libnl: /data/src/libnl3/lib/xfrm/template.c Source File

libnl 3.7.0

template.c
1 /* SPDX-License-Identifier: LGPL-2.1-only */
2 /*
3 * Copyright (C) 2012 Texas Instruments Incorporated - http://www.ti.com/
4 *
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 *
10 * Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 *
13 * Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the
16 * distribution.
17 *
18 * Neither the name of Texas Instruments Incorporated nor the names of
19 * its contributors may be used to endorse or promote products derived
20 * from this software without specific prior written permission.
21 *
22 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
23 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
24 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
25 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
26 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
27 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
28 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
29 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
30 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
31 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
32 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
33 *
34 */
35 /**
36 * @ingroup xfrmnl
37 * @defgroup XFRM User Template Object
38 *
39 * Abstract data type representing XFRM SA properties
40 *
41 * @{
42 *
43 * Header
44 * ------
45 * ~~~~{.c}
46 * #include <netlink/xfrm/template.h>
47 * ~~~~
48 */
49
50 #include <netlink/xfrm/template.h>
51 #include <netlink-private/netlink.h>
52
53 void xfrmnl_user_tmpl_free(struct xfrmnl_user_tmpl* utmpl)
54 {
55 if (!utmpl)
56 return;
57
58 nl_addr_put (utmpl->id.daddr);
59 nl_addr_put (utmpl->saddr);
60 free(utmpl);
61 }
62
63 /**
64 * @name Creating User Template Object
65 * @{
66 */
67
68 /**
69 * Allocate new user template object.
70 * @return Newly allocated user template object or NULL
71 */
72 struct xfrmnl_user_tmpl* xfrmnl_user_tmpl_alloc()
73 {
74 struct xfrmnl_user_tmpl* utmpl;
75
76 utmpl = calloc(1, sizeof(struct xfrmnl_user_tmpl));
77 if (!utmpl)
78 return NULL;
79
80 nl_init_list_head(&utmpl->utmpl_list);
81
82 return utmpl;
83 }
84
85 /**
86 * Clone existing user template object.
87 * @arg utmpl Selector object.
88 * @return Newly allocated user template object being a duplicate of the
89 * specified user template object or NULL if a failure occured.
90 */
91 struct xfrmnl_user_tmpl* xfrmnl_user_tmpl_clone(struct xfrmnl_user_tmpl* utmpl)
92 {
93 struct xfrmnl_user_tmpl* new;
94
95 new = xfrmnl_user_tmpl_alloc();
96 if (!new)
97 return NULL;
98
99 memcpy(new, utmpl, sizeof(struct xfrmnl_user_tmpl));
100 new->id.daddr = nl_addr_clone (utmpl->id.daddr);
101 new->saddr = nl_addr_clone (utmpl->saddr);
102
103 return new;
104 }
105
106 /** @} */
107
108 /**
109 * @name XFRM Template Mode Translations
110 * @{
111 */
112 static const struct trans_tbl tmpl_modes[] = {
113 __ADD(XFRM_MODE_TRANSPORT, transport),
114 __ADD(XFRM_MODE_TUNNEL, tunnel),
115 __ADD(XFRM_MODE_ROUTEOPTIMIZATION, route optimization),
116 __ADD(XFRM_MODE_IN_TRIGGER, in trigger),
117 __ADD(XFRM_MODE_BEET, beet),
118 };
119
120 char* xfrmnl_user_tmpl_mode2str(int mode, char *buf, size_t len)
121 {
122 return __type2str (mode, buf, len, tmpl_modes, ARRAY_SIZE(tmpl_modes));
123 }
124
125 int xfrmnl_user_tmpl_str2mode(const char *name)
126 {
127 return __str2type (name, tmpl_modes, ARRAY_SIZE(tmpl_modes));
128 }
129 /** @} */
130
131 /**
132 * @name Miscellaneous
133 * @{
134 */
135
136 /**
137 * Compares two user template objects.
138 * @arg a A user template object.
139 * @arg b Another user template object.
140 *
141 * @return Non zero if difference is found, 0 otherwise if both
142 * the objects are identical.
