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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" | |
b7c70970 | 13 | RCSID("$OpenBSD: servconf.c,v 1.78 2001/04/15 21:28:35 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; |
3ffc6336 | 102 | options->client_alive_interval = -1; |
103 | options->client_alive_count_max = -1; | |
8efc0c15 | 104 | } |
105 | ||
6ae2364d | 106 | void |
5260325f | 107 | fill_default_server_options(ServerOptions *options) |
8efc0c15 | 108 | { |
fa08c86b | 109 | if (options->protocol == SSH_PROTO_UNKNOWN) |
110 | options->protocol = SSH_PROTO_1|SSH_PROTO_2; | |
111 | if (options->num_host_key_files == 0) { | |
112 | /* fill default hostkeys for protocols */ | |
113 | if (options->protocol & SSH_PROTO_1) | |
42f11eb2 | 114 | options->host_key_files[options->num_host_key_files++] = _PATH_HOST_KEY_FILE; |
fa08c86b | 115 | if (options->protocol & SSH_PROTO_2) |
42f11eb2 | 116 | options->host_key_files[options->num_host_key_files++] = _PATH_HOST_DSA_KEY_FILE; |
fa08c86b | 117 | } |
48e671d5 | 118 | if (options->num_ports == 0) |
119 | options->ports[options->num_ports++] = SSH_DEFAULT_PORT; | |
120 | if (options->listen_addrs == NULL) | |
2d2a2c65 | 121 | add_listen_addr(options, NULL, 0); |
0fbe8c74 | 122 | if (options->pid_file == NULL) |
42f11eb2 | 123 | options->pid_file = _PATH_SSH_DAEMON_PID_FILE; |
5260325f | 124 | if (options->server_key_bits == -1) |
125 | options->server_key_bits = 768; | |
126 | if (options->login_grace_time == -1) | |
127 | options->login_grace_time = 600; | |
128 | if (options->key_regeneration_time == -1) | |
129 | options->key_regeneration_time = 3600; | |
15853e93 | 130 | if (options->permit_root_login == PERMIT_NOT_SET) |
131 | options->permit_root_login = PERMIT_YES; | |
5260325f | 132 | if (options->ignore_rhosts == -1) |
c8d54615 | 133 | options->ignore_rhosts = 1; |
5260325f | 134 | if (options->ignore_user_known_hosts == -1) |
135 | options->ignore_user_known_hosts = 0; | |
136 | if (options->check_mail == -1) | |
137 | options->check_mail = 0; | |
138 | if (options->print_motd == -1) | |
139 | options->print_motd = 1; | |
4f4648f9 | 140 | if (options->print_lastlog == -1) |
141 | options->print_lastlog = 1; | |
5260325f | 142 | if (options->x11_forwarding == -1) |
c8d54615 | 143 | options->x11_forwarding = 0; |
5260325f | 144 | if (options->x11_display_offset == -1) |
c8d54615 | 145 | options->x11_display_offset = 10; |
fa649821 | 146 | #ifdef XAUTH_PATH |
147 | if (options->xauth_location == NULL) | |
148 | options->xauth_location = XAUTH_PATH; | |
149 | #endif /* XAUTH_PATH */ | |
5260325f | 150 | if (options->strict_modes == -1) |
151 | options->strict_modes = 1; | |
152 | if (options->keepalives == -1) | |
153 | options->keepalives = 1; | |
154 | if (options->log_facility == (SyslogFacility) (-1)) | |
155 | options->log_facility = SYSLOG_FACILITY_AUTH; | |
156 | if (options->log_level == (LogLevel) (-1)) | |
59c97189 | 157 | options->log_level = SYSLOG_LEVEL_INFO; |
5260325f | 158 | if (options->rhosts_authentication == -1) |
159 | options->rhosts_authentication = 0; | |
160 | if (options->rhosts_rsa_authentication == -1) | |
c8d54615 | 161 | options->rhosts_rsa_authentication = 0; |
8002af61 | 162 | if (options->hostbased_authentication == -1) |
163 | options->hostbased_authentication = 0; | |
164 | if (options->hostbased_uses_name_from_packet_only == -1) | |
165 | options->hostbased_uses_name_from_packet_only = 0; | |
5260325f | 166 | if (options->rsa_authentication == -1) |
167 | options->rsa_authentication = 1; | |
fa08c86b | 168 | if (options->pubkey_authentication == -1) |
169 | options->pubkey_authentication = 1; | |
8efc0c15 | 170 | #ifdef KRB4 |
