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 binmode STDOUT, ':utf8';
  19
  20 our $cgi = new CGI;
  21 our $version = "++GIT_VERSION++";
  22 our $my_url = $cgi->url();
  23 our $my_uri = $cgi->url(-absolute => 1);
  24
  25 # core git executable to use
  26 # this can just be "git" if your webserver has a sensible PATH
  27 our $GIT = "++GIT_BINDIR++/git";
  28
  29 # absolute fs-path which will be prepended to the project path
  30 #our $projectroot = "/pub/scm";
  31 our $projectroot = "++GITWEB_PROJECTROOT++";
  32
  33 # location for temporary files needed for diffs
  34 our $git_temp = "/tmp/gitweb";
  35
  36 # target of the home link on top of all pages
  37 our $home_link = $my_uri;
  38
  39 # name of your site or organization to appear in page titles
  40 # replace this with something more descriptive for clearer bookmarks
  41 our $site_name = "++GITWEB_SITENAME++" || $ENV{'SERVER_NAME'} || "Untitled";
  42
  43 # html text to include at home page
  44 our $home_text = "++GITWEB_HOMETEXT++";
  45
  46 # URI of default stylesheet
  47 our $stylesheet = "++GITWEB_CSS++";
  48 # URI of GIT logo
  49 our $logo = "++GITWEB_LOGO++";
  50
  51 # source of projects list
  52 our $projects_list = "++GITWEB_LIST++";
  53
  54 # default blob_plain mimetype and default charset for text/plain blob
  55 our $default_blob_plain_mimetype = 'text/plain';
  56 our $default_text_plain_charset  = undef;
  57
  58 # file to use for guessing MIME types before trying /etc/mime.types
  59 # (relative to the current git repository)
  60 our $mimetypes_file = undef;
  61
  62 our $GITWEB_CONFIG = $ENV{'GITWEB_CONFIG'} || "++GITWEB_CONFIG++";
  63 require $GITWEB_CONFIG if -e $GITWEB_CONFIG;
  64
  65 # version of the core git binary
  66 our $git_version = qx($GIT --version) =~ m/git version (.*)$/ ? $1 : "unknown";
  67
  68 $projects_list ||= $projectroot;
  69 if (! -d $git_temp) {
  70         mkdir($git_temp, 0700) || die_error(undef, "Couldn't mkdir $git_temp");
  71 }
  72
  73 # ======================================================================
  74 # input validation and dispatch
  75 our $action = $cgi->param('a');
  76 if (defined $action) {
  77         if ($action =~ m/[^0-9a-zA-Z\.\-_]/) {
  78                 die_error(undef, "Invalid action parameter");
  79         }
  80         # action which does not check rest of parameters
  81         if ($action eq "opml") {
  82                 git_opml();
  83                 exit;
  84         }
  85 }
  86
  87 our $project = ($cgi->param('p') || $ENV{'PATH_INFO'});
  88 if (defined $project) {
  89         $project =~ s|^/||;
  90         $project =~ s|/$||;
  91 }
  92 if (defined $project && $project) {
  93         if (!validate_input($project)) {
  94                 die_error(undef, "Invalid project parameter");
  95         }
  96         if (!(-d "$projectroot/$project")) {
  97                 die_error(undef, "No such directory");
  98         }
  99         if (!(-e "$projectroot/$project/HEAD")) {
 100                 die_error(undef, "No such project");
 101         }
 102         $ENV{'GIT_DIR'} = "$projectroot/$project";
 103 } else {
 104         git_project_list();
 105         exit;
 106 }
 107
 108 our $file_name = $cgi->param('f');
 109 if (defined $file_name) {
 110         if (!validate_input($file_name)) {
 111                 die_error(undef, "Invalid file parameter");
 112         }
 113 }
 114
 115 our $hash = $cgi->param('h');
 116 if (defined $hash) {
 117         if (!validate_input($hash)) {
 118                 die_error(undef, "Invalid hash parameter");
 119         }
 120 }
 121
 122 our $hash_parent = $cgi->param('hp');
 123 if (defined $hash_parent) {
 124         if (!validate_input($hash_parent)) {
 125                 die_error(undef, "Invalid hash parent parameter");
 126         }
 127 }
 128
 129 our $hash_base = $cgi->param('hb');
 130 if (defined $hash_base) {
 131         if (!validate_input($hash_base)) {
 132                 die_error(undef, "Invalid hash base parameter");
 133         }
 134 }
 135
 136 our $page = $cgi->param('pg');
 137 if (defined $page) {
 138         if ($page =~ m/[^0-9]$/) {
 139                 die_error(undef, "Invalid page parameter");
 140         }
 141 }
 142
 143 our $searchtext = $cgi->param('s');
 144 if (defined $searchtext) {
 145         if ($searchtext =~ m/[^a-zA-Z0-9_\.\/\-\+\:\@ ]/) {
 146                 die_error(undef, "Invalid search parameter");
 147         }
 148         $searchtext = quotemeta $searchtext;
 149 }
 150
 151 # dispatch
 152 my %actions = (
 153         "blame" => \&git_blame2,
 154         "blobdiff" => \&git_blobdiff,
 155         "blobdiff_plain" => \&git_blobdiff_plain,
 156         "blob" => \&git_blob,
 157         "blob_plain" => \&git_blob_plain,
 158         "commitdiff" => \&git_commitdiff,
 159         "commitdiff_plain" => \&git_commitdiff_plain,
 160         "commit" => \&git_commit,
 161         "heads" => \&git_heads,
 162         "history" => \&git_history,
 163         "log" => \&git_log,
 164         "rss" => \&git_rss,
 165         "search" => \&git_search,
 166         "shortlog" => \&git_shortlog,
 167         "summary" => \&git_summary,
 168         "tag" => \&git_tag,
 169         "tags" => \&git_tags,
 170         "tree" => \&git_tree,
 171 );
 172
 173 $action = 'summary' if (!defined($action));
 174 if (!defined($actions{$action})) {
 175         die_error(undef, "Unknown action");
 176 }
 177 $actions{$action}->();
 178 exit;
 179
 180 ## ======================================================================
 181 ## validation, quoting/unquoting and escaping
 182
 183 sub validate_input {
 184         my $input = shift;
 185
 186         if ($input =~ m/^[0-9a-fA-F]{40}$/) {
 187                 return $input;
 188         }
 189         if ($input =~ m/(^|\/)(|\.|\.\.)($|\/)/) {
 190                 return undef;
 191         }
 192         if ($input =~ m/[^a-zA-Z0-9_\x80-\xff\ \t\.\/\-\+\#\~\%]/) {
 193                 return undef;
 194         }
 195         return $input;
 196 }
 197
 198 # quote unsafe chars, but keep the slash, even when it's not
 199 # correct, but quoted slashes look too horrible in bookmarks
 200 sub esc_param {
 201         my $str = shift;
 202         $str =~ s/([^A-Za-z0-9\-_.~();\/;?:@&=])/sprintf("%%%02X", ord($1))/eg;
 203         $str =~ s/\+/%2B/g;
 204         $str =~ s/ /\+/g;
 205         return $str;
 206 }
 207
 208 # replace invalid utf8 character with SUBSTITUTION sequence
 209 sub esc_html {
 210         my $str = shift;
 211         $str = decode("utf8", $str, Encode::FB_DEFAULT);
 212         $str = escapeHTML($str);
 213         $str =~ s/\014/^L/g; # escape FORM FEED (FF) character (e.g. in COPYING file)
 214         return $str;
 215 }
 216
 217 # git may return quoted and escaped filenames
 218 sub unquote {
 219         my $str = shift;
 220         if ($str =~ m/^"(.*)"$/) {
 221                 $str = $1;
 222                 $str =~ s/\\([0-7]{1,3})/chr(oct($1))/eg;
 223         }
 224         return $str;
 225 }
 226
 227 # escape tabs (convert tabs to spaces)
 228 sub untabify {
 229         my $line = shift;
 230
 231         while ((my $pos = index($line, "\t")) != -1) {
 232                 if (my $count = (8 - ($pos % 8))) {
 233                         my $spaces = ' ' x $count;
 234                         $line =~ s/\t/$spaces/;
 235                 }
 236         }
 237
 238         return $line;
 239 }
 240
 241 ## ----------------------------------------------------------------------
 242 ## HTML aware string manipulation
 243
 244 sub chop_str {
 245         my $str = shift;
 246         my $len = shift;
 247         my $add_len = shift || 10;
 248
 249         # allow only $len chars, but don't cut a word if it would fit in $add_len
 250         # if it doesn't fit, cut it if it's still longer than the dots we would add
 251         $str =~ m/^(.{0,$len}[^ \/\-_:\.@]{0,$add_len})(.*)/;
 252         my $body = $1;
 253         my $tail = $2;
 254         if (length($tail) > 4) {
 255                 $tail = " ...";
 256                 $body =~ s/&[^;]*$//; # remove chopped character entities
 257         }
 258         return "$body$tail";
 259 }
 260
 261 ## ----------------------------------------------------------------------
 262 ## functions returning short strings
 263
 264 # CSS class for given age value (in seconds)
 265 sub age_class {
 266         my $age = shift;
 267
 268         if ($age < 60*60*2) {
 269                 return "age0";
 270         } elsif ($age < 60*60*24*2) {
 271                 return "age1";
 272         } else {
 273                 return "age2";
 274         }
 275 }
 276
 277 # convert age in seconds to "nn units ago" string
 278 sub age_string {
 279         my $age = shift;
 280         my $age_str;
 281
 282         if ($age > 60*60*24*365*2) {
 283                 $age_str = (int $age/60/60/24/365);
 284                 $age_str .= " years ago";
 285         } elsif ($age > 60*60*24*(365/12)*2) {
 286                 $age_str = int $age/60/60/24/(365/12);
 287                 $age_str .= " months ago";
 288         } elsif ($age > 60*60*24*7*2) {
 289                 $age_str = int $age/60/60/24/7;
 290                 $age_str .= " weeks ago";
 291         } elsif ($age > 60*60*24*2) {
 292                 $age_str = int $age/60/60/24;
 293                 $age_str .= " days ago";
 294         } elsif ($age > 60*60*2) {
 295                 $age_str = int $age/60/60;
 296                 $age_str .= " hours ago";
 297         } elsif ($age > 60*2) {
 298                 $age_str = int $age/60;
 299                 $age_str .= " min ago";
 300         } elsif ($age > 2) {
 301                 $age_str = int $age;
 302                 $age_str .= " sec ago";
 303         } else {
 304                 $age_str .= " right now";
 305         }
 306         return $age_str;
 307 }
 308
 309 # convert file mode in octal to symbolic file mode string
 310 sub mode_str {
 311         my $mode = oct shift;
 312
 313         if (S_ISDIR($mode & S_IFMT)) {
 314                 return 'drwxr-xr-x';
 315         } elsif (S_ISLNK($mode)) {
 316                 return 'lrwxrwxrwx';
 317         } elsif (S_ISREG($mode)) {
 318                 # git cares only about the executable bit
 319                 if ($mode & S_IXUSR) {
 320                         return '-rwxr-xr-x';
 321                 } else {
 322                         return '-rw-r--r--';
 323                 };
 324         } else {
 325                 return '----------';
 326         }
 327 }
 328
 329 # convert file mode in octal to file type string
 330 sub file_type {
 331         my $mode = oct shift;
 332
 333         if (S_ISDIR($mode & S_IFMT)) {
 334                 return "directory";
 335         } elsif (S_ISLNK($mode)) {
 336                 return "symlink";
 337         } elsif (S_ISREG($mode)) {
 338                 return "file";
 339         } else {
 340                 return "unknown";
 341         }
 342 }
 343
 344 ## ----------------------------------------------------------------------
 345 ## functions returning short HTML fragments, or transforming HTML fragments
 346 ## which don't beling to other sections
 347
 348 # format line of commit message or tag comment
 349 sub format_log_line_html {
 350         my $line = shift;
 351
 352         $line = esc_html($line);
 353         $line =~ s/ /&nbsp;/g;
 354         if ($line =~ m/([0-9a-fA-F]{40})/) {
 355                 my $hash_text = $1;
 356                 if (git_get_type($hash_text) eq "commit") {
 357                         my $link = $cgi->a({-class => "text", -href => "$my_uri?" . esc_param("p=$project;a=commit;h=$hash_text")}, $hash_text);
 358                         $line =~ s/$hash_text/$link/;
 359                 }
 360         }
 361         return $line;
 362 }
 363
 364 # format marker of refs pointing to given object
 365 sub format_ref_marker {
 366         my ($refs, $id) = @_;
 367         my $markers = '';
 368
 369         if (defined $refs->{$id}) {
 370                 foreach my $ref (@{$refs->{$id}}) {
 371                         my ($type, $name) = qw();
 372                         # e.g. tags/v2.6.11 or heads/next
 373                         if ($ref =~ m!^(.*?)s?/(.*)$!) {
 374                                 $type = $1;
 375                                 $name = $2;
 376                         } else {
 377                                 $type = "ref";
 378                                 $name = $ref;
 379                         }
 380
 381                         $markers .= " <span class=\"$type\">" . esc_html($name) . "</span>";
 382                 }
 383         }
 384
 385         if ($markers) {
 386                 return ' <span class="refs">'. $markers . '</span>';
 387         } else {
 388                 return "";
 389         }
 390 }
 391
 392 # format, perhaps shortened and with markers, title line
 393 sub format_subject_html {
 394         my ($long, $short, $query, $extra) = @_;
 395         $extra = '' unless defined($extra);
 396
 397         if (length($short) < length($long)) {
 398                 return $cgi->a({-href => "$my_uri?" . esc_param($query),
 399                                -class => "list", -title => $long},
 400                        esc_html($short) . $extra);
 401         } else {
 402                 return $cgi->a({-href => "$my_uri?" . esc_param($query),
 403                                -class => "list"},
 404                        esc_html($long)  . $extra);
 405         }
 406 }
 407
 408 ## ----------------------------------------------------------------------
 409 ## git utility subroutines, invoking git commands
 410
 411 # get HEAD ref of given project as hash
 412 sub git_get_head_hash {
 413         my $project = shift;
 414         my $oENV = $ENV{'GIT_DIR'};
 415         my $retval = undef;
 416         $ENV{'GIT_DIR'} = "$projectroot/$project";
 417         if (open my $fd, "-|", $GIT, "rev-parse", "--verify", "HEAD") {
 418                 my $head = <$fd>;
 419                 close $fd;
 420                 if (defined $head && $head =~ /^([0-9a-fA-F]{40})$/) {
 421                         $retval = $1;
 422                 }
 423         }
 424         if (defined $oENV) {
 425                 $ENV{'GIT_DIR'} = $oENV;
 426         }
 427         return $retval;
 428 }
 429
 430 # get type of given object
 431 sub git_get_type {
 432         my $hash = shift;
 433
 434         open my $fd, "-|", $GIT, "cat-file", '-t', $hash or return;
 435         my $type = <$fd>;
 436         close $fd or return;
 437         chomp $type;
 438         return $type;
 439 }
 440
 441 sub git_get_project_config {
 442         my $key = shift;
 443
 444         return unless ($key);
 445         $key =~ s/^gitweb\.//;
 446         return if ($key =~ m/\W/);
 447
 448         my $val = qx($GIT repo-config --get gitweb.$key);
 449         return ($val);
 450 }
 451
 452 sub git_get_project_config_bool {
 453         my $val = git_get_project_config (@_);
 454         if ($val and $val =~ m/true|yes|on/) {
 455                 return (1);
 456         }
 457         return; # implicit false
 458 }
 459
 460 # get hash of given path at given ref
 461 sub git_get_hash_by_path {
 462         my $base = shift;
 463         my $path = shift || return undef;
 464
 465         my $tree = $base;
 466
 467         open my $fd, "-|", $GIT, "ls-tree", $base, "--", $path
 468                 or die_error(undef, "Open git-ls-tree failed");
 469         my $line = <$fd>;
 470         close $fd or return undef;
 471
 472         #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
 473         $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t(.+)$/;
 474         return $3;
 475 }
 476
 477 ## ......................................................................
