Annotation of src/usr.bin/ssh/readconf.c, Revision 1.26
1.1 deraadt 1: /*
1.26 ! markus 2: *
1.18 deraadt 3: * readconf.c
1.26 ! markus 4: *
1.18 deraadt 5: * Author: Tatu Ylonen <ylo@cs.hut.fi>
1.26 ! markus 6: *
1.18 deraadt 7: * Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
8: * All rights reserved
1.26 ! markus 9: *
1.18 deraadt 10: * Created: Sat Apr 22 00:03:10 1995 ylo
1.26 ! markus 11: *
1.18 deraadt 12: * Functions for reading the configuration files.
1.26 ! markus 13: *
1.18 deraadt 14: */
1.1 deraadt 15:
16: #include "includes.h"
1.26 ! markus 17: RCSID("$Id: readconf.c,v 1.25 2000/04/12 07:45:44 markus Exp $");
1.1 deraadt 18:
19: #include "ssh.h"
20: #include "cipher.h"
21: #include "readconf.h"
1.24 markus 22: #include "match.h"
1.1 deraadt 23: #include "xmalloc.h"
1.25 markus 24: #include "compat.h"
1.1 deraadt 25:
26: /* Format of the configuration file:
27:
28: # Configuration data is parsed as follows:
29: # 1. command line options
30: # 2. user-specific file
31: # 3. system-wide file
32: # Any configuration value is only changed the first time it is set.
33: # Thus, host-specific definitions should be at the beginning of the
34: # configuration file, and defaults at the end.
35:
36: # Host-specific declarations. These may override anything above. A single
37: # host may match multiple declarations; these are processed in the order
38: # that they are given in.
39:
40: Host *.ngs.fi ngs.fi
41: FallBackToRsh no
42:
43: Host fake.com
44: HostName another.host.name.real.org
45: User blaah
46: Port 34289
47: ForwardX11 no
48: ForwardAgent no
49:
50: Host books.com
51: RemoteForward 9999 shadows.cs.hut.fi:9999
52: Cipher 3des
53:
54: Host fascist.blob.com
55: Port 23123
56: User tylonen
57: RhostsAuthentication no
58: PasswordAuthentication no
59:
60: Host puukko.hut.fi
61: User t35124p
62: ProxyCommand ssh-proxy %h %p
63:
64: Host *.fr
65: UseRsh yes
66:
67: Host *.su
68: Cipher none
69: PasswordAuthentication no
70:
71: # Defaults for various options
72: Host *
73: ForwardAgent no
74: ForwardX11 yes
75: RhostsAuthentication yes
76: PasswordAuthentication yes
77: RSAAuthentication yes
78: RhostsRSAAuthentication yes
79: FallBackToRsh no
80: UseRsh no
81: StrictHostKeyChecking yes
82: KeepAlives no
83: IdentityFile ~/.ssh/identity
84: Port 22
85: EscapeChar ~
86:
87: */
88:
89: /* Keyword tokens. */
90:
1.17 markus 91: typedef enum {
92: oBadOption,
93: oForwardAgent, oForwardX11, oGatewayPorts, oRhostsAuthentication,
94: oPasswordAuthentication, oRSAAuthentication, oFallBackToRsh, oUseRsh,
95: oSkeyAuthentication,
1.1 deraadt 96: #ifdef KRB4
1.17 markus 97: oKerberosAuthentication,
1.1 deraadt 98: #endif /* KRB4 */
99: #ifdef AFS
1.17 markus 100: oKerberosTgtPassing, oAFSTokenPassing,
1.1 deraadt 101: #endif
1.17 markus 102: oIdentityFile, oHostName, oPort, oCipher, oRemoteForward, oLocalForward,
103: oUser, oHost, oEscapeChar, oRhostsRSAAuthentication, oProxyCommand,
104: oGlobalKnownHostsFile, oUserKnownHostsFile, oConnectionAttempts,
105: oBatchMode, oCheckHostIP, oStrictHostKeyChecking, oCompression,
106: oCompressionLevel, oKeepAlives, oNumberOfPasswordPrompts, oTISAuthentication,
1.25 markus 107: oUsePrivilegedPort, oLogLevel, oCiphers, oProtocol
1.1 deraadt 108: } OpCodes;
109:
110: /* Textual representations of the tokens. */
111:
1.17 markus 112: static struct {
113: const char *name;
114: OpCodes opcode;
115: } keywords[] = {
116: { "forwardagent", oForwardAgent },
117: { "forwardx11", oForwardX11 },
