gitweb/gitweb.perl

   1 #!/usr/bin/perl
   2
   3 # gitweb - simple web interface to track changes in git repositories
   4 #
   5 # (C) 2005-2006, Kay Sievers <kay.sievers@vrfy.org>
   6 # (C) 2005, Christian Gierke
   7 #
   8 # This program is licensed under the GPLv2
   9
  10 use strict;
  11 use warnings;
  12 use CGI qw(:standard :escapeHTML -nosticky);
  13 use CGI::Util qw(unescape);
  14 use CGI::Carp qw(fatalsToBrowser);
  15 use Encode;
  16 use Fcntl ':mode';
  17 use File::Find qw();
  18 binmode STDOUT, ':utf8';
  19
  20 our $cgi = new CGI;
  21 our $version = "++GIT_VERSION++";
  22 our $my_url = $cgi->url();
  23 our $my_uri = $cgi->url(-absolute => 1);
  24
  25 # core git executable to use
  26 # this can just be "git" if your webserver has a sensible PATH
  27 our $GIT = "++GIT_BINDIR++/git";
  28
  29 # absolute fs-path which will be prepended to the project path
  30 #our $projectroot = "/pub/scm";
  31 our $projectroot = "++GITWEB_PROJECTROOT++";
  32
  33 # location for temporary files needed for diffs
  34 our $git_temp = "/tmp/gitweb";
  35
  36 # target of the home link on top of all pages
  37 our $home_link = $my_uri;
  38
  39 # name of your site or organization to appear in page titles
  40 # replace this with something more descriptive for clearer bookmarks
  41 our $site_name = "++GITWEB_SITENAME++" || $ENV{'SERVER_NAME'} || "Untitled";
  42
  43 # html text to include at home page
  44 our $home_text = "++GITWEB_HOMETEXT++";
  45
  46 # URI of default stylesheet
  47 our $stylesheet = "++GITWEB_CSS++";
  48 # URI of GIT logo
  49 our $logo = "++GITWEB_LOGO++";
  50
  51 # source of projects list
  52 our $projects_list = "++GITWEB_LIST++";
  53
  54 # default blob_plain mimetype and default charset for text/plain blob
  55 our $default_blob_plain_mimetype = 'text/plain';
  56 our $default_text_plain_charset  = undef;
  57
  58 # file to use for guessing MIME types before trying /etc/mime.types
  59 # (relative to the current git repository)
  60 our $mimetypes_file = undef;
  61
  62 our $GITWEB_CONFIG = $ENV{'GITWEB_CONFIG'} || "++GITWEB_CONFIG++";
  63 require $GITWEB_CONFIG if -e $GITWEB_CONFIG;
  64
  65 # version of the core git binary
  66 our $git_version = qx($GIT --version) =~ m/git version (.*)$/ ? $1 : "unknown";
  67
  68 $projects_list ||= $projectroot;
  69 if (! -d $git_temp) {
  70         mkdir($git_temp, 0700) || die_error(undef, "Couldn't mkdir $git_temp");
  71 }
  72
  73 # ======================================================================
  74 # input validation and dispatch
  75 our $action = $cgi->param('a');
  76 if (defined $action) {
  77         if ($action =~ m/[^0-9a-zA-Z\.\-_]/) {
  78                 die_error(undef, "Invalid action parameter");
  79         }
  80         # action which does not check rest of parameters
  81         if ($action eq "opml") {
  82                 git_opml();
  83                 exit;
  84         }
  85 }
  86
  87 our $project = ($cgi->param('p') || $ENV{'PATH_INFO'});
  88 $project =~ s|^/||; $project =~ s|/$||;
  89 if (defined $project && $project) {
  90         if (!validate_input($project)) {
  91                 die_error(undef, "Invalid project parameter");
  92         }
  93         if (!(-d "$projectroot/$project")) {
  94                 die_error(undef, "No such directory");
  95         }
  96         if (!(-e "$projectroot/$project/HEAD")) {
  97                 die_error(undef, "No such project");
  98         }
  99         $ENV{'GIT_DIR'} = "$projectroot/$project";
 100 } else {
 101         git_project_list();
 102         exit;
 103 }
 104
 105 our $file_name = $cgi->param('f');
 106 if (defined $file_name) {
 107         if (!validate_input($file_name)) {
 108                 die_error(undef, "Invalid file parameter");
 109         }
 110 }
 111
 112 our $hash = $cgi->param('h');
 113 if (defined $hash) {
 114         if (!validate_input($hash)) {
 115                 die_error(undef, "Invalid hash parameter");
 116         }
 117 }
 118
 119 our $hash_parent = $cgi->param('hp');
 120 if (defined $hash_parent) {
 121         if (!validate_input($hash_parent)) {
 122                 die_error(undef, "Invalid hash parent parameter");
 123         }
 124 }
 125
 126 our $hash_base = $cgi->param('hb');
 127 if (defined $hash_base) {
 128         if (!validate_input($hash_base)) {
 129                 die_error(undef, "Invalid hash base parameter");
 130         }
 131 }
 132
 133 our $page = $cgi->param('pg');
 134 if (defined $page) {
 135         if ($page =~ m/[^0-9]$/) {
 136                 die_error(undef, "Invalid page parameter");
 137         }
 138 }
 139
 140 our $searchtext = $cgi->param('s');
 141 if (defined $searchtext) {
 142         if ($searchtext =~ m/[^a-zA-Z0-9_\.\/\-\+\:\@ ]/) {
 143                 die_error(undef, "Invalid search parameter");
 144         }
 145         $searchtext = quotemeta $searchtext;
 146 }
 147
 148 # dispatch
 149 my %actions = (
 150         "blame" => \&git_blame2,
 151         "blobdiff" => \&git_blobdiff,
 152         "blobdiff_plain" => \&git_blobdiff_plain,
 153         "blob" => \&git_blob,
 154         "blob_plain" => \&git_blob_plain,
 155         "commitdiff" => \&git_commitdiff,
 156         "commitdiff_plain" => \&git_commitdiff_plain,
 157         "commit" => \&git_commit,
 158         "heads" => \&git_heads,
 159         "history" => \&git_history,
 160         "log" => \&git_log,
 161         "rss" => \&git_rss,
 162         "search" => \&git_search,
 163         "shortlog" => \&git_shortlog,
 164         "summary" => \&git_summary,
 165         "tag" => \&git_tag,
 166         "tags" => \&git_tags,
 167         "tree" => \&git_tree,
 168 );
 169
 170 $action = 'summary' if (!defined($action));
 171 if (!defined($actions{$action})) {
 172         die_error(undef, "Unknown action");
 173 }
 174 $actions{$action}->();
 175 exit;
 176
 177 ## ======================================================================
 178 ## validation, quoting/unquoting and escaping
 179
 180 sub validate_input {
 181         my $input = shift;
 182
 183         if ($input =~ m/^[0-9a-fA-F]{40}$/) {
 184                 return $input;
 185         }
 186         if ($input =~ m/(^|\/)(|\.|\.\.)($|\/)/) {
 187                 return undef;
 188         }
 189         if ($input =~ m/[^a-zA-Z0-9_\x80-\xff\ \t\.\/\-\+\#\~\%]/) {
 190                 return undef;
 191         }
 192         return $input;
 193 }
 194
 195 # quote unsafe chars, but keep the slash, even when it's not
 196 # correct, but quoted slashes look too horrible in bookmarks
 197 sub esc_param {
 198         my $str = shift;
 199         $str =~ s/([^A-Za-z0-9\-_.~();\/;?:@&=])/sprintf("%%%02X", ord($1))/eg;
 200         $str =~ s/\+/%2B/g;
 201         $str =~ s/ /\+/g;
 202         return $str;
 203 }
 204
 205 # replace invalid utf8 character with SUBSTITUTION sequence
 206 sub esc_html {
 207         my $str = shift;
 208         $str = decode("utf8", $str, Encode::FB_DEFAULT);
 209         $str = escapeHTML($str);
 210         $str =~ s/\014/^L/g; # escape FORM FEED (FF) character (e.g. in COPYING file)
 211         return $str;
 212 }
 213
 214 # git may return quoted and escaped filenames
 215 sub unquote {
 216         my $str = shift;
 217         if ($str =~ m/^"(.*)"$/) {
 218                 $str = $1;
 219                 $str =~ s/\\([0-7]{1,3})/chr(oct($1))/eg;
 220         }
 221         return $str;
 222 }
 223
 224 # escape tabs (convert tabs to spaces)
 225 sub untabify {
 226         my $line = shift;
 227
 228         while ((my $pos = index($line, "\t")) != -1) {
 229                 if (my $count = (8 - ($pos % 8))) {
 230                         my $spaces = ' ' x $count;
 231                         $line =~ s/\t/$spaces/;
 232                 }
 233         }
 234
 235         return $line;
 236 }
 237
 238 ## ----------------------------------------------------------------------
 239 ## HTML aware string manipulation
 240
 241 sub chop_str {
 242         my $str = shift;
 243         my $len = shift;
 244         my $add_len = shift || 10;
 245
 246         # allow only $len chars, but don't cut a word if it would fit in $add_len
 247         # if it doesn't fit, cut it if it's still longer than the dots we would add
 248         $str =~ m/^(.{0,$len}[^ \/\-_:\.@]{0,$add_len})(.*)/;
 249         my $body = $1;
 250         my $tail = $2;
 251         if (length($tail) > 4) {
 252                 $tail = " ...";
 253                 $body =~ s/&[^;]*$//; # remove chopped character entities
 254         }
 255         return "$body$tail";
 256 }
 257
 258 ## ----------------------------------------------------------------------
 259 ## functions returning short strings
 260
 261 # CSS class for given age value (in seconds)
 262 sub age_class {
 263         my $age = shift;
 264
 265         if ($age < 60*60*2) {
 266                 return "age0";
 267         } elsif ($age < 60*60*24*2) {
 268                 return "age1";
 269         } else {
 270                 return "age2";
 271         }
 272 }
 273
 274 # convert age in seconds to "nn units ago" string
 275 sub age_string {
 276         my $age = shift;
 277         my $age_str;
 278
 279         if ($age > 60*60*24*365*2) {
 280                 $age_str = (int $age/60/60/24/365);
 281                 $age_str .= " years ago";
 282         } elsif ($age > 60*60*24*(365/12)*2) {
 283                 $age_str = int $age/60/60/24/(365/12);
 284                 $age_str .= " months ago";
 285         } elsif ($age > 60*60*24*7*2) {
 286                 $age_str = int $age/60/60/24/7;
 287                 $age_str .= " weeks ago";
 288         } elsif ($age > 60*60*24*2) {
 289                 $age_str = int $age/60/60/24;
 290                 $age_str .= " days ago";
 291         } elsif ($age > 60*60*2) {
 292                 $age_str = int $age/60/60;
 293                 $age_str .= " hours ago";
 294         } elsif ($age > 60*2) {
 295                 $age_str = int $age/60;
 296                 $age_str .= " min ago";
 297         } elsif ($age > 2) {
 298                 $age_str = int $age;
 299                 $age_str .= " sec ago";
 300         } else {
 301                 $age_str .= " right now";
 302         }
 303         return $age_str;
 304 }
 305
 306 # convert file mode in octal to symbolic file mode string
 307 sub mode_str {
 308         my $mode = oct shift;
 309
 310         if (S_ISDIR($mode & S_IFMT)) {
 311                 return 'drwxr-xr-x';
 312         } elsif (S_ISLNK($mode)) {
 313                 return 'lrwxrwxrwx';
 314         } elsif (S_ISREG($mode)) {
 315                 # git cares only about the executable bit
 316                 if ($mode & S_IXUSR) {
 317                         return '-rwxr-xr-x';
 318                 } else {
 319                         return '-rw-r--r--';
 320                 };
 321         } else {
 322                 return '----------';
 323         }
 324 }
 325
 326 # convert file mode in octal to file type string
 327 sub file_type {
 328         my $mode = oct shift;
 329
 330         if (S_ISDIR($mode & S_IFMT)) {
 331                 return "directory";
 332         } elsif (S_ISLNK($mode)) {
 333                 return "symlink";
 334         } elsif (S_ISREG($mode)) {
 335                 return "file";
 336         } else {
 337                 return "unknown";
 338         }
 339 }
 340
 341 ## ----------------------------------------------------------------------
 342 ## functions returning short HTML fragments, or transforming HTML fragments
 343 ## which don't beling to other sections
 344
 345 # format line of commit message or tag comment
 346 sub format_log_line_html {
 347         my $line = shift;
 348
 349         $line = esc_html($line);
 350         $line =~ s/ /&nbsp;/g;
 351         if ($line =~ m/([0-9a-fA-F]{40})/) {
 352                 my $hash_text = $1;
 353                 if (git_get_type($hash_text) eq "commit") {
 354                         my $link = $cgi->a({-class => "text", -href => "$my_uri?" . esc_param("p=$project;a=commit;h=$hash_text")}, $hash_text);
 355                         $line =~ s/$hash_text/$link/;
 356                 }
 357         }
 358         return $line;
 359 }
 360
 361 # format marker of refs pointing to given object
 362 sub git_get_referencing {
 363         my ($refs, $id) = @_;
 364
 365         if (defined $refs->{$id}) {
 366                 return ' <span class="tag">' . esc_html($refs->{$id}) . '</span>';
 367         } else {
 368                 return "";
 369         }
 370 }
 371
 372 ## ----------------------------------------------------------------------
 373 ## git utility subroutines, invoking git commands
 374
 375 # get HEAD ref of given project as hash
 376 sub git_read_head {
 377         my $project = shift;
 378         my $oENV = $ENV{'GIT_DIR'};
 379         my $retval = undef;
 380         $ENV{'GIT_DIR'} = "$projectroot/$project";
 381         if (open my $fd, "-|", $GIT, "rev-parse", "--verify", "HEAD") {
 382                 my $head = <$fd>;
 383                 close $fd;
 384                 if (defined $head && $head =~ /^([0-9a-fA-F]{40})$/) {
 385                         $retval = $1;
 386                 }
 387         }
 388         if (defined $oENV) {
 389                 $ENV{'GIT_DIR'} = $oENV;
 390         }
 391         return $retval;
 392 }
 393
 394 # get type of given object
 395 sub git_get_type {
 396         my $hash = shift;
 397
 398         open my $fd, "-|", $GIT, "cat-file", '-t', $hash or return;
 399         my $type = <$fd>;
 400         close $fd or return;
 401         chomp $type;
 402         return $type;
 403 }
 404
 405 sub git_get_project_config {
 406         my $key = shift;
 407
 408         return unless ($key);
 409         $key =~ s/^gitweb\.//;
 410         return if ($key =~ m/\W/);
 411
 412         my $val = qx($GIT repo-config --get gitweb.$key);
 413         return ($val);
 414 }
 415
 416 sub git_get_project_config_bool {
 417         my $val = git_get_project_config (@_);
 418         if ($val and $val =~ m/true|yes|on/) {
 419                 return (1);
 420         }
 421         return; # implicit false
 422 }
 423
 424 # get hash of given path at given ref
 425 sub git_get_hash_by_path {
 426         my $base = shift;
 427         my $path = shift || return undef;
 428
 429         my $tree = $base;
 430
 431         open my $fd, "-|", $GIT, "ls-tree", $base, "--", $path
 432                 or die_error(undef, "Open git-ls-tree failed");
 433         my $line = <$fd>;
 434         close $fd or return undef;
 435
 436         #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
 437         $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t(.+)$/;
 438         return $3;
 439 }
 440
 441 ## ......................................................................