5260325f | 171 | if (options->kerberos_authentication == -1) |
172 | options->kerberos_authentication = (access(KEYFILE, R_OK) == 0); | |
173 | if (options->kerberos_or_local_passwd == -1) | |
174 | options->kerberos_or_local_passwd = 1; | |
175 | if (options->kerberos_ticket_cleanup == -1) | |
176 | options->kerberos_ticket_cleanup = 1; | |
8efc0c15 | 177 | #endif /* KRB4 */ |
178 | #ifdef AFS | |
5260325f | 179 | if (options->kerberos_tgt_passing == -1) |
180 | options->kerberos_tgt_passing = 0; | |
181 | if (options->afs_token_passing == -1) | |
182 | options->afs_token_passing = k_hasafs(); | |
8efc0c15 | 183 | #endif /* AFS */ |
5260325f | 184 | if (options->password_authentication == -1) |
185 | options->password_authentication = 1; | |
94ec8c6b | 186 | if (options->kbd_interactive_authentication == -1) |
187 | options->kbd_interactive_authentication = 0; | |
d464095c | 188 | if (options->challenge_reponse_authentication == -1) |
189 | options->challenge_reponse_authentication = 1; | |
5260325f | 190 | if (options->permit_empty_passwd == -1) |
c8d54615 | 191 | options->permit_empty_passwd = 0; |
5260325f | 192 | if (options->use_login == -1) |
193 | options->use_login = 0; | |
33de75a3 | 194 | if (options->allow_tcp_forwarding == -1) |
195 | options->allow_tcp_forwarding = 1; | |
1d1ffb87 | 196 | if (options->gateway_ports == -1) |
197 | options->gateway_ports = 0; | |
089fbbd2 | 198 | if (options->max_startups == -1) |
199 | options->max_startups = 10; | |
c345cf9d | 200 | if (options->max_startups_rate == -1) |
201 | options->max_startups_rate = 100; /* 100% */ | |
202 | if (options->max_startups_begin == -1) | |
203 | options->max_startups_begin = options->max_startups; | |
61e96248 | 204 | if (options->reverse_mapping_check == -1) |
205 | options->reverse_mapping_check = 0; | |
3ffc6336 | 206 | if (options->client_alive_interval == -1) |
207 | options->client_alive_interval = 0; | |
208 | if (options->client_alive_count_max == -1) | |
209 | options->client_alive_count_max = 3; | |
8efc0c15 | 210 | } |
211 | ||
8efc0c15 | 212 | /* Keyword tokens. */ |
5260325f | 213 | typedef enum { |
214 | sBadOption, /* == unknown option */ | |
215 | sPort, sHostKeyFile, sServerKeyBits, sLoginGraceTime, sKeyRegenerationTime, | |
216 | sPermitRootLogin, sLogFacility, sLogLevel, | |
217 | sRhostsAuthentication, sRhostsRSAAuthentication, sRSAAuthentication, | |
8efc0c15 | 218 | #ifdef KRB4 |
5260325f | 219 | sKerberosAuthentication, sKerberosOrLocalPasswd, sKerberosTicketCleanup, |
8efc0c15 | 220 | #endif |
221 | #ifdef AFS | |
5260325f | 222 | sKerberosTgtPassing, sAFSTokenPassing, |
8efc0c15 | 223 | #endif |
d464095c | 224 | sChallengeResponseAuthentication, |
94ec8c6b | 225 | sPasswordAuthentication, sKbdInteractiveAuthentication, sListenAddress, |
4f4648f9 | 226 | sPrintMotd, sPrintLastLog, sIgnoreRhosts, |
227 | sX11Forwarding, sX11DisplayOffset, | |
9c81df4c | 228 | sStrictModes, sEmptyPasswd, sKeepAlives, sCheckMail, |
33de75a3 | 229 | sUseLogin, sAllowTcpForwarding, |
230 | sAllowUsers, sDenyUsers, sAllowGroups, sDenyGroups, | |
b2552997 | 231 | sIgnoreUserKnownHosts, sCiphers, sMacs, sProtocol, sPidFile, |
fa08c86b | 232 | sGatewayPorts, sPubkeyAuthentication, sXAuthLocation, sSubsystem, sMaxStartups, |
8002af61 | 233 | sBanner, sReverseMappingCheck, sHostbasedAuthentication, |
3ffc6336 | 234 | sHostbasedUsesNameFromPacketOnly, sClientAliveInterval, |
235 | sClientAliveCountMax | |
8efc0c15 | 236 | } ServerOpCodes; |
237 | ||
238 | /* Textual representation of the tokens. */ | |
5260325f | 239 | static struct { |
240 | const char *name; | |
241 | ServerOpCodes opcode; | |
242 | } keywords[] = { | |
243 | { "port", sPort }, | |
244 | { "hostkey", sHostKeyFile }, | |
