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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" | |
2d2a2c65 | 13 | RCSID("$OpenBSD: servconf.c,v 1.76 2001/04/12 20:09:37 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 | |
2d2a2c65 | 34 | void add_listen_addr(ServerOptions *options, char *addr, u_short port); |
d11c1288 | 35 | void add_one_listen_addr(ServerOptions *options, char *addr, u_short port); |
48e671d5 | 36 | |
42f11eb2 | 37 | /* AF_UNSPEC or AF_INET or AF_INET6 */ |
38 | extern int IPv4or6; | |
39 | ||
8efc0c15 | 40 | /* Initializes the server options to their default values. */ |
41 | ||
6ae2364d | 42 | void |
5260325f | 43 | initialize_server_options(ServerOptions *options) |
8efc0c15 | 44 | { |
5260325f | 45 | memset(options, 0, sizeof(*options)); |
48e671d5 | 46 | options->num_ports = 0; |
47 | options->ports_from_cmdline = 0; | |
48 | options->listen_addrs = NULL; | |
fa08c86b | 49 | options->num_host_key_files = 0; |
0fbe8c74 | 50 | options->pid_file = NULL; |
5260325f | 51 | options->server_key_bits = -1; |
52 | options->login_grace_time = -1; | |
53 | options->key_regeneration_time = -1; | |
15853e93 | 54 | options->permit_root_login = PERMIT_NOT_SET; |
5260325f | 55 | options->ignore_rhosts = -1; |
56 | options->ignore_user_known_hosts = -1; | |
57 | options->print_motd = -1; | |
4f4648f9 | 58 | options->print_lastlog = -1; |
5260325f | 59 | options->check_mail = -1; |
60 | options->x11_forwarding = -1; | |
61 | options->x11_display_offset = -1; | |
fa649821 | 62 | options->xauth_location = NULL; |
5260325f | 63 | options->strict_modes = -1; |
64 | options->keepalives = -1; | |
65 | options->log_facility = (SyslogFacility) - 1; | |
66 | options->log_level = (LogLevel) - 1; | |
67 | options->rhosts_authentication = -1; | |
68 | options->rhosts_rsa_authentication = -1; | |
8002af61 | 69 | options->hostbased_authentication = -1; |
70 | options->hostbased_uses_name_from_packet_only = -1; | |
5260325f | 71 | options->rsa_authentication = -1; |
fa08c86b | 72 | options->pubkey_authentication = -1; |
8efc0c15 | 73 | #ifdef KRB4 |
5260325f | 74 | options->kerberos_authentication = -1; |
75 | options->kerberos_or_local_passwd = -1; | |
76 | options->kerberos_ticket_cleanup = -1; | |
8efc0c15 | 77 | #endif |
78 | #ifdef AFS | |
5260325f | 79 | options->kerberos_tgt_passing = -1; |
80 | options->afs_token_passing = -1; | |
8efc0c15 | 81 | #endif |
5260325f | 82 | options->password_authentication = -1; |
94ec8c6b | 83 | options->kbd_interactive_authentication = -1; |
d464095c | 84 | options->challenge_reponse_authentication = -1; |
5260325f | 85 | options->permit_empty_passwd = -1; |
86 | options->use_login = -1; | |
33de75a3 | 87 | options->allow_tcp_forwarding = -1; |
5260325f | 88 | options->num_allow_users = 0; |
89 | options->num_deny_users = 0; | |
90 | options->num_allow_groups = 0; | |
91 | options->num_deny_groups = 0; | |
a8be9f80 | 92 | options->ciphers = NULL; |
b2552997 | 93 | options->macs = NULL; |
a8be9f80 | 94 | options->protocol = SSH_PROTO_UNKNOWN; |
1d1ffb87 | 95 | options->gateway_ports = -1; |
38c295d6 | 96 | options->num_subsystems = 0; |
c345cf9d | 97 | options->max_startups_begin = -1; |
98 | options->max_startups_rate = -1; | |
089fbbd2 | 99 | options->max_startups = -1; |
eea39c02 | 100 | options->banner = NULL; |
61e96248 | 101 | options->reverse_mapping_check = -1; |
8efc0c15 | 102 | } |
103 | ||
6ae2364d | 104 | void |
5260325f | 105 | fill_default_server_options(ServerOptions *options) |
8efc0c15 | 106 | { |
fa08c86b | 107 | if (options->protocol == SSH_PROTO_UNKNOWN) |
108 | options->protocol = SSH_PROTO_1|SSH_PROTO_2; | |
109 | if (options->num_host_key_files == 0) { | |
110 | /* fill default hostkeys for protocols */ | |
111 | if (options->protocol & SSH_PROTO_1) | |
42f11eb2 | 112 | options->host_key_files[options->num_host_key_files++] = _PATH_HOST_KEY_FILE; |
fa08c86b | 113 | if (options->protocol & SSH_PROTO_2) |
42f11eb2 | 114 | options->host_key_files[options->num_host_key_files++] = _PATH_HOST_DSA_KEY_FILE; |
fa08c86b | 115 | } |
