gitweb / gitweb.perlon commit gitweb: Use href(-replay=>1, action=>...) to generate alternate views (a3823e5)
   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++";
 372do $GITWEB_CONFIG if -e $GITWEB_CONFIG;
 373
 374# version of the core git binary
 375our $git_version = qx($GIT --version) =~ m/git version (.*)$/ ? $1 : "unknown";
 376
 377$projects_list ||= $projectroot;
 378
 379# ======================================================================
 380# input validation and dispatch
 381our $action = $cgi->param('a');
 382if (defined $action) {
 383        if ($action =~ m/[^0-9a-zA-Z\.\-_]/) {
 384                die_error(undef, "Invalid action parameter");
 385        }
 386}
 387
 388# parameters which are pathnames
 389our $project = $cgi->param('p');
 390if (defined $project) {
 391        if (!validate_pathname($project) ||
 392            !(-d "$projectroot/$project") ||
 393            !check_head_link("$projectroot/$project") ||
 394            ($export_ok && !(-e "$projectroot/$project/$export_ok")) ||
 395            ($strict_export && !project_in_list($project))) {
 396                undef $project;
 397                die_error(undef, "No such project");
 398        }
 399}
 400
 401our $file_name = $cgi->param('f');
 402if (defined $file_name) {
 403        if (!validate_pathname($file_name)) {
 404                die_error(undef, "Invalid file parameter");
 405        }
 406}
 407
 408our $file_parent = $cgi->param('fp');
 409if (defined $file_parent) {
 410        if (!validate_pathname($file_parent)) {
 411                die_error(undef, "Invalid file parent parameter");
 412        }
 413}
 414
 415# parameters which are refnames
 416our $hash = $cgi->param('h');
 417if (defined $hash) {
 418        if (!validate_refname($hash)) {
 419                die_error(undef, "Invalid hash parameter");
 420        }
 421}
 422
 423our $hash_parent = $cgi->param('hp');
 424if (defined $hash_parent) {
 425        if (!validate_refname($hash_parent)) {
 426                die_error(undef, "Invalid hash parent parameter");
 427        }
 428}
 429
 430our $hash_base = $cgi->param('hb');
 431if (defined $hash_base) {
 432        if (!validate_refname($hash_base)) {
 433                die_error(undef, "Invalid hash base parameter");
 434        }
 435}
 436
 437my %allowed_options = (
 438        "--no-merges" => [ qw(rss atom log shortlog history) ],
 439);
 440
 441our @extra_options = $cgi->param('opt');
 442if (defined @extra_options) {
 443        foreach my $opt (@extra_options) {
 444                if (not exists $allowed_options{$opt}) {
 445                        die_error(undef, "Invalid option parameter");
 446                }
 447                if (not grep(/^$action$/, @{$allowed_options{$opt}})) {
 448                        die_error(undef, "Invalid option parameter for this action");
 449                }
 450        }
 451}
 452
 453our $hash_parent_base = $cgi->param('hpb');
 454if (defined $hash_parent_base) {
 455        if (!validate_refname($hash_parent_base)) {
 456                die_error(undef, "Invalid hash parent base parameter");
 457        }
 458}
 459
 460# other parameters
 461our $page = $cgi->param('pg');
 462if (defined $page) {
 463        if ($page =~ m/[^0-9]/) {
 464                die_error(undef, "Invalid page parameter");
 465        }
 466}
 467
 468our $searchtype = $cgi->param('st');
 469if (defined $searchtype) {
 470        if ($searchtype =~ m/[^a-z]/) {
 471                die_error(undef, "Invalid searchtype parameter");
 472        }
 473}
 474
 475our $searchtext = $cgi->param('s');
 476our $search_regexp;
 477if (defined $searchtext) {
 478        if (length($searchtext) < 2) {
 479                die_error(undef, "At least two characters are required for search parameter");
 480        }
 481        $search_regexp = quotemeta $searchtext;
 482}
 483
 484# now read PATH_INFO and use it as alternative to parameters
 485sub evaluate_path_info {
 486        return if defined $project;
 487        my $path_info = $ENV{"PATH_INFO"};
 488        return if !$path_info;
 489        $path_info =~ s,^/+,,;
 490        return if !$path_info;
 491        # find which part of PATH_INFO is project
 492        $project = $path_info;
 493        $project =~ s,/+$,,;
 494        while ($project && !check_head_link("$projectroot/$project")) {
 495                $project =~ s,/*[^/]*$,,;
 496        }
 497        # validate project
 498        $project = validate_pathname($project);
 499        if (!$project ||
 500            ($export_ok && !-e "$projectroot/$project/$export_ok") ||
 501            ($strict_export && !project_in_list($project))) {
 502                undef $project;
 503                return;
 504        }
 505        # do not change any parameters if an action is given using the query string
 506        return if $action;
 507        $path_info =~ s,^$project/*,,;
 508        my ($refname, $pathname) = split(/:/, $path_info, 2);
 509        if (defined $pathname) {
 510                # we got "project.git/branch:filename" or "project.git/branch:dir/"
 511                # we could use git_get_type(branch:pathname), but it needs $git_dir
 512                $pathname =~ s,^/+,,;
 513                if (!$pathname || substr($pathname, -1) eq "/") {
 514                        $action  ||= "tree";
 515                        $pathname =~ s,/$,,;
 516                } else {
 517                        $action  ||= "blob_plain";
 518                }
 519                $hash_base ||= validate_refname($refname);
 520                $file_name ||= validate_pathname($pathname);
 521        } elsif (defined $refname) {
 522                # we got "project.git/branch"
 523                $action ||= "shortlog";
 524                $hash   ||= validate_refname($refname);
 525        }
 526}
 527evaluate_path_info();
 528
 529# path to the current git repository
 530our $git_dir;
 531$git_dir = "$projectroot/$project" if $project;
 532
 533# dispatch
 534my %actions = (
 535        "blame" => \&git_blame2,
 536        "blobdiff" => \&git_blobdiff,
 537        "blobdiff_plain" => \&git_blobdiff_plain,
 538        "blob" => \&git_blob,
 539        "blob_plain" => \&git_blob_plain,
 540        "commitdiff" => \&git_commitdiff,
 541        "commitdiff_plain" => \&git_commitdiff_plain,
 542        "commit" => \&git_commit,
 543        "forks" => \&git_forks,
 544        "heads" => \&git_heads,
 545        "history" => \&git_history,
 546        "log" => \&git_log,
 547        "rss" => \&git_rss,
 548        "atom" => \&git_atom,
 549        "search" => \&git_search,
 550        "search_help" => \&git_search_help,
 551        "shortlog" => \&git_shortlog,
 552        "summary" => \&git_summary,
 553        "tag" => \&git_tag,
 554        "tags" => \&git_tags,
 555        "tree" => \&git_tree,
 556        "snapshot" => \&git_snapshot,
 557        "object" => \&git_object,
 558        # those below don't need $project
 559        "opml" => \&git_opml,
 560        "project_list" => \&git_project_list,
 561        "project_index" => \&git_project_index,
 562);
 563
 564if (!defined $action) {
 565        if (defined $hash) {
 566                $action = git_get_type($hash);
 567        } elsif (defined $hash_base && defined $file_name) {
 568                $action = git_get_type("$hash_base:$file_name");
 569        } elsif (defined $project) {
 570                $action = 'summary';
 571        } else {
 572                $action = 'project_list';
 573        }
 574}
 575if (!defined($actions{$action})) {
 576        die_error(undef, "Unknown action");
 577}
 578if ($action !~ m/^(opml|project_list|project_index)$/ &&
 579    !$project) {
 580        die_error(undef, "Project needed");
 581}
 582$actions{$action}->();
 583exit;
 584
 585## ======================================================================
 586## action links
 587
 588sub href(%) {
 589        my %params = @_;
 590        # default is to use -absolute url() i.e. $my_uri
 591        my $href = $params{-full} ? $my_url : $my_uri;
 592
 593        # XXX: Warning: If you touch this, check the search form for updating,
 594        # too.
 595
 596        my @mapping = (
 597                project => "p",
 598                action => "a",
 599                file_name => "f",
 600                file_parent => "fp",
 601                hash => "h",
 602                hash_parent => "hp",
 603                hash_base => "hb",
 604                hash_parent_base => "hpb",
 605                page => "pg",
 606                order => "o",
 607                searchtext => "s",
 608                searchtype => "st",
 609                snapshot_format => "sf",
 610                extra_options => "opt",
 611        );
 612        my %mapping = @mapping;
 613
 614        if ($params{-replay}) {
 615                while (my ($name, $symbol) = each %mapping) {
 616                        if (!exists $params{$name}) {
 617                                # to allow for multivalued params we use arrayref form
 618                                $params{$name} = [ $cgi->param($symbol) ];
 619                        }
 620                }
 621        }
 622
 623        $params{'project'} = $project unless exists $params{'project'};
 624
 625        my ($use_pathinfo) = gitweb_check_feature('pathinfo');
 626        if ($use_pathinfo) {
 627                # use PATH_INFO for project name
 628                $href .= "/$params{'project'}" if defined $params{'project'};
 629                delete $params{'project'};
 630
 631                # Summary just uses the project path URL
 632                if (defined $params{'action'} && $params{'action'} eq 'summary') {
 633                        delete $params{'action'};
 634                }
 635        }
 636
 637        # now encode the parameters explicitly
 638        my @result = ();
 639        for (my $i = 0; $i < @mapping; $i += 2) {
 640                my ($name, $symbol) = ($mapping[$i], $mapping[$i+1]);
 641                if (defined $params{$name}) {
 642                        if (ref($params{$name}) eq "ARRAY") {
 643                                foreach my $par (@{$params{$name}}) {
 644                                        push @result, $symbol . "=" . esc_param($par);
 645                                }
 646                        } else {
 647                                push @result, $symbol . "=" . esc_param($params{$name});
 648                        }
 649                }
 650        }
 651        $href .= "?" . join(';', @result) if scalar @result;
 652
 653        return $href;
 654}
 655
 656
 657## ======================================================================
 658## validation, quoting/unquoting and escaping
 659
 660sub validate_pathname {
 661        my $input = shift || return undef;
 662
 663        # no '.' or '..' as elements of path, i.e. no '.' nor '..'
 664        # at the beginning, at the end, and between slashes.
 665        # also this catches doubled slashes
 666        if ($input =~ m!(^|/)(|\.|\.\.)(/|$)!) {
 667                return undef;
 668        }
 669        # no null characters
 670        if ($input =~ m!\0!) {
 671                return undef;
 672        }
 673        return $input;
 674}
 675
 676sub validate_refname {
 677        my $input = shift || return undef;
 678
 679        # textual hashes are O.K.
 680        if ($input =~ m/^[0-9a-fA-F]{40}$/) {
 681                return $input;
 682        }
 683        # it must be correct pathname
 684        $input = validate_pathname($input)
 685                or return undef;
 686        # restrictions on ref name according to git-check-ref-format
 687        if ($input =~ m!(/\.|\.\.|[\000-\040\177 ~^:?*\[]|/$)!) {
 688                return undef;
 689        }
 690        return $input;
 691}
 692
 693# decode sequences of octets in utf8 into Perl's internal form,
 694# which is utf-8 with utf8 flag set if needed.  gitweb writes out
 695# in utf-8 thanks to "binmode STDOUT, ':utf8'" at beginning
 696sub to_utf8 {
 697        my $str = shift;
 698        my $res;
 699        eval { $res = decode_utf8($str, Encode::FB_CROAK); };
 700        if (defined $res) {
 701                return $res;
 702        } else {
 703                return decode($fallback_encoding, $str, Encode::FB_DEFAULT);
 704        }
 705}
 706
 707# quote unsafe chars, but keep the slash, even when it's not
 708# correct, but quoted slashes look too horrible in bookmarks
 709sub esc_param {
 710        my $str = shift;
 711        $str =~ s/([^A-Za-z0-9\-_.~()\/:@])/sprintf("%%%02X", ord($1))/eg;
 712        $str =~ s/\+/%2B/g;
 713        $str =~ s/ /\+/g;
 714        return $str;
 715}
 716
 717# quote unsafe chars in whole URL, so some charactrs cannot be quoted
 718sub esc_url {
 719        my $str = shift;
 720        $str =~ s/([^A-Za-z0-9\-_.~();\/;?:@&=])/sprintf("%%%02X", ord($1))/eg;
 721        $str =~ s/\+/%2B/g;
 722        $str =~ s/ /\+/g;
 723        return $str;
 724}
 725
 726# replace invalid utf8 character with SUBSTITUTION sequence
 727sub esc_html ($;%) {
 728        my $str = shift;
 729        my %opts = @_;
 730
 731        $str = to_utf8($str);
 732        $str = $cgi->escapeHTML($str);
 733        if ($opts{'-nbsp'}) {
 734                $str =~ s/ /&nbsp;/g;
 735        }
 736        $str =~ s|([[:cntrl:]])|(($1 ne "\t") ? quot_cec($1) : $1)|eg;
 737        return $str;
 738}
 739
 740# quote control characters and escape filename to HTML
 741sub esc_path {
 742        my $str = shift;
 743        my %opts = @_;
 744
 745        $str = to_utf8($str);
 746        $str = $cgi->escapeHTML($str);
 747        if ($opts{'-nbsp'}) {
 748                $str =~ s/ /&nbsp;/g;
 749        }
 750        $str =~ s|([[:cntrl:]])|quot_cec($1)|eg;
 751        return $str;
 752}
 753
 754# Make control characters "printable", using character escape codes (CEC)
 755sub quot_cec {
 756        my $cntrl = shift;
 757        my %es = ( # character escape codes, aka escape sequences
 758                   "\t" => '\t',   # tab            (HT)
 759                   "\n" => '\n',   # line feed      (LF)
 760                   "\r" => '\r',   # carrige return (CR)
 761                   "\f" => '\f',   # form feed      (FF)
 762                   "\b" => '\b',   # backspace      (BS)
 763                   "\a" => '\a',   # alarm (bell)   (BEL)
 764                   "\e" => '\e',   # escape         (ESC)
 765                   "\013" => '\v', # vertical tab   (VT)
 766                   "\000" => '\0', # nul character  (NUL)
 767                   );
 768        my $chr = ( (exists $es{$cntrl})
 769                    ? $es{$cntrl}
 770                    : sprintf('\%03o', ord($cntrl)) );
 771        return "<span class=\"cntrl\">$chr</span>";
 772}
 773
 774# Alternatively use unicode control pictures codepoints,
 775# Unicode "printable representation" (PR)
 776sub quot_upr {
 777        my $cntrl = shift;
 778        my $chr = sprintf('&#%04d;', 0x2400+ord($cntrl));
 779        return "<span class=\"cntrl\">$chr</span>";
 780}
 781
 782# git may return quoted and escaped filenames
 783sub unquote {
 784        my $str = shift;
 785
 786        sub unq {
 787                my $seq = shift;
 788                my %es = ( # character escape codes, aka escape sequences
 789                        't' => "\t",   # tab            (HT, TAB)
 790                        'n' => "\n",   # newline        (NL)
 791                        'r' => "\r",   # return         (CR)
 792                        'f' => "\f",   # form feed      (FF)
 793                        'b' => "\b",   # backspace      (BS)
 794                        'a' => "\a",   # alarm (bell)   (BEL)
 795                        'e' => "\e",   # escape         (ESC)
 796                        'v' => "\013", # vertical tab   (VT)
 797                );
 798
 799                if ($seq =~ m/^[0-7]{1,3}$/) {
 800                        # octal char sequence
 801                        return chr(oct($seq));
 802                } elsif (exists $es{$seq}) {
 803                        # C escape sequence, aka character escape code
 804                        return $es{$seq}
 805                }
 806                # quoted ordinary character
 807                return $seq;
 808        }
 809
 810        if ($str =~ m/^"(.*)"$/) {
 811                # needs unquoting
 812                $str = $1;
 813                $str =~ s/\\([^0-7]|[0-7]{1,3})/unq($1)/eg;
 814        }
 815        return $str;
 816}
 817
 818# escape tabs (convert tabs to spaces)
 819sub untabify {
 820        my $line = shift;
 821
 822        while ((my $pos = index($line, "\t")) != -1) {
 823                if (my $count = (8 - ($pos % 8))) {
 824                        my $spaces = ' ' x $count;
 825                        $line =~ s/\t/$spaces/;
 826                }
 827        }
 828
 829        return $line;
 830}
 831
 832sub project_in_list {
 833        my $project = shift;
 834        my @list = git_get_projects_list();
 835        return @list && scalar(grep { $_->{'path'} eq $project } @list);
 836}
 837
 838## ----------------------------------------------------------------------
 839## HTML aware string manipulation
 840
 841sub chop_str {
 842        my $str = shift;
 843        my $len = shift;
 844        my $add_len = shift || 10;
 845
 846        # allow only $len chars, but don't cut a word if it would fit in $add_len
 847        # if it doesn't fit, cut it if it's still longer than the dots we would add
 848        $str =~ m/^(.{0,$len}[^ \/\-_:\.@]{0,$add_len})(.*)/;
 849        my $body = $1;
 850        my $tail = $2;
 851        if (length($tail) > 4) {
 852                $tail = " ...";
 853                $body =~ s/&[^;]*$//; # remove chopped character entities
 854        }
 855        return "$body$tail";
 856}
 857
 858# takes the same arguments as chop_str, but also wraps a <span> around the
 859# result with a title attribute if it does get chopped. Additionally, the
 860# string is HTML-escaped.
 861sub chop_and_escape_str {
 862        my $str = shift;
 863        my $len = shift;
 864        my $add_len = shift || 10;
 865
 866        my $chopped = chop_str($str, $len, $add_len);
 867        if ($chopped eq $str) {
 868                return esc_html($chopped);
 869        } else {
 870                return qq{<span title="} . esc_html($str) . qq{">} .
 871                        esc_html($chopped) . qq{</span>};
 872        }
 873}
 874
 875## ----------------------------------------------------------------------
 876## functions returning short strings
 877
 878# CSS class for given age value (in seconds)
 879sub age_class {
 880        my $age = shift;
 881
 882        if (!defined $age) {
 883                return "noage";
 884        } elsif ($age < 60*60*2) {
 885                return "age0";
 886        } elsif ($age < 60*60*24*2) {
 887                return "age1";
 888        } else {
 889                return "age2";
 890        }
 891}
 892
 893# convert age in seconds to "nn units ago" string
 894sub age_string {
 895        my $age = shift;
 896        my $age_str;
 897
 898        if ($age > 60*60*24*365*2) {
 899                $age_str = (int $age/60/60/24/365);
 900                $age_str .= " years ago";
 901        } elsif ($age > 60*60*24*(365/12)*2) {
 902                $age_str = int $age/60/60/24/(365/12);
 903                $age_str .= " months ago";
 904        } elsif ($age > 60*60*24*7*2) {
 905                $age_str = int $age/60/60/24/7;
 906                $age_str .= " weeks ago";
 907        } elsif ($age > 60*60*24*2) {
 908                $age_str = int $age/60/60/24;
 909                $age_str .= " days ago";
 910        } elsif ($age > 60*60*2) {
 911                $age_str = int $age/60/60;
 912                $age_str .= " hours ago";
 913        } elsif ($age > 60*2) {
 914                $age_str = int $age/60;
 915                $age_str .= " min ago";
 916        } elsif ($age > 2) {
 917                $age_str = int $age;
 918                $age_str .= " sec ago";
 919        } else {
 920                $age_str .= " right now";
 921        }
 922        return $age_str;
 923}
 924
 925use constant {
 926        S_IFINVALID => 0030000,
 927        S_IFGITLINK => 0160000,
 928};
 929
 930# submodule/subproject, a commit object reference
 931sub S_ISGITLINK($) {
 932        my $mode = shift;
 933
 934        return (($mode & S_IFMT) == S_IFGITLINK)
 935}
 936
 937# convert file mode in octal to symbolic file mode string
 938sub mode_str {
 939        my $mode = oct shift;
 940
 941        if (S_ISGITLINK($mode)) {
 942                return 'm---------';
 943        } elsif (S_ISDIR($mode & S_IFMT)) {
 944                return 'drwxr-xr-x';
 945        } elsif (S_ISLNK($mode)) {
 946                return 'lrwxrwxrwx';
 947        } elsif (S_ISREG($mode)) {
 948                # git cares only about the executable bit
 949                if ($mode & S_IXUSR) {
 950                        return '-rwxr-xr-x';
 951                } else {
 952                        return '-rw-r--r--';
 953                };
 954        } else {
 955                return '----------';
 956        }
 957}
 958
 959# convert file mode in octal to file type string
 960sub file_type {
 961        my $mode = shift;
 962
 963        if ($mode !~ m/^[0-7]+$/) {
 964                return $mode;
 965        } else {
 966                $mode = oct $mode;
 967        }
 968
 969        if (S_ISGITLINK($mode)) {
 970                return "submodule";
 971        } elsif (S_ISDIR($mode & S_IFMT)) {
 972                return "directory";
 973        } elsif (S_ISLNK($mode)) {
 974                return "symlink";
 975        } elsif (S_ISREG($mode)) {
 976                return "file";
 977        } else {
 978                return "unknown";
 979        }
 980}
 981
 982# convert file mode in octal to file type description string
 983sub file_type_long {
 984        my $mode = shift;
 985
 986        if ($mode !~ m/^[0-7]+$/) {
 987                return $mode;
 988        } else {
 989                $mode = oct $mode;
 990        }
 991
 992        if (S_ISGITLINK($mode)) {
 993                return "submodule";
 994        } elsif (S_ISDIR($mode & S_IFMT)) {
 995                return "directory";
 996        } elsif (S_ISLNK($mode)) {
 997                return "symlink";
 998        } elsif (S_ISREG($mode)) {
 999                if ($mode & S_IXUSR) {
1000                        return "executable";
1001                } else {
1002                        return "file";
1003                };
1004        } else {
1005                return "unknown";
1006        }
1007}
1008
1009
1010## ----------------------------------------------------------------------
1011## functions returning short HTML fragments, or transforming HTML fragments
1012## which don't belong to other sections
1013
1014# format line of commit message.
1015sub format_log_line_html {
1016        my $line = shift;
1017
1018        $line = esc_html($line, -nbsp=>1);
1019        if ($line =~ m/([0-9a-fA-F]{8,40})/) {
1020                my $hash_text = $1;
1021                my $link =
1022                        $cgi->a({-href => href(action=>"object", hash=>$hash_text),
1023                                -class => "text"}, $hash_text);
1024                $line =~ s/$hash_text/$link/;
1025        }
1026        return $line;
1027}
1028
1029# format marker of refs pointing to given object
1030sub format_ref_marker {
1031        my ($refs, $id) = @_;
1032        my $markers = '';
1033
1034        if (defined $refs->{$id}) {
1035                foreach my $ref (@{$refs->{$id}}) {
1036                        my ($type, $name) = qw();
1037                        # e.g. tags/v2.6.11 or heads/next
1038                        if ($ref =~ m!^(.*?)s?/(.*)$!) {
1039                                $type = $1;
1040                                $name = $2;
1041                        } else {
1042                                $type = "ref";
1043                                $name = $ref;
1044                        }
1045
1046                        $markers .= " <span class=\"$type\" title=\"$ref\">" .
1047                                    esc_html($name) . "</span>";
1048                }
1049        }
1050
1051        if ($markers) {
1052                return ' <span class="refs">'. $markers . '</span>';
1053        } else {
1054                return "";
1055        }
1056}
1057
1058# format, perhaps shortened and with markers, title line
1059sub format_subject_html {
1060        my ($long, $short, $href, $extra) = @_;
1061        $extra = '' unless defined($extra);
1062
1063        if (length($short) < length($long)) {
1064                return $cgi->a({-href => $href, -class => "list subject",
1065                                -title => to_utf8($long)},
1066                       esc_html($short) . $extra);
1067        } else {
1068                return $cgi->a({-href => $href, -class => "list subject"},
1069                       esc_html($long)  . $extra);
1070        }
1071}
1072
1073# format git diff header line, i.e. "diff --(git|combined|cc) ..."
1074sub format_git_diff_header_line {
1075        my $line = shift;
1076        my $diffinfo = shift;
1077        my ($from, $to) = @_;
1078
1079        if ($diffinfo->{'nparents'}) {
1080                # combined diff
1081                $line =~ s!^(diff (.*?) )"?.*$!$1!;
1082                if ($to->{'href'}) {
1083                        $line .= $cgi->a({-href => $to->{'href'}, -class => "path"},
1084                                         esc_path($to->{'file'}));
1085                } else { # file was deleted (no href)
1086                        $line .= esc_path($to->{'file'});
1087                }
1088        } else {
1089                # "ordinary" diff
1090                $line =~ s!^(diff (.*?) )"?a/.*$!$1!;
1091                if ($from->{'href'}) {
1092                        $line .= $cgi->a({-href => $from->{'href'}, -class => "path"},
1093                                         'a/' . esc_path($from->{'file'}));
1094                } else { # file was added (no href)
1095                        $line .= 'a/' . esc_path($from->{'file'});
1096                }
1097                $line .= ' ';
1098                if ($to->{'href'}) {
1099                        $line .= $cgi->a({-href => $to->{'href'}, -class => "path"},
1100                                         'b/' . esc_path($to->{'file'}));
1101                } else { # file was deleted
1102                        $line .= 'b/' . esc_path($to->{'file'});
1103                }
1104        }
1105
1106        return "<div class=\"diff header\">$line</div>\n";
1107}
1108
1109# format extended diff header line, before patch itself
1110sub format_extended_diff_header_line {
1111        my $line = shift;
1112        my $diffinfo = shift;
1113        my ($from, $to) = @_;
1114
1115        # match <path>
1116        if ($line =~ s!^((copy|rename) from ).*$!$1! && $from->{'href'}) {
1117                $line .= $cgi->a({-href=>$from->{'href'}, -class=>"path"},
1118                                       esc_path($from->{'file'}));
1119        }
1120        if ($line =~ s!^((copy|rename) to ).*$!$1! && $to->{'href'}) {
1121                $line .= $cgi->a({-href=>$to->{'href'}, -class=>"path"},
1122                                 esc_path($to->{'file'}));
1123        }
1124        # match single <mode>
1125        if ($line =~ m/\s(\d{6})$/) {
1126                $line .= '<span class="info"> (' .
