791                                $meta->{$1} = $2;
3792                        }
3793                }
3794                my $data = $_;
3795                chomp $data;
3796                my $rev = substr($full_rev, 0, 8);
3797                my $author = $meta->{'author'};
3798                my %date = parse_date($meta->{'author-time'},
3799                                      $meta->{'author-tz'});
3800                my $date = $date{'iso-tz'};
3801                if ($group_size) {
3802                        $current_color = ++$current_color % $num_colors;
3803                }
3804                print "<tr class=\"$rev_color[$current_color]\">\n";
3805                if ($group_size) {
3806                        print "<td class=\"sha1\"";
3807                        print " title=\"". esc_html($author) . ", $date\"";
3808                        print " rowspan=\"$group_size\"" if ($group_size > 1);
3809                        print ">";
3810                        print $cgi->a({-href => href(action=>"commit",
3811                                                     hash=>$full_rev,
3812                                                     file_name=>$file_name)},
3813                                      esc_html($rev));
3814                        print "</td>\n";
3815                }
3816                open (my $dd, "-|", git_cmd(), "rev-parse", "$full_rev^")
3817                        or die_error(undef, "Open git-rev-parse failed");
3818                my $parent_commit = <$dd>;
3819                close $dd;
3820                chomp($parent_commit);
3821                my $blamed = href(action => 'blame',
3822                                  file_name => $meta->{'filename'},
3823                                  hash_base => $parent_commit);
3824                print "<td class=\"linenr\">";
3825                print $cgi->a({ -href => "$blamed#l$orig_lineno",
3826                                -id => "l$lineno",
3827                                -class => "linenr" },
3828                              esc_html($lineno));
3829                print "</td>";
3830                print "<td class=\"pre\">" . esc_html($data) . "</td>\n";
3831                print "</tr>\n";
3832        }
3833        print "</table>\n";
3834        print "</div>";
3835        close $fd
3836                or print "Reading blob failed\n";
3837        git_footer_html();
3838}
3839
3840sub git_blame {
3841        my $fd;
3842
3843        my ($have_blame) = gitweb_check_feature('blame');
3844        if (!$have_blame) {
3845                die_error('403 Permission denied', "Permission denied");
3846        }
3847        die_error('404 Not Found', "File name not defined") if (!$file_name);
3848        $hash_base ||= git_get_head_hash($project);
3849        die_error(undef, "Couldn't find base commit") unless ($hash_base);
3850        my %co = parse_commit($hash_base)
3851                or die_error(undef, "Reading commit failed");
3852        if (!defined $hash) {
3853                $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
3854                        or die_error(undef, "Error lookup file");
3855        }
3856        open ($fd, "-|", git_cmd(), "annotate", '-l', '-t', '-r', $file_name, $hash_base)
3857                or die_error(undef, "Open git-annotate failed");
3858        git_header_html();
3859        my $formats_nav =
3860                $cgi->a({-href => href(action=>"blob", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
3861                        "blob") .
3862                " | " .
3863                $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
3864                        "history") .
3865                " | " .
3866                $cgi->a({-href => href(action=>"blame", file_name=>$file_name)},
3867                        "HEAD");
3868        git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
3869        git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
3870        git_print_page_path($file_name, 'blob', $hash_base);
3871        print "<div class=\"page_body\">\n";
3872        print <<HTML;
3873<table class="blame">
3874  <tr>
3875    <th>Commit</th>
3876    <th>Age</th>
3877    <th>Author</th>
3878    <th>Line</th>
3879    <th>Data</th>
3880  </tr>
3881HTML
3882        my @line_class = (qw(light dark));
3883        my $line_class_len = scalar (@line_class);
3884        my $line_class_num = $#line_class;
3885        while (my $line = <$fd>) {
3886                my $long_rev;
3887                my $short_rev;
3888                my $author;
3889                my $time;
3890                my $lineno;
3891                my $data;
3892                my $age;
3893                my $age_str;
3894                my $age_class;
3895
3896                chomp $line;
3897                $line_class_num = ($line_class_num + 1) % $line_class_len;
3898
3899                if ($line =~ m/^([0-9a-fA-F]{40})\t\(\s*([^\t]+)\t(\d+) [+-]\d\d\d\d\t(\d+)\)(.*)$/) {
3900                        $long_rev = $1;
3901                        $author   = $2;
3902                        $time     = $3;
3903                        $lineno   = $4;
3904                        $data     = $5;
3905                } else {
3906                        print qq(  <tr><td colspan="5" class="error">Unable to parse: $line</td></tr>\n);
3907                        next;
3908                }
3909                $short_rev  = substr ($long_rev, 0, 8);
3910                $age        = time () - $time;
3911                $age_str    = age_string ($age);
3912                $age_str    =~ s/ /&nbsp;/g;
3913                $age_class  = age_class($age);
3914                $author     = esc_html ($author);
3915                $author     =~ s/ /&nbsp;/g;
3916
3917                $data = untabify($data);
3918                $data = esc_html ($data);
3919
3920                print <<HTML;
3921  <tr class="$line_class[$line_class_num]">
3922    <td class="sha1"><a href="${\href (action=>"commit", hash=>$long_rev)}" class="text">$short_rev..</a></td>
3923    <td class="$age_class">$age_str</td>
3924    <td>$author</td>
3925    <td class="linenr"><a id="$lineno" href="#$lineno" class="linenr">$lineno</a></td>
3926    <td class="pre">$data</td>
3927  </tr>
3928HTML
3929        } # while (my $line = <$fd>)
3930        print "</table>\n\n";
3931        close $fd
3932                or print "Reading blob failed.\n";
3933        print "</div>";
3934        git_footer_html();
3935}
3936
3937sub git_tags {
3938        my $head = git_get_head_hash($project);
3939        git_header_html();
3940        git_print_page_nav('','', $head,undef,$head);
3941        git_print_header_div('summary', $project);
3942
3943        my @tagslist = git_get_tags_list();
3944        if (@tagslist) {
3945                git_tags_body(\@tagslist);
3946        }
3947        git_footer_html();
3948}
3949
3950sub git_heads {
3951        my $head = git_get_head_hash($project);
3952        git_header_html();
3953        git_print_page_nav('','', $head,undef,$head);
3954        git_print_header_div('summary', $project);
3955
3956        my @headslist = git_get_heads_list();
3957        if (@headslist) {
3958                git_heads_body(\@headslist, $head);
3959        }
3960        git_footer_html();
3961}
3962
3963sub git_blob_plain {
3964        my $expires;
3965
3966        if (!defined $hash) {
3967                if (defined $file_name) {
3968                        my $base = $hash_base || git_get_head_hash($project);
3969                        $hash = git_get_hash_by_path($base, $file_name, "blob")
3970                                or die_error(undef, "Error lookup file");
3971                } else {
3972                        die_error(undef, "No file name defined");
3973                }
3974        } elsif ($hash =~ m/^[0-9a-fA-F]{40}$/) {
3975                # blobs defined by non-textual hash id's can be cached
3976                $expires = "+1d";
3977        }
3978
3979        my $type = shift;
3980        open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
3981                or die_error(undef, "Couldn't cat $file_name, $hash");
3982
3983        $type ||= blob_mimetype($fd, $file_name);
3984
3985        # save as filename, even when no $file_name is given
3986        my $save_as = "$hash";
3987        if (defined $file_name) {
3988                $save_as = $file_name;
3989        } elsif ($type =~ m/^text\//) {
3990                $save_as .= '.txt';
3991        }
3992
3993        print $cgi->header(
3994                -type => "$type",
3995                -expires=>$expires,
3996                -content_disposition => 'inline; filename="' . "$save_as" . '"');
3997        undef $/;
3998        binmode STDOUT, ':raw';
3999        print <$fd>;
4000        binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
4001        $/ = "\n";
4002        close $fd;
4003}
4004
4005sub git_blob {
4006        my $expires;
4007
4008        if (!defined $hash) {
4009                if (defined $file_name) {
4010                        my $base = $hash_base || git_get_head_hash($project);
4011                        $hash = git_get_hash_by_path($base, $file_name, "blob")
4012                                or die_error(undef, "Error lookup file");
4013                } else {
4014                        die_error(undef, "No file name defined");
4015                }
4016        } elsif ($hash =~ m/^[0-9a-fA-F]{40}$/) {
4017                # blobs defined by non-textual hash id's can be cached
4018                $expires = "+1d";
4019        }
4020
4021        my ($have_blame) = gitweb_check_feature('blame');
4022        open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
4023                or die_error(undef, "Couldn't cat $file_name, $hash");
4024        my $mimetype = blob_mimetype($fd, $file_name);
4025        if ($mimetype !~ m!^(?:text/|image/(?:gif|png|jpeg)$)!) {
4026                close $fd;
4027                return git_blob_plain($mimetype);
4028        }
4029        # we can have blame only for text/* mimetype
4030        $have_blame &&= ($mimetype =~ m!^text/!);
4031
4032        git_header_html(undef, $expires);
4033        my $formats_nav = '';
4034        if (defined $hash_base && (my %co = parse_commit($hash_base))) {
4035                if (defined $file_name) {
4036                        if ($have_blame) {
4037                                $formats_nav .=
4038                                        $cgi->a({-href => href(action=>"blame", hash_base=>$hash_base,
4039                                                               hash=>$hash, file_name=>$file_name)},
4040                                                "blame") .
