Annotation of src/usr.bin/ssh/readconf.c, Revision 1.17
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"
1.17 ! markus 17: RCSID("$Id: readconf.c,v 1.16 1999/11/22 21:52:41 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:
1.17 ! markus 89: typedef enum {
! 90: oBadOption,
! 91: oForwardAgent, oForwardX11, oGatewayPorts, oRhostsAuthentication,
! 92: oPasswordAuthentication, oRSAAuthentication, oFallBackToRsh, oUseRsh,
! 93: oSkeyAuthentication,
1.1 deraadt 94: #ifdef KRB4
1.17 ! markus 95: oKerberosAuthentication,
1.1 deraadt 96: #endif /* KRB4 */
97: #ifdef AFS
1.17 ! markus 98: oKerberosTgtPassing, oAFSTokenPassing,
1.1 deraadt 99: #endif
1.17 ! markus 100: oIdentityFile, oHostName, oPort, oCipher, oRemoteForward, oLocalForward,
! 101: oUser, oHost, oEscapeChar, oRhostsRSAAuthentication, oProxyCommand,
! 102: oGlobalKnownHostsFile, oUserKnownHostsFile, oConnectionAttempts,
! 103: oBatchMode, oCheckHostIP, oStrictHostKeyChecking, oCompression,
! 104: oCompressionLevel, oKeepAlives, oNumberOfPasswordPrompts, oTISAuthentication,
! 105: oUsePrivilegedPort, oLogLevel
1.1 deraadt 106: } OpCodes;
107:
108: /* Textual representations of the tokens. */
109:
1.17 ! markus 110: static struct {
! 111: const char *name;
! 112: OpCodes opcode;
! 113: } keywords[] = {
! 114: { "forwardagent", oForwardAgent },
! 115: { "forwardx11", oForwardX11 },
! 116: { "gatewayports", oGatewayPorts },
! 117: { "useprivilegedport", oUsePrivilegedPort },
! 118: { "rhostsauthentication", oRhostsAuthentication },
! 119: { "passwordauthentication", oPasswordAuthentication },
! 120: { "rsaauthentication", oRSAAuthentication },
! 121: { "skeyauthentication", oSkeyAuthentication },
1.1 deraadt 122: #ifdef KRB4
1.17 ! markus 123: { "kerberosauthentication", oKerberosAuthentication },
1.1 deraadt 124: #endif /* KRB4 */
1.5 dugsong 125: #ifdef AFS
1.17 ! markus 126: { "kerberostgtpassing", oKerberosTgtPassing },
! 127: { "afstokenpassing", oAFSTokenPassing },
1.1 deraadt 128: #endif
1.17 ! markus 129: { "fallbacktorsh", oFallBackToRsh },
! 130: { "usersh", oUseRsh },
! 131: { "identityfile", oIdentityFile },
! 132: { "hostname", oHostName },
! 133: { "proxycommand", oProxyCommand },
! 134: { "port", oPort },
! 135: { "cipher", oCipher },
! 136: { "remoteforward", oRemoteForward },
! 137: { "localforward", oLocalForward },
! 138: { "user", oUser },
! 139: { "host", oHost },
! 140: { "escapechar", oEscapeChar },
! 141: { "rhostsrsaauthentication", oRhostsRSAAuthentication },
! 142: { "globalknownhostsfile", oGlobalKnownHostsFile },
! 143: { "userknownhostsfile", oUserKnownHostsFile },
! 144: { "connectionattempts", oConnectionAttempts },
! 145: { "batchmode", oBatchMode },
! 146: { "checkhostip", oCheckHostIP },
! 147: { "stricthostkeychecking", oStrictHostKeyChecking },
! 148: { "compression", oCompression },
! 149: { "compressionlevel", oCompressionLevel },
! 150: { "keepalive", oKeepAlives },
! 151: { "numberofpasswordprompts", oNumberOfPasswordPrompts },
! 152: { "tisauthentication", oTISAuthentication },
! 153: { "loglevel", oLogLevel },
! 154: { NULL, 0 }
1.13 markus 155: };
156:
1.1 deraadt 157: /* Characters considered whitespace in strtok calls. */
158: #define WHITESPACE " \t\r\n"
159:
160:
161: /* Adds a local TCP/IP port forward to options. Never returns if there
162: is an error. */
163:
1.17 ! markus 164: void
! 165: add_local_forward(Options *options, int port, const char *host,
! 166: int host_port)
1.1 deraadt 167: {
1.17 ! markus 168: Forward *fwd;
! 169: extern uid_t original_real_uid;
! 170: if ((port & 0xffff) != port)
! 171: fatal("Requested forwarding of nonexistent port %d.", port);
! 172: if (port < IPPORT_RESERVED && original_real_uid != 0)
! 173: fatal("Privileged ports can only be forwarded by root.\n");
! 174: if (options->num_local_forwards >= SSH_MAX_FORWARDS_PER_DIRECTION)
! 175: fatal("Too many local forwards (max %d).", SSH_MAX_FORWARDS_PER_DIRECTION);
! 176: fwd = &options->local_forwards[options->num_local_forwards++];
! 177: fwd->port = port;
! 178: fwd->host = xstrdup(host);
! 179: fwd->host_port = host_port;
1.1 deraadt 180: }
181:
182: /* Adds a remote TCP/IP port forward to options. Never returns if there
183: is an error. */
184:
1.17 ! markus 185: void
! 186: add_remote_forward(Options *options, int port, const char *host,
! 187: int host_port)
1.1 deraadt 188: {
1.17 ! markus 189: Forward *fwd;
! 190: if (options->num_remote_forwards >= SSH_MAX_FORWARDS_PER_DIRECTION)
! 191: fatal("Too many remote forwards (max %d).",
! 192: SSH_MAX_FORWARDS_PER_DIRECTION);
! 193: fwd = &options->remote_forwards[options->num_remote_forwards++];
! 194: fwd->port = port;
! 195: fwd->host = xstrdup(host);
! 196: fwd->host_port = host_port;
1.1 deraadt 197: }
198:
199: /* Returns the number of the token pointed to by cp of length len.
200: Never returns if the token is not known. */
201:
1.17 ! markus 202: static OpCodes
! 203: parse_token(const char *cp, const char *filename, int linenum)
1.1 deraadt 204: {
1.17 ! markus 205: unsigned int i;
1.1 deraadt 206:
1.17 ! markus 207: for (i = 0; keywords[i].name; i++)
! 208: if (strcmp(cp, keywords[i].name) == 0)
! 209: return keywords[i].opcode;
! 210:
! 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,
1.17 ! markus 221: char *line, const char *filename, int linenum,
! 222: int *activep)
1.1 deraadt 223: {
1.17 ! markus 224: char buf[256], *cp, *string, **charptr;
! 225: int opcode, *intptr, value, fwd_port, fwd_host_port;
1.1 deraadt 226:
1.17 ! markus 227: /* Skip leading whitespace. */
! 228: cp = line + strspn(line, WHITESPACE);
! 229: if (!*cp || *cp == '\n' || *cp == '#')
! 230: return 0;
! 231:
! 232: /* Get the keyword. (Each line is supposed to begin with a
! 233: keyword). */
! 234: cp = strtok(cp, WHITESPACE);
! 235: {
! 236: char *t = cp;
! 237: for (; *t != 0; t++)
! 238: if ('A' <= *t && *t <= 'Z')
! 239: *t = *t - 'A' + 'a'; /* tolower */
! 240:
! 241: }
! 242: opcode = parse_token(cp, filename, linenum);
! 243:
! 244: switch (opcode) {
! 245: case oBadOption:
! 246: return -1; /* don't panic, but count bad options */
! 247: /* NOTREACHED */
! 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;
! 268:
! 269: case oGatewayPorts:
! 270: intptr = &options->gateway_ports;
! 271: goto parse_flag;
! 272:
! 273: case oUsePrivilegedPort:
! 274: intptr = &options->use_privileged_port;
! 275: goto parse_flag;
! 276:
! 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:
! 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;
1.16 markus 298:
1.1 deraadt 299: #ifdef KRB4
1.17 ! markus 300: case oKerberosAuthentication:
! 301: intptr = &options->kerberos_authentication;
! 302: goto parse_flag;
1.1 deraadt 303: #endif /* KRB4 */
304:
1.5 dugsong 305: #ifdef AFS
1.17 ! markus 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;
1.1 deraadt 313: #endif
1.17 ! markus 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;
! 325: goto parse_flag;
! 326:
! 327: case oCheckHostIP:
! 328: intptr = &options->check_host_ip;
! 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:
! 358: case oNumberOfPasswordPrompts:
! 359: intptr = &options->number_of_password_prompts;
! 360: goto parse_int;
! 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: if (options->num_identity_files >= SSH_MAX_IDENTITY_FILES)
! 372: fatal("%.200s line %d: Too many identity files specified (max %d).",
! 373: filename, linenum, SSH_MAX_IDENTITY_FILES);
! 374: options->identity_files[options->num_identity_files++] = xstrdup(cp);
! 375: }
! 376: break;
! 377:
! 378: case oUser:
! 379: charptr = &options->user;
! 380: parse_string:
! 381: cp = strtok(NULL, WHITESPACE);
! 382: if (!cp)
! 383: fatal("%.200s line %d: Missing argument.", filename, linenum);
! 384: if (*activep && *charptr == NULL)
! 385: *charptr = xstrdup(cp);
! 386: break;
! 387:
! 388: case oGlobalKnownHostsFile:
! 389: charptr = &options->system_hostfile;
! 390: goto parse_string;
! 391:
! 392: case oUserKnownHostsFile:
! 393: charptr = &options->user_hostfile;
! 394: goto parse_string;
! 395:
! 396: case oHostName:
! 397: charptr = &options->hostname;
! 398: goto parse_string;
! 399:
! 400: case oProxyCommand:
! 401: charptr = &options->proxy_command;
! 402: string = xstrdup("");
! 403: while ((cp = strtok(NULL, WHITESPACE)) != NULL) {
! 404: string = xrealloc(string, strlen(string) + strlen(cp) + 2);
! 405: strcat(string, " ");
! 406: strcat(string, cp);
! 407: }
! 408: if (*activep && *charptr == NULL)
! 409: *charptr = string;
! 410: else
! 411: xfree(string);
! 412: return 0;
! 413:
! 414: case oPort:
! 415: intptr = &options->port;
! 416: parse_int:
! 417: cp = strtok(NULL, WHITESPACE);
! 418: if (!cp)
! 419: fatal("%.200s line %d: Missing argument.", filename, linenum);
! 420: if (cp[0] < '0' || cp[0] > '9')
! 421: fatal("%.200s line %d: Bad number.", filename, linenum);
1.1 deraadt 422: #if 0
1.17 ! markus 423: value = atoi(cp);
1.1 deraadt 424: #else
1.17 ! markus 425: {
! 426: char *ptr;
! 427: value = strtol(cp, &ptr, 0); /* Octal, decimal, or
! 428: hex format? */
! 429: if (cp == ptr)
! 430: fatal("%.200s line %d: Bad number.", filename, linenum);
! 431: }
1.1 deraadt 432: #endif
1.17 ! markus 433: if (*activep && *intptr == -1)
! 434: *intptr = value;
! 435: break;
! 436:
! 437: case oConnectionAttempts:
! 438: intptr = &options->connection_attempts;
! 439: goto parse_int;
! 440:
! 441: case oCipher:
! 442: intptr = &options->cipher;
! 443: cp = strtok(NULL, WHITESPACE);
! 444: value = cipher_number(cp);
! 445: if (value == -1)
! 446: fatal("%.200s line %d: Bad cipher '%s'.",
! 447: filename, linenum, cp ? cp : "<NONE>");
! 448: if (*activep && *intptr == -1)
! 449: *intptr = value;
! 450: break;
! 451:
! 452: case oLogLevel:
! 453: intptr = (int *) &options->log_level;
! 454: cp = strtok(NULL, WHITESPACE);
! 455: value = log_level_number(cp);
! 456: if (value == (LogLevel) - 1)
! 457: fatal("%.200s line %d: unsupported log level '%s'\n",
! 458: filename, linenum, cp ? cp : "<NONE>");
! 459: if (*activep && (LogLevel) * intptr == -1)
! 460: *intptr = (LogLevel) value;
! 461: break;
! 462:
! 463: case oRemoteForward:
! 464: cp = strtok(NULL, WHITESPACE);
! 465: if (!cp)
! 466: fatal("%.200s line %d: Missing argument.", filename, linenum);
! 467: if (cp[0] < '0' || cp[0] > '9')
! 468: fatal("%.200s line %d: Badly formatted port number.",
! 469: filename, linenum);
! 470: fwd_port = atoi(cp);
! 471: cp = strtok(NULL, WHITESPACE);
! 472: if (!cp)
! 473: fatal("%.200s line %d: Missing second argument.",
! 474: filename, linenum);
! 475: if (sscanf(cp, "%255[^:]:%d", buf, &fwd_host_port) != 2)
! 476: fatal("%.200s line %d: Badly formatted host:port.",
! 477: filename, linenum);
! 478: if (*activep)
! 479: add_remote_forward(options, fwd_port, buf, fwd_host_port);
! 480: break;
! 481:
! 482: case oLocalForward:
! 483: cp = strtok(NULL, WHITESPACE);
! 484: if (!cp)
! 485: fatal("%.200s line %d: Missing argument.", filename, linenum);
! 486: if (cp[0] < '0' || cp[0] > '9')
! 487: fatal("%.200s line %d: Badly formatted port number.",
! 488: filename, linenum);
! 489: fwd_port = atoi(cp);
! 490: cp = strtok(NULL, WHITESPACE);
! 491: if (!cp)
! 492: fatal("%.200s line %d: Missing second argument.",
! 493: filename, linenum);
! 494: if (sscanf(cp, "%255[^:]:%d", buf, &fwd_host_port) != 2)
! 495: fatal("%.200s line %d: Badly formatted host:port.",
! 496: filename, linenum);
! 497: if (*activep)
! 498: add_local_forward(options, fwd_port, buf, fwd_host_port);
! 499: break;
! 500:
! 501: case oHost:
! 502: *activep = 0;
! 503: while ((cp = strtok(NULL, WHITESPACE)) != NULL)
! 504: if (match_pattern(host, cp)) {
! 505: debug("Applying options for %.100s", cp);
! 506: *activep = 1;
! 507: break;
! 508: }
! 509: /* Avoid garbage check below, as strtok already returned
! 510: NULL. */
! 511: return 0;
! 512:
! 513: case oEscapeChar:
! 514: intptr = &options->escape_char;
! 515: cp = strtok(NULL, WHITESPACE);
! 516: if (!cp)
! 517: fatal("%.200s line %d: Missing argument.", filename, linenum);
! 518: if (cp[0] == '^' && cp[2] == 0 &&
! 519: (unsigned char) cp[1] >= 64 && (unsigned char) cp[1] < 128)
! 520: value = (unsigned char) cp[1] & 31;
! 521: else if (strlen(cp) == 1)
! 522: value = (unsigned char) cp[0];
! 523: else if (strcmp(cp, "none") == 0)
! 524: value = -2;
! 525: else {
! 526: fatal("%.200s line %d: Bad escape character.",
! 527: filename, linenum);
! 528: /* NOTREACHED */
! 529: value = 0; /* Avoid compiler warning. */
! 530: }
! 531: if (*activep && *intptr == -1)
! 532: *intptr = value;
! 533: break;
! 534:
! 535: default:
! 536: fatal("process_config_line: Unimplemented opcode %d", opcode);
! 537: }
! 538:
! 539: /* Check that there is no garbage at end of line. */
! 540: if (strtok(NULL, WHITESPACE) != NULL)
! 541: fatal("%.200s line %d: garbage at end of line.",
! 542: filename, linenum);
! 543: return 0;
1.1 deraadt 544: }
545:
546:
547: /* Reads the config file and modifies the options accordingly. Options should
