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Allow IPv6 address entry in tools>ping - Loosens valid character check
[tomato/davidwu.git] / release / src / router / openssl / crypto / pkcs7 / pk7_doit.c
blob77fda3b82a07692ee85158d4f7cfc88b44bd5d10
1 /* crypto/pkcs7/pk7_doit.c */
2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
3 * All rights reserved.
4 *
5 * This package is an SSL implementation written
6 * by Eric Young (eay@cryptsoft.com).
7 * The implementation was written so as to conform with Netscapes SSL.
8 *
9 * This library is free for commercial and non-commercial use as long as
10 * the following conditions are aheared to. The following conditions
11 * apply to all code found in this distribution, be it the RC4, RSA,
12 * lhash, DES, etc., code; not just the SSL code. The SSL documentation
13 * included with this distribution is covered by the same copyright terms
14 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
15 *
16 * Copyright remains Eric Young's, and as such any Copyright notices in
17 * the code are not to be removed.
18 * If this package is used in a product, Eric Young should be given attribution
19 * as the author of the parts of the library used.
20 * This can be in the form of a textual message at program startup or
21 * in documentation (online or textual) provided with the package.
22 *
23 * Redistribution and use in source and binary forms, with or without
24 * modification, are permitted provided that the following conditions
25 * are met:
26 * 1. Redistributions of source code must retain the copyright
27 * notice, this list of conditions and the following disclaimer.
28 * 2. Redistributions in binary form must reproduce the above copyright
29 * notice, this list of conditions and the following disclaimer in the
30 * documentation and/or other materials provided with the distribution.
31 * 3. All advertising materials mentioning features or use of this software
32 * must display the following acknowledgement:
33 * "This product includes cryptographic software written by
34 * Eric Young (eay@cryptsoft.com)"
35 * The word 'cryptographic' can be left out if the rouines from the library
36 * being used are not cryptographic related :-).
37 * 4. If you include any Windows specific code (or a derivative thereof) from
38 * the apps directory (application code) you must include an acknowledgement:
39 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
40 *
41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
44 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
51 * SUCH DAMAGE.
52 *
53 * The licence and distribution terms for any publically available version or
54 * derivative of this code cannot be changed. i.e. this code cannot simply be
55 * copied and put under another distribution licence
56 * [including the GNU Public Licence.]
57 */
58
59 #include <stdio.h>
60 #include "cryptlib.h"
61 #include <openssl/rand.h>
62 #include <openssl/objects.h>
63 #include <openssl/x509.h>
64 #include <openssl/x509v3.h>
65 #include <openssl/err.h>
66
67 static int add_attribute(STACK_OF(X509_ATTRIBUTE) **sk, int nid, int atrtype,
68 void *value);
69 static ASN1_TYPE *get_attribute(STACK_OF(X509_ATTRIBUTE) *sk, int nid);
70
71 static int PKCS7_type_is_other(PKCS7* p7)
72 {
73 int isOther=1;
74
75 int nid=OBJ_obj2nid(p7->type);
76
77 switch( nid )
78 {
79 case NID_pkcs7_data:
80 case NID_pkcs7_signed:
81 case NID_pkcs7_enveloped:
82 case NID_pkcs7_signedAndEnveloped:
83 case NID_pkcs7_digest:
84 case NID_pkcs7_encrypted:
85 isOther=0;
86 break;
87 default:
88 isOther=1;
89 }
90
91 return isOther;
92
93 }
94
95 static ASN1_OCTET_STRING *PKCS7_get_octet_string(PKCS7 *p7)
96 {
97 if ( PKCS7_type_is_data(p7))
98 return p7->d.data;
99 if ( PKCS7_type_is_other(p7) && p7->d.other
100 && (p7->d.other->type == V_ASN1_OCTET_STRING))
101 return p7->d.other->value.octet_string;
102 return NULL;
103 }
104
105 static int PKCS7_bio_add_digest(BIO **pbio, X509_ALGOR *alg)
106 {
107 BIO *btmp;
108 const EVP_MD *md;
109 if ((btmp=BIO_new(BIO_f_md())) == NULL)
110 {
111 PKCS7err(PKCS7_F_PKCS7_BIO_ADD_DIGEST,ERR_R_BIO_LIB);
112 goto err;
113 }
114
115 md=EVP_get_digestbyobj(alg->algorithm);
116 if (md == NULL)
117 {
118 PKCS7err(PKCS7_F_PKCS7_BIO_ADD_DIGEST,PKCS7_R_UNKNOWN_DIGEST_TYPE);
119 goto err;
120 }
121
122 BIO_set_md(btmp,md);
123 if (*pbio == NULL)
124 *pbio=btmp;
125 else if (!BIO_push(*pbio,btmp))
126 {
127 PKCS7err(PKCS7_F_PKCS7_BIO_ADD_DIGEST,ERR_R_BIO_LIB);
128 goto err;
129 }
130 btmp=NULL;
131
132 return 1;
133
134 err:
135 if (btmp)
136 BIO_free(btmp);
137 return 0;
138
139 }
140
141 static int pkcs7_encode_rinfo(PKCS7_RECIP_INFO *ri,
142 unsigned char *key, int keylen)
143 {
144 EVP_PKEY_CTX *pctx = NULL;
145 EVP_PKEY *pkey = NULL;
146 unsigned char *ek = NULL;
147 int ret = 0;
148 size_t eklen;
149
150 pkey = X509_get_pubkey(ri->cert);
151
152 if (!pkey)
153 return 0;
154
155 pctx = EVP_PKEY_CTX_new(pkey, NULL);
156 if (!pctx)
157 return 0;
158
159 if (EVP_PKEY_encrypt_init(pctx) <= 0)
160 goto err;
161
162 if (EVP_PKEY_CTX_ctrl(pctx, -1, EVP_PKEY_OP_ENCRYPT,
163 EVP_PKEY_CTRL_PKCS7_ENCRYPT, 0, ri) <= 0)
164 {
165 PKCS7err(PKCS7_F_PKCS7_ENCODE_RINFO, PKCS7_R_CTRL_ERROR);
166 goto err;
167 }
168
169 if (EVP_PKEY_encrypt(pctx, NULL, &eklen, key, keylen) <= 0)
170 goto err;
171
172 ek = OPENSSL_malloc(eklen);
173
174 if (ek == NULL)
175 {
176 PKCS7err(PKCS7_F_PKCS7_ENCODE_RINFO, ERR_R_MALLOC_FAILURE);
177 goto err;
178 }
179
180 if (EVP_PKEY_encrypt(pctx, ek, &eklen, key, keylen) <= 0)
181 goto err;
182
183 ASN1_STRING_set0(ri->enc_key, ek, eklen);
184 ek = NULL;
185
186 ret = 1;
187
188 err:
189 if (pkey)
190 EVP_PKEY_free(pkey);
191 if (pctx)
192 EVP_PKEY_CTX_free(pctx);
193 if (ek)
194 OPENSSL_free(ek);
195 return ret;
196
197 }
198
199
200 static int pkcs7_decrypt_rinfo(unsigned char **pek, int *peklen,
201 PKCS7_RECIP_INFO *ri, EVP_PKEY *pkey)
202 {
203 EVP_PKEY_CTX *pctx = NULL;
204 unsigned char *ek = NULL;
205 size_t eklen;
206
207 int ret = -1;
208
209 pctx = EVP_PKEY_CTX_new(pkey, NULL);
210 if (!pctx)
211 return -1;
212
213 if (EVP_PKEY_decrypt_init(pctx) <= 0)
214 goto err;
215
216 if (EVP_PKEY_CTX_ctrl(pctx, -1, EVP_PKEY_OP_DECRYPT,
217 EVP_PKEY_CTRL_PKCS7_DECRYPT, 0, ri) <= 0)
218 {
219 PKCS7err(PKCS7_F_PKCS7_DECRYPT_RINFO, PKCS7_R_CTRL_ERROR);
220 goto err;
221 }
222
223 if (EVP_PKEY_decrypt(pctx, NULL, &eklen,
224 ri->enc_key->data, ri->enc_key->length) <= 0)
225 goto err;
226
227 ek = OPENSSL_malloc(eklen);
228
229 if (ek == NULL)
230 {
231 PKCS7err(PKCS7_F_PKCS7_DECRYPT_RINFO, ERR_R_MALLOC_FAILURE);
232 goto err;
233 }
234
235 if (EVP_PKEY_decrypt(pctx, ek, &eklen,
236 ri->enc_key->data, ri->enc_key->length) <= 0)
237 {
238 ret = 0;
239 PKCS7err(PKCS7_F_PKCS7_DECRYPT_RINFO, ERR_R_EVP_LIB);
240 goto err;
241 }
242
243 ret = 1;
244
245 if (*pek)
246 {
247 OPENSSL_cleanse(*pek, *peklen);
248 OPENSSL_free(*pek);
249 }
250
251 *pek = ek;
252 *peklen = eklen;
253
254 err:
255 if (pctx)
256 EVP_PKEY_CTX_free(pctx);
257 if (!ret && ek)
258 OPENSSL_free(ek);
259
260 return ret;
261 }
262
263 BIO *PKCS7_dataInit(PKCS7 *p7, BIO *bio)
264 {
265 int i;
266 BIO *out=NULL,*btmp=NULL;
267 X509_ALGOR *xa = NULL;
268 const EVP_CIPHER *evp_cipher=NULL;
269 STACK_OF(X509_ALGOR) *md_sk=NULL;
270 STACK_OF(PKCS7_RECIP_INFO) *rsk=NULL;
271 X509_ALGOR *xalg=NULL;
272 PKCS7_RECIP_INFO *ri=NULL;
273 ASN1_OCTET_STRING *os=NULL;
274
275 i=OBJ_obj2nid(p7->type);
276 p7->state=PKCS7_S_HEADER;
277
278 switch (i)
279 {
280 case NID_pkcs7_signed:
281 md_sk=p7->d.sign->md_algs;
282 os = PKCS7_get_octet_string(p7->d.sign->contents);
283 break;
284 case NID_pkcs7_signedAndEnveloped:
285 rsk=p7->d.signed_and_enveloped->recipientinfo;
286 md_sk=p7->d.signed_and_enveloped->md_algs;
287 xalg=p7->d.signed_and_enveloped->enc_data->algorithm;
288 evp_cipher=p7->d.signed_and_enveloped->enc_data->cipher;
289 if (evp_cipher == NULL)
290 {
291 PKCS7err(PKCS7_F_PKCS7_DATAINIT,
292 PKCS7_R_CIPHER_NOT_INITIALIZED);
293 goto err;
294 }
295 break;
296 case NID_pkcs7_enveloped:
297 rsk=p7->d.enveloped->recipientinfo;
298 xalg=p7->d.enveloped->enc_data->algorithm;
299 evp_cipher=p7->d.enveloped->enc_data->cipher;
300 if (evp_cipher == NULL)
301 {
302 PKCS7err(PKCS7_F_PKCS7_DATAINIT,
303 PKCS7_R_CIPHER_NOT_INITIALIZED);
304 goto err;
305 }
306 break;
307 case NID_pkcs7_digest:
308 xa = p7->d.digest->md;
309 os = PKCS7_get_octet_string(p7->d.digest->contents);
310 break;
311 case NID_pkcs7_data:
312 break;
313 default:
314 PKCS7err(PKCS7_F_PKCS7_DATAINIT,PKCS7_R_UNSUPPORTED_CONTENT_TYPE);
315 goto err;
316 }
317
318 for (i=0; i<sk_X509_ALGOR_num(md_sk); i++)
319 if (!PKCS7_bio_add_digest(&out, sk_X509_ALGOR_value(md_sk, i)))
320 goto err;
321
322 if (xa && !PKCS7_bio_add_digest(&out, xa))
323 goto err;
324
325 if (evp_cipher != NULL)
326 {
327 unsigned char key[EVP_MAX_KEY_LENGTH];
328 unsigned char iv[EVP_MAX_IV_LENGTH];
329 int keylen,ivlen;
330 EVP_CIPHER_CTX *ctx;
331
332 if ((btmp=BIO_new(BIO_f_cipher())) == NULL)
333 {
334 PKCS7err(PKCS7_F_PKCS7_DATAINIT,ERR_R_BIO_LIB);
335 goto err;
336 }
337 BIO_get_cipher_ctx(btmp, &ctx);
338 keylen=EVP_CIPHER_key_length(evp_cipher);
339 ivlen=EVP_CIPHER_iv_length(evp_cipher);
340 xalg->algorithm = OBJ_nid2obj(EVP_CIPHER_type(evp_cipher));
341 if (ivlen > 0)
342 if (RAND_pseudo_bytes(iv,ivlen) <= 0)
343 goto err;
344 if (EVP_CipherInit_ex(ctx, evp_cipher, NULL, NULL, NULL, 1)<=0)
345 goto err;
346 if (EVP_CIPHER_CTX_rand_key(ctx, key) <= 0)
347 goto err;
348 if (EVP_CipherInit_ex(ctx, NULL, NULL, key, iv, 1) <= 0)
349 goto err;
350
351 if (ivlen > 0) {
352 if (xalg->parameter == NULL) {
353 xalg->parameter = ASN1_TYPE_new();
354 if (xalg->parameter == NULL)
355 goto err;
356 }
357 if(EVP_CIPHER_param_to_asn1(ctx, xalg->parameter) < 0)
358 goto err;
359 }
360
361 /* Lets do the pub key stuff :-) */
362 for (i=0; i<sk_PKCS7_RECIP_INFO_num(rsk); i++)
363 {
364 ri=sk_PKCS7_RECIP_INFO_value(rsk,i);
365 if (pkcs7_encode_rinfo(ri, key, keylen) <= 0)
366 goto err;
367 }
368 OPENSSL_cleanse(key, keylen);
369
370 if (out == NULL)
371 out=btmp;
372 else
373 BIO_push(out,btmp);
374 btmp=NULL;
375 }
376
377 if (bio == NULL)
378 {
379 if (PKCS7_is_detached(p7))
380 bio=BIO_new(BIO_s_null());
381 else if (os && os->length > 0)
382 bio = BIO_new_mem_buf(os->data, os->length);
383 if(bio == NULL)
384 {
385 bio=BIO_new(BIO_s_mem());
386 if (bio == NULL)
387 goto err;
388 BIO_set_mem_eof_return(bio,0);
389 }
390 }
391 if (out)
392 BIO_push(out,bio);
393 else
394 out = bio;
395 bio=NULL;
396 if (0)
397 {
398 err:
399 if (out != NULL)
400 BIO_free_all(out);
401 if (btmp != NULL)
402 BIO_free_all(btmp);
403 out=NULL;
404 }
405 return(out);
406 }
407
408 static int pkcs7_cmp_ri(PKCS7_RECIP_INFO *ri, X509 *pcert)
409 {
410 int ret;
411 ret = X509_NAME_cmp(ri->issuer_and_serial->issuer,
412 pcert->cert_info->issuer);
413 if (ret)
414 return ret;
415 return M_ASN1_INTEGER_cmp(pcert->cert_info->serialNumber,
416 ri->issuer_and_serial->serial);
417 }
418
419 /* int */
420 BIO *PKCS7_dataDecode(PKCS7 *p7, EVP_PKEY *pkey, BIO *in_bio, X509 *pcert)
421 {
422 int i,j;
423 BIO *out=NULL,*btmp=NULL,*etmp=NULL,*bio=NULL;
424 X509_ALGOR *xa;
425 ASN1_OCTET_STRING *data_body=NULL;
426 const EVP_MD *evp_md;
427 const EVP_CIPHER *evp_cipher=NULL;
428 EVP_CIPHER_CTX *evp_ctx=NULL;
429 X509_ALGOR *enc_alg=NULL;
430 STACK_OF(X509_ALGOR) *md_sk=NULL;
431 STACK_OF(PKCS7_RECIP_INFO) *rsk=NULL;
432 PKCS7_RECIP_INFO *ri=NULL;
433 unsigned char *ek = NULL, *tkey = NULL;
434 int eklen = 0, tkeylen = 0;
435
436 i=OBJ_obj2nid(p7->type);
437 p7->state=PKCS7_S_HEADER;
438
439 switch (i)
440 {
441 case NID_pkcs7_signed:
442 data_body=PKCS7_get_octet_string(p7->d.sign->contents);
443 md_sk=p7->d.sign->md_algs;
444 break;
445 case NID_pkcs7_signedAndEnveloped:
446 rsk=p7->d.signed_and_enveloped->recipientinfo;
447 md_sk=p7->d.signed_and_enveloped->md_algs;
448 data_body=p7->d.signed_and_enveloped->enc_data->enc_data;
449 enc_alg=p7->d.signed_and_enveloped->enc_data->algorithm;
450 evp_cipher=EVP_get_cipherbyobj(enc_alg->algorithm);
451 if (evp_cipher == NULL)
452 {
453 PKCS7err(PKCS7_F_PKCS7_DATADECODE,PKCS7_R_UNSUPPORTED_CIPHER_TYPE);
454 goto err;
455 }
456 break;
457 case NID_pkcs7_enveloped:
458 rsk=p7->d.enveloped->recipientinfo;
459 enc_alg=p7->d.enveloped->enc_data->algorithm;
460 data_body=p7->d.enveloped->enc_data->enc_data;
461 evp_cipher=EVP_get_cipherbyobj(enc_alg->algorithm);
462 if (evp_cipher == NULL)
463 {
464 PKCS7err(PKCS7_F_PKCS7_DATADECODE,PKCS7_R_UNSUPPORTED_CIPHER_TYPE);
465 goto err;
466 }
467 break;
468 default:
469 PKCS7err(PKCS7_F_PKCS7_DATADECODE,PKCS7_R_UNSUPPORTED_CONTENT_TYPE);
470 goto err;
471 }
472
473 /* We will be checking the signature */
474 if (md_sk != NULL)
475 {
476 for (i=0; i<sk_X509_ALGOR_num(md_sk); i++)
477 {
478 xa=sk_X509_ALGOR_value(md_sk,i);
479 if ((btmp=BIO_new(BIO_f_md())) == NULL)
480 {
481 PKCS7err(PKCS7_F_PKCS7_DATADECODE,ERR_R_BIO_LIB);
482 goto err;
483 }
484
485 j=OBJ_obj2nid(xa->algorithm);
486 evp_md=EVP_get_digestbynid(j);
487 if (evp_md == NULL)
488 {
489 PKCS7err(PKCS7_F_PKCS7_DATADECODE,PKCS7_R_UNKNOWN_DIGEST_TYPE);
490 goto err;
491 }
492
493 BIO_set_md(btmp,evp_md);
494 if (out == NULL)
495 out=btmp;
496 else
497 BIO_push(out,btmp);
498 btmp=NULL;
499 }
500 }
501
502 if (evp_cipher != NULL)
503 {
504 #if 0
505 unsigned char key[EVP_MAX_KEY_LENGTH];
506 unsigned char iv[EVP_MAX_IV_LENGTH];
507 unsigned char *p;
508 int keylen,ivlen;
509 int max;
510 X509_OBJECT ret;
511 #endif
512
513 if ((etmp=BIO_new(BIO_f_cipher())) == NULL)
514 {
515 PKCS7err(PKCS7_F_PKCS7_DATADECODE,ERR_R_BIO_LIB);
516 goto err;
517 }
518
519 /* It was encrypted, we need to decrypt the secret key
520 * with the private key */
521
522 /* Find the recipientInfo which matches the passed certificate
523 * (if any)
524 */
525
526 if (pcert)
527 {
528 for (i=0; i<sk_PKCS7_RECIP_INFO_num(rsk); i++)
529 {
530 ri=sk_PKCS7_RECIP_INFO_value(rsk,i);
531 if (!pkcs7_cmp_ri(ri, pcert))
532 break;
533 ri=NULL;
534 }
535 if (ri == NULL)
536 {
537 PKCS7err(PKCS7_F_PKCS7_DATADECODE,
538 PKCS7_R_NO_RECIPIENT_MATCHES_CERTIFICATE);
539 goto err;
540 }
541 }
542
543 /* If we haven't got a certificate try each ri in turn */
544 if (pcert == NULL)
545 {
546 /* Always attempt to decrypt all rinfo even
547 * after sucess as a defence against MMA timing
548 * attacks.
549 */
550 for (i=0; i<sk_PKCS7_RECIP_INFO_num(rsk); i++)
551 {
552 ri=sk_PKCS7_RECIP_INFO_value(rsk,i);
553
554 if (pkcs7_decrypt_rinfo(&ek, &eklen,
555 ri, pkey) < 0)
556 goto err;
557 ERR_clear_error();
558 }
559 }
560 else
561 {
562 /* Only exit on fatal errors, not decrypt failure */
563 if (pkcs7_decrypt_rinfo(&ek, &eklen, ri, pkey) < 0)
564 goto err;
565 ERR_clear_error();
566 }
567
568 evp_ctx=NULL;
569 BIO_get_cipher_ctx(etmp,&evp_ctx);
570 if (EVP_CipherInit_ex(evp_ctx,evp_cipher,NULL,NULL,NULL,0) <= 0)
571 goto err;
572 if (EVP_CIPHER_asn1_to_param(evp_ctx,enc_alg->parameter) < 0)
573 goto err;
574 /* Generate random key as MMA defence */
575 tkeylen = EVP_CIPHER_CTX_key_length(evp_ctx);
576 tkey = OPENSSL_malloc(tkeylen);
577 if (!tkey)
578 goto err;
579 if (EVP_CIPHER_CTX_rand_key(evp_ctx, tkey) <= 0)
580 goto err;
581 if (ek == NULL)
582 {
583 ek = tkey;
584 eklen = tkeylen;
585 tkey = NULL;
586 }
587
588 if (eklen != EVP_CIPHER_CTX_key_length(evp_ctx)) {
589 /* Some S/MIME clients don't use the same key
590 * and effective key length. The key length is
591 * determined by the size of the decrypted RSA key.
592 */
593 if(!EVP_CIPHER_CTX_set_key_length(evp_ctx, eklen))
594 {
595 /* Use random key as MMA defence */
596 OPENSSL_cleanse(ek, eklen);
597 OPENSSL_free(ek);
598 ek = tkey;
599 eklen = tkeylen;
600 tkey = NULL;
601 }
602 }
603 /* Clear errors so we don't leak information useful in MMA */
604 ERR_clear_error();
605 if (EVP_CipherInit_ex(evp_ctx,NULL,NULL,ek,NULL,0) <= 0)
606 goto err;
607
608 if (ek)
609 {
610 OPENSSL_cleanse(ek,eklen);
611 OPENSSL_free(ek);
612 ek = NULL;
613 }
614 if (tkey)
615 {
616 OPENSSL_cleanse(tkey,tkeylen);
617 OPENSSL_free(tkey);
618 tkey = NULL;
619 }
620
621 if (out == NULL)
622 out=etmp;
623 else
624 BIO_push(out,etmp);
625 etmp=NULL;
626 }
627
628 #if 1
629 if (PKCS7_is_detached(p7) || (in_bio != NULL))
630 {
631 bio=in_bio;
632 }
633 else
634 {
635 #if 0
636 bio=BIO_new(BIO_s_mem());
637 /* We need to set this so that when we have read all
638 * the data, the encrypt BIO, if present, will read
639 * EOF and encode the last few bytes */
640 BIO_set_mem_eof_return(bio,0);
641
642 if (data_body->length > 0)
643 BIO_write(bio,(char *)data_body->data,data_body->length);
644 #else
645 if (data_body->length > 0)
646 bio = BIO_new_mem_buf(data_body->data,data_body->length);
647 else {
648 bio=BIO_new(BIO_s_mem());
649 BIO_set_mem_eof_return(bio,0);
650 }
651 if (bio == NULL)
652 goto err;
653 #endif
654 }
655 BIO_push(out,bio);
656 bio=NULL;
657 #endif
658 if (0)
659 {
660 err:
661 if (ek)
662 {
663 OPENSSL_cleanse(ek,eklen);
664 OPENSSL_free(ek);
665 }
666 if (tkey)
667 {
668 OPENSSL_cleanse(tkey,tkeylen);
669 OPENSSL_free(tkey);
670 }
671 if (out != NULL) BIO_free_all(out);
672 if (btmp != NULL) BIO_free_all(btmp);
673 if (etmp != NULL) BIO_free_all(etmp);
674 if (bio != NULL) BIO_free_all(bio);
675 out=NULL;
676 }
677 return(out);
678 }
679
680 static BIO *PKCS7_find_digest(EVP_MD_CTX **pmd, BIO *bio, int nid)
681 {
682 for (;;)
683 {
684 bio=BIO_find_type(bio,BIO_TYPE_MD);
685 if (bio == NULL)
686 {
687 PKCS7err(PKCS7_F_PKCS7_FIND_DIGEST,PKCS7_R_UNABLE_TO_FIND_MESSAGE_DIGEST);
688 return NULL;
689 }
690 BIO_get_md_ctx(bio,pmd);
691 if (*pmd == NULL)
692 {
693 PKCS7err(PKCS7_F_PKCS7_FIND_DIGEST,ERR_R_INTERNAL_ERROR);
694 return NULL;
695 }
696 if (EVP_MD_CTX_type(*pmd) == nid)
697 return bio;
698 bio=BIO_next(bio);
699 }
700 return NULL;
701 }
702
703 static int do_pkcs7_signed_attrib(PKCS7_SIGNER_INFO *si, EVP_MD_CTX *mctx)
704 {
705 unsigned char md_data[EVP_MAX_MD_SIZE];
706 unsigned int md_len;
707
708 /* Add signing time if not already present */
709 if (!PKCS7_get_signed_attribute(si, NID_pkcs9_signingTime))
710 {
711 if (!PKCS7_add0_attrib_signing_time(si, NULL))
712 {
713 PKCS7err(PKCS7_F_DO_PKCS7_SIGNED_ATTRIB,
714 ERR_R_MALLOC_FAILURE);
715 return 0;
716 }
717 }
718
719 /* Add digest */
720 if (!EVP_DigestFinal_ex(mctx, md_data,&md_len))
721 {
722 PKCS7err(PKCS7_F_DO_PKCS7_SIGNED_ATTRIB, ERR_R_EVP_LIB);
723 return 0;
724 }
725 if (!PKCS7_add1_attrib_digest(si, md_data, md_len))
726 {
727 PKCS7err(PKCS7_F_DO_PKCS7_SIGNED_ATTRIB, ERR_R_MALLOC_FAILURE);
728 return 0;
729 }
730
731 /* Now sign the attributes */
732 if (!PKCS7_SIGNER_INFO_sign(si))
733 return 0;
734
735 return 1;
736 }
737
738
739 int PKCS7_dataFinal(PKCS7 *p7, BIO *bio)
740 {
741 int ret=0;
742 int i,j;
743 BIO *btmp;
744 PKCS7_SIGNER_INFO *si;
745 EVP_MD_CTX *mdc,ctx_tmp;
746 STACK_OF(X509_ATTRIBUTE) *sk;
747 STACK_OF(PKCS7_SIGNER_INFO) *si_sk=NULL;
748 ASN1_OCTET_STRING *os=NULL;
749
750 EVP_MD_CTX_init(&ctx_tmp);
751 i=OBJ_obj2nid(p7->type);
752 p7->state=PKCS7_S_HEADER;
753
754 switch (i)
755 {
756 case NID_pkcs7_data:
757 os = p7->d.data;
758 break;
759 case NID_pkcs7_signedAndEnveloped:
760 /* XXXXXXXXXXXXXXXX */
761 si_sk=p7->d.signed_and_enveloped->signer_info;
762 os = p7->d.signed_and_enveloped->enc_data->enc_data;
763 if (!os)
764 {
765 os=M_ASN1_OCTET_STRING_new();
766 if (!os)
767 {
768 PKCS7err(PKCS7_F_PKCS7_DATAFINAL,ERR_R_MALLOC_FAILURE);
769 goto err;
770 }
771 p7->d.signed_and_enveloped->enc_data->enc_data=os;
772 }
773 break;
774 case NID_pkcs7_enveloped:
775 /* XXXXXXXXXXXXXXXX */
776 os = p7->d.enveloped->enc_data->enc_data;
777 if (!os)
778 {
779 os=M_ASN1_OCTET_STRING_new();
780 if (!os)
781 {
782 PKCS7err(PKCS7_F_PKCS7_DATAFINAL,ERR_R_MALLOC_FAILURE);
783 goto err;
784 }
785 p7->d.enveloped->enc_data->enc_data=os;
786 }
787 break;
788 case NID_pkcs7_signed:
789 si_sk=p7->d.sign->signer_info;
790 os=PKCS7_get_octet_string(p7->d.sign->contents);
791 /* If detached data then the content is excluded */
792 if(PKCS7_type_is_data(p7->d.sign->contents) && p7->detached) {
793 M_ASN1_OCTET_STRING_free(os);
794 p7->d.sign->contents->d.data = NULL;
795 }
796 break;
797
798 case NID_pkcs7_digest:
799 os=PKCS7_get_octet_string(p7->d.digest->contents);
800 /* If detached data then the content is excluded */
801 if(PKCS7_type_is_data(p7->d.digest->contents) && p7->detached)
802 {
803 M_ASN1_OCTET_STRING_free(os);
804 p7->d.digest->contents->d.data = NULL;
805 }
806 break;
807
808 default:
809 PKCS7err(PKCS7_F_PKCS7_DATAFINAL,PKCS7_R_UNSUPPORTED_CONTENT_TYPE);
810 goto err;
811 }
812
813 if (si_sk != NULL)
814 {
815 for (i=0; i<sk_PKCS7_SIGNER_INFO_num(si_sk); i++)
816 {
817 si=sk_PKCS7_SIGNER_INFO_value(si_sk,i);
818 if (si->pkey == NULL)
819 continue;
820
821 j = OBJ_obj2nid(si->digest_alg->algorithm);
822
823 btmp=bio;
824
825 btmp = PKCS7_find_digest(&mdc, btmp, j);
826
827 if (btmp == NULL)
828 goto err;
829
830 /* We now have the EVP_MD_CTX, lets do the
831 * signing. */
832 if (!EVP_MD_CTX_copy_ex(&ctx_tmp,mdc))
833 goto err;
834
835 sk=si->auth_attr;
836
837 /* If there are attributes, we add the digest
838 * attribute and only sign the attributes */
839 if (sk_X509_ATTRIBUTE_num(sk) > 0)
840 {
841 if (!do_pkcs7_signed_attrib(si, &ctx_tmp))
842 goto err;
843 }
844 else
845 {
846 unsigned char *abuf = NULL;
847 unsigned int abuflen;
848 abuflen = EVP_PKEY_size(si->pkey);
849 abuf = OPENSSL_malloc(abuflen);
850 if (!abuf)
851 goto err;
852
853 if (!EVP_SignFinal(&ctx_tmp, abuf, &abuflen,
854 si->pkey))
855 {
856 PKCS7err(PKCS7_F_PKCS7_DATAFINAL,
857 ERR_R_EVP_LIB);
858 goto err;
859 }
860 ASN1_STRING_set0(si->enc_digest, abuf, abuflen);
861 }
862 }
863 }
864 else if (i == NID_pkcs7_digest)
865 {
866 unsigned char md_data[EVP_MAX_MD_SIZE];
867 unsigned int md_len;
868 if (!PKCS7_find_digest(&mdc, bio,
869 OBJ_obj2nid(p7->d.digest->md->algorithm)))
870 goto err;
871 if (!EVP_DigestFinal_ex(mdc,md_data,&md_len))
872 goto err;
873 M_ASN1_OCTET_STRING_set(p7->d.digest->digest, md_data, md_len);
874 }
875
876 if (!PKCS7_is_detached(p7) && !(os->flags & ASN1_STRING_FLAG_NDEF))
877 {
878 char *cont;
879 long contlen;
880 btmp=BIO_find_type(bio,BIO_TYPE_MEM);
881 if (btmp == NULL)
882 {
883 PKCS7err(PKCS7_F_PKCS7_DATAFINAL,PKCS7_R_UNABLE_TO_FIND_MEM_BIO);
884 goto err;
885 }
886 contlen = BIO_get_mem_data(btmp, &cont);
887 /* Mark the BIO read only then we can use its copy of the data
888 * instead of making an extra copy.
889 */
890 BIO_set_flags(btmp, BIO_FLAGS_MEM_RDONLY);
891 BIO_set_mem_eof_return(btmp, 0);
892 ASN1_STRING_set0(os, (unsigned char *)cont, contlen);
893 }
894 ret=1;
895 err:
896 EVP_MD_CTX_cleanup(&ctx_tmp);
897 return(ret);
898 }
899
900 int PKCS7_SIGNER_INFO_sign(PKCS7_SIGNER_INFO *si)
901 {
902 EVP_MD_CTX mctx;
903 EVP_PKEY_CTX *pctx;
904 unsigned char *abuf = NULL;
905 int alen;
906 size_t siglen;
907 const EVP_MD *md = NULL;
908
909 md = EVP_get_digestbyobj(si->digest_alg->algorithm);
910 if (md == NULL)
911 return 0;
912
913 EVP_MD_CTX_init(&mctx);
914 if (EVP_DigestSignInit(&mctx, &pctx, md,NULL, si->pkey) <= 0)
915 goto err;
916
917 if (EVP_PKEY_CTX_ctrl(pctx, -1, EVP_PKEY_OP_SIGN,
918 EVP_PKEY_CTRL_PKCS7_SIGN, 0, si) <= 0)
919 {
920 PKCS7err(PKCS7_F_PKCS7_SIGNER_INFO_SIGN, PKCS7_R_CTRL_ERROR);
921 goto err;
922 }
923
924 alen = ASN1_item_i2d((ASN1_VALUE *)si->auth_attr,&abuf,
925 ASN1_ITEM_rptr(PKCS7_ATTR_SIGN));
926 if(!abuf)
927 goto err;
928 if (EVP_DigestSignUpdate(&mctx,abuf,alen) <= 0)
929 goto err;
930 OPENSSL_free(abuf);
931 if (EVP_DigestSignFinal(&mctx, NULL, &siglen) <= 0)
932 goto err;
933 abuf = OPENSSL_malloc(siglen);
934 if(!abuf)
935 goto err;
936 if (EVP_DigestSignFinal(&mctx, abuf, &siglen) <= 0)
937 goto err;
938
939 if (EVP_PKEY_CTX_ctrl(pctx, -1, EVP_PKEY_OP_SIGN,
940 EVP_PKEY_CTRL_PKCS7_SIGN, 1, si) <= 0)
941 {
942 PKCS7err(PKCS7_F_PKCS7_SIGNER_INFO_SIGN, PKCS7_R_CTRL_ERROR);
943 goto err;
944 }
945
946 EVP_MD_CTX_cleanup(&mctx);
947
948 ASN1_STRING_set0(si->enc_digest, abuf, siglen);
949
950 return 1;
951
952 err:
953 if (abuf)
954 OPENSSL_free(abuf);
955 EVP_MD_CTX_cleanup(&mctx);
956 return 0;
957
958 }
959
960 int PKCS7_dataVerify(X509_STORE *cert_store, X509_STORE_CTX *ctx, BIO *bio,
961 PKCS7 *p7, PKCS7_SIGNER_INFO *si)
962 {
963 PKCS7_ISSUER_AND_SERIAL *ias;
964 int ret=0,i;
965 STACK_OF(X509) *cert;
966 X509 *x509;
967
968 if (PKCS7_type_is_signed(p7))
969 {
970 cert=p7->d.sign->cert;
971 }
972 else if (PKCS7_type_is_signedAndEnveloped(p7))
973 {
974 cert=p7->d.signed_and_enveloped->cert;
975 }
976 else
977 {
978 PKCS7err(PKCS7_F_PKCS7_DATAVERIFY,PKCS7_R_WRONG_PKCS7_TYPE);
979 goto err;
980 }
981 /* XXXXXXXXXXXXXXXXXXXXXXX */
982 ias=si->issuer_and_serial;
983
984 x509=X509_find_by_issuer_and_serial(cert,ias->issuer,ias->serial);
985
986 /* were we able to find the cert in passed to us */
987 if (x509 == NULL)
988 {
989 PKCS7err(PKCS7_F_PKCS7_DATAVERIFY,PKCS7_R_UNABLE_TO_FIND_CERTIFICATE);
990 goto err;
991 }
992
993 /* Lets verify */
994 if(!X509_STORE_CTX_init(ctx,cert_store,x509,cert))
995 {
996 PKCS7err(PKCS7_F_PKCS7_DATAVERIFY,ERR_R_X509_LIB);
997 goto err;
998 }
999 X509_STORE_CTX_set_purpose(ctx, X509_PURPOSE_SMIME_SIGN);
1000 i=X509_verify_cert(ctx);
1001 if (i <= 0)
1002 {
1003 PKCS7err(PKCS7_F_PKCS7_DATAVERIFY,ERR_R_X509_LIB);
1004 X509_STORE_CTX_cleanup(ctx);
1005 goto err;
1006 }
1007 X509_STORE_CTX_cleanup(ctx);
1008
1009 return PKCS7_signatureVerify(bio, p7, si, x509);
1010 err:
1011 return ret;
1012 }
1013
1014 int PKCS7_signatureVerify(BIO *bio, PKCS7 *p7, PKCS7_SIGNER_INFO *si,
1015 X509 *x509)
1016 {
1017 ASN1_OCTET_STRING *os;
1018 EVP_MD_CTX mdc_tmp,*mdc;
1019 int ret=0,i;
1020 int md_type;
1021 STACK_OF(X509_ATTRIBUTE) *sk;
1022 BIO *btmp;
1023 EVP_PKEY *pkey;
1024
1025 EVP_MD_CTX_init(&mdc_tmp);
1026
1027 if (!PKCS7_type_is_signed(p7) &&
1028 !PKCS7_type_is_signedAndEnveloped(p7)) {
1029 PKCS7err(PKCS7_F_PKCS7_SIGNATUREVERIFY,
1030 PKCS7_R_WRONG_PKCS7_TYPE);
1031 goto err;
1032 }
1033
1034 md_type=OBJ_obj2nid(si->digest_alg->algorithm);
1035
1036 btmp=bio;
1037 for (;;)
1038 {
1039 if ((btmp == NULL) ||
1040 ((btmp=BIO_find_type(btmp,BIO_TYPE_MD)) == NULL))
1041 {
1042 PKCS7err(PKCS7_F_PKCS7_SIGNATUREVERIFY,
1043 PKCS7_R_UNABLE_TO_FIND_MESSAGE_DIGEST);
1044 goto err;
1045 }
1046 BIO_get_md_ctx(btmp,&mdc);
1047 if (mdc == NULL)
1048 {
1049 PKCS7err(PKCS7_F_PKCS7_SIGNATUREVERIFY,
1050 ERR_R_INTERNAL_ERROR);
1051 goto err;
1052 }
1053 if (EVP_MD_CTX_type(mdc) == md_type)
1054 break;
1055 /* Workaround for some broken clients that put the signature
1056 * OID instead of the digest OID in digest_alg->algorithm
1057 */
1058 if (EVP_MD_pkey_type(EVP_MD_CTX_md(mdc)) == md_type)
1059 break;
1060 btmp=BIO_next(btmp);
1061 }
1062
1063 /* mdc is the digest ctx that we want, unless there are attributes,
1064 * in which case the digest is the signed attributes */
1065 if (!EVP_MD_CTX_copy_ex(&mdc_tmp,mdc))
1066 goto err;
1067
1068 sk=si->auth_attr;
1069 if ((sk != NULL) && (sk_X509_ATTRIBUTE_num(sk) != 0))
1070 {
1071 unsigned char md_dat[EVP_MAX_MD_SIZE], *abuf = NULL;
1072 unsigned int md_len;
1073 int alen;
1074 ASN1_OCTET_STRING *message_digest;
1075
1076 if (!EVP_DigestFinal_ex(&mdc_tmp,md_dat,&md_len))
1077 goto err;
1078 message_digest=PKCS7_digest_from_attributes(sk);
1079 if (!message_digest)
1080 {
1081 PKCS7err(PKCS7_F_PKCS7_SIGNATUREVERIFY,
1082 PKCS7_R_UNABLE_TO_FIND_MESSAGE_DIGEST);
1083 goto err;
1084 }
1085 if ((message_digest->length != (int)md_len) ||
1086 (memcmp(message_digest->data,md_dat,md_len)))
1087 {
1088 #if 0
1089 {
1090 int ii;
1091 for (ii=0; ii<message_digest->length; ii++)
1092 printf("%02X",message_digest->data[ii]); printf(" sent\n");
1093 for (ii=0; ii<md_len; ii++) printf("%02X",md_dat[ii]); printf(" calc\n");
1094 }
1095 #endif
1096 PKCS7err(PKCS7_F_PKCS7_SIGNATUREVERIFY,
1097 PKCS7_R_DIGEST_FAILURE);
1098 ret= -1;
1099 goto err;
1100 }
1101
1102 if (!EVP_VerifyInit_ex(&mdc_tmp,EVP_get_digestbynid(md_type), NULL))
1103 goto err;
1104
1105 alen = ASN1_item_i2d((ASN1_VALUE *)sk, &abuf,
1106 ASN1_ITEM_rptr(PKCS7_ATTR_VERIFY));
1107 if (alen <= 0)
1108 {
1109 PKCS7err(PKCS7_F_PKCS7_SIGNATUREVERIFY,ERR_R_ASN1_LIB);
1110 ret = -1;
1111 goto err;
1112 }
1113 if (!EVP_VerifyUpdate(&mdc_tmp, abuf, alen))
1114 goto err;
1115
1116 OPENSSL_free(abuf);
1117 }
1118
1119 os=si->enc_digest;
1120 pkey = X509_get_pubkey(x509);
1121 if (!pkey)
1122 {
1123 ret = -1;
1124 goto err;
1125 }
1126
1127 i=EVP_VerifyFinal(&mdc_tmp,os->data,os->length, pkey);
1128 EVP_PKEY_free(pkey);
1129 if (i <= 0)
1130 {
1131 PKCS7err(PKCS7_F_PKCS7_SIGNATUREVERIFY,
1132 PKCS7_R_SIGNATURE_FAILURE);
1133 ret= -1;
1134 goto err;
1135 }
1136 else
1137 ret=1;
1138 err:
1139 EVP_MD_CTX_cleanup(&mdc_tmp);
1140 return(ret);
1141 }
1142
1143 PKCS7_ISSUER_AND_SERIAL *PKCS7_get_issuer_and_serial(PKCS7 *p7, int idx)
1144 {
1145 STACK_OF(PKCS7_RECIP_INFO) *rsk;
1146 PKCS7_RECIP_INFO *ri;
1147 int i;
1148
1149 i=OBJ_obj2nid(p7->type);
1150 if (i != NID_pkcs7_signedAndEnveloped)
1151 return NULL;
1152 if (p7->d.signed_and_enveloped == NULL)
1153 return NULL;
1154 rsk=p7->d.signed_and_enveloped->recipientinfo;
1155 if (rsk == NULL)
1156 return NULL;
1157 ri=sk_PKCS7_RECIP_INFO_value(rsk,0);
1158 if (sk_PKCS7_RECIP_INFO_num(rsk) <= idx) return(NULL);
1159 ri=sk_PKCS7_RECIP_INFO_value(rsk,idx);
1160 return(ri->issuer_and_serial);
1161 }
1162
1163 ASN1_TYPE *PKCS7_get_signed_attribute(PKCS7_SIGNER_INFO *si, int nid)
1164 {
1165 return(get_attribute(si->auth_attr,nid));
1166 }
1167
1168 ASN1_TYPE *PKCS7_get_attribute(PKCS7_SIGNER_INFO *si, int nid)
1169 {
1170 return(get_attribute(si->unauth_attr,nid));
1171 }
1172
1173 static ASN1_TYPE *get_attribute(STACK_OF(X509_ATTRIBUTE) *sk, int nid)
1174 {
1175 int i;
1176 X509_ATTRIBUTE *xa;
1177 ASN1_OBJECT *o;
1178
1179 o=OBJ_nid2obj(nid);
1180 if (!o || !sk) return(NULL);
1181 for (i=0; i<sk_X509_ATTRIBUTE_num(sk); i++)
1182 {
1183 xa=sk_X509_ATTRIBUTE_value(sk,i);
1184 if (OBJ_cmp(xa->object,o) == 0)
1185 {
1186 if (!xa->single && sk_ASN1_TYPE_num(xa->value.set))
1187 return(sk_ASN1_TYPE_value(xa->value.set,0));
1188 else
1189 return(NULL);
1190 }
1191 }
1192 return(NULL);
1193 }
1194
1195 ASN1_OCTET_STRING *PKCS7_digest_from_attributes(STACK_OF(X509_ATTRIBUTE) *sk)
1196 {
1197 ASN1_TYPE *astype;
1198 if(!(astype = get_attribute(sk, NID_pkcs9_messageDigest))) return NULL;
1199 return astype->value.octet_string;
1200 }
1201
1202 int PKCS7_set_signed_attributes(PKCS7_SIGNER_INFO *p7si,
1203 STACK_OF(X509_ATTRIBUTE) *sk)
1204 {
1205 int i;
1206
1207 if (p7si->auth_attr != NULL)
1208 sk_X509_ATTRIBUTE_pop_free(p7si->auth_attr,X509_ATTRIBUTE_free);
1209 p7si->auth_attr=sk_X509_ATTRIBUTE_dup(sk);
1210 if (p7si->auth_attr == NULL)
1211 return 0;
1212 for (i=0; i<sk_X509_ATTRIBUTE_num(sk); i++)
1213 {
1214 if ((sk_X509_ATTRIBUTE_set(p7si->auth_attr,i,
1215 X509_ATTRIBUTE_dup(sk_X509_ATTRIBUTE_value(sk,i))))
1216 == NULL)
1217 return(0);
1218 }
1219 return(1);
1220 }
1221
1222 int PKCS7_set_attributes(PKCS7_SIGNER_INFO *p7si, STACK_OF(X509_ATTRIBUTE) *sk)
1223 {
1224 int i;
1225
1226 if (p7si->unauth_attr != NULL)
1227 sk_X509_ATTRIBUTE_pop_free(p7si->unauth_attr,
1228 X509_ATTRIBUTE_free);
1229 p7si->unauth_attr=sk_X509_ATTRIBUTE_dup(sk);
1230 if (p7si->unauth_attr == NULL)
1231 return 0;
1232 for (i=0; i<sk_X509_ATTRIBUTE_num(sk); i++)
1233 {
1234 if ((sk_X509_ATTRIBUTE_set(p7si->unauth_attr,i,
1235 X509_ATTRIBUTE_dup(sk_X509_ATTRIBUTE_value(sk,i))))
1236 == NULL)
1237 return(0);
1238 }
1239 return(1);
1240 }
1241
1242 int PKCS7_add_signed_attribute(PKCS7_SIGNER_INFO *p7si, int nid, int atrtype,
1243 void *value)
1244 {
1245 return(add_attribute(&(p7si->auth_attr),nid,atrtype,value));
1246 }
1247
1248 int PKCS7_add_attribute(PKCS7_SIGNER_INFO *p7si, int nid, int atrtype,
1249 void *value)
1250 {
1251 return(add_attribute(&(p7si->unauth_attr),nid,atrtype,value));
1252 }
1253
1254 static int add_attribute(STACK_OF(X509_ATTRIBUTE) **sk, int nid, int atrtype,
1255 void *value)
1256 {
1257 X509_ATTRIBUTE *attr=NULL;
1258
1259 if (*sk == NULL)
1260 {
1261 *sk = sk_X509_ATTRIBUTE_new_null();
1262 if (*sk == NULL)
1263 return 0;
1264 new_attrib:
1265 if (!(attr=X509_ATTRIBUTE_create(nid,atrtype,value)))
1266 return 0;
1267 if (!sk_X509_ATTRIBUTE_push(*sk,attr))
1268 {
1269 X509_ATTRIBUTE_free(attr);
1270 return 0;
1271 }
1272 }
1273 else
1274 {
1275 int i;
1276
1277 for (i=0; i<sk_X509_ATTRIBUTE_num(*sk); i++)
1278 {
1279 attr=sk_X509_ATTRIBUTE_value(*sk,i);
1280 if (OBJ_obj2nid(attr->object) == nid)
1281 {
1282 X509_ATTRIBUTE_free(attr);
1283 attr=X509_ATTRIBUTE_create(nid,atrtype,value);
1284 if (attr == NULL)
1285 return 0;
1286 if (!sk_X509_ATTRIBUTE_set(*sk,i,attr))
1287 {
1288 X509_ATTRIBUTE_free(attr);
1289 return 0;
1290 }
1291 goto end;
1292 }
1293 }
1294 goto new_attrib;
1295 }
1296 end:
1297 return(1);
1298 }
1299