[331] | 1 | /*
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| 2 | * Copyright 1999-2016 The OpenSSL Project Authors. All Rights Reserved.
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| 3 | *
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| 4 | * Licensed under the OpenSSL license (the "License"). You may not use
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| 5 | * this file except in compliance with the License. You can obtain a copy
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| 6 | * in the file LICENSE in the source distribution or at
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| 7 | * https://www.openssl.org/source/license.html
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| 8 | */
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| 9 |
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| 10 | #include <stdio.h>
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| 11 | #include <stdlib.h>
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| 12 | #include <openssl/bio.h>
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| 13 | #include <openssl/asn1.h>
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| 14 | #include <openssl/asn1t.h>
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| 15 | #include <openssl/pem.h>
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| 16 | #include <openssl/pkcs7.h>
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| 17 | #include <openssl/x509.h>
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| 18 | #include <openssl/err.h>
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| 19 |
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| 20 | int PKCS7_add_attrib_smimecap(PKCS7_SIGNER_INFO *si,
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| 21 | STACK_OF(X509_ALGOR) *cap)
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| 22 | {
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| 23 | ASN1_STRING *seq;
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| 24 |
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| 25 | if ((seq = ASN1_STRING_new()) == NULL) {
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| 26 | PKCS7err(PKCS7_F_PKCS7_ADD_ATTRIB_SMIMECAP, ERR_R_MALLOC_FAILURE);
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| 27 | return 0;
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| 28 | }
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| 29 | seq->length = ASN1_item_i2d((ASN1_VALUE *)cap, &seq->data,
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| 30 | ASN1_ITEM_rptr(X509_ALGORS));
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| 31 | return PKCS7_add_signed_attribute(si, NID_SMIMECapabilities,
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| 32 | V_ASN1_SEQUENCE, seq);
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| 33 | }
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| 34 |
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| 35 | STACK_OF(X509_ALGOR) *PKCS7_get_smimecap(PKCS7_SIGNER_INFO *si)
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| 36 | {
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| 37 | ASN1_TYPE *cap;
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| 38 | const unsigned char *p;
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| 39 |
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| 40 | cap = PKCS7_get_signed_attribute(si, NID_SMIMECapabilities);
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| 41 | if (cap == NULL || (cap->type != V_ASN1_SEQUENCE))
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| 42 | return NULL;
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| 43 | p = cap->value.sequence->data;
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| 44 | return (STACK_OF(X509_ALGOR) *)
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| 45 | ASN1_item_d2i(NULL, &p, cap->value.sequence->length,
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| 46 | ASN1_ITEM_rptr(X509_ALGORS));
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| 47 | }
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| 48 |
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| 49 | /* Basic smime-capabilities OID and optional integer arg */
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| 50 | int PKCS7_simple_smimecap(STACK_OF(X509_ALGOR) *sk, int nid, int arg)
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| 51 | {
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| 52 | ASN1_INTEGER *nbit = NULL;
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| 53 | X509_ALGOR *alg;
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| 54 |
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| 55 | if ((alg = X509_ALGOR_new()) == NULL) {
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| 56 | PKCS7err(PKCS7_F_PKCS7_SIMPLE_SMIMECAP, ERR_R_MALLOC_FAILURE);
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| 57 | return 0;
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| 58 | }
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| 59 | ASN1_OBJECT_free(alg->algorithm);
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| 60 | alg->algorithm = OBJ_nid2obj(nid);
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| 61 | if (arg > 0) {
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| 62 | if ((alg->parameter = ASN1_TYPE_new()) == NULL) {
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| 63 | goto err;
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| 64 | }
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| 65 | if ((nbit = ASN1_INTEGER_new()) == NULL) {
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| 66 | goto err;
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| 67 | }
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| 68 | if (!ASN1_INTEGER_set(nbit, arg)) {
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| 69 | goto err;
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| 70 | }
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| 71 | alg->parameter->value.integer = nbit;
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| 72 | alg->parameter->type = V_ASN1_INTEGER;
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| 73 | nbit = NULL;
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| 74 | }
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| 75 | if (!sk_X509_ALGOR_push(sk, alg)) {
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| 76 | goto err;
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| 77 | }
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| 78 | return 1;
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| 79 | err:
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| 80 | PKCS7err(PKCS7_F_PKCS7_SIMPLE_SMIMECAP, ERR_R_MALLOC_FAILURE);
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| 81 | ASN1_INTEGER_free(nbit);
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| 82 | X509_ALGOR_free(alg);
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| 83 | return 0;
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| 84 | }
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| 85 |
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| 86 | int PKCS7_add_attrib_content_type(PKCS7_SIGNER_INFO *si, ASN1_OBJECT *coid)
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| 87 | {
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| 88 | if (PKCS7_get_signed_attribute(si, NID_pkcs9_contentType))
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| 89 | return 0;
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| 90 | if (!coid)
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| 91 | coid = OBJ_nid2obj(NID_pkcs7_data);
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| 92 | return PKCS7_add_signed_attribute(si, NID_pkcs9_contentType,
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| 93 | V_ASN1_OBJECT, coid);
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| 94 | }
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| 95 |
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| 96 | int PKCS7_add0_attrib_signing_time(PKCS7_SIGNER_INFO *si, ASN1_TIME *t)
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| 97 | {
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| 98 | if (t == NULL && (t = X509_gmtime_adj(NULL, 0)) == NULL) {
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| 99 | PKCS7err(PKCS7_F_PKCS7_ADD0_ATTRIB_SIGNING_TIME,
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| 100 | ERR_R_MALLOC_FAILURE);
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| 101 | return 0;
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| 102 | }
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| 103 | return PKCS7_add_signed_attribute(si, NID_pkcs9_signingTime,
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| 104 | V_ASN1_UTCTIME, t);
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| 105 | }
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| 106 |
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| 107 | int PKCS7_add1_attrib_digest(PKCS7_SIGNER_INFO *si,
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| 108 | const unsigned char *md, int mdlen)
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| 109 | {
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| 110 | ASN1_OCTET_STRING *os;
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| 111 | os = ASN1_OCTET_STRING_new();
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| 112 | if (os == NULL)
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| 113 | return 0;
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| 114 | if (!ASN1_STRING_set(os, md, mdlen)
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| 115 | || !PKCS7_add_signed_attribute(si, NID_pkcs9_messageDigest,
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| 116 | V_ASN1_OCTET_STRING, os)) {
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| 117 | ASN1_OCTET_STRING_free(os);
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| 118 | return 0;
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| 119 | }
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| 120 | return 1;
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| 121 | }
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