Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 1 | /* |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 2 | * Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland |
| 3 | * All rights reserved |
Damien Miller | 4af5130 | 2000-04-16 11:18:38 +1000 | [diff] [blame] | 4 | * |
Damien Miller | e4340be | 2000-09-16 13:29:08 +1100 | [diff] [blame] | 5 | * As far as I am concerned, the code I have written for this software |
| 6 | * can be used freely for any purpose. Any derived versions of this |
| 7 | * software must be clearly marked as such, and if the derived work is |
| 8 | * incompatible with the protocol description in the RFC file, it must be |
| 9 | * called by a name other than "ssh" or "Secure Shell". |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 10 | */ |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 11 | |
| 12 | #include "includes.h" |
Kevin Steves | 2b725a0 | 2001-02-05 18:16:28 +0000 | [diff] [blame] | 13 | RCSID("$OpenBSD: servconf.c,v 1.65 2001/02/04 15:32:24 stevesk Exp $"); |
Ben Lindstrom | 226cfa0 | 2001-01-22 05:34:40 +0000 | [diff] [blame] | 14 | |
| 15 | #ifdef KRB4 |
| 16 | #include <krb.h> |
| 17 | #endif |
| 18 | #ifdef AFS |
| 19 | #include <kafs.h> |
| 20 | #endif |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 21 | |
| 22 | #include "ssh.h" |
Ben Lindstrom | 226cfa0 | 2001-01-22 05:34:40 +0000 | [diff] [blame] | 23 | #include "log.h" |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 24 | #include "servconf.h" |
| 25 | #include "xmalloc.h" |
Damien Miller | 7892879 | 2000-04-12 20:17:38 +1000 | [diff] [blame] | 26 | #include "compat.h" |
Ben Lindstrom | 226cfa0 | 2001-01-22 05:34:40 +0000 | [diff] [blame] | 27 | #include "pathnames.h" |
| 28 | #include "tildexpand.h" |
| 29 | #include "misc.h" |
| 30 | #include "cipher.h" |
| 31 | |
Damien Miller | 34132e5 | 2000-01-14 15:45:46 +1100 | [diff] [blame] | 32 | /* add listen address */ |
| 33 | void add_listen_addr(ServerOptions *options, char *addr); |
| 34 | |
Ben Lindstrom | 226cfa0 | 2001-01-22 05:34:40 +0000 | [diff] [blame] | 35 | /* AF_UNSPEC or AF_INET or AF_INET6 */ |
| 36 | extern int IPv4or6; |
| 37 | |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 38 | /* Initializes the server options to their default values. */ |
| 39 | |
Damien Miller | 4af5130 | 2000-04-16 11:18:38 +1000 | [diff] [blame] | 40 | void |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 41 | initialize_server_options(ServerOptions *options) |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 42 | { |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 43 | memset(options, 0, sizeof(*options)); |
Damien Miller | 34132e5 | 2000-01-14 15:45:46 +1100 | [diff] [blame] | 44 | options->num_ports = 0; |
| 45 | options->ports_from_cmdline = 0; |
| 46 | options->listen_addrs = NULL; |
Damien Miller | 0bc1bd8 | 2000-11-13 22:57:25 +1100 | [diff] [blame] | 47 | options->num_host_key_files = 0; |
Damien Miller | 6f83b8e | 2000-05-02 09:23:45 +1000 | [diff] [blame] | 48 | options->pid_file = NULL; |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 49 | options->server_key_bits = -1; |
| 50 | options->login_grace_time = -1; |
| 51 | options->key_regeneration_time = -1; |
| 52 | options->permit_root_login = -1; |
| 53 | options->ignore_rhosts = -1; |
| 54 | options->ignore_user_known_hosts = -1; |
| 55 | options->print_motd = -1; |
| 56 | options->check_mail = -1; |
| 57 | options->x11_forwarding = -1; |
| 58 | options->x11_display_offset = -1; |
Damien Miller | d3a1857 | 2000-06-07 19:55:44 +1000 | [diff] [blame] | 59 | options->xauth_location = NULL; |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 60 | options->strict_modes = -1; |
| 61 | options->keepalives = -1; |
| 62 | options->log_facility = (SyslogFacility) - 1; |
| 63 | options->log_level = (LogLevel) - 1; |
| 64 | options->rhosts_authentication = -1; |
| 65 | options->rhosts_rsa_authentication = -1; |
| 66 | options->rsa_authentication = -1; |
Damien Miller | 0bc1bd8 | 2000-11-13 22:57:25 +1100 | [diff] [blame] | 67 | options->pubkey_authentication = -1; |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 68 | #ifdef KRB4 |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 69 | options->kerberos_authentication = -1; |
| 70 | options->kerberos_or_local_passwd = -1; |
| 71 | options->kerberos_ticket_cleanup = -1; |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 72 | #endif |
| 73 | #ifdef AFS |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 74 | options->kerberos_tgt_passing = -1; |
| 75 | options->afs_token_passing = -1; |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 76 | #endif |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 77 | options->password_authentication = -1; |
Damien Miller | 874d77b | 2000-10-14 16:23:11 +1100 | [diff] [blame] | 78 | options->kbd_interactive_authentication = -1; |
Ben Lindstrom | 95fb2dd | 2001-01-23 03:12:10 +0000 | [diff] [blame] | 79 | options->challenge_reponse_authentication = -1; |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 80 | options->permit_empty_passwd = -1; |
| 81 | options->use_login = -1; |
Damien Miller | 50a41ed | 2000-10-16 12:14:42 +1100 | [diff] [blame] | 82 | options->allow_tcp_forwarding = -1; |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 83 | options->num_allow_users = 0; |
| 84 | options->num_deny_users = 0; |
| 85 | options->num_allow_groups = 0; |
| 86 | options->num_deny_groups = 0; |
Damien Miller | 7892879 | 2000-04-12 20:17:38 +1000 | [diff] [blame] | 87 | options->ciphers = NULL; |
| 88 | options->protocol = SSH_PROTO_UNKNOWN; |
Damien Miller | e247cc4 | 2000-05-07 12:03:14 +1000 | [diff] [blame] | 89 | options->gateway_ports = -1; |
Damien Miller | f6d9e22 | 2000-06-18 14:50:44 +1000 | [diff] [blame] | 90 | options->num_subsystems = 0; |
Damien Miller | 942da03 | 2000-08-18 13:59:06 +1000 | [diff] [blame] | 91 | options->max_startups_begin = -1; |
