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" |
Ben Lindstrom | 95fb2dd | 2001-01-23 03:12:10 +0000 | [diff] [blame] | 13 | RCSID("$OpenBSD: servconf.c,v 1.63 2001/01/22 23:06:39 markus 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 | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 32 | |
Damien Miller | 34132e5 | 2000-01-14 15:45:46 +1100 | [diff] [blame] | 33 | /* add listen address */ |
| 34 | void add_listen_addr(ServerOptions *options, char *addr); |
| 35 | |
Ben Lindstrom | 226cfa0 | 2001-01-22 05:34:40 +0000 | [diff] [blame] | 36 | /* AF_UNSPEC or AF_INET or AF_INET6 */ |
| 37 | extern int IPv4or6; |
| 38 | |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 39 | /* Initializes the server options to their default values. */ |
| 40 | |
Damien Miller | 4af5130 | 2000-04-16 11:18:38 +1000 | [diff] [blame] | 41 | void |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 42 | initialize_server_options(ServerOptions *options) |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 43 | { |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 44 | memset(options, 0, sizeof(*options)); |
Damien Miller | 34132e5 | 2000-01-14 15:45:46 +1100 | [diff] [blame] | 45 | options->num_ports = 0; |
| 46 | options->ports_from_cmdline = 0; |
| 47 | options->listen_addrs = NULL; |
Damien Miller | 0bc1bd8 | 2000-11-13 22:57:25 +1100 | [diff] [blame] | 48 | options->num_host_key_files = 0; |
Damien Miller | 6f83b8e | 2000-05-02 09:23:45 +1000 | [diff] [blame] | 49 | options->pid_file = NULL; |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 50 | options->server_key_bits = -1; |
| 51 | options->login_grace_time = -1; |
| 52 | options->key_regeneration_time = -1; |
| 53 | options->permit_root_login = -1; |
| 54 | options->ignore_rhosts = -1; |
| 55 | options->ignore_user_known_hosts = -1; |
| 56 | options->print_motd = -1; |
| 57 | options->check_mail = -1; |
| 58 | options->x11_forwarding = -1; |
| 59 | options->x11_display_offset = -1; |
Damien Miller | d3a1857 | 2000-06-07 19:55:44 +1000 | [diff] [blame] | 60 | options->xauth_location = NULL; |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 61 | options->strict_modes = -1; |
| 62 | options->keepalives = -1; |
| 63 | options->log_facility = (SyslogFacility) - 1; |
| 64 | options->log_level = (LogLevel) - 1; |
| 65 | options->rhosts_authentication = -1; |
| 66 | options->rhosts_rsa_authentication = -1; |
| 67 | options->rsa_authentication = -1; |
Damien Miller | 0bc1bd8 | 2000-11-13 22:57:25 +1100 | [diff] [blame] | 68 | options->pubkey_authentication = -1; |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 69 | #ifdef KRB4 |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 70 | options->kerberos_authentication = -1; |
| 71 | options->kerberos_or_local_passwd = -1; |
| 72 | options->kerberos_ticket_cleanup = -1; |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 73 | #endif |
| 74 | #ifdef AFS |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 75 | options->kerberos_tgt_passing = -1; |
| 76 | options->afs_token_passing = -1; |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 77 | #endif |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 78 | options->password_authentication = -1; |
Damien Miller | 874d77b | 2000-10-14 16:23:11 +1100 | [diff] [blame] | 79 | options->kbd_interactive_authentication = -1; |
Ben Lindstrom | 95fb2dd | 2001-01-23 03:12:10 +0000 | [diff] [blame] | 80 | options->challenge_reponse_authentication = -1; |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 81 | options->permit_empty_passwd = -1; |
| 82 | options->use_login = -1; |
Damien Miller | 50a41ed | 2000-10-16 12:14:42 +1100 | [diff] [blame] | 83 | options->allow_tcp_forwarding = -1; |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 84 | options->num_allow_users = 0; |
| 85 | options->num_deny_users = 0; |
| 86 | options->num_allow_groups = 0; |
| 87 | options->num_deny_groups = 0; |
Damien Miller | 7892879 | 2000-04-12 20:17:38 +1000 | [diff] [blame] | 88 | options->ciphers = NULL; |
| 89 | options->protocol = SSH_PROTO_UNKNOWN; |
Damien Miller | e247cc4 | 2000-05-07 12:03:14 +1000 | [diff] [blame] | 90 | options->gateway_ports = -1; |
Damien Miller | f6d9e22 | 2000-06-18 14:50:44 +1000 | [diff] [blame] | 91 | options->num_subsystems = 0; |
Damien Miller | 942da03 | 2000-08-18 13:59:06 +1000 | [diff] [blame] | 92 | options->max_startups_begin = -1; |
| 93 | options->max_startups_rate = -1; |
Damien Miller | 3702396 | 2000-07-11 17:31:38 +1000 | [diff] [blame] | 94 | options->max_startups = -1; |
Ben Lindstrom | 48bd7c1 | 2001-01-09 00:35:42 +0000 | [diff] [blame] | 95 | options->banner = NULL; |
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 | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 190 | } |