48e671d5 | 116 | if (options->num_ports == 0) |
117 | options->ports[options->num_ports++] = SSH_DEFAULT_PORT; | |
118 | if (options->listen_addrs == NULL) | |
2d2a2c65 | 119 | add_listen_addr(options, NULL, 0); |
0fbe8c74 | 120 | if (options->pid_file == NULL) |
42f11eb2 | 121 | options->pid_file = _PATH_SSH_DAEMON_PID_FILE; |
5260325f | 122 | if (options->server_key_bits == -1) |
123 | options->server_key_bits = 768; | |
124 | if (options->login_grace_time == -1) | |
125 | options->login_grace_time = 600; | |
126 | if (options->key_regeneration_time == -1) | |
127 | options->key_regeneration_time = 3600; | |
15853e93 | 128 | if (options->permit_root_login == PERMIT_NOT_SET) |
129 | options->permit_root_login = PERMIT_YES; | |
5260325f | 130 | if (options->ignore_rhosts == -1) |
c8d54615 | 131 | options->ignore_rhosts = 1; |
5260325f | 132 | if (options->ignore_user_known_hosts == -1) |
133 | options->ignore_user_known_hosts = 0; | |
134 | if (options->check_mail == -1) | |
135 | options->check_mail = 0; | |
136 | if (options->print_motd == -1) | |
137 | options->print_motd = 1; | |
4f4648f9 | 138 | if (options->print_lastlog == -1) |
139 | options->print_lastlog = 1; | |
5260325f | 140 | if (options->x11_forwarding == -1) |
c8d54615 | 141 | options->x11_forwarding = 0; |
5260325f | 142 | if (options->x11_display_offset == -1) |
c8d54615 | 143 | options->x11_display_offset = 10; |
fa649821 | 144 | #ifdef XAUTH_PATH |
145 | if (options->xauth_location == NULL) | |
146 | options->xauth_location = XAUTH_PATH; | |
147 | #endif /* XAUTH_PATH */ | |
5260325f | 148 | if (options->strict_modes == -1) |
149 | options->strict_modes = 1; | |
150 | if (options->keepalives == -1) | |
151 | options->keepalives = 1; | |
152 | if (options->log_facility == (SyslogFacility) (-1)) | |
153 | options->log_facility = SYSLOG_FACILITY_AUTH; | |
154 | if (options->log_level == (LogLevel) (-1)) | |
59c97189 | 155 | options->log_level = SYSLOG_LEVEL_INFO; |
5260325f | 156 | if (options->rhosts_authentication == -1) |
157 | options->rhosts_authentication = 0; | |
158 | if (options->rhosts_rsa_authentication == -1) | |
c8d54615 | 159 | options->rhosts_rsa_authentication = 0; |
8002af61 | 160 | if (options->hostbased_authentication == -1) |
161 | options->hostbased_authentication = 0; | |
162 | if (options->hostbased_uses_name_from_packet_only == -1) | |
163 | options->hostbased_uses_name_from_packet_only = 0; | |
5260325f | 164 | if (options->rsa_authentication == -1) |
165 | options->rsa_authentication = 1; | |
fa08c86b | 166 | if (options->pubkey_authentication == -1) |
167 | options->pubkey_authentication = 1; | |
8efc0c15 | 168 | #ifdef KRB4 |
5260325f | 169 | if (options->kerberos_authentication == -1) |
170 | options->kerberos_authentication = (access(KEYFILE, R_OK) == 0); | |
171 | if (options->kerberos_or_local_passwd == -1) | |
172 | options->kerberos_or_local_passwd = 1; | |
173 | if (options->kerberos_ticket_cleanup == -1) | |
174 | options->kerberos_ticket_cleanup = 1; | |
8efc0c15 | 175 | #endif /* KRB4 */ |
176 | #ifdef AFS | |
5260325f | 177 | if (options->kerberos_tgt_passing == -1) |
178 | options->kerberos_tgt_passing = 0; | |
179 | if (options->afs_token_passing == -1) | |
180 | options->afs_token_passing = k_hasafs(); | |
8efc0c15 | 181 | #endif /* AFS */ |
5260325f | 182 | if (options->password_authentication == -1) |
183 | options->password_authentication = 1; | |
94ec8c6b | 184 | if (options->kbd_interactive_authentication == -1) |
185 | options->kbd_interactive_authentication = 0; | |
d464095c | 186 | if (options->challenge_reponse_authentication == -1) |
187 | options->challenge_reponse_authentication = 1; | |
5260325f | 188 | if (options->permit_empty_passwd == -1) |
c8d54615 | 189 | options->permit_empty_passwd = 0; |
5260325f | 190 | if (options->use_login == -1) |
191 | options->use_login = 0; | |
33de75a3 | 192 | if (options->allow_tcp_forwarding == -1) |
193 | options->allow_tcp_forwarding = 1; | |
1d1ffb87 | 194 | if (options->gateway_ports == -1) |
195 | options->gateway_ports = 0; | |
