1 | /* |
2 | * Copyright 1995-2018 The OpenSSL Project Authors. All Rights Reserved. |
3 | * |
4 | * Licensed under the Apache License 2.0 (the "License"). You may not use |
5 | * this file except in compliance with the License. You can obtain a copy |
6 | * in the file LICENSE in the source distribution or at |
7 | * https://www.openssl.org/source/license.html |
8 | */ |
9 | |
10 | #include <stdio.h> |
11 | #include "internal/cryptlib.h" |
12 | #include <openssl/objects.h> |
13 | #include <openssl/x509.h> |
14 | #include "crypto/asn1.h" |
15 | #include "crypto/evp.h" |
16 | |
17 | long PKCS7_ctrl(PKCS7 *p7, int cmd, long larg, char *parg) |
18 | { |
19 | int nid; |
20 | long ret; |
21 | |
22 | nid = OBJ_obj2nid(p7->type); |
23 | |
24 | switch (cmd) { |
25 | /* NOTE(emilia): does not support detached digested data. */ |
26 | case PKCS7_OP_SET_DETACHED_SIGNATURE: |
27 | if (nid == NID_pkcs7_signed) { |
28 | ret = p7->detached = (int)larg; |
29 | if (ret && PKCS7_type_is_data(p7->d.sign->contents)) { |
30 | ASN1_OCTET_STRING *os; |
31 | os = p7->d.sign->contents->d.data; |
32 | ASN1_OCTET_STRING_free(os); |
33 | p7->d.sign->contents->d.data = NULL; |
34 | } |
35 | } else { |
36 | PKCS7err(PKCS7_F_PKCS7_CTRL, |
37 | PKCS7_R_OPERATION_NOT_SUPPORTED_ON_THIS_TYPE); |
38 | ret = 0; |
39 | } |
40 | break; |
41 | case PKCS7_OP_GET_DETACHED_SIGNATURE: |
42 | if (nid == NID_pkcs7_signed) { |
43 | if (p7->d.sign == NULL || p7->d.sign->contents->d.ptr == NULL) |
44 | ret = 1; |
45 | else |
46 | ret = 0; |
47 | |
48 | p7->detached = ret; |
49 | } else { |
50 | PKCS7err(PKCS7_F_PKCS7_CTRL, |
51 | PKCS7_R_OPERATION_NOT_SUPPORTED_ON_THIS_TYPE); |
52 | ret = 0; |
53 | } |
54 | |
55 | break; |
56 | default: |
57 | PKCS7err(PKCS7_F_PKCS7_CTRL, PKCS7_R_UNKNOWN_OPERATION); |
58 | ret = 0; |
59 | } |
60 | return ret; |
61 | } |
62 | |
63 | int PKCS7_content_new(PKCS7 *p7, int type) |
64 | { |
65 | PKCS7 *ret = NULL; |
66 | |
67 | if ((ret = PKCS7_new()) == NULL) |
68 | goto err; |
69 | if (!PKCS7_set_type(ret, type)) |
70 | goto err; |
71 | if (!PKCS7_set_content(p7, ret)) |
72 | goto err; |
73 | |
74 | return 1; |
75 | err: |
76 | PKCS7_free(ret); |
77 | return 0; |
78 | } |
79 | |
80 | int PKCS7_set_content(PKCS7 *p7, PKCS7 *p7_data) |
81 | { |
82 | int i; |
83 | |
84 | i = OBJ_obj2nid(p7->type); |
85 | switch (i) { |
86 | case NID_pkcs7_signed: |
87 | PKCS7_free(p7->d.sign->contents); |
88 | p7->d.sign->contents = p7_data; |
89 | break; |
90 | case NID_pkcs7_digest: |
91 | PKCS7_free(p7->d.digest->contents); |
92 | p7->d.digest->contents = p7_data; |
93 | break; |
94 | case NID_pkcs7_data: |
95 | case NID_pkcs7_enveloped: |
96 | case NID_pkcs7_signedAndEnveloped: |
97 | case NID_pkcs7_encrypted: |
98 | default: |
99 | PKCS7err(PKCS7_F_PKCS7_SET_CONTENT, PKCS7_R_UNSUPPORTED_CONTENT_TYPE); |
100 | goto err; |
101 | } |
102 | return 1; |
103 | err: |
104 | return 0; |
105 | } |
106 | |
107 | int PKCS7_set_type(PKCS7 *p7, int type) |
108 | { |
109 | ASN1_OBJECT *obj; |
110 | |
111 | /* |
112 | * PKCS7_content_free(p7); |
113 | */ |
114 | obj = OBJ_nid2obj(type); /* will not fail */ |
115 | |
116 | switch (type) { |
117 | case NID_pkcs7_signed: |
118 | p7->type = obj; |
119 | if ((p7->d.sign = PKCS7_SIGNED_new()) == NULL) |
120 | goto err; |
121 | if (!ASN1_INTEGER_set(p7->d.sign->version, 1)) { |
122 | PKCS7_SIGNED_free(p7->d.sign); |
123 | p7->d.sign = NULL; |
124 | goto err; |
125 | } |
126 | break; |
127 | case NID_pkcs7_data: |
128 | p7->type = obj; |
129 | if ((p7->d.data = ASN1_OCTET_STRING_new()) == NULL) |
130 | goto err; |
131 | break; |
132 | case NID_pkcs7_signedAndEnveloped: |
133 | p7->type = obj; |
134 | if ((p7->d.signed_and_enveloped = PKCS7_SIGN_ENVELOPE_new()) |
135 | == NULL) |
136 | goto err; |
137 | if (!ASN1_INTEGER_set(p7->d.signed_and_enveloped->version, 1)) |
138 | goto err; |
139 | p7->d.signed_and_enveloped->enc_data->content_type |
140 | = OBJ_nid2obj(NID_pkcs7_data); |
141 | break; |
142 | case NID_pkcs7_enveloped: |
143 | p7->type = obj; |
144 | if ((p7->d.enveloped = PKCS7_ENVELOPE_new()) |
145 | == NULL) |
146 | goto err; |
147 | if (!ASN1_INTEGER_set(p7->d.enveloped->version, 0)) |
148 | goto err; |
149 | p7->d.enveloped->enc_data->content_type = OBJ_nid2obj(NID_pkcs7_data); |
150 | break; |
151 | case NID_pkcs7_encrypted: |
152 | p7->type = obj; |
153 | if ((p7->d.encrypted = PKCS7_ENCRYPT_new()) |
154 | == NULL) |
155 | goto err; |
156 | if (!ASN1_INTEGER_set(p7->d.encrypted->version, 0)) |
157 | goto err; |
158 | p7->d.encrypted->enc_data->content_type = OBJ_nid2obj(NID_pkcs7_data); |
159 | break; |
160 | |
161 | case NID_pkcs7_digest: |
162 | p7->type = obj; |
163 | if ((p7->d.digest = PKCS7_DIGEST_new()) |
164 | == NULL) |
165 | goto err; |
166 | if (!ASN1_INTEGER_set(p7->d.digest->version, 0)) |
167 | goto err; |
168 | break; |
169 | default: |
170 | PKCS7err(PKCS7_F_PKCS7_SET_TYPE, PKCS7_R_UNSUPPORTED_CONTENT_TYPE); |
171 | goto err; |
172 | } |
173 | return 1; |
174 | err: |
175 | return 0; |
176 | } |
177 | |
178 | int PKCS7_set0_type_other(PKCS7 *p7, int type, ASN1_TYPE *other) |
179 | { |
180 | p7->type = OBJ_nid2obj(type); |
181 | p7->d.other = other; |
182 | return 1; |
183 | } |
184 | |
185 | int PKCS7_add_signer(PKCS7 *p7, PKCS7_SIGNER_INFO *psi) |
186 | { |
187 | int i, j, nid; |
188 | X509_ALGOR *alg; |
189 | STACK_OF(PKCS7_SIGNER_INFO) *signer_sk; |
190 | STACK_OF(X509_ALGOR) *md_sk; |
191 | |
192 | i = OBJ_obj2nid(p7->type); |
193 | switch (i) { |
194 | case NID_pkcs7_signed: |
195 | signer_sk = p7->d.sign->signer_info; |
196 | md_sk = p7->d.sign->md_algs; |
197 | break; |
198 | case NID_pkcs7_signedAndEnveloped: |
199 | signer_sk = p7->d.signed_and_enveloped->signer_info; |
200 | md_sk = p7->d.signed_and_enveloped->md_algs; |
201 | break; |
202 | default: |
203 | PKCS7err(PKCS7_F_PKCS7_ADD_SIGNER, PKCS7_R_WRONG_CONTENT_TYPE); |
204 | return 0; |
205 | } |
206 | |
207 | nid = OBJ_obj2nid(psi->digest_alg->algorithm); |
208 | |
209 | /* If the digest is not currently listed, add it */ |
210 | j = 0; |
211 | for (i = 0; i < sk_X509_ALGOR_num(md_sk); i++) { |
212 | alg = sk_X509_ALGOR_value(md_sk, i); |
213 | if (OBJ_obj2nid(alg->algorithm) == nid) { |
214 | j = 1; |
215 | break; |
216 | } |
217 | } |
218 | if (!j) { /* we need to add another algorithm */ |
219 | if ((alg = X509_ALGOR_new()) == NULL |
220 | || (alg->parameter = ASN1_TYPE_new()) == NULL) { |
221 | X509_ALGOR_free(alg); |
222 | PKCS7err(PKCS7_F_PKCS7_ADD_SIGNER, ERR_R_MALLOC_FAILURE); |
223 | return 0; |
224 | } |
225 | alg->algorithm = OBJ_nid2obj(nid); |
226 | alg->parameter->type = V_ASN1_NULL; |
227 | if (!sk_X509_ALGOR_push(md_sk, alg)) { |
228 | X509_ALGOR_free(alg); |
229 | return 0; |
230 | } |
231 | } |
232 | |
233 | if (!sk_PKCS7_SIGNER_INFO_push(signer_sk, psi)) |
234 | return 0; |
235 | return 1; |
236 | } |
237 | |
238 | int PKCS7_add_certificate(PKCS7 *p7, X509 *x509) |
239 | { |
240 | int i; |
241 | STACK_OF(X509) **sk; |
242 | |
243 | i = OBJ_obj2nid(p7->type); |
244 | switch (i) { |
245 | case NID_pkcs7_signed: |
246 | sk = &(p7->d.sign->cert); |
247 | break; |
248 | case NID_pkcs7_signedAndEnveloped: |
249 | sk = &(p7->d.signed_and_enveloped->cert); |
250 | break; |
251 | default: |
252 | PKCS7err(PKCS7_F_PKCS7_ADD_CERTIFICATE, PKCS7_R_WRONG_CONTENT_TYPE); |
253 | return 0; |
254 | } |
255 | |
256 | if (*sk == NULL) |
257 | *sk = sk_X509_new_null(); |
258 | if (*sk == NULL) { |
259 | PKCS7err(PKCS7_F_PKCS7_ADD_CERTIFICATE, ERR_R_MALLOC_FAILURE); |
260 | return 0; |
261 | } |
262 | X509_up_ref(x509); |
263 | if (!sk_X509_push(*sk, x509)) { |
264 | X509_free(x509); |
265 | return 0; |
266 | } |
267 | return 1; |
268 | } |
269 | |
270 | int PKCS7_add_crl(PKCS7 *p7, X509_CRL *crl) |
271 | { |
272 | int i; |
273 | STACK_OF(X509_CRL) **sk; |
274 | |
275 | i = OBJ_obj2nid(p7->type); |
276 | switch (i) { |
277 | case NID_pkcs7_signed: |
278 | sk = &(p7->d.sign->crl); |
279 | break; |
280 | case NID_pkcs7_signedAndEnveloped: |
281 | sk = &(p7->d.signed_and_enveloped->crl); |
282 | break; |
283 | default: |
284 | PKCS7err(PKCS7_F_PKCS7_ADD_CRL, PKCS7_R_WRONG_CONTENT_TYPE); |
285 | return 0; |
286 | } |
287 | |
288 | if (*sk == NULL) |
289 | *sk = sk_X509_CRL_new_null(); |
290 | if (*sk == NULL) { |
291 | PKCS7err(PKCS7_F_PKCS7_ADD_CRL, ERR_R_MALLOC_FAILURE); |
292 | return 0; |
293 | } |
294 | |
295 | X509_CRL_up_ref(crl); |
296 | if (!sk_X509_CRL_push(*sk, crl)) { |
297 | X509_CRL_free(crl); |
298 | return 0; |
299 | } |
300 | return 1; |
301 | } |
302 | |
303 | int PKCS7_SIGNER_INFO_set(PKCS7_SIGNER_INFO *p7i, X509 *x509, EVP_PKEY *pkey, |
304 | const EVP_MD *dgst) |
305 | { |
306 | int ret; |
307 | |
308 | /* We now need to add another PKCS7_SIGNER_INFO entry */ |
309 | if (!ASN1_INTEGER_set(p7i->version, 1)) |
310 | goto err; |
311 | if (!X509_NAME_set(&p7i->issuer_and_serial->issuer, |
312 | X509_get_issuer_name(x509))) |
313 | goto err; |
314 | |
315 | /* |
316 | * because ASN1_INTEGER_set is used to set a 'long' we will do things the |
317 | * ugly way. |
318 | */ |
319 | ASN1_INTEGER_free(p7i->issuer_and_serial->serial); |
320 | if (!(p7i->issuer_and_serial->serial = |
321 | ASN1_INTEGER_dup(X509_get_serialNumber(x509)))) |
322 | goto err; |
323 | |
324 | /* lets keep the pkey around for a while */ |
325 | EVP_PKEY_up_ref(pkey); |
326 | p7i->pkey = pkey; |
327 | |
328 | /* Set the algorithms */ |
329 | |
330 | X509_ALGOR_set0(p7i->digest_alg, OBJ_nid2obj(EVP_MD_type(dgst)), |
331 | V_ASN1_NULL, NULL); |
332 | |
333 | if (pkey->ameth && pkey->ameth->pkey_ctrl) { |
334 | ret = pkey->ameth->pkey_ctrl(pkey, ASN1_PKEY_CTRL_PKCS7_SIGN, 0, p7i); |
335 | if (ret > 0) |
336 | return 1; |
337 | if (ret != -2) { |
338 | PKCS7err(PKCS7_F_PKCS7_SIGNER_INFO_SET, |
339 | PKCS7_R_SIGNING_CTRL_FAILURE); |
340 | return 0; |
341 | } |
342 | } |
343 | PKCS7err(PKCS7_F_PKCS7_SIGNER_INFO_SET, |
344 | PKCS7_R_SIGNING_NOT_SUPPORTED_FOR_THIS_KEY_TYPE); |
345 | err: |
346 | return 0; |
347 | } |
348 | |
349 | PKCS7_SIGNER_INFO *PKCS7_add_signature(PKCS7 *p7, X509 *x509, EVP_PKEY *pkey, |
350 | const EVP_MD *dgst) |
351 | { |
352 | PKCS7_SIGNER_INFO *si = NULL; |
353 | |
354 | if (dgst == NULL) { |
355 | int def_nid; |
356 | if (EVP_PKEY_get_default_digest_nid(pkey, &def_nid) <= 0) |
357 | goto err; |
358 | dgst = EVP_get_digestbynid(def_nid); |
359 | if (dgst == NULL) { |
360 | PKCS7err(PKCS7_F_PKCS7_ADD_SIGNATURE, PKCS7_R_NO_DEFAULT_DIGEST); |
361 | goto err; |
362 | } |
363 | } |
364 | |
365 | if ((si = PKCS7_SIGNER_INFO_new()) == NULL) |
366 | goto err; |
367 | if (!PKCS7_SIGNER_INFO_set(si, x509, pkey, dgst)) |
368 | goto err; |
369 | if (!PKCS7_add_signer(p7, si)) |
370 | goto err; |
371 | return si; |
372 | err: |
373 | PKCS7_SIGNER_INFO_free(si); |
374 | return NULL; |
375 | } |
376 | |
377 | int PKCS7_set_digest(PKCS7 *p7, const EVP_MD *md) |
378 | { |
379 | if (PKCS7_type_is_digest(p7)) { |
380 | if ((p7->d.digest->md->parameter = ASN1_TYPE_new()) == NULL) { |
381 | PKCS7err(PKCS7_F_PKCS7_SET_DIGEST, ERR_R_MALLOC_FAILURE); |
382 | return 0; |
383 | } |
384 | p7->d.digest->md->parameter->type = V_ASN1_NULL; |
385 | p7->d.digest->md->algorithm = OBJ_nid2obj(EVP_MD_nid(md)); |
386 | return 1; |
387 | } |
388 | |
389 | PKCS7err(PKCS7_F_PKCS7_SET_DIGEST, PKCS7_R_WRONG_CONTENT_TYPE); |
390 | return 1; |
391 | } |
392 | |
393 | STACK_OF(PKCS7_SIGNER_INFO) *PKCS7_get_signer_info(PKCS7 *p7) |
394 | { |
395 | if (p7 == NULL || p7->d.ptr == NULL) |
396 | return NULL; |
397 | if (PKCS7_type_is_signed(p7)) { |
398 | return p7->d.sign->signer_info; |
399 | } else if (PKCS7_type_is_signedAndEnveloped(p7)) { |
400 | return p7->d.signed_and_enveloped->signer_info; |
401 | } else |
402 | return NULL; |
403 | } |
404 | |
405 | void PKCS7_SIGNER_INFO_get0_algs(PKCS7_SIGNER_INFO *si, EVP_PKEY **pk, |
406 | X509_ALGOR **pdig, X509_ALGOR **psig) |
407 | { |
408 | if (pk) |
409 | *pk = si->pkey; |
410 | if (pdig) |
411 | *pdig = si->digest_alg; |
412 | if (psig) |
413 | *psig = si->digest_enc_alg; |
414 | } |
415 | |
416 | void PKCS7_RECIP_INFO_get0_alg(PKCS7_RECIP_INFO *ri, X509_ALGOR **penc) |
417 | { |
418 | if (penc) |
419 | *penc = ri->key_enc_algor; |
420 | } |
421 | |
422 | PKCS7_RECIP_INFO *PKCS7_add_recipient(PKCS7 *p7, X509 *x509) |
423 | { |
424 | PKCS7_RECIP_INFO *ri; |
425 | |
426 | if ((ri = PKCS7_RECIP_INFO_new()) == NULL) |
427 | goto err; |
428 | if (!PKCS7_RECIP_INFO_set(ri, x509)) |
429 | goto err; |
430 | if (!PKCS7_add_recipient_info(p7, ri)) |
431 | goto err; |
432 | return ri; |
433 | err: |
434 | PKCS7_RECIP_INFO_free(ri); |
435 | return NULL; |
436 | } |
437 | |
438 | int PKCS7_add_recipient_info(PKCS7 *p7, PKCS7_RECIP_INFO *ri) |
439 | { |
440 | int i; |
441 | STACK_OF(PKCS7_RECIP_INFO) *sk; |
442 | |
443 | i = OBJ_obj2nid(p7->type); |
444 | switch (i) { |
445 | case NID_pkcs7_signedAndEnveloped: |
446 | sk = p7->d.signed_and_enveloped->recipientinfo; |
447 | break; |
448 | case NID_pkcs7_enveloped: |
449 | sk = p7->d.enveloped->recipientinfo; |
450 | break; |
451 | default: |
452 | PKCS7err(PKCS7_F_PKCS7_ADD_RECIPIENT_INFO, |
453 | PKCS7_R_WRONG_CONTENT_TYPE); |
454 | return 0; |
455 | } |
456 | |
457 | if (!sk_PKCS7_RECIP_INFO_push(sk, ri)) |
458 | return 0; |
459 | return 1; |
460 | } |
461 | |
462 | int PKCS7_RECIP_INFO_set(PKCS7_RECIP_INFO *p7i, X509 *x509) |
463 | { |
464 | int ret; |
465 | EVP_PKEY *pkey = NULL; |
466 | if (!ASN1_INTEGER_set(p7i->version, 0)) |
467 | return 0; |
468 | if (!X509_NAME_set(&p7i->issuer_and_serial->issuer, |
469 | X509_get_issuer_name(x509))) |
470 | return 0; |
471 | |
472 | ASN1_INTEGER_free(p7i->issuer_and_serial->serial); |
473 | if (!(p7i->issuer_and_serial->serial = |
474 | ASN1_INTEGER_dup(X509_get_serialNumber(x509)))) |
475 | return 0; |
476 | |
477 | pkey = X509_get0_pubkey(x509); |
478 | |
479 | if (!pkey || !pkey->ameth || !pkey->ameth->pkey_ctrl) { |
480 | PKCS7err(PKCS7_F_PKCS7_RECIP_INFO_SET, |
481 | PKCS7_R_ENCRYPTION_NOT_SUPPORTED_FOR_THIS_KEY_TYPE); |
482 | goto err; |
483 | } |
484 | |
485 | ret = pkey->ameth->pkey_ctrl(pkey, ASN1_PKEY_CTRL_PKCS7_ENCRYPT, 0, p7i); |
486 | if (ret == -2) { |
487 | PKCS7err(PKCS7_F_PKCS7_RECIP_INFO_SET, |
488 | PKCS7_R_ENCRYPTION_NOT_SUPPORTED_FOR_THIS_KEY_TYPE); |
489 | goto err; |
490 | } |
491 | if (ret <= 0) { |
492 | PKCS7err(PKCS7_F_PKCS7_RECIP_INFO_SET, |
493 | PKCS7_R_ENCRYPTION_CTRL_FAILURE); |
494 | goto err; |
495 | } |
496 | |
497 | X509_up_ref(x509); |
498 | p7i->cert = x509; |
499 | |
500 | return 1; |
501 | |
502 | err: |
503 | return 0; |
504 | } |
505 | |
506 | X509 *PKCS7_cert_from_signer_info(PKCS7 *p7, PKCS7_SIGNER_INFO *si) |
507 | { |
508 | if (PKCS7_type_is_signed(p7)) |
509 | return (X509_find_by_issuer_and_serial(p7->d.sign->cert, |
510 | si->issuer_and_serial->issuer, |
511 | si-> |
512 | issuer_and_serial->serial)); |
513 | else |
514 | return NULL; |
515 | } |
516 | |
517 | int PKCS7_set_cipher(PKCS7 *p7, const EVP_CIPHER *cipher) |
518 | { |
519 | int i; |
520 | PKCS7_ENC_CONTENT *ec; |
521 | |
522 | i = OBJ_obj2nid(p7->type); |
523 | switch (i) { |
524 | case NID_pkcs7_signedAndEnveloped: |
525 | ec = p7->d.signed_and_enveloped->enc_data; |
526 | break; |
527 | case NID_pkcs7_enveloped: |
528 | ec = p7->d.enveloped->enc_data; |
529 | break; |
530 | default: |
531 | PKCS7err(PKCS7_F_PKCS7_SET_CIPHER, PKCS7_R_WRONG_CONTENT_TYPE); |
532 | return 0; |
533 | } |
534 | |
535 | /* Check cipher OID exists and has data in it */ |
536 | i = EVP_CIPHER_type(cipher); |
537 | if (i == NID_undef) { |
538 | PKCS7err(PKCS7_F_PKCS7_SET_CIPHER, |
539 | PKCS7_R_CIPHER_HAS_NO_OBJECT_IDENTIFIER); |
540 | return 0; |
541 | } |
542 | |
543 | ec->cipher = cipher; |
544 | return 1; |
545 | } |
546 | |
547 | /* unfortunately cannot constify BIO_new_NDEF() due to this and CMS_stream() */ |
548 | int PKCS7_stream(unsigned char ***boundary, PKCS7 *p7) |
549 | { |
550 | ASN1_OCTET_STRING *os = NULL; |
551 | |
552 | switch (OBJ_obj2nid(p7->type)) { |
553 | case NID_pkcs7_data: |
554 | os = p7->d.data; |
555 | break; |
556 | |
557 | case NID_pkcs7_signedAndEnveloped: |
558 | os = p7->d.signed_and_enveloped->enc_data->enc_data; |
559 | if (os == NULL) { |
560 | os = ASN1_OCTET_STRING_new(); |
561 | p7->d.signed_and_enveloped->enc_data->enc_data = os; |
562 | } |
563 | break; |
564 | |
565 | case NID_pkcs7_enveloped: |
566 | os = p7->d.enveloped->enc_data->enc_data; |
567 | if (os == NULL) { |
568 | os = ASN1_OCTET_STRING_new(); |
569 | p7->d.enveloped->enc_data->enc_data = os; |
570 | } |
571 | break; |
572 | |
573 | case NID_pkcs7_signed: |
574 | os = p7->d.sign->contents->d.data; |
575 | break; |
576 | |
577 | default: |
578 | os = NULL; |
579 | break; |
580 | } |
581 | |
582 | if (os == NULL) |
583 | return 0; |
584 | |
585 | os->flags |= ASN1_STRING_FLAG_NDEF; |
586 | *boundary = &os->data; |
587 | |
588 | return 1; |
589 | } |
590 | |