includes/SpecialUndelete.php

   1 <?
   2
   3 function wfSpecialUndelete( $par )
   4 {
   5     global $wgLang, $wgUser, $wgOut, $action, $target, $timestamp, $restore;
   6
   7         if( $par != "" ) $target = $par;
   8     if( isset($target ) ) {
   9         $t = Title::newFromURL( $target );
  10         $title = $t->mDbkeyform;
  11         $namespace = $t->mNamespace;
  12         if( isset( $timestamp ) ) {
  13                 return doUndeleteShowRevision( $namespace, $title, $timestamp );
  14         }
  15         if( isset( $action ) and isset( $restore) and $action == "submit" ) {
  16                 return doUndeleteArticle( $namespace, $title );
  17         }
  18         return doUndeleteShowHistory( $namespace, $title );
  19     }
  20
  21     # List undeletable articles
  22     $sql = "SELECT ar_namespace,ar_title, COUNT(*) AS count FROM archive GROUP BY ar_namespace,ar_title ORDER BY ar_namespace,ar_title";
  23     $res = wfQuery( $sql, DB_READ );
  24
  25         $wgOut->setPagetitle( wfMsg( "undeletepage" ) );
  26         $wgOut->addWikiText( wfMsg( "undeletepagetext" ) );
  27
  28     $special = $wgLang->getNsText( Namespace::getSpecial() );
  29     $sk = $wgUser->getSkin();
  30     $wgOut->addHTML( "<ul>\n" );
  31     while ($row = wfFetchObject( $res )) {
  32         $n = ($row->ar_namespace ?
  33                 ($wgLang->getNsText( $row->ar_namespace ) . ":") : "").
  34                 $row->ar_title;
  35
  36         $wgOut->addHTML( "<li>" .
  37           $sk->makeKnownLink( $wgLang->specialPage( "Undelete" ),
  38           $n, "target=" . urlencode($n) ) . " " .
  39                   wfMsg( "undeleterevisions", $row->count ) );
  40     }
  41     $wgOut->addHTML( "</ul>\n" );
  42
  43     return $ret;
  44 }
  45
  46 /* private */ function doUndeleteShowRevision( $namespace, $title, $timestamp ) {
  47     global $wgLang, $wgUser, $wgOut, $action, $target, $timestamp, $restore;
  48
  49     if(!preg_match("/[0-9]{14}/",$timestamp)) return 0;
  50
  51     $sql = "SELECT ar_text FROM archive WHERE ar_namespace={$namespace} AND ar_title=\"{$title}\" AND ar_timestamp={$timestamp}";
  52     $ret = wfQuery( $sql, DB_READ );
  53     $row = wfFetchObject( $ret );
  54
  55     $wgOut->setPagetitle( wfMsg( "undeletepage" ) );
  56     $wgOut->addWikiText( "(" . wfMsg( "undeleterevision", $wgLang->date($timestamp, true) )
  57       . ")\n<hr>\n" . $row->ar_text );
  58
  59         return 0;
  60 }
  61
  62 /* private */ function doUndeleteShowHistory( $namespace, $title ) {
  63     global $wgLang, $wgUser, $wgOut, $action, $target, $timestamp, $restore;
  64
  65     $sk = $wgUser->getSkin();
  66     $wgOut->setPagetitle( wfMsg( "undeletepage" ) );
  67     $wgOut->addWikiText( wfMsg( "undeletehistory" ) . "\n<hr>\n" . $row->ar_text );
  68
  69         $action = wfLocalUrlE( $wgLang->specialPage( "Undelete" ), "action=submit" );
  70         $wgOut->addHTML("<p>
  71 <form id=\"undelete\" method=\"post\" action=\"{$action}\">
  72 <input type=hidden name=\"target\" value=\"{$target}\">
  73 <input type=submit name=\"restore\" value=\"".wfMsg("undeletebtn")."\">
  74 </form>");
  75
  76     $log = wfGetSQL("cur", "cur_text", "cur_namespace=4 AND cur_title=\"".wfMsg("dellogpage")."\"" );
  77     if(preg_match("/^(.*".
  78         preg_quote( ($namespace ? ($wgLang->getNsText($namespace) . ":") : "")
  79         . str_replace("_", " ", $title), "/" ).".*)$/m", $log, $m)) {
  80         $wgOut->addWikiText( $m[1] );
  81     }
  82
  83     $sql = "SELECT ar_minor_edit,ar_timestamp,ar_user,ar_user_text,ar_comment
  84       FROM archive WHERE ar_namespace={$namespace} AND ar_title=\"{$title}\"
  85       ORDER BY ar_timestamp DESC";
  86     $ret = wfQuery( $sql, DB_READ );
  87
  88     $special = $wgLang->getNsText( Namespace::getSpecial() );
  89     $wgOut->addHTML("<ul>");
  90     while( $row = wfFetchObject( $ret ) ) {
  91         $wgOut->addHTML( "<li>" .
  92           $sk->makeKnownLink( $wgLang->specialPage( "Undelete" ),
  93           $wgLang->timeanddate( $row->ar_timestamp, true ),
  94           "target=" . urlencode($target) . "&timestamp={$row->ar_timestamp}" ) . " " .
