+/* $OpenBSD: ssh.c,v 1.293 2006/08/03 03:34:42 deraadt Exp $ */
/*
* Author: Tatu Ylonen <ylo@cs.hut.fi>
* Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
*/
#include "includes.h"
-RCSID("$OpenBSD: ssh.c,v 1.257 2005/12/20 04:41:07 dtucker Exp $");
+
+#include <sys/types.h>
+#ifdef HAVE_SYS_STAT_H
+# include <sys/stat.h>
+#endif
+#include <sys/resource.h>
+#include <sys/ioctl.h>
+#include <sys/socket.h>
+#include <sys/un.h>
+
+#include <ctype.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <netdb.h>
+#ifdef HAVE_PATHS_H
+#include <paths.h>
+#endif
+#include <pwd.h>
+#include <signal.h>
+#include <stdarg.h>
+#include <stddef.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#include <netinet/in.h>
+#include <arpa/inet.h>
#include <openssl/evp.h>
#include <openssl/err.h>
+#include "xmalloc.h"
#include "ssh.h"
#include "ssh1.h"
#include "ssh2.h"
#include "compat.h"
#include "cipher.h"
-#include "xmalloc.h"
#include "packet.h"
#include "buffer.h"
-#include "bufaux.h"
#include "channels.h"
#include "key.h"
#include "authfd.h"
#include "msg.h"
#include "monitor_fdpass.h"
#include "uidswap.h"
+#include "version.h"
#ifdef SMARTCARD
#include "scard.h"
" [-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"
-" [-w tunnel:tunnel] [user@]hostname [command]\n"
+" [-w local_tun[:remote_tun]] [user@]hostname [command]\n"
);
exit(255);
}
/* Parse command-line arguments. */
host = NULL;
-again:
+ again:
while ((opt = getopt(ac, av,
"1246ab:c:e:fgi:kl:m:no:p:qstvxACD:F:I:L:MNO:PR:S:TVw:XY")) != -1) {
switch (opt) {
if (options.host_key_alias != NULL) {
for (p = options.host_key_alias; *p; p++)
if (isupper(*p))
- *p = tolower(*p);
+ *p = (char)tolower(*p);
}
/* Get default port if port has not been set. */
options.control_path = NULL;
if (options.control_path != NULL) {
+ char thishost[NI_MAXHOST];
+
+ if (gethostname(thishost, sizeof(thishost)) == -1)
+ fatal("gethostname: %s", strerror(errno));
snprintf(buf, sizeof(buf), "%d", options.port);
cp = tilde_expand_filename(options.control_path,
original_real_uid);
options.control_path = percent_expand(cp, "p", buf, "h", host,
- "r", options.user, (char *)NULL);
+ "r", options.user, "l", thishost, (char *)NULL);
xfree(cp);
}
if (mux_command != 0 && options.control_path == NULL)
if (options.rhosts_rsa_authentication ||
options.hostbased_authentication) {
sensitive_data.nkeys = 3;
- sensitive_data.keys = xmalloc(sensitive_data.nkeys *
+ sensitive_data.keys = xcalloc(sensitive_data.nkeys,
sizeof(Key));
PRIV_START;
sensitive_data.keys[0] = key_load_private_type(KEY_RSA1,
- _PATH_HOST_KEY_FILE, "", NULL);
+ _PATH_HOST_KEY_FILE, "", NULL, NULL);
sensitive_data.keys[1] = key_load_private_type(KEY_DSA,
- _PATH_HOST_DSA_KEY_FILE, "", NULL);
+ _PATH_HOST_DSA_KEY_FILE, "", NULL, NULL);
sensitive_data.keys[2] = key_load_private_type(KEY_RSA,
- _PATH_HOST_RSA_KEY_FILE, "", NULL);
+ _PATH_HOST_RSA_KEY_FILE, "", NULL, NULL);
PRIV_END;
if (options.hostbased_authentication == 1 &&
options.gateway_ports, options.hpn_disabled,
options.hpn_buffer_size);
}
+ if (i > 0 && success != i && options.exit_on_forward_failure)
+ fatal("Could not request local forwarding.");
if (i > 0 && success == 0)
error("Could not request local forwarding.");
options.remote_forwards[i].listen_port,
options.remote_forwards[i].connect_host,
options.remote_forwards[i].connect_port);
- channel_request_remote_forwarding(
+ if (channel_request_remote_forwarding(
options.remote_forwards[i].listen_host,
options.remote_forwards[i].listen_port,
options.remote_forwards[i].connect_host,
