diff options
Diffstat (limited to 'src/libcharon/kernel/kernel_handler.c')
| -rw-r--r-- | src/libcharon/kernel/kernel_handler.c | 163 |
1 files changed, 163 insertions, 0 deletions
diff --git a/src/libcharon/kernel/kernel_handler.c b/src/libcharon/kernel/kernel_handler.c new file mode 100644 index 000000000..d9e39fe43 --- /dev/null +++ b/src/libcharon/kernel/kernel_handler.c @@ -0,0 +1,163 @@ +/* + * 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. + */ + +#include "kernel_handler.h" + +#include <hydra.h> +#include <daemon.h> +#include <processing/jobs/acquire_job.h> +#include <processing/jobs/delete_child_sa_job.h> +#include <processing/jobs/migrate_job.h> +#include <processing/jobs/rekey_child_sa_job.h> +#include <processing/jobs/roam_job.h> +#include <processing/jobs/update_sa_job.h> + +typedef struct private_kernel_handler_t private_kernel_handler_t; + +/** + * Private data of a kernel_handler_t object. + */ +struct private_kernel_handler_t { + + /** + * Public part of kernel_handler_t object. + */ + kernel_handler_t public; + +}; + +/** + * convert an IP protocol identifier to the IKEv2 specific protocol identifier. + */ +static inline protocol_id_t proto_ip2ike(u_int8_t protocol) +{ + switch (protocol) + { + case IPPROTO_ESP: + return PROTO_ESP; + case IPPROTO_AH: + return PROTO_AH; + default: + return protocol; + } +} + +METHOD(kernel_listener_t, acquire, bool, + private_kernel_handler_t *this, u_int32_t reqid, + traffic_selector_t *src_ts, traffic_selector_t *dst_ts) +{ + job_t *job; + if (src_ts && dst_ts) + { + DBG1(DBG_KNL, "creating acquire job for policy %R === %R " + "with reqid {%u}", src_ts, dst_ts, reqid); + } + else + { + DBG1(DBG_KNL, "creating acquire job for policy with reqid {%u}", reqid); + } + job = (job_t*)acquire_job_create(reqid, src_ts, dst_ts); + lib->processor->queue_job(lib->processor, job); + return TRUE; +} + +METHOD(kernel_listener_t, expire, bool, + private_kernel_handler_t *this, u_int32_t reqid, u_int8_t protocol, + u_int32_t spi, bool hard) +{ + job_t *job; + protocol_id_t proto = proto_ip2ike(protocol); + DBG1(DBG_KNL, "creating %s job for %N CHILD_SA with SPI %.8x " + "and reqid {%u}", hard ? "delete" : "rekey", + protocol_id_names, proto, ntohl(spi), reqid); + if (hard) + { + job = (job_t*)delete_child_sa_job_create(reqid, proto, spi); + } + else + { + job = (job_t*)rekey_child_sa_job_create(reqid, proto, spi); + } + lib->processor->queue_job(lib->processor, job); + return TRUE; +} + +METHOD(kernel_listener_t, mapping, bool, + private_kernel_handler_t *this, u_int32_t reqid, u_int32_t spi, + host_t *remote) +{ + job_t *job; + DBG1(DBG_KNL, "NAT mappings of ESP CHILD_SA with SPI %.8x and " + "reqid {%u} changed, queuing update job", ntohl(spi), reqid); + job = (job_t*)update_sa_job_create(reqid, remote); + lib->processor->queue_job(lib->processor, job); + return TRUE; +} + +METHOD(kernel_listener_t, migrate, bool, + private_kernel_handler_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) +{ + job_t *job; + DBG1(DBG_KNL, "creating migrate job for policy %R === %R %N with " + "reqid {%u}", src_ts, dst_ts, policy_dir_names, direction, + reqid, local); + job = (job_t*)migrate_job_create(reqid, src_ts, dst_ts, direction, local, + remote); + lib->processor->queue_job(lib->processor, job); + return TRUE; +} + +METHOD(kernel_listener_t, roam, bool, + private_kernel_handler_t *this, bool address) +{ + job_t *job; + job = (job_t*)roam_job_create(address); + lib->processor->queue_job(lib->processor, job); + return TRUE; +} + +METHOD(kernel_handler_t, destroy, void, + private_kernel_handler_t *this) +{ + hydra->kernel_interface->remove_listener(hydra->kernel_interface, + &this->public.listener); + free(this); +} + +kernel_handler_t *kernel_handler_create() +{ + private_kernel_handler_t *this; + + INIT(this, + .public = { + .listener = { + .acquire = _acquire, + .expire = _expire, + .mapping = _mapping, + .migrate = _migrate, + .roam = _roam, + }, + .destroy = _destroy, + }, + ); + + hydra->kernel_interface->add_listener(hydra->kernel_interface, + &this->public.listener); + + return &this->public; +} + |