package de.tudarmstadt.informatik.hostage.format;

import de.tudarmstadt.informatik.hostage.commons.HelperUtils;

/**
 * MySQL log view formatter.
 * @author Wulf Pfeiffer
 */
public class MySQLFormatter implements ProtocolFormatter {

	public String format(String packet) {
		byte[] bytes = HelperUtils.hexStringToBytes(packet);
		String command = "Command: " + getCommand(bytes) + "\n";
		String content = "Content: " + HelperUtils.byteToStr(bytes) + "\n";
		return command + content;
	}
	
	/**
	 * Checks a packet for its command code and returns the name of this command.
	 * @param bytes to check.
	 * @return name of the command.
	 */
	private String getCommand(byte[] bytes) {
		//if packet number is 1 server started conversation so it must be login
		if(bytes.length < 5) return "";
		if(bytes[3] == 0x01) return "Login request"; 
		//else check for command code
		switch(bytes[4]) {
		case 0x00: return "COM_SLEEP";
		case 0x01: return "COM_QUIT";
		case 0x02: return "COM_INIT_DB";
		case 0x03: return "COM_QUERY";
		case 0x04: return "COM_FIELD_LIST";
		case 0x05: return "COM_CREATE_DB";
		case 0x06: return "COM_DROP_DB";
		case 0x07: return "COM_REFRESH";
		case 0x08: return "COM_SHUTDOWN";
		case 0x09: return "COM_STATISTICS";
		case 0x0a: return "COM_PROCESS_INFO";
		case 0x0b: return "COM_CONNECT";
		case 0x0c: return "COM_PROCESS_KILL";
		case 0x0d: return "COM_DEBUG";
		case 0x0e: return "COM_PING";
		case 0x0f: return "COM_TIME";
		case 0x10: return "COM_DELAYED_INSERT";
		case 0x11: return "COM_CHANGE_USER";
		case 0x12: return "COM_BINLOG_DUMP";
		case 0x13: return "COM_TABLE_DUMP";
		case 0x14: return "COM_CONNECT_OUT";
		case 0x15: return "COM_REGISTER_SLAVE";
		case 0x16: return "COM_STMT_PREPARE";
		case 0x17: return "COM_STMT_EXECUTE";
		case 0x18: return "COM_STMT_SEND_LONG_DATA";
		case 0x19: return "COM_STMT_CLOSE";
		case 0x1a: return "COM_STMT_RESET";
		case 0x1b: return "COM_SET_OPTION";
		case 0x1c: return "COM_STMT_FETCH";
		case 0x1d: return "COM_DAEMON";
		case 0x1e: return "COM_BINLOG_DUMP_GTID";
		default: return "unkown command";
		}
	}

}