 442 ## git utility functions, directly accessing git repository
 443
 444 # assumes that PATH is not symref
 445 sub git_read_hash {
 446         my $path = shift;
 447
 448         open my $fd, "$projectroot/$path" or return undef;
 449         my $head = <$fd>;
 450         close $fd;
 451         chomp $head;
 452         if ($head =~ m/^[0-9a-fA-F]{40}$/) {
 453                 return $head;
 454         }
 455 }
 456
 457 sub git_read_description {
 458         my $path = shift;
 459
 460         open my $fd, "$projectroot/$path/description" or return undef;
 461         my $descr = <$fd>;
 462         close $fd;
 463         chomp $descr;
 464         return $descr;
 465 }
 466
 467 sub git_read_projects {
 468         my @list;
 469
 470         if (-d $projects_list) {
 471                 # search in directory
 472                 my $dir = $projects_list;
 473                 opendir my ($dh), $dir or return undef;
 474                 while (my $dir = readdir($dh)) {
 475                         if (-e "$projectroot/$dir/HEAD") {
 476                                 my $pr = {
 477                                         path => $dir,
 478                                 };
 479                                 push @list, $pr
 480                         }
 481                 }
 482                 closedir($dh);
 483         } elsif (-f $projects_list) {
 484                 # read from file(url-encoded):
 485                 # 'git%2Fgit.git Linus+Torvalds'
 486                 # 'libs%2Fklibc%2Fklibc.git H.+Peter+Anvin'
 487                 # 'linux%2Fhotplug%2Fudev.git Greg+Kroah-Hartman'
 488                 open my ($fd), $projects_list or return undef;
 489                 while (my $line = <$fd>) {
 490                         chomp $line;
 491                         my ($path, $owner) = split ' ', $line;
 492                         $path = unescape($path);
 493                         $owner = unescape($owner);
 494                         if (!defined $path) {
 495                                 next;
 496                         }
 497                         if (-e "$projectroot/$path/HEAD") {
 498                                 my $pr = {
 499                                         path => $path,
 500                                         owner => decode("utf8", $owner, Encode::FB_DEFAULT),
 501                                 };
 502                                 push @list, $pr
 503                         }
 504                 }
 505                 close $fd;
 506         }
 507         @list = sort {$a->{'path'} cmp $b->{'path'}} @list;
 508         return @list;
 509 }
 510
 511 sub read_info_ref {
 512         my $type = shift || "";
 513         my %refs;
 514         # 5dc01c595e6c6ec9ccda4f6f69c131c0dd945f8c      refs/tags/v2.6.11
 515         # c39ae07f393806ccf406ef966e9a15afc43cc36a      refs/tags/v2.6.11^{}
 516         open my $fd, "$projectroot/$project/info/refs" or return;
 517         while (my $line = <$fd>) {
 518                 chomp $line;
 519                 # attention: for $type == "" it saves only last path part of ref name
 520                 # e.g. from 'refs/heads/jn/gitweb' it would leave only 'gitweb'
 521                 if ($line =~ m/^([0-9a-fA-F]{40})\t.*$type\/([^\^]+)/) {
 522                         if (defined $refs{$1}) {
 523                                 $refs{$1} .= " / $2";
 524                         } else {
 525                                 $refs{$1} = $2;
 526                         }
 527                 }
 528         }
 529         close $fd or return;
 530         return \%refs;
 531 }
 532
 533 ## ----------------------------------------------------------------------
 534 ## parse to hash functions
 535
 536 sub date_str {
 537         my $epoch = shift;
 538         my $tz = shift || "-0000";
 539
 540         my %date;
 541         my @months = ("Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec");
 542         my @days = ("Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat");
 543         my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($epoch);
 544         $date{'hour'} = $hour;
 545         $date{'minute'} = $min;
 546         $date{'mday'} = $mday;
 547         $date{'day'} = $days[$wday];
 548         $date{'month'} = $months[$mon];
 549         $date{'rfc2822'} = sprintf "%s, %d %s %4d %02d:%02d:%02d +0000", $days[$wday], $mday, $months[$mon], 1900+$year, $hour ,$min, $sec;
 550         $date{'mday-time'} = sprintf "%d %s %02d:%02d", $mday, $months[$mon], $hour ,$min;
 551
 552         $tz =~ m/^([+\-][0-9][0-9])([0-9][0-9])$/;
 553         my $local = $epoch + ((int $1 + ($2/60)) * 3600);
 554         ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($local);
 555         $date{'hour_local'} = $hour;
 556         $date{'minute_local'} = $min;
 557         $date{'tz_local'} = $tz;
 558         return %date;
 559 }
 560
 561 sub git_read_tag {
 562         my $tag_id = shift;
 563         my %tag;
 564         my @comment;
 565
 566         open my $fd, "-|", $GIT, "cat-file", "tag", $tag_id or return;
 567         $tag{'id'} = $tag_id;
 568         while (my $line = <$fd>) {
 569                 chomp $line;
 570                 if ($line =~ m/^object ([0-9a-fA-F]{40})$/) {
 571                         $tag{'object'} = $1;
 572                 } elsif ($line =~ m/^type (.+)$/) {
 573                         $tag{'type'} = $1;
 574                 } elsif ($line =~ m/^tag (.+)$/) {
 575                         $tag{'name'} = $1;
 576                 } elsif ($line =~ m/^tagger (.*) ([0-9]+) (.*)$/) {
 577                         $tag{'author'} = $1;
 578                         $tag{'epoch'} = $2;
 579                         $tag{'tz'} = $3;
 580                 } elsif ($line =~ m/--BEGIN/) {
 581                         push @comment, $line;
 582                         last;
 583                 } elsif ($line eq "") {
 584                         last;
 585                 }
 586         }
 587         push @comment, <$fd>;
 588         $tag{'comment'} = \@comment;
 589         close $fd or return;
 590         if (!defined $tag{'name'}) {
 591                 return
 592         };
 593         return %tag
 594 }
 595
 596 sub git_read_commit {
 597         my $commit_id = shift;
 598         my $commit_text = shift;
 599
 600         my @commit_lines;
 601         my %co;
 602
 603         if (defined $commit_text) {
 604                 @commit_lines = @$commit_text;
 605         } else {
 606                 $/ = "\0";
 607                 open my $fd, "-|", $GIT, "rev-list", "--header", "--parents", "--max-count=1", $commit_id or return;
 608                 @commit_lines = split '\n', <$fd>;
 609                 close $fd or return;
 610                 $/ = "\n";
 611                 pop @commit_lines;
 612         }
 613         my $header = shift @commit_lines;
 614         if (!($header =~ m/^[0-9a-fA-F]{40}/)) {
 615                 return;
 616         }
 617         ($co{'id'}, my @parents) = split ' ', $header;
 618         $co{'parents'} = \@parents;
 619         $co{'parent'} = $parents[0];
 620         while (my $line = shift @commit_lines) {
 621                 last if $line eq "\n";
 622                 if ($line =~ m/^tree ([0-9a-fA-F]{40})$/) {
 623                         $co{'tree'} = $1;
 624                 } elsif ($line =~ m/^author (.*) ([0-9]+) (.*)$/) {
 625                         $co{'author'} = $1;
 626                         $co{'author_epoch'} = $2;
 627                         $co{'author_tz'} = $3;
 628                         if ($co{'author'} =~ m/^([^<]+) </) {
 629                                 $co{'author_name'} = $1;
 630                         } else {
 631                                 $co{'author_name'} = $co{'author'};
 632                         }
 633                 } elsif ($line =~ m/^committer (.*) ([0-9]+) (.*)$/) {
 634                         $co{'committer'} = $1;
 635                         $co{'committer_epoch'} = $2;
 636                         $co{'committer_tz'} = $3;
 637                         $co{'committer_name'} = $co{'committer'};
 638                         $co{'committer_name'} =~ s/ <.*//;
 639                 }
 640         }
 641         if (!defined $co{'tree'}) {
 642                 return;
 643         };
 644
 645         foreach my $title (@commit_lines) {
 646                 $title =~ s/^    //;
 647                 if ($title ne "") {
 648                         $co{'title'} = chop_str($title, 80, 5);
 649                         # remove leading stuff of merges to make the interesting part visible
 650                         if (length($title) > 50) {
 651                                 $title =~ s/^Automatic //;
 652                                 $title =~ s/^merge (of|with) /Merge ... /i;
 653                                 if (length($title) > 50) {
 654                                         $title =~ s/(http|rsync):\/\///;
 655                                 }
 656                                 if (length($title) > 50) {
 657                                         $title =~ s/(master|www|rsync)\.//;
 658                                 }
 659                                 if (length($title) > 50) {
 660                                         $title =~ s/kernel.org:?//;
 661                                 }
 662                                 if (length($title) > 50) {
 663                                         $title =~ s/\/pub\/scm//;
 664                                 }
 665                         }
 666                         $co{'title_short'} = chop_str($title, 50, 5);
 667                         last;
 668                 }
 669         }
 670         # remove added spaces
 671         foreach my $line (@commit_lines) {
 672                 $line =~ s/^    //;
 673         }
 674         $co{'comment'} = \@commit_lines;
 675
 676         my $age = time - $co{'committer_epoch'};
 677         $co{'age'} = $age;
 678         $co{'age_string'} = age_string($age);
 679         my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($co{'committer_epoch'});
 680         if ($age > 60*60*24*7*2) {
 681                 $co{'age_string_date'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
 682                 $co{'age_string_age'} = $co{'age_string'};
 683         } else {
 684                 $co{'age_string_date'} = $co{'age_string'};
 685                 $co{'age_string_age'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
 686         }
 687         return %co;
 688 }
 689
 690 ## ......................................................................
