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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" | |
d11c1288 | 13 | RCSID("$OpenBSD: servconf.c,v 1.74 2001/04/06 22:25:25 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 */ |
d11c1288 | 35 | void add_listen_addr(ServerOptions *options, char *addr, char *port); |
36 | void add_one_listen_addr(ServerOptions *options, char *addr, u_short port); | |
48e671d5 | 37 | |
42f11eb2 | 38 | /* AF_UNSPEC or AF_INET or AF_INET6 */ |
39 | extern int IPv4or6; | |
40 | ||
8efc0c15 | 41 | /* Initializes the server options to their default values. */ |
42 | ||
6ae2364d | 43 | void |
5260325f | 44 | initialize_server_options(ServerOptions *options) |
8efc0c15 | 45 | { |
5260325f | 46 | memset(options, 0, sizeof(*options)); |
48e671d5 | 47 | options->num_ports = 0; |
48 | options->ports_from_cmdline = 0; | |
49 | options->listen_addrs = NULL; | |
fa08c86b | 50 | options->num_host_key_files = 0; |
0fbe8c74 | 51 | options->pid_file = NULL; |
5260325f | 52 | options->server_key_bits = -1; |
53 | options->login_grace_time = -1; | |
54 | options->key_regeneration_time = -1; | |
15853e93 | 55 | options->permit_root_login = PERMIT_NOT_SET; |
5260325f | 56 | options->ignore_rhosts = -1; |
57 | options->ignore_user_known_hosts = -1; | |
58 | options->print_motd = -1; | |
4f4648f9 | 59 | options->print_lastlog = -1; |
5260325f | 60 | options->check_mail = -1; |
61 | options->x11_forwarding = -1; | |
62 | options->x11_display_offset = -1; | |
fa649821 | 63 | options->xauth_location = NULL; |
5260325f | 64 | options->strict_modes = -1; |
65 | options->keepalives = -1; | |
66 | options->log_facility = (SyslogFacility) - 1; | |
67 | options->log_level = (LogLevel) - 1; | |
68 | options->rhosts_authentication = -1; | |
69 | options->rhosts_rsa_authentication = -1; | |
70 | options->rsa_authentication = -1; | |
fa08c86b | 71 | options->pubkey_authentication = -1; |
8efc0c15 | 72 | #ifdef KRB4 |
5260325f | 73 | options->kerberos_authentication = -1; |
74 | options->kerberos_or_local_passwd = -1; | |
75 | options->kerberos_ticket_cleanup = -1; | |
8efc0c15 | 76 | #endif |
77 | #ifdef AFS | |
5260325f | 78 | options->kerberos_tgt_passing = -1; |
79 | options->afs_token_passing = -1; | |
8efc0c15 | 80 | #endif |
5260325f | 81 | options->password_authentication = -1; |
94ec8c6b | 82 | options->kbd_interactive_authentication = -1; |
d464095c | 83 | options->challenge_reponse_authentication = -1; |
5260325f | 84 | options->permit_empty_passwd = -1; |
85 | options->use_login = -1; | |
33de75a3 | 86 | options->allow_tcp_forwarding = -1; |
5260325f | 87 | options->num_allow_users = 0; |
88 | options->num_deny_users = 0; | |
89 | options->num_allow_groups = 0; | |
90 | options->num_deny_groups = 0; | |
a8be9f80 | 91 | options->ciphers = NULL; |
b2552997 | 92 | options->macs = NULL; |
a8be9f80 | 93 | options->protocol = SSH_PROTO_UNKNOWN; |
1d1ffb87 | 94 | options->gateway_ports = -1; |
38c295d6 | 95 | options->num_subsystems = 0; |
c345cf9d | 96 | options->max_startups_begin = -1; |
97 | options->max_startups_rate = -1; | |
089fbbd2 | 98 | options->max_startups = -1; |
eea39c02 | 99 | options->banner = NULL; |
61e96248 | 100 | options->reverse_mapping_check = -1; |
8efc0c15 | 101 | } |
102 | ||
6ae2364d | 103 | void |
5260325f | 104 | fill_default_server_options(ServerOptions *options) |
8efc0c15 | 105 | { |
fa08c86b | 106 | if (options->protocol == SSH_PROTO_UNKNOWN) |
107 | options->protocol = SSH_PROTO_1|SSH_PROTO_2; | |
108 | if (options->num_host_key_files == 0) { | |
109 | /* fill default hostkeys for protocols */ | |
110 | if (options->protocol & SSH_PROTO_1) | |
42f11eb2 | 111 | options->host_key_files[options->num_host_key_files++] = _PATH_HOST_KEY_FILE; |
fa08c86b | 112 | if (options->protocol & SSH_PROTO_2) |
