1 /* $NetBSD: ssh-add.c,v 1.19 2019/04/20 17:16:40 christos Exp $ */ 2 /* $OpenBSD: ssh-add.c,v 1.138 2019/01/21 12:53:35 djm Exp $ */ 3 /* 4 * Author: Tatu Ylonen <ylo@cs.hut.fi> 5 * Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland 6 * All rights reserved 7 * Adds an identity to the authentication server, or removes an identity. 8 * 9 * As far as I am concerned, the code I have written for this software 10 * can be used freely for any purpose. Any derived versions of this 11 * software must be clearly marked as such, and if the derived work is 12 * incompatible with the protocol description in the RFC file, it must be 13 * called by a name other than "ssh" or "Secure Shell". 14 * 15 * SSH2 implementation, 16 * Copyright (c) 2000, 2001 Markus Friedl. All rights reserved. 17 * 18 * Redistribution and use in source and binary forms, with or without 19 * modification, are permitted provided that the following conditions 20 * are met: 21 * 1. Redistributions of source code must retain the above copyright 22 * notice, this list of conditions and the following disclaimer. 23 * 2. Redistributions in binary form must reproduce the above copyright 24 * notice, this list of conditions and the following disclaimer in the 25 * documentation and/or other materials provided with the distribution. 26 * 27 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 28 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 29 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 30 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 31 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 32 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 33 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 34 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 35 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 36 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 #include "includes.h" 40 __RCSID("$NetBSD: ssh-add.c,v 1.19 2019/04/20 17:16:40 christos Exp $"); 41 #include <sys/types.h> 42 #include <sys/stat.h> 43 44 #include <openssl/evp.h> 45 46 #include <errno.h> 47 #include <fcntl.h> 48 #include <pwd.h> 49 #include <stdio.h> 50 #include <stdlib.h> 51 #include <string.h> 52 #include <unistd.h> 53 #include <limits.h> 54 55 #include "xmalloc.h" 56 #include "ssh.h" 57 #include "log.h" 58 #include "sshkey.h" 59 #include "sshbuf.h" 60 #include "authfd.h" 61 #include "authfile.h" 62 #include "pathnames.h" 63 #include "misc.h" 64 #include "ssherr.h" 65 #include "digest.h" 66 67 /* argv0 */ 68 extern char *__progname; 69 70 /* Default files to add */ 71 static const char *default_files[] = { 72 _PATH_SSH_CLIENT_ID_RSA, 73 _PATH_SSH_CLIENT_ID_DSA, 74 _PATH_SSH_CLIENT_ID_ECDSA, 75 _PATH_SSH_CLIENT_ID_ED25519, 76 _PATH_SSH_CLIENT_ID_XMSS, 77 NULL 78 }; 79 80 static int fingerprint_hash = SSH_FP_HASH_DEFAULT; 81 82 /* Default lifetime (0 == forever) */ 83 static int lifetime = 0; 84 85 /* User has to confirm key use */ 86 static int confirm = 0; 87 88 /* Maximum number of signatures (XMSS) */ 89 static u_int maxsign = 0; 90 static u_int minleft = 0; 91 92 /* we keep a cache of one passphrase */ 93 static char *pass = NULL; 94 static void 95 clear_pass(void) 96 { 97 if (pass) { 98 explicit_bzero(pass, strlen(pass)); 99 free(pass); 100 pass = NULL; 101 } 102 } 103 104 static int 105 delete_file(int agent_fd, const char *filename, int key_only, int qflag) 106 { 107 struct sshkey *public, *cert = NULL; 108 char *certpath = NULL, *comment = NULL; 109 int r, ret = -1; 110 111 if ((r = sshkey_load_public(filename, &public, &comment)) != 0) { 112 printf("Bad key file %s: %s\n", filename, ssh_err(r)); 113 return -1; 114 } 115 if ((r = ssh_remove_identity(agent_fd, public)) == 0) { 116 if (!qflag) { 117 fprintf(stderr, "Identity removed: %s (%s)\n", 118 filename, comment); 119 } 120 ret = 0; 121 } else 122 fprintf(stderr, "Could not remove identity \"%s\": %s\n", 123 filename, ssh_err(r)); 124 125 if (key_only) 126 goto out; 127 128 /* Now try to delete the corresponding certificate too */ 129 free(comment); 130 comment = NULL; 131 xasprintf(&certpath, "%s-cert.pub", filename); 132 if ((r = sshkey_load_public(certpath, &cert, &comment)) != 0) { 133 if (r != SSH_ERR_SYSTEM_ERROR || errno != ENOENT) 134 error("Failed to load certificate \"%s\": %s", 135 certpath, ssh_err(r)); 136 goto out; 137 } 138 139 if (!sshkey_equal_public(cert, public)) 140 fatal("Certificate %s does not match private key %s", 141 certpath, filename); 142 143 if ((r = ssh_remove_identity(agent_fd, cert)) == 0) { 144 if (!qflag) { 145 fprintf(stderr, "Identity removed: %s (%s)\n", 146 certpath, comment); 147 } 148 ret = 0; 149 } else 150 fprintf(stderr, "Could not remove identity \"%s\": %s\n", 151 certpath, ssh_err(r)); 152 153 out: 154 sshkey_free(cert); 155 sshkey_free(public); 156 free(certpath); 157 free(comment); 158 159 return ret; 160 } 161 162 /* Send a request to remove all identities. */ 163 static int 164 delete_all(int agent_fd, int qflag) 165 { 166 int ret = -1; 167 168 /* 169 * Since the agent might be forwarded, old or non-OpenSSH, when asked 170 * to remove all keys, attempt to remove both protocol v.1 and v.2 171 * keys. 172 */ 173 if (ssh_remove_all_identities(agent_fd, 2) == 0) 174 ret = 0; 175 /* ignore error-code for ssh1 */ 176 ssh_remove_all_identities(agent_fd, 1); 177 178 if (ret != 0) 179 fprintf(stderr, "Failed to remove all identities.\n"); 180 else if (!qflag) 181 fprintf(stderr, "All identities removed.\n"); 182 183 return ret; 184 } 185 186 static int 187 add_file(int agent_fd, const char *filename, int key_only, int qflag) 188 { 189 struct sshkey *private, *cert; 190 char *comment = NULL; 191 char msg[1024], *certpath = NULL; 192 int r, fd, ret = -1; 193 size_t i; 194 u_int32_t left; 195 struct sshbuf *keyblob; 196 struct ssh_identitylist *idlist; 197 198 if (strcmp(filename, "-") == 0) { 199 fd = STDIN_FILENO; 200 filename = "(stdin)"; 201 } else if ((fd = open(filename, O_RDONLY)) < 0) { 202 perror(filename); 203 return -1; 204 } 205 206 /* 207 * Since we'll try to load a keyfile multiple times, permission errors 208 * will occur multiple times, so check perms first and bail if wrong. 209 */ 210 if (fd != STDIN_FILENO) { 211 if (sshkey_perm_ok(fd, filename) != 0) { 212 close(fd); 213 return -1; 214 } 215 } 216 if ((keyblob = sshbuf_new()) == NULL) 217 fatal("%s: sshbuf_new failed", __func__); 218 if ((r = sshkey_load_file(fd, keyblob)) != 0) { 219 fprintf(stderr, "Error loading key \"%s\": %s\n", 220 filename, ssh_err(r)); 221 sshbuf_free(keyblob); 222 close(fd); 223 return -1; 224 } 225 close(fd); 226 227 /* At first, try empty passphrase */ 228 if ((r = sshkey_parse_private_fileblob(keyblob, "", &private, 229 &comment)) != 0 && r != SSH_ERR_KEY_WRONG_PASSPHRASE) { 230 fprintf(stderr, "Error loading key \"%s\": %s\n", 231 filename, ssh_err(r)); 232 goto fail_load; 233 } 234 /* try last */ 235 if (private == NULL && pass != NULL) { 236 if ((r = sshkey_parse_private_fileblob(keyblob, pass, &private, 237 &comment)) != 0 && r != SSH_ERR_KEY_WRONG_PASSPHRASE) { 238 fprintf(stderr, "Error loading key \"%s\": %s\n", 239 filename, ssh_err(r)); 240 goto fail_load; 241 } 242 } 243 if (private == NULL) { 244 /* clear passphrase since it did not work */ 245 clear_pass(); 246 snprintf(msg, sizeof msg, "Enter passphrase for %s%s: ", 247 filename, confirm ? " (will confirm each use)" : ""); 248 for (;;) { 249 pass = read_passphrase(msg, RP_ALLOW_STDIN); 250 if (strcmp(pass, "") == 0) 251 goto fail_load; 252 if ((r = sshkey_parse_private_fileblob(keyblob, pass, 253 &private, &comment)) == 0) 254 break; 255 else if (r != SSH_ERR_KEY_WRONG_PASSPHRASE) { 256 fprintf(stderr, 257 "Error loading key \"%s\": %s\n", 258 filename, ssh_err(r)); 259 fail_load: 260 clear_pass(); 261 sshbuf_free(keyblob); 262 return -1; 263 } 264 clear_pass(); 265 snprintf(msg, sizeof msg, 266 "Bad passphrase, try again for %s%s: ", filename, 267 confirm ? " (will confirm each use)" : ""); 268 } 269 } 270 if (comment == NULL || *comment == '\0') 271 comment = xstrdup(filename); 272 sshbuf_free(keyblob); 273 274 /* For XMSS */ 275 if ((r = sshkey_set_filename(private, filename)) != 0) { 276 fprintf(stderr, "Could not add filename to private key: %s (%s)\n", 277 filename, comment); 278 goto out; 279 } 280 if (maxsign && minleft && 281 (r = ssh_fetch_identitylist(agent_fd, &idlist)) == 0) { 282 for (i = 0; i < idlist->nkeys; i++) { 283 if (!sshkey_equal_public(idlist->keys[i], private)) 284 continue; 285 left = sshkey_signatures_left(idlist->keys[i]); 286 if (left < minleft) { 287 fprintf(stderr, 288 "Only %d signatures left.\n", left); 289 break; 290 } 291 fprintf(stderr, "Skipping update: "); 292 if (left == minleft) { 293 fprintf(stderr, 294 "required signatures left (%d).\n", left); 295 } else { 296 fprintf(stderr, 297 "more signatures left (%d) than" 298 " required (%d).\n", left, minleft); 299 } 300 ssh_free_identitylist(idlist); 301 goto out; 302 } 303 ssh_free_identitylist(idlist); 304 } 305 306 if ((r = ssh_add_identity_constrained(agent_fd, private, comment, 307 lifetime, confirm, maxsign)) == 0) { 308 ret = 0; 309 if (!qflag) { 310 fprintf(stderr, "Identity added: %s (%s)\n", 311 filename, comment); 312 if (lifetime != 0) { 313 fprintf(stderr, 314 "Lifetime set to %d seconds\n", lifetime); 315 } 316 if (confirm != 0) { 317 fprintf(stderr, "The user must confirm " 318 "each use of the key\n"); 319 } 320 } 321 } else { 322 fprintf(stderr, "Could not add identity \"%s\": %s\n", 323 filename, ssh_err(r)); 324 } 325 326 /* Skip trying to load the cert if requested */ 327 if (key_only) 328 goto out; 329 330 /* Now try to add the certificate flavour too */ 331 xasprintf(&certpath, "%s-cert.pub", filename); 332 if ((r = sshkey_load_public(certpath, &cert, NULL)) != 0) { 333 if (r != SSH_ERR_SYSTEM_ERROR || errno != ENOENT) 334 error("Failed to load certificate \"%s\": %s", 335 certpath, ssh_err(r)); 336 goto out; 337 } 338 339 if (!sshkey_equal_public(cert, private)) { 340 error("Certificate %s does not match private key %s", 341 certpath, filename); 342 sshkey_free(cert); 343 goto out; 344 } 345 346 /* Graft with private bits */ 347 if ((r = sshkey_to_certified(private)) != 0) { 348 error("%s: sshkey_to_certified: %s", __func__, ssh_err(r)); 349 sshkey_free(cert); 350 goto out; 351 } 352 if ((r = sshkey_cert_copy(cert, private)) != 0) { 353 error("%s: sshkey_cert_copy: %s", __func__, ssh_err(r)); 354 sshkey_free(cert); 355 goto out; 356 } 357 sshkey_free(cert); 358 359 if ((r = ssh_add_identity_constrained(agent_fd, private, comment, 360 lifetime, confirm, maxsign)) != 0) { 361 error("Certificate %s (%s) add failed: %s", certpath, 362 private->cert->key_id, ssh_err(r)); 363 goto out; 364 } 365 /* success */ 366 if (!qflag) { 367 fprintf(stderr, "Certificate added: %s (%s)\n", certpath, 368 private->cert->key_id); 369 if (lifetime != 0) { 370 fprintf(stderr, "Lifetime set to %d seconds\n", 371 lifetime); 372 } 373 if (confirm != 0) { 374 fprintf(stderr, "The user must confirm each use " 375 "of the key\n"); 376 } 377 } 378 379 out: 380 free(certpath); 381 free(comment); 382 sshkey_free(private); 383 384 return ret; 385 } 386 387 static int 388 update_card(int agent_fd, int add, const char *id, int qflag) 389 { 390 char *pin = NULL; 391 int r, ret = -1; 392 393 if (add) { 394 if ((pin = read_passphrase("Enter passphrase for PKCS#11: ", 395 RP_ALLOW_STDIN)) == NULL) 396 return -1; 397 } 398 399 if ((r = ssh_update_card(agent_fd, add, id, pin == NULL ? "" : pin, 400 lifetime, confirm)) == 0) { 401 ret = 0; 402 if (!qflag) { 403 fprintf(stderr, "Card %s: %s\n", 404 add ? "added" : "removed", id); 405 } 406 } else { 407 fprintf(stderr, "Could not %s card \"%s\": %s\n", 408 add ? "add" : "remove", id, ssh_err(r)); 409 ret = -1; 410 } 411 free(pin); 412 return ret; 413 } 414 415 static int 416 test_key(int agent_fd, const char *filename) 417 { 418 struct sshkey *key = NULL; 419 u_char *sig = NULL; 420 size_t slen = 0; 421 int r, ret = -1; 422 u_char data[1024]; 423 424 if ((r = sshkey_load_public(filename, &key, NULL)) != 0) { 425 error("Couldn't read public key %s: %s", filename, ssh_err(r)); 426 return -1; 427 } 428 arc4random_buf(data, sizeof(data)); 429 if ((r = ssh_agent_sign(agent_fd, key, &sig, &slen, data, sizeof(data), 430 NULL, 0)) != 0) { 431 error("Agent signature failed for %s: %s", 432 filename, ssh_err(r)); 433 goto done; 434 } 435 if ((r = sshkey_verify(key, sig, slen, data, sizeof(data), 436 NULL, 0)) != 0) { 437 error("Signature verification failed for %s: %s", 438 filename, ssh_err(r)); 439 goto done; 440 } 441 /* success */ 442 ret = 0; 443 done: 444 free(sig); 445 sshkey_free(key); 446 return ret; 447 } 448 449 static int 450 list_identities(int agent_fd, int do_fp) 451 { 452 char *fp; 453 int r; 454 struct ssh_identitylist *idlist; 455 u_int32_t left; 456 size_t i; 457 458 if ((r = ssh_fetch_identitylist(agent_fd, &idlist)) != 0) { 459 if (r != SSH_ERR_AGENT_NO_IDENTITIES) 460 fprintf(stderr, "error fetching identities: %s\n", 461 ssh_err(r)); 462 else 463 printf("The agent has no identities.\n"); 464 return -1; 465 } 466 for (i = 0; i < idlist->nkeys; i++) { 467 if (do_fp) { 468 fp = sshkey_fingerprint(idlist->keys[i], 469 fingerprint_hash, SSH_FP_DEFAULT); 470 printf("%u %s %s (%s)\n", sshkey_size(idlist->keys[i]), 471 fp == NULL ? "(null)" : fp, idlist->comments[i], 472 sshkey_type(idlist->keys[i])); 473 free(fp); 474 } else { 475 if ((r = sshkey_write(idlist->keys[i], stdout)) != 0) { 476 fprintf(stderr, "sshkey_write: %s\n", 477 ssh_err(r)); 478 continue; 479 } 480 fprintf(stdout, " %s", idlist->comments[i]); 481 left = sshkey_signatures_left(idlist->keys[i]); 482 if (left > 0) 483 fprintf(stdout, 484 " [signatures left %d]", left); 