includes/SpecialUndelete.php

   1 <?php
   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     $sql = "SELECT ar_text,ar_flags FROM archive WHERE ar_namespace={$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" . Article::getRevisionText( $row, "ar_" ) );
  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
  68     $sql = "SELECT ar_minor_edit,ar_timestamp,ar_user,ar_user_text,ar_comment
  69       FROM archive WHERE ar_namespace={$namespace} AND ar_title=\"{$title}\"
  70       ORDER BY ar_timestamp DESC";
  71     $ret = wfQuery( $sql, DB_READ );
  72
  73         if( wfNumRows( $ret ) == 0 ) {
  74                 $wgOut->addWikiText( wfMsg( "nohistory" ) );
  75                 return 0;
  76         }
  77
  78     $wgOut->addWikiText( wfMsg( "undeletehistory" ) . "\n<hr>\n" . $row->ar_text );
  79
  80         $action = wfLocalUrlE( $wgLang->specialPage( "Undelete" ), "action=submit" );
  81         $wgOut->addHTML("<p>
  82 <form id=\"undelete\" method=\"post\" action=\"{$action}\">
  83 <input type=hidden name=\"target\" value=\"{$target}\">
  84 <input type=submit name=\"restore\" value=\"".wfMsg("undeletebtn")."\">
  85 </form>");
  86
  87     $log = wfGetSQL("cur", "cur_text", "cur_namespace=4 AND cur_title=\"".wfMsg("dellogpage")."\"" );
  88     if(preg_match("/^(.*".
  89         preg_quote( ($namespace ? ($wgLang->getNsText($namespace) . ":") : "")
  90         . str_replace("_", " ", $title), "/" ).".*)$/m", $log, $m)) {
  91         $wgOut->addWikiText( $m[1] );
  92     }
  93
  94     $special = $wgLang->getNsText( Namespace::getSpecial() );
  95     $wgOut->addHTML("<ul>");
  96     while( $row = wfFetchObject( $ret ) ) {
  97         $wgOut->addHTML( "<li>" .
  98           $sk->makeKnownLink( $wgLang->specialPage( "Undelete" ),
  99           $wgLang->timeanddate( $row->ar_timestamp, true ),
 100           "target=" . urlencode($target) . "&timestamp={$row->ar_timestamp}" ) . " " .
 101           ". . {$row->ar_user_text}" .
 102           " <i>(" . htmlspecialchars($row->ar_comment) . "</i>)\n");
 103
 104     }
 105     $wgOut->addHTML("</ul>");
 106
 107         return 0;
 108 }
 109
 110 /* private */ function doUndeleteArticle( $namespace, $title )
 111         {
 112                 global $wgUser, $wgOut, $wgLang, $target, $wgDeferredUpdateList;
 113                 global  $wgUseSquid, $wgInternalServer;
 114
 115                 $fname = "doUndeleteArticle";
 116
 117                 if ( "" == $title ) {
 118                         $wgOut->fatalError( wfMsg( "cannotundelete" ) );
 119                         return;
 120                 }
 121                 $t = addslashes($title);
 122
 123                 # Move article and history from the "archive" table
 124                 $sql = "SELECT COUNT(*) AS count FROM cur WHERE cur_namespace={$namespace} AND cur_title='{$t}'";
 125                 $res = wfQuery( $sql, DB_READ );
 126                 $row = wfFetchObject( $res );
 127                 $now = wfTimestampNow();
 128
 129                 if( $row->count == 0) {
 130                         # Have to create new article...
 131                         $sql = "SELECT ar_text,ar_timestamp,ar_flags FROM archive WHERE ar_namespace={$namespace} AND ar_title='{$t}' ORDER BY ar_timestamp DESC LIMIT 1";
 132                         $res = wfQuery( $sql, DB_READ, $fname );
 133                         $s = wfFetchObject( $res );
 134                         $max = $s->ar_timestamp;
 135                         $redirect = MagicWord::get( MAG_REDIRECT );
 136                         $redir = $redirect->matchStart( $s->ar_text ) ? 1 : 0;
 137
 138                         $sql = "INSERT INTO cur (cur_namespace,cur_title,cur_text," .
