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Commit | Line | Data |
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8efc0c15 | 1 | /* |
5260325f | 2 | * Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland |
3 | * All rights reserved | |
6ae2364d | 4 | * |
bcbf86ec | 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". | |
5260325f | 10 | */ |
8efc0c15 | 11 | |
12 | #include "includes.h" | |
5c53a31e | 13 | RCSID("$OpenBSD: servconf.c,v 1.89 2001/08/16 19:18:34 jakob Exp $"); |
42f11eb2 | 14 | |
46d738cd | 15 | #if defined(KRB4) || defined(KRB5) |
42f11eb2 | 16 | #include <krb.h> |
17 | #endif | |
83f46621 | 18 | #ifdef AFS |
19 | #include <kafs.h> | |
20 | #endif | |
8efc0c15 | 21 | |
22 | #include "ssh.h" | |
42f11eb2 | 23 | #include "log.h" |
8efc0c15 | 24 | #include "servconf.h" |
25 | #include "xmalloc.h" | |
a8be9f80 | 26 | #include "compat.h" |
42f11eb2 | 27 | #include "pathnames.h" |
28 | #include "tildexpand.h" | |
29 | #include "misc.h" | |
30 | #include "cipher.h" | |
b2552997 | 31 | #include "kex.h" |
32 | #include "mac.h" | |
42f11eb2 | 33 | |
396c147e | 34 | static void add_listen_addr(ServerOptions *, char *, u_short); |
35 | static void add_one_listen_addr(ServerOptions *, char *, u_short); | |
48e671d5 | 36 | |
42f11eb2 | 37 | /* AF_UNSPEC or AF_INET or AF_INET6 */ |
38 | extern int IPv4or6; | |
39 | ||
8efc0c15 | 40 | /* Initializes the server options to their default values. */ |
41 | ||
6ae2364d | 42 | void |
5260325f | 43 | initialize_server_options(ServerOptions *options) |
8efc0c15 | 44 | { |
5260325f | 45 | memset(options, 0, sizeof(*options)); |
48e671d5 | 46 | options->num_ports = 0; |
47 | options->ports_from_cmdline = 0; | |
48 | options->listen_addrs = NULL; | |
fa08c86b | 49 | options->num_host_key_files = 0; |
0fbe8c74 | 50 | options->pid_file = NULL; |
5260325f | 51 | options->server_key_bits = -1; |
52 | options->login_grace_time = -1; | |
53 | options->key_regeneration_time = -1; | |
15853e93 | 54 | options->permit_root_login = PERMIT_NOT_SET; |
5260325f | 55 | options->ignore_rhosts = -1; |
56 | options->ignore_user_known_hosts = -1; | |
57 | options->print_motd = -1; | |
4f4648f9 | 58 | options->print_lastlog = -1; |
5260325f | 59 | options->x11_forwarding = -1; |
60 | options->x11_display_offset = -1; | |
fa649821 | 61 | options->xauth_location = NULL; |
5260325f | 62 | options->strict_modes = -1; |
63 | options->keepalives = -1; | |
64 | options->log_facility = (SyslogFacility) - 1; | |
65 | options->log_level = (LogLevel) - 1; | |
66 | options->rhosts_authentication = -1; | |
67 | options->rhosts_rsa_authentication = -1; | |
8002af61 | 68 | options->hostbased_authentication = -1; |
69 | options->hostbased_uses_name_from_packet_only = -1; | |
5260325f | 70 | options->rsa_authentication = -1; |
fa08c86b | 71 | options->pubkey_authentication = -1; |
ced49be2 | 72 | #if defined(KRB4) || defined(KRB5) |
5260325f | 73 | options->kerberos_authentication = -1; |
74 | options->kerberos_or_local_passwd = -1; | |
75 | options->kerberos_ticket_cleanup = -1; | |
8efc0c15 | 76 | #endif |
ced49be2 | 77 | #if defined(AFS) || defined(KRB5) |
5260325f | 78 | options->kerberos_tgt_passing = -1; |
ced49be2 | 79 | #endif |
80 | #ifdef AFS | |
5260325f | 81 | options->afs_token_passing = -1; |
8efc0c15 | 82 | #endif |
5260325f | 83 | options->password_authentication = -1; |
94ec8c6b | 84 | options->kbd_interactive_authentication = -1; |
5ba55ada | 85 | options->challenge_response_authentication = -1; |
5260325f | 86 | options->permit_empty_passwd = -1; |
87 | options->use_login = -1; | |
33de75a3 | 88 | options->allow_tcp_forwarding = -1; |
5260325f | 89 | options->num_allow_users = 0; |
90 | options->num_deny_users = 0; | |
91 | options->num_allow_groups = 0; | |
92 | options->num_deny_groups = 0; | |
a8be9f80 | 93 | options->ciphers = NULL; |
b2552997 | 94 | options->macs = NULL; |
a8be9f80 | 95 | options->protocol = SSH_PROTO_UNKNOWN; |
1d1ffb87 | 96 | options->gateway_ports = -1; |
38c295d6 | 97 | options->num_subsystems = 0; |
c345cf9d | 98 | options->max_startups_begin = -1; |
99 | options->max_startups_rate = -1; | |
089fbbd2 | 100 | options->max_startups = -1; |
eea39c02 | 101 | options->banner = NULL; |
61e96248 | 102 | options->reverse_mapping_check = -1; |
3ffc6336 | 103 | options->client_alive_interval = -1; |
104 | options->client_alive_count_max = -1; | |
c8445989 | 105 | options->authorized_keys_file = NULL; |
106 | options->authorized_keys_file2 = NULL; | |
10f72868 | 107 | options->pam_authentication_via_kbd_int = -1; |
