From 31366290fcfbb7b51332e41755ba3f0c4b01084f Mon Sep 17 00:00:00 2001
From: Stef Walter <stef@memberwebs.com>
Date: Sat, 28 Apr 2007 22:39:24 +0000
Subject: A complete but slow implementation for certificate listing.

---
 ckcapi-cert.c | 86 ++++++++++++++++++++++++++++++++++++++---------------------
 1 file changed, 55 insertions(+), 31 deletions(-)

(limited to 'ckcapi-cert.c')

diff --git a/ckcapi-cert.c b/ckcapi-cert.c
index 0605ef9..672e189 100644
--- a/ckcapi-cert.c
+++ b/ckcapi-cert.c
@@ -13,15 +13,33 @@
 #define CERT_KEY_IDENTIFIER_PROP_ID	20
 #endif 
 
+#define USE_ENCODINGS	(X509_ASN_ENCODING | PKCS_7_ASN_ENCODING)
+
 typedef struct _CertObject
 {
 	CkCapiObject obj;
 	const char* store;
-	BYTE* key_id;
-	DWORD key_id_len;
+
+	/* Together these can uniquely identify a certificate */
+	CRYPT_INTEGER_BLOB serial;
+	CERT_NAME_BLOB issuer;
+
+	/* 
+	 * This must stay together. It comprises a unique 
+	 * key, together with the data that runs off the end.
+	 */
+	int otype;
+	BYTE cert_data[1];
 }
 CertObject;
 
+typedef struct _CertUnique
+{
+	int otype;
+	BYTE key[1];
+}
+CertUnique;
+
 static CK_RV
 copy_static_data(CK_VOID_PTR val, CK_ULONG_PTR len, 
 				 CK_VOID_PTR data, DWORD cb)
@@ -364,8 +382,8 @@ cert_load(CkCapiObject* obj, CkCapiObjectData* objdata)
 {
 	CertObject* cobj = (CertObject*)obj;
 	HCERTSTORE store;
+	CERT_INFO info;
 	PCCERT_CONTEXT cert;
-	CRYPT_HASH_BLOB blob;
 
 	ASSERT(cobj);
 	ASSERT(objdata);
@@ -375,13 +393,17 @@ cert_load(CkCapiObject* obj, CkCapiObjectData* objdata)
 	if(!store)
 		return ckcapi_winerr_to_ckr(GetLastError());
 
-	ASSERT(cobj->key_id);
-	ASSERT(cobj->key_id_len);
-	blob.pbData = cobj->key_id;
-	blob.cbData = cobj->key_id_len;
+	ASSERT(cobj->issuer.pbData);
+	ASSERT(cobj->issuer.cbData);
+	ASSERT(cobj->serial.pbData);
+	ASSERT(cobj->serial.cbData);
+
+	/* Setup our search */
+	memset(&info, 0, sizeof(info));
+	memcpy(&info.SerialNumber, &cobj->serial, sizeof(info.SerialNumber));
+	memcpy(&info.Issuer, &cobj->issuer, sizeof(info.Issuer));
 
-	cert = CertFindCertificateInStore(store, X509_ASN_ENCODING | PKCS_7_ASN_ENCODING,
-									  0, CERT_FIND_KEY_IDENTIFIER, &blob, NULL);
+	cert = CertGetSubjectCertificateFromStore(store, USE_ENCODINGS, &info);
 
 	CertCloseStore(store, 0);
 
@@ -422,36 +444,38 @@ register_cert_object(CkCapiSession* sess, const char* store, PCCERT_CONTEXT cert
 {
 	CertObject* cobj;
 	CK_RV ret;
-	DWORD len;
-	
-	if(!CertGetCertificateContextProperty(cert, CERT_KEY_IDENTIFIER_PROP_ID, NULL, &len))
-	{
-		DBG(("cannot get certificate key identifier: %d", GetLastError()));
-		return CKR_ATTRIBUTE_TYPE_INVALID;
-	}
+	size_t len;
+
+	/* We save the Issuer and SerialNumber for identification later */
+	len = cert->pCertInfo->SerialNumber.cbData + 
+		  cert->pCertInfo->Issuer.cbData;
+
+	/* Add one in case null termination is needed */
+	len++;
 
 	cobj = calloc(sizeof(CertObject) + len, 1);
 	if(!cobj)
 		return CKR_HOST_MEMORY;
 
-	/* Store keyid in allocated area after CertObject */
-	cobj->key_id = (BYTE*)(cobj + 1);
-	cobj->key_id_len = len;
-
-	if(!CertGetCertificateContextProperty(cert, CERT_KEY_IDENTIFIER_PROP_ID, 
-										  cobj->key_id, &(cobj->key_id_len)))
-	{
-		DBG(("cannot read certificate key identifier: %d", GetLastError()));
-		free(cobj);
-		return CKR_ATTRIBUTE_TYPE_INVALID;
-	}
-
+	cobj->otype = OBJECT_CERT;
 	cobj->store = store;
+
 	cobj->obj.id = 0;
-	cobj->obj.unique_key = cobj->key_id;
-	cobj->obj.unique_len = cobj->key_id_len;
+	cobj->obj.unique_key = UNIQUE_KEY_AT(cobj, otype);
+	cobj->obj.unique_len = UNIQUE_KEY_VAR_LEN(cobj, otype, cert_data, len);
 	cobj->obj.obj_funcs = cert_object_vtable;
-	cobj->obj.data_funcs = cert_objdata_vtable;
+
+	/* Copy Issuer data in */
+	cobj->issuer.cbData = cert->pCertInfo->Issuer.cbData;
+	cobj->issuer.pbData = cobj->cert_data;
+	memcpy(cobj->issuer.pbData, cert->pCertInfo->Issuer.pbData,
+		   cobj->issuer.cbData);
+
+	/* Copy Serial Number data in */
+	cobj->serial.cbData = cert->pCertInfo->SerialNumber.cbData;
+	cobj->serial.pbData = cobj->cert_data + cobj->issuer.cbData;
+	memcpy(cobj->serial.pbData, cert->pCertInfo->SerialNumber.pbData,
+		   cobj->serial.cbData);
 	
 	ret = ckcapi_object_register(sess, &(cobj->obj));
 	if(ret != CKR_OK)
-- 
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