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Commit | Line | Data |
---|---|---|
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" | |
4f4648f9 | 13 | RCSID("$OpenBSD: servconf.c,v 1.72 2001/03/25 13:16:10 stevesk Exp $"); |
42f11eb2 | 14 | |
15 | #ifdef KRB4 | |
16 | #include <krb.h> | |
17 | #endif | |
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 | |
48e671d5 | 34 | /* add listen address */ |
35 | void add_listen_addr(ServerOptions *options, char *addr); | |
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; | |
69 | options->rsa_authentication = -1; | |
fa08c86b | 70 | options->pubkey_authentication = -1; |
8efc0c15 | 71 | #ifdef KRB4 |
5260325f | 72 | options->kerberos_authentication = -1; |
73 | options->kerberos_or_local_passwd = -1; | |
74 | options->kerberos_ticket_cleanup = -1; | |
8efc0c15 | 75 | #endif |
76 | #ifdef AFS | |
5260325f | 77 | options->kerberos_tgt_passing = -1; |
78 | options->afs_token_passing = -1; | |
8efc0c15 | 79 | #endif |
5260325f | 80 | options->password_authentication = -1; |
94ec8c6b | 81 | options->kbd_interactive_authentication = -1; |
d464095c | 82 | options->challenge_reponse_authentication = -1; |
5260325f | 83 | options->permit_empty_passwd = -1; |
84 | options->use_login = -1; | |
33de75a3 | 85 | options->allow_tcp_forwarding = -1; |
5260325f | 86 | options->num_allow_users = 0; |
87 | options->num_deny_users = 0; | |
88 | options->num_allow_groups = 0; | |
89 | options->num_deny_groups = 0; | |
a8be9f80 | 90 | options->ciphers = NULL; |
b2552997 | 91 | options->macs = NULL; |
a8be9f80 | 92 | options->protocol = SSH_PROTO_UNKNOWN; |
1d1ffb87 | 93 | options->gateway_ports = -1; |
38c295d6 | 94 | options->num_subsystems = 0; |
c345cf9d | 95 | options->max_startups_begin = -1; |
96 | options->max_startups_rate = -1; | |
089fbbd2 | 97 | options->max_startups = -1; |
eea39c02 | 98 | options->banner = NULL; |
61e96248 | 99 | options->reverse_mapping_check = -1; |
8efc0c15 | 100 | } |
101 | ||
6ae2364d | 102 | void |
5260325f | 103 | fill_default_server_options(ServerOptions *options) |
8efc0c15 | 104 | { |
fa08c86b | 105 | if (options->protocol == SSH_PROTO_UNKNOWN) |
106 | options->protocol = SSH_PROTO_1|SSH_PROTO_2; | |
107 | if (options->num_host_key_files == 0) { | |
108 | /* fill default hostkeys for protocols */ | |
109 | if (options->protocol & SSH_PROTO_1) | |
42f11eb2 | 110 | options->host_key_files[options->num_host_key_files++] = _PATH_HOST_KEY_FILE; |
fa08c86b | 111 | if (options->protocol & SSH_PROTO_2) |
42f11eb2 | 112 | options->host_key_files[options->num_host_key_files++] = _PATH_HOST_DSA_KEY_FILE; |
fa08c86b | 113 | } |
48e671d5 | 114 | if (options->num_ports == 0) |
115 | options->ports[options->num_ports++] = SSH_DEFAULT_PORT; | |
116 | if (options->listen_addrs == NULL) | |
117 | add_listen_addr(options, NULL); | |
0fbe8c74 | 118 | if (options->pid_file == NULL) |
42f11eb2 | 119 | options->pid_file = _PATH_SSH_DAEMON_PID_FILE; |
5260325f | 120 | if (options->server_key_bits == -1) |
121 | options->server_key_bits = 768; | |
122 | if (options->login_grace_time == -1) | |
123 | options->login_grace_time = 600; | |
124 | if (options->key_regeneration_time == -1) | |
125 | options->key_regeneration_time = 3600; | |
15853e93 | 126 | if (options->permit_root_login == PERMIT_NOT_SET) |
127 | options->permit_root_login = PERMIT_YES; | |
5260325f | 128 | if (options->ignore_rhosts == -1) |
c8d54615 | 129 | options->ignore_rhosts = 1; |
5260325f | 130 | if (options->ignore_user_known_hosts == -1) |
131 | options->ignore_user_known_hosts = 0; | |
132 | if (options->check_mail == -1) | |
