frodo-wii/Src/NetworkWii.h
2009-02-07 11:28:29 +00:00

199 lines
3.8 KiB
C

#include <stdio.h>
#include <stdlib.h>
#include <network.h>
static int set_sock_opts(int sock)
{
struct timeval tv;
int d = 1;
memset(&tv, 0, sizeof(tv));
tv.tv_sec = 2;
net_setsockopt(sock, SOL_SOCKET, SO_RCVTIMEO,
&tv, sizeof(struct timeval));
net_setsockopt(sock, SOL_SOCKET, SO_SNDTIMEO,
&tv, sizeof(struct timeval));
net_setsockopt(sock,SOL_SOCKET,SO_REUSEADDR, &d, sizeof(int));
return 0;
}
/* From glibc docs */
static int make_socket (uint16_t port)
{
struct sockaddr_in name;
int sock;
/* Create the socket. */
sock = net_socket (PF_INET, SOCK_STREAM, 0);
if (sock < 0)
{
perror ("socket");
exit (EXIT_FAILURE);
}
set_sock_opts(sock);
/* Give the socket a name. */
name.sin_family = AF_INET;
name.sin_port = htons (port);
name.sin_addr.s_addr = htonl (INADDR_ANY);
if (net_bind (sock, (struct sockaddr *) &name, sizeof (name)) < 0)
{
perror ("bind");
exit (1);
}
return sock;
}
bool init_sockaddr (struct sockaddr_in *name,
const char *hostname, uint16_t port)
{
struct hostent *hostinfo;
name->sin_family = AF_INET;
name->sin_port = htons (port);
hostinfo = net_gethostbyname ((char*)hostname);
if (hostinfo == NULL)
{
fprintf (stderr, "Unknown host %s.\n", hostname);
return false;
}
//name->sin_addr = *(struct in_addr *) hostinfo->h_addr;
return true;
}
bool Network::StartListener(int port)
{
Network::listen_sock = make_socket(port);
if (Network::listen_sock < 0)
return false;
if (net_listen(Network::listen_sock, MAX_NETWORK_PEERS) < 0)
{
perror("listen");
return false;
}
return true;
}
bool Network::CheckNewConnection()
{
struct timeval tv;
struct sockaddr_in peer_name;
size_t size;
int peer_sock;
fd_set listen_fds;
Network *peer;
/* Not initialized yet */
if (Network::listen_sock <= 0)
return false;
/* No more than that thanks... */
if (Network::n_peers >= MAX_NETWORK_PEERS)
return false;
FD_ZERO(&listen_fds);
FD_SET(Network::listen_sock, &listen_fds);
/* If something connects, create a new client */
memset(&tv, 0, sizeof(tv));
int v = net_select(Network::listen_sock + 1, &listen_fds, NULL, NULL, &tv);
if ( v < 0)
{
perror("select");
exit(1);
}
else if ( v == 0 )
return false;
size = sizeof(peer_name);
peer_sock = net_accept(Network::listen_sock, (struct sockaddr*)&peer_name, &size);
if (peer_sock < 0)
{
fprintf(stderr, "Accepting peer failed\n");
return false;
}
/* And add the new one! */
Network::AddPeer(new Network(peer_sock, true));
return true;
}
bool Network::ConnectTo(const char *hostname, int port)
{
/* Again from glibc docs */
struct sockaddr_in servername;
int sock;
/* Create the socket. */
sock = net_socket (PF_INET, SOCK_STREAM, 0);
if (sock < 0)
{
perror ("socket (client)");
return false;
}
set_sock_opts(sock);
/* Connect to the server. */
init_sockaddr (&servername, hostname, port);
if (net_connect(sock, (struct sockaddr *) &servername,
sizeof (servername)) != 0)
{
perror ("connect (client)");
return false;
}
Network::AddPeer( new Network(sock, false) );
return true;
}
ssize_t Network::ReceiveFrom(void *dst, int sock, size_t sz,
struct sockaddr_in *from)
{
socklen_t from_sz = from ? sizeof(struct sockaddr_in) : 0;
return net_recvfrom(sock, dst, sz, 0, (struct sockaddr*)from, &from_sz);
}
ssize_t Network::SendTo(void *src, int sock, size_t sz, struct sockaddr_in *to)
{
socklen_t to_sz = sizeof(struct sockaddr_in);
assert(to);
return net_sendto(sock, src, sz, 0, (struct sockaddr*)to, to_sz);
}
bool Network::Select(int sock, struct timeval *tv)
{
fd_set fds;
int v;
FD_ZERO(&fds);
FD_SET(sock, &fds);
v = net_select(sock + 1, &fds, NULL, NULL, tv);
if (v < 0)
{
fprintf(stderr, "Select failed\n");
return false;
}
/* v is 0 if the sock is not ready */
return v > 0;
}
void Network::CloseSocket()
{
net_close(this->sock);
}