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8efc0c15 | 1 | /* |
5260325f | 2 | * Author: Tatu Ylonen <ylo@cs.hut.fi> |
5260325f | 3 | * Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland |
4 | * All rights reserved | |
5260325f | 5 | * Functions for reading the configuration files. |
6ae2364d | 6 | * |
bcbf86ec | 7 | * As far as I am concerned, the code I have written for this software |
8 | * can be used freely for any purpose. Any derived versions of this | |
9 | * software must be clearly marked as such, and if the derived work is | |
10 | * incompatible with the protocol description in the RFC file, it must be | |
11 | * called by a name other than "ssh" or "Secure Shell". | |
5260325f | 12 | */ |
8efc0c15 | 13 | |
14 | #include "includes.h" | |
21289cd0 | 15 | RCSID("$OpenBSD: readconf.c,v 1.107 2003/05/14 18:16:20 jakob Exp $"); |
8efc0c15 | 16 | |
17 | #include "ssh.h" | |
8efc0c15 | 18 | #include "xmalloc.h" |
a8be9f80 | 19 | #include "compat.h" |
42f11eb2 | 20 | #include "cipher.h" |
21 | #include "pathnames.h" | |
22 | #include "log.h" | |
23 | #include "readconf.h" | |
24 | #include "match.h" | |
25 | #include "misc.h" | |
b2552997 | 26 | #include "kex.h" |
27 | #include "mac.h" | |
8efc0c15 | 28 | |
29 | /* Format of the configuration file: | |
30 | ||
31 | # Configuration data is parsed as follows: | |
32 | # 1. command line options | |
33 | # 2. user-specific file | |
34 | # 3. system-wide file | |
35 | # Any configuration value is only changed the first time it is set. | |
36 | # Thus, host-specific definitions should be at the beginning of the | |
37 | # configuration file, and defaults at the end. | |
38 | ||
39 | # Host-specific declarations. These may override anything above. A single | |
40 | # host may match multiple declarations; these are processed in the order | |
41 | # that they are given in. | |
42 | ||
43 | Host *.ngs.fi ngs.fi | |
80fcb74e | 44 | User foo |
8efc0c15 | 45 | |
46 | Host fake.com | |
47 | HostName another.host.name.real.org | |
48 | User blaah | |
49 | Port 34289 | |
50 | ForwardX11 no | |
51 | ForwardAgent no | |
52 | ||
53 | Host books.com | |
54 | RemoteForward 9999 shadows.cs.hut.fi:9999 | |
55 | Cipher 3des | |
56 | ||
57 | Host fascist.blob.com | |
58 | Port 23123 | |
59 | User tylonen | |
60 | RhostsAuthentication no | |
61 | PasswordAuthentication no | |
62 | ||
63 | Host puukko.hut.fi | |
64 | User t35124p | |
65 | ProxyCommand ssh-proxy %h %p | |
66 | ||
67 | Host *.fr | |
80fcb74e | 68 | PublicKeyAuthentication no |
8efc0c15 | 69 | |
70 | Host *.su | |
71 | Cipher none | |
72 | PasswordAuthentication no | |
73 | ||
74 | # Defaults for various options | |
75 | Host * | |
76 | ForwardAgent no | |
fa08c86b | 77 | ForwardX11 no |
8efc0c15 | 78 | RhostsAuthentication yes |
79 | PasswordAuthentication yes | |
80 | RSAAuthentication yes | |
81 | RhostsRSAAuthentication yes | |
8efc0c15 | 82 | StrictHostKeyChecking yes |
83 | KeepAlives no | |
84 | IdentityFile ~/.ssh/identity | |
85 | Port 22 | |
86 | EscapeChar ~ | |
87 | ||
88 | */ | |
89 | ||
90 | /* Keyword tokens. */ | |
91 | ||
5260325f | 92 | typedef enum { |
93 | oBadOption, | |
94 | oForwardAgent, oForwardX11, oGatewayPorts, oRhostsAuthentication, | |
7203d6bb | 95 | oPasswordAuthentication, oRSAAuthentication, |
d464095c | 96 | oChallengeResponseAuthentication, oXAuthLocation, |
ced49be2 | 97 | #if defined(KRB4) || defined(KRB5) |
5260325f | 98 | oKerberosAuthentication, |
ced49be2 | 99 | #endif |
100 | #if defined(AFS) || defined(KRB5) | |
101 | oKerberosTgtPassing, | |
102 | #endif | |
8efc0c15 | 103 | #ifdef AFS |
ced49be2 | 104 | oAFSTokenPassing, |
8efc0c15 | 105 | #endif |
5260325f | 106 | oIdentityFile, oHostName, oPort, oCipher, oRemoteForward, oLocalForward, |
107 | oUser, oHost, oEscapeChar, oRhostsRSAAuthentication, oProxyCommand, | |
108 | oGlobalKnownHostsFile, oUserKnownHostsFile, oConnectionAttempts, | |
109 | oBatchMode, oCheckHostIP, oStrictHostKeyChecking, oCompression, | |
d464095c | 110 | oCompressionLevel, oKeepAlives, oNumberOfPasswordPrompts, |
b2552997 | 111 | oUsePrivilegedPort, oLogLevel, oCiphers, oProtocol, oMacs, |
fa08c86b | 112 | oGlobalKnownHostsFile2, oUserKnownHostsFile2, oPubkeyAuthentication, |
cab80f75 | 113 | oKbdInteractiveAuthentication, oKbdInteractiveDevices, oHostKeyAlias, |
e961a8f9 | 114 | oDynamicForward, oPreferredAuthentications, oHostbasedAuthentication, |
e1c5bfaf | 115 | oHostKeyAlgorithms, oBindAddress, oSmartcardDevice, |
80fcb74e | 116 | oClearAllForwardings, oNoHostAuthenticationForLocalhost, |
21289cd0 | 117 | oEnableSSHKeysign, oRekeyLimit, oVerifyHostKeyDNS, |
80fcb74e | 118 | oDeprecated |
8efc0c15 | 119 | } OpCodes; |
120 | ||
121 | /* Textual representations of the tokens. */ | |
122 | ||
5260325f | 123 | static struct { |
124 | const char *name; | |
125 | OpCodes opcode; | |
126 | } keywords[] = { | |
127 | { "forwardagent", oForwardAgent }, | |
128 | { "forwardx11", oForwardX11 }, | |
fa649821 | 129 | { "xauthlocation", oXAuthLocation }, |
5260325f | 130 | { "gatewayports", oGatewayPorts }, |