8efc0c15 | 108 | } |
109 | ||
6ae2364d | 110 | void |
5260325f | 111 | fill_default_server_options(ServerOptions *options) |
8efc0c15 | 112 | { |
fa08c86b | 113 | if (options->protocol == SSH_PROTO_UNKNOWN) |
114 | options->protocol = SSH_PROTO_1|SSH_PROTO_2; | |
115 | if (options->num_host_key_files == 0) { | |
116 | /* fill default hostkeys for protocols */ | |
117 | if (options->protocol & SSH_PROTO_1) | |
42f11eb2 | 118 | options->host_key_files[options->num_host_key_files++] = _PATH_HOST_KEY_FILE; |
fa08c86b | 119 | if (options->protocol & SSH_PROTO_2) |
42f11eb2 | 120 | options->host_key_files[options->num_host_key_files++] = _PATH_HOST_DSA_KEY_FILE; |
fa08c86b | 121 | } |
48e671d5 | 122 | if (options->num_ports == 0) |
123 | options->ports[options->num_ports++] = SSH_DEFAULT_PORT; | |
124 | if (options->listen_addrs == NULL) | |
2d2a2c65 | 125 | add_listen_addr(options, NULL, 0); |
0fbe8c74 | 126 | if (options->pid_file == NULL) |
42f11eb2 | 127 | options->pid_file = _PATH_SSH_DAEMON_PID_FILE; |
5260325f | 128 | if (options->server_key_bits == -1) |
129 | options->server_key_bits = 768; | |
130 | if (options->login_grace_time == -1) | |
131 | options->login_grace_time = 600; | |
132 | if (options->key_regeneration_time == -1) | |
133 | options->key_regeneration_time = 3600; | |
15853e93 | 134 | if (options->permit_root_login == PERMIT_NOT_SET) |
135 | options->permit_root_login = PERMIT_YES; | |
5260325f | 136 | if (options->ignore_rhosts == -1) |
c8d54615 | 137 | options->ignore_rhosts = 1; |
5260325f | 138 | if (options->ignore_user_known_hosts == -1) |
139 | options->ignore_user_known_hosts = 0; | |
5260325f | 140 | if (options->print_motd == -1) |
141 | options->print_motd = 1; | |
4f4648f9 | 142 | if (options->print_lastlog == -1) |
143 | options->print_lastlog = 1; | |
5260325f | 144 | if (options->x11_forwarding == -1) |
c8d54615 | 145 | options->x11_forwarding = 0; |
5260325f | 146 | if (options->x11_display_offset == -1) |
c8d54615 | 147 | options->x11_display_offset = 10; |
fd9ede94 | 148 | #ifdef _PATH_XAUTH |
fa649821 | 149 | if (options->xauth_location == NULL) |
fd9ede94 | 150 | options->xauth_location = _PATH_XAUTH; |
151 | #endif | |
5260325f | 152 | if (options->strict_modes == -1) |
153 | options->strict_modes = 1; | |
154 | if (options->keepalives == -1) | |
155 | options->keepalives = 1; | |
156 | if (options->log_facility == (SyslogFacility) (-1)) | |
157 | options->log_facility = SYSLOG_FACILITY_AUTH; | |
158 | if (options->log_level == (LogLevel) (-1)) | |
59c97189 | 159 | options->log_level = SYSLOG_LEVEL_INFO; |
5260325f | 160 | if (options->rhosts_authentication == -1) |
161 | options->rhosts_authentication = 0; | |
162 | if (options->rhosts_rsa_authentication == -1) | |
c8d54615 | 163 | options->rhosts_rsa_authentication = 0; |
8002af61 | 164 | if (options->hostbased_authentication == -1) |
165 | options->hostbased_authentication = 0; | |
166 | if (options->hostbased_uses_name_from_packet_only == -1) | |
167 | options->hostbased_uses_name_from_packet_only = 0; | |
5260325f | 168 | if (options->rsa_authentication == -1) |
169 | options->rsa_authentication = 1; | |
fa08c86b | 170 | if (options->pubkey_authentication == -1) |
171 | options->pubkey_authentication = 1; | |
ced49be2 | 172 | #if defined(KRB4) || defined(KRB5) |
5260325f | 173 | if (options->kerberos_authentication == -1) |
174 | options->kerberos_authentication = (access(KEYFILE, R_OK) == 0); | |
175 | if (options->kerberos_or_local_passwd == -1) | |
176 | options->kerberos_or_local_passwd = 1; | |
177 | if (options->kerberos_ticket_cleanup == -1) | |
178 | options->kerberos_ticket_cleanup = 1; | |
ced49be2 | 179 | #endif |
180 | #if defined(AFS) || defined(KRB5) | |
5260325f | 181 | if (options->kerberos_tgt_passing == -1) |
182 | options->kerberos_tgt_passing = 0; | |
ced49be2 | 183 | #endif |
184 | #ifdef AFS | |
5260325f | 185 | if (options->afs_token_passing == -1) |
186 | options->afs_token_passing = k_hasafs(); | |
ced49be2 | 187 | #endif |
5260325f | 188 | if (options->password_authentication == -1) |
189 | options->password_authentication = 1; | |
94ec8c6b | 190 | if (options->kbd_interactive_authentication == -1) |
191 | options->kbd_interactive_authentication = 0; | |
5ba55ada | 192 | if (options->challenge_response_authentication == -1) |
193 | options->challenge_response_authentication = 1; | |
5260325f | 194 | if (options->permit_empty_passwd == -1) |
c8d54615 | 195 | options->permit_empty_passwd = 0; |
5260325f | 196 | if (options->use_login == -1) |