118: { "gatewayports", oGatewayPorts },
119: { "useprivilegedport", oUsePrivilegedPort },
120: { "rhostsauthentication", oRhostsAuthentication },
121: { "passwordauthentication", oPasswordAuthentication },
122: { "rsaauthentication", oRSAAuthentication },
123: { "skeyauthentication", oSkeyAuthentication },
1.1 deraadt 124: #ifdef KRB4
1.17 markus 125: { "kerberosauthentication", oKerberosAuthentication },
1.1 deraadt 126: #endif /* KRB4 */
1.5 dugsong 127: #ifdef AFS
1.17 markus 128: { "kerberostgtpassing", oKerberosTgtPassing },
129: { "afstokenpassing", oAFSTokenPassing },
1.1 deraadt 130: #endif
1.17 markus 131: { "fallbacktorsh", oFallBackToRsh },
132: { "usersh", oUseRsh },
133: { "identityfile", oIdentityFile },
134: { "hostname", oHostName },
135: { "proxycommand", oProxyCommand },
136: { "port", oPort },
137: { "cipher", oCipher },
1.25 markus 138: { "ciphers", oCiphers },
139: { "protocol", oProtocol },
1.17 markus 140: { "remoteforward", oRemoteForward },
141: { "localforward", oLocalForward },
142: { "user", oUser },
143: { "host", oHost },
144: { "escapechar", oEscapeChar },
145: { "rhostsrsaauthentication", oRhostsRSAAuthentication },
146: { "globalknownhostsfile", oGlobalKnownHostsFile },
147: { "userknownhostsfile", oUserKnownHostsFile },
148: { "connectionattempts", oConnectionAttempts },
149: { "batchmode", oBatchMode },
150: { "checkhostip", oCheckHostIP },
151: { "stricthostkeychecking", oStrictHostKeyChecking },
152: { "compression", oCompression },
153: { "compressionlevel", oCompressionLevel },
154: { "keepalive", oKeepAlives },
155: { "numberofpasswordprompts", oNumberOfPasswordPrompts },
156: { "tisauthentication", oTISAuthentication },
157: { "loglevel", oLogLevel },
158: { NULL, 0 }
1.13 markus 159: };
160:
1.1 deraadt 161: /* Characters considered whitespace in strtok calls. */
162: #define WHITESPACE " \t\r\n"
163:
164:
1.19 markus 165: /*
166: * Adds a local TCP/IP port forward to options. Never returns if there is an
167: * error.
168: */
1.1 deraadt 169:
1.26 ! markus 170: void
1.22 markus 171: add_local_forward(Options *options, u_short port, const char *host,
172: u_short host_port)
1.1 deraadt 173: {
1.17 markus 174: Forward *fwd;
175: extern uid_t original_real_uid;
176: if (port < IPPORT_RESERVED && original_real_uid != 0)
177: fatal("Privileged ports can only be forwarded by root.\n");
178: if (options->num_local_forwards >= SSH_MAX_FORWARDS_PER_DIRECTION)
179: fatal("Too many local forwards (max %d).", SSH_MAX_FORWARDS_PER_DIRECTION);
180: fwd = &options->local_forwards[options->num_local_forwards++];
181: fwd->port = port;
182: fwd->host = xstrdup(host);
183: fwd->host_port = host_port;
1.1 deraadt 184: }
185:
1.19 markus 186: /*
187: * Adds a remote TCP/IP port forward to options. Never returns if there is
188: * an error.
189: */
1.1 deraadt 190:
1.26 ! markus 191: void
1.22 markus 192: add_remote_forward(Options *options, u_short port, const char *host,
193: u_short host_port)
1.1 deraadt 194: {
1.17 markus 195: Forward *fwd;
196: if (options->num_remote_forwards >= SSH_MAX_FORWARDS_PER_DIRECTION)
197: fatal("Too many remote forwards (max %d).",
198: SSH_MAX_FORWARDS_PER_DIRECTION);
199: fwd = &options->remote_forwards[options->num_remote_forwards++];
200: fwd->port = port;
201: fwd->host = xstrdup(host);
202: fwd->host_port = host_port;
1.1 deraadt 203: }
204:
1.19 markus 205: /*
206: * Returns the number of the token pointed to by cp of length len. Never
207: * returns if the token is not known.
