162 lines
4.3 KiB
C
162 lines
4.3 KiB
C
/*
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* Copyright (C) 2010 Tobias Brunner
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* Hochschule fuer Technik Rapperswil
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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 "kernel_handler.h"
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#include <hydra.h>
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#include <daemon.h>
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#include <processing/jobs/acquire_job.h>
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#include <processing/jobs/delete_child_sa_job.h>
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#include <processing/jobs/migrate_job.h>
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#include <processing/jobs/rekey_child_sa_job.h>
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#include <processing/jobs/roam_job.h>
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#include <processing/jobs/update_sa_job.h>
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typedef struct private_kernel_handler_t private_kernel_handler_t;
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/**
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* Private data of a kernel_handler_t object.
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*/
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struct private_kernel_handler_t {
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/**
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* Public part of kernel_handler_t object.
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*/
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kernel_handler_t public;
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};
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/**
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* convert an IP protocol identifier to the IKEv2 specific protocol identifier.
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*/
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static inline protocol_id_t proto_ip2ike(u_int8_t protocol)
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{
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switch (protocol)
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{
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case IPPROTO_ESP:
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return PROTO_ESP;
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case IPPROTO_AH:
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return PROTO_AH;
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default:
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return protocol;
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}
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}
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METHOD(kernel_listener_t, acquire, bool,
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private_kernel_handler_t *this, u_int32_t reqid,
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traffic_selector_t *src_ts, traffic_selector_t *dst_ts)
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{
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if (src_ts && dst_ts)
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{
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DBG1(DBG_KNL, "creating acquire job for policy %R === %R with "
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"reqid {%u}", src_ts, dst_ts, reqid);
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}
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else
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{
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DBG1(DBG_KNL, "creating acquire job for policy with reqid {%u}", reqid);
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}
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lib->processor->queue_job(lib->processor,
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(job_t*)acquire_job_create(reqid, src_ts, dst_ts));
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return TRUE;
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}
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METHOD(kernel_listener_t, expire, bool,
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private_kernel_handler_t *this, u_int32_t reqid, u_int8_t protocol,
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u_int32_t spi, bool hard)
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{
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protocol_id_t proto = proto_ip2ike(protocol);
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DBG1(DBG_KNL, "creating %s job for %N CHILD_SA with SPI %.8x and reqid {%u}",
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hard ? "delete" : "rekey", protocol_id_names, proto, ntohl(spi), reqid);
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if (hard)
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{
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lib->processor->queue_job(lib->processor,
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(job_t*)delete_child_sa_job_create(reqid, proto, spi, hard));
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}
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else
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{
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lib->processor->queue_job(lib->processor,
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(job_t*)rekey_child_sa_job_create(reqid, proto, spi));
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}
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return TRUE;
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}
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METHOD(kernel_listener_t, mapping, bool,
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private_kernel_handler_t *this, u_int32_t reqid, u_int32_t spi,
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host_t *remote)
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{
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DBG1(DBG_KNL, "NAT mappings of ESP CHILD_SA with SPI %.8x and reqid {%u} "
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"changed, queuing update job", ntohl(spi), reqid);
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lib->processor->queue_job(lib->processor,
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(job_t*)update_sa_job_create(reqid, remote));
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return TRUE;
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}
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METHOD(kernel_listener_t, migrate, bool,
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private_kernel_handler_t *this, u_int32_t reqid,
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traffic_selector_t *src_ts, traffic_selector_t *dst_ts,
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policy_dir_t direction, host_t *local, host_t *remote)
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{
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DBG1(DBG_KNL, "creating migrate job for policy %R === %R %N with reqid {%u}",
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src_ts, dst_ts, policy_dir_names, direction, reqid, local);
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lib->processor->queue_job(lib->processor,
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(job_t*)migrate_job_create(reqid, src_ts, dst_ts,
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direction, local, remote));
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return TRUE;
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}
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METHOD(kernel_listener_t, roam, bool,
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private_kernel_handler_t *this, bool address)
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{
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DBG2(DBG_KNL, "creating roam job %s",
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address ? "due to address/link change" : "due to route change");
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lib->processor->queue_job(lib->processor, (job_t*)roam_job_create(address));
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return TRUE;
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}
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METHOD(kernel_handler_t, destroy, void,
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private_kernel_handler_t *this)
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{
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hydra->kernel_interface->remove_listener(hydra->kernel_interface,
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&this->public.listener);
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free(this);
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}
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kernel_handler_t *kernel_handler_create()
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{
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private_kernel_handler_t *this;
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INIT(this,
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.public = {
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.listener = {
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.acquire = _acquire,
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.expire = _expire,
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.mapping = _mapping,
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.migrate = _migrate,
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.roam = _roam,
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},
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.destroy = _destroy,
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},
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);
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hydra->kernel_interface->add_listener(hydra->kernel_interface,
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&this->public.listener);
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return &this->public;
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}
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