55fb1005340e4fc483a9280b09f1f59c896eed65
   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# fs traversing limit for getting project list
  39# the number is relative to the projectroot
  40our $project_maxdepth = "++GITWEB_PROJECT_MAXDEPTH++";
  41
  42# target of the home link on top of all pages
  43our $home_link = $my_uri || "/";
  44
  45# string of the home link on top of all pages
  46our $home_link_str = "++GITWEB_HOME_LINK_STR++";
  47
  48# name of your site or organization to appear in page titles
  49# replace this with something more descriptive for clearer bookmarks
  50our $site_name = "++GITWEB_SITENAME++"
  51                 || ($ENV{'SERVER_NAME'} || "Untitled") . " Git";
  52
  53# filename of html text to include at top of each page
  54our $site_header = "++GITWEB_SITE_HEADER++";
  55# html text to include at home page
  56our $home_text = "++GITWEB_HOMETEXT++";
  57# filename of html text to include at bottom of each page
  58our $site_footer = "++GITWEB_SITE_FOOTER++";
  59
  60# URI of stylesheets
  61our @stylesheets = ("++GITWEB_CSS++");
  62# URI of a single stylesheet, which can be overridden in GITWEB_CONFIG.
  63our $stylesheet = undef;
  64# URI of GIT logo (72x27 size)
  65our $logo = "++GITWEB_LOGO++";
  66# URI of GIT favicon, assumed to be image/png type
  67our $favicon = "++GITWEB_FAVICON++";
  68
  69# URI and label (title) of GIT logo link
  70#our $logo_url = "http://www.kernel.org/pub/software/scm/git/docs/";
  71#our $logo_label = "git documentation";
  72our $logo_url = "http://git.or.cz/";
  73our $logo_label = "git homepage";
  74
  75# source of projects list
  76our $projects_list = "++GITWEB_LIST++";
  77
  78# the width (in characters) of the projects list "Description" column
  79our $projects_list_description_width = 25;
  80
  81# default order of projects list
  82# valid values are none, project, descr, owner, and age
  83our $default_projects_order = "project";
  84
  85# show repository only if this file exists
  86# (only effective if this variable evaluates to true)
  87our $export_ok = "++GITWEB_EXPORT_OK++";
  88
  89# only allow viewing of repositories also shown on the overview page
  90our $strict_export = "++GITWEB_STRICT_EXPORT++";
  91
  92# list of git base URLs used for URL to where fetch project from,
  93# i.e. full URL is "$git_base_url/$project"
  94our @git_base_url_list = grep { $_ ne '' } ("++GITWEB_BASE_URL++");
  95
  96# default blob_plain mimetype and default charset for text/plain blob
  97our $default_blob_plain_mimetype = 'text/plain';
  98our $default_text_plain_charset  = undef;
  99
 100# file to use for guessing MIME types before trying /etc/mime.types
 101# (relative to the current git repository)
 102our $mimetypes_file = undef;
 103
 104# assume this charset if line contains non-UTF-8 characters;
 105# it should be valid encoding (see Encoding::Supported(3pm) for list),
 106# for which encoding all byte sequences are valid, for example
 107# 'iso-8859-1' aka 'latin1' (it is decoded without checking, so it
 108# could be even 'utf-8' for the old behavior)
 109our $fallback_encoding = 'latin1';
 110
 111# rename detection options for git-diff and git-diff-tree
 112# - default is '-M', with the cost proportional to
 113#   (number of removed files) * (number of new files).
 114# - more costly is '-C' (which implies '-M'), with the cost proportional to
 115#   (number of changed files + number of removed files) * (number of new files)
 116# - even more costly is '-C', '--find-copies-harder' with cost
 117#   (number of files in the original tree) * (number of new files)
 118# - one might want to include '-B' option, e.g. '-B', '-M'
 119our @diff_opts = ('-M'); # taken from git_commit
 120
 121# information about snapshot formats that gitweb is capable of serving
 122our %known_snapshot_formats = (
 123        # name => {
 124        #       'display' => display name,
 125        #       'type' => mime type,
 126        #       'suffix' => filename suffix,
 127        #       'format' => --format for git-archive,
 128        #       'compressor' => [compressor command and arguments]
 129        #                       (array reference, optional)}
 130        #
 131        'tgz' => {
 132                'display' => 'tar.gz',
 133                'type' => 'application/x-gzip',
 134                'suffix' => '.tar.gz',
 135                'format' => 'tar',
 136                'compressor' => ['gzip']},
 137
 138        'tbz2' => {
 139                'display' => 'tar.bz2',
 140                'type' => 'application/x-bzip2',
 141                'suffix' => '.tar.bz2',
 142                'format' => 'tar',
 143                'compressor' => ['bzip2']},
 144
 145        'zip' => {
 146                'display' => 'zip',
 147                'type' => 'application/x-zip',
 148                'suffix' => '.zip',
 149                'format' => 'zip'},
 150);
 151
 152# Aliases so we understand old gitweb.snapshot values in repository
 153# configuration.
 154our %known_snapshot_format_aliases = (
 155        'gzip'  => 'tgz',
 156        'bzip2' => 'tbz2',
 157
 158        # backward compatibility: legacy gitweb config support
 159        'x-gzip' => undef, 'gz' => undef,
 160        'x-bzip2' => undef, 'bz2' => undef,
 161        'x-zip' => undef, '' => undef,
 162);
 163
 164# You define site-wide feature defaults here; override them with
 165# $GITWEB_CONFIG as necessary.
 166our %feature = (
 167        # feature => {
 168        #       'sub' => feature-sub (subroutine),
 169        #       'override' => allow-override (boolean),
 170        #       'default' => [ default options...] (array reference)}
 171        #
 172        # if feature is overridable (it means that allow-override has true value),
 173        # then feature-sub will be called with default options as parameters;
 174        # return value of feature-sub indicates if to enable specified feature
 175        #
 176        # if there is no 'sub' key (no feature-sub), then feature cannot be
 177        # overriden
 178        #
 179        # use gitweb_check_feature(<feature>) to check if <feature> is enabled
 180
 181        # Enable the 'blame' blob view, showing the last commit that modified
 182        # each line in the file. This can be very CPU-intensive.
 183
 184        # To enable system wide have in $GITWEB_CONFIG
 185        # $feature{'blame'}{'default'} = [1];
 186        # To have project specific config enable override in $GITWEB_CONFIG
 187        # $feature{'blame'}{'override'} = 1;
 188        # and in project config gitweb.blame = 0|1;
 189        'blame' => {
 190                'sub' => \&feature_blame,
 191                'override' => 0,
 192                'default' => [0]},
 193
 194        # Enable the 'snapshot' link, providing a compressed archive of any
 195        # tree. This can potentially generate high traffic if you have large
 196        # project.
 197
 198        # Value is a list of formats defined in %known_snapshot_formats that
 199        # you wish to offer.
 200        # To disable system wide have in $GITWEB_CONFIG
 201        # $feature{'snapshot'}{'default'} = [];
 202        # To have project specific config enable override in $GITWEB_CONFIG
 203        # $feature{'snapshot'}{'override'} = 1;
 204        # and in project config, a comma-separated list of formats or "none"
 205        # to disable.  Example: gitweb.snapshot = tbz2,zip;
 206        'snapshot' => {
 207                'sub' => \&feature_snapshot,
 208                'override' => 0,
 209                'default' => ['tgz']},
 210
 211        # Enable text search, which will list the commits which match author,
 212        # committer or commit text to a given string.  Enabled by default.
 213        # Project specific override is not supported.
 214        'search' => {
 215                'override' => 0,
 216                'default' => [1]},
 217
 218        # Enable grep search, which will list the files in currently selected
 219        # tree containing the given string. Enabled by default. This can be
 220        # potentially CPU-intensive, of course.
 221
 222        # To enable system wide have in $GITWEB_CONFIG
 223        # $feature{'grep'}{'default'} = [1];
 224        # To have project specific config enable override in $GITWEB_CONFIG
 225        # $feature{'grep'}{'override'} = 1;
 226        # and in project config gitweb.grep = 0|1;
 227        'grep' => {
 228                'override' => 0,
 229                'default' => [1]},
 230
 231        # Enable the pickaxe search, which will list the commits that modified
 232        # a given string in a file. This can be practical and quite faster
 233        # alternative to 'blame', but still potentially CPU-intensive.
 234
 235        # To enable system wide have in $GITWEB_CONFIG
 236        # $feature{'pickaxe'}{'default'} = [1];
 237        # To have project specific config enable override in $GITWEB_CONFIG
 238        # $feature{'pickaxe'}{'override'} = 1;
 239        # and in project config gitweb.pickaxe = 0|1;
 240        'pickaxe' => {
 241                'sub' => \&feature_pickaxe,
 242                'override' => 0,
 243                'default' => [1]},
 244
 245        # Make gitweb use an alternative format of the URLs which can be
 246        # more readable and natural-looking: project name is embedded
 247        # directly in the path and the query string contains other
 248        # auxiliary information. All gitweb installations recognize
 249        # URL in either format; this configures in which formats gitweb
 250        # generates links.
 251
 252        # To enable system wide have in $GITWEB_CONFIG
 253        # $feature{'pathinfo'}{'default'} = [1];
 254        # Project specific override is not supported.
 255
 256        # Note that you will need to change the default location of CSS,
 257        # favicon, logo and possibly other files to an absolute URL. Also,
 258        # if gitweb.cgi serves as your indexfile, you will need to force
 259        # $my_uri to contain the script name in your $GITWEB_CONFIG.
 260        'pathinfo' => {
 261                'override' => 0,
 262                'default' => [0]},
 263
 264        # Make gitweb consider projects in project root subdirectories
 265        # to be forks of existing projects. Given project $projname.git,
 266        # projects matching $projname/*.git will not be shown in the main
 267        # projects list, instead a '+' mark will be added to $projname
 268        # there and a 'forks' view will be enabled for the project, listing
 269        # all the forks. If project list is taken from a file, forks have
 270        # to be listed after the main project.
 271
 272        # To enable system wide have in $GITWEB_CONFIG
 273        # $feature{'forks'}{'default'} = [1];
 274        # Project specific override is not supported.
 275        'forks' => {
 276                'override' => 0,
 277                'default' => [0]},
 278);
 279
 280sub gitweb_check_feature {
 281        my ($name) = @_;
 282        return unless exists $feature{$name};
 283        my ($sub, $override, @defaults) = (
 284                $feature{$name}{'sub'},
 285                $feature{$name}{'override'},
 286                @{$feature{$name}{'default'}});
 287        if (!$override) { return @defaults; }
 288        if (!defined $sub) {
 289                warn "feature $name is not overrideable";
 290                return @defaults;
 291        }
 292        return $sub->(@defaults);
 293}
 294
 295sub feature_blame {
 296        my ($val) = git_get_project_config('blame', '--bool');
 297
 298        if ($val eq 'true') {
 299                return 1;
 300        } elsif ($val eq 'false') {
 301                return 0;
 302        }
 303
 304        return $_[0];
 305}
 306
 307sub feature_snapshot {
 308        my (@fmts) = @_;
 309
 310        my ($val) = git_get_project_config('snapshot');
 311
 312        if ($val) {
 313                @fmts = ($val eq 'none' ? () : split /\s*[,\s]\s*/, $val);
 314        }
 315
 316        return @fmts;
 317}
 318
 319sub feature_grep {
 320        my ($val) = git_get_project_config('grep', '--bool');
 321
 322        if ($val eq 'true') {
 323                return (1);
 324        } elsif ($val eq 'false') {
 325                return (0);
 326        }
 327
 328        return ($_[0]);
 329}
 330
 331sub feature_pickaxe {
 332        my ($val) = git_get_project_config('pickaxe', '--bool');
 333
 334        if ($val eq 'true') {
 335                return (1);
 336        } elsif ($val eq 'false') {
 337                return (0);
 338        }
 339
 340        return ($_[0]);
 341}
 342
 343# checking HEAD file with -e is fragile if the repository was
 344# initialized long time ago (i.e. symlink HEAD) and was pack-ref'ed
 345# and then pruned.
 346sub check_head_link {
 347        my ($dir) = @_;
 348        my $headfile = "$dir/HEAD";
 349        return ((-e $headfile) ||
 350                (-l $headfile && readlink($headfile) =~ /^refs\/heads\//));
 351}
 352
 353sub check_export_ok {
 354        my ($dir) = @_;
 355        return (check_head_link($dir) &&
 356                (!$export_ok || -e "$dir/$export_ok"));
 357}
 358
 359# process alternate names for backward compatibility
 360# filter out unsupported (unknown) snapshot formats
 361sub filter_snapshot_fmts {
 362        my @fmts = @_;
 363
 364        @fmts = map {
 365                exists $known_snapshot_format_aliases{$_} ?
 366                       $known_snapshot_format_aliases{$_} : $_} @fmts;
 367        @fmts = grep(exists $known_snapshot_formats{$_}, @fmts);
 368
 369}
 370
 371our $GITWEB_CONFIG = $ENV{'GITWEB_CONFIG'} || "++GITWEB_CONFIG++";
 372if (-e $GITWEB_CONFIG) {
 373        do $GITWEB_CONFIG;
 374} else {
 375        our $GITWEB_CONFIG_SYSTEM = $ENV{'GITWEB_CONFIG_SYSTEM'} || "++GITWEB_CONFIG_SYSTEM++";
 376        do $GITWEB_CONFIG_SYSTEM if -e $GITWEB_CONFIG_SYSTEM;
 377}
 378
 379# version of the core git binary
 380our $git_version = qx($GIT --version) =~ m/git version (.*)$/ ? $1 : "unknown";
 381
 382$projects_list ||= $projectroot;
 383
 384# ======================================================================
 385# input validation and dispatch
 386our $action = $cgi->param('a');
 387if (defined $action) {
 388        if ($action =~ m/[^0-9a-zA-Z\.\-_]/) {
 389                die_error(undef, "Invalid action parameter");
 390        }
 391}
 392
 393# parameters which are pathnames
 394our $project = $cgi->param('p');
 395if (defined $project) {
 396        if (!validate_pathname($project) ||
 397            !(-d "$projectroot/$project") ||
 398            !check_head_link("$projectroot/$project") ||
 399            ($export_ok && !(-e "$projectroot/$project/$export_ok")) ||
 400            ($strict_export && !project_in_list($project))) {
 401                undef $project;
 402                die_error(undef, "No such project");
 403        }
 404}
 405
 406our $file_name = $cgi->param('f');
 407if (defined $file_name) {
 408        if (!validate_pathname($file_name)) {
 409                die_error(undef, "Invalid file parameter");
 410        }
 411}
 412
 413our $file_parent = $cgi->param('fp');
 414if (defined $file_parent) {
 415        if (!validate_pathname($file_parent)) {
 416                die_error(undef, "Invalid file parent parameter");
 417        }
 418}
 419
 420# parameters which are refnames
 421our $hash = $cgi->param('h');
 422if (defined $hash) {
 423        if (!validate_refname($hash)) {
 424                die_error(undef, "Invalid hash parameter");
 425        }
 426}
 427
 428our $hash_parent = $cgi->param('hp');
 429if (defined $hash_parent) {
 430        if (!validate_refname($hash_parent)) {
 431                die_error(undef, "Invalid hash parent parameter");
 432        }
 433}
 434
 435our $hash_base = $cgi->param('hb');
 436if (defined $hash_base) {
 437        if (!validate_refname($hash_base)) {
 438                die_error(undef, "Invalid hash base parameter");
 439        }
 440}
 441
 442my %allowed_options = (
 443        "--no-merges" => [ qw(rss atom log shortlog history) ],
 444);
 445
 446our @extra_options = $cgi->param('opt');
 447if (defined @extra_options) {
 448        foreach my $opt (@extra_options) {
 449                if (not exists $allowed_options{$opt}) {
 450                        die_error(undef, "Invalid option parameter");
 451                }
 452                if (not grep(/^$action$/, @{$allowed_options{$opt}})) {
 453                        die_error(undef, "Invalid option parameter for this action");
 454                }
 455        }
 456}
 457
 458our $hash_parent_base = $cgi->param('hpb');
 459if (defined $hash_parent_base) {
 460        if (!validate_refname($hash_parent_base)) {
 461                die_error(undef, "Invalid hash parent base parameter");
 462        }
 463}
 464
 465# other parameters
 466our $page = $cgi->param('pg');
 467if (defined $page) {
 468        if ($page =~ m/[^0-9]/) {
 469                die_error(undef, "Invalid page parameter");
 470        }
 471}
 472
 473our $searchtype = $cgi->param('st');
 474if (defined $searchtype) {
 475        if ($searchtype =~ m/[^a-z]/) {
 476                die_error(undef, "Invalid searchtype parameter");
 477        }
 478}
 479
 480our $search_use_regexp = $cgi->param('sr');
 481
 482our $searchtext = $cgi->param('s');
 483our $search_regexp;
 484if (defined $searchtext) {
 485        if (length($searchtext) < 2) {
 486                die_error(undef, "At least two characters are required for search parameter");
 487        }
 488        $search_regexp = $search_use_regexp ? $searchtext : quotemeta $searchtext;
 489}
 490
 491# now read PATH_INFO and use it as alternative to parameters
 492sub evaluate_path_info {
 493        return if defined $project;
 494        my $path_info = $ENV{"PATH_INFO"};
 495        return if !$path_info;
 496        $path_info =~ s,^/+,,;
 497        return if !$path_info;
 498        # find which part of PATH_INFO is project
 499        $project = $path_info;
 500        $project =~ s,/+$,,;
 501        while ($project && !check_head_link("$projectroot/$project")) {
 502                $project =~ s,/*[^/]*$,,;
 503        }
 504        # validate project
 505        $project = validate_pathname($project);
 506        if (!$project ||
 507            ($export_ok && !-e "$projectroot/$project/$export_ok") ||
 508            ($strict_export && !project_in_list($project))) {
 509                undef $project;
 510                return;
 511        }
 512        # do not change any parameters if an action is given using the query string
 513        return if $action;
 514        $path_info =~ s,^\Q$project\E/*,,;
 515        my ($refname, $pathname) = split(/:/, $path_info, 2);
 516        if (defined $pathname) {
 517                # we got "project.git/branch:filename" or "project.git/branch:dir/"
 518                # we could use git_get_type(branch:pathname), but it needs $git_dir
 519                $pathname =~ s,^/+,,;
 520                if (!$pathname || substr($pathname, -1) eq "/") {
 521                        $action  ||= "tree";
 522                        $pathname =~ s,/$,,;
 523                } else {
 524                        $action  ||= "blob_plain";
 525                }
 526                $hash_base ||= validate_refname($refname);
 527                $file_name ||= validate_pathname($pathname);
 528        } elsif (defined $refname) {
 529                # we got "project.git/branch"
 530                $action ||= "shortlog";
 531                $hash   ||= validate_refname($refname);
 532        }
 533}
 534evaluate_path_info();
 535
 536# path to the current git repository
 537our $git_dir;
 538$git_dir = "$projectroot/$project" if $project;
 539
 540# dispatch
 541my %actions = (
 542        "blame" => \&git_blame2,
 543        "blobdiff" => \&git_blobdiff,
 544        "blobdiff_plain" => \&git_blobdiff_plain,
 545        "blob" => \&git_blob,
 546        "blob_plain" => \&git_blob_plain,
 547        "commitdiff" => \&git_commitdiff,
 548        "commitdiff_plain" => \&git_commitdiff_plain,
 549        "commit" => \&git_commit,
 550        "forks" => \&git_forks,
 551        "heads" => \&git_heads,
 552        "history" => \&git_history,
 553        "log" => \&git_log,
 554        "rss" => \&git_rss,
 555        "atom" => \&git_atom,
 556        "search" => \&git_search,
 557        "search_help" => \&git_search_help,
 558        "shortlog" => \&git_shortlog,
 559        "summary" => \&git_summary,
 560        "tag" => \&git_tag,
 561        "tags" => \&git_tags,
 562        "tree" => \&git_tree,
 563        "snapshot" => \&git_snapshot,
 564        "object" => \&git_object,
 565        # those below don't need $project
 566        "opml" => \&git_opml,
 567        "project_list" => \&git_project_list,
 568        "project_index" => \&git_project_index,
 569);
 570
 571if (!defined $action) {
 572        if (defined $hash) {
 573                $action = git_get_type($hash);
 574        } elsif (defined $hash_base && defined $file_name) {
 575                $action = git_get_type("$hash_base:$file_name");
 576        } elsif (defined $project) {
 577                $action = 'summary';
 578        } else {
 579                $action = 'project_list';
 580        }
 581}
 582if (!defined($actions{$action})) {
 583        die_error(undef, "Unknown action");
 584}
 585if ($action !~ m/^(opml|project_list|project_index)$/ &&
 586    !$project) {
 587        die_error(undef, "Project needed");
 588}
 589$actions{$action}->();
 590exit;
 591
 592## ======================================================================
 593## action links
 594
 595sub href (%) {
 596        my %params = @_;
 597        # default is to use -absolute url() i.e. $my_uri
 598        my $href = $params{-full} ? $my_url : $my_uri;
 599
 600        # XXX: Warning: If you touch this, check the search form for updating,
 601        # too.
 602
 603        my @mapping = (
 604                project => "p",
 605                action => "a",
 606                file_name => "f",
 607                file_parent => "fp",
 608                hash => "h",
 609                hash_parent => "hp",
 610                hash_base => "hb",
 611                hash_parent_base => "hpb",
 612                page => "pg",
 613                order => "o",
 614                searchtext => "s",
 615                searchtype => "st",
 616                snapshot_format => "sf",
 617                extra_options => "opt",
 618                search_use_regexp => "sr",
 619        );
 620        my %mapping = @mapping;
 621
 622        $params{'project'} = $project unless exists $params{'project'};
 623
 624        if ($params{-replay}) {
 625                while (my ($name, $symbol) = each %mapping) {
 626                        if (!exists $params{$name}) {
 627                                # to allow for multivalued params we use arrayref form
 628                                $params{$name} = [ $cgi->param($symbol) ];
 629                        }
 630                }
 631        }
 632
 633        my ($use_pathinfo) = gitweb_check_feature('pathinfo');
 634        if ($use_pathinfo) {
 635                # use PATH_INFO for project name
 636                $href .= "/".esc_url($params{'project'}) if defined $params{'project'};
 637                delete $params{'project'};
 638
 639                # Summary just uses the project path URL
 640                if (defined $params{'action'} && $params{'action'} eq 'summary') {
 641                        delete $params{'action'};
 642                }
 643        }
 644
 645        # now encode the parameters explicitly
 646        my @result = ();
 647        for (my $i = 0; $i < @mapping; $i += 2) {
 648                my ($name, $symbol) = ($mapping[$i], $mapping[$i+1]);
 649                if (defined $params{$name}) {
 650                        if (ref($params{$name}) eq "ARRAY") {
 651                                foreach my $par (@{$params{$name}}) {
 652                                        push @result, $symbol . "=" . esc_param($par);
 653                                }
 654                        } else {
 655                                push @result, $symbol . "=" . esc_param($params{$name});
 656                        }
 657                }
 658        }
 659        $href .= "?" . join(';', @result) if scalar @result;
 660
 661        return $href;
 662}
 663
 664
 665## ======================================================================
 666## validation, quoting/unquoting and escaping
 667
 668sub validate_pathname {
 669        my $input = shift || return undef;
 670
 671        # no '.' or '..' as elements of path, i.e. no '.' nor '..'
 672        # at the beginning, at the end, and between slashes.
 673        # also this catches doubled slashes
 674        if ($input =~ m!(^|/)(|\.|\.\.)(/|$)!) {
 675                return undef;
 676        }
 677        # no null characters
 678        if ($input =~ m!\0!) {
 679                return undef;
 680        }
 681        return $input;
 682}
 683
 684sub validate_refname {
 685        my $input = shift || return undef;
 686
 687        # textual hashes are O.K.
 688        if ($input =~ m/^[0-9a-fA-F]{40}$/) {
 689                return $input;
 690        }
 691        # it must be correct pathname
 692        $input = validate_pathname($input)
 693                or return undef;
 694        # restrictions on ref name according to git-check-ref-format
 695        if ($input =~ m!(/\.|\.\.|[\000-\040\177 ~^:?*\[]|/$)!) {
 696                return undef;
 697        }
 698        return $input;
 699}
 700
 701# decode sequences of octets in utf8 into Perl's internal form,
 702# which is utf-8 with utf8 flag set if needed.  gitweb writes out
 703# in utf-8 thanks to "binmode STDOUT, ':utf8'" at beginning
 704sub to_utf8 {
 705        my $str = shift;
 706        if (utf8::valid($str)) {
 707                utf8::decode($str);
 708                return $str;
 709        } else {
 710                return decode($fallback_encoding, $str, Encode::FB_DEFAULT);
 711        }
 712}
 713
 714# quote unsafe chars, but keep the slash, even when it's not
 715# correct, but quoted slashes look too horrible in bookmarks
 716sub esc_param {
 717        my $str = shift;
 718        $str =~ s/([^A-Za-z0-9\-_.~()\/:@])/sprintf("%%%02X", ord($1))/eg;
 719        $str =~ s/\+/%2B/g;
 720        $str =~ s/ /\+/g;
 721        return $str;
 722}
 723
 724# quote unsafe chars in whole URL, so some charactrs cannot be quoted
 725sub esc_url {
 726        my $str = shift;
 727        $str =~ s/([^A-Za-z0-9\-_.~();\/;?:@&=])/sprintf("%%%02X", ord($1))/eg;
 728        $str =~ s/\+/%2B/g;
 729        $str =~ s/ /\+/g;
 730        return $str;
 731}
 732
 733# replace invalid utf8 character with SUBSTITUTION sequence
 734sub esc_html ($;%) {
 735        my $str = shift;
 736        my %opts = @_;
 737
 738        $str = to_utf8($str);
 739        $str = $cgi->escapeHTML($str);
 740        if ($opts{'-nbsp'}) {
 741                $str =~ s/ /&nbsp;/g;
 742        }
 743        $str =~ s|([[:cntrl:]])|(($1 ne "\t") ? quot_cec($1) : $1)|eg;
 744        return $str;
 745}
 746
 747# quote control characters and escape filename to HTML
 748sub esc_path {
 749        my $str = shift;
 750        my %opts = @_;
 751
 752        $str = to_utf8($str);
 753        $str = $cgi->escapeHTML($str);
 754        if ($opts{'-nbsp'}) {
 755                $str =~ s/ /&nbsp;/g;
 756        }
 757        $str =~ s|([[:cntrl:]])|quot_cec($1)|eg;
 758        return $str;
 759}
 760
 761# Make control characters "printable", using character escape codes (CEC)
 762sub quot_cec {
 763        my $cntrl = shift;
 764        my %opts = @_;
 765        my %es = ( # character escape codes, aka escape sequences
 766                "\t" => '\t',   # tab            (HT)
 767                "\n" => '\n',   # line feed      (LF)
 768                "\r" => '\r',   # carrige return (CR)
 769                "\f" => '\f',   # form feed      (FF)
 770                "\b" => '\b',   # backspace      (BS)
 771                "\a" => '\a',   # alarm (bell)   (BEL)
 772                "\e" => '\e',   # escape         (ESC)
 773                "\013" => '\v', # vertical tab   (VT)
 774                "\000" => '\0', # nul character  (NUL)
 775        );
 776        my $chr = ( (exists $es{$cntrl})
 777                    ? $es{$cntrl}
 778                    : sprintf('\%03o', ord($cntrl)) );
 779        if ($opts{-nohtml}) {
 780                return $chr;
 781        } else {
 782                return "<span class=\"cntrl\">$chr</span>";
 783        }
 784}
 785
 786# Alternatively use unicode control pictures codepoints,
 787# Unicode "printable representation" (PR)
 788sub quot_upr {
 789        my $cntrl = shift;
 790        my %opts = @_;
 791
 792        my $chr = sprintf('&#%04d;', 0x2400+ord($cntrl));
 793        if ($opts{-nohtml}) {
 794                return $chr;
 795        } else {
 796                return "<span class=\"cntrl\">$chr</span>";
 797        }
 798}
 799
 800# git may return quoted and escaped filenames
 801sub unquote {
 802        my $str = shift;
 803
 804        sub unq {
 805                my $seq = shift;
 806                my %es = ( # character escape codes, aka escape sequences
 807                        't' => "\t",   # tab            (HT, TAB)
 808                        'n' => "\n",   # newline        (NL)
 809                        'r' => "\r",   # return         (CR)
 810                        'f' => "\f",   # form feed      (FF)
 811                        'b' => "\b",   # backspace      (BS)
 812                        'a' => "\a",   # alarm (bell)   (BEL)
 813                        'e' => "\e",   # escape         (ESC)
 814                        'v' => "\013", # vertical tab   (VT)
 815                );
 816
 817                if ($seq =~ m/^[0-7]{1,3}$/) {
 818                        # octal char sequence
 819                        return chr(oct($seq));
 820                } elsif (exists $es{$seq}) {
 821                        # C escape sequence, aka character escape code
 822                        return $es{$seq};
 823                }
 824                # quoted ordinary character
 825                return $seq;
 826        }
 827
 828        if ($str =~ m/^"(.*)"$/) {
 829                # needs unquoting
 830                $str = $1;
 831                $str =~ s/\\([^0-7]|[0-7]{1,3})/unq($1)/eg;
 832        }
 833        return $str;
 834}
 835
 836# escape tabs (convert tabs to spaces)
 837sub untabify {
 838        my $line = shift;
 839
 840        while ((my $pos = index($line, "\t")) != -1) {
 841                if (my $count = (8 - ($pos % 8))) {
 842                        my $spaces = ' ' x $count;
 843                        $line =~ s/\t/$spaces/;
 844                }
 845        }
 846
 847        return $line;
 848}
 849
 850sub project_in_list {
 851        my $project = shift;
 852        my @list = git_get_projects_list();
 853        return @list && scalar(grep { $_->{'path'} eq $project } @list);
 854}
 855
 856## ----------------------------------------------------------------------
 857## HTML aware string manipulation
 858
 859# Try to chop given string on a word boundary between position
 860# $len and $len+$add_len. If there is no word boundary there,
 861# chop at $len+$add_len. Do not chop if chopped part plus ellipsis
 862# (marking chopped part) would be longer than given string.
