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

   1#!/usr/bin/perl
   2
   3# gitweb - simple web interface to track changes in git repositories
   4#
   5# (C) 2005-2006, Kay Sievers <kay.sievers@vrfy.org>
   6# (C) 2005, Christian Gierke
   7#
   8# This program is licensed under the GPLv2
   9
  10use strict;
  11use warnings;
  12use CGI qw(:standard :escapeHTML -nosticky);
  13use CGI::Util qw(unescape);
  14use CGI::Carp qw(fatalsToBrowser);
  15use Encode;
  16use Fcntl ':mode';
  17use File::Find qw();
  18use File::Basename qw(basename);
  19binmode STDOUT, ':utf8';
  20
  21BEGIN {
  22        CGI->compile() if $ENV{'MOD_PERL'};
  23}
  24
  25our $cgi = new CGI;
  26our $version = "++GIT_VERSION++";
  27our $my_url = $cgi->url();
  28our $my_uri = $cgi->url(-absolute => 1);
  29
  30# core git executable to use
  31# this can just be "git" if your webserver has a sensible PATH
  32our $GIT = "++GIT_BINDIR++/git";
  33
  34# absolute fs-path which will be prepended to the project path
  35#our $projectroot = "/pub/scm";
  36our $projectroot = "++GITWEB_PROJECTROOT++";
  37
  38# 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                } else {
2643                        $cgi->param("p", $project);
2644                }
2645                $cgi->param("a", "search");
2646                $cgi->param("h", $search_hash);
2647                print $cgi->startform(-method => "get", -action => $action) .
2648                      "<div class=\"search\">\n" .
2649                      (!$use_pathinfo && $cgi->hidden(-name => "p") . "\n") .
2650                      $cgi->hidden(-name => "a") . "\n" .
2651                      $cgi->hidden(-name => "h") . "\n" .
2652                      $cgi->popup_menu(-name => 'st', -default => 'commit',
2653                                       -values => ['commit', 'grep', 'author', 'committer', 'pickaxe']) .
2654                      $cgi->sup($cgi->a({-href => href(action=>"search_help")}, "?")) .
2655                      " search:\n",
2656                      $cgi->textfield(-name => "s", -value => $searchtext) . "\n" .
2657                      "<span title=\"Extended regular expression\">" .
2658                      $cgi->checkbox(-name => 'sr', -value => 1, -label => 're',
2659                                     -checked => $search_use_regexp) .
2660                      "</span>" .
2661                      "</div>" .
2662                      $cgi->end_form() . "\n";
2663        }
2664}
2665
2666sub git_footer_html {
2667        my $feed_class = 'rss_logo';
2668
2669        print "<div class=\"page_footer\">\n";
2670        if (defined $project) {
2671                my $descr = git_get_project_description($project);
2672                if (defined $descr) {
2673                        print "<div class=\"page_footer_text\">" . esc_html($descr) . "</div>\n";
2674                }
2675
2676                my %href_params = get_feed_info();
2677                if (!%href_params) {
2678                        $feed_class .= ' generic';
2679                }
2680                $href_params{'-title'} ||= 'log';
2681
2682                foreach my $format qw(RSS Atom) {
2683                        $href_params{'action'} = lc($format);
2684                        print $cgi->a({-href => href(%href_params),
2685                                      -title => "$href_params{'-title'} $format feed",
2686                                      -class => $feed_class}, $format)."\n";
2687                }
2688
2689        } else {
2690                print $cgi->a({-href => href(project=>undef, action=>"opml"),
2691                              -class => $feed_class}, "OPML") . " ";
2692                print $cgi->a({-href => href(project=>undef, action=>"project_index"),
2693                              -class => $feed_class}, "TXT") . "\n";
2694        }
2695        print "</div>\n"; # class="page_footer"
2696
2697        if (-f $site_footer) {
2698                open (my $fd, $site_footer);
2699                print <$fd>;
2700                close $fd;
2701        }
2702
2703        print "</body>\n" .
2704              "</html>";
2705}
2706
2707sub die_error {
2708        my $status = shift || "403 Forbidden";
2709        my $error = shift || "Malformed query, file missing or permission denied";
2710
2711        git_header_html($status);
2712        print <<EOF;
2713<div class="page_body">
2714<br /><br />
2715$status - $error
2716<br />
2717</div>
2718EOF
2719        git_footer_html();
2720        exit;
2721}
2722
2723## ----------------------------------------------------------------------
2724## functions printing or outputting HTML: navigation
2725
2726sub git_print_page_nav {
2727        my ($current, $suppress, $head, $treehead, $treebase, $extra) = @_;
2728        $extra = '' if !defined $extra; # pager or formats
2729
2730        my @navs = qw(summary shortlog log commit commitdiff tree);
2731        if ($suppress) {
2732                @navs = grep { $_ ne $suppress } @navs;
2733        }
2734
2735        my %arg = map { $_ => {action=>$_} } @navs;
2736        if (defined $head) {
2737                for (qw(commit commitdiff)) {
2738                        $arg{$_}{'hash'} = $head;
2739                }
2740                if ($current =~ m/^(tree | log | shortlog | commit | commitdiff | search)$/x) {
2741                        for (qw(shortlog log)) {
2742                                $arg{$_}{'hash'} = $head;
2743                        }
2744                }
2745        }
2746        $arg{'tree'}{'hash'} = $treehead if defined $treehead;
2747        $arg{'tree'}{'hash_base'} = $treebase if defined $treebase;
2748
2749        print "<div class=\"page_nav\">\n" .
2750                (join " | ",
2751                 map { $_ eq $current ?
2752                       $_ : $cgi->a({-href => href(%{$arg{$_}})}, "$_")
2753                 } @navs);
2754        print "<br/>\n$extra<br/>\n" .
2755              "</div>\n";
2756}
2757
2758sub format_paging_nav {
2759        my ($action, $hash, $head, $page, $nrevs) = @_;
2760        my $paging_nav;
2761
2762
2763        if ($hash ne $head || $page) {
2764                $paging_nav .= $cgi->a({-href => href(action=>$action)}, "HEAD");
2765        } else {
2766                $paging_nav .= "HEAD";
2767        }
2768
2769        if ($page > 0) {
2770                $paging_nav .= " &sdot; " .
2771                        $cgi->a({-href => href(-replay=>1, page=>$page-1),
2772                                 -accesskey => "p", -title => "Alt-p"}, "prev");
2773        } else {
2774                $paging_nav .= " &sdot; prev";
2775        }
2776
2777        if ($nrevs >= (100 * ($page+1)-1)) {
2778                $paging_nav .= " &sdot; " .
2779                        $cgi->a({-href => href(-replay=>1, page=>$page+1),
2780                                 -accesskey => "n", -title => "Alt-n"}, "next");
2781        } else {
2782                $paging_nav .= " &sdot; next";
2783        }
2784
2785        return $paging_nav;
2786}
2787
2788## ......................................................................
2789## functions printing or outputting HTML: div
2790
2791sub git_print_header_div {
2792        my ($action, $title, $hash, $hash_base) = @_;
2793        my %args = ();
2794
2795        $args{'action'} = $action;
2796        $args{'hash'} = $hash if $hash;
2797        $args{'hash_base'} = $hash_base if $hash_base;
2798
2799        print "<div class=\"header\">\n" .
2800              $cgi->a({-href => href(%args), -class => "title"},
2801              $title ? $title : $action) .
2802              "\n</div>\n";
2803}
2804
2805#sub git_print_authorship (\%) {
2806sub git_print_authorship {
2807        my $co = shift;
2808
2809        my %ad = parse_date($co->{'author_epoch'}, $co->{'author_tz'});
2810        print "<div class=\"author_date\">" .
2811              esc_html($co->{'author_name'}) .
2812              " [$ad{'rfc2822'}";
2813        if ($ad{'hour_local'} < 6) {
2814                printf(" (<span class=\"atnight\">%02d:%02d</span> %s)",
2815                       $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
2816        } else {
2817                printf(" (%02d:%02d %s)",
2818                       $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
2819        }
2820        print "]</div>\n";
2821}
2822
2823sub git_print_page_path {
2824        my $name = shift;
2825        my $type = shift;
2826        my $hb = shift;
2827
2828
2829        print "<div class=\"page_path\">";
2830        print $cgi->a({-href => href(action=>"tree", hash_base=>$hb),
2831                      -title => 'tree root'}, to_utf8("[$project]"));
2832        print " / ";
2833        if (defined $name) {
2834                my @dirname = split '/', $name;
2835                my $basename = pop @dirname;
2836                my $fullname = '';
2837
2838                foreach my $dir (@dirname) {
2839                        $fullname .= ($fullname ? '/' : '') . $dir;
2840                        print $cgi->a({-href => href(action=>"tree", file_name=>$fullname,
2841                                                     hash_base=>$hb),
2842                                      -title => $fullname}, esc_path($dir));
2843                        print " / ";
2844                }
2845                if (defined $type && $type eq 'blob') {
2846                        print $cgi->a({-href => href(action=>"blob_plain", file_name=>$file_name,
2847                                                     hash_base=>$hb),
2848                                      -title => $name}, esc_path($basename));
2849                } elsif (defined $type && $type eq 'tree') {
2850                        print $cgi->a({-href => href(action=>"tree", file_name=>$file_name,
2851                                                     hash_base=>$hb),
2852                                      -title => $name}, esc_path($basename));
2853                        print " / ";
2854                } else {
2855                        print esc_path($basename);
2856                }
2857        }
2858        print "<br/></div>\n";
2859}
2860
2861# sub git_print_log (\@;%) {
2862sub git_print_log ($;%) {
2863        my $log = shift;
2864        my %opts = @_;
2865
2866        if ($opts{'-remove_title'}) {
2867                # remove title, i.e. first line of log
2868                shift @$log;
2869        }
2870        # remove leading empty lines
2871        while (defined $log->[0] && $log->[0] eq "") {
2872                shift @$log;
2873        }
2874
2875        # print log
2876        my $signoff = 0;
2877        my $empty = 0;
2878        foreach my $line (@$log) {
2879                if ($line =~ m/^ *(signed[ \-]off[ \-]by[ :]|acked[ \-]by[ :]|cc[ :])/i) {
2880                        $signoff = 1;
2881                        $empty = 0;
2882                        if (! $opts{'-remove_signoff'}) {
2883                                print "<span class=\"signoff\">" . esc_html($line) . "</span><br/>\n";
2884                                next;
2885                        } else {
2886                                # remove signoff lines
2887                                next;
2888                        }
2889                } else {
2890                        $signoff = 0;
2891                }
2892
2893                # print only one empty line
2894                # do not print empty line after signoff
2895                if ($line eq "") {
2896                        next if ($empty || $signoff);
2897                        $empty = 1;
2898                } else {
2899                        $empty = 0;
2900                }
2901
2902                print format_log_line_html($line) . "<br/>\n";
2903        }
2904
2905        if ($opts{'-final_empty_line'}) {
2906                # end with single empty line
2907                print "<br/>\n" unless $empty;
2908        }
2909}
2910
2911# return link target (what link points to)
2912sub git_get_link_target {
2913        my $hash = shift;
2914        my $link_target;
2915
2916        # read link
2917        open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
2918                or return;
2919        {
2920                local $/;
2921                $link_target = <$fd>;
2922        }
2923        close $fd
2924                or return;
2925
2926        return $link_target;
2927}
2928
2929# given link target, and the directory (basedir) the link is in,
2930# return target of link relative to top directory (top tree);
2931# return undef if it is not possible (including absolute links).
2932sub normalize_link_target {
2933        my ($link_target, $basedir, $hash_base) = @_;
2934
2935        # we can normalize symlink target only if $hash_base is provided
2936        return unless $hash_base;
2937
2938        # absolute symlinks (beginning with '/') cannot be normalized
2939        return if (substr($link_target, 0, 1) eq '/');
2940
2941        # normalize link target to path from top (root) tree (dir)
2942        my $path;
2943        if ($basedir) {
2944                $path = $basedir . '/' . $link_target;
2945        } else {
2946                # we are in top (root) tree (dir)
2947                $path = $link_target;
2948        }
2949
2950        # remove //, /./, and /../
2951        my @path_parts;
2952        foreach my $part (split('/', $path)) {
2953                # discard '.' and ''
2954                next if (!$part || $part eq '.');
2955                # handle '..'
2956                if ($part eq '..') {
2957                        if (@path_parts) {
2958                                pop @path_parts;
2959                        } else {
2960                                # link leads outside repository (outside top dir)
2961                                return;
2962                        }
2963                } else {
2964                        push @path_parts, $part;
2965                }
2966        }
2967        $path = join('/', @path_parts);
2968
2969        return $path;
2970}
2971
2972# print tree entry (row of git_tree), but without encompassing <tr> element
2973sub git_print_tree_entry {
2974        my ($t, $basedir, $hash_base, $have_blame) = @_;
2975
2976        my %base_key = ();
2977        $base_key{'hash_base'} = $hash_base if defined $hash_base;
2978
2979        # The format of a table row is: mode list link.  Where mode is
2980        # the mode of the entry, list is the name of the entry, an href,
2981        # and link is the action links of the entry.
2982
2983        print "<td class=\"mode\">" . mode_str($t->{'mode'}) . "</td>\n";
2984        if ($t->{'type'} eq "blob") {
2985                print "<td class=\"list\">" .
2986                        $cgi->a({-href => href(action=>"blob", hash=>$t->{'hash'},
2987                                               file_name=>"$basedir$t->{'name'}", %base_key),
2988                                -class => "list"}, esc_path($t->{'name'}));
2989                if (S_ISLNK(oct $t->{'mode'})) {
2990                        my $link_target = git_get_link_target($t->{'hash'});
2991                        if ($link_target) {
2992                                my $norm_target = normalize_link_target($link_target, $basedir, $hash_base);
2993                                if (defined $norm_target) {
2994                                        print " -> " .
2995                                              $cgi->a({-href => href(action=>"object", hash_base=>$hash_base,
2996                                                                     file_name=>$norm_target),
2997                                                       -title => $norm_target}, esc_path($link_target));
2998                                } else {
2999                                        print " -> " . esc_path($link_target);
3000                                }
3001                        }
3002                }
3003                print "</td>\n";
3004                print "<td class=\"link\">";
3005                print $cgi->a({-href => href(action=>"blob", hash=>$t->{'hash'},
3006                                             file_name=>"$basedir$t->{'name'}", %base_key)},
3007                              "blob");
3008                if ($have_blame) {
3009                        print " | " .
3010                              $cgi->a({-href => href(action=>"blame", hash=>$t->{'hash'},
3011                                                     file_name=>"$basedir$t->{'name'}", %base_key)},
3012                                      "blame");
3013                }
3014                if (defined $hash_base) {
3015                        print " | " .
3016                              $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
3017                                                     hash=>$t->{'hash'}, file_name=>"$basedir$t->{'name'}")},
3018                                      "history");
3019                }
3020                print " | " .
3021                        $cgi->a({-href => href(action=>"blob_plain", hash_base=>$hash_base,
3022                                               file_name=>"$basedir$t->{'name'}")},
3023                                "raw");
3024                print "</td>\n";
3025
3026        } elsif ($t->{'type'} eq "tree") {
3027                print "<td class=\"list\">";
3028                print $cgi->a({-href => href(action=>"tree", hash=>$t->{'hash'},
3029                                             file_name=>"$basedir$t->{'name'}", %base_key)},
3030                              esc_path($t->{'name'}));
3031                print "</td>\n";
3032                print "<td class=\"link\">";
3033                print $cgi->a({-href => href(action=>"tree", hash=>$t->{'hash'},
3034                                             file_name=>"$basedir$t->{'name'}", %base_key)},
3035                              "tree");
3036                if (defined $hash_base) {
3037                        print " | " .
3038                              $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
3039                                                     file_name=>"$basedir$t->{'name'}")},
3040                                      "history");
3041                }
3042                print "</td>\n";
3043        } else {
3044                # unknown object: we can only present history for it
3045                # (this includes 'commit' object, i.e. submodule support)
3046                print "<td class=\"list\">" .
3047                      esc_path($t->{'name'}) .
3048                      "</td>\n";
3049                print "<td class=\"link\">";
3050                if (defined $hash_base) {
3051                        print $cgi->a({-href => href(action=>"history",
3052                                                     hash_base=>$hash_base,
3053                                                     file_name=>"$basedir$t->{'name'}")},
3054                                      "history");
3055                }
3056                print "</td>\n";
3057        }
3058}
3059
3060## ......................................................................
