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<?php
function wfSpecialUndelete( $par )
{
global $wgRequest;
$form = new UndeleteForm( $wgRequest, $par );
$form->execute();
}
class UndeleteForm {
var $mAction, $mTarget, $mTimestamp, $mRestore, $mTargetObj;
function UndeleteForm( &$request, $par = "" ) {
$this->mAction = $request->getText( 'action' );
$this->mTarget = $request->getText( 'target' );
$this->mTimestamp = $request->getText( 'timestamp' );
$this->mRestore = $request->getCheck( 'restore' );
if( $par != "" ) {
$this->mTarget = $par;
}
if ( $this->mTarget !== "" ) {
$this->mTargetObj = Title::newFromURL( $this->mTarget );
} else {
$this->mTargetObj = NULL;
}
}
function execute() {
if( !is_null( $this->mTargetObj ) ) {
$title = $this->mTargetObj->mDbkeyform;
$namespace = $this->mTargetObj->mNamespace;
if( $this->mTimestamp !== "" ) {
return $this->showRevision( $namespace, $title, $this->mTimestamp );
}
if( $this->mRestore and $this->mAction == "submit" ) {
return $this->undelete( $namespace, $title );
}
return $this->showHistory( $namespace, $title );
} else {
return $this->showList();
}
}
/* private */ function showList() {
global $wgLang, $wgUser, $wgOut;
$fname = "UndeleteForm::showList";
# List undeletable articles
$sql = "SELECT ar_namespace,ar_title, COUNT(*) AS count FROM archive " .
"GROUP BY ar_namespace,ar_title ORDER BY ar_namespace,ar_title";
$res = wfQuery( $sql, DB_READ, $fname );
$wgOut->setPagetitle( wfMsg( "undeletepage" ) );
$wgOut->addWikiText( wfMsg( "undeletepagetext" ) );
$special = $wgLang->getNsText( Namespace::getSpecial() );
$sk = $wgUser->getSkin();
$wgOut->addHTML( "<ul>\n" );
while ($row = wfFetchObject( $res )) {
$n = ($row->ar_namespace ?
($wgLang->getNsText( $row->ar_namespace ) . ":") : "").
$row->ar_title;
$wgOut->addHTML( "<li>" .
$sk->makeKnownLink( $wgLang->specialPage( "Undelete" ),
$n, "target=" . urlencode($n) ) . " " .
wfMsg( "undeleterevisions", $row->count ) );
}
$wgOut->addHTML( "</ul>\n" );
return 0;
}
/* private */ function showRevision( $namespace, $title, $timestamp ) {
global $wgLang, $wgUser, $wgOut;
$fname = "UndeleteForm::showRevision";
if(!preg_match("/[0-9]{14}/",$timestamp)) return 0;
$sql = "SELECT ar_text,ar_flags FROM archive ".
"WHERE ar_namespace={$namespace} AND ar_title='" .
wfStrencode( $title ) . "' AND ar_timestamp='" . wfStrencode( $timestamp ) ."'";
$ret = wfQuery( $sql, DB_READ, $fname );
$row = wfFetchObject( $ret );
$wgOut->setPagetitle( wfMsg( "undeletepage" ) );
$wgOut->addWikiText( "(" . wfMsg( "undeleterevision", $wgLang->date($timestamp, true) )
. ")\n<hr>\n" . Article::getRevisionText( $row, "ar_" ) );
return 0;
}
/* private */ function showHistory( $namespace, $title ) {
global $wgLang, $wgUser, $wgOut;
$sk = $wgUser->getSkin();
$wgOut->setPagetitle( wfMsg( "undeletepage" ) );
# Get text of first revision
$sql = "SELECT ar_text FROM archive WHERE ar_namespace={$namespace} AND ar_title='" .
wfStrencode( $title ) . "' ORDER BY ar_timestamp DESC LIMIT 1";
$ret = wfQuery( $sql, DB_READ );
if( wfNumRows( $ret ) == 0 ) {
$wgOut->addWikiText( wfMsg( "nohistory" ) );
return 0;
}
$row = wfFetchObject( $ret );
$wgOut->addWikiText( wfMsg( "undeletehistory" ) . "\n<hr>\n" . $row->ar_text );
# Get remaining revisions
$sql = "SELECT ar_minor_edit,ar_timestamp,ar_user,ar_user_text,ar_comment
FROM archive WHERE ar_namespace={$namespace} AND ar_title='" . wfStrencode( $title ) .
"' ORDER BY ar_timestamp DESC";
$ret = wfQuery( $sql, DB_READ );
# Ditch first row
$row = wfFetchObject( $ret );
$titleObj = Title::makeTitle( NS_SPECIAL, "Undelete" );
$action = $titleObj->escapeLocalURL( "action=submit" );
$encTarget = htmlspecialchars( $this->mTarget );
$wgOut->addHTML("<p>
<form id=\"undelete\" method=\"post\" action=\"{$action}\">
<input type=hidden name=\"target\" value=\"{$encTarget}\">
<input type=submit name=\"restore\" value=\"".wfMsg("undeletebtn")."\">
</form>");
$log = wfGetSQL("cur", "cur_text", "cur_namespace=4 AND cur_title='".
wfStrencode( wfMsg("dellogpage") ) . "'" );
if(preg_match("/^(.*".
preg_quote( ($namespace ? ($wgLang->getNsText($namespace) . ":") : "")
. str_replace("_", " ", $title), "/" ).".*)$/m", $log, $m)) {
$wgOut->addWikiText( $m[1] );
}
$special = $wgLang->getNsText( Namespace::getSpecial() );
$wgOut->addHTML("<ul>");
while( $row = wfFetchObject( $ret ) ) {
$wgOut->addHTML( "<li>" .
