| File: | src/usr.bin/ssh/ssh-add/../ssh-add.c |
| Warning: | line 321, column 7 Although the value stored to 'r' is used in the enclosing expression, the value is never actually read from 'r' |
Press '?' to see keyboard shortcuts
Keyboard shortcuts:
| 1 | /* $OpenBSD: ssh-add.c,v 1.163 2021/12/22 06:56:41 jmc Exp $ */ |
| 2 | /* |
| 3 | * Author: Tatu Ylonen <ylo@cs.hut.fi> |
| 4 | * Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland |
| 5 | * All rights reserved |
| 6 | * Adds an identity to the authentication server, or removes an identity. |
| 7 | * |
| 8 | * As far as I am concerned, the code I have written for this software |
| 9 | * can be used freely for any purpose. Any derived versions of this |
| 10 | * software must be clearly marked as such, and if the derived work is |
| 11 | * incompatible with the protocol description in the RFC file, it must be |
| 12 | * called by a name other than "ssh" or "Secure Shell". |
| 13 | * |
| 14 | * SSH2 implementation, |
| 15 | * Copyright (c) 2000, 2001 Markus Friedl. All rights reserved. |
| 16 | * |
| 17 | * Redistribution and use in source and binary forms, with or without |
| 18 | * modification, are permitted provided that the following conditions |
| 19 | * are met: |
| 20 | * 1. Redistributions of source code must retain the above copyright |
| 21 | * notice, this list of conditions and the following disclaimer. |
| 22 | * 2. Redistributions in binary form must reproduce the above copyright |
| 23 | * notice, this list of conditions and the following disclaimer in the |
| 24 | * documentation and/or other materials provided with the distribution. |
| 25 | * |
| 26 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
| 27 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| 28 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
| 29 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
| 30 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| 31 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| 32 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| 33 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 34 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
| 35 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 36 | */ |
| 37 | |
| 38 | #include <sys/types.h> |
| 39 | #include <sys/stat.h> |
| 40 | |
| 41 | #ifdef WITH_OPENSSL1 |
| 42 | #include <openssl/evp.h> |
| 43 | #endif |
| 44 | |
| 45 | #include <errno(*__errno()).h> |
| 46 | #include <fcntl.h> |
| 47 | #include <pwd.h> |
| 48 | #include <stdio.h> |
| 49 | #include <stdlib.h> |
| 50 | #include <string.h> |
| 51 | #include <stdarg.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 | #include "ssh-sk.h" |
| 67 | #include "sk-api.h" |
| 68 | #include "hostfile.h" |
| 69 | |
| 70 | /* argv0 */ |
| 71 | extern char *__progname; |
| 72 | |
| 73 | /* Default files to add */ |
| 74 | static char *default_files[] = { |
| 75 | _PATH_SSH_CLIENT_ID_RSA".ssh" "/id_rsa", |
| 76 | _PATH_SSH_CLIENT_ID_DSA".ssh" "/id_dsa", |
| 77 | _PATH_SSH_CLIENT_ID_ECDSA".ssh" "/id_ecdsa", |
| 78 | _PATH_SSH_CLIENT_ID_ECDSA_SK".ssh" "/id_ecdsa_sk", |
| 79 | _PATH_SSH_CLIENT_ID_ED25519".ssh" "/id_ed25519", |
| 80 | _PATH_SSH_CLIENT_ID_ED25519_SK".ssh" "/id_ed25519_sk", |
| 81 | _PATH_SSH_CLIENT_ID_XMSS".ssh" "/id_xmss", |
| 82 | NULL((void*)0) |
| 83 | }; |
| 84 | |
| 85 | static int fingerprint_hash = SSH_FP_HASH_DEFAULT2; |
| 86 | |
| 87 | /* Default lifetime (0 == forever) */ |
| 88 | static int lifetime = 0; |
| 89 | |
| 90 | /* User has to confirm key use */ |
| 91 | static int confirm = 0; |
| 92 | |
| 93 | /* Maximum number of signatures (XMSS) */ |
| 94 | static u_int maxsign = 0; |
| 95 | static u_int minleft = 0; |
| 96 | |
| 97 | /* we keep a cache of one passphrase */ |
| 98 | static char *pass = NULL((void*)0); |
| 99 | static void |
| 100 | clear_pass(void) |
| 101 | { |
| 102 | if (pass) { |
| 103 | freezero(pass, strlen(pass)); |
| 104 | pass = NULL((void*)0); |
| 105 | } |
| 106 | } |
| 107 | |
| 108 | static int |
| 109 | delete_one(int agent_fd, const struct sshkey *key, const char *comment, |
| 110 | const char *path, int qflag) |
| 111 | { |
| 112 | int r; |
| 113 | |
| 114 | if ((r = ssh_remove_identity(agent_fd, key)) != 0) { |
| 115 | fprintf(stderr(&__sF[2]), "Could not remove identity \"%s\": %s\n", |
| 116 | path, ssh_err(r)); |
| 117 | return r; |
| 118 | } |
| 119 | if (!qflag) { |
| 120 | fprintf(stderr(&__sF[2]), "Identity removed: %s %s (%s)\n", path, |
| 121 | sshkey_type(key), comment); |
| 122 | } |
| 123 | return 0; |
| 124 | } |
| 125 | |
| 126 | static int |
| 127 | delete_stdin(int agent_fd, int qflag) |
| 128 | { |
| 129 | char *line = NULL((void*)0), *cp; |
| 130 | size_t linesize = 0; |
| 131 | struct sshkey *key = NULL((void*)0); |
| 132 | int lnum = 0, r, ret = -1; |
| 133 | |
| 134 | while (getline(&line, &linesize, stdin(&__sF[0])) != -1) { |
| 135 | lnum++; |
| 136 | sshkey_free(key); |
| 137 | key = NULL((void*)0); |
| 138 | line[strcspn(line, "\n")] = '\0'; |
| 139 | cp = line + strspn(line, " \t"); |
| 140 | if (*cp == '#' || *cp == '\0') |
| 141 | continue; |
| 142 | if ((key = sshkey_new(KEY_UNSPEC)) == NULL((void*)0)) |
| 143 | fatal_f("sshkey_new")sshfatal("/usr/src/usr.bin/ssh/ssh-add/../ssh-add.c", __func__ , 143, 1, SYSLOG_LEVEL_FATAL, ((void*)0), "sshkey_new"); |
| 144 | if ((r = sshkey_read(key, &cp)) != 0) { |