1127                         file_type_long($1) .
1128                         ')</span>';
1129        }
1130        # match <hash>
1131        if ($line =~ m/^index [0-9a-fA-F]{40},[0-9a-fA-F]{40}/) {
1132                # can match only for combined diff
1133                $line = 'index ';
1134                for (my $i = 0; $i < $diffinfo->{'nparents'}; $i++) {
1135                        if ($from->{'href'}[$i]) {
1136                                $line .= $cgi->a({-href=>$from->{'href'}[$i],
1137                                                  -class=>"hash"},
1138                                                 substr($diffinfo->{'from_id'}[$i],0,7));
1139                        } else {
1140                                $line .= '0' x 7;
1141                        }
1142                        # separator
1143                        $line .= ',' if ($i < $diffinfo->{'nparents'} - 1);
1144                }
1145                $line .= '..';
1146                if ($to->{'href'}) {
1147                        $line .= $cgi->a({-href=>$to->{'href'}, -class=>"hash"},
1148                                         substr($diffinfo->{'to_id'},0,7));
1149                } else {
1150                        $line .= '0' x 7;
1151                }
1152
1153        } elsif ($line =~ m/^index [0-9a-fA-F]{40}..[0-9a-fA-F]{40}/) {
1154                # can match only for ordinary diff
1155                my ($from_link, $to_link);
1156                if ($from->{'href'}) {
1157                        $from_link = $cgi->a({-href=>$from->{'href'}, -class=>"hash"},
1158                                             substr($diffinfo->{'from_id'},0,7));
1159                } else {
1160                        $from_link = '0' x 7;
1161                }
1162                if ($to->{'href'}) {
1163                        $to_link = $cgi->a({-href=>$to->{'href'}, -class=>"hash"},
1164                                           substr($diffinfo->{'to_id'},0,7));
1165                } else {
1166                        $to_link = '0' x 7;
1167                }
1168                my ($from_id, $to_id) = ($diffinfo->{'from_id'}, $diffinfo->{'to_id'});
1169                $line =~ s!$from_id\.\.$to_id!$from_link..$to_link!;
1170        }
1171
1172        return $line . "<br/>\n";
1173}
1174
1175# format from-file/to-file diff header
1176sub format_diff_from_to_header {
1177        my ($from_line, $to_line, $diffinfo, $from, $to, @parents) = @_;
1178        my $line;
1179        my $result = '';
1180
1181        $line = $from_line;
1182        #assert($line =~ m/^---/) if DEBUG;
1183        # no extra formatting for "^--- /dev/null"
1184        if (! $diffinfo->{'nparents'}) {
1185                # ordinary (single parent) diff
1186                if ($line =~ m!^--- "?a/!) {
1187                        if ($from->{'href'}) {
1188                                $line = '--- a/' .
1189                                        $cgi->a({-href=>$from->{'href'}, -class=>"path"},
1190                                                esc_path($from->{'file'}));
1191                        } else {
1192                                $line = '--- a/' .
1193                                        esc_path($from->{'file'});
1194                        }
1195                }
1196                $result .= qq!<div class="diff from_file">$line</div>\n!;
1197
1198        } else {
1199                # combined diff (merge commit)
1200                for (my $i = 0; $i < $diffinfo->{'nparents'}; $i++) {
1201                        if ($from->{'href'}[$i]) {
1202                                $line = '--- ' .
1203                                        $cgi->a({-href=>href(action=>"blobdiff",
1204                                                             hash_parent=>$diffinfo->{'from_id'}[$i],
1205                                                             hash_parent_base=>$parents[$i],
1206                                                             file_parent=>$from->{'file'}[$i],
1207                                                             hash=>$diffinfo->{'to_id'},
1208                                                             hash_base=>$hash,
1209                                                             file_name=>$to->{'file'}),
1210                                                 -class=>"path",
1211                                                 -title=>"diff" . ($i+1)},
1212                                                $i+1) .
1213                                        '/' .
1214                                        $cgi->a({-href=>$from->{'href'}[$i], -class=>"path"},
1215                                                esc_path($from->{'file'}[$i]));
1216                        } else {
1217                                $line = '--- /dev/null';
1218                        }
1219                        $result .= qq!<div class="diff from_file">$line</div>\n!;
1220                }
1221        }
1222
1223        $line = $to_line;
1224        #assert($line =~ m/^\+\+\+/) if DEBUG;
1225        # no extra formatting for "^+++ /dev/null"
1226        if ($line =~ m!^\+\+\+ "?b/!) {
1227                if ($to->{'href'}) {
1228                        $line = '+++ b/' .
1229                                $cgi->a({-href=>$to->{'href'}, -class=>"path"},
1230                                        esc_path($to->{'file'}));
1231                } else {
1232                        $line = '+++ b/' .
1233                                esc_path($to->{'file'});
1234                }
1235        }
1236        $result .= qq!<div class="diff to_file">$line</div>\n!;
1237
1238        return $result;
1239}
1240
1241# create note for patch simplified by combined diff
1242sub format_diff_cc_simplified {
1243        my ($diffinfo, @parents) = @_;
1244        my $result = '';
1245
1246        $result .= "<div class=\"diff header\">" .
1247                   "diff --cc ";
1248        if (!is_deleted($diffinfo)) {
1249                $result .= $cgi->a({-href => href(action=>"blob",
1250                                                  hash_base=>$hash,
1251                                                  hash=>$diffinfo->{'to_id'},
1252                                                  file_name=>$diffinfo->{'to_file'}),
1253                                    -class => "path"},
1254                                   esc_path($diffinfo->{'to_file'}));
1255        } else {
1256                $result .= esc_path($diffinfo->{'to_file'});
1257        }
1258        $result .= "</div>\n" . # class="diff header"
1259                   "<div class=\"diff nodifferences\">" .
1260                   "Simple merge" .
1261                   "</div>\n"; # class="diff nodifferences"
1262
1263        return $result;
1264}
1265
1266# format patch (diff) line (not to be used for diff headers)
1267sub format_diff_line {
1268        my $line = shift;
1269        my ($from, $to) = @_;
1270        my $diff_class = "";
1271
1272        chomp $line;
1273
1274        if ($from && $to && ref($from->{'href'}) eq "ARRAY") {
1275                # combined diff
1276                my $prefix = substr($line, 0, scalar @{$from->{'href'}});
1277                if ($line =~ m/^\@{3}/) {
1278                        $diff_class = " chunk_header";
1279                } elsif ($line =~ m/^\\/) {
1280                        $diff_class = " incomplete";
1281                } elsif ($prefix =~ tr/+/+/) {
1282                        $diff_class = " add";
1283                } elsif ($prefix =~ tr/-/-/) {
1284                        $diff_class = " rem";
1285                }
1286        } else {
1287                # assume ordinary diff
1288                my $char = substr($line, 0, 1);
1289                if ($char eq '+') {
1290                        $diff_class = " add";
1291                } elsif ($char eq '-') {
1292                        $diff_class = " rem";
1293                } elsif ($char eq '@') {
1294                        $diff_class = " chunk_header";
1295                } elsif ($char eq "\\") {
1296                        $diff_class = " incomplete";
1297                }
1298        }
1299        $line = untabify($line);
1300        if ($from && $to && $line =~ m/^\@{2} /) {
1301                my ($from_text, $from_start, $from_lines, $to_text, $to_start, $to_lines, $section) =
1302                        $line =~ m/^\@{2} (-(\d+)(?:,(\d+))?) (\+(\d+)(?:,(\d+))?) \@{2}(.*)$/;
1303
1304                $from_lines = 0 unless defined $from_lines;
1305                $to_lines   = 0 unless defined $to_lines;
1306
1307                if ($from->{'href'}) {
1308                        $from_text = $cgi->a({-href=>"$from->{'href'}#l$from_start",
1309                                             -class=>"list"}, $from_text);
1310                }
1311                if ($to->{'href'}) {
1312                        $to_text   = $cgi->a({-href=>"$to->{'href'}#l$to_start",
1313                                             -class=>"list"}, $to_text);
1314                }
1315                $line = "<span class=\"chunk_info\">@@ $from_text $to_text @@</span>" .
1316                        "<span class=\"section\">" . esc_html($section, -nbsp=>1) . "</span>";
1317                return "<div class=\"diff$diff_class\">$line</div>\n";
1318        } elsif ($from && $to && $line =~ m/^\@{3}/) {
1319                my ($prefix, $ranges, $section) = $line =~ m/^(\@+) (.*?) \@+(.*)$/;
1320                my (@from_text, @from_start, @from_nlines, $to_text, $to_start, $to_nlines);
1321
1322                @from_text = split(' ', $ranges);
1323                for (my $i = 0; $i < @from_text; ++$i) {
1324                        ($from_start[$i], $from_nlines[$i]) =
1325                                (split(',', substr($from_text[$i], 1)), 0);
1326                }
1327
1328                $to_text   = pop @from_text;
1329                $to_start  = pop @from_start;
1330                $to_nlines = pop @from_nlines;
1331
1332                $line = "<span class=\"chunk_info\">$prefix ";
1333                for (my $i = 0; $i < @from_text; ++$i) {
1334                        if ($from->{'href'}[$i]) {
1335                                $line .= $cgi->a({-href=>"$from->{'href'}[$i]#l$from_start[$i]",
1336                                                  -class=>"list"}, $from_text[$i]);
1337                        } else {
1338                                $line .= $from_text[$i];
1339                        }
1340                        $line .= " ";
1341                }
1342                if ($to->{'href'}) {
1343                        $line .= $cgi->a({-href=>"$to->{'href'}#l$to_start",
1344                                          -class=>"list"}, $to_text);
1345                } else {
1346                        $line .= $to_text;
1347                }
1348                $line .= " $prefix</span>" .
1349                         "<span class=\"section\">" . esc_html($section, -nbsp=>1) . "</span>";
1350                return "<div class=\"diff$diff_class\">$line</div>\n";
1351        }
1352        return "<div class=\"diff$diff_class\">" . esc_html($line, -nbsp=>1) . "</div>\n";
1353}
1354
1355# Generates undef or something like "_snapshot_" or "snapshot (_tbz2_ _zip_)",
1356# linked.  Pass the hash of the tree/commit to snapshot.
1357sub format_snapshot_links {
1358        my ($hash) = @_;
1359        my @snapshot_fmts = gitweb_check_feature('snapshot');
1360        @snapshot_fmts = filter_snapshot_fmts(@snapshot_fmts);
1361        my $num_fmts = @snapshot_fmts;
1362        if ($num_fmts > 1) {
1363                # A parenthesized list of links bearing format names.
1364                # e.g. "snapshot (_tar.gz_ _zip_)"
1365                return "snapshot (" . join(' ', map
1366                        $cgi->a({
1367                                -href => href(
1368                                        action=>"snapshot",
1369                                        hash=>$hash,
1370                                        snapshot_format=>$_
1371                                )
1372                        }, $known_snapshot_formats{$_}{'display'})
1373                , @snapshot_fmts) . ")";
1374        } elsif ($num_fmts == 1) {
1375                # A single "snapshot" link whose tooltip bears the format name.
1376                # i.e. "_snapshot_"
1377                my ($fmt) = @snapshot_fmts;
1378                return
1379                        $cgi->a({
1380                                -href => href(
1381                                        action=>"snapshot",
1382                                        hash=>$hash,
1383                                        snapshot_format=>$fmt
1384                                ),
1385                                -title => "in format: $known_snapshot_formats{$fmt}{'display'}"
1386                        }, "snapshot");
1387        } else { # $num_fmts == 0
1388                return undef;
1389        }
1390}
1391
1392## ----------------------------------------------------------------------
1393## git utility subroutines, invoking git commands
1394
1395# returns path to the core git executable and the --git-dir parameter as list
1396sub git_cmd {
1397        return $GIT, '--git-dir='.$git_dir;
1398}
1399
1400# returns path to the core git executable and the --git-dir parameter as string
1401sub git_cmd_str {
1402        return join(' ', git_cmd());
1403}
1404
1405# get HEAD ref of given project as hash
1406sub git_get_head_hash {
1407        my $project = shift;
1408        my $o_git_dir = $git_dir;
1409        my $retval = undef;
1410        $git_dir = "$projectroot/$project";
1411        if (open my $fd, "-|", git_cmd(), "rev-parse", "--verify", "HEAD") {
1412                my $head = <$fd>;
1413                close $fd;
1414                if (defined $head && $head =~ /^([0-9a-fA-F]{40})$/) {
1415                        $retval = $1;
1416                }
1417        }
1418        if (defined $o_git_dir) {
1419                $git_dir = $o_git_dir;
1420        }
1421        return $retval;
1422}
1423
1424# get type of given object
1425sub git_get_type {
1426        my $hash = shift;
1427
1428        open my $fd, "-|", git_cmd(), "cat-file", '-t', $hash or return;
1429        my $type = <$fd>;
1430        close $fd or return;
1431        chomp $type;
1432        return $type;
1433}
1434
1435sub git_get_project_config {
1436        my ($key, $type) = @_;
1437
1438        return unless ($key);
1439        $key =~ s/^gitweb\.//;
1440        return if ($key =~ m/\W/);
1441
1442        my @x = (git_cmd(), 'config');
1443        if (defined $type) { push @x, $type; }
1444        push @x, "--get";
1445        push @x, "gitweb.$key";
1446        my $val = qx(@x);
1447        chomp $val;
1448        return ($val);
1449}
1450
1451# get hash of given path at given ref
1452sub git_get_hash_by_path {
1453        my $base = shift;
1454        my $path = shift || return undef;
1455        my $type = shift;
1456
1457        $path =~ s,/+$,,;
1458
1459        open my $fd, "-|", git_cmd(), "ls-tree", $base, "--", $path
1460                or die_error(undef, "Open git-ls-tree failed");
1461        my $line = <$fd>;
1462        close $fd or return undef;
1463
1464        if (!defined $line) {
1465                # there is no tree or hash given by $path at $base
1466                return undef;
1467        }
1468
1469        #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
1470        $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t/;
1471        if (defined $type && $type ne $2) {
1472                # type doesn't match
1473                return undef;
1474        }
1475        return $3;
1476}
1477
1478# get path of entry with given hash at given tree-ish (ref)
1479# used to get 'from' filename for combined diff (merge commit) for renames
1480sub git_get_path_by_hash {
1481        my $base = shift || return;
1482        my $hash = shift || return;
1483
1484        local $/ = "\0";
1485
1486        open my $fd, "-|", git_cmd(), "ls-tree", '-r', '-t', '-z', $base
1487                or return undef;
1488        while (my $line = <$fd>) {
1489                chomp $line;
1490
1491                #'040000 tree 595596a6a9117ddba9fe379b6b012b558bac8423  gitweb'
1492                #'100644 blob e02e90f0429be0d2a69b76571101f20b8f75530f  gitweb/README'
1493                if ($line =~ m/(?:[0-9]+) (?:.+) $hash\t(.+)$/) {
1494                        close $fd;
1495                        return $1;
1496                }
1497        }
1498        close $fd;
1499        return undef;
1500}
1501
1502## ......................................................................
1503## git utility functions, directly accessing git repository
1504
1505sub git_get_project_description {
1506        my $path = shift;
1507
1508        open my $fd, "$projectroot/$path/description" or return undef;
1509        my $descr = <$fd>;
1510        close $fd;
1511        if (defined $descr) {
1512                chomp $descr;
1513        }
1514        return $descr;
1515}
1516
1517sub git_get_project_url_list {
1518        my $path = shift;
1519
1520        open my $fd, "$projectroot/$path/cloneurl" or return;
1521        my @git_project_url_list = map { chomp; $_ } <$fd>;
1522        close $fd;
1523
1524        return wantarray ? @git_project_url_list : \@git_project_url_list;
1525}
1526
1527sub git_get_projects_list {
1528        my ($filter) = @_;
1529        my @list;
1530
1531        $filter ||= '';
1532        $filter =~ s/\.git$//;
1533
1534        my ($check_forks) = gitweb_check_feature('forks');
1535
1536        if (-d $projects_list) {
1537                # search in directory
1538                my $dir = $projects_list . ($filter ? "/$filter" : '');
1539                # remove the trailing "/"
1540                $dir =~ s!/+$!!;
1541                my $pfxlen = length("$dir");
1542                my $pfxdepth = ($dir =~ tr!/!!);
1543
1544                File::Find::find({
1545                        follow_fast => 1, # follow symbolic links
1546                        follow_skip => 2, # ignore duplicates
1547                        dangling_symlinks => 0, # ignore dangling symlinks, silently
1548                        wanted => sub {
1549                                # skip project-list toplevel, if we get it.
1550                                return if (m!^[/.]$!);
1551                                # only directories can be git repositories
1552                                return unless (-d $_);
1553                                # don't traverse too deep (Find is super slow on os x)
1554                                if (($File::Find::name =~ tr!/!!) - $pfxdepth > $project_maxdepth) {
1555                                        $File::Find::prune = 1;
1556                                        return;
1557                                }
1558
1559                                my $subdir = substr($File::Find::name, $pfxlen + 1);
1560                                # we check related file in $projectroot
1561                                if ($check_forks and $subdir =~ m#/.#) {
1562                                        $File::Find::prune = 1;
1563                                } elsif (check_export_ok("$projectroot/$filter/$subdir")) {
1564                                        push @list, { path => ($filter ? "$filter/" : '') . $subdir };
1565                                        $File::Find::prune = 1;
1566                                }
1567                        },
1568                }, "$dir");
1569
1570        } elsif (-f $projects_list) {
1571                # read from file(url-encoded):
1572                # 'git%2Fgit.git Linus+Torvalds'
1573                # 'libs%2Fklibc%2Fklibc.git H.+Peter+Anvin'
1574                # 'linux%2Fhotplug%2Fudev.git Greg+Kroah-Hartman'
1575                my %paths;
1576                open my ($fd), $projects_list or return;
1577        PROJECT:
1578                while (my $line = <$fd>) {
1579                        chomp $line;
1580                        my ($path, $owner) = split ' ', $line;
1581                        $path = unescape($path);
1582                        $owner = unescape($owner);
1583                        if (!defined $path) {
1584                                next;
1585                        }
1586                        if ($filter ne '') {
1587                                # looking for forks;
1588                                my $pfx = substr($path, 0, length($filter));
1589                                if ($pfx ne $filter) {
1590                                        next PROJECT;
1591                                }
1592                                my $sfx = substr($path, length($filter));
1593                                if ($sfx !~ /^\/.*\.git$/) {
1594                                        next PROJECT;
1595                                }
1596                        } elsif ($check_forks) {
1597                        PATH:
1598                                foreach my $filter (keys %paths) {
1599                                        # looking for forks;
1600                                        my $pfx = substr($path, 0, length($filter));
1601                                        if ($pfx ne $filter) {
1602                                                next PATH;
1603                                        }
1604                                        my $sfx = substr($path, length($filter));
1605                                        if ($sfx !~ /^\/.*\.git$/) {
1606                                                next PATH;
1607                                        }
1608                                        # is a fork, don't include it in
1609                                        # the list
1610                                        next PROJECT;
1611                                }
1612                        }
1613                        if (check_export_ok("$projectroot/$path")) {
1614                                my $pr = {
1615                                        path => $path,
1616                                        owner => to_utf8($owner),
1617                                };
1618                                push @list, $pr;
1619                                (my $forks_path = $path) =~ s/\.git$//;
1620                                $paths{$forks_path}++;
1621                        }
1622                }
1623                close $fd;
1624        }
1625        return @list;
1626}
1627
1628our $gitweb_project_owner = undef;
1629sub git_get_project_list_from_file {
1630
1631        return if (defined $gitweb_project_owner);
1632
1633        $gitweb_project_owner = {};
1634        # read from file (url-encoded):
1635        # 'git%2Fgit.git Linus+Torvalds'
1636        # 'libs%2Fklibc%2Fklibc.git H.+Peter+Anvin'
1637        # 'linux%2Fhotplug%2Fudev.git Greg+Kroah-Hartman'
1638        if (-f $projects_list) {
1639                open (my $fd , $projects_list);
1640                while (my $line = <$fd>) {
1641                        chomp $line;
1642                        my ($pr, $ow) = split ' ', $line;
1643                        $pr = unescape($pr);
1644                        $ow = unescape($ow);
1645                        $gitweb_project_owner->{$pr} = to_utf8($ow);
1646                }
1647                close $fd;
1648        }
1649}
1650
1651sub git_get_project_owner {
1652        my $project = shift;
1653        my $owner;
1654
1655        return undef unless $project;
1656
1657        if (!defined $gitweb_project_owner) {
1658                git_get_project_list_from_file();
1659        }
1660
1661        if (exists $gitweb_project_owner->{$project}) {
1662                $owner = $gitweb_project_owner->{$project};
1663        }
1664        if (!defined $owner) {
1665                $owner = get_file_owner("$projectroot/$project");
1666        }
1667
1668        return $owner;
1669}
1670
1671sub git_get_last_activity {
1672        my ($path) = @_;
1673        my $fd;
1674
1675        $git_dir = "$projectroot/$path";
1676        open($fd, "-|", git_cmd(), 'for-each-ref',
1677             '--format=%(committer)',
1678             '--sort=-committerdate',
1679             '--count=1',
1680             'refs/heads') or return;
1681        my $most_recent = <$fd>;
1682        close $fd or return;
1683        if (defined $most_recent &&
1684            $most_recent =~ / (\d+) [-+][01]\d\d\d$/) {
1685                my $timestamp = $1;
1686                my $age = time - $timestamp;
1687                return ($age, age_string($age));
1688        }
1689        return (undef, undef);
1690}
1691
1692sub git_get_references {
1693        my $type = shift || "";
1694        my %refs;
1695        # 5dc01c595e6c6ec9ccda4f6f69c131c0dd945f8c refs/tags/v2.6.11
1696        # c39ae07f393806ccf406ef966e9a15afc43cc36a refs/tags/v2.6.11^{}
1697        open my $fd, "-|", git_cmd(), "show-ref", "--dereference",
1698                ($type ? ("--", "refs/$type") : ()) # use -- <pattern> if $type
1699                or return;
1700
1701        while (my $line = <$fd>) {
1702                chomp $line;
1703                if ($line =~ m!^([0-9a-fA-F]{40})\srefs/($type/?[^^]+)!) {
1704                        if (defined $refs{$1}) {
1705                                push @{$refs{$1}}, $2;
1706                        } else {
1707                                $refs{$1} = [ $2 ];
1708                        }
1709                }
1710        }
1711        close $fd or return;
1712        return \%refs;
1713}
1714
1715sub git_get_rev_name_tags {
1716        my $hash = shift || return undef;
1717
1718        open my $fd, "-|", git_cmd(), "name-rev", "--tags", $hash
1719                or return;
1720        my $name_rev = <$fd>;
1721        close $fd;
1722
1723        if ($name_rev =~ m|^$hash tags/(.*)$|) {
1724                return $1;
1725        } else {
1726                # catches also '$hash undefined' output
1727                return undef;
1728        }
1729}
1730
1731## ----------------------------------------------------------------------
1732## parse to hash functions
1733
1734sub parse_date {
1735        my $epoch = shift;
1736        my $tz = shift || "-0000";
1737
1738        my %date;
1739        my @months = ("Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec");
1740        my @days = ("Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat");
1741        my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($epoch);
1742        $date{'hour'} = $hour;
1743        $date{'minute'} = $min;
1744        $date{'mday'} = $mday;
1745        $date{'day'} = $days[$wday];
1746        $date{'month'} = $months[$mon];
1747        $date{'rfc2822'}   = sprintf "%s, %d %s %4d %02d:%02d:%02d +0000",
1748                             $days[$wday], $mday, $months[$mon], 1900+$year, $hour ,$min, $sec;
1749        $date{'mday-time'} = sprintf "%d %s %02d:%02d",
1750                             $mday, $months[$mon], $hour ,$min;
1751        $date{'iso-8601'}  = sprintf "%04d-%02d-%02dT%02d:%02d:%02dZ",
1752                             1900+$year, $mon, $mday, $hour ,$min, $sec;
1753
1754        $tz =~ m/^([+\-][0-9][0-9])([0-9][0-9])$/;
1755        my $local = $epoch + ((int $1 + ($2/60)) * 3600);
1756        ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($local);
1757        $date{'hour_local'} = $hour;
1758        $date{'minute_local'} = $min;
1759        $date{'tz_local'} = $tz;
1760        $date{'iso-tz'} = sprintf("%04d-%02d-%02d %02d:%02d:%02d %s",
1761                                  1900+$year, $mon+1, $mday,
1762                                  $hour, $min, $sec, $tz);
1763        return %date;
1764}
1765
1766sub parse_tag {
1767        my $tag_id = shift;
1768        my %tag;
