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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" | |
d464095c | 13 | RCSID("$OpenBSD: servconf.c,v 1.63 2001/01/22 23:06:39 markus 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" | |
31 | ||
8efc0c15 | 32 | |
48e671d5 | 33 | /* add listen address */ |
34 | void add_listen_addr(ServerOptions *options, char *addr); | |
35 | ||
42f11eb2 | 36 | /* AF_UNSPEC or AF_INET or AF_INET6 */ |
37 | extern int IPv4or6; | |
38 | ||
8efc0c15 | 39 | /* Initializes the server options to their default values. */ |
40 | ||
6ae2364d | 41 | void |
5260325f | 42 | initialize_server_options(ServerOptions *options) |
8efc0c15 | 43 | { |
5260325f | 44 | memset(options, 0, sizeof(*options)); |
48e671d5 | 45 | options->num_ports = 0; |
46 | options->ports_from_cmdline = 0; | |
47 | options->listen_addrs = NULL; | |
fa08c86b | 48 | options->num_host_key_files = 0; |
0fbe8c74 | 49 | options->pid_file = NULL; |
5260325f | 50 | options->server_key_bits = -1; |
51 | options->login_grace_time = -1; | |
52 | options->key_regeneration_time = -1; | |
53 | options->permit_root_login = -1; | |
54 | options->ignore_rhosts = -1; | |
55 | options->ignore_user_known_hosts = -1; | |
56 | options->print_motd = -1; | |
57 | options->check_mail = -1; | |
58 | options->x11_forwarding = -1; | |
59 | options->x11_display_offset = -1; | |
fa649821 | 60 | options->xauth_location = NULL; |
5260325f | 61 | options->strict_modes = -1; |
62 | options->keepalives = -1; | |
63 | options->log_facility = (SyslogFacility) - 1; | |
64 | options->log_level = (LogLevel) - 1; | |
65 | options->rhosts_authentication = -1; | |
66 | options->rhosts_rsa_authentication = -1; | |
67 | options->rsa_authentication = -1; | |
fa08c86b | 68 | options->pubkey_authentication = -1; |
8efc0c15 | 69 | #ifdef KRB4 |
5260325f | 70 | options->kerberos_authentication = -1; |
71 | options->kerberos_or_local_passwd = -1; | |
72 | options->kerberos_ticket_cleanup = -1; | |
8efc0c15 | 73 | #endif |
74 | #ifdef AFS | |
5260325f | 75 | options->kerberos_tgt_passing = -1; |
76 | options->afs_token_passing = -1; | |
8efc0c15 | 77 | #endif |
5260325f | 78 | options->password_authentication = -1; |
94ec8c6b | 79 | options->kbd_interactive_authentication = -1; |
d464095c | 80 | options->challenge_reponse_authentication = -1; |
5260325f | 81 | options->permit_empty_passwd = -1; |
82 | options->use_login = -1; | |
33de75a3 | 83 | options->allow_tcp_forwarding = -1; |
5260325f | 84 | options->num_allow_users = 0; |
85 | options->num_deny_users = 0; | |
86 | options->num_allow_groups = 0; | |
87 | options->num_deny_groups = 0; | |
a8be9f80 | 88 | options->ciphers = NULL; |
89 | options->protocol = SSH_PROTO_UNKNOWN; | |
1d1ffb87 | 90 | options->gateway_ports = -1; |
38c295d6 | 91 | options->num_subsystems = 0; |
c345cf9d | 92 | options->max_startups_begin = -1; |
93 | options->max_startups_rate = -1; | |
089fbbd2 | 94 | options->max_startups = -1; |
eea39c02 | 95 | options->banner = NULL; |
8efc0c15 | 96 | } |
97 | ||
6ae2364d | 98 | void |
5260325f | 99 | fill_default_server_options(ServerOptions *options) |
8efc0c15 | 100 | { |
fa08c86b | 101 | if (options->protocol == SSH_PROTO_UNKNOWN) |
102 | options->protocol = SSH_PROTO_1|SSH_PROTO_2; | |
103 | if (options->num_host_key_files == 0) { | |
104 | /* fill default hostkeys for protocols */ | |
105 | if (options->protocol & SSH_PROTO_1) | |
42f11eb2 | 106 | options->host_key_files[options->num_host_key_files++] = _PATH_HOST_KEY_FILE; |
fa08c86b | 107 | if (options->protocol & SSH_PROTO_2) |
