git.oblomov.eu Git - git/blob - gitweb/gitweb.perl

   1 #!/usr/bin/perl
   2
   3 # gitweb - simple web interface to track changes in git repositories
   4 #
   5 # (C) 2005-2006, Kay Sievers <kay.sievers@vrfy.org>
   6 # (C) 2005, Christian Gierke
   7 #
   8 # This program is licensed under the GPLv2
   9
  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 our $rss_link = "";
  25
  26 # core git executable to use
  27 # this can just be "git" if your webserver has a sensible PATH
  28 our $GIT = "@@GIT_BINDIR@@/git";
  29
  30 # absolute fs-path which will be prepended to the project path
  31 #our $projectroot = "/pub/scm";
  32 our $projectroot = "@@GITWEB_PROJECTROOT@@";
  33
  34 # version of the core git binary
  35 our $git_version = qx($GIT --version) =~ m/git version (.*)$/ ? $1 : "unknown";
  36
  37 # location for temporary files needed for diffs
  38 our $git_temp = "/tmp/gitweb";
  39 if (! -d $git_temp) {
  40         mkdir($git_temp, 0700) || die_error("Couldn't mkdir $git_temp");
  41 }
  42
  43 # target of the home link on top of all pages
  44 our $home_link = $my_uri;
  45
  46 # name of your site or organization to appear in page titles
  47 # replace this with something more descriptive for clearer bookmarks
  48 our $site_name = "@@GITWEB_SITENAME@@" || $ENV{'SERVER_NAME'} || "Untitled";
  49
  50 # html text to include at home page
  51 our $home_text = "@@GITWEB_HOMETEXT@@";
  52
  53 # URI of default stylesheet
  54 our $stylesheet = "@@GITWEB_CSS@@";
  55
  56 # source of projects list
  57 our $projects_list = "@@GITWEB_LIST@@" || "$projectroot";
  58
  59 # default blob_plain mimetype and default charset for text/plain blob
  60 our $default_blob_plain_mimetype = 'text/plain';
  61 our $default_text_plain_charset  = undef;
  62
  63 # file to use for guessing MIME types before trying /etc/mime.types
  64 # (relative to the current git repository)
  65 our $mimetypes_file = undef;
  66
  67 # input validation and dispatch
  68 our $action = $cgi->param('a');
  69 if (defined $action) {
  70         if ($action =~ m/[^0-9a-zA-Z\.\-_]/) {
  71                 undef $action;
  72                 die_error(undef, "Invalid action parameter.");
  73         }
  74         if ($action eq "git-logo.png") {
  75                 git_logo();
  76                 exit;
  77         } elsif ($action eq "opml") {
  78                 git_opml();
  79                 exit;
  80         }
  81 }
  82
  83 our $project = ($cgi->param('p') || $ENV{'PATH_INFO'});
  84 if (defined $project) {
  85         $project =~ s|^/||; $project =~ s|/$||;
  86         $project = validate_input($project);
  87         if (!defined($project)) {
  88                 die_error(undef, "Invalid project parameter.");
  89         }
  90         if (!(-d "$projectroot/$project")) {
  91                 undef $project;
  92                 die_error(undef, "No such directory.");
  93         }
  94         if (!(-e "$projectroot/$project/HEAD")) {
  95                 undef $project;
  96                 die_error(undef, "No such project.");
  97         }
  98         $rss_link = "<link rel=\"alternate\" title=\"" . esc_param($project) . " log\" href=\"" .
  99                     "$my_uri?" . esc_param("p=$project;a=rss") . "\" type=\"application/rss+xml\"/>";
 100         $ENV{'GIT_DIR'} = "$projectroot/$project";
 101 } else {
 102         git_project_list();
 103         exit;
 104 }
 105
 106 our $file_name = $cgi->param('f');
 107 if (defined $file_name) {
 108         $file_name = validate_input($file_name);
 109         if (!defined($file_name)) {
 110                 die_error(undef, "Invalid file parameter.");
 111         }
 112 }
 113
 114 our $hash = $cgi->param('h');
 115 if (defined $hash) {
 116         $hash = validate_input($hash);
 117         if (!defined($hash)) {
 118                 die_error(undef, "Invalid hash parameter.");
 119         }
 120 }
 121
 122 our $hash_parent = $cgi->param('hp');
 123 if (defined $hash_parent) {
 124         $hash_parent = validate_input($hash_parent);
 125         if (!defined($hash_parent)) {
 126                 die_error(undef, "Invalid hash parent parameter.");
 127         }
 128 }
 129
 130 our $hash_base = $cgi->param('hb');
 131 if (defined $hash_base) {
 132         $hash_base = validate_input($hash_base);
 133         if (!defined($hash_base)) {
 134                 die_error(undef, "Invalid hash base parameter.");
 135         }
 136 }
 137
 138 our $page = $cgi->param('pg');
 139 if (defined $page) {
 140         if ($page =~ m/[^0-9]$/) {
 141                 undef $page;
 142                 die_error(undef, "Invalid page parameter.");
 143         }
 144 }
 145
 146 our $searchtext = $cgi->param('s');
 147 if (defined $searchtext) {
 148         if ($searchtext =~ m/[^a-zA-Z0-9_\.\/\-\+\:\@ ]/) {
 149                 undef $searchtext;
 150                 die_error(undef, "Invalid search parameter.");
 151         }
 152         $searchtext = quotemeta $searchtext;
 153 }
 154
 155 # dispatch
 156 my %actions = (
 157         "blame" => \&git_blame2,
 158         "blobdiff" => \&git_blobdiff,
 159         "blobdiff_plain" => \&git_blobdiff_plain,
 160         "blob" => \&git_blob,
 161         "blob_plain" => \&git_blob_plain,
 162         "commitdiff" => \&git_commitdiff,
 163         "commitdiff_plain" => \&git_commitdiff_plain,
 164         "commit" => \&git_commit,
 165         "heads" => \&git_heads,
 166         "history" => \&git_history,
 167         "log" => \&git_log,
 168         "rss" => \&git_rss,
 169         "search" => \&git_search,
 170         "shortlog" => \&git_shortlog,
 171         "summary" => \&git_summary,
 172         "tag" => \&git_tag,
 173         "tags" => \&git_tags,
 174         "tree" => \&git_tree,
 175 );
 176
 177 $action = 'summary' if (!defined($action));
 178 if (!defined($actions{$action})) {
 179         undef $action;
 180         die_error(undef, "Unknown action.");
 181 }
 182 $actions{$action}->();
 183 exit;
 184
 185 ## ======================================================================
 186 ## validation, quoting/unquoting and escaping
 187
 188 sub validate_input {
 189         my $input = shift;
 190
 191         if ($input =~ m/^[0-9a-fA-F]{40}$/) {
 192                 return $input;
 193         }
 194         if ($input =~ m/(^|\/)(|\.|\.\.)($|\/)/) {
 195                 return undef;
 196         }
 197         if ($input =~ m/[^a-zA-Z0-9_\x80-\xff\ \t\.\/\-\+\#\~\%]/) {
 198                 return undef;
 199         }
 200         return $input;
 201 }
 202
 203 # quote unsafe chars, but keep the slash, even when it's not
 204 # correct, but quoted slashes look too horrible in bookmarks
 205 sub esc_param {
 206         my $str = shift;
 207         $str =~ s/([^A-Za-z0-9\-_.~();\/;?:@&=])/sprintf("%%%02X", ord($1))/eg;
 208         $str =~ s/\+/%2B/g;
 209         $str =~ s/ /\+/g;
 210         return $str;
 211 }
 212
 213 # replace invalid utf8 character with SUBSTITUTION sequence
 214 sub esc_html {
 215         my $str = shift;
 216         $str = decode("utf8", $str, Encode::FB_DEFAULT);
 217         $str = escapeHTML($str);
 218         $str =~ s/\014/^L/g; # escape FORM FEED (FF) character (e.g. in COPYING file)
 219         return $str;
 220 }
 221
 222 # git may return quoted and escaped filenames
 223 sub unquote {
 224         my $str = shift;
 225         if ($str =~ m/^"(.*)"$/) {
 226                 $str = $1;
 227                 $str =~ s/\\([0-7]{1,3})/chr(oct($1))/eg;
 228         }
 229         return $str;
 230 }
 231
 232 ## ----------------------------------------------------------------------
 233 ## HTML aware string manipulation
 234
 235 sub chop_str {
 236         my $str = shift;
 237         my $len = shift;
 238         my $add_len = shift || 10;
 239
 240         # allow only $len chars, but don't cut a word if it would fit in $add_len
 241         # if it doesn't fit, cut it if it's still longer than the dots we would add
 242         $str =~ m/^(.{0,$len}[^ \/\-_:\.@]{0,$add_len})(.*)/;
 243         my $body = $1;
 244         my $tail = $2;
 245         if (length($tail) > 4) {
 246                 $tail = " ...";
 247                 $body =~ s/&[^;]*$//; # remove chopped character entities
 248         }
 249         return "$body$tail";
 250 }
 251
 252 ## ----------------------------------------------------------------------
 253 ## functions returning short strings
 254
 255 # CSS class for given age value (in seconds)
 256 sub age_class {
 257         my $age = shift;
 258
 259         if ($age < 60*60*2) {
 260                 return "age0";
 261         } elsif ($age < 60*60*24*2) {
 262                 return "age1";
 263         } else {
 264                 return "age2";
 265         }
 266 }
 267
 268 # convert age in seconds to "nn units ago" string
 269 sub age_string {
 270         my $age = shift;
 271         my $age_str;
 272
 273         if ($age > 60*60*24*365*2) {
 274                 $age_str = (int $age/60/60/24/365);
 275                 $age_str .= " years ago";
 276         } elsif ($age > 60*60*24*(365/12)*2) {
 277                 $age_str = int $age/60/60/24/(365/12);
 278                 $age_str .= " months ago";
 279         } elsif ($age > 60*60*24*7*2) {
 280                 $age_str = int $age/60/60/24/7;
 281                 $age_str .= " weeks ago";
 282         } elsif ($age > 60*60*24*2) {
 283                 $age_str = int $age/60/60/24;
 284                 $age_str .= " days ago";
 285         } elsif ($age > 60*60*2) {
 286                 $age_str = int $age/60/60;
 287                 $age_str .= " hours ago";
 288         } elsif ($age > 60*2) {
 289                 $age_str = int $age/60;
 290                 $age_str .= " min ago";
 291         } elsif ($age > 2) {
 292                 $age_str = int $age;
 293                 $age_str .= " sec ago";
 294         } else {
 295                 $age_str .= " right now";
 296         }
 297         return $age_str;
 298 }
 299
 300 # convert file mode in octal to symbolic file mode string
 301 sub mode_str {
 302         my $mode = oct shift;
 303
 304         if (S_ISDIR($mode & S_IFMT)) {
 305                 return 'drwxr-xr-x';
 306         } elsif (S_ISLNK($mode)) {
 307                 return 'lrwxrwxrwx';
 308         } elsif (S_ISREG($mode)) {
 309                 # git cares only about the executable bit
 310                 if ($mode & S_IXUSR) {
 311                         return '-rwxr-xr-x';
 312                 } else {
 313                         return '-rw-r--r--';
 314                 };
 315         } else {
 316                 return '----------';
 317         }
 318 }
 319
 320 # convert file mode in octal to file type string
 321 sub file_type {
 322         my $mode = oct shift;
 323
 324         if (S_ISDIR($mode & S_IFMT)) {
 325                 return "directory";
 326         } elsif (S_ISLNK($mode)) {
 327                 return "symlink";
 328         } elsif (S_ISREG($mode)) {
 329                 return "file";
 330         } else {
 331                 return "unknown";
 332         }
 333 }
 334
 335 ## ----------------------------------------------------------------------
 336 ## functions returning short HTML fragments, or transforming HTML fragments
 337 ## which don't beling to other sections
 338
 339 # format line of commit message or tag comment
 340 sub format_log_line_html {
 341         my $line = shift;
 342
 343         $line = esc_html($line);
 344         $line =~ s/ /&nbsp;/g;
 345         if ($line =~ m/([0-9a-fA-F]{40})/) {
 346                 my $hash_text = $1;
 347                 if (git_get_type($hash_text) eq "commit") {
 348                         my $link = $cgi->a({-class => "text", -href => "$my_uri?" . esc_param("p=$project;a=commit;h=$hash_text")}, $hash_text);
 349                         $line =~ s/$hash_text/$link/;
 350                 }
 351         }
 352         return $line;
 353 }
 354
 355 # format marker of refs pointing to given object
 356 sub git_get_referencing {
 357         my ($refs, $id) = @_;
 358
 359         if (defined $refs->{$id}) {
 360                 return ' <span class="tag">' . esc_html($refs->{$id}) . '</span>';
 361         } else {
 362                 return "";
 363         }
 364 }
 365
 366 ## ----------------------------------------------------------------------
 367 ## git utility subroutines, invoking git commands
 368
 369 # get HEAD ref of given project as hash
 370 sub git_read_head {
 371         my $project = shift;
 372         my $oENV = $ENV{'GIT_DIR'};
 373         my $retval = undef;
 374         $ENV{'GIT_DIR'} = "$projectroot/$project";
 375         if (open my $fd, "-|", $GIT, "rev-parse", "--verify", "HEAD") {
 376                 my $head = <$fd>;
 377                 close $fd;
 378                 if (defined $head && $head =~ /^([0-9a-fA-F]{40})$/) {
 379                         $retval = $1;
 380                 }
 381         }
 382         if (defined $oENV) {
 383                 $ENV{'GIT_DIR'} = $oENV;
 384         }
 385         return $retval;
 386 }
 387
 388 # get type of given object
 389 sub git_get_type {
 390         my $hash = shift;
 391
 392         open my $fd, "-|", $GIT, "cat-file", '-t', $hash or return;
 393         my $type = <$fd>;
 394         close $fd or return;
 395         chomp $type;
 396         return $type;
 397 }
 398
 399 sub git_get_project_config {
 400         my $key = shift;
 401
 402         return unless ($key);
 403         $key =~ s/^gitweb\.//;
 404         return if ($key =~ m/\W/);
 405
 406         my $val = qx($GIT repo-config --get gitweb.$key);
 407         return ($val);
 408 }
 409
 410 sub git_get_project_config_bool {
 411         my $val = git_get_project_config (@_);
 412         if ($val and $val =~ m/true|yes|on/) {
 413                 return (1);
 414         }
 415         return; # implicit false
 416 }
 417
 418 # get hash of given path at given ref
 419 sub git_get_hash_by_path {
 420         my $base = shift;
 421         my $path = shift || return undef;
 422
 423         my $tree = $base;
 424
 425         open my $fd, "-|", $GIT, "ls-tree", $base, "--", $path
 426                 or die_error(undef, "Open git-ls-tree failed.");
 427         my $line = <$fd>;
 428         close $fd or return undef;
 429
 430         #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
 431         $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t(.+)$/;
 432         return $3;
 433 }
 434
 435 ## ......................................................................