| 191 | |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 192 | /* Keyword tokens. */ |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 193 | typedef enum { |
| 194 | sBadOption, /* == unknown option */ |
| 195 | sPort, sHostKeyFile, sServerKeyBits, sLoginGraceTime, sKeyRegenerationTime, |
| 196 | sPermitRootLogin, sLogFacility, sLogLevel, |
| 197 | sRhostsAuthentication, sRhostsRSAAuthentication, sRSAAuthentication, |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 198 | #ifdef KRB4 |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 199 | sKerberosAuthentication, sKerberosOrLocalPasswd, sKerberosTicketCleanup, |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 200 | #endif |
| 201 | #ifdef AFS |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 202 | sKerberosTgtPassing, sAFSTokenPassing, |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 203 | #endif |
Ben Lindstrom | 95fb2dd | 2001-01-23 03:12:10 +0000 | [diff] [blame] | 204 | sChallengeResponseAuthentication, |
Damien Miller | 874d77b | 2000-10-14 16:23:11 +1100 | [diff] [blame] | 205 | sPasswordAuthentication, sKbdInteractiveAuthentication, sListenAddress, |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 206 | sPrintMotd, sIgnoreRhosts, sX11Forwarding, sX11DisplayOffset, |
| 207 | sStrictModes, sEmptyPasswd, sRandomSeedFile, sKeepAlives, sCheckMail, |
Damien Miller | 50a41ed | 2000-10-16 12:14:42 +1100 | [diff] [blame] | 208 | sUseLogin, sAllowTcpForwarding, |
| 209 | sAllowUsers, sDenyUsers, sAllowGroups, sDenyGroups, |
Damien Miller | 0bc1bd8 | 2000-11-13 22:57:25 +1100 | [diff] [blame] | 210 | sIgnoreUserKnownHosts, sCiphers, sProtocol, sPidFile, |
| 211 | sGatewayPorts, sPubkeyAuthentication, sXAuthLocation, sSubsystem, sMaxStartups, |
Ben Lindstrom | 48bd7c1 | 2001-01-09 00:35:42 +0000 | [diff] [blame] | 212 | sBanner |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 213 | } ServerOpCodes; |
| 214 | |
| 215 | /* Textual representation of the tokens. */ |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 216 | static struct { |
| 217 | const char *name; |
| 218 | ServerOpCodes opcode; |
| 219 | } keywords[] = { |
| 220 | { "port", sPort }, |
| 221 | { "hostkey", sHostKeyFile }, |
Damien Miller | 0bc1bd8 | 2000-11-13 22:57:25 +1100 | [diff] [blame] | 222 | { "hostdsakey", sHostKeyFile }, /* alias */ |
Damien Miller | 6f83b8e | 2000-05-02 09:23:45 +1000 | [diff] [blame] | 223 | { "pidfile", sPidFile }, |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 224 | { "serverkeybits", sServerKeyBits }, |
| 225 | { "logingracetime", sLoginGraceTime }, |
| 226 | { "keyregenerationinterval", sKeyRegenerationTime }, |
| 227 | { "permitrootlogin", sPermitRootLogin }, |
| 228 | { "syslogfacility", sLogFacility }, |
| 229 | { "loglevel", sLogLevel }, |
| 230 | { "rhostsauthentication", sRhostsAuthentication }, |
| 231 | { "rhostsrsaauthentication", sRhostsRSAAuthentication }, |
| 232 | { "rsaauthentication", sRSAAuthentication }, |
Damien Miller | 0bc1bd8 | 2000-11-13 22:57:25 +1100 | [diff] [blame] | 233 | { "pubkeyauthentication", sPubkeyAuthentication }, |
| 234 | { "dsaauthentication", sPubkeyAuthentication }, /* alias */ |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 235 | #ifdef KRB4 |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 236 | { "kerberosauthentication", sKerberosAuthentication }, |
| 237 | { "kerberosorlocalpasswd", sKerberosOrLocalPasswd }, |
| 238 | { "kerberosticketcleanup", sKerberosTicketCleanup }, |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 239 | #endif |
| 240 | #ifdef AFS |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 241 | { "kerberostgtpassing", sKerberosTgtPassing }, |
| 242 | { "afstokenpassing", sAFSTokenPassing }, |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 243 | #endif |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 244 | { "passwordauthentication", sPasswordAuthentication }, |
Damien Miller | 874d77b | 2000-10-14 16:23:11 +1100 | [diff] [blame] | 245 | { "kbdinteractiveauthentication", sKbdInteractiveAuthentication }, |
Ben Lindstrom | 95fb2dd | 2001-01-23 03:12:10 +0000 | [diff] [blame] | 246 | { "challengeresponseauthentication", sChallengeResponseAuthentication }, |
| 247 | { "skeyauthentication", sChallengeResponseAuthentication }, /* alias */ |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 248 | { "checkmail", sCheckMail }, |
| 249 | { "listenaddress", sListenAddress }, |
| 250 | { "printmotd", sPrintMotd }, |
| 251 | { "ignorerhosts", sIgnoreRhosts }, |
| 252 | { "ignoreuserknownhosts", sIgnoreUserKnownHosts }, |
| 253 | { "x11forwarding", sX11Forwarding }, |
| 254 | { "x11displayoffset", sX11DisplayOffset }, |
Damien Miller | d3a1857 | 2000-06-07 19:55:44 +1000 | [diff] [blame] | 255 | { "xauthlocation", sXAuthLocation }, |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 256 | { "strictmodes", sStrictModes }, |
