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
|
/*
* Copyright (C) 2012 Tobias Brunner
* Copyright (C) 2012 Giuliano Grassi
* Copyright (C) 2012 Ralf Sager
* 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 "ipsec_policy.h"
#include <utils/debug.h>
typedef struct private_ipsec_policy_t private_ipsec_policy_t;
/**
* Private additions to ipsec_policy_t.
*/
struct private_ipsec_policy_t {
/**
* Public members
*/
ipsec_policy_t public;
/**
* SA source address
*/
host_t *src;
/**
* SA destination address
*/
host_t *dst;
/**
* Source traffic selector
*/
traffic_selector_t *src_ts;
/**
* Destination traffic selector
*/
traffic_selector_t *dst_ts;
/**
* If any of the two TS has a protocol selector we cache it here
*/
u_int8_t protocol;
/**
* Traffic direction
*/
policy_dir_t direction;
/**
* Policy type
*/
policy_type_t type;
/**
* SA configuration
*/
ipsec_sa_cfg_t sa;
/**
* Mark
*/
mark_t mark;
/**
* Policy priority
*/
policy_priority_t priority;
/**
* Reference counter
*/
refcount_t refcount;
};
METHOD(ipsec_policy_t, match, bool,
private_ipsec_policy_t *this, traffic_selector_t *src_ts,
traffic_selector_t *dst_ts, policy_dir_t direction, u_int32_t reqid,
mark_t mark, policy_priority_t priority)
{
return (this->direction == direction &&
this->priority == priority &&
this->sa.reqid == reqid &&
memeq(&this->mark, &mark, sizeof(mark_t)) &&
this->src_ts->equals(this->src_ts, src_ts) &&
this->dst_ts->equals(this->dst_ts, dst_ts));
}
METHOD(ipsec_policy_t, match_packet, bool,
private_ipsec_policy_t *this, ip_packet_t *packet)
{
u_int8_t proto = packet->get_next_header(packet);
host_t *src = packet->get_source(packet),
*dst = packet->get_destination(packet);
return (!this->protocol || this->protocol == proto) &&
this->src_ts->includes(this->src_ts, src) &&
this->dst_ts->includes(this->dst_ts, dst);
}
METHOD(ipsec_policy_t, get_source_ts, traffic_selector_t*,
private_ipsec_policy_t *this)
{
return this->src_ts;
}
METHOD(ipsec_policy_t, get_destination_ts, traffic_selector_t*,
private_ipsec_policy_t *this)
{
return this->dst_ts;
}
METHOD(ipsec_policy_t, get_reqid, u_int32_t,
private_ipsec_policy_t *this)
{
return this->sa.reqid;
}
METHOD(ipsec_policy_t, get_direction, policy_dir_t,
private_ipsec_policy_t *this)
{
return this->direction;
}
METHOD(ipsec_policy_t, get_priority, policy_priority_t,
private_ipsec_policy_t *this)
{
return this->priority;
}
METHOD(ipsec_policy_t, get_type, policy_type_t,
private_ipsec_policy_t *this)
{
return this->type;
}
METHOD(ipsec_policy_t, get_ref, ipsec_policy_t*,
private_ipsec_policy_t *this)
{
ref_get(&this->refcount);
return &this->public;
}
METHOD(ipsec_policy_t, destroy, void,
private_ipsec_policy_t *this)
{
if (ref_put(&this->refcount))
{
this->src->destroy(this->src);
this->dst->destroy(this->dst);
this->src_ts->destroy(this->src_ts);
this->dst_ts->destroy(this->dst_ts);
free(this);
}
}
/**
* Described in header.
*/
ipsec_policy_t *ipsec_policy_create(host_t *src, host_t *dst,
traffic_selector_t *src_ts,
traffic_selector_t *dst_ts,
policy_dir_t direction, policy_type_t type,
ipsec_sa_cfg_t *sa, mark_t mark,
policy_priority_t priority)
{
private_ipsec_policy_t *this;
INIT(this,
.public = {
.match = _match,
.match_packet = _match_packet,
.get_source_ts = _get_source_ts,
.get_destination_ts = _get_destination_ts,
.get_direction = _get_direction,
.get_priority = _get_priority,
.get_reqid = _get_reqid,
.get_type = _get_type,
.get_ref = _get_ref,
.destroy = _destroy,
},
.src = src->clone(src),
.dst = dst->clone(dst),
.src_ts = src_ts->clone(src_ts),
.dst_ts = dst_ts->clone(dst_ts),
.protocol = max(src_ts->get_protocol(src_ts),
dst_ts->get_protocol(dst_ts)),
.direction = direction,
.type = type,
.sa = *sa,
.mark = mark,
.priority = priority,
.refcount = 1,
);
return &this->public;
}
|