| 145 | error_r(r, "(stdin):%d: invalid key", lnum)sshlog("/usr/src/usr.bin/ssh/ssh-add/../ssh-add.c", __func__, 145, 0, SYSLOG_LEVEL_ERROR, ssh_err(r), "(stdin):%d: invalid key" , lnum); |
| 146 | continue; |
| 147 | } |
| 148 | if (delete_one(agent_fd, key, cp, "(stdin)", qflag) == 0) |
| 149 | ret = 0; |
| 150 | } |
| 151 | sshkey_free(key); |
| 152 | free(line); |
| 153 | return ret; |
| 154 | } |
| 155 | |
| 156 | static int |
| 157 | delete_file(int agent_fd, const char *filename, int key_only, int qflag) |
| 158 | { |
| 159 | struct sshkey *public, *cert = NULL((void*)0); |
| 160 | char *certpath = NULL((void*)0), *comment = NULL((void*)0); |
| 161 | int r, ret = -1; |
| 162 | |
| 163 | if (strcmp(filename, "-") == 0) |
| 164 | return delete_stdin(agent_fd, qflag); |
| 165 | |
| 166 | if ((r = sshkey_load_public(filename, &public, &comment)) != 0) { |
| 167 | printf("Bad key file %s: %s\n", filename, ssh_err(r)); |
| 168 | return -1; |
| 169 | } |
| 170 | if (delete_one(agent_fd, public, comment, filename, qflag) == 0) |
| 171 | ret = 0; |
| 172 | |
| 173 | if (key_only) |
| 174 | goto out; |
| 175 | |
| 176 | /* Now try to delete the corresponding certificate too */ |
| 177 | free(comment); |
| 178 | comment = NULL((void*)0); |
| 179 | xasprintf(&certpath, "%s-cert.pub", filename); |
| 180 | if ((r = sshkey_load_public(certpath, &cert, &comment)) != 0) { |
| 181 | if (r != SSH_ERR_SYSTEM_ERROR-24 || errno(*__errno()) != ENOENT2) |
| 182 | error_r(r, "Failed to load certificate \"%s\"", certpath)sshlog("/usr/src/usr.bin/ssh/ssh-add/../ssh-add.c", __func__, 182, 0, SYSLOG_LEVEL_ERROR, ssh_err(r), "Failed to load certificate \"%s\"" , certpath); |
| 183 | goto out; |
| 184 | } |
| 185 | |
| 186 | if (!sshkey_equal_public(cert, public)) |
| 187 | fatal("Certificate %s does not match private key %s",sshfatal("/usr/src/usr.bin/ssh/ssh-add/../ssh-add.c", __func__ , 188, 0, SYSLOG_LEVEL_FATAL, ((void*)0), "Certificate %s does not match private key %s" , certpath, filename) |
| 188 | certpath, filename)sshfatal("/usr/src/usr.bin/ssh/ssh-add/../ssh-add.c", __func__ , 188, 0, SYSLOG_LEVEL_FATAL, ((void*)0), "Certificate %s does not match private key %s" , certpath, filename); |
| 189 | |
| 190 | if (delete_one(agent_fd, cert, comment, certpath, qflag) == 0) |
| 191 | ret = 0; |
| 192 | |
| 193 | out: |
| 194 | sshkey_free(cert); |
| 195 | sshkey_free(public); |
| 196 | free(certpath); |
| 197 | free(comment); |
| 198 | |
| 199 | return ret; |
| 200 | } |
| 201 | |
| 202 | /* Send a request to remove all identities. */ |
| 203 | static int |
| 204 | delete_all(int agent_fd, int qflag) |
| 205 | { |
| 206 | int ret = -1; |
| 207 | |
| 208 | /* |
| 209 | * Since the agent might be forwarded, old or non-OpenSSH, when asked |
| 210 | * to remove all keys, attempt to remove both protocol v.1 and v.2 |
| 211 | * keys. |
| 212 | */ |
| 213 | if (ssh_remove_all_identities(agent_fd, 2) == 0) |
| 214 | ret = 0; |
| 215 | /* ignore error-code for ssh1 */ |
| 216 | ssh_remove_all_identities(agent_fd, 1); |
| 217 | |
| 218 | if (ret != 0) |
| 219 | fprintf(stderr(&__sF[2]), "Failed to remove all identities.\n"); |
| 220 | else if (!qflag) |
| 221 | fprintf(stderr(&__sF[2]), "All identities removed.\n"); |
| 222 | |
| 223 | return ret; |
| 224 | } |
| 225 | |
| 226 | static int |
| 227 | add_file(int agent_fd, const char *filename, int key_only, int qflag, |
| 228 | const char *skprovider, struct dest_constraint **dest_constraints, |
| 229 | size_t ndest_constraints) |
| 230 | { |
| 231 | struct sshkey *private, *cert; |
| 232 | char *comment = NULL((void*)0); |
| 233 | char msg[1024], *certpath = NULL((void*)0); |
| 234 | int r, fd, ret = -1; |
| 235 | size_t i; |
| 236 | u_int32_t left; |
| 237 | struct sshbuf *keyblob; |
| 238 | struct ssh_identitylist *idlist; |
| 239 | |
| 240 | if (strcmp(filename, "-") == 0) { |
| 241 | fd = STDIN_FILENO0; |
| 242 | filename = "(stdin)"; |
| 243 | } else if ((fd = open(filename, O_RDONLY0x0000)) == -1) { |
| 244 | perror(filename); |
| 245 | return -1; |
| 246 | } |
| 247 | |
| 248 | /* |
| 249 | * Since we'll try to load a keyfile multiple times, permission errors |
| 250 | * will occur multiple times, so check perms first and bail if wrong. |
| 251 | */ |
| 252 | if (fd != STDIN_FILENO0) { |
| 253 | if (sshkey_perm_ok(fd, filename) != 0) { |
| 254 | close(fd); |
| 255 | return -1; |
| 256 | } |
| 257 | } |
| 258 | if ((r = sshbuf_load_fd(fd, &keyblob)) != 0) { |
| 259 | fprintf(stderr(&__sF[2]), "Error loading key \"%s\": %s\n", |
| 260 | filename, ssh_err(r)); |
| 261 | sshbuf_free(keyblob); |
| 262 | close(fd); |
| 263 | return -1; |
| 264 | } |
| 265 | close(fd); |
| 266 | |
| 267 | /* At first, try empty passphrase */ |
| 268 | if ((r = sshkey_parse_private_fileblob(keyblob, "", &private, |
| 269 | &comment)) != 0 && r != SSH_ERR_KEY_WRONG_PASSPHRASE-43) { |
| 270 | fprintf(stderr(&__sF[2]), "Error loading key \"%s\": %s\n", |
| 271 | filename, ssh_err(r)); |
| 272 | goto fail_load; |
| 273 | } |
| 274 | /* try last */ |
| 275 | if (private == NULL((void*)0) && pass != NULL((void*)0)) { |
| 276 | if ((r = sshkey_parse_private_fileblob(keyblob, pass, &private, |
| 277 | &comment)) != 0 && r != SSH_ERR_KEY_WRONG_PASSPHRASE-43) { |
| 278 | fprintf(stderr(&__sF[2]), "Error loading key \"%s\": %s\n", |
| 279 | filename, ssh_err(r)); |
| 280 | goto fail_load; |
| 281 | } |
| 282 | } |
| 283 | if (private == NULL((void*)0)) { |
| 284 | /* clear passphrase since it did not work */ |
| 285 | clear_pass(); |
