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-rw-r--r--crypto/openssh/ssh.c89
1 files changed, 66 insertions, 23 deletions
diff --git a/crypto/openssh/ssh.c b/crypto/openssh/ssh.c
index c9e5aac..3940dab 100644
--- a/crypto/openssh/ssh.c
+++ b/crypto/openssh/ssh.c
@@ -40,7 +40,7 @@
*/
#include "includes.h"
-RCSID("$OpenBSD: ssh.c,v 1.249 2005/07/30 01:26:16 djm Exp $");
+RCSID("$OpenBSD: ssh.c,v 1.257 2005/12/20 04:41:07 dtucker Exp $");
#include <openssl/evp.h>
#include <openssl/err.h>
@@ -158,13 +158,13 @@ usage(void)
{
fprintf(stderr,
"usage: ssh [-1246AaCfgkMNnqsTtVvXxY] [-b bind_address] [-c cipher_spec]\n"
-" [-D port] [-e escape_char] [-F configfile]\n"
+" [-D [bind_address:]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"
+" [-w tunnel:tunnel] [user@]hostname [command]\n"
);
- exit(1);
+ exit(255);
}
static int ssh_session(void);
@@ -188,6 +188,9 @@ main(int ac, char **av)
struct servent *sp;
Forward fwd;
+ /* Ensure that fds 0, 1 and 2 are open or directed to /dev/null */
+ sanitise_stdfd();
+
__progname = ssh_get_progname(av[0]);
init_rng();
@@ -220,7 +223,7 @@ main(int ac, char **av)
pw = getpwuid(original_real_uid);
if (!pw) {
logit("You don't exist, go away!");
- exit(1);
+ exit(255);
}
/* Take a copy of the returned structure. */
pw = pwcopy(pw);
@@ -241,7 +244,7 @@ main(int ac, char **av)
again:
while ((opt = getopt(ac, av,
- "1246ab:c:e:fgi:kl:m:no:p:qstvxACD:F:I:L:MNO:PR:S:TVXY")) != -1) {
+ "1246ab:c:e:fgi:kl:m:no:p:qstvxACD:F:I:L:MNO:PR:S:TVw:XY")) != -1) {
switch (opt) {
case '1':
options.protocol = SSH_PROTO_1;
@@ -337,6 +340,15 @@ again:
if (opt == 'V')
exit(0);
break;
+ case 'w':
+ if (options.tun_open == -1)
+ options.tun_open = SSH_TUNMODE_DEFAULT;
+ options.tun_local = a2tun(optarg, &options.tun_remote);
+ if (options.tun_local == SSH_TUNID_ERR) {
+ fprintf(stderr, "Bad tun device '%s'\n", optarg);
+ exit(255);
+ }
+ break;
case 'q':
options.log_level = SYSLOG_LEVEL_QUIET;
break;
@@ -352,7 +364,7 @@ again:
else {
fprintf(stderr, "Bad escape character '%s'.\n",
optarg);
- exit(1);
+ exit(255);
}
break;
case 'c':
@@ -367,7 +379,7 @@ again:
fprintf(stderr,
"Unknown cipher type '%s'\n",
optarg);
- exit(1);
+ exit(255);
}
if (options.cipher == SSH_CIPHER_3DES)
options.ciphers = "3des-cbc";
@@ -383,7 +395,7 @@ again:
else {
fprintf(stderr, "Unknown mac type '%s'\n",
optarg);
- exit(1);
+ exit(255);
}
break;
case 'M':
@@ -396,7 +408,7 @@ again:
options.port = a2port(optarg);
if (options.port == 0) {
fprintf(stderr, "Bad port '%s'\n", optarg);
- exit(1);
+ exit(255);
}
break;
case 'l':
@@ -410,7 +422,7 @@ again:
fprintf(stderr,
"Bad local forwarding specification '%s'\n",
optarg);
- exit(1);
+ exit(255);
}
break;
@@ -421,7 +433,7 @@ again:
fprintf(stderr,
"Bad remote forwarding specification "
"'%s'\n", optarg);
- exit(1);
+ exit(255);
}
break;
@@ -432,7 +444,7 @@ again:
if ((fwd.listen_host = hpdelim(&cp)) == NULL) {
fprintf(stderr, "Bad dynamic forwarding "
"specification '%.100s'\n", optarg);
- exit(1);
+ exit(255);
}
if (cp != NULL) {
fwd.listen_port = a2port(cp);
@@ -445,7 +457,7 @@ again:
if (fwd.listen_port == 0) {
fprintf(stderr, "Bad dynamic port '%s'\n",
optarg);
- exit(1);
+ exit(255);
}
add_local_forward(&options, &fwd);
xfree(p);
@@ -466,7 +478,7 @@ again:
line = xstrdup(optarg);
if (process_config_line(&options, host ? host : "",
line, "command-line", 0, &dummy) != 0)
- exit(1);
+ exit(255);
xfree(line);
break;
case 's':
@@ -642,7 +654,7 @@ again:
original_effective_uid == 0 && options.use_privileged_port,
#endif
options.proxy_command) != 0)
- exit(1);
+ exit(255);
/*
* If we successfully made the connection, load the host private key
@@ -695,7 +707,7 @@ again:
/*
* Now that we are back to our own permissions, create ~/.ssh
- * directory if it doesn\'t already exist.
