/[pub]/test/html-webhacc/cc.cgi
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revision 1.4 by wakaba, Wed Jun 27 14:36:45 2007 UTC revision 1.57 by wakaba, Mon Jul 21 09:15:55 2008 UTC
# Line 1  Line 1 
1  #!/usr/bin/perl  #!/usr/bin/perl
2  use strict;  use strict;
3    use utf8;
4    
5  use lib qw[/home/httpd/html/www/markup/html/whatpm  use lib qw[/home/httpd/html/www/markup/html/whatpm
6             /home/wakaba/work/manakai/lib             /home/wakaba/work/manakai2/lib];
            /home/wakaba/public_html/-temp/wiki/lib];  
7  use CGI::Carp qw[fatalsToBrowser];  use CGI::Carp qw[fatalsToBrowser];
8  use Scalar::Util qw[refaddr];  use Scalar::Util qw[refaddr];
9    
10  use SuikaWiki::Input::HTTP; ## TODO: Use some better CGI module    require WebHACC::Input;
11      require WebHACC::Result;
12      require WebHACC::Output;
13    
14  sub htescape ($) {  my $out;
15    my $s = $_[0];  
16    $s =~ s/&/&/g;    require Message::DOM::DOMImplementation;
17    $s =~ s/</&lt;/g;    my $dom = Message::DOM::DOMImplementation->new;
18    $s =~ s/>/&gt;/g;  {
19    $s =~ s/"/&quot;/g;    use Message::CGI::HTTP;
20    $s =~ s!([\x00-\x09\x0B-\x1F\x7F-\x80])!sprintf '<var>U+%04X</var>', ord $1!ge;    my $http = Message::CGI::HTTP->new;
21    return $s;  
22  } # htescape    if ($http->get_meta_variable ('PATH_INFO') ne '/') {
23        print STDOUT "Status: 404 Not Found\nContent-Type: text/plain; charset=us-ascii\n\n400";
 my $http = SuikaWiki::Input::HTTP->new;  
   
 ## TODO: _charset_  
   
   my $input_format = $http->parameter ('i') || 'text/html';  
   my $inner_html_element = $http->parameter ('e');  
   my $input_uri = 'thismessage:/';  
   
   my $s = $http->parameter ('s');  
   if (length $s > 1000_000) {  
     print STDOUT "Status: 400 Document Too Long\nContent-Type: text/plain; charset=us-ascii\n\nToo long";  
24      exit;      exit;
25    }    }
26      
27      load_text_catalog ('en'); ## TODO: conneg
28    
29    my @nav;    $out = WebHACC::Output->new;
30    print STDOUT qq[Content-Type: text/html; charset=utf-8    $out->handle (*STDOUT);
31      $out->set_utf8;
32      $out->set_flush;
33      $out->html (qq[Content-Type: text/html; charset=utf-8
34    
35  <!DOCTYPE html>  <!DOCTYPE html>
36  <html lang="en">  <html lang="en">
# Line 43  my $http = SuikaWiki::Input::HTTP->new; Line 39  my $http = SuikaWiki::Input::HTTP->new;
39  <link rel="stylesheet" href="../cc-style.css" type="text/css">  <link rel="stylesheet" href="../cc-style.css" type="text/css">
40  </head>  </head>
41  <body>  <body>
42  <h1>Web Document Conformance Checker (<em>beta</em>)</h1>  <h1><a href="../cc-interface">Web Document Conformance Checker</a>
43    (<em>beta</em>)</h1>
44    ]);
45    
46  <div id="document-info" class="section">    my $input = get_input_document ($http, $dom);
 <dl>  
 <dt>Document URI</dt>  
     <dd><code class="URI" lang="">&lt;<a href="@{[htescape $input_uri]}">@{[htescape $input_uri]}</a>&gt;</code></dd>  
 <dt>Internet Media Type</dt>  
     <dd><code class="MIME" lang="en">@{[htescape $input_format]}</code></dd>  
 ]; # no </dl> yet  
   push @nav, ['#document-info' => 'Information'];  
47    
48    require Message::DOM::DOMImplementation;    $out->input ($input);
49    my $dom = Message::DOM::DOMImplementation->____new;    $out->unset_flush;
   my $doc;  
   my $el;  
   
   if ($input_format eq 'text/html') {  
     require Encode;  
     require Whatpm::HTML;  
       
