Annotation of src/usr.bin/ssh/readconf.c, Revision 1.29
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"
1.29 ! markus 17: RCSID("$Id: readconf.c,v 1.28 2000/04/26 22:43:14 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,
1.27 markus 107: oUsePrivilegedPort, oLogLevel, oCiphers, oProtocol, oIdentityFile2,
108: oGlobalKnownHostsFile2, oUserKnownHostsFile2
1.1 deraadt 109: } OpCodes;
110:
111: /* Textual representations of the tokens. */
112:
1.17 markus 113: static struct {
114: const char *name;
115: OpCodes opcode;
116: } keywords[] = {
117: { "forwardagent", oForwardAgent },
118: { "forwardx11", oForwardX11 },
119: { "gatewayports", oGatewayPorts },
120: { "useprivilegedport", oUsePrivilegedPort },
121: { "rhostsauthentication", oRhostsAuthentication },
122: { "passwordauthentication", oPasswordAuthentication },
123: { "rsaauthentication", oRSAAuthentication },
124: { "skeyauthentication", oSkeyAuthentication },
1.1 deraadt 125: #ifdef KRB4
1.17 markus 126: { "kerberosauthentication", oKerberosAuthentication },
1.1 deraadt 127: #endif /* KRB4 */
1.5 dugsong 128: #ifdef AFS
1.17 markus 129: { "kerberostgtpassing", oKerberosTgtPassing },
130: { "afstokenpassing", oAFSTokenPassing },
1.1 deraadt 131: #endif
1.17 markus 132: { "fallbacktorsh", oFallBackToRsh },
133: { "usersh", oUseRsh },
134: { "identityfile", oIdentityFile },
1.27 markus 135: { "identityfile2", oIdentityFile2 },
1.17 markus 136: { "hostname", oHostName },
137: { "proxycommand", oProxyCommand },
138: { "port", oPort },
139: { "cipher", oCipher },
1.25 markus 140: { "ciphers", oCiphers },
141: { "protocol", oProtocol },
1.17 markus 142: { "remoteforward", oRemoteForward },
143: { "localforward", oLocalForward },
144: { "user", oUser },
145: { "host", oHost },
146: { "escapechar", oEscapeChar },
147: { "rhostsrsaauthentication", oRhostsRSAAuthentication },
148: { "globalknownhostsfile", oGlobalKnownHostsFile },
149: { "userknownhostsfile", oUserKnownHostsFile },
1.27 markus 150: { "globalknownhostsfile2", oGlobalKnownHostsFile2 },
151: { "userknownhostsfile2", oUserKnownHostsFile2 },
1.17 markus 152: { "connectionattempts", oConnectionAttempts },
153: { "batchmode", oBatchMode },
154: { "checkhostip", oCheckHostIP },
155: { "stricthostkeychecking", oStrictHostKeyChecking },
156: { "compression", oCompression },
157: { "compressionlevel", oCompressionLevel },
158: { "keepalive", oKeepAlives },
159: { "numberofpasswordprompts", oNumberOfPasswordPrompts },
160: { "tisauthentication", oTISAuthentication },
161: { "loglevel", oLogLevel },
162: { NULL, 0 }
1.13 markus 163: };
164:
1.1 deraadt 165: /* Characters considered whitespace in strtok calls. */
166: #define WHITESPACE " \t\r\n"
167:
168:
1.19 markus 169: /*
170: * Adds a local TCP/IP port forward to options. Never returns if there is an
171: * error.
172: */
1.1 deraadt 173:
1.26 markus 174: void
1.22 markus 175: add_local_forward(Options *options, u_short port, const char *host,
176: u_short host_port)
1.1 deraadt 177: {
1.17 markus 178: Forward *fwd;
179: extern uid_t original_real_uid;
180: if (port < IPPORT_RESERVED && original_real_uid != 0)
181: fatal("Privileged ports can only be forwarded by root.\n");
182: if (options->num_local_forwards >= SSH_MAX_FORWARDS_PER_DIRECTION)
183: fatal("Too many local forwards (max %d).", SSH_MAX_FORWARDS_PER_DIRECTION);
184: fwd = &options->local_forwards[options->num_local_forwards++];
185: fwd->port = port;
186: fwd->host = xstrdup(host);
187: fwd->host_port = host_port;
1.1 deraadt 188: }
189:
1.19 markus 190: /*
191: * Adds a remote TCP/IP port forward to options. Never returns if there is
192: * an error.
