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Moved kernel interface to libhydra.

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This commit is contained in:
Tobias Brunner
2010-09-02 19:01:25 +02:00
parent 9f166d9ac2
commit 6f449d2efd
16 changed files with 61 additions and 60 deletions
Download Patch File Download Diff File Expand all files Collapse all files
src/libcharon/Android.mk
-4
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@@ -41,10 +41,6 @@ encoding/payloads/ts_payload.c encoding/payloads/ts_payload.h \
encoding/payloads/unknown_payload.c encoding/payloads/unknown_payload.h \
encoding/payloads/vendor_id_payload.c encoding/payloads/vendor_id_payload.h \
kernel/kernel_handler.c kernel/kernel_handler.h \
kernel/kernel_interface.c kernel/kernel_interface.h \
kernel/kernel_ipsec.c kernel/kernel_ipsec.h \
kernel/kernel_net.h \
kernel/kernel_listener.h \
network/packet.c network/packet.h \
network/receiver.c network/receiver.h \
network/sender.c network/sender.h \
src/libcharon/Makefile.am
-4
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@@ -39,10 +39,6 @@ encoding/payloads/ts_payload.c encoding/payloads/ts_payload.h \
encoding/payloads/unknown_payload.c encoding/payloads/unknown_payload.h \
encoding/payloads/vendor_id_payload.c encoding/payloads/vendor_id_payload.h \
kernel/kernel_handler.c kernel/kernel_handler.h \
kernel/kernel_interface.c kernel/kernel_interface.h \
kernel/kernel_ipsec.c kernel/kernel_ipsec.h \
kernel/kernel_net.h \
kernel/kernel_listener.h \
network/packet.c network/packet.h \
network/receiver.c network/receiver.h \
network/sender.c network/sender.h \
src/libcharon/config/child_cfg.h
+4 -32
View File
@@ -25,8 +25,6 @@
typedef enum action_t action_t;
typedef enum ipcomp_transform_t ipcomp_transform_t;
typedef struct lifetime_cfg_t lifetime_cfg_t;
typedef struct mark_t mark_t;
typedef struct child_cfg_t child_cfg_t;
#include <library.h>
@@ -67,32 +65,6 @@ enum ipcomp_transform_t {
*/
extern enum_name_t *ipcomp_transform_names;
/**
* A lifetime_cfg_t defines the lifetime limits of a CHILD_SA.
*
* Set any of these values to 0 to ignore.
*/
struct lifetime_cfg_t {
struct {
/** Limit before the CHILD_SA gets invalid. */
u_int64_t life;
/** Limit before the CHILD_SA gets rekeyed. */
u_int64_t rekey;
/** The range of a random value subtracted from rekey. */
u_int64_t jitter;
} time, bytes, packets;
};
/**
* A mark_t defines an optional mark in a CHILD_SA.
*/
struct mark_t {
/** Mark value */
u_int32_t value;
/** Mark mask */
u_int32_t mask;
};
/**
* A child_cfg_t defines the config template for a CHILD_SA.
*
@@ -238,7 +210,7 @@ struct child_cfg_t {
* Check whether IPComp should be used, if the other peer supports it.
*
* @return TRUE, if IPComp should be used
* FALSE, otherwise
* FALSE, otherwise
*/
bool (*use_ipcomp)(child_cfg_t *this);
@@ -259,7 +231,7 @@ struct child_cfg_t {
/**
* Optional mark for CHILD_SA
*
* @param inbound TRUE for inbound, FALSE for outbound
* @param inbound TRUE for inbound, FALSE for outbound
* @return mark
*/
mark_t (*get_mark)(child_cfg_t *this, bool inbound);
@@ -277,7 +249,7 @@ struct child_cfg_t {
* Check whether IPsec transport SA should be set up in proxy mode
*
* @return TRUE, if proxy mode should be used
* FALSE, otherwise
* FALSE, otherwise
*/
bool (*use_proxy_mode)(child_cfg_t *this);
@@ -285,7 +257,7 @@ struct child_cfg_t {
* Check whether IPsec policies should be installed in the kernel
*
* @return TRUE, if IPsec kernel policies should be installed
* FALSE, otherwise
* FALSE, otherwise
*/
bool (*install_policy)(child_cfg_t *this);
src/libcharon/daemon.c
+2 -4
View File
@@ -115,10 +115,9 @@ static void destroy(private_daemon_t *this)
#ifdef CAPABILITIES_LIBCAP
cap_free(this->caps);
#endif /* CAPABILITIES_LIBCAP */
DESTROY_IF(this->kernel_handler);
DESTROY_IF(this->public.traps);
DESTROY_IF(this->public.ike_sa_manager);
DESTROY_IF(this->kernel_handler);
DESTROY_IF(this->public.kernel_interface);
DESTROY_IF(this->public.controller);
DESTROY_IF(this->public.eap);
DESTROY_IF(this->public.sim);
@@ -368,10 +367,9 @@ METHOD(daemon_t, initialize, bool,
this->public.eap = eap_manager_create();
this->public.sim = sim_manager_create();
