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_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           str_replace( '$1', $row->count, wfMsg( "undeleterevisions" )) );
  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( "(" . str_replace("$1",
  57       $wgLang->date($timestamp, true), wfMsg( "undeleterevision" ))
  58       . ")\n<hr>\n" . $row->ar_text );
  59
  60         return 0;
  61 }
  62
  63 /* private */ function doUndeleteShowHistory( $namespace, $title ) {
  64     global $wgLang, $wgUser, $wgOut, $action, $target, $timestamp, $restore;
  65
  66     $sk = $wgUser->getSkin();
  67     $wgOut->setPagetitle( wfMsg( "undeletepage" ) );
  68     $wgOut->addWikiText( wfMsg( "undeletehistory" ) . "\n<hr>\n" . $row->ar_text );
  69
  70         $action = wfLocalUrlE( $wgLang->specialPage( "Undelete" ), "action=submit" );
  71         $wgOut->addHTML("<p>
  72 <form id=\"undelete\" method=\"post\" action=\"{$action}\">
  73 <input type=hidden name=\"target\" value=\"{$target}\">
  74 <input type=submit name=\"restore\" value=\"".wfMsg("undeletebtn")."\">
  75 </form>");
  76
  77     $log = wfGetSQL("cur", "cur_text", "cur_namespace=4 AND cur_title=\"".wfMsg("dellogpage")."\"" );
  78     if(preg_match("/^(.*".
  79         preg_quote( ($namespace ? ($wgLang->getNsText($namespace) . ":") : "")
  80         . str_replace("_", " ", $title), "/" ).".*)$/m", $log, $m)) {
  81         $wgOut->addWikiText( $m[1] );
  82     }
  83
  84     $sql = "SELECT ar_minor_edit,ar_timestamp,ar_user,ar_user_text,ar_comment
  85       FROM archive WHERE ar_namespace={$namespace} AND ar_title=\"{$title}\"
  86       ORDER BY ar_timestamp DESC";
  87     $ret = wfQuery( $sql, DB_READ );
  88
  89     $special = $wgLang->getNsText( Namespace::getSpecial() );
  90     $wgOut->addHTML("<ul>");
  91     while( $row = wfFetchObject( $ret ) ) {
  92         $wgOut->addHTML( "<li>" .
  93           $sk->makeKnownLink( $wgLang->specialPage( "Undelete" ),
  94           $wgLang->timeanddate( $row->ar_timestamp, true ),
  95           "target=" . urlencode($target) . "&timestamp={$row->ar_timestamp}" ) . " " .
  96           ". . {$row->ar_user_text}" .
  97           " <i>(" . htmlspecialchars($row->ar_comment) . "</i>)\n");
  98
  99     }
 100     $wgOut->addHTML("</ul>");
 101
 102         return 0;
 103 }
 104
 105 /* private */ function doUndeleteArticle( $namespace, $title )
 106         {
 107                 global $wgUser, $wgOut, $wgLang, $target, $wgDeferredUpdateList;
 108
 109                 $fname = "doUndeleteArticle";
 110
 111                 if ( "" == $title ) {
 112                         $wgOut->fatalError( wfMsg( "cannotundelete" ) );
 113                         return;
 114                 }
 115                 $t = addslashes($title);
 116
 117                 # Move article and history from the "archive" table
 118                 $sql = "SELECT COUNT(*) AS count FROM cur WHERE cur_namespace={$namespace} AND cur_title='{$t}'";
 119                 $res = wfQuery( $sql, DB_READ );
 120                 $row = wfFetchObject( $res );
 121                 if( $row->count == 0) {
 122                         # Have to create new article...
 123                         $now = wfTimestampNow();
 124                         $max = wfGetSQL( "archive", "MAX(ar_timestamp)", "ar_namespace={$namespace} AND ar_title='{$t}'" );
 125                 $sql = "INSERT INTO cur (cur_namespace,cur_title,cur_text," .
 126                           "cur_comment,cur_user,cur_user_text,cur_timestamp,inverse_timestamp,cur_minor_edit,cur_random,cur_touched)" .
 127                           "SELECT ar_namespace,ar_title,ar_text,ar_comment," .
 128                           "ar_user,ar_user_text,ar_timestamp,99999999999999-ar_timestamp,ar_minor_edit,RAND(),'{$now}' FROM archive " .
 129                           "WHERE ar_namespace={$namespace} AND ar_title='{$t}' AND ar_timestamp={$max}";
 130                         wfQuery( $sql, DB_WRITE, $fname );
 131                 $newid = wfInsertId();
 132                         $oldones = "AND ar_timestamp<{$max}";
 133                 } else {
 134                         # If already exists, put history entirely into old table
 135                         $oldones = "";
 136                         $newid = 0;
 137                 }
 138
 139                 $sql = "INSERT INTO old (old_namespace,old_title,old_text," .
 140                   "old_comment,old_user,old_user_text,old_timestamp,inverse_timestamp,old_minor_edit," .
 141                   "old_flags) SELECT ar_namespace,ar_title,ar_text,ar_comment," .
 142                   "ar_user,ar_user_text,ar_timestamp,99999999999999-ar_timestamp,ar_minor_edit,ar_flags " .
 143                   "FROM archive WHERE ar_namespace={$namespace} AND ar_title='{$t}' {$oldones}";
 144                 wfQuery( $sql, DB_WRITE, $fname );
 145
 146         # Finally, clean up the link tables
 147                 if( $newid ) {
 148                         # Create a dummy OutputPage to update the outgoing links
 149                         # This works at the moment due to good luck. It may stop working in the
 150                         # future. Damn globals.
 151                         $dummyOut = new OutputPage();
 152                         $to = Title::newFromDBKey( $target );
 153                         $res = wfQuery( "SELECT cur_text FROM cur WHERE cur_id={$newid} " .
 154                           "AND cur_namespace={$namespace}", DB_READ, $fname );
 155                         $row = wfFetchObject( $res );
 156                         $text = $row->cur_text;
 157                         $dummyOut->addWikiText( $text );
 158                         wfFreeResult( $res );
 159
 160                         $u = new LinksUpdate( $newid, $to->getPrefixedDBkey() );
 161                         array_push( $wgDeferredUpdateList, $u );
 162
 163                         #TODO: SearchUpdate, etc.
 164                 }
 165
 166                 # Now that it's safely stored, take it out of the archive
 167                 $sql = "DELETE FROM archive WHERE ar_namespace={$namespace} AND " .
 168                   "ar_title='{$t}'";
 169                 wfQuery( $sql, DB_WRITE, $fname );
 170
 171
 172                 # Touch the log?
 173                 $log = new LogPage( wfMsg( "dellogpage" ), wfMsg( "dellogpagetext" ) );
 174                 $log->addEntry( wfMsg( "undeletedarticle", $target ), "" );
 175
 176                 $wgOut->addwikitext(str_replace("$1", $target, wfmsg("undeletedtext")));
 177                 return 0;
 178         }
 179 ?>