193: */
1.1 deraadt 194:
1.26 markus 195: void
1.22 markus 196: add_remote_forward(Options *options, u_short port, const char *host,
197: u_short host_port)
1.1 deraadt 198: {
1.17 markus 199: Forward *fwd;
200: if (options->num_remote_forwards >= SSH_MAX_FORWARDS_PER_DIRECTION)
201: fatal("Too many remote forwards (max %d).",
202: SSH_MAX_FORWARDS_PER_DIRECTION);
203: fwd = &options->remote_forwards[options->num_remote_forwards++];
204: fwd->port = port;
205: fwd->host = xstrdup(host);
206: fwd->host_port = host_port;
1.1 deraadt 207: }
208:
1.19 markus 209: /*
210: * Returns the number of the token pointed to by cp of length len. Never
211: * returns if the token is not known.
212: */
1.1 deraadt 213:
1.26 markus 214: static OpCodes
1.17 markus 215: parse_token(const char *cp, const char *filename, int linenum)
1.1 deraadt 216: {
1.17 markus 217: unsigned int i;
1.1 deraadt 218:
1.17 markus 219: for (i = 0; keywords[i].name; i++)
1.20 markus 220: if (strcasecmp(cp, keywords[i].name) == 0)
1.17 markus 221: return keywords[i].opcode;
222:
223: fprintf(stderr, "%s: line %d: Bad configuration option: %s\n",
224: filename, linenum, cp);
225: return oBadOption;
1.1 deraadt 226: }
227:
1.19 markus 228: /*
229: * Processes a single option line as used in the configuration files. This
230: * only sets those values that have not already been set.
231: */
1.1 deraadt 232:
1.14 markus 233: int
234: process_config_line(Options *options, const char *host,
1.17 markus 235: char *line, const char *filename, int linenum,
236: int *activep)
1.1 deraadt 237: {
1.21 markus 238: char buf[256], *cp, *string, **charptr, *cp2;
1.22 markus 239: int opcode, *intptr, value;
240: u_short fwd_port, fwd_host_port;
1.1 deraadt 241:
1.17 markus 242: /* Skip leading whitespace. */
243: cp = line + strspn(line, WHITESPACE);
244: if (!*cp || *cp == '\n' || *cp == '#')
245: return 0;
246:
1.19 markus 247: /* Get the keyword. (Each line is supposed to begin with a keyword). */
1.17 markus 248: cp = strtok(cp, WHITESPACE);
249: opcode = parse_token(cp, filename, linenum);
250:
251: switch (opcode) {
252: case oBadOption:
1.19 markus 253: /* don't panic, but count bad options */
254: return -1;
1.17 markus 255: /* NOTREACHED */
256: case oForwardAgent:
257: intptr = &options->forward_agent;
258: parse_flag:
259: cp = strtok(NULL, WHITESPACE);
260: if (!cp)
261: fatal("%.200s line %d: Missing yes/no argument.", filename, linenum);
262: value = 0; /* To avoid compiler warning... */
263: if (strcmp(cp, "yes") == 0 || strcmp(cp, "true") == 0)
264: value = 1;
265: else if (strcmp(cp, "no") == 0 || strcmp(cp, "false") == 0)
266: value = 0;
267: else
268: fatal("%.200s line %d: Bad yes/no argument.", filename, linenum);
269: if (*activep && *intptr == -1)
270: *intptr = value;
271: break;
272:
273: case oForwardX11:
274: intptr = &options->forward_x11;
275: goto parse_flag;
276:
277: case oGatewayPorts:
278: intptr = &options->gateway_ports;
279: goto parse_flag;
280:
281: case oUsePrivilegedPort:
282: intptr = &options->use_privileged_port;
283: goto parse_flag;