3061## functions printing large fragments of HTML
3062
3063# get pre-image filenames for merge (combined) diff
3064sub fill_from_file_info {
3065        my ($diff, @parents) = @_;
3066
3067        $diff->{'from_file'} = [ ];
3068        $diff->{'from_file'}[$diff->{'nparents'} - 1] = undef;
3069        for (my $i = 0; $i < $diff->{'nparents'}; $i++) {
3070                if ($diff->{'status'}[$i] eq 'R' ||
3071                    $diff->{'status'}[$i] eq 'C') {
3072                        $diff->{'from_file'}[$i] =
3073                                git_get_path_by_hash($parents[$i], $diff->{'from_id'}[$i]);
3074                }
3075        }
3076
3077        return $diff;
3078}
3079
3080# is current raw difftree line of file deletion
3081sub is_deleted {
3082        my $diffinfo = shift;
3083
3084        return $diffinfo->{'to_id'} eq ('0' x 40);
3085}
3086
3087# does patch correspond to [previous] difftree raw line
3088# $diffinfo  - hashref of parsed raw diff format
3089# $patchinfo - hashref of parsed patch diff format
3090#              (the same keys as in $diffinfo)
3091sub is_patch_split {
3092        my ($diffinfo, $patchinfo) = @_;
3093
3094        return defined $diffinfo && defined $patchinfo
3095                && $diffinfo->{'to_file'} eq $patchinfo->{'to_file'};
3096}
3097
3098
3099sub git_difftree_body {
3100        my ($difftree, $hash, @parents) = @_;
3101        my ($parent) = $parents[0];
3102        my ($have_blame) = gitweb_check_feature('blame');
3103        print "<div class=\"list_head\">\n";
3104        if ($#{$difftree} > 10) {
3105                print(($#{$difftree} + 1) . " files changed:\n");
3106        }
3107        print "</div>\n";
3108
3109        print "<table class=\"" .
3110              (@parents > 1 ? "combined " : "") .
3111              "diff_tree\">\n";
3112
3113        # header only for combined diff in 'commitdiff' view
3114        my $has_header = @$difftree && @parents > 1 && $action eq 'commitdiff';
3115        if ($has_header) {
3116                # table header
3117                print "<thead><tr>\n" .
3118                       "<th></th><th></th>\n"; # filename, patchN link
3119                for (my $i = 0; $i < @parents; $i++) {
3120                        my $par = $parents[$i];
3121                        print "<th>" .
3122                              $cgi->a({-href => href(action=>"commitdiff",
3123                                                     hash=>$hash, hash_parent=>$par),
3124                                       -title => 'commitdiff to parent number ' .
3125                                                  ($i+1) . ': ' . substr($par,0,7)},
3126                                      $i+1) .
3127                              "&nbsp;</th>\n";
3128                }
3129                print "</tr></thead>\n<tbody>\n";
3130        }
3131
3132        my $alternate = 1;
3133        my $patchno = 0;
3134        foreach my $line (@{$difftree}) {
3135                my $diff = parsed_difftree_line($line);
3136
3137                if ($alternate) {
3138                        print "<tr class=\"dark\">\n";
3139                } else {
3140                        print "<tr class=\"light\">\n";
3141                }
3142                $alternate ^= 1;
3143
3144                if (exists $diff->{'nparents'}) { # combined diff
3145
3146                        fill_from_file_info($diff, @parents)
3147                                unless exists $diff->{'from_file'};
3148
3149                        if (!is_deleted($diff)) {
3150                                # file exists in the result (child) commit
3151                                print "<td>" .
3152                                      $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
3153                                                             file_name=>$diff->{'to_file'},
3154                                                             hash_base=>$hash),
3155                                              -class => "list"}, esc_path($diff->{'to_file'})) .
3156                                      "</td>\n";
3157                        } else {
3158                                print "<td>" .
3159                                      esc_path($diff->{'to_file'}) .
3160                                      "</td>\n";
3161                        }
3162
3163                        if ($action eq 'commitdiff') {
3164                                # link to patch
3165                                $patchno++;
3166                                print "<td class=\"link\">" .
3167                                      $cgi->a({-href => "#patch$patchno"}, "patch") .
3168                                      " | " .
3169                                      "</td>\n";
3170                        }
3171
3172                        my $has_history = 0;
3173                        my $not_deleted = 0;
3174                        for (my $i = 0; $i < $diff->{'nparents'}; $i++) {
3175                                my $hash_parent = $parents[$i];
3176                                my $from_hash = $diff->{'from_id'}[$i];
3177                                my $from_path = $diff->{'from_file'}[$i];
3178                                my $status = $diff->{'status'}[$i];
3179
3180                                $has_history ||= ($status ne 'A');
3181                                $not_deleted ||= ($status ne 'D');
3182
3183                                if ($status eq 'A') {
3184                                        print "<td  class=\"link\" align=\"right\"> | </td>\n";
3185                                } elsif ($status eq 'D') {
3186                                        print "<td class=\"link\">" .
3187                                              $cgi->a({-href => href(action=>"blob",
3188                                                                     hash_base=>$hash,
3189                                                                     hash=>$from_hash,
3190                                                                     file_name=>$from_path)},
3191                                                      "blob" . ($i+1)) .
3192                                              " | </td>\n";
3193                                } else {
3194                                        if ($diff->{'to_id'} eq $from_hash) {
3195                                                print "<td class=\"link nochange\">";
3196                                        } else {
3197                                                print "<td class=\"link\">";
3198                                        }
3199                                        print $cgi->a({-href => href(action=>"blobdiff",
3200                                                                     hash=>$diff->{'to_id'},
3201                                                                     hash_parent=>$from_hash,
3202                                                                     hash_base=>$hash,
3203                                                                     hash_parent_base=>$hash_parent,
3204                                                                     file_name=>$diff->{'to_file'},
3205                                                                     file_parent=>$from_path)},
3206                                                      "diff" . ($i+1)) .
3207                                              " | </td>\n";
3208                                }
3209                        }
3210
3211                        print "<td class=\"link\">";
3212                        if ($not_deleted) {
3213                                print $cgi->a({-href => href(action=>"blob",
3214                                                             hash=>$diff->{'to_id'},
3215                                                             file_name=>$diff->{'to_file'},
3216                                                             hash_base=>$hash)},
3217                                              "blob");
3218                                print " | " if ($has_history);
3219                        }
3220                        if ($has_history) {
3221                                print $cgi->a({-href => href(action=>"history",
3222                                                             file_name=>$diff->{'to_file'},
3223                                                             hash_base=>$hash)},
3224                                              "history");
3225                        }
3226                        print "</td>\n";
3227
3228                        print "</tr>\n";
3229                        next; # instead of 'else' clause, to avoid extra indent
3230                }
3231                # else ordinary diff
3232
3233                my ($to_mode_oct, $to_mode_str, $to_file_type);
3234                my ($from_mode_oct, $from_mode_str, $from_file_type);
3235                if ($diff->{'to_mode'} ne ('0' x 6)) {
3236                        $to_mode_oct = oct $diff->{'to_mode'};
3237                        if (S_ISREG($to_mode_oct)) { # only for regular file
3238                                $to_mode_str = sprintf("%04o", $to_mode_oct & 0777); # permission bits
3239                        }
3240                        $to_file_type = file_type($diff->{'to_mode'});
3241                }
3242                if ($diff->{'from_mode'} ne ('0' x 6)) {
3243                        $from_mode_oct = oct $diff->{'from_mode'};
3244                        if (S_ISREG($to_mode_oct)) { # only for regular file
3245                                $from_mode_str = sprintf("%04o", $from_mode_oct & 0777); # permission bits
3246                        }
3247                        $from_file_type = file_type($diff->{'from_mode'});
3248                }
3249
3250                if ($diff->{'status'} eq "A") { # created
3251                        my $mode_chng = "<span class=\"file_status new\">[new $to_file_type";
3252                        $mode_chng   .= " with mode: $to_mode_str" if $to_mode_str;
3253                        $mode_chng   .= "]</span>";
3254                        print "<td>";
3255                        print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
3256                                                     hash_base=>$hash, file_name=>$diff->{'file'}),
3257                                      -class => "list"}, esc_path($diff->{'file'}));
3258                        print "</td>\n";
3259                        print "<td>$mode_chng</td>\n";
3260                        print "<td class=\"link\">";
3261                        if ($action eq 'commitdiff') {
3262                                # link to patch
3263                                $patchno++;
3264                                print $cgi->a({-href => "#patch$patchno"}, "patch");
3265                                print " | ";
3266                        }
3267                        print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
3268                                                     hash_base=>$hash, file_name=>$diff->{'file'})},
3269                                      "blob");
3270                        print "</td>\n";
3271
3272                } elsif ($diff->{'status'} eq "D") { # deleted
3273                        my $mode_chng = "<span class=\"file_status deleted\">[deleted $from_file_type]</span>";
3274                        print "<td>";
3275                        print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'from_id'},
3276                                                     hash_base=>$parent, file_name=>$diff->{'file'}),
3277                                       -class => "list"}, esc_path($diff->{'file'}));
3278                        print "</td>\n";
3279                        print "<td>$mode_chng</td>\n";
3280                        print "<td class=\"link\">";
3281                        if ($action eq 'commitdiff') {
3282                                # link to patch
3283                                $patchno++;
3284                                print $cgi->a({-href => "#patch$patchno"}, "patch");
3285                                print " | ";
3286                        }
3287                        print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'from_id'},
3288                                                     hash_base=>$parent, file_name=>$diff->{'file'})},
3289                                      "blob") . " | ";
3290                        if ($have_blame) {
3291                                print $cgi->a({-href => href(action=>"blame", hash_base=>$parent,
3292                                                             file_name=>$diff->{'file'})},
3293                                              "blame") . " | ";
3294                        }
3295                        print $cgi->a({-href => href(action=>"history", hash_base=>$parent,
3296                                                     file_name=>$diff->{'file'})},
3297                                      "history");
3298                        print "</td>\n";
3299
3300                } elsif ($diff->{'status'} eq "M" || $diff->{'status'} eq "T") { # modified, or type changed
3301                        my $mode_chnge = "";
3302                        if ($diff->{'from_mode'} != $diff->{'to_mode'}) {
3303                                $mode_chnge = "<span class=\"file_status mode_chnge\">[changed";
3304                                if ($from_file_type ne $to_file_type) {
3305                                        $mode_chnge .= " from $from_file_type to $to_file_type";
3306                                }
3307                                if (($from_mode_oct & 0777) != ($to_mode_oct & 0777)) {
3308                                        if ($from_mode_str && $to_mode_str) {
3309                                                $mode_chnge .= " mode: $from_mode_str->$to_mode_str";
3310                                        } elsif ($to_mode_str) {
3311                                                $mode_chnge .= " mode: $to_mode_str";
3312                                        }
3313                                }
3314                                $mode_chnge .= "]</span>\n";
3315                        }
3316                        print "<td>";
3317                        print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
3318                                                     hash_base=>$hash, file_name=>$diff->{'file'}),
3319                                      -class => "list"}, esc_path($diff->{'file'}));
3320                        print "</td>\n";
3321                        print "<td>$mode_chnge</td>\n";
3322                        print "<td class=\"link\">";
3323                        if ($action eq 'commitdiff') {
3324                                # link to patch
3325                                $patchno++;
3326                                print $cgi->a({-href => "#patch$patchno"}, "patch") .
3327                                      " | ";
3328                        } elsif ($diff->{'to_id'} ne $diff->{'from_id'}) {
3329                                # "commit" view and modified file (not onlu mode changed)
3330                                print $cgi->a({-href => href(action=>"blobdiff",
3331                                                             hash=>$diff->{'to_id'}, hash_parent=>$diff->{'from_id'},
3332                                                             hash_base=>$hash, hash_parent_base=>$parent,
3333                                                             file_name=>$diff->{'file'})},
3334                                              "diff") .
3335                                      " | ";
3336                        }
3337                        print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
3338                                                     hash_base=>$hash, file_name=>$diff->{'file'})},
3339                                       "blob") . " | ";
3340                        if ($have_blame) {
3341                                print $cgi->a({-href => href(action=>"blame", hash_base=>$hash,
3342                                                             file_name=>$diff->{'file'})},
3343                                              "blame") . " | ";
3344                        }
3345                        print $cgi->a({-href => href(action=>"history", hash_base=>$hash,
3346                                                     file_name=>$diff->{'file'})},
3347                                      "history");
3348                        print "</td>\n";
3349
3350                } elsif ($diff->{'status'} eq "R" || $diff->{'status'} eq "C") { # renamed or copied
3351                        my %status_name = ('R' => 'moved', 'C' => 'copied');
3352                        my $nstatus = $status_name{$diff->{'status'}};
3353                        my $mode_chng = "";
3354                        if ($diff->{'from_mode'} != $diff->{'to_mode'}) {
3355                                # mode also for directories, so we cannot use $to_mode_str
3356                                $mode_chng = sprintf(", mode: %04o", $to_mode_oct & 0777);
3357                        }
3358                        print "<td>" .
3359                              $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
3360                                                     hash=>$diff->{'to_id'}, file_name=>$diff->{'to_file'}),
3361                                      -class => "list"}, esc_path($diff->{'to_file'})) . "</td>\n" .
3362                              "<td><span class=\"file_status $nstatus\">[$nstatus from " .
3363                              $cgi->a({-href => href(action=>"blob", hash_base=>$parent,
3364                                                     hash=>$diff->{'from_id'}, file_name=>$diff->{'from_file'}),
3365                                      -class => "list"}, esc_path($diff->{'from_file'})) .
3366                              " with " . (int $diff->{'similarity'}) . "% similarity$mode_chng]</span></td>\n" .
3367                              "<td class=\"link\">";
3368                        if ($action eq 'commitdiff') {
3369                                # link to patch
3370                                $patchno++;
3371                                print $cgi->a({-href => "#patch$patchno"}, "patch") .
3372                                      " | ";
3373                        } elsif ($diff->{'to_id'} ne $diff->{'from_id'}) {
3374                                # "commit" view and modified file (not only pure rename or copy)
3375                                print $cgi->a({-href => href(action=>"blobdiff",
3376                                                             hash=>$diff->{'to_id'}, hash_parent=>$diff->{'from_id'},
3377                                                             hash_base=>$hash, hash_parent_base=>$parent,
3378                                                             file_name=>$diff->{'to_file'}, file_parent=>$diff->{'from_file'})},
3379                                              "diff") .
3380                                      " | ";
3381                        }
3382                        print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
3383                                                     hash_base=>$parent, file_name=>$diff->{'to_file'})},
3384                                      "blob") . " | ";
3385                        if ($have_blame) {
3386                                print $cgi->a({-href => href(action=>"blame", hash_base=>$hash,
3387                                                             file_name=>$diff->{'to_file'})},
3388                                              "blame") . " | ";
3389                        }
3390                        print $cgi->a({-href => href(action=>"history", hash_base=>$hash,
3391                                                    file_name=>$diff->{'to_file'})},
3392                                      "history");
3393                        print "</td>\n";
3394
3395                } # we should not encounter Unmerged (U) or Unknown (X) status
3396                print "</tr>\n";
3397        }
3398        print "</tbody>" if $has_header;
3399        print "</table>\n";
3400}
3401
3402sub git_patchset_body {
3403        my ($fd, $difftree, $hash, @hash_parents) = @_;
3404        my ($hash_parent) = $hash_parents[0];
3405
3406        my $is_combined = (@hash_parents > 1);
3407        my $patch_idx = 0;
3408        my $patch_number = 0;
3409        my $patch_line;
3410        my $diffinfo;
3411        my $to_name;
3412        my (%from, %to);
3413
3414        print "<div class=\"patchset\">\n";
3415
3416        # skip to first patch
3417        while ($patch_line = <$fd>) {
3418                chomp $patch_line;
3419
3420                last if ($patch_line =~ m/^diff /);
3421        }
3422
3423 PATCH:
3424        while ($patch_line) {
3425
3426                # parse "git diff" header line
3427                if ($patch_line =~ m/^diff --git (\"(?:[^\\\"]*(?:\\.[^\\\"]*)*)\"|[^ "]*) (.*)$/) {
3428                        # $1 is from_name, which we do not use
3429                        $to_name = unquote($2);
3430                        $to_name =~ s!^b/!!;
3431                } elsif ($patch_line =~ m/^diff --(cc|combined) ("?.*"?)$/) {
3432                        # $1 is 'cc' or 'combined', which we do not use
3433                        $to_name = unquote($2);
3434                } else {
3435                        $to_name = undef;
3436                }
3437
3438                # check if current patch belong to current raw line
3439                # and parse raw git-diff line if needed
3440                if (is_patch_split($diffinfo, { 'to_file' => $to_name })) {
3441                        # this is continuation of a split patch
3442                        print "<div class=\"patch cont\">\n";
3443                } else {
3444                        # advance raw git-diff output if needed
3445                        $patch_idx++ if defined $diffinfo;
3446
3447                        # read and prepare patch information
3448                        $diffinfo = parsed_difftree_line($difftree->[$patch_idx]);
3449
3450                        # compact combined diff output can have some patches skipped
3451                        # find which patch (using pathname of result) we are at now;
3452                        if ($is_combined) {
3453                                while ($to_name ne $diffinfo->{'to_file'}) {
3454                                        print "<div class=\"patch\" id=\"patch". ($patch_idx+1) ."\">\n" .
