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