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/**
 * Copyright (c) 2011-2014, [email protected].
 *
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not
 * use this file except in compliance with the License. You may obtain a copy of
 * the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 * License for the specific language governing permissions and limitations under
 * the License.
 */
package com.baomidou.framework.common.util;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;

import com.baomidou.kisso.common.util.EnvUtil;

/**
 * 
 * MAC地址工具
 * 
 * 
 * @author hubin
 * @version 2016-04-16
 */
public class MacUtil extends EnvUtil {

	/**
	 * 获取当前操作系统名称. return 操作系统名称 例如:windows,Linux,Unix等.
	 */
	public static String getOSName() {
		return System.getProperty("os.name").toLowerCase();
	}

	/**
	 * 获取Unix网卡的mac地址.
	 * 
	 * @return mac地址
	 */
	public static String getUnixMACAddress() {
		String mac = null;
		BufferedReader bufferedReader = null;
		Process process = null;
		try {
			/**
			 * Unix下的命令，一般取eth0作为本地主网卡 显示信息中包含有mac地址信息
			 */
			process = Runtime.getRuntime().exec("ifconfig eth0");
			bufferedReader = new BufferedReader(new InputStreamReader(process.getInputStream()));
			String line = null;
			int index = -1;
			while ((line = bufferedReader.readLine()) != null) {
				/**
				 * 寻找标示字符串[hwaddr]
				 */
				index = line.toLowerCase().indexOf("hwaddr");
				/**
				 * 找到了
				 */
				if (index != -1) {
					/**
					 * 取出mac地址并去除2边空格
					 */
					mac = line.substring(index + "hwaddr".length() + 1).trim();
					break;
				}
			}
		} catch (IOException e) {
			e.printStackTrace();
		} finally {
			try {
				if (bufferedReader != null) {
					bufferedReader.close();
				}
			} catch (IOException e1) {
				e1.printStackTrace();
			}
			bufferedReader = null;
			process = null;
		}

		return mac;
	}

	/**
	 * 获取Linux网卡的mac地址.
	 * 
	 * @return mac地址
	 */
	public static String getLinuxMACAddress() {
		String mac = null;
		BufferedReader bufferedReader = null;
		Process process = null;
		try {
			/**
			 * linux下的命令，一般取eth0作为本地主网卡 显示信息中包含有mac地址信息
			 */
			process = Runtime.getRuntime().exec("ifconfig eth0");
			bufferedReader = new BufferedReader(new InputStreamReader(process.getInputStream()));
			String line = null;
			int index = -1;
			while ((line = bufferedReader.readLine()) != null) {
				index = line.toLowerCase().indexOf("硬件地址");
				/**
				 * 找到了
				 */
				if (index != -1) {
					/**
					 * 取出mac地址并去除2边空格
					 */
					mac = line.substring(index + 4).trim();
					break;
				}
			}
		} catch (IOException e) {
			e.printStackTrace();
		} finally {
			try {
				if (bufferedReader != null) {
					bufferedReader.close();
				}
			} catch (IOException e1) {
				e1.printStackTrace();
			}
			bufferedReader = null;
			process = null;
		}

		// 取不到，试下Unix取发
		if (mac == null) {
			return getUnixMACAddress();
		}

		return mac;
	}

	/**
	 * 获取widnows网卡的mac地址.
	 * 
	 * @return mac地址
	 */
	public static String getWindowsMACAddress() {
		String mac = null;
		BufferedReader bufferedReader = null;
		Process process = null;
		try {
			/**
			 * windows下的命令，显示信息中包含有mac地址信息
			 */
			process = Runtime.getRuntime().exec("ipconfig /all");
			bufferedReader = new BufferedReader(new InputStreamReader(process.getInputStream()));
			String line = null;
			int index = -1;
			while ((line = bufferedReader.readLine()) != null) {
				/**
				 * 寻找标示字符串[physical address]
				 */
				// index = line.toLowerCase().indexOf("physical address");
				// if (index != -1) {
				if (line.split("-").length == 6) {
					index = line.indexOf(":");
					if (index != -1) {
						/**
						 * 取出mac地址并去除2边空格
						 */
						mac = line.substring(index + 1).trim();
					}
					break;
				}
				index = line.toLowerCase().indexOf("物理地址");
				if (index != -1) {
					index = line.indexOf(":");
					if (index != -1) {
						/**
						 * 取出mac地址并去除2边空格
						 */
						mac = line.substring(index + 1).trim();
					}
					break;
				}
			}
		} catch (IOException e) {
			e.printStackTrace();
		} finally {
			try {
				if (bufferedReader != null) {
					bufferedReader.close();
				}
			} catch (IOException e1) {
				e1.printStackTrace();
			}
			bufferedReader = null;
			process = null;
		}

		return mac;
	}

	public static String getMac() {
		String mac = null;
		String os = getOSName();
		if (os.startsWith("windows")) {
			mac = getWindowsMACAddress();
		} else if (os.startsWith("linux")) {
			mac = getLinuxMACAddress();
		} else {
			mac = getUnixMACAddress();
		}
		return mac == null ? "" : mac;
	}

}