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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 "hook.h"
typedef struct private_unsort_message_t private_unsort_message_t;
/**
* Private data of an unsort_message_t object.
*/
struct private_unsort_message_t {
/**
* Implements the hook_t interface.
*/
hook_t hook;
/**
* Alter requests or responses?
*/
bool req;
/**
* ID of message to alter.
*/
int id;
/**
* Order of payloads we want
*/
char *order;
};
METHOD(listener_t, message, bool,
private_unsort_message_t *this, ike_sa_t *ike_sa, message_t *message,
bool incoming)
{
if (!incoming &&
message->get_request(message) == this->req &&
message->get_message_id(message) == this->id)
{
enumerator_t *enumerator, *order;
linked_list_t *list;
payload_type_t type;
payload_t *payload;
char *name;
list = linked_list_create();
enumerator = message->create_payload_enumerator(message);
while (enumerator->enumerate(enumerator, &payload))
{
message->remove_payload_at(message, enumerator);
list->insert_last(list, payload);
}
enumerator->destroy(enumerator);
order = enumerator_create_token(this->order, ", ", " ");
while (order->enumerate(order, &name))
{
type = enum_from_name(payload_type_short_names, name);
if (type != -1)
{
enumerator = list->create_enumerator(list);
while (enumerator->enumerate(enumerator, &payload))
{
if (payload->get_type(payload) == type)
{
list->remove_at(list, enumerator);
message->add_payload(message, payload);
}
}
enumerator->destroy(enumerator);
}
else
{
DBG1(DBG_CFG, "unknown payload to sort: '%s', skipped", name);
}
}
order->destroy(order);
while (list->remove_first(list, (void**)&payload) == SUCCESS)
{
message->add_payload(message, payload);
}
list->destroy(list);
message->disable_sort(message);
}
return TRUE;
}
METHOD(hook_t, destroy, void,
private_unsort_message_t *this)
{
free(this);
}
/**
* Create the IKE_AUTH fill hook
*/
hook_t *unsort_message_hook_create(char *name)
{
private_unsort_message_t *this;
INIT(this,
.hook = {
.listener = {
.message = _message,
},
.destroy = _destroy,
},
.req = conftest->test->get_bool(conftest->test,
"hooks.%s.request", TRUE, name),
.id = conftest->test->get_int(conftest->test,
"hooks.%s.id", 0, name),
.order = conftest->test->get_str(conftest->test,
"hooks.%s.order", "", name),
);
return &this->hook;
}
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