Damien Miller | 54e3773 | 2008-02-10 22:48:55 +1100 | [diff] [blame^] | 1 | /* $OpenBSD: servconf.c,v 1.177 2008/02/10 10:54:28 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 | * Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland |
| 4 | * All rights reserved |
Damien Miller | 4af5130 | 2000-04-16 11:18:38 +1000 | [diff] [blame] | 5 | * |
Damien Miller | e4340be | 2000-09-16 13:29:08 +1100 | [diff] [blame] | 6 | * As far as I am concerned, the code I have written for this software |
| 7 | * can be used freely for any purpose. Any derived versions of this |
| 8 | * software must be clearly marked as such, and if the derived work is |
| 9 | * incompatible with the protocol description in the RFC file, it must be |
| 10 | * called by a name other than "ssh" or "Secure Shell". |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 11 | */ |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 12 | |
| 13 | #include "includes.h" |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 14 | |
Damien Miller | e3b60b5 | 2006-07-10 21:08:03 +1000 | [diff] [blame] | 15 | #include <sys/types.h> |
| 16 | #include <sys/socket.h> |
| 17 | |
Damien Miller | b8fe89c | 2006-07-24 14:51:00 +1000 | [diff] [blame] | 18 | #include <netdb.h> |
Damien Miller | 565ca3f | 2006-08-19 00:23:15 +1000 | [diff] [blame] | 19 | #include <pwd.h> |
Damien Miller | a7a73ee | 2006-08-05 11:37:59 +1000 | [diff] [blame] | 20 | #include <stdio.h> |
Damien Miller | e7a1e5c | 2006-08-05 11:34:19 +1000 | [diff] [blame] | 21 | #include <stdlib.h> |
Damien Miller | e3476ed | 2006-07-24 14:13:33 +1000 | [diff] [blame] | 22 | #include <string.h> |
Damien Miller | d783435 | 2006-08-05 12:39:39 +1000 | [diff] [blame] | 23 | #include <signal.h> |
Damien Miller | e6b3b61 | 2006-07-24 14:01:23 +1000 | [diff] [blame] | 24 | #include <unistd.h> |
Damien Miller | d783435 | 2006-08-05 12:39:39 +1000 | [diff] [blame] | 25 | #include <stdarg.h> |
Damien Miller | be43ebf | 2006-07-24 13:51:51 +1000 | [diff] [blame] | 26 | |
Damien Miller | d783435 | 2006-08-05 12:39:39 +1000 | [diff] [blame] | 27 | #include "xmalloc.h" |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 28 | #include "ssh.h" |
Ben Lindstrom | 226cfa0 | 2001-01-22 05:34:40 +0000 | [diff] [blame] | 29 | #include "log.h" |
Damien Miller | d783435 | 2006-08-05 12:39:39 +1000 | [diff] [blame] | 30 | #include "buffer.h" |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 31 | #include "servconf.h" |
Damien Miller | 7892879 | 2000-04-12 20:17:38 +1000 | [diff] [blame] | 32 | #include "compat.h" |
Ben Lindstrom | 226cfa0 | 2001-01-22 05:34:40 +0000 | [diff] [blame] | 33 | #include "pathnames.h" |
Ben Lindstrom | 226cfa0 | 2001-01-22 05:34:40 +0000 | [diff] [blame] | 34 | #include "misc.h" |
| 35 | #include "cipher.h" |
Damien Miller | d783435 | 2006-08-05 12:39:39 +1000 | [diff] [blame] | 36 | #include "key.h" |
Ben Lindstrom | 06b33aa | 2001-02-15 03:01:59 +0000 | [diff] [blame] | 37 | #include "kex.h" |
| 38 | #include "mac.h" |
Darren Tucker | 4515047 | 2006-07-12 22:34:17 +1000 | [diff] [blame] | 39 | #include "match.h" |
Damien Miller | 9b439df | 2006-07-24 14:04:00 +1000 | [diff] [blame] | 40 | #include "channels.h" |
Damien Miller | 565ca3f | 2006-08-19 00:23:15 +1000 | [diff] [blame] | 41 | #include "groupaccess.h" |
Ben Lindstrom | 226cfa0 | 2001-01-22 05:34:40 +0000 | [diff] [blame] | 42 | |
Ben Lindstrom | bba8121 | 2001-06-25 05:01:22 +0000 | [diff] [blame] | 43 | static void add_listen_addr(ServerOptions *, char *, u_short); |
| 44 | static void add_one_listen_addr(ServerOptions *, char *, u_short); |
Damien Miller | 34132e5 | 2000-01-14 15:45:46 +1100 | [diff] [blame] | 45 | |
Ben Lindstrom | 7a2073c | 2002-03-22 02:30:41 +0000 | [diff] [blame] | 46 | /* Use of privilege separation or not */ |
| 47 | extern int use_privsep; |
Darren Tucker | 4515047 | 2006-07-12 22:34:17 +1000 | [diff] [blame] | 48 | extern Buffer cfg; |
Ben Lindstrom | 226cfa0 | 2001-01-22 05:34:40 +0000 | [diff] [blame] | 49 | |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 50 | /* Initializes the server options to their default values. */ |
| 51 | |
Damien Miller | 4af5130 | 2000-04-16 11:18:38 +1000 | [diff] [blame] | 52 | void |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 53 | initialize_server_options(ServerOptions *options) |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 54 | { |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 55 | memset(options, 0, sizeof(*options)); |
Damien Miller | 726273e | 2001-11-12 11:40:11 +1100 | [diff] [blame] | 56 | |
| 57 | /* Portable-specific options */ |
Damien Miller | 4e448a3 | 2003-05-14 15:11:48 +1000 | [diff] [blame] | 58 | options->use_pam = -1; |
Damien Miller | 726273e | 2001-11-12 11:40:11 +1100 | [diff] [blame] | 59 | |
| 60 | /* Standard Options */ |
Damien Miller | 34132e5 | 2000-01-14 15:45:46 +1100 | [diff] [blame] | 61 | options->num_ports = 0; |
| 62 | options->ports_from_cmdline = 0; |
| 63 | options->listen_addrs = NULL; |
Darren Tucker | 0f38323 | 2005-01-20 10:57:56 +1100 | [diff] [blame] | 64 | options->address_family = -1; |
Damien Miller | 0bc1bd8 | 2000-11-13 22:57:25 +1100 | [diff] [blame] | 65 | options->num_host_key_files = 0; |
Damien Miller | 6f83b8e | 2000-05-02 09:23:45 +1000 | [diff] [blame] | 66 | options->pid_file = NULL; |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 67 | options->server_key_bits = -1; |
| 68 | options->login_grace_time = -1; |
| 69 | options->key_regeneration_time = -1; |
Ben Lindstrom | d8a9021 | 2001-02-15 03:08:27 +0000 | [diff] [blame] | 70 | options->permit_root_login = PERMIT_NOT_SET; |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 71 | options->ignore_rhosts = -1; |
| 72 | options->ignore_user_known_hosts = -1; |
| 73 | options->print_motd = -1; |
Ben Lindstrom | 7bfff36 | 2001-03-26 05:45:53 +0000 | [diff] [blame] | 74 | options->print_lastlog = -1; |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 75 | options->x11_forwarding = -1; |
| 76 | options->x11_display_offset = -1; |
Damien Miller | 95c249f | 2002-02-05 12:11:34 +1100 | [diff] [blame] | 77 | options->x11_use_localhost = -1; |
Damien Miller | d3a1857 | 2000-06-07 19:55:44 +1000 | [diff] [blame] | 78 | options->xauth_location = NULL; |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 79 | options->strict_modes = -1; |
Damien Miller | 12c150e | 2003-12-17 16:31:10 +1100 | [diff] [blame] | 80 | options->tcp_keep_alive = -1; |
Damien Miller | fcd9320 | 2002-02-05 12:26:34 +1100 | [diff] [blame] | 81 | options->log_facility = SYSLOG_FACILITY_NOT_SET; |
| 82 | options->log_level = SYSLOG_LEVEL_NOT_SET; |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 83 | options->rhosts_rsa_authentication = -1; |
Ben Lindstrom | 5eabda3 | 2001-04-12 23:34:34 +0000 | [diff] [blame] | 84 | options->hostbased_authentication = -1; |
| 85 | options->hostbased_uses_name_from_packet_only = -1; |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 86 | options->rsa_authentication = -1; |
Damien Miller | 0bc1bd8 | 2000-11-13 22:57:25 +1100 | [diff] [blame] | 87 | options->pubkey_authentication = -1; |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 88 | options->kerberos_authentication = -1; |
| 89 | options->kerberos_or_local_passwd = -1; |
| 90 | options->kerberos_ticket_cleanup = -1; |
Darren Tucker | 22ef508 | 2003-12-31 11:37:34 +1100 | [diff] [blame] | 91 | options->kerberos_get_afs_token = -1; |
Darren Tucker | 0efd155 | 2003-08-26 11:49:55 +1000 | [diff] [blame] | 92 | options->gss_authentication=-1; |
| 93 | options->gss_cleanup_creds = -1; |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 94 | options->password_authentication = -1; |
Damien Miller | 874d77b | 2000-10-14 16:23:11 +1100 | [diff] [blame] | 95 | options->kbd_interactive_authentication = -1; |
Ben Lindstrom | 551ea37 | 2001-06-05 18:56:16 +0000 | [diff] [blame] | 96 | options->challenge_response_authentication = -1; |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 97 | options->permit_empty_passwd = -1; |
Ben Lindstrom | 5d860f0 | 2002-08-01 01:28:38 +0000 | [diff] [blame] | 98 | options->permit_user_env = -1; |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 99 | options->use_login = -1; |
Ben Lindstrom | 23e0f66 | 2002-06-21 01:09:47 +0000 | [diff] [blame] | 100 | options->compression = -1; |
Damien Miller | 50a41ed | 2000-10-16 12:14:42 +1100 | [diff] [blame] | 101 | options->allow_tcp_forwarding = -1; |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 102 | options->num_allow_users = 0; |
| 103 | options->num_deny_users = 0; |
| 104 | options->num_allow_groups = 0; |
| 105 | options->num_deny_groups = 0; |
Damien Miller | 7892879 | 2000-04-12 20:17:38 +1000 | [diff] [blame] | 106 | options->ciphers = NULL; |
Ben Lindstrom | 06b33aa | 2001-02-15 03:01:59 +0000 | [diff] [blame] | 107 | options->macs = NULL; |
Damien Miller | 7892879 | 2000-04-12 20:17:38 +1000 | [diff] [blame] | 108 | options->protocol = SSH_PROTO_UNKNOWN; |
Damien Miller | e247cc4 | 2000-05-07 12:03:14 +1000 | [diff] [blame] | 109 | options->gateway_ports = -1; |
Damien Miller | f6d9e22 | 2000-06-18 14:50:44 +1000 | [diff] [blame] | 110 | options->num_subsystems = 0; |
Damien Miller | 942da03 | 2000-08-18 13:59:06 +1000 | [diff] [blame] | 111 | options->max_startups_begin = -1; |
| 112 | options->max_startups_rate = -1; |
Damien Miller | 3702396 | 2000-07-11 17:31:38 +1000 | [diff] [blame] | 113 | options->max_startups = -1; |
Darren Tucker | 89413db | 2004-05-24 10:36:23 +1000 | [diff] [blame] | 114 | options->max_authtries = -1; |
Ben Lindstrom | 48bd7c1 | 2001-01-09 00:35:42 +0000 | [diff] [blame] | 115 | options->banner = NULL; |
Damien Miller | 3a961dc | 2003-06-03 10:25:48 +1000 | [diff] [blame] | 116 | options->use_dns = -1; |
Ben Lindstrom | 5744dc4 | 2001-04-13 23:28:01 +0000 | [diff] [blame] | 117 | options->client_alive_interval = -1; |
| 118 | options->client_alive_count_max = -1; |
Ben Lindstrom | bfb3a0e | 2001-06-05 20:25:05 +0000 | [diff] [blame] | 119 | options->authorized_keys_file = NULL; |
| 120 | options->authorized_keys_file2 = NULL; |
Darren Tucker | 46bc075 | 2004-05-02 22:11:30 +1000 | [diff] [blame] | 121 | options->num_accept_env = 0; |
Damien Miller | d27b947 | 2005-12-13 19:29:02 +1100 | [diff] [blame] | 122 | options->permit_tun = -1; |
Damien Miller | a765cf4 | 2006-07-24 14:08:13 +1000 | [diff] [blame] | 123 | options->num_permitted_opens = -1; |
Damien Miller | e275443 | 2006-07-24 14:06:47 +1000 | [diff] [blame] | 124 | options->adm_forced_command = NULL; |
Damien Miller | d8cb1f1 | 2008-02-10 22:40:12 +1100 | [diff] [blame] | 125 | options->chroot_directory = NULL; |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 126 | } |
