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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" | |
97de229c | 13 | RCSID("$OpenBSD: servconf.c,v 1.87 2001/07/08 15:23:38 stevesk Exp $"); |
42f11eb2 | 14 | |
15 | #ifdef KRB4 | |
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->check_mail = -1; |
60 | options->x11_forwarding = -1; | |
61 | options->x11_display_offset = -1; | |
fa649821 | 62 | options->xauth_location = NULL; |
5260325f | 63 | options->strict_modes = -1; |
64 | options->keepalives = -1; | |
65 | options->log_facility = (SyslogFacility) - 1; | |
66 | options->log_level = (LogLevel) - 1; | |
67 | options->rhosts_authentication = -1; | |
68 | options->rhosts_rsa_authentication = -1; | |
8002af61 | 69 | options->hostbased_authentication = -1; |
70 | options->hostbased_uses_name_from_packet_only = -1; | |
5260325f | 71 | options->rsa_authentication = -1; |
fa08c86b | 72 | options->pubkey_authentication = -1; |
ced49be2 | 73 | #if defined(KRB4) || defined(KRB5) |
5260325f | 74 | options->kerberos_authentication = -1; |
75 | options->kerberos_or_local_passwd = -1; | |
76 | options->kerberos_ticket_cleanup = -1; | |
8efc0c15 | 77 | #endif |
ced49be2 | 78 | #if defined(AFS) || defined(KRB5) |
5260325f | 79 | options->kerberos_tgt_passing = -1; |
ced49be2 | 80 | #endif |
81 | #ifdef AFS | |
5260325f | 82 | options->afs_token_passing = -1; |
8efc0c15 | 83 | #endif |
5260325f | 84 | options->password_authentication = -1; |
94ec8c6b | 85 | options->kbd_interactive_authentication = -1; |
5ba55ada | 86 | options->challenge_response_authentication = -1; |
5260325f | 87 | options->permit_empty_passwd = -1; |
88 | options->use_login = -1; | |
33de75a3 | 89 | options->allow_tcp_forwarding = -1; |
5260325f | 90 | options->num_allow_users = 0; |
91 | options->num_deny_users = 0; | |
92 | options->num_allow_groups = 0; | |
93 | options->num_deny_groups = 0; | |
a8be9f80 | 94 | options->ciphers = NULL; |
b2552997 | 95 | options->macs = NULL; |
a8be9f80 | 96 | options->protocol = SSH_PROTO_UNKNOWN; |
1d1ffb87 | 97 | options->gateway_ports = -1; |
38c295d6 | 98 | options->num_subsystems = 0; |
c345cf9d | 99 | options->max_startups_begin = -1; |
100 | options->max_startups_rate = -1; | |
089fbbd2 | 101 | options->max_startups = -1; |
eea39c02 | 102 | options->banner = NULL; |
61e96248 | 103 | options->reverse_mapping_check = -1; |
3ffc6336 | 104 | options->client_alive_interval = -1; |
105 | options->client_alive_count_max = -1; | |
c8445989 | 106 | options->authorized_keys_file = NULL; |
107 | options->authorized_keys_file2 = NULL; | |
10f72868 | 108 | options->pam_authentication_via_kbd_int = -1; |
8efc0c15 | 109 | } |
110 | ||
6ae2364d | 111 | void |
5260325f | 112 | fill_default_server_options(ServerOptions *options) |
8efc0c15 | 113 | { |
fa08c86b | 114 | if (options->protocol == SSH_PROTO_UNKNOWN) |
115 | options->protocol = SSH_PROTO_1|SSH_PROTO_2; | |
116 | if (options->num_host_key_files == 0) { | |
117 | /* fill default hostkeys for protocols */ | |
118 | if (options->protocol & SSH_PROTO_1) | |
42f11eb2 | 119 | options->host_key_files[options->num_host_key_files++] = _PATH_HOST_KEY_FILE; |
fa08c86b | 120 | if (options->protocol & SSH_PROTO_2) |
42f11eb2 | 121 | options->host_key_files[options->num_host_key_files++] = _PATH_HOST_DSA_KEY_FILE; |
fa08c86b | 122 | } |
48e671d5 | 123 | if (options->num_ports == 0) |
124 | options->ports[options->num_ports++] = SSH_DEFAULT_PORT; | |
125 | if (options->listen_addrs == NULL) | |
2d2a2c65 | 126 | add_listen_addr(options, NULL, 0); |
0fbe8c74 | 127 | if (options->pid_file == NULL) |
42f11eb2 | 128 | options->pid_file = _PATH_SSH_DAEMON_PID_FILE; |
5260325f | 129 | if (options->server_key_bits == -1) |
130 | options->server_key_bits = 768; | |
131 | if (options->login_grace_time == -1) | |
132 | options->login_grace_time = 600; | |
133 | if (options->key_regeneration_time == -1) | |
134 | options->key_regeneration_time = 3600; | |
15853e93 | 135 | if (options->permit_root_login == PERMIT_NOT_SET) |
136 | options->permit_root_login = PERMIT_YES; | |
5260325f | 137 | if (options->ignore_rhosts == -1) |
c8d54615 | 138 | options->ignore_rhosts = 1; |
5260325f | 139 | if (options->ignore_user_known_hosts == -1) |
