#!/usr/bin/perl -T # # cvsweb - a CGI interface to CVS trees. # # Written in their spare time by # Bill Fenner (original work) # extended by Henner Zeller , # Henrik Nordstrom # Ken Coar # Dick Balaska # Akinori MUSHA # Jens-Uwe Mager # Ville Skyttä # Vassilii Khachaturov # # Based on: # * Bill Fenners cvsweb.cgi revision 1.28 available from: # http://www.FreeBSD.org/cgi/cvsweb.cgi/www/en/cgi/cvsweb.cgi # # Copyright (c) 1996-1998 Bill Fenner # (c) 1998-1999 Henner Zeller # (c) 1999 Henrik Nordstrom # (c) 2000-2002 Akinori MUSHA # (c) 2002-2005 Ville Skyttä # All rights reserved. # # Redistribution and use in source and binary forms, with or without # modification, are permitted provided that the following conditions # are met: # 1. Redistributions of source code must retain the above copyright # notice, this list of conditions and the following disclaimer. # 2. Redistributions in binary form must reproduce the above copyright # notice, this list of conditions and the following disclaimer in the # documentation and/or other materials provided with the distribution. # # THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND # ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE # IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE # ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE # FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL # DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS # OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) # HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT # LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY # OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF # SUCH DAMAGE. # # $FreeBSD: www/en/cgi/cvsweb.cgi,v 1.91 2007/03/17 22:28:31 simon Exp $ # $Id: cvsweb.cgi,v 1.92 2008-09-23 16:31:45 wosch Exp $ # $Idaemons: /home/cvs/cvsweb/cvsweb.cgi,v 1.84 2001/10/07 20:50:10 knu Exp $ # ### require 5.006; use strict; use warnings; use filetest qw(access); use vars qw ( $VERSION $CheckoutMagic $MimeTypes $DEBUG $config $allow_version_select @CVSrepositories @CVSROOT %CVSROOT %CVSROOTdescr %MIRRORS %DEFAULTVALUE %ICONS %MTYPES %DIFF_COMMANDS @DIFFTYPES %DIFFTYPES @LOGSORTKEYS %LOGSORTKEYS %alltags %fileinfo %tags @branchnames %nameprinted %symrev %revsym @allrevisions %date %author @revdisplayorder @revisions %state %difflines %log %branchpoint @revorder $keywordsubstitution $prcgi @prcategories $re_prcategories $prkeyword $re_prkeyword $mancgi $doCheckout $scriptname $scriptwhere $where $Browser $nofilelinks $maycompress @stickyvars %funcline_regexp $is_links $is_lynx $is_w3m $is_msie $is_mozilla3 $is_textbased %input $query $barequery $sortby $bydate $byrev $byauthor $bylog $byfile $defaultDiffType $logsort $cvstree $cvsroot $charset $output_filter @command_path %CMD $allow_compress $backicon $diricon $fileicon $graphicon $fullname $cvstreedefault $logo $defaulttitle $address $binfileicon $long_intro $short_instruction $shortLogLen $show_author $tablepadding $hr_breakable $showfunc $hr_ignwhite $hr_ignkeysubst $inputTextSize $mime_types $allow_annotate $allow_markup $allow_mailtos $allow_log_extra $allow_dir_extra $allow_source_extra $allow_cvsgraph $cvsgraph_config $use_java_script $edit_option_form $show_subdir_lastmod $show_log_in_markup $preformat_in_markup $tabstop $state $annTable $sel @ForbiddenFiles $use_descriptions %descriptions @mytz $dwhere $use_moddate $gzip_open $file_list_len $allow_tar @tar_options @gzip_options @zip_options @cvs_options @annotate_options @rcsdiff_options $HTML_DOCTYPE $HTML_META $cssurl $CSS $cvshistory_url $allow_enscript @enscript_options %enscript_types ); use Cwd qw(abs_path); use File::Basename qw(dirname); use File::Path qw(rmtree); use File::Spec::Functions qw(canonpath catdir catfile curdir devnull rootdir tmpdir updir); use File::Temp qw(tempdir tempfile); use IPC::Run qw(); use Time::Local qw(timegm); use URI::Escape qw(uri_escape uri_unescape); use constant VALID_PATH => qr/^([[:^cntrl:]]+)$/o; use constant VALID_TAG1 => qr/^([a-zA-Z][[:graph:]]*)$/o; use constant VALID_TAG2 => qr/^([^\$,.:;@]+)$/o; use constant CVSWEBMARKUP => qr{^text/(x-cvsweb|vnd\.viewcvs)-markup$}io; use constant LOG_FILESEPR => qr/^={77}$/o; use constant LOG_REVSEPR => qr/^-{28}$/o; use constant HAS_ZLIB => eval { require Compress::Zlib; }; use constant HAS_EDIFF => eval { require String::Ediff; }; # ----------------------------------------------------------------------------- # All global initialization that can be done in compile time should go to # the BEGIN block. Persistent environments, such as mod_perl, will benefit # from this. BEGIN { $VERSION = '3.0.6'; $HTML_DOCTYPE = ''; $HTML_META = < EOM # Use MIME::Types for MIME type lookups if it's available. eval { require MIME::Types; $MimeTypes = MIME::Types->new(only_complete => 1); }; $MimeTypes = undef if $@; $CheckoutMagic = '~checkout~'; $cgi_style::hsty_base = 'http://www.FreeBSD.org'; $_ = q$FreeBSD: www/en/cgi/cvsweb.cgi,v 1.91 2007/03/17 22:28:31 simon Exp $; @_ = split; $cgi_style::hsty_date = "@_[3,4]"; # warningproof 0 if $cgi_style::hsty_base ne $cgi_style::hsty_date; package cgi_style; require "./cgi-style.pl"; $cgi_style::t_style = qq{\n\n}; package main; } # ----------------------------------------------------------------------------- sub printDiffSelect($); sub printDiffSelectStickyVars(); sub getDiffLinks($$$); sub printLogSortSelect($); sub findLastModifiedSubdirs(@); sub htmlify_sub(&$); sub htmlify($;$); sub spacedHtmlText($;$); sub link($$); sub revcmp($$); sub fatal($$@); sub config_error($$); sub redirect($;$); sub safeglob($); sub search_path($); sub getEnscriptHL($); sub getMimeType($;$); sub head($;$); sub scan_directives(@); sub openOutputFilter(); sub doAnnotate($$); sub doCheckout($$$); sub doEnscript($$$;$); sub doGraph(); sub doGraphView(); sub cvswebMarkup($$$$$$;$); sub viewable($); sub doDiff($$$$$$); sub getDirLogs($$@); sub readLog($;$); sub printLog($$$;$$); sub doLog($); sub flush_diff_rows($$$$); sub human_readable_diff($$); sub navigateHeader($$$$$;$); sub plural_write($$); sub readableTime($$); sub clickablePath($$); sub chooseCVSRoot(); sub chooseMirror(); sub fileSortCmp(); sub download_url($$;$); sub download_link($$$;$); sub display_url($$;$); sub display_link($$;$$); sub graph_link($;$); sub history_link($$;$); sub toggleQuery($;$); sub htmlquote($); sub htmlunquote($); sub uri_escape_path($); sub http_header(;$$); sub html_header($;$); sub html_footer(); sub link_tags($); sub forbidden($); sub startproc(@); sub runproc(@); sub checkout_to_temp($$$); # Get rid of unsafe environment vars. Don't do this in the BEGIN block # (think mod_perl)... delete(@ENV{qw(PATH IFS CDPATH ENV BASH_ENV)}); my ($mydir) = (dirname($0) =~ /(.*)/); # untaint ##### Start of Configuration Area ######## # == EDIT this == # Locations to search for user configuration, in order: for (catfile($mydir, 'cvsweb.conf'), '/usr/local/etc/cvsweb/cvsweb.conf') { if (-r $_) { $config = $_; last; } } ##### End of Configuration Area ######## undef $mydir; ######## Configuration parameters ######### @CVSrepositories = @CVSROOT = %CVSROOT = %MIRRORS = %DEFAULTVALUE = %ICONS = %MTYPES = %tags = %alltags = %fileinfo = %DIFF_COMMANDS = (); $cvstreedefault = $logo = $defaulttitle = $address = $long_intro = $short_instruction = $shortLogLen = $show_author = $tablepadding = $hr_breakable = $showfunc = $hr_ignwhite = $hr_ignkeysubst = $inputTextSize = $mime_types = $allow_annotate = $allow_markup = $allow_compress = $use_java_script = $edit_option_form = $show_subdir_lastmod = $show_log_in_markup = $preformat_in_markup = $tabstop = $use_moddate = $gzip_open = $DEBUG = $allow_cvsgraph = $cvsgraph_config = $cvshistory_url = $allow_tar = undef; $allow_version_select = $allow_mailtos = $allow_log_extra = 1; @DIFFTYPES = qw(h H u c s); @DIFFTYPES{@DIFFTYPES} = ( { 'descr' => 'colored', 'opts' => ['-u'], 'colored' => 1, }, { 'descr' => 'long colored', 'opts' => ['--unified=15'], 'colored' => 1, }, { 'descr' => 'unified', 'opts' => ['-u'], 'colored' => 0, }, { 'descr' => 'context', 'opts' => ['-c'], 'colored' => 0, }, { 'descr' => 'side by side', # width=168 should be enough to support 80 character line lengths 'opts' => ['--side-by-side', '--width=168'], 'colored' => 0, }, ); @LOGSORTKEYS = qw(cvs date rev); @LOGSORTKEYS{@LOGSORTKEYS} = ( { descr => 'Not sorted', }, { descr => 'Commit date', }, { descr => 'Revision', }, ); ##### End of configuration parameters ##### my $pathinfo = ''; if (defined($ENV{PATH_INFO}) && $ENV{PATH_INFO} ne '') { ($pathinfo) = ($ENV{PATH_INFO} =~ VALID_PATH) or fatal('500 Internal Error', 'Illegal PATH_INFO in environment: %s', $ENV{PATH_INFO}); } if ($ENV{SCRIPT_NAME}) { ($scriptname) = ($ENV{SCRIPT_NAME} =~ VALID_PATH) or fatal('500 Internal Error', 'Illegal SCRIPT_NAME in environment: %s', $ENV{SCRIPT_NAME}); } $scriptname = '' unless defined($scriptname); $where = $pathinfo; $doCheckout = $where =~ s|^/$CheckoutMagic/|/|o; $where =~ s|^/||; $scriptname =~ s|^/*|/|; # Let's workaround thttpd's stupidity.. if ($scriptname =~ m|/$|) { $pathinfo .= '/'; my $re = quotemeta $pathinfo; $scriptname =~ s/$re$//; } # $scriptname : the URI escaped path to this script # $where : the path in the CVS repository (without leading /, or only /) # $scriptwhere: the URI escaped $scriptname + '/' + $where $scriptname = uri_escape_path($scriptname); $scriptwhere = join('/', $scriptname, uri_escape_path($where)); $where = '/' if ($where eq ''); # In text-based browsers, it's very annoying to have two links per file; # skip linking the image for them. $Browser = $ENV{HTTP_USER_AGENT} || ''; $is_links = ($Browser =~ m`^E?Links `); $is_lynx = ($Browser =~ m`^Lynx/`i); $is_w3m = ($Browser =~ m`^w3m/`i); $is_msie = ($Browser =~ m`MSIE`); $is_mozilla3 = ($Browser =~ m`^Mozilla/[3-9]`); $is_textbased = ($is_links || $is_lynx || $is_w3m); $nofilelinks = $is_textbased; # newer browsers accept gzip content encoding # and state this in a header # (netscape did always but didn't state it) # It has been reported that these # braindamaged MS-Internet Exploders claim that they # accept gzip .. but don't in fact and # display garbage then :-/ # Turn off gzip if running under mod_perl and no zlib is available, # piping does not work as expected inside the server. $maycompress = ( ((defined($ENV{HTTP_ACCEPT_ENCODING}) && $ENV{HTTP_ACCEPT_ENCODING} =~ /gzip/) || $is_mozilla3) && !$is_msie && !(defined($ENV{MOD_PERL}) && !HAS_ZLIB) ); # Parameters that will be sticky in all constructed links/query strings. @stickyvars = qw(cvsroot hideattic ignorecase sortby logsort f only_with_tag ln hidecvsroot hidenonreadable); # # Load configuration. # if (-f $config) { do "$config" or config_error($config, $@); } else { fatal("500 Internal Error", 'Configuration not found. Set the parameter $config in cvsweb.cgi to your cvsweb.conf configuration file first.'); } # Try to find a readable dir where we can cd into. Some abs_path() # implementations as well as various cvs operations require such a dir to # work properly. { local $^W = 0; for my $dir (tmpdir(), rootdir()) { last if (-r $dir && chdir($dir)); } } $CSS = $cssurl ? sprintf("\n", htmlquote($cssurl)) : ''; # --- input parameters my %query = (); if (defined($ENV{QUERY_STRING})) { for my $p (split(/[;&]+/, $ENV{QUERY_STRING})) { next unless $p; $p =~ y/+/ /; my ($key, $val) = split(/=/, $p, 2); next unless defined($key); $val = 1 unless defined($val); ($key = uri_unescape($key)) =~ /[[:graph:]]/ or next; ($val = uri_unescape($val)) =~ /[[:graph:]]/ or next; $query{$key} = $val; } } undef %input; my $t; for my $p (qw(graph hideattic hidecvsroot hidenonreadable ignorecase ln copt makeimage options tarball)) { $t = $query{$p}; if (defined($t)) { ($input{$p}) = ($t =~ /^([01]|on)$/) or fatal('500 Internal Error', 'Invalid boolean value: %s=%s', $p, $t); } } for my $p (qw(annotate r1 r2 rev tr1 tr2)) { $t = $query{$p}; if (defined($t)) { if (($p eq 'r1' || $p eq 'r2') && $t eq 'text') { # Special case for the "Use text field" option in the log view diff form. $input{$p} = $t; next; } elsif (($p eq 'rev' || $p eq 'annotate') && ($t eq '.' || $t eq 'HEAD')){ # Another special case, allow linking to latest revision using these. $input{$p} = '.'; next; } my ($rev, $tag) = split(/:/, $t, 2); ($input{$p}) = ($rev =~ /^(\d+(?:\.\d+)*)$/) or fatal('500 Internal Error', 'Invalid revision: %s=%s', $p, $t); if (defined($tag)) { ($tag) = ($tag =~ VALID_TAG1) or fatal('500 Internal Error', 'Invalid tag/branch name in revision: %s=%s', $p, $t); ($tag) = ($tag =~ VALID_TAG2) or fatal('500 Internal Error', 'Invalid tag/branch name in revision: %s=%s', $p, $t); $input{$p} .= ':' . $tag; } } } $t = defined($query{only_with_tag}) ? $query{only_with_tag} : $query{only_on_branch}; # Backwards compatibility. if (defined($t)) { ($input{only_with_tag}) = ($t =~ VALID_TAG1) or fatal('500 Internal Error', 'Invalid tag/branch name: %s', $t); ($input{only_with_tag}) = ($t =~ VALID_TAG2) or fatal('500 Internal Error', 'Invalid tag/branch name: %s', $t); } $t = $query{logsort}; if (defined($t)) { ($input{logsort}) = ($t =~ /^(cvs|date|rev)$/) or fatal('500 Internal Error', 'Unsupported log sort key: %s', $t); } $t = $query{f}; if (defined($t)) { ($input{f}) = ($t =~ /^(([hH]|[ucs]c?)|ext\d*)$/) or fatal('500 Internal Error', 'Unsupported diff format: %s', $t); } $t = $query{sortby}; if (defined($t)) { ($input{sortby}) = ($t =~ /^(file|date|rev|author|log)$/) or fatal('500 Internal Error', 'Unsupported dir sort key: %s', $t); } $t = $query{'content-type'}; if (defined($t)) { ($input{'content-type'}) = ($t =~ m|^([-0-9A-Za-z]+/[-0-9A-Za-z\.\+]+)$|) or fatal('500 Internal Error', 'Unsupported content type: %s', $t); } $t = $query{cvsroot}; if (defined($t)) { ($input{cvsroot}) = ($t =~ /^([[:print:]]+)$/) or fatal('500 Internal Error', 'Invalid symbolic CVS root name: %s', $t); } $t = $query{path}; if (defined($t)) { ($input{path}) = ($t =~ VALID_PATH) or fatal('500 Internal Error', 'Invalid path: %s', $t); } undef($t); undef(%query); # --- end input parameters # # CVS roots # my $rootfound = 0; for (my $i = 0; $i < scalar(@CVSrepositories); $i += 2) { my $key = $CVSrepositories[$i]; my ($descr, $root) = @{$CVSrepositories[$i+1]}; $root = canonpath($root); unless (-d $root) { warn("Root '$root' defined in \@CVSrepositories is not a directory, " . 'entry ignored'); next; } $rootfound ||= 1; $cvstreedefault = $key unless defined($cvstreedefault); $CVSROOTdescr{$key} = $descr; $CVSROOT{$key} = $root; push(@CVSROOT, $key); } unless ($rootfound) { fatal('500 Internal Error', 'No valid CVS roots found! See @CVSrepositories in ' . 'the configuration file (%s).', $config); } undef $rootfound; # # Default CVS root # if (!defined($CVSROOT{$cvstreedefault})) { fatal("500 Internal Error", '$cvstreedefault points to a repository (%s) not ' . 'defined in @CVSrepositories in your configuration ' . 'file (%s).', $cvstreedefault, $config); } $DEFAULTVALUE{cvsroot} = $cvstreedefault; while (my ($key, $defval) = each %DEFAULTVALUE) { # Replace not given parameters with defaults. next unless (defined($defval) && $defval =~ /\S/ && !defined($input{$key})); # Empty checkboxes in forms return nothing, so we define a helper parameter # in these forms (copt) which indicates that we just set parameters with a # checkbox. if ($input{copt}) { # 'copt' is set -> the result of empty input checkbox # -> set to zero (disable) if default is a boolean (0|1). $input{$key} = 0 if ($defval eq '0' || $defval eq '1'); } else { # 'copt' isn't set --> empty input is not the result # of empty input checkbox --> set default. $input{$key} = $defval; } } $barequery = ""; my @barequery; foreach (@stickyvars) { # construct a query string with the sticky non default parameters set if (defined($input{$_}) && !(defined($DEFAULTVALUE{$_}) && $input{$_} eq $DEFAULTVALUE{$_})) { push(@barequery, join('=', uri_escape($_), uri_escape($input{$_}))); } } if ($allow_enscript) { push(@DIFFTYPES, qw(uc cc sc)); @DIFFTYPES{qw(uc cc sc)} = ( { 'descr' => 'unified, colored', 'opts' => ['-u'], 'colored' => 0, }, { 'descr' => 'context, colored', 'opts' => ['-c'], 'colored' => 0, }, { 'descr' => 'side by side, colored', # width=168 should be enough to support 80 character line lengths 'opts' => ['--side-by-side', '--width=168'], 'colored' => 0, }, ); } else { # No Enscript -> respect difftype, but don't offer colorization. if ($input{f} && $input{f} =~ /^([ucs])c$/) { $input{f} = $1; } } # is there any query ? if (@barequery) { $barequery = join (';', @barequery); $query = "?$barequery"; $barequery = ";$barequery"; } else { $query = ""; } undef @barequery; if (defined($input{path})) { redirect("$scriptname/$input{path}$query"); } # get actual parameters { my $sortby = $input{sortby} || 'file'; $bydate = 0; $byrev = 0; $byauthor = 0; $bylog = 0; $byfile = 0; if ($sortby eq 'date') { $bydate = 1; } elsif ($sortby eq 'rev') { $byrev = 1; } elsif ($sortby eq 'author') { $byauthor = 1; } elsif ($sortby eq 'log') { $bylog = 1; } else { $byfile = 1; } } $defaultDiffType = $input{f}; $logsort = $input{logsort}; # alternate CVS-Tree, configured in cvsweb.conf if ($input{cvsroot} && $CVSROOT{$input{cvsroot}}) { $cvstree = $input{cvsroot}; } else { $cvstree = $cvstreedefault; } $cvsroot = $CVSROOT{$cvstree}; # create icons out of description foreach my $k (keys %ICONS) { my ($itxt, $ipath, $iwidth, $iheight) = @{$ICONS{$k}}; no strict 'refs'; if ($ipath) { ${"${k}icon"} = sprintf('%s', htmlquote($ipath), htmlquote($itxt), $iwidth, $iheight); } else { ${"${k}icon"} = $itxt; } } my $config_cvstree = "$config-$cvstree"; # Do some special configuration for cvstrees if (-f $config_cvstree) { do "$config_cvstree" or fatal("500 Internal Error", 'Error in loading configuration file: %s