284:
285: case oRhostsAuthentication:
286: intptr = &options->rhosts_authentication;
287: goto parse_flag;
288:
289: case oPasswordAuthentication:
290: intptr = &options->password_authentication;
291: goto parse_flag;
292:
293: case oRSAAuthentication:
294: intptr = &options->rsa_authentication;
295: goto parse_flag;
296:
297: case oRhostsRSAAuthentication:
298: intptr = &options->rhosts_rsa_authentication;
299: goto parse_flag;
300:
301: case oTISAuthentication:
302: /* fallthrough, there is no difference on the client side */
303: case oSkeyAuthentication:
304: intptr = &options->skey_authentication;
305: goto parse_flag;
1.16 markus 306:
1.1 deraadt 307: #ifdef KRB4
1.17 markus 308: case oKerberosAuthentication:
309: intptr = &options->kerberos_authentication;
310: goto parse_flag;
1.1 deraadt 311: #endif /* KRB4 */
312:
1.5 dugsong 313: #ifdef AFS
1.17 markus 314: case oKerberosTgtPassing:
315: intptr = &options->kerberos_tgt_passing;
316: goto parse_flag;
317:
318: case oAFSTokenPassing:
319: intptr = &options->afs_token_passing;
320: goto parse_flag;
1.1 deraadt 321: #endif
1.17 markus 322:
323: case oFallBackToRsh:
324: intptr = &options->fallback_to_rsh;
325: goto parse_flag;
326:
327: case oUseRsh:
328: intptr = &options->use_rsh;
329: goto parse_flag;
330:
331: case oBatchMode:
332: intptr = &options->batch_mode;
333: goto parse_flag;
334:
335: case oCheckHostIP:
336: intptr = &options->check_host_ip;
337: goto parse_flag;
338:
339: case oStrictHostKeyChecking:
340: intptr = &options->strict_host_key_checking;
341: cp = strtok(NULL, WHITESPACE);
342: if (!cp)
343: fatal("%.200s line %d: Missing yes/no argument.",
344: filename, linenum);
345: value = 0; /* To avoid compiler warning... */
346: if (strcmp(cp, "yes") == 0 || strcmp(cp, "true") == 0)
347: value = 1;
348: else if (strcmp(cp, "no") == 0 || strcmp(cp, "false") == 0)
349: value = 0;
350: else if (strcmp(cp, "ask") == 0)
351: value = 2;
352: else
353: fatal("%.200s line %d: Bad yes/no/ask argument.", filename, linenum);
354: if (*activep && *intptr == -1)
355: *intptr = value;
356: break;
357:
358: case oCompression:
359: intptr = &options->compression;
360: goto parse_flag;
361:
362: case oKeepAlives:
363: intptr = &options->keepalives;
364: goto parse_flag;
365:
366: case oNumberOfPasswordPrompts:
367: intptr = &options->number_of_password_prompts;
368: goto parse_int;
369:
370: case oCompressionLevel:
371: intptr = &options->compression_level;
372: goto parse_int;
373:
374: case oIdentityFile:
1.27 markus 375: case oIdentityFile2:
1.17 markus 376: cp = strtok(NULL, WHITESPACE);
377: if (!cp)
378: fatal("%.200s line %d: Missing argument.", filename, linenum);
379: if (*activep) {
1.27 markus 380: intptr = (opcode == oIdentityFile) ?
381: &options->num_identity_files :
382: &options->num_identity_files2;
383: if (*intptr >= SSH_MAX_IDENTITY_FILES)
1.17 markus 384: fatal("%.200s line %d: Too many identity files specified (max %d).",
385: filename, linenum, SSH_MAX_IDENTITY_FILES);
1.27 markus 386: charptr = (opcode == oIdentityFile) ?