 436 ## git utility functions, directly accessing git repository
 437
 438 # assumes that PATH is not symref
 439 sub git_read_hash {
 440         my $path = shift;
 441
 442         open my $fd, "$projectroot/$path" or return undef;
 443         my $head = <$fd>;
 444         close $fd;
 445         chomp $head;
 446         if ($head =~ m/^[0-9a-fA-F]{40}$/) {
 447                 return $head;
 448         }
 449 }
 450
 451 sub git_read_description {
 452         my $path = shift;
 453
 454         open my $fd, "$projectroot/$path/description" or return undef;
 455         my $descr = <$fd>;
 456         close $fd;
 457         chomp $descr;
 458         return $descr;
 459 }
 460
 461 sub git_read_projects {
 462         my @list;
 463
 464         if (-d $projects_list) {
 465                 # search in directory
 466                 my $dir = $projects_list;
 467                 opendir my ($dh), $dir or return undef;
 468                 while (my $dir = readdir($dh)) {
 469                         if (-e "$projectroot/$dir/HEAD") {
 470                                 my $pr = {
 471                                         path => $dir,
 472                                 };
 473                                 push @list, $pr
 474                         }
 475                 }
 476                 closedir($dh);
 477         } elsif (-f $projects_list) {
 478                 # read from file(url-encoded):
 479                 # 'git%2Fgit.git Linus+Torvalds'
 480                 # 'libs%2Fklibc%2Fklibc.git H.+Peter+Anvin'
 481                 # 'linux%2Fhotplug%2Fudev.git Greg+Kroah-Hartman'
 482                 open my ($fd), $projects_list or return undef;
 483                 while (my $line = <$fd>) {
 484                         chomp $line;
 485                         my ($path, $owner) = split ' ', $line;
 486                         $path = unescape($path);
 487                         $owner = unescape($owner);
 488                         if (!defined $path) {
 489                                 next;
 490                         }
 491                         if (-e "$projectroot/$path/HEAD") {
 492                                 my $pr = {
 493                                         path => $path,
 494                                         owner => decode("utf8", $owner, Encode::FB_DEFAULT),
 495                                 };
 496                                 push @list, $pr
 497                         }
 498                 }
 499                 close $fd;
 500         }
 501         @list = sort {$a->{'path'} cmp $b->{'path'}} @list;
 502         return @list;
 503 }
 504
 505 sub read_info_ref {
 506         my $type = shift || "";
 507         my %refs;
 508         # 5dc01c595e6c6ec9ccda4f6f69c131c0dd945f8c      refs/tags/v2.6.11
 509         # c39ae07f393806ccf406ef966e9a15afc43cc36a      refs/tags/v2.6.11^{}
 510         open my $fd, "$projectroot/$project/info/refs" or return;
 511         while (my $line = <$fd>) {
 512                 chomp $line;
 513                 # attention: for $type == "" it saves only last path part of ref name
 514                 # e.g. from 'refs/heads/jn/gitweb' it would leave only 'gitweb'
 515                 if ($line =~ m/^([0-9a-fA-F]{40})\t.*$type\/([^\^]+)/) {
 516                         if (defined $refs{$1}) {
 517                                 $refs{$1} .= " / $2";
 518                         } else {
 519                                 $refs{$1} = $2;
 520                         }
 521                 }
 522         }
 523         close $fd or return;
 524         return \%refs;
 525 }
 526
 527 ## ----------------------------------------------------------------------
 528 ## parse to hash functions
 529
 530 sub date_str {
 531         my $epoch = shift;
 532         my $tz = shift || "-0000";
 533
 534         my %date;
 535         my @months = ("Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec");
 536         my @days = ("Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat");
 537         my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($epoch);
 538         $date{'hour'} = $hour;
 539         $date{'minute'} = $min;
 540         $date{'mday'} = $mday;
 541         $date{'day'} = $days[$wday];
 542         $date{'month'} = $months[$mon];
 543         $date{'rfc2822'} = sprintf "%s, %d %s %4d %02d:%02d:%02d +0000", $days[$wday], $mday, $months[$mon], 1900+$year, $hour ,$min, $sec;
 544         $date{'mday-time'} = sprintf "%d %s %02d:%02d", $mday, $months[$mon], $hour ,$min;
 545
 546         $tz =~ m/^([+\-][0-9][0-9])([0-9][0-9])$/;
 547         my $local = $epoch + ((int $1 + ($2/60)) * 3600);
 548         ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($local);
 549         $date{'hour_local'} = $hour;
 550         $date{'minute_local'} = $min;
 551         $date{'tz_local'} = $tz;
 552         return %date;
 553 }
 554
 555 sub git_read_tag {
 556         my $tag_id = shift;
 557         my %tag;
 558         my @comment;
 559
 560         open my $fd, "-|", $GIT, "cat-file", "tag", $tag_id or return;
 561         $tag{'id'} = $tag_id;
 562         while (my $line = <$fd>) {
 563                 chomp $line;
 564                 if ($line =~ m/^object ([0-9a-fA-F]{40})$/) {
 565                         $tag{'object'} = $1;
 566                 } elsif ($line =~ m/^type (.+)$/) {
 567                         $tag{'type'} = $1;
 568                 } elsif ($line =~ m/^tag (.+)$/) {
 569                         $tag{'name'} = $1;
 570                 } elsif ($line =~ m/^tagger (.*) ([0-9]+) (.*)$/) {
 571                         $tag{'author'} = $1;
 572                         $tag{'epoch'} = $2;
 573                         $tag{'tz'} = $3;
 574                 } elsif ($line =~ m/--BEGIN/) {
 575                         push @comment, $line;
 576                         last;
 577                 } elsif ($line eq "") {
 578                         last;
 579                 }
 580         }
 581         push @comment, <$fd>;
 582         $tag{'comment'} = \@comment;
 583         close $fd or return;
 584         if (!defined $tag{'name'}) {
 585                 return
 586         };
 587         return %tag
 588 }
 589
 590 sub git_read_commit {
 591         my $commit_id = shift;
 592         my $commit_text = shift;
 593
 594         my @commit_lines;
 595         my %co;
 596
 597         if (defined $commit_text) {
 598                 @commit_lines = @$commit_text;
 599         } else {
 600                 $/ = "\0";
 601                 open my $fd, "-|", $GIT, "rev-list", "--header", "--parents", "--max-count=1", $commit_id or return;
 602                 @commit_lines = split '\n', <$fd>;
 603                 close $fd or return;
 604                 $/ = "\n";
 605                 pop @commit_lines;
 606         }
 607         my $header = shift @commit_lines;
 608         if (!($header =~ m/^[0-9a-fA-F]{40}/)) {
 609                 return;
 610         }
 611         ($co{'id'}, my @parents) = split ' ', $header;
 612         $co{'parents'} = \@parents;
 613         $co{'parent'} = $parents[0];
 614         while (my $line = shift @commit_lines) {
 615                 last if $line eq "\n";
 616                 if ($line =~ m/^tree ([0-9a-fA-F]{40})$/) {
 617                         $co{'tree'} = $1;
 618                 } elsif ($line =~ m/^author (.*) ([0-9]+) (.*)$/) {
 619                         $co{'author'} = $1;
 620                         $co{'author_epoch'} = $2;
 621                         $co{'author_tz'} = $3;
 622                         if ($co{'author'} =~ m/^([^<]+) </) {
 623                                 $co{'author_name'} = $1;
 624                         } else {
 625                                 $co{'author_name'} = $co{'author'};
 626                         }
 627                 } elsif ($line =~ m/^committer (.*) ([0-9]+) (.*)$/) {
 628                         $co{'committer'} = $1;
 629                         $co{'committer_epoch'} = $2;
 630                         $co{'committer_tz'} = $3;
 631                         $co{'committer_name'} = $co{'committer'};
 632                         $co{'committer_name'} =~ s/ <.*//;
 633                 }
 634         }
 635         if (!defined $co{'tree'}) {
 636                 return;
 637         };
 638
 639         foreach my $title (@commit_lines) {
 640                 $title =~ s/^    //;
 641                 if ($title ne "") {
 642                         $co{'title'} = chop_str($title, 80, 5);
 643                         # remove leading stuff of merges to make the interesting part visible
 644                         if (length($title) > 50) {
 645                                 $title =~ s/^Automatic //;
 646                                 $title =~ s/^merge (of|with) /Merge ... /i;
 647                                 if (length($title) > 50) {
 648                                         $title =~ s/(http|rsync):\/\///;
 649                                 }
 650                                 if (length($title) > 50) {
 651                                         $title =~ s/(master|www|rsync)\.//;
 652                                 }
 653                                 if (length($title) > 50) {
 654                                         $title =~ s/kernel.org:?//;
 655                                 }
 656                                 if (length($title) > 50) {
 657                                         $title =~ s/\/pub\/scm//;
 658                                 }
 659                         }
 660                         $co{'title_short'} = chop_str($title, 50, 5);
 661                         last;
 662                 }
 663         }
 664         # remove added spaces
 665         foreach my $line (@commit_lines) {
 666                 $line =~ s/^    //;
 667         }
 668         $co{'comment'} = \@commit_lines;
 669
 670         my $age = time - $co{'committer_epoch'};
 671         $co{'age'} = $age;
 672         $co{'age_string'} = age_string($age);
 673         my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($co{'committer_epoch'});
 674         if ($age > 60*60*24*7*2) {
 675                 $co{'age_string_date'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
 676                 $co{'age_string_age'} = $co{'age_string'};
 677         } else {
 678                 $co{'age_string_date'} = $co{'age_string'};
 679                 $co{'age_string_age'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
 680         }
 681         return %co;
 682 }
 683
 684 ## ......................................................................
 685 ## parse to array of hashes functions
 686
 687 sub git_read_refs {
 688         my $ref_dir = shift;
 689         my @reflist;
 690
 691         my @refs;
 692         my $pfxlen = length("$projectroot/$project/$ref_dir");
 693         File::Find::find(sub {
 694                 return if (/^\./);
 695                 if (-f $_) {
 696                         push @refs, substr($File::Find::name, $pfxlen + 1);
 697                 }
 698         }, "$projectroot/$project/$ref_dir");
 699
 700         foreach my $ref_file (@refs) {
 701                 my $ref_id = git_read_hash("$project/$ref_dir/$ref_file");
 702                 my $type = git_get_type($ref_id) || next;
 703                 my %ref_item;
 704                 my %co;
 705                 $ref_item{'type'} = $type;
 706                 $ref_item{'id'} = $ref_id;
 707                 $ref_item{'epoch'} = 0;
 708                 $ref_item{'age'} = "unknown";
 709                 if ($type eq "tag") {
 710                         my %tag = git_read_tag($ref_id);
 711                         $ref_item{'comment'} = $tag{'comment'};
 712                         if ($tag{'type'} eq "commit") {
 713                                 %co = git_read_commit($tag{'object'});
 714                                 $ref_item{'epoch'} = $co{'committer_epoch'};
 715                                 $ref_item{'age'} = $co{'age_string'};
 716                         } elsif (defined($tag{'epoch'})) {
 717                                 my $age = time - $tag{'epoch'};
 718                                 $ref_item{'epoch'} = $tag{'epoch'};
 719                                 $ref_item{'age'} = age_string($age);
 720                         }
 721                         $ref_item{'reftype'} = $tag{'type'};
 722                         $ref_item{'name'} = $tag{'name'};
 723                         $ref_item{'refid'} = $tag{'object'};
 724                 } elsif ($type eq "commit"){
 725                         %co = git_read_commit($ref_id);
 726                         $ref_item{'reftype'} = "commit";
 727                         $ref_item{'name'} = $ref_file;
 728                         $ref_item{'title'} = $co{'title'};
 729                         $ref_item{'refid'} = $ref_id;
 730                         $ref_item{'epoch'} = $co{'committer_epoch'};
 731                         $ref_item{'age'} = $co{'age_string'};
 732                 } else {
 733                         $ref_item{'reftype'} = $type;
 734                         $ref_item{'name'} = $ref_file;
 735                         $ref_item{'refid'} = $ref_id;
 736                 }
 737
 738                 push @reflist, \%ref_item;
 739         }
 740         # sort tags by age
 741         @reflist = sort {$b->{'epoch'} <=> $a->{'epoch'}} @reflist;
 742         return \@reflist;
 743 }
 744
 745 ## ----------------------------------------------------------------------
 746 ## filesystem-related functions
 747
 748 sub get_file_owner {
 749         my $path = shift;
 750
 751         my ($dev, $ino, $mode, $nlink, $st_uid, $st_gid, $rdev, $size) = stat($path);
 752         my ($name, $passwd, $uid, $gid, $quota, $comment, $gcos, $dir, $shell) = getpwuid($st_uid);
 753         if (!defined $gcos) {
 754                 return undef;
 755         }
 756         my $owner = $gcos;
 757         $owner =~ s/[,;].*$//;
 758         return decode("utf8", $owner, Encode::FB_DEFAULT);
 759 }
 760
 761 ## ......................................................................
