📄 ipseeker.java
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/*
* LumaQQ - Java QQ Client
*
* Copyright (C) 2004 luma < stubma@163.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 2 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, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
package com.blogool.ip;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.RandomAccessFile;
import java.nio.ByteOrder;
import java.nio.MappedByteBuffer;
import java.nio.channels.FileChannel;
import java.util.ArrayList;
import java.util.Hashtable;
import java.util.List;
/**
*
*
* 用来读取QQwry.dat文件，以根据ip获得好友位置，QQwry.dat的格式是 一. 文件头，共8字节 1. 第一个起始IP的绝对偏移， 4字节 2.
* 最后一个起始IP的绝对偏移， 4字节 二. "结束地址/国家/区域"记录区 四字节ip地址后跟的每一条记录分成两个部分 1. 国家记录 2. 地区记录
* 但是地区记录是不一定有的。而且国家记录和地区记录都有两种形式 1. 以0结束的字符串 2. 4个字节，一个字节可能为0x1或0x2 a.
* 为0x1时，表示在绝对偏移后还跟着一个区域的记录，注意是绝对偏移之后，而不是这四个字节之后 b. 为0x2时，表示在绝对偏移后没有区域记录
* 不管为0x1还是0x2，后三个字节都是实际国家名的文件内绝对偏移
* 如果是地区记录，0x1和0x2的含义不明，但是如果出现这两个字节，也肯定是跟着3个字节偏移，如果不是 则为0结尾字符串 三.
* "起始地址/结束地址偏移"记录区 1. 每条记录7字节，按照起始地址从小到大排列 a. 起始IP地址，4字节 b. 结束ip地址的绝对偏移，3字节
*
* 注意，这个文件里的ip地址和所有的偏移量均采用little-endian格式，而java是采用 big-endian格式的，要注意转换
*
*/
public class IPSeeker {
/**
*
*
* 用来封装ip相关信息，目前只有两个字段，ip所在的国家和地区
*
*
*
*
* @author 马若劼
*/
public static void main(String[] args) {
IPSeeker ipseeker = IPSeeker.getInstance();
String sip[] = { "60.177.69.138", "124.91.62.239", "124.91.62.239",
"59.40.87.8", "221.222.73.88", "60.51.114.120",
"222.212.223.146", "60.51.114.120", "60.51.114.120",
"60.51.114.120", "60.51.114.120", "211.99.23.121",
"58.45.85.107", "58.45.85.107", "121.32.94.204",
"117.22.46.178", "218.19.2.195", "58.218.23.10",
"58.218.23.10", "202.173.10.2", "60.178.167.241",
"58.213.137.5", "58.38.165.221", "58.38.165.221",
"61.150.15.25", "58.45.82.76", "218.8.200.210", "59.33.24.233",
"60.176.240.196", "60.9.86.85", "60.51.114.120",
"60.51.114.120", "125.120.155.45", "219.140.61.180",
"219.140.61.180", "59.49.158.100", "59.49.158.100",
"58.218.23.10", "221.220.25.54", "222.71.176.119",
"220.168.115.124", "58.38.165.221", "218.3.251.246",
"58.213.137.5", "218.3.251.246", "121.33.219.235",
"222.130.195.225", "60.51.114.120", "218.3.251.246",
"219.140.61.180", "219.140.61.180", "125.120.155.45",
"60.9.97.186", "124.228.44.177", "218.19.2.195",
"222.70.225.180", "58.38.165.221", "58.38.165.221",
"60.168.67.99", "58.38.165.221", "58.38.165.221",
"61.29.214.76", "220.234.156.254", "60.51.114.120",
"60.51.114.120", "60.51.114.120", "222.168.148.111",
"117.24.28.13", "59.49.158.100", "60.209.253.61",
"61.150.15.83", "60.208.156.110", "124.227.192.131",
"125.120.155.90", "218.83.58.250", "60.191.89.102",
"222.71.176.119", "60.178.167.241", "60.208.111.203",
"222.74.231.66", "58.221.253.118", "122.89.146.55",
"60.51.114.120", "58.221.253.118", "59.49.158.100",