| 286 | snprintf(msg, sizeof msg, "Enter passphrase for %s%s: ", |
| 287 | filename, confirm ? " (will confirm each use)" : ""); |
| 288 | for (;;) { |
| 289 | pass = read_passphrase(msg, RP_ALLOW_STDIN0x0002); |
| 290 | if (strcmp(pass, "") == 0) |
| 291 | goto fail_load; |
| 292 | if ((r = sshkey_parse_private_fileblob(keyblob, pass, |
| 293 | &private, &comment)) == 0) |
| 294 | break; |
| 295 | else if (r != SSH_ERR_KEY_WRONG_PASSPHRASE-43) { |
| 296 | fprintf(stderr(&__sF[2]), |
| 297 | "Error loading key \"%s\": %s\n", |
| 298 | filename, ssh_err(r)); |
| 299 | fail_load: |
| 300 | clear_pass(); |
| 301 | sshbuf_free(keyblob); |
| 302 | return -1; |
| 303 | } |
| 304 | clear_pass(); |
| 305 | snprintf(msg, sizeof msg, |
| 306 | "Bad passphrase, try again for %s%s: ", filename, |
| 307 | confirm ? " (will confirm each use)" : ""); |
| 308 | } |
| 309 | } |
| 310 | if (comment == NULL((void*)0) || *comment == '\0') |
| 311 | comment = xstrdup(filename); |
| 312 | sshbuf_free(keyblob); |
| 313 | |
| 314 | /* For XMSS */ |
| 315 | if ((r = sshkey_set_filename(private, filename)) != 0) { |
| 316 | fprintf(stderr(&__sF[2]), "Could not add filename to private key: %s (%s)\n", |
| 317 | filename, comment); |
| 318 | goto out; |
| 319 | } |
| 320 | if (maxsign && minleft && |
| 321 | (r = ssh_fetch_identitylist(agent_fd, &idlist)) == 0) { |
Although the value stored to 'r' is used in the enclosing expression, the value is never actually read from 'r' | |
| 322 | for (i = 0; i < idlist->nkeys; i++) { |
| 323 | if (!sshkey_equal_public(idlist->keys[i], private)) |
| 324 | continue; |
| 325 | left = sshkey_signatures_left(idlist->keys[i]); |
| 326 | if (left < minleft) { |
| 327 | fprintf(stderr(&__sF[2]), |
| 328 | "Only %d signatures left.\n", left); |
| 329 | break; |
| 330 | } |
| 331 | fprintf(stderr(&__sF[2]), "Skipping update: "); |
| 332 | if (left == minleft) { |
| 333 | fprintf(stderr(&__sF[2]), |
| 334 | "required signatures left (%d).\n", left); |
| 335 | } else { |
| 336 | fprintf(stderr(&__sF[2]), |
| 337 | "more signatures left (%d) than" |
| 338 | " required (%d).\n", left, minleft); |
| 339 | } |
| 340 | ssh_free_identitylist(idlist); |
| 341 | goto out; |
| 342 | } |
| 343 | ssh_free_identitylist(idlist); |
| 344 | } |
| 345 | |
| 346 | if (sshkey_is_sk(private)) { |
| 347 | if (skprovider == NULL((void*)0)) { |
| 348 | fprintf(stderr(&__sF[2]), "Cannot load FIDO key %s " |
| 349 | "without provider\n", filename); |
| 350 | goto out; |
| 351 | } |
| 352 | if ((private->sk_flags & SSH_SK_USER_VERIFICATION_REQD0x04) != 0) { |
| 353 | fprintf(stderr(&__sF[2]), "FIDO verify-required key %s is not " |
| 354 | "currently supported by ssh-agent\n", filename); |
| 355 | goto out; |
| 356 | } |
| 357 | } else { |
| 358 | /* Don't send provider constraint for other keys */ |
| 359 | skprovider = NULL((void*)0); |
| 360 | } |
| 361 | |
| 362 | if ((r = ssh_add_identity_constrained(agent_fd, private, comment, |
| 363 | lifetime, confirm, maxsign, skprovider, |
| 364 | dest_constraints, ndest_constraints)) == 0) { |
| 365 | ret = 0; |
| 366 | if (!qflag) { |
| 367 | fprintf(stderr(&__sF[2]), "Identity added: %s (%s)\n", |
| 368 | filename, comment); |
| 369 | if (lifetime != 0) { |
| 370 | fprintf(stderr(&__sF[2]), |
| 371 | "Lifetime set to %d seconds\n", lifetime); |
| 372 | } |
| 373 | if (confirm != 0) { |
| 374 | fprintf(stderr(&__sF[2]), "The user must confirm " |
| 375 | "each use of the key\n"); |
| 376 | } |
| 377 | } |
| 378 | } else { |
| 379 | fprintf(stderr(&__sF[2]), "Could not add identity \"%s\": %s\n", |
| 380 | filename, ssh_err(r)); |
| 381 | } |
| 382 | |
| 383 | /* Skip trying to load the cert if requested */ |
| 384 | if (key_only) |
| 385 | goto out; |
| 386 | |
| 387 | /* Now try to add the certificate flavour too */ |
| 388 | xasprintf(&certpath, "%s-cert.pub", filename); |
| 389 | if ((r = sshkey_load_public(certpath, &cert, NULL((void*)0))) != 0) { |
| 390 | if (r != SSH_ERR_SYSTEM_ERROR-24 || errno(*__errno()) != ENOENT2) |
| 391 | error_r(r, "Failed to load certificate \"%s\"", certpath)sshlog("/usr/src/usr.bin/ssh/ssh-add/../ssh-add.c", __func__, 391, 0, SYSLOG_LEVEL_ERROR, ssh_err(r), "Failed to load certificate \"%s\"" , certpath); |
| 392 | goto out; |
| 393 | } |
| 394 | |
| 395 | if (!sshkey_equal_public(cert, private)) { |
| 396 | error("Certificate %s does not match private key %s",sshlog("/usr/src/usr.bin/ssh/ssh-add/../ssh-add.c", __func__, 397, 0, SYSLOG_LEVEL_ERROR, ((void*)0), "Certificate %s does not match private key %s" , certpath, filename) |
| 397 | certpath, filename)sshlog("/usr/src/usr.bin/ssh/ssh-add/../ssh-add.c", __func__, 397, 0, SYSLOG_LEVEL_ERROR, ((void*)0), "Certificate %s does not match private key %s" , certpath, filename); |
| 398 | sshkey_free(cert); |
| 399 | goto out; |
| 400 | } |
| 401 | |
| 402 | /* Graft with private bits */ |
| 403 | if ((r = sshkey_to_certified(private)) != 0) { |
| 404 | error_fr(r, "sshkey_to_certified")sshlog("/usr/src/usr.bin/ssh/ssh-add/../ssh-add.c", __func__, 404, 1, SYSLOG_LEVEL_ERROR, ssh_err(r), "sshkey_to_certified" ); |
| 405 | sshkey_free(cert); |
| 406 | goto out; |
| 407 | } |
| 408 | if ((r = sshkey_cert_copy(cert, private)) != 0) { |
| 409 | error_fr(r, "sshkey_cert_copy")sshlog("/usr/src/usr.bin/ssh/ssh-add/../ssh-add.c", __func__, 409, 1, SYSLOG_LEVEL_ERROR, ssh_err(r), "sshkey_cert_copy"); |
| 410 | sshkey_free(cert); |
| 411 | goto out; |
| 412 | } |
| 413 | sshkey_free(cert); |
| 414 | |