 762 ## mimetype related functions
 763
 764 sub mimetype_guess_file {
 765         my $filename = shift;
 766         my $mimemap = shift;
 767         -r $mimemap or return undef;
 768
 769         my %mimemap;
 770         open(MIME, $mimemap) or return undef;
 771         while (<MIME>) {
 772                 my ($mime, $exts) = split(/\t+/);
 773                 if (defined $exts) {
 774                         my @exts = split(/\s+/, $exts);
 775                         foreach my $ext (@exts) {
 776                                 $mimemap{$ext} = $mime;
 777                         }
 778                 }
 779         }
 780         close(MIME);
 781
 782         $filename =~ /\.(.*?)$/;
 783         return $mimemap{$1};
 784 }
 785
 786 sub mimetype_guess {
 787         my $filename = shift;
 788         my $mime;
 789         $filename =~ /\./ or return undef;
 790
 791         if ($mimetypes_file) {
 792                 my $file = $mimetypes_file;
 793                 #$file =~ m#^/# or $file = "$projectroot/$path/$file";
 794                 $mime = mimetype_guess_file($filename, $file);
 795         }
 796         $mime ||= mimetype_guess_file($filename, '/etc/mime.types');
 797         return $mime;
 798 }
 799
 800 sub git_blob_plain_mimetype {
 801         my $fd = shift;
 802         my $filename = shift;
 803
 804         if ($filename) {
 805                 my $mime = mimetype_guess($filename);
 806                 $mime and return $mime;
 807         }
 808
 809         # just in case
 810         return $default_blob_plain_mimetype unless $fd;
 811
 812         if (-T $fd) {
 813                 return 'text/plain' .
 814                        ($default_text_plain_charset ? '; charset='.$default_text_plain_charset : '');
 815         } elsif (! $filename) {
 816                 return 'application/octet-stream';
 817         } elsif ($filename =~ m/\.png$/i) {
 818                 return 'image/png';
 819         } elsif ($filename =~ m/\.gif$/i) {
 820                 return 'image/gif';
 821         } elsif ($filename =~ m/\.jpe?g$/i) {
 822                 return 'image/jpeg';
 823         } else {
 824                 return 'application/octet-stream';
 825         }
 826 }
 827
 828 ## ======================================================================
 829 ## functions printing HTML: header, footer, error page
 830
 831 sub git_header_html {
 832         my $status = shift || "200 OK";
 833         my $expires = shift;
 834
 835         my $title = "$site_name git";
 836         if (defined $project) {
 837                 $title .= " - $project";
 838                 if (defined $action) {
 839                         $title .= "/$action";
 840                         if (defined $file_name) {
 841                                 $title .= " - $file_name";
 842                                 if ($action eq "tree" && $file_name !~ m|/$|) {
 843                                         $title .= "/";
 844                                 }
 845                         }
 846                 }
 847         }
 848         my $content_type;
 849         # require explicit support from the UA if we are to send the page as
 850         # 'application/xhtml+xml', otherwise send it as plain old 'text/html'.
 851         # we have to do this because MSIE sometimes globs '*/*', pretending to
 852         # support xhtml+xml but choking when it gets what it asked for.
 853         if ($cgi->http('HTTP_ACCEPT') =~ m/(,|;|\s|^)application\/xhtml\+xml(,|;|\s|$)/ && $cgi->Accept('application/xhtml+xml') != 0) {
 854                 $content_type = 'application/xhtml+xml';
 855         } else {
 856                 $content_type = 'text/html';
 857         }
 858         print $cgi->header(-type=>$content_type, -charset => 'utf-8', -status=> $status, -expires => $expires);
 859         print <<EOF;
 860 <?xml version="1.0" encoding="utf-8"?>
 861 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
 862 <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en-US" lang="en-US">
 863 <!-- git web interface v$version, (C) 2005-2006, Kay Sievers <kay.sievers\@vrfy.org>, Christian Gierke -->
 864 <!-- git core binaries version $git_version -->
 865 <head>
 866 <meta http-equiv="content-type" content="$content_type; charset=utf-8"/>
 867 <meta name="robots" content="index, nofollow"/>
 868 <title>$title</title>
 869 <link rel="stylesheet" type="text/css" href="$stylesheet"/>
 870 $rss_link
 871 </head>
 872 <body>
 873 EOF
 874         print "<div class=\"page_header\">\n" .
 875               "<a href=\"http://www.kernel.org/pub/software/scm/git/docs/\" title=\"git documentation\">" .
 876               "<img src=\"$my_uri?" . esc_param("a=git-logo.png") . "\" width=\"72\" height=\"27\" alt=\"git\" style=\"float:right; border-width:0px;\"/>" .
 877               "</a>\n";
 878         print $cgi->a({-href => esc_param($home_link)}, "projects") . " / ";
 879         if (defined $project) {
 880                 print $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=summary")}, esc_html($project));
 881                 if (defined $action) {
 882                         print " / $action";
 883                 }
 884                 print "\n";
 885                 if (!defined $searchtext) {
 886                         $searchtext = "";
 887                 }
 888                 my $search_hash;
 889                 if (defined $hash_base) {
 890                         $search_hash = $hash_base;
 891                 } elsif (defined $hash) {
 892                         $search_hash = $hash;
 893                 } else {
 894                         $search_hash = "HEAD";
 895                 }
 896                 $cgi->param("a", "search");
 897                 $cgi->param("h", $search_hash);
 898                 print $cgi->startform(-method => "get", -action => $my_uri) .
 899                       "<div class=\"search\">\n" .
 900                       $cgi->hidden(-name => "p") . "\n" .
 901                       $cgi->hidden(-name => "a") . "\n" .
 902                       $cgi->hidden(-name => "h") . "\n" .
 903                       $cgi->textfield(-name => "s", -value => $searchtext) . "\n" .
 904                       "</div>" .
 905                       $cgi->end_form() . "\n";
 906         }
 907         print "</div>\n";
 908 }
 909
 910 sub git_footer_html {
 911         print "<div class=\"page_footer\">\n";
 912         if (defined $project) {
 913                 my $descr = git_read_description($project);
 914                 if (defined $descr) {
 915                         print "<div class=\"page_footer_text\">" . esc_html($descr) . "</div>\n";
 916                 }
 917                 print $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=rss"), -class => "rss_logo"}, "RSS") . "\n";
 918         } else {
 919                 print $cgi->a({-href => "$my_uri?" . esc_param("a=opml"), -class => "rss_logo"}, "OPML") . "\n";
 920         }
 921         print "</div>\n" .
 922               "</body>\n" .
 923               "</html>";
 924 }
 925
 926 sub die_error {
 927         my $status = shift || "403 Forbidden";
 928         my $error = shift || "Malformed query, file missing or permission denied";
 929
 930         git_header_html($status);
 931         print "<div class=\"page_body\">\n" .
 932               "<br/><br/>\n" .
 933               "$status - $error\n" .
 934               "<br/>\n" .
 935               "</div>\n";
 936         git_footer_html();
 937         exit;
 938 }
 939
 940 ## ----------------------------------------------------------------------
 941 ## functions printing or outputting HTML: navigation
 942
 943 sub git_page_nav {
 944         my ($current, $suppress, $head, $treehead, $treebase, $extra) = @_;
 945         $extra = '' if !defined $extra; # pager or formats
 946
 947         my @navs = qw(summary shortlog log commit commitdiff tree);
 948         if ($suppress) {
 949                 @navs = grep { $_ ne $suppress } @navs;
 950         }
 951
 952         my %arg = map { $_, ''} @navs;
 953         if (defined $head) {
 954                 for (qw(commit commitdiff)) {
 955                         $arg{$_} = ";h=$head";
 956                 }
 957                 if ($current =~ m/^(tree | log | shortlog | commit | commitdiff | search)$/x) {
 958                         for (qw(shortlog log)) {
 959                                 $arg{$_} = ";h=$head";
 960                         }
 961                 }
 962         }
 963         $arg{tree} .= ";h=$treehead" if defined $treehead;
 964         $arg{tree} .= ";hb=$treebase" if defined $treebase;
 965
 966         print "<div class=\"page_nav\">\n" .
 967                 (join " | ",
 968                  map { $_ eq $current
 969                                          ? $_
 970                                          : $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=$_$arg{$_}")}, "$_")
 971                                  }
 972                  @navs);
 973         print "<br/>\n$extra<br/>\n" .
 974               "</div>\n";
 975 }
 976
 977 sub git_get_paging_nav {
 978         my ($action, $hash, $head, $page, $nrevs) = @_;
 979         my $paging_nav;
 980
 981
 982         if ($hash ne $head || $page) {
 983                 $paging_nav .= $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=$action")}, "HEAD");
 984         } else {
 985                 $paging_nav .= "HEAD";
 986         }
 987
 988         if ($page > 0) {
 989                 $paging_nav .= " &sdot; " .
 990                         $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=$action;h=$hash;pg=" . ($page-1)),
 991                                                          -accesskey => "p", -title => "Alt-p"}, "prev");
 992         } else {
 993                 $paging_nav .= " &sdot; prev";
 994         }
 995
 996         if ($nrevs >= (100 * ($page+1)-1)) {
 997                 $paging_nav .= " &sdot; " .
 998                         $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=$action;h=$hash;pg=" . ($page+1)),
 999                                                          -accesskey => "n", -title => "Alt-n"}, "next");
1000         } else {
1001                 $paging_nav .= " &sdot; next";
1002         }
1003
1004         return $paging_nav;
1005 }
1006
1007 ## ......................................................................
1008 ## functions printing or outputting HTML: div
1009
1010 sub git_header_div {
1011         my ($action, $title, $hash, $hash_base) = @_;
1012         my $rest = '';
1013
1014         $rest .= ";h=$hash" if $hash;
1015         $rest .= ";hb=$hash_base" if $hash_base;
1016
1017         print "<div class=\"header\">\n" .
1018               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=$action$rest"),
1019                        -class => "title"}, $title ? $title : $action) . "\n" .
1020               "</div>\n";
1021 }
1022
1023 sub git_print_page_path {
1024         my $name = shift;
1025         my $type = shift;
1026
1027         if (!defined $name) {
1028                 print "<div class=\"page_path\"><b>/</b></div>\n";
1029         } elsif (defined $type && $type eq 'blob') {
1030                 print "<div class=\"page_path\"><b>" .
1031                         $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob_plain;f=$file_name")}, esc_html($name)) . "</b><br/></div>\n";
1032         } else {
1033                 print "<div class=\"page_path\"><b>" . esc_html($name) . "</b><br/></div>\n";
1034         }
1035 }
1036
1037 ## ......................................................................
1038 ## functions printing large fragments of HTML
1039
1040 sub git_shortlog_body {
1041         # uses global variable $project
1042         my ($revlist, $from, $to, $refs, $extra) = @_;
1043         $from = 0 unless defined $from;
1044         $to = $#{$revlist} if (!defined $to || $#{$revlist} < $to);
1045
1046         print "<table class=\"shortlog\" cellspacing=\"0\">\n";
1047         my $alternate = 0;
1048         for (my $i = $from; $i <= $to; $i++) {
1049                 my $commit = $revlist->[$i];
1050                 #my $ref = defined $refs ? git_get_referencing($refs, $commit) : '';
1051                 my $ref = git_get_referencing($refs, $commit);
1052                 my %co = git_read_commit($commit);
1053                 my %ad = date_str($co{'author_epoch'});
1054                 if ($alternate) {
1055                         print "<tr class=\"dark\">\n";
1056                 } else {
1057                         print "<tr class=\"light\">\n";
1058                 }
1059                 $alternate ^= 1;
1060                 # git_summary() used print "<td><i>$co{'age_string'}</i></td>\n" .
1061                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
1062                       "<td><i>" . esc_html(chop_str($co{'author_name'}, 10)) . "</i></td>\n" .
1063                       "<td>";
1064                 if (length($co{'title_short'}) < length($co{'title'})) {
1065                         print $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commit;h=$commit"),
1066                                        -class => "list", -title => "$co{'title'}"},
1067                               "<b>" . esc_html($co{'title_short'}) . "$ref</b>");
1068                 } else {
1069                         print $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commit;h=$commit"),
1070                                        -class => "list"},
1071                               "<b>" . esc_html($co{'title'}) . "$ref</b>");
1072                 }
1073                 print "</td>\n" .
1074                       "<td class=\"link\">" .
1075                       $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commit;h=$commit")}, "commit") . " | " .
1076                       $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commitdiff;h=$commit")}, "commitdiff") .
1077                       "</td>\n" .
1078                       "</tr>\n";
1079         }
1080         if (defined $extra) {
1081                 print "<tr>\n" .
1082                       "<td colspan=\"4\">$extra</td>\n" .
