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 binmode STDOUT, ':utf8';
  18
  19 our $cgi = new CGI;
  20 our $version = "267";
  21 our $my_url = $cgi->url();
  22 our $my_uri = $cgi->url(-absolute => 1);
  23 our $rss_link = "";
  24
  25 # core git executable to use
  26 # this can just be "git" if your webserver has a sensible PATH
  27 our $GIT = "/usr/bin/git";
  28
  29 # absolute fs-path which will be prepended to the project path
  30 #our $projectroot = "/pub/scm";
  31 our $projectroot = "/home/kay/public_html/pub/scm";
  32
  33 # version of the core git binary
  34 our $git_version = qx($GIT --version) =~ m/git version (.*)$/ ? $1 : "unknown";
  35
  36 # location for temporary files needed for diffs
  37 our $git_temp = "/tmp/gitweb";
  38 if (! -d $git_temp) {
  39         mkdir($git_temp, 0700) || die_error("Couldn't mkdir $git_temp");
  40 }
  41
  42 # target of the home link on top of all pages
  43 our $home_link = $my_uri;
  44
  45 # name of your site or organization to appear in page titles
  46 # replace this with something more descriptive for clearer bookmarks
  47 our $site_name = $ENV{'SERVER_NAME'} || "Untitled";
  48
  49 # html text to include at home page
  50 our $home_text = "indextext.html";
  51
  52 # URI of default stylesheet
  53 our $stylesheet = "gitweb.css";
  54
  55 # source of projects list
  56 #our $projects_list = $projectroot;
  57 our $projects_list = "index/index.aux";
  58
  59 # default blob_plain mimetype and default charset for text/plain blob
  60 our $default_blob_plain_mimetype = 'text/plain';
  61 our $default_text_plain_charset  = undef;
  62
  63 # file to use for guessing MIME types before trying /etc/mime.types
  64 # (relative to the current git repository)
  65 our $mimetypes_file = undef;
  66
  67 # input validation and dispatch
  68 our $action = $cgi->param('a');
  69 if (defined $action) {
  70         if ($action =~ m/[^0-9a-zA-Z\.\-_]/) {
  71                 undef $action;
  72                 die_error(undef, "Invalid action parameter.");
  73         }
  74         if ($action eq "git-logo.png") {
  75                 git_logo();
  76                 exit;
  77         } elsif ($action eq "opml") {
  78                 git_opml();
  79                 exit;
  80         }
  81 }
  82
  83 our $order = $cgi->param('o');
  84 if (defined $order) {
  85         if ($order =~ m/[^0-9a-zA-Z_]/) {
  86                 undef $order;
  87                 die_error(undef, "Invalid order parameter.");
  88         }
  89 }
  90
  91 our $project = ($cgi->param('p') || $ENV{'PATH_INFO'});
  92 if (defined $project) {
  93         $project =~ s|^/||; $project =~ s|/$||;
  94         $project = validate_input($project);
  95         if (!defined($project)) {
  96                 die_error(undef, "Invalid project parameter.");
  97         }
  98         if (!(-d "$projectroot/$project")) {
  99                 undef $project;
 100                 die_error(undef, "No such directory.");
 101         }
 102         if (!(-e "$projectroot/$project/HEAD")) {
 103                 undef $project;
 104                 die_error(undef, "No such project.");
 105         }
 106         $rss_link = "<link rel=\"alternate\" title=\"" . esc_param($project) . " log\" href=\"" .
 107                     "$my_uri?" . esc_param("p=$project;a=rss") . "\" type=\"application/rss+xml\"/>";
 108         $ENV{'GIT_DIR'} = "$projectroot/$project";
 109 } else {
 110         git_project_list();
 111         exit;
 112 }
 113
 114 our $file_name = $cgi->param('f');
 115 if (defined $file_name) {
 116         $file_name = validate_input($file_name);
 117         if (!defined($file_name)) {
 118                 die_error(undef, "Invalid file parameter.");
 119         }
 120 }
 121
 122 our $hash = $cgi->param('h');
 123 if (defined $hash) {
 124         $hash = validate_input($hash);
 125         if (!defined($hash)) {
 126                 die_error(undef, "Invalid hash parameter.");
 127         }
 128 }
 129
 130 our $hash_parent = $cgi->param('hp');
 131 if (defined $hash_parent) {
 132         $hash_parent = validate_input($hash_parent);
 133         if (!defined($hash_parent)) {
 134                 die_error(undef, "Invalid hash parent parameter.");
 135         }
 136 }
 137
 138 our $hash_base = $cgi->param('hb');
 139 if (defined $hash_base) {
 140         $hash_base = validate_input($hash_base);
 141         if (!defined($hash_base)) {
 142                 die_error(undef, "Invalid hash base parameter.");
 143         }
 144 }
 145
 146 our $page = $cgi->param('pg');
 147 if (defined $page) {
 148         if ($page =~ m/[^0-9]$/) {
 149                 undef $page;
 150                 die_error(undef, "Invalid page parameter.");
 151         }
 152 }
 153
 154 our $searchtext = $cgi->param('s');
 155 if (defined $searchtext) {
 156         if ($searchtext =~ m/[^a-zA-Z0-9_\.\/\-\+\:\@ ]/) {
 157                 undef $searchtext;
 158                 die_error(undef, "Invalid search parameter.");
 159         }
 160         $searchtext = quotemeta $searchtext;
 161 }
 162
 163 # dispatch
 164 if (!defined $action || $action eq "summary") {
 165         git_summary();
 166         exit;
 167 } elsif ($action eq "heads") {
 168         git_heads();
 169         exit;
 170 } elsif ($action eq "tags") {
 171         git_tags();
 172         exit;
 173 } elsif ($action eq "blob") {
 174         git_blob();
 175         exit;
 176 } elsif ($action eq "blob_plain") {
 177         git_blob_plain();
 178         exit;
 179 } elsif ($action eq "tree") {
 180         git_tree();
 181         exit;
 182 } elsif ($action eq "rss") {
 183         git_rss();
 184         exit;
 185 } elsif ($action eq "commit") {
 186         git_commit();
 187         exit;
 188 } elsif ($action eq "log") {
 189         git_log();
 190         exit;
 191 } elsif ($action eq "blobdiff") {
 192         git_blobdiff();
 193         exit;
 194 } elsif ($action eq "blobdiff_plain") {
 195         git_blobdiff_plain();
 196         exit;
 197 } elsif ($action eq "commitdiff") {
 198         git_commitdiff();
 199         exit;
 200 } elsif ($action eq "commitdiff_plain") {
 201         git_commitdiff_plain();
 202         exit;
 203 } elsif ($action eq "history") {
 204         git_history();
 205         exit;
 206 } elsif ($action eq "search") {
 207         git_search();
 208         exit;
 209 } elsif ($action eq "shortlog") {
 210         git_shortlog();
 211         exit;
 212 } elsif ($action eq "tag") {
 213         git_tag();
 214         exit;
 215 } elsif ($action eq "blame") {
 216         git_blame2();
 217         exit;
 218 } else {
 219         undef $action;
 220         die_error(undef, "Unknown action.");
 221         exit;
 222 }
 223
 224 ## ======================================================================
 225 ## validation, quoting/unquoting and escaping
 226
 227 sub validate_input {
 228         my $input = shift;
 229
 230         if ($input =~ m/^[0-9a-fA-F]{40}$/) {
 231                 return $input;
 232         }
 233         if ($input =~ m/(^|\/)(|\.|\.\.)($|\/)/) {
 234                 return undef;
 235         }
 236         if ($input =~ m/[^a-zA-Z0-9_\x80-\xff\ \t\.\/\-\+\#\~\%]/) {
 237                 return undef;
 238         }
 239         return $input;
 240 }
 241
 242 # quote unsafe chars, but keep the slash, even when it's not
 243 # correct, but quoted slashes look too horrible in bookmarks
 244 sub esc_param {
 245         my $str = shift;
 246         $str =~ s/([^A-Za-z0-9\-_.~();\/;?:@&=])/sprintf("%%%02X", ord($1))/eg;
 247         $str =~ s/\+/%2B/g;
 248         $str =~ s/ /\+/g;
 249         return $str;
 250 }
 251
 252 # replace invalid utf8 character with SUBSTITUTION sequence
 253 sub esc_html {
 254         my $str = shift;
 255         $str = decode("utf8", $str, Encode::FB_DEFAULT);
 256         $str = escapeHTML($str);
 257         $str =~ s/\014/^L/g; # escape FORM FEED (FF) character (e.g. in COPYING file)
 258         return $str;
 259 }
 260
 261 # git may return quoted and escaped filenames
 262 sub unquote {
 263         my $str = shift;
 264         if ($str =~ m/^"(.*)"$/) {
 265                 $str = $1;
 266                 $str =~ s/\\([0-7]{1,3})/chr(oct($1))/eg;
 267         }
 268         return $str;
 269 }
 270
 271 ## ----------------------------------------------------------------------
 272 ## HTML aware string manipulation
 273
 274 sub chop_str {
 275         my $str = shift;
 276         my $len = shift;
 277         my $add_len = shift || 10;
 278
 279         # allow only $len chars, but don't cut a word if it would fit in $add_len
 280         # if it doesn't fit, cut it if it's still longer than the dots we would add
 281         $str =~ m/^(.{0,$len}[^ \/\-_:\.@]{0,$add_len})(.*)/;
 282         my $body = $1;
 283         my $tail = $2;
 284         if (length($tail) > 4) {
 285                 $tail = " ...";
 286                 $body =~ s/&[^;]*$//; # remove chopped character entities
 287         }
 288         return "$body$tail";
 289 }
 290
 291 ## ----------------------------------------------------------------------
 292 ## functions returning short strings
 293
 294 # CSS class for given age value (in seconds)
 295 sub age_class {
 296         my $age = shift;
 297
 298         if ($age < 60*60*2) {
 299                 return "age0";
 300         } elsif ($age < 60*60*24*2) {
 301                 return "age1";
 302         } else {
 303                 return "age2";
 304         }
 305 }
 306
 307 # convert age in seconds to "nn units ago" string
 308 sub age_string {
 309         my $age = shift;
 310         my $age_str;
 311
 312         if ($age > 60*60*24*365*2) {
 313                 $age_str = (int $age/60/60/24/365);
 314                 $age_str .= " years ago";
 315         } elsif ($age > 60*60*24*(365/12)*2) {
 316                 $age_str = int $age/60/60/24/(365/12);
 317                 $age_str .= " months ago";
 318         } elsif ($age > 60*60*24*7*2) {
 319                 $age_str = int $age/60/60/24/7;
 320                 $age_str .= " weeks ago";
 321         } elsif ($age > 60*60*24*2) {
 322                 $age_str = int $age/60/60/24;
 323                 $age_str .= " days ago";
 324         } elsif ($age > 60*60*2) {
 325                 $age_str = int $age/60/60;
 326                 $age_str .= " hours ago";
 327         } elsif ($age > 60*2) {
 328                 $age_str = int $age/60;
 329                 $age_str .= " min ago";
 330         } elsif ($age > 2) {
 331                 $age_str = int $age;
 332                 $age_str .= " sec ago";
 333         } else {
 334                 $age_str .= " right now";
 335         }
 336         return $age_str;
 337 }
 338
 339 # convert file mode in octal to symbolic file mode string
 340 sub mode_str {
 341         my $mode = oct shift;
 342
 343         if (S_ISDIR($mode & S_IFMT)) {
 344                 return 'drwxr-xr-x';
 345         } elsif (S_ISLNK($mode)) {
 346                 return 'lrwxrwxrwx';
 347         } elsif (S_ISREG($mode)) {
 348                 # git cares only about the executable bit
 349                 if ($mode & S_IXUSR) {
 350                         return '-rwxr-xr-x';
 351                 } else {
 352                         return '-rw-r--r--';
 353                 };
 354         } else {
 355                 return '----------';
 356         }
 357 }
 358
 359 # convert file mode in octal to file type string
 360 sub file_type {
 361         my $mode = oct shift;
 362
 363         if (S_ISDIR($mode & S_IFMT)) {
 364                 return "directory";
 365         } elsif (S_ISLNK($mode)) {
 366                 return "symlink";
 367         } elsif (S_ISREG($mode)) {
 368                 return "file";
 369         } else {
 370                 return "unknown";
 371         }
 372 }
 373
 374 ## ----------------------------------------------------------------------
 375 ## functions returning short HTML fragments, or transforming HTML fragments
 376 ## which don't beling to other sections
 377
 378 # format line of commit message or tag comment
 379 sub format_log_line_html {
 380         my $line = shift;
 381
 382         $line = esc_html($line);
 383         $line =~ s/ /&nbsp;/g;
 384         if ($line =~ m/([0-9a-fA-F]{40})/) {
 385                 my $hash_text = $1;
 386                 if (git_get_type($hash_text) eq "commit") {
 387                         my $link = $cgi->a({-class => "text", -href => "$my_uri?" . esc_param("p=$project;a=commit;h=$hash_text")}, $hash_text);
 388                         $line =~ s/$hash_text/$link/;
 389                 }
 390         }
 391         return $line;
 392 }
 393
 394 # format marker of refs pointing to given object
 395 sub git_get_referencing {
 396         my ($refs, $id) = @_;
 397
 398         if (defined $refs->{$id}) {
 399                 return ' <span class="tag">' . esc_html($refs->{$id}) . '</span>';
 400         } else {
 401                 return "";
 402         }
 403 }
 404
 405 ## ----------------------------------------------------------------------
 406 ## git utility subroutines, invoking git commands
 407
 408 # get HEAD ref of given project as hash
 409 sub git_read_head {
 410         my $project = shift;
 411         my $oENV = $ENV{'GIT_DIR'};
 412         my $retval = undef;
 413         $ENV{'GIT_DIR'} = "$projectroot/$project";
 414         if (open my $fd, "-|", $GIT, "rev-parse", "--verify", "HEAD") {
 415                 my $head = <$fd>;
 416                 close $fd;
 417                 if (defined $head && $head =~ /^([0-9a-fA-F]{40})$/) {
 418                         $retval = $1;
 419                 }
 420         }
 421         if (defined $oENV) {
 422                 $ENV{'GIT_DIR'} = $oENV;
 423         }
 424         return $retval;
 425 }
 426
 427 # get type of given object
 428 sub git_get_type {
 429         my $hash = shift;
 430
 431         open my $fd, "-|", $GIT, "cat-file", '-t', $hash or return;
 432         my $type = <$fd>;
 433         close $fd or return;
 434         chomp $type;
 435         return $type;
 436 }
 437
 438 sub git_get_project_config {
 439         my $key = shift;
 440
 441         return unless ($key);
 442         $key =~ s/^gitweb\.//;
 443         return if ($key =~ m/\W/);
 444
 445         my $val = qx($GIT repo-config --get gitweb.$key);
 446         return ($val);
 447 }
 448
 449 sub git_get_project_config_bool {
 450         my $val = git_get_project_config (@_);
 451         if ($val and $val =~ m/true|yes|on/) {
 452                 return (1);
 453         }
 454         return; # implicit false
 455 }
 456
 457 # get hash of given path at given ref
 458 sub git_get_hash_by_path {
 459         my $base = shift;
 460         my $path = shift || return undef;
 461
 462         my $tree = $base;
 463
 464         open my $fd, "-|", $GIT, "ls-tree", $base, "--", $path
 465                 or die_error(undef, "Open git-ls-tree failed.");
 466         my $line = <$fd>;
 467         close $fd or return undef;
 468
 469         #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
 470         $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t(.+)$/;
 471         return $3;
 472 }
 473
 474 ## ......................................................................