42f11eb2 | 108 | options->host_key_files[options->num_host_key_files++] = _PATH_HOST_DSA_KEY_FILE; |
fa08c86b | 109 | } |
48e671d5 | 110 | if (options->num_ports == 0) |
111 | options->ports[options->num_ports++] = SSH_DEFAULT_PORT; | |
112 | if (options->listen_addrs == NULL) | |
113 | add_listen_addr(options, NULL); | |
0fbe8c74 | 114 | if (options->pid_file == NULL) |
42f11eb2 | 115 | options->pid_file = _PATH_SSH_DAEMON_PID_FILE; |
5260325f | 116 | if (options->server_key_bits == -1) |
117 | options->server_key_bits = 768; | |
118 | if (options->login_grace_time == -1) | |
119 | options->login_grace_time = 600; | |
120 | if (options->key_regeneration_time == -1) | |
121 | options->key_regeneration_time = 3600; | |
122 | if (options->permit_root_login == -1) | |
123 | options->permit_root_login = 1; /* yes */ | |
124 | if (options->ignore_rhosts == -1) | |
c8d54615 | 125 | options->ignore_rhosts = 1; |
5260325f | 126 | if (options->ignore_user_known_hosts == -1) |
127 | options->ignore_user_known_hosts = 0; | |
128 | if (options->check_mail == -1) | |
129 | options->check_mail = 0; | |
130 | if (options->print_motd == -1) | |
131 | options->print_motd = 1; | |
132 | if (options->x11_forwarding == -1) | |
c8d54615 | 133 | options->x11_forwarding = 0; |
5260325f | 134 | if (options->x11_display_offset == -1) |
c8d54615 | 135 | options->x11_display_offset = 10; |
fa649821 | 136 | #ifdef XAUTH_PATH |
137 | if (options->xauth_location == NULL) | |
138 | options->xauth_location = XAUTH_PATH; | |
139 | #endif /* XAUTH_PATH */ | |
5260325f | 140 | if (options->strict_modes == -1) |
141 | options->strict_modes = 1; | |
142 | if (options->keepalives == -1) | |
143 | options->keepalives = 1; | |
144 | if (options->log_facility == (SyslogFacility) (-1)) | |
145 | options->log_facility = SYSLOG_FACILITY_AUTH; | |
146 | if (options->log_level == (LogLevel) (-1)) | |
59c97189 | 147 | options->log_level = SYSLOG_LEVEL_INFO; |
5260325f | 148 | if (options->rhosts_authentication == -1) |
149 | options->rhosts_authentication = 0; | |
150 | if (options->rhosts_rsa_authentication == -1) | |
c8d54615 | 151 | options->rhosts_rsa_authentication = 0; |
5260325f | 152 | if (options->rsa_authentication == -1) |
153 | options->rsa_authentication = 1; | |
fa08c86b | 154 | if (options->pubkey_authentication == -1) |
155 | options->pubkey_authentication = 1; | |
8efc0c15 | 156 | #ifdef KRB4 |
5260325f | 157 | if (options->kerberos_authentication == -1) |
158 | options->kerberos_authentication = (access(KEYFILE, R_OK) == 0); | |
159 | if (options->kerberos_or_local_passwd == -1) | |
160 | options->kerberos_or_local_passwd = 1; | |
161 | if (options->kerberos_ticket_cleanup == -1) | |
162 | options->kerberos_ticket_cleanup = 1; | |
8efc0c15 | 163 | #endif /* KRB4 */ |
164 | #ifdef AFS | |
5260325f | 165 | if (options->kerberos_tgt_passing == -1) |
166 | options->kerberos_tgt_passing = 0; | |
167 | if (options->afs_token_passing == -1) | |
168 | options->afs_token_passing = k_hasafs(); | |
8efc0c15 | 169 | #endif /* AFS */ |
5260325f | 170 | if (options->password_authentication == -1) |
171 | options->password_authentication = 1; | |
94ec8c6b | 172 | if (options->kbd_interactive_authentication == -1) |
173 | options->kbd_interactive_authentication = 0; | |
d464095c | 174 | if (options->challenge_reponse_authentication == -1) |
175 | options->challenge_reponse_authentication = 1; | |
5260325f | 176 | if (options->permit_empty_passwd == -1) |
c8d54615 | 177 | options->permit_empty_passwd = 0; |
5260325f | 178 | if (options->use_login == -1) |
179 | options->use_login = 0; | |