1083                       "</tr>\n";
1084         }
1085         print "</table>\n";
1086 }
1087
1088 sub git_tags_body {
1089         # uses global variable $project
1090         my ($taglist, $from, $to, $extra) = @_;
1091         $from = 0 unless defined $from;
1092         $to = $#{$taglist} if (!defined $to || $#{$taglist} < $to);
1093
1094         print "<table class=\"tags\" cellspacing=\"0\">\n";
1095         my $alternate = 0;
1096         for (my $i = $from; $i <= $to; $i++) {
1097                 my $entry = $taglist->[$i];
1098                 my %tag = %$entry;
1099                 my $comment_lines = $tag{'comment'};
1100                 my $comment = shift @$comment_lines;
1101                 my $comment_short;
1102                 if (defined $comment) {
1103                         $comment_short = chop_str($comment, 30, 5);
1104                 }
1105                 if ($alternate) {
1106                         print "<tr class=\"dark\">\n";
1107                 } else {
1108                         print "<tr class=\"light\">\n";
1109                 }
1110                 $alternate ^= 1;
1111                 print "<td><i>$tag{'age'}</i></td>\n" .
1112                       "<td>" .
1113                       $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=$tag{'reftype'};h=$tag{'refid'}"),
1114                                -class => "list"}, "<b>" . esc_html($tag{'name'}) . "</b>") .
1115                       "</td>\n" .
1116                       "<td>";
1117                 if (defined $comment) {
1118                         if (length($comment_short) < length($comment)) {
1119                                 print $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=tag;h=$tag{'id'}"),
1120                                                -class => "list", -title => $comment}, $comment_short);
1121                         } else {
1122                                 print $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=tag;h=$tag{'id'}"),
1123                                                -class => "list"}, $comment);
1124                         }
1125                 }
1126                 print "</td>\n" .
1127                       "<td class=\"selflink\">";
1128                 if ($tag{'type'} eq "tag") {
1129                         print $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=tag;h=$tag{'id'}")}, "tag");
1130                 } else {
1131                         print "&nbsp;";
1132                 }
1133                 print "</td>\n" .
1134                       "<td class=\"link\">" . " | " .
1135                       $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=$tag{'reftype'};h=$tag{'refid'}")}, $tag{'reftype'});
1136                 if ($tag{'reftype'} eq "commit") {
1137                         print " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=shortlog;h=$tag{'name'}")}, "shortlog") .
1138                               " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=log;h=$tag{'refid'}")}, "log");
1139                 } elsif ($tag{'reftype'} eq "blob") {
1140                         print " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob_plain;h=$tag{'refid'}")}, "raw");
1141                 }
1142                 print "</td>\n" .
1143                       "</tr>";
1144         }
1145         if (defined $extra) {
1146                 print "<tr>\n" .
1147                       "<td colspan=\"5\">$extra</td>\n" .
1148                       "</tr>\n";
1149         }
1150         print "</table>\n";
1151 }
1152
1153 sub git_heads_body {
1154         # uses global variable $project
1155         my ($taglist, $head, $from, $to, $extra) = @_;
1156         $from = 0 unless defined $from;
1157         $to = $#{$taglist} if (!defined $to || $#{$taglist} < $to);
1158
1159         print "<table class=\"heads\" cellspacing=\"0\">\n";
1160         my $alternate = 0;
1161         for (my $i = $from; $i <= $to; $i++) {
1162                 my $entry = $taglist->[$i];
1163                 my %tag = %$entry;
1164                 my $curr = $tag{'id'} eq $head;
1165                 if ($alternate) {
1166                         print "<tr class=\"dark\">\n";
1167                 } else {
1168                         print "<tr class=\"light\">\n";
1169                 }
1170                 $alternate ^= 1;
1171                 print "<td><i>$tag{'age'}</i></td>\n" .
1172                       ($tag{'id'} eq $head ? "<td class=\"current_head\">" : "<td>") .
1173                       $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=shortlog;h=$tag{'name'}"),
1174                                -class => "list"}, "<b>" . esc_html($tag{'name'}) . "</b>") .
1175                       "</td>\n" .
1176                       "<td class=\"link\">" .
1177                       $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=shortlog;h=$tag{'name'}")}, "shortlog") . " | " .
1178                       $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=log;h=$tag{'name'}")}, "log") .
1179                       "</td>\n" .
1180                       "</tr>";
1181         }
1182         if (defined $extra) {
1183                 print "<tr>\n" .
1184                       "<td colspan=\"3\">$extra</td>\n" .
1185                       "</tr>\n";
1186         }
1187         print "</table>\n";
1188 }
1189
1190 ## ----------------------------------------------------------------------
1191 ## functions printing large fragments, format as one of arguments
1192
1193 sub git_diff_print {
1194         my $from = shift;
1195         my $from_name = shift;
1196         my $to = shift;
1197         my $to_name = shift;
1198         my $format = shift || "html";
1199
1200         my $from_tmp = "/dev/null";
1201         my $to_tmp = "/dev/null";
1202         my $pid = $$;
1203
1204         # create tmp from-file
1205         if (defined $from) {
1206                 $from_tmp = "$git_temp/gitweb_" . $$ . "_from";
1207                 open my $fd2, "> $from_tmp";
1208                 open my $fd, "-|", $GIT, "cat-file", "blob", $from;
1209                 my @file = <$fd>;
1210                 print $fd2 @file;
1211                 close $fd2;
1212                 close $fd;
1213         }
1214
1215         # create tmp to-file
1216         if (defined $to) {
1217                 $to_tmp = "$git_temp/gitweb_" . $$ . "_to";
1218                 open my $fd2, "> $to_tmp";
1219                 open my $fd, "-|", $GIT, "cat-file", "blob", $to;
1220                 my @file = <$fd>;
1221                 print $fd2 @file;
1222                 close $fd2;
1223                 close $fd;
1224         }
1225
1226         open my $fd, "-|", "/usr/bin/diff -u -p -L \'$from_name\' -L \'$to_name\' $from_tmp $to_tmp";
1227         if ($format eq "plain") {
1228                 undef $/;
1229                 print <$fd>;
1230                 $/ = "\n";
1231         } else {
1232                 while (my $line = <$fd>) {
1233                         chomp $line;
1234                         my $char = substr($line, 0, 1);
1235                         my $diff_class = "";
1236                         if ($char eq '+') {
1237                                 $diff_class = " add";
1238                         } elsif ($char eq "-") {
1239                                 $diff_class = " rem";
1240                         } elsif ($char eq "@") {
1241                                 $diff_class = " chunk_header";
1242                         } elsif ($char eq "\\") {
1243                                 # skip errors
1244                                 next;
1245                         }
1246                         while ((my $pos = index($line, "\t")) != -1) {
1247                                 if (my $count = (8 - (($pos-1) % 8))) {
1248                                         my $spaces = ' ' x $count;
1249                                         $line =~ s/\t/$spaces/;
1250                                 }
1251                         }
1252                         print "<div class=\"diff$diff_class\">" . esc_html($line) . "</div>\n";
1253                 }
1254         }
1255         close $fd;
1256
1257         if (defined $from) {
1258                 unlink($from_tmp);
1259         }
1260         if (defined $to) {
1261                 unlink($to_tmp);
1262         }
1263 }
1264
1265
1266 ## ======================================================================
1267 ## ======================================================================
1268 ## actions
1269
1270 # git-logo (cached in browser for one day)
1271 sub git_logo {
1272         binmode STDOUT, ':raw';
1273         print $cgi->header(-type => 'image/png', -expires => '+1d');
1274         # cat git-logo.png | hexdump -e '16/1 " %02x"  "\n"' | sed 's/ /\\x/g'
1275         print   "\x89\x50\x4e\x47\x0d\x0a\x1a\x0a\x00\x00\x00\x0d\x49\x48\x44\x52" .
1276                 "\x00\x00\x00\x48\x00\x00\x00\x1b\x04\x03\x00\x00\x00\x2d\xd9\xd4" .
1277                 "\x2d\x00\x00\x00\x18\x50\x4c\x54\x45\xff\xff\xff\x60\x60\x5d\xb0" .
1278                 "\xaf\xaa\x00\x80\x00\xce\xcd\xc7\xc0\x00\x00\xe8\xe8\xe6\xf7\xf7" .
1279                 "\xf6\x95\x0c\xa7\x47\x00\x00\x00\x73\x49\x44\x41\x54\x28\xcf\x63" .
1280                 "\x48\x67\x20\x04\x4a\x5c\x18\x0a\x08\x2a\x62\x53\x61\x20\x02\x08" .
1281                 "\x0d\x69\x45\xac\xa1\xa1\x01\x30\x0c\x93\x60\x36\x26\x52\x91\xb1" .
1282                 "\x01\x11\xd6\xe1\x55\x64\x6c\x6c\xcc\x6c\x6c\x0c\xa2\x0c\x70\x2a" .
1283                 "\x62\x06\x2a\xc1\x62\x1d\xb3\x01\x02\x53\xa4\x08\xe8\x00\x03\x18" .
1284                 "\x26\x56\x11\xd4\xe1\x20\x97\x1b\xe0\xb4\x0e\x35\x24\x71\x29\x82" .
1285                 "\x99\x30\xb8\x93\x0a\x11\xb9\x45\x88\xc1\x8d\xa0\xa2\x44\x21\x06" .
1286                 "\x27\x41\x82\x40\x85\xc1\x45\x89\x20\x70\x01\x00\xa4\x3d\x21\xc5" .
1287                 "\x12\x1c\x9a\xfe\x00\x00\x00\x00\x49\x45\x4e\x44\xae\x42\x60\x82";
1288 }
1289
1290 sub git_project_list {
1291         my $order = $cgi->param('o');
1292         if (defined $order && $order !~ m/project|descr|owner|age/) {
1293                 die_error(undef, "Invalid order parameter '$order'.");
1294         }
1295
1296         my @list = git_read_projects();
1297         my @projects;
1298         if (!@list) {
1299                 die_error(undef, "No projects found.");
1300         }
1301         foreach my $pr (@list) {
1302                 my $head = git_read_head($pr->{'path'});
1303                 if (!defined $head) {
1304                         next;
1305                 }
1306                 $ENV{'GIT_DIR'} = "$projectroot/$pr->{'path'}";
1307                 my %co = git_read_commit($head);
1308                 if (!%co) {
1309                         next;
1310                 }
1311                 $pr->{'commit'} = \%co;
1312                 if (!defined $pr->{'descr'}) {
1313                         my $descr = git_read_description($pr->{'path'}) || "";
1314                         $pr->{'descr'} = chop_str($descr, 25, 5);
1315                 }
1316                 if (!defined $pr->{'owner'}) {
1317                         $pr->{'owner'} = get_file_owner("$projectroot/$pr->{'path'}") || "";
1318                 }
1319                 push @projects, $pr;
1320         }
1321
1322         git_header_html();
1323         if (-f $home_text) {
1324                 print "<div class=\"index_include\">\n";
1325                 open (my $fd, $home_text);
1326                 print <$fd>;
1327                 close $fd;
1328                 print "</div>\n";
1329         }
1330         print "<table class=\"project_list\">\n" .
1331               "<tr>\n";
1332         $order ||= "project";
1333         if ($order eq "project") {
1334                 @projects = sort {$a->{'path'} cmp $b->{'path'}} @projects;
1335                 print "<th>Project</th>\n";
1336         } else {
1337                 print "<th>" .
1338                       $cgi->a({-href => "$my_uri?" . esc_param("o=project"),
1339                                -class => "header"}, "Project") .
1340                       "</th>\n";
1341         }
1342         if ($order eq "descr") {
1343                 @projects = sort {$a->{'descr'} cmp $b->{'descr'}} @projects;
1344                 print "<th>Description</th>\n";
1345         } else {
1346                 print "<th>" .
1347                       $cgi->a({-href => "$my_uri?" . esc_param("o=descr"),
1348                                -class => "header"}, "Description") .
1349                       "</th>\n";
1350         }
1351         if ($order eq "owner") {
1352                 @projects = sort {$a->{'owner'} cmp $b->{'owner'}} @projects;
1353                 print "<th>Owner</th>\n";
1354         } else {
1355                 print "<th>" .
1356                       $cgi->a({-href => "$my_uri?" . esc_param("o=owner"),
1357                                -class => "header"}, "Owner") .
1358                       "</th>\n";
1359         }
1360         if ($order eq "age") {
1361                 @projects = sort {$a->{'commit'}{'age'} <=> $b->{'commit'}{'age'}} @projects;
1362                 print "<th>Last Change</th>\n";
1363         } else {
1364                 print "<th>" .
1365                       $cgi->a({-href => "$my_uri?" . esc_param("o=age"),
1366                                -class => "header"}, "Last Change") .
1367                       "</th>\n";
1368         }
1369         print "<th></th>\n" .
1370               "</tr>\n";
1371         my $alternate = 0;
1372         foreach my $pr (@projects) {
1373                 if ($alternate) {
1374                         print "<tr class=\"dark\">\n";
1375                 } else {
1376                         print "<tr class=\"light\">\n";
1377                 }
1378                 $alternate ^= 1;
1379                 print "<td>" . $cgi->a({-href => "$my_uri?" . esc_param("p=$pr->{'path'};a=summary"),
1380                                         -class => "list"}, esc_html($pr->{'path'})) . "</td>\n" .
1381                       "<td>" . esc_html($pr->{'descr'}) . "</td>\n" .
1382                       "<td><i>" . chop_str($pr->{'owner'}, 15) . "</i></td>\n";
1383                 print "<td class=\"". age_class($pr->{'commit'}{'age'}) . "\">" .
1384                       $pr->{'commit'}{'age_string'} . "</td>\n" .
1385                       "<td class=\"link\">" .
1386                       $cgi->a({-href => "$my_uri?" . esc_param("p=$pr->{'path'};a=summary")}, "summary")   . " | " .
1387                       $cgi->a({-href => "$my_uri?" . esc_param("p=$pr->{'path'};a=shortlog")}, "shortlog") . " | " .