140 | options->ignore_user_known_hosts = 0; | |
141 | if (options->check_mail == -1) | |
142 | options->check_mail = 0; | |
143 | if (options->print_motd == -1) | |
144 | options->print_motd = 1; | |
4f4648f9 | 145 | if (options->print_lastlog == -1) |
146 | options->print_lastlog = 1; | |
5260325f | 147 | if (options->x11_forwarding == -1) |
c8d54615 | 148 | options->x11_forwarding = 0; |
5260325f | 149 | if (options->x11_display_offset == -1) |
c8d54615 | 150 | options->x11_display_offset = 10; |
fd9ede94 | 151 | #ifdef _PATH_XAUTH |
fa649821 | 152 | if (options->xauth_location == NULL) |
fd9ede94 | 153 | options->xauth_location = _PATH_XAUTH; |
154 | #endif | |
5260325f | 155 | if (options->strict_modes == -1) |
156 | options->strict_modes = 1; | |
157 | if (options->keepalives == -1) | |
158 | options->keepalives = 1; | |
159 | if (options->log_facility == (SyslogFacility) (-1)) | |
160 | options->log_facility = SYSLOG_FACILITY_AUTH; | |
161 | if (options->log_level == (LogLevel) (-1)) | |
59c97189 | 162 | options->log_level = SYSLOG_LEVEL_INFO; |
5260325f | 163 | if (options->rhosts_authentication == -1) |
164 | options->rhosts_authentication = 0; | |
165 | if (options->rhosts_rsa_authentication == -1) | |
c8d54615 | 166 | options->rhosts_rsa_authentication = 0; |
8002af61 | 167 | if (options->hostbased_authentication == -1) |
168 | options->hostbased_authentication = 0; | |
169 | if (options->hostbased_uses_name_from_packet_only == -1) | |
170 | options->hostbased_uses_name_from_packet_only = 0; | |
5260325f | 171 | if (options->rsa_authentication == -1) |
172 | options->rsa_authentication = 1; | |
fa08c86b | 173 | if (options->pubkey_authentication == -1) |
174 | options->pubkey_authentication = 1; | |
ced49be2 | 175 | #if defined(KRB4) || defined(KRB5) |
5260325f | 176 | if (options->kerberos_authentication == -1) |
177 | options->kerberos_authentication = (access(KEYFILE, R_OK) == 0); | |
178 | if (options->kerberos_or_local_passwd == -1) | |
179 | options->kerberos_or_local_passwd = 1; | |
180 | if (options->kerberos_ticket_cleanup == -1) | |
181 | options->kerberos_ticket_cleanup = 1; | |
ced49be2 | 182 | #endif |
183 | #if defined(AFS) || defined(KRB5) | |
5260325f | 184 | if (options->kerberos_tgt_passing == -1) |
185 | options->kerberos_tgt_passing = 0; | |
ced49be2 | 186 | #endif |
187 | #ifdef AFS | |
5260325f | 188 | if (options->afs_token_passing == -1) |
189 | options->afs_token_passing = k_hasafs(); | |
ced49be2 | 190 | #endif |
5260325f | 191 | if (options->password_authentication == -1) |
192 | options->password_authentication = 1; | |
94ec8c6b | 193 | if (options->kbd_interactive_authentication == -1) |
194 | options->kbd_interactive_authentication = 0; | |
5ba55ada | 195 | if (options->challenge_response_authentication == -1) |
196 | options->challenge_response_authentication = 1; | |
5260325f | 197 | if (options->permit_empty_passwd == -1) |
c8d54615 | 198 | options->permit_empty_passwd = 0; |
5260325f | 199 | if (options->use_login == -1) |
200 | options->use_login = 0; | |
33de75a3 | 201 | if (options->allow_tcp_forwarding == -1) |
202 | options->allow_tcp_forwarding = 1; | |
1d1ffb87 | 203 | if (options->gateway_ports == -1) |
204 | options->gateway_ports = 0; | |
089fbbd2 | 205 | if (options->max_startups == -1) |
206 | options->max_startups = 10; | |
c345cf9d | 207 | if (options->max_startups_rate == -1) |
208 | options->max_startups_rate = 100; /* 100% */ | |
209 | if (options->max_startups_begin == -1) | |
210 | options->max_startups_begin = options->max_startups; | |
61e96248 | 211 | if (options->reverse_mapping_check == -1) |
212 | options->reverse_mapping_check = 0; | |
3ffc6336 | 213 | if (options->client_alive_interval == -1) |
214 | options->client_alive_interval = 0; | |
215 | if (options->client_alive_count_max == -1) | |
216 | options->client_alive_count_max = 3; | |
c8445989 | 217 | if (options->authorized_keys_file == NULL) |
70cd360d | 218 | options->authorized_keys_file = _PATH_SSH_USER_PERMITTED_KEYS; |
c8445989 | 219 | if (options->authorized_keys_file2 == NULL) |
70cd360d | 220 | options->authorized_keys_file2 = _PATH_SSH_USER_PERMITTED_KEYS2; |
10f72868 | 221 | if (options->pam_authentication_via_kbd_int == -1) |
