Moved kernel interface to libhydra.
This commit is contained in:
Tobias Brunner
@@ -15,7 +15,7 @@
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/**
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* @defgroup kernel_handler kernel_handler
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* @{ @ingroup kernel
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* @{ @ingroup ckernel
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*/
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#ifndef KERNEL_HANDLER_H_
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@@ -1,523 +0,0 @@
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/*
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* Copyright (C) 2008-2010 Tobias Brunner
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* Hochschule fuer Technik Rapperswil
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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 "kernel_interface.h"
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#include <daemon.h>
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#include <threading/mutex.h>
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#include <utils/linked_list.h>
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typedef struct private_kernel_interface_t private_kernel_interface_t;
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/**
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* Private data of a kernel_interface_t object.
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*/
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struct private_kernel_interface_t {
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/**
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* Public part of kernel_interface_t object.
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*/
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kernel_interface_t public;
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/**
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* ipsec interface
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*/
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kernel_ipsec_t *ipsec;
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/**
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* network interface
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*/
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kernel_net_t *net;
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/**
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* mutex for listeners
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*/
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mutex_t *mutex;
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/**
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* list of registered listeners
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*/
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linked_list_t *listeners;
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};
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METHOD(kernel_interface_t, get_spi, status_t,
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private_kernel_interface_t *this, host_t *src, host_t *dst,
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u_int8_t protocol, u_int32_t reqid, u_int32_t *spi)
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{
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if (!this->ipsec)
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{
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return NOT_SUPPORTED;
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}
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return this->ipsec->get_spi(this->ipsec, src, dst, protocol, reqid, spi);
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}
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METHOD(kernel_interface_t, get_cpi, status_t,
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private_kernel_interface_t *this, host_t *src, host_t *dst,
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u_int32_t reqid, u_int16_t *cpi)
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{
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if (!this->ipsec)
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{
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return NOT_SUPPORTED;
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}
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return this->ipsec->get_cpi(this->ipsec, src, dst, reqid, cpi);
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}
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METHOD(kernel_interface_t, add_sa, status_t,
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private_kernel_interface_t *this, host_t *src, host_t *dst,
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u_int32_t spi, u_int8_t protocol, u_int32_t reqid,
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mark_t mark, lifetime_cfg_t *lifetime, u_int16_t enc_alg, chunk_t enc_key,
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u_int16_t int_alg, chunk_t int_key, ipsec_mode_t mode, u_int16_t ipcomp,
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u_int16_t cpi, bool encap, bool inbound, traffic_selector_t *src_ts,
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traffic_selector_t *dst_ts)
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{
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if (!this->ipsec)
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{
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return NOT_SUPPORTED;
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}
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return this->ipsec->add_sa(this->ipsec, src, dst, spi, protocol, reqid,
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mark, lifetime, enc_alg, enc_key, int_alg, int_key, mode, ipcomp,
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cpi, encap, inbound, src_ts, dst_ts);
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}
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METHOD(kernel_interface_t, update_sa, status_t,
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private_kernel_interface_t *this, u_int32_t spi, u_int8_t protocol,
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u_int16_t cpi, host_t *src, host_t *dst, host_t *new_src, host_t *new_dst,
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bool encap, bool new_encap, mark_t mark)
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{
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if (!this->ipsec)
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{
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return NOT_SUPPORTED;
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}
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return this->ipsec->update_sa(this->ipsec, spi, protocol, cpi, src, dst,
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new_src, new_dst, encap, new_encap, mark);
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}
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METHOD(kernel_interface_t, query_sa, status_t,
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private_kernel_interface_t *this, host_t *src, host_t *dst,
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u_int32_t spi, u_int8_t protocol, mark_t mark, u_int64_t *bytes)
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{
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if (!this->ipsec)
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{
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return NOT_SUPPORTED;
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}
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return this->ipsec->query_sa(this->ipsec, src, dst, spi, protocol, mark, bytes);
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}
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METHOD(kernel_interface_t, del_sa, status_t,
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private_kernel_interface_t *this, host_t *src, host_t *dst, u_int32_t spi,
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u_int8_t protocol, u_int16_t cpi, mark_t mark)
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{
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if (!this->ipsec)
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{
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return NOT_SUPPORTED;
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}
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return this->ipsec->del_sa(this->ipsec, src, dst, spi, protocol, cpi, mark);
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}
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METHOD(kernel_interface_t, add_policy, status_t,
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private_kernel_interface_t *this, host_t *src, host_t *dst,
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traffic_selector_t *src_ts, traffic_selector_t *dst_ts,
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policy_dir_t direction, u_int32_t spi, u_int8_t protocol,
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u_int32_t reqid, mark_t mark, ipsec_mode_t mode, u_int16_t ipcomp,
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u_int16_t cpi, bool routed)
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{
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if (!this->ipsec)
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{
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return NOT_SUPPORTED;
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}
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return this->ipsec->add_policy(this->ipsec, src, dst, src_ts, dst_ts,
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direction, spi, protocol, reqid, mark, mode, ipcomp, cpi, routed);
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}
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METHOD(kernel_interface_t, query_policy, status_t,
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private_kernel_interface_t *this, traffic_selector_t *src_ts,
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traffic_selector_t *dst_ts, policy_dir_t direction, mark_t mark,
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u_int32_t *use_time)
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{
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if (!this->ipsec)
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{
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return NOT_SUPPORTED;
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}
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return this->ipsec->query_policy(this->ipsec, src_ts, dst_ts,
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direction, mark, use_time);
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}
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METHOD(kernel_interface_t, del_policy, status_t,
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private_kernel_interface_t *this, traffic_selector_t *src_ts,
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traffic_selector_t *dst_ts, policy_dir_t direction, mark_t mark,
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bool unrouted)
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{
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if (!this->ipsec)
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{
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return NOT_SUPPORTED;
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}
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return this->ipsec->del_policy(this->ipsec, src_ts, dst_ts,
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direction, mark, unrouted);
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}
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METHOD(kernel_interface_t, get_source_addr, host_t*,
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private_kernel_interface_t *this, host_t *dest, host_t *src)
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{
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if (!this->net)
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{
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return NULL;
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}
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return this->net->get_source_addr(this->net, dest, src);
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}
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METHOD(kernel_interface_t, get_nexthop, host_t*,
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private_kernel_interface_t *this, host_t *dest)
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{
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if (!this->net)
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{
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return NULL;
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}
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return this->net->get_nexthop(this->net, dest);
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}
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METHOD(kernel_interface_t, get_interface, char*,
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private_kernel_interface_t *this, host_t *host)
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{
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if (!this->net)
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{
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return NULL;
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}
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return this->net->get_interface(this->net, host);
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}
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METHOD(kernel_interface_t, create_address_enumerator, enumerator_t*,
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private_kernel_interface_t *this, bool include_down_ifaces,
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bool include_virtual_ips)
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{
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if (!this->net)
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{
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return enumerator_create_empty();
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}
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return this->net->create_address_enumerator(this->net, include_down_ifaces,
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include_virtual_ips);
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}
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METHOD(kernel_interface_t, add_ip, status_t,
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private_kernel_interface_t *this, host_t *virtual_ip, host_t *iface_ip)
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{
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if (!this->net)
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{
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return NOT_SUPPORTED;
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}
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return this->net->add_ip(this->net, virtual_ip, iface_ip);
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}
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METHOD(kernel_interface_t, del_ip, status_t,
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private_kernel_interface_t *this, host_t *virtual_ip)
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{
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if (!this->net)
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{
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return NOT_SUPPORTED;
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}
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return this->net->del_ip(this->net, virtual_ip);
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}
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METHOD(kernel_interface_t, add_route, status_t,
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private_kernel_interface_t *this, chunk_t dst_net,
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u_int8_t prefixlen, host_t *gateway, host_t *src_ip, char *if_name)
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{
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if (!this->net)
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{
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return NOT_SUPPORTED;
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}
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return this->net->add_route(this->net, dst_net, prefixlen, gateway,
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src_ip, if_name);
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}
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METHOD(kernel_interface_t, del_route, status_t,
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private_kernel_interface_t *this, chunk_t dst_net,