1388                       $cgi->a({-href => "$my_uri?" . esc_param("p=$pr->{'path'};a=log")}, "log") .
1389                       "</td>\n" .
1390                       "</tr>\n";
1391         }
1392         print "</table>\n";
1393         git_footer_html();
1394 }
1395
1396 sub git_summary {
1397         my $descr = git_read_description($project) || "none";
1398         my $head = git_read_head($project);
1399         my %co = git_read_commit($head);
1400         my %cd = date_str($co{'committer_epoch'}, $co{'committer_tz'});
1401
1402         my $owner;
1403         if (-f $projects_list) {
1404                 open (my $fd , $projects_list);
1405                 while (my $line = <$fd>) {
1406                         chomp $line;
1407                         my ($pr, $ow) = split ' ', $line;
1408                         $pr = unescape($pr);
1409                         $ow = unescape($ow);
1410                         if ($pr eq $project) {
1411                                 $owner = decode("utf8", $ow, Encode::FB_DEFAULT);
1412                                 last;
1413                         }
1414                 }
1415                 close $fd;
1416         }
1417         if (!defined $owner) {
1418                 $owner = get_file_owner("$projectroot/$project");
1419         }
1420
1421         my $refs = read_info_ref();
1422         git_header_html();
1423         git_page_nav('summary','', $head);
1424
1425         print "<div class=\"title\">&nbsp;</div>\n";
1426         print "<table cellspacing=\"0\">\n" .
1427               "<tr><td>description</td><td>" . esc_html($descr) . "</td></tr>\n" .
1428               "<tr><td>owner</td><td>$owner</td></tr>\n" .
1429               "<tr><td>last change</td><td>$cd{'rfc2822'}</td></tr>\n" .
1430               "</table>\n";
1431
1432         open my $fd, "-|", $GIT, "rev-list", "--max-count=17", git_read_head($project)
1433                 or die_error(undef, "Open git-rev-list failed.");
1434         my @revlist = map { chomp; $_ } <$fd>;
1435         close $fd;
1436         git_header_div('shortlog');
1437         git_shortlog_body(\@revlist, 0, 15, $refs,
1438                           $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=shortlog")}, "..."));
1439
1440         my $taglist = git_read_refs("refs/tags");
1441         if (defined @$taglist) {
1442                 git_header_div('tags');
1443                 git_tags_body($taglist, 0, 15,
1444                               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=tags")}, "..."));
1445         }
1446
1447         my $headlist = git_read_refs("refs/heads");
1448         if (defined @$headlist) {
1449                 git_header_div('heads');
1450                 git_heads_body($headlist, $head, 0, 15,
1451                                $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=heads")}, "..."));
1452         }
1453
1454         git_footer_html();
1455 }
1456
1457 sub git_tag {
1458         my $head = git_read_head($project);
1459         git_header_html();
1460         git_page_nav('','', $head,undef,$head);
1461         my %tag = git_read_tag($hash);
1462         git_header_div('commit', esc_html($tag{'name'}), $hash);
1463         print "<div class=\"title_text\">\n" .
1464               "<table cellspacing=\"0\">\n" .
1465               "<tr>\n" .
1466               "<td>object</td>\n" .
1467               "<td>" . $cgi->a({-class => "list", -href => "$my_uri?" . esc_param("p=$project;a=$tag{'type'};h=$tag{'object'}")}, $tag{'object'}) . "</td>\n" .
1468               "<td class=\"link\">" . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=$tag{'type'};h=$tag{'object'}")}, $tag{'type'}) . "</td>\n" .
1469               "</tr>\n";
1470         if (defined($tag{'author'})) {
1471                 my %ad = date_str($tag{'epoch'}, $tag{'tz'});
1472                 print "<tr><td>author</td><td>" . esc_html($tag{'author'}) . "</td></tr>\n";
1473                 print "<tr><td></td><td>" . $ad{'rfc2822'} . sprintf(" (%02d:%02d %s)", $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'}) . "</td></tr>\n";
1474         }
1475         print "</table>\n\n" .
1476               "</div>\n";
1477         print "<div class=\"page_body\">";
1478         my $comment = $tag{'comment'};
1479         foreach my $line (@$comment) {
1480                 print esc_html($line) . "<br/>\n";
1481         }
1482         print "</div>\n";
1483         git_footer_html();
1484 }
1485
1486 sub git_blame2 {
1487         my $fd;
1488         my $ftype;
1489         die_error(undef, "Permission denied.") if (!git_get_project_config_bool ('blame'));
1490         die_error('404 Not Found', "File name not defined") if (!$file_name);
1491         $hash_base ||= git_read_head($project);
1492         die_error(undef, "Reading commit failed") unless ($hash_base);
1493         my %co = git_read_commit($hash_base)
1494                 or die_error(undef, "Reading commit failed");
1495         if (!defined $hash) {
1496                 $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
1497                         or die_error(undef, "Error looking up file");
1498         }
1499         $ftype = git_get_type($hash);
1500         if ($ftype !~ "blob") {
1501                 die_error("400 Bad Request", "object is not a blob");
1502         }
1503         open ($fd, "-|", $GIT, "blame", '-l', $file_name, $hash_base)
1504                 or die_error(undef, "Open git-blame failed.");
1505         git_header_html();
1506         my $formats_nav =
1507                 $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;h=$hash;hb=$hash_base;f=$file_name")}, "blob") .
1508                 " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blame;f=$file_name")}, "head");
1509         git_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
1510         git_header_div('commit', esc_html($co{'title'}), $hash_base);
1511         git_print_page_path($file_name, $ftype);
1512         my @rev_color = (qw(light dark));
1513         my $num_colors = scalar(@rev_color);
1514         my $current_color = 0;
1515         my $last_rev;
1516         print "<div class=\"page_body\">\n";
1517         print "<table class=\"blame\">\n";
1518         print "<tr><th>Commit</th><th>Line</th><th>Data</th></tr>\n";
1519         while (<$fd>) {
1520                 /^([0-9a-fA-F]{40}).*?(\d+)\)\s{1}(\s*.*)/;
1521                 my $full_rev = $1;
1522                 my $rev = substr($full_rev, 0, 8);
1523                 my $lineno = $2;
1524                 my $data = $3;
1525
1526                 if (!defined $last_rev) {
1527                         $last_rev = $full_rev;
1528                 } elsif ($last_rev ne $full_rev) {
1529                         $last_rev = $full_rev;
1530                         $current_color = ++$current_color % $num_colors;
1531                 }
1532                 print "<tr class=\"$rev_color[$current_color]\">\n";
1533                 print "<td class=\"sha1\">" .
1534                         $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commit;h=$full_rev;f=$file_name")}, esc_html($rev)) . "</td>\n";
1535                 print "<td class=\"linenr\"><a id=\"l$lineno\" href=\"#l$lineno\" class=\"linenr\">" . esc_html($lineno) . "</a></td>\n";
1536                 print "<td class=\"pre\">" . esc_html($data) . "</td>\n";
1537                 print "</tr>\n";
1538         }
1539         print "</table>\n";
1540         print "</div>";
1541         close $fd or print "Reading blob failed\n";
1542         git_footer_html();
1543 }
1544
1545 sub git_blame {
1546         my $fd;
1547         die_error('403 Permission denied', "Permission denied.") if (!git_get_project_config_bool ('blame'));
1548         die_error('404 Not Found', "What file will it be, master?") if (!$file_name);
1549         $hash_base ||= git_read_head($project);
1550         die_error(undef, "Reading commit failed.") unless ($hash_base);
1551         my %co = git_read_commit($hash_base)
1552                 or die_error(undef, "Reading commit failed.");
1553         if (!defined $hash) {
1554                 $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
1555                         or die_error(undef, "Error lookup file.");
1556         }
1557         open ($fd, "-|", $GIT, "annotate", '-l', '-t', '-r', $file_name, $hash_base)
1558                 or die_error(undef, "Open git-annotate failed.");
1559         git_header_html();
1560         my $formats_nav =
1561                 $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;h=$hash;hb=$hash_base;f=$file_name")}, "blob") .
1562                 " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blame;f=$file_name")}, "head");
1563         git_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
1564         git_header_div('commit', esc_html($co{'title'}), $hash_base);
1565         git_print_page_path($file_name, 'blob');
1566         print "<div class=\"page_body\">\n";
1567         print <<HTML;
1568 <table class="blame">
1569   <tr>
1570     <th>Commit</th>
1571     <th>Age</th>
1572     <th>Author</th>
1573     <th>Line</th>
1574     <th>Data</th>
1575   </tr>
1576 HTML
1577         my @line_class = (qw(light dark));
1578         my $line_class_len = scalar (@line_class);
1579         my $line_class_num = $#line_class;
1580         while (my $line = <$fd>) {
1581                 my $long_rev;
1582                 my $short_rev;
1583                 my $author;
1584                 my $time;
1585                 my $lineno;
1586                 my $data;
1587                 my $age;
1588                 my $age_str;
1589                 my $age_class;
1590
1591                 chomp $line;
1592                 $line_class_num = ($line_class_num + 1) % $line_class_len;
1593
1594                 if ($line =~ m/^([0-9a-fA-F]{40})\t\(\s*([^\t]+)\t(\d+) \+\d\d\d\d\t(\d+)\)(.*)$/) {
1595                         $long_rev = $1;
1596                         $author   = $2;
1597                         $time     = $3;
1598                         $lineno   = $4;
1599                         $data     = $5;
1600                 } else {
1601                         print qq(  <tr><td colspan="5" class="error">Unable to parse: $line</td></tr>\n);
1602                         next;
1603                 }
1604                 $short_rev  = substr ($long_rev, 0, 8);
1605                 $age        = time () - $time;
1606                 $age_str    = age_string ($age);
1607                 $age_str    =~ s/ /&nbsp;/g;
1608                 $age_class  = age_class($age);
1609                 $author     = esc_html ($author);
1610                 $author     =~ s/ /&nbsp;/g;
1611                 # escape tabs
1612                 while ((my $pos = index($data, "\t")) != -1) {
1613                         if (my $count = (8 - ($pos % 8))) {
1614                                 my $spaces = ' ' x $count;
1615                                 $data =~ s/\t/$spaces/;
1616                         }
1617                 }
1618                 $data = esc_html ($data);
1619
1620                 print <<HTML;
1621   <tr class="$line_class[$line_class_num]">
1622     <td class="sha1"><a href="$my_uri?${\esc_param ("p=$project;a=commit;h=$long_rev")}" class="text">$short_rev..</a></td>
1623     <td class="$age_class">$age_str</td>
1624     <td>$author</td>
1625     <td class="linenr"><a id="$lineno" href="#$lineno" class="linenr">$lineno</a></td>
1626     <td class="pre">$data</td>
1627   </tr>
1628 HTML
1629         } # while (my $line = <$fd>)
1630         print "</table>\n\n";
1631         close $fd or print "Reading blob failed.\n";
1632         print "</div>";
1633         git_footer_html();
1634 }
1635
1636 sub git_tags {
1637         my $head = git_read_head($project);
1638         git_header_html();
1639         git_page_nav('','', $head,undef,$head);
1640         git_header_div('summary', $project);
1641
1642         my $taglist = git_read_refs("refs/tags");
1643         if (defined @$taglist) {
1644                 git_tags_body($taglist);
1645         }
1646         git_footer_html();
1647 }
1648
1649 sub git_heads {
1650         my $head = git_read_head($project);
1651         git_header_html();
1652         git_page_nav('','', $head,undef,$head);
1653         git_header_div('summary', $project);
1654
1655         my $taglist = git_read_refs("refs/heads");
1656         my $alternate = 0;
1657         if (defined @$taglist) {
1658                 git_heads_body($taglist, $head);
1659         }
1660         git_footer_html();
1661 }
1662
1663 sub git_blob_plain {
1664         if (!defined $hash) {
1665                 if (defined $file_name) {
1666                         my $base = $hash_base || git_read_head($project);
1667                         $hash = git_get_hash_by_path($base, $file_name, "blob")
1668                                 or die_error(undef, "Error lookup file.");
1669                 } else {
1670                         die_error(undef, "No file name defined.");
1671                 }
1672         }
1673         my $type = shift;
1674         open my $fd, "-|", $GIT, "cat-file", "blob", $hash
1675                 or die_error("Couldn't cat $file_name, $hash");
1676
1677         $type ||= git_blob_plain_mimetype($fd, $file_name);
1678
1679         # save as filename, even when no $file_name is given
1680         my $save_as = "$hash";
1681         if (defined $file_name) {
1682                 $save_as = $file_name;
1683         } elsif ($type =~ m/^text\//) {
1684                 $save_as .= '.txt';
1685         }
1686
1687         print $cgi->header(-type => "$type", '-content-disposition' => "inline; filename=\"$save_as\"");
1688         undef $/;
1689         binmode STDOUT, ':raw';
1690         print <$fd>;
1691         binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
1692         $/ = "\n";
1693         close $fd;
1694 }
1695
1696 sub git_blob {
1697         if (!defined $hash) {
1698                 if (defined $file_name) {
1699                         my $base = $hash_base || git_read_head($project);
1700                         $hash = git_get_hash_by_path($base, $file_name, "blob")
1701                                 or die_error(undef, "Error lookup file.");
1702                 } else {
1703                         die_error(undef, "No file name defined.");
1704                 }
1705         }
1706         my $have_blame = git_get_project_config_bool ('blame');
1707         open my $fd, "-|", $GIT, "cat-file", "blob", $hash
1708                 or die_error(undef, "Couldn't cat $file_name, $hash.");
1709         my $mimetype = git_blob_plain_mimetype($fd, $file_name);
1710         if ($mimetype !~ m/^text\//) {
1711                 close $fd;
1712                 return git_blob_plain($mimetype);
1713         }
1714         git_header_html();
1715         my $formats_nav = '';
1716         if (defined $hash_base && (my %co = git_read_commit($hash_base))) {
1717                 if (defined $file_name) {
1718                         if ($have_blame) {
1719                                 $formats_nav .= $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blame;h=$hash;hb=$hash_base;f=$file_name")}, "blame") . " | ";
1720                         }
1721                         $formats_nav .=
1722                                 $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob_plain;h=$hash;f=$file_name")}, "plain") .
