- implemented and tested cp_payload_t

1 files changed, 284 insertions, 0 deletions

diff --git a/Source/charon/encoding/payloads/configuration_attribute.c b/Source/charon/encoding/payloads/configuration_attribute.c
new file mode 100644
index 000000000..4f3294832
--- /dev/null
+++ b/Source/charon/encoding/payloads/configuration_attribute.c
@@ -0,0 +1,284 @@
+/**
+ * @file configuration_attribute.c
+ * 
+ * @brief Implementation of configuration_attribute_t.
+ * 
+ */
+
+/*
+ * Copyright (C) 2005 Jan Hutter, Martin Willi
+ * 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.
+ */
+ 
+/* offsetof macro */
+#include <stddef.h>
+
+#include "configuration_attribute.h"
+
+#include <encoding/payloads/encodings.h>
+#include <types.h>
+#include <utils/allocator.h>
+
+
+typedef struct private_configuration_attribute_t private_configuration_attribute_t;
+
+/**
+ * Private data of an configuration_attribute_t object.
+ * 
+ */
+struct private_configuration_attribute_t {
+	/**
+	 * Public configuration_attribute_t interface.
+	 */
+	configuration_attribute_t public;
+	
+	/**
+	 * Type of the attribute.
+	 */
+	u_int16_t attribute_type;
+	
+	/**
+	 * Length of the attribute.
+	 */
+	u_int16_t attribute_length;
+	
+
+	/**
+	 * Attribute value as chunk.
+	 */
+	chunk_t attribute_value;
+};
+
+/** 
+ * String mappings for configuration_attribute_type_t.
+ */
+mapping_t configuration_attribute_type_m[] = {
+	{INTERNAL_IP4_ADDRESS, "INTERNAL_IP4_ADDRESS"},
+	{INTERNAL_IP4_NETMASK, "INTERNAL_IP4_NETMASK"},
+	{INTERNAL_IP4_DNS, "INTERNAL_IP4_DNS"},
+	{INTERNAL_IP4_NBNS, "INTERNAL_IP4_NBNS"},
+	{INTERNAL_ADDRESS_EXPIRY, "INTERNAL_ADDRESS_EXPIRY"},
+	{INTERNAL_IP4_DHCP, "INTERNAL_IP4_DHCP"},
+	{APPLICATION_VERSION, "APPLICATION_VERSION"},
+	{INTERNAL_IP6_ADDRESS, "INTERNAL_IP6_ADDRESS"},
+	{INTERNAL_IP6_DNS, "INTERNAL_IP6_DNS"},
+	{INTERNAL_IP6_NBNS, "INTERNAL_IP6_NBNS"},
+	{INTERNAL_IP6_DHCP, "INTERNAL_IP6_DHCP"},
+	{INTERNAL_IP4_SUBNET, "INTERNAL_IP4_SUBNET"},
+	{SUPPORTED_ATTRIBUTES, "SUPPORTED_ATTRIBUTES"},
+	{INTERNAL_IP6_SUBNET, "INTERNAL_IP6_SUBNET"},
+	{MAPPING_END, NULL}
+};
+
+
+/**
+ * Encoding rules to parse or generate a configuration attribute.
+ * 
+ * The defined offsets are the positions in a object of type 
+ * private_configuration_attribute_t.
+ * 
+ */
+encoding_rule_t configuration_attribute_encodings[] = {
+
+	{ RESERVED_BIT,	0																					},
+	/* type of the attribute as 15 bit unsigned integer */
+	{ ATTRIBUTE_TYPE,			offsetof(private_configuration_attribute_t, attribute_type)				},	
+	/* Length of attribute value */
+	{ CONFIGURATION_ATTRIBUTE_LENGTH,		offsetof(private_configuration_attribute_t, attribute_length)},
+	/* Value of attribute if attribute format flag is zero */
+	{ CONFIGURATION_ATTRIBUTE_VALUE,		offsetof(private_configuration_attribute_t, attribute_value)}
+};
+
+/*
+                           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
+      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+      !R|         Attribute Type      !            Length             |
+      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+      |                                                               |
+      ~                             Value                             ~
+      |                                                               |
+      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+*/
+
+/**
+ * Implementation of payload_t.verify.