 691 ## parse to array of hashes functions
 692
 693 sub git_read_refs {
 694         my $ref_dir = shift;
 695         my @reflist;
 696
 697         my @refs;
 698         my $pfxlen = length("$projectroot/$project/$ref_dir");
 699         File::Find::find(sub {
 700                 return if (/^\./);
 701                 if (-f $_) {
 702                         push @refs, substr($File::Find::name, $pfxlen + 1);
 703                 }
 704         }, "$projectroot/$project/$ref_dir");
 705
 706         foreach my $ref_file (@refs) {
 707                 my $ref_id = git_read_hash("$project/$ref_dir/$ref_file");
 708                 my $type = git_get_type($ref_id) || next;
 709                 my %ref_item;
 710                 my %co;
 711                 $ref_item{'type'} = $type;
 712                 $ref_item{'id'} = $ref_id;
 713                 $ref_item{'epoch'} = 0;
 714                 $ref_item{'age'} = "unknown";
 715                 if ($type eq "tag") {
 716                         my %tag = git_read_tag($ref_id);
 717                         $ref_item{'comment'} = $tag{'comment'};
 718                         if ($tag{'type'} eq "commit") {
 719                                 %co = git_read_commit($tag{'object'});
 720                                 $ref_item{'epoch'} = $co{'committer_epoch'};
 721                                 $ref_item{'age'} = $co{'age_string'};
 722                         } elsif (defined($tag{'epoch'})) {
 723                                 my $age = time - $tag{'epoch'};
 724                                 $ref_item{'epoch'} = $tag{'epoch'};
 725                                 $ref_item{'age'} = age_string($age);
 726                         }
 727                         $ref_item{'reftype'} = $tag{'type'};
 728                         $ref_item{'name'} = $tag{'name'};
 729                         $ref_item{'refid'} = $tag{'object'};
 730                 } elsif ($type eq "commit"){
 731                         %co = git_read_commit($ref_id);
 732                         $ref_item{'reftype'} = "commit";
 733                         $ref_item{'name'} = $ref_file;
 734                         $ref_item{'title'} = $co{'title'};
 735                         $ref_item{'refid'} = $ref_id;
 736                         $ref_item{'epoch'} = $co{'committer_epoch'};
 737                         $ref_item{'age'} = $co{'age_string'};
 738                 } else {
 739                         $ref_item{'reftype'} = $type;
 740                         $ref_item{'name'} = $ref_file;
 741                         $ref_item{'refid'} = $ref_id;
 742                 }
 743
 744                 push @reflist, \%ref_item;
 745         }
 746         # sort tags by age
 747         @reflist = sort {$b->{'epoch'} <=> $a->{'epoch'}} @reflist;
 748         return \@reflist;
 749 }
 750
 751 ## ----------------------------------------------------------------------
 752 ## filesystem-related functions
 753
 754 sub get_file_owner {
 755         my $path = shift;
 756
 757         my ($dev, $ino, $mode, $nlink, $st_uid, $st_gid, $rdev, $size) = stat($path);
 758         my ($name, $passwd, $uid, $gid, $quota, $comment, $gcos, $dir, $shell) = getpwuid($st_uid);
 759         if (!defined $gcos) {
 760                 return undef;
 761         }
 762         my $owner = $gcos;
 763         $owner =~ s/[,;].*$//;
 764         return decode("utf8", $owner, Encode::FB_DEFAULT);
 765 }
 766
 767 ## ......................................................................
 768 ## mimetype related functions
 769
 770 sub mimetype_guess_file {
 771         my $filename = shift;
 772         my $mimemap = shift;
 773         -r $mimemap or return undef;
 774
 775         my %mimemap;
 776         open(MIME, $mimemap) or return undef;
 777         while (<MIME>) {
 778                 my ($mime, $exts) = split(/\t+/);
 779                 if (defined $exts) {
 780                         my @exts = split(/\s+/, $exts);
 781                         foreach my $ext (@exts) {
 782                                 $mimemap{$ext} = $mime;
 783                         }
 784                 }
 785         }
 786         close(MIME);
 787
 788         $filename =~ /\.(.*?)$/;
 789         return $mimemap{$1};
 790 }
 791
 792 sub mimetype_guess {
 793         my $filename = shift;
 794         my $mime;
 795         $filename =~ /\./ or return undef;
 796
 797         if ($mimetypes_file) {
 798                 my $file = $mimetypes_file;
 799                 #$file =~ m#^/# or $file = "$projectroot/$path/$file";
 800                 $mime = mimetype_guess_file($filename, $file);
 801         }
 802         $mime ||= mimetype_guess_file($filename, '/etc/mime.types');
 803         return $mime;
 804 }
 805
 806 sub git_blob_plain_mimetype {
 807         my $fd = shift;
 808         my $filename = shift;
 809
 810         if ($filename) {
 811                 my $mime = mimetype_guess($filename);
 812                 $mime and return $mime;
 813         }
 814
 815         # just in case
 816         return $default_blob_plain_mimetype unless $fd;
 817
 818         if (-T $fd) {
 819                 return 'text/plain' .
 820                        ($default_text_plain_charset ? '; charset='.$default_text_plain_charset : '');
 821         } elsif (! $filename) {
 822                 return 'application/octet-stream';
 823         } elsif ($filename =~ m/\.png$/i) {
 824                 return 'image/png';
 825         } elsif ($filename =~ m/\.gif$/i) {
 826                 return 'image/gif';
 827         } elsif ($filename =~ m/\.jpe?g$/i) {
 828                 return 'image/jpeg';
 829         } else {
 830                 return 'application/octet-stream';
 831         }
 832 }
 833
 834 ## ======================================================================
 835 ## functions printing HTML: header, footer, error page
 836
 837 sub git_header_html {
 838         my $status = shift || "200 OK";
 839         my $expires = shift;
 840
 841         my $title = "$site_name git";
 842         if (defined $project) {
 843                 $title .= " - $project";
 844                 if (defined $action) {
 845                         $title .= "/$action";
 846                         if (defined $file_name) {
 847                                 $title .= " - $file_name";
 848                                 if ($action eq "tree" && $file_name !~ m|/$|) {
 849                                         $title .= "/";
 850                                 }
 851                         }
 852                 }
 853         }
 854         my $content_type;
 855         # require explicit support from the UA if we are to send the page as
 856         # 'application/xhtml+xml', otherwise send it as plain old 'text/html'.
 857         # we have to do this because MSIE sometimes globs '*/*', pretending to
 858         # support xhtml+xml but choking when it gets what it asked for.
 859         if (defined $cgi->http('HTTP_ACCEPT') && $cgi->http('HTTP_ACCEPT') =~ m/(,|;|\s|^)application\/xhtml\+xml(,|;|\s|$)/ && $cgi->Accept('application/xhtml+xml') != 0) {
 860                 $content_type = 'application/xhtml+xml';
 861         } else {
 862                 $content_type = 'text/html';
 863         }
 864         print $cgi->header(-type=>$content_type, -charset => 'utf-8', -status=> $status, -expires => $expires);
 865         print <<EOF;
 866 <?xml version="1.0" encoding="utf-8"?>
 867 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
 868 <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en-US" lang="en-US">
 869 <!-- git web interface v$version, (C) 2005-2006, Kay Sievers <kay.sievers\@vrfy.org>, Christian Gierke -->
 870 <!-- git core binaries version $git_version -->
 871 <head>
 872 <meta http-equiv="content-type" content="$content_type; charset=utf-8"/>
 873 <meta name="robots" content="index, nofollow"/>
 874 <title>$title</title>
 875 <link rel="stylesheet" type="text/css" href="$stylesheet"/>
 876 EOF
 877         print "<link rel=\"alternate\" title=\"" . esc_param($project) . " log\" href=\"" .
 878               "$my_uri?" . esc_param("p=$project;a=rss") . "\" type=\"application/rss+xml\"/>\n" .
 879               "</head>\n";
 880
 881         print "<body>\n" .
 882               "<div class=\"page_header\">\n" .
 883               "<a href=\"http://www.kernel.org/pub/software/scm/git/docs/\" title=\"git documentation\">" .
 884               "<img src=\"$logo\" width=\"72\" height=\"27\" alt=\"git\" style=\"float:right; border-width:0px;\"/>" .
 885               "</a>\n";
 886         print $cgi->a({-href => esc_param($home_link)}, "projects") . " / ";
 887         if (defined $project) {
 888                 print $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=summary")}, esc_html($project));
 889                 if (defined $action) {
 890                         print " / $action";
 891                 }
 892                 print "\n";
 893                 if (!defined $searchtext) {
 894                         $searchtext = "";
 895                 }
 896                 my $search_hash;
 897                 if (defined $hash_base) {
 898                         $search_hash = $hash_base;
 899                 } elsif (defined $hash) {
 900                         $search_hash = $hash;
 901                 } else {
 902                         $search_hash = "HEAD";
 903                 }
 904                 $cgi->param("a", "search");
 905                 $cgi->param("h", $search_hash);
 906                 print $cgi->startform(-method => "get", -action => $my_uri) .
 907                       "<div class=\"search\">\n" .
 908                       $cgi->hidden(-name => "p") . "\n" .
 909                       $cgi->hidden(-name => "a") . "\n" .
 910                       $cgi->hidden(-name => "h") . "\n" .
 911                       $cgi->textfield(-name => "s", -value => $searchtext) . "\n" .
 912                       "</div>" .
 913                       $cgi->end_form() . "\n";
 914         }
 915         print "</div>\n";
 916 }
 917
 918 sub git_footer_html {
 919         print "<div class=\"page_footer\">\n";
 920         if (defined $project) {
 921                 my $descr = git_read_description($project);
 922                 if (defined $descr) {
 923                         print "<div class=\"page_footer_text\">" . esc_html($descr) . "</div>\n";
 924                 }
 925                 print $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=rss"), -class => "rss_logo"}, "RSS") . "\n";
 926         } else {
 927                 print $cgi->a({-href => "$my_uri?" . esc_param("a=opml"), -class => "rss_logo"}, "OPML") . "\n";
 928         }
 929         print "</div>\n" .
 930               "</body>\n" .
 931               "</html>";
 932 }
 933
 934 sub die_error {
 935         my $status = shift || "403 Forbidden";
 936         my $error = shift || "Malformed query, file missing or permission denied";
 937
 938         git_header_html($status);
 939         print "<div class=\"page_body\">\n" .
 940               "<br/><br/>\n" .
 941               "$status - $error\n" .
 942               "<br/>\n" .
 943               "</div>\n";
 944         git_footer_html();
 945         exit;
 946 }
 947
 948 ## ----------------------------------------------------------------------
 949 ## functions printing or outputting HTML: navigation
 950
 951 sub git_page_nav {
 952         my ($current, $suppress, $head, $treehead, $treebase, $extra) = @_;
 953         $extra = '' if !defined $extra; # pager or formats
 954
 955         my @navs = qw(summary shortlog log commit commitdiff tree);
 956         if ($suppress) {
 957                 @navs = grep { $_ ne $suppress } @navs;
 958         }
 959
 960         my %arg = map { $_, ''} @navs;
 961         if (defined $head) {
 962                 for (qw(commit commitdiff)) {
 963                         $arg{$_} = ";h=$head";
 964                 }
 965                 if ($current =~ m/^(tree | log | shortlog | commit | commitdiff | search)$/x) {
 966                         for (qw(shortlog log)) {
 967                                 $arg{$_} = ";h=$head";
 968                         }
 969                 }
 970         }
 971         $arg{tree} .= ";h=$treehead" if defined $treehead;
 972         $arg{tree} .= ";hb=$treebase" if defined $treebase;
 973
 974         print "<div class=\"page_nav\">\n" .
 975                 (join " | ",
 976                  map { $_ eq $current
 977                                          ? $_
 978                                          : $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=$_$arg{$_}")}, "$_")
 979                                  }
 980                  @navs);
 981         print "<br/>\n$extra<br/>\n" .
 982               "</div>\n";
 983 }
 984
 985 sub git_get_paging_nav {
 986         my ($action, $hash, $head, $page, $nrevs) = @_;
 987         my $paging_nav;
 988
 989
 990         if ($hash ne $head || $page) {
 991                 $paging_nav .= $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=$action")}, "HEAD");
 992         } else {
 993                 $paging_nav .= "HEAD";
 994         }
 995
 996         if ($page > 0) {
 997                 $paging_nav .= " &sdot; " .
 998                         $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=$action;h=$hash;pg=" . ($page-1)),
 999                                                          -accesskey => "p", -title => "Alt-p"}, "prev");
1000         } else {
1001                 $paging_nav .= " &sdot; prev";
1002         }
1003
1004         if ($nrevs >= (100 * ($page+1)-1)) {
1005                 $paging_nav .= " &sdot; " .
1006                         $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=$action;h=$hash;pg=" . ($page+1)),
1007                                                          -accesskey => "n", -title => "Alt-n"}, "next");
1008         } else {
1009                 $paging_nav .= " &sdot; next";
1010         }
1011
1012         return $paging_nav;
1013 }
1014
1015 ## ......................................................................
1016 ## functions printing or outputting HTML: div
1017
1018 sub git_header_div {
1019         my ($action, $title, $hash, $hash_base) = @_;
1020         my $rest = '';
1021
1022         $rest .= ";h=$hash" if $hash;
1023         $rest .= ";hb=$hash_base" if $hash_base;
1024
1025         print "<div class=\"header\">\n" .
1026               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=$action$rest"),
1027                        -class => "title"}, $title ? $title : $action) . "\n" .
1028               "</div>\n";
1029 }
1030
1031 sub git_print_page_path {
1032         my $name = shift;
1033         my $type = shift;
1034
1035         if (!defined $name) {
1036                 print "<div class=\"page_path\"><b>/</b></div>\n";
1037         } elsif (defined $type && $type eq 'blob') {
1038                 print "<div class=\"page_path\"><b>" .
1039                         $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob_plain;f=$file_name")}, esc_html($name)) . "</b><br/></div>\n";
1040         } else {
1041                 print "<div class=\"page_path\"><b>" . esc_html($name) . "</b><br/></div>\n";
1042         }
1043 }
1044
1045 ## ......................................................................
1046 ## functions printing large fragments of HTML
1047
1048 sub git_shortlog_body {
1049         # uses global variable $project
1050         my ($revlist, $from, $to, $refs, $extra) = @_;
1051         $from = 0 unless defined $from;
1052         $to = $#{$revlist} if (!defined $to || $#{$revlist} < $to);
1053
1054         print "<table class=\"shortlog\" cellspacing=\"0\">\n";
1055         my $alternate = 0;
1056         for (my $i = $from; $i <= $to; $i++) {
1057                 my $commit = $revlist->[$i];
1058                 #my $ref = defined $refs ? git_get_referencing($refs, $commit) : '';
1059                 my $ref = git_get_referencing($refs, $commit);
1060                 my %co = git_read_commit($commit);
1061                 my %ad = date_str($co{'author_epoch'});
1062                 if ($alternate) {
1063                         print "<tr class=\"dark\">\n";
1064                 } else {
1065                         print "<tr class=\"light\">\n";
1066                 }
1067                 $alternate ^= 1;
1068                 # git_summary() used print "<td><i>$co{'age_string'}</i></td>\n" .