     $s = Encode::decode ('utf-8', $s);  
   
     print STDOUT qq[  
 <dt>Character Encoding</dt>  
     <dd>(none)</dd>  
 </dl>  
 </div>  
   
 <div id="source-string" class="section">  
 <h2>Document Source</h2>  
 ];  
     push @nav, ['#source-string' => 'Source'];  
     print_source_string (\$s);  
     print STDOUT qq[  
 </div>  
   
 <div id="parse-errors" class="section">  
 <h2>Parse Errors</h2>  
   
 <dl>  
 ];  
   push @nav, ['#parse-errors' => 'Parse Error'];  
   
   my $onerror = sub {  
     my (%opt) = @_;  
     if ($opt{column} > 0) {  
       print STDOUT qq[<dt><a href="#line-$opt{line}">Line $opt{line}</a> column $opt{column}</dt>\n];  
     } else {  
       $opt{line}--;  
       print STDOUT qq[<dt><a href="#line-$opt{line}">Line $opt{line}</a></dt>\n];  
     }  
     print STDOUT qq[<dd>@{[htescape $opt{type}]}</dd>\n];  
   };  
50    
51    $doc = $dom->create_document;    my $result = WebHACC::Result->new;
52    if (defined $inner_html_element and length $inner_html_element) {    $result->output ($out);
53      $el = $doc->create_element_ns    $result->{conforming_min} = 1;
54          ('http://www.w3.org/1999/xhtml', [undef, $inner_html_element]);    $result->{conforming_max} = 1;
55      Whatpm::HTML->set_inner_html ($el, $s, $onerror);  
56    } else {    $out->html ('<script src="../cc-script.js"></script>');
57      Whatpm::HTML->parse_string ($s => $doc, $onerror);  
58      check_and_print ($input => $result => $out);
59      
60      $result->generate_result_section;
61    
62      $out->nav_list;
63    
64      exit;
65    }
66    
67    sub check_and_print ($$$) {
68      my ($input, $result, $out) = @_;
69      my $original_input = $out->input;
70      $out->input ($input);
71    
72      $input->generate_info_section ($result);
73    
74      $input->generate_transfer_sections ($result);
75    
76      unless (defined $input->{s}) {
77        $result->{conforming_min} = 0;
78        return;
79    }    }
80    
81    print STDOUT qq[    my $checker_class = {
82  </dl>      'text/cache-manifest' => 'WebHACC::Language::CacheManifest',
83  </div>      'text/css' => 'WebHACC::Language::CSS',
84  ];      'text/html' => 'WebHACC::Language::HTML',
85    } elsif ($input_format eq 'application/xhtml+xml') {      'text/x-webidl' => 'WebHACC::Language::WebIDL',
86      require Message::DOM::XMLParserTemp;  
87      require Encode;      'text/xml' => 'WebHACC::Language::XML',
88            'application/atom+xml' => 'WebHACC::Language::XML',
89      my $t = Encode::decode ('utf-8', $s);      'application/rss+xml' => 'WebHACC::Language::XML',
