gitweb/gitweb.cgi

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