197 | options->use_login = 0; | |
33de75a3 | 198 | if (options->allow_tcp_forwarding == -1) |
199 | options->allow_tcp_forwarding = 1; | |
1d1ffb87 | 200 | if (options->gateway_ports == -1) |
201 | options->gateway_ports = 0; | |
089fbbd2 | 202 | if (options->max_startups == -1) |
203 | options->max_startups = 10; | |
c345cf9d | 204 | if (options->max_startups_rate == -1) |
205 | options->max_startups_rate = 100; /* 100% */ | |
206 | if (options->max_startups_begin == -1) | |
207 | options->max_startups_begin = options->max_startups; | |
61e96248 | 208 | if (options->reverse_mapping_check == -1) |
209 | options->reverse_mapping_check = 0; | |
3ffc6336 | 210 | if (options->client_alive_interval == -1) |
211 | options->client_alive_interval = 0; | |
212 | if (options->client_alive_count_max == -1) | |
213 | options->client_alive_count_max = 3; | |
c8445989 | 214 | if (options->authorized_keys_file == NULL) |
70cd360d | 215 | options->authorized_keys_file = _PATH_SSH_USER_PERMITTED_KEYS; |
c8445989 | 216 | if (options->authorized_keys_file2 == NULL) |
70cd360d | 217 | options->authorized_keys_file2 = _PATH_SSH_USER_PERMITTED_KEYS2; |
10f72868 | 218 | if (options->pam_authentication_via_kbd_int == -1) |
219 | options->pam_authentication_via_kbd_int = 0; | |
8efc0c15 | 220 | } |
221 | ||
8efc0c15 | 222 | /* Keyword tokens. */ |
5260325f | 223 | typedef enum { |
224 | sBadOption, /* == unknown option */ | |
225 | sPort, sHostKeyFile, sServerKeyBits, sLoginGraceTime, sKeyRegenerationTime, | |
226 | sPermitRootLogin, sLogFacility, sLogLevel, | |
227 | sRhostsAuthentication, sRhostsRSAAuthentication, sRSAAuthentication, | |
ced49be2 | 228 | #if defined(KRB4) || defined(KRB5) |
5260325f | 229 | sKerberosAuthentication, sKerberosOrLocalPasswd, sKerberosTicketCleanup, |
8efc0c15 | 230 | #endif |
ced49be2 | 231 | #if defined(AFS) || defined(KRB5) |
232 | sKerberosTgtPassing, | |
233 | #endif | |
8efc0c15 | 234 | #ifdef AFS |
ced49be2 | 235 | sAFSTokenPassing, |
8efc0c15 | 236 | #endif |
d464095c | 237 | sChallengeResponseAuthentication, |
94ec8c6b | 238 | sPasswordAuthentication, sKbdInteractiveAuthentication, sListenAddress, |
4f4648f9 | 239 | sPrintMotd, sPrintLastLog, sIgnoreRhosts, |
240 | sX11Forwarding, sX11DisplayOffset, | |
5c53a31e | 241 | sStrictModes, sEmptyPasswd, sKeepAlives, |
33de75a3 | 242 | sUseLogin, sAllowTcpForwarding, |
243 | sAllowUsers, sDenyUsers, sAllowGroups, sDenyGroups, | |
b2552997 | 244 | sIgnoreUserKnownHosts, sCiphers, sMacs, sProtocol, sPidFile, |
fa08c86b | 245 | sGatewayPorts, sPubkeyAuthentication, sXAuthLocation, sSubsystem, sMaxStartups, |
8002af61 | 246 | sBanner, sReverseMappingCheck, sHostbasedAuthentication, |
3ffc6336 | 247 | sHostbasedUsesNameFromPacketOnly, sClientAliveInterval, |
c8445989 | 248 | sClientAliveCountMax, sAuthorizedKeysFile, sAuthorizedKeysFile2, |
5c53a31e | 249 | sDeprecated, sPAMAuthenticationViaKbdInt |
8efc0c15 | 250 | } ServerOpCodes; |
251 | ||
252 | /* Textual representation of the tokens. */ | |
5260325f | 253 | static struct { |
254 | const char *name; | |
255 | ServerOpCodes opcode; | |
256 | } keywords[] = { | |
257 | { "port", sPort }, | |
258 | { "hostkey", sHostKeyFile }, | |
fa08c86b | 259 | { "hostdsakey", sHostKeyFile }, /* alias */ |
2b87da3b | 260 | { "pidfile", sPidFile }, |
5260325f | 261 | { "serverkeybits", sServerKeyBits }, |
262 | { "logingracetime", sLoginGraceTime }, | |
263 | { "keyregenerationinterval", sKeyRegenerationTime }, | |
264 | { "permitrootlogin", sPermitRootLogin }, | |
265 | { "syslogfacility", sLogFacility }, | |
266 | { "loglevel", sLogLevel }, | |
267 | { "rhostsauthentication", sRhostsAuthentication }, | |
268 | { "rhostsrsaauthentication", sRhostsRSAAuthentication }, | |
8002af61 | 269 | { "hostbasedauthentication", sHostbasedAuthentication }, |
270 | { "hostbasedusesnamefrompacketonly", sHostbasedUsesNameFromPacketOnly }, | |
5260325f | 271 | { "rsaauthentication", sRSAAuthentication }, |
fa08c86b | 272 | { "pubkeyauthentication", sPubkeyAuthentication }, |
273 | { "dsaauthentication", sPubkeyAuthentication }, /* alias */ | |
ced49be2 | 274 | #if defined(KRB4) || defined(KRB5) |
5260325f | 275 | { "kerberosauthentication", sKerberosAuthentication }, |
276 | { "kerberosorlocalpasswd", sKerberosOrLocalPasswd }, | |
277 | { "kerberosticketcleanup", sKerberosTicketCleanup }, | |
8efc0c15 | 278 | #endif |
ced49be2 | 279 | #if defined(AFS) || defined(KRB5) |
5260325f | 280 | { "kerberostgtpassing", sKerberosTgtPassing }, |
ced49be2 | 281 | #endif |
282 | #ifdef AFS | |
