Merge in my S/MIME library and utility.

1 files changed, 85 insertions, 0 deletions

diff --git a/crypto/pkcs7/pk7_attr.c b/crypto/pkcs7/pk7_attr.c
new file mode 100644
index 0000000000..3b9c0fe3f2
--- /dev/null
+++ b/crypto/pkcs7/pk7_attr.c
@@ -0,0 +1,85 @@
+/* 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 <stdio.h>
+#include <stdlib.h>
+#include <openssl/bio.h>
+#include <openssl/asn1.h>
+#include <openssl/pem.h>
+#include <openssl/pkcs7.h>
+#include <openssl/err.h>
+
+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;
+}