90        'image/svg+xml' => 'WebHACC::Language::XML',
91      print STDOUT qq[      'application/xhtml+xml' => 'WebHACC::Language::XML',
92  <dt>Character Encoding</dt>      'application/xml' => 'WebHACC::Language::XML',
93      <dd>(none)</dd>      ## TODO: Should we make all XML MIME Types fall
94  </dl>      ## into this category?
95  </div>  
96        ## NOTE: This type has different model from normal XML types.
97  <div id="source-string" class="section">      'application/rdf+xml' => 'WebHACC::Language::XML',
98  <h2>Document Source</h2>    }->{$input->{media_type}} || 'WebHACC::Language::Default';
99  ];  
100      push @nav, ['#source-string' => 'Source'];    eval qq{ require $checker_class } or die "$0: Loading $checker_class: $@";
101      print_source_string (\$t);    my $checker = $checker_class->new;
102      print STDOUT qq[    $checker->input ($input);
103  </div>    $checker->output ($out);
104      $checker->result ($result);
105  <div id="parse-errors" class="section">  
106  <h2>Parse Errors</h2>    ## TODO: A cache manifest MUST be text/cache-manifest
107      ## TODO: WebIDL media type "text/x-webidl"
108  <dl>  
109  ];    $checker->generate_syntax_error_section;
110    push @nav, ['#parse-errors' => 'Parse Error'];    $checker->generate_source_string_section;
111    
112    my $onerror = sub {    my @subdoc;
113      my $err = shift;    $checker->onsubdoc (sub {
114      my $line = $err->location->line_number;      push @subdoc, shift;
115      print STDOUT qq[<dt><a href="#line-$line">Line $line</a> column ];    });
116      print STDOUT $err->location->column_number, "</dt><dd>";  
117      print STDOUT htescape $err->text, "</dd>\n";    $checker->generate_structure_dump_section;
118      return 1;    $checker->generate_structure_error_section;
119    };    $checker->generate_additional_sections;
120    
121    open my $fh, '<', \$s;    my $id_prefix = 0;
122    $doc = Message::DOM::XMLParserTemp->parse_byte_stream    for my $_subinput (@subdoc) {
123        ($fh => $dom, $onerror, charset => 'utf-8');      my $subinput = WebHACC::Input::Subdocument->new (++$id_prefix);
124        $subinput->{$_} = $_subinput->{$_} for keys %$_subinput;
125      print STDOUT qq[      $subinput->{base_uri} = $subinput->{container_node}->base_uri
126  </dl>          unless defined $subinput->{base_uri};
127  </div>      $subinput->{parent_input} = $input;
128  ];  
129    } else {      $subinput->start_section ($result);
130      print STDOUT qq[      check_and_print ($subinput => $result => $out);
131  </dl>      $subinput->end_section ($result);
 </div>  
   
