Darren Tucker | 9a2a609 | 2008-07-04 12:53:50 +1000 | [diff] [blame] | 1 | /* $OpenBSD: ssh.c,v 1.318 2008/07/02 13:47:39 djm Exp $ */ |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 2 | /* |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 3 | * Author: Tatu Ylonen <ylo@cs.hut.fi> |
| 4 | * Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland |
| 5 | * All rights reserved |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 6 | * Ssh client program. This program can be used to log into a remote machine. |
| 7 | * The software supports strong authentication, encryption, and forwarding |
| 8 | * of X11, TCP/IP, and authentication connections. |
| 9 | * |
Damien Miller | e4340be | 2000-09-16 13:29:08 +1100 | [diff] [blame] | 10 | * As far as I am concerned, the code I have written for this software |
| 11 | * can be used freely for any purpose. Any derived versions of this |
| 12 | * software must be clearly marked as such, and if the derived work is |
| 13 | * incompatible with the protocol description in the RFC file, it must be |
| 14 | * called by a name other than "ssh" or "Secure Shell". |
| 15 | * |
| 16 | * Copyright (c) 1999 Niels Provos. All rights reserved. |
Darren Tucker | 0a118da | 2003-10-15 15:54:32 +1000 | [diff] [blame] | 17 | * Copyright (c) 2000, 2001, 2002, 2003 Markus Friedl. All rights reserved. |
Damien Miller | e4340be | 2000-09-16 13:29:08 +1100 | [diff] [blame] | 18 | * |
| 19 | * Modified to work with SSL by Niels Provos <provos@citi.umich.edu> |
| 20 | * in Canada (German citizen). |
| 21 | * |
| 22 | * Redistribution and use in source and binary forms, with or without |
| 23 | * modification, are permitted provided that the following conditions |
| 24 | * are met: |
| 25 | * 1. Redistributions of source code must retain the above copyright |
| 26 | * notice, this list of conditions and the following disclaimer. |
| 27 | * 2. Redistributions in binary form must reproduce the above copyright |
| 28 | * notice, this list of conditions and the following disclaimer in the |
| 29 | * documentation and/or other materials provided with the distribution. |
| 30 | * |
| 31 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
| 32 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| 33 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
| 34 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
| 35 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| 36 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| 37 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| 38 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 39 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
| 40 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 41 | */ |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 42 | |
| 43 | #include "includes.h" |
Damien Miller | cd4223c | 2006-03-15 11:22:47 +1100 | [diff] [blame] | 44 | |
Damien Miller | f17883e | 2006-03-15 11:45:54 +1100 | [diff] [blame] | 45 | #include <sys/types.h> |
| 46 | #ifdef HAVE_SYS_STAT_H |
| 47 | # include <sys/stat.h> |
| 48 | #endif |
Damien Miller | cd4223c | 2006-03-15 11:22:47 +1100 | [diff] [blame] | 49 | #include <sys/resource.h> |
Damien Miller | 17e91c0 | 2006-03-15 11:28:34 +1100 | [diff] [blame] | 50 | #include <sys/ioctl.h> |
Damien Miller | e3b60b5 | 2006-07-10 21:08:03 +1000 | [diff] [blame] | 51 | #include <sys/socket.h> |
Damien Miller | 03e2003 | 2006-03-15 11:16:59 +1100 | [diff] [blame] | 52 | |
Damien Miller | c7b0636 | 2006-03-15 11:53:45 +1100 | [diff] [blame] | 53 | #include <ctype.h> |
Darren Tucker | ba72405 | 2006-07-12 22:24:22 +1000 | [diff] [blame] | 54 | #include <errno.h> |
Damien Miller | 57cf638 | 2006-07-10 21:13:46 +1000 | [diff] [blame] | 55 | #include <fcntl.h> |
Damien Miller | b8fe89c | 2006-07-24 14:51:00 +1000 | [diff] [blame] | 56 | #include <netdb.h> |
Damien Miller | 6645e7a | 2006-03-15 14:42:54 +1100 | [diff] [blame] | 57 | #ifdef HAVE_PATHS_H |
Damien Miller | 03e2003 | 2006-03-15 11:16:59 +1100 | [diff] [blame] | 58 | #include <paths.h> |
Damien Miller | 6645e7a | 2006-03-15 14:42:54 +1100 | [diff] [blame] | 59 | #endif |
Damien Miller | 9f2abc4 | 2006-07-10 20:53:08 +1000 | [diff] [blame] | 60 | #include <pwd.h> |
Damien Miller | 6ff3cad | 2006-03-15 11:52:09 +1100 | [diff] [blame] | 61 | #include <signal.h> |
Damien Miller | ded319c | 2006-09-01 15:38:36 +1000 | [diff] [blame] | 62 | #include <stdarg.h> |
Damien Miller | 2d00e63 | 2006-07-24 13:53:19 +1000 | [diff] [blame] | 63 | #include <stddef.h> |
Damien Miller | a7a73ee | 2006-08-05 11:37:59 +1000 | [diff] [blame] | 64 | #include <stdio.h> |
Damien Miller | e7a1e5c | 2006-08-05 11:34:19 +1000 | [diff] [blame] | 65 | #include <stdlib.h> |
Damien Miller | e3476ed | 2006-07-24 14:13:33 +1000 | [diff] [blame] | 66 | #include <string.h> |
Damien Miller | e6b3b61 | 2006-07-24 14:01:23 +1000 | [diff] [blame] | 67 | #include <unistd.h> |
Damien Miller | eba71ba | 2000-04-29 23:57:08 +1000 | [diff] [blame] | 68 | |
Darren Tucker | 46aa3e0 | 2006-09-02 15:32:40 +1000 | [diff] [blame] | 69 | #include <netinet/in.h> |
| 70 | #include <arpa/inet.h> |
| 71 | |
Damien Miller | eba71ba | 2000-04-29 23:57:08 +1000 | [diff] [blame] | 72 | #include <openssl/evp.h> |
Damien Miller | 0bc1bd8 | 2000-11-13 22:57:25 +1100 | [diff] [blame] | 73 | #include <openssl/err.h> |
Darren Tucker | bfaaf96 | 2008-02-28 19:13:52 +1100 | [diff] [blame] | 74 | #include "openbsd-compat/openssl-compat.h" |
Damien Miller | b84886b | 2008-05-19 15:05:07 +1000 | [diff] [blame] | 75 | #include "openbsd-compat/sys-queue.h" |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 76 | |
Damien Miller | d783435 | 2006-08-05 12:39:39 +1000 | [diff] [blame] | 77 | #include "xmalloc.h" |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 78 | #include "ssh.h" |
Ben Lindstrom | 226cfa0 | 2001-01-22 05:34:40 +0000 | [diff] [blame] | 79 | #include "ssh1.h" |
Damien Miller | 1383bd8 | 2000-04-06 12:32:37 +1000 | [diff] [blame] | 80 | #include "ssh2.h" |
| 81 | #include "compat.h" |
Ben Lindstrom | 226cfa0 | 2001-01-22 05:34:40 +0000 | [diff] [blame] | 82 | #include "cipher.h" |
Ben Lindstrom | 226cfa0 | 2001-01-22 05:34:40 +0000 | [diff] [blame] | 83 | #include "packet.h" |
| 84 | #include "buffer.h" |
Ben Lindstrom | c763767 | 2001-06-09 00:36:26 +0000 | [diff] [blame] | 85 | #include "channels.h" |
Damien Miller | eba71ba | 2000-04-29 23:57:08 +1000 | [diff] [blame] | 86 | #include "key.h" |
Damien Miller | 994cf14 | 2000-07-21 10:19:44 +1000 | [diff] [blame] | 87 | #include "authfd.h" |
Damien Miller | eba71ba | 2000-04-29 23:57:08 +1000 | [diff] [blame] | 88 | #include "authfile.h" |
Ben Lindstrom | 226cfa0 | 2001-01-22 05:34:40 +0000 | [diff] [blame] | 89 | #include "pathnames.h" |
Damien Miller | 0e220db | 2004-06-15 10:34:08 +1000 | [diff] [blame] | 90 | #include "dispatch.h" |
Ben Lindstrom | bf555ba | 2001-01-18 02:04:35 +0000 | [diff] [blame] | 91 | #include "clientloop.h" |
Ben Lindstrom | 226cfa0 | 2001-01-22 05:34:40 +0000 | [diff] [blame] | 92 | #include "log.h" |
| 93 | #include "readconf.h" |
| 94 | #include "sshconnect.h" |
Ben Lindstrom | 226cfa0 | 2001-01-22 05:34:40 +0000 | [diff] [blame] | 95 | #include "misc.h" |
Ben Lindstrom | 06b33aa | 2001-02-15 03:01:59 +0000 | [diff] [blame] | 96 | #include "kex.h" |
| 97 | #include "mac.h" |
Darren Tucker | 06f2bd8 | 2004-05-13 16:06:46 +1000 | [diff] [blame] | 98 | #include "sshpty.h" |
Darren Tucker | 46bc075 | 2004-05-02 22:11:30 +1000 | [diff] [blame] | 99 | #include "match.h" |
Damien Miller | 0e220db | 2004-06-15 10:34:08 +1000 | [diff] [blame] | 100 | #include "msg.h" |
Darren Tucker | 25f60a7 | 2004-08-15 17:23:34 +1000 | [diff] [blame] | 101 | #include "uidswap.h" |
Damien Miller | b757677 | 2006-07-10 20:23:39 +1000 | [diff] [blame] | 102 | #include "version.h" |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 103 | |
Ben Lindstrom | c5b6800 | 2001-07-04 04:52:03 +0000 | [diff] [blame] | 104 | #ifdef SMARTCARD |
Ben Lindstrom | c5b6800 | 2001-07-04 04:52:03 +0000 | [diff] [blame] | 105 | #include "scard.h" |
Ben Lindstrom | bcc1808 | 2001-08-06 21:59:25 +0000 | [diff] [blame] | 106 | #endif |
Ben Lindstrom | c5b6800 | 2001-07-04 04:52:03 +0000 | [diff] [blame] | 107 | |
Damien Miller | 3f90587 | 1999-11-15 17:10:57 +1100 | [diff] [blame] | 108 | extern char *__progname; |
Damien Miller | 3f90587 | 1999-11-15 17:10:57 +1100 | [diff] [blame] | 109 | |
Darren Tucker | d6173c0 | 2008-06-13 04:52:53 +1000 | [diff] [blame] | 110 | /* Flag indicating whether debug mode is on. May be set on the command line. */ |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 111 | int debug_flag = 0; |
| 112 | |
Damien Miller | 7892879 | 2000-04-12 20:17:38 +1000 | [diff] [blame] | 113 | /* Flag indicating whether a tty should be allocated */ |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 114 | int tty_flag = 0; |
Ben Lindstrom | 4dccfa5 | 2000-12-28 16:40:05 +0000 | [diff] [blame] | 115 | int no_tty_flag = 0; |
| 116 | int force_tty_flag = 0; |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 117 | |
Damien Miller | 1383bd8 | 2000-04-06 12:32:37 +1000 | [diff] [blame] | 118 | /* don't exec a shell */ |
| 119 | int no_shell_flag = 0; |
Damien Miller | 1383bd8 | 2000-04-06 12:32:37 +1000 | [diff] [blame] | 120 | |
Damien Miller | 5428f64 | 1999-11-25 11:54:57 +1100 | [diff] [blame] | 121 | /* |
| 122 | * Flag indicating that nothing should be read from stdin. This can be set |
| 123 | * on the command line. |
| 124 | */ |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 125 | int stdin_null_flag = 0; |
| 126 | |
Damien Miller | 5428f64 | 1999-11-25 11:54:57 +1100 | [diff] [blame] | 127 | /* |
| 128 | * Flag indicating that ssh should fork after authentication. This is useful |
Ben Lindstrom | f666fec | 2002-06-06 19:51:58 +0000 | [diff] [blame] | 129 | * so that the passphrase can be entered manually, and then ssh goes to the |
Damien Miller | 5428f64 | 1999-11-25 11:54:57 +1100 | [diff] [blame] | 130 | * background. |
| 131 | */ |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 132 | int fork_after_authentication_flag = 0; |
| 133 | |
Damien Miller | 5428f64 | 1999-11-25 11:54:57 +1100 | [diff] [blame] | 134 | /* |
| 135 | * General data structure for command line options and options configurable |
| 136 | * in configuration files. See readconf.h. |
| 137 | */ |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 138 | Options options; |
| 139 | |
Ben Lindstrom | 14f31ab | 2001-09-12 17:48:04 +0000 | [diff] [blame] | 140 | /* optional user configfile */ |
| 141 | char *config = NULL; |
| 142 | |
Damien Miller | 5428f64 | 1999-11-25 11:54:57 +1100 | [diff] [blame] | 143 | /* |
| 144 | * Name of the host we are connecting to. This is the name given on the |
| 145 | * command line, or the HostName specified for the user-supplied name in a |
| 146 | * configuration file. |
| 147 | */ |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 148 | char *host; |
| 149 | |
| 150 | /* socket address the host resolves to */ |
Damien Miller | 34132e5 | 2000-01-14 15:45:46 +1100 | [diff] [blame] | 151 | struct sockaddr_storage hostaddr; |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 152 | |
Ben Lindstrom | 5eabda3 | 2001-04-12 23:34:34 +0000 | [diff] [blame] | 153 | /* Private host keys. */ |