222 | options->pam_authentication_via_kbd_int = 0; | |
8efc0c15 | 223 | } |
224 | ||
8efc0c15 | 225 | /* Keyword tokens. */ |
5260325f | 226 | typedef enum { |
227 | sBadOption, /* == unknown option */ | |
228 | sPort, sHostKeyFile, sServerKeyBits, sLoginGraceTime, sKeyRegenerationTime, | |
229 | sPermitRootLogin, sLogFacility, sLogLevel, | |
230 | sRhostsAuthentication, sRhostsRSAAuthentication, sRSAAuthentication, | |
ced49be2 | 231 | #if defined(KRB4) || defined(KRB5) |
5260325f | 232 | sKerberosAuthentication, sKerberosOrLocalPasswd, sKerberosTicketCleanup, |
8efc0c15 | 233 | #endif |
ced49be2 | 234 | #if defined(AFS) || defined(KRB5) |
235 | sKerberosTgtPassing, | |
236 | #endif | |
8efc0c15 | 237 | #ifdef AFS |
ced49be2 | 238 | sAFSTokenPassing, |
8efc0c15 | 239 | #endif |
d464095c | 240 | sChallengeResponseAuthentication, |
94ec8c6b | 241 | sPasswordAuthentication, sKbdInteractiveAuthentication, sListenAddress, |
4f4648f9 | 242 | sPrintMotd, sPrintLastLog, sIgnoreRhosts, |
243 | sX11Forwarding, sX11DisplayOffset, | |
9c81df4c | 244 | sStrictModes, sEmptyPasswd, sKeepAlives, sCheckMail, |
33de75a3 | 245 | sUseLogin, sAllowTcpForwarding, |
246 | sAllowUsers, sDenyUsers, sAllowGroups, sDenyGroups, | |
b2552997 | 247 | sIgnoreUserKnownHosts, sCiphers, sMacs, sProtocol, sPidFile, |
fa08c86b | 248 | sGatewayPorts, sPubkeyAuthentication, sXAuthLocation, sSubsystem, sMaxStartups, |
8002af61 | 249 | sBanner, sReverseMappingCheck, sHostbasedAuthentication, |
3ffc6336 | 250 | sHostbasedUsesNameFromPacketOnly, sClientAliveInterval, |
c8445989 | 251 | sClientAliveCountMax, sAuthorizedKeysFile, sAuthorizedKeysFile2, |
252 | sPAMAuthenticationViaKbdInt | |
8efc0c15 | 253 | } ServerOpCodes; |
254 | ||
255 | /* Textual representation of the tokens. */ | |
5260325f | 256 | static struct { |
257 | const char *name; | |
258 | ServerOpCodes opcode; | |
259 | } keywords[] = { | |
260 | { "port", sPort }, | |
261 | { "hostkey", sHostKeyFile }, | |
fa08c86b | 262 | { "hostdsakey", sHostKeyFile }, /* alias */ |
2b87da3b | 263 | { "pidfile", sPidFile }, |
5260325f | 264 | { "serverkeybits", sServerKeyBits }, |
265 | { "logingracetime", sLoginGraceTime }, | |
266 | { "keyregenerationinterval", sKeyRegenerationTime }, | |
267 | { "permitrootlogin", sPermitRootLogin }, | |
268 | { "syslogfacility", sLogFacility }, | |
269 | { "loglevel", sLogLevel }, | |
270 | { "rhostsauthentication", sRhostsAuthentication }, | |
271 | { "rhostsrsaauthentication", sRhostsRSAAuthentication }, | |
8002af61 | 272 | { "hostbasedauthentication", sHostbasedAuthentication }, |
273 | { "hostbasedusesnamefrompacketonly", sHostbasedUsesNameFromPacketOnly }, | |
5260325f | 274 | { "rsaauthentication", sRSAAuthentication }, |
fa08c86b | 275 | { "pubkeyauthentication", sPubkeyAuthentication }, |
276 | { "dsaauthentication", sPubkeyAuthentication }, /* alias */ | |
ced49be2 | 277 | #if defined(KRB4) || defined(KRB5) |
5260325f | 278 | { "kerberosauthentication", sKerberosAuthentication }, |
279 | { "kerberosorlocalpasswd", sKerberosOrLocalPasswd }, | |
280 | { "kerberosticketcleanup", sKerberosTicketCleanup }, | |
8efc0c15 | 281 | #endif |
ced49be2 | 282 | #if defined(AFS) || defined(KRB5) |
5260325f | 283 | { "kerberostgtpassing", sKerberosTgtPassing }, |
ced49be2 | 284 | #endif |
285 | #ifdef AFS | |
5260325f | 286 | { "afstokenpassing", sAFSTokenPassing }, |
8efc0c15 | 287 | #endif |
5260325f | 288 | { "passwordauthentication", sPasswordAuthentication }, |
94ec8c6b | 289 | { "kbdinteractiveauthentication", sKbdInteractiveAuthentication }, |
d464095c | 290 | { "challengeresponseauthentication", sChallengeResponseAuthentication }, |
291 | { "skeyauthentication", sChallengeResponseAuthentication }, /* alias */ | |
5260325f | 292 | { "checkmail", sCheckMail }, |
293 | { "listenaddress", sListenAddress }, | |
294 | { "printmotd", sPrintMotd }, | |
4f4648f9 | 295 | { "printlastlog", sPrintLastLog }, |
5260325f | 296 | { "ignorerhosts", sIgnoreRhosts }, |
297 | { "ignoreuserknownhosts", sIgnoreUserKnownHosts }, | |
298 | { "x11forwarding", sX11Forwarding }, | |
299 | { "x11displayoffset", sX11DisplayOffset }, | |
fa649821 | 300 | { "xauthlocation", sXAuthLocation }, |
