b4fe1efed48dea265dac4dc5c832b66c23a2d530
[strongswan.git] / src / libcharon / kernel / kernel_handler.c
1 /*
2 * Copyright (C) 2010 Tobias Brunner
3 * Hochschule fuer Technik Rapperswil
4 *
5 * This program is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License as published by the
7 * Free Software Foundation; either version 2 of the License, or (at your
8 * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>.
9 *
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
12 * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
13 * for more details.
14 */
15
16 #include "kernel_handler.h"
17
18 #include <hydra.h>
19 #include <daemon.h>
20 #include <processing/jobs/acquire_job.h>
21 #include <processing/jobs/rekey_child_sa_job.h>
22 #include <processing/jobs/delete_child_sa_job.h>
23 #include <processing/jobs/update_sa_job.h>
24
25 typedef struct private_kernel_handler_t private_kernel_handler_t;
26
27 /**
28 * Private data of a kernel_handler_t object.
29 */
30 struct private_kernel_handler_t {
31
32 /**
33 * Public part of kernel_handler_t object.
34 */
35 kernel_handler_t public;
36
37 };
38
39 METHOD(kernel_listener_t, acquire, bool,
40 private_kernel_handler_t *this, u_int32_t reqid,
41 traffic_selector_t *src_ts, traffic_selector_t *dst_ts)
42 {
43 job_t *job;
44 if (src_ts && dst_ts)
45 {
46 DBG1(DBG_KNL, "creating acquire job for policy %R === %R "
47 "with reqid {%u}", src_ts, dst_ts, reqid);
48 }
49 else
50 {
51 DBG1(DBG_KNL, "creating acquire job for policy with reqid {%u}", reqid);
52 }
53 job = (job_t*)acquire_job_create(reqid, src_ts, dst_ts);
54 hydra->processor->queue_job(hydra->processor, job);
55 return TRUE;
56 }
57
58 METHOD(kernel_listener_t, expire, bool,
59 private_kernel_handler_t *this, u_int32_t reqid, protocol_id_t protocol,
60 u_int32_t spi, bool hard)
61 {
62 job_t *job;
63 DBG1(DBG_KNL, "creating %s job for %N CHILD_SA with SPI %.8x "
64 "and reqid {%u}", hard ? "delete" : "rekey",
65 protocol_id_names, protocol, ntohl(spi), reqid);
66 if (hard)
67 {
68 job = (job_t*)delete_child_sa_job_create(reqid, protocol, spi);
69 }
70 else
71 {
72 job = (job_t*)rekey_child_sa_job_create(reqid, protocol, spi);
73 }
74 hydra->processor->queue_job(hydra->processor, job);
75 return TRUE;
76 }
77
78 METHOD(kernel_listener_t, mapping, bool,
79 private_kernel_handler_t *this, u_int32_t reqid, u_int32_t spi,
80 host_t *remote)
81 {
82 job_t *job;
83 DBG1(DBG_KNL, "NAT mappings of ESP CHILD_SA with SPI %.8x and "
84 "reqid {%u} changed, queuing update job", ntohl(spi), reqid);
85 job = (job_t*)update_sa_job_create(reqid, remote);
86 hydra->processor->queue_job(hydra->processor, job);
87 return TRUE;
88 }
89
90 METHOD(kernel_handler_t, destroy, void,
91 private_kernel_handler_t *this)
92 {
93 charon->kernel_interface->remove_listener(charon->kernel_interface,
94 &this->public.listener);
95 free(this);
96 }
97
98 kernel_handler_t *kernel_handler_create()
99 {
100 private_kernel_handler_t *this;
101
102 INIT(this,
103 .public = {
104 .listener = {
105 .acquire = _acquire,
106 .expire = _expire,
107 .mapping = _mapping,
108 },
109 .destroy = _destroy,
110 },
111 );
112
113 charon->kernel_interface->add_listener(charon->kernel_interface,
114 &this->public.listener);
115
116 return &this->public;
117 }
118