this->public.backends = backend_manager_create();
this->public.kernel_interface = kernel_interface_create();
this->kernel_handler = kernel_handler_create();
this->public.socket = socket_manager_create();
this->public.traps = trap_manager_create();
this->kernel_handler = kernel_handler_create();
/* load plugins, further infrastructure may need it */
if (!lib->plugins->load(lib->plugins, NULL,
src/libcharon/daemon.h
+1 -7
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@@ -37,7 +37,7 @@
* @defgroup payloads payloads
* @ingroup encoding
*
* @defgroup kernel kernel
* @defgroup ckernel kernel
* @ingroup libcharon
*
* @defgroup network network
@@ -140,7 +140,6 @@ typedef struct daemon_t daemon_t;
#include <network/sender.h>
#include <network/receiver.h>
#include <network/socket_manager.h>
#include <kernel/kernel_interface.h>
#include <control/controller.h>
#include <bus/bus.h>
#include <bus/listeners/file_logger.h>
@@ -221,11 +220,6 @@ struct daemon_t {
*/
linked_list_t *sys_loggers;
/**
* Kernel Interface to communicate with kernel
*/
kernel_interface_t *kernel_interface;
/**
* Controller to control the daemon
*/
src/libcharon/kernel/kernel_handler.h
+1 -1
View File
@@ -15,7 +15,7 @@
/**
* @defgroup kernel_handler kernel_handler
* @{ @ingroup kernel
* @{ @ingroup ckernel
*/
#ifndef KERNEL_HANDLER_H_
src/libcharon/kernel/kernel_interface.c
-523
View File
@@ -1,523 +0,0 @@
/*
* Copyright (C) 2008-2010 Tobias Brunner
* Hochschule fuer Technik Rapperswil
* Copyright (C) 2010 Martin Willi
* Copyright (C) 2010 revosec AG
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* for more details.
*/
#include "kernel_interface.h"
#include <daemon.h>
#include <threading/mutex.h>
#include <utils/linked_list.h>
typedef struct private_kernel_interface_t private_kernel_interface_t;
/**
* Private data of a kernel_interface_t object.
*/
struct private_kernel_interface_t {
/**
* Public part of kernel_interface_t object.
*/
kernel_interface_t public;
/**
* ipsec interface
*/
kernel_ipsec_t *ipsec;
/**
* network interface
*/
kernel_net_t *net;
/**
* mutex for listeners
*/
mutex_t *mutex;
/**
* list of registered listeners
*/
linked_list_t *listeners;
};
METHOD(kernel_interface_t, get_spi, status_t,
private_kernel_interface_t *this, host_t *src, host_t *dst,
u_int8_t protocol, u_int32_t reqid, u_int32_t *spi)
{
if (!this->ipsec)
{
return NOT_SUPPORTED;
}
return this->ipsec->get_spi(this->ipsec, src, dst, protocol, reqid, spi);
}
METHOD(kernel_interface_t, get_cpi, status_t,
private_kernel_interface_t *this, host_t *src, host_t *dst,
u_int32_t reqid, u_int16_t *cpi)
{
if (!this->ipsec)
{
return NOT_SUPPORTED;
}
return this->ipsec->get_cpi(this->ipsec, src, dst, reqid, cpi);
}
METHOD(kernel_interface_t, add_sa, status_t,
private_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)
{
if (!this->ipsec)
{
return NOT_SUPPORTED;
}
return this->ipsec->add_sa(this->ipsec, src, dst, spi, protocol, reqid,
mark, lifetime, enc_alg, enc_key, int_alg, int_key, mode, ipcomp,
cpi, encap, inbound, src_ts, dst_ts);
}
METHOD(kernel_interface_t, update_sa, status_t,
private_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)
{
if (!this->ipsec)
{
return NOT_SUPPORTED;
}
return this->ipsec->update_sa(this->ipsec, spi, protocol, cpi, src, dst,
new_src, new_dst, encap, new_encap, mark);
}
METHOD(kernel_interface_t, query_sa, status_t,
private_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)
{
if (!this->ipsec)
{
return NOT_SUPPORTED;
}
return this->ipsec->query_sa(this->ipsec, src, dst, spi, protocol, mark, bytes);
}
METHOD(kernel_interface_t, del_sa, status_t,
private_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)
{
if (!this->ipsec)
{
return NOT_SUPPORTED;
}
return this->ipsec->del_sa(this->ipsec, src, dst, spi, protocol, cpi, mark);
}
METHOD(kernel_interface_t, add_policy, status_t,
private_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)
{
if (!this->ipsec)
{
return NOT_SUPPORTED;
}
return this->ipsec->add_policy(this->ipsec, src, dst, src_ts, dst_ts,
direction, spi, protocol, reqid, mark, mode, ipcomp, cpi, routed);
}
METHOD(kernel_interface_t, query_policy, status_t,
