protected function castBool($args)
{
if (count($args) < 1) {
throw new AFPUserVisibleException('noparams', $this->mCur->pos, array(__METHOD__));
}
$val = $args[0];
return AFPData::castTypes($val, AFPData::DBool);
}
/**
* @param $vars AbuseFilterVariableHolder
* @return AFPData|array|int|mixed|null|string
* @throws MWException
* @throws AFPException
*/
function compute($vars)
{
$parameters = $this->mParameters;
$result = null;
if (!wfRunHooks('AbuseFilter-interceptVariable', array($this->mMethod, $vars, $parameters, &$result))) {
return $result instanceof AFPData ? $result : AFPData::newFromPHPVar($result);
}
switch ($this->mMethod) {
case 'diff':
$text1Var = $parameters['oldtext-var'];
$text2Var = $parameters['newtext-var'];
$text1 = $vars->getVar($text1Var)->toString() . "\n";
$text2 = $vars->getVar($text2Var)->toString() . "\n";
$result = wfDiff($text1, $text2);
break;
case 'diff-split':
$diff = $vars->getVar($parameters['diff-var'])->toString();
$line_prefix = $parameters['line-prefix'];
$diff_lines = explode("\n", $diff);
$interest_lines = array();
foreach ($diff_lines as $line) {
if (substr($line, 0, 1) === $line_prefix) {
$interest_lines[] = substr($line, strlen($line_prefix));
}
}
$result = $interest_lines;
break;
case 'links-from-wikitext':
// This should ONLY be used when sharing a parse operation with the edit.
/* @var WikiPage $article */
$article = $parameters['article'];
if ($article !== null && (!defined('MW_SUPPORTS_CONTENTHANDLER') || $article->getContentModel() === CONTENT_MODEL_WIKITEXT)) {
$textVar = $parameters['text-var'];
// XXX: Use prepareContentForEdit. But we need a Content object for that.
$new_text = $vars->getVar($textVar)->toString();
$content = ContentHandler::makeContent($new_text, $article->getTitle());
$editInfo = $article->prepareContentForEdit($content);
$links = array_keys($editInfo->output->getExternalLinks());
$result = $links;
break;
}
// Otherwise fall back to database
// Otherwise fall back to database
case 'links-from-wikitext-nonedit':
case 'links-from-wikitext-or-database':
// TODO: use Content object instead, if available! In any case, use WikiPage, not Article.
$article = self::articleFromTitle($parameters['namespace'], $parameters['title']);
if ($vars->getVar('context')->toString() == 'filter') {
$links = $this->getLinksFromDB($article);
wfDebug("AbuseFilter: loading old links from DB\n");
} elseif (!defined('MW_SUPPORTS_CONTENTHANDLER') || $article->getContentModel() === CONTENT_MODEL_WIKITEXT) {
wfDebug("AbuseFilter: loading old links from Parser\n");
$textVar = $parameters['text-var'];
$wikitext = $vars->getVar($textVar)->toString();
$editInfo = $this->parseNonEditWikitext($wikitext, $article);
$links = array_keys($editInfo->output->getExternalLinks());
} else {
// TODO: Get links from Content object. But we don't have the content object.
// And for non-text content, $wikitext is usually not going to be a valid
// serialization, but rather some dummy text for filtering.
$links = array();
}
$result = $links;
break;
case 'link-diff-added':
case 'link-diff-removed':
$oldLinkVar = $parameters['oldlink-var'];
$newLinkVar = $parameters['newlink-var'];
$oldLinks = $vars->getVar($oldLinkVar)->toString();
$newLinks = $vars->getVar($newLinkVar)->toString();
$oldLinks = explode("\n", $oldLinks);
$newLinks = explode("\n", $newLinks);
if ($this->mMethod == 'link-diff-added') {
$result = array_diff($newLinks, $oldLinks);
}
if ($this->mMethod == 'link-diff-removed') {
$result = array_diff($oldLinks, $newLinks);
}
break;
case 'parse-wikitext':
// Should ONLY be used when sharing a parse operation with the edit.