 863sub chop_str {
 864        my $str = shift;
 865        my $len = shift;
 866        my $add_len = shift || 10;
 867        my $where = shift || 'right'; # 'left' | 'center' | 'right'
 868
 869        # Make sure perl knows it is utf8 encoded so we don't
 870        # cut in the middle of a utf8 multibyte char.
 871        $str = to_utf8($str);
 872
 873        # allow only $len chars, but don't cut a word if it would fit in $add_len
 874        # if it doesn't fit, cut it if it's still longer than the dots we would add
 875        # remove chopped character entities entirely
 876
 877        # when chopping in the middle, distribute $len into left and right part
 878        # return early if chopping wouldn't make string shorter
 879        if ($where eq 'center') {
 880                return $str if ($len + 5 >= length($str)); # filler is length 5
 881                $len = int($len/2);
 882        } else {
 883                return $str if ($len + 4 >= length($str)); # filler is length 4
 884        }
 885
 886        # regexps: ending and beginning with word part up to $add_len
 887        my $endre = qr/.{$len}\w{0,$add_len}/;
 888        my $begre = qr/\w{0,$add_len}.{$len}/;
 889
 890        if ($where eq 'left') {
 891                $str =~ m/^(.*?)($begre)$/;
 892                my ($lead, $body) = ($1, $2);
 893                if (length($lead) > 4) {
 894                        $body =~ s/^[^;]*;// if ($lead =~ m/&[^;]*$/);
 895                        $lead = " ...";
 896                }
 897                return "$lead$body";
 898
 899        } elsif ($where eq 'center') {
 900                $str =~ m/^($endre)(.*)$/;
 901                my ($left, $str)  = ($1, $2);
 902                $str =~ m/^(.*?)($begre)$/;
 903                my ($mid, $right) = ($1, $2);
 904                if (length($mid) > 5) {
 905                        $left  =~ s/&[^;]*$//;
 906                        $right =~ s/^[^;]*;// if ($mid =~ m/&[^;]*$/);
 907                        $mid = " ... ";
 908                }
 909                return "$left$mid$right";
 910
 911        } else {
 912                $str =~ m/^($endre)(.*)$/;
 913                my $body = $1;
 914                my $tail = $2;
 915                if (length($tail) > 4) {
 916                        $body =~ s/&[^;]*$//;
 917                        $tail = "... ";
 918                }
 919                return "$body$tail";
 920        }
 921}
 922
 923# takes the same arguments as chop_str, but also wraps a <span> around the
 924# result with a title attribute if it does get chopped. Additionally, the
 925# string is HTML-escaped.
 926sub chop_and_escape_str {
 927        my ($str) = @_;
 928
 929        my $chopped = chop_str(@_);
 930        if ($chopped eq $str) {
 931                return esc_html($chopped);
 932        } else {
 933                $str =~ s/([[:cntrl:]])/?/g;
 934                return $cgi->span({-title=>$str}, esc_html($chopped));
 935        }
 936}
 937
 938## ----------------------------------------------------------------------
 939## functions returning short strings
 940
 941# CSS class for given age value (in seconds)
 942sub age_class {
 943        my $age = shift;
 944
 945        if (!defined $age) {
 946                return "noage";
 947        } elsif ($age < 60*60*2) {
 948                return "age0";
 949        } elsif ($age < 60*60*24*2) {
 950                return "age1";
 951        } else {
 952                return "age2";
 953        }
 954}
 955
 956# convert age in seconds to "nn units ago" string
 957sub age_string {
 958        my $age = shift;
 959        my $age_str;
 960
 961        if ($age > 60*60*24*365*2) {
 962                $age_str = (int $age/60/60/24/365);
 963                $age_str .= " years ago";
 964        } elsif ($age > 60*60*24*(365/12)*2) {
 965                $age_str = int $age/60/60/24/(365/12);
 966                $age_str .= " months ago";
 967        } elsif ($age > 60*60*24*7*2) {
 968                $age_str = int $age/60/60/24/7;
 969                $age_str .= " weeks ago";
 970        } elsif ($age > 60*60*24*2) {
 971                $age_str = int $age/60/60/24;
 972                $age_str .= " days ago";
 973        } elsif ($age > 60*60*2) {
 974                $age_str = int $age/60/60;
 975                $age_str .= " hours ago";
 976        } elsif ($age > 60*2) {
 977                $age_str = int $age/60;
 978                $age_str .= " min ago";
 979        } elsif ($age > 2) {
 980                $age_str = int $age;
 981                $age_str .= " sec ago";
 982        } else {
 983                $age_str .= " right now";
 984        }
 985        return $age_str;
 986}
 987
 988use constant {
 989        S_IFINVALID => 0030000,
 990        S_IFGITLINK => 0160000,
 991};
 992
 993# submodule/subproject, a commit object reference
 994sub S_ISGITLINK($) {
 995        my $mode = shift;
 996
 997        return (($mode & S_IFMT) == S_IFGITLINK)
 998}
 999
1000# convert file mode in octal to symbolic file mode string
1001sub mode_str {
1002        my $mode = oct shift;
1003
1004        if (S_ISGITLINK($mode)) {
1005                return 'm---------';
1006        } elsif (S_ISDIR($mode & S_IFMT)) {
1007                return 'drwxr-xr-x';
1008        } elsif (S_ISLNK($mode)) {
1009                return 'lrwxrwxrwx';
1010        } elsif (S_ISREG($mode)) {
1011                # git cares only about the executable bit
1012                if ($mode & S_IXUSR) {
1013                        return '-rwxr-xr-x';
1014                } else {
1015                        return '-rw-r--r--';
1016                };
1017        } else {
1018                return '----------';
1019        }
1020}
1021
1022# convert file mode in octal to file type string
1023sub file_type {
1024        my $mode = shift;
1025
1026        if ($mode !~ m/^[0-7]+$/) {
1027                return $mode;
1028        } else {
1029                $mode = oct $mode;
1030        }
1031
1032        if (S_ISGITLINK($mode)) {
1033                return "submodule";
1034        } elsif (S_ISDIR($mode & S_IFMT)) {
1035                return "directory";
1036        } elsif (S_ISLNK($mode)) {
1037                return "symlink";
1038        } elsif (S_ISREG($mode)) {
1039                return "file";
1040        } else {
1041                return "unknown";
1042        }
1043}
1044
1045# convert file mode in octal to file type description string
1046sub file_type_long {
1047        my $mode = shift;
1048
1049        if ($mode !~ m/^[0-7]+$/) {
1050                return $mode;
1051        } else {
1052                $mode = oct $mode;
1053        }
1054
1055        if (S_ISGITLINK($mode)) {
1056                return "submodule";
1057        } elsif (S_ISDIR($mode & S_IFMT)) {
1058                return "directory";
1059        } elsif (S_ISLNK($mode)) {
1060                return "symlink";
1061        } elsif (S_ISREG($mode)) {
1062                if ($mode & S_IXUSR) {
1063                        return "executable";
1064                } else {
1065                        return "file";
1066                };
1067        } else {
1068                return "unknown";
1069        }
1070}
1071
1072
1073## ----------------------------------------------------------------------
1074## functions returning short HTML fragments, or transforming HTML fragments
1075## which don't belong to other sections
1076
1077# format line of commit message.
1078sub format_log_line_html {
1079        my $line = shift;
1080
1081        $line = esc_html($line, -nbsp=>1);
1082        if ($line =~ m/([0-9a-fA-F]{8,40})/) {
1083                my $hash_text = $1;
1084                my $link =
1085                        $cgi->a({-href => href(action=>"object", hash=>$hash_text),
1086                                -class => "text"}, $hash_text);
1087                $line =~ s/$hash_text/$link/;
1088        }
1089        return $line;
1090}
1091
1092# format marker of refs pointing to given object
1093sub format_ref_marker {
1094        my ($refs, $id) = @_;
1095        my $markers = '';
1096
1097        if (defined $refs->{$id}) {
1098                foreach my $ref (@{$refs->{$id}}) {
1099                        my ($type, $name) = qw();
1100                        # e.g. tags/v2.6.11 or heads/next
1101                        if ($ref =~ m!^(.*?)s?/(.*)$!) {
1102                                $type = $1;
1103                                $name = $2;
1104                        } else {
1105                                $type = "ref";
1106                                $name = $ref;
1107                        }
1108
1109                        $markers .= " <span class=\"$type\" title=\"$ref\">" .
1110                                    esc_html($name) . "</span>";
1111                }
1112        }
1113
1114        if ($markers) {
1115                return ' <span class="refs">'. $markers . '</span>';
1116        } else {
1117                return "";
1118        }
1119}
1120
1121# format, perhaps shortened and with markers, title line
1122sub format_subject_html {
1123        my ($long, $short, $href, $extra) = @_;
1124        $extra = '' unless defined($extra);
1125
1126        if (length($short) < length($long)) {
1127                return $cgi->a({-href => $href, -class => "list subject",
1128                                -title => to_utf8($long)},
1129                       esc_html($short) . $extra);
1130        } else {
1131                return $cgi->a({-href => $href, -class => "list subject"},
1132                       esc_html($long)  . $extra);
1133        }
1134}
1135
1136# format git diff header line, i.e. "diff --(git|combined|cc) ..."
1137sub format_git_diff_header_line {
1138        my $line = shift;
1139        my $diffinfo = shift;
1140        my ($from, $to) = @_;
1141
1142        if ($diffinfo->{'nparents'}) {
1143                # combined diff
1144                $line =~ s!^(diff (.*?) )"?.*$!$1!;
1145                if ($to->{'href'}) {
1146                        $line .= $cgi->a({-href => $to->{'href'}, -class => "path"},
1147                                         esc_path($to->{'file'}));
1148                } else { # file was deleted (no href)
1149                        $line .= esc_path($to->{'file'});
1150                }
1151        } else {
1152                # "ordinary" diff
1153                $line =~ s!^(diff (.*?) )"?a/.*$!$1!;
1154                if ($from->{'href'}) {
1155                        $line .= $cgi->a({-href => $from->{'href'}, -class => "path"},
1156                                         'a/' . esc_path($from->{'file'}));
1157                } else { # file was added (no href)
1158                        $line .= 'a/' . esc_path($from->{'file'});
1159                }
1160                $line .= ' ';
1161                if ($to->{'href'}) {
1162                        $line .= $cgi->a({-href => $to->{'href'}, -class => "path"},
1163                                         'b/' . esc_path($to->{'file'}));
1164                } else { # file was deleted
1165                        $line .= 'b/' . esc_path($to->{'file'});
1166                }
1167        }
1168
1169        return "<div class=\"diff header\">$line</div>\n";
1170}
1171
1172# format extended diff header line, before patch itself
1173sub format_extended_diff_header_line {
1174        my $line = shift;
1175        my $diffinfo = shift;
1176        my ($from, $to) = @_;
1177
1178        # match <path>
1179        if ($line =~ s!^((copy|rename) from ).*$!$1! && $from->{'href'}) {
1180                $line .= $cgi->a({-href=>$from->{'href'}, -class=>"path"},
1181                                       esc_path($from->{'file'}));
1182        }
1183        if ($line =~ s!^((copy|rename) to ).*$!$1! && $to->{'href'}) {
1184                $line .= $cgi->a({-href=>$to->{'href'}, -class=>"path"},
1185                                 esc_path($to->{'file'}));
1186        }
1187        # match single <mode>
1188        if ($line =~ m/\s(\d{6})$/) {
1189                $line .= '<span class="info"> (' .
1190                         file_type_long($1) .
1191                         ')</span>';
1192        }
1193        # match <hash>
1194        if ($line =~ m/^index [0-9a-fA-F]{40},[0-9a-fA-F]{40}/) {
1195                # can match only for combined diff
1196                $line = 'index ';
1197                for (my $i = 0; $i < $diffinfo->{'nparents'}; $i++) {
1198                        if ($from->{'href'}[$i]) {
1199                                $line .= $cgi->a({-href=>$from->{'href'}[$i],
1200                                                  -class=>"hash"},
1201                                                 substr($diffinfo->{'from_id'}[$i],0,7));
1202                        } else {
1203                                $line .= '0' x 7;
1204                        }
1205                        # separator
1206                        $line .= ',' if ($i < $diffinfo->{'nparents'} - 1);
1207                }
1208                $line .= '..';
1209                if ($to->{'href'}) {
1210                        $line .= $cgi->a({-href=>$to->{'href'}, -class=>"hash"},
1211                                         substr($diffinfo->{'to_id'},0,7));
1212                } else {
1213                        $line .= '0' x 7;
1214                }
1215
1216        } elsif ($line =~ m/^index [0-9a-fA-F]{40}..[0-9a-fA-F]{40}/) {
1217                # can match only for ordinary diff
1218                my ($from_link, $to_link);
1219                if ($from->{'href'}) {
1220                        $from_link = $cgi->a({-href=>$from->{'href'}, -class=>"hash"},
1221                                             substr($diffinfo->{'from_id'},0,7));
1222                } else {
1223                        $from_link = '0' x 7;
1224                }
1225                if ($to->{'href'}) {
1226                        $to_link = $cgi->a({-href=>$to->{'href'}, -class=>"hash"},
1227                                           substr($diffinfo->{'to_id'},0,7));
1228                } else {
1229                        $to_link = '0' x 7;
1230                }
1231                my ($from_id, $to_id) = ($diffinfo->{'from_id'}, $diffinfo->{'to_id'});
1232                $line =~ s!$from_id\.\.$to_id!$from_link..$to_link!;
1233        }
1234
1235        return $line . "<br/>\n";
1236}
1237
1238# format from-file/to-file diff header
1239sub format_diff_from_to_header {
1240        my ($from_line, $to_line, $diffinfo, $from, $to, @parents) = @_;
1241        my $line;
1242        my $result = '';
1243
1244        $line = $from_line;
1245        #assert($line =~ m/^---/) if DEBUG;
1246        # no extra formatting for "^--- /dev/null"
1247        if (! $diffinfo->{'nparents'}) {
1248                # ordinary (single parent) diff
1249                if ($line =~ m!^--- "?a/!) {
1250                        if ($from->{'href'}) {
1251                                $line = '--- a/' .
1252                                        $cgi->a({-href=>$from->{'href'}, -class=>"path"},
1253                                                esc_path($from->{'file'}));
1254                        } else {
1255                                $line = '--- a/' .
1256                                        esc_path($from->{'file'});
1257                        }
1258                }
1259                $result .= qq!<div class="diff from_file">$line</div>\n!;
1260
1261        } else {
1262                # combined diff (merge commit)
1263                for (my $i = 0; $i < $diffinfo->{'nparents'}; $i++) {
1264                        if ($from->{'href'}[$i]) {
1265                                $line = '--- ' .
1266                                        $cgi->a({-href=>href(action=>"blobdiff",
1267                                                             hash_parent=>$diffinfo->{'from_id'}[$i],
1268                                                             hash_parent_base=>$parents[$i],
1269                                                             file_parent=>$from->{'file'}[$i],
1270                                                             hash=>$diffinfo->{'to_id'},
1271                                                             hash_base=>$hash,
1272                                                             file_name=>$to->{'file'}),
1273                                                 -class=>"path",
1274                                                 -title=>"diff" . ($i+1)},
1275                                                $i+1) .
1276                                        '/' .
1277                                        $cgi->a({-href=>$from->{'href'}[$i], -class=>"path"},
1278                                                esc_path($from->{'file'}[$i]));
1279                        } else {
1280                                $line = '--- /dev/null';
1281                        }
1282                        $result .= qq!<div class="diff from_file">$line</div>\n!;
1283                }
1284        }
1285
1286        $line = $to_line;
1287        #assert($line =~ m/^\+\+\+/) if DEBUG;
1288        # no extra formatting for "^+++ /dev/null"
1289        if ($line =~ m!^\+\+\+ "?b/!) {
1290                if ($to->{'href'}) {
1291                        $line = '+++ b/' .
1292                                $cgi->a({-href=>$to->{'href'}, -class=>"path"},
1293                                        esc_path($to->{'file'}));
1294                } else {
1295                        $line = '+++ b/' .
1296                                esc_path($to->{'file'});
1297                }
1298        }
1299        $result .= qq!<div class="diff to_file">$line</div>\n!;
1300
1301        return $result;
1302}
1303
1304# create note for patch simplified by combined diff
1305sub format_diff_cc_simplified {
1306        my ($diffinfo, @parents) = @_;
1307        my $result = '';
1308
1309        $result .= "<div class=\"diff header\">" .
1310                   "diff --cc ";
1311        if (!is_deleted($diffinfo)) {
1312                $result .= $cgi->a({-href => href(action=>"blob",
1313                                                  hash_base=>$hash,
1314                                                  hash=>$diffinfo->{'to_id'},
1315                                                  file_name=>$diffinfo->{'to_file'}),
1316                                    -class => "path"},
1317                                   esc_path($diffinfo->{'to_file'}));
1318        } else {
1319                $result .= esc_path($diffinfo->{'to_file'});
1320        }
1321        $result .= "</div>\n" . # class="diff header"
1322                   "<div class=\"diff nodifferences\">" .
1323                   "Simple merge" .
1324                   "</div>\n"; # class="diff nodifferences"
1325
1326        return $result;
1327}
1328
1329# format patch (diff) line (not to be used for diff headers)
1330sub format_diff_line {
1331        my $line = shift;
1332        my ($from, $to) = @_;
1333        my $diff_class = "";
1334
1335        chomp $line;
1336
1337        if ($from && $to && ref($from->{'href'}) eq "ARRAY") {
1338                # combined diff
1339                my $prefix = substr($line, 0, scalar @{$from->{'href'}});
1340                if ($line =~ m/^\@{3}/) {
1341                        $diff_class = " chunk_header";
1342                } elsif ($line =~ m/^\\/) {
1343                        $diff_class = " incomplete";
1344                } elsif ($prefix =~ tr/+/+/) {
1345                        $diff_class = " add";
1346                } elsif ($prefix =~ tr/-/-/) {
1347                        $diff_class = " rem";
1348                }
1349        } else {
1350                # assume ordinary diff
1351                my $char = substr($line, 0, 1);
1352                if ($char eq '+') {
1353                        $diff_class = " add";
1354                } elsif ($char eq '-') {
1355                        $diff_class = " rem";
1356                } elsif ($char eq '@') {
1357                        $diff_class = " chunk_header";
1358                } elsif ($char eq "\\") {
1359                        $diff_class = " incomplete";
1360                }
1361        }
1362        $line = untabify($line);
1363        if ($from && $to && $line =~ m/^\@{2} /) {
1364                my ($from_text, $from_start, $from_lines, $to_text, $to_start, $to_lines, $section) =
1365                        $line =~ m/^\@{2} (-(\d+)(?:,(\d+))?) (\+(\d+)(?:,(\d+))?) \@{2}(.*)$/;
1366
1367                $from_lines = 0 unless defined $from_lines;
1368                $to_lines   = 0 unless defined $to_lines;
1369
1370                if ($from->{'href'}) {
1371                        $from_text = $cgi->a({-href=>"$from->{'href'}#l$from_start",
1372                                             -class=>"list"}, $from_text);
1373                }
1374                if ($to->{'href'}) {
1375                        $to_text   = $cgi->a({-href=>"$to->{'href'}#l$to_start",
1376                                             -class=>"list"}, $to_text);
1377                }
1378                $line = "<span class=\"chunk_info\">@@ $from_text $to_text @@</span>" .
1379                        "<span class=\"section\">" . esc_html($section, -nbsp=>1) . "</span>";
1380                return "<div class=\"diff$diff_class\">$line</div>\n";
1381        } elsif ($from && $to && $line =~ m/^\@{3}/) {
1382                my ($prefix, $ranges, $section) = $line =~ m/^(\@+) (.*?) \@+(.*)$/;
1383                my (@from_text, @from_start, @from_nlines, $to_text, $to_start, $to_nlines);
1384
1385                @from_text = split(' ', $ranges);
1386                for (my $i = 0; $i < @from_text; ++$i) {
1387                        ($from_start[$i], $from_nlines[$i]) =
1388                                (split(',', substr($from_text[$i], 1)), 0);
1389                }
1390
1391                $to_text   = pop @from_text;
1392                $to_start  = pop @from_start;
1393                $to_nlines = pop @from_nlines;
1394
1395                $line = "<span class=\"chunk_info\">$prefix ";
1396                for (my $i = 0; $i < @from_text; ++$i) {
1397                        if ($from->{'href'}[$i]) {
1398                                $line .= $cgi->a({-href=>"$from->{'href'}[$i]#l$from_start[$i]",
1399                                                  -class=>"list"}, $from_text[$i]);
1400                        } else {
1401                                $line .= $from_text[$i];
1402                        }
1403                        $line .= " ";
1404                }
1405                if ($to->{'href'}) {
1406                        $line .= $cgi->a({-href=>"$to->{'href'}#l$to_start",
1407                                          -class=>"list"}, $to_text);
1408                } else {
1409                        $line .= $to_text;
1410                }
1411                $line .= " $prefix</span>" .
1412                         "<span class=\"section\">" . esc_html($section, -nbsp=>1) . "</span>";
1413                return "<div class=\"diff$diff_class\">$line</div>\n";
1414        }
1415        return "<div class=\"diff$diff_class\">" . esc_html($line, -nbsp=>1) . "</div>\n";
1416}
1417
1418# Generates undef or something like "_snapshot_" or "snapshot (_tbz2_ _zip_)",
1419# linked.  Pass the hash of the tree/commit to snapshot.
1420sub format_snapshot_links {
1421        my ($hash) = @_;
1422        my @snapshot_fmts = gitweb_check_feature('snapshot');
1423        @snapshot_fmts = filter_snapshot_fmts(@snapshot_fmts);
1424        my $num_fmts = @snapshot_fmts;
1425        if ($num_fmts > 1) {
1426                # A parenthesized list of links bearing format names.
1427                # e.g. "snapshot (_tar.gz_ _zip_)"
1428                return "snapshot (" . join(' ', map
1429                        $cgi->a({
1430                                -href => href(
1431                                        action=>"snapshot",
1432                                        hash=>$hash,
1433                                        snapshot_format=>$_
1434                                )
1435                        }, $known_snapshot_formats{$_}{'display'})
1436                , @snapshot_fmts) . ")";
1437        } elsif ($num_fmts == 1) {
1438                # A single "snapshot" link whose tooltip bears the format name.
1439                # i.e. "_snapshot_"
1440                my ($fmt) = @snapshot_fmts;
1441                return
1442                        $cgi->a({
1443                                -href => href(
1444                                        action=>"snapshot",
1445                                        hash=>$hash,
1446                                        snapshot_format=>$fmt
1447                                ),
1448                                -title => "in format: $known_snapshot_formats{$fmt}{'display'}"
1449                        }, "snapshot");
1450        } else { # $num_fmts == 0
1451                return undef;
1452        }
1453}
1454
1455## ......................................................................