1723                                 " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;hb=HEAD;f=$file_name")}, "head");
1724                 } else {
1725                         $formats_nav .= $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob_plain;h=$hash")}, "plain");
1726                 }
1727                 git_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
1728                 git_header_div('commit', esc_html($co{'title'}), $hash_base);
1729         } else {
1730                 print "<div class=\"page_nav\">\n" .
1731                       "<br/><br/></div>\n" .
1732                       "<div class=\"title\">$hash</div>\n";
1733         }
1734         git_print_page_path($file_name, "blob");
1735         print "<div class=\"page_body\">\n";
1736         my $nr;
1737         while (my $line = <$fd>) {
1738                 chomp $line;
1739                 $nr++;
1740                 while ((my $pos = index($line, "\t")) != -1) {
1741                         if (my $count = (8 - ($pos % 8))) {
1742                                 my $spaces = ' ' x $count;
1743                                 $line =~ s/\t/$spaces/;
1744                         }
1745                 }
1746                 printf "<div class=\"pre\"><a id=\"l%i\" href=\"#l%i\" class=\"linenr\">%4i</a> %s</div>\n", $nr, $nr, $nr, esc_html($line);
1747         }
1748         close $fd or print "Reading blob failed.\n";
1749         print "</div>";
1750         git_footer_html();
1751 }
1752
1753 sub git_tree {
1754         if (!defined $hash) {
1755                 $hash = git_read_head($project);
1756                 if (defined $file_name) {
1757                         my $base = $hash_base || $hash;
1758                         $hash = git_get_hash_by_path($base, $file_name, "tree");
1759                 }
1760                 if (!defined $hash_base) {
1761                         $hash_base = $hash;
1762                 }
1763         }
1764         $/ = "\0";
1765         open my $fd, "-|", $GIT, "ls-tree", '-z', $hash
1766                 or die_error(undef, "Open git-ls-tree failed.");
1767         my @entries = map { chomp; $_ } <$fd>;
1768         close $fd or die_error(undef, "Reading tree failed.");
1769         $/ = "\n";
1770
1771         my $refs = read_info_ref();
1772         my $ref = git_get_referencing($refs, $hash_base);
1773         git_header_html();
1774         my $base_key = "";
1775         my $base = "";
1776         if (defined $hash_base && (my %co = git_read_commit($hash_base))) {
1777                 $base_key = ";hb=$hash_base";
1778                 git_page_nav('tree','', $hash_base);
1779                 git_header_div('commit', esc_html($co{'title'}) . $ref, $hash_base);
1780         } else {
1781                 print "<div class=\"page_nav\">\n";
1782                 print "<br/><br/></div>\n";
1783                 print "<div class=\"title\">$hash</div>\n";
1784         }
1785         if (defined $file_name) {
1786                 $base = esc_html("$file_name/");
1787         }
1788         git_print_page_path($file_name, 'tree');
1789         print "<div class=\"page_body\">\n";
1790         print "<table cellspacing=\"0\">\n";
1791         my $alternate = 0;
1792         foreach my $line (@entries) {
1793                 #'100644        blob    0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa        panic.c'
1794                 $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t(.+)$/;
1795                 my $t_mode = $1;
1796                 my $t_type = $2;
1797                 my $t_hash = $3;
1798                 my $t_name = validate_input($4);
1799                 if ($alternate) {
1800                         print "<tr class=\"dark\">\n";
1801                 } else {
1802                         print "<tr class=\"light\">\n";
1803                 }
1804                 $alternate ^= 1;
1805                 print "<td class=\"mode\">" . mode_str($t_mode) . "</td>\n";
1806                 if ($t_type eq "blob") {
1807                         print "<td class=\"list\">" .
1808                               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;h=$t_hash$base_key;f=$base$t_name"), -class => "list"}, esc_html($t_name)) .
1809                               "</td>\n" .
1810                               "<td class=\"link\">" .
1811                               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;h=$t_hash$base_key;f=$base$t_name")}, "blob") .
1812 #                             " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blame;h=$t_hash$base_key;f=$base$t_name")}, "blame") .
1813                               " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=history;h=$t_hash;hb=$hash_base;f=$base$t_name")}, "history") .
1814                               " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob_plain;h=$t_hash;f=$base$t_name")}, "raw") .
1815                               "</td>\n";
1816                 } elsif ($t_type eq "tree") {
1817                         print "<td class=\"list\">" .
1818                               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=tree;h=$t_hash$base_key;f=$base$t_name")}, esc_html($t_name)) .
1819                               "</td>\n" .
1820                               "<td class=\"link\">" .
1821                               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=tree;h=$t_hash$base_key;f=$base$t_name")}, "tree") .
1822                               " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=history;hb=$hash_base;f=$base$t_name")}, "history") .
1823                               "</td>\n";
1824                 }
1825                 print "</tr>\n";
1826         }
1827         print "</table>\n" .
1828               "</div>";
1829         git_footer_html();
1830 }
1831
1832 sub git_log {
1833         my $head = git_read_head($project);
1834         if (!defined $hash) {
1835                 $hash = $head;
1836         }
1837         if (!defined $page) {
1838                 $page = 0;
1839         }
1840         my $refs = read_info_ref();
1841
1842         my $limit = sprintf("--max-count=%i", (100 * ($page+1)));
1843         open my $fd, "-|", $GIT, "rev-list", $limit, $hash
1844                 or die_error(undef, "Open git-rev-list failed.");
1845         my @revlist = map { chomp; $_ } <$fd>;
1846         close $fd;
1847
1848         my $paging_nav = git_get_paging_nav('log', $hash, $head, $page, $#revlist);
1849
1850         git_header_html();
1851         git_page_nav('log','', $hash,undef,undef, $paging_nav);
1852
1853         if (!@revlist) {
1854                 my %co = git_read_commit($hash);
1855
1856                 git_header_div('summary', $project);
1857                 print "<div class=\"page_body\"> Last change $co{'age_string'}.<br/><br/></div>\n";
1858         }
1859         for (my $i = ($page * 100); $i <= $#revlist; $i++) {
1860                 my $commit = $revlist[$i];
1861                 my $ref = git_get_referencing($refs, $commit);
1862                 my %co = git_read_commit($commit);
1863                 next if !%co;
1864                 my %ad = date_str($co{'author_epoch'});
1865                 git_header_div('commit',
1866                                                                          "<span class=\"age\">$co{'age_string'}</span>" .
1867                                                                          esc_html($co{'title'}) . $ref,
1868                                                                          $commit);
1869                 print "<div class=\"title_text\">\n" .
1870                       "<div class=\"log_link\">\n" .
1871                       $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commit;h=$commit")}, "commit") .
1872                       " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commitdiff;h=$commit")}, "commitdiff") .
1873                       "<br/>\n" .
1874                       "</div>\n" .
1875                       "<i>" . esc_html($co{'author_name'}) .  " [$ad{'rfc2822'}]</i><br/>\n" .
1876                       "</div>\n" .
1877                       "<div class=\"log_body\">\n";
1878                 my $comment = $co{'comment'};
1879                 my $empty = 0;
1880                 foreach my $line (@$comment) {
1881                         if ($line =~ m/^ *(signed[ \-]off[ \-]by[ :]|acked[ \-]by[ :]|cc[ :])/i) {
1882                                 next;
1883                         }
1884                         if ($line eq "") {
1885                                 if ($empty) {
1886                                         next;
1887                                 }
1888                                 $empty = 1;
1889                         } else {
1890                                 $empty = 0;
1891                         }
1892                         print format_log_line_html($line) . "<br/>\n";
1893                 }
1894                 if (!$empty) {
1895                         print "<br/>\n";
1896                 }
1897                 print "</div>\n";
1898         }
1899         git_footer_html();
1900 }
1901
1902 sub git_commit {
1903         my %co = git_read_commit($hash);
1904         if (!%co) {
1905                 die_error(undef, "Unknown commit object.");
1906         }
1907         my %ad = date_str($co{'author_epoch'}, $co{'author_tz'});
1908         my %cd = date_str($co{'committer_epoch'}, $co{'committer_tz'});
1909
1910         my $parent = $co{'parent'};
1911         if (!defined $parent) {
1912                 $parent = "--root";
1913         }
1914         open my $fd, "-|", $GIT, "diff-tree", '-r', '-M', $parent, $hash
1915                 or die_error(undef, "Open git-diff-tree failed.");
1916         my @difftree = map { chomp; $_ } <$fd>;
1917         close $fd or die_error(undef, "Reading git-diff-tree failed.");
1918
1919         # non-textual hash id's can be cached
1920         my $expires;
1921         if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
1922                 $expires = "+1d";
1923         }
1924         my $refs = read_info_ref();
1925         my $ref = git_get_referencing($refs, $co{'id'});
1926         my $formats_nav = '';
1927         if (defined $file_name && defined $co{'parent'}) {
1928                 my $parent = $co{'parent'};
1929                 $formats_nav .= $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blame;hb=$parent;f=$file_name")}, "blame");
1930         }
1931         git_header_html(undef, $expires);
1932         git_page_nav('commit', defined $co{'parent'} ? '' : 'commitdiff',
1933                                                          $hash, $co{'tree'}, $hash,
1934                                                          $formats_nav);
1935
1936         if (defined $co{'parent'}) {
1937                 git_header_div('commitdiff', esc_html($co{'title'}) . $ref, $hash);
1938         } else {
1939                 git_header_div('tree', esc_html($co{'title'}) . $ref, $co{'tree'}, $hash);
1940         }
1941         print "<div class=\"title_text\">\n" .
1942               "<table cellspacing=\"0\">\n";
1943         print "<tr><td>author</td><td>" . esc_html($co{'author'}) . "</td></tr>\n".
1944               "<tr>" .
1945               "<td></td><td> $ad{'rfc2822'}";
1946         if ($ad{'hour_local'} < 6) {
1947                 printf(" (<span class=\"atnight\">%02d:%02d</span> %s)", $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
1948         } else {
1949                 printf(" (%02d:%02d %s)", $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
1950         }
1951         print "</td>" .
1952               "</tr>\n";
1953         print "<tr><td>committer</td><td>" . esc_html($co{'committer'}) . "</td></tr>\n";
1954         print "<tr><td></td><td> $cd{'rfc2822'}" . sprintf(" (%02d:%02d %s)", $cd{'hour_local'}, $cd{'minute_local'}, $cd{'tz_local'}) . "</td></tr>\n";
1955         print "<tr><td>commit</td><td class=\"sha1\">$co{'id'}</td></tr>\n";
1956         print "<tr>" .
1957               "<td>tree</td>" .
1958               "<td class=\"sha1\">" .
1959               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=tree;h=$co{'tree'};hb=$hash"), class => "list"}, $co{'tree'}) .
1960               "</td>" .
1961               "<td class=\"link\">" . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=tree;h=$co{'tree'};hb=$hash")}, "tree") .
1962               "</td>" .
1963               "</tr>\n";
1964         my $parents = $co{'parents'};
1965         foreach my $par (@$parents) {
1966                 print "<tr>" .
1967                       "<td>parent</td>" .
1968                       "<td class=\"sha1\">" . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commit;h=$par"), class => "list"}, $par) . "</td>" .
1969                       "<td class=\"link\">" .
1970                       $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commit;h=$par")}, "commit") .
1971                       " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commitdiff;h=$hash;hp=$par")}, "commitdiff") .
1972                       "</td>" .
1973                       "</tr>\n";
1974         }
1975         print "</table>".
1976               "</div>\n";
1977         print "<div class=\"page_body\">\n";
1978         my $comment = $co{'comment'};
1979         my $empty = 0;
1980         my $signed = 0;
1981         foreach my $line (@$comment) {
1982                 # print only one empty line
1983                 if ($line eq "") {
1984                         if ($empty || $signed) {
1985                                 next;
1986                         }
1987                         $empty = 1;
1988                 } else {
1989                         $empty = 0;
1990                 }
1991                 if ($line =~ m/^ *(signed[ \-]off[ \-]by[ :]|acked[ \-]by[ :]|cc[ :])/i) {
1992                         $signed = 1;
1993                         print "<span class=\"signoff\">" . esc_html($line) . "</span><br/>\n";
1994                 } else {
1995                         $signed = 0;
1996                         print format_log_line_html($line) . "<br/>\n";
1997                 }
1998         }
1999         print "</div>\n";
2000         print "<div class=\"list_head\">\n";
2001         if ($#difftree > 10) {
2002                 print(($#difftree + 1) . " files changed:\n");
2003         }
2004         print "</div>\n";
2005         print "<table class=\"diff_tree\">\n";
2006         my $alternate = 0;
2007         foreach my $line (@difftree) {
2008                 # ':100644 100644 03b218260e99b78c6df0ed378e59ed9205ccc96d 3b93d5e7cc7f7dd4ebed13a5cc1a4ad976fc94d8 M      ls-files.c'
2009                 # ':100644 100644 7f9281985086971d3877aca27704f2aaf9c448ce bc190ebc71bbd923f2b728e505408f5e54bd073a M      rev-tree.c'
2010                 if (!($line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)([0-9]{0,3})\t(.*)$/)) {
2011                         next;
2012                 }
2013                 my $from_mode = $1;
2014                 my $to_mode = $2;
2015                 my $from_id = $3;
2016                 my $to_id = $4;
2017                 my $status = $5;
2018                 my $similarity = $6;
2019                 my $file = validate_input(unquote($7));
2020                 if ($alternate) {
2021                         print "<tr class=\"dark\">\n";
2022                 } else {
2023                         print "<tr class=\"light\">\n";
2024                 }
2025                 $alternate ^= 1;
2026                 if ($status eq "A") {
2027                         my $mode_chng = "";
2028                         if (S_ISREG(oct $to_mode)) {
2029                                 $mode_chng = sprintf(" with mode: %04o", (oct $to_mode) & 0777);
2030                         }
2031                         print "<td>" .