| 127 | |
Damien Miller | 4af5130 | 2000-04-16 11:18:38 +1000 | [diff] [blame] | 128 | void |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 129 | fill_default_server_options(ServerOptions *options) |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 130 | { |
Damien Miller | 726273e | 2001-11-12 11:40:11 +1100 | [diff] [blame] | 131 | /* Portable-specific options */ |
Damien Miller | 4e448a3 | 2003-05-14 15:11:48 +1000 | [diff] [blame] | 132 | if (options->use_pam == -1) |
Damien Miller | 5c3a558 | 2003-09-23 22:12:38 +1000 | [diff] [blame] | 133 | options->use_pam = 0; |
Damien Miller | 726273e | 2001-11-12 11:40:11 +1100 | [diff] [blame] | 134 | |
| 135 | /* Standard Options */ |
Damien Miller | 0bc1bd8 | 2000-11-13 22:57:25 +1100 | [diff] [blame] | 136 | if (options->protocol == SSH_PROTO_UNKNOWN) |
| 137 | options->protocol = SSH_PROTO_1|SSH_PROTO_2; |
| 138 | if (options->num_host_key_files == 0) { |
| 139 | /* fill default hostkeys for protocols */ |
| 140 | if (options->protocol & SSH_PROTO_1) |
Damien Miller | 7fc2373 | 2002-01-22 23:19:11 +1100 | [diff] [blame] | 141 | options->host_key_files[options->num_host_key_files++] = |
| 142 | _PATH_HOST_KEY_FILE; |
| 143 | if (options->protocol & SSH_PROTO_2) { |
| 144 | options->host_key_files[options->num_host_key_files++] = |
| 145 | _PATH_HOST_RSA_KEY_FILE; |
| 146 | options->host_key_files[options->num_host_key_files++] = |
| 147 | _PATH_HOST_DSA_KEY_FILE; |
| 148 | } |
Damien Miller | 0bc1bd8 | 2000-11-13 22:57:25 +1100 | [diff] [blame] | 149 | } |
Damien Miller | 34132e5 | 2000-01-14 15:45:46 +1100 | [diff] [blame] | 150 | if (options->num_ports == 0) |
| 151 | options->ports[options->num_ports++] = SSH_DEFAULT_PORT; |
| 152 | if (options->listen_addrs == NULL) |
Ben Lindstrom | 19066a1 | 2001-04-12 23:39:26 +0000 | [diff] [blame] | 153 | add_listen_addr(options, NULL, 0); |
Damien Miller | 6f83b8e | 2000-05-02 09:23:45 +1000 | [diff] [blame] | 154 | if (options->pid_file == NULL) |
Ben Lindstrom | 226cfa0 | 2001-01-22 05:34:40 +0000 | [diff] [blame] | 155 | options->pid_file = _PATH_SSH_DAEMON_PID_FILE; |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 156 | if (options->server_key_bits == -1) |
| 157 | options->server_key_bits = 768; |
| 158 | if (options->login_grace_time == -1) |
Damien Miller | c134863 | 2002-09-05 14:35:14 +1000 | [diff] [blame] | 159 | options->login_grace_time = 120; |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 160 | if (options->key_regeneration_time == -1) |
| 161 | options->key_regeneration_time = 3600; |
Ben Lindstrom | d8a9021 | 2001-02-15 03:08:27 +0000 | [diff] [blame] | 162 | if (options->permit_root_login == PERMIT_NOT_SET) |
| 163 | options->permit_root_login = PERMIT_YES; |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 164 | if (options->ignore_rhosts == -1) |
Damien Miller | 98c7ad6 | 2000-03-09 21:27:49 +1100 | [diff] [blame] | 165 | options->ignore_rhosts = 1; |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 166 | if (options->ignore_user_known_hosts == -1) |
| 167 | options->ignore_user_known_hosts = 0; |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 168 | if (options->print_motd == -1) |
| 169 | options->print_motd = 1; |
Ben Lindstrom | 7bfff36 | 2001-03-26 05:45:53 +0000 | [diff] [blame] | 170 | if (options->print_lastlog == -1) |
| 171 | options->print_lastlog = 1; |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 172 | if (options->x11_forwarding == -1) |
Damien Miller | 98c7ad6 | 2000-03-09 21:27:49 +1100 | [diff] [blame] | 173 | options->x11_forwarding = 0; |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 174 | if (options->x11_display_offset == -1) |
Damien Miller | 98c7ad6 | 2000-03-09 21:27:49 +1100 | [diff] [blame] | 175 | options->x11_display_offset = 10; |
Damien Miller | 95c249f | 2002-02-05 12:11:34 +1100 | [diff] [blame] | 176 | if (options->x11_use_localhost == -1) |
| 177 | options->x11_use_localhost = 1; |
Damien Miller | d3a1857 | 2000-06-07 19:55:44 +1000 | [diff] [blame] | 178 | if (options->xauth_location == NULL) |
Ben Lindstrom | 1bf11f6 | 2001-06-09 01:48:01 +0000 | [diff] [blame] | 179 | options->xauth_location = _PATH_XAUTH; |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 180 | if (options->strict_modes == -1) |
| 181 | options->strict_modes = 1; |
Damien Miller | 12c150e | 2003-12-17 16:31:10 +1100 | [diff] [blame] | 182 | if (options->tcp_keep_alive == -1) |
| 183 | options->tcp_keep_alive = 1; |
Damien Miller | fcd9320 | 2002-02-05 12:26:34 +1100 | [diff] [blame] | 184 | if (options->log_facility == SYSLOG_FACILITY_NOT_SET) |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 185 | options->log_facility = SYSLOG_FACILITY_AUTH; |
Damien Miller | fcd9320 | 2002-02-05 12:26:34 +1100 | [diff] [blame] | 186 | if (options->log_level == SYSLOG_LEVEL_NOT_SET) |
Ben Lindstrom | db65e8f | 2001-01-19 04:26:52 +0000 | [diff] [blame] | 187 | options->log_level = SYSLOG_LEVEL_INFO; |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 188 | if (options->rhosts_rsa_authentication == -1) |
Damien Miller | 98c7ad6 | 2000-03-09 21:27:49 +1100 | [diff] [blame] | 189 | options->rhosts_rsa_authentication = 0; |
Ben Lindstrom | 5eabda3 | 2001-04-12 23:34:34 +0000 | [diff] [blame] | 190 | if (options->hostbased_authentication == -1) |
| 191 | options->hostbased_authentication = 0; |
| 192 | if (options->hostbased_uses_name_from_packet_only == -1) |
| 193 | options->hostbased_uses_name_from_packet_only = 0; |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 194 | if (options->rsa_authentication == -1) |
| 195 | options->rsa_authentication = 1; |
Damien Miller | 0bc1bd8 | 2000-11-13 22:57:25 +1100 | [diff] [blame] | 196 | if (options->pubkey_authentication == -1) |
| 197 | options->pubkey_authentication = 1; |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 198 | if (options->kerberos_authentication == -1) |
Damien Miller | d7de14b | 2002-04-23 21:04:51 +1000 | [diff] [blame] | 199 | options->kerberos_authentication = 0; |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 200 | if (options->kerberos_or_local_passwd == -1) |
| 201 | options->kerberos_or_local_passwd = 1; |
| 202 | if (options->kerberos_ticket_cleanup == -1) |
| 203 | options->kerberos_ticket_cleanup = 1; |
Darren Tucker | 22ef508 | 2003-12-31 11:37:34 +1100 | [diff] [blame] | 204 | if (options->kerberos_get_afs_token == -1) |
| 205 | options->kerberos_get_afs_token = 0; |
Darren Tucker | 0efd155 | 2003-08-26 11:49:55 +1000 | [diff] [blame] | 206 | if (options->gss_authentication == -1) |
| 207 | options->gss_authentication = 0; |
| 208 | if (options->gss_cleanup_creds == -1) |
| 209 | options->gss_cleanup_creds = 1; |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 210 | if (options->password_authentication == -1) |
| 211 | options->password_authentication = 1; |
Damien Miller | 874d77b | 2000-10-14 16:23:11 +1100 | [diff] [blame] | 212 | if (options->kbd_interactive_authentication == -1) |
| 213 | options->kbd_interactive_authentication = 0; |
Ben Lindstrom | 551ea37 | 2001-06-05 18:56:16 +0000 | [diff] [blame] | 214 | if (options->challenge_response_authentication == -1) |
| 215 | options->challenge_response_authentication = 1; |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 216 | if (options->permit_empty_passwd == -1) |
Damien Miller | 98c7ad6 | 2000-03-09 21:27:49 +1100 | [diff] [blame] | 217 | options->permit_empty_passwd = 0; |
Ben Lindstrom | 5d860f0 | 2002-08-01 01:28:38 +0000 | [diff] [blame] | 218 | if (options->permit_user_env == -1) |
| 219 | options->permit_user_env = 0; |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 220 | if (options->use_login == -1) |
| 221 | options->use_login = 0; |
Ben Lindstrom | 23e0f66 | 2002-06-21 01:09:47 +0000 | [diff] [blame] | 222 | if (options->compression == -1) |
Damien Miller | 9786e6e | 2005-07-26 21:54:56 +1000 | [diff] [blame] | 223 | options->compression = COMP_DELAYED; |
Damien Miller | 50a41ed | 2000-10-16 12:14:42 +1100 | [diff] [blame] | 224 | if (options->allow_tcp_forwarding == -1) |
| 225 | options->allow_tcp_forwarding = 1; |
Damien Miller | e247cc4 | 2000-05-07 12:03:14 +1000 | [diff] [blame] | 226 | if (options->gateway_ports == -1) |
| 227 | options->gateway_ports = 0; |
Damien Miller | 3702396 | 2000-07-11 17:31:38 +1000 | [diff] [blame] | 228 | if (options->max_startups == -1) |
| 229 | options->max_startups = 10; |
Damien Miller | 942da03 | 2000-08-18 13:59:06 +1000 | [diff] [blame] | 230 | if (options->max_startups_rate == -1) |
| 231 | options->max_startups_rate = 100; /* 100% */ |
| 232 | if (options->max_startups_begin == -1) |
| 233 | options->max_startups_begin = options->max_startups; |
Darren Tucker | 89413db | 2004-05-24 10:36:23 +1000 | [diff] [blame] | 234 | if (options->max_authtries == -1) |
| 235 | options->max_authtries = DEFAULT_AUTH_FAIL_MAX; |
Damien Miller | 3a961dc | 2003-06-03 10:25:48 +1000 | [diff] [blame] | 236 | if (options->use_dns == -1) |
| 237 | options->use_dns = 1; |
Ben Lindstrom | 5744dc4 | 2001-04-13 23:28:01 +0000 | [diff] [blame] | 238 | if (options->client_alive_interval == -1) |
Damien Miller | 9f0f5c6 | 2001-12-21 14:45:46 +1100 | [diff] [blame] | 239 | options->client_alive_interval = 0; |
Ben Lindstrom | 5744dc4 | 2001-04-13 23:28:01 +0000 | [diff] [blame] | 240 | if (options->client_alive_count_max == -1) |
| 241 | options->client_alive_count_max = 3; |
Damien Miller | 75413ac | 2001-11-12 11:14:35 +1100 | [diff] [blame] | 242 | if (options->authorized_keys_file2 == NULL) { |
| 243 | /* authorized_keys_file2 falls back to authorized_keys_file */ |
| 244 | if (options->authorized_keys_file != NULL) |
| 245 | options->authorized_keys_file2 = options->authorized_keys_file; |
| 246 | else |
| 247 | options->authorized_keys_file2 = _PATH_SSH_USER_PERMITTED_KEYS2; |
| 248 | } |
| 249 | if (options->authorized_keys_file == NULL) |
| 250 | options->authorized_keys_file = _PATH_SSH_USER_PERMITTED_KEYS; |
Damien Miller | d27b947 | 2005-12-13 19:29:02 +1100 | [diff] [blame] | 251 | if (options->permit_tun == -1) |
Damien Miller | 7b58e80 | 2005-12-13 19:33:19 +1100 | [diff] [blame] | 252 | options->permit_tun = SSH_TUNMODE_NO; |
Ben Lindstrom | 7a2073c | 2002-03-22 02:30:41 +0000 | [diff] [blame] | 253 | |
Ben Lindstrom | fb62a69 | 2002-06-06 19:47:11 +0000 | [diff] [blame] | 254 | /* Turn privilege separation on by default */ |
Ben Lindstrom | 7a2073c | 2002-03-22 02:30:41 +0000 | [diff] [blame] | 255 | if (use_privsep == -1) |
Ben Lindstrom | fb62a69 | 2002-06-06 19:47:11 +0000 | [diff] [blame] | 256 | use_privsep = 1; |
