gitweb/gitweb.perl

   1 #!/usr/bin/perl
   2
   3 # gitweb - simple web interface to track changes in git repositories
   4 #
   5 # (C) 2005-2006, Kay Sievers <kay.sievers@vrfy.org>
   6 # (C) 2005, Christian Gierke
   7 #
   8 # This program is licensed under the GPLv2
   9
  10 use strict;
  11 use warnings;
  12 use CGI qw(:standard :escapeHTML -nosticky);
  13 use CGI::Util qw(unescape);
  14 use CGI::Carp qw(fatalsToBrowser);
  15 use Encode;
  16 use Fcntl ':mode';
  17 use File::Find qw();
  18 use File::Basename qw(basename);
  19 binmode STDOUT, ':utf8';
  20
  21 our $cgi = new CGI;
  22 our $version = "++GIT_VERSION++";
  23 our $my_url = $cgi->url();
  24 our $my_uri = $cgi->url(-absolute => 1);
  25
  26 # core git executable to use
  27 # this can just be "git" if your webserver has a sensible PATH
  28 our $GIT = "++GIT_BINDIR++/git";
  29
  30 # absolute fs-path which will be prepended to the project path
  31 #our $projectroot = "/pub/scm";
  32 our $projectroot = "++GITWEB_PROJECTROOT++";
  33
  34 # target of the home link on top of all pages
  35 our $home_link = $my_uri || "/";
  36
  37 # string of the home link on top of all pages
  38 our $home_link_str = "++GITWEB_HOME_LINK_STR++";
  39
  40 # name of your site or organization to appear in page titles
  41 # replace this with something more descriptive for clearer bookmarks
  42 our $site_name = "++GITWEB_SITENAME++" || $ENV{'SERVER_NAME'} || "Untitled";
  43
  44 # html text to include at home page
  45 our $home_text = "++GITWEB_HOMETEXT++";
  46
  47 # URI of default stylesheet
  48 our $stylesheet = "++GITWEB_CSS++";
  49 # URI of GIT logo
  50 our $logo = "++GITWEB_LOGO++";
  51 # URI of GIT favicon, assumed to be image/png type
  52 our $favicon = "++GITWEB_FAVICON++";
  53
  54 # source of projects list
  55 our $projects_list = "++GITWEB_LIST++";
  56
  57 # list of git base URLs used for URL to where fetch project from,
  58 # i.e. full URL is "$git_base_url/$project"
  59 our @git_base_url_list = ("++GITWEB_BASE_URL++");
  60
  61 # default blob_plain mimetype and default charset for text/plain blob
  62 our $default_blob_plain_mimetype = 'text/plain';
  63 our $default_text_plain_charset  = undef;
  64
  65 # file to use for guessing MIME types before trying /etc/mime.types
  66 # (relative to the current git repository)
  67 our $mimetypes_file = undef;
  68
  69 # You define site-wide feature defaults here; override them with
  70 # $GITWEB_CONFIG as necessary.
  71 our %feature = (
  72         # feature => {
  73         #       'sub' => feature-sub (subroutine),
  74         #       'override' => allow-override (boolean),
  75         #       'default' => [ default options...] (array reference)}
  76         #
  77         # if feature is overridable (it means that allow-override has true value,
  78         # then feature-sub will be called with default options as parameters;
  79         # return value of feature-sub indicates if to enable specified feature,
  80         # and is taken to be current parameters of the feature
  81         #
  82         # use gitweb_check_feature(<feature>) to check if <feature> is enabled;
  83         # to be more exact to get current parameters of <feature>;
  84         # gitweb_check_feature(<feature>) returns array (list) of current options
  85
  86         'blame' => {
  87                 'sub' => \&feature_blame,
  88                 'override' => 0,
  89                 'default' => [0]},
  90
  91         'snapshot' => {
  92                 'sub' => \&feature_snapshot,
  93                 'override' => 0,
  94                 #         => [content-encoding, suffix, program]
  95                 'default' => ['x-gzip', 'gz', 'gzip']},
  96 );
  97
  98 sub gitweb_check_feature {
  99         my ($name) = @_;
 100         return undef unless exists $feature{$name};
 101         my ($sub, $override, @defaults) = (
 102                 $feature{$name}{'sub'},
 103                 $feature{$name}{'override'},
 104                 @{$feature{$name}{'default'}});
 105         if (!$override) { return @defaults; }
 106         return $sub->(@defaults);
 107 }
 108
 109 # To enable system wide have in $GITWEB_CONFIG
 110 # $feature{'blame'}{'default'} = [1];
 111 # To have project specific config enable override in $GITWEB_CONFIG
 112 # $feature{'blame'}{'override'} = 1;
 113 # and in project config gitweb.blame = 0|1;
 114
 115 sub feature_blame {
 116         my ($val) = git_get_project_config('blame', '--bool');
 117
 118         if ($val eq 'true') {
 119                 return (1);
 120         } elsif ($val eq 'false') {
 121                 return (0);
 122         }
 123
 124         return ($_[0]);
 125 }
 126
 127 # To disable system wide have in $GITWEB_CONFIG
 128 # $feature{'snapshot'}{'default'} = [undef];
 129 # To have project specific config enable override in $GITWEB_CONFIG
 130 # $feature{'blame'}{'override'} = 1;
 131 # and in project config  gitweb.snapshot = none|gzip|bzip2
 132
 133 sub feature_snapshot {
 134         my ($ctype, $suffix, $command) = @_;
 135
 136         my ($val) = git_get_project_config('snapshot');
 137
 138         if ($val eq 'gzip') {
 139                 return ('x-gzip', 'gz', 'gzip');
 140         } elsif ($val eq 'bzip2') {
 141                 return ('x-bzip2', 'bz2', 'bzip2');
 142         } elsif ($val eq 'none') {
 143                 return ();
 144         }
 145
 146         return ($ctype, $suffix, $command);
 147 }
 148
 149 # rename detection options for git-diff and git-diff-tree
 150 # - default is '-M', with the cost proportional to
 151 #   (number of removed files) * (number of new files).
 152 # - more costly is '-C' (or '-C', '-M'), with the cost proportional to
 153 #   (number of changed files + number of removed files) * (number of new files)
 154 # - even more costly is '-C', '--find-copies-harder' with cost
 155 #   (number of files in the original tree) * (number of new files)
 156 # - one might want to include '-B' option, e.g. '-B', '-M'
 157 our @diff_opts = ('-M'); # taken from git_commit
 158
 159 our $GITWEB_CONFIG = $ENV{'GITWEB_CONFIG'} || "++GITWEB_CONFIG++";
 160 require $GITWEB_CONFIG if -e $GITWEB_CONFIG;
 161
 162 # version of the core git binary
 163 our $git_version = qx($GIT --version) =~ m/git version (.*)$/ ? $1 : "unknown";
 164
 165 $projects_list ||= $projectroot;
 166
 167 # ======================================================================
 168 # input validation and dispatch
 169 our $action = $cgi->param('a');
 170 if (defined $action) {
 171         if ($action =~ m/[^0-9a-zA-Z\.\-_]/) {
 172                 die_error(undef, "Invalid action parameter");
 173         }
 174 }
 175
 176 our $project = ($cgi->param('p') || $ENV{'PATH_INFO'});
 177 if (defined $project) {
 178         $project =~ s|^/||;
 179         $project =~ s|/$||;
 180         $project = undef unless $project;
 181 }
 182 if (defined $project) {
 183         if (!validate_input($project)) {
 184                 die_error(undef, "Invalid project parameter");
 185         }
 186         if (!(-d "$projectroot/$project")) {
 187                 die_error(undef, "No such directory");
 188         }
 189         if (!(-e "$projectroot/$project/HEAD")) {
 190                 die_error(undef, "No such project");
 191         }
 192         $ENV{'GIT_DIR'} = "$projectroot/$project";
 193 }
 194
 195 our $file_name = $cgi->param('f');
 196 if (defined $file_name) {
 197         if (!validate_input($file_name)) {
 198                 die_error(undef, "Invalid file parameter");
 199         }
 200 }
 201
 202 our $file_parent = $cgi->param('fp');
 203 if (defined $file_parent) {
 204         if (!validate_input($file_parent)) {
 205                 die_error(undef, "Invalid file parent parameter");
 206         }
 207 }
 208
 209 our $hash = $cgi->param('h');
 210 if (defined $hash) {
 211         if (!validate_input($hash)) {
 212                 die_error(undef, "Invalid hash parameter");
 213         }
 214 }
 215
 216 our $hash_parent = $cgi->param('hp');
 217 if (defined $hash_parent) {
 218         if (!validate_input($hash_parent)) {
 219                 die_error(undef, "Invalid hash parent parameter");
 220         }
 221 }
 222
 223 our $hash_base = $cgi->param('hb');
 224 if (defined $hash_base) {
 225         if (!validate_input($hash_base)) {
 226                 die_error(undef, "Invalid hash base parameter");
 227         }
 228 }
 229
 230 our $hash_parent_base = $cgi->param('hpb');
 231 if (defined $hash_parent_base) {
 232         if (!validate_input($hash_parent_base)) {
 233                 die_error(undef, "Invalid hash parent base parameter");
 234         }
 235 }
 236
 237 our $page = $cgi->param('pg');
 238 if (defined $page) {
 239         if ($page =~ m/[^0-9]$/) {
 240                 die_error(undef, "Invalid page parameter");
 241         }
 242 }
 243
 244 our $searchtext = $cgi->param('s');
 245 if (defined $searchtext) {
 246         if ($searchtext =~ m/[^a-zA-Z0-9_\.\/\-\+\:\@ ]/) {
 247                 die_error(undef, "Invalid search parameter");
 248         }
 249         $searchtext = quotemeta $searchtext;
 250 }
 251
 252 # dispatch
 253 my %actions = (
 254         "blame" => \&git_blame2,
 255         "blobdiff" => \&git_blobdiff,
 256         "blobdiff_plain" => \&git_blobdiff_plain,
 257         "blob" => \&git_blob,
 258         "blob_plain" => \&git_blob_plain,
 259         "commitdiff" => \&git_commitdiff,
 260         "commitdiff_plain" => \&git_commitdiff_plain,
 261         "commit" => \&git_commit,
 262         "heads" => \&git_heads,
 263         "history" => \&git_history,
 264         "log" => \&git_log,
 265         "rss" => \&git_rss,
 266         "search" => \&git_search,
 267         "shortlog" => \&git_shortlog,
 268         "summary" => \&git_summary,
 269         "tag" => \&git_tag,
 270         "tags" => \&git_tags,
 271         "tree" => \&git_tree,
 272         "snapshot" => \&git_snapshot,
 273         # those below don't need $project
 274         "opml" => \&git_opml,
 275         "project_list" => \&git_project_list,
 276         "project_index" => \&git_project_index,
 277 );
 278
 279 if (defined $project) {
 280         $action ||= 'summary';
 281 } else {
 282         $action ||= 'project_list';
 283 }
 284 if (!defined($actions{$action})) {
 285         die_error(undef, "Unknown action");
 286 }
 287 $actions{$action}->();
 288 exit;
 289
 290 ## ======================================================================
 291 ## action links
 292
 293 sub href(%) {
 294         my %params = @_;
 295
 296         my @mapping = (
 297                 project => "p",
 298                 action => "a",
 299                 file_name => "f",
 300                 file_parent => "fp",
 301                 hash => "h",
 302                 hash_parent => "hp",
 303                 hash_base => "hb",
 304                 hash_parent_base => "hpb",
 305                 page => "pg",
 306                 searchtext => "s",
 307         );
 308         my %mapping = @mapping;
 309
 310         $params{"project"} ||= $project;
 311
 312         my @result = ();
 313         for (my $i = 0; $i < @mapping; $i += 2) {
 314                 my ($name, $symbol) = ($mapping[$i], $mapping[$i+1]);
 315                 if (defined $params{$name}) {
 316                         push @result, $symbol . "=" . esc_param($params{$name});
 317                 }
 318         }
 319         return "$my_uri?" . join(';', @result);
 320 }
 321
 322
 323 ## ======================================================================
 324 ## validation, quoting/unquoting and escaping
 325
 326 sub validate_input {
 327         my $input = shift;
 328
 329         if ($input =~ m/^[0-9a-fA-F]{40}$/) {
 330                 return $input;
 331         }
 332         if ($input =~ m/(^|\/)(|\.|\.\.)($|\/)/) {
 333                 return undef;
 334         }
 335         if ($input =~ m/[^a-zA-Z0-9_\x80-\xff\ \t\.\/\-\+\#\~\%]/) {
 336                 return undef;
 337         }
 338         return $input;
 339 }
 340
 341 # quote unsafe chars, but keep the slash, even when it's not
 342 # correct, but quoted slashes look too horrible in bookmarks
 343 sub esc_param {
 344         my $str = shift;
 345         $str =~ s/([^A-Za-z0-9\-_.~();\/;?:@&=])/sprintf("%%%02X", ord($1))/eg;
 346         $str =~ s/\+/%2B/g;
 347         $str =~ s/ /\+/g;
 348         return $str;
 349 }
 350
 351 # replace invalid utf8 character with SUBSTITUTION sequence
 352 sub esc_html {
 353         my $str = shift;
 354         $str = decode("utf8", $str, Encode::FB_DEFAULT);
 355         $str = escapeHTML($str);
 356         $str =~ s/\014/^L/g; # escape FORM FEED (FF) character (e.g. in COPYING file)
 357         return $str;
 358 }
 359
 360 # git may return quoted and escaped filenames
 361 sub unquote {
 362         my $str = shift;
 363         if ($str =~ m/^"(.*)"$/) {
 364                 $str = $1;
 365                 $str =~ s/\\([0-7]{1,3})/chr(oct($1))/eg;
 366         }
 367         return $str;
 368 }
 369
 370 # escape tabs (convert tabs to spaces)
 371 sub untabify {
 372         my $line = shift;
 373
 374         while ((my $pos = index($line, "\t")) != -1) {
 375                 if (my $count = (8 - ($pos % 8))) {
 376                         my $spaces = ' ' x $count;
 377                         $line =~ s/\t/$spaces/;
 378                 }
 379         }
 380
 381         return $line;
 382 }
 383
 384 ## ----------------------------------------------------------------------
 385 ## HTML aware string manipulation
 386
 387 sub chop_str {
 388         my $str = shift;
 389         my $len = shift;
 390         my $add_len = shift || 10;
 391
 392         # allow only $len chars, but don't cut a word if it would fit in $add_len
 393         # if it doesn't fit, cut it if it's still longer than the dots we would add
 394         $str =~ m/^(.{0,$len}[^ \/\-_:\.@]{0,$add_len})(.*)/;
 395         my $body = $1;
 396         my $tail = $2;
 397         if (length($tail) > 4) {
 398                 $tail = " ...";
 399                 $body =~ s/&[^;]*$//; # remove chopped character entities
 400         }
 401         return "$body$tail";
 402 }
 403
 404 ## ----------------------------------------------------------------------
 405 ## functions returning short strings
 406
 407 # CSS class for given age value (in seconds)
 408 sub age_class {
 409         my $age = shift;
 410
 411         if ($age < 60*60*2) {
 412                 return "age0";
 413         } elsif ($age < 60*60*24*2) {
 414                 return "age1";
 415         } else {
 416                 return "age2";
 417         }
 418 }
 419
 420 # convert age in seconds to "nn units ago" string
 421 sub age_string {
 422         my $age = shift;
 423         my $age_str;
 424
 425         if ($age > 60*60*24*365*2) {
 426                 $age_str = (int $age/60/60/24/365);
 427                 $age_str .= " years ago";
 428         } elsif ($age > 60*60*24*(365/12)*2) {
 429                 $age_str = int $age/60/60/24/(365/12);
 430                 $age_str .= " months ago";
 431         } elsif ($age > 60*60*24*7*2) {
 432                 $age_str = int $age/60/60/24/7;
 433                 $age_str .= " weeks ago";
 434         } elsif ($age > 60*60*24*2) {
 435                 $age_str = int $age/60/60/24;
 436                 $age_str .= " days ago";
 437         } elsif ($age > 60*60*2) {
 438                 $age_str = int $age/60/60;
 439                 $age_str .= " hours ago";
 440         } elsif ($age > 60*2) {
 441                 $age_str = int $age/60;
 442                 $age_str .= " min ago";
 443         } elsif ($age > 2) {
 444                 $age_str = int $age;
 445                 $age_str .= " sec ago";
 446         } else {
 447                 $age_str .= " right now";
 448         }
 449         return $age_str;
 450 }
 451
 452 # convert file mode in octal to symbolic file mode string
 453 sub mode_str {
 454         my $mode = oct shift;
 455
 456         if (S_ISDIR($mode & S_IFMT)) {
 457                 return 'drwxr-xr-x';
 458         } elsif (S_ISLNK($mode)) {
 459                 return 'lrwxrwxrwx';
 460         } elsif (S_ISREG($mode)) {
 461                 # git cares only about the executable bit
 462                 if ($mode & S_IXUSR) {
 463                         return '-rwxr-xr-x';
 464                 } else {
 465                         return '-rw-r--r--';
 466                 };
 467         } else {
 468                 return '----------';
 469         }
 470 }
 471
 472 # convert file mode in octal to file type string
 473 sub file_type {
 474         my $mode = shift;
 475
 476         if ($mode !~ m/^[0-7]+$/) {
 477                 return $mode;
 478         } else {
 479                 $mode = oct $mode;
 480         }
 481
 482         if (S_ISDIR($mode & S_IFMT)) {
 483                 return "directory";
 484         } elsif (S_ISLNK($mode)) {
 485                 return "symlink";
 486         } elsif (S_ISREG($mode)) {
 487                 return "file";
 488         } else {
 489                 return "unknown";
 490         }
 491 }
 492
 493 ## ----------------------------------------------------------------------
 494 ## functions returning short HTML fragments, or transforming HTML fragments
 495 ## which don't beling to other sections
 496
 497 # format line of commit message or tag comment
 498 sub format_log_line_html {
 499         my $line = shift;
 500
 501         $line = esc_html($line);
 502         $line =~ s/ /&nbsp;/g;
 503         if ($line =~ m/([0-9a-fA-F]{40})/) {
 504                 my $hash_text = $1;
 505                 if (git_get_type($hash_text) eq "commit") {
 506                         my $link =
 507                                 $cgi->a({-href => href(action=>"commit", hash=>$hash_text),
 508                                         -class => "text"}, $hash_text);
 509                         $line =~ s/$hash_text/$link/;
 510                 }
 511         }
 512         return $line;
 513 }
 514
 515 # format marker of refs pointing to given object
 516 sub format_ref_marker {
 517         my ($refs, $id) = @_;
 518         my $markers = '';
 519
 520         if (defined $refs->{$id}) {
 521                 foreach my $ref (@{$refs->{$id}}) {
 522                         my ($type, $name) = qw();
 523                         # e.g. tags/v2.6.11 or heads/next
 524                         if ($ref =~ m!^(.*?)s?/(.*)$!) {
 525                                 $type = $1;
 526                                 $name = $2;
 527                         } else {
 528                                 $type = "ref";
 529                                 $name = $ref;
 530                         }
 531
 532                         $markers .= " <span class=\"$type\">" . esc_html($name) . "</span>";
 533                 }
 534         }
 535
 536         if ($markers) {
 537                 return ' <span class="refs">'. $markers . '</span>';
 538         } else {
 539                 return "";
 540         }
 541 }
 542
 543 # format, perhaps shortened and with markers, title line
 544 sub format_subject_html {
 545         my ($long, $short, $href, $extra) = @_;
 546         $extra = '' unless defined($extra);