133 | options->check_mail = 0; | |
134 | if (options->print_motd == -1) | |
135 | options->print_motd = 1; | |
4f4648f9 | 136 | if (options->print_lastlog == -1) |
137 | options->print_lastlog = 1; | |
5260325f | 138 | if (options->x11_forwarding == -1) |
c8d54615 | 139 | options->x11_forwarding = 0; |
5260325f | 140 | if (options->x11_display_offset == -1) |
c8d54615 | 141 | options->x11_display_offset = 10; |
fa649821 | 142 | #ifdef XAUTH_PATH |
143 | if (options->xauth_location == NULL) | |
144 | options->xauth_location = XAUTH_PATH; | |
145 | #endif /* XAUTH_PATH */ | |
5260325f | 146 | if (options->strict_modes == -1) |
147 | options->strict_modes = 1; | |
148 | if (options->keepalives == -1) | |
149 | options->keepalives = 1; | |
150 | if (options->log_facility == (SyslogFacility) (-1)) | |
151 | options->log_facility = SYSLOG_FACILITY_AUTH; | |
152 | if (options->log_level == (LogLevel) (-1)) | |
59c97189 | 153 | options->log_level = SYSLOG_LEVEL_INFO; |
5260325f | 154 | if (options->rhosts_authentication == -1) |
155 | options->rhosts_authentication = 0; | |
156 | if (options->rhosts_rsa_authentication == -1) | |
c8d54615 | 157 | options->rhosts_rsa_authentication = 0; |
5260325f | 158 | if (options->rsa_authentication == -1) |
159 | options->rsa_authentication = 1; | |
fa08c86b | 160 | if (options->pubkey_authentication == -1) |
161 | options->pubkey_authentication = 1; | |
8efc0c15 | 162 | #ifdef KRB4 |
5260325f | 163 | if (options->kerberos_authentication == -1) |
164 | options->kerberos_authentication = (access(KEYFILE, R_OK) == 0); | |
165 | if (options->kerberos_or_local_passwd == -1) | |
166 | options->kerberos_or_local_passwd = 1; | |
167 | if (options->kerberos_ticket_cleanup == -1) | |
168 | options->kerberos_ticket_cleanup = 1; | |
8efc0c15 | 169 | #endif /* KRB4 */ |
170 | #ifdef AFS | |
5260325f | 171 | if (options->kerberos_tgt_passing == -1) |
172 | options->kerberos_tgt_passing = 0; | |
173 | if (options->afs_token_passing == -1) | |
174 | options->afs_token_passing = k_hasafs(); | |
8efc0c15 | 175 | #endif /* AFS */ |
5260325f | 176 | if (options->password_authentication == -1) |
177 | options->password_authentication = 1; | |
94ec8c6b | 178 | if (options->kbd_interactive_authentication == -1) |
179 | options->kbd_interactive_authentication = 0; | |
d464095c | 180 | if (options->challenge_reponse_authentication == -1) |
181 | options->challenge_reponse_authentication = 1; | |
5260325f | 182 | if (options->permit_empty_passwd == -1) |
c8d54615 | 183 | options->permit_empty_passwd = 0; |
5260325f | 184 | if (options->use_login == -1) |
185 | options->use_login = 0; | |
33de75a3 | 186 | if (options->allow_tcp_forwarding == -1) |
187 | options->allow_tcp_forwarding = 1; | |
1d1ffb87 | 188 | if (options->gateway_ports == -1) |
189 | options->gateway_ports = 0; | |
089fbbd2 | 190 | if (options->max_startups == -1) |
191 | options->max_startups = 10; | |
c345cf9d | 192 | if (options->max_startups_rate == -1) |
193 | options->max_startups_rate = 100; /* 100% */ | |
194 | if (options->max_startups_begin == -1) | |
195 | options->max_startups_begin = options->max_startups; | |
61e96248 | 196 | if (options->reverse_mapping_check == -1) |
197 | options->reverse_mapping_check = 0; | |
8efc0c15 | 198 | } |
199 | ||
8efc0c15 | 200 | /* Keyword tokens. */ |
5260325f | 201 | typedef enum { |
202 | sBadOption, /* == unknown option */ | |
203 | sPort, sHostKeyFile, sServerKeyBits, sLoginGraceTime, sKeyRegenerationTime, | |
204 | sPermitRootLogin, sLogFacility, sLogLevel, | |
205 | sRhostsAuthentication, sRhostsRSAAuthentication, sRSAAuthentication, | |