4041                                        " | ";
4042                        }
4043                        $formats_nav .=
4044                                $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
4045                                                       hash=>$hash, file_name=>$file_name)},
4046                                        "history") .
4047                                " | " .
4048                                $cgi->a({-href => href(action=>"blob_plain",
4049                                                       hash=>$hash, file_name=>$file_name)},
4050                                        "raw") .
4051                                " | " .
4052                                $cgi->a({-href => href(action=>"blob",
4053                                                       hash_base=>"HEAD", file_name=>$file_name)},
4054                                        "HEAD");
4055                } else {
4056                        $formats_nav .=
4057                                $cgi->a({-href => href(action=>"blob_plain", hash=>$hash)}, "raw");
4058                }
4059                git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
4060                git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
4061        } else {
4062                print "<div class=\"page_nav\">\n" .
4063                      "<br/><br/></div>\n" .
4064                      "<div class=\"title\">$hash</div>\n";
4065        }
4066        git_print_page_path($file_name, "blob", $hash_base);
4067        print "<div class=\"page_body\">\n";
4068        if ($mimetype =~ m!^text/!) {
4069                my $nr;
4070                while (my $line = <$fd>) {
4071                        chomp $line;
4072                        $nr++;
4073                        $line = untabify($line);
4074                        printf "<div class=\"pre\"><a id=\"l%i\" href=\"#l%i\" class=\"linenr\">%4i</a> %s</div>\n",
4075                               $nr, $nr, $nr, esc_html($line, -nbsp=>1);
4076                }
4077        } elsif ($mimetype =~ m!^image/!) {
4078                print qq!<img type="$mimetype"!;
4079                if ($file_name) {
4080                        print qq! alt="$file_name" title="$file_name"!;
4081                }
4082                print qq! src="! .
4083                      href(action=>"blob_plain", hash=>$hash,
4084                           hash_base=>$hash_base, file_name=>$file_name) .
4085                      qq!" />\n!;
4086        }
4087        close $fd
4088                or print "Reading blob failed.\n";
4089        print "</div>";
4090        git_footer_html();
4091}
4092
4093sub git_tree {
4094        my $have_snapshot = gitweb_have_snapshot();
4095
4096        if (!defined $hash_base) {
4097                $hash_base = "HEAD";
4098        }
4099        if (!defined $hash) {
4100                if (defined $file_name) {
4101                        $hash = git_get_hash_by_path($hash_base, $file_name, "tree");
4102                } else {
4103                        $hash = $hash_base;
4104                }
4105        }
4106        $/ = "\0";
4107        open my $fd, "-|", git_cmd(), "ls-tree", '-z', $hash
4108                or die_error(undef, "Open git-ls-tree failed");
4109        my @entries = map { chomp; $_ } <$fd>;
4110        close $fd or die_error(undef, "Reading tree failed");
4111        $/ = "\n";
4112
4113        my $refs = git_get_references();
4114        my $ref = format_ref_marker($refs, $hash_base);
4115        git_header_html();
4116        my $basedir = '';
4117        my ($have_blame) = gitweb_check_feature('blame');
4118        if (defined $hash_base && (my %co = parse_commit($hash_base))) {
4119                my @views_nav = ();
4120                if (defined $file_name) {
4121                        push @views_nav,
4122                                $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
4123                                                       hash=>$hash, file_name=>$file_name)},
4124                                        "history"),
4125                                $cgi->a({-href => href(action=>"tree",
4126                                                       hash_base=>"HEAD", file_name=>$file_name)},
4127                                        "HEAD"),
4128                }
4129                if ($have_snapshot) {
4130                        # FIXME: Should be available when we have no hash base as well.
4131                        push @views_nav,
4132                                $cgi->a({-href => href(action=>"snapshot", hash=>$hash)},
4133                                        "snapshot");
4134                }
4135                git_print_page_nav('tree','', $hash_base, undef, undef, join(' | ', @views_nav));
4136                git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash_base);
4137        } else {
4138                undef $hash_base;
4139                print "<div class=\"page_nav\">\n";
4140                print "<br/><br/></div>\n";
4141                print "<div class=\"title\">$hash</div>\n";
4142        }
4143        if (defined $file_name) {
4144                $basedir = $file_name;
4145                if ($basedir ne '' && substr($basedir, -1) ne '/') {
4146                        $basedir .= '/';
4147                }
4148        }
4149        git_print_page_path($file_name, 'tree', $hash_base);
4150        print "<div class=\"page_body\">\n";
4151        print "<table cellspacing=\"0\">\n";
4152        my $alternate = 1;
4153        # '..' (top directory) link if possible
4154        if (defined $hash_base &&
4155            defined $file_name && $file_name =~ m![^/]+$!) {
4156                if ($alternate) {
4157                        print "<tr class=\"dark\">\n";
4158                } else {
4159                        print "<tr class=\"light\">\n";
4160                }
4161                $alternate ^= 1;
4162
4163                my $up = $file_name;
4164                $up =~ s!/?[^/]+$!!;
4165                undef $up unless $up;
4166                # based on git_print_tree_entry
4167                print '<td class="mode">' . mode_str('040000') . "</td>\n";
4168                print '<td class="list">';
4169                print $cgi->a({-href => href(action=>"tree", hash_base=>$hash_base,
4170                                             file_name=>$up)},
4171                              "..");
4172                print "</td>\n";
4173                print "<td class=\"link\"></td>\n";
4174
4175                print "</tr>\n";
4176        }
4177        foreach my $line (@entries) {
4178                my %t = parse_ls_tree_line($line, -z => 1);
4179
4180                if ($alternate) {
4181                        print "<tr class=\"dark\">\n";
4182                } else {
4183                        print "<tr class=\"light\">\n";
4184                }
4185                $alternate ^= 1;
4186
4187                git_print_tree_entry(\%t, $basedir, $hash_base, $have_blame);
4188
4189                print "</tr>\n";
4190        }
4191        print "</table>\n" .