- options.remote_forwards[i].connect_port);
+ options.remote_forwards[i].connect_port) < 0) {
+ if (options.exit_on_forward_failure)
+ fatal("Could not request remote forwarding.");
+ else
+ logit("Warning: Could not request remote "
+ "forwarding.");
+ }
}
}
/* Store window size in the packet. */
if (ioctl(fileno(stdin), TIOCGWINSZ, &ws) < 0)
memset(&ws, 0, sizeof(ws));
- packet_put_int(ws.ws_row);
- packet_put_int(ws.ws_col);
- packet_put_int(ws.ws_xpixel);
- packet_put_int(ws.ws_ypixel);
+ packet_put_int((u_int)ws.ws_row);
+ packet_put_int((u_int)ws.ws_col);
+ packet_put_int((u_int)ws.ws_xpixel);
+ packet_put_int((u_int)ws.ws_ypixel);
/* Store tty modes in the packet. */
tty_make_modes(fileno(stdin), NULL);
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].listen_port);
+ if (type == SSH2_MSG_REQUEST_FAILURE) {
+ if (options.exit_on_forward_failure)
+ fatal("Error: remote port forwarding failed for "
+ "listen port %d",
+ options.remote_forwards[i].listen_port);
+ else
+ logit("Warning: remote port forwarding failed for "
+ "listen port %d",
+ options.remote_forwards[i].listen_port);
+ }
}
static void
fatal("%s socket(): %s", __func__, strerror(errno));
old_umask = umask(0177);
- if (bind(control_fd, (struct sockaddr*)&addr, addr_len) == -1) {
+ if (bind(control_fd, (struct sockaddr *)&addr, addr_len) == -1) {
control_fd = -1;
if (errno == EINVAL || errno == EADDRINUSE)
fatal("ControlSocket %s already exists",
static void
load_public_identity_files(void)
{
- char *filename;
+ char *filename, *cp, thishost[NI_MAXHOST];
int i = 0;
Key *public;
+ struct passwd *pw;
#ifdef SMARTCARD
Key **keys;
if (options.smartcard_device != NULL &&
options.num_identity_files < SSH_MAX_IDENTITY_FILES &&
- (keys = sc_get_keys(options.smartcard_device, NULL)) != NULL ) {
+ (keys = sc_get_keys(options.smartcard_device, NULL)) != NULL) {
int count = 0;
for (i = 0; keys[i] != NULL; i++) {
count++;
xfree(keys);
}
#endif /* SMARTCARD */
+ if ((pw = getpwuid(original_real_uid)) == NULL)
+ fatal("load_public_identity_files: getpwuid failed");
+ if (gethostname(thishost, sizeof(thishost)) == -1)
+ fatal("load_public_identity_files: gethostname: %s",
+ strerror(errno));
for (; i < options.num_identity_files; i++) {
- filename = tilde_expand_filename(options.identity_files[i],
+ cp = tilde_expand_filename(options.identity_files[i],
original_real_uid);
+ filename = percent_expand(cp, "d", pw->pw_dir,
+ "u", pw->pw_name, "l", thishost, "h", host,
+ "r", options.user, (char *)NULL);
+ xfree(cp);
public = key_load_public(filename, NULL);
debug("identity file %s type %d", filename,
public ? public->type : -1);
static int
env_permitted(char *env)
{
- int i;
+ int i, ret;
char name[1024], *cp;
- strlcpy(name, env, sizeof(name));
- if ((cp = strchr(name, '=')) == NULL)
+ if ((cp = strchr(env, '=')) == NULL || cp == env)
return (0);
-
- *cp = '\0';
+ ret = snprintf(name, sizeof(name), "%.*s", (int)(cp - env), env);
+ if (ret <= 0 || (size_t)ret >= sizeof(name))
+ fatal("env_permitted: name '%.100s...' too long", env);
for (i = 0; i < options.num_send_env; i++)
if (match_pattern(name, options.send_env[i]))
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) {
+ 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);
+ debug("Control socket \"%.100s\" does not exist", path);
else {
- error("Control socket connect(%.100s): %s", path,
+ 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);
- }
+ 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);
+ }
term = getenv("TERM");
andersk / gssapi-openssh.git / blobdiff