1769        my @comment;
1770
1771        open my $fd, "-|", git_cmd(), "cat-file", "tag", $tag_id or return;
1772        $tag{'id'} = $tag_id;
1773        while (my $line = <$fd>) {
1774                chomp $line;
1775                if ($line =~ m/^object ([0-9a-fA-F]{40})$/) {
1776                        $tag{'object'} = $1;
1777                } elsif ($line =~ m/^type (.+)$/) {
1778                        $tag{'type'} = $1;
1779                } elsif ($line =~ m/^tag (.+)$/) {
1780                        $tag{'name'} = $1;
1781                } elsif ($line =~ m/^tagger (.*) ([0-9]+) (.*)$/) {
1782                        $tag{'author'} = $1;
1783                        $tag{'epoch'} = $2;
1784                        $tag{'tz'} = $3;
1785                } elsif ($line =~ m/--BEGIN/) {
1786                        push @comment, $line;
1787                        last;
1788                } elsif ($line eq "") {
1789                        last;
1790                }
1791        }
1792        push @comment, <$fd>;
1793        $tag{'comment'} = \@comment;
1794        close $fd or return;
1795        if (!defined $tag{'name'}) {
1796                return
1797        };
1798        return %tag
1799}
1800
1801sub parse_commit_text {
1802        my ($commit_text, $withparents) = @_;
1803        my @commit_lines = split '\n', $commit_text;
1804        my %co;
1805
1806        pop @commit_lines; # Remove '\0'
1807
1808        if (! @commit_lines) {
1809                return;
1810        }
1811
1812        my $header = shift @commit_lines;
1813        if ($header !~ m/^[0-9a-fA-F]{40}/) {
1814                return;
1815        }
1816        ($co{'id'}, my @parents) = split ' ', $header;
1817        while (my $line = shift @commit_lines) {
1818                last if $line eq "\n";
1819                if ($line =~ m/^tree ([0-9a-fA-F]{40})$/) {
1820                        $co{'tree'} = $1;
1821                } elsif ((!defined $withparents) && ($line =~ m/^parent ([0-9a-fA-F]{40})$/)) {
1822                        push @parents, $1;
1823                } elsif ($line =~ m/^author (.*) ([0-9]+) (.*)$/) {
1824                        $co{'author'} = $1;
1825                        $co{'author_epoch'} = $2;
1826                        $co{'author_tz'} = $3;
1827                        if ($co{'author'} =~ m/^([^<]+) <([^>]*)>/) {
1828                                $co{'author_name'}  = $1;
1829                                $co{'author_email'} = $2;
1830                        } else {
1831                                $co{'author_name'} = $co{'author'};
1832                        }
1833                } elsif ($line =~ m/^committer (.*) ([0-9]+) (.*)$/) {
1834                        $co{'committer'} = $1;
1835                        $co{'committer_epoch'} = $2;
1836                        $co{'committer_tz'} = $3;
1837                        $co{'committer_name'} = $co{'committer'};
1838                        if ($co{'committer'} =~ m/^([^<]+) <([^>]*)>/) {
1839                                $co{'committer_name'}  = $1;
1840                                $co{'committer_email'} = $2;
1841                        } else {
1842                                $co{'committer_name'} = $co{'committer'};
1843                        }
1844                }
1845        }
1846        if (!defined $co{'tree'}) {
1847                return;
1848        };
1849        $co{'parents'} = \@parents;
1850        $co{'parent'} = $parents[0];
1851
1852        foreach my $title (@commit_lines) {
1853                $title =~ s/^    //;
1854                if ($title ne "") {
1855                        $co{'title'} = chop_str($title, 80, 5);
1856                        # remove leading stuff of merges to make the interesting part visible
1857                        if (length($title) > 50) {
1858                                $title =~ s/^Automatic //;
1859                                $title =~ s/^merge (of|with) /Merge ... /i;
1860                                if (length($title) > 50) {
1861                                        $title =~ s/(http|rsync):\/\///;
1862                                }
1863                                if (length($title) > 50) {
1864                                        $title =~ s/(master|www|rsync)\.//;
1865                                }
1866                                if (length($title) > 50) {
1867                                        $title =~ s/kernel.org:?//;
1868                                }
1869                                if (length($title) > 50) {
1870                                        $title =~ s/\/pub\/scm//;
1871                                }
1872                        }
1873                        $co{'title_short'} = chop_str($title, 50, 5);
1874                        last;
1875                }
1876        }
1877        if ($co{'title'} eq "") {
1878                $co{'title'} = $co{'title_short'} = '(no commit message)';
1879        }
1880        # remove added spaces
1881        foreach my $line (@commit_lines) {
1882                $line =~ s/^    //;
1883        }
1884        $co{'comment'} = \@commit_lines;
1885
1886        my $age = time - $co{'committer_epoch'};
1887        $co{'age'} = $age;
1888        $co{'age_string'} = age_string($age);
1889        my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($co{'committer_epoch'});
1890        if ($age > 60*60*24*7*2) {
1891                $co{'age_string_date'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
1892                $co{'age_string_age'} = $co{'age_string'};
1893        } else {
1894                $co{'age_string_date'} = $co{'age_string'};
1895                $co{'age_string_age'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
1896        }
1897        return %co;
1898}
1899
1900sub parse_commit {
1901        my ($commit_id) = @_;
1902        my %co;
1903
1904        local $/ = "\0";
1905
1906        open my $fd, "-|", git_cmd(), "rev-list",
1907                "--parents",
1908                "--header",
1909                "--max-count=1",
1910                $commit_id,
1911                "--",
1912                or die_error(undef, "Open git-rev-list failed");
1913        %co = parse_commit_text(<$fd>, 1);
1914        close $fd;
1915
1916        return %co;
1917}
1918
1919sub parse_commits {
1920        my ($commit_id, $maxcount, $skip, $arg, $filename) = @_;
1921        my @cos;
1922
1923        $maxcount ||= 1;
1924        $skip ||= 0;
1925
1926        local $/ = "\0";
1927
1928        open my $fd, "-|", git_cmd(), "rev-list",
1929                "--header",
1930                ($arg ? ($arg) : ()),
1931                ("--max-count=" . $maxcount),
1932                ("--skip=" . $skip),
1933                @extra_options,
1934                $commit_id,
1935                "--",
1936                ($filename ? ($filename) : ())
1937                or die_error(undef, "Open git-rev-list failed");
1938        while (my $line = <$fd>) {
1939                my %co = parse_commit_text($line);
1940                push @cos, \%co;
1941        }
1942        close $fd;
1943
1944        return wantarray ? @cos : \@cos;
1945}
1946
1947# parse ref from ref_file, given by ref_id, with given type
1948sub parse_ref {
1949        my $ref_file = shift;
1950        my $ref_id = shift;
1951        my $type = shift || git_get_type($ref_id);
1952        my %ref_item;
1953
1954        $ref_item{'type'} = $type;
1955        $ref_item{'id'} = $ref_id;
1956        $ref_item{'epoch'} = 0;
1957        $ref_item{'age'} = "unknown";
1958        if ($type eq "tag") {
1959                my %tag = parse_tag($ref_id);
1960                $ref_item{'comment'} = $tag{'comment'};
1961                if ($tag{'type'} eq "commit") {
1962                        my %co = parse_commit($tag{'object'});
1963                        $ref_item{'epoch'} = $co{'committer_epoch'};
1964                        $ref_item{'age'} = $co{'age_string'};
1965                } elsif (defined($tag{'epoch'})) {
1966                        my $age = time - $tag{'epoch'};
1967                        $ref_item{'epoch'} = $tag{'epoch'};
1968                        $ref_item{'age'} = age_string($age);
1969                }
1970                $ref_item{'reftype'} = $tag{'type'};
1971                $ref_item{'name'} = $tag{'name'};
1972                $ref_item{'refid'} = $tag{'object'};
1973        } elsif ($type eq "commit"){
1974                my %co = parse_commit($ref_id);
1975                $ref_item{'reftype'} = "commit";
1976                $ref_item{'name'} = $ref_file;
1977                $ref_item{'title'} = $co{'title'};
1978                $ref_item{'refid'} = $ref_id;
1979                $ref_item{'epoch'} = $co{'committer_epoch'};
1980                $ref_item{'age'} = $co{'age_string'};
1981        } else {
1982                $ref_item{'reftype'} = $type;
1983                $ref_item{'name'} = $ref_file;
1984                $ref_item{'refid'} = $ref_id;
1985        }
1986
1987        return %ref_item;
1988}
1989
1990# parse line of git-diff-tree "raw" output
1991sub parse_difftree_raw_line {
1992        my $line = shift;
1993        my %res;
1994
1995        # ':100644 100644 03b218260e99b78c6df0ed378e59ed9205ccc96d 3b93d5e7cc7f7dd4ebed13a5cc1a4ad976fc94d8 M   ls-files.c'
1996        # ':100644 100644 7f9281985086971d3877aca27704f2aaf9c448ce bc190ebc71bbd923f2b728e505408f5e54bd073a M   rev-tree.c'
1997        if ($line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)([0-9]{0,3})\t(.*)$/) {
1998                $res{'from_mode'} = $1;
1999                $res{'to_mode'} = $2;
2000                $res{'from_id'} = $3;
2001                $res{'to_id'} = $4;
2002                $res{'status'} = $res{'status_str'} = $5;
2003                $res{'similarity'} = $6;
2004                if ($res{'status'} eq 'R' || $res{'status'} eq 'C') { # renamed or copied
2005                        ($res{'from_file'}, $res{'to_file'}) = map { unquote($_) } split("\t", $7);
2006                } else {
2007                        $res{'from_file'} = $res{'to_file'} = $res{'file'} = unquote($7);
2008                }
2009        }
2010        # '::100755 100755 100755 60e79ca1b01bc8b057abe17ddab484699a7f5fdb 94067cc5f73388f33722d52ae02f44692bc07490 94067cc5f73388f33722d52ae02f44692bc07490 MR git-gui/git-gui.sh'
2011        # combined diff (for merge commit)
2012        elsif ($line =~ s/^(::+)((?:[0-7]{6} )+)((?:[0-9a-fA-F]{40} )+)([a-zA-Z]+)\t(.*)$//) {
2013                $res{'nparents'}  = length($1);
2014                $res{'from_mode'} = [ split(' ', $2) ];
2015                $res{'to_mode'} = pop @{$res{'from_mode'}};
2016                $res{'from_id'} = [ split(' ', $3) ];
2017                $res{'to_id'} = pop @{$res{'from_id'}};
2018                $res{'status_str'} = $4;
2019                $res{'status'} = [ split('', $4) ];
2020                $res{'to_file'} = unquote($5);
2021        }
2022        # 'c512b523472485aef4fff9e57b229d9d243c967f'
2023        elsif ($line =~ m/^([0-9a-fA-F]{40})$/) {
2024                $res{'commit'} = $1;
2025        }
2026
2027        return wantarray ? %res : \%res;
2028}
2029
2030# wrapper: return parsed line of git-diff-tree "raw" output
2031# (the argument might be raw line, or parsed info)
2032sub parsed_difftree_line {
2033        my $line_or_ref = shift;
2034
2035        if (ref($line_or_ref) eq "HASH") {
2036                # pre-parsed (or generated by hand)
2037                return $line_or_ref;
2038        } else {
2039                return parse_difftree_raw_line($line_or_ref);
2040        }
2041}
2042
2043# parse line of git-ls-tree output
2044sub parse_ls_tree_line ($;%) {
2045        my $line = shift;
2046        my %opts = @_;
2047        my %res;
2048
2049        #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
2050        $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t(.+)$/s;
2051
2052        $res{'mode'} = $1;
2053        $res{'type'} = $2;
2054        $res{'hash'} = $3;
2055        if ($opts{'-z'}) {
2056                $res{'name'} = $4;
2057        } else {
2058                $res{'name'} = unquote($4);
2059        }
2060
2061        return wantarray ? %res : \%res;
2062}
2063
2064# generates _two_ hashes, references to which are passed as 2 and 3 argument
2065sub parse_from_to_diffinfo {
2066        my ($diffinfo, $from, $to, @parents) = @_;
2067
2068        if ($diffinfo->{'nparents'}) {
2069                # combined diff
2070                $from->{'file'} = [];
2071                $from->{'href'} = [];
2072                fill_from_file_info($diffinfo, @parents)
2073                        unless exists $diffinfo->{'from_file'};
2074                for (my $i = 0; $i < $diffinfo->{'nparents'}; $i++) {
2075                        $from->{'file'}[$i] =
2076                                defined $diffinfo->{'from_file'}[$i] ?
2077                                        $diffinfo->{'from_file'}[$i] :
2078                                        $diffinfo->{'to_file'};
2079                        if ($diffinfo->{'status'}[$i] ne "A") { # not new (added) file
2080                                $from->{'href'}[$i] = href(action=>"blob",
2081                                                           hash_base=>$parents[$i],
2082                                                           hash=>$diffinfo->{'from_id'}[$i],
2083                                                           file_name=>$from->{'file'}[$i]);
2084                        } else {
2085                                $from->{'href'}[$i] = undef;
2086                        }
2087                }
2088        } else {
2089                # ordinary (not combined) diff
2090                $from->{'file'} = $diffinfo->{'from_file'};
2091                if ($diffinfo->{'status'} ne "A") { # not new (added) file
2092                        $from->{'href'} = href(action=>"blob", hash_base=>$hash_parent,
2093                                               hash=>$diffinfo->{'from_id'},
2094                                               file_name=>$from->{'file'});
2095                } else {
2096                        delete $from->{'href'};
2097                }
2098        }
2099
2100        $to->{'file'} = $diffinfo->{'to_file'};
2101        if (!is_deleted($diffinfo)) { # file exists in result
2102                $to->{'href'} = href(action=>"blob", hash_base=>$hash,
2103                                     hash=>$diffinfo->{'to_id'},
2104                                     file_name=>$to->{'file'});
2105        } else {
2106                delete $to->{'href'};
2107        }
2108}
2109
2110## ......................................................................
2111## parse to array of hashes functions
2112
2113sub git_get_heads_list {
2114        my $limit = shift;
2115        my @headslist;
2116
2117        open my $fd, '-|', git_cmd(), 'for-each-ref',
2118                ($limit ? '--count='.($limit+1) : ()), '--sort=-committerdate',
2119                '--format=%(objectname) %(refname) %(subject)%00%(committer)',
2120                'refs/heads'
2121                or return;
2122        while (my $line = <$fd>) {
2123                my %ref_item;
2124
2125                chomp $line;
2126                my ($refinfo, $committerinfo) = split(/\0/, $line);
2127                my ($hash, $name, $title) = split(' ', $refinfo, 3);
2128                my ($committer, $epoch, $tz) =
2129                        ($committerinfo =~ /^(.*) ([0-9]+) (.*)$/);
2130                $name =~ s!^refs/heads/!!;
2131
2132                $ref_item{'name'}  = $name;
2133                $ref_item{'id'}    = $hash;
2134                $ref_item{'title'} = $title || '(no commit message)';
2135                $ref_item{'epoch'} = $epoch;
2136                if ($epoch) {
2137                        $ref_item{'age'} = age_string(time - $ref_item{'epoch'});
2138                } else {
2139                        $ref_item{'age'} = "unknown";
2140                }
2141
2142                push @headslist, \%ref_item;
2143        }
2144        close $fd;
2145
2146        return wantarray ? @headslist : \@headslist;
2147}
2148
2149sub git_get_tags_list {
2150        my $limit = shift;
2151        my @tagslist;
2152
2153        open my $fd, '-|', git_cmd(), 'for-each-ref',
2154                ($limit ? '--count='.($limit+1) : ()), '--sort=-creatordate',
2155                '--format=%(objectname) %(objecttype) %(refname) '.
2156                '%(*objectname) %(*objecttype) %(subject)%00%(creator)',
2157                'refs/tags'
2158                or return;
2159        while (my $line = <$fd>) {
2160                my %ref_item;
2161
2162                chomp $line;
2163                my ($refinfo, $creatorinfo) = split(/\0/, $line);
2164                my ($id, $type, $name, $refid, $reftype, $title) = split(' ', $refinfo, 6);
2165                my ($creator, $epoch, $tz) =
2166                        ($creatorinfo =~ /^(.*) ([0-9]+) (.*)$/);
2167                $name =~ s!^refs/tags/!!;
2168
2169                $ref_item{'type'} = $type;
2170                $ref_item{'id'} = $id;
2171                $ref_item{'name'} = $name;
2172                if ($type eq "tag") {
2173                        $ref_item{'subject'} = $title;
2174                        $ref_item{'reftype'} = $reftype;
2175                        $ref_item{'refid'}   = $refid;
2176                } else {
2177                        $ref_item{'reftype'} = $type;
2178                        $ref_item{'refid'}   = $id;
2179                }
2180
2181                if ($type eq "tag" || $type eq "commit") {
2182                        $ref_item{'epoch'} = $epoch;
2183                        if ($epoch) {
2184                                $ref_item{'age'} = age_string(time - $ref_item{'epoch'});
2185                        } else {
2186                                $ref_item{'age'} = "unknown";
2187                        }
2188                }
2189
2190                push @tagslist, \%ref_item;
2191        }
2192        close $fd;
2193
2194        return wantarray ? @tagslist : \@tagslist;
2195}
2196
2197## ----------------------------------------------------------------------
2198## filesystem-related functions
2199
2200sub get_file_owner {
2201        my $path = shift;
2202
2203        my ($dev, $ino, $mode, $nlink, $st_uid, $st_gid, $rdev, $size) = stat($path);
2204        my ($name, $passwd, $uid, $gid, $quota, $comment, $gcos, $dir, $shell) = getpwuid($st_uid);
2205        if (!defined $gcos) {
2206                return undef;
2207        }
2208        my $owner = $gcos;
2209        $owner =~ s/[,;].*$//;
2210        return to_utf8($owner);
2211}
2212
2213## ......................................................................
2214## mimetype related functions
2215
2216sub mimetype_guess_file {
2217        my $filename = shift;
2218        my $mimemap = shift;
2219        -r $mimemap or return undef;
2220
2221        my %mimemap;
2222        open(MIME, $mimemap) or return undef;
2223        while (<MIME>) {
2224                next if m/^#/; # skip comments
2225                my ($mime, $exts) = split(/\t+/);
2226                if (defined $exts) {
2227                        my @exts = split(/\s+/, $exts);
2228                        foreach my $ext (@exts) {
2229                                $mimemap{$ext} = $mime;
2230                        }
2231                }
2232        }
2233        close(MIME);
2234
2235        $filename =~ /\.([^.]*)$/;
2236        return $mimemap{$1};
2237}
2238
2239sub mimetype_guess {
2240        my $filename = shift;
2241        my $mime;
2242        $filename =~ /\./ or return undef;
2243
2244        if ($mimetypes_file) {
2245                my $file = $mimetypes_file;
2246                if ($file !~ m!^/!) { # if it is relative path
2247                        # it is relative to project
2248                        $file = "$projectroot/$project/$file";
2249                }
2250                $mime = mimetype_guess_file($filename, $file);
2251        }
2252        $mime ||= mimetype_guess_file($filename, '/etc/mime.types');
2253        return $mime;
2254}
2255
2256sub blob_mimetype {
2257        my $fd = shift;
2258        my $filename = shift;
2259
2260        if ($filename) {
2261                my $mime = mimetype_guess($filename);
2262                $mime and return $mime;
2263        }
2264
2265        # just in case
2266        return $default_blob_plain_mimetype unless $fd;
2267
2268        if (-T $fd) {
2269                return 'text/plain' .
2270                       ($default_text_plain_charset ? '; charset='.$default_text_plain_charset : '');
2271        } elsif (! $filename) {
2272                return 'application/octet-stream';
2273        } elsif ($filename =~ m/\.png$/i) {
2274                return 'image/png';
2275        } elsif ($filename =~ m/\.gif$/i) {
2276                return 'image/gif';
2277        } elsif ($filename =~ m/\.jpe?g$/i) {
2278                return 'image/jpeg';
2279        } else {
2280                return 'application/octet-stream';
2281        }
2282}
2283
2284## ======================================================================
2285## functions printing HTML: header, footer, error page
2286
2287sub git_header_html {
2288        my $status = shift || "200 OK";
2289        my $expires = shift;
2290
2291        my $title = "$site_name";
2292        if (defined $project) {
2293                $title .= " - " . to_utf8($project);
2294                if (defined $action) {
2295                        $title .= "/$action";
2296                        if (defined $file_name) {
2297                                $title .= " - " . esc_path($file_name);
2298                                if ($action eq "tree" && $file_name !~ m|/$|) {
2299                                        $title .= "/";
2300                                }
2301                        }
2302                }
2303        }
2304        my $content_type;
2305        # require explicit support from the UA if we are to send the page as
2306        # 'application/xhtml+xml', otherwise send it as plain old 'text/html'.
2307        # we have to do this because MSIE sometimes globs '*/*', pretending to
2308        # support xhtml+xml but choking when it gets what it asked for.
2309        if (defined $cgi->http('HTTP_ACCEPT') &&
2310            $cgi->http('HTTP_ACCEPT') =~ m/(,|;|\s|^)application\/xhtml\+xml(,|;|\s|$)/ &&
2311            $cgi->Accept('application/xhtml+xml') != 0) {
2312                $content_type = 'application/xhtml+xml';
2313        } else {
2314                $content_type = 'text/html';
2315        }
2316        print $cgi->header(-type=>$content_type, -charset => 'utf-8',
2317                           -status=> $status, -expires => $expires);
2318        my $mod_perl_version = $ENV{'MOD_PERL'} ? " $ENV{'MOD_PERL'}" : '';
2319        print <<EOF;
2320<?xml version="1.0" encoding="utf-8"?>
2321<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
2322<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en-US" lang="en-US">
2323<!-- git web interface version $version, (C) 2005-2006, Kay Sievers <kay.sievers\@vrfy.org>, Christian Gierke -->
2324<!-- git core binaries version $git_version -->
2325<head>
2326<meta http-equiv="content-type" content="$content_type; charset=utf-8"/>
2327<meta name="generator" content="gitweb/$version git/$git_version$mod_perl_version"/>
2328<meta name="robots" content="index, nofollow"/>
2329<title>$title</title>
2330EOF
2331# print out each stylesheet that exist
2332        if (defined $stylesheet) {
2333#provides backwards capability for those people who define style sheet in a config file
2334                print '<link rel="stylesheet" type="text/css" href="'.$stylesheet.'"/>'."\n";
2335        } else {
2336                foreach my $stylesheet (@stylesheets) {
2337                        next unless $stylesheet;
2338                        print '<link rel="stylesheet" type="text/css" href="'.$stylesheet.'"/>'."\n";
2339                }
2340        }
2341        if (defined $project) {
2342                printf('<link rel="alternate" title="%s log RSS feed" '.
2343                       'href="%s" type="application/rss+xml" />'."\n",
2344                       esc_param($project), href(action=>"rss"));
2345                printf('<link rel="alternate" title="%s log RSS feed (no merges)" '.
2346                       'href="%s" type="application/rss+xml" />'."\n",
2347                       esc_param($project), href(action=>"rss",
2348                                                 extra_options=>"--no-merges"));
2349                printf('<link rel="alternate" title="%s log Atom feed" '.
2350                       'href="%s" type="application/atom+xml" />'."\n",
2351                       esc_param($project), href(action=>"atom"));
2352                printf('<link rel="alternate" title="%s log Atom feed (no merges)" '.
2353                       'href="%s" type="application/atom+xml" />'."\n",
2354                       esc_param($project), href(action=>"atom",
2355                                                 extra_options=>"--no-merges"));
2356        } else {
2357                printf('<link rel="alternate" title="%s projects list" '.
2358                       'href="%s" type="text/plain; charset=utf-8"/>'."\n",
2359                       $site_name, href(project=>undef, action=>"project_index"));
2360                printf('<link rel="alternate" title="%s projects feeds" '.
2361                       'href="%s" type="text/x-opml"/>'."\n",
2362                       $site_name, href(project=>undef, action=>"opml"));
2363        }
2364        if (defined $favicon) {
2365                print qq(<link rel="shortcut icon" href="$favicon" type="image/png"/>\n);
2366        }
2367
2368        print "</head>\n" .
2369              "<body>\n";
2370
2371        if (-f $site_header) {
2372                open (my $fd, $site_header);
2373                print <$fd>;
2374                close $fd;
2375        }
2376
2377        print "<div class=\"page_header\">\n" .
2378              $cgi->a({-href => esc_url($logo_url),
2379                       -title => $logo_label},
2380                      qq(<img src="$logo" width="72" height="27" alt="git" class="logo"/>));
2381        print $cgi->a({-href => esc_url($home_link)}, $home_link_str) . " / ";
2382        if (defined $project) {
2383                print $cgi->a({-href => href(action=>"summary")}, esc_html($project));
2384                if (defined $action) {
2385                        print " / $action";
2386                }
2387                print "\n";
2388        }
2389        print "</div>\n";
2390
2391        my ($have_search) = gitweb_check_feature('search');
2392        if ((defined $project) && ($have_search)) {
2393                if (!defined $searchtext) {
2394                        $searchtext = "";
2395                }
2396                my $search_hash;
2397                if (defined $hash_base) {
2398                        $search_hash = $hash_base;
2399                } elsif (defined $hash) {
2400                        $search_hash = $hash;
2401                } else {
2402                        $search_hash = "HEAD";
2403                }
2404                my $action = $my_uri;
2405                my ($use_pathinfo) = gitweb_check_feature('pathinfo');
2406                if ($use_pathinfo) {
2407                        $action .= "/$project";
2408                } else {
2409                        $cgi->param("p", $project);
2410                }
2411                $cgi->param("a", "search");
2412                $cgi->param("h", $search_hash);
2413                print $cgi->startform(-method => "get", -action => $action) .