131 | { "useprivilegedport", oUsePrivilegedPort }, | |
132 | { "rhostsauthentication", oRhostsAuthentication }, | |
133 | { "passwordauthentication", oPasswordAuthentication }, | |
94ec8c6b | 134 | { "kbdinteractiveauthentication", oKbdInteractiveAuthentication }, |
135 | { "kbdinteractivedevices", oKbdInteractiveDevices }, | |
5260325f | 136 | { "rsaauthentication", oRSAAuthentication }, |
fa08c86b | 137 | { "pubkeyauthentication", oPubkeyAuthentication }, |
d464095c | 138 | { "dsaauthentication", oPubkeyAuthentication }, /* alias */ |
8002af61 | 139 | { "rhostsrsaauthentication", oRhostsRSAAuthentication }, |
0140e66a | 140 | { "hostbasedauthentication", oHostbasedAuthentication }, |
d464095c | 141 | { "challengeresponseauthentication", oChallengeResponseAuthentication }, |
142 | { "skeyauthentication", oChallengeResponseAuthentication }, /* alias */ | |
143 | { "tisauthentication", oChallengeResponseAuthentication }, /* alias */ | |
ced49be2 | 144 | #if defined(KRB4) || defined(KRB5) |
5260325f | 145 | { "kerberosauthentication", oKerberosAuthentication }, |
ced49be2 | 146 | #endif |
147 | #if defined(AFS) || defined(KRB5) | |
5260325f | 148 | { "kerberostgtpassing", oKerberosTgtPassing }, |
ced49be2 | 149 | #endif |
150 | #ifdef AFS | |
5260325f | 151 | { "afstokenpassing", oAFSTokenPassing }, |
8efc0c15 | 152 | #endif |
80fcb74e | 153 | { "fallbacktorsh", oDeprecated }, |
154 | { "usersh", oDeprecated }, | |
5260325f | 155 | { "identityfile", oIdentityFile }, |
fa08c86b | 156 | { "identityfile2", oIdentityFile }, /* alias */ |
5260325f | 157 | { "hostname", oHostName }, |
8abcdba4 | 158 | { "hostkeyalias", oHostKeyAlias }, |
5260325f | 159 | { "proxycommand", oProxyCommand }, |
160 | { "port", oPort }, | |
161 | { "cipher", oCipher }, | |
a8be9f80 | 162 | { "ciphers", oCiphers }, |
b2552997 | 163 | { "macs", oMacs }, |
a8be9f80 | 164 | { "protocol", oProtocol }, |
5260325f | 165 | { "remoteforward", oRemoteForward }, |
166 | { "localforward", oLocalForward }, | |
167 | { "user", oUser }, | |
168 | { "host", oHost }, | |
169 | { "escapechar", oEscapeChar }, | |
5260325f | 170 | { "globalknownhostsfile", oGlobalKnownHostsFile }, |
f49bc4f7 | 171 | { "userknownhostsfile", oUserKnownHostsFile }, /* obsolete */ |
a306f2dd | 172 | { "globalknownhostsfile2", oGlobalKnownHostsFile2 }, |
f49bc4f7 | 173 | { "userknownhostsfile2", oUserKnownHostsFile2 }, /* obsolete */ |
5260325f | 174 | { "connectionattempts", oConnectionAttempts }, |
175 | { "batchmode", oBatchMode }, | |
176 | { "checkhostip", oCheckHostIP }, | |
177 | { "stricthostkeychecking", oStrictHostKeyChecking }, | |
178 | { "compression", oCompression }, | |
179 | { "compressionlevel", oCompressionLevel }, | |
180 | { "keepalive", oKeepAlives }, | |
181 | { "numberofpasswordprompts", oNumberOfPasswordPrompts }, | |
5260325f | 182 | { "loglevel", oLogLevel }, |
0490e609 | 183 | { "dynamicforward", oDynamicForward }, |
cab80f75 | 184 | { "preferredauthentications", oPreferredAuthentications }, |
e961a8f9 | 185 | { "hostkeyalgorithms", oHostKeyAlgorithms }, |
3435f5a6 | 186 | { "bindaddress", oBindAddress }, |
eea098a3 | 187 | { "smartcarddevice", oSmartcardDevice }, |
184eed6a | 188 | { "clearallforwardings", oClearAllForwardings }, |
cc46e2ee | 189 | { "enablesshkeysign", oEnableSSHKeysign }, |
21289cd0 | 190 | { "verifyhostkeydns", oVerifyHostKeyDNS }, |
184eed6a | 191 | { "nohostauthenticationforlocalhost", oNoHostAuthenticationForLocalhost }, |
ffd7b36b | 192 | { "rekeylimit", oRekeyLimit }, |
17a3011c | 193 | { NULL, oBadOption } |
6a17f9c2 | 194 | }; |
195 | ||
aa3378df | 196 | /* |
197 | * Adds a local TCP/IP port forward to options. Never returns if there is an | |
198 | * error. | |
199 | */ | |
8efc0c15 | 200 | |
6ae2364d | 201 | void |
57112b5a | 202 | add_local_forward(Options *options, u_short port, const char *host, |
203 | u_short host_port) | |
8efc0c15 | 204 | { |
5260325f | 205 | Forward *fwd; |
e6f15ed1 | 206 | #ifndef NO_IPPORT_RESERVED_CONCEPT |
5260325f | 207 | extern uid_t original_real_uid; |
5260325f | 208 | if (port < IPPORT_RESERVED && original_real_uid != 0) |
54b974dc | 209 | fatal("Privileged ports can only be forwarded by root."); |
3c62e7eb | 210 | #endif |
5260325f | 211 | if (options->num_local_forwards >= SSH_MAX_FORWARDS_PER_DIRECTION) |
212 | fatal("Too many local forwards (max %d).", SSH_MAX_FORWARDS_PER_DIRECTION); | |
213 | fwd = &options->local_forwards[options->num_local_forwards++]; | |
214 | fwd->port = port; | |
215 | fwd->host = xstrdup(host); | |
216 | fwd->host_port = host_port; | |
8efc0c15 | 217 | } |
218 | ||
aa3378df | 219 | /* |
220 | * Adds a remote TCP/IP port forward to options. Never returns if there is | |
221 | * an error. | |
222 | */ | |
8efc0c15 | 223 | |
6ae2364d | 224 | void |
57112b5a | 225 | add_remote_forward(Options *options, u_short port, const char *host, |
226 | u_short host_port) | |
8efc0c15 | 227 | { |
5260325f | 228 | Forward *fwd; |
229 | if (options->num_remote_forwards >= SSH_MAX_FORWARDS_PER_DIRECTION) | |