| 257 | { "permitemptypasswords", sEmptyPasswd }, |
| 258 | { "uselogin", sUseLogin }, |
| 259 | { "randomseed", sRandomSeedFile }, |
| 260 | { "keepalive", sKeepAlives }, |
Damien Miller | 50a41ed | 2000-10-16 12:14:42 +1100 | [diff] [blame] | 261 | { "allowtcpforwarding", sAllowTcpForwarding }, |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 262 | { "allowusers", sAllowUsers }, |
| 263 | { "denyusers", sDenyUsers }, |
| 264 | { "allowgroups", sAllowGroups }, |
| 265 | { "denygroups", sDenyGroups }, |
Damien Miller | 7892879 | 2000-04-12 20:17:38 +1000 | [diff] [blame] | 266 | { "ciphers", sCiphers }, |
| 267 | { "protocol", sProtocol }, |
Damien Miller | e247cc4 | 2000-05-07 12:03:14 +1000 | [diff] [blame] | 268 | { "gatewayports", sGatewayPorts }, |
Damien Miller | f6d9e22 | 2000-06-18 14:50:44 +1000 | [diff] [blame] | 269 | { "subsystem", sSubsystem }, |
Damien Miller | 3702396 | 2000-07-11 17:31:38 +1000 | [diff] [blame] | 270 | { "maxstartups", sMaxStartups }, |
Ben Lindstrom | 48bd7c1 | 2001-01-09 00:35:42 +0000 | [diff] [blame] | 271 | { "banner", sBanner }, |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 272 | { NULL, 0 } |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 273 | }; |
| 274 | |
Damien Miller | 5428f64 | 1999-11-25 11:54:57 +1100 | [diff] [blame] | 275 | /* |
| 276 | * Returns the number of the token pointed to by cp of length len. Never |
| 277 | * returns if the token is not known. |
| 278 | */ |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 279 | |
Damien Miller | 4af5130 | 2000-04-16 11:18:38 +1000 | [diff] [blame] | 280 | static ServerOpCodes |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 281 | parse_token(const char *cp, const char *filename, |
| 282 | int linenum) |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 283 | { |
Ben Lindstrom | 46c1622 | 2000-12-22 01:43:59 +0000 | [diff] [blame] | 284 | u_int i; |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 285 | |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 286 | for (i = 0; keywords[i].name; i++) |
Damien Miller | 5428f64 | 1999-11-25 11:54:57 +1100 | [diff] [blame] | 287 | if (strcasecmp(cp, keywords[i].name) == 0) |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 288 | return keywords[i].opcode; |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 289 | |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 290 | fprintf(stderr, "%s: line %d: Bad configuration option: %s\n", |
| 291 | filename, linenum, cp); |
| 292 | return sBadOption; |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 293 | } |
| 294 | |
Damien Miller | 34132e5 | 2000-01-14 15:45:46 +1100 | [diff] [blame] | 295 | /* |
| 296 | * add listen address |
| 297 | */ |
Damien Miller | 4af5130 | 2000-04-16 11:18:38 +1000 | [diff] [blame] | 298 | void |
Damien Miller | 34132e5 | 2000-01-14 15:45:46 +1100 | [diff] [blame] | 299 | add_listen_addr(ServerOptions *options, char *addr) |
| 300 | { |
Damien Miller | 34132e5 | 2000-01-14 15:45:46 +1100 | [diff] [blame] | 301 | struct addrinfo hints, *ai, *aitop; |
| 302 | char strport[NI_MAXSERV]; |
| 303 | int gaierr; |
| 304 | int i; |
| 305 | |
| 306 | if (options->num_ports == 0) |
| 307 | options->ports[options->num_ports++] = SSH_DEFAULT_PORT; |
| 308 | for (i = 0; i < options->num_ports; i++) { |
| 309 | memset(&hints, 0, sizeof(hints)); |
| 310 | hints.ai_family = IPv4or6; |
| 311 | hints.ai_socktype = SOCK_STREAM; |
| 312 | hints.ai_flags = (addr == NULL) ? AI_PASSIVE : 0; |
| 313 | snprintf(strport, sizeof strport, "%d", options->ports[i]); |
| 314 | if ((gaierr = getaddrinfo(addr, strport, &hints, &aitop)) != 0) |
| 315 | fatal("bad addr or host: %s (%s)\n", |
| 316 | addr ? addr : "<NULL>", |
| 317 | gai_strerror(gaierr)); |
| 318 | for (ai = aitop; ai->ai_next; ai = ai->ai_next) |
| 319 | ; |
| 320 | ai->ai_next = options->listen_addrs; |
| 321 | options->listen_addrs = aitop; |
| 322 | } |
| 323 | } |
| 324 | |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 325 | /* Reads the server configuration file. */ |
| 326 | |
Damien Miller | 4af5130 | 2000-04-16 11:18:38 +1000 | [diff] [blame] | 327 | void |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 328 | read_server_config(ServerOptions *options, const char *filename) |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 329 | { |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 330 | FILE *f; |
| 331 | char line[1024]; |
Damien Miller | 3702396 | 2000-07-11 17:31:38 +1000 | [diff] [blame] | 332 | char *cp, **charptr, *arg; |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 333 | int linenum, *intptr, value; |
| 334 | int bad_options = 0; |
| 335 | ServerOpCodes opcode; |