2414                      "<div class=\"search\">\n" .
2415                      (!$use_pathinfo && $cgi->hidden(-name => "p") . "\n") .
2416                      $cgi->hidden(-name => "a") . "\n" .
2417                      $cgi->hidden(-name => "h") . "\n" .
2418                      $cgi->popup_menu(-name => 'st', -default => 'commit',
2419                                       -values => ['commit', 'grep', 'author', 'committer', 'pickaxe']) .
2420                      $cgi->sup($cgi->a({-href => href(action=>"search_help")}, "?")) .
2421                      " search:\n",
2422                      $cgi->textfield(-name => "s", -value => $searchtext) . "\n" .
2423                      "</div>" .
2424                      $cgi->end_form() . "\n";
2425        }
2426}
2427
2428sub git_footer_html {
2429        print "<div class=\"page_footer\">\n";
2430        if (defined $project) {
2431                my $descr = git_get_project_description($project);
2432                if (defined $descr) {
2433                        print "<div class=\"page_footer_text\">" . esc_html($descr) . "</div>\n";
2434                }
2435                print $cgi->a({-href => href(action=>"rss"),
2436                              -class => "rss_logo"}, "RSS") . " ";
2437                print $cgi->a({-href => href(action=>"atom"),
2438                              -class => "rss_logo"}, "Atom") . "\n";
2439        } else {
2440                print $cgi->a({-href => href(project=>undef, action=>"opml"),
2441                              -class => "rss_logo"}, "OPML") . " ";
2442                print $cgi->a({-href => href(project=>undef, action=>"project_index"),
2443                              -class => "rss_logo"}, "TXT") . "\n";
2444        }
2445        print "</div>\n" ;
2446
2447        if (-f $site_footer) {
2448                open (my $fd, $site_footer);
2449                print <$fd>;
2450                close $fd;
2451        }
2452
2453        print "</body>\n" .
2454              "</html>";
2455}
2456
2457sub die_error {
2458        my $status = shift || "403 Forbidden";
2459        my $error = shift || "Malformed query, file missing or permission denied";
2460
2461        git_header_html($status);
2462        print <<EOF;
2463<div class="page_body">
2464<br /><br />
2465$status - $error
2466<br />
2467</div>
2468EOF
2469        git_footer_html();
2470        exit;
2471}
2472
2473## ----------------------------------------------------------------------
2474## functions printing or outputting HTML: navigation
2475
2476sub git_print_page_nav {
2477        my ($current, $suppress, $head, $treehead, $treebase, $extra) = @_;
2478        $extra = '' if !defined $extra; # pager or formats
2479
2480        my @navs = qw(summary shortlog log commit commitdiff tree);
2481        if ($suppress) {
2482                @navs = grep { $_ ne $suppress } @navs;
2483        }
2484
2485        my %arg = map { $_ => {action=>$_} } @navs;
2486        if (defined $head) {
2487                for (qw(commit commitdiff)) {
2488                        $arg{$_}{'hash'} = $head;
2489                }
2490                if ($current =~ m/^(tree | log | shortlog | commit | commitdiff | search)$/x) {
2491                        for (qw(shortlog log)) {
2492                                $arg{$_}{'hash'} = $head;
2493                        }
2494                }
2495        }
2496        $arg{'tree'}{'hash'} = $treehead if defined $treehead;
2497        $arg{'tree'}{'hash_base'} = $treebase if defined $treebase;
2498
2499        print "<div class=\"page_nav\">\n" .
2500                (join " | ",
2501                 map { $_ eq $current ?
2502                       $_ : $cgi->a({-href => href(%{$arg{$_}})}, "$_")
2503                 } @navs);
2504        print "<br/>\n$extra<br/>\n" .
2505              "</div>\n";
2506}
2507
2508sub format_paging_nav {
2509        my ($action, $hash, $head, $page, $nrevs) = @_;
2510        my $paging_nav;
2511
2512
2513        if ($hash ne $head || $page) {
2514                $paging_nav .= $cgi->a({-href => href(action=>$action)}, "HEAD");
2515        } else {
2516                $paging_nav .= "HEAD";
2517        }
2518
2519        if ($page > 0) {
2520                $paging_nav .= " &sdot; " .
2521                        $cgi->a({-href => href(-replay=>1, page=>$page-1),
2522                                 -accesskey => "p", -title => "Alt-p"}, "prev");
2523        } else {
2524                $paging_nav .= " &sdot; prev";
2525        }
2526
2527        if ($nrevs >= (100 * ($page+1)-1)) {
2528                $paging_nav .= " &sdot; " .
2529                        $cgi->a({-href => href(-replay=>1, page=>$page+1),
2530                                 -accesskey => "n", -title => "Alt-n"}, "next");
2531        } else {
2532                $paging_nav .= " &sdot; next";
2533        }
2534
2535        return $paging_nav;
2536}
2537
2538## ......................................................................
2539## functions printing or outputting HTML: div
2540
2541sub git_print_header_div {
2542        my ($action, $title, $hash, $hash_base) = @_;
2543        my %args = ();
2544
2545        $args{'action'} = $action;
2546        $args{'hash'} = $hash if $hash;
2547        $args{'hash_base'} = $hash_base if $hash_base;
2548
2549        print "<div class=\"header\">\n" .
2550              $cgi->a({-href => href(%args), -class => "title"},
2551              $title ? $title : $action) .
2552              "\n</div>\n";
2553}
2554
2555#sub git_print_authorship (\%) {
2556sub git_print_authorship {
2557        my $co = shift;
2558
2559        my %ad = parse_date($co->{'author_epoch'}, $co->{'author_tz'});
2560        print "<div class=\"author_date\">" .
2561              esc_html($co->{'author_name'}) .
2562              " [$ad{'rfc2822'}";
2563        if ($ad{'hour_local'} < 6) {
2564                printf(" (<span class=\"atnight\">%02d:%02d</span> %s)",
2565                       $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
2566        } else {
2567                printf(" (%02d:%02d %s)",
2568                       $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
2569        }
2570        print "]</div>\n";
2571}
2572
2573sub git_print_page_path {
2574        my $name = shift;
2575        my $type = shift;
2576        my $hb = shift;
2577
2578
2579        print "<div class=\"page_path\">";
2580        print $cgi->a({-href => href(action=>"tree", hash_base=>$hb),
2581                      -title => 'tree root'}, to_utf8("[$project]"));
2582        print " / ";
2583        if (defined $name) {
2584                my @dirname = split '/', $name;
2585                my $basename = pop @dirname;
2586                my $fullname = '';
2587
2588                foreach my $dir (@dirname) {
2589                        $fullname .= ($fullname ? '/' : '') . $dir;
2590                        print $cgi->a({-href => href(action=>"tree", file_name=>$fullname,
2591                                                     hash_base=>$hb),
2592                                      -title => $fullname}, esc_path($dir));
2593                        print " / ";
2594                }
2595                if (defined $type && $type eq 'blob') {
2596                        print $cgi->a({-href => href(action=>"blob_plain", file_name=>$file_name,
2597                                                     hash_base=>$hb),
2598                                      -title => $name}, esc_path($basename));
2599                } elsif (defined $type && $type eq 'tree') {
2600                        print $cgi->a({-href => href(action=>"tree", file_name=>$file_name,
2601                                                     hash_base=>$hb),
2602                                      -title => $name}, esc_path($basename));
2603                        print " / ";
2604                } else {
2605                        print esc_path($basename);
2606                }
2607        }
2608        print "<br/></div>\n";
2609}
2610
2611# sub git_print_log (\@;%) {
2612sub git_print_log ($;%) {
2613        my $log = shift;
2614        my %opts = @_;
2615
2616        if ($opts{'-remove_title'}) {
2617                # remove title, i.e. first line of log
2618                shift @$log;
2619        }
2620        # remove leading empty lines
2621        while (defined $log->[0] && $log->[0] eq "") {
2622                shift @$log;
2623        }
2624
2625        # print log
2626        my $signoff = 0;
2627        my $empty = 0;
2628        foreach my $line (@$log) {
2629                if ($line =~ m/^ *(signed[ \-]off[ \-]by[ :]|acked[ \-]by[ :]|cc[ :])/i) {
2630                        $signoff = 1;
2631                        $empty = 0;
2632                        if (! $opts{'-remove_signoff'}) {
2633                                print "<span class=\"signoff\">" . esc_html($line) . "</span><br/>\n";
2634                                next;
2635                        } else {
2636                                # remove signoff lines
2637                                next;
2638                        }
2639                } else {
2640                        $signoff = 0;
2641                }
2642
2643                # print only one empty line
2644                # do not print empty line after signoff
2645                if ($line eq "") {
2646                        next if ($empty || $signoff);
2647                        $empty = 1;
2648                } else {
2649                        $empty = 0;
2650                }
2651
2652                print format_log_line_html($line) . "<br/>\n";
2653        }
2654
2655        if ($opts{'-final_empty_line'}) {
2656                # end with single empty line
2657                print "<br/>\n" unless $empty;
2658        }
2659}
2660
2661# return link target (what link points to)
2662sub git_get_link_target {
2663        my $hash = shift;
2664        my $link_target;
2665
2666        # read link
2667        open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
2668                or return;
2669        {
2670                local $/;
2671                $link_target = <$fd>;
2672        }
2673        close $fd
2674                or return;
2675
2676        return $link_target;
2677}
2678
2679# given link target, and the directory (basedir) the link is in,
2680# return target of link relative to top directory (top tree);
2681# return undef if it is not possible (including absolute links).
2682sub normalize_link_target {
2683        my ($link_target, $basedir, $hash_base) = @_;
2684
2685        # we can normalize symlink target only if $hash_base is provided
2686        return unless $hash_base;
2687
2688        # absolute symlinks (beginning with '/') cannot be normalized
2689        return if (substr($link_target, 0, 1) eq '/');
2690
2691        # normalize link target to path from top (root) tree (dir)
2692        my $path;
2693        if ($basedir) {
2694                $path = $basedir . '/' . $link_target;
2695        } else {
2696                # we are in top (root) tree (dir)
2697                $path = $link_target;
2698        }
2699
2700        # remove //, /./, and /../
2701        my @path_parts;
2702        foreach my $part (split('/', $path)) {
2703                # discard '.' and ''
2704                next if (!$part || $part eq '.');
2705                # handle '..'
2706                if ($part eq '..') {
2707                        if (@path_parts) {
2708                                pop @path_parts;
2709                        } else {
2710                                # link leads outside repository (outside top dir)
2711                                return;
2712                        }
2713                } else {
2714                        push @path_parts, $part;
2715                }
2716        }
2717        $path = join('/', @path_parts);
2718
2719        return $path;
2720}
2721
2722# print tree entry (row of git_tree), but without encompassing <tr> element
2723sub git_print_tree_entry {
2724        my ($t, $basedir, $hash_base, $have_blame) = @_;
2725
2726        my %base_key = ();
2727        $base_key{'hash_base'} = $hash_base if defined $hash_base;
2728
2729        # The format of a table row is: mode list link.  Where mode is
2730        # the mode of the entry, list is the name of the entry, an href,
2731        # and link is the action links of the entry.
2732
2733        print "<td class=\"mode\">" . mode_str($t->{'mode'}) . "</td>\n";
2734        if ($t->{'type'} eq "blob") {
2735                print "<td class=\"list\">" .
2736                        $cgi->a({-href => href(action=>"blob", hash=>$t->{'hash'},
2737                                               file_name=>"$basedir$t->{'name'}", %base_key),
2738                                -class => "list"}, esc_path($t->{'name'}));
2739                if (S_ISLNK(oct $t->{'mode'})) {
2740                        my $link_target = git_get_link_target($t->{'hash'});
2741                        if ($link_target) {
2742                                my $norm_target = normalize_link_target($link_target, $basedir, $hash_base);
2743                                if (defined $norm_target) {
2744                                        print " -> " .
2745                                              $cgi->a({-href => href(action=>"object", hash_base=>$hash_base,
2746                                                                     file_name=>$norm_target),
2747                                                       -title => $norm_target}, esc_path($link_target));
2748                                } else {
2749                                        print " -> " . esc_path($link_target);
2750                                }
2751                        }
2752                }
2753                print "</td>\n";
2754                print "<td class=\"link\">";
2755                print $cgi->a({-href => href(action=>"blob", hash=>$t->{'hash'},
2756                                             file_name=>"$basedir$t->{'name'}", %base_key)},
2757                              "blob");
2758                if ($have_blame) {
2759                        print " | " .
2760                              $cgi->a({-href => href(action=>"blame", hash=>$t->{'hash'},
2761                                                     file_name=>"$basedir$t->{'name'}", %base_key)},
2762                                      "blame");
2763                }
2764                if (defined $hash_base) {
2765                        print " | " .
2766                              $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
2767                                                     hash=>$t->{'hash'}, file_name=>"$basedir$t->{'name'}")},
2768                                      "history");
2769                }
2770                print " | " .
2771                        $cgi->a({-href => href(action=>"blob_plain", hash_base=>$hash_base,
2772                                               file_name=>"$basedir$t->{'name'}")},
2773                                "raw");
2774                print "</td>\n";
2775
2776        } elsif ($t->{'type'} eq "tree") {
2777                print "<td class=\"list\">";
2778                print $cgi->a({-href => href(action=>"tree", hash=>$t->{'hash'},
2779                                             file_name=>"$basedir$t->{'name'}", %base_key)},
2780                              esc_path($t->{'name'}));
2781                print "</td>\n";
2782                print "<td class=\"link\">";
2783                print $cgi->a({-href => href(action=>"tree", hash=>$t->{'hash'},
2784                                             file_name=>"$basedir$t->{'name'}", %base_key)},
2785                              "tree");
2786                if (defined $hash_base) {
2787                        print " | " .
2788                              $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
2789                                                     file_name=>"$basedir$t->{'name'}")},
2790                                      "history");
2791                }
2792                print "</td>\n";
2793        } else {
2794                # unknown object: we can only present history for it
2795                # (this includes 'commit' object, i.e. submodule support)
2796                print "<td class=\"list\">" .
2797                      esc_path($t->{'name'}) .
2798                      "</td>\n";
2799                print "<td class=\"link\">";
2800                if (defined $hash_base) {
2801                        print $cgi->a({-href => href(action=>"history",
2802                                                     hash_base=>$hash_base,
2803                                                     file_name=>"$basedir$t->{'name'}")},
2804                                      "history");
2805                }
2806                print "</td>\n";
2807        }
2808}
2809
2810## ......................................................................
2811## functions printing large fragments of HTML
2812
2813# get pre-image filenames for merge (combined) diff
2814sub fill_from_file_info {
2815        my ($diff, @parents) = @_;
2816
2817        $diff->{'from_file'} = [ ];
2818        $diff->{'from_file'}[$diff->{'nparents'} - 1] = undef;
2819        for (my $i = 0; $i < $diff->{'nparents'}; $i++) {
2820                if ($diff->{'status'}[$i] eq 'R' ||
2821                    $diff->{'status'}[$i] eq 'C') {
2822                        $diff->{'from_file'}[$i] =
2823                                git_get_path_by_hash($parents[$i], $diff->{'from_id'}[$i]);
2824                }
2825        }
2826
2827        return $diff;
2828}
2829
2830# is current raw difftree line of file deletion
2831sub is_deleted {
2832        my $diffinfo = shift;
2833
2834        return $diffinfo->{'status_str'} =~ /D/;
2835}
2836
2837# does patch correspond to [previous] difftree raw line
2838# $diffinfo  - hashref of parsed raw diff format
2839# $patchinfo - hashref of parsed patch diff format
2840#              (the same keys as in $diffinfo)
2841sub is_patch_split {
2842        my ($diffinfo, $patchinfo) = @_;
2843
2844        return defined $diffinfo && defined $patchinfo
2845                && $diffinfo->{'to_file'} eq $patchinfo->{'to_file'};
2846}
2847
2848
2849sub git_difftree_body {
2850        my ($difftree, $hash, @parents) = @_;
2851        my ($parent) = $parents[0];
2852        my ($have_blame) = gitweb_check_feature('blame');
2853        print "<div class=\"list_head\">\n";
2854        if ($#{$difftree} > 10) {
2855                print(($#{$difftree} + 1) . " files changed:\n");
2856        }
2857        print "</div>\n";
2858
2859        print "<table class=\"" .
2860              (@parents > 1 ? "combined " : "") .
2861              "diff_tree\">\n";
2862
2863        # header only for combined diff in 'commitdiff' view
2864        my $has_header = @$difftree && @parents > 1 && $action eq 'commitdiff';
2865        if ($has_header) {
2866                # table header
2867                print "<thead><tr>\n" .
2868                       "<th></th><th></th>\n"; # filename, patchN link
2869                for (my $i = 0; $i < @parents; $i++) {
2870                        my $par = $parents[$i];
2871                        print "<th>" .
2872                              $cgi->a({-href => href(action=>"commitdiff",
2873                                                     hash=>$hash, hash_parent=>$par),
2874                                       -title => 'commitdiff to parent number ' .
2875                                                  ($i+1) . ': ' . substr($par,0,7)},
2876                                      $i+1) .
2877                              "&nbsp;</th>\n";
2878                }
2879                print "</tr></thead>\n<tbody>\n";
2880        }
2881
2882        my $alternate = 1;
2883        my $patchno = 0;
2884        foreach my $line (@{$difftree}) {
2885                my $diff = parsed_difftree_line($line);
2886
2887                if ($alternate) {
2888                        print "<tr class=\"dark\">\n";
2889                } else {
2890                        print "<tr class=\"light\">\n";
2891                }
2892                $alternate ^= 1;
2893
2894                if (exists $diff->{'nparents'}) { # combined diff
2895
2896                        fill_from_file_info($diff, @parents)
2897                                unless exists $diff->{'from_file'};
2898
2899                        if (!is_deleted($diff)) {
2900                                # file exists in the result (child) commit
2901                                print "<td>" .
2902                                      $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
2903                                                             file_name=>$diff->{'to_file'},
2904                                                             hash_base=>$hash),
2905                                              -class => "list"}, esc_path($diff->{'to_file'})) .
2906                                      "</td>\n";
2907                        } else {
2908                                print "<td>" .
2909                                      esc_path($diff->{'to_file'}) .
2910                                      "</td>\n";
2911                        }
2912
2913                        if ($action eq 'commitdiff') {
2914                                # link to patch
2915                                $patchno++;
2916                                print "<td class=\"link\">" .
2917                                      $cgi->a({-href => "#patch$patchno"}, "patch") .
2918                                      " | " .
2919                                      "</td>\n";
2920                        }
2921
2922                        my $has_history = 0;
2923                        my $not_deleted = 0;
2924                        for (my $i = 0; $i < $diff->{'nparents'}; $i++) {
2925                                my $hash_parent = $parents[$i];
2926                                my $from_hash = $diff->{'from_id'}[$i];
2927                                my $from_path = $diff->{'from_file'}[$i];
2928                                my $status = $diff->{'status'}[$i];
2929
2930                                $has_history ||= ($status ne 'A');
2931                                $not_deleted ||= ($status ne 'D');
2932
2933                                if ($status eq 'A') {
2934                                        print "<td  class=\"link\" align=\"right\"> | </td>\n";
2935                                } elsif ($status eq 'D') {
2936                                        print "<td class=\"link\">" .
2937                                              $cgi->a({-href => href(action=>"blob",
2938                                                                     hash_base=>$hash,
2939                                                                     hash=>$from_hash,
2940                                                                     file_name=>$from_path)},
2941                                                      "blob" . ($i+1)) .
2942                                              " | </td>\n";
2943                                } else {
2944                                        if ($diff->{'to_id'} eq $from_hash) {
2945                                                print "<td class=\"link nochange\">";
2946                                        } else {
2947                                                print "<td class=\"link\">";
2948                                        }
2949                                        print $cgi->a({-href => href(action=>"blobdiff",
2950                                                                     hash=>$diff->{'to_id'},
2951                                                                     hash_parent=>$from_hash,
2952                                                                     hash_base=>$hash,
2953                                                                     hash_parent_base=>$hash_parent,
2954                                                                     file_name=>$diff->{'to_file'},
2955                                                                     file_parent=>$from_path)},
2956                                                      "diff" . ($i+1)) .
2957                                              " | </td>\n";
2958                                }
2959                        }
2960
2961                        print "<td class=\"link\">";
2962                        if ($not_deleted) {
2963                                print $cgi->a({-href => href(action=>"blob",
2964                                                             hash=>$diff->{'to_id'},
2965                                                             file_name=>$diff->{'to_file'},
2966                                                             hash_base=>$hash)},
2967                                              "blob");
2968                                print " | " if ($has_history);
2969                        }
2970                        if ($has_history) {
2971                                print $cgi->a({-href => href(action=>"history",
2972                                                             file_name=>$diff->{'to_file'},
2973                                                             hash_base=>$hash)},
2974                                              "history");
2975                        }
2976                        print "</td>\n";
2977
2978                        print "</tr>\n";
2979                        next; # instead of 'else' clause, to avoid extra indent
2980                }
2981                # else ordinary diff
2982
2983                my ($to_mode_oct, $to_mode_str, $to_file_type);
2984                my ($from_mode_oct, $from_mode_str, $from_file_type);
2985                if ($diff->{'to_mode'} ne ('0' x 6)) {
2986                        $to_mode_oct = oct $diff->{'to_mode'};
2987                        if (S_ISREG($to_mode_oct)) { # only for regular file
2988                                $to_mode_str = sprintf("%04o", $to_mode_oct & 0777); # permission bits
2989                        }
2990                        $to_file_type = file_type($diff->{'to_mode'});
2991                }
2992                if ($diff->{'from_mode'} ne ('0' x 6)) {
2993                        $from_mode_oct = oct $diff->{'from_mode'};
2994                        if (S_ISREG($to_mode_oct)) { # only for regular file
2995                                $from_mode_str = sprintf("%04o", $from_mode_oct & 0777); # permission bits
2996                        }
2997                        $from_file_type = file_type($diff->{'from_mode'});
2998                }
2999
3000                if ($diff->{'status'} eq "A") { # created
3001                        my $mode_chng = "<span class=\"file_status new\">[new $to_file_type";
3002                        $mode_chng   .= " with mode: $to_mode_str" if $to_mode_str;
3003                        $mode_chng   .= "]</span>";
3004                        print "<td>";
3005                        print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
3006                                                     hash_base=>$hash, file_name=>$diff->{'file'}),
3007                                      -class => "list"}, esc_path($diff->{'file'}));
3008                        print "</td>\n";
3009                        print "<td>$mode_chng</td>\n";
3010                        print "<td class=\"link\">";
3011                        if ($action eq 'commitdiff') {
3012                                # link to patch
3013                                $patchno++;
3014                                print $cgi->a({-href => "#patch$patchno"}, "patch");
3015                                print " | ";
3016                        }
3017                        print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
3018                                                     hash_base=>$hash, file_name=>$diff->{'file'})},
3019                                      "blob");
3020                        print "</td>\n";
3021
3022                } elsif ($diff->{'status'} eq "D") { # deleted
3023                        my $mode_chng = "<span class=\"file_status deleted\">[deleted $from_file_type]</span>";
3024                        print "<td>";
3025                        print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'from_id'},
3026                                                     hash_base=>$parent, file_name=>$diff->{'file'}),
3027                                       -class => "list"}, esc_path($diff->{'file'}));
3028                        print "</td>\n";
3029                        print "<td>$mode_chng</td>\n";
3030                        print "<td class=\"link\">";
3031                        if ($action eq 'commitdiff') {
3032                                # link to patch
3033                                $patchno++;
3034                                print $cgi->a({-href => "#patch$patchno"}, "patch");
3035                                print " | ";
3036                        }
3037                        print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'from_id'},
3038                                                     hash_base=>$parent, file_name=>$diff->{'file'})},
3039                                      "blob") . " | ";
3040                        if ($have_blame) {
3041                                print $cgi->a({-href => href(action=>"blame", hash_base=>$parent,
3042                                                             file_name=>$diff->{'file'})},
3043                                              "blame") . " | ";
3044                        }
3045                        print $cgi->a({-href => href(action=>"history", hash_base=>$parent,
3046                                                     file_name=>$diff->{'file'})},
3047                                      "history");
3048                        print "</td>\n";
3049
3050                } elsif ($diff->{'status'} eq "M" || $diff->{'status'} eq "T") { # modified, or type changed
3051                        my $mode_chnge = "";
3052                        if ($diff->{'from_mode'} != $diff->{'to_mode'}) {
3053                                $mode_chnge = "<span class=\"file_status mode_chnge\">[changed";
3054                                if ($from_file_type ne $to_file_type) {
3055                                        $mode_chnge .= " from $from_file_type to $to_file_type";
3056                                }
3057                                if (($from_mode_oct & 0777) != ($to_mode_oct & 0777)) {
3058                                        if ($from_mode_str && $to_mode_str) {
3059                                                $mode_chnge .= " mode: $from_mode_str->$to_mode_str";
3060                                        } elsif ($to_mode_str) {
3061                                                $mode_chnge .= " mode: $to_mode_str";
3062                                        }
3063                                }
3064                                $mode_chnge .= "]</span>\n";
3065                        }
3066                        print "<td>";
3067                        print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
3068                                                     hash_base=>$hash, file_name=>$diff->{'file'}),
3069                                      -class => "list"}, esc_path($diff->{'file'}));
3070                        print "</td>\n";
3071                        print "<td>$mode_chnge</td>\n";
3072                        print "<td class=\"link\">";
3073                        if ($action eq 'commitdiff') {
3074                                # link to patch
3075                                $patchno++;
3076                                print $cgi->a({-href => "#patch$patchno"}, "patch") .