089fbbd2 | 196 | if (options->max_startups == -1) |
197 | options->max_startups = 10; | |
c345cf9d | 198 | if (options->max_startups_rate == -1) |
199 | options->max_startups_rate = 100; /* 100% */ | |
200 | if (options->max_startups_begin == -1) | |
201 | options->max_startups_begin = options->max_startups; | |
61e96248 | 202 | if (options->reverse_mapping_check == -1) |
203 | options->reverse_mapping_check = 0; | |
8efc0c15 | 204 | } |
205 | ||
8efc0c15 | 206 | /* Keyword tokens. */ |
5260325f | 207 | typedef enum { |
208 | sBadOption, /* == unknown option */ | |
209 | sPort, sHostKeyFile, sServerKeyBits, sLoginGraceTime, sKeyRegenerationTime, | |
210 | sPermitRootLogin, sLogFacility, sLogLevel, | |
211 | sRhostsAuthentication, sRhostsRSAAuthentication, sRSAAuthentication, | |
8efc0c15 | 212 | #ifdef KRB4 |
5260325f | 213 | sKerberosAuthentication, sKerberosOrLocalPasswd, sKerberosTicketCleanup, |
8efc0c15 | 214 | #endif |
215 | #ifdef AFS | |
5260325f | 216 | sKerberosTgtPassing, sAFSTokenPassing, |
8efc0c15 | 217 | #endif |
d464095c | 218 | sChallengeResponseAuthentication, |
94ec8c6b | 219 | sPasswordAuthentication, sKbdInteractiveAuthentication, sListenAddress, |
4f4648f9 | 220 | sPrintMotd, sPrintLastLog, sIgnoreRhosts, |
221 | sX11Forwarding, sX11DisplayOffset, | |
9c81df4c | 222 | sStrictModes, sEmptyPasswd, sKeepAlives, sCheckMail, |
33de75a3 | 223 | sUseLogin, sAllowTcpForwarding, |
224 | sAllowUsers, sDenyUsers, sAllowGroups, sDenyGroups, | |
b2552997 | 225 | sIgnoreUserKnownHosts, sCiphers, sMacs, sProtocol, sPidFile, |
fa08c86b | 226 | sGatewayPorts, sPubkeyAuthentication, sXAuthLocation, sSubsystem, sMaxStartups, |
8002af61 | 227 | sBanner, sReverseMappingCheck, sHostbasedAuthentication, |
228 | sHostbasedUsesNameFromPacketOnly | |
8efc0c15 | 229 | } ServerOpCodes; |
230 | ||
231 | /* Textual representation of the tokens. */ | |
5260325f | 232 | static struct { |
233 | const char *name; | |
234 | ServerOpCodes opcode; | |
235 | } keywords[] = { | |
236 | { "port", sPort }, | |
237 | { "hostkey", sHostKeyFile }, | |
fa08c86b | 238 | { "hostdsakey", sHostKeyFile }, /* alias */ |
2b87da3b | 239 | { "pidfile", sPidFile }, |
5260325f | 240 | { "serverkeybits", sServerKeyBits }, |
241 | { "logingracetime", sLoginGraceTime }, | |
242 | { "keyregenerationinterval", sKeyRegenerationTime }, | |
243 | { "permitrootlogin", sPermitRootLogin }, | |
244 | { "syslogfacility", sLogFacility }, | |
245 | { "loglevel", sLogLevel }, | |
246 | { "rhostsauthentication", sRhostsAuthentication }, | |
247 | { "rhostsrsaauthentication", sRhostsRSAAuthentication }, | |
8002af61 | 248 | { "hostbasedauthentication", sHostbasedAuthentication }, |
249 | { "hostbasedusesnamefrompacketonly", sHostbasedUsesNameFromPacketOnly }, | |
5260325f | 250 | { "rsaauthentication", sRSAAuthentication }, |
fa08c86b | 251 | { "pubkeyauthentication", sPubkeyAuthentication }, |
252 | { "dsaauthentication", sPubkeyAuthentication }, /* alias */ | |
8efc0c15 | 253 | #ifdef KRB4 |
5260325f | 254 | { "kerberosauthentication", sKerberosAuthentication }, |
255 | { "kerberosorlocalpasswd", sKerberosOrLocalPasswd }, | |
256 | { "kerberosticketcleanup", sKerberosTicketCleanup }, | |
8efc0c15 | 257 | #endif |
258 | #ifdef AFS | |
5260325f | 259 | { "kerberostgtpassing", sKerberosTgtPassing }, |
260 | { "afstokenpassing", sAFSTokenPassing }, | |
8efc0c15 | 261 | #endif |
5260325f | 262 | { "passwordauthentication", sPasswordAuthentication }, |
94ec8c6b | 263 | { "kbdinteractiveauthentication", sKbdInteractiveAuthentication }, |
d464095c | 264 | { "challengeresponseauthentication", sChallengeResponseAuthentication }, |
265 | { "skeyauthentication", sChallengeResponseAuthentication }, /* alias */ | |
5260325f | 266 | { "checkmail", sCheckMail }, |
267 | { "listenaddress", sListenAddress }, | |
268 | { "printmotd", sPrintMotd }, | |
4f4648f9 | 269 | { "printlastlog", sPrintLastLog }, |
5260325f | 270 | { "ignorerhosts", sIgnoreRhosts }, |
271 | { "ignoreuserknownhosts", sIgnoreUserKnownHosts }, | |
272 | { "x11forwarding", sX11Forwarding }, | |