| 415 | if ((r = ssh_add_identity_constrained(agent_fd, private, comment, |
| 416 | lifetime, confirm, maxsign, skprovider, |
| 417 | dest_constraints, ndest_constraints)) != 0) { |
| 418 | error_r(r, "Certificate %s (%s) add failed", certpath,sshlog("/usr/src/usr.bin/ssh/ssh-add/../ssh-add.c", __func__, 419, 0, SYSLOG_LEVEL_ERROR, ssh_err(r), "Certificate %s (%s) add failed" , certpath, private->cert->key_id) |
| 419 | private->cert->key_id)sshlog("/usr/src/usr.bin/ssh/ssh-add/../ssh-add.c", __func__, 419, 0, SYSLOG_LEVEL_ERROR, ssh_err(r), "Certificate %s (%s) add failed" , certpath, private->cert->key_id); |
| 420 | goto out; |
| 421 | } |
| 422 | /* success */ |
| 423 | if (!qflag) { |
| 424 | fprintf(stderr(&__sF[2]), "Certificate added: %s (%s)\n", certpath, |
| 425 | private->cert->key_id); |
| 426 | if (lifetime != 0) { |
| 427 | fprintf(stderr(&__sF[2]), "Lifetime set to %d seconds\n", |
| 428 | lifetime); |
| 429 | } |
| 430 | if (confirm != 0) { |
| 431 | fprintf(stderr(&__sF[2]), "The user must confirm each use " |
| 432 | "of the key\n"); |
| 433 | } |
| 434 | } |
| 435 | |
| 436 | out: |
| 437 | free(certpath); |
| 438 | free(comment); |
| 439 | sshkey_free(private); |
| 440 | |
| 441 | return ret; |
| 442 | } |
| 443 | |
| 444 | static int |
| 445 | update_card(int agent_fd, int add, const char *id, int qflag, |
| 446 | struct dest_constraint **dest_constraints, size_t ndest_constraints) |
| 447 | { |
| 448 | char *pin = NULL((void*)0); |
| 449 | int r, ret = -1; |
| 450 | |
| 451 | if (add) { |
| 452 | if ((pin = read_passphrase("Enter passphrase for PKCS#11: ", |
| 453 | RP_ALLOW_STDIN0x0002)) == NULL((void*)0)) |
| 454 | return -1; |
| 455 | } |
| 456 | |
| 457 | if ((r = ssh_update_card(agent_fd, add, id, pin == NULL((void*)0) ? "" : pin, |
| 458 | lifetime, confirm, dest_constraints, ndest_constraints)) == 0) { |
| 459 | ret = 0; |
| 460 | if (!qflag) { |
| 461 | fprintf(stderr(&__sF[2]), "Card %s: %s\n", |
| 462 | add ? "added" : "removed", id); |
| 463 | } |
| 464 | } else { |
| 465 | fprintf(stderr(&__sF[2]), "Could not %s card \"%s\": %s\n", |
| 466 | add ? "add" : "remove", id, ssh_err(r)); |
| 467 | ret = -1; |
| 468 | } |
| 469 | free(pin); |
| 470 | return ret; |
| 471 | } |
| 472 | |
| 473 | static int |
| 474 | test_key(int agent_fd, const char *filename) |
| 475 | { |
| 476 | struct sshkey *key = NULL((void*)0); |
| 477 | u_char *sig = NULL((void*)0); |
| 478 | size_t slen = 0; |
| 479 | int r, ret = -1; |
| 480 | char data[1024]; |
| 481 | |
| 482 | if ((r = sshkey_load_public(filename, &key, NULL((void*)0))) != 0) { |
| 483 | error_r(r, "Couldn't read public key %s", filename)sshlog("/usr/src/usr.bin/ssh/ssh-add/../ssh-add.c", __func__, 483, 0, SYSLOG_LEVEL_ERROR, ssh_err(r), "Couldn't read public key %s" , filename); |
| 484 | return -1; |
| 485 | } |
| 486 | arc4random_buf(data, sizeof(data)); |
| 487 | if ((r = ssh_agent_sign(agent_fd, key, &sig, &slen, data, sizeof(data), |
| 488 | NULL((void*)0), 0)) != 0) { |
| 489 | error_r(r, "Agent signature failed for %s", filename)sshlog("/usr/src/usr.bin/ssh/ssh-add/../ssh-add.c", __func__, 489, 0, SYSLOG_LEVEL_ERROR, ssh_err(r), "Agent signature failed for %s" , filename); |
| 490 | goto done; |
| 491 | } |
| 492 | if ((r = sshkey_verify(key, sig, slen, data, sizeof(data), |
| 493 | NULL((void*)0), 0, NULL((void*)0))) != 0) { |
| 494 | error_r(r, "Signature verification failed for %s", filename)sshlog("/usr/src/usr.bin/ssh/ssh-add/../ssh-add.c", __func__, 494, 0, SYSLOG_LEVEL_ERROR, ssh_err(r), "Signature verification failed for %s" , filename); |
| 495 | goto done; |
| 496 | } |
| 497 | /* success */ |
| 498 | ret = 0; |
| 499 | done: |
| 500 | free(sig); |
| 501 | sshkey_free(key); |
| 502 | return ret; |
| 503 | } |
| 504 | |
| 505 | static int |
| 506 | list_identities(int agent_fd, int do_fp) |
| 507 | { |
| 508 | char *fp; |
| 509 | int r; |
| 510 | struct ssh_identitylist *idlist; |
| 511 | u_int32_t left; |
| 512 | size_t i; |
| 513 | |
| 514 | if ((r = ssh_fetch_identitylist(agent_fd, &idlist)) != 0) { |
| 515 | if (r != SSH_ERR_AGENT_NO_IDENTITIES-48) |
| 516 | fprintf(stderr(&__sF[2]), "error fetching identities: %s\n", |
| 517 | ssh_err(r)); |
| 518 | else |
| 519 | printf("The agent has no identities.\n"); |
| 520 | return -1; |
| 521 | } |
| 522 | for (i = 0; i < idlist->nkeys; i++) { |
| 523 | if (do_fp) { |
| 524 | fp = sshkey_fingerprint(idlist->keys[i], |
| 525 | fingerprint_hash, SSH_FP_DEFAULT); |
| 526 | printf("%u %s %s (%s)\n", sshkey_size(idlist->keys[i]), |
| 527 | fp == NULL((void*)0) ? "(null)" : fp, idlist->comments[i], |
| 528 | sshkey_type(idlist->keys[i])); |
| 529 | free(fp); |
| 530 | } else { |
| 531 | if ((r = sshkey_write(idlist->keys[i], stdout(&__sF[1]))) != 0) { |
| 532 | fprintf(stderr(&__sF[2]), "sshkey_write: %s\n", |
| 533 | ssh_err(r)); |
| 534 | continue; |
| 535 | } |
| 536 | fprintf(stdout(&__sF[1]), " %s", idlist->comments[i]); |
| 537 | left = sshkey_signatures_left(idlist->keys[i]); |
| 538 | if (left > 0) |
| 539 | fprintf(stdout(&__sF[1]), |
| 540 | " [signatures left %d]", left); |
| 541 | fprintf(stdout(&__sF[1]), "\n"); |
| 542 | } |
| 543 | } |
| 544 | ssh_free_identitylist(idlist); |
| 545 | return 0; |
| 546 | } |
| 547 | |
| 548 | static int |
| 549 | lock_agent(int agent_fd, int lock) |
| 550 | { |
| 551 | char prompt[100], *p1, *p2; |
| 552 | int r, passok = 1, ret = -1; |
| 553 | |
| 554 | strlcpy(prompt, "Enter lock password: ", sizeof(prompt)); |
