Annotation of src/usr.bin/ssh/readconf.c, Revision 1.16
1.1 deraadt 1: /*
2:
3: readconf.c
4:
5: Author: Tatu Ylonen <ylo@cs.hut.fi>
6:
7: Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
8: All rights reserved
9:
10: Created: Sat Apr 22 00:03:10 1995 ylo
11:
12: Functions for reading the configuration files.
13:
14: */
15:
16: #include "includes.h"
1.16 ! markus 17: RCSID("$Id: readconf.c,v 1.15 1999/11/19 16:04:17 markus Exp $");
1.1 deraadt 18:
19: #include "ssh.h"
20: #include "cipher.h"
21: #include "readconf.h"
22: #include "xmalloc.h"
23:
24: /* Format of the configuration file:
25:
26: # Configuration data is parsed as follows:
27: # 1. command line options
28: # 2. user-specific file
29: # 3. system-wide file
30: # Any configuration value is only changed the first time it is set.
31: # Thus, host-specific definitions should be at the beginning of the
32: # configuration file, and defaults at the end.
33:
34: # Host-specific declarations. These may override anything above. A single
35: # host may match multiple declarations; these are processed in the order
36: # that they are given in.
37:
38: Host *.ngs.fi ngs.fi
39: FallBackToRsh no
40:
41: Host fake.com
42: HostName another.host.name.real.org
43: User blaah
44: Port 34289
45: ForwardX11 no
46: ForwardAgent no
47:
48: Host books.com
49: RemoteForward 9999 shadows.cs.hut.fi:9999
50: Cipher 3des
51:
52: Host fascist.blob.com
53: Port 23123
54: User tylonen
55: RhostsAuthentication no
56: PasswordAuthentication no
57:
58: Host puukko.hut.fi
59: User t35124p
60: ProxyCommand ssh-proxy %h %p
61:
62: Host *.fr
63: UseRsh yes
64:
65: Host *.su
66: Cipher none
67: PasswordAuthentication no
68:
69: # Defaults for various options
70: Host *
71: ForwardAgent no
72: ForwardX11 yes
73: RhostsAuthentication yes
74: PasswordAuthentication yes
75: RSAAuthentication yes
76: RhostsRSAAuthentication yes
77: FallBackToRsh no
78: UseRsh no
79: StrictHostKeyChecking yes
80: KeepAlives no
81: IdentityFile ~/.ssh/identity
82: Port 22
83: EscapeChar ~
84:
85: */
86:
87: /* Keyword tokens. */
88:
89: typedef enum
90: {
1.14 markus 91: oBadOption,
1.3 deraadt 92: oForwardAgent, oForwardX11, oGatewayPorts, oRhostsAuthentication,
1.1 deraadt 93: oPasswordAuthentication, oRSAAuthentication, oFallBackToRsh, oUseRsh,
1.16 ! markus 94: oSkeyAuthentication,
1.1 deraadt 95: #ifdef KRB4
96: oKerberosAuthentication,
97: #endif /* KRB4 */
98: #ifdef AFS
1.5 dugsong 99: oKerberosTgtPassing, oAFSTokenPassing,
1.1 deraadt 100: #endif
101: oIdentityFile, oHostName, oPort, oCipher, oRemoteForward, oLocalForward,
102: oUser, oHost, oEscapeChar, oRhostsRSAAuthentication, oProxyCommand,
103: oGlobalKnownHostsFile, oUserKnownHostsFile, oConnectionAttempts,
1.8 provos 104: oBatchMode, oCheckHostIP, oStrictHostKeyChecking, oCompression,
1.11 markus 105: oCompressionLevel, oKeepAlives, oNumberOfPasswordPrompts, oTISAuthentication,
1.13 markus 106: oUsePrivilegedPort, oLogLevel
1.1 deraadt 107: } OpCodes;
108:
109: /* Textual representations of the tokens. */
110:
111: static struct
112: {
113: const char *name;
114: OpCodes opcode;
115: } keywords[] =
116: {
117: { "forwardagent", oForwardAgent },
118: { "forwardx11", oForwardX11 },
1.3 deraadt 119: { "gatewayports", oGatewayPorts },
