Re: Get ASCII value for character when higher than 127

For a while, I thought everything worked fine, but now I'm running
into a really weird problem. In some cases, the XOR on the '\0'
character is not done correctly, with the result that I get a
different (not readable) character back in C# in stead of a '\0'. This
happens for some ending characters, not all.

string GetPwdFilePath()
{
     const char* timeStringFormat = "%Y-%m-%d_%H-%M-%S";
     const size_t timeStringLength = 20;
     char timeString[timeStringLength] = { 0 };
     time_t t = time(0);
     tm *curTime = localtime(&t);
     strftime(timeString, timeStringLength,
         timeStringFormat, curTime);

     string path("C:\\PwdSync\\pwds\\");
     path.append(timeString);
     path.append(".pwd");

     free(timeString);

      return path;
}

string GetLogFilePath()
{
     const char* timeStringFormat = "%Y%m%d";
     const size_t timeStringLength = 20;
     char timeString[timeStringLength] = { 0 };
     time_t t = time(0);
     tm *curTime = localtime(&t);
     strftime(timeString, timeStringLength,
         timeStringFormat, curTime);

     string path("C:\\PwdSync\\log\\pwdlog_");
     path.append(timeString);
     path.append(".txt");

   free(timeString);

      return path;
}

string ObfuscateUnicodeString(LPCWSTR pwszIn, USHORT nLen)
{
     ostringstream oss;
     oss << right;

     int k = GetNextXORVal(0);
     for(size_t i = 0; i < nLen; ++i)
     {
         int ch = pwszIn[i]^k;
         k = GetNextXORVal(k) ;

         oss << setw(7) << setfill('0') << ch;
     }
     string result = oss.str();
     oss.clear();

     return result;
}

void WriteLogMessage(
     const string& path,
     const string& logmsg,
     const string username
)
{
    const char* timeStringFormat = "%H:%M:%S";
    const size_t timeStringLength = 20;
    char timeString[timeStringLength] = { 0 };
    time_t t = time(0);
    tm *curTime = localtime(&t);
    strftime(timeString, timeStringLength,
        timeStringFormat, curTime);

    ofstream outPwd(path.c_str(), ios::app);
    if (!outPwd)
    {
        ofstream outPwd(path.c_str(), ios::out );
    }

    outPwd << timeString << " - " << logmsg << username << "\n";
    outPwd.close();
    free(timeString);

}