| 92 | options->max_startups_rate = -1; |
Damien Miller | 3702396 | 2000-07-11 17:31:38 +1000 | [diff] [blame] | 93 | options->max_startups = -1; |
Ben Lindstrom | 48bd7c1 | 2001-01-09 00:35:42 +0000 | [diff] [blame] | 94 | options->banner = NULL; |
Damien Miller | 3380426 | 2001-02-04 23:20:18 +1100 | [diff] [blame] | 95 | options->reverse_mapping_check = -1; |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 96 | } |
| 97 | |
Damien Miller | 4af5130 | 2000-04-16 11:18:38 +1000 | [diff] [blame] | 98 | void |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 99 | fill_default_server_options(ServerOptions *options) |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 100 | { |
Damien Miller | 0bc1bd8 | 2000-11-13 22:57:25 +1100 | [diff] [blame] | 101 | if (options->protocol == SSH_PROTO_UNKNOWN) |
| 102 | options->protocol = SSH_PROTO_1|SSH_PROTO_2; |
| 103 | if (options->num_host_key_files == 0) { |
| 104 | /* fill default hostkeys for protocols */ |
| 105 | if (options->protocol & SSH_PROTO_1) |
Ben Lindstrom | 226cfa0 | 2001-01-22 05:34:40 +0000 | [diff] [blame] | 106 | options->host_key_files[options->num_host_key_files++] = _PATH_HOST_KEY_FILE; |
Damien Miller | 0bc1bd8 | 2000-11-13 22:57:25 +1100 | [diff] [blame] | 107 | if (options->protocol & SSH_PROTO_2) |
Ben Lindstrom | 226cfa0 | 2001-01-22 05:34:40 +0000 | [diff] [blame] | 108 | options->host_key_files[options->num_host_key_files++] = _PATH_HOST_DSA_KEY_FILE; |
Damien Miller | 0bc1bd8 | 2000-11-13 22:57:25 +1100 | [diff] [blame] | 109 | } |
Damien Miller | 34132e5 | 2000-01-14 15:45:46 +1100 | [diff] [blame] | 110 | if (options->num_ports == 0) |
| 111 | options->ports[options->num_ports++] = SSH_DEFAULT_PORT; |
| 112 | if (options->listen_addrs == NULL) |
| 113 | add_listen_addr(options, NULL); |
Damien Miller | 6f83b8e | 2000-05-02 09:23:45 +1000 | [diff] [blame] | 114 | if (options->pid_file == NULL) |
Ben Lindstrom | 226cfa0 | 2001-01-22 05:34:40 +0000 | [diff] [blame] | 115 | options->pid_file = _PATH_SSH_DAEMON_PID_FILE; |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 116 | if (options->server_key_bits == -1) |
| 117 | options->server_key_bits = 768; |
| 118 | if (options->login_grace_time == -1) |
| 119 | options->login_grace_time = 600; |
| 120 | if (options->key_regeneration_time == -1) |
| 121 | options->key_regeneration_time = 3600; |
| 122 | if (options->permit_root_login == -1) |
| 123 | options->permit_root_login = 1; /* yes */ |
| 124 | if (options->ignore_rhosts == -1) |
Damien Miller | 98c7ad6 | 2000-03-09 21:27:49 +1100 | [diff] [blame] | 125 | options->ignore_rhosts = 1; |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 126 | if (options->ignore_user_known_hosts == -1) |
| 127 | options->ignore_user_known_hosts = 0; |
| 128 | if (options->check_mail == -1) |
| 129 | options->check_mail = 0; |
| 130 | if (options->print_motd == -1) |
| 131 | options->print_motd = 1; |
| 132 | if (options->x11_forwarding == -1) |
Damien Miller | 98c7ad6 | 2000-03-09 21:27:49 +1100 | [diff] [blame] | 133 | options->x11_forwarding = 0; |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 134 | if (options->x11_display_offset == -1) |
Damien Miller | 98c7ad6 | 2000-03-09 21:27:49 +1100 | [diff] [blame] | 135 | options->x11_display_offset = 10; |
Damien Miller | d3a1857 | 2000-06-07 19:55:44 +1000 | [diff] [blame] | 136 | #ifdef XAUTH_PATH |
| 137 | if (options->xauth_location == NULL) |
| 138 | options->xauth_location = XAUTH_PATH; |
| 139 | #endif /* XAUTH_PATH */ |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 140 | if (options->strict_modes == -1) |
| 141 | options->strict_modes = 1; |
| 142 | if (options->keepalives == -1) |
| 143 | options->keepalives = 1; |
| 144 | if (options->log_facility == (SyslogFacility) (-1)) |
| 145 | options->log_facility = SYSLOG_FACILITY_AUTH; |
| 146 | if (options->log_level == (LogLevel) (-1)) |
Ben Lindstrom | db65e8f | 2001-01-19 04:26:52 +0000 | [diff] [blame] | 147 | options->log_level = SYSLOG_LEVEL_INFO; |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 148 | if (options->rhosts_authentication == -1) |
| 149 | options->rhosts_authentication = 0; |
| 150 | if (options->rhosts_rsa_authentication == -1) |
Damien Miller | 98c7ad6 | 2000-03-09 21:27:49 +1100 | [diff] [blame] | 151 | options->rhosts_rsa_authentication = 0; |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 152 | if (options->rsa_authentication == -1) |
| 153 | options->rsa_authentication = 1; |
Damien Miller | 0bc1bd8 | 2000-11-13 22:57:25 +1100 | [diff] [blame] | 154 | if (options->pubkey_authentication == -1) |
| 155 | options->pubkey_authentication = 1; |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 156 | #ifdef KRB4 |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 157 | if (options->kerberos_authentication == -1) |
| 158 | options->kerberos_authentication = (access(KEYFILE, R_OK) == 0); |
| 159 | if (options->kerberos_or_local_passwd == -1) |
| 160 | options->kerberos_or_local_passwd = 1; |
| 161 | if (options->kerberos_ticket_cleanup == -1) |
| 162 | options->kerberos_ticket_cleanup = 1; |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 163 | #endif /* KRB4 */ |
| 164 | #ifdef AFS |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 165 | if (options->kerberos_tgt_passing == -1) |
| 166 | options->kerberos_tgt_passing = 0; |
| 167 | if (options->afs_token_passing == -1) |
| 168 | options->afs_token_passing = k_hasafs(); |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 169 | #endif /* AFS */ |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 170 | if (options->password_authentication == -1) |
| 171 | options->password_authentication = 1; |
Damien Miller | 874d77b | 2000-10-14 16:23:11 +1100 | [diff] [blame] | 172 | if (options->kbd_interactive_authentication == -1) |
| 173 | options->kbd_interactive_authentication = 0; |
Ben Lindstrom | 95fb2dd | 2001-01-23 03:12:10 +0000 | [diff] [blame] | 174 | if (options->challenge_reponse_authentication == -1) |