 478 ## git utility functions, directly accessing git repository
 479
 480 # assumes that PATH is not symref
 481 sub git_get_hash_by_ref {
 482         my $path = shift;
 483
 484         open my $fd, "$projectroot/$path" or return undef;
 485         my $head = <$fd>;
 486         close $fd;
 487         chomp $head;
 488         if ($head =~ m/^[0-9a-fA-F]{40}$/) {
 489                 return $head;
 490         }
 491 }
 492
 493 sub git_get_project_description {
 494         my $path = shift;
 495
 496         open my $fd, "$projectroot/$path/description" or return undef;
 497         my $descr = <$fd>;
 498         close $fd;
 499         chomp $descr;
 500         return $descr;
 501 }
 502
 503 sub git_get_projects_list {
 504         my @list;
 505
 506         if (-d $projects_list) {
 507                 # search in directory
 508                 my $dir = $projects_list;
 509                 opendir my ($dh), $dir or return undef;
 510                 while (my $dir = readdir($dh)) {
 511                         if (-e "$projectroot/$dir/HEAD") {
 512                                 my $pr = {
 513                                         path => $dir,
 514                                 };
 515                                 push @list, $pr
 516                         }
 517                 }
 518                 closedir($dh);
 519         } elsif (-f $projects_list) {
 520                 # read from file(url-encoded):
 521                 # 'git%2Fgit.git Linus+Torvalds'
 522                 # 'libs%2Fklibc%2Fklibc.git H.+Peter+Anvin'
 523                 # 'linux%2Fhotplug%2Fudev.git Greg+Kroah-Hartman'
 524                 open my ($fd), $projects_list or return undef;
 525                 while (my $line = <$fd>) {
 526                         chomp $line;
 527                         my ($path, $owner) = split ' ', $line;
 528                         $path = unescape($path);
 529                         $owner = unescape($owner);
 530                         if (!defined $path) {
 531                                 next;
 532                         }
 533                         if (-e "$projectroot/$path/HEAD") {
 534                                 my $pr = {
 535                                         path => $path,
 536                                         owner => decode("utf8", $owner, Encode::FB_DEFAULT),
 537                                 };
 538                                 push @list, $pr
 539                         }
 540                 }
 541                 close $fd;
 542         }
 543         @list = sort {$a->{'path'} cmp $b->{'path'}} @list;
 544         return @list;
 545 }
 546
 547 sub git_get_project_owner {
 548         my $project = shift;
 549         my $owner;
 550
 551         return undef unless $project;
 552
 553         # read from file (url-encoded):
 554         # 'git%2Fgit.git Linus+Torvalds'
 555         # 'libs%2Fklibc%2Fklibc.git H.+Peter+Anvin'
 556         # 'linux%2Fhotplug%2Fudev.git Greg+Kroah-Hartman'
 557         if (-f $projects_list) {
 558                 open (my $fd , $projects_list);
 559                 while (my $line = <$fd>) {
 560                         chomp $line;
 561                         my ($pr, $ow) = split ' ', $line;
 562                         $pr = unescape($pr);
 563                         $ow = unescape($ow);
 564                         if ($pr eq $project) {
 565                                 $owner = decode("utf8", $ow, Encode::FB_DEFAULT);
 566                                 last;
 567                         }
 568                 }
 569                 close $fd;
 570         }
 571         if (!defined $owner) {
 572                 $owner = get_file_owner("$projectroot/$project");
 573         }
 574
 575         return $owner;
 576 }
 577
 578 sub git_get_references {
 579         my $type = shift || "";
 580         my %refs;
 581         my $fd;
 582         # 5dc01c595e6c6ec9ccda4f6f69c131c0dd945f8c      refs/tags/v2.6.11
 583         # c39ae07f393806ccf406ef966e9a15afc43cc36a      refs/tags/v2.6.11^{}
 584         if (-f "$projectroot/$project/info/refs") {
 585                 open $fd, "$projectroot/$project/info/refs"
 586                         or return;
 587         } else {
 588                 open $fd, "-|", $GIT, "ls-remote", "."
 589                         or return;
 590         }
 591
 592         while (my $line = <$fd>) {
 593                 chomp $line;
 594                 if ($line =~ m/^([0-9a-fA-F]{40})\trefs\/($type\/?[^\^]+)/) {
 595                         if (defined $refs{$1}) {
 596                                 push @{$refs{$1}}, $2;
 597                         } else {
 598                                 $refs{$1} = [ $2 ];
 599                         }
 600                 }
 601         }
 602         close $fd or return;
 603         return \%refs;
 604 }
 605
 606 ## ----------------------------------------------------------------------
 607 ## parse to hash functions
 608
 609 sub parse_date {
 610         my $epoch = shift;
 611         my $tz = shift || "-0000";
 612
 613         my %date;
 614         my @months = ("Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec");
 615         my @days = ("Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat");
 616         my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($epoch);
 617         $date{'hour'} = $hour;
 618         $date{'minute'} = $min;
 619         $date{'mday'} = $mday;
 620         $date{'day'} = $days[$wday];
 621         $date{'month'} = $months[$mon];
 622         $date{'rfc2822'} = sprintf "%s, %d %s %4d %02d:%02d:%02d +0000", $days[$wday], $mday, $months[$mon], 1900+$year, $hour ,$min, $sec;
 623         $date{'mday-time'} = sprintf "%d %s %02d:%02d", $mday, $months[$mon], $hour ,$min;
 624
 625         $tz =~ m/^([+\-][0-9][0-9])([0-9][0-9])$/;
 626         my $local = $epoch + ((int $1 + ($2/60)) * 3600);
 627         ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($local);
 628         $date{'hour_local'} = $hour;
 629         $date{'minute_local'} = $min;
 630         $date{'tz_local'} = $tz;
 631         return %date;
 632 }
 633
 634 sub parse_tag {
 635         my $tag_id = shift;
 636         my %tag;
 637         my @comment;
 638
 639         open my $fd, "-|", $GIT, "cat-file", "tag", $tag_id or return;
 640         $tag{'id'} = $tag_id;
 641         while (my $line = <$fd>) {
 642                 chomp $line;
 643                 if ($line =~ m/^object ([0-9a-fA-F]{40})$/) {
 644                         $tag{'object'} = $1;
 645                 } elsif ($line =~ m/^type (.+)$/) {
 646                         $tag{'type'} = $1;
 647                 } elsif ($line =~ m/^tag (.+)$/) {
 648                         $tag{'name'} = $1;
 649                 } elsif ($line =~ m/^tagger (.*) ([0-9]+) (.*)$/) {
 650                         $tag{'author'} = $1;
 651                         $tag{'epoch'} = $2;
 652                         $tag{'tz'} = $3;
 653                 } elsif ($line =~ m/--BEGIN/) {
 654                         push @comment, $line;
 655                         last;
 656                 } elsif ($line eq "") {
 657                         last;
 658                 }
 659         }
 660         push @comment, <$fd>;
 661         $tag{'comment'} = \@comment;
 662         close $fd or return;
 663         if (!defined $tag{'name'}) {
 664                 return
 665         };
 666         return %tag
 667 }
 668
 669 sub parse_commit {
 670         my $commit_id = shift;
 671         my $commit_text = shift;
 672
 673         my @commit_lines;
 674         my %co;
 675
 676         if (defined $commit_text) {
 677                 @commit_lines = @$commit_text;
 678         } else {
 679                 $/ = "\0";
 680                 open my $fd, "-|", $GIT, "rev-list", "--header", "--parents", "--max-count=1", $commit_id or return;
 681                 @commit_lines = split '\n', <$fd>;
 682                 close $fd or return;
 683                 $/ = "\n";
 684                 pop @commit_lines;
 685         }
 686         my $header = shift @commit_lines;
 687         if (!($header =~ m/^[0-9a-fA-F]{40}/)) {
 688                 return;
 689         }
 690         ($co{'id'}, my @parents) = split ' ', $header;
 691         $co{'parents'} = \@parents;
 692         $co{'parent'} = $parents[0];
 693         while (my $line = shift @commit_lines) {
 694                 last if $line eq "\n";
 695                 if ($line =~ m/^tree ([0-9a-fA-F]{40})$/) {
 696                         $co{'tree'} = $1;
 697                 } elsif ($line =~ m/^author (.*) ([0-9]+) (.*)$/) {
 698                         $co{'author'} = $1;
 699                         $co{'author_epoch'} = $2;
 700                         $co{'author_tz'} = $3;
 701                         if ($co{'author'} =~ m/^([^<]+) </) {
 702                                 $co{'author_name'} = $1;
 703                         } else {
 704                                 $co{'author_name'} = $co{'author'};
 705                         }
 706                 } elsif ($line =~ m/^committer (.*) ([0-9]+) (.*)$/) {
 707                         $co{'committer'} = $1;
 708                         $co{'committer_epoch'} = $2;
 709                         $co{'committer_tz'} = $3;
 710                         $co{'committer_name'} = $co{'committer'};
 711                         $co{'committer_name'} =~ s/ <.*//;
 712                 }
 713         }
 714         if (!defined $co{'tree'}) {
 715                 return;
 716         };
 717
 718         foreach my $title (@commit_lines) {
 719                 $title =~ s/^    //;
 720                 if ($title ne "") {
 721                         $co{'title'} = chop_str($title, 80, 5);
 722                         # remove leading stuff of merges to make the interesting part visible
 723                         if (length($title) > 50) {
 724                                 $title =~ s/^Automatic //;
 725                                 $title =~ s/^merge (of|with) /Merge ... /i;
 726                                 if (length($title) > 50) {
 727                                         $title =~ s/(http|rsync):\/\///;
 728                                 }
 729                                 if (length($title) > 50) {
 730                                         $title =~ s/(master|www|rsync)\.//;
 731                                 }
 732                                 if (length($title) > 50) {
 733                                         $title =~ s/kernel.org:?//;
 734                                 }
 735                                 if (length($title) > 50) {
 736                                         $title =~ s/\/pub\/scm//;
 737                                 }
 738                         }
 739                         $co{'title_short'} = chop_str($title, 50, 5);
 740                         last;
 741                 }
 742         }
 743         # remove added spaces
 744         foreach my $line (@commit_lines) {
 745                 $line =~ s/^    //;
 746         }
 747         $co{'comment'} = \@commit_lines;
 748
 749         my $age = time - $co{'committer_epoch'};
 750         $co{'age'} = $age;
 751         $co{'age_string'} = age_string($age);
 752         my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($co{'committer_epoch'});
 753         if ($age > 60*60*24*7*2) {
 754                 $co{'age_string_date'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
 755                 $co{'age_string_age'} = $co{'age_string'};
 756         } else {
 757                 $co{'age_string_date'} = $co{'age_string'};
 758                 $co{'age_string_age'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
 759         }
 760         return %co;
 761 }
 762
 763 # parse ref from ref_file, given by ref_id, with given type
 764 sub parse_ref {
 765         my $ref_file = shift;
 766         my $ref_id = shift;
 767         my $type = shift || git_get_type($ref_id);
 768         my %ref_item;
 769
 770         $ref_item{'type'} = $type;
 771         $ref_item{'id'} = $ref_id;
 772         $ref_item{'epoch'} = 0;
 773         $ref_item{'age'} = "unknown";
 774         if ($type eq "tag") {
 775                 my %tag = parse_tag($ref_id);
 776                 $ref_item{'comment'} = $tag{'comment'};
 777                 if ($tag{'type'} eq "commit") {
 778                         my %co = parse_commit($tag{'object'});
 779                         $ref_item{'epoch'} = $co{'committer_epoch'};
 780                         $ref_item{'age'} = $co{'age_string'};
 781                 } elsif (defined($tag{'epoch'})) {
 782                         my $age = time - $tag{'epoch'};
 783                         $ref_item{'epoch'} = $tag{'epoch'};
 784                         $ref_item{'age'} = age_string($age);
 785                 }
 786                 $ref_item{'reftype'} = $tag{'type'};
 787                 $ref_item{'name'} = $tag{'name'};
 788                 $ref_item{'refid'} = $tag{'object'};
 789         } elsif ($type eq "commit"){
 790                 my %co = parse_commit($ref_id);
 791                 $ref_item{'reftype'} = "commit";
 792                 $ref_item{'name'} = $ref_file;
 793                 $ref_item{'title'} = $co{'title'};
 794                 $ref_item{'refid'} = $ref_id;
 795                 $ref_item{'epoch'} = $co{'committer_epoch'};
 796                 $ref_item{'age'} = $co{'age_string'};
 797         } else {
 798                 $ref_item{'reftype'} = $type;
 799                 $ref_item{'name'} = $ref_file;
 800                 $ref_item{'refid'} = $ref_id;
 801         }
 802
 803         return %ref_item;
 804 }
 805
 806 ## ......................................................................