230 | fatal("Too many remote forwards (max %d).", | |
184eed6a | 231 | SSH_MAX_FORWARDS_PER_DIRECTION); |
5260325f | 232 | fwd = &options->remote_forwards[options->num_remote_forwards++]; |
233 | fwd->port = port; | |
234 | fwd->host = xstrdup(host); | |
235 | fwd->host_port = host_port; | |
8efc0c15 | 236 | } |
237 | ||
e1c5bfaf | 238 | static void |
239 | clear_forwardings(Options *options) | |
240 | { | |
241 | int i; | |
242 | ||
243 | for (i = 0; i < options->num_local_forwards; i++) | |
244 | xfree(options->local_forwards[i].host); | |
245 | options->num_local_forwards = 0; | |
246 | for (i = 0; i < options->num_remote_forwards; i++) | |
247 | xfree(options->remote_forwards[i].host); | |
248 | options->num_remote_forwards = 0; | |
249 | } | |
250 | ||
aa3378df | 251 | /* |
6be9a5e8 | 252 | * Returns the number of the token pointed to by cp or oBadOption. |
aa3378df | 253 | */ |
8efc0c15 | 254 | |
6ae2364d | 255 | static OpCodes |
5260325f | 256 | parse_token(const char *cp, const char *filename, int linenum) |
8efc0c15 | 257 | { |
1e3b8b07 | 258 | u_int i; |
8efc0c15 | 259 | |
5260325f | 260 | for (i = 0; keywords[i].name; i++) |
aa3378df | 261 | if (strcasecmp(cp, keywords[i].name) == 0) |
5260325f | 262 | return keywords[i].opcode; |
8efc0c15 | 263 | |
b7c70970 | 264 | error("%s: line %d: Bad configuration option: %s", |
265 | filename, linenum, cp); | |
5260325f | 266 | return oBadOption; |
8efc0c15 | 267 | } |
268 | ||
aa3378df | 269 | /* |
270 | * Processes a single option line as used in the configuration files. This | |
271 | * only sets those values that have not already been set. | |
272 | */ | |
d718e75d | 273 | #define WHITESPACE " \t\r\n" |
8efc0c15 | 274 | |
e7c0f9d5 | 275 | int |
276 | process_config_line(Options *options, const char *host, | |
5260325f | 277 | char *line, const char *filename, int linenum, |
278 | int *activep) | |
8efc0c15 | 279 | { |
d718e75d | 280 | char buf[256], *s, **charptr, *endofnumber, *keyword, *arg; |
57112b5a | 281 | int opcode, *intptr, value; |
d718e75d | 282 | size_t len; |
57112b5a | 283 | u_short fwd_port, fwd_host_port; |
3a8aabf0 | 284 | char sfwd_host_port[6]; |
5260325f | 285 | |
204fde99 | 286 | /* Strip trailing whitespace */ |
287 | for(len = strlen(line) - 1; len > 0; len--) { | |
288 | if (strchr(WHITESPACE, line[len]) == NULL) | |
289 | break; | |
290 | line[len] = '\0'; | |
291 | } | |
292 | ||
704b1659 | 293 | s = line; |
294 | /* Get the keyword. (Each line is supposed to begin with a keyword). */ | |
295 | keyword = strdelim(&s); | |
296 | /* Ignore leading whitespace. */ | |
297 | if (*keyword == '\0') | |
298 | keyword = strdelim(&s); | |
42f11eb2 | 299 | if (keyword == NULL || !*keyword || *keyword == '\n' || *keyword == '#') |
5260325f | 300 | return 0; |
301 | ||
089fbbd2 | 302 | opcode = parse_token(keyword, filename, linenum); |
5260325f | 303 | |
304 | switch (opcode) { | |
305 | case oBadOption: | |
aa3378df | 306 | /* don't panic, but count bad options */ |
307 | return -1; | |
5260325f | 308 | /* NOTREACHED */ |
309 | case oForwardAgent: | |
310 | intptr = &options->forward_agent; | |
311 | parse_flag: | |
704b1659 | 312 | arg = strdelim(&s); |
089fbbd2 | 313 | if (!arg || *arg == '\0') |
5260325f | 314 | fatal("%.200s line %d: Missing yes/no argument.", filename, linenum); |
315 | value = 0; /* To avoid compiler warning... */ | |
089fbbd2 | 316 | if (strcmp(arg, "yes") == 0 || strcmp(arg, "true") == 0) |
5260325f | 317 | value = 1; |
089fbbd2 | 318 | else if (strcmp(arg, "no") == 0 || strcmp(arg, "false") == 0) |
5260325f | 319 | value = 0; |
320 | else | |
321 | fatal("%.200s line %d: Bad yes/no argument.", filename, linenum); | |
322 | if (*activep && *intptr == -1) | |
323 | *intptr = value; | |
324 | break; | |
325 | ||
326 | case oForwardX11: | |
327 | intptr = &options->forward_x11; | |
328 | goto parse_flag; | |
329 | ||
330 | case oGatewayPorts: | |
331 | intptr = &options->gateway_ports; | |
332 | goto parse_flag; | |
333 | ||
334 | case oUsePrivilegedPort: | |
335 | intptr = &options->use_privileged_port; | |
336 | goto parse_flag; | |
337 | ||
338 | case oRhostsAuthentication: | |
339 | intptr = &options->rhosts_authentication; | |
340 | goto parse_flag; | |
341 | ||
342 | case oPasswordAuthentication: | |
343 | intptr = &options->password_authentication; | |
344 | goto parse_flag; | |
345 | ||
94ec8c6b | 346 | case oKbdInteractiveAuthentication: |
347 | intptr = &options->kbd_interactive_authentication; | |
348 | goto parse_flag; | |
349 | ||
350 | case oKbdInteractiveDevices: | |
351 | charptr = &options->kbd_interactive_devices; | |
352 | goto parse_string; | |
353 | ||
fa08c86b | 354 | case oPubkeyAuthentication: |
355 | intptr = &options->pubkey_authentication; | |
1d1ffb87 | 356 | goto parse_flag; |
357 | ||
5260325f | 358 | case oRSAAuthentication: |
359 | intptr = &options->rsa_authentication; | |
360 | goto parse_flag; | |
361 | ||
362 | case oRhostsRSAAuthentication: | |
363 | intptr = &options->rhosts_rsa_authentication; | |
364 | goto parse_flag; | |
365 | ||