fa08c86b | 245 | { "hostdsakey", sHostKeyFile }, /* alias */ |
2b87da3b | 246 | { "pidfile", sPidFile }, |
5260325f | 247 | { "serverkeybits", sServerKeyBits }, |
248 | { "logingracetime", sLoginGraceTime }, | |
249 | { "keyregenerationinterval", sKeyRegenerationTime }, | |
250 | { "permitrootlogin", sPermitRootLogin }, | |
251 | { "syslogfacility", sLogFacility }, | |
252 | { "loglevel", sLogLevel }, | |
253 | { "rhostsauthentication", sRhostsAuthentication }, | |
254 | { "rhostsrsaauthentication", sRhostsRSAAuthentication }, | |
8002af61 | 255 | { "hostbasedauthentication", sHostbasedAuthentication }, |
256 | { "hostbasedusesnamefrompacketonly", sHostbasedUsesNameFromPacketOnly }, | |
5260325f | 257 | { "rsaauthentication", sRSAAuthentication }, |
fa08c86b | 258 | { "pubkeyauthentication", sPubkeyAuthentication }, |
259 | { "dsaauthentication", sPubkeyAuthentication }, /* alias */ | |
8efc0c15 | 260 | #ifdef KRB4 |
5260325f | 261 | { "kerberosauthentication", sKerberosAuthentication }, |
262 | { "kerberosorlocalpasswd", sKerberosOrLocalPasswd }, | |
263 | { "kerberosticketcleanup", sKerberosTicketCleanup }, | |
8efc0c15 | 264 | #endif |
265 | #ifdef AFS | |
5260325f | 266 | { "kerberostgtpassing", sKerberosTgtPassing }, |
267 | { "afstokenpassing", sAFSTokenPassing }, | |
8efc0c15 | 268 | #endif |
5260325f | 269 | { "passwordauthentication", sPasswordAuthentication }, |
94ec8c6b | 270 | { "kbdinteractiveauthentication", sKbdInteractiveAuthentication }, |
d464095c | 271 | { "challengeresponseauthentication", sChallengeResponseAuthentication }, |
272 | { "skeyauthentication", sChallengeResponseAuthentication }, /* alias */ | |
5260325f | 273 | { "checkmail", sCheckMail }, |
274 | { "listenaddress", sListenAddress }, | |
275 | { "printmotd", sPrintMotd }, | |
4f4648f9 | 276 | { "printlastlog", sPrintLastLog }, |
5260325f | 277 | { "ignorerhosts", sIgnoreRhosts }, |
278 | { "ignoreuserknownhosts", sIgnoreUserKnownHosts }, | |
279 | { "x11forwarding", sX11Forwarding }, | |
280 | { "x11displayoffset", sX11DisplayOffset }, | |
fa649821 | 281 | { "xauthlocation", sXAuthLocation }, |
5260325f | 282 | { "strictmodes", sStrictModes }, |
283 | { "permitemptypasswords", sEmptyPasswd }, | |
284 | { "uselogin", sUseLogin }, | |
5260325f | 285 | { "keepalive", sKeepAlives }, |
33de75a3 | 286 | { "allowtcpforwarding", sAllowTcpForwarding }, |
5260325f | 287 | { "allowusers", sAllowUsers }, |
288 | { "denyusers", sDenyUsers }, | |
289 | { "allowgroups", sAllowGroups }, | |
290 | { "denygroups", sDenyGroups }, | |
a8be9f80 | 291 | { "ciphers", sCiphers }, |
b2552997 | 292 | { "macs", sMacs }, |
a8be9f80 | 293 | { "protocol", sProtocol }, |
1d1ffb87 | 294 | { "gatewayports", sGatewayPorts }, |
38c295d6 | 295 | { "subsystem", sSubsystem }, |
089fbbd2 | 296 | { "maxstartups", sMaxStartups }, |
eea39c02 | 297 | { "banner", sBanner }, |
61e96248 | 298 | { "reversemappingcheck", sReverseMappingCheck }, |
3ffc6336 | 299 | { "clientaliveinterval", sClientAliveInterval }, |
300 | { "clientalivecountmax", sClientAliveCountMax }, | |
5260325f | 301 | { NULL, 0 } |
8efc0c15 | 302 | }; |
303 | ||
aa3378df | 304 | /* |
6be9a5e8 | 305 | * Returns the number of the token pointed to by cp or sBadOption. |
aa3378df | 306 | */ |
8efc0c15 | 307 | |
6ae2364d | 308 | static ServerOpCodes |
5260325f | 309 | parse_token(const char *cp, const char *filename, |
310 | int linenum) | |
8efc0c15 | 311 | { |
1e3b8b07 | 312 | u_int i; |
8efc0c15 | 313 | |
5260325f | 314 | for (i = 0; keywords[i].name; i++) |
aa3378df | 315 | if (strcasecmp(cp, keywords[i].name) == 0) |
5260325f | 316 | return keywords[i].opcode; |
8efc0c15 | 317 | |
b7c70970 | 318 | error("%s: line %d: Bad configuration option: %s", |
