[svn-upgrade] Integrating new upstream version, strongswan (4.4.0)

1 files changed, 273 insertions, 0 deletions

diff --git a/src/libcharon/encoding/payloads/cp_payload.c b/src/libcharon/encoding/payloads/cp_payload.c
new file mode 100644
index 000000000..f0a26eee2
--- /dev/null
+++ b/src/libcharon/encoding/payloads/cp_payload.c
@@ -0,0 +1,273 @@
+/*
+ * Copyright (C) 2005-2009 Martin Willi
+ * Copyright (C) 2005 Jan Hutter
+ * Hochschule fuer Technik Rapperswil
+ *
+ * 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 <stddef.h>
+
+#include "cp_payload.h"
+
+#include <encoding/payloads/encodings.h>
+#include <utils/linked_list.h>
+
+ENUM(config_type_names, CFG_REQUEST, CFG_ACK,
+	"CFG_REQUEST",
+	"CFG_REPLY",
+	"CFG_SET",
+	"CFG_ACK",
+);
+
+typedef struct private_cp_payload_t private_cp_payload_t;
+
+/**
+ * Private data of an cp_payload_t object.
+ *
+ */
+struct private_cp_payload_t {
+	/**
+	 * Public cp_payload_t interface.
+	 */
+	cp_payload_t public;
+
+	/**
+	 * Next payload type.
+	 */
+	u_int8_t  next_payload;
+
+	/**
+	 * Critical flag.
+	 */
+	bool critical;
+
+	/**
+	 * Length of this payload.
+	 */
+	u_int16_t payload_length;
+
+	/**
+	 * List of attributes, as configuration_attribute_t
+	 */
+	linked_list_t *attributes;
+
+	/**
+	 * Config Type.
+	 */
+	u_int8_t type;
+};
+
+/**
+ * Encoding rules to parse or generate a IKEv2-CP Payload
+ *
+ * The defined offsets are the positions in a object of type
+ * private_cp_payload_t.
+ *
+ */
+encoding_rule_t cp_payload_encodings[] = {
+	/* 1 Byte next payload type, stored in the field next_payload */
+	{ U_INT_8,		offsetof(private_cp_payload_t, next_payload) 			},
+	/* the critical bit */
+	{ FLAG,			offsetof(private_cp_payload_t, critical) 				},
+	/* 7 Bit reserved bits, nowhere stored */
+	{ RESERVED_BIT,	0 														},
+	{ RESERVED_BIT,	0 														},
+	{ RESERVED_BIT,	0 														},
+	{ RESERVED_BIT,	0 														},
+	{ RESERVED_BIT,	0 														},
+	{ RESERVED_BIT,	0 														},
+	{ RESERVED_BIT,	0 														},
+	/* Length of the whole CP payload*/
+	{ PAYLOAD_LENGTH,		offsetof(private_cp_payload_t, payload_length) 	},
+	/* Proposals are stored in a proposal substructure,
+	   offset points to a linked_list_t pointer */
+	{ U_INT_8,				offsetof(private_cp_payload_t, type)			},
+	{ RESERVED_BYTE,0 														},
+	{ RESERVED_BYTE,0														},
+	{ RESERVED_BYTE,0														},
+	{ CONFIGURATION_ATTRIBUTES,	offsetof(private_cp_payload_t, attributes)	}
+};
+
+/*
+                           1                   2                   3
+       0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+      ! Next Payload  !C! RESERVED    !         Payload Length        !
+      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+      !   CFG Type    !                    RESERVED                   !
+      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+      !                                                               !
+      ~                   Configuration Attributes                    ~
+      !                                                               !
+      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+*/
+
+/**
+ * Implementation of payload_t.verify.
+ */
+static status_t verify(private_cp_payload_t *this)
+{
+	status_t status = SUCCESS;
+	enumerator_t *enumerator;
+	payload_t *attribute;
+
+	enumerator = this->attributes->create_enumerator(this->attributes);
+	while (enumerator->enumerate(enumerator, &attribute))
+	{
+		status = attribute->verify(attribute);
+		if (status != SUCCESS)
+		{
+			break;
+		}
+	}
+	enumerator->destroy(enumerator);
+	return status;
+}
+
+/**
+ * Implementation of payload_t.get_encoding_rules.