 547
 548         if (length($short) < length($long)) {
 549                 return $cgi->a({-href => $href, -class => "list subject",
 550                                 -title => $long},
 551                        esc_html($short) . $extra);
 552         } else {
 553                 return $cgi->a({-href => $href, -class => "list subject"},
 554                        esc_html($long)  . $extra);
 555         }
 556 }
 557
 558 sub format_diff_line {
 559         my $line = shift;
 560         my $char = substr($line, 0, 1);
 561         my $diff_class = "";
 562
 563         chomp $line;
 564
 565         if ($char eq '+') {
 566                 $diff_class = " add";
 567         } elsif ($char eq "-") {
 568                 $diff_class = " rem";
 569         } elsif ($char eq "@") {
 570                 $diff_class = " chunk_header";
 571         } elsif ($char eq "\\") {
 572                 $diff_class = " incomplete";
 573         }
 574         $line = untabify($line);
 575         return "<div class=\"diff$diff_class\">" . esc_html($line) . "</div>\n";
 576 }
 577
 578 ## ----------------------------------------------------------------------
 579 ## git utility subroutines, invoking git commands
 580
 581 # get HEAD ref of given project as hash
 582 sub git_get_head_hash {
 583         my $project = shift;
 584         my $oENV = $ENV{'GIT_DIR'};
 585         my $retval = undef;
 586         $ENV{'GIT_DIR'} = "$projectroot/$project";
 587         if (open my $fd, "-|", $GIT, "rev-parse", "--verify", "HEAD") {
 588                 my $head = <$fd>;
 589                 close $fd;
 590                 if (defined $head && $head =~ /^([0-9a-fA-F]{40})$/) {
 591                         $retval = $1;
 592                 }
 593         }
 594         if (defined $oENV) {
 595                 $ENV{'GIT_DIR'} = $oENV;
 596         }
 597         return $retval;
 598 }
 599
 600 # get type of given object
 601 sub git_get_type {
 602         my $hash = shift;
 603
 604         open my $fd, "-|", $GIT, "cat-file", '-t', $hash or return;
 605         my $type = <$fd>;
 606         close $fd or return;
 607         chomp $type;
 608         return $type;
 609 }
 610
 611 sub git_get_project_config {
 612         my ($key, $type) = @_;
 613
 614         return unless ($key);
 615         $key =~ s/^gitweb\.//;
 616         return if ($key =~ m/\W/);
 617
 618         my @x = ($GIT, 'repo-config');
 619         if (defined $type) { push @x, $type; }
 620         push @x, "--get";
 621         push @x, "gitweb.$key";
 622         my $val = qx(@x);
 623         chomp $val;
 624         return ($val);
 625 }
 626
 627 # get hash of given path at given ref
 628 sub git_get_hash_by_path {
 629         my $base = shift;
 630         my $path = shift || return undef;
 631
 632         my $tree = $base;
 633
 634         open my $fd, "-|", $GIT, "ls-tree", $base, "--", $path
 635                 or die_error(undef, "Open git-ls-tree failed");
 636         my $line = <$fd>;
 637         close $fd or return undef;
 638
 639         #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
 640         $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t(.+)$/;
 641         return $3;
 642 }
 643
 644 ## ......................................................................
 645 ## git utility functions, directly accessing git repository
 646
 647 # assumes that PATH is not symref
 648 sub git_get_hash_by_ref {
 649         my $path = shift;
 650
 651         open my $fd, "$projectroot/$path" or return undef;
 652         my $head = <$fd>;
 653         close $fd;
 654         chomp $head;
 655         if ($head =~ m/^[0-9a-fA-F]{40}$/) {
 656                 return $head;
 657         }
 658 }
 659
 660 sub git_get_project_description {
 661         my $path = shift;
 662
 663         open my $fd, "$projectroot/$path/description" or return undef;
 664         my $descr = <$fd>;
 665         close $fd;
 666         chomp $descr;
 667         return $descr;
 668 }
 669
 670 sub git_get_project_url_list {
 671         my $path = shift;
 672
 673         open my $fd, "$projectroot/$path/cloneurl" or return undef;
 674         my @git_project_url_list = map { chomp; $_ } <$fd>;
 675         close $fd;
 676
 677         return wantarray ? @git_project_url_list : \@git_project_url_list;
 678 }
 679
 680 sub git_get_projects_list {
 681         my @list;
 682
 683         if (-d $projects_list) {
 684                 # search in directory
 685                 my $dir = $projects_list;
 686                 opendir my ($dh), $dir or return undef;
 687                 while (my $dir = readdir($dh)) {
 688                         if (-e "$projectroot/$dir/HEAD") {
 689                                 my $pr = {
 690                                         path => $dir,
 691                                 };
 692                                 push @list, $pr
 693                         }
 694                 }
 695                 closedir($dh);
 696         } elsif (-f $projects_list) {
 697                 # read from file(url-encoded):
 698                 # 'git%2Fgit.git Linus+Torvalds'
 699                 # 'libs%2Fklibc%2Fklibc.git H.+Peter+Anvin'
 700                 # 'linux%2Fhotplug%2Fudev.git Greg+Kroah-Hartman'
 701                 open my ($fd), $projects_list or return undef;
 702                 while (my $line = <$fd>) {
 703                         chomp $line;
 704                         my ($path, $owner) = split ' ', $line;
 705                         $path = unescape($path);
 706                         $owner = unescape($owner);
 707                         if (!defined $path) {
 708                                 next;
 709                         }
 710                         if (-e "$projectroot/$path/HEAD") {
 711                                 my $pr = {
 712                                         path => $path,
 713                                         owner => decode("utf8", $owner, Encode::FB_DEFAULT),
 714                                 };
 715                                 push @list, $pr
 716                         }
 717                 }
 718                 close $fd;
 719         }
 720         @list = sort {$a->{'path'} cmp $b->{'path'}} @list;
 721         return @list;
 722 }
 723
 724 sub git_get_project_owner {
 725         my $project = shift;
 726         my $owner;
 727
 728         return undef unless $project;
 729
 730         # read from file (url-encoded):
 731         # 'git%2Fgit.git Linus+Torvalds'
 732         # 'libs%2Fklibc%2Fklibc.git H.+Peter+Anvin'
 733         # 'linux%2Fhotplug%2Fudev.git Greg+Kroah-Hartman'
 734         if (-f $projects_list) {
 735                 open (my $fd , $projects_list);
 736                 while (my $line = <$fd>) {
 737                         chomp $line;
 738                         my ($pr, $ow) = split ' ', $line;
 739                         $pr = unescape($pr);
 740                         $ow = unescape($ow);
 741                         if ($pr eq $project) {
 742                                 $owner = decode("utf8", $ow, Encode::FB_DEFAULT);
 743                                 last;
 744                         }
 745                 }
 746                 close $fd;
 747         }
 748         if (!defined $owner) {
 749                 $owner = get_file_owner("$projectroot/$project");
 750         }
 751
 752         return $owner;
 753 }
 754
 755 sub git_get_references {
 756         my $type = shift || "";
 757         my %refs;
 758         my $fd;
 759         # 5dc01c595e6c6ec9ccda4f6f69c131c0dd945f8c      refs/tags/v2.6.11
 760         # c39ae07f393806ccf406ef966e9a15afc43cc36a      refs/tags/v2.6.11^{}
 761         if (-f "$projectroot/$project/info/refs") {
 762                 open $fd, "$projectroot/$project/info/refs"
 763                         or return;
 764         } else {
 765                 open $fd, "-|", $GIT, "ls-remote", "."
 766                         or return;
 767         }
 768
 769         while (my $line = <$fd>) {
 770                 chomp $line;
 771                 if ($line =~ m/^([0-9a-fA-F]{40})\trefs\/($type\/?[^\^]+)/) {
 772                         if (defined $refs{$1}) {
 773                                 push @{$refs{$1}}, $2;
 774                         } else {
 775                                 $refs{$1} = [ $2 ];
 776                         }
 777                 }
 778         }
 779         close $fd or return;
 780         return \%refs;
 781 }
 782
 783 sub git_get_rev_name_tags {
 784         my $hash = shift || return undef;
 785
 786         open my $fd, "-|", $GIT, "name-rev", "--tags", $hash
 787                 or return;
 788         my $name_rev = <$fd>;
 789         close $fd;
 790
 791         if ($name_rev =~ m|^$hash tags/(.*)$|) {
 792                 return $1;
 793         } else {
 794                 # catches also '$hash undefined' output
 795                 return undef;
 796         }
 797 }
 798
 799 ## ----------------------------------------------------------------------
 800 ## parse to hash functions
 801
 802 sub parse_date {
 803         my $epoch = shift;
 804         my $tz = shift || "-0000";
 805
 806         my %date;
 807         my @months = ("Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec");
 808         my @days = ("Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat");
 809         my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($epoch);
 810         $date{'hour'} = $hour;
 811         $date{'minute'} = $min;
 812         $date{'mday'} = $mday;
 813         $date{'day'} = $days[$wday];
 814         $date{'month'} = $months[$mon];
 815         $date{'rfc2822'} = sprintf "%s, %d %s %4d %02d:%02d:%02d +0000",
 816                            $days[$wday], $mday, $months[$mon], 1900+$year, $hour ,$min, $sec;
 817         $date{'mday-time'} = sprintf "%d %s %02d:%02d",
 818                              $mday, $months[$mon], $hour ,$min;
 819
 820         $tz =~ m/^([+\-][0-9][0-9])([0-9][0-9])$/;
 821         my $local = $epoch + ((int $1 + ($2/60)) * 3600);
 822         ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($local);
 823         $date{'hour_local'} = $hour;
 824         $date{'minute_local'} = $min;
 825         $date{'tz_local'} = $tz;
 826         return %date;
 827 }
 828
 829 sub parse_tag {
 830         my $tag_id = shift;
 831         my %tag;
 832         my @comment;
 833
 834         open my $fd, "-|", $GIT, "cat-file", "tag", $tag_id or return;
 835         $tag{'id'} = $tag_id;
 836         while (my $line = <$fd>) {
 837                 chomp $line;
 838                 if ($line =~ m/^object ([0-9a-fA-F]{40})$/) {
 839                         $tag{'object'} = $1;
 840                 } elsif ($line =~ m/^type (.+)$/) {
 841                         $tag{'type'} = $1;
 842                 } elsif ($line =~ m/^tag (.+)$/) {
 843                         $tag{'name'} = $1;
 844                 } elsif ($line =~ m/^tagger (.*) ([0-9]+) (.*)$/) {
 845                         $tag{'author'} = $1;
 846                         $tag{'epoch'} = $2;
 847                         $tag{'tz'} = $3;
 848                 } elsif ($line =~ m/--BEGIN/) {
 849                         push @comment, $line;
 850                         last;
 851                 } elsif ($line eq "") {
 852                         last;
 853                 }
 854         }
 855         push @comment, <$fd>;
 856         $tag{'comment'} = \@comment;
 857         close $fd or return;
 858         if (!defined $tag{'name'}) {
 859                 return
 860         };
 861         return %tag
 862 }
 863
 864 sub parse_commit {
 865         my $commit_id = shift;
 866         my $commit_text = shift;
 867
 868         my @commit_lines;
 869         my %co;
 870
 871         if (defined $commit_text) {
 872                 @commit_lines = @$commit_text;
 873         } else {
 874                 $/ = "\0";
 875                 open my $fd, "-|", $GIT, "rev-list", "--header", "--parents", "--max-count=1", $commit_id
 876                         or return;
 877                 @commit_lines = split '\n', <$fd>;
 878                 close $fd or return;
 879                 $/ = "\n";
 880                 pop @commit_lines;
 881         }
 882         my $header = shift @commit_lines;
 883         if (!($header =~ m/^[0-9a-fA-F]{40}/)) {
 884                 return;
 885         }
 886         ($co{'id'}, my @parents) = split ' ', $header;
 887         $co{'parents'} = \@parents;
 888         $co{'parent'} = $parents[0];
 889         while (my $line = shift @commit_lines) {
 890                 last if $line eq "\n";
 891                 if ($line =~ m/^tree ([0-9a-fA-F]{40})$/) {
 892                         $co{'tree'} = $1;
 893                 } elsif ($line =~ m/^author (.*) ([0-9]+) (.*)$/) {
 894                         $co{'author'} = $1;
 895                         $co{'author_epoch'} = $2;
 896                         $co{'author_tz'} = $3;
 897                         if ($co{'author'} =~ m/^([^<]+) </) {
 898                                 $co{'author_name'} = $1;
 899                         } else {
 900                                 $co{'author_name'} = $co{'author'};
 901                         }
 902                 } elsif ($line =~ m/^committer (.*) ([0-9]+) (.*)$/) {
 903                         $co{'committer'} = $1;
 904                         $co{'committer_epoch'} = $2;
 905                         $co{'committer_tz'} = $3;
 906                         $co{'committer_name'} = $co{'committer'};
 907                         $co{'committer_name'} =~ s/ <.*//;
 908                 }
 909         }
 910         if (!defined $co{'tree'}) {
 911                 return;
 912         };
 913
 914         foreach my $title (@commit_lines) {
 915                 $title =~ s/^    //;
 916                 if ($title ne "") {
 917                         $co{'title'} = chop_str($title, 80, 5);
 918                         # remove leading stuff of merges to make the interesting part visible
 919                         if (length($title) > 50) {
 920                                 $title =~ s/^Automatic //;
 921                                 $title =~ s/^merge (of|with) /Merge ... /i;
 922                                 if (length($title) > 50) {
 923                                         $title =~ s/(http|rsync):\/\///;
 924                                 }
 925                                 if (length($title) > 50) {
 926                                         $title =~ s/(master|www|rsync)\.//;
 927                                 }
 928                                 if (length($title) > 50) {
 929                                         $title =~ s/kernel.org:?//;
 930                                 }
 931                                 if (length($title) > 50) {
 932                                         $title =~ s/\/pub\/scm//;
 933                                 }
 934                         }
 935                         $co{'title_short'} = chop_str($title, 50, 5);
 936                         last;
 937                 }
 938         }
 939         # remove added spaces
 940         foreach my $line (@commit_lines) {
 941                 $line =~ s/^    //;
 942         }
 943         $co{'comment'} = \@commit_lines;
 944
 945         my $age = time - $co{'committer_epoch'};
 946         $co{'age'} = $age;
 947         $co{'age_string'} = age_string($age);
 948         my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($co{'committer_epoch'});
 949         if ($age > 60*60*24*7*2) {
 950                 $co{'age_string_date'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
 951                 $co{'age_string_age'} = $co{'age_string'};
 952         } else {
 953                 $co{'age_string_date'} = $co{'age_string'};
 954                 $co{'age_string_age'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
 955         }
 956         return %co;
 957 }
 958
 959 # parse ref from ref_file, given by ref_id, with given type
 960 sub parse_ref {
 961         my $ref_file = shift;
 962         my $ref_id = shift;
 963         my $type = shift || git_get_type($ref_id);
 964         my %ref_item;
 965
 966         $ref_item{'type'} = $type;
 967         $ref_item{'id'} = $ref_id;
 968         $ref_item{'epoch'} = 0;
 969         $ref_item{'age'} = "unknown";
 970         if ($type eq "tag") {
 971                 my %tag = parse_tag($ref_id);
 972                 $ref_item{'comment'} = $tag{'comment'};
 973                 if ($tag{'type'} eq "commit") {
 974                         my %co = parse_commit($tag{'object'});
 975                         $ref_item{'epoch'} = $co{'committer_epoch'};
 976                         $ref_item{'age'} = $co{'age_string'};
 977                 } elsif (defined($tag{'epoch'})) {
 978                         my $age = time - $tag{'epoch'};
 979                         $ref_item{'epoch'} = $tag{'epoch'};
 980                         $ref_item{'age'} = age_string($age);
 981                 }
 982                 $ref_item{'reftype'} = $tag{'type'};
 983                 $ref_item{'name'} = $tag{'name'};
 984                 $ref_item{'refid'} = $tag{'object'};
 985         } elsif ($type eq "commit"){
 986                 my %co = parse_commit($ref_id);
 987                 $ref_item{'reftype'} = "commit";
 988                 $ref_item{'name'} = $ref_file;
 989                 $ref_item{'title'} = $co{'title'};
 990                 $ref_item{'refid'} = $ref_id;
 991                 $ref_item{'epoch'} = $co{'committer_epoch'};
 992                 $ref_item{'age'} = $co{'age_string'};
 993         } else {
 994                 $ref_item{'reftype'} = $type;
 995                 $ref_item{'name'} = $ref_file;
 996                 $ref_item{'refid'} = $ref_id;
 997         }
 998
 999         return %ref_item;
1000 }
1001
1002 # parse line of git-diff-tree "raw" output
1003 sub parse_difftree_raw_line {
1004         my $line = shift;
1005         my %res;
1006
1007         # ':100644 100644 03b218260e99b78c6df0ed378e59ed9205ccc96d 3b93d5e7cc7f7dd4ebed13a5cc1a4ad976fc94d8 M   ls-files.c'
1008         # ':100644 100644 7f9281985086971d3877aca27704f2aaf9c448ce bc190ebc71bbd923f2b728e505408f5e54bd073a M   rev-tree.c'
1009         if ($line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)([0-9]{0,3})\t(.*)$/) {
1010                 $res{'from_mode'} = $1;
1011                 $res{'to_mode'} = $2;
1012                 $res{'from_id'} = $3;
1013                 $res{'to_id'} = $4;
1014                 $res{'status'} = $5;
1015                 $res{'similarity'} = $6;
1016                 if ($res{'status'} eq 'R' || $res{'status'} eq 'C') { # renamed or copied
1017                         ($res{'from_file'}, $res{'to_file'}) = map { unquote($_) } split("\t", $7);
1018                 } else {
1019                         $res{'file'} = unquote($7);
1020                 }
1021         }
1022         # 'c512b523472485aef4fff9e57b229d9d243c967f'
1023         #elsif ($line =~ m/^([0-9a-fA-F]{40})$/) {
1024         #       $res{'commit'} = $1;
1025         #}
1026
1027         return wantarray ? %res : \%res;
1028 }
1029
1030 ## ......................................................................