Ben Lindstrom | 1bad256 | 2002-06-06 19:57:33 +0000 | [diff] [blame] | 154 | Sensitive sensitive_data; |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 155 | |
| 156 | /* Original real UID. */ |
| 157 | uid_t original_real_uid; |
Ben Lindstrom | f9c4884 | 2002-06-11 16:37:51 +0000 | [diff] [blame] | 158 | uid_t original_effective_uid; |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 159 | |
Damien Miller | 1383bd8 | 2000-04-06 12:32:37 +1000 | [diff] [blame] | 160 | /* command to be executed */ |
| 161 | Buffer command; |
| 162 | |
Damien Miller | 832562e | 2001-01-30 09:30:01 +1100 | [diff] [blame] | 163 | /* Should we execute a command or invoke a subsystem? */ |
| 164 | int subsystem_flag = 0; |
| 165 | |
Damien Miller | 2797f7f | 2002-04-23 21:09:44 +1000 | [diff] [blame] | 166 | /* # of replies received for global requests */ |
Darren Tucker | 9f407c4 | 2008-06-13 04:50:27 +1000 | [diff] [blame] | 167 | static int remote_forward_confirms_received = 0; |
Damien Miller | 2797f7f | 2002-04-23 21:09:44 +1000 | [diff] [blame] | 168 | |
Damien Miller | 8c4e18a | 2002-09-19 12:05:02 +1000 | [diff] [blame] | 169 | /* pid of proxycommand child process */ |
| 170 | pid_t proxy_command_pid = 0; |
| 171 | |
Damien Miller | b1cbfa2 | 2008-05-19 16:00:08 +1000 | [diff] [blame] | 172 | /* mux.c */ |
| 173 | extern int muxserver_sock; |
| 174 | extern u_int muxclient_command; |
Damien Miller | 0e220db | 2004-06-15 10:34:08 +1000 | [diff] [blame] | 175 | |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 176 | /* Prints a help message to the user. This function never returns. */ |
| 177 | |
Ben Lindstrom | bba8121 | 2001-06-25 05:01:22 +0000 | [diff] [blame] | 178 | static void |
Ben Lindstrom | 31ca54a | 2001-02-09 02:11:24 +0000 | [diff] [blame] | 179 | usage(void) |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 180 | { |
Damien Miller | 5095510 | 2004-03-22 09:34:58 +1100 | [diff] [blame] | 181 | fprintf(stderr, |
Darren Tucker | 415bddc | 2007-06-12 23:43:16 +1000 | [diff] [blame] | 182 | "usage: ssh [-1246AaCfgKkMNnqsTtVvXxY] [-b bind_address] [-c cipher_spec]\n" |
Darren Tucker | 895d698 | 2005-10-03 18:18:05 +1000 | [diff] [blame] | 183 | " [-D [bind_address:]port] [-e escape_char] [-F configfile]\n" |
Damien Miller | 02faece | 2005-03-02 12:04:32 +1100 | [diff] [blame] | 184 | " [-i identity_file] [-L [bind_address:]port:host:hostport]\n" |
Damien Miller | f91ee4c | 2005-03-01 21:24:33 +1100 | [diff] [blame] | 185 | " [-l login_name] [-m mac_spec] [-O ctl_cmd] [-o option] [-p port]\n" |
Damien Miller | 02faece | 2005-03-02 12:04:32 +1100 | [diff] [blame] | 186 | " [-R [bind_address:]port:host:hostport] [-S ctl_path]\n" |
Damien Miller | 991dba4 | 2006-07-10 20:16:27 +1000 | [diff] [blame] | 187 | " [-w local_tun[:remote_tun]] [user@]hostname [command]\n" |
Damien Miller | 5095510 | 2004-03-22 09:34:58 +1100 | [diff] [blame] | 188 | ); |
Darren Tucker | e9a9b71 | 2005-12-20 16:15:51 +1100 | [diff] [blame] | 189 | exit(255); |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 190 | } |
| 191 | |
Ben Lindstrom | bba8121 | 2001-06-25 05:01:22 +0000 | [diff] [blame] | 192 | static int ssh_session(void); |
| 193 | static int ssh_session2(void); |
| 194 | static void load_public_identity_files(void); |
Damien Miller | b1cbfa2 | 2008-05-19 16:00:08 +1000 | [diff] [blame] | 195 | |
| 196 | /* from muxclient.c */ |
| 197 | void muxclient(const char *); |
| 198 | void muxserver_listen(void); |
Damien Miller | 1383bd8 | 2000-04-06 12:32:37 +1000 | [diff] [blame] | 199 | |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 200 | /* |
| 201 | * Main program for the ssh client. |
| 202 | */ |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 203 | int |
| 204 | main(int ac, char **av) |
| 205 | { |
Ben Lindstrom | 2415757 | 2002-06-12 16:09:39 +0000 | [diff] [blame] | 206 | int i, opt, exit_status; |
Damien Miller | 9836cf8 | 2003-12-17 16:30:06 +1100 | [diff] [blame] | 207 | char *p, *cp, *line, buf[256]; |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 208 | struct stat st; |
Ben Lindstrom | 086cf21 | 2001-03-05 05:56:40 +0000 | [diff] [blame] | 209 | struct passwd *pw; |
Damien Miller | 67bd062 | 2007-09-17 12:06:57 +1000 | [diff] [blame] | 210 | int dummy, timeout_ms; |
Ben Lindstrom | 5ccf63a | 2001-09-24 20:00:10 +0000 | [diff] [blame] | 211 | extern int optind, optreset; |
Damien Miller | 4f8e669 | 2001-07-14 13:22:53 +1000 | [diff] [blame] | 212 | extern char *optarg; |
Damien Miller | 9651fe6 | 2005-06-26 08:55:25 +1000 | [diff] [blame] | 213 | struct servent *sp; |
Damien Miller | f91ee4c | 2005-03-01 21:24:33 +1100 | [diff] [blame] | 214 | Forward fwd; |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 215 | |
Darren Tucker | ce321d8 | 2005-10-03 18:11:24 +1000 | [diff] [blame] | 216 | /* Ensure that fds 0, 1 and 2 are open or directed to /dev/null */ |
| 217 | sanitise_stdfd(); |
| 218 | |
Damien Miller | 59d3d5b | 2003-08-22 09:34:41 +1000 | [diff] [blame] | 219 | __progname = ssh_get_progname(av[0]); |
Damien Miller | f9b625c | 2000-07-09 22:42:32 +1000 | [diff] [blame] | 220 | init_rng(); |
| 221 | |
Damien Miller | 5428f64 | 1999-11-25 11:54:57 +1100 | [diff] [blame] | 222 | /* |
| 223 | * Save the original real uid. It will be needed later (uid-swapping |
| 224 | * may clobber the real uid). |
| 225 | */ |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 226 | original_real_uid = getuid(); |
| 227 | original_effective_uid = geteuid(); |
Damien Miller | a8e06ce | 2003-11-21 23:48:55 +1100 | [diff] [blame] | 228 | |
Damien Miller | 50b9a60 | 2002-09-04 16:50:06 +1000 | [diff] [blame] | 229 | /* |
| 230 | * Use uid-swapping to give up root privileges for the duration of |
| 231 | * option processing. We will re-instantiate the rights when we are |
| 232 | * ready to create the privileged port, and will permanently drop |
| 233 | * them when the port has been created (actually, when the connection |
| 234 | * has been made, as we may need to create the port several times). |
| 235 | */ |
| 236 | PRIV_END; |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 237 | |
Damien Miller | 05dd795 | 2000-10-01 00:42:48 +1100 | [diff] [blame] | 238 | #ifdef HAVE_SETRLIMIT |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 239 | /* If we are installed setuid root be careful to not drop core. */ |
| 240 | if (original_real_uid != original_effective_uid) { |
| 241 | struct rlimit rlim; |
| 242 | rlim.rlim_cur = rlim.rlim_max = 0; |
| 243 | if (setrlimit(RLIMIT_CORE, &rlim) < 0) |
| 244 | fatal("setrlimit failed: %.100s", strerror(errno)); |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 245 | } |
Damien Miller | bac2d8a | 2000-09-05 16:13:06 +1100 | [diff] [blame] | 246 | #endif |
Ben Lindstrom | 3fcf1a2 | 2001-04-08 18:26:59 +0000 | [diff] [blame] | 247 | /* Get user data. */ |
| 248 | pw = getpwuid(original_real_uid); |
| 249 | if (!pw) { |
Damien Miller | 996acd2 | 2003-04-09 20:59:48 +1000 | [diff] [blame] | 250 | logit("You don't exist, go away!"); |
Darren Tucker | e9a9b71 | 2005-12-20 16:15:51 +1100 | [diff] [blame] | 251 | exit(255); |
Ben Lindstrom | 3fcf1a2 | 2001-04-08 18:26:59 +0000 | [diff] [blame] | 252 | } |
| 253 | /* Take a copy of the returned structure. */ |
| 254 | pw = pwcopy(pw); |
| 255 | |
Damien Miller | 5428f64 | 1999-11-25 11:54:57 +1100 | [diff] [blame] | 256 | /* |
Damien Miller | 5428f64 | 1999-11-25 11:54:57 +1100 | [diff] [blame] | 257 | * Set our umask to something reasonable, as some files are created |
| 258 | * with the default umask. This will make them world-readable but |
| 259 | * writable only by the owner, which is ok for all files for which we |
| 260 | * don't set the modes explicitly. |
| 261 | */ |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 262 | umask(022); |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 263 | |
Darren Tucker | d6173c0 | 2008-06-13 04:52:53 +1000 | [diff] [blame] | 264 | /* |
| 265 | * Initialize option structure to indicate that no values have been |
| 266 | * set. |
| 267 | */ |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 268 | initialize_options(&options); |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 269 | |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 270 | /* Parse command-line arguments. */ |
| 271 | host = NULL; |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 272 | |
Damien Miller | 2ecb6bd | 2006-03-15 12:03:53 +1100 | [diff] [blame] | 273 | again: |
Darren Tucker | d6173c0 | 2008-06-13 04:52:53 +1000 | [diff] [blame] | 274 | while ((opt = getopt(ac, av, "1246ab:c:e:fgi:kl:m:no:p:qstvx" |
| 275 | "ACD:F:I:KL:MNO:PR:S:TVw:XY")) != -1) { |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 276 | switch (opt) { |
Ben Lindstrom | 1e7d306 | 2001-02-09 02:36:43 +0000 | [diff] [blame] | 277 | case '1': |
| 278 | options.protocol = SSH_PROTO_1; |
| 279 | break; |
Damien Miller | 4af5130 | 2000-04-16 11:18:38 +1000 | [diff] [blame] | 280 | case '2': |
| 281 | options.protocol = SSH_PROTO_2; |
| 282 | break; |
Damien Miller | 34132e5 | 2000-01-14 15:45:46 +1100 | [diff] [blame] | 283 | case '4': |
Darren Tucker | 0a4f04b | 2003-07-03 20:37:47 +1000 | [diff] [blame] | 284 | options.address_family = AF_INET; |
Damien Miller | 34132e5 | 2000-01-14 15:45:46 +1100 | [diff] [blame] | 285 | break; |
Damien Miller | 34132e5 | 2000-01-14 15:45:46 +1100 | [diff] [blame] | 286 | case '6': |
Darren Tucker | 0a4f04b | 2003-07-03 20:37:47 +1000 | [diff] [blame] | 287 | options.address_family = AF_INET6; |
Damien Miller | 34132e5 | 2000-01-14 15:45:46 +1100 | [diff] [blame] | 288 | break; |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 289 | case 'n': |
| 290 | stdin_null_flag = 1; |
| 291 | break; |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 292 | case 'f': |
| 293 | fork_after_authentication_flag = 1; |
| 294 | stdin_null_flag = 1; |
| 295 | break; |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 296 | case 'x': |
| 297 | options.forward_x11 = 0; |
| 298 | break; |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 299 | case 'X': |
| 300 | options.forward_x11 = 1; |
| 301 | break; |
Darren Tucker | 0a118da | 2003-10-15 15:54:32 +1000 | [diff] [blame] | 302 | case 'Y': |
| 303 | options.forward_x11 = 1; |
| 304 | options.forward_x11_trusted = 1; |
| 305 | break; |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 306 | case 'g': |
| 307 | options.gateway_ports = 1; |
| 308 | break; |
Darren Tucker | 7ebfc10 | 2004-11-07 20:06:19 +1100 | [diff] [blame] | 309 | case 'O': |
| 310 | if (strcmp(optarg, "check") == 0) |
Damien Miller | b1cbfa2 | 2008-05-19 16:00:08 +1000 | [diff] [blame] | 311 | muxclient_command = SSHMUX_COMMAND_ALIVE_CHECK; |
Darren Tucker | 7ebfc10 | 2004-11-07 20:06:19 +1100 | [diff] [blame] | 312 | else if (strcmp(optarg, "exit") == 0) |
Damien Miller | b1cbfa2 | 2008-05-19 16:00:08 +1000 | [diff] [blame] | 313 | muxclient_command = SSHMUX_COMMAND_TERMINATE; |
Darren Tucker | 7ebfc10 | 2004-11-07 20:06:19 +1100 | [diff] [blame] | 314 | else |
| 315 | fatal("Invalid multiplex command."); |
| 316 | break; |
Damien Miller | 147bba3 | 2002-09-04 16:46:06 +1000 | [diff] [blame] | 317 | case 'P': /* deprecated */ |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 318 | options.use_privileged_port = 0; |