Damien Miller | f6d9e22 | 2000-06-18 14:50:44 +1000 | [diff] [blame] | 336 | int i; |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 337 | |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 338 | f = fopen(filename, "r"); |
| 339 | if (!f) { |
| 340 | perror(filename); |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 341 | exit(1); |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 342 | } |
| 343 | linenum = 0; |
| 344 | while (fgets(line, sizeof(line), f)) { |
| 345 | linenum++; |
Damien Miller | be484b5 | 2000-07-15 14:14:16 +1000 | [diff] [blame] | 346 | cp = line; |
| 347 | arg = strdelim(&cp); |
| 348 | /* Ignore leading whitespace */ |
| 349 | if (*arg == '\0') |
| 350 | arg = strdelim(&cp); |
Ben Lindstrom | 226cfa0 | 2001-01-22 05:34:40 +0000 | [diff] [blame] | 351 | if (!arg || !*arg || *arg == '#') |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 352 | continue; |
Damien Miller | 0bc1bd8 | 2000-11-13 22:57:25 +1100 | [diff] [blame] | 353 | intptr = NULL; |
| 354 | charptr = NULL; |
Damien Miller | 3702396 | 2000-07-11 17:31:38 +1000 | [diff] [blame] | 355 | opcode = parse_token(arg, filename, linenum); |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 356 | switch (opcode) { |
| 357 | case sBadOption: |
| 358 | bad_options++; |
| 359 | continue; |
| 360 | case sPort: |
Damien Miller | 34132e5 | 2000-01-14 15:45:46 +1100 | [diff] [blame] | 361 | /* ignore ports from configfile if cmdline specifies ports */ |
| 362 | if (options->ports_from_cmdline) |
| 363 | continue; |
| 364 | if (options->listen_addrs != NULL) |
| 365 | fatal("%s line %d: ports must be specified before " |
| 366 | "ListenAdress.\n", filename, linenum); |
| 367 | if (options->num_ports >= MAX_PORTS) |
| 368 | fatal("%s line %d: too many ports.\n", |
Damien Miller | 4af5130 | 2000-04-16 11:18:38 +1000 | [diff] [blame] | 369 | filename, linenum); |
Damien Miller | be484b5 | 2000-07-15 14:14:16 +1000 | [diff] [blame] | 370 | arg = strdelim(&cp); |
Damien Miller | 3702396 | 2000-07-11 17:31:38 +1000 | [diff] [blame] | 371 | if (!arg || *arg == '\0') |
Damien Miller | 34132e5 | 2000-01-14 15:45:46 +1100 | [diff] [blame] | 372 | fatal("%s line %d: missing port number.\n", |
| 373 | filename, linenum); |
Damien Miller | 3702396 | 2000-07-11 17:31:38 +1000 | [diff] [blame] | 374 | options->ports[options->num_ports++] = atoi(arg); |
Damien Miller | 34132e5 | 2000-01-14 15:45:46 +1100 | [diff] [blame] | 375 | break; |
| 376 | |
| 377 | case sServerKeyBits: |
| 378 | intptr = &options->server_key_bits; |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 379 | parse_int: |
Damien Miller | be484b5 | 2000-07-15 14:14:16 +1000 | [diff] [blame] | 380 | arg = strdelim(&cp); |
Damien Miller | 3702396 | 2000-07-11 17:31:38 +1000 | [diff] [blame] | 381 | if (!arg || *arg == '\0') { |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 382 | fprintf(stderr, "%s line %d: missing integer value.\n", |
| 383 | filename, linenum); |
| 384 | exit(1); |
| 385 | } |
Damien Miller | 3702396 | 2000-07-11 17:31:38 +1000 | [diff] [blame] | 386 | value = atoi(arg); |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 387 | if (*intptr == -1) |
| 388 | *intptr = value; |
| 389 | break; |
Damien Miller | 3226509 | 1999-11-12 11:33:04 +1100 | [diff] [blame] | 390 | |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 391 | case sLoginGraceTime: |
| 392 | intptr = &options->login_grace_time; |
| 393 | goto parse_int; |
| 394 | |
| 395 | case sKeyRegenerationTime: |
| 396 | intptr = &options->key_regeneration_time; |
| 397 | goto parse_int; |
| 398 | |
| 399 | case sListenAddress: |
Damien Miller | be484b5 | 2000-07-15 14:14:16 +1000 | [diff] [blame] | 400 | arg = strdelim(&cp); |
Damien Miller | 3702396 | 2000-07-11 17:31:38 +1000 | [diff] [blame] | 401 | if (!arg || *arg == '\0') |
Damien Miller | 34132e5 | 2000-01-14 15:45:46 +1100 | [diff] [blame] | 402 | fatal("%s line %d: missing inet addr.\n", |
| 403 | filename, linenum); |
Damien Miller | 3702396 | 2000-07-11 17:31:38 +1000 | [diff] [blame] | 404 | add_listen_addr(options, arg); |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 405 | break; |
| 406 | |
| 407 | case sHostKeyFile: |
Damien Miller | 0bc1bd8 | 2000-11-13 22:57:25 +1100 | [diff] [blame] | 408 | intptr = &options->num_host_key_files; |
| 409 | if (*intptr >= MAX_HOSTKEYS) { |
| 410 | fprintf(stderr, "%s line %d: to many host keys specified (max %d).\n", |
| 411 | filename, linenum, MAX_HOSTKEYS); |
| 412 | exit(1); |
| 413 | } |
| 414 | charptr = &options->host_key_files[*intptr]; |
Damien Miller | d3a1857 | 2000-06-07 19:55:44 +1000 | [diff] [blame] | 415 | parse_filename: |
Damien Miller | be484b5 | 2000-07-15 14:14:16 +1000 | [diff] [blame] | 416 | arg = strdelim(&cp); |