 <div id="result-summary" class="section">  
 <p><em>Media type <code class="MIME" lang="en">@{[htescape $input_format]}</code> is not supported!</em></p>  
 </div>  
 ];  
     push @nav, ['#result-summary' => 'Result'];  
132    }    }
133    
134      $out->input ($original_input);
135    } # check_and_print
136    
   if (defined $doc or defined $el) {  
     print STDOUT qq[  
 <div id="document-tree" class="section">  
 <h2>Document Tree</h2>  
 ];  
     push @nav, ['#document-tree' => 'Tree'];  
   
     print_document_tree ($el || $doc);  
   
     print STDOUT qq[  
 </div>  
   
 <div id="document-errors" class="section">  
 <h2>Document Errors</h2>  
   
 <dl>  
 ];  
     push @nav, ['#document-errors' => 'Document Error'];  
   
     require Whatpm::ContentChecker;  
     my $onerror = sub {  
       my %opt = @_;  
       print STDOUT qq[<dt><a href="#node-@{[refaddr $opt{node}]}">],  
           htescape get_node_path ($opt{node}),  
           "</a></dt>\n<dd>", htescape $opt{type}, "</dd>\n";  
     };  
137    
138      if ($el) {  {
139        Whatpm::ContentChecker->check_element ($el, $onerror);    my $Msg = {};
140      } else {  
141        Whatpm::ContentChecker->check_document ($doc, $onerror);  sub load_text_catalog ($) {
142    #  my $self = shift;
143      my $lang = shift; # MUST be a canonical lang name
144      open my $file, '<:utf8', "cc-msg.$lang.txt"
145          or die "$0: cc-msg.$lang.txt: $!";
146      while (<$file>) {
147        if (s/^([^;]+);([^;]*);//) {
148          my ($type, $cls, $msg) = ($1, $2, $_);
149          $msg =~ tr/\x0D\x0A//d;
150          $Msg->{$type} = [$cls, $msg];
151      }      }
152      }
153    } # load_text_catalog
154    
155      print STDOUT qq[  sub get_text ($;$$) {
156  </dl>  #  my $self = shift;
157  </div>    my ($type, $level, $node) = @_;
158  ];    $type = $level . ':' . $type if defined $level;
159    }    $level = 'm' unless defined $level;
160      my @arg;
161    ## TODO: Show result    {
162        if (defined $Msg->{$type}) {
163    print STDOUT qq[        my $msg = $Msg->{$type}->[1];
164  <ul class="navigation" id="nav-items">        $msg =~ s{<var>\$([0-9]+)</var>}{
165  ];          defined $arg[$1] ? ($arg[$1]) : '(undef)';
166    for (@nav) {        }ge;                 ##BUG: ^ must be escaped
167      print STDOUT qq[<li><a href="$_->[0]">$_->[1]</a></li>];        $msg =~ s{<var>{\@([A-Za-z0-9:_.-]+)}</var>}{
168    }          UNIVERSAL::can ($node, 'get_attribute_ns')
169    print STDOUT qq[              ?  ($node->get_attribute_ns (undef, $1)) : ''
170  </ul>        }ge; ## BUG: ^ must be escaped
171  </body>        $msg =~ s{<var>{\@}</var>}{        ## BUG: v must be escaped
172  </html>          UNIVERSAL::can ($node, 'value') ? ($node->value) : ''
173  ];        }ge;
174          $msg =~ s{<var>{local-name}</var>}{
175  exit;          UNIVERSAL::can ($node, 'manakai_local_name')
176              ? ($node->manakai_local_name) : ''
177  sub print_source_string ($) {        }ge;  ## BUG: ^ must be escaped
178    my $s = $_[0];        $msg =~ s{<var>{element-local-name}</var>}{
179    my $i = 1;          (UNIVERSAL::can ($node, 'owner_element') and
180    print STDOUT qq[<ol lang="">\n];           $node->owner_element)
181    while ($$s =~ /\G([^\x0A]*?)\x0D?\x0A/gc) {            ?  ($node->owner_element->manakai_local_name)
182      print STDOUT qq[<li id="line-$i">], htescape $1, "</li>\n";            : '' ## BUG: ^ must be escaped
183      $i++;        }ge;
184    }        return ($type, 'level-' . $level . ' ' . $Msg->{$type}->[0], $msg);
185    if ($$s =~ /\G([^\x0A]+)/gc) {      } elsif ($type =~ s/:([^:]*)$//) {
186      print STDOUT qq[<li id="line-$i">], htescape $1, "</li>\n";        unshift @arg, $1;
