/**
* Called from Phalanx::findBlocked
*
* @param $content string text to check
*/
public static function check($content, $expected_id)
{
global $wgPhalanxShadowingPercentage;
if (empty($wgPhalanxShadowingPercentage) || !is_numeric($wgPhalanxShadowingPercentage)) {
return;
}
if (mt_rand(1, 100) <= $wgPhalanxShadowingPercentage) {
wfProfileIn(__METHOD__);
if (self::$typeName !== null) {
wfDebug(__METHOD__ . '::' . self::$typeName . "\n");
$service = new PhalanxService();
$service->matchShadow(self::$typeName, $content, $expected_id);
}
wfProfileOut(__METHOD__);
}
self::$typeName = null;
}
/**
* Directly check for IP block which is quicker than looping through all filters as we don't support
* anything other than exact for IP blocks, and this significantly improves performance
*
* @author grunny
*/
protected static function blockCheckIP(User $user, $text, $writeStats = true)
{
global $wgMemc, $wgExternalSharedDB;
wfProfileIn(__METHOD__);
PhalanxShadowing::setType(Phalanx::TYPE_USER);
$dbr = wfGetDB(DB_SLAVE, array(), $wgExternalSharedDB);
$moduleId = Phalanx::TYPE_USER;
$timestampNow = wfTimestampNow();
$ipAddr = IP::toHex($text);
$row = $dbr->selectRow('phalanx', '*', array("p_type & {$moduleId} = {$moduleId}", "p_lang IS NULL", 'p_ip_hex' => $ipAddr, "p_expire IS NULL OR p_expire > {$dbr->addQuotes($timestampNow)}"), __METHOD__);
if ($row !== false) {
$blockData = array('id' => $row->p_id, 'author_id' => $row->p_author_id, 'text' => $row->p_text, 'type' => $row->p_type, 'timestamp' => $row->p_timestamp, 'expire' => $row->p_expire, 'exact' => $row->p_exact, 'regex' => $row->p_regex, 'case' => $row->p_case, 'reason' => $row->p_reason, 'lang' => $row->p_lang);
Wikia::log(__METHOD__, __LINE__, "Block '{$blockData['text']}' blocked '{$text}'.");
if ($writeStats) {
Phalanx::addStats($blockData['id'], $blockData['type']);
}
self::setUserData($user, $blockData, $text, true);
$cachedState = array('timestamp' => wfTimestampNow(), 'block' => $blockData, 'return' => false);
$wgMemc->set(self::getCacheKey($user), $cachedState);
PhalanxShadowing::check($user->getName(), $blockData['id']);
wfProfileOut(__METHOD__);
return false;
}
PhalanxShadowing::check($user->getName(), 0);
wfProfileOut(__METHOD__);
return true;
}
/**
* test if provided text is blocked
* @param string $text string to be tested against filter
* @param array $blocksData blocks data (text, params, id), either in full or short format
* @param boolean $writeStats should stats be recorded?
* @param array $matchingBlockData (out) block data that matched
*
* @return Array with 'blocked' key containing boolean status
*
* @author Maciej Błaszkowski <marooned at wikia-inc.com>
* @author Władysław Bodzek
*/
static function findBlocked($text, $blocksData, $writeStats = true, &$matchingBlockData = null)
{
wfProfileIn(__METHOD__);
$result = array('blocked' => false, 'msg' => '');
foreach ($blocksData as $blockData) {
if (isset($blockData['id'])) {
// full format
$blockId = $blockData['id'];
$blockText = $blockData['text'];
$isRegex = $blockData['regex'];
$isExact = $blockData['exact'];
$isCase = $blockData['case'];
} else {
// short format
list($blockId, $blockText, $blockFlags) = $blockData;
$isRegex = ($blockFlags & self::FLAG_REGEX) > 0;
$isExact = ($blockFlags & self::FLAG_EXACT) > 0;
$isCase = ($blockFlags & self::FLAG_CASE) > 0;
}
$origText = $blockText;
if ($isRegex) {
//escape slashes uses as regex delimiter
$blockText = str_replace('/', '\\/', preg_replace('|\\\\*/|', '/', $blockText));
if ($isExact) {
//add begining and end anchor only once (user might added it already)
if (strpos($blockText, '^') !== 0) {
$blockText = '^' . $blockText;
}
if (substr($blockText, -1) != '$') {
$blockText .= '$';
}
}
$blockText = "/{$blockText}/";
if (!$isCase) {
$blockText .= 'i';
}
//QuickFix™ for bad regexes
//TODO: validate regexes on save/edit
wfSuppressWarnings();
$matched = preg_match($blockText, $text, $matches);
if ($matched === false) {
Wikia::log(__METHOD__, __LINE__, "Bad regex found: {$blockText}");
}
wfRestoreWarnings();
if ($matched) {
$blockData = Phalanx::getFromId($blockId);
if ($blockData) {
if ($writeStats) {
self::addStats($blockData['id'], $blockData['type']);
}
$result['blocked'] = true;
$result['msg'] = $matches[0];
}
}
} else {
//plain text
if (!$isCase) {
$text = strtolower($text);
$blockText = strtolower($blockText);
}
if ($isExact) {
if ($text == $blockText) {
$blockData = Phalanx::getFromId($blockId);
if ($blockData) {
if ($writeStats) {
self::addStats($blockData['id'], $blockData['type']);
}
$result['blocked'] = true;
$result['msg'] = $origText;
//original case
}
}
} else {
if (!empty($blockText) && strpos($text, $blockText) !== false) {
$blockData = Phalanx::getFromId($blockId);
if ($blockData) {
if ($writeStats) {
self::addStats($blockData['id'], $blockData['type']);
}
$result['blocked'] = true;
$result['msg'] = $origText;
//original case
}
}
}
}
if ($result['blocked']) {
$matchingBlockData = $blockData;
break;
}
}
$expected_id = isset($matchingBlockData) && $matchingBlockData['id'] ? $matchingBlockData['id'] : 0;
PhalanxShadowing::check($text, $expected_id);
wfProfileOut(__METHOD__);
return $result;
}