 807 ## parse to array of hashes functions
 808
 809 sub git_get_refs_list {
 810         my $ref_dir = shift;
 811         my @reflist;
 812
 813         my @refs;
 814         my $pfxlen = length("$projectroot/$project/$ref_dir");
 815         File::Find::find(sub {
 816                 return if (/^\./);
 817                 if (-f $_) {
 818                         push @refs, substr($File::Find::name, $pfxlen + 1);
 819                 }
 820         }, "$projectroot/$project/$ref_dir");
 821
 822         foreach my $ref_file (@refs) {
 823                 my $ref_id = git_get_hash_by_ref("$project/$ref_dir/$ref_file");
 824                 my $type = git_get_type($ref_id) || next;
 825                 my %ref_item = parse_ref($ref_file, $ref_id, $type);
 826
 827                 push @reflist, \%ref_item;
 828         }
 829         # sort refs by age
 830         @reflist = sort {$b->{'epoch'} <=> $a->{'epoch'}} @reflist;
 831         return \@reflist;
 832 }
 833
 834 ## ----------------------------------------------------------------------
 835 ## filesystem-related functions
 836
 837 sub get_file_owner {
 838         my $path = shift;
 839
 840         my ($dev, $ino, $mode, $nlink, $st_uid, $st_gid, $rdev, $size) = stat($path);
 841         my ($name, $passwd, $uid, $gid, $quota, $comment, $gcos, $dir, $shell) = getpwuid($st_uid);
 842         if (!defined $gcos) {
 843                 return undef;
 844         }
 845         my $owner = $gcos;
 846         $owner =~ s/[,;].*$//;
 847         return decode("utf8", $owner, Encode::FB_DEFAULT);
 848 }
 849
 850 ## ......................................................................
 851 ## mimetype related functions
 852
 853 sub mimetype_guess_file {
 854         my $filename = shift;
 855         my $mimemap = shift;
 856         -r $mimemap or return undef;
 857
 858         my %mimemap;
 859         open(MIME, $mimemap) or return undef;
 860         while (<MIME>) {
 861                 next if m/^#/; # skip comments
 862                 my ($mime, $exts) = split(/\t+/);
 863                 if (defined $exts) {
 864                         my @exts = split(/\s+/, $exts);
 865                         foreach my $ext (@exts) {
 866                                 $mimemap{$ext} = $mime;
 867                         }
 868                 }
 869         }
 870         close(MIME);
 871
 872         $filename =~ /\.(.*?)$/;
 873         return $mimemap{$1};
 874 }
 875
 876 sub mimetype_guess {
 877         my $filename = shift;
 878         my $mime;
 879         $filename =~ /\./ or return undef;
 880
 881         if ($mimetypes_file) {
 882                 my $file = $mimetypes_file;
 883                 if ($file !~ m!^/!) { # if it is relative path
 884                         # it is relative to project
 885                         $file = "$projectroot/$project/$file";
 886                 }
 887                 $mime = mimetype_guess_file($filename, $file);
 888         }
 889         $mime ||= mimetype_guess_file($filename, '/etc/mime.types');
 890         return $mime;
 891 }
 892
 893 sub blob_mimetype {
 894         my $fd = shift;
 895         my $filename = shift;
 896
 897         if ($filename) {
 898                 my $mime = mimetype_guess($filename);
 899                 $mime and return $mime;
 900         }
 901
 902         # just in case
 903         return $default_blob_plain_mimetype unless $fd;
 904
 905         if (-T $fd) {
 906                 return 'text/plain' .
 907                        ($default_text_plain_charset ? '; charset='.$default_text_plain_charset : '');
 908         } elsif (! $filename) {
 909                 return 'application/octet-stream';
 910         } elsif ($filename =~ m/\.png$/i) {
 911                 return 'image/png';
 912         } elsif ($filename =~ m/\.gif$/i) {
 913                 return 'image/gif';
 914         } elsif ($filename =~ m/\.jpe?g$/i) {
 915                 return 'image/jpeg';
 916         } else {
 917                 return 'application/octet-stream';
 918         }
 919 }
 920
 921 ## ======================================================================
 922 ## functions printing HTML: header, footer, error page
 923
 924 sub git_header_html {
 925         my $status = shift || "200 OK";
 926         my $expires = shift;
 927
 928         my $title = "$site_name git";
 929         if (defined $project) {
 930                 $title .= " - $project";
 931                 if (defined $action) {
 932                         $title .= "/$action";
 933                         if (defined $file_name) {
 934                                 $title .= " - $file_name";
 935                                 if ($action eq "tree" && $file_name !~ m|/$|) {
 936                                         $title .= "/";
 937                                 }
 938                         }
 939                 }
 940         }
 941         my $content_type;
 942         # require explicit support from the UA if we are to send the page as
 943         # 'application/xhtml+xml', otherwise send it as plain old 'text/html'.
 944         # we have to do this because MSIE sometimes globs '*/*', pretending to
 945         # support xhtml+xml but choking when it gets what it asked for.
 946         if (defined $cgi->http('HTTP_ACCEPT') && $cgi->http('HTTP_ACCEPT') =~ m/(,|;|\s|^)application\/xhtml\+xml(,|;|\s|$)/ && $cgi->Accept('application/xhtml+xml') != 0) {
 947                 $content_type = 'application/xhtml+xml';
 948         } else {
 949                 $content_type = 'text/html';
 950         }
 951         print $cgi->header(-type=>$content_type, -charset => 'utf-8', -status=> $status, -expires => $expires);
 952         print <<EOF;
 953 <?xml version="1.0" encoding="utf-8"?>
 954 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
 955 <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en-US" lang="en-US">
 956 <!-- git web interface v$version, (C) 2005-2006, Kay Sievers <kay.sievers\@vrfy.org>, Christian Gierke -->
 957 <!-- git core binaries version $git_version -->
 958 <head>
 959 <meta http-equiv="content-type" content="$content_type; charset=utf-8"/>
 960 <meta name="robots" content="index, nofollow"/>
 961 <title>$title</title>
 962 <link rel="stylesheet" type="text/css" href="$stylesheet"/>
 963 EOF
 964         if (defined $project) {
 965                 printf('<link rel="alternate" title="%s log" '.
 966                        'href="%s" type="application/rss+xml"/>'."\n",
 967                        esc_param($project),
 968                        esc_param("$my_uri?p=$project;a=rss"));
 969         }
 970
 971         print "</head>\n" .
 972               "<body>\n" .
 973               "<div class=\"page_header\">\n" .
 974               "<a href=\"http://www.kernel.org/pub/software/scm/git/docs/\" title=\"git documentation\">" .
 975               "<img src=\"$logo\" width=\"72\" height=\"27\" alt=\"git\" style=\"float:right; border-width:0px;\"/>" .
 976               "</a>\n";
 977         print $cgi->a({-href => esc_param($home_link)}, "projects") . " / ";
 978         if (defined $project) {
 979                 print $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=summary")}, esc_html($project));
 980                 if (defined $action) {
 981                         print " / $action";
 982                 }
 983                 print "\n";
 984                 if (!defined $searchtext) {
 985                         $searchtext = "";
 986                 }
 987                 my $search_hash;
 988                 if (defined $hash_base) {
 989                         $search_hash = $hash_base;
 990                 } elsif (defined $hash) {
 991                         $search_hash = $hash;
 992                 } else {
 993                         $search_hash = "HEAD";
 994                 }
 995                 $cgi->param("a", "search");
 996                 $cgi->param("h", $search_hash);
 997                 print $cgi->startform(-method => "get", -action => $my_uri) .
 998                       "<div class=\"search\">\n" .
 999                       $cgi->hidden(-name => "p") . "\n" .
1000                       $cgi->hidden(-name => "a") . "\n" .
1001                       $cgi->hidden(-name => "h") . "\n" .
1002                       $cgi->textfield(-name => "s", -value => $searchtext) . "\n" .
1003                       "</div>" .
1004                       $cgi->end_form() . "\n";
1005         }
1006         print "</div>\n";
1007 }
1008
1009 sub git_footer_html {
1010         print "<div class=\"page_footer\">\n";
1011         if (defined $project) {
1012                 my $descr = git_get_project_description($project);
1013                 if (defined $descr) {
1014                         print "<div class=\"page_footer_text\">" . esc_html($descr) . "</div>\n";
1015                 }
1016                 print $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=rss"), -class => "rss_logo"}, "RSS") . "\n";
1017         } else {
1018                 print $cgi->a({-href => "$my_uri?" . esc_param("a=opml"), -class => "rss_logo"}, "OPML") . "\n";
1019         }
1020         print "</div>\n" .
1021               "</body>\n" .
1022               "</html>";
1023 }
1024
1025 sub die_error {
1026         my $status = shift || "403 Forbidden";
1027         my $error = shift || "Malformed query, file missing or permission denied";
1028
1029         git_header_html($status);
1030         print "<div class=\"page_body\">\n" .
1031               "<br/><br/>\n" .
1032               "$status - $error\n" .
1033               "<br/>\n" .
1034               "</div>\n";
1035         git_footer_html();
1036         exit;
1037 }
1038
1039 ## ----------------------------------------------------------------------
1040 ## functions printing or outputting HTML: navigation
1041
1042 sub git_print_page_nav {
1043         my ($current, $suppress, $head, $treehead, $treebase, $extra) = @_;
1044         $extra = '' if !defined $extra; # pager or formats
1045
1046         my @navs = qw(summary shortlog log commit commitdiff tree);
1047         if ($suppress) {
1048                 @navs = grep { $_ ne $suppress } @navs;
1049         }
1050
1051         my %arg = map { $_, ''} @navs;
1052         if (defined $head) {
1053                 for (qw(commit commitdiff)) {
1054                         $arg{$_} = ";h=$head";
1055                 }
1056                 if ($current =~ m/^(tree | log | shortlog | commit | commitdiff | search)$/x) {
1057                         for (qw(shortlog log)) {
1058                                 $arg{$_} = ";h=$head";
1059                         }
1060                 }
1061         }
1062         $arg{tree} .= ";h=$treehead" if defined $treehead;
1063         $arg{tree} .= ";hb=$treebase" if defined $treebase;
1064
1065         print "<div class=\"page_nav\">\n" .
1066                 (join " | ",
1067                  map { $_ eq $current
1068                                          ? $_
1069                                          : $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=$_$arg{$_}")}, "$_")
1070                                  }
1071                  @navs);
1072         print "<br/>\n$extra<br/>\n" .
1073               "</div>\n";
1074 }
1075
1076 sub format_paging_nav {
1077         my ($action, $hash, $head, $page, $nrevs) = @_;
1078         my $paging_nav;
1079
1080
1081         if ($hash ne $head || $page) {
1082                 $paging_nav .= $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=$action")}, "HEAD");
1083         } else {
1084                 $paging_nav .= "HEAD";
1085         }
1086
1087         if ($page > 0) {
1088                 $paging_nav .= " &sdot; " .
1089                         $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=$action;h=$hash;pg=" . ($page-1)),
1090                                  -accesskey => "p", -title => "Alt-p"}, "prev");
1091         } else {
1092                 $paging_nav .= " &sdot; prev";
1093         }
1094
1095         if ($nrevs >= (100 * ($page+1)-1)) {
1096                 $paging_nav .= " &sdot; " .
1097                         $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=$action;h=$hash;pg=" . ($page+1)),
1098                                  -accesskey => "n", -title => "Alt-n"}, "next");
1099         } else {
1100                 $paging_nav .= " &sdot; next";
1101         }
1102
1103         return $paging_nav;
1104 }
1105
1106 ## ......................................................................
1107 ## functions printing or outputting HTML: div
1108
1109 sub git_print_header_div {
1110         my ($action, $title, $hash, $hash_base) = @_;
1111         my $rest = '';
1112
1113         $rest .= ";h=$hash" if $hash;
1114         $rest .= ";hb=$hash_base" if $hash_base;
1115
1116         print "<div class=\"header\">\n" .
1117               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=$action$rest"),
1118                        -class => "title"}, $title ? $title : $action) . "\n" .
1119               "</div>\n";
1120 }
1121
1122 sub git_print_page_path {
1123         my $name = shift;
1124         my $type = shift;
1125
1126         if (!defined $name) {
1127                 print "<div class=\"page_path\"><b>/</b></div>\n";
1128         } elsif (defined $type && $type eq 'blob') {
1129                 print "<div class=\"page_path\"><b>" .
1130                         $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob_plain;f=$file_name")}, esc_html($name)) . "</b><br/></div>\n";
1131         } else {
1132                 print "<div class=\"page_path\"><b>" . esc_html($name) . "</b><br/></div>\n";
1133         }
1134 }
1135
1136 ## ......................................................................
