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 \
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 \
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>
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.
*
* After creation, proposals and traffic selectors may be added to the config.
* 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);
/**
* 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);
* 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);
* 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);
#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);
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,
* @defgroup payloads payloads
* @ingroup encoding
*
- * @defgroup kernel kernel
+ * @defgroup ckernel kernel
* @ingroup libcharon
*
* @defgroup network network
#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>
linked_list_t *sys_loggers;
/**
- * Kernel Interface to communicate with kernel
- */
- kernel_interface_t *kernel_interface;
-
- /**
* Controller to control the daemon
*/
controller_t *controller;
/**
* @defgroup kernel_handler kernel_handler
- * @{ @ingroup kernel
+ * @{ @ingroup ckernel
*/
#ifndef KERNEL_HANDLER_H_
+++ /dev/null
-/*
- * 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;
-}
-
+++ /dev/null
-/*
- * 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_ @}*/
+++ /dev/null
-/*
- * 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"
-);
-
+++ /dev/null
-/*
- * 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_ @}*/
+++ /dev/null
-/*
- * 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_ @}*/
+++ /dev/null
-/*
- * 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_ @}*/
attributes/attribute_provider.h attributes/attribute_handler.h \
attributes/attribute_manager.c attributes/attribute_manager.h \
attributes/mem_pool.c attributes/mem_pool.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 \
processing/jobs/job.h \
processing/jobs/callback_job.c processing/jobs/callback_job.h \
processing/processor.c processing/processor.h \
attributes/attribute_provider.h attributes/attribute_handler.h \
attributes/attribute_manager.c attributes/attribute_manager.h \
attributes/mem_pool.c attributes/mem_pool.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 \
processing/jobs/job.h \
processing/jobs/callback_job.c processing/jobs/callback_job.h \
processing/processor.c processing/processor.h \
{
private_hydra_t *this = (private_hydra_t*)hydra;
this->public.attributes->destroy(this->public.attributes);
+ this->public.kernel_interface->destroy(this->public.kernel_interface);
this->public.scheduler->destroy(this->public.scheduler);
this->public.processor->destroy(this->public.processor);
free((void*)this->public.daemon);
INIT(this,
.public = {
.attributes = attribute_manager_create(),
+ .kernel_interface = kernel_interface_create(),
.processor = processor_create(),
.daemon = strdup(daemon ?: "libhydra"),
},
* @defgroup attributes attributes
* @ingroup libhydra
*
+ * @defgroup hkernel kernel
+ * @ingroup libhydra
+ *
* @defgroup hplugins plugins
* @ingroup libhydra
*
typedef struct hydra_t hydra_t;
#include <attributes/attribute_manager.h>
+#include <kernel/kernel_interface.h>
#include <processing/processor.h>
#include <processing/scheduler.h>
attribute_manager_t *attributes;
/**
+ * kernel interface to communicate with kernel
+ */
+ kernel_interface_t *kernel_interface;
+
+ /**
* process jobs using a thread pool
*/
processor_t *processor;
--- /dev/null
+/*
+ * 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 <debug.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;
+}
+
--- /dev/null
+/*
+ * 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 hkernel
+ */
+
+#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 <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_ @}*/
--- /dev/null
+/*
+ * 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"
+);
+
--- /dev/null
+/*
+ * 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 hkernel
+ */
+
+#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;
+typedef struct lifetime_cfg_t lifetime_cfg_t;
+typedef struct mark_t mark_t;
+
+#include <utils/host.h>
+#include <crypto/prf_plus.h>
+#include <selectors/traffic_selector.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;
+
+/**
+ * A lifetime_cfg_t defines the lifetime limits of an SA.
+ *
+ * Set any of these values to 0 to ignore.
+ */
+struct lifetime_cfg_t {
+ struct {
+ /** Limit before the SA gets invalid. */
+ u_int64_t life;
+ /** Limit before the 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 an IPsec SA.
+ */
+struct mark_t {
+ /** Mark value */
+ u_int32_t value;
+ /** Mark mask */
+ u_int32_t mask;
+};
+
+/**
+ * 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_ @}*/
--- /dev/null
+/*
+ * 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 hkernel
+ */
+
+#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_ @}*/
--- /dev/null
+/*
+ * 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 hkernel
+ */
+
+#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_ @}*/
projects / strongswan.git / commitdiff