1456## functions returning values to be passed, perhaps after some
1457## transformation, to other functions; e.g. returning arguments to href()
1458
1459# returns hash to be passed to href to generate gitweb URL
1460# in -title key it returns description of link
1461sub get_feed_info {
1462        my $format = shift || 'Atom';
1463        my %res = (action => lc($format));
1464
1465        # feed links are possible only for project views
1466        return unless (defined $project);
1467        # some views should link to OPML, or to generic project feed,
1468        # or don't have specific feed yet (so they should use generic)
1469        return if ($action =~ /^(?:tags|heads|forks|tag|search)$/x);
1470
1471        my $branch;
1472        # branches refs uses 'refs/heads/' prefix (fullname) to differentiate
1473        # from tag links; this also makes possible to detect branch links
1474        if ((defined $hash_base && $hash_base =~ m!^refs/heads/(.*)$!) ||
1475            (defined $hash      && $hash      =~ m!^refs/heads/(.*)$!)) {
1476                $branch = $1;
1477        }
1478        # find log type for feed description (title)
1479        my $type = 'log';
1480        if (defined $file_name) {
1481                $type  = "history of $file_name";
1482                $type .= "/" if ($action eq 'tree');
1483                $type .= " on '$branch'" if (defined $branch);
1484        } else {
1485                $type = "log of $branch" if (defined $branch);
1486        }
1487
1488        $res{-title} = $type;
1489        $res{'hash'} = (defined $branch ? "refs/heads/$branch" : undef);
1490        $res{'file_name'} = $file_name;
1491
1492        return %res;
1493}
1494
1495## ----------------------------------------------------------------------
1496## git utility subroutines, invoking git commands
1497
1498# returns path to the core git executable and the --git-dir parameter as list
1499sub git_cmd {
1500        return $GIT, '--git-dir='.$git_dir;
1501}
1502
1503# returns path to the core git executable and the --git-dir parameter as string
1504sub git_cmd_str {
1505        return join(' ', git_cmd());
1506}
1507
1508# get HEAD ref of given project as hash
1509sub git_get_head_hash {
1510        my $project = shift;
1511        my $o_git_dir = $git_dir;
1512        my $retval = undef;
1513        $git_dir = "$projectroot/$project";
1514        if (open my $fd, "-|", git_cmd(), "rev-parse", "--verify", "HEAD") {
1515                my $head = <$fd>;
1516                close $fd;
1517                if (defined $head && $head =~ /^([0-9a-fA-F]{40})$/) {
1518                        $retval = $1;
1519                }
1520        }
1521        if (defined $o_git_dir) {
1522                $git_dir = $o_git_dir;
1523        }
1524        return $retval;
1525}
1526
1527# get type of given object
1528sub git_get_type {
1529        my $hash = shift;
1530
1531        open my $fd, "-|", git_cmd(), "cat-file", '-t', $hash or return;
1532        my $type = <$fd>;
1533        close $fd or return;
1534        chomp $type;
1535        return $type;
1536}
1537
1538# repository configuration
1539our $config_file = '';
1540our %config;
1541
1542# store multiple values for single key as anonymous array reference
1543# single values stored directly in the hash, not as [ <value> ]
1544sub hash_set_multi {
1545        my ($hash, $key, $value) = @_;
1546
1547        if (!exists $hash->{$key}) {
1548                $hash->{$key} = $value;
1549        } elsif (!ref $hash->{$key}) {
1550                $hash->{$key} = [ $hash->{$key}, $value ];
1551        } else {
1552                push @{$hash->{$key}}, $value;
1553        }
1554}
1555
1556# return hash of git project configuration
1557# optionally limited to some section, e.g. 'gitweb'
1558sub git_parse_project_config {
1559        my $section_regexp = shift;
1560        my %config;
1561
1562        local $/ = "\0";
1563
1564        open my $fh, "-|", git_cmd(), "config", '-z', '-l',
1565                or return;
1566
1567        while (my $keyval = <$fh>) {
1568                chomp $keyval;
1569                my ($key, $value) = split(/\n/, $keyval, 2);
1570
1571                hash_set_multi(\%config, $key, $value)
1572                        if (!defined $section_regexp || $key =~ /^(?:$section_regexp)\./o);
1573        }
1574        close $fh;
1575
1576        return %config;
1577}
1578
1579# convert config value to boolean, 'true' or 'false'
1580# no value, number > 0, 'true' and 'yes' values are true
1581# rest of values are treated as false (never as error)
1582sub config_to_bool {
1583        my $val = shift;
1584
1585        # strip leading and trailing whitespace
1586        $val =~ s/^\s+//;
1587        $val =~ s/\s+$//;
1588
1589        return (!defined $val ||               # section.key
1590                ($val =~ /^\d+$/ && $val) ||   # section.key = 1
1591                ($val =~ /^(?:true|yes)$/i));  # section.key = true
1592}
1593
1594# convert config value to simple decimal number
1595# an optional value suffix of 'k', 'm', or 'g' will cause the value
1596# to be multiplied by 1024, 1048576, or 1073741824
1597sub config_to_int {
1598        my $val = shift;
1599
1600        # strip leading and trailing whitespace
1601        $val =~ s/^\s+//;
1602        $val =~ s/\s+$//;
1603
1604        if (my ($num, $unit) = ($val =~ /^([0-9]*)([kmg])$/i)) {
1605                $unit = lc($unit);
1606                # unknown unit is treated as 1
1607                return $num * ($unit eq 'g' ? 1073741824 :
1608                               $unit eq 'm' ?    1048576 :
1609                               $unit eq 'k' ?       1024 : 1);
1610        }
1611        return $val;
1612}
1613
1614# convert config value to array reference, if needed
1615sub config_to_multi {
1616        my $val = shift;
1617
1618        return ref($val) ? $val : (defined($val) ? [ $val ] : []);
1619}
1620
1621sub git_get_project_config {
1622        my ($key, $type) = @_;
1623
1624        # key sanity check
1625        return unless ($key);
1626        $key =~ s/^gitweb\.//;
1627        return if ($key =~ m/\W/);
1628
1629        # type sanity check
1630        if (defined $type) {
1631                $type =~ s/^--//;
1632                $type = undef
1633                        unless ($type eq 'bool' || $type eq 'int');
1634        }
1635
1636        # get config
1637        if (!defined $config_file ||
1638            $config_file ne "$git_dir/config") {
1639                %config = git_parse_project_config('gitweb');
1640                $config_file = "$git_dir/config";
1641        }
1642
1643        # ensure given type
1644        if (!defined $type) {
1645                return $config{"gitweb.$key"};
1646        } elsif ($type eq 'bool') {
1647                # backward compatibility: 'git config --bool' returns true/false
1648                return config_to_bool($config{"gitweb.$key"}) ? 'true' : 'false';
1649        } elsif ($type eq 'int') {
1650                return config_to_int($config{"gitweb.$key"});
1651        }
1652        return $config{"gitweb.$key"};
1653}
1654
1655# get hash of given path at given ref
1656sub git_get_hash_by_path {
1657        my $base = shift;
1658        my $path = shift || return undef;
1659        my $type = shift;
1660
1661        $path =~ s,/+$,,;
1662
1663        open my $fd, "-|", git_cmd(), "ls-tree", $base, "--", $path
1664                or die_error(undef, "Open git-ls-tree failed");
1665        my $line = <$fd>;
1666        close $fd or return undef;
1667
1668        if (!defined $line) {
1669                # there is no tree or hash given by $path at $base
1670                return undef;
1671        }
1672
1673        #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
1674        $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t/;
1675        if (defined $type && $type ne $2) {
1676                # type doesn't match
1677                return undef;
1678        }
1679        return $3;
1680}
1681
1682# get path of entry with given hash at given tree-ish (ref)
1683# used to get 'from' filename for combined diff (merge commit) for renames
1684sub git_get_path_by_hash {
1685        my $base = shift || return;
1686        my $hash = shift || return;
1687
1688        local $/ = "\0";
1689
1690        open my $fd, "-|", git_cmd(), "ls-tree", '-r', '-t', '-z', $base
1691                or return undef;
1692        while (my $line = <$fd>) {
1693                chomp $line;
1694
1695                #'040000 tree 595596a6a9117ddba9fe379b6b012b558bac8423  gitweb'
1696                #'100644 blob e02e90f0429be0d2a69b76571101f20b8f75530f  gitweb/README'
1697                if ($line =~ m/(?:[0-9]+) (?:.+) $hash\t(.+)$/) {
1698                        close $fd;
1699                        return $1;
1700                }
1701        }
1702        close $fd;
1703        return undef;
1704}
1705
1706## ......................................................................
1707## git utility functions, directly accessing git repository
1708
1709sub git_get_project_description {
1710        my $path = shift;
1711
1712        $git_dir = "$projectroot/$path";
1713        open my $fd, "$git_dir/description"
1714                or return git_get_project_config('description');
1715        my $descr = <$fd>;
1716        close $fd;
1717        if (defined $descr) {
1718                chomp $descr;
1719        }
1720        return $descr;
1721}
1722
1723sub git_get_project_url_list {
1724        my $path = shift;
1725
1726        $git_dir = "$projectroot/$path";
1727        open my $fd, "$git_dir/cloneurl"
1728                or return wantarray ?
1729                @{ config_to_multi(git_get_project_config('url')) } :
1730                   config_to_multi(git_get_project_config('url'));
1731        my @git_project_url_list = map { chomp; $_ } <$fd>;
1732        close $fd;
1733
1734        return wantarray ? @git_project_url_list : \@git_project_url_list;
1735}
1736
1737sub git_get_projects_list {
1738        my ($filter) = @_;
1739        my @list;
1740
1741        $filter ||= '';
1742        $filter =~ s/\.git$//;
1743
1744        my ($check_forks) = gitweb_check_feature('forks');
1745
1746        if (-d $projects_list) {
1747                # search in directory
1748                my $dir = $projects_list . ($filter ? "/$filter" : '');
1749                # remove the trailing "/"
1750                $dir =~ s!/+$!!;
1751                my $pfxlen = length("$dir");
1752                my $pfxdepth = ($dir =~ tr!/!!);
1753
1754                File::Find::find({
1755                        follow_fast => 1, # follow symbolic links
1756                        follow_skip => 2, # ignore duplicates
1757                        dangling_symlinks => 0, # ignore dangling symlinks, silently
1758                        wanted => sub {
1759                                # skip project-list toplevel, if we get it.
1760                                return if (m!^[/.]$!);
1761                                # only directories can be git repositories
1762                                return unless (-d $_);
1763                                # don't traverse too deep (Find is super slow on os x)
1764                                if (($File::Find::name =~ tr!/!!) - $pfxdepth > $project_maxdepth) {
1765                                        $File::Find::prune = 1;
1766                                        return;
1767                                }
1768
1769                                my $subdir = substr($File::Find::name, $pfxlen + 1);
1770                                # we check related file in $projectroot
1771                                if ($check_forks and $subdir =~ m#/.#) {
1772                                        $File::Find::prune = 1;
1773                                } elsif (check_export_ok("$projectroot/$filter/$subdir")) {
1774                                        push @list, { path => ($filter ? "$filter/" : '') . $subdir };
1775                                        $File::Find::prune = 1;
1776                                }
1777                        },
1778                }, "$dir");
1779
1780        } elsif (-f $projects_list) {
1781                # read from file(url-encoded):
1782                # 'git%2Fgit.git Linus+Torvalds'
1783                # 'libs%2Fklibc%2Fklibc.git H.+Peter+Anvin'
1784                # 'linux%2Fhotplug%2Fudev.git Greg+Kroah-Hartman'
1785                my %paths;
1786                open my ($fd), $projects_list or return;
1787        PROJECT:
1788                while (my $line = <$fd>) {
1789                        chomp $line;
1790                        my ($path, $owner) = split ' ', $line;
1791                        $path = unescape($path);
1792                        $owner = unescape($owner);
1793                        if (!defined $path) {
1794                                next;
1795                        }
1796                        if ($filter ne '') {
1797                                # looking for forks;
1798                                my $pfx = substr($path, 0, length($filter));
1799                                if ($pfx ne $filter) {
1800                                        next PROJECT;
1801                                }
1802                                my $sfx = substr($path, length($filter));
1803                                if ($sfx !~ /^\/.*\.git$/) {
1804                                        next PROJECT;
1805                                }
1806                        } elsif ($check_forks) {
1807                        PATH:
1808                                foreach my $filter (keys %paths) {
1809                                        # looking for forks;
1810                                        my $pfx = substr($path, 0, length($filter));
1811                                        if ($pfx ne $filter) {
1812                                                next PATH;
1813                                        }
1814                                        my $sfx = substr($path, length($filter));
1815                                        if ($sfx !~ /^\/.*\.git$/) {
1816                                                next PATH;
1817                                        }
1818                                        # is a fork, don't include it in
1819                                        # the list
1820                                        next PROJECT;
1821                                }
1822                        }
1823                        if (check_export_ok("$projectroot/$path")) {
1824                                my $pr = {
1825                                        path => $path,
1826                                        owner => to_utf8($owner),
1827                                };
1828                                push @list, $pr;
1829                                (my $forks_path = $path) =~ s/\.git$//;
1830                                $paths{$forks_path}++;
1831                        }
1832                }
1833                close $fd;
1834        }
1835        return @list;
1836}
1837
1838our $gitweb_project_owner = undef;
1839sub git_get_project_list_from_file {
1840
1841        return if (defined $gitweb_project_owner);
1842
1843        $gitweb_project_owner = {};
1844        # read from file (url-encoded):
1845        # 'git%2Fgit.git Linus+Torvalds'
1846        # 'libs%2Fklibc%2Fklibc.git H.+Peter+Anvin'
1847        # 'linux%2Fhotplug%2Fudev.git Greg+Kroah-Hartman'
1848        if (-f $projects_list) {
1849                open (my $fd , $projects_list);
1850                while (my $line = <$fd>) {
1851                        chomp $line;
1852                        my ($pr, $ow) = split ' ', $line;
1853                        $pr = unescape($pr);
1854                        $ow = unescape($ow);
1855                        $gitweb_project_owner->{$pr} = to_utf8($ow);
1856                }
1857                close $fd;
1858        }
1859}
1860
1861sub git_get_project_owner {
1862        my $project = shift;
1863        my $owner;
1864
1865        return undef unless $project;
1866        $git_dir = "$projectroot/$project";
1867
1868        if (!defined $gitweb_project_owner) {
1869                git_get_project_list_from_file();
1870        }
1871
1872        if (exists $gitweb_project_owner->{$project}) {
1873                $owner = $gitweb_project_owner->{$project};
1874        }
1875        if (!defined $owner){
1876                $owner = git_get_project_config('owner');
1877        }
1878        if (!defined $owner) {
1879                $owner = get_file_owner("$git_dir");
1880        }
1881
1882        return $owner;
1883}
1884
1885sub git_get_last_activity {
1886        my ($path) = @_;
1887        my $fd;
1888
1889        $git_dir = "$projectroot/$path";
1890        open($fd, "-|", git_cmd(), 'for-each-ref',
1891             '--format=%(committer)',
1892             '--sort=-committerdate',
1893             '--count=1',
1894             'refs/heads') or return;
1895        my $most_recent = <$fd>;
1896        close $fd or return;
1897        if (defined $most_recent &&
1898            $most_recent =~ / (\d+) [-+][01]\d\d\d$/) {
1899                my $timestamp = $1;
1900                my $age = time - $timestamp;
1901                return ($age, age_string($age));
1902        }
1903        return (undef, undef);
1904}
1905
1906sub git_get_references {
1907        my $type = shift || "";
1908        my %refs;
1909        # 5dc01c595e6c6ec9ccda4f6f69c131c0dd945f8c refs/tags/v2.6.11
1910        # c39ae07f393806ccf406ef966e9a15afc43cc36a refs/tags/v2.6.11^{}
1911        open my $fd, "-|", git_cmd(), "show-ref", "--dereference",
1912                ($type ? ("--", "refs/$type") : ()) # use -- <pattern> if $type
1913                or return;
1914
1915        while (my $line = <$fd>) {
1916                chomp $line;
1917                if ($line =~ m!^([0-9a-fA-F]{40})\srefs/($type/?[^^]+)!) {
1918                        if (defined $refs{$1}) {
1919                                push @{$refs{$1}}, $2;
1920                        } else {
1921                                $refs{$1} = [ $2 ];
1922                        }
1923                }
1924        }
1925        close $fd or return;
1926        return \%refs;
1927}
1928
1929sub git_get_rev_name_tags {
1930        my $hash = shift || return undef;
1931
1932        open my $fd, "-|", git_cmd(), "name-rev", "--tags", $hash
1933                or return;
1934        my $name_rev = <$fd>;
1935        close $fd;
1936
1937        if ($name_rev =~ m|^$hash tags/(.*)$|) {
1938                return $1;
1939        } else {
1940                # catches also '$hash undefined' output
1941                return undef;
1942        }
1943}
1944
1945## ----------------------------------------------------------------------
1946## parse to hash functions
1947
1948sub parse_date {
1949        my $epoch = shift;
1950        my $tz = shift || "-0000";
1951
1952        my %date;
1953        my @months = ("Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec");
1954        my @days = ("Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat");
1955        my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($epoch);
1956        $date{'hour'} = $hour;
1957        $date{'minute'} = $min;
1958        $date{'mday'} = $mday;
1959        $date{'day'} = $days[$wday];
1960        $date{'month'} = $months[$mon];
1961        $date{'rfc2822'}   = sprintf "%s, %d %s %4d %02d:%02d:%02d +0000",
1962                             $days[$wday], $mday, $months[$mon], 1900+$year, $hour ,$min, $sec;
1963        $date{'mday-time'} = sprintf "%d %s %02d:%02d",
1964                             $mday, $months[$mon], $hour ,$min;
1965        $date{'iso-8601'}  = sprintf "%04d-%02d-%02dT%02d:%02d:%02dZ",
1966                             1900+$year, 1+$mon, $mday, $hour ,$min, $sec;
1967
1968        $tz =~ m/^([+\-][0-9][0-9])([0-9][0-9])$/;
1969        my $local = $epoch + ((int $1 + ($2/60)) * 3600);
1970        ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($local);
1971        $date{'hour_local'} = $hour;
1972        $date{'minute_local'} = $min;
1973        $date{'tz_local'} = $tz;
1974        $date{'iso-tz'} = sprintf("%04d-%02d-%02d %02d:%02d:%02d %s",
1975                                  1900+$year, $mon+1, $mday,
1976                                  $hour, $min, $sec, $tz);
1977        return %date;
1978}
1979
1980sub parse_tag {
1981        my $tag_id = shift;
1982        my %tag;
1983        my @comment;
1984
1985        open my $fd, "-|", git_cmd(), "cat-file", "tag", $tag_id or return;
1986        $tag{'id'} = $tag_id;
1987        while (my $line = <$fd>) {
1988                chomp $line;
1989                if ($line =~ m/^object ([0-9a-fA-F]{40})$/) {
1990                        $tag{'object'} = $1;
1991                } elsif ($line =~ m/^type (.+)$/) {
1992                        $tag{'type'} = $1;
1993                } elsif ($line =~ m/^tag (.+)$/) {
1994                        $tag{'name'} = $1;
1995                } elsif ($line =~ m/^tagger (.*) ([0-9]+) (.*)$/) {
1996                        $tag{'author'} = $1;
1997                        $tag{'epoch'} = $2;
1998                        $tag{'tz'} = $3;
1999                } elsif ($line =~ m/--BEGIN/) {
2000                        push @comment, $line;
2001                        last;
2002                } elsif ($line eq "") {
2003                        last;
2004                }
2005        }
2006        push @comment, <$fd>;
2007        $tag{'comment'} = \@comment;
2008        close $fd or return;
2009        if (!defined $tag{'name'}) {
2010                return
2011        };
2012        return %tag
2013}
2014
2015sub parse_commit_text {
2016        my ($commit_text, $withparents) = @_;
2017        my @commit_lines = split '\n', $commit_text;
2018        my %co;
2019
2020        pop @commit_lines; # Remove '\0'
2021
2022        if (! @commit_lines) {
2023                return;
2024        }
2025
2026        my $header = shift @commit_lines;
2027        if ($header !~ m/^[0-9a-fA-F]{40}/) {
2028                return;
2029        }
2030        ($co{'id'}, my @parents) = split ' ', $header;
2031        while (my $line = shift @commit_lines) {
2032                last if $line eq "\n";
2033                if ($line =~ m/^tree ([0-9a-fA-F]{40})$/) {
2034                        $co{'tree'} = $1;
2035                } elsif ((!defined $withparents) && ($line =~ m/^parent ([0-9a-fA-F]{40})$/)) {
2036                        push @parents, $1;
2037                } elsif ($line =~ m/^author (.*) ([0-9]+) (.*)$/) {
2038                        $co{'author'} = $1;
2039                        $co{'author_epoch'} = $2;
2040                        $co{'author_tz'} = $3;
2041                        if ($co{'author'} =~ m/^([^<]+) <([^>]*)>/) {
2042                                $co{'author_name'}  = $1;
2043                                $co{'author_email'} = $2;
2044                        } else {
2045                                $co{'author_name'} = $co{'author'};
2046                        }
2047                } elsif ($line =~ m/^committer (.*) ([0-9]+) (.*)$/) {
2048                        $co{'committer'} = $1;
2049                        $co{'committer_epoch'} = $2;
2050                        $co{'committer_tz'} = $3;
2051                        $co{'committer_name'} = $co{'committer'};
2052                        if ($co{'committer'} =~ m/^([^<]+) <([^>]*)>/) {
2053                                $co{'committer_name'}  = $1;
2054                                $co{'committer_email'} = $2;
2055                        } else {
2056                                $co{'committer_name'} = $co{'committer'};
2057                        }
2058                }
2059        }
2060        if (!defined $co{'tree'}) {
2061                return;
2062        };
2063        $co{'parents'} = \@parents;
2064        $co{'parent'} = $parents[0];
2065
2066        foreach my $title (@commit_lines) {
2067                $title =~ s/^    //;
2068                if ($title ne "") {
2069                        $co{'title'} = chop_str($title, 80, 5);
2070                        # remove leading stuff of merges to make the interesting part visible
2071                        if (length($title) > 50) {
2072                                $title =~ s/^Automatic //;
2073                                $title =~ s/^merge (of|with) /Merge ... /i;
2074                                if (length($title) > 50) {
2075                                        $title =~ s/(http|rsync):\/\///;
2076                                }
2077                                if (length($title) > 50) {
2078                                        $title =~ s/(master|www|rsync)\.//;
2079                                }
2080                                if (length($title) > 50) {
2081                                        $title =~ s/kernel.org:?//;
2082                                }
2083                                if (length($title) > 50) {
2084                                        $title =~ s/\/pub\/scm//;
2085                                }
2086                        }
2087                        $co{'title_short'} = chop_str($title, 50, 5);
2088                        last;
2089                }
2090        }
2091        if ($co{'title'} eq "") {
2092                $co{'title'} = $co{'title_short'} = '(no commit message)';
2093        }
2094        # remove added spaces
2095        foreach my $line (@commit_lines) {
2096                $line =~ s/^    //;
2097        }
2098        $co{'comment'} = \@commit_lines;
2099
2100        my $age = time - $co{'committer_epoch'};
2101        $co{'age'} = $age;
2102        $co{'age_string'} = age_string($age);
2103        my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($co{'committer_epoch'});
2104        if ($age > 60*60*24*7*2) {
2105                $co{'age_string_date'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
2106                $co{'age_string_age'} = $co{'age_string'};
2107        } else {
2108                $co{'age_string_date'} = $co{'age_string'};
2109                $co{'age_string_age'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
2110        }
2111        return %co;
2112}
2113
2114sub parse_commit {
2115        my ($commit_id) = @_;
2116        my %co;
2117
2118        local $/ = "\0";
2119
2120        open my $fd, "-|", git_cmd(), "rev-list",
2121                "--parents",
2122                "--header",
2123                "--max-count=1",
2124                $commit_id,
2125                "--",
2126                or die_error(undef, "Open git-rev-list failed");
2127        %co = parse_commit_text(<$fd>, 1);
2128        close $fd;
2129
2130        return %co;
2131}
2132
2133sub parse_commits {
2134        my ($commit_id, $maxcount, $skip, $filename, @args) = @_;
2135        my @cos;
2136
2137        $maxcount ||= 1;
2138        $skip ||= 0;
2139
2140        local $/ = "\0";
2141
2142        open my $fd, "-|", git_cmd(), "rev-list",
2143                "--header",
2144                @args,
2145                ("--max-count=" . $maxcount),
2146                ("--skip=" . $skip),
2147                @extra_options,
2148                $commit_id,
2149                "--",
2150                ($filename ? ($filename) : ())
2151                or die_error(undef, "Open git-rev-list failed");
2152        while (my $line = <$fd>) {
2153                my %co = parse_commit_text($line);
2154                push @cos, \%co;
2155        }
2156        close $fd;
2157
2158        return wantarray ? @cos : \@cos;
2159}
2160
2161# parse ref from ref_file, given by ref_id, with given type
2162sub parse_ref {
2163        my $ref_file = shift;
2164        my $ref_id = shift;
2165        my $type = shift || git_get_type($ref_id);
2166        my %ref_item;
2167
2168        $ref_item{'type'} = $type;
2169        $ref_item{'id'} = $ref_id;
2170        $ref_item{'epoch'} = 0;
2171        $ref_item{'age'} = "unknown";
2172        if ($type eq "tag") {
2173                my %tag = parse_tag($ref_id);
2174                $ref_item{'comment'} = $tag{'comment'};
2175                if ($tag{'type'} eq "commit") {
2176                        my %co = parse_commit($tag{'object'});
2177                        $ref_item{'epoch'} = $co{'committer_epoch'};
2178                        $ref_item{'age'} = $co{'age_string'};
2179                } elsif (defined($tag{'epoch'})) {
2180                        my $age = time - $tag{'epoch'};
2181                        $ref_item{'epoch'} = $tag{'epoch'};
2182                        $ref_item{'age'} = age_string($age);
2183                }
2184                $ref_item{'reftype'} = $tag{'type'};
2185                $ref_item{'name'} = $tag{'name'};
2186                $ref_item{'refid'} = $tag{'object'};
2187        } elsif ($type eq "commit"){
2188                my %co = parse_commit($ref_id);
2189                $ref_item{'reftype'} = "commit";
2190                $ref_item{'name'} = $ref_file;
2191                $ref_item{'title'} = $co{'title'};
2192                $ref_item{'refid'} = $ref_id;
2193                $ref_item{'epoch'} = $co{'committer_epoch'};
2194                $ref_item{'age'} = $co{'age_string'};
2195        } else {
2196                $ref_item{'reftype'} = $type;
2197                $ref_item{'name'} = $ref_file;
2198                $ref_item{'refid'} = $ref_id;
2199        }
2200
2201        return %ref_item;
2202}
2203
2204# parse line of git-diff-tree "raw" output
2205sub parse_difftree_raw_line {
2206        my $line = shift;
2207        my %res;
2208
2209        # ':100644 100644 03b218260e99b78c6df0ed378e59ed9205ccc96d 3b93d5e7cc7f7dd4ebed13a5cc1a4ad976fc94d8 M   ls-files.c'
2210        # ':100644 100644 7f9281985086971d3877aca27704f2aaf9c448ce bc190ebc71bbd923f2b728e505408f5e54bd073a M   rev-tree.c'
2211        if ($line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)([0-9]{0,3})\t(.*)$/) {
2212                $res{'from_mode'} = $1;
2213                $res{'to_mode'} = $2;
2214                $res{'from_id'} = $3;
2215                $res{'to_id'} = $4;
2216                $res{'status'} = $5;
2217                $res{'similarity'} = $6;
2218                if ($res{'status'} eq 'R' || $res{'status'} eq 'C') { # renamed or copied
2219                        ($res{'from_file'}, $res{'to_file'}) = map { unquote($_) } split("\t", $7);
2220                } else {
2221                        $res{'from_file'} = $res{'to_file'} = $res{'file'} = unquote($7);
2222                }
2223        }
2224        # '::100755 100755 100755 60e79ca1b01bc8b057abe17ddab484699a7f5fdb 94067cc5f73388f33722d52ae02f44692bc07490 94067cc5f73388f33722d52ae02f44692bc07490 MR git-gui/git-gui.sh'
2225        # combined diff (for merge commit)
2226        elsif ($line =~ s/^(::+)((?:[0-7]{6} )+)((?:[0-9a-fA-F]{40} )+)([a-zA-Z]+)\t(.*)$//) {
2227                $res{'nparents'}  = length($1);
2228                $res{'from_mode'} = [ split(' ', $2) ];
2229                $res{'to_mode'} = pop @{$res{'from_mode'}};
2230                $res{'from_id'} = [ split(' ', $3) ];
2231                $res{'to_id'} = pop @{$res{'from_id'}};
2232                $res{'status'} = [ split('', $4) ];
2233                $res{'to_file'} = unquote($5);
2234        }
2235        # 'c512b523472485aef4fff9e57b229d9d243c967f'
2236        elsif ($line =~ m/^([0-9a-fA-F]{40})$/) {
2237                $res{'commit'} = $1;
2238        }
2239
2240        return wantarray ? %res : \%res;
2241}
2242
2243# wrapper: return parsed line of git-diff-tree "raw" output
2244# (the argument might be raw line, or parsed info)
2245sub parsed_difftree_line {
2246        my $line_or_ref = shift;
2247
2248        if (ref($line_or_ref) eq "HASH") {
2249                # pre-parsed (or generated by hand)
2250                return $line_or_ref;
2251        } else {
2252                return parse_difftree_raw_line($line_or_ref);
2253        }
2254}
2255
2256# parse line of git-ls-tree output
2257sub parse_ls_tree_line ($;%) {
2258        my $line = shift;
2259        my %opts = @_;
2260        my %res;
2261
2262        #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
2263        $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t(.+)$/s;
2264
2265        $res{'mode'} = $1;
2266        $res{'type'} = $2;
2267        $res{'hash'} = $3;
2268        if ($opts{'-z'}) {
2269                $res{'name'} = $4;
2270        } else {
2271                $res{'name'} = unquote($4);
2272        }
2273
2274        return wantarray ? %res : \%res;
2275}
2276
2277# generates _two_ hashes, references to which are passed as 2 and 3 argument
2278sub parse_from_to_diffinfo {
2279        my ($diffinfo, $from, $to, @parents) = @_;
2280
2281        if ($diffinfo->{'nparents'}) {
2282                # combined diff
2283                $from->{'file'} = [];
2284                $from->{'href'} = [];
2285                fill_from_file_info($diffinfo, @parents)
2286                        unless exists $diffinfo->{'from_file'};
2287                for (my $i = 0; $i < $diffinfo->{'nparents'}; $i++) {
2288                        $from->{'file'}[$i] =
2289                                defined $diffinfo->{'from_file'}[$i] ?
2290                                        $diffinfo->{'from_file'}[$i] :
2291                                        $diffinfo->{'to_file'};
2292                        if ($diffinfo->{'status'}[$i] ne "A") { # not new (added) file
2293                                $from->{'href'}[$i] = href(action=>"blob",
2294                                                           hash_base=>$parents[$i],
2295                                                           hash=>$diffinfo->{'from_id'}[$i],
2296                                                           file_name=>$from->{'file'}[$i]);
2297                        } else {
2298                                $from->{'href'}[$i] = undef;
2299                        }
2300                }
2301        } else {
2302                # ordinary (not combined) diff
2303                $from->{'file'} = $diffinfo->{'from_file'};
2304                if ($diffinfo->{'status'} ne "A") { # not new (added) file
2305                        $from->{'href'} = href(action=>"blob", hash_base=>$hash_parent,
2306                                               hash=>$diffinfo->{'from_id'},
2307                                               file_name=>$from->{'file'});
2308                } else {
2309                        delete $from->{'href'};
2310                }
2311        }
2312
2313        $to->{'file'} = $diffinfo->{'to_file'};
2314        if (!is_deleted($diffinfo)) { # file exists in result
2315                $to->{'href'} = href(action=>"blob", hash_base=>$hash,
2316                                     hash=>$diffinfo->{'to_id'},
2317                                     file_name=>$to->{'file'});
2318        } else {
2319                delete $to->{'href'};
2320        }
2321}
2322
2323## ......................................................................