3455                                              format_diff_cc_simplified($diffinfo, @hash_parents) .
3456                                              "</div>\n";  # class="patch"
3457
3458                                        $patch_idx++;
3459                                        $patch_number++;
3460
3461                                        last if $patch_idx > $#$difftree;
3462                                        $diffinfo = parsed_difftree_line($difftree->[$patch_idx]);
3463                                }
3464                        }
3465
3466                        # modifies %from, %to hashes
3467                        parse_from_to_diffinfo($diffinfo, \%from, \%to, @hash_parents);
3468
3469                        # this is first patch for raw difftree line with $patch_idx index
3470                        # we index @$difftree array from 0, but number patches from 1
3471                        print "<div class=\"patch\" id=\"patch". ($patch_idx+1) ."\">\n";
3472                }
3473
3474                # git diff header
3475                #assert($patch_line =~ m/^diff /) if DEBUG;
3476                #assert($patch_line !~ m!$/$!) if DEBUG; # is chomp-ed
3477                $patch_number++;
3478                # print "git diff" header
3479                print format_git_diff_header_line($patch_line, $diffinfo,
3480                                                  \%from, \%to);
3481
3482                # print extended diff header
3483                print "<div class=\"diff extended_header\">\n";
3484        EXTENDED_HEADER:
3485                while ($patch_line = <$fd>) {
3486                        chomp $patch_line;
3487
3488                        last EXTENDED_HEADER if ($patch_line =~ m/^--- |^diff /);
3489
3490                        print format_extended_diff_header_line($patch_line, $diffinfo,
3491                                                               \%from, \%to);
3492                }
3493                print "</div>\n"; # class="diff extended_header"
3494
3495                # from-file/to-file diff header
3496                if (! $patch_line) {
3497                        print "</div>\n"; # class="patch"
3498                        last PATCH;
3499                }
3500                next PATCH if ($patch_line =~ m/^diff /);
3501                #assert($patch_line =~ m/^---/) if DEBUG;
3502
3503                my $last_patch_line = $patch_line;
3504                $patch_line = <$fd>;
3505                chomp $patch_line;
3506                #assert($patch_line =~ m/^\+\+\+/) if DEBUG;
3507
3508                print format_diff_from_to_header($last_patch_line, $patch_line,
3509                                                 $diffinfo, \%from, \%to,
3510                                                 @hash_parents);
3511
3512                # the patch itself
3513        LINE:
3514                while ($patch_line = <$fd>) {
3515                        chomp $patch_line;
3516
3517                        next PATCH if ($patch_line =~ m/^diff /);
3518
3519                        print format_diff_line($patch_line, \%from, \%to);
3520                }
3521
3522        } continue {
3523                print "</div>\n"; # class="patch"
3524        }
3525
3526        # for compact combined (--cc) format, with chunk and patch simpliciaction
3527        # patchset might be empty, but there might be unprocessed raw lines
3528        for (++$patch_idx if $patch_number > 0;
3529             $patch_idx < @$difftree;
3530             ++$patch_idx) {
3531                # read and prepare patch information
3532                $diffinfo = parsed_difftree_line($difftree->[$patch_idx]);
3533
3534                # generate anchor for "patch" links in difftree / whatchanged part
3535                print "<div class=\"patch\" id=\"patch". ($patch_idx+1) ."\">\n" .
3536                      format_diff_cc_simplified($diffinfo, @hash_parents) .
3537                      "</div>\n";  # class="patch"
3538
3539                $patch_number++;
3540        }
3541
3542        if ($patch_number == 0) {
3543                if (@hash_parents > 1) {
3544                        print "<div class=\"diff nodifferences\">Trivial merge</div>\n";
3545                } else {
3546                        print "<div class=\"diff nodifferences\">No differences found</div>\n";
3547                }
3548        }
3549
3550        print "</div>\n"; # class="patchset"
3551}
3552
3553# . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3554
3555sub git_project_list_body {
3556        my ($projlist, $order, $from, $to, $extra, $no_header) = @_;
3557
3558        my ($check_forks) = gitweb_check_feature('forks');
3559
3560        my @projects;
3561        foreach my $pr (@$projlist) {
3562                my (@aa) = git_get_last_activity($pr->{'path'});
3563                unless (@aa) {
3564                        next;
3565                }
3566                ($pr->{'age'}, $pr->{'age_string'}) = @aa;
3567                if (!defined $pr->{'descr'}) {
3568                        my $descr = git_get_project_description($pr->{'path'}) || "";
3569                        $pr->{'descr_long'} = to_utf8($descr);
3570                        $pr->{'descr'} = chop_str($descr, $projects_list_description_width, 5);
3571                }
3572                if (!defined $pr->{'owner'}) {
3573                        $pr->{'owner'} = git_get_project_owner("$pr->{'path'}") || "";
3574                }
3575                if ($check_forks) {
3576                        my $pname = $pr->{'path'};
3577                        if (($pname =~ s/\.git$//) &&
3578                            ($pname !~ /\/$/) &&
3579                            (-d "$projectroot/$pname")) {
3580                                $pr->{'forks'} = "-d $projectroot/$pname";
3581                        }
3582                        else {
3583                                $pr->{'forks'} = 0;
3584                        }
3585                }
3586                push @projects, $pr;
3587        }
3588
3589        $order ||= $default_projects_order;
3590        $from = 0 unless defined $from;
3591        $to = $#projects if (!defined $to || $#projects < $to);
3592
3593        print "<table class=\"project_list\">\n";
3594        unless ($no_header) {
3595                print "<tr>\n";
3596                if ($check_forks) {
3597                        print "<th></th>\n";
3598                }
3599                if ($order eq "project") {
3600                        @projects = sort {$a->{'path'} cmp $b->{'path'}} @projects;
3601                        print "<th>Project</th>\n";
3602                } else {
3603                        print "<th>" .
3604                              $cgi->a({-href => href(project=>undef, order=>'project'),
3605                                       -class => "header"}, "Project") .
3606                              "</th>\n";
3607                }
3608                if ($order eq "descr") {
3609                        @projects = sort {$a->{'descr'} cmp $b->{'descr'}} @projects;
3610                        print "<th>Description</th>\n";
3611                } else {
3612                        print "<th>" .
3613                              $cgi->a({-href => href(project=>undef, order=>'descr'),
3614                                       -class => "header"}, "Description") .
3615                              "</th>\n";
3616                }
3617                if ($order eq "owner") {
3618                        @projects = sort {$a->{'owner'} cmp $b->{'owner'}} @projects;
3619                        print "<th>Owner</th>\n";
3620                } else {
3621                        print "<th>" .
3622                              $cgi->a({-href => href(project=>undef, order=>'owner'),
3623                                       -class => "header"}, "Owner") .
3624                              "</th>\n";
3625                }
3626                if ($order eq "age") {
3627                        @projects = sort {$a->{'age'} <=> $b->{'age'}} @projects;
3628                        print "<th>Last Change</th>\n";
3629                } else {
3630                        print "<th>" .
3631                              $cgi->a({-href => href(project=>undef, order=>'age'),
3632                                       -class => "header"}, "Last Change") .
3633                              "</th>\n";
3634                }
3635                print "<th></th>\n" .
3636                      "</tr>\n";
3637        }
3638        my $alternate = 1;
3639        for (my $i = $from; $i <= $to; $i++) {
3640                my $pr = $projects[$i];
3641                if ($alternate) {
3642                        print "<tr class=\"dark\">\n";
3643                } else {
3644                        print "<tr class=\"light\">\n";
3645                }
3646                $alternate ^= 1;
3647                if ($check_forks) {
3648                        print "<td>";
3649                        if ($pr->{'forks'}) {
3650                                print "<!-- $pr->{'forks'} -->\n";
3651                                print $cgi->a({-href => href(project=>$pr->{'path'}, action=>"forks")}, "+");
3652                        }
3653                        print "</td>\n";
3654                }
3655                print "<td>" . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary"),
3656                                        -class => "list"}, esc_html($pr->{'path'})) . "</td>\n" .
3657                      "<td>" . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary"),
3658                                        -class => "list", -title => $pr->{'descr_long'}},
3659                                        esc_html($pr->{'descr'})) . "</td>\n" .
3660                      "<td><i>" . chop_and_escape_str($pr->{'owner'}, 15) . "</i></td>\n";
3661                print "<td class=\"". age_class($pr->{'age'}) . "\">" .
3662                      (defined $pr->{'age_string'} ? $pr->{'age_string'} : "No commits") . "</td>\n" .
3663                      "<td class=\"link\">" .
3664                      $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary")}, "summary")   . " | " .
3665                      $cgi->a({-href => href(project=>$pr->{'path'}, action=>"shortlog")}, "shortlog") . " | " .
3666                      $cgi->a({-href => href(project=>$pr->{'path'}, action=>"log")}, "log") . " | " .
3667                      $cgi->a({-href => href(project=>$pr->{'path'}, action=>"tree")}, "tree") .
3668                      ($pr->{'forks'} ? " | " . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"forks")}, "forks") : '') .
3669                      "</td>\n" .
3670                      "</tr>\n";
3671        }
3672        if (defined $extra) {
3673                print "<tr>\n";
3674                if ($check_forks) {
3675                        print "<td></td>\n";
3676                }
3677                print "<td colspan=\"5\">$extra</td>\n" .
3678                      "</tr>\n";
3679        }
3680        print "</table>\n";
3681}
3682
3683sub git_shortlog_body {
3684        # uses global variable $project
3685        my ($commitlist, $from, $to, $refs, $extra) = @_;
3686
3687        $from = 0 unless defined $from;
3688        $to = $#{$commitlist} if (!defined $to || $#{$commitlist} < $to);
3689
3690        print "<table class=\"shortlog\">\n";
3691        my $alternate = 1;
3692        for (my $i = $from; $i <= $to; $i++) {
3693                my %co = %{$commitlist->[$i]};
3694                my $commit = $co{'id'};
3695                my $ref = format_ref_marker($refs, $commit);
3696                if ($alternate) {
3697                        print "<tr class=\"dark\">\n";
3698                } else {
3699                        print "<tr class=\"light\">\n";
3700                }
3701                $alternate ^= 1;
3702                my $author = chop_and_escape_str($co{'author_name'}, 10);
3703                # git_summary() used print "<td><i>$co{'age_string'}</i></td>\n" .
3704                print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
3705                      "<td><i>" . $author . "</i></td>\n" .
3706                      "<td>";
3707                print format_subject_html($co{'title'}, $co{'title_short'},
3708                                          href(action=>"commit", hash=>$commit), $ref);
3709                print "</td>\n" .
3710                      "<td class=\"link\">" .
3711                      $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") . " | " .
3712                      $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") . " | " .
3713                      $cgi->a({-href => href(action=>"tree", hash=>$commit, hash_base=>$commit)}, "tree");
3714                my $snapshot_links = format_snapshot_links($commit);
3715                if (defined $snapshot_links) {
3716                        print " | " . $snapshot_links;
3717                }
3718                print "</td>\n" .
3719                      "</tr>\n";
3720        }
3721        if (defined $extra) {
3722                print "<tr>\n" .
3723                      "<td colspan=\"4\">$extra</td>\n" .
3724                      "</tr>\n";
3725        }
3726        print "</table>\n";
3727}
3728
3729sub git_history_body {
3730        # Warning: assumes constant type (blob or tree) during history
3731        my ($commitlist, $from, $to, $refs, $hash_base, $ftype, $extra) = @_;
3732
3733        $from = 0 unless defined $from;
3734        $to = $#{$commitlist} unless (defined $to && $to <= $#{$commitlist});
3735
3736        print "<table class=\"history\">\n";
3737        my $alternate = 1;
3738        for (my $i = $from; $i <= $to; $i++) {
3739                my %co = %{$commitlist->[$i]};
3740                if (!%co) {
3741                        next;
3742                }
3743                my $commit = $co{'id'};
3744
3745                my $ref = format_ref_marker($refs, $commit);
3746
3747                if ($alternate) {
3748                        print "<tr class=\"dark\">\n";
3749                } else {
3750                        print "<tr class=\"light\">\n";
3751                }
3752                $alternate ^= 1;
3753        # shortlog uses      chop_str($co{'author_name'}, 10)
3754                my $author = chop_and_escape_str($co{'author_name'}, 15, 3);
3755                print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
3756                      "<td><i>" . $author . "</i></td>\n" .
3757                      "<td>";
3758                # originally git_history used chop_str($co{'title'}, 50)
3759                print format_subject_html($co{'title'}, $co{'title_short'},
3760                                          href(action=>"commit", hash=>$commit), $ref);
3761                print "</td>\n" .
3762                      "<td class=\"link\">" .
3763                      $cgi->a({-href => href(action=>$ftype, hash_base=>$commit, file_name=>$file_name)}, $ftype) . " | " .
3764                      $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff");
3765
3766                if ($ftype eq 'blob') {
3767                        my $blob_current = git_get_hash_by_path($hash_base, $file_name);
3768                        my $blob_parent  = git_get_hash_by_path($commit, $file_name);
3769                        if (defined $blob_current && defined $blob_parent &&
3770                                        $blob_current ne $blob_parent) {
3771                                print " | " .
3772                                        $cgi->a({-href => href(action=>"blobdiff",
3773                                                               hash=>$blob_current, hash_parent=>$blob_parent,
3774                                                               hash_base=>$hash_base, hash_parent_base=>$commit,
3775                                                               file_name=>$file_name)},
3776                                                "diff to current");
3777                        }
3778                }
3779                print "</td>\n" .
3780                      "</tr>\n";
3781        }
3782        if (defined $extra) {
3783                print "<tr>\n" .
3784                      "<td colspan=\"4\">$extra</td>\n" .
3785                      "</tr>\n";
3786        }
3787        print "</table>\n";
3788}
3789
3790sub git_tags_body {
3791        # uses global variable $project
3792        my ($taglist, $from, $to, $extra) = @_;
3793        $from = 0 unless defined $from;
3794        $to = $#{$taglist} if (!defined $to || $#{$taglist} < $to);
3795
3796        print "<table class=\"tags\">\n";
3797        my $alternate = 1;
3798        for (my $i = $from; $i <= $to; $i++) {
3799                my $entry = $taglist->[$i];
3800                my %tag = %$entry;
3801                my $comment = $tag{'subject'};
3802                my $comment_short;
3803                if (defined $comment) {
3804                        $comment_short = chop_str($comment, 30, 5);
3805                }
3806                if ($alternate) {
3807                        print "<tr class=\"dark\">\n";
3808                } else {
3809                        print "<tr class=\"light\">\n";
3810                }
3811                $alternate ^= 1;
3812                if (defined $tag{'age'}) {
3813                        print "<td><i>$tag{'age'}</i></td>\n";
3814                } else {
3815                        print "<td></td>\n";
3816                }
3817                print "<td>" .
3818                      $cgi->a({-href => href(action=>$tag{'reftype'}, hash=>$tag{'refid'}),
3819                               -class => "list name"}, esc_html($tag{'name'})) .
3820                      "</td>\n" .
