/* Serial interface for raw TCP connections on Un*x like systems
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/* Serial interface for raw TCP connections on Un*x like systems
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Copyright 1992, 1993, 1998-1999 Free Software Foundation, Inc.
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Copyright 1992, 1993, 1998-1999 Free Software Foundation, Inc.
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This file is part of GDB.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330,
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Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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Boston, MA 02111-1307, USA. */
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#include "defs.h"
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#include "defs.h"
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#include "serial.h"
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#include "serial.h"
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#include "ser-unix.h"
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#include "ser-unix.h"
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#include <sys/types.h>
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#include <sys/types.h>
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#include <sys/time.h>
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#include <sys/time.h>
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#include <netinet/in.h>
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#include <netinet/in.h>
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#include <arpa/inet.h>
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#include <arpa/inet.h>
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#include <netdb.h>
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#include <netdb.h>
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#include <sys/socket.h>
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#include <sys/socket.h>
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#ifndef __CYGWIN32__
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#ifndef __CYGWIN32__
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#include <netinet/tcp.h>
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#include <netinet/tcp.h>
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#endif
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#endif
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#include "signals.h"
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#include "signals.h"
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#include "gdb_string.h"
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#include "gdb_string.h"
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static int tcp_open (serial_t scb, const char *name);
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static int tcp_open (serial_t scb, const char *name);
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static void tcp_close (serial_t scb);
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static void tcp_close (serial_t scb);
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void _initialize_ser_tcp (void);
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void _initialize_ser_tcp (void);
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/* Open up a raw tcp socket */
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/* Open up a raw tcp socket */
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static int
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static int
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tcp_open (serial_t scb, const char *name)
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tcp_open (serial_t scb, const char *name)
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{
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{
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char *port_str;
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char *port_str;
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int port;
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int port;
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struct hostent *hostent;
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struct hostent *hostent;
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struct sockaddr_in sockaddr;
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struct sockaddr_in sockaddr;
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int tmp;
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int tmp;
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char hostname[100];
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char hostname[100];
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struct protoent *protoent;
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struct protoent *protoent;
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int i;
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int i;
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port_str = strchr (name, ':');
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port_str = strchr (name, ':');
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if (!port_str)
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if (!port_str)
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error ("tcp_open: No colon in host name!"); /* Shouldn't ever happen */
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error ("tcp_open: No colon in host name!"); /* Shouldn't ever happen */
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tmp = min (port_str - name, (int) sizeof hostname - 1);
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tmp = min (port_str - name, (int) sizeof hostname - 1);
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strncpy (hostname, name, tmp); /* Don't want colon */
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strncpy (hostname, name, tmp); /* Don't want colon */
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hostname[tmp] = '\000'; /* Tie off host name */
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hostname[tmp] = '\000'; /* Tie off host name */
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port = atoi (port_str + 1);
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port = atoi (port_str + 1);
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hostent = gethostbyname (hostname);
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hostent = gethostbyname (hostname);
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if (!hostent)
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if (!hostent)
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{
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{
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fprintf_unfiltered (gdb_stderr, "%s: unknown host\n", hostname);
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fprintf_unfiltered (gdb_stderr, "%s: unknown host\n", hostname);
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errno = ENOENT;
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errno = ENOENT;
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return -1;
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return -1;
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}
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}
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for (i = 1; i <= 15; i++)
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for (i = 1; i <= 15; i++)
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{
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{
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scb->fd = socket (PF_INET, SOCK_STREAM, 0);
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scb->fd = socket (PF_INET, SOCK_STREAM, 0);
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if (scb->fd < 0)
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if (scb->fd < 0)
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return -1;
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return -1;
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/* Allow rapid reuse of this port. */
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/* Allow rapid reuse of this port. */
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tmp = 1;
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tmp = 1;
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setsockopt (scb->fd, SOL_SOCKET, SO_REUSEADDR, (char *) &tmp, sizeof (tmp));
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setsockopt (scb->fd, SOL_SOCKET, SO_REUSEADDR, (char *) &tmp, sizeof (tmp));
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/* Enable TCP keep alive process. */
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/* Enable TCP keep alive process. */
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tmp = 1;
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tmp = 1;
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setsockopt (scb->fd, SOL_SOCKET, SO_KEEPALIVE, (char *) &tmp, sizeof (tmp));
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setsockopt (scb->fd, SOL_SOCKET, SO_KEEPALIVE, (char *) &tmp, sizeof (tmp));
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sockaddr.sin_family = PF_INET;