143 */
144 int xfrmnl_user_tmpl_cmp(struct xfrmnl_user_tmpl* a, struct xfrmnl_user_tmpl* b)
145 {
146 /* Check for any differences */
147 if ((nl_addr_cmp_prefix (a->id.daddr, b->id.daddr) != 0) ||
148 (a->id.spi != b->id.spi) ||
149 (a->id.proto && (a->id.proto != b->id.proto)) ||
150 (nl_addr_cmp_prefix (a->saddr, b->saddr) != 0) ||
151 (a->family != b->family) ||
152 (a->reqid != b->reqid) ||
153 (a->mode != b->mode) ||
154 (a->share != b->share) ||
155 (a->aalgos != b->aalgos) ||
156 (a->ealgos != b->ealgos) ||
157 (a->calgos != b->calgos))
158 return 1;
159
160 /* The objects are identical */
161 return 0;
162 }
163
164 void xfrmnl_user_tmpl_dump(struct xfrmnl_user_tmpl* tmpl, struct nl_dump_params *p)
165 {
166 char dst[INET6_ADDRSTRLEN+5], src[INET6_ADDRSTRLEN+5];
167 char buf [128];
168
169 nl_dump_line(p, "\t\tsrc %s dst %s family: %s \n",
170 nl_addr2str(tmpl->saddr, src, sizeof(src)),
171 nl_addr2str (tmpl->id.daddr, dst, sizeof (dst)),
172 nl_af2str (tmpl->family, buf, 128));
173 nl_dump_line (p, "\t\tprotocol: %s spi: 0x%x reqid: %u mode: %s\n",
174 nl_ip_proto2str (tmpl->id.proto, buf, sizeof(buf)),
175 tmpl->id.spi, tmpl->reqid,
176 xfrmnl_user_tmpl_mode2str (tmpl->mode, buf, 128));
177 nl_dump_line (p, "\t\tAuth Algo: 0x%x Crypto Algo: 0x%x Compr Algo: 0x%x\n",
178 tmpl->aalgos, tmpl->ealgos, tmpl->calgos);
179
180 return;
181 }
182
183 /** @} */
184
185 /**
186 * @name Attributes
187 * @{
188 */
189 struct nl_addr* xfrmnl_user_tmpl_get_daddr (struct xfrmnl_user_tmpl* utmpl)
190 {
191 return utmpl->id.daddr;
192 }
193
194 int xfrmnl_user_tmpl_set_daddr (struct xfrmnl_user_tmpl* utmpl, struct nl_addr* addr)
195 {
196 /* Increment reference counter on this to keep this address
197 * object around while user template in use */
198 nl_addr_get(addr);
199
200 utmpl->id.daddr = addr;
201
202 return 0;
203 }
204
205 int xfrmnl_user_tmpl_get_spi (struct xfrmnl_user_tmpl* utmpl)
206 {
207 return utmpl->id.spi;
208 }
209
210 int xfrmnl_user_tmpl_set_spi (struct xfrmnl_user_tmpl* utmpl, unsigned int spi)
211 {
212 utmpl->id.spi = spi;
213
214 return 0;
215 }
216
217 int xfrmnl_user_tmpl_get_proto (struct xfrmnl_user_tmpl* utmpl)
218 {
219 return utmpl->id.proto;
220 }
221
222 int xfrmnl_user_tmpl_set_proto (struct xfrmnl_user_tmpl* utmpl, unsigned int protocol)
223 {
224 utmpl->id.proto = protocol;
225
226 return 0;
227 }
228
229 int xfrmnl_user_tmpl_get_family(struct xfrmnl_user_tmpl *utmpl)
230 {
231 return utmpl->family;
232 }
233
234 int xfrmnl_user_tmpl_set_family(struct xfrmnl_user_tmpl *utmpl, unsigned int family)
235 {
236 utmpl->family = family;
237
238 return 0;
239 }
240
241 struct nl_addr* xfrmnl_user_tmpl_get_saddr (struct xfrmnl_user_tmpl* utmpl)
242 {
243 return utmpl->saddr;
244 }
245
246 int xfrmnl_user_tmpl_set_saddr (struct xfrmnl_user_tmpl* utmpl, struct nl_addr* addr)
247 {
248 /* Increment reference counter on this to keep this address
249 * object around while user template in use */
250 nl_addr_get(addr);
251
252 utmpl->saddr = addr;
253
254 return 0;
255 }
256