273 | { "x11displayoffset", sX11DisplayOffset }, | |
fa649821 | 274 | { "xauthlocation", sXAuthLocation }, |
5260325f | 275 | { "strictmodes", sStrictModes }, |
276 | { "permitemptypasswords", sEmptyPasswd }, | |
277 | { "uselogin", sUseLogin }, | |
5260325f | 278 | { "keepalive", sKeepAlives }, |
33de75a3 | 279 | { "allowtcpforwarding", sAllowTcpForwarding }, |
5260325f | 280 | { "allowusers", sAllowUsers }, |
281 | { "denyusers", sDenyUsers }, | |
282 | { "allowgroups", sAllowGroups }, | |
283 | { "denygroups", sDenyGroups }, | |
a8be9f80 | 284 | { "ciphers", sCiphers }, |
b2552997 | 285 | { "macs", sMacs }, |
a8be9f80 | 286 | { "protocol", sProtocol }, |
1d1ffb87 | 287 | { "gatewayports", sGatewayPorts }, |
38c295d6 | 288 | { "subsystem", sSubsystem }, |
089fbbd2 | 289 | { "maxstartups", sMaxStartups }, |
eea39c02 | 290 | { "banner", sBanner }, |
61e96248 | 291 | { "reversemappingcheck", sReverseMappingCheck }, |
5260325f | 292 | { NULL, 0 } |
8efc0c15 | 293 | }; |
294 | ||
aa3378df | 295 | /* |
6be9a5e8 | 296 | * Returns the number of the token pointed to by cp or sBadOption. |
aa3378df | 297 | */ |
8efc0c15 | 298 | |
6ae2364d | 299 | static ServerOpCodes |
5260325f | 300 | parse_token(const char *cp, const char *filename, |
301 | int linenum) | |
8efc0c15 | 302 | { |
1e3b8b07 | 303 | u_int i; |
8efc0c15 | 304 | |
5260325f | 305 | for (i = 0; keywords[i].name; i++) |
aa3378df | 306 | if (strcasecmp(cp, keywords[i].name) == 0) |
5260325f | 307 | return keywords[i].opcode; |
8efc0c15 | 308 | |
5260325f | 309 | fprintf(stderr, "%s: line %d: Bad configuration option: %s\n", |
310 | filename, linenum, cp); | |
311 | return sBadOption; | |
8efc0c15 | 312 | } |
313 | ||
6ae2364d | 314 | void |
2d2a2c65 | 315 | add_listen_addr(ServerOptions *options, char *addr, u_short port) |
48e671d5 | 316 | { |
48e671d5 | 317 | int i; |
318 | ||
319 | if (options->num_ports == 0) | |
320 | options->ports[options->num_ports++] = SSH_DEFAULT_PORT; | |
2d2a2c65 | 321 | if (port == 0) |
d11c1288 | 322 | for (i = 0; i < options->num_ports; i++) |
323 | add_one_listen_addr(options, addr, options->ports[i]); | |
324 | else | |
2d2a2c65 | 325 | add_one_listen_addr(options, addr, port); |
d11c1288 | 326 | } |
327 | ||
328 | void | |
329 | add_one_listen_addr(ServerOptions *options, char *addr, u_short port) | |
330 | { | |
331 | struct addrinfo hints, *ai, *aitop; | |
332 | char strport[NI_MAXSERV]; | |
333 | int gaierr; | |
334 | ||
335 | memset(&hints, 0, sizeof(hints)); | |
336 | hints.ai_family = IPv4or6; | |
337 | hints.ai_socktype = SOCK_STREAM; | |
338 | hints.ai_flags = (addr == NULL) ? AI_PASSIVE : 0; | |
339 | snprintf(strport, sizeof strport, "%d", port); | |
340 | if ((gaierr = getaddrinfo(addr, strport, &hints, &aitop)) != 0) | |
341 | fatal("bad addr or host: %s (%s)", | |
342 | addr ? addr : "<NULL>", | |
343 | gai_strerror(gaierr)); | |
344 | for (ai = aitop; ai->ai_next; ai = ai->ai_next) | |
345 | ; | |
346 | ai->ai_next = options->listen_addrs; | |
347 | options->listen_addrs = aitop; | |
48e671d5 | 348 | } |
349 | ||
8efc0c15 | 350 | /* Reads the server configuration file. */ |
351 | ||
6ae2364d | 352 | void |
5260325f | 353 | read_server_config(ServerOptions *options, const char *filename) |
8efc0c15 | 354 | { |
5260325f | 355 | FILE *f; |
356 | char line[1024]; | |
d11c1288 | 357 | char *cp, **charptr, *arg, *p; |
5260325f | 358 | int linenum, *intptr, value; |
359 | int bad_options = 0; | |
360 | ServerOpCodes opcode; | |
38c295d6 | 361 | int i; |
5260325f | 362 | |
363 | f = fopen(filename, "r"); | |
364 | if (!f) { | |
365 | perror(filename); | |
8efc0c15 | 366 | exit(1); |
5260325f | 367 | } |
368 | linenum = 0; | |
369 | while (fgets(line, sizeof(line), f)) { | |
370 | linenum++; | |
704b1659 | 371 | cp = line; |
372 | arg = strdelim(&cp); | |
373 | /* Ignore leading whitespace */ | |
374 | if (*arg == '\0') | |
375 | arg = strdelim(&cp); | |
42f11eb2 | 376 | if (!arg || !*arg || *arg == '#') |
5260325f | 377 | continue; |
fa08c86b | 378 | intptr = NULL; |
379 | charptr = NULL; | |
