From 1ac70afcc1f7d6d2738a34308810719b0976d29f Mon Sep 17 00:00:00 2001 From: Rene Mayrhofer Date: Tue, 25 May 2010 19:01:36 +0000 Subject: [svn-upgrade] Integrating new upstream version, strongswan (4.4.0) --- src/libcharon/kernel/kernel_interface.c | 386 ++++++++++++++++++++++++++++++++ 1 file changed, 386 insertions(+) create mode 100644 src/libcharon/kernel/kernel_interface.c (limited to 'src/libcharon/kernel/kernel_interface.c') diff --git a/src/libcharon/kernel/kernel_interface.c b/src/libcharon/kernel/kernel_interface.c new file mode 100644 index 000000000..64a43a7fc --- /dev/null +++ b/src/libcharon/kernel/kernel_interface.c @@ -0,0 +1,386 @@ +/* + * Copyright (C) 2008-2009 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 . + * + * 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 + +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; +}; + +METHOD(kernel_interface_t, get_spi, status_t, + private_kernel_interface_t *this, host_t *src, host_t *dst, + protocol_id_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, protocol_id_t protocol, u_int32_t reqid, + 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, + 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, protocol_id_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) +{ + 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); +} + +METHOD(kernel_interface_t, query_sa, status_t, + private_kernel_interface_t *this, host_t *src, host_t *dst, + u_int32_t spi, protocol_id_t protocol, u_int64_t *bytes) +{ + if (!this->ipsec) + { + return NOT_SUPPORTED; + } + return this->ipsec->query_sa(this->ipsec, src, dst, spi, protocol, bytes); +} + +METHOD(kernel_interface_t, del_sa, status_t, + private_kernel_interface_t *this, host_t *src, host_t *dst, u_int32_t spi, + protocol_id_t protocol, u_int16_t cpi) +{ + if (!this->ipsec) + { + return NOT_SUPPORTED; + } + return this->ipsec->del_sa(this->ipsec, src, dst, spi, protocol, cpi); +} + +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, protocol_id_t protocol, + u_int32_t reqid, 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, 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, u_int32_t *use_time) +{ + if (!this->ipsec) + { + return NOT_SUPPORTED; + } + return this->ipsec->query_policy(this->ipsec, src_ts, dst_ts, + direction, 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, bool unrouted) +{ + if (!this->ipsec) + { + return NOT_SUPPORTED; + } + return this->ipsec->del_policy(this->ipsec, src_ts, dst_ts, + direction, 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, destroy, void, + private_kernel_interface_t *this) +{ + DESTROY_IF(this->ipsec); + DESTROY_IF(this->net); + 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, + .destroy = _destroy, + }, + ); + + return &this->public; +} + -- cgit v1.2.3