3077                                      " | ";
3078                        } elsif ($diff->{'to_id'} ne $diff->{'from_id'}) {
3079                                # "commit" view and modified file (not onlu mode changed)
3080                                print $cgi->a({-href => href(action=>"blobdiff",
3081                                                             hash=>$diff->{'to_id'}, hash_parent=>$diff->{'from_id'},
3082                                                             hash_base=>$hash, hash_parent_base=>$parent,
3083                                                             file_name=>$diff->{'file'})},
3084                                              "diff") .
3085                                      " | ";
3086                        }
3087                        print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
3088                                                     hash_base=>$hash, file_name=>$diff->{'file'})},
3089                                       "blob") . " | ";
3090                        if ($have_blame) {
3091                                print $cgi->a({-href => href(action=>"blame", hash_base=>$hash,
3092                                                             file_name=>$diff->{'file'})},
3093                                              "blame") . " | ";
3094                        }
3095                        print $cgi->a({-href => href(action=>"history", hash_base=>$hash,
3096                                                     file_name=>$diff->{'file'})},
3097                                      "history");
3098                        print "</td>\n";
3099
3100                } elsif ($diff->{'status'} eq "R" || $diff->{'status'} eq "C") { # renamed or copied
3101                        my %status_name = ('R' => 'moved', 'C' => 'copied');
3102                        my $nstatus = $status_name{$diff->{'status'}};
3103                        my $mode_chng = "";
3104                        if ($diff->{'from_mode'} != $diff->{'to_mode'}) {
3105                                # mode also for directories, so we cannot use $to_mode_str
3106                                $mode_chng = sprintf(", mode: %04o", $to_mode_oct & 0777);
3107                        }
3108                        print "<td>" .
3109                              $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
3110                                                     hash=>$diff->{'to_id'}, file_name=>$diff->{'to_file'}),
3111                                      -class => "list"}, esc_path($diff->{'to_file'})) . "</td>\n" .
3112                              "<td><span class=\"file_status $nstatus\">[$nstatus from " .
3113                              $cgi->a({-href => href(action=>"blob", hash_base=>$parent,
3114                                                     hash=>$diff->{'from_id'}, file_name=>$diff->{'from_file'}),
3115                                      -class => "list"}, esc_path($diff->{'from_file'})) .
3116                              " with " . (int $diff->{'similarity'}) . "% similarity$mode_chng]</span></td>\n" .
3117                              "<td class=\"link\">";
3118                        if ($action eq 'commitdiff') {
3119                                # link to patch
3120                                $patchno++;
3121                                print $cgi->a({-href => "#patch$patchno"}, "patch") .
3122                                      " | ";
3123                        } elsif ($diff->{'to_id'} ne $diff->{'from_id'}) {
3124                                # "commit" view and modified file (not only pure rename or copy)
3125                                print $cgi->a({-href => href(action=>"blobdiff",
3126                                                             hash=>$diff->{'to_id'}, hash_parent=>$diff->{'from_id'},
3127                                                             hash_base=>$hash, hash_parent_base=>$parent,
3128                                                             file_name=>$diff->{'to_file'}, file_parent=>$diff->{'from_file'})},
3129                                              "diff") .
3130                                      " | ";
3131                        }
3132                        print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
3133                                                     hash_base=>$parent, file_name=>$diff->{'to_file'})},
3134                                      "blob") . " | ";
3135                        if ($have_blame) {
3136                                print $cgi->a({-href => href(action=>"blame", hash_base=>$hash,
3137                                                             file_name=>$diff->{'to_file'})},
3138                                              "blame") . " | ";
3139                        }
3140                        print $cgi->a({-href => href(action=>"history", hash_base=>$hash,
3141                                                    file_name=>$diff->{'to_file'})},
3142                                      "history");
3143                        print "</td>\n";
3144
3145                } # we should not encounter Unmerged (U) or Unknown (X) status
3146                print "</tr>\n";
3147        }
3148        print "</tbody>" if $has_header;
3149        print "</table>\n";
3150}
3151
3152sub git_patchset_body {
3153        my ($fd, $difftree, $hash, @hash_parents) = @_;
3154        my ($hash_parent) = $hash_parents[0];
3155
3156        my $is_combined = (@hash_parents > 1);
3157        my $patch_idx = 0;
3158        my $patch_number = 0;
3159        my $patch_line;
3160        my $diffinfo;
3161        my $to_name;
3162        my (%from, %to);
3163
3164        print "<div class=\"patchset\">\n";
3165
3166        # skip to first patch
3167        while ($patch_line = <$fd>) {
3168                chomp $patch_line;
3169
3170                last if ($patch_line =~ m/^diff /);
3171        }
3172
3173 PATCH:
3174        while ($patch_line) {
3175
3176                # parse "git diff" header line
3177                if ($patch_line =~ m/^diff --git (\"(?:[^\\\"]*(?:\\.[^\\\"]*)*)\"|[^ "]*) (.*)$/) {
3178                        # $1 is from_name, which we do not use
3179                        $to_name = unquote($2);
3180                        $to_name =~ s!^b/!!;
3181                } elsif ($patch_line =~ m/^diff --(cc|combined) ("?.*"?)$/) {
3182                        # $1 is 'cc' or 'combined', which we do not use
3183                        $to_name = unquote($2);
3184                } else {
3185                        $to_name = undef;
3186                }
3187
3188                # check if current patch belong to current raw line
3189                # and parse raw git-diff line if needed
3190                if (is_patch_split($diffinfo, { 'to_file' => $to_name })) {
3191                        # this is continuation of a split patch
3192                        print "<div class=\"patch cont\">\n";
3193                } else {
3194                        # advance raw git-diff output if needed
3195                        $patch_idx++ if defined $diffinfo;
3196
3197                        # read and prepare patch information
3198                        $diffinfo = parsed_difftree_line($difftree->[$patch_idx]);
3199
3200                        # compact combined diff output can have some patches skipped
3201                        # find which patch (using pathname of result) we are at now;
3202                        if ($is_combined) {
3203                                while ($to_name ne $diffinfo->{'to_file'}) {
3204                                        print "<div class=\"patch\" id=\"patch". ($patch_idx+1) ."\">\n" .
3205                                              format_diff_cc_simplified($diffinfo, @hash_parents) .
3206                                              "</div>\n";  # class="patch"
3207
3208                                        $patch_idx++;
3209                                        $patch_number++;
3210
3211                                        last if $patch_idx > $#$difftree;
3212                                        $diffinfo = parsed_difftree_line($difftree->[$patch_idx]);
3213                                }
3214                        }
3215
3216                        # modifies %from, %to hashes
3217                        parse_from_to_diffinfo($diffinfo, \%from, \%to, @hash_parents);
3218
3219                        # this is first patch for raw difftree line with $patch_idx index
3220                        # we index @$difftree array from 0, but number patches from 1
3221                        print "<div class=\"patch\" id=\"patch". ($patch_idx+1) ."\">\n";
3222                }
3223
3224                # git diff header
3225                #assert($patch_line =~ m/^diff /) if DEBUG;
3226                #assert($patch_line !~ m!$/$!) if DEBUG; # is chomp-ed
3227                $patch_number++;
3228                # print "git diff" header
3229                print format_git_diff_header_line($patch_line, $diffinfo,
3230                                                  \%from, \%to);
3231
3232                # print extended diff header
3233                print "<div class=\"diff extended_header\">\n";
3234        EXTENDED_HEADER:
3235                while ($patch_line = <$fd>) {
3236                        chomp $patch_line;
3237
3238                        last EXTENDED_HEADER if ($patch_line =~ m/^--- |^diff /);
3239
3240                        print format_extended_diff_header_line($patch_line, $diffinfo,
3241                                                               \%from, \%to);
3242                }
3243                print "</div>\n"; # class="diff extended_header"
3244
3245                # from-file/to-file diff header
3246                if (! $patch_line) {
3247                        print "</div>\n"; # class="patch"
3248                        last PATCH;
3249                }
3250                next PATCH if ($patch_line =~ m/^diff /);
3251                #assert($patch_line =~ m/^---/) if DEBUG;
3252
3253                my $last_patch_line = $patch_line;
3254                $patch_line = <$fd>;
3255                chomp $patch_line;
3256                #assert($patch_line =~ m/^\+\+\+/) if DEBUG;
3257
3258                print format_diff_from_to_header($last_patch_line, $patch_line,
3259                                                 $diffinfo, \%from, \%to,
3260                                                 @hash_parents);
3261
3262                # the patch itself
3263        LINE:
3264                while ($patch_line = <$fd>) {
3265                        chomp $patch_line;
3266
3267                        next PATCH if ($patch_line =~ m/^diff /);
3268
3269                        print format_diff_line($patch_line, \%from, \%to);
3270                }
3271
3272        } continue {
3273                print "</div>\n"; # class="patch"
3274        }
3275
3276        # for compact combined (--cc) format, with chunk and patch simpliciaction
3277        # patchset might be empty, but there might be unprocessed raw lines
3278        for (++$patch_idx if $patch_number > 0;
3279             $patch_idx < @$difftree;
3280             ++$patch_idx) {
3281                # read and prepare patch information
3282                $diffinfo = parsed_difftree_line($difftree->[$patch_idx]);
3283
3284                # generate anchor for "patch" links in difftree / whatchanged part
3285                print "<div class=\"patch\" id=\"patch". ($patch_idx+1) ."\">\n" .
3286                      format_diff_cc_simplified($diffinfo, @hash_parents) .
3287                      "</div>\n";  # class="patch"
3288
3289                $patch_number++;
3290        }
3291
3292        if ($patch_number == 0) {
3293                if (@hash_parents > 1) {
3294                        print "<div class=\"diff nodifferences\">Trivial merge</div>\n";
3295                } else {
3296                        print "<div class=\"diff nodifferences\">No differences found</div>\n";
3297                }
3298        }
3299
3300        print "</div>\n"; # class="patchset"
3301}
3302
3303# . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3304
3305sub git_project_list_body {
3306        my ($projlist, $order, $from, $to, $extra, $no_header) = @_;
3307
3308        my ($check_forks) = gitweb_check_feature('forks');
3309
3310        my @projects;
3311        foreach my $pr (@$projlist) {
3312                my (@aa) = git_get_last_activity($pr->{'path'});
3313                unless (@aa) {
3314                        next;
3315                }
3316                ($pr->{'age'}, $pr->{'age_string'}) = @aa;
3317                if (!defined $pr->{'descr'}) {
3318                        my $descr = git_get_project_description($pr->{'path'}) || "";
3319                        $pr->{'descr_long'} = to_utf8($descr);
3320                        $pr->{'descr'} = chop_str($descr, $projects_list_description_width, 5);
3321                }
3322                if (!defined $pr->{'owner'}) {
3323                        $pr->{'owner'} = git_get_project_owner("$pr->{'path'}") || "";
3324                }
3325                if ($check_forks) {
3326                        my $pname = $pr->{'path'};
3327                        if (($pname =~ s/\.git$//) &&
3328                            ($pname !~ /\/$/) &&
3329                            (-d "$projectroot/$pname")) {
3330                                $pr->{'forks'} = "-d $projectroot/$pname";
3331                        }
3332                        else {
3333                                $pr->{'forks'} = 0;
3334                        }
3335                }
3336                push @projects, $pr;
3337        }
3338
3339        $order ||= $default_projects_order;
3340        $from = 0 unless defined $from;
3341        $to = $#projects if (!defined $to || $#projects < $to);
3342
3343        print "<table class=\"project_list\">\n";
3344        unless ($no_header) {
3345                print "<tr>\n";
3346                if ($check_forks) {
3347                        print "<th></th>\n";
3348                }
3349                if ($order eq "project") {
3350                        @projects = sort {$a->{'path'} cmp $b->{'path'}} @projects;
3351                        print "<th>Project</th>\n";
3352                } else {
3353                        print "<th>" .
3354                              $cgi->a({-href => href(project=>undef, order=>'project'),
3355                                       -class => "header"}, "Project") .
3356                              "</th>\n";
3357                }
3358                if ($order eq "descr") {
3359                        @projects = sort {$a->{'descr'} cmp $b->{'descr'}} @projects;
3360                        print "<th>Description</th>\n";
3361                } else {
3362                        print "<th>" .
3363                              $cgi->a({-href => href(project=>undef, order=>'descr'),
3364                                       -class => "header"}, "Description") .
3365                              "</th>\n";
3366                }
3367                if ($order eq "owner") {
3368                        @projects = sort {$a->{'owner'} cmp $b->{'owner'}} @projects;
3369                        print "<th>Owner</th>\n";
3370                } else {
3371                        print "<th>" .
3372                              $cgi->a({-href => href(project=>undef, order=>'owner'),
3373                                       -class => "header"}, "Owner") .
3374                              "</th>\n";
3375                }
3376                if ($order eq "age") {
3377                        @projects = sort {$a->{'age'} <=> $b->{'age'}} @projects;
3378                        print "<th>Last Change</th>\n";
3379                } else {
3380                        print "<th>" .
3381                              $cgi->a({-href => href(project=>undef, order=>'age'),
3382                                       -class => "header"}, "Last Change") .
3383                              "</th>\n";
3384                }
3385                print "<th></th>\n" .
3386                      "</tr>\n";
3387        }
3388        my $alternate = 1;
3389        for (my $i = $from; $i <= $to; $i++) {
3390                my $pr = $projects[$i];
3391                if ($alternate) {
3392                        print "<tr class=\"dark\">\n";
3393                } else {
3394                        print "<tr class=\"light\">\n";
3395                }
3396                $alternate ^= 1;
3397                if ($check_forks) {
3398                        print "<td>";
3399                        if ($pr->{'forks'}) {
3400                                print "<!-- $pr->{'forks'} -->\n";
3401                                print $cgi->a({-href => href(project=>$pr->{'path'}, action=>"forks")}, "+");
3402                        }
3403                        print "</td>\n";
3404                }
3405                print "<td>" . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary"),
3406                                        -class => "list"}, esc_html($pr->{'path'})) . "</td>\n" .
3407                      "<td>" . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary"),
3408                                        -class => "list", -title => $pr->{'descr_long'}},
3409                                        esc_html($pr->{'descr'})) . "</td>\n" .
3410                      "<td><i>" . chop_and_escape_str($pr->{'owner'}, 15) . "</i></td>\n";
3411                print "<td class=\"". age_class($pr->{'age'}) . "\">" .
3412                      (defined $pr->{'age_string'} ? $pr->{'age_string'} : "No commits") . "</td>\n" .
3413                      "<td class=\"link\">" .
3414                      $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary")}, "summary")   . " | " .
3415                      $cgi->a({-href => href(project=>$pr->{'path'}, action=>"shortlog")}, "shortlog") . " | " .
3416                      $cgi->a({-href => href(project=>$pr->{'path'}, action=>"log")}, "log") . " | " .
3417                      $cgi->a({-href => href(project=>$pr->{'path'}, action=>"tree")}, "tree") .
3418                      ($pr->{'forks'} ? " | " . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"forks")}, "forks") : '') .
3419                      "</td>\n" .
3420                      "</tr>\n";
3421        }
3422        if (defined $extra) {
3423                print "<tr>\n";
3424                if ($check_forks) {
3425                        print "<td></td>\n";
3426                }
3427                print "<td colspan=\"5\">$extra</td>\n" .
3428                      "</tr>\n";
3429        }
3430        print "</table>\n";
3431}
3432
3433sub git_shortlog_body {
3434        # uses global variable $project
3435        my ($commitlist, $from, $to, $refs, $extra) = @_;
3436
3437        $from = 0 unless defined $from;
3438        $to = $#{$commitlist} if (!defined $to || $#{$commitlist} < $to);
3439
3440        print "<table class=\"shortlog\" cellspacing=\"0\">\n";
3441        my $alternate = 1;
3442        for (my $i = $from; $i <= $to; $i++) {
3443                my %co = %{$commitlist->[$i]};
3444                my $commit = $co{'id'};
3445                my $ref = format_ref_marker($refs, $commit);
3446                if ($alternate) {
3447                        print "<tr class=\"dark\">\n";
3448                } else {
3449                        print "<tr class=\"light\">\n";
3450                }
3451                $alternate ^= 1;
3452                my $author = chop_and_escape_str($co{'author_name'}, 10);
3453                # git_summary() used print "<td><i>$co{'age_string'}</i></td>\n" .
3454                print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
3455                      "<td><i>" . $author . "</i></td>\n" .
3456                      "<td>";
3457                print format_subject_html($co{'title'}, $co{'title_short'},
3458                                          href(action=>"commit", hash=>$commit), $ref);
3459                print "</td>\n" .
3460                      "<td class=\"link\">" .
3461                      $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") . " | " .
3462                      $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") . " | " .
3463                      $cgi->a({-href => href(action=>"tree", hash=>$commit, hash_base=>$commit)}, "tree");
3464                my $snapshot_links = format_snapshot_links($commit);
3465                if (defined $snapshot_links) {
3466                        print " | " . $snapshot_links;
3467                }
3468                print "</td>\n" .
3469                      "</tr>\n";
3470        }
3471        if (defined $extra) {
3472                print "<tr>\n" .
3473                      "<td colspan=\"4\">$extra</td>\n" .
3474                      "</tr>\n";
3475        }
3476        print "</table>\n";
3477}
3478
3479sub git_history_body {
3480        # Warning: assumes constant type (blob or tree) during history
3481        my ($commitlist, $from, $to, $refs, $hash_base, $ftype, $extra) = @_;
3482
3483        $from = 0 unless defined $from;
3484        $to = $#{$commitlist} unless (defined $to && $to <= $#{$commitlist});
3485
3486        print "<table class=\"history\" cellspacing=\"0\">\n";
3487        my $alternate = 1;
3488        for (my $i = $from; $i <= $to; $i++) {
3489                my %co = %{$commitlist->[$i]};
3490                if (!%co) {
3491                        next;
3492                }
3493                my $commit = $co{'id'};
3494
3495                my $ref = format_ref_marker($refs, $commit);
3496
3497                if ($alternate) {
3498                        print "<tr class=\"dark\">\n";
3499                } else {
3500                        print "<tr class=\"light\">\n";
3501                }
3502                $alternate ^= 1;
3503        # shortlog uses      chop_str($co{'author_name'}, 10)
3504                my $author = chop_and_escape_str($co{'author_name'}, 15, 3);
3505                print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
3506                      "<td><i>" . $author . "</i></td>\n" .
3507                      "<td>";
3508                # originally git_history used chop_str($co{'title'}, 50)
3509                print format_subject_html($co{'title'}, $co{'title_short'},
3510                                          href(action=>"commit", hash=>$commit), $ref);
3511                print "</td>\n" .
3512                      "<td class=\"link\">" .
3513                      $cgi->a({-href => href(action=>$ftype, hash_base=>$commit, file_name=>$file_name)}, $ftype) . " | " .
3514                      $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff");
3515
3516                if ($ftype eq 'blob') {
3517                        my $blob_current = git_get_hash_by_path($hash_base, $file_name);
3518                        my $blob_parent  = git_get_hash_by_path($commit, $file_name);
3519                        if (defined $blob_current && defined $blob_parent &&
3520                                        $blob_current ne $blob_parent) {
3521                                print " | " .
3522                                        $cgi->a({-href => href(action=>"blobdiff",
3523                                                               hash=>$blob_current, hash_parent=>$blob_parent,
3524                                                               hash_base=>$hash_base, hash_parent_base=>$commit,
3525                                                               file_name=>$file_name)},
3526                                                "diff to current");
3527                        }
3528                }
3529                print "</td>\n" .
3530                      "</tr>\n";
3531        }
3532        if (defined $extra) {
3533                print "<tr>\n" .
3534                      "<td colspan=\"4\">$extra</td>\n" .
3535                      "</tr>\n";
3536        }
3537        print "</table>\n";
3538}
3539
3540sub git_tags_body {
3541        # uses global variable $project
3542        my ($taglist, $from, $to, $extra) = @_;
3543        $from = 0 unless defined $from;
3544        $to = $#{$taglist} if (!defined $to || $#{$taglist} < $to);
3545
3546        print "<table class=\"tags\" cellspacing=\"0\">\n";
3547        my $alternate = 1;
3548        for (my $i = $from; $i <= $to; $i++) {
3549                my $entry = $taglist->[$i];
3550                my %tag = %$entry;
3551                my $comment = $tag{'subject'};
3552                my $comment_short;
3553                if (defined $comment) {
3554                        $comment_short = chop_str($comment, 30, 5);
3555                }
3556                if ($alternate) {
3557                        print "<tr class=\"dark\">\n";
3558                } else {
3559                        print "<tr class=\"light\">\n";
3560                }
3561                $alternate ^= 1;
3562                if (defined $tag{'age'}) {
3563                        print "<td><i>$tag{'age'}</i></td>\n";
3564                } else {
3565                        print "<td></td>\n";
3566                }
3567                print "<td>" .
3568                      $cgi->a({-href => href(action=>$tag{'reftype'}, hash=>$tag{'refid'}),
3569                               -class => "list name"}, esc_html($tag{'name'})) .
3570                      "</td>\n" .
3571                      "<td>";
3572                if (defined $comment) {
3573                        print format_subject_html($comment, $comment_short,
3574                                                  href(action=>"tag", hash=>$tag{'id'}));
3575                }
3576                print "</td>\n" .
3577                      "<td class=\"selflink\">";
3578                if ($tag{'type'} eq "tag") {
3579                        print $cgi->a({-href => href(action=>"tag", hash=>$tag{'id'})}, "tag");
3580                } else {
3581                        print "&nbsp;";
3582                }
3583                print "</td>\n" .
3584                      "<td class=\"link\">" . " | " .
3585                      $cgi->a({-href => href(action=>$tag{'reftype'}, hash=>$tag{'refid'})}, $tag{'reftype'});
3586                if ($tag{'reftype'} eq "commit") {
3587                        print " | " . $cgi->a({-href => href(action=>"shortlog", hash=>$tag{'name'})}, "shortlog") .
3588                              " | " . $cgi->a({-href => href(action=>"log", hash=>$tag{'name'})}, "log");
3589                } elsif ($tag{'reftype'} eq "blob") {
3590                        print " | " . $cgi->a({-href => href(action=>"blob_plain", hash=>$tag{'refid'})}, "raw");
3591                }
3592                print "</td>\n" .
3593                      "</tr>";
3594        }
3595        if (defined $extra) {
3596                print "<tr>\n" .
3597                      "<td colspan=\"5\">$extra</td>\n" .
3598                      "</tr>\n";
3599        }
3600        print "</table>\n";
3601}
3602
3603sub git_heads_body {
3604        # uses global variable $project
3605        my ($headlist, $head, $from, $to, $extra) = @_;
3606        $from = 0 unless defined $from;
3607        $to = $#{$headlist} if (!defined $to || $#{$headlist} < $to);
3608
3609        print "<table class=\"heads\" cellspacing=\"0\">\n";
3610        my $alternate = 1;
3611        for (my $i = $from; $i <= $to; $i++) {
3612                my $entry = $headlist->[$i];
3613                my %ref = %$entry;
3614                my $curr = $ref{'id'} eq $head;
3615                if ($alternate) {
3616                        print "<tr class=\"dark\">\n";
3617                } else {
3618                        print "<tr class=\"light\">\n";
3619                }
3620                $alternate ^= 1;
3621                print "<td><i>$ref{'age'}</i></td>\n" .
3622                      ($curr ? "<td class=\"current_head\">" : "<td>") .
3623                      $cgi->a({-href => href(action=>"shortlog", hash=>$ref{'name'}),
3624                               -class => "list name"},esc_html($ref{'name'})) .
3625                      "</td>\n" .
3626                      "<td class=\"link\">" .
3627                      $cgi->a({-href => href(action=>"shortlog", hash=>$ref{'name'})}, "shortlog") . " | " .
3628                      $cgi->a({-href => href(action=>"log", hash=>$ref{'name'})}, "log") . " | " .
3629                      $cgi->a({-href => href(action=>"tree", hash=>$ref{'name'}, hash_base=>$ref{'name'})}, "tree") .
3630                      "</td>\n" .
3631                      "</tr>";
3632        }
3633        if (defined $extra) {
3634                print "<tr>\n" .
3635                      "<td colspan=\"3\">$extra</td>\n" .