%s
', $config_cvstree, $@); } undef $config_cvstree; $re_prcategories = '(?:' . join ('|', @prcategories) . ')' if @prcategories; $re_prkeyword = quotemeta($prkeyword) if defined($prkeyword); $prcgi .= '%s' if defined($prcgi) && $prcgi !~ /%s/; $fullname = catfile($cvsroot, $where); my $rewrite = 0; if ($pathinfo =~ m|//|) { $pathinfo =~ y|/|/|s; $rewrite = 1; } if (-d $fullname) { if ($pathinfo !~ m|/$|) { $pathinfo .= '/'; $rewrite = 1; } } elsif ($pathinfo =~ m|/$|) { chop $pathinfo; $rewrite = 1; } if ($rewrite) { redirect($scriptname . uri_escape_path($pathinfo) . $query, 1); } undef $rewrite; undef $pathinfo; if (!-d $cvsroot) { fatal("500 Internal Error", '$CVSROOT not found!

The server on which the CVS tree lives is probably down. Please try again in a few minutes.'); } # # Short-circuit forbidden things. Note that $fullname should not change # after this, because the rest of the code assumes this check has already # been done. # fatal('403 Forbidden', 'Access to %s forbidden.', $where) if forbidden($fullname); # # Handle tarball downloads before any headers are output. # if ($input{tarball}) { fatal('403 Forbidden', 'Downloading tarballs is prohibited.') unless $allow_tar; my ($module) = ($where =~ m,^/?(.*),); # untaint $module =~ s,/([^/]*)$,,; my ($ext) = ($1 =~ /(\.t(?:ar\.)?gz|\.zip)$/); my ($basedir) = ($module =~ m,([^/]+)$,); if ($basedir eq '' || $module eq '') { fatal('500 Internal Error', 'You cannot download the top level directory.'); } my $istar = ($ext eq '.tar.gz' || $ext eq '.tgz'); if ($istar) { fatal('500 Internal Error', 'tar command not found.') unless $CMD{tar}; fatal('500 Internal Error', 'gzip command not found.') unless $CMD{gzip}; } my $iszip = ($ext eq '.zip'); if ($iszip && !$CMD{zip}) { fatal('500 Internal Error', 'zip command not found.'); } if (!$istar && !$iszip) { fatal('500 Internal Error', 'Unsupported archive type.'); } my $tmpexportdir; eval { local $SIG{__DIE__}; # Don't use the CLEANUP argument to tempdir() here, since we might be under # mod_perl (the process runs for a long time), unlink explicitly later. $tmpexportdir = tempdir('.cvsweb.XXXXXXXX', TMPDIR => 1); }; if ($@) { fatal('500 Internal Error', 'Unable to make temporary directory: %s', $@); } if (!chdir($tmpexportdir)) { fatal('500 Internal Error', "Can't cd to temporary directory %s: %s", $tmpexportdir, $!); } my @fatal; my $tag = $input{only_with_tag} || 'HEAD'; $tag = 'HEAD' if ($tag eq 'MAIN'); my @cmd = ($CMD{cvs}, @cvs_options, '-Qd', $cvsroot, 'export', '-r', $tag, '-d', $basedir, $module); my $export_err; my ($errcode, $err) = runproc(\@cmd, '2>', \$export_err); if ($errcode) { @fatal = ('500 Internal Error', 'Export failure (exit status %s), output: 

%s
', $errcode, $err || $export_err); } else { $| = 1; # Essential to get the buffering right. local (*TAR_OUT); my (@cmd, $ctype); if ($istar) { my @tar = ($CMD{tar}, @tar_options, '-cf', '-', $basedir); my @gzip = ($CMD{gzip}, @gzip_options, '-c'); push(@cmd, \@tar, '|', \@gzip); $ctype = 'application/x-gzip'; } elsif ($iszip) { my @zip = ($CMD{zip}, @zip_options, '-r', '-', $basedir); push(@cmd, \@zip, \''); $ctype = 'application/zip'; } push(@cmd, '>pipe', \*TAR_OUT); my ($h, $err) = startproc(@cmd); if ($h) { print "Content-Type: $ctype\r\n\r\n"; local $/ = undef; print ; $h->finish(); } else { @fatal = ('500 Internal Error', '%s failure (exit status %s), output: 
%s
', $istar ? 'Tar' : 'Zip', $? >> 8 || -1, $err); } } # Clean up. rmtree($tmpexportdir); &fatal(@fatal) if @fatal; exit; } ############################## # View a directory ############################### if (-d $fullname) { my $dh = do { local (*DH); }; opendir($dh, $fullname) or fatal("404 Not Found", '%s: %s', $where, $!); my @dir = grep(!forbidden(catfile($fullname, $_)), readdir($dh)); closedir($dh); my @subLevelFiles = findLastModifiedSubdirs(@dir) if $show_subdir_lastmod; my @unreadable = getDirLogs($cvsroot, $where, @subLevelFiles); if ($where eq '/') { html_header($defaulttitle); $long_intro =~ s/!!CVSROOTdescr!!/$CVSROOTdescr{$cvstree}/g; print $long_intro; } else { html_header($where); my $html = (-f catfile($fullname, 'README.cvs.html,v') || -f catfile($fullname, 'Attic', 'README.cvs.html,v')); my $text = (!$html && (-f catfile($fullname, 'README.cvs,v') || -f catfile($fullname, 'Attic', 'README.cvs,v'))); if ($html || $text) { my $rev = $input{only_with_tag} || 'HEAD'; my $cr = abs_path($cvsroot) || $cvsroot; my $co = "$where/README.cvs.html" if $html; $co ||= "$where/README.cvs" if $text; # abs_path() taints when run as a CGI... if ($cr =~ VALID_PATH) { $cr = $1; } else { fatal('500 Internal Error', 'Illegal CVS root: %s', $cr); } my @cmd = ($CMD{cvs}, @cvs_options, '-d', $cr, 'co', '-p', "-r$rev",$co); local (*CVS_OUT, *CVS_ERR); my ($h, $err) = startproc(\@cmd, \"", '>pipe', \*CVS_OUT, '2>pipe', \*CVS_ERR); fatal('500 Internal Error', $err) unless $h; if ($html) { local $/ = undef; print ; } else { print "

\n"; while () { chomp; print htmlquote($_), '
'; } print "

"; } $h->finish(); } print $short_instruction; } if ($use_descriptions && open(DESC, catfile($cvsroot, 'CVSROOT', 'descriptions'))) { while () { chomp; my ($dir, $description) = /(\S+)\s+(.*)/; $descriptions{$dir} = $description; } close(DESC); } print "

\n"; # give direct access to dirs if ($where eq '/') { chooseMirror(); chooseCVSRoot(); } else { print '

Current directory: ', clickablePath($where, 0), ''; if ($cvshistory_url) { (my $d = $where) =~ s|^/*(.*?)/*$|$1|; print ' - ', history_link($d, ''); } print "

\n"; print "

Current tag: ", htmlquote($input{only_with_tag}), "

\n" if $input{only_with_tag}; } print "
\n"; my $infocols = 1; printf(< EOF printf('', ($byfile ? ' class="sorted"' : '')); if ($byfile) { print 'File'; } else { print &link('File', sprintf('./%s#dirlist', toggleQuery('sortby', 'file'))); } print "\n"; # Do not display the other column headers if we do not have any files # with revision information. if (scalar(%fileinfo)) { $infocols++; printf('', ($byrev ? ' class="sorted"' : '')); if ($byrev) { print 'Rev.'; } else { print &link('Rev.', sprintf('./%s#dirlist', toggleQuery('sortby', 'rev'))); } print "\n"; $infocols++; printf('', ($bydate ? ' class="sorted"' : '')); if ($bydate) { print 'Age'; } else { print &link('Age', sprintf('./%s#dirlist', toggleQuery('sortby', 'date'))); } print "\n"; if ($show_author) { $infocols++; printf('', ($byauthor ? ' class="sorted"' : '')); if ($byauthor) { print 'Author'; } else { print &link('Author', sprintf('./%s#dirlist', toggleQuery('sortby', 'author'))); } print "\n"; } $infocols++; printf('', ($bylog ? ' class="sorted"' : '')); if ($bylog) { print 'Last log entry'; } else { print &link('Last log entry', sprintf('./%s#dirlist', toggleQuery('sortby', 'log'))); } print "\n"; } elsif ($use_descriptions) { print "Description\n"; $infocols++; } print "\n"; my $dirrow = 0; my $i; lookingforattic: for ($i = 0; $i <= $#dir; $i++) { if ($dir[$i] eq "Attic") { last lookingforattic; } } if (!$input{hideattic} && ($i <= $#dir) && opendir($dh, $fullname . '/Attic')) { splice(@dir, $i, 1, grep((s|^|Attic/|, !m|/\.|), readdir($dh))); closedir($dh); } my $hideAtticToggleLink = $input{hideattic} ? '' : &link('[hide]', sprintf('./%s#dirlist', &toggleQuery('hideattic'))); # Sort without the Attic/ pathname. # place directories first my $filesexists; my $filesfound; foreach my $file (sort { &fileSortCmp } @dir) { next if ($file eq curdir()); # ignore CVS lock and stale NFS files next if ($file =~ /^\#cvs\.|^,|^\.nfs/); # \# for XEmacs cperl-mode... # Check whether to show the CVSROOT path next if ($input{hidecvsroot} && $where eq '/' && $file eq 'CVSROOT'); # Is it a directory? my $isdir = -d catdir($fullname, $file); # Ignore non-readable files and directories? next if ($input{hidenonreadable} && (! -r _ || ($isdir && ! -x _))); my $attic = ''; if ($file =~ s|^Attic/||) { $attic = ' (in the Attic) ' . $hideAtticToggleLink . ''; } if ($file eq updir() || $isdir) { next if ($file eq updir() && $where eq '/'); my ($rev, $date, $log, $author, $filename, $keywordsubst) = @{$fileinfo{$file}} if (defined($fileinfo{$file})); printf "\n", ($dirrow % 2) ? 'even' : 'odd'; if ($file eq updir()) { my $url = "../$query"; print $nofilelinks ? $backicon : &link($backicon, $url); print ' ', &link("Parent Directory", $url); } else { my $url = './' . uri_escape_path($file) . "/$query"; print ''; print $nofilelinks ? $diricon : &link($diricon, $url); print ' ', &link(htmlquote("$file/"), $url), $attic; if ($file eq "Attic") { print ' ', &link('[show]', sprintf('./%s#dirlist', &toggleQuery('hideattic'))), ''; } } # Show last change in dir if ($filename) { print "\n \n"; print readableTime(time() - $date, 0) if $date; print "\n", htmlquote($author) if $show_author; print "\n"; $filename =~ s%^[^/]+/%%; print &link(htmlquote("$filename/$rev"), sprintf('%s/%s%s#rev%s', uri_escape($file), uri_escape($filename), $query, $rev)), '
'; if ($log) { print htmlify(substr($log, 0, $shortLogLen), $allow_dir_extra); print '...' if (length($log) > 80); } } else { my $dwhere = ($where ne '/' ? $where : '') . $file; if ($use_descriptions && defined $descriptions{$dwhere}) { print ''; print $descriptions{$dwhere}; } elsif ($infocols > 1) { # close the row with the appropriate number of # columns, so that the vertical seperators are visible my ($cols) = $infocols; while ($cols > 1) { print "\n "; $cols--; } } } print "\n\n"; $dirrow++; } elsif ($file =~ s/,v$//) { my $fileurl = ($attic ? 'Attic/' : '') . uri_escape_path($file); my $url = './' . $fileurl . $query; $filesexists++; next if (!defined($fileinfo{$file})); my ($rev, $date, $log, $author, $filename, $keywordsubst) = @{$fileinfo{$file}}; my $isbinary = $keywordsubst eq 'b' ? 1 : 0; $filesfound++; printf "\n", ($dirrow % 2) ? 'even' : 'odd'; printf '', $allow_cvsgraph ? '' : ' colspan="2"'; my $icon = $isbinary ? $binfileicon : $fileicon; print $nofilelinks ? $icon : &link($icon, $url); print ' ', &link(htmlquote($file), $url), $attic; print '', graph_link($fileurl) if $allow_cvsgraph; print "\n", display_link($fileurl, $rev); print "\n"; print readableTime(time() - $date, 0) if $date; print "\n", htmlquote($author) if $show_author; print "\n"; if ($log) { print htmlify(substr($log, 0, $shortLogLen), $allow_dir_extra); print '...' if (length $log > 80); } print "\n"; $dirrow++; } print "\n"; } print "\n"; if ((my $num = scalar(@unreadable)) && ! $input{hidenonreadable}) { printf(< NOTE: The following %d unreadable files were ignored:
%s

