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8efc0c15 | 1 | /* |
5260325f | 2 | * Author: Tatu Ylonen <ylo@cs.hut.fi> |
3 | * Copyright (c) 1994 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland | |
4 | * All rights reserved | |
5260325f | 5 | * Identity and host key generation and maintenance. |
bcbf86ec | 6 | * |
7 | * As far as I am concerned, the code I have written for this software | |
8 | * can be used freely for any purpose. Any derived versions of this | |
9 | * software must be clearly marked as such, and if the derived work is | |
10 | * incompatible with the protocol description in the RFC file, it must be | |
11 | * called by a name other than "ssh" or "Secure Shell". | |
5260325f | 12 | */ |
8efc0c15 | 13 | |
14 | #include "includes.h" | |
fd6168c1 | 15 | RCSID("$OpenBSD: ssh-keygen.c,v 1.129 2005/09/13 23:40:07 djm Exp $"); |
8efc0c15 | 16 | |
a306f2dd | 17 | #include <openssl/evp.h> |
18 | #include <openssl/pem.h> | |
a306f2dd | 19 | |
8efc0c15 | 20 | #include "xmalloc.h" |
a306f2dd | 21 | #include "key.h" |
457fc0c6 | 22 | #include "rsa.h" |
a306f2dd | 23 | #include "authfile.h" |
24 | #include "uuencode.h" | |
94ec8c6b | 25 | #include "buffer.h" |
26 | #include "bufaux.h" | |
42f11eb2 | 27 | #include "pathnames.h" |
28 | #include "log.h" | |
58ae9cb8 | 29 | #include "misc.h" |
bdffbcdc | 30 | #include "match.h" |
31 | #include "hostfile.h" | |
94ec8c6b | 32 | |
93a56445 | 33 | #ifdef SMARTCARD |
93a56445 | 34 | #include "scard.h" |
dd2495cb | 35 | #endif |
02159d9b | 36 | #include "dns.h" |
2b30154a | 37 | |
a306f2dd | 38 | /* Number of bits in the RSA/DSA key. This value can be changed on the command line. */ |
60dacb4b | 39 | u_int32_t bits = 2048; |
8efc0c15 | 40 | |
aa3378df | 41 | /* |
42 | * Flag indicating that we just want to change the passphrase. This can be | |
43 | * set on the command line. | |
44 | */ | |
8efc0c15 | 45 | int change_passphrase = 0; |
46 | ||
aa3378df | 47 | /* |
48 | * Flag indicating that we just want to change the comment. This can be set | |
49 | * on the command line. | |
50 | */ | |
8efc0c15 | 51 | int change_comment = 0; |
52 | ||
53 | int quiet = 0; | |
54 | ||
bdffbcdc | 55 | /* Flag indicating that we want to hash a known_hosts file */ |
56 | int hash_hosts = 0; | |
57 | /* Flag indicating that we want lookup a host in known_hosts file */ | |
58 | int find_host = 0; | |
59 | /* Flag indicating that we want to delete a host from a known_hosts file */ | |
60 | int delete_host = 0; | |
61 | ||
f095fcc7 | 62 | /* Flag indicating that we just want to see the key fingerprint */ |
63 | int print_fingerprint = 0; | |
aaf45d87 | 64 | int print_bubblebabble = 0; |
f095fcc7 | 65 | |
5ad13cd7 | 66 | /* The identity file name, given on the command line or entered by the user. */ |
67 | char identity_file[1024]; | |
68 | int have_identity = 0; | |
8efc0c15 | 69 | |
70 | /* This is set to the passphrase if given on the command line. */ | |
71 | char *identity_passphrase = NULL; | |
72 | ||
73 | /* This is set to the new passphrase if given on the command line. */ | |
74 | char *identity_new_passphrase = NULL; | |
75 | ||
76 | /* This is set to the new comment if given on the command line. */ | |
77 | char *identity_comment = NULL; | |
78 | ||
a306f2dd | 79 | /* Dump public key file in format used by real and the original SSH 2 */ |
80 | int convert_to_ssh2 = 0; | |
81 | int convert_from_ssh2 = 0; | |
82 | int print_public = 0; | |
21289cd0 | 83 | int print_generic = 0; |
fa08c86b | 84 | |
3dc93cd8 | 85 | char *key_type_name = NULL; |
a306f2dd | 86 | |
5ad13cd7 | 87 | /* argv0 */ |
88 | extern char *__progname; | |
8efc0c15 | 89 | |
a306f2dd | 90 | char hostname[MAXHOSTNAMELEN]; |
91 | ||
20eea1d7 | 92 | /* moduli.c */ |
c784ae09 | 93 | int gen_candidates(FILE *, u_int32_t, u_int32_t, BIGNUM *); |
20eea1d7 | 94 | int prime_test(FILE *, FILE *, u_int32_t, u_int32_t); |
95 | ||
396c147e | 96 | static void |
5ad13cd7 | 97 | ask_filename(struct passwd *pw, const char *prompt) |
8efc0c15 | 98 | { |
5260325f | 99 | char buf[1024]; |
c523303b | 100 | char *name = NULL; |
101 | ||
8d22d775 | 102 | if (key_type_name == NULL) |
42f11eb2 | 103 | name = _PATH_SSH_CLIENT_ID_RSA; |
8d22d775 | 104 | else |
105 | switch (key_type_from_name(key_type_name)) { | |
106 | case KEY_RSA1: | |
107 | name = _PATH_SSH_CLIENT_IDENTITY; | |
108 | break; | |
109 | case KEY_DSA: | |
110 | name = _PATH_SSH_CLIENT_ID_DSA; | |
111 | break; | |
112 | case KEY_RSA: | |
113 | name = _PATH_SSH_CLIENT_ID_RSA; | |
114 | break; | |
115 | default: | |
116 | fprintf(stderr, "bad key type"); | |
117 | exit(1); | |
118 | break; | |
119 | } | |
120 | ||
c523303b | 121 | snprintf(identity_file, sizeof(identity_file), "%s/%s", pw->pw_dir, name); |
8d88011e | 122 | fprintf(stderr, "%s (%s): ", prompt, identity_file); |
5260325f | 123 | if (fgets(buf, sizeof(buf), stdin) == NULL) |
124 | exit(1); | |
125 | if (strchr(buf, '\n')) | |
126 | *strchr(buf, '\n') = 0; | |
127 | if (strcmp(buf, "") != 0) | |
128 | strlcpy(identity_file, buf, sizeof(identity_file)); | |
129 | have_identity = 1; | |
f095fcc7 | 130 | } |
8efc0c15 | 131 | |
396c147e | 132 | static Key * |
abe0fb9f | 133 | load_identity(char *filename) |
a306f2dd | 134 | { |
aeaa3d9e | 135 | char *pass; |
136 | Key *prv; | |
137 | ||
cd332296 | 138 | prv = key_load_private(filename, "", NULL); |
aeaa3d9e | 139 | if (prv == NULL) { |
abe0fb9f | 140 | if (identity_passphrase) |
141 | pass = xstrdup(identity_passphrase); | |
142 | else | |
1843a425 | 143 | pass = read_passphrase("Enter passphrase: ", |
144 | RP_ALLOW_STDIN); | |
aeaa3d9e | 145 | prv = key_load_private(filename, pass, NULL); |
a306f2dd | 146 | memset(pass, 0, strlen(pass)); |
147 | xfree(pass); | |
148 | } | |
aeaa3d9e | 149 | return prv; |
a306f2dd | 150 | } |
151 | ||
94ec8c6b | 152 | #define SSH_COM_PUBLIC_BEGIN "---- BEGIN SSH2 PUBLIC KEY ----" |
7203d6bb | 153 | #define SSH_COM_PUBLIC_END "---- END SSH2 PUBLIC KEY ----" |
94ec8c6b | 154 | #define SSH_COM_PRIVATE_BEGIN "---- BEGIN SSH2 ENCRYPTED PRIVATE KEY ----" |
2b87da3b | 155 | #define SSH_COM_PRIVATE_KEY_MAGIC 0x3f6ff9eb |
a306f2dd | 156 | |
396c147e | 157 | static void |
a306f2dd | 158 | do_convert_to_ssh2(struct passwd *pw) |
159 | { | |
b587c165 | 160 | Key *k; |
21b30f38 | 161 | u_int len; |
1e3b8b07 | 162 | u_char *blob; |
a306f2dd | 163 | struct stat st; |
164 | ||
165 | if (!have_identity) | |
166 | ask_filename(pw, "Enter file in which the key is"); | |
167 | if (stat(identity_file, &st) < 0) { | |
168 | perror(identity_file); | |
169 | exit(1); | |
170 | } | |
b587c165 | 171 | if ((k = key_load_public(identity_file, NULL)) == NULL) { |
abe0fb9f | 172 | if ((k = load_identity(identity_file)) == NULL) { |
b587c165 | 173 | fprintf(stderr, "load failed\n"); |
174 | exit(1); | |
175 | } | |
a306f2dd | 176 | } |
3566c73c | 177 | if (k->type == KEY_RSA1) { |
178 | fprintf(stderr, "version 1 keys are not supported\n"); | |
179 | exit(1); | |
180 | } | |
f7436b8c | 181 | if (key_to_blob(k, &blob, &len) <= 0) { |
182 | fprintf(stderr, "key_to_blob failed\n"); | |
183 | exit(1); | |
184 | } | |
94ec8c6b | 185 | fprintf(stdout, "%s\n", SSH_COM_PUBLIC_BEGIN); |
a306f2dd | 186 | fprintf(stdout, |
512df038 | 187 | "Comment: \"%u-bit %s, converted from OpenSSH by %s@%s\"\n", |
b587c165 | 188 | key_size(k), key_type(k), |
a306f2dd | 189 | pw->pw_name, hostname); |
190 | dump_base64(stdout, blob, len); | |
94ec8c6b | 191 | fprintf(stdout, "%s\n", SSH_COM_PUBLIC_END); |
b587c165 | 192 | key_free(k); |
a306f2dd | 193 | xfree(blob); |
194 | exit(0); | |
195 | } | |
196 | ||
396c147e | 197 | static void |
94ec8c6b | 198 | buffer_get_bignum_bits(Buffer *b, BIGNUM *value) |
199 | { | |
ca75d7de | 200 | u_int bignum_bits = buffer_get_int(b); |
201 | u_int bytes = (bignum_bits + 7) / 8; | |
457fc0c6 | 202 | |
94ec8c6b | 203 | if (buffer_len(b) < bytes) |
457fc0c6 | 204 | fatal("buffer_get_bignum_bits: input buffer too small: " |
205 | "need %d have %d", bytes, buffer_len(b)); | |
20905a8e | 206 | BN_bin2bn(buffer_ptr(b), bytes, value); |
94ec8c6b | 207 | buffer_consume(b, bytes); |
208 | } | |
209 | ||
396c147e | 210 | static Key * |
c66f9d0e | 211 | do_convert_private_ssh2_from_blob(u_char *blob, u_int blen) |
94ec8c6b | 212 | { |
213 | Buffer b; | |
94ec8c6b | 214 | Key *key = NULL; |
a599bd06 | 215 | char *type, *cipher; |
d3260e12 | 216 | u_char *sig, data[] = "abcde12345"; |
2e0becb6 | 217 | int magic, rlen, ktype, i1, i2, i3, i4; |
a599bd06 | 218 | u_int slen; |
2e0becb6 | 219 | u_long e; |
94ec8c6b | 220 | |
221 | buffer_init(&b); | |
222 | buffer_append(&b, blob, blen); | |
223 | ||
224 | magic = buffer_get_int(&b); | |
225 | if (magic != SSH_COM_PRIVATE_KEY_MAGIC) { | |
226 | error("bad magic 0x%x != 0x%x", magic, SSH_COM_PRIVATE_KEY_MAGIC); | |
227 | buffer_free(&b); | |
228 | return NULL; | |
229 | } | |
2e0becb6 | 230 | i1 = buffer_get_int(&b); |
94ec8c6b | 231 | type = buffer_get_string(&b, NULL); |
232 | cipher = buffer_get_string(&b, NULL); | |
2e0becb6 | 233 | i2 = buffer_get_int(&b); |
234 | i3 = buffer_get_int(&b); | |
235 | i4 = buffer_get_int(&b); | |
236 | debug("ignore (%d %d %d %d)", i1,i2,i3,i4); | |
94ec8c6b | 237 | if (strcmp(cipher, "none") != 0) { |
238 | error("unsupported cipher %s", cipher); | |
239 | xfree(cipher); | |
240 | buffer_free(&b); | |
457fc0c6 | 241 | xfree(type); |
94ec8c6b | 242 | return NULL; |
243 | } | |
244 | xfree(cipher); | |
245 | ||
457fc0c6 | 246 | if (strstr(type, "dsa")) { |
247 | ktype = KEY_DSA; | |
248 | } else if (strstr(type, "rsa")) { | |
249 | ktype = KEY_RSA; | |
250 | } else { | |
3c460ede | 251 | buffer_free(&b); |
457fc0c6 | 252 | xfree(type); |
94ec8c6b | 253 | return NULL; |
254 | } | |
457fc0c6 | 255 | key = key_new_private(ktype); |
256 | xfree(type); | |
257 | ||
258 | switch (key->type) { | |
259 | case KEY_DSA: | |
260 | buffer_get_bignum_bits(&b, key->dsa->p); | |
261 | buffer_get_bignum_bits(&b, key->dsa->g); | |
262 | buffer_get_bignum_bits(&b, key->dsa->q); | |
263 | buffer_get_bignum_bits(&b, key->dsa->pub_key); | |
264 | buffer_get_bignum_bits(&b, key->dsa->priv_key); | |
265 | break; | |
266 | case KEY_RSA: | |
2e0becb6 | 267 | e = buffer_get_char(&b); |
268 | debug("e %lx", e); | |
269 | if (e < 30) { | |
270 | e <<= 8; | |
271 | e += buffer_get_char(&b); | |
272 | debug("e %lx", e); | |
273 | e <<= 8; | |
274 | e += buffer_get_char(&b); | |
275 | debug("e %lx", e); | |
276 | } | |
277 | if (!BN_set_word(key->rsa->e, e)) { | |
457fc0c6 | 278 | buffer_free(&b); |
279 | key_free(key); | |
280 | return NULL; | |
281 | } | |
282 | buffer_get_bignum_bits(&b, key->rsa->d); | |
283 | buffer_get_bignum_bits(&b, key->rsa->n); | |
284 | buffer_get_bignum_bits(&b, key->rsa->iqmp); | |
285 | buffer_get_bignum_bits(&b, key->rsa->q); | |
286 | buffer_get_bignum_bits(&b, key->rsa->p); | |
2b63e803 | 287 | rsa_generate_additional_parameters(key->rsa); |
457fc0c6 | 288 | break; |
289 | } | |
94ec8c6b | 290 | rlen = buffer_len(&b); |
6aacefa7 | 291 | if (rlen != 0) |
457fc0c6 | 292 | error("do_convert_private_ssh2_from_blob: " |
293 | "remaining bytes in key blob %d", rlen); | |
94ec8c6b | 294 | buffer_free(&b); |
a599bd06 | 295 | |
296 | /* try the key */ | |
297 | key_sign(key, &sig, &slen, data, sizeof(data)); | |
298 | key_verify(key, sig, slen, data, sizeof(data)); | |
299 | xfree(sig); | |
94ec8c6b | 300 | return key; |
301 | } | |
302 | ||
396c147e | 303 | static void |
a306f2dd | 304 | do_convert_from_ssh2(struct passwd *pw) |
305 | { | |
306 | Key *k; | |
307 | int blen; | |
783dbbdc | 308 | u_int len; |
a306f2dd | 309 | char line[1024], *p; |
cf54363d | 310 | u_char blob[8096]; |
a306f2dd | 311 | char encoded[8096]; |
312 | struct stat st; | |
94ec8c6b | 313 | int escaped = 0, private = 0, ok; |
a306f2dd | 314 | FILE *fp; |
315 | ||
316 | if (!have_identity) | |
317 | ask_filename(pw, "Enter file in which the key is"); | |
318 | if (stat(identity_file, &st) < 0) { | |
319 | perror(identity_file); | |
320 | exit(1); | |
321 | } | |
322 | fp = fopen(identity_file, "r"); | |
323 | if (fp == NULL) { | |
324 | perror(identity_file); | |
325 | exit(1); | |
326 | } | |
327 | encoded[0] = '\0'; | |
328 | while (fgets(line, sizeof(line), fp)) { | |
d0c832f3 | 329 | if (!(p = strchr(line, '\n'))) { |
330 | fprintf(stderr, "input line too long.\n"); | |
331 | exit(1); | |
332 | } | |
333 | if (p > line && p[-1] == '\\') | |
334 | escaped++; | |
a306f2dd | 335 | if (strncmp(line, "----", 4) == 0 || |
336 | strstr(line, ": ") != NULL) { | |
94ec8c6b | 337 | if (strstr(line, SSH_COM_PRIVATE_BEGIN) != NULL) |
338 | private = 1; | |
a599bd06 | 339 | if (strstr(line, " END ") != NULL) { |
340 | break; | |
341 | } | |
012bc0e1 | 342 | /* fprintf(stderr, "ignore: %s", line); */ |
a306f2dd | 343 | continue; |
344 | } | |
d0c832f3 | 345 | if (escaped) { |
346 | escaped--; | |
012bc0e1 | 347 | /* fprintf(stderr, "escaped: %s", line); */ |
d0c832f3 | 348 | continue; |
a306f2dd | 349 | } |
350 | *p = '\0'; | |
351 | strlcat(encoded, line, sizeof(encoded)); | |
352 | } | |
783dbbdc | 353 | len = strlen(encoded); |
354 | if (((len % 4) == 3) && | |
355 | (encoded[len-1] == '=') && | |
356 | (encoded[len-2] == '=') && | |
357 | (encoded[len-3] == '=')) | |
358 | encoded[len-3] = '\0'; | |
e6207598 | 359 | blen = uudecode(encoded, blob, sizeof(blob)); |
a306f2dd | 360 | if (blen < 0) { |
361 | fprintf(stderr, "uudecode failed.\n"); | |
362 | exit(1); | |
363 | } | |
94ec8c6b | 364 | k = private ? |
365 | do_convert_private_ssh2_from_blob(blob, blen) : | |
fa08c86b | 366 | key_from_blob(blob, blen); |
94ec8c6b | 367 | if (k == NULL) { |
368 | fprintf(stderr, "decode blob failed.\n"); | |
369 | exit(1); | |
370 | } | |
371 | ok = private ? | |
457fc0c6 | 372 | (k->type == KEY_DSA ? |
373 | PEM_write_DSAPrivateKey(stdout, k->dsa, NULL, NULL, 0, NULL, NULL) : | |
374 | PEM_write_RSAPrivateKey(stdout, k->rsa, NULL, NULL, 0, NULL, NULL)) : | |
94ec8c6b | 375 | key_write(k, stdout); |
376 | if (!ok) { | |
377 | fprintf(stderr, "key write failed"); | |
378 | exit(1); | |
379 | } | |
a306f2dd | 380 | key_free(k); |
4ccb828d | 381 | if (!private) |
382 | fprintf(stdout, "\n"); | |
a306f2dd | 383 | fclose(fp); |
384 | exit(0); | |
385 | } | |
386 | ||
396c147e | 387 | static void |
a306f2dd | 388 | do_print_public(struct passwd *pw) |
389 | { | |
aeaa3d9e | 390 | Key *prv; |
a306f2dd | 391 | struct stat st; |
392 | ||
393 | if (!have_identity) | |
394 | ask_filename(pw, "Enter file in which the key is"); | |
395 | if (stat(identity_file, &st) < 0) { | |
396 | perror(identity_file); | |
397 | exit(1); | |
398 | } | |
abe0fb9f | 399 | prv = load_identity(identity_file); |
aeaa3d9e | 400 | if (prv == NULL) { |
a306f2dd | 401 | fprintf(stderr, "load failed\n"); |
402 | exit(1); | |
403 | } | |
aeaa3d9e | 404 | if (!key_write(prv, stdout)) |
a306f2dd | 405 | fprintf(stderr, "key_write failed"); |
aeaa3d9e | 406 | key_free(prv); |
a306f2dd | 407 | fprintf(stdout, "\n"); |
408 | exit(0); | |
409 | } | |
410 | ||
4f831fd7 | 411 | #ifdef SMARTCARD |
2b30154a | 412 | static void |
93a56445 | 413 | do_upload(struct passwd *pw, const char *sc_reader_id) |
2b30154a | 414 | { |
2b30154a | 415 | Key *prv = NULL; |
416 | struct stat st; | |
b9f62352 | 417 | int ret; |
418 | ||
2b30154a | 419 | if (!have_identity) |
420 | ask_filename(pw, "Enter file in which the key is"); | |
421 | if (stat(identity_file, &st) < 0) { | |
422 | perror(identity_file); | |
b9f62352 | 423 | exit(1); |
2b30154a | 424 | } |
425 | prv = load_identity(identity_file); | |
426 | if (prv == NULL) { | |
427 | error("load failed"); | |
b9f62352 | 428 | exit(1); |
49ccba9c | 429 | } |
b9f62352 | 430 | ret = sc_put_key(prv, sc_reader_id); |
431 | key_free(prv); | |
432 | if (ret < 0) | |
433 | exit(1); | |
bbe88b6d | 434 | logit("loading key done"); |
b9f62352 | 435 | exit(0); |
2b30154a | 436 | } |
93a56445 | 437 | |
438 | static void | |
439 | do_download(struct passwd *pw, const char *sc_reader_id) | |
440 | { | |
0659cace | 441 | Key **keys = NULL; |
442 | int i; | |
93a56445 | 443 | |
0659cace | 444 | keys = sc_get_keys(sc_reader_id, NULL); |
445 | if (keys == NULL) | |
93a56445 | 446 | fatal("cannot read public key from smartcard"); |
0659cace | 447 | for (i = 0; keys[i]; i++) { |
448 | key_write(keys[i], stdout); | |
449 | key_free(keys[i]); | |
450 | fprintf(stdout, "\n"); | |
451 | } | |
452 | xfree(keys); | |
93a56445 | 453 | exit(0); |
454 | } | |
3e984472 | 455 | #endif /* SMARTCARD */ |
2b30154a | 456 | |
396c147e | 457 | static void |
f095fcc7 | 458 | do_fingerprint(struct passwd *pw) |
459 | { | |
c8d54615 | 460 | FILE *f; |
a306f2dd | 461 | Key *public; |
aaf45d87 | 462 | char *comment = NULL, *cp, *ep, line[16*1024], *fp; |
17a3011c | 463 | int i, skip = 0, num = 1, invalid = 1; |
464 | enum fp_rep rep; | |
465 | enum fp_type fptype; | |
5260325f | 466 | struct stat st; |
467 | ||
aeaa3d9e | 468 | fptype = print_bubblebabble ? SSH_FP_SHA1 : SSH_FP_MD5; |
469 | rep = print_bubblebabble ? SSH_FP_BUBBLEBABBLE : SSH_FP_HEX; | |
aaf45d87 | 470 | |
5260325f | 471 | if (!have_identity) |
472 | ask_filename(pw, "Enter file in which the key is"); | |
473 | if (stat(identity_file, &st) < 0) { | |
474 | perror(identity_file); | |
475 | exit(1); | |
476 | } | |
aeaa3d9e | 477 | public = key_load_public(identity_file, &comment); |
478 | if (public != NULL) { | |
479 | fp = key_fingerprint(public, fptype, rep); | |
512df038 | 480 | printf("%u %s %s\n", key_size(public), fp, comment); |
a306f2dd | 481 | key_free(public); |
fa08c86b | 482 | xfree(comment); |
aaf45d87 | 483 | xfree(fp); |
c8d54615 | 484 | exit(0); |
485 | } | |
aeaa3d9e | 486 | if (comment) |
487 | xfree(comment); | |
c8d54615 | 488 | |
489 | f = fopen(identity_file, "r"); | |
490 | if (f != NULL) { | |
c8d54615 | 491 | while (fgets(line, sizeof(line), f)) { |
492 | i = strlen(line) - 1; | |
493 | if (line[i] != '\n') { | |
494 | error("line %d too long: %.40s...", num, line); | |
495 | skip = 1; | |
496 | continue; | |
497 | } | |
498 | num++; | |
499 | if (skip) { | |
500 | skip = 0; | |
501 | continue; | |
502 | } | |
503 | line[i] = '\0'; | |
504 | ||
505 | /* Skip leading whitespace, empty and comment lines. */ | |
506 | for (cp = line; *cp == ' ' || *cp == '\t'; cp++) | |
507 | ; | |
508 | if (!*cp || *cp == '\n' || *cp == '#') | |
509 | continue ; | |
510 | i = strtol(cp, &ep, 10); | |
511 | if (i == 0 || ep == NULL || (*ep != ' ' && *ep != '\t')) { | |
512 | int quoted = 0; | |
513 | comment = cp; | |
512df038 | 514 | for (; *cp && (quoted || (*cp != ' ' && |
515 | *cp != '\t')); cp++) { | |
c8d54615 | 516 | if (*cp == '\\' && cp[1] == '"') |
517 | cp++; /* Skip both */ | |
518 | else if (*cp == '"') | |
519 | quoted = !quoted; | |
520 | } | |
521 | if (!*cp) | |
522 | continue; | |
523 | *cp++ = '\0'; | |
524 | } | |
525 | ep = cp; | |
efcae5b1 | 526 | public = key_new(KEY_RSA1); |
527 | if (key_read(public, &cp) != 1) { | |
528 | cp = ep; | |
529 | key_free(public); | |
530 | public = key_new(KEY_UNSPEC); | |
531 | if (key_read(public, &cp) != 1) { | |
532 | key_free(public); | |
533 | continue; | |
534 | } | |
5260325f | 535 | } |
efcae5b1 | 536 | comment = *cp ? cp : comment; |
aeaa3d9e | 537 | fp = key_fingerprint(public, fptype, rep); |
512df038 | 538 | printf("%u %s %s\n", key_size(public), fp, |
efcae5b1 | 539 | comment ? comment : "no comment"); |
aaf45d87 | 540 | xfree(fp); |
aeaa3d9e | 541 | key_free(public); |
efcae5b1 | 542 | invalid = 0; |
5260325f | 543 | } |
c8d54615 | 544 | fclose(f); |
545 | } | |
546 | if (invalid) { | |
f564d016 | 547 | printf("%s is not a public key file.\n", identity_file); |
c8d54615 | 548 | exit(1); |
5260325f | 549 | } |
5260325f | 550 | exit(0); |
f095fcc7 | 551 | } |
552 | ||
bdffbcdc | 553 | static void |
554 | print_host(FILE *f, char *name, Key *public, int hash) | |
555 | { | |
556 | if (hash && (name = host_hash(name, NULL, 0)) == NULL) | |
557 | fatal("hash_host failed"); | |
558 | fprintf(f, "%s ", name); | |
559 | if (!key_write(public, f)) | |
560 | fatal("key_write failed"); | |
561 | fprintf(f, "\n"); | |
562 | } | |
563 | ||
564 | static void | |
565 | do_known_hosts(struct passwd *pw, const char *name) | |
566 | { | |
567 | FILE *in, *out = stdout; | |
568 | Key *public; | |
569 | char *cp, *cp2, *kp, *kp2; | |
570 | char line[16*1024], tmp[MAXPATHLEN], old[MAXPATHLEN]; | |
571 | int c, i, skip = 0, inplace = 0, num = 0, invalid = 0, has_unhashed = 0; | |
572 | ||
573 | if (!have_identity) { | |
574 | cp = tilde_expand_filename(_PATH_SSH_USER_HOSTFILE, pw->pw_uid); | |
575 | if (strlcpy(identity_file, cp, sizeof(identity_file)) >= | |
576 | sizeof(identity_file)) | |
577 | fatal("Specified known hosts path too long"); | |
578 | xfree(cp); | |
579 | have_identity = 1; | |
580 | } | |
581 | if ((in = fopen(identity_file, "r")) == NULL) | |
582 | fatal("fopen: %s", strerror(errno)); | |
583 | ||
584 | /* | |
585 | * Find hosts goes to stdout, hash and deletions happen in-place | |
586 | * A corner case is ssh-keygen -HF foo, which should go to stdout | |
587 | */ | |
588 | if (!find_host && (hash_hosts || delete_host)) { | |
589 | if (strlcpy(tmp, identity_file, sizeof(tmp)) >= sizeof(tmp) || | |
590 | strlcat(tmp, ".XXXXXXXXXX", sizeof(tmp)) >= sizeof(tmp) || | |
591 | strlcpy(old, identity_file, sizeof(old)) >= sizeof(old) || | |
592 | strlcat(old, ".old", sizeof(old)) >= sizeof(old)) | |
593 | fatal("known_hosts path too long"); | |
594 | umask(077); | |
595 | if ((c = mkstemp(tmp)) == -1) | |
596 | fatal("mkstemp: %s", strerror(errno)); | |
597 | if ((out = fdopen(c, "w")) == NULL) { | |
598 | c = errno; | |
599 | unlink(tmp); | |
600 | fatal("fdopen: %s", strerror(c)); | |
601 | } | |
602 | inplace = 1; | |
603 | } | |
604 | ||
605 | while (fgets(line, sizeof(line), in)) { | |
606 | num++; | |
607 | i = strlen(line) - 1; | |
608 | if (line[i] != '\n') { | |
609 | error("line %d too long: %.40s...", num, line); | |
610 | skip = 1; | |
611 | invalid = 1; | |
612 | continue; | |
613 | } | |
614 | if (skip) { | |
615 | skip = 0; | |
616 | continue; | |
617 | } | |
618 | line[i] = '\0'; | |
619 | ||
620 | /* Skip leading whitespace, empty and comment lines. */ | |
621 | for (cp = line; *cp == ' ' || *cp == '\t'; cp++) | |
622 | ; | |
623 | if (!*cp || *cp == '\n' || *cp == '#') { | |
624 | if (inplace) | |
625 | fprintf(out, "%s\n", cp); | |
626 | continue; | |
627 | } | |
628 | /* Find the end of the host name portion. */ | |
629 | for (kp = cp; *kp && *kp != ' ' && *kp != '\t'; kp++) | |
630 | ; | |
631 | if (*kp == '\0' || *(kp + 1) == '\0') { | |
632 | error("line %d missing key: %.40s...", | |
633 | num, line); | |
634 | invalid = 1; | |
635 | continue; | |
636 | } | |
637 | *kp++ = '\0'; | |
638 | kp2 = kp; | |
639 | ||
640 | public = key_new(KEY_RSA1); | |
641 | if (key_read(public, &kp) != 1) { | |
642 | kp = kp2; | |
643 | key_free(public); | |
644 | public = key_new(KEY_UNSPEC); | |
645 | if (key_read(public, &kp) != 1) { | |
646 | error("line %d invalid key: %.40s...", | |
647 | num, line); | |
648 | key_free(public); | |
649 | invalid = 1; | |
650 | continue; | |
651 | } | |
652 | } | |
653 | ||
654 | if (*cp == HASH_DELIM) { | |
655 | if (find_host || delete_host) { | |
656 | cp2 = host_hash(name, cp, strlen(cp)); | |
657 | if (cp2 == NULL) { | |
658 | error("line %d: invalid hashed " | |
659 | "name: %.64s...", num, line); | |
660 | invalid = 1; | |
661 | continue; | |
662 | } | |
663 | c = (strcmp(cp2, cp) == 0); | |
664 | if (find_host && c) { | |
665 | printf("# Host %s found: " | |
666 | "line %d type %s\n", name, | |
667 | num, key_type(public)); | |
668 | print_host(out, cp, public, 0); | |
669 | } | |
670 | if (delete_host && !c) | |
671 | print_host(out, cp, public, 0); | |
672 | } else if (hash_hosts) | |
673 | print_host(out, cp, public, 0); | |
674 | } else { | |
675 | if (find_host || delete_host) { | |
676 | c = (match_hostname(name, cp, | |
677 | strlen(cp)) == 1); | |
678 | if (find_host && c) { | |
679 | printf("# Host %s found: " | |
680 | "line %d type %s\n", name, | |
681 | num, key_type(public)); | |
682 | print_host(out, cp, public, hash_hosts); | |
683 | } | |
684 | if (delete_host && !c) | |
685 | print_host(out, cp, public, 0); | |
686 | } else if (hash_hosts) { | |
f8cc7664 | 687 | for (cp2 = strsep(&cp, ","); |
bdffbcdc | 688 | cp2 != NULL && *cp2 != '\0'; |
bc7119ba | 689 | cp2 = strsep(&cp, ",")) { |
690 | if (strcspn(cp2, "*?!") != strlen(cp2)) | |
691 | fprintf(stderr, "Warning: " | |
692 | "ignoring host name with " | |
693 | "metacharacters: %.64s\n", | |
694 | cp2); | |
695 | else | |
696 | print_host(out, cp2, public, 1); | |
697 | } | |
bdffbcdc | 698 | has_unhashed = 1; |
699 | } | |
700 | } | |
701 | key_free(public); | |
702 | } | |
703 | fclose(in); | |
704 | ||
705 | if (invalid) { | |
706 | fprintf(stderr, "%s is not a valid known_host file.\n", | |
707 | identity_file); | |
708 | if (inplace) { | |
709 | fprintf(stderr, "Not replacing existing known_hosts " | |
604dac32 | 710 | "file because of errors\n"); |
bdffbcdc | 711 | fclose(out); |
712 | unlink(tmp); | |
713 | } | |
714 | exit(1); | |
715 | } | |
716 | ||
717 | if (inplace) { | |
718 | fclose(out); | |
719 | ||
720 | /* Backup existing file */ | |
721 | if (unlink(old) == -1 && errno != ENOENT) | |
722 | fatal("unlink %.100s: %s", old, strerror(errno)); | |
723 | if (link(identity_file, old) == -1) | |
724 | fatal("link %.100s to %.100s: %s", identity_file, old, | |
725 | strerror(errno)); | |
726 | /* Move new one into place */ | |
727 | if (rename(tmp, identity_file) == -1) { | |
728 | error("rename\"%s\" to \"%s\": %s", tmp, identity_file, | |
729 | strerror(errno)); | |
730 | unlink(tmp); | |
731 | unlink(old); | |
732 | exit(1); | |
733 | } | |
734 | ||
735 | fprintf(stderr, "%s updated.\n", identity_file); | |
736 | fprintf(stderr, "Original contents retained as %s\n", old); | |
737 | if (has_unhashed) { | |
738 | fprintf(stderr, "WARNING: %s contains unhashed " | |
739 | "entries\n", old); | |
740 | fprintf(stderr, "Delete this file to ensure privacy " | |
4e2e5cfd | 741 | "of hostnames\n"); |
bdffbcdc | 742 | } |
743 | } | |
744 | ||
745 | exit(0); | |
746 | } | |
747 | ||
5260325f | 748 | /* |
749 | * Perform changing a passphrase. The argument is the passwd structure | |
750 | * for the current user. | |
751 | */ | |
396c147e | 752 | static void |
f095fcc7 | 753 | do_change_passphrase(struct passwd *pw) |
754 | { | |
5260325f | 755 | char *comment; |
756 | char *old_passphrase, *passphrase1, *passphrase2; | |
757 | struct stat st; | |
a306f2dd | 758 | Key *private; |
5260325f | 759 | |
760 | if (!have_identity) | |
761 | ask_filename(pw, "Enter file in which the key is"); | |
5260325f | 762 | if (stat(identity_file, &st) < 0) { |
763 | perror(identity_file); | |
764 | exit(1); | |
765 | } | |
5260325f | 766 | /* Try to load the file with empty passphrase. */ |
aeaa3d9e | 767 | private = key_load_private(identity_file, "", &comment); |
768 | if (private == NULL) { | |
5260325f | 769 | if (identity_passphrase) |
770 | old_passphrase = xstrdup(identity_passphrase); | |
771 | else | |
1843a425 | 772 | old_passphrase = |
773 | read_passphrase("Enter old passphrase: ", | |
774 | RP_ALLOW_STDIN); | |
775 | private = key_load_private(identity_file, old_passphrase, | |
776 | &comment); | |
aeaa3d9e | 777 | memset(old_passphrase, 0, strlen(old_passphrase)); |
778 | xfree(old_passphrase); | |
779 | if (private == NULL) { | |
5260325f | 780 | printf("Bad passphrase.\n"); |
781 | exit(1); | |
782 | } | |
5260325f | 783 | } |
784 | printf("Key has comment '%s'\n", comment); | |
785 | ||
786 | /* Ask the new passphrase (twice). */ | |
787 | if (identity_new_passphrase) { | |
788 | passphrase1 = xstrdup(identity_new_passphrase); | |
789 | passphrase2 = NULL; | |
790 | } else { | |
791 | passphrase1 = | |
1843a425 | 792 | read_passphrase("Enter new passphrase (empty for no " |
793 | "passphrase): ", RP_ALLOW_STDIN); | |
794 | passphrase2 = read_passphrase("Enter same passphrase again: ", | |
184eed6a | 795 | RP_ALLOW_STDIN); |
5260325f | 796 | |
797 | /* Verify that they are the same. */ | |
798 | if (strcmp(passphrase1, passphrase2) != 0) { | |
799 | memset(passphrase1, 0, strlen(passphrase1)); | |
800 | memset(passphrase2, 0, strlen(passphrase2)); | |
801 | xfree(passphrase1); | |
802 | xfree(passphrase2); | |
803 | printf("Pass phrases do not match. Try again.\n"); | |
804 | exit(1); | |
805 | } | |
806 | /* Destroy the other copy. */ | |
807 | memset(passphrase2, 0, strlen(passphrase2)); | |
808 | xfree(passphrase2); | |
8efc0c15 | 809 | } |
8efc0c15 | 810 | |
5260325f | 811 | /* Save the file using the new passphrase. */ |
aeaa3d9e | 812 | if (!key_save_private(private, identity_file, passphrase1, comment)) { |
58cfa257 | 813 | printf("Saving the key failed: %s.\n", identity_file); |
5260325f | 814 | memset(passphrase1, 0, strlen(passphrase1)); |
815 | xfree(passphrase1); | |
a306f2dd | 816 | key_free(private); |
5260325f | 817 | xfree(comment); |
818 | exit(1); | |
819 | } | |
820 | /* Destroy the passphrase and the copy of the key in memory. */ | |
821 | memset(passphrase1, 0, strlen(passphrase1)); | |
822 | xfree(passphrase1); | |
a306f2dd | 823 | key_free(private); /* Destroys contents */ |
5260325f | 824 | xfree(comment); |
825 | ||
826 | printf("Your identification has been saved with the new passphrase.\n"); | |
827 | exit(0); | |
828 | } | |
8efc0c15 | 829 | |
21289cd0 | 830 | /* |
831 | * Print the SSHFP RR. | |
832 | */ | |
833 | static void | |
ca75d7de | 834 | do_print_resource_record(struct passwd *pw, char *hname) |
21289cd0 | 835 | { |
836 | Key *public; | |
837 | char *comment = NULL; | |
838 | struct stat st; | |
839 | ||
840 | if (!have_identity) | |
841 | ask_filename(pw, "Enter file in which the key is"); | |
842 | if (stat(identity_file, &st) < 0) { | |
843 | perror(identity_file); | |
844 | exit(1); | |
845 | } | |
846 | public = key_load_public(identity_file, &comment); | |
847 | if (public != NULL) { | |
ca75d7de | 848 | export_dns_rr(hname, public, stdout, print_generic); |
21289cd0 | 849 | key_free(public); |
850 | xfree(comment); | |
851 | exit(0); | |
852 | } | |
853 | if (comment) | |
854 | xfree(comment); | |
855 | ||
856 | printf("failed to read v2 public key from %s.\n", identity_file); | |
857 | exit(1); | |
858 | } | |
21289cd0 | 859 | |
5260325f | 860 | /* |
861 | * Change the comment of a private key file. | |
862 | */ | |
396c147e | 863 | static void |
8efc0c15 | 864 | do_change_comment(struct passwd *pw) |
865 | { | |
1c9a907f | 866 | char new_comment[1024], *comment, *passphrase; |
aeaa3d9e | 867 | Key *private; |
868 | Key *public; | |
5260325f | 869 | struct stat st; |
870 | FILE *f; | |
1c9a907f | 871 | int fd; |
5260325f | 872 | |
873 | if (!have_identity) | |
874 | ask_filename(pw, "Enter file in which the key is"); | |
5260325f | 875 | if (stat(identity_file, &st) < 0) { |
876 | perror(identity_file); | |
877 | exit(1); | |
878 | } | |
aeaa3d9e | 879 | private = key_load_private(identity_file, "", &comment); |
880 | if (private == NULL) { | |
5260325f | 881 | if (identity_passphrase) |
882 | passphrase = xstrdup(identity_passphrase); | |
883 | else if (identity_new_passphrase) | |
884 | passphrase = xstrdup(identity_new_passphrase); | |
885 | else | |
1843a425 | 886 | passphrase = read_passphrase("Enter passphrase: ", |
887 | RP_ALLOW_STDIN); | |
5260325f | 888 | /* Try to load using the passphrase. */ |
aeaa3d9e | 889 | private = key_load_private(identity_file, passphrase, &comment); |
890 | if (private == NULL) { | |
5260325f | 891 | memset(passphrase, 0, strlen(passphrase)); |
892 | xfree(passphrase); | |
893 | printf("Bad passphrase.\n"); | |
894 | exit(1); | |
895 | } | |
aeaa3d9e | 896 | } else { |
897 | passphrase = xstrdup(""); | |
5260325f | 898 | } |
aeaa3d9e | 899 | if (private->type != KEY_RSA1) { |
900 | fprintf(stderr, "Comments are only supported for RSA1 keys.\n"); | |
901 | key_free(private); | |
902 | exit(1); | |
184eed6a | 903 | } |
5260325f | 904 | printf("Key now has comment '%s'\n", comment); |
905 | ||
906 | if (identity_comment) { | |
907 | strlcpy(new_comment, identity_comment, sizeof(new_comment)); | |
908 | } else { | |
909 | printf("Enter new comment: "); | |
910 | fflush(stdout); | |
911 | if (!fgets(new_comment, sizeof(new_comment), stdin)) { | |
912 | memset(passphrase, 0, strlen(passphrase)); | |
a306f2dd | 913 | key_free(private); |
5260325f | 914 | exit(1); |
915 | } | |
5260325f | 916 | if (strchr(new_comment, '\n')) |
917 | *strchr(new_comment, '\n') = 0; | |
918 | } | |
919 | ||
920 | /* Save the file using the new passphrase. */ | |
aeaa3d9e | 921 | if (!key_save_private(private, identity_file, passphrase, new_comment)) { |
58cfa257 | 922 | printf("Saving the key failed: %s.\n", identity_file); |
5260325f | 923 | memset(passphrase, 0, strlen(passphrase)); |
924 | xfree(passphrase); | |
a306f2dd | 925 | key_free(private); |
5260325f | 926 | xfree(comment); |
927 | exit(1); | |
8efc0c15 | 928 | } |
5260325f | 929 | memset(passphrase, 0, strlen(passphrase)); |
930 | xfree(passphrase); | |
aeaa3d9e | 931 | public = key_from_private(private); |
a306f2dd | 932 | key_free(private); |
5260325f | 933 | |
5260325f | 934 | strlcat(identity_file, ".pub", sizeof(identity_file)); |
1c9a907f | 935 | fd = open(identity_file, O_WRONLY | O_CREAT | O_TRUNC, 0644); |
936 | if (fd == -1) { | |
5260325f | 937 | printf("Could not save your public key in %s\n", identity_file); |
938 | exit(1); | |
939 | } | |
1c9a907f | 940 | f = fdopen(fd, "w"); |
941 | if (f == NULL) { | |
942 | printf("fdopen %s failed", identity_file); | |
943 | exit(1); | |
944 | } | |
a306f2dd | 945 | if (!key_write(public, f)) |
946 | fprintf(stderr, "write key failed"); | |
947 | key_free(public); | |
948 | fprintf(f, " %s\n", new_comment); | |
5260325f | 949 | fclose(f); |
950 | ||
951 | xfree(comment); | |
952 | ||
953 | printf("The comment in your key file has been changed.\n"); | |
954 | exit(0); | |
8efc0c15 | 955 | } |
956 | ||
396c147e | 957 | static void |
5ad13cd7 | 958 | usage(void) |
959 | { | |
58153e34 | 960 | fprintf(stderr, "Usage: %s [options]\n", __progname); |
961 | fprintf(stderr, "Options:\n"); | |
4feb61af | 962 | fprintf(stderr, " -a trials Number of trials for screening DH-GEX moduli.\n"); |
963 | fprintf(stderr, " -B Show bubblebabble digest of key file.\n"); | |
58153e34 | 964 | fprintf(stderr, " -b bits Number of bits in the key to create.\n"); |
4feb61af | 965 | fprintf(stderr, " -C comment Provide new comment.\n"); |
58153e34 | 966 | fprintf(stderr, " -c Change comment in private and public key files.\n"); |
4feb61af | 967 | #ifdef SMARTCARD |
968 | fprintf(stderr, " -D reader Download public key from smartcard.\n"); | |
969 | #endif /* SMARTCARD */ | |
58153e34 | 970 | fprintf(stderr, " -e Convert OpenSSH to IETF SECSH key file.\n"); |
4feb61af | 971 | fprintf(stderr, " -F hostname Find hostname in known hosts file.\n"); |
58153e34 | 972 | fprintf(stderr, " -f filename Filename of the key file.\n"); |
4feb61af | 973 | fprintf(stderr, " -G file Generate candidates for DH-GEX moduli.\n"); |
21289cd0 | 974 | fprintf(stderr, " -g Use generic DNS resource record format.\n"); |
4feb61af | 975 | fprintf(stderr, " -H Hash names in known_hosts file.\n"); |
58153e34 | 976 | fprintf(stderr, " -i Convert IETF SECSH to OpenSSH key file.\n"); |
977 | fprintf(stderr, " -l Show fingerprint of key file.\n"); | |
4feb61af | 978 | fprintf(stderr, " -M memory Amount of memory (MB) to use for generating DH-GEX moduli.\n"); |
58153e34 | 979 | fprintf(stderr, " -N phrase Provide new passphrase.\n"); |
980 | fprintf(stderr, " -P phrase Provide old passphrase.\n"); | |
4feb61af | 981 | fprintf(stderr, " -p Change passphrase of private key file.\n"); |
982 | fprintf(stderr, " -q Quiet.\n"); | |
983 | fprintf(stderr, " -R hostname Remove host from known_hosts file.\n"); | |
21289cd0 | 984 | fprintf(stderr, " -r hostname Print DNS resource record.\n"); |
4feb61af | 985 | fprintf(stderr, " -S start Start point (hex) for generating DH-GEX moduli.\n"); |
986 | fprintf(stderr, " -T file Screen candidates for DH-GEX moduli.\n"); | |
987 | fprintf(stderr, " -t type Specify type of key to create.\n"); | |
58153e34 | 988 | #ifdef SMARTCARD |
58153e34 | 989 | fprintf(stderr, " -U reader Upload private key to smartcard.\n"); |
990 | #endif /* SMARTCARD */ | |
4feb61af | 991 | fprintf(stderr, " -v Verbose.\n"); |
992 | fprintf(stderr, " -W gen Generator to use for generating DH-GEX moduli.\n"); | |
993 | fprintf(stderr, " -y Read private key file and print public key.\n"); | |
c35a6dc5 | 994 | |
5260325f | 995 | exit(1); |
5ad13cd7 | 996 | } |
997 | ||
5260325f | 998 | /* |
999 | * Main program for key management. | |
1000 | */ | |
8efc0c15 | 1001 | int |
1002 | main(int ac, char **av) | |
1003 | { | |
3dc93cd8 | 1004 | char dotsshdir[MAXPATHLEN], comment[1024], *passphrase1, *passphrase2; |
8f52069e | 1005 | char out_file[MAXPATHLEN], *reader_id = NULL; |
bdffbcdc | 1006 | char *rr_hostname = NULL; |
1c9a907f | 1007 | Key *private, *public; |
5260325f | 1008 | struct passwd *pw; |
5260325f | 1009 | struct stat st; |
c784ae09 | 1010 | int opt, type, fd, download = 0; |
2a1995a3 | 1011 | u_int32_t memory = 0, generator_wanted = 0, trials = 100; |
c35a6dc5 | 1012 | int do_gen_candidates = 0, do_screen_candidates = 0; |
c6fbc95a | 1013 | int log_level = SYSLOG_LEVEL_INFO; |
c35a6dc5 | 1014 | BIGNUM *start = NULL; |
5260325f | 1015 | FILE *f; |
de4feb6b | 1016 | const char *errstr; |
fa08c86b | 1017 | |
5260325f | 1018 | extern int optind; |
1019 | extern char *optarg; | |
1020 | ||
fd6168c1 | 1021 | /* Ensure that fds 0, 1 and 2 are open or directed to /dev/null */ |
1022 | sanitise_stdfd(); | |
1023 | ||
fda04d7d | 1024 | __progname = ssh_get_progname(av[0]); |
264dce47 | 1025 | |
fa649821 | 1026 | SSLeay_add_all_algorithms(); |
c35a6dc5 | 1027 | log_init(av[0], SYSLOG_LEVEL_INFO, SYSLOG_FACILITY_USER, 1); |
1028 | ||
ce88d9df | 1029 | init_rng(); |
1030 | seed_rng(); | |
a306f2dd | 1031 | |
aa3378df | 1032 | /* we need this for the home * directory. */ |
5260325f | 1033 | pw = getpwuid(getuid()); |
1034 | if (!pw) { | |
1035 | printf("You don't exist, go away!\n"); | |
1036 | exit(1); | |
1037 | } | |
a306f2dd | 1038 | if (gethostname(hostname, sizeof(hostname)) < 0) { |
1039 | perror("gethostname"); | |
1040 | exit(1); | |
1041 | } | |
aa3378df | 1042 | |
c35a6dc5 | 1043 | while ((opt = getopt(ac, av, |
bdffbcdc | 1044 | "degiqpclBHvxXyF:b:f:t:U:D:P:N:C:r:g:R:T:G:M:S:a:W:")) != -1) { |
5260325f | 1045 | switch (opt) { |
1046 | case 'b': | |
c784ae09 | 1047 | bits = strtonum(optarg, 512, 32768, &errstr); |
de4feb6b | 1048 | if (errstr) |
1049 | fatal("Bits has bad value %s (%s)", | |
1050 | optarg, errstr); | |
5260325f | 1051 | break; |
bdffbcdc | 1052 | case 'F': |
1053 | find_host = 1; | |
1054 | rr_hostname = optarg; | |
1055 | break; | |
1056 | case 'H': | |
1057 | hash_hosts = 1; | |
1058 | break; | |
1059 | case 'R': | |
1060 | delete_host = 1; | |
1061 | rr_hostname = optarg; | |
1062 | break; | |
5260325f | 1063 | case 'l': |
1064 | print_fingerprint = 1; | |
1065 | break; | |
aaf45d87 | 1066 | case 'B': |
1067 | print_bubblebabble = 1; | |
1068 | break; | |
5260325f | 1069 | case 'p': |
1070 | change_passphrase = 1; | |
1071 | break; | |
5260325f | 1072 | case 'c': |
1073 | change_comment = 1; | |
1074 | break; | |
5260325f | 1075 | case 'f': |
c784ae09 | 1076 | if (strlcpy(identity_file, optarg, sizeof(identity_file)) >= |
1077 | sizeof(identity_file)) | |
1078 | fatal("Identity filename too long"); | |
5260325f | 1079 | have_identity = 1; |
1080 | break; | |
21289cd0 | 1081 | case 'g': |
1082 | print_generic = 1; | |
1083 | break; | |
5260325f | 1084 | case 'P': |
1085 | identity_passphrase = optarg; | |
1086 | break; | |
5260325f | 1087 | case 'N': |
1088 | identity_new_passphrase = optarg; | |
1089 | break; | |
5260325f | 1090 | case 'C': |
1091 | identity_comment = optarg; | |
1092 | break; | |
5260325f | 1093 | case 'q': |
1094 | quiet = 1; | |
1095 | break; | |
5deceabb | 1096 | case 'e': |
a306f2dd | 1097 | case 'x': |
5deceabb | 1098 | /* export key */ |
a306f2dd | 1099 | convert_to_ssh2 = 1; |
1100 | break; | |
5deceabb | 1101 | case 'i': |
a306f2dd | 1102 | case 'X': |
5deceabb | 1103 | /* import key */ |
a306f2dd | 1104 | convert_from_ssh2 = 1; |
1105 | break; | |
a306f2dd | 1106 | case 'y': |
1107 | print_public = 1; | |
1108 | break; | |
a306f2dd | 1109 | case 'd': |
fa08c86b | 1110 | key_type_name = "dsa"; |
a306f2dd | 1111 | break; |
fa08c86b | 1112 | case 't': |
1113 | key_type_name = optarg; | |
fa08c86b | 1114 | break; |
93a56445 | 1115 | case 'D': |
1116 | download = 1; | |
285d2b15 | 1117 | case 'U': |
93a56445 | 1118 | reader_id = optarg; |
2b30154a | 1119 | break; |
c6fbc95a | 1120 | case 'v': |
1121 | if (log_level == SYSLOG_LEVEL_INFO) | |
1122 | log_level = SYSLOG_LEVEL_DEBUG1; | |
1123 | else { | |
f2107e97 | 1124 | if (log_level >= SYSLOG_LEVEL_DEBUG1 && |
c6fbc95a | 1125 | log_level < SYSLOG_LEVEL_DEBUG3) |
1126 | log_level++; | |
1127 | } | |
1128 | break; | |
21289cd0 | 1129 | case 'r': |
bdffbcdc | 1130 | rr_hostname = optarg; |
21289cd0 | 1131 | break; |
c35a6dc5 | 1132 | case 'W': |
c784ae09 | 1133 | generator_wanted = strtonum(optarg, 1, UINT_MAX, &errstr); |
1134 | if (errstr) | |
1135 | fatal("Desired generator has bad value: %s (%s)", | |
1136 | optarg, errstr); | |
c35a6dc5 | 1137 | break; |
1138 | case 'a': | |
c784ae09 | 1139 | trials = strtonum(optarg, 1, UINT_MAX, &errstr); |
1140 | if (errstr) | |
1141 | fatal("Invalid number of trials: %s (%s)", | |
1142 | optarg, errstr); | |
c35a6dc5 | 1143 | break; |
1144 | case 'M': | |
c784ae09 | 1145 | memory = strtonum(optarg, 1, UINT_MAX, &errstr); |
1146 | if (errstr) { | |
1147 | fatal("Memory limit is %s: %s", errstr, optarg); | |
1148 | } | |
c35a6dc5 | 1149 | break; |
1150 | case 'G': | |
1151 | do_gen_candidates = 1; | |
c784ae09 | 1152 | if (strlcpy(out_file, optarg, sizeof(out_file)) >= |
1153 | sizeof(out_file)) | |
1154 | fatal("Output filename too long"); | |
c35a6dc5 | 1155 | break; |
1156 | case 'T': | |
1157 | do_screen_candidates = 1; | |
c784ae09 | 1158 | if (strlcpy(out_file, optarg, sizeof(out_file)) >= |
1159 | sizeof(out_file)) | |
1160 | fatal("Output filename too long"); | |
c35a6dc5 | 1161 | break; |
1162 | case 'S': | |
1163 | /* XXX - also compare length against bits */ | |
1164 | if (BN_hex2bn(&start, optarg) == 0) | |
1165 | fatal("Invalid start point."); | |
1166 | break; | |
5260325f | 1167 | case '?': |
1168 | default: | |
1169 | usage(); | |
1170 | } | |
1171 | } | |
c6fbc95a | 1172 | |
1173 | /* reinit */ | |
1174 | log_init(av[0], log_level, SYSLOG_FACILITY_USER, 1); | |
1175 | ||
5260325f | 1176 | if (optind < ac) { |
1177 | printf("Too many arguments.\n"); | |
1178 | usage(); | |
1179 | } | |
1180 | if (change_passphrase && change_comment) { | |
1181 | printf("Can only have one of -p and -c.\n"); | |
1182 | usage(); | |
1183 | } | |
bdffbcdc | 1184 | if (delete_host || hash_hosts || find_host) |
1185 | do_known_hosts(pw, rr_hostname); | |
aaf45d87 | 1186 | if (print_fingerprint || print_bubblebabble) |
5260325f | 1187 | do_fingerprint(pw); |
5260325f | 1188 | if (change_passphrase) |
1189 | do_change_passphrase(pw); | |
633151a3 | 1190 | if (change_comment) |
1191 | do_change_comment(pw); | |
ce88d9df | 1192 | if (convert_to_ssh2) |
1193 | do_convert_to_ssh2(pw); | |
1194 | if (convert_from_ssh2) | |
1195 | do_convert_from_ssh2(pw); | |
a306f2dd | 1196 | if (print_public) |
1197 | do_print_public(pw); | |
bdffbcdc | 1198 | if (rr_hostname != NULL) { |
1199 | do_print_resource_record(pw, rr_hostname); | |
21289cd0 | 1200 | } |
93a56445 | 1201 | if (reader_id != NULL) { |
4f831fd7 | 1202 | #ifdef SMARTCARD |
93a56445 | 1203 | if (download) |
1204 | do_download(pw, reader_id); | |
1205 | else | |
1206 | do_upload(pw, reader_id); | |
3e984472 | 1207 | #else /* SMARTCARD */ |
4f831fd7 | 1208 | fatal("no support for smartcards."); |
3e984472 | 1209 | #endif /* SMARTCARD */ |
93a56445 | 1210 | } |
5260325f | 1211 | |
c35a6dc5 | 1212 | if (do_gen_candidates) { |
1213 | FILE *out = fopen(out_file, "w"); | |
b6453d99 | 1214 | |
c35a6dc5 | 1215 | if (out == NULL) { |
1216 | error("Couldn't open modulus candidate file \"%s\": %s", | |
1217 | out_file, strerror(errno)); | |
1218 | return (1); | |
1219 | } | |
1220 | if (gen_candidates(out, memory, bits, start) != 0) | |
1221 | fatal("modulus candidate generation failed\n"); | |
1222 | ||
1223 | return (0); | |
1224 | } | |
1225 | ||
1226 | if (do_screen_candidates) { | |
1227 | FILE *in; | |
1228 | FILE *out = fopen(out_file, "w"); | |
1229 | ||
1230 | if (have_identity && strcmp(identity_file, "-") != 0) { | |
1231 | if ((in = fopen(identity_file, "r")) == NULL) { | |
1232 | fatal("Couldn't open modulus candidate " | |
aff51935 | 1233 | "file \"%s\": %s", identity_file, |
c35a6dc5 | 1234 | strerror(errno)); |
1235 | } | |
1236 | } else | |
1237 | in = stdin; | |
1238 | ||
1239 | if (out == NULL) { | |
1240 | fatal("Couldn't open moduli file \"%s\": %s", | |
1241 | out_file, strerror(errno)); | |
1242 | } | |
1243 | if (prime_test(in, out, trials, generator_wanted) != 0) | |
1244 | fatal("modulus screening failed\n"); | |
08d035b6 | 1245 | return (0); |
c35a6dc5 | 1246 | } |
1247 | ||
5260325f | 1248 | arc4random_stir(); |
1249 | ||
bb28e836 | 1250 | if (key_type_name == NULL) { |
1251 | printf("You must specify a key type (-t).\n"); | |
1252 | usage(); | |
1253 | } | |
c523303b | 1254 | type = key_type_from_name(key_type_name); |
1255 | if (type == KEY_UNSPEC) { | |
1256 | fprintf(stderr, "unknown key type %s\n", key_type_name); | |
1257 | exit(1); | |
a306f2dd | 1258 | } |
fa08c86b | 1259 | if (!quiet) |
c523303b | 1260 | printf("Generating public/private %s key pair.\n", key_type_name); |
fa08c86b | 1261 | private = key_generate(type, bits); |
1262 | if (private == NULL) { | |
1263 | fprintf(stderr, "key_generate failed"); | |
1264 | exit(1); | |
1265 | } | |
1266 | public = key_from_private(private); | |
5260325f | 1267 | |
1268 | if (!have_identity) | |
1269 | ask_filename(pw, "Enter file in which to save the key"); | |
1270 | ||
1271 | /* Create ~/.ssh directory if it doesn\'t already exist. */ | |
42f11eb2 | 1272 | snprintf(dotsshdir, sizeof dotsshdir, "%s/%s", pw->pw_dir, _PATH_SSH_USER_DIR); |
5260325f | 1273 | if (strstr(identity_file, dotsshdir) != NULL && |
1274 | stat(dotsshdir, &st) < 0) { | |
704b1659 | 1275 | if (mkdir(dotsshdir, 0700) < 0) |
5260325f | 1276 | error("Could not create directory '%s'.", dotsshdir); |
1277 | else if (!quiet) | |
1278 | printf("Created directory '%s'.\n", dotsshdir); | |
1279 | } | |
1280 | /* If the file already exists, ask the user to confirm. */ | |
1281 | if (stat(identity_file, &st) >= 0) { | |
1282 | char yesno[3]; | |
1283 | printf("%s already exists.\n", identity_file); | |
1284 | printf("Overwrite (y/n)? "); | |
1285 | fflush(stdout); | |
1286 | if (fgets(yesno, sizeof(yesno), stdin) == NULL) | |
1287 | exit(1); | |
1288 | if (yesno[0] != 'y' && yesno[0] != 'Y') | |
1289 | exit(1); | |
1290 | } | |
1291 | /* Ask for a passphrase (twice). */ | |
1292 | if (identity_passphrase) | |
1293 | passphrase1 = xstrdup(identity_passphrase); | |
1294 | else if (identity_new_passphrase) | |
1295 | passphrase1 = xstrdup(identity_new_passphrase); | |
1296 | else { | |
1297 | passphrase_again: | |
1298 | passphrase1 = | |
1843a425 | 1299 | read_passphrase("Enter passphrase (empty for no " |
1300 | "passphrase): ", RP_ALLOW_STDIN); | |
1301 | passphrase2 = read_passphrase("Enter same passphrase again: ", | |
1302 | RP_ALLOW_STDIN); | |
5260325f | 1303 | if (strcmp(passphrase1, passphrase2) != 0) { |
1843a425 | 1304 | /* |
1305 | * The passphrases do not match. Clear them and | |
1306 | * retry. | |
1307 | */ | |
5260325f | 1308 | memset(passphrase1, 0, strlen(passphrase1)); |
1309 | memset(passphrase2, 0, strlen(passphrase2)); | |
1310 | xfree(passphrase1); | |
1311 | xfree(passphrase2); | |
1312 | printf("Passphrases do not match. Try again.\n"); | |
1313 | goto passphrase_again; | |
1314 | } | |
1315 | /* Clear the other copy of the passphrase. */ | |
1316 | memset(passphrase2, 0, strlen(passphrase2)); | |
1317 | xfree(passphrase2); | |
1318 | } | |
1319 | ||
5260325f | 1320 | if (identity_comment) { |
1321 | strlcpy(comment, identity_comment, sizeof(comment)); | |
1322 | } else { | |
6ae2364d | 1323 | /* Create default commend field for the passphrase. */ |
5260325f | 1324 | snprintf(comment, sizeof comment, "%s@%s", pw->pw_name, hostname); |
1325 | } | |
1326 | ||
1327 | /* Save the key with the given passphrase and comment. */ | |
aeaa3d9e | 1328 | if (!key_save_private(private, identity_file, passphrase1, comment)) { |
58cfa257 | 1329 | printf("Saving the key failed: %s.\n", identity_file); |
5260325f | 1330 | memset(passphrase1, 0, strlen(passphrase1)); |
1331 | xfree(passphrase1); | |
1332 | exit(1); | |
1333 | } | |
1334 | /* Clear the passphrase. */ | |
1335 | memset(passphrase1, 0, strlen(passphrase1)); | |
1336 | xfree(passphrase1); | |
1337 | ||
1338 | /* Clear the private key and the random number generator. */ | |
fa08c86b | 1339 | key_free(private); |
5260325f | 1340 | arc4random_stir(); |
1341 | ||
1342 | if (!quiet) | |
1343 | printf("Your identification has been saved in %s.\n", identity_file); | |
1344 | ||
5260325f | 1345 | strlcat(identity_file, ".pub", sizeof(identity_file)); |
1c9a907f | 1346 | fd = open(identity_file, O_WRONLY | O_CREAT | O_TRUNC, 0644); |
1347 | if (fd == -1) { | |
5260325f | 1348 | printf("Could not save your public key in %s\n", identity_file); |
1349 | exit(1); | |
1350 | } | |
1c9a907f | 1351 | f = fdopen(fd, "w"); |
1352 | if (f == NULL) { | |
1353 | printf("fdopen %s failed", identity_file); | |
1354 | exit(1); | |
1355 | } | |
a306f2dd | 1356 | if (!key_write(public, f)) |
1357 | fprintf(stderr, "write key failed"); | |
1358 | fprintf(f, " %s\n", comment); | |
5260325f | 1359 | fclose(f); |
1360 | ||
1361 | if (!quiet) { | |
22138a36 | 1362 | char *fp = key_fingerprint(public, SSH_FP_MD5, SSH_FP_HEX); |
a306f2dd | 1363 | printf("Your public key has been saved in %s.\n", |
1364 | identity_file); | |
5260325f | 1365 | printf("The key fingerprint is:\n"); |
22138a36 | 1366 | printf("%s %s\n", fp, comment); |
1367 | xfree(fp); | |
8efc0c15 | 1368 | } |
a306f2dd | 1369 | |
1370 | key_free(public); | |
5260325f | 1371 | exit(0); |
8efc0c15 | 1372 | } |