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wakaba |
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#!/usr/bin/perl |
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wakaba |
1.2 |
## NOTE: This script must not be called other than from mod_rewrite |
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wakaba |
1.1 |
use strict; |
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my $path = $ENV{QUERY_STRING}; |
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$path =~ s#^uri=##; |
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$path =~ s#,[^,]+$##; |
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$path =~ s/\#.*\z//s; |
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$path =~ s/\?.*\z//s; |
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wakaba |
1.2 |
$path = decode_path (canon_path ($path)); |
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wakaba |
1.1 |
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my $file; |
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wakaba |
1.2 |
if ($path =~ s#^/~(hero|wakaba|fuyu)/##) { |
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wakaba |
1.1 |
$file = qq'/home/$1/public_html/' . $path; |
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} else { |
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$file = '/home/httpd/html' . $path; |
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} |
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my $dir = $file; |
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my $file_name = ''; |
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$dir =~ s#/$##; |
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unless (-d $dir) { |
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$dir =~ s#/([^/]+)$##; |
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$file_name = $1 if -f $file; |
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} |
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my $cvsuri = ''; |
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if (-d $dir . '/CVS') { |
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if (-f $dir . '/CVS/Root') { |
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open my $root, '<', $dir . '/CVS/Root'; |
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## NOTE: Branch is not supported |
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if (<$root> =~ m#^(/home/cvs|/home/wakaba/pub/cvs)/?$#) { |
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my $rpath = $1; |
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if (-f $dir . '/CVS/Repository') { |
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open my $repo, '<', $dir . '/CVS/Repository'; |
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my $reppath = <$repo>; |
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$reppath =~ tr/\x0A\x0D//d; |
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if ($reppath) { |
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$cvsuri = qq{/gate/cvs/$reppath/$file_name@{[ |
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{q[/home/cvs] => '', |
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q[/home/wakaba/pub/cvs] => '?cvsroot=Wakaba'}->{$rpath} |
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]}}; |
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} |
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} |
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} |
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} |
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} |
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wakaba |
1.2 |
err_not_found () unless $cvsuri; |
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print "Status: 301 Found\n"; |
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print "Location: http://suika.fam.cx$cvsuri\n"; |
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print "\n"; |
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exit; |
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sub err_not_found { |
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print "Status: 404 Not Found\n"; |
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print "Content-Type: text/plain; charset=us-ascii\n"; |
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wakaba |
1.1 |
print "\n"; |
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wakaba |
1.2 |
print "Not found."; |
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wakaba |
1.1 |
exit; |
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} |
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wakaba |
1.2 |
sub decode_path ($) { |
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my $path = shift; |
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if ($path =~ /%2F/) { |
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err_not_found; |
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} |
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$path =~ s/%([0-9A-Fa-f][0-9A-Fa-f])/chr hex $1/ge; |
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if ($path =~ /[^\x21-\x7E]/) { |
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err_not_found; |
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} |
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$path; |
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} |
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sub canon_path ($) { |
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my $path = '/' . remove_dot_segments (shift or ''); |
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$path =~ s#//+#/#g; |
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$path; |
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} |
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sub remove_dot_segments ($) { |
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my $input = shift; |
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my @output; |
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wakaba |
1.3 |
$input =~ s/%2E/./g; ## No semantical side effect since "." is unreserved |
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wakaba |
1.2 |
while (length $input) { |
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if ($input =~ s#^\.\.?/##g or $input =~ s#^/\.(?:/|(?![^/]))#/#g) { |
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# |
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} elsif ($input =~ s#^/\.\.(?:/|(?![^/]))#/#) { |
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pop @output; |
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} elsif ($input eq '.' or $input eq '..') { |
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last; |
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} elsif ($input =~ s#^(/?[^/]*)##) { |
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push @output, $1; |
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} else { |
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die; |
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} |
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} |
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join '', @output; |
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} |
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