"218.10.158.162", "220.160.38.98", "124.227.192.131",
"219.245.44.214", "211.158.41.214", "219.245.44.185",
"218.0.113.43", "211.158.41.214", "218.68.82.73",
"125.120.144.14", "125.120.155.90", "60.171.169.251",
"124.78.165.8", "124.78.165.8", "218.22.186.125" };
for (int i = 0; i < sip.length; i++) {
System.out.println(ipseeker.getAddress(sip[i]));
}
}
private class IPLocation {
public String country;
public String area;
public IPLocation() {
country = area = "";
}
public IPLocation getCopy() {
IPLocation ret = new IPLocation();
ret.country = country;
ret.area = area;
return ret;
}
}
private static final String IP_FILE = IPSeeker.class.getResource(
"QQWry.dat").toString().substring(5);
// 一些固定常量，比如记录长度等等
private static final int IP_RECORD_LENGTH = 7;
private static final byte AREA_FOLLOWED = 0x01;
private static final byte NO_AREA = 0x2;
// 用来做为cache，查询一个ip时首先查看cache，以减少不必要的重复查找
private Hashtable ipCache;
// 随机文件访问类
private RandomAccessFile ipFile;
// 内存映射文件
private MappedByteBuffer mbb;
// 单一模式实例
private static IPSeeker instance = new IPSeeker();
// 起始地区的开始和结束的绝对偏移
private long ipBegin, ipEnd;
// 为提高效率而采用的临时变量
private IPLocation loc;
private byte[] buf;
private byte[] b4;
private byte[] b3;
/**
* 私有构造函数
*/
private IPSeeker() {
ipCache = new Hashtable();
loc = new IPLocation();
buf = new byte[100];
b4 = new byte[4];
b3 = new byte[3];
try {
ipFile = new RandomAccessFile(IP_FILE, "r");
} catch (FileNotFoundException e) {
System.out.println(IPSeeker.class.getResource("QQWry.dat")
.toString());
System.out.println(IP_FILE);
System.out.println("IP地址信息文件没有找到，IP显示功能将无法使用");
ipFile = null;
}
// 如果打开文件成功，读取文件头信息
if (ipFile != null) {
try {
ipBegin = readLong4(0);
ipEnd = readLong4(4);
if (ipBegin == -1 || ipEnd == -1) {
ipFile.close();
ipFile = null;
}
} catch (IOException e) {
System.out.println("IP地址信息文件格式有错误，IP显示功能将无法使用");
ipFile = null;
}
}
}
/**
* @return 单一实例
*/
public static IPSeeker getInstance() {
return instance;
}
/**
* 给定一个地点的不完全名字，得到一系列包含s子串的IP范围记录
*
* @param s
* 地点子串
* @return 包含IPEntry类型的List
*/
public List getIPEntriesDebug(String s) {
List ret = new ArrayList();
long endOffset = ipEnd + 4;
for (long offset = ipBegin + 4; offset <= endOffset; offset += IP_RECORD_LENGTH) {
// 读取结束IP偏移
long temp = readLong3(offset);
// 如果temp不等于-1，读取IP的地点信息
if (temp != -1) {
IPLocation loc = getIPLocation(temp);
// 判断是否这个地点里面包含了s子串，如果包含了，添加这个记录到List中，如果没有，继续
if (loc.country.indexOf(s) != -1 || loc.area.indexOf(s) != -1) {
IPEntry entry = new IPEntry();
entry.country = loc.country;
entry.area = loc.area;
// 得到起始IP
readIP(offset - 4, b4);
entry.beginIp = Utils.getIpStringFromBytes(b4);
// 得到结束IP
readIP(temp, b4);
entry.endIp = Utils.getIpStringFromBytes(b4);
// 添加该记录
ret.add(entry);
}
}
}
return ret;
}
/**
* 给定一个地点的不完全名字，得到一系列包含s子串的IP范围记录
*
* @param s
* 地点子串
* @return 包含IPEntry类型的List
*/