Damien Miller | 3702396 | 2000-07-11 17:31:38 +1000 | [diff] [blame] | 417 | if (!arg || *arg == '\0') { |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 418 | fprintf(stderr, "%s line %d: missing file name.\n", |
Damien Miller | 6f83b8e | 2000-05-02 09:23:45 +1000 | [diff] [blame] | 419 | filename, linenum); |
| 420 | exit(1); |
| 421 | } |
Damien Miller | 0bc1bd8 | 2000-11-13 22:57:25 +1100 | [diff] [blame] | 422 | if (*charptr == NULL) { |
Damien Miller | 3702396 | 2000-07-11 17:31:38 +1000 | [diff] [blame] | 423 | *charptr = tilde_expand_filename(arg, getuid()); |
Damien Miller | 0bc1bd8 | 2000-11-13 22:57:25 +1100 | [diff] [blame] | 424 | /* increase optional counter */ |
| 425 | if (intptr != NULL) |
| 426 | *intptr = *intptr + 1; |
| 427 | } |
Damien Miller | 6f83b8e | 2000-05-02 09:23:45 +1000 | [diff] [blame] | 428 | break; |
| 429 | |
| 430 | case sPidFile: |
| 431 | charptr = &options->pid_file; |
Damien Miller | d3a1857 | 2000-06-07 19:55:44 +1000 | [diff] [blame] | 432 | goto parse_filename; |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 433 | |
| 434 | case sRandomSeedFile: |
| 435 | fprintf(stderr, "%s line %d: \"randomseed\" option is obsolete.\n", |
| 436 | filename, linenum); |
Damien Miller | be484b5 | 2000-07-15 14:14:16 +1000 | [diff] [blame] | 437 | arg = strdelim(&cp); |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 438 | break; |
| 439 | |
| 440 | case sPermitRootLogin: |
| 441 | intptr = &options->permit_root_login; |
Damien Miller | be484b5 | 2000-07-15 14:14:16 +1000 | [diff] [blame] | 442 | arg = strdelim(&cp); |
Damien Miller | 3702396 | 2000-07-11 17:31:38 +1000 | [diff] [blame] | 443 | if (!arg || *arg == '\0') { |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 444 | fprintf(stderr, "%s line %d: missing yes/without-password/no argument.\n", |
| 445 | filename, linenum); |
| 446 | exit(1); |
| 447 | } |
Damien Miller | 3702396 | 2000-07-11 17:31:38 +1000 | [diff] [blame] | 448 | if (strcmp(arg, "without-password") == 0) |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 449 | value = 2; |
Damien Miller | 3702396 | 2000-07-11 17:31:38 +1000 | [diff] [blame] | 450 | else if (strcmp(arg, "yes") == 0) |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 451 | value = 1; |
Damien Miller | 3702396 | 2000-07-11 17:31:38 +1000 | [diff] [blame] | 452 | else if (strcmp(arg, "no") == 0) |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 453 | value = 0; |
| 454 | else { |
| 455 | 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] | 456 | filename, linenum, arg); |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 457 | exit(1); |
| 458 | } |
| 459 | if (*intptr == -1) |
| 460 | *intptr = value; |
| 461 | break; |
| 462 | |
| 463 | case sIgnoreRhosts: |
| 464 | intptr = &options->ignore_rhosts; |
| 465 | parse_flag: |
Damien Miller | be484b5 | 2000-07-15 14:14:16 +1000 | [diff] [blame] | 466 | arg = strdelim(&cp); |
Damien Miller | 3702396 | 2000-07-11 17:31:38 +1000 | [diff] [blame] | 467 | if (!arg || *arg == '\0') { |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 468 | fprintf(stderr, "%s line %d: missing yes/no argument.\n", |
| 469 | filename, linenum); |
| 470 | exit(1); |
| 471 | } |
Damien Miller | 3702396 | 2000-07-11 17:31:38 +1000 | [diff] [blame] | 472 | if (strcmp(arg, "yes") == 0) |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 473 | value = 1; |
Damien Miller | 3702396 | 2000-07-11 17:31:38 +1000 | [diff] [blame] | 474 | else if (strcmp(arg, "no") == 0) |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 475 | value = 0; |
| 476 | else { |
| 477 | fprintf(stderr, "%s line %d: Bad yes/no argument: %s\n", |
Damien Miller | 3702396 | 2000-07-11 17:31:38 +1000 | [diff] [blame] | 478 | filename, linenum, arg); |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 479 | exit(1); |
| 480 | } |
| 481 | if (*intptr == -1) |
| 482 | *intptr = value; |
| 483 | break; |
| 484 | |
| 485 | case sIgnoreUserKnownHosts: |
| 486 | intptr = &options->ignore_user_known_hosts; |
Damien Miller | 98c7ad6 | 2000-03-09 21:27:49 +1100 | [diff] [blame] | 487 | goto parse_flag; |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 488 | |
| 489 | case sRhostsAuthentication: |
| 490 | intptr = &options->rhosts_authentication; |
| 491 | goto parse_flag; |
| 492 | |
| 493 | case sRhostsRSAAuthentication: |
| 494 | intptr = &options->rhosts_rsa_authentication; |
| 495 | goto parse_flag; |
| 496 | |
| 497 | case sRSAAuthentication: |
| 498 | intptr = &options->rsa_authentication; |
| 499 | goto parse_flag; |
| 500 | |
Damien Miller | 0bc1bd8 | 2000-11-13 22:57:25 +1100 | [diff] [blame] | 501 | case sPubkeyAuthentication: |
| 502 | intptr = &options->pubkey_authentication; |
Damien Miller | e247cc4 | 2000-05-07 12:03:14 +1000 | [diff] [blame] | 503 | goto parse_flag; |