  95           ". . {$row->ar_user_text}" .
  96           " <i>(" . htmlspecialchars($row->ar_comment) . "</i>)\n");
  97
  98     }
  99     $wgOut->addHTML("</ul>");
 100
 101         return 0;
 102 }
 103
 104 /* private */ function doUndeleteArticle( $namespace, $title )
 105         {
 106                 global $wgUser, $wgOut, $wgLang, $target, $wgDeferredUpdateList;
 107
 108                 $fname = "doUndeleteArticle";
 109
 110                 if ( "" == $title ) {
 111                         $wgOut->fatalError( wfMsg( "cannotundelete" ) );
 112                         return;
 113                 }
 114                 $t = addslashes($title);
 115
 116                 # Move article and history from the "archive" table
 117                 $sql = "SELECT COUNT(*) AS count FROM cur WHERE cur_namespace={$namespace} AND cur_title='{$t}'";
 118                 $res = wfQuery( $sql, DB_READ );
 119                 $row = wfFetchObject( $res );
 120                 if( $row->count == 0) {
 121                         # Have to create new article...
 122                         $now = wfTimestampNow();
 123                         $max = wfGetSQL( "archive", "MAX(ar_timestamp)", "ar_namespace={$namespace} AND ar_title='{$t}'" );
 124                 $sql = "INSERT INTO cur (cur_namespace,cur_title,cur_text," .
 125                           "cur_comment,cur_user,cur_user_text,cur_timestamp,inverse_timestamp,cur_minor_edit,cur_random,cur_touched)" .
 126                           "SELECT ar_namespace,ar_title,ar_text,ar_comment," .
 127                           "ar_user,ar_user_text,ar_timestamp,99999999999999-ar_timestamp,ar_minor_edit,RAND(),'{$now}' FROM archive " .
 128                           "WHERE ar_namespace={$namespace} AND ar_title='{$t}' AND ar_timestamp={$max}";
 129                         wfQuery( $sql, DB_WRITE, $fname );
 130                 $newid = wfInsertId();
 131                         $oldones = "AND ar_timestamp<{$max}";
 132                 } else {
 133                         # If already exists, put history entirely into old table
 134                         $oldones = "";
 135                         $newid = 0;
 136                 }
 137
 138                 $sql = "INSERT INTO old (old_namespace,old_title,old_text," .
 139                   "old_comment,old_user,old_user_text,old_timestamp,inverse_timestamp,old_minor_edit," .
 140                   "old_flags) SELECT ar_namespace,ar_title,ar_text,ar_comment," .
 141                   "ar_user,ar_user_text,ar_timestamp,99999999999999-ar_timestamp,ar_minor_edit,ar_flags " .
 142                   "FROM archive WHERE ar_namespace={$namespace} AND ar_title='{$t}' {$oldones}";
 143                 wfQuery( $sql, DB_WRITE, $fname );
 144
 145         # Finally, clean up the link tables
 146                 if( $newid ) {
 147                         # Create a dummy OutputPage to update the outgoing links
 148                         # This works at the moment due to good luck. It may stop working in the
 149                         # future. Damn globals.
 150                         $dummyOut = new OutputPage();
 151                         $to = Title::newFromDBKey( $target );
 152                         $res = wfQuery( "SELECT cur_text FROM cur WHERE cur_id={$newid} " .
 153                           "AND cur_namespace={$namespace}", DB_READ, $fname );
 154                         $row = wfFetchObject( $res );
 155                         $text = $row->cur_text;
 156                         $dummyOut->addWikiText( $text );
 157                         wfFreeResult( $res );
 158
 159                         $u = new LinksUpdate( $newid, $to->getPrefixedDBkey() );
 160                         array_push( $wgDeferredUpdateList, $u );
 161
 162                         global $wgEnablePersistentLC;
 163                         if ( $wgEnablePersistentLC ) {
 164                                 // Purge related entries in links cache on undelete, to heal broken links
 165                                 $ptitle = wfStrencode( $to->getPrefixedDBkey() );
 166                                 wfQuery("DELETE linkscc FROM linkscc,brokenlinks ".
 167                                         "WHERE lcc_pageid=bl_from AND bl_to='{$ptitle}'", DB_WRITE);
 168                         }
 169                         #TODO: SearchUpdate, etc.
 170                 }
 171
 172                 # Now that it's safely stored, take it out of the archive
 173                 $sql = "DELETE FROM archive WHERE ar_namespace={$namespace} AND " .
 174                   "ar_title='{$t}'";
 175                 wfQuery( $sql, DB_WRITE, $fname );
 176
 177
 178                 # Touch the log?
 179                 $log = new LogPage( wfMsg( "dellogpage" ), wfMsg( "dellogpagetext" ) );
 180                 $log->addEntry( wfMsg( "undeletedarticle", $target ), "" );
 181
 182                 $wgOut->addWikiText( wfMsg( "undeletedtext", $target ) );
 183                 return 0;
 184         }
 185 ?>