208: */
1.1 deraadt 209:
1.26 ! markus 210: static OpCodes
1.17 markus 211: parse_token(const char *cp, const char *filename, int linenum)
1.1 deraadt 212: {
1.17 markus 213: unsigned int i;
1.1 deraadt 214:
1.17 markus 215: for (i = 0; keywords[i].name; i++)
1.20 markus 216: if (strcasecmp(cp, keywords[i].name) == 0)
1.17 markus 217: return keywords[i].opcode;
218:
219: fprintf(stderr, "%s: line %d: Bad configuration option: %s\n",
220: filename, linenum, cp);
221: return oBadOption;
1.1 deraadt 222: }
223:
1.19 markus 224: /*
225: * Processes a single option line as used in the configuration files. This
226: * only sets those values that have not already been set.
227: */
1.1 deraadt 228:
1.14 markus 229: int
230: process_config_line(Options *options, const char *host,
1.17 markus 231: char *line, const char *filename, int linenum,
232: int *activep)
1.1 deraadt 233: {
1.21 markus 234: char buf[256], *cp, *string, **charptr, *cp2;
1.22 markus 235: int opcode, *intptr, value;
236: u_short fwd_port, fwd_host_port;
1.1 deraadt 237:
1.17 markus 238: /* Skip leading whitespace. */
239: cp = line + strspn(line, WHITESPACE);
240: if (!*cp || *cp == '\n' || *cp == '#')
241: return 0;
242:
1.19 markus 243: /* Get the keyword. (Each line is supposed to begin with a keyword). */
1.17 markus 244: cp = strtok(cp, WHITESPACE);
245: opcode = parse_token(cp, filename, linenum);
246:
247: switch (opcode) {
248: case oBadOption:
1.19 markus 249: /* don't panic, but count bad options */
250: return -1;
1.17 markus 251: /* NOTREACHED */
252: case oForwardAgent:
253: intptr = &options->forward_agent;
254: parse_flag:
255: cp = strtok(NULL, WHITESPACE);
256: if (!cp)
257: fatal("%.200s line %d: Missing yes/no argument.", filename, linenum);
258: value = 0; /* To avoid compiler warning... */
259: if (strcmp(cp, "yes") == 0 || strcmp(cp, "true") == 0)
260: value = 1;
261: else if (strcmp(cp, "no") == 0 || strcmp(cp, "false") == 0)
262: value = 0;
263: else
264: fatal("%.200s line %d: Bad yes/no argument.", filename, linenum);
265: if (*activep && *intptr == -1)
266: *intptr = value;
267: break;
268:
269: case oForwardX11:
270: intptr = &options->forward_x11;
271: goto parse_flag;
272:
273: case oGatewayPorts:
274: intptr = &options->gateway_ports;
275: goto parse_flag;
276:
277: case oUsePrivilegedPort:
278: intptr = &options->use_privileged_port;
279: goto parse_flag;
280:
281: case oRhostsAuthentication:
282: intptr = &options->rhosts_authentication;
283: goto parse_flag;
284:
285: case oPasswordAuthentication:
286: intptr = &options->password_authentication;
287: goto parse_flag;
288:
289: case oRSAAuthentication:
290: intptr = &options->rsa_authentication;
291: goto parse_flag;
292:
293: case oRhostsRSAAuthentication:
294: intptr = &options->rhosts_rsa_authentication;
295: goto parse_flag;
296:
297: case oTISAuthentication:
298: /* fallthrough, there is no difference on the client side */
299: case oSkeyAuthentication:
300: intptr = &options->skey_authentication;
301: goto parse_flag;
1.16 markus 302:
1.1 deraadt 303: #ifdef KRB4
1.17 markus 304: case oKerberosAuthentication:
305: intptr = &options->kerberos_authentication;
306: goto parse_flag;
1.1 deraadt 307: #endif /* KRB4 */
308:
1.5 dugsong 309: #ifdef AFS
1.17 markus 310: case oKerberosTgtPassing:
311: intptr = &options->kerberos_tgt_passing;
312: goto parse_flag;
313:
314: case oAFSTokenPassing:
315: intptr = &options->afs_token_passing;
316: goto parse_flag;
1.1 deraadt 317: #endif
1.17 markus 318:
319: case oFallBackToRsh:
320: intptr = &options->fallback_to_rsh;
321: goto parse_flag;