8efc0c15 | 206 | #ifdef KRB4 |
5260325f | 207 | sKerberosAuthentication, sKerberosOrLocalPasswd, sKerberosTicketCleanup, |
8efc0c15 | 208 | #endif |
209 | #ifdef AFS | |
5260325f | 210 | sKerberosTgtPassing, sAFSTokenPassing, |
8efc0c15 | 211 | #endif |
d464095c | 212 | sChallengeResponseAuthentication, |
94ec8c6b | 213 | sPasswordAuthentication, sKbdInteractiveAuthentication, sListenAddress, |
4f4648f9 | 214 | sPrintMotd, sPrintLastLog, sIgnoreRhosts, |
215 | sX11Forwarding, sX11DisplayOffset, | |
9c81df4c | 216 | sStrictModes, sEmptyPasswd, sKeepAlives, sCheckMail, |
33de75a3 | 217 | sUseLogin, sAllowTcpForwarding, |
218 | sAllowUsers, sDenyUsers, sAllowGroups, sDenyGroups, | |
b2552997 | 219 | sIgnoreUserKnownHosts, sCiphers, sMacs, sProtocol, sPidFile, |
fa08c86b | 220 | sGatewayPorts, sPubkeyAuthentication, sXAuthLocation, sSubsystem, sMaxStartups, |
61e96248 | 221 | sBanner, sReverseMappingCheck |
8efc0c15 | 222 | } ServerOpCodes; |
223 | ||
224 | /* Textual representation of the tokens. */ | |
5260325f | 225 | static struct { |
226 | const char *name; | |
227 | ServerOpCodes opcode; | |
228 | } keywords[] = { | |
229 | { "port", sPort }, | |
230 | { "hostkey", sHostKeyFile }, | |
fa08c86b | 231 | { "hostdsakey", sHostKeyFile }, /* alias */ |
2b87da3b | 232 | { "pidfile", sPidFile }, |
5260325f | 233 | { "serverkeybits", sServerKeyBits }, |
234 | { "logingracetime", sLoginGraceTime }, | |
235 | { "keyregenerationinterval", sKeyRegenerationTime }, | |
236 | { "permitrootlogin", sPermitRootLogin }, | |
237 | { "syslogfacility", sLogFacility }, | |
238 | { "loglevel", sLogLevel }, | |
239 | { "rhostsauthentication", sRhostsAuthentication }, | |
240 | { "rhostsrsaauthentication", sRhostsRSAAuthentication }, | |
241 | { "rsaauthentication", sRSAAuthentication }, | |
fa08c86b | 242 | { "pubkeyauthentication", sPubkeyAuthentication }, |
243 | { "dsaauthentication", sPubkeyAuthentication }, /* alias */ | |
8efc0c15 | 244 | #ifdef KRB4 |
5260325f | 245 | { "kerberosauthentication", sKerberosAuthentication }, |
246 | { "kerberosorlocalpasswd", sKerberosOrLocalPasswd }, | |
247 | { "kerberosticketcleanup", sKerberosTicketCleanup }, | |
8efc0c15 | 248 | #endif |
249 | #ifdef AFS | |
5260325f | 250 | { "kerberostgtpassing", sKerberosTgtPassing }, |
251 | { "afstokenpassing", sAFSTokenPassing }, | |
8efc0c15 | 252 | #endif |
5260325f | 253 | { "passwordauthentication", sPasswordAuthentication }, |
94ec8c6b | 254 | { "kbdinteractiveauthentication", sKbdInteractiveAuthentication }, |
d464095c | 255 | { "challengeresponseauthentication", sChallengeResponseAuthentication }, |
256 | { "skeyauthentication", sChallengeResponseAuthentication }, /* alias */ | |
5260325f | 257 | { "checkmail", sCheckMail }, |
258 | { "listenaddress", sListenAddress }, | |
259 | { "printmotd", sPrintMotd }, | |
4f4648f9 | 260 | { "printlastlog", sPrintLastLog }, |
5260325f | 261 | { "ignorerhosts", sIgnoreRhosts }, |
262 | { "ignoreuserknownhosts", sIgnoreUserKnownHosts }, | |
263 | { "x11forwarding", sX11Forwarding }, | |
264 | { "x11displayoffset", sX11DisplayOffset }, | |
fa649821 | 265 | { "xauthlocation", sXAuthLocation }, |
5260325f | 266 | { "strictmodes", sStrictModes }, |
267 | { "permitemptypasswords", sEmptyPasswd }, | |
268 | { "uselogin", sUseLogin }, | |
5260325f | 269 | { "keepalive", sKeepAlives }, |
33de75a3 | 270 | { "allowtcpforwarding", sAllowTcpForwarding }, |
5260325f | 271 | { "allowusers", sAllowUsers }, |
272 | { "denyusers", sDenyUsers }, | |
273 | { "allowgroups", sAllowGroups }, | |
274 | { "denygroups", sDenyGroups }, | |
a8be9f80 | 275 | { "ciphers", sCiphers }, |