33de75a3 | 180 | if (options->allow_tcp_forwarding == -1) |
181 | options->allow_tcp_forwarding = 1; | |
1d1ffb87 | 182 | if (options->gateway_ports == -1) |
183 | options->gateway_ports = 0; | |
089fbbd2 | 184 | if (options->max_startups == -1) |
185 | options->max_startups = 10; | |
c345cf9d | 186 | if (options->max_startups_rate == -1) |
187 | options->max_startups_rate = 100; /* 100% */ | |
188 | if (options->max_startups_begin == -1) | |
189 | options->max_startups_begin = options->max_startups; | |
8efc0c15 | 190 | } |
191 | ||
8efc0c15 | 192 | /* Keyword tokens. */ |
5260325f | 193 | typedef enum { |
194 | sBadOption, /* == unknown option */ | |
195 | sPort, sHostKeyFile, sServerKeyBits, sLoginGraceTime, sKeyRegenerationTime, | |
196 | sPermitRootLogin, sLogFacility, sLogLevel, | |
197 | sRhostsAuthentication, sRhostsRSAAuthentication, sRSAAuthentication, | |
8efc0c15 | 198 | #ifdef KRB4 |
5260325f | 199 | sKerberosAuthentication, sKerberosOrLocalPasswd, sKerberosTicketCleanup, |
8efc0c15 | 200 | #endif |
201 | #ifdef AFS | |
5260325f | 202 | sKerberosTgtPassing, sAFSTokenPassing, |
8efc0c15 | 203 | #endif |
d464095c | 204 | sChallengeResponseAuthentication, |
94ec8c6b | 205 | sPasswordAuthentication, sKbdInteractiveAuthentication, sListenAddress, |
5260325f | 206 | sPrintMotd, sIgnoreRhosts, sX11Forwarding, sX11DisplayOffset, |
207 | sStrictModes, sEmptyPasswd, sRandomSeedFile, sKeepAlives, sCheckMail, | |
33de75a3 | 208 | sUseLogin, sAllowTcpForwarding, |
209 | sAllowUsers, sDenyUsers, sAllowGroups, sDenyGroups, | |
fa08c86b | 210 | sIgnoreUserKnownHosts, sCiphers, sProtocol, sPidFile, |
211 | sGatewayPorts, sPubkeyAuthentication, sXAuthLocation, sSubsystem, sMaxStartups, | |
eea39c02 | 212 | sBanner |
8efc0c15 | 213 | } ServerOpCodes; |
214 | ||
215 | /* Textual representation of the tokens. */ | |
5260325f | 216 | static struct { |
217 | const char *name; | |
218 | ServerOpCodes opcode; | |
219 | } keywords[] = { | |
220 | { "port", sPort }, | |
221 | { "hostkey", sHostKeyFile }, | |
fa08c86b | 222 | { "hostdsakey", sHostKeyFile }, /* alias */ |
0fbe8c74 | 223 | { "pidfile", sPidFile }, |
5260325f | 224 | { "serverkeybits", sServerKeyBits }, |
225 | { "logingracetime", sLoginGraceTime }, | |
226 | { "keyregenerationinterval", sKeyRegenerationTime }, | |
227 | { "permitrootlogin", sPermitRootLogin }, | |
228 | { "syslogfacility", sLogFacility }, | |
229 | { "loglevel", sLogLevel }, | |
230 | { "rhostsauthentication", sRhostsAuthentication }, | |
231 | { "rhostsrsaauthentication", sRhostsRSAAuthentication }, | |
232 | { "rsaauthentication", sRSAAuthentication }, | |
fa08c86b | 233 | { "pubkeyauthentication", sPubkeyAuthentication }, |
234 | { "dsaauthentication", sPubkeyAuthentication }, /* alias */ | |
8efc0c15 | 235 | #ifdef KRB4 |
5260325f | 236 | { "kerberosauthentication", sKerberosAuthentication }, |
237 | { "kerberosorlocalpasswd", sKerberosOrLocalPasswd }, | |
238 | { "kerberosticketcleanup", sKerberosTicketCleanup }, | |
8efc0c15 | 239 | #endif |
240 | #ifdef AFS | |
5260325f | 241 | { "kerberostgtpassing", sKerberosTgtPassing }, |
242 | { "afstokenpassing", sAFSTokenPassing }, | |
8efc0c15 | 243 | #endif |
5260325f | 244 | { "passwordauthentication", sPasswordAuthentication }, |
94ec8c6b | 245 | { "kbdinteractiveauthentication", sKbdInteractiveAuthentication }, |
d464095c | 246 | { "challengeresponseauthentication", sChallengeResponseAuthentication }, |
247 | { "skeyauthentication", sChallengeResponseAuthentication }, /* alias */ | |
5260325f | 248 | { "checkmail", sCheckMail }, |