 139                           "cur_comment,cur_user,cur_user_text,cur_timestamp,inverse_timestamp,cur_minor_edit,cur_is_redirect,cur_random,cur_touched)" .
 140                           "SELECT ar_namespace,ar_title,ar_text,ar_comment," .
 141                           "ar_user,ar_user_text,ar_timestamp,99999999999999-ar_timestamp,ar_minor_edit,{$redir},RAND(),'{$now}' FROM archive " .
 142                           "WHERE ar_namespace={$namespace} AND ar_title='{$t}' AND ar_timestamp={$max}";
 143                         wfQuery( $sql, DB_WRITE, $fname );
 144                 $newid = wfInsertId();
 145                         $oldones = "AND ar_timestamp<{$max}";
 146                 } else {
 147                         # If already exists, put history entirely into old table
 148                         $oldones = "";
 149                         $newid = 0;
 150
 151                         # But to make the history list show up right, we need to touch it.
 152                         $sql = "UPDATE cur SET cur_touched='{$now}' WHERE cur_namespace={$namespace} AND cur_title='{$t}'";
 153                         wfQuery( $sql, DB_WRITE, $fname );
 154
 155                         # FIXME: Sometimes restored entries will be _newer_ than the current version.
 156                         # We should merge.
 157                 }
 158
 159                 $sql = "INSERT INTO old (old_namespace,old_title,old_text," .
 160                   "old_comment,old_user,old_user_text,old_timestamp,inverse_timestamp,old_minor_edit," .
 161                   "old_flags) SELECT ar_namespace,ar_title,ar_text,ar_comment," .
 162                   "ar_user,ar_user_text,ar_timestamp,99999999999999-ar_timestamp,ar_minor_edit,ar_flags " .
 163                   "FROM archive WHERE ar_namespace={$namespace} AND ar_title='{$t}' {$oldones}";
 164                 wfQuery( $sql, DB_WRITE, $fname );
 165
 166         # Finally, clean up the link tables
 167                 if( $newid ) {
 168                         # Create a dummy OutputPage to update the outgoing links
 169                         # This works at the moment due to good luck. It may stop working in the
 170                         # future. Damn globals.
 171                         $dummyOut = new OutputPage();
 172                         $to = Title::newFromDBKey( $target );
 173                         $res = wfQuery( "SELECT cur_text FROM cur WHERE cur_id={$newid} " .
 174                           "AND cur_namespace={$namespace}", DB_READ, $fname );
 175                         $row = wfFetchObject( $res );
 176                         $text = $row->cur_text;
 177                         $dummyOut->addWikiText( $text );
 178                         wfFreeResult( $res );
 179
 180                         $u = new LinksUpdate( $newid, $to->getPrefixedDBkey() );
 181                         array_push( $wgDeferredUpdateList, $u );
 182
 183                         Article::onArticleCreate( $to );
 184
 185                         # Squid purging
 186                         if ( $wgUseSquid ) {
 187                                 /* this needs to be done after LinksUpdate */
 188                                 $u = new SquidUpdate($to);
 189                                 array_push( $wgDeferredUpdateList, $u );
 190                         }
 191
 192                         #TODO: SearchUpdate, etc.
 193                 }
 194
 195                 # Now that it's safely stored, take it out of the archive
 196                 $sql = "DELETE FROM archive WHERE ar_namespace={$namespace} AND " .
 197                   "ar_title='{$t}'";
 198                 wfQuery( $sql, DB_WRITE, $fname );
 199
 200
 201                 # Touch the log?
 202                 $log = new LogPage( wfMsg( "dellogpage" ), wfMsg( "dellogpagetext" ) );
 203                 $log->addEntry( wfMsg( "undeletedarticle", $target ), "" );
 204
 205                 $wgOut->addWikiText( wfMsg( "undeletedtext", $target ) );
 206                 return 0;
 207         }
 208 ?>