纯真版IP数据库查询代码
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站长推荐:NSetup一键部署软件
一键式完成美化安装包制作，自动增量升级，数据统计，数字签名。应对各种复杂场景，脚本模块化拆分，常规复杂的脚本代码，图形化设置。无需专业的研发经验，轻松完成项目部署。(www.nsetup.cn)
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//纯真版IP数据库检索程序 //code by davies //patch by Julien Woo #include <stdio.h> #include <stdlib.h> #include <string> #include <sstream> #include <iostream> #include <fstream> #include <strstream> using namespace std; typedef unsigned int IP_TYPE; const int IP_SIZE = 4; const int OFFSET_SIZE = 3; const int INDEX_RECORD_SIZE = IP_SIZE + OFFSET_SIZE; class IpLocater{ private: FILE* dbfile; int first_index; int last_index; enum {REDIRECT_MODE_1 = 0x01,REDIRECT_MODE_2 = 0x02}; protected: public: IpLocater( const string dbfilename = "QQWry.Dat" ) { dbfile = fopen(dbfilename.c_str(),"rb"); if( !dbfile ){ printf("can not open the ip db file %s\n",dbfilename.c_str()); exit(0); } fread(&first_index,sizeof(int),1,dbfile); fread(&last_index,sizeof(int),1,dbfile); } ~IpLocater(){ fclose(dbfile); } int getRecordCount() const { return (last_index - first_index ) / INDEX_RECORD_SIZE + 1; } string readString(const int offset = 0){ if ( offset ) { fseek(dbfile,offset,SEEK_SET); } char ch = fgetc(dbfile); ostringstream sstr ; while ( ch != 0 && ch != EOF ) { sstr << ch; ch = fgetc(dbfile); } return sstr.str(); } inline int readInt3(const int offset = 0 ){ if ( offset ) { fseek(dbfile,offset,SEEK_SET); } int result = 0; fread(&result,sizeof(char),3,dbfile); return result; } string readAreaAddr(const int offset = 0){ if ( offset ) { fseek(dbfile,offset,SEEK_SET); } char b = fgetc(dbfile); if ( b == REDIRECT_MODE_1 || b == REDIRECT_MODE_2) { int areaOffset=0; fread(&areaOffset,1,3,dbfile); if ( areaOffset ) { return readString( areaOffset ); }else{ return "Unkown"; } }else{ fseek(dbfile,-1,SEEK_CUR); return readString(); } } unsigned int readLastIp(const int offset){ fseek(dbfile,offset,SEEK_SET); unsigned int ip = 0; fread(&ip,sizeof(unsigned int),1,dbfile); return ip; } string readFullAddr(const int offset,int ip = 0 ){ string address = ""; fseek(dbfile,offset+4,SEEK_SET); char ch = fgetc(dbfile); if ( ch == REDIRECT_MODE_1 ) { // //cout<<"REDIRECT_MODE_1"; int countryOffset = 0; fread(&countryOffset,sizeof(char),3,dbfile); fseek(dbfile,countryOffset,SEEK_SET); char byte = fgetc(dbfile); if ( byte == REDIRECT_MODE_2 ) { int p = 0; fread(&p,1,3,dbfile); address = readString(p); fseek(dbfile,countryOffset+4,SEEK_SET); }else{ address = readString(countryOffset); } address += " "; address += readAreaAddr(); // current position }else if ( ch == REDIRECT_MODE_2 ) { //cout<<"REDIRECT_MODE_2"; int p = 0; fread(&p,1,3,dbfile); address = readString(p); address += " "; address += readAreaAddr( offset + 8); } else{ fseek(dbfile,-1,SEEK_CUR); address = readString(); address += " "; address += readAreaAddr(); } return address; } void printAddr(int first = 0, int count = 100){ int record_count = getRecordCount(); for( int i = first; i< first+count && i<record_count; i++ ) { fseek(dbfile,i*INDEX_RECORD_SIZE+first_index,SEEK_SET); unsigned int ip = 0; fread(&ip,sizeof(unsigned int),1,dbfile); int offset = 0; fread(&offset,1,OFFSET_SIZE,dbfile); cout << ip2string( ip ) << "-" << ip2string( readLastIp(offset) ) << readFullAddr( offset ) << endl; } } int find(unsigned int ip,int left ,int right){ if ( right-left == 1) { return left; }else{ int middle = (left + right) / 2; int offset = first_index + middle * INDEX_RECORD_SIZE; fseek(dbfile,offset,SEEK_SET); unsigned int new_ip = 0; fread(&new_ip,sizeof(unsigned int),1,dbfile); if ( ip >= new_ip ) { return find(ip,middle,right); }else{ return find(ip,left,middle); } } } string getIpAddr( unsigned int ip){ int index = find(ip,0, getRecordCount() - 1 ); int index_offset = first_index + index * INDEX_RECORD_SIZE + 4; int addr_offset = 0; fseek(dbfile,index_offset,SEEK_SET); fread(&addr_offset,1,3,dbfile); string address = readFullAddr( addr_offset,ip ); return address; } string ip2string( unsigned int ip) const{ ostringstream sstr; sstr << ((ip & 0xff000000)>>24) ; sstr << "." << ((ip & 0xff0000)>>16); sstr << "." << ((ip & 0xff00)>>8); sstr << "." << (ip & 0xff); return sstr.str(); } unsigned int string2ip(const string ipstr)const{ string str = ipstr; unsigned int ip = 0; int p = 0; p = str.find("."); ip += atoi(str.substr(0,p).c_str()); ip <<= 8; str = str.substr(p+1,str.length()); p = str.find("."); ip += atoi(str.substr(0,p).c_str()); ip <<= 8; str = str.substr(p+1,str.length()); p = str.find("."); ip += atoi(str.substr(0,p).c_str()); ip <<= 8; ip += atoi(str.substr(p+1,str.length()).c_str()); return ip; } string getIpAddr(string ip){ return getIpAddr( string2ip( ip ) ); } }; int main(int argc, char* argv[]) { IpLocater locater("D:\\Dev\\ipseek\\QQWry.Dat"); ifstream input("ip.txt",ios::in); string str; ofstream output("out.txt",ios::out); while (!input.eof()) { getline(input,str); cout << str << " " << locater.getIpAddr( str ) << endl; output << str << " " << locater.getIpAddr( str ) << endl; } input.close(); output.close(); return 0; } |
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