Merge branch 'trap-manager-uninstall'
[strongswan.git] / src / libcharon / sa / task_manager.c
1 /*
2 * Copyright (C) 2011 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 "task_manager.h"
17
18 #include <math.h>
19 #include <sa/ikev1/task_manager_v1.h>
20 #include <sa/ikev2/task_manager_v2.h>
21
22 /*
23 * See header
24 */
25 u_int task_manager_total_retransmit_timeout()
26 {
27 double timeout, base, limit = 0, total = 0;
28 int tries, i;
29
30 tries = lib->settings->get_int(lib->settings, "%s.retransmit_tries",
31 RETRANSMIT_TRIES, lib->ns);
32 base = lib->settings->get_double(lib->settings, "%s.retransmit_base",
33 RETRANSMIT_BASE, lib->ns);
34 timeout = lib->settings->get_double(lib->settings, "%s.retransmit_timeout",
35 RETRANSMIT_TIMEOUT, lib->ns);
36 limit = lib->settings->get_double(lib->settings, "%s.retransmit_limit",
37 0, lib->ns);
38
39 for (i = 0; i <= tries; i++)
40 {
41 double interval = timeout * pow(base, i);
42 if (limit)
43 {
44 interval = min(interval, limit);
45 }
46 total += interval;
47 }
48 return (u_int)total;
49 }
50
51 /*
52 * See header
53 */
54 task_manager_t *task_manager_create(ike_sa_t *ike_sa)
55 {
56 switch (ike_sa->get_version(ike_sa))
57 {
58 case IKEV1:
59 #ifdef USE_IKEV1
60 return &task_manager_v1_create(ike_sa)->task_manager;
61 #endif
62 break;
63 case IKEV2:
64 #ifdef USE_IKEV2
65 return &task_manager_v2_create(ike_sa)->task_manager;
66 #endif
67 break;
68 default:
69 break;
70 }
71 return NULL;
72 }
73