4192              "</div>";
4193        git_footer_html();
4194}
4195
4196sub git_snapshot {
4197        my ($ctype, $suffix, $command) = gitweb_check_feature('snapshot');
4198        my $have_snapshot = (defined $ctype && defined $suffix);
4199        if (!$have_snapshot) {
4200                die_error('403 Permission denied', "Permission denied");
4201        }
4202
4203        if (!defined $hash) {
4204                $hash = git_get_head_hash($project);
4205        }
4206
4207        my $git = git_cmd_str();
4208        my $name = $project;
4209        $name =~ s,([^/])/*\.git$,$1,;
4210        $name = basename($name);
4211        my $filename = to_utf8($name);
4212        $name =~ s/\047/\047\\\047\047/g;
4213        my $cmd;
4214        if ($suffix eq 'zip') {
4215                $filename .= "-$hash.$suffix";
4216                $cmd = "$git archive --format=zip --prefix=\'$name\'/ $hash";
4217        } else {
4218                $filename .= "-$hash.tar.$suffix";
4219                $cmd = "$git archive --format=tar --prefix=\'$name\'/ $hash | $command";
4220        }
4221
4222        print $cgi->header(
4223                -type => "application/$ctype",
4224                -content_disposition => 'inline; filename="' . "$filename" . '"',
4225                -status => '200 OK');
4226
4227        open my $fd, "-|", $cmd
4228                or die_error(undef, "Execute git-archive failed");
4229        binmode STDOUT, ':raw';
4230        print <$fd>;
4231        binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
4232        close $fd;
4233
4234}
4235
4236sub git_log {
4237        my $head = git_get_head_hash($project);
4238        if (!defined $hash) {
4239                $hash = $head;
4240        }
4241        if (!defined $page) {
4242                $page = 0;
4243        }
4244        my $refs = git_get_references();
4245
4246        my @commitlist = parse_commits($hash, 101, (100 * $page));
4247
4248        my $paging_nav = format_paging_nav('log', $hash, $head, $page, (100 * ($page+1)));
4249
4250        git_header_html();
4251        git_print_page_nav('log','', $hash,undef,undef, $paging_nav);
4252
4253        if (!@commitlist) {
4254                my %co = parse_commit($hash);
4255
4256                git_print_header_div('summary', $project);
4257                print "<div class=\"page_body\"> Last change $co{'age_string'}.<br/><br/></div>\n";
4258        }
4259        my $to = ($#commitlist >= 99) ? (99) : ($#commitlist);
4260        for (my $i = 0; $i <= $to; $i++) {
4261                my %co = %{$commitlist[$i]};
4262                next if !%co;
4263                my $commit = $co{'id'};
4264                my $ref = format_ref_marker($refs, $commit);
4265                my %ad = parse_date($co{'author_epoch'});
4266                git_print_header_div('commit',
4267                               "<span class=\"age\">$co{'age_string'}</span>" .
4268                               esc_html($co{'title'}) . $ref,
4269                               $commit);
4270                print "<div class=\"title_text\">\n" .
4271                      "<div class=\"log_link\">\n" .
4272                      $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") .
4273                      " | " .
4274                      $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") .
4275                      " | " .
4276                      $cgi->a({-href => href(action=>"tree", hash=>$commit, hash_base=>$commit)}, "tree") .
4277                      "<br/>\n" .
4278                      "</div>\n" .
4279                      "<i>" . esc_html($co{'author_name'}) .  " [$ad{'rfc2822'}]</i><br/>\n" .
4280                      "</div>\n";
4281
4282                print "<div class=\"log_body\">\n";
4283                git_print_log($co{'comment'}, -final_empty_line=> 1);
4284                print "</div>\n";
4285        }
4286        if ($#commitlist >= 100) {
4287                print "<div class=\"page_nav\">\n";
4288                print $cgi->a({-href => href(action=>"log", hash=>$hash, page=>$page+1),
4289                               -accesskey => "n", -title => "Alt-n"}, "next");
4290                print "</div>\n";
4291        }
4292        git_footer_html();
4293}
4294
4295sub git_commit {
4296        $hash ||= $hash_base || "HEAD";
4297        my %co = parse_commit($hash);
4298        if (!%co) {
4299                die_error(undef, "Unknown commit object");
4300        }
4301        my %ad = parse_date($co{'author_epoch'}, $co{'author_tz'});
4302        my %cd = parse_date($co{'committer_epoch'}, $co{'committer_tz'});
4303
4304        my $parent  = $co{'parent'};
4305        my $parents = $co{'parents'}; # listref
4306
4307        # we need to prepare $formats_nav before any parameter munging
4308        my $formats_nav;
4309        if (!defined $parent) {
4310                # --root commitdiff
4311                $formats_nav .= '(initial)';
4312        } elsif (@$parents == 1) {
4313                # single parent commit
4314                $formats_nav .=
4315                        '(parent: ' .
4316                        $cgi->a({-href => href(action=>"commit",
4317                                               hash=>$parent)},
4318                                esc_html(substr($parent, 0, 7))) .
4319                        ')';
4320        } else {
4321                # merge commit
4322                $formats_nav .=
4323                        '(merge: ' .
4324                        join(' ', map {
4325                                $cgi->a({-href => href(action=>"commit",
4326                                                       hash=>$_)},
4327                                        esc_html(substr($_, 0, 7)));
4328                        } @$parents ) .
4329                        ')';
4330        }
4331
4332        if (!defined $parent) {
4333                $parent = "--root";
4334        }
4335        my @difftree;
4336        open my $fd, "-|", git_cmd(), "diff-tree", '-r', "--no-commit-id",
4337                @diff_opts,
4338                (@$parents <= 1 ? $parent : '-c'),
4339                $hash, "--"
4340                or die_error(undef, "Open git-diff-tree failed");
4341        @difftree = map { chomp; $_ } <$fd>;
4342        close $fd or die_error(undef, "Reading git-diff-tree failed");
4343
4344        # non-textual hash id's can be cached
4345        my $expires;
4346        if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
4347                $expires = "+1d";
4348        }
4349        my $refs = git_get_references();
4350        my $ref = format_ref_marker($refs, $co{'id'});
4351
4352        my $have_snapshot = gitweb_have_snapshot();
4353
4354        git_header_html(undef, $expires);
4355        git_print_page_nav('commit', '',
4356                           $hash, $co{'tree'}, $hash,
4357                           $formats_nav);
4358
4359        if (defined $co{'parent'}) {
4360                git_print_header_div('commitdiff', esc_html($co{'title'}) . $ref, $hash);
4361        } else {
4362                git_print_header_div('tree', esc_html($co{'title'}) . $ref, $co{'tree'}, $hash);
4363        }
4364        print "<div class=\"title_text\">\n" .
4365              "<table cellspacing=\"0\">\n";
4366        print "<tr><td>author</td><td>" . esc_html($co{'author'}) . "</td></tr>\n".
4367              "<tr>" .
4368              "<td></td><td> $ad{'rfc2822'}";
4369        if ($ad{'hour_local'} < 6) {
4370                printf(" (<span class=\"atnight\">%02d:%02d</span> %s)",
4371                       $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
4372        } else {
4373                printf(" (%02d:%02d %s)",
4374                       $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
4375        }
4376        print "</td>" .
4377              "</tr>\n";
4378        print "<tr><td>committer</td><td>" . esc_html($co{'committer'}) . "</td></tr>\n";
4379        print "<tr><td></td><td> $cd{'rfc2822'}" .
4380              sprintf(" (%02d:%02d %s)", $cd{'hour_local'}, $cd{'minute_local'}, $cd{'tz_local'}) .
4381              "</td></tr>\n";
4382        print "<tr><td>commit</td><td class=\"sha1\">$co{'id'}</td></tr>\n";
4383        print "<tr>" .
4384              "<td>tree</td>" .
4385              "<td class=\"sha1\">" .
4386              $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash),
4387                       class => "list"}, $co{'tree'}) .
4388              "</td>" .
4389              "<td class=\"link\">" .
4390              $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash)},
4391                      "tree");
4392        if ($have_snapshot) {
4393                print " | " .
4394                      $cgi->a({-href => href(action=>"snapshot", hash=>$hash)}, "snapshot");
4395        }
4396        print "</td>" .
4397              "</tr>\n";
4398
4399        foreach my $par (@$parents) {
4400                print "<tr>" .
4401                      "<td>parent</td>" .
4402                      "<td class=\"sha1\">" .
4403                      $cgi->a({-href => href(action=>"commit", hash=>$par),
4404                               class => "list"}, $par) .
4405                      "</td>" .
4406                      "<td class=\"link\">" .
4407                      $cgi->a({-href => href(action=>"commit", hash=>$par)}, "commit") .
4408                      " | " .
4409                      $cgi->a({-href => href(action=>"commitdiff", hash=>$hash, hash_parent=>$par)}, "diff") .
4410                      "</td>" .
4411                      "</tr>\n";
4412        }
4413        print "</table>".
