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<?php |
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class Filter { |
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private $condition; |
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public function __construct(array $arr) { |
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foreach($arr as $key => $value) |
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$this->$key = $value; |
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} |
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public function match(array $post, $condition, $match) { |
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$condition = strtolower($condition); |
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switch($condition) { |
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case 'custom': |
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if(!is_callable($match)) |
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error('Custom condition for filter is not callable!'); |
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return $match($post); |
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case 'name': |
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return preg_match($match, $post['name']); |
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case 'trip': |
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return preg_match($match, $post['trip']); |
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case 'email': |
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return preg_match($match, $post['email']); |
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case 'subject': |
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return preg_match($match, $post['subject']); |
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case 'body': |
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return preg_match($match, $post['body']); |
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case 'filename': |
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if(!$post['has_file']) |
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return false; |
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return preg_match($match, $post['filename']); |
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case 'extension': |
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if(!$post['has_file']) |
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return false; |
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return preg_match($match, $post['body']); |
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case 'ip': |
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return preg_match($match, $_SERVER['REMOTE_ADDR']); |
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case 'op': |
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return $post['op'] == $match; |
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case 'has_file': |
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return $post['has_file'] == $match; |
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default: |
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error('Unknown filter condition: ' . $condition); |
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} |
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} |
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public function action() { |
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global $board; |
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switch($this->action) { |
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case 'reject': |
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error(isset($this->message) ? $this->message : 'Posting throttled by flood filter.'); |
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case 'ban': |
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if(!isset($this->reason)) |
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error('The ban action requires a reason.'); |
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$reason = $this->reason; |
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if(isset($this->expires)) |
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$expires = time() + $this->expires; |
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else |
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$expires = 0; // Ban indefinitely |
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if(isset($this->reject)) |
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$reject = $this->reject; |
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else |
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$reject = true; |
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if(isset($this->all_boards)) |
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$all_boards = $this->all_boards; |
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else |
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$all_boards = false; |
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$query = prepare("INSERT INTO `bans` VALUES (NULL, :ip, :mod, :set, :expires, :reason, :board)"); |
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$query->bindValue(':ip', $_SERVER['REMOTE_ADDR']); |
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$query->bindValue(':mod', -1); |
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$query->bindValue(':set', time()); |
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if($expires) |
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$query->bindValue(':expires', $expires); |
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else |
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$query->bindValue(':expires', null, PDO::PARAM_NULL); |
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if($reason) |
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$query->bindValue(':reason', $reason); |
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else |
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$query->bindValue(':reason', null, PDO::PARAM_NULL); |
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if($all_boards) |
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$query->bindValue(':board', null, PDO::PARAM_NULL); |
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else |
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$query->bindValue(':board', $board['id']); |
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$query->execute() or error(db_error($query)); |
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if($reject) { |
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if(isset($this->message)) |
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error($message); |
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checkBan($board['uri']); |
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exit; |
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} |
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break; |
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default: |
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error('Unknown filter action: ' . $this->action); |
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} |
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} |
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public function check(array $post) { |
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foreach($this->condition as $condition => $value) { |
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if(!$this->match($post, $condition, $value)) |
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return false; |
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} |
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/* match */ |
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return true; |
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} |
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} |
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function do_filters(array $post) { |
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global $config; |
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if(!isset($config['flood_filters'])) |
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return; |
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foreach($config['flood_filters'] as $arr) { |
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$filter = new Filter($arr); |
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if($filter->check($post)) |
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$filter->action(); |
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} |
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} |
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