42f11eb2 | 113 | options->host_key_files[options->num_host_key_files++] = _PATH_HOST_DSA_KEY_FILE; |
fa08c86b | 114 | } |
48e671d5 | 115 | if (options->num_ports == 0) |
116 | options->ports[options->num_ports++] = SSH_DEFAULT_PORT; | |
117 | if (options->listen_addrs == NULL) | |
d11c1288 | 118 | add_listen_addr(options, NULL, NULL); |
0fbe8c74 | 119 | if (options->pid_file == NULL) |
42f11eb2 | 120 | options->pid_file = _PATH_SSH_DAEMON_PID_FILE; |
5260325f | 121 | if (options->server_key_bits == -1) |
122 | options->server_key_bits = 768; | |
123 | if (options->login_grace_time == -1) | |
124 | options->login_grace_time = 600; | |
125 | if (options->key_regeneration_time == -1) | |
126 | options->key_regeneration_time = 3600; | |
15853e93 | 127 | if (options->permit_root_login == PERMIT_NOT_SET) |
128 | options->permit_root_login = PERMIT_YES; | |
5260325f | 129 | if (options->ignore_rhosts == -1) |
c8d54615 | 130 | options->ignore_rhosts = 1; |
5260325f | 131 | if (options->ignore_user_known_hosts == -1) |
132 | options->ignore_user_known_hosts = 0; | |
133 | if (options->check_mail == -1) | |
134 | options->check_mail = 0; | |
135 | if (options->print_motd == -1) | |
136 | options->print_motd = 1; | |
4f4648f9 | 137 | if (options->print_lastlog == -1) |
138 | options->print_lastlog = 1; | |
5260325f | 139 | if (options->x11_forwarding == -1) |
c8d54615 | 140 | options->x11_forwarding = 0; |
5260325f | 141 | if (options->x11_display_offset == -1) |
c8d54615 | 142 | options->x11_display_offset = 10; |
fa649821 | 143 | #ifdef XAUTH_PATH |
144 | if (options->xauth_location == NULL) | |
145 | options->xauth_location = XAUTH_PATH; | |
146 | #endif /* XAUTH_PATH */ | |
5260325f | 147 | if (options->strict_modes == -1) |
148 | options->strict_modes = 1; | |
149 | if (options->keepalives == -1) | |
150 | options->keepalives = 1; | |
151 | if (options->log_facility == (SyslogFacility) (-1)) | |
152 | options->log_facility = SYSLOG_FACILITY_AUTH; | |
153 | if (options->log_level == (LogLevel) (-1)) | |
59c97189 | 154 | options->log_level = SYSLOG_LEVEL_INFO; |
5260325f | 155 | if (options->rhosts_authentication == -1) |
156 | options->rhosts_authentication = 0; | |
157 | if (options->rhosts_rsa_authentication == -1) | |
c8d54615 | 158 | options->rhosts_rsa_authentication = 0; |
5260325f | 159 | if (options->rsa_authentication == -1) |
160 | options->rsa_authentication = 1; | |
fa08c86b | 161 | if (options->pubkey_authentication == -1) |
162 | options->pubkey_authentication = 1; | |
8efc0c15 | 163 | #ifdef KRB4 |
5260325f | 164 | if (options->kerberos_authentication == -1) |
165 | options->kerberos_authentication = (access(KEYFILE, R_OK) == 0); | |
166 | if (options->kerberos_or_local_passwd == -1) | |
167 | options->kerberos_or_local_passwd = 1; | |
168 | if (options->kerberos_ticket_cleanup == -1) | |
169 | options->kerberos_ticket_cleanup = 1; | |
8efc0c15 | 170 | #endif /* KRB4 */ |
171 | #ifdef AFS | |
5260325f | 172 | if (options->kerberos_tgt_passing == -1) |
173 | options->kerberos_tgt_passing = 0; | |
174 | if (options->afs_token_passing == -1) | |
175 | options->afs_token_passing = k_hasafs(); | |
8efc0c15 | 176 | #endif /* AFS */ |
5260325f | 177 | if (options->password_authentication == -1) |
178 | options->password_authentication = 1; | |
94ec8c6b | 179 | if (options->kbd_interactive_authentication == -1) |
180 | options->kbd_interactive_authentication = 0; | |
d464095c | 181 | if (options->challenge_reponse_authentication == -1) |
182 | options->challenge_reponse_authentication = 1; | |
5260325f | 183 | if (options->permit_empty_passwd == -1) |
c8d54615 | 184 | options->permit_empty_passwd = 0; |
5260325f | 185 | if (options->use_login == -1) |
186 | options->use_login = 0; | |
33de75a3 | 187 | if (options->allow_tcp_forwarding == -1) |
188 | options->allow_tcp_forwarding = 1; | |