3821                      "<td>";
3822                if (defined $comment) {
3823                        print format_subject_html($comment, $comment_short,
3824                                                  href(action=>"tag", hash=>$tag{'id'}));
3825                }
3826                print "</td>\n" .
3827                      "<td class=\"selflink\">";
3828                if ($tag{'type'} eq "tag") {
3829                        print $cgi->a({-href => href(action=>"tag", hash=>$tag{'id'})}, "tag");
3830                } else {
3831                        print "&nbsp;";
3832                }
3833                print "</td>\n" .
3834                      "<td class=\"link\">" . " | " .
3835                      $cgi->a({-href => href(action=>$tag{'reftype'}, hash=>$tag{'refid'})}, $tag{'reftype'});
3836                if ($tag{'reftype'} eq "commit") {
3837                        print " | " . $cgi->a({-href => href(action=>"shortlog", hash=>$tag{'fullname'})}, "shortlog") .
3838                              " | " . $cgi->a({-href => href(action=>"log", hash=>$tag{'fullname'})}, "log");
3839                } elsif ($tag{'reftype'} eq "blob") {
3840                        print " | " . $cgi->a({-href => href(action=>"blob_plain", hash=>$tag{'refid'})}, "raw");
3841                }
3842                print "</td>\n" .
3843                      "</tr>";
3844        }
3845        if (defined $extra) {
3846                print "<tr>\n" .
3847                      "<td colspan=\"5\">$extra</td>\n" .
3848                      "</tr>\n";
3849        }
3850        print "</table>\n";
3851}
3852
3853sub git_heads_body {
3854        # uses global variable $project
3855        my ($headlist, $head, $from, $to, $extra) = @_;
3856        $from = 0 unless defined $from;
3857        $to = $#{$headlist} if (!defined $to || $#{$headlist} < $to);
3858
3859        print "<table class=\"heads\">\n";
3860        my $alternate = 1;
3861        for (my $i = $from; $i <= $to; $i++) {
3862                my $entry = $headlist->[$i];
3863                my %ref = %$entry;
3864                my $curr = $ref{'id'} eq $head;
3865                if ($alternate) {
3866                        print "<tr class=\"dark\">\n";
3867                } else {
3868                        print "<tr class=\"light\">\n";
3869                }
3870                $alternate ^= 1;
3871                print "<td><i>$ref{'age'}</i></td>\n" .
3872                      ($curr ? "<td class=\"current_head\">" : "<td>") .
3873                      $cgi->a({-href => href(action=>"shortlog", hash=>$ref{'fullname'}),
3874                               -class => "list name"},esc_html($ref{'name'})) .
3875                      "</td>\n" .
3876                      "<td class=\"link\">" .
3877                      $cgi->a({-href => href(action=>"shortlog", hash=>$ref{'fullname'})}, "shortlog") . " | " .
3878                      $cgi->a({-href => href(action=>"log", hash=>$ref{'fullname'})}, "log") . " | " .
3879                      $cgi->a({-href => href(action=>"tree", hash=>$ref{'fullname'}, hash_base=>$ref{'name'})}, "tree") .
3880                      "</td>\n" .
3881                      "</tr>";
3882        }
3883        if (defined $extra) {
3884                print "<tr>\n" .
3885                      "<td colspan=\"3\">$extra</td>\n" .
3886                      "</tr>\n";
3887        }
3888        print "</table>\n";
3889}
3890
3891sub git_search_grep_body {
3892        my ($commitlist, $from, $to, $extra) = @_;
3893        $from = 0 unless defined $from;
3894        $to = $#{$commitlist} if (!defined $to || $#{$commitlist} < $to);
3895
3896        print "<table class=\"commit_search\">\n";
3897        my $alternate = 1;
3898        for (my $i = $from; $i <= $to; $i++) {
3899                my %co = %{$commitlist->[$i]};
3900                if (!%co) {
3901                        next;
3902                }
3903                my $commit = $co{'id'};
3904                if ($alternate) {
3905                        print "<tr class=\"dark\">\n";
3906                } else {
3907                        print "<tr class=\"light\">\n";
3908                }
3909                $alternate ^= 1;
3910                my $author = chop_and_escape_str($co{'author_name'}, 15, 5);
3911                print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
3912                      "<td><i>" . $author . "</i></td>\n" .
3913                      "<td>" .
3914                      $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}),
3915                               -class => "list subject"},
3916                              chop_and_escape_str($co{'title'}, 50) . "<br/>");
3917                my $comment = $co{'comment'};
3918                foreach my $line (@$comment) {
3919                        if ($line =~ m/^(.*?)($search_regexp)(.*)$/i) {
3920                                my ($lead, $match, $trail) = ($1, $2, $3);
3921                                $match = chop_str($match, 70, 5, 'center');
3922                                my $contextlen = int((80 - length($match))/2);
3923                                $contextlen = 30 if ($contextlen > 30);
3924                                $lead  = chop_str($lead,  $contextlen, 10, 'left');
3925                                $trail = chop_str($trail, $contextlen, 10, 'right');
3926
3927                                $lead  = esc_html($lead);
3928                                $match = esc_html($match);
3929                                $trail = esc_html($trail);
3930
3931                                print "$lead<span class=\"match\">$match</span>$trail<br />";
3932                        }
3933                }
3934                print "</td>\n" .
3935                      "<td class=\"link\">" .
3936                      $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})}, "commit") .
3937                      " | " .
3938                      $cgi->a({-href => href(action=>"commitdiff", hash=>$co{'id'})}, "commitdiff") .
3939                      " | " .
3940                      $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$co{'id'})}, "tree");
3941                print "</td>\n" .
3942                      "</tr>\n";
3943        }
3944        if (defined $extra) {
3945                print "<tr>\n" .
3946                      "<td colspan=\"3\">$extra</td>\n" .
3947                      "</tr>\n";
3948        }
3949        print "</table>\n";
3950}
3951
3952## ======================================================================
3953## ======================================================================
3954## actions
3955
3956sub git_project_list {
3957        my $order = $cgi->param('o');
3958        if (defined $order && $order !~ m/none|project|descr|owner|age/) {
3959                die_error(undef, "Unknown order parameter");
3960        }
3961
3962        my @list = git_get_projects_list();
3963        if (!@list) {
3964                die_error(undef, "No projects found");
3965        }
3966
3967        git_header_html();
3968        if (-f $home_text) {
3969                print "<div class=\"index_include\">\n";
3970                open (my $fd, $home_text);
3971                print <$fd>;
3972                close $fd;
3973                print "</div>\n";
3974        }
3975        git_project_list_body(\@list, $order);
3976        git_footer_html();
3977}
3978
3979sub git_forks {
3980        my $order = $cgi->param('o');
3981        if (defined $order && $order !~ m/none|project|descr|owner|age/) {
3982                die_error(undef, "Unknown order parameter");
3983        }
3984
3985        my @list = git_get_projects_list($project);
3986        if (!@list) {
3987                die_error(undef, "No forks found");
3988        }
3989
3990        git_header_html();
3991        git_print_page_nav('','');
3992        git_print_header_div('summary', "$project forks");
3993        git_project_list_body(\@list, $order);
3994        git_footer_html();
3995}
3996
3997sub git_project_index {
3998        my @projects = git_get_projects_list($project);
3999
4000        print $cgi->header(
4001                -type => 'text/plain',
4002                -charset => 'utf-8',
4003                -content_disposition => 'inline; filename="index.aux"');
4004
4005        foreach my $pr (@projects) {
4006                if (!exists $pr->{'owner'}) {
4007                        $pr->{'owner'} = git_get_project_owner("$pr->{'path'}");
4008                }
4009
4010                my ($path, $owner) = ($pr->{'path'}, $pr->{'owner'});
4011                # quote as in CGI::Util::encode, but keep the slash, and use '+' for ' '
4012                $path  =~ s/([^a-zA-Z0-9_.\-\/ ])/sprintf("%%%02X", ord($1))/eg;
4013                $owner =~ s/([^a-zA-Z0-9_.\-\/ ])/sprintf("%%%02X", ord($1))/eg;
4014                $path  =~ s/ /\+/g;
4015                $owner =~ s/ /\+/g;
4016
4017                print "$path $owner\n";
4018        }
4019}
4020
4021sub git_summary {
4022        my $descr = git_get_project_description($project) || "none";
4023        my %co = parse_commit("HEAD");
4024        my %cd = %co ? parse_date($co{'committer_epoch'}, $co{'committer_tz'}) : ();
4025        my $head = $co{'id'};
4026
4027        my $owner = git_get_project_owner($project);
4028
4029        my $refs = git_get_references();
4030        # These get_*_list functions return one more to allow us to see if
4031        # there are more ...
4032        my @taglist  = git_get_tags_list(16);
4033        my @headlist = git_get_heads_list(16);
4034        my @forklist;
4035        my ($check_forks) = gitweb_check_feature('forks');
4036
4037        if ($check_forks) {
4038                @forklist = git_get_projects_list($project);
4039        }
4040
4041        git_header_html();
4042        git_print_page_nav('summary','', $head);
4043
4044        print "<div class=\"title\">&nbsp;</div>\n";
4045        print "<table class=\"projects_list\">\n" .
4046              "<tr><td>description</td><td>" . esc_html($descr) . "</td></tr>\n" .
4047              "<tr><td>owner</td><td>" . esc_html($owner) . "</td></tr>\n";
4048        if (defined $cd{'rfc2822'}) {
4049                print "<tr><td>last change</td><td>$cd{'rfc2822'}</td></tr>\n";
4050        }
4051
4052        # use per project git URL list in $projectroot/$project/cloneurl
4053        # or make project git URL from git base URL and project name
4054        my $url_tag = "URL";
4055        my @url_list = git_get_project_url_list($project);
4056        @url_list = map { "$_/$project" } @git_base_url_list unless @url_list;
4057        foreach my $git_url (@url_list) {
4058                next unless $git_url;
4059                print "<tr><td>$url_tag</td><td>$git_url</td></tr>\n";
4060                $url_tag = "";
4061        }
4062        print "</table>\n";
4063
4064        if (-s "$projectroot/$project/README.html") {
4065                if (open my $fd, "$projectroot/$project/README.html") {
4066                        print "<div class=\"title\">readme</div>\n" .
4067                              "<div class=\"readme\">\n";
4068                        print $_ while (<$fd>);
4069                        print "\n</div>\n"; # class="readme"
4070                        close $fd;
4071                }
4072        }
4073
4074        # we need to request one more than 16 (0..15) to check if
4075        # those 16 are all
4076        my @commitlist = $head ? parse_commits($head, 17) : ();
4077        if (@commitlist) {
4078                git_print_header_div('shortlog');
4079                git_shortlog_body(\@commitlist, 0, 15, $refs,
4080                                  $#commitlist <=  15 ? undef :
4081                                  $cgi->a({-href => href(action=>"shortlog")}, "..."));
4082        }
4083
4084        if (@taglist) {
4085                git_print_header_div('tags');
4086                git_tags_body(\@taglist, 0, 15,
4087                              $#taglist <=  15 ? undef :
4088                              $cgi->a({-href => href(action=>"tags")}, "..."));
4089        }
4090
4091        if (@headlist) {
4092                git_print_header_div('heads');
4093                git_heads_body(\@headlist, $head, 0, 15,
4094                               $#headlist <= 15 ? undef :
4095                               $cgi->a({-href => href(action=>"heads")}, "..."));
4096        }
4097
4098        if (@forklist) {
4099                git_print_header_div('forks');
4100                git_project_list_body(\@forklist, undef, 0, 15,
4101                                      $#forklist <= 15 ? undef :
4102                                      $cgi->a({-href => href(action=>"forks")}, "..."),
4103                                      'noheader');
4104        }
4105
4106        git_footer_html();
4107}
4108
4109sub git_tag {
4110        my $head = git_get_head_hash($project);
4111        git_header_html();
4112        git_print_page_nav('','', $head,undef,$head);
4113        my %tag = parse_tag($hash);
4114
4115        if (! %tag) {
4116                die_error(undef, "Unknown tag object");
4117        }
4118
4119        git_print_header_div('commit', esc_html($tag{'name'}), $hash);
4120        print "<div class=\"title_text\">\n" .
4121              "<table class=\"object_header\">\n" .
4122              "<tr>\n" .
4123              "<td>object</td>\n" .
4124              "<td>" . $cgi->a({-class => "list", -href => href(action=>$tag{'type'}, hash=>$tag{'object'})},
4125                               $tag{'object'}) . "</td>\n" .
4126              "<td class=\"link\">" . $cgi->a({-href => href(action=>$tag{'type'}, hash=>$tag{'object'})},
4127                                              $tag{'type'}) . "</td>\n" .
4128              "</tr>\n";
4129        if (defined($tag{'author'})) {
4130                my %ad = parse_date($tag{'epoch'}, $tag{'tz'});
4131                print "<tr><td>author</td><td>" . esc_html($tag{'author'}) . "</td></tr>\n";
4132                print "<tr><td></td><td>" . $ad{'rfc2822'} .
4133                        sprintf(" (%02d:%02d %s)", $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'}) .
4134                        "</td></tr>\n";
4135        }
4136        print "</table>\n\n" .
4137              "</div>\n";
4138        print "<div class=\"page_body\">";
4139        my $comment = $tag{'comment'};
4140        foreach my $line (@$comment) {
4141                chomp $line;
4142                print esc_html($line, -nbsp=>1) . "<br/>\n";
4143        }
4144        print "</div>\n";
4145        git_footer_html();
4146}
4147
4148sub git_blame2 {
4149        my $fd;
4150        my $ftype;
4151
4152        my ($have_blame) = gitweb_check_feature('blame');
4153        if (!$have_blame) {
4154                die_error('403 Permission denied', "Permission denied");
4155        }
4156        die_error('404 Not Found', "File name not defined") if (!$file_name);
4157        $hash_base ||= git_get_head_hash($project);
4158        die_error(undef, "Couldn't find base commit") unless ($hash_base);
4159        my %co = parse_commit($hash_base)
4160                or die_error(undef, "Reading commit failed");
4161        if (!defined $hash) {
4162                $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
4163                        or die_error(undef, "Error looking up file");
4164        }
4165        $ftype = git_get_type($hash);
4166        if ($ftype !~ "blob") {
4167                die_error('400 Bad Request', "Object is not a blob");
4168        }
4169        open ($fd, "-|", git_cmd(), "blame", '-p', '--',
4170              $file_name, $hash_base)
4171                or die_error(undef, "Open git-blame failed");
4172        git_header_html();
4173        my $formats_nav =
4174                $cgi->a({-href => href(action=>"blob", -replay=>1)},
4175                        "blob") .
4176                " | " .
4177                $cgi->a({-href => href(action=>"history", -replay=>1)},
4178                        "history") .
4179                " | " .
