/* serverc.c */
/* The source file containing functions whose purpose is to communicate with the backend server or device.
   These functions also verify all data recieved from the server/device and return either a 0, 1 or 2. */
/* (c) 2008 by ccfreak2k */

getCurrentFunds() {
	/* NOTE: Returns a 1 if there was a verification error. */
	/* Get the current funds from the server. */
	int playerID;
	int currentFunds;

	outport(3,playerID); /* Start crafting the packet. */
	outport(4,GETCURRENTFUNDSAID);

	outport(6,1); /* Raise the trigger to signal the gate to dispatch the packet. */

	while (true == true) { /* Wait for the packet muxer to lower the trigger. */
		if (inport(6) == 1) {
			outport(6,0); /* But set the flag down first. */
			/* Trigger lowered; read and verify the values. */
			if (inport(3) != playerID)
				return 1;
			else if (inport(3) == FLAGACCOUNTAID)
				return 2;
			else if (inport(3) != GETCURRENTFUNDSAID)
				return 1;
			else
				/* Both values are ok, so give the current funds and signal success. */
				currentFunds = inport(11);
				return 0;
		}
	}
}

setCurrentFunds(a,b) int a,b; {
	/* NOTE: Expects two ints: which action to perform, and how much money to w/d. */
	/* NOTE: Returns a 1 if there was a verification error. */
	/* NOTE: Returns a 2 on a funds mismatch (it also calls sendFlagPacket() automatically when this happens). */
	/* Tell the server to perform a withdrawl/deposit. */
	int playerID;
	int currentFunds;

	outport(3,playerID); /* Start crafting the packet. */
	outport(4,a);
	outport(5,b);

	outport(6,1); /* Raise the trigger to signal the gate to dispatch the packet. */

	switch (a) { /* Do some math while we wait. */
		case WITHDRAWFUNDSAID: currentFunds -= b;
		case DEPOSITFUNDSAID: currentFunds += b;
	}

	while (true == true) { /* Wait for the packet muxer to lower the trigger. */
		if (inport(6) == 0) { /* Start verifying the information. */
			outport(6,0); /* But set the flag down first. */
			if (inport(3) != playerID)
				return 1;
			else if (inport(3) != a)
				return 1;
			else if (inport(11) != currentFunds) { /* This is a special case that requires a new packet to be sent. */
				sendFlagPacket();
				return 2; /* Special code that we send if the account was flagged. */
      }
			else
				return 0; /* Success! */
		}
	}
} 

sendFlagPacket() {
	/* Sends a packet to flag the account because of funds mismatch. */
	int playerID;

	outport(3,playerID);
	outport(4,FLAGACCOUNTAID);

	outport(6,1);

	while (true == true) {
		if (inport(6) == 0)
			return;
	}
}