| 175 | options->challenge_reponse_authentication = 1; |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 176 | if (options->permit_empty_passwd == -1) |
Damien Miller | 98c7ad6 | 2000-03-09 21:27:49 +1100 | [diff] [blame] | 177 | options->permit_empty_passwd = 0; |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 178 | if (options->use_login == -1) |
| 179 | options->use_login = 0; |
Damien Miller | 50a41ed | 2000-10-16 12:14:42 +1100 | [diff] [blame] | 180 | if (options->allow_tcp_forwarding == -1) |
| 181 | options->allow_tcp_forwarding = 1; |
Damien Miller | e247cc4 | 2000-05-07 12:03:14 +1000 | [diff] [blame] | 182 | if (options->gateway_ports == -1) |
| 183 | options->gateway_ports = 0; |
Damien Miller | 3702396 | 2000-07-11 17:31:38 +1000 | [diff] [blame] | 184 | if (options->max_startups == -1) |
| 185 | options->max_startups = 10; |
Damien Miller | 942da03 | 2000-08-18 13:59:06 +1000 | [diff] [blame] | 186 | if (options->max_startups_rate == -1) |
| 187 | options->max_startups_rate = 100; /* 100% */ |
| 188 | if (options->max_startups_begin == -1) |
| 189 | options->max_startups_begin = options->max_startups; |
Damien Miller | 3380426 | 2001-02-04 23:20:18 +1100 | [diff] [blame] | 190 | if (options->reverse_mapping_check == -1) |
| 191 | options->reverse_mapping_check = 0; |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 192 | } |
| 193 | |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 194 | /* Keyword tokens. */ |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 195 | typedef enum { |
| 196 | sBadOption, /* == unknown option */ |
| 197 | sPort, sHostKeyFile, sServerKeyBits, sLoginGraceTime, sKeyRegenerationTime, |
| 198 | sPermitRootLogin, sLogFacility, sLogLevel, |
| 199 | sRhostsAuthentication, sRhostsRSAAuthentication, sRSAAuthentication, |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 200 | #ifdef KRB4 |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 201 | sKerberosAuthentication, sKerberosOrLocalPasswd, sKerberosTicketCleanup, |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 202 | #endif |
| 203 | #ifdef AFS |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 204 | sKerberosTgtPassing, sAFSTokenPassing, |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 205 | #endif |
Ben Lindstrom | 95fb2dd | 2001-01-23 03:12:10 +0000 | [diff] [blame] | 206 | sChallengeResponseAuthentication, |
Damien Miller | 874d77b | 2000-10-14 16:23:11 +1100 | [diff] [blame] | 207 | sPasswordAuthentication, sKbdInteractiveAuthentication, sListenAddress, |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 208 | sPrintMotd, sIgnoreRhosts, sX11Forwarding, sX11DisplayOffset, |
| 209 | sStrictModes, sEmptyPasswd, sRandomSeedFile, sKeepAlives, sCheckMail, |
Damien Miller | 50a41ed | 2000-10-16 12:14:42 +1100 | [diff] [blame] | 210 | sUseLogin, sAllowTcpForwarding, |
| 211 | sAllowUsers, sDenyUsers, sAllowGroups, sDenyGroups, |
Damien Miller | 0bc1bd8 | 2000-11-13 22:57:25 +1100 | [diff] [blame] | 212 | sIgnoreUserKnownHosts, sCiphers, sProtocol, sPidFile, |
| 213 | sGatewayPorts, sPubkeyAuthentication, sXAuthLocation, sSubsystem, sMaxStartups, |
Damien Miller | 3380426 | 2001-02-04 23:20:18 +1100 | [diff] [blame] | 214 | sBanner, sReverseMappingCheck |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 215 | } ServerOpCodes; |
| 216 | |
| 217 | /* Textual representation of the tokens. */ |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 218 | static struct { |
| 219 | const char *name; |
| 220 | ServerOpCodes opcode; |
| 221 | } keywords[] = { |
| 222 | { "port", sPort }, |
| 223 | { "hostkey", sHostKeyFile }, |
Damien Miller | 0bc1bd8 | 2000-11-13 22:57:25 +1100 | [diff] [blame] | 224 | { "hostdsakey", sHostKeyFile }, /* alias */ |
Kevin Steves | ef4eea9 | 2001-02-05 12:42:17 +0000 | [diff] [blame] | 225 | { "pidfile", sPidFile }, |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 226 | { "serverkeybits", sServerKeyBits }, |
| 227 | { "logingracetime", sLoginGraceTime }, |
| 228 | { "keyregenerationinterval", sKeyRegenerationTime }, |
| 229 | { "permitrootlogin", sPermitRootLogin }, |
| 230 | { "syslogfacility", sLogFacility }, |
| 231 | { "loglevel", sLogLevel }, |
| 232 | { "rhostsauthentication", sRhostsAuthentication }, |
| 233 | { "rhostsrsaauthentication", sRhostsRSAAuthentication }, |
| 234 | { "rsaauthentication", sRSAAuthentication }, |
Damien Miller | 0bc1bd8 | 2000-11-13 22:57:25 +1100 | [diff] [blame] | 235 | { "pubkeyauthentication", sPubkeyAuthentication }, |
| 236 | { "dsaauthentication", sPubkeyAuthentication }, /* alias */ |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 237 | #ifdef KRB4 |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 238 | { "kerberosauthentication", sKerberosAuthentication }, |
| 239 | { "kerberosorlocalpasswd", sKerberosOrLocalPasswd }, |
| 240 | { "kerberosticketcleanup", sKerberosTicketCleanup }, |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 241 | #endif |
| 242 | #ifdef AFS |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 243 | { "kerberostgtpassing", sKerberosTgtPassing }, |
| 244 | { "afstokenpassing", sAFSTokenPassing }, |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 245 | #endif |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 246 | { "passwordauthentication", sPasswordAuthentication }, |
Damien Miller | 874d77b | 2000-10-14 16:23:11 +1100 | [diff] [blame] | 247 | { "kbdinteractiveauthentication", sKbdInteractiveAuthentication }, |
Ben Lindstrom | 95fb2dd | 2001-01-23 03:12:10 +0000 | [diff] [blame] | 248 | { "challengeresponseauthentication", sChallengeResponseAuthentication }, |
| 249 | { "skeyauthentication", sChallengeResponseAuthentication }, /* alias */ |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 250 | { "checkmail", sCheckMail }, |
| 251 | { "listenaddress", sListenAddress }, |
| 252 | { "printmotd", sPrintMotd }, |
| 253 | { "ignorerhosts", sIgnoreRhosts }, |
