From 818da9f2837c68af350f1d79ec5202a86eca5123 Mon Sep 17 00:00:00 2001 From: Michael Save Date: Wed, 11 Apr 2012 02:19:13 +1000 Subject: [PATCH] Better custom flood filters: http://tinyboard.org/docs/?p=Config/Flood_filters --- inc/filters.php | 135 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 135 insertions(+) create mode 100644 inc/filters.php diff --git a/inc/filters.php b/inc/filters.php new file mode 100644 index 00000000..3698f4e0 --- /dev/null +++ b/inc/filters.php @@ -0,0 +1,135 @@ + $value) + $this->$key = $value; + } + + public function match(array $post, $condition, $match) { + $condition = strtolower($condition); + + switch($condition) { + case 'custom': + if(!is_callable($match)) + error('Custom condition for filter is not callable!'); + return $match($post); + case 'name': + return preg_match($match, $post['name']); + case 'trip': + return preg_match($match, $post['trip']); + case 'email': + return preg_match($match, $post['email']); + case 'subject': + return preg_match($match, $post['subject']); + case 'body': + return preg_match($match, $post['body']); + case 'filename': + if(!$post['has_file']) + return false; + return preg_match($match, $post['filename']); + case 'extension': + if(!$post['has_file']) + return false; + return preg_match($match, $post['body']); + case 'ip': + return preg_match($match, $_SERVER['REMOTE_ADDR']); + case 'op': + return $post['op'] == $match; + case 'has_file': + return $post['has_file'] == $match; + default: + error('Unknown filter condition: ' . $condition); + } + } + + public function action() { + global $board; + + switch($this->action) { + case 'reject': + error(isset($this->message) ? $this->message : 'Posting throttled by flood filter.'); + case 'ban': + if(!isset($this->reason)) + error('The ban action requires a reason.'); + + $reason = $this->reason; + + if(isset($this->expires)) + $expires = time() + $this->expires; + else + $expires = 0; // Ban indefinitely + + if(isset($this->reject)) + $reject = $this->reject; + else + $reject = true; + + if(isset($this->all_boards)) + $all_boards = $this->all_boards; + else + $all_boards = false; + + $query = prepare("INSERT INTO `bans` VALUES (NULL, :ip, :mod, :set, :expires, :reason, :board)"); + $query->bindValue(':ip', $_SERVER['REMOTE_ADDR']); + $query->bindValue(':mod', -1); + $query->bindValue(':set', time()); + + if($expires) + $query->bindValue(':expires', $expires); + else + $query->bindValue(':expires', null, PDO::PARAM_NULL); + + if($reason) + $query->bindValue(':reason', $reason); + else + $query->bindValue(':reason', null, PDO::PARAM_NULL); + + + if($all_boards) + $query->bindValue(':board', null, PDO::PARAM_NULL); + else + $query->bindValue(':board', $board['id']); + + $query->execute() or error(db_error($query)); + + if($reject) { + if(isset($this->message)) + error($message); + + checkBan($board['uri']); + exit; + } + + break; + default: + error('Unknown filter action: ' . $this->action); + } + } + + public function check(array $post) { + foreach($this->condition as $condition => $value) { + if(!$this->match($post, $condition, $value)) + return false; + } + + /* match */ + return true; + } +} + +function do_filters(array $post) { + global $config; + + if(!isset($config['flood_filters'])) + return; + + foreach($config['flood_filters'] as $arr) { + $filter = new Filter($arr); + if($filter->check($post)) + $filter->action(); + } +} +