387: &options->identity_files[*intptr] :
388: &options->identity_files2[*intptr];
389: *charptr = xstrdup(cp);
390: *intptr = *intptr + 1;
1.17 markus 391: }
392: break;
393:
394: case oUser:
395: charptr = &options->user;
396: parse_string:
397: cp = strtok(NULL, WHITESPACE);
398: if (!cp)
399: fatal("%.200s line %d: Missing argument.", filename, linenum);
400: if (*activep && *charptr == NULL)
401: *charptr = xstrdup(cp);
402: break;
403:
404: case oGlobalKnownHostsFile:
405: charptr = &options->system_hostfile;
406: goto parse_string;
407:
408: case oUserKnownHostsFile:
409: charptr = &options->user_hostfile;
410: goto parse_string;
411:
1.27 markus 412: case oGlobalKnownHostsFile2:
413: charptr = &options->system_hostfile2;
414: goto parse_string;
415:
416: case oUserKnownHostsFile2:
417: charptr = &options->user_hostfile2;
418: goto parse_string;
419:
1.17 markus 420: case oHostName:
421: charptr = &options->hostname;
422: goto parse_string;
423:
424: case oProxyCommand:
425: charptr = &options->proxy_command;
426: string = xstrdup("");
427: while ((cp = strtok(NULL, WHITESPACE)) != NULL) {
428: string = xrealloc(string, strlen(string) + strlen(cp) + 2);
429: strcat(string, " ");
430: strcat(string, cp);
431: }
432: if (*activep && *charptr == NULL)
433: *charptr = string;
434: else
435: xfree(string);
436: return 0;
437:
438: case oPort:
439: intptr = &options->port;
440: parse_int:
441: cp = strtok(NULL, WHITESPACE);
442: if (!cp)
443: fatal("%.200s line %d: Missing argument.", filename, linenum);
444: if (cp[0] < '0' || cp[0] > '9')
445: fatal("%.200s line %d: Bad number.", filename, linenum);
1.21 markus 446:
447: /* Octal, decimal, or hex format? */
448: value = strtol(cp, &cp2, 0);
449: if (cp == cp2)
450: fatal("%.200s line %d: Bad number.", filename, linenum);
1.17 markus 451: if (*activep && *intptr == -1)
452: *intptr = value;
453: break;
454:
455: case oConnectionAttempts:
456: intptr = &options->connection_attempts;
457: goto parse_int;
458:
459: case oCipher:
460: intptr = &options->cipher;
461: cp = strtok(NULL, WHITESPACE);
462: value = cipher_number(cp);
463: if (value == -1)
464: fatal("%.200s line %d: Bad cipher '%s'.",
465: filename, linenum, cp ? cp : "<NONE>");
466: if (*activep && *intptr == -1)
467: *intptr = value;
468: break;
469:
1.25 markus 470: case oCiphers:
471: cp = strtok(NULL, WHITESPACE);
472: if (!ciphers_valid(cp))
473: fatal("%.200s line %d: Bad cipher spec '%s'.",
474: filename, linenum, cp ? cp : "<NONE>");
475: if (*activep && options->ciphers == NULL)
476: options->ciphers = xstrdup(cp);
477: break;
478:
479: case oProtocol:
480: intptr = &options->protocol;
481: cp = strtok(NULL, WHITESPACE);
482: value = proto_spec(cp);
483: if (value == SSH_PROTO_UNKNOWN)
484: fatal("%.200s line %d: Bad protocol spec '%s'.",
485: filename, linenum, cp ? cp : "<NONE>");
486: if (*activep && *intptr == SSH_PROTO_UNKNOWN)
487: *intptr = value;
488: break;
489:
1.17 markus 490: case oLogLevel:
491: intptr = (int *) &options->log_level;
492: cp = strtok(NULL, WHITESPACE);
493: value = log_level_number(cp);
494: if (value == (LogLevel) - 1)