 475 ## git utility functions, directly accessing git repository
 476
 477 # assumes that PATH is not symref
 478 sub git_read_hash {
 479         my $path = shift;
 480
 481         open my $fd, "$projectroot/$path" or return undef;
 482         my $head = <$fd>;
 483         close $fd;
 484         chomp $head;
 485         if ($head =~ m/^[0-9a-fA-F]{40}$/) {
 486                 return $head;
 487         }
 488 }
 489
 490 sub git_read_description {
 491         my $path = shift;
 492
 493         open my $fd, "$projectroot/$path/description" or return undef;
 494         my $descr = <$fd>;
 495         close $fd;
 496         chomp $descr;
 497         return $descr;
 498 }
 499
 500 sub git_read_projects {
 501         my @list;
 502
 503         if (-d $projects_list) {
 504                 # search in directory
 505                 my $dir = $projects_list;
 506                 opendir my ($dh), $dir or return undef;
 507                 while (my $dir = readdir($dh)) {
 508                         if (-e "$projectroot/$dir/HEAD") {
 509                                 my $pr = {
 510                                         path => $dir,
 511                                 };
 512                                 push @list, $pr
 513                         }
 514                 }
 515                 closedir($dh);
 516         } elsif (-f $projects_list) {
 517                 # read from file(url-encoded):
 518                 # 'git%2Fgit.git Linus+Torvalds'
 519                 # 'libs%2Fklibc%2Fklibc.git H.+Peter+Anvin'
 520                 # 'linux%2Fhotplug%2Fudev.git Greg+Kroah-Hartman'
 521                 open my ($fd), $projects_list or return undef;
 522                 while (my $line = <$fd>) {
 523                         chomp $line;
 524                         my ($path, $owner) = split ' ', $line;
 525                         $path = unescape($path);
 526                         $owner = unescape($owner);
 527                         if (!defined $path) {
 528                                 next;
 529                         }
 530                         if (-e "$projectroot/$path/HEAD") {
 531                                 my $pr = {
 532                                         path => $path,
 533                                         owner => decode("utf8", $owner, Encode::FB_DEFAULT),
 534                                 };
 535                                 push @list, $pr
 536                         }
 537                 }
 538                 close $fd;
 539         }
 540         @list = sort {$a->{'path'} cmp $b->{'path'}} @list;
 541         return @list;
 542 }
 543
 544 sub read_info_ref {
 545         my $type = shift || "";
 546         my %refs;
 547         # 5dc01c595e6c6ec9ccda4f6f69c131c0dd945f8c      refs/tags/v2.6.11
 548         # c39ae07f393806ccf406ef966e9a15afc43cc36a      refs/tags/v2.6.11^{}
 549         open my $fd, "$projectroot/$project/info/refs" or return;
 550         while (my $line = <$fd>) {
 551                 chomp $line;
 552                 # attention: for $type == "" it saves only last path part of ref name
 553                 # e.g. from 'refs/heads/jn/gitweb' it would leave only 'gitweb'
 554                 if ($line =~ m/^([0-9a-fA-F]{40})\t.*$type\/([^\^]+)/) {
 555                         if (defined $refs{$1}) {
 556                                 $refs{$1} .= " / $2";
 557                         } else {
 558                                 $refs{$1} = $2;
 559                         }
 560                 }
 561         }
 562         close $fd or return;
 563         return \%refs;
 564 }
 565
 566 ## ----------------------------------------------------------------------
 567 ## parse to hash functions
 568
 569 sub date_str {
 570         my $epoch = shift;
 571         my $tz = shift || "-0000";
 572
 573         my %date;
 574         my @months = ("Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec");
 575         my @days = ("Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat");
 576         my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($epoch);
 577         $date{'hour'} = $hour;
 578         $date{'minute'} = $min;
 579         $date{'mday'} = $mday;
 580         $date{'day'} = $days[$wday];
 581         $date{'month'} = $months[$mon];
 582         $date{'rfc2822'} = sprintf "%s, %d %s %4d %02d:%02d:%02d +0000", $days[$wday], $mday, $months[$mon], 1900+$year, $hour ,$min, $sec;
 583         $date{'mday-time'} = sprintf "%d %s %02d:%02d", $mday, $months[$mon], $hour ,$min;
 584
 585         $tz =~ m/^([+\-][0-9][0-9])([0-9][0-9])$/;
 586         my $local = $epoch + ((int $1 + ($2/60)) * 3600);
 587         ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($local);
 588         $date{'hour_local'} = $hour;
 589         $date{'minute_local'} = $min;
 590         $date{'tz_local'} = $tz;
 591         return %date;
 592 }
 593
 594 sub git_read_tag {
 595         my $tag_id = shift;
 596         my %tag;
 597         my @comment;
 598
 599         open my $fd, "-|", $GIT, "cat-file", "tag", $tag_id or return;
 600         $tag{'id'} = $tag_id;
 601         while (my $line = <$fd>) {
 602                 chomp $line;
 603                 if ($line =~ m/^object ([0-9a-fA-F]{40})$/) {
 604                         $tag{'object'} = $1;
 605                 } elsif ($line =~ m/^type (.+)$/) {
 606                         $tag{'type'} = $1;
 607                 } elsif ($line =~ m/^tag (.+)$/) {
 608                         $tag{'name'} = $1;
 609                 } elsif ($line =~ m/^tagger (.*) ([0-9]+) (.*)$/) {
 610                         $tag{'author'} = $1;
 611                         $tag{'epoch'} = $2;
 612                         $tag{'tz'} = $3;
 613                 } elsif ($line =~ m/--BEGIN/) {
 614                         push @comment, $line;
 615                         last;
 616                 } elsif ($line eq "") {
 617                         last;
 618                 }
 619         }
 620         push @comment, <$fd>;
 621         $tag{'comment'} = \@comment;
 622         close $fd or return;
 623         if (!defined $tag{'name'}) {
 624                 return
 625         };
 626         return %tag
 627 }
 628
 629 sub git_read_commit {
 630         my $commit_id = shift;
 631         my $commit_text = shift;
 632
 633         my @commit_lines;
 634         my %co;
 635
 636         if (defined $commit_text) {
 637                 @commit_lines = @$commit_text;
 638         } else {
 639                 $/ = "\0";
 640                 open my $fd, "-|", $GIT, "rev-list", "--header", "--parents", "--max-count=1", $commit_id or return;
 641                 @commit_lines = split '\n', <$fd>;
 642                 close $fd or return;
 643                 $/ = "\n";
 644                 pop @commit_lines;
 645         }
 646         my $header = shift @commit_lines;
 647         if (!($header =~ m/^[0-9a-fA-F]{40}/)) {
 648                 return;
 649         }
 650         ($co{'id'}, my @parents) = split ' ', $header;
 651         $co{'parents'} = \@parents;
 652         $co{'parent'} = $parents[0];
 653         while (my $line = shift @commit_lines) {
 654                 last if $line eq "\n";
 655                 if ($line =~ m/^tree ([0-9a-fA-F]{40})$/) {
 656                         $co{'tree'} = $1;
 657                 } elsif ($line =~ m/^author (.*) ([0-9]+) (.*)$/) {
 658                         $co{'author'} = $1;
 659                         $co{'author_epoch'} = $2;
 660                         $co{'author_tz'} = $3;
 661                         if ($co{'author'} =~ m/^([^<]+) </) {
 662                                 $co{'author_name'} = $1;
 663                         } else {
 664                                 $co{'author_name'} = $co{'author'};
 665                         }
 666                 } elsif ($line =~ m/^committer (.*) ([0-9]+) (.*)$/) {
 667                         $co{'committer'} = $1;
 668                         $co{'committer_epoch'} = $2;
 669                         $co{'committer_tz'} = $3;
 670                         $co{'committer_name'} = $co{'committer'};
 671                         $co{'committer_name'} =~ s/ <.*//;
 672                 }
 673         }
 674         if (!defined $co{'tree'}) {
 675                 return;
 676         };
 677
 678         foreach my $title (@commit_lines) {
 679                 $title =~ s/^    //;
 680                 if ($title ne "") {
 681                         $co{'title'} = chop_str($title, 80, 5);
 682                         # remove leading stuff of merges to make the interesting part visible
 683                         if (length($title) > 50) {
 684                                 $title =~ s/^Automatic //;
 685                                 $title =~ s/^merge (of|with) /Merge ... /i;
 686                                 if (length($title) > 50) {
 687                                         $title =~ s/(http|rsync):\/\///;
 688                                 }
 689                                 if (length($title) > 50) {
 690                                         $title =~ s/(master|www|rsync)\.//;
 691                                 }
 692                                 if (length($title) > 50) {
 693                                         $title =~ s/kernel.org:?//;
 694                                 }
 695                                 if (length($title) > 50) {
 696                                         $title =~ s/\/pub\/scm//;
 697                                 }
 698                         }
 699                         $co{'title_short'} = chop_str($title, 50, 5);
 700                         last;
 701                 }
 702         }
 703         # remove added spaces
 704         foreach my $line (@commit_lines) {
 705                 $line =~ s/^    //;
 706         }
 707         $co{'comment'} = \@commit_lines;
 708
 709         my $age = time - $co{'committer_epoch'};
 710         $co{'age'} = $age;
 711         $co{'age_string'} = age_string($age);
 712         my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($co{'committer_epoch'});
 713         if ($age > 60*60*24*7*2) {
 714                 $co{'age_string_date'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
 715                 $co{'age_string_age'} = $co{'age_string'};
 716         } else {
 717                 $co{'age_string_date'} = $co{'age_string'};
 718                 $co{'age_string_age'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
 719         }
 720         return %co;
 721 }
 722
 723 ## ......................................................................
 724 ## parse to array of hashes functions
 725
 726 sub git_read_refs {
 727         my $ref_dir = shift;
 728         my @reflist;
 729
 730         my @refs;
 731         opendir my $dh, "$projectroot/$project/$ref_dir";
 732         while (my $dir = readdir($dh)) {
 733                 if ($dir =~ m/^\./) {
 734                         next;
 735                 }
 736                 if (-d "$projectroot/$project/$ref_dir/$dir") {
 737                         opendir my $dh2, "$projectroot/$project/$ref_dir/$dir";
 738                         my @subdirs = grep !m/^\./, readdir $dh2;
 739                         closedir($dh2);
 740                         foreach my $subdir (@subdirs) {
 741                                 push @refs, "$dir/$subdir"
 742                         }
 743                         next;
 744                 }
 745                 push @refs, $dir;
 746         }
 747         closedir($dh);
 748         foreach my $ref_file (@refs) {
 749                 my $ref_id = git_read_hash("$project/$ref_dir/$ref_file");
 750                 my $type = git_get_type($ref_id) || next;
 751                 my %ref_item;
 752                 my %co;
 753                 $ref_item{'type'} = $type;
 754                 $ref_item{'id'} = $ref_id;
 755                 $ref_item{'epoch'} = 0;
 756                 $ref_item{'age'} = "unknown";
 757                 if ($type eq "tag") {
 758                         my %tag = git_read_tag($ref_id);
 759                         $ref_item{'comment'} = $tag{'comment'};
 760                         if ($tag{'type'} eq "commit") {
 761                                 %co = git_read_commit($tag{'object'});
 762                                 $ref_item{'epoch'} = $co{'committer_epoch'};
 763                                 $ref_item{'age'} = $co{'age_string'};
 764                         } elsif (defined($tag{'epoch'})) {
 765                                 my $age = time - $tag{'epoch'};
 766                                 $ref_item{'epoch'} = $tag{'epoch'};
 767                                 $ref_item{'age'} = age_string($age);
 768                         }
 769                         $ref_item{'reftype'} = $tag{'type'};
 770                         $ref_item{'name'} = $tag{'name'};
 771                         $ref_item{'refid'} = $tag{'object'};
 772                 } elsif ($type eq "commit"){
 773                         %co = git_read_commit($ref_id);
 774                         $ref_item{'reftype'} = "commit";
 775                         $ref_item{'name'} = $ref_file;
 776                         $ref_item{'title'} = $co{'title'};
 777                         $ref_item{'refid'} = $ref_id;
 778                         $ref_item{'epoch'} = $co{'committer_epoch'};
 779                         $ref_item{'age'} = $co{'age_string'};
 780                 } else {
 781                         $ref_item{'reftype'} = $type;
 782                         $ref_item{'name'} = $ref_file;
 783                         $ref_item{'refid'} = $ref_id;
 784                 }
 785
 786                 push @reflist, \%ref_item;
 787         }
 788         # sort tags by age
 789         @reflist = sort {$b->{'epoch'} <=> $a->{'epoch'}} @reflist;
 790         return \@reflist;
 791 }
 792
 793 ## ----------------------------------------------------------------------
 794 ## filesystem-related functions
 795
 796 sub get_file_owner {
 797         my $path = shift;
 798
 799         my ($dev, $ino, $mode, $nlink, $st_uid, $st_gid, $rdev, $size) = stat($path);
 800         my ($name, $passwd, $uid, $gid, $quota, $comment, $gcos, $dir, $shell) = getpwuid($st_uid);
 801         if (!defined $gcos) {
 802                 return undef;
 803         }
 804         my $owner = $gcos;
 805         $owner =~ s/[,;].*$//;
 806         return decode("utf8", $owner, Encode::FB_DEFAULT);
 807 }
 808
 809 ## ......................................................................