8002af61 | 366 | case oHostbasedAuthentication: |
367 | intptr = &options->hostbased_authentication; | |
368 | goto parse_flag; | |
369 | ||
d464095c | 370 | case oChallengeResponseAuthentication: |
5ba55ada | 371 | intptr = &options->challenge_response_authentication; |
5260325f | 372 | goto parse_flag; |
ced49be2 | 373 | #if defined(KRB4) || defined(KRB5) |
5260325f | 374 | case oKerberosAuthentication: |
375 | intptr = &options->kerberos_authentication; | |
376 | goto parse_flag; | |
ced49be2 | 377 | #endif |
378 | #if defined(AFS) || defined(KRB5) | |
5260325f | 379 | case oKerberosTgtPassing: |
380 | intptr = &options->kerberos_tgt_passing; | |
381 | goto parse_flag; | |
ced49be2 | 382 | #endif |
383 | #ifdef AFS | |
5260325f | 384 | case oAFSTokenPassing: |
385 | intptr = &options->afs_token_passing; | |
386 | goto parse_flag; | |
8efc0c15 | 387 | #endif |
5260325f | 388 | case oBatchMode: |
389 | intptr = &options->batch_mode; | |
390 | goto parse_flag; | |
391 | ||
392 | case oCheckHostIP: | |
393 | intptr = &options->check_host_ip; | |
394 | goto parse_flag; | |
395 | ||
21289cd0 | 396 | case oVerifyHostKeyDNS: |
397 | intptr = &options->verify_host_key_dns; | |
398 | goto parse_flag; | |
399 | ||
5260325f | 400 | case oStrictHostKeyChecking: |
401 | intptr = &options->strict_host_key_checking; | |
704b1659 | 402 | arg = strdelim(&s); |
089fbbd2 | 403 | if (!arg || *arg == '\0') |
c76c8819 | 404 | fatal("%.200s line %d: Missing yes/no/ask argument.", |
184eed6a | 405 | filename, linenum); |
5260325f | 406 | value = 0; /* To avoid compiler warning... */ |
089fbbd2 | 407 | if (strcmp(arg, "yes") == 0 || strcmp(arg, "true") == 0) |
5260325f | 408 | value = 1; |
089fbbd2 | 409 | else if (strcmp(arg, "no") == 0 || strcmp(arg, "false") == 0) |
5260325f | 410 | value = 0; |
089fbbd2 | 411 | else if (strcmp(arg, "ask") == 0) |
5260325f | 412 | value = 2; |
413 | else | |
414 | fatal("%.200s line %d: Bad yes/no/ask argument.", filename, linenum); | |
415 | if (*activep && *intptr == -1) | |
416 | *intptr = value; | |
417 | break; | |
418 | ||
419 | case oCompression: | |
420 | intptr = &options->compression; | |
421 | goto parse_flag; | |
422 | ||
423 | case oKeepAlives: | |
424 | intptr = &options->keepalives; | |
425 | goto parse_flag; | |
426 | ||
8bbc048a | 427 | case oNoHostAuthenticationForLocalhost: |
428 | intptr = &options->no_host_authentication_for_localhost; | |
429 | goto parse_flag; | |
430 | ||
5260325f | 431 | case oNumberOfPasswordPrompts: |
432 | intptr = &options->number_of_password_prompts; | |
433 | goto parse_int; | |
434 | ||
435 | case oCompressionLevel: | |
436 | intptr = &options->compression_level; | |
437 | goto parse_int; | |
438 | ||
ffd7b36b | 439 | case oRekeyLimit: |
440 | intptr = &options->rekey_limit; | |
441 | arg = strdelim(&s); | |
442 | if (!arg || *arg == '\0') | |
443 | fatal("%.200s line %d: Missing argument.", filename, linenum); | |
444 | if (arg[0] < '0' || arg[0] > '9') | |
445 | fatal("%.200s line %d: Bad number.", filename, linenum); | |
446 | value = strtol(arg, &endofnumber, 10); | |
447 | if (arg == endofnumber) | |
448 | fatal("%.200s line %d: Bad number.", filename, linenum); | |
449 | switch (toupper(*endofnumber)) { | |
450 | case 'K': | |
451 | value *= 1<<10; | |
452 | break; | |
453 | case 'M': | |
454 | value *= 1<<20; | |
455 | break; | |
456 | case 'G': | |
457 | value *= 1<<30; | |
458 | break; | |
459 | } | |
460 | if (*activep && *intptr == -1) | |
461 | *intptr = value; | |
462 | break; | |
463 | ||
5260325f | 464 | case oIdentityFile: |
704b1659 | 465 | arg = strdelim(&s); |
089fbbd2 | 466 | if (!arg || *arg == '\0') |
5260325f | 467 | fatal("%.200s line %d: Missing argument.", filename, linenum); |
468 | if (*activep) { | |
fa08c86b | 469 | intptr = &options->num_identity_files; |
a306f2dd | 470 | if (*intptr >= SSH_MAX_IDENTITY_FILES) |
5260325f | 471 | fatal("%.200s line %d: Too many identity files specified (max %d).", |
184eed6a | 472 | filename, linenum, SSH_MAX_IDENTITY_FILES); |
fa08c86b | 473 | charptr = &options->identity_files[*intptr]; |
089fbbd2 | 474 | *charptr = xstrdup(arg); |
a306f2dd | 475 | *intptr = *intptr + 1; |
5260325f | 476 | } |
477 | break; | |
478 | ||
fa649821 | 479 | case oXAuthLocation: |
480 | charptr=&options->xauth_location; | |
481 | goto parse_string; | |
482 | ||
5260325f | 483 | case oUser: |
484 | charptr = &options->user; | |
485 | parse_string: | |
704b1659 | 486 | arg = strdelim(&s); |
089fbbd2 | 487 | if (!arg || *arg == '\0') |
5260325f | 488 | fatal("%.200s line %d: Missing argument.", filename, linenum); |
489 | if (*activep && *charptr == NULL) | |
089fbbd2 | 490 | *charptr = xstrdup(arg); |
5260325f | 491 | break; |
492 | ||
493 | case oGlobalKnownHostsFile: | |
494 | charptr = &options->system_hostfile; | |
495 | goto parse_string; | |
496 | ||
497 | case oUserKnownHostsFile: | |
498 | charptr = &options->user_hostfile; | |
499 | goto parse_string; | |
500 | ||
a306f2dd | 501 | case oGlobalKnownHostsFile2: |
502 | charptr = &options->system_hostfile2; | |