3636                      "</tr>\n";
3637        }
3638        print "</table>\n";
3639}
3640
3641sub git_search_grep_body {
3642        my ($commitlist, $from, $to, $extra) = @_;
3643        $from = 0 unless defined $from;
3644        $to = $#{$commitlist} if (!defined $to || $#{$commitlist} < $to);
3645
3646        print "<table class=\"grep\" cellspacing=\"0\">\n";
3647        my $alternate = 1;
3648        for (my $i = $from; $i <= $to; $i++) {
3649                my %co = %{$commitlist->[$i]};
3650                if (!%co) {
3651                        next;
3652                }
3653                my $commit = $co{'id'};
3654                if ($alternate) {
3655                        print "<tr class=\"dark\">\n";
3656                } else {
3657                        print "<tr class=\"light\">\n";
3658                }
3659                $alternate ^= 1;
3660                my $author = chop_and_escape_str($co{'author_name'}, 15, 5);
3661                print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
3662                      "<td><i>" . $author . "</i></td>\n" .
3663                      "<td>" .
3664                      $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}), -class => "list subject"},
3665                               chop_and_escape_str($co{'title'}, 50) . "<br/>");
3666                my $comment = $co{'comment'};
3667                foreach my $line (@$comment) {
3668                        if ($line =~ m/^(.*)($search_regexp)(.*)$/i) {
3669                                my $lead = esc_html($1) || "";
3670                                $lead = chop_str($lead, 30, 10);
3671                                my $match = esc_html($2) || "";
3672                                my $trail = esc_html($3) || "";
3673                                $trail = chop_str($trail, 30, 10);
3674                                my $text = "$lead<span class=\"match\">$match</span>$trail";
3675                                print chop_str($text, 80, 5) . "<br/>\n";
3676                        }
3677                }
3678                print "</td>\n" .
3679                      "<td class=\"link\">" .
3680                      $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})}, "commit") .
3681                      " | " .
3682                      $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$co{'id'})}, "tree");
3683                print "</td>\n" .
3684                      "</tr>\n";
3685        }
3686        if (defined $extra) {
3687                print "<tr>\n" .
3688                      "<td colspan=\"3\">$extra</td>\n" .
3689                      "</tr>\n";
3690        }
3691        print "</table>\n";
3692}
3693
3694## ======================================================================
3695## ======================================================================
3696## actions
3697
3698sub git_project_list {
3699        my $order = $cgi->param('o');
3700        if (defined $order && $order !~ m/none|project|descr|owner|age/) {
3701                die_error(undef, "Unknown order parameter");
3702        }
3703
3704        my @list = git_get_projects_list();
3705        if (!@list) {
3706                die_error(undef, "No projects found");
3707        }
3708
3709        git_header_html();
3710        if (-f $home_text) {
3711                print "<div class=\"index_include\">\n";
3712                open (my $fd, $home_text);
3713                print <$fd>;
3714                close $fd;
3715                print "</div>\n";
3716        }
3717        git_project_list_body(\@list, $order);
3718        git_footer_html();
3719}
3720
3721sub git_forks {
3722        my $order = $cgi->param('o');
3723        if (defined $order && $order !~ m/none|project|descr|owner|age/) {
3724                die_error(undef, "Unknown order parameter");
3725        }
3726
3727        my @list = git_get_projects_list($project);
3728        if (!@list) {
3729                die_error(undef, "No forks found");
3730        }
3731
3732        git_header_html();
3733        git_print_page_nav('','');
3734        git_print_header_div('summary', "$project forks");
3735        git_project_list_body(\@list, $order);
3736        git_footer_html();
3737}
3738
3739sub git_project_index {
3740        my @projects = git_get_projects_list($project);
3741
3742        print $cgi->header(
3743                -type => 'text/plain',
3744                -charset => 'utf-8',
3745                -content_disposition => 'inline; filename="index.aux"');
3746
3747        foreach my $pr (@projects) {
3748                if (!exists $pr->{'owner'}) {
3749                        $pr->{'owner'} = git_get_project_owner("$pr->{'path'}");
3750                }
3751
3752                my ($path, $owner) = ($pr->{'path'}, $pr->{'owner'});
3753                # quote as in CGI::Util::encode, but keep the slash, and use '+' for ' '
3754                $path  =~ s/([^a-zA-Z0-9_.\-\/ ])/sprintf("%%%02X", ord($1))/eg;
3755                $owner =~ s/([^a-zA-Z0-9_.\-\/ ])/sprintf("%%%02X", ord($1))/eg;
3756                $path  =~ s/ /\+/g;
3757                $owner =~ s/ /\+/g;
3758
3759                print "$path $owner\n";
3760        }
3761}
3762
3763sub git_summary {
3764        my $descr = git_get_project_description($project) || "none";
3765        my %co = parse_commit("HEAD");
3766        my %cd = %co ? parse_date($co{'committer_epoch'}, $co{'committer_tz'}) : ();
3767        my $head = $co{'id'};
3768
3769        my $owner = git_get_project_owner($project);
3770
3771        my $refs = git_get_references();
3772        # These get_*_list functions return one more to allow us to see if
3773        # there are more ...
3774        my @taglist  = git_get_tags_list(16);
3775        my @headlist = git_get_heads_list(16);
3776        my @forklist;
3777        my ($check_forks) = gitweb_check_feature('forks');
3778
3779        if ($check_forks) {
3780                @forklist = git_get_projects_list($project);
3781        }
3782
3783        git_header_html();
3784        git_print_page_nav('summary','', $head);
3785
3786        print "<div class=\"title\">&nbsp;</div>\n";
3787        print "<table cellspacing=\"0\">\n" .
3788              "<tr><td>description</td><td>" . esc_html($descr) . "</td></tr>\n" .
3789              "<tr><td>owner</td><td>" . esc_html($owner) . "</td></tr>\n";
3790        if (defined $cd{'rfc2822'}) {
3791                print "<tr><td>last change</td><td>$cd{'rfc2822'}</td></tr>\n";
3792        }
3793
3794        # use per project git URL list in $projectroot/$project/cloneurl
3795        # or make project git URL from git base URL and project name
3796        my $url_tag = "URL";
3797        my @url_list = git_get_project_url_list($project);
3798        @url_list = map { "$_/$project" } @git_base_url_list unless @url_list;
3799        foreach my $git_url (@url_list) {
3800                next unless $git_url;
3801                print "<tr><td>$url_tag</td><td>$git_url</td></tr>\n";
3802                $url_tag = "";
3803        }
3804        print "</table>\n";
3805
3806        if (-s "$projectroot/$project/README.html") {
3807                if (open my $fd, "$projectroot/$project/README.html") {
3808                        print "<div class=\"title\">readme</div>\n";
3809                        print $_ while (<$fd>);
3810                        close $fd;
3811                }
3812        }
3813
3814        # we need to request one more than 16 (0..15) to check if
3815        # those 16 are all
3816        my @commitlist = $head ? parse_commits($head, 17) : ();
3817        if (@commitlist) {
3818                git_print_header_div('shortlog');
3819                git_shortlog_body(\@commitlist, 0, 15, $refs,
3820                                  $#commitlist <=  15 ? undef :
3821                                  $cgi->a({-href => href(action=>"shortlog")}, "..."));
3822        }
3823
3824        if (@taglist) {
3825                git_print_header_div('tags');
3826                git_tags_body(\@taglist, 0, 15,
3827                              $#taglist <=  15 ? undef :
3828                              $cgi->a({-href => href(action=>"tags")}, "..."));
3829        }
3830
3831        if (@headlist) {
3832                git_print_header_div('heads');
3833                git_heads_body(\@headlist, $head, 0, 15,
3834                               $#headlist <= 15 ? undef :
3835                               $cgi->a({-href => href(action=>"heads")}, "..."));
3836        }
3837
3838        if (@forklist) {
3839                git_print_header_div('forks');
3840                git_project_list_body(\@forklist, undef, 0, 15,
3841                                      $#forklist <= 15 ? undef :
3842                                      $cgi->a({-href => href(action=>"forks")}, "..."),
3843                                      'noheader');
3844        }
3845
3846        git_footer_html();
3847}
3848
3849sub git_tag {
3850        my $head = git_get_head_hash($project);
3851        git_header_html();
3852        git_print_page_nav('','', $head,undef,$head);
3853        my %tag = parse_tag($hash);
3854
3855        if (! %tag) {
3856                die_error(undef, "Unknown tag object");
3857        }
3858
3859        git_print_header_div('commit', esc_html($tag{'name'}), $hash);
3860        print "<div class=\"title_text\">\n" .
3861              "<table cellspacing=\"0\">\n" .
3862              "<tr>\n" .
3863              "<td>object</td>\n" .
3864              "<td>" . $cgi->a({-class => "list", -href => href(action=>$tag{'type'}, hash=>$tag{'object'})},
3865                               $tag{'object'}) . "</td>\n" .
3866              "<td class=\"link\">" . $cgi->a({-href => href(action=>$tag{'type'}, hash=>$tag{'object'})},
3867                                              $tag{'type'}) . "</td>\n" .
3868              "</tr>\n";
3869        if (defined($tag{'author'})) {
3870                my %ad = parse_date($tag{'epoch'}, $tag{'tz'});
3871                print "<tr><td>author</td><td>" . esc_html($tag{'author'}) . "</td></tr>\n";
3872                print "<tr><td></td><td>" . $ad{'rfc2822'} .
3873                        sprintf(" (%02d:%02d %s)", $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'}) .
3874                        "</td></tr>\n";
3875        }
3876        print "</table>\n\n" .
3877              "</div>\n";
3878        print "<div class=\"page_body\">";
3879        my $comment = $tag{'comment'};
3880        foreach my $line (@$comment) {
3881                chomp $line;
3882                print esc_html($line, -nbsp=>1) . "<br/>\n";
3883        }
3884        print "</div>\n";
3885        git_footer_html();
3886}
3887
3888sub git_blame2 {
3889        my $fd;
3890        my $ftype;
3891
3892        my ($have_blame) = gitweb_check_feature('blame');
3893        if (!$have_blame) {
3894                die_error('403 Permission denied', "Permission denied");
3895        }
3896        die_error('404 Not Found', "File name not defined") if (!$file_name);
3897        $hash_base ||= git_get_head_hash($project);
3898        die_error(undef, "Couldn't find base commit") unless ($hash_base);
3899        my %co = parse_commit($hash_base)
3900                or die_error(undef, "Reading commit failed");
3901        if (!defined $hash) {
3902                $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
3903                        or die_error(undef, "Error looking up file");
3904        }
3905        $ftype = git_get_type($hash);
3906        if ($ftype !~ "blob") {
3907                die_error('400 Bad Request', "Object is not a blob");
3908        }
3909        open ($fd, "-|", git_cmd(), "blame", '-p', '--',
3910              $file_name, $hash_base)
3911                or die_error(undef, "Open git-blame failed");
3912        git_header_html();
3913        my $formats_nav =
3914                $cgi->a({-href => href(action=>"blob", -replay=>1)},
3915                        "blob") .
3916                " | " .
3917                $cgi->a({-href => href(action=>"history", -replay=>1)},
3918                        "history") .
3919                " | " .
3920                $cgi->a({-href => href(action=>"blame", file_name=>$file_name)},
3921                        "HEAD");
3922        git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
3923        git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
3924        git_print_page_path($file_name, $ftype, $hash_base);
3925        my @rev_color = (qw(light2 dark2));
3926        my $num_colors = scalar(@rev_color);
3927        my $current_color = 0;
3928        my $last_rev;
3929        print <<HTML;
3930<div class="page_body">
3931<table class="blame">
3932<tr><th>Commit</th><th>Line</th><th>Data</th></tr>
3933HTML
3934        my %metainfo = ();
3935        while (1) {
3936                $_ = <$fd>;
3937                last unless defined $_;
3938                my ($full_rev, $orig_lineno, $lineno, $group_size) =
3939                    /^([0-9a-f]{40}) (\d+) (\d+)(?: (\d+))?$/;
3940                if (!exists $metainfo{$full_rev}) {
3941                        $metainfo{$full_rev} = {};
3942                }
3943                my $meta = $metainfo{$full_rev};
3944                while (<$fd>) {
3945                        last if (s/^\t//);
3946                        if (/^(\S+) (.*)$/) {
3947                                $meta->{$1} = $2;
3948                        }
3949                }
3950                my $data = $_;
3951                chomp $data;
3952                my $rev = substr($full_rev, 0, 8);
3953                my $author = $meta->{'author'};
3954                my %date = parse_date($meta->{'author-time'},
3955                                      $meta->{'author-tz'});
3956                my $date = $date{'iso-tz'};
3957                if ($group_size) {
3958                        $current_color = ++$current_color % $num_colors;
3959                }
3960                print "<tr class=\"$rev_color[$current_color]\">\n";
3961                if ($group_size) {
3962                        print "<td class=\"sha1\"";
3963                        print " title=\"". esc_html($author) . ", $date\"";
3964                        print " rowspan=\"$group_size\"" if ($group_size > 1);
3965                        print ">";
3966                        print $cgi->a({-href => href(action=>"commit",
3967                                                     hash=>$full_rev,
3968                                                     file_name=>$file_name)},
3969                                      esc_html($rev));
3970                        print "</td>\n";
3971                }
3972                open (my $dd, "-|", git_cmd(), "rev-parse", "$full_rev^")
3973                        or die_error(undef, "Open git-rev-parse failed");
3974                my $parent_commit = <$dd>;
3975                close $dd;
3976                chomp($parent_commit);
3977                my $blamed = href(action => 'blame',
3978                                  file_name => $meta->{'filename'},
3979                                  hash_base => $parent_commit);
3980                print "<td class=\"linenr\">";
3981                print $cgi->a({ -href => "$blamed#l$orig_lineno",
3982                                -id => "l$lineno",
3983                                -class => "linenr" },
3984                              esc_html($lineno));
3985                print "</td>";
3986                print "<td class=\"pre\">" . esc_html($data) . "</td>\n";
3987                print "</tr>\n";
3988        }
3989        print "</table>\n";
3990        print "</div>";
3991        close $fd
3992                or print "Reading blob failed\n";
3993        git_footer_html();
3994}
3995
3996sub git_blame {
3997        my $fd;
3998
3999        my ($have_blame) = gitweb_check_feature('blame');
4000        if (!$have_blame) {
4001                die_error('403 Permission denied', "Permission denied");
4002        }
4003        die_error('404 Not Found', "File name not defined") if (!$file_name);
4004        $hash_base ||= git_get_head_hash($project);
4005        die_error(undef, "Couldn't find base commit") unless ($hash_base);
4006        my %co = parse_commit($hash_base)
4007                or die_error(undef, "Reading commit failed");
4008        if (!defined $hash) {
4009                $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
4010                        or die_error(undef, "Error lookup file");
4011        }
4012        open ($fd, "-|", git_cmd(), "annotate", '-l', '-t', '-r', $file_name, $hash_base)
4013                or die_error(undef, "Open git-annotate failed");
4014        git_header_html();
4015        my $formats_nav =
4016                $cgi->a({-href => href(action=>"blob", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
4017                        "blob") .
4018                " | " .
4019                $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
4020                        "history") .
4021                " | " .
4022                $cgi->a({-href => href(action=>"blame", file_name=>$file_name)},
4023                        "HEAD");
4024        git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
4025        git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
4026        git_print_page_path($file_name, 'blob', $hash_base);
4027        print "<div class=\"page_body\">\n";
4028        print <<HTML;
4029<table class="blame">
4030  <tr>
4031    <th>Commit</th>
4032    <th>Age</th>
4033    <th>Author</th>
4034    <th>Line</th>
4035    <th>Data</th>
4036  </tr>
4037HTML
4038        my @line_class = (qw(light dark));
4039        my $line_class_len = scalar (@line_class);
4040        my $line_class_num = $#line_class;
4041        while (my $line = <$fd>) {
4042                my $long_rev;
4043                my $short_rev;
4044                my $author;
4045                my $time;
4046                my $lineno;
4047                my $data;
4048                my $age;
4049                my $age_str;
4050                my $age_class;
4051
4052                chomp $line;
4053                $line_class_num = ($line_class_num + 1) % $line_class_len;
4054
4055                if ($line =~ m/^([0-9a-fA-F]{40})\t\(\s*([^\t]+)\t(\d+) [+-]\d\d\d\d\t(\d+)\)(.*)$/) {
4056                        $long_rev = $1;
4057                        $author   = $2;
4058                        $time     = $3;
4059                        $lineno   = $4;
4060                        $data     = $5;
4061                } else {
4062                        print qq(  <tr><td colspan="5" class="error">Unable to parse: $line</td></tr>\n);
4063                        next;
4064                }
4065                $short_rev  = substr ($long_rev, 0, 8);
4066                $age        = time () - $time;
4067                $age_str    = age_string ($age);
4068                $age_str    =~ s/ /&nbsp;/g;
4069                $age_class  = age_class($age);
4070                $author     = esc_html ($author);
4071                $author     =~ s/ /&nbsp;/g;
4072
4073                $data = untabify($data);
4074                $data = esc_html ($data);
4075
4076                print <<HTML;
4077  <tr class="$line_class[$line_class_num]">
4078    <td class="sha1"><a href="${\href (action=>"commit", hash=>$long_rev)}" class="text">$short_rev..</a></td>
4079    <td class="$age_class">$age_str</td>
4080    <td>$author</td>
4081    <td class="linenr"><a id="$lineno" href="#$lineno" class="linenr">$lineno</a></td>
4082    <td class="pre">$data</td>
4083  </tr>
4084HTML
4085        } # while (my $line = <$fd>)
4086        print "</table>\n\n";
4087        close $fd
4088                or print "Reading blob failed.\n";
4089        print "</div>";
4090        git_footer_html();
4091}
4092
4093sub git_tags {
4094        my $head = git_get_head_hash($project);
4095        git_header_html();
4096        git_print_page_nav('','', $head,undef,$head);
4097        git_print_header_div('summary', $project);
4098
4099        my @tagslist = git_get_tags_list();
4100        if (@tagslist) {
4101                git_tags_body(\@tagslist);
4102        }
4103        git_footer_html();
4104}
4105
4106sub git_heads {
4107        my $head = git_get_head_hash($project);
4108        git_header_html();
4109        git_print_page_nav('','', $head,undef,$head);
4110        git_print_header_div('summary', $project);
4111
4112        my @headslist = git_get_heads_list();
4113        if (@headslist) {
4114                git_heads_body(\@headslist, $head);
4115        }
4116        git_footer_html();
4117}
4118
4119sub git_blob_plain {
4120        my $expires;
4121
4122        if (!defined $hash) {
4123                if (defined $file_name) {
4124                        my $base = $hash_base || git_get_head_hash($project);
4125                        $hash = git_get_hash_by_path($base, $file_name, "blob")
4126                                or die_error(undef, "Error lookup file");
4127                } else {
4128                        die_error(undef, "No file name defined");
4129                }
4130        } elsif ($hash =~ m/^[0-9a-fA-F]{40}$/) {
4131                # blobs defined by non-textual hash id's can be cached
4132                $expires = "+1d";
4133        }
4134
4135        my $type = shift;
4136        open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
4137                or die_error(undef, "Couldn't cat $file_name, $hash");
4138
4139        $type ||= blob_mimetype($fd, $file_name);
4140
4141        # save as filename, even when no $file_name is given
4142        my $save_as = "$hash";
4143        if (defined $file_name) {
4144                $save_as = $file_name;
4145        } elsif ($type =~ m/^text\//) {
4146                $save_as .= '.txt';
4147        }
4148
4149        print $cgi->header(
4150                -type => "$type",
4151                -expires=>$expires,
4152                -content_disposition => 'inline; filename="' . "$save_as" . '"');
4153        undef $/;
4154        binmode STDOUT, ':raw';
4155        print <$fd>;
4156        binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
4157        $/ = "\n";
4158        close $fd;
4159}
4160
4161sub git_blob {
4162        my $expires;
4163
4164        if (!defined $hash) {
4165                if (defined $file_name) {
4166                        my $base = $hash_base || git_get_head_hash($project);
4167                        $hash = git_get_hash_by_path($base, $file_name, "blob")
4168                                or die_error(undef, "Error lookup file");
4169                } else {
4170                        die_error(undef, "No file name defined");
4171                }
4172        } elsif ($hash =~ m/^[0-9a-fA-F]{40}$/) {
4173                # blobs defined by non-textual hash id's can be cached
4174                $expires = "+1d";
4175        }
4176
4177        my ($have_blame) = gitweb_check_feature('blame');
4178        open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
4179                or die_error(undef, "Couldn't cat $file_name, $hash");
4180        my $mimetype = blob_mimetype($fd, $file_name);
4181        if ($mimetype !~ m!^(?:text/|image/(?:gif|png|jpeg)$)!) {
4182                close $fd;
4183                return git_blob_plain($mimetype);
4184        }
4185        # we can have blame only for text/* mimetype
4186        $have_blame &&= ($mimetype =~ m!^text/!);
4187
4188        git_header_html(undef, $expires);
4189        my $formats_nav = '';
4190        if (defined $hash_base && (my %co = parse_commit($hash_base))) {
4191                if (defined $file_name) {
4192                        if ($have_blame) {
4193                                $formats_nav .=
4194                                        $cgi->a({-href => href(action=>"blame", -replay=>1)},
4195                                                "blame") .
4196                                        " | ";
4197                        }
4198                        $formats_nav .=
4199                                $cgi->a({-href => href(action=>"history", -replay=>1)},
4200                                        "history") .
4201                                " | " .
4202                                $cgi->a({-href => href(action=>"blob_plain", -replay=>1)},
4203                                        "raw") .
4204                                " | " .
4205                                $cgi->a({-href => href(action=>"blob",
4206                                                       hash_base=>"HEAD", file_name=>$file_name)},
4207                                        "HEAD");
4208                } else {
4209                        $formats_nav .=
4210                                $cgi->a({-href => href(action=>"blob_plain", -replay=>1)},
4211                                        "raw");
4212                }
4213                git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
4214                git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
4215        } else {
4216                print "<div class=\"page_nav\">\n" .
4217                      "<br/><br/></div>\n" .
4218                      "<div class=\"title\">$hash</div>\n";
4219        }
4220        git_print_page_path($file_name, "blob", $hash_base);
4221        print "<div class=\"page_body\">\n";
4222        if ($mimetype =~ m!^text/!) {
4223                my $nr;
4224                while (my $line = <$fd>) {
4225                        chomp $line;
4226                        $nr++;
4227                        $line = untabify($line);
4228                        printf "<div class=\"pre\"><a id=\"l%i\" href=\"#l%i\" class=\"linenr\">%4i</a> %s</div>\n",
4229                               $nr, $nr, $nr, esc_html($line, -nbsp=>1);
4230                }
4231        } elsif ($mimetype =~ m!^image/!) {
4232                print qq!<img type="$mimetype"!;
4233                if ($file_name) {
4234                        print qq! alt="$file_name" title="$file_name"!;
4235                }
4236                print qq! src="! .
4237                      href(action=>"blob_plain", hash=>$hash,
4238                           hash_base=>$hash_base, file_name=>$file_name) .
4239                      qq!" />\n!;
4240        }
4241        close $fd
4242                or print "Reading blob failed.\n";
4243        print "</div>";
4244        git_footer_html();
4245}
4246
4247sub git_tree {
4248        if (!defined $hash_base) {
4249                $hash_base = "HEAD";
4250        }
4251        if (!defined $hash) {
4252                if (defined $file_name) {
4253                        $hash = git_get_hash_by_path($hash_base, $file_name, "tree");
4254                } else {
4255                        $hash = $hash_base;
4256                }
4257        }
4258        $/ = "\0";
4259        open my $fd, "-|", git_cmd(), "ls-tree", '-z', $hash
4260                or die_error(undef, "Open git-ls-tree failed");
4261        my @entries = map { chomp; $_ } <$fd>;
4262        close $fd or die_error(undef, "Reading tree failed");
4263        $/ = "\n";
4264
4265        my $refs = git_get_references();
4266        my $ref = format_ref_marker($refs, $hash_base);
4267        git_header_html();
4268        my $basedir = '';
4269        my ($have_blame) = gitweb_check_feature('blame');
4270        if (defined $hash_base && (my %co = parse_commit($hash_base))) {
4271                my @views_nav = ();
4272                if (defined $file_name) {
4273                        push @views_nav,
4274                                $cgi->a({-href => href(action=>"history", -replay=>1)},
4275                                        "history"),
4276                                $cgi->a({-href => href(action=>"tree",
4277                                                       hash_base=>"HEAD", file_name=>$file_name)},
4278                                        "HEAD"),
4279                }
4280                my $snapshot_links = format_snapshot_links($hash);
4281                if (defined $snapshot_links) {
4282                        # FIXME: Should be available when we have no hash base as well.