319 | filename, linenum, cp); | |
5260325f | 320 | return sBadOption; |
8efc0c15 | 321 | } |
322 | ||
6ae2364d | 323 | void |
2d2a2c65 | 324 | add_listen_addr(ServerOptions *options, char *addr, u_short port) |
48e671d5 | 325 | { |
48e671d5 | 326 | int i; |
327 | ||
328 | if (options->num_ports == 0) | |
329 | options->ports[options->num_ports++] = SSH_DEFAULT_PORT; | |
2d2a2c65 | 330 | if (port == 0) |
d11c1288 | 331 | for (i = 0; i < options->num_ports; i++) |
332 | add_one_listen_addr(options, addr, options->ports[i]); | |
333 | else | |
2d2a2c65 | 334 | add_one_listen_addr(options, addr, port); |
d11c1288 | 335 | } |
336 | ||
337 | void | |
338 | add_one_listen_addr(ServerOptions *options, char *addr, u_short port) | |
339 | { | |
340 | struct addrinfo hints, *ai, *aitop; | |
341 | char strport[NI_MAXSERV]; | |
342 | int gaierr; | |
343 | ||
344 | memset(&hints, 0, sizeof(hints)); | |
345 | hints.ai_family = IPv4or6; | |
346 | hints.ai_socktype = SOCK_STREAM; | |
347 | hints.ai_flags = (addr == NULL) ? AI_PASSIVE : 0; | |
348 | snprintf(strport, sizeof strport, "%d", port); | |
349 | if ((gaierr = getaddrinfo(addr, strport, &hints, &aitop)) != 0) | |
350 | fatal("bad addr or host: %s (%s)", | |
351 | addr ? addr : "<NULL>", | |
352 | gai_strerror(gaierr)); | |
353 | for (ai = aitop; ai->ai_next; ai = ai->ai_next) | |
354 | ; | |
355 | ai->ai_next = options->listen_addrs; | |
356 | options->listen_addrs = aitop; | |
48e671d5 | 357 | } |
358 | ||
8efc0c15 | 359 | /* Reads the server configuration file. */ |
360 | ||
6ae2364d | 361 | void |
5260325f | 362 | read_server_config(ServerOptions *options, const char *filename) |
8efc0c15 | 363 | { |
5260325f | 364 | FILE *f; |
365 | char line[1024]; | |
d11c1288 | 366 | char *cp, **charptr, *arg, *p; |
5260325f | 367 | int linenum, *intptr, value; |
368 | int bad_options = 0; | |
369 | ServerOpCodes opcode; | |
38c295d6 | 370 | int i; |
5260325f | 371 | |
372 | f = fopen(filename, "r"); | |
373 | if (!f) { | |
374 | perror(filename); | |
8efc0c15 | 375 | exit(1); |
5260325f | 376 | } |
377 | linenum = 0; | |
378 | while (fgets(line, sizeof(line), f)) { | |
379 | linenum++; | |
704b1659 | 380 | cp = line; |
381 | arg = strdelim(&cp); | |
382 | /* Ignore leading whitespace */ | |
383 | if (*arg == '\0') | |
384 | arg = strdelim(&cp); | |
42f11eb2 | 385 | if (!arg || !*arg || *arg == '#') |
5260325f | 386 | continue; |
fa08c86b | 387 | intptr = NULL; |
388 | charptr = NULL; | |
089fbbd2 | 389 | opcode = parse_token(arg, filename, linenum); |
5260325f | 390 | switch (opcode) { |
391 | case sBadOption: | |
392 | bad_options++; | |
393 | continue; | |
394 | case sPort: | |
48e671d5 | 395 | /* ignore ports from configfile if cmdline specifies ports */ |
396 | if (options->ports_from_cmdline) | |
397 | continue; | |
398 | if (options->listen_addrs != NULL) | |
399 | fatal("%s line %d: ports must be specified before " | |
400 | "ListenAdress.\n", filename, linenum); | |
401 | if (options->num_ports >= MAX_PORTS) | |
54b974dc | 402 | fatal("%s line %d: too many ports.", |
6ae2364d | 403 | filename, linenum); |
704b1659 | 404 | arg = strdelim(&cp); |
089fbbd2 | 405 | if (!arg || *arg == '\0') |
54b974dc | 406 | fatal("%s line %d: missing port number.", |
48e671d5 | 407 | filename, linenum); |
2d2a2c65 | 408 | options->ports[options->num_ports++] = a2port(arg); |
409 | if (options->ports[options->num_ports-1] == 0) | |
410 | fatal("%s line %d: Badly formatted port number.", | |
411 | filename, linenum); | |
48e671d5 | 412 | break; |
413 | ||
414 | case sServerKeyBits: | |
415 | intptr = &options->server_key_bits; | |
5260325f | 416 | parse_int: |
704b1659 | 417 | arg = strdelim(&cp); |
b7c70970 | 418 | if (!arg || *arg == '\0') |
