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/*
* Copyright (C) 2010 Martin Willi
* Copyright (C) 2010 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 "dhcp_transaction.h"
#include <collections/linked_list.h>
typedef struct private_dhcp_transaction_t private_dhcp_transaction_t;
/**
* Private data of an dhcp_transaction_t object.
*/
struct private_dhcp_transaction_t {
/**
* Public dhcp_transaction_t interface.
*/
dhcp_transaction_t public;
/**
* DHCP transaction ID
*/
u_int32_t id;
/**
* Peer identity
*/
identification_t *identity;
/**
* received DHCP address
*/
host_t *address;
/**
* discovered DHCP server address
*/
host_t *server;
/**
* List of added attributes, as attribute_entry_t
*/
linked_list_t *attributes;
};
/**
* Entry for an added attribute
*/
typedef struct {
configuration_attribute_type_t type;
chunk_t data;
} attribute_entry_t;
METHOD(dhcp_transaction_t, get_id, u_int32_t,
private_dhcp_transaction_t *this)
{
return this->id;
}
METHOD(dhcp_transaction_t, get_identity, identification_t*,
private_dhcp_transaction_t *this)
{
return this->identity;
}
METHOD(dhcp_transaction_t, set_address, void,
private_dhcp_transaction_t *this, host_t *address)
{
DESTROY_IF(this->address);
this->address = address;
}
METHOD(dhcp_transaction_t, get_address, host_t*,
private_dhcp_transaction_t *this)
{
return this->address;
}
METHOD(dhcp_transaction_t, set_server, void,
private_dhcp_transaction_t *this, host_t *server)
{
DESTROY_IF(this->server);
this->server = server;
}
METHOD(dhcp_transaction_t, get_server, host_t*,
private_dhcp_transaction_t *this)
{
return this->server;
}
METHOD(dhcp_transaction_t, add_attribute, void,
private_dhcp_transaction_t *this, configuration_attribute_type_t type,
chunk_t data)
{
attribute_entry_t *entry;
INIT(entry,
.type = type,
.data = chunk_clone(data),
);
this->attributes->insert_last(this->attributes, entry);
}
/**
* Filter function to map entries to type/data
*/
static bool attribute_filter(void *null, attribute_entry_t **entry,
configuration_attribute_type_t *type,
void **dummy, chunk_t *data)
{
*type = (*entry)->type;
*data = (*entry)->data;
return TRUE;
}
METHOD(dhcp_transaction_t, create_attribute_enumerator, enumerator_t*,
private_dhcp_transaction_t *this)
{
return enumerator_create_filter(
this->attributes->create_enumerator(this->attributes),
(void*)attribute_filter, NULL, NULL);
}
/**
* Clean up an attribute entry
*/
static void attribute_entry_destroy(attribute_entry_t *entry)
{
free(entry->data.ptr);
free(entry);
}
METHOD(dhcp_transaction_t, destroy, void,
private_dhcp_transaction_t *this)
{
this->identity->destroy(this->identity);
DESTROY_IF(this->address);
DESTROY_IF(this->server);
this->attributes->destroy_function(this->attributes,
(void*)attribute_entry_destroy);
free(this);
}
/**
* See header
*/
dhcp_transaction_t *dhcp_transaction_create(u_int32_t id,
identification_t *identity)
{
private_dhcp_transaction_t *this;
INIT(this,
.public = {
.get_id = _get_id,
.get_identity = _get_identity,
.set_address = _set_address,
.get_address = _get_address,
.set_server = _set_server,
.get_server = _get_server,
.add_attribute = _add_attribute,
.create_attribute_enumerator = _create_attribute_enumerator,
.destroy = _destroy,
},
.id = id,
.identity = identity->clone(identity),
.attributes = linked_list_create(),
);
return &this->public;
}
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