| 254 | { "ignoreuserknownhosts", sIgnoreUserKnownHosts }, |
| 255 | { "x11forwarding", sX11Forwarding }, |
| 256 | { "x11displayoffset", sX11DisplayOffset }, |
Damien Miller | d3a1857 | 2000-06-07 19:55:44 +1000 | [diff] [blame] | 257 | { "xauthlocation", sXAuthLocation }, |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 258 | { "strictmodes", sStrictModes }, |
| 259 | { "permitemptypasswords", sEmptyPasswd }, |
| 260 | { "uselogin", sUseLogin }, |
| 261 | { "randomseed", sRandomSeedFile }, |
| 262 | { "keepalive", sKeepAlives }, |
Damien Miller | 50a41ed | 2000-10-16 12:14:42 +1100 | [diff] [blame] | 263 | { "allowtcpforwarding", sAllowTcpForwarding }, |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 264 | { "allowusers", sAllowUsers }, |
| 265 | { "denyusers", sDenyUsers }, |
| 266 | { "allowgroups", sAllowGroups }, |
| 267 | { "denygroups", sDenyGroups }, |
Damien Miller | 7892879 | 2000-04-12 20:17:38 +1000 | [diff] [blame] | 268 | { "ciphers", sCiphers }, |
| 269 | { "protocol", sProtocol }, |
Damien Miller | e247cc4 | 2000-05-07 12:03:14 +1000 | [diff] [blame] | 270 | { "gatewayports", sGatewayPorts }, |
Damien Miller | f6d9e22 | 2000-06-18 14:50:44 +1000 | [diff] [blame] | 271 | { "subsystem", sSubsystem }, |
Damien Miller | 3702396 | 2000-07-11 17:31:38 +1000 | [diff] [blame] | 272 | { "maxstartups", sMaxStartups }, |
Ben Lindstrom | 48bd7c1 | 2001-01-09 00:35:42 +0000 | [diff] [blame] | 273 | { "banner", sBanner }, |
Damien Miller | 3380426 | 2001-02-04 23:20:18 +1100 | [diff] [blame] | 274 | { "reversemappingcheck", sReverseMappingCheck }, |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 275 | { NULL, 0 } |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 276 | }; |
| 277 | |
Damien Miller | 5428f64 | 1999-11-25 11:54:57 +1100 | [diff] [blame] | 278 | /* |
| 279 | * Returns the number of the token pointed to by cp of length len. Never |
| 280 | * returns if the token is not known. |
| 281 | */ |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 282 | |
Damien Miller | 4af5130 | 2000-04-16 11:18:38 +1000 | [diff] [blame] | 283 | static ServerOpCodes |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 284 | parse_token(const char *cp, const char *filename, |
| 285 | int linenum) |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 286 | { |
Ben Lindstrom | 46c1622 | 2000-12-22 01:43:59 +0000 | [diff] [blame] | 287 | u_int i; |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 288 | |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 289 | for (i = 0; keywords[i].name; i++) |
Damien Miller | 5428f64 | 1999-11-25 11:54:57 +1100 | [diff] [blame] | 290 | if (strcasecmp(cp, keywords[i].name) == 0) |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 291 | return keywords[i].opcode; |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 292 | |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 293 | fprintf(stderr, "%s: line %d: Bad configuration option: %s\n", |
| 294 | filename, linenum, cp); |
| 295 | return sBadOption; |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 296 | } |
| 297 | |
Damien Miller | 34132e5 | 2000-01-14 15:45:46 +1100 | [diff] [blame] | 298 | /* |
| 299 | * add listen address |
| 300 | */ |
Damien Miller | 4af5130 | 2000-04-16 11:18:38 +1000 | [diff] [blame] | 301 | void |
Damien Miller | 34132e5 | 2000-01-14 15:45:46 +1100 | [diff] [blame] | 302 | add_listen_addr(ServerOptions *options, char *addr) |
| 303 | { |
Damien Miller | 34132e5 | 2000-01-14 15:45:46 +1100 | [diff] [blame] | 304 | struct addrinfo hints, *ai, *aitop; |
| 305 | char strport[NI_MAXSERV]; |
| 306 | int gaierr; |
| 307 | int i; |
| 308 | |
| 309 | if (options->num_ports == 0) |
| 310 | options->ports[options->num_ports++] = SSH_DEFAULT_PORT; |
| 311 | for (i = 0; i < options->num_ports; i++) { |
| 312 | memset(&hints, 0, sizeof(hints)); |
| 313 | hints.ai_family = IPv4or6; |
| 314 | hints.ai_socktype = SOCK_STREAM; |
| 315 | hints.ai_flags = (addr == NULL) ? AI_PASSIVE : 0; |
| 316 | snprintf(strport, sizeof strport, "%d", options->ports[i]); |
| 317 | if ((gaierr = getaddrinfo(addr, strport, &hints, &aitop)) != 0) |
| 318 | fatal("bad addr or host: %s (%s)\n", |
| 319 | addr ? addr : "<NULL>", |
| 320 | gai_strerror(gaierr)); |
| 321 | for (ai = aitop; ai->ai_next; ai = ai->ai_next) |
| 322 | ; |
| 323 | ai->ai_next = options->listen_addrs; |
| 324 | options->listen_addrs = aitop; |
| 325 | } |
| 326 | } |
| 327 | |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 328 | /* Reads the server configuration file. */ |
| 329 | |
Damien Miller | 4af5130 | 2000-04-16 11:18:38 +1000 | [diff] [blame] | 330 | void |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 331 | read_server_config(ServerOptions *options, const char *filename) |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 332 | { |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 333 | FILE *f; |
| 334 | char line[1024]; |
Damien Miller | 3702396 | 2000-07-11 17:31:38 +1000 | [diff] [blame] | 335 | char *cp, **charptr, *arg; |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 336 | int linenum, *intptr, value; |
| 337 | int bad_options = 0; |
| 338 | ServerOpCodes opcode; |
Damien Miller | f6d9e22 | 2000-06-18 14:50:44 +1000 | [diff] [blame] | 339 | int i; |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 340 | |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 341 | f = fopen(filename, "r"); |
| 342 | if (!f) { |
| 343 | perror(filename); |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 344 | exit(1); |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 345 | } |
| 346 | linenum = 0; |
| 347 | while (fgets(line, sizeof(line), f)) { |
| 348 | linenum++; |
Damien Miller | be484b5 | 2000-07-15 14:14:16 +1000 | [diff] [blame] | 349 | cp = line; |
| 350 | arg = strdelim(&cp); |
| 351 | /* Ignore leading whitespace */ |
| 352 | if (*arg == '\0') |
| 353 | arg = strdelim(&cp); |