1031 ## parse to array of hashes functions
1032
1033 sub git_get_refs_list {
1034         my $ref_dir = shift;
1035         my @reflist;
1036
1037         my @refs;
1038         my $pfxlen = length("$projectroot/$project/$ref_dir");
1039         File::Find::find(sub {
1040                 return if (/^\./);
1041                 if (-f $_) {
1042                         push @refs, substr($File::Find::name, $pfxlen + 1);
1043                 }
1044         }, "$projectroot/$project/$ref_dir");
1045
1046         foreach my $ref_file (@refs) {
1047                 my $ref_id = git_get_hash_by_ref("$project/$ref_dir/$ref_file");
1048                 my $type = git_get_type($ref_id) || next;
1049                 my %ref_item = parse_ref($ref_file, $ref_id, $type);
1050
1051                 push @reflist, \%ref_item;
1052         }
1053         # sort refs by age
1054         @reflist = sort {$b->{'epoch'} <=> $a->{'epoch'}} @reflist;
1055         return \@reflist;
1056 }
1057
1058 ## ----------------------------------------------------------------------
1059 ## filesystem-related functions
1060
1061 sub get_file_owner {
1062         my $path = shift;
1063
1064         my ($dev, $ino, $mode, $nlink, $st_uid, $st_gid, $rdev, $size) = stat($path);
1065         my ($name, $passwd, $uid, $gid, $quota, $comment, $gcos, $dir, $shell) = getpwuid($st_uid);
1066         if (!defined $gcos) {
1067                 return undef;
1068         }
1069         my $owner = $gcos;
1070         $owner =~ s/[,;].*$//;
1071         return decode("utf8", $owner, Encode::FB_DEFAULT);
1072 }
1073
1074 ## ......................................................................
1075 ## mimetype related functions
1076
1077 sub mimetype_guess_file {
1078         my $filename = shift;
1079         my $mimemap = shift;
1080         -r $mimemap or return undef;
1081
1082         my %mimemap;
1083         open(MIME, $mimemap) or return undef;
1084         while (<MIME>) {
1085                 next if m/^#/; # skip comments
1086                 my ($mime, $exts) = split(/\t+/);
1087                 if (defined $exts) {
1088                         my @exts = split(/\s+/, $exts);
1089                         foreach my $ext (@exts) {
1090                                 $mimemap{$ext} = $mime;
1091                         }
1092                 }
1093         }
1094         close(MIME);
1095
1096         $filename =~ /\.(.*?)$/;
1097         return $mimemap{$1};
1098 }
1099
1100 sub mimetype_guess {
1101         my $filename = shift;
1102         my $mime;
1103         $filename =~ /\./ or return undef;
1104
1105         if ($mimetypes_file) {
1106                 my $file = $mimetypes_file;
1107                 if ($file !~ m!^/!) { # if it is relative path
1108                         # it is relative to project
1109                         $file = "$projectroot/$project/$file";
1110                 }
1111                 $mime = mimetype_guess_file($filename, $file);
1112         }
1113         $mime ||= mimetype_guess_file($filename, '/etc/mime.types');
1114         return $mime;
1115 }
1116
1117 sub blob_mimetype {
1118         my $fd = shift;
1119         my $filename = shift;
1120
1121         if ($filename) {
1122                 my $mime = mimetype_guess($filename);
1123                 $mime and return $mime;
1124         }
1125
1126         # just in case
1127         return $default_blob_plain_mimetype unless $fd;
1128
1129         if (-T $fd) {
1130                 return 'text/plain' .
1131                        ($default_text_plain_charset ? '; charset='.$default_text_plain_charset : '');
1132         } elsif (! $filename) {
1133                 return 'application/octet-stream';
1134         } elsif ($filename =~ m/\.png$/i) {
1135                 return 'image/png';
1136         } elsif ($filename =~ m/\.gif$/i) {
1137                 return 'image/gif';
1138         } elsif ($filename =~ m/\.jpe?g$/i) {
1139                 return 'image/jpeg';
1140         } else {
1141                 return 'application/octet-stream';
1142         }
1143 }
1144
1145 ## ======================================================================
1146 ## functions printing HTML: header, footer, error page
1147
1148 sub git_header_html {
1149         my $status = shift || "200 OK";
1150         my $expires = shift;
1151
1152         my $title = "$site_name git";
1153         if (defined $project) {
1154                 $title .= " - $project";
1155                 if (defined $action) {
1156                         $title .= "/$action";
1157                         if (defined $file_name) {
1158                                 $title .= " - $file_name";
1159                                 if ($action eq "tree" && $file_name !~ m|/$|) {
1160                                         $title .= "/";
1161                                 }
1162                         }
1163                 }
1164         }
1165         my $content_type;
1166         # require explicit support from the UA if we are to send the page as
1167         # 'application/xhtml+xml', otherwise send it as plain old 'text/html'.
1168         # we have to do this because MSIE sometimes globs '*/*', pretending to
1169         # support xhtml+xml but choking when it gets what it asked for.
1170         if (defined $cgi->http('HTTP_ACCEPT') &&
1171             $cgi->http('HTTP_ACCEPT') =~ m/(,|;|\s|^)application\/xhtml\+xml(,|;|\s|$)/ &&
1172             $cgi->Accept('application/xhtml+xml') != 0) {
1173                 $content_type = 'application/xhtml+xml';
1174         } else {
1175                 $content_type = 'text/html';
1176         }
1177         print $cgi->header(-type=>$content_type, -charset => 'utf-8',
1178                            -status=> $status, -expires => $expires);
1179         print <<EOF;
1180 <?xml version="1.0" encoding="utf-8"?>
1181 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
1182 <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en-US" lang="en-US">
1183 <!-- git web interface version $version, (C) 2005-2006, Kay Sievers <kay.sievers\@vrfy.org>, Christian Gierke -->
1184 <!-- git core binaries version $git_version -->
1185 <head>
1186 <meta http-equiv="content-type" content="$content_type; charset=utf-8"/>
1187 <meta name="generator" content="gitweb/$version git/$git_version"/>
1188 <meta name="robots" content="index, nofollow"/>
1189 <title>$title</title>
1190 <link rel="stylesheet" type="text/css" href="$stylesheet"/>
1191 EOF
1192         if (defined $project) {
1193                 printf('<link rel="alternate" title="%s log" '.
1194                        'href="%s" type="application/rss+xml"/>'."\n",
1195                        esc_param($project), href(action=>"rss"));
1196         }
1197         if (defined $favicon) {
1198                 print qq(<link rel="shortcut icon" href="$favicon" type="image/png"/>\n);
1199         }
1200
1201         print "</head>\n" .
1202               "<body>\n" .
1203               "<div class=\"page_header\">\n" .
1204               "<a href=\"http://www.kernel.org/pub/software/scm/git/docs/\" title=\"git documentation\">" .
1205               "<img src=\"$logo\" width=\"72\" height=\"27\" alt=\"git\" style=\"float:right; border-width:0px;\"/>" .
1206               "</a>\n";
1207         print $cgi->a({-href => esc_param($home_link)}, $home_link_str) . " / ";
1208         if (defined $project) {
1209                 print $cgi->a({-href => href(action=>"summary")}, esc_html($project));
1210                 if (defined $action) {
1211                         print " / $action";
1212                 }
1213                 print "\n";
1214                 if (!defined $searchtext) {
1215                         $searchtext = "";
1216                 }
1217                 my $search_hash;
1218                 if (defined $hash_base) {
1219                         $search_hash = $hash_base;
1220                 } elsif (defined $hash) {
1221                         $search_hash = $hash;
1222                 } else {
1223                         $search_hash = "HEAD";
1224                 }
1225                 $cgi->param("a", "search");
1226                 $cgi->param("h", $search_hash);
1227                 print $cgi->startform(-method => "get", -action => $my_uri) .
1228                       "<div class=\"search\">\n" .
1229                       $cgi->hidden(-name => "p") . "\n" .
1230                       $cgi->hidden(-name => "a") . "\n" .
1231                       $cgi->hidden(-name => "h") . "\n" .
1232                       $cgi->textfield(-name => "s", -value => $searchtext) . "\n" .
1233                       "</div>" .
1234                       $cgi->end_form() . "\n";
1235         }
1236         print "</div>\n";
1237 }
1238
1239 sub git_footer_html {
1240         print "<div class=\"page_footer\">\n";
1241         if (defined $project) {
1242                 my $descr = git_get_project_description($project);
1243                 if (defined $descr) {
1244                         print "<div class=\"page_footer_text\">" . esc_html($descr) . "</div>\n";
1245                 }
1246                 print $cgi->a({-href => href(action=>"rss"), -class => "rss_logo"}, "RSS") . "\n";
1247         } else {
1248                 print $cgi->a({-href => href(action=>"opml"), -class => "rss_logo"}, "OPML") . "\n";
1249         }
1250         print "</div>\n" .
1251               "</body>\n" .
1252               "</html>";
1253 }
1254
1255 sub die_error {
1256         my $status = shift || "403 Forbidden";
1257         my $error = shift || "Malformed query, file missing or permission denied";
1258
1259         git_header_html($status);
1260         print <<EOF;
1261 <div class="page_body">
1262 <br /><br />
1263 $status - $error
1264 <br />
1265 </div>
1266 EOF
1267         git_footer_html();
1268         exit;
1269 }
1270
1271 ## ----------------------------------------------------------------------
1272 ## functions printing or outputting HTML: navigation
1273
1274 sub git_print_page_nav {
1275         my ($current, $suppress, $head, $treehead, $treebase, $extra) = @_;
1276         $extra = '' if !defined $extra; # pager or formats
1277
1278         my @navs = qw(summary shortlog log commit commitdiff tree);
1279         if ($suppress) {
1280                 @navs = grep { $_ ne $suppress } @navs;
1281         }
1282
1283         my %arg = map { $_ => {action=>$_} } @navs;
1284         if (defined $head) {
1285                 for (qw(commit commitdiff)) {
1286                         $arg{$_}{hash} = $head;
1287                 }
1288                 if ($current =~ m/^(tree | log | shortlog | commit | commitdiff | search)$/x) {
1289                         for (qw(shortlog log)) {
1290                                 $arg{$_}{hash} = $head;
1291                         }
1292                 }
1293         }
1294         $arg{tree}{hash} = $treehead if defined $treehead;
1295         $arg{tree}{hash_base} = $treebase if defined $treebase;
1296
1297         print "<div class=\"page_nav\">\n" .
1298                 (join " | ",
1299                  map { $_ eq $current ?
1300                        $_ : $cgi->a({-href => href(%{$arg{$_}})}, "$_")
1301                  } @navs);
1302         print "<br/>\n$extra<br/>\n" .
1303               "</div>\n";
1304 }
1305
1306 sub format_paging_nav {
1307         my ($action, $hash, $head, $page, $nrevs) = @_;
1308         my $paging_nav;
1309
1310
1311         if ($hash ne $head || $page) {
1312                 $paging_nav .= $cgi->a({-href => href(action=>$action)}, "HEAD");
1313         } else {
1314                 $paging_nav .= "HEAD";
1315         }
1316
1317         if ($page > 0) {
1318                 $paging_nav .= " &sdot; " .
1319                         $cgi->a({-href => href(action=>$action, hash=>$hash, page=>$page-1),
1320                                  -accesskey => "p", -title => "Alt-p"}, "prev");
1321         } else {
1322                 $paging_nav .= " &sdot; prev";
1323         }
1324
1325         if ($nrevs >= (100 * ($page+1)-1)) {
1326                 $paging_nav .= " &sdot; " .
1327                         $cgi->a({-href => href(action=>$action, hash=>$hash, page=>$page+1),
1328                                  -accesskey => "n", -title => "Alt-n"}, "next");
1329         } else {
1330                 $paging_nav .= " &sdot; next";
1331         }
1332
1333         return $paging_nav;
1334 }
1335
1336 ## ......................................................................
1337 ## functions printing or outputting HTML: div
1338
1339 sub git_print_header_div {
1340         my ($action, $title, $hash, $hash_base) = @_;
1341         my %args = ();
1342
1343         $args{action} = $action;
1344         $args{hash} = $hash if $hash;
1345         $args{hash_base} = $hash_base if $hash_base;
1346
1347         print "<div class=\"header\">\n" .
1348               $cgi->a({-href => href(%args), -class => "title"},
1349               $title ? $title : $action) .
1350               "\n</div>\n";
1351 }
1352
1353 #sub git_print_authorship (\%) {
1354 sub git_print_authorship {
1355         my $co = shift;
1356
1357         my %ad = parse_date($co->{'author_epoch'}, $co->{'author_tz'});
1358         print "<div class=\"author_date\">" .
1359               esc_html($co->{'author_name'}) .