249 | { "listenaddress", sListenAddress }, | |
250 | { "printmotd", sPrintMotd }, | |
251 | { "ignorerhosts", sIgnoreRhosts }, | |
252 | { "ignoreuserknownhosts", sIgnoreUserKnownHosts }, | |
253 | { "x11forwarding", sX11Forwarding }, | |
254 | { "x11displayoffset", sX11DisplayOffset }, | |
fa649821 | 255 | { "xauthlocation", sXAuthLocation }, |
5260325f | 256 | { "strictmodes", sStrictModes }, |
257 | { "permitemptypasswords", sEmptyPasswd }, | |
258 | { "uselogin", sUseLogin }, | |
259 | { "randomseed", sRandomSeedFile }, | |
260 | { "keepalive", sKeepAlives }, | |
33de75a3 | 261 | { "allowtcpforwarding", sAllowTcpForwarding }, |
5260325f | 262 | { "allowusers", sAllowUsers }, |
263 | { "denyusers", sDenyUsers }, | |
264 | { "allowgroups", sAllowGroups }, | |
265 | { "denygroups", sDenyGroups }, | |
a8be9f80 | 266 | { "ciphers", sCiphers }, |
267 | { "protocol", sProtocol }, | |
1d1ffb87 | 268 | { "gatewayports", sGatewayPorts }, |
38c295d6 | 269 | { "subsystem", sSubsystem }, |
089fbbd2 | 270 | { "maxstartups", sMaxStartups }, |
eea39c02 | 271 | { "banner", sBanner }, |
5260325f | 272 | { NULL, 0 } |
8efc0c15 | 273 | }; |
274 | ||
aa3378df | 275 | /* |
276 | * Returns the number of the token pointed to by cp of length len. Never | |
277 | * returns if the token is not known. | |
278 | */ | |
8efc0c15 | 279 | |
6ae2364d | 280 | static ServerOpCodes |
5260325f | 281 | parse_token(const char *cp, const char *filename, |
282 | int linenum) | |
8efc0c15 | 283 | { |
1e3b8b07 | 284 | u_int i; |
8efc0c15 | 285 | |
5260325f | 286 | for (i = 0; keywords[i].name; i++) |
aa3378df | 287 | if (strcasecmp(cp, keywords[i].name) == 0) |
5260325f | 288 | return keywords[i].opcode; |
8efc0c15 | 289 | |
5260325f | 290 | fprintf(stderr, "%s: line %d: Bad configuration option: %s\n", |
291 | filename, linenum, cp); | |
292 | return sBadOption; | |
8efc0c15 | 293 | } |
294 | ||
48e671d5 | 295 | /* |
296 | * add listen address | |
297 | */ | |
6ae2364d | 298 | void |
48e671d5 | 299 | add_listen_addr(ServerOptions *options, char *addr) |
300 | { | |
48e671d5 | 301 | struct addrinfo hints, *ai, *aitop; |
302 | char strport[NI_MAXSERV]; | |
303 | int gaierr; | |
304 | int i; | |
305 | ||
306 | if (options->num_ports == 0) | |
307 | options->ports[options->num_ports++] = SSH_DEFAULT_PORT; | |
308 | for (i = 0; i < options->num_ports; i++) { | |
309 | memset(&hints, 0, sizeof(hints)); | |
310 | hints.ai_family = IPv4or6; | |
311 | hints.ai_socktype = SOCK_STREAM; | |
312 | hints.ai_flags = (addr == NULL) ? AI_PASSIVE : 0; | |
313 | snprintf(strport, sizeof strport, "%d", options->ports[i]); | |
314 | if ((gaierr = getaddrinfo(addr, strport, &hints, &aitop)) != 0) | |
315 | fatal("bad addr or host: %s (%s)\n", | |
316 | addr ? addr : "<NULL>", | |
317 | gai_strerror(gaierr)); | |
318 | for (ai = aitop; ai->ai_next; ai = ai->ai_next) | |
319 | ; | |
320 | ai->ai_next = options->listen_addrs; | |
321 | options->listen_addrs = aitop; | |
322 | } | |
323 | } | |
324 | ||
8efc0c15 | 325 | /* Reads the server configuration file. */ |
326 | ||
6ae2364d | 327 | void |
5260325f | 328 | read_server_config(ServerOptions *options, const char *filename) |
8efc0c15 | 329 | { |
5260325f | 330 | FILE *f; |
331 | char line[1024]; | |
089fbbd2 | 332 | char *cp, **charptr, *arg; |
5260325f | 333 | int linenum, *intptr, value; |
334 | int bad_options = 0; | |
335 | ServerOpCodes opcode; | |
38c295d6 | 336 | int i; |
5260325f | 337 | |
338 | f = fopen(filename, "r"); | |
339 | if (!f) { | |
340 | perror(filename); | |
8efc0c15 | 341 | exit(1); |
5260325f | 342 | } |
343 | linenum = 0; | |