419 | fatal("%s line %d: missing integer value.", | |
420 | filename, linenum); | |
089fbbd2 | 421 | value = atoi(arg); |
5260325f | 422 | if (*intptr == -1) |
423 | *intptr = value; | |
424 | break; | |
425 | ||
5260325f | 426 | case sLoginGraceTime: |
427 | intptr = &options->login_grace_time; | |
428 | goto parse_int; | |
429 | ||
430 | case sKeyRegenerationTime: | |
431 | intptr = &options->key_regeneration_time; | |
432 | goto parse_int; | |
433 | ||
434 | case sListenAddress: | |
704b1659 | 435 | arg = strdelim(&cp); |
d11c1288 | 436 | if (!arg || *arg == '\0' || strncmp(arg, "[]", 2) == 0) |
54b974dc | 437 | fatal("%s line %d: missing inet addr.", |
48e671d5 | 438 | filename, linenum); |
d11c1288 | 439 | if (*arg == '[') { |
440 | if ((p = strchr(arg, ']')) == NULL) | |
441 | fatal("%s line %d: bad ipv6 inet addr usage.", | |
442 | filename, linenum); | |
443 | arg++; | |
444 | memmove(p, p+1, strlen(p+1)+1); | |
445 | } else if (((p = strchr(arg, ':')) == NULL) || | |
446 | (strchr(p+1, ':') != NULL)) { | |
2d2a2c65 | 447 | add_listen_addr(options, arg, 0); |
d11c1288 | 448 | break; |
449 | } | |
450 | if (*p == ':') { | |
2d2a2c65 | 451 | u_short port; |
452 | ||
d11c1288 | 453 | p++; |
454 | if (*p == '\0') | |
455 | fatal("%s line %d: bad inet addr:port usage.", | |
456 | filename, linenum); | |
457 | else { | |
458 | *(p-1) = '\0'; | |
2d2a2c65 | 459 | if ((port = a2port(p)) == 0) |
460 | fatal("%s line %d: bad port number.", | |
461 | filename, linenum); | |
462 | add_listen_addr(options, arg, port); | |
d11c1288 | 463 | } |
464 | } else if (*p == '\0') | |
2d2a2c65 | 465 | add_listen_addr(options, arg, 0); |
d11c1288 | 466 | else |
467 | fatal("%s line %d: bad inet addr usage.", | |
468 | filename, linenum); | |
5260325f | 469 | break; |
470 | ||
471 | case sHostKeyFile: | |
fa08c86b | 472 | intptr = &options->num_host_key_files; |
b7c70970 | 473 | if (*intptr >= MAX_HOSTKEYS) |
474 | fatal("%s line %d: too many host keys specified (max %d).", | |
fa08c86b | 475 | filename, linenum, MAX_HOSTKEYS); |
fa08c86b | 476 | charptr = &options->host_key_files[*intptr]; |
fa649821 | 477 | parse_filename: |
704b1659 | 478 | arg = strdelim(&cp); |
b7c70970 | 479 | if (!arg || *arg == '\0') |
480 | fatal("%s line %d: missing file name.", | |
0fbe8c74 | 481 | filename, linenum); |
fa08c86b | 482 | if (*charptr == NULL) { |
089fbbd2 | 483 | *charptr = tilde_expand_filename(arg, getuid()); |
fa08c86b | 484 | /* increase optional counter */ |
485 | if (intptr != NULL) | |
486 | *intptr = *intptr + 1; | |
487 | } | |
0fbe8c74 | 488 | break; |
489 | ||
490 | case sPidFile: | |
491 | charptr = &options->pid_file; | |
fa649821 | 492 | goto parse_filename; |
5260325f | 493 | |
5260325f | 494 | case sPermitRootLogin: |
495 | intptr = &options->permit_root_login; | |
704b1659 | 496 | arg = strdelim(&cp); |
b7c70970 | 497 | if (!arg || *arg == '\0') |
498 | fatal("%s line %d: missing yes/" | |
7c8f2a26 | 499 | "without-password/forced-commands-only/no " |
b7c70970 | 500 | "argument.", filename, linenum); |
501 | value = 0; /* silence compiler */ | |
089fbbd2 | 502 | if (strcmp(arg, "without-password") == 0) |
15853e93 | 503 | value = PERMIT_NO_PASSWD; |
504 | else if (strcmp(arg, "forced-commands-only") == 0) | |
505 | value = PERMIT_FORCED_ONLY; | |
089fbbd2 | 506 | else if (strcmp(arg, "yes") == 0) |
15853e93 | 507 | value = PERMIT_YES; |
089fbbd2 | 508 | else if (strcmp(arg, "no") == 0) |
15853e93 | 509 | value = PERMIT_NO; |
b7c70970 | 510 | else |
511 | fatal("%s line %d: Bad yes/" | |
15853e93 | 512 | "without-password/forced-commands-only/no " |
b7c70970 | 513 | "argument: %s", filename, linenum, arg); |
5260325f | 514 | if (*intptr == -1) |