495: fatal("%.200s line %d: unsupported log level '%s'\n",
496: filename, linenum, cp ? cp : "<NONE>");
497: if (*activep && (LogLevel) * intptr == -1)
498: *intptr = (LogLevel) value;
499: break;
500:
501: case oRemoteForward:
502: cp = strtok(NULL, WHITESPACE);
503: if (!cp)
504: fatal("%.200s line %d: Missing argument.", filename, linenum);
505: if (cp[0] < '0' || cp[0] > '9')
506: fatal("%.200s line %d: Badly formatted port number.",
507: filename, linenum);
508: fwd_port = atoi(cp);
509: cp = strtok(NULL, WHITESPACE);
510: if (!cp)
511: fatal("%.200s line %d: Missing second argument.",
512: filename, linenum);
1.22 markus 513: if (sscanf(cp, "%255[^:]:%hu", buf, &fwd_host_port) != 2)
1.17 markus 514: fatal("%.200s line %d: Badly formatted host:port.",
515: filename, linenum);
516: if (*activep)
517: add_remote_forward(options, fwd_port, buf, fwd_host_port);
518: break;
519:
520: case oLocalForward:
521: cp = strtok(NULL, WHITESPACE);
522: if (!cp)
523: fatal("%.200s line %d: Missing argument.", filename, linenum);
524: if (cp[0] < '0' || cp[0] > '9')
525: fatal("%.200s line %d: Badly formatted port number.",
526: filename, linenum);
527: fwd_port = atoi(cp);
528: cp = strtok(NULL, WHITESPACE);
529: if (!cp)
530: fatal("%.200s line %d: Missing second argument.",
531: filename, linenum);
1.22 markus 532: if (sscanf(cp, "%255[^:]:%hu", buf, &fwd_host_port) != 2)
1.17 markus 533: fatal("%.200s line %d: Badly formatted host:port.",
534: filename, linenum);
535: if (*activep)
536: add_local_forward(options, fwd_port, buf, fwd_host_port);
537: break;
538:
539: case oHost:
540: *activep = 0;
541: while ((cp = strtok(NULL, WHITESPACE)) != NULL)
542: if (match_pattern(host, cp)) {
543: debug("Applying options for %.100s", cp);
544: *activep = 1;
545: break;
546: }
1.19 markus 547: /* Avoid garbage check below, as strtok already returned NULL. */
1.17 markus 548: return 0;
549:
550: case oEscapeChar:
551: intptr = &options->escape_char;
552: cp = strtok(NULL, WHITESPACE);
553: if (!cp)
554: fatal("%.200s line %d: Missing argument.", filename, linenum);
555: if (cp[0] == '^' && cp[2] == 0 &&
556: (unsigned char) cp[1] >= 64 && (unsigned char) cp[1] < 128)
557: value = (unsigned char) cp[1] & 31;
558: else if (strlen(cp) == 1)
559: value = (unsigned char) cp[0];
560: else if (strcmp(cp, "none") == 0)
561: value = -2;
562: else {
563: fatal("%.200s line %d: Bad escape character.",
564: filename, linenum);
565: /* NOTREACHED */
566: value = 0; /* Avoid compiler warning. */
567: }
568: if (*activep && *intptr == -1)
569: *intptr = value;
570: break;
571:
572: default:
573: fatal("process_config_line: Unimplemented opcode %d", opcode);
574: }
575:
576: /* Check that there is no garbage at end of line. */
577: if (strtok(NULL, WHITESPACE) != NULL)
578: fatal("%.200s line %d: garbage at end of line.",
579: filename, linenum);
580: return 0;
1.1 deraadt 581: }
582:
583:
1.19 markus 584: /*
585: * Reads the config file and modifies the options accordingly. Options
586: * should already be initialized before this call. This never returns if
587: * there is an error. If the file does not exist, this returns immediately.