1069                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
1070                       "<td><i>" . esc_html(chop_str($co{'author_name'}, 10)) . "</i></td>\n" .
1071                       "<td>";
1072                 if (length($co{'title_short'}) < length($co{'title'})) {
1073                         print $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commit;h=$commit"),
1074                                        -class => "list", -title => "$co{'title'}"},
1075                               "<b>" . esc_html($co{'title_short'}) . "$ref</b>");
1076                 } else {
1077                         print $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commit;h=$commit"),
1078                                        -class => "list"},
1079                               "<b>" . esc_html($co{'title'}) . "$ref</b>");
1080                 }
1081                 print "</td>\n" .
1082                       "<td class=\"link\">" .
1083                       $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commit;h=$commit")}, "commit") . " | " .
1084                       $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commitdiff;h=$commit")}, "commitdiff") .
1085                       "</td>\n" .
1086                       "</tr>\n";
1087         }
1088         if (defined $extra) {
1089                 print "<tr>\n" .
1090                       "<td colspan=\"4\">$extra</td>\n" .
1091                       "</tr>\n";
1092         }
1093         print "</table>\n";
1094 }
1095
1096 sub git_tags_body {
1097         # uses global variable $project
1098         my ($taglist, $from, $to, $extra) = @_;
1099         $from = 0 unless defined $from;
1100         $to = $#{$taglist} if (!defined $to || $#{$taglist} < $to);
1101
1102         print "<table class=\"tags\" cellspacing=\"0\">\n";
1103         my $alternate = 0;
1104         for (my $i = $from; $i <= $to; $i++) {
1105                 my $entry = $taglist->[$i];
1106                 my %tag = %$entry;
1107                 my $comment_lines = $tag{'comment'};
1108                 my $comment = shift @$comment_lines;
1109                 my $comment_short;
1110                 if (defined $comment) {
1111                         $comment_short = chop_str($comment, 30, 5);
1112                 }
1113                 if ($alternate) {
1114                         print "<tr class=\"dark\">\n";
1115                 } else {
1116                         print "<tr class=\"light\">\n";
1117                 }
1118                 $alternate ^= 1;
1119                 print "<td><i>$tag{'age'}</i></td>\n" .
1120                       "<td>" .
1121                       $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=$tag{'reftype'};h=$tag{'refid'}"),
1122                                -class => "list"}, "<b>" . esc_html($tag{'name'}) . "</b>") .
1123                       "</td>\n" .
1124                       "<td>";
1125                 if (defined $comment) {
1126                         if (length($comment_short) < length($comment)) {
1127                                 print $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=tag;h=$tag{'id'}"),
1128                                                -class => "list", -title => $comment}, $comment_short);
1129                         } else {
1130                                 print $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=tag;h=$tag{'id'}"),
1131                                                -class => "list"}, $comment);
1132                         }
1133                 }
1134                 print "</td>\n" .
1135                       "<td class=\"selflink\">";
1136                 if ($tag{'type'} eq "tag") {
1137                         print $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=tag;h=$tag{'id'}")}, "tag");
1138                 } else {
1139                         print "&nbsp;";
1140                 }
1141                 print "</td>\n" .
1142                       "<td class=\"link\">" . " | " .
1143                       $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=$tag{'reftype'};h=$tag{'refid'}")}, $tag{'reftype'});
1144                 if ($tag{'reftype'} eq "commit") {
1145                         print " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=shortlog;h=$tag{'name'}")}, "shortlog") .
1146                               " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=log;h=$tag{'refid'}")}, "log");
1147                 } elsif ($tag{'reftype'} eq "blob") {
1148                         print " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob_plain;h=$tag{'refid'}")}, "raw");
1149                 }
1150                 print "</td>\n" .
1151                       "</tr>";
1152         }
1153         if (defined $extra) {
1154                 print "<tr>\n" .
1155                       "<td colspan=\"5\">$extra</td>\n" .
1156                       "</tr>\n";
1157         }
1158         print "</table>\n";
1159 }
1160
1161 sub git_heads_body {
1162         # uses global variable $project
1163         my ($taglist, $head, $from, $to, $extra) = @_;
1164         $from = 0 unless defined $from;
1165         $to = $#{$taglist} if (!defined $to || $#{$taglist} < $to);
1166
1167         print "<table class=\"heads\" cellspacing=\"0\">\n";
1168         my $alternate = 0;
1169         for (my $i = $from; $i <= $to; $i++) {
1170                 my $entry = $taglist->[$i];
1171                 my %tag = %$entry;
1172                 my $curr = $tag{'id'} eq $head;
1173                 if ($alternate) {
1174                         print "<tr class=\"dark\">\n";
1175                 } else {
1176                         print "<tr class=\"light\">\n";
1177                 }
1178                 $alternate ^= 1;
1179                 print "<td><i>$tag{'age'}</i></td>\n" .
1180                       ($tag{'id'} eq $head ? "<td class=\"current_head\">" : "<td>") .
1181                       $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=shortlog;h=$tag{'name'}"),
1182                                -class => "list"}, "<b>" . esc_html($tag{'name'}) . "</b>") .
1183                       "</td>\n" .
1184                       "<td class=\"link\">" .
1185                       $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=shortlog;h=$tag{'name'}")}, "shortlog") . " | " .
1186                       $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=log;h=$tag{'name'}")}, "log") .
1187                       "</td>\n" .
1188                       "</tr>";
1189         }
1190         if (defined $extra) {
1191                 print "<tr>\n" .
1192                       "<td colspan=\"3\">$extra</td>\n" .
1193                       "</tr>\n";
1194         }
1195         print "</table>\n";
1196 }
1197
1198 ## ----------------------------------------------------------------------
1199 ## functions printing large fragments, format as one of arguments
1200
1201 sub git_diff_print {
1202         my $from = shift;
1203         my $from_name = shift;
1204         my $to = shift;
1205         my $to_name = shift;
1206         my $format = shift || "html";
1207
1208         my $from_tmp = "/dev/null";
1209         my $to_tmp = "/dev/null";
1210         my $pid = $$;
1211
1212         # create tmp from-file
1213         if (defined $from) {
1214                 $from_tmp = "$git_temp/gitweb_" . $$ . "_from";
1215                 open my $fd2, "> $from_tmp";
1216                 open my $fd, "-|", $GIT, "cat-file", "blob", $from;
1217                 my @file = <$fd>;
1218                 print $fd2 @file;
1219                 close $fd2;
1220                 close $fd;
1221         }
1222
1223         # create tmp to-file
1224         if (defined $to) {
1225                 $to_tmp = "$git_temp/gitweb_" . $$ . "_to";
1226                 open my $fd2, "> $to_tmp";
1227                 open my $fd, "-|", $GIT, "cat-file", "blob", $to;
1228                 my @file = <$fd>;
1229                 print $fd2 @file;
1230                 close $fd2;
1231                 close $fd;
1232         }
1233
1234         open my $fd, "-|", "/usr/bin/diff -u -p -L \'$from_name\' -L \'$to_name\' $from_tmp $to_tmp";
1235         if ($format eq "plain") {
1236                 undef $/;
1237                 print <$fd>;
1238                 $/ = "\n";
1239         } else {
1240                 while (my $line = <$fd>) {
1241                         chomp $line;
1242                         my $char = substr($line, 0, 1);
1243                         my $diff_class = "";
1244                         if ($char eq '+') {
1245                                 $diff_class = " add";
1246                         } elsif ($char eq "-") {
1247                                 $diff_class = " rem";
1248                         } elsif ($char eq "@") {
1249                                 $diff_class = " chunk_header";
1250                         } elsif ($char eq "\\") {
1251                                 # skip errors
1252                                 next;
1253                         }
1254                         $line = untabify($line);
1255                         print "<div class=\"diff$diff_class\">" . esc_html($line) . "</div>\n";
1256                 }
1257         }
1258         close $fd;
1259
1260         if (defined $from) {
1261                 unlink($from_tmp);
1262         }
1263         if (defined $to) {
1264                 unlink($to_tmp);
1265         }
1266 }
1267
1268
1269 ## ======================================================================
1270 ## ======================================================================
1271 ## actions
1272
1273 sub git_project_list {
1274         my $order = $cgi->param('o');
1275         if (defined $order && $order !~ m/project|descr|owner|age/) {
1276                 die_error(undef, "Unknown order parameter");
1277         }
1278
1279         my @list = git_read_projects();
1280         my @projects;
1281         if (!@list) {
1282                 die_error(undef, "No projects found");
1283         }
1284         foreach my $pr (@list) {
1285                 my $head = git_read_head($pr->{'path'});
1286                 if (!defined $head) {
1287                         next;
1288                 }
1289                 $ENV{'GIT_DIR'} = "$projectroot/$pr->{'path'}";
1290                 my %co = git_read_commit($head);
1291                 if (!%co) {
1292                         next;
1293                 }
1294                 $pr->{'commit'} = \%co;
1295                 if (!defined $pr->{'descr'}) {
1296                         my $descr = git_read_description($pr->{'path'}) || "";
1297                         $pr->{'descr'} = chop_str($descr, 25, 5);
1298                 }
1299                 if (!defined $pr->{'owner'}) {
1300                         $pr->{'owner'} = get_file_owner("$projectroot/$pr->{'path'}") || "";
1301                 }
1302                 push @projects, $pr;
1303         }
1304
1305         git_header_html();
1306         if (-f $home_text) {
1307                 print "<div class=\"index_include\">\n";
1308                 open (my $fd, $home_text);
1309                 print <$fd>;
1310                 close $fd;
1311                 print "</div>\n";
1312         }
1313         print "<table class=\"project_list\">\n" .
1314               "<tr>\n";
1315         $order ||= "project";
1316         if ($order eq "project") {
1317                 @projects = sort {$a->{'path'} cmp $b->{'path'}} @projects;
1318                 print "<th>Project</th>\n";
1319         } else {
1320                 print "<th>" .
1321                       $cgi->a({-href => "$my_uri?" . esc_param("o=project"),
1322                                -class => "header"}, "Project") .
1323                       "</th>\n";
1324         }
1325         if ($order eq "descr") {
1326                 @projects = sort {$a->{'descr'} cmp $b->{'descr'}} @projects;
1327                 print "<th>Description</th>\n";
1328         } else {
1329                 print "<th>" .
1330                       $cgi->a({-href => "$my_uri?" . esc_param("o=descr"),
1331                                -class => "header"}, "Description") .
1332                       "</th>\n";
1333         }
1334         if ($order eq "owner") {
1335                 @projects = sort {$a->{'owner'} cmp $b->{'owner'}} @projects;
1336                 print "<th>Owner</th>\n";
1337         } else {
1338                 print "<th>" .
1339                       $cgi->a({-href => "$my_uri?" . esc_param("o=owner"),
1340                                -class => "header"}, "Owner") .
1341                       "</th>\n";
1342         }
1343         if ($order eq "age") {
1344                 @projects = sort {$a->{'commit'}{'age'} <=> $b->{'commit'}{'age'}} @projects;
1345                 print "<th>Last Change</th>\n";
1346         } else {
1347                 print "<th>" .
1348                       $cgi->a({-href => "$my_uri?" . esc_param("o=age"),
1349                                -class => "header"}, "Last Change") .
1350                       "</th>\n";
1351         }
1352         print "<th></th>\n" .
1353               "</tr>\n";
1354         my $alternate = 0;
1355         foreach my $pr (@projects) {
1356                 if ($alternate) {
1357                         print "<tr class=\"dark\">\n";
1358                 } else {
1359                         print "<tr class=\"light\">\n";
1360                 }
1361                 $alternate ^= 1;
1362                 print "<td>" . $cgi->a({-href => "$my_uri?" . esc_param("p=$pr->{'path'};a=summary"),
1363                                         -class => "list"}, esc_html($pr->{'path'})) . "</td>\n" .
1364                       "<td>" . esc_html($pr->{'descr'}) . "</td>\n" .
1365                       "<td><i>" . chop_str($pr->{'owner'}, 15) . "</i></td>\n";
1366                 print "<td class=\"". age_class($pr->{'commit'}{'age'}) . "\">" .
1367                       $pr->{'commit'}{'age_string'} . "</td>\n" .
1368                       "<td class=\"link\">" .
1369                       $cgi->a({-href => "$my_uri?" . esc_param("p=$pr->{'path'};a=summary")}, "summary")   . " | " .
1370                       $cgi->a({-href => "$my_uri?" . esc_param("p=$pr->{'path'};a=shortlog")}, "shortlog") . " | " .
1371                       $cgi->a({-href => "$my_uri?" . esc_param("p=$pr->{'path'};a=log")}, "log") .
1372                       "</td>\n" .