1d1ffb87 | 189 | if (options->gateway_ports == -1) |
190 | options->gateway_ports = 0; | |
089fbbd2 | 191 | if (options->max_startups == -1) |
192 | options->max_startups = 10; | |
c345cf9d | 193 | if (options->max_startups_rate == -1) |
194 | options->max_startups_rate = 100; /* 100% */ | |
195 | if (options->max_startups_begin == -1) | |
196 | options->max_startups_begin = options->max_startups; | |
61e96248 | 197 | if (options->reverse_mapping_check == -1) |
198 | options->reverse_mapping_check = 0; | |
8efc0c15 | 199 | } |
200 | ||
8efc0c15 | 201 | /* Keyword tokens. */ |
5260325f | 202 | typedef enum { |
203 | sBadOption, /* == unknown option */ | |
204 | sPort, sHostKeyFile, sServerKeyBits, sLoginGraceTime, sKeyRegenerationTime, | |
205 | sPermitRootLogin, sLogFacility, sLogLevel, | |
206 | sRhostsAuthentication, sRhostsRSAAuthentication, sRSAAuthentication, | |
8efc0c15 | 207 | #ifdef KRB4 |
5260325f | 208 | sKerberosAuthentication, sKerberosOrLocalPasswd, sKerberosTicketCleanup, |
8efc0c15 | 209 | #endif |
210 | #ifdef AFS | |
5260325f | 211 | sKerberosTgtPassing, sAFSTokenPassing, |
8efc0c15 | 212 | #endif |
d464095c | 213 | sChallengeResponseAuthentication, |
94ec8c6b | 214 | sPasswordAuthentication, sKbdInteractiveAuthentication, sListenAddress, |
4f4648f9 | 215 | sPrintMotd, sPrintLastLog, sIgnoreRhosts, |
216 | sX11Forwarding, sX11DisplayOffset, | |
9c81df4c | 217 | sStrictModes, sEmptyPasswd, sKeepAlives, sCheckMail, |
33de75a3 | 218 | sUseLogin, sAllowTcpForwarding, |
219 | sAllowUsers, sDenyUsers, sAllowGroups, sDenyGroups, | |
b2552997 | 220 | sIgnoreUserKnownHosts, sCiphers, sMacs, sProtocol, sPidFile, |
fa08c86b | 221 | sGatewayPorts, sPubkeyAuthentication, sXAuthLocation, sSubsystem, sMaxStartups, |
61e96248 | 222 | sBanner, sReverseMappingCheck |
8efc0c15 | 223 | } ServerOpCodes; |
224 | ||
225 | /* Textual representation of the tokens. */ | |
5260325f | 226 | static struct { |
227 | const char *name; | |
228 | ServerOpCodes opcode; | |
229 | } keywords[] = { | |
230 | { "port", sPort }, | |
231 | { "hostkey", sHostKeyFile }, | |
fa08c86b | 232 | { "hostdsakey", sHostKeyFile }, /* alias */ |
2b87da3b | 233 | { "pidfile", sPidFile }, |
5260325f | 234 | { "serverkeybits", sServerKeyBits }, |
235 | { "logingracetime", sLoginGraceTime }, | |
236 | { "keyregenerationinterval", sKeyRegenerationTime }, | |
237 | { "permitrootlogin", sPermitRootLogin }, | |
238 | { "syslogfacility", sLogFacility }, | |
239 | { "loglevel", sLogLevel }, | |
240 | { "rhostsauthentication", sRhostsAuthentication }, | |
241 | { "rhostsrsaauthentication", sRhostsRSAAuthentication }, | |
242 | { "rsaauthentication", sRSAAuthentication }, | |
fa08c86b | 243 | { "pubkeyauthentication", sPubkeyAuthentication }, |
244 | { "dsaauthentication", sPubkeyAuthentication }, /* alias */ | |
8efc0c15 | 245 | #ifdef KRB4 |
5260325f | 246 | { "kerberosauthentication", sKerberosAuthentication }, |
247 | { "kerberosorlocalpasswd", sKerberosOrLocalPasswd }, | |
248 | { "kerberosticketcleanup", sKerberosTicketCleanup }, | |
8efc0c15 | 249 | #endif |
250 | #ifdef AFS | |
5260325f | 251 | { "kerberostgtpassing", sKerberosTgtPassing }, |
252 | { "afstokenpassing", sAFSTokenPassing }, | |
8efc0c15 | 253 | #endif |
5260325f | 254 | { "passwordauthentication", sPasswordAuthentication }, |
94ec8c6b | 255 | { "kbdinteractiveauthentication", sKbdInteractiveAuthentication }, |
d464095c | 256 | { "challengeresponseauthentication", sChallengeResponseAuthentication }, |
257 | { "skeyauthentication", sChallengeResponseAuthentication }, /* alias */ | |
5260325f | 258 | { "checkmail", sCheckMail }, |
259 | { "listenaddress", sListenAddress }, | |
260 | { "printmotd", sPrintMotd }, | |
4f4648f9 | 261 | { "printlastlog", sPrintLastLog }, |
5260325f | 262 | { "ignorerhosts", sIgnoreRhosts }, |
263 | { "ignoreuserknownhosts", sIgnoreUserKnownHosts }, | |