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u_int8_t prefixlen, host_t *gateway, host_t *src_ip, char *if_name)
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{
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if (!this->net)
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{
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return NOT_SUPPORTED;
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}
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return this->net->del_route(this->net, dst_net, prefixlen, gateway,
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src_ip, if_name);
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}
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METHOD(kernel_interface_t, bypass_socket, bool,
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private_kernel_interface_t *this, int fd, int family)
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{
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if (!this->ipsec)
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{
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return FALSE;
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}
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return this->ipsec->bypass_socket(this->ipsec, fd, family);
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}
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METHOD(kernel_interface_t, get_address_by_ts, status_t,
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private_kernel_interface_t *this, traffic_selector_t *ts, host_t **ip)
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{
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enumerator_t *addrs;
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host_t *host;
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int family;
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bool found = FALSE;
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DBG2(DBG_KNL, "getting a local address in traffic selector %R", ts);
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/* if we have a family which includes localhost, we do not
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* search for an IP, we use the default */
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family = ts->get_type(ts) == TS_IPV4_ADDR_RANGE ? AF_INET : AF_INET6;
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if (family == AF_INET)
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{
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host = host_create_from_string("127.0.0.1", 0);
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}
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else
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{
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host = host_create_from_string("::1", 0);
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}
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if (ts->includes(ts, host))
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{
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*ip = host_create_any(family);
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host->destroy(host);
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DBG2(DBG_KNL, "using host %H", *ip);
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return SUCCESS;
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}
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host->destroy(host);
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addrs = create_address_enumerator(this, TRUE, TRUE);
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while (addrs->enumerate(addrs, (void**)&host))
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{
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if (ts->includes(ts, host))
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{
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found = TRUE;
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*ip = host->clone(host);
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break;
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}
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}
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addrs->destroy(addrs);
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if (!found)
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{
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DBG1(DBG_KNL, "no local address found in traffic selector %R", ts);
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return FAILED;
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}
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DBG2(DBG_KNL, "using host %H", *ip);
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return SUCCESS;
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}
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METHOD(kernel_interface_t, add_ipsec_interface, void,
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private_kernel_interface_t *this, kernel_ipsec_constructor_t constructor)
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{
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if (!this->ipsec)
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{
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this->ipsec = constructor();
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}
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}
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METHOD(kernel_interface_t, remove_ipsec_interface, void,
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private_kernel_interface_t *this, kernel_ipsec_constructor_t constructor)
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{
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/* TODO: replace if interface currently in use */
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}
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METHOD(kernel_interface_t, add_net_interface, void,
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private_kernel_interface_t *this, kernel_net_constructor_t constructor)
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{
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if (!this->net)
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{
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this->net = constructor();
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}
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}
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METHOD(kernel_interface_t, remove_net_interface, void,
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private_kernel_interface_t *this, kernel_net_constructor_t constructor)
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{
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/* TODO: replace if interface currently in use */
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}
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METHOD(kernel_interface_t, add_listener, void,
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private_kernel_interface_t *this, kernel_listener_t *listener)
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{
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this->mutex->lock(this->mutex);
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this->listeners->insert_last(this->listeners, listener);
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this->mutex->unlock(this->mutex);
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}
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METHOD(kernel_interface_t, remove_listener, void,
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private_kernel_interface_t *this, kernel_listener_t *listener)
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{
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this->mutex->lock(this->mutex);
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this->listeners->remove(this->listeners, listener, NULL);
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this->mutex->unlock(this->mutex);
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}
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METHOD(kernel_interface_t, acquire, void,
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private_kernel_interface_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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kernel_listener_t *listener;
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enumerator_t *enumerator;
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this->mutex->lock(this->mutex);
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enumerator = this->listeners->create_enumerator(this->listeners);
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while (enumerator->enumerate(enumerator, &listener))
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{
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if (listener->acquire &&
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!listener->acquire(listener, reqid, src_ts, dst_ts))
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{
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this->listeners->remove_at(this->listeners, enumerator);
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}
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}
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enumerator->destroy(enumerator);
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this->mutex->unlock(this->mutex);
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}
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METHOD(kernel_interface_t, expire, void,
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private_kernel_interface_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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kernel_listener_t *listener;
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enumerator_t *enumerator;
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this->mutex->lock(this->mutex);
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enumerator = this->listeners->create_enumerator(this->listeners);
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while (enumerator->enumerate(enumerator, &listener))
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{
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if (listener->expire &&
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!listener->expire(listener, reqid, protocol, spi, hard))
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{
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this->listeners->remove_at(this->listeners, enumerator);
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}
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}
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enumerator->destroy(enumerator);
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this->mutex->unlock(this->mutex);
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}
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METHOD(kernel_interface_t, mapping, void,
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private_kernel_interface_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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kernel_listener_t *listener;
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enumerator_t *enumerator;
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this->mutex->lock(this->mutex);
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enumerator = this->listeners->create_enumerator(this->listeners);
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while (enumerator->enumerate(enumerator, &listener))
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{
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if (listener->mapping &&
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!listener->mapping(listener, reqid, spi, remote))
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{
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this->listeners->remove_at(this->listeners, enumerator);
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}
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}
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enumerator->destroy(enumerator);
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this->mutex->unlock(this->mutex);
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}
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METHOD(kernel_interface_t, migrate, void,
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private_kernel_interface_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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kernel_listener_t *listener;
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enumerator_t *enumerator;
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this->mutex->lock(this->mutex);
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enumerator = this->listeners->create_enumerator(this->listeners);
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while (enumerator->enumerate(enumerator, &listener))
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{
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if (listener->migrate &&
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!listener->migrate(listener, reqid, src_ts, dst_ts, direction,
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local, remote))
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{
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this->listeners->remove_at(this->listeners, enumerator);
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}
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}
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enumerator->destroy(enumerator);
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this->mutex->unlock(this->mutex);
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}
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static bool call_roam(kernel_listener_t *listener, bool *roam)
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{
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return listener->roam && !listener->roam(listener, *roam);
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}
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METHOD(kernel_interface_t, roam, void,
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private_kernel_interface_t *this, bool address)
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{
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this->mutex->lock(this->mutex);
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this->listeners->remove(this->listeners, &address, (void*)call_roam);
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this->mutex->unlock(this->mutex);
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}
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METHOD(kernel_interface_t, destroy, void,
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private_kernel_interface_t *this)
|
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{
|
||||
DESTROY_IF(this->ipsec);
|
||||
DESTROY_IF(this->net);
|
||||
this->mutex->destroy(this->mutex);
|
||||
this->listeners->destroy(this->listeners);
|
||||
free(this);
|
||||
}
|
||||
|
||||
/*
|
||||
* Described in header-file
|
||||
*/
|
||||
kernel_interface_t *kernel_interface_create()
|
||||
{
|
||||
private_kernel_interface_t *this;
|
||||
|
||||
INIT(this,
|
||||
.public = {
|
||||
.get_spi = _get_spi,
|
||||
.get_cpi = _get_cpi,
|
||||
.add_sa = _add_sa,
|
||||
.update_sa = _update_sa,
|
||||
.query_sa = _query_sa,
|
||||
.del_sa = _del_sa,
|
||||
.add_policy = _add_policy,
|
||||
.query_policy = _query_policy,
|
||||
.del_policy = _del_policy,
|
||||
.get_source_addr = _get_source_addr,
|
||||
.get_nexthop = _get_nexthop,
|
||||
.get_interface = _get_interface,
|
||||
.create_address_enumerator = _create_address_enumerator,
|
||||
.add_ip = _add_ip,
|
||||
.del_ip = _del_ip,
|
||||
.add_route = _add_route,
|
||||
.del_route = _del_route,
|
||||
.bypass_socket = _bypass_socket,
|
||||
|
||||
.get_address_by_ts = _get_address_by_ts,
|
||||
.add_ipsec_interface = _add_ipsec_interface,
|
||||
.remove_ipsec_interface = _remove_ipsec_interface,
|
||||
.add_net_interface = _add_net_interface,
|
||||
.remove_net_interface = _remove_net_interface,
|
||||
|
||||
.add_listener = _add_listener,
|
||||
.remove_listener = _remove_listener,
|
||||
.acquire = _acquire,
|
||||
.expire = _expire,
|
||||
.mapping = _mapping,
|
||||
.migrate = _migrate,
|
||||
.roam = _roam,
|
||||
.destroy = _destroy,
|
||||
},
|
||||
.mutex = mutex_create(MUTEX_TYPE_DEFAULT),
|
||||
.listeners = linked_list_create(),
|
||||
);
|
||||
|
||||
return &this->public;
|
||||
}
|
||||
|
||||
@@ -1,483 +0,0 @@
|
||||
/*
|
||||
* Copyright (C) 2006-2010 Tobias Brunner
|
||||
* Copyright (C) 2006 Daniel Roethlisberger
|
||||
* Copyright (C) 2005-2006 Martin Willi
|
||||
* Copyright (C) 2005 Jan Hutter
|
||||
* Hochschule fuer Technik Rapperswil
|
||||
*
|
||||
* 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.
