/**
* Common implementation for the APIEditBeforeSave, EditFilterMerged
* and EditFilterMergedContent hooks.
*
* @param IContextSource $context the context of the edit
* @param Content|null $content the new Content generated by the edit
* @param string $text new page content (subject of filtering)
* @param Status $status Error message to return
* @param string $summary Edit summary for page
* @param bool $minoredit whether this is a minor edit according to the user.
*
* @return bool
*/
public static function filterEdit(IContextSource $context, $content, $text, Status $status, $summary, $minoredit)
{
// Load vars
$vars = new AbuseFilterVariableHolder();
$title = $context->getTitle();
// Some edits are running through multiple hooks, but we only want to filter them once
if (isset($title->editAlreadyFiltered)) {
return true;
} elseif ($title) {
$title->editAlreadyFiltered = true;
}
self::$successful_action_vars = false;
self::$last_edit_page = false;
$user = $context->getUser();
// Check for null edits.
$oldtext = '';
$oldcontent = null;
if ($title instanceof Title && $title->canExist() && $title->exists()) {
// Make sure we load the latest text saved in database (bug 31656)
$page = $context->getWikiPage();
$revision = $page->getRevision();
if (!$revision) {
return true;
}
if (defined('MW_SUPPORTS_CONTENTHANDLER')) {
$oldcontent = $revision->getContent(Revision::RAW);
$oldtext = AbuseFilter::contentToString($oldcontent);
} else {
$oldtext = AbuseFilter::revisionToString($revision, Revision::RAW);
}
// Cache article object so we can share a parse operation
$articleCacheKey = $title->getNamespace() . ':' . $title->getText();
AFComputedVariable::$articleCache[$articleCacheKey] = $page;
} else {
$page = null;
}
// Don't trigger for null edits.
if ($content && $oldcontent && $oldcontent->equals($content)) {
// Compare Content objects if available
return true;
} else {
if (strcmp($oldtext, $text) == 0) {
// Otherwise, compare strings
return true;
}
}
$vars->addHolders(AbuseFilter::generateUserVars($user), AbuseFilter::generateTitleVars($title, 'ARTICLE'));
$vars->setVar('action', 'edit');
$vars->setVar('summary', $summary);
$vars->setVar('minor_edit', $minoredit);
$vars->setVar('old_wikitext', $oldtext);
$vars->setVar('new_wikitext', $text);
// TODO: set old_content and new_content vars, use them
$vars->addHolders(AbuseFilter::getEditVars($title, $page));
$filter_result = AbuseFilter::filterAction($vars, $title);
if (!$filter_result->isOK()) {
$status->merge($filter_result);
return true;
// re-show edit form
}
self::$successful_action_vars = $vars;
self::$last_edit_page = $page;
return true;
}