548: already be initialized before this call. This never returns if there
549: is an error. If the file does not exist, this returns immediately. */
550:
1.17 ! markus 551: void
! 552: read_config_file(const char *filename, const char *host, Options *options)
1.1 deraadt 553: {
1.17 ! markus 554: FILE *f;
! 555: char line[1024];
! 556: int active, linenum;
! 557: int bad_options = 0;
! 558:
! 559: /* Open the file. */
! 560: f = fopen(filename, "r");
! 561: if (!f)
! 562: return;
! 563:
! 564: debug("Reading configuration data %.200s", filename);
! 565:
! 566: /* Mark that we are now processing the options. This flag is
! 567: turned on/off by Host specifications. */
! 568: active = 1;
! 569: linenum = 0;
! 570: while (fgets(line, sizeof(line), f)) {
! 571: /* Update line number counter. */
! 572: linenum++;
! 573: if (process_config_line(options, host, line, filename, linenum, &active) != 0)
! 574: bad_options++;
! 575: }
! 576: fclose(f);
! 577: if (bad_options > 0)
! 578: fatal("%s: terminating, %d bad configuration options\n",
! 579: filename, bad_options);
1.1 deraadt 580: }
581:
582: /* Initializes options to special values that indicate that they have not
583: yet been set. Read_config_file will only set options with this value.
584: Options are processed in the following order: command line, user config
585: file, system config file. Last, fill_default_options is called. */
586:
1.17 ! markus 587: void
! 588: initialize_options(Options * options)
1.1 deraadt 589: {
1.17 ! markus 590: memset(options, 'X', sizeof(*options));
! 591: options->forward_agent = -1;
! 592: options->forward_x11 = -1;
! 593: options->gateway_ports = -1;
! 594: options->use_privileged_port = -1;
! 595: options->rhosts_authentication = -1;
! 596: options->rsa_authentication = -1;
! 597: options->skey_authentication = -1;
1.1 deraadt 598: #ifdef KRB4
1.17 ! markus 599: options->kerberos_authentication = -1;
1.1 deraadt 600: #endif
1.5 dugsong 601: #ifdef AFS
1.17 ! markus 602: options->kerberos_tgt_passing = -1;
! 603: options->afs_token_passing = -1;
1.1 deraadt 604: #endif
1.17 ! markus 605: options->password_authentication = -1;
! 606: options->rhosts_rsa_authentication = -1;
! 607: options->fallback_to_rsh = -1;
! 608: options->use_rsh = -1;
! 609: options->batch_mode = -1;
! 610: options->check_host_ip = -1;
! 611: options->strict_host_key_checking = -1;
! 612: options->compression = -1;
! 613: options->keepalives = -1;
! 614: options->compression_level = -1;
! 615: options->port = -1;
! 616: options->connection_attempts = -1;
! 617: options->number_of_password_prompts = -1;
! 618: options->cipher = -1;
! 619: options->num_identity_files = 0;
! 620: options->hostname = NULL;
! 621: options->proxy_command = NULL;
! 622: options->user = NULL;
! 623: options->escape_char = -1;
! 624: options->system_hostfile = NULL;
! 625: options->user_hostfile = NULL;
! 626: options->num_local_forwards = 0;
! 627: options->num_remote_forwards = 0;
! 628: options->log_level = (LogLevel) - 1;
1.1 deraadt 629: }
630:
631: /* Called after processing other sources of option data, this fills those
632: options for which no value has been specified with their default values. */
633:
1.17 ! markus 634: void
! 635: fill_default_options(Options * options)
1.1 deraadt 636: {
1.17 ! markus 637: if (options->forward_agent == -1)
! 638: options->forward_agent = 1;
! 639: if (options->forward_x11 == -1)
! 640: options->forward_x11 = 1;
! 641: if (options->gateway_ports == -1)
! 642: options->gateway_ports = 0;
! 643: if (options->use_privileged_port == -1)
! 644: options->use_privileged_port = 1;
! 645: if (options->rhosts_authentication == -1)
! 646: options->rhosts_authentication = 1;
! 647: if (options->rsa_authentication == -1)
! 648: options->rsa_authentication = 1;
! 649: if (options->skey_authentication == -1)
! 650: options->skey_authentication = 0;
1.1 deraadt 651: #ifdef KRB4
1.17 ! markus 652: if (options->kerberos_authentication == -1)
! 653: options->kerberos_authentication = 1;
1.5 dugsong 654: #endif /* KRB4 */
655: #ifdef AFS
1.17 ! markus 656: if (options->kerberos_tgt_passing == -1)
! 657: options->kerberos_tgt_passing = 1;
! 658: if (options->afs_token_passing == -1)
! 659: options->afs_token_passing = 1;
1.5 dugsong 660: #endif /* AFS */
1.17 ! markus 661: if (options->password_authentication == -1)
! 662: options->password_authentication = 1;
! 663: if (options->rhosts_rsa_authentication == -1)
! 664: options->rhosts_rsa_authentication = 1;
! 665: if (options->fallback_to_rsh == -1)
! 666: options->fallback_to_rsh = 1;
! 667: if (options->use_rsh == -1)
! 668: options->use_rsh = 0;
! 669: if (options->batch_mode == -1)
! 670: options->batch_mode = 0;
! 671: if (options->check_host_ip == -1)
! 672: options->check_host_ip = 1;
! 673: if (options->strict_host_key_checking == -1)
! 674: options->strict_host_key_checking = 2; /* 2 is default */
! 675: if (options->compression == -1)
! 676: options->compression = 0;
! 677: if (options->keepalives == -1)
! 678: options->keepalives = 1;
! 679: if (options->compression_level == -1)
! 680: options->compression_level = 6;
! 681: if (options->port == -1)
! 682: options->port = 0; /* Filled in ssh_connect. */
! 683: if (options->connection_attempts == -1)
! 684: options->connection_attempts = 4;
! 685: if (options->number_of_password_prompts == -1)
! 686: options->number_of_password_prompts = 3;
! 687: /* Selected in ssh_login(). */
! 688: if (options->cipher == -1)
! 689: options->cipher = SSH_CIPHER_NOT_SET;
! 690: if (options->num_identity_files == 0) {
! 691: options->identity_files[0] =
! 692: xmalloc(2 + strlen(SSH_CLIENT_IDENTITY) + 1);
! 693: sprintf(options->identity_files[0], "~/%.100s", SSH_CLIENT_IDENTITY);
! 694: options->num_identity_files = 1;
! 695: }
! 696: if (options->escape_char == -1)
! 697: options->escape_char = '~';
! 698: if (options->system_hostfile == NULL)
! 699: options->system_hostfile = SSH_SYSTEM_HOSTFILE;
! 700: if (options->user_hostfile == NULL)
! 701: options->user_hostfile = SSH_USER_HOSTFILE;
! 702: if (options->log_level == (LogLevel) - 1)
! 703: options->log_level = SYSLOG_LEVEL_INFO;
! 704: /* options->proxy_command should not be set by default */
! 705: /* options->user will be set in the main program if appropriate */
! 706: /* options->hostname will be set in the main program if appropriate */
1.1 deraadt 707: }
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