322:
323: case oUseRsh:
324: intptr = &options->use_rsh;
325: goto parse_flag;
326:
327: case oBatchMode:
328: intptr = &options->batch_mode;
329: goto parse_flag;
330:
331: case oCheckHostIP:
332: intptr = &options->check_host_ip;
333: goto parse_flag;
334:
335: case oStrictHostKeyChecking:
336: intptr = &options->strict_host_key_checking;
337: cp = strtok(NULL, WHITESPACE);
338: if (!cp)
339: fatal("%.200s line %d: Missing yes/no argument.",
340: filename, linenum);
341: value = 0; /* To avoid compiler warning... */
342: if (strcmp(cp, "yes") == 0 || strcmp(cp, "true") == 0)
343: value = 1;
344: else if (strcmp(cp, "no") == 0 || strcmp(cp, "false") == 0)
345: value = 0;
346: else if (strcmp(cp, "ask") == 0)
347: value = 2;
348: else
349: fatal("%.200s line %d: Bad yes/no/ask argument.", filename, linenum);
350: if (*activep && *intptr == -1)
351: *intptr = value;
352: break;
353:
354: case oCompression:
355: intptr = &options->compression;
356: goto parse_flag;
357:
358: case oKeepAlives:
359: intptr = &options->keepalives;
360: goto parse_flag;
361:
362: case oNumberOfPasswordPrompts:
363: intptr = &options->number_of_password_prompts;
364: goto parse_int;
365:
366: case oCompressionLevel:
367: intptr = &options->compression_level;
368: goto parse_int;
369:
370: case oIdentityFile:
371: cp = strtok(NULL, WHITESPACE);
372: if (!cp)
373: fatal("%.200s line %d: Missing argument.", filename, linenum);
374: if (*activep) {
375: if (options->num_identity_files >= SSH_MAX_IDENTITY_FILES)
376: fatal("%.200s line %d: Too many identity files specified (max %d).",
377: filename, linenum, SSH_MAX_IDENTITY_FILES);
378: options->identity_files[options->num_identity_files++] = xstrdup(cp);
379: }
380: break;
381:
382: case oUser:
383: charptr = &options->user;
384: parse_string:
385: cp = strtok(NULL, WHITESPACE);
386: if (!cp)
387: fatal("%.200s line %d: Missing argument.", filename, linenum);
388: if (*activep && *charptr == NULL)
389: *charptr = xstrdup(cp);
390: break;
391:
392: case oGlobalKnownHostsFile:
393: charptr = &options->system_hostfile;
394: goto parse_string;
395:
396: case oUserKnownHostsFile:
397: charptr = &options->user_hostfile;
398: goto parse_string;
399:
400: case oHostName:
401: charptr = &options->hostname;
402: goto parse_string;
403:
404: case oProxyCommand:
405: charptr = &options->proxy_command;
406: string = xstrdup("");
407: while ((cp = strtok(NULL, WHITESPACE)) != NULL) {
408: string = xrealloc(string, strlen(string) + strlen(cp) + 2);
409: strcat(string, " ");
410: strcat(string, cp);
411: }
412: if (*activep && *charptr == NULL)
413: *charptr = string;
414: else
415: xfree(string);
416: return 0;
417:
418: case oPort:
419: intptr = &options->port;
420: parse_int:
421: cp = strtok(NULL, WHITESPACE);
422: if (!cp)
423: fatal("%.200s line %d: Missing argument.", filename, linenum);
424: if (cp[0] < '0' || cp[0] > '9')
425: fatal("%.200s line %d: Bad number.", filename, linenum);
1.21 markus 426:
427: /* Octal, decimal, or hex format? */
428: value = strtol(cp, &cp2, 0);
429: if (cp == cp2)
430: fatal("%.200s line %d: Bad number.", filename, linenum);
1.17 markus 431: if (*activep && *intptr == -1)
432: *intptr = value;
433: break;
434:
435: case oConnectionAttempts:
436: intptr = &options->connection_attempts;
437: goto parse_int;
438:
439: case oCipher:
440: intptr = &options->cipher;
441: cp = strtok(NULL, WHITESPACE);
442: value = cipher_number(cp);
443: if (value == -1)
444: fatal("%.200s line %d: Bad cipher '%s'.",
445: filename, linenum, cp ? cp : "<NONE>");
446: if (*activep && *intptr == -1)