$sk->makeKnownLink( $wgLang->specialPage( "Undelete" ),
$wgLang->timeanddate( $row->ar_timestamp, true ),
"target=" . urlencode($this->mTarget) . "×tamp={$row->ar_timestamp}" ) . " " .
". . " . htmlspecialchars( $row->ar_user_text ) .
" <i>(" . htmlspecialchars($row->ar_comment) . "</i>)\n");
}
$wgOut->addHTML("</ul>");
return 0;
}
/* private */ function undelete( $namespace, $title )
{
global $wgUser, $wgOut, $wgLang, $wgDeferredUpdateList;
global $wgUseSquid, $wgInternalServer;
$fname = "doUndeleteArticle";
if ( "" == $title ) {
$wgOut->fatalError( wfMsg( "cannotundelete" ) );
return;
}
$t = wfStrencode($title);
# Move article and history from the "archive" table
$sql = "SELECT COUNT(*) AS count FROM cur WHERE cur_namespace={$namespace} AND cur_title='{$t}'";
$res = wfQuery( $sql, DB_READ );
$row = wfFetchObject( $res );
$now = wfTimestampNow();
if( $row->count == 0) {
# Have to create new article...
$sql = "SELECT ar_text,ar_timestamp,ar_flags FROM archive WHERE ar_namespace={$namespace} AND ar_title='{$t}' ORDER BY ar_timestamp DESC LIMIT 1";
$res = wfQuery( $sql, DB_READ, $fname );
$s = wfFetchObject( $res );
$max = $s->ar_timestamp;
$redirect = MagicWord::get( MAG_REDIRECT );
$redir = $redirect->matchStart( $s->ar_text ) ? 1 : 0;
$sql = "INSERT INTO cur (cur_namespace,cur_title,cur_text," .
"cur_comment,cur_user,cur_user_text,cur_timestamp,inverse_timestamp,cur_minor_edit,cur_is_redirect,cur_random,cur_touched)" .
"SELECT ar_namespace,ar_title,ar_text,ar_comment," .
"ar_user,ar_user_text,ar_timestamp,99999999999999-ar_timestamp,ar_minor_edit,{$redir},RAND(),'{$now}' FROM archive " .
"WHERE ar_namespace={$namespace} AND ar_title='{$t}' AND ar_timestamp={$max}";
wfQuery( $sql, DB_WRITE, $fname );
$newid = wfInsertId();
$oldones = "AND ar_timestamp<{$max}";
} else {
# If already exists, put history entirely into old table
$oldones = "";
$newid = 0;
# But to make the history list show up right, we need to touch it.
$sql = "UPDATE cur SET cur_touched='{$now}' WHERE cur_namespace={$namespace} AND cur_title='{$t}'";
wfQuery( $sql, DB_WRITE, $fname );
# FIXME: Sometimes restored entries will be _newer_ than the current version.
# We should merge.
}
$sql = "INSERT INTO old (old_namespace,old_title,old_text," .
"old_comment,old_user,old_user_text,old_timestamp,inverse_timestamp,old_minor_edit," .
"old_flags) SELECT ar_namespace,ar_title,ar_text,ar_comment," .
"ar_user,ar_user_text,ar_timestamp,99999999999999-ar_timestamp,ar_minor_edit,ar_flags " .
"FROM archive WHERE ar_namespace={$namespace} AND ar_title='{$t}' {$oldones}";
wfQuery( $sql, DB_WRITE, $fname );
# Finally, clean up the link tables
if( $newid ) {
# Create a dummy OutputPage to update the outgoing links
# This works at the moment due to good luck. It may stop working in the
# future. Damn globals.
$dummyOut = new OutputPage();
$res = wfQuery( "SELECT cur_text FROM cur WHERE cur_id={$newid} " .
"AND cur_namespace={$namespace}", DB_READ, $fname );
$row = wfFetchObject( $res );
$text = $row->cur_text;
$dummyOut->addWikiText( $text );
wfFreeResult( $res );
$u = new LinksUpdate( $newid, $this->mTargetObj->getPrefixedDBkey() );
array_push( $wgDeferredUpdateList, $u );
Article::onArticleCreate( $this->mTargetObj );
#TODO: SearchUpdate, etc.
}
# Now that it's safely stored, take it out of the archive
$sql = "DELETE FROM archive WHERE ar_namespace={$namespace} AND " .
"ar_title='{$t}'";
wfQuery( $sql, DB_WRITE, $fname );
# Touch the log?
$log = new LogPage( wfMsg( "dellogpage" ), wfMsg( "dellogpagetext" ) );
$log->addEntry( wfMsg( "undeletedarticle", $this->mTarget ), "" );
$wgOut->addWikiText( wfMsg( "undeletedtext", $this->mTarget ) );
return 0;
}
}
?>
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