5260325f | 301 | { "strictmodes", sStrictModes }, |
302 | { "permitemptypasswords", sEmptyPasswd }, | |
303 | { "uselogin", sUseLogin }, | |
5260325f | 304 | { "keepalive", sKeepAlives }, |
33de75a3 | 305 | { "allowtcpforwarding", sAllowTcpForwarding }, |
5260325f | 306 | { "allowusers", sAllowUsers }, |
307 | { "denyusers", sDenyUsers }, | |
308 | { "allowgroups", sAllowGroups }, | |
309 | { "denygroups", sDenyGroups }, | |
a8be9f80 | 310 | { "ciphers", sCiphers }, |
b2552997 | 311 | { "macs", sMacs }, |
a8be9f80 | 312 | { "protocol", sProtocol }, |
1d1ffb87 | 313 | { "gatewayports", sGatewayPorts }, |
38c295d6 | 314 | { "subsystem", sSubsystem }, |
089fbbd2 | 315 | { "maxstartups", sMaxStartups }, |
eea39c02 | 316 | { "banner", sBanner }, |
61e96248 | 317 | { "reversemappingcheck", sReverseMappingCheck }, |
3ffc6336 | 318 | { "clientaliveinterval", sClientAliveInterval }, |
319 | { "clientalivecountmax", sClientAliveCountMax }, | |
c8445989 | 320 | { "authorizedkeysfile", sAuthorizedKeysFile }, |
321 | { "authorizedkeysfile2", sAuthorizedKeysFile2 }, | |
10f72868 | 322 | { "PAMAuthenticationViaKbdInt", sPAMAuthenticationViaKbdInt }, |
5260325f | 323 | { NULL, 0 } |
8efc0c15 | 324 | }; |
325 | ||
aa3378df | 326 | /* |
6be9a5e8 | 327 | * Returns the number of the token pointed to by cp or sBadOption. |
aa3378df | 328 | */ |
8efc0c15 | 329 | |
6ae2364d | 330 | static ServerOpCodes |
5260325f | 331 | parse_token(const char *cp, const char *filename, |
332 | int linenum) | |
8efc0c15 | 333 | { |
1e3b8b07 | 334 | u_int i; |
8efc0c15 | 335 | |
5260325f | 336 | for (i = 0; keywords[i].name; i++) |
aa3378df | 337 | if (strcasecmp(cp, keywords[i].name) == 0) |
5260325f | 338 | return keywords[i].opcode; |
8efc0c15 | 339 | |
b7c70970 | 340 | error("%s: line %d: Bad configuration option: %s", |
341 | filename, linenum, cp); | |
5260325f | 342 | return sBadOption; |
8efc0c15 | 343 | } |
344 | ||
396c147e | 345 | static void |
2d2a2c65 | 346 | add_listen_addr(ServerOptions *options, char *addr, u_short port) |
48e671d5 | 347 | { |
48e671d5 | 348 | int i; |
349 | ||
350 | if (options->num_ports == 0) | |
351 | options->ports[options->num_ports++] = SSH_DEFAULT_PORT; | |
2d2a2c65 | 352 | if (port == 0) |
d11c1288 | 353 | for (i = 0; i < options->num_ports; i++) |
354 | add_one_listen_addr(options, addr, options->ports[i]); | |
355 | else | |
2d2a2c65 | 356 | add_one_listen_addr(options, addr, port); |
d11c1288 | 357 | } |
358 | ||
396c147e | 359 | static void |
d11c1288 | 360 | add_one_listen_addr(ServerOptions *options, char *addr, u_short port) |
361 | { | |
362 | struct addrinfo hints, *ai, *aitop; | |
363 | char strport[NI_MAXSERV]; | |
364 | int gaierr; | |
365 | ||
366 | memset(&hints, 0, sizeof(hints)); | |
367 | hints.ai_family = IPv4or6; | |
368 | hints.ai_socktype = SOCK_STREAM; | |
369 | hints.ai_flags = (addr == NULL) ? AI_PASSIVE : 0; | |
370 | snprintf(strport, sizeof strport, "%d", port); | |
371 | if ((gaierr = getaddrinfo(addr, strport, &hints, &aitop)) != 0) | |
372 | fatal("bad addr or host: %s (%s)", | |
373 | addr ? addr : "<NULL>", | |
374 | gai_strerror(gaierr)); | |
375 | for (ai = aitop; ai->ai_next; ai = ai->ai_next) | |
376 | ; | |
377 | ai->ai_next = options->listen_addrs; | |
378 | options->listen_addrs = aitop; | |
48e671d5 | 379 | } |
380 | ||
8efc0c15 | 381 | /* Reads the server configuration file. */ |
382 | ||
6ae2364d | 383 | void |
5260325f | 384 | read_server_config(ServerOptions *options, const char *filename) |
8efc0c15 | 385 | { |
5260325f | 386 | FILE *f; |
387 | char line[1024]; | |
d11c1288 | 388 | char *cp, **charptr, *arg, *p; |
5260325f | 389 | int linenum, *intptr, value; |
390 | int bad_options = 0; | |
391 | ServerOpCodes opcode; | |
97de229c | 392 | int i, n; |
5260325f | 393 | |
394 | f = fopen(filename, "r"); | |
395 | if (!f) { | |
396 | perror(filename); | |
8efc0c15 | 397 | exit(1); |
5260325f | 398 | } |
399 | linenum = 0; | |
400 | while (fgets(line, sizeof(line), f)) { | |
401 | linenum++; | |
704b1659 | 402 | cp = line; |
403 | arg = strdelim(&cp); | |
404 | /* Ignore leading whitespace */ | |
405 | if (*arg == '\0') | |
406 | arg = strdelim(&cp); | |
42f11eb2 | 407 | if (!arg || !*arg || *arg == '#') |