Ben Lindstrom | 226cfa0 | 2001-01-22 05:34:40 +0000 | [diff] [blame] | 354 | if (!arg || !*arg || *arg == '#') |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 355 | continue; |
Damien Miller | 0bc1bd8 | 2000-11-13 22:57:25 +1100 | [diff] [blame] | 356 | intptr = NULL; |
| 357 | charptr = NULL; |
Damien Miller | 3702396 | 2000-07-11 17:31:38 +1000 | [diff] [blame] | 358 | opcode = parse_token(arg, filename, linenum); |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 359 | switch (opcode) { |
| 360 | case sBadOption: |
| 361 | bad_options++; |
| 362 | continue; |
| 363 | case sPort: |
Damien Miller | 34132e5 | 2000-01-14 15:45:46 +1100 | [diff] [blame] | 364 | /* ignore ports from configfile if cmdline specifies ports */ |
| 365 | if (options->ports_from_cmdline) |
| 366 | continue; |
| 367 | if (options->listen_addrs != NULL) |
| 368 | fatal("%s line %d: ports must be specified before " |
| 369 | "ListenAdress.\n", filename, linenum); |
| 370 | if (options->num_ports >= MAX_PORTS) |
| 371 | fatal("%s line %d: too many ports.\n", |
Damien Miller | 4af5130 | 2000-04-16 11:18:38 +1000 | [diff] [blame] | 372 | filename, linenum); |
Damien Miller | be484b5 | 2000-07-15 14:14:16 +1000 | [diff] [blame] | 373 | arg = strdelim(&cp); |
Damien Miller | 3702396 | 2000-07-11 17:31:38 +1000 | [diff] [blame] | 374 | if (!arg || *arg == '\0') |
Damien Miller | 34132e5 | 2000-01-14 15:45:46 +1100 | [diff] [blame] | 375 | fatal("%s line %d: missing port number.\n", |
| 376 | filename, linenum); |
Damien Miller | 3702396 | 2000-07-11 17:31:38 +1000 | [diff] [blame] | 377 | options->ports[options->num_ports++] = atoi(arg); |
Damien Miller | 34132e5 | 2000-01-14 15:45:46 +1100 | [diff] [blame] | 378 | break; |
| 379 | |
| 380 | case sServerKeyBits: |
| 381 | intptr = &options->server_key_bits; |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 382 | parse_int: |
Damien Miller | be484b5 | 2000-07-15 14:14:16 +1000 | [diff] [blame] | 383 | arg = strdelim(&cp); |
Damien Miller | 3702396 | 2000-07-11 17:31:38 +1000 | [diff] [blame] | 384 | if (!arg || *arg == '\0') { |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 385 | fprintf(stderr, "%s line %d: missing integer value.\n", |
| 386 | filename, linenum); |
| 387 | exit(1); |
| 388 | } |
Damien Miller | 3702396 | 2000-07-11 17:31:38 +1000 | [diff] [blame] | 389 | value = atoi(arg); |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 390 | if (*intptr == -1) |
| 391 | *intptr = value; |
| 392 | break; |
Damien Miller | 3226509 | 1999-11-12 11:33:04 +1100 | [diff] [blame] | 393 | |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 394 | case sLoginGraceTime: |
| 395 | intptr = &options->login_grace_time; |
| 396 | goto parse_int; |
| 397 | |
| 398 | case sKeyRegenerationTime: |
| 399 | intptr = &options->key_regeneration_time; |
| 400 | goto parse_int; |
| 401 | |
| 402 | case sListenAddress: |
Damien Miller | be484b5 | 2000-07-15 14:14:16 +1000 | [diff] [blame] | 403 | arg = strdelim(&cp); |
Damien Miller | 3702396 | 2000-07-11 17:31:38 +1000 | [diff] [blame] | 404 | if (!arg || *arg == '\0') |
Damien Miller | 34132e5 | 2000-01-14 15:45:46 +1100 | [diff] [blame] | 405 | fatal("%s line %d: missing inet addr.\n", |
| 406 | filename, linenum); |
Damien Miller | 3702396 | 2000-07-11 17:31:38 +1000 | [diff] [blame] | 407 | add_listen_addr(options, arg); |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 408 | break; |
| 409 | |
| 410 | case sHostKeyFile: |
Damien Miller | 0bc1bd8 | 2000-11-13 22:57:25 +1100 | [diff] [blame] | 411 | intptr = &options->num_host_key_files; |
| 412 | if (*intptr >= MAX_HOSTKEYS) { |
| 413 | fprintf(stderr, "%s line %d: to many host keys specified (max %d).\n", |
| 414 | filename, linenum, MAX_HOSTKEYS); |
| 415 | exit(1); |
| 416 | } |
| 417 | charptr = &options->host_key_files[*intptr]; |
Damien Miller | d3a1857 | 2000-06-07 19:55:44 +1000 | [diff] [blame] | 418 | parse_filename: |
Damien Miller | be484b5 | 2000-07-15 14:14:16 +1000 | [diff] [blame] | 419 | arg = strdelim(&cp); |
Damien Miller | 3702396 | 2000-07-11 17:31:38 +1000 | [diff] [blame] | 420 | if (!arg || *arg == '\0') { |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 421 | fprintf(stderr, "%s line %d: missing file name.\n", |
Damien Miller | 6f83b8e | 2000-05-02 09:23:45 +1000 | [diff] [blame] | 422 | filename, linenum); |
| 423 | exit(1); |
| 424 | } |
Damien Miller | 0bc1bd8 | 2000-11-13 22:57:25 +1100 | [diff] [blame] | 425 | if (*charptr == NULL) { |
Damien Miller | 3702396 | 2000-07-11 17:31:38 +1000 | [diff] [blame] | 426 | *charptr = tilde_expand_filename(arg, getuid()); |
Damien Miller | 0bc1bd8 | 2000-11-13 22:57:25 +1100 | [diff] [blame] | 427 | /* increase optional counter */ |
| 428 | if (intptr != NULL) |
| 429 | *intptr = *intptr + 1; |
| 430 | } |
Damien Miller | 6f83b8e | 2000-05-02 09:23:45 +1000 | [diff] [blame] | 431 | break; |
| 432 | |
| 433 | case sPidFile: |
| 434 | charptr = &options->pid_file; |
Damien Miller | d3a1857 | 2000-06-07 19:55:44 +1000 | [diff] [blame] | 435 | goto parse_filename; |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 436 | |
| 437 | case sRandomSeedFile: |
| 438 | fprintf(stderr, "%s line %d: \"randomseed\" option is obsolete.\n", |
| 439 | filename, linenum); |
Damien Miller | be484b5 | 2000-07-15 14:14:16 +1000 | [diff] [blame] | 440 | arg = strdelim(&cp); |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 441 | break; |
| 442 | |
| 443 | case sPermitRootLogin: |
| 444 | intptr = &options->permit_root_login; |
Damien Miller | be484b5 | 2000-07-15 14:14:16 +1000 | [diff] [blame] | 445 | arg = strdelim(&cp); |
Damien Miller | 3702396 | 2000-07-11 17:31:38 +1000 | [diff] [blame] | 446 | if (!arg || *arg == '\0') { |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 447 | fprintf(stderr, "%s line %d: missing yes/without-password/no argument.\n", |
| 448 | filename, linenum); |
| 449 | exit(1); |
| 450 | } |