447: *intptr = value;
448: break;
449:
1.25 markus 450: case oCiphers:
451: cp = strtok(NULL, WHITESPACE);
452: if (!ciphers_valid(cp))
453: fatal("%.200s line %d: Bad cipher spec '%s'.",
454: filename, linenum, cp ? cp : "<NONE>");
455: if (*activep && options->ciphers == NULL)
456: options->ciphers = xstrdup(cp);
457: break;
458:
459: case oProtocol:
460: intptr = &options->protocol;
461: cp = strtok(NULL, WHITESPACE);
462: value = proto_spec(cp);
463: if (value == SSH_PROTO_UNKNOWN)
464: fatal("%.200s line %d: Bad protocol spec '%s'.",
465: filename, linenum, cp ? cp : "<NONE>");
466: if (*activep && *intptr == SSH_PROTO_UNKNOWN)
467: *intptr = value;
468: break;
469:
1.17 markus 470: case oLogLevel:
471: intptr = (int *) &options->log_level;
472: cp = strtok(NULL, WHITESPACE);
473: value = log_level_number(cp);
474: if (value == (LogLevel) - 1)
475: fatal("%.200s line %d: unsupported log level '%s'\n",
476: filename, linenum, cp ? cp : "<NONE>");
477: if (*activep && (LogLevel) * intptr == -1)
478: *intptr = (LogLevel) value;
479: break;
480:
481: case oRemoteForward:
482: cp = strtok(NULL, WHITESPACE);
483: if (!cp)
484: fatal("%.200s line %d: Missing argument.", filename, linenum);
485: if (cp[0] < '0' || cp[0] > '9')
486: fatal("%.200s line %d: Badly formatted port number.",
487: filename, linenum);
488: fwd_port = atoi(cp);
489: cp = strtok(NULL, WHITESPACE);
490: if (!cp)
491: fatal("%.200s line %d: Missing second argument.",
492: filename, linenum);
1.22 markus 493: if (sscanf(cp, "%255[^:]:%hu", buf, &fwd_host_port) != 2)
1.17 markus 494: fatal("%.200s line %d: Badly formatted host:port.",
495: filename, linenum);
496: if (*activep)
497: add_remote_forward(options, fwd_port, buf, fwd_host_port);
498: break;
499:
500: case oLocalForward:
501: cp = strtok(NULL, WHITESPACE);
502: if (!cp)
503: fatal("%.200s line %d: Missing argument.", filename, linenum);
504: if (cp[0] < '0' || cp[0] > '9')
505: fatal("%.200s line %d: Badly formatted port number.",
506: filename, linenum);
507: fwd_port = atoi(cp);
508: cp = strtok(NULL, WHITESPACE);
509: if (!cp)
510: fatal("%.200s line %d: Missing second argument.",
511: filename, linenum);
1.22 markus 512: if (sscanf(cp, "%255[^:]:%hu", buf, &fwd_host_port) != 2)
1.17 markus 513: fatal("%.200s line %d: Badly formatted host:port.",
514: filename, linenum);
515: if (*activep)
516: add_local_forward(options, fwd_port, buf, fwd_host_port);
517: break;
518:
519: case oHost:
520: *activep = 0;
521: while ((cp = strtok(NULL, WHITESPACE)) != NULL)
522: if (match_pattern(host, cp)) {
523: debug("Applying options for %.100s", cp);
524: *activep = 1;
525: break;
526: }
1.19 markus 527: /* Avoid garbage check below, as strtok already returned NULL. */
1.17 markus 528: return 0;
529:
530: case oEscapeChar:
531: intptr = &options->escape_char;
532: cp = strtok(NULL, WHITESPACE);
533: if (!cp)
534: fatal("%.200s line %d: Missing argument.", filename, linenum);
535: if (cp[0] == '^' && cp[2] == 0 &&
536: (unsigned char) cp[1] >= 64 && (unsigned char) cp[1] < 128)
537: value = (unsigned char) cp[1] & 31;
538: else if (strlen(cp) == 1)
539: value = (unsigned char) cp[0];
540: else if (strcmp(cp, "none") == 0)
541: value = -2;
542: else {
543: fatal("%.200s line %d: Bad escape character.",
544: filename, linenum);
545: /* NOTREACHED */
546: value = 0; /* Avoid compiler warning. */
547: }
548: if (*activep && *intptr == -1)
549: *intptr = value;
550: break;
551:
552: default:
553: fatal("process_config_line: Unimplemented opcode %d", opcode);
554: }
555:
556: /* Check that there is no garbage at end of line. */