5260325f | 408 | continue; |
fa08c86b | 409 | intptr = NULL; |
410 | charptr = NULL; | |
089fbbd2 | 411 | opcode = parse_token(arg, filename, linenum); |
5260325f | 412 | switch (opcode) { |
413 | case sBadOption: | |
414 | bad_options++; | |
415 | continue; | |
416 | case sPort: | |
48e671d5 | 417 | /* ignore ports from configfile if cmdline specifies ports */ |
418 | if (options->ports_from_cmdline) | |
419 | continue; | |
420 | if (options->listen_addrs != NULL) | |
421 | fatal("%s line %d: ports must be specified before " | |
c98cab9b | 422 | "ListenAdress.", filename, linenum); |
48e671d5 | 423 | if (options->num_ports >= MAX_PORTS) |
54b974dc | 424 | fatal("%s line %d: too many ports.", |
6ae2364d | 425 | filename, linenum); |
704b1659 | 426 | arg = strdelim(&cp); |
089fbbd2 | 427 | if (!arg || *arg == '\0') |
54b974dc | 428 | fatal("%s line %d: missing port number.", |
48e671d5 | 429 | filename, linenum); |
2d2a2c65 | 430 | options->ports[options->num_ports++] = a2port(arg); |
431 | if (options->ports[options->num_ports-1] == 0) | |
432 | fatal("%s line %d: Badly formatted port number.", | |
433 | filename, linenum); | |
48e671d5 | 434 | break; |
435 | ||
436 | case sServerKeyBits: | |
437 | intptr = &options->server_key_bits; | |
5260325f | 438 | parse_int: |
704b1659 | 439 | arg = strdelim(&cp); |
b7c70970 | 440 | if (!arg || *arg == '\0') |
441 | fatal("%s line %d: missing integer value.", | |
442 | filename, linenum); | |
089fbbd2 | 443 | value = atoi(arg); |
5260325f | 444 | if (*intptr == -1) |
445 | *intptr = value; | |
446 | break; | |
447 | ||
5260325f | 448 | case sLoginGraceTime: |
449 | intptr = &options->login_grace_time; | |
e2b1fb42 | 450 | parse_time: |
451 | arg = strdelim(&cp); | |
452 | if (!arg || *arg == '\0') | |
453 | fatal("%s line %d: missing time value.", | |
454 | filename, linenum); | |
455 | if ((value = convtime(arg)) == -1) | |
456 | fatal("%s line %d: invalid time value.", | |
457 | filename, linenum); | |
458 | if (*intptr == -1) | |
459 | *intptr = value; | |
460 | break; | |
5260325f | 461 | |
462 | case sKeyRegenerationTime: | |
463 | intptr = &options->key_regeneration_time; | |
e2b1fb42 | 464 | goto parse_time; |
5260325f | 465 | |
466 | case sListenAddress: | |
704b1659 | 467 | arg = strdelim(&cp); |
d11c1288 | 468 | if (!arg || *arg == '\0' || strncmp(arg, "[]", 2) == 0) |
54b974dc | 469 | fatal("%s line %d: missing inet addr.", |
48e671d5 | 470 | filename, linenum); |
d11c1288 | 471 | if (*arg == '[') { |
472 | if ((p = strchr(arg, ']')) == NULL) | |
473 | fatal("%s line %d: bad ipv6 inet addr usage.", | |
474 | filename, linenum); | |
475 | arg++; | |
476 | memmove(p, p+1, strlen(p+1)+1); | |
477 | } else if (((p = strchr(arg, ':')) == NULL) || | |
478 | (strchr(p+1, ':') != NULL)) { | |
2d2a2c65 | 479 | add_listen_addr(options, arg, 0); |
d11c1288 | 480 | break; |
481 | } | |
482 | if (*p == ':') { | |
2d2a2c65 | 483 | u_short port; |
484 | ||
d11c1288 | 485 | p++; |
486 | if (*p == '\0') | |
487 | fatal("%s line %d: bad inet addr:port usage.", | |
488 | filename, linenum); | |
489 | else { | |
490 | *(p-1) = '\0'; | |
2d2a2c65 | 491 | if ((port = a2port(p)) == 0) |
492 | fatal("%s line %d: bad port number.", | |
493 | filename, linenum); | |
494 | add_listen_addr(options, arg, port); | |
d11c1288 | 495 | } |
496 | } else if (*p == '\0') | |
2d2a2c65 | 497 | add_listen_addr(options, arg, 0); |
d11c1288 | 498 | else |
499 | fatal("%s line %d: bad inet addr usage.", | |
500 | filename, linenum); | |
5260325f | 501 | break; |
502 | ||
503 | case sHostKeyFile: | |
fa08c86b | 504 | intptr = &options->num_host_key_files; |
b7c70970 | 505 | if (*intptr >= MAX_HOSTKEYS) |
506 | fatal("%s line %d: too many host keys specified (max %d).", | |
fa08c86b | 507 | filename, linenum, MAX_HOSTKEYS); |
fa08c86b | 508 | charptr = &options->host_key_files[*intptr]; |
fa649821 | 509 | parse_filename: |
704b1659 | 510 | arg = strdelim(&cp); |
b7c70970 | 511 | if (!arg || *arg == '\0') |
512 | fatal("%s line %d: missing file name.", | |
0fbe8c74 | 513 | filename, linenum); |
fa08c86b | 514 | if (*charptr == NULL) { |
089fbbd2 | 515 | *charptr = tilde_expand_filename(arg, getuid()); |
fa08c86b | 516 | /* increase optional counter */ |