|
||||
*/
|
||||
|
||||
/**
|
||||
* @defgroup kernel_interface kernel_interface
|
||||
* @{ @ingroup kernel
|
||||
*/
|
||||
|
||||
#ifndef KERNEL_INTERFACE_H_
|
||||
#define KERNEL_INTERFACE_H_
|
||||
|
||||
typedef struct kernel_interface_t kernel_interface_t;
|
||||
|
||||
#include <utils/host.h>
|
||||
#include <crypto/prf_plus.h>
|
||||
#include <encoding/payloads/proposal_substructure.h>
|
||||
|
||||
#include <kernel/kernel_listener.h>
|
||||
#include <kernel/kernel_ipsec.h>
|
||||
#include <kernel/kernel_net.h>
|
||||
|
||||
/**
|
||||
* Constructor function for ipsec kernel interface
|
||||
*/
|
||||
typedef kernel_ipsec_t* (*kernel_ipsec_constructor_t)(void);
|
||||
|
||||
/**
|
||||
* Constructor function for network kernel interface
|
||||
*/
|
||||
typedef kernel_net_t* (*kernel_net_constructor_t)(void);
|
||||
|
||||
/**
|
||||
* Manager and wrapper for different kernel interfaces.
|
||||
*
|
||||
* The kernel interface handles the communication with the kernel
|
||||
* for SA and policy management and interface and IP address management.
|
||||
*/
|
||||
struct kernel_interface_t {
|
||||
|
||||
/**
|
||||
* Get a SPI from the kernel.
|
||||
*
|
||||
* @param src source address of SA
|
||||
* @param dst destination address of SA
|
||||
* @param protocol protocol for SA (ESP/AH)
|
||||
* @param reqid unique ID for this SA
|
||||
* @param spi allocated spi
|
||||
* @return SUCCESS if operation completed
|
||||
*/
|
||||
status_t (*get_spi)(kernel_interface_t *this, host_t *src, host_t *dst,
|
||||
u_int8_t protocol, u_int32_t reqid, u_int32_t *spi);
|
||||
|
||||
/**
|
||||
* Get a Compression Parameter Index (CPI) from the kernel.
|
||||
*
|
||||
* @param src source address of SA
|
||||
* @param dst destination address of SA
|
||||
* @param reqid unique ID for the corresponding SA
|
||||
* @param cpi allocated cpi
|
||||
* @return SUCCESS if operation completed
|
||||
*/
|
||||
status_t (*get_cpi)(kernel_interface_t *this, host_t *src, host_t *dst,
|
||||
u_int32_t reqid, u_int16_t *cpi);
|
||||
|
||||
/**
|
||||
* Add an SA to the SAD.
|
||||
*
|
||||
* add_sa() may update an already allocated
|
||||
* SPI (via get_spi). In this case, the replace
|
||||
* flag must be set.
|
||||
* This function does install a single SA for a
|
||||
* single protocol in one direction.
|
||||
*
|
||||
* @param src source address for this SA
|
||||
* @param dst destination address for this SA
|
||||
* @param spi SPI allocated by us or remote peer
|
||||
* @param protocol protocol for this SA (ESP/AH)
|
||||
* @param reqid unique ID for this SA
|
||||
* @param mark optional mark for this SA
|
||||
* @param lifetime lifetime_cfg_t for this SA
|
||||
* @param enc_alg Algorithm to use for encryption (ESP only)
|
||||
* @param enc_key key to use for encryption
|
||||
* @param int_alg Algorithm to use for integrity protection
|
||||
* @param int_key key to use for integrity protection
|
||||
* @param mode mode of the SA (tunnel, transport)
|
||||
* @param ipcomp IPComp transform to use
|
||||
* @param cpi CPI for IPComp
|
||||
* @param encap enable UDP encapsulation for NAT traversal
|
||||
* @param inbound TRUE if this is an inbound SA
|
||||
* @param src_ts traffic selector with BEET source address
|
||||
* @param dst_ts traffic selector with BEET destination address
|
||||
* @return SUCCESS if operation completed
|
||||
*/
|
||||
status_t (*add_sa) (kernel_interface_t *this,
|
||||
host_t *src, host_t *dst, u_int32_t spi,
|
||||
u_int8_t protocol, u_int32_t reqid, mark_t mark,
|
||||
lifetime_cfg_t *lifetime,
|
||||
u_int16_t enc_alg, chunk_t enc_key,
|
||||
u_int16_t int_alg, chunk_t int_key,
|
||||
ipsec_mode_t mode, u_int16_t ipcomp, u_int16_t cpi,
|
||||
bool encap, bool inbound,
|
||||
traffic_selector_t *src_ts, traffic_selector_t *dst_ts);
|
||||
|
||||
/**
|
||||
* Update the hosts on an installed SA.
|
||||
*
|
||||
* We cannot directly update the destination address as the kernel
|
||||
* requires the spi, the protocol AND the destination address (and family)
|
||||
* to identify SAs. Therefore if the destination address changed we
|
||||
* create a new SA and delete the old one.
|
||||
*
|
||||
* @param spi SPI of the SA
|
||||
* @param protocol protocol for this SA (ESP/AH)
|
||||
* @param cpi CPI for IPComp, 0 if no IPComp is used
|
||||
* @param src current source address
|
||||
* @param dst current destination address
|
||||
* @param new_src new source address
|
||||
* @param new_dst new destination address
|
||||
* @param encap current use of UDP encapsulation
|
||||
* @param new_encap new use of UDP encapsulation
|
||||
* @param mark optional mark for this SA
|
||||
* @return SUCCESS if operation completed, NOT_SUPPORTED if
|
||||
* the kernel interface can't update the SA
|
||||
*/
|
||||
status_t (*update_sa)(kernel_interface_t *this,
|
||||
u_int32_t spi, u_int8_t protocol, u_int16_t cpi,
|
||||
host_t *src, host_t *dst,
|
||||
host_t *new_src, host_t *new_dst,
|
||||
bool encap, bool new_encap, mark_t mark);
|
||||
|
||||
/**
|
||||
* Query the number of bytes processed by an SA from the SAD.