 810 ## mimetype related functions
 811
 812 sub mimetype_guess_file {
 813         my $filename = shift;
 814         my $mimemap = shift;
 815         -r $mimemap or return undef;
 816
 817         my %mimemap;
 818         open(MIME, $mimemap) or return undef;
 819         while (<MIME>) {
 820                 my ($mime, $exts) = split(/\t+/);
 821                 my @exts = split(/\s+/, $exts);
 822                 foreach my $ext (@exts) {
 823                         $mimemap{$ext} = $mime;
 824                 }
 825         }
 826         close(MIME);
 827
 828         $filename =~ /\.(.*?)$/;
 829         return $mimemap{$1};
 830 }
 831
 832 sub mimetype_guess {
 833         my $filename = shift;
 834         my $mime;
 835         $filename =~ /\./ or return undef;
 836
 837         if ($mimetypes_file) {
 838                 my $file = $mimetypes_file;
 839                 #$file =~ m#^/# or $file = "$projectroot/$path/$file";
 840                 $mime = mimetype_guess_file($filename, $file);
 841         }
 842         $mime ||= mimetype_guess_file($filename, '/etc/mime.types');
 843         return $mime;
 844 }
 845
 846 sub git_blob_plain_mimetype {
 847         my $fd = shift;
 848         my $filename = shift;
 849
 850         if ($filename) {
 851                 my $mime = mimetype_guess($filename);
 852                 $mime and return $mime;
 853         }
 854
 855         # just in case
 856         return $default_blob_plain_mimetype unless $fd;
 857
 858         if (-T $fd) {
 859                 return 'text/plain' .
 860                        ($default_text_plain_charset ? '; charset='.$default_text_plain_charset : '');
 861         } elsif (! $filename) {
 862                 return 'application/octet-stream';
 863         } elsif ($filename =~ m/\.png$/i) {
 864                 return 'image/png';
 865         } elsif ($filename =~ m/\.gif$/i) {
 866                 return 'image/gif';
 867         } elsif ($filename =~ m/\.jpe?g$/i) {
 868                 return 'image/jpeg';
 869         } else {
 870                 return 'application/octet-stream';
 871         }
 872 }
 873
 874 ## ======================================================================
 875 ## functions printing HTML: header, footer, error page
 876
 877 sub git_header_html {
 878         my $status = shift || "200 OK";
 879         my $expires = shift;
 880
 881         my $title = "$site_name git";
 882         if (defined $project) {
 883                 $title .= " - $project";
 884                 if (defined $action) {
 885                         $title .= "/$action";
 886                         if (defined $file_name) {
 887                                 $title .= " - $file_name";
 888                                 if ($action eq "tree" && $file_name !~ m|/$|) {
 889                                         $title .= "/";
 890                                 }
 891                         }
 892                 }
 893         }
 894         my $content_type;
 895         # require explicit support from the UA if we are to send the page as
 896         # 'application/xhtml+xml', otherwise send it as plain old 'text/html'.
 897         # we have to do this because MSIE sometimes globs '*/*', pretending to
 898         # support xhtml+xml but choking when it gets what it asked for.
 899         if ($cgi->http('HTTP_ACCEPT') =~ m/(,|;|\s|^)application\/xhtml\+xml(,|;|\s|$)/ && $cgi->Accept('application/xhtml+xml') != 0) {
 900                 $content_type = 'application/xhtml+xml';
 901         } else {
 902                 $content_type = 'text/html';
 903         }
 904         print $cgi->header(-type=>$content_type, -charset => 'utf-8', -status=> $status, -expires => $expires);
 905         print <<EOF;
 906 <?xml version="1.0" encoding="utf-8"?>
 907 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
 908 <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en-US" lang="en-US">
 909 <!-- git web interface v$version, (C) 2005-2006, Kay Sievers <kay.sievers\@vrfy.org>, Christian Gierke -->
 910 <!-- git core binaries version $git_version -->
 911 <head>
 912 <meta http-equiv="content-type" content="$content_type; charset=utf-8"/>
 913 <meta name="robots" content="index, nofollow"/>
 914 <title>$title</title>
 915 <link rel="stylesheet" type="text/css" href="$stylesheet"/>
 916 $rss_link
 917 </head>
 918 <body>
 919 EOF
 920         print "<div class=\"page_header\">\n" .
 921               "<a href=\"http://www.kernel.org/pub/software/scm/git/docs/\" title=\"git documentation\">" .
 922               "<img src=\"$my_uri?" . esc_param("a=git-logo.png") . "\" width=\"72\" height=\"27\" alt=\"git\" style=\"float:right; border-width:0px;\"/>" .
 923               "</a>\n";
 924         print $cgi->a({-href => esc_param($home_link)}, "projects") . " / ";
 925         if (defined $project) {
 926                 print $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=summary")}, esc_html($project));
 927                 if (defined $action) {
 928                         print " / $action";
 929                 }
 930                 print "\n";
 931                 if (!defined $searchtext) {
 932                         $searchtext = "";
 933                 }
 934                 my $search_hash;
 935                 if (defined $hash_base) {
 936                         $search_hash = $hash_base;
 937                 } elsif (defined $hash) {
 938                         $search_hash = $hash;
 939                 } else {
 940                         $search_hash = "HEAD";
 941                 }
 942                 $cgi->param("a", "search");
 943                 $cgi->param("h", $search_hash);
 944                 print $cgi->startform(-method => "get", -action => $my_uri) .
 945                       "<div class=\"search\">\n" .
 946                       $cgi->hidden(-name => "p") . "\n" .
 947                       $cgi->hidden(-name => "a") . "\n" .
 948                       $cgi->hidden(-name => "h") . "\n" .
 949                       $cgi->textfield(-name => "s", -value => $searchtext) . "\n" .
 950                       "</div>" .
 951                       $cgi->end_form() . "\n";
 952         }
 953         print "</div>\n";
 954 }
 955
 956 sub git_footer_html {
 957         print "<div class=\"page_footer\">\n";
 958         if (defined $project) {
 959                 my $descr = git_read_description($project);
 960                 if (defined $descr) {
 961                         print "<div class=\"page_footer_text\">" . esc_html($descr) . "</div>\n";
 962                 }
 963                 print $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=rss"), -class => "rss_logo"}, "RSS") . "\n";
 964         } else {
 965                 print $cgi->a({-href => "$my_uri?" . esc_param("a=opml"), -class => "rss_logo"}, "OPML") . "\n";
 966         }
 967         print "</div>\n" .
 968               "</body>\n" .
 969               "</html>";
 970 }
 971
 972 sub die_error {
 973         my $status = shift || "403 Forbidden";
 974         my $error = shift || "Malformed query, file missing or permission denied";
 975
 976         git_header_html($status);
 977         print "<div class=\"page_body\">\n" .
 978               "<br/><br/>\n" .
 979               "$status - $error\n" .
 980               "<br/>\n" .
 981               "</div>\n";
 982         git_footer_html();
 983         exit;
 984 }
 985
 986 ## ----------------------------------------------------------------------
 987 ## functions printing or outputting HTML: navigation
 988
 989 sub git_page_nav {
 990         my ($current, $suppress, $head, $treehead, $treebase, $extra) = @_;
 991         $extra = '' if !defined $extra; # pager or formats
 992
 993         my @navs = qw(summary shortlog log commit commitdiff tree);
 994         if ($suppress) {
 995                 @navs = grep { $_ ne $suppress } @navs;
 996         }
 997
 998         my %arg = map { $_, ''} @navs;
 999         if (defined $head) {
1000                 for (qw(commit commitdiff)) {
1001                         $arg{$_} = ";h=$head";
1002                 }
1003                 if ($current =~ m/^(tree | log | shortlog | commit | commitdiff | search)$/x) {
1004                         for (qw(shortlog log)) {
1005                                 $arg{$_} = ";h=$head";
1006                         }
1007                 }
1008         }
1009         $arg{tree} .= ";h=$treehead" if defined $treehead;
1010         $arg{tree} .= ";hb=$treebase" if defined $treebase;
1011
1012         print "<div class=\"page_nav\">\n" .
1013                 (join " | ",
1014                  map { $_ eq $current
1015                                          ? $_
1016                                          : $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=$_$arg{$_}")}, "$_")
1017                                  }
1018                  @navs);
1019         print "<br/>\n$extra<br/>\n" .
1020               "</div>\n";
1021 }
1022
1023 sub git_get_paging_nav {
1024         my ($action, $hash, $head, $page, $nrevs) = @_;
1025         my $paging_nav;
1026
1027
1028         if ($hash ne $head || $page) {
1029                 $paging_nav .= $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=$action")}, "HEAD");
1030         } else {
1031                 $paging_nav .= "HEAD";
1032         }
1033
1034         if ($page > 0) {
1035                 $paging_nav .= " &sdot; " .
1036                         $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=$action;h=$hash;pg=" . ($page-1)),
1037                                                          -accesskey => "p", -title => "Alt-p"}, "prev");
1038         } else {
1039                 $paging_nav .= " &sdot; prev";
1040         }
1041
1042         if ($nrevs >= (100 * ($page+1)-1)) {
1043                 $paging_nav .= " &sdot; " .
1044                         $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=$action;h=$hash;pg=" . ($page+1)),
1045                                                          -accesskey => "n", -title => "Alt-n"}, "next");
1046         } else {
1047                 $paging_nav .= " &sdot; next";
1048         }
1049
1050         return $paging_nav;
1051 }
1052
1053 ## ......................................................................
1054 ## functions printing or outputting HTML: div
1055
1056 sub git_header_div {
1057         my ($action, $title, $hash, $hash_base) = @_;
1058         my $rest = '';
1059
1060         $rest .= ";h=$hash" if $hash;
1061         $rest .= ";hb=$hash_base" if $hash_base;
1062
1063         print "<div class=\"header\">\n" .
1064               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=$action$rest"),
1065                        -class => "title"}, $title ? $title : $action) . "\n" .
1066               "</div>\n";
1067 }
1068
1069 sub git_print_page_path {
1070         my $name = shift;
1071         my $type = shift;
1072
1073         if (!defined $name) {
1074                 print "<div class=\"page_path\"><b>/</b></div>\n";
1075         } elsif ($type =~ "blob") {
1076                 print "<div class=\"page_path\"><b>" .
1077                         $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob_plain;f=$file_name")}, esc_html($name)) . "</b><br/></div>\n";
1078         } else {
1079                 print "<div class=\"page_path\"><b>" . esc_html($name) . "</b><br/></div>\n";
1080         }
1081 }
1082
1083 ## ......................................................................
1084 ## functions printing large fragments of HTML
1085
1086 sub git_shortlog_body {
1087         # uses global variable $project
1088         my ($revlist, $from, $to, $refs, $extra) = @_;
1089         $from = 0 unless defined $from;
1090         $to = $#{$revlist} if (!defined $to || $#{$revlist} < $to);
1091
1092         print "<table class=\"shortlog\" cellspacing=\"0\">\n";
1093         my $alternate = 0;
1094         for (my $i = $from; $i <= $to; $i++) {
1095                 my $commit = $revlist->[$i];
1096                 #my $ref = defined $refs ? git_get_referencing($refs, $commit) : '';
1097                 my $ref = git_get_referencing($refs, $commit);
1098                 my %co = git_read_commit($commit);
1099                 my %ad = date_str($co{'author_epoch'});
1100                 if ($alternate) {
1101                         print "<tr class=\"dark\">\n";
1102                 } else {
1103                         print "<tr class=\"light\">\n";
1104                 }
1105                 $alternate ^= 1;
1106                 # git_summary() used print "<td><i>$co{'age_string'}</i></td>\n" .
1107                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
1108                       "<td><i>" . esc_html(chop_str($co{'author_name'}, 10)) . "</i></td>\n" .
1109                       "<td>";
1110                 if (length($co{'title_short'}) < length($co{'title'})) {
1111                         print $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commit;h=$commit"),
1112                                        -class => "list", -title => "$co{'title'}"},
1113                               "<b>" . esc_html($co{'title_short'}) . "$ref</b>");
1114                 } else {
1115                         print $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commit;h=$commit"),
1116                                        -class => "list"},
1117                               "<b>" . esc_html($co{'title'}) . "$ref</b>");
1118                 }
1119                 print "</td>\n" .