| 319 | break; |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 320 | case 'a': |
| 321 | options.forward_agent = 0; |
| 322 | break; |
Damien Miller | b1715dc | 2000-05-30 13:44:51 +1000 | [diff] [blame] | 323 | case 'A': |
| 324 | options.forward_agent = 1; |
| 325 | break; |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 326 | case 'k': |
Damien Miller | e0113cc | 2003-11-24 13:10:09 +1100 | [diff] [blame] | 327 | options.gss_deleg_creds = 0; |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 328 | break; |
Darren Tucker | 415bddc | 2007-06-12 23:43:16 +1000 | [diff] [blame] | 329 | case 'K': |
| 330 | options.gss_authentication = 1; |
| 331 | options.gss_deleg_creds = 1; |
| 332 | break; |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 333 | case 'i': |
| 334 | if (stat(optarg, &st) < 0) { |
Damien Miller | f461445 | 2001-07-14 12:18:10 +1000 | [diff] [blame] | 335 | fprintf(stderr, "Warning: Identity file %s " |
Damien Miller | 3eb48b6 | 2005-03-01 21:15:46 +1100 | [diff] [blame] | 336 | "not accessible: %s.\n", optarg, |
| 337 | strerror(errno)); |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 338 | break; |
| 339 | } |
Damien Miller | f461445 | 2001-07-14 12:18:10 +1000 | [diff] [blame] | 340 | if (options.num_identity_files >= |
| 341 | SSH_MAX_IDENTITY_FILES) |
| 342 | fatal("Too many identity files specified " |
| 343 | "(max %d)", SSH_MAX_IDENTITY_FILES); |
| 344 | options.identity_files[options.num_identity_files++] = |
| 345 | xstrdup(optarg); |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 346 | break; |
Ben Lindstrom | c5b6800 | 2001-07-04 04:52:03 +0000 | [diff] [blame] | 347 | case 'I': |
| 348 | #ifdef SMARTCARD |
Ben Lindstrom | f7db3bb | 2001-08-06 21:35:51 +0000 | [diff] [blame] | 349 | options.smartcard_device = xstrdup(optarg); |
Ben Lindstrom | bcc1808 | 2001-08-06 21:59:25 +0000 | [diff] [blame] | 350 | #else |
Ben Lindstrom | c5b6800 | 2001-07-04 04:52:03 +0000 | [diff] [blame] | 351 | fprintf(stderr, "no support for smartcards.\n"); |
Ben Lindstrom | bcc1808 | 2001-08-06 21:59:25 +0000 | [diff] [blame] | 352 | #endif |
Ben Lindstrom | c5b6800 | 2001-07-04 04:52:03 +0000 | [diff] [blame] | 353 | break; |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 354 | case 't': |
Ben Lindstrom | 4dccfa5 | 2000-12-28 16:40:05 +0000 | [diff] [blame] | 355 | if (tty_flag) |
| 356 | force_tty_flag = 1; |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 357 | tty_flag = 1; |
| 358 | break; |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 359 | case 'v': |
Darren Tucker | e98dfa3 | 2003-07-19 19:54:31 +1000 | [diff] [blame] | 360 | if (debug_flag == 0) { |
Damien Miller | e4340be | 2000-09-16 13:29:08 +1100 | [diff] [blame] | 361 | debug_flag = 1; |
| 362 | options.log_level = SYSLOG_LEVEL_DEBUG1; |
Darren Tucker | e98dfa3 | 2003-07-19 19:54:31 +1000 | [diff] [blame] | 363 | } else { |
| 364 | if (options.log_level < SYSLOG_LEVEL_DEBUG3) |
| 365 | options.log_level++; |
Damien Miller | e4340be | 2000-09-16 13:29:08 +1100 | [diff] [blame] | 366 | break; |
Darren Tucker | e98dfa3 | 2003-07-19 19:54:31 +1000 | [diff] [blame] | 367 | } |
Darren Tucker | e9bf984 | 2004-11-05 20:05:32 +1100 | [diff] [blame] | 368 | /* FALLTHROUGH */ |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 369 | case 'V': |
Damien Miller | 0c889cd | 2004-03-22 09:36:00 +1100 | [diff] [blame] | 370 | fprintf(stderr, "%s, %s\n", |
Damien Miller | 2aa6d3c | 2004-09-12 16:53:04 +1000 | [diff] [blame] | 371 | SSH_RELEASE, SSLeay_version(SSLEAY_VERSION)); |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 372 | if (opt == 'V') |
| 373 | exit(0); |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 374 | break; |
Damien Miller | d27b947 | 2005-12-13 19:29:02 +1100 | [diff] [blame] | 375 | case 'w': |
Damien Miller | 7b58e80 | 2005-12-13 19:33:19 +1100 | [diff] [blame] | 376 | if (options.tun_open == -1) |
| 377 | options.tun_open = SSH_TUNMODE_DEFAULT; |
Damien Miller | d27b947 | 2005-12-13 19:29:02 +1100 | [diff] [blame] | 378 | options.tun_local = a2tun(optarg, &options.tun_remote); |
Damien Miller | 7b58e80 | 2005-12-13 19:33:19 +1100 | [diff] [blame] | 379 | if (options.tun_local == SSH_TUNID_ERR) { |
Darren Tucker | d6173c0 | 2008-06-13 04:52:53 +1000 | [diff] [blame] | 380 | fprintf(stderr, |
| 381 | "Bad tun device '%s'\n", optarg); |
Darren Tucker | e9a9b71 | 2005-12-20 16:15:51 +1100 | [diff] [blame] | 382 | exit(255); |
Damien Miller | d27b947 | 2005-12-13 19:29:02 +1100 | [diff] [blame] | 383 | } |
| 384 | break; |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 385 | case 'q': |
| 386 | options.log_level = SYSLOG_LEVEL_QUIET; |
| 387 | break; |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 388 | case 'e': |
| 389 | if (optarg[0] == '^' && optarg[2] == 0 && |
Damien Miller | f461445 | 2001-07-14 12:18:10 +1000 | [diff] [blame] | 390 | (u_char) optarg[1] >= 64 && |
| 391 | (u_char) optarg[1] < 128) |
Ben Lindstrom | 46c1622 | 2000-12-22 01:43:59 +0000 | [diff] [blame] | 392 | options.escape_char = (u_char) optarg[1] & 31; |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 393 | else if (strlen(optarg) == 1) |
Ben Lindstrom | 46c1622 | 2000-12-22 01:43:59 +0000 | [diff] [blame] | 394 | options.escape_char = (u_char) optarg[0]; |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 395 | else if (strcmp(optarg, "none") == 0) |
Ben Lindstrom | 2b1f71b | 2001-06-05 20:32:21 +0000 | [diff] [blame] | 396 | options.escape_char = SSH_ESCAPECHAR_NONE; |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 397 | else { |
Damien Miller | f461445 | 2001-07-14 12:18:10 +1000 | [diff] [blame] | 398 | fprintf(stderr, "Bad escape character '%s'.\n", |
| 399 | optarg); |
Darren Tucker | e9a9b71 | 2005-12-20 16:15:51 +1100 | [diff] [blame] | 400 | exit(255); |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 401 | } |
| 402 | break; |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 403 | case 'c': |
Damien Miller | eba71ba | 2000-04-29 23:57:08 +1000 | [diff] [blame] | 404 | if (ciphers_valid(optarg)) { |
| 405 | /* SSH2 only */ |
| 406 | options.ciphers = xstrdup(optarg); |
Darren Tucker | 5cb30ad | 2004-08-12 22:40:24 +1000 | [diff] [blame] | 407 | options.cipher = SSH_CIPHER_INVALID; |
Damien Miller | eba71ba | 2000-04-29 23:57:08 +1000 | [diff] [blame] | 408 | } else { |
| 409 | /* SSH1 only */ |
Damien Miller | e39cacc | 2000-11-29 12:18:44 +1100 | [diff] [blame] | 410 | options.cipher = cipher_number(optarg); |
| 411 | if (options.cipher == -1) { |
Damien Miller | f461445 | 2001-07-14 12:18:10 +1000 | [diff] [blame] | 412 | fprintf(stderr, |
| 413 | "Unknown cipher type '%s'\n", |
| 414 | optarg); |
Darren Tucker | e9a9b71 | 2005-12-20 16:15:51 +1100 | [diff] [blame] | 415 | exit(255); |
Damien Miller | eba71ba | 2000-04-29 23:57:08 +1000 | [diff] [blame] | 416 | } |
Damien Miller | f461445 | 2001-07-14 12:18:10 +1000 | [diff] [blame] | 417 | if (options.cipher == SSH_CIPHER_3DES) |
Damien Miller | e39cacc | 2000-11-29 12:18:44 +1100 | [diff] [blame] | 418 | options.ciphers = "3des-cbc"; |
Damien Miller | f461445 | 2001-07-14 12:18:10 +1000 | [diff] [blame] | 419 | else if (options.cipher == SSH_CIPHER_BLOWFISH) |
Damien Miller | e39cacc | 2000-11-29 12:18:44 +1100 | [diff] [blame] | 420 | options.ciphers = "blowfish-cbc"; |
Damien Miller | f461445 | 2001-07-14 12:18:10 +1000 | [diff] [blame] | 421 | else |
Damien Miller | e39cacc | 2000-11-29 12:18:44 +1100 | [diff] [blame] | 422 | options.ciphers = (char *)-1; |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 423 | } |
| 424 | break; |
Ben Lindstrom | 06b33aa | 2001-02-15 03:01:59 +0000 | [diff] [blame] | 425 | case 'm': |
| 426 | if (mac_valid(optarg)) |
| 427 | options.macs = xstrdup(optarg); |
| 428 | else { |
Damien Miller | f461445 | 2001-07-14 12:18:10 +1000 | [diff] [blame] | 429 | fprintf(stderr, "Unknown mac type '%s'\n", |
| 430 | optarg); |
Darren Tucker | e9a9b71 | 2005-12-20 16:15:51 +1100 | [diff] [blame] | 431 | exit(255); |
Ben Lindstrom | 06b33aa | 2001-02-15 03:01:59 +0000 | [diff] [blame] | 432 | } |
| 433 | break; |
Damien Miller | 0e220db | 2004-06-15 10:34:08 +1000 | [diff] [blame] | 434 | case 'M': |
Damien Miller | d14b1e7 | 2005-06-16 13:19:41 +1000 | [diff] [blame] | 435 | if (options.control_master == SSHCTL_MASTER_YES) |
| 436 | options.control_master = SSHCTL_MASTER_ASK; |
| 437 | else |
| 438 | options.control_master = SSHCTL_MASTER_YES; |
Damien Miller | 0e220db | 2004-06-15 10:34:08 +1000 | [diff] [blame] | 439 | break; |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 440 | case 'p': |
Ben Lindstrom | 19066a1 | 2001-04-12 23:39:26 +0000 | [diff] [blame] | 441 | options.port = a2port(optarg); |
| 442 | if (options.port == 0) { |
Ben Lindstrom | 146edb9 | 2001-04-11 23:06:28 +0000 | [diff] [blame] | 443 | fprintf(stderr, "Bad port '%s'\n", optarg); |
Darren Tucker | e9a9b71 | 2005-12-20 16:15:51 +1100 | [diff] [blame] | 444 | exit(255); |
Ben Lindstrom | 146edb9 | 2001-04-11 23:06:28 +0000 | [diff] [blame] | 445 | } |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 446 | break; |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 447 | case 'l': |
| 448 | options.user = optarg; |
| 449 | break; |
Ben Lindstrom | 1a17471 | 2001-09-12 17:56:15 +0000 | [diff] [blame] | 450 | |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 451 | case 'L': |
Damien Miller | f91ee4c | 2005-03-01 21:24:33 +1100 | [diff] [blame] | 452 | if (parse_forward(&fwd, optarg)) |
| 453 | add_local_forward(&options, &fwd); |
| 454 | else { |
Damien Miller | f461445 | 2001-07-14 12:18:10 +1000 | [diff] [blame] | 455 | fprintf(stderr, |
Damien Miller | f91ee4c | 2005-03-01 21:24:33 +1100 | [diff] [blame] | 456 | "Bad local forwarding specification '%s'\n", |
Damien Miller | f461445 | 2001-07-14 12:18:10 +1000 | [diff] [blame] | 457 | optarg); |
Darren Tucker | e9a9b71 | 2005-12-20 16:15:51 +1100 | [diff] [blame] | 458 | exit(255); |
Ben Lindstrom | 1a17471 | 2001-09-12 17:56:15 +0000 | [diff] [blame] | 459 | } |
Damien Miller | f91ee4c | 2005-03-01 21:24:33 +1100 | [diff] [blame] | 460 | break; |
| 461 | |
| 462 | case 'R': |
| 463 | if (parse_forward(&fwd, optarg)) { |
| 464 | add_remote_forward(&options, &fwd); |
| 465 | } else { |
| 466 | fprintf(stderr, |
| 467 | "Bad remote forwarding specification " |
| 468 | "'%s'\n", optarg); |
Darren Tucker | e9a9b71 | 2005-12-20 16:15:51 +1100 | [diff] [blame] | 469 | exit(255); |
Damien Miller | f91ee4c | 2005-03-01 21:24:33 +1100 | [diff] [blame] | 470 | } |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 471 | break; |
Ben Lindstrom | 3bb4f9d | 2001-04-08 18:30:26 +0000 | [diff] [blame] | 472 | |
| 473 | case 'D': |
Damien Miller | f91ee4c | 2005-03-01 21:24:33 +1100 | [diff] [blame] | 474 | cp = p = xstrdup(optarg); |
| 475 | memset(&fwd, '\0', sizeof(fwd)); |
| 476 | fwd.connect_host = "socks"; |
| 477 | if ((fwd.listen_host = hpdelim(&cp)) == NULL) { |
| 478 | fprintf(stderr, "Bad dynamic forwarding " |
| 479 | "specification '%.100s'\n", optarg); |
Darren Tucker | e9a9b71 | 2005-12-20 16:15:51 +1100 | [diff] [blame] | 480 | exit(255); |
Damien Miller | f91ee4c | 2005-03-01 21:24:33 +1100 | [diff] [blame] | 481 | } |