089fbbd2 | 380 | opcode = parse_token(arg, filename, linenum); |
5260325f | 381 | switch (opcode) { |
382 | case sBadOption: | |
383 | bad_options++; | |
384 | continue; | |
385 | case sPort: | |
48e671d5 | 386 | /* ignore ports from configfile if cmdline specifies ports */ |
387 | if (options->ports_from_cmdline) | |
388 | continue; | |
389 | if (options->listen_addrs != NULL) | |
390 | fatal("%s line %d: ports must be specified before " | |
391 | "ListenAdress.\n", filename, linenum); | |
392 | if (options->num_ports >= MAX_PORTS) | |
54b974dc | 393 | fatal("%s line %d: too many ports.", |
6ae2364d | 394 | filename, linenum); |
704b1659 | 395 | arg = strdelim(&cp); |
089fbbd2 | 396 | if (!arg || *arg == '\0') |
54b974dc | 397 | fatal("%s line %d: missing port number.", |
48e671d5 | 398 | filename, linenum); |
2d2a2c65 | 399 | options->ports[options->num_ports++] = a2port(arg); |
400 | if (options->ports[options->num_ports-1] == 0) | |
401 | fatal("%s line %d: Badly formatted port number.", | |
402 | filename, linenum); | |
48e671d5 | 403 | break; |
404 | ||
405 | case sServerKeyBits: | |
406 | intptr = &options->server_key_bits; | |
5260325f | 407 | parse_int: |
704b1659 | 408 | arg = strdelim(&cp); |
089fbbd2 | 409 | if (!arg || *arg == '\0') { |
5260325f | 410 | fprintf(stderr, "%s line %d: missing integer value.\n", |
411 | filename, linenum); | |
412 | exit(1); | |
413 | } | |
089fbbd2 | 414 | value = atoi(arg); |
5260325f | 415 | if (*intptr == -1) |
416 | *intptr = value; | |
417 | break; | |
418 | ||
5260325f | 419 | case sLoginGraceTime: |
420 | intptr = &options->login_grace_time; | |
421 | goto parse_int; | |
422 | ||
423 | case sKeyRegenerationTime: | |
424 | intptr = &options->key_regeneration_time; | |
425 | goto parse_int; | |
426 | ||
427 | case sListenAddress: | |
704b1659 | 428 | arg = strdelim(&cp); |
d11c1288 | 429 | if (!arg || *arg == '\0' || strncmp(arg, "[]", 2) == 0) |
54b974dc | 430 | fatal("%s line %d: missing inet addr.", |
48e671d5 | 431 | filename, linenum); |
d11c1288 | 432 | if (*arg == '[') { |
433 | if ((p = strchr(arg, ']')) == NULL) | |
434 | fatal("%s line %d: bad ipv6 inet addr usage.", | |
435 | filename, linenum); | |
436 | arg++; | |
437 | memmove(p, p+1, strlen(p+1)+1); | |
438 | } else if (((p = strchr(arg, ':')) == NULL) || | |
439 | (strchr(p+1, ':') != NULL)) { | |
2d2a2c65 | 440 | add_listen_addr(options, arg, 0); |
d11c1288 | 441 | break; |
442 | } | |
443 | if (*p == ':') { | |
2d2a2c65 | 444 | u_short port; |
445 | ||
d11c1288 | 446 | p++; |
447 | if (*p == '\0') | |
448 | fatal("%s line %d: bad inet addr:port usage.", | |
449 | filename, linenum); | |
450 | else { | |
451 | *(p-1) = '\0'; | |
2d2a2c65 | 452 | if ((port = a2port(p)) == 0) |
453 | fatal("%s line %d: bad port number.", | |
454 | filename, linenum); | |
455 | add_listen_addr(options, arg, port); | |
d11c1288 | 456 | } |
457 | } else if (*p == '\0') | |
2d2a2c65 | 458 | add_listen_addr(options, arg, 0); |
d11c1288 | 459 | else |
460 | fatal("%s line %d: bad inet addr usage.", | |
461 | filename, linenum); | |
5260325f | 462 | break; |
463 | ||
464 | case sHostKeyFile: | |
fa08c86b | 465 | intptr = &options->num_host_key_files; |
466 | if (*intptr >= MAX_HOSTKEYS) { | |
0c126dc9 | 467 | fprintf(stderr, |
468 | "%s line %d: too many host keys specified (max %d).\n", | |
fa08c86b | 469 | filename, linenum, MAX_HOSTKEYS); |
470 | exit(1); | |
471 | } | |
472 | charptr = &options->host_key_files[*intptr]; | |
fa649821 | 473 | parse_filename: |
704b1659 | 474 | arg = strdelim(&cp); |
089fbbd2 | 475 | if (!arg || *arg == '\0') { |
5260325f | 476 | fprintf(stderr, "%s line %d: missing file name.\n", |
0fbe8c74 | 477 | filename, linenum); |
478 | exit(1); | |
479 | } | |
fa08c86b | 480 | if (*charptr == NULL) { |
089fbbd2 | 481 | *charptr = tilde_expand_filename(arg, getuid()); |
fa08c86b | 482 | /* increase optional counter */ |
483 | if (intptr != NULL) | |
484 | *intptr = *intptr + 1; | |
485 | } | |
0fbe8c74 | 486 | break; |
487 | ||
488 | case sPidFile: | |
489 | charptr = &options->pid_file; | |
fa649821 | 490 | goto parse_filename; |