515 | *intptr = value; | |
516 | break; | |
517 | ||
518 | case sIgnoreRhosts: | |
519 | intptr = &options->ignore_rhosts; | |
520 | parse_flag: | |
704b1659 | 521 | arg = strdelim(&cp); |
b7c70970 | 522 | if (!arg || *arg == '\0') |
523 | fatal("%s line %d: missing yes/no argument.", | |
524 | filename, linenum); | |
525 | value = 0; /* silence compiler */ | |
089fbbd2 | 526 | if (strcmp(arg, "yes") == 0) |
5260325f | 527 | value = 1; |
089fbbd2 | 528 | else if (strcmp(arg, "no") == 0) |
5260325f | 529 | value = 0; |
b7c70970 | 530 | else |
531 | fatal("%s line %d: Bad yes/no argument: %s", | |
089fbbd2 | 532 | filename, linenum, arg); |
5260325f | 533 | if (*intptr == -1) |
534 | *intptr = value; | |
535 | break; | |
536 | ||
537 | case sIgnoreUserKnownHosts: | |
538 | intptr = &options->ignore_user_known_hosts; | |
c8d54615 | 539 | goto parse_flag; |
5260325f | 540 | |
541 | case sRhostsAuthentication: | |
542 | intptr = &options->rhosts_authentication; | |
543 | goto parse_flag; | |
544 | ||
545 | case sRhostsRSAAuthentication: | |
546 | intptr = &options->rhosts_rsa_authentication; | |
547 | goto parse_flag; | |
548 | ||
8002af61 | 549 | case sHostbasedAuthentication: |
550 | intptr = &options->hostbased_authentication; | |
551 | goto parse_flag; | |
552 | ||
553 | case sHostbasedUsesNameFromPacketOnly: | |
554 | intptr = &options->hostbased_uses_name_from_packet_only; | |
555 | goto parse_flag; | |
556 | ||
5260325f | 557 | case sRSAAuthentication: |
558 | intptr = &options->rsa_authentication; | |
559 | goto parse_flag; | |
560 | ||
fa08c86b | 561 | case sPubkeyAuthentication: |
562 | intptr = &options->pubkey_authentication; | |
1d1ffb87 | 563 | goto parse_flag; |
564 | ||
8efc0c15 | 565 | #ifdef KRB4 |
5260325f | 566 | case sKerberosAuthentication: |
567 | intptr = &options->kerberos_authentication; | |
568 | goto parse_flag; | |
569 | ||
570 | case sKerberosOrLocalPasswd: | |
571 | intptr = &options->kerberos_or_local_passwd; | |
572 | goto parse_flag; | |
573 | ||
574 | case sKerberosTicketCleanup: | |
575 | intptr = &options->kerberos_ticket_cleanup; | |
576 | goto parse_flag; | |
8efc0c15 | 577 | #endif |
5260325f | 578 | |
8efc0c15 | 579 | #ifdef AFS |
5260325f | 580 | case sKerberosTgtPassing: |
581 | intptr = &options->kerberos_tgt_passing; | |
582 | goto parse_flag; | |
8efc0c15 | 583 | |
5260325f | 584 | case sAFSTokenPassing: |
585 | intptr = &options->afs_token_passing; | |
586 | goto parse_flag; | |
8efc0c15 | 587 | #endif |
588 | ||
5260325f | 589 | case sPasswordAuthentication: |
590 | intptr = &options->password_authentication; | |
591 | goto parse_flag; | |
8efc0c15 | 592 | |
94ec8c6b | 593 | case sKbdInteractiveAuthentication: |
594 | intptr = &options->kbd_interactive_authentication; | |
595 | goto parse_flag; | |
596 | ||
5260325f | 597 | case sCheckMail: |
598 | intptr = &options->check_mail; | |
599 | goto parse_flag; | |
8efc0c15 | 600 | |
d464095c | 601 | case sChallengeResponseAuthentication: |
602 | intptr = &options->challenge_reponse_authentication; | |
5260325f | 603 | goto parse_flag; |
8efc0c15 | 604 | |
5260325f | 605 | case sPrintMotd: |
606 | intptr = &options->print_motd; | |
607 | goto parse_flag; | |
608 | ||
4f4648f9 | 609 | case sPrintLastLog: |
610 | intptr = &options->print_lastlog; | |
611 | goto parse_flag; | |
612 | ||
5260325f | 613 | case sX11Forwarding: |
614 | intptr = &options->x11_forwarding; | |
615 | goto parse_flag; | |
616 | ||
617 | case sX11DisplayOffset: | |
618 | intptr = &options->x11_display_offset; | |
619 | goto parse_int; | |
620 | ||
fa649821 | 621 | case sXAuthLocation: |
622 | charptr = &options->xauth_location; | |
623 | goto parse_filename; | |
2b87da3b | 624 | |