344 | while (fgets(line, sizeof(line), f)) { | |
345 | linenum++; | |
704b1659 | 346 | cp = line; |
347 | arg = strdelim(&cp); | |
348 | /* Ignore leading whitespace */ | |
349 | if (*arg == '\0') | |
350 | arg = strdelim(&cp); | |
42f11eb2 | 351 | if (!arg || !*arg || *arg == '#') |
5260325f | 352 | continue; |
fa08c86b | 353 | intptr = NULL; |
354 | charptr = NULL; | |
089fbbd2 | 355 | opcode = parse_token(arg, filename, linenum); |
5260325f | 356 | switch (opcode) { |
357 | case sBadOption: | |
358 | bad_options++; | |
359 | continue; | |
360 | case sPort: | |
48e671d5 | 361 | /* ignore ports from configfile if cmdline specifies ports */ |
362 | if (options->ports_from_cmdline) | |
363 | continue; | |
364 | if (options->listen_addrs != NULL) | |
365 | fatal("%s line %d: ports must be specified before " | |
366 | "ListenAdress.\n", filename, linenum); | |
367 | if (options->num_ports >= MAX_PORTS) | |
368 | fatal("%s line %d: too many ports.\n", | |
6ae2364d | 369 | filename, linenum); |
704b1659 | 370 | arg = strdelim(&cp); |
089fbbd2 | 371 | if (!arg || *arg == '\0') |
48e671d5 | 372 | fatal("%s line %d: missing port number.\n", |
373 | filename, linenum); | |
089fbbd2 | 374 | options->ports[options->num_ports++] = atoi(arg); |
48e671d5 | 375 | break; |
376 | ||
377 | case sServerKeyBits: | |
378 | intptr = &options->server_key_bits; | |
5260325f | 379 | parse_int: |
704b1659 | 380 | arg = strdelim(&cp); |
089fbbd2 | 381 | if (!arg || *arg == '\0') { |
5260325f | 382 | fprintf(stderr, "%s line %d: missing integer value.\n", |
383 | filename, linenum); | |
384 | exit(1); | |
385 | } | |
089fbbd2 | 386 | value = atoi(arg); |
5260325f | 387 | if (*intptr == -1) |
388 | *intptr = value; | |
389 | break; | |
390 | ||
5260325f | 391 | case sLoginGraceTime: |
392 | intptr = &options->login_grace_time; | |
393 | goto parse_int; | |
394 | ||
395 | case sKeyRegenerationTime: | |
396 | intptr = &options->key_regeneration_time; | |
397 | goto parse_int; | |
398 | ||
399 | case sListenAddress: | |
704b1659 | 400 | arg = strdelim(&cp); |
089fbbd2 | 401 | if (!arg || *arg == '\0') |
48e671d5 | 402 | fatal("%s line %d: missing inet addr.\n", |
403 | filename, linenum); | |
089fbbd2 | 404 | add_listen_addr(options, arg); |
5260325f | 405 | break; |
406 | ||
407 | case sHostKeyFile: | |
fa08c86b | 408 | intptr = &options->num_host_key_files; |
409 | if (*intptr >= MAX_HOSTKEYS) { | |
410 | fprintf(stderr, "%s line %d: to many host keys specified (max %d).\n", | |
411 | filename, linenum, MAX_HOSTKEYS); | |
412 | exit(1); | |
413 | } | |
414 | charptr = &options->host_key_files[*intptr]; | |
fa649821 | 415 | parse_filename: |
704b1659 | 416 | arg = strdelim(&cp); |
089fbbd2 | 417 | if (!arg || *arg == '\0') { |
5260325f | 418 | fprintf(stderr, "%s line %d: missing file name.\n", |
0fbe8c74 | 419 | filename, linenum); |
420 | exit(1); | |
421 | } | |
fa08c86b | 422 | if (*charptr == NULL) { |
089fbbd2 | 423 | *charptr = tilde_expand_filename(arg, getuid()); |
fa08c86b | 424 | /* increase optional counter */ |
425 | if (intptr != NULL) | |
426 | *intptr = *intptr + 1; | |
427 | } | |
0fbe8c74 | 428 | break; |
429 | ||
430 | case sPidFile: | |
431 | charptr = &options->pid_file; | |
fa649821 | 432 | goto parse_filename; |
5260325f | 433 | |
434 | case sRandomSeedFile: | |
435 | fprintf(stderr, "%s line %d: \"randomseed\" option is obsolete.\n", | |
436 | filename, linenum); | |
704b1659 | 437 | arg = strdelim(&cp); |
5260325f | 438 | break; |
439 | ||
440 | case sPermitRootLogin: | |
441 | intptr = &options->permit_root_login; | |