Damien Miller | 3702396 | 2000-07-11 17:31:38 +1000 | [diff] [blame] | 451 | if (strcmp(arg, "without-password") == 0) |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 452 | value = 2; |
Damien Miller | 3702396 | 2000-07-11 17:31:38 +1000 | [diff] [blame] | 453 | else if (strcmp(arg, "yes") == 0) |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 454 | value = 1; |
Damien Miller | 3702396 | 2000-07-11 17:31:38 +1000 | [diff] [blame] | 455 | else if (strcmp(arg, "no") == 0) |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 456 | value = 0; |
| 457 | else { |
| 458 | fprintf(stderr, "%s line %d: Bad yes/without-password/no argument: %s\n", |
Damien Miller | 3702396 | 2000-07-11 17:31:38 +1000 | [diff] [blame] | 459 | filename, linenum, arg); |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 460 | exit(1); |
| 461 | } |
| 462 | if (*intptr == -1) |
| 463 | *intptr = value; |
| 464 | break; |
| 465 | |
| 466 | case sIgnoreRhosts: |
| 467 | intptr = &options->ignore_rhosts; |
| 468 | parse_flag: |
Damien Miller | be484b5 | 2000-07-15 14:14:16 +1000 | [diff] [blame] | 469 | arg = strdelim(&cp); |
Damien Miller | 3702396 | 2000-07-11 17:31:38 +1000 | [diff] [blame] | 470 | if (!arg || *arg == '\0') { |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 471 | fprintf(stderr, "%s line %d: missing yes/no argument.\n", |
| 472 | filename, linenum); |
| 473 | exit(1); |
| 474 | } |
Damien Miller | 3702396 | 2000-07-11 17:31:38 +1000 | [diff] [blame] | 475 | if (strcmp(arg, "yes") == 0) |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 476 | value = 1; |
Damien Miller | 3702396 | 2000-07-11 17:31:38 +1000 | [diff] [blame] | 477 | else if (strcmp(arg, "no") == 0) |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 478 | value = 0; |
| 479 | else { |
| 480 | fprintf(stderr, "%s line %d: Bad yes/no argument: %s\n", |
Damien Miller | 3702396 | 2000-07-11 17:31:38 +1000 | [diff] [blame] | 481 | filename, linenum, arg); |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 482 | exit(1); |
| 483 | } |
| 484 | if (*intptr == -1) |
| 485 | *intptr = value; |
| 486 | break; |
| 487 | |
| 488 | case sIgnoreUserKnownHosts: |
| 489 | intptr = &options->ignore_user_known_hosts; |
Damien Miller | 98c7ad6 | 2000-03-09 21:27:49 +1100 | [diff] [blame] | 490 | goto parse_flag; |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 491 | |
| 492 | case sRhostsAuthentication: |
| 493 | intptr = &options->rhosts_authentication; |
| 494 | goto parse_flag; |
| 495 | |
| 496 | case sRhostsRSAAuthentication: |
| 497 | intptr = &options->rhosts_rsa_authentication; |
| 498 | goto parse_flag; |
| 499 | |
| 500 | case sRSAAuthentication: |
| 501 | intptr = &options->rsa_authentication; |
| 502 | goto parse_flag; |
| 503 | |
Damien Miller | 0bc1bd8 | 2000-11-13 22:57:25 +1100 | [diff] [blame] | 504 | case sPubkeyAuthentication: |
| 505 | intptr = &options->pubkey_authentication; |
Damien Miller | e247cc4 | 2000-05-07 12:03:14 +1000 | [diff] [blame] | 506 | goto parse_flag; |
| 507 | |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 508 | #ifdef KRB4 |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 509 | case sKerberosAuthentication: |
| 510 | intptr = &options->kerberos_authentication; |
| 511 | goto parse_flag; |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 512 | |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 513 | case sKerberosOrLocalPasswd: |
| 514 | intptr = &options->kerberos_or_local_passwd; |
| 515 | goto parse_flag; |
| 516 | |
| 517 | case sKerberosTicketCleanup: |
| 518 | intptr = &options->kerberos_ticket_cleanup; |
| 519 | goto parse_flag; |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 520 | #endif |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 521 | |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 522 | #ifdef AFS |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 523 | case sKerberosTgtPassing: |
| 524 | intptr = &options->kerberos_tgt_passing; |
| 525 | goto parse_flag; |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 526 | |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 527 | case sAFSTokenPassing: |
| 528 | intptr = &options->afs_token_passing; |
| 529 | goto parse_flag; |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 530 | #endif |
| 531 | |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 532 | case sPasswordAuthentication: |
| 533 | intptr = &options->password_authentication; |
| 534 | goto parse_flag; |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 535 | |
Damien Miller | 874d77b | 2000-10-14 16:23:11 +1100 | [diff] [blame] | 536 | case sKbdInteractiveAuthentication: |
| 537 | intptr = &options->kbd_interactive_authentication; |
| 538 | goto parse_flag; |
| 539 | |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 540 | case sCheckMail: |
| 541 | intptr = &options->check_mail; |
| 542 | goto parse_flag; |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 543 | |
Ben Lindstrom | 95fb2dd | 2001-01-23 03:12:10 +0000 | [diff] [blame] | 544 | case sChallengeResponseAuthentication: |
| 545 | intptr = &options->challenge_reponse_authentication; |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 546 | goto parse_flag; |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 547 | |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 548 | case sPrintMotd: |
| 549 | intptr = &options->print_motd; |
| 550 | goto parse_flag; |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 551 | |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 552 | case sX11Forwarding: |
| 553 | intptr = &options->x11_forwarding; |
| 554 | goto parse_flag; |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 555 | |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 556 | case sX11DisplayOffset: |
| 557 | intptr = &options->x11_display_offset; |
| 558 | goto parse_int; |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 559 | |
Damien Miller | d3a1857 | 2000-06-07 19:55:44 +1000 | [diff] [blame] | 560 | case sXAuthLocation: |