1137 ## functions printing large fragments of HTML
1138
1139 sub git_difftree_body {
1140         my ($difftree, $parent) = @_;
1141
1142         print "<div class=\"list_head\">\n";
1143         if ($#{$difftree} > 10) {
1144                 print(($#{$difftree} + 1) . " files changed:\n");
1145         }
1146         print "</div>\n";
1147
1148         print "<table class=\"diff_tree\">\n";
1149         my $alternate = 0;
1150         foreach my $line (@{$difftree}) {
1151                 # ':100644 100644 03b218260e99b78c6df0ed378e59ed9205ccc96d 3b93d5e7cc7f7dd4ebed13a5cc1a4ad976fc94d8 M   ls-files.c'
1152                 # ':100644 100644 7f9281985086971d3877aca27704f2aaf9c448ce bc190ebc71bbd923f2b728e505408f5e54bd073a M   rev-tree.c'
1153                 if ($line !~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)([0-9]{0,3})\t(.*)$/) {
1154                         next;
1155                 }
1156                 my $from_mode = $1;
1157                 my $to_mode = $2;
1158                 my $from_id = $3;
1159                 my $to_id = $4;
1160                 my $status = $5;
1161                 my $similarity = $6; # score
1162                 my $file = validate_input(unquote($7));
1163
1164                 if ($alternate) {
1165                         print "<tr class=\"dark\">\n";
1166                 } else {
1167                         print "<tr class=\"light\">\n";
1168                 }
1169                 $alternate ^= 1;
1170
1171                 if ($status eq "A") { # created
1172                         my $mode_chng = "";
1173                         if (S_ISREG(oct $to_mode)) {
1174                                 $mode_chng = sprintf(" with mode: %04o", (oct $to_mode) & 0777);
1175                         }
1176                         print "<td>" .
1177                               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;h=$to_id;hb=$hash;f=$file"),
1178                                       -class => "list"}, esc_html($file)) .
1179                               "</td>\n" .
1180                               "<td><span class=\"file_status new\">[new " . file_type($to_mode) . "$mode_chng]</span></td>\n" .
1181                               "<td class=\"link\">" .
1182                               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;h=$to_id;hb=$hash;f=$file")}, "blob") .
1183                               "</td>\n";
1184
1185                 } elsif ($status eq "D") { # deleted
1186                         print "<td>" .
1187                               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;h=$from_id;hb=$parent;f=$file"),
1188                                        -class => "list"}, esc_html($file)) . "</td>\n" .
1189                               "<td><span class=\"file_status deleted\">[deleted " . file_type($from_mode). "]</span></td>\n" .
1190                               "<td class=\"link\">" .
1191                               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;h=$from_id;hb=$parent;f=$file")}, "blob") . " | " .
1192                               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=history;hb=$parent;f=$file")}, "history") .
1193                               "</td>\n"
1194
1195                 } elsif ($status eq "M" || $status eq "T") { # modified, or type changed
1196                         my $mode_chnge = "";
1197                         if ($from_mode != $to_mode) {
1198                                 $mode_chnge = " <span class=\"file_status mode_chnge\">[changed";
1199                                 if (((oct $from_mode) & S_IFMT) != ((oct $to_mode) & S_IFMT)) {
1200                                         $mode_chnge .= " from " . file_type($from_mode) . " to " . file_type($to_mode);
1201                                 }
1202                                 if (((oct $from_mode) & 0777) != ((oct $to_mode) & 0777)) {
1203                                         if (S_ISREG($from_mode) && S_ISREG($to_mode)) {
1204                                                 $mode_chnge .= sprintf(" mode: %04o->%04o", (oct $from_mode) & 0777, (oct $to_mode) & 0777);
1205                                         } elsif (S_ISREG($to_mode)) {
1206                                                 $mode_chnge .= sprintf(" mode: %04o", (oct $to_mode) & 0777);
1207                                         }
1208                                 }
1209                                 $mode_chnge .= "]</span>\n";
1210                         }
1211                         print "<td>";
1212                         if ($to_id ne $from_id) { # modified
1213                                 print $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blobdiff;h=$to_id;hp=$from_id;hb=$hash;f=$file"),
1214                                               -class => "list"}, esc_html($file));
1215                         } else { # mode changed
1216                                 print $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;h=$to_id;hb=$hash;f=$file"),
1217                                               -class => "list"}, esc_html($file));
1218                         }
1219                         print "</td>\n" .
1220                               "<td>$mode_chnge</td>\n" .
1221                               "<td class=\"link\">" .
1222                               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;h=$to_id;hb=$hash;f=$file")}, "blob");
1223                         if ($to_id ne $from_id) { # modified
1224                                 print " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blobdiff;h=$to_id;hp=$from_id;hb=$hash;f=$file")}, "diff");
1225                         }
1226                         print " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=history;hb=$hash;f=$file")}, "history") . "\n";
1227                         print "</td>\n";
1228
1229                 } elsif ($status eq "R") { # renamed
1230                         my ($from_file, $to_file) = split "\t", $file;
1231                         my $mode_chng = "";
1232                         if ($from_mode != $to_mode) {
1233                                 $mode_chng = sprintf(", mode: %04o", (oct $to_mode) & 0777);
1234                         }
1235                         print "<td>" .
1236                               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;h=$to_id;hb=$hash;f=$to_file"),
1237                                       -class => "list"}, esc_html($to_file)) . "</td>\n" .
1238                               "<td><span class=\"file_status moved\">[moved from " .
1239                               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;h=$from_id;hb=$parent;f=$from_file"),
1240                                       -class => "list"}, esc_html($from_file)) .
1241                               " with " . (int $similarity) . "% similarity$mode_chng]</span></td>\n" .
1242                               "<td class=\"link\">" .
1243                               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;h=$to_id;hb=$hash;f=$to_file")}, "blob");
1244                         if ($to_id ne $from_id) {
1245                                 print " | " .
1246                                       $cgi->a({-href => "$my_uri?" .
1247                                               esc_param("p=$project;a=blobdiff;h=$to_id;hp=$from_id;hb=$hash;f=$to_file;fp=$from_file")}, "diff");
1248                         }
1249                         print "</td>\n";
1250
1251                 } elsif ($status eq "C") { # copied
1252                         my ($from_file, $to_file) = split "\t", $file;
1253                         my $mode_chng = "";
1254                         if ($from_mode != $to_mode) {
1255                                 $mode_chng = sprintf(", mode: %04o", (oct $to_mode) & 0777);
1256                         }
1257                         print "<td>" .
1258                               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;h=$to_id;hb=$hash;f=$to_file"),
1259                                       -class => "list"}, esc_html($to_file)) . "</td>\n" .
1260                               "<td><span class=\"file_status copied\">[copied from " .
1261                               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;h=$from_id;hb=$parent;f=$from_file"),
1262                                       -class => "list"}, esc_html($from_file)) .
1263                               " with " . (int $similarity) . "% similarity$mode_chng]</span></td>\n" .
1264                               "<td class=\"link\">" .
1265                               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;h=$to_id;hb=$hash;f=$to_file")}, "blob");
1266                         if ($to_id ne $from_id) {
1267                                 print " | " .
1268                                       $cgi->a({-href => "$my_uri?" .
1269                                               esc_param("p=$project;a=blobdiff;h=$to_id;hp=$from_id;hb=$hash;f=$to_file;fp=$from_file")}, "diff");
1270                         }
1271                         print "</td>\n";
1272                 } # we should not encounter Unmerged (U) or Unknown (X) status
1273                 print "</tr>\n";
1274         }
1275         print "</table>\n";
1276 }
1277
1278 sub git_shortlog_body {
1279         # uses global variable $project
1280         my ($revlist, $from, $to, $refs, $extra) = @_;
1281         $from = 0 unless defined $from;
1282         $to = $#{$revlist} if (!defined $to || $#{$revlist} < $to);
1283
1284         print "<table class=\"shortlog\" cellspacing=\"0\">\n";
1285         my $alternate = 0;
1286         for (my $i = $from; $i <= $to; $i++) {
1287                 my $commit = $revlist->[$i];
1288                 #my $ref = defined $refs ? format_ref_marker($refs, $commit) : '';
1289                 my $ref = format_ref_marker($refs, $commit);
1290                 my %co = parse_commit($commit);
1291                 if ($alternate) {
1292                         print "<tr class=\"dark\">\n";
1293                 } else {
1294                         print "<tr class=\"light\">\n";
1295                 }
1296                 $alternate ^= 1;
1297                 # git_summary() used print "<td><i>$co{'age_string'}</i></td>\n" .
1298                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
1299                       "<td><i>" . esc_html(chop_str($co{'author_name'}, 10)) . "</i></td>\n" .
1300                       "<td>";
1301                 print format_subject_html($co{'title'}, $co{'title_short'}, "p=$project;a=commit;h=$commit", $ref);
1302                 print "</td>\n" .
1303                       "<td class=\"link\">" .
1304                       $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commit;h=$commit")}, "commit") . " | " .
1305                       $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commitdiff;h=$commit")}, "commitdiff") .
1306                       "</td>\n" .
1307                       "</tr>\n";
1308         }
1309         if (defined $extra) {
1310                 print "<tr>\n" .
1311                       "<td colspan=\"4\">$extra</td>\n" .
1312                       "</tr>\n";
1313         }
1314         print "</table>\n";
1315 }
1316
1317 sub git_history_body {
1318         # Warning: assumes constant type (blob or tree) during history
1319         my ($fd, $refs, $hash_base, $ftype, $extra) = @_;
1320
1321         print "<table class=\"history\" cellspacing=\"0\">\n";
1322         my $alternate = 0;
1323         while (my $line = <$fd>) {
1324                 if ($line !~ m/^([0-9a-fA-F]{40})/) {
1325                         next;
1326                 }
1327
1328                 my $commit = $1;
1329                 my %co = parse_commit($commit);
1330                 if (!%co) {
1331                         next;
1332                 }
1333
1334                 my $ref = format_ref_marker($refs, $commit);
1335
1336                 if ($alternate) {
1337                         print "<tr class=\"dark\">\n";
1338                 } else {
1339                         print "<tr class=\"light\">\n";
1340                 }
1341                 $alternate ^= 1;
1342                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
1343                       # shortlog uses      chop_str($co{'author_name'}, 10)
1344                       "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 3)) . "</i></td>\n" .
1345                       "<td>";
1346                 # originally git_history used chop_str($co{'title'}, 50)
1347                 print format_subject_html($co{'title'}, $co{'title_short'}, "p=$project;a=commit;h=$commit", $ref);
1348                 print "</td>\n" .
1349                       "<td class=\"link\">" .
1350                       $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commit;h=$commit")}, "commit") . " | " .
1351                       $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commitdiff;h=$commit")}, "commitdiff") . " | " .
1352                       $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=$ftype;hb=$commit;f=$file_name")}, $ftype);
1353
1354                 if ($ftype eq 'blob') {
1355                         my $blob_current = git_get_hash_by_path($hash_base, $file_name);
1356                         my $blob_parent  = git_get_hash_by_path($commit, $file_name);
1357                         if (defined $blob_current && defined $blob_parent &&
1358                                         $blob_current ne $blob_parent) {
1359                                 print " | " .
1360                                         $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blobdiff;h=$blob_current;hp=$blob_parent;hb=$commit;f=$file_name")},
1361                                                 "diff to current");
1362                         }
1363                 }
1364                 print "</td>\n" .
1365                       "</tr>\n";
1366         }
1367         if (defined $extra) {
1368                 print "<tr>\n" .
1369                       "<td colspan=\"4\">$extra</td>\n" .
1370                       "</tr>\n";
1371         }
1372         print "</table>\n";
1373 }
1374
1375 sub git_tags_body {
1376         # uses global variable $project
1377         my ($taglist, $from, $to, $extra) = @_;
1378         $from = 0 unless defined $from;
1379         $to = $#{$taglist} if (!defined $to || $#{$taglist} < $to);
1380
1381         print "<table class=\"tags\" cellspacing=\"0\">\n";
1382         my $alternate = 0;
1383         for (my $i = $from; $i <= $to; $i++) {
1384                 my $entry = $taglist->[$i];
1385                 my %tag = %$entry;
1386                 my $comment_lines = $tag{'comment'};
1387                 my $comment = shift @$comment_lines;
1388                 my $comment_short;
1389                 if (defined $comment) {
1390                         $comment_short = chop_str($comment, 30, 5);
1391                 }
1392                 if ($alternate) {
1393                         print "<tr class=\"dark\">\n";
1394                 } else {
1395                         print "<tr class=\"light\">\n";
1396                 }
1397                 $alternate ^= 1;
1398                 print "<td><i>$tag{'age'}</i></td>\n" .
1399                       "<td>" .
1400                       $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=$tag{'reftype'};h=$tag{'refid'}"),
1401                                -class => "list"}, "<b>" . esc_html($tag{'name'}) . "</b>") .
1402                       "</td>\n" .
1403                       "<td>";
1404                 if (defined $comment) {
1405                         print format_subject_html($comment, $comment_short, "p=$project;a=tag;h=$tag{'id'}");
1406                 }
1407                 print "</td>\n" .
1408                       "<td class=\"selflink\">";
1409                 if ($tag{'type'} eq "tag") {
1410                         print $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=tag;h=$tag{'id'}")}, "tag");
1411                 } else {
1412                         print "&nbsp;";
1413                 }
1414                 print "</td>\n" .
1415                       "<td class=\"link\">" . " | " .
1416                       $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=$tag{'reftype'};h=$tag{'refid'}")}, $tag{'reftype'});
1417                 if ($tag{'reftype'} eq "commit") {
1418                         print " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=shortlog;h=$tag{'name'}")}, "shortlog") .
1419                               " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=log;h=$tag{'refid'}")}, "log");
1420                 } elsif ($tag{'reftype'} eq "blob") {
1421                         print " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob_plain;h=$tag{'refid'}")}, "raw");
1422                 }
1423                 print "</td>\n" .
