C++ 获取ip地址归属地，终端设备地理位置

#include "cipaddressex.h" #include "cipaddressex.h" #include <QDebug> #include <string.h> #pragma warning(disable:4267) #define EMPTY_STRING _T("") #define UNKNOW_STRING "未知" #define MODE1 0x01 #define MODE2 0x02 CIpAddressEx::CIpAddressEx(const IP& ip) : m_pFile(NULL),m_nStartIndex(0),m_nEndIndex(0) { m_Ip = ip; GetInformation(); } CIpAddressEx::~CIpAddressEx(void) { if (m_pFile && m_pFile->IsValid()) { m_pFile->Close(); delete m_pFile; m_pFile = NULL; } } void CIpAddressEx::GetInformation() { if ( OpenFile() ) { unsigned int uIpRecordOffset = SearchIp(); if (uIpRecordOffset) { if (MODE1 == GetValueByBytes(uIpRecordOffset + 4,1)) { unsigned int uSecondOffset = GetValueByBytes(uIpRecordOffset+5,3); if (MODE2 == GetValueByBytes(uSecondOffset,1)) { unsigned int uCountryLastOffset = GetValueByBytes(uSecondOffset+1,3); ExtractCountryValue(uCountryLastOffset); unsigned int uAreaMode = GetValueByBytes(uSecondOffset+4,1); if (MODE1 == uAreaMode || MODE2 == uAreaMode) { unsigned int uAreaLastOffset = GetValueByBytes(uSecondOffset+5,3); ExtractAreaValue(uAreaLastOffset); } else { ExtractAreaValue(uSecondOffset+4); } } else { int nCountryLength = ExtractCountryValue(uSecondOffset); if (MODE1 == GetValueByBytes(nCountryLength + 1 + uSecondOffset,1) || MODE2 == GetValueByBytes(nCountryLength + 1 + uSecondOffset,1)) { ExtractAreaValue(GetValueByBytes(nCountryLength + 1 + uSecondOffset + 1,3)); } else { ExtractAreaValue(nCountryLength + 1 + uSecondOffset); } } } else if (MODE2 == GetValueByBytes(uIpRecordOffset + 4,1)) { unsigned int uCountryOffset = GetValueByBytes(uIpRecordOffset + 5,3 ); ExtractCountryValue(uCountryOffset); ExtractAreaValue(uIpRecordOffset + 8); } else { int nCountryLength = ExtractCountryValue(uIpRecordOffset+4); ExtractAreaValue(nCountryLength + 1 + uIpRecordOffset + 4); } } if (m_pFile && m_pFile->IsValid()) { m_pFile->Close(); delete m_pFile; m_pFile = NULL; } } } const std::string& CIpAddressEx::GetIpCountry() { return m_strIpCountry; } const std::string& CIpAddressEx::GetIpArea() { return m_strIpArea; } unsigned int CIpAddressEx::GetValueByBytes(unsigned int uStart,int nLength) { unsigned int *multiVal = (unsigned int*)malloc(nLength * sizeof(unsigned int)); unsigned char *pBuf = (unsigned char*)malloc(nLength * sizeof(unsigned char)); unsigned int uResult = 0; //初始化数组 memset(pBuf,0,nLength * sizeof(unsigned char)); if (m_pFile && nLength < 5) { m_pFile->Seek(uStart,CLocalFile::begin); for (int i = 0;i < nLength;i++) { m_pFile->Read((char*)pBuf,1); multiVal[i] = (char)*pBuf & 0x000000FF; pBuf++; } pBuf -= nLength; for (int i = nLength-1;i >= 0;i--) { uResult = uResult * 0x100 + multiVal[i]; } } free(multiVal); free(pBuf); return uResult; } unsigned int CIpAddressEx::ConstructIp() { unsigned int valArr[4]; valArr[0] = 0x000000FF & m_Ip.bFirst; valArr[1] = 0x000000FF & m_Ip.bSecond; valArr[2] = 0x000000FF & m_Ip.bThird; valArr[3] = 0x000000FF & m_Ip.bFourth; unsigned int uResult = 0; for (int i = 0;i < 4;i++) { uResult = uResult * 0x100 + valArr[i]; } return uResult; } unsigned int CIpAddressEx::SearchIp() { unsigned int uIpAddress = ConstructIp(); unsigned int uCurrentRecord = 0; unsigned int uTopIndex = m_nStartIndex,uBottomIndex = m_nEndIndex; unsigned int uCurrentIndex = (( uBottomIndex - uTopIndex) / 7 / 2) * 7 + uTopIndex; //二分查找 do { uCurrentRecord = GetValueByBytes(uCurrentIndex,4); if ( uCurrentRecord > uIpAddress ) { uBottomIndex = uCurrentIndex; uCurrentIndex = (( uBottomIndex - uTopIndex) / 7 / 2) * 7 + uTopIndex; } else { uTopIndex = uCurrentIndex; uCurrentIndex = (( uBottomIndex - uTopIndex) / 7 / 2) * 7 + uTopIndex; } } while ( uBottomIndex > uTopIndex + 7); //返回结果 return GetValueByBytes(uCurrentIndex+4,3); } bool CIpAddressEx::OpenFile() { if (!m_pFile) { m_pFile = new CLocalFile(QQ_WRY, CLocalFile::modeRead | CLocalFile::typeBinary); if (!m_pFile->IsValid()) { delete m_pFile; m_pFile = NULL; qDebug()<<"无法打开文件，请检查文件路径是否正确"; return false; } } m_pFile->SeekToBegin(); if (m_pFile->IsValid()) { if (4 == m_pFile->Read((char*)&m_nStartIndex,4) && 4 == m_pFile->Read((char*)&m_nEndIndex,4)) { return true; } } m_pFile->Close(); delete m_pFile; m_pFile = NULL; return false; } std::string CIpAddressEx::ExtractString(unsigned int uOffset) { std::string strResult; if (m_pFile) { m_pFile->Seek(uOffset,CLocalFile::begin); char pCountry[MAX_PATH]; char *pCountryReader = (char*)pCountry; memset(pCountry,0,MAX_PATH * sizeof(char)); do { m_pFile->Read(pCountryReader,1); pCountryReader++; } while (pCountryReader - pCountry < MAX_PATH && pCountry[ pCountryReader - pCountry-1] != 0 ); strResult = pCountry; } return strResult; } int CIpAddressEx::ExtractAreaValue(unsigned int uOffset) { m_strIpArea = ExtractString(uOffset); int nLength = m_strIpArea.length(); if (m_strIpArea.empty()) { m_strIpArea = UNKNOW_STRING; } return nLength; } int CIpAddressEx::ExtractCountryValue(unsigned int uOffset) { m_strIpCountry = ExtractString(uOffset); int nLength = m_strIpCountry.length(); if (m_strIpCountry.empty()) { m_strIpCountry = UNKNOW_STRING; } return nLength; }