private_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)
{
if (!this->ipsec)
{
return NOT_SUPPORTED;
}
return this->ipsec->query_policy(this->ipsec, src_ts, dst_ts,
direction, mark, use_time);
}
METHOD(kernel_interface_t, del_policy, status_t,
private_kernel_interface_t *this, traffic_selector_t *src_ts,
traffic_selector_t *dst_ts, policy_dir_t direction, mark_t mark,
bool unrouted)
{
if (!this->ipsec)
{
return NOT_SUPPORTED;
}
return this->ipsec->del_policy(this->ipsec, src_ts, dst_ts,
direction, mark, unrouted);
}
METHOD(kernel_interface_t, get_source_addr, host_t*,
private_kernel_interface_t *this, host_t *dest, host_t *src)
{
if (!this->net)
{
return NULL;
}
return this->net->get_source_addr(this->net, dest, src);
}
METHOD(kernel_interface_t, get_nexthop, host_t*,
private_kernel_interface_t *this, host_t *dest)
{
if (!this->net)
{
return NULL;
}
return this->net->get_nexthop(this->net, dest);
}
METHOD(kernel_interface_t, get_interface, char*,
private_kernel_interface_t *this, host_t *host)
{
if (!this->net)
{
return NULL;
}
return this->net->get_interface(this->net, host);
}
METHOD(kernel_interface_t, create_address_enumerator, enumerator_t*,
private_kernel_interface_t *this, bool include_down_ifaces,
bool include_virtual_ips)
{
if (!this->net)
{
return enumerator_create_empty();
}
return this->net->create_address_enumerator(this->net, include_down_ifaces,
include_virtual_ips);
}
METHOD(kernel_interface_t, add_ip, status_t,
private_kernel_interface_t *this, host_t *virtual_ip, host_t *iface_ip)
{
if (!this->net)
{
return NOT_SUPPORTED;
}
return this->net->add_ip(this->net, virtual_ip, iface_ip);
}
METHOD(kernel_interface_t, del_ip, status_t,
private_kernel_interface_t *this, host_t *virtual_ip)
{
if (!this->net)
{
return NOT_SUPPORTED;
}
return this->net->del_ip(this->net, virtual_ip);
}
METHOD(kernel_interface_t, add_route, status_t,
private_kernel_interface_t *this, chunk_t dst_net,
u_int8_t prefixlen, host_t *gateway, host_t *src_ip, char *if_name)
{
if (!this->net)
{
return NOT_SUPPORTED;
}
return this->net->add_route(this->net, dst_net, prefixlen, gateway,
src_ip, if_name);
}
METHOD(kernel_interface_t, del_route, status_t,
private_kernel_interface_t *this, chunk_t dst_net,
u_int8_t prefixlen, host_t *gateway, host_t *src_ip, char *if_name)
{
if (!this->net)
{
return NOT_SUPPORTED;
}
return this->net->del_route(this->net, dst_net, prefixlen, gateway,
src_ip, if_name);
}
METHOD(kernel_interface_t, bypass_socket, bool,
private_kernel_interface_t *this, int fd, int family)
{
if (!this->ipsec)
{
return FALSE;
}
return this->ipsec->bypass_socket(this->ipsec, fd, family);
}
METHOD(kernel_interface_t, get_address_by_ts, status_t,
private_kernel_interface_t *this, traffic_selector_t *ts, host_t **ip)
{
enumerator_t *addrs;
host_t *host;
int family;
bool found = FALSE;
DBG2(DBG_KNL, "getting a local address in traffic selector %R", ts);
/* if we have a family which includes localhost, we do not
* search for an IP, we use the default */
family = ts->get_type(ts) == TS_IPV4_ADDR_RANGE ? AF_INET : AF_INET6;
if (family == AF_INET)
{
host = host_create_from_string("127.0.0.1", 0);
}
else
{
host = host_create_from_string("::1", 0);
}
if (ts->includes(ts, host))
{
*ip = host_create_any(family);
host->destroy(host);
DBG2(DBG_KNL, "using host %H", *ip);
return SUCCESS;
}
host->destroy(host);
addrs = create_address_enumerator(this, TRUE, TRUE);
while (addrs->enumerate(addrs, (void**)&host))
{
if (ts->includes(ts, host))
{
found = TRUE;
*ip = host->clone(host);
break;
}
}
addrs->destroy(addrs);
if (!found)
{
DBG1(DBG_KNL, "no local address found in traffic selector %R", ts);
return FAILED;
}
DBG2(DBG_KNL, "using host %H", *ip);
return SUCCESS;
}
METHOD(kernel_interface_t, add_ipsec_interface, void,
private_kernel_interface_t *this, kernel_ipsec_constructor_t constructor)
{
if (!this->ipsec)
{
this->ipsec = constructor();
}
}
METHOD(kernel_interface_t, remove_ipsec_interface, void,
private_kernel_interface_t *this, kernel_ipsec_constructor_t constructor)
{
/* TODO: replace if interface currently in use */
}
METHOD(kernel_interface_t, add_net_interface, void,
private_kernel_interface_t *this, kernel_net_constructor_t constructor)