1120                       "<td class=\"link\">" .
1121                       $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commit;h=$commit")}, "commit") . " | " .
1122                       $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commitdiff;h=$commit")}, "commitdiff") .
1123                       "</td>\n" .
1124                       "</tr>\n";
1125         }
1126         if (defined $extra) {
1127                 print "<tr>\n" .
1128                       "<td colspan=\"4\">$extra</td>\n" .
1129                       "</tr>\n";
1130         }
1131         print "</table>\n";
1132 }
1133
1134 sub git_tags_body {
1135         # uses global variable $project
1136         my ($taglist, $from, $to, $extra) = @_;
1137         $from = 0 unless defined $from;
1138         $to = $#{$taglist} if (!defined $to || $#{$taglist} < $to);
1139
1140         print "<table class=\"tags\" cellspacing=\"0\">\n";
1141         my $alternate = 0;
1142         for (my $i = $from; $i <= $to; $i++) {
1143                 my $entry = $taglist->[$i];
1144                 my %tag = %$entry;
1145                 my $comment_lines = $tag{'comment'};
1146                 my $comment = shift @$comment_lines;
1147                 my $comment_short;
1148                 if (defined $comment) {
1149                         $comment_short = chop_str($comment, 30, 5);
1150                 }
1151                 if ($alternate) {
1152                         print "<tr class=\"dark\">\n";
1153                 } else {
1154                         print "<tr class=\"light\">\n";
1155                 }
1156                 $alternate ^= 1;
1157                 print "<td><i>$tag{'age'}</i></td>\n" .
1158                       "<td>" .
1159                       $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=$tag{'reftype'};h=$tag{'refid'}"),
1160                                -class => "list"}, "<b>" . esc_html($tag{'name'}) . "</b>") .
1161                       "</td>\n" .
1162                       "<td>";
1163                 if (defined $comment) {
1164                         if (length($comment_short) < length($comment)) {
1165                                 print $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=tag;h=$tag{'id'}"),
1166                                                -class => "list", -title => $comment}, $comment_short);
1167                         } else {
1168                                 print $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=tag;h=$tag{'id'}"),
1169                                                -class => "list"}, $comment);
1170                         }
1171                 }
1172                 print "</td>\n" .
1173                       "<td class=\"selflink\">";
1174                 if ($tag{'type'} eq "tag") {
1175                         print $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=tag;h=$tag{'id'}")}, "tag");
1176                 } else {
1177                         print "&nbsp;";
1178                 }
1179                 print "</td>\n" .
1180                       "<td class=\"link\">" . " | " .
1181                       $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=$tag{'reftype'};h=$tag{'refid'}")}, $tag{'reftype'});
1182                 if ($tag{'reftype'} eq "commit") {
1183                         print " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=shortlog;h=$tag{'name'}")}, "shortlog") .
1184                               " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=log;h=$tag{'refid'}")}, "log");
1185                 } elsif ($tag{'reftype'} eq "blob") {
1186                         print " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob_plain;h=$tag{'refid'}")}, "raw");
1187                 }
1188                 print "</td>\n" .
1189                       "</tr>";
1190         }
1191         if (defined $extra) {
1192                 print "<tr>\n" .
1193                       "<td colspan=\"5\">$extra</td>\n" .
1194                       "</tr>\n";
1195         }
1196         print "</table>\n";
1197 }
1198
1199 sub git_heads_body {
1200         # uses global variable $project
1201         my ($taglist, $head, $from, $to, $extra) = @_;
1202         $from = 0 unless defined $from;
1203         $to = $#{$taglist} if (!defined $to || $#{$taglist} < $to);
1204
1205         print "<table class=\"heads\" cellspacing=\"0\">\n";
1206         my $alternate = 0;
1207         for (my $i = $from; $i <= $to; $i++) {
1208                 my $entry = $taglist->[$i];
1209                 my %tag = %$entry;
1210                 my $curr = $tag{'id'} eq $head;
1211                 if ($alternate) {
1212                         print "<tr class=\"dark\">\n";
1213                 } else {
1214                         print "<tr class=\"light\">\n";
1215                 }
1216                 $alternate ^= 1;
1217                 print "<td><i>$tag{'age'}</i></td>\n" .
1218                       ($tag{'id'} eq $head ? "<td class=\"current_head\">" : "<td>") .
1219                       $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=shortlog;h=$tag{'name'}"),
1220                                -class => "list"}, "<b>" . esc_html($tag{'name'}) . "</b>") .
1221                       "</td>\n" .
1222                       "<td class=\"link\">" .
1223                       $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=shortlog;h=$tag{'name'}")}, "shortlog") . " | " .
1224                       $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=log;h=$tag{'name'}")}, "log") .
1225                       "</td>\n" .
1226                       "</tr>";
1227         }
1228         if (defined $extra) {
1229                 print "<tr>\n" .
1230                       "<td colspan=\"3\">$extra</td>\n" .
1231                       "</tr>\n";
1232         }
1233         print "</table>\n";
1234 }
1235
1236 ## ----------------------------------------------------------------------
1237 ## functions printing large fragments, format as one of arguments
1238
1239 sub git_diff_print {
1240         my $from = shift;
1241         my $from_name = shift;
1242         my $to = shift;
1243         my $to_name = shift;
1244         my $format = shift || "html";
1245
1246         my $from_tmp = "/dev/null";
1247         my $to_tmp = "/dev/null";
1248         my $pid = $$;
1249
1250         # create tmp from-file
1251         if (defined $from) {
1252                 $from_tmp = "$git_temp/gitweb_" . $$ . "_from";
1253                 open my $fd2, "> $from_tmp";
1254                 open my $fd, "-|", $GIT, "cat-file", "blob", $from;
1255                 my @file = <$fd>;
1256                 print $fd2 @file;
1257                 close $fd2;
1258                 close $fd;
1259         }
1260
1261         # create tmp to-file
1262         if (defined $to) {
1263                 $to_tmp = "$git_temp/gitweb_" . $$ . "_to";
1264                 open my $fd2, "> $to_tmp";
1265                 open my $fd, "-|", $GIT, "cat-file", "blob", $to;
1266                 my @file = <$fd>;
1267                 print $fd2 @file;
1268                 close $fd2;
1269                 close $fd;
1270         }
1271
1272         open my $fd, "-|", "/usr/bin/diff -u -p -L \'$from_name\' -L \'$to_name\' $from_tmp $to_tmp";
1273         if ($format eq "plain") {
1274                 undef $/;
1275                 print <$fd>;
1276                 $/ = "\n";
1277         } else {
1278                 while (my $line = <$fd>) {
1279                         chomp $line;
1280                         my $char = substr($line, 0, 1);
1281                         my $diff_class = "";
1282                         if ($char eq '+') {
1283                                 $diff_class = " add";
1284                         } elsif ($char eq "-") {
1285                                 $diff_class = " rem";
1286                         } elsif ($char eq "@") {
1287                                 $diff_class = " chunk_header";
1288                         } elsif ($char eq "\\") {
1289                                 # skip errors
1290                                 next;
1291                         }
1292                         while ((my $pos = index($line, "\t")) != -1) {
1293                                 if (my $count = (8 - (($pos-1) % 8))) {
1294                                         my $spaces = ' ' x $count;
1295                                         $line =~ s/\t/$spaces/;
1296                                 }
1297                         }
1298                         print "<div class=\"diff$diff_class\">" . esc_html($line) . "</div>\n";
1299                 }
1300         }
1301         close $fd;
1302
1303         if (defined $from) {
1304                 unlink($from_tmp);
1305         }
1306         if (defined $to) {
1307                 unlink($to_tmp);
1308         }
1309 }
1310
1311
1312 ## ======================================================================
1313 ## ======================================================================
1314 ## actions
1315
1316 # git-logo (cached in browser for one day)
1317 sub git_logo {
1318         binmode STDOUT, ':raw';
1319         print $cgi->header(-type => 'image/png', -expires => '+1d');
1320         # cat git-logo.png | hexdump -e '16/1 " %02x"  "\n"' | sed 's/ /\\x/g'
1321         print   "\x89\x50\x4e\x47\x0d\x0a\x1a\x0a\x00\x00\x00\x0d\x49\x48\x44\x52" .
1322                 "\x00\x00\x00\x48\x00\x00\x00\x1b\x04\x03\x00\x00\x00\x2d\xd9\xd4" .
1323                 "\x2d\x00\x00\x00\x18\x50\x4c\x54\x45\xff\xff\xff\x60\x60\x5d\xb0" .
1324                 "\xaf\xaa\x00\x80\x00\xce\xcd\xc7\xc0\x00\x00\xe8\xe8\xe6\xf7\xf7" .
1325                 "\xf6\x95\x0c\xa7\x47\x00\x00\x00\x73\x49\x44\x41\x54\x28\xcf\x63" .
1326                 "\x48\x67\x20\x04\x4a\x5c\x18\x0a\x08\x2a\x62\x53\x61\x20\x02\x08" .
1327                 "\x0d\x69\x45\xac\xa1\xa1\x01\x30\x0c\x93\x60\x36\x26\x52\x91\xb1" .
1328                 "\x01\x11\xd6\xe1\x55\x64\x6c\x6c\xcc\x6c\x6c\x0c\xa2\x0c\x70\x2a" .
1329                 "\x62\x06\x2a\xc1\x62\x1d\xb3\x01\x02\x53\xa4\x08\xe8\x00\x03\x18" .
1330                 "\x26\x56\x11\xd4\xe1\x20\x97\x1b\xe0\xb4\x0e\x35\x24\x71\x29\x82" .
1331                 "\x99\x30\xb8\x93\x0a\x11\xb9\x45\x88\xc1\x8d\xa0\xa2\x44\x21\x06" .
1332                 "\x27\x41\x82\x40\x85\xc1\x45\x89\x20\x70\x01\x00\xa4\x3d\x21\xc5" .
1333                 "\x12\x1c\x9a\xfe\x00\x00\x00\x00\x49\x45\x4e\x44\xae\x42\x60\x82";
1334 }
1335
1336 sub git_project_list {
1337         my @list = git_read_projects();
1338         my @projects;
1339         if (!@list) {
1340                 die_error(undef, "No project found.");
1341         }
1342         foreach my $pr (@list) {
1343                 my $head = git_read_head($pr->{'path'});
1344                 if (!defined $head) {
1345                         next;
1346                 }
1347                 $ENV{'GIT_DIR'} = "$projectroot/$pr->{'path'}";
1348                 my %co = git_read_commit($head);
1349                 if (!%co) {
1350                         next;
1351                 }
1352                 $pr->{'commit'} = \%co;
1353                 if (!defined $pr->{'descr'}) {
1354                         my $descr = git_read_description($pr->{'path'}) || "";
1355                         $pr->{'descr'} = chop_str($descr, 25, 5);
1356                 }
1357                 if (!defined $pr->{'owner'}) {
1358                         $pr->{'owner'} = get_file_owner("$projectroot/$pr->{'path'}") || "";
1359                 }
1360                 push @projects, $pr;
1361         }
1362         git_header_html();
1363         if (-f $home_text) {
1364                 print "<div class=\"index_include\">\n";
1365                 open (my $fd, $home_text);
1366                 print <$fd>;
1367                 close $fd;
1368                 print "</div>\n";
1369         }
1370         print "<table class=\"project_list\">\n" .
1371               "<tr>\n";
1372         if (!defined($order) || (defined($order) && ($order eq "project"))) {
1373                 @projects = sort {$a->{'path'} cmp $b->{'path'}} @projects;
1374                 print "<th>Project</th>\n";
1375         } else {
1376                 print "<th>" . $cgi->a({-class => "header", -href => "$my_uri?" . esc_param("o=project")}, "Project") . "</th>\n";
1377         }
1378         if (defined($order) && ($order eq "descr")) {
1379                 @projects = sort {$a->{'descr'} cmp $b->{'descr'}} @projects;
1380                 print "<th>Description</th>\n";
1381         } else {
1382                 print "<th>" . $cgi->a({-class => "header", -href => "$my_uri?" . esc_param("o=descr")}, "Description") . "</th>\n";
1383         }
1384         if (defined($order) && ($order eq "owner")) {
1385                 @projects = sort {$a->{'owner'} cmp $b->{'owner'}} @projects;
1386                 print "<th>Owner</th>\n";
1387         } else {
1388                 print "<th>" . $cgi->a({-class => "header", -href => "$my_uri?" . esc_param("o=owner")}, "Owner") . "</th>\n";
1389         }
1390         if (defined($order) && ($order eq "age")) {
1391                 @projects = sort {$a->{'commit'}{'age'} <=> $b->{'commit'}{'age'}} @projects;
1392                 print "<th>Last Change</th>\n";
1393         } else {
1394                 print "<th>" . $cgi->a({-class => "header", -href => "$my_uri?" . esc_param("o=age")}, "Last Change") . "</th>\n";
1395         }
1396         print "<th></th>\n" .
1397               "</tr>\n";
1398         my $alternate = 0;
1399         foreach my $pr (@projects) {
1400                 if ($alternate) {
1401                         print "<tr class=\"dark\">\n";
1402                 } else {
1403                         print "<tr class=\"light\">\n";
1404                 }
1405                 $alternate ^= 1;
1406                 print "<td>" . $cgi->a({-href => "$my_uri?" . esc_param("p=$pr->{'path'};a=summary"), -class => "list"}, esc_html($pr->{'path'})) . "</td>\n" .
1407                       "<td>" . esc_html($pr->{'descr'}) . "</td>\n" .