257 int xfrmnl_user_tmpl_get_reqid (struct xfrmnl_user_tmpl* utmpl)
258 {
259 return utmpl->reqid;
260 }
261
262 int xfrmnl_user_tmpl_set_reqid (struct xfrmnl_user_tmpl* utmpl, unsigned int reqid)
263 {
264 utmpl->reqid = reqid;
265
266 return 0;
267 }
268
269 int xfrmnl_user_tmpl_get_mode (struct xfrmnl_user_tmpl* utmpl)
270 {
271 return utmpl->mode;
272 }
273
274 int xfrmnl_user_tmpl_set_mode (struct xfrmnl_user_tmpl* utmpl, unsigned int mode)
275 {
276 utmpl->mode = mode;
277
278 return 0;
279 }
280
281 int xfrmnl_user_tmpl_get_share (struct xfrmnl_user_tmpl* utmpl)
282 {
283 return utmpl->share;
284 }
285
286 int xfrmnl_user_tmpl_set_share (struct xfrmnl_user_tmpl* utmpl, unsigned int share)
287 {
288 utmpl->share = share;
289
290 return 0;
291 }
292
293 int xfrmnl_user_tmpl_get_optional (struct xfrmnl_user_tmpl* utmpl)
294 {
295 return utmpl->optional;
296 }
297
298 int xfrmnl_user_tmpl_set_optional (struct xfrmnl_user_tmpl* utmpl, unsigned int optional)
299 {
300 utmpl->optional = optional;
301
302 return 0;
303 }
304
305 int xfrmnl_user_tmpl_get_aalgos (struct xfrmnl_user_tmpl* utmpl)
306 {
307 return utmpl->aalgos;
308 }
309
310 int xfrmnl_user_tmpl_set_aalgos (struct xfrmnl_user_tmpl* utmpl, unsigned int aalgos)
311 {
312 utmpl->aalgos = aalgos;
313
314 return 0;
315 }
316
317 int xfrmnl_user_tmpl_get_ealgos (struct xfrmnl_user_tmpl* utmpl)
318 {
319 return utmpl->ealgos;
320 }
321
322 int xfrmnl_user_tmpl_set_ealgos (struct xfrmnl_user_tmpl* utmpl, unsigned int ealgos)
323 {
324 utmpl->ealgos = ealgos;
325
326 return 0;
327 }
328
329 int xfrmnl_user_tmpl_get_calgos (struct xfrmnl_user_tmpl* utmpl)
330 {
331 return utmpl->calgos;
332 }
333
334 int xfrmnl_user_tmpl_set_calgos (struct xfrmnl_user_tmpl* utmpl, unsigned int calgos)
335 {
336 utmpl->calgos = calgos;
337
338 return 0;
339 }
340
341 /** @} */
xfrmnl_user_tmpl_cmp
int xfrmnl_user_tmpl_cmp(struct xfrmnl_user_tmpl *a, struct xfrmnl_user_tmpl *b)
Compares two user template objects.
Definition: template.c:144
xfrmnl_user_tmpl_clone
struct xfrmnl_user_tmpl * xfrmnl_user_tmpl_clone(struct xfrmnl_user_tmpl *utmpl)
Clone existing user template object.
Definition: template.c:91
xfrmnl_user_tmpl_alloc
struct xfrmnl_user_tmpl * xfrmnl_user_tmpl_alloc()
Allocate new user template object.
Definition: template.c:72
nl_addr2str
char * nl_addr2str(const struct nl_addr *addr, char *buf, size_t size)
Convert abstract address object to character string.
Definition: addr.c:993
nl_addr_cmp_prefix
int nl_addr_cmp_prefix(const struct nl_addr *a, const struct nl_addr *b)
Compare the prefix of two abstract addresses.
Definition: addr.c:618
nl_addr_clone
struct nl_addr * nl_addr_clone(const struct nl_addr *addr)
Clone existing abstract address object.
Definition: addr.c:487
nl_addr_get
struct nl_addr * nl_addr_get(struct nl_addr *addr)
Increase the reference counter of an abstract address.
Definition: addr.c:517
nl_addr_put
void nl_addr_put(struct nl_addr *addr)
Decrease the reference counter of an abstract address.
Definition: addr.c:533
nl_dump_params
Dumping parameters.
Definition: types.h:28