+ * directory if it doesn't already exist.
*/
snprintf(buf, sizeof buf, "%.100s%s%.100s", pw->pw_dir, strcmp(pw->pw_dir, "/") ? "/" : "", _PATH_SSH_USER_DIR);
if (stat(buf, &st) < 0)
@@ -791,8 +803,7 @@ ssh_init_forwarding(void)
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,
+ "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);
@@ -808,7 +819,7 @@ static void
check_agent_present(void)
{
if (options.forward_agent) {
- /* Clear agent forwarding if we don\'t have an agent. */
+ /* Clear agent forwarding if we don't have an agent. */
if (!ssh_agent_present())
options.forward_agent = 0;
}
@@ -1010,7 +1021,7 @@ ssh_control_listener(void)
fatal("ControlPath too long");
if ((control_fd = socket(PF_UNIX, SOCK_STREAM, 0)) < 0)
- fatal("%s socket(): %s\n", __func__, strerror(errno));
+ fatal("%s socket(): %s", __func__, strerror(errno));
old_umask = umask(0177);
if (bind(control_fd, (struct sockaddr*)&addr, addr_len) == -1) {
@@ -1019,12 +1030,12 @@ ssh_control_listener(void)
fatal("ControlSocket %s already exists",
options.control_path);
else
- fatal("%s bind(): %s\n", __func__, strerror(errno));
+ fatal("%s bind(): %s", __func__, strerror(errno));
}
umask(old_umask);
if (listen(control_fd, 64) == -1)
- fatal("%s listen(): %s\n", __func__, strerror(errno));
+ fatal("%s listen(): %s", __func__, strerror(errno));
set_nonblock(control_fd);
}
@@ -1057,6 +1068,33 @@ ssh_session2_setup(int id, void *arg)
packet_send();
}
+ if (options.tun_open != SSH_TUNMODE_NO) {
+ Channel *c;
+ int fd;
+
+ debug("Requesting tun.");
+ if ((fd = tun_open(options.tun_local,
+ options.tun_open)) >= 0) {
+ c = channel_new("tun", SSH_CHANNEL_OPENING, fd, fd, -1,
+ CHAN_TCP_WINDOW_DEFAULT, CHAN_TCP_PACKET_DEFAULT,
+ 0, "tun", 1);
+ c->datagram = 1;
+#if defined(SSH_TUN_FILTER)
+ if (options.tun_open == SSH_TUNMODE_POINTOPOINT)
+ channel_register_filter(c->self, sys_tun_infilter,
+ sys_tun_outfilter);
+#endif
+ packet_start(SSH2_MSG_CHANNEL_OPEN);
+ packet_put_cstring("tun@openssh.com");
+ packet_put_int(c->self);
+ packet_put_int(c->local_window_max);
+ packet_put_int(c->local_maxpacket);
+ packet_put_int(options.tun_open);
+ packet_put_int(options.tun_remote);
+ packet_send();
+ }
+ }
+
client_session2_setup(id, tty_flag, subsystem_flag, getenv("TERM"),
NULL, fileno(stdin), &command, environ, &ssh_subsystem_reply);
@@ -1121,6 +1159,11 @@ ssh_session2(void)
if (!no_shell_flag || (datafellows & SSH_BUG_DUMMYCHAN))
id = ssh_session2_open();
+ /* Execute a local command */
+ if (options.local_command != NULL &&
+ options.permit_local_command)
+ ssh_local_cmd(options.local_command);
+
/* If requested, let ssh continue in the background. */
if (fork_after_authentication_flag)
if (daemon(1, 1) < 0)
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