704b1659 | 442 | arg = strdelim(&cp); |
089fbbd2 | 443 | if (!arg || *arg == '\0') { |
5260325f | 444 | fprintf(stderr, "%s line %d: missing yes/without-password/no argument.\n", |
445 | filename, linenum); | |
446 | exit(1); | |
447 | } | |
089fbbd2 | 448 | if (strcmp(arg, "without-password") == 0) |
5260325f | 449 | value = 2; |
089fbbd2 | 450 | else if (strcmp(arg, "yes") == 0) |
5260325f | 451 | value = 1; |
089fbbd2 | 452 | else if (strcmp(arg, "no") == 0) |
5260325f | 453 | value = 0; |
454 | else { | |
455 | fprintf(stderr, "%s line %d: Bad yes/without-password/no argument: %s\n", | |
089fbbd2 | 456 | filename, linenum, arg); |
5260325f | 457 | exit(1); |
458 | } | |
459 | if (*intptr == -1) | |
460 | *intptr = value; | |
461 | break; | |
462 | ||
463 | case sIgnoreRhosts: | |
464 | intptr = &options->ignore_rhosts; | |
465 | parse_flag: | |
704b1659 | 466 | arg = strdelim(&cp); |
089fbbd2 | 467 | if (!arg || *arg == '\0') { |
5260325f | 468 | fprintf(stderr, "%s line %d: missing yes/no argument.\n", |
469 | filename, linenum); | |
470 | exit(1); | |
471 | } | |
089fbbd2 | 472 | if (strcmp(arg, "yes") == 0) |
5260325f | 473 | value = 1; |
089fbbd2 | 474 | else if (strcmp(arg, "no") == 0) |
5260325f | 475 | value = 0; |
476 | else { | |
477 | fprintf(stderr, "%s line %d: Bad yes/no argument: %s\n", | |
089fbbd2 | 478 | filename, linenum, arg); |
5260325f | 479 | exit(1); |
480 | } | |
481 | if (*intptr == -1) | |
482 | *intptr = value; | |
483 | break; | |
484 | ||
485 | case sIgnoreUserKnownHosts: | |
486 | intptr = &options->ignore_user_known_hosts; | |
c8d54615 | 487 | goto parse_flag; |
5260325f | 488 | |
489 | case sRhostsAuthentication: | |
490 | intptr = &options->rhosts_authentication; | |
491 | goto parse_flag; | |
492 | ||
493 | case sRhostsRSAAuthentication: | |
494 | intptr = &options->rhosts_rsa_authentication; | |
495 | goto parse_flag; | |
496 | ||
497 | case sRSAAuthentication: | |
498 | intptr = &options->rsa_authentication; | |
499 | goto parse_flag; | |
500 | ||
fa08c86b | 501 | case sPubkeyAuthentication: |
502 | intptr = &options->pubkey_authentication; | |
1d1ffb87 | 503 | goto parse_flag; |
504 | ||
8efc0c15 | 505 | #ifdef KRB4 |
5260325f | 506 | case sKerberosAuthentication: |
507 | intptr = &options->kerberos_authentication; | |
508 | goto parse_flag; | |
509 | ||
510 | case sKerberosOrLocalPasswd: | |
511 | intptr = &options->kerberos_or_local_passwd; | |
512 | goto parse_flag; | |
513 | ||
514 | case sKerberosTicketCleanup: | |
515 | intptr = &options->kerberos_ticket_cleanup; | |
516 | goto parse_flag; | |
8efc0c15 | 517 | #endif |
5260325f | 518 | |
8efc0c15 | 519 | #ifdef AFS |
5260325f | 520 | case sKerberosTgtPassing: |
521 | intptr = &options->kerberos_tgt_passing; | |
522 | goto parse_flag; | |
8efc0c15 | 523 | |
5260325f | 524 | case sAFSTokenPassing: |
525 | intptr = &options->afs_token_passing; | |
526 | goto parse_flag; | |
8efc0c15 | 527 | #endif |
528 | ||
5260325f | 529 | case sPasswordAuthentication: |
530 | intptr = &options->password_authentication; | |
531 | goto parse_flag; | |
8efc0c15 | 532 | |
94ec8c6b | 533 | case sKbdInteractiveAuthentication: |
534 | intptr = &options->kbd_interactive_authentication; | |
535 | goto parse_flag; | |
536 | ||
5260325f | 537 | case sCheckMail: |
538 | intptr = &options->check_mail; | |
539 | goto parse_flag; | |
8efc0c15 | 540 | |
d464095c | 541 | case sChallengeResponseAuthentication: |
542 | intptr = &options->challenge_reponse_authentication; | |
5260325f | 543 | goto parse_flag; |
8efc0c15 | 544 | |
5260325f | 545 | case sPrintMotd: |