Damien Miller | 4903eb4 | 2002-06-21 16:20:44 +1000 | [diff] [blame] | 257 | |
Tim Rice | 40017b0 | 2002-07-14 13:36:49 -0700 | [diff] [blame] | 258 | #ifndef HAVE_MMAP |
Damien Miller | 4903eb4 | 2002-06-21 16:20:44 +1000 | [diff] [blame] | 259 | if (use_privsep && options->compression == 1) { |
| 260 | error("This platform does not support both privilege " |
| 261 | "separation and compression"); |
| 262 | error("Compression disabled"); |
| 263 | options->compression = 0; |
| 264 | } |
| 265 | #endif |
| 266 | |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 267 | } |
| 268 | |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 269 | /* Keyword tokens. */ |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 270 | typedef enum { |
| 271 | sBadOption, /* == unknown option */ |
Damien Miller | 726273e | 2001-11-12 11:40:11 +1100 | [diff] [blame] | 272 | /* Portable-specific options */ |
Damien Miller | 4e448a3 | 2003-05-14 15:11:48 +1000 | [diff] [blame] | 273 | sUsePAM, |
Damien Miller | 726273e | 2001-11-12 11:40:11 +1100 | [diff] [blame] | 274 | /* Standard Options */ |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 275 | sPort, sHostKeyFile, sServerKeyBits, sLoginGraceTime, sKeyRegenerationTime, |
| 276 | sPermitRootLogin, sLogFacility, sLogLevel, |
Darren Tucker | ec960f2 | 2003-08-13 20:37:05 +1000 | [diff] [blame] | 277 | sRhostsRSAAuthentication, sRSAAuthentication, |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 278 | sKerberosAuthentication, sKerberosOrLocalPasswd, sKerberosTicketCleanup, |
Darren Tucker | 22ef508 | 2003-12-31 11:37:34 +1100 | [diff] [blame] | 279 | sKerberosGetAFSToken, |
Darren Tucker | 6aaa58c | 2003-08-02 22:24:49 +1000 | [diff] [blame] | 280 | sKerberosTgtPassing, sChallengeResponseAuthentication, |
Darren Tucker | 0f38323 | 2005-01-20 10:57:56 +1100 | [diff] [blame] | 281 | sPasswordAuthentication, sKbdInteractiveAuthentication, |
| 282 | sListenAddress, sAddressFamily, |
Ben Lindstrom | 7bfff36 | 2001-03-26 05:45:53 +0000 | [diff] [blame] | 283 | sPrintMotd, sPrintLastLog, sIgnoreRhosts, |
Damien Miller | 95c249f | 2002-02-05 12:11:34 +1100 | [diff] [blame] | 284 | sX11Forwarding, sX11DisplayOffset, sX11UseLocalhost, |
Damien Miller | 12c150e | 2003-12-17 16:31:10 +1100 | [diff] [blame] | 285 | sStrictModes, sEmptyPasswd, sTCPKeepAlive, |
Ben Lindstrom | 5d860f0 | 2002-08-01 01:28:38 +0000 | [diff] [blame] | 286 | sPermitUserEnvironment, sUseLogin, sAllowTcpForwarding, sCompression, |
Damien Miller | 50a41ed | 2000-10-16 12:14:42 +1100 | [diff] [blame] | 287 | sAllowUsers, sDenyUsers, sAllowGroups, sDenyGroups, |
Ben Lindstrom | 06b33aa | 2001-02-15 03:01:59 +0000 | [diff] [blame] | 288 | sIgnoreUserKnownHosts, sCiphers, sMacs, sProtocol, sPidFile, |
Darren Tucker | 89413db | 2004-05-24 10:36:23 +1000 | [diff] [blame] | 289 | sGatewayPorts, sPubkeyAuthentication, sXAuthLocation, sSubsystem, |
| 290 | sMaxStartups, sMaxAuthTries, |
Damien Miller | 3a961dc | 2003-06-03 10:25:48 +1000 | [diff] [blame] | 291 | sBanner, sUseDNS, sHostbasedAuthentication, |
Damien Miller | 9f0f5c6 | 2001-12-21 14:45:46 +1100 | [diff] [blame] | 292 | sHostbasedUsesNameFromPacketOnly, sClientAliveInterval, |
Ben Lindstrom | bfb3a0e | 2001-06-05 20:25:05 +0000 | [diff] [blame] | 293 | sClientAliveCountMax, sAuthorizedKeysFile, sAuthorizedKeysFile2, |
Damien Miller | d27b947 | 2005-12-13 19:29:02 +1100 | [diff] [blame] | 294 | sGssAuthentication, sGssCleanupCreds, sAcceptEnv, sPermitTunnel, |
Damien Miller | d8cb1f1 | 2008-02-10 22:40:12 +1100 | [diff] [blame] | 295 | sMatch, sPermitOpen, sForceCommand, sChrootDirectory, |
Ben Lindstrom | c743134 | 2002-03-22 03:11:49 +0000 | [diff] [blame] | 296 | sUsePrivilegeSeparation, |
Damien Miller | f9b3feb | 2003-05-16 11:38:32 +1000 | [diff] [blame] | 297 | sDeprecated, sUnsupported |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 298 | } ServerOpCodes; |
| 299 | |
Darren Tucker | 4515047 | 2006-07-12 22:34:17 +1000 | [diff] [blame] | 300 | #define SSHCFG_GLOBAL 0x01 /* allowed in main section of sshd_config */ |
| 301 | #define SSHCFG_MATCH 0x02 /* allowed inside a Match section */ |
| 302 | #define SSHCFG_ALL (SSHCFG_GLOBAL|SSHCFG_MATCH) |
| 303 | |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 304 | /* Textual representation of the tokens. */ |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 305 | static struct { |
| 306 | const char *name; |
| 307 | ServerOpCodes opcode; |
Darren Tucker | 4515047 | 2006-07-12 22:34:17 +1000 | [diff] [blame] | 308 | u_int flags; |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 309 | } keywords[] = { |
Damien Miller | 726273e | 2001-11-12 11:40:11 +1100 | [diff] [blame] | 310 | /* Portable-specific options */ |
Damien Miller | 6ac2c48 | 2003-05-16 11:42:35 +1000 | [diff] [blame] | 311 | #ifdef USE_PAM |
Darren Tucker | 4515047 | 2006-07-12 22:34:17 +1000 | [diff] [blame] | 312 | { "usepam", sUsePAM, SSHCFG_GLOBAL }, |
Damien Miller | 6ac2c48 | 2003-05-16 11:42:35 +1000 | [diff] [blame] | 313 | #else |
Darren Tucker | 4515047 | 2006-07-12 22:34:17 +1000 | [diff] [blame] | 314 | { "usepam", sUnsupported, SSHCFG_GLOBAL }, |
Damien Miller | 6ac2c48 | 2003-05-16 11:42:35 +1000 | [diff] [blame] | 315 | #endif |
Darren Tucker | 4515047 | 2006-07-12 22:34:17 +1000 | [diff] [blame] | 316 | { "pamauthenticationviakbdint", sDeprecated, SSHCFG_GLOBAL }, |
Damien Miller | 726273e | 2001-11-12 11:40:11 +1100 | [diff] [blame] | 317 | /* Standard Options */ |
Darren Tucker | 4515047 | 2006-07-12 22:34:17 +1000 | [diff] [blame] | 318 | { "port", sPort, SSHCFG_GLOBAL }, |
| 319 | { "hostkey", sHostKeyFile, SSHCFG_GLOBAL }, |
| 320 | { "hostdsakey", sHostKeyFile, SSHCFG_GLOBAL }, /* alias */ |
| 321 | { "pidfile", sPidFile, SSHCFG_GLOBAL }, |
| 322 | { "serverkeybits", sServerKeyBits, SSHCFG_GLOBAL }, |
| 323 | { "logingracetime", sLoginGraceTime, SSHCFG_GLOBAL }, |
| 324 | { "keyregenerationinterval", sKeyRegenerationTime, SSHCFG_GLOBAL }, |
Darren Tucker | 15f9427 | 2008-01-01 20:36:56 +1100 | [diff] [blame] | 325 | { "permitrootlogin", sPermitRootLogin, SSHCFG_ALL }, |
Darren Tucker | 4515047 | 2006-07-12 22:34:17 +1000 | [diff] [blame] | 326 | { "syslogfacility", sLogFacility, SSHCFG_GLOBAL }, |
| 327 | { "loglevel", sLogLevel, SSHCFG_GLOBAL }, |
| 328 | { "rhostsauthentication", sDeprecated, SSHCFG_GLOBAL }, |
Darren Tucker | 1629c07 | 2007-02-19 22:25:37 +1100 | [diff] [blame] | 329 | { "rhostsrsaauthentication", sRhostsRSAAuthentication, SSHCFG_ALL }, |
| 330 | { "hostbasedauthentication", sHostbasedAuthentication, SSHCFG_ALL }, |
Darren Tucker | 4515047 | 2006-07-12 22:34:17 +1000 | [diff] [blame] | 331 | { "hostbasedusesnamefrompacketonly", sHostbasedUsesNameFromPacketOnly, SSHCFG_GLOBAL }, |
Darren Tucker | 1629c07 | 2007-02-19 22:25:37 +1100 | [diff] [blame] | 332 | { "rsaauthentication", sRSAAuthentication, SSHCFG_ALL }, |
| 333 | { "pubkeyauthentication", sPubkeyAuthentication, SSHCFG_ALL }, |
Darren Tucker | 4515047 | 2006-07-12 22:34:17 +1000 | [diff] [blame] | 334 | { "dsaauthentication", sPubkeyAuthentication, SSHCFG_GLOBAL }, /* alias */ |
Darren Tucker | 6aaa58c | 2003-08-02 22:24:49 +1000 | [diff] [blame] | 335 | #ifdef KRB5 |
Darren Tucker | 1629c07 | 2007-02-19 22:25:37 +1100 | [diff] [blame] | 336 | { "kerberosauthentication", sKerberosAuthentication, SSHCFG_ALL }, |
Darren Tucker | 4515047 | 2006-07-12 22:34:17 +1000 | [diff] [blame] | 337 | { "kerberosorlocalpasswd", sKerberosOrLocalPasswd, SSHCFG_GLOBAL }, |
| 338 | { "kerberosticketcleanup", sKerberosTicketCleanup, SSHCFG_GLOBAL }, |
Darren Tucker | 3c78c5e | 2004-01-23 22:03:10 +1100 | [diff] [blame] | 339 | #ifdef USE_AFS |
Darren Tucker | 4515047 | 2006-07-12 22:34:17 +1000 | [diff] [blame] | 340 | { "kerberosgetafstoken", sKerberosGetAFSToken, SSHCFG_GLOBAL }, |
Damien Miller | f9b3feb | 2003-05-16 11:38:32 +1000 | [diff] [blame] | 341 | #else |
Darren Tucker | 4515047 | 2006-07-12 22:34:17 +1000 | [diff] [blame] | 342 | { "kerberosgetafstoken", sUnsupported, SSHCFG_GLOBAL }, |
Darren Tucker | 409cb32 | 2004-01-05 22:36:51 +1100 | [diff] [blame] | 343 | #endif |
| 344 | #else |
Darren Tucker | 1629c07 | 2007-02-19 22:25:37 +1100 | [diff] [blame] | 345 | { "kerberosauthentication", sUnsupported, SSHCFG_ALL }, |
Darren Tucker | 4515047 | 2006-07-12 22:34:17 +1000 | [diff] [blame] | 346 | { "kerberosorlocalpasswd", sUnsupported, SSHCFG_GLOBAL }, |
| 347 | { "kerberosticketcleanup", sUnsupported, SSHCFG_GLOBAL }, |
| 348 | { "kerberosgetafstoken", sUnsupported, SSHCFG_GLOBAL }, |
Damien Miller | f9b3feb | 2003-05-16 11:38:32 +1000 | [diff] [blame] | 349 | #endif |
Darren Tucker | 4515047 | 2006-07-12 22:34:17 +1000 | [diff] [blame] | 350 | { "kerberostgtpassing", sUnsupported, SSHCFG_GLOBAL }, |
| 351 | { "afstokenpassing", sUnsupported, SSHCFG_GLOBAL }, |
Darren Tucker | 0efd155 | 2003-08-26 11:49:55 +1000 | [diff] [blame] | 352 | #ifdef GSSAPI |
Darren Tucker | 1629c07 | 2007-02-19 22:25:37 +1100 | [diff] [blame] | 353 | { "gssapiauthentication", sGssAuthentication, SSHCFG_ALL }, |
Darren Tucker | 4515047 | 2006-07-12 22:34:17 +1000 | [diff] [blame] | 354 | { "gssapicleanupcredentials", sGssCleanupCreds, SSHCFG_GLOBAL }, |
Darren Tucker | 0efd155 | 2003-08-26 11:49:55 +1000 | [diff] [blame] | 355 | #else |
Darren Tucker | 1629c07 | 2007-02-19 22:25:37 +1100 | [diff] [blame] | 356 | { "gssapiauthentication", sUnsupported, SSHCFG_ALL }, |
Darren Tucker | 4515047 | 2006-07-12 22:34:17 +1000 | [diff] [blame] | 357 | { "gssapicleanupcredentials", sUnsupported, SSHCFG_GLOBAL }, |
Darren Tucker | 0efd155 | 2003-08-26 11:49:55 +1000 | [diff] [blame] | 358 | #endif |
Darren Tucker | 1629c07 | 2007-02-19 22:25:37 +1100 | [diff] [blame] | 359 | { "passwordauthentication", sPasswordAuthentication, SSHCFG_ALL }, |
| 360 | { "kbdinteractiveauthentication", sKbdInteractiveAuthentication, SSHCFG_ALL }, |
Darren Tucker | 1d75f22 | 2007-03-01 21:31:28 +1100 | [diff] [blame] | 361 | { "challengeresponseauthentication", sChallengeResponseAuthentication, SSHCFG_GLOBAL }, |
Darren Tucker | 4515047 | 2006-07-12 22:34:17 +1000 | [diff] [blame] | 362 | { "skeyauthentication", sChallengeResponseAuthentication, SSHCFG_GLOBAL }, /* alias */ |
| 363 | { "checkmail", sDeprecated, SSHCFG_GLOBAL }, |
| 364 | { "listenaddress", sListenAddress, SSHCFG_GLOBAL }, |
| 365 | { "addressfamily", sAddressFamily, SSHCFG_GLOBAL }, |
| 366 | { "printmotd", sPrintMotd, SSHCFG_GLOBAL }, |
| 367 | { "printlastlog", sPrintLastLog, SSHCFG_GLOBAL }, |
| 368 | { "ignorerhosts", sIgnoreRhosts, SSHCFG_GLOBAL }, |
| 369 | { "ignoreuserknownhosts", sIgnoreUserKnownHosts, SSHCFG_GLOBAL }, |
