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a306f2dd | 1 | /* |
2 | * Copyright (c) 2000 Markus Friedl. All rights reserved. | |
3 | * | |
4 | * Redistribution and use in source and binary forms, with or without | |
5 | * modification, are permitted provided that the following conditions | |
6 | * are met: | |
7 | * 1. Redistributions of source code must retain the above copyright | |
8 | * notice, this list of conditions and the following disclaimer. | |
9 | * 2. Redistributions in binary form must reproduce the above copyright | |
10 | * notice, this list of conditions and the following disclaimer in the | |
11 | * documentation and/or other materials provided with the distribution. | |
12 | * 3. All advertising materials mentioning features or use of this software | |
13 | * must display the following acknowledgement: | |
14 | * This product includes software developed by Markus Friedl. | |
15 | * 4. The name of the author may not be used to endorse or promote products | |
16 | * derived from this software without specific prior written permission. | |
17 | * | |
18 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR | |
19 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES | |
20 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. | |
21 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, | |
22 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT | |
23 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | |
24 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |
25 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
26 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF | |
27 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
28 | */ | |
29 | ||
30 | #include "includes.h" | |
2e73a022 | 31 | RCSID("$OpenBSD: sshconnect2.c,v 1.17 2000/08/19 21:34:44 markus Exp $"); |
a306f2dd | 32 | |
33 | #include <openssl/bn.h> | |
34 | #include <openssl/rsa.h> | |
35 | #include <openssl/dsa.h> | |
36 | #include <openssl/md5.h> | |
37 | #include <openssl/dh.h> | |
38 | #include <openssl/hmac.h> | |
39 | ||
40 | #include "ssh.h" | |
41 | #include "xmalloc.h" | |
42 | #include "rsa.h" | |
43 | #include "buffer.h" | |
44 | #include "packet.h" | |
45 | #include "cipher.h" | |
46 | #include "uidswap.h" | |
47 | #include "compat.h" | |
48 | #include "readconf.h" | |
49 | #include "bufaux.h" | |
50 | #include "ssh2.h" | |
51 | #include "kex.h" | |
52 | #include "myproposal.h" | |
53 | #include "key.h" | |
54 | #include "dsa.h" | |
55 | #include "sshconnect.h" | |
56 | #include "authfile.h" | |
2e73a022 | 57 | #include "authfd.h" |
a306f2dd | 58 | |
59 | /* import */ | |
60 | extern char *client_version_string; | |
61 | extern char *server_version_string; | |
62 | extern Options options; | |
63 | ||
64 | /* | |
65 | * SSH2 key exchange | |
66 | */ | |
67 | ||
68 | unsigned char *session_id2 = NULL; | |
69 | int session_id2_len = 0; | |
70 | ||
71 | void | |
71276795 | 72 | ssh_kex_dh(Kex *kex, char *host, struct sockaddr *hostaddr, |
73 | Buffer *client_kexinit, Buffer *server_kexinit) | |
a306f2dd | 74 | { |
71276795 | 75 | int plen, dlen; |
a306f2dd | 76 | unsigned int klen, kout; |
a306f2dd | 77 | char *signature = NULL; |
78 | unsigned int slen; | |
79 | char *server_host_key_blob = NULL; | |
80 | Key *server_host_key; | |
81 | unsigned int sbloblen; | |
82 | DH *dh; | |
83 | BIGNUM *dh_server_pub = 0; | |
84 | BIGNUM *shared_secret = 0; | |
a306f2dd | 85 | unsigned char *kbuf; |
86 | unsigned char *hash; | |
87 | ||
a306f2dd | 88 | debug("Sending SSH2_MSG_KEXDH_INIT."); |
a306f2dd | 89 | /* generate and send 'e', client DH public key */ |
90 | dh = dh_new_group1(); | |
91 | packet_start(SSH2_MSG_KEXDH_INIT); | |
92 | packet_put_bignum2(dh->pub_key); | |
93 | packet_send(); | |
94 | packet_write_wait(); | |
95 | ||
96 | #ifdef DEBUG_KEXDH | |
97 | fprintf(stderr, "\np= "); | |
98 | bignum_print(dh->p); | |
99 | fprintf(stderr, "\ng= "); | |
100 | bignum_print(dh->g); | |
101 | fprintf(stderr, "\npub= "); | |
102 | bignum_print(dh->pub_key); | |
103 | fprintf(stderr, "\n"); | |
104 | DHparams_print_fp(stderr, dh); | |
105 | #endif | |
106 | ||
107 | debug("Wait SSH2_MSG_KEXDH_REPLY."); | |
108 | ||
71276795 | 109 | packet_read_expect(&plen, SSH2_MSG_KEXDH_REPLY); |
a306f2dd | 110 | |
111 | debug("Got SSH2_MSG_KEXDH_REPLY."); | |
112 | ||
113 | /* key, cert */ | |
114 | server_host_key_blob = packet_get_string(&sbloblen); | |
115 | server_host_key = dsa_key_from_blob(server_host_key_blob, sbloblen); | |
116 | if (server_host_key == NULL) | |
117 | fatal("cannot decode server_host_key_blob"); | |
118 | ||
119 | check_host_key(host, hostaddr, server_host_key, | |
120 | options.user_hostfile2, options.system_hostfile2); | |
121 | ||
122 | /* DH paramter f, server public DH key */ | |
123 | dh_server_pub = BN_new(); | |
124 | if (dh_server_pub == NULL) | |
125 | fatal("dh_server_pub == NULL"); | |
126 | packet_get_bignum2(dh_server_pub, &dlen); | |
127 | ||
128 | #ifdef DEBUG_KEXDH | |
129 | fprintf(stderr, "\ndh_server_pub= "); | |
130 | bignum_print(dh_server_pub); | |
131 | fprintf(stderr, "\n"); | |
132 | debug("bits %d", BN_num_bits(dh_server_pub)); | |
133 | #endif | |
134 | ||
135 | /* signed H */ | |
136 | signature = packet_get_string(&slen); | |
137 | packet_done(); | |
138 | ||
139 | if (!dh_pub_is_valid(dh, dh_server_pub)) | |
140 | packet_disconnect("bad server public DH value"); | |
141 | ||
142 | klen = DH_size(dh); | |
143 | kbuf = xmalloc(klen); | |
144 | kout = DH_compute_key(kbuf, dh_server_pub, dh); | |
145 | #ifdef DEBUG_KEXDH | |
146 | debug("shared secret: len %d/%d", klen, kout); | |
147 | fprintf(stderr, "shared secret == "); | |
148 | for (i = 0; i< kout; i++) | |
149 | fprintf(stderr, "%02x", (kbuf[i])&0xff); | |
150 | fprintf(stderr, "\n"); | |
151 | #endif | |
152 | shared_secret = BN_new(); | |
153 | ||
154 | BN_bin2bn(kbuf, kout, shared_secret); | |
155 | memset(kbuf, 0, klen); | |
156 | xfree(kbuf); | |
157 | ||
158 | /* calc and verify H */ | |
159 | hash = kex_hash( | |
160 | client_version_string, | |
161 | server_version_string, | |
162 | buffer_ptr(client_kexinit), buffer_len(client_kexinit), | |
163 | buffer_ptr(server_kexinit), buffer_len(server_kexinit), | |
164 | server_host_key_blob, sbloblen, | |
165 | dh->pub_key, | |
166 | dh_server_pub, | |
167 | shared_secret | |
168 | ); | |
169 | xfree(server_host_key_blob); | |
71276795 | 170 | DH_free(dh); |
a306f2dd | 171 | #ifdef DEBUG_KEXDH |
172 | fprintf(stderr, "hash == "); | |
173 | for (i = 0; i< 20; i++) | |
174 | fprintf(stderr, "%02x", (hash[i])&0xff); | |
175 | fprintf(stderr, "\n"); | |
176 | #endif | |
177 | if (dsa_verify(server_host_key, (unsigned char *)signature, slen, hash, 20) != 1) | |
178 | fatal("dsa_verify failed for server_host_key"); | |
179 | key_free(server_host_key); | |
180 | ||
181 | kex_derive_keys(kex, hash, shared_secret); | |
182 | packet_set_kex(kex); | |
183 | ||
a306f2dd | 184 | /* save session id */ |
185 | session_id2_len = 20; | |
186 | session_id2 = xmalloc(session_id2_len); | |
187 | memcpy(session_id2, hash, session_id2_len); | |
71276795 | 188 | } |
189 | ||
190 | void | |
191 | ssh_kex2(char *host, struct sockaddr *hostaddr) | |
192 | { | |
193 | int i, plen; | |
194 | Kex *kex; | |
195 | Buffer *client_kexinit, *server_kexinit; | |
196 | char *sprop[PROPOSAL_MAX]; | |
197 | ||
198 | if (options.ciphers != NULL) { | |
199 | myproposal[PROPOSAL_ENC_ALGS_CTOS] = | |
200 | myproposal[PROPOSAL_ENC_ALGS_STOC] = options.ciphers; | |
201 | } else if (options.cipher == SSH_CIPHER_3DES) { | |
202 | myproposal[PROPOSAL_ENC_ALGS_CTOS] = | |
203 | myproposal[PROPOSAL_ENC_ALGS_STOC] = | |
204 | (char *) cipher_name(SSH_CIPHER_3DES_CBC); | |
205 | } else if (options.cipher == SSH_CIPHER_BLOWFISH) { | |
206 | myproposal[PROPOSAL_ENC_ALGS_CTOS] = | |
207 | myproposal[PROPOSAL_ENC_ALGS_STOC] = | |
208 | (char *) cipher_name(SSH_CIPHER_BLOWFISH_CBC); | |
209 | } | |
210 | if (options.compression) { | |
211 | myproposal[PROPOSAL_COMP_ALGS_CTOS] = "zlib"; | |
212 | myproposal[PROPOSAL_COMP_ALGS_STOC] = "zlib"; | |
213 | } else { | |
214 | myproposal[PROPOSAL_COMP_ALGS_CTOS] = "none"; | |
215 | myproposal[PROPOSAL_COMP_ALGS_STOC] = "none"; | |
216 | } | |
217 | ||
218 | /* buffers with raw kexinit messages */ | |
219 | server_kexinit = xmalloc(sizeof(*server_kexinit)); | |
220 | buffer_init(server_kexinit); | |
221 | client_kexinit = kex_init(myproposal); | |
222 | ||
223 | /* algorithm negotiation */ | |
224 | kex_exchange_kexinit(client_kexinit, server_kexinit, sprop); | |
225 | kex = kex_choose_conf(myproposal, sprop, 0); | |
226 | for (i = 0; i < PROPOSAL_MAX; i++) | |
227 | xfree(sprop[i]); | |
228 | ||
229 | /* server authentication and session key agreement */ | |
230 | ssh_kex_dh(kex, host, hostaddr, client_kexinit, server_kexinit); | |
231 | ||
232 | buffer_free(client_kexinit); | |
233 | buffer_free(server_kexinit); | |
234 | xfree(client_kexinit); | |
235 | xfree(server_kexinit); | |
a306f2dd | 236 | |
237 | debug("Wait SSH2_MSG_NEWKEYS."); | |
71276795 | 238 | packet_read_expect(&plen, SSH2_MSG_NEWKEYS); |
a306f2dd | 239 | packet_done(); |
240 | debug("GOT SSH2_MSG_NEWKEYS."); | |
241 | ||
242 | debug("send SSH2_MSG_NEWKEYS."); | |
243 | packet_start(SSH2_MSG_NEWKEYS); | |
244 | packet_send(); | |
245 | packet_write_wait(); | |
246 | debug("done: send SSH2_MSG_NEWKEYS."); | |
247 | ||
248 | #ifdef DEBUG_KEXDH | |
249 | /* send 1st encrypted/maced/compressed message */ | |
250 | packet_start(SSH2_MSG_IGNORE); | |
251 | packet_put_cstring("markus"); | |
252 | packet_send(); | |
253 | packet_write_wait(); | |
254 | #endif | |
255 | debug("done: KEX2."); | |
256 | } | |
71276795 | 257 | |
a306f2dd | 258 | /* |
259 | * Authenticate user | |
260 | */ | |
261 | int | |
262 | ssh2_try_passwd(const char *server_user, const char *host, const char *service) | |
263 | { | |
1d1ffb87 | 264 | static int attempt = 0; |
a306f2dd | 265 | char prompt[80]; |
266 | char *password; | |
267 | ||
fa649821 | 268 | if (attempt++ >= options.number_of_password_prompts) |
1d1ffb87 | 269 | return 0; |
270 | ||
fa649821 | 271 | if(attempt != 1) |
272 | error("Permission denied, please try again."); | |
273 | ||
a306f2dd | 274 | snprintf(prompt, sizeof(prompt), "%.30s@%.40s's password: ", |
275 | server_user, host); | |
276 | password = read_passphrase(prompt, 0); | |
277 | packet_start(SSH2_MSG_USERAUTH_REQUEST); | |
278 | packet_put_cstring(server_user); | |
279 | packet_put_cstring(service); | |
280 | packet_put_cstring("password"); | |
281 | packet_put_char(0); | |
282 | packet_put_cstring(password); | |
283 | memset(password, 0, strlen(password)); | |
284 | xfree(password); | |
285 | packet_send(); | |
286 | packet_write_wait(); | |
287 | return 1; | |
288 | } | |
289 | ||
4c8722d9 | 290 | typedef int sign_fn( |
291 | Key *key, | |
292 | unsigned char **sigp, int *lenp, | |
293 | unsigned char *data, int datalen); | |
294 | ||
2e73a022 | 295 | int |
4c8722d9 | 296 | ssh2_sign_and_send_pubkey(Key *k, sign_fn *do_sign, |
a306f2dd | 297 | const char *server_user, const char *host, const char *service) |
298 | { | |
299 | Buffer b; | |
a306f2dd | 300 | unsigned char *blob, *signature; |
301 | int bloblen, slen; | |
74fc9186 | 302 | int skip = 0; |
2e73a022 | 303 | int ret = -1; |
a306f2dd | 304 | |
a306f2dd | 305 | dsa_make_key_blob(k, &blob, &bloblen); |
306 | ||
307 | /* data to be signed */ | |
308 | buffer_init(&b); | |
74fc9186 | 309 | if (datafellows & SSH_COMPAT_SESSIONID_ENCODING) { |
310 | buffer_put_string(&b, session_id2, session_id2_len); | |
311 | skip = buffer_len(&b); | |
312 | } else { | |
313 | buffer_append(&b, session_id2, session_id2_len); | |
314 | skip = session_id2_len; | |
315 | } | |
a306f2dd | 316 | buffer_put_char(&b, SSH2_MSG_USERAUTH_REQUEST); |
317 | buffer_put_cstring(&b, server_user); | |
d0c832f3 | 318 | buffer_put_cstring(&b, |
319 | datafellows & SSH_BUG_PUBKEYAUTH ? | |
320 | "ssh-userauth" : | |
321 | service); | |
a306f2dd | 322 | buffer_put_cstring(&b, "publickey"); |
323 | buffer_put_char(&b, 1); | |
324 | buffer_put_cstring(&b, KEX_DSS); | |
325 | buffer_put_string(&b, blob, bloblen); | |
a306f2dd | 326 | |
327 | /* generate signature */ | |
2e73a022 | 328 | ret = do_sign(k, &signature, &slen, buffer_ptr(&b), buffer_len(&b)); |
329 | if (ret == -1) { | |
330 | xfree(blob); | |
331 | buffer_free(&b); | |
332 | return 0; | |
333 | } | |
a306f2dd | 334 | #ifdef DEBUG_DSS |
335 | buffer_dump(&b); | |
336 | #endif | |
d0c832f3 | 337 | if (datafellows & SSH_BUG_PUBKEYAUTH) { |
d0c832f3 | 338 | buffer_clear(&b); |
339 | buffer_append(&b, session_id2, session_id2_len); | |
340 | buffer_put_char(&b, SSH2_MSG_USERAUTH_REQUEST); | |
341 | buffer_put_cstring(&b, server_user); | |
342 | buffer_put_cstring(&b, service); | |
343 | buffer_put_cstring(&b, "publickey"); | |
344 | buffer_put_char(&b, 1); | |
345 | buffer_put_cstring(&b, KEX_DSS); | |
346 | buffer_put_string(&b, blob, bloblen); | |
347 | } | |
348 | xfree(blob); | |
a306f2dd | 349 | /* append signature */ |
350 | buffer_put_string(&b, signature, slen); | |
351 | xfree(signature); | |
352 | ||
353 | /* skip session id and packet type */ | |
74fc9186 | 354 | if (buffer_len(&b) < skip + 1) |
a306f2dd | 355 | fatal("ssh2_try_pubkey: internal error"); |
74fc9186 | 356 | buffer_consume(&b, skip + 1); |
a306f2dd | 357 | |
358 | /* put remaining data from buffer into packet */ | |
359 | packet_start(SSH2_MSG_USERAUTH_REQUEST); | |
360 | packet_put_raw(buffer_ptr(&b), buffer_len(&b)); | |
361 | buffer_free(&b); | |
362 | ||
363 | /* send */ | |
364 | packet_send(); | |
365 | packet_write_wait(); | |
2e73a022 | 366 | |
367 | return 1; | |
4c8722d9 | 368 | } |
369 | ||
370 | int | |
371 | ssh2_try_pubkey(char *filename, | |
372 | const char *server_user, const char *host, const char *service) | |
373 | { | |
374 | Key *k; | |
2e73a022 | 375 | int ret = 0; |
4c8722d9 | 376 | struct stat st; |
377 | ||
378 | if (stat(filename, &st) != 0) { | |
379 | debug("key does not exist: %s", filename); | |
380 | return 0; | |
381 | } | |
382 | debug("try pubkey: %s", filename); | |
383 | ||
384 | k = key_new(KEY_DSA); | |
385 | if (!load_private_key(filename, "", k, NULL)) { | |
386 | int success = 0; | |
387 | char *passphrase; | |
388 | char prompt[300]; | |
389 | snprintf(prompt, sizeof prompt, | |
390 | "Enter passphrase for DSA key '%.100s': ", | |
391 | filename); | |
392 | passphrase = read_passphrase(prompt, 0); | |
393 | success = load_private_key(filename, passphrase, k, NULL); | |
394 | memset(passphrase, 0, strlen(passphrase)); | |
395 | xfree(passphrase); | |
396 | if (!success) { | |
397 | key_free(k); | |
398 | return 0; | |
399 | } | |
400 | } | |
2e73a022 | 401 | ret = ssh2_sign_and_send_pubkey(k, dsa_sign, server_user, host, service); |
402 | key_free(k); | |
403 | return ret; | |
404 | } | |
405 | ||
406 | int agent_sign( | |
407 | Key *key, | |
408 | unsigned char **sigp, int *lenp, | |
409 | unsigned char *data, int datalen) | |
410 | { | |
411 | int ret = -1; | |
412 | AuthenticationConnection *ac = ssh_get_authentication_connection(); | |
413 | if (ac != NULL) { | |
414 | ret = ssh_agent_sign(ac, key, sigp, lenp, data, datalen); | |
415 | ssh_close_authentication_connection(ac); | |
416 | } | |
417 | return ret; | |
418 | } | |
419 | ||
420 | int | |
421 | ssh2_try_agent(AuthenticationConnection *ac, | |
422 | const char *server_user, const char *host, const char *service) | |
423 | { | |
424 | static int called = 0; | |
425 | char *comment; | |
426 | Key *k; | |
427 | int ret; | |
428 | ||
429 | if (called == 0) { | |
430 | k = ssh_get_first_identity(ac, &comment, 2); | |
431 | called ++; | |
432 | } else { | |
433 | k = ssh_get_next_identity(ac, &comment, 2); | |
434 | } | |
435 | if (k == NULL) | |
436 | return 0; | |
437 | debug("trying DSA agent key %s", comment); | |
438 | xfree(comment); | |
439 | ret = ssh2_sign_and_send_pubkey(k, agent_sign, server_user, host, service); | |
440 | key_free(k); | |
441 | return ret; | |
a306f2dd | 442 | } |
443 | ||
444 | void | |
445 | ssh_userauth2(const char *server_user, char *host) | |
446 | { | |
2e73a022 | 447 | AuthenticationConnection *ac = ssh_get_authentication_connection(); |
a306f2dd | 448 | int type; |
449 | int plen; | |
450 | int sent; | |
451 | unsigned int dlen; | |
452 | int partial; | |
453 | int i = 0; | |
454 | char *auths; | |
455 | char *service = "ssh-connection"; /* service name */ | |
456 | ||
457 | debug("send SSH2_MSG_SERVICE_REQUEST"); | |
458 | packet_start(SSH2_MSG_SERVICE_REQUEST); | |
459 | packet_put_cstring("ssh-userauth"); | |
460 | packet_send(); | |
461 | packet_write_wait(); | |
462 | ||
463 | type = packet_read(&plen); | |
464 | if (type != SSH2_MSG_SERVICE_ACCEPT) { | |
465 | fatal("denied SSH2_MSG_SERVICE_ACCEPT: %d", type); | |
466 | } | |
467 | if (packet_remaining() > 0) { | |
468 | char *reply = packet_get_string(&plen); | |
469 | debug("service_accept: %s", reply); | |
470 | xfree(reply); | |
471 | } else { | |
472 | /* payload empty for ssh-2.0.13 ?? */ | |
f6cde515 | 473 | debug("buggy server: service_accept w/o service"); |
a306f2dd | 474 | } |
475 | packet_done(); | |
476 | debug("got SSH2_MSG_SERVICE_ACCEPT"); | |
477 | ||
478 | /* INITIAL request for auth */ | |
479 | packet_start(SSH2_MSG_USERAUTH_REQUEST); | |
480 | packet_put_cstring(server_user); | |
481 | packet_put_cstring(service); | |
482 | packet_put_cstring("none"); | |
483 | packet_send(); | |
484 | packet_write_wait(); | |
485 | ||
486 | for (;;) { | |
487 | sent = 0; | |
488 | type = packet_read(&plen); | |
489 | if (type == SSH2_MSG_USERAUTH_SUCCESS) | |
490 | break; | |
491 | if (type != SSH2_MSG_USERAUTH_FAILURE) | |
492 | fatal("access denied: %d", type); | |
493 | /* SSH2_MSG_USERAUTH_FAILURE means: try again */ | |
494 | auths = packet_get_string(&dlen); | |
495 | debug("authentications that can continue: %s", auths); | |
496 | partial = packet_get_char(); | |
497 | packet_done(); | |
498 | if (partial) | |
499 | debug("partial success"); | |
1d1ffb87 | 500 | if (options.dsa_authentication && |
a306f2dd | 501 | strstr(auths, "publickey") != NULL) { |
2e73a022 | 502 | if (ac != NULL) |
503 | sent = ssh2_try_agent(ac, | |
a306f2dd | 504 | server_user, host, service); |
2e73a022 | 505 | if (!sent) { |
506 | while (i < options.num_identity_files2) { | |
507 | sent = ssh2_try_pubkey( | |
508 | options.identity_files2[i++], | |
509 | server_user, host, service); | |
510 | if (sent) | |
511 | break; | |
512 | } | |
a306f2dd | 513 | } |
514 | } | |
515 | if (!sent) { | |
516 | if (options.password_authentication && | |
517 | !options.batch_mode && | |
518 | strstr(auths, "password") != NULL) { | |
519 | sent = ssh2_try_passwd(server_user, host, service); | |
520 | } | |
521 | } | |
522 | if (!sent) | |
523 | fatal("Permission denied (%s).", auths); | |
524 | xfree(auths); | |
525 | } | |
2e73a022 | 526 | if (ac != NULL) |
527 | ssh_close_authentication_connection(ac); | |
a306f2dd | 528 | packet_done(); |
529 | debug("ssh-userauth2 successfull"); | |
530 | } |