1408                       "<td><i>" . chop_str($pr->{'owner'}, 15) . "</i></td>\n";
1409                 print "<td class=\"". age_class($pr->{'commit'}{'age'}) . "\">" . $pr->{'commit'}{'age_string'} . "</td>\n" .
1410                       "<td class=\"link\">" .
1411                       $cgi->a({-href => "$my_uri?" . esc_param("p=$pr->{'path'};a=summary")}, "summary") .
1412                       " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$pr->{'path'};a=shortlog")}, "shortlog") .
1413                       " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$pr->{'path'};a=log")}, "log") .
1414                       "</td>\n" .
1415                       "</tr>\n";
1416         }
1417         print "</table>\n";
1418         git_footer_html();
1419 }
1420
1421 sub git_summary {
1422         my $descr = git_read_description($project) || "none";
1423         my $head = git_read_head($project);
1424         my %co = git_read_commit($head);
1425         my %cd = date_str($co{'committer_epoch'}, $co{'committer_tz'});
1426
1427         my $owner;
1428         if (-f $projects_list) {
1429                 open (my $fd , $projects_list);
1430                 while (my $line = <$fd>) {
1431                         chomp $line;
1432                         my ($pr, $ow) = split ' ', $line;
1433                         $pr = unescape($pr);
1434                         $ow = unescape($ow);
1435                         if ($pr eq $project) {
1436                                 $owner = decode("utf8", $ow, Encode::FB_DEFAULT);
1437                                 last;
1438                         }
1439                 }
1440                 close $fd;
1441         }
1442         if (!defined $owner) {
1443                 $owner = get_file_owner("$projectroot/$project");
1444         }
1445
1446         my $refs = read_info_ref();
1447         git_header_html();
1448         git_page_nav('summary','', $head);
1449
1450         print "<div class=\"title\">&nbsp;</div>\n";
1451         print "<table cellspacing=\"0\">\n" .
1452               "<tr><td>description</td><td>" . esc_html($descr) . "</td></tr>\n" .
1453               "<tr><td>owner</td><td>$owner</td></tr>\n" .
1454               "<tr><td>last change</td><td>$cd{'rfc2822'}</td></tr>\n" .
1455               "</table>\n";
1456
1457         open my $fd, "-|", $GIT, "rev-list", "--max-count=17", git_read_head($project)
1458                 or die_error(undef, "Open git-rev-list failed.");
1459         my @revlist = map { chomp; $_ } <$fd>;
1460         close $fd;
1461         git_header_div('shortlog');
1462         git_shortlog_body(\@revlist, 0, 15, $refs,
1463                           $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=shortlog")}, "..."));
1464
1465         my $taglist = git_read_refs("refs/tags");
1466         if (defined @$taglist) {
1467                 git_header_div('tags');
1468                 git_tags_body($taglist, 0, 15,
1469                               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=tags")}, "..."));
1470         }
1471
1472         my $headlist = git_read_refs("refs/heads");
1473         if (defined @$headlist) {
1474                 git_header_div('heads');
1475                 git_heads_body($taglist, $head, 0, 15,
1476                                $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=heads")}, "..."));
1477         }
1478
1479         git_footer_html();
1480 }
1481
1482 sub git_tag {
1483         my $head = git_read_head($project);
1484         git_header_html();
1485         git_page_nav('','', $head,undef,$head);
1486         my %tag = git_read_tag($hash);
1487         git_header_div('commit', esc_html($tag{'name'}), $hash);
1488         print "<div class=\"title_text\">\n" .
1489               "<table cellspacing=\"0\">\n" .
1490               "<tr>\n" .
1491               "<td>object</td>\n" .
1492               "<td>" . $cgi->a({-class => "list", -href => "$my_uri?" . esc_param("p=$project;a=$tag{'type'};h=$tag{'object'}")}, $tag{'object'}) . "</td>\n" .
1493               "<td class=\"link\">" . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=$tag{'type'};h=$tag{'object'}")}, $tag{'type'}) . "</td>\n" .
1494               "</tr>\n";
1495         if (defined($tag{'author'})) {
1496                 my %ad = date_str($tag{'epoch'}, $tag{'tz'});
1497                 print "<tr><td>author</td><td>" . esc_html($tag{'author'}) . "</td></tr>\n";
1498                 print "<tr><td></td><td>" . $ad{'rfc2822'} . sprintf(" (%02d:%02d %s)", $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'}) . "</td></tr>\n";
1499         }
1500         print "</table>\n\n" .
1501               "</div>\n";
1502         print "<div class=\"page_body\">";
1503         my $comment = $tag{'comment'};
1504         foreach my $line (@$comment) {
1505                 print esc_html($line) . "<br/>\n";
1506         }
1507         print "</div>\n";
1508         git_footer_html();
1509 }
1510
1511 sub git_blame2 {
1512         my $fd;
1513         my $ftype;
1514         die_error(undef, "Permission denied.") if (!git_get_project_config_bool ('blame'));
1515         die_error('404 Not Found', "File name not defined") if (!$file_name);
1516         $hash_base ||= git_read_head($project);
1517         die_error(undef, "Reading commit failed") unless ($hash_base);
1518         my %co = git_read_commit($hash_base)
1519                 or die_error(undef, "Reading commit failed");
1520         if (!defined $hash) {
1521                 $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
1522                         or die_error(undef, "Error looking up file");
1523         }
1524         $ftype = git_get_type($hash);
1525         if ($ftype !~ "blob") {
1526                 die_error("400 Bad Request", "object is not a blob");
1527         }
1528         open ($fd, "-|", $GIT, "blame", '-l', $file_name, $hash_base)
1529                 or die_error(undef, "Open git-blame failed.");
1530         git_header_html();
1531         my $formats_nav =
1532                 $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;h=$hash;hb=$hash_base;f=$file_name")}, "blob") .
1533                 " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blame;f=$file_name")}, "head");
1534         git_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
1535         git_header_div('commit', esc_html($co{'title'}), $hash_base);
1536         git_print_page_path($file_name, $ftype);
1537         my @rev_color = (qw(light dark));
1538         my $num_colors = scalar(@rev_color);
1539         my $current_color = 0;
1540         my $last_rev;
1541         print "<div class=\"page_body\">\n";
1542         print "<table class=\"blame\">\n";
1543         print "<tr><th>Commit</th><th>Line</th><th>Data</th></tr>\n";
1544         while (<$fd>) {
1545                 /^([0-9a-fA-F]{40}).*?(\d+)\)\s{1}(\s*.*)/;
1546                 my $full_rev = $1;
1547                 my $rev = substr($full_rev, 0, 8);
1548                 my $lineno = $2;
1549                 my $data = $3;
1550
1551                 if (!defined $last_rev) {
1552                         $last_rev = $full_rev;
1553                 } elsif ($last_rev ne $full_rev) {
1554                         $last_rev = $full_rev;
1555                         $current_color = ++$current_color % $num_colors;
1556                 }
1557                 print "<tr class=\"$rev_color[$current_color]\">\n";
1558                 print "<td class=\"sha1\">" .
1559                         $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commit;h=$full_rev;f=$file_name")}, esc_html($rev)) . "</td>\n";
1560                 print "<td class=\"linenr\"><a id=\"l$lineno\" href=\"#l$lineno\" class=\"linenr\">" . esc_html($lineno) . "</a></td>\n";
1561                 print "<td class=\"pre\">" . esc_html($data) . "</td>\n";
1562                 print "</tr>\n";
1563         }
1564         print "</table>\n";
1565         print "</div>";
1566         close $fd or print "Reading blob failed\n";
1567         git_footer_html();
1568 }
1569
1570 sub git_blame {
1571         my $fd;
1572         die_error('403 Permission denied', "Permission denied.") if (!git_get_project_config_bool ('blame'));
1573         die_error('404 Not Found', "What file will it be, master?") if (!$file_name);
1574         $hash_base ||= git_read_head($project);
1575         die_error(undef, "Reading commit failed.") unless ($hash_base);
1576         my %co = git_read_commit($hash_base)
1577                 or die_error(undef, "Reading commit failed.");
1578         if (!defined $hash) {
1579                 $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
1580                         or die_error(undef, "Error lookup file.");
1581         }
1582         open ($fd, "-|", $GIT, "annotate", '-l', '-t', '-r', $file_name, $hash_base)
1583                 or die_error(undef, "Open git-annotate failed.");
1584         git_header_html();
1585         my $formats_nav =
1586                 $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;h=$hash;hb=$hash_base;f=$file_name")}, "blob") .
1587                 " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blame;f=$file_name")}, "head");
1588         git_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
1589         git_header_div('commit', esc_html($co{'title'}), $hash_base);
1590         git_print_page_path($file_name);
1591         print "<div class=\"page_body\">\n";
1592         print <<HTML;
1593 <table class="blame">
1594   <tr>
1595     <th>Commit</th>
1596     <th>Age</th>
1597     <th>Author</th>
1598     <th>Line</th>
1599     <th>Data</th>
1600   </tr>
1601 HTML
1602         my @line_class = (qw(light dark));
1603         my $line_class_len = scalar (@line_class);
1604         my $line_class_num = $#line_class;
1605         while (my $line = <$fd>) {
1606                 my $long_rev;
1607                 my $short_rev;
1608                 my $author;
1609                 my $time;
1610                 my $lineno;
1611                 my $data;
1612                 my $age;
1613                 my $age_str;
1614                 my $age_class;
1615
1616                 chomp $line;
1617                 $line_class_num = ($line_class_num + 1) % $line_class_len;
1618
1619                 if ($line =~ m/^([0-9a-fA-F]{40})\t\(\s*([^\t]+)\t(\d+) \+\d\d\d\d\t(\d+)\)(.*)$/) {
1620                         $long_rev = $1;
1621                         $author   = $2;
1622                         $time     = $3;
1623                         $lineno   = $4;
1624                         $data     = $5;
1625                 } else {
1626                         print qq(  <tr><td colspan="5" class="error">Unable to parse: $line</td></tr>\n);
1627                         next;
1628                 }
1629                 $short_rev  = substr ($long_rev, 0, 8);
1630                 $age        = time () - $time;
1631                 $age_str    = age_string ($age);
1632                 $age_str    =~ s/ /&nbsp;/g;
1633                 $age_class  = age_class($age);
1634                 $author     = esc_html ($author);
1635                 $author     =~ s/ /&nbsp;/g;
1636                 # escape tabs
1637                 while ((my $pos = index($data, "\t")) != -1) {
1638                         if (my $count = (8 - ($pos % 8))) {
1639                                 my $spaces = ' ' x $count;
1640                                 $data =~ s/\t/$spaces/;
1641                         }
1642                 }
1643                 $data = esc_html ($data);
1644
1645                 print <<HTML;
1646   <tr class="$line_class[$line_class_num]">
1647     <td class="sha1"><a href="$my_uri?${\esc_param ("p=$project;a=commit;h=$long_rev")}" class="text">$short_rev..</a></td>
1648     <td class="$age_class">$age_str</td>
1649     <td>$author</td>
1650     <td class="linenr"><a id="$lineno" href="#$lineno" class="linenr">$lineno</a></td>
1651     <td class="pre">$data</td>
1652   </tr>
1653 HTML
1654         } # while (my $line = <$fd>)
1655         print "</table>\n\n";
1656         close $fd or print "Reading blob failed.\n";
1657         print "</div>";
1658         git_footer_html();
1659 }
1660
1661 sub git_tags {
1662         my $head = git_read_head($project);
1663         git_header_html();
1664         git_page_nav('','', $head,undef,$head);
1665         git_header_div('summary', $project);
1666
1667         my $taglist = git_read_refs("refs/tags");
1668         if (defined @$taglist) {
1669                 git_tags_body($taglist);
1670         }
1671         git_footer_html();
1672 }
1673
1674 sub git_heads {
1675         my $head = git_read_head($project);
1676         git_header_html();
1677         git_page_nav('','', $head,undef,$head);
1678         git_header_div('summary', $project);
1679
1680         my $taglist = git_read_refs("refs/heads");
1681         my $alternate = 0;
1682         if (defined @$taglist) {
1683                 git_heads_body($taglist, $head);
1684         }
1685         git_footer_html();
1686 }
1687
1688 sub git_blob_plain {
1689         if (!defined $hash) {
1690                 if (defined $file_name) {
1691                         my $base = $hash_base || git_read_head($project);
1692                         $hash = git_get_hash_by_path($base, $file_name, "blob")
1693                                 or die_error(undef, "Error lookup file.");
1694                 } else {
1695                         die_error(undef, "No file name defined.");
1696                 }
1697         }
1698         my $type = shift;
1699         open my $fd, "-|", $GIT, "cat-file", "blob", $hash
1700                 or die_error("Couldn't cat $file_name, $hash");
1701
1702         $type ||= git_blob_plain_mimetype($fd, $file_name);
1703
1704         # save as filename, even when no $file_name is given
1705         my $save_as = "$hash";
1706         if (defined $file_name) {
1707                 $save_as = $file_name;
1708         } elsif ($type =~ m/^text\//) {
1709                 $save_as .= '.txt';
1710         }
1711
1712         print $cgi->header(-type => "$type", '-content-disposition' => "inline; filename=\"$save_as\"");
1713         undef $/;
1714         binmode STDOUT, ':raw';
1715         print <$fd>;
1716         binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
1717         $/ = "\n";
1718         close $fd;
1719 }
1720
1721 sub git_blob {
1722         if (!defined $hash) {
1723                 if (defined $file_name) {
1724                         my $base = $hash_base || git_read_head($project);
1725                         $hash = git_get_hash_by_path($base, $file_name, "blob")
1726                                 or die_error(undef, "Error lookup file.");
1727                 } else {
1728                         die_error(undef, "No file name defined.");
1729                 }
1730         }
1731         my $have_blame = git_get_project_config_bool ('blame');
1732         open my $fd, "-|", $GIT, "cat-file", "blob", $hash
1733                 or die_error(undef, "Couldn't cat $file_name, $hash.");
1734         my $mimetype = git_blob_plain_mimetype($fd, $file_name);
1735         if ($mimetype !~ m/^text\//) {
1736                 close $fd;
1737                 return git_blob_plain($mimetype);
1738         }
1739         git_header_html();
1740         my $formats_nav = '';
1741         if (defined $hash_base && (my %co = git_read_commit($hash_base))) {
1742                 if (defined $file_name) {
1743                         if ($have_blame) {
1744                                 $formats_nav .= $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blame;h=$hash;hb=$hash_base;f=$file_name")}, "blame") . " | ";
1745                         }
1746                         $formats_nav .=
1747                                 $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob_plain;h=$hash;f=$file_name")}, "plain") .