public List getIPEntries(String s) {
List ret = new ArrayList();
try {
// 映射IP信息文件到内存中
if (mbb == null) {
FileChannel fc = ipFile.getChannel();
mbb = fc.map(FileChannel.MapMode.READ_ONLY, 0, ipFile.length());
mbb.order(ByteOrder.LITTLE_ENDIAN);
}
int endOffset = (int) ipEnd;
for (int offset = (int) ipBegin + 4; offset <= endOffset; offset += IP_RECORD_LENGTH) {
int temp = readInt3(offset);
if (temp != -1) {
IPLocation loc = getIPLocation(temp);
// 判断是否这个地点里面包含了s子串，如果包含了，添加这个记录到List中，如果没有，继续
if (loc.country.indexOf(s) != -1
|| loc.area.indexOf(s) != -1) {
IPEntry entry = new IPEntry();
entry.country = loc.country;
entry.area = loc.area;
// 得到起始IP
readIP(offset - 4, b4);
entry.beginIp = Utils.getIpStringFromBytes(b4);
// 得到结束IP
readIP(temp, b4);
entry.endIp = Utils.getIpStringFromBytes(b4);
// 添加该记录
ret.add(entry);
}
}
}
} catch (IOException e) {
System.out.println(e.getMessage());
}
return ret;
}
/**
* 从内存映射文件的offset位置开始的3个字节读取一个int
*
* @param offset
* @return
*/
private int readInt3(int offset) {
mbb.position(offset);
return mbb.getInt() & 0x00FFFFFF;
}
/**
* 从内存映射文件的当前位置开始的3个字节读取一个int
*
* @return
*/
private int readInt3() {
return mbb.getInt() & 0x00FFFFFF;
}
/**
* 根据IP得到国家名
*
* @param ip
* ip的字节数组形式
* @return 国家名字符串
*/
public String getCountry(byte[] ip) {
// 检查ip地址文件是否正常
if (ipFile == null)
return "错误的IP数据库文件";
// 保存ip，转换ip字节数组为字符串形式
String ipStr = Utils.getIpStringFromBytes(ip);
// 先检查cache中是否已经包含有这个ip的结果，没有再搜索文件
if (ipCache.containsKey(ipStr)) {
IPLocation loc = (IPLocation) ipCache.get(ipStr);
return loc.country;
} else {
IPLocation loc = getIPLocation(ip);
ipCache.put(ipStr, loc.getCopy());
return loc.country;
}
}
/**
* 根据IP得到国家名
*
* @param ip
* IP的字符串形式
* @return 国家名字符串
*/
public String getCountry(String ip) {
return getCountry(Utils.getIpByteArrayFromString(ip));
}
/**
* 根据IP得到地区名
*
* @param ip
* ip的字节数组形式
* @return 地区名字符串
*/
public String getArea(byte[] ip) {
// 检查ip地址文件是否正常
if (ipFile == null)
return "错误的IP数据库文件";
// 保存ip，转换ip字节数组为字符串形式
String ipStr = Utils.getIpStringFromBytes(ip);
// 先检查cache中是否已经包含有这个ip的结果，没有再搜索文件
if (ipCache.containsKey(ipStr)) {
IPLocation loc = (IPLocation) ipCache.get(ipStr);
return loc.area;
} else {
IPLocation loc = getIPLocation(ip);
ipCache.put(ipStr, loc.getCopy());
return loc.area;
}
}
/**
* 根据IP得到地区名
*
* @param ip
* IP的字符串形式
* @return 地区名字符串
*/
public String getArea(String ip) {
return getArea(Utils.getIpByteArrayFromString(ip));
}
/**
* 根据ip搜索ip信息文件，得到IPLocation结构，所搜索的ip参数从类成员ip中得到
*
* @param ip
* 要查询的IP
* @return IPLocation结构
*/
private IPLocation getIPLocation(byte[] ip) {
IPLocation info = null;
long offset = locateIP(ip);
if (offset != -1)
info = getIPLocation(offset);
if (info == null) {
info = new IPLocation();
info.country = "未知国家";
info.area = "未知地区";
}
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