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
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
|
/*
* Copyright (C) 2007 Tobias Brunner
* Copyright (C) 2005-2006 Martin Willi
* Copyright (C) 2005 Jan Hutter
* 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 "payload.h"
#include <encoding/payloads/ike_header.h>
#include <encoding/payloads/sa_payload.h>
#include <encoding/payloads/nonce_payload.h>
#include <encoding/payloads/id_payload.h>
#include <encoding/payloads/ke_payload.h>
#include <encoding/payloads/notify_payload.h>
#include <encoding/payloads/auth_payload.h>
#include <encoding/payloads/cert_payload.h>
#include <encoding/payloads/certreq_payload.h>
#include <encoding/payloads/encryption_payload.h>
#include <encoding/payloads/ts_payload.h>
#include <encoding/payloads/delete_payload.h>
#include <encoding/payloads/vendor_id_payload.h>
#include <encoding/payloads/cp_payload.h>
#include <encoding/payloads/configuration_attribute.h>
#include <encoding/payloads/eap_payload.h>
#include <encoding/payloads/hash_payload.h>
#include <encoding/payloads/unknown_payload.h>
ENUM_BEGIN(payload_type_names, NO_PAYLOAD, NO_PAYLOAD,
"NO_PAYLOAD");
ENUM_NEXT(payload_type_names, SECURITY_ASSOCIATION_V1, CONFIGURATION_V1, NO_PAYLOAD,
"SECURITY_ASSOCIATION_V1",
"PROPOSAL_V1",
"TRANSFORM_V1",
"KEY_EXCHANGE_V1",
"ID_V1",
"CERTIFICATE_V1",
"CERTIFICATE_REQUEST_V1",
"HASH_V1",
"SIGNATURE_V1",
"NONCE_V1",
"NOTIFY_V1",
"DELETE_V1",
"VENDOR_ID_V1",
"CONFIGURATION_V1");
ENUM_NEXT(payload_type_names, NAT_D_V1, NAT_OA_V1, CONFIGURATION_V1,
"NAT_D_V1",
"NAT_OA_V1");
ENUM_NEXT(payload_type_names, SECURITY_ASSOCIATION, EXTENSIBLE_AUTHENTICATION, NAT_OA_V1,
"SECURITY_ASSOCIATION",
"KEY_EXCHANGE",
"ID_INITIATOR",
"ID_RESPONDER",
"CERTIFICATE",
"CERTIFICATE_REQUEST",
"AUTHENTICATION",
"NONCE",
"NOTIFY",
"DELETE",
"VENDOR_ID",
"TRAFFIC_SELECTOR_INITIATOR",
"TRAFFIC_SELECTOR_RESPONDER",
"ENCRYPTED",
"CONFIGURATION",
"EXTENSIBLE_AUTHENTICATION");
#ifdef ME
ENUM_NEXT(payload_type_names, ID_PEER, ID_PEER, EXTENSIBLE_AUTHENTICATION,
"ID_PEER");
ENUM_NEXT(payload_type_names, HEADER, ENCRYPTED_V1, ID_PEER,
"HEADER",
"PROPOSAL_SUBSTRUCTURE",
"PROPOSAL_SUBSTRUCTURE_V1",
"TRANSFORM_SUBSTRUCTURE",
"TRANSFORM_SUBSTRUCTURE_V1",
"TRANSFORM_ATTRIBUTE",
"TRANSFORM_ATTRIBUTE_V1",
"TRAFFIC_SELECTOR_SUBSTRUCTURE",
"CONFIGURATION_ATTRIBUTE",
"CONFIGURATION_ATTRIBUTE_V1",
"ENCRYPTED_V1");
#else
ENUM_NEXT(payload_type_names, HEADER, ENCRYPTED_V1, EXTENSIBLE_AUTHENTICATION,
"HEADER",
"PROPOSAL_SUBSTRUCTURE",
"PROPOSAL_SUBSTRUCTURE_V1",
"TRANSFORM_SUBSTRUCTURE",
"TRANSFORM_SUBSTRUCTURE_V1",
"TRANSFORM_ATTRIBUTE",
"TRANSFORM_ATTRIBUTE_V1",
"TRAFFIC_SELECTOR_SUBSTRUCTURE",
"CONFIGURATION_ATTRIBUTE",
"CONFIGURATION_ATTRIBUTE_V1",
"ENCRYPTED_V1");
#endif /* ME */
ENUM_END(payload_type_names, ENCRYPTED_V1);
/* short forms of payload names */
ENUM_BEGIN(payload_type_short_names, NO_PAYLOAD, NO_PAYLOAD,
"--");
ENUM_NEXT(payload_type_short_names, SECURITY_ASSOCIATION_V1, CONFIGURATION_V1, NO_PAYLOAD,
"SA",
"PROP",
"TRANS",
"KE",
"ID",
"CERT",
"CERTREQ",
"HASH",
"SIG",
"No",
"N",
"D",
"V",
"CP");
ENUM_NEXT(payload_type_short_names, NAT_D_V1, NAT_OA_V1, CONFIGURATION_V1,
"NAT-D",
"NAT-OA");
ENUM_NEXT(payload_type_short_names, SECURITY_ASSOCIATION, EXTENSIBLE_AUTHENTICATION, NAT_OA_V1,
"SA",
"KE",
"IDi",
"IDr",
"CERT",
"CERTREQ",
"AUTH",
"No",
"N",
"D",
"V",
"TSi",
"TSr",
"E",
"CP",
"EAP");