1748                                 " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;hb=HEAD;f=$file_name")}, "head");
1749                 } else {
1750                         $formats_nav .= $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob_plain;h=$hash")}, "plain");
1751                 }
1752                 git_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
1753                 git_header_div('commit', esc_html($co{'title'}), $hash_base);
1754         } else {
1755                 print "<div class=\"page_nav\">\n" .
1756                       "<br/><br/></div>\n" .
1757                       "<div class=\"title\">$hash</div>\n";
1758         }
1759         git_print_page_path($file_name, "blob");
1760         print "<div class=\"page_body\">\n";
1761         my $nr;
1762         while (my $line = <$fd>) {
1763                 chomp $line;
1764                 $nr++;
1765                 while ((my $pos = index($line, "\t")) != -1) {
1766                         if (my $count = (8 - ($pos % 8))) {
1767                                 my $spaces = ' ' x $count;
1768                                 $line =~ s/\t/$spaces/;
1769                         }
1770                 }
1771                 printf "<div class=\"pre\"><a id=\"l%i\" href=\"#l%i\" class=\"linenr\">%4i</a> %s</div>\n", $nr, $nr, $nr, esc_html($line);
1772         }
1773         close $fd or print "Reading blob failed.\n";
1774         print "</div>";
1775         git_footer_html();
1776 }
1777
1778 sub git_tree {
1779         if (!defined $hash) {
1780                 $hash = git_read_head($project);
1781                 if (defined $file_name) {
1782                         my $base = $hash_base || $hash;
1783                         $hash = git_get_hash_by_path($base, $file_name, "tree");
1784                 }
1785                 if (!defined $hash_base) {
1786                         $hash_base = $hash;
1787                 }
1788         }
1789         $/ = "\0";
1790         open my $fd, "-|", $GIT, "ls-tree", '-z', $hash
1791                 or die_error(undef, "Open git-ls-tree failed.");
1792         my @entries = map { chomp; $_ } <$fd>;
1793         close $fd or die_error(undef, "Reading tree failed.");
1794         $/ = "\n";
1795
1796         my $refs = read_info_ref();
1797         my $ref = git_get_referencing($refs, $hash_base);
1798         git_header_html();
1799         my $base_key = "";
1800         my $base = "";
1801         if (defined $hash_base && (my %co = git_read_commit($hash_base))) {
1802                 $base_key = ";hb=$hash_base";
1803                 git_page_nav('tree','', $hash_base);
1804                 git_header_div('commit', esc_html($co{'title'}) . $ref, $hash_base);
1805         } else {
1806                 print "<div class=\"page_nav\">\n";
1807                 print "<br/><br/></div>\n";
1808                 print "<div class=\"title\">$hash</div>\n";
1809         }
1810         if (defined $file_name) {
1811                 $base = esc_html("$file_name/");
1812         }
1813         git_print_page_path($file_name);
1814         print "<div class=\"page_body\">\n";
1815         print "<table cellspacing=\"0\">\n";
1816         my $alternate = 0;
1817         foreach my $line (@entries) {
1818                 #'100644        blob    0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa        panic.c'
1819                 $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t(.+)$/;
1820                 my $t_mode = $1;
1821                 my $t_type = $2;
1822                 my $t_hash = $3;
1823                 my $t_name = validate_input($4);
1824                 if ($alternate) {
1825                         print "<tr class=\"dark\">\n";
1826                 } else {
1827                         print "<tr class=\"light\">\n";
1828                 }
1829                 $alternate ^= 1;
1830                 print "<td class=\"mode\">" . mode_str($t_mode) . "</td>\n";
1831                 if ($t_type eq "blob") {
1832                         print "<td class=\"list\">" .
1833                               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;h=$t_hash$base_key;f=$base$t_name"), -class => "list"}, esc_html($t_name)) .
1834                               "</td>\n" .
1835                               "<td class=\"link\">" .
1836                               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;h=$t_hash$base_key;f=$base$t_name")}, "blob") .
1837 #                             " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blame;h=$t_hash$base_key;f=$base$t_name")}, "blame") .
1838                               " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=history;h=$t_hash;hb=$hash_base;f=$base$t_name")}, "history") .
1839                               " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob_plain;h=$t_hash;f=$base$t_name")}, "raw") .
1840                               "</td>\n";
1841                 } elsif ($t_type eq "tree") {
1842                         print "<td class=\"list\">" .
1843                               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=tree;h=$t_hash$base_key;f=$base$t_name")}, esc_html($t_name)) .
1844                               "</td>\n" .
1845                               "<td class=\"link\">" .
1846                               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=tree;h=$t_hash$base_key;f=$base$t_name")}, "tree") .
1847                               " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=history;hb=$hash_base;f=$base$t_name")}, "history") .
1848                               "</td>\n";
1849                 }
1850                 print "</tr>\n";
1851         }
1852         print "</table>\n" .
1853               "</div>";
1854         git_footer_html();
1855 }
1856
1857 sub git_log {
1858         my $head = git_read_head($project);
1859         if (!defined $hash) {
1860                 $hash = $head;
1861         }
1862         if (!defined $page) {
1863                 $page = 0;
1864         }
1865         my $refs = read_info_ref();
1866
1867         my $limit = sprintf("--max-count=%i", (100 * ($page+1)));
1868         open my $fd, "-|", $GIT, "rev-list", $limit, $hash
1869                 or die_error(undef, "Open git-rev-list failed.");
1870         my @revlist = map { chomp; $_ } <$fd>;
1871         close $fd;
1872
1873         my $paging_nav = git_get_paging_nav('log', $hash, $head, $page, $#revlist);
1874
1875         git_header_html();
1876         git_page_nav('log','', $hash,undef,undef, $paging_nav);
1877
1878         if (!@revlist) {
1879                 my %co = git_read_commit($hash);
1880
1881                 git_header_div('summary', $project);
1882                 print "<div class=\"page_body\"> Last change $co{'age_string'}.<br/><br/></div>\n";
1883         }
1884         for (my $i = ($page * 100); $i <= $#revlist; $i++) {
1885                 my $commit = $revlist[$i];
1886                 my $ref = git_get_referencing($refs, $commit);
1887                 my %co = git_read_commit($commit);
1888                 next if !%co;
1889                 my %ad = date_str($co{'author_epoch'});
1890                 git_header_div('commit',
1891                                                                          "<span class=\"age\">$co{'age_string'}</span>" .
1892                                                                          esc_html($co{'title'}) . $ref,
1893                                                                          $commit);
1894                 print "<div class=\"title_text\">\n" .
1895                       "<div class=\"log_link\">\n" .
1896                       $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commit;h=$commit")}, "commit") .
1897                       " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commitdiff;h=$commit")}, "commitdiff") .
1898                       "<br/>\n" .
1899                       "</div>\n" .
1900                       "<i>" . esc_html($co{'author_name'}) .  " [$ad{'rfc2822'}]</i><br/>\n" .
1901                       "</div>\n" .
1902                       "<div class=\"log_body\">\n";
1903                 my $comment = $co{'comment'};
1904                 my $empty = 0;
1905                 foreach my $line (@$comment) {
1906                         if ($line =~ m/^ *(signed[ \-]off[ \-]by[ :]|acked[ \-]by[ :]|cc[ :])/i) {
1907                                 next;
1908                         }
1909                         if ($line eq "") {
1910                                 if ($empty) {
1911                                         next;
1912                                 }
1913                                 $empty = 1;
1914                         } else {
1915                                 $empty = 0;
1916                         }
1917                         print format_log_line_html($line) . "<br/>\n";
1918                 }
1919                 if (!$empty) {
1920                         print "<br/>\n";
1921                 }
1922                 print "</div>\n";
1923         }
1924         git_footer_html();
1925 }
1926
1927 sub git_commit {
1928         my %co = git_read_commit($hash);
1929         if (!%co) {
1930                 die_error(undef, "Unknown commit object.");
1931         }
1932         my %ad = date_str($co{'author_epoch'}, $co{'author_tz'});
1933         my %cd = date_str($co{'committer_epoch'}, $co{'committer_tz'});
1934
1935         my $parent = $co{'parent'};
1936         if (!defined $parent) {
1937                 $parent = "--root";
1938         }
1939         open my $fd, "-|", $GIT, "diff-tree", '-r', '-M', $parent, $hash
1940                 or die_error(undef, "Open git-diff-tree failed.");
1941         my @difftree = map { chomp; $_ } <$fd>;
1942         close $fd or die_error(undef, "Reading git-diff-tree failed.");
1943
1944         # non-textual hash id's can be cached
1945         my $expires;
1946         if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
1947                 $expires = "+1d";
1948         }
1949         my $refs = read_info_ref();
1950         my $ref = git_get_referencing($refs, $co{'id'});
1951         my $formats_nav = '';
1952         if (defined $file_name && defined $co{'parent'}) {
1953                 my $parent = $co{'parent'};
1954                 $formats_nav .= $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blame;hb=$parent;f=$file_name")}, "blame");
1955         }
1956         git_header_html(undef, $expires);
1957         git_page_nav('commit', defined $co{'parent'} ? '' : 'commitdiff',
1958                                                          $hash, $co{'tree'}, $hash,
1959                                                          $formats_nav);
1960
1961         if (defined $co{'parent'}) {
1962                 git_header_div('commitdiff', esc_html($co{'title'}) . $ref, $hash);
1963         } else {
1964                 git_header_div('tree', esc_html($co{'title'}) . $ref, $co{'tree'}, $hash);
1965         }
1966         print "<div class=\"title_text\">\n" .
1967               "<table cellspacing=\"0\">\n";
1968         print "<tr><td>author</td><td>" . esc_html($co{'author'}) . "</td></tr>\n".
1969               "<tr>" .
1970               "<td></td><td> $ad{'rfc2822'}";
1971         if ($ad{'hour_local'} < 6) {
1972                 printf(" (<span class=\"atnight\">%02d:%02d</span> %s)", $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
1973         } else {
1974                 printf(" (%02d:%02d %s)", $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
1975         }
1976         print "</td>" .
1977               "</tr>\n";
1978         print "<tr><td>committer</td><td>" . esc_html($co{'committer'}) . "</td></tr>\n";
1979         print "<tr><td></td><td> $cd{'rfc2822'}" . sprintf(" (%02d:%02d %s)", $cd{'hour_local'}, $cd{'minute_local'}, $cd{'tz_local'}) . "</td></tr>\n";
1980         print "<tr><td>commit</td><td class=\"sha1\">$co{'id'}</td></tr>\n";
1981         print "<tr>" .
1982               "<td>tree</td>" .
1983               "<td class=\"sha1\">" .
1984               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=tree;h=$co{'tree'};hb=$hash"), class => "list"}, $co{'tree'}) .
1985               "</td>" .
1986               "<td class=\"link\">" . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=tree;h=$co{'tree'};hb=$hash")}, "tree") .
1987               "</td>" .
1988               "</tr>\n";
1989         my $parents = $co{'parents'};
1990         foreach my $par (@$parents) {
1991                 print "<tr>" .
1992                       "<td>parent</td>" .
1993                       "<td class=\"sha1\">" . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commit;h=$par"), class => "list"}, $par) . "</td>" .
1994                       "<td class=\"link\">" .
1995                       $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commit;h=$par")}, "commit") .
1996                       " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commitdiff;h=$hash;hp=$par")}, "commitdiff") .
1997                       "</td>" .
1998                       "</tr>\n";
1999         }
2000         print "</table>".
2001               "</div>\n";
2002         print "<div class=\"page_body\">\n";
2003         my $comment = $co{'comment'};
2004         my $empty = 0;
2005         my $signed = 0;
2006         foreach my $line (@$comment) {
2007                 # print only one empty line
2008                 if ($line eq "") {
2009                         if ($empty || $signed) {
2010                                 next;
2011                         }
2012                         $empty = 1;
2013                 } else {
2014                         $empty = 0;
2015                 }
2016                 if ($line =~ m/^ *(signed[ \-]off[ \-]by[ :]|acked[ \-]by[ :]|cc[ :])/i) {
2017                         $signed = 1;
2018                         print "<span class=\"signoff\">" . esc_html($line) . "</span><br/>\n";
2019                 } else {
2020                         $signed = 0;
2021                         print format_log_line_html($line) . "<br/>\n";
2022                 }
2023         }
2024         print "</div>\n";
2025         print "<div class=\"list_head\">\n";
2026         if ($#difftree > 10) {
2027                 print(($#difftree + 1) . " files changed:\n");
2028         }
2029         print "</div>\n";
2030         print "<table class=\"diff_tree\">\n";
2031         my $alternate = 0;
2032         foreach my $line (@difftree) {
2033                 # ':100644 100644 03b218260e99b78c6df0ed378e59ed9205ccc96d 3b93d5e7cc7f7dd4ebed13a5cc1a4ad976fc94d8 M      ls-files.c'
2034                 # ':100644 100644 7f9281985086971d3877aca27704f2aaf9c448ce bc190ebc71bbd923f2b728e505408f5e54bd073a M      rev-tree.c'
2035                 if (!($line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)([0-9]{0,3})\t(.*)$/)) {
2036                         next;
2037                 }
2038                 my $from_mode = $1;
2039                 my $to_mode = $2;
2040                 my $from_id = $3;
2041                 my $to_id = $4;
2042                 my $status = $5;
2043                 my $similarity = $6;
2044                 my $file = validate_input(unquote($7));
2045                 if ($alternate) {
2046                         print "<tr class=\"dark\">\n";
2047                 } else {
2048                         print "<tr class=\"light\">\n";
2049                 }
2050                 $alternate ^= 1;
2051                 if ($status eq "A") {
2052                         my $mode_chng = "";
2053                         if (S_ISREG(oct $to_mode)) {
2054                                 $mode_chng = sprintf(" with mode: %04o", (oct $to_mode) & 0777);
2055                         }
2056                         print "<td>" .