Damien Miller | d1de995 | 2006-07-24 14:05:48 +1000 | [diff] [blame] | 370 | { "x11forwarding", sX11Forwarding, SSHCFG_ALL }, |
| 371 | { "x11displayoffset", sX11DisplayOffset, SSHCFG_ALL }, |
| 372 | { "x11uselocalhost", sX11UseLocalhost, SSHCFG_ALL }, |
Darren Tucker | 4515047 | 2006-07-12 22:34:17 +1000 | [diff] [blame] | 373 | { "xauthlocation", sXAuthLocation, SSHCFG_GLOBAL }, |
| 374 | { "strictmodes", sStrictModes, SSHCFG_GLOBAL }, |
| 375 | { "permitemptypasswords", sEmptyPasswd, SSHCFG_GLOBAL }, |
| 376 | { "permituserenvironment", sPermitUserEnvironment, SSHCFG_GLOBAL }, |
| 377 | { "uselogin", sUseLogin, SSHCFG_GLOBAL }, |
| 378 | { "compression", sCompression, SSHCFG_GLOBAL }, |
| 379 | { "tcpkeepalive", sTCPKeepAlive, SSHCFG_GLOBAL }, |
| 380 | { "keepalive", sTCPKeepAlive, SSHCFG_GLOBAL }, /* obsolete alias */ |
| 381 | { "allowtcpforwarding", sAllowTcpForwarding, SSHCFG_ALL }, |
| 382 | { "allowusers", sAllowUsers, SSHCFG_GLOBAL }, |
| 383 | { "denyusers", sDenyUsers, SSHCFG_GLOBAL }, |
| 384 | { "allowgroups", sAllowGroups, SSHCFG_GLOBAL }, |
| 385 | { "denygroups", sDenyGroups, SSHCFG_GLOBAL }, |
| 386 | { "ciphers", sCiphers, SSHCFG_GLOBAL }, |
| 387 | { "macs", sMacs, SSHCFG_GLOBAL }, |
| 388 | { "protocol", sProtocol, SSHCFG_GLOBAL }, |
| 389 | { "gatewayports", sGatewayPorts, SSHCFG_ALL }, |
| 390 | { "subsystem", sSubsystem, SSHCFG_GLOBAL }, |
| 391 | { "maxstartups", sMaxStartups, SSHCFG_GLOBAL }, |
| 392 | { "maxauthtries", sMaxAuthTries, SSHCFG_GLOBAL }, |
Darren Tucker | 1629c07 | 2007-02-19 22:25:37 +1100 | [diff] [blame] | 393 | { "banner", sBanner, SSHCFG_ALL }, |
Darren Tucker | 4515047 | 2006-07-12 22:34:17 +1000 | [diff] [blame] | 394 | { "usedns", sUseDNS, SSHCFG_GLOBAL }, |
| 395 | { "verifyreversemapping", sDeprecated, SSHCFG_GLOBAL }, |
| 396 | { "reversemappingcheck", sDeprecated, SSHCFG_GLOBAL }, |
| 397 | { "clientaliveinterval", sClientAliveInterval, SSHCFG_GLOBAL }, |
| 398 | { "clientalivecountmax", sClientAliveCountMax, SSHCFG_GLOBAL }, |
| 399 | { "authorizedkeysfile", sAuthorizedKeysFile, SSHCFG_GLOBAL }, |
| 400 | { "authorizedkeysfile2", sAuthorizedKeysFile2, SSHCFG_GLOBAL }, |
| 401 | { "useprivilegeseparation", sUsePrivilegeSeparation, SSHCFG_GLOBAL }, |
| 402 | { "acceptenv", sAcceptEnv, SSHCFG_GLOBAL }, |
| 403 | { "permittunnel", sPermitTunnel, SSHCFG_GLOBAL }, |
Damien Miller | 9b439df | 2006-07-24 14:04:00 +1000 | [diff] [blame] | 404 | { "match", sMatch, SSHCFG_ALL }, |
| 405 | { "permitopen", sPermitOpen, SSHCFG_ALL }, |
Damien Miller | e275443 | 2006-07-24 14:06:47 +1000 | [diff] [blame] | 406 | { "forcecommand", sForceCommand, SSHCFG_ALL }, |
Damien Miller | d8cb1f1 | 2008-02-10 22:40:12 +1100 | [diff] [blame] | 407 | { "chrootdirectory", sChrootDirectory, SSHCFG_ALL }, |
Darren Tucker | 4515047 | 2006-07-12 22:34:17 +1000 | [diff] [blame] | 408 | { NULL, sBadOption, 0 } |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 409 | }; |
| 410 | |
Damien Miller | 5428f64 | 1999-11-25 11:54:57 +1100 | [diff] [blame] | 411 | /* |
Ben Lindstrom | 3704c26 | 2001-04-02 18:20:03 +0000 | [diff] [blame] | 412 | * Returns the number of the token pointed to by cp or sBadOption. |
Damien Miller | 5428f64 | 1999-11-25 11:54:57 +1100 | [diff] [blame] | 413 | */ |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 414 | |
Damien Miller | 4af5130 | 2000-04-16 11:18:38 +1000 | [diff] [blame] | 415 | static ServerOpCodes |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 416 | parse_token(const char *cp, const char *filename, |
Darren Tucker | 4515047 | 2006-07-12 22:34:17 +1000 | [diff] [blame] | 417 | int linenum, u_int *flags) |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 418 | { |
Ben Lindstrom | 46c1622 | 2000-12-22 01:43:59 +0000 | [diff] [blame] | 419 | u_int i; |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 420 | |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 421 | for (i = 0; keywords[i].name; i++) |
Darren Tucker | 4515047 | 2006-07-12 22:34:17 +1000 | [diff] [blame] | 422 | if (strcasecmp(cp, keywords[i].name) == 0) { |
| 423 | *flags = keywords[i].flags; |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 424 | return keywords[i].opcode; |
Darren Tucker | 4515047 | 2006-07-12 22:34:17 +1000 | [diff] [blame] | 425 | } |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 426 | |
Ben Lindstrom | b5cdc66 | 2001-04-16 02:13:26 +0000 | [diff] [blame] | 427 | error("%s: line %d: Bad configuration option: %s", |
| 428 | filename, linenum, cp); |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 429 | return sBadOption; |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 430 | } |
| 431 | |
Ben Lindstrom | bba8121 | 2001-06-25 05:01:22 +0000 | [diff] [blame] | 432 | static void |
Ben Lindstrom | 19066a1 | 2001-04-12 23:39:26 +0000 | [diff] [blame] | 433 | add_listen_addr(ServerOptions *options, char *addr, u_short port) |
Damien Miller | 34132e5 | 2000-01-14 15:45:46 +1100 | [diff] [blame] | 434 | { |
Damien Miller | eccb9de | 2005-06-17 12:59:34 +1000 | [diff] [blame] | 435 | u_int i; |
Damien Miller | 34132e5 | 2000-01-14 15:45:46 +1100 | [diff] [blame] | 436 | |
| 437 | if (options->num_ports == 0) |
| 438 | options->ports[options->num_ports++] = SSH_DEFAULT_PORT; |
Darren Tucker | 0f38323 | 2005-01-20 10:57:56 +1100 | [diff] [blame] | 439 | if (options->address_family == -1) |
| 440 | options->address_family = AF_UNSPEC; |
Ben Lindstrom | 19066a1 | 2001-04-12 23:39:26 +0000 | [diff] [blame] | 441 | if (port == 0) |
Ben Lindstrom | c510af4 | 2001-04-07 17:25:48 +0000 | [diff] [blame] | 442 | for (i = 0; i < options->num_ports; i++) |
| 443 | add_one_listen_addr(options, addr, options->ports[i]); |
| 444 | else |
Ben Lindstrom | 19066a1 | 2001-04-12 23:39:26 +0000 | [diff] [blame] | 445 | add_one_listen_addr(options, addr, port); |
Ben Lindstrom | c510af4 | 2001-04-07 17:25:48 +0000 | [diff] [blame] | 446 | } |
| 447 | |
Ben Lindstrom | bba8121 | 2001-06-25 05:01:22 +0000 | [diff] [blame] | 448 | static void |
Ben Lindstrom | c510af4 | 2001-04-07 17:25:48 +0000 | [diff] [blame] | 449 | add_one_listen_addr(ServerOptions *options, char *addr, u_short port) |
| 450 | { |
| 451 | struct addrinfo hints, *ai, *aitop; |
| 452 | char strport[NI_MAXSERV]; |
| 453 | int gaierr; |
| 454 | |
| 455 | memset(&hints, 0, sizeof(hints)); |
Darren Tucker | 0f38323 | 2005-01-20 10:57:56 +1100 | [diff] [blame] | 456 | hints.ai_family = options->address_family; |
Ben Lindstrom | c510af4 | 2001-04-07 17:25:48 +0000 | [diff] [blame] | 457 | hints.ai_socktype = SOCK_STREAM; |
| 458 | hints.ai_flags = (addr == NULL) ? AI_PASSIVE : 0; |
Ben Lindstrom | e135363 | 2002-06-23 21:29:23 +0000 | [diff] [blame] | 459 | snprintf(strport, sizeof strport, "%u", port); |
Ben Lindstrom | c510af4 | 2001-04-07 17:25:48 +0000 | [diff] [blame] | 460 | if ((gaierr = getaddrinfo(addr, strport, &hints, &aitop)) != 0) |
| 461 | fatal("bad addr or host: %s (%s)", |
| 462 | addr ? addr : "<NULL>", |
Darren Tucker | 4abde77 | 2007-12-29 02:43:51 +1100 | [diff] [blame] | 463 | ssh_gai_strerror(gaierr)); |
Ben Lindstrom | c510af4 | 2001-04-07 17:25:48 +0000 | [diff] [blame] | 464 | for (ai = aitop; ai->ai_next; ai = ai->ai_next) |
| 465 | ; |
| 466 | ai->ai_next = options->listen_addrs; |
| 467 | options->listen_addrs = aitop; |
Damien Miller | 34132e5 | 2000-01-14 15:45:46 +1100 | [diff] [blame] | 468 | } |
| 469 | |
Darren Tucker | 4515047 | 2006-07-12 22:34:17 +1000 | [diff] [blame] | 470 | /* |
| 471 | * The strategy for the Match blocks is that the config file is parsed twice. |
| 472 | * |
| 473 | * The first time is at startup. activep is initialized to 1 and the |
| 474 | * directives in the global context are processed and acted on. Hitting a |
| 475 | * Match directive unsets activep and the directives inside the block are |
| 476 | * checked for syntax only. |
| 477 | * |
| 478 | * The second time is after a connection has been established but before |
| 479 | * authentication. activep is initialized to 2 and global config directives |
| 480 | * are ignored since they have already been processed. If the criteria in a |
| 481 | * Match block is met, activep is set and the subsequent directives |
| 482 | * processed and actioned until EOF or another Match block unsets it. Any |
| 483 | * options set are copied into the main server config. |
| 484 | * |
| 485 | * Potential additions/improvements: |
| 486 | * - Add Match support for pre-kex directives, eg Protocol, Ciphers. |
| 487 | * |
| 488 | * - Add a Tag directive (idea from David Leonard) ala pf, eg: |
| 489 | * Match Address 192.168.0.* |
| 490 | * Tag trusted |
| 491 | * Match Group wheel |
| 492 | * Tag trusted |
| 493 | * Match Tag trusted |
| 494 | * AllowTcpForwarding yes |
| 495 | * GatewayPorts clientspecified |
| 496 | * [...] |
| 497 | * |
| 498 | * - Add a PermittedChannelRequests directive |
| 499 | * Match Group shell |
| 500 | * PermittedChannelRequests session,forwarded-tcpip |
| 501 | */ |
| 502 | |
| 503 | static int |
Damien Miller | 565ca3f | 2006-08-19 00:23:15 +1000 | [diff] [blame] | 504 | match_cfg_line_group(const char *grps, int line, const char *user) |
| 505 | { |
| 506 | int result = 0; |
| 507 | u_int ngrps = 0; |
| 508 | char *arg, *p, *cp, *grplist[MAX_MATCH_GROUPS]; |
| 509 | struct passwd *pw; |
| 510 | |
| 511 | /* |
| 512 | * Even if we do not have a user yet, we still need to check for |
| 513 | * valid syntax. |
| 514 | */ |
| 515 | arg = cp = xstrdup(grps); |
| 516 | while ((p = strsep(&cp, ",")) != NULL && *p != '\0') { |
| 517 | if (ngrps >= MAX_MATCH_GROUPS) { |
| 518 | error("line %d: too many groups in Match Group", line); |
| 519 | result = -1; |
| 520 | goto out; |
| 521 | } |
| 522 | grplist[ngrps++] = p; |
| 523 | } |
| 524 | |
| 525 | if (user == NULL) |
| 526 | goto out; |
| 527 | |
| 528 | if ((pw = getpwnam(user)) == NULL) { |
| 529 | debug("Can't match group at line %d because user %.100s does " |
| 530 | "not exist", line, user); |
| 531 | } else if (ga_init(pw->pw_name, pw->pw_gid) == 0) { |
| 532 | debug("Can't Match group because user %.100s not in any group " |
| 533 | "at line %d", user, line); |
| 534 | } else if (ga_match(grplist, ngrps) != 1) { |
| 535 | debug("user %.100s does not match group %.100s at line %d", |
| 536 | user, arg, line); |
| 537 | } else { |
| 538 | debug("user %.100s matched group %.100s at line %d", user, |
| 539 | arg, line); |
| 540 | result = 1; |
| 541 | } |
| 542 | out: |
| 543 | ga_free(); |
| 544 | xfree(arg); |
| 545 | return result; |
| 546 | } |
| 547 | |
| 548 | static int |