5260325f | 625 | case sStrictModes: |
626 | intptr = &options->strict_modes; | |
627 | goto parse_flag; | |
628 | ||
629 | case sKeepAlives: | |
630 | intptr = &options->keepalives; | |
631 | goto parse_flag; | |
632 | ||
633 | case sEmptyPasswd: | |
634 | intptr = &options->permit_empty_passwd; | |
635 | goto parse_flag; | |
636 | ||
637 | case sUseLogin: | |
638 | intptr = &options->use_login; | |
639 | goto parse_flag; | |
640 | ||
1d1ffb87 | 641 | case sGatewayPorts: |
642 | intptr = &options->gateway_ports; | |
643 | goto parse_flag; | |
644 | ||
61e96248 | 645 | case sReverseMappingCheck: |
646 | intptr = &options->reverse_mapping_check; | |
647 | goto parse_flag; | |
648 | ||
5260325f | 649 | case sLogFacility: |
650 | intptr = (int *) &options->log_facility; | |
704b1659 | 651 | arg = strdelim(&cp); |
089fbbd2 | 652 | value = log_facility_number(arg); |
5260325f | 653 | if (value == (SyslogFacility) - 1) |
54b974dc | 654 | fatal("%.200s line %d: unsupported log facility '%s'", |
089fbbd2 | 655 | filename, linenum, arg ? arg : "<NONE>"); |
5260325f | 656 | if (*intptr == -1) |
657 | *intptr = (SyslogFacility) value; | |
658 | break; | |
659 | ||
660 | case sLogLevel: | |
661 | intptr = (int *) &options->log_level; | |
704b1659 | 662 | arg = strdelim(&cp); |
089fbbd2 | 663 | value = log_level_number(arg); |
5260325f | 664 | if (value == (LogLevel) - 1) |
54b974dc | 665 | fatal("%.200s line %d: unsupported log level '%s'", |
089fbbd2 | 666 | filename, linenum, arg ? arg : "<NONE>"); |
5260325f | 667 | if (*intptr == -1) |
668 | *intptr = (LogLevel) value; | |
669 | break; | |
670 | ||
33de75a3 | 671 | case sAllowTcpForwarding: |
672 | intptr = &options->allow_tcp_forwarding; | |
673 | goto parse_flag; | |
674 | ||
5260325f | 675 | case sAllowUsers: |
704b1659 | 676 | while ((arg = strdelim(&cp)) && *arg != '\0') { |
a8be9f80 | 677 | if (options->num_allow_users >= MAX_ALLOW_USERS) |
54b974dc | 678 | fatal("%s line %d: too many allow users.", |
a8be9f80 | 679 | filename, linenum); |
089fbbd2 | 680 | options->allow_users[options->num_allow_users++] = xstrdup(arg); |
5260325f | 681 | } |
682 | break; | |
683 | ||
684 | case sDenyUsers: | |
704b1659 | 685 | while ((arg = strdelim(&cp)) && *arg != '\0') { |
a8be9f80 | 686 | if (options->num_deny_users >= MAX_DENY_USERS) |
54b974dc | 687 | fatal( "%s line %d: too many deny users.", |
a8be9f80 | 688 | filename, linenum); |
089fbbd2 | 689 | options->deny_users[options->num_deny_users++] = xstrdup(arg); |
5260325f | 690 | } |
691 | break; | |
692 | ||
693 | case sAllowGroups: | |
704b1659 | 694 | while ((arg = strdelim(&cp)) && *arg != '\0') { |
a8be9f80 | 695 | if (options->num_allow_groups >= MAX_ALLOW_GROUPS) |
54b974dc | 696 | fatal("%s line %d: too many allow groups.", |
a8be9f80 | 697 | filename, linenum); |
089fbbd2 | 698 | options->allow_groups[options->num_allow_groups++] = xstrdup(arg); |
5260325f | 699 | } |
700 | break; | |
701 | ||
702 | case sDenyGroups: | |
704b1659 | 703 | while ((arg = strdelim(&cp)) && *arg != '\0') { |
a8be9f80 | 704 | if (options->num_deny_groups >= MAX_DENY_GROUPS) |
54b974dc | 705 | fatal("%s line %d: too many deny groups.", |
a8be9f80 | 706 | filename, linenum); |
089fbbd2 | 707 | options->deny_groups[options->num_deny_groups++] = xstrdup(arg); |
5260325f | 708 | } |
709 | break; | |
710 | ||
a8be9f80 | 711 | case sCiphers: |
704b1659 | 712 | arg = strdelim(&cp); |
089fbbd2 | 713 | if (!arg || *arg == '\0') |
71276795 | 714 | fatal("%s line %d: Missing argument.", filename, linenum); |
089fbbd2 | 715 | if (!ciphers_valid(arg)) |
d0c832f3 | 716 | fatal("%s line %d: Bad SSH2 cipher spec '%s'.", |
089fbbd2 | 717 | filename, linenum, arg ? arg : "<NONE>"); |
a8be9f80 | 718 | if (options->ciphers == NULL) |