|
||||
*
|
||||
* @param src source address for this SA
|
||||
* @param dst destination address for this SA
|
||||
* @param spi SPI allocated by us or remote peer
|
||||
* @param protocol protocol for this SA (ESP/AH)
|
||||
* @param mark optional mark for this SA
|
||||
* @param[out] bytes the number of bytes processed by SA
|
||||
* @return SUCCESS if operation completed
|
||||
*/
|
||||
status_t (*query_sa) (kernel_interface_t *this, host_t *src, host_t *dst,
|
||||
u_int32_t spi, u_int8_t protocol, mark_t mark,
|
||||
u_int64_t *bytes);
|
||||
|
||||
/**
|
||||
* Delete a previously installed SA from the SAD.
|
||||
*
|
||||
* @param src source address for this SA
|
||||
* @param dst destination address for this SA
|
||||
* @param spi SPI allocated by us or remote peer
|
||||
* @param protocol protocol for this SA (ESP/AH)
|
||||
* @param cpi CPI for IPComp or 0
|
||||
* @param mark optional mark for this SA
|
||||
* @return SUCCESS if operation completed
|
||||
*/
|
||||
status_t (*del_sa) (kernel_interface_t *this, host_t *src, host_t *dst,
|
||||
u_int32_t spi, u_int8_t protocol, u_int16_t cpi,
|
||||
mark_t mark);
|
||||
|
||||
/**
|
||||
* Add a policy to the SPD.
|
||||
*
|
||||
* A policy is always associated to an SA. Traffic which matches a
|
||||
* policy is handled by the SA with the same reqid.
|
||||
*
|
||||
* @param src source address of SA
|
||||
* @param dst dest address of SA
|
||||
* @param src_ts traffic selector to match traffic source
|
||||
* @param dst_ts traffic selector to match traffic dest
|
||||
* @param direction direction of traffic, POLICY_(IN|OUT|FWD)
|
||||
* @param spi SPI of SA
|
||||
* @param protocol protocol to use to protect traffic (AH/ESP)
|
||||
* @param reqid unique ID of an SA to use to enforce policy
|
||||
* @param mark mark for this policy
|
||||
* @param mode mode of SA (tunnel, transport)
|
||||
* @param ipcomp the IPComp transform used
|
||||
* @param cpi CPI for IPComp
|
||||
* @param routed TRUE, if this policy is routed in the kernel
|
||||
* @return SUCCESS if operation completed
|
||||
*/
|
||||
status_t (*add_policy) (kernel_interface_t *this,
|
||||
host_t *src, host_t *dst,
|
||||
traffic_selector_t *src_ts,
|
||||
traffic_selector_t *dst_ts,
|
||||
policy_dir_t direction, u_int32_t spi,
|
||||
u_int8_t protocol, u_int32_t reqid,
|
||||
mark_t mark, ipsec_mode_t mode, u_int16_t ipcomp,
|
||||
u_int16_t cpi, bool routed);
|
||||
|
||||
/**
|
||||
* Query the use time of a policy.
|
||||
*
|
||||
* The use time of a policy is the time the policy was used
|
||||
* for the last time.
|
||||
*
|
||||
* @param src_ts traffic selector to match traffic source
|
||||
* @param dst_ts traffic selector to match traffic dest
|
||||
* @param direction direction of traffic, POLICY_(IN|OUT|FWD)
|
||||
* @param mark optional mark
|
||||
* @param[out] use_time the time of this SA's last use
|
||||
* @return SUCCESS if operation completed
|
||||
*/
|
||||
status_t (*query_policy) (kernel_interface_t *this,
|
||||
traffic_selector_t *src_ts,
|
||||
traffic_selector_t *dst_ts,
|
||||
policy_dir_t direction, mark_t mark,
|
||||
u_int32_t *use_time);
|
||||
|
||||
/**
|
||||
* Remove a policy from the SPD.
|
||||
*
|
||||
* The kernel interface implements reference counting for policies.
|
||||
* If the same policy is installed multiple times (in the case of rekeying),
|
||||
* the reference counter is increased. del_policy() decreases the ref counter
|
||||
* and removes the policy only when no more references are available.
|
||||
*
|
||||
* @param src_ts traffic selector to match traffic source
|
||||
* @param dst_ts traffic selector to match traffic dest
|
||||
* @param direction direction of traffic, POLICY_(IN|OUT|FWD)
|
||||
* @param mark optional mark
|
||||
* @param unrouted TRUE, if this policy is unrouted from the kernel
|
||||
* @return SUCCESS if operation completed
|
||||
*/
|
||||
status_t (*del_policy) (kernel_interface_t *this,
|
||||
traffic_selector_t *src_ts,
|
||||
traffic_selector_t *dst_ts,
|
||||
policy_dir_t direction, mark_t mark,
|
||||
bool unrouted);
|
||||
|
||||
/**
|
||||
* Get our outgoing source address for a destination.
|
||||
*
|
||||
* Does a route lookup to get the source address used to reach dest.
|
||||
* The returned host is allocated and must be destroyed.
|
||||
* An optional src address can be used to check if a route is available
|
||||
* for given source to dest.
|
||||
*
|
||||
* @param dest target destination address
|
||||
* @param src source address to check, or NULL
|
||||
* @return outgoing source address, NULL if unreachable
|
||||
*/
|
||||
host_t* (*get_source_addr)(kernel_interface_t *this,
|
||||
host_t *dest, host_t *src);
|
||||
|
||||
/**
|
||||
* Get the next hop for a destination.
|
||||
*
|
||||
* Does a route lookup to get the next hop used to reach dest.
|
||||
* The returned host is allocated and must be destroyed.
|
||||
*
|
||||
* @param dest target destination address
|
||||
* @return next hop address, NULL if unreachable
|
||||
*/
|
||||
host_t* (*get_nexthop)(kernel_interface_t *this, host_t *dest);
|
||||
|
||||
/**
|
||||
* Get the interface name of a local address.
|
||||
*
|
||||
* @param host address to get interface name from
|
||||
* @return allocated interface name, or NULL if not found
|
||||
*/
|
||||
char* (*get_interface) (kernel_interface_t *this, host_t *host);
|
||||
|
||||
/**
|
||||
* Creates an enumerator over all local addresses.
|
||||
*
|
||||
* This function blocks an internal cached address list until the
|
||||
* enumerator gets destroyed.
|
||||
* The hosts are read-only, do not modify of free.
|
||||
*
|
||||
* @param include_down_ifaces TRUE to enumerate addresses from down interfaces
|
||||
* @param include_virtual_ips TRUE to enumerate virtual ip addresses
|
||||
* @return enumerator over host_t's
|
||||
*/
|
||||
enumerator_t *(*create_address_enumerator) (kernel_interface_t *this,
|
||||
bool include_down_ifaces, bool include_virtual_ips);
|
||||
|
||||
/**
|
||||
* Add a virtual IP to an interface.
|
||||
*
|
||||
* Virtual IPs are attached to an interface. If an IP is added multiple
|
||||
* times, the IP is refcounted and not removed until del_ip() was called
|
||||
* as many times as add_ip().
|
||||
* The virtual IP is attached to the interface where the iface_ip is found.
|
||||
*
|
||||
* @param virtual_ip virtual ip address to assign
|
||||
* @param iface_ip IP of an interface to attach virtual IP
|
||||
* @return SUCCESS if operation completed
|
||||
*/
|
||||
status_t (*add_ip) (kernel_interface_t *this, host_t *virtual_ip,
|
||||
host_t *iface_ip);
|
||||
|
||||
/**
|
||||
* Remove a virtual IP from an interface.
