86 lines
2.3 KiB
C
86 lines
2.3 KiB
C
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/* pk7_attr.c */
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/* S/MIME code.
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* Copyright (C) 1997-8 Dr S N Henson (shenson@bigfoot.com)
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* All Rights Reserved.
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* Redistribution of this code without the authors permission is expressly
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* prohibited.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <openssl/bio.h>
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#include <openssl/asn1.h>
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#include <openssl/pem.h>
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#include <openssl/pkcs7.h>
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#include <openssl/err.h>
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int PKCS7_add_attrib_smimecap(PKCS7_SIGNER_INFO *si, STACK *cap)
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{
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ASN1_STRING *seq;
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unsigned char *p, *pp;
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int len;
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len=i2d_ASN1_SET(cap,NULL,i2d_X509_ALGOR, V_ASN1_SEQUENCE,
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V_ASN1_UNIVERSAL, IS_SEQUENCE);
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if(!(pp=(unsigned char *)Malloc(len))) {
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PKCS7err(PKCS7_F_PKCS7_ADD_ATTRIB_SMIMECAP,ERR_R_MALLOC_FAILURE);
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return 0;
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}
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p=pp;
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i2d_ASN1_SET(cap,&p,i2d_X509_ALGOR, V_ASN1_SEQUENCE,
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V_ASN1_UNIVERSAL, IS_SEQUENCE);
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if(!(seq = ASN1_STRING_new())) {
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PKCS7err(PKCS7_F_PKCS7_ADD_ATTRIB_SMIMECAP,ERR_R_MALLOC_FAILURE);
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return 0;
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}
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if(!ASN1_STRING_set (seq, pp, len)) {
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PKCS7err(PKCS7_F_PKCS7_ADD_ATTRIB_SMIMECAP,ERR_R_MALLOC_FAILURE);
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return 0;
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}
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Free (pp);
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return PKCS7_add_signed_attribute(si, NID_SMIMECapabilities,
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V_ASN1_SEQUENCE, seq);
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}
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STACK *PKCS7_get_smimecap(PKCS7_SIGNER_INFO *si)
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{
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ASN1_TYPE *cap;
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unsigned char *p;
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cap = PKCS7_get_signed_attribute(si, NID_SMIMECapabilities);
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if (!cap) return NULL;
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p = cap->value.sequence->data;
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return d2i_ASN1_SET (NULL, &p, cap->value.sequence->length,
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(char *(*)())d2i_X509_ALGOR, X509_ALGOR_free, V_ASN1_SEQUENCE,
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V_ASN1_UNIVERSAL);
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}
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/* Basic smime-capabilities OID and optional integer arg */
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int PKCS7_simple_smimecap(STACK *sk, int nid, int arg)
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{
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X509_ALGOR *alg;
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if(!(alg = X509_ALGOR_new())) {
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PKCS7err(PKCS7_F_PKCS7_SIMPLE_SMIMECAP,ERR_R_MALLOC_FAILURE);
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return 0;
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}
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ASN1_OBJECT_free(alg->algorithm);
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alg->algorithm = OBJ_nid2obj (nid);
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if (arg > 0) {
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ASN1_INTEGER *nbit;
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if(!(alg->parameter = ASN1_TYPE_new())) {
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PKCS7err(PKCS7_F_PKCS7_SIMPLE_SMIMECAP,ERR_R_MALLOC_FAILURE);
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return 0;
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}
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if(!(nbit = ASN1_INTEGER_new())) {
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PKCS7err(PKCS7_F_PKCS7_SIMPLE_SMIMECAP,ERR_R_MALLOC_FAILURE);
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return 0;
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}
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if(!ASN1_INTEGER_set (nbit, arg)) {
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PKCS7err(PKCS7_F_PKCS7_SIMPLE_SMIMECAP,ERR_R_MALLOC_FAILURE);
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return 0;
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}
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alg->parameter->value.integer = nbit;
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alg->parameter->type = V_ASN1_INTEGER;
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}
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sk_push (sk, (char *)alg);
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return 1;
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}
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