264 | { "x11forwarding", sX11Forwarding }, | |
265 | { "x11displayoffset", sX11DisplayOffset }, | |
fa649821 | 266 | { "xauthlocation", sXAuthLocation }, |
5260325f | 267 | { "strictmodes", sStrictModes }, |
268 | { "permitemptypasswords", sEmptyPasswd }, | |
269 | { "uselogin", sUseLogin }, | |
5260325f | 270 | { "keepalive", sKeepAlives }, |
33de75a3 | 271 | { "allowtcpforwarding", sAllowTcpForwarding }, |
5260325f | 272 | { "allowusers", sAllowUsers }, |
273 | { "denyusers", sDenyUsers }, | |
274 | { "allowgroups", sAllowGroups }, | |
275 | { "denygroups", sDenyGroups }, | |
a8be9f80 | 276 | { "ciphers", sCiphers }, |
b2552997 | 277 | { "macs", sMacs }, |
a8be9f80 | 278 | { "protocol", sProtocol }, |
1d1ffb87 | 279 | { "gatewayports", sGatewayPorts }, |
38c295d6 | 280 | { "subsystem", sSubsystem }, |
089fbbd2 | 281 | { "maxstartups", sMaxStartups }, |
eea39c02 | 282 | { "banner", sBanner }, |
61e96248 | 283 | { "reversemappingcheck", sReverseMappingCheck }, |
5260325f | 284 | { NULL, 0 } |
8efc0c15 | 285 | }; |
286 | ||
aa3378df | 287 | /* |
6be9a5e8 | 288 | * Returns the number of the token pointed to by cp or sBadOption. |
aa3378df | 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 |
d11c1288 | 310 | add_listen_addr(ServerOptions *options, char *addr, char *port) |
48e671d5 | 311 | { |
48e671d5 | 312 | int i; |
313 | ||
314 | if (options->num_ports == 0) | |
315 | options->ports[options->num_ports++] = SSH_DEFAULT_PORT; | |
d11c1288 | 316 | if (port == NULL) |
317 | for (i = 0; i < options->num_ports; i++) | |
318 | add_one_listen_addr(options, addr, options->ports[i]); | |
319 | else | |
320 | add_one_listen_addr(options, addr, atoi(port)); | |
321 | } | |
322 | ||
323 | void | |
324 | add_one_listen_addr(ServerOptions *options, char *addr, u_short port) | |
325 | { | |
326 | struct addrinfo hints, *ai, *aitop; | |
327 | char strport[NI_MAXSERV]; | |
328 | int gaierr; | |
329 | ||
330 | memset(&hints, 0, sizeof(hints)); | |
331 | hints.ai_family = IPv4or6; | |
332 | hints.ai_socktype = SOCK_STREAM; | |
333 | hints.ai_flags = (addr == NULL) ? AI_PASSIVE : 0; | |
334 | snprintf(strport, sizeof strport, "%d", port); | |
335 | if ((gaierr = getaddrinfo(addr, strport, &hints, &aitop)) != 0) | |
336 | fatal("bad addr or host: %s (%s)", | |
337 | addr ? addr : "<NULL>", | |
338 | gai_strerror(gaierr)); | |
339 | for (ai = aitop; ai->ai_next; ai = ai->ai_next) | |
340 | ; | |
341 | ai->ai_next = options->listen_addrs; | |
342 | options->listen_addrs = aitop; | |
48e671d5 | 343 | } |
344 | ||
8efc0c15 | 345 | /* Reads the server configuration file. */ |
346 | ||
6ae2364d | 347 | void |
5260325f | 348 | read_server_config(ServerOptions *options, const char *filename) |
8efc0c15 | 349 | { |
5260325f | 350 | FILE *f; |
351 | char line[1024]; | |
d11c1288 | 352 | char *cp, **charptr, *arg, *p; |
5260325f | 353 | int linenum, *intptr, value; |
354 | int bad_options = 0; | |
355 | ServerOpCodes opcode; | |
38c295d6 | 356 | int i; |
5260325f | 357 | |
358 | f = fopen(filename, "r"); | |
359 | if (!f) { | |
360 | perror(filename); | |
8efc0c15 | 361 | exit(1); |
5260325f | 362 | } |
363 | linenum = 0; | |
364 | while (fgets(line, sizeof(line), f)) { | |
365 | linenum++; | |
704b1659 | 366 | cp = line; |
367 | arg = strdelim(&cp); | |
368 | /* Ignore leading whitespace */ | |
369 | if (*arg == '\0') | |
370 | arg = strdelim(&cp); | |
42f11eb2 | 371 | if (!arg || !*arg || *arg == '#') |
5260325f | 372 | continue; |
fa08c86b | 373 | intptr = NULL; |
374 | charptr = NULL; | |
089fbbd2 | 375 | opcode = parse_token(arg, filename, linenum); |
5260325f | 376 | switch (opcode) { |
377 | case sBadOption: | |
378 | bad_options++; | |
379 | continue; | |
380 | case sPort: | |
48e671d5 | 381 | /* ignore ports from configfile if cmdline specifies ports */ |