1373                       "</tr>\n";
1374         }
1375         print "</table>\n";
1376         git_footer_html();
1377 }
1378
1379 sub git_summary {
1380         my $descr = git_read_description($project) || "none";
1381         my $head = git_read_head($project);
1382         my %co = git_read_commit($head);
1383         my %cd = date_str($co{'committer_epoch'}, $co{'committer_tz'});
1384
1385         my $owner;
1386         if (-f $projects_list) {
1387                 open (my $fd , $projects_list);
1388                 while (my $line = <$fd>) {
1389                         chomp $line;
1390                         my ($pr, $ow) = split ' ', $line;
1391                         $pr = unescape($pr);
1392                         $ow = unescape($ow);
1393                         if ($pr eq $project) {
1394                                 $owner = decode("utf8", $ow, Encode::FB_DEFAULT);
1395                                 last;
1396                         }
1397                 }
1398                 close $fd;
1399         }
1400         if (!defined $owner) {
1401                 $owner = get_file_owner("$projectroot/$project");
1402         }
1403
1404         my $refs = read_info_ref();
1405         git_header_html();
1406         git_page_nav('summary','', $head);
1407
1408         print "<div class=\"title\">&nbsp;</div>\n";
1409         print "<table cellspacing=\"0\">\n" .
1410               "<tr><td>description</td><td>" . esc_html($descr) . "</td></tr>\n" .
1411               "<tr><td>owner</td><td>$owner</td></tr>\n" .
1412               "<tr><td>last change</td><td>$cd{'rfc2822'}</td></tr>\n" .
1413               "</table>\n";
1414
1415         open my $fd, "-|", $GIT, "rev-list", "--max-count=17", git_read_head($project)
1416                 or die_error(undef, "Open git-rev-list failed");
1417         my @revlist = map { chomp; $_ } <$fd>;
1418         close $fd;
1419         git_header_div('shortlog');
1420         git_shortlog_body(\@revlist, 0, 15, $refs,
1421                           $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=shortlog")}, "..."));
1422
1423         my $taglist = git_read_refs("refs/tags");
1424         if (defined @$taglist) {
1425                 git_header_div('tags');
1426                 git_tags_body($taglist, 0, 15,
1427                               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=tags")}, "..."));
1428         }
1429
1430         my $headlist = git_read_refs("refs/heads");
1431         if (defined @$headlist) {
1432                 git_header_div('heads');
1433                 git_heads_body($headlist, $head, 0, 15,
1434                                $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=heads")}, "..."));
1435         }
1436
1437         git_footer_html();
1438 }
1439
1440 sub git_tag {
1441         my $head = git_read_head($project);
1442         git_header_html();
1443         git_page_nav('','', $head,undef,$head);
1444         my %tag = git_read_tag($hash);
1445         git_header_div('commit', esc_html($tag{'name'}), $hash);
1446         print "<div class=\"title_text\">\n" .
1447               "<table cellspacing=\"0\">\n" .
1448               "<tr>\n" .
1449               "<td>object</td>\n" .
1450               "<td>" . $cgi->a({-class => "list", -href => "$my_uri?" . esc_param("p=$project;a=$tag{'type'};h=$tag{'object'}")}, $tag{'object'}) . "</td>\n" .
1451               "<td class=\"link\">" . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=$tag{'type'};h=$tag{'object'}")}, $tag{'type'}) . "</td>\n" .
1452               "</tr>\n";
1453         if (defined($tag{'author'})) {
1454                 my %ad = date_str($tag{'epoch'}, $tag{'tz'});
1455                 print "<tr><td>author</td><td>" . esc_html($tag{'author'}) . "</td></tr>\n";
1456                 print "<tr><td></td><td>" . $ad{'rfc2822'} . sprintf(" (%02d:%02d %s)", $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'}) . "</td></tr>\n";
1457         }
1458         print "</table>\n\n" .
1459               "</div>\n";
1460         print "<div class=\"page_body\">";
1461         my $comment = $tag{'comment'};
1462         foreach my $line (@$comment) {
1463                 print esc_html($line) . "<br/>\n";
1464         }
1465         print "</div>\n";
1466         git_footer_html();
1467 }
1468
1469 sub git_blame2 {
1470         my $fd;
1471         my $ftype;
1472         die_error(undef, "Permission denied") if (!git_get_project_config_bool ('blame'));
1473         die_error('404 Not Found', "File name not defined") if (!$file_name);
1474         $hash_base ||= git_read_head($project);
1475         die_error(undef, "Couldn't find base commit") unless ($hash_base);
1476         my %co = git_read_commit($hash_base)
1477                 or die_error(undef, "Reading commit failed");
1478         if (!defined $hash) {
1479                 $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
1480                         or die_error(undef, "Error looking up file");
1481         }
1482         $ftype = git_get_type($hash);
1483         if ($ftype !~ "blob") {
1484                 die_error("400 Bad Request", "Object is not a blob");
1485         }
1486         open ($fd, "-|", $GIT, "blame", '-l', $file_name, $hash_base)
1487                 or die_error(undef, "Open git-blame failed");
1488         git_header_html();
1489         my $formats_nav =
1490                 $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;h=$hash;hb=$hash_base;f=$file_name")}, "blob") .
1491                 " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blame;f=$file_name")}, "head");
1492         git_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
1493         git_header_div('commit', esc_html($co{'title'}), $hash_base);
1494         git_print_page_path($file_name, $ftype);
1495         my @rev_color = (qw(light dark));
1496         my $num_colors = scalar(@rev_color);
1497         my $current_color = 0;
1498         my $last_rev;
1499         print "<div class=\"page_body\">\n";
1500         print "<table class=\"blame\">\n";
1501         print "<tr><th>Commit</th><th>Line</th><th>Data</th></tr>\n";
1502         while (<$fd>) {
1503                 /^([0-9a-fA-F]{40}).*?(\d+)\)\s{1}(\s*.*)/;
1504                 my $full_rev = $1;
1505                 my $rev = substr($full_rev, 0, 8);
1506                 my $lineno = $2;
1507                 my $data = $3;
1508
1509                 if (!defined $last_rev) {
1510                         $last_rev = $full_rev;
1511                 } elsif ($last_rev ne $full_rev) {
1512                         $last_rev = $full_rev;
1513                         $current_color = ++$current_color % $num_colors;
1514                 }
1515                 print "<tr class=\"$rev_color[$current_color]\">\n";
1516                 print "<td class=\"sha1\">" .
1517                         $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commit;h=$full_rev;f=$file_name")}, esc_html($rev)) . "</td>\n";
1518                 print "<td class=\"linenr\"><a id=\"l$lineno\" href=\"#l$lineno\" class=\"linenr\">" . esc_html($lineno) . "</a></td>\n";
1519                 print "<td class=\"pre\">" . esc_html($data) . "</td>\n";
1520                 print "</tr>\n";
1521         }
1522         print "</table>\n";
1523         print "</div>";
1524         close $fd or print "Reading blob failed\n";
1525         git_footer_html();
1526 }
1527
1528 sub git_blame {
1529         my $fd;
1530         die_error('403 Permission denied', "Permission denied") if (!git_get_project_config_bool ('blame'));
1531         die_error('404 Not Found', "File name not defined") if (!$file_name);
1532         $hash_base ||= git_read_head($project);
1533         die_error(undef, "Couldn't find base commit") unless ($hash_base);
1534         my %co = git_read_commit($hash_base)
1535                 or die_error(undef, "Reading commit failed");
1536         if (!defined $hash) {
1537                 $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
1538                         or die_error(undef, "Error lookup file");
1539         }
1540         open ($fd, "-|", $GIT, "annotate", '-l', '-t', '-r', $file_name, $hash_base)
1541                 or die_error(undef, "Open git-annotate failed");
1542         git_header_html();
1543         my $formats_nav =
1544                 $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;h=$hash;hb=$hash_base;f=$file_name")}, "blob") .
1545                 " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blame;f=$file_name")}, "head");
1546         git_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
1547         git_header_div('commit', esc_html($co{'title'}), $hash_base);
1548         git_print_page_path($file_name, 'blob');
1549         print "<div class=\"page_body\">\n";
1550         print <<HTML;
1551 <table class="blame">
1552   <tr>
1553     <th>Commit</th>
1554     <th>Age</th>
1555     <th>Author</th>
1556     <th>Line</th>
1557     <th>Data</th>
1558   </tr>
1559 HTML
1560         my @line_class = (qw(light dark));
1561         my $line_class_len = scalar (@line_class);
1562         my $line_class_num = $#line_class;
1563         while (my $line = <$fd>) {
1564                 my $long_rev;
1565                 my $short_rev;
1566                 my $author;
1567                 my $time;
1568                 my $lineno;
1569                 my $data;
1570                 my $age;
1571                 my $age_str;
1572                 my $age_class;
1573
1574                 chomp $line;
1575                 $line_class_num = ($line_class_num + 1) % $line_class_len;
1576
1577                 if ($line =~ m/^([0-9a-fA-F]{40})\t\(\s*([^\t]+)\t(\d+) \+\d\d\d\d\t(\d+)\)(.*)$/) {
1578                         $long_rev = $1;
1579                         $author   = $2;
1580                         $time     = $3;
1581                         $lineno   = $4;
1582                         $data     = $5;
1583                 } else {
1584                         print qq(  <tr><td colspan="5" class="error">Unable to parse: $line</td></tr>\n);
1585                         next;
1586                 }
1587                 $short_rev  = substr ($long_rev, 0, 8);
1588                 $age        = time () - $time;
1589                 $age_str    = age_string ($age);
1590                 $age_str    =~ s/ /&nbsp;/g;
1591                 $age_class  = age_class($age);
1592                 $author     = esc_html ($author);
1593                 $author     =~ s/ /&nbsp;/g;
1594
1595                 $data = untabify($data);
1596                 $data = esc_html ($data);
1597
1598                 print <<HTML;
1599   <tr class="$line_class[$line_class_num]">
1600     <td class="sha1"><a href="$my_uri?${\esc_param ("p=$project;a=commit;h=$long_rev")}" class="text">$short_rev..</a></td>
1601     <td class="$age_class">$age_str</td>
1602     <td>$author</td>
1603     <td class="linenr"><a id="$lineno" href="#$lineno" class="linenr">$lineno</a></td>
1604     <td class="pre">$data</td>
1605   </tr>
1606 HTML
1607         } # while (my $line = <$fd>)
1608         print "</table>\n\n";
1609         close $fd or print "Reading blob failed.\n";
1610         print "</div>";
1611         git_footer_html();
1612 }
1613
1614 sub git_tags {
1615         my $head = git_read_head($project);
1616         git_header_html();
1617         git_page_nav('','', $head,undef,$head);
1618         git_header_div('summary', $project);
1619
1620         my $taglist = git_read_refs("refs/tags");
1621         if (defined @$taglist) {
1622                 git_tags_body($taglist);
1623         }
1624         git_footer_html();
1625 }
1626
1627 sub git_heads {
1628         my $head = git_read_head($project);
1629         git_header_html();
1630         git_page_nav('','', $head,undef,$head);
1631         git_header_div('summary', $project);
1632
1633         my $taglist = git_read_refs("refs/heads");
1634         my $alternate = 0;
1635         if (defined @$taglist) {
1636                 git_heads_body($taglist, $head);
1637         }
1638         git_footer_html();
1639 }
1640
1641 sub git_blob_plain {
1642         if (!defined $hash) {
1643                 if (defined $file_name) {
1644                         my $base = $hash_base || git_read_head($project);
1645                         $hash = git_get_hash_by_path($base, $file_name, "blob")
1646                                 or die_error(undef, "Error lookup file");
1647                 } else {
1648                         die_error(undef, "No file name defined");
1649                 }
1650         }
1651         my $type = shift;
1652         open my $fd, "-|", $GIT, "cat-file", "blob", $hash
1653                 or die_error(undef, "Couldn't cat $file_name, $hash");
1654
1655         $type ||= git_blob_plain_mimetype($fd, $file_name);
1656
1657         # save as filename, even when no $file_name is given
1658         my $save_as = "$hash";
1659         if (defined $file_name) {
1660                 $save_as = $file_name;
1661         } elsif ($type =~ m/^text\//) {
1662                 $save_as .= '.txt';
1663         }
1664
1665         print $cgi->header(-type => "$type", '-content-disposition' => "inline; filename=\"$save_as\"");
1666         undef $/;
1667         binmode STDOUT, ':raw';
1668         print <$fd>;
1669         binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
1670         $/ = "\n";
1671         close $fd;
1672 }
1673
1674 sub git_blob {
1675         if (!defined $hash) {
1676                 if (defined $file_name) {
1677                         my $base = $hash_base || git_read_head($project);
1678                         $hash = git_get_hash_by_path($base, $file_name, "blob")
1679                                 or die_error(undef, "Error lookup file");
1680                 } else {
1681                         die_error(undef, "No file name defined");
1682                 }
1683         }
1684         my $have_blame = git_get_project_config_bool ('blame');
1685         open my $fd, "-|", $GIT, "cat-file", "blob", $hash
1686                 or die_error(undef, "Couldn't cat $file_name, $hash");
1687         my $mimetype = git_blob_plain_mimetype($fd, $file_name);
1688         if ($mimetype !~ m/^text\//) {
1689                 close $fd;
1690                 return git_blob_plain($mimetype);
1691         }
1692         git_header_html();
1693         my $formats_nav = '';
1694         if (defined $hash_base && (my %co = git_read_commit($hash_base))) {
1695                 if (defined $file_name) {
1696                         if ($have_blame) {
1697                                 $formats_nav .= $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blame;h=$hash;hb=$hash_base;f=$file_name")}, "blame") . " | ";
1698                         }
1699                         $formats_nav .=
1700                                 $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob_plain;h=$hash;f=$file_name")}, "plain") .
