// testApp.cpp : Defines the entry point for the console application.
//justsomeRandomUser|ffee6cff9bffc173ffa732ff8cffcfffdfffc8ffde0bffde1e31ff88ff91|SPECIAL|ADMIN
#include "openssl\des.h"

#include <stdio.h>
#include <Windows.h>
#include <string>
#include <iostream>
#include "stdafx.h"
#include "windows.h"
#include <string>
#include <iostream>
#include <algorithm>
#include <stdexcept>
#include <iomanip>
#include <sstream>
#include <openssl/evp.h>
#include <openssl/pem.h>
#include <openssl/aes.h>
#include <openssl/err.h>
#include <stdio.h>
#include <string>
#include <string.h>
#include "ServerCrypto.h"
#include <exception>

using namespace std;

void to_hex(char* inut,char* output,int size )
{
	std::stringstream s;
	s.fill('0');
	for ( size_t i = 0 ; i < size ; ++i )
		s << std::setw(2) << std::hex << (unsigned short)inut [i];

	strcpy(output,s.str().c_str());

}


bool login( char* username,char* password)
{
	try
	{

		unsigned char* encryptionKey=(unsigned char*)"gertrud";
		static ServerCrypto sc;

		int encMsgLen=0;

		if((encMsgLen = sc.aesEncrypt(username, &encryptionKey)) == -1)
		{
			return false;
		}

		int encryptedUsernameLength=(strlen((const char*)encryptionKey)*2)+1;

		char* encryptedUsernameAsHex=new  char[encryptedUsernameLength]();

		to_hex((char*)encryptionKey,encryptedUsernameAsHex,encMsgLen);

		if(!strcmp(encryptedUsernameAsHex ,password))
		{
			return false;
		}
		else
		{
			char errorMessage[512];
			sprintf(errorMessage,"Login failed for %s using password %s",username,password);
			printf("%s",errorMessage);
		}
	}
	catch(exception& e)
	{
		printf("%s",  e.what());
	}
}

char* ReadFile(char *filename)
{
	char *buffer = NULL;
	int string_size,read_size;
	FILE *handler = fopen(filename,"rb");

	if (handler)
	{
		//seek the last byte of the file
		fseek(handler,0,SEEK_END);
		//offset from the first to the last byte, or in other words, filesize
		string_size = ftell (handler);
		//go back to the start of the file
		rewind(handler);

		//allocate a string that can hold it all
		buffer = new char[string_size +1 ]() ;
		//read it all in one operation
		read_size = fread(buffer,sizeof(char),string_size,handler);
		//fread doesnt set it so put a \0 in the last position
		//and buffer is now officialy a string


		if (string_size != read_size) {
			//something went wrong, throw away the memory and set
			//the buffer to NULL
			delete[] buffer;
			buffer = NULL;
		}
	}

	return buffer;
}


int main(int argc, char* argv[])
{

		char* input=ReadFile("C:\\input.bin");

		char*  username = strtok (input,"|");
		char*  password = strtok (NULL,"|");

		if( login(username,password))
		{
				printf("Welcome %s",username);
		}

		delete[] input;

	return 0;
}