4180                $cgi->a({-href => href(action=>"blame", file_name=>$file_name)},
4181                        "HEAD");
4182        git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
4183        git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
4184        git_print_page_path($file_name, $ftype, $hash_base);
4185        my @rev_color = (qw(light2 dark2));
4186        my $num_colors = scalar(@rev_color);
4187        my $current_color = 0;
4188        my $last_rev;
4189        print <<HTML;
4190<div class="page_body">
4191<table class="blame">
4192<tr><th>Commit</th><th>Line</th><th>Data</th></tr>
4193HTML
4194        my %metainfo = ();
4195        while (1) {
4196                $_ = <$fd>;
4197                last unless defined $_;
4198                my ($full_rev, $orig_lineno, $lineno, $group_size) =
4199                    /^([0-9a-f]{40}) (\d+) (\d+)(?: (\d+))?$/;
4200                if (!exists $metainfo{$full_rev}) {
4201                        $metainfo{$full_rev} = {};
4202                }
4203                my $meta = $metainfo{$full_rev};
4204                while (<$fd>) {
4205                        last if (s/^\t//);
4206                        if (/^(\S+) (.*)$/) {
4207                                $meta->{$1} = $2;
4208                        }
4209                }
4210                my $data = $_;
4211                chomp $data;
4212                my $rev = substr($full_rev, 0, 8);
4213                my $author = $meta->{'author'};
4214                my %date = parse_date($meta->{'author-time'},
4215                                      $meta->{'author-tz'});
4216                my $date = $date{'iso-tz'};
4217                if ($group_size) {
4218                        $current_color = ++$current_color % $num_colors;
4219                }
4220                print "<tr class=\"$rev_color[$current_color]\">\n";
4221                if ($group_size) {
4222                        print "<td class=\"sha1\"";
4223                        print " title=\"". esc_html($author) . ", $date\"";
4224                        print " rowspan=\"$group_size\"" if ($group_size > 1);
4225                        print ">";
4226                        print $cgi->a({-href => href(action=>"commit",
4227                                                     hash=>$full_rev,
4228                                                     file_name=>$file_name)},
4229                                      esc_html($rev));
4230                        print "</td>\n";
4231                }
4232                open (my $dd, "-|", git_cmd(), "rev-parse", "$full_rev^")
4233                        or die_error(undef, "Open git-rev-parse failed");
4234                my $parent_commit = <$dd>;
4235                close $dd;
4236                chomp($parent_commit);
4237                my $blamed = href(action => 'blame',
4238                                  file_name => $meta->{'filename'},
4239                                  hash_base => $parent_commit);
4240                print "<td class=\"linenr\">";
4241                print $cgi->a({ -href => "$blamed#l$orig_lineno",
4242                                -id => "l$lineno",
4243                                -class => "linenr" },
4244                              esc_html($lineno));
4245                print "</td>";
4246                print "<td class=\"pre\">" . esc_html($data) . "</td>\n";
4247                print "</tr>\n";
4248        }
4249        print "</table>\n";
4250        print "</div>";
4251        close $fd
4252                or print "Reading blob failed\n";
4253        git_footer_html();
4254}
4255
4256sub git_blame {
4257        my $fd;
4258
4259        my ($have_blame) = gitweb_check_feature('blame');
4260        if (!$have_blame) {
4261                die_error('403 Permission denied', "Permission denied");
4262        }
4263        die_error('404 Not Found', "File name not defined") if (!$file_name);
4264        $hash_base ||= git_get_head_hash($project);
4265        die_error(undef, "Couldn't find base commit") unless ($hash_base);
4266        my %co = parse_commit($hash_base)
4267                or die_error(undef, "Reading commit failed");
4268        if (!defined $hash) {
4269                $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
4270                        or die_error(undef, "Error lookup file");
4271        }
4272        open ($fd, "-|", git_cmd(), "annotate", '-l', '-t', '-r', $file_name, $hash_base)
4273                or die_error(undef, "Open git-annotate failed");
4274        git_header_html();
4275        my $formats_nav =
4276                $cgi->a({-href => href(action=>"blob", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
4277                        "blob") .
4278                " | " .
4279                $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
4280                        "history") .
4281                " | " .
4282                $cgi->a({-href => href(action=>"blame", file_name=>$file_name)},
4283                        "HEAD");
4284        git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
4285        git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
4286        git_print_page_path($file_name, 'blob', $hash_base);
4287        print "<div class=\"page_body\">\n";
4288        print <<HTML;
4289<table class="blame">
4290  <tr>
4291    <th>Commit</th>
4292    <th>Age</th>
4293    <th>Author</th>
4294    <th>Line</th>
4295    <th>Data</th>
4296  </tr>
4297HTML
4298        my @line_class = (qw(light dark));
4299        my $line_class_len = scalar (@line_class);
4300        my $line_class_num = $#line_class;
4301        while (my $line = <$fd>) {
4302                my $long_rev;
4303                my $short_rev;
4304                my $author;
4305                my $time;
4306                my $lineno;
4307                my $data;
4308                my $age;
4309                my $age_str;
4310                my $age_class;
4311
4312                chomp $line;
4313                $line_class_num = ($line_class_num + 1) % $line_class_len;
4314
4315                if ($line =~ m/^([0-9a-fA-F]{40})\t\(\s*([^\t]+)\t(\d+) [+-]\d\d\d\d\t(\d+)\)(.*)$/) {
4316                        $long_rev = $1;
4317                        $author   = $2;
4318                        $time     = $3;
4319                        $lineno   = $4;
4320                        $data     = $5;
4321                } else {
4322                        print qq(  <tr><td colspan="5" class="error">Unable to parse: $line</td></tr>\n);
4323                        next;
4324                }
4325                $short_rev  = substr ($long_rev, 0, 8);
4326                $age        = time () - $time;
4327                $age_str    = age_string ($age);
4328                $age_str    =~ s/ /&nbsp;/g;
4329                $age_class  = age_class($age);
4330                $author     = esc_html ($author);
4331                $author     =~ s/ /&nbsp;/g;
4332
4333                $data = untabify($data);
4334                $data = esc_html ($data);
4335
4336                print <<HTML;
4337  <tr class="$line_class[$line_class_num]">
4338    <td class="sha1"><a href="${\href (action=>"commit", hash=>$long_rev)}" class="text">$short_rev..</a></td>
4339    <td class="$age_class">$age_str</td>
4340    <td>$author</td>
4341    <td class="linenr"><a id="$lineno" href="#$lineno" class="linenr">$lineno</a></td>
4342    <td class="pre">$data</td>
4343  </tr>
4344HTML
4345        } # while (my $line = <$fd>)
4346        print "</table>\n\n";
4347        close $fd
4348                or print "Reading blob failed.\n";
4349        print "</div>";
4350        git_footer_html();
4351}
4352
4353sub git_tags {
4354        my $head = git_get_head_hash($project);
4355        git_header_html();
4356        git_print_page_nav('','', $head,undef,$head);
4357        git_print_header_div('summary', $project);
4358
4359        my @tagslist = git_get_tags_list();
4360        if (@tagslist) {
4361                git_tags_body(\@tagslist);
4362        }
4363        git_footer_html();
4364}
4365
4366sub git_heads {
4367        my $head = git_get_head_hash($project);
4368        git_header_html();
4369        git_print_page_nav('','', $head,undef,$head);
4370        git_print_header_div('summary', $project);
4371
4372        my @headslist = git_get_heads_list();
4373        if (@headslist) {
4374                git_heads_body(\@headslist, $head);
4375        }
4376        git_footer_html();
4377}
4378
4379sub git_blob_plain {
4380        my $expires;
4381
4382        if (!defined $hash) {
4383                if (defined $file_name) {
4384                        my $base = $hash_base || git_get_head_hash($project);
4385                        $hash = git_get_hash_by_path($base, $file_name, "blob")
4386                                or die_error(undef, "Error lookup file");
4387                } else {
4388                        die_error(undef, "No file name defined");
4389                }
4390        } elsif ($hash =~ m/^[0-9a-fA-F]{40}$/) {
4391                # blobs defined by non-textual hash id's can be cached
4392                $expires = "+1d";
4393        }
4394
4395        my $type = shift;
4396        open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
4397                or die_error(undef, "Couldn't cat $file_name, $hash");
4398
4399        $type ||= blob_mimetype($fd, $file_name);
4400
4401        # save as filename, even when no $file_name is given
4402        my $save_as = "$hash";
4403        if (defined $file_name) {
4404                $save_as = $file_name;
4405        } elsif ($type =~ m/^text\//) {
4406                $save_as .= '.txt';
4407        }
4408
4409        print $cgi->header(
4410                -type => "$type",
4411                -expires=>$expires,
4412                -content_disposition => 'inline; filename="' . "$save_as" . '"');
4413        undef $/;
4414        binmode STDOUT, ':raw';
4415        print <$fd>;
4416        binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
4417        $/ = "\n";
4418        close $fd;
4419}
4420
4421sub git_blob {
4422        my $expires;
4423
4424        if (!defined $hash) {
4425                if (defined $file_name) {
4426                        my $base = $hash_base || git_get_head_hash($project);
4427                        $hash = git_get_hash_by_path($base, $file_name, "blob")
4428                                or die_error(undef, "Error lookup file");
4429                } else {
4430                        die_error(undef, "No file name defined");
4431                }
4432        } elsif ($hash =~ m/^[0-9a-fA-F]{40}$/) {
4433                # blobs defined by non-textual hash id's can be cached
4434                $expires = "+1d";
4435        }
4436
4437        my ($have_blame) = gitweb_check_feature('blame');
4438        open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
4439                or die_error(undef, "Couldn't cat $file_name, $hash");
4440        my $mimetype = blob_mimetype($fd, $file_name);
4441        if ($mimetype !~ m!^(?:text/|image/(?:gif|png|jpeg)$)! && -B $fd) {
4442                close $fd;
4443                return git_blob_plain($mimetype);
4444        }
4445        # we can have blame only for text/* mimetype
4446        $have_blame &&= ($mimetype =~ m!^text/!);
4447
4448        git_header_html(undef, $expires);
4449        my $formats_nav = '';
4450        if (defined $hash_base && (my %co = parse_commit($hash_base))) {
4451                if (defined $file_name) {
4452                        if ($have_blame) {
4453                                $formats_nav .=
4454                                        $cgi->a({-href => href(action=>"blame", -replay=>1)},
4455                                                "blame") .
4456                                        " | ";
4457                        }
4458                        $formats_nav .=
4459                                $cgi->a({-href => href(action=>"history", -replay=>1)},
4460                                        "history") .
4461                                " | " .
4462                                $cgi->a({-href => href(action=>"blob_plain", -replay=>1)},
4463                                        "raw") .
4464                                " | " .
4465                                $cgi->a({-href => href(action=>"blob",
4466                                                       hash_base=>"HEAD", file_name=>$file_name)},
4467                                        "HEAD");
4468                } else {
4469                        $formats_nav .=
4470                                $cgi->a({-href => href(action=>"blob_plain", -replay=>1)},
4471                                        "raw");
4472                }
4473                git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
4474                git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
4475        } else {
4476                print "<div class=\"page_nav\">\n" .
4477                      "<br/><br/></div>\n" .
4478                      "<div class=\"title\">$hash</div>\n";
4479        }
4480        git_print_page_path($file_name, "blob", $hash_base);
4481        print "<div class=\"page_body\">\n";
4482        if ($mimetype =~ m!^image/!) {
4483                print qq!<img type="$mimetype"!;
4484                if ($file_name) {
4485                        print qq! alt="$file_name" title="$file_name"!;
4486                }
4487                print qq! src="! .
4488                      href(action=>"blob_plain", hash=>$hash,
4489                           hash_base=>$hash_base, file_name=>$file_name) .
4490                      qq!" />\n!;
4491        } else {
4492                my $nr;
4493                while (my $line = <$fd>) {
4494                        chomp $line;
4495                        $nr++;
4496                        $line = untabify($line);
4497                        printf "<div class=\"pre\"><a id=\"l%i\" href=\"#l%i\" class=\"linenr\">%4i</a> %s</div>\n",
4498                               $nr, $nr, $nr, esc_html($line, -nbsp=>1);
4499                }
4500        }
4501        close $fd
4502                or print "Reading blob failed.\n";
4503        print "</div>";
4504        git_footer_html();
4505}
4506
4507sub git_tree {
4508        if (!defined $hash_base) {
4509                $hash_base = "HEAD";
4510        }
4511        if (!defined $hash) {
4512                if (defined $file_name) {
4513                        $hash = git_get_hash_by_path($hash_base, $file_name, "tree");
4514                } else {
4515                        $hash = $hash_base;
4516                }
4517        }
4518        $/ = "\0";
4519        open my $fd, "-|", git_cmd(), "ls-tree", '-z', $hash
4520                or die_error(undef, "Open git-ls-tree failed");
4521        my @entries = map { chomp; $_ } <$fd>;
4522        close $fd or die_error(undef, "Reading tree failed");
4523        $/ = "\n";
4524
4525        my $refs = git_get_references();
4526        my $ref = format_ref_marker($refs, $hash_base);
4527        git_header_html();
4528        my $basedir = '';
4529        my ($have_blame) = gitweb_check_feature('blame');
4530        if (defined $hash_base && (my %co = parse_commit($hash_base))) {
4531                my @views_nav = ();
4532                if (defined $file_name) {
4533                        push @views_nav,
4534                                $cgi->a({-href => href(action=>"history", -replay=>1)},
4535                                        "history"),
4536                                $cgi->a({-href => href(action=>"tree",
4537                                                       hash_base=>"HEAD", file_name=>$file_name)},
4538                                        "HEAD"),
4539                }
4540                my $snapshot_links = format_snapshot_links($hash);
4541                if (defined $snapshot_links) {
4542                        # FIXME: Should be available when we have no hash base as well.
4543                        push @views_nav, $snapshot_links;
4544                }
4545                git_print_page_nav('tree','', $hash_base, undef, undef, join(' | ', @views_nav));
4546                git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash_base);
4547        } else {
4548                undef $hash_base;
4549                print "<div class=\"page_nav\">\n";
4550                print "<br/><br/></div>\n";
4551                print "<div class=\"title\">$hash</div>\n";
4552        }
4553        if (defined $file_name) {
4554                $basedir = $file_name;
4555                if ($basedir ne '' && substr($basedir, -1) ne '/') {
4556                        $basedir .= '/';
4557                }
4558        }
4559        git_print_page_path($file_name, 'tree', $hash_base);
4560        print "<div class=\"page_body\">\n";
4561        print "<table class=\"tree\">\n";
4562        my $alternate = 1;
4563        # '..' (top directory) link if possible
4564        if (defined $hash_base &&
4565            defined $file_name && $file_name =~ m![^/]+$!) {
4566                if ($alternate) {
4567                        print "<tr class=\"dark\">\n";
4568                } else {
4569                        print "<tr class=\"light\">\n";
4570                }
4571                $alternate ^= 1;
4572
4573                my $up = $file_name;
4574                $up =~ s!/?[^/]+$!!;
4575                undef $up unless $up;
4576                # based on git_print_tree_entry
4577                print '<td class="mode">' . mode_str('040000') . "</td>\n";
4578                print '<td class="list">';
4579                print $cgi->a({-href => href(action=>"tree", hash_base=>$hash_base,
4580                                             file_name=>$up)},
4581                              "..");
4582                print "</td>\n";
4583                print "<td class=\"link\"></td>\n";
4584
4585                print "</tr>\n";
4586        }
4587        foreach my $line (@entries) {
4588                my %t = parse_ls_tree_line($line, -z => 1);
4589
4590                if ($alternate) {
4591                        print "<tr class=\"dark\">\n";
4592                } else {
4593                        print "<tr class=\"light\">\n";
4594                }
4595                $alternate ^= 1;
4596
4597                git_print_tree_entry(\%t, $basedir, $hash_base, $have_blame);
4598
4599                print "</tr>\n";
4600        }
4601        print "</table>\n" .
4602              "</div>";
4603        git_footer_html();
4604}
4605
4606sub git_snapshot {
4607        my @supported_fmts = gitweb_check_feature('snapshot');
4608        @supported_fmts = filter_snapshot_fmts(@supported_fmts);
4609
4610        my $format = $cgi->param('sf');
4611        if (!@supported_fmts) {
4612                die_error('403 Permission denied', "Permission denied");
4613        }
4614        # default to first supported snapshot format
4615        $format ||= $supported_fmts[0];
4616        if ($format !~ m/^[a-z0-9]+$/) {
4617                die_error(undef, "Invalid snapshot format parameter");
4618        } elsif (!exists($known_snapshot_formats{$format})) {
4619                die_error(undef, "Unknown snapshot format");
4620        } elsif (!grep($_ eq $format, @supported_fmts)) {
4621                die_error(undef, "Unsupported snapshot format");
4622        }
4623
4624        if (!defined $hash) {
4625                $hash = git_get_head_hash($project);
4626        }
4627
4628        my $git_command = git_cmd_str();
4629        my $name = $project;
4630        $name =~ s,([^/])/*\.git$,$1,;
4631        $name = basename($name);
4632        my $filename = to_utf8($name);
4633        $name =~ s/\047/\047\\\047\047/g;
4634        my $cmd;
4635        $filename .= "-$hash$known_snapshot_formats{$format}{'suffix'}";
4636        $cmd = "$git_command archive " .
4637                "--format=$known_snapshot_formats{$format}{'format'} " .