557: if (strtok(NULL, WHITESPACE) != NULL)
558: fatal("%.200s line %d: garbage at end of line.",
559: filename, linenum);
560: return 0;
1.1 deraadt 561: }
562:
563:
1.19 markus 564: /*
565: * Reads the config file and modifies the options accordingly. Options
566: * should already be initialized before this call. This never returns if
567: * there is an error. If the file does not exist, this returns immediately.
568: */
1.1 deraadt 569:
1.26 ! markus 570: void
1.17 markus 571: read_config_file(const char *filename, const char *host, Options *options)
1.1 deraadt 572: {
1.17 markus 573: FILE *f;
574: char line[1024];
575: int active, linenum;
576: int bad_options = 0;
577:
578: /* Open the file. */
579: f = fopen(filename, "r");
580: if (!f)
581: return;
582:
583: debug("Reading configuration data %.200s", filename);
584:
1.19 markus 585: /*
586: * Mark that we are now processing the options. This flag is turned
587: * on/off by Host specifications.
588: */
1.17 markus 589: active = 1;
590: linenum = 0;
591: while (fgets(line, sizeof(line), f)) {
592: /* Update line number counter. */
593: linenum++;
594: if (process_config_line(options, host, line, filename, linenum, &active) != 0)
595: bad_options++;
596: }
597: fclose(f);
598: if (bad_options > 0)
599: fatal("%s: terminating, %d bad configuration options\n",
600: filename, bad_options);
1.1 deraadt 601: }
602:
1.19 markus 603: /*
604: * Initializes options to special values that indicate that they have not yet
605: * been set. Read_config_file will only set options with this value. Options
606: * are processed in the following order: command line, user config file,
607: * system config file. Last, fill_default_options is called.
608: */
1.1 deraadt 609:
1.26 ! markus 610: void
1.17 markus 611: initialize_options(Options * options)
1.1 deraadt 612: {
1.17 markus 613: memset(options, 'X', sizeof(*options));
614: options->forward_agent = -1;
615: options->forward_x11 = -1;
616: options->gateway_ports = -1;
617: options->use_privileged_port = -1;
618: options->rhosts_authentication = -1;
619: options->rsa_authentication = -1;
620: options->skey_authentication = -1;
1.1 deraadt 621: #ifdef KRB4
1.17 markus 622: options->kerberos_authentication = -1;
1.1 deraadt 623: #endif
1.5 dugsong 624: #ifdef AFS
1.17 markus 625: options->kerberos_tgt_passing = -1;
626: options->afs_token_passing = -1;
1.1 deraadt 627: #endif
1.17 markus 628: options->password_authentication = -1;
629: options->rhosts_rsa_authentication = -1;
630: options->fallback_to_rsh = -1;
631: options->use_rsh = -1;
632: options->batch_mode = -1;
633: options->check_host_ip = -1;
634: options->strict_host_key_checking = -1;
635: options->compression = -1;
636: options->keepalives = -1;
637: options->compression_level = -1;
638: options->port = -1;
639: options->connection_attempts = -1;
640: options->number_of_password_prompts = -1;
641: options->cipher = -1;
1.25 markus 642: options->ciphers = NULL;
643: options->protocol = SSH_PROTO_UNKNOWN;
1.17 markus 644: options->num_identity_files = 0;
645: options->hostname = NULL;
646: options->proxy_command = NULL;
647: options->user = NULL;
648: options->escape_char = -1;
649: options->system_hostfile = NULL;
650: options->user_hostfile = NULL;
651: options->num_local_forwards = 0;
652: options->num_remote_forwards = 0;
653: options->log_level = (LogLevel) - 1;
1.1 deraadt 654: }
655:
1.19 markus 656: /*
657: * Called after processing other sources of option data, this fills those
658: * options for which no value has been specified with their default values.