EOF } if ($filesexists && !$filesfound) { my $currtag = defined($input{only_with_tag}) ? sprintf(' (%s)', htmlquote($input{only_with_tag})) : ''; printf(< NOTE: There are %d files, but none matches the current tag%s.

EOF } if ($input{only_with_tag} && (!%tags || !$tags{$input{only_with_tag}})) { %tags = %alltags; } if (scalar %tags || $input{only_with_tag} || $edit_option_form || defined($input{options})) { print "
\n"; } if (scalar %tags || $input{only_with_tag}) { print "
\n

\n"; foreach my $var (@stickyvars) { printf("\n", htmlquote($input{$var})) if (defined($input{$var}) && (!defined($DEFAULTVALUE{$var}) || $input{$var} ne $DEFAULTVALUE{$var}) && $var ne 'only_with_tag'); } printf(<

EOF } if ($allow_tar && $filesfound) { my ($basefile) = ($where =~ m,(?:.*/)?([^/]+),); my $havetar = $CMD{tar} && $CMD{gzip}; my $havezip = $CMD{zip}; if (defined($basefile) && $basefile ne '' && ($havetar || $havezip)) { my $q = ($query ? "$query;" : '?') . 'tarball=1'; print "
\n", '
Download this directory in '; # Mangle the filename so browsers show a reasonable filename to download. my @types = (); $basefile = uri_escape($basefile); push(@types, &link('tarball', "$basefile.tar.gz$q")) if $havetar; push(@types, &link('zip archive', "$basefile.zip$q")) if $havezip; print join(' or ', @types), "
\n"; } } if ($edit_option_form || defined($input{options})) { print <
General options EOF for my $v qw(hidecvsroot hidenonreadable) { printf(qq{\n}, $v, $input{$v} || 0); } if ($cvstree ne $cvstreedefault) { print "\n"; } print < \n"; print < EOF print ''; print < EOF printLogSortSelect(0); print < EOF print '\n"; print < EOF printDiffSelect(0); print <
EOF } html_footer(); } ############################### # View Files ############################### elsif (-f $fullname . ',v') { if (defined($input{rev}) || $doCheckout) { &doCheckout($fullname, $input{rev}, $input{only_with_tag}); gzipclose(); exit; } if (defined($input{annotate}) && $allow_annotate) { &doAnnotate($input{annotate}, $input{only_with_tag}); gzipclose(); exit; } if (defined($input{r1}) && defined($input{r2})) { &doDiff($fullname, $input{r1}, $input{tr1}, $input{r2}, $input{tr2}, $input{f}); gzipclose(); exit; } if ($allow_cvsgraph && $input{graph}) { if ($input{makeimage}) { doGraph(); } else { doGraphView(); } gzipclose(); exit; } &doLog($fullname); } ############################## # View Diff ############################## elsif ($fullname =~ s/\.diff$// && -f $fullname . ',v' && $input{r1} && $input{r2}) { # $where-diff-removal if 'cvs rdiff' is used # .. but 'cvs rdiff'doesn't support some options # rcsdiff does (-w and -p), so it is disabled # $where =~ s/\.diff$//; # Allow diffs using the ".diff" extension so that browsers that default # to the filename in the URL when saving don't save diffs as eg. foo.c. &doDiff($fullname, $input{r1}, $input{tr1}, $input{r2}, $input{tr2}, $input{f}); gzipclose(); exit; } elsif (do { (my $tmp = $fullname) =~ s|/([^/]+)$|/Attic/$1|; -f "$tmp,v" }) { # The file has been removed and is in the Attic. # Send a redirect pointing to the file in the Attic. (my $newplace = $scriptwhere) =~ s|/([^/]+)$|/Attic/$1|; if ($ENV{QUERY_STRING} ne "") { redirect("$newplace?$ENV{QUERY_STRING}"); } else { redirect($newplace); } exit; } elsif (0 && (my @files = &safeglob($fullname . ",v"))) { http_header("text/plain"); print "You matched the following files:\n"; print join ("\n", @files); # TODO: # Find the tags from each file # Display a form offering diffs between said tags } else { # Assume it's a module name with a potential path following it. my $module; my $xtra = (($module = $where) =~ s|(/.*)||) ? $1 : ''; # Is there an indexed version of modules? my $fh = do { local (*FH); }; if (open($fh, catfile($cvsroot, 'CVSROOT', 'modules'))) { while (<$fh>) { if (/^(\S+)\s+(\S+)/o && $module eq $1 && $module ne $2 && -d "$cvsroot/$2") { close($fh); redirect("$scriptname/$2$xtra$query"); } } close($fh); } fatal("404 Not Found", '%s: no such file or directory', $where); } gzipclose(); ## End MAIN sub printDiffSelect($) { my ($use_java_script) = @_; print '"; } sub printDiffSelectStickyVars() { while (my ($key, $val) = each %input) { next if ($key eq 'f'); next if (defined($DEFAULTVALUE{$key}) && $DEFAULTVALUE{$key} eq $val); print "\n"; } } sub printLogSortSelect($) { my ($use_java_script) = @_; print '"; } # # Find the last modified, version controlled files in the given directories. # Compares solely based on modification timestamps. Files in the returned list # are without the ,v suffix, and unreadable files have been filtered out. # sub findLastModifiedSubdirs(@) { my (@dirs) = @_; my @files; foreach my $dirname (@dirs) { next if ($dirname eq curdir() || $dirname eq updir()); my $dir = catdir($fullname, $dirname); next if (!-d $dir); my $dh = do { local (*DH); }; opendir($dh, $dir) or next; my (@filenames) = grep(!forbidden(catfile($dir, $_)), readdir($dh)); closedir($dh); my $lastmod = undef; my $lastmodtime = undef; foreach my $filename (@filenames) { ($filename) = (catfile($dirname, $filename) =~ VALID_PATH) or next; # untaint my ($file) = catfile($fullname, $filename); next if ($filename !~ /,v$/o || !-f $file || !-r _); my $modtime = -M _; if (!defined($lastmod) || $modtime < $lastmodtime) { ($lastmod = $filename) =~ s/,v$//; $lastmodtime = $modtime; } } push(@files, $lastmod) if (defined($lastmod)); } return @files; } sub htmlify_sub(&$) { (my $proc, local $_) = @_; my @a = split(m|(]+>[^<]*)|i); my $linked; my $result = ''; while (($_, $linked) = splice(@a, 0, 2)) { &$proc(); $result .= $_ if defined($_); $result .= $linked if defined($linked); } return $result; } sub htmlify($;$) { (local $_, my $extra) = @_; $_ = htmlquote($_); # get URL's as link s{ ((https?|ftp)://.+?)([\s\']|&(quot|[lg]t);) }{ &link($1, htmlunquote($1)) . $3 }egx; if ($allow_mailtos) { # Make mailto: links from email addresses. $_ = htmlify_sub { s< ([\w+=\-.!]+@[\w\-]+(?:\.[\w\-]+)+) >< &link($1, "mailto:$1") >egix; } $_; } if ($extra) { # get PR #'s as link: "PR#nnnn" "PR: nnnn, ..." "PR nnnn, ..." "bin/nnnn" if (defined($prcgi) && defined($re_prkeyword)) { my $prev; do { $prev = $_; $_ = htmlify_sub { s{ (\b$re_prkeyword[:\#]?\s* (?: \#? \d+[,\s]\s* )* \#?) (\d+)\b }{ $1 . &link($2, sprintf($prcgi, $2)) }egix; } $_; } while ($_ ne $prev); if (defined($re_prcategories)) { $_ = htmlify_sub { s{ (\b$re_prcategories/(\d+)\b) }{ &link($1, sprintf($prcgi, $2)) }egox; } $_; } } # get manpage specs as link: "foo.1" "foo(1)" if (defined($mancgi)) { $_ = htmlify_sub { s{ ( \b ( \w[\w+\-.]* (?: ::\w[\w+\-.]*)* ) (?: \( ([0-9n]) \) \B | \. ([0-9n]) \b ) ) }{ my($text, $name, $section) = ($1, $2, defined($3) ? $3 : $4); ($name =~ /[A-Za-z]/ && $name !~ /\.(:|$)/) ? &link($text, sprintf($mancgi, $section, uri_escape($name))) : $text; }egx; } $_; } } return $_; } sub spacedHtmlText($;$) { (local $_, my $ts) = @_; return '' unless defined($_); $ts ||= $tabstop || 8; # Expand tabs 1 while s/(.*?)(\t+)/$1 . ' ' x (length($2) * $ts - length($1) % $ts)/e; if ($hr_breakable) { s/^ /\001nbsp;/; # protect leading and... s/ $/\001nbsp;/; # ...trailing whitespace (mostly for String::Ediff), s/ / \001nbsp;/g; # ...and leave every other space 'breakable' } else { s/ /\001nbsp;/g; } $_ = htmlify($_, $allow_source_extra); # unescape y/\001/&/; return $_; } # Note that this doesn't htmlquote the first argument... sub link($$) { my ($name, $url) = @_; return sprintf('%s', htmlquote($url), $name); } sub revcmp($$) { my ($rev1, $rev2) = @_; # make no comparison for a tag or a branch return 0 if $rev1 =~ /[^\d.]/ || $rev2 =~ /[^\d.]/; my (@r1) = split(/\./, $rev1); my (@r2) = split(/\./, $rev2); my ($a, $b); while (($a = shift(@r1)) && ($b = shift(@r2))) { return $a <=> $b unless ($a == $b); } if (@r1) { return 1; } if (@r2) { return -1; } return 0; } # # Signal a fatal error. # sub fatal($$@) { my ($errcode, $format, @args) = @_; print "Status: $errcode\r\n"; html_header('Error'); print '
Error: ', sprintf($format, map(htmlquote($_), @args)), "
\n"; html_footer(); exit(1); } # # Signal a (fatal) configuration error. # sub config_error($$) { fatal('500 Internal Error', 'Error loading configuration file "%s":

' . '%s
', @_); } # # Sends a redirect to the given URL. # sub redirect($;$) { my ($url, $permanent) = @_; my ($status, $text); if ($permanent) { $status = '301'; $text = 'Moved Permanently'; } else { $status = '302'; $text = 'Found'; } print "Status: $status $text\r\n", "Location: $url\r\n"; html_header($text); print "

This document has moved ", &link('here', $url), ".

\n"; html_footer(); exit(1); } sub safeglob($) { my ($filename) = @_; (my $dirname = $filename) =~ s|/[^/]+$||; $filename =~ s|.*/||; my @results; my $dh = do { local (*DH); }; if (opendir($dh, $dirname)) { my $glob = $filename; my $t; # transform filename from glob to regex. Deal with: # [, {, ?, * as glob chars # make sure to escape all other regex chars $glob =~ s/([\.\(\)\|\+])/\\$1/g; $glob =~ s/\*/.*/g; $glob =~ s/\?/./g; $glob =~ s/{([^}]+)}/($t = $1) =~ s-,-|-g; "($t)"/eg; $glob = qr/^$glob$/; foreach (readdir($dh)) { if ($_ =~ $glob && $_ =~ VALID_PATH) { push(@results, catfile($dirname, $1)); # untaint } } closedir($dh); } return @results; } # # Searches @command_path for the given executable file. # sub search_path($) { my ($command) = @_; for my $d (@command_path) { my $cmd = catfile($d, $command); return $cmd if (-x $cmd && !-d _); } return ''; } # # Gets the enscript(1) highlight mode corresponding to the given filename, # or undef if unsupported. # sub getEnscriptHL($) { return undef unless $allow_enscript; my ($filename) = @_; while (my ($hl, $regex) = each %enscript_types) { return $hl if ($filename =~ $regex); } return undef; } # # Gets the MIME type for the given file name. # sub getMimeType($;$) { my ($fullname, $binary) = @_; $binary = ($keywordsubstitution && $keywordsubstitution =~ /b/) unless defined($binary); (my $suffix = $fullname) =~ s/^.*\.([^.]*)$/$1/; my $mimetype = $MTYPES{$suffix}; $mimetype ||= $MimeTypes->mimeTypeOf($fullname) if defined($MimeTypes); if (!$mimetype && $suffix ne '*' && -f $mime_types && -r _) { my $fh = do { local (*FH); }; if (open($fh, $mime_types)) { my $re = sprintf('^\s*(\S+\/\S+)\s.+\b%s\b', quotemeta($suffix)); $re = qr/$re/; while (my $line = <$fh>) { if ($line =~ $re) { $mimetype = $1; $MTYPES{$suffix} = $mimetype; last; } } close($fh); } else { warn("Can't open MIME types file $mime_types for reading: $!"); } } $mimetype ||= $MTYPES{'*'}; $mimetype ||= $binary ? 'application/octet-stream' : 'text/plain'; return $mimetype; } ############################### # read first lines like head(1) ############################### sub head($;$) { my ($fh, $linecount) = @_; $linecount ||= 10; my @buf; if ($linecount > 0) { for (my $i = 0; !eof($fh) && $i < $linecount; $i++) { push @buf, scalar <$fh>; } } else { @buf = <$fh>; } return @buf; } ############################### # scan vim and Emacs directives ############################### sub scan_directives(@) { my $ts = undef; for (@_) { $ts = $1 if /\b(?:ts|tabstop|tab-width)[:=]\s*([1-9]\d*)\b/; } ('tabstop' => $ts); } sub openOutputFilter() { return unless $output_filter; open(STDOUT, "|-") and return; # child of child open(STDERR, '>', devnull()) unless $DEBUG; exec($output_filter) or exit -1; } ############################### # show Annotation ############################### sub doAnnotate($$) { my ($rev, $tag) = @_; $rev = $tag || 'HEAD' if ($rev eq '.'); (my $pathname = $where) =~ s|((?<=/)Attic/)?[^/]*$||; (my $filename = $where) =~ s|^.*/||; # This annotate version is based on the cvs annotate-demo Perl script by # Cyclic Software. It was written by Cyclic Software, # http://www.cyclic.com/, and is in the public domain. # We could abandon the use of rlog, rcsdiff and co using # the cvs server in a similiar way one day (..after rewrite). local (*CVS_IN, *CVS_OUT); my $annotate_err; my ($h, $err) = startproc([ $CMD{cvs}, @annotate_options, 'server' ], 'pipe', \*CVS_OUT, '2>', \$annotate_err); fatal('500 Internal Error', 'Annotate failure (exit status %s), output: 
%s
', $? >> 8 || -1, $err) unless $h; # OK, first send the request to the server. A simplified example is: # Root /home/kingdon/zwork/cvsroot # Argument foo/xx # Directory foo # /home/kingdon/zwork/cvsroot/foo # Directory . # /home/kingdon/zwork/cvsroot # annotate # although as you can see there are a few more details. print CVS_IN "Root $cvsroot\n"; print CVS_IN "Valid-responses ok error Valid-requests Checked-in Updated Merged Removed M E\n"; # Don't worry about sending valid-requests, the server just needs to # support "annotate" and if it doesn't, there isn't anything to be done. print CVS_IN "UseUnchanged\n"; print CVS_IN "Argument -r\n"; print CVS_IN "Argument $rev\n"; print CVS_IN "Argument $where\n"; # The protocol requires us to fully fake a working directory (at # least to the point of including the directories down to the one # containing the file in question). # So if $where is "dir/sdir/file", then dirs will be ("dir","sdir","file") my $path = ''; foreach my $dir (split('/', $where)) { if ($path eq "") { # In our example, $dir is "dir". $path = $dir; } else { print CVS_IN "Directory $path\n"; print CVS_IN "$cvsroot/$path\n"; # In our example, $_ is "sdir" and $path becomes "dir/sdir" # And the next time, "file" and "dir/sdir/file" (which then gets # ignored, because we don't need to send Directory for the file). $path .= "/$dir"; } } undef $path; # And the last "Directory" before "annotate" is the top level. print CVS_IN "Directory .\n"; print CVS_IN "$cvsroot\n"; print CVS_IN "annotate\n"; # OK, we've sent our command to the server. Thing to do is to # close the writer side and get all the responses. if (!close(CVS_IN)) { $h->finish(); fatal('500 Internal Error', 'Annotate failure (exit status %s): %s, output: ' . '
%s
', $? >> 8, $!, $annotate_err); } navigateHeader($scriptwhere, $pathname, $filename, $rev, 'annotate'); my $revtype = ($rev =~ /\./) ? 'revision' : 'tag'; # TODO: tag -> branch/tag? print '