1.12 markus 120: { "useprivilegedport", oUsePrivilegedPort },
1.1 deraadt 121: { "rhostsauthentication", oRhostsAuthentication },
122: { "passwordauthentication", oPasswordAuthentication },
123: { "rsaauthentication", oRSAAuthentication },
1.16 ! markus 124: { "skeyauthentication", oSkeyAuthentication },
1.1 deraadt 125: #ifdef KRB4
126: { "kerberosauthentication", oKerberosAuthentication },
127: #endif /* KRB4 */
1.5 dugsong 128: #ifdef AFS
1.1 deraadt 129: { "kerberostgtpassing", oKerberosTgtPassing },
130: { "afstokenpassing", oAFSTokenPassing },
131: #endif
132: { "fallbacktorsh", oFallBackToRsh },
133: { "usersh", oUseRsh },
134: { "identityfile", oIdentityFile },
135: { "hostname", oHostName },
136: { "proxycommand", oProxyCommand },
137: { "port", oPort },
138: { "cipher", oCipher },
139: { "remoteforward", oRemoteForward },
140: { "localforward", oLocalForward },
141: { "user", oUser },
142: { "host", oHost },
143: { "escapechar", oEscapeChar },
144: { "rhostsrsaauthentication", oRhostsRSAAuthentication },
145: { "globalknownhostsfile", oGlobalKnownHostsFile },
146: { "userknownhostsfile", oUserKnownHostsFile },
147: { "connectionattempts", oConnectionAttempts },
148: { "batchmode", oBatchMode },
1.8 provos 149: { "checkhostip", oCheckHostIP },
1.1 deraadt 150: { "stricthostkeychecking", oStrictHostKeyChecking },
151: { "compression", oCompression },
152: { "compressionlevel", oCompressionLevel },
153: { "keepalive", oKeepAlives },
1.10 dugsong 154: { "numberofpasswordprompts", oNumberOfPasswordPrompts },
1.1 deraadt 155: { "tisauthentication", oTISAuthentication },
1.13 markus 156: { "loglevel", oLogLevel },
157: { NULL, 0 }
158: };
159:
1.1 deraadt 160: /* Characters considered whitespace in strtok calls. */
161: #define WHITESPACE " \t\r\n"
162:
163:
164: /* Adds a local TCP/IP port forward to options. Never returns if there
165: is an error. */
166:
167: void add_local_forward(Options *options, int port, const char *host,
168: int host_port)
169: {
170: Forward *fwd;
1.4 deraadt 171: extern uid_t original_real_uid;
172: if ((port & 0xffff) != port)
173: fatal("Requested forwarding of nonexistent port %d.", port);
1.7 deraadt 174: if (port < IPPORT_RESERVED && original_real_uid != 0)
1.4 deraadt 175: fatal("Privileged ports can only be forwarded by root.\n");
1.1 deraadt 176: if (options->num_local_forwards >= SSH_MAX_FORWARDS_PER_DIRECTION)
177: fatal("Too many local forwards (max %d).", SSH_MAX_FORWARDS_PER_DIRECTION);
178: fwd = &options->local_forwards[options->num_local_forwards++];
179: fwd->port = port;
180: fwd->host = xstrdup(host);
181: fwd->host_port = host_port;
182: }
183:
184: /* Adds a remote TCP/IP port forward to options. Never returns if there
185: is an error. */
186:
187: void add_remote_forward(Options *options, int port, const char *host,
188: int host_port)
189: {
190: Forward *fwd;
191: if (options->num_remote_forwards >= SSH_MAX_FORWARDS_PER_DIRECTION)
192: fatal("Too many remote forwards (max %d).",
193: SSH_MAX_FORWARDS_PER_DIRECTION);
194: fwd = &options->remote_forwards[options->num_remote_forwards++];
195: fwd->port = port;
196: fwd->host = xstrdup(host);
197: fwd->host_port = host_port;
198: }
199:
200: /* Returns the number of the token pointed to by cp of length len.
