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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_add_notify_t private_add_notify_t;
/**
* Private data of an add_notify_t object.
*/
struct private_add_notify_t {
/**
* Implements the hook_t interface.
*/
hook_t hook;
/**
* Alter requests or responses?
*/
bool req;
/**
* ID of message to alter.
*/
int id;
/**
* Notify type
*/
char *type;
/**
* Notify data
*/
char *data;
/**
* SPI of notify
*/
int spi;
/**
* TRUE for a ESP protocol notify, FALSE for IKE
*/
bool esp;
};
METHOD(listener_t, message, bool,
private_add_notify_t *this, ike_sa_t *ike_sa, message_t *message,
bool incoming, bool plain)
{
if (!incoming && plain &&
message->get_request(message) == this->req &&
message->get_message_id(message) == this->id)
{
notify_type_t type;
notify_payload_t *notify;
chunk_t data = chunk_empty;
type = atoi(this->type);
if (!type)
{
if (!enum_from_name(notify_type_names, this->type, &type))
{
DBG1(DBG_CFG, "unknown notify: '%s', skipped", this->type);
return TRUE;
}
}
if (strncaseeq(this->data, "0x", 2))
{
data = chunk_skip(chunk_create(this->data, strlen(this->data)), 2);
data = chunk_from_hex(data, NULL);
}
else if (strlen(this->data))
{
data = chunk_clone(chunk_create(this->data, strlen(this->data)));
}
notify = notify_payload_create_from_protocol_and_type(PLV2_NOTIFY,
this->esp ? PROTO_ESP : PROTO_IKE, type);
notify->set_spi(notify, this->spi);
if (data.len)
{
notify->set_notification_data(notify, data);
free(data.ptr);
}
message->add_payload(message, ¬ify->payload_interface);
}
return TRUE;
}
METHOD(hook_t, destroy, void,
private_add_notify_t *this)
{
free(this);
}
/**
* Create the IKE_AUTH fill hook
*/
hook_t *add_notify_hook_create(char *name)
{
private_add_notify_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),
.type = conftest->test->get_str(conftest->test,
"hooks.%s.type", "", name),
.data = conftest->test->get_str(conftest->test,
"hooks.%s.data", "", name),
.spi = conftest->test->get_int(conftest->test,
"hooks.%s.spi", 0, name),
.esp = conftest->test->get_bool(conftest->test,
"hooks.%s.esp", FALSE, name),
);
return &this->hook;
}
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