Annotation of ', htmlquote("$pathname$filename"), ", $revtype $rev

\n"; # Ready to get the responses from the server. # For example: # E Annotations for foo/xx # E *************** # M 1.3 (kingdon 06-Sep-97): hello # ok my ($lineNr) = 0; my ($oldLrev, $oldLusr) = ("", ""); my ($revprint, $usrprint); if ($annTable) { print < EOF } else { print "
";
  }

  # prefetch several lines
  my @buf = head(*CVS_OUT);

  my %d = scan_directives(@buf);

  while (@buf || !eof(*CVS_OUT)) {

    $_ = @buf ? shift @buf : ;
    my @words = split;

    # Adding one is for the (single) space which follows $words[0].
    my $rest = substr($_, length($words[0]) + 1);
    if ($words[0] eq "E") {
      next;
    } elsif ($words[0] eq "M") {
      $lineNr++;
      (my $lrev = substr($_, 2,  13)) =~ y/ //d;
      (my $lusr = substr($_, 16, 9))  =~ y/ //d;
      my $line = substr($_, 36);
      # TODO: this does not work for branch/tag revisions.
      my $isCurrentRev = ($rev eq $lrev);

      # we should parse the date here ..
      if ($lrev eq $oldLrev) {
        $revprint = sprintf('%-8s', '');
      } else {
        $revprint = sprintf('%-8s', $lrev);
        $revprint =~ s|(\S+)|&link($1, uri_escape($filename)."$query#rev$1")|e;
        $oldLusr = '';
      }

      $usrprint = ($lusr eq $oldLusr) ? '' : $lusr;
      $oldLrev = $lrev;
      $oldLusr = $lusr;

      print $is_textbased ? '' : ''
        if $isCurrentRev;

      $usrprint = sprintf('%-8s', $usrprint);
      printf '%s%s %s %4d:', $revprint, $isCurrentRev ? '!' : ' ',
        htmlquote($usrprint), $lineNr;
      print spacedHtmlText($line, $d{tabstop});

      print $is_textbased ? '' : '' if $isCurrentRev;

    } elsif ($words[0] eq "ok") {
      # We could complain about any text received after this, like the
      # CVS command line client.  But for simplicity, we don't.

    } elsif ($words[0] eq "error") {
      fatal("500 Internal Error",
            'Error occured during annotate: %s', $_);
    }
  }
  $h->finish();

  if ($annTable) {
    print "";
  } else {
    print "
"; } html_footer(); } ############################### # make Checkout ############################### sub doCheckout($$$) { my ($fullname, $rev, $tag) = @_; $rev = $tag || undef if (!$rev || $rev eq '.'); # Start resolving whether we will do a markup view or not. my $do_markup = undef; my $want_type = $input{'content-type'}; # No markup if markup disallowed. $do_markup = 0 unless $allow_markup; # No markup if checkout magic cookie in URL. $do_markup = 0 if (!defined($do_markup) && $doCheckout); # Do markup if explicitly asked using cvsweb-markup content type. If the # asked content type is anything else, no markup. if (!defined($do_markup) && $want_type) { if ($want_type =~ CVSWEBMARKUP) { $want_type = undef; $do_markup = 1; } else { $do_markup = 0; } } # Ok, if $do_markup is still undefined, we know that a download has not been # explicitly asked. For the last check further down below we'll need to # know if the file is binary, and possibly run a log on it. my $needlog = $do_markup || $use_moddate; my $moddate = undef; my $revopt; if (defined($rev)) { $revopt = "-r$rev"; if ($needlog) { readLog($fullname, $rev); $moddate = $date{$rev}; # TODO: even this does not work for branch tags, but only normal tags :( $moddate ||= $date{$symrev{$rev}} if defined($symrev{$rev}); } } else { $revopt = "-rHEAD"; if ($needlog) { readLog($fullname); $moddate = $date{$symrev{HEAD}}; } } my $cr = abs_path($cvsroot) || $cvsroot; # abs_path() taints when run as a CGI... if ($cr =~ VALID_PATH) { $cr = $1; } else { fatal('500 Internal Error', 'Illegal CVS root: %s', $cr); } # Use abs_path() to work around a bug of cvs -p; expand symlinks if we can. my @cmd = ($CMD{cvs}, @cvs_options, '-d', $cr, 'co', '-p', $revopt, $where); local (*CVS_OUT, *CVS_ERR); my ($h, $err) = startproc(\@cmd, \"", '>pipe', \*CVS_OUT, '2>pipe', \*CVS_ERR); fatal('500 Internal Error', 'Checkout failure (exit status %s), output: 
%s
', $? >> 8 || -1, $err) unless $h; if (eof(CVS_ERR)) { $h->finish(); fatal("404 Not Found", '%s is not (any longer) pertinent', $where); } #=================================================================== #Checking out squid/src/ftp.c #RCS: /usr/src/CVS/squid/src/ftp.c,v #VERS: 1.1.1.28.6.2 #*************** # Parse CVS header my ($revision, $filename, $cvsheader); $filename = ""; while () { last if (/^\*\*\*\*/); $revision = $1 if (/^VERS: (.*)$/); if (/^Checking out (.*)$/) { ($filename = $1) =~ s|^\./+||; } $cvsheader .= $_; } close(CVS_ERR); if ($filename ne $where) { $h->finish(); fatal("500 Internal Error", 'Unexpected output from cvs co: 
%s
' . '(expected "%s" but got "%s")', $cvsheader, $where, $filename); } # Last checks whether we'll do markup or not. my $isbin = $keywordsubstitution && $keywordsubstitution =~ /b/; my $mimetype = getMimeType($fullname, $isbin); # If we still are not sure whether to do markup or not: # if the MIME type is "viewable" or this is not a binary file, do. $do_markup = !$isbin || viewable($mimetype) unless defined($do_markup); if ($do_markup) { # If this is something we'll be linking to in the markup view, we are # done with this particular output from "cvs co" and must discard it. my $linked = $mimetype =~ m{^image/|application/pdf$}i; if ($linked) { close(CVS_OUT); $h->finish(); } # Here we know the last modified date, but don't know if tags have been # added afterwards (those are shown in the markup view): no last-modified. cvswebMarkup(\*CVS_OUT, $fullname, $revision, $isbin, $mimetype, $needlog); $h->finish() unless $linked; } else { http_header($want_type || $mimetype, $moddate); local $/ = undef; print ; $h->finish(); } } sub cvswebMarkup($$$$$$;$) { my ($filehandle, $fullname, $rev, $isbin, $mimetype, $logged, $mod) = @_; (my $pathname = $where) =~ s|((?<=/)Attic/)?[^/]*$||; (my $filename = $where) =~ s|^.*/||; navigateHeader($scriptwhere, $pathname, $filename, $rev, 'view', $mod); print <
File:  EOF print &clickablePath($where, 1), "
\n"; if ($show_log_in_markup) { readLog($fullname) unless $logged; #,$rev); printLog($rev, $mimetype, $isbin); } else { print "Revision: $rev
\n"; print 'Tag: ', htmlquote($input{only_with_tag}), "
\n" if $input{only_with_tag}; } print "
\n
"; my $url = download_url(uri_escape($filename), $rev, $mimetype); if ($mimetype =~ m|^image/|i) { printf '%s
', $url . $barequery, htmlquote($filename); } elsif (lc($mimetype) eq 'application/pdf') { printf '
', $url . $barequery; } else { print "
\n";
    my $linenumbers = $input{ln} || 0;

    if (my $enscript_hl = getEnscriptHL($filename)) {
      doEnscript($filehandle, $enscript_hl, $linenumbers);

    } else {
      my $ln  = 0;
      my @buf = ();
      my $ts  = undef;

      if ($preformat_in_markup) {
        # prefetch several lines
        @buf = head($filehandle);
        my %d = scan_directives(@buf);
        $ts = $d{tabstop};
      }

      while (@buf || !eof($filehandle)) {
        $_ = @buf ? shift @buf : <$filehandle>;
        if ($linenumbers) {
          $ln++;
          printf '%5d: ', ($ln) x 2;
        }
        print $preformat_in_markup ? spacedHtmlText($_, $ts) : htmlquote($_);
      }
    }

    print "
\n"; } html_footer(); } sub viewable($) { return shift =~ m{^((text|image)/|application/pdf)}i; } ############################### # Show Colored Diff ############################### sub doDiff($$$$$$) { my ($fullname, $r1, $tr1, $r2, $tr2, $f) = @_; if (forbidden($fullname)) { fatal('403 Forbidden', 'Access to %s forbidden.', $where); } my ($rev1, $sym1); if ($r1 =~ /([^:]+)(:(.+))?/) { $rev1 = $1; $sym1 = $3; } if ($r1 eq 'text') { $rev1 = $tr1; $sym1 = ""; } my ($rev2, $sym2); if ($r2 =~ /([^:]+)(:(.+))?/) { $rev2 = $1; $sym2 = $3; } if ($r2 eq 'text') { $rev2 = $tr2; $sym2 = ""; } # # rev1 and rev2 are now both numeric revisions. # Thus we do a DWIM here and swap them if rev1 is after rev2. # XXX should we warn about the fact that we do this? if (&revcmp($rev1, $rev2) > 0) { my ($tmp1, $tmp2) = ($rev1, $sym1); ($rev1, $sym1) = ($rev2, $sym2); ($rev2, $sym2) = ($tmp1, $tmp2); } my $mimetype = getMimeType($fullname); # # Check for per-MIME type diff commands. # my $diffcmd = undef; if (my $diffcmds = $DIFF_COMMANDS{lc($mimetype)}) { if ($f =~ /^ext(\d*)$/) { my $n = $1 || 0; $diffcmd = $diffcmds->[$n]; } } if ($diffcmd && $diffcmd->{cmd} && $diffcmd->{name}) { if ($diffcmd->{args} && ref($diffcmd->{args}) ne 'ARRAY') { fatal('500 Internal Error', 'Configuration error: arguments to external diff tools must ' . 'be given as array refs. See "%s" in ' . '%%DIFF_COMMANDS.', $diffcmd->{name}); } (my $cvsname = $where) =~ s/\.diff$//; # Create two temporary files with the two revisions my $temp_fn1 = checkout_to_temp($cvsroot, $cvsname, $rev1); my $temp_fn2 = checkout_to_temp($cvsroot, $cvsname, $rev2); # Execute chosen diff binary. local (*DIFF_OUT); my @cmd = ($diffcmd->{cmd}); push(@cmd, @{$diffcmd->{args}}) if $diffcmd->{args}; push(@cmd, $temp_fn1, $temp_fn2); my ($h, $err) = startproc(\@cmd, \"", '>pipe', \*DIFF_OUT); if (!$h) { unlink($temp_fn1); unlink($temp_fn2); fatal('500 Internal Error', 'Diff failure (exit status %s), output: 
%s
', $? >> 8 || -1, $err); } http_header($diffcmd->{type} || 'text/plain'); local $/ = undef; print ; $h->finish(); unlink($temp_fn1); unlink($temp_fn2); exit; } # # Normal CVS diff. # $f = $DEFAULTVALUE{f} || 'u' if ($f =~ /^ext\d*$/); my $difftype = $DIFFTYPES{$f}; if (!$difftype) { fatal("400 Bad arguments", 'Diff format %s not understood', $f); } my @difftype = @{$difftype->{opts}}; my $human_readable = $difftype->{colored}; # Apply special diff options. -p and -F are not available with side by side # diffs and may cause problems with older (< 2.8) versions of diffutils if # used with --side-by-side. if ($showfunc && $f !~ /^s/) { push(@difftype, '-p'); while (my ($re1, $re2) = each %funcline_regexp) { if ($fullname =~ $re1) { push(@difftype, '-F', $re2); last; } } } if ($human_readable) { push(@difftype, '-w') if $hr_ignwhite; push(@difftype, '-kk') if $hr_ignkeysubst; } my $fh = do { local (*FH); }; if (!open($fh, "-|")) { # child open(STDERR, ">&STDOUT"); # Redirect stderr to stdout openOutputFilter(); exec($CMD{rcsdiff}, @rcsdiff_options, @difftype, "-r$rev1", "-r$rev2", $fullname) or exit -1; } if ($human_readable) { # # Human readable diff. # human_readable_diff($fh, $rev2); html_footer(); gzipclose(); exit; } elsif ($f =~ /^([ucs])c$/) { # # Enscript colored diff. # my $hl = 'diff'; $hl .= $1 if ($1 eq 'u' || $1 eq 's'); (my $where_nd = $where) =~ s/\.diff$//; (my $pathname = $where_nd) =~ s|((?<=/)Attic/)?[^/]*$||; (my $filename = $where_nd) =~ s|^.*/||; (my $swhere = $scriptwhere) =~ s|\.diff$||; navigateHeader($swhere, $pathname, $filename, $rev2, 'diff'); printf(<Diff for /%s between versions %s and %s 
EOF
    doEnscript(\$fh, $hl, 0, 'cvsweb_diff');
    print <