201: Never returns if the token is not known. */
202:
203: static OpCodes parse_token(const char *cp, const char *filename, int linenum)
204: {
205: unsigned int i;
206:
207: for (i = 0; keywords[i].name; i++)
208: if (strcmp(cp, keywords[i].name) == 0)
209: return keywords[i].opcode;
210:
1.14 markus 211: fprintf(stderr, "%s: line %d: Bad configuration option: %s\n",
212: filename, linenum, cp);
213: return oBadOption;
1.1 deraadt 214: }
215:
216: /* Processes a single option line as used in the configuration files.
217: This only sets those values that have not already been set. */
218:
1.14 markus 219: int
220: process_config_line(Options *options, const char *host,
1.1 deraadt 221: char *line, const char *filename, int linenum,
222: int *activep)
223: {
224: char buf[256], *cp, *string, **charptr;
1.15 markus 225: int opcode, *intptr, value, fwd_port, fwd_host_port;
1.1 deraadt 226:
227: /* Skip leading whitespace. */
228: cp = line + strspn(line, WHITESPACE);
229: if (!*cp || *cp == '\n' || *cp == '#')
1.14 markus 230: return 0;
1.1 deraadt 231:
232: /* Get the keyword. (Each line is supposed to begin with a keyword). */
233: cp = strtok(cp, WHITESPACE);
234: {
235: char *t = cp;
236: for (; *t != 0; t++)
237: if ('A' <= *t && *t <= 'Z')
238: *t = *t - 'A' + 'a'; /* tolower */
239:
240: }
241: opcode = parse_token(cp, filename, linenum);
242:
243: switch (opcode)
244: {
1.14 markus 245: case oBadOption:
246: return -1; /* don't panic, but count bad options */
247: /*NOTREACHED*/
1.1 deraadt 248: case oForwardAgent:
249: intptr = &options->forward_agent;
250: parse_flag:
251: cp = strtok(NULL, WHITESPACE);
252: if (!cp)
253: fatal("%.200s line %d: Missing yes/no argument.", filename, linenum);
254: value = 0; /* To avoid compiler warning... */
255: if (strcmp(cp, "yes") == 0 || strcmp(cp, "true") == 0)
256: value = 1;
257: else if (strcmp(cp, "no") == 0 || strcmp(cp, "false") == 0)
258: value = 0;
259: else
260: fatal("%.200s line %d: Bad yes/no argument.", filename, linenum);
261: if (*activep && *intptr == -1)
262: *intptr = value;
263: break;
264:
265: case oForwardX11:
266: intptr = &options->forward_x11;
267: goto parse_flag;
1.3 deraadt 268:
269: case oGatewayPorts:
270: intptr = &options->gateway_ports;
271: goto parse_flag;
1.1 deraadt 272:
1.11 markus 273: case oUsePrivilegedPort:
274: intptr = &options->use_privileged_port;
275: goto parse_flag;
276:
1.1 deraadt 277: case oRhostsAuthentication:
278: intptr = &options->rhosts_authentication;
279: goto parse_flag;
280:
281: case oPasswordAuthentication:
282: intptr = &options->password_authentication;
283: goto parse_flag;
284:
285: case oRSAAuthentication:
286: intptr = &options->rsa_authentication;
287: goto parse_flag;
288:
289: case oRhostsRSAAuthentication:
290: intptr = &options->rhosts_rsa_authentication;
291: goto parse_flag;
292:
1.16 ! markus 293: case oTISAuthentication:
! 294: /* fallthrough, there is no difference on the client side */
! 295: case oSkeyAuthentication:
! 296: intptr = &options->skey_authentication;
! 297: goto parse_flag;
! 298:
1.1 deraadt 299: #ifdef KRB4
300: case oKerberosAuthentication:
301: intptr = &options->kerberos_authentication;
302: goto parse_flag;
303: #endif /* KRB4 */
304:
1.5 dugsong 305: #ifdef AFS
1.1 deraadt 306: case oKerberosTgtPassing:
307: intptr = &options->kerberos_tgt_passing;
308: goto parse_flag;