1360               " [$ad{'rfc2822'}";
1361         if ($ad{'hour_local'} < 6) {
1362                 printf(" (<span class=\"atnight\">%02d:%02d</span> %s)",
1363                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
1364         } else {
1365                 printf(" (%02d:%02d %s)",
1366                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
1367         }
1368         print "]</div>\n";
1369 }
1370
1371 sub git_print_page_path {
1372         my $name = shift;
1373         my $type = shift;
1374         my $hb = shift;
1375
1376         if (!defined $name) {
1377                 print "<div class=\"page_path\">/</div>\n";
1378         } else {
1379                 my @dirname = split '/', $name;
1380                 my $basename = pop @dirname;
1381                 my $fullname = '';
1382
1383                 print "<div class=\"page_path\">";
1384                 foreach my $dir (@dirname) {
1385                         $fullname .= $dir . '/';
1386                         print $cgi->a({-href => href(action=>"tree", file_name=>$fullname,
1387                                                      hash_base=>$hb),
1388                                       -title => $fullname}, esc_html($dir));
1389                         print "/";
1390                 }
1391                 if (defined $type && $type eq 'blob') {
1392                         print $cgi->a({-href => href(action=>"blob_plain", file_name=>$file_name,
1393                                                      hash_base=>$hb),
1394                                       -title => $name}, esc_html($basename));
1395                 } elsif (defined $type && $type eq 'tree') {
1396                         print $cgi->a({-href => href(action=>"tree", file_name=>$file_name,
1397                                                      hash_base=>$hb),
1398                                       -title => $name}, esc_html($basename));
1399                         print "/";
1400                 } else {
1401                         print esc_html($basename);
1402                 }
1403                 print "<br/></div>\n";
1404         }
1405 }
1406
1407 # sub git_print_log (\@;%) {
1408 sub git_print_log ($;%) {
1409         my $log = shift;
1410         my %opts = @_;
1411
1412         if ($opts{'-remove_title'}) {
1413                 # remove title, i.e. first line of log
1414                 shift @$log;
1415         }
1416         # remove leading empty lines
1417         while (defined $log->[0] && $log->[0] eq "") {
1418                 shift @$log;
1419         }
1420
1421         # print log
1422         my $signoff = 0;
1423         my $empty = 0;
1424         foreach my $line (@$log) {
1425                 if ($line =~ m/^ *(signed[ \-]off[ \-]by[ :]|acked[ \-]by[ :]|cc[ :])/i) {
1426                         $signoff = 1;
1427                         $empty = 0;
1428                         if (! $opts{'-remove_signoff'}) {
1429                                 print "<span class=\"signoff\">" . esc_html($line) . "</span><br/>\n";
1430                                 next;
1431                         } else {
1432                                 # remove signoff lines
1433                                 next;
1434                         }
1435                 } else {
1436                         $signoff = 0;
1437                 }
1438
1439                 # print only one empty line
1440                 # do not print empty line after signoff
1441                 if ($line eq "") {
1442                         next if ($empty || $signoff);
1443                         $empty = 1;
1444                 } else {
1445                         $empty = 0;
1446                 }
1447
1448                 print format_log_line_html($line) . "<br/>\n";
1449         }
1450
1451         if ($opts{'-final_empty_line'}) {
1452                 # end with single empty line
1453                 print "<br/>\n" unless $empty;
1454         }
1455 }
1456
1457 sub git_print_simplified_log {
1458         my $log = shift;
1459         my $remove_title = shift;
1460
1461         git_print_log($log,
1462                 -final_empty_line=> 1,
1463                 -remove_title => $remove_title);
1464 }
1465
1466 ## ......................................................................
1467 ## functions printing large fragments of HTML
1468
1469 sub git_difftree_body {
1470         my ($difftree, $hash, $parent) = @_;
1471
1472         print "<div class=\"list_head\">\n";
1473         if ($#{$difftree} > 10) {
1474                 print(($#{$difftree} + 1) . " files changed:\n");
1475         }
1476         print "</div>\n";
1477
1478         print "<table class=\"diff_tree\">\n";
1479         my $alternate = 0;
1480         my $patchno = 0;
1481         foreach my $line (@{$difftree}) {
1482                 my %diff = parse_difftree_raw_line($line);
1483
1484                 if ($alternate) {
1485                         print "<tr class=\"dark\">\n";
1486                 } else {
1487                         print "<tr class=\"light\">\n";
1488                 }
1489                 $alternate ^= 1;
1490
1491                 my ($to_mode_oct, $to_mode_str, $to_file_type);
1492                 my ($from_mode_oct, $from_mode_str, $from_file_type);
1493                 if ($diff{'to_mode'} ne ('0' x 6)) {
1494                         $to_mode_oct = oct $diff{'to_mode'};
1495                         if (S_ISREG($to_mode_oct)) { # only for regular file
1496                                 $to_mode_str = sprintf("%04o", $to_mode_oct & 0777); # permission bits
1497                         }
1498                         $to_file_type = file_type($diff{'to_mode'});
1499                 }
1500                 if ($diff{'from_mode'} ne ('0' x 6)) {
1501                         $from_mode_oct = oct $diff{'from_mode'};
1502                         if (S_ISREG($to_mode_oct)) { # only for regular file
1503                                 $from_mode_str = sprintf("%04o", $from_mode_oct & 0777); # permission bits
1504                         }
1505                         $from_file_type = file_type($diff{'from_mode'});
1506                 }
1507
1508                 if ($diff{'status'} eq "A") { # created
1509                         my $mode_chng = "<span class=\"file_status new\">[new $to_file_type";
1510                         $mode_chng   .= " with mode: $to_mode_str" if $to_mode_str;
1511                         $mode_chng   .= "]</span>";
1512                         print "<td>" .
1513                               $cgi->a({-href => href(action=>"blob", hash=>$diff{'to_id'},
1514                                                      hash_base=>$hash, file_name=>$diff{'file'}),
1515                                       -class => "list"}, esc_html($diff{'file'})) .
1516                               "</td>\n" .
1517                               "<td>$mode_chng</td>\n" .
1518                               "<td class=\"link\">" .
1519                               $cgi->a({-href => href(action=>"blob", hash=>$diff{'to_id'},
1520                                                      hash_base=>$hash, file_name=>$diff{'file'})},
1521                                       "blob");
1522                         if ($action eq 'commitdiff') {
1523                                 # link to patch
1524                                 $patchno++;
1525                                 print " | " .
1526                                       $cgi->a({-href => "#patch$patchno"}, "patch");
1527                         }
1528                         print "</td>\n";
1529
1530                 } elsif ($diff{'status'} eq "D") { # deleted
1531                         my $mode_chng = "<span class=\"file_status deleted\">[deleted $from_file_type]</span>";
1532                         print "<td>" .
1533                               $cgi->a({-href => href(action=>"blob", hash=>$diff{'from_id'},
1534                                                      hash_base=>$parent, file_name=>$diff{'file'}),
1535                                        -class => "list"}, esc_html($diff{'file'})) .
1536                               "</td>\n" .
1537                               "<td>$mode_chng</td>\n" .
1538                               "<td class=\"link\">" .
1539                               $cgi->a({-href => href(action=>"blob", hash=>$diff{'from_id'},
1540                                                      hash_base=>$parent, file_name=>$diff{'file'})},
1541                                       "blob") .
1542                               " | ";
1543                         if ($action eq 'commitdiff') {
1544                                 # link to patch
1545                                 $patchno++;
1546                                 print " | " .
1547                                       $cgi->a({-href => "#patch$patchno"}, "patch");
1548                         }
1549                         print $cgi->a({-href => href(action=>"history", hash_base=>$parent,
1550                                                      file_name=>$diff{'file'})},
1551                                       "history") .
1552                               "</td>\n";
1553
1554                 } elsif ($diff{'status'} eq "M" || $diff{'status'} eq "T") { # modified, or type changed
1555                         my $mode_chnge = "";
1556                         if ($diff{'from_mode'} != $diff{'to_mode'}) {
1557                                 $mode_chnge = "<span class=\"file_status mode_chnge\">[changed";
1558                                 if ($from_file_type != $to_file_type) {
1559                                         $mode_chnge .= " from $from_file_type to $to_file_type";
1560                                 }
1561                                 if (($from_mode_oct & 0777) != ($to_mode_oct & 0777)) {
1562                                         if ($from_mode_str && $to_mode_str) {
1563                                                 $mode_chnge .= " mode: $from_mode_str->$to_mode_str";
1564                                         } elsif ($to_mode_str) {
1565                                                 $mode_chnge .= " mode: $to_mode_str";
1566                                         }
1567                                 }
1568                                 $mode_chnge .= "]</span>\n";
1569                         }
1570                         print "<td>";
1571                         if ($diff{'to_id'} ne $diff{'from_id'}) { # modified
1572                                 print $cgi->a({-href => href(action=>"blobdiff",
1573                                                              hash=>$diff{'to_id'}, hash_parent=>$diff{'from_id'},
1574                                                              hash_base=>$hash, hash_parent_base=>$parent,
1575                                                              file_name=>$diff{'file'}),
1576                                               -class => "list"}, esc_html($diff{'file'}));
1577                         } else { # only mode changed
1578                                 print $cgi->a({-href => href(action=>"blob", hash=>$diff{'to_id'},
1579                                                              hash_base=>$hash, file_name=>$diff{'file'}),
1580                                               -class => "list"}, esc_html($diff{'file'}));
1581                         }
1582                         print "</td>\n" .
1583                               "<td>$mode_chnge</td>\n" .
1584                               "<td class=\"link\">" .
1585                               $cgi->a({-href => href(action=>"blob", hash=>$diff{'to_id'},
1586                                                      hash_base=>$hash, file_name=>$diff{'file'})},
1587                                       "blob");
1588                         if ($diff{'to_id'} ne $diff{'from_id'}) { # modified
1589                                 if ($action eq 'commitdiff') {
1590                                         # link to patch
1591                                         $patchno++;
1592                                         print " | " .
1593                                                 $cgi->a({-href => "#patch$patchno"}, "patch");
1594                                 } else {
1595                                         print " | " .
1596                                                 $cgi->a({-href => href(action=>"blobdiff",
1597                                                                        hash=>$diff{'to_id'}, hash_parent=>$diff{'from_id'},
1598                                                                        hash_base=>$hash, hash_parent_base=>$parent,
1599                                                                        file_name=>$diff{'file'})},
1600                                                         "diff");
1601                                 }
1602                         }
1603                         print " | " .
1604                                 $cgi->a({-href => href(action=>"history",
1605                                                        hash_base=>$hash, file_name=>$diff{'file'})},
1606                                         "history");
1607                         print "</td>\n";
1608
1609                 } elsif ($diff{'status'} eq "R" || $diff{'status'} eq "C") { # renamed or copied
1610                         my %status_name = ('R' => 'moved', 'C' => 'copied');
1611                         my $nstatus = $status_name{$diff{'status'}};
1612                         my $mode_chng = "";
1613                         if ($diff{'from_mode'} != $diff{'to_mode'}) {
1614                                 # mode also for directories, so we cannot use $to_mode_str
1615                                 $mode_chng = sprintf(", mode: %04o", $to_mode_oct & 0777);
1616                         }
1617                         print "<td>" .
1618                               $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
1619                                                      hash=>$diff{'to_id'}, file_name=>$diff{'to_file'}),
1620                                       -class => "list"}, esc_html($diff{'to_file'})) . "</td>\n" .
1621                               "<td><span class=\"file_status $nstatus\">[$nstatus from " .
1622                               $cgi->a({-href => href(action=>"blob", hash_base=>$parent,
1623                                                      hash=>$diff{'from_id'}, file_name=>$diff{'from_file'}),
1624                                       -class => "list"}, esc_html($diff{'from_file'})) .
1625                               " with " . (int $diff{'similarity'}) . "% similarity$mode_chng]</span></td>\n" .
1626                               "<td class=\"link\">" .
1627                               $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
1628                                                      hash=>$diff{'to_id'}, file_name=>$diff{'to_file'})},
1629                                       "blob");
1630                         if ($diff{'to_id'} ne $diff{'from_id'}) {
1631                                 if ($action eq 'commitdiff') {
1632                                         # link to patch
1633                                         $patchno++;
1634                                         print " | " .
1635                                                 $cgi->a({-href => "#patch$patchno"}, "patch");
1636                                 } else {
1637                                         print " | " .
1638                                                 $cgi->a({-href => href(action=>"blobdiff",
1639                                                                        hash=>$diff{'to_id'}, hash_parent=>$diff{'from_id'},
1640                                                                        hash_base=>$hash, hash_parent_base=>$parent,
1641                                                                        file_name=>$diff{'to_file'}, file_parent=>$diff{'from_file'})},
1642                                                         "diff");
1643                                 }
1644                         }
1645                         print "</td>\n";
1646
1647                 } # we should not encounter Unmerged (U) or Unknown (X) status
1648                 print "</tr>\n";
1649         }
1650         print "</table>\n";
1651 }
1652
1653 sub git_patchset_body {
1654         my ($fd, $difftree, $hash, $hash_parent) = @_;
1655
1656         my $patch_idx = 0;
1657         my $in_header = 0;
1658         my $patch_found = 0;
1659         my $diffinfo;
1660
1661         print "<div class=\"patchset\">\n";
1662
1663         LINE:
1664         while (my $patch_line = <$fd>) {
1665                 chomp $patch_line;
1666
1667                 if ($patch_line =~ m/^diff /) { # "git diff" header
1668                         # beginning of patch (in patchset)
1669                         if ($patch_found) {
1670                                 # close previous patch
1671                                 print "</div>\n"; # class="patch"
1672                         } else {
1673                                 # first patch in patchset
1674                                 $patch_found = 1;
1675                         }
1676                         print "<div class=\"patch\" id=\"patch". ($patch_idx+1) ."\">\n";
1677
1678                         if (ref($difftree->[$patch_idx]) eq "HASH") {
1679                                 $diffinfo = $difftree->[$patch_idx];
1680                         } else {
1681                                 $diffinfo = parse_difftree_raw_line($difftree->[$patch_idx]);
1682                         }
1683                         $patch_idx++;
1684
1685                         # for now, no extended header, hence we skip empty patches
1686                         # companion to  next LINE if $in_header;
1687                         if ($diffinfo->{'from_id'} eq $diffinfo->{'to_id'}) { # no change
1688                                 $in_header = 1;
1689                                 next LINE;
1690                         }
1691
1692                         if ($diffinfo->{'status'} eq "A") { # added
1693                                 print "<div class=\"diff_info\">" . file_type($diffinfo->{'to_mode'}) . ":" .
1694                                       $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
1695                                                              hash=>$diffinfo->{'to_id'}, file_name=>$diffinfo->{'file'})},
1696                                               $diffinfo->{'to_id'}) . "(new)" .
1697                                       "</div>\n"; # class="diff_info"
1698
1699                         } elsif ($diffinfo->{'status'} eq "D") { # deleted
1700                                 print "<div class=\"diff_info\">" . file_type($diffinfo->{'from_mode'}) . ":" .
1701                                       $cgi->a({-href => href(action=>"blob", hash_base=>$hash_parent,
1702                                                              hash=>$diffinfo->{'from_id'}, file_name=>$diffinfo->{'file'})},
1703                                               $diffinfo->{'from_id'}) . "(deleted)" .
1704                                       "</div>\n"; # class="diff_info"
1705
1706                         } elsif ($diffinfo->{'status'} eq "R" || # renamed
1707                                  $diffinfo->{'status'} eq "C" || # copied
1708                                  $diffinfo->{'status'} eq "2") { # with two filenames (from git_blobdiff)
1709                                 print "<div class=\"diff_info\">" .
1710                                       file_type($diffinfo->{'from_mode'}) . ":" .
1711                                       $cgi->a({-href => href(action=>"blob", hash_base=>$hash_parent,
1712                                                              hash=>$diffinfo->{'from_id'}, file_name=>$diffinfo->{'from_file'})},
1713                                               $diffinfo->{'from_id'}) .
1714                                       " -> " .
1715                                       file_type($diffinfo->{'to_mode'}) . ":" .
1716                                       $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
1717                                                              hash=>$diffinfo->{'to_id'}, file_name=>$diffinfo->{'to_file'})},
1718                                               $diffinfo->{'to_id'});
1719                                 print "</div>\n"; # class="diff_info"
1720
1721                         } else { # modified, mode changed, ...
1722                                 print "<div class=\"diff_info\">" .
1723                                       file_type($diffinfo->{'from_mode'}) . ":" .
1724                                       $cgi->a({-href => href(action=>"blob", hash_base=>$hash_parent,
1725                                                              hash=>$diffinfo->{'from_id'}, file_name=>$diffinfo->{'file'})},
1726                                               $diffinfo->{'from_id'}) .
1727                                       " -> " .
1728                                       file_type($diffinfo->{'to_mode'}) . ":" .