4638                "--prefix=\'$name\'/ $hash";
4639        if (exists $known_snapshot_formats{$format}{'compressor'}) {
4640                $cmd .= ' | ' . join ' ', @{$known_snapshot_formats{$format}{'compressor'}};
4641        }
4642
4643        print $cgi->header(
4644                -type => $known_snapshot_formats{$format}{'type'},
4645                -content_disposition => 'inline; filename="' . "$filename" . '"',
4646                -status => '200 OK');
4647
4648        open my $fd, "-|", $cmd
4649                or die_error(undef, "Execute git-archive failed");
4650        binmode STDOUT, ':raw';
4651        print <$fd>;
4652        binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
4653        close $fd;
4654}
4655
4656sub git_log {
4657        my $head = git_get_head_hash($project);
4658        if (!defined $hash) {
4659                $hash = $head;
4660        }
4661        if (!defined $page) {
4662                $page = 0;
4663        }
4664        my $refs = git_get_references();
4665
4666        my @commitlist = parse_commits($hash, 101, (100 * $page));
4667
4668        my $paging_nav = format_paging_nav('log', $hash, $head, $page, (100 * ($page+1)));
4669
4670        git_header_html();
4671        git_print_page_nav('log','', $hash,undef,undef, $paging_nav);
4672
4673        if (!@commitlist) {
4674                my %co = parse_commit($hash);
4675
4676                git_print_header_div('summary', $project);
4677                print "<div class=\"page_body\"> Last change $co{'age_string'}.<br/><br/></div>\n";
4678        }
4679        my $to = ($#commitlist >= 99) ? (99) : ($#commitlist);
4680        for (my $i = 0; $i <= $to; $i++) {
4681                my %co = %{$commitlist[$i]};
4682                next if !%co;
4683                my $commit = $co{'id'};
4684                my $ref = format_ref_marker($refs, $commit);
4685                my %ad = parse_date($co{'author_epoch'});
4686                git_print_header_div('commit',
4687                               "<span class=\"age\">$co{'age_string'}</span>" .
4688                               esc_html($co{'title'}) . $ref,
4689                               $commit);
4690                print "<div class=\"title_text\">\n" .
4691                      "<div class=\"log_link\">\n" .
4692                      $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") .
4693                      " | " .
4694                      $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") .
4695                      " | " .
4696                      $cgi->a({-href => href(action=>"tree", hash=>$commit, hash_base=>$commit)}, "tree") .
4697                      "<br/>\n" .
4698                      "</div>\n" .
4699                      "<i>" . esc_html($co{'author_name'}) .  " [$ad{'rfc2822'}]</i><br/>\n" .
4700                      "</div>\n";
4701
4702                print "<div class=\"log_body\">\n";
4703                git_print_log($co{'comment'}, -final_empty_line=> 1);
4704                print "</div>\n";
4705        }
4706        if ($#commitlist >= 100) {
4707                print "<div class=\"page_nav\">\n";
4708                print $cgi->a({-href => href(-replay=>1, page=>$page+1),
4709                               -accesskey => "n", -title => "Alt-n"}, "next");
4710                print "</div>\n";
4711        }
4712        git_footer_html();
4713}
4714
4715sub git_commit {
4716        $hash ||= $hash_base || "HEAD";
4717        my %co = parse_commit($hash);
4718        if (!%co) {
4719                die_error(undef, "Unknown commit object");
4720        }
4721        my %ad = parse_date($co{'author_epoch'}, $co{'author_tz'});
4722        my %cd = parse_date($co{'committer_epoch'}, $co{'committer_tz'});
4723
4724        my $parent  = $co{'parent'};
4725        my $parents = $co{'parents'}; # listref
4726
4727        # we need to prepare $formats_nav before any parameter munging
4728        my $formats_nav;
4729        if (!defined $parent) {
4730                # --root commitdiff
4731                $formats_nav .= '(initial)';
4732        } elsif (@$parents == 1) {
4733                # single parent commit
4734                $formats_nav .=
4735                        '(parent: ' .
4736                        $cgi->a({-href => href(action=>"commit",
4737                                               hash=>$parent)},
4738                                esc_html(substr($parent, 0, 7))) .
4739                        ')';
4740        } else {
4741                # merge commit
4742                $formats_nav .=
4743                        '(merge: ' .
4744                        join(' ', map {
4745                                $cgi->a({-href => href(action=>"commit",
4746                                                       hash=>$_)},
4747                                        esc_html(substr($_, 0, 7)));
4748                        } @$parents ) .
4749                        ')';
4750        }
4751
4752        if (!defined $parent) {
4753                $parent = "--root";
4754        }
4755        my @difftree;
4756        open my $fd, "-|", git_cmd(), "diff-tree", '-r', "--no-commit-id",
4757                @diff_opts,
4758                (@$parents <= 1 ? $parent : '-c'),
4759                $hash, "--"
4760                or die_error(undef, "Open git-diff-tree failed");
4761        @difftree = map { chomp; $_ } <$fd>;
4762        close $fd or die_error(undef, "Reading git-diff-tree failed");
4763
4764        # non-textual hash id's can be cached
4765        my $expires;
4766        if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
4767                $expires = "+1d";
4768        }
4769        my $refs = git_get_references();
4770        my $ref = format_ref_marker($refs, $co{'id'});
4771
4772        git_header_html(undef, $expires);
4773        git_print_page_nav('commit', '',
4774                           $hash, $co{'tree'}, $hash,
4775                           $formats_nav);
4776
4777        if (defined $co{'parent'}) {
4778                git_print_header_div('commitdiff', esc_html($co{'title'}) . $ref, $hash);
4779        } else {
4780                git_print_header_div('tree', esc_html($co{'title'}) . $ref, $co{'tree'}, $hash);
4781        }
4782        print "<div class=\"title_text\">\n" .
4783              "<table class=\"object_header\">\n";
4784        print "<tr><td>author</td><td>" . esc_html($co{'author'}) . "</td></tr>\n".
4785              "<tr>" .
4786              "<td></td><td> $ad{'rfc2822'}";
4787        if ($ad{'hour_local'} < 6) {
4788                printf(" (<span class=\"atnight\">%02d:%02d</span> %s)",
4789                       $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
4790        } else {
4791                printf(" (%02d:%02d %s)",
4792                       $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
4793        }
4794        print "</td>" .
4795              "</tr>\n";
4796        print "<tr><td>committer</td><td>" . esc_html($co{'committer'}) . "</td></tr>\n";
4797        print "<tr><td></td><td> $cd{'rfc2822'}" .
4798              sprintf(" (%02d:%02d %s)", $cd{'hour_local'}, $cd{'minute_local'}, $cd{'tz_local'}) .
4799              "</td></tr>\n";
4800        print "<tr><td>commit</td><td class=\"sha1\">$co{'id'}</td></tr>\n";
4801        print "<tr>" .
4802              "<td>tree</td>" .
4803              "<td class=\"sha1\">" .
4804              $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash),
4805                       class => "list"}, $co{'tree'}) .
4806              "</td>" .
4807              "<td class=\"link\">" .
4808              $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash)},
4809                      "tree");
4810        my $snapshot_links = format_snapshot_links($hash);
4811        if (defined $snapshot_links) {
4812                print " | " . $snapshot_links;
4813        }
4814        print "</td>" .
4815              "</tr>\n";
4816
4817        foreach my $par (@$parents) {
4818                print "<tr>" .
4819                      "<td>parent</td>" .
4820                      "<td class=\"sha1\">" .
4821                      $cgi->a({-href => href(action=>"commit", hash=>$par),
4822                               class => "list"}, $par) .
4823                      "</td>" .
4824                      "<td class=\"link\">" .
4825                      $cgi->a({-href => href(action=>"commit", hash=>$par)}, "commit") .
4826                      " | " .
4827                      $cgi->a({-href => href(action=>"commitdiff", hash=>$hash, hash_parent=>$par)}, "diff") .
4828                      "</td>" .
4829                      "</tr>\n";
4830        }
4831        print "</table>".
4832              "</div>\n";
4833
4834        print "<div class=\"page_body\">\n";
4835        git_print_log($co{'comment'});
4836        print "</div>\n";
4837
4838        git_difftree_body(\@difftree, $hash, @$parents);
4839
4840        git_footer_html();
4841}
4842
4843sub git_object {
4844        # object is defined by:
4845        # - hash or hash_base alone
4846        # - hash_base and file_name
4847        my $type;
4848
4849        # - hash or hash_base alone
4850        if ($hash || ($hash_base && !defined $file_name)) {
4851                my $object_id = $hash || $hash_base;
4852
4853                my $git_command = git_cmd_str();
4854                open my $fd, "-|", "$git_command cat-file -t $object_id 2>/dev/null"
4855                        or die_error('404 Not Found', "Object does not exist");
4856                $type = <$fd>;
4857                chomp $type;
4858                close $fd
4859                        or die_error('404 Not Found', "Object does not exist");
4860
4861        # - hash_base and file_name
4862        } elsif ($hash_base && defined $file_name) {
4863                $file_name =~ s,/+$,,;
4864
4865                system(git_cmd(), "cat-file", '-e', $hash_base) == 0
4866                        or die_error('404 Not Found', "Base object does not exist");
4867
4868                # here errors should not hapen
4869                open my $fd, "-|", git_cmd(), "ls-tree", $hash_base, "--", $file_name
4870                        or die_error(undef, "Open git-ls-tree failed");
4871                my $line = <$fd>;
4872                close $fd;
4873
4874                #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
4875                unless ($line && $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t/) {
4876                        die_error('404 Not Found', "File or directory for given base does not exist");
4877                }
4878                $type = $2;
4879                $hash = $3;
4880        } else {
4881                die_error('404 Not Found', "Not enough information to find object");
4882        }
4883
4884        print $cgi->redirect(-uri => href(action=>$type, -full=>1,
4885                                          hash=>$hash, hash_base=>$hash_base,
4886                                          file_name=>$file_name),
4887                             -status => '302 Found');
4888}
4889
4890sub git_blobdiff {
4891        my $format = shift || 'html';
4892
4893        my $fd;
4894        my @difftree;
4895        my %diffinfo;
4896        my $expires;
4897
4898        # preparing $fd and %diffinfo for git_patchset_body
4899        # new style URI
4900        if (defined $hash_base && defined $hash_parent_base) {
4901                if (defined $file_name) {
4902                        # read raw output
4903                        open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4904                                $hash_parent_base, $hash_base,
4905                                "--", (defined $file_parent ? $file_parent : ()), $file_name
4906                                or die_error(undef, "Open git-diff-tree failed");
4907                        @difftree = map { chomp; $_ } <$fd>;
4908                        close $fd
4909                                or die_error(undef, "Reading git-diff-tree failed");
4910                        @difftree
4911                                or die_error('404 Not Found', "Blob diff not found");
4912
4913                } elsif (defined $hash &&
4914                         $hash =~ /[0-9a-fA-F]{40}/) {
4915                        # try to find filename from $hash
4916
4917                        # read filtered raw output
4918                        open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4919                                $hash_parent_base, $hash_base, "--"
4920                                or die_error(undef, "Open git-diff-tree failed");
4921                        @difftree =
4922                                # ':100644 100644 03b21826... 3b93d5e7... M     ls-files.c'
4923                                # $hash == to_id
4924                                grep { /^:[0-7]{6} [0-7]{6} [0-9a-fA-F]{40} $hash/ }
4925                                map { chomp; $_ } <$fd>;
4926                        close $fd
4927                                or die_error(undef, "Reading git-diff-tree failed");
4928                        @difftree
4929                                or die_error('404 Not Found', "Blob diff not found");
4930
4931                } else {
4932                        die_error('404 Not Found', "Missing one of the blob diff parameters");
4933                }
4934
4935                if (@difftree > 1) {
4936                        die_error('404 Not Found', "Ambiguous blob diff specification");
4937                }
4938
4939                %diffinfo = parse_difftree_raw_line($difftree[0]);
4940                $file_parent ||= $diffinfo{'from_file'} || $file_name;
4941                $file_name   ||= $diffinfo{'to_file'};
4942
4943                $hash_parent ||= $diffinfo{'from_id'};
4944                $hash        ||= $diffinfo{'to_id'};
4945
4946                # non-textual hash id's can be cached
4947                if ($hash_base =~ m/^[0-9a-fA-F]{40}$/ &&
4948                    $hash_parent_base =~ m/^[0-9a-fA-F]{40}$/) {
4949                        $expires = '+1d';
4950                }
4951
4952                # open patch output
4953                open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4954                        '-p', ($format eq 'html' ? "--full-index" : ()),
4955                        $hash_parent_base, $hash_base,
4956                        "--", (defined $file_parent ? $file_parent : ()), $file_name
4957                        or die_error(undef, "Open git-diff-tree failed");
4958        }
4959
4960        # old/legacy style URI
4961        if (!%diffinfo && # if new style URI failed
4962            defined $hash && defined $hash_parent) {
4963                # fake git-diff-tree raw output
4964                $diffinfo{'from_mode'} = $diffinfo{'to_mode'} = "blob";
4965                $diffinfo{'from_id'} = $hash_parent;
4966                $diffinfo{'to_id'}   = $hash;
4967                if (defined $file_name) {
4968                        if (defined $file_parent) {
4969                                $diffinfo{'status'} = '2';
4970                                $diffinfo{'from_file'} = $file_parent;
4971                                $diffinfo{'to_file'}   = $file_name;
4972                        } else { # assume not renamed
4973                                $diffinfo{'status'} = '1';
4974                                $diffinfo{'from_file'} = $file_name;
4975                                $diffinfo{'to_file'}   = $file_name;
4976                        }
4977                } else { # no filename given
4978                        $diffinfo{'status'} = '2';
4979                        $diffinfo{'from_file'} = $hash_parent;
4980                        $diffinfo{'to_file'}   = $hash;
4981                }
4982
4983                # non-textual hash id's can be cached
4984                if ($hash =~ m/^[0-9a-fA-F]{40}$/ &&
4985                    $hash_parent =~ m/^[0-9a-fA-F]{40}$/) {
4986                        $expires = '+1d';
4987                }
4988
4989                # open patch output
4990                open $fd, "-|", git_cmd(), "diff", @diff_opts,
4991                        '-p', ($format eq 'html' ? "--full-index" : ()),
4992                        $hash_parent, $hash, "--"
4993                        or die_error(undef, "Open git-diff failed");
4994        } else  {
4995                die_error('404 Not Found', "Missing one of the blob diff parameters")
4996                        unless %diffinfo;
4997        }
4998
4999        # header
5000        if ($format eq 'html') {
5001                my $formats_nav =
5002                        $cgi->a({-href => href(action=>"blobdiff_plain", -replay=>1)},
5003                                "raw");
5004                git_header_html(undef, $expires);
5005                if (defined $hash_base && (my %co = parse_commit($hash_base))) {
5006                        git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
5007                        git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
5008                } else {
5009                        print "<div class=\"page_nav\"><br/>$formats_nav<br/></div>\n";
5010                        print "<div class=\"title\">$hash vs $hash_parent</div>\n";
5011                }
5012                if (defined $file_name) {
5013                        git_print_page_path($file_name, "blob", $hash_base);
5014                } else {
5015                        print "<div class=\"page_path\"></div>\n";
5016                }
5017
5018        } elsif ($format eq 'plain') {
5019                print $cgi->header(
5020                        -type => 'text/plain',
5021                        -charset => 'utf-8',
5022                        -expires => $expires,
5023                        -content_disposition => 'inline; filename="' . "$file_name" . '.patch"');
5024
5025                print "X-Git-Url: " . $cgi->self_url() . "\n\n";
5026
5027        } else {
5028                die_error(undef, "Unknown blobdiff format");
5029        }
5030
5031        # patch
5032        if ($format eq 'html') {
5033                print "<div class=\"page_body\">\n";
5034
5035                git_patchset_body($fd, [ \%diffinfo ], $hash_base, $hash_parent_base);
5036                close $fd;
5037
5038                print "</div>\n"; # class="page_body"
5039                git_footer_html();
5040
5041        } else {
5042                while (my $line = <$fd>) {
5043                        $line =~ s!a/($hash|$hash_parent)!'a/'.esc_path($diffinfo{'from_file'})!eg;
5044                        $line =~ s!b/($hash|$hash_parent)!'b/'.esc_path($diffinfo{'to_file'})!eg;
5045
5046                        print $line;
5047
5048                        last if $line =~ m!^\+\+\+!;
5049                }
5050                local $/ = undef;
5051                print <$fd>;
5052                close $fd;
5053        }
5054}
5055
5056sub git_blobdiff_plain {
5057        git_blobdiff('plain');
5058}
5059
5060sub git_commitdiff {
5061        my $format = shift || 'html';
5062        $hash ||= $hash_base || "HEAD";
5063        my %co = parse_commit($hash);
5064        if (!%co) {
5065                die_error(undef, "Unknown commit object");
5066        }
5067
5068        # choose format for commitdiff for merge
5069        if (! defined $hash_parent && @{$co{'parents'}} > 1) {
5070                $hash_parent = '--cc';
5071        }
5072        # we need to prepare $formats_nav before almost any parameter munging
5073        my $formats_nav;
5074        if ($format eq 'html') {
5075                $formats_nav =
5076                        $cgi->a({-href => href(action=>"commitdiff_plain", -replay=>1)},
5077                                "raw");
5078
5079                if (defined $hash_parent &&
5080                    $hash_parent ne '-c' && $hash_parent ne '--cc') {
5081                        # commitdiff with two commits given
5082                        my $hash_parent_short = $hash_parent;
5083                        if ($hash_parent =~ m/^[0-9a-fA-F]{40}$/) {
5084                                $hash_parent_short = substr($hash_parent, 0, 7);
5085                        }
5086                        $formats_nav .=
5087                                ' (from';
5088                        for (my $i = 0; $i < @{$co{'parents'}}; $i++) {
5089                                if ($co{'parents'}[$i] eq $hash_parent) {
5090                                        $formats_nav .= ' parent ' . ($i+1);
5091                                        last;
5092                                }
5093                        }
5094                        $formats_nav .= ': ' .