503 | goto parse_string; | |
504 | ||
505 | case oUserKnownHostsFile2: | |
506 | charptr = &options->user_hostfile2; | |
507 | goto parse_string; | |
508 | ||
5260325f | 509 | case oHostName: |
510 | charptr = &options->hostname; | |
511 | goto parse_string; | |
512 | ||
8abcdba4 | 513 | case oHostKeyAlias: |
514 | charptr = &options->host_key_alias; | |
515 | goto parse_string; | |
516 | ||
cab80f75 | 517 | case oPreferredAuthentications: |
518 | charptr = &options->preferred_authentications; | |
519 | goto parse_string; | |
520 | ||
3435f5a6 | 521 | case oBindAddress: |
522 | charptr = &options->bind_address; | |
523 | goto parse_string; | |
524 | ||
eea098a3 | 525 | case oSmartcardDevice: |
9ff6f66f | 526 | charptr = &options->smartcard_device; |
527 | goto parse_string; | |
eea098a3 | 528 | |
5260325f | 529 | case oProxyCommand: |
530 | charptr = &options->proxy_command; | |
d718e75d | 531 | len = strspn(s, WHITESPACE "="); |
5260325f | 532 | if (*activep && *charptr == NULL) |
d718e75d | 533 | *charptr = xstrdup(s + len); |
5260325f | 534 | return 0; |
535 | ||
536 | case oPort: | |
537 | intptr = &options->port; | |
538 | parse_int: | |
704b1659 | 539 | arg = strdelim(&s); |
089fbbd2 | 540 | if (!arg || *arg == '\0') |
5260325f | 541 | fatal("%.200s line %d: Missing argument.", filename, linenum); |
089fbbd2 | 542 | if (arg[0] < '0' || arg[0] > '9') |
5260325f | 543 | fatal("%.200s line %d: Bad number.", filename, linenum); |
aa3378df | 544 | |
545 | /* Octal, decimal, or hex format? */ | |
089fbbd2 | 546 | value = strtol(arg, &endofnumber, 0); |
547 | if (arg == endofnumber) | |
aa3378df | 548 | fatal("%.200s line %d: Bad number.", filename, linenum); |
5260325f | 549 | if (*activep && *intptr == -1) |
550 | *intptr = value; | |
551 | break; | |
552 | ||
553 | case oConnectionAttempts: | |
554 | intptr = &options->connection_attempts; | |
555 | goto parse_int; | |
556 | ||
557 | case oCipher: | |
558 | intptr = &options->cipher; | |
704b1659 | 559 | arg = strdelim(&s); |
089fbbd2 | 560 | if (!arg || *arg == '\0') |
71276795 | 561 | fatal("%.200s line %d: Missing argument.", filename, linenum); |
089fbbd2 | 562 | value = cipher_number(arg); |
5260325f | 563 | if (value == -1) |
564 | fatal("%.200s line %d: Bad cipher '%s'.", | |
184eed6a | 565 | filename, linenum, arg ? arg : "<NONE>"); |
5260325f | 566 | if (*activep && *intptr == -1) |
567 | *intptr = value; | |
568 | break; | |
569 | ||
a8be9f80 | 570 | case oCiphers: |
704b1659 | 571 | arg = strdelim(&s); |
089fbbd2 | 572 | if (!arg || *arg == '\0') |
71276795 | 573 | fatal("%.200s line %d: Missing argument.", filename, linenum); |
089fbbd2 | 574 | if (!ciphers_valid(arg)) |
d0c832f3 | 575 | fatal("%.200s line %d: Bad SSH2 cipher spec '%s'.", |
184eed6a | 576 | filename, linenum, arg ? arg : "<NONE>"); |
a8be9f80 | 577 | if (*activep && options->ciphers == NULL) |
089fbbd2 | 578 | options->ciphers = xstrdup(arg); |
a8be9f80 | 579 | break; |
580 | ||
b2552997 | 581 | case oMacs: |
582 | arg = strdelim(&s); | |
583 | if (!arg || *arg == '\0') | |
584 | fatal("%.200s line %d: Missing argument.", filename, linenum); | |
585 | if (!mac_valid(arg)) | |
586 | fatal("%.200s line %d: Bad SSH2 Mac spec '%s'.", | |
184eed6a | 587 | filename, linenum, arg ? arg : "<NONE>"); |
b2552997 | 588 | if (*activep && options->macs == NULL) |
589 | options->macs = xstrdup(arg); | |
590 | break; | |
591 | ||
e961a8f9 | 592 | case oHostKeyAlgorithms: |
593 | arg = strdelim(&s); | |
594 | if (!arg || *arg == '\0') | |
595 | fatal("%.200s line %d: Missing argument.", filename, linenum); | |
596 | if (!key_names_valid2(arg)) | |
597 | fatal("%.200s line %d: Bad protocol 2 host key algorithms '%s'.", | |
184eed6a | 598 | filename, linenum, arg ? arg : "<NONE>"); |
e961a8f9 | 599 | if (*activep && options->hostkeyalgorithms == NULL) |
600 | options->hostkeyalgorithms = xstrdup(arg); | |
601 | break; | |
602 | ||
a8be9f80 | 603 | case oProtocol: |
604 | intptr = &options->protocol; | |
704b1659 | 605 | arg = strdelim(&s); |
089fbbd2 | 606 | if (!arg || *arg == '\0') |
71276795 | 607 | fatal("%.200s line %d: Missing argument.", filename, linenum); |
089fbbd2 | 608 | value = proto_spec(arg); |
a8be9f80 | 609 | if (value == SSH_PROTO_UNKNOWN) |
610 | fatal("%.200s line %d: Bad protocol spec '%s'.", | |
184eed6a | 611 | filename, linenum, arg ? arg : "<NONE>"); |
a8be9f80 | 612 | if (*activep && *intptr == SSH_PROTO_UNKNOWN) |
613 | *intptr = value; | |
614 | break; | |
615 | ||
5260325f | 616 | case oLogLevel: |
617 | intptr = (int *) &options->log_level; | |
704b1659 | 618 | arg = strdelim(&s); |
089fbbd2 | 619 | value = log_level_number(arg); |
5eaf8578 | 620 | if (value == SYSLOG_LEVEL_NOT_SET) |
54b974dc | 621 | fatal("%.200s line %d: unsupported log level '%s'", |
184eed6a | 622 | filename, linenum, arg ? arg : "<NONE>"); |
5eaf8578 | 623 | if (*activep && (LogLevel) *intptr == SYSLOG_LEVEL_NOT_SET) |
5260325f | 624 | *intptr = (LogLevel) value; |
625 | break; | |
626 | ||
5260325f | 627 | case oLocalForward: |