4283                        push @views_nav, $snapshot_links;
4284                }
4285                git_print_page_nav('tree','', $hash_base, undef, undef, join(' | ', @views_nav));
4286                git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash_base);
4287        } else {
4288                undef $hash_base;
4289                print "<div class=\"page_nav\">\n";
4290                print "<br/><br/></div>\n";
4291                print "<div class=\"title\">$hash</div>\n";
4292        }
4293        if (defined $file_name) {
4294                $basedir = $file_name;
4295                if ($basedir ne '' && substr($basedir, -1) ne '/') {
4296                        $basedir .= '/';
4297                }
4298        }
4299        git_print_page_path($file_name, 'tree', $hash_base);
4300        print "<div class=\"page_body\">\n";
4301        print "<table cellspacing=\"0\">\n";
4302        my $alternate = 1;
4303        # '..' (top directory) link if possible
4304        if (defined $hash_base &&
4305            defined $file_name && $file_name =~ m![^/]+$!) {
4306                if ($alternate) {
4307                        print "<tr class=\"dark\">\n";
4308                } else {
4309                        print "<tr class=\"light\">\n";
4310                }
4311                $alternate ^= 1;
4312
4313                my $up = $file_name;
4314                $up =~ s!/?[^/]+$!!;
4315                undef $up unless $up;
4316                # based on git_print_tree_entry
4317                print '<td class="mode">' . mode_str('040000') . "</td>\n";
4318                print '<td class="list">';
4319                print $cgi->a({-href => href(action=>"tree", hash_base=>$hash_base,
4320                                             file_name=>$up)},
4321                              "..");
4322                print "</td>\n";
4323                print "<td class=\"link\"></td>\n";
4324
4325                print "</tr>\n";
4326        }
4327        foreach my $line (@entries) {
4328                my %t = parse_ls_tree_line($line, -z => 1);
4329
4330                if ($alternate) {
4331                        print "<tr class=\"dark\">\n";
4332                } else {
4333                        print "<tr class=\"light\">\n";
4334                }
4335                $alternate ^= 1;
4336
4337                git_print_tree_entry(\%t, $basedir, $hash_base, $have_blame);
4338
4339                print "</tr>\n";
4340        }
4341        print "</table>\n" .
4342              "</div>";
4343        git_footer_html();
4344}
4345
4346sub git_snapshot {
4347        my @supported_fmts = gitweb_check_feature('snapshot');
4348        @supported_fmts = filter_snapshot_fmts(@supported_fmts);
4349
4350        my $format = $cgi->param('sf');
4351        if (!@supported_fmts) {
4352                die_error('403 Permission denied', "Permission denied");
4353        }
4354        # default to first supported snapshot format
4355        $format ||= $supported_fmts[0];
4356        if ($format !~ m/^[a-z0-9]+$/) {
4357                die_error(undef, "Invalid snapshot format parameter");
4358        } elsif (!exists($known_snapshot_formats{$format})) {
4359                die_error(undef, "Unknown snapshot format");
4360        } elsif (!grep($_ eq $format, @supported_fmts)) {
4361                die_error(undef, "Unsupported snapshot format");
4362        }
4363
4364        if (!defined $hash) {
4365                $hash = git_get_head_hash($project);
4366        }
4367
4368        my $git_command = git_cmd_str();
4369        my $name = $project;
4370        $name =~ s,([^/])/*\.git$,$1,;
4371        $name = basename($name);
4372        my $filename = to_utf8($name);
4373        $name =~ s/\047/\047\\\047\047/g;
4374        my $cmd;
4375        $filename .= "-$hash$known_snapshot_formats{$format}{'suffix'}";
4376        $cmd = "$git_command archive " .
4377                "--format=$known_snapshot_formats{$format}{'format'} " .
4378                "--prefix=\'$name\'/ $hash";
4379        if (exists $known_snapshot_formats{$format}{'compressor'}) {
4380                $cmd .= ' | ' . join ' ', @{$known_snapshot_formats{$format}{'compressor'}};
4381        }
4382
4383        print $cgi->header(
4384                -type => $known_snapshot_formats{$format}{'type'},
4385                -content_disposition => 'inline; filename="' . "$filename" . '"',
4386                -status => '200 OK');
4387
4388        open my $fd, "-|", $cmd
4389                or die_error(undef, "Execute git-archive failed");
4390        binmode STDOUT, ':raw';
4391        print <$fd>;
4392        binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
4393        close $fd;
4394}
4395
4396sub git_log {
4397        my $head = git_get_head_hash($project);
4398        if (!defined $hash) {
4399                $hash = $head;
4400        }
4401        if (!defined $page) {
4402                $page = 0;
4403        }
4404        my $refs = git_get_references();
4405
4406        my @commitlist = parse_commits($hash, 101, (100 * $page));
4407
4408        my $paging_nav = format_paging_nav('log', $hash, $head, $page, (100 * ($page+1)));
4409
4410        git_header_html();
4411        git_print_page_nav('log','', $hash,undef,undef, $paging_nav);
4412
4413        if (!@commitlist) {
4414                my %co = parse_commit($hash);
4415
4416                git_print_header_div('summary', $project);
4417                print "<div class=\"page_body\"> Last change $co{'age_string'}.<br/><br/></div>\n";
4418        }
4419        my $to = ($#commitlist >= 99) ? (99) : ($#commitlist);
4420        for (my $i = 0; $i <= $to; $i++) {
4421                my %co = %{$commitlist[$i]};
4422                next if !%co;
4423                my $commit = $co{'id'};
4424                my $ref = format_ref_marker($refs, $commit);
4425                my %ad = parse_date($co{'author_epoch'});
4426                git_print_header_div('commit',
4427                               "<span class=\"age\">$co{'age_string'}</span>" .
4428                               esc_html($co{'title'}) . $ref,
4429                               $commit);
4430                print "<div class=\"title_text\">\n" .
4431                      "<div class=\"log_link\">\n" .
4432                      $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") .
4433                      " | " .
4434                      $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") .
4435                      " | " .
4436                      $cgi->a({-href => href(action=>"tree", hash=>$commit, hash_base=>$commit)}, "tree") .
4437                      "<br/>\n" .
4438                      "</div>\n" .
4439                      "<i>" . esc_html($co{'author_name'}) .  " [$ad{'rfc2822'}]</i><br/>\n" .
4440                      "</div>\n";
4441
4442                print "<div class=\"log_body\">\n";
4443                git_print_log($co{'comment'}, -final_empty_line=> 1);
4444                print "</div>\n";
4445        }
4446        if ($#commitlist >= 100) {
4447                print "<div class=\"page_nav\">\n";
4448                print $cgi->a({-href => href(-replay=>1, page=>$page+1),
4449                               -accesskey => "n", -title => "Alt-n"}, "next");
4450                print "</div>\n";
4451        }
4452        git_footer_html();
4453}
4454
4455sub git_commit {
4456        $hash ||= $hash_base || "HEAD";
4457        my %co = parse_commit($hash);
4458        if (!%co) {
4459                die_error(undef, "Unknown commit object");
4460        }
4461        my %ad = parse_date($co{'author_epoch'}, $co{'author_tz'});
4462        my %cd = parse_date($co{'committer_epoch'}, $co{'committer_tz'});
4463
4464        my $parent  = $co{'parent'};
4465        my $parents = $co{'parents'}; # listref
4466
4467        # we need to prepare $formats_nav before any parameter munging
4468        my $formats_nav;
4469        if (!defined $parent) {
4470                # --root commitdiff
4471                $formats_nav .= '(initial)';
4472        } elsif (@$parents == 1) {
4473                # single parent commit
4474                $formats_nav .=
4475                        '(parent: ' .
4476                        $cgi->a({-href => href(action=>"commit",
4477                                               hash=>$parent)},
4478                                esc_html(substr($parent, 0, 7))) .
4479                        ')';
4480        } else {
4481                # merge commit
4482                $formats_nav .=
4483                        '(merge: ' .
4484                        join(' ', map {
4485                                $cgi->a({-href => href(action=>"commit",
4486                                                       hash=>$_)},
4487                                        esc_html(substr($_, 0, 7)));
4488                        } @$parents ) .
4489                        ')';
4490        }
4491
4492        if (!defined $parent) {
4493                $parent = "--root";
4494        }
4495        my @difftree;
4496        open my $fd, "-|", git_cmd(), "diff-tree", '-r', "--no-commit-id",
4497                @diff_opts,
4498                (@$parents <= 1 ? $parent : '-c'),
4499                $hash, "--"
4500                or die_error(undef, "Open git-diff-tree failed");
4501        @difftree = map { chomp; $_ } <$fd>;
4502        close $fd or die_error(undef, "Reading git-diff-tree failed");
4503
4504        # non-textual hash id's can be cached
4505        my $expires;
4506        if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
4507                $expires = "+1d";
4508        }
4509        my $refs = git_get_references();
4510        my $ref = format_ref_marker($refs, $co{'id'});
4511
4512        git_header_html(undef, $expires);
4513        git_print_page_nav('commit', '',
4514                           $hash, $co{'tree'}, $hash,
4515                           $formats_nav);
4516
4517        if (defined $co{'parent'}) {
4518                git_print_header_div('commitdiff', esc_html($co{'title'}) . $ref, $hash);
4519        } else {
4520                git_print_header_div('tree', esc_html($co{'title'}) . $ref, $co{'tree'}, $hash);
4521        }
4522        print "<div class=\"title_text\">\n" .
4523              "<table cellspacing=\"0\">\n";
4524        print "<tr><td>author</td><td>" . esc_html($co{'author'}) . "</td></tr>\n".
4525              "<tr>" .
4526              "<td></td><td> $ad{'rfc2822'}";
4527        if ($ad{'hour_local'} < 6) {
4528                printf(" (<span class=\"atnight\">%02d:%02d</span> %s)",
4529                       $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
4530        } else {
4531                printf(" (%02d:%02d %s)",
4532                       $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
4533        }
4534        print "</td>" .
4535              "</tr>\n";
4536        print "<tr><td>committer</td><td>" . esc_html($co{'committer'}) . "</td></tr>\n";
4537        print "<tr><td></td><td> $cd{'rfc2822'}" .
4538              sprintf(" (%02d:%02d %s)", $cd{'hour_local'}, $cd{'minute_local'}, $cd{'tz_local'}) .
4539              "</td></tr>\n";
4540        print "<tr><td>commit</td><td class=\"sha1\">$co{'id'}</td></tr>\n";
4541        print "<tr>" .
4542              "<td>tree</td>" .
4543              "<td class=\"sha1\">" .
4544              $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash),
4545                       class => "list"}, $co{'tree'}) .
4546              "</td>" .
4547              "<td class=\"link\">" .
4548              $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash)},
4549                      "tree");
4550        my $snapshot_links = format_snapshot_links($hash);
4551        if (defined $snapshot_links) {
4552                print " | " . $snapshot_links;
4553        }
4554        print "</td>" .
4555              "</tr>\n";
4556
4557        foreach my $par (@$parents) {
4558                print "<tr>" .
4559                      "<td>parent</td>" .
4560                      "<td class=\"sha1\">" .
4561                      $cgi->a({-href => href(action=>"commit", hash=>$par),
4562                               class => "list"}, $par) .
4563                      "</td>" .
4564                      "<td class=\"link\">" .
4565                      $cgi->a({-href => href(action=>"commit", hash=>$par)}, "commit") .
4566                      " | " .
4567                      $cgi->a({-href => href(action=>"commitdiff", hash=>$hash, hash_parent=>$par)}, "diff") .
4568                      "</td>" .
4569                      "</tr>\n";
4570        }
4571        print "</table>".
4572              "</div>\n";
4573
4574        print "<div class=\"page_body\">\n";
4575        git_print_log($co{'comment'});
4576        print "</div>\n";
4577
4578        git_difftree_body(\@difftree, $hash, @$parents);
4579
4580        git_footer_html();
4581}
4582
4583sub git_object {
4584        # object is defined by:
4585        # - hash or hash_base alone
4586        # - hash_base and file_name
4587        my $type;
4588
4589        # - hash or hash_base alone
4590        if ($hash || ($hash_base && !defined $file_name)) {
4591                my $object_id = $hash || $hash_base;
4592
4593                my $git_command = git_cmd_str();
4594                open my $fd, "-|", "$git_command cat-file -t $object_id 2>/dev/null"
4595                        or die_error('404 Not Found', "Object does not exist");
4596                $type = <$fd>;
4597                chomp $type;
4598                close $fd
4599                        or die_error('404 Not Found', "Object does not exist");
4600
4601        # - hash_base and file_name
4602        } elsif ($hash_base && defined $file_name) {
4603                $file_name =~ s,/+$,,;
4604
4605                system(git_cmd(), "cat-file", '-e', $hash_base) == 0
4606                        or die_error('404 Not Found', "Base object does not exist");
4607
4608                # here errors should not hapen
4609                open my $fd, "-|", git_cmd(), "ls-tree", $hash_base, "--", $file_name
4610                        or die_error(undef, "Open git-ls-tree failed");
4611                my $line = <$fd>;
4612                close $fd;
4613
4614                #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
4615                unless ($line && $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t/) {
4616                        die_error('404 Not Found', "File or directory for given base does not exist");
4617                }
4618                $type = $2;
4619                $hash = $3;
4620        } else {
4621                die_error('404 Not Found', "Not enough information to find object");
4622        }
4623
4624        print $cgi->redirect(-uri => href(action=>$type, -full=>1,
4625                                          hash=>$hash, hash_base=>$hash_base,
4626                                          file_name=>$file_name),
4627                             -status => '302 Found');
4628}
4629
4630sub git_blobdiff {
4631        my $format = shift || 'html';
4632
4633        my $fd;
4634        my @difftree;
4635        my %diffinfo;
4636        my $expires;
4637
4638        # preparing $fd and %diffinfo for git_patchset_body
4639        # new style URI
4640        if (defined $hash_base && defined $hash_parent_base) {
4641                if (defined $file_name) {
4642                        # read raw output
4643                        open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4644                                $hash_parent_base, $hash_base,
4645                                "--", (defined $file_parent ? $file_parent : ()), $file_name
4646                                or die_error(undef, "Open git-diff-tree failed");
4647                        @difftree = map { chomp; $_ } <$fd>;
4648                        close $fd
4649                                or die_error(undef, "Reading git-diff-tree failed");
4650                        @difftree
4651                                or die_error('404 Not Found', "Blob diff not found");
4652
4653                } elsif (defined $hash &&
4654                         $hash =~ /[0-9a-fA-F]{40}/) {
4655                        # try to find filename from $hash
4656
4657                        # read filtered raw output
4658                        open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4659                                $hash_parent_base, $hash_base, "--"
4660                                or die_error(undef, "Open git-diff-tree failed");
4661                        @difftree =
4662                                # ':100644 100644 03b21826... 3b93d5e7... M     ls-files.c'
4663                                # $hash == to_id
4664                                grep { /^:[0-7]{6} [0-7]{6} [0-9a-fA-F]{40} $hash/ }
4665                                map { chomp; $_ } <$fd>;
4666                        close $fd
4667                                or die_error(undef, "Reading git-diff-tree failed");
4668                        @difftree
4669                                or die_error('404 Not Found', "Blob diff not found");
4670
4671                } else {
4672                        die_error('404 Not Found', "Missing one of the blob diff parameters");
4673                }
4674
4675                if (@difftree > 1) {
4676                        die_error('404 Not Found', "Ambiguous blob diff specification");
4677                }
4678
4679                %diffinfo = parse_difftree_raw_line($difftree[0]);
4680                $file_parent ||= $diffinfo{'from_file'} || $file_name;
4681                $file_name   ||= $diffinfo{'to_file'};
4682
4683                $hash_parent ||= $diffinfo{'from_id'};
4684                $hash        ||= $diffinfo{'to_id'};
4685
4686                # non-textual hash id's can be cached
4687                if ($hash_base =~ m/^[0-9a-fA-F]{40}$/ &&
4688                    $hash_parent_base =~ m/^[0-9a-fA-F]{40}$/) {
4689                        $expires = '+1d';
4690                }
4691
4692                # open patch output
4693                open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4694                        '-p', ($format eq 'html' ? "--full-index" : ()),
4695                        $hash_parent_base, $hash_base,
4696                        "--", (defined $file_parent ? $file_parent : ()), $file_name
4697                        or die_error(undef, "Open git-diff-tree failed");
4698        }
4699
4700        # old/legacy style URI
4701        if (!%diffinfo && # if new style URI failed
4702            defined $hash && defined $hash_parent) {
4703                # fake git-diff-tree raw output
4704                $diffinfo{'from_mode'} = $diffinfo{'to_mode'} = "blob";
4705                $diffinfo{'from_id'} = $hash_parent;
4706                $diffinfo{'to_id'}   = $hash;
4707                if (defined $file_name) {
4708                        if (defined $file_parent) {
4709                                $diffinfo{'status'} = '2';
4710                                $diffinfo{'from_file'} = $file_parent;
4711                                $diffinfo{'to_file'}   = $file_name;
4712                        } else { # assume not renamed
4713                                $diffinfo{'status'} = '1';
4714                                $diffinfo{'from_file'} = $file_name;
4715                                $diffinfo{'to_file'}   = $file_name;
4716                        }
4717                } else { # no filename given
4718                        $diffinfo{'status'} = '2';
4719                        $diffinfo{'from_file'} = $hash_parent;
4720                        $diffinfo{'to_file'}   = $hash;
4721                }
4722
4723                # non-textual hash id's can be cached
4724                if ($hash =~ m/^[0-9a-fA-F]{40}$/ &&
4725                    $hash_parent =~ m/^[0-9a-fA-F]{40}$/) {
4726                        $expires = '+1d';
4727                }
4728
4729                # open patch output
4730                open $fd, "-|", git_cmd(), "diff", @diff_opts,
4731                        '-p', ($format eq 'html' ? "--full-index" : ()),
4732                        $hash_parent, $hash, "--"
4733                        or die_error(undef, "Open git-diff failed");
4734        } else  {
4735                die_error('404 Not Found', "Missing one of the blob diff parameters")
4736                        unless %diffinfo;
4737        }
4738
4739        # header
4740        if ($format eq 'html') {
4741                my $formats_nav =
4742                        $cgi->a({-href => href(action=>"blobdiff_plain", -replay=>1)},
4743                                "raw");
4744                git_header_html(undef, $expires);
4745                if (defined $hash_base && (my %co = parse_commit($hash_base))) {
4746                        git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
4747                        git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
4748                } else {
4749                        print "<div class=\"page_nav\"><br/>$formats_nav<br/></div>\n";
4750                        print "<div class=\"title\">$hash vs $hash_parent</div>\n";
4751                }
4752                if (defined $file_name) {
4753                        git_print_page_path($file_name, "blob", $hash_base);
4754                } else {
4755                        print "<div class=\"page_path\"></div>\n";
4756                }
4757
4758        } elsif ($format eq 'plain') {
4759                print $cgi->header(
4760                        -type => 'text/plain',
4761                        -charset => 'utf-8',
4762                        -expires => $expires,
4763                        -content_disposition => 'inline; filename="' . "$file_name" . '.patch"');
4764
4765                print "X-Git-Url: " . $cgi->self_url() . "\n\n";
4766
4767        } else {
4768                die_error(undef, "Unknown blobdiff format");
4769        }
4770
4771        # patch
4772        if ($format eq 'html') {
4773                print "<div class=\"page_body\">\n";
4774
4775                git_patchset_body($fd, [ \%diffinfo ], $hash_base, $hash_parent_base);
4776                close $fd;
4777
4778                print "</div>\n"; # class="page_body"
4779                git_footer_html();
4780
4781        } else {
4782                while (my $line = <$fd>) {
4783                        $line =~ s!a/($hash|$hash_parent)!'a/'.esc_path($diffinfo{'from_file'})!eg;
4784                        $line =~ s!b/($hash|$hash_parent)!'b/'.esc_path($diffinfo{'to_file'})!eg;
4785
4786                        print $line;
4787
4788                        last if $line =~ m!^\+\+\+!;
4789                }
4790                local $/ = undef;
4791                print <$fd>;
4792                close $fd;
4793        }
4794}
4795
4796sub git_blobdiff_plain {
4797        git_blobdiff('plain');
4798}
4799
4800sub git_commitdiff {
4801        my $format = shift || 'html';
4802        $hash ||= $hash_base || "HEAD";
4803        my %co = parse_commit($hash);
4804        if (!%co) {
4805                die_error(undef, "Unknown commit object");
4806        }
4807
4808        # choose format for commitdiff for merge
4809        if (! defined $hash_parent && @{$co{'parents'}} > 1) {
4810                $hash_parent = '--cc';
4811        }
4812        # we need to prepare $formats_nav before almost any parameter munging
4813        my $formats_nav;
4814        if ($format eq 'html') {
4815                $formats_nav =
4816                        $cgi->a({-href => href(action=>"commitdiff_plain", -replay=>1)},
4817                                "raw");
4818
4819                if (defined $hash_parent &&
4820                    $hash_parent ne '-c' && $hash_parent ne '--cc') {
4821                        # commitdiff with two commits given
4822                        my $hash_parent_short = $hash_parent;
4823                        if ($hash_parent =~ m/^[0-9a-fA-F]{40}$/) {
4824                                $hash_parent_short = substr($hash_parent, 0, 7);
4825                        }
4826                        $formats_nav .=
4827                                ' (from';
4828                        for (my $i = 0; $i < @{$co{'parents'}}; $i++) {
4829                                if ($co{'parents'}[$i] eq $hash_parent) {
4830                                        $formats_nav .= ' parent ' . ($i+1);
4831                                        last;
4832                                }
4833                        }
4834                        $formats_nav .= ': ' .
4835                                $cgi->a({-href => href(action=>"commitdiff",
4836                                                       hash=>$hash_parent)},
4837                                        esc_html($hash_parent_short)) .
4838                                ')';
4839                } elsif (!$co{'parent'}) {
4840                        # --root commitdiff
4841                        $formats_nav .= ' (initial)';
4842                } elsif (scalar @{$co{'parents'}} == 1) {
4843                        # single parent commit
4844                        $formats_nav .=
4845                                ' (parent: ' .
4846                                $cgi->a({-href => href(action=>"commitdiff",
4847                                                       hash=>$co{'parent'})},
4848                                        esc_html(substr($co{'parent'}, 0, 7))) .
4849                                ')';
4850                } else {
4851                        # merge commit
4852                        if ($hash_parent eq '--cc') {
4853                                $formats_nav .= ' | ' .
4854                                        $cgi->a({-href => href(action=>"commitdiff",
4855                                                               hash=>$hash, hash_parent=>'-c')},
4856                                                'combined');
4857                        } else { # $hash_parent eq '-c'
4858                                $formats_nav .= ' | ' .
4859                                        $cgi->a({-href => href(action=>"commitdiff",
4860                                                               hash=>$hash, hash_parent=>'--cc')},
4861                                                'compact');
4862                        }
4863                        $formats_nav .=
4864                                ' (merge: ' .
4865                                join(' ', map {
4866                                        $cgi->a({-href => href(action=>"commitdiff",
4867                                                               hash=>$_)},
4868                                                esc_html(substr($_, 0, 7)));
4869                                } @{$co{'parents'}} ) .
4870                                ')';
4871                }
4872        }
4873
4874        my $hash_parent_param = $hash_parent;
4875        if (!defined $hash_parent_param) {
4876                # --cc for multiple parents, --root for parentless
4877                $hash_parent_param =
4878                        @{$co{'parents'}} > 1 ? '--cc' : $co{'parent'} || '--root';
4879        }
4880
4881        # read commitdiff
4882        my $fd;
4883        my @difftree;
4884        if ($format eq 'html') {
4885                open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4886                        "--no-commit-id", "--patch-with-raw", "--full-index",
4887                        $hash_parent_param, $hash, "--"
4888                        or die_error(undef, "Open git-diff-tree failed");
4889
4890                while (my $line = <$fd>) {
4891                        chomp $line;
4892                        # empty line ends raw part of diff-tree output
4893                        last unless $line;
4894                        push @difftree, scalar parse_difftree_raw_line($line);
4895                }
4896
4897        } elsif ($format eq 'plain') {
4898                open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4899                        '-p', $hash_parent_param, $hash, "--"
4900                        or die_error(undef, "Open git-diff-tree failed");
4901
4902        } else {
4903                die_error(undef, "Unknown commitdiff format");
4904        }
4905
4906        # non-textual hash id's can be cached
4907        my $expires;
4908        if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
4909                $expires = "+1d";
4910        }
4911
4912        # write commit message
4913        if ($format eq 'html') {
4914                my $refs = git_get_references();
4915                my $ref = format_ref_marker($refs, $co{'id'});
4916
4917                git_header_html(undef, $expires);
4918                git_print_page_nav('commitdiff','', $hash,$co{'tree'},$hash, $formats_nav);
4919                git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash);
4920                git_print_authorship(\%co);
4921                print "<div class=\"page_body\">\n";
4922                if (@{$co{'comment'}} > 1) {
4923                        print "<div class=\"log\">\n";
4924                        git_print_log($co{'comment'}, -final_empty_line=> 1, -remove_title => 1);
4925                        print "</div>\n"; # class="log"
4926                }
4927
4928        } elsif ($format eq 'plain') {
4929                my $refs = git_get_references("tags");
4930                my $tagname = git_get_rev_name_tags($hash);
4931                my $filename = basename($project) . "-$hash.patch";
4932
4933                print $cgi->header(
4934                        -type => 'text/plain',
4935                        -charset => 'utf-8',
4936                        -expires => $expires,
4937                        -content_disposition => 'inline; filename="' . "$filename" . '"');
4938                my %ad = parse_date($co{'author_epoch'}, $co{'author_tz'});
4939                print <<TEXT;
4940From: $co{'author'}
4941Date: $ad{'rfc2822'} ($ad{'tz_local'})
4942Subject: $co{'title'}
4943TEXT
4944                print "X-Git-Tag: $tagname\n" if $tagname;
4945                print "X-Git-Url: " . $cgi->self_url() . "\n\n";
4946
4947                foreach my $line (@{$co{'comment'}}) {
4948                        print "$line\n";
4949                }
4950                print "---\n\n";
4951        }
4952
4953        # write patch
4954        if ($format eq 'html') {
4955                my $use_parents = !defined $hash_parent ||
4956                        $hash_parent eq '-c' || $hash_parent eq '--cc';
4957                git_difftree_body(\@difftree, $hash,
4958                                  $use_parents ? @{$co{'parents'}} : $hash_parent);
4959                print "<br/>\n";
4960
4961                git_patchset_body($fd, \@difftree, $hash,
4962                                  $use_parents ? @{$co{'parents'}} : $hash_parent);
4963                close $fd;
4964                print "</div>\n"; # class="page_body"
4965                git_footer_html();
4966
4967        } elsif ($format eq 'plain') {
4968                local $/ = undef;
4969                print <$fd>;
4970                close $fd
4971                        or print "Reading git-diff-tree failed\n";
4972        }
4973}
4974
4975sub git_commitdiff_plain {
4976        git_commitdiff('plain');
4977}
4978
4979sub git_history {
4980        if (!defined $hash_base) {
4981                $hash_base = git_get_head_hash($project);
4982        }
4983        if (!defined $page) {
4984                $page = 0;
4985        }
4986        my $ftype;
4987        my %co = parse_commit($hash_base);
4988        if (!%co) {
4989                die_error(undef, "Unknown commit object");
4990        }
4991
4992        my $refs = git_get_references();
4993        my $limit = sprintf("--max-count=%i", (100 * ($page+1)));
4994
4995        if (!defined $hash && defined $file_name) {
4996                $hash = git_get_hash_by_path($hash_base, $file_name);
4997        }
4998        if (defined $hash) {
4999                $ftype = git_get_type($hash);
5000        }
5001
5002        my @commitlist = parse_commits($hash_base, 101, (100 * $page), "--full-history", $file_name);
5003
5004        my $paging_nav = '';
5005        if ($page > 0) {
5006                $paging_nav .=
5007                        $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
5008                                               file_name=>$file_name)},
5009                                "first");
5010                $paging_nav .= " &sdot; " .