517 | if (intptr != NULL) | |
518 | *intptr = *intptr + 1; | |
519 | } | |
0fbe8c74 | 520 | break; |
521 | ||
522 | case sPidFile: | |
523 | charptr = &options->pid_file; | |
fa649821 | 524 | goto parse_filename; |
5260325f | 525 | |
5260325f | 526 | case sPermitRootLogin: |
527 | intptr = &options->permit_root_login; | |
704b1659 | 528 | arg = strdelim(&cp); |
b7c70970 | 529 | if (!arg || *arg == '\0') |
530 | fatal("%s line %d: missing yes/" | |
7c8f2a26 | 531 | "without-password/forced-commands-only/no " |
b7c70970 | 532 | "argument.", filename, linenum); |
533 | value = 0; /* silence compiler */ | |
089fbbd2 | 534 | if (strcmp(arg, "without-password") == 0) |
15853e93 | 535 | value = PERMIT_NO_PASSWD; |
536 | else if (strcmp(arg, "forced-commands-only") == 0) | |
537 | value = PERMIT_FORCED_ONLY; | |
089fbbd2 | 538 | else if (strcmp(arg, "yes") == 0) |
15853e93 | 539 | value = PERMIT_YES; |
089fbbd2 | 540 | else if (strcmp(arg, "no") == 0) |
15853e93 | 541 | value = PERMIT_NO; |
b7c70970 | 542 | else |
543 | fatal("%s line %d: Bad yes/" | |
15853e93 | 544 | "without-password/forced-commands-only/no " |
b7c70970 | 545 | "argument: %s", filename, linenum, arg); |
5260325f | 546 | if (*intptr == -1) |
547 | *intptr = value; | |
548 | break; | |
549 | ||
550 | case sIgnoreRhosts: | |
551 | intptr = &options->ignore_rhosts; | |
552 | parse_flag: | |
704b1659 | 553 | arg = strdelim(&cp); |
b7c70970 | 554 | if (!arg || *arg == '\0') |
555 | fatal("%s line %d: missing yes/no argument.", | |
556 | filename, linenum); | |
557 | value = 0; /* silence compiler */ | |
089fbbd2 | 558 | if (strcmp(arg, "yes") == 0) |
5260325f | 559 | value = 1; |
089fbbd2 | 560 | else if (strcmp(arg, "no") == 0) |
5260325f | 561 | value = 0; |
b7c70970 | 562 | else |
563 | fatal("%s line %d: Bad yes/no argument: %s", | |
089fbbd2 | 564 | filename, linenum, arg); |
5260325f | 565 | if (*intptr == -1) |
566 | *intptr = value; | |
567 | break; | |
568 | ||
569 | case sIgnoreUserKnownHosts: | |
570 | intptr = &options->ignore_user_known_hosts; | |
c8d54615 | 571 | goto parse_flag; |
5260325f | 572 | |
573 | case sRhostsAuthentication: | |
574 | intptr = &options->rhosts_authentication; | |
575 | goto parse_flag; | |
576 | ||
577 | case sRhostsRSAAuthentication: | |
578 | intptr = &options->rhosts_rsa_authentication; | |
579 | goto parse_flag; | |
580 | ||
8002af61 | 581 | case sHostbasedAuthentication: |
582 | intptr = &options->hostbased_authentication; | |
583 | goto parse_flag; | |
584 | ||
585 | case sHostbasedUsesNameFromPacketOnly: | |
586 | intptr = &options->hostbased_uses_name_from_packet_only; | |
587 | goto parse_flag; | |
588 | ||
5260325f | 589 | case sRSAAuthentication: |
590 | intptr = &options->rsa_authentication; | |
591 | goto parse_flag; | |
592 | ||
fa08c86b | 593 | case sPubkeyAuthentication: |
594 | intptr = &options->pubkey_authentication; | |
1d1ffb87 | 595 | goto parse_flag; |
ced49be2 | 596 | #if defined(KRB4) || defined(KRB5) |
5260325f | 597 | case sKerberosAuthentication: |
598 | intptr = &options->kerberos_authentication; | |
599 | goto parse_flag; | |
600 | ||
601 | case sKerberosOrLocalPasswd: | |
602 | intptr = &options->kerberos_or_local_passwd; | |
603 | goto parse_flag; | |
604 | ||
605 | case sKerberosTicketCleanup: | |
606 | intptr = &options->kerberos_ticket_cleanup; | |
607 | goto parse_flag; | |
8efc0c15 | 608 | #endif |
ced49be2 | 609 | #if defined(AFS) || defined(KRB5) |
5260325f | 610 | case sKerberosTgtPassing: |
611 | intptr = &options->kerberos_tgt_passing; | |
612 | goto parse_flag; | |
ced49be2 | 613 | #endif |
614 | #ifdef AFS | |
5260325f | 615 | case sAFSTokenPassing: |
616 | intptr = &options->afs_token_passing; | |
617 | goto parse_flag; | |
8efc0c15 | 618 | #endif |
619 | ||
5260325f | 620 | case sPasswordAuthentication: |
621 | intptr = &options->password_authentication; | |
622 | goto parse_flag; | |
8efc0c15 | 623 | |
94ec8c6b | 624 | case sKbdInteractiveAuthentication: |
625 | intptr = &options->kbd_interactive_authentication; | |
626 | goto parse_flag; | |
627 | ||
5260325f | 628 | case sCheckMail: |
629 | intptr = &options->check_mail; | |
630 | goto parse_flag; | |
8efc0c15 | 631 | |