Darren Tucker | 4515047 | 2006-07-12 22:34:17 +1000 | [diff] [blame] | 549 | match_cfg_line(char **condition, int line, const char *user, const char *host, |
| 550 | const char *address) |
| 551 | { |
| 552 | int result = 1; |
| 553 | char *arg, *attrib, *cp = *condition; |
| 554 | size_t len; |
| 555 | |
| 556 | if (user == NULL) |
| 557 | debug3("checking syntax for 'Match %s'", cp); |
| 558 | else |
| 559 | debug3("checking match for '%s' user %s host %s addr %s", cp, |
| 560 | user ? user : "(null)", host ? host : "(null)", |
| 561 | address ? address : "(null)"); |
| 562 | |
| 563 | while ((attrib = strdelim(&cp)) && *attrib != '\0') { |
| 564 | if ((arg = strdelim(&cp)) == NULL || *arg == '\0') { |
| 565 | error("Missing Match criteria for %s", attrib); |
| 566 | return -1; |
| 567 | } |
| 568 | len = strlen(arg); |
| 569 | if (strcasecmp(attrib, "user") == 0) { |
| 570 | if (!user) { |
| 571 | result = 0; |
| 572 | continue; |
| 573 | } |
| 574 | if (match_pattern_list(user, arg, len, 0) != 1) |
| 575 | result = 0; |
| 576 | else |
| 577 | debug("user %.100s matched 'User %.100s' at " |
| 578 | "line %d", user, arg, line); |
Damien Miller | 565ca3f | 2006-08-19 00:23:15 +1000 | [diff] [blame] | 579 | } else if (strcasecmp(attrib, "group") == 0) { |
| 580 | switch (match_cfg_line_group(arg, line, user)) { |
| 581 | case -1: |
| 582 | return -1; |
| 583 | case 0: |
| 584 | result = 0; |
| 585 | } |
Darren Tucker | 4515047 | 2006-07-12 22:34:17 +1000 | [diff] [blame] | 586 | } else if (strcasecmp(attrib, "host") == 0) { |
| 587 | if (!host) { |
| 588 | result = 0; |
| 589 | continue; |
| 590 | } |
| 591 | if (match_hostname(host, arg, len) != 1) |
| 592 | result = 0; |
| 593 | else |
| 594 | debug("connection from %.100s matched 'Host " |
| 595 | "%.100s' at line %d", host, arg, line); |
| 596 | } else if (strcasecmp(attrib, "address") == 0) { |
Darren Tucker | 4515047 | 2006-07-12 22:34:17 +1000 | [diff] [blame] | 597 | if (!address) { |
| 598 | result = 0; |
| 599 | continue; |
| 600 | } |
| 601 | if (match_hostname(address, arg, len) != 1) |
| 602 | result = 0; |
| 603 | else |
| 604 | debug("connection from %.100s matched 'Address " |
| 605 | "%.100s' at line %d", address, arg, line); |
| 606 | } else { |
| 607 | error("Unsupported Match attribute %s", attrib); |
| 608 | return -1; |
| 609 | } |
| 610 | } |
| 611 | if (user != NULL) |
| 612 | debug3("match %sfound", result ? "" : "not "); |
| 613 | *condition = cp; |
| 614 | return result; |
| 615 | } |
| 616 | |
Damien Miller | e275443 | 2006-07-24 14:06:47 +1000 | [diff] [blame] | 617 | #define WHITESPACE " \t\r\n" |
| 618 | |
Ben Lindstrom | ade03f6 | 2001-12-06 18:22:17 +0000 | [diff] [blame] | 619 | int |
| 620 | process_server_config_line(ServerOptions *options, char *line, |
Darren Tucker | 4515047 | 2006-07-12 22:34:17 +1000 | [diff] [blame] | 621 | const char *filename, int linenum, int *activep, const char *user, |
| 622 | const char *host, const char *address) |
Ben Lindstrom | ade03f6 | 2001-12-06 18:22:17 +0000 | [diff] [blame] | 623 | { |
| 624 | char *cp, **charptr, *arg, *p; |
Darren Tucker | 4515047 | 2006-07-12 22:34:17 +1000 | [diff] [blame] | 625 | int cmdline = 0, *intptr, value, n; |
Darren Tucker | 1e44c5d | 2008-01-01 20:32:26 +1100 | [diff] [blame] | 626 | SyslogFacility *log_facility_ptr; |
| 627 | LogLevel *log_level_ptr; |
Ben Lindstrom | ade03f6 | 2001-12-06 18:22:17 +0000 | [diff] [blame] | 628 | ServerOpCodes opcode; |
Damien Miller | f91ee4c | 2005-03-01 21:24:33 +1100 | [diff] [blame] | 629 | u_short port; |
Darren Tucker | 4515047 | 2006-07-12 22:34:17 +1000 | [diff] [blame] | 630 | u_int i, flags = 0; |
Damien Miller | 917f9b6 | 2006-07-10 20:36:47 +1000 | [diff] [blame] | 631 | size_t len; |
Ben Lindstrom | ade03f6 | 2001-12-06 18:22:17 +0000 | [diff] [blame] | 632 | |
| 633 | cp = line; |
Damien Miller | 78f16cb | 2006-03-26 13:54:37 +1100 | [diff] [blame] | 634 | if ((arg = strdelim(&cp)) == NULL) |
Damien Miller | 928b236 | 2006-03-26 13:53:32 +1100 | [diff] [blame] | 635 | return 0; |
Ben Lindstrom | ade03f6 | 2001-12-06 18:22:17 +0000 | [diff] [blame] | 636 | /* Ignore leading whitespace */ |
| 637 | if (*arg == '\0') |
| 638 | arg = strdelim(&cp); |
| 639 | if (!arg || !*arg || *arg == '#') |
| 640 | return 0; |
| 641 | intptr = NULL; |
| 642 | charptr = NULL; |
Darren Tucker | 4515047 | 2006-07-12 22:34:17 +1000 | [diff] [blame] | 643 | opcode = parse_token(arg, filename, linenum, &flags); |
| 644 | |
| 645 | if (activep == NULL) { /* We are processing a command line directive */ |
| 646 | cmdline = 1; |
| 647 | activep = &cmdline; |
| 648 | } |
| 649 | if (*activep && opcode != sMatch) |
| 650 | debug3("%s:%d setting %s %s", filename, linenum, arg, cp); |
| 651 | if (*activep == 0 && !(flags & SSHCFG_MATCH)) { |
| 652 | if (user == NULL) { |
| 653 | fatal("%s line %d: Directive '%s' is not allowed " |
| 654 | "within a Match block", filename, linenum, arg); |
| 655 | } else { /* this is a directive we have already processed */ |
| 656 | while (arg) |
| 657 | arg = strdelim(&cp); |
| 658 | return 0; |
| 659 | } |
| 660 | } |
| 661 | |
Ben Lindstrom | ade03f6 | 2001-12-06 18:22:17 +0000 | [diff] [blame] | 662 | switch (opcode) { |
| 663 | /* Portable-specific options */ |
Damien Miller | 4e448a3 | 2003-05-14 15:11:48 +1000 | [diff] [blame] | 664 | case sUsePAM: |
| 665 | intptr = &options->use_pam; |
Ben Lindstrom | ade03f6 | 2001-12-06 18:22:17 +0000 | [diff] [blame] | 666 | goto parse_flag; |
| 667 | |
| 668 | /* Standard Options */ |
| 669 | case sBadOption: |
| 670 | return -1; |
| 671 | case sPort: |
| 672 | /* ignore ports from configfile if cmdline specifies ports */ |
| 673 | if (options->ports_from_cmdline) |
| 674 | return 0; |
| 675 | if (options->listen_addrs != NULL) |
| 676 | fatal("%s line %d: ports must be specified before " |
Damien Miller | 4fbf08a | 2002-01-22 23:35:09 +1100 | [diff] [blame] | 677 | "ListenAddress.", filename, linenum); |
Ben Lindstrom | ade03f6 | 2001-12-06 18:22:17 +0000 | [diff] [blame] | 678 | if (options->num_ports >= MAX_PORTS) |
| 679 | fatal("%s line %d: too many ports.", |
| 680 | filename, linenum); |
| 681 | arg = strdelim(&cp); |
| 682 | if (!arg || *arg == '\0') |
| 683 | fatal("%s line %d: missing port number.", |
| 684 | filename, linenum); |
| 685 | options->ports[options->num_ports++] = a2port(arg); |
| 686 | if (options->ports[options->num_ports-1] == 0) |
| 687 | fatal("%s line %d: Badly formatted port number.", |
| 688 | filename, linenum); |
| 689 | break; |
| 690 | |
| 691 | case sServerKeyBits: |
| 692 | intptr = &options->server_key_bits; |
| 693 | parse_int: |
| 694 | arg = strdelim(&cp); |
| 695 | if (!arg || *arg == '\0') |
| 696 | fatal("%s line %d: missing integer value.", |
| 697 | filename, linenum); |
| 698 | value = atoi(arg); |
Darren Tucker | 4515047 | 2006-07-12 22:34:17 +1000 | [diff] [blame] | 699 | if (*activep && *intptr == -1) |
Ben Lindstrom | ade03f6 | 2001-12-06 18:22:17 +0000 | [diff] [blame] | 700 | *intptr = value; |
| 701 | break; |
| 702 | |
| 703 | case sLoginGraceTime: |
| 704 | intptr = &options->login_grace_time; |
| 705 | parse_time: |
| 706 | arg = strdelim(&cp); |
| 707 | if (!arg || *arg == '\0') |
| 708 | fatal("%s line %d: missing time value.", |
| 709 | filename, linenum); |
| 710 | if ((value = convtime(arg)) == -1) |
| 711 | fatal("%s line %d: invalid time value.", |
| 712 | filename, linenum); |
| 713 | if (*intptr == -1) |
| 714 | *intptr = value; |
| 715 | break; |
| 716 | |
| 717 | case sKeyRegenerationTime: |
| 718 | intptr = &options->key_regeneration_time; |
| 719 | goto parse_time; |
| 720 | |
| 721 | case sListenAddress: |
| 722 | arg = strdelim(&cp); |
Damien Miller | f91ee4c | 2005-03-01 21:24:33 +1100 | [diff] [blame] | 723 | if (arg == NULL || *arg == '\0') |
| 724 | fatal("%s line %d: missing address", |
Ben Lindstrom | ade03f6 | 2001-12-06 18:22:17 +0000 | [diff] [blame] | 725 | filename, linenum); |
Damien Miller | 203c705 | 2005-08-12 22:11:37 +1000 | [diff] [blame] | 726 | /* check for bare IPv6 address: no "[]" and 2 or more ":" */ |
| 727 | if (strchr(arg, '[') == NULL && (p = strchr(arg, ':')) != NULL |
| 728 | && strchr(p+1, ':') != NULL) { |
| 729 | add_listen_addr(options, arg, 0); |
| 730 | break; |
| 731 | } |
Damien Miller | f91ee4c | 2005-03-01 21:24:33 +1100 | [diff] [blame] | 732 | p = hpdelim(&arg); |
| 733 | if (p == NULL) |
| 734 | fatal("%s line %d: bad address:port usage", |
| 735 | filename, linenum); |
| 736 | p = cleanhostname(p); |
| 737 | if (arg == NULL) |
| 738 | port = 0; |
| 739 | else if ((port = a2port(arg)) == 0) |
| 740 | fatal("%s line %d: bad port number", filename, linenum); |
Ben Lindstrom | ade03f6 | 2001-12-06 18:22:17 +0000 | [diff] [blame] | 741 | |
Damien Miller | f91ee4c | 2005-03-01 21:24:33 +1100 | [diff] [blame] | 742 | add_listen_addr(options, p, port); |
| 743 | |
Ben Lindstrom | ade03f6 | 2001-12-06 18:22:17 +0000 | [diff] [blame] | 744 | break; |
| 745 | |
Darren Tucker | 0f38323 | 2005-01-20 10:57:56 +1100 | [diff] [blame] | 746 | case sAddressFamily: |
| 747 | arg = strdelim(&cp); |
Damien Miller | 17b23d8 | 2005-05-26 12:11:56 +1000 | [diff] [blame] | 748 | if (!arg || *arg == '\0') |
| 749 | fatal("%s line %d: missing address family.", |
| 750 | filename, linenum); |
Darren Tucker | 0f38323 | 2005-01-20 10:57:56 +1100 | [diff] [blame] | 751 | intptr = &options->address_family; |
| 752 | if (options->listen_addrs != NULL) |
| 753 | fatal("%s line %d: address family must be specified before " |
| 754 | "ListenAddress.", filename, linenum); |
| 755 | if (strcasecmp(arg, "inet") == 0) |
| 756 | value = AF_INET; |
| 757 | else if (strcasecmp(arg, "inet6") == 0) |
| 758 | value = AF_INET6; |
| 759 | else if (strcasecmp(arg, "any") == 0) |
| 760 | value = AF_UNSPEC; |
| 761 | else |
| 762 | fatal("%s line %d: unsupported address family \"%s\".", |
| 763 | filename, linenum, arg); |
| 764 | if (*intptr == -1) |
| 765 | *intptr = value; |
| 766 | break; |
| 767 | |
Ben Lindstrom | ade03f6 | 2001-12-06 18:22:17 +0000 | [diff] [blame] | 768 | case sHostKeyFile: |
| 769 | intptr = &options->num_host_key_files; |
| 770 | if (*intptr >= MAX_HOSTKEYS) |
| 771 | fatal("%s line %d: too many host keys specified (max %d).", |
| 772 | filename, linenum, MAX_HOSTKEYS); |
| 773 | charptr = &options->host_key_files[*intptr]; |
| 774 | parse_filename: |
| 775 | arg = strdelim(&cp); |
| 776 | if (!arg || *arg == '\0') |
| 777 | fatal("%s line %d: missing file name.", |
| 778 | filename, linenum); |
Darren Tucker | 4515047 | 2006-07-12 22:34:17 +1000 | [diff] [blame] | 779 | if (*activep && *charptr == NULL) { |