b2552997 | 276 | { "macs", sMacs }, |
a8be9f80 | 277 | { "protocol", sProtocol }, |
1d1ffb87 | 278 | { "gatewayports", sGatewayPorts }, |
38c295d6 | 279 | { "subsystem", sSubsystem }, |
089fbbd2 | 280 | { "maxstartups", sMaxStartups }, |
eea39c02 | 281 | { "banner", sBanner }, |
61e96248 | 282 | { "reversemappingcheck", sReverseMappingCheck }, |
5260325f | 283 | { NULL, 0 } |
8efc0c15 | 284 | }; |
285 | ||
aa3378df | 286 | /* |
287 | * Returns the number of the token pointed to by cp of length len. Never | |
288 | * returns if the token is not known. | |
289 | */ | |
8efc0c15 | 290 | |
6ae2364d | 291 | static ServerOpCodes |
5260325f | 292 | parse_token(const char *cp, const char *filename, |
293 | int linenum) | |
8efc0c15 | 294 | { |
1e3b8b07 | 295 | u_int i; |
8efc0c15 | 296 | |
5260325f | 297 | for (i = 0; keywords[i].name; i++) |
aa3378df | 298 | if (strcasecmp(cp, keywords[i].name) == 0) |
5260325f | 299 | return keywords[i].opcode; |
8efc0c15 | 300 | |
5260325f | 301 | fprintf(stderr, "%s: line %d: Bad configuration option: %s\n", |
302 | filename, linenum, cp); | |
303 | return sBadOption; | |
8efc0c15 | 304 | } |
305 | ||
48e671d5 | 306 | /* |
307 | * add listen address | |
308 | */ | |
6ae2364d | 309 | void |
48e671d5 | 310 | add_listen_addr(ServerOptions *options, char *addr) |
311 | { | |
48e671d5 | 312 | struct addrinfo hints, *ai, *aitop; |
313 | char strport[NI_MAXSERV]; | |
314 | int gaierr; | |
315 | int i; | |
316 | ||
317 | if (options->num_ports == 0) | |
318 | options->ports[options->num_ports++] = SSH_DEFAULT_PORT; | |
319 | for (i = 0; i < options->num_ports; i++) { | |
320 | memset(&hints, 0, sizeof(hints)); | |
321 | hints.ai_family = IPv4or6; | |
322 | hints.ai_socktype = SOCK_STREAM; | |
323 | hints.ai_flags = (addr == NULL) ? AI_PASSIVE : 0; | |
324 | snprintf(strport, sizeof strport, "%d", options->ports[i]); | |
325 | if ((gaierr = getaddrinfo(addr, strport, &hints, &aitop)) != 0) | |
54b974dc | 326 | fatal("bad addr or host: %s (%s)", |
48e671d5 | 327 | addr ? addr : "<NULL>", |
328 | gai_strerror(gaierr)); | |
329 | for (ai = aitop; ai->ai_next; ai = ai->ai_next) | |
330 | ; | |
331 | ai->ai_next = options->listen_addrs; | |
332 | options->listen_addrs = aitop; | |
333 | } | |
334 | } | |
335 | ||
8efc0c15 | 336 | /* Reads the server configuration file. */ |
337 | ||
6ae2364d | 338 | void |
5260325f | 339 | read_server_config(ServerOptions *options, const char *filename) |
8efc0c15 | 340 | { |
5260325f | 341 | FILE *f; |
342 | char line[1024]; | |
089fbbd2 | 343 | char *cp, **charptr, *arg; |
5260325f | 344 | int linenum, *intptr, value; |
345 | int bad_options = 0; | |
346 | ServerOpCodes opcode; | |
38c295d6 | 347 | int i; |
5260325f | 348 | |
349 | f = fopen(filename, "r"); | |
350 | if (!f) { | |
351 | perror(filename); | |
8efc0c15 | 352 | exit(1); |
5260325f | 353 | } |
354 | linenum = 0; | |
355 | while (fgets(line, sizeof(line), f)) { | |
356 | linenum++; | |
704b1659 | 357 | cp = line; |
358 | arg = strdelim(&cp); | |
359 | /* Ignore leading whitespace */ | |
360 | if (*arg == '\0') | |
361 | arg = strdelim(&cp); | |
42f11eb2 | 362 | if (!arg || !*arg || *arg == '#') |
5260325f | 363 | continue; |
fa08c86b | 364 | intptr = NULL; |
365 | charptr = NULL; | |
089fbbd2 | 366 | opcode = parse_token(arg, filename, linenum); |
5260325f | 367 | switch (opcode) { |
368 | case sBadOption: | |
369 | bad_options++; | |
370 | continue; | |
371 | case sPort: | |
48e671d5 | 372 | /* ignore ports from configfile if cmdline specifies ports */ |
373 | if (options->ports_from_cmdline) | |
374 | continue; | |