d464095c | 632 | case sChallengeResponseAuthentication: |
5ba55ada | 633 | intptr = &options->challenge_response_authentication; |
5260325f | 634 | goto parse_flag; |
8efc0c15 | 635 | |
5260325f | 636 | case sPrintMotd: |
637 | intptr = &options->print_motd; | |
638 | goto parse_flag; | |
639 | ||
4f4648f9 | 640 | case sPrintLastLog: |
641 | intptr = &options->print_lastlog; | |
642 | goto parse_flag; | |
643 | ||
5260325f | 644 | case sX11Forwarding: |
645 | intptr = &options->x11_forwarding; | |
646 | goto parse_flag; | |
647 | ||
648 | case sX11DisplayOffset: | |
649 | intptr = &options->x11_display_offset; | |
650 | goto parse_int; | |
651 | ||
fa649821 | 652 | case sXAuthLocation: |
653 | charptr = &options->xauth_location; | |
654 | goto parse_filename; | |
2b87da3b | 655 | |
5260325f | 656 | case sStrictModes: |
657 | intptr = &options->strict_modes; | |
658 | goto parse_flag; | |
659 | ||
660 | case sKeepAlives: | |
661 | intptr = &options->keepalives; | |
662 | goto parse_flag; | |
663 | ||
664 | case sEmptyPasswd: | |
665 | intptr = &options->permit_empty_passwd; | |
666 | goto parse_flag; | |
667 | ||
668 | case sUseLogin: | |
669 | intptr = &options->use_login; | |
670 | goto parse_flag; | |
671 | ||
1d1ffb87 | 672 | case sGatewayPorts: |
673 | intptr = &options->gateway_ports; | |
674 | goto parse_flag; | |
675 | ||
61e96248 | 676 | case sReverseMappingCheck: |
677 | intptr = &options->reverse_mapping_check; | |
678 | goto parse_flag; | |
679 | ||
5260325f | 680 | case sLogFacility: |
681 | intptr = (int *) &options->log_facility; | |
704b1659 | 682 | arg = strdelim(&cp); |
089fbbd2 | 683 | value = log_facility_number(arg); |
5260325f | 684 | if (value == (SyslogFacility) - 1) |
54b974dc | 685 | fatal("%.200s line %d: unsupported log facility '%s'", |
089fbbd2 | 686 | filename, linenum, arg ? arg : "<NONE>"); |
5260325f | 687 | if (*intptr == -1) |
688 | *intptr = (SyslogFacility) value; | |
689 | break; | |
690 | ||
691 | case sLogLevel: | |
692 | intptr = (int *) &options->log_level; | |
704b1659 | 693 | arg = strdelim(&cp); |
089fbbd2 | 694 | value = log_level_number(arg); |
5260325f | 695 | if (value == (LogLevel) - 1) |
54b974dc | 696 | fatal("%.200s line %d: unsupported log level '%s'", |
089fbbd2 | 697 | filename, linenum, arg ? arg : "<NONE>"); |
5260325f | 698 | if (*intptr == -1) |
699 | *intptr = (LogLevel) value; | |
700 | break; | |
701 | ||
33de75a3 | 702 | case sAllowTcpForwarding: |
703 | intptr = &options->allow_tcp_forwarding; | |
704 | goto parse_flag; | |
705 | ||
5260325f | 706 | case sAllowUsers: |
704b1659 | 707 | while ((arg = strdelim(&cp)) && *arg != '\0') { |
a8be9f80 | 708 | if (options->num_allow_users >= MAX_ALLOW_USERS) |
54b974dc | 709 | fatal("%s line %d: too many allow users.", |
a8be9f80 | 710 | filename, linenum); |
089fbbd2 | 711 | options->allow_users[options->num_allow_users++] = xstrdup(arg); |
5260325f | 712 | } |
713 | break; | |
714 | ||
715 | case sDenyUsers: | |
704b1659 | 716 | while ((arg = strdelim(&cp)) && *arg != '\0') { |
a8be9f80 | 717 | if (options->num_deny_users >= MAX_DENY_USERS) |
54b974dc | 718 | fatal( "%s line %d: too many deny users.", |
a8be9f80 | 719 | filename, linenum); |
089fbbd2 | 720 | options->deny_users[options->num_deny_users++] = xstrdup(arg); |
5260325f | 721 | } |
722 | break; | |
723 | ||
724 | case sAllowGroups: | |
704b1659 | 725 | while ((arg = strdelim(&cp)) && *arg != '\0') { |
a8be9f80 | 726 | if (options->num_allow_groups >= MAX_ALLOW_GROUPS) |
54b974dc | 727 | fatal("%s line %d: too many allow groups.", |
a8be9f80 | 728 | filename, linenum); |
089fbbd2 | 729 | options->allow_groups[options->num_allow_groups++] = xstrdup(arg); |
5260325f | 730 | } |
731 | break; | |
732 | ||
733 | case sDenyGroups: | |
704b1659 | 734 | while ((arg = strdelim(&cp)) && *arg != '\0') { |
a8be9f80 | 735 | if (options->num_deny_groups >= MAX_DENY_GROUPS) |
54b974dc | 736 | fatal("%s line %d: too many deny groups.", |
a8be9f80 | 737 | filename, linenum); |
089fbbd2 | 738 | options->deny_groups[options->num_deny_groups++] = xstrdup(arg); |
5260325f | 739 | } |
740 | break; | |
741 | ||
a8be9f80 | 742 | case sCiphers: |
704b1659 | 743 | arg = strdelim(&cp); |
089fbbd2 | 744 | if (!arg || *arg == '\0') |