2032                               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;h=$to_id;hb=$hash;f=$file"), -class => "list"}, esc_html($file)) . "</td>\n" .
2033                               "<td><span class=\"file_status new\">[new " . file_type($to_mode) . "$mode_chng]</span></td>\n" .
2034                               "<td class=\"link\">" . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;h=$to_id;hb=$hash;f=$file")}, "blob") . "</td>\n";
2035                 } elsif ($status eq "D") {
2036                         print "<td>" .
2037                               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;h=$from_id;hb=$hash;f=$file"), -class => "list"}, esc_html($file)) . "</td>\n" .
2038                               "<td><span class=\"file_status deleted\">[deleted " . file_type($from_mode). "]</span></td>\n" .
2039                               "<td class=\"link\">" .
2040                               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;h=$from_id;hb=$hash;f=$file")}, "blob") .
2041                               " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=history;hb=$hash;f=$file")}, "history") .
2042                               "</td>\n"
2043                 } elsif ($status eq "M" || $status eq "T") {
2044                         my $mode_chnge = "";
2045                         if ($from_mode != $to_mode) {
2046                                 $mode_chnge = " <span class=\"file_status mode_chnge\">[changed";
2047                                 if (((oct $from_mode) & S_IFMT) != ((oct $to_mode) & S_IFMT)) {
2048                                         $mode_chnge .= " from " . file_type($from_mode) . " to " . file_type($to_mode);
2049                                 }
2050                                 if (((oct $from_mode) & 0777) != ((oct $to_mode) & 0777)) {
2051                                         if (S_ISREG($from_mode) && S_ISREG($to_mode)) {
2052                                                 $mode_chnge .= sprintf(" mode: %04o->%04o", (oct $from_mode) & 0777, (oct $to_mode) & 0777);
2053                                         } elsif (S_ISREG($to_mode)) {
2054                                                 $mode_chnge .= sprintf(" mode: %04o", (oct $to_mode) & 0777);
2055                                         }
2056                                 }
2057                                 $mode_chnge .= "]</span>\n";
2058                         }
2059                         print "<td>";
2060                         if ($to_id ne $from_id) {
2061                                 print $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blobdiff;h=$to_id;hp=$from_id;hb=$hash;f=$file"), -class => "list"}, esc_html($file));
2062                         } else {
2063                                 print $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;h=$to_id;hb=$hash;f=$file"), -class => "list"}, esc_html($file));
2064                         }
2065                         print "</td>\n" .
2066                               "<td>$mode_chnge</td>\n" .
2067                               "<td class=\"link\">";
2068                         print $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;h=$to_id;hb=$hash;f=$file")}, "blob");
2069                         if ($to_id ne $from_id) {
2070                                 print " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blobdiff;h=$to_id;hp=$from_id;hb=$hash;f=$file")}, "diff");
2071                         }
2072                         print " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=history;hb=$hash;f=$file")}, "history") . "\n";
2073                         print "</td>\n";
2074                 } elsif ($status eq "R") {
2075                         my ($from_file, $to_file) = split "\t", $file;
2076                         my $mode_chng = "";
2077                         if ($from_mode != $to_mode) {
2078                                 $mode_chng = sprintf(", mode: %04o", (oct $to_mode) & 0777);
2079                         }
2080                         print "<td>" .
2081                               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;h=$to_id;hb=$hash;f=$to_file"), -class => "list"}, esc_html($to_file)) . "</td>\n" .
2082                               "<td><span class=\"file_status moved\">[moved from " .
2083                               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;h=$from_id;hb=$hash;f=$from_file"), -class => "list"}, esc_html($from_file)) .
2084                               " with " . (int $similarity) . "% similarity$mode_chng]</span></td>\n" .
2085                               "<td class=\"link\">" .
2086                               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;h=$to_id;hb=$hash;f=$to_file")}, "blob");
2087                         if ($to_id ne $from_id) {
2088                                 print " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blobdiff;h=$to_id;hp=$from_id;hb=$hash;f=$to_file")}, "diff");
2089                         }
2090                         print "</td>\n";
2091                 }
2092                 print "</tr>\n";
2093         }
2094         print "</table>\n";
2095         git_footer_html();
2096 }
2097
2098 sub git_blobdiff {
2099         mkdir($git_temp, 0700);
2100         git_header_html();
2101         if (defined $hash_base && (my %co = git_read_commit($hash_base))) {
2102                 my $formats_nav =
2103                         $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blobdiff_plain;h=$hash;hp=$hash_parent")}, "plain");
2104                 git_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
2105                 git_header_div('commit', esc_html($co{'title'}), $hash_base);
2106         } else {
2107                 print "<div class=\"page_nav\">\n" .
2108                       "<br/><br/></div>\n" .
2109                       "<div class=\"title\">$hash vs $hash_parent</div>\n";
2110         }
2111         git_print_page_path($file_name, "blob");
2112         print "<div class=\"page_body\">\n" .
2113               "<div class=\"diff_info\">blob:" .
2114               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;h=$hash_parent;hb=$hash_base;f=$file_name")}, $hash_parent) .
2115               " -> blob:" .
2116               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;h=$hash;hb=$hash_base;f=$file_name")}, $hash) .
2117               "</div>\n";
2118         git_diff_print($hash_parent, $file_name || $hash_parent, $hash, $file_name || $hash);
2119         print "</div>";
2120         git_footer_html();
2121 }
2122
2123 sub git_blobdiff_plain {
2124         mkdir($git_temp, 0700);
2125         print $cgi->header(-type => "text/plain", -charset => 'utf-8');
2126         git_diff_print($hash_parent, $file_name || $hash_parent, $hash, $file_name || $hash, "plain");
2127 }
2128
2129 sub git_commitdiff {
2130         mkdir($git_temp, 0700);
2131         my %co = git_read_commit($hash);
2132         if (!%co) {
2133                 die_error(undef, "Unknown commit object.");
2134         }
2135         if (!defined $hash_parent) {
2136                 $hash_parent = $co{'parent'};
2137         }
2138         open my $fd, "-|", $GIT, "diff-tree", '-r', $hash_parent, $hash
2139                 or die_error(undef, "Open git-diff-tree failed.");
2140         my @difftree = map { chomp; $_ } <$fd>;
2141         close $fd or die_error(undef, "Reading diff-tree failed.");
2142
2143         # non-textual hash id's can be cached
2144         my $expires;
2145         if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
2146                 $expires = "+1d";
2147         }
2148         my $refs = read_info_ref();
2149         my $ref = git_get_referencing($refs, $co{'id'});
2150         my $formats_nav =
2151                 $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commitdiff_plain;h=$hash;hp=$hash_parent")}, "plain");
2152         git_header_html(undef, $expires);
2153         git_page_nav('commitdiff','', $hash,$co{'tree'},$hash, $formats_nav);
2154         git_header_div('commit', esc_html($co{'title'}) . $ref, $hash);
2155         print "<div class=\"page_body\">\n";
2156         my $comment = $co{'comment'};
2157         my $empty = 0;
2158         my $signed = 0;
2159         my @log = @$comment;
2160         # remove first and empty lines after that
2161         shift @log;
2162         while (defined $log[0] && $log[0] eq "") {
2163                 shift @log;
2164         }
2165         foreach my $line (@log) {
2166                 if ($line =~ m/^ *(signed[ \-]off[ \-]by[ :]|acked[ \-]by[ :]|cc[ :])/i) {
2167                         next;
2168                 }
2169                 if ($line eq "") {
2170                         if ($empty) {
2171                                 next;
2172                         }
2173                         $empty = 1;
2174                 } else {
2175                         $empty = 0;
2176                 }
2177                 print format_log_line_html($line) . "<br/>\n";
2178         }
2179         print "<br/>\n";
2180         foreach my $line (@difftree) {
2181                 # ':100644 100644 03b218260e99b78c6df0ed378e59ed9205ccc96d 3b93d5e7cc7f7dd4ebed13a5cc1a4ad976fc94d8 M      ls-files.c'
2182                 # ':100644 100644 7f9281985086971d3877aca27704f2aaf9c448ce bc190ebc71bbd923f2b728e505408f5e54bd073a M      rev-tree.c'
2183                 $line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)\t(.*)$/;
2184                 my $from_mode = $1;
2185                 my $to_mode = $2;
2186                 my $from_id = $3;
2187                 my $to_id = $4;
2188                 my $status = $5;
2189                 my $file = validate_input(unquote($6));
2190                 if ($status eq "A") {
2191                         print "<div class=\"diff_info\">" . file_type($to_mode) . ":" .
2192                               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;h=$to_id;hb=$hash;f=$file")}, $to_id) . "(new)" .
2193                               "</div>\n";
2194                         git_diff_print(undef, "/dev/null", $to_id, "b/$file");
2195                 } elsif ($status eq "D") {
2196                         print "<div class=\"diff_info\">" . file_type($from_mode) . ":" .
2197                               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;h=$from_id;hb=$hash;f=$file")}, $from_id) . "(deleted)" .
2198                               "</div>\n";
2199                         git_diff_print($from_id, "a/$file", undef, "/dev/null");
2200                 } elsif ($status eq "M") {
2201                         if ($from_id ne $to_id) {
2202                                 print "<div class=\"diff_info\">" .
2203                                       file_type($from_mode) . ":" . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;h=$from_id;hb=$hash;f=$file")}, $from_id) .
2204                                       " -> " .
2205                                       file_type($to_mode) . ":" . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;h=$to_id;hb=$hash;f=$file")}, $to_id);
2206                                 print "</div>\n";
2207                                 git_diff_print($from_id, "a/$file",  $to_id, "b/$file");
2208                         }
2209                 }
2210         }
2211         print "<br/>\n" .
2212               "</div>";
2213         git_footer_html();
2214 }
2215
2216 sub git_commitdiff_plain {
2217         mkdir($git_temp, 0700);
2218         open my $fd, "-|", $GIT, "diff-tree", '-r', $hash_parent, $hash
2219                 or die_error(undef, "Open git-diff-tree failed.");
2220         my @difftree = map { chomp; $_ } <$fd>;
2221         close $fd or die_error(undef, "Reading diff-tree failed.");
2222
2223         # try to figure out the next tag after this commit
2224         my $tagname;
2225         my $refs = read_info_ref("tags");
2226         open $fd, "-|", $GIT, "rev-list", "HEAD";
2227         my @commits = map { chomp; $_ } <$fd>;
2228         close $fd;
2229         foreach my $commit (@commits) {
2230                 if (defined $refs->{$commit}) {
2231                         $tagname = $refs->{$commit}
2232                 }
2233                 if ($commit eq $hash) {
2234                         last;
2235                 }
2236         }
2237
2238         print $cgi->header(-type => "text/plain", -charset => 'utf-8', '-content-disposition' => "inline; filename=\"git-$hash.patch\"");
2239         my %co = git_read_commit($hash);
2240         my %ad = date_str($co{'author_epoch'}, $co{'author_tz'});
2241         my $comment = $co{'comment'};
2242         print "From: $co{'author'}\n" .
2243               "Date: $ad{'rfc2822'} ($ad{'tz_local'})\n".
2244               "Subject: $co{'title'}\n";
2245         if (defined $tagname) {
2246                 print "X-Git-Tag: $tagname\n";
2247         }
2248         print "X-Git-Url: $my_url?p=$project;a=commitdiff;h=$hash\n" .
2249               "\n";
2250
2251         foreach my $line (@$comment) {;
2252                 print "$line\n";
2253         }
2254         print "---\n\n";
2255
2256         foreach my $line (@difftree) {
2257                 $line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)\t(.*)$/;
2258                 my $from_id = $3;
2259                 my $to_id = $4;
2260                 my $status = $5;
2261                 my $file = $6;
2262                 if ($status eq "A") {
2263                         git_diff_print(undef, "/dev/null", $to_id, "b/$file", "plain");
2264                 } elsif ($status eq "D") {
2265                         git_diff_print($from_id, "a/$file", undef, "/dev/null", "plain");
2266                 } elsif ($status eq "M") {
2267                         git_diff_print($from_id, "a/$file",  $to_id, "b/$file", "plain");
2268                 }
2269         }
2270 }
2271
2272 sub git_history {
2273         if (!defined $hash_base) {
2274                 $hash_base = git_read_head($project);
2275         }
2276         my $ftype;
2277         my %co = git_read_commit($hash_base);
2278         if (!%co) {
2279                 die_error(undef, "Unknown commit object.");
2280         }
2281         my $refs = read_info_ref();
2282         git_header_html();
2283         git_page_nav('','', $hash_base,$co{'tree'},$hash_base);
2284         git_header_div('commit', esc_html($co{'title'}), $hash_base);
2285         if (!defined $hash && defined $file_name) {
2286                 $hash = git_get_hash_by_path($hash_base, $file_name);
2287         }
2288         if (defined $hash) {
2289                 $ftype = git_get_type($hash);
2290         }
2291         git_print_page_path($file_name, $ftype);
2292
2293         open my $fd, "-|",
2294                 $GIT, "rev-list", "--full-history", $hash_base, "--", $file_name;
2295         print "<table cellspacing=\"0\">\n";
2296         my $alternate = 0;
2297         while (my $line = <$fd>) {
2298                 if ($line =~ m/^([0-9a-fA-F]{40})/){
2299                         my $commit = $1;
2300                         my %co = git_read_commit($commit);
2301                         if (!%co) {
2302                                 next;
2303                         }
2304                         my $ref = git_get_referencing($refs, $commit);
2305                         if ($alternate) {
2306                                 print "<tr class=\"dark\">\n";
2307                         } else {
2308                                 print "<tr class=\"light\">\n";
2309                         }
2310                         $alternate ^= 1;
2311                         print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
2312                               "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 3)) . "</i></td>\n" .