187    }        redo;
188    print STDOUT "</ol>";      }
189  } # print_input_string    }
190      return ($type, 'level-'.$level, ($_[0]));
191  sub print_document_tree ($) {                                   ## BUG: ^ must be escaped
192    my $node = shift;  } # get_text
193    my $r = '<ol class="xoxo">';  
194    }
195    my @node = ($node);  
196    while (@node) {  sub get_input_document ($$) {
197      my $child = shift @node;    my ($http, $dom) = @_;
198      unless (ref $child) {  
199        $r .= $child;    require Encode;
200        next;    my $request_uri = Encode::decode ('utf-8', $http->get_parameter ('uri'));
201      my $r = WebHACC::Input->new;
202      if (defined $request_uri and length $request_uri) {
203        my $uri = $dom->create_uri_reference ($request_uri);
204        unless ({
205                 http => 1,
206                }->{lc $uri->uri_scheme}) {
207          $r = WebHACC::Input::Error->new;
208          $r->{uri} = $request_uri;
209          $r->{request_uri} = $request_uri;
210          $r->{error_status_text} = 'URL scheme not allowed';
211      }      }
212    
213      my $node_id = 'node-'.refaddr $child;      require Message::Util::HostPermit;
214      my $nt = $child->node_type;      my $host_permit = new Message::Util::HostPermit;
215      if ($nt == $child->ELEMENT_NODE) {      $host_permit->add_rule (<<EOH);
216        my $child_nsuri = $child->namespace_uri;  Allow host=suika port=80
217        $r .= qq[<li id="$node_id" class="tree-element"><code title="@{[defined $child_nsuri ? $child_nsuri : '']}">] . htescape ($child->tag_name) .  Deny host=suika
218            '</code>'; ## ISSUE: case  Allow host=suika.fam.cx port=80
219    Deny host=suika.fam.cx
220        if ($child->has_attributes) {  Deny host=localhost
221          $r .= '<ul class="attributes">';  Deny host=*.localdomain
222          for my $attr (sort {$a->[0] cmp $b->[0]} map { [$_->name, $_->value, $_->namespace_uri, 'node-'.refaddr $_] }  Deny ipv4=0.0.0.0/8
223                        @{$child->attributes}) {  Deny ipv4=10.0.0.0/8
224            $r .= qq[<li id="$attr->[3]" class="tree-attribute"><code title="@{[defined $_->[2] ? $_->[2] : '']}">] . htescape ($attr->[0]) . '</code> = '; ## ISSUE: case?  Deny ipv4=127.0.0.0/8
225            $r .= '<q>' . htescape ($attr->[1]) . '</q></li>'; ## TODO: children  Deny ipv4=169.254.0.0/16
226          }  Deny ipv4=172.0.0.0/11
227          $r .= '</ul>';  Deny ipv4=192.0.2.0/24
228        }  Deny ipv4=192.88.99.0/24
229    Deny ipv4=192.168.0.0/16
230    Deny ipv4=198.18.0.0/15
231    Deny ipv4=224.0.0.0/4
232    Deny ipv4=255.255.255.255/32
233    Deny ipv6=0::0/0
234    Allow host=*
235    EOH
236        unless ($host_permit->check ($uri->uri_host, $uri->uri_port || 80)) {
237          my $r = WebHACC::Input::Error->new;
238          $r->{uri} = $request_uri;
239          $r->{request_uri} = $request_uri;
240          $r->{error_status_text} = 'Connection to the host is forbidden';
241          return $r;
242        }
243    
244        if ($node->has_child_nodes) {      require LWP::UserAgent;
245          $r .= '<ol class="children">';      my $ua = WDCC::LWPUA->new;
246          unshift @node, @{$child->child_nodes}, '</ol>';      $ua->{wdcc_dom} = $dom;
247        $ua->{wdcc_host_permit} = $host_permit;
248        $ua->agent ('Mozilla'); ## TODO: for now.
249        $ua->parse_head (0);
250        $ua->protocols_allowed ([qw/http/]);
251        $ua->max_size (1000_000);
252        my $req = HTTP::Request->new (GET => $request_uri);
253        $req->header ('Accept-Encoding' => 'identity, *; q=0');
254        my $res = $ua->request ($req);
255        ## TODO: 401 sets |is_success| true.
256        if ($res->is_success or $http->get_parameter ('error-page')) {