3a8aabf0 | 628 | case oRemoteForward: |
704b1659 | 629 | arg = strdelim(&s); |
089fbbd2 | 630 | if (!arg || *arg == '\0') |
3a8aabf0 | 631 | fatal("%.200s line %d: Missing port argument.", |
632 | filename, linenum); | |
633 | if ((fwd_port = a2port(arg)) == 0) | |
634 | fatal("%.200s line %d: Bad listen port.", | |
635 | filename, linenum); | |
704b1659 | 636 | arg = strdelim(&s); |
089fbbd2 | 637 | if (!arg || *arg == '\0') |
5260325f | 638 | fatal("%.200s line %d: Missing second argument.", |
3a8aabf0 | 639 | filename, linenum); |
640 | if (sscanf(arg, "%255[^:]:%5[0-9]", buf, sfwd_host_port) != 2 && | |
641 | sscanf(arg, "%255[^/]/%5[0-9]", buf, sfwd_host_port) != 2) | |
642 | fatal("%.200s line %d: Bad forwarding specification.", | |
643 | filename, linenum); | |
644 | if ((fwd_host_port = a2port(sfwd_host_port)) == 0) | |
645 | fatal("%.200s line %d: Bad forwarding port.", | |
646 | filename, linenum); | |
647 | if (*activep) { | |
648 | if (opcode == oLocalForward) | |
649 | add_local_forward(options, fwd_port, buf, | |
650 | fwd_host_port); | |
651 | else if (opcode == oRemoteForward) | |
652 | add_remote_forward(options, fwd_port, buf, | |
653 | fwd_host_port); | |
654 | } | |
5260325f | 655 | break; |
656 | ||
0490e609 | 657 | case oDynamicForward: |
658 | arg = strdelim(&s); | |
659 | if (!arg || *arg == '\0') | |
660 | fatal("%.200s line %d: Missing port argument.", | |
661 | filename, linenum); | |
2d2a2c65 | 662 | fwd_port = a2port(arg); |
663 | if (fwd_port == 0) | |
0490e609 | 664 | fatal("%.200s line %d: Badly formatted port number.", |
665 | filename, linenum); | |
14e4a15f | 666 | if (*activep) |
667 | add_local_forward(options, fwd_port, "socks4", 0); | |
8002af61 | 668 | break; |
0490e609 | 669 | |
e1c5bfaf | 670 | case oClearAllForwardings: |
671 | intptr = &options->clear_forwardings; | |
672 | goto parse_flag; | |
673 | ||
5260325f | 674 | case oHost: |
675 | *activep = 0; | |
704b1659 | 676 | while ((arg = strdelim(&s)) != NULL && *arg != '\0') |
089fbbd2 | 677 | if (match_pattern(host, arg)) { |
678 | debug("Applying options for %.100s", arg); | |
5260325f | 679 | *activep = 1; |
680 | break; | |
681 | } | |
704b1659 | 682 | /* Avoid garbage check below, as strdelim is done. */ |
5260325f | 683 | return 0; |
684 | ||
685 | case oEscapeChar: | |
686 | intptr = &options->escape_char; | |
704b1659 | 687 | arg = strdelim(&s); |
089fbbd2 | 688 | if (!arg || *arg == '\0') |
5260325f | 689 | fatal("%.200s line %d: Missing argument.", filename, linenum); |
089fbbd2 | 690 | if (arg[0] == '^' && arg[2] == 0 && |
1e3b8b07 | 691 | (u_char) arg[1] >= 64 && (u_char) arg[1] < 128) |
692 | value = (u_char) arg[1] & 31; | |
089fbbd2 | 693 | else if (strlen(arg) == 1) |
1e3b8b07 | 694 | value = (u_char) arg[0]; |
089fbbd2 | 695 | else if (strcmp(arg, "none") == 0) |
4bf9c10e | 696 | value = SSH_ESCAPECHAR_NONE; |
5260325f | 697 | else { |
698 | fatal("%.200s line %d: Bad escape character.", | |
184eed6a | 699 | filename, linenum); |
5260325f | 700 | /* NOTREACHED */ |
701 | value = 0; /* Avoid compiler warning. */ | |
702 | } | |
703 | if (*activep && *intptr == -1) | |
704 | *intptr = value; | |
705 | break; | |
706 | ||
cc46e2ee | 707 | case oEnableSSHKeysign: |
708 | intptr = &options->enable_ssh_keysign; | |
709 | goto parse_flag; | |
710 | ||
80fcb74e | 711 | case oDeprecated: |
4feae93d | 712 | debug("%s line %d: Deprecated option \"%s\"", |
80fcb74e | 713 | filename, linenum, keyword); |
4feae93d | 714 | return 0; |
80fcb74e | 715 | |
5260325f | 716 | default: |
717 | fatal("process_config_line: Unimplemented opcode %d", opcode); | |
718 | } | |
719 | ||
720 | /* Check that there is no garbage at end of line. */ | |
42f11eb2 | 721 | if ((arg = strdelim(&s)) != NULL && *arg != '\0') { |
089fbbd2 | 722 | fatal("%.200s line %d: garbage at end of line; \"%.200s\".", |
184eed6a | 723 | filename, linenum, arg); |
089fbbd2 | 724 | } |
5260325f | 725 | return 0; |
8efc0c15 | 726 | } |
727 | ||
728 | ||
aa3378df | 729 | /* |
730 | * Reads the config file and modifies the options accordingly. Options | |
731 | * should already be initialized before this call. This never returns if | |
93111dfa | 732 | * there is an error. If the file does not exist, this returns 0. |
aa3378df | 733 | */ |
8efc0c15 | 734 | |
93111dfa | 735 | int |
5260325f | 736 | read_config_file(const char *filename, const char *host, Options *options) |
8efc0c15 | 737 | { |
5260325f | 738 | FILE *f; |
739 | char line[1024]; | |
740 | int active, linenum; | |
741 | int bad_options = 0; | |
742 | ||
743 | /* Open the file. */ | |
744 | f = fopen(filename, "r"); | |
745 | if (!f) | |
93111dfa | 746 | return 0; |
5260325f | 747 | |
748 | debug("Reading configuration data %.200s", filename); | |
749 | ||
aa3378df | 750 | /* |
751 | * Mark that we are now processing the options. This flag is turned | |
752 | * on/off by Host specifications. | |
753 | */ | |
5260325f | 754 | active = 1; |
755 | linenum = 0; | |
756 | while (fgets(line, sizeof(line), f)) { | |
757 | /* Update line number counter. */ | |