2324## parse to array of hashes functions
2325
2326sub git_get_heads_list {
2327        my $limit = shift;
2328        my @headslist;
2329
2330        open my $fd, '-|', git_cmd(), 'for-each-ref',
2331                ($limit ? '--count='.($limit+1) : ()), '--sort=-committerdate',
2332                '--format=%(objectname) %(refname) %(subject)%00%(committer)',
2333                'refs/heads'
2334                or return;
2335        while (my $line = <$fd>) {
2336                my %ref_item;
2337
2338                chomp $line;
2339                my ($refinfo, $committerinfo) = split(/\0/, $line);
2340                my ($hash, $name, $title) = split(' ', $refinfo, 3);
2341                my ($committer, $epoch, $tz) =
2342                        ($committerinfo =~ /^(.*) ([0-9]+) (.*)$/);
2343                $ref_item{'fullname'}  = $name;
2344                $name =~ s!^refs/heads/!!;
2345
2346                $ref_item{'name'}  = $name;
2347                $ref_item{'id'}    = $hash;
2348                $ref_item{'title'} = $title || '(no commit message)';
2349                $ref_item{'epoch'} = $epoch;
2350                if ($epoch) {
2351                        $ref_item{'age'} = age_string(time - $ref_item{'epoch'});
2352                } else {
2353                        $ref_item{'age'} = "unknown";
2354                }
2355
2356                push @headslist, \%ref_item;
2357        }
2358        close $fd;
2359
2360        return wantarray ? @headslist : \@headslist;
2361}
2362
2363sub git_get_tags_list {
2364        my $limit = shift;
2365        my @tagslist;
2366
2367        open my $fd, '-|', git_cmd(), 'for-each-ref',
2368                ($limit ? '--count='.($limit+1) : ()), '--sort=-creatordate',
2369                '--format=%(objectname) %(objecttype) %(refname) '.
2370                '%(*objectname) %(*objecttype) %(subject)%00%(creator)',
2371                'refs/tags'
2372                or return;
2373        while (my $line = <$fd>) {
2374                my %ref_item;
2375
2376                chomp $line;
2377                my ($refinfo, $creatorinfo) = split(/\0/, $line);
2378                my ($id, $type, $name, $refid, $reftype, $title) = split(' ', $refinfo, 6);
2379                my ($creator, $epoch, $tz) =
2380                        ($creatorinfo =~ /^(.*) ([0-9]+) (.*)$/);
2381                $ref_item{'fullname'} = $name;
2382                $name =~ s!^refs/tags/!!;
2383
2384                $ref_item{'type'} = $type;
2385                $ref_item{'id'} = $id;
2386                $ref_item{'name'} = $name;
2387                if ($type eq "tag") {
2388                        $ref_item{'subject'} = $title;
2389                        $ref_item{'reftype'} = $reftype;
2390                        $ref_item{'refid'}   = $refid;
2391                } else {
2392                        $ref_item{'reftype'} = $type;
2393                        $ref_item{'refid'}   = $id;
2394                }
2395
2396                if ($type eq "tag" || $type eq "commit") {
2397                        $ref_item{'epoch'} = $epoch;
2398                        if ($epoch) {
2399                                $ref_item{'age'} = age_string(time - $ref_item{'epoch'});
2400                        } else {
2401                                $ref_item{'age'} = "unknown";
2402                        }
2403                }
2404
2405                push @tagslist, \%ref_item;
2406        }
2407        close $fd;
2408
2409        return wantarray ? @tagslist : \@tagslist;
2410}
2411
2412## ----------------------------------------------------------------------
2413## filesystem-related functions
2414
2415sub get_file_owner {
2416        my $path = shift;
2417
2418        my ($dev, $ino, $mode, $nlink, $st_uid, $st_gid, $rdev, $size) = stat($path);
2419        my ($name, $passwd, $uid, $gid, $quota, $comment, $gcos, $dir, $shell) = getpwuid($st_uid);
2420        if (!defined $gcos) {
2421                return undef;
2422        }
2423        my $owner = $gcos;
2424        $owner =~ s/[,;].*$//;
2425        return to_utf8($owner);
2426}
2427
2428## ......................................................................
2429## mimetype related functions
2430
2431sub mimetype_guess_file {
2432        my $filename = shift;
2433        my $mimemap = shift;
2434        -r $mimemap or return undef;
2435
2436        my %mimemap;
2437        open(MIME, $mimemap) or return undef;
2438        while (<MIME>) {
2439                next if m/^#/; # skip comments
2440                my ($mime, $exts) = split(/\t+/);
2441                if (defined $exts) {
2442                        my @exts = split(/\s+/, $exts);
2443                        foreach my $ext (@exts) {
2444                                $mimemap{$ext} = $mime;
2445                        }
2446                }
2447        }
2448        close(MIME);
2449
2450        $filename =~ /\.([^.]*)$/;
2451        return $mimemap{$1};
2452}
2453
2454sub mimetype_guess {
2455        my $filename = shift;
2456        my $mime;
2457        $filename =~ /\./ or return undef;
2458
2459        if ($mimetypes_file) {
2460                my $file = $mimetypes_file;
2461                if ($file !~ m!^/!) { # if it is relative path
2462                        # it is relative to project
2463                        $file = "$projectroot/$project/$file";
2464                }
2465                $mime = mimetype_guess_file($filename, $file);
2466        }
2467        $mime ||= mimetype_guess_file($filename, '/etc/mime.types');
2468        return $mime;
2469}
2470
2471sub blob_mimetype {
2472        my $fd = shift;
2473        my $filename = shift;
2474
2475        if ($filename) {
2476                my $mime = mimetype_guess($filename);
2477                $mime and return $mime;
2478        }
2479
2480        # just in case
2481        return $default_blob_plain_mimetype unless $fd;
2482
2483        if (-T $fd) {
2484                return 'text/plain' .
2485                       ($default_text_plain_charset ? '; charset='.$default_text_plain_charset : '');
2486        } elsif (! $filename) {
2487                return 'application/octet-stream';
2488        } elsif ($filename =~ m/\.png$/i) {
2489                return 'image/png';
2490        } elsif ($filename =~ m/\.gif$/i) {
2491                return 'image/gif';
2492        } elsif ($filename =~ m/\.jpe?g$/i) {
2493                return 'image/jpeg';
2494        } else {
2495                return 'application/octet-stream';
2496        }
2497}
2498
2499## ======================================================================
2500## functions printing HTML: header, footer, error page
2501
2502sub git_header_html {
2503        my $status = shift || "200 OK";
2504        my $expires = shift;
2505
2506        my $title = "$site_name";
2507        if (defined $project) {
2508                $title .= " - " . to_utf8($project);
2509                if (defined $action) {
2510                        $title .= "/$action";
2511                        if (defined $file_name) {
2512                                $title .= " - " . esc_path($file_name);
2513                                if ($action eq "tree" && $file_name !~ m|/$|) {
2514                                        $title .= "/";
2515                                }
2516                        }
2517                }
2518        }
2519        my $content_type;
2520        # require explicit support from the UA if we are to send the page as
2521        # 'application/xhtml+xml', otherwise send it as plain old 'text/html'.
2522        # we have to do this because MSIE sometimes globs '*/*', pretending to
2523        # support xhtml+xml but choking when it gets what it asked for.
2524        if (defined $cgi->http('HTTP_ACCEPT') &&
2525            $cgi->http('HTTP_ACCEPT') =~ m/(,|;|\s|^)application\/xhtml\+xml(,|;|\s|$)/ &&
2526            $cgi->Accept('application/xhtml+xml') != 0) {
2527                $content_type = 'application/xhtml+xml';
2528        } else {
2529                $content_type = 'text/html';
2530        }
2531        print $cgi->header(-type=>$content_type, -charset => 'utf-8',
2532                           -status=> $status, -expires => $expires);
2533        my $mod_perl_version = $ENV{'MOD_PERL'} ? " $ENV{'MOD_PERL'}" : '';
2534        print <<EOF;
2535<?xml version="1.0" encoding="utf-8"?>
2536<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
2537<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en-US" lang="en-US">
2538<!-- git web interface version $version, (C) 2005-2006, Kay Sievers <kay.sievers\@vrfy.org>, Christian Gierke -->
2539<!-- git core binaries version $git_version -->
2540<head>
2541<meta http-equiv="content-type" content="$content_type; charset=utf-8"/>
2542<meta name="generator" content="gitweb/$version git/$git_version$mod_perl_version"/>
2543<meta name="robots" content="index, nofollow"/>
2544<title>$title</title>
2545EOF
2546# print out each stylesheet that exist
2547        if (defined $stylesheet) {
2548#provides backwards capability for those people who define style sheet in a config file
2549                print '<link rel="stylesheet" type="text/css" href="'.$stylesheet.'"/>'."\n";
2550        } else {
2551                foreach my $stylesheet (@stylesheets) {
2552                        next unless $stylesheet;
2553                        print '<link rel="stylesheet" type="text/css" href="'.$stylesheet.'"/>'."\n";
2554                }
2555        }
2556        if (defined $project) {
2557                my %href_params = get_feed_info();
2558                if (!exists $href_params{'-title'}) {
2559                        $href_params{'-title'} = 'log';
2560                }
2561
2562                foreach my $format qw(RSS Atom) {
2563                        my $type = lc($format);
2564                        my %link_attr = (
2565                                '-rel' => 'alternate',
2566                                '-title' => "$project - $href_params{'-title'} - $format feed",
2567                                '-type' => "application/$type+xml"
2568                        );
2569
2570                        $href_params{'action'} = $type;
2571                        $link_attr{'-href'} = href(%href_params);
2572                        print "<link ".
2573                              "rel=\"$link_attr{'-rel'}\" ".
2574                              "title=\"$link_attr{'-title'}\" ".
2575                              "href=\"$link_attr{'-href'}\" ".
2576                              "type=\"$link_attr{'-type'}\" ".
2577                              "/>\n";
2578
2579                        $href_params{'extra_options'} = '--no-merges';
2580                        $link_attr{'-href'} = href(%href_params);
2581                        $link_attr{'-title'} .= ' (no merges)';
2582                        print "<link ".
2583                              "rel=\"$link_attr{'-rel'}\" ".
2584                              "title=\"$link_attr{'-title'}\" ".
2585                              "href=\"$link_attr{'-href'}\" ".
2586                              "type=\"$link_attr{'-type'}\" ".
2587                              "/>\n";
2588                }
2589
2590        } else {
2591                printf('<link rel="alternate" title="%s projects list" '.
2592                       'href="%s" type="text/plain; charset=utf-8" />'."\n",
2593                       $site_name, href(project=>undef, action=>"project_index"));
2594                printf('<link rel="alternate" title="%s projects feeds" '.
2595                       'href="%s" type="text/x-opml" />'."\n",
2596                       $site_name, href(project=>undef, action=>"opml"));
2597        }
2598        if (defined $favicon) {
2599                print qq(<link rel="shortcut icon" href="$favicon" type="image/png" />\n);
2600        }
2601
2602        print "</head>\n" .
2603              "<body>\n";
2604
2605        if (-f $site_header) {
2606                open (my $fd, $site_header);
2607                print <$fd>;
2608                close $fd;
2609        }
2610
2611        print "<div class=\"page_header\">\n" .
2612              $cgi->a({-href => esc_url($logo_url),
2613                       -title => $logo_label},
2614                      qq(<img src="$logo" width="72" height="27" alt="git" class="logo"/>));
2615        print $cgi->a({-href => esc_url($home_link)}, $home_link_str) . " / ";
2616        if (defined $project) {
2617                print $cgi->a({-href => href(action=>"summary")}, esc_html($project));
2618                if (defined $action) {
2619                        print " / $action";
2620                }
2621                print "\n";
2622        }
2623        print "</div>\n";
2624
2625        my ($have_search) = gitweb_check_feature('search');
2626        if (defined $project && $have_search) {
2627                if (!defined $searchtext) {
2628                        $searchtext = "";
2629                }
2630                my $search_hash;
2631                if (defined $hash_base) {
2632                        $search_hash = $hash_base;
2633                } elsif (defined $hash) {
2634                        $search_hash = $hash;
2635                } else {
2636                        $search_hash = "HEAD";
2637                }
2638                my $action = $my_uri;
2639                my ($use_pathinfo) = gitweb_check_feature('pathinfo');
2640                if ($use_pathinfo) {
2641                        $action .= "/".esc_url($project);
2642                }
2643                print $cgi->startform(-method => "get", -action => $action) .
2644                      "<div class=\"search\">\n" .
2645                      (!$use_pathinfo &&
2646                      $cgi->input({-name=>"p", -value=>$project, -type=>"hidden"}) . "\n") .
2647                      $cgi->input({-name=>"a", -value=>"search", -type=>"hidden"}) . "\n" .
2648                      $cgi->input({-name=>"h", -value=>$search_hash, -type=>"hidden"}) . "\n" .
2649                      $cgi->popup_menu(-name => 'st', -default => 'commit',
2650                                       -values => ['commit', 'grep', 'author', 'committer', 'pickaxe']) .
2651                      $cgi->sup($cgi->a({-href => href(action=>"search_help")}, "?")) .
2652                      " search:\n",
2653                      $cgi->textfield(-name => "s", -value => $searchtext) . "\n" .
2654                      "<span title=\"Extended regular expression\">" .
2655                      $cgi->checkbox(-name => 'sr', -value => 1, -label => 're',
2656                                     -checked => $search_use_regexp) .
2657                      "</span>" .
2658                      "</div>" .
2659                      $cgi->end_form() . "\n";
2660        }
2661}
2662
2663sub git_footer_html {
2664        my $feed_class = 'rss_logo';
2665
2666        print "<div class=\"page_footer\">\n";
2667        if (defined $project) {
2668                my $descr = git_get_project_description($project);
2669                if (defined $descr) {
2670                        print "<div class=\"page_footer_text\">" . esc_html($descr) . "</div>\n";
2671                }
2672
2673                my %href_params = get_feed_info();
2674                if (!%href_params) {
2675                        $feed_class .= ' generic';
2676                }
2677                $href_params{'-title'} ||= 'log';
2678
2679                foreach my $format qw(RSS Atom) {
2680                        $href_params{'action'} = lc($format);
2681                        print $cgi->a({-href => href(%href_params),
2682                                      -title => "$href_params{'-title'} $format feed",
2683                                      -class => $feed_class}, $format)."\n";
2684                }
2685
2686        } else {
2687                print $cgi->a({-href => href(project=>undef, action=>"opml"),
2688                              -class => $feed_class}, "OPML") . " ";
2689                print $cgi->a({-href => href(project=>undef, action=>"project_index"),
2690                              -class => $feed_class}, "TXT") . "\n";
2691        }
2692        print "</div>\n"; # class="page_footer"
2693
2694        if (-f $site_footer) {
2695                open (my $fd, $site_footer);
2696                print <$fd>;
2697                close $fd;
2698        }
2699
2700        print "</body>\n" .
2701              "</html>";
2702}
2703
2704sub die_error {
2705        my $status = shift || "403 Forbidden";
2706        my $error = shift || "Malformed query, file missing or permission denied";
2707
2708        git_header_html($status);
2709        print <<EOF;
2710<div class="page_body">
2711<br /><br />
2712$status - $error
2713<br />
2714</div>
2715EOF
2716        git_footer_html();
2717        exit;
2718}
2719
2720## ----------------------------------------------------------------------
2721## functions printing or outputting HTML: navigation
2722
2723sub git_print_page_nav {
2724        my ($current, $suppress, $head, $treehead, $treebase, $extra) = @_;
2725        $extra = '' if !defined $extra; # pager or formats
2726
2727        my @navs = qw(summary shortlog log commit commitdiff tree);
2728        if ($suppress) {
2729                @navs = grep { $_ ne $suppress } @navs;
2730        }
2731
2732        my %arg = map { $_ => {action=>$_} } @navs;
2733        if (defined $head) {
2734                for (qw(commit commitdiff)) {
2735                        $arg{$_}{'hash'} = $head;
2736                }
2737                if ($current =~ m/^(tree | log | shortlog | commit | commitdiff | search)$/x) {
2738                        for (qw(shortlog log)) {
2739                                $arg{$_}{'hash'} = $head;
2740                        }
2741                }
2742        }
2743        $arg{'tree'}{'hash'} = $treehead if defined $treehead;
2744        $arg{'tree'}{'hash_base'} = $treebase if defined $treebase;
2745
2746        print "<div class=\"page_nav\">\n" .
2747                (join " | ",
2748                 map { $_ eq $current ?
2749                       $_ : $cgi->a({-href => href(%{$arg{$_}})}, "$_")
2750                 } @navs);
2751        print "<br/>\n$extra<br/>\n" .
2752              "</div>\n";
2753}
2754
2755sub format_paging_nav {
2756        my ($action, $hash, $head, $page, $has_next_link) = @_;
2757        my $paging_nav;
2758
2759
2760        if ($hash ne $head || $page) {
2761                $paging_nav .= $cgi->a({-href => href(action=>$action)}, "HEAD");
2762        } else {
2763                $paging_nav .= "HEAD";
2764        }
2765
2766        if ($page > 0) {
2767                $paging_nav .= " &sdot; " .
2768                        $cgi->a({-href => href(-replay=>1, page=>$page-1),
2769                                 -accesskey => "p", -title => "Alt-p"}, "prev");
2770        } else {
2771                $paging_nav .= " &sdot; prev";
2772        }
2773
2774        if ($has_next_link) {
2775                $paging_nav .= " &sdot; " .
2776                        $cgi->a({-href => href(-replay=>1, page=>$page+1),
2777                                 -accesskey => "n", -title => "Alt-n"}, "next");
2778        } else {
2779                $paging_nav .= " &sdot; next";
2780        }
2781
2782        return $paging_nav;
2783}
2784
2785## ......................................................................
2786## functions printing or outputting HTML: div
2787
2788sub git_print_header_div {
2789        my ($action, $title, $hash, $hash_base) = @_;
2790        my %args = ();
2791
2792        $args{'action'} = $action;
2793        $args{'hash'} = $hash if $hash;
2794        $args{'hash_base'} = $hash_base if $hash_base;
2795
2796        print "<div class=\"header\">\n" .
2797              $cgi->a({-href => href(%args), -class => "title"},
2798              $title ? $title : $action) .
2799              "\n</div>\n";
2800}
2801
2802#sub git_print_authorship (\%) {
2803sub git_print_authorship {
2804        my $co = shift;
2805
2806        my %ad = parse_date($co->{'author_epoch'}, $co->{'author_tz'});
2807        print "<div class=\"author_date\">" .
2808              esc_html($co->{'author_name'}) .
2809              " [$ad{'rfc2822'}";
2810        if ($ad{'hour_local'} < 6) {
2811                printf(" (<span class=\"atnight\">%02d:%02d</span> %s)",
2812                       $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
2813        } else {
2814                printf(" (%02d:%02d %s)",
2815                       $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
2816        }
2817        print "]</div>\n";
2818}
2819
2820sub git_print_page_path {
2821        my $name = shift;
2822        my $type = shift;
2823        my $hb = shift;
2824
2825
2826        print "<div class=\"page_path\">";
2827        print $cgi->a({-href => href(action=>"tree", hash_base=>$hb),
2828                      -title => 'tree root'}, to_utf8("[$project]"));
2829        print " / ";
2830        if (defined $name) {
2831                my @dirname = split '/', $name;
2832                my $basename = pop @dirname;
2833                my $fullname = '';
2834
2835                foreach my $dir (@dirname) {
2836                        $fullname .= ($fullname ? '/' : '') . $dir;
2837                        print $cgi->a({-href => href(action=>"tree", file_name=>$fullname,
2838                                                     hash_base=>$hb),
2839                                      -title => $fullname}, esc_path($dir));
2840                        print " / ";
2841                }
2842                if (defined $type && $type eq 'blob') {
2843                        print $cgi->a({-href => href(action=>"blob_plain", file_name=>$file_name,
2844                                                     hash_base=>$hb),
2845                                      -title => $name}, esc_path($basename));
2846                } elsif (defined $type && $type eq 'tree') {
2847                        print $cgi->a({-href => href(action=>"tree", file_name=>$file_name,
2848                                                     hash_base=>$hb),
2849                                      -title => $name}, esc_path($basename));
2850                        print " / ";
2851                } else {
2852                        print esc_path($basename);
2853                }
2854        }
2855        print "<br/></div>\n";
2856}
2857
2858# sub git_print_log (\@;%) {
2859sub git_print_log ($;%) {
2860        my $log = shift;
2861        my %opts = @_;
2862
2863        if ($opts{'-remove_title'}) {
2864                # remove title, i.e. first line of log
2865                shift @$log;
2866        }
2867        # remove leading empty lines
2868        while (defined $log->[0] && $log->[0] eq "") {
2869                shift @$log;
2870        }
2871
2872        # print log
2873        my $signoff = 0;
2874        my $empty = 0;
2875        foreach my $line (@$log) {
2876                if ($line =~ m/^ *(signed[ \-]off[ \-]by[ :]|acked[ \-]by[ :]|cc[ :])/i) {
2877                        $signoff = 1;
2878                        $empty = 0;
2879                        if (! $opts{'-remove_signoff'}) {
2880                                print "<span class=\"signoff\">" . esc_html($line) . "</span><br/>\n";
2881                                next;
2882                        } else {
2883                                # remove signoff lines
2884                                next;
2885                        }
2886                } else {
2887                        $signoff = 0;
2888                }
2889
2890                # print only one empty line
2891                # do not print empty line after signoff
2892                if ($line eq "") {
2893                        next if ($empty || $signoff);
2894                        $empty = 1;
2895                } else {
2896                        $empty = 0;
2897                }
2898
2899                print format_log_line_html($line) . "<br/>\n";
2900        }
2901
2902        if ($opts{'-final_empty_line'}) {
2903                # end with single empty line
2904                print "<br/>\n" unless $empty;
2905        }
2906}
2907
2908# return link target (what link points to)
2909sub git_get_link_target {
2910        my $hash = shift;
2911        my $link_target;
2912
2913        # read link
2914        open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
2915                or return;
2916        {
2917                local $/;
2918                $link_target = <$fd>;
2919        }
2920        close $fd
2921                or return;
2922
2923        return $link_target;
2924}
2925
2926# given link target, and the directory (basedir) the link is in,
2927# return target of link relative to top directory (top tree);
2928# return undef if it is not possible (including absolute links).
2929sub normalize_link_target {
2930        my ($link_target, $basedir, $hash_base) = @_;
2931
2932        # we can normalize symlink target only if $hash_base is provided
2933        return unless $hash_base;
2934
2935        # absolute symlinks (beginning with '/') cannot be normalized
2936        return if (substr($link_target, 0, 1) eq '/');
2937
2938        # normalize link target to path from top (root) tree (dir)
2939        my $path;
2940        if ($basedir) {
2941                $path = $basedir . '/' . $link_target;
2942        } else {
2943                # we are in top (root) tree (dir)
2944                $path = $link_target;
2945        }
2946
2947        # remove //, /./, and /../
2948        my @path_parts;
2949        foreach my $part (split('/', $path)) {
2950                # discard '.' and ''
2951                next if (!$part || $part eq '.');
2952                # handle '..'
2953                if ($part eq '..') {
2954                        if (@path_parts) {
2955                                pop @path_parts;
2956                        } else {
2957                                # link leads outside repository (outside top dir)
2958                                return;
2959                        }
2960                } else {
2961                        push @path_parts, $part;
2962                }
2963        }
2964        $path = join('/', @path_parts);
2965
2966        return $path;
2967}
2968
2969# print tree entry (row of git_tree), but without encompassing <tr> element
2970sub git_print_tree_entry {
2971        my ($t, $basedir, $hash_base, $have_blame) = @_;
2972
2973        my %base_key = ();
2974        $base_key{'hash_base'} = $hash_base if defined $hash_base;
2975
2976        # The format of a table row is: mode list link.  Where mode is
2977        # the mode of the entry, list is the name of the entry, an href,
2978        # and link is the action links of the entry.
2979
2980        print "<td class=\"mode\">" . mode_str($t->{'mode'}) . "</td>\n";
2981        if ($t->{'type'} eq "blob") {
2982                print "<td class=\"list\">" .
2983                        $cgi->a({-href => href(action=>"blob", hash=>$t->{'hash'},
2984                                               file_name=>"$basedir$t->{'name'}", %base_key),
2985                                -class => "list"}, esc_path($t->{'name'}));
2986                if (S_ISLNK(oct $t->{'mode'})) {
2987                        my $link_target = git_get_link_target($t->{'hash'});
2988                        if ($link_target) {
2989                                my $norm_target = normalize_link_target($link_target, $basedir, $hash_base);
2990                                if (defined $norm_target) {
2991                                        print " -> " .
2992                                              $cgi->a({-href => href(action=>"object", hash_base=>$hash_base,
2993                                                                     file_name=>$norm_target),
2994                                                       -title => $norm_target}, esc_path($link_target));
2995                                } else {
2996                                        print " -> " . esc_path($link_target);
2997                                }
2998                        }
2999                }
3000                print "</td>\n";
3001                print "<td class=\"link\">";
3002                print $cgi->a({-href => href(action=>"blob", hash=>$t->{'hash'},
3003                                             file_name=>"$basedir$t->{'name'}", %base_key)},
3004                              "blob");
3005                if ($have_blame) {
3006                        print " | " .
3007                              $cgi->a({-href => href(action=>"blame", hash=>$t->{'hash'},
3008                                                     file_name=>"$basedir$t->{'name'}", %base_key)},
3009                                      "blame");
3010                }
3011                if (defined $hash_base) {
3012                        print " | " .
3013                              $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
3014                                                     hash=>$t->{'hash'}, file_name=>"$basedir$t->{'name'}")},
3015                                      "history");
3016                }
3017                print " | " .
3018                        $cgi->a({-href => href(action=>"blob_plain", hash_base=>$hash_base,
3019                                               file_name=>"$basedir$t->{'name'}")},
3020                                "raw");
3021                print "</td>\n";
3022
3023        } elsif ($t->{'type'} eq "tree") {
3024                print "<td class=\"list\">";
3025                print $cgi->a({-href => href(action=>"tree", hash=>$t->{'hash'},
3026                                             file_name=>"$basedir$t->{'name'}", %base_key)},
3027                              esc_path($t->{'name'}));
3028                print "</td>\n";
3029                print "<td class=\"link\">";
3030                print $cgi->a({-href => href(action=>"tree", hash=>$t->{'hash'},
3031                                             file_name=>"$basedir$t->{'name'}", %base_key)},
3032                              "tree");
3033                if (defined $hash_base) {
3034                        print " | " .
3035                              $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
3036                                                     file_name=>"$basedir$t->{'name'}")},
3037                                      "history");
3038                }
3039                print "</td>\n";
3040        } else {
3041                # unknown object: we can only present history for it
3042                # (this includes 'commit' object, i.e. submodule support)
3043                print "<td class=\"list\">" .
3044                      esc_path($t->{'name'}) .
3045                      "</td>\n";
3046                print "<td class=\"link\">";
3047                if (defined $hash_base) {
3048                        print $cgi->a({-href => href(action=>"history",
3049                                                     hash_base=>$hash_base,
3050                                                     file_name=>"$basedir$t->{'name'}")},
3051                                      "history");
3052                }
3053                print "</td>\n";
3054        }
3055}
3056
3057## ......................................................................