382 | if (options->ports_from_cmdline) | |
383 | continue; | |
384 | if (options->listen_addrs != NULL) | |
385 | fatal("%s line %d: ports must be specified before " | |
386 | "ListenAdress.\n", filename, linenum); | |
387 | if (options->num_ports >= MAX_PORTS) | |
54b974dc | 388 | fatal("%s line %d: too many ports.", |
6ae2364d | 389 | filename, linenum); |
704b1659 | 390 | arg = strdelim(&cp); |
089fbbd2 | 391 | if (!arg || *arg == '\0') |
54b974dc | 392 | fatal("%s line %d: missing port number.", |
48e671d5 | 393 | filename, linenum); |
089fbbd2 | 394 | options->ports[options->num_ports++] = atoi(arg); |
48e671d5 | 395 | break; |
396 | ||
397 | case sServerKeyBits: | |
398 | intptr = &options->server_key_bits; | |
5260325f | 399 | parse_int: |
704b1659 | 400 | arg = strdelim(&cp); |
089fbbd2 | 401 | if (!arg || *arg == '\0') { |
5260325f | 402 | fprintf(stderr, "%s line %d: missing integer value.\n", |
403 | filename, linenum); | |
404 | exit(1); | |
405 | } | |
089fbbd2 | 406 | value = atoi(arg); |
5260325f | 407 | if (*intptr == -1) |
408 | *intptr = value; | |
409 | break; | |
410 | ||
5260325f | 411 | case sLoginGraceTime: |
412 | intptr = &options->login_grace_time; | |
413 | goto parse_int; | |
414 | ||
415 | case sKeyRegenerationTime: | |
416 | intptr = &options->key_regeneration_time; | |
417 | goto parse_int; | |
418 | ||
419 | case sListenAddress: | |
704b1659 | 420 | arg = strdelim(&cp); |
d11c1288 | 421 | if (!arg || *arg == '\0' || strncmp(arg, "[]", 2) == 0) |
54b974dc | 422 | fatal("%s line %d: missing inet addr.", |
48e671d5 | 423 | filename, linenum); |
d11c1288 | 424 | if (*arg == '[') { |
425 | if ((p = strchr(arg, ']')) == NULL) | |
426 | fatal("%s line %d: bad ipv6 inet addr usage.", | |
427 | filename, linenum); | |
428 | arg++; | |
429 | memmove(p, p+1, strlen(p+1)+1); | |
430 | } else if (((p = strchr(arg, ':')) == NULL) || | |
431 | (strchr(p+1, ':') != NULL)) { | |
432 | add_listen_addr(options, arg, NULL); | |
433 | break; | |
434 | } | |
435 | if (*p == ':') { | |
436 | p++; | |
437 | if (*p == '\0') | |
438 | fatal("%s line %d: bad inet addr:port usage.", | |
439 | filename, linenum); | |
440 | else { | |
441 | *(p-1) = '\0'; | |
442 | add_listen_addr(options, arg, p); | |
443 | } | |
444 | } else if (*p == '\0') | |
445 | add_listen_addr(options, arg, NULL); | |
446 | else | |
447 | fatal("%s line %d: bad inet addr usage.", | |
448 | filename, linenum); | |
5260325f | 449 | break; |
450 | ||
451 | case sHostKeyFile: | |
fa08c86b | 452 | intptr = &options->num_host_key_files; |
453 | if (*intptr >= MAX_HOSTKEYS) { | |
0c126dc9 | 454 | fprintf(stderr, |
455 | "%s line %d: too many host keys specified (max %d).\n", | |
fa08c86b | 456 | filename, linenum, MAX_HOSTKEYS); |
457 | exit(1); | |
458 | } | |
459 | charptr = &options->host_key_files[*intptr]; | |
fa649821 | 460 | parse_filename: |
704b1659 | 461 | arg = strdelim(&cp); |
089fbbd2 | 462 | if (!arg || *arg == '\0') { |
5260325f | 463 | fprintf(stderr, "%s line %d: missing file name.\n", |
0fbe8c74 | 464 | filename, linenum); |
465 | exit(1); | |
466 | } | |
fa08c86b | 467 | if (*charptr == NULL) { |
089fbbd2 | 468 | *charptr = tilde_expand_filename(arg, getuid()); |
fa08c86b | 469 | /* increase optional counter */ |
470 | if (intptr != NULL) | |
471 | *intptr = *intptr + 1; | |
472 | } | |
0fbe8c74 | 473 | break; |
474 | ||
475 | case sPidFile: | |
476 | charptr = &options->pid_file; | |
fa649821 | 477 | goto parse_filename; |
5260325f | 478 | |
5260325f | 479 | case sPermitRootLogin: |
480 | intptr = &options->permit_root_login; | |
704b1659 | 481 | arg = strdelim(&cp); |
089fbbd2 | 482 | if (!arg || *arg == '\0') { |
7c8f2a26 | 483 | fprintf(stderr, "%s line %d: missing yes/" |
484 | "without-password/forced-commands-only/no " | |
485 | "argument.\n", filename, linenum); | |
5260325f | 486 | exit(1); |