| 482 | if (cp != NULL) { |
| 483 | fwd.listen_port = a2port(cp); |
Darren Tucker | d6173c0 | 2008-06-13 04:52:53 +1000 | [diff] [blame] | 484 | fwd.listen_host = |
| 485 | cleanhostname(fwd.listen_host); |
Damien Miller | f91ee4c | 2005-03-01 21:24:33 +1100 | [diff] [blame] | 486 | } else { |
| 487 | fwd.listen_port = a2port(fwd.listen_host); |
Damien Miller | be1045d | 2005-08-12 22:10:56 +1000 | [diff] [blame] | 488 | fwd.listen_host = NULL; |
Damien Miller | f91ee4c | 2005-03-01 21:24:33 +1100 | [diff] [blame] | 489 | } |
| 490 | |
| 491 | if (fwd.listen_port == 0) { |
Damien Miller | f461445 | 2001-07-14 12:18:10 +1000 | [diff] [blame] | 492 | fprintf(stderr, "Bad dynamic port '%s'\n", |
| 493 | optarg); |
Darren Tucker | e9a9b71 | 2005-12-20 16:15:51 +1100 | [diff] [blame] | 494 | exit(255); |
Ben Lindstrom | 146edb9 | 2001-04-11 23:06:28 +0000 | [diff] [blame] | 495 | } |
Damien Miller | f91ee4c | 2005-03-01 21:24:33 +1100 | [diff] [blame] | 496 | add_local_forward(&options, &fwd); |
| 497 | xfree(p); |
Ben Lindstrom | 3bb4f9d | 2001-04-08 18:30:26 +0000 | [diff] [blame] | 498 | break; |
| 499 | |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 500 | case 'C': |
| 501 | options.compression = 1; |
| 502 | break; |
Damien Miller | 1383bd8 | 2000-04-06 12:32:37 +1000 | [diff] [blame] | 503 | case 'N': |
| 504 | no_shell_flag = 1; |
| 505 | no_tty_flag = 1; |
| 506 | break; |
Damien Miller | 1383bd8 | 2000-04-06 12:32:37 +1000 | [diff] [blame] | 507 | case 'T': |
| 508 | no_tty_flag = 1; |
| 509 | break; |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 510 | case 'o': |
| 511 | dummy = 1; |
Damien Miller | 9836cf8 | 2003-12-17 16:30:06 +1100 | [diff] [blame] | 512 | line = xstrdup(optarg); |
Damien Miller | f461445 | 2001-07-14 12:18:10 +1000 | [diff] [blame] | 513 | if (process_config_line(&options, host ? host : "", |
Damien Miller | 9836cf8 | 2003-12-17 16:30:06 +1100 | [diff] [blame] | 514 | line, "command-line", 0, &dummy) != 0) |
Darren Tucker | e9a9b71 | 2005-12-20 16:15:51 +1100 | [diff] [blame] | 515 | exit(255); |
Damien Miller | 9836cf8 | 2003-12-17 16:30:06 +1100 | [diff] [blame] | 516 | xfree(line); |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 517 | break; |
Damien Miller | 832562e | 2001-01-30 09:30:01 +1100 | [diff] [blame] | 518 | case 's': |
| 519 | subsystem_flag = 1; |
| 520 | break; |
Damien Miller | 0e220db | 2004-06-15 10:34:08 +1000 | [diff] [blame] | 521 | case 'S': |
| 522 | if (options.control_path != NULL) |
| 523 | free(options.control_path); |
| 524 | options.control_path = xstrdup(optarg); |
Damien Miller | 0e220db | 2004-06-15 10:34:08 +1000 | [diff] [blame] | 525 | break; |
Ben Lindstrom | e0f8804 | 2001-04-30 13:06:24 +0000 | [diff] [blame] | 526 | case 'b': |
| 527 | options.bind_address = optarg; |
| 528 | break; |
Ben Lindstrom | 14f31ab | 2001-09-12 17:48:04 +0000 | [diff] [blame] | 529 | case 'F': |
| 530 | config = optarg; |
| 531 | break; |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 532 | default: |
| 533 | usage(); |
| 534 | } |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 535 | } |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 536 | |
Damien Miller | f461445 | 2001-07-14 12:18:10 +1000 | [diff] [blame] | 537 | ac -= optind; |
| 538 | av += optind; |
| 539 | |
| 540 | if (ac > 0 && !host && **av != '-') { |
Ben Lindstrom | c276c12 | 2002-12-23 02:14:51 +0000 | [diff] [blame] | 541 | if (strrchr(*av, '@')) { |
Damien Miller | f461445 | 2001-07-14 12:18:10 +1000 | [diff] [blame] | 542 | p = xstrdup(*av); |
Ben Lindstrom | c276c12 | 2002-12-23 02:14:51 +0000 | [diff] [blame] | 543 | cp = strrchr(p, '@'); |
Damien Miller | f461445 | 2001-07-14 12:18:10 +1000 | [diff] [blame] | 544 | if (cp == NULL || cp == p) |
| 545 | usage(); |
| 546 | options.user = p; |
| 547 | *cp = '\0'; |
| 548 | host = ++cp; |
| 549 | } else |
| 550 | host = *av; |
Ben Lindstrom | b9fa691 | 2002-12-23 02:24:54 +0000 | [diff] [blame] | 551 | if (ac > 1) { |
| 552 | optind = optreset = 1; |
Damien Miller | f461445 | 2001-07-14 12:18:10 +1000 | [diff] [blame] | 553 | goto again; |
| 554 | } |
Ben Lindstrom | b9fa691 | 2002-12-23 02:24:54 +0000 | [diff] [blame] | 555 | ac--, av++; |
Damien Miller | f461445 | 2001-07-14 12:18:10 +1000 | [diff] [blame] | 556 | } |
| 557 | |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 558 | /* Check that we got a host name. */ |
| 559 | if (!host) |
| 560 | usage(); |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 561 | |
Damien Miller | cb5e44a | 2000-09-29 12:12:36 +1100 | [diff] [blame] | 562 | SSLeay_add_all_algorithms(); |
Damien Miller | 0bc1bd8 | 2000-11-13 22:57:25 +1100 | [diff] [blame] | 563 | ERR_load_crypto_strings(); |
Damien Miller | cb5e44a | 2000-09-29 12:12:36 +1100 | [diff] [blame] | 564 | |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 565 | /* Initialize the command to execute on remote host. */ |
| 566 | buffer_init(&command); |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 567 | |
Damien Miller | 5428f64 | 1999-11-25 11:54:57 +1100 | [diff] [blame] | 568 | /* |
| 569 | * Save the command to execute on the remote host in a buffer. There |
| 570 | * is no limit on the length of the command, except by the maximum |
| 571 | * packet size. Also sets the tty flag if there is no command. |
| 572 | */ |
Damien Miller | f461445 | 2001-07-14 12:18:10 +1000 | [diff] [blame] | 573 | if (!ac) { |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 574 | /* No command specified - execute shell on a tty. */ |
| 575 | tty_flag = 1; |
Damien Miller | 832562e | 2001-01-30 09:30:01 +1100 | [diff] [blame] | 576 | if (subsystem_flag) { |
Damien Miller | f461445 | 2001-07-14 12:18:10 +1000 | [diff] [blame] | 577 | fprintf(stderr, |
| 578 | "You must specify a subsystem to invoke.\n"); |
Damien Miller | 832562e | 2001-01-30 09:30:01 +1100 | [diff] [blame] | 579 | usage(); |
| 580 | } |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 581 | } else { |
Damien Miller | f461445 | 2001-07-14 12:18:10 +1000 | [diff] [blame] | 582 | /* A command has been specified. Store it into the buffer. */ |
| 583 | for (i = 0; i < ac; i++) { |
| 584 | if (i) |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 585 | buffer_append(&command, " ", 1); |
| 586 | buffer_append(&command, av[i], strlen(av[i])); |
| 587 | } |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 588 | } |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 589 | |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 590 | /* Cannot fork to background if no command. */ |
Darren Tucker | d6173c0 | 2008-06-13 04:52:53 +1000 | [diff] [blame] | 591 | if (fork_after_authentication_flag && buffer_len(&command) == 0 && |
| 592 | !no_shell_flag) |
| 593 | fatal("Cannot fork into background without a command " |
| 594 | "to execute."); |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 595 | |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 596 | /* Allocate a tty by default if no command specified. */ |
| 597 | if (buffer_len(&command) == 0) |
| 598 | tty_flag = 1; |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 599 | |
Ben Lindstrom | a962c2f | 2002-07-04 00:14:17 +0000 | [diff] [blame] | 600 | /* Force no tty */ |
Ben Lindstrom | c72745a | 2000-12-02 19:03:54 +0000 | [diff] [blame] | 601 | if (no_tty_flag) |
| 602 | tty_flag = 0; |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 603 | /* Do not allocate a tty if stdin is not a tty. */ |
Damien Miller | ddee575 | 2005-05-26 12:05:05 +1000 | [diff] [blame] | 604 | if ((!isatty(fileno(stdin)) || stdin_null_flag) && !force_tty_flag) { |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 605 | if (tty_flag) |
Darren Tucker | d6173c0 | 2008-06-13 04:52:53 +1000 | [diff] [blame] | 606 | logit("Pseudo-terminal will not be allocated because " |
| 607 | "stdin is not a terminal."); |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 608 | tty_flag = 0; |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 609 | } |
Damien Miller | 1383bd8 | 2000-04-06 12:32:37 +1000 | [diff] [blame] | 610 | |
Ben Lindstrom | 8a432f5 | 2001-03-05 07:24:46 +0000 | [diff] [blame] | 611 | /* |
| 612 | * Initialize "log" output. Since we are the client all output |
| 613 | * actually goes to stderr. |
| 614 | */ |
Darren Tucker | d6173c0 | 2008-06-13 04:52:53 +1000 | [diff] [blame] | 615 | log_init(av[0], |
| 616 | options.log_level == -1 ? SYSLOG_LEVEL_INFO : options.log_level, |
Ben Lindstrom | 2b64652 | 2001-04-12 16:16:57 +0000 | [diff] [blame] | 617 | SYSLOG_FACILITY_USER, 1); |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 618 | |
Ben Lindstrom | 14f31ab | 2001-09-12 17:48:04 +0000 | [diff] [blame] | 619 | /* |
| 620 | * Read per-user configuration file. Ignore the system wide config |
| 621 | * file if the user specifies a config file on the command line. |
| 622 | */ |
| 623 | if (config != NULL) { |
Damien Miller | 914420f | 2004-04-20 20:14:07 +1000 | [diff] [blame] | 624 | if (!read_config_file(config, host, &options, 0)) |
Ben Lindstrom | edc0cf2 | 2001-09-12 18:32:20 +0000 | [diff] [blame] | 625 | fatal("Can't open user config file %.100s: " |
| 626 | "%.100s", config, strerror(errno)); |
Damien Miller | 8016390 | 2007-01-05 16:30:16 +1100 | [diff] [blame] | 627 | } else { |
Ben Lindstrom | 14f31ab | 2001-09-12 17:48:04 +0000 | [diff] [blame] | 628 | snprintf(buf, sizeof buf, "%.100s/%.100s", pw->pw_dir, |
| 629 | _PATH_SSH_USER_CONFFILE); |
Damien Miller | 57a4476 | 2004-04-20 20:11:57 +1000 | [diff] [blame] | 630 | (void)read_config_file(buf, host, &options, 1); |
Ben Lindstrom | 83f07d1 | 2001-10-03 17:22:29 +0000 | [diff] [blame] | 631 | |
| 632 | /* Read systemwide configuration file after use config. */ |
Darren Tucker | fc95970 | 2004-07-17 16:12:08 +1000 | [diff] [blame] | 633 | (void)read_config_file(_PATH_HOST_CONFIG_FILE, host, |
Damien Miller | 57a4476 | 2004-04-20 20:11:57 +1000 | [diff] [blame] | 634 | &options, 0); |
Ben Lindstrom | 14f31ab | 2001-09-12 17:48:04 +0000 | [diff] [blame] | 635 | } |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 636 | |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 637 | /* Fill configuration defaults. */ |
| 638 | fill_default_options(&options); |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 639 | |
Darren Tucker | 0a4f04b | 2003-07-03 20:37:47 +1000 | [diff] [blame] | 640 | channel_set_af(options.address_family); |
| 641 | |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 642 | /* reinit */ |
Ben Lindstrom | 8a432f5 | 2001-03-05 07:24:46 +0000 | [diff] [blame] | 643 | log_init(av[0], options.log_level, SYSLOG_FACILITY_USER, 1); |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 644 | |
Damien Miller | 60bc517 | 2001-03-19 09:38:15 +1100 | [diff] [blame] | 645 | seed_rng(); |
| 646 | |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 647 | if (options.user == NULL) |
| 648 | options.user = xstrdup(pw->pw_name); |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 649 | |
Darren Tucker | f6b01b7 | 2008-06-13 04:56:37 +1000 | [diff] [blame] | 650 | /* Get default port if port has not been set. */ |
| 651 | if (options.port == 0) { |
| 652 | sp = getservbyname(SSH_SERVICE_NAME, "tcp"); |
| 653 | options.port = sp ? ntohs(sp->s_port) : SSH_DEFAULT_PORT; |