758 | linenum++; | |
759 | if (process_config_line(options, host, line, filename, linenum, &active) != 0) | |
760 | bad_options++; | |
761 | } | |
762 | fclose(f); | |
763 | if (bad_options > 0) | |
54b974dc | 764 | fatal("%s: terminating, %d bad configuration options", |
184eed6a | 765 | filename, bad_options); |
93111dfa | 766 | return 1; |
8efc0c15 | 767 | } |
768 | ||
aa3378df | 769 | /* |
770 | * Initializes options to special values that indicate that they have not yet | |
771 | * been set. Read_config_file will only set options with this value. Options | |
772 | * are processed in the following order: command line, user config file, | |
773 | * system config file. Last, fill_default_options is called. | |
774 | */ | |
8efc0c15 | 775 | |
6ae2364d | 776 | void |
5260325f | 777 | initialize_options(Options * options) |
8efc0c15 | 778 | { |
5260325f | 779 | memset(options, 'X', sizeof(*options)); |
780 | options->forward_agent = -1; | |
781 | options->forward_x11 = -1; | |
fa649821 | 782 | options->xauth_location = NULL; |
5260325f | 783 | options->gateway_ports = -1; |
784 | options->use_privileged_port = -1; | |
785 | options->rhosts_authentication = -1; | |
786 | options->rsa_authentication = -1; | |
fa08c86b | 787 | options->pubkey_authentication = -1; |
5ba55ada | 788 | options->challenge_response_authentication = -1; |
ced49be2 | 789 | #if defined(KRB4) || defined(KRB5) |
5260325f | 790 | options->kerberos_authentication = -1; |
8efc0c15 | 791 | #endif |
ced49be2 | 792 | #if defined(AFS) || defined(KRB5) |
5260325f | 793 | options->kerberos_tgt_passing = -1; |
ced49be2 | 794 | #endif |
795 | #ifdef AFS | |
5260325f | 796 | options->afs_token_passing = -1; |
8efc0c15 | 797 | #endif |
5260325f | 798 | options->password_authentication = -1; |
94ec8c6b | 799 | options->kbd_interactive_authentication = -1; |
800 | options->kbd_interactive_devices = NULL; | |
5260325f | 801 | options->rhosts_rsa_authentication = -1; |
8002af61 | 802 | options->hostbased_authentication = -1; |
5260325f | 803 | options->batch_mode = -1; |
804 | options->check_host_ip = -1; | |
805 | options->strict_host_key_checking = -1; | |
806 | options->compression = -1; | |
807 | options->keepalives = -1; | |
808 | options->compression_level = -1; | |
809 | options->port = -1; | |
810 | options->connection_attempts = -1; | |
811 | options->number_of_password_prompts = -1; | |
812 | options->cipher = -1; | |
a8be9f80 | 813 | options->ciphers = NULL; |
b2552997 | 814 | options->macs = NULL; |
e961a8f9 | 815 | options->hostkeyalgorithms = NULL; |
a8be9f80 | 816 | options->protocol = SSH_PROTO_UNKNOWN; |
5260325f | 817 | options->num_identity_files = 0; |
818 | options->hostname = NULL; | |
8abcdba4 | 819 | options->host_key_alias = NULL; |
5260325f | 820 | options->proxy_command = NULL; |
821 | options->user = NULL; | |
822 | options->escape_char = -1; | |
823 | options->system_hostfile = NULL; | |
824 | options->user_hostfile = NULL; | |
a306f2dd | 825 | options->system_hostfile2 = NULL; |
826 | options->user_hostfile2 = NULL; | |
5260325f | 827 | options->num_local_forwards = 0; |
828 | options->num_remote_forwards = 0; | |
e1c5bfaf | 829 | options->clear_forwardings = -1; |
5eaf8578 | 830 | options->log_level = SYSLOG_LEVEL_NOT_SET; |
cab80f75 | 831 | options->preferred_authentications = NULL; |
3435f5a6 | 832 | options->bind_address = NULL; |
9ff6f66f | 833 | options->smartcard_device = NULL; |
cc46e2ee | 834 | options->enable_ssh_keysign = - 1; |
8bbc048a | 835 | options->no_host_authentication_for_localhost = - 1; |
ffd7b36b | 836 | options->rekey_limit = - 1; |
21289cd0 | 837 | options->verify_host_key_dns = -1; |
8efc0c15 | 838 | } |
839 | ||
aa3378df | 840 | /* |
841 | * Called after processing other sources of option data, this fills those | |
842 | * options for which no value has been specified with their default values. | |
843 | */ | |
8efc0c15 | 844 | |
6ae2364d | 845 | void |
5260325f | 846 | fill_default_options(Options * options) |
8efc0c15 | 847 | { |
d2c46e77 | 848 | int len; |
849 | ||
5260325f | 850 | if (options->forward_agent == -1) |
71276795 | 851 | options->forward_agent = 0; |
5260325f | 852 | if (options->forward_x11 == -1) |
c8d54615 | 853 | options->forward_x11 = 0; |
fa649821 | 854 | if (options->xauth_location == NULL) |
fd9ede94 | 855 | options->xauth_location = _PATH_XAUTH; |
5260325f | 856 | if (options->gateway_ports == -1) |
857 | options->gateway_ports = 0; | |
858 | if (options->use_privileged_port == -1) | |
d5ebca2b | 859 | options->use_privileged_port = 0; |
5260325f | 860 | if (options->rhosts_authentication == -1) |
4b3d23b4 | 861 | options->rhosts_authentication = 0; |
5260325f | 862 | if (options->rsa_authentication == -1) |
863 | options->rsa_authentication = 1; | |
fa08c86b | 864 | if (options->pubkey_authentication == -1) |
865 | options->pubkey_authentication = 1; | |
5ba55ada | 866 | if (options->challenge_response_authentication == -1) |
10a2cbef | 867 | options->challenge_response_authentication = 1; |
ced49be2 | 868 | #if defined(KRB4) || defined(KRB5) |