588: */
1.1 deraadt 589:
1.26 markus 590: void
1.17 markus 591: read_config_file(const char *filename, const char *host, Options *options)
1.1 deraadt 592: {
1.17 markus 593: FILE *f;
594: char line[1024];
595: int active, linenum;
596: int bad_options = 0;
597:
598: /* Open the file. */
599: f = fopen(filename, "r");
600: if (!f)
601: return;
602:
603: debug("Reading configuration data %.200s", filename);
604:
1.19 markus 605: /*
606: * Mark that we are now processing the options. This flag is turned
607: * on/off by Host specifications.
608: */
1.17 markus 609: active = 1;
610: linenum = 0;
611: while (fgets(line, sizeof(line), f)) {
612: /* Update line number counter. */
613: linenum++;
614: if (process_config_line(options, host, line, filename, linenum, &active) != 0)
615: bad_options++;
616: }
617: fclose(f);
618: if (bad_options > 0)
619: fatal("%s: terminating, %d bad configuration options\n",
620: filename, bad_options);
1.1 deraadt 621: }
622:
1.19 markus 623: /*
624: * Initializes options to special values that indicate that they have not yet
625: * been set. Read_config_file will only set options with this value. Options
626: * are processed in the following order: command line, user config file,
627: * system config file. Last, fill_default_options is called.
628: */
1.1 deraadt 629:
1.26 markus 630: void
1.17 markus 631: initialize_options(Options * options)
1.1 deraadt 632: {
1.17 markus 633: memset(options, 'X', sizeof(*options));
634: options->forward_agent = -1;
635: options->forward_x11 = -1;
636: options->gateway_ports = -1;
637: options->use_privileged_port = -1;
638: options->rhosts_authentication = -1;
639: options->rsa_authentication = -1;
640: options->skey_authentication = -1;
1.1 deraadt 641: #ifdef KRB4
1.17 markus 642: options->kerberos_authentication = -1;
1.1 deraadt 643: #endif
1.5 dugsong 644: #ifdef AFS
1.17 markus 645: options->kerberos_tgt_passing = -1;
646: options->afs_token_passing = -1;
1.1 deraadt 647: #endif
1.17 markus 648: options->password_authentication = -1;
649: options->rhosts_rsa_authentication = -1;
650: options->fallback_to_rsh = -1;
651: options->use_rsh = -1;
652: options->batch_mode = -1;
653: options->check_host_ip = -1;
654: options->strict_host_key_checking = -1;
655: options->compression = -1;
656: options->keepalives = -1;
657: options->compression_level = -1;
658: options->port = -1;
659: options->connection_attempts = -1;
660: options->number_of_password_prompts = -1;
661: options->cipher = -1;
1.25 markus 662: options->ciphers = NULL;
663: options->protocol = SSH_PROTO_UNKNOWN;
1.17 markus 664: options->num_identity_files = 0;
1.27 markus 665: options->num_identity_files2 = 0;
1.17 markus 666: options->hostname = NULL;
667: options->proxy_command = NULL;
668: options->user = NULL;
669: options->escape_char = -1;
670: options->system_hostfile = NULL;
671: options->user_hostfile = NULL;
1.27 markus 672: options->system_hostfile2 = NULL;
673: options->user_hostfile2 = NULL;
1.17 markus 674: options->num_local_forwards = 0;
675: options->num_remote_forwards = 0;
676: options->log_level = (LogLevel) - 1;
1.1 deraadt 677: }
678:
1.19 markus 679: /*
680: * Called after processing other sources of option data, this fills those
681: * options for which no value has been specified with their default values.
