#include "defs.h"
#include "serial.h"
#include "ser-unix.h"
#include <sys/types.h>
#ifdef HAVE_SYS_FILIO_H
#include <sys/filio.h>
#endif
#ifdef HAVE_SYS_IOCTL_H
#include <sys/ioctl.h>
#endif
#include <sys/time.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <netdb.h>
#include <sys/socket.h>
#include <netinet/tcp.h>
#include <signal.h>
#include "gdb_string.h"
static int net_open (struct serial *scb, const char *name);
static void net_close (struct serial *scb);
extern int (*ui_loop_hook) (int);
void _initialize_ser_tcp (void);
#define TIMEOUT 15
#define POLL_INTERVAL 2
static int
net_open (struct serial *scb, const char *name)
{
char *port_str, hostname[100];
int n, port, tmp;
int use_udp;
struct hostent *hostent;
struct sockaddr_in sockaddr;
use_udp = 0;
if (strncmp (name, "udp:", 4) == 0)
{
use_udp = 1;
name = name + 4;
}
else if (strncmp (name, "tcp:", 4) == 0)
name = name + 4;
port_str = strchr (name, ':');
if (!port_str)
error ("net_open: No colon in host name!");
tmp = min (port_str - name, (int) sizeof hostname - 1);
strncpy (hostname, name, tmp);
hostname[tmp] = '\000';
port = atoi (port_str + 1);
if (!hostname[0])
strcpy (hostname, "localhost");
hostent = gethostbyname (hostname);
if (!hostent)
{
fprintf_unfiltered (gdb_stderr, "%s: unknown host\n", hostname);
errno = ENOENT;
return -1;
}
if (use_udp)
scb->fd = socket (PF_INET, SOCK_DGRAM, 0);
else
scb->fd = socket (PF_INET, SOCK_STREAM, 0);
if (scb->fd < 0)
return -1;
sockaddr.sin_family = PF_INET;
sockaddr.sin_port = htons (port);
memcpy (&sockaddr.sin_addr.s_addr, hostent->h_addr,
sizeof (struct in_addr));
tmp = 1;
ioctl (scb->fd, FIONBIO, &tmp);
n = connect (scb->fd, (struct sockaddr *) &sockaddr, sizeof (sockaddr));
if (n < 0 && errno != EINPROGRESS)
{
net_close (scb);
return -1;
}
if (n)
{
struct timeval t;
fd_set rset, wset;
int polls = 0;
FD_ZERO (&rset);
do
{
if (ui_loop_hook)
{
if (ui_loop_hook (0))
{
errno = EINTR;
net_close (scb);
return -1;
}
}
FD_SET (scb->fd, &rset);
wset = rset;
t.tv_sec = 0;
t.tv_usec = 1000000 / POLL_INTERVAL;
n = select (scb->fd + 1, &rset, &wset, NULL, &t);
polls++;
}
while (n == 0 && polls <= TIMEOUT * POLL_INTERVAL);
if (n < 0 || polls > TIMEOUT * POLL_INTERVAL)
{
if (polls > TIMEOUT * POLL_INTERVAL)
errno = ETIMEDOUT;
net_close (scb);
return -1;
}
}
{
int res, err, len;
len = sizeof(err);
res = getsockopt (scb->fd, SOL_SOCKET, SO_ERROR, &err, &len);
if (res < 0 || err)
{
if (err)
errno = err;
net_close (scb);
return -1;
}
}
tmp = 0;
ioctl (scb->fd, FIONBIO, &tmp);
if (use_udp == 0)
{
tmp = 1;
setsockopt (scb->fd, IPPROTO_TCP, TCP_NODELAY,
(char *)&tmp, sizeof (tmp));
}
signal (SIGPIPE, SIG_IGN);
return 0;
}
static void
net_close (struct serial *scb)
{
if (scb->fd < 0)
return;
close (scb->fd);
scb->fd = -1;
}
void
_initialize_ser_tcp (void)
{
struct serial_ops *ops = XMALLOC (struct serial_ops);
memset (ops, sizeof (struct serial_ops), 0);
ops->name = "tcp";
ops->next = 0;
ops->sopen = net_open;
ops->sclose = net_close;
ops->readchar = ser_unix_readchar;
ops->swrite = ser_unix_write;
ops->flush_output = ser_unix_nop_flush_output;
ops->flush_input = ser_unix_flush_input;
ops->send_break = ser_unix_nop_send_break;
ops->go_raw = ser_unix_nop_raw;
ops->get_tty_state = ser_unix_nop_get_tty_state;
ops->set_tty_state = ser_unix_nop_set_tty_state;
ops->print_tty_state = ser_unix_nop_print_tty_state;
ops->noflush_set_tty_state = ser_unix_nop_noflush_set_tty_state;
ops->setbaudrate = ser_unix_nop_setbaudrate;
ops->setstopbits = ser_unix_nop_setstopbits;
ops->drain_output = ser_unix_nop_drain_output;
ops->async = ser_unix_async;
serial_add_interface (ops);
}