Ben Lindstrom | ade03f6 | 2001-12-06 18:22:17 +0000 | [diff] [blame] | 780 | *charptr = tilde_expand_filename(arg, getuid()); |
| 781 | /* increase optional counter */ |
| 782 | if (intptr != NULL) |
| 783 | *intptr = *intptr + 1; |
| 784 | } |
| 785 | break; |
| 786 | |
| 787 | case sPidFile: |
| 788 | charptr = &options->pid_file; |
| 789 | goto parse_filename; |
| 790 | |
| 791 | case sPermitRootLogin: |
| 792 | intptr = &options->permit_root_login; |
| 793 | arg = strdelim(&cp); |
| 794 | if (!arg || *arg == '\0') |
| 795 | fatal("%s line %d: missing yes/" |
| 796 | "without-password/forced-commands-only/no " |
| 797 | "argument.", filename, linenum); |
| 798 | value = 0; /* silence compiler */ |
| 799 | if (strcmp(arg, "without-password") == 0) |
| 800 | value = PERMIT_NO_PASSWD; |
| 801 | else if (strcmp(arg, "forced-commands-only") == 0) |
| 802 | value = PERMIT_FORCED_ONLY; |
| 803 | else if (strcmp(arg, "yes") == 0) |
| 804 | value = PERMIT_YES; |
| 805 | else if (strcmp(arg, "no") == 0) |
| 806 | value = PERMIT_NO; |
| 807 | else |
| 808 | fatal("%s line %d: Bad yes/" |
| 809 | "without-password/forced-commands-only/no " |
| 810 | "argument: %s", filename, linenum, arg); |
Darren Tucker | 15f9427 | 2008-01-01 20:36:56 +1100 | [diff] [blame] | 811 | if (*activep && *intptr == -1) |
Ben Lindstrom | ade03f6 | 2001-12-06 18:22:17 +0000 | [diff] [blame] | 812 | *intptr = value; |
| 813 | break; |
| 814 | |
| 815 | case sIgnoreRhosts: |
| 816 | intptr = &options->ignore_rhosts; |
| 817 | parse_flag: |
| 818 | arg = strdelim(&cp); |
| 819 | if (!arg || *arg == '\0') |
| 820 | fatal("%s line %d: missing yes/no argument.", |
| 821 | filename, linenum); |
| 822 | value = 0; /* silence compiler */ |
| 823 | if (strcmp(arg, "yes") == 0) |
| 824 | value = 1; |
| 825 | else if (strcmp(arg, "no") == 0) |
| 826 | value = 0; |
| 827 | else |
| 828 | fatal("%s line %d: Bad yes/no argument: %s", |
| 829 | filename, linenum, arg); |
Darren Tucker | 4515047 | 2006-07-12 22:34:17 +1000 | [diff] [blame] | 830 | if (*activep && *intptr == -1) |
Ben Lindstrom | ade03f6 | 2001-12-06 18:22:17 +0000 | [diff] [blame] | 831 | *intptr = value; |
| 832 | break; |
| 833 | |
| 834 | case sIgnoreUserKnownHosts: |
| 835 | intptr = &options->ignore_user_known_hosts; |
| 836 | goto parse_flag; |
| 837 | |
Ben Lindstrom | ade03f6 | 2001-12-06 18:22:17 +0000 | [diff] [blame] | 838 | case sRhostsRSAAuthentication: |
| 839 | intptr = &options->rhosts_rsa_authentication; |
| 840 | goto parse_flag; |
| 841 | |
| 842 | case sHostbasedAuthentication: |
| 843 | intptr = &options->hostbased_authentication; |
| 844 | goto parse_flag; |
| 845 | |
| 846 | case sHostbasedUsesNameFromPacketOnly: |
| 847 | intptr = &options->hostbased_uses_name_from_packet_only; |
| 848 | goto parse_flag; |
| 849 | |
| 850 | case sRSAAuthentication: |
| 851 | intptr = &options->rsa_authentication; |
| 852 | goto parse_flag; |
| 853 | |
| 854 | case sPubkeyAuthentication: |
| 855 | intptr = &options->pubkey_authentication; |
| 856 | goto parse_flag; |
Damien Miller | 2aa0ab4 | 2003-05-15 12:05:28 +1000 | [diff] [blame] | 857 | |
Ben Lindstrom | ade03f6 | 2001-12-06 18:22:17 +0000 | [diff] [blame] | 858 | case sKerberosAuthentication: |
| 859 | intptr = &options->kerberos_authentication; |
| 860 | goto parse_flag; |
| 861 | |
| 862 | case sKerberosOrLocalPasswd: |
| 863 | intptr = &options->kerberos_or_local_passwd; |
| 864 | goto parse_flag; |
| 865 | |
| 866 | case sKerberosTicketCleanup: |
| 867 | intptr = &options->kerberos_ticket_cleanup; |
| 868 | goto parse_flag; |
Damien Miller | 2aa0ab4 | 2003-05-15 12:05:28 +1000 | [diff] [blame] | 869 | |
Darren Tucker | 22ef508 | 2003-12-31 11:37:34 +1100 | [diff] [blame] | 870 | case sKerberosGetAFSToken: |
| 871 | intptr = &options->kerberos_get_afs_token; |
| 872 | goto parse_flag; |
| 873 | |
Darren Tucker | 0efd155 | 2003-08-26 11:49:55 +1000 | [diff] [blame] | 874 | case sGssAuthentication: |
| 875 | intptr = &options->gss_authentication; |
| 876 | goto parse_flag; |
| 877 | |
| 878 | case sGssCleanupCreds: |
| 879 | intptr = &options->gss_cleanup_creds; |
| 880 | goto parse_flag; |
| 881 | |
Ben Lindstrom | ade03f6 | 2001-12-06 18:22:17 +0000 | [diff] [blame] | 882 | case sPasswordAuthentication: |
| 883 | intptr = &options->password_authentication; |
| 884 | goto parse_flag; |
| 885 | |
| 886 | case sKbdInteractiveAuthentication: |
| 887 | intptr = &options->kbd_interactive_authentication; |
| 888 | goto parse_flag; |
| 889 | |
| 890 | case sChallengeResponseAuthentication: |
| 891 | intptr = &options->challenge_response_authentication; |
| 892 | goto parse_flag; |
| 893 | |
| 894 | case sPrintMotd: |
| 895 | intptr = &options->print_motd; |
| 896 | goto parse_flag; |
| 897 | |
| 898 | case sPrintLastLog: |
| 899 | intptr = &options->print_lastlog; |
| 900 | goto parse_flag; |
| 901 | |
| 902 | case sX11Forwarding: |
| 903 | intptr = &options->x11_forwarding; |
| 904 | goto parse_flag; |
| 905 | |
| 906 | case sX11DisplayOffset: |
| 907 | intptr = &options->x11_display_offset; |
| 908 | goto parse_int; |
| 909 | |
Damien Miller | 95c249f | 2002-02-05 12:11:34 +1100 | [diff] [blame] | 910 | case sX11UseLocalhost: |
| 911 | intptr = &options->x11_use_localhost; |
| 912 | goto parse_flag; |
| 913 | |
Ben Lindstrom | ade03f6 | 2001-12-06 18:22:17 +0000 | [diff] [blame] | 914 | case sXAuthLocation: |
| 915 | charptr = &options->xauth_location; |
| 916 | goto parse_filename; |
| 917 | |
| 918 | case sStrictModes: |
| 919 | intptr = &options->strict_modes; |
| 920 | goto parse_flag; |
| 921 | |
Damien Miller | 12c150e | 2003-12-17 16:31:10 +1100 | [diff] [blame] | 922 | case sTCPKeepAlive: |
| 923 | intptr = &options->tcp_keep_alive; |
Ben Lindstrom | ade03f6 | 2001-12-06 18:22:17 +0000 | [diff] [blame] | 924 | goto parse_flag; |
| 925 | |
| 926 | case sEmptyPasswd: |
| 927 | intptr = &options->permit_empty_passwd; |
| 928 | goto parse_flag; |
| 929 | |
Ben Lindstrom | 5d860f0 | 2002-08-01 01:28:38 +0000 | [diff] [blame] | 930 | case sPermitUserEnvironment: |
| 931 | intptr = &options->permit_user_env; |
| 932 | goto parse_flag; |
| 933 | |
Ben Lindstrom | ade03f6 | 2001-12-06 18:22:17 +0000 | [diff] [blame] | 934 | case sUseLogin: |
| 935 | intptr = &options->use_login; |
| 936 | goto parse_flag; |
| 937 | |
Ben Lindstrom | 23e0f66 | 2002-06-21 01:09:47 +0000 | [diff] [blame] | 938 | case sCompression: |
| 939 | intptr = &options->compression; |
Damien Miller | 9786e6e | 2005-07-26 21:54:56 +1000 | [diff] [blame] | 940 | arg = strdelim(&cp); |
| 941 | if (!arg || *arg == '\0') |
| 942 | fatal("%s line %d: missing yes/no/delayed " |
| 943 | "argument.", filename, linenum); |
| 944 | value = 0; /* silence compiler */ |
| 945 | if (strcmp(arg, "delayed") == 0) |
| 946 | value = COMP_DELAYED; |
| 947 | else if (strcmp(arg, "yes") == 0) |
| 948 | value = COMP_ZLIB; |
| 949 | else if (strcmp(arg, "no") == 0) |
| 950 | value = COMP_NONE; |
| 951 | else |
| 952 | fatal("%s line %d: Bad yes/no/delayed " |
| 953 | "argument: %s", filename, linenum, arg); |
| 954 | if (*intptr == -1) |
| 955 | *intptr = value; |
| 956 | break; |
Ben Lindstrom | 23e0f66 | 2002-06-21 01:09:47 +0000 | [diff] [blame] | 957 | |
Ben Lindstrom | ade03f6 | 2001-12-06 18:22:17 +0000 | [diff] [blame] | 958 | case sGatewayPorts: |
| 959 | intptr = &options->gateway_ports; |
Damien Miller | f91ee4c | 2005-03-01 21:24:33 +1100 | [diff] [blame] | 960 | arg = strdelim(&cp); |
| 961 | if (!arg || *arg == '\0') |
| 962 | fatal("%s line %d: missing yes/no/clientspecified " |
| 963 | "argument.", filename, linenum); |
| 964 | value = 0; /* silence compiler */ |
| 965 | if (strcmp(arg, "clientspecified") == 0) |
| 966 | value = 2; |
| 967 | else if (strcmp(arg, "yes") == 0) |
| 968 | value = 1; |
| 969 | else if (strcmp(arg, "no") == 0) |
| 970 | value = 0; |
| 971 | else |
| 972 | fatal("%s line %d: Bad yes/no/clientspecified " |
| 973 | "argument: %s", filename, linenum, arg); |
Darren Tucker | 82347a8 | 2007-02-25 20:37:52 +1100 | [diff] [blame] | 974 | if (*activep && *intptr == -1) |
Damien Miller | f91ee4c | 2005-03-01 21:24:33 +1100 | [diff] [blame] | 975 | *intptr = value; |
| 976 | break; |
Ben Lindstrom | ade03f6 | 2001-12-06 18:22:17 +0000 | [diff] [blame] | 977 | |
Damien Miller | 3a961dc | 2003-06-03 10:25:48 +1000 | [diff] [blame] | 978 | case sUseDNS: |
| 979 | intptr = &options->use_dns; |
Ben Lindstrom | ade03f6 | 2001-12-06 18:22:17 +0000 | [diff] [blame] | 980 | goto parse_flag; |
| 981 | |
| 982 | case sLogFacility: |
Darren Tucker | 1e44c5d | 2008-01-01 20:32:26 +1100 | [diff] [blame] | 983 | log_facility_ptr = &options->log_facility; |
Ben Lindstrom | ade03f6 | 2001-12-06 18:22:17 +0000 | [diff] [blame] | 984 | arg = strdelim(&cp); |
| 985 | value = log_facility_number(arg); |
Damien Miller | fcd9320 | 2002-02-05 12:26:34 +1100 | [diff] [blame] | 986 | if (value == SYSLOG_FACILITY_NOT_SET) |
Ben Lindstrom | ade03f6 | 2001-12-06 18:22:17 +0000 | [diff] [blame] | 987 | fatal("%.200s line %d: unsupported log facility '%s'", |
| 988 | filename, linenum, arg ? arg : "<NONE>"); |
Darren Tucker | 1e44c5d | 2008-01-01 20:32:26 +1100 | [diff] [blame] | 989 | if (*log_facility_ptr == -1) |
| 990 | *log_facility_ptr = (SyslogFacility) value; |
Ben Lindstrom | ade03f6 | 2001-12-06 18:22:17 +0000 | [diff] [blame] | 991 | break; |
| 992 | |
| 993 | case sLogLevel: |
Darren Tucker | 1e44c5d | 2008-01-01 20:32:26 +1100 | [diff] [blame] | 994 | log_level_ptr = &options->log_level; |
Ben Lindstrom | ade03f6 | 2001-12-06 18:22:17 +0000 | [diff] [blame] | 995 | arg = strdelim(&cp); |
| 996 | value = log_level_number(arg); |
Damien Miller | fcd9320 | 2002-02-05 12:26:34 +1100 | [diff] [blame] | 997 | if (value == SYSLOG_LEVEL_NOT_SET) |
Ben Lindstrom | ade03f6 | 2001-12-06 18:22:17 +0000 | [diff] [blame] | 998 | fatal("%.200s line %d: unsupported log level '%s'", |
| 999 | filename, linenum, arg ? arg : "<NONE>"); |
Darren Tucker | 1e44c5d | 2008-01-01 20:32:26 +1100 | [diff] [blame] | 1000 | if (*log_level_ptr == -1) |
| 1001 | *log_level_ptr = (LogLevel) value; |
Ben Lindstrom | ade03f6 | 2001-12-06 18:22:17 +0000 | [diff] [blame] | 1002 | break; |
| 1003 | |
| 1004 | case sAllowTcpForwarding: |
| 1005 | intptr = &options->allow_tcp_forwarding; |
| 1006 | goto parse_flag; |
| 1007 | |
Ben Lindstrom | 7a2073c | 2002-03-22 02:30:41 +0000 | [diff] [blame] | 1008 | case sUsePrivilegeSeparation: |
| 1009 | intptr = &use_privsep; |
| 1010 | goto parse_flag; |
| 1011 | |
Ben Lindstrom | ade03f6 | 2001-12-06 18:22:17 +0000 | [diff] [blame] | 1012 | case sAllowUsers: |
| 1013 | while ((arg = strdelim(&cp)) && *arg != '\0') { |
