public function scan_data_execute_unixsocket($data) {
        $socket = stream_socket_client('unix://' . $this->get_config('pathtounixsocket'), $errno, $errstr, ANTIVIRUS_CLAMAV_SOCKET_TIMEOUT);
        if (!$socket) {
            // Can't open socket for some reason, notify admins.
            $notice = get_string('errorcantopensocket', 'antivirus_clamav', "$errstr ($errno)");
            $this->set_scanning_notice($notice);
            return self::SCAN_RESULT_ERROR;
        } else {
            // Initiate data stream scanning.
            // Using 'n' as command prefix is forcing clamav to only treat \n as newline delimeter,
            // this is to avoid unexpected newline characters on different systems.
            fwrite($socket, "nINSTREAM\n");
            // Send data in chunks of ANTIVIRUS_CLAMAV_SOCKET_CHUNKSIZE size.
            while (strlen($data) > 0) {
                $chunk = substr($data, 0, ANTIVIRUS_CLAMAV_SOCKET_CHUNKSIZE);
                $data = substr($data, ANTIVIRUS_CLAMAV_SOCKET_CHUNKSIZE);
                $size = pack('N', strlen($chunk));
                fwrite($socket, $size);
                fwrite($socket, $chunk);
            }
            // Terminate streaming.
            fwrite($socket, pack('N', 0));

            $output = stream_get_line($socket, 4096);
            fclose($socket);

            // Parse the output.
            return $this->parse_unixsocket_response($output);
        }
    }
public function scan_data_execute_unixsocket($data) {
        $socket = stream_socket_client('unix://' . $this->get_config('pathtounixsocket'), $errno, $errstr, ANTIVIRUS_CLAMAV_SOCKET_TIMEOUT);
        if (!$socket) {
            // Can't open socket for some reason, notify admins.
            $notice = get_string('errorcantopensocket', 'antivirus_clamav', "$errstr ($errno)");
            $this->set_scanning_notice($notice);
            return self::SCAN_RESULT_ERROR;
        } else {
            // Initiate data stream scanning.
            // Using 'n' as command prefix is forcing clamav to only treat \n as newline delimeter,
            // this is to avoid unexpected newline characters on different systems.
            fwrite($socket, "nINSTREAM\n");
            // Send data in chunks of ANTIVIRUS_CLAMAV_SOCKET_CHUNKSIZE size.
            while (strlen($data) > 0) {
                $chunk = substr($data, 0, ANTIVIRUS_CLAMAV_SOCKET_CHUNKSIZE);
                $data = substr($data, ANTIVIRUS_CLAMAV_SOCKET_CHUNKSIZE);
                $size = pack('N', strlen($chunk));
                fwrite($socket, $size);
                fwrite($socket, $chunk);
            }
            // Terminate streaming.
            fwrite($socket, pack('N', 0));

            $output = stream_get_line($socket, 4096);
            fclose($socket);

            // Parse the output.
            return $this->parse_unixsocket_response($output);
        }
    }
public function scan_data_execute_unixsocket ( $ data ) { $ socket = stream_socket_client ( 'unix://' . $ this -> get_config ( 'pathtounixsocket' ) , $ errno , $ errstr , ANTIVIRUS_CLAMAV_SOCKET_TIMEOUT ) ; if ( ! $ socket ) { // Can't open socket for some reason, notify admins. $ notice = get_string ( 'errorcantopensocket' , 'antivirus_clamav' , "$errstr ($errno)" ) ; $ this -> set_scanning_notice ( $ notice ) ; return self :: SCAN_RESULT_ERROR ; } else { // Initiate data stream scanning. // Using 'n' as command prefix is forcing clamav to only treat \n as newline delimeter, // this is to avoid unexpected newline characters on different systems. fwrite ( $ socket , "nINSTREAM\n" ) ; // Send data in chunks of ANTIVIRUS_CLAMAV_SOCKET_CHUNKSIZE size. while ( strlen ( $ data ) > 0 ) { $ chunk = substr ( $ data , 0 , ANTIVIRUS_CLAMAV_SOCKET_CHUNKSIZE ) ; $ data = substr ( $ data , ANTIVIRUS_CLAMAV_SOCKET_CHUNKSIZE ) ; $ size = pack ( 'N' , strlen ( $ chunk ) ) ; fwrite ( $ socket , $ size ) ; fwrite ( $ socket , $ chunk ) ; } // Terminate streaming. fwrite ( $ socket , pack ( 'N' , 0 ) ) ; $ output = stream_get_line ( $ socket , 4096 ) ; fclose ( $ socket ) ; // Parse the output. return $ this -> parse_unixsocket_response ( $ output ) ; } }
Scan data using unix socket.

We are running INSTREAM command and passing data stream in chunks.
The format of the chunk is: <length><data> where <length> is the size of the following
data in bytes expressed as a 4 byte unsigned integer in network byte order and <data>
is the actual chunk. Streaming is terminated by sending a zero-length chunk.
Do not exceed StreamMaxLength as defined in clamd.conf, otherwise clamd will
reply with INSTREAM size limit exceeded and close the connection.

@param string $data The varaible containing the data to scan.
@return int Scanning result constant.
Scan data using unix socket .