5260325f | 491 | |
5260325f | 492 | case sPermitRootLogin: |
493 | intptr = &options->permit_root_login; | |
704b1659 | 494 | arg = strdelim(&cp); |
089fbbd2 | 495 | if (!arg || *arg == '\0') { |
7c8f2a26 | 496 | fprintf(stderr, "%s line %d: missing yes/" |
497 | "without-password/forced-commands-only/no " | |
498 | "argument.\n", filename, linenum); | |
5260325f | 499 | exit(1); |
500 | } | |
089fbbd2 | 501 | if (strcmp(arg, "without-password") == 0) |
15853e93 | 502 | value = PERMIT_NO_PASSWD; |
503 | else if (strcmp(arg, "forced-commands-only") == 0) | |
504 | value = PERMIT_FORCED_ONLY; | |
089fbbd2 | 505 | else if (strcmp(arg, "yes") == 0) |
15853e93 | 506 | value = PERMIT_YES; |
089fbbd2 | 507 | else if (strcmp(arg, "no") == 0) |
15853e93 | 508 | value = PERMIT_NO; |
5260325f | 509 | else { |
15853e93 | 510 | fprintf(stderr, "%s line %d: Bad yes/" |
511 | "without-password/forced-commands-only/no " | |
512 | "argument: %s\n", filename, linenum, arg); | |
5260325f | 513 | exit(1); |
514 | } | |
515 | if (*intptr == -1) | |
516 | *intptr = value; | |
517 | break; | |
518 | ||
519 | case sIgnoreRhosts: | |
520 | intptr = &options->ignore_rhosts; | |
521 | parse_flag: | |
704b1659 | 522 | arg = strdelim(&cp); |
089fbbd2 | 523 | if (!arg || *arg == '\0') { |
5260325f | 524 | fprintf(stderr, "%s line %d: missing yes/no argument.\n", |
525 | filename, linenum); | |
526 | exit(1); | |
527 | } | |
089fbbd2 | 528 | if (strcmp(arg, "yes") == 0) |
5260325f | 529 | value = 1; |
089fbbd2 | 530 | else if (strcmp(arg, "no") == 0) |
5260325f | 531 | value = 0; |
532 | else { | |
533 | fprintf(stderr, "%s line %d: Bad yes/no argument: %s\n", | |
089fbbd2 | 534 | filename, linenum, arg); |
5260325f | 535 | exit(1); |
536 | } | |
537 | if (*intptr == -1) | |
538 | *intptr = value; | |
539 | break; | |
540 | ||
541 | case sIgnoreUserKnownHosts: | |
542 | intptr = &options->ignore_user_known_hosts; | |
c8d54615 | 543 | goto parse_flag; |
5260325f | 544 | |
545 | case sRhostsAuthentication: | |
546 | intptr = &options->rhosts_authentication; | |
547 | goto parse_flag; | |
548 | ||
549 | case sRhostsRSAAuthentication: | |
550 | intptr = &options->rhosts_rsa_authentication; | |
551 | goto parse_flag; | |
552 | ||
8002af61 | 553 | case sHostbasedAuthentication: |
554 | intptr = &options->hostbased_authentication; | |
555 | goto parse_flag; | |
556 | ||
557 | case sHostbasedUsesNameFromPacketOnly: | |
558 | intptr = &options->hostbased_uses_name_from_packet_only; | |
559 | goto parse_flag; | |
560 | ||
5260325f | 561 | case sRSAAuthentication: |
562 | intptr = &options->rsa_authentication; | |
563 | goto parse_flag; | |
564 | ||
fa08c86b | 565 | case sPubkeyAuthentication: |
566 | intptr = &options->pubkey_authentication; | |
1d1ffb87 | 567 | goto parse_flag; |
568 | ||
8efc0c15 | 569 | #ifdef KRB4 |
5260325f | 570 | case sKerberosAuthentication: |
571 | intptr = &options->kerberos_authentication; | |
572 | goto parse_flag; | |
573 | ||
574 | case sKerberosOrLocalPasswd: | |
575 | intptr = &options->kerberos_or_local_passwd; | |
576 | goto parse_flag; | |
577 | ||
578 | case sKerberosTicketCleanup: | |
579 | intptr = &options->kerberos_ticket_cleanup; | |
580 | goto parse_flag; | |
8efc0c15 | 581 | #endif |
5260325f | 582 | |
8efc0c15 | 583 | #ifdef AFS |
5260325f | 584 | case sKerberosTgtPassing: |
585 | intptr = &options->kerberos_tgt_passing; | |
586 | goto parse_flag; | |
8efc0c15 | 587 | |
5260325f | 588 | case sAFSTokenPassing: |
589 | intptr = &options->afs_token_passing; | |
590 | goto parse_flag; | |
8efc0c15 | 591 | #endif |
592 | ||
5260325f | 593 | case sPasswordAuthentication: |
594 | intptr = &options->password_authentication; | |
595 | goto parse_flag; | |
8efc0c15 | 596 | |
94ec8c6b | 597 | case sKbdInteractiveAuthentication: |
598 | intptr = &options->kbd_interactive_authentication; | |
599 | goto parse_flag; | |
600 | ||
5260325f | 601 | case sCheckMail: |
602 | intptr = &options->check_mail; | |
603 | goto parse_flag; | |
8efc0c15 | 604 | |
d464095c | 605 | case sChallengeResponseAuthentication: |