5260325f | 283 | { "afstokenpassing", sAFSTokenPassing }, |
8efc0c15 | 284 | #endif |
5260325f | 285 | { "passwordauthentication", sPasswordAuthentication }, |
94ec8c6b | 286 | { "kbdinteractiveauthentication", sKbdInteractiveAuthentication }, |
d464095c | 287 | { "challengeresponseauthentication", sChallengeResponseAuthentication }, |
288 | { "skeyauthentication", sChallengeResponseAuthentication }, /* alias */ | |
5c53a31e | 289 | { "checkmail", sDeprecated }, |
5260325f | 290 | { "listenaddress", sListenAddress }, |
291 | { "printmotd", sPrintMotd }, | |
4f4648f9 | 292 | { "printlastlog", sPrintLastLog }, |
5260325f | 293 | { "ignorerhosts", sIgnoreRhosts }, |
294 | { "ignoreuserknownhosts", sIgnoreUserKnownHosts }, | |
295 | { "x11forwarding", sX11Forwarding }, | |
296 | { "x11displayoffset", sX11DisplayOffset }, | |
fa649821 | 297 | { "xauthlocation", sXAuthLocation }, |
5260325f | 298 | { "strictmodes", sStrictModes }, |
299 | { "permitemptypasswords", sEmptyPasswd }, | |
300 | { "uselogin", sUseLogin }, | |
5260325f | 301 | { "keepalive", sKeepAlives }, |
33de75a3 | 302 | { "allowtcpforwarding", sAllowTcpForwarding }, |
5260325f | 303 | { "allowusers", sAllowUsers }, |
304 | { "denyusers", sDenyUsers }, | |
305 | { "allowgroups", sAllowGroups }, | |
306 | { "denygroups", sDenyGroups }, | |
a8be9f80 | 307 | { "ciphers", sCiphers }, |
b2552997 | 308 | { "macs", sMacs }, |
a8be9f80 | 309 | { "protocol", sProtocol }, |
1d1ffb87 | 310 | { "gatewayports", sGatewayPorts }, |
38c295d6 | 311 | { "subsystem", sSubsystem }, |
089fbbd2 | 312 | { "maxstartups", sMaxStartups }, |
eea39c02 | 313 | { "banner", sBanner }, |
61e96248 | 314 | { "reversemappingcheck", sReverseMappingCheck }, |
3ffc6336 | 315 | { "clientaliveinterval", sClientAliveInterval }, |
316 | { "clientalivecountmax", sClientAliveCountMax }, | |
c8445989 | 317 | { "authorizedkeysfile", sAuthorizedKeysFile }, |
318 | { "authorizedkeysfile2", sAuthorizedKeysFile2 }, | |
10f72868 | 319 | { "PAMAuthenticationViaKbdInt", sPAMAuthenticationViaKbdInt }, |
5260325f | 320 | { NULL, 0 } |
8efc0c15 | 321 | }; |
322 | ||
aa3378df | 323 | /* |
6be9a5e8 | 324 | * Returns the number of the token pointed to by cp or sBadOption. |
aa3378df | 325 | */ |
8efc0c15 | 326 | |
6ae2364d | 327 | static ServerOpCodes |
5260325f | 328 | parse_token(const char *cp, const char *filename, |
329 | int linenum) | |
8efc0c15 | 330 | { |
1e3b8b07 | 331 | u_int i; |
8efc0c15 | 332 | |
5260325f | 333 | for (i = 0; keywords[i].name; i++) |
aa3378df | 334 | if (strcasecmp(cp, keywords[i].name) == 0) |
5260325f | 335 | return keywords[i].opcode; |
8efc0c15 | 336 | |
b7c70970 | 337 | error("%s: line %d: Bad configuration option: %s", |
338 | filename, linenum, cp); | |
5260325f | 339 | return sBadOption; |
8efc0c15 | 340 | } |
341 | ||
396c147e | 342 | static void |
2d2a2c65 | 343 | add_listen_addr(ServerOptions *options, char *addr, u_short port) |
48e671d5 | 344 | { |
48e671d5 | 345 | int i; |
346 | ||
347 | if (options->num_ports == 0) | |
348 | options->ports[options->num_ports++] = SSH_DEFAULT_PORT; | |
2d2a2c65 | 349 | if (port == 0) |
d11c1288 | 350 | for (i = 0; i < options->num_ports; i++) |
351 | add_one_listen_addr(options, addr, options->ports[i]); | |
352 | else | |
2d2a2c65 | 353 | add_one_listen_addr(options, addr, port); |
d11c1288 | 354 | } |
355 | ||
396c147e | 356 | static void |
d11c1288 | 357 | add_one_listen_addr(ServerOptions *options, char *addr, u_short port) |
358 | { | |
359 | struct addrinfo hints, *ai, *aitop; | |
360 | char strport[NI_MAXSERV]; | |
361 | int gaierr; | |
362 | ||
363 | memset(&hints, 0, sizeof(hints)); | |
364 | hints.ai_family = IPv4or6; | |
365 | hints.ai_socktype = SOCK_STREAM; | |
366 | hints.ai_flags = (addr == NULL) ? AI_PASSIVE : 0; | |
367 | snprintf(strport, sizeof strport, "%d", port); | |
368 | if ((gaierr = getaddrinfo(addr, strport, &hints, &aitop)) != 0) | |
369 | fatal("bad addr or host: %s (%s)", | |
370 | addr ? addr : "<NULL>", | |
371 | gai_strerror(gaierr)); | |
372 | for (ai = aitop; ai->ai_next; ai = ai->ai_next) | |
373 | ; | |
374 | ai->ai_next = options->listen_addrs; | |
375 | options->listen_addrs = aitop; | |
48e671d5 | 376 | } |
377 | ||
8efc0c15 | 378 | /* Reads the server configuration file. */ |
379 | ||
6ae2364d | 380 | void |
5260325f | 381 | read_server_config(ServerOptions *options, const char *filename) |
8efc0c15 | 382 | { |
5260325f | 383 | FILE *f; |
384 | char line[1024]; | |
d11c1288 | 385 | char *cp, **charptr, *arg, *p; |
5260325f | 386 | int linenum, *intptr, value; |