375 | if (options->listen_addrs != NULL) | |
376 | fatal("%s line %d: ports must be specified before " | |
377 | "ListenAdress.\n", filename, linenum); | |
378 | if (options->num_ports >= MAX_PORTS) | |
54b974dc | 379 | fatal("%s line %d: too many ports.", |
6ae2364d | 380 | filename, linenum); |
704b1659 | 381 | arg = strdelim(&cp); |
089fbbd2 | 382 | if (!arg || *arg == '\0') |
54b974dc | 383 | fatal("%s line %d: missing port number.", |
48e671d5 | 384 | filename, linenum); |
089fbbd2 | 385 | options->ports[options->num_ports++] = atoi(arg); |
48e671d5 | 386 | break; |
387 | ||
388 | case sServerKeyBits: | |
389 | intptr = &options->server_key_bits; | |
5260325f | 390 | parse_int: |
704b1659 | 391 | arg = strdelim(&cp); |
089fbbd2 | 392 | if (!arg || *arg == '\0') { |
5260325f | 393 | fprintf(stderr, "%s line %d: missing integer value.\n", |
394 | filename, linenum); | |
395 | exit(1); | |
396 | } | |
089fbbd2 | 397 | value = atoi(arg); |
5260325f | 398 | if (*intptr == -1) |
399 | *intptr = value; | |
400 | break; | |
401 | ||
5260325f | 402 | case sLoginGraceTime: |
403 | intptr = &options->login_grace_time; | |
404 | goto parse_int; | |
405 | ||
406 | case sKeyRegenerationTime: | |
407 | intptr = &options->key_regeneration_time; | |
408 | goto parse_int; | |
409 | ||
410 | case sListenAddress: | |
704b1659 | 411 | arg = strdelim(&cp); |
089fbbd2 | 412 | if (!arg || *arg == '\0') |
54b974dc | 413 | fatal("%s line %d: missing inet addr.", |
48e671d5 | 414 | filename, linenum); |
089fbbd2 | 415 | add_listen_addr(options, arg); |
5260325f | 416 | break; |
417 | ||
418 | case sHostKeyFile: | |
fa08c86b | 419 | intptr = &options->num_host_key_files; |
420 | if (*intptr >= MAX_HOSTKEYS) { | |
0c126dc9 | 421 | fprintf(stderr, |
422 | "%s line %d: too many host keys specified (max %d).\n", | |
fa08c86b | 423 | filename, linenum, MAX_HOSTKEYS); |
424 | exit(1); | |
425 | } | |
426 | charptr = &options->host_key_files[*intptr]; | |
fa649821 | 427 | parse_filename: |
704b1659 | 428 | arg = strdelim(&cp); |
089fbbd2 | 429 | if (!arg || *arg == '\0') { |
5260325f | 430 | fprintf(stderr, "%s line %d: missing file name.\n", |
0fbe8c74 | 431 | filename, linenum); |
432 | exit(1); | |
433 | } | |
fa08c86b | 434 | if (*charptr == NULL) { |
089fbbd2 | 435 | *charptr = tilde_expand_filename(arg, getuid()); |
fa08c86b | 436 | /* increase optional counter */ |
437 | if (intptr != NULL) | |
438 | *intptr = *intptr + 1; | |
439 | } | |
0fbe8c74 | 440 | break; |
441 | ||
442 | case sPidFile: | |
443 | charptr = &options->pid_file; | |
fa649821 | 444 | goto parse_filename; |
5260325f | 445 | |
5260325f | 446 | case sPermitRootLogin: |
447 | intptr = &options->permit_root_login; | |
704b1659 | 448 | arg = strdelim(&cp); |
089fbbd2 | 449 | if (!arg || *arg == '\0') { |
7c8f2a26 | 450 | fprintf(stderr, "%s line %d: missing yes/" |
451 | "without-password/forced-commands-only/no " | |
452 | "argument.\n", filename, linenum); | |
5260325f | 453 | exit(1); |
454 | } | |
089fbbd2 | 455 | if (strcmp(arg, "without-password") == 0) |
15853e93 | 456 | value = PERMIT_NO_PASSWD; |
457 | else if (strcmp(arg, "forced-commands-only") == 0) | |
458 | value = PERMIT_FORCED_ONLY; | |
089fbbd2 | 459 | else if (strcmp(arg, "yes") == 0) |
15853e93 | 460 | value = PERMIT_YES; |
089fbbd2 | 461 | else if (strcmp(arg, "no") == 0) |
15853e93 | 462 | value = PERMIT_NO; |
5260325f | 463 | else { |
15853e93 | 464 | fprintf(stderr, "%s line %d: Bad yes/" |
465 | "without-password/forced-commands-only/no " | |
466 | "argument: %s\n", filename, linenum, arg); | |
5260325f | 467 | exit(1); |
468 | } | |
469 | if (*intptr == -1) | |