2313                               "<td>" . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commit;h=$commit"), -class => "list"}, "<b>" .
2314                               esc_html(chop_str($co{'title'}, 50)) . "$ref</b>") . "</td>\n" .
2315                               "<td class=\"link\">" .
2316                               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commit;h=$commit")}, "commit") .
2317                               " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commitdiff;h=$commit")}, "commitdiff") .
2318                               " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=$ftype;hb=$commit;f=$file_name")}, $ftype);
2319                         my $blob = git_get_hash_by_path($hash_base, $file_name);
2320                         my $blob_parent = git_get_hash_by_path($commit, $file_name);
2321                         if (defined $blob && defined $blob_parent && $blob ne $blob_parent) {
2322                                 print " | " .
2323                                 $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blobdiff;h=$blob;hp=$blob_parent;hb=$commit;f=$file_name")},
2324                                 "diff to current");
2325                         }
2326                         print "</td>\n" .
2327                               "</tr>\n";
2328                 }
2329         }
2330         print "</table>\n";
2331         close $fd;
2332         git_footer_html();
2333 }
2334
2335 sub git_search {
2336         if (!defined $searchtext) {
2337                 die_error("", "Text field empty.");
2338         }
2339         if (!defined $hash) {
2340                 $hash = git_read_head($project);
2341         }
2342         my %co = git_read_commit($hash);
2343         if (!%co) {
2344                 die_error(undef, "Unknown commit object.");
2345         }
2346         # pickaxe may take all resources of your box and run for several minutes
2347         # with every query - so decide by yourself how public you make this feature :)
2348         my $commit_search = 1;
2349         my $author_search = 0;
2350         my $committer_search = 0;
2351         my $pickaxe_search = 0;
2352         if ($searchtext =~ s/^author\\://i) {
2353                 $author_search = 1;
2354         } elsif ($searchtext =~ s/^committer\\://i) {
2355                 $committer_search = 1;
2356         } elsif ($searchtext =~ s/^pickaxe\\://i) {
2357                 $commit_search = 0;
2358                 $pickaxe_search = 1;
2359         }
2360         git_header_html();
2361         git_page_nav('','', $hash,$co{'tree'},$hash);
2362         git_header_div('commit', esc_html($co{'title'}), $hash);
2363
2364         print "<table cellspacing=\"0\">\n";
2365         my $alternate = 0;
2366         if ($commit_search) {
2367                 $/ = "\0";
2368                 open my $fd, "-|", $GIT, "rev-list", "--header", "--parents", $hash or next;
2369                 while (my $commit_text = <$fd>) {
2370                         if (!grep m/$searchtext/i, $commit_text) {
2371                                 next;
2372                         }
2373                         if ($author_search && !grep m/\nauthor .*$searchtext/i, $commit_text) {
2374                                 next;
2375                         }
2376                         if ($committer_search && !grep m/\ncommitter .*$searchtext/i, $commit_text) {
2377                                 next;
2378                         }
2379                         my @commit_lines = split "\n", $commit_text;
2380                         my %co = git_read_commit(undef, \@commit_lines);
2381                         if (!%co) {
2382                                 next;
2383                         }
2384                         if ($alternate) {
2385                                 print "<tr class=\"dark\">\n";
2386                         } else {
2387                                 print "<tr class=\"light\">\n";
2388                         }
2389                         $alternate ^= 1;
2390                         print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
2391                               "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 5)) . "</i></td>\n" .
2392                               "<td>" .
2393                               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commit;h=$co{'id'}"), -class => "list"}, "<b>" . esc_html(chop_str($co{'title'}, 50)) . "</b><br/>");
2394                         my $comment = $co{'comment'};
2395                         foreach my $line (@$comment) {
2396                                 if ($line =~ m/^(.*)($searchtext)(.*)$/i) {
2397                                         my $lead = esc_html($1) || "";
2398                                         $lead = chop_str($lead, 30, 10);
2399                                         my $match = esc_html($2) || "";
2400                                         my $trail = esc_html($3) || "";
2401                                         $trail = chop_str($trail, 30, 10);
2402                                         my $text = "$lead<span class=\"match\">$match</span>$trail";
2403                                         print chop_str($text, 80, 5) . "<br/>\n";
2404                                 }
2405                         }
2406                         print "</td>\n" .
2407                               "<td class=\"link\">" .
2408                               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commit;h=$co{'id'}")}, "commit") .
2409                               " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=tree;h=$co{'tree'};hb=$co{'id'}")}, "tree");
2410                         print "</td>\n" .
2411                               "</tr>\n";
2412                 }
2413                 close $fd;
2414         }
2415
2416         if ($pickaxe_search) {
2417                 $/ = "\n";
2418                 open my $fd, "-|", "$GIT rev-list $hash | $GIT diff-tree -r --stdin -S\'$searchtext\'";
2419                 undef %co;
2420                 my @files;
2421                 while (my $line = <$fd>) {
2422                         if (%co && $line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)\t(.*)$/) {
2423                                 my %set;
2424                                 $set{'file'} = $6;
2425                                 $set{'from_id'} = $3;
2426                                 $set{'to_id'} = $4;
2427                                 $set{'id'} = $set{'to_id'};
2428                                 if ($set{'id'} =~ m/0{40}/) {
2429                                         $set{'id'} = $set{'from_id'};
2430                                 }
2431                                 if ($set{'id'} =~ m/0{40}/) {
2432                                         next;
2433                                 }
2434                                 push @files, \%set;
2435                         } elsif ($line =~ m/^([0-9a-fA-F]{40})$/){
2436                                 if (%co) {
2437                                         if ($alternate) {
2438                                                 print "<tr class=\"dark\">\n";
2439                                         } else {
2440                                                 print "<tr class=\"light\">\n";
2441                                         }
2442                                         $alternate ^= 1;
2443                                         print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
2444                                               "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 5)) . "</i></td>\n" .
2445                                               "<td>" .
2446                                               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commit;h=$co{'id'}"), -class => "list"}, "<b>" .
2447                                               esc_html(chop_str($co{'title'}, 50)) . "</b><br/>");
2448                                         while (my $setref = shift @files) {
2449                                                 my %set = %$setref;
2450                                                 print $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;h=$set{'id'};hb=$co{'id'};f=$set{'file'}"), class => "list"},
2451                                                       "<span class=\"match\">" . esc_html($set{'file'}) . "</span>") .
2452                                                       "<br/>\n";
2453                                         }
2454                                         print "</td>\n" .
2455                                               "<td class=\"link\">" .
2456                                               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commit;h=$co{'id'}")}, "commit") .
2457                                               " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=tree;h=$co{'tree'};hb=$co{'id'}")}, "tree");
2458                                         print "</td>\n" .
2459                                               "</tr>\n";
2460                                 }
2461                                 %co = git_read_commit($1);
2462                         }
2463                 }
2464                 close $fd;
2465         }
2466         print "</table>\n";
2467         git_footer_html();
2468 }
2469
2470 sub git_shortlog {
2471         my $head = git_read_head($project);
2472         if (!defined $hash) {
2473                 $hash = $head;
2474         }
2475         if (!defined $page) {
2476                 $page = 0;
2477         }
2478         my $refs = read_info_ref();
2479
2480         my $limit = sprintf("--max-count=%i", (100 * ($page+1)));
2481         open my $fd, "-|", $GIT, "rev-list", $limit, $hash
2482                 or die_error(undef, "Open git-rev-list failed.");
2483         my @revlist = map { chomp; $_ } <$fd>;
2484         close $fd;
2485
2486         my $paging_nav = git_get_paging_nav('shortlog', $hash, $head, $page, $#revlist);
2487         my $next_link = '';
2488         if ($#revlist >= (100 * ($page+1)-1)) {
2489                 $next_link =
2490                         $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=shortlog;h=$hash;pg=" . ($page+1)),
2491                                  -title => "Alt-n"}, "next");
2492         }
2493
2494
2495         git_header_html();
2496         git_page_nav('shortlog','', $hash,$hash,$hash, $paging_nav);
2497         git_header_div('summary', $project);
2498
2499         git_shortlog_body(\@revlist, ($page * 100), $#revlist, $refs, $next_link);
2500
2501         git_footer_html();
2502 }
2503
2504 ## ......................................................................
2505 ## feeds (RSS, OPML)
2506
2507 sub git_rss {
2508         # http://www.notestips.com/80256B3A007F2692/1/NAMO5P9UPQ
2509         open my $fd, "-|", $GIT, "rev-list", "--max-count=150", git_read_head($project)
2510                 or die_error(undef, "Open git-rev-list failed.");
2511         my @revlist = map { chomp; $_ } <$fd>;
2512         close $fd or die_error(undef, "Reading rev-list failed.");
2513         print $cgi->header(-type => 'text/xml', -charset => 'utf-8');
2514         print "<?xml version=\"1.0\" encoding=\"utf-8\"?>\n".
2515               "<rss version=\"2.0\" xmlns:content=\"http://purl.org/rss/1.0/modules/content/\">\n";
2516         print "<channel>\n";
2517         print "<title>$project</title>\n".
2518               "<link>" . esc_html("$my_url?p=$project;a=summary") . "</link>\n".
2519               "<description>$project log</description>\n".
2520               "<language>en</language>\n";
2521
2522         for (my $i = 0; $i <= $#revlist; $i++) {
2523                 my $commit = $revlist[$i];
2524                 my %co = git_read_commit($commit);
2525                 # we read 150, we always show 30 and the ones more recent than 48 hours
2526                 if (($i >= 20) && ((time - $co{'committer_epoch'}) > 48*60*60)) {
2527                         last;
2528                 }
2529                 my %cd = date_str($co{'committer_epoch'});
2530                 open $fd, "-|", $GIT, "diff-tree", '-r', $co{'parent'}, $co{'id'} or next;
2531                 my @difftree = map { chomp; $_ } <$fd>;
2532                 close $fd or next;
2533                 print "<item>\n" .
2534                       "<title>" .
2535                       sprintf("%d %s %02d:%02d", $cd{'mday'}, $cd{'month'}, $cd{'hour'}, $cd{'minute'}) . " - " . esc_html($co{'title'}) .
2536                       "</title>\n" .
2537                       "<author>" . esc_html($co{'author'}) . "</author>\n" .
2538                       "<pubDate>$cd{'rfc2822'}</pubDate>\n" .
2539                       "<guid isPermaLink=\"true\">" . esc_html("$my_url?p=$project;a=commit;h=$commit") . "</guid>\n" .
2540                       "<link>" . esc_html("$my_url?p=$project;a=commit;h=$commit") . "</link>\n" .
2541                       "<description>" . esc_html($co{'title'}) . "</description>\n" .
2542                       "<content:encoded>" .
2543                       "<![CDATA[\n";
2544                 my $comment = $co{'comment'};
2545                 foreach my $line (@$comment) {
2546                         $line = decode("utf8", $line, Encode::FB_DEFAULT);
2547                         print "$line<br/>\n";
2548                 }
2549                 print "<br/>\n";
2550                 foreach my $line (@difftree) {
2551                         if (!($line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)([0-9]{0,3})\t(.*)$/)) {
2552                                 next;
2553                         }
2554                         my $file = validate_input(unquote($7));
2555                         $file = decode("utf8", $file, Encode::FB_DEFAULT);
2556                         print "$file<br/>\n";
2557                 }
2558                 print "]]>\n" .
2559                       "</content:encoded>\n" .
2560                       "</item>\n";
2561         }
2562         print "</channel></rss>";
2563 }
2564
2565 sub git_opml {
2566         my @list = git_read_projects();
2567
2568         print $cgi->header(-type => 'text/xml', -charset => 'utf-8');
2569         print "<?xml version=\"1.0\" encoding=\"utf-8\"?>\n".
2570               "<opml version=\"1.0\">\n".
2571               "<head>".
2572               "  <title>$site_name Git OPML Export</title>\n".
2573               "</head>\n".
2574               "<body>\n".
2575               "<outline text=\"git RSS feeds\">\n";
2576
2577         foreach my $pr (@list) {
2578                 my %proj = %$pr;
2579                 my $head = git_read_head($proj{'path'});
2580                 if (!defined $head) {
2581                         next;
2582                 }
2583                 $ENV{'GIT_DIR'} = "$projectroot/$proj{'path'}";
2584                 my %co = git_read_commit($head);
2585                 if (!%co) {
2586                         next;
2587                 }
2588
2589                 my $path = esc_html(chop_str($proj{'path'}, 25, 5));
2590                 my $rss  = "$my_url?p=$proj{'path'};a=rss";
2591                 my $html = "$my_url?p=$proj{'path'};a=summary";
2592                 print "<outline type=\"rss\" text=\"$path\" title=\"$path\" xmlUrl=\"$rss\" htmlUrl=\"$html\"/>\n";
2593         }
2594         print "</outline>\n".
2595               "</body>\n".
2596               "</opml>\n";
2597 }