| 654 | } |
| 655 | |
| 656 | if (options.local_command != NULL) { |
| 657 | char thishost[NI_MAXHOST]; |
| 658 | |
| 659 | if (gethostname(thishost, sizeof(thishost)) == -1) |
| 660 | fatal("gethostname: %s", strerror(errno)); |
| 661 | snprintf(buf, sizeof(buf), "%d", options.port); |
| 662 | debug3("expanding LocalCommand: %s", options.local_command); |
| 663 | cp = options.local_command; |
| 664 | options.local_command = percent_expand(cp, "d", pw->pw_dir, |
| 665 | "h", options.hostname? options.hostname : host, |
| 666 | "l", thishost, "n", host, "r", options.user, "p", buf, |
| 667 | "u", pw->pw_name, (char *)NULL); |
| 668 | debug3("expanded LocalCommand: %s", options.local_command); |
| 669 | xfree(cp); |
| 670 | } |
| 671 | |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 672 | if (options.hostname != NULL) |
| 673 | host = options.hostname; |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 674 | |
Darren Tucker | 3f521e2 | 2003-07-03 16:20:42 +1000 | [diff] [blame] | 675 | /* force lowercase for hostkey matching */ |
| 676 | if (options.host_key_alias != NULL) { |
| 677 | for (p = options.host_key_alias; *p; p++) |
| 678 | if (isupper(*p)) |
Damien Miller | 1d2b670 | 2006-03-26 14:09:54 +1100 | [diff] [blame] | 679 | *p = (char)tolower(*p); |
Darren Tucker | 3f521e2 | 2003-07-03 16:20:42 +1000 | [diff] [blame] | 680 | } |
| 681 | |
Damien Miller | 9f1e33a | 2003-02-24 11:57:32 +1100 | [diff] [blame] | 682 | if (options.proxy_command != NULL && |
Darren Tucker | 32e42c7 | 2007-12-02 23:01:03 +1100 | [diff] [blame] | 683 | strcmp(options.proxy_command, "none") == 0) { |
| 684 | xfree(options.proxy_command); |
Damien Miller | 9f1e33a | 2003-02-24 11:57:32 +1100 | [diff] [blame] | 685 | options.proxy_command = NULL; |
Darren Tucker | 32e42c7 | 2007-12-02 23:01:03 +1100 | [diff] [blame] | 686 | } |
Damien Miller | 8f74c8f | 2005-06-26 08:56:03 +1000 | [diff] [blame] | 687 | if (options.control_path != NULL && |
Darren Tucker | 32e42c7 | 2007-12-02 23:01:03 +1100 | [diff] [blame] | 688 | strcmp(options.control_path, "none") == 0) { |
| 689 | xfree(options.control_path); |
Damien Miller | 8f74c8f | 2005-06-26 08:56:03 +1000 | [diff] [blame] | 690 | options.control_path = NULL; |
Darren Tucker | 32e42c7 | 2007-12-02 23:01:03 +1100 | [diff] [blame] | 691 | } |
Damien Miller | 9f1e33a | 2003-02-24 11:57:32 +1100 | [diff] [blame] | 692 | |
Damien Miller | 0e220db | 2004-06-15 10:34:08 +1000 | [diff] [blame] | 693 | if (options.control_path != NULL) { |
Damien Miller | 6b1d53c | 2006-03-31 23:13:21 +1100 | [diff] [blame] | 694 | char thishost[NI_MAXHOST]; |
Damien Miller | 3ec54c7 | 2006-03-15 11:30:13 +1100 | [diff] [blame] | 695 | |
Damien Miller | 6b1d53c | 2006-03-31 23:13:21 +1100 | [diff] [blame] | 696 | if (gethostname(thishost, sizeof(thishost)) == -1) |
Damien Miller | 3ec54c7 | 2006-03-15 11:30:13 +1100 | [diff] [blame] | 697 | fatal("gethostname: %s", strerror(errno)); |
Damien Miller | 6476cad | 2005-06-16 13:18:34 +1000 | [diff] [blame] | 698 | snprintf(buf, sizeof(buf), "%d", options.port); |
| 699 | cp = tilde_expand_filename(options.control_path, |
| 700 | original_real_uid); |
Darren Tucker | 32e42c7 | 2007-12-02 23:01:03 +1100 | [diff] [blame] | 701 | xfree(options.control_path); |
Damien Miller | 6476cad | 2005-06-16 13:18:34 +1000 | [diff] [blame] | 702 | options.control_path = percent_expand(cp, "p", buf, "h", host, |
Damien Miller | 6b1d53c | 2006-03-31 23:13:21 +1100 | [diff] [blame] | 703 | "r", options.user, "l", thishost, (char *)NULL); |
Damien Miller | 6476cad | 2005-06-16 13:18:34 +1000 | [diff] [blame] | 704 | xfree(cp); |
Damien Miller | 0e220db | 2004-06-15 10:34:08 +1000 | [diff] [blame] | 705 | } |
Damien Miller | b1cbfa2 | 2008-05-19 16:00:08 +1000 | [diff] [blame] | 706 | if (muxclient_command != 0 && options.control_path == NULL) |
Darren Tucker | 0814d31 | 2005-06-01 23:08:51 +1000 | [diff] [blame] | 707 | fatal("No ControlPath specified for \"-O\" command"); |
Damien Miller | d14b1e7 | 2005-06-16 13:19:41 +1000 | [diff] [blame] | 708 | if (options.control_path != NULL) |
Damien Miller | b1cbfa2 | 2008-05-19 16:00:08 +1000 | [diff] [blame] | 709 | muxclient(options.control_path); |
Damien Miller | 0e220db | 2004-06-15 10:34:08 +1000 | [diff] [blame] | 710 | |
Damien Miller | 67bd062 | 2007-09-17 12:06:57 +1000 | [diff] [blame] | 711 | timeout_ms = options.connection_timeout * 1000; |
| 712 | |
Kevin Steves | fcec7f8 | 2000-12-15 19:55:48 +0000 | [diff] [blame] | 713 | /* Open a connection to the remote host. */ |
Darren Tucker | 0a4f04b | 2003-07-03 20:37:47 +1000 | [diff] [blame] | 714 | if (ssh_connect(host, &hostaddr, options.port, |
Damien Miller | 67bd062 | 2007-09-17 12:06:57 +1000 | [diff] [blame] | 715 | options.address_family, options.connection_attempts, &timeout_ms, |
| 716 | options.tcp_keep_alive, |
Ben Lindstrom | 1aa6427 | 2002-06-11 20:28:05 +0000 | [diff] [blame] | 717 | #ifdef HAVE_CYGWIN |
| 718 | options.use_privileged_port, |
| 719 | #else |
Ben Lindstrom | f9c4884 | 2002-06-11 16:37:51 +0000 | [diff] [blame] | 720 | original_effective_uid == 0 && options.use_privileged_port, |
Ben Lindstrom | 1aa6427 | 2002-06-11 20:28:05 +0000 | [diff] [blame] | 721 | #endif |
Ben Lindstrom | da394ca | 2002-06-12 16:11:12 +0000 | [diff] [blame] | 722 | options.proxy_command) != 0) |
Darren Tucker | e9a9b71 | 2005-12-20 16:15:51 +1100 | [diff] [blame] | 723 | exit(255); |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 724 | |
Damien Miller | 67bd062 | 2007-09-17 12:06:57 +1000 | [diff] [blame] | 725 | if (timeout_ms > 0) |
| 726 | debug3("timeout: %d ms remain after connect", timeout_ms); |
| 727 | |
Damien Miller | 5428f64 | 1999-11-25 11:54:57 +1100 | [diff] [blame] | 728 | /* |
| 729 | * If we successfully made the connection, load the host private key |
| 730 | * in case we will need it later for combined rsa-rhosts |
| 731 | * authentication. This must be done before releasing extra |
| 732 | * privileges, because the file is only readable by root. |
Ben Lindstrom | 9e5bb57 | 2002-06-06 19:58:27 +0000 | [diff] [blame] | 733 | * If we cannot access the private keys, load the public keys |
| 734 | * instead and try to execute the ssh-keysign helper instead. |
Damien Miller | 5428f64 | 1999-11-25 11:54:57 +1100 | [diff] [blame] | 735 | */ |
Ben Lindstrom | 5eabda3 | 2001-04-12 23:34:34 +0000 | [diff] [blame] | 736 | sensitive_data.nkeys = 0; |
| 737 | sensitive_data.keys = NULL; |
Ben Lindstrom | 1bad256 | 2002-06-06 19:57:33 +0000 | [diff] [blame] | 738 | sensitive_data.external_keysign = 0; |
Ben Lindstrom | 2415757 | 2002-06-12 16:09:39 +0000 | [diff] [blame] | 739 | if (options.rhosts_rsa_authentication || |
| 740 | options.hostbased_authentication) { |
Ben Lindstrom | 5eabda3 | 2001-04-12 23:34:34 +0000 | [diff] [blame] | 741 | sensitive_data.nkeys = 3; |
Damien Miller | ddd63ab | 2006-03-31 23:10:51 +1100 | [diff] [blame] | 742 | sensitive_data.keys = xcalloc(sensitive_data.nkeys, |
Ben Lindstrom | a962c2f | 2002-07-04 00:14:17 +0000 | [diff] [blame] | 743 | sizeof(Key)); |
Ben Lindstrom | f9c4884 | 2002-06-11 16:37:51 +0000 | [diff] [blame] | 744 | |
| 745 | PRIV_START; |
Ben Lindstrom | 5eabda3 | 2001-04-12 23:34:34 +0000 | [diff] [blame] | 746 | sensitive_data.keys[0] = key_load_private_type(KEY_RSA1, |
Darren Tucker | 232b76f | 2006-05-06 17:41:51 +1000 | [diff] [blame] | 747 | _PATH_HOST_KEY_FILE, "", NULL, NULL); |
Ben Lindstrom | 5eabda3 | 2001-04-12 23:34:34 +0000 | [diff] [blame] | 748 | sensitive_data.keys[1] = key_load_private_type(KEY_DSA, |
Darren Tucker | 232b76f | 2006-05-06 17:41:51 +1000 | [diff] [blame] | 749 | _PATH_HOST_DSA_KEY_FILE, "", NULL, NULL); |
Ben Lindstrom | 5eabda3 | 2001-04-12 23:34:34 +0000 | [diff] [blame] | 750 | sensitive_data.keys[2] = key_load_private_type(KEY_RSA, |
Darren Tucker | 232b76f | 2006-05-06 17:41:51 +1000 | [diff] [blame] | 751 | _PATH_HOST_RSA_KEY_FILE, "", NULL, NULL); |
Ben Lindstrom | f9c4884 | 2002-06-11 16:37:51 +0000 | [diff] [blame] | 752 | PRIV_END; |
Ben Lindstrom | 1bad256 | 2002-06-06 19:57:33 +0000 | [diff] [blame] | 753 | |
Ben Lindstrom | 5d35a2f | 2002-07-04 00:19:40 +0000 | [diff] [blame] | 754 | if (options.hostbased_authentication == 1 && |
| 755 | sensitive_data.keys[0] == NULL && |
Ben Lindstrom | 1bad256 | 2002-06-06 19:57:33 +0000 | [diff] [blame] | 756 | sensitive_data.keys[1] == NULL && |
| 757 | sensitive_data.keys[2] == NULL) { |
| 758 | sensitive_data.keys[1] = key_load_public( |
| 759 | _PATH_HOST_DSA_KEY_FILE, NULL); |
| 760 | sensitive_data.keys[2] = key_load_public( |
| 761 | _PATH_HOST_RSA_KEY_FILE, NULL); |
| 762 | sensitive_data.external_keysign = 1; |
| 763 | } |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 764 | } |
Damien Miller | 5428f64 | 1999-11-25 11:54:57 +1100 | [diff] [blame] | 765 | /* |
| 766 | * Get rid of any extra privileges that we may have. We will no |
| 767 | * longer need them. Also, extra privileges could make it very hard |
| 768 | * to read identity files and other non-world-readable files from the |
| 769 | * user's home directory if it happens to be on a NFS volume where |
| 770 | * root is mapped to nobody. |
| 771 | */ |
Darren Tucker | 25f60a7 | 2004-08-15 17:23:34 +1000 | [diff] [blame] | 772 | if (original_effective_uid == 0) { |
| 773 | PRIV_START; |
| 774 | permanently_set_uid(pw); |
| 775 | } |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 776 | |
Damien Miller | 5428f64 | 1999-11-25 11:54:57 +1100 | [diff] [blame] | 777 | /* |
| 778 | * Now that we are back to our own permissions, create ~/.ssh |
Damien Miller | 788f212 | 2005-11-05 15:14:59 +1100 | [diff] [blame] | 779 | * directory if it doesn't already exist. |
Damien Miller | 5428f64 | 1999-11-25 11:54:57 +1100 | [diff] [blame] | 780 | */ |
Darren Tucker | d6173c0 | 2008-06-13 04:52:53 +1000 | [diff] [blame] | 781 | snprintf(buf, sizeof buf, "%.100s%s%.100s", pw->pw_dir, |
| 782 | strcmp(pw->pw_dir, "/") ? "/" : "", _PATH_SSH_USER_DIR); |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 783 | if (stat(buf, &st) < 0) |
Damien Miller | be484b5 | 2000-07-15 14:14:16 +1000 | [diff] [blame] | 784 | if (mkdir(buf, 0700) < 0) |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 785 | error("Could not create directory '%.200s'.", buf); |
| 786 | |
Ben Lindstrom | 266dfdf | 2001-03-09 00:12:22 +0000 | [diff] [blame] | 787 | /* load options.identity_files */ |
| 788 | load_public_identity_files(); |
| 789 | |
| 790 | /* Expand ~ in known host file names. */ |
| 791 | /* XXX mem-leaks: */ |
Damien Miller | 0bc1bd8 | 2000-11-13 22:57:25 +1100 | [diff] [blame] | 792 | options.system_hostfile = |
| 793 | tilde_expand_filename(options.system_hostfile, original_real_uid); |
| 794 | options.user_hostfile = |
| 795 | tilde_expand_filename(options.user_hostfile, original_real_uid); |
| 796 | options.system_hostfile2 = |
| 797 | tilde_expand_filename(options.system_hostfile2, original_real_uid); |
| 798 | options.user_hostfile2 = |
| 799 | tilde_expand_filename(options.user_hostfile2, original_real_uid); |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 800 | |
Damien Miller | 07cd589 | 2001-11-12 10:52:03 +1100 | [diff] [blame] | 801 | signal(SIGPIPE, SIG_IGN); /* ignore SIGPIPE early */ |
| 802 | |