470 | *intptr = value; | |
471 | break; | |
472 | ||
473 | case sIgnoreRhosts: | |
474 | intptr = &options->ignore_rhosts; | |
475 | parse_flag: | |
704b1659 | 476 | arg = strdelim(&cp); |
089fbbd2 | 477 | if (!arg || *arg == '\0') { |
5260325f | 478 | fprintf(stderr, "%s line %d: missing yes/no argument.\n", |
479 | filename, linenum); | |
480 | exit(1); | |
481 | } | |
089fbbd2 | 482 | if (strcmp(arg, "yes") == 0) |
5260325f | 483 | value = 1; |
089fbbd2 | 484 | else if (strcmp(arg, "no") == 0) |
5260325f | 485 | value = 0; |
486 | else { | |
487 | fprintf(stderr, "%s line %d: Bad yes/no argument: %s\n", | |
089fbbd2 | 488 | filename, linenum, arg); |
5260325f | 489 | exit(1); |
490 | } | |
491 | if (*intptr == -1) | |
492 | *intptr = value; | |
493 | break; | |
494 | ||
495 | case sIgnoreUserKnownHosts: | |
496 | intptr = &options->ignore_user_known_hosts; | |
c8d54615 | 497 | goto parse_flag; |
5260325f | 498 | |
499 | case sRhostsAuthentication: | |
500 | intptr = &options->rhosts_authentication; | |
501 | goto parse_flag; | |
502 | ||
503 | case sRhostsRSAAuthentication: | |
504 | intptr = &options->rhosts_rsa_authentication; | |
505 | goto parse_flag; | |
506 | ||
507 | case sRSAAuthentication: | |
508 | intptr = &options->rsa_authentication; | |
509 | goto parse_flag; | |
510 | ||
fa08c86b | 511 | case sPubkeyAuthentication: |
512 | intptr = &options->pubkey_authentication; | |
1d1ffb87 | 513 | goto parse_flag; |
514 | ||
8efc0c15 | 515 | #ifdef KRB4 |
5260325f | 516 | case sKerberosAuthentication: |
517 | intptr = &options->kerberos_authentication; | |
518 | goto parse_flag; | |
519 | ||
520 | case sKerberosOrLocalPasswd: | |
521 | intptr = &options->kerberos_or_local_passwd; | |
522 | goto parse_flag; | |
523 | ||
524 | case sKerberosTicketCleanup: | |
525 | intptr = &options->kerberos_ticket_cleanup; | |
526 | goto parse_flag; | |
8efc0c15 | 527 | #endif |
5260325f | 528 | |
8efc0c15 | 529 | #ifdef AFS |
5260325f | 530 | case sKerberosTgtPassing: |
531 | intptr = &options->kerberos_tgt_passing; | |
532 | goto parse_flag; | |
8efc0c15 | 533 | |
5260325f | 534 | case sAFSTokenPassing: |
535 | intptr = &options->afs_token_passing; | |
536 | goto parse_flag; | |
8efc0c15 | 537 | #endif |
538 | ||
5260325f | 539 | case sPasswordAuthentication: |
540 | intptr = &options->password_authentication; | |
541 | goto parse_flag; | |
8efc0c15 | 542 | |
94ec8c6b | 543 | case sKbdInteractiveAuthentication: |
544 | intptr = &options->kbd_interactive_authentication; | |
545 | goto parse_flag; | |
546 | ||
5260325f | 547 | case sCheckMail: |
548 | intptr = &options->check_mail; | |
549 | goto parse_flag; | |
8efc0c15 | 550 | |
d464095c | 551 | case sChallengeResponseAuthentication: |
552 | intptr = &options->challenge_reponse_authentication; | |
5260325f | 553 | goto parse_flag; |
8efc0c15 | 554 | |
5260325f | 555 | case sPrintMotd: |
556 | intptr = &options->print_motd; | |
557 | goto parse_flag; | |
558 | ||
4f4648f9 | 559 | case sPrintLastLog: |
560 | intptr = &options->print_lastlog; | |
561 | goto parse_flag; | |
562 | ||
5260325f | 563 | case sX11Forwarding: |
564 | intptr = &options->x11_forwarding; | |
565 | goto parse_flag; | |
566 | ||
567 | case sX11DisplayOffset: | |
568 | intptr = &options->x11_display_offset; | |
569 | goto parse_int; | |
570 | ||
fa649821 | 571 | case sXAuthLocation: |
572 | charptr = &options->xauth_location; | |
573 | goto parse_filename; | |
2b87da3b | 574 | |
5260325f | 575 | case sStrictModes: |
576 | intptr = &options->strict_modes; | |
577 | goto parse_flag; | |
578 | ||
579 | case sKeepAlives: | |
580 | intptr = &options->keepalives; | |
