includes/SpecialUndelete.php

   1 <?
   2
   3 function wfSpecialUndelete( )
   4 {
   5     global $wgLang, $wgUser, $wgOut, $action, $target, $timestamp, $restore;
   6
   7     if( isset($target ) ) {
   8         $t = Title::newFromURL( $target );
   9         $title = $t->mDbkeyform;
  10         $namespace = $t->mNamespace;
  11         if( isset( $timestamp ) ) {
  12                 return doUndeleteShowRevision( $namespace, $title, $timestamp );
  13         }
  14         if( isset( $action ) and isset( $restore) and $action == "submit" ) {
  15                 return doUndeleteArticle( $namespace, $title );
  16         }
  17         return doUndeleteShowHistory( $namespace, $title );
  18     }
  19
  20     # List undeletable articles
  21     $sql = "SELECT ar_namespace,ar_title, COUNT(*) AS count FROM archive GROUP BY ar_namespace,ar_title ORDER BY ar_title";
  22     $res = wfQuery( $sql );
  23
  24         $wgOut->setPagetitle( wfMsg( "undeletepage" ) );
  25         $wgOut->addWikiText( wfMsg( "undeletepagetext" ) );
  26
  27     $special = $wgLang->getNsText( Namespace::getSpecial() );
  28     $sk = $wgUser->getSkin();
  29     $wgOut->addHTML( "<ul>\n" );
  30     while ($row = wfFetchObject( $res )) {
  31         $n = ($row->ar_namespace ?
  32                 ($wgLang->getNsText( $row->ar_namespace ) . ":") : "").
  33                 $row->ar_title;
  34
  35         $wgOut->addHTML( "<li>" .
  36           $sk->makeKnownLink( $wgLang->specialPage( "Undelete" ),
  37           $n, "target=" . urlencode($n) ) . " " .
  38           str_replace( '$1', $row->count, wfMsg( "undeleterevisions" )) );
  39     }
  40     $wgOut->addHTML( "</ul>\n" );
  41
  42     return $ret;
  43 }
  44
  45 /* private */ function doUndeleteShowRevision( $namespace, $title, $timestamp ) {
  46     global $wgLang, $wgUser, $wgOut, $action, $target, $timestamp, $restore;
  47
  48     if(!preg_match("/[0-9]{14}/",$timestamp)) return 0;
  49
  50     $sql = "SELECT ar_text FROM archive WHERE ar_namespace={$namespace} AND ar_title=\"{$title}\" AND ar_timestamp={$timestamp}";
  51     $ret = wfQuery( $sql );
  52     $row = wfFetchObject( $ret );
  53
  54     $wgOut->setPagetitle( wfMsg( "undeletepage" ) );
  55     $wgOut->addWikiText( "(" . str_replace("$1",
  56       $wgLang->date($timestamp, true), wfMsg( "undeleterevision" ))
  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 );
  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 );
 119                 $row = wfFetchObject( $res );
 120                 if( $row->count == 0) {
 121                         # Have to create new article...
 122                         $max = wfGetSQL( "archive", "MAX(ar_timestamp)", "ar_namespace={$namespace} AND ar_title='{$t}'" );
 123                 $sql = "INSERT INTO cur (cur_namespace,cur_title,cur_text," .
 124                           "cur_comment,cur_user,cur_user_text,cur_timestamp,inverse_timestamp,cur_minor_edit,cur_random)" .
 125                           "SELECT ar_namespace,ar_title,ar_text,ar_comment," .
 126                           "ar_user,ar_user_text,ar_timestamp,99999999999999-ar_timestamp,ar_minor_edit,RAND() FROM archive " .
 127                           "WHERE ar_namespace={$namespace} AND ar_title='{$t}' AND ar_timestamp={$max}";
 128                         wfQuery( $sql, $fname );
 129                 $newid = wfInsertId();
 130                         $oldones = "AND ar_timestamp<{$max}";
 131                 } else {
 132                         # If already exists, put history entirely into old table
 133                         $oldones = "";
 134                         $newid = 0;
 135                 }
 136
 137                 $sql = "INSERT INTO old (old_namespace,old_title,old_text," .
 138                   "old_comment,old_user,old_user_text,old_timestamp,inverse_timestamp,old_minor_edit," .
 139                   "old_flags) SELECT ar_namespace,ar_title,ar_text,ar_comment," .
 140                   "ar_user,ar_user_text,ar_timestamp,99999999999999-ar_timestamp,ar_minor_edit,ar_flags " .
 141                   "FROM archive WHERE ar_namespace={$namespace} AND ar_title='{$t}' {$oldones}";
 142                 wfQuery( $sql, $fname );
 143
 144         # Finally, clean up the link tables
 145                 if( $newid ) {
 146                         # Create a dummy OutputPage to update the outgoing links
 147                         # This works at the moment due to good luck. It may stop working in the
 148                         # future. Damn globals.
 149                         $dummyOut = new OutputPage();
 150                         $to = Title::newFromDBKey( $target );
 151                         $res = wfQuery( "SELECT cur_text FROM cur WHERE cur_id={$newid} " .
 152                           "AND cur_namespace={$namespace}", $fname );
 153                         $row = wfFetchObject( $res );
 154                         $text = $row->cur_text;
 155                         $dummyOut->addWikiText( $text );
 156                         wfFreeResult( $res );
 157
 158                         $u = new LinksUpdate( $newid, $to->getPrefixedDBkey() );
 159                         array_push( $wgDeferredUpdateList, $u );
 160
 161                         #TODO: SearchUpdate, etc.
 162                 }
 163
 164                 # Now that it's safely stored, take it out of the archive
 165                 $sql = "DELETE FROM archive WHERE ar_namespace={$namespace} AND " .
 166                   "ar_title='{$t}'";
 167                 wfQuery( $sql, $fname );
 168
 169
 170         # Touch the log?
 171
 172         $wgOut->addWikiText(str_replace("$1", $target, wfMsg("undeletedtext")));
 173                 return 0;
 174         }
 175 ?>