EOF
    printDiffSelectStickyVars();
    print 'Diff format: ';
    printDiffSelect($use_java_script);
    print "\n
\n";
    html_footer();
    gzipclose();
    exit;

  } else {
    #
    # Plain diff.
    #
    http_header("text/plain");
  }

  #
  #===================================================================
  #RCS file: /home/ncvs/src/sys/netinet/tcp_output.c,v
  #retrieving revision 1.16
  #retrieving revision 1.17
  #diff -c -r1.16 -r1.17
  #*** /home/ncvs/src/sys/netinet/tcp_output.c     1995/11/03 22:08:08     1.16
  #--- /home/ncvs/src/sys/netinet/tcp_output.c     1995/12/05 17:46:35     1.17
  #
  # Ideas:
  # - nuke the stderr output if it's what we expect it to be
  # - Add "no differences found" if the diff command supplied no output.
  #
  #*** src/sys/netinet/tcp_output.c     1995/11/03 22:08:08     1.16
  #--- src/sys/netinet/tcp_output.c     1995/12/05 17:46:35     1.17 RELENG_2_1_0
  # (bogus example, but...)
  #
  my ($f1, $f2);
  if (grep { $_ eq '-u' } @difftype) {
    $f1 = '---';
    $f2 = '\+\+\+';
  } else {
    $f1 = '\*\*\*';
    $f2 = '---';
  }

  while (<$fh>) {
    if (m|^$f1 $cvsroot|o) {
      s|$cvsroot/||o;
      if ($sym1) {
        chop;
        $_ .= " $sym1\n";
      }
    } elsif (m|^$f2 $cvsroot|o) {
      s|$cvsroot/||o;

      if ($sym2) {
        chop;
        $_ .= " $sym2\n";
      }
    }
    print $_;
  }
  close($fh);
}


###############################
# Show Logs ..
###############################
sub getDirLogs($$@)
{
  my ($cvsroot, $dirname, @otherFiles) = @_;
  my $tag = $input{only_with_tag};
  my $DirName = catdir($cvsroot, $where);

  my @files = &safeglob("$DirName/*,v");
  push (@files, &safeglob("$DirName/Attic/*,v")) unless $input{hideattic};
  foreach my $file (@otherFiles) {
    push(@files, catfile($DirName, $file));
  }

  # Weed out unreadable files.
  my $i = 0;
  my @unreadable = ();
  while ($i < scalar(@files)) {
    # Note: last modified files from subdirs returned by
    # findLastModifiedSubdirs() come without the ,v suffix so they're not
    # found here, but have already been checked for readability.  *cough*
    if (-r $files[$i] || !-e _) {
      $i++;
    } else {
      push(@unreadable, splice(@files, $i, 1));
    }
  }

  # If there are no files, we're done.
  return @unreadable unless @files;

  my @cmd = ($CMD{rlog});
  # Can't use -r as '-' is allowed in tagnames,
  # but misinterpreted by rlog.
  push(@cmd, '-r') unless defined($tag);

  my $fh = do { local (*FH); };
  if (!open($fh, '-|')) {                       # Child
    open(STDERR, '>', devnull()) unless $DEBUG; # Ignore rlog's complaints.
    openOutputFilter();
    if ($file_list_len && $file_list_len > 1) {
      while (scalar(@files) > $file_list_len) {  # Process files in chunks.
        system(@cmd, splice(@files, 0, $file_list_len)) == 0 or exit -1;
      }
    }
    exec(@cmd, @files) or exit -1;
  }
  undef @cmd;

  my $state = 'start';
  my ($date, $branchpoint, $branch, $log, @filetags);
  my ($rev, $revision, $revwanted, $filename, $head, $author, $keywordsubst);

  while (<$fh>) {
    if ($state eq "start") {

      #Next file. Initialize file variables
      $rev         = '';
      $revwanted   = '';
      $branch      = '';
      $branchpoint = '';
      $filename    = '';
      $log         = '';
      $revision    = '';
      %symrev      = ();
      @filetags    = ();
      $keywordsubst= '';

      #jump to head state
      $state = "head";
    }

    again:

    if ($state eq "head") {

      #$rcsfile = $1 if (/^RCS file: (.+)$/); #not used (yet)

      if (/^Working file: (.+)$/) {
        $filename = $1;
      } elsif (/^head: (.+)$/) {
        $head = $1;
      } elsif (/^branch: (.+)$/) {
        $branch = $1;
      } elsif (/^keyword substitution: (.+)$/) {
        $keywordsubst = $1;
      } elsif (/^symbolic names:/) {
        $state = "tags";
        ($branch = $head) =~ s/\.\d+$//
          if $branch eq '';
        $branch =~ s/(\d+)$/0.$1/;
        $symrev{MAIN}  = $branch;
        $symrev{HEAD}  = $branch;
        $alltags{MAIN} = 1;
        $alltags{HEAD} = 1;
        push (@filetags, "MAIN", "HEAD");
      } elsif ($_ =~ LOG_REVSEPR) {
        $state = "log";
        $rev   = '';
        $date  = '';
        $log   = '';

        # Try to reconstruct the relative filename if RCS spits out a full path
        $filename =~ s%^\Q$DirName\E/%%;
      }
      next;
    }

    if ($state eq "tags") {
      if (/^\s+([^:]+):\s+([\d\.]+)\s*$/) {
        push (@filetags, $1);
        $symrev{$1}  = $2;
        $alltags{$1} = 1;
        next;
      } elsif (/^\S/) {

        if (defined($tag)) {
          if (defined($symrev{$tag}) || $tag eq "HEAD") {
            $revwanted    = $symrev{$tag eq "HEAD" ? "MAIN" : $tag};
            ($branch      = $revwanted) =~ s/\b0\.//;
            ($branchpoint = $branch)    =~ s/\.?\d+$//;
            $revwanted    = '' if ($revwanted ne $branch);
          } elsif ($tag ne "HEAD") {
            $state = "skip";
            next;
          }
        }

        foreach my $tagfound (@filetags) {
          $tags{$tagfound} = 1;
        }
        $state = "head";
        goto again;
      }
    }

    if ($state eq "log") {
      if ($_ =~ LOG_REVSEPR || $_ =~ LOG_FILESEPR) {

        # End of a log entry.
        my $revbranch = $rev;
        $revbranch =~ s/\.\d+$//;

        if ($revwanted eq '' && $branch ne '' && $branch eq $revbranch
            || !defined($tag))
        {
          $revwanted = $rev;
        }

        if ($revwanted ne ''
            ? $rev eq $revwanted
            : $branchpoint ne ''
              ? $rev eq $branchpoint
              : 0
            && ($rev eq $head))
        {    # Don't think head is needed here..
          my @finfo = ($rev, $date, $log, $author, $filename, $keywordsubst);
          (my $name = $filename) =~ s%/.*%%;
          $fileinfo{$name} = [@finfo];
          $state = "done" if ($rev eq $revwanted);
        }
        $rev  = '';
        $date = '';
        $log  = '';
      } elsif ($date eq ''
               && m|^date:\s+(\d+)/(\d+)/(\d+)\s+(\d+):(\d+):(\d+);|)
      {
        my $yr    = $1;
        $yr      -= 1900 if ($yr > 100); # Damn 2-digit year routines :-)
        $date     = timegm($6, $5, $4, $3, $2 - 1, $yr);
        ($author) = /author: ([^;]+)/;
        $state    = 'log';
        $log      = '';
        next;
      } elsif ($rev eq '' && /^revision (\d+(?:\.\d+)+).*$/) {
        $rev = $1;    # .*$ eats up the locker(lockers?) info, if any
        next;
      } else {
        $log .= $_;
      }
    }

    if ($_ =~ LOG_FILESEPR) {
      $state = "start";
      next;
    }
  }

  my $linesread = $. || 0;
  close($fh);

  if ($linesread == 0) {
    fatal('500 Internal Error',
          'Failed to spawn GNU rlog on "%s".

Did you set the @command_path in your configuration file correctly? (Currently: "%s")',
          htmlquote(join(', ', @files)), join(':', @command_path));
  }

  return @unreadable;
}


sub readLog($;$)
{
  my ($fullname, $revision) = @_;
  my ($symnames, $head, $rev, $br, $brp, $branch, $branchrev);

  undef %symrev;
  undef %revsym;
  undef @allrevisions;
  undef %date;
  undef %author;
  undef %state;
  undef %difflines;
  undef %log;
  $keywordsubstitution = '';

  my $fh = do { local (*FH); };
  if (!open($fh, "-|")) {    # child
    openOutputFilter();
    $revision = defined($revision) ? "-r$revision" : '';
    if ($revision =~ /\./) {
      # Normal revision, not a branch/tag name.
      exec($CMD{rlog}, $revision, $fullname) or exit -1;
    } else {
      exec($CMD{rlog}, $fullname) or exit -1;
    }
  }

  my $curbranch = undef;
  while (<$fh>) {
    if ($symnames) {
      if (/^\s+([^:]+):\s+([\d\.]+)/) {
        $symrev{$1} = $2;
        next;
      } else {
        $symnames = 0;
      }
    }
    if (/^head:\s+([\d\.]+)/) {
      $head = $1;
    } elsif (/^branch:\s+([\d\.]+)/) {
      $curbranch = $1;
    } elsif (/^symbolic names/) {
      $symnames = 1;
    } elsif (/^keyword substitution: (.+)$/) {
      $keywordsubstitution = $1;
    } elsif (/^-----/) {
      last;
    }
  }
  ($curbranch = $head) =~ s/\.\d+$// if (!defined($curbranch));

  # each log entry is of the form:
  # ----------------------------
  # revision 3.7.1.1
  # date: 1995/11/29 22:15:52;  author: fenner;  state: Exp;  lines: +5 -3
  # log info
  # ----------------------------

  # For a locked revision, the first line after the separator 
  # becomes smth like
  # revision 9.19       locked by: vassilii;

  logentry:

  while ($_ !~ LOG_FILESEPR) {
    $_ = <$fh>;
    last logentry if (!defined($_));    # EOF
    if (/^revision (\d+(?:\.\d+)+)/) {
      $rev = $1;
      unshift(@allrevisions, $rev);
    } elsif ($_ =~ LOG_FILESEPR || $_ =~ LOG_REVSEPR) {
      next logentry;
    } else {

      # The rlog output is syntactically ambiguous.  We must
      # have guessed wrong about where the end of the last log
      # message was.
      # Since this is likely to happen when people put rlog output
      # in their commit messages, don't even bother keeping
      # these lines since we don't know what revision they go with
      # any more.
      next logentry;
    }
    $_ = <$fh>;
    if (
      m|^date:\s+(\d+)/(\d+)/(\d+)\s+(\d+):(\d+):(\d+);\s+author:\s+(\S+);\s+state:\s+(\S+);\s+(lines:\s+([0-9\s+-]+))?|
      )
    {
      my $yr           = $1;
      $yr             -= 1900 if ($yr > 100); # Damn 2-digit year routines :-)
      $date{$rev}      = timegm($6, $5, $4, $3, $2 - 1, $yr);
      $author{$rev}    = $7;
      $state{$rev}     = $8;
      $difflines{$rev} = $10;
    } else {
      fatal("500 Internal Error", 'Error parsing RCS output: %s', $_);
    }

  line:
    while (<$fh>) {
      next line if (/^branches:\s/);
      last line if ($_ =~ LOG_FILESEPR || $_ =~ LOG_REVSEPR);
      $log{$rev} .= $_;
    }
  }
  close($fh);

  @revorder = reverse sort { revcmp($a, $b) } @allrevisions;

  #
  # HEAD is an artificial tag which is simply the highest tag number on the main
  # branch, unless there is a branch tag in the RCS file in which case it's the
  # highest revision on that branch.  Find it by looking through @revorder; it
  # is the first commit listed on the appropriate branch.
  # This is not neccesary the same revision as marked as head in the RCS file.
  my $headrev = $curbranch || "1";
  ($symrev{MAIN} = $headrev) =~ s/(\d+)$/0.$1/;

  foreach $rev (@revorder) {
    if ($rev =~ /^(\S*)\.\d+$/ && $headrev eq $1) {
      $symrev{HEAD} = $rev;
      last;
    }
  }
  ($symrev{HEAD} = $headrev) =~ s/\.\d+$// unless defined($symrev{HEAD});

  #
  # Now that we know all of the revision numbers, we can associate
  # absolute revision numbers with all of the symbolic names, and
  # pass them to the form so that the same association doesn't have
  # to be built then.
  #
  undef @branchnames;
  undef %branchpoint;
  undef $sel;

  foreach (reverse sort keys %symrev) {
    $rev = $symrev{$_};
    if ($rev =~ /^((.*)\.)?\b0\.(\d+)$/) {
      push (@branchnames, $_);

      #
      # A revision number of A.B.0.D really translates into
      # "the highest current revision on branch A.B.D".
      #
      # If there is no branch A.B.D, then it translates into
      # the head A.B .
      #
      # This reasoning also applies to the main branch A.B,
      # with the branch number 0.A, with the exception that
      # it has no head to translate to if there is nothing on
      # the branch, but I guess this can never happen?
      #
      # (the code below gracefully forgets about the branch
      # if it should happen)
      #
      $head = defined($2) ? $2 : "";
      $branch = $3;
      $branchrev = $head . ($head ne "" ? "." : "") . $branch;
      $rev = $head;

      my $regex = '^' . quotemeta($branchrev) . '\b';
      $regex = qr/$regex/;

      foreach my $r (@revorder) {
        if ($r =~ $regex) {
          $rev = $branchrev;
          last;
        }
      }
      next if ($rev eq "");

      if ($rev ne $head && $head ne "") {
        $branchpoint{$head} .= ', ' if ($branchpoint{$head});
        $branchpoint{$head} .= $_;
      }
    }
    $revsym{$rev} .= ", " if ($revsym{$rev});
    $revsym{$rev} .= $_;
    $sel .= sprintf("\n",
                    htmlquote($rev), (htmlquote($_)) x 2);
  }

  my ($onlyonbranch, $onlybranchpoint);
  if ($onlyonbranch = $input{only_with_tag}) {
    $onlyonbranch = $symrev{$onlyonbranch};
    if ($onlyonbranch && $onlyonbranch =~ s/\b0\.//) {
      ($onlybranchpoint = $onlyonbranch) =~ s/\.\d+$//;
    } else {
      $onlybranchpoint = $onlyonbranch;
    }

    if (!defined($onlyonbranch) || $onlybranchpoint eq "") {
      fatal("404 Tag not found", 'Tag "%s" is not defined.',
            $input{only_with_tag});
    }
  }

  undef @revisions;

  foreach (@allrevisions) {
    ($br  = $_)  =~ s/\.\d+$//;
    ($brp = $br) =~ s/\.\d+$//;
    next if ($onlyonbranch
             && $br ne $onlyonbranch
             && $_  ne $onlybranchpoint);
    unshift(@revisions, $_);
  }

  if ($logsort eq "date") {

    # Sort the revisions in commit order an secondary sort on revision
    # (secondary sort needed for imported sources, or the first main
    # revision gets before the same revision on the 1.1.1 branch)
    @revdisplayorder =
      sort { $date{$b} <=> $date{$a} || -revcmp($a, $b) } @revisions;
  } elsif ($logsort eq "rev") {

    # Sort the revisions in revision order, highest first
    @revdisplayorder = reverse sort { revcmp($a, $b) } @revisions;
  } else {