309:
310: case oAFSTokenPassing:
311: intptr = &options->afs_token_passing;
312: goto parse_flag;
313: #endif
314:
315: case oFallBackToRsh:
316: intptr = &options->fallback_to_rsh;
317: goto parse_flag;
318:
319: case oUseRsh:
320: intptr = &options->use_rsh;
321: goto parse_flag;
322:
323: case oBatchMode:
324: intptr = &options->batch_mode;
1.9 provos 325: goto parse_flag;
326:
327: case oCheckHostIP:
328: intptr = &options->check_host_ip;
1.1 deraadt 329: goto parse_flag;
330:
331: case oStrictHostKeyChecking:
332: intptr = &options->strict_host_key_checking;
333: cp = strtok(NULL, WHITESPACE);
334: if (!cp)
335: fatal("%.200s line %d: Missing yes/no argument.",
336: filename, linenum);
337: value = 0; /* To avoid compiler warning... */
338: if (strcmp(cp, "yes") == 0 || strcmp(cp, "true") == 0)
339: value = 1;
340: else if (strcmp(cp, "no") == 0 || strcmp(cp, "false") == 0)
341: value = 0;
342: else if (strcmp(cp, "ask") == 0)
343: value = 2;
344: else
345: fatal("%.200s line %d: Bad yes/no/ask argument.", filename, linenum);
346: if (*activep && *intptr == -1)
347: *intptr = value;
348: break;
349:
350: case oCompression:
351: intptr = &options->compression;
352: goto parse_flag;
353:
354: case oKeepAlives:
355: intptr = &options->keepalives;
356: goto parse_flag;
357:
1.10 dugsong 358: case oNumberOfPasswordPrompts:
359: intptr = &options->number_of_password_prompts;
360: goto parse_int;
1.1 deraadt 361:
362: case oCompressionLevel:
363: intptr = &options->compression_level;
364: goto parse_int;
365:
366: case oIdentityFile:
367: cp = strtok(NULL, WHITESPACE);
368: if (!cp)
369: fatal("%.200s line %d: Missing argument.", filename, linenum);
370: if (*activep)
371: {
372: if (options->num_identity_files >= SSH_MAX_IDENTITY_FILES)
373: fatal("%.200s line %d: Too many identity files specified (max %d).",
374: filename, linenum, SSH_MAX_IDENTITY_FILES);
375: options->identity_files[options->num_identity_files++] = xstrdup(cp);
376: }
377: break;
378:
379: case oUser:
380: charptr = &options->user;
381: parse_string:
382: cp = strtok(NULL, WHITESPACE);
383: if (!cp)
384: fatal("%.200s line %d: Missing argument.", filename, linenum);
385: if (*activep && *charptr == NULL)
386: *charptr = xstrdup(cp);
387: break;
388:
389: case oGlobalKnownHostsFile:
390: charptr = &options->system_hostfile;
391: goto parse_string;
392:
393: case oUserKnownHostsFile:
394: charptr = &options->user_hostfile;
395: goto parse_string;
396:
397: case oHostName:
398: charptr = &options->hostname;
399: goto parse_string;
400:
401: case oProxyCommand:
402: charptr = &options->proxy_command;
403: string = xstrdup("");
404: while ((cp = strtok(NULL, WHITESPACE)) != NULL)
405: {
406: string = xrealloc(string, strlen(string) + strlen(cp) + 2);
407: strcat(string, " ");
408: strcat(string, cp);
409: }
410: if (*activep && *charptr == NULL)
411: *charptr = string;
412: else
413: xfree(string);
1.14 markus 414: return 0;
1.1 deraadt 415:
416: case oPort:
417: intptr = &options->port;
418: parse_int:
419: cp = strtok(NULL, WHITESPACE);
420: if (!cp)
421: fatal("%.200s line %d: Missing argument.", filename, linenum);
422: if (cp[0] < '0' || cp[0] > '9')
423: fatal("%.200s line %d: Bad number.", filename, linenum);
424: #if 0
425: value = atoi(cp);
426: #else
427: {
428: char *ptr;
429: value = strtol(cp, &ptr, 0); /* Octal, decimal, or hex format? */
