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-rw-r--r--ssh.c132
1 files changed, 69 insertions, 63 deletions
diff --git a/ssh.c b/ssh.c
index 216c0be30..5ec3cfcb4 100644
--- a/ssh.c
+++ b/ssh.c
@@ -39,7 +39,7 @@
39 */ 39 */
40 40
41#include "includes.h" 41#include "includes.h"
42RCSID("$OpenBSD: ssh.c,v 1.127 2001/06/26 20:14:11 markus Exp $"); 42RCSID("$OpenBSD: ssh.c,v 1.128 2001/07/09 05:58:47 fgsch Exp $");
43 43
44#include <openssl/evp.h> 44#include <openssl/evp.h>
45#include <openssl/err.h> 45#include <openssl/err.h>
@@ -252,9 +252,9 @@ static void load_public_identity_files(void);
252int 252int
253main(int ac, char **av) 253main(int ac, char **av)
254{ 254{
255 int i, opt, optind, exit_status, ok; 255 int i, opt, exit_status, ok;
256 u_short fwd_port, fwd_host_port; 256 u_short fwd_port, fwd_host_port;
257 char *optarg, *p, *cp, buf[256]; 257 char *p, *cp, buf[256];
258 struct stat st; 258 struct stat st;
259 struct passwd *pw; 259 struct passwd *pw;
260 int dummy; 260 int dummy;
@@ -311,37 +311,9 @@ main(int ac, char **av)
311 /* Parse command-line arguments. */ 311 /* Parse command-line arguments. */
312 host = NULL; 312 host = NULL;
313 313
314 for (optind = 1; optind < ac; optind++) { 314again:
315 if (av[optind][0] != '-') { 315 while ((opt = getopt(ac, av,
316 if (host) 316 "1246nfxXgpaAki:I:tvVqe:c:m:p:l:R:L:D:CNTo:sb:")) != -1) {
317 break;
318 if (strchr(av[optind], '@')) {
319 p = xstrdup(av[optind]);
320 cp = strchr(p, '@');
321 if(cp == NULL || cp == p)
322 usage();
323 options.user = p;
324 *cp = '\0';
325 host = ++cp;
326 } else
327 host = av[optind];
328 continue;
329 }
330 opt = av[optind][1];
331 if (!opt)
332 usage();
333 if (strchr("eilcmpbILRDo", opt)) { /* options with arguments */
334 optarg = av[optind] + 2;
335 if (strcmp(optarg, "") == 0) {
336 if (optind >= ac - 1)
337 usage();
338 optarg = av[++optind];
339 }
340 } else {
341 if (av[optind][2])
342 usage();
343 optarg = NULL;
344 }
345 switch (opt) { 317 switch (opt) {
346 case '1': 318 case '1':
347 options.protocol = SSH_PROTO_1; 319 options.protocol = SSH_PROTO_1;
@@ -388,14 +360,16 @@ main(int ac, char **av)
388#endif 360#endif
389 case 'i': 361 case 'i':
390 if (stat(optarg, &st) < 0) { 362 if (stat(optarg, &st) < 0) {
391 fprintf(stderr, "Warning: Identity file %s does not exist.\n", 363 fprintf(stderr, "Warning: Identity file %s "
392 optarg); 364 "does not exist.\n", optarg);
393 break; 365 break;
394 } 366 }
395 if (options.num_identity_files >= SSH_MAX_IDENTITY_FILES) 367 if (options.num_identity_files >=
396 fatal("Too many identity files specified (max %d)", 368 SSH_MAX_IDENTITY_FILES)
397 SSH_MAX_IDENTITY_FILES); 369 fatal("Too many identity files specified "
398 options.identity_files[options.num_identity_files++] = xstrdup(optarg); 370 "(max %d)", SSH_MAX_IDENTITY_FILES);
371 options.identity_files[options.num_identity_files++] =
372 xstrdup(optarg);
399 break; 373 break;
400 case 'I': 374 case 'I':
401#ifdef SMARTCARD 375#ifdef SMARTCARD
@@ -416,9 +390,8 @@ main(int ac, char **av)
416 } else if (options.log_level < SYSLOG_LEVEL_DEBUG3) { 390 } else if (options.log_level < SYSLOG_LEVEL_DEBUG3) {
417 options.log_level++; 391 options.log_level++;
418 break; 392 break;