|
||||
*
|
||||
* The kernel interface uses refcounting, see add_ip().
|
||||
*
|
||||
* @param virtual_ip virtual ip address to assign
|
||||
* @return SUCCESS if operation completed
|
||||
*/
|
||||
status_t (*del_ip) (kernel_interface_t *this, host_t *virtual_ip);
|
||||
|
||||
/**
|
||||
* Add a route.
|
||||
*
|
||||
* @param dst_net destination net
|
||||
* @param prefixlen destination net prefix length
|
||||
* @param gateway gateway for this route
|
||||
* @param src_ip sourc ip of the route
|
||||
* @param if_name name of the interface the route is bound to
|
||||
* @return SUCCESS if operation completed
|
||||
* ALREADY_DONE if the route already exists
|
||||
*/
|
||||
status_t (*add_route) (kernel_interface_t *this, chunk_t dst_net,
|
||||
u_int8_t prefixlen, host_t *gateway, host_t *src_ip,
|
||||
char *if_name);
|
||||
|
||||
/**
|
||||
* Delete a route.
|
||||
*
|
||||
* @param dst_net destination net
|
||||
* @param prefixlen destination net prefix length
|
||||
* @param gateway gateway for this route
|
||||
* @param src_ip sourc ip of the route
|
||||
* @param if_name name of the interface the route is bound to
|
||||
* @return SUCCESS if operation completed
|
||||
*/
|
||||
status_t (*del_route) (kernel_interface_t *this, chunk_t dst_net,
|
||||
u_int8_t prefixlen, host_t *gateway, host_t *src_ip,
|
||||
char *if_name);
|
||||
|
||||
/**
|
||||
* Set up a bypass policy for a given socket.
|
||||
*
|
||||
* @param fd socket file descriptor to setup policy for
|
||||
* @param family protocol family of the socket
|
||||
* @return TRUE of policy set up successfully
|
||||
*/
|
||||
bool (*bypass_socket)(kernel_interface_t *this, int fd, int family);
|
||||
|
||||
/**
|
||||
* manager methods
|
||||
*/
|
||||
|
||||
/**
|
||||
* Tries to find an ip address of a local interface that is included in the
|
||||
* supplied traffic selector.
|
||||
*
|
||||
* @param ts traffic selector
|
||||
* @param ip returned ip (has to be destroyed)
|
||||
* @return SUCCESS if address found
|
||||
*/
|
||||
status_t (*get_address_by_ts)(kernel_interface_t *this,
|
||||
traffic_selector_t *ts, host_t **ip);
|
||||
|
||||
/**
|
||||
* Register an ipsec kernel interface constructor on the manager.
|
||||
*
|
||||
* @param create constructor to register
|
||||
*/
|
||||
void (*add_ipsec_interface)(kernel_interface_t *this,
|
||||
kernel_ipsec_constructor_t create);
|
||||
|
||||
/**
|
||||
* Unregister an ipsec kernel interface constructor.
|
||||
*
|
||||
* @param create constructor to unregister
|
||||
*/
|
||||
void (*remove_ipsec_interface)(kernel_interface_t *this,
|
||||
kernel_ipsec_constructor_t create);
|
||||
|
||||
/**
|
||||
* Register a network kernel interface constructor on the manager.
|
||||
*
|
||||
* @param create constructor to register
|
||||
*/
|
||||
void (*add_net_interface)(kernel_interface_t *this,
|
||||
kernel_net_constructor_t create);
|
||||
|
||||
/**
|
||||
* Unregister a network kernel interface constructor.
|
||||
*
|
||||
* @param create constructor to unregister
|
||||
*/
|
||||
void (*remove_net_interface)(kernel_interface_t *this,
|
||||
kernel_net_constructor_t create);
|
||||
|
||||
/**
|
||||
* Add a listener to the kernel interface.
|
||||
*
|
||||
* @param listener listener to add
|
||||
*/
|
||||
void (*add_listener)(kernel_interface_t *this,
|
||||
kernel_listener_t *listener);
|
||||
|
||||
/**
|
||||
* Remove a listener from the kernel interface.
|
||||
*
|
||||
* @param listener listener to remove
|
||||
*/
|
||||
void (*remove_listener)(kernel_interface_t *this,
|
||||
kernel_listener_t *listener);
|
||||
|
||||
/**
|
||||
* Raise an acquire event.
|
||||
*
|
||||
* @param reqid reqid of the policy to acquire
|
||||
* @param src_ts source traffic selector
|
||||
* @param dst_ts destination traffic selector
|
||||
*/
|
||||
void (*acquire)(kernel_interface_t *this, u_int32_t reqid,
|
||||
traffic_selector_t *src_ts, traffic_selector_t *dst_ts);
|
||||
|
||||
/**
|
||||
* Raise an expire event.
|
||||
*
|
||||
* @param reqid reqid of the expired SA
|
||||
* @param protocol protocol of the expired SA
|
||||
* @param spi spi of the expired SA
|
||||
* @param hard TRUE if it is a hard expire, FALSE otherwise
|
||||
*/
|
||||
void (*expire)(kernel_interface_t *this, u_int32_t reqid,
|
||||
u_int8_t protocol, u_int32_t spi, bool hard);
|
||||
|
||||
/**
|
||||
* Raise a mapping event.
|
||||
*
|
||||
* @param reqid reqid of the SA
|
||||
* @param spi spi of the SA
|
||||
* @param remote new remote host
|
||||
*/
|
||||
void (*mapping)(kernel_interface_t *this, u_int32_t reqid, u_int32_t spi,
|
||||
host_t *remote);
|
||||
|
||||
/**
|
||||
* Raise a migrate event.
|
||||
*
|
||||
* @param reqid reqid of the policy
|
||||
* @param src_ts source traffic selector
|
||||
* @param dst_ts destination traffic selector
|
||||
* @param direction direction of the policy (in|out)
|
||||
* @param local local host address to be used in the IKE_SA
|
||||
* @param remote remote host address to be used in the IKE_SA
|
||||
*/
|
||||
void (*migrate)(kernel_interface_t *this, u_int32_t reqid,
|
||||
traffic_selector_t *src_ts, traffic_selector_t *dst_ts,
|
||||
policy_dir_t direction, host_t *local, host_t *remote);
|
||||
|
||||
/**
|
||||
* Raise a roam event.
|
||||
*
|
||||
* @param address TRUE if address list, FALSE if routing changed
|
||||
*/
|
||||
void (*roam)(kernel_interface_t *this, bool address);
|
||||
|
||||
/**
|
||||
* Destroys a kernel_interface_manager_t object.
|
||||
*/
|
||||
void (*destroy) (kernel_interface_t *this);
|
||||
};
|
||||
|
||||
/**
|
||||
* Creates an object of type kernel_interface_t.
|
||||
*/
|
||||
kernel_interface_t *kernel_interface_create(void);
|
||||
|
||||
#endif /** KERNEL_INTERFACE_H_ @}*/
|
||||
@@ -1,29 +0,0 @@
|
||||
/*
|
||||
* Copyright (C) 2008 Tobias Brunner
|
||||
* Hochschule fuer Technik Rapperswil
|
||||
*
|
||||
* 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 "kernel_ipsec.h"
|
||||
|
||||
ENUM(ipsec_mode_names, MODE_TRANSPORT, MODE_BEET,
|
||||
"TRANSPORT",
|
||||
"TUNNEL",
|
||||
"BEET",
|
||||
);
|
||||
|
||||
ENUM(policy_dir_names, POLICY_IN, POLICY_FWD,
|
||||
"in",
|
||||
"out",
|
||||
"fwd"
|
||||
);
|
||||
|
||||
@@ -1,292 +0,0 @@
|
||||
/*
|
||||
* Copyright (C) 2006-2010 Tobias Brunner
|
||||
* Copyright (C) 2006 Daniel Roethlisberger
|
||||
* Copyright (C) 2005-2006 Martin Willi
|
||||
* Copyright (C) 2005 Jan Hutter
|
||||
* Hochschule fuer Technik Rapperswil
|
||||
*
|
||||
* 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.