| 1014 | if (options->num_allow_users >= MAX_ALLOW_USERS) |
| 1015 | fatal("%s line %d: too many allow users.", |
| 1016 | filename, linenum); |
Ben Lindstrom | e135363 | 2002-06-23 21:29:23 +0000 | [diff] [blame] | 1017 | options->allow_users[options->num_allow_users++] = |
| 1018 | xstrdup(arg); |
Ben Lindstrom | ade03f6 | 2001-12-06 18:22:17 +0000 | [diff] [blame] | 1019 | } |
| 1020 | break; |
| 1021 | |
| 1022 | case sDenyUsers: |
| 1023 | while ((arg = strdelim(&cp)) && *arg != '\0') { |
| 1024 | if (options->num_deny_users >= MAX_DENY_USERS) |
Damien Miller | 4dec5d7 | 2006-08-05 11:38:40 +1000 | [diff] [blame] | 1025 | fatal("%s line %d: too many deny users.", |
Ben Lindstrom | ade03f6 | 2001-12-06 18:22:17 +0000 | [diff] [blame] | 1026 | filename, linenum); |
Ben Lindstrom | e135363 | 2002-06-23 21:29:23 +0000 | [diff] [blame] | 1027 | options->deny_users[options->num_deny_users++] = |
| 1028 | xstrdup(arg); |
Ben Lindstrom | ade03f6 | 2001-12-06 18:22:17 +0000 | [diff] [blame] | 1029 | } |
| 1030 | break; |
| 1031 | |
| 1032 | case sAllowGroups: |
| 1033 | while ((arg = strdelim(&cp)) && *arg != '\0') { |
| 1034 | if (options->num_allow_groups >= MAX_ALLOW_GROUPS) |
| 1035 | fatal("%s line %d: too many allow groups.", |
| 1036 | filename, linenum); |
Ben Lindstrom | e135363 | 2002-06-23 21:29:23 +0000 | [diff] [blame] | 1037 | options->allow_groups[options->num_allow_groups++] = |
| 1038 | xstrdup(arg); |
Ben Lindstrom | ade03f6 | 2001-12-06 18:22:17 +0000 | [diff] [blame] | 1039 | } |
| 1040 | break; |
| 1041 | |
| 1042 | case sDenyGroups: |
| 1043 | while ((arg = strdelim(&cp)) && *arg != '\0') { |
| 1044 | if (options->num_deny_groups >= MAX_DENY_GROUPS) |
| 1045 | fatal("%s line %d: too many deny groups.", |
| 1046 | filename, linenum); |
| 1047 | options->deny_groups[options->num_deny_groups++] = xstrdup(arg); |
| 1048 | } |
| 1049 | break; |
| 1050 | |
| 1051 | case sCiphers: |
| 1052 | arg = strdelim(&cp); |
| 1053 | if (!arg || *arg == '\0') |
| 1054 | fatal("%s line %d: Missing argument.", filename, linenum); |
| 1055 | if (!ciphers_valid(arg)) |
| 1056 | fatal("%s line %d: Bad SSH2 cipher spec '%s'.", |
| 1057 | filename, linenum, arg ? arg : "<NONE>"); |
| 1058 | if (options->ciphers == NULL) |
| 1059 | options->ciphers = xstrdup(arg); |
| 1060 | break; |
| 1061 | |
| 1062 | case sMacs: |
| 1063 | arg = strdelim(&cp); |
| 1064 | if (!arg || *arg == '\0') |
| 1065 | fatal("%s line %d: Missing argument.", filename, linenum); |
| 1066 | if (!mac_valid(arg)) |
| 1067 | fatal("%s line %d: Bad SSH2 mac spec '%s'.", |
| 1068 | filename, linenum, arg ? arg : "<NONE>"); |
| 1069 | if (options->macs == NULL) |
| 1070 | options->macs = xstrdup(arg); |
| 1071 | break; |
| 1072 | |
| 1073 | case sProtocol: |
| 1074 | intptr = &options->protocol; |
| 1075 | arg = strdelim(&cp); |
| 1076 | if (!arg || *arg == '\0') |
| 1077 | fatal("%s line %d: Missing argument.", filename, linenum); |
| 1078 | value = proto_spec(arg); |
| 1079 | if (value == SSH_PROTO_UNKNOWN) |
| 1080 | fatal("%s line %d: Bad protocol spec '%s'.", |
Damien Miller | 9f0f5c6 | 2001-12-21 14:45:46 +1100 | [diff] [blame] | 1081 | filename, linenum, arg ? arg : "<NONE>"); |
Ben Lindstrom | ade03f6 | 2001-12-06 18:22:17 +0000 | [diff] [blame] | 1082 | if (*intptr == SSH_PROTO_UNKNOWN) |
| 1083 | *intptr = value; |
| 1084 | break; |
| 1085 | |
| 1086 | case sSubsystem: |
| 1087 | if (options->num_subsystems >= MAX_SUBSYSTEMS) { |
| 1088 | fatal("%s line %d: too many subsystems defined.", |
Damien Miller | 9f0f5c6 | 2001-12-21 14:45:46 +1100 | [diff] [blame] | 1089 | filename, linenum); |
Ben Lindstrom | ade03f6 | 2001-12-06 18:22:17 +0000 | [diff] [blame] | 1090 | } |
| 1091 | arg = strdelim(&cp); |
| 1092 | if (!arg || *arg == '\0') |
| 1093 | fatal("%s line %d: Missing subsystem name.", |
Damien Miller | 9f0f5c6 | 2001-12-21 14:45:46 +1100 | [diff] [blame] | 1094 | filename, linenum); |
Darren Tucker | 4515047 | 2006-07-12 22:34:17 +1000 | [diff] [blame] | 1095 | if (!*activep) { |
| 1096 | arg = strdelim(&cp); |
| 1097 | break; |
| 1098 | } |
Ben Lindstrom | ade03f6 | 2001-12-06 18:22:17 +0000 | [diff] [blame] | 1099 | for (i = 0; i < options->num_subsystems; i++) |
| 1100 | if (strcmp(arg, options->subsystem_name[i]) == 0) |
| 1101 | fatal("%s line %d: Subsystem '%s' already defined.", |
Damien Miller | 9f0f5c6 | 2001-12-21 14:45:46 +1100 | [diff] [blame] | 1102 | filename, linenum, arg); |
Ben Lindstrom | ade03f6 | 2001-12-06 18:22:17 +0000 | [diff] [blame] | 1103 | options->subsystem_name[options->num_subsystems] = xstrdup(arg); |
| 1104 | arg = strdelim(&cp); |
| 1105 | if (!arg || *arg == '\0') |
| 1106 | fatal("%s line %d: Missing subsystem command.", |
Damien Miller | 9f0f5c6 | 2001-12-21 14:45:46 +1100 | [diff] [blame] | 1107 | filename, linenum); |
Ben Lindstrom | ade03f6 | 2001-12-06 18:22:17 +0000 | [diff] [blame] | 1108 | options->subsystem_command[options->num_subsystems] = xstrdup(arg); |
Damien Miller | 917f9b6 | 2006-07-10 20:36:47 +1000 | [diff] [blame] | 1109 | |
| 1110 | /* Collect arguments (separate to executable) */ |
| 1111 | p = xstrdup(arg); |
| 1112 | len = strlen(p) + 1; |
| 1113 | while ((arg = strdelim(&cp)) != NULL && *arg != '\0') { |
| 1114 | len += 1 + strlen(arg); |
| 1115 | p = xrealloc(p, 1, len); |
| 1116 | strlcat(p, " ", len); |
| 1117 | strlcat(p, arg, len); |
| 1118 | } |
| 1119 | options->subsystem_args[options->num_subsystems] = p; |
Ben Lindstrom | ade03f6 | 2001-12-06 18:22:17 +0000 | [diff] [blame] | 1120 | options->num_subsystems++; |
| 1121 | break; |
| 1122 | |
| 1123 | case sMaxStartups: |
| 1124 | arg = strdelim(&cp); |
| 1125 | if (!arg || *arg == '\0') |
| 1126 | fatal("%s line %d: Missing MaxStartups spec.", |
Damien Miller | 9f0f5c6 | 2001-12-21 14:45:46 +1100 | [diff] [blame] | 1127 | filename, linenum); |
Ben Lindstrom | ade03f6 | 2001-12-06 18:22:17 +0000 | [diff] [blame] | 1128 | if ((n = sscanf(arg, "%d:%d:%d", |
| 1129 | &options->max_startups_begin, |
| 1130 | &options->max_startups_rate, |
| 1131 | &options->max_startups)) == 3) { |
| 1132 | if (options->max_startups_begin > |
| 1133 | options->max_startups || |
| 1134 | options->max_startups_rate > 100 || |
| 1135 | options->max_startups_rate < 1) |
| 1136 | fatal("%s line %d: Illegal MaxStartups spec.", |
| 1137 | filename, linenum); |
| 1138 | } else if (n != 1) |
| 1139 | fatal("%s line %d: Illegal MaxStartups spec.", |
| 1140 | filename, linenum); |
| 1141 | else |
| 1142 | options->max_startups = options->max_startups_begin; |
| 1143 | break; |
| 1144 | |
Darren Tucker | 89413db | 2004-05-24 10:36:23 +1000 | [diff] [blame] | 1145 | case sMaxAuthTries: |
| 1146 | intptr = &options->max_authtries; |
| 1147 | goto parse_int; |
| 1148 | |
Ben Lindstrom | ade03f6 | 2001-12-06 18:22:17 +0000 | [diff] [blame] | 1149 | case sBanner: |
| 1150 | charptr = &options->banner; |
| 1151 | goto parse_filename; |
Damien Miller | d8cb1f1 | 2008-02-10 22:40:12 +1100 | [diff] [blame] | 1152 | |
Ben Lindstrom | ade03f6 | 2001-12-06 18:22:17 +0000 | [diff] [blame] | 1153 | /* |
| 1154 | * These options can contain %X options expanded at |
| 1155 | * connect time, so that you can specify paths like: |
| 1156 | * |
| 1157 | * AuthorizedKeysFile /etc/ssh_keys/%u |
| 1158 | */ |
| 1159 | case sAuthorizedKeysFile: |
| 1160 | case sAuthorizedKeysFile2: |
Damien Miller | 4dec5d7 | 2006-08-05 11:38:40 +1000 | [diff] [blame] | 1161 | charptr = (opcode == sAuthorizedKeysFile) ? |
Ben Lindstrom | ade03f6 | 2001-12-06 18:22:17 +0000 | [diff] [blame] | 1162 | &options->authorized_keys_file : |
| 1163 | &options->authorized_keys_file2; |
| 1164 | goto parse_filename; |
| 1165 | |
| 1166 | case sClientAliveInterval: |
| 1167 | intptr = &options->client_alive_interval; |
| 1168 | goto parse_time; |
| 1169 | |
| 1170 | case sClientAliveCountMax: |
| 1171 | intptr = &options->client_alive_count_max; |
| 1172 | goto parse_int; |
| 1173 | |
Darren Tucker | 46bc075 | 2004-05-02 22:11:30 +1000 | [diff] [blame] | 1174 | case sAcceptEnv: |
| 1175 | while ((arg = strdelim(&cp)) && *arg != '\0') { |
| 1176 | if (strchr(arg, '=') != NULL) |
| 1177 | fatal("%s line %d: Invalid environment name.", |
| 1178 | filename, linenum); |
| 1179 | if (options->num_accept_env >= MAX_ACCEPT_ENV) |
| 1180 | fatal("%s line %d: too many allow env.", |
| 1181 | filename, linenum); |
Darren Tucker | 4515047 | 2006-07-12 22:34:17 +1000 | [diff] [blame] | 1182 | if (!*activep) |
| 1183 | break; |
Darren Tucker | 46bc075 | 2004-05-02 22:11:30 +1000 | [diff] [blame] | 1184 | options->accept_env[options->num_accept_env++] = |
| 1185 | xstrdup(arg); |
| 1186 | } |
| 1187 | break; |
| 1188 | |
Damien Miller | d27b947 | 2005-12-13 19:29:02 +1100 | [diff] [blame] | 1189 | case sPermitTunnel: |
| 1190 | intptr = &options->permit_tun; |
Damien Miller | 7b58e80 | 2005-12-13 19:33:19 +1100 | [diff] [blame] | 1191 | arg = strdelim(&cp); |
| 1192 | if (!arg || *arg == '\0') |
| 1193 | fatal("%s line %d: Missing yes/point-to-point/" |
| 1194 | "ethernet/no argument.", filename, linenum); |
| 1195 | value = 0; /* silence compiler */ |
| 1196 | if (strcasecmp(arg, "ethernet") == 0) |
| 1197 | value = SSH_TUNMODE_ETHERNET; |
| 1198 | else if (strcasecmp(arg, "point-to-point") == 0) |
| 1199 | value = SSH_TUNMODE_POINTOPOINT; |
| 1200 | else if (strcasecmp(arg, "yes") == 0) |
| 1201 | value = SSH_TUNMODE_YES; |
| 1202 | else if (strcasecmp(arg, "no") == 0) |
| 1203 | value = SSH_TUNMODE_NO; |
| 1204 | else |
| 1205 | fatal("%s line %d: Bad yes/point-to-point/ethernet/" |
| 1206 | "no argument: %s", filename, linenum, arg); |
| 1207 | if (*intptr == -1) |
| 1208 | *intptr = value; |
| 1209 | break; |
Damien Miller | d27b947 | 2005-12-13 19:29:02 +1100 | [diff] [blame] | 1210 | |
Darren Tucker | 4515047 | 2006-07-12 22:34:17 +1000 | [diff] [blame] | 1211 | case sMatch: |
| 1212 | if (cmdline) |
| 1213 | fatal("Match directive not supported as a command-line " |
| 1214 | "option"); |
| 1215 | value = match_cfg_line(&cp, linenum, user, host, address); |
| 1216 | if (value < 0) |
| 1217 | fatal("%s line %d: Bad Match condition", filename, |
| 1218 | linenum); |
| 1219 | *activep = value; |
| 1220 | break; |
| 1221 | |
Damien Miller | 9b439df | 2006-07-24 14:04:00 +1000 | [diff] [blame] | 1222 | case sPermitOpen: |
| 1223 | arg = strdelim(&cp); |
| 1224 | if (!arg || *arg == '\0') |
| 1225 | fatal("%s line %d: missing PermitOpen specification", |
| 1226 | filename, linenum); |
Damien Miller | 9fc6a56 | 2007-01-05 16:29:02 +1100 | [diff] [blame] | 1227 | n = options->num_permitted_opens; /* modified later */ |