2057                               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;h=$to_id;hb=$hash;f=$file"), -class => "list"}, esc_html($file)) . "</td>\n" .
2058                               "<td><span class=\"file_status new\">[new " . file_type($to_mode) . "$mode_chng]</span></td>\n" .
2059                               "<td class=\"link\">" . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;h=$to_id;hb=$hash;f=$file")}, "blob") . "</td>\n";
2060                 } elsif ($status eq "D") {
2061                         print "<td>" .
2062                               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;h=$from_id;hb=$hash;f=$file"), -class => "list"}, esc_html($file)) . "</td>\n" .
2063                               "<td><span class=\"file_status deleted\">[deleted " . file_type($from_mode). "]</span></td>\n" .
2064                               "<td class=\"link\">" .
2065                               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;h=$from_id;hb=$hash;f=$file")}, "blob") .
2066                               " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=history;hb=$hash;f=$file")}, "history") .
2067                               "</td>\n"
2068                 } elsif ($status eq "M" || $status eq "T") {
2069                         my $mode_chnge = "";
2070                         if ($from_mode != $to_mode) {
2071                                 $mode_chnge = " <span class=\"file_status mode_chnge\">[changed";
2072                                 if (((oct $from_mode) & S_IFMT) != ((oct $to_mode) & S_IFMT)) {
2073                                         $mode_chnge .= " from " . file_type($from_mode) . " to " . file_type($to_mode);
2074                                 }
2075                                 if (((oct $from_mode) & 0777) != ((oct $to_mode) & 0777)) {
2076                                         if (S_ISREG($from_mode) && S_ISREG($to_mode)) {
2077                                                 $mode_chnge .= sprintf(" mode: %04o->%04o", (oct $from_mode) & 0777, (oct $to_mode) & 0777);
2078                                         } elsif (S_ISREG($to_mode)) {
2079                                                 $mode_chnge .= sprintf(" mode: %04o", (oct $to_mode) & 0777);
2080                                         }
2081                                 }
2082                                 $mode_chnge .= "]</span>\n";
2083                         }
2084                         print "<td>";
2085                         if ($to_id ne $from_id) {
2086                                 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));
2087                         } else {
2088                                 print $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;h=$to_id;hb=$hash;f=$file"), -class => "list"}, esc_html($file));
2089                         }
2090                         print "</td>\n" .
2091                               "<td>$mode_chnge</td>\n" .
2092                               "<td class=\"link\">";
2093                         print $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;h=$to_id;hb=$hash;f=$file")}, "blob");
2094                         if ($to_id ne $from_id) {
2095                                 print " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blobdiff;h=$to_id;hp=$from_id;hb=$hash;f=$file")}, "diff");
2096                         }
2097                         print " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=history;hb=$hash;f=$file")}, "history") . "\n";
2098                         print "</td>\n";
2099                 } elsif ($status eq "R") {
2100                         my ($from_file, $to_file) = split "\t", $file;
2101                         my $mode_chng = "";
2102                         if ($from_mode != $to_mode) {
2103                                 $mode_chng = sprintf(", mode: %04o", (oct $to_mode) & 0777);
2104                         }
2105                         print "<td>" .
2106                               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;h=$to_id;hb=$hash;f=$to_file"), -class => "list"}, esc_html($to_file)) . "</td>\n" .
2107                               "<td><span class=\"file_status moved\">[moved from " .
2108                               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;h=$from_id;hb=$hash;f=$from_file"), -class => "list"}, esc_html($from_file)) .
2109                               " with " . (int $similarity) . "% similarity$mode_chng]</span></td>\n" .
2110                               "<td class=\"link\">" .
2111                               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;h=$to_id;hb=$hash;f=$to_file")}, "blob");
2112                         if ($to_id ne $from_id) {
2113                                 print " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blobdiff;h=$to_id;hp=$from_id;hb=$hash;f=$to_file")}, "diff");
2114                         }
2115                         print "</td>\n";
2116                 }
2117                 print "</tr>\n";
2118         }
2119         print "</table>\n";
2120         git_footer_html();
2121 }
2122
2123 sub git_blobdiff {
2124         mkdir($git_temp, 0700);
2125         git_header_html();
2126         if (defined $hash_base && (my %co = git_read_commit($hash_base))) {
2127                 my $formats_nav =
2128                         $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blobdiff_plain;h=$hash;hp=$hash_parent")}, "plain");
2129                 git_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
2130                 git_header_div('commit', esc_html($co{'title'}), $hash_base);
2131         } else {
2132                 print "<div class=\"page_nav\">\n" .
2133                       "<br/><br/></div>\n" .
2134                       "<div class=\"title\">$hash vs $hash_parent</div>\n";
2135         }
2136         git_print_page_path($file_name, "blob");
2137         print "<div class=\"page_body\">\n" .
2138               "<div class=\"diff_info\">blob:" .
2139               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;h=$hash_parent;hb=$hash_base;f=$file_name")}, $hash_parent) .
2140               " -> blob:" .
2141               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;h=$hash;hb=$hash_base;f=$file_name")}, $hash) .
2142               "</div>\n";
2143         git_diff_print($hash_parent, $file_name || $hash_parent, $hash, $file_name || $hash);
2144         print "</div>";
2145         git_footer_html();
2146 }
2147
2148 sub git_blobdiff_plain {
2149         mkdir($git_temp, 0700);
2150         print $cgi->header(-type => "text/plain", -charset => 'utf-8');
2151         git_diff_print($hash_parent, $file_name || $hash_parent, $hash, $file_name || $hash, "plain");
2152 }
2153
2154 sub git_commitdiff {
2155         mkdir($git_temp, 0700);
2156         my %co = git_read_commit($hash);
2157         if (!%co) {
2158                 die_error(undef, "Unknown commit object.");
2159         }
2160         if (!defined $hash_parent) {
2161                 $hash_parent = $co{'parent'};
2162         }
2163         open my $fd, "-|", $GIT, "diff-tree", '-r', $hash_parent, $hash
2164                 or die_error(undef, "Open git-diff-tree failed.");
2165         my @difftree = map { chomp; $_ } <$fd>;
2166         close $fd or die_error(undef, "Reading diff-tree failed.");
2167
2168         # non-textual hash id's can be cached
2169         my $expires;
2170         if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
2171                 $expires = "+1d";
2172         }
2173         my $refs = read_info_ref();
2174         my $ref = git_get_referencing($refs, $co{'id'});
2175         my $formats_nav =
2176                 $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commitdiff_plain;h=$hash;hp=$hash_parent")}, "plain");
2177         git_header_html(undef, $expires);
2178         git_page_nav('commitdiff','', $hash,$co{'tree'},$hash, $formats_nav);
2179         git_header_div('commit', esc_html($co{'title'}) . $ref, $hash);
2180         print "<div class=\"page_body\">\n";
2181         my $comment = $co{'comment'};
2182         my $empty = 0;
2183         my $signed = 0;
2184         my @log = @$comment;
2185         # remove first and empty lines after that
2186         shift @log;
2187         while (defined $log[0] && $log[0] eq "") {
2188                 shift @log;
2189         }
2190         foreach my $line (@log) {
2191                 if ($line =~ m/^ *(signed[ \-]off[ \-]by[ :]|acked[ \-]by[ :]|cc[ :])/i) {
2192                         next;
2193                 }
2194                 if ($line eq "") {
2195                         if ($empty) {
2196                                 next;
2197                         }
2198                         $empty = 1;
2199                 } else {
2200                         $empty = 0;
2201                 }
2202                 print format_log_line_html($line) . "<br/>\n";
2203         }
2204         print "<br/>\n";
2205         foreach my $line (@difftree) {
2206                 # ':100644 100644 03b218260e99b78c6df0ed378e59ed9205ccc96d 3b93d5e7cc7f7dd4ebed13a5cc1a4ad976fc94d8 M      ls-files.c'
2207                 # ':100644 100644 7f9281985086971d3877aca27704f2aaf9c448ce bc190ebc71bbd923f2b728e505408f5e54bd073a M      rev-tree.c'
2208                 $line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)\t(.*)$/;
2209                 my $from_mode = $1;
2210                 my $to_mode = $2;
2211                 my $from_id = $3;
2212                 my $to_id = $4;
2213                 my $status = $5;
2214                 my $file = validate_input(unquote($6));
2215                 if ($status eq "A") {
2216                         print "<div class=\"diff_info\">" . file_type($to_mode) . ":" .
2217                               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;h=$to_id;hb=$hash;f=$file")}, $to_id) . "(new)" .
2218                               "</div>\n";
2219                         git_diff_print(undef, "/dev/null", $to_id, "b/$file");
2220                 } elsif ($status eq "D") {
2221                         print "<div class=\"diff_info\">" . file_type($from_mode) . ":" .
2222                               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;h=$from_id;hb=$hash;f=$file")}, $from_id) . "(deleted)" .
2223                               "</div>\n";
2224                         git_diff_print($from_id, "a/$file", undef, "/dev/null");
2225                 } elsif ($status eq "M") {
2226                         if ($from_id ne $to_id) {
2227                                 print "<div class=\"diff_info\">" .
2228                                       file_type($from_mode) . ":" . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;h=$from_id;hb=$hash;f=$file")}, $from_id) .
2229                                       " -> " .
2230                                       file_type($to_mode) . ":" . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;h=$to_id;hb=$hash;f=$file")}, $to_id);
2231                                 print "</div>\n";
2232                                 git_diff_print($from_id, "a/$file",  $to_id, "b/$file");
2233                         }
2234                 }
2235         }
2236         print "<br/>\n" .
2237               "</div>";
2238         git_footer_html();
2239 }
2240
2241 sub git_commitdiff_plain {
2242         mkdir($git_temp, 0700);
2243         open my $fd, "-|", $GIT, "diff-tree", '-r', $hash_parent, $hash
2244                 or die_error(undef, "Open git-diff-tree failed.");
2245         my @difftree = map { chomp; $_ } <$fd>;
2246         close $fd or die_error(undef, "Reading diff-tree failed.");
2247
2248         # try to figure out the next tag after this commit
2249         my $tagname;
2250         my $refs = read_info_ref("tags");
2251         open $fd, "-|", $GIT, "rev-list", "HEAD";
2252         my @commits = map { chomp; $_ } <$fd>;
2253         close $fd;
2254         foreach my $commit (@commits) {
2255                 if (defined $refs->{$commit}) {
2256                         $tagname = $refs->{$commit}
2257                 }
2258                 if ($commit eq $hash) {
2259                         last;
2260                 }
2261         }
2262
2263         print $cgi->header(-type => "text/plain", -charset => 'utf-8', '-content-disposition' => "inline; filename=\"git-$hash.patch\"");
2264         my %co = git_read_commit($hash);
2265         my %ad = date_str($co{'author_epoch'}, $co{'author_tz'});
2266         my $comment = $co{'comment'};
2267         print "From: $co{'author'}\n" .
2268               "Date: $ad{'rfc2822'} ($ad{'tz_local'})\n".
2269               "Subject: $co{'title'}\n";
2270         if (defined $tagname) {
2271                 print "X-Git-Tag: $tagname\n";
2272         }
2273         print "X-Git-Url: $my_url?p=$project;a=commitdiff;h=$hash\n" .
2274               "\n";
2275
2276         foreach my $line (@$comment) {;
2277                 print "$line\n";
2278         }
2279         print "---\n\n";
2280
2281         foreach my $line (@difftree) {
2282                 $line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)\t(.*)$/;
2283                 my $from_id = $3;
2284                 my $to_id = $4;
2285                 my $status = $5;
2286                 my $file = $6;
2287                 if ($status eq "A") {
2288                         git_diff_print(undef, "/dev/null", $to_id, "b/$file", "plain");
2289                 } elsif ($status eq "D") {
2290                         git_diff_print($from_id, "a/$file", undef, "/dev/null", "plain");
2291                 } elsif ($status eq "M") {
2292                         git_diff_print($from_id, "a/$file",  $to_id, "b/$file", "plain");
2293                 }
2294         }
2295 }
2296
2297 sub git_history {
2298         if (!defined $hash_base) {
2299                 $hash_base = git_read_head($project);
2300         }
2301         my $ftype;
2302         my %co = git_read_commit($hash_base);
2303         if (!%co) {
2304                 die_error(undef, "Unknown commit object.");
2305         }
2306         my $refs = read_info_ref();
2307         git_header_html();
2308         git_page_nav('','', $hash_base,$co{'tree'},$hash_base);
2309         git_header_div('commit', esc_html($co{'title'}), $hash_base);
2310         if (!defined $hash && defined $file_name) {
2311                 $hash = git_get_hash_by_path($hash_base, $file_name);
2312         }
2313         if (defined $hash) {
2314                 $ftype = git_get_type($hash);
2315         }
2316         git_print_page_path($file_name, $ftype);
2317
2318         open my $fd, "-|",
2319                 $GIT, "rev-list", "--full-history", $hash_base, "--", $file_name;
2320         print "<table cellspacing=\"0\">\n";
2321         my $alternate = 0;
2322         while (my $line = <$fd>) {
2323                 if ($line =~ m/^([0-9a-fA-F]{40})/){
2324                         my $commit = $1;
2325                         my %co = git_read_commit($commit);
2326                         if (!%co) {
2327                                 next;
2328                         }
2329                         my $ref = git_get_referencing($refs, $commit);
2330                         if ($alternate) {
2331                                 print "<tr class=\"dark\">\n";
2332                         } else {
2333                                 print "<tr class=\"light\">\n";
2334                         }
2335                         $alternate ^= 1;
2336                         print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
2337                               "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 3)) . "</i></td>\n" .