3058## functions printing large fragments of HTML
3059
3060# get pre-image filenames for merge (combined) diff
3061sub fill_from_file_info {
3062        my ($diff, @parents) = @_;
3063
3064        $diff->{'from_file'} = [ ];
3065        $diff->{'from_file'}[$diff->{'nparents'} - 1] = undef;
3066        for (my $i = 0; $i < $diff->{'nparents'}; $i++) {
3067                if ($diff->{'status'}[$i] eq 'R' ||
3068                    $diff->{'status'}[$i] eq 'C') {
3069                        $diff->{'from_file'}[$i] =
3070                                git_get_path_by_hash($parents[$i], $diff->{'from_id'}[$i]);
3071                }
3072        }
3073
3074        return $diff;
3075}
3076
3077# is current raw difftree line of file deletion
3078sub is_deleted {
3079        my $diffinfo = shift;
3080
3081        return $diffinfo->{'to_id'} eq ('0' x 40);
3082}
3083
3084# does patch correspond to [previous] difftree raw line
3085# $diffinfo  - hashref of parsed raw diff format
3086# $patchinfo - hashref of parsed patch diff format
3087#              (the same keys as in $diffinfo)
3088sub is_patch_split {
3089        my ($diffinfo, $patchinfo) = @_;
3090
3091        return defined $diffinfo && defined $patchinfo
3092                && $diffinfo->{'to_file'} eq $patchinfo->{'to_file'};
3093}
3094
3095
3096sub git_difftree_body {
3097        my ($difftree, $hash, @parents) = @_;
3098        my ($parent) = $parents[0];
3099        my ($have_blame) = gitweb_check_feature('blame');
3100        print "<div class=\"list_head\">\n";
3101        if ($#{$difftree} > 10) {
3102                print(($#{$difftree} + 1) . " files changed:\n");
3103        }
3104        print "</div>\n";
3105
3106        print "<table class=\"" .
3107              (@parents > 1 ? "combined " : "") .
3108              "diff_tree\">\n";
3109
3110        # header only for combined diff in 'commitdiff' view
3111        my $has_header = @$difftree && @parents > 1 && $action eq 'commitdiff';
3112        if ($has_header) {
3113                # table header
3114                print "<thead><tr>\n" .
3115                       "<th></th><th></th>\n"; # filename, patchN link
3116                for (my $i = 0; $i < @parents; $i++) {
3117                        my $par = $parents[$i];
3118                        print "<th>" .
3119                              $cgi->a({-href => href(action=>"commitdiff",
3120                                                     hash=>$hash, hash_parent=>$par),
3121                                       -title => 'commitdiff to parent number ' .
3122                                                  ($i+1) . ': ' . substr($par,0,7)},
3123                                      $i+1) .
3124                              "&nbsp;</th>\n";
3125                }
3126                print "</tr></thead>\n<tbody>\n";
3127        }
3128
3129        my $alternate = 1;
3130        my $patchno = 0;
3131        foreach my $line (@{$difftree}) {
3132                my $diff = parsed_difftree_line($line);
3133
3134                if ($alternate) {
3135                        print "<tr class=\"dark\">\n";
3136                } else {
3137                        print "<tr class=\"light\">\n";
3138                }
3139                $alternate ^= 1;
3140
3141                if (exists $diff->{'nparents'}) { # combined diff
3142
3143                        fill_from_file_info($diff, @parents)
3144                                unless exists $diff->{'from_file'};
3145
3146                        if (!is_deleted($diff)) {
3147                                # file exists in the result (child) commit
3148                                print "<td>" .
3149                                      $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
3150                                                             file_name=>$diff->{'to_file'},
3151                                                             hash_base=>$hash),
3152                                              -class => "list"}, esc_path($diff->{'to_file'})) .
3153                                      "</td>\n";
3154                        } else {
3155                                print "<td>" .
3156                                      esc_path($diff->{'to_file'}) .
3157                                      "</td>\n";
3158                        }
3159
3160                        if ($action eq 'commitdiff') {
3161                                # link to patch
3162                                $patchno++;
3163                                print "<td class=\"link\">" .
3164                                      $cgi->a({-href => "#patch$patchno"}, "patch") .
3165                                      " | " .
3166                                      "</td>\n";
3167                        }
3168
3169                        my $has_history = 0;
3170                        my $not_deleted = 0;
3171                        for (my $i = 0; $i < $diff->{'nparents'}; $i++) {
3172                                my $hash_parent = $parents[$i];
3173                                my $from_hash = $diff->{'from_id'}[$i];
3174                                my $from_path = $diff->{'from_file'}[$i];
3175                                my $status = $diff->{'status'}[$i];
3176
3177                                $has_history ||= ($status ne 'A');
3178                                $not_deleted ||= ($status ne 'D');
3179
3180                                if ($status eq 'A') {
3181                                        print "<td  class=\"link\" align=\"right\"> | </td>\n";
3182                                } elsif ($status eq 'D') {
3183                                        print "<td class=\"link\">" .
3184                                              $cgi->a({-href => href(action=>"blob",
3185                                                                     hash_base=>$hash,
3186                                                                     hash=>$from_hash,
3187                                                                     file_name=>$from_path)},
3188                                                      "blob" . ($i+1)) .
3189                                              " | </td>\n";
3190                                } else {
3191                                        if ($diff->{'to_id'} eq $from_hash) {
3192                                                print "<td class=\"link nochange\">";
3193                                        } else {
3194                                                print "<td class=\"link\">";
3195                                        }
3196                                        print $cgi->a({-href => href(action=>"blobdiff",
3197                                                                     hash=>$diff->{'to_id'},
3198                                                                     hash_parent=>$from_hash,
3199                                                                     hash_base=>$hash,
3200                                                                     hash_parent_base=>$hash_parent,
3201                                                                     file_name=>$diff->{'to_file'},
3202                                                                     file_parent=>$from_path)},
3203                                                      "diff" . ($i+1)) .
3204                                              " | </td>\n";
3205                                }
3206                        }
3207
3208                        print "<td class=\"link\">";
3209                        if ($not_deleted) {
3210                                print $cgi->a({-href => href(action=>"blob",
3211                                                             hash=>$diff->{'to_id'},
3212                                                             file_name=>$diff->{'to_file'},
3213                                                             hash_base=>$hash)},
3214                                              "blob");
3215                                print " | " if ($has_history);
3216                        }
3217                        if ($has_history) {
3218                                print $cgi->a({-href => href(action=>"history",
3219                                                             file_name=>$diff->{'to_file'},
3220                                                             hash_base=>$hash)},
3221                                              "history");
3222                        }
3223                        print "</td>\n";
3224
3225                        print "</tr>\n";
3226                        next; # instead of 'else' clause, to avoid extra indent
3227                }
3228                # else ordinary diff
3229
3230                my ($to_mode_oct, $to_mode_str, $to_file_type);
3231                my ($from_mode_oct, $from_mode_str, $from_file_type);
3232                if ($diff->{'to_mode'} ne ('0' x 6)) {
3233                        $to_mode_oct = oct $diff->{'to_mode'};
3234                        if (S_ISREG($to_mode_oct)) { # only for regular file
3235                                $to_mode_str = sprintf("%04o", $to_mode_oct & 0777); # permission bits
3236                        }
3237                        $to_file_type = file_type($diff->{'to_mode'});
3238                }
3239                if ($diff->{'from_mode'} ne ('0' x 6)) {
3240                        $from_mode_oct = oct $diff->{'from_mode'};
3241                        if (S_ISREG($to_mode_oct)) { # only for regular file
3242                                $from_mode_str = sprintf("%04o", $from_mode_oct & 0777); # permission bits
3243                        }
3244                        $from_file_type = file_type($diff->{'from_mode'});
3245                }
3246
3247                if ($diff->{'status'} eq "A") { # created
3248                        my $mode_chng = "<span class=\"file_status new\">[new $to_file_type";
3249                        $mode_chng   .= " with mode: $to_mode_str" if $to_mode_str;
3250                        $mode_chng   .= "]</span>";
3251                        print "<td>";
3252                        print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
3253                                                     hash_base=>$hash, file_name=>$diff->{'file'}),
3254                                      -class => "list"}, esc_path($diff->{'file'}));
3255                        print "</td>\n";
3256                        print "<td>$mode_chng</td>\n";
3257                        print "<td class=\"link\">";
3258                        if ($action eq 'commitdiff') {
3259                                # link to patch
3260                                $patchno++;
3261                                print $cgi->a({-href => "#patch$patchno"}, "patch");
3262                                print " | ";
3263                        }
3264                        print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
3265                                                     hash_base=>$hash, file_name=>$diff->{'file'})},
3266                                      "blob");
3267                        print "</td>\n";
3268
3269                } elsif ($diff->{'status'} eq "D") { # deleted
3270                        my $mode_chng = "<span class=\"file_status deleted\">[deleted $from_file_type]</span>";
3271                        print "<td>";
3272                        print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'from_id'},
3273                                                     hash_base=>$parent, file_name=>$diff->{'file'}),
3274                                       -class => "list"}, esc_path($diff->{'file'}));
3275                        print "</td>\n";
3276                        print "<td>$mode_chng</td>\n";
3277                        print "<td class=\"link\">";
3278                        if ($action eq 'commitdiff') {
3279                                # link to patch
3280                                $patchno++;
3281                                print $cgi->a({-href => "#patch$patchno"}, "patch");
3282                                print " | ";
3283                        }
3284                        print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'from_id'},
3285                                                     hash_base=>$parent, file_name=>$diff->{'file'})},
3286                                      "blob") . " | ";
3287                        if ($have_blame) {
3288                                print $cgi->a({-href => href(action=>"blame", hash_base=>$parent,
3289                                                             file_name=>$diff->{'file'})},
3290                                              "blame") . " | ";
3291                        }
3292                        print $cgi->a({-href => href(action=>"history", hash_base=>$parent,
3293                                                     file_name=>$diff->{'file'})},
3294                                      "history");
3295                        print "</td>\n";
3296
3297                } elsif ($diff->{'status'} eq "M" || $diff->{'status'} eq "T") { # modified, or type changed
3298                        my $mode_chnge = "";
3299                        if ($diff->{'from_mode'} != $diff->{'to_mode'}) {
3300                                $mode_chnge = "<span class=\"file_status mode_chnge\">[changed";
3301                                if ($from_file_type ne $to_file_type) {
3302                                        $mode_chnge .= " from $from_file_type to $to_file_type";
3303                                }
3304                                if (($from_mode_oct & 0777) != ($to_mode_oct & 0777)) {
3305                                        if ($from_mode_str && $to_mode_str) {
3306                                                $mode_chnge .= " mode: $from_mode_str->$to_mode_str";
3307                                        } elsif ($to_mode_str) {
3308                                                $mode_chnge .= " mode: $to_mode_str";
3309                                        }
3310                                }
3311                                $mode_chnge .= "]</span>\n";
3312                        }
3313                        print "<td>";
3314                        print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
3315                                                     hash_base=>$hash, file_name=>$diff->{'file'}),
3316                                      -class => "list"}, esc_path($diff->{'file'}));
3317                        print "</td>\n";
3318                        print "<td>$mode_chnge</td>\n";
3319                        print "<td class=\"link\">";
3320                        if ($action eq 'commitdiff') {
3321                                # link to patch
3322                                $patchno++;
3323                                print $cgi->a({-href => "#patch$patchno"}, "patch") .
3324                                      " | ";
3325                        } elsif ($diff->{'to_id'} ne $diff->{'from_id'}) {
3326                                # "commit" view and modified file (not onlu mode changed)
3327                                print $cgi->a({-href => href(action=>"blobdiff",
3328                                                             hash=>$diff->{'to_id'}, hash_parent=>$diff->{'from_id'},
3329                                                             hash_base=>$hash, hash_parent_base=>$parent,
3330                                                             file_name=>$diff->{'file'})},
3331                                              "diff") .
3332                                      " | ";
3333                        }
3334                        print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
3335                                                     hash_base=>$hash, file_name=>$diff->{'file'})},
3336                                       "blob") . " | ";
3337                        if ($have_blame) {
3338                                print $cgi->a({-href => href(action=>"blame", hash_base=>$hash,
3339                                                             file_name=>$diff->{'file'})},
3340                                              "blame") . " | ";
3341                        }
3342                        print $cgi->a({-href => href(action=>"history", hash_base=>$hash,
3343                                                     file_name=>$diff->{'file'})},
3344                                      "history");
3345                        print "</td>\n";
3346
3347                } elsif ($diff->{'status'} eq "R" || $diff->{'status'} eq "C") { # renamed or copied
3348                        my %status_name = ('R' => 'moved', 'C' => 'copied');
3349                        my $nstatus = $status_name{$diff->{'status'}};
3350                        my $mode_chng = "";
3351                        if ($diff->{'from_mode'} != $diff->{'to_mode'}) {
3352                                # mode also for directories, so we cannot use $to_mode_str
3353                                $mode_chng = sprintf(", mode: %04o", $to_mode_oct & 0777);
3354                        }
3355                        print "<td>" .
3356                              $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
3357                                                     hash=>$diff->{'to_id'}, file_name=>$diff->{'to_file'}),
3358                                      -class => "list"}, esc_path($diff->{'to_file'})) . "</td>\n" .
3359                              "<td><span class=\"file_status $nstatus\">[$nstatus from " .
3360                              $cgi->a({-href => href(action=>"blob", hash_base=>$parent,
3361                                                     hash=>$diff->{'from_id'}, file_name=>$diff->{'from_file'}),
3362                                      -class => "list"}, esc_path($diff->{'from_file'})) .
3363                              " with " . (int $diff->{'similarity'}) . "% similarity$mode_chng]</span></td>\n" .
3364                              "<td class=\"link\">";
3365                        if ($action eq 'commitdiff') {
3366                                # link to patch
3367                                $patchno++;
3368                                print $cgi->a({-href => "#patch$patchno"}, "patch") .
3369                                      " | ";
3370                        } elsif ($diff->{'to_id'} ne $diff->{'from_id'}) {
3371                                # "commit" view and modified file (not only pure rename or copy)
3372                                print $cgi->a({-href => href(action=>"blobdiff",
3373                                                             hash=>$diff->{'to_id'}, hash_parent=>$diff->{'from_id'},
3374                                                             hash_base=>$hash, hash_parent_base=>$parent,
3375                                                             file_name=>$diff->{'to_file'}, file_parent=>$diff->{'from_file'})},
3376                                              "diff") .
3377                                      " | ";
3378                        }
3379                        print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
3380                                                     hash_base=>$parent, file_name=>$diff->{'to_file'})},
3381                                      "blob") . " | ";
3382                        if ($have_blame) {
3383                                print $cgi->a({-href => href(action=>"blame", hash_base=>$hash,
3384                                                             file_name=>$diff->{'to_file'})},
3385                                              "blame") . " | ";
3386                        }
3387                        print $cgi->a({-href => href(action=>"history", hash_base=>$hash,
3388                                                    file_name=>$diff->{'to_file'})},
3389                                      "history");
3390                        print "</td>\n";
3391
3392                } # we should not encounter Unmerged (U) or Unknown (X) status
3393                print "</tr>\n";
3394        }
3395        print "</tbody>" if $has_header;
3396        print "</table>\n";
3397}
3398
3399sub git_patchset_body {
3400        my ($fd, $difftree, $hash, @hash_parents) = @_;
3401        my ($hash_parent) = $hash_parents[0];
3402
3403        my $is_combined = (@hash_parents > 1);
3404        my $patch_idx = 0;
3405        my $patch_number = 0;
3406        my $patch_line;
3407        my $diffinfo;
3408        my $to_name;
3409        my (%from, %to);
3410
3411        print "<div class=\"patchset\">\n";
3412
3413        # skip to first patch
3414        while ($patch_line = <$fd>) {
3415                chomp $patch_line;
3416
3417                last if ($patch_line =~ m/^diff /);
3418        }
3419
3420 PATCH:
3421        while ($patch_line) {
3422
3423                # parse "git diff" header line
3424                if ($patch_line =~ m/^diff --git (\"(?:[^\\\"]*(?:\\.[^\\\"]*)*)\"|[^ "]*) (.*)$/) {
3425                        # $1 is from_name, which we do not use
3426                        $to_name = unquote($2);
3427                        $to_name =~ s!^b/!!;
3428                } elsif ($patch_line =~ m/^diff --(cc|combined) ("?.*"?)$/) {
3429                        # $1 is 'cc' or 'combined', which we do not use
3430                        $to_name = unquote($2);
3431                } else {
3432                        $to_name = undef;
3433                }
3434
3435                # check if current patch belong to current raw line
3436                # and parse raw git-diff line if needed
3437                if (is_patch_split($diffinfo, { 'to_file' => $to_name })) {
3438                        # this is continuation of a split patch
3439                        print "<div class=\"patch cont\">\n";
3440                } else {
3441                        # advance raw git-diff output if needed
3442                        $patch_idx++ if defined $diffinfo;
3443
3444                        # read and prepare patch information
3445                        $diffinfo = parsed_difftree_line($difftree->[$patch_idx]);
3446
3447                        # compact combined diff output can have some patches skipped
3448                        # find which patch (using pathname of result) we are at now;
3449                        if ($is_combined) {
3450                                while ($to_name ne $diffinfo->{'to_file'}) {
3451                                        print "<div class=\"patch\" id=\"patch". ($patch_idx+1) ."\">\n" .
3452                                              format_diff_cc_simplified($diffinfo, @hash_parents) .
3453                                              "</div>\n";  # class="patch"
3454
3455                                        $patch_idx++;
3456                                        $patch_number++;
3457
3458                                        last if $patch_idx > $#$difftree;
3459                                        $diffinfo = parsed_difftree_line($difftree->[$patch_idx]);
3460                                }
3461                        }
3462
3463                        # modifies %from, %to hashes
3464                        parse_from_to_diffinfo($diffinfo, \%from, \%to, @hash_parents);
3465
3466                        # this is first patch for raw difftree line with $patch_idx index
3467                        # we index @$difftree array from 0, but number patches from 1
3468                        print "<div class=\"patch\" id=\"patch". ($patch_idx+1) ."\">\n";
3469                }
3470
3471                # git diff header
3472                #assert($patch_line =~ m/^diff /) if DEBUG;
3473                #assert($patch_line !~ m!$/$!) if DEBUG; # is chomp-ed
3474                $patch_number++;
3475                # print "git diff" header
3476                print format_git_diff_header_line($patch_line, $diffinfo,
3477                                                  \%from, \%to);
3478
3479                # print extended diff header
3480                print "<div class=\"diff extended_header\">\n";
3481        EXTENDED_HEADER:
3482                while ($patch_line = <$fd>) {
3483                        chomp $patch_line;
3484
3485                        last EXTENDED_HEADER if ($patch_line =~ m/^--- |^diff /);
3486
3487                        print format_extended_diff_header_line($patch_line, $diffinfo,
3488                                                               \%from, \%to);
3489                }
3490                print "</div>\n"; # class="diff extended_header"
3491
3492                # from-file/to-file diff header
3493                if (! $patch_line) {
3494                        print "</div>\n"; # class="patch"
3495                        last PATCH;
3496                }
3497                next PATCH if ($patch_line =~ m/^diff /);
3498                #assert($patch_line =~ m/^---/) if DEBUG;
3499
3500                my $last_patch_line = $patch_line;
3501                $patch_line = <$fd>;
3502                chomp $patch_line;
3503                #assert($patch_line =~ m/^\+\+\+/) if DEBUG;
3504
3505                print format_diff_from_to_header($last_patch_line, $patch_line,
3506                                                 $diffinfo, \%from, \%to,
3507                                                 @hash_parents);
3508
3509                # the patch itself
3510        LINE:
3511                while ($patch_line = <$fd>) {
3512                        chomp $patch_line;
3513
3514                        next PATCH if ($patch_line =~ m/^diff /);
3515
3516                        print format_diff_line($patch_line, \%from, \%to);
3517                }
3518
3519        } continue {
3520                print "</div>\n"; # class="patch"
3521        }
3522
3523        # for compact combined (--cc) format, with chunk and patch simpliciaction
3524        # patchset might be empty, but there might be unprocessed raw lines
3525        for (++$patch_idx if $patch_number > 0;
3526             $patch_idx < @$difftree;
3527             ++$patch_idx) {
3528                # read and prepare patch information
3529                $diffinfo = parsed_difftree_line($difftree->[$patch_idx]);
3530
3531                # generate anchor for "patch" links in difftree / whatchanged part
3532                print "<div class=\"patch\" id=\"patch". ($patch_idx+1) ."\">\n" .
3533                      format_diff_cc_simplified($diffinfo, @hash_parents) .
3534                      "</div>\n";  # class="patch"
3535
3536                $patch_number++;
3537        }
3538
3539        if ($patch_number == 0) {
3540                if (@hash_parents > 1) {
3541                        print "<div class=\"diff nodifferences\">Trivial merge</div>\n";
3542                } else {
3543                        print "<div class=\"diff nodifferences\">No differences found</div>\n";
3544                }
3545        }
3546
3547        print "</div>\n"; # class="patchset"
3548}
3549
3550# . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3551
3552sub git_project_list_body {
3553        my ($projlist, $order, $from, $to, $extra, $no_header) = @_;
3554
3555        my ($check_forks) = gitweb_check_feature('forks');
3556
3557        my @projects;
3558        foreach my $pr (@$projlist) {
3559                my (@aa) = git_get_last_activity($pr->{'path'});
3560                unless (@aa) {
3561                        next;
3562                }
3563                ($pr->{'age'}, $pr->{'age_string'}) = @aa;
3564                if (!defined $pr->{'descr'}) {
3565                        my $descr = git_get_project_description($pr->{'path'}) || "";
3566                        $pr->{'descr_long'} = to_utf8($descr);
3567                        $pr->{'descr'} = chop_str($descr, $projects_list_description_width, 5);
3568                }
3569                if (!defined $pr->{'owner'}) {
3570                        $pr->{'owner'} = git_get_project_owner("$pr->{'path'}") || "";
3571                }
3572                if ($check_forks) {
3573                        my $pname = $pr->{'path'};
3574                        if (($pname =~ s/\.git$//) &&
3575                            ($pname !~ /\/$/) &&
3576                            (-d "$projectroot/$pname")) {
3577                                $pr->{'forks'} = "-d $projectroot/$pname";
3578                        }
3579                        else {
3580                                $pr->{'forks'} = 0;
3581                        }
3582                }
3583                push @projects, $pr;
3584        }
3585
3586        $order ||= $default_projects_order;
3587        $from = 0 unless defined $from;
3588        $to = $#projects if (!defined $to || $#projects < $to);
3589
3590        print "<table class=\"project_list\">\n";
3591        unless ($no_header) {
3592                print "<tr>\n";
3593                if ($check_forks) {
3594                        print "<th></th>\n";
3595                }
3596                if ($order eq "project") {
3597                        @projects = sort {$a->{'path'} cmp $b->{'path'}} @projects;
3598                        print "<th>Project</th>\n";
3599                } else {
3600                        print "<th>" .
3601                              $cgi->a({-href => href(project=>undef, order=>'project'),
3602                                       -class => "header"}, "Project") .
3603                              "</th>\n";
3604                }
3605                if ($order eq "descr") {
3606                        @projects = sort {$a->{'descr'} cmp $b->{'descr'}} @projects;
3607                        print "<th>Description</th>\n";
3608                } else {
3609                        print "<th>" .
3610                              $cgi->a({-href => href(project=>undef, order=>'descr'),
3611                                       -class => "header"}, "Description") .
3612                              "</th>\n";
3613                }
3614                if ($order eq "owner") {
3615                        @projects = sort {$a->{'owner'} cmp $b->{'owner'}} @projects;
3616                        print "<th>Owner</th>\n";
3617                } else {
3618                        print "<th>" .
3619                              $cgi->a({-href => href(project=>undef, order=>'owner'),
3620                                       -class => "header"}, "Owner") .
3621                              "</th>\n";
3622                }
3623                if ($order eq "age") {
3624                        @projects = sort {$a->{'age'} <=> $b->{'age'}} @projects;
3625                        print "<th>Last Change</th>\n";
3626                } else {
3627                        print "<th>" .
3628                              $cgi->a({-href => href(project=>undef, order=>'age'),
3629                                       -class => "header"}, "Last Change") .
3630                              "</th>\n";
3631                }
3632                print "<th></th>\n" .
3633                      "</tr>\n";
3634        }
3635        my $alternate = 1;
3636        for (my $i = $from; $i <= $to; $i++) {
3637                my $pr = $projects[$i];
3638                if ($alternate) {
3639                        print "<tr class=\"dark\">\n";
3640                } else {
3641                        print "<tr class=\"light\">\n";
3642                }
3643                $alternate ^= 1;
3644                if ($check_forks) {
3645                        print "<td>";
3646                        if ($pr->{'forks'}) {
3647                                print "<!-- $pr->{'forks'} -->\n";
3648                                print $cgi->a({-href => href(project=>$pr->{'path'}, action=>"forks")}, "+");
3649                        }
3650                        print "</td>\n";
3651                }
3652                print "<td>" . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary"),
3653                                        -class => "list"}, esc_html($pr->{'path'})) . "</td>\n" .
3654                      "<td>" . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary"),
3655                                        -class => "list", -title => $pr->{'descr_long'}},
3656                                        esc_html($pr->{'descr'})) . "</td>\n" .
3657                      "<td><i>" . chop_and_escape_str($pr->{'owner'}, 15) . "</i></td>\n";
3658                print "<td class=\"". age_class($pr->{'age'}) . "\">" .
3659                      (defined $pr->{'age_string'} ? $pr->{'age_string'} : "No commits") . "</td>\n" .
3660                      "<td class=\"link\">" .
3661                      $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary")}, "summary")   . " | " .
3662                      $cgi->a({-href => href(project=>$pr->{'path'}, action=>"shortlog")}, "shortlog") . " | " .
3663                      $cgi->a({-href => href(project=>$pr->{'path'}, action=>"log")}, "log") . " | " .
3664                      $cgi->a({-href => href(project=>$pr->{'path'}, action=>"tree")}, "tree") .
3665                      ($pr->{'forks'} ? " | " . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"forks")}, "forks") : '') .
3666                      "</td>\n" .
3667                      "</tr>\n";
3668        }
3669        if (defined $extra) {
3670                print "<tr>\n";
3671                if ($check_forks) {
3672                        print "<td></td>\n";
3673                }
3674                print "<td colspan=\"5\">$extra</td>\n" .
3675                      "</tr>\n";
3676        }
3677        print "</table>\n";
3678}
3679
3680sub git_shortlog_body {
3681        # uses global variable $project
3682        my ($commitlist, $from, $to, $refs, $extra) = @_;
3683
3684        $from = 0 unless defined $from;
3685        $to = $#{$commitlist} if (!defined $to || $#{$commitlist} < $to);
3686
3687        print "<table class=\"shortlog\">\n";
3688        my $alternate = 1;
3689        for (my $i = $from; $i <= $to; $i++) {
3690                my %co = %{$commitlist->[$i]};
3691                my $commit = $co{'id'};
3692                my $ref = format_ref_marker($refs, $commit);
3693                if ($alternate) {
3694                        print "<tr class=\"dark\">\n";
3695                } else {
3696                        print "<tr class=\"light\">\n";
3697                }
3698                $alternate ^= 1;
3699                my $author = chop_and_escape_str($co{'author_name'}, 10);
3700                # git_summary() used print "<td><i>$co{'age_string'}</i></td>\n" .
3701                print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
3702                      "<td><i>" . $author . "</i></td>\n" .
3703                      "<td>";
3704                print format_subject_html($co{'title'}, $co{'title_short'},
3705                                          href(action=>"commit", hash=>$commit), $ref);
3706                print "</td>\n" .
3707                      "<td class=\"link\">" .
3708                      $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") . " | " .
3709                      $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") . " | " .
3710                      $cgi->a({-href => href(action=>"tree", hash=>$commit, hash_base=>$commit)}, "tree");
3711                my $snapshot_links = format_snapshot_links($commit);
3712                if (defined $snapshot_links) {
3713                        print " | " . $snapshot_links;
3714                }
3715                print "</td>\n" .
3716                      "</tr>\n";
3717        }
3718        if (defined $extra) {
3719                print "<tr>\n" .
3720                      "<td colspan=\"4\">$extra</td>\n" .