Darren Tucker | d6173c0 | 2008-06-13 04:52:53 +1000 | [diff] [blame] | 803 | /* Log into the remote system. Never returns if the login fails. */ |
Damien Miller | 67bd062 | 2007-09-17 12:06:57 +1000 | [diff] [blame] | 804 | ssh_login(&sensitive_data, host, (struct sockaddr *)&hostaddr, |
| 805 | pw, timeout_ms); |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 806 | |
Ben Lindstrom | 5eabda3 | 2001-04-12 23:34:34 +0000 | [diff] [blame] | 807 | /* We no longer need the private host keys. Clear them now. */ |
| 808 | if (sensitive_data.nkeys != 0) { |
| 809 | for (i = 0; i < sensitive_data.nkeys; i++) { |
| 810 | if (sensitive_data.keys[i] != NULL) { |
| 811 | /* Destroys contents safely */ |
| 812 | debug3("clear hostkey %d", i); |
| 813 | key_free(sensitive_data.keys[i]); |
| 814 | sensitive_data.keys[i] = NULL; |
| 815 | } |
| 816 | } |
| 817 | xfree(sensitive_data.keys); |
| 818 | } |
Ben Lindstrom | a6c8a8d | 2001-08-06 21:42:00 +0000 | [diff] [blame] | 819 | for (i = 0; i < options.num_identity_files; i++) { |
| 820 | if (options.identity_files[i]) { |
| 821 | xfree(options.identity_files[i]); |
| 822 | options.identity_files[i] = NULL; |
| 823 | } |
| 824 | if (options.identity_keys[i]) { |
| 825 | key_free(options.identity_keys[i]); |
| 826 | options.identity_keys[i] = NULL; |
| 827 | } |
| 828 | } |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 829 | |
Damien Miller | 1383bd8 | 2000-04-06 12:32:37 +1000 | [diff] [blame] | 830 | exit_status = compat20 ? ssh_session2() : ssh_session(); |
| 831 | packet_close(); |
Damien Miller | 8c4e18a | 2002-09-19 12:05:02 +1000 | [diff] [blame] | 832 | |
Damien Miller | b1cbfa2 | 2008-05-19 16:00:08 +1000 | [diff] [blame] | 833 | if (options.control_path != NULL && muxserver_sock != -1) |
Damien Miller | 0e220db | 2004-06-15 10:34:08 +1000 | [diff] [blame] | 834 | unlink(options.control_path); |
| 835 | |
Damien Miller | 8c4e18a | 2002-09-19 12:05:02 +1000 | [diff] [blame] | 836 | /* |
Damien Miller | a8e06ce | 2003-11-21 23:48:55 +1100 | [diff] [blame] | 837 | * Send SIGHUP to proxy command if used. We don't wait() in |
Damien Miller | 8c4e18a | 2002-09-19 12:05:02 +1000 | [diff] [blame] | 838 | * case it hangs and instead rely on init to reap the child |
| 839 | */ |
| 840 | if (proxy_command_pid > 1) |
| 841 | kill(proxy_command_pid, SIGHUP); |
| 842 | |
Damien Miller | 1383bd8 | 2000-04-06 12:32:37 +1000 | [diff] [blame] | 843 | return exit_status; |
| 844 | } |
| 845 | |
Darren Tucker | 9f407c4 | 2008-06-13 04:50:27 +1000 | [diff] [blame] | 846 | /* Callback for remote forward global requests */ |
| 847 | static void |
| 848 | ssh_confirm_remote_forward(int type, u_int32_t seq, void *ctxt) |
| 849 | { |
| 850 | Forward *rfwd = (Forward *)ctxt; |
| 851 | |
| 852 | debug("remote forward %s for: listen %d, connect %s:%d", |
| 853 | type == SSH2_MSG_REQUEST_SUCCESS ? "success" : "failure", |
| 854 | rfwd->listen_port, rfwd->connect_host, rfwd->connect_port); |
| 855 | if (type == SSH2_MSG_REQUEST_FAILURE) { |
| 856 | if (options.exit_on_forward_failure) |
| 857 | fatal("Error: remote port forwarding failed for " |
| 858 | "listen port %d", rfwd->listen_port); |
| 859 | else |
| 860 | logit("Warning: remote port forwarding failed for " |
| 861 | "listen port %d", rfwd->listen_port); |
| 862 | } |
Darren Tucker | 9a2a609 | 2008-07-04 12:53:50 +1000 | [diff] [blame] | 863 | if (++remote_forward_confirms_received == options.num_remote_forwards) { |
Darren Tucker | 9f407c4 | 2008-06-13 04:50:27 +1000 | [diff] [blame] | 864 | debug("All remote forwarding requests processed"); |
Darren Tucker | 9a2a609 | 2008-07-04 12:53:50 +1000 | [diff] [blame] | 865 | if (fork_after_authentication_flag) { |
| 866 | fork_after_authentication_flag = 0; |
| 867 | if (daemon(1, 1) < 0) |
| 868 | fatal("daemon() failed: %.200s", |
| 869 | strerror(errno)); |
| 870 | } |
| 871 | } |
Darren Tucker | 9f407c4 | 2008-06-13 04:50:27 +1000 | [diff] [blame] | 872 | } |
| 873 | |
Ben Lindstrom | bba8121 | 2001-06-25 05:01:22 +0000 | [diff] [blame] | 874 | static void |
Damien Miller | 0bc1bd8 | 2000-11-13 22:57:25 +1100 | [diff] [blame] | 875 | ssh_init_forwarding(void) |
| 876 | { |
Kevin Steves | 1205750 | 2001-02-05 14:54:34 +0000 | [diff] [blame] | 877 | int success = 0; |
Damien Miller | 0bc1bd8 | 2000-11-13 22:57:25 +1100 | [diff] [blame] | 878 | int i; |
Kevin Steves | 1205750 | 2001-02-05 14:54:34 +0000 | [diff] [blame] | 879 | |
Damien Miller | 0bc1bd8 | 2000-11-13 22:57:25 +1100 | [diff] [blame] | 880 | /* Initiate local TCP/IP port forwardings. */ |
| 881 | for (i = 0; i < options.num_local_forwards; i++) { |
Damien Miller | f91ee4c | 2005-03-01 21:24:33 +1100 | [diff] [blame] | 882 | debug("Local connections to %.200s:%d forwarded to remote " |
| 883 | "address %.200s:%d", |
Darren Tucker | 47eede7 | 2005-03-14 23:08:12 +1100 | [diff] [blame] | 884 | (options.local_forwards[i].listen_host == NULL) ? |
| 885 | (options.gateway_ports ? "*" : "LOCALHOST") : |
Damien Miller | f91ee4c | 2005-03-01 21:24:33 +1100 | [diff] [blame] | 886 | options.local_forwards[i].listen_host, |
| 887 | options.local_forwards[i].listen_port, |
| 888 | options.local_forwards[i].connect_host, |
| 889 | options.local_forwards[i].connect_port); |
Damien Miller | b16461c | 2002-01-22 23:29:22 +1100 | [diff] [blame] | 890 | success += channel_setup_local_fwd_listener( |
Damien Miller | f91ee4c | 2005-03-01 21:24:33 +1100 | [diff] [blame] | 891 | options.local_forwards[i].listen_host, |
| 892 | options.local_forwards[i].listen_port, |
| 893 | options.local_forwards[i].connect_host, |
| 894 | options.local_forwards[i].connect_port, |
Damien Miller | 0bc1bd8 | 2000-11-13 22:57:25 +1100 | [diff] [blame] | 895 | options.gateway_ports); |
| 896 | } |
Darren Tucker | e7d4b19 | 2006-07-12 22:17:10 +1000 | [diff] [blame] | 897 | if (i > 0 && success != i && options.exit_on_forward_failure) |
| 898 | fatal("Could not request local forwarding."); |
Kevin Steves | 1205750 | 2001-02-05 14:54:34 +0000 | [diff] [blame] | 899 | if (i > 0 && success == 0) |
| 900 | error("Could not request local forwarding."); |
Damien Miller | 0bc1bd8 | 2000-11-13 22:57:25 +1100 | [diff] [blame] | 901 | |
| 902 | /* Initiate remote TCP/IP port forwardings. */ |
| 903 | for (i = 0; i < options.num_remote_forwards; i++) { |
Damien Miller | f91ee4c | 2005-03-01 21:24:33 +1100 | [diff] [blame] | 904 | debug("Remote connections from %.200s:%d forwarded to " |
| 905 | "local address %.200s:%d", |
Damien Miller | 46d38de | 2005-07-17 17:02:09 +1000 | [diff] [blame] | 906 | (options.remote_forwards[i].listen_host == NULL) ? |
Damien Miller | aa3bb10 | 2005-11-05 15:12:59 +1100 | [diff] [blame] | 907 | "LOCALHOST" : options.remote_forwards[i].listen_host, |
Damien Miller | f91ee4c | 2005-03-01 21:24:33 +1100 | [diff] [blame] | 908 | options.remote_forwards[i].listen_port, |
| 909 | options.remote_forwards[i].connect_host, |
| 910 | options.remote_forwards[i].connect_port); |
Darren Tucker | e7d4b19 | 2006-07-12 22:17:10 +1000 | [diff] [blame] | 911 | if (channel_request_remote_forwarding( |
Damien Miller | f91ee4c | 2005-03-01 21:24:33 +1100 | [diff] [blame] | 912 | options.remote_forwards[i].listen_host, |
| 913 | options.remote_forwards[i].listen_port, |
| 914 | options.remote_forwards[i].connect_host, |
Darren Tucker | e7d4b19 | 2006-07-12 22:17:10 +1000 | [diff] [blame] | 915 | options.remote_forwards[i].connect_port) < 0) { |
| 916 | if (options.exit_on_forward_failure) |
| 917 | fatal("Could not request remote forwarding."); |
| 918 | else |
| 919 | logit("Warning: Could not request remote " |
| 920 | "forwarding."); |
| 921 | } |
Darren Tucker | 9f407c4 | 2008-06-13 04:50:27 +1000 | [diff] [blame] | 922 | client_register_global_confirm(ssh_confirm_remote_forward, |
| 923 | &options.remote_forwards[i]); |
Damien Miller | 0bc1bd8 | 2000-11-13 22:57:25 +1100 | [diff] [blame] | 924 | } |
Damien Miller | b3ce9fe | 2007-08-08 14:32:41 +1000 | [diff] [blame] | 925 | |
| 926 | /* Initiate tunnel forwarding. */ |
| 927 | if (options.tun_open != SSH_TUNMODE_NO) { |
| 928 | if (client_request_tun_fwd(options.tun_open, |
| 929 | options.tun_local, options.tun_remote) == -1) { |
| 930 | if (options.exit_on_forward_failure) |
| 931 | fatal("Could not request tunnel forwarding."); |
| 932 | else |
| 933 | error("Could not request tunnel forwarding."); |
| 934 | } |
| 935 | } |
Damien Miller | 0bc1bd8 | 2000-11-13 22:57:25 +1100 | [diff] [blame] | 936 | } |
| 937 | |
Ben Lindstrom | bba8121 | 2001-06-25 05:01:22 +0000 | [diff] [blame] | 938 | static void |
Damien Miller | 0bc1bd8 | 2000-11-13 22:57:25 +1100 | [diff] [blame] | 939 | check_agent_present(void) |
| 940 | { |
| 941 | if (options.forward_agent) { |
Damien Miller | 788f212 | 2005-11-05 15:14:59 +1100 | [diff] [blame] | 942 | /* Clear agent forwarding if we don't have an agent. */ |
Damien Miller | 789e95d | 2002-09-12 09:52:46 +1000 | [diff] [blame] | 943 | if (!ssh_agent_present()) |
Damien Miller | 0bc1bd8 | 2000-11-13 22:57:25 +1100 | [diff] [blame] | 944 | options.forward_agent = 0; |
Damien Miller | 0bc1bd8 | 2000-11-13 22:57:25 +1100 | [diff] [blame] | 945 | } |
| 946 | } |
| 947 | |
Ben Lindstrom | bba8121 | 2001-06-25 05:01:22 +0000 | [diff] [blame] | 948 | static int |
Damien Miller | 1383bd8 | 2000-04-06 12:32:37 +1000 | [diff] [blame] | 949 | ssh_session(void) |
| 950 | { |
| 951 | int type; |
Damien Miller | 1383bd8 | 2000-04-06 12:32:37 +1000 | [diff] [blame] | 952 | int interactive = 0; |
| 953 | int have_tty = 0; |
| 954 | struct winsize ws; |
Damien Miller | 1383bd8 | 2000-04-06 12:32:37 +1000 | [diff] [blame] | 955 | char *cp; |
Damien Miller | 17e7ed0 | 2005-06-17 12:54:33 +1000 | [diff] [blame] | 956 | const char *display; |
Damien Miller | 1383bd8 | 2000-04-06 12:32:37 +1000 | [diff] [blame] | 957 | |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 958 | /* Enable compression if requested. */ |
| 959 | if (options.compression) { |
Darren Tucker | d6173c0 | 2008-06-13 04:52:53 +1000 | [diff] [blame] | 960 | debug("Requesting compression at level %d.", |
| 961 | options.compression_level); |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 962 | |
Darren Tucker | d6173c0 | 2008-06-13 04:52:53 +1000 | [diff] [blame] | 963 | if (options.compression_level < 1 || |
| 964 | options.compression_level > 9) |
| 965 | fatal("Compression level must be from 1 (fast) to " |
| 966 | "9 (slow, best)."); |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 967 | |
| 968 | /* Send the request. */ |
| 969 | packet_start(SSH_CMSG_REQUEST_COMPRESSION); |
| 970 | packet_put_int(options.compression_level); |
| 971 | packet_send(); |
| 972 | packet_write_wait(); |
Damien Miller | dff5099 | 2002-01-22 23:16:32 +1100 | [diff] [blame] | 973 | type = packet_read(); |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 974 | if (type == SSH_SMSG_SUCCESS) |
| 975 | packet_start_compression(options.compression_level); |
| 976 | else if (type == SSH_SMSG_FAILURE) |
Damien Miller | 996acd2 | 2003-04-09 20:59:48 +1000 | [diff] [blame] | 977 | logit("Warning: Remote host refused compression."); |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 978 | else |
Darren Tucker | d6173c0 | 2008-06-13 04:52:53 +1000 | [diff] [blame] | 979 | packet_disconnect("Protocol error waiting for " |