546 | intptr = &options->print_motd; | |
547 | goto parse_flag; | |
548 | ||
549 | case sX11Forwarding: | |
550 | intptr = &options->x11_forwarding; | |
551 | goto parse_flag; | |
552 | ||
553 | case sX11DisplayOffset: | |
554 | intptr = &options->x11_display_offset; | |
555 | goto parse_int; | |
556 | ||
fa649821 | 557 | case sXAuthLocation: |
558 | charptr = &options->xauth_location; | |
559 | goto parse_filename; | |
560 | ||
5260325f | 561 | case sStrictModes: |
562 | intptr = &options->strict_modes; | |
563 | goto parse_flag; | |
564 | ||
565 | case sKeepAlives: | |
566 | intptr = &options->keepalives; | |
567 | goto parse_flag; | |
568 | ||
569 | case sEmptyPasswd: | |
570 | intptr = &options->permit_empty_passwd; | |
571 | goto parse_flag; | |
572 | ||
573 | case sUseLogin: | |
574 | intptr = &options->use_login; | |
575 | goto parse_flag; | |
576 | ||
1d1ffb87 | 577 | case sGatewayPorts: |
578 | intptr = &options->gateway_ports; | |
579 | goto parse_flag; | |
580 | ||
5260325f | 581 | case sLogFacility: |
582 | intptr = (int *) &options->log_facility; | |
704b1659 | 583 | arg = strdelim(&cp); |
089fbbd2 | 584 | value = log_facility_number(arg); |
5260325f | 585 | if (value == (SyslogFacility) - 1) |
586 | fatal("%.200s line %d: unsupported log facility '%s'\n", | |
089fbbd2 | 587 | filename, linenum, arg ? arg : "<NONE>"); |
5260325f | 588 | if (*intptr == -1) |
589 | *intptr = (SyslogFacility) value; | |
590 | break; | |
591 | ||
592 | case sLogLevel: | |
593 | intptr = (int *) &options->log_level; | |
704b1659 | 594 | arg = strdelim(&cp); |
089fbbd2 | 595 | value = log_level_number(arg); |
5260325f | 596 | if (value == (LogLevel) - 1) |
597 | fatal("%.200s line %d: unsupported log level '%s'\n", | |
089fbbd2 | 598 | filename, linenum, arg ? arg : "<NONE>"); |
5260325f | 599 | if (*intptr == -1) |
600 | *intptr = (LogLevel) value; | |
601 | break; | |
602 | ||
33de75a3 | 603 | case sAllowTcpForwarding: |
604 | intptr = &options->allow_tcp_forwarding; | |
605 | goto parse_flag; | |
606 | ||
5260325f | 607 | case sAllowUsers: |
704b1659 | 608 | while ((arg = strdelim(&cp)) && *arg != '\0') { |
a8be9f80 | 609 | if (options->num_allow_users >= MAX_ALLOW_USERS) |
610 | fatal("%s line %d: too many allow users.\n", | |
611 | filename, linenum); | |
089fbbd2 | 612 | options->allow_users[options->num_allow_users++] = xstrdup(arg); |
5260325f | 613 | } |
614 | break; | |
615 | ||
616 | case sDenyUsers: | |
704b1659 | 617 | while ((arg = strdelim(&cp)) && *arg != '\0') { |
a8be9f80 | 618 | if (options->num_deny_users >= MAX_DENY_USERS) |
619 | fatal( "%s line %d: too many deny users.\n", | |
620 | filename, linenum); | |
089fbbd2 | 621 | options->deny_users[options->num_deny_users++] = xstrdup(arg); |
5260325f | 622 | } |
623 | break; | |
624 | ||
625 | case sAllowGroups: | |
704b1659 | 626 | while ((arg = strdelim(&cp)) && *arg != '\0') { |
a8be9f80 | 627 | if (options->num_allow_groups >= MAX_ALLOW_GROUPS) |
628 | fatal("%s line %d: too many allow groups.\n", | |
629 | filename, linenum); | |
089fbbd2 | 630 | options->allow_groups[options->num_allow_groups++] = xstrdup(arg); |
5260325f | 631 | } |
632 | break; | |
633 | ||
634 | case sDenyGroups: | |
704b1659 | 635 | while ((arg = strdelim(&cp)) && *arg != '\0') { |
a8be9f80 | 636 | if (options->num_deny_groups >= MAX_DENY_GROUPS) |
637 | fatal("%s line %d: too many deny groups.\n", | |
638 | filename, linenum); | |
089fbbd2 | 639 | options->deny_groups[options->num_deny_groups++] = xstrdup(arg); |
5260325f | 640 | } |
641 | break; | |
642 | ||
a8be9f80 | 643 | case sCiphers: |
