package com.sitech.ismp.ice.syslog;

import java.text.ParseException;
import java.util.Hashtable;

public class SyslogDefs {
	//
	// SyslogLvl
	//
	public static final int LOG_EMERG = 0; /* system is unusable */
	public static final int LOG_ALERT = 1; /* action must be taken immediately */
	public static final int LOG_CRIT = 2; /* critical conditions */
	public static final int LOG_ERR = 3; /* error conditions */
	public static final int LOG_WARNING = 4; /* warning conditions */
	public static final int LOG_NOTICE = 5; /* normal but significant condition */
	public static final int LOG_INFO = 6; /* informational */
	public static final int LOG_DEBUG = 7; /* debug-level messages */
	public static final int LOG_ALL = 8; /* '*' in config, all levels */

	//
	// SyslogFac
	//
	public static final int LOG_KERN = 0; /* kernel messages */
	public static final int LOG_USER = 1; /* random user-level messages */
	public static final int LOG_MAIL = 2; /* mail system */
	public static final int LOG_DAEMON = 3; /* system daemons */
	public static final int LOG_AUTH = 4; /* security/authorization messages */
	public static final int LOG_SYSLOG = 5; /*
											 * messages generated internally by
											 * syslogd
											 */
	public static final int LOG_LPR = 6; /* line printer subsystem */
	public static final int LOG_NEWS = 7; /* network news subsystem */
	public static final int LOG_UUCP = 8; /* UUCP subsystem */
	public static final int LOG_CRON = 9; /* clock daemon */

	/* other codes through 15 reserved for system use */

	public static final int LOG_LOCAL0 = 16; /* reserved for local use */
	public static final int LOG_LOCAL1 = 17; /* reserved for local use */
	public static final int LOG_LOCAL2 = 18; /* reserved for local use */
	public static final int LOG_LOCAL3 = 19; /* reserved for local use */
	public static final int LOG_LOCAL4 = 20; /* reserved for local use */
	public static final int LOG_LOCAL5 = 21; /* reserved for local use */
	public static final int LOG_LOCAL6 = 22; /* reserved for local use */
	public static final int LOG_LOCAL7 = 23; /* reserved for local use */

	public static final int LOG_NFACILITIES = 24; /*
													 * current number of
													 * facilities
													 */

	public static final int LOG_PRIMASK = 0x07; /*
												 * mask to extract priority part
												 * (internal)
												 */
	public static final int LOG_FACMASK = 0x03F8; /*
													 * mask to extract facility
													 * part
													 */
	public static final int INTERNAL_NOPRI = 0x10; /*
													 * the "no priority"
													 * priority
													 */

	public static final int LOG_PID = 0x01; /* log the pid with each message */
	public static final int LOG_CONS = 0x02; /*
												 * log on the console if errors
												 * in sending
												 */
	public static final int LOG_ODELAY = 0x04; /*
												 * delay open until first
												 * syslog() (default)
												 */
	public static final int LOG_NDELAY = 0x08; /* don't delay open */
	public static final int LOG_NOWAIT = 0x10; /*
												 * don't wait for console forks:
												 * DEPRECATED
												 */
	public static final int LOG_PERROR = 0x20; /* log to stderr as well */

	public static final int DEFAULT_PORT = 514;

	static private Hashtable facHash;
	static private Hashtable priHash;

	static {
		facHash = new Hashtable(20);

		facHash.put("KERN", new Integer(SyslogDefs.LOG_KERN));
		facHash.put("KERNEL", new Integer(SyslogDefs.LOG_KERN));
		facHash.put("USER", new Integer(SyslogDefs.LOG_USER));
		facHash.put("MAIL", new Integer(SyslogDefs.LOG_MAIL));
		facHash.put("DAEMON", new Integer(SyslogDefs.LOG_DAEMON));
		facHash.put("AUTH", new Integer(SyslogDefs.LOG_AUTH));
		facHash.put("SYSLOG", new Integer(SyslogDefs.LOG_SYSLOG));
		facHash.put("LPR", new Integer(SyslogDefs.LOG_LPR));
		facHash.put("NEWS", new Integer(SyslogDefs.LOG_NEWS));
		facHash.put("UUCP", new Integer(SyslogDefs.LOG_UUCP));
		facHash.put("CRON", new Integer(SyslogDefs.LOG_CRON));
		facHash.put("LOCAL0", new Integer(SyslogDefs.LOG_LOCAL0));
		facHash.put("LOCAL1", new Integer(SyslogDefs.LOG_LOCAL1));
		facHash.put("LOCAL2", new Integer(SyslogDefs.LOG_LOCAL2));
		facHash.put("LOCAL3", new Integer(SyslogDefs.LOG_LOCAL3));
		facHash.put("LOCAL4", new Integer(SyslogDefs.LOG_LOCAL4));
		facHash.put("LOCAL5", new Integer(SyslogDefs.LOG_LOCAL5));
		facHash.put("LOCAL6", new Integer(SyslogDefs.LOG_LOCAL6));
		facHash.put("LOCAL7", new Integer(SyslogDefs.LOG_LOCAL7));

		priHash = new Hashtable(20);