682: */
1.1 deraadt 683:
1.26 markus 684: void
1.17 markus 685: fill_default_options(Options * options)
1.1 deraadt 686: {
1.17 markus 687: if (options->forward_agent == -1)
688: options->forward_agent = 1;
689: if (options->forward_x11 == -1)
1.23 markus 690: options->forward_x11 = 0;
1.17 markus 691: if (options->gateway_ports == -1)
692: options->gateway_ports = 0;
693: if (options->use_privileged_port == -1)
694: options->use_privileged_port = 1;
695: if (options->rhosts_authentication == -1)
696: options->rhosts_authentication = 1;
697: if (options->rsa_authentication == -1)
698: options->rsa_authentication = 1;
699: if (options->skey_authentication == -1)
700: options->skey_authentication = 0;
1.1 deraadt 701: #ifdef KRB4
1.17 markus 702: if (options->kerberos_authentication == -1)
703: options->kerberos_authentication = 1;
1.5 dugsong 704: #endif /* KRB4 */
705: #ifdef AFS
1.17 markus 706: if (options->kerberos_tgt_passing == -1)
707: options->kerberos_tgt_passing = 1;
708: if (options->afs_token_passing == -1)
709: options->afs_token_passing = 1;
1.5 dugsong 710: #endif /* AFS */
1.17 markus 711: if (options->password_authentication == -1)
712: options->password_authentication = 1;
713: if (options->rhosts_rsa_authentication == -1)
714: options->rhosts_rsa_authentication = 1;
715: if (options->fallback_to_rsh == -1)
716: options->fallback_to_rsh = 1;
717: if (options->use_rsh == -1)
718: options->use_rsh = 0;
719: if (options->batch_mode == -1)
720: options->batch_mode = 0;
721: if (options->check_host_ip == -1)
722: options->check_host_ip = 1;
723: if (options->strict_host_key_checking == -1)
724: options->strict_host_key_checking = 2; /* 2 is default */
725: if (options->compression == -1)
726: options->compression = 0;
727: if (options->keepalives == -1)
728: options->keepalives = 1;
729: if (options->compression_level == -1)
730: options->compression_level = 6;
731: if (options->port == -1)
732: options->port = 0; /* Filled in ssh_connect. */
733: if (options->connection_attempts == -1)
734: options->connection_attempts = 4;
735: if (options->number_of_password_prompts == -1)
736: options->number_of_password_prompts = 3;
737: /* Selected in ssh_login(). */
738: if (options->cipher == -1)
739: options->cipher = SSH_CIPHER_NOT_SET;
1.25 markus 740: if (options->protocol == SSH_PROTO_UNKNOWN)
1.28 markus 741: options->protocol = SSH_PROTO_1|SSH_PROTO_2|SSH_PROTO_1_PREFERRED;
1.17 markus 742: if (options->num_identity_files == 0) {
743: options->identity_files[0] =
744: xmalloc(2 + strlen(SSH_CLIENT_IDENTITY) + 1);
745: sprintf(options->identity_files[0], "~/%.100s", SSH_CLIENT_IDENTITY);
746: options->num_identity_files = 1;
747: }
1.27 markus 748: if (options->num_identity_files2 == 0) {
749: options->identity_files2[0] =
1.29 ! markus 750: xmalloc(2 + strlen(SSH_CLIENT_ID_DSA) + 1);
! 751: sprintf(options->identity_files2[0], "~/%.100s", SSH_CLIENT_ID_DSA);
1.27 markus 752: options->num_identity_files2 = 1;
753: }
1.17 markus 754: if (options->escape_char == -1)
755: options->escape_char = '~';
756: if (options->system_hostfile == NULL)
757: options->system_hostfile = SSH_SYSTEM_HOSTFILE;
758: if (options->user_hostfile == NULL)
759: options->user_hostfile = SSH_USER_HOSTFILE;
1.27 markus 760: if (options->system_hostfile2 == NULL)
761: options->system_hostfile2 = SSH_SYSTEM_HOSTFILE2;
762: if (options->user_hostfile2 == NULL)
763: options->user_hostfile2 = SSH_USER_HOSTFILE2;
1.17 markus 764: if (options->log_level == (LogLevel) - 1)
765: options->log_level = SYSLOG_LEVEL_INFO;
766: /* options->proxy_command should not be set by default */
767: /* options->user will be set in the main program if appropriate */
768: /* options->hostname will be set in the main program if appropriate */
1.1 deraadt 769: }
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