+ */
+static status_t verify(private_configuration_attribute_t *this)
+{
+	switch (this->attribute_type)
+	{
+         case INTERNAL_IP4_ADDRESS:
+         case INTERNAL_IP4_NETMASK:
+		 case INTERNAL_IP4_DNS:
+		 case INTERNAL_IP4_NBNS:
+		 case INTERNAL_ADDRESS_EXPIRY:
+		 case INTERNAL_IP4_DHCP:
+		 case APPLICATION_VERSION:
+		 case INTERNAL_IP6_ADDRESS:
+		 case INTERNAL_IP6_DNS:
+		 case INTERNAL_IP6_NBNS:
+		 case INTERNAL_IP6_DHCP:
+		 case INTERNAL_IP4_SUBNET:
+		 case SUPPORTED_ATTRIBUTES:
+		 case INTERNAL_IP6_SUBNET:
+		 {
+		 	/* Attribute types are not checked in here */
+		 	break;
+		 }
+		 default:
+		 	return FAILED;
+	}
+	
+	if (this->attribute_length != this->attribute_value.len)
+	{
+		return FAILED;
+	}
+	
+	return SUCCESS;
+}
+
+/**
+ * Implementation of payload_t.get_encoding_rules.
+ */
+static void get_encoding_rules(private_configuration_attribute_t *this, encoding_rule_t **rules, size_t *rule_count)
+{
+	*rules = configuration_attribute_encodings;
+	*rule_count = sizeof(configuration_attribute_encodings) / sizeof(encoding_rule_t);
+}
+
+/**
+ * Implementation of payload_t.get_type.
+ */
+static payload_type_t get_type(private_configuration_attribute_t *this)
+{
+	return CONFIGURATION_ATTRIBUTE;
+}
+
+/**
+ * Implementation of payload_t.get_next_type.
+ */
+static payload_type_t get_next_type(private_configuration_attribute_t *this)
+{
+	return (NO_PAYLOAD);
+}
+
+/**
+ * Implementation of payload_t.set_next_type.
+ */
+static void set_next_type(private_configuration_attribute_t *this,payload_type_t type)
+{
+}
+
+/**
+ * Implementation of configuration_attribute_t.get_length.
+ */
+static size_t get_length(private_configuration_attribute_t *this)
+{
+	return (this->attribute_value.len + CONFIGURATION_ATTRIBUTE_HEADER_LENGTH);
+}
+
+/**
+ * Implementation of configuration_attribute_t.set_value.
+ */
+static void set_value(private_configuration_attribute_t *this, chunk_t value)
+{
+	if (this->attribute_value.ptr != NULL)
+	{
+		/* free existing value */
+		allocator_free_chunk(&(this->attribute_value));		
+	}
+	
+	this->attribute_value.ptr = allocator_clone_bytes(value.ptr,value.len);
+	this->attribute_value.len = value.len;
+	
+	this->attribute_length = this->attribute_value.len;
+}
+
+/**
+ * Implementation of configuration_attribute_t.get_value.
+ */
+static chunk_t get_value (private_configuration_attribute_t *this)
+{
+	return this->attribute_value;
+}
+
+
+/**
+ * Implementation of configuration_attribute_t.set_attribute_type.
+ */
+static void set_attribute_type (private_configuration_attribute_t *this, u_int16_t type)
+{
+	this->attribute_type = type & 0x7FFF;
+}
+
+/**
+ * Implementation of configuration_attribute_t.get_attribute_type.
+ */
+static u_int16_t get_attribute_type (private_configuration_attribute_t *this)
+{
+	return this->attribute_type;
+}
+
+/**
+ * Implementation of configuration_attribute_t.get_attribute_length.
+ */
+static u_int16_t get_attribute_length (private_configuration_attribute_t *this)
+{
+	return this->attribute_length;
+}
+
+
+/**
+ * Implementation of configuration_attribute_t.destroy and payload_t.destroy.
+ */
+static void destroy(private_configuration_attribute_t *this)
+{
+	if (this->attribute_value.ptr != NULL)
+	{
+		allocator_free(this->attribute_value.ptr);
+	}	
+	allocator_free(this);
+}
+
+/*
+ * Described in header.
+ */
+configuration_attribute_t *configuration_attribute_create()
+{
+	private_configuration_attribute_t *this = allocator_alloc_thing(private_configuration_attribute_t);
+
+	/* payload interface */
+	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;
+	
+	/* public functions */
+	this->public.set_value = (void (*) (configuration_attribute_t *,chunk_t)) set_value;
+	this->public.get_value = (chunk_t (*) (configuration_attribute_t *)) get_value;
+	this->public.set_attribute_type = (void (*) (configuration_attribute_t *,u_int16_t type)) set_attribute_type;
+	this->public.get_attribute_type = (u_int16_t (*) (configuration_attribute_t *)) get_attribute_type;
+	this->public.get_attribute_length = (u_int16_t (*) (configuration_attribute_t *)) get_attribute_length;
+	this->public.destroy = (void (*) (configuration_attribute_t *)) destroy;
+	
+	/* set default values of the fields */
+	this->attribute_type = 0;
+	this->attribute_value = CHUNK_INITIALIZER;
+	this->attribute_length = 0;
+
+	return (&(this->public));
+}