1424                       "</tr>";
1425         }
1426         if (defined $extra) {
1427                 print "<tr>\n" .
1428                       "<td colspan=\"5\">$extra</td>\n" .
1429                       "</tr>\n";
1430         }
1431         print "</table>\n";
1432 }
1433
1434 sub git_heads_body {
1435         # uses global variable $project
1436         my ($taglist, $head, $from, $to, $extra) = @_;
1437         $from = 0 unless defined $from;
1438         $to = $#{$taglist} if (!defined $to || $#{$taglist} < $to);
1439
1440         print "<table class=\"heads\" cellspacing=\"0\">\n";
1441         my $alternate = 0;
1442         for (my $i = $from; $i <= $to; $i++) {
1443                 my $entry = $taglist->[$i];
1444                 my %tag = %$entry;
1445                 my $curr = $tag{'id'} eq $head;
1446                 if ($alternate) {
1447                         print "<tr class=\"dark\">\n";
1448                 } else {
1449                         print "<tr class=\"light\">\n";
1450                 }
1451                 $alternate ^= 1;
1452                 print "<td><i>$tag{'age'}</i></td>\n" .
1453                       ($tag{'id'} eq $head ? "<td class=\"current_head\">" : "<td>") .
1454                       $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=shortlog;h=$tag{'name'}"),
1455                                -class => "list"}, "<b>" . esc_html($tag{'name'}) . "</b>") .
1456                       "</td>\n" .
1457                       "<td class=\"link\">" .
1458                       $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=shortlog;h=$tag{'name'}")}, "shortlog") . " | " .
1459                       $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=log;h=$tag{'name'}")}, "log") .
1460                       "</td>\n" .
1461                       "</tr>";
1462         }
1463         if (defined $extra) {
1464                 print "<tr>\n" .
1465                       "<td colspan=\"3\">$extra</td>\n" .
1466                       "</tr>\n";
1467         }
1468         print "</table>\n";
1469 }
1470
1471 ## ----------------------------------------------------------------------
1472 ## functions printing large fragments, format as one of arguments
1473
1474 sub git_diff_print {
1475         my $from = shift;
1476         my $from_name = shift;
1477         my $to = shift;
1478         my $to_name = shift;
1479         my $format = shift || "html";
1480
1481         my $from_tmp = "/dev/null";
1482         my $to_tmp = "/dev/null";
1483         my $pid = $$;
1484
1485         # create tmp from-file
1486         if (defined $from) {
1487                 $from_tmp = "$git_temp/gitweb_" . $$ . "_from";
1488                 open my $fd2, "> $from_tmp";
1489                 open my $fd, "-|", $GIT, "cat-file", "blob", $from;
1490                 my @file = <$fd>;
1491                 print $fd2 @file;
1492                 close $fd2;
1493                 close $fd;
1494         }
1495
1496         # create tmp to-file
1497         if (defined $to) {
1498                 $to_tmp = "$git_temp/gitweb_" . $$ . "_to";
1499                 open my $fd2, "> $to_tmp";
1500                 open my $fd, "-|", $GIT, "cat-file", "blob", $to;
1501                 my @file = <$fd>;
1502                 print $fd2 @file;
1503                 close $fd2;
1504                 close $fd;
1505         }
1506
1507         open my $fd, "-|", "/usr/bin/diff -u -p -L \'$from_name\' -L \'$to_name\' $from_tmp $to_tmp";
1508         if ($format eq "plain") {
1509                 undef $/;
1510                 print <$fd>;
1511                 $/ = "\n";
1512         } else {
1513                 while (my $line = <$fd>) {
1514                         chomp $line;
1515                         my $char = substr($line, 0, 1);
1516                         my $diff_class = "";
1517                         if ($char eq '+') {
1518                                 $diff_class = " add";
1519                         } elsif ($char eq "-") {
1520                                 $diff_class = " rem";
1521                         } elsif ($char eq "@") {
1522                                 $diff_class = " chunk_header";
1523                         } elsif ($char eq "\\") {
1524                                 # skip errors
1525                                 next;
1526                         }
1527                         $line = untabify($line);
1528                         print "<div class=\"diff$diff_class\">" . esc_html($line) . "</div>\n";
1529                 }
1530         }
1531         close $fd;
1532
1533         if (defined $from) {
1534                 unlink($from_tmp);
1535         }
1536         if (defined $to) {
1537                 unlink($to_tmp);
1538         }
1539 }
1540
1541
1542 ## ======================================================================
1543 ## ======================================================================
1544 ## actions
1545
1546 sub git_project_list {
1547         my $order = $cgi->param('o');
1548         if (defined $order && $order !~ m/project|descr|owner|age/) {
1549                 die_error(undef, "Unknown order parameter");
1550         }
1551
1552         my @list = git_get_projects_list();
1553         my @projects;
1554         if (!@list) {
1555                 die_error(undef, "No projects found");
1556         }
1557         foreach my $pr (@list) {
1558                 my $head = git_get_head_hash($pr->{'path'});
1559                 if (!defined $head) {
1560                         next;
1561                 }
1562                 $ENV{'GIT_DIR'} = "$projectroot/$pr->{'path'}";
1563                 my %co = parse_commit($head);
1564                 if (!%co) {
1565                         next;
1566                 }
1567                 $pr->{'commit'} = \%co;
1568                 if (!defined $pr->{'descr'}) {
1569                         my $descr = git_get_project_description($pr->{'path'}) || "";
1570                         $pr->{'descr'} = chop_str($descr, 25, 5);
1571                 }
1572                 if (!defined $pr->{'owner'}) {
1573                         $pr->{'owner'} = get_file_owner("$projectroot/$pr->{'path'}") || "";
1574                 }
1575                 push @projects, $pr;
1576         }
1577
1578         git_header_html();
1579         if (-f $home_text) {
1580                 print "<div class=\"index_include\">\n";
1581                 open (my $fd, $home_text);
1582                 print <$fd>;
1583                 close $fd;
1584                 print "</div>\n";
1585         }
1586         print "<table class=\"project_list\">\n" .
1587               "<tr>\n";
1588         $order ||= "project";
1589         if ($order eq "project") {
1590                 @projects = sort {$a->{'path'} cmp $b->{'path'}} @projects;
1591                 print "<th>Project</th>\n";
1592         } else {
1593                 print "<th>" .
1594                       $cgi->a({-href => "$my_uri?" . esc_param("o=project"),
1595                                -class => "header"}, "Project") .
1596                       "</th>\n";
1597         }
1598         if ($order eq "descr") {
1599                 @projects = sort {$a->{'descr'} cmp $b->{'descr'}} @projects;
1600                 print "<th>Description</th>\n";
1601         } else {
1602                 print "<th>" .
1603                       $cgi->a({-href => "$my_uri?" . esc_param("o=descr"),
1604                                -class => "header"}, "Description") .
1605                       "</th>\n";
1606         }
1607         if ($order eq "owner") {
1608                 @projects = sort {$a->{'owner'} cmp $b->{'owner'}} @projects;
1609                 print "<th>Owner</th>\n";
1610         } else {
1611                 print "<th>" .
1612                       $cgi->a({-href => "$my_uri?" . esc_param("o=owner"),
1613                                -class => "header"}, "Owner") .
1614                       "</th>\n";
1615         }
1616         if ($order eq "age") {
1617                 @projects = sort {$a->{'commit'}{'age'} <=> $b->{'commit'}{'age'}} @projects;
1618                 print "<th>Last Change</th>\n";
1619         } else {
1620                 print "<th>" .
1621                       $cgi->a({-href => "$my_uri?" . esc_param("o=age"),
1622                                -class => "header"}, "Last Change") .
1623                       "</th>\n";
1624         }
1625         print "<th></th>\n" .
1626               "</tr>\n";
1627         my $alternate = 0;
1628         foreach my $pr (@projects) {
1629                 if ($alternate) {
1630                         print "<tr class=\"dark\">\n";
1631                 } else {
1632                         print "<tr class=\"light\">\n";
1633                 }
1634                 $alternate ^= 1;
1635                 print "<td>" . $cgi->a({-href => "$my_uri?" . esc_param("p=$pr->{'path'};a=summary"),
1636                                         -class => "list"}, esc_html($pr->{'path'})) . "</td>\n" .
1637                       "<td>" . esc_html($pr->{'descr'}) . "</td>\n" .
1638                       "<td><i>" . chop_str($pr->{'owner'}, 15) . "</i></td>\n";
1639                 print "<td class=\"". age_class($pr->{'commit'}{'age'}) . "\">" .
1640                       $pr->{'commit'}{'age_string'} . "</td>\n" .
1641                       "<td class=\"link\">" .
1642                       $cgi->a({-href => "$my_uri?" . esc_param("p=$pr->{'path'};a=summary")}, "summary")   . " | " .
1643                       $cgi->a({-href => "$my_uri?" . esc_param("p=$pr->{'path'};a=shortlog")}, "shortlog") . " | " .
1644                       $cgi->a({-href => "$my_uri?" . esc_param("p=$pr->{'path'};a=log")}, "log") .
1645                       "</td>\n" .
1646                       "</tr>\n";
1647         }
1648         print "</table>\n";
1649         git_footer_html();
1650 }
1651
1652 sub git_summary {
1653         my $descr = git_get_project_description($project) || "none";
1654         my $head = git_get_head_hash($project);
1655         my %co = parse_commit($head);
1656         my %cd = parse_date($co{'committer_epoch'}, $co{'committer_tz'});
1657
1658         my $owner = git_get_project_owner($project);
1659
1660         my $refs = git_get_references();
1661         git_header_html();
1662         git_print_page_nav('summary','', $head);
1663
1664         print "<div class=\"title\">&nbsp;</div>\n";
1665         print "<table cellspacing=\"0\">\n" .
1666               "<tr><td>description</td><td>" . esc_html($descr) . "</td></tr>\n" .
1667               "<tr><td>owner</td><td>$owner</td></tr>\n" .
1668               "<tr><td>last change</td><td>$cd{'rfc2822'}</td></tr>\n" .
1669               "</table>\n";
1670
1671         open my $fd, "-|", $GIT, "rev-list", "--max-count=17", git_get_head_hash($project)
1672                 or die_error(undef, "Open git-rev-list failed");
1673         my @revlist = map { chomp; $_ } <$fd>;
1674         close $fd;
1675         git_print_header_div('shortlog');
1676         git_shortlog_body(\@revlist, 0, 15, $refs,
1677                           $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=shortlog")}, "..."));
1678
1679         my $taglist = git_get_refs_list("refs/tags");
1680         if (defined @$taglist) {
1681                 git_print_header_div('tags');
1682                 git_tags_body($taglist, 0, 15,
1683                               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=tags")}, "..."));
1684         }
1685
1686         my $headlist = git_get_refs_list("refs/heads");
1687         if (defined @$headlist) {
1688                 git_print_header_div('heads');
1689                 git_heads_body($headlist, $head, 0, 15,
1690                                $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=heads")}, "..."));
1691         }
1692
1693         git_footer_html();
1694 }
1695
1696 sub git_tag {
1697         my $head = git_get_head_hash($project);
1698         git_header_html();
1699         git_print_page_nav('','', $head,undef,$head);
1700         my %tag = parse_tag($hash);
1701         git_print_header_div('commit', esc_html($tag{'name'}), $hash);
1702         print "<div class=\"title_text\">\n" .
1703               "<table cellspacing=\"0\">\n" .
1704               "<tr>\n" .
1705               "<td>object</td>\n" .
1706               "<td>" . $cgi->a({-class => "list", -href => "$my_uri?" . esc_param("p=$project;a=$tag{'type'};h=$tag{'object'}")}, $tag{'object'}) . "</td>\n" .
1707               "<td class=\"link\">" . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=$tag{'type'};h=$tag{'object'}")}, $tag{'type'}) . "</td>\n" .
1708               "</tr>\n";
1709         if (defined($tag{'author'})) {
1710                 my %ad = parse_date($tag{'epoch'}, $tag{'tz'});
1711                 print "<tr><td>author</td><td>" . esc_html($tag{'author'}) . "</td></tr>\n";
1712                 print "<tr><td></td><td>" . $ad{'rfc2822'} . sprintf(" (%02d:%02d %s)", $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'}) . "</td></tr>\n";
1713         }
1714         print "</table>\n\n" .
1715               "</div>\n";
1716         print "<div class=\"page_body\">";
1717         my $comment = $tag{'comment'};
1718         foreach my $line (@$comment) {
1719                 print esc_html($line) . "<br/>\n";
1720         }
1721         print "</div>\n";
1722         git_footer_html();
1723 }
1724
1725 sub git_blame2 {
1726         my $fd;
1727         my $ftype;
1728         die_error(undef, "Permission denied") if (!git_get_project_config_bool ('blame'));
1729         die_error('404 Not Found', "File name not defined") if (!$file_name);
1730         $hash_base ||= git_get_head_hash($project);
1731         die_error(undef, "Couldn't find base commit") unless ($hash_base);
1732         my %co = parse_commit($hash_base)
1733                 or die_error(undef, "Reading commit failed");
1734         if (!defined $hash) {
1735                 $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
1736                         or die_error(undef, "Error looking up file");
1737         }
1738         $ftype = git_get_type($hash);
1739         if ($ftype !~ "blob") {
1740                 die_error("400 Bad Request", "Object is not a blob");
1741         }
1742         open ($fd, "-|", $GIT, "blame", '-l', $file_name, $hash_base)
1743                 or die_error(undef, "Open git-blame failed");
1744         git_header_html();
1745         my $formats_nav =
1746                 $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;h=$hash;hb=$hash_base;f=$file_name")}, "blob") .