430: if (cp == ptr)
431: fatal("%.200s line %d: Bad number.", filename, linenum);
432: }
433: #endif
434: if (*activep && *intptr == -1)
435: *intptr = value;
436: break;
437:
438: case oConnectionAttempts:
439: intptr = &options->connection_attempts;
440: goto parse_int;
441:
442: case oCipher:
443: intptr = &options->cipher;
444: cp = strtok(NULL, WHITESPACE);
445: value = cipher_number(cp);
446: if (value == -1)
1.15 markus 447: fatal("%.200s line %d: Bad cipher '%s'.",
448: filename, linenum, cp ? cp : "<NONE>");
1.1 deraadt 449: if (*activep && *intptr == -1)
450: *intptr = value;
451: break;
1.13 markus 452:
453: case oLogLevel:
1.15 markus 454: intptr = (int *)&options->log_level;
1.13 markus 455: cp = strtok(NULL, WHITESPACE);
1.15 markus 456: value = log_level_number(cp);
457: if (value == (LogLevel)-1)
458: fatal("%.200s line %d: unsupported log level '%s'\n",
459: filename, linenum, cp ? cp : "<NONE>");
460: if (*activep && (LogLevel)*intptr == -1)
461: *intptr = (LogLevel)value;
1.13 markus 462: break;
1.1 deraadt 463:
464: case oRemoteForward:
465: cp = strtok(NULL, WHITESPACE);
466: if (!cp)
467: fatal("%.200s line %d: Missing argument.", filename, linenum);
468: if (cp[0] < '0' || cp[0] > '9')
469: fatal("%.200s line %d: Badly formatted port number.",
470: filename, linenum);
471: fwd_port = atoi(cp);
472: cp = strtok(NULL, WHITESPACE);
473: if (!cp)
474: fatal("%.200s line %d: Missing second argument.",
475: filename, linenum);
476: if (sscanf(cp, "%255[^:]:%d", buf, &fwd_host_port) != 2)
477: fatal("%.200s line %d: Badly formatted host:port.",
478: filename, linenum);
479: if (*activep)
480: add_remote_forward(options, fwd_port, buf, fwd_host_port);
481: break;
482:
483: case oLocalForward:
484: cp = strtok(NULL, WHITESPACE);
485: if (!cp)
486: fatal("%.200s line %d: Missing argument.", filename, linenum);
487: if (cp[0] < '0' || cp[0] > '9')
488: fatal("%.200s line %d: Badly formatted port number.",
489: filename, linenum);
490: fwd_port = atoi(cp);
491: cp = strtok(NULL, WHITESPACE);
492: if (!cp)
493: fatal("%.200s line %d: Missing second argument.",
494: filename, linenum);
495: if (sscanf(cp, "%255[^:]:%d", buf, &fwd_host_port) != 2)
496: fatal("%.200s line %d: Badly formatted host:port.",
497: filename, linenum);
498: if (*activep)
499: add_local_forward(options, fwd_port, buf, fwd_host_port);
500: break;
501:
502: case oHost:
503: *activep = 0;
504: while ((cp = strtok(NULL, WHITESPACE)) != NULL)
505: if (match_pattern(host, cp))
506: {
507: debug("Applying options for %.100s", cp);
508: *activep = 1;
509: break;
510: }
511: /* Avoid garbage check below, as strtok already returned NULL. */
1.14 markus 512: return 0;
1.1 deraadt 513:
514: case oEscapeChar:
515: intptr = &options->escape_char;
516: cp = strtok(NULL, WHITESPACE);
517: if (!cp)
518: fatal("%.200s line %d: Missing argument.", filename, linenum);
519: if (cp[0] == '^' && cp[2] == 0 &&
520: (unsigned char)cp[1] >= 64 && (unsigned char)cp[1] < 128)
521: value = (unsigned char)cp[1] & 31;
522: else
523: if (strlen(cp) == 1)
524: value = (unsigned char)cp[0];
525: else
526: if (strcmp(cp, "none") == 0)
527: value = -2;
528: else
529: {
530: fatal("%.200s line %d: Bad escape character.",
531: filename, linenum);
532: /*NOTREACHED*/
533: value = 0; /* Avoid compiler warning. */
534: }
535: if (*activep && *intptr == -1)