485 fprintf(stdout, "\n"); 486 } 487 } 488 ssh_free_identitylist(idlist); 489 return 0; 490 } 491 492 static int 493 lock_agent(int agent_fd, int lock) 494 { 495 char prompt[100], *p1, *p2; 496 int r, passok = 1, ret = -1; 497 498 strlcpy(prompt, "Enter lock password: ", sizeof(prompt)); 499 p1 = read_passphrase(prompt, RP_ALLOW_STDIN); 500 if (lock) { 501 strlcpy(prompt, "Again: ", sizeof prompt); 502 p2 = read_passphrase(prompt, RP_ALLOW_STDIN); 503 if (strcmp(p1, p2) != 0) { 504 fprintf(stderr, "Passwords do not match.\n"); 505 passok = 0; 506 } 507 explicit_bzero(p2, strlen(p2)); 508 free(p2); 509 } 510 if (passok) { 511 if ((r = ssh_lock_agent(agent_fd, lock, p1)) == 0) { 512 fprintf(stderr, "Agent %slocked.\n", lock ? "" : "un"); 513 ret = 0; 514 } else { 515 fprintf(stderr, "Failed to %slock agent: %s\n", 516 lock ? "" : "un", ssh_err(r)); 517 } 518 } 519 explicit_bzero(p1, strlen(p1)); 520 free(p1); 521 return (ret); 522 } 523 524 static int 525 do_file(int agent_fd, int deleting, int key_only, char *file, int qflag) 526 { 527 if (deleting) { 528 if (delete_file(agent_fd, file, key_only, qflag) == -1) 529 return -1; 530 } else { 531 if (add_file(agent_fd, file, key_only, qflag) == -1) 532 return -1; 533 } 534 return 0; 535 } 536 537 static void 538 usage(void) 539 { 540 fprintf(stderr, "usage: %s [options] [file ...]\n", __progname); 541 fprintf(stderr, "Options:\n"); 542 fprintf(stderr, " -l List fingerprints of all identities.\n"); 543 fprintf(stderr, " -E hash Specify hash algorithm used for fingerprints.\n"); 544 fprintf(stderr, " -L List public key parameters of all identities.\n"); 545 fprintf(stderr, " -k Load only keys and not certificates.\n"); 546 fprintf(stderr, " -c Require confirmation to sign using identities\n"); 547 fprintf(stderr, " -m minleft Maxsign is only changed if less than minleft are left (for XMSS)\n"); 548 fprintf(stderr, " -M maxsign Maximum number of signatures allowed (for XMSS)\n"); 549 fprintf(stderr, " -t life Set lifetime (in seconds) when adding identities.\n"); 550 fprintf(stderr, " -d Delete identity.\n"); 551 fprintf(stderr, " -D Delete all identities.\n"); 552 fprintf(stderr, " -x Lock agent.\n"); 553 fprintf(stderr, " -X Unlock agent.\n"); 554 fprintf(stderr, " -s pkcs11 Add keys from PKCS#11 provider.\n"); 555 fprintf(stderr, " -e pkcs11 Remove keys provided by PKCS#11 provider.\n"); 556 fprintf(stderr, " -T pubkey Test if ssh-agent can access matching private key.\n"); 557 fprintf(stderr, " -q Be quiet after a successful operation.\n"); 558 fprintf(stderr, " -v Be more verbose.\n"); 559 } 560 561 int 562 main(int argc, char **argv) 563 { 564 extern char *optarg; 565 extern int optind; 566 int agent_fd; 567 char *pkcs11provider = NULL; 568 int r, i, ch, deleting = 0, ret = 0, key_only = 0; 569 int xflag = 0, lflag = 0, Dflag = 0, qflag = 0, Tflag = 0; 570 SyslogFacility log_facility = SYSLOG_FACILITY_AUTH; 571 LogLevel log_level = SYSLOG_LEVEL_INFO; 572 573 ssh_malloc_init(); /* must be called before any mallocs */ 574 /* Ensure that fds 0, 1 and 2 are open or directed to /dev/null */ 575 sanitise_stdfd(); 576 577 OpenSSL_add_all_algorithms(); 578 579 log_init(__progname, log_level, log_facility, 1); 580 581 setvbuf(stdout, NULL, _IOLBF, 0); 582 583 /* First, get a connection to the authentication agent. */ 584 switch (r = ssh_get_authentication_socket(&agent_fd)) { 585 case 0: 586 break; 587 case SSH_ERR_AGENT_NOT_PRESENT: 588 fprintf(stderr, "Could not open a connection to your " 589 "authentication agent.