387 | int bad_options = 0; | |
388 | ServerOpCodes opcode; | |
97de229c | 389 | int i, n; |
5260325f | 390 | |
391 | f = fopen(filename, "r"); | |
392 | if (!f) { | |
393 | perror(filename); | |
8efc0c15 | 394 | exit(1); |
5260325f | 395 | } |
396 | linenum = 0; | |
397 | while (fgets(line, sizeof(line), f)) { | |
398 | linenum++; | |
704b1659 | 399 | cp = line; |
400 | arg = strdelim(&cp); | |
401 | /* Ignore leading whitespace */ | |
402 | if (*arg == '\0') | |
403 | arg = strdelim(&cp); | |
42f11eb2 | 404 | if (!arg || !*arg || *arg == '#') |
5260325f | 405 | continue; |
fa08c86b | 406 | intptr = NULL; |
407 | charptr = NULL; | |
089fbbd2 | 408 | opcode = parse_token(arg, filename, linenum); |
5260325f | 409 | switch (opcode) { |
410 | case sBadOption: | |
411 | bad_options++; | |
412 | continue; | |
413 | case sPort: | |
48e671d5 | 414 | /* ignore ports from configfile if cmdline specifies ports */ |
415 | if (options->ports_from_cmdline) | |
416 | continue; | |
417 | if (options->listen_addrs != NULL) | |
418 | fatal("%s line %d: ports must be specified before " | |
c98cab9b | 419 | "ListenAdress.", filename, linenum); |
48e671d5 | 420 | if (options->num_ports >= MAX_PORTS) |
54b974dc | 421 | fatal("%s line %d: too many ports.", |
6ae2364d | 422 | filename, linenum); |
704b1659 | 423 | arg = strdelim(&cp); |
089fbbd2 | 424 | if (!arg || *arg == '\0') |
54b974dc | 425 | fatal("%s line %d: missing port number.", |
48e671d5 | 426 | filename, linenum); |
2d2a2c65 | 427 | options->ports[options->num_ports++] = a2port(arg); |
428 | if (options->ports[options->num_ports-1] == 0) | |
429 | fatal("%s line %d: Badly formatted port number.", | |
430 | filename, linenum); | |
48e671d5 | 431 | break; |
432 | ||
433 | case sServerKeyBits: | |
434 | intptr = &options->server_key_bits; | |
5260325f | 435 | parse_int: |
704b1659 | 436 | arg = strdelim(&cp); |
b7c70970 | 437 | if (!arg || *arg == '\0') |
438 | fatal("%s line %d: missing integer value.", | |
439 | filename, linenum); | |
089fbbd2 | 440 | value = atoi(arg); |
5260325f | 441 | if (*intptr == -1) |
442 | *intptr = value; | |
443 | break; | |
444 | ||
5260325f | 445 | case sLoginGraceTime: |
446 | intptr = &options->login_grace_time; | |
e2b1fb42 | 447 | parse_time: |
448 | arg = strdelim(&cp); | |
449 | if (!arg || *arg == '\0') | |
450 | fatal("%s line %d: missing time value.", | |
451 | filename, linenum); | |
452 | if ((value = convtime(arg)) == -1) | |
453 | fatal("%s line %d: invalid time value.", | |
454 | filename, linenum); | |
455 | if (*intptr == -1) | |
456 | *intptr = value; | |
457 | break; | |
5260325f | 458 | |
459 | case sKeyRegenerationTime: | |
460 | intptr = &options->key_regeneration_time; | |
e2b1fb42 | 461 | goto parse_time; |
5260325f | 462 | |
463 | case sListenAddress: | |
704b1659 | 464 | arg = strdelim(&cp); |
d11c1288 | 465 | if (!arg || *arg == '\0' || strncmp(arg, "[]", 2) == 0) |
54b974dc | 466 | fatal("%s line %d: missing inet addr.", |
48e671d5 | 467 | filename, linenum); |
d11c1288 | 468 | if (*arg == '[') { |
469 | if ((p = strchr(arg, ']')) == NULL) | |
470 | fatal("%s line %d: bad ipv6 inet addr usage.", | |
471 | filename, linenum); | |
472 | arg++; | |
473 | memmove(p, p+1, strlen(p+1)+1); | |
474 | } else if (((p = strchr(arg, ':')) == NULL) || | |
475 | (strchr(p+1, ':') != NULL)) { | |
2d2a2c65 | 476 | add_listen_addr(options, arg, 0); |
d11c1288 | 477 | break; |
478 | } | |
479 | if (*p == ':') { | |
2d2a2c65 | 480 | u_short port; |
481 | ||
d11c1288 | 482 | p++; |
483 | if (*p == '\0') | |
484 | fatal("%s line %d: bad inet addr:port usage.", | |
485 | filename, linenum); | |
486 | else { | |
487 | *(p-1) = '\0'; | |
2d2a2c65 | 488 | if ((port = a2port(p)) == 0) |
489 | fatal("%s line %d: bad port number.", | |
490 | filename, linenum); | |
491 | add_listen_addr(options, arg, port); | |
d11c1288 | 492 | } |
493 | } else if (*p == '\0') | |
2d2a2c65 | 494 | add_listen_addr(options, arg, 0); |
d11c1288 | 495 | else |
496 | fatal("%s line %d: bad inet addr usage.", | |
497 | filename, linenum); | |
5260325f | 498 | break; |
499 | ||
500 | case sHostKeyFile: | |
fa08c86b | 501 | intptr = &options->num_host_key_files; |
b7c70970 | 502 | if (*intptr >= MAX_HOSTKEYS) |
503 | fatal("%s line %d: too many host keys specified (max %d).", | |
fa08c86b | 504 | filename, linenum, MAX_HOSTKEYS); |
fa08c86b | 505 | charptr = &options->host_key_files[*intptr]; |
fa649821 | 506 | parse_filename: |
704b1659 | 507 | arg = strdelim(&cp); |
b7c70970 | 508 | if (!arg || *arg == '\0') |