4414              "</div>\n";
4415
4416        print "<div class=\"page_body\">\n";
4417        git_print_log($co{'comment'});
4418        print "</div>\n";
4419
4420        git_difftree_body(\@difftree, $hash, @$parents);
4421
4422        git_footer_html();
4423}
4424
4425sub git_object {
4426        # object is defined by:
4427        # - hash or hash_base alone
4428        # - hash_base and file_name
4429        my $type;
4430
4431        # - hash or hash_base alone
4432        if ($hash || ($hash_base && !defined $file_name)) {
4433                my $object_id = $hash || $hash_base;
4434
4435                my $git_command = git_cmd_str();
4436                open my $fd, "-|", "$git_command cat-file -t $object_id 2>/dev/null"
4437                        or die_error('404 Not Found', "Object does not exist");
4438                $type = <$fd>;
4439                chomp $type;
4440                close $fd
4441                        or die_error('404 Not Found', "Object does not exist");
4442
4443        # - hash_base and file_name
4444        } elsif ($hash_base && defined $file_name) {
4445                $file_name =~ s,/+$,,;
4446
4447                system(git_cmd(), "cat-file", '-e', $hash_base) == 0
4448                        or die_error('404 Not Found', "Base object does not exist");
4449
4450                # here errors should not hapen
4451                open my $fd, "-|", git_cmd(), "ls-tree", $hash_base, "--", $file_name
4452                        or die_error(undef, "Open git-ls-tree failed");
4453                my $line = <$fd>;
4454                close $fd;
4455
4456                #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
4457                unless ($line && $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t/) {
4458                        die_error('404 Not Found', "File or directory for given base does not exist");
4459                }
4460                $type = $2;
4461                $hash = $3;
4462        } else {
4463                die_error('404 Not Found', "Not enough information to find object");
4464        }
4465
4466        print $cgi->redirect(-uri => href(action=>$type, -full=>1,
4467                                          hash=>$hash, hash_base=>$hash_base,
4468                                          file_name=>$file_name),
4469                             -status => '302 Found');
4470}
4471
4472sub git_blobdiff {
4473        my $format = shift || 'html';
4474
4475        my $fd;
4476        my @difftree;
4477        my %diffinfo;
4478        my $expires;
4479
4480        # preparing $fd and %diffinfo for git_patchset_body
4481        # new style URI
4482        if (defined $hash_base && defined $hash_parent_base) {
4483                if (defined $file_name) {
4484                        # read raw output
4485                        open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4486                                $hash_parent_base, $hash_base,
4487                                "--", (defined $file_parent ? $file_parent : ()), $file_name
4488                                or die_error(undef, "Open git-diff-tree failed");
4489                        @difftree = map { chomp; $_ } <$fd>;
4490                        close $fd
4491                                or die_error(undef, "Reading git-diff-tree failed");
4492                        @difftree
4493                                or die_error('404 Not Found', "Blob diff not found");
4494
4495                } elsif (defined $hash &&
4496                         $hash =~ /[0-9a-fA-F]{40}/) {
4497                        # try to find filename from $hash
4498
4499                        # read filtered raw output
4500                        open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4501                                $hash_parent_base, $hash_base, "--"
4502                                or die_error(undef, "Open git-diff-tree failed");
4503                        @difftree =
4504                                # ':100644 100644 03b21826... 3b93d5e7... M     ls-files.c'
4505                                # $hash == to_id
4506                                grep { /^:[0-7]{6} [0-7]{6} [0-9a-fA-F]{40} $hash/ }
4507                                map { chomp; $_ } <$fd>;
4508                        close $fd
4509                                or die_error(undef, "Reading git-diff-tree failed");
4510                        @difftree
4511                                or die_error('404 Not Found', "Blob diff not found");
4512
4513                } else {
4514                        die_error('404 Not Found', "Missing one of the blob diff parameters");
4515                }
4516
4517                if (@difftree > 1) {
4518                        die_error('404 Not Found', "Ambiguous blob diff specification");
4519                }
4520
4521                %diffinfo = parse_difftree_raw_line($difftree[0]);
4522                $file_parent ||= $diffinfo{'from_file'} || $file_name || $diffinfo{'file'};
4523                $file_name   ||= $diffinfo{'to_file'}   || $diffinfo{'file'};
4524
4525                $hash_parent ||= $diffinfo{'from_id'};
4526                $hash        ||= $diffinfo{'to_id'};
4527
4528                # non-textual hash id's can be cached
4529                if ($hash_base =~ m/^[0-9a-fA-F]{40}$/ &&
4530                    $hash_parent_base =~ m/^[0-9a-fA-F]{40}$/) {
4531                        $expires = '+1d';
4532                }
4533
4534                # open patch output
4535                open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4536                        '-p', ($format eq 'html' ? "--full-index" : ()),
4537                        $hash_parent_base, $hash_base,
4538                        "--", (defined $file_parent ? $file_parent : ()), $file_name
4539                        or die_error(undef, "Open git-diff-tree failed");
4540        }
4541
4542        # old/legacy style URI
4543        if (!%diffinfo && # if new style URI failed
4544            defined $hash && defined $hash_parent) {
4545                # fake git-diff-tree raw output
4546                $diffinfo{'from_mode'} = $diffinfo{'to_mode'} = "blob";
4547                $diffinfo{'from_id'} = $hash_parent;
4548                $diffinfo{'to_id'}   = $hash;
4549                if (defined $file_name) {
4550                        if (defined $file_parent) {
4551                                $diffinfo{'status'} = '2';
4552                                $diffinfo{'from_file'} = $file_parent;
4553                                $diffinfo{'to_file'}   = $file_name;
4554                        } else { # assume not renamed
4555                                $diffinfo{'status'} = '1';
4556                                $diffinfo{'from_file'} = $file_name;
4557                                $diffinfo{'to_file'}   = $file_name;
4558                        }
4559                } else { # no filename given
4560                        $diffinfo{'status'} = '2';
4561                        $diffinfo{'from_file'} = $hash_parent;
4562                        $diffinfo{'to_file'}   = $hash;
4563                }
4564
4565                # non-textual hash id's can be cached
4566                if ($hash =~ m/^[0-9a-fA-F]{40}$/ &&
4567                    $hash_parent =~ m/^[0-9a-fA-F]{40}$/) {
4568                        $expires = '+1d';
4569                }
4570
4571                # open patch output
4572                open $fd, "-|", git_cmd(), "diff", @diff_opts,
4573                        '-p', ($format eq 'html' ? "--full-index" : ()),
4574                        $hash_parent, $hash, "--"
4575                        or die_error(undef, "Open git-diff failed");
4576        } else  {
4577                die_error('404 Not Found', "Missing one of the blob diff parameters")
4578                        unless %diffinfo;
4579        }
4580
4581        # header
4582        if ($format eq 'html') {
4583                my $formats_nav =
4584                        $cgi->a({-href => href(action=>"blobdiff_plain",
4585                                               hash=>$hash, hash_parent=>$hash_parent,
4586                                               hash_base=>$hash_base, hash_parent_base=>$hash_parent_base,
4587                                               file_name=>$file_name, file_parent=>$file_parent)},
4588                                "raw");
4589                git_header_html(undef, $expires);
4590                if (defined $hash_base && (my %co = parse_commit($hash_base))) {
4591                        git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
4592                        git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
4593                } else {
4594                        print "<div class=\"page_nav\"><br/>$formats_nav<br/></div>\n";
4595                        print "<div class=\"title\">$hash vs $hash_parent</div>\n";
4596                }
4597                if (defined $file_name) {
4598                        git_print_page_path($file_name, "blob", $hash_base);
4599                } else {
4600                        print "<div class=\"page_path\"></div>\n";
4601                }
4602
4603        } elsif ($format eq 'plain') {
4604                print $cgi->header(
4605                        -type => 'text/plain',
4606                        -charset => 'utf-8',
4607                        -expires => $expires,
4608                        -content_disposition => 'inline; filename="' . "$file_name" . '.patch"');
4609
4610                print "X-Git-Url: " . $cgi->self_url() . "\n\n";
4611
4612        } else {
4613                die_error(undef, "Unknown blobdiff format");
4614        }
4615
4616        # patch
4617        if ($format eq 'html') {
4618                print "<div class=\"page_body\">\n";
4619
4620                git_patchset_body($fd, [ \%diffinfo ], $hash_base, $hash_parent_base);
4621                close $fd;
4622
4623                print "</div>\n"; # class="page_body"
4624                git_footer_html();
4625
4626        } else {
4627                while (my $line = <$fd>) {
4628                        $line =~ s!a/($hash|$hash_parent)!'a/'.esc_path($diffinfo{'from_file'})!eg;
4629                        $line =~ s!b/($hash|$hash_parent)!'b/'.esc_path($diffinfo{'to_file'})!eg;
4630
4631                        print $line;
4632
4633                        last if $line =~ m!^\+\+\+!;
4634                }
4635                local $/ = undef;
4636                print <$fd>;
4637                close $fd;
4638        }
4639}
4640
4641sub git_blobdiff_plain {
4642        git_blobdiff('plain');
4643}
4644
4645sub git_commitdiff {
4646        my $format = shift || 'html';
4647        $hash ||= $hash_base || "HEAD";
4648        my %co = parse_commit($hash);
4649        if (!%co) {
4650                die_error(undef, "Unknown commit object");
4651        }
4652
4653        # choose format for commitdiff for merge
4654        if (! defined $hash_parent && @{$co{'parents'}} > 1) {
4655                $hash_parent = '--cc';
4656        }
4657        # we need to prepare $formats_nav before almost any parameter munging
4658        my $formats_nav;
4659        if ($format eq 'html') {
4660                $formats_nav =
4661                        $cgi->a({-href => href(action=>"commitdiff_plain",
4662                                               hash=>$hash, hash_parent=>$hash_parent)},
4663                                "raw");
4664
4665                if (defined $hash_parent &&
4666                    $hash_parent ne '-c' && $hash_parent ne '--cc') {
4667                        # commitdiff with two commits given
4668                        my $hash_parent_short = $hash_parent;
4669                        if ($hash_parent =~ m/^[0-9a-fA-F]{40}$/) {
4670                                $hash_parent_short = substr($hash_parent, 0, 7);
4671                        }
4672                        $formats_nav .=
4673                                ' (from';
4674                        for (my $i = 0; $i < @{$co{'parents'}}; $i++) {
4675                                if ($co{'parents'}[$i] eq $hash_parent) {
4676                                        $formats_nav .= ' parent ' . ($i+1);
4677                                        last;
4678                                }
4679                        }
4680                        $formats_nav .= ': ' .