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sockaddr.sin_family = PF_INET;
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sockaddr.sin_port = htons (port);
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sockaddr.sin_port = htons (port);
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memcpy (&sockaddr.sin_addr.s_addr, hostent->h_addr,
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memcpy (&sockaddr.sin_addr.s_addr, hostent->h_addr,
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sizeof (struct in_addr));
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sizeof (struct in_addr));
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if (!connect (scb->fd, (struct sockaddr *) &sockaddr, sizeof (sockaddr)))
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if (!connect (scb->fd, (struct sockaddr *) &sockaddr, sizeof (sockaddr)))
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break;
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break;
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close (scb->fd);
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close (scb->fd);
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scb->fd = -1;
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scb->fd = -1;
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/* We retry for ECONNREFUSED because that is often a temporary condition, which
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/* We retry for ECONNREFUSED because that is often a temporary condition, which
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happens when the server is being restarted. */
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happens when the server is being restarted. */
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if (errno != ECONNREFUSED)
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if (errno != ECONNREFUSED)
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return -1;
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return -1;
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sleep (1);
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sleep (1);
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}
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}
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protoent = getprotobyname ("tcp");
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protoent = getprotobyname ("tcp");
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if (!protoent)
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if (!protoent)
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return -1;
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return -1;
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tmp = 1;
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tmp = 1;
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if (setsockopt (scb->fd, protoent->p_proto, TCP_NODELAY,
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if (setsockopt (scb->fd, protoent->p_proto, TCP_NODELAY,
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(char *) &tmp, sizeof (tmp)))
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(char *) &tmp, sizeof (tmp)))
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return -1;
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return -1;
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signal (SIGPIPE, SIG_IGN); /* If we don't do this, then GDB simply exits
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signal (SIGPIPE, SIG_IGN); /* If we don't do this, then GDB simply exits
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when the remote side dies. */
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when the remote side dies. */
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return 0;
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return 0;
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}
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}
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static void
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static void
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tcp_close (serial_t scb)
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tcp_close (serial_t scb)
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{
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{
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if (scb->fd < 0)
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if (scb->fd < 0)
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return;
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return;
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close (scb->fd);
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close (scb->fd);
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scb->fd = -1;
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scb->fd = -1;
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}
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}
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void
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void
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_initialize_ser_tcp (void)
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_initialize_ser_tcp (void)
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{
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{
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struct serial_ops *ops = XMALLOC (struct serial_ops);
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struct serial_ops *ops = XMALLOC (struct serial_ops);
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memset (ops, sizeof (struct serial_ops), 0);
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memset (ops, sizeof (struct serial_ops), 0);
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ops->name = "tcp";
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ops->name = "tcp";
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ops->next = 0;
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ops->next = 0;
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ops->open = tcp_open;
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ops->open = tcp_open;
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ops->close = tcp_close;
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ops->close = tcp_close;
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ops->readchar = ser_unix_readchar;
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ops->readchar = ser_unix_readchar;
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ops->write = ser_unix_write;
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ops->write = ser_unix_write;
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ops->flush_output = ser_unix_nop_flush_output;
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ops->flush_output = ser_unix_nop_flush_output;
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ops->flush_input = ser_unix_flush_input;
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ops->flush_input = ser_unix_flush_input;
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ops->send_break = ser_unix_nop_send_break;
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ops->send_break = ser_unix_nop_send_break;
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ops->go_raw = ser_unix_nop_raw;
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ops->go_raw = ser_unix_nop_raw;
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ops->get_tty_state = ser_unix_nop_get_tty_state;
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ops->get_tty_state = ser_unix_nop_get_tty_state;
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ops->set_tty_state = ser_unix_nop_set_tty_state;
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ops->set_tty_state = ser_unix_nop_set_tty_state;
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ops->print_tty_state = ser_unix_nop_print_tty_state;
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ops->print_tty_state = ser_unix_nop_print_tty_state;
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ops->noflush_set_tty_state = ser_unix_nop_noflush_set_tty_state;
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ops->noflush_set_tty_state = ser_unix_nop_noflush_set_tty_state;
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ops->setbaudrate = ser_unix_nop_setbaudrate;
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ops->setbaudrate = ser_unix_nop_setbaudrate;
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ops->setstopbits = ser_unix_nop_setstopbits;
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ops->setstopbits = ser_unix_nop_setstopbits;
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ops->drain_output = ser_unix_nop_drain_output;
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ops->drain_output = ser_unix_nop_drain_output;
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ops->async = ser_unix_async;
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ops->async = ser_unix_async;
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serial_add_interface (ops);
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serial_add_interface (ops);
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}
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}
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