419 } else { 393 } else
420 fatal("Too high debugging level."); 394 fatal("Too high debugging level.");
421 }
422 /* fallthrough */ 395 /* fallthrough */
423 case 'V': 396 case 'V':
424 fprintf(stderr, 397 fprintf(stderr,
@@ -435,14 +408,16 @@ main(int ac, char **av)
435 break; 408 break;
436 case 'e': 409 case 'e':
437 if (optarg[0] == '^' && optarg[2] == 0 && 410 if (optarg[0] == '^' && optarg[2] == 0 &&
438 (u_char) optarg[1] >= 64 && (u_char) optarg[1] < 128) 411 (u_char) optarg[1] >= 64 &&
412 (u_char) optarg[1] < 128)
439 options.escape_char = (u_char) optarg[1] & 31; 413 options.escape_char = (u_char) optarg[1] & 31;
440 else if (strlen(optarg) == 1) 414 else if (strlen(optarg) == 1)
441 options.escape_char = (u_char) optarg[0]; 415 options.escape_char = (u_char) optarg[0];
442 else if (strcmp(optarg, "none") == 0) 416 else if (strcmp(optarg, "none") == 0)
443 options.escape_char = SSH_ESCAPECHAR_NONE; 417 options.escape_char = SSH_ESCAPECHAR_NONE;
444 else { 418 else {
445 fprintf(stderr, "Bad escape character '%s'.\n", optarg); 419 fprintf(stderr, "Bad escape character '%s'.\n",
420 optarg);
446 exit(1); 421 exit(1);
447 } 422 }
448 break; 423 break;
@@ -455,23 +430,25 @@ main(int ac, char **av)
455 /* SSH1 only */ 430 /* SSH1 only */
456 options.cipher = cipher_number(optarg); 431 options.cipher = cipher_number(optarg);
457 if (options.cipher == -1) { 432 if (options.cipher == -1) {
458 fprintf(stderr, "Unknown cipher type '%s'\n", optarg); 433 fprintf(stderr,
434 "Unknown cipher type '%s'\n",
435 optarg);
459 exit(1); 436 exit(1);
460 } 437 }
461 if (options.cipher == SSH_CIPHER_3DES) { 438 if (options.cipher == SSH_CIPHER_3DES)
462 options.ciphers = "3des-cbc"; 439 options.ciphers = "3des-cbc";
463 } else if (options.cipher == SSH_CIPHER_BLOWFISH) { 440 else if (options.cipher == SSH_CIPHER_BLOWFISH)
464 options.ciphers = "blowfish-cbc"; 441 options.ciphers = "blowfish-cbc";
465 } else { 442 else
466 options.ciphers = (char *)-1; 443 options.ciphers = (char *)-1;
467 }
468 } 444 }
469 break; 445 break;
470 case 'm': 446 case 'm':
471 if (mac_valid(optarg)) 447 if (mac_valid(optarg))
472 options.macs = xstrdup(optarg); 448 options.macs = xstrdup(optarg);
473 else { 449 else {
474 fprintf(stderr, "Unknown mac type '%s'\n", optarg); 450 fprintf(stderr, "Unknown mac type '%s'\n",
451 optarg);
475 exit(1); 452 exit(1);
476 } 453 }
477 break; 454 break;
@@ -490,28 +467,35 @@ main(int ac, char **av)
490 &fwd_host_port) != 3 && 467 &fwd_host_port) != 3 &&
491 sscanf(optarg, "%hu:%255[^:]:%hu", &fwd_port, buf, 468 sscanf(optarg, "%hu:%255[^:]:%hu", &fwd_port, buf,
492 &fwd_host_port) != 3) { 469 &fwd_host_port) != 3) {
493 fprintf(stderr, "Bad forwarding specification '%s'.\n", optarg); 470 fprintf(stderr,
471 "Bad forwarding specification '%s'.\n",
472 optarg);
494 usage(); 473 usage();
495 /* NOTREACHED */ 474 /* NOTREACHED */
496 } 475 }
497 add_remote_forward(&options, fwd_port, buf, fwd_host_port); 476 add_remote_forward(&options, fwd_port, buf,
477 fwd_host_port);
498 break; 478 break;
499 case 'L': 479 case 'L':
500 if (sscanf(optarg, "%hu/%255[^/]/%hu", &fwd_port, buf, 480 if (sscanf(optarg, "%hu/%255[^/]/%hu", &fwd_port, buf,
501 &fwd_host_port) != 3 && 481 &fwd_host_port) != 3 &&