4681                                $cgi->a({-href => href(action=>"commitdiff",
4682                                                       hash=>$hash_parent)},
4683                                        esc_html($hash_parent_short)) .
4684                                ')';
4685                } elsif (!$co{'parent'}) {
4686                        # --root commitdiff
4687                        $formats_nav .= ' (initial)';
4688                } elsif (scalar @{$co{'parents'}} == 1) {
4689                        # single parent commit
4690                        $formats_nav .=
4691                                ' (parent: ' .
4692                                $cgi->a({-href => href(action=>"commitdiff",
4693                                                       hash=>$co{'parent'})},
4694                                        esc_html(substr($co{'parent'}, 0, 7))) .
4695                                ')';
4696                } else {
4697                        # merge commit
4698                        if ($hash_parent eq '--cc') {
4699                                $formats_nav .= ' | ' .
4700                                        $cgi->a({-href => href(action=>"commitdiff",
4701                                                               hash=>$hash, hash_parent=>'-c')},
4702                                                'combined');
4703                        } else { # $hash_parent eq '-c'
4704                                $formats_nav .= ' | ' .
4705                                        $cgi->a({-href => href(action=>"commitdiff",
4706                                                               hash=>$hash, hash_parent=>'--cc')},
4707                                                'compact');
4708                        }
4709                        $formats_nav .=
4710                                ' (merge: ' .
4711                                join(' ', map {
4712                                        $cgi->a({-href => href(action=>"commitdiff",
4713                                                               hash=>$_)},
4714                                                esc_html(substr($_, 0, 7)));
4715                                } @{$co{'parents'}} ) .
4716                                ')';
4717                }
4718        }
4719
4720        my $hash_parent_param = $hash_parent;
4721        if (!defined $hash_parent_param) {
4722                # --cc for multiple parents, --root for parentless
4723                $hash_parent_param =
4724                        @{$co{'parents'}} > 1 ? '--cc' : $co{'parent'} || '--root';
4725        }
4726
4727        # read commitdiff
4728        my $fd;
4729        my @difftree;
4730        if ($format eq 'html') {
4731                open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4732                        "--no-commit-id", "--patch-with-raw", "--full-index",
4733                        $hash_parent_param, $hash, "--"
4734                        or die_error(undef, "Open git-diff-tree failed");
4735
4736                while (my $line = <$fd>) {
4737                        chomp $line;
4738                        # empty line ends raw part of diff-tree output
4739                        last unless $line;
4740                        push @difftree, scalar parse_difftree_raw_line($line);
4741                }
4742
4743        } elsif ($format eq 'plain') {
4744                open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4745                        '-p', $hash_parent_param, $hash, "--"
4746                        or die_error(undef, "Open git-diff-tree failed");
4747
4748        } else {
4749                die_error(undef, "Unknown commitdiff format");
4750        }
4751
4752        # non-textual hash id's can be cached
4753        my $expires;
4754        if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
4755                $expires = "+1d";
4756        }
4757
4758        # write commit message
4759        if ($format eq 'html') {
4760                my $refs = git_get_references();
4761                my $ref = format_ref_marker($refs, $co{'id'});
4762
4763                git_header_html(undef, $expires);
4764                git_print_page_nav('commitdiff','', $hash,$co{'tree'},$hash, $formats_nav);
4765                git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash);
4766                git_print_authorship(\%co);
4767                print "<div class=\"page_body\">\n";
4768                if (@{$co{'comment'}} > 1) {
4769                        print "<div class=\"log\">\n";
4770                        git_print_log($co{'comment'}, -final_empty_line=> 1, -remove_title => 1);
4771                        print "</div>\n"; # class="log"
4772                }
4773
4774        } elsif ($format eq 'plain') {
4775                my $refs = git_get_references("tags");
4776                my $tagname = git_get_rev_name_tags($hash);
4777                my $filename = basename($project) . "-$hash.patch";
4778
4779                print $cgi->header(
4780                        -type => 'text/plain',
4781                        -charset => 'utf-8',
4782                        -expires => $expires,
4783                        -content_disposition => 'inline; filename="' . "$filename" . '"');
4784                my %ad = parse_date($co{'author_epoch'}, $co{'author_tz'});
4785                print <<TEXT;
4786From: $co{'author'}
4787Date: $ad{'rfc2822'} ($ad{'tz_local'})
4788Subject: $co{'title'}
4789TEXT
4790                print "X-Git-Tag: $tagname\n" if $tagname;
4791                print "X-Git-Url: " . $cgi->self_url() . "\n\n";
4792
4793                foreach my $line (@{$co{'comment'}}) {
4794                        print "$line\n";
4795                }
4796                print "---\n\n";
4797        }
4798
4799        # write patch
4800        if ($format eq 'html') {
4801                my $use_parents = !defined $hash_parent ||
4802                        $hash_parent eq '-c' || $hash_parent eq '--cc';
4803                git_difftree_body(\@difftree, $hash,
4804                                  $use_parents ? @{$co{'parents'}} : $hash_parent);
4805                print "<br/>\n";
4806
4807                git_patchset_body($fd, \@difftree, $hash,
4808                                  $use_parents ? @{$co{'parents'}} : $hash_parent);
4809                close $fd;
4810                print "</div>\n"; # class="page_body"
4811                git_footer_html();
4812
4813        } elsif ($format eq 'plain') {
4814                local $/ = undef;
4815                print <$fd>;
4816                close $fd
4817                        or print "Reading git-diff-tree failed\n";
4818        }
4819}
4820
4821sub git_commitdiff_plain {
4822        git_commitdiff('plain');
4823}
4824
4825sub git_history {
4826        if (!defined $hash_base) {
4827                $hash_base = git_get_head_hash($project);
4828        }
4829        if (!defined $page) {
4830                $page = 0;
4831        }
4832        my $ftype;
4833        my %co = parse_commit($hash_base);
4834        if (!%co) {
4835                die_error(undef, "Unknown commit object");
4836        }
4837
4838        my $refs = git_get_references();
4839        my $limit = sprintf("--max-count=%i", (100 * ($page+1)));
4840
4841        if (!defined $hash && defined $file_name) {
4842                $hash = git_get_hash_by_path($hash_base, $file_name);
4843        }
4844        if (defined $hash) {
4845                $ftype = git_get_type($hash);
4846        }
4847
4848        my @commitlist = parse_commits($hash_base, 101, (100 * $page), "--full-history", $file_name);
4849
4850        my $paging_nav = '';
4851        if ($page > 0) {
4852                $paging_nav .=
4853                        $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
4854                                               file_name=>$file_name)},
4855                                "first");
4856                $paging_nav .= " &sdot; " .