1729                                       $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
1730                                                              hash=>$diffinfo->{'to_id'}, file_name=>$diffinfo->{'file'})},
1731                                               $diffinfo->{'to_id'});
1732                                 print "</div>\n"; # class="diff_info"
1733                         }
1734
1735                         #print "<div class=\"diff extended_header\">\n";
1736                         $in_header = 1;
1737                         next LINE;
1738                 } # start of patch in patchset
1739
1740
1741                 if ($in_header && $patch_line =~ m/^---/) {
1742                         #print "</div>\n"; # class="diff extended_header"
1743                         $in_header = 0;
1744
1745                         my $file = $diffinfo->{'from_file'};
1746                         $file  ||= $diffinfo->{'file'};
1747                         $file = $cgi->a({-href => href(action=>"blob", hash_base=>$hash_parent,
1748                                                        hash=>$diffinfo->{'from_id'}, file_name=>$file),
1749                                         -class => "list"}, esc_html($file));
1750                         $patch_line =~ s|a/.*$|a/$file|g;
1751                         print "<div class=\"diff from_file\">$patch_line</div>\n";
1752
1753                         $patch_line = <$fd>;
1754                         chomp $patch_line;
1755
1756                         #$patch_line =~ m/^+++/;
1757                         $file    = $diffinfo->{'to_file'};
1758                         $file  ||= $diffinfo->{'file'};
1759                         $file = $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
1760                                                        hash=>$diffinfo->{'to_id'}, file_name=>$file),
1761                                         -class => "list"}, esc_html($file));
1762                         $patch_line =~ s|b/.*|b/$file|g;
1763                         print "<div class=\"diff to_file\">$patch_line</div>\n";
1764
1765                         next LINE;
1766                 }
1767                 next LINE if $in_header;
1768
1769                 print format_diff_line($patch_line);
1770         }
1771         print "</div>\n" if $patch_found; # class="patch"
1772
1773         print "</div>\n"; # class="patchset"
1774 }
1775
1776 # . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1777
1778 sub git_shortlog_body {
1779         # uses global variable $project
1780         my ($revlist, $from, $to, $refs, $extra) = @_;
1781
1782         my ($ctype, $suffix, $command) = gitweb_check_feature('snapshot');
1783         my $have_snapshot = (defined $ctype && defined $suffix);
1784
1785         $from = 0 unless defined $from;
1786         $to = $#{$revlist} if (!defined $to || $#{$revlist} < $to);
1787
1788         print "<table class=\"shortlog\" cellspacing=\"0\">\n";
1789         my $alternate = 0;
1790         for (my $i = $from; $i <= $to; $i++) {
1791                 my $commit = $revlist->[$i];
1792                 #my $ref = defined $refs ? format_ref_marker($refs, $commit) : '';
1793                 my $ref = format_ref_marker($refs, $commit);
1794                 my %co = parse_commit($commit);
1795                 if ($alternate) {
1796                         print "<tr class=\"dark\">\n";
1797                 } else {
1798                         print "<tr class=\"light\">\n";
1799                 }
1800                 $alternate ^= 1;
1801                 # git_summary() used print "<td><i>$co{'age_string'}</i></td>\n" .
1802                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
1803                       "<td><i>" . esc_html(chop_str($co{'author_name'}, 10)) . "</i></td>\n" .
1804                       "<td>";
1805                 print format_subject_html($co{'title'}, $co{'title_short'},
1806                                           href(action=>"commit", hash=>$commit), $ref);
1807                 print "</td>\n" .
1808                       "<td class=\"link\">" .
1809                       $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") . " | " .
1810                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff");
1811                 if ($have_snapshot) {
1812                         print " | " .  $cgi->a({-href => href(action=>"snapshot", hash=>$commit)}, "snapshot");
1813                 }
1814                 print "</td>\n" .
1815                       "</tr>\n";
1816         }
1817         if (defined $extra) {
1818                 print "<tr>\n" .
1819                       "<td colspan=\"4\">$extra</td>\n" .
1820                       "</tr>\n";
1821         }
1822         print "</table>\n";
1823 }
1824
1825 sub git_history_body {
1826         # Warning: assumes constant type (blob or tree) during history
1827         my ($fd, $refs, $hash_base, $ftype, $extra) = @_;
1828
1829         print "<table class=\"history\" cellspacing=\"0\">\n";
1830         my $alternate = 0;
1831         while (my $line = <$fd>) {
1832                 if ($line !~ m/^([0-9a-fA-F]{40})/) {
1833                         next;
1834                 }
1835
1836                 my $commit = $1;
1837                 my %co = parse_commit($commit);
1838                 if (!%co) {
1839                         next;
1840                 }
1841
1842                 my $ref = format_ref_marker($refs, $commit);
1843
1844                 if ($alternate) {
1845                         print "<tr class=\"dark\">\n";
1846                 } else {
1847                         print "<tr class=\"light\">\n";
1848                 }
1849                 $alternate ^= 1;
1850                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
1851                       # shortlog uses      chop_str($co{'author_name'}, 10)
1852                       "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 3)) . "</i></td>\n" .
1853                       "<td>";
1854                 # originally git_history used chop_str($co{'title'}, 50)
1855                 print format_subject_html($co{'title'}, $co{'title_short'},
1856                                           href(action=>"commit", hash=>$commit), $ref);
1857                 print "</td>\n" .
1858                       "<td class=\"link\">" .
1859                       $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") . " | " .
1860                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") . " | " .
1861                       $cgi->a({-href => href(action=>$ftype, hash_base=>$commit, file_name=>$file_name)}, $ftype);
1862
1863                 if ($ftype eq 'blob') {
1864                         my $blob_current = git_get_hash_by_path($hash_base, $file_name);
1865                         my $blob_parent  = git_get_hash_by_path($commit, $file_name);
1866                         if (defined $blob_current && defined $blob_parent &&
1867                                         $blob_current ne $blob_parent) {
1868                                 print " | " .
1869                                         $cgi->a({-href => href(action=>"blobdiff",
1870                                                                hash=>$blob_current, hash_parent=>$blob_parent,
1871                                                                hash_base=>$hash_base, hash_parent_base=>$commit,
1872                                                                file_name=>$file_name)},
1873                                                 "diff to current");
1874                         }
1875                 }
1876                 print "</td>\n" .
1877                       "</tr>\n";
1878         }
1879         if (defined $extra) {
1880                 print "<tr>\n" .
1881                       "<td colspan=\"4\">$extra</td>\n" .
1882                       "</tr>\n";
1883         }
1884         print "</table>\n";
1885 }
1886
1887 sub git_tags_body {
1888         # uses global variable $project
1889         my ($taglist, $from, $to, $extra) = @_;
1890         $from = 0 unless defined $from;
1891         $to = $#{$taglist} if (!defined $to || $#{$taglist} < $to);
1892
1893         print "<table class=\"tags\" cellspacing=\"0\">\n";
1894         my $alternate = 0;
1895         for (my $i = $from; $i <= $to; $i++) {
1896                 my $entry = $taglist->[$i];
1897                 my %tag = %$entry;
1898                 my $comment_lines = $tag{'comment'};
1899                 my $comment = shift @$comment_lines;
1900                 my $comment_short;
1901                 if (defined $comment) {
1902                         $comment_short = chop_str($comment, 30, 5);
1903                 }
1904                 if ($alternate) {
1905                         print "<tr class=\"dark\">\n";
1906                 } else {
1907                         print "<tr class=\"light\">\n";
1908                 }
1909                 $alternate ^= 1;
1910                 print "<td><i>$tag{'age'}</i></td>\n" .
1911                       "<td>" .
1912                       $cgi->a({-href => href(action=>$tag{'reftype'}, hash=>$tag{'refid'}),
1913                                -class => "list name"}, esc_html($tag{'name'})) .
1914                       "</td>\n" .
1915                       "<td>";
1916                 if (defined $comment) {
1917                         print format_subject_html($comment, $comment_short,
1918                                                   href(action=>"tag", hash=>$tag{'id'}));
1919                 }
1920                 print "</td>\n" .
1921                       "<td class=\"selflink\">";
1922                 if ($tag{'type'} eq "tag") {
1923                         print $cgi->a({-href => href(action=>"tag", hash=>$tag{'id'})}, "tag");
1924                 } else {
1925                         print "&nbsp;";
1926                 }
1927                 print "</td>\n" .
1928                       "<td class=\"link\">" . " | " .
1929                       $cgi->a({-href => href(action=>$tag{'reftype'}, hash=>$tag{'refid'})}, $tag{'reftype'});
1930                 if ($tag{'reftype'} eq "commit") {
1931                         print " | " . $cgi->a({-href => href(action=>"shortlog", hash=>$tag{'name'})}, "shortlog") .
1932                               " | " . $cgi->a({-href => href(action=>"log", hash=>$tag{'refid'})}, "log");
1933                 } elsif ($tag{'reftype'} eq "blob") {
1934                         print " | " . $cgi->a({-href => href(action=>"blob_plain", hash=>$tag{'refid'})}, "raw");
1935                 }
1936                 print "</td>\n" .
1937                       "</tr>";
1938         }
1939         if (defined $extra) {
1940                 print "<tr>\n" .
1941                       "<td colspan=\"5\">$extra</td>\n" .
1942                       "</tr>\n";
1943         }
1944         print "</table>\n";
1945 }
1946
1947 sub git_heads_body {
1948         # uses global variable $project
1949         my ($taglist, $head, $from, $to, $extra) = @_;
1950         $from = 0 unless defined $from;
1951         $to = $#{$taglist} if (!defined $to || $#{$taglist} < $to);
1952
1953         print "<table class=\"heads\" cellspacing=\"0\">\n";
1954         my $alternate = 0;
1955         for (my $i = $from; $i <= $to; $i++) {
1956                 my $entry = $taglist->[$i];
1957                 my %tag = %$entry;
1958                 my $curr = $tag{'id'} eq $head;
1959                 if ($alternate) {
1960                         print "<tr class=\"dark\">\n";
1961                 } else {
1962                         print "<tr class=\"light\">\n";
1963                 }
1964                 $alternate ^= 1;
1965                 print "<td><i>$tag{'age'}</i></td>\n" .
1966                       ($tag{'id'} eq $head ? "<td class=\"current_head\">" : "<td>") .
1967                       $cgi->a({-href => href(action=>"shortlog", hash=>$tag{'name'}),
1968                                -class => "list name"},esc_html($tag{'name'})) .
1969                       "</td>\n" .
1970                       "<td class=\"link\">" .
1971                       $cgi->a({-href => href(action=>"shortlog", hash=>$tag{'name'})}, "shortlog") . " | " .
1972                       $cgi->a({-href => href(action=>"log", hash=>$tag{'name'})}, "log") .
1973                       "</td>\n" .
1974                       "</tr>";
1975         }
1976         if (defined $extra) {
1977                 print "<tr>\n" .
1978                       "<td colspan=\"3\">$extra</td>\n" .
1979                       "</tr>\n";
1980         }
1981         print "</table>\n";
1982 }
1983
1984 ## ======================================================================
1985 ## ======================================================================
1986 ## actions
1987
1988 sub git_project_list {
1989         my $order = $cgi->param('o');
1990         if (defined $order && $order !~ m/project|descr|owner|age/) {
1991                 die_error(undef, "Unknown order parameter");
1992         }
1993
1994         my @list = git_get_projects_list();
1995         my @projects;
1996         if (!@list) {
1997                 die_error(undef, "No projects found");
1998         }
1999         foreach my $pr (@list) {
2000                 my $head = git_get_head_hash($pr->{'path'});
2001                 if (!defined $head) {
2002                         next;
2003                 }
2004                 $ENV{'GIT_DIR'} = "$projectroot/$pr->{'path'}";
2005                 my %co = parse_commit($head);
2006                 if (!%co) {
2007                         next;
2008                 }
2009                 $pr->{'commit'} = \%co;
2010                 if (!defined $pr->{'descr'}) {
2011                         my $descr = git_get_project_description($pr->{'path'}) || "";
2012                         $pr->{'descr'} = chop_str($descr, 25, 5);
2013                 }
2014                 if (!defined $pr->{'owner'}) {
2015                         $pr->{'owner'} = get_file_owner("$projectroot/$pr->{'path'}") || "";
2016                 }
2017                 push @projects, $pr;
2018         }
2019
2020         git_header_html();
2021         if (-f $home_text) {
2022                 print "<div class=\"index_include\">\n";
2023                 open (my $fd, $home_text);
2024                 print <$fd>;
2025                 close $fd;
2026                 print "</div>\n";
2027         }
2028         print "<table class=\"project_list\">\n" .
2029               "<tr>\n";
2030         $order ||= "project";
2031         if ($order eq "project") {
2032                 @projects = sort {$a->{'path'} cmp $b->{'path'}} @projects;
2033                 print "<th>Project</th>\n";
2034         } else {
2035                 print "<th>" .
2036                       $cgi->a({-href => "$my_uri?" . esc_param("o=project"),
2037                                -class => "header"}, "Project") .
2038                       "</th>\n";
2039         }
2040         if ($order eq "descr") {
2041                 @projects = sort {$a->{'descr'} cmp $b->{'descr'}} @projects;
2042                 print "<th>Description</th>\n";
2043         } else {
2044                 print "<th>" .
2045                       $cgi->a({-href => "$my_uri?" . esc_param("o=descr"),
2046                                -class => "header"}, "Description") .
2047                       "</th>\n";
2048         }
2049         if ($order eq "owner") {
2050                 @projects = sort {$a->{'owner'} cmp $b->{'owner'}} @projects;
2051                 print "<th>Owner</th>\n";
2052         } else {
2053                 print "<th>" .
2054                       $cgi->a({-href => "$my_uri?" . esc_param("o=owner"),
2055                                -class => "header"}, "Owner") .
2056                       "</th>\n";
2057         }
2058         if ($order eq "age") {
2059                 @projects = sort {$a->{'commit'}{'age'} <=> $b->{'commit'}{'age'}} @projects;
2060                 print "<th>Last Change</th>\n";
2061         } else {
2062                 print "<th>" .
2063                       $cgi->a({-href => "$my_uri?" . esc_param("o=age"),
2064                                -class => "header"}, "Last Change") .
2065                       "</th>\n";
2066         }
2067         print "<th></th>\n" .
2068               "</tr>\n";
2069         my $alternate = 0;
2070         foreach my $pr (@projects) {
2071                 if ($alternate) {
2072                         print "<tr class=\"dark\">\n";
2073                 } else {
2074                         print "<tr class=\"light\">\n";
2075                 }
2076                 $alternate ^= 1;
2077                 print "<td>" . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary"),
2078                                         -class => "list"}, esc_html($pr->{'path'})) . "</td>\n" .
2079                       "<td>" . esc_html($pr->{'descr'}) . "</td>\n" .
2080                       "<td><i>" . chop_str($pr->{'owner'}, 15) . "</i></td>\n";
2081                 print "<td class=\"". age_class($pr->{'commit'}{'age'}) . "\">" .
2082                       $pr->{'commit'}{'age_string'} . "</td>\n" .
2083                       "<td class=\"link\">" .
2084                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary")}, "summary")   . " | " .
2085                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"shortlog")}, "shortlog") . " | " .
2086                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"log")}, "log") .
2087                       "</td>\n" .
2088                       "</tr>\n";
2089         }
2090         print "</table>\n";
2091         git_footer_html();
2092 }
2093
2094 sub git_project_index {
2095         my @projects = git_get_projects_list();
2096
2097         print $cgi->header(
2098                 -type => 'text/plain',
2099                 -charset => 'utf-8',
2100                 -content_disposition => qq(inline; filename="index.aux"));
2101
2102         foreach my $pr (@projects) {
2103                 if (!exists $pr->{'owner'}) {
2104                         $pr->{'owner'} = get_file_owner("$projectroot/$project");
2105                 }
2106
2107                 my ($path, $owner) = ($pr->{'path'}, $pr->{'owner'});
2108                 # quote as in CGI::Util::encode, but keep the slash, and use '+' for ' '
2109                 $path  =~ s/([^a-zA-Z0-9_.\-\/ ])/sprintf("%%%02X", ord($1))/eg;
2110                 $owner =~ s/([^a-zA-Z0-9_.\-\/ ])/sprintf("%%%02X", ord($1))/eg;
2111                 $path  =~ s/ /\+/g;
2112                 $owner  =~ s/ /\+/g;
2113
2114                 print "$path $owner\n";
2115         }
2116 }
2117
2118 sub git_summary {
2119         my $descr = git_get_project_description($project) || "none";
2120         my $head = git_get_head_hash($project);
2121         my %co = parse_commit($head);
2122         my %cd = parse_date($co{'committer_epoch'}, $co{'committer_tz'});
2123
2124         my $owner = git_get_project_owner($project);
2125
2126         my $refs = git_get_references();
2127         git_header_html();
2128         git_print_page_nav('summary','', $head);
2129
2130         print "<div class=\"title\">&nbsp;</div>\n";
2131         print "<table cellspacing=\"0\">\n" .