| 980 | "compression response."); |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 981 | } |
| 982 | /* Allocate a pseudo tty if appropriate. */ |
| 983 | if (tty_flag) { |
| 984 | debug("Requesting pty."); |
| 985 | |
| 986 | /* Start the packet. */ |
| 987 | packet_start(SSH_CMSG_REQUEST_PTY); |
| 988 | |
| 989 | /* Store TERM in the packet. There is no limit on the |
| 990 | length of the string. */ |
| 991 | cp = getenv("TERM"); |
| 992 | if (!cp) |
| 993 | cp = ""; |
Ben Lindstrom | 664408d | 2001-06-09 01:42:01 +0000 | [diff] [blame] | 994 | packet_put_cstring(cp); |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 995 | |
| 996 | /* Store window size in the packet. */ |
| 997 | if (ioctl(fileno(stdin), TIOCGWINSZ, &ws) < 0) |
| 998 | memset(&ws, 0, sizeof(ws)); |
Damien Miller | 71a7367 | 2006-03-26 14:04:36 +1100 | [diff] [blame] | 999 | packet_put_int((u_int)ws.ws_row); |
| 1000 | packet_put_int((u_int)ws.ws_col); |
| 1001 | packet_put_int((u_int)ws.ws_xpixel); |
| 1002 | packet_put_int((u_int)ws.ws_ypixel); |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 1003 | |
| 1004 | /* Store tty modes in the packet. */ |
Ben Lindstrom | ae8e2d3 | 2001-04-14 23:13:02 +0000 | [diff] [blame] | 1005 | tty_make_modes(fileno(stdin), NULL); |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 1006 | |
| 1007 | /* Send the packet, and wait for it to leave. */ |
| 1008 | packet_send(); |
| 1009 | packet_write_wait(); |
| 1010 | |
| 1011 | /* Read response from the server. */ |
Damien Miller | dff5099 | 2002-01-22 23:16:32 +1100 | [diff] [blame] | 1012 | type = packet_read(); |
Damien Miller | 450a7a1 | 2000-03-26 13:04:51 +1000 | [diff] [blame] | 1013 | if (type == SSH_SMSG_SUCCESS) { |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 1014 | interactive = 1; |
Damien Miller | 1383bd8 | 2000-04-06 12:32:37 +1000 | [diff] [blame] | 1015 | have_tty = 1; |
Damien Miller | 450a7a1 | 2000-03-26 13:04:51 +1000 | [diff] [blame] | 1016 | } else if (type == SSH_SMSG_FAILURE) |
Darren Tucker | d6173c0 | 2008-06-13 04:52:53 +1000 | [diff] [blame] | 1017 | logit("Warning: Remote host failed or refused to " |
| 1018 | "allocate a pseudo tty."); |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 1019 | else |
Darren Tucker | d6173c0 | 2008-06-13 04:52:53 +1000 | [diff] [blame] | 1020 | packet_disconnect("Protocol error waiting for pty " |
| 1021 | "request response."); |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 1022 | } |
| 1023 | /* Request X11 forwarding if enabled and DISPLAY is set. */ |
Damien Miller | 17e7ed0 | 2005-06-17 12:54:33 +1000 | [diff] [blame] | 1024 | display = getenv("DISPLAY"); |
| 1025 | if (options.forward_x11 && display != NULL) { |
Ben Lindstrom | 4a4bd71 | 2001-12-06 17:45:19 +0000 | [diff] [blame] | 1026 | char *proto, *data; |
Damien Miller | bd483e7 | 2000-04-30 10:00:53 +1000 | [diff] [blame] | 1027 | /* Get reasonable local authentication information. */ |
Damien Miller | 17e7ed0 | 2005-06-17 12:54:33 +1000 | [diff] [blame] | 1028 | client_x11_get_proto(display, options.xauth_location, |
| 1029 | options.forward_x11_trusted, &proto, &data); |
Damien Miller | bd483e7 | 2000-04-30 10:00:53 +1000 | [diff] [blame] | 1030 | /* Request forwarding with authentication spoofing. */ |
Darren Tucker | d6173c0 | 2008-06-13 04:52:53 +1000 | [diff] [blame] | 1031 | debug("Requesting X11 forwarding with authentication " |
| 1032 | "spoofing."); |
Damien Miller | 17e7ed0 | 2005-06-17 12:54:33 +1000 | [diff] [blame] | 1033 | x11_request_forwarding_with_spoofing(0, display, proto, data); |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 1034 | |
| 1035 | /* Read response from the server. */ |
Damien Miller | dff5099 | 2002-01-22 23:16:32 +1100 | [diff] [blame] | 1036 | type = packet_read(); |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 1037 | if (type == SSH_SMSG_SUCCESS) { |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 1038 | interactive = 1; |
Damien Miller | bd483e7 | 2000-04-30 10:00:53 +1000 | [diff] [blame] | 1039 | } else if (type == SSH_SMSG_FAILURE) { |
Damien Miller | 996acd2 | 2003-04-09 20:59:48 +1000 | [diff] [blame] | 1040 | logit("Warning: Remote host denied X11 forwarding."); |
Damien Miller | bd483e7 | 2000-04-30 10:00:53 +1000 | [diff] [blame] | 1041 | } else { |
Darren Tucker | d6173c0 | 2008-06-13 04:52:53 +1000 | [diff] [blame] | 1042 | packet_disconnect("Protocol error waiting for X11 " |
| 1043 | "forwarding"); |
Damien Miller | bd483e7 | 2000-04-30 10:00:53 +1000 | [diff] [blame] | 1044 | } |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 1045 | } |
| 1046 | /* Tell the packet module whether this is an interactive session. */ |
Ben Lindstrom | bf555ba | 2001-01-18 02:04:35 +0000 | [diff] [blame] | 1047 | packet_set_interactive(interactive); |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 1048 | |
| 1049 | /* Request authentication agent forwarding if appropriate. */ |
Damien Miller | 0bc1bd8 | 2000-11-13 22:57:25 +1100 | [diff] [blame] | 1050 | check_agent_present(); |
| 1051 | |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 1052 | if (options.forward_agent) { |
| 1053 | debug("Requesting authentication agent forwarding."); |
| 1054 | auth_request_forwarding(); |
| 1055 | |
| 1056 | /* Read response from the server. */ |
Damien Miller | dff5099 | 2002-01-22 23:16:32 +1100 | [diff] [blame] | 1057 | type = packet_read(); |
Damien Miller | 48b03fc | 2002-01-22 23:11:40 +1100 | [diff] [blame] | 1058 | packet_check_eom(); |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 1059 | if (type != SSH_SMSG_SUCCESS) |
Damien Miller | 996acd2 | 2003-04-09 20:59:48 +1000 | [diff] [blame] | 1060 | logit("Warning: Remote host denied authentication agent forwarding."); |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 1061 | } |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 1062 | |
Damien Miller | 0bc1bd8 | 2000-11-13 22:57:25 +1100 | [diff] [blame] | 1063 | /* Initiate port forwardings. */ |
| 1064 | ssh_init_forwarding(); |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 1065 | |
Darren Tucker | b776c85 | 2007-12-02 23:06:35 +1100 | [diff] [blame] | 1066 | /* Execute a local command */ |
| 1067 | if (options.local_command != NULL && |
| 1068 | options.permit_local_command) |
| 1069 | ssh_local_cmd(options.local_command); |
| 1070 | |
Darren Tucker | 9a2a609 | 2008-07-04 12:53:50 +1000 | [diff] [blame] | 1071 | /* |
| 1072 | * If requested and we are not interested in replies to remote |
| 1073 | * forwarding requests, then let ssh continue in the background. |
| 1074 | */ |
| 1075 | if (fork_after_authentication_flag && |
| 1076 | (!options.exit_on_forward_failure || |
| 1077 | options.num_remote_forwards == 0)) { |
| 1078 | fork_after_authentication_flag = 0; |
Damien Miller | 5428f64 | 1999-11-25 11:54:57 +1100 | [diff] [blame] | 1079 | if (daemon(1, 1) < 0) |
| 1080 | fatal("daemon() failed: %.200s", strerror(errno)); |
Darren Tucker | 9a2a609 | 2008-07-04 12:53:50 +1000 | [diff] [blame] | 1081 | } |
Damien Miller | 5428f64 | 1999-11-25 11:54:57 +1100 | [diff] [blame] | 1082 | |
| 1083 | /* |
| 1084 | * If a command was specified on the command line, execute the |
| 1085 | * command now. Otherwise request the server to start a shell. |
| 1086 | */ |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 1087 | if (buffer_len(&command) > 0) { |
| 1088 | int len = buffer_len(&command); |
| 1089 | if (len > 900) |
| 1090 | len = 900; |
Darren Tucker | d6173c0 | 2008-06-13 04:52:53 +1000 | [diff] [blame] | 1091 | debug("Sending command: %.*s", len, |
| 1092 | (u_char *)buffer_ptr(&command)); |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 1093 | packet_start(SSH_CMSG_EXEC_CMD); |
| 1094 | packet_put_string(buffer_ptr(&command), buffer_len(&command)); |
| 1095 | packet_send(); |
| 1096 | packet_write_wait(); |
| 1097 | } else { |
| 1098 | debug("Requesting shell."); |
| 1099 | packet_start(SSH_CMSG_EXEC_SHELL); |
| 1100 | packet_send(); |
| 1101 | packet_write_wait(); |
| 1102 | } |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 1103 | |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 1104 | /* Enter the interactive session. */ |
Ben Lindstrom | 2b1f71b | 2001-06-05 20:32:21 +0000 | [diff] [blame] | 1105 | return client_loop(have_tty, tty_flag ? |
| 1106 | options.escape_char : SSH_ESCAPECHAR_NONE, 0); |
Damien Miller | 1383bd8 | 2000-04-06 12:32:37 +1000 | [diff] [blame] | 1107 | } |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 1108 | |
Ben Lindstrom | f558cf6 | 2001-09-20 23:13:49 +0000 | [diff] [blame] | 1109 | /* request pty/x11/agent/tcpfwd/shell for channel */ |
Ben Lindstrom | bba8121 | 2001-06-25 05:01:22 +0000 | [diff] [blame] | 1110 | static void |
Ben Lindstrom | f558cf6 | 2001-09-20 23:13:49 +0000 | [diff] [blame] | 1111 | ssh_session2_setup(int id, void *arg) |
Damien Miller | 1383bd8 | 2000-04-06 12:32:37 +1000 | [diff] [blame] | 1112 | { |
Damien Miller | 3756dce | 2004-06-18 01:17:29 +1000 | [diff] [blame] | 1113 | extern char **environ; |
Damien Miller | 17e7ed0 | 2005-06-17 12:54:33 +1000 | [diff] [blame] | 1114 | const char *display; |
Damien Miller | 0e220db | 2004-06-15 10:34:08 +1000 | [diff] [blame] | 1115 | int interactive = tty_flag; |
Damien Miller | 17e7ed0 | 2005-06-17 12:54:33 +1000 | [diff] [blame] | 1116 | |
Damien Miller | 46d38de | 2005-07-17 17:02:09 +1000 | [diff] [blame] | 1117 | display = getenv("DISPLAY"); |
Damien Miller | 17e7ed0 | 2005-06-17 12:54:33 +1000 | [diff] [blame] | 1118 | if (options.forward_x11 && display != NULL) { |
Ben Lindstrom | 4a4bd71 | 2001-12-06 17:45:19 +0000 | [diff] [blame] | 1119 | char *proto, *data; |
Damien Miller | bd483e7 | 2000-04-30 10:00:53 +1000 | [diff] [blame] | 1120 | /* Get reasonable local authentication information. */ |
Damien Miller | 17e7ed0 | 2005-06-17 12:54:33 +1000 | [diff] [blame] | 1121 | client_x11_get_proto(display, options.xauth_location, |
| 1122 | options.forward_x11_trusted, &proto, &data); |
Damien Miller | bd483e7 | 2000-04-30 10:00:53 +1000 | [diff] [blame] | 1123 | /* Request forwarding with authentication spoofing. */ |
Darren Tucker | d6173c0 | 2008-06-13 04:52:53 +1000 | [diff] [blame] | 1124 | debug("Requesting X11 forwarding with authentication " |
| 1125 | "spoofing."); |
Damien Miller | 17e7ed0 | 2005-06-17 12:54:33 +1000 | [diff] [blame] | 1126 | x11_request_forwarding_with_spoofing(id, display, proto, data); |
Ben Lindstrom | bf555ba | 2001-01-18 02:04:35 +0000 | [diff] [blame] | 1127 | interactive = 1; |
Damien Miller | bd483e7 | 2000-04-30 10:00:53 +1000 | [diff] [blame] | 1128 | /* XXX wait for reply */ |
| 1129 | } |
| 1130 | |
Damien Miller | 0bc1bd8 | 2000-11-13 22:57:25 +1100 | [diff] [blame] | 1131 | check_agent_present(); |
| 1132 | if (options.forward_agent) { |
| 1133 | debug("Requesting authentication agent forwarding."); |
| 1134 | channel_request_start(id, "auth-agent-req@openssh.com", 0); |
| 1135 | packet_send(); |
| 1136 | } |
| 1137 | |
Damien Miller | 0e220db | 2004-06-15 10:34:08 +1000 | [diff] [blame] | 1138 | client_session2_setup(id, tty_flag, subsystem_flag, getenv("TERM"), |
Damien Miller | 5771ed7 | 2008-05-19 15:35:33 +1000 | [diff] [blame] | 1139 | NULL, fileno(stdin), &command, environ); |