509 | fatal("%s line %d: missing file name.", | |
0fbe8c74 | 510 | filename, linenum); |
fa08c86b | 511 | if (*charptr == NULL) { |
089fbbd2 | 512 | *charptr = tilde_expand_filename(arg, getuid()); |
fa08c86b | 513 | /* increase optional counter */ |
514 | if (intptr != NULL) | |
515 | *intptr = *intptr + 1; | |
516 | } | |
0fbe8c74 | 517 | break; |
518 | ||
519 | case sPidFile: | |
520 | charptr = &options->pid_file; | |
fa649821 | 521 | goto parse_filename; |
5260325f | 522 | |
5260325f | 523 | case sPermitRootLogin: |
524 | intptr = &options->permit_root_login; | |
704b1659 | 525 | arg = strdelim(&cp); |
b7c70970 | 526 | if (!arg || *arg == '\0') |
527 | fatal("%s line %d: missing yes/" | |
7c8f2a26 | 528 | "without-password/forced-commands-only/no " |
b7c70970 | 529 | "argument.", filename, linenum); |
530 | value = 0; /* silence compiler */ | |
089fbbd2 | 531 | if (strcmp(arg, "without-password") == 0) |
15853e93 | 532 | value = PERMIT_NO_PASSWD; |
533 | else if (strcmp(arg, "forced-commands-only") == 0) | |
534 | value = PERMIT_FORCED_ONLY; | |
089fbbd2 | 535 | else if (strcmp(arg, "yes") == 0) |
15853e93 | 536 | value = PERMIT_YES; |
089fbbd2 | 537 | else if (strcmp(arg, "no") == 0) |
15853e93 | 538 | value = PERMIT_NO; |
b7c70970 | 539 | else |
540 | fatal("%s line %d: Bad yes/" | |
15853e93 | 541 | "without-password/forced-commands-only/no " |
b7c70970 | 542 | "argument: %s", filename, linenum, arg); |
5260325f | 543 | if (*intptr == -1) |
544 | *intptr = value; | |
545 | break; | |
546 | ||
547 | case sIgnoreRhosts: | |
548 | intptr = &options->ignore_rhosts; | |
549 | parse_flag: | |
704b1659 | 550 | arg = strdelim(&cp); |
b7c70970 | 551 | if (!arg || *arg == '\0') |
552 | fatal("%s line %d: missing yes/no argument.", | |
553 | filename, linenum); | |
554 | value = 0; /* silence compiler */ | |
089fbbd2 | 555 | if (strcmp(arg, "yes") == 0) |
5260325f | 556 | value = 1; |
089fbbd2 | 557 | else if (strcmp(arg, "no") == 0) |
5260325f | 558 | value = 0; |
b7c70970 | 559 | else |
560 | fatal("%s line %d: Bad yes/no argument: %s", | |
089fbbd2 | 561 | filename, linenum, arg); |
5260325f | 562 | if (*intptr == -1) |
563 | *intptr = value; | |
564 | break; | |
565 | ||
566 | case sIgnoreUserKnownHosts: | |
567 | intptr = &options->ignore_user_known_hosts; | |
c8d54615 | 568 | goto parse_flag; |
5260325f | 569 | |
570 | case sRhostsAuthentication: | |
571 | intptr = &options->rhosts_authentication; | |
572 | goto parse_flag; | |
573 | ||
574 | case sRhostsRSAAuthentication: | |
575 | intptr = &options->rhosts_rsa_authentication; | |
576 | goto parse_flag; | |
577 | ||
8002af61 | 578 | case sHostbasedAuthentication: |
579 | intptr = &options->hostbased_authentication; | |
580 | goto parse_flag; | |
581 | ||
582 | case sHostbasedUsesNameFromPacketOnly: | |
583 | intptr = &options->hostbased_uses_name_from_packet_only; | |
584 | goto parse_flag; | |
585 | ||
5260325f | 586 | case sRSAAuthentication: |
587 | intptr = &options->rsa_authentication; | |
588 | goto parse_flag; | |
589 | ||
fa08c86b | 590 | case sPubkeyAuthentication: |
591 | intptr = &options->pubkey_authentication; | |
1d1ffb87 | 592 | goto parse_flag; |
ced49be2 | 593 | #if defined(KRB4) || defined(KRB5) |
5260325f | 594 | case sKerberosAuthentication: |
595 | intptr = &options->kerberos_authentication; | |
596 | goto parse_flag; | |
597 | ||
598 | case sKerberosOrLocalPasswd: | |
599 | intptr = &options->kerberos_or_local_passwd; | |
600 | goto parse_flag; | |
601 | ||
602 | case sKerberosTicketCleanup: | |
603 | intptr = &options->kerberos_ticket_cleanup; | |
604 | goto parse_flag; | |
8efc0c15 | 605 | #endif |
ced49be2 | 606 | #if defined(AFS) || defined(KRB5) |
5260325f | 607 | case sKerberosTgtPassing: |
608 | intptr = &options->kerberos_tgt_passing; | |
609 | goto parse_flag; | |
ced49be2 | 610 | #endif |
611 | #ifdef AFS | |
5260325f | 612 | case sAFSTokenPassing: |
613 | intptr = &options->afs_token_passing; | |
614 | goto parse_flag; | |
8efc0c15 | 615 | #endif |
616 | ||
5260325f | 617 | case sPasswordAuthentication: |
618 | intptr = &options->password_authentication; | |
619 | goto parse_flag; | |
8efc0c15 | 620 | |
94ec8c6b | 621 | case sKbdInteractiveAuthentication: |
622 | intptr = &options->kbd_interactive_authentication; | |
623 | goto parse_flag; | |
624 | ||
d464095c | 625 | case sChallengeResponseAuthentication: |
5ba55ada | 626 | intptr = &options->challenge_response_authentication; |
5260325f | 627 | goto parse_flag; |
8efc0c15 | 628 | |
5260325f | 629 | case sPrintMotd: |
