*/
#include "includes.h"
-RCSID("$OpenBSD: ssh.c,v 1.231 2005/02/16 09:56:44 otto Exp $");
+RCSID("$OpenBSD: ssh.c,v 1.240 2005/05/27 08:30:37 djm Exp $");
#include <openssl/evp.h>
#include <openssl/err.h>
int control_fd = -1;
/* Multiplexing control command */
-static u_int mux_command = SSHMUX_COMMAND_OPEN;
+static u_int mux_command = 0;
/* Only used in control client mode */
volatile sig_atomic_t control_client_terminate = 0;
{
fprintf(stderr,
"usage: ssh [-1246AaCfgkMNnqsTtVvXxY] [-b bind_address] [-c cipher_spec]\n"
-" [-D port] [-e escape_char] [-F configfile] [-i identity_file]\n"
-" [-L port:host:hostport] [-l login_name] [-m mac_spec] [-O ctl_cmd]\n"
-" [-o option] [-p port] [-R port:host:hostport] [-S ctl_path]\n"
+" [-D port] [-e escape_char] [-F configfile]\n"
+" [-i identity_file] [-L [bind_address:]port:host:hostport]\n"
+" [-l login_name] [-m mac_spec] [-O ctl_cmd] [-o option] [-p port]\n"
+" [-R [bind_address:]port:host:hostport] [-S ctl_path]\n"
" [user@]hostname [command]\n"
);
exit(1);
main(int ac, char **av)
{
int i, opt, exit_status;
- u_short fwd_port, fwd_host_port;
- char sfwd_port[6], sfwd_host_port[6];
char *p, *cp, *line, buf[256];
struct stat st;
struct passwd *pw;
int dummy;
extern int optind, optreset;
extern char *optarg;
+ Forward fwd;
__progname = ssh_get_progname(av[0]);
init_rng();
break;
case 'L':
- case 'R':
- if (sscanf(optarg, "%5[0123456789]:%255[^:]:%5[0123456789]",
- sfwd_port, buf, sfwd_host_port) != 3 &&
- sscanf(optarg, "%5[0123456789]/%255[^/]/%5[0123456789]",
- sfwd_port, buf, sfwd_host_port) != 3) {
+ if (parse_forward(&fwd, optarg))
+ add_local_forward(&options, &fwd);
+ else {
fprintf(stderr,
- "Bad forwarding specification '%s'\n",
+ "Bad local forwarding specification '%s'\n",
optarg);
- usage();
- /* NOTREACHED */
+ exit(1);
}
- if ((fwd_port = a2port(sfwd_port)) == 0 ||
- (fwd_host_port = a2port(sfwd_host_port)) == 0) {
+ break;
+
+ case 'R':
+ if (parse_forward(&fwd, optarg)) {
+ add_remote_forward(&options, &fwd);
+ } else {
fprintf(stderr,
- "Bad forwarding port(s) '%s'\n", optarg);
+ "Bad remote forwarding specification "
+ "'%s'\n", optarg);
exit(1);
}
- if (opt == 'L')
- add_local_forward(&options, fwd_port, buf,
- fwd_host_port);
- else if (opt == 'R')
- add_remote_forward(&options, fwd_port, buf,
- fwd_host_port);
break;
case 'D':
- fwd_port = a2port(optarg);
- if (fwd_port == 0) {
+ cp = p = xstrdup(optarg);
+ memset(&fwd, '\0', sizeof(fwd));
+ fwd.connect_host = "socks";
+ if ((fwd.listen_host = hpdelim(&cp)) == NULL) {
+ fprintf(stderr, "Bad dynamic forwarding "
+ "specification '%.100s'\n", optarg);
+ exit(1);
+ }
+ if (cp != NULL) {
+ fwd.listen_port = a2port(cp);
+ fwd.listen_host = cleanhostname(fwd.listen_host);
+ } else {
+ fwd.listen_port = a2port(fwd.listen_host);
+ fwd.listen_host = "";
+ }
+
+ if (fwd.listen_port == 0) {
fprintf(stderr, "Bad dynamic port '%s'\n",
optarg);
exit(1);
}
- add_local_forward(&options, fwd_port, "socks", 0);
+ add_local_forward(&options, &fwd);
+ xfree(p);
break;
case 'C':
if (no_tty_flag)
tty_flag = 0;
/* Do not allocate a tty if stdin is not a tty. */
- if (!isatty(fileno(stdin)) && !force_tty_flag) {
+ if ((!isatty(fileno(stdin)) || stdin_null_flag) && !force_tty_flag) {
if (tty_flag)
logit("Pseudo-terminal will not be allocated because stdin is not a terminal.");
tty_flag = 0;
options.control_path = tilde_expand_filename(
options.control_path, original_real_uid);
}
- if (options.control_path != NULL && options.control_master == 0)
- control_client(options.control_path); /* This doesn't return */
+ if (mux_command != 0 && options.control_path == NULL)
+ fatal("No ControlPath specified for \"-O\" command");
+ if (options.control_path != NULL && options.control_master == 0) {
+ if (mux_command == 0)
+ mux_command = SSHMUX_COMMAND_OPEN;
+ control_client(options.control_path);
+ }
/* Open a connection to the remote host. */
if (ssh_connect(host, &hostaddr, options.port,
/* Initiate local TCP/IP port forwardings. */
for (i = 0; i < options.num_local_forwards; i++) {
- debug("Connections to local port %d forwarded to remote address %.200s:%d",
- options.local_forwards[i].port,
- options.local_forwards[i].host,
- options.local_forwards[i].host_port);
+ debug("Local connections to %.200s:%d forwarded to remote "
+ "address %.200s:%d",
+ (options.local_forwards[i].listen_host == NULL) ?
