Make X509_ATTRIBUTE opaque.

[openssl.git] / crypto / x509 / x_attrib.c

diff --git a/crypto/x509/x_attrib.c b/crypto/x509/x_attrib.c
new file mode 100644 (file)
index 0000000..335a85b
--- /dev/null
+++ b/crypto/x509/x_attrib.c
@@ -0,0 +1,125 @@
+/* crypto/asn1/x_attrib.c */
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.]
+ */
+
+#include <stdio.h>
+#include "cryptlib.h"
+#include <openssl/objects.h>
+#include <openssl/asn1t.h>
+#include <openssl/x509.h>
+#include "x509_lcl.h"
+
+/*-
+ * X509_ATTRIBUTE: this has the following form:
+ *
+ * typedef struct x509_attributes_st
+ *      {
+ *      ASN1_OBJECT *object;
+ *      int single;
+ *      union   {
+ *              char            *ptr;
+ *              STACK_OF(ASN1_TYPE) *set;
+ *              ASN1_TYPE       *single;
+ *              } value;
+ *      } X509_ATTRIBUTE;
+ *
+ * this needs some extra thought because the CHOICE type is
+ * merged with the main structure and because the value can
+ * be anything at all we *must* try the SET OF first because
+ * the ASN1_ANY type will swallow anything including the whole
+ * SET OF structure.
+ */
+
+ASN1_CHOICE(X509_ATTRIBUTE_SET) = {
+        ASN1_SET_OF(X509_ATTRIBUTE, value.set, ASN1_ANY),
+        ASN1_SIMPLE(X509_ATTRIBUTE, value.single, ASN1_ANY)
+} ASN1_CHOICE_END_selector(X509_ATTRIBUTE, X509_ATTRIBUTE_SET, single)
+
+ASN1_SEQUENCE(X509_ATTRIBUTE) = {
+        ASN1_SIMPLE(X509_ATTRIBUTE, object, ASN1_OBJECT),
+        /* CHOICE type merged with parent */
+        ASN1_EX_COMBINE(0, 0, X509_ATTRIBUTE_SET)
+} ASN1_SEQUENCE_END(X509_ATTRIBUTE)
+
+IMPLEMENT_ASN1_FUNCTIONS(X509_ATTRIBUTE)
+IMPLEMENT_ASN1_DUP_FUNCTION(X509_ATTRIBUTE)
+
+X509_ATTRIBUTE *X509_ATTRIBUTE_create(int nid, int atrtype, void *value)
+{
+    X509_ATTRIBUTE *ret = NULL;
+    ASN1_TYPE *val = NULL;
+
+    if ((ret = X509_ATTRIBUTE_new()) == NULL)
+        return (NULL);
+    ret->object = OBJ_nid2obj(nid);
+    ret->single = 0;
+    if ((ret->value.set = sk_ASN1_TYPE_new_null()) == NULL)
+        goto err;
+    if ((val = ASN1_TYPE_new()) == NULL)
+        goto err;
+    if (!sk_ASN1_TYPE_push(ret->value.set, val))
+        goto err;
+
+    ASN1_TYPE_set(val, atrtype, value);
+    return (ret);
+ err:
+    if (ret != NULL)
+        X509_ATTRIBUTE_free(ret);
+    if (val != NULL)
+        ASN1_TYPE_free(val);
+    return (NULL);
+}