659: */
1.1 deraadt 660:
1.26 ! markus 661: void
1.17 markus 662: fill_default_options(Options * options)
1.1 deraadt 663: {
1.17 markus 664: if (options->forward_agent == -1)
665: options->forward_agent = 1;
666: if (options->forward_x11 == -1)
1.23 markus 667: options->forward_x11 = 0;
1.17 markus 668: if (options->gateway_ports == -1)
669: options->gateway_ports = 0;
670: if (options->use_privileged_port == -1)
671: options->use_privileged_port = 1;
672: if (options->rhosts_authentication == -1)
673: options->rhosts_authentication = 1;
674: if (options->rsa_authentication == -1)
675: options->rsa_authentication = 1;
676: if (options->skey_authentication == -1)
677: options->skey_authentication = 0;
1.1 deraadt 678: #ifdef KRB4
1.17 markus 679: if (options->kerberos_authentication == -1)
680: options->kerberos_authentication = 1;
1.5 dugsong 681: #endif /* KRB4 */
682: #ifdef AFS
1.17 markus 683: if (options->kerberos_tgt_passing == -1)
684: options->kerberos_tgt_passing = 1;
685: if (options->afs_token_passing == -1)
686: options->afs_token_passing = 1;
1.5 dugsong 687: #endif /* AFS */
1.17 markus 688: if (options->password_authentication == -1)
689: options->password_authentication = 1;
690: if (options->rhosts_rsa_authentication == -1)
691: options->rhosts_rsa_authentication = 1;
692: if (options->fallback_to_rsh == -1)
693: options->fallback_to_rsh = 1;
694: if (options->use_rsh == -1)
695: options->use_rsh = 0;
696: if (options->batch_mode == -1)
697: options->batch_mode = 0;
698: if (options->check_host_ip == -1)
699: options->check_host_ip = 1;
700: if (options->strict_host_key_checking == -1)
701: options->strict_host_key_checking = 2; /* 2 is default */
702: if (options->compression == -1)
703: options->compression = 0;
704: if (options->keepalives == -1)
705: options->keepalives = 1;
706: if (options->compression_level == -1)
707: options->compression_level = 6;
708: if (options->port == -1)
709: options->port = 0; /* Filled in ssh_connect. */
710: if (options->connection_attempts == -1)
711: options->connection_attempts = 4;
712: if (options->number_of_password_prompts == -1)
713: options->number_of_password_prompts = 3;
714: /* Selected in ssh_login(). */
715: if (options->cipher == -1)
716: options->cipher = SSH_CIPHER_NOT_SET;
1.25 markus 717: if (options->protocol == SSH_PROTO_UNKNOWN)
718: options->protocol = SSH_PROTO_1;
1.17 markus 719: if (options->num_identity_files == 0) {
720: options->identity_files[0] =
721: xmalloc(2 + strlen(SSH_CLIENT_IDENTITY) + 1);
722: sprintf(options->identity_files[0], "~/%.100s", SSH_CLIENT_IDENTITY);
723: options->num_identity_files = 1;
724: }
725: if (options->escape_char == -1)
726: options->escape_char = '~';
727: if (options->system_hostfile == NULL)
728: options->system_hostfile = SSH_SYSTEM_HOSTFILE;
729: if (options->user_hostfile == NULL)
730: options->user_hostfile = SSH_USER_HOSTFILE;
731: if (options->log_level == (LogLevel) - 1)
732: options->log_level = SYSLOG_LEVEL_INFO;
733: /* options->proxy_command should not be set by default */
734: /* options->user will be set in the main program if appropriate */
735: /* options->hostname will be set in the main program if appropriate */
1.1 deraadt 736: }
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