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
|
/*
* Copyright (C) 2009 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.
*
* $Id: identification.h 5003 2009-03-24 17:43:01Z martin $
*/
/**
* @defgroup identification identification
* @{ @ingroup utils
*/
#ifndef IDENTIFICATION_H_
#define IDENTIFICATION_H_
typedef enum id_type_t id_type_t;
typedef struct identification_t identification_t;
typedef enum id_match_t id_match_t;
#include <library.h>
/**
* Matches returned from identification_t.match
*/
enum id_match_t {
/* no match */
ID_MATCH_NONE = 0,
/* match to %any ID */
ID_MATCH_ANY = 1,
/* match with maximum allowed wildcards */
ID_MATCH_MAX_WILDCARDS = 2,
/* match with only one wildcard */
ID_MATCH_ONE_WILDCARD = 19,
/* perfect match, won't get better */
ID_MATCH_PERFECT = 20,
};
/**
* enum names for id_match_t.
*/
extern enum_name_t *id_match_names;
/**
* ID Types in a ID payload.
*/
enum id_type_t {
/**
* private type which matches any other id.
*/
ID_ANY = 0,
/**
* ID data is a single four (4) octet IPv4 address.
*/
ID_IPV4_ADDR = 1,
/**
* ID data is a fully-qualified domain name string.
* An example of a ID_FQDN is "example.com".
* The string MUST not contain any terminators (e.g., NULL, CR, etc.).
*/
ID_FQDN = 2,
/**
* ID data is a fully-qualified RFC822 email address string.
* An example of an ID_RFC822_ADDR is "jsmith@example.com".
* The string MUST NOT contain any terminators.
*/
ID_RFC822_ADDR = 3,
/**
* ID data is an IPv4 subnet (IKEv1 only)
*/
ID_IPV4_ADDR_SUBNET = 4,
/**
* ID data is a single sixteen (16) octet IPv6 address.
*/
ID_IPV6_ADDR = 5,
/**
* ID data is an IPv6 subnet (IKEv1 only)
*/
ID_IPV6_ADDR_SUBNET = 6,
/**
* ID data is an IPv4 address range (IKEv1 only)
*/
ID_IPV4_ADDR_RANGE = 7,
/**
* ID data is an IPv6 address range (IKEv1 only)
*/
ID_IPV6_ADDR_RANGE = 8,
/**
* ID data is the binary DER encoding of an ASN.1 X.501 Distinguished Name
*/
ID_DER_ASN1_DN = 9,
/**
* ID data is the binary DER encoding of an ASN.1 X.509 GeneralName
*/
ID_DER_ASN1_GN = 10,
/**
* ID data is an opaque octet stream which may be used to pass vendor-
* specific information necessary to do certain proprietary
* types of identification.
*/
ID_KEY_ID = 11,
/**
* private type which represents a GeneralName of type URI
*/
ID_DER_ASN1_GN_URI = 201,
/**
* SHA1 hash over PKCS#1 subjectPublicKeyInfo
*/
ID_PUBKEY_INFO_SHA1 = 202,
/**
* SHA1 hash over PKCS#1 subjectPublicKey
*/
ID_PUBKEY_SHA1 = 203,
/**
* SHA1 hash of the binary DER encoding of a certificate
*/
ID_CERT_DER_SHA1 = 204,
/**
* Generic EAP identity
*/
ID_EAP = 205,
/**
* IETF Attribute Syntax String (RFC 3281)
*/
ID_IETF_ATTR_STRING = 206,
};
/**
* enum names for id_type_t.
*/
extern enum_name_t *id_type_names;
/**
* Generic identification, such as used in ID payload.
*
* @todo Support for ID_DER_ASN1_GN is minimal right now. Comparison
* between them and ID_IPV4_ADDR/RFC822_ADDR would be nice.
*/
struct identification_t {
/**
* Get the encoding of this id, to send over
* the network.
*
* Result points to internal data, do not free.
*
* @return a chunk containing the encoded bytes
*/
chunk_t (*get_encoding) (identification_t *this);
/**
* Get the type of this identification.
*
* @return id_type_t
*/
id_type_t (*get_type) (identification_t *this);
/**
* Check if two identification_t objects are equal.
*
* @param other other identification_t object
* @return TRUE if the IDs are equal
*/
bool (*equals) (identification_t *this, identification_t *other);
/**
* Check if an ID matches a wildcard ID.
*
* An identification_t may contain wildcards, such as
* *.strongswan.org. This call checks if a given ID
* (e.g. tester.strongswan.org) belongs to a such wildcard
* ID. Returns > 0 if
* - IDs are identical
* - other is of type ID_ANY
* - other contains a wildcard and matches this
*
* The larger the return value is, the better is the match. Zero means
* no match at all, 1 means a bad match, and 2 a slightly better match.
*
* @param other the ID containing one or more wildcards
* @param wildcards returns the number of wildcards, may be NULL
* @return match value as described above
*/
id_match_t (*matches) (identification_t *this, identification_t *other);
/**
* Check if an ID is a wildcard ID.
*
* If the ID represents multiple IDs (with wildcards, or
* as the type ID_ANY), TRUE is returned. If it is unique,
* FALSE is returned.
*
* @return TRUE if ID contains wildcards
*/
bool (*contains_wildcards) (identification_t *this);
/**
* Clone a identification_t instance.
*
* @return clone of this
*/
identification_t *(*clone) (identification_t *this);
/**
* Destroys a identification_t object.
*/
void (*destroy) (identification_t *this);
};
/**
* Creates an identification_t object from a string.
*
* The input string may be e.g. one of the following:
* - ID_IPV4_ADDR: 192.168.0.1
* - ID_IPV6_ADDR: 2001:0db8:85a3:08d3:1319:8a2e:0370:7345
* - ID_FQDN: www.strongswan.org (optionally with a prepended @)
* - ID_RFC822_ADDR: alice@wonderland.org
* - ID_DER_ASN1_DN: C=CH, O=Linux strongSwan, CN=bob
*
* In favour of pluto, domainnames are prepended with an @, since
* pluto resolves domainnames without an @ to IPv4 addresses. Since
* we use a seperate host_t class for addresses, this doesn't
* make sense for us.
*
* A distinguished name may contain one or more of the following RDNs:
* ND, UID, DC, CN, S, SN, serialNumber, C, L, ST, O, OU, T, D,
* N, G, I, ID, EN, EmployeeNumber, E, Email, emailAddress, UN,
* unstructuredName, TCGID.
*
* @param string input string, which will be converted
* @return created identification_t, NULL if not supported.
*/
identification_t * identification_create_from_string(char *string);
/**
* Creates an identification_t object from an encoded chunk.
*
* In contrast to identification_create_from_string(), this constructor never
* returns NULL, even when the conversion to a string representation fails.
*
* @param type type of this id, such as ID_IPV4_ADDR
* @param encoded encoded bytes, such as from identification_t.get_encoding
* @return identification_t
*/
identification_t * identification_create_from_encoding(id_type_t type, chunk_t encoded);
/**
* printf hook function for identification_t.
*
* Arguments are:
* identification_t *identification
*/
int identification_printf_hook(char *dst, size_t len, printf_hook_spec_t *spec,
const void *const *args);
#endif /** IDENTIFICATION_H_ @}*/
|
