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/**
* @file configuration.c
*
* @brief Configuration class used to store IKE_SA-configurations.
*
* Object of this type represents a configuration for an IKE_SA and its child_sa's.
*
*/
/*
* 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.
*/
#include <stdlib.h>
#include "configuration_manager.h"
#include "types.h"
#include "utils/allocator.h"
#include "payloads/nonce_payload.h"
#include "payloads/proposal_substructure.h"
#include "payloads/ke_payload.h"
#include "payloads/transform_substructure.h"
#include "payloads/transform_attribute.h"
/**
* Private data of an configuration_t object
*/
typedef struct private_configuration_manager_s private_configuration_manager_t;
struct private_configuration_manager_s {
/**
* Public part
*/
configuration_manager_t public;
};
static status_t get_remote_host(private_configuration_manager_t *this, char *name, host_t **host)
{
/* some hard coded users for testing */
host_t *remote;
if (strcmp(name, "pinflb30") == 0) {
remote = host_create(AF_INET, "152.96.193.130", 500);
if (remote == NULL) {
return OUT_OF_RES;
}
*host = remote;
return SUCCESS;
}
else if (strcmp(name, "pinflb31") == 0) {
remote = host_create(AF_INET, "152.96.193.131", 500);
if (remote == NULL) {
return OUT_OF_RES;
}
*host = remote;
return SUCCESS;
}
return NOT_FOUND;
}
static status_t get_local_host(private_configuration_manager_t *this, char *name, host_t **host)
{
/* use default route for now */
host_t *local;
local = host_create(AF_INET, "0.0.0.0", 0);
if (local == NULL)
{
return OUT_OF_RES;
}
*host = local;
return SUCCESS;
}
static status_t get_proposals_for_host(private_configuration_manager_t *this, host_t *host, linked_list_iterator_t *iterator)
{
/* use a default proposal:
* - ENCR_AES_CBC 128Bit
* - PRF_HMAC_SHA1 128Bit
* - AUTH_HMAC_SHA1_96 96Bit
* - MODP_1024_BIT
*/
proposal_substructure_t *proposal;
transform_substructure_t *transform;
transform_attribute_t *attribute;
status_t status;
proposal = proposal_substructure_create();
if (proposal == NULL)
{
return OUT_OF_RES;
}
/*
* Encryption Algorithm
*/
transform = transform_substructure_create();
if (transform == NULL)
{
proposal->destroy(proposal);
return OUT_OF_RES;
}
status = proposal->add_transform_substructure(proposal, transform);
if (status != SUCCESS)
{
proposal->destroy(proposal);
return OUT_OF_RES;
}
transform->set_is_last_transform(transform, FALSE);
transform->set_transform_type(transform, ENCRYPTION_ALGORITHM);
transform->set_transform_id(transform, ENCR_AES_CBC);
attribute = transform_attribute_create();
if (attribute == NULL)
{
proposal->destroy(proposal);
return OUT_OF_RES;
}
status = transform->add_transform_attribute(transform, attribute);
if (status != SUCCESS)
{
proposal->destroy(proposal);
return OUT_OF_RES;
}
attribute->set_attribute_type(attribute, KEY_LENGTH);
attribute->set_value(attribute, 16);
/*
* Pseudo-random Function
*/
transform = transform_substructure_create();
if (transform == NULL)
{
proposal->destroy(proposal);
return OUT_OF_RES;
}
status = proposal->add_transform_substructure(proposal, transform);
if (status != SUCCESS)
{
proposal->destroy(proposal);
return OUT_OF_RES;
}
transform->set_is_last_transform(transform, FALSE);
transform->set_transform_type(transform, PSEUDO_RANDOM_FUNCTION);
transform->set_transform_id(transform, PRF_HMAC_SHA1);
attribute = transform_attribute_create();
if (attribute == NULL)
{
proposal->destroy(proposal);
return OUT_OF_RES;
}
status = transform->add_transform_attribute(transform, attribute);
if (status != SUCCESS)
{
proposal->destroy(proposal);
return OUT_OF_RES;
}
attribute->set_attribute_type(attribute, KEY_LENGTH);
attribute->set_value(attribute, 16);
/*
* Integrity Algorithm
*/
transform = transform_substructure_create();
if (transform == NULL)
{
proposal->destroy(proposal);
return OUT_OF_RES;
}
status = proposal->add_transform_substructure(proposal, transform);
if (status != SUCCESS)
{
proposal->destroy(proposal);
return OUT_OF_RES;
}
transform->set_is_last_transform(transform, FALSE);
transform->set_transform_type(transform, INTEGRITIY_ALGORITHM);
transform->set_transform_id(transform, AUTH_HMAC_SHA1_96);
attribute = transform_attribute_create();
if (attribute == NULL)
{
proposal->destroy(proposal);
return OUT_OF_RES;
}
status = transform->add_transform_attribute(transform, attribute);
if (status != SUCCESS)
{
proposal->destroy(proposal);
return OUT_OF_RES;
}
attribute->set_attribute_type(attribute, KEY_LENGTH);
attribute->set_value(attribute, 12);
/*
* Diffie-Hellman Group
*/
transform = transform_substructure_create();
if (transform == NULL)
{
proposal->destroy(proposal);
return OUT_OF_RES;
}
status = proposal->add_transform_substructure(proposal, transform);
if (status != SUCCESS)
{
proposal->destroy(proposal);
return OUT_OF_RES;
}
transform->set_is_last_transform(transform, FALSE);
transform->set_transform_type(transform, DIFFIE_HELLMAN_GROUP);
transform->set_transform_id(transform, MODP_1024_BIT);
iterator->insert_after(iterator, (void*)proposal);
return SUCCESS;
}
static status_t select_proposals_for_host(private_configuration_manager_t *this, host_t *host, linked_list_iterator_t *in, linked_list_iterator_t *out)
{
return FAILED;
}
/**
* Implements function destroy of configuration_t.
* See #configuration_s.destroy for description.
*/
static status_t destroy(private_configuration_manager_t *this)
{
allocator_free(this);
return SUCCESS;
}
/*
* Described in header-file
*/
configuration_manager_t *configuration_manager_create()
{
private_configuration_manager_t *this = allocator_alloc_thing(private_configuration_manager_t);
if (this == NULL)
{
return NULL;
}
/* public functions */
this->public.destroy = (status_t(*)(configuration_manager_t*))destroy;
this->public.get_remote_host = (status_t(*)(configuration_manager_t*,char*,host_t**))get_remote_host;
this->public.get_local_host = (status_t(*)(configuration_manager_t*,char*,host_t**))get_local_host;
this->public.get_proposals_for_host = (status_t(*)(configuration_manager_t*,host_t*,linked_list_iterator_t*))get_proposals_for_host;
this->public.select_proposals_for_host = (status_t(*)(configuration_manager_t*,host_t*,linked_list_iterator_t*,linked_list_iterator_t*))select_proposals_for_host;
return (&this->public);
}
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