#ifdef ME
ENUM_NEXT(payload_type_short_names, ID_PEER, ID_PEER, EXTENSIBLE_AUTHENTICATION,
"IDp");
ENUM_NEXT(payload_type_short_names, HEADER, ENCRYPTED_V1, ID_PEER,
"HDR",
"PROP",
"PROP",
"TRANS",
"TRANS",
"TRANSATTR",
"TRANSATTR",
"TSSUB",
"CATTR",
"CATTR",
"E");
#else
ENUM_NEXT(payload_type_short_names, HEADER, ENCRYPTED_V1, EXTENSIBLE_AUTHENTICATION,
"HDR",
"PROP",
"PROP",
"TRANS",
"TRANS",
"TRANSATTR",
"TRANSATTR",
"TSSUB",
"CATTR",
"CATTR",
"E");
#endif /* ME */
ENUM_END(payload_type_short_names, ENCRYPTED_V1);
/*
* see header
*/
payload_t *payload_create(payload_type_t type)
{
switch (type)
{
case HEADER:
return (payload_t*)ike_header_create();
case SECURITY_ASSOCIATION:
case SECURITY_ASSOCIATION_V1:
return (payload_t*)sa_payload_create(type);
case PROPOSAL_SUBSTRUCTURE:
case PROPOSAL_SUBSTRUCTURE_V1:
return (payload_t*)proposal_substructure_create(type);
case TRANSFORM_SUBSTRUCTURE:
case TRANSFORM_SUBSTRUCTURE_V1:
return (payload_t*)transform_substructure_create(type);
case TRANSFORM_ATTRIBUTE:
case TRANSFORM_ATTRIBUTE_V1:
return (payload_t*)transform_attribute_create(type);
case NONCE:
case NONCE_V1:
return (payload_t*)nonce_payload_create(type);
case ID_INITIATOR:
case ID_RESPONDER:
case ID_V1:
case NAT_OA_V1:
#ifdef ME
case ID_PEER:
#endif /* ME */
return (payload_t*)id_payload_create(type);
case AUTHENTICATION:
return (payload_t*)auth_payload_create();
case CERTIFICATE:
case CERTIFICATE_V1:
return (payload_t*)cert_payload_create(type);
case CERTIFICATE_REQUEST:
case CERTIFICATE_REQUEST_V1:
return (payload_t*)certreq_payload_create(type);
case TRAFFIC_SELECTOR_SUBSTRUCTURE:
return (payload_t*)traffic_selector_substructure_create();
case TRAFFIC_SELECTOR_INITIATOR:
return (payload_t*)ts_payload_create(TRUE);
case TRAFFIC_SELECTOR_RESPONDER:
return (payload_t*)ts_payload_create(FALSE);
case KEY_EXCHANGE:
case KEY_EXCHANGE_V1:
return (payload_t*)ke_payload_create(type);
case NOTIFY:
case NOTIFY_V1:
return (payload_t*)notify_payload_create(type);
case DELETE:
case DELETE_V1:
return (payload_t*)delete_payload_create(type, 0);
case VENDOR_ID:
case VENDOR_ID_V1:
return (payload_t*)vendor_id_payload_create(type);
case HASH_V1:
case SIGNATURE_V1:
case NAT_D_V1:
return (payload_t*)hash_payload_create(type);
case CONFIGURATION:
case CONFIGURATION_V1:
return (payload_t*)cp_payload_create(type);
case CONFIGURATION_ATTRIBUTE:
case CONFIGURATION_ATTRIBUTE_V1:
return (payload_t*)configuration_attribute_create(type);
case EXTENSIBLE_AUTHENTICATION:
return (payload_t*)eap_payload_create();
case ENCRYPTED:
case ENCRYPTED_V1:
return (payload_t*)encryption_payload_create(type);
default:
return (payload_t*)unknown_payload_create(type);
}
}
/**
* See header.
*/
bool payload_is_known(payload_type_t type)
{
if (type == HEADER)
{
return TRUE;
}
if (type >= SECURITY_ASSOCIATION && type <= EXTENSIBLE_AUTHENTICATION)
{
return TRUE;
}
if (type >= SECURITY_ASSOCIATION_V1 && type <= CONFIGURATION_V1)
{
return TRUE;
}
if (type >= NAT_D_V1 && type <= NAT_OA_V1)
{
return TRUE;
}
#ifdef ME
if (type == ID_PEER)
{
return TRUE;
}
#endif
return FALSE;
}
/**
* See header.
*/
void* payload_get_field(payload_t *payload, encoding_type_t type, u_int skip)
{
encoding_rule_t *rule;
int i, count;
count = payload->get_encoding_rules(payload, &rule);
for (i = 0; i < count; i++)
{
if (rule[i].type == type && skip-- == 0)
{
return ((char*)payload) + rule[i].offset;
}
}
return NULL;
}
|