1701                                 " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;hb=HEAD;f=$file_name")}, "head");
1702                 } else {
1703                         $formats_nav .= $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob_plain;h=$hash")}, "plain");
1704                 }
1705                 git_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
1706                 git_header_div('commit', esc_html($co{'title'}), $hash_base);
1707         } else {
1708                 print "<div class=\"page_nav\">\n" .
1709                       "<br/><br/></div>\n" .
1710                       "<div class=\"title\">$hash</div>\n";
1711         }
1712         git_print_page_path($file_name, "blob");
1713         print "<div class=\"page_body\">\n";
1714         my $nr;
1715         while (my $line = <$fd>) {
1716                 chomp $line;
1717                 $nr++;
1718                 $line = untabify($line);
1719                 printf "<div class=\"pre\"><a id=\"l%i\" href=\"#l%i\" class=\"linenr\">%4i</a> %s</div>\n", $nr, $nr, $nr, esc_html($line);
1720         }
1721         close $fd or print "Reading blob failed.\n";
1722         print "</div>";
1723         git_footer_html();
1724 }
1725
1726 sub git_tree {
1727         if (!defined $hash) {
1728                 $hash = git_read_head($project);
1729                 if (defined $file_name) {
1730                         my $base = $hash_base || $hash;
1731                         $hash = git_get_hash_by_path($base, $file_name, "tree");
1732                 }
1733                 if (!defined $hash_base) {
1734                         $hash_base = $hash;
1735                 }
1736         }
1737         $/ = "\0";
1738         open my $fd, "-|", $GIT, "ls-tree", '-z', $hash
1739                 or die_error(undef, "Open git-ls-tree failed");
1740         my @entries = map { chomp; $_ } <$fd>;
1741         close $fd or die_error(undef, "Reading tree failed");
1742         $/ = "\n";
1743
1744         my $refs = read_info_ref();
1745         my $ref = git_get_referencing($refs, $hash_base);
1746         git_header_html();
1747         my $base_key = "";
1748         my $base = "";
1749         my $have_blame = git_get_project_config_bool ('blame');
1750         if (defined $hash_base && (my %co = git_read_commit($hash_base))) {
1751                 $base_key = ";hb=$hash_base";
1752                 git_page_nav('tree','', $hash_base);
1753                 git_header_div('commit', esc_html($co{'title'}) . $ref, $hash_base);
1754         } else {
1755                 print "<div class=\"page_nav\">\n";
1756                 print "<br/><br/></div>\n";
1757                 print "<div class=\"title\">$hash</div>\n";
1758         }
1759         if (defined $file_name) {
1760                 $base = esc_html("$file_name/");
1761         }
1762         git_print_page_path($file_name, 'tree');
1763         print "<div class=\"page_body\">\n";
1764         print "<table cellspacing=\"0\">\n";
1765         my $alternate = 0;
1766         foreach my $line (@entries) {
1767                 #'100644        blob    0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa        panic.c'
1768                 $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t(.+)$/;
1769                 my $t_mode = $1;
1770                 my $t_type = $2;
1771                 my $t_hash = $3;
1772                 my $t_name = validate_input($4);
1773                 if ($alternate) {
1774                         print "<tr class=\"dark\">\n";
1775                 } else {
1776                         print "<tr class=\"light\">\n";
1777                 }
1778                 $alternate ^= 1;
1779                 print "<td class=\"mode\">" . mode_str($t_mode) . "</td>\n";
1780                 if ($t_type eq "blob") {
1781                         print "<td class=\"list\">" .
1782                               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;h=$t_hash$base_key;f=$base$t_name"), -class => "list"}, esc_html($t_name)) .
1783                               "</td>\n" .
1784                               "<td class=\"link\">" .
1785                               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;h=$t_hash$base_key;f=$base$t_name")}, "blob");
1786                         if ($have_blame) {
1787                                 print " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blame;h=$t_hash$base_key;f=$base$t_name")}, "blame");
1788                         }
1789                         print " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=history;h=$t_hash;hb=$hash_base;f=$base$t_name")}, "history") .
1790                               " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob_plain;h=$t_hash;f=$base$t_name")}, "raw") .
1791                               "</td>\n";
1792                 } elsif ($t_type eq "tree") {
1793                         print "<td class=\"list\">" .
1794                               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=tree;h=$t_hash$base_key;f=$base$t_name")}, esc_html($t_name)) .
1795                               "</td>\n" .
1796                               "<td class=\"link\">" .
1797                               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=tree;h=$t_hash$base_key;f=$base$t_name")}, "tree") .
1798                               " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=history;hb=$hash_base;f=$base$t_name")}, "history") .
1799                               "</td>\n";
1800                 }
1801                 print "</tr>\n";
1802         }
1803         print "</table>\n" .
1804               "</div>";
1805         git_footer_html();
1806 }
1807
1808 sub git_log {
1809         my $head = git_read_head($project);
1810         if (!defined $hash) {
1811                 $hash = $head;
1812         }
1813         if (!defined $page) {
1814                 $page = 0;
1815         }
1816         my $refs = read_info_ref();
1817
1818         my $limit = sprintf("--max-count=%i", (100 * ($page+1)));
1819         open my $fd, "-|", $GIT, "rev-list", $limit, $hash
1820                 or die_error(undef, "Open git-rev-list failed");
1821         my @revlist = map { chomp; $_ } <$fd>;
1822         close $fd;
1823
1824         my $paging_nav = git_get_paging_nav('log', $hash, $head, $page, $#revlist);
1825
1826         git_header_html();
1827         git_page_nav('log','', $hash,undef,undef, $paging_nav);
1828
1829         if (!@revlist) {
1830                 my %co = git_read_commit($hash);
1831
1832                 git_header_div('summary', $project);
1833                 print "<div class=\"page_body\"> Last change $co{'age_string'}.<br/><br/></div>\n";
1834         }
1835         for (my $i = ($page * 100); $i <= $#revlist; $i++) {
1836                 my $commit = $revlist[$i];
1837                 my $ref = git_get_referencing($refs, $commit);
1838                 my %co = git_read_commit($commit);
1839                 next if !%co;
1840                 my %ad = date_str($co{'author_epoch'});
1841                 git_header_div('commit',
1842                                                                          "<span class=\"age\">$co{'age_string'}</span>" .
1843                                                                          esc_html($co{'title'}) . $ref,
1844                                                                          $commit);
1845                 print "<div class=\"title_text\">\n" .
1846                       "<div class=\"log_link\">\n" .
1847                       $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commit;h=$commit")}, "commit") .
1848                       " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commitdiff;h=$commit")}, "commitdiff") .
1849                       "<br/>\n" .
1850                       "</div>\n" .
1851                       "<i>" . esc_html($co{'author_name'}) .  " [$ad{'rfc2822'}]</i><br/>\n" .
1852                       "</div>\n" .
1853                       "<div class=\"log_body\">\n";
1854                 my $comment = $co{'comment'};
1855                 my $empty = 0;
1856                 foreach my $line (@$comment) {
1857                         if ($line =~ m/^ *(signed[ \-]off[ \-]by[ :]|acked[ \-]by[ :]|cc[ :])/i) {
1858                                 next;
1859                         }
1860                         if ($line eq "") {
1861                                 if ($empty) {
1862                                         next;
1863                                 }
1864                                 $empty = 1;
1865                         } else {
1866                                 $empty = 0;
1867                         }
1868                         print format_log_line_html($line) . "<br/>\n";
1869                 }
1870                 if (!$empty) {
1871                         print "<br/>\n";
1872                 }
1873                 print "</div>\n";
1874         }
1875         git_footer_html();
1876 }
1877
1878 sub git_commit {
1879         my %co = git_read_commit($hash);
1880         if (!%co) {
1881                 die_error(undef, "Unknown commit object");
1882         }
1883         my %ad = date_str($co{'author_epoch'}, $co{'author_tz'});
1884         my %cd = date_str($co{'committer_epoch'}, $co{'committer_tz'});
1885
1886         my $parent = $co{'parent'};
1887         if (!defined $parent) {
1888                 $parent = "--root";
1889         }
1890         open my $fd, "-|", $GIT, "diff-tree", '-r', '-M', $parent, $hash
1891                 or die_error(undef, "Open git-diff-tree failed");
1892         my @difftree = map { chomp; $_ } <$fd>;
1893         close $fd or die_error(undef, "Reading git-diff-tree failed");
1894
1895         # non-textual hash id's can be cached
1896         my $expires;
1897         if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
1898                 $expires = "+1d";
1899         }
1900         my $refs = read_info_ref();
1901         my $ref = git_get_referencing($refs, $co{'id'});
1902         my $formats_nav = '';
1903         if (defined $file_name && defined $co{'parent'}) {
1904                 my $parent = $co{'parent'};
1905                 $formats_nav .= $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blame;hb=$parent;f=$file_name")}, "blame");
1906         }
1907         git_header_html(undef, $expires);
1908         git_page_nav('commit', defined $co{'parent'} ? '' : 'commitdiff',
1909                                                          $hash, $co{'tree'}, $hash,
1910                                                          $formats_nav);
1911
1912         if (defined $co{'parent'}) {
1913                 git_header_div('commitdiff', esc_html($co{'title'}) . $ref, $hash);
1914         } else {
1915                 git_header_div('tree', esc_html($co{'title'}) . $ref, $co{'tree'}, $hash);
1916         }
1917         print "<div class=\"title_text\">\n" .
1918               "<table cellspacing=\"0\">\n";
1919         print "<tr><td>author</td><td>" . esc_html($co{'author'}) . "</td></tr>\n".
1920               "<tr>" .
1921               "<td></td><td> $ad{'rfc2822'}";
1922         if ($ad{'hour_local'} < 6) {
1923                 printf(" (<span class=\"atnight\">%02d:%02d</span> %s)", $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
1924         } else {
1925                 printf(" (%02d:%02d %s)", $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
1926         }
1927         print "</td>" .
1928               "</tr>\n";
1929         print "<tr><td>committer</td><td>" . esc_html($co{'committer'}) . "</td></tr>\n";
1930         print "<tr><td></td><td> $cd{'rfc2822'}" . sprintf(" (%02d:%02d %s)", $cd{'hour_local'}, $cd{'minute_local'}, $cd{'tz_local'}) . "</td></tr>\n";
1931         print "<tr><td>commit</td><td class=\"sha1\">$co{'id'}</td></tr>\n";
1932         print "<tr>" .
1933               "<td>tree</td>" .
1934               "<td class=\"sha1\">" .
1935               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=tree;h=$co{'tree'};hb=$hash"), class => "list"}, $co{'tree'}) .
1936               "</td>" .
1937               "<td class=\"link\">" . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=tree;h=$co{'tree'};hb=$hash")}, "tree") .
1938               "</td>" .
1939               "</tr>\n";
1940         my $parents = $co{'parents'};
1941         foreach my $par (@$parents) {
1942                 print "<tr>" .
1943                       "<td>parent</td>" .
1944                       "<td class=\"sha1\">" . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commit;h=$par"), class => "list"}, $par) . "</td>" .
1945                       "<td class=\"link\">" .
1946                       $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commit;h=$par")}, "commit") .
1947                       " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commitdiff;h=$hash;hp=$par")}, "commitdiff") .
1948                       "</td>" .
1949                       "</tr>\n";
1950         }
1951         print "</table>".
1952               "</div>\n";
1953         print "<div class=\"page_body\">\n";
1954         my $comment = $co{'comment'};
1955         my $empty = 0;
1956         my $signed = 0;
1957         foreach my $line (@$comment) {
1958                 # print only one empty line
1959                 if ($line eq "") {
1960                         if ($empty || $signed) {
1961                                 next;
1962                         }
1963                         $empty = 1;
1964                 } else {
1965                         $empty = 0;
1966                 }
1967                 if ($line =~ m/^ *(signed[ \-]off[ \-]by[ :]|acked[ \-]by[ :]|cc[ :])/i) {
1968                         $signed = 1;
1969                         print "<span class=\"signoff\">" . esc_html($line) . "</span><br/>\n";
1970                 } else {
1971                         $signed = 0;
1972                         print format_log_line_html($line) . "<br/>\n";
1973                 }
1974         }
1975         print "</div>\n";
1976         print "<div class=\"list_head\">\n";
1977         if ($#difftree > 10) {
1978                 print(($#difftree + 1) . " files changed:\n");
1979         }
1980         print "</div>\n";
1981         print "<table class=\"diff_tree\">\n";
1982         my $alternate = 0;
1983         foreach my $line (@difftree) {
1984                 # ':100644 100644 03b218260e99b78c6df0ed378e59ed9205ccc96d 3b93d5e7cc7f7dd4ebed13a5cc1a4ad976fc94d8 M      ls-files.c'
1985                 # ':100644 100644 7f9281985086971d3877aca27704f2aaf9c448ce bc190ebc71bbd923f2b728e505408f5e54bd073a M      rev-tree.c'
1986                 if ($line !~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)([0-9]{0,3})\t(.*)$/) {
1987                         next;
1988                 }
1989                 my $from_mode = $1;
1990                 my $to_mode = $2;
1991                 my $from_id = $3;
1992                 my $to_id = $4;
1993                 my $status = $5;
1994                 my $similarity = $6;
1995                 my $file = validate_input(unquote($7));
1996                 if ($alternate) {
1997                         print "<tr class=\"dark\">\n";
1998                 } else {
1999                         print "<tr class=\"light\">\n";
2000                 }
2001                 $alternate ^= 1;
2002                 if ($status eq "A") {
2003                         my $mode_chng = "";
2004                         if (S_ISREG(oct $to_mode)) {
2005                                 $mode_chng = sprintf(" with mode: %04o", (oct $to_mode) & 0777);
2006                         }
2007                         print "<td>" .