		priHash.put("EMERG", new Integer(SyslogDefs.LOG_EMERG));
		priHash.put("EMERGENCY", new Integer(SyslogDefs.LOG_EMERG));
		priHash.put("LOG_EMERG", new Integer(SyslogDefs.LOG_EMERG));
		priHash.put("ALERT", new Integer(SyslogDefs.LOG_ALERT));
		priHash.put("LOG_ALERT", new Integer(SyslogDefs.LOG_ALERT));
		priHash.put("CRIT", new Integer(SyslogDefs.LOG_CRIT));
		priHash.put("CRITICAL", new Integer(SyslogDefs.LOG_CRIT));
		priHash.put("LOG_CRIT", new Integer(SyslogDefs.LOG_CRIT));
		priHash.put("ERR", new Integer(SyslogDefs.LOG_ERR));
		priHash.put("ERROR", new Integer(SyslogDefs.LOG_ERR));
		priHash.put("LOG_ERR", new Integer(SyslogDefs.LOG_ERR));
		priHash.put("WARNING", new Integer(SyslogDefs.LOG_WARNING));
		priHash.put("LOG_WARNING", new Integer(SyslogDefs.LOG_WARNING));
		priHash.put("NOTICE", new Integer(SyslogDefs.LOG_NOTICE));
		priHash.put("LOG_NOTICE", new Integer(SyslogDefs.LOG_NOTICE));
		priHash.put("INFO", new Integer(SyslogDefs.LOG_INFO));
		priHash.put("LOG_INFO", new Integer(SyslogDefs.LOG_INFO));
		priHash.put("DEBUG", new Integer(SyslogDefs.LOG_DEBUG));
		priHash.put("LOG_DEBUG", new Integer(SyslogDefs.LOG_DEBUG));
	}

	static public int extractFacility(int code) {
		return ((code & SyslogDefs.LOG_FACMASK) >> 3);
	}

	static public int extractPriority(int code) {
		return (code & SyslogDefs.LOG_PRIMASK);
	}

	static public int computeCode(int facility, int priority) {
		return ((facility << 3) | priority);
	}

	static public String getPriorityName(int level) {
		switch (level) {
		case SyslogDefs.LOG_EMERG:
			return "emergency";// �� ��ϵͳ������
		case SyslogDefs.LOG_ALERT:
			return "alert";// �澯 ��Ҫb�����޸ĵ����
		case SyslogDefs.LOG_CRIT:
			return "critical";// ���� ��ֹijЩ���߻���ϵͳ����ʵ�ֵĴ������
		case SyslogDefs.LOG_ERR:
			return "error";// ���� ��ֹ���߻�ijЩ��ϵͳ���ֹ���ʵ�ֵĴ������
		case SyslogDefs.LOG_WARNING:
			return "warning";// ���� Ԥ����Ϣ
		case SyslogDefs.LOG_NOTICE:
			return "notice";// ֪ͨ ������Ҫ�Ե���ͨ���
		case SyslogDefs.LOG_INFO:
			return "info";// ��Ϣ �ṩ��Ϣ����Ϣ
		case SyslogDefs.LOG_DEBUG:
			return "debug";// ���� ����������������������Ϣ
		}

		return "unknown level='" + level + "'";
	}

	static public String getFacilityName(int facility) {
		switch (facility) {
		case SyslogDefs.LOG_KERN:
			return "kernel";// �ں���Ϣ������ͨ�� klogd ���ݡ�
		case SyslogDefs.LOG_USER:
			return "user";// ���û�������ɵ���Ϣ
		case SyslogDefs.LOG_MAIL:
			return "mail";// ������ʼ��йص���Ϣ
		case SyslogDefs.LOG_DAEMON:
			return "daemon";// �� inetd �ػ�����йصĺ�̨�����Ϣ��
		case SyslogDefs.LOG_AUTH:
			return "auth";// �� pam_wdb �������֤�
		case SyslogDefs.LOG_SYSLOG:
			return "syslog";// �� syslog ��ɵ���Ϣ
		case SyslogDefs.LOG_LPR:
			return "lpr";// ���ӡ�����йص���Ϣ��
		case SyslogDefs.LOG_NEWS:
			return "news";// 4�����ŷ��������Ϣ
		case SyslogDefs.LOG_UUCP:
			return "uucp";// �� uuc ��ɵ���Ϣ
		case SyslogDefs.LOG_CRON:
			return "cron";// �� cron �� at �йصļƻ�������Ϣ��

		case SyslogDefs.LOG_LOCAL0:
			return "local0";
		case SyslogDefs.LOG_LOCAL1:
			return "local1";
		case SyslogDefs.LOG_LOCAL2:
			return "local2";
		case SyslogDefs.LOG_LOCAL3:
			return "local3";
		case SyslogDefs.LOG_LOCAL4:
			return "local4";
		case SyslogDefs.LOG_LOCAL5:
			return "local5";
		case SyslogDefs.LOG_LOCAL6:
			return "local6";
		case SyslogDefs.LOG_LOCAL7:
			return "local7";
		}

		return "unknown facility='" + facility + "'";
	}

	static public int getPriority(String priority) throws ParseException {
		String priKey = priority.toUpperCase();
		Integer result = (Integer) SyslogDefs.priHash.get(priKey);

		if (result == null) {
			throw new ParseException("unknown priority '" + priority + "'", 0);
		}

		return result.intValue();
	}

	static public int getFacility(String facility) throws ParseException {
		String facKey = facility.toUpperCase();
		Integer result = (Integer) SyslogDefs.facHash.get(facKey);

		if (result == null) {
			throw new ParseException("unknown facility '" + facility + "'", 0);
		}

		return result.intValue();
	}

}