5260325f | 869 | if (options->kerberos_authentication == -1) |
870 | options->kerberos_authentication = 1; | |
ced49be2 | 871 | #endif |
872 | #if defined(AFS) || defined(KRB5) | |
5260325f | 873 | if (options->kerberos_tgt_passing == -1) |
874 | options->kerberos_tgt_passing = 1; | |
ced49be2 | 875 | #endif |
876 | #ifdef AFS | |
5260325f | 877 | if (options->afs_token_passing == -1) |
878 | options->afs_token_passing = 1; | |
ced49be2 | 879 | #endif |
5260325f | 880 | if (options->password_authentication == -1) |
881 | options->password_authentication = 1; | |
94ec8c6b | 882 | if (options->kbd_interactive_authentication == -1) |
d464095c | 883 | options->kbd_interactive_authentication = 1; |
5260325f | 884 | if (options->rhosts_rsa_authentication == -1) |
4b3d23b4 | 885 | options->rhosts_rsa_authentication = 0; |
8002af61 | 886 | if (options->hostbased_authentication == -1) |
887 | options->hostbased_authentication = 0; | |
5260325f | 888 | if (options->batch_mode == -1) |
889 | options->batch_mode = 0; | |
890 | if (options->check_host_ip == -1) | |
891 | options->check_host_ip = 1; | |
892 | if (options->strict_host_key_checking == -1) | |
893 | options->strict_host_key_checking = 2; /* 2 is default */ | |
894 | if (options->compression == -1) | |
895 | options->compression = 0; | |
896 | if (options->keepalives == -1) | |
897 | options->keepalives = 1; | |
898 | if (options->compression_level == -1) | |
899 | options->compression_level = 6; | |
900 | if (options->port == -1) | |
901 | options->port = 0; /* Filled in ssh_connect. */ | |
902 | if (options->connection_attempts == -1) | |
ce773142 | 903 | options->connection_attempts = 1; |
5260325f | 904 | if (options->number_of_password_prompts == -1) |
905 | options->number_of_password_prompts = 3; | |
906 | /* Selected in ssh_login(). */ | |
907 | if (options->cipher == -1) | |
908 | options->cipher = SSH_CIPHER_NOT_SET; | |
d0c832f3 | 909 | /* options->ciphers, default set in myproposals.h */ |
b2552997 | 910 | /* options->macs, default set in myproposals.h */ |
e961a8f9 | 911 | /* options->hostkeyalgorithms, default set in myproposals.h */ |
a8be9f80 | 912 | if (options->protocol == SSH_PROTO_UNKNOWN) |
3e587cc3 | 913 | options->protocol = SSH_PROTO_1|SSH_PROTO_2; |
5260325f | 914 | if (options->num_identity_files == 0) { |
fa08c86b | 915 | if (options->protocol & SSH_PROTO_1) { |
d2c46e77 | 916 | len = 2 + strlen(_PATH_SSH_CLIENT_IDENTITY) + 1; |
fa08c86b | 917 | options->identity_files[options->num_identity_files] = |
d2c46e77 | 918 | xmalloc(len); |
919 | snprintf(options->identity_files[options->num_identity_files++], | |
920 | len, "~/%.100s", _PATH_SSH_CLIENT_IDENTITY); | |
fa08c86b | 921 | } |
922 | if (options->protocol & SSH_PROTO_2) { | |
ec63b02d | 923 | len = 2 + strlen(_PATH_SSH_CLIENT_ID_RSA) + 1; |
924 | options->identity_files[options->num_identity_files] = | |
925 | xmalloc(len); | |
926 | snprintf(options->identity_files[options->num_identity_files++], | |
927 | len, "~/%.100s", _PATH_SSH_CLIENT_ID_RSA); | |
928 | ||
d2c46e77 | 929 | len = 2 + strlen(_PATH_SSH_CLIENT_ID_DSA) + 1; |
fa08c86b | 930 | options->identity_files[options->num_identity_files] = |
d2c46e77 | 931 | xmalloc(len); |
932 | snprintf(options->identity_files[options->num_identity_files++], | |
933 | len, "~/%.100s", _PATH_SSH_CLIENT_ID_DSA); | |
fa08c86b | 934 | } |
a306f2dd | 935 | } |
5260325f | 936 | if (options->escape_char == -1) |
937 | options->escape_char = '~'; | |
938 | if (options->system_hostfile == NULL) | |
42f11eb2 | 939 | options->system_hostfile = _PATH_SSH_SYSTEM_HOSTFILE; |
5260325f | 940 | if (options->user_hostfile == NULL) |
42f11eb2 | 941 | options->user_hostfile = _PATH_SSH_USER_HOSTFILE; |
a306f2dd | 942 | if (options->system_hostfile2 == NULL) |
42f11eb2 | 943 | options->system_hostfile2 = _PATH_SSH_SYSTEM_HOSTFILE2; |
a306f2dd | 944 | if (options->user_hostfile2 == NULL) |
42f11eb2 | 945 | options->user_hostfile2 = _PATH_SSH_USER_HOSTFILE2; |
5eaf8578 | 946 | if (options->log_level == SYSLOG_LEVEL_NOT_SET) |
59c97189 | 947 | options->log_level = SYSLOG_LEVEL_INFO; |
e1c5bfaf | 948 | if (options->clear_forwardings == 1) |
949 | clear_forwardings(options); | |
8bbc048a | 950 | if (options->no_host_authentication_for_localhost == - 1) |
951 | options->no_host_authentication_for_localhost = 0; | |
cc46e2ee | 952 | if (options->enable_ssh_keysign == -1) |
953 | options->enable_ssh_keysign = 0; | |
ffd7b36b | 954 | if (options->rekey_limit == -1) |
955 | options->rekey_limit = 0; | |
21289cd0 | 956 | if (options->verify_host_key_dns == -1) |
957 | options->verify_host_key_dns = 0; | |
5260325f | 958 | /* options->proxy_command should not be set by default */ |
959 | /* options->user will be set in the main program if appropriate */ | |
960 | /* options->hostname will be set in the main program if appropriate */ | |
8abcdba4 | 961 | /* options->host_key_alias should not be set by default */ |
cab80f75 | 962 | /* options->preferred_authentications will be set in ssh */ |
8efc0c15 | 963 | } |