536: *intptr = value;
537: break;
538:
539: default:
1.14 markus 540: fatal("process_config_line: Unimplemented opcode %d", opcode);
1.1 deraadt 541: }
542:
543: /* Check that there is no garbage at end of line. */
544: if (strtok(NULL, WHITESPACE) != NULL)
545: fatal("%.200s line %d: garbage at end of line.",
546: filename, linenum);
1.14 markus 547: return 0;
1.1 deraadt 548: }
549:
550:
551: /* Reads the config file and modifies the options accordingly. Options should
552: already be initialized before this call. This never returns if there
553: is an error. If the file does not exist, this returns immediately. */
554:
555: void read_config_file(const char *filename, const char *host, Options *options)
556: {
557: FILE *f;
558: char line[1024];
559: int active, linenum;
1.14 markus 560: int bad_options = 0;
1.1 deraadt 561:
562: /* Open the file. */
563: f = fopen(filename, "r");
564: if (!f)
565: return;
566:
567: debug("Reading configuration data %.200s", filename);
568:
569: /* Mark that we are now processing the options. This flag is turned on/off
570: by Host specifications. */
571: active = 1;
572: linenum = 0;
573: while (fgets(line, sizeof(line), f))
574: {
575: /* Update line number counter. */
576: linenum++;
1.14 markus 577: if (process_config_line(options, host, line, filename, linenum, &active) != 0)
578: bad_options++;
1.1 deraadt 579: }
580: fclose(f);
1.14 markus 581: if (bad_options > 0)
582: fatal("%s: terminating, %d bad configuration options\n",
583: filename, bad_options);
1.1 deraadt 584: }
585:
586: /* Initializes options to special values that indicate that they have not
587: yet been set. Read_config_file will only set options with this value.
588: Options are processed in the following order: command line, user config
589: file, system config file. Last, fill_default_options is called. */
590:
591: void initialize_options(Options *options)
592: {
593: memset(options, 'X', sizeof(*options));
594: options->forward_agent = -1;
595: options->forward_x11 = -1;
1.3 deraadt 596: options->gateway_ports = -1;
1.11 markus 597: options->use_privileged_port = -1;
1.1 deraadt 598: options->rhosts_authentication = -1;
599: options->rsa_authentication = -1;
1.16 ! markus 600: options->skey_authentication = -1;
1.1 deraadt 601: #ifdef KRB4
602: options->kerberos_authentication = -1;
603: #endif
1.5 dugsong 604: #ifdef AFS
1.1 deraadt 605: options->kerberos_tgt_passing = -1;
606: options->afs_token_passing = -1;
607: #endif
608: options->password_authentication = -1;
609: options->rhosts_rsa_authentication = -1;
610: options->fallback_to_rsh = -1;
611: options->use_rsh = -1;
612: options->batch_mode = -1;
1.8 provos 613: options->check_host_ip = -1;
1.1 deraadt 614: options->strict_host_key_checking = -1;
615: options->compression = -1;
616: options->keepalives = -1;
617: options->compression_level = -1;
618: options->port = -1;
619: options->connection_attempts = -1;
1.10 dugsong 620: options->number_of_password_prompts = -1;
1.1 deraadt 621: options->cipher = -1;
622: options->num_identity_files = 0;
623: options->hostname = NULL;
624: options->proxy_command = NULL;
625: options->user = NULL;
626: options->escape_char = -1;
627: options->system_hostfile = NULL;
628: options->user_hostfile = NULL;
629: options->num_local_forwards = 0;
630: options->num_remote_forwards = 0;
1.13 markus 631: options->log_level = (LogLevel)-1;