    # No sorting. Present in the same order as rlog / cvs log
    @revdisplayorder = @revisions;
  }

  return $curbranch;
}


sub getDiffLinks($$$)
{
  my ($url, $mimetype, $isbin) = @_;

  my @links = ();
  if (!$isbin) { # Offer ordinary diff only for non-binary files.
    push(@links, &link('preferred', $url));
    for my $difftype ($DIFFTYPES{$defaultDiffType}{colored} ? qw(u) : qw(h)) {
      my $f = $difftype eq $defaultDiffType ? '' : $difftype;
      push(@links,
           &link(htmlquote(lc($DIFFTYPES{$difftype}{descr})), "$url;f=$f"));
    }
  }
  if (my $extdiffs = $DIFF_COMMANDS{lc($mimetype)}) {
    for my $i (0 .. scalar(@$extdiffs)-1) {
      my $extdiff = $extdiffs->[$i];
      push(@links, &link(htmlquote($extdiff->{name}), "$url;f=ext$i"))
        if ($extdiff->{cmd} && $extdiff->{name});
    }
  }
  return @links;
}


sub printLog($$$;$$)
{
  # inlogview: 1 if in log view, otherwise in markup view.
  ($_, my $mimetype, my $isbin, my $inlogview, my $isSelected) = @_;
  (my $br  = $_)  =~ s/\.\d+$//;
  (my $brp = $br) =~ s/\.?\d+$//;

  print "";
  if (defined($revsym{$_})) {
    foreach my $sym (split(", ", $revsym{$_})) {
      print '';
    }
  }
  if ($revsym{$br} && !defined($nameprinted{$br})) {
    foreach my $sym (split(", ", $revsym{$br})) {
      print '';
    }
    $nameprinted{$br} = 1;
  }

  print "\n Revision $_";
  if (/^1\.1\.1\.\d+$/) {
    print " (vendor branch)";
  }

  (my $filename = $where) =~ s|^.*/||;
  my $fileurl   = uri_escape($filename);
  undef $filename;

  my $isDead = ($state{$_} eq 'dead');
  if (!$isDead) {

    print ': ', download_link($fileurl, $_, 'download', $mimetype);

    my @vlinks = ();
    push(@vlinks, display_link($fileurl, $_, 'text', 'text/plain'))
      unless $isbin;
    push(@vlinks, display_link($fileurl, $_, 'markup', 'text/x-cvsweb-markup'))
      if ($allow_markup && $inlogview && (!$isbin || viewable($mimetype)));
    if (!$isbin && $allow_annotate) {
      push(@vlinks,
           &link('annotated',
                 sprintf('%s?annotate=%s%s', $fileurl, $_, $barequery)));
    }
    print ' - view: ', join(', ', @vlinks) if @vlinks;
    undef @vlinks;

    if (!$isbin && $allow_version_select) {
      print ' - ';
      if ($isSelected) {
        print '[selected for diffs]';
      } else {
        print &link('select for diffs',
                    sprintf('%s?r1=%s%s#rev%s',
                            $fileurl, $_, $barequery, $_));
      }
    }
    print ' - ', graph_link('', 'revision graph')
      if (!$inlogview && $allow_cvsgraph);
  }
  print "
\n";

  print '';
  if (defined @mytz) {
    my ($est) = $mytz[(localtime($date{$_}))[8]];
    print scalar localtime($date{$_}), " $est (";
  } else {
    print scalar gmtime($date{$_}), " UTC (";
  }
  print readableTime(time() - $date{$_}, 1), ' ago)';
  print ' by ', htmlquote($author{$_}), "
\n";

  printf("Branches: %s
\n", link_tags($revsym{$br})) if $revsym{$br};
  printf("CVS tags: %s
\n", link_tags($revsym{$_}))  if $revsym{$_};
  printf("Branch point for: %s
\n", link_tags($branchpoint{$_}))
    if $branchpoint{$_};

  # Find the previous revision
  my $prev;
  my @prevrev = split(/\./, $_);
  do {
    if (--$prevrev[$#prevrev] <= 0) {

      # If it was X.Y.Z.1, just make it X.Y
      pop (@prevrev);
      pop (@prevrev);
    }
    $prev = join (".", @prevrev);
  } until (defined($date{$prev}) || $prev eq "");

  if ($isDead) {
    print "FILE REMOVED
\n";
  } else {
    my %diffrev = ();
    $diffrev{$_} = 1;
    $diffrev{""} = 1;
    my $diff = 'Diff to:';
    my $printed = 0;

    #
    # Offer diff to previous revision
    if ($prev) {
      $diffrev{$prev} = 1;
      my $url =
        sprintf('%s.diff?r1=%s;r2=%s%s', $fileurl, $prev, $_, $barequery);
      if (my @dlinks = getDiffLinks($url, $mimetype, $isbin)) {
        print $diff, ' previous ', $prev, ': ', join(', ', @dlinks);
        $diff = ';'; $printed = 1;
      }
    }

    #
    # Plus, if it's on a branch, and it's not a vendor branch,
    # offer a diff with the branch point.
    if ($revsym{$brp}
      && !/^1\.1\.1\.\d+$/
      && !defined($diffrev{$brp}))
    {
      my $url =
        sprintf('%s.diff?r1=%s;r2=%s%s', $fileurl, $brp, $_, $barequery);
      if (my @dlinks = getDiffLinks($url, $mimetype, $isbin)) {
        print $diff, ' branchpoint ', $brp, ': ', join(', ', @dlinks);
        $diff = ';'; $printed = 1;
      }
    }

    #
    # Plus, if it's on a branch, and it's not a vendor branch,
    # offer to diff with the next revision of the higher branch.
    # (e.g. change gets committed and then brought
    # over to -stable)
    if (/^\d+\.\d+\.\d+/ && !/^1\.1\.1\.\d+$/) {
      my ($i, $nextmain);

      for ($i = 0; $i < $#revorder && $revorder[$i] ne $_; $i++) {
      }
      my @tmp2 = split(/\./, $_);
      for ($nextmain = ""; $i > 0; $i--) {
        my $next = $revorder[$i - 1];
        my @tmp1 = split(/\./, $next);

        if (@tmp1 < @tmp2) {
          $nextmain = $next;
          last;
        }

        # Only the highest version on a branch should have
        # a diff for the "next MAIN".
        last
          if (@tmp1 - 1 <= @tmp2
          && join (".", @tmp1[0 .. $#tmp1 - 1]) eq
          join (".", @tmp2[0 .. $#tmp1 - 1]));
      }

      if (!defined($diffrev{$nextmain})) {
        $diffrev{$nextmain} = 1;
        my $url = sprintf('%s.diff?r1=%s;r2=%s%s',
          $fileurl, $nextmain, $_, $barequery);
        if (my @dlinks = getDiffLinks($url, $mimetype, $isbin)) {
          print $diff, ' next MAIN ', $nextmain, ': ', join(', ', @dlinks);
          $diff = ';'; $printed = 1;
        }
      }
    }

    # Plus if user has selected only r1, then present a link
    # to make a diff to that revision
    if (defined($input{r1}) && !defined($diffrev{$input{r1}})) {
      $diffrev{$input{r1}} = 1;
      my $url = sprintf('%s.diff?r1=%s;r2=%s%s',
        $fileurl, $input{r1}, $_, $barequery);
      if (my @dlinks = getDiffLinks($url, $mimetype, $isbin)) {
        print $diff, ' selected ', $input{r1}, ': ', join(', ', @dlinks);
        $diff = ';'; $printed = 1;
      }
    }

    print "
\n" if $printed;
  }

  if ($prev ne "" && $difflines{$_}) {
    printf "Changes since revision %s: %s lines
\n",
      htmlquote($prev), htmlquote($difflines{$_});
  }

  print "
\n";
  print &htmlify($log{$_}, $allow_log_extra);
  print "
\n";
}


#
# Generates the HTML view for CvsGraph.
#
sub doGraphView()
{
  (my $pathname = $where) =~ s|[^/]*$||;
  (my $filename = $where) =~ s|^.*/||;

  navigateHeader($scriptwhere, $pathname, $filename, undef, 'graph');

  my $title = 'Revision graph of ' . htmlquote($pathname . $filename);
  my $mapname = 'CvsGraphMap';

  printf(<%s

%s
EOF

  # Remove any pre-existing tag/branch names from branch links.
  (my $notag_query = $barequery) =~ s/;+only_with_tag=.*?(?=;|$)//g;

  my @graph_cmd =
    ($CMD{cvsgraph},
     '-r', $cvsroot,
     '-m', $pathname,
     '-i',
     '-M', $mapname,
     '-x', 'x',
     "-Omap_branch_href=\"href=\\\"./?only_with_tag=%(%t%)$notag_query\\\"\"",
     "-Omap_rev_href=\"href=\\\"?rev=%(%R%)$barequery\\\"\"",
     "-Omap_diff_href=\"href=\\\"%(%F%).diff" .
     "?r1=%(%P%);r2=%(%R%)$barequery\\\"\"",
     );
  push(@graph_cmd, '-c', $cvsgraph_config) if $cvsgraph_config;
  push(@graph_cmd, $filename . ',v');

  local *CVSGRAPH_OUT;
  my ($h, $err) =
    startproc(\@graph_cmd, \"", '>pipe', \*CVSGRAPH_OUT);
  fatal('500 Internal Error', $err) unless $h;

  # Browser compatibility kludge: many browsers do not support client side
  # image maps where the  element contains only the id attribute.  Let's
  # add the corresponding name attribute to it on the fly.
  while () {
    s/(/$1 name="$2">/;
    print;
  }

  $h->finish();
  print "
\n";

  html_footer();
}


#
# Generates a graph using CvsGraph.
#
sub doGraph()
{
  (my $pathname = $where) =~ s|[^/]*$||;
  (my $filename = $where) =~ s|^.*/||;

  http_header('image/png');

  my @graph_cmd = ($CMD{cvsgraph}, '-r', $cvsroot, '-m', $pathname);
  push(@graph_cmd, '-c', $cvsgraph_config) if $cvsgraph_config;
  push(@graph_cmd, $filename . ',v');

  local *CVSGRAPH_OUT;
  my ($h, $err) =
    startproc(\@graph_cmd, \"", '>pipe', \*CVSGRAPH_OUT);
  fatal('500 Internal Error', $err) unless $h;
  {
    local $/ = undef;
    binmode(\*STDOUT);
    print ;
  }
  $h->finish();
}


sub doLog($)
{
  my ($fullname) = @_;

  my $curbranch = readLog($fullname);

  html_header("CVS log for $where");

  my $upwhere = $where;
  (my $filename = $where) =~ s|^.*/||;
  my $backurl = "./$query#" . uri_escape($filename);
  if ($where =~ m|^(.*?)((?<=/)Attic/)?[^/]+$|) {
    $upwhere = $1;
    $backurl = ".$backurl" if $2; # skip over Attic
  }

  my $isbin = $keywordsubstitution =~ /b/;
  my $mimetype = getMimeType($filename, $isbin);

  print "
\n ";
  print &link($backicon, $backurl), " Up to ",
    &clickablePath($upwhere, 1), "\n
\n";
  print "
\n ";
  print &link('Request diff between arbitrary revisions', '#diff');
  print ' - ', &graph_link('', 'Display revisions graphically')
    if $allow_cvsgraph;
  if ($cvshistory_url) {
    (my $d = $upwhere) =~ s|/+$||;
    print ' - ', history_link($d, $filename);
  }
  print "\n
\n
\n";

  print "
\n";

  my $explain = $isbin ? ' (i.e.: CVS considers this a binary file)' : '';
  print "Keyword substitution: $keywordsubstitution$explain
\n";
  if ($curbranch) {
    print "Default branch: ", ($revsym{$curbranch} || $curbranch);
  } else {
    print "No default branch";
  }
  print "
\n";

  print 'Current tag: ', htmlquote($input{only_with_tag}), "
\n"
    if $input{only_with_tag};
  print "
\n";

  undef %nameprinted;

  for my $r (@revdisplayorder) {
    print "
\n";
    my $sel = (defined($input{r1}) && $input{r1} eq $r);
    print "
\n" if $sel;
    printLog($r, $mimetype, $isbin, 1, $sel);
    print "
\n" if $sel;
  }

  printf(<




Diff request


 
  This form allows you to request diffs between any two revisions of a file.
  You may select a symbolic revision name using the selection box or you may
  type in a numeric name using the type-in text box.
 


EOF

  foreach (@stickyvars) {
    printf("\n",
           $_, htmlquote($input{$_}))
      if (defined($input{$_}) &&
          (!defined($DEFAULTVALUE{$_}) || $input{$_} ne $DEFAULTVALUE{$_}));
  }

  print <





\n";

  my $diffrev = defined($input{r1}) ?
    $input{r1} : $revdisplayorder[$#revdisplayorder];

  printf(<








\n";

  $diffrev = defined($input{r2}) ? $input{r2} : $revdisplayorder[0];

  printf(<












Log view options

EOF

  if (@branchnames) {

    printf(<

EOF
  }

  print <








EOF
  printDiffSelect($use_java_script);
  print <














EOF
  printLogSortSelect($use_java_script);
  print <





EOF
  foreach (@stickyvars) {
    next if ($_ eq "f");
    next if ($_ eq "only_with_tag");
    next if ($_ eq "logsort");
    printf("\n",
           htmlquote($input{$_}))
      if (defined($input{$_})
          && (!defined($DEFAULTVALUE{$_}) || $input{$_} ne $DEFAULTVALUE{$_}));
  }
  print "
\n
\n";
  html_footer();
}


sub flush_diff_rows($$$$)
{
  my ($leftColRef, $rightColRef, $leftRow, $rightRow) = @_;

  return unless defined($state);

  if ($state eq "PreChangeRemove") {    # we just got remove-lines before
    for (my $j = 0; $j < $leftRow; $j++) {
      printf(<
  %s
  

EOF
    }
  } elsif ($state eq "PreChange") {     # state eq "PreChange"
                                        # we got removes with subsequent adds
    if (HAS_EDIFF) {
      # construct the suffix tree
      my $left_diff = join("\n", @$leftColRef[0..$leftRow-1]);
      my $right_diff = join("\n", @$rightColRef[0..$rightRow-1]);
      my $diff_str = String::Ediff::ediff($left_diff, $right_diff);

      my @diff_str = split(/ /, $diff_str);
      my $INFINITY = 10000000;
      push(@diff_str, ($INFINITY) x 8);
      my ($idx, $b1, $e1, $lb1, $le1, $b2, $e2, $lb2, $le2) =
        (0, @diff_str[0..7]);
      my ($l_cul, $r_cul) = (0, 0);
      my ($ldx, $rdx) = (0, 0);
      my (@left_html, @right_html);
      for (my $j = 0; $j < $leftRow; $j++) {
        my $line_len = length(@$leftColRef[$j]);
        my $line = @$leftColRef[$j];
        $l_cul += length($line) + 1; # includes "\n"
        my $l_culx = $l_cul - 1; # not includes "\n"
        if ($j < $lb1) {
          $line = spacedHtmlText($line);
          push(@left_html, "$line");
        } elsif ($lb1 == $j) {
          my $html_line;
          while ($lb1 == $j) {
            my $begin_char = $l_culx - $b1;

            $line =~ /^(.*)(.{$begin_char})$/;
            $html_line .= spacedHtmlText($1) .
              '';
            $line = $2;
            last if ($j != $le1);

            my $end_char = $l_culx - $e1;
            $line =~ /^(.*)(.{$end_char})$/;
            $html_line .= spacedHtmlText($1) .
              '';
            $line = $2;