4857                        $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
4858                                               file_name=>$file_name, page=>$page-1),
4859                                 -accesskey => "p", -title => "Alt-p"}, "prev");
4860        } else {
4861                $paging_nav .= "first";
4862                $paging_nav .= " &sdot; prev";
4863        }
4864        if ($#commitlist >= 100) {
4865                $paging_nav .= " &sdot; " .
4866                        $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
4867                                               file_name=>$file_name, page=>$page+1),
4868                                 -accesskey => "n", -title => "Alt-n"}, "next");
4869        } else {
4870                $paging_nav .= " &sdot; next";
4871        }
4872        my $next_link = '';
4873        if ($#commitlist >= 100) {
4874                $next_link =
4875                        $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
4876                                               file_name=>$file_name, page=>$page+1),
4877                                 -accesskey => "n", -title => "Alt-n"}, "next");
4878        }
4879
4880        git_header_html();
4881        git_print_page_nav('history','', $hash_base,$co{'tree'},$hash_base, $paging_nav);
4882        git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
4883        git_print_page_path($file_name, $ftype, $hash_base);
4884
4885        git_history_body(\@commitlist, 0, 99,
4886                         $refs, $hash_base, $ftype, $next_link);
4887
4888        git_footer_html();
4889}
4890
4891sub git_search {
4892        my ($have_search) = gitweb_check_feature('search');
4893        if (!$have_search) {
4894                die_error('403 Permission denied', "Permission denied");
4895        }
4896        if (!defined $searchtext) {
4897                die_error(undef, "Text field empty");
4898        }
4899        if (!defined $hash) {
4900                $hash = git_get_head_hash($project);
4901        }
4902        my %co = parse_commit($hash);
4903        if (!%co) {
4904                die_error(undef, "Unknown commit object");
4905        }
4906        if (!defined $page) {
4907                $page = 0;
4908        }
4909
4910        $searchtype ||= 'commit';
4911        if ($searchtype eq 'pickaxe') {
4912                # pickaxe may take all resources of your box and run for several minutes
4913                # with every query - so decide by yourself how public you make this feature
4914                my ($have_pickaxe) = gitweb_check_feature('pickaxe');
4915                if (!$have_pickaxe) {
4916                        die_error('403 Permission denied', "Permission denied");
4917                }
4918        }
4919        if ($searchtype eq 'grep') {
4920                my ($have_grep) = gitweb_check_feature('grep');
4921                if (!$have_grep) {
4922                        die_error('403 Permission denied', "Permission denied");
4923                }
4924        }
4925
4926        git_header_html();
4927
4928        if ($searchtype eq 'commit' or $searchtype eq 'author' or $searchtype eq 'committer') {
4929                my $greptype;
4930                if ($searchtype eq 'commit') {
4931                        $greptype = "--grep=";
4932                } elsif ($searchtype eq 'author') {
4933                        $greptype = "--author=";
4934                } elsif ($searchtype eq 'committer') {
4935                        $greptype = "--committer=";
4936                }
4937                $greptype .= $search_regexp;
4938                my @commitlist = parse_commits($hash, 101, (100 * $page), $greptype);
4939
4940                my $paging_nav = '';
4941                if ($page > 0) {
4942                        $paging_nav .=
4943                                $cgi->a({-href => href(action=>"search", hash=>$hash,
4944                                                       searchtext=>$searchtext, searchtype=>$searchtype)},
4945                                        "first");
4946                        $paging_nav .= " &sdot; " .
4947                                $cgi->a({-href => href(action=>"search", hash=>$hash,
4948                                                       searchtext=>$searchtext, searchtype=>$searchtype,
4949                                                       page=>$page-1),
4950                                         -accesskey => "p", -title => "Alt-p"}, "prev");
4951                } else {
4952                        $paging_nav .= "first";
4953                        $paging_nav .= " &sdot; prev";
4954                }
4955                if ($#commitlist >= 100) {
4956                        $paging_nav .= " &sdot; " .
4957                                $cgi->a({-href => href(action=>"search", hash=>$hash,
4958                                                       searchtext=>$searchtext, searchtype=>$searchtype,
4959                                                       page=>$page+1),
4960                                         -accesskey => "n", -title => "Alt-n"}, "next");
4961                } else {
4962                        $paging_nav .= " &sdot; next";
4963                }
4964                my $next_link = '';
4965                if ($#commitlist >= 100) {
4966                        $next_link =
4967                                $cgi->a({-href => href(action=>"search", hash=>$hash,
4968                                                       searchtext=>$searchtext, searchtype=>$searchtype,
4969                                                       page=>$page+1),
4970                                         -accesskey => "n", -title => "Alt-n"}, "next");
4971                }
4972
4973                git_print_page_nav('','', $hash,$co{'tree'},$hash, $paging_nav);
4974                git_print_header_div('commit', esc_html($co{'title'}), $hash);
4975                git_search_grep_body(\@commitlist, 0, 99, $next_link);
4976        }
4977
4978        if ($searchtype eq 'pickaxe') {
4979                git_print_page_nav('','', $hash,$co{'tree'},$hash);
4980                git_print_header_div('commit', esc_html($co{'title'}), $hash);
4981
4982                print "<table cellspacing=\"0\">\n";
4983                my $alternate = 1;
4984                $/ = "\n";
4985                my $git_command = git_cmd_str();
4986                my $searchqtext = $searchtext;
4987                $searchqtext =~ s/'/'\\''/;
4988                open my $fd, "-|", "$git_command rev-list $hash | " .
4989                        "$git_command diff-tree -r --stdin -S\'$searchqtext\'";
4990                undef %co;
4991                my @files;
4992                while (my $line = <$fd>) {
4993                        if (%co && $line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)\t(.*)$/) {
4994                                my %set;
4995                                $set{'file'} = $6;
4996                                $set{'from_id'} = $3;
4997                                $set{'to_id'} = $4;
4998                                $set{'id'} = $set{'to_id'};
4999                                if ($set{'id'} =~ m/0{40}/) {
5000                                        $set{'id'} = $set{'from_id'};
5001                                }
5002                                if ($set{'id'} =~ m/0{40}/) {
5003                                        next;
5004                                }
5005                                push @files, \%set;
5006                        } elsif ($line =~ m/^([0-9a-fA-F]{40})$/){
5007                                if (%co) {
5008                                        if ($alternate) {
5009                                                print "<tr class=\"dark\">\n";
5010                                        } else {
5011                                                print "<tr class=\"light\">\n";
5012                                        }
5013                                        $alternate ^= 1;
5014                                        print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
5015                                              "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 5)) . "</i></td>\n" .
5016                                              "<td>" .
5017                                              $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}),
5018                                                      -class => "list subject"},
5019                                                      esc_html(chop_str($co{'title'}, 50)) . "<br/>");
5020                                        while (my $setref = shift @files) {
5021                                                my %set = %$setref;
5022                                                print $cgi->a({-href => href(action=>"blob", hash_base=>$co{'id'},
5023                                                                             hash=>$set{'id'}, file_name=>$set{'file'}),
5024                                                              -class => "list"},
5025                                                              "<span class=\"match\">" . esc_path($set{'file'}) . "</span>") .
5026                                                      "<br/>\n";
5027                                        }
5028                                        print "</td>\n" .
5029                                              "<td class=\"link\">" .
5030                                              $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})}, "commit") .
5031                                              " | " .
5032                                              $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$co{'id'})}, "tree");
5033                                        print "</td>\n" .
