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
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
|
/*
* Copyright (C) 2011 Martin Willi
* Copyright (C) 2011 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 <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 "quick_delete.h"
#include <daemon.h>
#include <encoding/payloads/delete_payload.h>
typedef struct private_quick_delete_t private_quick_delete_t;
/**
* Private members of a quick_delete_t task.
*/
struct private_quick_delete_t {
/**
* Public methods and task_t interface.
*/
quick_delete_t public;
/**
* Assigned IKE_SA.
*/
ike_sa_t *ike_sa;
/**
* Are we the initiator?
*/
bool initiator;
/**
* Protocol of CHILD_SA to delete
*/
protocol_id_t protocol;
/**
* Inbound SPI of CHILD_SA to delete
*/
u_int32_t spi;
/**
* Send delete even if SA does not exist
*/
bool force;
/**
* SA already expired?
*/
bool expired;
};
/**
* Delete the specified CHILD_SA, if found
*/
static bool delete_child(private_quick_delete_t *this,
protocol_id_t protocol, u_int32_t spi)
{
u_int64_t bytes_in, bytes_out;
child_sa_t *child_sa;
child_sa = this->ike_sa->get_child_sa(this->ike_sa, protocol, spi, TRUE);
if (!child_sa)
{ /* fallback and check for outbound SA */
child_sa = this->ike_sa->get_child_sa(this->ike_sa, protocol, spi, FALSE);
if (!child_sa)
{
return FALSE;
}
this->spi = spi = child_sa->get_spi(child_sa, TRUE);
}
child_sa->set_state(child_sa, CHILD_DELETING);
if (this->expired)
{
DBG0(DBG_IKE, "closing expired CHILD_SA %s{%d} "
"with SPIs %.8x_i %.8x_o and TS %#R=== %#R",
child_sa->get_name(child_sa), child_sa->get_reqid(child_sa),
ntohl(child_sa->get_spi(child_sa, TRUE)),
ntohl(child_sa->get_spi(child_sa, FALSE)),
child_sa->get_traffic_selectors(child_sa, TRUE),
child_sa->get_traffic_selectors(child_sa, FALSE));
}
else
{
child_sa->get_usestats(child_sa, TRUE, NULL, &bytes_in);
child_sa->get_usestats(child_sa, FALSE, NULL, &bytes_out);
DBG0(DBG_IKE, "closing CHILD_SA %s{%d} with SPIs "
"%.8x_i (%llu bytes) %.8x_o (%llu bytes) and TS %#R=== %#R",
child_sa->get_name(child_sa), child_sa->get_reqid(child_sa),
ntohl(child_sa->get_spi(child_sa, TRUE)), bytes_in,
ntohl(child_sa->get_spi(child_sa, FALSE)), bytes_out,
child_sa->get_traffic_selectors(child_sa, TRUE),
child_sa->get_traffic_selectors(child_sa, FALSE));
}
charon->bus->child_updown(charon->bus, child_sa, FALSE);
this->ike_sa->destroy_child_sa(this->ike_sa, protocol, spi);
/* TODO-IKEv1: handle close action? */
return TRUE;
}
METHOD(task_t, build_i, status_t,
private_quick_delete_t *this, message_t *message)
{
if (delete_child(this, this->protocol, this->spi) || this->force)
{
delete_payload_t *delete_payload;
DBG1(DBG_IKE, "sending DELETE for %N CHILD_SA with SPI %.8x",
protocol_id_names, this->protocol, ntohl(this->spi));
delete_payload = delete_payload_create(DELETE_V1, PROTO_ESP);
delete_payload->add_spi(delete_payload, this->spi);
message->add_payload(message, &delete_payload->payload_interface);
return SUCCESS;
}
return ALREADY_DONE;
}
METHOD(task_t, process_i, status_t,
private_quick_delete_t *this, message_t *message)
{
return FAILED;
}
METHOD(task_t, process_r, status_t,
private_quick_delete_t *this, message_t *message)
{
enumerator_t *payloads, *spis;
payload_t *payload;
delete_payload_t *delete_payload;
protocol_id_t protocol;
u_int32_t spi;
payloads = message->create_payload_enumerator(message);
while (payloads->enumerate(payloads, &payload))
{
if (payload->get_type(payload) == DELETE_V1)
{
delete_payload = (delete_payload_t*)payload;
protocol = delete_payload->get_protocol_id(delete_payload);
if (protocol != PROTO_ESP && protocol != PROTO_AH)
{
continue;
}
spis = delete_payload->create_spi_enumerator(delete_payload);
while (spis->enumerate(spis, &spi))
{
DBG1(DBG_IKE, "received DELETE for %N CHILD_SA with SPI %.8x",
protocol_id_names, protocol, ntohl(spi));
if (!delete_child(this, protocol, spi))
{
DBG1(DBG_IKE, "CHILD_SA not found, ignored");
continue;
}
}
spis->destroy(spis);
}
}
payloads->destroy(payloads);
return SUCCESS;
}
METHOD(task_t, build_r, status_t,
private_quick_delete_t *this, message_t *message)
{
return FAILED;
}
METHOD(task_t, get_type, task_type_t,
private_quick_delete_t *this)
{
return TASK_QUICK_DELETE;
}
METHOD(task_t, migrate, void,
private_quick_delete_t *this, ike_sa_t *ike_sa)
{
this->ike_sa = ike_sa;
}
METHOD(task_t, destroy, void,
private_quick_delete_t *this)
{
free(this);
}
/*
* Described in header.
*/
quick_delete_t *quick_delete_create(ike_sa_t *ike_sa, protocol_id_t protocol,
u_int32_t spi, bool force, bool expired)
{
private_quick_delete_t *this;
INIT(this,
.public = {
.task = {
.get_type = _get_type,
.migrate = _migrate,
.destroy = _destroy,
},
},
.ike_sa = ike_sa,
.protocol = protocol,
.spi = spi,
.force = force,
.expired = expired,
);
if (protocol != PROTO_NONE)
{
this->public.task.build = _build_i;
this->public.task.process = _process_i;
}
else
{
this->public.task.build = _build_r;
this->public.task.process = _process_r;
}
return &this->public;
}
|