606 | intptr = &options->challenge_reponse_authentication; | |
5260325f | 607 | goto parse_flag; |
8efc0c15 | 608 | |
5260325f | 609 | case sPrintMotd: |
610 | intptr = &options->print_motd; | |
611 | goto parse_flag; | |
612 | ||
4f4648f9 | 613 | case sPrintLastLog: |
614 | intptr = &options->print_lastlog; | |
615 | goto parse_flag; | |
616 | ||
5260325f | 617 | case sX11Forwarding: |
618 | intptr = &options->x11_forwarding; | |
619 | goto parse_flag; | |
620 | ||
621 | case sX11DisplayOffset: | |
622 | intptr = &options->x11_display_offset; | |
623 | goto parse_int; | |
624 | ||
fa649821 | 625 | case sXAuthLocation: |
626 | charptr = &options->xauth_location; | |
627 | goto parse_filename; | |
2b87da3b | 628 | |
5260325f | 629 | case sStrictModes: |
630 | intptr = &options->strict_modes; | |
631 | goto parse_flag; | |
632 | ||
633 | case sKeepAlives: | |
634 | intptr = &options->keepalives; | |
635 | goto parse_flag; | |
636 | ||
637 | case sEmptyPasswd: | |
638 | intptr = &options->permit_empty_passwd; | |
639 | goto parse_flag; | |
640 | ||
641 | case sUseLogin: | |
642 | intptr = &options->use_login; | |
643 | goto parse_flag; | |
644 | ||
1d1ffb87 | 645 | case sGatewayPorts: |
646 | intptr = &options->gateway_ports; | |
647 | goto parse_flag; | |
648 | ||
61e96248 | 649 | case sReverseMappingCheck: |
650 | intptr = &options->reverse_mapping_check; | |
651 | goto parse_flag; | |
652 | ||
5260325f | 653 | case sLogFacility: |
654 | intptr = (int *) &options->log_facility; | |
704b1659 | 655 | arg = strdelim(&cp); |
089fbbd2 | 656 | value = log_facility_number(arg); |
5260325f | 657 | if (value == (SyslogFacility) - 1) |
54b974dc | 658 | fatal("%.200s line %d: unsupported log facility '%s'", |
089fbbd2 | 659 | filename, linenum, arg ? arg : "<NONE>"); |
5260325f | 660 | if (*intptr == -1) |
661 | *intptr = (SyslogFacility) value; | |
662 | break; | |
663 | ||
664 | case sLogLevel: | |
665 | intptr = (int *) &options->log_level; | |
704b1659 | 666 | arg = strdelim(&cp); |
089fbbd2 | 667 | value = log_level_number(arg); |
5260325f | 668 | if (value == (LogLevel) - 1) |
54b974dc | 669 | fatal("%.200s line %d: unsupported log level '%s'", |
089fbbd2 | 670 | filename, linenum, arg ? arg : "<NONE>"); |
5260325f | 671 | if (*intptr == -1) |
672 | *intptr = (LogLevel) value; | |
673 | break; | |
674 | ||
33de75a3 | 675 | case sAllowTcpForwarding: |
676 | intptr = &options->allow_tcp_forwarding; | |
677 | goto parse_flag; | |
678 | ||
5260325f | 679 | case sAllowUsers: |
704b1659 | 680 | while ((arg = strdelim(&cp)) && *arg != '\0') { |
a8be9f80 | 681 | if (options->num_allow_users >= MAX_ALLOW_USERS) |
54b974dc | 682 | fatal("%s line %d: too many allow users.", |
a8be9f80 | 683 | filename, linenum); |
089fbbd2 | 684 | options->allow_users[options->num_allow_users++] = xstrdup(arg); |
5260325f | 685 | } |
686 | break; | |
687 | ||
688 | case sDenyUsers: | |
704b1659 | 689 | while ((arg = strdelim(&cp)) && *arg != '\0') { |
a8be9f80 | 690 | if (options->num_deny_users >= MAX_DENY_USERS) |
54b974dc | 691 | fatal( "%s line %d: too many deny users.", |
a8be9f80 | 692 | filename, linenum); |
089fbbd2 | 693 | options->deny_users[options->num_deny_users++] = xstrdup(arg); |
5260325f | 694 | } |
695 | break; | |
696 | ||
697 | case sAllowGroups: | |
704b1659 | 698 | while ((arg = strdelim(&cp)) && *arg != '\0') { |
a8be9f80 | 699 | if (options->num_allow_groups >= MAX_ALLOW_GROUPS) |
54b974dc | 700 | fatal("%s line %d: too many allow groups.", |
a8be9f80 | 701 | filename, linenum); |
089fbbd2 | 702 | options->allow_groups[options->num_allow_groups++] = xstrdup(arg); |
5260325f | 703 | } |
704 | break; | |
705 | ||
706 | case sDenyGroups: | |
704b1659 | 707 | while ((arg = strdelim(&cp)) && *arg != '\0') { |
a8be9f80 | 708 | if (options->num_deny_groups >= MAX_DENY_GROUPS) |
54b974dc | 709 | fatal("%s line %d: too many deny groups.", |
a8be9f80 | 710 | filename, linenum); |
089fbbd2 | 711 | options->deny_groups[options->num_deny_groups++] = xstrdup(arg); |
5260325f | 712 | } |
713 | break; | |
714 | ||
