C++查詢wry.dat中的IP地址信息代码

直接上代碼

//#include <stdio.h>
#include <stdlib.h>
#include <windows.h>
#include <iostream>
#include <fstream>
#include <iomanip>

using namespace std;

//#define _DEBUG_

long read4Bit(ifstream& f);
long read3Bit(ifstream& f);
int  readString(ifstream& f, long exeOffset, char *str);
int  read2Zero(ifstream& f, char*buf);
int findIPLocation(char*dat, long exeOffset, DWORD searchIpNum);
void printHelp(char* exePath);
DWORD convertIP(char*sip);
void printIpNum(DWORD ip);

int main(int argc, char**argv)...{
    char *sip;
    char *dat;  long offSet;

    DWORD intIP;
#if defined _DEBUG_
    //for(int i=0;i<argc; i++){
    //    cout<<\"argv[\"<<i<<\"/\"<<argc<<\"]=\"<<argv[i]<<\" \";
    //}
#endif
    dat=new char[256];
    memset(dat, 0, 256);
    if( argc==3 )...{
        strcpy(dat, argv[2]);
        offSet=0L;
    }else...{
        delete[]dat;
        printHelp(argv[0]);
        return 1;
    }

    sip=new char[16];
    memset(sip, 0, 16);
    strcpy(sip, argv[1]);
    intIP = convertIP(sip);
    findIPLocation(dat, offSet, intIP);

    delete[]dat;    delete[]sip;

    return 0;
}

//第一個參數是數據文件
//第二個參數是如果合併成一個文件的話,開始的偏移
//第三個參數是查找的IP的十進制表達
//第四個參數是返回的結果
int findIPLocation(char*dat, long exeOffset,DWORD searchIpNum) ...{
#if defined _DEBUG_
    int times=0;  //查找了多少次
#endif

    DWORD ipBeginPos, ipEndPos; //開始的偏移,結束的偏移 [Page]
    DWORD midNum, beginNum, endNum, totalNum;  //中間的個數,開始的個數,結束的個數,總共的個數
    DWORD ip1Num, ip2Num;       //開始IP的十進制值,結束IP的十進制值
    long pos, iRead;                //當前的文件的指針的位置
    char *ipAddr; //*ipAddr2, *ipAddr1, *ipAddr;

    if(searchIpNum<0xFF)...{
        return -1;
    }

    ifstream fs;
    fs.open(dat, ios::binary | ios::in, 0);

    if((!fs.is_open()) || (!fs.good())) ...{
        return -2;
    }

#if defined _DEBUG_
    cout<<\" searchIpNum=\"<<searchIpNum<<\", exeOffset=\"<<exeOffset<<endl;
#endif
    fs.seekg(exeOffset, ios_base::beg);
    ipBeginPos=read4Bit(fs);
#if defined _DEBUG_
    cout<<\" ipBeginPos=\"<<ipBeginPos<<endl;
#endif
    ipEndPos=read4Bit(fs);
#if defined _DEBUG_
    cout<<\" ipEndPos=\"<<ipEndPos<<endl;
#endif
    totalNum = (ipEndPos - ipBeginPos) / 7;
#if defined _DEBUG_
    cout<<\" totalNum=\"<<totalNum<<endl;
#endif
    if(totalNum<1)...{
        return -3;
    }

    beginNum = 0;
    endNum   = totalNum;
    while( 1 ) ...{ //IP的索引是有順序的,按照個數來二分查找.

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