1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
|
/*
* Copyright (C) 2006 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.
*/
#include "rekey_ike_sa_job.h"
#include <daemon.h>
typedef struct private_rekey_ike_sa_job_t private_rekey_ike_sa_job_t;
/**
* Private data of an rekey_ike_sa_job_t object.
*/
struct private_rekey_ike_sa_job_t {
/**
* Public rekey_ike_sa_job_t interface.
*/
rekey_ike_sa_job_t public;
/**
* ID of the IKE_SA to rekey
*/
ike_sa_id_t *ike_sa_id;
/**
* force reauthentication of the peer (full IKE_SA setup)
*/
bool reauth;
};
METHOD(job_t, destroy, void,
private_rekey_ike_sa_job_t *this)
{
this->ike_sa_id->destroy(this->ike_sa_id);
free(this);
}
/**
* Check if we should delay a reauth, and by how many seconds
*/
static uint32_t get_retry_delay(ike_sa_t *ike_sa)
{
enumerator_t *enumerator;
child_sa_t *child_sa;
uint32_t retry = 0;
/* avoid reauth collisions for certain IKE_SA/CHILD_SA states */
if (ike_sa->get_state(ike_sa) != IKE_ESTABLISHED)
{
retry = RETRY_INTERVAL - (random() % RETRY_JITTER);
DBG1(DBG_IKE, "unable to reauthenticate in %N state, delaying for %us",
ike_sa_state_names, ike_sa->get_state(ike_sa), retry);
}
else
{
enumerator = ike_sa->create_child_sa_enumerator(ike_sa);
while (enumerator->enumerate(enumerator, &child_sa))
{
if (child_sa->get_state(child_sa) != CHILD_INSTALLED &&
child_sa->get_state(child_sa) != CHILD_REKEYED)
{
retry = RETRY_INTERVAL - (random() % RETRY_JITTER);
DBG1(DBG_IKE, "unable to reauthenticate in CHILD_SA %N state, "
"delaying for %us", child_sa_state_names,
child_sa->get_state(child_sa), retry);
break;
}
}
enumerator->destroy(enumerator);
}
return retry;
}
METHOD(job_t, execute, job_requeue_t,
private_rekey_ike_sa_job_t *this)
{
ike_sa_t *ike_sa;
status_t status = SUCCESS;
uint32_t retry = 0;
ike_sa = charon->ike_sa_manager->checkout(charon->ike_sa_manager,
this->ike_sa_id);
if (ike_sa == NULL)
{
DBG2(DBG_JOB, "IKE_SA to rekey not found");
}
else
{
if (this->reauth)
{
retry = get_retry_delay(ike_sa);
if (!retry)
{
status = ike_sa->reauth(ike_sa);
}
}
else
{
status = ike_sa->rekey(ike_sa);
}
if (status == DESTROY_ME)
{
charon->ike_sa_manager->checkin_and_destroy(charon->ike_sa_manager,
ike_sa);
}
else
{
charon->ike_sa_manager->checkin(charon->ike_sa_manager, ike_sa);
}
}
if (retry)
{
return JOB_RESCHEDULE(retry);
}
return JOB_REQUEUE_NONE;
}
METHOD(job_t, get_priority, job_priority_t,
private_rekey_ike_sa_job_t *this)
{
return JOB_PRIO_MEDIUM;
}
/*
* Described in header
*/
rekey_ike_sa_job_t *rekey_ike_sa_job_create(ike_sa_id_t *ike_sa_id, bool reauth)
{
private_rekey_ike_sa_job_t *this;
INIT(this,
.public = {
.job_interface = {
.execute = _execute,
.get_priority = _get_priority,
.destroy = _destroy,
},
},
.ike_sa_id = ike_sa_id->clone(ike_sa_id),
.reauth = reauth,
);
return &(this->public);
}
|