3721                      "</tr>\n";
3722        }
3723        print "</table>\n";
3724}
3725
3726sub git_history_body {
3727        # Warning: assumes constant type (blob or tree) during history
3728        my ($commitlist, $from, $to, $refs, $hash_base, $ftype, $extra) = @_;
3729
3730        $from = 0 unless defined $from;
3731        $to = $#{$commitlist} unless (defined $to && $to <= $#{$commitlist});
3732
3733        print "<table class=\"history\">\n";
3734        my $alternate = 1;
3735        for (my $i = $from; $i <= $to; $i++) {
3736                my %co = %{$commitlist->[$i]};
3737                if (!%co) {
3738                        next;
3739                }
3740                my $commit = $co{'id'};
3741
3742                my $ref = format_ref_marker($refs, $commit);
3743
3744                if ($alternate) {
3745                        print "<tr class=\"dark\">\n";
3746                } else {
3747                        print "<tr class=\"light\">\n";
3748                }
3749                $alternate ^= 1;
3750        # shortlog uses      chop_str($co{'author_name'}, 10)
3751                my $author = chop_and_escape_str($co{'author_name'}, 15, 3);
3752                print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
3753                      "<td><i>" . $author . "</i></td>\n" .
3754                      "<td>";
3755                # originally git_history used chop_str($co{'title'}, 50)
3756                print format_subject_html($co{'title'}, $co{'title_short'},
3757                                          href(action=>"commit", hash=>$commit), $ref);
3758                print "</td>\n" .
3759                      "<td class=\"link\">" .
3760                      $cgi->a({-href => href(action=>$ftype, hash_base=>$commit, file_name=>$file_name)}, $ftype) . " | " .
3761                      $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff");
3762
3763                if ($ftype eq 'blob') {
3764                        my $blob_current = git_get_hash_by_path($hash_base, $file_name);
3765                        my $blob_parent  = git_get_hash_by_path($commit, $file_name);
3766                        if (defined $blob_current && defined $blob_parent &&
3767                                        $blob_current ne $blob_parent) {
3768                                print " | " .
3769                                        $cgi->a({-href => href(action=>"blobdiff",
3770                                                               hash=>$blob_current, hash_parent=>$blob_parent,
3771                                                               hash_base=>$hash_base, hash_parent_base=>$commit,
3772                                                               file_name=>$file_name)},
3773                                                "diff to current");
3774                        }
3775                }
3776                print "</td>\n" .
3777                      "</tr>\n";
3778        }
3779        if (defined $extra) {
3780                print "<tr>\n" .
3781                      "<td colspan=\"4\">$extra</td>\n" .
3782                      "</tr>\n";
3783        }
3784        print "</table>\n";
3785}
3786
3787sub git_tags_body {
3788        # uses global variable $project
3789        my ($taglist, $from, $to, $extra) = @_;
3790        $from = 0 unless defined $from;
3791        $to = $#{$taglist} if (!defined $to || $#{$taglist} < $to);
3792
3793        print "<table class=\"tags\">\n";
3794        my $alternate = 1;
3795        for (my $i = $from; $i <= $to; $i++) {
3796                my $entry = $taglist->[$i];
3797                my %tag = %$entry;
3798                my $comment = $tag{'subject'};
3799                my $comment_short;
3800                if (defined $comment) {
3801                        $comment_short = chop_str($comment, 30, 5);
3802                }
3803                if ($alternate) {
3804                        print "<tr class=\"dark\">\n";
3805                } else {
3806                        print "<tr class=\"light\">\n";
3807                }
3808                $alternate ^= 1;
3809                if (defined $tag{'age'}) {
3810                        print "<td><i>$tag{'age'}</i></td>\n";
3811                } else {
3812                        print "<td></td>\n";
3813                }
3814                print "<td>" .
3815                      $cgi->a({-href => href(action=>$tag{'reftype'}, hash=>$tag{'refid'}),
3816                               -class => "list name"}, esc_html($tag{'name'})) .
3817                      "</td>\n" .
3818                      "<td>";
3819                if (defined $comment) {
3820                        print format_subject_html($comment, $comment_short,
3821                                                  href(action=>"tag", hash=>$tag{'id'}));
3822                }
3823                print "</td>\n" .
3824                      "<td class=\"selflink\">";
3825                if ($tag{'type'} eq "tag") {
3826                        print $cgi->a({-href => href(action=>"tag", hash=>$tag{'id'})}, "tag");
3827                } else {
3828                        print "&nbsp;";
3829                }
3830                print "</td>\n" .
3831                      "<td class=\"link\">" . " | " .
3832                      $cgi->a({-href => href(action=>$tag{'reftype'}, hash=>$tag{'refid'})}, $tag{'reftype'});
3833                if ($tag{'reftype'} eq "commit") {
3834                        print " | " . $cgi->a({-href => href(action=>"shortlog", hash=>$tag{'fullname'})}, "shortlog") .
3835                              " | " . $cgi->a({-href => href(action=>"log", hash=>$tag{'fullname'})}, "log");
3836                } elsif ($tag{'reftype'} eq "blob") {
3837                        print " | " . $cgi->a({-href => href(action=>"blob_plain", hash=>$tag{'refid'})}, "raw");
3838                }
3839                print "</td>\n" .
3840                      "</tr>";
3841        }
3842        if (defined $extra) {
3843                print "<tr>\n" .
3844                      "<td colspan=\"5\">$extra</td>\n" .
3845                      "</tr>\n";
3846        }
3847        print "</table>\n";
3848}
3849
3850sub git_heads_body {
3851        # uses global variable $project
3852        my ($headlist, $head, $from, $to, $extra) = @_;
3853        $from = 0 unless defined $from;
3854        $to = $#{$headlist} if (!defined $to || $#{$headlist} < $to);
3855
3856        print "<table class=\"heads\">\n";
3857        my $alternate = 1;
3858        for (my $i = $from; $i <= $to; $i++) {
3859                my $entry = $headlist->[$i];
3860                my %ref = %$entry;
3861                my $curr = $ref{'id'} eq $head;
3862                if ($alternate) {
3863                        print "<tr class=\"dark\">\n";
3864                } else {
3865                        print "<tr class=\"light\">\n";
3866                }
3867                $alternate ^= 1;
3868                print "<td><i>$ref{'age'}</i></td>\n" .
3869                      ($curr ? "<td class=\"current_head\">" : "<td>") .
3870                      $cgi->a({-href => href(action=>"shortlog", hash=>$ref{'fullname'}),
3871                               -class => "list name"},esc_html($ref{'name'})) .
3872                      "</td>\n" .
3873                      "<td class=\"link\">" .
3874                      $cgi->a({-href => href(action=>"shortlog", hash=>$ref{'fullname'})}, "shortlog") . " | " .
3875                      $cgi->a({-href => href(action=>"log", hash=>$ref{'fullname'})}, "log") . " | " .
3876                      $cgi->a({-href => href(action=>"tree", hash=>$ref{'fullname'}, hash_base=>$ref{'name'})}, "tree") .
3877                      "</td>\n" .
3878                      "</tr>";
3879        }
3880        if (defined $extra) {
3881                print "<tr>\n" .
3882                      "<td colspan=\"3\">$extra</td>\n" .
3883                      "</tr>\n";
3884        }
3885        print "</table>\n";
3886}
3887
3888sub git_search_grep_body {
3889        my ($commitlist, $from, $to, $extra) = @_;
3890        $from = 0 unless defined $from;
3891        $to = $#{$commitlist} if (!defined $to || $#{$commitlist} < $to);
3892
3893        print "<table class=\"commit_search\">\n";
3894        my $alternate = 1;
3895        for (my $i = $from; $i <= $to; $i++) {
3896                my %co = %{$commitlist->[$i]};
3897                if (!%co) {
3898                        next;
3899                }
3900                my $commit = $co{'id'};
3901                if ($alternate) {
3902                        print "<tr class=\"dark\">\n";
3903                } else {
3904                        print "<tr class=\"light\">\n";
3905                }
3906                $alternate ^= 1;
3907                my $author = chop_and_escape_str($co{'author_name'}, 15, 5);
3908                print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
3909                      "<td><i>" . $author . "</i></td>\n" .
3910                      "<td>" .
3911                      $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}),
3912                               -class => "list subject"},
3913                              chop_and_escape_str($co{'title'}, 50) . "<br/>");
3914                my $comment = $co{'comment'};
3915                foreach my $line (@$comment) {
3916                        if ($line =~ m/^(.*?)($search_regexp)(.*)$/i) {
3917                                my ($lead, $match, $trail) = ($1, $2, $3);
3918                                $match = chop_str($match, 70, 5, 'center');
3919                                my $contextlen = int((80 - length($match))/2);
3920                                $contextlen = 30 if ($contextlen > 30);
3921                                $lead  = chop_str($lead,  $contextlen, 10, 'left');
3922                                $trail = chop_str($trail, $contextlen, 10, 'right');
3923
3924                                $lead  = esc_html($lead);
3925                                $match = esc_html($match);
3926                                $trail = esc_html($trail);
3927
3928                                print "$lead<span class=\"match\">$match</span>$trail<br />";
3929                        }
3930                }
3931                print "</td>\n" .
3932                      "<td class=\"link\">" .
3933                      $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})}, "commit") .
3934                      " | " .
3935                      $cgi->a({-href => href(action=>"commitdiff", hash=>$co{'id'})}, "commitdiff") .
3936                      " | " .
3937                      $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$co{'id'})}, "tree");
3938                print "</td>\n" .
3939                      "</tr>\n";
3940        }
3941        if (defined $extra) {
3942                print "<tr>\n" .
3943                      "<td colspan=\"3\">$extra</td>\n" .
3944                      "</tr>\n";
3945        }
3946        print "</table>\n";
3947}
3948
3949## ======================================================================
3950## ======================================================================
3951## actions
3952
3953sub git_project_list {
3954        my $order = $cgi->param('o');
3955        if (defined $order && $order !~ m/none|project|descr|owner|age/) {
3956                die_error(undef, "Unknown order parameter");
3957        }
3958
3959        my @list = git_get_projects_list();
3960        if (!@list) {
3961                die_error(undef, "No projects found");
3962        }
3963
3964        git_header_html();
3965        if (-f $home_text) {
3966                print "<div class=\"index_include\">\n";
3967                open (my $fd, $home_text);
3968                print <$fd>;
3969                close $fd;
3970                print "</div>\n";
3971        }
3972        git_project_list_body(\@list, $order);
3973        git_footer_html();
3974}
3975
3976sub git_forks {
3977        my $order = $cgi->param('o');
3978        if (defined $order && $order !~ m/none|project|descr|owner|age/) {
3979                die_error(undef, "Unknown order parameter");
3980        }
3981
3982        my @list = git_get_projects_list($project);
3983        if (!@list) {
3984                die_error(undef, "No forks found");
3985        }
3986
3987        git_header_html();
3988        git_print_page_nav('','');
3989        git_print_header_div('summary', "$project forks");
3990        git_project_list_body(\@list, $order);
3991        git_footer_html();
3992}
3993
3994sub git_project_index {
3995        my @projects = git_get_projects_list($project);
3996
3997        print $cgi->header(
3998                -type => 'text/plain',
3999                -charset => 'utf-8',
4000                -content_disposition => 'inline; filename="index.aux"');
4001
4002        foreach my $pr (@projects) {
4003                if (!exists $pr->{'owner'}) {
4004                        $pr->{'owner'} = git_get_project_owner("$pr->{'path'}");
4005                }
4006
4007                my ($path, $owner) = ($pr->{'path'}, $pr->{'owner'});
4008                # quote as in CGI::Util::encode, but keep the slash, and use '+' for ' '
4009                $path  =~ s/([^a-zA-Z0-9_.\-\/ ])/sprintf("%%%02X", ord($1))/eg;
4010                $owner =~ s/([^a-zA-Z0-9_.\-\/ ])/sprintf("%%%02X", ord($1))/eg;
4011                $path  =~ s/ /\+/g;
4012                $owner =~ s/ /\+/g;
4013
4014                print "$path $owner\n";
4015        }
4016}
4017
4018sub git_summary {
4019        my $descr = git_get_project_description($project) || "none";
4020        my %co = parse_commit("HEAD");
4021        my %cd = %co ? parse_date($co{'committer_epoch'}, $co{'committer_tz'}) : ();
4022        my $head = $co{'id'};
4023
4024        my $owner = git_get_project_owner($project);
4025
4026        my $refs = git_get_references();
4027        # These get_*_list functions return one more to allow us to see if
4028        # there are more ...
4029        my @taglist  = git_get_tags_list(16);
4030        my @headlist = git_get_heads_list(16);
4031        my @forklist;
4032        my ($check_forks) = gitweb_check_feature('forks');
4033
4034        if ($check_forks) {
4035                @forklist = git_get_projects_list($project);
4036        }
4037
4038        git_header_html();
4039        git_print_page_nav('summary','', $head);
4040
4041        print "<div class=\"title\">&nbsp;</div>\n";
4042        print "<table class=\"projects_list\">\n" .
4043              "<tr><td>description</td><td>" . esc_html($descr) . "</td></tr>\n" .
4044              "<tr><td>owner</td><td>" . esc_html($owner) . "</td></tr>\n";
4045        if (defined $cd{'rfc2822'}) {
4046                print "<tr><td>last change</td><td>$cd{'rfc2822'}</td></tr>\n";
4047        }
4048
4049        # use per project git URL list in $projectroot/$project/cloneurl
4050        # or make project git URL from git base URL and project name
4051        my $url_tag = "URL";
4052        my @url_list = git_get_project_url_list($project);
4053        @url_list = map { "$_/$project" } @git_base_url_list unless @url_list;
4054        foreach my $git_url (@url_list) {
4055                next unless $git_url;
4056                print "<tr><td>$url_tag</td><td>$git_url</td></tr>\n";
4057                $url_tag = "";
4058        }
4059        print "</table>\n";
4060
4061        if (-s "$projectroot/$project/README.html") {
4062                if (open my $fd, "$projectroot/$project/README.html") {
4063                        print "<div class=\"title\">readme</div>\n" .
4064                              "<div class=\"readme\">\n";
4065                        print $_ while (<$fd>);
4066                        print "\n</div>\n"; # class="readme"
4067                        close $fd;
4068                }
4069        }
4070
4071        # we need to request one more than 16 (0..15) to check if
4072        # those 16 are all
4073        my @commitlist = $head ? parse_commits($head, 17) : ();
4074        if (@commitlist) {
4075                git_print_header_div('shortlog');
4076                git_shortlog_body(\@commitlist, 0, 15, $refs,
4077                                  $#commitlist <=  15 ? undef :
4078                                  $cgi->a({-href => href(action=>"shortlog")}, "..."));
4079        }
4080
4081        if (@taglist) {
4082                git_print_header_div('tags');
4083                git_tags_body(\@taglist, 0, 15,
4084                              $#taglist <=  15 ? undef :
4085                              $cgi->a({-href => href(action=>"tags")}, "..."));
4086        }
4087
4088        if (@headlist) {
4089                git_print_header_div('heads');
4090                git_heads_body(\@headlist, $head, 0, 15,
4091                               $#headlist <= 15 ? undef :
4092                               $cgi->a({-href => href(action=>"heads")}, "..."));
4093        }
4094
4095        if (@forklist) {
4096                git_print_header_div('forks');
4097                git_project_list_body(\@forklist, undef, 0, 15,
4098                                      $#forklist <= 15 ? undef :
4099                                      $cgi->a({-href => href(action=>"forks")}, "..."),
4100                                      'noheader');
4101        }
4102
4103        git_footer_html();
4104}
4105
4106sub git_tag {
4107        my $head = git_get_head_hash($project);
4108        git_header_html();
4109        git_print_page_nav('','', $head,undef,$head);
4110        my %tag = parse_tag($hash);
4111
4112        if (! %tag) {
4113                die_error(undef, "Unknown tag object");
4114        }
4115
4116        git_print_header_div('commit', esc_html($tag{'name'}), $hash);
4117        print "<div class=\"title_text\">\n" .
4118              "<table class=\"object_header\">\n" .
4119              "<tr>\n" .
4120              "<td>object</td>\n" .
4121              "<td>" . $cgi->a({-class => "list", -href => href(action=>$tag{'type'}, hash=>$tag{'object'})},
4122                               $tag{'object'}) . "</td>\n" .
4123              "<td class=\"link\">" . $cgi->a({-href => href(action=>$tag{'type'}, hash=>$tag{'object'})},
4124                                              $tag{'type'}) . "</td>\n" .
4125              "</tr>\n";
4126        if (defined($tag{'author'})) {
4127                my %ad = parse_date($tag{'epoch'}, $tag{'tz'});
4128                print "<tr><td>author</td><td>" . esc_html($tag{'author'}) . "</td></tr>\n";
4129                print "<tr><td></td><td>" . $ad{'rfc2822'} .
4130                        sprintf(" (%02d:%02d %s)", $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'}) .
4131                        "</td></tr>\n";
4132        }
4133        print "</table>\n\n" .
4134              "</div>\n";
4135        print "<div class=\"page_body\">";
4136        my $comment = $tag{'comment'};
4137        foreach my $line (@$comment) {
4138                chomp $line;
4139                print esc_html($line, -nbsp=>1) . "<br/>\n";
4140        }
4141        print "</div>\n";
4142        git_footer_html();
4143}
4144
4145sub git_blame2 {
4146        my $fd;
4147        my $ftype;
4148
4149        my ($have_blame) = gitweb_check_feature('blame');
4150        if (!$have_blame) {
4151                die_error('403 Permission denied', "Permission denied");
4152        }
4153        die_error('404 Not Found', "File name not defined") if (!$file_name);
4154        $hash_base ||= git_get_head_hash($project);
4155        die_error(undef, "Couldn't find base commit") unless ($hash_base);
4156        my %co = parse_commit($hash_base)
4157                or die_error(undef, "Reading commit failed");
4158        if (!defined $hash) {
4159                $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
4160                        or die_error(undef, "Error looking up file");
4161        }
4162        $ftype = git_get_type($hash);
4163        if ($ftype !~ "blob") {
4164                die_error('400 Bad Request', "Object is not a blob");
4165        }
4166        open ($fd, "-|", git_cmd(), "blame", '-p', '--',
4167              $file_name, $hash_base)
4168                or die_error(undef, "Open git-blame failed");
4169        git_header_html();
4170        my $formats_nav =
4171                $cgi->a({-href => href(action=>"blob", -replay=>1)},
4172                        "blob") .
4173                " | " .
4174                $cgi->a({-href => href(action=>"history", -replay=>1)},
4175                        "history") .
4176                " | " .
4177                $cgi->a({-href => href(action=>"blame", file_name=>$file_name)},
4178                        "HEAD");
4179        git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
4180        git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
4181        git_print_page_path($file_name, $ftype, $hash_base);
4182        my @rev_color = (qw(light2 dark2));
4183        my $num_colors = scalar(@rev_color);
4184        my $current_color = 0;
4185        my $last_rev;
4186        print <<HTML;
4187<div class="page_body">
4188<table class="blame">
4189<tr><th>Commit</th><th>Line</th><th>Data</th></tr>
4190HTML
4191        my %metainfo = ();
4192        while (1) {
4193                $_ = <$fd>;
4194                last unless defined $_;
4195                my ($full_rev, $orig_lineno, $lineno, $group_size) =
4196                    /^([0-9a-f]{40}) (\d+) (\d+)(?: (\d+))?$/;
4197                if (!exists $metainfo{$full_rev}) {
4198                        $metainfo{$full_rev} = {};
4199                }
4200                my $meta = $metainfo{$full_rev};
4201                while (<$fd>) {
4202                        last if (s/^\t//);
4203                        if (/^(\S+) (.*)$/) {
4204                                $meta->{$1} = $2;
4205                        }
4206                }
4207                my $data = $_;
4208                chomp $data;
4209                my $rev = substr($full_rev, 0, 8);
4210                my $author = $meta->{'author'};
4211                my %date = parse_date($meta->{'author-time'},
4212                                      $meta->{'author-tz'});
4213                my $date = $date{'iso-tz'};
4214                if ($group_size) {
4215                        $current_color = ++$current_color % $num_colors;
4216                }
4217                print "<tr class=\"$rev_color[$current_color]\">\n";
4218                if ($group_size) {
4219                        print "<td class=\"sha1\"";
4220                        print " title=\"". esc_html($author) . ", $date\"";
4221                        print " rowspan=\"$group_size\"" if ($group_size > 1);
4222                        print ">";
4223                        print $cgi->a({-href => href(action=>"commit",
4224                                                     hash=>$full_rev,
4225                                                     file_name=>$file_name)},
4226                                      esc_html($rev));
4227                        print "</td>\n";
4228                }
4229                open (my $dd, "-|", git_cmd(), "rev-parse", "$full_rev^")
4230                        or die_error(undef, "Open git-rev-parse failed");
4231                my $parent_commit = <$dd>;
4232                close $dd;
4233                chomp($parent_commit);
4234                my $blamed = href(action => 'blame',
4235                                  file_name => $meta->{'filename'},
4236                                  hash_base => $parent_commit);
4237                print "<td class=\"linenr\">";
4238                print $cgi->a({ -href => "$blamed#l$orig_lineno",
4239                                -id => "l$lineno",
4240                                -class => "linenr" },
4241                              esc_html($lineno));
4242                print "</td>";
4243                print "<td class=\"pre\">" . esc_html($data) . "</td>\n";
4244                print "</tr>\n";
4245        }
4246        print "</table>\n";
4247        print "</div>";
4248        close $fd
4249                or print "Reading blob failed\n";
4250        git_footer_html();
4251}
4252
4253sub git_blame {
4254        my $fd;
4255
4256        my ($have_blame) = gitweb_check_feature('blame');
4257        if (!$have_blame) {
4258                die_error('403 Permission denied', "Permission denied");
4259        }
4260        die_error('404 Not Found', "File name not defined") if (!$file_name);
4261        $hash_base ||= git_get_head_hash($project);
4262        die_error(undef, "Couldn't find base commit") unless ($hash_base);
4263        my %co = parse_commit($hash_base)
4264                or die_error(undef, "Reading commit failed");
4265        if (!defined $hash) {
4266                $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
4267                        or die_error(undef, "Error lookup file");
4268        }
4269        open ($fd, "-|", git_cmd(), "annotate", '-l', '-t', '-r', $file_name, $hash_base)
4270                or die_error(undef, "Open git-annotate failed");
4271        git_header_html();
4272        my $formats_nav =
4273                $cgi->a({-href => href(action=>"blob", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
4274                        "blob") .
4275                " | " .
4276                $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
4277                        "history") .
4278                " | " .
4279                $cgi->a({-href => href(action=>"blame", file_name=>$file_name)},
4280                        "HEAD");
4281        git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
4282        git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
4283        git_print_page_path($file_name, 'blob', $hash_base);
4284        print "<div class=\"page_body\">\n";
4285        print <<HTML;
4286<table class="blame">
4287  <tr>
4288    <th>Commit</th>
4289    <th>Age</th>
4290    <th>Author</th>
4291    <th>Line</th>
4292    <th>Data</th>
4293  </tr>
4294HTML
4295        my @line_class = (qw(light dark));
4296        my $line_class_len = scalar (@line_class);
4297        my $line_class_num = $#line_class;
4298        while (my $line = <$fd>) {
4299                my $long_rev;
4300                my $short_rev;
4301                my $author;
4302                my $time;
4303                my $lineno;
4304                my $data;
4305                my $age;
4306                my $age_str;
4307                my $age_class;
4308
4309                chomp $line;
4310                $line_class_num = ($line_class_num + 1) % $line_class_len;
4311
4312                if ($line =~ m/^([0-9a-fA-F]{40})\t\(\s*([^\t]+)\t(\d+) [+-]\d\d\d\d\t(\d+)\)(.*)$/) {
4313                        $long_rev = $1;
4314                        $author   = $2;
4315                        $time     = $3;
4316                        $lineno   = $4;
4317                        $data     = $5;
4318                } else {
4319                        print qq(  <tr><td colspan="5" class="error">Unable to parse: $line</td></tr>\n);
4320                        next;
4321                }
4322                $short_rev  = substr ($long_rev, 0, 8);
4323                $age        = time () - $time;
4324                $age_str    = age_string ($age);
4325                $age_str    =~ s/ /&nbsp;/g;
4326                $age_class  = age_class($age);
4327                $author     = esc_html ($author);
4328                $author     =~ s/ /&nbsp;/g;
4329
4330                $data = untabify($data);
4331                $data = esc_html ($data);
4332
4333                print <<HTML;
4334  <tr class="$line_class[$line_class_num]">
4335    <td class="sha1"><a href="${\href (action=>"commit", hash=>$long_rev)}" class="text">$short_rev..</a></td>
4336    <td class="$age_class">$age_str</td>
4337    <td>$author</td>
4338    <td class="linenr"><a id="$lineno" href="#$lineno" class="linenr">$lineno</a></td>
4339    <td class="pre">$data</td>
4340  </tr>
4341HTML
4342        } # while (my $line = <$fd>)
4343        print "</table>\n\n";
4344        close $fd
4345                or print "Reading blob failed.\n";
4346        print "</div>";
4347        git_footer_html();
4348}
4349
4350sub git_tags {
4351        my $head = git_get_head_hash($project);
4352        git_header_html();
4353        git_print_page_nav('','', $head,undef,$head);
4354        git_print_header_div('summary', $project);
4355
4356        my @tagslist = git_get_tags_list();
4357        if (@tagslist) {
4358                git_tags_body(\@tagslist);
4359        }
4360        git_footer_html();
4361}
4362
4363sub git_heads {
4364        my $head = git_get_head_hash($project);
4365        git_header_html();
4366        git_print_page_nav('','', $head,undef,$head);
4367        git_print_header_div('summary', $project);
4368
4369        my @headslist = git_get_heads_list();
4370        if (@headslist) {
4371                git_heads_body(\@headslist, $head);
4372        }
4373        git_footer_html();
4374}
4375
4376sub git_blob_plain {
4377        my $expires;
4378
4379        if (!defined $hash) {
4380                if (defined $file_name) {
4381                        my $base = $hash_base || git_get_head_hash($project);
4382                        $hash = git_get_hash_by_path($base, $file_name, "blob")
4383                                or die_error(undef, "Error lookup file");
4384                } else {
4385                        die_error(undef, "No file name defined");
4386                }
4387        } elsif ($hash =~ m/^[0-9a-fA-F]{40}$/) {
4388                # blobs defined by non-textual hash id's can be cached
4389                $expires = "+1d";
4390        }
4391
4392        my $type = shift;
4393        open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
4394                or die_error(undef, "Couldn't cat $file_name, $hash");
4395
4396        $type ||= blob_mimetype($fd, $file_name);
4397
4398        # save as filename, even when no $file_name is given
4399        my $save_as = "$hash";
4400        if (defined $file_name) {
4401                $save_as = $file_name;
4402        } elsif ($type =~ m/^text\//) {
4403                $save_as .= '.txt';
4404        }
4405
4406        print $cgi->header(
4407                -type => "$type",
4408                -expires=>$expires,
4409                -content_disposition => 'inline; filename="' . "$save_as" . '"');
4410        undef $/;
4411        binmode STDOUT, ':raw';
4412        print <$fd>;
4413        binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
4414        $/ = "\n";
4415        close $fd;
4416}
4417
4418sub git_blob {
4419        my $expires;
4420
4421        if (!defined $hash) {
4422                if (defined $file_name) {
4423                        my $base = $hash_base || git_get_head_hash($project);
4424                        $hash = git_get_hash_by_path($base, $file_name, "blob")
4425                                or die_error(undef, "Error lookup file");
4426                } else {
4427                        die_error(undef, "No file name defined");
4428                }
4429        } elsif ($hash =~ m/^[0-9a-fA-F]{40}$/) {
4430                # blobs defined by non-textual hash id's can be cached
4431                $expires = "+1d";
4432        }
4433
4434        my ($have_blame) = gitweb_check_feature('blame');
4435        open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
4436                or die_error(undef, "Couldn't cat $file_name, $hash");
4437        my $mimetype = blob_mimetype($fd, $file_name);
4438        if ($mimetype !~ m!^(?:text/|image/(?:gif|png|jpeg)$)! && -B $fd) {
4439                close $fd;
4440                return git_blob_plain($mimetype);
4441        }
4442        # we can have blame only for text/* mimetype
4443        $have_blame &&= ($mimetype =~ m!^text/!);
4444
4445        git_header_html(undef, $expires);
4446        my $formats_nav = '';
4447        if (defined $hash_base && (my %co = parse_commit($hash_base))) {
4448                if (defined $file_name) {
4449                        if ($have_blame) {
4450                                $formats_nav .=
4451                                        $cgi->a({-href => href(action=>"blame", -replay=>1)},
4452                                                "blame") .