487 | } | |
089fbbd2 | 488 | if (strcmp(arg, "without-password") == 0) |
15853e93 | 489 | value = PERMIT_NO_PASSWD; |
490 | else if (strcmp(arg, "forced-commands-only") == 0) | |
491 | value = PERMIT_FORCED_ONLY; | |
089fbbd2 | 492 | else if (strcmp(arg, "yes") == 0) |
15853e93 | 493 | value = PERMIT_YES; |
089fbbd2 | 494 | else if (strcmp(arg, "no") == 0) |
15853e93 | 495 | value = PERMIT_NO; |
5260325f | 496 | else { |
15853e93 | 497 | fprintf(stderr, "%s line %d: Bad yes/" |
498 | "without-password/forced-commands-only/no " | |
499 | "argument: %s\n", filename, linenum, arg); | |
5260325f | 500 | exit(1); |
501 | } | |
502 | if (*intptr == -1) | |
503 | *intptr = value; | |
504 | break; | |
505 | ||
506 | case sIgnoreRhosts: | |
507 | intptr = &options->ignore_rhosts; | |
508 | parse_flag: | |
704b1659 | 509 | arg = strdelim(&cp); |
089fbbd2 | 510 | if (!arg || *arg == '\0') { |
5260325f | 511 | fprintf(stderr, "%s line %d: missing yes/no argument.\n", |
512 | filename, linenum); | |
513 | exit(1); | |
514 | } | |
089fbbd2 | 515 | if (strcmp(arg, "yes") == 0) |
5260325f | 516 | value = 1; |
089fbbd2 | 517 | else if (strcmp(arg, "no") == 0) |
5260325f | 518 | value = 0; |
519 | else { | |
520 | fprintf(stderr, "%s line %d: Bad yes/no argument: %s\n", | |
089fbbd2 | 521 | filename, linenum, arg); |
5260325f | 522 | exit(1); |
523 | } | |
524 | if (*intptr == -1) | |
525 | *intptr = value; | |
526 | break; | |
527 | ||
528 | case sIgnoreUserKnownHosts: | |
529 | intptr = &options->ignore_user_known_hosts; | |
c8d54615 | 530 | goto parse_flag; |
5260325f | 531 | |
532 | case sRhostsAuthentication: | |
533 | intptr = &options->rhosts_authentication; | |
534 | goto parse_flag; | |
535 | ||
536 | case sRhostsRSAAuthentication: | |
537 | intptr = &options->rhosts_rsa_authentication; | |
538 | goto parse_flag; | |
539 | ||
540 | case sRSAAuthentication: | |
541 | intptr = &options->rsa_authentication; | |
542 | goto parse_flag; | |
543 | ||
fa08c86b | 544 | case sPubkeyAuthentication: |
545 | intptr = &options->pubkey_authentication; | |
1d1ffb87 | 546 | goto parse_flag; |
547 | ||
8efc0c15 | 548 | #ifdef KRB4 |
5260325f | 549 | case sKerberosAuthentication: |
550 | intptr = &options->kerberos_authentication; | |
551 | goto parse_flag; | |
552 | ||
553 | case sKerberosOrLocalPasswd: | |
554 | intptr = &options->kerberos_or_local_passwd; | |
555 | goto parse_flag; | |
556 | ||
557 | case sKerberosTicketCleanup: | |
558 | intptr = &options->kerberos_ticket_cleanup; | |
559 | goto parse_flag; | |
8efc0c15 | 560 | #endif |
5260325f | 561 | |
8efc0c15 | 562 | #ifdef AFS |
5260325f | 563 | case sKerberosTgtPassing: |
564 | intptr = &options->kerberos_tgt_passing; | |
565 | goto parse_flag; | |
8efc0c15 | 566 | |
5260325f | 567 | case sAFSTokenPassing: |
568 | intptr = &options->afs_token_passing; | |
569 | goto parse_flag; | |
8efc0c15 | 570 | #endif |
571 | ||
5260325f | 572 | case sPasswordAuthentication: |
573 | intptr = &options->password_authentication; | |
574 | goto parse_flag; | |
8efc0c15 | 575 | |
94ec8c6b | 576 | case sKbdInteractiveAuthentication: |
577 | intptr = &options->kbd_interactive_authentication; | |
578 | goto parse_flag; | |
579 | ||
5260325f | 580 | case sCheckMail: |
581 | intptr = &options->check_mail; | |
582 | goto parse_flag; | |
8efc0c15 | 583 | |
d464095c | 584 | case sChallengeResponseAuthentication: |
585 | intptr = &options->challenge_reponse_authentication; | |
5260325f | 586 | goto parse_flag; |
8efc0c15 | 587 | |
5260325f | 588 | case sPrintMotd: |
589 | intptr = &options->print_motd; | |
590 | goto parse_flag; | |
591 | ||
4f4648f9 | 592 | case sPrintLastLog: |
593 | intptr = &options->print_lastlog; | |
594 | goto parse_flag; | |
595 | ||
5260325f | 596 | case sX11Forwarding: |
597 | intptr = &options->x11_forwarding; | |
598 | goto parse_flag; | |