| 504 | |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 505 | #ifdef KRB4 |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 506 | case sKerberosAuthentication: |
| 507 | intptr = &options->kerberos_authentication; |
| 508 | goto parse_flag; |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 509 | |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 510 | case sKerberosOrLocalPasswd: |
| 511 | intptr = &options->kerberos_or_local_passwd; |
| 512 | goto parse_flag; |
| 513 | |
| 514 | case sKerberosTicketCleanup: |
| 515 | intptr = &options->kerberos_ticket_cleanup; |
| 516 | goto parse_flag; |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 517 | #endif |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 518 | |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 519 | #ifdef AFS |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 520 | case sKerberosTgtPassing: |
| 521 | intptr = &options->kerberos_tgt_passing; |
| 522 | goto parse_flag; |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 523 | |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 524 | case sAFSTokenPassing: |
| 525 | intptr = &options->afs_token_passing; |
| 526 | goto parse_flag; |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 527 | #endif |
| 528 | |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 529 | case sPasswordAuthentication: |
| 530 | intptr = &options->password_authentication; |
| 531 | goto parse_flag; |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 532 | |
Damien Miller | 874d77b | 2000-10-14 16:23:11 +1100 | [diff] [blame] | 533 | case sKbdInteractiveAuthentication: |
| 534 | intptr = &options->kbd_interactive_authentication; |
| 535 | goto parse_flag; |
| 536 | |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 537 | case sCheckMail: |
| 538 | intptr = &options->check_mail; |
| 539 | goto parse_flag; |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 540 | |
Ben Lindstrom | 95fb2dd | 2001-01-23 03:12:10 +0000 | [diff] [blame] | 541 | case sChallengeResponseAuthentication: |
| 542 | intptr = &options->challenge_reponse_authentication; |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 543 | goto parse_flag; |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 544 | |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 545 | case sPrintMotd: |
| 546 | intptr = &options->print_motd; |
| 547 | goto parse_flag; |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 548 | |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 549 | case sX11Forwarding: |
| 550 | intptr = &options->x11_forwarding; |
| 551 | goto parse_flag; |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 552 | |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 553 | case sX11DisplayOffset: |
| 554 | intptr = &options->x11_display_offset; |
| 555 | goto parse_int; |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 556 | |
Damien Miller | d3a1857 | 2000-06-07 19:55:44 +1000 | [diff] [blame] | 557 | case sXAuthLocation: |
| 558 | charptr = &options->xauth_location; |
| 559 | goto parse_filename; |
| 560 | |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 561 | case sStrictModes: |
| 562 | intptr = &options->strict_modes; |
| 563 | goto parse_flag; |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 564 | |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 565 | case sKeepAlives: |
| 566 | intptr = &options->keepalives; |
| 567 | goto parse_flag; |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 568 | |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 569 | case sEmptyPasswd: |
| 570 | intptr = &options->permit_empty_passwd; |
| 571 | goto parse_flag; |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 572 | |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 573 | case sUseLogin: |
| 574 | intptr = &options->use_login; |
| 575 | goto parse_flag; |
Damien Miller | 5ce662a | 1999-11-11 17:57:39 +1100 | [diff] [blame] | 576 | |
Damien Miller | e247cc4 | 2000-05-07 12:03:14 +1000 | [diff] [blame] | 577 | case sGatewayPorts: |
| 578 | intptr = &options->gateway_ports; |
| 579 | goto parse_flag; |
| 580 | |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 581 | case sLogFacility: |
| 582 | intptr = (int *) &options->log_facility; |
Damien Miller | be484b5 | 2000-07-15 14:14:16 +1000 | [diff] [blame] | 583 | arg = strdelim(&cp); |
Damien Miller | 3702396 | 2000-07-11 17:31:38 +1000 | [diff] [blame] | 584 | value = log_facility_number(arg); |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 585 | if (value == (SyslogFacility) - 1) |
| 586 | fatal("%.200s line %d: unsupported log facility '%s'\n", |
Damien Miller | 3702396 | 2000-07-11 17:31:38 +1000 | [diff] [blame] | 587 | filename, linenum, arg ? arg : "<NONE>"); |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 588 | if (*intptr == -1) |