+ (options.gateway_ports ? "*" : "LOCALHOST") :
+ options.local_forwards[i].listen_host,
+ options.local_forwards[i].listen_port,
+ options.local_forwards[i].connect_host,
+ options.local_forwards[i].connect_port);
success += channel_setup_local_fwd_listener(
- options.local_forwards[i].port,
- options.local_forwards[i].host,
- options.local_forwards[i].host_port,
+ options.local_forwards[i].listen_host,
+ options.local_forwards[i].listen_port,
+ options.local_forwards[i].connect_host,
+ options.local_forwards[i].connect_port,
options.gateway_ports);
}
if (i > 0 && success == 0)
/* Initiate remote TCP/IP port forwardings. */
for (i = 0; i < options.num_remote_forwards; i++) {
- debug("Connections to remote port %d forwarded to local address %.200s:%d",
- options.remote_forwards[i].port,
- options.remote_forwards[i].host,
- options.remote_forwards[i].host_port);
+ debug("Remote connections from %.200s:%d forwarded to "
+ "local address %.200s:%d",
+ (options.remote_forwards[i].listen_host == NULL) ?
+ (options.gateway_ports ? "*" : "LOCALHOST") :
+ options.remote_forwards[i].listen_host,
+ options.remote_forwards[i].listen_port,
+ options.remote_forwards[i].connect_host,
+ options.remote_forwards[i].connect_port);
channel_request_remote_forwarding(
- options.remote_forwards[i].port,
- options.remote_forwards[i].host,
- options.remote_forwards[i].host_port);
+ options.remote_forwards[i].listen_host,
+ options.remote_forwards[i].listen_port,
+ options.remote_forwards[i].connect_host,
+ options.remote_forwards[i].connect_port);
}
}
return;
debug("remote forward %s for: listen %d, connect %s:%d",
type == SSH2_MSG_REQUEST_SUCCESS ? "success" : "failure",
- options.remote_forwards[i].port,
- options.remote_forwards[i].host,
- options.remote_forwards[i].host_port);
+ options.remote_forwards[i].listen_port,
+ options.remote_forwards[i].connect_host,
+ options.remote_forwards[i].connect_port);
if (type == SSH2_MSG_REQUEST_FAILURE)
- logit("Warning: remote port forwarding failed for listen port %d",
- options.remote_forwards[i].port);
+ logit("Warning: remote port forwarding failed for listen "
+ "port %d", options.remote_forwards[i].listen_port);
}
static void
old_umask = umask(0177);
if (bind(control_fd, (struct sockaddr*)&addr, addr_len) == -1) {
control_fd = -1;
- if (errno == EINVAL)
+ if (errno == EINVAL || errno == EADDRINUSE)
fatal("ControlSocket %s already exists",
options.control_path);
else
extern char **environ;
u_int flags;
- if (stdin_null_flag) {
- if ((fd = open(_PATH_DEVNULL, O_RDONLY)) == -1)
- fatal("open(/dev/null): %s", strerror(errno));
- if (dup2(fd, STDIN_FILENO) == -1)
- fatal("dup2: %s", strerror(errno));
- if (fd > STDERR_FILENO)
- close(fd);
- }
-
memset(&addr, '\0', sizeof(addr));
addr.sun_family = AF_UNIX;
addr_len = offsetof(struct sockaddr_un, sun_path) +
if ((sock = socket(PF_UNIX, SOCK_STREAM, 0)) < 0)
fatal("%s socket(): %s", __func__, strerror(errno));
- if (connect(sock, (struct sockaddr*)&addr, addr_len) == -1)
- fatal("Couldn't connect to %s: %s", path, strerror(errno));
+ if (connect(sock, (struct sockaddr*)&addr, addr_len) == -1) {
+ if (mux_command != SSHMUX_COMMAND_OPEN) {
+ fatal("Control socket connect(%.100s): %s", path,
+ strerror(errno));
+ }
+ if (errno == ENOENT)
+ debug("Control socket \"%.100s\" does not exist", path);
+ else {
+ error("Control socket connect(%.100s): %s", path,
+ strerror(errno));
+ }
+ close(sock);
+ return;
+ }
+
+ if (stdin_null_flag) {
+ if ((fd = open(_PATH_DEVNULL, O_RDONLY)) == -1)
+ fatal("open(/dev/null): %s", strerror(errno));
+ if (dup2(fd, STDIN_FILENO) == -1)
+ fatal("dup2: %s", strerror(errno));
+ if (fd > STDERR_FILENO)
+ close(fd);
+ }
if ((term = getenv("TERM")) == NULL)
term = "";
switch (mux_command) {
case SSHMUX_COMMAND_ALIVE_CHECK:
- fprintf(stderr, "Master running (pid=%d)\r\n",
+ fprintf(stderr, "Master running (pid=%d)\r\n",
control_server_pid);
exit(0);
case SSHMUX_COMMAND_TERMINATE:
andersk / openssh.git / blobdiff