{
if (!this->net)
{
this->net = constructor();
}
}
METHOD(kernel_interface_t, remove_net_interface, void,
private_kernel_interface_t *this, kernel_net_constructor_t constructor)
{
/* TODO: replace if interface currently in use */
}
METHOD(kernel_interface_t, add_listener, void,
private_kernel_interface_t *this, kernel_listener_t *listener)
{
this->mutex->lock(this->mutex);
this->listeners->insert_last(this->listeners, listener);
this->mutex->unlock(this->mutex);
}
METHOD(kernel_interface_t, remove_listener, void,
private_kernel_interface_t *this, kernel_listener_t *listener)
{
this->mutex->lock(this->mutex);
this->listeners->remove(this->listeners, listener, NULL);
this->mutex->unlock(this->mutex);
}
METHOD(kernel_interface_t, acquire, void,
private_kernel_interface_t *this, u_int32_t reqid,
traffic_selector_t *src_ts, traffic_selector_t *dst_ts)
{
kernel_listener_t *listener;
enumerator_t *enumerator;
this->mutex->lock(this->mutex);
enumerator = this->listeners->create_enumerator(this->listeners);
while (enumerator->enumerate(enumerator, &listener))
{
if (listener->acquire &&
!listener->acquire(listener, reqid, src_ts, dst_ts))
{
this->listeners->remove_at(this->listeners, enumerator);
}
}
enumerator->destroy(enumerator);
this->mutex->unlock(this->mutex);
}
METHOD(kernel_interface_t, expire, void,
private_kernel_interface_t *this, u_int32_t reqid, u_int8_t protocol,
u_int32_t spi, bool hard)
{
kernel_listener_t *listener;
enumerator_t *enumerator;
this->mutex->lock(this->mutex);
enumerator = this->listeners->create_enumerator(this->listeners);
while (enumerator->enumerate(enumerator, &listener))
{
if (listener->expire &&
!listener->expire(listener, reqid, protocol, spi, hard))
{
this->listeners->remove_at(this->listeners, enumerator);
}
}
enumerator->destroy(enumerator);
this->mutex->unlock(this->mutex);
}
METHOD(kernel_interface_t, mapping, void,
private_kernel_interface_t *this, u_int32_t reqid, u_int32_t spi,
host_t *remote)
{
kernel_listener_t *listener;
enumerator_t *enumerator;
this->mutex->lock(this->mutex);
enumerator = this->listeners->create_enumerator(this->listeners);
while (enumerator->enumerate(enumerator, &listener))
{
if (listener->mapping &&
!listener->mapping(listener, reqid, spi, remote))
{
this->listeners->remove_at(this->listeners, enumerator);
}
}
enumerator->destroy(enumerator);
this->mutex->unlock(this->mutex);
}
METHOD(kernel_interface_t, migrate, void,
private_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)
{
kernel_listener_t *listener;
enumerator_t *enumerator;
this->mutex->lock(this->mutex);
enumerator = this->listeners->create_enumerator(this->listeners);
while (enumerator->enumerate(enumerator, &listener))
{
if (listener->migrate &&
!listener->migrate(listener, reqid, src_ts, dst_ts, direction,
local, remote))
{
this->listeners->remove_at(this->listeners, enumerator);
}
}
enumerator->destroy(enumerator);
this->mutex->unlock(this->mutex);
}
static bool call_roam(kernel_listener_t *listener, bool *roam)
{
return listener->roam && !listener->roam(listener, *roam);
}
METHOD(kernel_interface_t, roam, void,
private_kernel_interface_t *this, bool address)
{
this->mutex->lock(this->mutex);
this->listeners->remove(this->listeners, &address, (void*)call_roam);
this->mutex->unlock(this->mutex);
}
METHOD(kernel_interface_t, destroy, void,
private_kernel_interface_t *this)
{
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;
}
src/libcharon/kernel/kernel_interface.h
-483
View File
@@ -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_ @}*/
src/libcharon/kernel/kernel_ipsec.c
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@@ -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"
);
src/libcharon/kernel/kernel_ipsec.h
-292
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@@ -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_ @}*/
src/libcharon/kernel/kernel_listener.h
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/*
* 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_ @}*/
src/libcharon/kernel/kernel_net.h
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@@ -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_ @}*/