5095                                $cgi->a({-href => href(action=>"commitdiff",
5096                                                       hash=>$hash_parent)},
5097                                        esc_html($hash_parent_short)) .
5098                                ')';
5099                } elsif (!$co{'parent'}) {
5100                        # --root commitdiff
5101                        $formats_nav .= ' (initial)';
5102                } elsif (scalar @{$co{'parents'}} == 1) {
5103                        # single parent commit
5104                        $formats_nav .=
5105                                ' (parent: ' .
5106                                $cgi->a({-href => href(action=>"commitdiff",
5107                                                       hash=>$co{'parent'})},
5108                                        esc_html(substr($co{'parent'}, 0, 7))) .
5109                                ')';
5110                } else {
5111                        # merge commit
5112                        if ($hash_parent eq '--cc') {
5113                                $formats_nav .= ' | ' .
5114                                        $cgi->a({-href => href(action=>"commitdiff",
5115                                                               hash=>$hash, hash_parent=>'-c')},
5116                                                'combined');
5117                        } else { # $hash_parent eq '-c'
5118                                $formats_nav .= ' | ' .
5119                                        $cgi->a({-href => href(action=>"commitdiff",
5120                                                               hash=>$hash, hash_parent=>'--cc')},
5121                                                'compact');
5122                        }
5123                        $formats_nav .=
5124                                ' (merge: ' .
5125                                join(' ', map {
5126                                        $cgi->a({-href => href(action=>"commitdiff",
5127                                                               hash=>$_)},
5128                                                esc_html(substr($_, 0, 7)));
5129                                } @{$co{'parents'}} ) .
5130                                ')';
5131                }
5132        }
5133
5134        my $hash_parent_param = $hash_parent;
5135        if (!defined $hash_parent_param) {
5136                # --cc for multiple parents, --root for parentless
5137                $hash_parent_param =
5138                        @{$co{'parents'}} > 1 ? '--cc' : $co{'parent'} || '--root';
5139        }
5140
5141        # read commitdiff
5142        my $fd;
5143        my @difftree;
5144        if ($format eq 'html') {
5145                open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
5146                        "--no-commit-id", "--patch-with-raw", "--full-index",
5147                        $hash_parent_param, $hash, "--"
5148                        or die_error(undef, "Open git-diff-tree failed");
5149
5150                while (my $line = <$fd>) {
5151                        chomp $line;
5152                        # empty line ends raw part of diff-tree output
5153                        last unless $line;
5154                        push @difftree, scalar parse_difftree_raw_line($line);
5155                }
5156
5157        } elsif ($format eq 'plain') {
5158                open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
5159                        '-p', $hash_parent_param, $hash, "--"
5160                        or die_error(undef, "Open git-diff-tree failed");
5161
5162        } else {
5163                die_error(undef, "Unknown commitdiff format");
5164        }
5165
5166        # non-textual hash id's can be cached
5167        my $expires;
5168        if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
5169                $expires = "+1d";
5170        }
5171
5172        # write commit message
5173        if ($format eq 'html') {
5174                my $refs = git_get_references();
5175                my $ref = format_ref_marker($refs, $co{'id'});
5176
5177                git_header_html(undef, $expires);
5178                git_print_page_nav('commitdiff','', $hash,$co{'tree'},$hash, $formats_nav);
5179                git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash);
5180                git_print_authorship(\%co);
5181                print "<div class=\"page_body\">\n";
5182                if (@{$co{'comment'}} > 1) {
5183                        print "<div class=\"log\">\n";
5184                        git_print_log($co{'comment'}, -final_empty_line=> 1, -remove_title => 1);
5185                        print "</div>\n"; # class="log"
5186                }
5187
5188        } elsif ($format eq 'plain') {
5189                my $refs = git_get_references("tags");
5190                my $tagname = git_get_rev_name_tags($hash);
5191                my $filename = basename($project) . "-$hash.patch";
5192
5193                print $cgi->header(
5194                        -type => 'text/plain',
5195                        -charset => 'utf-8',
5196                        -expires => $expires,
5197                        -content_disposition => 'inline; filename="' . "$filename" . '"');
5198                my %ad = parse_date($co{'author_epoch'}, $co{'author_tz'});
5199                print "From: " . to_utf8($co{'author'}) . "\n";
5200                print "Date: $ad{'rfc2822'} ($ad{'tz_local'})\n";
5201                print "Subject: " . to_utf8($co{'title'}) . "\n";
5202
5203                print "X-Git-Tag: $tagname\n" if $tagname;
5204                print "X-Git-Url: " . $cgi->self_url() . "\n\n";
5205
5206                foreach my $line (@{$co{'comment'}}) {
5207                        print to_utf8($line) . "\n";
5208                }
5209                print "---\n\n";
5210        }
5211
5212        # write patch
5213        if ($format eq 'html') {
5214                my $use_parents = !defined $hash_parent ||
5215                        $hash_parent eq '-c' || $hash_parent eq '--cc';
5216                git_difftree_body(\@difftree, $hash,
5217                                  $use_parents ? @{$co{'parents'}} : $hash_parent);
5218                print "<br/>\n";
5219
5220                git_patchset_body($fd, \@difftree, $hash,
5221                                  $use_parents ? @{$co{'parents'}} : $hash_parent);
5222                close $fd;
5223                print "</div>\n"; # class="page_body"
5224                git_footer_html();
5225
5226        } elsif ($format eq 'plain') {
5227                local $/ = undef;
5228                print <$fd>;
5229                close $fd
5230                        or print "Reading git-diff-tree failed\n";
5231        }
5232}
5233
5234sub git_commitdiff_plain {
5235        git_commitdiff('plain');
5236}
5237
5238sub git_history {
5239        if (!defined $hash_base) {
5240                $hash_base = git_get_head_hash($project);
5241        }
5242        if (!defined $page) {
5243                $page = 0;
5244        }
5245        my $ftype;
5246        my %co = parse_commit($hash_base);
5247        if (!%co) {
5248                die_error(undef, "Unknown commit object");
5249        }
5250
5251        my $refs = git_get_references();
5252        my $limit = sprintf("--max-count=%i", (100 * ($page+1)));
5253
5254        my @commitlist = parse_commits($hash_base, 101, (100 * $page),
5255                                       $file_name, "--full-history");
5256        if (!@commitlist) {
5257                die_error('404 Not Found', "No such file or directory on given branch");
5258        }
5259
5260        if (!defined $hash && defined $file_name) {
5261                # some commits could have deleted file in question,
5262                # and not have it in tree, but one of them has to have it
5263                for (my $i = 0; $i <= @commitlist; $i++) {
5264                        $hash = git_get_hash_by_path($commitlist[$i]{'id'}, $file_name);
5265                        last if defined $hash;
5266                }
5267        }
5268        if (defined $hash) {
5269                $ftype = git_get_type($hash);
5270        }
5271        if (!defined $ftype) {
5272                die_error(undef, "Unknown type of object");
5273        }
5274
5275        my $paging_nav = '';
5276        if ($page > 0) {
5277                $paging_nav .=
5278                        $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
5279                                               file_name=>$file_name)},
5280                                "first");
5281                $paging_nav .= " &sdot; " .
5282                        $cgi->a({-href => href(-replay=>1, page=>$page-1),
5283                                 -accesskey => "p", -title => "Alt-p"}, "prev");
5284        } else {
5285                $paging_nav .= "first";
5286                $paging_nav .= " &sdot; prev";
5287        }
5288        my $next_link = '';
5289        if ($#commitlist >= 100) {
5290                $next_link =
5291                        $cgi->a({-href => href(-replay=>1, page=>$page+1),
5292                                 -accesskey => "n", -title => "Alt-n"}, "next");
5293                $paging_nav .= " &sdot; $next_link";
5294        } else {
5295                $paging_nav .= " &sdot; next";
5296        }
5297
5298        git_header_html();
5299        git_print_page_nav('history','', $hash_base,$co{'tree'},$hash_base, $paging_nav);
5300        git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
5301        git_print_page_path($file_name, $ftype, $hash_base);
5302
5303        git_history_body(\@commitlist, 0, 99,
5304                         $refs, $hash_base, $ftype, $next_link);
5305
5306        git_footer_html();
5307}
5308
5309sub git_search {
5310        my ($have_search) = gitweb_check_feature('search');
5311        if (!$have_search) {
5312                die_error('403 Permission denied', "Permission denied");
5313        }
5314        if (!defined $searchtext) {
5315                die_error(undef, "Text field empty");
5316        }
5317        if (!defined $hash) {
5318                $hash = git_get_head_hash($project);
5319        }
5320        my %co = parse_commit($hash);
5321        if (!%co) {
5322                die_error(undef, "Unknown commit object");
5323        }
5324        if (!defined $page) {
5325                $page = 0;
5326        }
5327
5328        $searchtype ||= 'commit';
5329        if ($searchtype eq 'pickaxe') {
5330                # pickaxe may take all resources of your box and run for several minutes
5331                # with every query - so decide by yourself how public you make this feature
5332                my ($have_pickaxe) = gitweb_check_feature('pickaxe');
5333                if (!$have_pickaxe) {
5334                        die_error('403 Permission denied', "Permission denied");
5335                }
5336        }
5337        if ($searchtype eq 'grep') {
5338                my ($have_grep) = gitweb_check_feature('grep');
5339                if (!$have_grep) {
5340                        die_error('403 Permission denied', "Permission denied");
5341                }
5342        }
5343
5344        git_header_html();
5345
5346        if ($searchtype eq 'commit' or $searchtype eq 'author' or $searchtype eq 'committer') {
5347                my $greptype;
5348                if ($searchtype eq 'commit') {
5349                        $greptype = "--grep=";
5350                } elsif ($searchtype eq 'author') {
5351                        $greptype = "--author=";
5352                } elsif ($searchtype eq 'committer') {
5353                        $greptype = "--committer=";
5354                }
5355                $greptype .= $searchtext;
5356                my @commitlist = parse_commits($hash, 101, (100 * $page), undef,
5357                                               $greptype, '--regexp-ignore-case',
5358                                               $search_use_regexp ? '--extended-regexp' : '--fixed-strings');
5359
5360                my $paging_nav = '';
5361                if ($page > 0) {
5362                        $paging_nav .=
5363                                $cgi->a({-href => href(action=>"search", hash=>$hash,
5364                                                       searchtext=>$searchtext,
5365                                                       searchtype=>$searchtype)},
5366                                        "first");
5367                        $paging_nav .= " &sdot; " .
5368                                $cgi->a({-href => href(-replay=>1, page=>$page-1),
5369                                         -accesskey => "p", -title => "Alt-p"}, "prev");
5370                } else {
5371                        $paging_nav .= "first";
5372                        $paging_nav .= " &sdot; prev";
5373                }
5374                my $next_link = '';
5375                if ($#commitlist >= 100) {
5376                        $next_link =
5377                                $cgi->a({-href => href(-replay=>1, page=>$page+1),
5378                                         -accesskey => "n", -title => "Alt-n"}, "next");
5379                        $paging_nav .= " &sdot; $next_link";
5380                } else {
5381                        $paging_nav .= " &sdot; next";
5382                }
5383
5384                if ($#commitlist >= 100) {
5385                }
5386
5387                git_print_page_nav('','', $hash,$co{'tree'},$hash, $paging_nav);
5388                git_print_header_div('commit', esc_html($co{'title'}), $hash);
5389                git_search_grep_body(\@commitlist, 0, 99, $next_link);
5390        }
5391
5392        if ($searchtype eq 'pickaxe') {
5393                git_print_page_nav('','', $hash,$co{'tree'},$hash);
5394                git_print_header_div('commit', esc_html($co{'title'}), $hash);
5395
5396                print "<table class=\"pickaxe search\">\n";
5397                my $alternate = 1;
5398                $/ = "\n";
5399                open my $fd, '-|', git_cmd(), '--no-pager', 'log', @diff_opts,
5400                        '--pretty=format:%H', '--no-abbrev', '--raw', "-S$searchtext",
5401                        ($search_use_regexp ? '--pickaxe-regex' : ());
5402                undef %co;
5403                my @files;
5404                while (my $line = <$fd>) {
5405                        chomp $line;
5406                        next unless $line;
5407
5408                        my %set = parse_difftree_raw_line($line);
5409                        if (defined $set{'commit'}) {
5410                                # finish previous commit
5411                                if (%co) {
5412                                        print "</td>\n" .
5413                                              "<td class=\"link\">" .
5414                                              $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})}, "commit") .
5415                                              " | " .
5416                                              $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$co{'id'})}, "tree");
5417                                        print "</td>\n" .
5418                                              "</tr>\n";
5419                                }
5420
5421                                if ($alternate) {
5422                                        print "<tr class=\"dark\">\n";
5423                                } else {
5424                                        print "<tr class=\"light\">\n";
5425                                }
5426                                $alternate ^= 1;
5427                                %co = parse_commit($set{'commit'});
5428                                my $author = chop_and_escape_str($co{'author_name'}, 15, 5);
5429                                print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
5430                                      "<td><i>$author</i></td>\n" .
5431                                      "<td>" .
5432                                      $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}),
5433                                              -class => "list subject"},
5434                                              chop_and_escape_str($co{'title'}, 50) . "<br/>");
5435                        } elsif (defined $set{'to_id'}) {
5436                                next if ($set{'to_id'} =~ m/^0{40}$/);
5437
5438                                print $cgi->a({-href => href(action=>"blob", hash_base=>$co{'id'},
5439                                                             hash=>$set{'to_id'}, file_name=>$set{'to_file'}),
5440                                              -class => "list"},
5441                                              "<span class=\"match\">" . esc_path($set{'file'}) . "</span>") .
5442                                      "<br/>\n";
5443                        }
5444                }
5445                close $fd;
5446
5447                # finish last commit (warning: repetition!)
5448                if (%co) {
5449                        print "</td>\n" .
5450                              "<td class=\"link\">" .
5451                              $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})}, "commit") .
5452                              " | " .
5453                              $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$co{'id'})}, "tree");
5454                        print "</td>\n" .
5455                              "</tr>\n";
5456                }
5457
5458                print "</table>\n";
5459        }
5460
5461        if ($searchtype eq 'grep') {
5462                git_print_page_nav('','', $hash,$co{'tree'},$hash);
5463                git_print_header_div('commit', esc_html($co{'title'}), $hash);
5464
5465                print "<table class=\"grep_search\">\n";
5466                my $alternate = 1;
5467                my $matches = 0;
5468                $/ = "\n";
5469                open my $fd, "-|", git_cmd(), 'grep', '-n',
5470                        $search_use_regexp ? ('-E', '-i') : '-F',
5471                        $searchtext, $co{'tree'};
5472                my $lastfile = '';
5473                while (my $line = <$fd>) {
5474                        chomp $line;
5475                        my ($file, $lno, $ltext, $binary);
5476                        last if ($matches++ > 1000);
5477                        if ($line =~ /^Binary file (.+) matches$/) {
5478                                $file = $1;
5479                                $binary = 1;
5480                        } else {
5481                                (undef, $file, $lno, $ltext) = split(/:/, $line, 4);
5482                        }
5483                        if ($file ne $lastfile) {
5484                                $lastfile and print "</td></tr>\n";
5485                                if ($alternate++) {
5486                                        print "<tr class=\"dark\">\n";
5487                                } else {
5488                                        print "<tr class=\"light\">\n";
5489                                }
5490                                print "<td class=\"list\">".