| 589 | *intptr = (SyslogFacility) value; |
| 590 | break; |
| 591 | |
| 592 | case sLogLevel: |
| 593 | intptr = (int *) &options->log_level; |
Damien Miller | be484b5 | 2000-07-15 14:14:16 +1000 | [diff] [blame] | 594 | arg = strdelim(&cp); |
Damien Miller | 3702396 | 2000-07-11 17:31:38 +1000 | [diff] [blame] | 595 | value = log_level_number(arg); |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 596 | if (value == (LogLevel) - 1) |
| 597 | fatal("%.200s line %d: unsupported log level '%s'\n", |
Damien Miller | 3702396 | 2000-07-11 17:31:38 +1000 | [diff] [blame] | 598 | filename, linenum, arg ? arg : "<NONE>"); |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 599 | if (*intptr == -1) |
| 600 | *intptr = (LogLevel) value; |
| 601 | break; |
| 602 | |
Damien Miller | 50a41ed | 2000-10-16 12:14:42 +1100 | [diff] [blame] | 603 | case sAllowTcpForwarding: |
| 604 | intptr = &options->allow_tcp_forwarding; |
| 605 | goto parse_flag; |
| 606 | |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 607 | case sAllowUsers: |
Damien Miller | be484b5 | 2000-07-15 14:14:16 +1000 | [diff] [blame] | 608 | while ((arg = strdelim(&cp)) && *arg != '\0') { |
Damien Miller | 7892879 | 2000-04-12 20:17:38 +1000 | [diff] [blame] | 609 | if (options->num_allow_users >= MAX_ALLOW_USERS) |
| 610 | fatal("%s line %d: too many allow users.\n", |
| 611 | filename, linenum); |
Damien Miller | 3702396 | 2000-07-11 17:31:38 +1000 | [diff] [blame] | 612 | options->allow_users[options->num_allow_users++] = xstrdup(arg); |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 613 | } |
| 614 | break; |
| 615 | |
| 616 | case sDenyUsers: |
Damien Miller | be484b5 | 2000-07-15 14:14:16 +1000 | [diff] [blame] | 617 | while ((arg = strdelim(&cp)) && *arg != '\0') { |
Damien Miller | 7892879 | 2000-04-12 20:17:38 +1000 | [diff] [blame] | 618 | if (options->num_deny_users >= MAX_DENY_USERS) |
| 619 | fatal( "%s line %d: too many deny users.\n", |
| 620 | filename, linenum); |
Damien Miller | 3702396 | 2000-07-11 17:31:38 +1000 | [diff] [blame] | 621 | options->deny_users[options->num_deny_users++] = xstrdup(arg); |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 622 | } |
| 623 | break; |
| 624 | |
| 625 | case sAllowGroups: |
Damien Miller | be484b5 | 2000-07-15 14:14:16 +1000 | [diff] [blame] | 626 | while ((arg = strdelim(&cp)) && *arg != '\0') { |
Damien Miller | 7892879 | 2000-04-12 20:17:38 +1000 | [diff] [blame] | 627 | if (options->num_allow_groups >= MAX_ALLOW_GROUPS) |
| 628 | fatal("%s line %d: too many allow groups.\n", |
| 629 | filename, linenum); |
Damien Miller | 3702396 | 2000-07-11 17:31:38 +1000 | [diff] [blame] | 630 | options->allow_groups[options->num_allow_groups++] = xstrdup(arg); |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 631 | } |
| 632 | break; |
| 633 | |
| 634 | case sDenyGroups: |
Damien Miller | be484b5 | 2000-07-15 14:14:16 +1000 | [diff] [blame] | 635 | while ((arg = strdelim(&cp)) && *arg != '\0') { |
Damien Miller | 7892879 | 2000-04-12 20:17:38 +1000 | [diff] [blame] | 636 | if (options->num_deny_groups >= MAX_DENY_GROUPS) |
| 637 | fatal("%s line %d: too many deny groups.\n", |
| 638 | filename, linenum); |
Damien Miller | 3702396 | 2000-07-11 17:31:38 +1000 | [diff] [blame] | 639 | options->deny_groups[options->num_deny_groups++] = xstrdup(arg); |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 640 | } |
| 641 | break; |
| 642 | |
Damien Miller | 7892879 | 2000-04-12 20:17:38 +1000 | [diff] [blame] | 643 | case sCiphers: |
Damien Miller | be484b5 | 2000-07-15 14:14:16 +1000 | [diff] [blame] | 644 | arg = strdelim(&cp); |
Damien Miller | 3702396 | 2000-07-11 17:31:38 +1000 | [diff] [blame] | 645 | if (!arg || *arg == '\0') |
Damien Miller | b1715dc | 2000-05-30 13:44:51 +1000 | [diff] [blame] | 646 | fatal("%s line %d: Missing argument.", filename, linenum); |
Damien Miller | 3702396 | 2000-07-11 17:31:38 +1000 | [diff] [blame] | 647 | if (!ciphers_valid(arg)) |
Damien Miller | 30c3d42 | 2000-05-09 11:02:59 +1000 | [diff] [blame] | 648 | fatal("%s line %d: Bad SSH2 cipher spec '%s'.", |
Damien Miller | 3702396 | 2000-07-11 17:31:38 +1000 | [diff] [blame] | 649 | filename, linenum, arg ? arg : "<NONE>"); |
Damien Miller | 7892879 | 2000-04-12 20:17:38 +1000 | [diff] [blame] | 650 | if (options->ciphers == NULL) |
Damien Miller | 3702396 | 2000-07-11 17:31:38 +1000 | [diff] [blame] | 651 | options->ciphers = xstrdup(arg); |
Damien Miller | 7892879 | 2000-04-12 20:17:38 +1000 | [diff] [blame] | 652 | break; |
| 653 | |
| 654 | case sProtocol: |
| 655 | intptr = &options->protocol; |
Damien Miller | be484b5 | 2000-07-15 14:14:16 +1000 | [diff] [blame] | 656 | arg = strdelim(&cp); |