+ */
+static void get_encoding_rules(private_cp_payload_t *this,
+							   encoding_rule_t **rules, size_t *rule_count)
+{
+	*rules = cp_payload_encodings;
+	*rule_count = sizeof(cp_payload_encodings) / sizeof(encoding_rule_t);
+}
+
+/**
+ * Implementation of payload_t.get_type.
+ */
+static payload_type_t get_type(private_cp_payload_t *this)
+{
+	return CONFIGURATION;
+}
+
+/**
+ * Implementation of payload_t.get_next_type.
+ */
+static payload_type_t get_next_type(private_cp_payload_t *this)
+{
+	return this->next_payload;
+}
+
+/**
+ * Implementation of payload_t.set_next_type.
+ */
+static void set_next_type(private_cp_payload_t *this,payload_type_t type)
+{
+	this->next_payload = type;
+}
+
+/**
+ * recompute the length of the payload.
+ */
+static void compute_length(private_cp_payload_t *this)
+{
+	enumerator_t *enumerator;
+	payload_t *attribute;
+
+	this->payload_length = CP_PAYLOAD_HEADER_LENGTH;
+
+	enumerator = this->attributes->create_enumerator(this->attributes);
+	while (enumerator->enumerate(enumerator, &attribute))
+	{
+		this->payload_length += attribute->get_length(attribute);
+	}
+	enumerator->destroy(enumerator);
+}
+
+/**
+ * Implementation of payload_t.get_length.
+ */
+static size_t get_length(private_cp_payload_t *this)
+{
+	return this->payload_length;
+}
+
+/**
+ * Implementation of cp_payload_t.create_attribute_enumerator.
+ */
+static enumerator_t *create_attribute_enumerator(private_cp_payload_t *this)
+{
+	return this->attributes->create_enumerator(this->attributes);
+}
+
+/**
+ * Implementation of cp_payload_t.add_attribute.
+ */
+static void add_attribute(private_cp_payload_t *this,
+						  configuration_attribute_t *attribute)
+{
+	this->attributes->insert_last(this->attributes, attribute);
+	compute_length(this);
+}
+
+/**
+ * Implementation of cp_payload_t.get_type.
+ */
+static config_type_t get_config_type(private_cp_payload_t *this)
+{
+	return this->type;
+}
+
+/**
+ * Implementation of payload_t.destroy and cp_payload_t.destroy.
+ */
+static void destroy(private_cp_payload_t *this)
+{
+	this->attributes->destroy_offset(this->attributes,
+								offsetof(configuration_attribute_t, destroy));
+	free(this);
+}
+
+/*
+ * Described in header.
+ */
+cp_payload_t *cp_payload_create()
+{
+	private_cp_payload_t *this = malloc_thing(private_cp_payload_t);
+
+	this->public.payload_interface.verify = (status_t (*) (payload_t *))verify;
+	this->public.payload_interface.get_encoding_rules = (void (*) (payload_t *, encoding_rule_t **, size_t *) ) get_encoding_rules;
+	this->public.payload_interface.get_length = (size_t (*) (payload_t *)) get_length;
+	this->public.payload_interface.get_next_type = (payload_type_t (*) (payload_t *)) get_next_type;
+	this->public.payload_interface.set_next_type = (void (*) (payload_t *,payload_type_t)) set_next_type;
+	this->public.payload_interface.get_type = (payload_type_t (*) (payload_t *)) get_type;
+	this->public.payload_interface.destroy = (void (*) (payload_t *))destroy;
+
+	this->public.create_attribute_enumerator = (enumerator_t*(*)(cp_payload_t *))create_attribute_enumerator;
+	this->public.add_attribute = (void (*) (cp_payload_t *,configuration_attribute_t*))add_attribute;
+	this->public.get_type = (config_type_t (*) (cp_payload_t *))get_config_type;
+	this->public.destroy = (void (*)(cp_payload_t *))destroy;
+
+	/* set default values of the fields */
+	this->critical = FALSE;
+	this->next_payload = NO_PAYLOAD;
+	this->payload_length = CP_PAYLOAD_HEADER_LENGTH;
+	this->attributes = linked_list_create();
+	this->type = CFG_REQUEST;
+
+	return &this->public;
+}
+
+/*
+ * Described in header.
+ */
+cp_payload_t *cp_payload_create_type(config_type_t type)
+{
+	private_cp_payload_t *this = (private_cp_payload_t*)cp_payload_create();
+
+	this->type = type;
+
+	return &this->public;
+}
+