5491                                        $cgi->a({-href => href(action=>"blob", hash=>$co{'hash'},
5492                                                               file_name=>"$file"),
5493                                                -class => "list"}, esc_path($file));
5494                                print "</td><td>\n";
5495                                $lastfile = $file;
5496                        }
5497                        if ($binary) {
5498                                print "<div class=\"binary\">Binary file</div>\n";
5499                        } else {
5500                                $ltext = untabify($ltext);
5501                                if ($ltext =~ m/^(.*)($search_regexp)(.*)$/i) {
5502                                        $ltext = esc_html($1, -nbsp=>1);
5503                                        $ltext .= '<span class="match">';
5504                                        $ltext .= esc_html($2, -nbsp=>1);
5505                                        $ltext .= '</span>';
5506                                        $ltext .= esc_html($3, -nbsp=>1);
5507                                } else {
5508                                        $ltext = esc_html($ltext, -nbsp=>1);
5509                                }
5510                                print "<div class=\"pre\">" .
5511                                        $cgi->a({-href => href(action=>"blob", hash=>$co{'hash'},
5512                                                               file_name=>"$file").'#l'.$lno,
5513                                                -class => "linenr"}, sprintf('%4i', $lno))
5514                                        . ' ' .  $ltext . "</div>\n";
5515                        }
5516                }
5517                if ($lastfile) {
5518                        print "</td></tr>\n";
5519                        if ($matches > 1000) {
5520                                print "<div class=\"diff nodifferences\">Too many matches, listing trimmed</div>\n";
5521                        }
5522                } else {
5523                        print "<div class=\"diff nodifferences\">No matches found</div>\n";
5524                }
5525                close $fd;
5526
5527                print "</table>\n";
5528        }
5529        git_footer_html();
5530}
5531
5532sub git_search_help {
5533        git_header_html();
5534        git_print_page_nav('','', $hash,$hash,$hash);
5535        print <<EOT;
5536<p><strong>Pattern</strong> is by default a normal string that is matched precisely (but without
5537regard to case, except in the case of pickaxe). However, when you check the <em>re</em> checkbox,
5538the pattern entered is recognized as the POSIX extended
5539<a href="http://en.wikipedia.org/wiki/Regular_expression">regular expression</a> (also case
5540insensitive).</p>
5541<dl>
5542<dt><b>commit</b></dt>
5543<dd>The commit messages and authorship information will be scanned for the given pattern.</dd>
5544EOT
5545        my ($have_grep) = gitweb_check_feature('grep');
5546        if ($have_grep) {
5547                print <<EOT;
5548<dt><b>grep</b></dt>
5549<dd>All files in the currently selected tree (HEAD unless you are explicitly browsing
5550    a different one) are searched for the given pattern. On large trees, this search can take
5551a while and put some strain on the server, so please use it with some consideration. Note that
5552due to git-grep peculiarity, currently if regexp mode is turned off, the matches are
5553case-sensitive.</dd>
5554EOT
5555        }
5556        print <<EOT;
5557<dt><b>author</b></dt>
5558<dd>Name and e-mail of the change author and date of birth of the patch will be scanned for the given pattern.</dd>
5559<dt><b>committer</b></dt>
5560<dd>Name and e-mail of the committer and date of commit will be scanned for the given pattern.</dd>
5561EOT
5562        my ($have_pickaxe) = gitweb_check_feature('pickaxe');
5563        if ($have_pickaxe) {
5564                print <<EOT;
5565<dt><b>pickaxe</b></dt>
5566<dd>All commits that caused the string to appear or disappear from any file (changes that
5567added, removed or "modified" the string) will be listed. This search can take a while and
5568takes a lot of strain on the server, so please use it wisely. Note that since you may be
5569interested even in changes just changing the case as well, this search is case sensitive.</dd>
5570EOT
5571        }
5572        print "</dl>\n";
5573        git_footer_html();
5574}
5575
5576sub git_shortlog {
5577        my $head = git_get_head_hash($project);
5578        if (!defined $hash) {
5579                $hash = $head;
5580        }
5581        if (!defined $page) {
5582                $page = 0;
5583        }
5584        my $refs = git_get_references();
5585
5586        my @commitlist = parse_commits($hash, 101, (100 * $page));
5587
5588        my $paging_nav = format_paging_nav('shortlog', $hash, $head, $page, (100 * ($page+1)));
5589        my $next_link = '';
5590        if ($#commitlist >= 100) {
5591                $next_link =
5592                        $cgi->a({-href => href(-replay=>1, page=>$page+1),
5593                                 -accesskey => "n", -title => "Alt-n"}, "next");
5594        }
5595
5596        git_header_html();
5597        git_print_page_nav('shortlog','', $hash,$hash,$hash, $paging_nav);
5598        git_print_header_div('summary', $project);
5599
5600        git_shortlog_body(\@commitlist, 0, 99, $refs, $next_link);
5601
5602        git_footer_html();
5603}
5604
5605## ......................................................................
5606## feeds (RSS, Atom; OPML)
5607
5608sub git_feed {
5609        my $format = shift || 'atom';
5610        my ($have_blame) = gitweb_check_feature('blame');
5611
5612        # Atom: http://www.atomenabled.org/developers/syndication/
5613        # RSS:  http://www.notestips.com/80256B3A007F2692/1/NAMO5P9UPQ
5614        if ($format ne 'rss' && $format ne 'atom') {
5615                die_error(undef, "Unknown web feed format");
5616        }
5617
5618        # log/feed of current (HEAD) branch, log of given branch, history of file/directory
5619        my $head = $hash || 'HEAD';
5620        my @commitlist = parse_commits($head, 150, 0, $file_name);
5621
5622        my %latest_commit;
5623        my %latest_date;
5624        my $content_type = "application/$format+xml";
5625        if (defined $cgi->http('HTTP_ACCEPT') &&
5626                 $cgi->Accept('text/xml') > $cgi->Accept($content_type)) {
5627                # browser (feed reader) prefers text/xml
5628                $content_type = 'text/xml';
5629        }
5630        if (defined($commitlist[0])) {
5631                %latest_commit = %{$commitlist[0]};
5632                %latest_date   = parse_date($latest_commit{'author_epoch'});
5633                print $cgi->header(
5634                        -type => $content_type,
5635                        -charset => 'utf-8',
5636                        -last_modified => $latest_date{'rfc2822'});
5637        } else {
5638                print $cgi->header(
5639                        -type => $content_type,
5640                        -charset => 'utf-8');
5641        }
5642
5643        # Optimization: skip generating the body if client asks only
5644        # for Last-Modified date.
5645        return if ($cgi->request_method() eq 'HEAD');
5646
5647        # header variables
5648        my $title = "$site_name - $project/$action";
5649        my $feed_type = 'log';
5650        if (defined $hash) {
5651                $title .= " - '$hash'";
5652                $feed_type = 'branch log';
5653                if (defined $file_name) {
5654                        $title .= " :: $file_name";
5655                        $feed_type = 'history';
5656                }
5657        } elsif (defined $file_name) {
5658                $title .= " - $file_name";
5659                $feed_type = 'history';
5660        }
5661        $title .= " $feed_type";
5662        my $descr = git_get_project_description($project);
5663        if (defined $descr) {
5664                $descr = esc_html($descr);
5665        } else {
5666                $descr = "$project " .
5667                         ($format eq 'rss' ? 'RSS' : 'Atom') .
5668                         " feed";
5669        }
5670        my $owner = git_get_project_owner($project);
5671        $owner = esc_html($owner);
5672
5673        #header
5674        my $alt_url;
5675        if (defined $file_name) {
5676                $alt_url = href(-full=>1, action=>"history", hash=>$hash, file_name=>$file_name);
5677        } elsif (defined $hash) {
5678                $alt_url = href(-full=>1, action=>"log", hash=>$hash);
5679        } else {
5680                $alt_url = href(-full=>1, action=>"summary");
5681        }
5682        print qq!<?xml version="1.0" encoding="utf-8"?>\n!;
5683        if ($format eq 'rss') {
5684                print <<XML;
5685<rss version="2.0" xmlns:content="http://purl.org/rss/1.0/modules/content/">
5686<channel>
5687XML
5688                print "<title>$title</title>\n" .
5689                      "<link>$alt_url</link>\n" .
5690                      "<description>$descr</description>\n" .
5691                      "<language>en</language>\n";
5692        } elsif ($format eq 'atom') {
5693                print <<XML;
5694<feed xmlns="http://www.w3.org/2005/Atom">
5695XML
5696                print "<title>$title</title>\n" .
5697                      "<subtitle>$descr</subtitle>\n" .
5698                      '<link rel="alternate" type="text/html" href="' .
5699                      $alt_url . '" />' . "\n" .
5700                      '<link rel="self" type="' . $content_type . '" href="' .
5701                      $cgi->self_url() . '" />' . "\n" .
5702                      "<id>" . href(-full=>1) . "</id>\n" .
5703                      # use project owner for feed author
5704                      "<author><name>$owner</name></author>\n";
5705                if (defined $favicon) {
5706                        print "<icon>" . esc_url($favicon) . "</icon>\n";
5707                }
5708                if (defined $logo_url) {
5709                        # not twice as wide as tall: 72 x 27 pixels
5710                        print "<logo>" . esc_url($logo) . "</logo>\n";
5711                }
5712                if (! %latest_date) {
5713                        # dummy date to keep the feed valid until commits trickle in:
5714                        print "<updated>1970-01-01T00:00:00Z</updated>\n";
5715                } else {
5716                        print "<updated>$latest_date{'iso-8601'}</updated>\n";
5717                }
5718        }
5719
5720        # contents
5721        for (my $i = 0; $i <= $#commitlist; $i++) {
5722                my %co = %{$commitlist[$i]};
5723                my $commit = $co{'id'};
5724                # we read 150, we always show 30 and the ones more recent than 48 hours
5725                if (($i >= 20) && ((time - $co{'author_epoch'}) > 48*60*60)) {
5726                        last;
5727                }
5728                my %cd = parse_date($co{'author_epoch'});
5729
5730                # get list of changed files
5731                open my $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
5732                        $co{'parent'} || "--root",
5733                        $co{'id'}, "--", (defined $file_name ? $file_name : ())
5734                        or next;
5735                my @difftree = map { chomp; $_ } <$fd>;
5736                close $fd
5737                        or next;
5738
5739                # print element (entry, item)
5740                my $co_url = href(-full=>1, action=>"commitdiff", hash=>$commit);
5741                if ($format eq 'rss') {
5742                        print "<item>\n" .
5743                              "<title>" . esc_html($co{'title'}) . "</title>\n" .
5744                              "<author>" . esc_html($co{'author'}) . "</author>\n" .
5745                              "<pubDate>$cd{'rfc2822'}</pubDate>\n" .
5746                              "<guid isPermaLink=\"true\">$co_url</guid>\n" .
5747                              "<link>$co_url</link>\n" .
5748                              "<description>" . esc_html($co{'title'}) . "</description>\n" .
5749                              "<content:encoded>" .
5750                              "<![CDATA[\n";
5751                } elsif ($format eq 'atom') {
5752                        print "<entry>\n" .
5753                              "<title type=\"html\">" . esc_html($co{'title'}) . "</title>\n" .
5754                              "<updated>$cd{'iso-8601'}</updated>\n" .
5755                              "<author>\n" .
5756                              "  <name>" . esc_html($co{'author_name'}) . "</name>\n";
5757                        if ($co{'author_email'}) {
5758                                print "  <email>" . esc_html($co{'author_email'}) . "</email>\n";
5759                        }
5760                        print "</author>\n" .
5761                              # use committer for contributor
5762                              "<contributor>\n" .
5763                              "  <name>" . esc_html($co{'committer_name'}) . "</name>\n";
5764                        if ($co{'committer_email'}) {
5765                                print "  <email>" . esc_html($co{'committer_email'}) . "</email>\n";
5766                        }
5767                        print "</contributor>\n" .
5768                              "<published>$cd{'iso-8601'}</published>\n" .
5769                              "<link rel=\"alternate\" type=\"text/html\" href=\"$co_url\" />\n" .
5770                              "<id>$co_url</id>\n" .
5771                              "<content type=\"xhtml\" xml:base=\"" . esc_url($my_url) . "\">\n" .
5772                              "<div xmlns=\"http://www.w3.org/1999/xhtml\">\n";
5773                }
5774                my $comment = $co{'comment'};
5775                print "<pre>\n";
5776                foreach my $line (@$comment) {
5777                        $line = esc_html($line);
5778                        print "$line\n";
5779                }
5780                print "</pre><ul>\n";
5781                foreach my $difftree_line (@difftree) {
5782                        my %difftree = parse_difftree_raw_line($difftree_line);
5783                        next if !$difftree{'from_id'};
5784
5785                        my $file = $difftree{'file'} || $difftree{'to_file'};
5786
5787                        print "<li>" .
5788                              "[" .
5789                              $cgi->a({-href => href(-full=>1, action=>"blobdiff",
5790                                                     hash=>$difftree{'to_id'}, hash_parent=>$difftree{'from_id'},
5791                                                     hash_base=>$co{'id'}, hash_parent_base=>$co{'parent'},
5792                                                     file_name=>$file, file_parent=>$difftree{'from_file'}),
5793                                      -title => "diff"}, 'D');
5794                        if ($have_blame) {
5795                                print $cgi->a({-href => href(-full=>1, action=>"blame",
5796                                                             file_name=>$file, hash_base=>$commit),
5797                                              -title => "blame"}, 'B');
5798                        }
5799                        # if this is not a feed of a file history
5800                        if (!defined $file_name || $file_name ne $file) {
5801                                print $cgi->a({-href => href(-full=>1, action=>"history",
5802                                                             file_name=>$file, hash=>$commit),
5803                                              -title => "history"}, 'H');
5804                        }
5805                        $file = esc_path($file);
5806                        print "] ".
5807                              "$file</li>\n";
5808                }
5809                if ($format eq 'rss') {
5810                        print "</ul>]]>\n" .
5811                              "</content:encoded>\n" .
5812                              "</item>\n";
5813                } elsif ($format eq 'atom') {
5814                        print "</ul>\n</div>\n" .
5815                              "</content>\n" .
5816                              "</entry>\n";
5817                }
5818        }
5819
5820        # end of feed
5821        if ($format eq 'rss') {
5822                print "</channel>\n</rss>\n";
5823        }       elsif ($format eq 'atom') {
5824                print "</feed>\n";
5825        }
5826}
5827
5828sub git_rss {
5829        git_feed('rss');
5830}
5831
5832sub git_atom {
5833        git_feed('atom');
5834}
5835
5836sub git_opml {
5837        my @list = git_get_projects_list();
5838
5839        print $cgi->header(-type => 'text/xml', -charset => 'utf-8');
5840        print <<XML;
5841<?xml version="1.0" encoding="utf-8"?>
5842<opml version="1.0">
5843<head>
5844  <title>$site_name OPML Export</title>
5845</head>
5846<body>
5847<outline text="git RSS feeds">
5848XML
5849
5850        foreach my $pr (@list) {
5851                my %proj = %$pr;
5852                my $head = git_get_head_hash($proj{'path'});
5853                if (!defined $head) {
5854                        next;
5855                }
5856                $git_dir = "$projectroot/$proj{'path'}";
5857                my %co = parse_commit($head);
5858                if (!%co) {
5859                        next;
5860                }
5861
5862                my $path = esc_html(chop_str($proj{'path'}, 25, 5));
5863                my $rss  = "$my_url?p=$proj{'path'};a=rss";
5864                my $html = "$my_url?p=$proj{'path'};a=summary";
5865                print "<outline type=\"rss\" text=\"$path\" title=\"$path\" xmlUrl=\"$rss\" htmlUrl=\"$html\"/>\n";
5866        }
5867        print <<XML;
5868</outline>
5869</body>
5870</opml>
5871XML
5872}