\n"); 590 exit(2); 591 default: 592 fprintf(stderr, "Error connecting to agent: %s\n", ssh_err(r)); 593 exit(2); 594 } 595 596 while ((ch = getopt(argc, argv, "vklLcdDTxXE:e:M:m:qs:t:")) != -1) { 597 switch (ch) { 598 case 'v': 599 if (log_level == SYSLOG_LEVEL_INFO) 600 log_level = SYSLOG_LEVEL_DEBUG1; 601 else if (log_level < SYSLOG_LEVEL_DEBUG3) 602 log_level++; 603 break; 604 case 'E': 605 fingerprint_hash = ssh_digest_alg_by_name(optarg); 606 if (fingerprint_hash == -1) 607 fatal("Invalid hash algorithm \"%s\"", optarg); 608 break; 609 case 'k': 610 key_only = 1; 611 break; 612 case 'l': 613 case 'L': 614 if (lflag != 0) 615 fatal("-%c flag already specified", lflag); 616 lflag = ch; 617 break; 618 case 'x': 619 case 'X': 620 if (xflag != 0) 621 fatal("-%c flag already specified", xflag); 622 xflag = ch; 623 break; 624 case 'c': 625 confirm = 1; 626 break; 627 case 'm': 628 minleft = (int)strtonum(optarg, 1, UINT_MAX, NULL); 629 if (minleft == 0) { 630 usage(); 631 ret = 1; 632 goto done; 633 } 634 break; 635 case 'M': 636 maxsign = (int)strtonum(optarg, 1, UINT_MAX, NULL); 637 if (maxsign == 0) { 638 usage(); 639 ret = 1; 640 goto done; 641 } 642 break; 643 case 'd': 644 deleting = 1; 645 break; 646 case 'D': 647 Dflag = 1; 648 break; 649 case 's': 650 pkcs11provider = optarg; 651 break; 652 case 'e': 653 deleting = 1; 654 pkcs11provider = optarg; 655 break; 656 case 't': 657 if ((lifetime = convtime(optarg)) == -1) { 658 fprintf(stderr, "Invalid lifetime\n"); 659 ret = 1; 660 goto done; 661 } 662 break; 663 case 'q': 664 qflag = 1; 665 break; 666 case 'T': 667 Tflag = 1; 668 break; 669 default: 670 usage(); 671 ret = 1; 672 goto done; 673 } 674 } 675 log_init(__progname, log_level, log_facility, 1); 676 677 if ((xflag != 0) + (lflag != 0) + (Dflag != 0) > 1) 678 fatal("Invalid combination of actions"); 679 else if (xflag) { 680 if (lock_agent(agent_fd, xflag == 'x' ? 1 : 0) == -1) 681 ret = 1; 682 goto done; 683 } else if (lflag) { 684 if (list_identities(agent_fd, lflag == 'l' ? 1 : 0) == -1) 685 ret = 1; 686 goto done; 687 } else if (Dflag) { 688 if (delete_all(agent_fd, qflag) == -1) 689 ret = 1; 690 goto done; 691 } 692 693 argc -= optind; 694 argv += optind; 695 if (Tflag) { 696 if (argc <= 0) 697 fatal("no keys to test"); 698 for (r = i = 0; i < argc; i++) 699 r |= test_key(agent_fd, argv[i]); 700 ret = r == 0 ? 0 : 1; 701 goto done; 702 } 703 if (pkcs11provider != NULL) { 704 if (update_card(agent_fd, !deleting, pkcs11provider, 705 qflag) == -1) 706 ret = 1; 707 goto done; 708 } 709 if (argc == 0) { 710 char buf[PATH_MAX]; 711 struct passwd *pw; 712 struct stat st; 713 int count = 0; 714 715 if ((pw = getpwuid(getuid())) == NULL) { 716 fprintf(stderr, "No user found with uid %u\n", 717 (u_int)getuid()); 718 ret = 1; 719 goto done; 720 } 721 722 for (i = 0; default_files[i]; i++) { 723 snprintf(buf, sizeof(buf), "%s/%s", pw->pw_dir, 724 default_files[i]); 725 if (stat(buf, &st) < 0) 726 continue; 727 if (do_file(agent_fd, deleting, key_only, buf, 728 qflag) == -1) 729 ret = 1; 730 else 731 count++; 732 } 733 if (count == 0) 734 ret = 1; 735 } else { 736 for (i = 0; i < argc; i++) { 737 if (do_file(agent_fd, deleting, key_only, 738 argv[i], qflag) == -1) 739 ret = 1; 740 } 741 } 742 clear_pass(); 743 744 done: 745 ssh_close_authentication_socket(agent_fd); 746 return ret; 747 } 748