1747                 " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blame;f=$file_name")}, "head");
1748         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
1749         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
1750         git_print_page_path($file_name, $ftype);
1751         my @rev_color = (qw(light2 dark2));
1752         my $num_colors = scalar(@rev_color);
1753         my $current_color = 0;
1754         my $last_rev;
1755         print "<div class=\"page_body\">\n";
1756         print "<table class=\"blame\">\n";
1757         print "<tr><th>Commit</th><th>Line</th><th>Data</th></tr>\n";
1758         while (<$fd>) {
1759                 /^([0-9a-fA-F]{40}).*?(\d+)\)\s{1}(\s*.*)/;
1760                 my $full_rev = $1;
1761                 my $rev = substr($full_rev, 0, 8);
1762                 my $lineno = $2;
1763                 my $data = $3;
1764
1765                 if (!defined $last_rev) {
1766                         $last_rev = $full_rev;
1767                 } elsif ($last_rev ne $full_rev) {
1768                         $last_rev = $full_rev;
1769                         $current_color = ++$current_color % $num_colors;
1770                 }
1771                 print "<tr class=\"$rev_color[$current_color]\">\n";
1772                 print "<td class=\"sha1\">" .
1773                         $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commit;h=$full_rev;f=$file_name")}, esc_html($rev)) . "</td>\n";
1774                 print "<td class=\"linenr\"><a id=\"l$lineno\" href=\"#l$lineno\" class=\"linenr\">" . esc_html($lineno) . "</a></td>\n";
1775                 print "<td class=\"pre\">" . esc_html($data) . "</td>\n";
1776                 print "</tr>\n";
1777         }
1778         print "</table>\n";
1779         print "</div>";
1780         close $fd or print "Reading blob failed\n";
1781         git_footer_html();
1782 }
1783
1784 sub git_blame {
1785         my $fd;
1786         die_error('403 Permission denied', "Permission denied") if (!git_get_project_config_bool ('blame'));
1787         die_error('404 Not Found', "File name not defined") if (!$file_name);
1788         $hash_base ||= git_get_head_hash($project);
1789         die_error(undef, "Couldn't find base commit") unless ($hash_base);
1790         my %co = parse_commit($hash_base)
1791                 or die_error(undef, "Reading commit failed");
1792         if (!defined $hash) {
1793                 $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
1794                         or die_error(undef, "Error lookup file");
1795         }
1796         open ($fd, "-|", $GIT, "annotate", '-l', '-t', '-r', $file_name, $hash_base)
1797                 or die_error(undef, "Open git-annotate failed");
1798         git_header_html();
1799         my $formats_nav =
1800                 $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;h=$hash;hb=$hash_base;f=$file_name")}, "blob") .
1801                 " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blame;f=$file_name")}, "head");
1802         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
1803         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
1804         git_print_page_path($file_name, 'blob');
1805         print "<div class=\"page_body\">\n";
1806         print <<HTML;
1807 <table class="blame">
1808   <tr>
1809     <th>Commit</th>
1810     <th>Age</th>
1811     <th>Author</th>
1812     <th>Line</th>
1813     <th>Data</th>
1814   </tr>
1815 HTML
1816         my @line_class = (qw(light dark));
1817         my $line_class_len = scalar (@line_class);
1818         my $line_class_num = $#line_class;
1819         while (my $line = <$fd>) {
1820                 my $long_rev;
1821                 my $short_rev;
1822                 my $author;
1823                 my $time;
1824                 my $lineno;
1825                 my $data;
1826                 my $age;
1827                 my $age_str;
1828                 my $age_class;
1829
1830                 chomp $line;
1831                 $line_class_num = ($line_class_num + 1) % $line_class_len;
1832
1833                 if ($line =~ m/^([0-9a-fA-F]{40})\t\(\s*([^\t]+)\t(\d+) \+\d\d\d\d\t(\d+)\)(.*)$/) {
1834                         $long_rev = $1;
1835                         $author   = $2;
1836                         $time     = $3;
1837                         $lineno   = $4;
1838                         $data     = $5;
1839                 } else {
1840                         print qq(  <tr><td colspan="5" class="error">Unable to parse: $line</td></tr>\n);
1841                         next;
1842                 }
1843                 $short_rev  = substr ($long_rev, 0, 8);
1844                 $age        = time () - $time;
1845                 $age_str    = age_string ($age);
1846                 $age_str    =~ s/ /&nbsp;/g;
1847                 $age_class  = age_class($age);
1848                 $author     = esc_html ($author);
1849                 $author     =~ s/ /&nbsp;/g;
1850
1851                 $data = untabify($data);
1852                 $data = esc_html ($data);
1853
1854                 print <<HTML;
1855   <tr class="$line_class[$line_class_num]">
1856     <td class="sha1"><a href="$my_uri?${\esc_param ("p=$project;a=commit;h=$long_rev")}" class="text">$short_rev..</a></td>
1857     <td class="$age_class">$age_str</td>
1858     <td>$author</td>
1859     <td class="linenr"><a id="$lineno" href="#$lineno" class="linenr">$lineno</a></td>
1860     <td class="pre">$data</td>
1861   </tr>
1862 HTML
1863         } # while (my $line = <$fd>)
1864         print "</table>\n\n";
1865         close $fd or print "Reading blob failed.\n";
1866         print "</div>";
1867         git_footer_html();
1868 }
1869
1870 sub git_tags {
1871         my $head = git_get_head_hash($project);
1872         git_header_html();
1873         git_print_page_nav('','', $head,undef,$head);
1874         git_print_header_div('summary', $project);
1875
1876         my $taglist = git_get_refs_list("refs/tags");
1877         if (defined @$taglist) {
1878                 git_tags_body($taglist);
1879         }
1880         git_footer_html();
1881 }
1882
1883 sub git_heads {
1884         my $head = git_get_head_hash($project);
1885         git_header_html();
1886         git_print_page_nav('','', $head,undef,$head);
1887         git_print_header_div('summary', $project);
1888
1889         my $taglist = git_get_refs_list("refs/heads");
1890         if (defined @$taglist) {
1891                 git_heads_body($taglist, $head);
1892         }
1893         git_footer_html();
1894 }
1895
1896 sub git_blob_plain {
1897         if (!defined $hash) {
1898                 if (defined $file_name) {
1899                         my $base = $hash_base || git_get_head_hash($project);
1900                         $hash = git_get_hash_by_path($base, $file_name, "blob")
1901                                 or die_error(undef, "Error lookup file");
1902                 } else {
1903                         die_error(undef, "No file name defined");
1904                 }
1905         }
1906         my $type = shift;
1907         open my $fd, "-|", $GIT, "cat-file", "blob", $hash
1908                 or die_error(undef, "Couldn't cat $file_name, $hash");
1909
1910         $type ||= blob_mimetype($fd, $file_name);
1911
1912         # save as filename, even when no $file_name is given
1913         my $save_as = "$hash";
1914         if (defined $file_name) {
1915                 $save_as = $file_name;
1916         } elsif ($type =~ m/^text\//) {
1917                 $save_as .= '.txt';
1918         }
1919
1920         print $cgi->header(-type => "$type", '-content-disposition' => "inline; filename=\"$save_as\"");
1921         undef $/;
1922         binmode STDOUT, ':raw';
1923         print <$fd>;
1924         binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
1925         $/ = "\n";
1926         close $fd;
1927 }
1928
1929 sub git_blob {
1930         if (!defined $hash) {
1931                 if (defined $file_name) {
1932                         my $base = $hash_base || git_get_head_hash($project);
1933                         $hash = git_get_hash_by_path($base, $file_name, "blob")
1934                                 or die_error(undef, "Error lookup file");
1935                 } else {
1936                         die_error(undef, "No file name defined");
1937                 }
1938         }
1939         my $have_blame = git_get_project_config_bool ('blame');
1940         open my $fd, "-|", $GIT, "cat-file", "blob", $hash
1941                 or die_error(undef, "Couldn't cat $file_name, $hash");
1942         my $mimetype = blob_mimetype($fd, $file_name);
1943         if ($mimetype !~ m/^text\//) {
1944                 close $fd;
1945                 return git_blob_plain($mimetype);
1946         }
1947         git_header_html();
1948         my $formats_nav = '';
1949         if (defined $hash_base && (my %co = parse_commit($hash_base))) {
1950                 if (defined $file_name) {
1951                         if ($have_blame) {
1952                                 $formats_nav .= $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blame;h=$hash;hb=$hash_base;f=$file_name")}, "blame") . " | ";
1953                         }
1954                         $formats_nav .=
1955                                 $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob_plain;h=$hash;f=$file_name")}, "plain") .
1956                                 " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;hb=HEAD;f=$file_name")}, "head");
1957                 } else {
1958                         $formats_nav .= $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob_plain;h=$hash")}, "plain");
1959                 }
1960                 git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
1961                 git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
1962         } else {
1963                 print "<div class=\"page_nav\">\n" .
1964                       "<br/><br/></div>\n" .
1965                       "<div class=\"title\">$hash</div>\n";
1966         }
1967         git_print_page_path($file_name, "blob");
1968         print "<div class=\"page_body\">\n";
1969         my $nr;
1970         while (my $line = <$fd>) {
1971                 chomp $line;
1972                 $nr++;
1973                 $line = untabify($line);
1974                 printf "<div class=\"pre\"><a id=\"l%i\" href=\"#l%i\" class=\"linenr\">%4i</a> %s</div>\n", $nr, $nr, $nr, esc_html($line);
1975         }
1976         close $fd or print "Reading blob failed.\n";
1977         print "</div>";
1978         git_footer_html();
1979 }
1980
1981 sub git_tree {
1982         if (!defined $hash) {
1983                 $hash = git_get_head_hash($project);
1984                 if (defined $file_name) {
1985                         my $base = $hash_base || $hash;
1986                         $hash = git_get_hash_by_path($base, $file_name, "tree");
1987                 }
1988                 if (!defined $hash_base) {
1989                         $hash_base = $hash;
1990                 }
1991         }
1992         $/ = "\0";
1993         open my $fd, "-|", $GIT, "ls-tree", '-z', $hash
1994                 or die_error(undef, "Open git-ls-tree failed");
1995         my @entries = map { chomp; $_ } <$fd>;
1996         close $fd or die_error(undef, "Reading tree failed");
1997         $/ = "\n";
1998
1999         my $refs = git_get_references();
2000         my $ref = format_ref_marker($refs, $hash_base);
2001         git_header_html();
2002         my $base_key = "";
2003         my $base = "";
2004         my $have_blame = git_get_project_config_bool ('blame');
2005         if (defined $hash_base && (my %co = parse_commit($hash_base))) {
2006                 $base_key = ";hb=$hash_base";
2007                 git_print_page_nav('tree','', $hash_base);
2008                 git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash_base);
2009         } else {
2010                 print "<div class=\"page_nav\">\n";
2011                 print "<br/><br/></div>\n";
2012                 print "<div class=\"title\">$hash</div>\n";
2013         }
2014         if (defined $file_name) {
2015                 $base = esc_html("$file_name/");
2016         }
2017         git_print_page_path($file_name, 'tree');
2018         print "<div class=\"page_body\">\n";
2019         print "<table cellspacing=\"0\">\n";
2020         my $alternate = 0;
2021         foreach my $line (@entries) {
2022                 #'100644        blob    0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa        panic.c'
2023                 $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t(.+)$/;
2024                 my $t_mode = $1;
2025                 my $t_type = $2;
2026                 my $t_hash = $3;
2027                 my $t_name = validate_input($4);
2028                 if ($alternate) {
2029                         print "<tr class=\"dark\">\n";
2030                 } else {
2031                         print "<tr class=\"light\">\n";
2032                 }
2033                 $alternate ^= 1;
2034                 print "<td class=\"mode\">" . mode_str($t_mode) . "</td>\n";
2035                 if ($t_type eq "blob") {
2036                         print "<td class=\"list\">" .
2037                               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;h=$t_hash$base_key;f=$base$t_name"), -class => "list"}, esc_html($t_name)) .
2038                               "</td>\n" .
2039                               "<td class=\"link\">" .
2040                               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;h=$t_hash$base_key;f=$base$t_name")}, "blob");
2041                         if ($have_blame) {
2042                                 print " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blame;h=$t_hash$base_key;f=$base$t_name")}, "blame");
2043                         }
2044                         print " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=history;h=$t_hash;hb=$hash_base;f=$base$t_name")}, "history") .
2045                               " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob_plain;h=$t_hash;f=$base$t_name")}, "raw") .
2046                               "</td>\n";
2047                 } elsif ($t_type eq "tree") {
2048                         print "<td class=\"list\">" .
2049                               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=tree;h=$t_hash$base_key;f=$base$t_name")}, esc_html($t_name)) .
2050                               "</td>\n" .
2051                               "<td class=\"link\">" .
2052                               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=tree;h=$t_hash$base_key;f=$base$t_name")}, "tree") .
2053                               " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=history;hb=$hash_base;f=$base$t_name")}, "history") .
2054                               "</td>\n";
2055                 }
2056                 print "</tr>\n";
2057         }
2058         print "</table>\n" .
2059               "</div>";
2060         git_footer_html();
2061 }
2062
2063 sub git_log {
2064         my $head = git_get_head_hash($project);
2065         if (!defined $hash) {
2066                 $hash = $head;
2067         }
2068         if (!defined $page) {
2069                 $page = 0;
2070         }
2071         my $refs = git_get_references();
2072
2073         my $limit = sprintf("--max-count=%i", (100 * ($page+1)));
2074         open my $fd, "-|", $GIT, "rev-list", $limit, $hash
2075                 or die_error(undef, "Open git-rev-list failed");
2076         my @revlist = map { chomp; $_ } <$fd>;
2077         close $fd;
2078
2079         my $paging_nav = format_paging_nav('log', $hash, $head, $page, $#revlist);
2080
2081         git_header_html();
2082         git_print_page_nav('log','', $hash,undef,undef, $paging_nav);
2083
2084         if (!@revlist) {
2085                 my %co = parse_commit($hash);
2086
2087                 git_print_header_div('summary', $project);
2088                 print "<div class=\"page_body\"> Last change $co{'age_string'}.<br/><br/></div>\n";
2089         }
2090         for (my $i = ($page * 100); $i <= $#revlist; $i++) {
2091                 my $commit = $revlist[$i];
2092                 my $ref = format_ref_marker($refs, $commit);
2093                 my %co = parse_commit($commit);
2094                 next if !%co;
2095                 my %ad = parse_date($co{'author_epoch'});
2096                 git_print_header_div('commit',
2097                                "<span class=\"age\">$co{'age_string'}</span>" .