2132               "<tr><td>description</td><td>" . esc_html($descr) . "</td></tr>\n" .
2133               "<tr><td>owner</td><td>$owner</td></tr>\n" .
2134               "<tr><td>last change</td><td>$cd{'rfc2822'}</td></tr>\n";
2135         # use per project git URL list in $projectroot/$project/cloneurl
2136         # or make project git URL from git base URL and project name
2137         my $url_tag = "URL";
2138         my @url_list = git_get_project_url_list($project);
2139         @url_list = map { "$_/$project" } @git_base_url_list unless @url_list;
2140         foreach my $git_url (@url_list) {
2141                 next unless $git_url;
2142                 print "<tr><td>$url_tag</td><td>$git_url</td></tr>\n";
2143                 $url_tag = "";
2144         }
2145         print "</table>\n";
2146
2147         open my $fd, "-|", $GIT, "rev-list", "--max-count=17", git_get_head_hash($project)
2148                 or die_error(undef, "Open git-rev-list failed");
2149         my @revlist = map { chomp; $_ } <$fd>;
2150         close $fd;
2151         git_print_header_div('shortlog');
2152         git_shortlog_body(\@revlist, 0, 15, $refs,
2153                           $cgi->a({-href => href(action=>"shortlog")}, "..."));
2154
2155         my $taglist = git_get_refs_list("refs/tags");
2156         if (defined @$taglist) {
2157                 git_print_header_div('tags');
2158                 git_tags_body($taglist, 0, 15,
2159                               $cgi->a({-href => href(action=>"tags")}, "..."));
2160         }
2161
2162         my $headlist = git_get_refs_list("refs/heads");
2163         if (defined @$headlist) {
2164                 git_print_header_div('heads');
2165                 git_heads_body($headlist, $head, 0, 15,
2166                                $cgi->a({-href => href(action=>"heads")}, "..."));
2167         }
2168
2169         git_footer_html();
2170 }
2171
2172 sub git_tag {
2173         my $head = git_get_head_hash($project);
2174         git_header_html();
2175         git_print_page_nav('','', $head,undef,$head);
2176         my %tag = parse_tag($hash);
2177         git_print_header_div('commit', esc_html($tag{'name'}), $hash);
2178         print "<div class=\"title_text\">\n" .
2179               "<table cellspacing=\"0\">\n" .
2180               "<tr>\n" .
2181               "<td>object</td>\n" .
2182               "<td>" . $cgi->a({-class => "list", -href => href(action=>$tag{'type'}, hash=>$tag{'object'})},
2183                                $tag{'object'}) . "</td>\n" .
2184               "<td class=\"link\">" . $cgi->a({-href => href(action=>$tag{'type'}, hash=>$tag{'object'})},
2185                                               $tag{'type'}) . "</td>\n" .
2186               "</tr>\n";
2187         if (defined($tag{'author'})) {
2188                 my %ad = parse_date($tag{'epoch'}, $tag{'tz'});
2189                 print "<tr><td>author</td><td>" . esc_html($tag{'author'}) . "</td></tr>\n";
2190                 print "<tr><td></td><td>" . $ad{'rfc2822'} .
2191                         sprintf(" (%02d:%02d %s)", $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'}) .
2192                         "</td></tr>\n";
2193         }
2194         print "</table>\n\n" .
2195               "</div>\n";
2196         print "<div class=\"page_body\">";
2197         my $comment = $tag{'comment'};
2198         foreach my $line (@$comment) {
2199                 print esc_html($line) . "<br/>\n";
2200         }
2201         print "</div>\n";
2202         git_footer_html();
2203 }
2204
2205 sub git_blame2 {
2206         my $fd;
2207         my $ftype;
2208
2209         if (!gitweb_check_feature('blame')) {
2210                 die_error('403 Permission denied', "Permission denied");
2211         }
2212         die_error('404 Not Found', "File name not defined") if (!$file_name);
2213         $hash_base ||= git_get_head_hash($project);
2214         die_error(undef, "Couldn't find base commit") unless ($hash_base);
2215         my %co = parse_commit($hash_base)
2216                 or die_error(undef, "Reading commit failed");
2217         if (!defined $hash) {
2218                 $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
2219                         or die_error(undef, "Error looking up file");
2220         }
2221         $ftype = git_get_type($hash);
2222         if ($ftype !~ "blob") {
2223                 die_error("400 Bad Request", "Object is not a blob");
2224         }
2225         open ($fd, "-|", $GIT, "blame", '-l', $file_name, $hash_base)
2226                 or die_error(undef, "Open git-blame failed");
2227         git_header_html();
2228         my $formats_nav =
2229                 $cgi->a({-href => href(action=>"blob", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
2230                         "blob") .
2231                 " | " .
2232                 $cgi->a({-href => href(action=>"blame", file_name=>$file_name)},
2233                         "head");
2234         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
2235         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
2236         git_print_page_path($file_name, $ftype, $hash_base);
2237         my @rev_color = (qw(light2 dark2));
2238         my $num_colors = scalar(@rev_color);
2239         my $current_color = 0;
2240         my $last_rev;
2241         print <<HTML;
2242 <div class="page_body">
2243 <table class="blame">
2244 <tr><th>Commit</th><th>Line</th><th>Data</th></tr>
2245 HTML
2246         while (<$fd>) {
2247                 /^([0-9a-fA-F]{40}).*?(\d+)\)\s{1}(\s*.*)/;
2248                 my $full_rev = $1;
2249                 my $rev = substr($full_rev, 0, 8);
2250                 my $lineno = $2;
2251                 my $data = $3;
2252
2253                 if (!defined $last_rev) {
2254                         $last_rev = $full_rev;
2255                 } elsif ($last_rev ne $full_rev) {
2256                         $last_rev = $full_rev;
2257                         $current_color = ++$current_color % $num_colors;
2258                 }
2259                 print "<tr class=\"$rev_color[$current_color]\">\n";
2260                 print "<td class=\"sha1\">" .
2261                         $cgi->a({-href => href(action=>"commit", hash=>$full_rev, file_name=>$file_name)},
2262                                 esc_html($rev)) . "</td>\n";
2263                 print "<td class=\"linenr\"><a id=\"l$lineno\" href=\"#l$lineno\" class=\"linenr\">" .
2264                       esc_html($lineno) . "</a></td>\n";
2265                 print "<td class=\"pre\">" . esc_html($data) . "</td>\n";
2266                 print "</tr>\n";
2267         }
2268         print "</table>\n";
2269         print "</div>";
2270         close $fd
2271                 or print "Reading blob failed\n";
2272         git_footer_html();
2273 }
2274
2275 sub git_blame {
2276         my $fd;
2277
2278         if (!gitweb_check_feature('blame')) {
2279                 die_error('403 Permission denied', "Permission denied");
2280         }
2281         die_error('404 Not Found', "File name not defined") if (!$file_name);
2282         $hash_base ||= git_get_head_hash($project);
2283         die_error(undef, "Couldn't find base commit") unless ($hash_base);
2284         my %co = parse_commit($hash_base)
2285                 or die_error(undef, "Reading commit failed");
2286         if (!defined $hash) {
2287                 $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
2288                         or die_error(undef, "Error lookup file");
2289         }
2290         open ($fd, "-|", $GIT, "annotate", '-l', '-t', '-r', $file_name, $hash_base)
2291                 or die_error(undef, "Open git-annotate failed");
2292         git_header_html();
2293         my $formats_nav =
2294                 $cgi->a({-href => href(action=>"blob", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
2295                         "blob") .
2296                 " | " .
2297                 $cgi->a({-href => href(action=>"blame", file_name=>$file_name)},
2298                         "head");
2299         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
2300         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
2301         git_print_page_path($file_name, 'blob', $hash_base);
2302         print "<div class=\"page_body\">\n";
2303         print <<HTML;
2304 <table class="blame">
2305   <tr>
2306     <th>Commit</th>
2307     <th>Age</th>
2308     <th>Author</th>
2309     <th>Line</th>
2310     <th>Data</th>
2311   </tr>
2312 HTML
2313         my @line_class = (qw(light dark));
2314         my $line_class_len = scalar (@line_class);
2315         my $line_class_num = $#line_class;
2316         while (my $line = <$fd>) {
2317                 my $long_rev;
2318                 my $short_rev;
2319                 my $author;
2320                 my $time;
2321                 my $lineno;
2322                 my $data;
2323                 my $age;
2324                 my $age_str;
2325                 my $age_class;
2326
2327                 chomp $line;
2328                 $line_class_num = ($line_class_num + 1) % $line_class_len;
2329
2330                 if ($line =~ m/^([0-9a-fA-F]{40})\t\(\s*([^\t]+)\t(\d+) [+-]\d\d\d\d\t(\d+)\)(.*)$/) {
2331                         $long_rev = $1;
2332                         $author   = $2;
2333                         $time     = $3;
2334                         $lineno   = $4;
2335                         $data     = $5;
2336                 } else {
2337                         print qq(  <tr><td colspan="5" class="error">Unable to parse: $line</td></tr>\n);
2338                         next;
2339                 }
2340                 $short_rev  = substr ($long_rev, 0, 8);
2341                 $age        = time () - $time;
2342                 $age_str    = age_string ($age);
2343                 $age_str    =~ s/ /&nbsp;/g;
2344                 $age_class  = age_class($age);
2345                 $author     = esc_html ($author);
2346                 $author     =~ s/ /&nbsp;/g;
2347
2348                 $data = untabify($data);
2349                 $data = esc_html ($data);
2350
2351                 print <<HTML;
2352   <tr class="$line_class[$line_class_num]">
2353     <td class="sha1"><a href="${\href (action=>"commit", hash=>$long_rev)}" class="text">$short_rev..</a></td>
2354     <td class="$age_class">$age_str</td>
2355     <td>$author</td>
2356     <td class="linenr"><a id="$lineno" href="#$lineno" class="linenr">$lineno</a></td>
2357     <td class="pre">$data</td>
2358   </tr>
2359 HTML
2360         } # while (my $line = <$fd>)
2361         print "</table>\n\n";
2362         close $fd
2363                 or print "Reading blob failed.\n";
2364         print "</div>";
2365         git_footer_html();
2366 }
2367
2368 sub git_tags {
2369         my $head = git_get_head_hash($project);
2370         git_header_html();
2371         git_print_page_nav('','', $head,undef,$head);
2372         git_print_header_div('summary', $project);
2373
2374         my $taglist = git_get_refs_list("refs/tags");
2375         if (defined @$taglist) {
2376                 git_tags_body($taglist);
2377         }
2378         git_footer_html();
2379 }
2380
2381 sub git_heads {
2382         my $head = git_get_head_hash($project);
2383         git_header_html();
2384         git_print_page_nav('','', $head,undef,$head);
2385         git_print_header_div('summary', $project);
2386
2387         my $taglist = git_get_refs_list("refs/heads");
2388         if (defined @$taglist) {
2389                 git_heads_body($taglist, $head);
2390         }
2391         git_footer_html();
2392 }
2393
2394 sub git_blob_plain {
2395         # blobs defined by non-textual hash id's can be cached
2396         my $expires;
2397         if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
2398                 $expires = "+1d";
2399         }
2400
2401         if (!defined $hash) {
2402                 if (defined $file_name) {
2403                         my $base = $hash_base || git_get_head_hash($project);
2404                         $hash = git_get_hash_by_path($base, $file_name, "blob")
2405                                 or die_error(undef, "Error lookup file");
2406                 } else {
2407                         die_error(undef, "No file name defined");
2408                 }
2409         }
2410         my $type = shift;
2411         open my $fd, "-|", $GIT, "cat-file", "blob", $hash
2412                 or die_error(undef, "Couldn't cat $file_name, $hash");
2413
2414         $type ||= blob_mimetype($fd, $file_name);
2415
2416         # save as filename, even when no $file_name is given
2417         my $save_as = "$hash";
2418         if (defined $file_name) {
2419                 $save_as = $file_name;
2420         } elsif ($type =~ m/^text\//) {
2421                 $save_as .= '.txt';
2422         }
2423
2424         print $cgi->header(
2425                 -type => "$type",
2426                 -expires=>$expires,
2427                 -content_disposition => "inline; filename=\"$save_as\"");
2428         undef $/;
2429         binmode STDOUT, ':raw';
2430         print <$fd>;
2431         binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
2432         $/ = "\n";
2433         close $fd;
2434 }
2435
2436 sub git_blob {
2437         # blobs defined by non-textual hash id's can be cached
2438         my $expires;
2439         if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
2440                 $expires = "+1d";
2441         }
2442
2443         if (!defined $hash) {
2444                 if (defined $file_name) {
2445                         my $base = $hash_base || git_get_head_hash($project);
2446                         $hash = git_get_hash_by_path($base, $file_name, "blob")
2447                                 or die_error(undef, "Error lookup file");
2448                 } else {
2449                         die_error(undef, "No file name defined");
2450                 }
2451         }
2452         my $have_blame = gitweb_check_feature('blame');
2453         open my $fd, "-|", $GIT, "cat-file", "blob", $hash
2454                 or die_error(undef, "Couldn't cat $file_name, $hash");
2455         my $mimetype = blob_mimetype($fd, $file_name);
2456         if ($mimetype !~ m/^text\//) {
2457                 close $fd;
2458                 return git_blob_plain($mimetype);
2459         }
2460         git_header_html(undef, $expires);
2461         my $formats_nav = '';
2462         if (defined $hash_base && (my %co = parse_commit($hash_base))) {
2463                 if (defined $file_name) {
2464                         if ($have_blame) {
2465                                 $formats_nav .=
2466                                         $cgi->a({-href => href(action=>"blame", hash_base=>$hash_base,
2467                                                                hash=>$hash, file_name=>$file_name)},
2468                                                 "blame") .
2469                                         " | ";
2470                         }
2471                         $formats_nav .=
2472                                 $cgi->a({-href => href(action=>"blob_plain",
2473                                                        hash=>$hash, file_name=>$file_name)},
2474                                         "plain") .
2475                                 " | " .
2476                                 $cgi->a({-href => href(action=>"blob",
2477                                                        hash_base=>"HEAD", file_name=>$file_name)},
2478                                         "head");
2479                 } else {
2480                         $formats_nav .=
2481                                 $cgi->a({-href => href(action=>"blob_plain", hash=>$hash)}, "plain");
2482                 }
2483                 git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
2484                 git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
2485         } else {
2486                 print "<div class=\"page_nav\">\n" .
2487                       "<br/><br/></div>\n" .
2488                       "<div class=\"title\">$hash</div>\n";
2489         }
2490         git_print_page_path($file_name, "blob", $hash_base);
2491         print "<div class=\"page_body\">\n";
2492         my $nr;
2493         while (my $line = <$fd>) {
2494                 chomp $line;
2495                 $nr++;
2496                 $line = untabify($line);
2497                 printf "<div class=\"pre\"><a id=\"l%i\" href=\"#l%i\" class=\"linenr\">%4i</a> %s</div>\n",
2498                        $nr, $nr, $nr, esc_html($line);
2499         }
2500         close $fd
2501                 or print "Reading blob failed.\n";
2502         print "</div>";
2503         git_footer_html();
2504 }
2505
2506 sub git_tree {
2507         if (!defined $hash) {
2508                 $hash = git_get_head_hash($project);
2509                 if (defined $file_name) {
2510                         my $base = $hash_base || $hash;
2511                         $hash = git_get_hash_by_path($base, $file_name, "tree");
2512                 }
2513                 if (!defined $hash_base) {
2514                         $hash_base = $hash;
2515                 }
2516         }
2517         $/ = "\0";
2518         open my $fd, "-|", $GIT, "ls-tree", '-z', $hash
2519                 or die_error(undef, "Open git-ls-tree failed");
2520         my @entries = map { chomp; $_ } <$fd>;
2521         close $fd or die_error(undef, "Reading tree failed");
2522         $/ = "\n";
2523
2524         my $refs = git_get_references();
2525         my $ref = format_ref_marker($refs, $hash_base);
2526         git_header_html();
2527         my %base_key = ();
2528         my $base = "";
2529         my $have_blame = gitweb_check_feature('blame');
2530         if (defined $hash_base && (my %co = parse_commit($hash_base))) {
2531                 $base_key{hash_base} = $hash_base;
2532                 git_print_page_nav('tree','', $hash_base);
2533                 git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash_base);
2534         } else {
2535                 print "<div class=\"page_nav\">\n";
2536                 print "<br/><br/></div>\n";
2537                 print "<div class=\"title\">$hash</div>\n";
2538         }
2539         if (defined $file_name) {
2540                 $base = esc_html("$file_name/");
2541         }
2542         git_print_page_path($file_name, 'tree', $hash_base);
2543         print "<div class=\"page_body\">\n";
2544         print "<table cellspacing=\"0\">\n";
2545         my $alternate = 0;
2546         foreach my $line (@entries) {
2547                 #'100644        blob    0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa        panic.c'
2548                 $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t(.+)$/;
2549                 my $t_mode = $1;
2550                 my $t_type = $2;
2551                 my $t_hash = $3;
2552                 my $t_name = validate_input($4);
2553                 if ($alternate) {
2554                         print "<tr class=\"dark\">\n";
2555                 } else {
2556                         print "<tr class=\"light\">\n";
2557                 }
2558                 $alternate ^= 1;
2559                 print "<td class=\"mode\">" . mode_str($t_mode) . "</td>\n";
2560                 if ($t_type eq "blob") {
2561                         print "<td class=\"list\">" .