630 | intptr = &options->print_motd; | |
631 | goto parse_flag; | |
632 | ||
4f4648f9 | 633 | case sPrintLastLog: |
634 | intptr = &options->print_lastlog; | |
635 | goto parse_flag; | |
636 | ||
5260325f | 637 | case sX11Forwarding: |
638 | intptr = &options->x11_forwarding; | |
639 | goto parse_flag; | |
640 | ||
641 | case sX11DisplayOffset: | |
642 | intptr = &options->x11_display_offset; | |
643 | goto parse_int; | |
644 | ||
fa649821 | 645 | case sXAuthLocation: |
646 | charptr = &options->xauth_location; | |
647 | goto parse_filename; | |
2b87da3b | 648 | |
5260325f | 649 | case sStrictModes: |
650 | intptr = &options->strict_modes; | |
651 | goto parse_flag; | |
652 | ||
653 | case sKeepAlives: | |
654 | intptr = &options->keepalives; | |
655 | goto parse_flag; | |
656 | ||
657 | case sEmptyPasswd: | |
658 | intptr = &options->permit_empty_passwd; | |
659 | goto parse_flag; | |
660 | ||
661 | case sUseLogin: | |
662 | intptr = &options->use_login; | |
663 | goto parse_flag; | |
664 | ||
1d1ffb87 | 665 | case sGatewayPorts: |
666 | intptr = &options->gateway_ports; | |
667 | goto parse_flag; | |
668 | ||
61e96248 | 669 | case sReverseMappingCheck: |
670 | intptr = &options->reverse_mapping_check; | |
671 | goto parse_flag; | |
672 | ||
5260325f | 673 | case sLogFacility: |
674 | intptr = (int *) &options->log_facility; | |
704b1659 | 675 | arg = strdelim(&cp); |
089fbbd2 | 676 | value = log_facility_number(arg); |
5260325f | 677 | if (value == (SyslogFacility) - 1) |
54b974dc | 678 | fatal("%.200s line %d: unsupported log facility '%s'", |
089fbbd2 | 679 | filename, linenum, arg ? arg : "<NONE>"); |
5260325f | 680 | if (*intptr == -1) |
681 | *intptr = (SyslogFacility) value; | |
682 | break; | |
683 | ||
684 | case sLogLevel: | |
685 | intptr = (int *) &options->log_level; | |
704b1659 | 686 | arg = strdelim(&cp); |
089fbbd2 | 687 | value = log_level_number(arg); |
5260325f | 688 | if (value == (LogLevel) - 1) |
54b974dc | 689 | fatal("%.200s line %d: unsupported log level '%s'", |
089fbbd2 | 690 | filename, linenum, arg ? arg : "<NONE>"); |
5260325f | 691 | if (*intptr == -1) |
692 | *intptr = (LogLevel) value; | |
693 | break; | |
694 | ||
33de75a3 | 695 | case sAllowTcpForwarding: |
696 | intptr = &options->allow_tcp_forwarding; | |
697 | goto parse_flag; | |
698 | ||
5260325f | 699 | case sAllowUsers: |
704b1659 | 700 | while ((arg = strdelim(&cp)) && *arg != '\0') { |
a8be9f80 | 701 | if (options->num_allow_users >= MAX_ALLOW_USERS) |
54b974dc | 702 | fatal("%s line %d: too many allow users.", |
a8be9f80 | 703 | filename, linenum); |
089fbbd2 | 704 | options->allow_users[options->num_allow_users++] = xstrdup(arg); |
5260325f | 705 | } |
706 | break; | |
707 | ||
708 | case sDenyUsers: | |
704b1659 | 709 | while ((arg = strdelim(&cp)) && *arg != '\0') { |
a8be9f80 | 710 | if (options->num_deny_users >= MAX_DENY_USERS) |
54b974dc | 711 | fatal( "%s line %d: too many deny users.", |
a8be9f80 | 712 | filename, linenum); |
089fbbd2 | 713 | options->deny_users[options->num_deny_users++] = xstrdup(arg); |
5260325f | 714 | } |
715 | break; | |
716 | ||
717 | case sAllowGroups: | |
704b1659 | 718 | while ((arg = strdelim(&cp)) && *arg != '\0') { |
a8be9f80 | 719 | if (options->num_allow_groups >= MAX_ALLOW_GROUPS) |
54b974dc | 720 | fatal("%s line %d: too many allow groups.", |
a8be9f80 | 721 | filename, linenum); |
089fbbd2 | 722 | options->allow_groups[options->num_allow_groups++] = xstrdup(arg); |
5260325f | 723 | } |
724 | break; | |
725 | ||
726 | case sDenyGroups: | |
704b1659 | 727 | while ((arg = strdelim(&cp)) && *arg != '\0') { |
a8be9f80 | 728 | if (options->num_deny_groups >= MAX_DENY_GROUPS) |
54b974dc | 729 | fatal("%s line %d: too many deny groups.", |
a8be9f80 | 730 | filename, linenum); |
089fbbd2 | 731 | options->deny_groups[options->num_deny_groups++] = xstrdup(arg); |
5260325f | 732 | } |
733 | break; | |
734 | ||
a8be9f80 | 735 | case sCiphers: |
704b1659 | 736 | arg = strdelim(&cp); |
089fbbd2 | 737 | if (!arg || *arg == '\0') |
71276795 | 738 | fatal("%s line %d: Missing argument.", filename, linenum); |
089fbbd2 | 739 | if (!ciphers_valid(arg)) |
d0c832f3 | 740 | fatal("%s line %d: Bad SSH2 cipher spec '%s'.", |
089fbbd2 | 741 | filename, linenum, arg ? arg : "<NONE>"); |
a8be9f80 | 742 | if (options->ciphers == NULL) |
089fbbd2 | 743 | options->ciphers = xstrdup(arg); |
a8be9f80 | 744 | break; |
745 | ||
b2552997 | 746 | case sMacs: |
747 | arg = strdelim(&cp); | |
748 | if (!arg || *arg == '\0') | |
