3 files changed, 179 insertions, 0 deletions
diff --git a/src/libstrongswan/credentials/containers/container.c b/src/libstrongswan/credentials/containers/container.c
new file mode 100644
index 000000000..d1e67b21b
--- /dev/null
+++ b/src/libstrongswan/credentials/containers/container.c
@@ -0,0 +1,23 @@
+/*
+ * 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 "container.h"
+
+ENUM(container_type_names, CONTAINER_PKCS7, CONTAINER_PKCS7_ENVELOPED_DATA,
+	"PKCS7",
+	"PKCS7_DATA",
+	"PKCS7_SIGNED_DATA",
+	"PKCS7_ENVELOPED_DATA",
+);
diff --git a/src/libstrongswan/credentials/containers/container.h b/src/libstrongswan/credentials/containers/container.h
new file mode 100644
index 000000000..fc5c09041
--- /dev/null
+++ b/src/libstrongswan/credentials/containers/container.h
@@ -0,0 +1,93 @@
+/*
+ * 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.
+ */
+
+/**
+ * @defgroup container container
+ * @{ @ingroup containers
+ */
+
+#ifndef CONTAINER_H_
+#define CONTAINER_H_
+
+typedef struct container_t container_t;
+typedef enum container_type_t container_type_t;
+
+#include <utils/chunk.h>
+#include <collections/enumerator.h>
+
+/**
+ * Type of the container.
+ */
+enum container_type_t {
+	/** Any kind of PKCS7/CMS container */
+	CONTAINER_PKCS7,
+	/** PKCS7/CMS plain "data" */
+	CONTAINER_PKCS7_DATA,
+	/** PKCS7/CMS "signed-data" */
+	CONTAINER_PKCS7_SIGNED_DATA,
+	/** PKCS7/CMS "enveloped-data" */
+	CONTAINER_PKCS7_ENVELOPED_DATA,
+};
+
+/**
+ * Enum names for container_type_t
+ */
+extern enum_name_t *container_type_names;
+
+/**
+ * Generic interface for cryptographic containers.
+ */
+struct container_t {
+
+	/**
+	 * Get the type of the container.
+	 *
+	 * @return		container type
+	 */
+	container_type_t (*get_type)(container_t *this);
+
+	/**
+	 * Create an enumerator over trustchains for valid container signatures.
+	 *
+	 * @return		enumerator over auth_cfg_t*
+	 */
+	enumerator_t* (*create_signature_enumerator)(container_t *this);
+
+	/**
+	 * Get signed/decrypted data wrapped in this container.
+	 *
+	 * This function does not verify any associated signatures, use
+	 * create_signature_enumerator() to verify them.
+	 *
+	 * @param data	allocated data wrapped in this container
+	 * @return		TRUE if data decrypted successfully
+	 */
+	bool (*get_data)(container_t *this, chunk_t *data);
+
+	/**
+	 * Get the encoding of the full signed/encrypted container.
+	 *
+	 * @param data	allocated container encoding
+	 * @return		TRUE if encodign successful
+	 */
+	bool (*get_encoding)(container_t *this, chunk_t *encoding);
+
+	/**
+	 * Destroy a container_t.
+	 */
+	void (*destroy)(container_t *this);
+};
+
+#endif /** CONTAINER_H_ @}*/
diff --git a/src/libstrongswan/credentials/containers/pkcs7.h b/src/libstrongswan/credentials/containers/pkcs7.h
new file mode 100644
index 000000000..d42d82b0b
--- /dev/null
+++ b/src/libstrongswan/credentials/containers/pkcs7.h
@@ -0,0 +1,63 @@
+/*
+ * 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.
+ */
+
+/**
+ * @defgroup pkcs7 pkcs7
+ * @{ @ingroup containers
+ */
+
+#ifndef PKCS7_H_
+#define PKCS7_H_
+
+#include <credentials/containers/container.h>
+
+typedef struct pkcs7_t pkcs7_t;
+
+/**
+ * PKCS#7/CMS container type.
+ */
+struct pkcs7_t {
+
+	/**
+	 * Implements container_t.
+	 */
+	container_t container;
+
+	/**
+	 * Get an authenticated PKCS#9 attribute from PKCS#7 signerInfo.
+	 *
+	 * To select the signerInfo structure to get the attribute from, pass
+	 * the enumerator position from container_t.create_signature_enumerator().
+	 *
+	 * The attribute returned does not contain type information and must be
+	 * freed after use.
+	 *
+	 * @param oid			OID from the attribute to get
+	 * @param enumerator	enumerator to select signerInfo
+	 * @param value			chunk receiving attribute value, allocated
+	 * @return				TRUE if attribute found
+	 */
+	bool (*get_attribute)(pkcs7_t *this, int oid, enumerator_t *enumerator,
+						  chunk_t *value);
+
+	/**
+	 * Create an enumerator over attached certificates.
+	 *
+	 * @return				enumerator over certificate_t
+	 */
+	enumerator_t* (*create_cert_enumerator)(pkcs7_t *this);
+};
+
+#endif /** PKCS7_H_ @}*/