581 | goto parse_flag; | |
582 | ||
583 | case sEmptyPasswd: | |
584 | intptr = &options->permit_empty_passwd; | |
585 | goto parse_flag; | |
586 | ||
587 | case sUseLogin: | |
588 | intptr = &options->use_login; | |
589 | goto parse_flag; | |
590 | ||
1d1ffb87 | 591 | case sGatewayPorts: |
592 | intptr = &options->gateway_ports; | |
593 | goto parse_flag; | |
594 | ||
61e96248 | 595 | case sReverseMappingCheck: |
596 | intptr = &options->reverse_mapping_check; | |
597 | goto parse_flag; | |
598 | ||
5260325f | 599 | case sLogFacility: |
600 | intptr = (int *) &options->log_facility; | |
704b1659 | 601 | arg = strdelim(&cp); |
089fbbd2 | 602 | value = log_facility_number(arg); |
5260325f | 603 | if (value == (SyslogFacility) - 1) |
54b974dc | 604 | fatal("%.200s line %d: unsupported log facility '%s'", |
089fbbd2 | 605 | filename, linenum, arg ? arg : "<NONE>"); |
5260325f | 606 | if (*intptr == -1) |
607 | *intptr = (SyslogFacility) value; | |
608 | break; | |
609 | ||
610 | case sLogLevel: | |
611 | intptr = (int *) &options->log_level; | |
704b1659 | 612 | arg = strdelim(&cp); |
089fbbd2 | 613 | value = log_level_number(arg); |
5260325f | 614 | if (value == (LogLevel) - 1) |
54b974dc | 615 | fatal("%.200s line %d: unsupported log level '%s'", |
089fbbd2 | 616 | filename, linenum, arg ? arg : "<NONE>"); |
5260325f | 617 | if (*intptr == -1) |
618 | *intptr = (LogLevel) value; | |
619 | break; | |
620 | ||
33de75a3 | 621 | case sAllowTcpForwarding: |
622 | intptr = &options->allow_tcp_forwarding; | |
623 | goto parse_flag; | |
624 | ||
5260325f | 625 | case sAllowUsers: |
704b1659 | 626 | while ((arg = strdelim(&cp)) && *arg != '\0') { |
a8be9f80 | 627 | if (options->num_allow_users >= MAX_ALLOW_USERS) |
54b974dc | 628 | fatal("%s line %d: too many allow users.", |
a8be9f80 | 629 | filename, linenum); |
089fbbd2 | 630 | options->allow_users[options->num_allow_users++] = xstrdup(arg); |
5260325f | 631 | } |
632 | break; | |
633 | ||
634 | case sDenyUsers: | |
704b1659 | 635 | while ((arg = strdelim(&cp)) && *arg != '\0') { |
a8be9f80 | 636 | if (options->num_deny_users >= MAX_DENY_USERS) |
54b974dc | 637 | fatal( "%s line %d: too many deny users.", |
a8be9f80 | 638 | filename, linenum); |
089fbbd2 | 639 | options->deny_users[options->num_deny_users++] = xstrdup(arg); |
5260325f | 640 | } |
641 | break; | |
642 | ||
643 | case sAllowGroups: | |
704b1659 | 644 | while ((arg = strdelim(&cp)) && *arg != '\0') { |
a8be9f80 | 645 | if (options->num_allow_groups >= MAX_ALLOW_GROUPS) |
54b974dc | 646 | fatal("%s line %d: too many allow groups.", |
a8be9f80 | 647 | filename, linenum); |
089fbbd2 | 648 | options->allow_groups[options->num_allow_groups++] = xstrdup(arg); |
5260325f | 649 | } |
650 | break; | |
651 | ||
652 | case sDenyGroups: | |
704b1659 | 653 | while ((arg = strdelim(&cp)) && *arg != '\0') { |
a8be9f80 | 654 | if (options->num_deny_groups >= MAX_DENY_GROUPS) |
54b974dc | 655 | fatal("%s line %d: too many deny groups.", |
a8be9f80 | 656 | filename, linenum); |
089fbbd2 | 657 | options->deny_groups[options->num_deny_groups++] = xstrdup(arg); |
5260325f | 658 | } |
659 | break; | |
660 | ||
a8be9f80 | 661 | case sCiphers: |
704b1659 | 662 | arg = strdelim(&cp); |
089fbbd2 | 663 | if (!arg || *arg == '\0') |
71276795 | 664 | fatal("%s line %d: Missing argument.", filename, linenum); |
089fbbd2 | 665 | if (!ciphers_valid(arg)) |
d0c832f3 | 666 | fatal("%s line %d: Bad SSH2 cipher spec '%s'.", |
089fbbd2 | 667 | filename, linenum, arg ? arg : "<NONE>"); |
a8be9f80 | 668 | if (options->ciphers == NULL) |
089fbbd2 | 669 | options->ciphers = xstrdup(arg); |