| 555 | p1 = read_passphrase(prompt, RP_ALLOW_STDIN0x0002); |
| 556 | if (lock) { |
| 557 | strlcpy(prompt, "Again: ", sizeof prompt); |
| 558 | p2 = read_passphrase(prompt, RP_ALLOW_STDIN0x0002); |
| 559 | if (strcmp(p1, p2) != 0) { |
| 560 | fprintf(stderr(&__sF[2]), "Passwords do not match.\n"); |
| 561 | passok = 0; |
| 562 | } |
| 563 | freezero(p2, strlen(p2)); |
| 564 | } |
| 565 | if (passok) { |
| 566 | if ((r = ssh_lock_agent(agent_fd, lock, p1)) == 0) { |
| 567 | fprintf(stderr(&__sF[2]), "Agent %slocked.\n", lock ? "" : "un"); |
| 568 | ret = 0; |
| 569 | } else { |
| 570 | fprintf(stderr(&__sF[2]), "Failed to %slock agent: %s\n", |
| 571 | lock ? "" : "un", ssh_err(r)); |
| 572 | } |
| 573 | } |
| 574 | freezero(p1, strlen(p1)); |
| 575 | return (ret); |
| 576 | } |
| 577 | |
| 578 | static int |
| 579 | load_resident_keys(int agent_fd, const char *skprovider, int qflag, |
| 580 | struct dest_constraint **dest_constraints, size_t ndest_constraints) |
| 581 | { |
| 582 | struct sshsk_resident_key **srks; |
| 583 | size_t nsrks, i; |
| 584 | struct sshkey *key; |
| 585 | int r, ok = 0; |
| 586 | char *fp; |
| 587 | |
| 588 | pass = read_passphrase("Enter PIN for authenticator: ", RP_ALLOW_STDIN0x0002); |
| 589 | if ((r = sshsk_load_resident(skprovider, NULL((void*)0), pass, 0, |
| 590 | &srks, &nsrks)) != 0) { |
| 591 | error_r(r, "Unable to load resident keys")sshlog("/usr/src/usr.bin/ssh/ssh-add/../ssh-add.c", __func__, 591, 0, SYSLOG_LEVEL_ERROR, ssh_err(r), "Unable to load resident keys" ); |
| 592 | return r; |
| 593 | } |
| 594 | for (i = 0; i < nsrks; i++) { |
| 595 | key = srks[i]->key; |
| 596 | if ((fp = sshkey_fingerprint(key, |
| 597 | fingerprint_hash, SSH_FP_DEFAULT)) == NULL((void*)0)) |
| 598 | fatal_f("sshkey_fingerprint failed")sshfatal("/usr/src/usr.bin/ssh/ssh-add/../ssh-add.c", __func__ , 598, 1, SYSLOG_LEVEL_FATAL, ((void*)0), "sshkey_fingerprint failed" ); |
| 599 | if ((r = ssh_add_identity_constrained(agent_fd, key, "", |
| 600 | lifetime, confirm, maxsign, skprovider, |
| 601 | dest_constraints, ndest_constraints)) != 0) { |
| 602 | error("Unable to add key %s %s",sshlog("/usr/src/usr.bin/ssh/ssh-add/../ssh-add.c", __func__, 603, 0, SYSLOG_LEVEL_ERROR, ((void*)0), "Unable to add key %s %s" , sshkey_type(key), fp) |
| 603 | sshkey_type(key), fp)sshlog("/usr/src/usr.bin/ssh/ssh-add/../ssh-add.c", __func__, 603, 0, SYSLOG_LEVEL_ERROR, ((void*)0), "Unable to add key %s %s" , sshkey_type(key), fp); |
| 604 | free(fp); |
| 605 | ok = r; |
| 606 | continue; |
| 607 | } |
| 608 | if (ok == 0) |
| 609 | ok = 1; |
| 610 | if (!qflag) { |
| 611 | fprintf(stderr(&__sF[2]), "Resident identity added: %s %s\n", |
| 612 | sshkey_type(key), fp); |
| 613 | if (lifetime != 0) { |
| 614 | fprintf(stderr(&__sF[2]), |
| 615 | "Lifetime set to %d seconds\n", lifetime); |
| 616 | } |
| 617 | if (confirm != 0) { |
| 618 | fprintf(stderr(&__sF[2]), "The user must confirm " |
| 619 | "each use of the key\n"); |
| 620 | } |
| 621 | } |
| 622 | free(fp); |
| 623 | } |
| 624 | sshsk_free_resident_keys(srks, nsrks); |
| 625 | if (nsrks == 0) |
| 626 | return SSH_ERR_KEY_NOT_FOUND-46; |
| 627 | return ok == 1 ? 0 : ok; |
| 628 | } |
| 629 | |
| 630 | static int |
| 631 | do_file(int agent_fd, int deleting, int key_only, char *file, int qflag, |
| 632 | const char *skprovider, struct dest_constraint **dest_constraints, |
| 633 | size_t ndest_constraints) |
| 634 | { |
| 635 | if (deleting) { |
| 636 | if (delete_file(agent_fd, file, key_only, qflag) == -1) |
| 637 | return -1; |
| 638 | } else { |
| 639 | if (add_file(agent_fd, file, key_only, qflag, skprovider, |
| 640 | dest_constraints, ndest_constraints) == -1) |
| 641 | return -1; |
| 642 | } |
| 643 | return 0; |
| 644 | } |
| 645 | |
| 646 | /* Append string 's' to a NULL-terminated array of strings */ |
| 647 | static void |
| 648 | stringlist_append(char ***listp, const char *s) |
| 649 | { |
| 650 | size_t i = 0; |
| 651 | |
| 652 | if (*listp == NULL((void*)0)) |
| 653 | *listp = xcalloc(2, sizeof(**listp)); |
| 654 | else { |
| 655 | for (i = 0; (*listp)[i] != NULL((void*)0); i++) |
| 656 | ; /* count */ |
| 657 | *listp = xrecallocarray(*listp, i + 1, i + 2, sizeof(**listp)); |
| 658 | } |
| 659 | (*listp)[i] = xstrdup(s); |
| 660 | } |
| 661 | |
| 662 | static void |
| 663 | parse_dest_constraint_hop(const char *s, struct dest_constraint_hop *dch, |
| 664 | char **hostkey_files) |
| 665 | { |
| 666 | char *user = NULL((void*)0), *host, *os, *path; |
| 667 | size_t i; |
| 668 | struct hostkeys *hostkeys; |
| 669 | const struct hostkey_entry *hke; |
| 670 | int r, want_ca; |
| 671 | |
| 672 | memset(dch, '\0', sizeof(*dch)); |
| 673 | os = xstrdup(s); |
| 674 | if ((host = strchr(os, '@')) == NULL((void*)0)) |
| 675 | host = os; |
| 676 | else { |
| 677 | *host++ = '\0'; |
| 678 | user = os; |
| 679 | } |
| 680 | cleanhostname(host); |
| 681 | /* Trivial case: username@ (all hosts) */ |
| 682 | if (*host == '\0') { |
| 683 | if (user == NULL((void*)0)) { |
| 684 | fatal("Invalid key destination constraint \"%s\": "sshfatal("/usr/src/usr.bin/ssh/ssh-add/../ssh-add.c", __func__ , 685, 0, SYSLOG_LEVEL_FATAL, ((void*)0), "Invalid key destination constraint \"%s\": " "does not specify user or host", s) |
| 685 | "does not specify user or host", s)sshfatal("/usr/src/usr.bin/ssh/ssh-add/../ssh-add.c", __func__ , 685, 0, SYSLOG_LEVEL_FATAL, ((void*)0), "Invalid key destination constraint \"%s\": " "does not specify user or host", s); |