|
||||
*/
|
||||
|
||||
/**
|
||||
* @defgroup kernel_ipsec kernel_ipsec
|
||||
* @{ @ingroup kernel
|
||||
*/
|
||||
|
||||
#ifndef KERNEL_IPSEC_H_
|
||||
#define KERNEL_IPSEC_H_
|
||||
|
||||
typedef enum ipsec_mode_t ipsec_mode_t;
|
||||
typedef enum policy_dir_t policy_dir_t;
|
||||
typedef struct kernel_ipsec_t kernel_ipsec_t;
|
||||
|
||||
#include <utils/host.h>
|
||||
#include <crypto/prf_plus.h>
|
||||
#include <config/proposal.h>
|
||||
#include <config/child_cfg.h>
|
||||
|
||||
/**
|
||||
* Mode of a CHILD_SA.
|
||||
*/
|
||||
enum ipsec_mode_t {
|
||||
/** transport mode, no inner address */
|
||||
MODE_TRANSPORT = 1,
|
||||
/** tunnel mode, inner and outer addresses */
|
||||
MODE_TUNNEL,
|
||||
/** BEET mode, tunnel mode but fixed, bound inner addresses */
|
||||
MODE_BEET,
|
||||
};
|
||||
|
||||
/**
|
||||
* enum names for ipsec_mode_t.
|
||||
*/
|
||||
extern enum_name_t *ipsec_mode_names;
|
||||
|
||||
/**
|
||||
* Direction of a policy. These are equal to those
|
||||
* defined in xfrm.h, but we want to stay implementation
|
||||
* neutral here.
|
||||
*/
|
||||
enum policy_dir_t {
|
||||
/** Policy for inbound traffic */
|
||||
POLICY_IN = 0,
|
||||
/** Policy for outbound traffic */
|
||||
POLICY_OUT = 1,
|
||||
/** Policy for forwarded traffic */
|
||||
POLICY_FWD = 2,
|
||||
};
|
||||
|
||||
/**
|
||||
* enum names for policy_dir_t.
|
||||
*/
|
||||
extern enum_name_t *policy_dir_names;
|
||||
|
||||
/**
|
||||
* Interface to the ipsec subsystem of the kernel.
|
||||
*
|
||||
* The kernel ipsec interface handles the communication with the kernel
|
||||
* for SA and policy management. It allows setup of these, and provides
|
||||
* further the handling of kernel events.
|
||||
* Policy information are cached in the interface. This is necessary to do
|
||||
* reference counting. The Linux kernel does not allow the same policy
|
||||
* installed twice, but we need this as CHILD_SA exist multiple times
|
||||
* when rekeying. Thats why we do reference counting of policies.
|
||||
*/
|
||||
struct kernel_ipsec_t {
|
||||
|
||||
/**
|
||||
* Get a SPI from the kernel.
|
||||
*
|
||||
* @param src source address of SA
|
||||
* @param dst destination address of SA
|
||||
* @param protocol protocol for SA (ESP/AH)
|
||||
* @param reqid unique ID for this SA
|
||||
* @param spi allocated spi
|
||||
* @return SUCCESS if operation completed
|
||||
*/
|
||||
status_t (*get_spi)(kernel_ipsec_t *this, host_t *src, host_t *dst,
|
||||
u_int8_t protocol, u_int32_t reqid, u_int32_t *spi);
|
||||
|
||||
/**
|
||||
* Get a Compression Parameter Index (CPI) from the kernel.
|
||||
*
|
||||
* @param src source address of SA
|
||||
* @param dst destination address of SA
|
||||
* @param reqid unique ID for the corresponding SA
|
||||
* @param cpi allocated cpi
|
||||
* @return SUCCESS if operation completed
|
||||
*/
|
||||
status_t (*get_cpi)(kernel_ipsec_t *this, host_t *src, host_t *dst,
|
||||
u_int32_t reqid, u_int16_t *cpi);
|
||||
|
||||
/**
|
||||
* Add an SA to the SAD.
|
||||
*
|
||||
* add_sa() may update an already allocated
|
||||
* SPI (via get_spi). In this case, the replace
|
||||
* flag must be set.
|
||||
* This function does install a single SA for a
|
||||
* single protocol in one direction.
|
||||
*
|
||||
* @param src source address for this SA
|
||||
* @param dst destination address for this SA
|
||||
* @param spi SPI allocated by us or remote peer
|
||||
* @param protocol protocol for this SA (ESP/AH)
|
||||
* @param reqid unique ID for this SA
|
||||
* @param mark mark for this SA
|
||||
* @param lifetime lifetime_cfg_t for this SA
|
||||
* @param enc_alg Algorithm to use for encryption (ESP only)
|
||||
* @param enc_key key to use for encryption
|
||||
* @param int_alg Algorithm to use for integrity protection
|
||||
* @param int_key key to use for integrity protection
|
||||
* @param mode mode of the SA (tunnel, transport)
|
||||
* @param ipcomp IPComp transform to use
|
||||
* @param cpi CPI for IPComp
|
||||
* @param encap enable UDP encapsulation for NAT traversal
|
||||
* @param inbound TRUE if this is an inbound SA
|
||||
* @param src_ts traffic selector with BEET source address
|
||||
* @param dst_ts traffic selector with BEET destination address
|
||||
* @return SUCCESS if operation completed
|
||||
*/
|
||||
status_t (*add_sa) (kernel_ipsec_t *this,
|
||||
host_t *src, host_t *dst, u_int32_t spi,
|
||||
u_int8_t protocol, u_int32_t reqid,
|
||||
mark_t mark, lifetime_cfg_t *lifetime,
|
||||
u_int16_t enc_alg, chunk_t enc_key,
|
||||
u_int16_t int_alg, chunk_t int_key,
|
||||
ipsec_mode_t mode, u_int16_t ipcomp, u_int16_t cpi,
|
||||
bool encap, bool inbound,
|
||||
traffic_selector_t *src_ts, traffic_selector_t *dst_ts);
|
||||
|
||||
/**
|
||||
* Update the hosts on an installed SA.
|
||||
*
|
||||
* We cannot directly update the destination address as the kernel
|
||||
* requires the spi, the protocol AND the destination address (and family)
|
||||
* to identify SAs. Therefore if the destination address changed we
|
||||
* create a new SA and delete the old one.
|
||||
*
|
||||
* @param spi SPI of the SA
|
||||
* @param protocol protocol for this SA (ESP/AH)
|
||||
* @param cpi CPI for IPComp, 0 if no IPComp is used
|
||||
* @param src current source address
|
||||
* @param dst current destination address
|
||||
* @param new_src new source address
|
||||
* @param new_dst new destination address
|
||||
* @param encap current use of UDP encapsulation
|
||||
* @param new_encap new use of UDP encapsulation
|
||||
* @param mark optional mark for this SA
|
||||
* @return SUCCESS if operation completed, NOT_SUPPORTED if
|
||||
* the kernel interface can't update the SA
|
||||
*/
|
||||
status_t (*update_sa)(kernel_ipsec_t *this,
|
||||
u_int32_t spi, u_int8_t protocol, u_int16_t cpi,
|
||||
host_t *src, host_t *dst,
|
||||
host_t *new_src, host_t *new_dst,
|
||||
bool encap, bool new_encap, mark_t mark);
|
||||
|
||||
/**
|
||||
* Query the number of bytes processed by an SA from the SAD.