a8be9f80 | 670 | break; |
671 | ||
b2552997 | 672 | case sMacs: |
673 | arg = strdelim(&cp); | |
674 | if (!arg || *arg == '\0') | |
675 | fatal("%s line %d: Missing argument.", filename, linenum); | |
676 | if (!mac_valid(arg)) | |
677 | fatal("%s line %d: Bad SSH2 mac spec '%s'.", | |
678 | filename, linenum, arg ? arg : "<NONE>"); | |
679 | if (options->macs == NULL) | |
680 | options->macs = xstrdup(arg); | |
681 | break; | |
682 | ||
a8be9f80 | 683 | case sProtocol: |
684 | intptr = &options->protocol; | |
704b1659 | 685 | arg = strdelim(&cp); |
089fbbd2 | 686 | if (!arg || *arg == '\0') |
71276795 | 687 | fatal("%s line %d: Missing argument.", filename, linenum); |
089fbbd2 | 688 | value = proto_spec(arg); |
a8be9f80 | 689 | if (value == SSH_PROTO_UNKNOWN) |
690 | fatal("%s line %d: Bad protocol spec '%s'.", | |
089fbbd2 | 691 | filename, linenum, arg ? arg : "<NONE>"); |
a8be9f80 | 692 | if (*intptr == SSH_PROTO_UNKNOWN) |
693 | *intptr = value; | |
694 | break; | |
695 | ||
38c295d6 | 696 | case sSubsystem: |
697 | if(options->num_subsystems >= MAX_SUBSYSTEMS) { | |
698 | fatal("%s line %d: too many subsystems defined.", | |
699 | filename, linenum); | |
700 | } | |
704b1659 | 701 | arg = strdelim(&cp); |
089fbbd2 | 702 | if (!arg || *arg == '\0') |
38c295d6 | 703 | fatal("%s line %d: Missing subsystem name.", |
704 | filename, linenum); | |
705 | for (i = 0; i < options->num_subsystems; i++) | |
089fbbd2 | 706 | if(strcmp(arg, options->subsystem_name[i]) == 0) |
38c295d6 | 707 | fatal("%s line %d: Subsystem '%s' already defined.", |
089fbbd2 | 708 | filename, linenum, arg); |
709 | options->subsystem_name[options->num_subsystems] = xstrdup(arg); | |
704b1659 | 710 | arg = strdelim(&cp); |
089fbbd2 | 711 | if (!arg || *arg == '\0') |
38c295d6 | 712 | fatal("%s line %d: Missing subsystem command.", |
713 | filename, linenum); | |
089fbbd2 | 714 | options->subsystem_command[options->num_subsystems] = xstrdup(arg); |
38c295d6 | 715 | options->num_subsystems++; |
716 | break; | |
717 | ||
089fbbd2 | 718 | case sMaxStartups: |
c345cf9d | 719 | arg = strdelim(&cp); |
720 | if (!arg || *arg == '\0') | |
721 | fatal("%s line %d: Missing MaxStartups spec.", | |
722 | filename, linenum); | |
723 | if (sscanf(arg, "%d:%d:%d", | |
724 | &options->max_startups_begin, | |
725 | &options->max_startups_rate, | |
726 | &options->max_startups) == 3) { | |
727 | if (options->max_startups_begin > | |
728 | options->max_startups || | |
729 | options->max_startups_rate > 100 || | |
730 | options->max_startups_rate < 1) | |
731 | fatal("%s line %d: Illegal MaxStartups spec.", | |
732 | filename, linenum); | |
733 | break; | |
734 | } | |
089fbbd2 | 735 | intptr = &options->max_startups; |
736 | goto parse_int; | |
737 | ||
eea39c02 | 738 | case sBanner: |
739 | charptr = &options->banner; | |
740 | goto parse_filename; | |
2b87da3b | 741 | |
5260325f | 742 | default: |
743 | fprintf(stderr, "%s line %d: Missing handler for opcode %s (%d)\n", | |
089fbbd2 | 744 | filename, linenum, arg, opcode); |
5260325f | 745 | exit(1); |
8efc0c15 | 746 | } |
704b1659 | 747 | if ((arg = strdelim(&cp)) != NULL && *arg != '\0') { |
2b87da3b | 748 | fprintf(stderr, |
089fbbd2 | 749 | "%s line %d: garbage at end of line; \"%.200s\".\n", |
750 | filename, linenum, arg); | |
5260325f | 751 | exit(1); |
8efc0c15 | 752 | } |
8efc0c15 | 753 | } |
5260325f | 754 | fclose(f); |
755 | if (bad_options > 0) { | |
756 | fprintf(stderr, "%s: terminating, %d bad configuration options\n", | |
757 | filename, bad_options); | |
758 | exit(1); | |
8efc0c15 | 759 | } |
8efc0c15 | 760 | } |