Ben Lindstrom | 1e7d306 | 2001-02-09 02:36:43 +0000 | [diff] [blame] | 1140 | |
Ben Lindstrom | bf555ba | 2001-01-18 02:04:35 +0000 | [diff] [blame] | 1141 | packet_set_interactive(interactive); |
Damien Miller | 1383bd8 | 2000-04-06 12:32:37 +1000 | [diff] [blame] | 1142 | } |
| 1143 | |
Ben Lindstrom | f558cf6 | 2001-09-20 23:13:49 +0000 | [diff] [blame] | 1144 | /* open new channel for a session */ |
Ben Lindstrom | bba8121 | 2001-06-25 05:01:22 +0000 | [diff] [blame] | 1145 | static int |
Ben Lindstrom | f558cf6 | 2001-09-20 23:13:49 +0000 | [diff] [blame] | 1146 | ssh_session2_open(void) |
Damien Miller | 1383bd8 | 2000-04-06 12:32:37 +1000 | [diff] [blame] | 1147 | { |
Ben Lindstrom | 99c73b3 | 2001-05-05 04:09:47 +0000 | [diff] [blame] | 1148 | Channel *c; |
| 1149 | int window, packetmax, in, out, err; |
Damien Miller | ad833b3 | 2000-08-23 10:46:23 +1000 | [diff] [blame] | 1150 | |
Damien Miller | caf6dd6 | 2000-08-29 11:33:50 +1100 | [diff] [blame] | 1151 | if (stdin_null_flag) { |
Ben Lindstrom | 31ca54a | 2001-02-09 02:11:24 +0000 | [diff] [blame] | 1152 | in = open(_PATH_DEVNULL, O_RDONLY); |
Damien Miller | caf6dd6 | 2000-08-29 11:33:50 +1100 | [diff] [blame] | 1153 | } else { |
| 1154 | in = dup(STDIN_FILENO); |
| 1155 | } |
| 1156 | out = dup(STDOUT_FILENO); |
| 1157 | err = dup(STDERR_FILENO); |
| 1158 | |
| 1159 | if (in < 0 || out < 0 || err < 0) |
| 1160 | fatal("dup() in/out/err failed"); |
| 1161 | |
Damien Miller | 69b69aa | 2000-10-28 14:19:58 +1100 | [diff] [blame] | 1162 | /* enable nonblocking unless tty */ |
| 1163 | if (!isatty(in)) |
| 1164 | set_nonblock(in); |
| 1165 | if (!isatty(out)) |
| 1166 | set_nonblock(out); |
| 1167 | if (!isatty(err)) |
| 1168 | set_nonblock(err); |
| 1169 | |
Damien Miller | e4340be | 2000-09-16 13:29:08 +1100 | [diff] [blame] | 1170 | window = CHAN_SES_WINDOW_DEFAULT; |
| 1171 | packetmax = CHAN_SES_PACKET_DEFAULT; |
Damien Miller | 19a5945 | 2002-02-19 15:20:57 +1100 | [diff] [blame] | 1172 | if (tty_flag) { |
| 1173 | window >>= 1; |
| 1174 | packetmax >>= 1; |
Damien Miller | 1383bd8 | 2000-04-06 12:32:37 +1000 | [diff] [blame] | 1175 | } |
Ben Lindstrom | 99c73b3 | 2001-05-05 04:09:47 +0000 | [diff] [blame] | 1176 | c = channel_new( |
Damien Miller | 1383bd8 | 2000-04-06 12:32:37 +1000 | [diff] [blame] | 1177 | "session", SSH_CHANNEL_OPENING, in, out, err, |
Damien Miller | e4340be | 2000-09-16 13:29:08 +1100 | [diff] [blame] | 1178 | window, packetmax, CHAN_EXTENDED_WRITE, |
Damien Miller | b1ca8bb | 2003-05-14 13:45:42 +1000 | [diff] [blame] | 1179 | "client-session", /*nonblock*/0); |
Damien Miller | 1383bd8 | 2000-04-06 12:32:37 +1000 | [diff] [blame] | 1180 | |
Ben Lindstrom | f558cf6 | 2001-09-20 23:13:49 +0000 | [diff] [blame] | 1181 | debug3("ssh_session2_open: channel_new: %d", c->self); |
Ben Lindstrom | 4c3f77d | 2001-04-05 23:37:36 +0000 | [diff] [blame] | 1182 | |
Ben Lindstrom | 5ec2645 | 2001-06-09 00:18:51 +0000 | [diff] [blame] | 1183 | channel_send_open(c->self); |
Ben Lindstrom | f558cf6 | 2001-09-20 23:13:49 +0000 | [diff] [blame] | 1184 | if (!no_shell_flag) |
Damien Miller | b84886b | 2008-05-19 15:05:07 +1000 | [diff] [blame] | 1185 | channel_register_open_confirm(c->self, |
| 1186 | ssh_session2_setup, NULL); |
Damien Miller | 1383bd8 | 2000-04-06 12:32:37 +1000 | [diff] [blame] | 1187 | |
Ben Lindstrom | 99c73b3 | 2001-05-05 04:09:47 +0000 | [diff] [blame] | 1188 | return c->self; |
Ben Lindstrom | 4c3f77d | 2001-04-05 23:37:36 +0000 | [diff] [blame] | 1189 | } |
| 1190 | |
Ben Lindstrom | bba8121 | 2001-06-25 05:01:22 +0000 | [diff] [blame] | 1191 | static int |
Ben Lindstrom | 4c3f77d | 2001-04-05 23:37:36 +0000 | [diff] [blame] | 1192 | ssh_session2(void) |
| 1193 | { |
Ben Lindstrom | f558cf6 | 2001-09-20 23:13:49 +0000 | [diff] [blame] | 1194 | int id = -1; |
Ben Lindstrom | 4c3f77d | 2001-04-05 23:37:36 +0000 | [diff] [blame] | 1195 | |
| 1196 | /* XXX should be pre-session */ |
| 1197 | ssh_init_forwarding(); |
| 1198 | |
Ben Lindstrom | f558cf6 | 2001-09-20 23:13:49 +0000 | [diff] [blame] | 1199 | if (!no_shell_flag || (datafellows & SSH_BUG_DUMMYCHAN)) |
| 1200 | id = ssh_session2_open(); |
Ben Lindstrom | 4c3f77d | 2001-04-05 23:37:36 +0000 | [diff] [blame] | 1201 | |
Darren Tucker | 8901fa9 | 2008-06-11 09:34:01 +1000 | [diff] [blame] | 1202 | /* If we don't expect to open a new session, then disallow it */ |
| 1203 | if (options.control_master == SSHCTL_MASTER_NO) { |
| 1204 | debug("Requesting no-more-sessions@openssh.com"); |
| 1205 | packet_start(SSH2_MSG_GLOBAL_REQUEST); |
| 1206 | packet_put_cstring("no-more-sessions@openssh.com"); |
| 1207 | packet_put_char(0); |
| 1208 | packet_send(); |
| 1209 | } |
| 1210 | |
Damien Miller | d27b947 | 2005-12-13 19:29:02 +1100 | [diff] [blame] | 1211 | /* Execute a local command */ |
| 1212 | if (options.local_command != NULL && |
| 1213 | options.permit_local_command) |
| 1214 | ssh_local_cmd(options.local_command); |
| 1215 | |
Damien Miller | b3ce9fe | 2007-08-08 14:32:41 +1000 | [diff] [blame] | 1216 | /* Start listening for multiplex clients */ |
Damien Miller | b1cbfa2 | 2008-05-19 16:00:08 +1000 | [diff] [blame] | 1217 | muxserver_listen(); |
Damien Miller | b3ce9fe | 2007-08-08 14:32:41 +1000 | [diff] [blame] | 1218 | |
Ben Lindstrom | 4c3f77d | 2001-04-05 23:37:36 +0000 | [diff] [blame] | 1219 | /* If requested, let ssh continue in the background. */ |
Darren Tucker | 9a2a609 | 2008-07-04 12:53:50 +1000 | [diff] [blame] | 1220 | if (fork_after_authentication_flag) { |
| 1221 | fork_after_authentication_flag = 0; |
Ben Lindstrom | 4c3f77d | 2001-04-05 23:37:36 +0000 | [diff] [blame] | 1222 | if (daemon(1, 1) < 0) |
| 1223 | fatal("daemon() failed: %.200s", strerror(errno)); |
Darren Tucker | 9a2a609 | 2008-07-04 12:53:50 +1000 | [diff] [blame] | 1224 | } |
Ben Lindstrom | 4c3f77d | 2001-04-05 23:37:36 +0000 | [diff] [blame] | 1225 | |
Ben Lindstrom | 2b1f71b | 2001-06-05 20:32:21 +0000 | [diff] [blame] | 1226 | return client_loop(tty_flag, tty_flag ? |
| 1227 | options.escape_char : SSH_ESCAPECHAR_NONE, id); |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 1228 | } |
Damien Miller | 0bc1bd8 | 2000-11-13 22:57:25 +1100 | [diff] [blame] | 1229 | |
Ben Lindstrom | bba8121 | 2001-06-25 05:01:22 +0000 | [diff] [blame] | 1230 | static void |
Ben Lindstrom | 266dfdf | 2001-03-09 00:12:22 +0000 | [diff] [blame] | 1231 | load_public_identity_files(void) |
| 1232 | { |
Damien Miller | 6b1d53c | 2006-03-31 23:13:21 +1100 | [diff] [blame] | 1233 | char *filename, *cp, thishost[NI_MAXHOST]; |
Darren Tucker | b4fbbc6 | 2007-12-02 23:16:32 +1100 | [diff] [blame] | 1234 | char *pwdir = NULL, *pwname = NULL; |
Ben Lindstrom | 711b04a | 2001-08-06 21:12:42 +0000 | [diff] [blame] | 1235 | int i = 0; |
Ben Lindstrom | 0936a5b | 2002-03-26 03:17:42 +0000 | [diff] [blame] | 1236 | Key *public; |
Damien Miller | 6b1d53c | 2006-03-31 23:13:21 +1100 | [diff] [blame] | 1237 | struct passwd *pw; |
Ben Lindstrom | 711b04a | 2001-08-06 21:12:42 +0000 | [diff] [blame] | 1238 | #ifdef SMARTCARD |
Ben Lindstrom | 0936a5b | 2002-03-26 03:17:42 +0000 | [diff] [blame] | 1239 | Key **keys; |
| 1240 | |
Ben Lindstrom | f7db3bb | 2001-08-06 21:35:51 +0000 | [diff] [blame] | 1241 | if (options.smartcard_device != NULL && |
Ben Lindstrom | 0936a5b | 2002-03-26 03:17:42 +0000 | [diff] [blame] | 1242 | options.num_identity_files < SSH_MAX_IDENTITY_FILES && |
Damien Miller | 4dec5d7 | 2006-08-05 11:38:40 +1000 | [diff] [blame] | 1243 | (keys = sc_get_keys(options.smartcard_device, NULL)) != NULL) { |
Ben Lindstrom | 0936a5b | 2002-03-26 03:17:42 +0000 | [diff] [blame] | 1244 | int count = 0; |
| 1245 | for (i = 0; keys[i] != NULL; i++) { |
| 1246 | count++; |
Darren Tucker | d6173c0 | 2008-06-13 04:52:53 +1000 | [diff] [blame] | 1247 | memmove(&options.identity_files[1], |
| 1248 | &options.identity_files[0], |
Ben Lindstrom | 0936a5b | 2002-03-26 03:17:42 +0000 | [diff] [blame] | 1249 | sizeof(char *) * (SSH_MAX_IDENTITY_FILES - 1)); |
Darren Tucker | d6173c0 | 2008-06-13 04:52:53 +1000 | [diff] [blame] | 1250 | memmove(&options.identity_keys[1], |
| 1251 | &options.identity_keys[0], |
Ben Lindstrom | 0936a5b | 2002-03-26 03:17:42 +0000 | [diff] [blame] | 1252 | sizeof(Key *) * (SSH_MAX_IDENTITY_FILES - 1)); |
| 1253 | options.num_identity_files++; |
| 1254 | options.identity_keys[0] = keys[i]; |
Damien Miller | 56a0bb0 | 2003-06-18 20:28:40 +1000 | [diff] [blame] | 1255 | options.identity_files[0] = sc_get_key_label(keys[i]); |
Ben Lindstrom | 0936a5b | 2002-03-26 03:17:42 +0000 | [diff] [blame] | 1256 | } |
Ben Lindstrom | 4f05460 | 2002-03-26 03:23:00 +0000 | [diff] [blame] | 1257 | if (options.num_identity_files > SSH_MAX_IDENTITY_FILES) |
| 1258 | options.num_identity_files = SSH_MAX_IDENTITY_FILES; |
Ben Lindstrom | 0936a5b | 2002-03-26 03:17:42 +0000 | [diff] [blame] | 1259 | i = count; |
| 1260 | xfree(keys); |
Ben Lindstrom | 711b04a | 2001-08-06 21:12:42 +0000 | [diff] [blame] | 1261 | } |
Ben Lindstrom | ffce147 | 2001-08-06 21:57:31 +0000 | [diff] [blame] | 1262 | #endif /* SMARTCARD */ |
Damien Miller | 6b1d53c | 2006-03-31 23:13:21 +1100 | [diff] [blame] | 1263 | if ((pw = getpwuid(original_real_uid)) == NULL) |
| 1264 | fatal("load_public_identity_files: getpwuid failed"); |
Darren Tucker | e143f06 | 2007-12-02 23:21:16 +1100 | [diff] [blame] | 1265 | pwname = xstrdup(pw->pw_name); |
| 1266 | pwdir = xstrdup(pw->pw_dir); |
Damien Miller | 6b1d53c | 2006-03-31 23:13:21 +1100 | [diff] [blame] | 1267 | if (gethostname(thishost, sizeof(thishost)) == -1) |
| 1268 | fatal("load_public_identity_files: gethostname: %s", |
| 1269 | strerror(errno)); |
Ben Lindstrom | 711b04a | 2001-08-06 21:12:42 +0000 | [diff] [blame] | 1270 | for (; i < options.num_identity_files; i++) { |
Damien Miller | 6b1d53c | 2006-03-31 23:13:21 +1100 | [diff] [blame] | 1271 | cp = tilde_expand_filename(options.identity_files[i], |
Ben Lindstrom | 266dfdf | 2001-03-09 00:12:22 +0000 | [diff] [blame] | 1272 | original_real_uid); |
Darren Tucker | b4fbbc6 | 2007-12-02 23:16:32 +1100 | [diff] [blame] | 1273 | filename = percent_expand(cp, "d", pwdir, |
| 1274 | "u", pwname, "l", thishost, "h", host, |
Damien Miller | 6b1d53c | 2006-03-31 23:13:21 +1100 | [diff] [blame] | 1275 | "r", options.user, (char *)NULL); |
| 1276 | xfree(cp); |
Ben Lindstrom | d0fca42 | 2001-03-26 13:44:06 +0000 | [diff] [blame] | 1277 | public = key_load_public(filename, NULL); |
Ben Lindstrom | 266dfdf | 2001-03-09 00:12:22 +0000 | [diff] [blame] | 1278 | debug("identity file %s type %d", filename, |
| 1279 | public ? public->type : -1); |
| 1280 | xfree(options.identity_files[i]); |
| 1281 | options.identity_files[i] = filename; |
| 1282 | options.identity_keys[i] = public; |
| 1283 | } |
Darren Tucker | b4fbbc6 | 2007-12-02 23:16:32 +1100 | [diff] [blame] | 1284 | bzero(pwname, strlen(pwname)); |
Darren Tucker | e143f06 | 2007-12-02 23:21:16 +1100 | [diff] [blame] | 1285 | xfree(pwname); |
Darren Tucker | b4fbbc6 | 2007-12-02 23:16:32 +1100 | [diff] [blame] | 1286 | bzero(pwdir, strlen(pwdir)); |
Darren Tucker | e143f06 | 2007-12-02 23:21:16 +1100 | [diff] [blame] | 1287 | xfree(pwdir); |
Ben Lindstrom | 266dfdf | 2001-03-09 00:12:22 +0000 | [diff] [blame] | 1288 | } |