|
||||
*
|
||||
* @param src source address for this SA
|
||||
* @param dst destination address for this SA
|
||||
* @param spi SPI allocated by us or remote peer
|
||||
* @param protocol protocol for this SA (ESP/AH)
|
||||
* @param mark optional mark for this SA
|
||||
* @param[out] bytes the number of bytes processed by SA
|
||||
* @return SUCCESS if operation completed
|
||||
*/
|
||||
status_t (*query_sa) (kernel_ipsec_t *this, host_t *src, host_t *dst,
|
||||
u_int32_t spi, u_int8_t protocol, mark_t mark,
|
||||
u_int64_t *bytes);
|
||||
|
||||
/**
|
||||
* Delete a previusly installed SA from the SAD.
|
||||
*
|
||||
* @param src source address for this SA
|
||||
* @param dst destination address for this SA
|
||||
* @param spi SPI allocated by us or remote peer
|
||||
* @param protocol protocol for this SA (ESP/AH)
|
||||
* @param cpi CPI for IPComp or 0
|
||||
* @param mark optional mark for this SA
|
||||
* @return SUCCESS if operation completed
|
||||
*/
|
||||
status_t (*del_sa) (kernel_ipsec_t *this, host_t *src, host_t *dst,
|
||||
u_int32_t spi, u_int8_t protocol, u_int16_t cpi,
|
||||
mark_t mark);
|
||||
|
||||
/**
|
||||
* Add a policy to the SPD.
|
||||
*
|
||||
* A policy is always associated to an SA. Traffic which matches a
|
||||
* policy is handled by the SA with the same reqid.
|
||||
*
|
||||
* @param src source address of SA
|
||||
* @param dst dest address of SA
|
||||
* @param src_ts traffic selector to match traffic source
|
||||
* @param dst_ts traffic selector to match traffic dest
|
||||
* @param direction direction of traffic, POLICY_(IN|OUT|FWD)
|
||||
* @param spi SPI of SA
|
||||
* @param protocol protocol to use to protect traffic (AH/ESP)
|
||||
* @param reqid unique ID of an SA to use to enforce policy
|
||||
* @param mark mark for this policy
|
||||
* @param mode mode of SA (tunnel, transport)
|
||||
* @param ipcomp the IPComp transform used
|
||||
* @param cpi CPI for IPComp
|
||||
* @param routed TRUE, if this policy is routed in the kernel
|
||||
* @return SUCCESS if operation completed
|
||||
*/
|
||||
status_t (*add_policy) (kernel_ipsec_t *this,
|
||||
host_t *src, host_t *dst,
|
||||
traffic_selector_t *src_ts,
|
||||
traffic_selector_t *dst_ts,
|
||||
policy_dir_t direction, u_int32_t spi,
|
||||
u_int8_t protocol, u_int32_t reqid,
|
||||
mark_t mark, ipsec_mode_t mode,
|
||||
u_int16_t ipcomp, u_int16_t cpi, bool routed);
|
||||
|
||||
/**
|
||||
* Query the use time of a policy.
|
||||
*
|
||||
* The use time of a policy is the time the policy was used for the last
|
||||
* time. It is not the system time, but a monotonic timestamp as returned
|
||||
* by time_monotonic.
|
||||
*
|
||||
* @param src_ts traffic selector to match traffic source
|
||||
* @param dst_ts traffic selector to match traffic dest
|
||||
* @param direction direction of traffic, POLICY_(IN|OUT|FWD)
|
||||
* @param mark optional mark
|
||||
* @param[out] use_time the monotonic timestamp of this SA's last use
|
||||
* @return SUCCESS if operation completed
|
||||
*/
|
||||
status_t (*query_policy) (kernel_ipsec_t *this,
|
||||
traffic_selector_t *src_ts,
|
||||
traffic_selector_t *dst_ts,
|
||||
policy_dir_t direction, mark_t mark,
|
||||
u_int32_t *use_time);
|
||||
|
||||
/**
|
||||
* Remove a policy from the SPD.
|
||||
*
|
||||
* The kernel interface implements reference counting for policies.
|
||||
* If the same policy is installed multiple times (in the case of rekeying),
|
||||
* the reference counter is increased. del_policy() decreases the ref counter
|
||||
* and removes the policy only when no more references are available.
|
||||
*
|
||||
* @param src_ts traffic selector to match traffic source
|
||||
* @param dst_ts traffic selector to match traffic dest
|
||||
* @param direction direction of traffic, POLICY_(IN|OUT|FWD)
|
||||
* @param mark optional mark
|
||||
* @param unrouted TRUE, if this policy is unrouted from the kernel
|
||||
* @return SUCCESS if operation completed
|
||||
*/
|
||||
status_t (*del_policy) (kernel_ipsec_t *this,
|
||||
traffic_selector_t *src_ts,
|
||||
traffic_selector_t *dst_ts,
|
||||
policy_dir_t direction, mark_t mark,
|
||||
bool unrouted);
|
||||
|
||||
/**
|
||||
* Install a bypass policy for the given socket.
|
||||
*
|
||||
* @param fd socket file descriptor to setup policy for
|
||||
* @param family protocol family of the socket
|
||||
* @return TRUE of policy set up successfully
|
||||
*/
|
||||
bool (*bypass_socket)(kernel_ipsec_t *this, int fd, int family);
|
||||
|
||||
/**
|
||||
* Destroy the implementation.
|
||||
*/
|
||||
void (*destroy) (kernel_ipsec_t *this);
|
||||
};
|
||||
|
||||
#endif /** KERNEL_IPSEC_H_ @}*/
|
||||
@@ -1,96 +0,0 @@
|
||||
/*
|
||||
* Copyright (C) 2010 Tobias Brunner
|
||||
* Hochschule fuer Technik Rapperswil
|
||||
*
|
||||
* 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.
|
||||
*/
|
||||
|
||||
/**
|
||||
* @defgroup kernel_listener kernel_listener
|
||||
* @{ @ingroup kernel
|
||||
*/
|
||||
|
||||
#ifndef KERNEL_LISTENER_H_
|
||||
#define KERNEL_LISTENER_H_
|
||||
|
||||
typedef struct kernel_listener_t kernel_listener_t;
|
||||
|
||||
#include <kernel/kernel_ipsec.h>
|
||||
#include <selectors/traffic_selector.h>
|
||||
#include <utils/host.h>
|
||||
|
||||
/**
|
||||
* Interface for components interested in kernel events.
|
||||
*
|
||||
* All hooks are optional.
|
||||
*/
|
||||
struct kernel_listener_t {
|
||||
|
||||
/**
|
||||
* Hook called if an acquire event for a policy is received.
|
||||
*
|
||||
* @param reqid reqid of the policy to acquire
|
||||
* @param src_ts source traffic selector
|
||||
* @param dst_ts destination traffic selector
|
||||
* @return TRUE to remain registered, FALSE to unregister
|
||||
*/
|
||||
bool (*acquire)(kernel_listener_t *this, u_int32_t reqid,
|
||||
traffic_selector_t *src_ts, traffic_selector_t *dst_ts);
|
||||
|
||||
/**
|
||||
* Hook called if an exire event for an IPsec SA is received.