502 sscanf(optarg, "%hu:%255[^:]:%hu", &fwd_port, buf, 482 sscanf(optarg, "%hu:%255[^:]:%hu", &fwd_port, buf,
503 &fwd_host_port) != 3) { 483 &fwd_host_port) != 3) {
504 fprintf(stderr, "Bad forwarding specification '%s'.\n", optarg); 484 fprintf(stderr,
485 "Bad forwarding specification '%s'.\n",
486 optarg);
505 usage(); 487 usage();
506 /* NOTREACHED */ 488 /* NOTREACHED */
507 } 489 }
508 add_local_forward(&options, fwd_port, buf, fwd_host_port); 490 add_local_forward(&options, fwd_port, buf,
491 fwd_host_port);
509 break; 492 break;
510 493
511 case 'D': 494 case 'D':
512 fwd_port = a2port(optarg); 495 fwd_port = a2port(optarg);
513 if (fwd_port == 0) { 496 if (fwd_port == 0) {
514 fprintf(stderr, "Bad dynamic port '%s'\n", optarg); 497 fprintf(stderr, "Bad dynamic port '%s'\n",
498 optarg);
515 exit(1); 499 exit(1);
516 } 500 }
517 add_local_forward(&options, fwd_port, "socks4", 0); 501 add_local_forward(&options, fwd_port, "socks4", 0);
@@ -529,8 +513,8 @@ main(int ac, char **av)
529 break; 513 break;
530 case 'o': 514 case 'o':
531 dummy = 1; 515 dummy = 1;
532 if (process_config_line(&options, host ? host : "", optarg, 516 if (process_config_line(&options, host ? host : "",
533 "command-line", 0, &dummy) != 0) 517 optarg, "command-line", 0, &dummy) != 0)
534 exit(1); 518 exit(1);
535 break; 519 break;
536 case 's': 520 case 's':
@@ -544,6 +528,28 @@ main(int ac, char **av)
544 } 528 }
545 } 529 }
546 530
531 ac -= optind;
532 av += optind;
533
534 if (ac > 0 && !host && **av != '-') {
535 if (strchr(*av, '@')) {
536 p = xstrdup(*av);
537 cp = strchr(p, '@');
538 if (cp == NULL || cp == p)
539 usage();
540 options.user = p;
541 *cp = '\0';
542 host = ++cp;
543 } else
544 host = *av;
545 ac--, av++;
546 if (ac > 0) {
547 optind = 0;
548 optreset = 1;
549 goto again;
550 }
551 }
552
547 /* Check that we got a host name. */ 553 /* Check that we got a host name. */
548 if (!host) 554 if (!host)
549 usage(); 555 usage();
@@ -559,18 +565,18 @@ main(int ac, char **av)
559 * is no limit on the length of the command, except by the maximum 565 * is no limit on the length of the command, except by the maximum
560 * packet size. Also sets the tty flag if there is no command. 566 * packet size. Also sets the tty flag if there is no command.
561 */ 567 */
562 if (optind == ac) { 568 if (!ac) {
563 /* No command specified - execute shell on a tty. */ 569 /* No command specified - execute shell on a tty. */
564 tty_flag = 1; 570 tty_flag = 1;
565 if (subsystem_flag) { 571 if (subsystem_flag) {
566 fprintf(stderr, "You must specify a subsystem to invoke.\n"); 572 fprintf(stderr,
573 "You must specify a subsystem to invoke.\n");
567 usage(); 574 usage();
568 } 575 }
569 } else { 576 } else {
570 /* A command has been specified. Store it into the 577 /* A command has been specified. Store it into the buffer. */
571 buffer. */ 578 for (i = 0; i < ac; i++) {
572 for (i = optind; i < ac; i++) { 579 if (i)
573 if (i > optind)
574 buffer_append(&command, " ", 1); 580 buffer_append(&command, " ", 1);
575 buffer_append(&command, av[i], strlen(av[i])); 581 buffer_append(&command, av[i], strlen(av[i]));
576 } 582 }
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