Damien Miller | 9b439df | 2006-07-24 14:04:00 +1000 | [diff] [blame] | 1228 | if (strcmp(arg, "any") == 0) { |
Damien Miller | 9fc6a56 | 2007-01-05 16:29:02 +1100 | [diff] [blame] | 1229 | if (*activep && n == -1) { |
Damien Miller | 9b439df | 2006-07-24 14:04:00 +1000 | [diff] [blame] | 1230 | channel_clear_adm_permitted_opens(); |
Damien Miller | a765cf4 | 2006-07-24 14:08:13 +1000 | [diff] [blame] | 1231 | options->num_permitted_opens = 0; |
| 1232 | } |
Damien Miller | 9b439df | 2006-07-24 14:04:00 +1000 | [diff] [blame] | 1233 | break; |
| 1234 | } |
Damien Miller | a29b95e | 2007-01-05 16:28:36 +1100 | [diff] [blame] | 1235 | if (*activep && n == -1) |
| 1236 | channel_clear_adm_permitted_opens(); |
Damien Miller | a765cf4 | 2006-07-24 14:08:13 +1000 | [diff] [blame] | 1237 | for (; arg != NULL && *arg != '\0'; arg = strdelim(&cp)) { |
| 1238 | p = hpdelim(&arg); |
| 1239 | if (p == NULL) |
| 1240 | fatal("%s line %d: missing host in PermitOpen", |
| 1241 | filename, linenum); |
| 1242 | p = cleanhostname(p); |
| 1243 | if (arg == NULL || (port = a2port(arg)) == 0) |
| 1244 | fatal("%s line %d: bad port number in " |
| 1245 | "PermitOpen", filename, linenum); |
Damien Miller | a29b95e | 2007-01-05 16:28:36 +1100 | [diff] [blame] | 1246 | if (*activep && n == -1) |
Damien Miller | a765cf4 | 2006-07-24 14:08:13 +1000 | [diff] [blame] | 1247 | options->num_permitted_opens = |
| 1248 | channel_add_adm_permitted_opens(p, port); |
Damien Miller | a765cf4 | 2006-07-24 14:08:13 +1000 | [diff] [blame] | 1249 | } |
Damien Miller | 9b439df | 2006-07-24 14:04:00 +1000 | [diff] [blame] | 1250 | break; |
| 1251 | |
Damien Miller | e275443 | 2006-07-24 14:06:47 +1000 | [diff] [blame] | 1252 | case sForceCommand: |
| 1253 | if (cp == NULL) |
| 1254 | fatal("%.200s line %d: Missing argument.", filename, |
| 1255 | linenum); |
| 1256 | len = strspn(cp, WHITESPACE); |
| 1257 | if (*activep && options->adm_forced_command == NULL) |
| 1258 | options->adm_forced_command = xstrdup(cp + len); |
| 1259 | return 0; |
| 1260 | |
Damien Miller | d8cb1f1 | 2008-02-10 22:40:12 +1100 | [diff] [blame] | 1261 | case sChrootDirectory: |
| 1262 | charptr = &options->chroot_directory; |
Damien Miller | 54e3773 | 2008-02-10 22:48:55 +1100 | [diff] [blame^] | 1263 | |
| 1264 | arg = strdelim(&cp); |
| 1265 | if (!arg || *arg == '\0') |
| 1266 | fatal("%s line %d: missing file name.", |
| 1267 | filename, linenum); |
| 1268 | if (*activep && *charptr == NULL) |
| 1269 | *charptr = xstrdup(arg); |
| 1270 | break; |
Damien Miller | d8cb1f1 | 2008-02-10 22:40:12 +1100 | [diff] [blame] | 1271 | |
Ben Lindstrom | ade03f6 | 2001-12-06 18:22:17 +0000 | [diff] [blame] | 1272 | case sDeprecated: |
Damien Miller | 996acd2 | 2003-04-09 20:59:48 +1000 | [diff] [blame] | 1273 | logit("%s line %d: Deprecated option %s", |
Ben Lindstrom | ade03f6 | 2001-12-06 18:22:17 +0000 | [diff] [blame] | 1274 | filename, linenum, arg); |
| 1275 | while (arg) |
| 1276 | arg = strdelim(&cp); |
| 1277 | break; |
| 1278 | |
Damien Miller | f9b3feb | 2003-05-16 11:38:32 +1000 | [diff] [blame] | 1279 | case sUnsupported: |
| 1280 | logit("%s line %d: Unsupported option %s", |
| 1281 | filename, linenum, arg); |
| 1282 | while (arg) |
| 1283 | arg = strdelim(&cp); |
| 1284 | break; |
| 1285 | |
Ben Lindstrom | ade03f6 | 2001-12-06 18:22:17 +0000 | [diff] [blame] | 1286 | default: |
| 1287 | fatal("%s line %d: Missing handler for opcode %s (%d)", |
| 1288 | filename, linenum, arg, opcode); |
| 1289 | } |
| 1290 | if ((arg = strdelim(&cp)) != NULL && *arg != '\0') |
| 1291 | fatal("%s line %d: garbage at end of line; \"%.200s\".", |
| 1292 | filename, linenum, arg); |
| 1293 | return 0; |
| 1294 | } |
| 1295 | |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 1296 | /* Reads the server configuration file. */ |
| 1297 | |
Damien Miller | 4af5130 | 2000-04-16 11:18:38 +1000 | [diff] [blame] | 1298 | void |
Darren Tucker | 645ab75 | 2004-06-25 13:33:20 +1000 | [diff] [blame] | 1299 | load_server_config(const char *filename, Buffer *conf) |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 1300 | { |
Darren Tucker | 645ab75 | 2004-06-25 13:33:20 +1000 | [diff] [blame] | 1301 | char line[1024], *cp; |
Ben Lindstrom | e135363 | 2002-06-23 21:29:23 +0000 | [diff] [blame] | 1302 | FILE *f; |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 1303 | |
Darren Tucker | 645ab75 | 2004-06-25 13:33:20 +1000 | [diff] [blame] | 1304 | debug2("%s: filename %s", __func__, filename); |
| 1305 | if ((f = fopen(filename, "r")) == NULL) { |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 1306 | perror(filename); |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 1307 | exit(1); |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 1308 | } |
Darren Tucker | 645ab75 | 2004-06-25 13:33:20 +1000 | [diff] [blame] | 1309 | buffer_clear(conf); |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 1310 | while (fgets(line, sizeof(line), f)) { |
Darren Tucker | 645ab75 | 2004-06-25 13:33:20 +1000 | [diff] [blame] | 1311 | /* |
| 1312 | * Trim out comments and strip whitespace |
Darren Tucker | fc95970 | 2004-07-17 16:12:08 +1000 | [diff] [blame] | 1313 | * NB - preserve newlines, they are needed to reproduce |
Darren Tucker | 645ab75 | 2004-06-25 13:33:20 +1000 | [diff] [blame] | 1314 | * line numbers later for error messages |
| 1315 | */ |
| 1316 | if ((cp = strchr(line, '#')) != NULL) |
| 1317 | memcpy(cp, "\n", 2); |
| 1318 | cp = line + strspn(line, " \t\r"); |
| 1319 | |
| 1320 | buffer_append(conf, cp, strlen(cp)); |
| 1321 | } |
| 1322 | buffer_append(conf, "\0", 1); |
| 1323 | fclose(f); |
| 1324 | debug2("%s: done config len = %d", __func__, buffer_len(conf)); |
| 1325 | } |
| 1326 | |
| 1327 | void |
Darren Tucker | 4515047 | 2006-07-12 22:34:17 +1000 | [diff] [blame] | 1328 | parse_server_match_config(ServerOptions *options, const char *user, |
| 1329 | const char *host, const char *address) |
Darren Tucker | 645ab75 | 2004-06-25 13:33:20 +1000 | [diff] [blame] | 1330 | { |
Darren Tucker | 4515047 | 2006-07-12 22:34:17 +1000 | [diff] [blame] | 1331 | ServerOptions mo; |
| 1332 | |
| 1333 | initialize_server_options(&mo); |
| 1334 | parse_server_config(&mo, "reprocess config", &cfg, user, host, address); |
Darren Tucker | 1629c07 | 2007-02-19 22:25:37 +1100 | [diff] [blame] | 1335 | copy_set_server_options(options, &mo, 0); |
Darren Tucker | 4515047 | 2006-07-12 22:34:17 +1000 | [diff] [blame] | 1336 | } |
| 1337 | |
Darren Tucker | 1629c07 | 2007-02-19 22:25:37 +1100 | [diff] [blame] | 1338 | /* Helper macros */ |
| 1339 | #define M_CP_INTOPT(n) do {\ |
| 1340 | if (src->n != -1) \ |
| 1341 | dst->n = src->n; \ |
| 1342 | } while (0) |
| 1343 | #define M_CP_STROPT(n) do {\ |
| 1344 | if (src->n != NULL) { \ |
| 1345 | if (dst->n != NULL) \ |
| 1346 | xfree(dst->n); \ |
| 1347 | dst->n = src->n; \ |
| 1348 | } \ |
| 1349 | } while(0) |
| 1350 | |
| 1351 | /* |
| 1352 | * Copy any supported values that are set. |
| 1353 | * |
| 1354 | * If the preauth flag is set, we do not bother copying the the string or |
| 1355 | * array values that are not used pre-authentication, because any that we |
| 1356 | * do use must be explictly sent in mm_getpwnamallow(). |
| 1357 | */ |
Darren Tucker | 4515047 | 2006-07-12 22:34:17 +1000 | [diff] [blame] | 1358 | void |
Darren Tucker | 1629c07 | 2007-02-19 22:25:37 +1100 | [diff] [blame] | 1359 | copy_set_server_options(ServerOptions *dst, ServerOptions *src, int preauth) |
Darren Tucker | 4515047 | 2006-07-12 22:34:17 +1000 | [diff] [blame] | 1360 | { |
Darren Tucker | 1629c07 | 2007-02-19 22:25:37 +1100 | [diff] [blame] | 1361 | M_CP_INTOPT(password_authentication); |
| 1362 | M_CP_INTOPT(gss_authentication); |
| 1363 | M_CP_INTOPT(rsa_authentication); |
| 1364 | M_CP_INTOPT(pubkey_authentication); |
| 1365 | M_CP_INTOPT(kerberos_authentication); |
| 1366 | M_CP_INTOPT(hostbased_authentication); |
| 1367 | M_CP_INTOPT(kbd_interactive_authentication); |
Darren Tucker | 15f9427 | 2008-01-01 20:36:56 +1100 | [diff] [blame] | 1368 | M_CP_INTOPT(permit_root_login); |
Darren Tucker | 1629c07 | 2007-02-19 22:25:37 +1100 | [diff] [blame] | 1369 | |
| 1370 | M_CP_INTOPT(allow_tcp_forwarding); |
| 1371 | M_CP_INTOPT(gateway_ports); |
| 1372 | M_CP_INTOPT(x11_display_offset); |
| 1373 | M_CP_INTOPT(x11_forwarding); |
| 1374 | M_CP_INTOPT(x11_use_localhost); |
| 1375 | |
| 1376 | M_CP_STROPT(banner); |
| 1377 | if (preauth) |
| 1378 | return; |
| 1379 | M_CP_STROPT(adm_forced_command); |
Damien Miller | d8cb1f1 | 2008-02-10 22:40:12 +1100 | [diff] [blame] | 1380 | M_CP_STROPT(chroot_directory); |
Darren Tucker | 4515047 | 2006-07-12 22:34:17 +1000 | [diff] [blame] | 1381 | } |
| 1382 | |
Darren Tucker | 1629c07 | 2007-02-19 22:25:37 +1100 | [diff] [blame] | 1383 | #undef M_CP_INTOPT |
| 1384 | #undef M_CP_STROPT |
| 1385 | |
Darren Tucker | 4515047 | 2006-07-12 22:34:17 +1000 | [diff] [blame] | 1386 | void |
| 1387 | parse_server_config(ServerOptions *options, const char *filename, Buffer *conf, |
| 1388 | const char *user, const char *host, const char *address) |
| 1389 | { |
| 1390 | int active, linenum, bad_options = 0; |
Darren Tucker | 9fbac71 | 2004-08-12 22:41:44 +1000 | [diff] [blame] | 1391 | char *cp, *obuf, *cbuf; |
Darren Tucker | 645ab75 | 2004-06-25 13:33:20 +1000 | [diff] [blame] | 1392 | |
| 1393 | debug2("%s: config %s len %d", __func__, filename, buffer_len(conf)); |
| 1394 | |
Darren Tucker | 9fbac71 | 2004-08-12 22:41:44 +1000 | [diff] [blame] | 1395 | obuf = cbuf = xstrdup(buffer_ptr(conf)); |
Darren Tucker | 4515047 | 2006-07-12 22:34:17 +1000 | [diff] [blame] | 1396 | active = user ? 0 : 1; |
Darren Tucker | 137e9c9 | 2004-08-13 21:30:24 +1000 | [diff] [blame] | 1397 | linenum = 1; |
Darren Tucker | 47eede7 | 2005-03-14 23:08:12 +1100 | [diff] [blame] | 1398 | while ((cp = strsep(&cbuf, "\n")) != NULL) { |
Darren Tucker | 645ab75 | 2004-06-25 13:33:20 +1000 | [diff] [blame] | 1399 | if (process_server_config_line(options, cp, filename, |
Darren Tucker | 4515047 | 2006-07-12 22:34:17 +1000 | [diff] [blame] | 1400 | linenum++, &active, user, host, address) != 0) |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 1401 | bad_options++; |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 1402 | } |
Darren Tucker | 9fbac71 | 2004-08-12 22:41:44 +1000 | [diff] [blame] | 1403 | xfree(obuf); |
Ben Lindstrom | b5cdc66 | 2001-04-16 02:13:26 +0000 | [diff] [blame] | 1404 | if (bad_options > 0) |
| 1405 | fatal("%s: terminating, %d bad configuration options", |
| 1406 | filename, bad_options); |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 1407 | } |