| 1 | /* pk7_smime.c */ |
| 2 | /* Written by Dr Stephen N Henson (shenson@bigfoot.com) for the OpenSSL |
| 3 | * project. |
| 4 | */ |
| 5 | /* ==================================================================== |
| 6 | * Copyright (c) 1999-2004 The OpenSSL Project. All rights reserved. |
| 7 | * |
| 8 | * Redistribution and use in source and binary forms, with or without |
| 9 | * modification, are permitted provided that the following conditions |
| 10 | * are met: |
| 11 | * |
| 12 | * 1. Redistributions of source code must retain the above copyright |
| 13 | * notice, this list of conditions and the following disclaimer. |
| 14 | * |
| 15 | * 2. Redistributions in binary form must reproduce the above copyright |
| 16 | * notice, this list of conditions and the following disclaimer in |
| 17 | * the documentation and/or other materials provided with the |
| 18 | * distribution. |
| 19 | * |
| 20 | * 3. All advertising materials mentioning features or use of this |
| 21 | * software must display the following acknowledgment: |
| 22 | * "This product includes software developed by the OpenSSL Project |
| 23 | * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)" |
| 24 | * |
| 25 | * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to |
| 26 | * endorse or promote products derived from this software without |
| 27 | * prior written permission. For written permission, please contact |
| 28 | * licensing@OpenSSL.org. |
| 29 | * |
| 30 | * 5. Products derived from this software may not be called "OpenSSL" |
| 31 | * nor may "OpenSSL" appear in their names without prior written |
| 32 | * permission of the OpenSSL Project. |
| 33 | * |
| 34 | * 6. Redistributions of any form whatsoever must retain the following |
| 35 | * acknowledgment: |
| 36 | * "This product includes software developed by the OpenSSL Project |
| 37 | * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)" |
| 38 | * |
| 39 | * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY |
| 40 | * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 41 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| 42 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR |
| 43 | * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| 44 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| 45 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
| 46 | * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 47 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, |
| 48 | * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| 49 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED |
| 50 | * OF THE POSSIBILITY OF SUCH DAMAGE. |
| 51 | * ==================================================================== |
| 52 | * |
| 53 | * This product includes cryptographic software written by Eric Young |
| 54 | * (eay@cryptsoft.com). This product includes software written by Tim |
| 55 | * Hudson (tjh@cryptsoft.com). |
| 56 | * |
| 57 | */ |
| 58 | |
| 59 | /* Simple PKCS#7 processing functions */ |
| 60 | |
| 61 | #include <stdio.h> |
| 62 | #include "cryptlib.h" |
| 63 | #include <openssl/x509.h> |
| 64 | #include <openssl/x509v3.h> |
| 65 | |
| 66 | PKCS7 *PKCS7_sign(X509 *signcert, EVP_PKEY *pkey, STACK_OF(X509) *certs, |
| 67 | BIO *data, int flags) |
| 68 | { |
| 69 | PKCS7 *p7 = NULL; |
| 70 | PKCS7_SIGNER_INFO *si; |
| 71 | BIO *p7bio = NULL; |
| 72 | STACK_OF(X509_ALGOR) *smcap = NULL; |
| 73 | int i; |
| 74 | |
| 75 | if(!X509_check_private_key(signcert, pkey)) { |
| 76 | PKCS7err(PKCS7_F_PKCS7_SIGN,PKCS7_R_PRIVATE_KEY_DOES_NOT_MATCH_CERTIFICATE); |
| 77 | return NULL; |
| 78 | } |
| 79 | |
| 80 | if(!(p7 = PKCS7_new())) { |
| 81 | PKCS7err(PKCS7_F_PKCS7_SIGN,ERR_R_MALLOC_FAILURE); |
| 82 | return NULL; |
| 83 | } |
| 84 | |
| 85 | if (!PKCS7_set_type(p7, NID_pkcs7_signed)) |
| 86 | goto err; |
| 87 | |
| 88 | if (!PKCS7_content_new(p7, NID_pkcs7_data)) |
| 89 | goto err; |
| 90 | |
| 91 | if (!(si = PKCS7_add_signature(p7,signcert,pkey,EVP_sha1()))) { |
| 92 | PKCS7err(PKCS7_F_PKCS7_SIGN,PKCS7_R_PKCS7_ADD_SIGNATURE_ERROR); |
| 93 | goto err; |
| 94 | } |
| 95 | |
| 96 | if(!(flags & PKCS7_NOCERTS)) { |
| 97 | if (!PKCS7_add_certificate(p7, signcert)) |
| 98 | goto err; |
| 99 | if(certs) for(i = 0; i < sk_X509_num(certs); i++) |
| 100 | if (!PKCS7_add_certificate(p7, sk_X509_value(certs, i))) |
| 101 | goto err; |
| 102 | } |
| 103 | |
| 104 | if(!(flags & PKCS7_NOATTR)) { |
| 105 | if (!PKCS7_add_signed_attribute(si, NID_pkcs9_contentType, |
| 106 | V_ASN1_OBJECT, OBJ_nid2obj(NID_pkcs7_data))) |
| 107 | goto err; |
| 108 | /* Add SMIMECapabilities */ |
| 109 | if(!(flags & PKCS7_NOSMIMECAP)) |
| 110 | { |
| 111 | if(!(smcap = sk_X509_ALGOR_new_null())) { |
| 112 | PKCS7err(PKCS7_F_PKCS7_SIGN,ERR_R_MALLOC_FAILURE); |
| 113 | goto err; |
| 114 | } |
| 115 | #ifndef OPENSSL_NO_DES |
| 116 | if (!PKCS7_simple_smimecap (smcap, NID_des_ede3_cbc, -1)) |
| 117 | goto err; |
| 118 | #endif |
| 119 | #ifndef OPENSSL_NO_RC2 |
| 120 | if (!PKCS7_simple_smimecap (smcap, NID_rc2_cbc, 128)) |
| 121 | goto err; |
| 122 | if (!PKCS7_simple_smimecap (smcap, NID_rc2_cbc, 64)) |
| 123 | goto err; |
| 124 | #endif |
| 125 | #ifndef OPENSSL_NO_DES |
| 126 | if (!PKCS7_simple_smimecap (smcap, NID_des_cbc, -1)) |
| 127 | goto err; |
| 128 | #endif |
| 129 | #ifndef OPENSSL_NO_RC2 |
| 130 | if (!PKCS7_simple_smimecap (smcap, NID_rc2_cbc, 40)) |
| 131 | goto err; |
| 132 | #endif |
| 133 | if (!PKCS7_add_attrib_smimecap (si, smcap)) |
| 134 | goto err; |
| 135 | sk_X509_ALGOR_pop_free(smcap, X509_ALGOR_free); |
| 136 | smcap = NULL; |
| 137 | } |
| 138 | } |
| 139 | |
| 140 | if(flags & PKCS7_DETACHED)PKCS7_set_detached(p7, 1); |
| 141 | |
| 142 | if (flags & PKCS7_STREAM) |
| 143 | return p7; |
| 144 | |
| 145 | |
| 146 | if (!(p7bio = PKCS7_dataInit(p7, NULL))) { |
| 147 | PKCS7err(PKCS7_F_PKCS7_SIGN,ERR_R_MALLOC_FAILURE); |
| 148 | goto err; |
| 149 | } |
| 150 | |
| 151 | SMIME_crlf_copy(data, p7bio, flags); |
| 152 | |
| 153 | |
| 154 | if (!PKCS7_dataFinal(p7,p7bio)) { |
| 155 | PKCS7err(PKCS7_F_PKCS7_SIGN,PKCS7_R_PKCS7_DATASIGN); |
| 156 | goto err; |
| 157 | } |
| 158 | |
| 159 | BIO_free_all(p7bio); |
| 160 | return p7; |
| 161 | err: |
| 162 | sk_X509_ALGOR_pop_free(smcap, X509_ALGOR_free); |
| 163 | BIO_free_all(p7bio); |
| 164 | PKCS7_free(p7); |
| 165 | return NULL; |
| 166 | } |
| 167 | |
| 168 | int PKCS7_verify(PKCS7 *p7, STACK_OF(X509) *certs, X509_STORE *store, |
| 169 | BIO *indata, BIO *out, int flags) |
| 170 | { |
| 171 | STACK_OF(X509) *signers; |
| 172 | X509 *signer; |
| 173 | STACK_OF(PKCS7_SIGNER_INFO) *sinfos; |
| 174 | PKCS7_SIGNER_INFO *si; |
| 175 | X509_STORE_CTX cert_ctx; |
| 176 | char buf[4096]; |
| 177 | int i, j=0, k, ret = 0; |
| 178 | BIO *p7bio; |
| 179 | BIO *tmpin, *tmpout; |
| 180 | |
| 181 | if(!p7) { |
| 182 | PKCS7err(PKCS7_F_PKCS7_VERIFY,PKCS7_R_INVALID_NULL_POINTER); |
| 183 | return 0; |
| 184 | } |
| 185 | |
| 186 | if(!PKCS7_type_is_signed(p7)) { |
| 187 | PKCS7err(PKCS7_F_PKCS7_VERIFY,PKCS7_R_WRONG_CONTENT_TYPE); |
| 188 | return 0; |
| 189 | } |
| 190 | |
| 191 | /* Check for no data and no content: no data to verify signature */ |
| 192 | if(PKCS7_get_detached(p7) && !indata) { |
| 193 | PKCS7err(PKCS7_F_PKCS7_VERIFY,PKCS7_R_NO_CONTENT); |
| 194 | return 0; |
| 195 | } |
| 196 | #if 0 |
| 197 | /* NB: this test commented out because some versions of Netscape |
| 198 | * illegally include zero length content when signing data. |
| 199 | */ |
| 200 | |
| 201 | /* Check for data and content: two sets of data */ |
| 202 | if(!PKCS7_get_detached(p7) && indata) { |
| 203 | PKCS7err(PKCS7_F_PKCS7_VERIFY,PKCS7_R_CONTENT_AND_DATA_PRESENT); |
| 204 | return 0; |
| 205 | } |
| 206 | #endif |
| 207 | |
| 208 | sinfos = PKCS7_get_signer_info(p7); |
| 209 | |
| 210 | if(!sinfos || !sk_PKCS7_SIGNER_INFO_num(sinfos)) { |
| 211 | PKCS7err(PKCS7_F_PKCS7_VERIFY,PKCS7_R_NO_SIGNATURES_ON_DATA); |
| 212 | return 0; |
| 213 | } |
| 214 | |
| 215 | |
| 216 | signers = PKCS7_get0_signers(p7, certs, flags); |
| 217 | |
| 218 | if(!signers) return 0; |
| 219 | |
| 220 | /* Now verify the certificates */ |
| 221 | |
| 222 | if (!(flags & PKCS7_NOVERIFY)) for (k = 0; k < sk_X509_num(signers); k++) { |
| 223 | signer = sk_X509_value (signers, k); |
| 224 | if (!(flags & PKCS7_NOCHAIN)) { |
| 225 | if(!X509_STORE_CTX_init(&cert_ctx, store, signer, |
| 226 | p7->d.sign->cert)) |
| 227 | { |
| 228 | PKCS7err(PKCS7_F_PKCS7_VERIFY,ERR_R_X509_LIB); |
| 229 | sk_X509_free(signers); |
| 230 | return 0; |
| 231 | } |
| 232 | X509_STORE_CTX_set_purpose(&cert_ctx, |
| 233 | X509_PURPOSE_SMIME_SIGN); |
| 234 | } else if(!X509_STORE_CTX_init (&cert_ctx, store, signer, NULL)) { |
| 235 | PKCS7err(PKCS7_F_PKCS7_VERIFY,ERR_R_X509_LIB); |
| 236 | sk_X509_free(signers); |
| 237 | return 0; |
| 238 | } |
| 239 | if (!(flags & PKCS7_NOCRL)) |
| 240 | X509_STORE_CTX_set0_crls(&cert_ctx, p7->d.sign->crl); |
| 241 | i = X509_verify_cert(&cert_ctx); |
| 242 | if (i <= 0) j = X509_STORE_CTX_get_error(&cert_ctx); |
| 243 | X509_STORE_CTX_cleanup(&cert_ctx); |
| 244 | if (i <= 0) { |
| 245 | PKCS7err(PKCS7_F_PKCS7_VERIFY,PKCS7_R_CERTIFICATE_VERIFY_ERROR); |
| 246 | ERR_add_error_data(2, "Verify error:", |
| 247 | X509_verify_cert_error_string(j)); |
| 248 | sk_X509_free(signers); |
| 249 | return 0; |
| 250 | } |
| 251 | /* Check for revocation status here */ |
| 252 | } |
| 253 | |
| 254 | /* Performance optimization: if the content is a memory BIO then |
| 255 | * store its contents in a temporary read only memory BIO. This |
| 256 | * avoids potentially large numbers of slow copies of data which will |
| 257 | * occur when reading from a read write memory BIO when signatures |
| 258 | * are calculated. |
| 259 | */ |
| 260 | |
| 261 | if (indata && (BIO_method_type(indata) == BIO_TYPE_MEM)) |
| 262 | { |
| 263 | char *ptr; |
| 264 | long len; |
| 265 | len = BIO_get_mem_data(indata, &ptr); |
| 266 | tmpin = BIO_new_mem_buf(ptr, len); |
| 267 | if (tmpin == NULL) |
| 268 | { |
| 269 | PKCS7err(PKCS7_F_PKCS7_VERIFY,ERR_R_MALLOC_FAILURE); |
| 270 | return 0; |
| 271 | } |
| 272 | } |
| 273 | else |
| 274 | tmpin = indata; |
| 275 | |
| 276 | |
| 277 | if (!(p7bio=PKCS7_dataInit(p7,tmpin))) |
| 278 | goto err; |
| 279 | |
| 280 | if(flags & PKCS7_TEXT) { |
| 281 | if(!(tmpout = BIO_new(BIO_s_mem()))) { |
| 282 | PKCS7err(PKCS7_F_PKCS7_VERIFY,ERR_R_MALLOC_FAILURE); |
| 283 | goto err; |
| 284 | } |
| 285 | } else tmpout = out; |
| 286 | |
| 287 | /* We now have to 'read' from p7bio to calculate digests etc. */ |
| 288 | for (;;) |
| 289 | { |
| 290 | i=BIO_read(p7bio,buf,sizeof(buf)); |
| 291 | if (i <= 0) break; |
| 292 | if (tmpout) BIO_write(tmpout, buf, i); |
| 293 | } |
| 294 | |
| 295 | if(flags & PKCS7_TEXT) { |
| 296 | if(!SMIME_text(tmpout, out)) { |
| 297 | PKCS7err(PKCS7_F_PKCS7_VERIFY,PKCS7_R_SMIME_TEXT_ERROR); |
| 298 | BIO_free(tmpout); |
| 299 | goto err; |
| 300 | } |
| 301 | BIO_free(tmpout); |
| 302 | } |
| 303 | |
| 304 | /* Now Verify All Signatures */ |
| 305 | if (!(flags & PKCS7_NOSIGS)) |
| 306 | for (i=0; i<sk_PKCS7_SIGNER_INFO_num(sinfos); i++) |
| 307 | { |
| 308 | si=sk_PKCS7_SIGNER_INFO_value(sinfos,i); |
| 309 | signer = sk_X509_value (signers, i); |
| 310 | j=PKCS7_signatureVerify(p7bio,p7,si, signer); |
| 311 | if (j <= 0) { |
| 312 | PKCS7err(PKCS7_F_PKCS7_VERIFY,PKCS7_R_SIGNATURE_FAILURE); |
| 313 | goto err; |
| 314 | } |
| 315 | } |
| 316 | |
| 317 | ret = 1; |
| 318 | |
| 319 | err: |
| 320 | |
| 321 | if (tmpin == indata) |
| 322 | { |
| 323 | if (indata) BIO_pop(p7bio); |
| 324 | } |
| 325 | BIO_free_all(p7bio); |
| 326 | |
| 327 | sk_X509_free(signers); |
| 328 | |
| 329 | return ret; |
| 330 | } |
| 331 | |
| 332 | STACK_OF(X509) *PKCS7_get0_signers(PKCS7 *p7, STACK_OF(X509) *certs, int flags) |
| 333 | { |
| 334 | STACK_OF(X509) *signers; |
| 335 | STACK_OF(PKCS7_SIGNER_INFO) *sinfos; |
| 336 | PKCS7_SIGNER_INFO *si; |
| 337 | PKCS7_ISSUER_AND_SERIAL *ias; |
| 338 | X509 *signer; |
| 339 | int i; |
| 340 | |
| 341 | if(!p7) { |
| 342 | PKCS7err(PKCS7_F_PKCS7_GET0_SIGNERS,PKCS7_R_INVALID_NULL_POINTER); |
| 343 | return NULL; |
| 344 | } |
| 345 | |
| 346 | if(!PKCS7_type_is_signed(p7)) { |
| 347 | PKCS7err(PKCS7_F_PKCS7_GET0_SIGNERS,PKCS7_R_WRONG_CONTENT_TYPE); |
| 348 | return NULL; |
| 349 | } |
| 350 | |
| 351 | /* Collect all the signers together */ |
| 352 | |
| 353 | sinfos = PKCS7_get_signer_info(p7); |
| 354 | |
| 355 | if(sk_PKCS7_SIGNER_INFO_num(sinfos) <= 0) { |
| 356 | PKCS7err(PKCS7_F_PKCS7_GET0_SIGNERS,PKCS7_R_NO_SIGNERS); |
| 357 | return NULL; |
| 358 | } |
| 359 | |
| 360 | if(!(signers = sk_X509_new_null())) { |
| 361 | PKCS7err(PKCS7_F_PKCS7_GET0_SIGNERS,ERR_R_MALLOC_FAILURE); |
| 362 | return NULL; |
| 363 | } |
| 364 | |
| 365 | for (i = 0; i < sk_PKCS7_SIGNER_INFO_num(sinfos); i++) |
| 366 | { |
| 367 | si = sk_PKCS7_SIGNER_INFO_value(sinfos, i); |
| 368 | ias = si->issuer_and_serial; |
| 369 | signer = NULL; |
| 370 | /* If any certificates passed they take priority */ |
| 371 | if (certs) signer = X509_find_by_issuer_and_serial (certs, |
| 372 | ias->issuer, ias->serial); |
| 373 | if (!signer && !(flags & PKCS7_NOINTERN) |
| 374 | && p7->d.sign->cert) signer = |
| 375 | X509_find_by_issuer_and_serial (p7->d.sign->cert, |
| 376 | ias->issuer, ias->serial); |
| 377 | if (!signer) { |
| 378 | PKCS7err(PKCS7_F_PKCS7_GET0_SIGNERS,PKCS7_R_SIGNER_CERTIFICATE_NOT_FOUND); |
| 379 | sk_X509_free(signers); |
| 380 | return NULL; |
| 381 | } |
| 382 | |
| 383 | if (!sk_X509_push(signers, signer)) { |
| 384 | sk_X509_free(signers); |
| 385 | return NULL; |
| 386 | } |
| 387 | } |
| 388 | return signers; |
| 389 | } |
| 390 | |
| 391 | |
| 392 | /* Build a complete PKCS#7 enveloped data */ |
| 393 | |
| 394 | PKCS7 *PKCS7_encrypt(STACK_OF(X509) *certs, BIO *in, const EVP_CIPHER *cipher, |
| 395 | int flags) |
| 396 | { |
| 397 | PKCS7 *p7; |
| 398 | BIO *p7bio = NULL; |
| 399 | int i; |
| 400 | X509 *x509; |
| 401 | if(!(p7 = PKCS7_new())) { |
| 402 | PKCS7err(PKCS7_F_PKCS7_ENCRYPT,ERR_R_MALLOC_FAILURE); |
| 403 | return NULL; |
| 404 | } |
| 405 | |
| 406 | if (!PKCS7_set_type(p7, NID_pkcs7_enveloped)) |
| 407 | goto err; |
| 408 | if(!PKCS7_set_cipher(p7, cipher)) { |
| 409 | PKCS7err(PKCS7_F_PKCS7_ENCRYPT,PKCS7_R_ERROR_SETTING_CIPHER); |
| 410 | goto err; |
| 411 | } |
| 412 | |
| 413 | for(i = 0; i < sk_X509_num(certs); i++) { |
| 414 | x509 = sk_X509_value(certs, i); |
| 415 | if(!PKCS7_add_recipient(p7, x509)) { |
| 416 | PKCS7err(PKCS7_F_PKCS7_ENCRYPT, |
| 417 | PKCS7_R_ERROR_ADDING_RECIPIENT); |
| 418 | goto err; |
| 419 | } |
| 420 | } |
| 421 | |
| 422 | if(!(p7bio = PKCS7_dataInit(p7, NULL))) { |
| 423 | PKCS7err(PKCS7_F_PKCS7_ENCRYPT,ERR_R_MALLOC_FAILURE); |
| 424 | goto err; |
| 425 | } |
| 426 | |
| 427 | SMIME_crlf_copy(in, p7bio, flags); |
| 428 | |
| 429 | (void)BIO_flush(p7bio); |
| 430 | |
| 431 | if (!PKCS7_dataFinal(p7,p7bio)) { |
| 432 | PKCS7err(PKCS7_F_PKCS7_ENCRYPT,PKCS7_R_PKCS7_DATAFINAL_ERROR); |
| 433 | goto err; |
| 434 | } |
| 435 | BIO_free_all(p7bio); |
| 436 | |
| 437 | return p7; |
| 438 | |
| 439 | err: |
| 440 | |
| 441 | BIO_free_all(p7bio); |
| 442 | PKCS7_free(p7); |
| 443 | return NULL; |
| 444 | |
| 445 | } |
| 446 | |
| 447 | int PKCS7_decrypt(PKCS7 *p7, EVP_PKEY *pkey, X509 *cert, BIO *data, int flags) |
| 448 | { |
| 449 | BIO *tmpmem; |
| 450 | int ret, i; |
| 451 | char buf[4096]; |
| 452 | |
| 453 | if(!p7) { |
| 454 | PKCS7err(PKCS7_F_PKCS7_DECRYPT,PKCS7_R_INVALID_NULL_POINTER); |
| 455 | return 0; |
| 456 | } |
| 457 | |
| 458 | if(!PKCS7_type_is_enveloped(p7)) { |
| 459 | PKCS7err(PKCS7_F_PKCS7_DECRYPT,PKCS7_R_WRONG_CONTENT_TYPE); |
| 460 | return 0; |
| 461 | } |
| 462 | |
| 463 | if(cert && !X509_check_private_key(cert, pkey)) { |
| 464 | PKCS7err(PKCS7_F_PKCS7_DECRYPT, |
| 465 | PKCS7_R_PRIVATE_KEY_DOES_NOT_MATCH_CERTIFICATE); |
| 466 | return 0; |
| 467 | } |
| 468 | |
| 469 | if(!(tmpmem = PKCS7_dataDecode(p7, pkey, NULL, cert))) { |
| 470 | PKCS7err(PKCS7_F_PKCS7_DECRYPT, PKCS7_R_DECRYPT_ERROR); |
| 471 | return 0; |
| 472 | } |
| 473 | |
| 474 | if (flags & PKCS7_TEXT) { |
| 475 | BIO *tmpbuf, *bread; |
| 476 | /* Encrypt BIOs can't do BIO_gets() so add a buffer BIO */ |
| 477 | if(!(tmpbuf = BIO_new(BIO_f_buffer()))) { |
| 478 | PKCS7err(PKCS7_F_PKCS7_DECRYPT, ERR_R_MALLOC_FAILURE); |
| 479 | BIO_free_all(tmpmem); |
| 480 | return 0; |
| 481 | } |
| 482 | if(!(bread = BIO_push(tmpbuf, tmpmem))) { |
| 483 | PKCS7err(PKCS7_F_PKCS7_DECRYPT, ERR_R_MALLOC_FAILURE); |
| 484 | BIO_free_all(tmpbuf); |
| 485 | BIO_free_all(tmpmem); |
| 486 | return 0; |
| 487 | } |
| 488 | ret = SMIME_text(bread, data); |
| 489 | BIO_free_all(bread); |
| 490 | return ret; |
| 491 | } else { |
| 492 | for(;;) { |
| 493 | i = BIO_read(tmpmem, buf, sizeof(buf)); |
| 494 | if(i <= 0) break; |
| 495 | BIO_write(data, buf, i); |
| 496 | } |
| 497 | BIO_free_all(tmpmem); |
| 498 | return 1; |
| 499 | } |
| 500 | } |