2338                               "<td>" . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commit;h=$commit"), -class => "list"}, "<b>" .
2339                               esc_html(chop_str($co{'title'}, 50)) . "$ref</b>") . "</td>\n" .
2340                               "<td class=\"link\">" .
2341                               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commit;h=$commit")}, "commit") .
2342                               " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commitdiff;h=$commit")}, "commitdiff") .
2343                               " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;hb=$commit;f=$file_name")}, "blob");
2344                         my $blob = git_get_hash_by_path($hash_base, $file_name);
2345                         my $blob_parent = git_get_hash_by_path($commit, $file_name);
2346                         if (defined $blob && defined $blob_parent && $blob ne $blob_parent) {
2347                                 print " | " .
2348                                 $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blobdiff;h=$blob;hp=$blob_parent;hb=$commit;f=$file_name")},
2349                                 "diff to current");
2350                         }
2351                         print "</td>\n" .
2352                               "</tr>\n";
2353                 }
2354         }
2355         print "</table>\n";
2356         close $fd;
2357         git_footer_html();
2358 }
2359
2360 sub git_search {
2361         if (!defined $searchtext) {
2362                 die_error("", "Text field empty.");
2363         }
2364         if (!defined $hash) {
2365                 $hash = git_read_head($project);
2366         }
2367         my %co = git_read_commit($hash);
2368         if (!%co) {
2369                 die_error(undef, "Unknown commit object.");
2370         }
2371         # pickaxe may take all resources of your box and run for several minutes
2372         # with every query - so decide by yourself how public you make this feature :)
2373         my $commit_search = 1;
2374         my $author_search = 0;
2375         my $committer_search = 0;
2376         my $pickaxe_search = 0;
2377         if ($searchtext =~ s/^author\\://i) {
2378                 $author_search = 1;
2379         } elsif ($searchtext =~ s/^committer\\://i) {
2380                 $committer_search = 1;
2381         } elsif ($searchtext =~ s/^pickaxe\\://i) {
2382                 $commit_search = 0;
2383                 $pickaxe_search = 1;
2384         }
2385         git_header_html();
2386         git_page_nav('','', $hash,$co{'tree'},$hash);
2387         git_header_div('commit', esc_html($co{'title'}), $hash);
2388
2389         print "<table cellspacing=\"0\">\n";
2390         my $alternate = 0;
2391         if ($commit_search) {
2392                 $/ = "\0";
2393                 open my $fd, "-|", $GIT, "rev-list", "--header", "--parents", $hash or next;
2394                 while (my $commit_text = <$fd>) {
2395                         if (!grep m/$searchtext/i, $commit_text) {
2396                                 next;
2397                         }
2398                         if ($author_search && !grep m/\nauthor .*$searchtext/i, $commit_text) {
2399                                 next;
2400                         }
2401                         if ($committer_search && !grep m/\ncommitter .*$searchtext/i, $commit_text) {
2402                                 next;
2403                         }
2404                         my @commit_lines = split "\n", $commit_text;
2405                         my %co = git_read_commit(undef, \@commit_lines);
2406                         if (!%co) {
2407                                 next;
2408                         }
2409                         if ($alternate) {
2410                                 print "<tr class=\"dark\">\n";
2411                         } else {
2412                                 print "<tr class=\"light\">\n";
2413                         }
2414                         $alternate ^= 1;
2415                         print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
2416                               "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 5)) . "</i></td>\n" .
2417                               "<td>" .
2418                               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commit;h=$co{'id'}"), -class => "list"}, "<b>" . esc_html(chop_str($co{'title'}, 50)) . "</b><br/>");
2419                         my $comment = $co{'comment'};
2420                         foreach my $line (@$comment) {
2421                                 if ($line =~ m/^(.*)($searchtext)(.*)$/i) {
2422                                         my $lead = esc_html($1) || "";
2423                                         $lead = chop_str($lead, 30, 10);
2424                                         my $match = esc_html($2) || "";
2425                                         my $trail = esc_html($3) || "";
2426                                         $trail = chop_str($trail, 30, 10);
2427                                         my $text = "$lead<span class=\"match\">$match</span>$trail";
2428                                         print chop_str($text, 80, 5) . "<br/>\n";
2429                                 }
2430                         }
2431                         print "</td>\n" .
2432                               "<td class=\"link\">" .
2433                               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commit;h=$co{'id'}")}, "commit") .
2434                               " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=tree;h=$co{'tree'};hb=$co{'id'}")}, "tree");
2435                         print "</td>\n" .
2436                               "</tr>\n";
2437                 }
2438                 close $fd;
2439         }
2440
2441         if ($pickaxe_search) {
2442                 $/ = "\n";
2443                 open my $fd, "-|", "$GIT rev-list $hash | $GIT diff-tree -r --stdin -S\'$searchtext\'";
2444                 undef %co;
2445                 my @files;
2446                 while (my $line = <$fd>) {
2447                         if (%co && $line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)\t(.*)$/) {
2448                                 my %set;
2449                                 $set{'file'} = $6;
2450                                 $set{'from_id'} = $3;
2451                                 $set{'to_id'} = $4;
2452                                 $set{'id'} = $set{'to_id'};
2453                                 if ($set{'id'} =~ m/0{40}/) {
2454                                         $set{'id'} = $set{'from_id'};
2455                                 }
2456                                 if ($set{'id'} =~ m/0{40}/) {
2457                                         next;
2458                                 }
2459                                 push @files, \%set;
2460                         } elsif ($line =~ m/^([0-9a-fA-F]{40})$/){
2461                                 if (%co) {
2462                                         if ($alternate) {
2463                                                 print "<tr class=\"dark\">\n";
2464                                         } else {
2465                                                 print "<tr class=\"light\">\n";
2466                                         }
2467                                         $alternate ^= 1;
2468                                         print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
2469                                               "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 5)) . "</i></td>\n" .
2470                                               "<td>" .
2471                                               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commit;h=$co{'id'}"), -class => "list"}, "<b>" .
2472                                               esc_html(chop_str($co{'title'}, 50)) . "</b><br/>");
2473                                         while (my $setref = shift @files) {
2474                                                 my %set = %$setref;
2475                                                 print $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;h=$set{'id'};hb=$co{'id'};f=$set{'file'}"), class => "list"},
2476                                                       "<span class=\"match\">" . esc_html($set{'file'}) . "</span>") .
2477                                                       "<br/>\n";
2478                                         }
2479                                         print "</td>\n" .
2480                                               "<td class=\"link\">" .
2481                                               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commit;h=$co{'id'}")}, "commit") .
2482                                               " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=tree;h=$co{'tree'};hb=$co{'id'}")}, "tree");
2483                                         print "</td>\n" .
2484                                               "</tr>\n";
2485                                 }
2486                                 %co = git_read_commit($1);
2487                         }
2488                 }
2489                 close $fd;
2490         }
2491         print "</table>\n";
2492         git_footer_html();
2493 }
2494
2495 sub git_shortlog {
2496         my $head = git_read_head($project);
2497         if (!defined $hash) {
2498                 $hash = $head;
2499         }
2500         if (!defined $page) {
2501                 $page = 0;
2502         }
2503         my $refs = read_info_ref();
2504
2505         my $limit = sprintf("--max-count=%i", (100 * ($page+1)));
2506         open my $fd, "-|", $GIT, "rev-list", $limit, $hash
2507                 or die_error(undef, "Open git-rev-list failed.");
2508         my @revlist = map { chomp; $_ } <$fd>;
2509         close $fd;
2510
2511         my $paging_nav = git_get_paging_nav('shortlog', $hash, $head, $page, $#revlist);
2512         my $next_link = '';
2513         if ($#revlist >= (100 * ($page+1)-1)) {
2514                 $next_link =
2515                         $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=shortlog;h=$hash;pg=" . ($page+1)),
2516                                  -title => "Alt-n"}, "next");
2517         }
2518
2519
2520         git_header_html();
2521         git_page_nav('shortlog','', $hash,$hash,$hash, $paging_nav);
2522         git_header_div('summary', $project);
2523
2524         git_shortlog_body(\@revlist, ($page * 100), $#revlist, $refs, $next_link);
2525
2526         git_footer_html();
2527 }
2528
2529 ## ......................................................................
2530 ## feeds (RSS, OPML)
2531
2532 sub git_rss {
2533         # http://www.notestips.com/80256B3A007F2692/1/NAMO5P9UPQ
2534         open my $fd, "-|", $GIT, "rev-list", "--max-count=150", git_read_head($project)
2535                 or die_error(undef, "Open git-rev-list failed.");
2536         my @revlist = map { chomp; $_ } <$fd>;
2537         close $fd or die_error(undef, "Reading rev-list failed.");
2538         print $cgi->header(-type => 'text/xml', -charset => 'utf-8');
2539         print "<?xml version=\"1.0\" encoding=\"utf-8\"?>\n".
2540               "<rss version=\"2.0\" xmlns:content=\"http://purl.org/rss/1.0/modules/content/\">\n";
2541         print "<channel>\n";
2542         print "<title>$project</title>\n".
2543               "<link>" . esc_html("$my_url?p=$project;a=summary") . "</link>\n".
2544               "<description>$project log</description>\n".
2545               "<language>en</language>\n";
2546
2547         for (my $i = 0; $i <= $#revlist; $i++) {
2548                 my $commit = $revlist[$i];
2549                 my %co = git_read_commit($commit);
2550                 # we read 150, we always show 30 and the ones more recent than 48 hours
2551                 if (($i >= 20) && ((time - $co{'committer_epoch'}) > 48*60*60)) {
2552                         last;
2553                 }
2554                 my %cd = date_str($co{'committer_epoch'});
2555                 open $fd, "-|", $GIT, "diff-tree", '-r', $co{'parent'}, $co{'id'} or next;
2556                 my @difftree = map { chomp; $_ } <$fd>;
2557                 close $fd or next;
2558                 print "<item>\n" .
2559                       "<title>" .
2560                       sprintf("%d %s %02d:%02d", $cd{'mday'}, $cd{'month'}, $cd{'hour'}, $cd{'minute'}) . " - " . esc_html($co{'title'}) .
2561                       "</title>\n" .
2562                       "<author>" . esc_html($co{'author'}) . "</author>\n" .
2563                       "<pubDate>$cd{'rfc2822'}</pubDate>\n" .
2564                       "<guid isPermaLink=\"true\">" . esc_html("$my_url?p=$project;a=commit;h=$commit") . "</guid>\n" .
2565                       "<link>" . esc_html("$my_url?p=$project;a=commit;h=$commit") . "</link>\n" .
2566                       "<description>" . esc_html($co{'title'}) . "</description>\n" .
2567                       "<content:encoded>" .
2568                       "<![CDATA[\n";
2569                 my $comment = $co{'comment'};
2570                 foreach my $line (@$comment) {
2571                         $line = decode("utf8", $line, Encode::FB_DEFAULT);
2572                         print "$line<br/>\n";
2573                 }
2574                 print "<br/>\n";
2575                 foreach my $line (@difftree) {
2576                         if (!($line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)([0-9]{0,3})\t(.*)$/)) {
2577                                 next;
2578                         }
2579                         my $file = validate_input(unquote($7));
2580                         $file = decode("utf8", $file, Encode::FB_DEFAULT);
2581                         print "$file<br/>\n";
2582                 }
2583                 print "]]>\n" .
2584                       "</content:encoded>\n" .
2585                       "</item>\n";
2586         }
2587         print "</channel></rss>";
2588 }
2589
2590 sub git_opml {
2591         my @list = git_read_projects();
2592
2593         print $cgi->header(-type => 'text/xml', -charset => 'utf-8');
2594         print "<?xml version=\"1.0\" encoding=\"utf-8\"?>\n".
2595               "<opml version=\"1.0\">\n".
2596               "<head>".
2597               "  <title>$site_name Git OPML Export</title>\n".
2598               "</head>\n".
2599               "<body>\n".
2600               "<outline text=\"git RSS feeds\">\n";
2601
2602         foreach my $pr (@list) {
2603                 my %proj = %$pr;
2604                 my $head = git_read_head($proj{'path'});
2605                 if (!defined $head) {
2606                         next;
2607                 }
2608                 $ENV{'GIT_DIR'} = "$projectroot/$proj{'path'}";
2609                 my %co = git_read_commit($head);
2610                 if (!%co) {
2611                         next;
2612                 }
2613
2614                 my $path = esc_html(chop_str($proj{'path'}, 25, 5));
2615                 my $rss  = "$my_url?p=$proj{'path'};a=rss";
2616                 my $html = "$my_url?p=$proj{'path'};a=summary";
2617                 print "<outline type=\"rss\" text=\"$path\" title=\"$path\" xmlUrl=\"$rss\" htmlUrl=\"$html\"/>\n";
2618         }
2619         print "</outline>\n".
2620               "</body>\n".
2621               "</opml>\n";
2622 }