提取s60v5微信的本地存储文件内容代码,Java代码库,德仔网

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【Java】提取s60v5微信的本地存储文件内容

作者:price / 发布于2012/6/12/ 637

S60V5系统的微信消息提取,献给还在用塞班的童鞋和师妹,代码参考umdbuilder,主要提取msg和contact,难免存在bug,可用UltraEdit查看文件的16进制存储格式，开始的0x40内容具体意义不详。其后则是连续的存储单元,有些是固定大小的，有些是固定大小的整数倍，恕不详述。有些字段的意义不详，可自行摸索。

<div>/*
* To change this template, choose Tools | Templates
* and open the template in the editor.
*/
package org.youyou.weixin.reader;</div>
import org.youyou.weixin.reader.MMBlockData;
import org.youyou.weixin.reader.MMBlockFunc;
import java.io.*;
import org.price.util.FileUtil;</div>
<div>/**
*
* @author Verse
*/
public abstract class BaseReader {</div>
<div> protected int pointer = 0;
 protected int baseBlockLen = 0x88;
 protected int headLen = 0x40;
 protected MMBlockFunc blockFunc = new MMBlockFunc();
 protected byte[] bytes = null;</div>
<div> public BaseReader() {
 }
<div> public BaseReader(byte[] bytes) {
 this.bytes = bytes;
 }
<div> public void init() {
 }
<div> public void read() throws IOException {
 parseHeader();
 try {
 readBlocks();
 } catch (Exception e) {
 }
<div>
 for (MMBlockData block : blockFunc.getDatas()) {
 parseBlock(block);
 }
 }
<div> public void setHeadLen(int headLen) {
 this.headLen = headLen;
 }
<div> protected int getStr(byte[] bytes, int start, int len, ByteArrayOutputStream out) {</div>
<div> if (start % baseBlockLen == 0) {
 start += 0x10;
 }
 while ((start + len) / baseBlockLen != (start) / baseBlockLen) {
 int baseline = (start / baseBlockLen) * baseBlockLen;
 if (start % baseBlockLen != 0) {
 baseline += baseBlockLen;
 }
 out.write(bytes, start, baseline - start);
 len = len - (baseline - start);
 start = baseline + 0x10;
 }
 out.write(bytes, start, len);
 start = start + len;
 return start;
 }
<div> protected int addOffset(int point, int offset) {
 if (point % baseBlockLen == 0) {
 point += 0x10;
 }
 while ((point + offset) / baseBlockLen != (point) / baseBlockLen) {
 int baseline = (point / baseBlockLen) * baseBlockLen;
 if (point % baseBlockLen != 0) {
 baseline += baseBlockLen;
 }
 offset = offset - (baseline - point);
 point = baseline + 0x10;
 }
<div> return point + offset;</div>
<div> }
<div> public int bytesToInt(byte... bytes) {
 return FileUtil.bytesToInt(bytes);
 }
<div> public static String getString2(byte[] bytes) {</div>
<div> return getString2(bytes, 0, -1);
 }
<div> public static String getString2(byte[] bytes, int stat_p) {</div>
<div> return getString2(bytes, stat_p, -1);
 }
<div> public static String getString2(byte[] bytes, int stat_p, int end_p) {
 int point = stat_p;
 if (end_p < 0) {
 end_p = bytes.length;
 }
 for (; point < end_p; point++) {
 if (bytes[point] == (byte) 0x00) {
 break;
 }
 }
 String result = null;
 try {
 result = new String(bytes, stat_p, point - stat_p, "utf-8");
 } catch (Exception e) {
 }
 return result;
 }
<div> public void setPointer(int pointer) {
 this.pointer = pointer;
 }
<div> public void setBaseBlockLen(int baseBlockLen) {
 this.baseBlockLen = baseBlockLen;
 }
<div> public abstract void parseBlock(MMBlockData block);</div>
<div> public abstract void parseHeader();</div>
<div> public abstract void readBlocks();</div>
<div> protected boolean isInvalidBlock(byte[] datas) {</div>
<div> if (datas.length < 4) {
 return false;
 }
 for (int j = 0; j < 4; j++) {
 byte b = datas[j];
 if (b != (byte) 0xFF) {
 return false;
 }
 }
 for (int j = 4; j < this.baseBlockLen; j++) {
 byte b = datas[j];
 if (b != 0) {
 return false;
 }
 }
 return true;
 }
<div> public MMBlockFunc getBlockFunc() {
 return blockFunc;
 }
<div> public void setBlockFunc(MMBlockFunc blockFunc) {
 this.blockFunc = blockFunc;
 }
<div> public int getBaseBlockLen() {
 return baseBlockLen;
 }
}
</div>

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