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#include <sys/types.h>
#include <sys/socket.h>
#include <stdlib.h>
#include <stdio.h>
#include <assert.h>
#include "net.h"
bool net_recv(int sock, const msg_type_t type)
{
msg_t m;
bool result;
ssize_t len = recv(sock, &m.hdr, sizeof(msg_header_t), MSG_PEEK); // just peek into packet to determine message header
assert(len != -1);
if(m.hdr.type != type)
{
printf("net_recv: received message type %d instead of %d", m.hdr.type, type);
return false;
}
m.payload = malloc(m.hdr.payload_length); // Allocate space for message payload
recv(sock, &m.hdr, sizeof(msg_header_t), 0); // Remove message header from socket
recv(sock, m.payload, m.hdr.payload_length, 0);// And then receive the payload
switch(type)
{
case msg_type_hello:
result = server_recv_hello(m.payload, m.hdr.payload_length);
break;
case msg_type_start_game:
result = client_recv_player_list(m.payload, m.hdr.payload_length);
break;
case msg_type_deal_cards:
result = client_recv_deal_cards(m.payload, m.hdr.payload_length);
break;
case msg_type_init_stacks:
printf("not yet implemented: msg_type_init_stacks\n");
exit(EXIT_FAILURE);
break;
case msg_type_selected_card:
result = server_recv_selected_card(m.payload, m.hdr.payload_length);
break;
case msg_type_selected_stack_c:
result = server_recv_selected_stack(m.payload, m.hdr.payload_length);
break;
case msg_type_selected_stack_s:
result = client_recv_selected_stack(m.payload, m.hdr.payload_length);
break;
default:
printf("net_recv: Unknown message type %d received!\n", type);
exit(EXIT_FAILURE);
break;
}
free(m.payload);
return result;
}
bool net_send(int sock, const msg_type_t type, void* param)
{
bool result = true;
uint8_t payload_len = 255;
uint8_t buf[payload_len+2]; // should be enough for all packet types
buf[0] = type;
switch(type)
{
case msg_type_hello:
payload_len = client_send_hello(&buf[2], payload_len);
break;
case msg_type_selected_card:
payload_len = client_send_selected_card(&buf[2], payload_len);
break;
case msg_type_selected_stack_c:
payload_len = client_send_selected_stack(&buf[2], payload_len);
break;
case msg_type_start_game:
payload_len = server_send_start_game(&buf[2], payload_len);
break;
case msg_type_selected_stack_s:
payload_len = server_send_selected_stack(&buf[2], payload_len);
break;
case msg_type_deal_cards:
payload_len = server_send_deal_cards(&buf[2], payload_len, param);
break;
case msg_type_initial_stack:
payload_len = server_send_initial_stack(&buf[2], payload_len, param);
break;
default:
printf("net_send: Unknown message type %d received\n", type);
exit(EXIT_FAILURE);
break;
}
buf[1] = payload_len;
send(sock, buf, payload_len+2, 0);
return result;
}
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