5034                                              "</tr>\n";
5035                                }
5036                                %co = parse_commit($1);
5037                        }
5038                }
5039                close $fd;
5040
5041                print "</table>\n";
5042        }
5043
5044        if ($searchtype eq 'grep') {
5045                git_print_page_nav('','', $hash,$co{'tree'},$hash);
5046                git_print_header_div('commit', esc_html($co{'title'}), $hash);
5047
5048                print "<table cellspacing=\"0\">\n";
5049                my $alternate = 1;
5050                my $matches = 0;
5051                $/ = "\n";
5052                open my $fd, "-|", git_cmd(), 'grep', '-n', '-i', '-E', $searchtext, $co{'tree'};
5053                my $lastfile = '';
5054                while (my $line = <$fd>) {
5055                        chomp $line;
5056                        my ($file, $lno, $ltext, $binary);
5057                        last if ($matches++ > 1000);
5058                        if ($line =~ /^Binary file (.+) matches$/) {
5059                                $file = $1;
5060                                $binary = 1;
5061                        } else {
5062                                (undef, $file, $lno, $ltext) = split(/:/, $line, 4);
5063                        }
5064                        if ($file ne $lastfile) {
5065                                $lastfile and print "</td></tr>\n";
5066                                if ($alternate++) {
5067                                        print "<tr class=\"dark\">\n";
5068                                } else {
5069                                        print "<tr class=\"light\">\n";
5070                                }
5071                                print "<td class=\"list\">".
5072                                        $cgi->a({-href => href(action=>"blob", hash=>$co{'hash'},
5073                                                               file_name=>"$file"),
5074                                                -class => "list"}, esc_path($file));
5075                                print "</td><td>\n";
5076                                $lastfile = $file;
5077                        }
5078                        if ($binary) {
5079                                print "<div class=\"binary\">Binary file</div>\n";
5080                        } else {
5081                                $ltext = untabify($ltext);
5082                                if ($ltext =~ m/^(.*)($searchtext)(.*)$/i) {
5083                                        $ltext = esc_html($1, -nbsp=>1);
5084                                        $ltext .= '<span class="match">';
5085                                        $ltext .= esc_html($2, -nbsp=>1);
5086                                        $ltext .= '</span>';
5087                                        $ltext .= esc_html($3, -nbsp=>1);
5088                                } else {
5089                                        $ltext = esc_html($ltext, -nbsp=>1);
5090                                }
5091                                print "<div class=\"pre\">" .
5092                                        $cgi->a({-href => href(action=>"blob", hash=>$co{'hash'},
5093                                                               file_name=>"$file").'#l'.$lno,
5094                                                -class => "linenr"}, sprintf('%4i', $lno))
5095                                        . ' ' .  $ltext . "</div>\n";
5096                        }
5097                }
5098                if ($lastfile) {
5099                        print "</td></tr>\n";
5100                        if ($matches > 1000) {
5101                                print "<div class=\"diff nodifferences\">Too many matches, listing trimmed</div>\n";
5102                        }
5103                } else {
5104                        print "<div class=\"diff nodifferences\">No matches found</div>\n";
5105                }
5106                close $fd;
5107
5108                print "</table>\n";
5109        }
5110        git_footer_html();
5111}
5112
5113sub git_search_help {
5114        git_header_html();
5115        git_print_page_nav('','', $hash,$hash,$hash);
5116        print <<EOT;
5117<dl>
5118<dt><b>commit</b></dt>
5119<dd>The commit messages and authorship information will be scanned for the given string.</dd>
5120EOT
5121        my ($have_grep) = gitweb_check_feature('grep');
5122        if ($have_grep) {
5123                print <<EOT;
5124<dt><b>grep</b></dt>
5125<dd>All files in the currently selected tree (HEAD unless you are explicitly browsing
5126    a different one) are searched for the given
5127<a href="http://en.wikipedia.org/wiki/Regular_expression">regular expression</a>
5128(POSIX extended) and the matches are listed. On large
5129trees, this search can take a while and put some strain on the server, so please use it with
5130some consideration.</dd>
5131EOT
5132        }
5133        print <<EOT;
5134<dt><b>author</b></dt>
5135<dd>Name and e-mail of the change author and date of birth of the patch will be scanned for the given string.</dd>
5136<dt><b>committer</b></dt>
5137<dd>Name and e-mail of the committer and date of commit will be scanned for the given string.</dd>
5138EOT
5139        my ($have_pickaxe) = gitweb_check_feature('pickaxe');
5140        if ($have_pickaxe) {
5141                print <<EOT;
5142<dt><b>pickaxe</b></dt>
5143<dd>All commits that caused the string to appear or disappear from any file (changes that
5144added, removed or "modified" the string) will be listed. This search can take a while and
5145takes a lot of strain on the server, so please use it wisely.</dd>
5146EOT
5147        }
5148        print "</dl>\n";
5149        git_footer_html();
5150}
5151
5152sub git_shortlog {
5153        my $head = git_get_head_hash($project);
5154        if (!defined $hash) {
5155                $hash = $head;
5156        }
5157        if (!defined $page) {
5158                $page = 0;
5159        }
5160        my $refs = git_get_references();
5161
5162        my @commitlist = parse_commits($hash, 101, (100 * $page));
5163
5164        my $paging_nav = format_paging_nav('shortlog', $hash, $head, $page, (100 * ($page+1)));
5165        my $next_link = '';
5166        if ($#commitlist >= 100) {
5167                $next_link =
5168                        $cgi->a({-href => href(action=>"shortlog", hash=>$hash, page=>$page+1),
5169                                 -accesskey => "n", -title => "Alt-n"}, "next");
5170        }
5171
5172        git_header_html();
5173        git_print_page_nav('shortlog','', $hash,$hash,$hash, $paging_nav);
5174        git_print_header_div('summary', $project);
5175
5176        git_shortlog_body(\@commitlist, 0, 99, $refs, $next_link);
5177
5178        git_footer_html();
5179}
5180
5181## ......................................................................
5182## feeds (RSS, Atom; OPML)
5183
5184sub git_feed {
5185        my $format = shift || 'atom';
5186        my ($have_blame) = gitweb_check_feature('blame');
5187
5188        # Atom: http://www.atomenabled.org/developers/syndication/
5189        # RSS:  http://www.notestips.com/80256B3A007F2692/1/NAMO5P9UPQ
5190        if ($format ne 'rss' && $format ne 'atom') {
5191                die_error(undef, "Unknown web feed format");
5192        }
5193
5194        # log/feed of current (HEAD) branch, log of given branch, history of file/directory
5195        my $head = $hash || 'HEAD';
5196        my @commitlist = parse_commits($head, 150);
5197
5198        my %latest_commit;
5199        my %latest_date;
5200        my $content_type = "application/$format+xml";
5201        if (defined $cgi->http('HTTP_ACCEPT') &&
5202                 $cgi->Accept('text/xml') > $cgi->Accept($content_type)) {
5203                # browser (feed reader) prefers text/xml
5204                $content_type = 'text/xml';
5205        }
5206        if (defined($commitlist[0])) {
5207                %latest_commit = %{$commitlist[0]};
5208                %latest_date   = parse_date($latest_commit{'author_epoch'});
5209                print $cgi->header(
5210                        -type => $content_type,
5211                        -charset => 'utf-8',
5212                        -last_modified => $latest_date{'rfc2822'});
5213        } else {
5214                print $cgi->header(
5215                        -type => $content_type,
5216                        -charset => 'utf-8');
5217        }
5218
5219        # Optimization: skip generating the body if client asks only
5220        # for Last-Modified date.
5221        return if ($cgi->request_method() eq 'HEAD');
5222
5223        # header variables
5224        my $title = "$site_name - $project/$action";
5225        my $feed_type = 'log';
5226        if (defined $hash) {
5227                $title .= " - '$hash'";
5228                $feed_type = 'branch log';
5229                if (defined $file_name) {
5230                        $title .= " :: $file_name";
5231                        $feed_type = 'history';
5232                }
5233        } elsif (defined $file_name) {
5234                $title .= " - $file_name";
5235                $feed_type = 'history';
5236        }
5237        $title .= " $feed_type";
5238        my $descr = git_get_project_description($project);
5239        if (defined $descr) {
5240                $descr = esc_html($descr);
5241        } else {
5242                $descr = "$project " .
5243                         ($format eq 'rss' ? 'RSS' : 'Atom') .