            $idx++;
            my ($tb1, $te1, $tlb1, $tle1, $tb2, $te2, $tlb2, $tle2) =
              ($b1, $e1, $lb1, $le1, $b2, $e2, $lb2, $le2);
            ($b1, $e1, $lb1, $le1, $b2, $e2, $lb2, $le2) =
              @diff_str[$idx*8..($idx+1)*8-1];
            $lb1 = $INFINITY if ($lb1 < 0);
            $lb2 = $INFINITY if ($lb2 < 0);
            $le1 = $INFINITY if ($le1 < 0);
            $le2 = $INFINITY if ($le2 < 0);
            if ($te1 > $b1) {
              ($b1, $lb1) = ($te1, $tle1);
            }
            if ($te2 > $b2) {
              ($b2, $lb2) = ($te2, $tle2);
            }
          }
          push(@left_html,
               sprintf('%s%s',
                       $html_line, spacedHtmlText($line)));
        } elsif ($le1 == $j) {
          my $html_line;
          while ($le1 == $j) {
            my $end_char = $l_culx - $e1;
            $line =~ /^(.*)(.{$end_char})$/;
            $html_line .= spacedHtmlText($1) .
              '';
            $line = $2;

            $idx++;
            my ($tb1, $te1, $tlb1, $tle1, $tb2, $te2, $tlb2, $tle2) =
              ($b1, $e1, $lb1, $le1, $b2, $e2, $lb2, $le2);
            ($b1, $e1, $lb1, $le1, $b2, $e2, $lb2, $le2) =
              @diff_str[$idx*8..($idx+1)*8-1];
            $lb1 = $INFINITY if ($lb1 < 0);
            $lb2 = $INFINITY if ($lb2 < 0);
            $le1 = $INFINITY if ($le1 < 0);
            $le2 = $INFINITY if ($le2 < 0);
            if ($te1 > $b1) {
              ($b1, $lb1) = ($te1, $tle1);
            }
            if ($te2 > $b2) {
              ($b2, $lb2) = ($te2, $tle2);
            }

            last if ($lb1 != $j);

            my $begin_char = $l_culx - $b1;

            $line =~ /^(.*)(.{$begin_char})$/;
            $html_line .= spacedHtmlText($1) .
              '';
            $line = $2;
          }
          push(@left_html,
              sprintf('%s%s',
                      $html_line, spacedHtmlText($line)));
        } else {
          $line = spacedHtmlText($line);
          push(@left_html, "$line");
        }
      }
      ($idx, $b1, $e1, $lb1, $le1, $b2, $e2, $lb2, $le2) =
        (0, @diff_str[0..7]);
      $lb1 = $INFINITY if ($lb1 < 0);
      $lb2 = $INFINITY if ($lb2 < 0);
      $le1 = $INFINITY if ($le1 < 0);
      $le2 = $INFINITY if ($le2 < 0);
      for (my $j = 0; $j < $rightRow; $j++) {
        my $line_len = length(@$rightColRef[$j]);
        my $line = @$rightColRef[$j];
        $r_cul += length($line) + 1; # includes "\n"
        my $r_culx = $r_cul - 1; # not includes "\n"
        if ($j < $lb2) {
          $line = spacedHtmlText($line);
          push(@right_html, "$line");
        } elsif ($lb2 == $j) {
          my $html_line;
          while ($lb2 == $j) {
            my $begin_char = $r_culx - $b2;

            $line =~ /^(.*)(.{$begin_char})$/;
            $html_line .= spacedHtmlText($1) .
              '';
            $line = $2;

            last if ($j != $le2);

            my $end_char = $r_culx - $e2;
            $line =~ /^(.*)(.{$end_char})$/;
            $html_line .= spacedHtmlText($1) .
              '';
            $line = $2;

            $idx++;
            my ($tb1, $te1, $tlb1, $tle1, $tb2, $te2, $tlb2, $tle2) =
              ($b1, $e1, $lb1, $le1, $b2, $e2, $lb2, $le2);
            ($b1, $e1, $lb1, $le1, $b2, $e2, $lb2, $le2) =
              @diff_str[$idx*8..($idx+1)*8-1];
            $lb1 = $INFINITY if ($lb1 < 0);
            $lb2 = $INFINITY if ($lb2 < 0);
            $le1 = $INFINITY if ($le1 < 0);
            $le2 = $INFINITY if ($le2 < 0);
            if ($te1 > $b1) {
              ($b1, $lb1) = ($te1, $tle1);
            }
            if ($te2 > $b2) {
              ($b2, $lb2) = ($te2, $tle2);
            }
          }
          push(@right_html,
               sprintf('%s%s',
                       $html_line, spacedHtmlText($line)));
        } elsif ($le2 == $j) {
          my $html_line;
          while ($le2 == $j) {
            my $end_char = $r_culx - $e2;
            $line =~ /^(.*)(.{$end_char})$/;
            $html_line .= spacedHtmlText($1) .
              '';
            $line = $2;

            $idx++;
            my ($tb1, $te1, $tlb1, $tle1, $tb2, $te2, $tlb2, $tle2) =
              ($b1, $e1, $lb1, $le1, $b2, $e2, $lb2, $le2);
            ($b1, $e1, $lb1, $le1, $b2, $e2, $lb2, $le2) =
              @diff_str[$idx*8..($idx+1)*8-1];
            $lb1 = $INFINITY if ($lb1 < 0);
            $lb2 = $INFINITY if ($lb2 < 0);
            $le1 = $INFINITY if ($le1 < 0);
            $le2 = $INFINITY if ($le2 < 0);
            if ($te1 > $b1) {
              ($b1, $lb1) = ($te1, $tle1);
            }
            if ($te2 > $b2) {
              ($b2, $lb2) = ($te2, $tle2);
            }

            last if ($lb2 != $j);

            my $begin_char = $r_culx - $b2;
            $line =~ /^(.*)(.{$begin_char})$/;
            $html_line .= spacedHtmlText($1) .
              '';
            $line = $2;
          }
          push(@right_html,
               sprintf('%s%s',
                       $html_line, spacedHtmlText($line)));
        } else {
          $line = spacedHtmlText ($line);
          push @right_html, "$line";
        }
      }
      for (my $j = 0; $j < $leftRow || $j < $rightRow ; $j++) { # dump out both cols
        print  '';
        if ($j < $leftRow) {
          print $left_html[$j];
        } else {
          print ' ';
        }
        if ($j < $rightRow) {
          print $right_html[$j];
        } else {
          print ' ';
        }
        print "\n";
      }
    } else {
      for (my $j = 0; $j < $leftRow || $j < $rightRow; $j++) { # dump both cols
        print "\n";
        if ($j < $leftRow) {
          print ' ' .
            spacedHtmlText(@$leftColRef[$j]) . '';
        } else {
          print ' ';
        }
        print "\n";

        if ($j < $rightRow) {
          print ' ' .
            spacedHtmlText(@$rightColRef[$j]) . '';
        } else {
          print ' ';
        }
        print "\n\n";
      }
    }
  }
}


#
# Generates "human readable", HTMLified diffs.
#
sub human_readable_diff($$)
{
  my ($fh, $rev) = @_;

  (my $where_nd       = $where)       =~ s|\.diff$||;
  (my $filename       = $where_nd)    =~ s|^.*/||;
  (my $pathname       = $where_nd)    =~ s|((?<=/)Attic/)?[^/]*$||;
  (my $scriptwhere_nd = $scriptwhere) =~ s|\.diff$||;

  navigateHeader($scriptwhere_nd, $pathname, $filename, $rev, 'diff');

  # Read header to pick up read revision and date, if possible.

  my ($r1d, $r1r, $r2d, $r2r);
  while (<$fh>) {
    ($r1d, $r1r) = /\t(.*)\t(.*)$/ if (/^--- /);
    ($r2d, $r2r) = /\t(.*)\t(.*)$/ if (/^\+\+\+ /);
    last if (/^\+\+\+ /);
  }

  my ($rev1, $date1);
  if (defined($r1r) && $r1r =~ /^(\d+\.)+\d+$/) {
    $rev1  = $r1r;
    $date1 = $r1d;
  }
  my ($rev2, $date2);
  if (defined($r2r) && $r2r =~ /^(\d+\.)+\d+$/) {
    $rev2  = $r2r;
    $date2 = $r2d;
  }
  $rev1  = $input{r1}      unless defined($rev1);
  $rev1  = $input{tr1}     if (defined($rev1) && $rev1 eq 'text');
  $rev1  = 'unknown-left'  unless defined($rev1);
  $rev2  = $input{r2}      unless defined($rev2);
  $rev2  = $input{tr2}     if (defined($rev2) && $rev2 eq 'text');
  $rev2  = 'unknown-right' unless defined($rev2);
  $date1 = defined($date1) ? ', ' . htmlquote($date1) : '';
  $date2 = defined($date2) ? ', ' . htmlquote($date2) : '';

  my $link = uri_escape($filename) . ($query ? "$query;" : '?');

  # Using Diff for /$where_nd between versions $rev1 and $rev2



EOF

  # Process diff text
  # prefetch several lines
  my @buf = head($fh);
  my %d = scan_directives(@buf);

  my $leftRow  = 0;
  my $rightRow = 0;
  my ($difftxt, @rightCol, @leftCol, $oldline, $newline, $funname);

  $link .= 'content-type=text%2Fx-cvsweb-markup;';
  $link .= 'ln=1;' unless ($link =~ /\?.*\bln=1\b/);

  while (@buf || !eof($fh)) {
    $difftxt = @buf ? shift @buf : <$fh>;

    if ($difftxt =~ /^@@/) {
      ($oldline, $newline, $funname) =
        $difftxt =~ /@@ \-([0-9]+).*\+([0-9]+).*@@(.*)/;
      $funname = htmlquote($funname);
      $funname =~ s/\s/ /go;
      $funname &&= " $funname";
      my $ol = $oldline || 1;
      my $nl = $newline || 1;

      print <

EOF

      $state    = "dump";
      $leftRow  = 0;
      $rightRow = 0;
    } else {
      my ($diffcode, $rest) = $difftxt =~ /^([-+ ])(.*)/;
      $diffcode = '' unless defined($diffcode);
      $_ = $rest;

      #########
      # little state machine to parse unified-diff output (Hen, zeller@think.de)
      # in order to get some nice 'ediff'-mode output
      # states:
      #  "dump"             - just dump the value
      #  "PreChangeRemove"  - we began with '-' .. so this could be the start of a 'change' area or just remove
      #  "PreChange"        - okey, we got several '-' lines and moved to '+' lines -> this is a change block
      ##########

      if ($diffcode eq '+') {
        if ($state eq "dump")
        {    # 'change' never begins with '+': just dump out value
          $_ = spacedHtmlText($rest, $d{tabstop});
          printf(<
 
EOF
        } else {    # we got minus before
          $state = "PreChange";
          $rightCol[$rightRow++] = $_;
        }
      } elsif ($diffcode eq '-') {
        $state = "PreChangeRemove";
        $leftCol[$leftRow++] = $_;
      } else {    # empty diffcode
        flush_diff_rows \@leftCol, \@rightCol, $leftRow, $rightRow;
        $_ = spacedHtmlText($rest, $d{tabstop});
        printf(<
 
EOF
        $state    = "dump";
        $leftRow  = 0;
        $rightRow = 0;
      }
    }
  }
  close($fh);

  flush_diff_rows \@leftCol, \@rightCol, $leftRow, $rightRow;

  # state is empty if we didn't have any change
  if (!$state) {
    print <
 
EOF
  }

  printf(<













version $rev1$date1


version $rev2$date2



 Line $oldline$funname


 Line $newline$funname


 
  %s

 %s
  %s

 




 - No viewable change -


 

  Removed from v.%s
   
 

  changed lines
 

   
  Added in v.%s
 






EOF
}


sub doEnscript($$$;$)
{
  my ($filehandle, $highlight, $linenumbers, $lang) = @_;
  $lang ||= 'cvsweb';

  my @cmd = ($CMD{enscript},
             @enscript_options,
             '-q', "--language=$lang", '-o', '-', "--highlight=$highlight");

  local *ENSCRIPT_OUT;
  my ($h, $err) =
    startproc(\@cmd, $filehandle, '>pipe', \*ENSCRIPT_OUT);
  fatal('500 Internal Error', $err) unless $h;

  # We could short-circuit and have enscript output directly to STDOUT above,
  # but that doesn't work with mod_perl (at least some 1.99 versions).
  if ($linenumbers) {
    my $ln = 0;
    while () {
      printf '%5d: ', (++$ln) x 2;
      print $_;
    }
  } else {
    local $/ = undef;
    print ;
  }
  $h->finish();
}


#
# The passed in $path and $filename should not be URI escaped, and $swhere
# *should* be.
#
sub navigateHeader($$$$$;$)
{
  my ($swhere, $path, $filename, $rev, $title, $moddate) = @_;
  $swhere = "" if ($swhere eq $scriptwhere);
  $swhere = './' . uri_escape($filename) if ($swhere eq "");

  my $qfile = htmlquote($filename);
  my $qpath = htmlquote($path);
  my $trev  = $rev ? " - " . htmlquote($rev) : '';

  http_header('text/html', $moddate);

  (my $header = &cgi_style::html_header($title, 0)) =~ s,\A.*,\n$HTML_META,s;
  $header .= $CSS .
'
 ";

  printf(<%s Up to %s
 

  

   ';
  print $header;

  my $frag = '';
  if ($rev) {
    $frag  = '#';
    $frag .= 'rev' if ($rev =~ /\./);  # Normal revision: prefix with "rev".
    $frag .= $rev;                     # Append revision/branch/tag.
  }
  my $backurl = "$swhere$query$frag";

  print &link($backicon, $backurl);
  printf 'Return to %s CVS log', &link($qfile, $backurl);
  print " $fileicon



EOF
}


sub plural_write($$)
{
  my ($num, $text) = @_;
  if ($num != 1) {
    $text .= "s";
  }

  if ($num > 0) {
    return join (' ', $num, $text);
  } else {
    return "";
  }
}


##
# print readable timestamp in terms of
# '..time ago'
# H. Zeller 
##
sub readableTime($$)
{
  my ($secs, $long) = @_;

  # This function works correctly for time >= 2 seconds.
  return 'very little time' if ($secs < 2);

  my %desc = (
              1        => 'second',
              60       => 'minute',
              3600     => 'hour',
              86400    => 'day',
              604800   => 'week',
              2628000  => 'month',
              31536000 => 'year'
             );

  my @breaks = sort { $a <=> $b } keys %desc;
  my $i = 0;

  while ($i <= $#breaks && $secs >= 2 * $breaks[$i]) {
    $i++;
  }
  $i--;
  my $break  = $breaks[$i];
  my $retval = plural_write(int($secs / $break), $desc{$break});

  if ($long == 1 && $i > 0) {
    my $rest = $secs % $break;
    $i--;
    $break = $breaks[$i];
    my $resttime = plural_write(int($rest / $break), $desc{$break});
    if ($resttime) {
      $retval .= ", $resttime";
    }
  }

  return $retval;
}


#
# Returns a htmlified path where each directory is a link for faster
# navigation.  $clickLast controls whether the basename
# (last directory/file) is a link as well.  The passed in $pathname should
# *not* be URI escaped.
#
sub clickablePath($$)
{
  my ($pathname, $clickLast) = @_;

  my $root = '[' . htmlquote($CVSROOTdescr{$cvstree} || $cvstree) . ']';