599 | ||
600 | case sX11DisplayOffset: | |
601 | intptr = &options->x11_display_offset; | |
602 | goto parse_int; | |
603 | ||
fa649821 | 604 | case sXAuthLocation: |
605 | charptr = &options->xauth_location; | |
606 | goto parse_filename; | |
2b87da3b | 607 | |
5260325f | 608 | case sStrictModes: |
609 | intptr = &options->strict_modes; | |
610 | goto parse_flag; | |
611 | ||
612 | case sKeepAlives: | |
613 | intptr = &options->keepalives; | |
614 | goto parse_flag; | |
615 | ||
616 | case sEmptyPasswd: | |
617 | intptr = &options->permit_empty_passwd; | |
618 | goto parse_flag; | |
619 | ||
620 | case sUseLogin: | |
621 | intptr = &options->use_login; | |
622 | goto parse_flag; | |
623 | ||
1d1ffb87 | 624 | case sGatewayPorts: |
625 | intptr = &options->gateway_ports; | |
626 | goto parse_flag; | |
627 | ||
61e96248 | 628 | case sReverseMappingCheck: |
629 | intptr = &options->reverse_mapping_check; | |
630 | goto parse_flag; | |
631 | ||
5260325f | 632 | case sLogFacility: |
633 | intptr = (int *) &options->log_facility; | |
704b1659 | 634 | arg = strdelim(&cp); |
089fbbd2 | 635 | value = log_facility_number(arg); |
5260325f | 636 | if (value == (SyslogFacility) - 1) |
54b974dc | 637 | fatal("%.200s line %d: unsupported log facility '%s'", |
089fbbd2 | 638 | filename, linenum, arg ? arg : "<NONE>"); |
5260325f | 639 | if (*intptr == -1) |
640 | *intptr = (SyslogFacility) value; | |
641 | break; | |
642 | ||
643 | case sLogLevel: | |
644 | intptr = (int *) &options->log_level; | |
704b1659 | 645 | arg = strdelim(&cp); |
089fbbd2 | 646 | value = log_level_number(arg); |
5260325f | 647 | if (value == (LogLevel) - 1) |
54b974dc | 648 | fatal("%.200s line %d: unsupported log level '%s'", |
089fbbd2 | 649 | filename, linenum, arg ? arg : "<NONE>"); |
5260325f | 650 | if (*intptr == -1) |
651 | *intptr = (LogLevel) value; | |
652 | break; | |
653 | ||
33de75a3 | 654 | case sAllowTcpForwarding: |
655 | intptr = &options->allow_tcp_forwarding; | |
656 | goto parse_flag; | |
657 | ||
5260325f | 658 | case sAllowUsers: |
704b1659 | 659 | while ((arg = strdelim(&cp)) && *arg != '\0') { |
a8be9f80 | 660 | if (options->num_allow_users >= MAX_ALLOW_USERS) |
54b974dc | 661 | fatal("%s line %d: too many allow users.", |
a8be9f80 | 662 | filename, linenum); |
089fbbd2 | 663 | options->allow_users[options->num_allow_users++] = xstrdup(arg); |
5260325f | 664 | } |
665 | break; | |
666 | ||
667 | case sDenyUsers: | |
704b1659 | 668 | while ((arg = strdelim(&cp)) && *arg != '\0') { |
a8be9f80 | 669 | if (options->num_deny_users >= MAX_DENY_USERS) |
54b974dc | 670 | fatal( "%s line %d: too many deny users.", |
a8be9f80 | 671 | filename, linenum); |
089fbbd2 | 672 | options->deny_users[options->num_deny_users++] = xstrdup(arg); |
5260325f | 673 | } |
674 | break; | |
675 | ||
676 | case sAllowGroups: | |
704b1659 | 677 | while ((arg = strdelim(&cp)) && *arg != '\0') { |
a8be9f80 | 678 | if (options->num_allow_groups >= MAX_ALLOW_GROUPS) |
54b974dc | 679 | fatal("%s line %d: too many allow groups.", |
a8be9f80 | 680 | filename, linenum); |
089fbbd2 | 681 | options->allow_groups[options->num_allow_groups++] = xstrdup(arg); |
5260325f | 682 | } |
683 | break; | |
684 | ||
685 | case sDenyGroups: | |
704b1659 | 686 | while ((arg = strdelim(&cp)) && *arg != '\0') { |
a8be9f80 | 687 | if (options->num_deny_groups >= MAX_DENY_GROUPS) |
54b974dc | 688 | fatal("%s line %d: too many deny groups.", |
a8be9f80 | 689 | filename, linenum); |
089fbbd2 | 690 | options->deny_groups[options->num_deny_groups++] = xstrdup(arg); |
5260325f | 691 | } |
692 | break; | |
693 | ||
a8be9f80 | 694 | case sCiphers: |
704b1659 | 695 | arg = strdelim(&cp); |
089fbbd2 | 696 | if (!arg || *arg == '\0') |
71276795 | 697 | fatal("%s line %d: Missing argument.", filename, linenum); |
089fbbd2 | 698 | if (!ciphers_valid(arg)) |
