cgi/html.cgi

   1 #!/usr/bin/perl
   2 # (c) Petr Baudis <pasky@suse.cz>
   3 # Portions Copyright (c) Kyle J. McKay <mackyle@gmail.com>
   4 # GPLv2
   5
   6 use strict;
   7 use warnings;
   8
   9 use Digest::MD5 qw(md5_hex);
  10
  11 use lib ".";
  12 use Girocco::CGI;
  13 use Girocco::Config;
  14 use Girocco::Util;
  15
  16 BEGIN {
  17         eval {
  18                 require Digest::SHA;
  19                 Digest::SHA->import(
  20                         qw(sha1_hex)
  21         );1} ||
  22         eval {
  23                 require Digest::SHA1;
  24                 Digest::SHA1->import(
  25                         qw(sha1_hex)
  26         );1} ||
  27         eval {
  28                 require Digest::SHA::PurePerl;
  29                 Digest::SHA::PurePerl->import(
  30                         qw(sha1_hex)
  31         );1} ||
  32         die "One of Digest::SHA or Digest::SHA1 or Digest::SHA::PurePerl "
  33         . "must be available\n";
  34 }
  35
  36 # Ultra-trivial templating engine;
  37 # /^@section=SECTION
  38 # /^@heading=HEADING
  39 # /^@header                     produces HTML header based on @section and @heading
  40 # /@@gitweburl@@/               substitute for gitweburl configuration variable
  41 # /@@base(gitweburl)@@/         substitute for base portion of gitweburl variable
  42 # /@@path(gitweburl)@@/         substitute for path portion of gitweburl variable
  43 # /@@server(gitweburl)@@/       replace scheme://host:port portion of gitweburl variable
  44 # /@@md5(relpath)@@/            produces MD5 hex of file in DOCUMENT_ROOT at relpath
  45 # /@@sha1(relpath)@@/           produces SHA1 hex of file in DOCUMENT_ROOT at relpath
  46 # /@@blob(relpath)@@/           produces git hash-object -t blob of file in DOCUMENT_ROOT
  47 # /@@ifmob@@...@@end@@/         remove unless mob defined
  48 # /@@ifssh@@...@@end@@/         remove unless pushurl defined
  49 # /@@ifhttps@@...@@end@@/       remove unless httpspushurl defined
  50
  51 my $pathinfo = $ENV{PATH_INFO} || '';
  52 my $docroot = $ENV{DOCUMENT_ROOT} || '';
  53 $pathinfo =~ s,^/,,;
  54 unless ($pathinfo) {
  55         my $gcgi = Girocco::CGI->new('HTML Templater');
  56         print "<p>Hi, this is your friendly HTML templater speaking. Pass me template name.</p>\n";
  57         exit;
  58 }
  59
  60 my $templatefd;
  61 unless ($pathinfo !~ m#\./# and open($templatefd, '<', "$Girocco::Config::basedir/html/$pathinfo")) {
  62         my $gcgi = Girocco::CGI->new('HTML Templater');
  63         print "<p>Invalid template name.</p>\n";
  64         exit;
  65 }
  66
  67 if ($pathinfo =~ /\.(png|jpe?g|gif|svgz?)$/) {
  68         my $kind = $1;
  69         $kind = 'jpeg' if $kind eq 'jpg';
  70         $kind = 'svg+xml' if $kind =~ /^svg/;
  71         print "Content-type: image/$kind\n\n";
  72         my $buf;
  73         while (read($templatefd, $buf, 32768)) {
  74                 print $buf;
  75         }
  76         exit;
  77 }
  78
  79 sub get_file_hash {
  80         my ($hash, $fn) = @_;
  81         return '' unless $docroot && $docroot ne '/' && -d $docroot;
  82         return '' if $hash ne 'md5' && $hash ne 'sha1' && $hash ne 'blob';
  83         return '' if !$fn || $fn =~ m|^[./]| || $fn =~ m|[.]/| || $fn =~ m|/[.]|;
  84         return '' unless -f "$docroot/$fn";
  85         open(HASHFILE, '<', "$docroot/$fn") or return '';
  86         local $/;
  87         undef $/;
  88         my $contents = <HASHFILE>;
  89         close(HASHFILE);
  90         $hash eq 'blob' and $contents = sprintf("blob %u\0", length($contents)) . $contents;
  91         return $hash eq 'md5' ? md5_hex($contents) : sha1_hex($contents);
  92 }
  93
  94 my ($gcgi, $section, $heading);
  95
  96 my $template=join('', map(to_utf8($_, 1), <$templatefd>));
  97 close $templatefd;
  98 $template =~ s/@\@ifmob@\@(.*?)@\@end@\@/$Girocco::Config::mob?$1:''/ges;
  99 $template =~ s/@\@ifssh@\@(.*?)@\@end@\@/$Girocco::Config::pushurl?$1:''/ges;
 100 $template =~ s/@\@ifhttps@\@(.*?)@\@end@\@/$Girocco::Config::httpspushurl?$1:''/ges;
 101
 102 foreach (split(/\n/, $template)) {
 103         chomp;
 104         if (s/^\@section=//) {
 105                 $section = $_;
 106                 next;
 107         } elsif (s/^\@heading=//) {
 108                 $heading = $_;
 109                 next;
 110         } elsif (s/^\@header//) {
 111                 $gcgi = Girocco::CGI->new($heading, $section);
 112                 print "<div class=\"htmlcgi\">";
 113                 next;
 114         } else {
 115                 s/@@(\w+?)@@/${$Girocco::Config::{$1}}/ge;
 116                 s/@\@base\((\w+?)\)@@/url_base(${$Girocco::Config::{$1}})/ge;
 117                 s/@\@path\((\w+?)\)@@/url_path(${$Girocco::Config::{$1}})/ge;
 118                 s/@\@server\((\w+?)\)@@/url_server(${$Girocco::Config::{$1}})/ge;
 119                 s/@\@(md5|sha1|blob)\(([^()]+?)\)@@/get_file_hash($1,$2)/ge;
 120                 print "$_\n";
 121         }
 122 }
 123 print "</div>";
 124 $gcgi and $gcgi->srcname("html/$pathinfo");