/**
* Spamcheck against wordlist
*
* Checks the wikitext against a list of blocked expressions
* returns true if the text contains any bad words
*
* Triggers COMMON_WORDBLOCK_BLOCKED
*
* Action Plugins can use this event to inspect the blocked data
* and gain information about the user who was blocked.
*
* Event data:
* data['matches'] - array of matches
* data['userinfo'] - information about the blocked user
* [ip] - ip address
* [user] - username (if logged in)
* [mail] - mail address (if logged in)
* [name] - real name (if logged in)
*
* @author Andreas Gohr <*****@*****.**>
* @author Michael Klier <*****@*****.**>
* @param string $text - optional text to check, if not given the globals are used
* @return bool - true if a spam word was found
*/
function checkwordblock($text = '')
{
global $TEXT;
global $PRE;
global $SUF;
global $conf;
global $INFO;
if (!$conf['usewordblock']) {
return false;
}
if (!$text) {
$text = "{$PRE} {$TEXT} {$SUF}";
}
// we prepare the text a tiny bit to prevent spammers circumventing URL checks
$text = preg_replace('!(\\b)(www\\.[\\w.:?\\-;,]+?\\.[\\w.:?\\-;,]+?[\\w/\\#~:.?+=&%@\\!\\-.:?\\-;,]+?)([.:?\\-;,]*[^\\w/\\#~:.?+=&%@\\!\\-.:?\\-;,])!i', '\\1http://\\2 \\2\\3', $text);
$wordblocks = getWordblocks();
// how many lines to read at once (to work around some PCRE limits)
if (version_compare(phpversion(), '4.3.0', '<')) {
// old versions of PCRE define a maximum of parenthesises even if no
// backreferences are used - the maximum is 99
// this is very bad performancewise and may even be too high still
$chunksize = 40;
} else {
// read file in chunks of 200 - this should work around the
// MAX_PATTERN_SIZE in modern PCRE
$chunksize = 200;
}
while ($blocks = array_splice($wordblocks, 0, $chunksize)) {
$re = array();
// build regexp from blocks
foreach ($blocks as $block) {
$block = preg_replace('/#.*$/', '', $block);
$block = trim($block);
if (empty($block)) {
continue;
}
$re[] = $block;
}
if (count($re) && preg_match('#(' . join('|', $re) . ')#si', $text, $matches)) {
// prepare event data
$data['matches'] = $matches;
$data['userinfo']['ip'] = $_SERVER['REMOTE_ADDR'];
if ($_SERVER['REMOTE_USER']) {
$data['userinfo']['user'] = $_SERVER['REMOTE_USER'];
$data['userinfo']['name'] = $INFO['userinfo']['name'];
$data['userinfo']['mail'] = $INFO['userinfo']['mail'];
}
$callback = create_function('', 'return true;');
return trigger_event('COMMON_WORDBLOCK_BLOCKED', $data, $callback, true);
}
}
return false;
}
/**
* Spamcheck against wordlist
*
* Checks the wikitext against a list of blocked expressions
* returns true if the text contains any bad words
*
* @author Andreas Gohr <*****@*****.**>
*/
function checkwordblock()
{
global $TEXT;
global $conf;
if (!$conf['usewordblock']) {
return false;
}
// we prepare the text a tiny bit to prevent spammers circumventing URL checks
$text = preg_replace('!(\\b)(www\\.[\\w.:?\\-;,]+?\\.[\\w.:?\\-;,]+?[\\w/\\#~:.?+=&%@\\!\\-.:?\\-;,]+?)([.:?\\-;,]*[^\\w/\\#~:.?+=&%@\\!\\-.:?\\-;,])!i', '\\1http://\\2 \\2\\3', $TEXT);
$wordblocks = getWordblocks();
//how many lines to read at once (to work around some PCRE limits)
if (version_compare(phpversion(), '4.3.0', '<')) {
//old versions of PCRE define a maximum of parenthesises even if no
//backreferences are used - the maximum is 99
//this is very bad performancewise and may even be too high still
$chunksize = 40;
} else {
//read file in chunks of 200 - this should work around the
//MAX_PATTERN_SIZE in modern PCRE
$chunksize = 200;
}
while ($blocks = array_splice($wordblocks, 0, $chunksize)) {
$re = array();
#build regexp from blocks
foreach ($blocks as $block) {
$block = preg_replace('/#.*$/', '', $block);
$block = trim($block);
if (empty($block)) {
continue;
}
$re[] = $block;
}
if (preg_match('#(' . join('|', $re) . ')#si', $text, $match = array())) {
return true;
}
}
return false;
}