Imported Upstream version 5.0.2

1 files changed, 156 insertions, 0 deletions

diff --git a/src/libstrongswan/plugins/pkcs7/pkcs7_data.c b/src/libstrongswan/plugins/pkcs7/pkcs7_data.c
new file mode 100644
index 000000000..06816095c
--- /dev/null
+++ b/src/libstrongswan/plugins/pkcs7/pkcs7_data.c
@@ -0,0 +1,156 @@
+/*
+ * Copyright (C) 2012 Martin Willi
+ * Copyright (C) 2012 revosec AG
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * for more details.
+ */
+
+#include "pkcs7_data.h"
+
+#include <asn1/asn1.h>
+#include <asn1/oid.h>
+
+typedef struct private_pkcs7_data_t private_pkcs7_data_t;
+
+/**
+ * Private data of a PKCS#7 signed-data container.
+ */
+struct private_pkcs7_data_t {
+
+	/**
+	 * Implements pkcs7_t.
+	 */
+	pkcs7_t public;
+
+	/**
+	 * Encoded data
+	 */
+	chunk_t content;
+
+	/**
+	 * Encoded PKCS#7 data
+	 */
+	chunk_t encoding;
+};
+
+METHOD(container_t, get_type, container_type_t,
+	private_pkcs7_data_t *this)
+{
+	return CONTAINER_PKCS7_DATA;
+}
+
+METHOD(container_t, create_signature_enumerator, enumerator_t*,
+	private_pkcs7_data_t *this)
+{
+	return enumerator_create_empty();
+}
+
+METHOD(container_t, get_data, bool,
+	private_pkcs7_data_t *this, chunk_t *data)
+{
+	chunk_t chunk;
+
+	chunk = this->content;
+	if (asn1_unwrap(&chunk, &chunk) == ASN1_OCTET_STRING)
+	{
+		*data = chunk_clone(chunk);
+		return TRUE;
+	}
+	return FALSE;
+}
+
+METHOD(container_t, get_encoding, bool,
+	private_pkcs7_data_t *this, chunk_t *data)
+{
+	*data = chunk_clone(this->encoding);
+	return TRUE;
+}
+
+METHOD(container_t, destroy, void,
+	private_pkcs7_data_t *this)
+{
+	free(this->content.ptr);
+	free(this->encoding.ptr);
+	free(this);
+}
+
+/**
+ * Create an empty container
+ */
+static private_pkcs7_data_t* create_empty()
+{
+	private_pkcs7_data_t *this;
+
+	INIT(this,
+		.public = {
+			.container = {
+				.get_type = _get_type,
+				.create_signature_enumerator = _create_signature_enumerator,
+				.get_data = _get_data,
+				.get_encoding = _get_encoding,
+				.destroy = _destroy,
+			},
+			.get_attribute = (void*)return_false,
+			.create_cert_enumerator = (void*)enumerator_create_empty,
+		},
+	);
+
+	return this;
+}
+
+/**
+ * See header.
+ */
+pkcs7_t *pkcs7_data_load(chunk_t encoding, chunk_t content)
+{
+	private_pkcs7_data_t *this = create_empty();
+
+	this->encoding = chunk_clone(encoding);
+	this->content = chunk_clone(content);
+
+	return &this->public;
+}
+
+/**
+ * See header.
+ */
+pkcs7_t *pkcs7_data_gen(container_type_t type, va_list args)
+{
+	private_pkcs7_data_t *this;
+	chunk_t blob = chunk_empty;
+
+	while (TRUE)
+	{
+		switch (va_arg(args, builder_part_t))
+		{
+			case BUILD_BLOB:
+				blob = va_arg(args, chunk_t);
+				continue;
+			case BUILD_END:
+				break;
+			default:
+				return NULL;
+		}
+		break;
+	}
+
+	if (blob.len)
+	{
+		this = create_empty();
+
+		this->content = asn1_wrap(ASN1_OCTET_STRING, "c", blob);
+		this->encoding = asn1_wrap(ASN1_SEQUENCE, "mm",
+							asn1_build_known_oid(OID_PKCS7_DATA),
+							asn1_wrap(ASN1_CONTEXT_C_0, "c", this->content));
+		return &this->public;
+	}
+	return NULL;
+}