4453                                        " | ";
4454                        }
4455                        $formats_nav .=
4456                                $cgi->a({-href => href(action=>"history", -replay=>1)},
4457                                        "history") .
4458                                " | " .
4459                                $cgi->a({-href => href(action=>"blob_plain", -replay=>1)},
4460                                        "raw") .
4461                                " | " .
4462                                $cgi->a({-href => href(action=>"blob",
4463                                                       hash_base=>"HEAD", file_name=>$file_name)},
4464                                        "HEAD");
4465                } else {
4466                        $formats_nav .=
4467                                $cgi->a({-href => href(action=>"blob_plain", -replay=>1)},
4468                                        "raw");
4469                }
4470                git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
4471                git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
4472        } else {
4473                print "<div class=\"page_nav\">\n" .
4474                      "<br/><br/></div>\n" .
4475                      "<div class=\"title\">$hash</div>\n";
4476        }
4477        git_print_page_path($file_name, "blob", $hash_base);
4478        print "<div class=\"page_body\">\n";
4479        if ($mimetype =~ m!^image/!) {
4480                print qq!<img type="$mimetype"!;
4481                if ($file_name) {
4482                        print qq! alt="$file_name" title="$file_name"!;
4483                }
4484                print qq! src="! .
4485                      href(action=>"blob_plain", hash=>$hash,
4486                           hash_base=>$hash_base, file_name=>$file_name) .
4487                      qq!" />\n!;
4488        } else {
4489                my $nr;
4490                while (my $line = <$fd>) {
4491                        chomp $line;
4492                        $nr++;
4493                        $line = untabify($line);
4494                        printf "<div class=\"pre\"><a id=\"l%i\" href=\"#l%i\" class=\"linenr\">%4i</a> %s</div>\n",
4495                               $nr, $nr, $nr, esc_html($line, -nbsp=>1);
4496                }
4497        }
4498        close $fd
4499                or print "Reading blob failed.\n";
4500        print "</div>";
4501        git_footer_html();
4502}
4503
4504sub git_tree {
4505        if (!defined $hash_base) {
4506                $hash_base = "HEAD";
4507        }
4508        if (!defined $hash) {
4509                if (defined $file_name) {
4510                        $hash = git_get_hash_by_path($hash_base, $file_name, "tree");
4511                } else {
4512                        $hash = $hash_base;
4513                }
4514        }
4515        $/ = "\0";
4516        open my $fd, "-|", git_cmd(), "ls-tree", '-z', $hash
4517                or die_error(undef, "Open git-ls-tree failed");
4518        my @entries = map { chomp; $_ } <$fd>;
4519        close $fd or die_error(undef, "Reading tree failed");
4520        $/ = "\n";
4521
4522        my $refs = git_get_references();
4523        my $ref = format_ref_marker($refs, $hash_base);
4524        git_header_html();
4525        my $basedir = '';
4526        my ($have_blame) = gitweb_check_feature('blame');
4527        if (defined $hash_base && (my %co = parse_commit($hash_base))) {
4528                my @views_nav = ();
4529                if (defined $file_name) {
4530                        push @views_nav,
4531                                $cgi->a({-href => href(action=>"history", -replay=>1)},
4532                                        "history"),
4533                                $cgi->a({-href => href(action=>"tree",
4534                                                       hash_base=>"HEAD", file_name=>$file_name)},
4535                                        "HEAD"),
4536                }
4537                my $snapshot_links = format_snapshot_links($hash);
4538                if (defined $snapshot_links) {
4539                        # FIXME: Should be available when we have no hash base as well.
4540                        push @views_nav, $snapshot_links;
4541                }
4542                git_print_page_nav('tree','', $hash_base, undef, undef, join(' | ', @views_nav));
4543                git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash_base);
4544        } else {
4545                undef $hash_base;
4546                print "<div class=\"page_nav\">\n";
4547                print "<br/><br/></div>\n";
4548                print "<div class=\"title\">$hash</div>\n";
4549        }
4550        if (defined $file_name) {
4551                $basedir = $file_name;
4552                if ($basedir ne '' && substr($basedir, -1) ne '/') {
4553                        $basedir .= '/';
4554                }
4555        }
4556        git_print_page_path($file_name, 'tree', $hash_base);
4557        print "<div class=\"page_body\">\n";
4558        print "<table class=\"tree\">\n";
4559        my $alternate = 1;
4560        # '..' (top directory) link if possible
4561        if (defined $hash_base &&
4562            defined $file_name && $file_name =~ m![^/]+$!) {
4563                if ($alternate) {
4564                        print "<tr class=\"dark\">\n";
4565                } else {
4566                        print "<tr class=\"light\">\n";
4567                }
4568                $alternate ^= 1;
4569
4570                my $up = $file_name;
4571                $up =~ s!/?[^/]+$!!;
4572                undef $up unless $up;
4573                # based on git_print_tree_entry
4574                print '<td class="mode">' . mode_str('040000') . "</td>\n";
4575                print '<td class="list">';
4576                print $cgi->a({-href => href(action=>"tree", hash_base=>$hash_base,
4577                                             file_name=>$up)},
4578                              "..");
4579                print "</td>\n";
4580                print "<td class=\"link\"></td>\n";
4581
4582                print "</tr>\n";
4583        }
4584        foreach my $line (@entries) {
4585                my %t = parse_ls_tree_line($line, -z => 1);
4586
4587                if ($alternate) {
4588                        print "<tr class=\"dark\">\n";
4589                } else {
4590                        print "<tr class=\"light\">\n";
4591                }
4592                $alternate ^= 1;
4593
4594                git_print_tree_entry(\%t, $basedir, $hash_base, $have_blame);
4595
4596                print "</tr>\n";
4597        }
4598        print "</table>\n" .
4599              "</div>";
4600        git_footer_html();
4601}
4602
4603sub git_snapshot {
4604        my @supported_fmts = gitweb_check_feature('snapshot');
4605        @supported_fmts = filter_snapshot_fmts(@supported_fmts);
4606
4607        my $format = $cgi->param('sf');
4608        if (!@supported_fmts) {
4609                die_error('403 Permission denied', "Permission denied");
4610        }
4611        # default to first supported snapshot format
4612        $format ||= $supported_fmts[0];
4613        if ($format !~ m/^[a-z0-9]+$/) {
4614                die_error(undef, "Invalid snapshot format parameter");
4615        } elsif (!exists($known_snapshot_formats{$format})) {
4616                die_error(undef, "Unknown snapshot format");
4617        } elsif (!grep($_ eq $format, @supported_fmts)) {
4618                die_error(undef, "Unsupported snapshot format");
4619        }
4620
4621        if (!defined $hash) {
4622                $hash = git_get_head_hash($project);
4623        }
4624
4625        my $git_command = git_cmd_str();
4626        my $name = $project;
4627        $name =~ s,([^/])/*\.git$,$1,;
4628        $name = basename($name);
4629        my $filename = to_utf8($name);
4630        $name =~ s/\047/\047\\\047\047/g;
4631        my $cmd;
4632        $filename .= "-$hash$known_snapshot_formats{$format}{'suffix'}";
4633        $cmd = "$git_command archive " .
4634                "--format=$known_snapshot_formats{$format}{'format'} " .
4635                "--prefix=\'$name\'/ $hash";
4636        if (exists $known_snapshot_formats{$format}{'compressor'}) {
4637                $cmd .= ' | ' . join ' ', @{$known_snapshot_formats{$format}{'compressor'}};
4638        }
4639
4640        print $cgi->header(
4641                -type => $known_snapshot_formats{$format}{'type'},
4642                -content_disposition => 'inline; filename="' . "$filename" . '"',
4643                -status => '200 OK');
4644
4645        open my $fd, "-|", $cmd
4646                or die_error(undef, "Execute git-archive failed");
4647        binmode STDOUT, ':raw';
4648        print <$fd>;
4649        binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
4650        close $fd;
4651}
4652
4653sub git_log {
4654        my $head = git_get_head_hash($project);
4655        if (!defined $hash) {
4656                $hash = $head;
4657        }
4658        if (!defined $page) {
4659                $page = 0;
4660        }
4661        my $refs = git_get_references();
4662
4663        my @commitlist = parse_commits($hash, 101, (100 * $page));
4664
4665        my $paging_nav = format_paging_nav('log', $hash, $head, $page, $#commitlist >= 100);
4666
4667        git_header_html();
4668        git_print_page_nav('log','', $hash,undef,undef, $paging_nav);
4669
4670        if (!@commitlist) {
4671                my %co = parse_commit($hash);
4672
4673                git_print_header_div('summary', $project);
4674                print "<div class=\"page_body\"> Last change $co{'age_string'}.<br/><br/></div>\n";
4675        }
4676        my $to = ($#commitlist >= 99) ? (99) : ($#commitlist);
4677        for (my $i = 0; $i <= $to; $i++) {
4678                my %co = %{$commitlist[$i]};
4679                next if !%co;
4680                my $commit = $co{'id'};
4681                my $ref = format_ref_marker($refs, $commit);
4682                my %ad = parse_date($co{'author_epoch'});
4683                git_print_header_div('commit',
4684                               "<span class=\"age\">$co{'age_string'}</span>" .
4685                               esc_html($co{'title'}) . $ref,
4686                               $commit);
4687                print "<div class=\"title_text\">\n" .
4688                      "<div class=\"log_link\">\n" .
4689                      $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") .
4690                      " | " .
4691                      $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") .
4692                      " | " .
4693                      $cgi->a({-href => href(action=>"tree", hash=>$commit, hash_base=>$commit)}, "tree") .
4694                      "<br/>\n" .
4695                      "</div>\n" .
4696                      "<i>" . esc_html($co{'author_name'}) .  " [$ad{'rfc2822'}]</i><br/>\n" .
4697                      "</div>\n";
4698
4699                print "<div class=\"log_body\">\n";
4700                git_print_log($co{'comment'}, -final_empty_line=> 1);
4701                print "</div>\n";
4702        }
4703        if ($#commitlist >= 100) {
4704                print "<div class=\"page_nav\">\n";
4705                print $cgi->a({-href => href(-replay=>1, page=>$page+1),
4706                               -accesskey => "n", -title => "Alt-n"}, "next");
4707                print "</div>\n";
4708        }
4709        git_footer_html();
4710}
4711
4712sub git_commit {
4713        $hash ||= $hash_base || "HEAD";
4714        my %co = parse_commit($hash);
4715        if (!%co) {
4716                die_error(undef, "Unknown commit object");
4717        }
4718        my %ad = parse_date($co{'author_epoch'}, $co{'author_tz'});
4719        my %cd = parse_date($co{'committer_epoch'}, $co{'committer_tz'});
4720
4721        my $parent  = $co{'parent'};
4722        my $parents = $co{'parents'}; # listref
4723
4724        # we need to prepare $formats_nav before any parameter munging
4725        my $formats_nav;
4726        if (!defined $parent) {
4727                # --root commitdiff
4728                $formats_nav .= '(initial)';
4729        } elsif (@$parents == 1) {
4730                # single parent commit
4731                $formats_nav .=
4732                        '(parent: ' .
4733                        $cgi->a({-href => href(action=>"commit",
4734                                               hash=>$parent)},
4735                                esc_html(substr($parent, 0, 7))) .
4736                        ')';
4737        } else {
4738                # merge commit
4739                $formats_nav .=
4740                        '(merge: ' .
4741                        join(' ', map {
4742                                $cgi->a({-href => href(action=>"commit",
4743                                                       hash=>$_)},
4744                                        esc_html(substr($_, 0, 7)));
4745                        } @$parents ) .
4746                        ')';
4747        }
4748
4749        if (!defined $parent) {
4750                $parent = "--root";
4751        }
4752        my @difftree;
4753        open my $fd, "-|", git_cmd(), "diff-tree", '-r', "--no-commit-id",
4754                @diff_opts,
4755                (@$parents <= 1 ? $parent : '-c'),
4756                $hash, "--"
4757                or die_error(undef, "Open git-diff-tree failed");
4758        @difftree = map { chomp; $_ } <$fd>;
4759        close $fd or die_error(undef, "Reading git-diff-tree failed");
4760
4761        # non-textual hash id's can be cached
4762        my $expires;
4763        if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
4764                $expires = "+1d";
4765        }
4766        my $refs = git_get_references();
4767        my $ref = format_ref_marker($refs, $co{'id'});
4768
4769        git_header_html(undef, $expires);
4770        git_print_page_nav('commit', '',
4771                           $hash, $co{'tree'}, $hash,
4772                           $formats_nav);
4773
4774        if (defined $co{'parent'}) {
4775                git_print_header_div('commitdiff', esc_html($co{'title'}) . $ref, $hash);
4776        } else {
4777                git_print_header_div('tree', esc_html($co{'title'}) . $ref, $co{'tree'}, $hash);
4778        }
4779        print "<div class=\"title_text\">\n" .
4780              "<table class=\"object_header\">\n";
4781        print "<tr><td>author</td><td>" . esc_html($co{'author'}) . "</td></tr>\n".
4782              "<tr>" .
4783              "<td></td><td> $ad{'rfc2822'}";
4784        if ($ad{'hour_local'} < 6) {
4785                printf(" (<span class=\"atnight\">%02d:%02d</span> %s)",
4786                       $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
4787        } else {
4788                printf(" (%02d:%02d %s)",
4789                       $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
4790        }
4791        print "</td>" .
4792              "</tr>\n";
4793        print "<tr><td>committer</td><td>" . esc_html($co{'committer'}) . "</td></tr>\n";
4794        print "<tr><td></td><td> $cd{'rfc2822'}" .
4795              sprintf(" (%02d:%02d %s)", $cd{'hour_local'}, $cd{'minute_local'}, $cd{'tz_local'}) .
4796              "</td></tr>\n";
4797        print "<tr><td>commit</td><td class=\"sha1\">$co{'id'}</td></tr>\n";
4798        print "<tr>" .
4799              "<td>tree</td>" .
4800              "<td class=\"sha1\">" .
4801              $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash),
4802                       class => "list"}, $co{'tree'}) .
4803              "</td>" .
4804              "<td class=\"link\">" .
4805              $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash)},
4806                      "tree");
4807        my $snapshot_links = format_snapshot_links($hash);
4808        if (defined $snapshot_links) {
4809                print " | " . $snapshot_links;
4810        }
4811        print "</td>" .
4812              "</tr>\n";
4813
4814        foreach my $par (@$parents) {
4815                print "<tr>" .
4816                      "<td>parent</td>" .
4817                      "<td class=\"sha1\">" .
4818                      $cgi->a({-href => href(action=>"commit", hash=>$par),
4819                               class => "list"}, $par) .
4820                      "</td>" .
4821                      "<td class=\"link\">" .
4822                      $cgi->a({-href => href(action=>"commit", hash=>$par)}, "commit") .
4823                      " | " .
4824                      $cgi->a({-href => href(action=>"commitdiff", hash=>$hash, hash_parent=>$par)}, "diff") .
4825                      "</td>" .
4826                      "</tr>\n";
4827        }
4828        print "</table>".
4829              "</div>\n";
4830
4831        print "<div class=\"page_body\">\n";
4832        git_print_log($co{'comment'});
4833        print "</div>\n";
4834
4835        git_difftree_body(\@difftree, $hash, @$parents);
4836
4837        git_footer_html();
4838}
4839
4840sub git_object {
4841        # object is defined by:
4842        # - hash or hash_base alone
4843        # - hash_base and file_name
4844        my $type;
4845
4846        # - hash or hash_base alone
4847        if ($hash || ($hash_base && !defined $file_name)) {
4848                my $object_id = $hash || $hash_base;
4849
4850                my $git_command = git_cmd_str();
4851                open my $fd, "-|", "$git_command cat-file -t $object_id 2>/dev/null"
4852                        or die_error('404 Not Found', "Object does not exist");
4853                $type = <$fd>;
4854                chomp $type;
4855                close $fd
4856                        or die_error('404 Not Found', "Object does not exist");
4857
4858        # - hash_base and file_name
4859        } elsif ($hash_base && defined $file_name) {
4860                $file_name =~ s,/+$,,;
4861
4862                system(git_cmd(), "cat-file", '-e', $hash_base) == 0
4863                        or die_error('404 Not Found', "Base object does not exist");
4864
4865                # here errors should not hapen
4866                open my $fd, "-|", git_cmd(), "ls-tree", $hash_base, "--", $file_name
4867                        or die_error(undef, "Open git-ls-tree failed");
4868                my $line = <$fd>;
4869                close $fd;
4870
4871                #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
4872                unless ($line && $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t/) {
4873                        die_error('404 Not Found', "File or directory for given base does not exist");
4874                }
4875                $type = $2;
4876                $hash = $3;
4877        } else {
4878                die_error('404 Not Found', "Not enough information to find object");
4879        }
4880
4881        print $cgi->redirect(-uri => href(action=>$type, -full=>1,
4882                                          hash=>$hash, hash_base=>$hash_base,
4883                                          file_name=>$file_name),
4884                             -status => '302 Found');
4885}
4886
4887sub git_blobdiff {
4888        my $format = shift || 'html';
4889
4890        my $fd;
4891        my @difftree;
4892        my %diffinfo;
4893        my $expires;
4894
4895        # preparing $fd and %diffinfo for git_patchset_body
4896        # new style URI
4897        if (defined $hash_base && defined $hash_parent_base) {
4898                if (defined $file_name) {
4899                        # read raw output
4900                        open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4901                                $hash_parent_base, $hash_base,
4902                                "--", (defined $file_parent ? $file_parent : ()), $file_name
4903                                or die_error(undef, "Open git-diff-tree failed");
4904                        @difftree = map { chomp; $_ } <$fd>;
4905                        close $fd
4906                                or die_error(undef, "Reading git-diff-tree failed");
4907                        @difftree
4908                                or die_error('404 Not Found', "Blob diff not found");
4909
4910                } elsif (defined $hash &&
4911                         $hash =~ /[0-9a-fA-F]{40}/) {
4912                        # try to find filename from $hash
4913
4914                        # read filtered raw output
4915                        open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4916                                $hash_parent_base, $hash_base, "--"
4917                                or die_error(undef, "Open git-diff-tree failed");
4918                        @difftree =
4919                                # ':100644 100644 03b21826... 3b93d5e7... M     ls-files.c'
4920                                # $hash == to_id
4921                                grep { /^:[0-7]{6} [0-7]{6} [0-9a-fA-F]{40} $hash/ }
4922                                map { chomp; $_ } <$fd>;
4923                        close $fd
4924                                or die_error(undef, "Reading git-diff-tree failed");
4925                        @difftree
4926                                or die_error('404 Not Found', "Blob diff not found");
4927
4928                } else {
4929                        die_error('404 Not Found', "Missing one of the blob diff parameters");
4930                }
4931
4932                if (@difftree > 1) {
4933                        die_error('404 Not Found', "Ambiguous blob diff specification");
4934                }
4935
4936                %diffinfo = parse_difftree_raw_line($difftree[0]);
4937                $file_parent ||= $diffinfo{'from_file'} || $file_name;
4938                $file_name   ||= $diffinfo{'to_file'};
4939
4940                $hash_parent ||= $diffinfo{'from_id'};
4941                $hash        ||= $diffinfo{'to_id'};
4942
4943                # non-textual hash id's can be cached
4944                if ($hash_base =~ m/^[0-9a-fA-F]{40}$/ &&
4945                    $hash_parent_base =~ m/^[0-9a-fA-F]{40}$/) {
4946                        $expires = '+1d';
4947                }
4948
4949                # open patch output
4950                open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4951                        '-p', ($format eq 'html' ? "--full-index" : ()),
4952                        $hash_parent_base, $hash_base,
4953                        "--", (defined $file_parent ? $file_parent : ()), $file_name
4954                        or die_error(undef, "Open git-diff-tree failed");
4955        }
4956
4957        # old/legacy style URI
4958        if (!%diffinfo && # if new style URI failed
4959            defined $hash && defined $hash_parent) {
4960                # fake git-diff-tree raw output
4961                $diffinfo{'from_mode'} = $diffinfo{'to_mode'} = "blob";
4962                $diffinfo{'from_id'} = $hash_parent;
4963                $diffinfo{'to_id'}   = $hash;
4964                if (defined $file_name) {
4965                        if (defined $file_parent) {
4966                                $diffinfo{'status'} = '2';
4967                                $diffinfo{'from_file'} = $file_parent;
4968                                $diffinfo{'to_file'}   = $file_name;
4969                        } else { # assume not renamed
4970                                $diffinfo{'status'} = '1';
4971                                $diffinfo{'from_file'} = $file_name;
4972                                $diffinfo{'to_file'}   = $file_name;
4973                        }
4974                } else { # no filename given
4975                        $diffinfo{'status'} = '2';
4976                        $diffinfo{'from_file'} = $hash_parent;
4977                        $diffinfo{'to_file'}   = $hash;
4978                }
4979
4980                # non-textual hash id's can be cached
4981                if ($hash =~ m/^[0-9a-fA-F]{40}$/ &&
4982                    $hash_parent =~ m/^[0-9a-fA-F]{40}$/) {
4983                        $expires = '+1d';
4984                }
4985
4986                # open patch output
4987                open $fd, "-|", git_cmd(), "diff", @diff_opts,
4988                        '-p', ($format eq 'html' ? "--full-index" : ()),
4989                        $hash_parent, $hash, "--"
4990                        or die_error(undef, "Open git-diff failed");
4991        } else  {
4992                die_error('404 Not Found', "Missing one of the blob diff parameters")
4993                        unless %diffinfo;
4994        }
4995
4996        # header
4997        if ($format eq 'html') {
4998                my $formats_nav =
4999                        $cgi->a({-href => href(action=>"blobdiff_plain", -replay=>1)},
5000                                "raw");
5001                git_header_html(undef, $expires);
5002                if (defined $hash_base && (my %co = parse_commit($hash_base))) {
5003                        git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
5004                        git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
5005                } else {
5006                        print "<div class=\"page_nav\"><br/>$formats_nav<br/></div>\n";
5007                        print "<div class=\"title\">$hash vs $hash_parent</div>\n";
5008                }
5009                if (defined $file_name) {
5010                        git_print_page_path($file_name, "blob", $hash_base);
5011                } else {
5012                        print "<div class=\"page_path\"></div>\n";
5013                }
5014
5015        } elsif ($format eq 'plain') {
5016                print $cgi->header(
5017                        -type => 'text/plain',
5018                        -charset => 'utf-8',
5019                        -expires => $expires,
5020                        -content_disposition => 'inline; filename="' . "$file_name" . '.patch"');
5021
5022                print "X-Git-Url: " . $cgi->self_url() . "\n\n";
5023
5024        } else {
5025                die_error(undef, "Unknown blobdiff format");
5026        }
5027
5028        # patch
5029        if ($format eq 'html') {
5030                print "<div class=\"page_body\">\n";
5031
5032                git_patchset_body($fd, [ \%diffinfo ], $hash_base, $hash_parent_base);
5033                close $fd;
5034
5035                print "</div>\n"; # class="page_body"
5036                git_footer_html();
5037
5038        } else {
5039                while (my $line = <$fd>) {
5040                        $line =~ s!a/($hash|$hash_parent)!'a/'.esc_path($diffinfo{'from_file'})!eg;
5041                        $line =~ s!b/($hash|$hash_parent)!'b/'.esc_path($diffinfo{'to_file'})!eg;
5042
5043                        print $line;
5044
5045                        last if $line =~ m!^\+\+\+!;
5046                }
5047                local $/ = undef;
5048                print <$fd>;
5049                close $fd;
5050        }
5051}
5052
5053sub git_blobdiff_plain {
5054        git_blobdiff('plain');
5055}
5056
5057sub git_commitdiff {
5058        my $format = shift || 'html';
5059        $hash ||= $hash_base || "HEAD";
5060        my %co = parse_commit($hash);
5061        if (!%co) {
5062                die_error(undef, "Unknown commit object");
5063        }
5064
5065        # choose format for commitdiff for merge
5066        if (! defined $hash_parent && @{$co{'parents'}} > 1) {
5067                $hash_parent = '--cc';
5068        }
5069        # we need to prepare $formats_nav before almost any parameter munging
5070        my $formats_nav;
5071        if ($format eq 'html') {
5072                $formats_nav =
5073                        $cgi->a({-href => href(action=>"commitdiff_plain", -replay=>1)},
5074                                "raw");
5075
5076                if (defined $hash_parent &&
5077                    $hash_parent ne '-c' && $hash_parent ne '--cc') {
5078                        # commitdiff with two commits given
5079                        my $hash_parent_short = $hash_parent;
5080                        if ($hash_parent =~ m/^[0-9a-fA-F]{40}$/) {
5081                                $hash_parent_short = substr($hash_parent, 0, 7);
5082                        }
5083                        $formats_nav .=
5084                                ' (from';
5085                        for (my $i = 0; $i < @{$co{'parents'}}; $i++) {
5086                                if ($co{'parents'}[$i] eq $hash_parent) {
5087                                        $formats_nav .= ' parent ' . ($i+1);
5088                                        last;
5089                                }
5090                        }
5091                        $formats_nav .= ': ' .
5092                                $cgi->a({-href => href(action=>"commitdiff",
5093                                                       hash=>$hash_parent)},
5094                                        esc_html($hash_parent_short)) .
5095                                ')';
5096                } elsif (!$co{'parent'}) {
5097                        # --root commitdiff
5098                        $formats_nav .= ' (initial)';
5099                } elsif (scalar @{$co{'parents'}} == 1) {
5100                        # single parent commit
5101                        $formats_nav .=
5102                                ' (parent: ' .
5103                                $cgi->a({-href => href(action=>"commitdiff",
5104                                                       hash=>$co{'parent'})},
5105                                        esc_html(substr($co{'parent'}, 0, 7))) .
5106                                ')';
5107                } else {
5108                        # merge commit
5109                        if ($hash_parent eq '--cc') {
5110                                $formats_nav .= ' | ' .
5111                                        $cgi->a({-href => href(action=>"commitdiff",
5112                                                               hash=>$hash, hash_parent=>'-c')},
5113                                                'combined');
5114                        } else { # $hash_parent eq '-c'
5115                                $formats_nav .= ' | ' .
5116                                        $cgi->a({-href => href(action=>"commitdiff",
5117                                                               hash=>$hash, hash_parent=>'--cc')},
5118                                                'compact');
5119                        }
5120                        $formats_nav .=
5121                                ' (merge: ' .
5122                                join(' ', map {
5123                                        $cgi->a({-href => href(action=>"commitdiff",
5124                                                               hash=>$_)},
5125                                                esc_html(substr($_, 0, 7)));
5126                                } @{$co{'parents'}} ) .
