selfforum-cgi/shared/Posting/Write.pm

   1 package Posting::Write;
   2
   3 ################################################################################
   4 #                                                                              #
   5 # File:        shared/Posting/Write.pm                                         #
   6 #                                                                              #
   7 # Authors:     André Malo <nd@o3media.de>, 2001-04-08                          #
   8 #                                                                              #
   9 # Description: Save a posting                                                  #
  10 #                                                                              #
  11 ################################################################################
  12
  13 use strict;
  14 use vars qw(%error @EXPORT);
  15
  16 use Encode::Plain; $Encode::Plain::utf8 = 1;
  17 use Encode::Posting;
  18 use Lock qw(
  19   :WRITE
  20   release_file
  21 );
  22 use Posting::_lib qw(
  23   get_message_node
  24   get_message_header
  25   create_forum_xml_string
  26   create_new_thread
  27   create_message
  28   save_file
  29   parse_xml_file
  30   KEEP_DELETED
  31 );
  32
  33 use XML::DOM;
  34
  35 %error = (
  36   threadWrite => '1 could not write thread file',
  37   forumWrite  => '2 could not write forum file',
  38   threadFile  => '3 could not load thread file',
  39   noParent    => '4 could not find parent message'
  40 );
  41
  42 ################################################################################
  43 #
  44 # Export
  45 #
  46 use base qw(Exporter);
  47 @EXPORT = qw(
  48   write_new_thread
  49   write_reply_posting
  50 );
  51
  52 ### sub write_new_thread ($) ###################################################
  53 #
  54 # save a posting and update the forum main file
  55 #
  56 # Params: $param - hashreference
  57 #                  (see doc for details)
  58 #
  59 # Return: (0 or error, thread-xml, new mid)
  60 #
  61 sub write_new_thread ($) {
  62   my $param = shift;
  63   my $thread;
  64   my $mid   = 'm'.($param -> {lastMessage} + 1);
  65   my $tid   = 't'.($param -> {lastThread} + 1);
  66
  67   # define the params needed for a new thread
  68   #
  69   my $pars = {
  70     msg      => $mid,
  71     ip       => $param -> {ip},
  72     name     => defined $param -> {author}   ? $param -> {author}   : '',
  73     email    => defined $param -> {email}    ? $param -> {email}    : '',
  74     home     => defined $param -> {homepage} ? $param -> {homepage} : '',
  75     image    => defined $param -> {image}    ? $param -> {image}    : '',
  76     category => defined $param -> {category} ? $param -> {category} : '',
  77     subject  => defined $param -> {subject}  ? $param -> {subject}  : '',
  78     body     => encoded_body(
  79       \($param -> {body}),
  80       { quoteChars => $param -> {quoteChars},
  81         messages   => $param -> {messages},
  82         base_uri   => $param -> {base_uri}
  83       }
  84     ),
  85     time     => $param -> {time},
  86     dtd      => $param -> {dtd},
  87     thread   => $tid
  88   };
  89
  90   # create new thread and save it to disk
  91   #
  92   $thread = create_new_thread ($pars);
  93   save_file ($param -> {messagePath}.$tid.'.xml',\($thread -> toString)) or return $error{threadWrite};
  94
  95   # update forum main file
  96   #
  97   $param
  98     -> {parsedThreads}
  99     -> {$param -> {lastThread} + 1} = [
 100         { mid     => $param -> {lastMessage} + 1,
 101           unid    => $param -> {uniqueID},
 102           name    => plain($pars -> {name}),
 103           cat     => plain($pars -> {category}),
 104           subject => plain($pars -> {subject}),
 105           time    => plain($pars -> {time}),
 106           level   => 0,
 107         }
 108        ];
 109
 110   my $forum = create_forum_xml_string (
 111     $param -> {parsedThreads},
 112     { dtd         => $pars -> {dtd},
 113       lastMessage => $mid,
 114       lastThread  => $tid
 115     }
 116   );
 117
 118   save_file ($param -> {forumFile}, $forum) or return $error{forumWrite};
 119   release_file ($param -> {messagePath}.$tid.'.xml');