257          $r->{base_uri} = $res->base; ## NOTE: It does check |Content-Base|, |Content-Location|, and <base>. ## TODO: Use our own code!
258          $r->{uri} = $res->request->uri;
259          $r->{request_uri} = $request_uri;
260    
261          ## TODO: More strict parsing...
262          my $ct = $res->header ('Content-Type');
263          if (defined $ct and $ct =~ /;\s*charset\s*=\s*"?([^\s;"]+)"?/i) {
264            $r->{charset} = lc $1;
265            $r->{charset} =~ tr/\\//d;
266            $r->{official_charset} = $r->{charset};
267        }        }
268      } elsif ($nt == $child->TEXT_NODE) {  
269        $r .= qq'<li id="$node_id" class="tree-text"><q lang="">' . htescape ($child->data) . '</q></li>';        my $input_charset = $http->get_parameter ('charset');
270      } elsif ($nt == $child->CDATA_SECTION_NODE) {        if (defined $input_charset and length $input_charset) {
271        $r .= qq'<li id="$node_id" class="tree-cdata"><code>&lt;[CDATA[</code><q lang="">' . htescape ($child->data) . '</q><code>]]&gt;</code></li>';          $r->{charset_overridden}
272      } elsif ($nt == $child->COMMENT_NODE) {              = (not defined $r->{charset} or $r->{charset} ne $input_charset);
273        $r .= qq'<li id="$node_id" class="tree-comment"><code>&lt;!--</code><q lang="">' . htescape ($child->data) . '</q><code>--&gt;</code></li>';          $r->{charset} = $input_charset;
     } elsif ($nt == $child->DOCUMENT_NODE) {  
       $r .= qq'<li id="$node_id" class="tree-document">Document</li>';  
       if ($child->has_child_nodes) {  
         $r .= '<ol>';  
         unshift @node, @{$child->child_nodes}, '</ol>';  
274        }        }
275      } elsif ($nt == $child->DOCUMENT_TYPE_NODE) {  
276        $r .= qq'<li id="$node_id" class="tree-doctype"><code>&lt;!DOCTYPE&gt;</code><ul>';        ## TODO: Support for HTTP Content-Encoding
277        $r .= '<li class="tree-doctype-name">Name = <q>@{[htescape ($child->name)]}</q></li>';  
278        $r .= '<li class="tree-doctype-publicid">Public identifier = <q>@{[htescape ($child->public_id)]}</q></li>';        $r->{s} = ''.$res->content;
279        $r .= '<li class="tree-doctype-systemid">System identifier = <q>@{[htescape ($child->system_id)]}</q></li>';  
280        $r .= '</ul></li>';        require Whatpm::ContentType;
281      } elsif ($nt == $child->PROCESSING_INSTRUCTION_NODE) {        ($r->{official_type}, $r->{media_type})
282        $r .= qq'<li id="$node_id" class="tree-id"><code>&lt;?@{[htescape ($child->target)]}</code> <q>@{[htescape ($child->data)]}</q><code>?&gt;</code></li>';            = Whatpm::ContentType->get_sniffed_type
283                  (get_file_head => sub {
284                     return substr $r->{s}, 0, shift;
285                   },
286                   http_content_type_byte => $ct,
287                   has_http_content_encoding =>
288                       defined $res->header ('Content-Encoding'),
289                   supported_image_types => {});
290      } else {      } else {
291        $r .= qq'<li id="$node_id" class="tree-unknown">@{[$child->node_type]} @{[htescape ($child->node_name)]}</li>'; # error        $r->{uri} = $res->request->uri;
292          $r->{request_uri} = $request_uri;
293          $r->{error_status_text} = $res->status_line;
294      }      }
295    
296        $r->{header_field} = [];
297        $res->scan (sub {
298          push @{$r->{header_field}}, [$_[0], $_[1]];
299        });
300        $r->{header_status_code} = $res->code;
301        $r->{header_status_text} = $res->message;
302      } else {
303        $r->{s} = ''.$http->get_parameter ('s');
304        $r->{uri} = q<thismessage:/>;
305        $r->{request_uri} = q<thismessage:/>;
306        $r->{base_uri} = q<thismessage:/>;