2098                                esc_html($co{'title'}) . $ref,
2099                                $commit);
2100                 print "<div class=\"title_text\">\n" .
2101                       "<div class=\"log_link\">\n" .
2102                       $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commit;h=$commit")}, "commit") .
2103                       " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commitdiff;h=$commit")}, "commitdiff") .
2104                       "<br/>\n" .
2105                       "</div>\n" .
2106                       "<i>" . esc_html($co{'author_name'}) .  " [$ad{'rfc2822'}]</i><br/>\n" .
2107                       "</div>\n" .
2108                       "<div class=\"log_body\">\n";
2109                 my $comment = $co{'comment'};
2110                 my $empty = 0;
2111                 foreach my $line (@$comment) {
2112                         if ($line =~ m/^ *(signed[ \-]off[ \-]by[ :]|acked[ \-]by[ :]|cc[ :])/i) {
2113                                 next;
2114                         }
2115                         if ($line eq "") {
2116                                 if ($empty) {
2117                                         next;
2118                                 }
2119                                 $empty = 1;
2120                         } else {
2121                                 $empty = 0;
2122                         }
2123                         print format_log_line_html($line) . "<br/>\n";
2124                 }
2125                 if (!$empty) {
2126                         print "<br/>\n";
2127                 }
2128                 print "</div>\n";
2129         }
2130         git_footer_html();
2131 }
2132
2133 sub git_commit {
2134         my %co = parse_commit($hash);
2135         if (!%co) {
2136                 die_error(undef, "Unknown commit object");
2137         }
2138         my %ad = parse_date($co{'author_epoch'}, $co{'author_tz'});
2139         my %cd = parse_date($co{'committer_epoch'}, $co{'committer_tz'});
2140
2141         my $parent = $co{'parent'};
2142         if (!defined $parent) {
2143                 $parent = "--root";
2144         }
2145         open my $fd, "-|", $GIT, "diff-tree", '-r', '-M', $parent, $hash
2146                 or die_error(undef, "Open git-diff-tree failed");
2147         my @difftree = map { chomp; $_ } <$fd>;
2148         close $fd or die_error(undef, "Reading git-diff-tree failed");
2149
2150         # non-textual hash id's can be cached
2151         my $expires;
2152         if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
2153                 $expires = "+1d";
2154         }
2155         my $refs = git_get_references();
2156         my $ref = format_ref_marker($refs, $co{'id'});
2157         my $formats_nav = '';
2158         if (defined $file_name && defined $co{'parent'}) {
2159                 my $parent = $co{'parent'};
2160                 $formats_nav .= $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blame;hb=$parent;f=$file_name")}, "blame");
2161         }
2162         git_header_html(undef, $expires);
2163         git_print_page_nav('commit', defined $co{'parent'} ? '' : 'commitdiff',
2164                      $hash, $co{'tree'}, $hash,
2165                      $formats_nav);
2166
2167         if (defined $co{'parent'}) {
2168                 git_print_header_div('commitdiff', esc_html($co{'title'}) . $ref, $hash);
2169         } else {
2170                 git_print_header_div('tree', esc_html($co{'title'}) . $ref, $co{'tree'}, $hash);
2171         }
2172         print "<div class=\"title_text\">\n" .
2173               "<table cellspacing=\"0\">\n";
2174         print "<tr><td>author</td><td>" . esc_html($co{'author'}) . "</td></tr>\n".
2175               "<tr>" .
2176               "<td></td><td> $ad{'rfc2822'}";
2177         if ($ad{'hour_local'} < 6) {
2178                 printf(" (<span class=\"atnight\">%02d:%02d</span> %s)", $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
2179         } else {
2180                 printf(" (%02d:%02d %s)", $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
2181         }
2182         print "</td>" .
2183               "</tr>\n";
2184         print "<tr><td>committer</td><td>" . esc_html($co{'committer'}) . "</td></tr>\n";
2185         print "<tr><td></td><td> $cd{'rfc2822'}" . sprintf(" (%02d:%02d %s)", $cd{'hour_local'}, $cd{'minute_local'}, $cd{'tz_local'}) . "</td></tr>\n";
2186         print "<tr><td>commit</td><td class=\"sha1\">$co{'id'}</td></tr>\n";
2187         print "<tr>" .
2188               "<td>tree</td>" .
2189               "<td class=\"sha1\">" .
2190               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=tree;h=$co{'tree'};hb=$hash"), class => "list"}, $co{'tree'}) .
2191               "</td>" .
2192               "<td class=\"link\">" . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=tree;h=$co{'tree'};hb=$hash")}, "tree") .
2193               "</td>" .
2194               "</tr>\n";
2195         my $parents = $co{'parents'};
2196         foreach my $par (@$parents) {
2197                 print "<tr>" .
2198                       "<td>parent</td>" .
2199                       "<td class=\"sha1\">" . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commit;h=$par"), class => "list"}, $par) . "</td>" .
2200                       "<td class=\"link\">" .
2201                       $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commit;h=$par")}, "commit") .
2202                       " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commitdiff;h=$hash;hp=$par")}, "commitdiff") .
2203                       "</td>" .
2204                       "</tr>\n";
2205         }
2206         print "</table>".
2207               "</div>\n";
2208         print "<div class=\"page_body\">\n";
2209         my $comment = $co{'comment'};
2210         my $empty = 0;
2211         my $signed = 0;
2212         foreach my $line (@$comment) {
2213                 # print only one empty line
2214                 if ($line eq "") {
2215                         if ($empty || $signed) {
2216                                 next;
2217                         }
2218                         $empty = 1;
2219                 } else {
2220                         $empty = 0;
2221                 }
2222                 if ($line =~ m/^ *(signed[ \-]off[ \-]by[ :]|acked[ \-]by[ :]|cc[ :])/i) {
2223                         $signed = 1;
2224                         print "<span class=\"signoff\">" . esc_html($line) . "</span><br/>\n";
2225                 } else {
2226                         $signed = 0;
2227                         print format_log_line_html($line) . "<br/>\n";
2228                 }
2229         }
2230         print "</div>\n";
2231
2232         git_difftree_body(\@difftree, $parent);
2233
2234         git_footer_html();
2235 }
2236
2237 sub git_blobdiff {
2238         mkdir($git_temp, 0700);
2239         git_header_html();
2240         if (defined $hash_base && (my %co = parse_commit($hash_base))) {
2241                 my $formats_nav =
2242                         $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blobdiff_plain;h=$hash;hp=$hash_parent")}, "plain");
2243                 git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
2244                 git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
2245         } else {
2246                 print "<div class=\"page_nav\">\n" .
2247                       "<br/><br/></div>\n" .
2248                       "<div class=\"title\">$hash vs $hash_parent</div>\n";
2249         }
2250         git_print_page_path($file_name, "blob");
2251         print "<div class=\"page_body\">\n" .
2252               "<div class=\"diff_info\">blob:" .
2253               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;h=$hash_parent;hb=$hash_base;f=$file_name")}, $hash_parent) .
2254               " -> blob:" .
2255               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;h=$hash;hb=$hash_base;f=$file_name")}, $hash) .
2256               "</div>\n";
2257         git_diff_print($hash_parent, $file_name || $hash_parent, $hash, $file_name || $hash);
2258         print "</div>";
2259         git_footer_html();
2260 }
2261
2262 sub git_blobdiff_plain {
2263         mkdir($git_temp, 0700);
2264         print $cgi->header(-type => "text/plain", -charset => 'utf-8');
2265         git_diff_print($hash_parent, $file_name || $hash_parent, $hash, $file_name || $hash, "plain");
2266 }
2267
2268 sub git_commitdiff {
2269         mkdir($git_temp, 0700);
2270         my %co = parse_commit($hash);
2271         if (!%co) {
2272                 die_error(undef, "Unknown commit object");
2273         }
2274         if (!defined $hash_parent) {
2275                 $hash_parent = $co{'parent'} || '--root';
2276         }
2277         open my $fd, "-|", $GIT, "diff-tree", '-r', $hash_parent, $hash
2278                 or die_error(undef, "Open git-diff-tree failed");
2279         my @difftree = map { chomp; $_ } <$fd>;
2280         close $fd or die_error(undef, "Reading git-diff-tree failed");
2281
2282         # non-textual hash id's can be cached
2283         my $expires;
2284         if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
2285                 $expires = "+1d";
2286         }
2287         my $refs = git_get_references();
2288         my $ref = format_ref_marker($refs, $co{'id'});
2289         my $formats_nav =
2290                 $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commitdiff_plain;h=$hash;hp=$hash_parent")}, "plain");
2291         git_header_html(undef, $expires);
2292         git_print_page_nav('commitdiff','', $hash,$co{'tree'},$hash, $formats_nav);
2293         git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash);
2294         print "<div class=\"page_body\">\n";
2295         my $comment = $co{'comment'};
2296         my $empty = 0;
2297         my $signed = 0;
2298         my @log = @$comment;
2299         # remove first and empty lines after that
2300         shift @log;
2301         while (defined $log[0] && $log[0] eq "") {
2302                 shift @log;
2303         }
2304         foreach my $line (@log) {
2305                 if ($line =~ m/^ *(signed[ \-]off[ \-]by[ :]|acked[ \-]by[ :]|cc[ :])/i) {
2306                         next;
2307                 }
2308                 if ($line eq "") {
2309                         if ($empty) {
2310                                 next;
2311                         }
2312                         $empty = 1;
2313                 } else {
2314                         $empty = 0;
2315                 }
2316                 print format_log_line_html($line) . "<br/>\n";
2317         }
2318         print "<br/>\n";
2319         foreach my $line (@difftree) {
2320                 # ':100644 100644 03b218260e99b78c6df0ed378e59ed9205ccc96d 3b93d5e7cc7f7dd4ebed13a5cc1a4ad976fc94d8 M      ls-files.c'
2321                 # ':100644 100644 7f9281985086971d3877aca27704f2aaf9c448ce bc190ebc71bbd923f2b728e505408f5e54bd073a M      rev-tree.c'
2322                 if ($line !~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)\t(.*)$/) {
2323                         next;
2324                 }
2325                 my $from_mode = $1;
2326                 my $to_mode = $2;
2327                 my $from_id = $3;
2328                 my $to_id = $4;
2329                 my $status = $5;
2330                 my $file = validate_input(unquote($6));
2331                 if ($status eq "A") {
2332                         print "<div class=\"diff_info\">" . file_type($to_mode) . ":" .
2333                               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;h=$to_id;hb=$hash;f=$file")}, $to_id) . "(new)" .
2334                               "</div>\n";
2335                         git_diff_print(undef, "/dev/null", $to_id, "b/$file");
2336                 } elsif ($status eq "D") {
2337                         print "<div class=\"diff_info\">" . file_type($from_mode) . ":" .
2338                               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;h=$from_id;hb=$hash_parent;f=$file")}, $from_id) . "(deleted)" .
2339                               "</div>\n";
2340                         git_diff_print($from_id, "a/$file", undef, "/dev/null");
2341                 } elsif ($status eq "M") {
2342                         if ($from_id ne $to_id) {
2343                                 print "<div class=\"diff_info\">" .
2344                                       file_type($from_mode) . ":" .
2345                                       $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;h=$from_id;hb=$hash_parent;f=$file")}, $from_id) .
2346                                       " -> " .
2347                                       file_type($to_mode) . ":" .
2348                                       $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;h=$to_id;hb=$hash;f=$file")}, $to_id);
2349                                 print "</div>\n";
2350                                 git_diff_print($from_id, "a/$file",  $to_id, "b/$file");
2351                         }
2352                 }
2353         }
2354         print "<br/>\n" .
2355               "</div>";
2356         git_footer_html();
2357 }
2358
2359 sub git_commitdiff_plain {
2360         mkdir($git_temp, 0700);
2361         my %co = parse_commit($hash);
2362         if (!%co) {
2363                 die_error(undef, "Unknown commit object");
2364         }
2365         if (!defined $hash_parent) {
2366                 $hash_parent = $co{'parent'} || '--root';
2367         }
2368         open my $fd, "-|", $GIT, "diff-tree", '-r', $hash_parent, $hash
2369                 or die_error(undef, "Open git-diff-tree failed");
2370         my @difftree = map { chomp; $_ } <$fd>;
2371         close $fd or die_error(undef, "Reading diff-tree failed");
2372
2373         # try to figure out the next tag after this commit
2374         my $tagname;
2375         my $refs = git_get_references("tags");
2376         open $fd, "-|", $GIT, "rev-list", "HEAD";
2377         my @commits = map { chomp; $_ } <$fd>;
2378         close $fd;
2379         foreach my $commit (@commits) {
2380                 if (defined $refs->{$commit}) {
2381                         $tagname = $refs->{$commit}
2382                 }
2383                 if ($commit eq $hash) {
2384                         last;
2385                 }
2386         }
2387
2388         print $cgi->header(-type => "text/plain", -charset => 'utf-8', '-content-disposition' => "inline; filename=\"git-$hash.patch\"");
2389         my %ad = parse_date($co{'author_epoch'}, $co{'author_tz'});
2390         my $comment = $co{'comment'};
2391         print "From: $co{'author'}\n" .
2392               "Date: $ad{'rfc2822'} ($ad{'tz_local'})\n".