| 686 | } |
| 687 | dch->user = xstrdup(user); |
| 688 | /* other fields left blank */ |
| 689 | free(os); |
| 690 | return; |
| 691 | } |
| 692 | if (hostkey_files == NULL((void*)0)) |
| 693 | fatal_f("no hostkey files")sshfatal("/usr/src/usr.bin/ssh/ssh-add/../ssh-add.c", __func__ , 693, 1, SYSLOG_LEVEL_FATAL, ((void*)0), "no hostkey files"); |
| 694 | /* Otherwise we need to look up the keys for this hostname */ |
| 695 | hostkeys = init_hostkeys(); |
| 696 | for (i = 0; hostkey_files[i]; i++) { |
| 697 | path = tilde_expand_filename(hostkey_files[i], getuid()); |
| 698 | debug2_f("looking up host keys for \"%s\" in %s", host, path)sshlog("/usr/src/usr.bin/ssh/ssh-add/../ssh-add.c", __func__, 698, 1, SYSLOG_LEVEL_DEBUG2, ((void*)0), "looking up host keys for \"%s\" in %s" , host, path); |
| 699 | load_hostkeys(hostkeys, host, path, 0); |
| 700 | free(path); |
| 701 | } |
| 702 | dch->user = user == NULL((void*)0) ? NULL((void*)0) : xstrdup(user); |
| 703 | dch->hostname = xstrdup(host); |
| 704 | for (i = 0; i < hostkeys->num_entries; i++) { |
| 705 | hke = hostkeys->entries + i; |
| 706 | want_ca = hke->marker == MRK_CA; |
| 707 | if (hke->marker != MRK_NONE && !want_ca) |
| 708 | continue; |
| 709 | debug3_f("%s%s%s: adding %s %skey from %s:%lu as key %u",sshlog("/usr/src/usr.bin/ssh/ssh-add/../ssh-add.c", __func__, 712, 1, SYSLOG_LEVEL_DEBUG3, ((void*)0), "%s%s%s: adding %s %skey from %s:%lu as key %u" , user == ((void*)0) ? "": user, user == ((void*)0) ? "" : "@" , host, sshkey_type(hke->key), want_ca ? "CA " : "", hke-> file, hke->line, dch->nkeys) |
| 710 | user == NULL ? "": user, user == NULL ? "" : "@",sshlog("/usr/src/usr.bin/ssh/ssh-add/../ssh-add.c", __func__, 712, 1, SYSLOG_LEVEL_DEBUG3, ((void*)0), "%s%s%s: adding %s %skey from %s:%lu as key %u" , user == ((void*)0) ? "": user, user == ((void*)0) ? "" : "@" , host, sshkey_type(hke->key), want_ca ? "CA " : "", hke-> file, hke->line, dch->nkeys) |
| 711 | host, sshkey_type(hke->key), want_ca ? "CA " : "",sshlog("/usr/src/usr.bin/ssh/ssh-add/../ssh-add.c", __func__, 712, 1, SYSLOG_LEVEL_DEBUG3, ((void*)0), "%s%s%s: adding %s %skey from %s:%lu as key %u" , user == ((void*)0) ? "": user, user == ((void*)0) ? "" : "@" , host, sshkey_type(hke->key), want_ca ? "CA " : "", hke-> file, hke->line, dch->nkeys) |
| 712 | hke->file, hke->line, dch->nkeys)sshlog("/usr/src/usr.bin/ssh/ssh-add/../ssh-add.c", __func__, 712, 1, SYSLOG_LEVEL_DEBUG3, ((void*)0), "%s%s%s: adding %s %skey from %s:%lu as key %u" , user == ((void*)0) ? "": user, user == ((void*)0) ? "" : "@" , host, sshkey_type(hke->key), want_ca ? "CA " : "", hke-> file, hke->line, dch->nkeys); |
| 713 | dch->keys = xrecallocarray(dch->keys, dch->nkeys, |
| 714 | dch->nkeys + 1, sizeof(*dch->keys)); |
| 715 | dch->key_is_ca = xrecallocarray(dch->key_is_ca, dch->nkeys, |
| 716 | dch->nkeys + 1, sizeof(*dch->key_is_ca)); |
| 717 | if ((r = sshkey_from_private(hke->key, |
| 718 | &(dch->keys[dch->nkeys]))) != 0) |
| 719 | fatal_fr(r, "sshkey_from_private")sshfatal("/usr/src/usr.bin/ssh/ssh-add/../ssh-add.c", __func__ , 719, 1, SYSLOG_LEVEL_FATAL, ssh_err(r), "sshkey_from_private" ); |
| 720 | dch->key_is_ca[dch->nkeys] = want_ca; |
| 721 | dch->nkeys++; |
| 722 | } |
| 723 | if (dch->nkeys == 0) |
| 724 | fatal("No host keys found for destination \"%s\"", host)sshfatal("/usr/src/usr.bin/ssh/ssh-add/../ssh-add.c", __func__ , 724, 0, SYSLOG_LEVEL_FATAL, ((void*)0), "No host keys found for destination \"%s\"" , host); |
| 725 | free_hostkeys(hostkeys); |
| 726 | free(os); |
| 727 | return; |
| 728 | } |
| 729 | |
| 730 | static void |
| 731 | parse_dest_constraint(const char *s, struct dest_constraint ***dcp, |
| 732 | size_t *ndcp, char **hostkey_files) |
| 733 | { |
| 734 | struct dest_constraint *dc; |
| 735 | char *os, *cp; |
| 736 | |
| 737 | dc = xcalloc(1, sizeof(*dc)); |
| 738 | os = xstrdup(s); |
| 739 | if ((cp = strchr(os, '>')) == NULL((void*)0)) { |
| 740 | /* initial hop; no 'from' hop specified */ |
| 741 | parse_dest_constraint_hop(os, &dc->to, hostkey_files); |
| 742 | } else { |
| 743 | /* two hops specified */ |
| 744 | *(cp++) = '\0'; |
| 745 | parse_dest_constraint_hop(os, &dc->from, hostkey_files); |
| 746 | parse_dest_constraint_hop(cp, &dc->to, hostkey_files); |
| 747 | if (dc->from.user != NULL((void*)0)) { |
| 748 | fatal("Invalid key constraint %s: cannot specify "sshfatal("/usr/src/usr.bin/ssh/ssh-add/../ssh-add.c", __func__ , 749, 0, SYSLOG_LEVEL_FATAL, ((void*)0), "Invalid key constraint %s: cannot specify " "user on 'from' host", os) |
| 749 | "user on 'from' host", os)sshfatal("/usr/src/usr.bin/ssh/ssh-add/../ssh-add.c", __func__ , 749, 0, SYSLOG_LEVEL_FATAL, ((void*)0), "Invalid key constraint %s: cannot specify " "user on 'from' host", os); |
| 750 | } |
| 751 | } |
| 752 | /* XXX eliminate or error on duplicates */ |
| 753 | debug2_f("constraint %zu: %s%s%s (%u keys) > %s%s%s (%u keys)", *ndcp,sshlog("/usr/src/usr.bin/ssh/ssh-add/../ssh-add.c", __func__, 757, 1, SYSLOG_LEVEL_DEBUG2, ((void*)0), "constraint %zu: %s%s%s (%u keys) > %s%s%s (%u keys)" , *ndcp, dc->from.user ? dc->from.user : "", dc->from .user ? "@" : "", dc->from.hostname ? dc->from.hostname : "(ORIGIN)", dc->from.nkeys, dc->to.user ? dc->to. user : "", dc->to.user ? "@" : "", dc->to.hostname ? dc ->to.hostname : "(ANY)", dc->to.nkeys) |