| 561 | charptr = &options->xauth_location; |
| 562 | goto parse_filename; |
Kevin Steves | ef4eea9 | 2001-02-05 12:42:17 +0000 | [diff] [blame] | 563 | |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 564 | case sStrictModes: |
| 565 | intptr = &options->strict_modes; |
| 566 | goto parse_flag; |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 567 | |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 568 | case sKeepAlives: |
| 569 | intptr = &options->keepalives; |
| 570 | goto parse_flag; |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 571 | |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 572 | case sEmptyPasswd: |
| 573 | intptr = &options->permit_empty_passwd; |
| 574 | goto parse_flag; |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 575 | |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 576 | case sUseLogin: |
| 577 | intptr = &options->use_login; |
| 578 | goto parse_flag; |
Damien Miller | 5ce662a | 1999-11-11 17:57:39 +1100 | [diff] [blame] | 579 | |
Damien Miller | e247cc4 | 2000-05-07 12:03:14 +1000 | [diff] [blame] | 580 | case sGatewayPorts: |
| 581 | intptr = &options->gateway_ports; |
| 582 | goto parse_flag; |
| 583 | |
Damien Miller | 3380426 | 2001-02-04 23:20:18 +1100 | [diff] [blame] | 584 | case sReverseMappingCheck: |
| 585 | intptr = &options->reverse_mapping_check; |
| 586 | goto parse_flag; |
| 587 | |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 588 | case sLogFacility: |
| 589 | intptr = (int *) &options->log_facility; |
Damien Miller | be484b5 | 2000-07-15 14:14:16 +1000 | [diff] [blame] | 590 | arg = strdelim(&cp); |
Damien Miller | 3702396 | 2000-07-11 17:31:38 +1000 | [diff] [blame] | 591 | value = log_facility_number(arg); |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 592 | if (value == (SyslogFacility) - 1) |
| 593 | fatal("%.200s line %d: unsupported log facility '%s'\n", |
Damien Miller | 3702396 | 2000-07-11 17:31:38 +1000 | [diff] [blame] | 594 | filename, linenum, arg ? arg : "<NONE>"); |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 595 | if (*intptr == -1) |
| 596 | *intptr = (SyslogFacility) value; |
| 597 | break; |
| 598 | |
| 599 | case sLogLevel: |
| 600 | intptr = (int *) &options->log_level; |
Damien Miller | be484b5 | 2000-07-15 14:14:16 +1000 | [diff] [blame] | 601 | arg = strdelim(&cp); |
Damien Miller | 3702396 | 2000-07-11 17:31:38 +1000 | [diff] [blame] | 602 | value = log_level_number(arg); |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 603 | if (value == (LogLevel) - 1) |
| 604 | fatal("%.200s line %d: unsupported log level '%s'\n", |
Damien Miller | 3702396 | 2000-07-11 17:31:38 +1000 | [diff] [blame] | 605 | filename, linenum, arg ? arg : "<NONE>"); |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 606 | if (*intptr == -1) |
| 607 | *intptr = (LogLevel) value; |
| 608 | break; |
| 609 | |
Damien Miller | 50a41ed | 2000-10-16 12:14:42 +1100 | [diff] [blame] | 610 | case sAllowTcpForwarding: |
| 611 | intptr = &options->allow_tcp_forwarding; |
| 612 | goto parse_flag; |
| 613 | |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 614 | case sAllowUsers: |
Damien Miller | be484b5 | 2000-07-15 14:14:16 +1000 | [diff] [blame] | 615 | while ((arg = strdelim(&cp)) && *arg != '\0') { |
Damien Miller | 7892879 | 2000-04-12 20:17:38 +1000 | [diff] [blame] | 616 | if (options->num_allow_users >= MAX_ALLOW_USERS) |
| 617 | fatal("%s line %d: too many allow users.\n", |
| 618 | filename, linenum); |
Damien Miller | 3702396 | 2000-07-11 17:31:38 +1000 | [diff] [blame] | 619 | options->allow_users[options->num_allow_users++] = xstrdup(arg); |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 620 | } |
| 621 | break; |
| 622 | |
| 623 | case sDenyUsers: |
Damien Miller | be484b5 | 2000-07-15 14:14:16 +1000 | [diff] [blame] | 624 | while ((arg = strdelim(&cp)) && *arg != '\0') { |
Damien Miller | 7892879 | 2000-04-12 20:17:38 +1000 | [diff] [blame] | 625 | if (options->num_deny_users >= MAX_DENY_USERS) |
| 626 | fatal( "%s line %d: too many deny users.\n", |
| 627 | filename, linenum); |
Damien Miller | 3702396 | 2000-07-11 17:31:38 +1000 | [diff] [blame] | 628 | options->deny_users[options->num_deny_users++] = xstrdup(arg); |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 629 | } |
| 630 | break; |
| 631 | |
| 632 | case sAllowGroups: |
Damien Miller | be484b5 | 2000-07-15 14:14:16 +1000 | [diff] [blame] | 633 | while ((arg = strdelim(&cp)) && *arg != '\0') { |
Damien Miller | 7892879 | 2000-04-12 20:17:38 +1000 | [diff] [blame] | 634 | if (options->num_allow_groups >= MAX_ALLOW_GROUPS) |
| 635 | fatal("%s line %d: too many allow groups.\n", |
| 636 | filename, linenum); |
Damien Miller | 3702396 | 2000-07-11 17:31:38 +1000 | [diff] [blame] | 637 | options->allow_groups[options->num_allow_groups++] = xstrdup(arg); |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 638 | } |
| 639 | break; |
| 640 | |
| 641 | case sDenyGroups: |
Damien Miller | be484b5 | 2000-07-15 14:14:16 +1000 | [diff] [blame] | 642 | while ((arg = strdelim(&cp)) && *arg != '\0') { |
Damien Miller | 7892879 | 2000-04-12 20:17:38 +1000 | [diff] [blame] | 643 | if (options->num_deny_groups >= MAX_DENY_GROUPS) |
| 644 | fatal("%s line %d: too many deny groups.\n", |
| 645 | filename, linenum); |
Damien Miller | 3702396 | 2000-07-11 17:31:38 +1000 | [diff] [blame] | 646 | options->deny_groups[options->num_deny_groups++] = xstrdup(arg); |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 647 | } |
| 648 | break; |
| 649 | |
Damien Miller | 7892879 | 2000-04-12 20:17:38 +1000 | [diff] [blame] | 650 | case sCiphers: |
Damien Miller | be484b5 | 2000-07-15 14:14:16 +1000 | [diff] [blame] | 651 | arg = strdelim(&cp); |
Damien Miller | 3702396 | 2000-07-11 17:31:38 +1000 | [diff] [blame] | 652 | if (!arg || *arg == '\0') |
Damien Miller | b1715dc | 2000-05-30 13:44:51 +1000 | [diff] [blame] | 653 | fatal("%s line %d: Missing argument.", filename, linenum); |