5244                         " feed";
5245        }
5246        my $owner = git_get_project_owner($project);
5247        $owner = esc_html($owner);
5248
5249        #header
5250        my $alt_url;
5251        if (defined $file_name) {
5252                $alt_url = href(-full=>1, action=>"history", hash=>$hash, file_name=>$file_name);
5253        } elsif (defined $hash) {
5254                $alt_url = href(-full=>1, action=>"log", hash=>$hash);
5255        } else {
5256                $alt_url = href(-full=>1, action=>"summary");
5257        }
5258        print qq!<?xml version="1.0" encoding="utf-8"?>\n!;
5259        if ($format eq 'rss') {
5260                print <<XML;
5261<rss version="2.0" xmlns:content="http://purl.org/rss/1.0/modules/content/">
5262<channel>
5263XML
5264                print "<title>$title</title>\n" .
5265                      "<link>$alt_url</link>\n" .
5266                      "<description>$descr</description>\n" .
5267                      "<language>en</language>\n";
5268        } elsif ($format eq 'atom') {
5269                print <<XML;
5270<feed xmlns="http://www.w3.org/2005/Atom">
5271XML
5272                print "<title>$title</title>\n" .
5273                      "<subtitle>$descr</subtitle>\n" .
5274                      '<link rel="alternate" type="text/html" href="' .
5275                      $alt_url . '" />' . "\n" .
5276                      '<link rel="self" type="' . $content_type . '" href="' .
5277                      $cgi->self_url() . '" />' . "\n" .
5278                      "<id>" . href(-full=>1) . "</id>\n" .
5279                      # use project owner for feed author
5280                      "<author><name>$owner</name></author>\n";
5281                if (defined $favicon) {
5282                        print "<icon>" . esc_url($favicon) . "</icon>\n";
5283                }
5284                if (defined $logo_url) {
5285                        # not twice as wide as tall: 72 x 27 pixels
5286                        print "<logo>" . esc_url($logo) . "</logo>\n";
5287                }
5288                if (! %latest_date) {
5289                        # dummy date to keep the feed valid until commits trickle in:
5290                        print "<updated>1970-01-01T00:00:00Z</updated>\n";
5291                } else {
5292                        print "<updated>$latest_date{'iso-8601'}</updated>\n";
5293                }
5294        }
5295
5296        # contents
5297        for (my $i = 0; $i <= $#commitlist; $i++) {
5298                my %co = %{$commitlist[$i]};
5299                my $commit = $co{'id'};
5300                # we read 150, we always show 30 and the ones more recent than 48 hours
5301                if (($i >= 20) && ((time - $co{'author_epoch'}) > 48*60*60)) {
5302                        last;
5303                }
5304                my %cd = parse_date($co{'author_epoch'});
5305
5306                # get list of changed files
5307                open my $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
5308                        $co{'parent'} || "--root",
5309                        $co{'id'}, "--", (defined $file_name ? $file_name : ())
5310                        or next;
5311                my @difftree = map { chomp; $_ } <$fd>;
5312                close $fd
5313                        or next;
5314
5315                # print element (entry, item)
5316                my $co_url = href(-full=>1, action=>"commit", hash=>$commit);
5317                if ($format eq 'rss') {
5318                        print "<item>\n" .
5319                              "<title>" . esc_html($co{'title'}) . "</title>\n" .
5320                              "<author>" . esc_html($co{'author'}) . "</author>\n" .
5321                              "<pubDate>$cd{'rfc2822'}</pubDate>\n" .
5322                              "<guid isPermaLink=\"true\">$co_url</guid>\n" .
5323                              "<link>$co_url</link>\n" .
5324                              "<description>" . esc_html($co{'title'}) . "</description>\n" .
5325                              "<content:encoded>" .
5326                              "<![CDATA[\n";
5327                } elsif ($format eq 'atom') {
5328                        print "<entry>\n" .
5329                              "<title type=\"html\">" . esc_html($co{'title'}) . "</title>\n" .
5330                              "<updated>$cd{'iso-8601'}</updated>\n" .
5331                              "<author>\n" .
5332                              "  <name>" . esc_html($co{'author_name'}) . "</name>\n";
5333                        if ($co{'author_email'}) {
5334                                print "  <email>" . esc_html($co{'author_email'}) . "</email>\n";
5335                        }
5336                        print "</author>\n" .
5337                              # use committer for contributor
5338                              "<contributor>\n" .
5339                              "  <name>" . esc_html($co{'committer_name'}) . "</name>\n";
5340                        if ($co{'committer_email'}) {
5341                                print "  <email>" . esc_html($co{'committer_email'}) . "</email>\n";
5342                        }
5343                        print "</contributor>\n" .
5344                              "<published>$cd{'iso-8601'}</published>\n" .
5345                              "<link rel=\"alternate\" type=\"text/html\" href=\"$co_url\" />\n" .
5346                              "<id>$co_url</id>\n" .
5347                              "<content type=\"xhtml\" xml:base=\"" . esc_url($my_url) . "\">\n" .
5348                              "<div xmlns=\"http://www.w3.org/1999/xhtml\">\n";
5349                }
5350                my $comment = $co{'comment'};
5351                print "<pre>\n";
5352                foreach my $line (@$comment) {
5353                        $line = esc_html($line);
5354                        print "$line\n";
5355                }
5356                print "</pre><ul>\n";
5357                foreach my $difftree_line (@difftree) {
5358                        my %difftree = parse_difftree_raw_line($difftree_line);
5359                        next if !$difftree{'from_id'};
5360
5361                        my $file = $difftree{'file'} || $difftree{'to_file'};
5362
5363                        print "<li>" .
5364                              "[" .
5365                              $cgi->a({-href => href(-full=>1, action=>"blobdiff",
5366                                                     hash=>$difftree{'to_id'}, hash_parent=>$difftree{'from_id'},
5367                                                     hash_base=>$co{'id'}, hash_parent_base=>$co{'parent'},
5368                                                     file_name=>$file, file_parent=>$difftree{'from_file'}),
5369                                      -title => "diff"}, 'D');
5370                        if ($have_blame) {
5371                                print $cgi->a({-href => href(-full=>1, action=>"blame",
5372                                                             file_name=>$file, hash_base=>$commit),
5373                                              -title => "blame"}, 'B');
5374                        }
5375                        # if this is not a feed of a file history
5376                        if (!defined $file_name || $file_name ne $file) {
5377                                print $cgi->a({-href => href(-full=>1, action=>"history",
5378                                                             file_name=>$file, hash=>$commit),
5379                                              -title => "history"}, 'H');
5380                        }
5381                        $file = esc_path($file);
5382                        print "] ".
5383                              "$file</li>\n";
5384                }
5385                if ($format eq 'rss') {
5386                        print "</ul>]]>\n" .
5387                              "</content:encoded>\n" .
5388                              "</item>\n";
5389                } elsif ($format eq 'atom') {
5390                        print "</ul>\n</div>\n" .
5391                              "</content>\n" .
5392                              "</entry>\n";
5393                }
5394        }
5395
5396        # end of feed
5397        if ($format eq 'rss') {
5398                print "</channel>\n</rss>\n";
5399        }       elsif ($format eq 'atom') {
5400                print "</feed>\n";
5401        }
5402}
5403
5404sub git_rss {
5405        git_feed('rss');
5406}
5407
5408sub git_atom {
5409        git_feed('atom');
5410}
5411
5412sub git_opml {
5413        my @list = git_get_projects_list();
5414
5415        print $cgi->header(-type => 'text/xml', -charset => 'utf-8');
5416        print <<XML;
5417<?xml version="1.0" encoding="utf-8"?>
5418<opml version="1.0">
5419<head>
5420  <title>$site_name OPML Export</title>
5421</head>
5422<body>
5423<outline text="git RSS feeds">
5424XML
5425
5426        foreach my $pr (@list) {
5427                my %proj = %$pr;
5428                my $head = git_get_head_hash($proj{'path'});
5429                if (!defined $head) {
5430                        next;
5431                }
5432                $git_dir = "$projectroot/$proj{'path'}";
5433                my %co = parse_commit($head);
5434                if (!%co) {
5435                        next;
5436                }
5437
5438                my $path = esc_html(chop_str($proj{'path'}, 25, 5));
5439                my $rss  = "$my_url?p=$proj{'path'};a=rss";
5440                my $html = "$my_url?p=$proj{'path'};a=summary";
5441                print "<outline type=\"rss\" text=\"$path\" title=\"$path\" xmlUrl=\"$rss\" htmlUrl=\"$html\"/>\n";
5442        }
5443        print <<XML;
5444</outline>
5445</body>
5446</opml>
5447XML
5448}