2008                               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;h=$to_id;hb=$hash;f=$file"), -class => "list"}, esc_html($file)) . "</td>\n" .
2009                               "<td><span class=\"file_status new\">[new " . file_type($to_mode) . "$mode_chng]</span></td>\n" .
2010                               "<td class=\"link\">" . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;h=$to_id;hb=$hash;f=$file")}, "blob") . "</td>\n";
2011                 } elsif ($status eq "D") {
2012                         print "<td>" .
2013                               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;h=$from_id;hb=$hash;f=$file"), -class => "list"}, esc_html($file)) . "</td>\n" .
2014                               "<td><span class=\"file_status deleted\">[deleted " . file_type($from_mode). "]</span></td>\n" .
2015                               "<td class=\"link\">" .
2016                               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;h=$from_id;hb=$hash;f=$file")}, "blob") .
2017                               " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=history;hb=$hash;f=$file")}, "history") .
2018                               "</td>\n"
2019                 } elsif ($status eq "M" || $status eq "T") {
2020                         my $mode_chnge = "";
2021                         if ($from_mode != $to_mode) {
2022                                 $mode_chnge = " <span class=\"file_status mode_chnge\">[changed";
2023                                 if (((oct $from_mode) & S_IFMT) != ((oct $to_mode) & S_IFMT)) {
2024                                         $mode_chnge .= " from " . file_type($from_mode) . " to " . file_type($to_mode);
2025                                 }
2026                                 if (((oct $from_mode) & 0777) != ((oct $to_mode) & 0777)) {
2027                                         if (S_ISREG($from_mode) && S_ISREG($to_mode)) {
2028                                                 $mode_chnge .= sprintf(" mode: %04o->%04o", (oct $from_mode) & 0777, (oct $to_mode) & 0777);
2029                                         } elsif (S_ISREG($to_mode)) {
2030                                                 $mode_chnge .= sprintf(" mode: %04o", (oct $to_mode) & 0777);
2031                                         }
2032                                 }
2033                                 $mode_chnge .= "]</span>\n";
2034                         }
2035                         print "<td>";
2036                         if ($to_id ne $from_id) {
2037                                 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));
2038                         } else {
2039                                 print $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;h=$to_id;hb=$hash;f=$file"), -class => "list"}, esc_html($file));
2040                         }
2041                         print "</td>\n" .
2042                               "<td>$mode_chnge</td>\n" .
2043                               "<td class=\"link\">";
2044                         print $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;h=$to_id;hb=$hash;f=$file")}, "blob");
2045                         if ($to_id ne $from_id) {
2046                                 print " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blobdiff;h=$to_id;hp=$from_id;hb=$hash;f=$file")}, "diff");
2047                         }
2048                         print " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=history;hb=$hash;f=$file")}, "history") . "\n";
2049                         print "</td>\n";
2050                 } elsif ($status eq "R") {
2051                         my ($from_file, $to_file) = split "\t", $file;
2052                         my $mode_chng = "";
2053                         if ($from_mode != $to_mode) {
2054                                 $mode_chng = sprintf(", mode: %04o", (oct $to_mode) & 0777);
2055                         }
2056                         print "<td>" .
2057                               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;h=$to_id;hb=$hash;f=$to_file"), -class => "list"}, esc_html($to_file)) . "</td>\n" .
2058                               "<td><span class=\"file_status moved\">[moved from " .
2059                               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;h=$from_id;hb=$hash;f=$from_file"), -class => "list"}, esc_html($from_file)) .
2060                               " with " . (int $similarity) . "% similarity$mode_chng]</span></td>\n" .
2061                               "<td class=\"link\">" .
2062                               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;h=$to_id;hb=$hash;f=$to_file")}, "blob");
2063                         if ($to_id ne $from_id) {
2064                                 print " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blobdiff;h=$to_id;hp=$from_id;hb=$hash;f=$to_file")}, "diff");
2065                         }
2066                         print "</td>\n";
2067                 }
2068                 print "</tr>\n";
2069         }
2070         print "</table>\n";
2071         git_footer_html();
2072 }
2073
2074 sub git_blobdiff {
2075         mkdir($git_temp, 0700);
2076         git_header_html();
2077         if (defined $hash_base && (my %co = git_read_commit($hash_base))) {
2078                 my $formats_nav =
2079                         $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blobdiff_plain;h=$hash;hp=$hash_parent")}, "plain");
2080                 git_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
2081                 git_header_div('commit', esc_html($co{'title'}), $hash_base);
2082         } else {
2083                 print "<div class=\"page_nav\">\n" .
2084                       "<br/><br/></div>\n" .
2085                       "<div class=\"title\">$hash vs $hash_parent</div>\n";
2086         }
2087         git_print_page_path($file_name, "blob");
2088         print "<div class=\"page_body\">\n" .
2089               "<div class=\"diff_info\">blob:" .
2090               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;h=$hash_parent;hb=$hash_base;f=$file_name")}, $hash_parent) .
2091               " -> blob:" .
2092               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;h=$hash;hb=$hash_base;f=$file_name")}, $hash) .
2093               "</div>\n";
2094         git_diff_print($hash_parent, $file_name || $hash_parent, $hash, $file_name || $hash);
2095         print "</div>";
2096         git_footer_html();
2097 }
2098
2099 sub git_blobdiff_plain {
2100         mkdir($git_temp, 0700);
2101         print $cgi->header(-type => "text/plain", -charset => 'utf-8');
2102         git_diff_print($hash_parent, $file_name || $hash_parent, $hash, $file_name || $hash, "plain");
2103 }
2104
2105 sub git_commitdiff {
2106         mkdir($git_temp, 0700);
2107         my %co = git_read_commit($hash);
2108         if (!%co) {
2109                 die_error(undef, "Unknown commit object");
2110         }
2111         if (!defined $hash_parent) {
2112                 $hash_parent = $co{'parent'} || '--root';
2113         }
2114         open my $fd, "-|", $GIT, "diff-tree", '-r', $hash_parent, $hash
2115                 or die_error(undef, "Open git-diff-tree failed");
2116         my @difftree = map { chomp; $_ } <$fd>;
2117         close $fd or die_error(undef, "Reading git-diff-tree failed");
2118
2119         # non-textual hash id's can be cached
2120         my $expires;
2121         if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
2122                 $expires = "+1d";
2123         }
2124         my $refs = read_info_ref();
2125         my $ref = git_get_referencing($refs, $co{'id'});
2126         my $formats_nav =
2127                 $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commitdiff_plain;h=$hash;hp=$hash_parent")}, "plain");
2128         git_header_html(undef, $expires);
2129         git_page_nav('commitdiff','', $hash,$co{'tree'},$hash, $formats_nav);
2130         git_header_div('commit', esc_html($co{'title'}) . $ref, $hash);
2131         print "<div class=\"page_body\">\n";
2132         my $comment = $co{'comment'};
2133         my $empty = 0;
2134         my $signed = 0;
2135         my @log = @$comment;
2136         # remove first and empty lines after that
2137         shift @log;
2138         while (defined $log[0] && $log[0] eq "") {
2139                 shift @log;
2140         }
2141         foreach my $line (@log) {
2142                 if ($line =~ m/^ *(signed[ \-]off[ \-]by[ :]|acked[ \-]by[ :]|cc[ :])/i) {
2143                         next;
2144                 }
2145                 if ($line eq "") {
2146                         if ($empty) {
2147                                 next;
2148                         }
2149                         $empty = 1;
2150                 } else {
2151                         $empty = 0;
2152                 }
2153                 print format_log_line_html($line) . "<br/>\n";
2154         }
2155         print "<br/>\n";
2156         foreach my $line (@difftree) {
2157                 # ':100644 100644 03b218260e99b78c6df0ed378e59ed9205ccc96d 3b93d5e7cc7f7dd4ebed13a5cc1a4ad976fc94d8 M      ls-files.c'
2158                 # ':100644 100644 7f9281985086971d3877aca27704f2aaf9c448ce bc190ebc71bbd923f2b728e505408f5e54bd073a M      rev-tree.c'
2159                 if ($line !~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)\t(.*)$/) {
2160                         next;
2161                 }
2162                 my $from_mode = $1;
2163                 my $to_mode = $2;
2164                 my $from_id = $3;
2165                 my $to_id = $4;
2166                 my $status = $5;
2167                 my $file = validate_input(unquote($6));
2168                 if ($status eq "A") {
2169                         print "<div class=\"diff_info\">" . file_type($to_mode) . ":" .
2170                               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;h=$to_id;hb=$hash;f=$file")}, $to_id) . "(new)" .
2171                               "</div>\n";
2172                         git_diff_print(undef, "/dev/null", $to_id, "b/$file");
2173                 } elsif ($status eq "D") {
2174                         print "<div class=\"diff_info\">" . file_type($from_mode) . ":" .
2175                               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;h=$from_id;hb=$hash;f=$file")}, $from_id) . "(deleted)" .
2176                               "</div>\n";
2177                         git_diff_print($from_id, "a/$file", undef, "/dev/null");
2178                 } elsif ($status eq "M") {
2179                         if ($from_id ne $to_id) {
2180                                 print "<div class=\"diff_info\">" .
2181                                       file_type($from_mode) . ":" . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;h=$from_id;hb=$hash;f=$file")}, $from_id) .
2182                                       " -> " .
2183                                       file_type($to_mode) . ":" . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;h=$to_id;hb=$hash;f=$file")}, $to_id);
2184                                 print "</div>\n";
2185                                 git_diff_print($from_id, "a/$file",  $to_id, "b/$file");
2186                         }
2187                 }
2188         }
2189         print "<br/>\n" .
2190               "</div>";
2191         git_footer_html();
2192 }
2193
2194 sub git_commitdiff_plain {
2195         mkdir($git_temp, 0700);
2196         open my $fd, "-|", $GIT, "diff-tree", '-r', $hash_parent, $hash
2197                 or die_error(undef, "Open git-diff-tree failed");
2198         my @difftree = map { chomp; $_ } <$fd>;
2199         close $fd or die_error(undef, "Reading diff-tree failed");
2200
2201         # try to figure out the next tag after this commit
2202         my $tagname;
2203         my $refs = read_info_ref("tags");
2204         open $fd, "-|", $GIT, "rev-list", "HEAD";
2205         my @commits = map { chomp; $_ } <$fd>;
2206         close $fd;
2207         foreach my $commit (@commits) {
2208                 if (defined $refs->{$commit}) {
2209                         $tagname = $refs->{$commit}
2210                 }
2211                 if ($commit eq $hash) {
2212                         last;
2213                 }
2214         }
2215
2216         print $cgi->header(-type => "text/plain", -charset => 'utf-8', '-content-disposition' => "inline; filename=\"git-$hash.patch\"");
2217         my %co = git_read_commit($hash);
2218         my %ad = date_str($co{'author_epoch'}, $co{'author_tz'});
2219         my $comment = $co{'comment'};
2220         print "From: $co{'author'}\n" .
2221               "Date: $ad{'rfc2822'} ($ad{'tz_local'})\n".
2222               "Subject: $co{'title'}\n";
2223         if (defined $tagname) {
2224                 print "X-Git-Tag: $tagname\n";
2225         }
2226         print "X-Git-Url: $my_url?p=$project;a=commitdiff;h=$hash\n" .
2227               "\n";
2228
2229         foreach my $line (@$comment) {;
2230                 print "$line\n";
2231         }
2232         print "---\n\n";
2233
2234         foreach my $line (@difftree) {
2235                 if ($line !~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)\t(.*)$/) {
2236                         next;
2237                 }
2238                 my $from_id = $3;
2239                 my $to_id = $4;
2240                 my $status = $5;
2241                 my $file = $6;
2242                 if ($status eq "A") {
2243                         git_diff_print(undef, "/dev/null", $to_id, "b/$file", "plain");
2244                 } elsif ($status eq "D") {
2245                         git_diff_print($from_id, "a/$file", undef, "/dev/null", "plain");
2246                 } elsif ($status eq "M") {
2247                         git_diff_print($from_id, "a/$file",  $to_id, "b/$file", "plain");
2248                 }
2249         }
2250 }
2251
2252 sub git_history {
2253         if (!defined $hash_base) {
2254                 $hash_base = git_read_head($project);
2255         }
2256         my $ftype;
2257         my %co = git_read_commit($hash_base);
2258         if (!%co) {
2259                 die_error(undef, "Unknown commit object");
2260         }
2261         my $refs = read_info_ref();
2262         git_header_html();
2263         git_page_nav('','', $hash_base,$co{'tree'},$hash_base);
2264         git_header_div('commit', esc_html($co{'title'}), $hash_base);
2265         if (!defined $hash && defined $file_name) {
2266                 $hash = git_get_hash_by_path($hash_base, $file_name);
2267         }
2268         if (defined $hash) {
2269                 $ftype = git_get_type($hash);
2270         }
2271         git_print_page_path($file_name, $ftype);
2272
2273         open my $fd, "-|",
2274                 $GIT, "rev-list", "--full-history", $hash_base, "--", $file_name;
2275         print "<table cellspacing=\"0\">\n";
2276         my $alternate = 0;
2277         while (my $line = <$fd>) {
2278                 if ($line =~ m/^([0-9a-fA-F]{40})/){
2279                         my $commit = $1;
2280                         my %co = git_read_commit($commit);
2281                         if (!%co) {
2282                                 next;
2283                         }
2284                         my $ref = git_get_referencing($refs, $commit);
2285                         if ($alternate) {
2286                                 print "<tr class=\"dark\">\n";
2287                         } else {
2288                                 print "<tr class=\"light\">\n";
2289                         }
2290                         $alternate ^= 1;
2291                         print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
2292                               "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 3)) . "</i></td>\n" .