5011                        $cgi->a({-href => href(-replay=>1, page=>$page-1),
5012                                 -accesskey => "p", -title => "Alt-p"}, "prev");
5013        } else {
5014                $paging_nav .= "first";
5015                $paging_nav .= " &sdot; prev";
5016        }
5017        my $next_link = '';
5018        if ($#commitlist >= 100) {
5019                $next_link =
5020                        $cgi->a({-href => href(-replay=>1, page=>$page+1),
5021                                 -accesskey => "n", -title => "Alt-n"}, "next");
5022                $paging_nav .= " &sdot; $next_link";
5023        } else {
5024                $paging_nav .= " &sdot; next";
5025        }
5026
5027        git_header_html();
5028        git_print_page_nav('history','', $hash_base,$co{'tree'},$hash_base, $paging_nav);
5029        git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
5030        git_print_page_path($file_name, $ftype, $hash_base);
5031
5032        git_history_body(\@commitlist, 0, 99,
5033                         $refs, $hash_base, $ftype, $next_link);
5034
5035        git_footer_html();
5036}
5037
5038sub git_search {
5039        my ($have_search) = gitweb_check_feature('search');
5040        if (!$have_search) {
5041                die_error('403 Permission denied', "Permission denied");
5042        }
5043        if (!defined $searchtext) {
5044                die_error(undef, "Text field empty");
5045        }
5046        if (!defined $hash) {
5047                $hash = git_get_head_hash($project);
5048        }
5049        my %co = parse_commit($hash);
5050        if (!%co) {
5051                die_error(undef, "Unknown commit object");
5052        }
5053        if (!defined $page) {
5054                $page = 0;
5055        }
5056
5057        $searchtype ||= 'commit';
5058        if ($searchtype eq 'pickaxe') {
5059                # pickaxe may take all resources of your box and run for several minutes
5060                # with every query - so decide by yourself how public you make this feature
5061                my ($have_pickaxe) = gitweb_check_feature('pickaxe');
5062                if (!$have_pickaxe) {
5063                        die_error('403 Permission denied', "Permission denied");
5064                }
5065        }
5066        if ($searchtype eq 'grep') {
5067                my ($have_grep) = gitweb_check_feature('grep');
5068                if (!$have_grep) {
5069                        die_error('403 Permission denied', "Permission denied");
5070                }
5071        }
5072
5073        git_header_html();
5074
5075        if ($searchtype eq 'commit' or $searchtype eq 'author' or $searchtype eq 'committer') {
5076                my $greptype;
5077                if ($searchtype eq 'commit') {
5078                        $greptype = "--grep=";
5079                } elsif ($searchtype eq 'author') {
5080                        $greptype = "--author=";
5081                } elsif ($searchtype eq 'committer') {
5082                        $greptype = "--committer=";
5083                }
5084                $greptype .= $search_regexp;
5085                my @commitlist = parse_commits($hash, 101, (100 * $page), $greptype);
5086
5087                my $paging_nav = '';
5088                if ($page > 0) {
5089                        $paging_nav .=
5090                                $cgi->a({-href => href(action=>"search", hash=>$hash,
5091                                                       searchtext=>$searchtext, searchtype=>$searchtype)},
5092                                        "first");
5093                        $paging_nav .= " &sdot; " .
5094                                $cgi->a({-href => href(-replay=>1, page=>$page-1),
5095                                         -accesskey => "p", -title => "Alt-p"}, "prev");
5096                } else {
5097                        $paging_nav .= "first";
5098                        $paging_nav .= " &sdot; prev";
5099                }
5100                my $next_link = '';
5101                if ($#commitlist >= 100) {
5102                        $next_link =
5103                                $cgi->a({-href => href(-replay=>1, page=>$page+1),
5104                                         -accesskey => "n", -title => "Alt-n"}, "next");
5105                        $paging_nav .= " &sdot; $next_link";
5106                } else {
5107                        $paging_nav .= " &sdot; next";
5108                }
5109
5110                if ($#commitlist >= 100) {
5111                }
5112
5113                git_print_page_nav('','', $hash,$co{'tree'},$hash, $paging_nav);
5114                git_print_header_div('commit', esc_html($co{'title'}), $hash);
5115                git_search_grep_body(\@commitlist, 0, 99, $next_link);
5116        }
5117
5118        if ($searchtype eq 'pickaxe') {
5119                git_print_page_nav('','', $hash,$co{'tree'},$hash);
5120                git_print_header_div('commit', esc_html($co{'title'}), $hash);
5121
5122                print "<table cellspacing=\"0\">\n";
5123                my $alternate = 1;
5124                $/ = "\n";
5125                my $git_command = git_cmd_str();
5126                my $searchqtext = $searchtext;
5127                $searchqtext =~ s/'/'\\''/;
5128                open my $fd, "-|", "$git_command rev-list $hash | " .
5129                        "$git_command diff-tree -r --stdin -S\'$searchqtext\'";
5130                undef %co;
5131                my @files;
5132                while (my $line = <$fd>) {
5133                        if (%co && $line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)\t(.*)$/) {
5134                                my %set;
5135                                $set{'file'} = $6;
5136                                $set{'from_id'} = $3;
5137                                $set{'to_id'} = $4;
5138                                $set{'id'} = $set{'to_id'};
5139                                if ($set{'id'} =~ m/0{40}/) {
5140                                        $set{'id'} = $set{'from_id'};
5141                                }
5142                                if ($set{'id'} =~ m/0{40}/) {
5143                                        next;
5144                                }
5145                                push @files, \%set;
5146                        } elsif ($line =~ m/^([0-9a-fA-F]{40})$/){
5147                                if (%co) {
5148                                        if ($alternate) {
5149                                                print "<tr class=\"dark\">\n";
5150                                        } else {
5151                                                print "<tr class=\"light\">\n";
5152                                        }
5153                                        $alternate ^= 1;
5154                                        my $author = chop_and_escape_str($co{'author_name'}, 15, 5);
5155                                        print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
5156                                              "<td><i>" . $author . "</i></td>\n" .
5157                                              "<td>" .
5158                                              $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}),
5159                                                      -class => "list subject"},
5160                                                      chop_and_escape_str($co{'title'}, 50) . "<br/>");
5161                                        while (my $setref = shift @files) {
5162                                                my %set = %$setref;
5163                                                print $cgi->a({-href => href(action=>"blob", hash_base=>$co{'id'},
5164                                                                             hash=>$set{'id'}, file_name=>$set{'file'}),
5165                                                              -class => "list"},
5166                                                              "<span class=\"match\">" . esc_path($set{'file'}) . "</span>") .
5167                                                      "<br/>\n";
5168                                        }
5169                                        print "</td>\n" .
5170                                              "<td class=\"link\">" .
5171                                              $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})}, "commit") .
5172                                              " | " .
5173                                              $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$co{'id'})}, "tree");
5174                                        print "</td>\n" .
5175                                              "</tr>\n";
5176                                }
5177                                %co = parse_commit($1);
5178                        }
5179                }
5180                close $fd;
5181
5182                print "</table>\n";
5183        }
5184
5185        if ($searchtype eq 'grep') {
5186                git_print_page_nav('','', $hash,$co{'tree'},$hash);
5187                git_print_header_div('commit', esc_html($co{'title'}), $hash);
5188
5189                print "<table cellspacing=\"0\">\n";
5190                my $alternate = 1;
5191                my $matches = 0;
5192                $/ = "\n";
5193                open my $fd, "-|", git_cmd(), 'grep', '-n', '-i', '-E', $searchtext, $co{'tree'};
5194                my $lastfile = '';
5195                while (my $line = <$fd>) {
5196                        chomp $line;
5197                        my ($file, $lno, $ltext, $binary);
5198                        last if ($matches++ > 1000);
5199                        if ($line =~ /^Binary file (.+) matches$/) {
5200                                $file = $1;
5201                                $binary = 1;
5202                        } else {
5203                                (undef, $file, $lno, $ltext) = split(/:/, $line, 4);
5204                        }
5205                        if ($file ne $lastfile) {
5206                                $lastfile and print "</td></tr>\n";
5207                                if ($alternate++) {
5208                                        print "<tr class=\"dark\">\n";
5209                                } else {
5210                                        print "<tr class=\"light\">\n";
5211                                }
5212                                print "<td class=\"list\">".
5213                                        $cgi->a({-href => href(action=>"blob", hash=>$co{'hash'},
5214                                                               file_name=>"$file"),
5215                                                -class => "list"}, esc_path($file));
5216                                print "</td><td>\n";
5217                                $lastfile = $file;
5218                        }
5219                        if ($binary) {
5220                                print "<div class=\"binary\">Binary file</div>\n";
5221                        } else {
5222                                $ltext = untabify($ltext);
5223                                if ($ltext =~ m/^(.*)($searchtext)(.*)$/i) {
5224                                        $ltext = esc_html($1, -nbsp=>1);
5225                                        $ltext .= '<span class="match">';
5226                                        $ltext .= esc_html($2, -nbsp=>1);
5227                                        $ltext .= '</span>';
5228                                        $ltext .= esc_html($3, -nbsp=>1);
5229                                } else {
5230                                        $ltext = esc_html($ltext, -nbsp=>1);
5231                                }
5232                                print "<div class=\"pre\">" .
5233                                        $cgi->a({-href => href(action=>"blob", hash=>$co{'hash'},
5234                                                               file_name=>"$file").'#l'.$lno,
5235                                                -class => "linenr"}, sprintf('%4i', $lno))
5236                                        . ' ' .  $ltext . "</div>\n";
5237                        }
5238                }
5239                if ($lastfile) {
5240                        print "</td></tr>\n";
5241                        if ($matches > 1000) {
5242                                print "<div class=\"diff nodifferences\">Too many matches, listing trimmed</div>\n";
5243                        }
5244                } else {
5245                        print "<div class=\"diff nodifferences\">No matches found</div>\n";
5246                }
5247                close $fd;
5248
5249                print "</table>\n";
5250        }
5251        git_footer_html();
5252}
5253
5254sub git_search_help {
5255        git_header_html();
5256        git_print_page_nav('','', $hash,$hash,$hash);
5257        print <<EOT;
5258<dl>
5259<dt><b>commit</b></dt>
5260<dd>The commit messages and authorship information will be scanned for the given string.</dd>
5261EOT
5262        my ($have_grep) = gitweb_check_feature('grep');
5263        if ($have_grep) {
5264                print <<EOT;
5265<dt><b>grep</b></dt>
5266<dd>All files in the currently selected tree (HEAD unless you are explicitly browsing
5267    a different one) are searched for the given
5268<a href="http://en.wikipedia.org/wiki/Regular_expression">regular expression</a>
5269(POSIX extended) and the matches are listed. On large
5270trees, this search can take a while and put some strain on the server, so please use it with
5271some consideration.</dd>
5272EOT
5273        }
5274        print <<EOT;
5275<dt><b>author</b></dt>
5276<dd>Name and e-mail of the change author and date of birth of the patch will be scanned for the given string.</dd>
5277<dt><b>committer</b></dt>
5278<dd>Name and e-mail of the committer and date of commit will be scanned for the given string.</dd>
5279EOT
5280        my ($have_pickaxe) = gitweb_check_feature('pickaxe');
5281        if ($have_pickaxe) {
5282                print <<EOT;
5283<dt><b>pickaxe</b></dt>
5284<dd>All commits that caused the string to appear or disappear from any file (changes that
5285added, removed or "modified" the string) will be listed. This search can take a while and
5286takes a lot of strain on the server, so please use it wisely.</dd>
5287EOT
5288        }
5289        print "</dl>\n";
5290        git_footer_html();
5291}
5292
5293sub git_shortlog {
5294        my $head = git_get_head_hash($project);
5295        if (!defined $hash) {
5296                $hash = $head;
5297        }
5298        if (!defined $page) {
5299                $page = 0;
5300        }
5301        my $refs = git_get_references();
5302
5303        my @commitlist = parse_commits($hash, 101, (100 * $page));
5304
5305        my $paging_nav = format_paging_nav('shortlog', $hash, $head, $page, (100 * ($page+1)));
5306        my $next_link = '';
5307        if ($#commitlist >= 100) {
5308                $next_link =
5309                        $cgi->a({-href => href(-replay=>1, page=>$page+1),
5310                                 -accesskey => "n", -title => "Alt-n"}, "next");
5311        }
5312
5313        git_header_html();
5314        git_print_page_nav('shortlog','', $hash,$hash,$hash, $paging_nav);
5315        git_print_header_div('summary', $project);
5316
5317        git_shortlog_body(\@commitlist, 0, 99, $refs, $next_link);
5318
5319        git_footer_html();
5320}
5321
5322## ......................................................................
5323## feeds (RSS, Atom; OPML)
5324
5325sub git_feed {
5326        my $format = shift || 'atom';
5327        my ($have_blame) = gitweb_check_feature('blame');
5328
5329        # Atom: http://www.atomenabled.org/developers/syndication/
5330        # RSS:  http://www.notestips.com/80256B3A007F2692/1/NAMO5P9UPQ
5331        if ($format ne 'rss' && $format ne 'atom') {
5332                die_error(undef, "Unknown web feed format");
5333        }
5334
5335        # log/feed of current (HEAD) branch, log of given branch, history of file/directory
5336        my $head = $hash || 'HEAD';
5337        my @commitlist = parse_commits($head, 150, 0, undef, $file_name);
5338
5339        my %latest_commit;
5340        my %latest_date;
5341        my $content_type = "application/$format+xml";
5342        if (defined $cgi->http('HTTP_ACCEPT') &&
5343                 $cgi->Accept('text/xml') > $cgi->Accept($content_type)) {
5344                # browser (feed reader) prefers text/xml
5345                $content_type = 'text/xml';
5346        }
5347        if (defined($commitlist[0])) {
5348                %latest_commit = %{$commitlist[0]};
5349                %latest_date   = parse_date($latest_commit{'author_epoch'});
5350                print $cgi->header(
5351                        -type => $content_type,
5352                        -charset => 'utf-8',
5353                        -last_modified => $latest_date{'rfc2822'});
5354        } else {
5355                print $cgi->header(
5356                        -type => $content_type,
5357                        -charset => 'utf-8');
5358        }
5359
5360        # Optimization: skip generating the body if client asks only
5361        # for Last-Modified date.
5362        return if ($cgi->request_method() eq 'HEAD');
5363
5364        # header variables
5365        my $title = "$site_name - $project/$action";
5366        my $feed_type = 'log';
5367        if (defined $hash) {
5368                $title .= " - '$hash'";
5369                $feed_type = 'branch log';
5370                if (defined $file_name) {
5371                        $title .= " :: $file_name";
5372                        $feed_type = 'history';
5373                }
5374        } elsif (defined $file_name) {
5375                $title .= " - $file_name";
5376                $feed_type = 'history';
5377        }
5378        $title .= " $feed_type";
5379        my $descr = git_get_project_description($project);
5380        if (defined $descr) {
5381                $descr = esc_html($descr);
5382        } else {
5383                $descr = "$project " .
5384                         ($format eq 'rss' ? 'RSS' : 'Atom') .
5385                         " feed";
5386        }
5387        my $owner = git_get_project_owner($project);
5388        $owner = esc_html($owner);
5389
5390        #header
5391        my $alt_url;
5392        if (defined $file_name) {
5393                $alt_url = href(-full=>1, action=>"history", hash=>$hash, file_name=>$file_name);
5394        } elsif (defined $hash) {
5395                $alt_url = href(-full=>1, action=>"log", hash=>$hash);
5396        } else {
5397                $alt_url = href(-full=>1, action=>"summary");
5398        }
5399        print qq!<?xml version="1.0" encoding="utf-8"?>\n!;
5400        if ($format eq 'rss') {
5401                print <<XML;
5402<rss version="2.0" xmlns:content="http://purl.org/rss/1.0/modules/content/">
5403<channel>
5404XML
5405                print "<title>$title</title>\n" .
5406                      "<link>$alt_url</link>\n" .
5407                      "<description>$descr</description>\n" .
5408                      "<language>en</language>\n";
5409        } elsif ($format eq 'atom') {
5410                print <<XML;
5411<feed xmlns="http://www.w3.org/2005/Atom">
5412XML
5413                print "<title>$title</title>\n" .
5414                      "<subtitle>$descr</subtitle>\n" .
5415                      '<link rel="alternate" type="text/html" href="' .
5416                      $alt_url . '" />' . "\n" .
5417                      '<link rel="self" type="' . $content_type . '" href="' .
5418                      $cgi->self_url() . '" />' . "\n" .
5419                      "<id>" . href(-full=>1) . "</id>\n" .
5420                      # use project owner for feed author
5421                      "<author><name>$owner</name></author>\n";
5422                if (defined $favicon) {
5423                        print "<icon>" . esc_url($favicon) . "</icon>\n";
5424                }
5425                if (defined $logo_url) {
5426                        # not twice as wide as tall: 72 x 27 pixels
5427                        print "<logo>" . esc_url($logo) . "</logo>\n";
5428                }
5429                if (! %latest_date) {
5430                        # dummy date to keep the feed valid until commits trickle in:
5431                        print "<updated>1970-01-01T00:00:00Z</updated>\n";
5432                } else {
5433                        print "<updated>$latest_date{'iso-8601'}</updated>\n";
5434                }
5435        }
5436
5437        # contents
5438        for (my $i = 0; $i <= $#commitlist; $i++) {
5439                my %co = %{$commitlist[$i]};
5440                my $commit = $co{'id'};
5441                # we read 150, we always show 30 and the ones more recent than 48 hours
5442                if (($i >= 20) && ((time - $co{'author_epoch'}) > 48*60*60)) {
5443                        last;
5444                }
5445                my %cd = parse_date($co{'author_epoch'});
5446
5447                # get list of changed files
5448                open my $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
5449                        $co{'parent'} || "--root",
5450                        $co{'id'}, "--", (defined $file_name ? $file_name : ())
5451                        or next;
5452                my @difftree = map { chomp; $_ } <$fd>;
5453                close $fd
5454                        or next;
5455
5456                # print element (entry, item)
5457                my $co_url = href(-full=>1, action=>"commit", hash=>$commit);
5458                if ($format eq 'rss') {
5459                        print "<item>\n" .
5460                              "<title>" . esc_html($co{'title'}) . "</title>\n" .
5461                              "<author>" . esc_html($co{'author'}) . "</author>\n" .
5462                              "<pubDate>$cd{'rfc2822'}</pubDate>\n" .
5463                              "<guid isPermaLink=\"true\">$co_url</guid>\n" .
5464                              "<link>$co_url</link>\n" .
5465                              "<description>" . esc_html($co{'title'}) . "</description>\n" .
5466                              "<content:encoded>" .
5467                              "<![CDATA[\n";
5468                } elsif ($format eq 'atom') {
5469                        print "<entry>\n" .
5470                              "<title type=\"html\">" . esc_html($co{'title'}) . "</title>\n" .
5471                              "<updated>$cd{'iso-8601'}</updated>\n" .
5472                              "<author>\n" .
5473                              "  <name>" . esc_html($co{'author_name'}) . "</name>\n";
5474                        if ($co{'author_email'}) {
5475                                print "  <email>" . esc_html($co{'author_email'}) . "</email>\n";
5476                        }
5477                        print "</author>\n" .
5478                              # use committer for contributor
5479                              "<contributor>\n" .
5480                              "  <name>" . esc_html($co{'committer_name'}) . "</name>\n";
5481                        if ($co{'committer_email'}) {
5482                                print "  <email>" . esc_html($co{'committer_email'}) . "</email>\n";
5483                        }
5484                        print "</contributor>\n" .
5485                              "<published>$cd{'iso-8601'}</published>\n" .
5486                              "<link rel=\"alternate\" type=\"text/html\" href=\"$co_url\" />\n" .
5487                              "<id>$co_url</id>\n" .
5488                              "<content type=\"xhtml\" xml:base=\"" . esc_url($my_url) . "\">\n" .
5489                              "<div xmlns=\"http://www.w3.org/1999/xhtml\">\n";
5490                }
5491                my $comment = $co{'comment'};
5492                print "<pre>\n";
5493                foreach my $line (@$comment) {
5494                        $line = esc_html($line);
5495                        print "$line\n";
5496                }
5497                print "</pre><ul>\n";
5498                foreach my $difftree_line (@difftree) {
5499                        my %difftree = parse_difftree_raw_line($difftree_line);
5500                        next if !$difftree{'from_id'};
5501
5502                        my $file = $difftree{'file'} || $difftree{'to_file'};
5503
5504                        print "<li>" .
5505                              "[" .
5506                              $cgi->a({-href => href(-full=>1, action=>"blobdiff",
5507                                                     hash=>$difftree{'to_id'}, hash_parent=>$difftree{'from_id'},
5508                                                     hash_base=>$co{'id'}, hash_parent_base=>$co{'parent'},
5509                                                     file_name=>$file, file_parent=>$difftree{'from_file'}),
5510                                      -title => "diff"}, 'D');
5511                        if ($have_blame) {
5512                                print $cgi->a({-href => href(-full=>1, action=>"blame",
5513                                                             file_name=>$file, hash_base=>$commit),
5514                                              -title => "blame"}, 'B');
5515                        }
5516                        # if this is not a feed of a file history
5517                        if (!defined $file_name || $file_name ne $file) {
5518                                print $cgi->a({-href => href(-full=>1, action=>"history",
5519                                                             file_name=>$file, hash=>$commit),
5520                                              -title => "history"}, 'H');
5521                        }
5522                        $file = esc_path($file);
5523                        print "] ".
5524                              "$file</li>\n";
5525                }
5526                if ($format eq 'rss') {
5527                        print "</ul>]]>\n" .
5528                              "</content:encoded>\n" .
5529                              "</item>\n";
5530                } elsif ($format eq 'atom') {
5531                        print "</ul>\n</div>\n" .
5532                              "</content>\n" .
5533                              "</entry>\n";
5534                }
5535        }
5536
5537        # end of feed
5538        if ($format eq 'rss') {
5539                print "</channel>\n</rss>\n";
5540        }       elsif ($format eq 'atom') {
5541                print "</feed>\n";
5542        }
5543}
5544
5545sub git_rss {
5546        git_feed('rss');
5547}
5548
5549sub git_atom {
5550        git_feed('atom');
5551}
5552
5553sub git_opml {
5554        my @list = git_get_projects_list();
5555
5556        print $cgi->header(-type => 'text/xml', -charset => 'utf-8');
5557        print <<XML;
5558<?xml version="1.0" encoding="utf-8"?>
5559<opml version="1.0">
5560<head>
5561  <title>$site_name OPML Export</title>
5562</head>
5563<body>
5564<outline text="git RSS feeds">
5565XML
5566
5567        foreach my $pr (@list) {
5568                my %proj = %$pr;
5569                my $head = git_get_head_hash($proj{'path'});
5570                if (!defined $head) {
5571                        next;
5572                }
5573                $git_dir = "$projectroot/$proj{'path'}";
5574                my %co = parse_commit($head);
5575                if (!%co) {
5576                        next;
5577                }
5578
5579                my $path = esc_html(chop_str($proj{'path'}, 25, 5));
5580                my $rss  = "$my_url?p=$proj{'path'};a=rss";
5581                my $html = "$my_url?p=$proj{'path'};a=summary";
5582                print "<outline type=\"rss\" text=\"$path\" title=\"$path\" xmlUrl=\"$rss\" htmlUrl=\"$html\"/>\n";
5583        }
5584        print <<XML;
5585</outline>
5586</body>
5587</opml>
5588XML
5589}