| 754 | dc->from.user ? dc->from.user : "", dc->from.user ? "@" : "",sshlog("/usr/src/usr.bin/ssh/ssh-add/../ssh-add.c", __func__, 757, 1, SYSLOG_LEVEL_DEBUG2, ((void*)0), "constraint %zu: %s%s%s (%u keys) > %s%s%s (%u keys)" , *ndcp, dc->from.user ? dc->from.user : "", dc->from .user ? "@" : "", dc->from.hostname ? dc->from.hostname : "(ORIGIN)", dc->from.nkeys, dc->to.user ? dc->to. user : "", dc->to.user ? "@" : "", dc->to.hostname ? dc ->to.hostname : "(ANY)", dc->to.nkeys) |
| 755 | dc->from.hostname ? dc->from.hostname : "(ORIGIN)", dc->from.nkeys,sshlog("/usr/src/usr.bin/ssh/ssh-add/../ssh-add.c", __func__, 757, 1, SYSLOG_LEVEL_DEBUG2, ((void*)0), "constraint %zu: %s%s%s (%u keys) > %s%s%s (%u keys)" , *ndcp, dc->from.user ? dc->from.user : "", dc->from .user ? "@" : "", dc->from.hostname ? dc->from.hostname : "(ORIGIN)", dc->from.nkeys, dc->to.user ? dc->to. user : "", dc->to.user ? "@" : "", dc->to.hostname ? dc ->to.hostname : "(ANY)", dc->to.nkeys) |
| 756 | dc->to.user ? dc->to.user : "", dc->to.user ? "@" : "",sshlog("/usr/src/usr.bin/ssh/ssh-add/../ssh-add.c", __func__, 757, 1, SYSLOG_LEVEL_DEBUG2, ((void*)0), "constraint %zu: %s%s%s (%u keys) > %s%s%s (%u keys)" , *ndcp, dc->from.user ? dc->from.user : "", dc->from .user ? "@" : "", dc->from.hostname ? dc->from.hostname : "(ORIGIN)", dc->from.nkeys, dc->to.user ? dc->to. user : "", dc->to.user ? "@" : "", dc->to.hostname ? dc ->to.hostname : "(ANY)", dc->to.nkeys) |
| 757 | dc->to.hostname ? dc->to.hostname : "(ANY)", dc->to.nkeys)sshlog("/usr/src/usr.bin/ssh/ssh-add/../ssh-add.c", __func__, 757, 1, SYSLOG_LEVEL_DEBUG2, ((void*)0), "constraint %zu: %s%s%s (%u keys) > %s%s%s (%u keys)" , *ndcp, dc->from.user ? dc->from.user : "", dc->from .user ? "@" : "", dc->from.hostname ? dc->from.hostname : "(ORIGIN)", dc->from.nkeys, dc->to.user ? dc->to. user : "", dc->to.user ? "@" : "", dc->to.hostname ? dc ->to.hostname : "(ANY)", dc->to.nkeys); |
| 758 | *dcp = xrecallocarray(*dcp, *ndcp, *ndcp + 1, sizeof(**dcp)); |
| 759 | (*dcp)[(*ndcp)++] = dc; |
| 760 | free(os); |
| 761 | } |
| 762 | |
| 763 | |
| 764 | static void |
| 765 | usage(void) |
| 766 | { |
| 767 | fprintf(stderr(&__sF[2]), |
| 768 | "usage: ssh-add [-cDdKkLlqvXx] [-E fingerprint_hash] [-H hostkey_file]\n" |
| 769 | " [-h destination_constraint] [-S provider] [-t life]\n" |
| 770 | #ifdef WITH_XMSS |
| 771 | " [-M maxsign] [-m minleft]\n" |
| 772 | #endif |
| 773 | " [file ...]\n" |
| 774 | " ssh-add -s pkcs11\n" |
| 775 | " ssh-add -e pkcs11\n" |
| 776 | " ssh-add -T pubkey ...\n" |
| 777 | ); |
| 778 | } |
| 779 | |
| 780 | int |
| 781 | main(int argc, char **argv) |
| 782 | { |
| 783 | extern char *optarg; |
| 784 | extern int optind; |
| 785 | int agent_fd; |
| 786 | char *pkcs11provider = NULL((void*)0), *skprovider = NULL((void*)0); |
| 787 | char **dest_constraint_strings = NULL((void*)0), **hostkey_files = NULL((void*)0); |
| 788 | int r, i, ch, deleting = 0, ret = 0, key_only = 0, do_download = 0; |
| 789 | int xflag = 0, lflag = 0, Dflag = 0, qflag = 0, Tflag = 0; |
| 790 | SyslogFacility log_facility = SYSLOG_FACILITY_AUTH; |
| 791 | LogLevel log_level = SYSLOG_LEVEL_INFO; |
| 792 | struct dest_constraint **dest_constraints = NULL((void*)0); |
| 793 | size_t ndest_constraints = 0; |
| 794 | |
| 795 | /* Ensure that fds 0, 1 and 2 are open or directed to /dev/null */ |
| 796 | sanitise_stdfd(); |
| 797 | |
| 798 | #ifdef WITH_OPENSSL1 |
| 799 | OpenSSL_add_all_algorithms()OPENSSL_add_all_algorithms_noconf(); |
| 800 | #endif |
| 801 | log_init(__progname, log_level, log_facility, 1); |
| 802 | |
| 803 | setvbuf(stdout(&__sF[1]), NULL((void*)0), _IOLBF1, 0); |
| 804 | |
| 805 | /* First, get a connection to the authentication agent. */ |
| 806 | switch (r = ssh_get_authentication_socket(&agent_fd)) { |
| 807 | case 0: |
| 808 | break; |
| 809 | case SSH_ERR_AGENT_NOT_PRESENT-47: |
| 810 | fprintf(stderr(&__sF[2]), "Could not open a connection to your " |
| 811 | "authentication agent.\n"); |
| 812 | exit(2); |
| 813 | default: |
| 814 | fprintf(stderr(&__sF[2]), "Error connecting to agent: %s\n", ssh_err(r)); |
| 815 | exit(2); |
| 816 | } |
| 817 | |
| 818 | skprovider = getenv("SSH_SK_PROVIDER"); |
| 819 | |
| 820 | while ((ch = getopt(argc, argv, "vkKlLcdDTxXE:e:h:H:M:m:qs:S:t:")) != -1) { |
| 821 | switch (ch) { |
| 822 | case 'v': |
| 823 | if (log_level == SYSLOG_LEVEL_INFO) |
| 824 | log_level = SYSLOG_LEVEL_DEBUG1; |
| 825 | else if (log_level < SYSLOG_LEVEL_DEBUG3) |
| 826 | log_level++; |
| 827 | break; |
| 828 | case 'E': |
| 829 | fingerprint_hash = ssh_digest_alg_by_name(optarg); |
| 830 | if (fingerprint_hash == -1) |
| 831 | fatal("Invalid hash algorithm \"%s\"", optarg)sshfatal("/usr/src/usr.bin/ssh/ssh-add/../ssh-add.c", __func__ , 831, 0, SYSLOG_LEVEL_FATAL, ((void*)0), "Invalid hash algorithm \"%s\"" , optarg); |
| 832 | break; |
| 833 | case 'H': |
| 834 | stringlist_append(&hostkey_files, optarg); |
| 835 | break; |
| 836 | case 'h': |
| 837 | stringlist_append(&dest_constraint_strings, optarg); |
| 838 | break; |
| 839 | case 'k': |
| 840 | key_only = 1; |
| 841 | break; |
| 842 | case 'K': |
| 843 | do_download = 1; |
| 844 | break; |
| 845 | case 'l': |
| 846 | case 'L': |
| 847 | if (lflag != 0) |
| 848 | fatal("-%c flag already specified", lflag)sshfatal("/usr/src/usr.bin/ssh/ssh-add/../ssh-add.c", __func__ , 848, 0, SYSLOG_LEVEL_FATAL, ((void*)0), "-%c flag already specified" , lflag); |
| 849 | lflag = ch; |
| 850 | break; |
| 851 | case 'x': |
| 852 | case 'X': |
| 853 | if (xflag != 0) |
| 854 | fatal("-%c flag already specified", xflag)sshfatal("/usr/src/usr.bin/ssh/ssh-add/../ssh-add.c", __func__ , 854, 0, SYSLOG_LEVEL_FATAL, ((void*)0), "-%c flag already specified" , xflag); |
| 855 | xflag = ch; |
| 856 | break; |
| 857 | case 'c': |
| 858 | confirm = 1; |
| 859 | break; |
| 860 | case 'm': |
| 861 | minleft = (int)strtonum(optarg, 1, UINT_MAX(2147483647 *2U +1U), NULL((void*)0)); |
| 862 | if (minleft == 0) { |
| 863 | usage(); |
| 864 | ret = 1; |
| 865 | goto done; |
| 866 | } |
| 867 | break; |
| 868 | case 'M': |
| 869 | maxsign = (int)strtonum(optarg, 1, UINT_MAX(2147483647 *2U +1U), NULL((void*)0)); |
| 870 | if (maxsign == 0) { |
| 871 | usage(); |
| 872 | ret = 1; |
| 873 | goto done; |
| 874 | } |
| 875 | break; |
| 876 | case 'd': |
| 877 | deleting = 1; |
| 878 | break; |
| 879 | case 'D': |
| 880 | Dflag = 1; |
| 881 | break; |
| 882 | case 's': |
| 883 | pkcs11provider = optarg; |
| 884 | break; |
| 885 | case 'S': |
| 886 | skprovider = optarg; |
| 887 | break; |
| 888 | case 'e': |
| 889 | deleting = 1; |
| 890 | pkcs11provider = optarg; |
| 891 | break; |
| 892 | case 't': |
| 893 | if ((lifetime = convtime(optarg)) == -1 || |
| 894 | lifetime < 0 || (u_long)lifetime > UINT32_MAX0xffffffffU) { |
| 895 | fprintf(stderr(&__sF[2]), "Invalid lifetime\n"); |
| 896 | ret = 1; |
| 897 | goto done; |
| 898 | } |
| 899 | break; |
| 900 | case 'q': |
| 901 | qflag = 1; |
| 902 | break; |
| 903 | case 'T': |
| 904 | Tflag = 1; |
| 905 | break; |
| 906 | default: |
| 907 | usage(); |
| 908 | ret = 1; |
| 909 | goto done; |
| 910 | } |
| 911 | } |
| 912 | log_init(__progname, log_level, log_facility, 1); |
| 913 | |
| 914 | if ((xflag != 0) + (lflag != 0) + (Dflag != 0) > 1) |
| 915 | fatal("Invalid combination of actions")sshfatal("/usr/src/usr.bin/ssh/ssh-add/../ssh-add.c", __func__ , 915, 0, SYSLOG_LEVEL_FATAL, ((void*)0), "Invalid combination of actions" ); |
| 916 | else if (xflag) { |
| 917 | if (lock_agent(agent_fd, xflag == 'x' ? 1 : 0) == -1) |
| 918 | ret = 1; |
| 919 | goto done; |
| 920 | } else if (lflag) { |
| 921 | if (list_identities(agent_fd, lflag == 'l' ? 1 : 0) == -1) |
| 922 | ret = 1; |
| 923 | goto done; |
| 924 | } else if (Dflag) { |
| 925 | if (delete_all(agent_fd, qflag) == -1) |
| 926 | ret = 1; |
| 927 | goto done; |
| 928 | } |
| 929 | |
| 930 | if (skprovider == NULL((void*)0)) |
| 931 | skprovider = "internal"; |
| 932 | if (hostkey_files == NULL((void*)0)) { |
| 933 | /* use defaults from readconf.c */ |
| 934 | stringlist_append(&hostkey_files, _PATH_SSH_USER_HOSTFILE"~/" ".ssh" "/known_hosts"); |
| 935 | stringlist_append(&hostkey_files, _PATH_SSH_USER_HOSTFILE2"~/" ".ssh" "/known_hosts2"); |
| 936 | stringlist_append(&hostkey_files, _PATH_SSH_SYSTEM_HOSTFILE"/etc" "/ssh" "/ssh_known_hosts"); |
| 937 | stringlist_append(&hostkey_files, _PATH_SSH_SYSTEM_HOSTFILE2"/etc" "/ssh" "/ssh_known_hosts2"); |
| 938 | } |
| 939 | if (dest_constraint_strings != NULL((void*)0)) { |
| 940 | for (i = 0; dest_constraint_strings[i] != NULL((void*)0); i++) { |
| 941 | parse_dest_constraint(dest_constraint_strings[i], |
| 942 | &dest_constraints, &ndest_constraints, hostkey_files); |
| 943 | } |
| 944 | } |
| 945 | |
| 946 | argc -= optind; |
| 947 | argv += optind; |
| 948 | if (Tflag) { |
| 949 | if (argc <= 0) |
| 950 | fatal("no keys to test")sshfatal("/usr/src/usr.bin/ssh/ssh-add/../ssh-add.c", __func__ , 950, 0, SYSLOG_LEVEL_FATAL, ((void*)0), "no keys to test"); |
| 951 | for (r = i = 0; i < argc; i++) |
| 952 | r |= test_key(agent_fd, argv[i]); |
| 953 | ret = r == 0 ? 0 : 1; |
| 954 | goto done; |
| 955 | } |
| 956 | if (pkcs11provider != NULL((void*)0)) { |
| 957 | if (update_card(agent_fd, !deleting, pkcs11provider, |
| 958 | qflag, dest_constraints, ndest_constraints) == -1) |
| 959 | ret = 1; |
| 960 | goto done; |
| 961 | } |
| 962 | if (do_download) { |
| 963 | if (skprovider == NULL((void*)0)) |
| 964 | fatal("Cannot download keys without provider")sshfatal("/usr/src/usr.bin/ssh/ssh-add/../ssh-add.c", __func__ , 964, 0, SYSLOG_LEVEL_FATAL, ((void*)0), "Cannot download keys without provider" ); |
| 965 | if (load_resident_keys(agent_fd, skprovider, qflag, |
| 966 | dest_constraints, ndest_constraints) != 0) |
| 967 | ret = 1; |
| 968 | goto done; |
| 969 | } |
| 970 | if (argc == 0) { |
| 971 | char buf[PATH_MAX1024]; |
| 972 | struct passwd *pw; |
| 973 | struct stat st; |
| 974 | int count = 0; |
| 975 | |
| 976 | if ((pw = getpwuid(getuid())) == NULL((void*)0)) { |
| 977 | fprintf(stderr(&__sF[2]), "No user found with uid %u\n", |
| 978 | (u_int)getuid()); |
| 979 | ret = 1; |
| 980 | goto done; |
| 981 | } |
| 982 | |
| 983 | for (i = 0; default_files[i]; i++) { |
| 984 | snprintf(buf, sizeof(buf), "%s/%s", pw->pw_dir, |
| 985 | default_files[i]); |
| 986 | if (stat(buf, &st) == -1) |
| 987 | continue; |
| 988 | if (do_file(agent_fd, deleting, key_only, buf, |
| 989 | qflag, skprovider, |
| 990 | dest_constraints, ndest_constraints) == -1) |
| 991 | ret = 1; |
| 992 | else |
| 993 | count++; |
| 994 | } |
| 995 | if (count == 0) |
| 996 | ret = 1; |
| 997 | } else { |
| 998 | for (i = 0; i < argc; i++) { |
| 999 | if (do_file(agent_fd, deleting, key_only, |
| 1000 | argv[i], qflag, skprovider, |
| 1001 | dest_constraints, ndest_constraints) == -1) |
| 1002 | ret = 1; |
| 1003 | } |
| 1004 | } |
| 1005 | done: |
| 1006 | clear_pass(); |
| 1007 | ssh_close_authentication_socket(agent_fd); |
| 1008 | return ret; |
| 1009 | } |