$article = $parameters['article'];
if ($article !== null && (!defined('MW_SUPPORTS_CONTENTHANDLER') || $article->getContentModel() === CONTENT_MODEL_WIKITEXT)) {
$textVar = $parameters['wikitext-var'];
// XXX: Use prepareContentForEdit. But we need a Content object for that.
$new_text = $vars->getVar($textVar)->toString();
$editInfo = $article->prepareTextForEdit($new_text);
if (isset($parameters['pst']) && $parameters['pst']) {
$result = $editInfo->pstContent->serialize($editInfo->format);
} else {
$newHTML = $editInfo->output->getText();
// Kill the PP limit comments. Ideally we'd just remove these by not setting the
// parser option, but then we can't share a parse operation with the edit, which is bad.
$result = preg_replace('/<!--\\s*NewPP limit report[^>]*-->\\s*$/si', '', $newHTML);
}
break;
}
// Otherwise fall back to database
// Otherwise fall back to database
case 'parse-wikitext-nonedit':
// TODO: use Content object instead, if available! In any case, use WikiPage, not Article.
$article = self::articleFromTitle($parameters['namespace'], $parameters['title']);
$textVar = $parameters['wikitext-var'];
if (!defined('MW_SUPPORTS_CONTENTHANDLER') || $article->getContentModel() === CONTENT_MODEL_WIKITEXT) {
if (isset($parameters['pst']) && $parameters['pst']) {
// $textVar is already PSTed when it's not loaded from an ongoing edit.
$result = $vars->getVar($textVar)->toString();
} else {
$text = $vars->getVar($textVar)->toString();
$editInfo = $this->parseNonEditWikitext($text, $article);
$result = $editInfo->output->getText();
}
} else {
// TODO: Parser Output from Content object. But we don't have the content object.
// And for non-text content, $wikitext is usually not going to be a valid
// serialization, but rather some dummy text for filtering.
$result = '';
}
break;
case 'strip-html':
$htmlVar = $parameters['html-var'];
$html = $vars->getVar($htmlVar)->toString();
$result = StringUtils::delimiterReplace('<', '>', '', $html);
break;
case 'load-recent-authors':
$cutOff = $parameters['cutoff'];
$title = Title::makeTitle($parameters['namespace'], $parameters['title']);
if (!$title->exists()) {
$result = '';
break;
}
$dbr = wfGetDB(DB_SLAVE);
$res = $dbr->select('revision', 'DISTINCT rev_user_text', array('rev_page' => $title->getArticleID(), 'rev_timestamp<' . $dbr->addQuotes($dbr->timestamp($cutOff))), __METHOD__, array('ORDER BY' => 'rev_timestamp DESC', 'LIMIT' => 10));
$users = array();
foreach ($res as $row) {
$users[] = $row->rev_user_text;
}
$result = $users;
break;
case 'get-page-restrictions':
$action = $parameters['action'];
$title = Title::makeTitle($parameters['namespace'], $parameters['title']);
$rights = $title->getRestrictions($action);
$rights = count($rights) ? $rights : array();
$result = $rights;
break;
case 'simple-user-accessor':
$user = $parameters['user'];
$method = $parameters['method'];
if (!$user) {
throw new MWException('No user parameter given.');
}
$obj = self::getUserObject($user);
if (!$obj) {
throw new MWException("Invalid username {$user}");
}
$result = call_user_func(array($obj, $method));
break;
case 'user-age':
$user = $parameters['user'];
$asOf = $parameters['asof'];
$obj = self::getUserObject($user);
if ($obj->getId() == 0) {
$result = 0;
break;
}
$registration = $obj->getRegistration();
$result = wfTimestamp(TS_UNIX, $asOf) - wfTimestampOrNull(TS_UNIX, $registration);
break;
case 'user-groups':
// Deprecated but needed by old log entries
$user = $parameters['user'];
