Method authenticate

examples/extauth/ExtAuth.cpp:202–297

};

int ExtAuthClient::authenticate(ThrowStatusWrapper* status, IClientBlock* cBlock)
{
	try
	{
		// did we initialize correctly?
		if (iniLvl < 3)
			return AUTH_CONTINUE;

		// check for missing login from the user
		if ((!ignoreLogin) && cBlock->getLogin())
			return AUTH_CONTINUE;

		// check for missing password from the user
		if ((!ignorePassword) && cBlock->getPassword())
			return AUTH_CONTINUE;

		// check for presence of authenticatiion block
		IAuthBlock* authBlock = cBlock->getAuthBlock(status);
		if (!authBlock)
			return AUTH_CONTINUE;
		if (!authBlock->first(status))
			return AUTH_CONTINUE;

		// and for presence of user name in that authenticatiion block
		const char* login = NULL;
		do
		{
			const char* type = authBlock->getType();
			if (type && (strcmp(type, "USER") == 0))
			{
				login = authBlock->getName();
				if (login)
					break;
			}
		} while(authBlock->next(status));
		if (!login)
			return AUTH_CONTINUE;

		// check if server started to talk to us
		unsigned dl = 0;
		const unsigned char* data = cBlock->getData(&dl);
		if (dl == 0 || !data)
			return AUTH_MORE_DATA;

		// decrypt message
		unsigned char bytes[RANDSIZE + LOGINSIZE + 1];
		unsigned long outlen = RANDSIZE;
		int result = 0;
		check(status, rsa_decrypt_key(data, dl, bytes, &outlen, NULL, 0, hash.index, &result, &privateKey),
			"Error decrypting message");
		if (outlen < RANDSIZE)
			error(status, "Malformed data from server - missing random block");

		// next append login to random block
		unsigned len = strlen(login);
		if (len > LOGINSIZE)
			len = LOGINSIZE;
		memcpy(&bytes[RANDSIZE], login, len);