a8be9f80 | 715 | case sCiphers: |
704b1659 | 716 | arg = strdelim(&cp); |
089fbbd2 | 717 | if (!arg || *arg == '\0') |
71276795 | 718 | fatal("%s line %d: Missing argument.", filename, linenum); |
089fbbd2 | 719 | if (!ciphers_valid(arg)) |
d0c832f3 | 720 | fatal("%s line %d: Bad SSH2 cipher spec '%s'.", |
089fbbd2 | 721 | filename, linenum, arg ? arg : "<NONE>"); |
a8be9f80 | 722 | if (options->ciphers == NULL) |
089fbbd2 | 723 | options->ciphers = xstrdup(arg); |
a8be9f80 | 724 | break; |
725 | ||
b2552997 | 726 | case sMacs: |
727 | arg = strdelim(&cp); | |
728 | if (!arg || *arg == '\0') | |
729 | fatal("%s line %d: Missing argument.", filename, linenum); | |
730 | if (!mac_valid(arg)) | |
731 | fatal("%s line %d: Bad SSH2 mac spec '%s'.", | |
732 | filename, linenum, arg ? arg : "<NONE>"); | |
733 | if (options->macs == NULL) | |
734 | options->macs = xstrdup(arg); | |
735 | break; | |
736 | ||
a8be9f80 | 737 | case sProtocol: |
738 | intptr = &options->protocol; | |
704b1659 | 739 | arg = strdelim(&cp); |
089fbbd2 | 740 | if (!arg || *arg == '\0') |
71276795 | 741 | fatal("%s line %d: Missing argument.", filename, linenum); |
089fbbd2 | 742 | value = proto_spec(arg); |
a8be9f80 | 743 | if (value == SSH_PROTO_UNKNOWN) |
744 | fatal("%s line %d: Bad protocol spec '%s'.", | |
089fbbd2 | 745 | filename, linenum, arg ? arg : "<NONE>"); |
a8be9f80 | 746 | if (*intptr == SSH_PROTO_UNKNOWN) |
747 | *intptr = value; | |
748 | break; | |
749 | ||
38c295d6 | 750 | case sSubsystem: |
751 | if(options->num_subsystems >= MAX_SUBSYSTEMS) { | |
752 | fatal("%s line %d: too many subsystems defined.", | |
753 | filename, linenum); | |
754 | } | |
704b1659 | 755 | arg = strdelim(&cp); |
089fbbd2 | 756 | if (!arg || *arg == '\0') |
38c295d6 | 757 | fatal("%s line %d: Missing subsystem name.", |
758 | filename, linenum); | |
759 | for (i = 0; i < options->num_subsystems; i++) | |
089fbbd2 | 760 | if(strcmp(arg, options->subsystem_name[i]) == 0) |
38c295d6 | 761 | fatal("%s line %d: Subsystem '%s' already defined.", |
089fbbd2 | 762 | filename, linenum, arg); |
763 | options->subsystem_name[options->num_subsystems] = xstrdup(arg); | |
704b1659 | 764 | arg = strdelim(&cp); |
089fbbd2 | 765 | if (!arg || *arg == '\0') |
38c295d6 | 766 | fatal("%s line %d: Missing subsystem command.", |
767 | filename, linenum); | |
089fbbd2 | 768 | options->subsystem_command[options->num_subsystems] = xstrdup(arg); |
38c295d6 | 769 | options->num_subsystems++; |
770 | break; | |
771 | ||
089fbbd2 | 772 | case sMaxStartups: |
c345cf9d | 773 | arg = strdelim(&cp); |
774 | if (!arg || *arg == '\0') | |
775 | fatal("%s line %d: Missing MaxStartups spec.", | |
776 | filename, linenum); | |
777 | if (sscanf(arg, "%d:%d:%d", | |
778 | &options->max_startups_begin, | |
779 | &options->max_startups_rate, | |
780 | &options->max_startups) == 3) { | |
781 | if (options->max_startups_begin > | |
782 | options->max_startups || | |
783 | options->max_startups_rate > 100 || | |
784 | options->max_startups_rate < 1) | |
785 | fatal("%s line %d: Illegal MaxStartups spec.", | |
786 | filename, linenum); | |
787 | break; | |
788 | } | |
089fbbd2 | 789 | intptr = &options->max_startups; |
790 | goto parse_int; | |
791 | ||
eea39c02 | 792 | case sBanner: |
793 | charptr = &options->banner; | |
794 | goto parse_filename; | |
2b87da3b | 795 | |
5260325f | 796 | default: |
797 | fprintf(stderr, "%s line %d: Missing handler for opcode %s (%d)\n", | |
089fbbd2 | 798 | filename, linenum, arg, opcode); |
5260325f | 799 | exit(1); |
8efc0c15 | 800 | } |
704b1659 | 801 | if ((arg = strdelim(&cp)) != NULL && *arg != '\0') { |
2b87da3b | 802 | fprintf(stderr, |
089fbbd2 | 803 | "%s line %d: garbage at end of line; \"%.200s\".\n", |
804 | filename, linenum, arg); | |
5260325f | 805 | exit(1); |
8efc0c15 | 806 | } |
8efc0c15 | 807 | } |
5260325f | 808 | fclose(f); |
809 | if (bad_options > 0) { | |
810 | fprintf(stderr, "%s: terminating, %d bad configuration options\n", | |
811 | filename, bad_options); | |
812 | exit(1); | |
8efc0c15 | 813 | } |
8efc0c15 | 814 | } |