$obj = self::getUserObject($user);
$result = $obj->getEffectiveGroups();
break;
case 'length':
$s = $vars->getVar($parameters['length-var'])->toString();
$result = strlen($s);
break;
case 'subtract':
$v1 = $vars->getVar($parameters['val1-var'])->toFloat();
$v2 = $vars->getVar($parameters['val2-var'])->toFloat();
$result = $v1 - $v2;
break;
case 'revision-text-by-id':
$rev = Revision::newFromId($parameters['revid']);
$result = AbuseFilter::revisionToString($rev);
break;
case 'revision-text-by-timestamp':
$timestamp = $parameters['timestamp'];
$title = Title::makeTitle($parameters['namespace'], $parameters['title']);
$dbr = wfGetDB(DB_SLAVE);
$rev = Revision::loadFromTimestamp($dbr, $title, $timestamp);
$result = AbuseFilter::revisionToString($rev);
break;
default:
if (wfRunHooks('AbuseFilter-computeVariable', array($this->mMethod, $vars, $parameters, &$result))) {
throw new AFPException('Unknown variable compute type ' . $this->mMethod);
}
}
return $result instanceof AFPData ? $result : AFPData::newFromPHPVar($result);
}
function compute($vars)
{
$parameters = $this->mParameters;
$result = null;
switch ($this->mMethod) {
case 'diff':
$text1Var = $parameters['oldtext-var'];
$text2Var = $parameters['newtext-var'];
$text1 = $vars->getVar($text1Var)->toString();
$text2 = $vars->getVar($text2Var)->toString();
$result = wfDiff($text1, $text2);
$result = trim(preg_replace("/^\\\\ No newline at end of file\n/m", '', $result));
break;
case 'diff-split':
$diff = $vars->getVar($parameters['diff-var'])->toString();
$line_prefix = $parameters['line-prefix'];
$diff_lines = explode("\n", $diff);
$interest_lines = array();
foreach ($diff_lines as $line) {
if (substr($line, 0, 1) === $line_prefix) {
$interest_lines[] = substr($line, strlen($line_prefix));
}
}
$result = $interest_lines;
break;
case 'links-from-wikitext':
// This should ONLY be used when sharing a parse operation with the edit.
$article = $parameters['article'];
if ($article) {
$textVar = $parameters['text-var'];
$new_text = $vars->getVar($textVar)->toString();
$editInfo = $article->prepareTextForEdit($new_text);
$links = array_keys($editInfo->output->getExternalLinks());
$result = $links;
break;
}
// Otherwise fall back to database
// Otherwise fall back to database
case 'links-from-wikitext-nonedit':
case 'links-from-wikitext-or-database':
$article = self::articleFromTitle($parameters['namespace'], $parameters['title']);
if ($vars->getVar('context')->toString() == 'filter') {
$links = $this->getLinksFromDB($article);
wfDebug("AbuseFilter: loading old links from DB\n");
} else {
wfDebug("AbuseFilter: loading old links from Parser\n");
$textVar = $parameters['text-var'];
$wikitext = $vars->getVar($textVar)->toString();
$editInfo = $this->parseNonEditWikitext($wikitext, $article);
$links = array_keys($editInfo->output->getExternalLinks());
}
$result = $links;
break;
case 'link-diff-added':
case 'link-diff-removed':
$oldLinkVar = $parameters['oldlink-var'];
$newLinkVar = $parameters['newlink-var'];
$oldLinks = $vars->getVar($oldLinkVar)->toString();
$newLinks = $vars->getVar($newLinkVar)->toString();
$oldLinks = explode("\n", $oldLinks);
$newLinks = explode("\n", $newLinks);
if ($this->mMethod == 'link-diff-added') {
$result = array_diff($newLinks, $oldLinks);
}
if ($this->mMethod == 'link-diff-removed') {
$result = array_diff($oldLinks, $newLinks);
}
break;
case 'parse-wikitext':
// Should ONLY be used when sharing a parse operation with the edit.