2393               "Subject: $co{'title'}\n";
2394         if (defined $tagname) {
2395                 print "X-Git-Tag: $tagname\n";
2396         }
2397         print "X-Git-Url: $my_url?p=$project;a=commitdiff;h=$hash\n" .
2398               "\n";
2399
2400         foreach my $line (@$comment) {;
2401                 print "$line\n";
2402         }
2403         print "---\n\n";
2404
2405         foreach my $line (@difftree) {
2406                 if ($line !~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)\t(.*)$/) {
2407                         next;
2408                 }
2409                 my $from_id = $3;
2410                 my $to_id = $4;
2411                 my $status = $5;
2412                 my $file = $6;
2413                 if ($status eq "A") {
2414                         git_diff_print(undef, "/dev/null", $to_id, "b/$file", "plain");
2415                 } elsif ($status eq "D") {
2416                         git_diff_print($from_id, "a/$file", undef, "/dev/null", "plain");
2417                 } elsif ($status eq "M") {
2418                         git_diff_print($from_id, "a/$file",  $to_id, "b/$file", "plain");
2419                 }
2420         }
2421 }
2422
2423 sub git_history {
2424         if (!defined $hash_base) {
2425                 $hash_base = git_get_head_hash($project);
2426         }
2427         my $ftype;
2428         my %co = parse_commit($hash_base);
2429         if (!%co) {
2430                 die_error(undef, "Unknown commit object");
2431         }
2432         my $refs = git_get_references();
2433         git_header_html();
2434         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base);
2435         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
2436         if (!defined $hash && defined $file_name) {
2437                 $hash = git_get_hash_by_path($hash_base, $file_name);
2438         }
2439         if (defined $hash) {
2440                 $ftype = git_get_type($hash);
2441         }
2442         git_print_page_path($file_name, $ftype);
2443
2444         open my $fd, "-|",
2445                 $GIT, "rev-list", "--full-history", $hash_base, "--", $file_name;
2446         git_history_body($fd, $refs, $hash_base, $ftype);
2447
2448         close $fd;
2449         git_footer_html();
2450 }
2451
2452 sub git_search {
2453         if (!defined $searchtext) {
2454                 die_error(undef, "Text field empty");
2455         }
2456         if (!defined $hash) {
2457                 $hash = git_get_head_hash($project);
2458         }
2459         my %co = parse_commit($hash);
2460         if (!%co) {
2461                 die_error(undef, "Unknown commit object");
2462         }
2463         # pickaxe may take all resources of your box and run for several minutes
2464         # with every query - so decide by yourself how public you make this feature :)
2465         my $commit_search = 1;
2466         my $author_search = 0;
2467         my $committer_search = 0;
2468         my $pickaxe_search = 0;
2469         if ($searchtext =~ s/^author\\://i) {
2470                 $author_search = 1;
2471         } elsif ($searchtext =~ s/^committer\\://i) {
2472                 $committer_search = 1;
2473         } elsif ($searchtext =~ s/^pickaxe\\://i) {
2474                 $commit_search = 0;
2475                 $pickaxe_search = 1;
2476         }
2477         git_header_html();
2478         git_print_page_nav('','', $hash,$co{'tree'},$hash);
2479         git_print_header_div('commit', esc_html($co{'title'}), $hash);
2480
2481         print "<table cellspacing=\"0\">\n";
2482         my $alternate = 0;
2483         if ($commit_search) {
2484                 $/ = "\0";
2485                 open my $fd, "-|", $GIT, "rev-list", "--header", "--parents", $hash or next;
2486                 while (my $commit_text = <$fd>) {
2487                         if (!grep m/$searchtext/i, $commit_text) {
2488                                 next;
2489                         }
2490                         if ($author_search && !grep m/\nauthor .*$searchtext/i, $commit_text) {
2491                                 next;
2492                         }
2493                         if ($committer_search && !grep m/\ncommitter .*$searchtext/i, $commit_text) {
2494                                 next;
2495                         }
2496                         my @commit_lines = split "\n", $commit_text;
2497                         my %co = parse_commit(undef, \@commit_lines);
2498                         if (!%co) {
2499                                 next;
2500                         }
2501                         if ($alternate) {
2502                                 print "<tr class=\"dark\">\n";
2503                         } else {
2504                                 print "<tr class=\"light\">\n";
2505                         }
2506                         $alternate ^= 1;
2507                         print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
2508                               "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 5)) . "</i></td>\n" .
2509                               "<td>" .
2510                               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commit;h=$co{'id'}"), -class => "list"}, "<b>" . esc_html(chop_str($co{'title'}, 50)) . "</b><br/>");
2511                         my $comment = $co{'comment'};
2512                         foreach my $line (@$comment) {
2513                                 if ($line =~ m/^(.*)($searchtext)(.*)$/i) {
2514                                         my $lead = esc_html($1) || "";
2515                                         $lead = chop_str($lead, 30, 10);
2516                                         my $match = esc_html($2) || "";
2517                                         my $trail = esc_html($3) || "";
2518                                         $trail = chop_str($trail, 30, 10);
2519                                         my $text = "$lead<span class=\"match\">$match</span>$trail";
2520                                         print chop_str($text, 80, 5) . "<br/>\n";
2521                                 }
2522                         }
2523                         print "</td>\n" .
2524                               "<td class=\"link\">" .
2525                               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commit;h=$co{'id'}")}, "commit") .
2526                               " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=tree;h=$co{'tree'};hb=$co{'id'}")}, "tree");
2527                         print "</td>\n" .
2528                               "</tr>\n";
2529                 }
2530                 close $fd;
2531         }
2532
2533         if ($pickaxe_search) {
2534                 $/ = "\n";
2535                 open my $fd, "-|", "$GIT rev-list $hash | $GIT diff-tree -r --stdin -S\'$searchtext\'";
2536                 undef %co;
2537                 my @files;
2538                 while (my $line = <$fd>) {
2539                         if (%co && $line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)\t(.*)$/) {
2540                                 my %set;
2541                                 $set{'file'} = $6;
2542                                 $set{'from_id'} = $3;
2543                                 $set{'to_id'} = $4;
2544                                 $set{'id'} = $set{'to_id'};
2545                                 if ($set{'id'} =~ m/0{40}/) {
2546                                         $set{'id'} = $set{'from_id'};
2547                                 }
2548                                 if ($set{'id'} =~ m/0{40}/) {
2549                                         next;
2550                                 }
2551                                 push @files, \%set;
2552                         } elsif ($line =~ m/^([0-9a-fA-F]{40})$/){
2553                                 if (%co) {
2554                                         if ($alternate) {
2555                                                 print "<tr class=\"dark\">\n";
2556                                         } else {
2557                                                 print "<tr class=\"light\">\n";
2558                                         }
2559                                         $alternate ^= 1;
2560                                         print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
2561                                               "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 5)) . "</i></td>\n" .
2562                                               "<td>" .
2563                                               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commit;h=$co{'id'}"), -class => "list"}, "<b>" .
2564                                               esc_html(chop_str($co{'title'}, 50)) . "</b><br/>");
2565                                         while (my $setref = shift @files) {
2566                                                 my %set = %$setref;
2567                                                 print $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;h=$set{'id'};hb=$co{'id'};f=$set{'file'}"), class => "list"},
2568                                                       "<span class=\"match\">" . esc_html($set{'file'}) . "</span>") .
2569                                                       "<br/>\n";
2570                                         }
2571                                         print "</td>\n" .
2572                                               "<td class=\"link\">" .
2573                                               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commit;h=$co{'id'}")}, "commit") .
2574                                               " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=tree;h=$co{'tree'};hb=$co{'id'}")}, "tree");
2575                                         print "</td>\n" .
2576                                               "</tr>\n";
2577                                 }
2578                                 %co = parse_commit($1);
2579                         }
2580                 }
2581                 close $fd;
2582         }
2583         print "</table>\n";
2584         git_footer_html();
2585 }
2586
2587 sub git_shortlog {
2588         my $head = git_get_head_hash($project);
2589         if (!defined $hash) {
2590                 $hash = $head;
2591         }
2592         if (!defined $page) {
2593                 $page = 0;
2594         }
2595         my $refs = git_get_references();
2596
2597         my $limit = sprintf("--max-count=%i", (100 * ($page+1)));
2598         open my $fd, "-|", $GIT, "rev-list", $limit, $hash
2599                 or die_error(undef, "Open git-rev-list failed");
2600         my @revlist = map { chomp; $_ } <$fd>;
2601         close $fd;
2602
2603         my $paging_nav = format_paging_nav('shortlog', $hash, $head, $page, $#revlist);
2604         my $next_link = '';
2605         if ($#revlist >= (100 * ($page+1)-1)) {
2606                 $next_link =
2607                         $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=shortlog;h=$hash;pg=" . ($page+1)),
2608                                  -title => "Alt-n"}, "next");
2609         }
2610
2611
2612         git_header_html();
2613         git_print_page_nav('shortlog','', $hash,$hash,$hash, $paging_nav);
2614         git_print_header_div('summary', $project);
2615
2616         git_shortlog_body(\@revlist, ($page * 100), $#revlist, $refs, $next_link);
2617
2618         git_footer_html();
2619 }
2620
2621 ## ......................................................................
2622 ## feeds (RSS, OPML)
2623
2624 sub git_rss {
2625         # http://www.notestips.com/80256B3A007F2692/1/NAMO5P9UPQ
2626         open my $fd, "-|", $GIT, "rev-list", "--max-count=150", git_get_head_hash($project)
2627                 or die_error(undef, "Open git-rev-list failed");
2628         my @revlist = map { chomp; $_ } <$fd>;
2629         close $fd or die_error(undef, "Reading git-rev-list failed");
2630         print $cgi->header(-type => 'text/xml', -charset => 'utf-8');
2631         print "<?xml version=\"1.0\" encoding=\"utf-8\"?>\n".
2632               "<rss version=\"2.0\" xmlns:content=\"http://purl.org/rss/1.0/modules/content/\">\n";
2633         print "<channel>\n";
2634         print "<title>$project</title>\n".
2635               "<link>" . esc_html("$my_url?p=$project;a=summary") . "</link>\n".
2636               "<description>$project log</description>\n".
2637               "<language>en</language>\n";
2638
2639         for (my $i = 0; $i <= $#revlist; $i++) {
2640                 my $commit = $revlist[$i];
2641                 my %co = parse_commit($commit);
2642                 # we read 150, we always show 30 and the ones more recent than 48 hours
2643                 if (($i >= 20) && ((time - $co{'committer_epoch'}) > 48*60*60)) {
2644                         last;
2645                 }
2646                 my %cd = parse_date($co{'committer_epoch'});
2647                 open $fd, "-|", $GIT, "diff-tree", '-r', $co{'parent'}, $co{'id'} or next;
2648                 my @difftree = map { chomp; $_ } <$fd>;
2649                 close $fd or next;
2650                 print "<item>\n" .
2651                       "<title>" .
2652                       sprintf("%d %s %02d:%02d", $cd{'mday'}, $cd{'month'}, $cd{'hour'}, $cd{'minute'}) . " - " . esc_html($co{'title'}) .
2653                       "</title>\n" .
2654                       "<author>" . esc_html($co{'author'}) . "</author>\n" .
2655                       "<pubDate>$cd{'rfc2822'}</pubDate>\n" .
2656                       "<guid isPermaLink=\"true\">" . esc_html("$my_url?p=$project;a=commit;h=$commit") . "</guid>\n" .
2657                       "<link>" . esc_html("$my_url?p=$project;a=commit;h=$commit") . "</link>\n" .
2658                       "<description>" . esc_html($co{'title'}) . "</description>\n" .
2659                       "<content:encoded>" .
2660                       "<![CDATA[\n";
2661                 my $comment = $co{'comment'};
2662                 foreach my $line (@$comment) {
2663                         $line = decode("utf8", $line, Encode::FB_DEFAULT);
2664                         print "$line<br/>\n";
2665                 }
2666                 print "<br/>\n";
2667                 foreach my $line (@difftree) {
2668                         if (!($line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)([0-9]{0,3})\t(.*)$/)) {
2669                                 next;
2670                         }
2671                         my $file = validate_input(unquote($7));
2672                         $file = decode("utf8", $file, Encode::FB_DEFAULT);
2673                         print "$file<br/>\n";
2674                 }
2675                 print "]]>\n" .
2676                       "</content:encoded>\n" .
2677                       "</item>\n";
2678         }
2679         print "</channel></rss>";
2680 }
2681
2682 sub git_opml {
2683         my @list = git_get_projects_list();
2684
2685         print $cgi->header(-type => 'text/xml', -charset => 'utf-8');
2686         print "<?xml version=\"1.0\" encoding=\"utf-8\"?>\n".
2687               "<opml version=\"1.0\">\n".
2688               "<head>".
2689               "  <title>$site_name Git OPML Export</title>\n".
2690               "</head>\n".
2691               "<body>\n".
2692               "<outline text=\"git RSS feeds\">\n";
2693
2694         foreach my $pr (@list) {
2695                 my %proj = %$pr;
2696                 my $head = git_get_head_hash($proj{'path'});
2697                 if (!defined $head) {
2698                         next;
2699                 }
2700                 $ENV{'GIT_DIR'} = "$projectroot/$proj{'path'}";
2701                 my %co = parse_commit($head);
2702                 if (!%co) {
2703                         next;
2704                 }
2705
2706                 my $path = esc_html(chop_str($proj{'path'}, 25, 5));
2707                 my $rss  = "$my_url?p=$proj{'path'};a=rss";
2708                 my $html = "$my_url?p=$proj{'path'};a=summary";
2709                 print "<outline type=\"rss\" text=\"$path\" title=\"$path\" xmlUrl=\"$rss\" htmlUrl=\"$html\"/>\n";
2710         }
2711         print "</outline>\n".
2712               "</body>\n".
2713               "</opml>\n";
2714 }