Damien Miller | 3702396 | 2000-07-11 17:31:38 +1000 | [diff] [blame] | 657 | if (!arg || *arg == '\0') |
Damien Miller | b1715dc | 2000-05-30 13:44:51 +1000 | [diff] [blame] | 658 | fatal("%s line %d: Missing argument.", filename, linenum); |
Damien Miller | 3702396 | 2000-07-11 17:31:38 +1000 | [diff] [blame] | 659 | value = proto_spec(arg); |
Damien Miller | 7892879 | 2000-04-12 20:17:38 +1000 | [diff] [blame] | 660 | if (value == SSH_PROTO_UNKNOWN) |
| 661 | fatal("%s line %d: Bad protocol spec '%s'.", |
Damien Miller | 3702396 | 2000-07-11 17:31:38 +1000 | [diff] [blame] | 662 | filename, linenum, arg ? arg : "<NONE>"); |
Damien Miller | 7892879 | 2000-04-12 20:17:38 +1000 | [diff] [blame] | 663 | if (*intptr == SSH_PROTO_UNKNOWN) |
| 664 | *intptr = value; |
| 665 | break; |
| 666 | |
Damien Miller | f6d9e22 | 2000-06-18 14:50:44 +1000 | [diff] [blame] | 667 | case sSubsystem: |
| 668 | if(options->num_subsystems >= MAX_SUBSYSTEMS) { |
| 669 | fatal("%s line %d: too many subsystems defined.", |
| 670 | filename, linenum); |
| 671 | } |
Damien Miller | be484b5 | 2000-07-15 14:14:16 +1000 | [diff] [blame] | 672 | arg = strdelim(&cp); |
Damien Miller | 3702396 | 2000-07-11 17:31:38 +1000 | [diff] [blame] | 673 | if (!arg || *arg == '\0') |
Damien Miller | f6d9e22 | 2000-06-18 14:50:44 +1000 | [diff] [blame] | 674 | fatal("%s line %d: Missing subsystem name.", |
| 675 | filename, linenum); |
| 676 | for (i = 0; i < options->num_subsystems; i++) |
Damien Miller | 3702396 | 2000-07-11 17:31:38 +1000 | [diff] [blame] | 677 | if(strcmp(arg, options->subsystem_name[i]) == 0) |
Damien Miller | f6d9e22 | 2000-06-18 14:50:44 +1000 | [diff] [blame] | 678 | fatal("%s line %d: Subsystem '%s' already defined.", |
Damien Miller | 3702396 | 2000-07-11 17:31:38 +1000 | [diff] [blame] | 679 | filename, linenum, arg); |
| 680 | options->subsystem_name[options->num_subsystems] = xstrdup(arg); |
Damien Miller | be484b5 | 2000-07-15 14:14:16 +1000 | [diff] [blame] | 681 | arg = strdelim(&cp); |
Damien Miller | 3702396 | 2000-07-11 17:31:38 +1000 | [diff] [blame] | 682 | if (!arg || *arg == '\0') |
Damien Miller | f6d9e22 | 2000-06-18 14:50:44 +1000 | [diff] [blame] | 683 | fatal("%s line %d: Missing subsystem command.", |
| 684 | filename, linenum); |
Damien Miller | 3702396 | 2000-07-11 17:31:38 +1000 | [diff] [blame] | 685 | options->subsystem_command[options->num_subsystems] = xstrdup(arg); |
Damien Miller | f6d9e22 | 2000-06-18 14:50:44 +1000 | [diff] [blame] | 686 | options->num_subsystems++; |
| 687 | break; |
| 688 | |
Damien Miller | 3702396 | 2000-07-11 17:31:38 +1000 | [diff] [blame] | 689 | case sMaxStartups: |
Damien Miller | 942da03 | 2000-08-18 13:59:06 +1000 | [diff] [blame] | 690 | arg = strdelim(&cp); |
| 691 | if (!arg || *arg == '\0') |
| 692 | fatal("%s line %d: Missing MaxStartups spec.", |
| 693 | filename, linenum); |
| 694 | if (sscanf(arg, "%d:%d:%d", |
| 695 | &options->max_startups_begin, |
| 696 | &options->max_startups_rate, |
| 697 | &options->max_startups) == 3) { |
| 698 | if (options->max_startups_begin > |
| 699 | options->max_startups || |
| 700 | options->max_startups_rate > 100 || |
| 701 | options->max_startups_rate < 1) |
| 702 | fatal("%s line %d: Illegal MaxStartups spec.", |
| 703 | filename, linenum); |
| 704 | break; |
| 705 | } |
Damien Miller | 3702396 | 2000-07-11 17:31:38 +1000 | [diff] [blame] | 706 | intptr = &options->max_startups; |
| 707 | goto parse_int; |
| 708 | |
Ben Lindstrom | 48bd7c1 | 2001-01-09 00:35:42 +0000 | [diff] [blame] | 709 | case sBanner: |
| 710 | charptr = &options->banner; |
| 711 | goto parse_filename; |
| 712 | |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 713 | default: |
| 714 | fprintf(stderr, "%s line %d: Missing handler for opcode %s (%d)\n", |
Damien Miller | 3702396 | 2000-07-11 17:31:38 +1000 | [diff] [blame] | 715 | filename, linenum, arg, opcode); |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 716 | exit(1); |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 717 | } |
Damien Miller | be484b5 | 2000-07-15 14:14:16 +1000 | [diff] [blame] | 718 | if ((arg = strdelim(&cp)) != NULL && *arg != '\0') { |
Damien Miller | 3702396 | 2000-07-11 17:31:38 +1000 | [diff] [blame] | 719 | fprintf(stderr, |
| 720 | "%s line %d: garbage at end of line; \"%.200s\".\n", |
| 721 | filename, linenum, arg); |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 722 | exit(1); |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 723 | } |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 724 | } |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 725 | fclose(f); |
| 726 | if (bad_options > 0) { |
| 727 | fprintf(stderr, "%s: terminating, %d bad configuration options\n", |
| 728 | filename, bad_options); |
| 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 | } |