|
||||
*
|
||||
* @param reqid reqid of the expired SA
|
||||
* @param protocol protocol of the expired SA
|
||||
* @param spi spi of the expired SA
|
||||
* @param hard TRUE if it is a hard expire, FALSE otherwise
|
||||
* @return TRUE to remain registered, FALSE to unregister
|
||||
*/
|
||||
bool (*expire)(kernel_listener_t *this, u_int32_t reqid,
|
||||
u_int8_t protocol, u_int32_t spi, bool hard);
|
||||
|
||||
/**
|
||||
* Hook called if the NAT mappings of an IPsec SA changed.
|
||||
*
|
||||
* @param reqid reqid of the SA
|
||||
* @param spi spi of the SA
|
||||
* @param remote new remote host
|
||||
* @return TRUE to remain registered, FALSE to unregister
|
||||
*/
|
||||
bool (*mapping)(kernel_listener_t *this, u_int32_t reqid, u_int32_t spi,
|
||||
host_t *remote);
|
||||
|
||||
/**
|
||||
* Hook called if a migrate event for a policy is received.
|
||||
*
|
||||
* @param reqid reqid of the policy
|
||||
* @param src_ts source traffic selector
|
||||
* @param dst_ts destination traffic selector
|
||||
* @param direction direction of the policy (in|out)
|
||||
* @param local local host address to be used in the IKE_SA
|
||||
* @param remote remote host address to be used in the IKE_SA
|
||||
* @return TRUE to remain registered, FALSE to unregister
|
||||
*/
|
||||
bool (*migrate)(kernel_listener_t *this, u_int32_t reqid,
|
||||
traffic_selector_t *src_ts, traffic_selector_t *dst_ts,
|
||||
policy_dir_t direction, host_t *local, host_t *remote);
|
||||
|
||||
/**
|
||||
* Hook called if changes in the networking layer occured (interfaces
|
||||
* up/down, routes added/deleted etc.).
|
||||
*
|
||||
* @param address TRUE if address list, FALSE if routing changed
|
||||
* @return TRUE to remain registered, FALSE to unregister
|
||||
*/
|
||||
bool (*roam)(kernel_listener_t *this, bool address);
|
||||
};
|
||||
|
||||
#endif /** KERNEL_LISTENER_H_ @}*/
|
||||
@@ -1,145 +0,0 @@
|
||||
/*
|
||||
* Copyright (C) 2008 Tobias Brunner
|
||||
* Copyright (C) 2007 Martin Willi
|
||||
* Hochschule fuer Technik Rapperswil
|
||||
*
|
||||
* 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.
|
||||
*/
|
||||
|
||||
/**
|
||||
* @defgroup kernel_net kernel_net
|
||||
* @{ @ingroup kernel
|
||||
*/
|
||||
|
||||
#ifndef KERNEL_NET_H_
|
||||
#define KERNEL_NET_H_
|
||||
|
||||
typedef struct kernel_net_t kernel_net_t;
|
||||
|
||||
#include <utils/enumerator.h>
|
||||
#include <utils/host.h>
|
||||
|
||||
/**
|
||||
* Interface to the network subsystem of the kernel.
|
||||
*
|
||||
* The kernel network interface handles the communication with the kernel
|
||||
* for interface and IP address management.
|
||||
*/
|
||||
struct kernel_net_t {
|
||||
|
||||
/**
|
||||
* Get our outgoing source address for a destination.
|
||||
*
|
||||
* Does a route lookup to get the source address used to reach dest.
|
||||
* The returned host is allocated and must be destroyed.
|
||||
* An optional src address can be used to check if a route is available
|
||||
* for given source to dest.
|
||||
*
|
||||
* @param dest target destination address
|
||||
* @param src source address to check, or NULL
|
||||
* @return outgoing source address, NULL if unreachable
|
||||
*/
|
||||
host_t* (*get_source_addr)(kernel_net_t *this, host_t *dest, host_t *src);
|
||||
|
||||
/**
|
||||
* Get the next hop for a destination.
|
||||
*
|
||||
* Does a route lookup to get the next hop used to reach dest.
|
||||
* The returned host is allocated and must be destroyed.
|
||||
*
|
||||
* @param dest target destination address
|
||||
* @return next hop address, NULL if unreachable
|
||||
*/
|
||||
host_t* (*get_nexthop)(kernel_net_t *this, host_t *dest);
|
||||
|
||||
/**
|
||||
* Get the interface name of a local address.
|
||||
*
|
||||
* @param host address to get interface name from
|
||||
* @return allocated interface name, or NULL if not found
|
||||
*/
|
||||
char* (*get_interface) (kernel_net_t *this, host_t *host);
|
||||
|
||||
/**
|
||||
* Creates an enumerator over all local addresses.
|
||||
*
|
||||
* This function blocks an internal cached address list until the
|
||||
* enumerator gets destroyed.
|
||||
* The hosts are read-only, do not modify of free.
|
||||
*
|
||||
* @param include_down_ifaces TRUE to enumerate addresses from down interfaces
|
||||
* @param include_virtual_ips TRUE to enumerate virtual ip addresses
|
||||
* @return enumerator over host_t's
|
||||
*/
|
||||
enumerator_t *(*create_address_enumerator) (kernel_net_t *this,
|
||||
bool include_down_ifaces, bool include_virtual_ips);
|
||||
|
||||
/**
|
||||
* Add a virtual IP to an interface.
|
||||
*
|
||||
* Virtual IPs are attached to an interface. If an IP is added multiple
|
||||
* times, the IP is refcounted and not removed until del_ip() was called
|
||||
* as many times as add_ip().
|
||||
* The virtual IP is attached to the interface where the iface_ip is found.
|
||||
*
|
||||
* @param virtual_ip virtual ip address to assign
|
||||
* @param iface_ip IP of an interface to attach virtual IP
|
||||
* @return SUCCESS if operation completed
|
||||
*/
|
||||
status_t (*add_ip) (kernel_net_t *this, host_t *virtual_ip,
|
||||
host_t *iface_ip);
|
||||
|
||||
/**
|
||||
* Remove a virtual IP from an interface.
|
||||
*
|
||||
* The kernel interface uses refcounting, see add_ip().
|
||||
*
|
||||
* @param virtual_ip virtual ip address to assign
|
||||
* @return SUCCESS if operation completed
|
||||
*/
|
||||
status_t (*del_ip) (kernel_net_t *this, host_t *virtual_ip);
|
||||
|
||||
/**
|
||||
* Add a route.
|
||||
*
|
||||
* @param dst_net destination net
|
||||
* @param prefixlen destination net prefix length
|
||||
* @param gateway gateway for this route
|
||||
* @param src_ip sourc ip of the route
|
||||
* @param if_name name of the interface the route is bound to
|
||||
* @return SUCCESS if operation completed
|
||||
* ALREADY_DONE if the route already exists
|
||||
*/
|
||||
status_t (*add_route) (kernel_net_t *this, chunk_t dst_net,
|
||||
u_int8_t prefixlen, host_t *gateway, host_t *src_ip,
|
||||
char *if_name);
|
||||
|
||||
/**
|
||||
* Delete a route.
|
||||
*
|
||||
* @param dst_net destination net
|
||||
* @param prefixlen destination net prefix length
|
||||
* @param gateway gateway for this route
|
||||
* @param src_ip sourc ip of the route
|
||||
* @param if_name name of the interface the route is bound to
|
||||
* @return SUCCESS if operation completed
|
||||
*/
|
||||
status_t (*del_route) (kernel_net_t *this, chunk_t dst_net,
|
||||
u_int8_t prefixlen, host_t *gateway, host_t *src_ip,
|
||||
char *if_name);
|
||||
|
||||
/**
|
||||
* Destroy the implementation.
|
||||
*/
|
||||
void (*destroy) (kernel_net_t *this);
|
||||
};
|
||||
|
||||
#endif /** KERNEL_NET_H_ @}*/
|
||||
Reference in New Issue
Block a user