1.1 deraadt 632: }
633:
634: /* Called after processing other sources of option data, this fills those
635: options for which no value has been specified with their default values. */
636:
637: void fill_default_options(Options *options)
638: {
639: if (options->forward_agent == -1)
640: options->forward_agent = 1;
641: if (options->forward_x11 == -1)
642: options->forward_x11 = 1;
1.3 deraadt 643: if (options->gateway_ports == -1)
644: options->gateway_ports = 0;
1.11 markus 645: if (options->use_privileged_port == -1)
646: options->use_privileged_port = 1;
1.1 deraadt 647: if (options->rhosts_authentication == -1)
648: options->rhosts_authentication = 1;
649: if (options->rsa_authentication == -1)
650: options->rsa_authentication = 1;
1.16 ! markus 651: if (options->skey_authentication == -1)
! 652: options->skey_authentication = 0;
1.1 deraadt 653: #ifdef KRB4
654: if (options->kerberos_authentication == -1)
655: options->kerberos_authentication = 1;
1.5 dugsong 656: #endif /* KRB4 */
657: #ifdef AFS
1.1 deraadt 658: if (options->kerberos_tgt_passing == -1)
659: options->kerberos_tgt_passing = 1;
660: if (options->afs_token_passing == -1)
661: options->afs_token_passing = 1;
1.5 dugsong 662: #endif /* AFS */
1.1 deraadt 663: if (options->password_authentication == -1)
664: options->password_authentication = 1;
665: if (options->rhosts_rsa_authentication == -1)
666: options->rhosts_rsa_authentication = 1;
667: if (options->fallback_to_rsh == -1)
668: options->fallback_to_rsh = 1;
669: if (options->use_rsh == -1)
670: options->use_rsh = 0;
671: if (options->batch_mode == -1)
672: options->batch_mode = 0;
1.8 provos 673: if (options->check_host_ip == -1)
674: options->check_host_ip = 1;
1.1 deraadt 675: if (options->strict_host_key_checking == -1)
676: options->strict_host_key_checking = 2; /* 2 is default */
677: if (options->compression == -1)
678: options->compression = 0;
679: if (options->keepalives == -1)
680: options->keepalives = 1;
681: if (options->compression_level == -1)
682: options->compression_level = 6;
683: if (options->port == -1)
684: options->port = 0; /* Filled in ssh_connect. */
685: if (options->connection_attempts == -1)
686: options->connection_attempts = 4;
1.10 dugsong 687: if (options->number_of_password_prompts == -1)
688: options->number_of_password_prompts = 3;
1.1 deraadt 689: if (options->cipher == -1)
690: options->cipher = SSH_CIPHER_NOT_SET; /* Selected in ssh_login(). */
691: if (options->num_identity_files == 0)
692: {
693: options->identity_files[0] =
694: xmalloc(2 + strlen(SSH_CLIENT_IDENTITY) + 1);
695: sprintf(options->identity_files[0], "~/%.100s", SSH_CLIENT_IDENTITY);
696: options->num_identity_files = 1;
697: }
698: if (options->escape_char == -1)
699: options->escape_char = '~';
700: if (options->system_hostfile == NULL)
701: options->system_hostfile = SSH_SYSTEM_HOSTFILE;
702: if (options->user_hostfile == NULL)
703: options->user_hostfile = SSH_USER_HOSTFILE;
1.13 markus 704: if (options->log_level == (LogLevel)-1)
705: options->log_level = SYSLOG_LEVEL_INFO;
1.1 deraadt 706: /* options->proxy_command should not be set by default */
707: /* options->user will be set in the main program if appropriate */
708: /* options->hostname will be set in the main program if appropriate */
709: }
710:
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