71276795 | 745 | fatal("%s line %d: Missing argument.", filename, linenum); |
089fbbd2 | 746 | if (!ciphers_valid(arg)) |
d0c832f3 | 747 | fatal("%s line %d: Bad SSH2 cipher spec '%s'.", |
089fbbd2 | 748 | filename, linenum, arg ? arg : "<NONE>"); |
a8be9f80 | 749 | if (options->ciphers == NULL) |
089fbbd2 | 750 | options->ciphers = xstrdup(arg); |
a8be9f80 | 751 | break; |
752 | ||
b2552997 | 753 | case sMacs: |
754 | arg = strdelim(&cp); | |
755 | if (!arg || *arg == '\0') | |
756 | fatal("%s line %d: Missing argument.", filename, linenum); | |
757 | if (!mac_valid(arg)) | |
758 | fatal("%s line %d: Bad SSH2 mac spec '%s'.", | |
759 | filename, linenum, arg ? arg : "<NONE>"); | |
760 | if (options->macs == NULL) | |
761 | options->macs = xstrdup(arg); | |
762 | break; | |
763 | ||
a8be9f80 | 764 | case sProtocol: |
765 | intptr = &options->protocol; | |
704b1659 | 766 | arg = strdelim(&cp); |
089fbbd2 | 767 | if (!arg || *arg == '\0') |
71276795 | 768 | fatal("%s line %d: Missing argument.", filename, linenum); |
089fbbd2 | 769 | value = proto_spec(arg); |
a8be9f80 | 770 | if (value == SSH_PROTO_UNKNOWN) |
771 | fatal("%s line %d: Bad protocol spec '%s'.", | |
089fbbd2 | 772 | filename, linenum, arg ? arg : "<NONE>"); |
a8be9f80 | 773 | if (*intptr == SSH_PROTO_UNKNOWN) |
774 | *intptr = value; | |
775 | break; | |
776 | ||
38c295d6 | 777 | case sSubsystem: |
778 | if(options->num_subsystems >= MAX_SUBSYSTEMS) { | |
779 | fatal("%s line %d: too many subsystems defined.", | |
780 | filename, linenum); | |
781 | } | |
704b1659 | 782 | arg = strdelim(&cp); |
089fbbd2 | 783 | if (!arg || *arg == '\0') |
38c295d6 | 784 | fatal("%s line %d: Missing subsystem name.", |
785 | filename, linenum); | |
786 | for (i = 0; i < options->num_subsystems; i++) | |
089fbbd2 | 787 | if(strcmp(arg, options->subsystem_name[i]) == 0) |
38c295d6 | 788 | fatal("%s line %d: Subsystem '%s' already defined.", |
089fbbd2 | 789 | filename, linenum, arg); |
790 | options->subsystem_name[options->num_subsystems] = xstrdup(arg); | |
704b1659 | 791 | arg = strdelim(&cp); |
089fbbd2 | 792 | if (!arg || *arg == '\0') |
38c295d6 | 793 | fatal("%s line %d: Missing subsystem command.", |
794 | filename, linenum); | |
089fbbd2 | 795 | options->subsystem_command[options->num_subsystems] = xstrdup(arg); |
38c295d6 | 796 | options->num_subsystems++; |
797 | break; | |
798 | ||
089fbbd2 | 799 | case sMaxStartups: |
c345cf9d | 800 | arg = strdelim(&cp); |
801 | if (!arg || *arg == '\0') | |
802 | fatal("%s line %d: Missing MaxStartups spec.", | |
803 | filename, linenum); | |
97de229c | 804 | if ((n = sscanf(arg, "%d:%d:%d", |
c345cf9d | 805 | &options->max_startups_begin, |
806 | &options->max_startups_rate, | |
97de229c | 807 | &options->max_startups)) == 3) { |
c345cf9d | 808 | if (options->max_startups_begin > |
809 | options->max_startups || | |
810 | options->max_startups_rate > 100 || | |
811 | options->max_startups_rate < 1) | |
97de229c | 812 | fatal("%s line %d: Illegal MaxStartups spec.", |
813 | filename, linenum); | |
814 | } else if (n != 1) | |
c345cf9d | 815 | fatal("%s line %d: Illegal MaxStartups spec.", |
97de229c | 816 | filename, linenum); |
817 | else | |
818 | options->max_startups = options->max_startups_begin; | |
819 | break; | |
089fbbd2 | 820 | |
eea39c02 | 821 | case sBanner: |
822 | charptr = &options->banner; | |
823 | goto parse_filename; | |
c8445989 | 824 | /* |
825 | * These options can contain %X options expanded at | |
826 | * connect time, so that you can specify paths like: | |
827 | * | |
828 | * AuthorizedKeysFile /etc/ssh_keys/%u | |
829 | */ | |
830 | case sAuthorizedKeysFile: | |
831 | case sAuthorizedKeysFile2: | |
832 | charptr = (opcode == sAuthorizedKeysFile ) ? | |
833 | &options->authorized_keys_file : | |
834 | &options->authorized_keys_file2; | |
835 | goto parse_filename; | |
e2b1fb42 | 836 | |
3ffc6336 | 837 | case sClientAliveInterval: |
838 | intptr = &options->client_alive_interval; | |
e2b1fb42 | 839 | goto parse_time; |
840 | ||
3ffc6336 | 841 | case sClientAliveCountMax: |
842 | intptr = &options->client_alive_count_max; | |
843 | goto parse_int; | |
e2b1fb42 | 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 | } |