749 | fatal("%s line %d: Missing argument.", filename, linenum); | |
750 | if (!mac_valid(arg)) | |
751 | fatal("%s line %d: Bad SSH2 mac spec '%s'.", | |
752 | filename, linenum, arg ? arg : "<NONE>"); | |
753 | if (options->macs == NULL) | |
754 | options->macs = xstrdup(arg); | |
755 | break; | |
756 | ||
a8be9f80 | 757 | case sProtocol: |
758 | intptr = &options->protocol; | |
704b1659 | 759 | arg = strdelim(&cp); |
089fbbd2 | 760 | if (!arg || *arg == '\0') |
71276795 | 761 | fatal("%s line %d: Missing argument.", filename, linenum); |
089fbbd2 | 762 | value = proto_spec(arg); |
a8be9f80 | 763 | if (value == SSH_PROTO_UNKNOWN) |
764 | fatal("%s line %d: Bad protocol spec '%s'.", | |
089fbbd2 | 765 | filename, linenum, arg ? arg : "<NONE>"); |
a8be9f80 | 766 | if (*intptr == SSH_PROTO_UNKNOWN) |
767 | *intptr = value; | |
768 | break; | |
769 | ||
38c295d6 | 770 | case sSubsystem: |
771 | if(options->num_subsystems >= MAX_SUBSYSTEMS) { | |
772 | fatal("%s line %d: too many subsystems defined.", | |
773 | filename, linenum); | |
774 | } | |
704b1659 | 775 | arg = strdelim(&cp); |
089fbbd2 | 776 | if (!arg || *arg == '\0') |
38c295d6 | 777 | fatal("%s line %d: Missing subsystem name.", |
778 | filename, linenum); | |
779 | for (i = 0; i < options->num_subsystems; i++) | |
089fbbd2 | 780 | if(strcmp(arg, options->subsystem_name[i]) == 0) |
38c295d6 | 781 | fatal("%s line %d: Subsystem '%s' already defined.", |
089fbbd2 | 782 | filename, linenum, arg); |
783 | options->subsystem_name[options->num_subsystems] = xstrdup(arg); | |
704b1659 | 784 | arg = strdelim(&cp); |
089fbbd2 | 785 | if (!arg || *arg == '\0') |
38c295d6 | 786 | fatal("%s line %d: Missing subsystem command.", |
787 | filename, linenum); | |
089fbbd2 | 788 | options->subsystem_command[options->num_subsystems] = xstrdup(arg); |
38c295d6 | 789 | options->num_subsystems++; |
790 | break; | |
791 | ||
089fbbd2 | 792 | case sMaxStartups: |
c345cf9d | 793 | arg = strdelim(&cp); |
794 | if (!arg || *arg == '\0') | |
795 | fatal("%s line %d: Missing MaxStartups spec.", | |
796 | filename, linenum); | |
97de229c | 797 | if ((n = sscanf(arg, "%d:%d:%d", |
c345cf9d | 798 | &options->max_startups_begin, |
799 | &options->max_startups_rate, | |
97de229c | 800 | &options->max_startups)) == 3) { |
c345cf9d | 801 | if (options->max_startups_begin > |
802 | options->max_startups || | |
803 | options->max_startups_rate > 100 || | |
804 | options->max_startups_rate < 1) | |
97de229c | 805 | fatal("%s line %d: Illegal MaxStartups spec.", |
806 | filename, linenum); | |
807 | } else if (n != 1) | |
c345cf9d | 808 | fatal("%s line %d: Illegal MaxStartups spec.", |
97de229c | 809 | filename, linenum); |
810 | else | |
811 | options->max_startups = options->max_startups_begin; | |
812 | break; | |
089fbbd2 | 813 | |
eea39c02 | 814 | case sBanner: |
815 | charptr = &options->banner; | |
816 | goto parse_filename; | |
c8445989 | 817 | /* |
818 | * These options can contain %X options expanded at | |
819 | * connect time, so that you can specify paths like: | |
820 | * | |
821 | * AuthorizedKeysFile /etc/ssh_keys/%u | |
822 | */ | |
823 | case sAuthorizedKeysFile: | |
824 | case sAuthorizedKeysFile2: | |
825 | charptr = (opcode == sAuthorizedKeysFile ) ? | |
826 | &options->authorized_keys_file : | |
827 | &options->authorized_keys_file2; | |
828 | goto parse_filename; | |
e2b1fb42 | 829 | |
3ffc6336 | 830 | case sClientAliveInterval: |
831 | intptr = &options->client_alive_interval; | |
e2b1fb42 | 832 | goto parse_time; |
833 | ||
3ffc6336 | 834 | case sClientAliveCountMax: |
835 | intptr = &options->client_alive_count_max; | |
836 | goto parse_int; | |
e2b1fb42 | 837 | |
5c53a31e | 838 | case sDeprecated: |
839 | log("%s line %d: Deprecated option %s", | |
840 | filename, linenum, arg); | |
841 | while(arg) | |
842 | arg = strdelim(&cp); | |
843 | break; | |
844 | ||
10f72868 | 845 | case sPAMAuthenticationViaKbdInt: |
846 | intptr = &options->pam_authentication_via_kbd_int; | |
847 | goto parse_flag; | |
848 | ||
5260325f | 849 | default: |
b7c70970 | 850 | fatal("%s line %d: Missing handler for opcode %s (%d)", |
851 | filename, linenum, arg, opcode); | |
8efc0c15 | 852 | } |
b7c70970 | 853 | if ((arg = strdelim(&cp)) != NULL && *arg != '\0') |
854 | fatal("%s line %d: garbage at end of line; \"%.200s\".", | |
855 | filename, linenum, arg); | |
8efc0c15 | 856 | } |
5260325f | 857 | fclose(f); |
b7c70970 | 858 | if (bad_options > 0) |
859 | fatal("%s: terminating, %d bad configuration options", | |
860 | filename, bad_options); | |
8efc0c15 | 861 | } |