/*
* init_server()
* Starts up listening socket
*/
int init_server()
{
int on = 1;
// Communications sockets
if (ENABLE_VB) {
// tcp:
gs_coms_skt = tcpsock();
if (setsockopt(gs_coms_skt, SOL_SOCKET,SO_REUSEADDR, (char*)&on, sizeof(on)) < 0) {
printf("Error Reusing Socket\n");
}
sockbind(gs_coms_skt, gs_port_coms);
socklisten(gs_coms_skt);
printf("TCP Listening on port %d\n.",gs_port_coms);
sock_set_nonblocking(gs_coms_skt); // was blocking
}
// udp:
if (firsttime) {
gs_udpcoms_skt = udpsock();
sock_set_nonblocking(gs_udpcoms_skt);
sockbind(gs_udpcoms_skt, UDP_PORT);
printf("UDP Listening on port %d\n.", UDP_PORT);
}
}
int tls_start(tls_t *tls)
{
sock_set_blocking(tls->sock);
tls->lasterror = gnutls_handshake(tls->session);
sock_set_nonblocking(tls->sock);
return tls->lasterror == GNUTLS_E_SUCCESS;
}
sock_t sock_connect(const char * const host, const unsigned int port)
{
sock_t sock;
char service[6];
struct addrinfo *res, *ainfo, hints;
int err;
sock = -1;
snprintf(service, 6, "%u", port);
memset(&hints, 0, sizeof(struct addrinfo));
hints.ai_family = AF_INET;
hints.ai_protocol = IPPROTO_TCP;
hints.ai_socktype = SOCK_STREAM;
if ((err = getaddrinfo(host, service, &hints, &res)) != 0)
return -1;
ainfo = res;
while (ainfo) {
if ((sock = socket(ainfo->ai_family, ainfo->ai_socktype,
ainfo->ai_protocol)) >= 0) {
sock_set_nonblocking(sock);
err = connect(sock, ainfo->ai_addr, ainfo->ai_addrlen);
if ((err == 0) || (err < 0 && _in_progress(sock_error())))
break;
}
ainfo = ainfo->ai_next;
}
if (res) freeaddrinfo(res);
return sock;
}
int run_client()
{
int i = 0;
int j = 0;
//long boolean = -1; // run while loop while this is true
//int valid = 0; // indicates whether the last packet recv'd is valid
static struct sockaddr_in cliaddr;
unsigned int len = sizeof(cliaddr);
int mem_counter = 0;
/*unsigned long valid_ot = 0;
unsigned long valid_ip0 = 0;
unsigned long valid_ip1 = 0;
unsigned long valid_ip2 = 0;
unsigned long valid_ot_prev = 0;
unsigned long valid_ip0_prev = 0;
unsigned long valid_ip1_prev = 0;
unsigned long valid_ip2_prev = 0;
unsigned char printstat = 0;
unsigned char printstat_prev = 0;*/
sigset_t sigio_set;
struct sigaction saio; // definition of signal action
static struct sockaddr_in addr;
// Accept new connection
/* if (tcpip_connected == 0) {
accepted_skt = connaccept(gs_coms_skt, &addr);
if (accepted_skt > 0) {
// We don't wanna block either source
sock_set_nonblocking(accepted_skt);
int flags = fcntl(accepted_skt, F_GETFL,0);
fcntl (accepted_skt,F_SETFL,flags|FASYNC);
fcntl(accepted_skt, F_SETOWN, getpid());
sigemptyset(&sigio_set);
sigaddset(&sigio_set,SIGIO);
saio.sa_handler = sd_signal_handler_IO;
saio.sa_flags = SA_SIGINFO;
sigemptyset(&saio.sa_mask);
saio.sa_mask = sigio_set;
if (sigaction(SIGIO,&saio,NULL)) {
printf("Error in sigaction()\n");
return 1;
}
if (accepted_skt>0) {
printf("Connection accepted from %d.%d.%d.%d\n",
(addr.sin_addr.s_addr&0x000000ff),
(addr.sin_addr.s_addr&0x0000ff00)>>8,
(addr.sin_addr.s_addr&0x00ff0000)>>16,
(addr.sin_addr.s_addr&0xff000000)>>24);
}
printf(".\n");
tcpip_connected = 1;
}
}*/
while (!gs_quit) {
sched_yield();
// Accept new connection
if ((tcpip_connected == 0) && (ENABLE_VB)) {
accepted_skt = connaccept(gs_coms_skt, &addr);
if (accepted_skt > 0) {
// We don't wanna block either source
sock_set_nonblocking(accepted_skt);
int flags = fcntl(accepted_skt, F_GETFL,0);
fcntl (accepted_skt,F_SETFL,flags|FASYNC);
fcntl(accepted_skt, F_SETOWN, getpid());
sigemptyset(&sigio_set);
sigaddset(&sigio_set,SIGIO);
saio.sa_handler = sd_signal_handler_IO;
saio.sa_flags = SA_SIGINFO;
sigemptyset(&saio.sa_mask);
saio.sa_mask = sigio_set;
if (sigaction(SIGIO,&saio,NULL)) {
printf("Error in sigaction()\n");
return 1;
}
if (accepted_skt>0) {
printf("Connection accepted from %d.%d.%d.%d\n",
(addr.sin_addr.s_addr&0x000000ff),
(addr.sin_addr.s_addr&0x0000ff00)>>8,
(addr.sin_addr.s_addr&0x00ff0000)>>16,
(addr.sin_addr.s_addr&0xff000000)>>24);
}
printf(".\n");
tcpip_connected = 1;
}