2562                               $cgi->a({-href => href(action=>"blob", hash=>$t_hash, file_name=>"$base$t_name", %base_key),
2563                                       -class => "list"}, esc_html($t_name)) .
2564                               "</td>\n" .
2565                               "<td class=\"link\">" .
2566                               $cgi->a({-href => href(action=>"blob", hash=>$t_hash, file_name=>"$base$t_name", %base_key)},
2567                                       "blob");
2568                         if ($have_blame) {
2569                                 print " | " .
2570                                         $cgi->a({-href => href(action=>"blame", hash=>$t_hash, file_name=>"$base$t_name", %base_key)},
2571                                                 "blame");
2572                         }
2573                         print " | " .
2574                               $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
2575                                                      hash=>$t_hash, file_name=>"$base$t_name")},
2576                                       "history") .
2577                               " | " .
2578                               $cgi->a({-href => href(action=>"blob_plain",
2579                                                      hash=>$t_hash, file_name=>"$base$t_name")},
2580                                       "raw") .
2581                               "</td>\n";
2582                 } elsif ($t_type eq "tree") {
2583                         print "<td class=\"list\">" .
2584                               $cgi->a({-href => href(action=>"tree", hash=>$t_hash, file_name=>"$base$t_name", %base_key)},
2585                                       esc_html($t_name)) .
2586                               "</td>\n" .
2587                               "<td class=\"link\">" .
2588                               $cgi->a({-href => href(action=>"tree", hash=>$t_hash, file_name=>"$base$t_name", %base_key)},
2589                                       "tree") .
2590                               " | " .
2591                               $cgi->a({-href => href(action=>"history", hash_base=>$hash_base, file_name=>"$base$t_name")},
2592                                       "history") .
2593                               "</td>\n";
2594                 }
2595                 print "</tr>\n";
2596         }
2597         print "</table>\n" .
2598               "</div>";
2599         git_footer_html();
2600 }
2601
2602 sub git_snapshot {
2603
2604         my ($ctype, $suffix, $command) = gitweb_check_feature('snapshot');
2605         my $have_snapshot = (defined $ctype && defined $suffix);
2606         if (!$have_snapshot) {
2607                 die_error('403 Permission denied', "Permission denied");
2608         }
2609
2610         if (!defined $hash) {
2611                 $hash = git_get_head_hash($project);
2612         }
2613
2614         my $filename = basename($project) . "-$hash.tar.$suffix";
2615
2616         print $cgi->header(-type => 'application/x-tar',
2617                            -content_encoding => $ctype,
2618                            -content_disposition => "inline; filename=\"$filename\"",
2619                            -status => '200 OK');
2620
2621         open my $fd, "-|", "$GIT tar-tree $hash \'$project\' | $command" or
2622                 die_error(undef, "Execute git-tar-tree failed.");
2623         binmode STDOUT, ':raw';
2624         print <$fd>;
2625         binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
2626         close $fd;
2627
2628 }
2629
2630 sub git_log {
2631         my $head = git_get_head_hash($project);
2632         if (!defined $hash) {
2633                 $hash = $head;
2634         }
2635         if (!defined $page) {
2636                 $page = 0;
2637         }
2638         my $refs = git_get_references();
2639
2640         my $limit = sprintf("--max-count=%i", (100 * ($page+1)));
2641         open my $fd, "-|", $GIT, "rev-list", $limit, $hash
2642                 or die_error(undef, "Open git-rev-list failed");
2643         my @revlist = map { chomp; $_ } <$fd>;
2644         close $fd;
2645
2646         my $paging_nav = format_paging_nav('log', $hash, $head, $page, $#revlist);
2647
2648         git_header_html();
2649         git_print_page_nav('log','', $hash,undef,undef, $paging_nav);
2650
2651         if (!@revlist) {
2652                 my %co = parse_commit($hash);
2653
2654                 git_print_header_div('summary', $project);
2655                 print "<div class=\"page_body\"> Last change $co{'age_string'}.<br/><br/></div>\n";
2656         }
2657         for (my $i = ($page * 100); $i <= $#revlist; $i++) {
2658                 my $commit = $revlist[$i];
2659                 my $ref = format_ref_marker($refs, $commit);
2660                 my %co = parse_commit($commit);
2661                 next if !%co;
2662                 my %ad = parse_date($co{'author_epoch'});
2663                 git_print_header_div('commit',
2664                                "<span class=\"age\">$co{'age_string'}</span>" .
2665                                esc_html($co{'title'}) . $ref,
2666                                $commit);
2667                 print "<div class=\"title_text\">\n" .
2668                       "<div class=\"log_link\">\n" .
2669                       $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") .
2670                       " | " .
2671                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") .
2672                       "<br/>\n" .
2673                       "</div>\n" .
2674                       "<i>" . esc_html($co{'author_name'}) .  " [$ad{'rfc2822'}]</i><br/>\n" .
2675                       "</div>\n";
2676
2677                 print "<div class=\"log_body\">\n";
2678                 git_print_simplified_log($co{'comment'});
2679                 print "</div>\n";
2680         }
2681         git_footer_html();
2682 }
2683
2684 sub git_commit {
2685         my %co = parse_commit($hash);
2686         if (!%co) {
2687                 die_error(undef, "Unknown commit object");
2688         }
2689         my %ad = parse_date($co{'author_epoch'}, $co{'author_tz'});
2690         my %cd = parse_date($co{'committer_epoch'}, $co{'committer_tz'});
2691
2692         my $parent = $co{'parent'};
2693         if (!defined $parent) {
2694                 $parent = "--root";
2695         }
2696         open my $fd, "-|", $GIT, "diff-tree", '-r', @diff_opts, $parent, $hash
2697                 or die_error(undef, "Open git-diff-tree failed");
2698         my @difftree = map { chomp; $_ } <$fd>;
2699         close $fd or die_error(undef, "Reading git-diff-tree failed");
2700
2701         # non-textual hash id's can be cached
2702         my $expires;
2703         if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
2704                 $expires = "+1d";
2705         }
2706         my $refs = git_get_references();
2707         my $ref = format_ref_marker($refs, $co{'id'});
2708
2709         my ($ctype, $suffix, $command) = gitweb_check_feature('snapshot');
2710         my $have_snapshot = (defined $ctype && defined $suffix);
2711
2712         my $formats_nav = '';
2713         if (defined $file_name && defined $co{'parent'}) {
2714                 my $parent = $co{'parent'};
2715                 $formats_nav .=
2716                         $cgi->a({-href => href(action=>"blame", hash_parent=>$parent, file_name=>$file_name)},
2717                                 "blame");
2718         }
2719         git_header_html(undef, $expires);
2720         git_print_page_nav('commit', defined $co{'parent'} ? '' : 'commitdiff',
2721                            $hash, $co{'tree'}, $hash,
2722                            $formats_nav);
2723
2724         if (defined $co{'parent'}) {
2725                 git_print_header_div('commitdiff', esc_html($co{'title'}) . $ref, $hash);
2726         } else {
2727                 git_print_header_div('tree', esc_html($co{'title'}) . $ref, $co{'tree'}, $hash);
2728         }
2729         print "<div class=\"title_text\">\n" .
2730               "<table cellspacing=\"0\">\n";
2731         print "<tr><td>author</td><td>" . esc_html($co{'author'}) . "</td></tr>\n".
2732               "<tr>" .
2733               "<td></td><td> $ad{'rfc2822'}";
2734         if ($ad{'hour_local'} < 6) {
2735                 printf(" (<span class=\"atnight\">%02d:%02d</span> %s)",
2736                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
2737         } else {
2738                 printf(" (%02d:%02d %s)",
2739                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
2740         }
2741         print "</td>" .
2742               "</tr>\n";
2743         print "<tr><td>committer</td><td>" . esc_html($co{'committer'}) . "</td></tr>\n";
2744         print "<tr><td></td><td> $cd{'rfc2822'}" .
2745               sprintf(" (%02d:%02d %s)", $cd{'hour_local'}, $cd{'minute_local'}, $cd{'tz_local'}) .
2746               "</td></tr>\n";
2747         print "<tr><td>commit</td><td class=\"sha1\">$co{'id'}</td></tr>\n";
2748         print "<tr>" .
2749               "<td>tree</td>" .
2750               "<td class=\"sha1\">" .
2751               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash),
2752                        class => "list"}, $co{'tree'}) .
2753               "</td>" .
2754               "<td class=\"link\">" .
2755               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash)},
2756                       "tree");
2757         if ($have_snapshot) {
2758                 print " | " .
2759                       $cgi->a({-href => href(action=>"snapshot", hash=>$hash)}, "snapshot");
2760         }
2761         print "</td>" .
2762               "</tr>\n";
2763         my $parents = $co{'parents'};
2764         foreach my $par (@$parents) {
2765                 print "<tr>" .
2766                       "<td>parent</td>" .
2767                       "<td class=\"sha1\">" .
2768                       $cgi->a({-href => href(action=>"commit", hash=>$par),
2769                                class => "list"}, $par) .
2770                       "</td>" .
2771                       "<td class=\"link\">" .
2772                       $cgi->a({-href => href(action=>"commit", hash=>$par)}, "commit") .
2773                       " | " .
2774                       $cgi->a({-href => href(action=>"commitdiff", hash=>$hash, hash_parent=>$par)}, "diff") .
2775                       "</td>" .
2776                       "</tr>\n";
2777         }
2778         print "</table>".
2779               "</div>\n";
2780
2781         print "<div class=\"page_body\">\n";
2782         git_print_log($co{'comment'});
2783         print "</div>\n";
2784
2785         git_difftree_body(\@difftree, $hash, $parent);
2786
2787         git_footer_html();
2788 }
2789
2790 sub git_blobdiff {
2791         my $format = shift || 'html';
2792
2793         my $fd;
2794         my @difftree;
2795         my %diffinfo;
2796         my $expires;
2797
2798         # preparing $fd and %diffinfo for git_patchset_body
2799         # new style URI
2800         if (defined $hash_base && defined $hash_parent_base) {
2801                 if (defined $file_name) {
2802                         # read raw output
2803                         open $fd, "-|", $GIT, "diff-tree", '-r', @diff_opts, $hash_parent_base, $hash_base,
2804                                 "--", $file_name
2805                                 or die_error(undef, "Open git-diff-tree failed");
2806                         @difftree = map { chomp; $_ } <$fd>;
2807                         close $fd
2808                                 or die_error(undef, "Reading git-diff-tree failed");
2809                         @difftree
2810                                 or die_error('404 Not Found', "Blob diff not found");
2811
2812                 } elsif (defined $hash &&
2813                          $hash =~ /[0-9a-fA-F]{40}/) {
2814                         # try to find filename from $hash
2815
2816                         # read filtered raw output
2817                         open $fd, "-|", $GIT, "diff-tree", '-r', @diff_opts, $hash_parent_base, $hash_base
2818                                 or die_error(undef, "Open git-diff-tree failed");
2819                         @difftree =
2820                                 # ':100644 100644 03b21826... 3b93d5e7... M     ls-files.c'
2821                                 # $hash == to_id
2822                                 grep { /^:[0-7]{6} [0-7]{6} [0-9a-fA-F]{40} $hash/ }
2823                                 map { chomp; $_ } <$fd>;
2824                         close $fd
2825                                 or die_error(undef, "Reading git-diff-tree failed");
2826                         @difftree
2827                                 or die_error('404 Not Found', "Blob diff not found");
2828
2829                 } else {
2830                         die_error('404 Not Found', "Missing one of the blob diff parameters");
2831                 }
2832
2833                 if (@difftree > 1) {
2834                         die_error('404 Not Found', "Ambiguous blob diff specification");
2835                 }
2836
2837                 %diffinfo = parse_difftree_raw_line($difftree[0]);
2838                 $file_parent ||= $diffinfo{'from_file'} || $file_name || $diffinfo{'file'};
2839                 $file_name   ||= $diffinfo{'to_file'}   || $diffinfo{'file'};
2840
2841                 $hash_parent ||= $diffinfo{'from_id'};
2842                 $hash        ||= $diffinfo{'to_id'};
2843
2844                 # non-textual hash id's can be cached
2845                 if ($hash_base =~ m/^[0-9a-fA-F]{40}$/ &&
2846                     $hash_parent_base =~ m/^[0-9a-fA-F]{40}$/) {
2847                         $expires = '+1d';
2848                 }
2849
2850                 # open patch output
2851                 open $fd, "-|", $GIT, "diff-tree", '-r', @diff_opts,
2852                         '-p', $hash_parent_base, $hash_base,
2853                         "--", $file_name
2854                         or die_error(undef, "Open git-diff-tree failed");
2855         }
2856
2857         # old/legacy style URI
2858         if (!%diffinfo && # if new style URI failed
2859             defined $hash && defined $hash_parent) {
2860                 # fake git-diff-tree raw output
2861                 $diffinfo{'from_mode'} = $diffinfo{'to_mode'} = "blob";
2862                 $diffinfo{'from_id'} = $hash_parent;
2863                 $diffinfo{'to_id'}   = $hash;
2864                 if (defined $file_name) {
2865                         if (defined $file_parent) {
2866                                 $diffinfo{'status'} = '2';
2867                                 $diffinfo{'from_file'} = $file_parent;
2868                                 $diffinfo{'to_file'}   = $file_name;
2869                         } else { # assume not renamed
2870                                 $diffinfo{'status'} = '1';
2871                                 $diffinfo{'from_file'} = $file_name;
2872                                 $diffinfo{'to_file'}   = $file_name;
2873                         }
2874                 } else { # no filename given
2875                         $diffinfo{'status'} = '2';
2876                         $diffinfo{'from_file'} = $hash_parent;
2877                         $diffinfo{'to_file'}   = $hash;
2878                 }
2879
2880                 # non-textual hash id's can be cached
2881                 if ($hash =~ m/^[0-9a-fA-F]{40}$/ &&
2882                     $hash_parent =~ m/^[0-9a-fA-F]{40}$/) {
2883                         $expires = '+1d';
2884                 }
2885
2886                 # open patch output
2887                 open $fd, "-|", $GIT, "diff", '-p', @diff_opts, $hash_parent, $hash
2888                         or die_error(undef, "Open git-diff failed");
2889         } else  {
2890                 die_error('404 Not Found', "Missing one of the blob diff parameters")
2891                         unless %diffinfo;
2892         }
2893
2894         # header
2895         if ($format eq 'html') {
2896                 my $formats_nav =
2897                         $cgi->a({-href => href(action=>"blobdiff_plain",
2898                                                hash=>$hash, hash_parent=>$hash_parent,
2899                                                hash_base=>$hash_base, hash_parent_base=>$hash_parent_base,
2900                                                file_name=>$file_name, file_parent=>$file_parent)},
2901                                 "plain");
2902                 git_header_html(undef, $expires);
2903                 if (defined $hash_base && (my %co = parse_commit($hash_base))) {
2904                         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
2905                         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
2906                 } else {
2907                         print "<div class=\"page_nav\"><br/>$formats_nav<br/></div>\n";
2908                         print "<div class=\"title\">$hash vs $hash_parent</div>\n";
2909                 }
2910                 if (defined $file_name) {
2911                         git_print_page_path($file_name, "blob", $hash_base);
2912                 } else {
2913                         print "<div class=\"page_path\"></div>\n";
2914                 }
2915
2916         } elsif ($format eq 'plain') {
2917                 print $cgi->header(
2918                         -type => 'text/plain',
2919                         -charset => 'utf-8',
2920                         -expires => $expires,
2921                         -content_disposition => qq(inline; filename="${file_name}.patch"));
2922
2923                 print "X-Git-Url: " . $cgi->self_url() . "\n\n";
2924
2925         } else {
2926                 die_error(undef, "Unknown blobdiff format");
2927         }
2928
2929         # patch
2930         if ($format eq 'html') {
2931                 print "<div class=\"page_body\">\n";
2932
2933                 git_patchset_body($fd, [ \%diffinfo ], $hash_base, $hash_parent_base);
2934                 close $fd;
2935
2936                 print "</div>\n"; # class="page_body"
2937                 git_footer_html();
2938
2939         } else {
2940                 while (my $line = <$fd>) {
2941                         $line =~ s!a/($hash|$hash_parent)!a/$diffinfo{'from_file'}!g;
2942                         $line =~ s!b/($hash|$hash_parent)!b/$diffinfo{'to_file'}!g;
2943
2944                         print $line;
2945
2946                         last if $line =~ m!^\+\+\+!;
2947                 }
2948                 local $/ = undef;
2949                 print <$fd>;
2950                 close $fd;
2951         }
2952 }
2953
2954 sub git_blobdiff_plain {
2955         git_blobdiff('plain');
2956 }
2957
2958 sub git_commitdiff {
2959         my $format = shift || 'html';
2960         my %co = parse_commit($hash);
2961         if (!%co) {
2962                 die_error(undef, "Unknown commit object");
2963         }
2964         if (!defined $hash_parent) {
2965                 $hash_parent = $co{'parent'} || '--root';
