/**
*
* APDPlat - Application Product Development Platform
* Copyright (c) 2013, 杨尚川, yang-shangchuan@qq.com
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
*/
package org.apdplat.module.security.service.sequence;
import org.apdplat.module.system.service.PropertyHolder;
import org.apdplat.platform.log.APDPlatLogger;
import org.apdplat.platform.util.ConvertUtils;
import org.apdplat.platform.util.FileUtils;
import java.io.File;
import java.io.UnsupportedEncodingException;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import java.util.HashSet;
import java.util.Properties;
import java.util.Set;
import org.apdplat.platform.log.APDPlatLoggerFactory;
import org.hyperic.sigar.Mem;
import org.hyperic.sigar.NetFlags;
import org.hyperic.sigar.NetInterfaceConfig;
import org.hyperic.sigar.Sigar;
/**
*机器码生成的通用服务
* @author 杨尚川
*/
public abstract class AbstractSequenceService implements SequenceService{
protected final APDPlatLogger LOG = APDPlatLoggerFactory.getAPDPlatLogger(getClass());
/**
* 对一段String生成MD5摘要信息
* @param message 要摘要的String
* @return 生成的MD5摘要信息
*/
protected String getMD5(String message) {
message += "{apdplat}";
try {
MessageDigest md = MessageDigest.getInstance("MD5");
LOG.debug("MD5摘要长度：" + md.getDigestLength());
byte[] b = md.digest(message.getBytes("utf-8"));
String md5 = ConvertUtils.byte2HexString(b)+message.length();
return getSplitString(md5);
} catch (NoSuchAlgorithmException | UnsupportedEncodingException e) {
LOG.error("MD5摘要失败",e);
}
return null;
}
/**
* 将很长的字符串以固定的位数分割开，以便于人类阅读
* @param str
* @return
*/
protected String getSplitString(String str){
return getSplitString(str, "-", 4);
}
/**
* 将很长的字符串以固定的位数分割开，以便于人类阅读
* 如将
* 71F5DA7F495E7F706D47F3E63DC6349A
* 以-，每4个一组，则分割为
* 71F5-DA7F-495E-7F70-6D47-F3E6-3DC6-349A
* @param str 字符串
* @param split 分隔符
* @param length 长度
* @return
*/
protected String getSplitString(String str, String split, int length){
int len=str.length();
StringBuilder temp=new StringBuilder();
for(int i=0;i<len;i++){
if(i%length==0 && i>0){
temp.append(split);
}
temp.append(str.charAt(i));
}
String[] attrs=temp.toString().split(split);
StringBuilder finalMachineCode=new StringBuilder();
for(String attr : attrs){
if(attr.length()==length){
finalMachineCode.append(attr).append(split);
}
}
String result=finalMachineCode.toString().substring(0, finalMachineCode.toString().length()-1);
return result;
}
protected String getSigarFile(String osName){
StringBuilder result = new StringBuilder();
result.append("libsigar-");
String osArch = System.getProperty("os.arch");
if(osArch.contains("64")){
result.append("amd64-");
}else{
result.append("x86-");
}
result.append(osName).append("-1.6.4.so");
return result.toString();
}
/**
* 利用sigar来生成机器码，当然这个实现不是很好，无法获得CPU ID，希望有兴趣的朋友来改进这个实现
* @param osName 操作系统类型
* @return 机器码
*/
protected String getSigarSequence(String osName) {
try {
File libFile = new File(FileUtils.getAbsolutePath("/WEB-INF/lib/"+getSigarFile(osName)));
LOG.debug("libsigar: "+libFile.getAbsolutePath());
System.load(libFile.getAbsolutePath());
Set<String> result = new HashSet<>();
Sigar sigar = new Sigar();
String[] ifaces = sigar.getNetInterfaceList();
for (String iface : ifaces) {
NetInterfaceConfig cfg = sigar.getNetInterfaceConfig(iface);
if (NetFlags.LOOPBACK_ADDRESS.equals(cfg.getAddress()) || (cfg.getFlags() & NetFlags.IFF_LOOPBACK) != 0
|| NetFlags.NULL_HWADDR.equals(cfg.getHwaddr())) {
continue;
}
String mac = cfg.getHwaddr();
result.add(mac);
LOG.debug("mac: " + mac);
}
if(result.size()<1){
return null;
}
Properties props = System.getProperties();
String javaVersion = props.getProperty("java.version");
result.add(javaVersion);
LOG.debug("Java的运行环境版本： " + javaVersion);
String javaVMVersion = props.getProperty("java.vm.version");
result.add(javaVMVersion);
LOG.debug("Java的虚拟机实现版本： " + props.getProperty("java.vm.version"));
String osVersion = props.getProperty("os.version");
result.add(osVersion);
LOG.debug("操作系统的版本： " + props.getProperty("os.version"));
Mem mem = sigar.getMem();
// 内存总量
String totalMem = mem.getTotal() / 1024L + "K av";
LOG.debug("内存总量: " + totalMem);
result.add(totalMem);
LOG.debug("result: " + result);
String machineCode = getMD5(result.toString());
return machineCode;
} catch (Throwable ex) {
LOG.error("生成 "+osName+" 平台下的机器码失败", ex);
}
return null;
}
}