  # This should never happen (see chooseCVSRoot()), but let's be sure...
  return $root if ($pathname eq '/');

  my $retval =
    ' ' . &link($root, sprintf('%s/%s#dirlist', $scriptname, $query));
  my $wherepath = '';
  my ($lastslash) = $pathname =~ m|/$|;

  foreach (split(m|/|, $pathname)) {
    $retval .= ' / ';
    $wherepath .= "/$_";
    my $last = "$wherepath/" eq "/$pathname" || $wherepath eq "/$pathname";

    if ($clickLast || !$last) {
      $retval .= &link(htmlquote($_),
                       join ('',
                             $scriptname, uri_escape_path($wherepath),
                             (!$last || $lastslash ? '/' : ''), $query,
                             (!$last || $lastslash ? "#dirlist" : "")));
    } else {    # do not make a link to the current dir
      $retval .= htmlquote($_);
    }
  }
  return $retval;
}


sub chooseCVSRoot()
{
  print "
\n
\n";
  if (2 <= @CVSROOT) {
    foreach my $k (keys %input) {
      printf("\n",
             htmlquote($k), htmlquote($input{$k}))
        if ($input{$k} && $k ne 'cvsroot');
    }

    printf(<CVS Root:
';
  } else {

    # no choice -- but we need the form to select module/path,
    # at least for Netscape
    printf "CVS Root: [%s]",
      htmlquote($CVSROOTdescr{$cvstree} || $cvstree);
  }

  print <
Module path or alias:







EOF
}


sub chooseMirror()
{
  # This code comes from the original BSD-cvsweb
  # and may not be useful for your site; If you don't
  # set %MIRRORS this won't show up, anyway.
  scalar(%MIRRORS) or return;

  # Should perhaps exclude the current site somehow...
  print "\n
\nThis CVSweb is mirrored in\n";

  my @tmp = map(&link(htmlquote($_), $MIRRORS{$_}), sort keys %MIRRORS);
  my $tmp = pop (@tmp);

  if (scalar(@tmp)) {
    print join (', ', @tmp), ' and ';
  }

  print "$tmp.\n
\n";
}


sub fileSortCmp()
{
  (my $af = $a) =~ s/,v$//;
  (my $bf = $b) =~ s/,v$//;
  my ($rev1, $date1, $log1, $author1, $filename1) = @{$fileinfo{$af}}
    if (defined($fileinfo{$af}));
  my ($rev2, $date2, $log2, $author2, $filename2) = @{$fileinfo{$bf}}
    if (defined($fileinfo{$bf}));

  my $comp = 0;
  if (defined($filename1) && defined($filename2) &&
      $af eq $filename1   && $bf eq $filename2)
  {

    # Two files
    $comp = -revcmp($rev1, $rev2)             if ($byrev  && $rev1  && $rev2);
    $comp = ($date2   <=> $date1)             if ($bydate && $date1 && $date2);
    if ($input{ignorecase}) {
      $comp = (uc($log1)    cmp uc($log2))    if ($bylog && $log1 && $log2);
      $comp = (uc($author1) cmp uc($author2)) if ($byauthor &&
                                                  $author1 && $author2);
    } else {
      $comp = ($log1    cmp $log2)            if ($bylog && $log1 && $log2);
      $comp = ($author1 cmp $author2)         if ($byauthor &&
                                                  $author1 && $author2);
    }
  }

  if ($comp == 0) {

    # Directories first, then files under version control,
    # then other, "rogue" files.
    # Sort by filename if no other criteria available.

    my $ad = (
      (-d "$fullname/$a")
      ? 'D'
      : (defined($fileinfo{$af}) ? 'F' : 'R')
    );
    my $bd = (
      (-d "$fullname/$b")
      ? 'D'
      : (defined($fileinfo{$bf}) ? 'F' : 'R')
    );
    (my $c = $a) =~ s|.*/||;
    (my $d = $b) =~ s|.*/||;

    my ($l, $r) = ("$ad$c", "$bd$d");
    $comp = $input{ignorecase} ? (uc($l) cmp uc($r)) : ($l cmp $r);

    # Parent dir is always first, then Attic.
    if ($comp != 0) {
      if ($l eq 'D..') {
        $comp = -1;
      } elsif ($r eq 'D..') {
        $comp = 1;
      } elsif ($l eq 'DAttic') {
        $comp = -1;
      } elsif ($r eq 'DAttic') {
        $comp = 1;
      }
    }
  }
  return $comp;
}

#
# Returns a URL to download the selected revision.
# Expects the passed in URL to be URI escaped, relative, and without a query
# string.
#
sub download_url($$;$)
{
  my ($url, $revision, $mimetype) = @_;
  my @dots = $revision =~ /\./g;
  $revision =~ s/\b0\.(?=\d+$)// if (scalar(@dots) & 1);

  if (!defined($mimetype) || $mimetype !~ CVSWEBMARKUP) {
    my $path = $where;
    $path =~ s|[^/]+$||;
    $url = "$scriptname/$CheckoutMagic/$path$url";
  }
  $url .= '?rev=' . uri_escape($revision);
  $url .= ';content-type=' . uri_escape($mimetype) if $mimetype;

  return $url;
}

#
# Returns a link to download the selected revision.
# Expects the passed in URL to be URI escaped, relative,
# and without a query string.
#
sub download_link($$$;$)
{
  my ($url, $revision, $textlink, $mimetype) = @_;
  return sprintf('%s',
                 download_url($url, $revision, $mimetype) . $barequery,
                 htmlquote($textlink));
}

#
# Returns a URL to display the selected revision.
# Expects the passed in URL to be URI escaped, and without a query string.
#
sub display_url($$;$)
{
  my ($url, $revision, $mimetype) = @_;
  $url .= '?rev=' . uri_escape($revision);
  $url .= ';content-type=' . uri_escape($mimetype) if $mimetype;
  return $url;
}

#
# Returns a link to display the selected revision.
# Expects the passed in URL to be URI escaped, and without a query string.
#
sub display_link($$;$$)
{
  my ($url, $revision, $textlink, $mtype) = @_;
  $textlink = $revision unless defined($textlink);
  return sprintf('%s',
                 display_url($url, $revision, $mtype) . $barequery,
                 htmlquote($textlink));
}

#
# Expects the passed in URL to be URI escaped, and without a query string.
# The passed in link text should be already HTML escaped as appropriate.
#
sub graph_link($;$)
{
  my ($url, $text) = @_;
  $text ||= $graphicon;
  return sprintf('%s', $url, $barequery, $text);
}

#
# Returns a link to CVSHistory for the given directory and filename.
#
sub history_link($$;$)
{
  my ($dir, $file, $text) = @_;
  $dir  ||= '';
  $file ||= '';
  $text ||= 'History';
  return &link($text,
               sprintf('%s?cvsroot=%s;dsearch=%s;fsearch=%s;limit=1',
                       $cvshistory_url, uri_escape($input{cvsroot} || ''),
                       uri_escape($dir), uri_escape($file)));
}

# Returns a Query string with the
# specified parameter toggled
sub toggleQuery($;$)
{
  my ($toggle, $value) = @_;

  my %vars = %input;

  if (defined($value)) {
    $vars{$toggle} = $value;
  } else {
    $vars{$toggle} = $vars{$toggle} ? 0 : 1;
  }

  # Build a new query of non-default paramenters
  my $newquery = "";
  foreach my $var (@stickyvars) {
    my ($value)   = defined($vars{$var})         ? $vars{$var}         : "";
    my ($default) = defined($DEFAULTVALUE{$var}) ? $DEFAULTVALUE{$var} : "";

    if ($value ne $default) {
      $newquery .= ';' if ($newquery ne "");
      $newquery .= uri_escape($var) . '=' . uri_escape($value);
    }
  }

  if ($newquery) {
    return '?' . $newquery;
  }
  return "";
}

sub htmlquote($)
{
  local ($_) = @_;
  # Special Characters; RFC 1866
  s/&/&/g;
  s/\"/"/g;
  s//>/g;
  return $_;
}

sub htmlunquote($)
{
  local ($_) = @_;
  # Special Characters; RFC 1866
  s/"/\"/g;
  s/<//g;
  s/&/&/g;
  return $_;
}

sub uri_escape_path($)
{
  return join('/', map(uri_escape($_), split(m|/+|, shift, -1)));
}

sub http_header(;$$)
{
  my ($content_type, $moddate) = @_;
  $content_type ||= 'text/html';

  $content_type .= "; charset=$charset"
    if ($charset && $content_type =~ m,^text/,);

  # Note that in the following, we explicitly join() and concatenate the
  # headers instead of printing them as an array.  This is because some
  # systems, eg. early versions of mod_perl 2 don't quite get it if the
  # last \r\n\r\n isn't included in the last "payload" header print().

  my @headers = ();
  # TODO: ctime(3) from scalar gmtime() isn't HTTP compliant, see HTTP::Date.
  push(@headers, 'Last-Modified: ' . scalar gmtime($moddate) . ' GMT')
    if $moddate;
  push(@headers, 'Content-Type: ' . $content_type);

  if ($allow_compress && $maycompress) {
    if (HAS_ZLIB
        || (defined($CMD{gzip}) && open(GZIP, "| $CMD{gzip} -1 -c")))
    {

      push(@headers, 'Content-Encoding: x-gzip');
      push(@headers, 'Vary: Accept-Encoding');     # RFC 2616, 14.44
      print join("\r\n", @headers) . "\r\n\r\n";

      $| = 1;
      $| = 0;                                      # Flush header output.

      tie(*GZIP, __PACKAGE__, \*STDOUT) if HAS_ZLIB;
      select(GZIP);
      $gzip_open = 1;

    } else {

      print join("\r\n", @headers) . "\r\n\r\n";
      printf
        'Unable to find gzip binary in the $command_path (%s) to compress output
',
          htmlquote(join(':', @command_path));
    }

  } else {
    print join("\r\n", @headers) . "\r\n\r\n";
  }
}


sub html_header($;$)
{
  my ($title, $moddate) = @_;
  $title  = htmlquote($title);
  my $css = $CSS || '';
  http_header('text/html', $moddate);

  (my $header = &cgi_style::html_header($title, 0)) =~ s,\A.*,\n$HTML_META,s;
  $header .= $css;
  print $header;
}

sub html_footer()
{
  print &cgi_style::html_footer;
}

sub link_tags($)
{
  my ($tags) = @_;

  (my $filename = $where) =~ s|^.*/||;
  my $fileurl = './' . uri_escape($filename);

  my $ret = "";
  foreach my $sym (split(", ", $tags)) {
    $ret .= ",\n" if ($ret ne "");
    $ret .= &link(htmlquote($sym),
                  $fileurl . toggleQuery('only_with_tag', $sym));
  }
  return $ret;
}


#
# See if a file/dir is listed in the config file's @ForbiddenFiles list.
# Takes a full file system path or one relative to $cvsroot, and strips the
# trailing ",v" if present, then compares.  Returns 1 if forbidden, else 0.
#
sub forbidden($)
{
  (my $path = canonpath(shift)) =~ s/,v$//;
  $path =~ s|^$cvsroot/+||;
  for my $forbidden_re (@ForbiddenFiles) {
    return 1 if ($path =~ $forbidden_re);
  }
  return 0;
}


#
# Starts a process using IPC::Run.  All arguments are passed to
# IPC::Run::start() as-is.  Returns an array ($harness, $error) where
# $harness is from IPC::Run if start() succeeds, undef otherwise.  In case
# of an error, $error contains the error message.
#
sub startproc(@)
{
  my $h = my $err = undef;
  eval {
    local $SIG{__DIE__};
    $h = IPC::Run::start(@_) or die("return code: $?");
  };
  if ($@) {
    $h->finish() if $h;
    $h = undef;
    $err = "'@{$_[0]}' failed: $@";
  }
  return ($h, $err);
}

#
# Runs a process using IPC::Run.  All arguments are passed to
# IPC::Run::run() as-is.  Returns an array ($exitcode, $errormsg).
#
sub runproc(@)
{
  eval {
    local $SIG{__DIE__};
    IPC::Run::run(@_);
  };
  my $exitcode = $? >> 8;
  my $errormsg  = undef;
  if ($@) {
    $exitcode ||= -1;
    $errormsg = "'@{$_[0]}' failed: $@";
  }
  return ($exitcode, $errormsg);
}

#
# Check out a file to a temporary file.
#
sub checkout_to_temp($$$)
{
  my ($cvsroot, $cvsname, $rev) = @_;

  # Pipe given cvs file into a temporary place.
  my ($temp_fh, $temp_fn) = tempfile('.cvsweb.XXXXXXXX', DIR => tmpdir());

  my @cmd = ($CMD{cvs}, @cvs_options, '-Qd', $cvsroot,
             'co', '-p', "-r$rev", $cvsname);

  local (*DIFF_OUT);
  my ($h, $err) = startproc(\@cmd, \"", '>pipe', \*DIFF_OUT);
  if ($h) {
    local $/ = undef;
    print $temp_fh ;
    $h->finish();
    close($temp_fh);
  } else {
    close($temp_fh);
    unlink($temp_fn);
    fatal('500 Internal Error',
          'Checkout failure (exit status %s), output: 
%s
',
          $? >> 8 || -1, $err);
  }

  return $temp_fn;
}

#
# Close the GZIP handle, and remove the tie.
#
sub gzipclose
{
  if ($gzip_open) {
    select(STDOUT);
    close(GZIP);
    untie *GZIP;
    $gzip_open = 0;
  }
}

# implement a gzipped file handle via the Compress:Zlib compression
# library.

sub MAGIC1() { 0x1f }
sub MAGIC2() { 0x8b }
sub OSCODE() { 3 }

sub TIEHANDLE
{
  my ($class, $out) = @_;
  my ($d) = Compress::Zlib::deflateInit(
    -Level      => Compress::Zlib::Z_BEST_COMPRESSION(),
    -WindowBits => -Compress::Zlib::MAX_WBITS()
    )
    or return undef;
  my ($o) = { handle => $out,
              dh     => $d,
              crc    => 0,
              len    => 0,
            };
  my ($header) = pack("c10",
                      MAGIC1, MAGIC2, Compress::Zlib::Z_DEFLATED(),
                      0, 0, 0, 0, 0, 0, OSCODE);
  print {$o->{handle}} $header;
  return bless($o, $class);
}

sub PRINT
{
  my ($o)   = shift;
  my ($buf) = join (defined($,) ? $, : "", @_);
  my ($len) = length($buf);
  my ($compressed, $status) = $o->{dh}->deflate($buf);
  print {$o->{handle}} $compressed if defined($compressed);
  $o->{crc} = Compress::Zlib::crc32($buf, $o->{crc});
  $o->{len} += $len;
  return $len;
}

sub PRINTF
{
  my ($o)   = shift;
  my ($fmt) = shift;
  my ($buf) = sprintf($fmt, @_);
  my ($len) = length($buf);
  my ($compressed, $status) = $o->{dh}->deflate($buf);
  print {$o->{handle}} $compressed if defined($compressed);
  $o->{crc} = Compress::Zlib::crc32($buf, $o->{crc});
  $o->{len} += $len;
  return $len;
}

sub WRITE
{
  my ($o, $buf, $len, $off) = @_;
  my ($compressed, $status) = $o->{dh}->deflate(substr($buf, 0, $len));
  print {$o->{handle}} $compressed if defined($compressed);
  $o->{crc} = Compress::Zlib::crc32(substr($buf, 0, $len), $o->{crc});
  $o->{len} += $len;
  return $len;
}

sub CLOSE
{
  my ($o) = @_;
  return if !defined($o->{dh});
  my ($buf) = $o->{dh}->flush();
  $buf .= pack("V V", $o->{crc}, $o->{len});
  print {$o->{handle}} $buf;
  undef $o->{dh};
}

sub DESTROY
{
  my ($o) = @_;
  CLOSE($o);
}

# Local variables:
# indent-tabs-mode: nil
# cperl-indent-level: 2
# End: