diff options
Diffstat (limited to 'openssl/crypto/pkcs7/pk7_smime.c')
| -rw-r--r-- | openssl/crypto/pkcs7/pk7_smime.c | 974 |
1 files changed, 477 insertions, 497 deletions
diff --git a/openssl/crypto/pkcs7/pk7_smime.c b/openssl/crypto/pkcs7/pk7_smime.c index a5104f8d0..dbd4100c8 100644 --- a/openssl/crypto/pkcs7/pk7_smime.c +++ b/openssl/crypto/pkcs7/pk7_smime.c @@ -1,5 +1,6 @@ /* pk7_smime.c */ -/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL +/* + * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL * project. */ /* ==================================================================== @@ -10,7 +11,7 @@ * are met: * * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. + * notice, this list of conditions and the following disclaimer. * * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in @@ -66,541 +67,520 @@ static int pkcs7_copy_existing_digest(PKCS7 *p7, PKCS7_SIGNER_INFO *si); PKCS7 *PKCS7_sign(X509 *signcert, EVP_PKEY *pkey, STACK_OF(X509) *certs, - BIO *data, int flags) + BIO *data, int flags) { - PKCS7 *p7; - int i; - - if(!(p7 = PKCS7_new())) - { - PKCS7err(PKCS7_F_PKCS7_SIGN,ERR_R_MALLOC_FAILURE); - return NULL; - } - - if (!PKCS7_set_type(p7, NID_pkcs7_signed)) - goto err; - - if (!PKCS7_content_new(p7, NID_pkcs7_data)) - goto err; - - if (pkey && !PKCS7_sign_add_signer(p7, signcert, pkey, NULL, flags)) - { - PKCS7err(PKCS7_F_PKCS7_SIGN,PKCS7_R_PKCS7_ADD_SIGNER_ERROR); - goto err; - } - - if(!(flags & PKCS7_NOCERTS)) - { - for(i = 0; i < sk_X509_num(certs); i++) - { - if (!PKCS7_add_certificate(p7, sk_X509_value(certs, i))) - goto err; - } - } - - if(flags & PKCS7_DETACHED) - PKCS7_set_detached(p7, 1); - - if (flags & (PKCS7_STREAM|PKCS7_PARTIAL)) - return p7; - - if (PKCS7_final(p7, data, flags)) - return p7; - - err: - PKCS7_free(p7); - return NULL; + PKCS7 *p7; + int i; + + if (!(p7 = PKCS7_new())) { + PKCS7err(PKCS7_F_PKCS7_SIGN, ERR_R_MALLOC_FAILURE); + return NULL; + } + + if (!PKCS7_set_type(p7, NID_pkcs7_signed)) + goto err; + + if (!PKCS7_content_new(p7, NID_pkcs7_data)) + goto err; + + if (pkey && !PKCS7_sign_add_signer(p7, signcert, pkey, NULL, flags)) { + PKCS7err(PKCS7_F_PKCS7_SIGN, PKCS7_R_PKCS7_ADD_SIGNER_ERROR); + goto err; + } + + if (!(flags & PKCS7_NOCERTS)) { + for (i = 0; i < sk_X509_num(certs); i++) { + if (!PKCS7_add_certificate(p7, sk_X509_value(certs, i))) + goto err; + } + } + + if (flags & PKCS7_DETACHED) + PKCS7_set_detached(p7, 1); + + if (flags & (PKCS7_STREAM | PKCS7_PARTIAL)) + return p7; + + if (PKCS7_final(p7, data, flags)) + return p7; + + err: + PKCS7_free(p7); + return NULL; } int PKCS7_final(PKCS7 *p7, BIO *data, int flags) - { - BIO *p7bio; - int ret = 0; - if (!(p7bio = PKCS7_dataInit(p7, NULL))) - { - PKCS7err(PKCS7_F_PKCS7_FINAL,ERR_R_MALLOC_FAILURE); - return 0; - } - - SMIME_crlf_copy(data, p7bio, flags); +{ + BIO *p7bio; + int ret = 0; + if (!(p7bio = PKCS7_dataInit(p7, NULL))) { + PKCS7err(PKCS7_F_PKCS7_FINAL, ERR_R_MALLOC_FAILURE); + return 0; + } - (void)BIO_flush(p7bio); + SMIME_crlf_copy(data, p7bio, flags); + (void)BIO_flush(p7bio); - if (!PKCS7_dataFinal(p7,p7bio)) - { - PKCS7err(PKCS7_F_PKCS7_FINAL,PKCS7_R_PKCS7_DATASIGN); - goto err; - } + if (!PKCS7_dataFinal(p7, p7bio)) { + PKCS7err(PKCS7_F_PKCS7_FINAL, PKCS7_R_PKCS7_DATASIGN); + goto err; + } - ret = 1; + ret = 1; - err: - BIO_free_all(p7bio); + err: + BIO_free_all(p7bio); - return ret; + return ret; - } +} /* Check to see if a cipher exists and if so add S/MIME capabilities */ static int add_cipher_smcap(STACK_OF(X509_ALGOR) *sk, int nid, int arg) - { - if (EVP_get_cipherbynid(nid)) - return PKCS7_simple_smimecap(sk, nid, arg); - return 1; - } +{ + if (EVP_get_cipherbynid(nid)) + return PKCS7_simple_smimecap(sk, nid, arg); + return 1; +} static int add_digest_smcap(STACK_OF(X509_ALGOR) *sk, int nid, int arg) - { - if (EVP_get_digestbynid(nid)) - return PKCS7_simple_smimecap(sk, nid, arg); - return 1; - } +{ + if (EVP_get_digestbynid(nid)) + return PKCS7_simple_smimecap(sk, nid, arg); + return 1; +} PKCS7_SIGNER_INFO *PKCS7_sign_add_signer(PKCS7 *p7, X509 *signcert, - EVP_PKEY *pkey, const EVP_MD *md, - int flags) - { - PKCS7_SIGNER_INFO *si = NULL; - STACK_OF(X509_ALGOR) *smcap = NULL; - if(!X509_check_private_key(signcert, pkey)) - { - PKCS7err(PKCS7_F_PKCS7_SIGN_ADD_SIGNER, - PKCS7_R_PRIVATE_KEY_DOES_NOT_MATCH_CERTIFICATE); - return NULL; - } - - if (!(si = PKCS7_add_signature(p7,signcert,pkey, md))) - { - PKCS7err(PKCS7_F_PKCS7_SIGN_ADD_SIGNER, - PKCS7_R_PKCS7_ADD_SIGNATURE_ERROR); - return NULL; - } - - if(!(flags & PKCS7_NOCERTS)) - { - if (!PKCS7_add_certificate(p7, signcert)) - goto err; - } - - if(!(flags & PKCS7_NOATTR)) - { - if (!PKCS7_add_attrib_content_type(si, NULL)) - goto err; - /* Add SMIMECapabilities */ - if(!(flags & PKCS7_NOSMIMECAP)) - { - if(!(smcap = sk_X509_ALGOR_new_null())) - { - PKCS7err(PKCS7_F_PKCS7_SIGN_ADD_SIGNER, - ERR_R_MALLOC_FAILURE); - goto err; - } - if (!add_cipher_smcap(smcap, NID_aes_256_cbc, -1) - || !add_digest_smcap(smcap, NID_id_GostR3411_94, -1) - || !add_cipher_smcap(smcap, NID_id_Gost28147_89, -1) - || !add_cipher_smcap(smcap, NID_aes_192_cbc, -1) - || !add_cipher_smcap(smcap, NID_aes_128_cbc, -1) - || !add_cipher_smcap(smcap, NID_des_ede3_cbc, -1) - || !add_cipher_smcap(smcap, NID_rc2_cbc, 128) - || !add_cipher_smcap(smcap, NID_rc2_cbc, 64) - || !add_cipher_smcap(smcap, NID_des_cbc, -1) - || !add_cipher_smcap(smcap, NID_rc2_cbc, 40) - || !PKCS7_add_attrib_smimecap (si, smcap)) - goto err; - sk_X509_ALGOR_pop_free(smcap, X509_ALGOR_free); - smcap = NULL; - } - if (flags & PKCS7_REUSE_DIGEST) - { - if (!pkcs7_copy_existing_digest(p7, si)) - goto err; - if (!(flags & PKCS7_PARTIAL) && - !PKCS7_SIGNER_INFO_sign(si)) - goto err; - } - } - return si; - err: - if (smcap) - sk_X509_ALGOR_pop_free(smcap, X509_ALGOR_free); - return NULL; - } - -/* Search for a digest matching SignerInfo digest type and if found - * copy across. + EVP_PKEY *pkey, const EVP_MD *md, + int flags) +{ + PKCS7_SIGNER_INFO *si = NULL; + STACK_OF(X509_ALGOR) *smcap = NULL; + if (!X509_check_private_key(signcert, pkey)) { + PKCS7err(PKCS7_F_PKCS7_SIGN_ADD_SIGNER, + PKCS7_R_PRIVATE_KEY_DOES_NOT_MATCH_CERTIFICATE); + return NULL; + } + + if (!(si = PKCS7_add_signature(p7, signcert, pkey, md))) { + PKCS7err(PKCS7_F_PKCS7_SIGN_ADD_SIGNER, + PKCS7_R_PKCS7_ADD_SIGNATURE_ERROR); + return NULL; + } + + if (!(flags & PKCS7_NOCERTS)) { + if (!PKCS7_add_certificate(p7, signcert)) + goto err; + } + + if (!(flags & PKCS7_NOATTR)) { + if (!PKCS7_add_attrib_content_type(si, NULL)) + goto err; + /* Add SMIMECapabilities */ + if (!(flags & PKCS7_NOSMIMECAP)) { + if (!(smcap = sk_X509_ALGOR_new_null())) { + PKCS7err(PKCS7_F_PKCS7_SIGN_ADD_SIGNER, ERR_R_MALLOC_FAILURE); + goto err; + } + if (!add_cipher_smcap(smcap, NID_aes_256_cbc, -1) + || !add_digest_smcap(smcap, NID_id_GostR3411_94, -1) + || !add_cipher_smcap(smcap, NID_id_Gost28147_89, -1) + || !add_cipher_smcap(smcap, NID_aes_192_cbc, -1) + || !add_cipher_smcap(smcap, NID_aes_128_cbc, -1) + || !add_cipher_smcap(smcap, NID_des_ede3_cbc, -1) + || !add_cipher_smcap(smcap, NID_rc2_cbc, 128) + || !add_cipher_smcap(smcap, NID_rc2_cbc, 64) + || !add_cipher_smcap(smcap, NID_des_cbc, -1) + || !add_cipher_smcap(smcap, NID_rc2_cbc, 40) + || !PKCS7_add_attrib_smimecap(si, smcap)) + goto err; + sk_X509_ALGOR_pop_free(smcap, X509_ALGOR_free); + smcap = NULL; + } + if (flags & PKCS7_REUSE_DIGEST) { + if (!pkcs7_copy_existing_digest(p7, si)) + goto err; + if (!(flags & PKCS7_PARTIAL) && !PKCS7_SIGNER_INFO_sign(si)) + goto err; + } + } + return si; + err: + if (smcap) + sk_X509_ALGOR_pop_free(smcap, X509_ALGOR_free); + return NULL; +} + +/* + * Search for a digest matching SignerInfo digest type and if found copy + * across. */ static int pkcs7_copy_existing_digest(PKCS7 *p7, PKCS7_SIGNER_INFO *si) - { - int i; - STACK_OF(PKCS7_SIGNER_INFO) *sinfos; - PKCS7_SIGNER_INFO *sitmp; - ASN1_OCTET_STRING *osdig = NULL; - sinfos = PKCS7_get_signer_info(p7); - for (i = 0; i < sk_PKCS7_SIGNER_INFO_num(sinfos); i++) - { - sitmp = sk_PKCS7_SIGNER_INFO_value(sinfos, i); - if (si == sitmp) - break; - if (sk_X509_ATTRIBUTE_num(sitmp->auth_attr) <= 0) - continue; - if (!OBJ_cmp(si->digest_alg->algorithm, - sitmp->digest_alg->algorithm)) - { - osdig = PKCS7_digest_from_attributes(sitmp->auth_attr); - break; - } - - } - - if (osdig) - return PKCS7_add1_attrib_digest(si, osdig->data, osdig->length); - - PKCS7err(PKCS7_F_PKCS7_COPY_EXISTING_DIGEST, - PKCS7_R_NO_MATCHING_DIGEST_TYPE_FOUND); - return 0; - } +{ + int i; + STACK_OF(PKCS7_SIGNER_INFO) *sinfos; + PKCS7_SIGNER_INFO *sitmp; + ASN1_OCTET_STRING *osdig = NULL; + sinfos = PKCS7_get_signer_info(p7); + for (i = 0; i < sk_PKCS7_SIGNER_INFO_num(sinfos); i++) { + sitmp = sk_PKCS7_SIGNER_INFO_value(sinfos, i); + if (si == sitmp) + break; + if (sk_X509_ATTRIBUTE_num(sitmp->auth_attr) <= 0) + continue; + if (!OBJ_cmp(si->digest_alg->algorithm, sitmp->digest_alg->algorithm)) { + osdig = PKCS7_digest_from_attributes(sitmp->auth_attr); + break; + } + + } + + if (osdig) + return PKCS7_add1_attrib_digest(si, osdig->data, osdig->length); + + PKCS7err(PKCS7_F_PKCS7_COPY_EXISTING_DIGEST, + PKCS7_R_NO_MATCHING_DIGEST_TYPE_FOUND); + return 0; +} int PKCS7_verify(PKCS7 *p7, STACK_OF(X509) *certs, X509_STORE *store, - BIO *indata, BIO *out, int flags) + BIO *indata, BIO *out, int flags) { - STACK_OF(X509) *signers; - X509 *signer; - STACK_OF(PKCS7_SIGNER_INFO) *sinfos; - PKCS7_SIGNER_INFO *si; - X509_STORE_CTX cert_ctx; - char buf[4096]; - int i, j=0, k, ret = 0; - BIO *p7bio; - BIO *tmpin, *tmpout; - - if(!p7) { - PKCS7err(PKCS7_F_PKCS7_VERIFY,PKCS7_R_INVALID_NULL_POINTER); - return 0; - } - - if(!PKCS7_type_is_signed(p7)) { - PKCS7err(PKCS7_F_PKCS7_VERIFY,PKCS7_R_WRONG_CONTENT_TYPE); - return 0; - } - - /* Check for no data and no content: no data to verify signature */ - if(PKCS7_get_detached(p7) && !indata) { - PKCS7err(PKCS7_F_PKCS7_VERIFY,PKCS7_R_NO_CONTENT); - return 0; - } + STACK_OF(X509) *signers; + X509 *signer; + STACK_OF(PKCS7_SIGNER_INFO) *sinfos; + PKCS7_SIGNER_INFO *si; + X509_STORE_CTX cert_ctx; + char buf[4096]; + int i, j = 0, k, ret = 0; + BIO *p7bio; + BIO *tmpin, *tmpout; + + if (!p7) { + PKCS7err(PKCS7_F_PKCS7_VERIFY, PKCS7_R_INVALID_NULL_POINTER); + return 0; + } + + if (!PKCS7_type_is_signed(p7)) { + PKCS7err(PKCS7_F_PKCS7_VERIFY, PKCS7_R_WRONG_CONTENT_TYPE); + return 0; + } + + /* Check for no data and no content: no data to verify signature */ + if (PKCS7_get_detached(p7) && !indata) { + PKCS7err(PKCS7_F_PKCS7_VERIFY, PKCS7_R_NO_CONTENT); + return 0; + } #if 0 - /* NB: this test commented out because some versions of Netscape - * illegally include zero length content when signing data. - */ - - /* Check for data and content: two sets of data */ - if(!PKCS7_get_detached(p7) && indata) { - PKCS7err(PKCS7_F_PKCS7_VERIFY,PKCS7_R_CONTENT_AND_DATA_PRESENT); - return 0; - } + /* + * NB: this test commented out because some versions of Netscape + * illegally include zero length content when signing data. + */ + + /* Check for data and content: two sets of data */ + if (!PKCS7_get_detached(p7) && indata) { + PKCS7err(PKCS7_F_PKCS7_VERIFY, PKCS7_R_CONTENT_AND_DATA_PRESENT); + return 0; + } #endif - sinfos = PKCS7_get_signer_info(p7); - - if(!sinfos || !sk_PKCS7_SIGNER_INFO_num(sinfos)) { - PKCS7err(PKCS7_F_PKCS7_VERIFY,PKCS7_R_NO_SIGNATURES_ON_DATA); - return 0; - } - - - signers = PKCS7_get0_signers(p7, certs, flags); - - if(!signers) return 0; - - /* Now verify the certificates */ - - if (!(flags & PKCS7_NOVERIFY)) for (k = 0; k < sk_X509_num(signers); k++) { - signer = sk_X509_value (signers, k); - if (!(flags & PKCS7_NOCHAIN)) { - if(!X509_STORE_CTX_init(&cert_ctx, store, signer, - p7->d.sign->cert)) - { - PKCS7err(PKCS7_F_PKCS7_VERIFY,ERR_R_X509_LIB); - sk_X509_free(signers); - return 0; - } - X509_STORE_CTX_set_default(&cert_ctx, "smime_sign"); - } else if(!X509_STORE_CTX_init (&cert_ctx, store, signer, NULL)) { - PKCS7err(PKCS7_F_PKCS7_VERIFY,ERR_R_X509_LIB); - sk_X509_free(signers); - return 0; - } - if (!(flags & PKCS7_NOCRL)) - X509_STORE_CTX_set0_crls(&cert_ctx, p7->d.sign->crl); - i = X509_verify_cert(&cert_ctx); - if (i <= 0) j = X509_STORE_CTX_get_error(&cert_ctx); - X509_STORE_CTX_cleanup(&cert_ctx); - if (i <= 0) { - PKCS7err(PKCS7_F_PKCS7_VERIFY,PKCS7_R_CERTIFICATE_VERIFY_ERROR); - ERR_add_error_data(2, "Verify error:", - X509_verify_cert_error_string(j)); - sk_X509_free(signers); - return 0; - } - /* Check for revocation status here */ - } - - /* Performance optimization: if the content is a memory BIO then - * store its contents in a temporary read only memory BIO. This - * avoids potentially large numbers of slow copies of data which will - * occur when reading from a read write memory BIO when signatures - * are calculated. - */ - - if (indata && (BIO_method_type(indata) == BIO_TYPE_MEM)) - { - char *ptr; - long len; - len = BIO_get_mem_data(indata, &ptr); - tmpin = BIO_new_mem_buf(ptr, len); - if (tmpin == NULL) - { - PKCS7err(PKCS7_F_PKCS7_VERIFY,ERR_R_MALLOC_FAILURE); - return 0; - } - } - else - tmpin = indata; - - - if (!(p7bio=PKCS7_dataInit(p7,tmpin))) - goto err; - - if(flags & PKCS7_TEXT) { - if(!(tmpout = BIO_new(BIO_s_mem()))) { - PKCS7err(PKCS7_F_PKCS7_VERIFY,ERR_R_MALLOC_FAILURE); - goto err; - } - BIO_set_mem_eof_return(tmpout, 0); - } else tmpout = out; - - /* We now have to 'read' from p7bio to calculate digests etc. */ - for (;;) - { - i=BIO_read(p7bio,buf,sizeof(buf)); - if (i <= 0) break; - if (tmpout) BIO_write(tmpout, buf, i); - } - - if(flags & PKCS7_TEXT) { - if(!SMIME_text(tmpout, out)) { - PKCS7err(PKCS7_F_PKCS7_VERIFY,PKCS7_R_SMIME_TEXT_ERROR); - BIO_free(tmpout); - goto err; - } - BIO_free(tmpout); - } - - /* Now Verify All Signatures */ - if (!(flags & PKCS7_NOSIGS)) - for (i=0; i<sk_PKCS7_SIGNER_INFO_num(sinfos); i++) - { - si=sk_PKCS7_SIGNER_INFO_value(sinfos,i); - signer = sk_X509_value (signers, i); - j=PKCS7_signatureVerify(p7bio,p7,si, signer); - if (j <= 0) { - PKCS7err(PKCS7_F_PKCS7_VERIFY,PKCS7_R_SIGNATURE_FAILURE); - goto err; - } - } - - ret = 1; - - err: - - if (tmpin == indata) - { - if (indata) BIO_pop(p7bio); - } - BIO_free_all(p7bio); - - sk_X509_free(signers); - - return ret; + sinfos = PKCS7_get_signer_info(p7); + + if (!sinfos || !sk_PKCS7_SIGNER_INFO_num(sinfos)) { + PKCS7err(PKCS7_F_PKCS7_VERIFY, PKCS7_R_NO_SIGNATURES_ON_DATA); + return 0; + } + + signers = PKCS7_get0_signers(p7, certs, flags); + + if (!signers) + return 0; + + /* Now verify the certificates */ + + if (!(flags & PKCS7_NOVERIFY)) + for (k = 0; k < sk_X509_num(signers); k++) { + signer = sk_X509_value(signers, k); + if (!(flags & PKCS7_NOCHAIN)) { + if (!X509_STORE_CTX_init(&cert_ctx, store, signer, + p7->d.sign->cert)) { + PKCS7err(PKCS7_F_PKCS7_VERIFY, ERR_R_X509_LIB); + sk_X509_free(signers); + return 0; + } + X509_STORE_CTX_set_default(&cert_ctx, "smime_sign"); + } else if (!X509_STORE_CTX_init(&cert_ctx, store, signer, NULL)) { + PKCS7err(PKCS7_F_PKCS7_VERIFY, ERR_R_X509_LIB); + sk_X509_free(signers); + return 0; + } + if (!(flags & PKCS7_NOCRL)) + X509_STORE_CTX_set0_crls(&cert_ctx, p7->d.sign->crl); + i = X509_verify_cert(&cert_ctx); + if (i <= 0) + j = X509_STORE_CTX_get_error(&cert_ctx); + X509_STORE_CTX_cleanup(&cert_ctx); + if (i <= 0) { + PKCS7err(PKCS7_F_PKCS7_VERIFY, + PKCS7_R_CERTIFICATE_VERIFY_ERROR); + ERR_add_error_data(2, "Verify error:", + X509_verify_cert_error_string(j)); + sk_X509_free(signers); + return 0; + } + /* Check for revocation status here */ + } + + /* + * Performance optimization: if the content is a memory BIO then store + * its contents in a temporary read only memory BIO. This avoids + * potentially large numbers of slow copies of data which will occur when + * reading from a read write memory BIO when signatures are calculated. + */ + + if (indata && (BIO_method_type(indata) == BIO_TYPE_MEM)) { + char *ptr; + long len; + len = BIO_get_mem_data(indata, &ptr); + tmpin = BIO_new_mem_buf(ptr, len); + if (tmpin == NULL) { + PKCS7err(PKCS7_F_PKCS7_VERIFY, ERR_R_MALLOC_FAILURE); + return 0; + } + } else + tmpin = indata; + + if (!(p7bio = PKCS7_dataInit(p7, tmpin))) + goto err; + + if (flags & PKCS7_TEXT) { + if (!(tmpout = BIO_new(BIO_s_mem()))) { + PKCS7err(PKCS7_F_PKCS7_VERIFY, ERR_R_MALLOC_FAILURE); + goto err; + } + BIO_set_mem_eof_return(tmpout, 0); + } else + tmpout = out; + + /* We now have to 'read' from p7bio to calculate digests etc. */ + for (;;) { + i = BIO_read(p7bio, buf, sizeof(buf)); + if (i <= 0) + break; + if (tmpout) + BIO_write(tmpout, buf, i); + } + + if (flags & PKCS7_TEXT) { + if (!SMIME_text(tmpout, out)) { + PKCS7err(PKCS7_F_PKCS7_VERIFY, PKCS7_R_SMIME_TEXT_ERROR); + BIO_free(tmpout); + goto err; + } + BIO_free(tmpout); + } + + /* Now Verify All Signatures */ + if (!(flags & PKCS7_NOSIGS)) + for (i = 0; i < sk_PKCS7_SIGNER_INFO_num(sinfos); i++) { + si = sk_PKCS7_SIGNER_INFO_value(sinfos, i); + signer = sk_X509_value(signers, i); + j = PKCS7_signatureVerify(p7bio, p7, si, signer); + if (j <= 0) { + PKCS7err(PKCS7_F_PKCS7_VERIFY, PKCS7_R_SIGNATURE_FAILURE); + goto err; + } + } + + ret = 1; + + err: + + if (tmpin == indata) { + if (indata) + BIO_pop(p7bio); + } + BIO_free_all(p7bio); + + sk_X509_free(signers); + + return ret; } -STACK_OF(X509) *PKCS7_get0_signers(PKCS7 *p7, STACK_OF(X509) *certs, int flags) +STACK_OF(X509) *PKCS7_get0_signers(PKCS7 *p7, STACK_OF(X509) *certs, + int flags) { - STACK_OF(X509) *signers; - STACK_OF(PKCS7_SIGNER_INFO) *sinfos; - PKCS7_SIGNER_INFO *si; - PKCS7_ISSUER_AND_SERIAL *ias; - X509 *signer; - int i; - - if(!p7) { - PKCS7err(PKCS7_F_PKCS7_GET0_SIGNERS,PKCS7_R_INVALID_NULL_POINTER); - return NULL; - } - - if(!PKCS7_type_is_signed(p7)) { - PKCS7err(PKCS7_F_PKCS7_GET0_SIGNERS,PKCS7_R_WRONG_CONTENT_TYPE); - return NULL; - } - - /* Collect all the signers together */ - - sinfos = PKCS7_get_signer_info(p7); - - if(sk_PKCS7_SIGNER_INFO_num(sinfos) <= 0) { - PKCS7err(PKCS7_F_PKCS7_GET0_SIGNERS,PKCS7_R_NO_SIGNERS); - return 0; - } - - if(!(signers = sk_X509_new_null())) { - PKCS7err(PKCS7_F_PKCS7_GET0_SIGNERS,ERR_R_MALLOC_FAILURE); - return NULL; - } - - for (i = 0; i < sk_PKCS7_SIGNER_INFO_num(sinfos); i++) - { - si = sk_PKCS7_SIGNER_INFO_value(sinfos, i); - ias = si->issuer_and_serial; - signer = NULL; - /* If any certificates passed they take priority */ - if (certs) signer = X509_find_by_issuer_and_serial (certs, - ias->issuer, ias->serial); - if (!signer && !(flags & PKCS7_NOINTERN) - && p7->d.sign->cert) signer = - X509_find_by_issuer_and_serial (p7->d.sign->cert, - ias->issuer, ias->serial); - if (!signer) { - PKCS7err(PKCS7_F_PKCS7_GET0_SIGNERS,PKCS7_R_SIGNER_CERTIFICATE_NOT_FOUND); - sk_X509_free(signers); - return 0; - } - - if (!sk_X509_push(signers, signer)) { - sk_X509_free(signers); - return NULL; - } - } - return signers; + STACK_OF(X509) *signers; + STACK_OF(PKCS7_SIGNER_INFO) *sinfos; + PKCS7_SIGNER_INFO *si; + PKCS7_ISSUER_AND_SERIAL *ias; + X509 *signer; + int i; + + if (!p7) { + PKCS7err(PKCS7_F_PKCS7_GET0_SIGNERS, PKCS7_R_INVALID_NULL_POINTER); + return NULL; + } + + if (!PKCS7_type_is_signed(p7)) { + PKCS7err(PKCS7_F_PKCS7_GET0_SIGNERS, PKCS7_R_WRONG_CONTENT_TYPE); + return NULL; + } + + /* Collect all the signers together */ + + sinfos = PKCS7_get_signer_info(p7); + + if (sk_PKCS7_SIGNER_INFO_num(sinfos) <= 0) { + PKCS7err(PKCS7_F_PKCS7_GET0_SIGNERS, PKCS7_R_NO_SIGNERS); + return 0; + } + + if (!(signers = sk_X509_new_null())) { + PKCS7err(PKCS7_F_PKCS7_GET0_SIGNERS, ERR_R_MALLOC_FAILURE); + return NULL; + } + + for (i = 0; i < sk_PKCS7_SIGNER_INFO_num(sinfos); i++) { + si = sk_PKCS7_SIGNER_INFO_value(sinfos, i); + ias = si->issuer_and_serial; + signer = NULL; + /* If any certificates passed they take priority */ + if (certs) + signer = X509_find_by_issuer_and_serial(certs, + ias->issuer, ias->serial); + if (!signer && !(flags & PKCS7_NOINTERN) + && p7->d.sign->cert) + signer = + X509_find_by_issuer_and_serial(p7->d.sign->cert, + ias->issuer, ias->serial); + if (!signer) { + PKCS7err(PKCS7_F_PKCS7_GET0_SIGNERS, + PKCS7_R_SIGNER_CERTIFICATE_NOT_FOUND); + sk_X509_free(signers); + return 0; + } + + if (!sk_X509_push(signers, signer)) { + sk_X509_free(signers); + return NULL; + } + } + return signers; } - /* Build a complete PKCS#7 enveloped data */ PKCS7 *PKCS7_encrypt(STACK_OF(X509) *certs, BIO *in, const EVP_CIPHER *cipher, - int flags) + int flags) { - PKCS7 *p7; - BIO *p7bio = NULL; - int i; - X509 *x509; - if(!(p7 = PKCS7_new())) { - PKCS7err(PKCS7_F_PKCS7_ENCRYPT,ERR_R_MALLOC_FAILURE); - return NULL; - } - - if (!PKCS7_set_type(p7, NID_pkcs7_enveloped)) - goto err; - if (!PKCS7_set_cipher(p7, cipher)) { - PKCS7err(PKCS7_F_PKCS7_ENCRYPT,PKCS7_R_ERROR_SETTING_CIPHER); - goto err; - } - - for(i = 0; i < sk_X509_num(certs); i++) { - x509 = sk_X509_value(certs, i); - if(!PKCS7_add_recipient(p7, x509)) { - PKCS7err(PKCS7_F_PKCS7_ENCRYPT, - PKCS7_R_ERROR_ADDING_RECIPIENT); - goto err; - } - } - - if (flags & PKCS7_STREAM) - return p7; - - if (PKCS7_final(p7, in, flags)) - return p7; - - err: - - BIO_free_all(p7bio); - PKCS7_free(p7); - return NULL; + PKCS7 *p7; + BIO *p7bio = NULL; + int i; + X509 *x509; + if (!(p7 = PKCS7_new())) { + PKCS7err(PKCS7_F_PKCS7_ENCRYPT, ERR_R_MALLOC_FAILURE); + return NULL; + } + + if (!PKCS7_set_type(p7, NID_pkcs7_enveloped)) + goto err; + if (!PKCS7_set_cipher(p7, cipher)) { + PKCS7err(PKCS7_F_PKCS7_ENCRYPT, PKCS7_R_ERROR_SETTING_CIPHER); + goto err; + } + + for (i = 0; i < sk_X509_num(certs); i++) { + x509 = sk_X509_value(certs, i); + if (!PKCS7_add_recipient(p7, x509)) { + PKCS7err(PKCS7_F_PKCS7_ENCRYPT, PKCS7_R_ERROR_ADDING_RECIPIENT); + goto err; + } + } + + if (flags & PKCS7_STREAM) + return p7; + + if (PKCS7_final(p7, in, flags)) + return p7; + + err: + + BIO_free_all(p7bio); + PKCS7_free(p7); + return NULL; } int PKCS7_decrypt(PKCS7 *p7, EVP_PKEY *pkey, X509 *cert, BIO *data, int flags) { - BIO *tmpmem; - int ret, i; - char buf[4096]; - - if(!p7) { - PKCS7err(PKCS7_F_PKCS7_DECRYPT,PKCS7_R_INVALID_NULL_POINTER); - return 0; - } - - if(!PKCS7_type_is_enveloped(p7)) { - PKCS7err(PKCS7_F_PKCS7_DECRYPT,PKCS7_R_WRONG_CONTENT_TYPE); - return 0; - } - - if(cert && !X509_check_private_key(cert, pkey)) { - PKCS7err(PKCS7_F_PKCS7_DECRYPT, - PKCS7_R_PRIVATE_KEY_DOES_NOT_MATCH_CERTIFICATE); - return 0; - } - - if(!(tmpmem = PKCS7_dataDecode(p7, pkey, NULL, cert))) { - PKCS7err(PKCS7_F_PKCS7_DECRYPT, PKCS7_R_DECRYPT_ERROR); - return 0; - } - - if (flags & PKCS7_TEXT) { - BIO *tmpbuf, *bread; - /* Encrypt BIOs can't do BIO_gets() so add a buffer BIO */ - if(!(tmpbuf = BIO_new(BIO_f_buffer()))) { - PKCS7err(PKCS7_F_PKCS7_DECRYPT, ERR_R_MALLOC_FAILURE); - BIO_free_all(tmpmem); - return 0; - } - if(!(bread = BIO_push(tmpbuf, tmpmem))) { - PKCS7err(PKCS7_F_PKCS7_DECRYPT, ERR_R_MALLOC_FAILURE); - BIO_free_all(tmpbuf); - BIO_free_all(tmpmem); - return 0; - } - ret = SMIME_text(bread, data); - if (ret > 0 && BIO_method_type(tmpmem) == BIO_TYPE_CIPHER) - { - if (!BIO_get_cipher_status(tmpmem)) - ret = 0; - } - BIO_free_all(bread); - return ret; - } else { - for(;;) { - i = BIO_read(tmpmem, buf, sizeof(buf)); - if(i <= 0) - { - ret = 1; - if (BIO_method_type(tmpmem) == BIO_TYPE_CIPHER) - { - if (!BIO_get_cipher_status(tmpmem)) - ret = 0; - } - - break; - } - if (BIO_write(data, buf, i) != i) - { - ret = 0; - break; - } - } - BIO_free_all(tmpmem); - return ret; - } + BIO *tmpmem; + int ret, i; + char buf[4096]; + + if (!p7) { + PKCS7err(PKCS7_F_PKCS7_DECRYPT, PKCS7_R_INVALID_NULL_POINTER); + return 0; + } + + if (!PKCS7_type_is_enveloped(p7)) { + PKCS7err(PKCS7_F_PKCS7_DECRYPT, PKCS7_R_WRONG_CONTENT_TYPE); + return 0; + } + + if (cert && !X509_check_private_key(cert, pkey)) { + PKCS7err(PKCS7_F_PKCS7_DECRYPT, + PKCS7_R_PRIVATE_KEY_DOES_NOT_MATCH_CERTIFICATE); + return 0; + } + + if (!(tmpmem = PKCS7_dataDecode(p7, pkey, NULL, cert))) { + PKCS7err(PKCS7_F_PKCS7_DECRYPT, PKCS7_R_DECRYPT_ERROR); + return 0; + } + + if (flags & PKCS7_TEXT) { + BIO *tmpbuf, *bread; + /* Encrypt BIOs can't do BIO_gets() so add a buffer BIO */ + if (!(tmpbuf = BIO_new(BIO_f_buffer()))) { + PKCS7err(PKCS7_F_PKCS7_DECRYPT, ERR_R_MALLOC_FAILURE); + BIO_free_all(tmpmem); + return 0; + } + if (!(bread = BIO_push(tmpbuf, tmpmem))) { + PKCS7err(PKCS7_F_PKCS7_DECRYPT, ERR_R_MALLOC_FAILURE); + BIO_free_all(tmpbuf); + BIO_free_all(tmpmem); + return 0; + } + ret = SMIME_text(bread, data); + if (ret > 0 && BIO_method_type(tmpmem) == BIO_TYPE_CIPHER) { + if (!BIO_get_cipher_status(tmpmem)) + ret = 0; + } + BIO_free_all(bread); + return ret; + } else { + for (;;) { + i = BIO_read(tmpmem, buf, sizeof(buf)); + if (i <= 0) { + ret = 1; + if (BIO_method_type(tmpmem) == BIO_TYPE_CIPHER) { + if (!BIO_get_cipher_status(tmpmem)) + ret = 0; + } + + break; + } + if (BIO_write(data, buf, i) != i) { + ret = 0; + break; + } + } + BIO_free_all(tmpmem); + return ret; + } } |