089fbbd2 | 719 | options->ciphers = xstrdup(arg); |
a8be9f80 | 720 | break; |
721 | ||
b2552997 | 722 | case sMacs: |
723 | arg = strdelim(&cp); | |
724 | if (!arg || *arg == '\0') | |
725 | fatal("%s line %d: Missing argument.", filename, linenum); | |
726 | if (!mac_valid(arg)) | |
727 | fatal("%s line %d: Bad SSH2 mac spec '%s'.", | |
728 | filename, linenum, arg ? arg : "<NONE>"); | |
729 | if (options->macs == NULL) | |
730 | options->macs = xstrdup(arg); | |
731 | break; | |
732 | ||
a8be9f80 | 733 | case sProtocol: |
734 | intptr = &options->protocol; | |
704b1659 | 735 | arg = strdelim(&cp); |
089fbbd2 | 736 | if (!arg || *arg == '\0') |
71276795 | 737 | fatal("%s line %d: Missing argument.", filename, linenum); |
089fbbd2 | 738 | value = proto_spec(arg); |
a8be9f80 | 739 | if (value == SSH_PROTO_UNKNOWN) |
740 | fatal("%s line %d: Bad protocol spec '%s'.", | |
089fbbd2 | 741 | filename, linenum, arg ? arg : "<NONE>"); |
a8be9f80 | 742 | if (*intptr == SSH_PROTO_UNKNOWN) |
743 | *intptr = value; | |
744 | break; | |
745 | ||
38c295d6 | 746 | case sSubsystem: |
747 | if(options->num_subsystems >= MAX_SUBSYSTEMS) { | |
748 | fatal("%s line %d: too many subsystems defined.", | |
749 | filename, linenum); | |
750 | } | |
704b1659 | 751 | arg = strdelim(&cp); |
089fbbd2 | 752 | if (!arg || *arg == '\0') |
38c295d6 | 753 | fatal("%s line %d: Missing subsystem name.", |
754 | filename, linenum); | |
755 | for (i = 0; i < options->num_subsystems; i++) | |
089fbbd2 | 756 | if(strcmp(arg, options->subsystem_name[i]) == 0) |
38c295d6 | 757 | fatal("%s line %d: Subsystem '%s' already defined.", |
089fbbd2 | 758 | filename, linenum, arg); |
759 | options->subsystem_name[options->num_subsystems] = xstrdup(arg); | |
704b1659 | 760 | arg = strdelim(&cp); |
089fbbd2 | 761 | if (!arg || *arg == '\0') |
38c295d6 | 762 | fatal("%s line %d: Missing subsystem command.", |
763 | filename, linenum); | |
089fbbd2 | 764 | options->subsystem_command[options->num_subsystems] = xstrdup(arg); |
38c295d6 | 765 | options->num_subsystems++; |
766 | break; | |
767 | ||
089fbbd2 | 768 | case sMaxStartups: |
c345cf9d | 769 | arg = strdelim(&cp); |
770 | if (!arg || *arg == '\0') | |
771 | fatal("%s line %d: Missing MaxStartups spec.", | |
772 | filename, linenum); | |
773 | if (sscanf(arg, "%d:%d:%d", | |
774 | &options->max_startups_begin, | |
775 | &options->max_startups_rate, | |
776 | &options->max_startups) == 3) { | |
777 | if (options->max_startups_begin > | |
778 | options->max_startups || | |
779 | options->max_startups_rate > 100 || | |
780 | options->max_startups_rate < 1) | |
781 | fatal("%s line %d: Illegal MaxStartups spec.", | |
782 | filename, linenum); | |
783 | break; | |
784 | } | |
089fbbd2 | 785 | intptr = &options->max_startups; |
786 | goto parse_int; | |
787 | ||
eea39c02 | 788 | case sBanner: |
789 | charptr = &options->banner; | |
790 | goto parse_filename; | |
3ffc6336 | 791 | case sClientAliveInterval: |
792 | intptr = &options->client_alive_interval; | |
793 | goto parse_int; | |
794 | case sClientAliveCountMax: | |
795 | intptr = &options->client_alive_count_max; | |
796 | goto parse_int; | |
5260325f | 797 | default: |
b7c70970 | 798 | fatal("%s line %d: Missing handler for opcode %s (%d)", |
799 | filename, linenum, arg, opcode); | |
8efc0c15 | 800 | } |
b7c70970 | 801 | if ((arg = strdelim(&cp)) != NULL && *arg != '\0') |
802 | fatal("%s line %d: garbage at end of line; \"%.200s\".", | |
803 | filename, linenum, arg); | |
8efc0c15 | 804 | } |
5260325f | 805 | fclose(f); |
b7c70970 | 806 | if (bad_options > 0) |
807 | fatal("%s: terminating, %d bad configuration options", | |
808 | filename, bad_options); | |
8efc0c15 | 809 | } |