Damien Miller | 3702396 | 2000-07-11 17:31:38 +1000 | [diff] [blame] | 654 | if (!ciphers_valid(arg)) |
Damien Miller | 30c3d42 | 2000-05-09 11:02:59 +1000 | [diff] [blame] | 655 | fatal("%s line %d: Bad SSH2 cipher spec '%s'.", |
Damien Miller | 3702396 | 2000-07-11 17:31:38 +1000 | [diff] [blame] | 656 | filename, linenum, arg ? arg : "<NONE>"); |
Damien Miller | 7892879 | 2000-04-12 20:17:38 +1000 | [diff] [blame] | 657 | if (options->ciphers == NULL) |
Damien Miller | 3702396 | 2000-07-11 17:31:38 +1000 | [diff] [blame] | 658 | options->ciphers = xstrdup(arg); |
Damien Miller | 7892879 | 2000-04-12 20:17:38 +1000 | [diff] [blame] | 659 | break; |
| 660 | |
| 661 | case sProtocol: |
| 662 | intptr = &options->protocol; |
Damien Miller | be484b5 | 2000-07-15 14:14:16 +1000 | [diff] [blame] | 663 | arg = strdelim(&cp); |
Damien Miller | 3702396 | 2000-07-11 17:31:38 +1000 | [diff] [blame] | 664 | if (!arg || *arg == '\0') |
Damien Miller | b1715dc | 2000-05-30 13:44:51 +1000 | [diff] [blame] | 665 | fatal("%s line %d: Missing argument.", filename, linenum); |
Damien Miller | 3702396 | 2000-07-11 17:31:38 +1000 | [diff] [blame] | 666 | value = proto_spec(arg); |
Damien Miller | 7892879 | 2000-04-12 20:17:38 +1000 | [diff] [blame] | 667 | if (value == SSH_PROTO_UNKNOWN) |
| 668 | fatal("%s line %d: Bad protocol spec '%s'.", |
Damien Miller | 3702396 | 2000-07-11 17:31:38 +1000 | [diff] [blame] | 669 | filename, linenum, arg ? arg : "<NONE>"); |
Damien Miller | 7892879 | 2000-04-12 20:17:38 +1000 | [diff] [blame] | 670 | if (*intptr == SSH_PROTO_UNKNOWN) |
| 671 | *intptr = value; |
| 672 | break; |
| 673 | |
Damien Miller | f6d9e22 | 2000-06-18 14:50:44 +1000 | [diff] [blame] | 674 | case sSubsystem: |
| 675 | if(options->num_subsystems >= MAX_SUBSYSTEMS) { |
| 676 | fatal("%s line %d: too many subsystems defined.", |
| 677 | filename, linenum); |
| 678 | } |
Damien Miller | be484b5 | 2000-07-15 14:14:16 +1000 | [diff] [blame] | 679 | arg = strdelim(&cp); |
Damien Miller | 3702396 | 2000-07-11 17:31:38 +1000 | [diff] [blame] | 680 | if (!arg || *arg == '\0') |
Damien Miller | f6d9e22 | 2000-06-18 14:50:44 +1000 | [diff] [blame] | 681 | fatal("%s line %d: Missing subsystem name.", |
| 682 | filename, linenum); |
| 683 | for (i = 0; i < options->num_subsystems; i++) |
Damien Miller | 3702396 | 2000-07-11 17:31:38 +1000 | [diff] [blame] | 684 | if(strcmp(arg, options->subsystem_name[i]) == 0) |
Damien Miller | f6d9e22 | 2000-06-18 14:50:44 +1000 | [diff] [blame] | 685 | fatal("%s line %d: Subsystem '%s' already defined.", |
Damien Miller | 3702396 | 2000-07-11 17:31:38 +1000 | [diff] [blame] | 686 | filename, linenum, arg); |
| 687 | options->subsystem_name[options->num_subsystems] = xstrdup(arg); |
Damien Miller | be484b5 | 2000-07-15 14:14:16 +1000 | [diff] [blame] | 688 | arg = strdelim(&cp); |
Damien Miller | 3702396 | 2000-07-11 17:31:38 +1000 | [diff] [blame] | 689 | if (!arg || *arg == '\0') |
Damien Miller | f6d9e22 | 2000-06-18 14:50:44 +1000 | [diff] [blame] | 690 | fatal("%s line %d: Missing subsystem command.", |
| 691 | filename, linenum); |
Damien Miller | 3702396 | 2000-07-11 17:31:38 +1000 | [diff] [blame] | 692 | options->subsystem_command[options->num_subsystems] = xstrdup(arg); |
Damien Miller | f6d9e22 | 2000-06-18 14:50:44 +1000 | [diff] [blame] | 693 | options->num_subsystems++; |
| 694 | break; |
| 695 | |
Damien Miller | 3702396 | 2000-07-11 17:31:38 +1000 | [diff] [blame] | 696 | case sMaxStartups: |
Damien Miller | 942da03 | 2000-08-18 13:59:06 +1000 | [diff] [blame] | 697 | arg = strdelim(&cp); |
| 698 | if (!arg || *arg == '\0') |
| 699 | fatal("%s line %d: Missing MaxStartups spec.", |
| 700 | filename, linenum); |
| 701 | if (sscanf(arg, "%d:%d:%d", |
| 702 | &options->max_startups_begin, |
| 703 | &options->max_startups_rate, |
| 704 | &options->max_startups) == 3) { |
| 705 | if (options->max_startups_begin > |
| 706 | options->max_startups || |
| 707 | options->max_startups_rate > 100 || |
| 708 | options->max_startups_rate < 1) |
| 709 | fatal("%s line %d: Illegal MaxStartups spec.", |
| 710 | filename, linenum); |
| 711 | break; |
| 712 | } |
Damien Miller | 3702396 | 2000-07-11 17:31:38 +1000 | [diff] [blame] | 713 | intptr = &options->max_startups; |
| 714 | goto parse_int; |
| 715 | |
Ben Lindstrom | 48bd7c1 | 2001-01-09 00:35:42 +0000 | [diff] [blame] | 716 | case sBanner: |
| 717 | charptr = &options->banner; |
| 718 | goto parse_filename; |
Kevin Steves | ef4eea9 | 2001-02-05 12:42:17 +0000 | [diff] [blame] | 719 | |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 720 | default: |
| 721 | fprintf(stderr, "%s line %d: Missing handler for opcode %s (%d)\n", |
Damien Miller | 3702396 | 2000-07-11 17:31:38 +1000 | [diff] [blame] | 722 | filename, linenum, arg, opcode); |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 723 | exit(1); |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 724 | } |
Damien Miller | be484b5 | 2000-07-15 14:14:16 +1000 | [diff] [blame] | 725 | if ((arg = strdelim(&cp)) != NULL && *arg != '\0') { |
Kevin Steves | ef4eea9 | 2001-02-05 12:42:17 +0000 | [diff] [blame] | 726 | fprintf(stderr, |
Damien Miller | 3702396 | 2000-07-11 17:31:38 +1000 | [diff] [blame] | 727 | "%s line %d: garbage at end of line; \"%.200s\".\n", |
| 728 | filename, linenum, arg); |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 729 | exit(1); |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 730 | } |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 731 | } |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 732 | fclose(f); |
| 733 | if (bad_options > 0) { |
| 734 | fprintf(stderr, "%s: terminating, %d bad configuration options\n", |
| 735 | filename, bad_options); |
| 736 | exit(1); |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 737 | } |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 738 | } |