forked from mirrors/linphone-iphone
98 lines
2 KiB
C++
98 lines
2 KiB
C++
#include "codechecker.hh"
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#include <arpa/inet.h>
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#include <string.h>
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#include <ctype.h>
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#include "decodetable.cc"
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using namespace BitLib;
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namespace axcodechecker{
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CodeChecker * CodeChecker::sUnique=0;
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CodeChecker * CodeChecker::get(){
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if (sUnique==0)
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sUnique=new CodeChecker();
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return sUnique;
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}
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CodeChecker::CodeChecker(){
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memset(mIpAddress,0,sizeof(mIpAddress));
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memset(mCode,0,sizeof(mCode));
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memset(mNumber,0,sizeof(mNumber));
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}
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static UInt64 hexStringToUint64(const char *str){
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return strtoll(str,NULL,16);
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}
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CodeChecker::Result CodeChecker::validate(){
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UInt64 key = hexStringToUint64(mCode);
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key = Bit::Swizzle(key, decodeTable, decodeTableLen);
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UInt32 ip = (UInt32)(key >> 16);
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byte phoneHash = (byte)(key >> 8);
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byte crc = (byte)key;
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byte b1 = (byte)(phoneHash & 0xff);
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byte b2 = (byte)(ip & 0xff);
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byte b3 = (byte)((ip >> 8) & 0xff);
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byte b4 = (byte)((ip >> 16) & 0xff);
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byte b5 = (byte)((ip >> 24) & 0xff);
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byte crc2 = (byte)(b5 ^ b1 ^ b4 ^ b2 ^ b3);
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if (crc == crc2)
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{
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if (phoneHash == sdbmHash(mNumber))
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{
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struct in_addr ia;
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ia.s_addr=htonl(ip);
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inet_ntop(AF_INET,&ia,mIpAddress,sizeof(mIpAddress));
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return Ok;
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}
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else
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{
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return WrongPhoneNumber;
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}
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}
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return WrongCode;
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}
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byte CodeChecker::sdbmHash(const char *str){
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uint hash = 0;
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int i;
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int ch;
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for(i=0;str[i]!='\0';++i){
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ch=str[i];
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hash = ch + (hash << 6) + (hash << 16) - hash;
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}
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return (byte)hash;
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}
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void CodeChecker::setCode(const char *code){
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strncpy(mCode,code,sizeof(mCode));
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}
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void CodeChecker::setPhoneNumber(const char *phoneNumber){
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strncpy(mNumber,phoneNumber,sizeof(mNumber));
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}
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}
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extern "C" const char* axtunnel_get_ip_from_key(const char* phone,const char* key) {
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axcodechecker::CodeChecker::get()->setPhoneNumber(phone);
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axcodechecker::CodeChecker::get()->setCode(key);
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axcodechecker::CodeChecker::Result result=axcodechecker::CodeChecker::get()->validate();
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if (result == axcodechecker::CodeChecker::Ok) {
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return axcodechecker::CodeChecker::get()->getIpAddress();
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} else {
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return 0;
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}
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}
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