$article = $parameters['article'];
if ($article) {
$textVar = $parameters['wikitext-var'];
$new_text = $vars->getVar($textVar)->toString();
$editInfo = $article->prepareTextForEdit($new_text);
$newHTML = $editInfo->output->getText();
// Kill the PP limit comments. Ideally we'd just remove these by not setting the
// parser option, but then we can't share a parse operation with the edit, which is bad.
$result = preg_replace('/<!--\\s*NewPP limit report[^>]*-->\\s*$/si', '', $newHTML);
break;
}
// Otherwise fall back to database
// Otherwise fall back to database
case 'parse-wikitext-nonedit':
$article = self::articleFromTitle($parameters['namespace'], $parameters['title']);
$textVar = $parameters['wikitext-var'];
$text = $vars->getVar($textVar)->toString();
$editInfo = $this->parseNonEditWikitext($text, $article);
$result = $editInfo->output->getText();
break;
case 'strip-html':
$htmlVar = $parameters['html-var'];
$html = $vars->getVar($htmlVar)->toString();
$result = StringUtils::delimiterReplace('<', '>', '', $html);
break;
case 'load-recent-authors':
$cutOff = $parameters['cutoff'];
$title = Title::makeTitle($parameters['namespace'], $parameters['title']);
if (!$title->exists()) {
$result = '';
break;
}
$dbr = wfGetDB(DB_SLAVE);
$res = $dbr->select('revision', 'DISTINCT rev_user_text', array('rev_page' => $title->getArticleId(), 'rev_timestamp<' . $dbr->addQuotes($dbr->timestamp($cutOff))), __METHOD__, array('ORDER BY' => 'rev_timestamp DESC', 'LIMIT' => 10));
$users = array();
foreach ($res as $row) {
$users[] = $row->rev_user_text;
}
$result = $users;
break;
case 'get-page-restrictions':
$action = $parameters['action'];
$title = Title::makeTitle($parameters['namespace'], $parameters['title']);
$rights = $title->getRestrictions($action);
$rights = count($rights) ? $rights : array();
$result = $rights;
break;
case 'simple-user-accessor':
$user = $parameters['user'];
$method = $parameters['method'];
if (!$user) {
throw new MWException('No user parameter given.');
}
$obj = self::userObjectFromName($user);
if (!$obj) {
throw new MWException("Invalid username {$user}");
}
$result = call_user_func(array($obj, $method));
break;
case 'user-age':
$user = $parameters['user'];
$asOf = $parameters['asof'];
$obj = self::userObjectFromName($user);
if ($obj->getId() == 0) {
$result = 0;
break;
}
$registration = $obj->getRegistration();
$result = wfTimestamp(TS_UNIX, $asOf) - wfTimestampOrNull(TS_UNIX, $registration);
break;
case 'user-groups':
$user = $parameters['user'];
$obj = self::userObjectFromName($user);
$result = $obj->getEffectiveGroups();
break;
case 'length':
$s = $vars->getVar($parameters['length-var'])->toString();
$result = strlen($s);
break;
case 'subtract':
$v1 = $vars->getVar($parameters['val1-var'])->toFloat();
$v2 = $vars->getVar($parameters['val2-var'])->toFloat();
$result = $v1 - $v2;
break;
case 'revision-text-by-id':
$rev = Revision::newFromId($parameters['revid']);
$result = $rev->getText();
break;
case 'revision-text-by-timestamp':
$timestamp = $parameters['timestamp'];
$title = Title::makeTitle($parameters['namespace'], $parameters['title']);
$dbr = wfGetDB(DB_SLAVE);
$rev = Revision::loadFromTimestamp($dbr, $title, $timestamp);
if ($rev) {
$result = $rev->getText();
} else {
$result = '';
}
break;
default:
if (wfRunHooks('AbuseFilter-computeVariable', array($this->mMethod, $vars))) {
throw new AFPException('Unknown variable compute type ' . $this->mMethod);
}
}
return $result instanceof AFPData ? $result : AFPData::newFromPHPVar($result);
}