5127                                ')';
5128                }
5129        }
5130
5131        my $hash_parent_param = $hash_parent;
5132        if (!defined $hash_parent_param) {
5133                # --cc for multiple parents, --root for parentless
5134                $hash_parent_param =
5135                        @{$co{'parents'}} > 1 ? '--cc' : $co{'parent'} || '--root';
5136        }
5137
5138        # read commitdiff
5139        my $fd;
5140        my @difftree;
5141        if ($format eq 'html') {
5142                open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
5143                        "--no-commit-id", "--patch-with-raw", "--full-index",
5144                        $hash_parent_param, $hash, "--"
5145                        or die_error(undef, "Open git-diff-tree failed");
5146
5147                while (my $line = <$fd>) {
5148                        chomp $line;
5149                        # empty line ends raw part of diff-tree output
5150                        last unless $line;
5151                        push @difftree, scalar parse_difftree_raw_line($line);
5152                }
5153
5154        } elsif ($format eq 'plain') {
5155                open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
5156                        '-p', $hash_parent_param, $hash, "--"
5157                        or die_error(undef, "Open git-diff-tree failed");
5158
5159        } else {
5160                die_error(undef, "Unknown commitdiff format");
5161        }
5162
5163        # non-textual hash id's can be cached
5164        my $expires;
5165        if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
5166                $expires = "+1d";
5167        }
5168
5169        # write commit message
5170        if ($format eq 'html') {
5171                my $refs = git_get_references();
5172                my $ref = format_ref_marker($refs, $co{'id'});
5173
5174                git_header_html(undef, $expires);
5175                git_print_page_nav('commitdiff','', $hash,$co{'tree'},$hash, $formats_nav);
5176                git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash);
5177                git_print_authorship(\%co);
5178                print "<div class=\"page_body\">\n";
5179                if (@{$co{'comment'}} > 1) {
5180                        print "<div class=\"log\">\n";
5181                        git_print_log($co{'comment'}, -final_empty_line=> 1, -remove_title => 1);
5182                        print "</div>\n"; # class="log"
5183                }
5184
5185        } elsif ($format eq 'plain') {
5186                my $refs = git_get_references("tags");
5187                my $tagname = git_get_rev_name_tags($hash);
5188                my $filename = basename($project) . "-$hash.patch";
5189
5190                print $cgi->header(
5191                        -type => 'text/plain',
5192                        -charset => 'utf-8',
5193                        -expires => $expires,
5194                        -content_disposition => 'inline; filename="' . "$filename" . '"');
5195                my %ad = parse_date($co{'author_epoch'}, $co{'author_tz'});
5196                print "From: " . to_utf8($co{'author'}) . "\n";
5197                print "Date: $ad{'rfc2822'} ($ad{'tz_local'})\n";
5198                print "Subject: " . to_utf8($co{'title'}) . "\n";
5199
5200                print "X-Git-Tag: $tagname\n" if $tagname;
5201                print "X-Git-Url: " . $cgi->self_url() . "\n\n";
5202
5203                foreach my $line (@{$co{'comment'}}) {
5204                        print to_utf8($line) . "\n";
5205                }
5206                print "---\n\n";
5207        }
5208
5209        # write patch
5210        if ($format eq 'html') {
5211                my $use_parents = !defined $hash_parent ||
5212                        $hash_parent eq '-c' || $hash_parent eq '--cc';
5213                git_difftree_body(\@difftree, $hash,
5214                                  $use_parents ? @{$co{'parents'}} : $hash_parent);
5215                print "<br/>\n";
5216
5217                git_patchset_body($fd, \@difftree, $hash,
5218                                  $use_parents ? @{$co{'parents'}} : $hash_parent);
5219                close $fd;
5220                print "</div>\n"; # class="page_body"
5221                git_footer_html();
5222
5223        } elsif ($format eq 'plain') {
5224                local $/ = undef;
5225                print <$fd>;
5226                close $fd
5227                        or print "Reading git-diff-tree failed\n";
5228        }
5229}
5230
5231sub git_commitdiff_plain {
5232        git_commitdiff('plain');
5233}
5234
5235sub git_history {
5236        if (!defined $hash_base) {
5237                $hash_base = git_get_head_hash($project);
5238        }
5239        if (!defined $page) {
5240                $page = 0;
5241        }
5242        my $ftype;
5243        my %co = parse_commit($hash_base);
5244        if (!%co) {
5245                die_error(undef, "Unknown commit object");
5246        }
5247
5248        my $refs = git_get_references();
5249        my $limit = sprintf("--max-count=%i", (100 * ($page+1)));
5250
5251        my @commitlist = parse_commits($hash_base, 101, (100 * $page),
5252                                       $file_name, "--full-history");
5253        if (!@commitlist) {
5254                die_error('404 Not Found', "No such file or directory on given branch");
5255        }
5256
5257        if (!defined $hash && defined $file_name) {
5258                # some commits could have deleted file in question,
5259                # and not have it in tree, but one of them has to have it
5260                for (my $i = 0; $i <= @commitlist; $i++) {
5261                        $hash = git_get_hash_by_path($commitlist[$i]{'id'}, $file_name);
5262                        last if defined $hash;
5263                }
5264        }
5265        if (defined $hash) {
5266                $ftype = git_get_type($hash);
5267        }
5268        if (!defined $ftype) {
5269                die_error(undef, "Unknown type of object");
5270        }
5271
5272        my $paging_nav = '';
5273        if ($page > 0) {
5274                $paging_nav .=
5275                        $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
5276                                               file_name=>$file_name)},
5277                                "first");
5278                $paging_nav .= " &sdot; " .
5279                        $cgi->a({-href => href(-replay=>1, page=>$page-1),
5280                                 -accesskey => "p", -title => "Alt-p"}, "prev");
5281        } else {
5282                $paging_nav .= "first";
5283                $paging_nav .= " &sdot; prev";
5284        }
5285        my $next_link = '';
5286        if ($#commitlist >= 100) {
5287                $next_link =
5288                        $cgi->a({-href => href(-replay=>1, page=>$page+1),
5289                                 -accesskey => "n", -title => "Alt-n"}, "next");
5290                $paging_nav .= " &sdot; $next_link";
5291        } else {
5292                $paging_nav .= " &sdot; next";
5293        }
5294
5295        git_header_html();
5296        git_print_page_nav('history','', $hash_base,$co{'tree'},$hash_base, $paging_nav);
5297        git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
5298        git_print_page_path($file_name, $ftype, $hash_base);
5299
5300        git_history_body(\@commitlist, 0, 99,
5301                         $refs, $hash_base, $ftype, $next_link);
5302
5303        git_footer_html();
5304}
5305
5306sub git_search {
5307        my ($have_search) = gitweb_check_feature('search');
5308        if (!$have_search) {
5309                die_error('403 Permission denied', "Permission denied");
5310        }
5311        if (!defined $searchtext) {
5312                die_error(undef, "Text field empty");
5313        }
5314        if (!defined $hash) {
5315                $hash = git_get_head_hash($project);
5316        }
5317        my %co = parse_commit($hash);
5318        if (!%co) {
5319                die_error(undef, "Unknown commit object");
5320        }
5321        if (!defined $page) {
5322                $page = 0;
5323        }
5324
5325        $searchtype ||= 'commit';
5326        if ($searchtype eq 'pickaxe') {
5327                # pickaxe may take all resources of your box and run for several minutes
5328                # with every query - so decide by yourself how public you make this feature
5329                my ($have_pickaxe) = gitweb_check_feature('pickaxe');
5330                if (!$have_pickaxe) {
5331                        die_error('403 Permission denied', "Permission denied");
5332                }
5333        }
5334        if ($searchtype eq 'grep') {
5335                my ($have_grep) = gitweb_check_feature('grep');
5336                if (!$have_grep) {
5337                        die_error('403 Permission denied', "Permission denied");
5338                }
5339        }
5340
5341        git_header_html();
5342
5343        if ($searchtype eq 'commit' or $searchtype eq 'author' or $searchtype eq 'committer') {
5344                my $greptype;
5345                if ($searchtype eq 'commit') {
5346                        $greptype = "--grep=";
5347                } elsif ($searchtype eq 'author') {
5348                        $greptype = "--author=";
5349                } elsif ($searchtype eq 'committer') {
5350                        $greptype = "--committer=";
5351                }
5352                $greptype .= $searchtext;
5353                my @commitlist = parse_commits($hash, 101, (100 * $page), undef,
5354                                               $greptype, '--regexp-ignore-case',
5355                                               $search_use_regexp ? '--extended-regexp' : '--fixed-strings');
5356
5357                my $paging_nav = '';
5358                if ($page > 0) {
5359                        $paging_nav .=
5360                                $cgi->a({-href => href(action=>"search", hash=>$hash,
5361                                                       searchtext=>$searchtext,
5362                                                       searchtype=>$searchtype)},
5363                                        "first");
5364                        $paging_nav .= " &sdot; " .
5365                                $cgi->a({-href => href(-replay=>1, page=>$page-1),
5366                                         -accesskey => "p", -title => "Alt-p"}, "prev");
5367                } else {
5368                        $paging_nav .= "first";
5369                        $paging_nav .= " &sdot; prev";
5370                }
5371                my $next_link = '';
5372                if ($#commitlist >= 100) {
5373                        $next_link =
5374                                $cgi->a({-href => href(-replay=>1, page=>$page+1),
5375                                         -accesskey => "n", -title => "Alt-n"}, "next");
5376                        $paging_nav .= " &sdot; $next_link";
5377                } else {
5378                        $paging_nav .= " &sdot; next";
5379                }
5380
5381                if ($#commitlist >= 100) {
5382                }
5383
5384                git_print_page_nav('','', $hash,$co{'tree'},$hash, $paging_nav);
5385                git_print_header_div('commit', esc_html($co{'title'}), $hash);
5386                git_search_grep_body(\@commitlist, 0, 99, $next_link);
5387        }
5388
5389        if ($searchtype eq 'pickaxe') {
5390                git_print_page_nav('','', $hash,$co{'tree'},$hash);
5391                git_print_header_div('commit', esc_html($co{'title'}), $hash);
5392
5393                print "<table class=\"pickaxe search\">\n";
5394                my $alternate = 1;
5395                $/ = "\n";
5396                open my $fd, '-|', git_cmd(), '--no-pager', 'log', @diff_opts,
5397                        '--pretty=format:%H', '--no-abbrev', '--raw', "-S$searchtext",
5398                        ($search_use_regexp ? '--pickaxe-regex' : ());
5399                undef %co;
5400                my @files;
5401                while (my $line = <$fd>) {
5402                        chomp $line;
5403                        next unless $line;
5404
5405                        my %set = parse_difftree_raw_line($line);
5406                        if (defined $set{'commit'}) {
5407                                # finish previous commit
5408                                if (%co) {
5409                                        print "</td>\n" .
5410                                              "<td class=\"link\">" .
5411                                              $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})}, "commit") .
5412                                              " | " .
5413                                              $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$co{'id'})}, "tree");
5414                                        print "</td>\n" .
5415                                              "</tr>\n";
5416                                }
5417
5418                                if ($alternate) {
5419                                        print "<tr class=\"dark\">\n";
5420                                } else {
5421                                        print "<tr class=\"light\">\n";
5422                                }
5423                                $alternate ^= 1;
5424                                %co = parse_commit($set{'commit'});
5425                                my $author = chop_and_escape_str($co{'author_name'}, 15, 5);
5426                                print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
5427                                      "<td><i>$author</i></td>\n" .
5428                                      "<td>" .
5429                                      $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}),
5430                                              -class => "list subject"},
5431                                              chop_and_escape_str($co{'title'}, 50) . "<br/>");
5432                        } elsif (defined $set{'to_id'}) {
5433                                next if ($set{'to_id'} =~ m/^0{40}$/);
5434
5435                                print $cgi->a({-href => href(action=>"blob", hash_base=>$co{'id'},
5436                                                             hash=>$set{'to_id'}, file_name=>$set{'to_file'}),
5437                                              -class => "list"},
5438                                              "<span class=\"match\">" . esc_path($set{'file'}) . "</span>") .
5439                                      "<br/>\n";
5440                        }
5441                }
5442                close $fd;
5443
5444                # finish last commit (warning: repetition!)
5445                if (%co) {
5446                        print "</td>\n" .
5447                              "<td class=\"link\">" .
5448                              $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})}, "commit") .
5449                              " | " .
5450                              $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$co{'id'})}, "tree");
5451                        print "</td>\n" .
5452                              "</tr>\n";
5453                }
5454
5455                print "</table>\n";
5456        }
5457
5458        if ($searchtype eq 'grep') {
5459                git_print_page_nav('','', $hash,$co{'tree'},$hash);
5460                git_print_header_div('commit', esc_html($co{'title'}), $hash);
5461
5462                print "<table class=\"grep_search\">\n";
5463                my $alternate = 1;
5464                my $matches = 0;
5465                $/ = "\n";
5466                open my $fd, "-|", git_cmd(), 'grep', '-n',
5467                        $search_use_regexp ? ('-E', '-i') : '-F',
5468                        $searchtext, $co{'tree'};
5469                my $lastfile = '';
5470                while (my $line = <$fd>) {
5471                        chomp $line;
5472                        my ($file, $lno, $ltext, $binary);
5473                        last if ($matches++ > 1000);
5474                        if ($line =~ /^Binary file (.+) matches$/) {
5475                                $file = $1;
5476                                $binary = 1;
5477                        } else {
5478                                (undef, $file, $lno, $ltext) = split(/:/, $line, 4);
5479                        }
5480                        if ($file ne $lastfile) {
5481                                $lastfile and print "</td></tr>\n";
5482                                if ($alternate++) {
5483                                        print "<tr class=\"dark\">\n";
5484                                } else {
5485                                        print "<tr class=\"light\">\n";
5486                                }
5487                                print "<td class=\"list\">".
5488                                        $cgi->a({-href => href(action=>"blob", hash=>$co{'hash'},
5489                                                               file_name=>"$file"),
5490                                                -class => "list"}, esc_path($file));
5491                                print "</td><td>\n";
5492                                $lastfile = $file;
5493                        }
5494                        if ($binary) {
5495                                print "<div class=\"binary\">Binary file</div>\n";
5496                        } else {
5497                                $ltext = untabify($ltext);
5498                                if ($ltext =~ m/^(.*)($search_regexp)(.*)$/i) {
5499                                        $ltext = esc_html($1, -nbsp=>1);
5500                                        $ltext .= '<span class="match">';
5501                                        $ltext .= esc_html($2, -nbsp=>1);
5502                                        $ltext .= '</span>';
5503                                        $ltext .= esc_html($3, -nbsp=>1);
5504                                } else {
5505                                        $ltext = esc_html($ltext, -nbsp=>1);
5506                                }
5507                                print "<div class=\"pre\">" .
5508                                        $cgi->a({-href => href(action=>"blob", hash=>$co{'hash'},
5509                                                               file_name=>"$file").'#l'.$lno,
5510                                                -class => "linenr"}, sprintf('%4i', $lno))
5511                                        . ' ' .  $ltext . "</div>\n";
5512                        }
5513                }
5514                if ($lastfile) {
5515                        print "</td></tr>\n";
5516                        if ($matches > 1000) {
5517                                print "<div class=\"diff nodifferences\">Too many matches, listing trimmed</div>\n";
5518                        }
5519                } else {
5520                        print "<div class=\"diff nodifferences\">No matches found</div>\n";
5521                }
5522                close $fd;
5523
5524                print "</table>\n";
5525        }
5526        git_footer_html();
5527}
5528
5529sub git_search_help {
5530        git_header_html();
5531        git_print_page_nav('','', $hash,$hash,$hash);
5532        print <<EOT;
5533<p><strong>Pattern</strong> is by default a normal string that is matched precisely (but without
5534regard to case, except in the case of pickaxe). However, when you check the <em>re</em> checkbox,
5535the pattern entered is recognized as the POSIX extended
5536<a href="http://en.wikipedia.org/wiki/Regular_expression">regular expression</a> (also case
5537insensitive).</p>
5538<dl>
5539<dt><b>commit</b></dt>
5540<dd>The commit messages and authorship information will be scanned for the given pattern.</dd>
5541EOT
5542        my ($have_grep) = gitweb_check_feature('grep');
5543        if ($have_grep) {
5544                print <<EOT;
5545<dt><b>grep</b></dt>
5546<dd>All files in the currently selected tree (HEAD unless you are explicitly browsing
5547    a different one) are searched for the given pattern. On large trees, this search can take
5548a while and put some strain on the server, so please use it with some consideration. Note that
5549due to git-grep peculiarity, currently if regexp mode is turned off, the matches are
5550case-sensitive.</dd>
5551EOT
5552        }
5553        print <<EOT;
5554<dt><b>author</b></dt>
5555<dd>Name and e-mail of the change author and date of birth of the patch will be scanned for the given pattern.</dd>
5556<dt><b>committer</b></dt>
5557<dd>Name and e-mail of the committer and date of commit will be scanned for the given pattern.</dd>
5558EOT
5559        my ($have_pickaxe) = gitweb_check_feature('pickaxe');
5560        if ($have_pickaxe) {
5561                print <<EOT;
5562<dt><b>pickaxe</b></dt>
5563<dd>All commits that caused the string to appear or disappear from any file (changes that
5564added, removed or "modified" the string) will be listed. This search can take a while and
5565takes a lot of strain on the server, so please use it wisely. Note that since you may be
5566interested even in changes just changing the case as well, this search is case sensitive.</dd>
5567EOT
5568        }
5569        print "</dl>\n";
5570        git_footer_html();
5571}
5572
5573sub git_shortlog {
5574        my $head = git_get_head_hash($project);
5575        if (!defined $hash) {
5576                $hash = $head;
5577        }
5578        if (!defined $page) {
5579                $page = 0;
5580        }
5581        my $refs = git_get_references();
5582
5583        my @commitlist = parse_commits($hash, 101, (100 * $page));
5584
5585        my $paging_nav = format_paging_nav('shortlog', $hash, $head, $page, $#commitlist >= 100);
5586        my $next_link = '';
5587        if ($#commitlist >= 100) {
5588                $next_link =
5589                        $cgi->a({-href => href(-replay=>1, page=>$page+1),
5590                                 -accesskey => "n", -title => "Alt-n"}, "next");
5591        }
5592
5593        git_header_html();
5594        git_print_page_nav('shortlog','', $hash,$hash,$hash, $paging_nav);
5595        git_print_header_div('summary', $project);
5596
5597        git_shortlog_body(\@commitlist, 0, 99, $refs, $next_link);
5598
5599        git_footer_html();
5600}
5601
5602## ......................................................................
5603## feeds (RSS, Atom; OPML)
5604
5605sub git_feed {
5606        my $format = shift || 'atom';
5607        my ($have_blame) = gitweb_check_feature('blame');
5608
5609        # Atom: http://www.atomenabled.org/developers/syndication/
5610        # RSS:  http://www.notestips.com/80256B3A007F2692/1/NAMO5P9UPQ
5611        if ($format ne 'rss' && $format ne 'atom') {
5612                die_error(undef, "Unknown web feed format");
5613        }
5614
5615        # log/feed of current (HEAD) branch, log of given branch, history of file/directory
5616        my $head = $hash || 'HEAD';
5617        my @commitlist = parse_commits($head, 150, 0, $file_name);
5618
5619        my %latest_commit;
5620        my %latest_date;
5621        my $content_type = "application/$format+xml";
5622        if (defined $cgi->http('HTTP_ACCEPT') &&
5623                 $cgi->Accept('text/xml') > $cgi->Accept($content_type)) {
5624                # browser (feed reader) prefers text/xml
5625                $content_type = 'text/xml';
5626        }
5627        if (defined($commitlist[0])) {
5628                %latest_commit = %{$commitlist[0]};
5629                %latest_date   = parse_date($latest_commit{'author_epoch'});
5630                print $cgi->header(
5631                        -type => $content_type,
5632                        -charset => 'utf-8',
5633                        -last_modified => $latest_date{'rfc2822'});
5634        } else {
5635                print $cgi->header(
5636                        -type => $content_type,
5637                        -charset => 'utf-8');
5638        }
5639
5640        # Optimization: skip generating the body if client asks only
5641        # for Last-Modified date.
5642        return if ($cgi->request_method() eq 'HEAD');
5643
5644        # header variables
5645        my $title = "$site_name - $project/$action";
5646        my $feed_type = 'log';
5647        if (defined $hash) {
5648                $title .= " - '$hash'";
5649                $feed_type = 'branch log';
5650                if (defined $file_name) {
5651                        $title .= " :: $file_name";
5652                        $feed_type = 'history';
5653                }
5654        } elsif (defined $file_name) {
5655                $title .= " - $file_name";
5656                $feed_type = 'history';
5657        }
5658        $title .= " $feed_type";
5659        my $descr = git_get_project_description($project);
5660        if (defined $descr) {
5661                $descr = esc_html($descr);
5662        } else {
5663                $descr = "$project " .
5664                         ($format eq 'rss' ? 'RSS' : 'Atom') .
5665                         " feed";
5666        }
5667        my $owner = git_get_project_owner($project);
5668        $owner = esc_html($owner);
5669
5670        #header
5671        my $alt_url;
5672        if (defined $file_name) {
5673                $alt_url = href(-full=>1, action=>"history", hash=>$hash, file_name=>$file_name);
5674        } elsif (defined $hash) {
5675                $alt_url = href(-full=>1, action=>"log", hash=>$hash);
5676        } else {
5677                $alt_url = href(-full=>1, action=>"summary");
5678        }
5679        print qq!<?xml version="1.0" encoding="utf-8"?>\n!;
5680        if ($format eq 'rss') {
5681                print <<XML;
5682<rss version="2.0" xmlns:content="http://purl.org/rss/1.0/modules/content/">
5683<channel>
5684XML
5685                print "<title>$title</title>\n" .
5686                      "<link>$alt_url</link>\n" .
5687                      "<description>$descr</description>\n" .
5688                      "<language>en</language>\n";
5689        } elsif ($format eq 'atom') {
5690                print <<XML;
5691<feed xmlns="http://www.w3.org/2005/Atom">
5692XML
5693                print "<title>$title</title>\n" .
5694                      "<subtitle>$descr</subtitle>\n" .
5695                      '<link rel="alternate" type="text/html" href="' .
5696                      $alt_url . '" />' . "\n" .
5697                      '<link rel="self" type="' . $content_type . '" href="' .
5698                      $cgi->self_url() . '" />' . "\n" .
5699                      "<id>" . href(-full=>1) . "</id>\n" .
5700                      # use project owner for feed author
5701                      "<author><name>$owner</name></author>\n";
5702                if (defined $favicon) {
5703                        print "<icon>" . esc_url($favicon) . "</icon>\n";
5704                }
5705                if (defined $logo_url) {
5706                        # not twice as wide as tall: 72 x 27 pixels
5707                        print "<logo>" . esc_url($logo) . "</logo>\n";
5708                }
5709                if (! %latest_date) {
5710                        # dummy date to keep the feed valid until commits trickle in:
5711                        print "<updated>1970-01-01T00:00:00Z</updated>\n";
5712                } else {
5713                        print "<updated>$latest_date{'iso-8601'}</updated>\n";
5714                }
5715        }
5716
5717        # contents
5718        for (my $i = 0; $i <= $#commitlist; $i++) {
5719                my %co = %{$commitlist[$i]};
5720                my $commit = $co{'id'};
5721                # we read 150, we always show 30 and the ones more recent than 48 hours
5722                if (($i >= 20) && ((time - $co{'author_epoch'}) > 48*60*60)) {
5723                        last;
5724                }
5725                my %cd = parse_date($co{'author_epoch'});
5726
5727                # get list of changed files
5728                open my $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
5729                        $co{'parent'} || "--root",
5730                        $co{'id'}, "--", (defined $file_name ? $file_name : ())
5731                        or next;
5732                my @difftree = map { chomp; $_ } <$fd>;
5733                close $fd
5734                        or next;
5735
5736                # print element (entry, item)
5737                my $co_url = href(-full=>1, action=>"commitdiff", hash=>$commit);
5738                if ($format eq 'rss') {
5739                        print "<item>\n" .
5740                              "<title>" . esc_html($co{'title'}) . "</title>\n" .
5741                              "<author>" . esc_html($co{'author'}) . "</author>\n" .
5742                              "<pubDate>$cd{'rfc2822'}</pubDate>\n" .
5743                              "<guid isPermaLink=\"true\">$co_url</guid>\n" .
5744                              "<link>$co_url</link>\n" .
5745                              "<description>" . esc_html($co{'title'}) . "</description>\n" .
5746                              "<content:encoded>" .
5747                              "<![CDATA[\n";
5748                } elsif ($format eq 'atom') {
5749                        print "<entry>\n" .
5750                              "<title type=\"html\">" . esc_html($co{'title'}) . "</title>\n" .
5751                              "<updated>$cd{'iso-8601'}</updated>\n" .
5752                              "<author>\n" .
5753                              "  <name>" . esc_html($co{'author_name'}) . "</name>\n";
5754                        if ($co{'author_email'}) {
5755                                print "  <email>" . esc_html($co{'author_email'}) . "</email>\n";
5756                        }
5757                        print "</author>\n" .
5758                              # use committer for contributor
5759                              "<contributor>\n" .
5760                              "  <name>" . esc_html($co{'committer_name'}) . "</name>\n";
5761                        if ($co{'committer_email'}) {
5762                                print "  <email>" . esc_html($co{'committer_email'}) . "</email>\n";
5763                        }
5764                        print "</contributor>\n" .
5765                              "<published>$cd{'iso-8601'}</published>\n" .
5766                              "<link rel=\"alternate\" type=\"text/html\" href=\"$co_url\" />\n" .
5767                              "<id>$co_url</id>\n" .
5768                              "<content type=\"xhtml\" xml:base=\"" . esc_url($my_url) . "\">\n" .
5769                              "<div xmlns=\"http://www.w3.org/1999/xhtml\">\n";
5770                }
5771                my $comment = $co{'comment'};
5772                print "<pre>\n";
5773                foreach my $line (@$comment) {
5774                        $line = esc_html($line);
5775                        print "$line\n";
5776                }
5777                print "</pre><ul>\n";
5778                foreach my $difftree_line (@difftree) {
5779                        my %difftree = parse_difftree_raw_line($difftree_line);
5780                        next if !$difftree{'from_id'};
5781
5782                        my $file = $difftree{'file'} || $difftree{'to_file'};
5783
5784                        print "<li>" .
5785                              "[" .
5786                              $cgi->a({-href => href(-full=>1, action=>"blobdiff",
5787                                                     hash=>$difftree{'to_id'}, hash_parent=>$difftree{'from_id'},
5788                                                     hash_base=>$co{'id'}, hash_parent_base=>$co{'parent'},
5789                                                     file_name=>$file, file_parent=>$difftree{'from_file'}),
5790                                      -title => "diff"}, 'D');
5791                        if ($have_blame) {
5792                                print $cgi->a({-href => href(-full=>1, action=>"blame",
5793                                                             file_name=>$file, hash_base=>$commit),
5794                                              -title => "blame"}, 'B');
5795                        }
5796                        # if this is not a feed of a file history
5797                        if (!defined $file_name || $file_name ne $file) {
5798                                print $cgi->a({-href => href(-full=>1, action=>"history",
5799                                                             file_name=>$file, hash=>$commit),
5800                                              -title => "history"}, 'H');
5801                        }
5802                        $file = esc_path($file);
5803                        print "] ".
5804                              "$file</li>\n";
5805                }
5806                if ($format eq 'rss') {
5807                        print "</ul>]]>\n" .
5808                              "</content:encoded>\n" .
5809                              "</item>\n";
5810                } elsif ($format eq 'atom') {
5811                        print "</ul>\n</div>\n" .
5812                              "</content>\n" .
5813                              "</entry>\n";
5814                }
5815        }
5816
5817        # end of feed
5818        if ($format eq 'rss') {
5819                print "</channel>\n</rss>\n";
5820        }       elsif ($format eq 'atom') {
5821                print "</feed>\n";
5822        }
5823}
5824
5825sub git_rss {
5826        git_feed('rss');
5827}
5828
5829sub git_atom {
5830        git_feed('atom');
5831}
5832
5833sub git_opml {
5834        my @list = git_get_projects_list();
5835
5836        print $cgi->header(-type => 'text/xml', -charset => 'utf-8');
5837        print <<XML;
5838<?xml version="1.0" encoding="utf-8"?>
5839<opml version="1.0">
5840<head>
5841  <title>$site_name OPML Export</title>
5842</head>
5843<body>
5844<outline text="git RSS feeds">
5845XML
5846
5847        foreach my $pr (@list) {
5848                my %proj = %$pr;
5849                my $head = git_get_head_hash($proj{'path'});
5850                if (!defined $head) {
5851                        next;
5852                }
5853                $git_dir = "$projectroot/$proj{'path'}";
5854                my %co = parse_commit($head);
5855                if (!%co) {
5856                        next;
5857                }
5858
5859                my $path = esc_html(chop_str($proj{'path'}, 25, 5));
5860                my $rss  = "$my_url?p=$proj{'path'};a=rss";
5861                my $html = "$my_url?p=$proj{'path'};a=summary";
5862                print "<outline type=\"rss\" text=\"$path\" title=\"$path\" xmlUrl=\"$rss\" htmlUrl=\"$html\"/>\n";
5863        }
5864        print <<XML;
5865</outline>
5866</body>
5867</opml>
5868XML
5869}