2293                               "<td>" . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commit;h=$commit"), -class => "list"}, "<b>" .
2294                               esc_html(chop_str($co{'title'}, 50)) . "$ref</b>") . "</td>\n" .
2295                               "<td class=\"link\">" .
2296                               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commit;h=$commit")}, "commit") .
2297                               " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commitdiff;h=$commit")}, "commitdiff") .
2298                               " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=$ftype;hb=$commit;f=$file_name")}, $ftype);
2299                         my $blob = git_get_hash_by_path($hash_base, $file_name);
2300                         my $blob_parent = git_get_hash_by_path($commit, $file_name);
2301                         if (defined $blob && defined $blob_parent && $blob ne $blob_parent) {
2302                                 print " | " .
2303                                 $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blobdiff;h=$blob;hp=$blob_parent;hb=$commit;f=$file_name")},
2304                                 "diff to current");
2305                         }
2306                         print "</td>\n" .
2307                               "</tr>\n";
2308                 }
2309         }
2310         print "</table>\n";
2311         close $fd;
2312         git_footer_html();
2313 }
2314
2315 sub git_search {
2316         if (!defined $searchtext) {
2317                 die_error(undef, "Text field empty");
2318         }
2319         if (!defined $hash) {
2320                 $hash = git_read_head($project);
2321         }
2322         my %co = git_read_commit($hash);
2323         if (!%co) {
2324                 die_error(undef, "Unknown commit object");
2325         }
2326         # pickaxe may take all resources of your box and run for several minutes
2327         # with every query - so decide by yourself how public you make this feature :)
2328         my $commit_search = 1;
2329         my $author_search = 0;
2330         my $committer_search = 0;
2331         my $pickaxe_search = 0;
2332         if ($searchtext =~ s/^author\\://i) {
2333                 $author_search = 1;
2334         } elsif ($searchtext =~ s/^committer\\://i) {
2335                 $committer_search = 1;
2336         } elsif ($searchtext =~ s/^pickaxe\\://i) {
2337                 $commit_search = 0;
2338                 $pickaxe_search = 1;
2339         }
2340         git_header_html();
2341         git_page_nav('','', $hash,$co{'tree'},$hash);
2342         git_header_div('commit', esc_html($co{'title'}), $hash);
2343
2344         print "<table cellspacing=\"0\">\n";
2345         my $alternate = 0;
2346         if ($commit_search) {
2347                 $/ = "\0";
2348                 open my $fd, "-|", $GIT, "rev-list", "--header", "--parents", $hash or next;
2349                 while (my $commit_text = <$fd>) {
2350                         if (!grep m/$searchtext/i, $commit_text) {
2351                                 next;
2352                         }
2353                         if ($author_search && !grep m/\nauthor .*$searchtext/i, $commit_text) {
2354                                 next;
2355                         }
2356                         if ($committer_search && !grep m/\ncommitter .*$searchtext/i, $commit_text) {
2357                                 next;
2358                         }
2359                         my @commit_lines = split "\n", $commit_text;
2360                         my %co = git_read_commit(undef, \@commit_lines);
2361                         if (!%co) {
2362                                 next;
2363                         }
2364                         if ($alternate) {
2365                                 print "<tr class=\"dark\">\n";
2366                         } else {
2367                                 print "<tr class=\"light\">\n";
2368                         }
2369                         $alternate ^= 1;
2370                         print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
2371                               "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 5)) . "</i></td>\n" .
2372                               "<td>" .
2373                               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commit;h=$co{'id'}"), -class => "list"}, "<b>" . esc_html(chop_str($co{'title'}, 50)) . "</b><br/>");
2374                         my $comment = $co{'comment'};
2375                         foreach my $line (@$comment) {
2376                                 if ($line =~ m/^(.*)($searchtext)(.*)$/i) {
2377                                         my $lead = esc_html($1) || "";
2378                                         $lead = chop_str($lead, 30, 10);
2379                                         my $match = esc_html($2) || "";
2380                                         my $trail = esc_html($3) || "";
2381                                         $trail = chop_str($trail, 30, 10);
2382                                         my $text = "$lead<span class=\"match\">$match</span>$trail";
2383                                         print chop_str($text, 80, 5) . "<br/>\n";
2384                                 }
2385                         }
2386                         print "</td>\n" .
2387                               "<td class=\"link\">" .
2388                               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commit;h=$co{'id'}")}, "commit") .
2389                               " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=tree;h=$co{'tree'};hb=$co{'id'}")}, "tree");
2390                         print "</td>\n" .
2391                               "</tr>\n";
2392                 }
2393                 close $fd;
2394         }
2395
2396         if ($pickaxe_search) {
2397                 $/ = "\n";
2398                 open my $fd, "-|", "$GIT rev-list $hash | $GIT diff-tree -r --stdin -S\'$searchtext\'";
2399                 undef %co;
2400                 my @files;
2401                 while (my $line = <$fd>) {
2402                         if (%co && $line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)\t(.*)$/) {
2403                                 my %set;
2404                                 $set{'file'} = $6;
2405                                 $set{'from_id'} = $3;
2406                                 $set{'to_id'} = $4;
2407                                 $set{'id'} = $set{'to_id'};
2408                                 if ($set{'id'} =~ m/0{40}/) {
2409                                         $set{'id'} = $set{'from_id'};
2410                                 }
2411                                 if ($set{'id'} =~ m/0{40}/) {
2412                                         next;
2413                                 }
2414                                 push @files, \%set;
2415                         } elsif ($line =~ m/^([0-9a-fA-F]{40})$/){
2416                                 if (%co) {
2417                                         if ($alternate) {
2418                                                 print "<tr class=\"dark\">\n";
2419                                         } else {
2420                                                 print "<tr class=\"light\">\n";
2421                                         }
2422                                         $alternate ^= 1;
2423                                         print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
2424                                               "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 5)) . "</i></td>\n" .
2425                                               "<td>" .
2426                                               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commit;h=$co{'id'}"), -class => "list"}, "<b>" .
2427                                               esc_html(chop_str($co{'title'}, 50)) . "</b><br/>");
2428                                         while (my $setref = shift @files) {
2429                                                 my %set = %$setref;
2430                                                 print $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;h=$set{'id'};hb=$co{'id'};f=$set{'file'}"), class => "list"},
2431                                                       "<span class=\"match\">" . esc_html($set{'file'}) . "</span>") .
2432                                                       "<br/>\n";
2433                                         }
2434                                         print "</td>\n" .
2435                                               "<td class=\"link\">" .
2436                                               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commit;h=$co{'id'}")}, "commit") .
2437                                               " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=tree;h=$co{'tree'};hb=$co{'id'}")}, "tree");
2438                                         print "</td>\n" .
2439                                               "</tr>\n";
2440                                 }
2441                                 %co = git_read_commit($1);
2442                         }
2443                 }
2444                 close $fd;
2445         }
2446         print "</table>\n";
2447         git_footer_html();
2448 }
2449
2450 sub git_shortlog {
2451         my $head = git_read_head($project);
2452         if (!defined $hash) {
2453                 $hash = $head;
2454         }
2455         if (!defined $page) {
2456                 $page = 0;
2457         }
2458         my $refs = read_info_ref();
2459
2460         my $limit = sprintf("--max-count=%i", (100 * ($page+1)));
2461         open my $fd, "-|", $GIT, "rev-list", $limit, $hash
2462                 or die_error(undef, "Open git-rev-list failed");
2463         my @revlist = map { chomp; $_ } <$fd>;
2464         close $fd;
2465
2466         my $paging_nav = git_get_paging_nav('shortlog', $hash, $head, $page, $#revlist);
2467         my $next_link = '';
2468         if ($#revlist >= (100 * ($page+1)-1)) {
2469                 $next_link =
2470                         $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=shortlog;h=$hash;pg=" . ($page+1)),
2471                                  -title => "Alt-n"}, "next");
2472         }
2473
2474
2475         git_header_html();
2476         git_page_nav('shortlog','', $hash,$hash,$hash, $paging_nav);
2477         git_header_div('summary', $project);
2478
2479         git_shortlog_body(\@revlist, ($page * 100), $#revlist, $refs, $next_link);
2480
2481         git_footer_html();
2482 }
2483
2484 ## ......................................................................
2485 ## feeds (RSS, OPML)
2486
2487 sub git_rss {
2488         # http://www.notestips.com/80256B3A007F2692/1/NAMO5P9UPQ
2489         open my $fd, "-|", $GIT, "rev-list", "--max-count=150", git_read_head($project)
2490                 or die_error(undef, "Open git-rev-list failed");
2491         my @revlist = map { chomp; $_ } <$fd>;
2492         close $fd or die_error(undef, "Reading git-rev-list failed");
2493         print $cgi->header(-type => 'text/xml', -charset => 'utf-8');
2494         print "<?xml version=\"1.0\" encoding=\"utf-8\"?>\n".
2495               "<rss version=\"2.0\" xmlns:content=\"http://purl.org/rss/1.0/modules/content/\">\n";
2496         print "<channel>\n";
2497         print "<title>$project</title>\n".
2498               "<link>" . esc_html("$my_url?p=$project;a=summary") . "</link>\n".
2499               "<description>$project log</description>\n".
2500               "<language>en</language>\n";
2501
2502         for (my $i = 0; $i <= $#revlist; $i++) {
2503                 my $commit = $revlist[$i];
2504                 my %co = git_read_commit($commit);
2505                 # we read 150, we always show 30 and the ones more recent than 48 hours
2506                 if (($i >= 20) && ((time - $co{'committer_epoch'}) > 48*60*60)) {
2507                         last;
2508                 }
2509                 my %cd = date_str($co{'committer_epoch'});
2510                 open $fd, "-|", $GIT, "diff-tree", '-r', $co{'parent'}, $co{'id'} or next;
2511                 my @difftree = map { chomp; $_ } <$fd>;
2512                 close $fd or next;
2513                 print "<item>\n" .
2514                       "<title>" .
2515                       sprintf("%d %s %02d:%02d", $cd{'mday'}, $cd{'month'}, $cd{'hour'}, $cd{'minute'}) . " - " . esc_html($co{'title'}) .
2516                       "</title>\n" .
2517                       "<author>" . esc_html($co{'author'}) . "</author>\n" .
2518                       "<pubDate>$cd{'rfc2822'}</pubDate>\n" .
2519                       "<guid isPermaLink=\"true\">" . esc_html("$my_url?p=$project;a=commit;h=$commit") . "</guid>\n" .
2520                       "<link>" . esc_html("$my_url?p=$project;a=commit;h=$commit") . "</link>\n" .
2521                       "<description>" . esc_html($co{'title'}) . "</description>\n" .
2522                       "<content:encoded>" .
2523                       "<![CDATA[\n";
2524                 my $comment = $co{'comment'};
2525                 foreach my $line (@$comment) {
2526                         $line = decode("utf8", $line, Encode::FB_DEFAULT);
2527                         print "$line<br/>\n";
2528                 }
2529                 print "<br/>\n";
2530                 foreach my $line (@difftree) {
2531                         if (!($line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)([0-9]{0,3})\t(.*)$/)) {
2532                                 next;
2533                         }
2534                         my $file = validate_input(unquote($7));
2535                         $file = decode("utf8", $file, Encode::FB_DEFAULT);
2536                         print "$file<br/>\n";
2537                 }
2538                 print "]]>\n" .
2539                       "</content:encoded>\n" .
2540                       "</item>\n";
2541         }
2542         print "</channel></rss>";
2543 }
2544
2545 sub git_opml {
2546         my @list = git_read_projects();
2547
2548         print $cgi->header(-type => 'text/xml', -charset => 'utf-8');
2549         print "<?xml version=\"1.0\" encoding=\"utf-8\"?>\n".
2550               "<opml version=\"1.0\">\n".
2551               "<head>".
2552               "  <title>$site_name Git OPML Export</title>\n".
2553               "</head>\n".
2554               "<body>\n".
2555               "<outline text=\"git RSS feeds\">\n";
2556
2557         foreach my $pr (@list) {
2558                 my %proj = %$pr;
2559                 my $head = git_read_head($proj{'path'});
2560                 if (!defined $head) {
2561                         next;
2562                 }
2563                 $ENV{'GIT_DIR'} = "$projectroot/$proj{'path'}";
2564                 my %co = git_read_commit($head);
2565                 if (!%co) {
2566                         next;
2567                 }
2568
2569                 my $path = esc_html(chop_str($proj{'path'}, 25, 5));
2570                 my $rss  = "$my_url?p=$proj{'path'};a=rss";
2571                 my $html = "$my_url?p=$proj{'path'};a=summary";
2572                 print "<outline type=\"rss\" text=\"$path\" title=\"$path\" xmlUrl=\"$rss\" htmlUrl=\"$html\"/>\n";
2573         }
2574         print "</outline>\n".
2575               "</body>\n".
2576               "</opml>\n";
2577 }