141 lines
3.1 KiB
C
141 lines
3.1 KiB
C
/*
|
|
* 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)
|
|
{
|
|
type = enum_from_name(notify_type_names, this->type);
|
|
if (type == -1)
|
|
{
|
|
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 (this->data && strlen(this->data))
|
|
{
|
|
data = chunk_clone(chunk_create(this->data, strlen(this->data)));
|
|
}
|
|
notify = notify_payload_create_from_protocol_and_type(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;
|
|
}
|