704b1659 | 644 | arg = strdelim(&cp); |
089fbbd2 | 645 | if (!arg || *arg == '\0') |
71276795 | 646 | fatal("%s line %d: Missing argument.", filename, linenum); |
089fbbd2 | 647 | if (!ciphers_valid(arg)) |
d0c832f3 | 648 | fatal("%s line %d: Bad SSH2 cipher spec '%s'.", |
089fbbd2 | 649 | filename, linenum, arg ? arg : "<NONE>"); |
a8be9f80 | 650 | if (options->ciphers == NULL) |
089fbbd2 | 651 | options->ciphers = xstrdup(arg); |
a8be9f80 | 652 | break; |
653 | ||
654 | case sProtocol: | |
655 | intptr = &options->protocol; | |
704b1659 | 656 | arg = strdelim(&cp); |
089fbbd2 | 657 | if (!arg || *arg == '\0') |
71276795 | 658 | fatal("%s line %d: Missing argument.", filename, linenum); |
089fbbd2 | 659 | value = proto_spec(arg); |
a8be9f80 | 660 | if (value == SSH_PROTO_UNKNOWN) |
661 | fatal("%s line %d: Bad protocol spec '%s'.", | |
089fbbd2 | 662 | filename, linenum, arg ? arg : "<NONE>"); |
a8be9f80 | 663 | if (*intptr == SSH_PROTO_UNKNOWN) |
664 | *intptr = value; | |
665 | break; | |
666 | ||
38c295d6 | 667 | case sSubsystem: |
668 | if(options->num_subsystems >= MAX_SUBSYSTEMS) { | |
669 | fatal("%s line %d: too many subsystems defined.", | |
670 | filename, linenum); | |
671 | } | |
704b1659 | 672 | arg = strdelim(&cp); |
089fbbd2 | 673 | if (!arg || *arg == '\0') |
38c295d6 | 674 | fatal("%s line %d: Missing subsystem name.", |
675 | filename, linenum); | |
676 | for (i = 0; i < options->num_subsystems; i++) | |
089fbbd2 | 677 | if(strcmp(arg, options->subsystem_name[i]) == 0) |
38c295d6 | 678 | fatal("%s line %d: Subsystem '%s' already defined.", |
089fbbd2 | 679 | filename, linenum, arg); |
680 | options->subsystem_name[options->num_subsystems] = xstrdup(arg); | |
704b1659 | 681 | arg = strdelim(&cp); |
089fbbd2 | 682 | if (!arg || *arg == '\0') |
38c295d6 | 683 | fatal("%s line %d: Missing subsystem command.", |
684 | filename, linenum); | |
089fbbd2 | 685 | options->subsystem_command[options->num_subsystems] = xstrdup(arg); |
38c295d6 | 686 | options->num_subsystems++; |
687 | break; | |
688 | ||
089fbbd2 | 689 | case sMaxStartups: |
c345cf9d | 690 | arg = strdelim(&cp); |
691 | if (!arg || *arg == '\0') | |
692 | fatal("%s line %d: Missing MaxStartups spec.", | |
693 | filename, linenum); | |
694 | if (sscanf(arg, "%d:%d:%d", | |
695 | &options->max_startups_begin, | |
696 | &options->max_startups_rate, | |
697 | &options->max_startups) == 3) { | |
698 | if (options->max_startups_begin > | |
699 | options->max_startups || | |
700 | options->max_startups_rate > 100 || | |
701 | options->max_startups_rate < 1) | |
702 | fatal("%s line %d: Illegal MaxStartups spec.", | |
703 | filename, linenum); | |
704 | break; | |
705 | } | |
089fbbd2 | 706 | intptr = &options->max_startups; |
707 | goto parse_int; | |
708 | ||
eea39c02 | 709 | case sBanner: |
710 | charptr = &options->banner; | |
711 | goto parse_filename; | |
712 | ||
5260325f | 713 | default: |
714 | fprintf(stderr, "%s line %d: Missing handler for opcode %s (%d)\n", | |
089fbbd2 | 715 | filename, linenum, arg, opcode); |
5260325f | 716 | exit(1); |
8efc0c15 | 717 | } |
704b1659 | 718 | if ((arg = strdelim(&cp)) != NULL && *arg != '\0') { |
089fbbd2 | 719 | fprintf(stderr, |
720 | "%s line %d: garbage at end of line; \"%.200s\".\n", | |
721 | filename, linenum, arg); | |
5260325f | 722 | exit(1); |
8efc0c15 | 723 | } |
8efc0c15 | 724 | } |
5260325f | 725 | fclose(f); |
726 | if (bad_options > 0) { | |
727 | fprintf(stderr, "%s: terminating, %d bad configuration options\n", | |
728 | filename, bad_options); | |
729 | exit(1); | |
8efc0c15 | 730 | } |
8efc0c15 | 731 | } |