154 lines
3.6 KiB
C
154 lines
3.6 KiB
C
/*
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* Copyright (C) 2010 Martin Willi
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* Copyright (C) 2010 revosec AG
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* for more details.
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*/
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#include "hook.h"
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typedef struct private_unencrypted_notify_t private_unencrypted_notify_t;
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/**
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* Private data of an unencrypted_notify_t object.
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*/
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struct private_unencrypted_notify_t {
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/**
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* Implements the hook_t interface.
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*/
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hook_t hook;
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/**
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* ID of message send.
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*/
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int id;
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/**
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* Notify type
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*/
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char *type;
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/**
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* Notify data
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*/
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char *data;
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/**
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* SPI of notify
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*/
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int spi;
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/**
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* TRUE for a ESP protocol notify, FALSE for IKE
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*/
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bool esp;
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};
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METHOD(listener_t, ike_updown, bool,
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private_unencrypted_notify_t *this, ike_sa_t *ike_sa, bool up)
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{
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if (up)
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{
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message_t *message;
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host_t *host;
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notify_type_t type;
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notify_payload_t *notify;
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chunk_t data = chunk_empty;
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packet_t *packet;
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type = atoi(this->type);
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if (!type)
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{
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type = enum_from_name(notify_type_names, this->type);
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if (type == -1)
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{
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DBG1(DBG_CFG, "unknown notify: '%s', skipped", this->type);
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return TRUE;
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}
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}
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if (strncaseeq(this->data, "0x", 2))
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{
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data = chunk_skip(chunk_create(this->data, strlen(this->data)), 2);
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data = chunk_from_hex(data, NULL);
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}
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else if (this->data && strlen(this->data))
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{
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data = chunk_clone(chunk_create(this->data, strlen(this->data)));
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}
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notify = notify_payload_create_from_protocol_and_type(NOTIFY,
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this->esp ? PROTO_ESP : PROTO_IKE, type);
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notify->set_spi(notify, this->spi);
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if (data.len)
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{
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notify->set_notification_data(notify, data);
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free(data.ptr);
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}
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DBG1(DBG_CFG, "injecting unencrypted INFORMATIONAL message");
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message = message_create(IKEV2_MAJOR_VERSION, IKEV2_MINOR_VERSION);
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message->set_message_id(message, this->id);
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message->set_ike_sa_id(message, ike_sa->get_id(ike_sa));
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message->set_exchange_type(message, INFORMATIONAL);
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message->set_request(message, TRUE);
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host = ike_sa->get_my_host(ike_sa);
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message->set_source(message, host->clone(host));
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host = ike_sa->get_other_host(ike_sa);
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message->set_destination(message, host->clone(host));
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message->add_payload(message, ¬ify->payload_interface);
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if (message->generate(message, NULL, &packet) != SUCCESS)
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{
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DBG1(DBG_CFG, "generating message failed");
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message->destroy(message);
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return TRUE;
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}
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message->destroy(message);
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charon->sender->send(charon->sender, packet);
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}
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return TRUE;
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}
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METHOD(hook_t, destroy, void,
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private_unencrypted_notify_t *this)
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{
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free(this);
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}
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/**
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* Create the IKE_AUTH fill hook
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*/
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hook_t *unencrypted_notify_hook_create(char *name)
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{
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private_unencrypted_notify_t *this;
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INIT(this,
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.hook = {
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.listener = {
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.ike_updown = _ike_updown,
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},
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.destroy = _destroy,
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},
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.id = conftest->test->get_int(conftest->test,
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"hooks.%s.id", 2, name),
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.type = conftest->test->get_str(conftest->test,
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"hooks.%s.type", "", name),
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.data = conftest->test->get_str(conftest->test,
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"hooks.%s.data", "", name),
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.spi = conftest->test->get_int(conftest->test,
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"hooks.%s.spi", 0, name),
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.esp = conftest->test->get_bool(conftest->test,
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"hooks.%s.esp", FALSE, name),
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);
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return &this->hook;
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}
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