307        $r->{charset} = ''.$http->get_parameter ('_charset_');
308        $r->{charset} =~ s/\s+//g;
309        $r->{charset} = 'utf-8' if $r->{charset} eq '';
310        $r->{official_charset} = $r->{charset};
311        $r->{header_field} = [];
312    
313        require Whatpm::ContentType;
314        ($r->{official_type}, $r->{media_type})
315            = Whatpm::ContentType->get_sniffed_type
316                (get_file_head => sub {
317                   return substr $r->{s}, 0, shift;
318                 },
319                 http_content_type_byte => undef,
320                 has_http_content_encoding => 0,
321                 supported_image_types => {});
322    }    }
323    
324    $r .= '</ol>';    my $input_format = $http->get_parameter ('i');
325    print STDOUT $r;    if (defined $input_format and length $input_format) {
326  } # print_document_tree      $r->{media_type_overridden}
327            = (not defined $r->{media_type} or $input_format ne $r->{media_type});
328  sub get_node_path ($) {      $r->{media_type} = $input_format;
329    my $node = shift;    }
330    my @r;    if (defined $r->{s} and not defined $r->{media_type}) {
331    while (defined $node) {      $r->{media_type} = 'text/html';
332      my $rs;      $r->{media_type_overridden} = 1;
333      if ($node->node_type == 1) {    }
334        $rs = $node->manakai_local_name;  
335        $node = $node->parent_node;    if ($r->{media_type} eq 'text/xml') {
336      } elsif ($node->node_type == 2) {      unless (defined $r->{charset}) {
337        $rs = '@' . $node->manakai_local_name;        $r->{charset} = 'us-ascii';
338        $node = $node->owner_element;        $r->{official_charset} = $r->{charset};
339      } elsif ($node->node_type == 3) {      } elsif ($r->{charset_overridden} and $r->{charset} eq 'us-ascii') {
340        $rs = '"' . $node->data . '"';        $r->{charset_overridden} = 0;
       $node = $node->parent_node;  
     } elsif ($node->node_type == 9) {  
       $rs = '';  
       $node = $node->parent_node;  
     } else {  
       $rs = '#' . $node->node_type;  
       $node = $node->parent_node;  
341      }      }
     unshift @r, $rs;  
342    }    }
343    return join '/', @r;  
344  } # get_node_path    if (length $r->{s} > 1000_000) {
345        $r->{error_status_text} = 'Entity-body too large';
346        delete $r->{s};
347        return $r;
348      }
349    
350      $r->{inner_html_element} = $http->get_parameter ('e');
351    
352      return $r;
353    } # get_input_document
354    
355    package WDCC::LWPUA;
356    BEGIN { push our @ISA, 'LWP::UserAgent'; }
357    
358    sub redirect_ok {
359      my $ua = shift;
360      unless ($ua->SUPER::redirect_ok (@_)) {
361        return 0;
362      }
363    
364      my $uris = $_[1]->header ('Location');
365      return 0 unless $uris;
366      my $uri = $ua->{wdcc_dom}->create_uri_reference ($uris);
367      unless ({
368               http => 1,
369              }->{lc $uri->uri_scheme}) {
370        return 0;
371      }
372      unless ($ua->{wdcc_host_permit}->check ($uri->uri_host, $uri->uri_port || 80)) {
373        return 0;
374      }
375      return 1;
376    } # redirect_ok
377    
378  =head1 AUTHOR  =head1 AUTHOR
379    
# Line 330  Wakaba <w@suika.fam.cx>. Line 381  Wakaba <w@suika.fam.cx>.
381    
382  =head1 LICENSE  =head1 LICENSE
383    
384  Copyright 2007 Wakaba <w@suika.fam.cx>  Copyright 2007-2008 Wakaba <w@suika.fam.cx>
385    
386  This library is free software; you can redistribute it  This library is free software; you can redistribute it
387  and/or modify it under the same terms as Perl itself.  and/or modify it under the same terms as Perl itself.
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