 120   return (0, $thread, $mid);
 121 }
 122
 123 ### sub write_reply_posting ($) ################################################
 124 #
 125 # save a reply and update the forum main file
 126 #
 127 # Params: $param - hashreference
 128 #                  (see doc for details)
 129 #
 130 # Return: (0 or error, thread-xml, new mid)
 131 #
 132 sub write_reply_posting ($) {
 133   my $param = shift;
 134   my $thread;
 135   my $mid   = 'm'.($param -> {lastMessage} + 1);
 136   my $tid   = 't'.($param -> {thread});
 137
 138   my $tfile = $param -> {messagePath}.$tid.'.xml';
 139
 140   unless (write_lock_file ($tfile)) {
 141     violent_unlock_file ($tfile);
 142     return $error{threadFile};
 143   }
 144
 145   else {
 146     my $xml = parse_xml_file ($tfile);
 147
 148     unless ($xml) {
 149       violent_unlock_file ($tfile) unless (write_unlock_file ($tfile));
 150       return $error{threadFile};
 151     }
 152
 153     my $mnode = get_message_node ($xml, $tid, 'm'.$param -> {parentMessage});
 154
 155     unless (defined $mnode) {
 156       violent_unlock_file ($tfile) unless (write_unlock_file ($tfile));
 157       return $error{noParent};
 158     }
 159
 160     my $pars = {
 161       msg      => $mid,
 162       ip       => $param -> {ip},
 163       name     => defined $param -> {author}   ? $param -> {author}   :'',
 164       email    => defined $param -> {email}    ? $param -> {email}    :'',
 165       home     => defined $param -> {homepage} ? $param -> {homepage} :'',
 166       image    => defined $param -> {image}    ? $param -> {image}    :'',
 167       category => defined $param -> {category} ? $param -> {category} :'',
 168       subject  => defined $param -> {subject}  ? $param -> {subject}  :'',
 169       time     => $param -> {time},
 170     };
 171
 172     my $message = create_message ($xml, $pars);
 173
 174     $mnode -> appendChild ($message);
 175
 176     my $mcontent = $xml -> createElement ('MessageContent');
 177     $mcontent -> setAttribute ('mid' => $mid);
 178     $mcontent -> appendChild (
 179       $xml -> createCDATASection (
 180         ${encoded_body(
 181           \($param -> {body}),
 182           { quoteChars => $param -> {quoteChars},
 183             messages   => $param -> {messages},
 184             base_uri   => $param -> {base_uri}
 185           }
 186         )}
 187       )
 188     );
 189
 190     my $content = $xml -> getElementsByTagName ('ContentList', 1) -> item (0);
 191        $content -> appendChild ($mcontent);
 192
 193     # save thread file
 194     #
 195     unless (save_file ($tfile, \($xml -> toString))) {
 196       violent_unlock_file ($tfile) unless (write_unlock_file ($tfile));
 197       return $error{threadWrite};
 198     }
 199
 200     violent_unlock_file ($tfile) unless (write_unlock_file ($tfile));
 201
 202     $thread = $xml;
 203
 204     # add message to thread tree
 205     # ATTENTION: don't use the tree for visual output after this operation
 206     #
 207     my $i=1;
 208     for (@{$param -> {parsedThreads} -> {$param -> {thread}}}) {
 209       if ($_ -> {mid} == $param -> {parentMessage}) {
 210         splice @{
 211           $param -> {parsedThreads} -> {$param -> {thread}}},$i, 0,
 212           { mid     => $param -> {lastMessage} + 1,
 213             unid    => plain ($param -> {uniqueID}),
 214             name    => plain ($pars -> {name}),
 215             cat     => plain ($pars -> {category}),
 216             subject => plain ($pars -> {subject}),
 217             level   => $_ -> {level} + 1,
 218             time    => plain ($pars -> {time})
 219           };
 220         last;
 221       }
 222       $i++;
 223     }
 224
 225     # create & save forum main file
 226     #
 227     my $forum = create_forum_xml_string (
 228       $param -> {parsedThreads},
 229       { dtd         => $param -> {dtd},
 230         lastMessage => $mid,
 231         lastThread  => $tid
 232       }
 233     );
 234
 235     save_file ($param -> {forumFile}, $forum) or return $error{forumWrite};
 236   }
 237
 238   return (0, $thread, $mid);
 239 }
 240
 241 # keep 'require' happy
 242 #
 243 1;
 244
 245 #
 246 #
 247 ### end of Posting::Write ######################################################