d0c832f3 | 699 | fatal("%s line %d: Bad SSH2 cipher spec '%s'.", |
089fbbd2 | 700 | filename, linenum, arg ? arg : "<NONE>"); |
a8be9f80 | 701 | if (options->ciphers == NULL) |
089fbbd2 | 702 | options->ciphers = xstrdup(arg); |
a8be9f80 | 703 | break; |
704 | ||
b2552997 | 705 | case sMacs: |
706 | arg = strdelim(&cp); | |
707 | if (!arg || *arg == '\0') | |
708 | fatal("%s line %d: Missing argument.", filename, linenum); | |
709 | if (!mac_valid(arg)) | |
710 | fatal("%s line %d: Bad SSH2 mac spec '%s'.", | |
711 | filename, linenum, arg ? arg : "<NONE>"); | |
712 | if (options->macs == NULL) | |
713 | options->macs = xstrdup(arg); | |
714 | break; | |
715 | ||
a8be9f80 | 716 | case sProtocol: |
717 | intptr = &options->protocol; | |
704b1659 | 718 | arg = strdelim(&cp); |
089fbbd2 | 719 | if (!arg || *arg == '\0') |
71276795 | 720 | fatal("%s line %d: Missing argument.", filename, linenum); |
089fbbd2 | 721 | value = proto_spec(arg); |
a8be9f80 | 722 | if (value == SSH_PROTO_UNKNOWN) |
723 | fatal("%s line %d: Bad protocol spec '%s'.", | |
089fbbd2 | 724 | filename, linenum, arg ? arg : "<NONE>"); |
a8be9f80 | 725 | if (*intptr == SSH_PROTO_UNKNOWN) |
726 | *intptr = value; | |
727 | break; | |
728 | ||
38c295d6 | 729 | case sSubsystem: |
730 | if(options->num_subsystems >= MAX_SUBSYSTEMS) { | |
731 | fatal("%s line %d: too many subsystems defined.", | |
732 | filename, linenum); | |
733 | } | |
704b1659 | 734 | arg = strdelim(&cp); |
089fbbd2 | 735 | if (!arg || *arg == '\0') |
38c295d6 | 736 | fatal("%s line %d: Missing subsystem name.", |
737 | filename, linenum); | |
738 | for (i = 0; i < options->num_subsystems; i++) | |
089fbbd2 | 739 | if(strcmp(arg, options->subsystem_name[i]) == 0) |
38c295d6 | 740 | fatal("%s line %d: Subsystem '%s' already defined.", |
089fbbd2 | 741 | filename, linenum, arg); |
742 | options->subsystem_name[options->num_subsystems] = xstrdup(arg); | |
704b1659 | 743 | arg = strdelim(&cp); |
089fbbd2 | 744 | if (!arg || *arg == '\0') |
38c295d6 | 745 | fatal("%s line %d: Missing subsystem command.", |
746 | filename, linenum); | |
089fbbd2 | 747 | options->subsystem_command[options->num_subsystems] = xstrdup(arg); |
38c295d6 | 748 | options->num_subsystems++; |
749 | break; | |
750 | ||
089fbbd2 | 751 | case sMaxStartups: |
c345cf9d | 752 | arg = strdelim(&cp); |
753 | if (!arg || *arg == '\0') | |
754 | fatal("%s line %d: Missing MaxStartups spec.", | |
755 | filename, linenum); | |
756 | if (sscanf(arg, "%d:%d:%d", | |
757 | &options->max_startups_begin, | |
758 | &options->max_startups_rate, | |
759 | &options->max_startups) == 3) { | |
760 | if (options->max_startups_begin > | |
761 | options->max_startups || | |
762 | options->max_startups_rate > 100 || | |
763 | options->max_startups_rate < 1) | |
764 | fatal("%s line %d: Illegal MaxStartups spec.", | |
765 | filename, linenum); | |
766 | break; | |
767 | } | |
089fbbd2 | 768 | intptr = &options->max_startups; |
769 | goto parse_int; | |
770 | ||
eea39c02 | 771 | case sBanner: |
772 | charptr = &options->banner; | |
773 | goto parse_filename; | |
2b87da3b | 774 | |
5260325f | 775 | default: |
776 | fprintf(stderr, "%s line %d: Missing handler for opcode %s (%d)\n", | |
089fbbd2 | 777 | filename, linenum, arg, opcode); |
5260325f | 778 | exit(1); |
8efc0c15 | 779 | } |
704b1659 | 780 | if ((arg = strdelim(&cp)) != NULL && *arg != '\0') { |
2b87da3b | 781 | fprintf(stderr, |
089fbbd2 | 782 | "%s line %d: garbage at end of line; \"%.200s\".\n", |
783 | filename, linenum, arg); | |
5260325f | 784 | exit(1); |
8efc0c15 | 785 | } |
8efc0c15 | 786 | } |
5260325f | 787 | fclose(f); |
788 | if (bad_options > 0) { | |
789 | fprintf(stderr, "%s: terminating, %d bad configuration options\n", | |
790 | filename, bad_options); | |
791 | exit(1); | |
8efc0c15 | 792 | } |
8efc0c15 | 793 | } |