2966         }
2967
2968         # read commitdiff
2969         my $fd;
2970         my @difftree;
2971         if ($format eq 'html') {
2972                 open $fd, "-|", $GIT, "diff-tree", '-r', @diff_opts,
2973                         "--patch-with-raw", "--full-index", $hash_parent, $hash
2974                         or die_error(undef, "Open git-diff-tree failed");
2975
2976                 while (chomp(my $line = <$fd>)) {
2977                         # empty line ends raw part of diff-tree output
2978                         last unless $line;
2979                         push @difftree, $line;
2980                 }
2981
2982         } elsif ($format eq 'plain') {
2983                 open $fd, "-|", $GIT, "diff-tree", '-r', @diff_opts,
2984                         '-p', $hash_parent, $hash
2985                         or die_error(undef, "Open git-diff-tree failed");
2986
2987         } else {
2988                 die_error(undef, "Unknown commitdiff format");
2989         }
2990
2991         # non-textual hash id's can be cached
2992         my $expires;
2993         if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
2994                 $expires = "+1d";
2995         }
2996
2997         # write commit message
2998         if ($format eq 'html') {
2999                 my $refs = git_get_references();
3000                 my $ref = format_ref_marker($refs, $co{'id'});
3001                 my $formats_nav =
3002                         $cgi->a({-href => href(action=>"commitdiff_plain",
3003                                                hash=>$hash, hash_parent=>$hash_parent)},
3004                                 "plain");
3005
3006                 git_header_html(undef, $expires);
3007                 git_print_page_nav('commitdiff','', $hash,$co{'tree'},$hash, $formats_nav);
3008                 git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash);
3009                 git_print_authorship(\%co);
3010                 print "<div class=\"page_body\">\n";
3011                 print "<div class=\"log\">\n";
3012                 git_print_simplified_log($co{'comment'}, 1); # skip title
3013                 print "</div>\n"; # class="log"
3014
3015         } elsif ($format eq 'plain') {
3016                 my $refs = git_get_references("tags");
3017                 my $tagname = git_get_rev_name_tags($hash);
3018                 my $filename = basename($project) . "-$hash.patch";
3019
3020                 print $cgi->header(
3021                         -type => 'text/plain',
3022                         -charset => 'utf-8',
3023                         -expires => $expires,
3024                         -content_disposition => qq(inline; filename="$filename"));
3025                 my %ad = parse_date($co{'author_epoch'}, $co{'author_tz'});
3026                 print <<TEXT;
3027 From: $co{'author'}
3028 Date: $ad{'rfc2822'} ($ad{'tz_local'})
3029 Subject: $co{'title'}
3030 TEXT
3031                 print "X-Git-Tag: $tagname\n" if $tagname;
3032                 print "X-Git-Url: " . $cgi->self_url() . "\n\n";
3033
3034                 foreach my $line (@{$co{'comment'}}) {
3035                         print "$line\n";
3036                 }
3037                 print "---\n\n";
3038         }
3039
3040         # write patch
3041         if ($format eq 'html') {
3042                 git_difftree_body(\@difftree, $hash, $hash_parent);
3043                 print "<br/>\n";
3044
3045                 git_patchset_body($fd, \@difftree, $hash, $hash_parent);
3046                 close $fd;
3047                 print "</div>\n"; # class="page_body"
3048                 git_footer_html();
3049
3050         } elsif ($format eq 'plain') {
3051                 local $/ = undef;
3052                 print <$fd>;
3053                 close $fd
3054                         or print "Reading git-diff-tree failed\n";
3055         }
3056 }
3057
3058 sub git_commitdiff_plain {
3059         git_commitdiff('plain');
3060 }
3061
3062 sub git_history {
3063         if (!defined $hash_base) {
3064                 $hash_base = git_get_head_hash($project);
3065         }
3066         my $ftype;
3067         my %co = parse_commit($hash_base);
3068         if (!%co) {
3069                 die_error(undef, "Unknown commit object");
3070         }
3071         my $refs = git_get_references();
3072         git_header_html();
3073         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base);
3074         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
3075         if (!defined $hash && defined $file_name) {
3076                 $hash = git_get_hash_by_path($hash_base, $file_name);
3077         }
3078         if (defined $hash) {
3079                 $ftype = git_get_type($hash);
3080         }
3081         git_print_page_path($file_name, $ftype, $hash_base);
3082
3083         open my $fd, "-|",
3084                 $GIT, "rev-list", "--full-history", $hash_base, "--", $file_name;
3085         git_history_body($fd, $refs, $hash_base, $ftype);
3086
3087         close $fd;
3088         git_footer_html();
3089 }
3090
3091 sub git_search {
3092         if (!defined $searchtext) {
3093                 die_error(undef, "Text field empty");
3094         }
3095         if (!defined $hash) {
3096                 $hash = git_get_head_hash($project);
3097         }
3098         my %co = parse_commit($hash);
3099         if (!%co) {
3100                 die_error(undef, "Unknown commit object");
3101         }
3102         # pickaxe may take all resources of your box and run for several minutes
3103         # with every query - so decide by yourself how public you make this feature :)
3104         my $commit_search = 1;
3105         my $author_search = 0;
3106         my $committer_search = 0;
3107         my $pickaxe_search = 0;
3108         if ($searchtext =~ s/^author\\://i) {
3109                 $author_search = 1;
3110         } elsif ($searchtext =~ s/^committer\\://i) {
3111                 $committer_search = 1;
3112         } elsif ($searchtext =~ s/^pickaxe\\://i) {
3113                 $commit_search = 0;
3114                 $pickaxe_search = 1;
3115         }
3116         git_header_html();
3117         git_print_page_nav('','', $hash,$co{'tree'},$hash);
3118         git_print_header_div('commit', esc_html($co{'title'}), $hash);
3119
3120         print "<table cellspacing=\"0\">\n";
3121         my $alternate = 0;
3122         if ($commit_search) {
3123                 $/ = "\0";
3124                 open my $fd, "-|", $GIT, "rev-list", "--header", "--parents", $hash or next;
3125                 while (my $commit_text = <$fd>) {
3126                         if (!grep m/$searchtext/i, $commit_text) {
3127                                 next;
3128                         }
3129                         if ($author_search && !grep m/\nauthor .*$searchtext/i, $commit_text) {
3130                                 next;
3131                         }
3132                         if ($committer_search && !grep m/\ncommitter .*$searchtext/i, $commit_text) {
3133                                 next;
3134                         }
3135                         my @commit_lines = split "\n", $commit_text;
3136                         my %co = parse_commit(undef, \@commit_lines);
3137                         if (!%co) {
3138                                 next;
3139                         }
3140                         if ($alternate) {
3141                                 print "<tr class=\"dark\">\n";
3142                         } else {
3143                                 print "<tr class=\"light\">\n";
3144                         }
3145                         $alternate ^= 1;
3146                         print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
3147                               "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 5)) . "</i></td>\n" .
3148                               "<td>" .
3149                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}), -class => "list subject"},
3150                                        esc_html(chop_str($co{'title'}, 50)) . "<br/>");
3151                         my $comment = $co{'comment'};
3152                         foreach my $line (@$comment) {
3153                                 if ($line =~ m/^(.*)($searchtext)(.*)$/i) {
3154                                         my $lead = esc_html($1) || "";
3155                                         $lead = chop_str($lead, 30, 10);
3156                                         my $match = esc_html($2) || "";
3157                                         my $trail = esc_html($3) || "";
3158                                         $trail = chop_str($trail, 30, 10);
3159                                         my $text = "$lead<span class=\"match\">$match</span>$trail";
3160                                         print chop_str($text, 80, 5) . "<br/>\n";
3161                                 }
3162                         }
3163                         print "</td>\n" .
3164                               "<td class=\"link\">" .
3165                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})}, "commit") .
3166                               " | " .
3167                               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$co{'id'})}, "tree");
3168                         print "</td>\n" .
3169                               "</tr>\n";
3170                 }
3171                 close $fd;
3172         }
3173
3174         if ($pickaxe_search) {
3175                 $/ = "\n";
3176                 open my $fd, "-|", "$GIT rev-list $hash | $GIT diff-tree -r --stdin -S\'$searchtext\'";
3177                 undef %co;
3178                 my @files;
3179                 while (my $line = <$fd>) {
3180                         if (%co && $line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)\t(.*)$/) {
3181                                 my %set;
3182                                 $set{'file'} = $6;
3183                                 $set{'from_id'} = $3;
3184                                 $set{'to_id'} = $4;
3185                                 $set{'id'} = $set{'to_id'};
3186                                 if ($set{'id'} =~ m/0{40}/) {
3187                                         $set{'id'} = $set{'from_id'};
3188                                 }
3189                                 if ($set{'id'} =~ m/0{40}/) {
3190                                         next;
3191                                 }
3192                                 push @files, \%set;
3193                         } elsif ($line =~ m/^([0-9a-fA-F]{40})$/){
3194                                 if (%co) {
3195                                         if ($alternate) {
3196                                                 print "<tr class=\"dark\">\n";
3197                                         } else {
3198                                                 print "<tr class=\"light\">\n";
3199                                         }
3200                                         $alternate ^= 1;
3201                                         print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
3202                                               "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 5)) . "</i></td>\n" .
3203                                               "<td>" .
3204                                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}),
3205                                                       -class => "list subject"},
3206                                                       esc_html(chop_str($co{'title'}, 50)) . "<br/>");
3207                                         while (my $setref = shift @files) {
3208                                                 my %set = %$setref;
3209                                                 print $cgi->a({-href => href(action=>"blob", hash_base=>$co{'id'},
3210                                                                              hash=>$set{'id'}, file_name=>$set{'file'}),
3211                                                               -class => "list"},
3212                                                               "<span class=\"match\">" . esc_html($set{'file'}) . "</span>") .
3213                                                       "<br/>\n";
3214                                         }
3215                                         print "</td>\n" .
3216                                               "<td class=\"link\">" .
3217                                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})}, "commit") .
3218                                               " | " .
3219                                               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$co{'id'})}, "tree");
3220                                         print "</td>\n" .
3221                                               "</tr>\n";
3222                                 }
3223                                 %co = parse_commit($1);
3224                         }
3225                 }
3226                 close $fd;
3227         }
3228         print "</table>\n";
3229         git_footer_html();
3230 }
3231
3232 sub git_shortlog {
3233         my $head = git_get_head_hash($project);
3234         if (!defined $hash) {
3235                 $hash = $head;
3236         }
3237         if (!defined $page) {
3238                 $page = 0;
3239         }
3240         my $refs = git_get_references();
3241
3242         my $limit = sprintf("--max-count=%i", (100 * ($page+1)));
3243         open my $fd, "-|", $GIT, "rev-list", $limit, $hash
3244                 or die_error(undef, "Open git-rev-list failed");
3245         my @revlist = map { chomp; $_ } <$fd>;
3246         close $fd;
3247
3248         my $paging_nav = format_paging_nav('shortlog', $hash, $head, $page, $#revlist);
3249         my $next_link = '';
3250         if ($#revlist >= (100 * ($page+1)-1)) {
3251                 $next_link =
3252                         $cgi->a({-href => href(action=>"shortlog", hash=>$hash, page=>$page+1),
3253                                  -title => "Alt-n"}, "next");
3254         }
3255
3256
3257         git_header_html();
3258         git_print_page_nav('shortlog','', $hash,$hash,$hash, $paging_nav);
3259         git_print_header_div('summary', $project);
3260
3261         git_shortlog_body(\@revlist, ($page * 100), $#revlist, $refs, $next_link);
3262
3263         git_footer_html();
3264 }
3265
3266 ## ......................................................................
3267 ## feeds (RSS, OPML)
3268
3269 sub git_rss {
3270         # http://www.notestips.com/80256B3A007F2692/1/NAMO5P9UPQ
3271         open my $fd, "-|", $GIT, "rev-list", "--max-count=150", git_get_head_hash($project)
3272                 or die_error(undef, "Open git-rev-list failed");
3273         my @revlist = map { chomp; $_ } <$fd>;
3274         close $fd or die_error(undef, "Reading git-rev-list failed");
3275         print $cgi->header(-type => 'text/xml', -charset => 'utf-8');
3276         print <<XML;
3277 <?xml version="1.0" encoding="utf-8"?>
3278 <rss version="2.0" xmlns:content="http://purl.org/rss/1.0/modules/content/">
3279 <channel>
3280 <title>$project $my_uri $my_url</title>
3281 <link>${\esc_html("$my_url?p=$project;a=summary")}</link>
3282 <description>$project log</description>
3283 <language>en</language>
3284 XML
3285
3286         for (my $i = 0; $i <= $#revlist; $i++) {
3287                 my $commit = $revlist[$i];
3288                 my %co = parse_commit($commit);
3289                 # we read 150, we always show 30 and the ones more recent than 48 hours
3290                 if (($i >= 20) && ((time - $co{'committer_epoch'}) > 48*60*60)) {
3291                         last;
3292                 }
3293                 my %cd = parse_date($co{'committer_epoch'});
3294                 open $fd, "-|", $GIT, "diff-tree", '-r', @diff_opts,
3295                         $co{'parent'}, $co{'id'}
3296                         or next;
3297                 my @difftree = map { chomp; $_ } <$fd>;
3298                 close $fd
3299                         or next;
3300                 print "<item>\n" .
3301                       "<title>" .
3302                       sprintf("%d %s %02d:%02d", $cd{'mday'}, $cd{'month'}, $cd{'hour'}, $cd{'minute'}) . " - " . esc_html($co{'title'}) .
3303                       "</title>\n" .
3304                       "<author>" . esc_html($co{'author'}) . "</author>\n" .
3305                       "<pubDate>$cd{'rfc2822'}</pubDate>\n" .
3306                       "<guid isPermaLink=\"true\">" . esc_html("$my_url?p=$project;a=commit;h=$commit") . "</guid>\n" .
3307                       "<link>" . esc_html("$my_url?p=$project;a=commit;h=$commit") . "</link>\n" .
3308                       "<description>" . esc_html($co{'title'}) . "</description>\n" .
3309                       "<content:encoded>" .
3310                       "<![CDATA[\n";
3311                 my $comment = $co{'comment'};
3312                 foreach my $line (@$comment) {
3313                         $line = decode("utf8", $line, Encode::FB_DEFAULT);
3314                         print "$line<br/>\n";
3315                 }
3316                 print "<br/>\n";
3317                 foreach my $line (@difftree) {
3318                         if (!($line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)([0-9]{0,3})\t(.*)$/)) {
3319                                 next;
3320                         }
3321                         my $file = validate_input(unquote($7));
3322                         $file = decode("utf8", $file, Encode::FB_DEFAULT);
3323                         print "$file<br/>\n";
3324                 }
3325                 print "]]>\n" .
3326                       "</content:encoded>\n" .
3327                       "</item>\n";
3328         }
3329         print "</channel></rss>";
3330 }
3331
3332 sub git_opml {
3333         my @list = git_get_projects_list();
3334
3335         print $cgi->header(-type => 'text/xml', -charset => 'utf-8');
3336         print <<XML;
3337 <?xml version="1.0" encoding="utf-8"?>
3338 <opml version="1.0">
3339 <head>
3340   <title>$site_name Git OPML Export</title>
3341 </head>
3342 <body>
3343 <outline text="git RSS feeds">
3344 XML
3345
3346         foreach my $pr (@list) {
3347                 my %proj = %$pr;
3348                 my $head = git_get_head_hash($proj{'path'});
3349                 if (!defined $head) {
3350                         next;
3351                 }
3352                 $ENV{'GIT_DIR'} = "$projectroot/$proj{'path'}";
3353                 my %co = parse_commit($head);
3354                 if (!%co) {
3355                         next;
3356                 }
3357
3358                 my $path = esc_html(chop_str($proj{'path'}, 25, 5));
3359                 my $rss  = "$my_url?p=$proj{'path'};a=rss";
3360                 my $html = "$my_url?p=$proj{'path'};a=summary";
3361                 print "<outline type=\"rss\" text=\"$path\" title=\"$path\" xmlUrl=\"$rss\" htmlUrl=\"$html\"/>\n";
3362         }
3363         print <<XML;
3364 </outline>
3365 </body>
3366 </opml>
3367 XML
3368 }