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53e1b683 | 1 | /* SPDX-License-Identifier: LGPL-2.1+ */ |
3fb2c570 PF |
2 | /*** |
3 | This file is part of systemd. | |
4 | ||
5 | Copyright (C) 2014 Tom Gundersen | |
5da1b97f | 6 | Copyright (C) 2014-2015 Intel Corporation. All rights reserved. |
3fb2c570 PF |
7 | |
8 | systemd is free software; you can redistribute it and/or modify it | |
9 | under the terms of the GNU Lesser General Public License as published by | |
10 | the Free Software Foundation; either version 2.1 of the License, or | |
11 | (at your option) any later version. | |
12 | ||
13 | systemd is distributed in the hope that it will be useful, but | |
14 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
16 | Lesser General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU Lesser General Public License | |
19 | along with systemd; If not, see <http://www.gnu.org/licenses/>. | |
20 | ***/ | |
21 | ||
22 | #include <errno.h> | |
23 | ||
b5efdb8a | 24 | #include "alloc-util.h" |
3fb2c570 | 25 | #include "dhcp6-lease-internal.h" |
6599680e | 26 | #include "dhcp6-protocol.h" |
b5efdb8a LP |
27 | #include "strv.h" |
28 | #include "util.h" | |
3fb2c570 PF |
29 | |
30 | int dhcp6_lease_clear_timers(DHCP6IA *ia) { | |
31 | assert_return(ia, -EINVAL); | |
32 | ||
33 | ia->timeout_t1 = sd_event_source_unref(ia->timeout_t1); | |
34 | ia->timeout_t2 = sd_event_source_unref(ia->timeout_t2); | |
35 | ||
36 | return 0; | |
37 | } | |
38 | ||
709d6710 PF |
39 | int dhcp6_lease_ia_rebind_expire(const DHCP6IA *ia, uint32_t *expire) { |
40 | DHCP6Address *addr; | |
41 | uint32_t valid = 0, t; | |
42 | ||
43 | assert_return(ia, -EINVAL); | |
44 | assert_return(expire, -EINVAL); | |
45 | ||
46 | LIST_FOREACH(addresses, addr, ia->addresses) { | |
ee3a5027 | 47 | t = be32toh(addr->iaaddr.lifetime_valid); |
709d6710 PF |
48 | if (valid < t) |
49 | valid = t; | |
50 | } | |
51 | ||
52 | t = be32toh(ia->lifetime_t2); | |
53 | if (t > valid) | |
54 | return -EINVAL; | |
55 | ||
56 | *expire = valid - t; | |
57 | ||
58 | return 0; | |
59 | } | |
60 | ||
3fb2c570 PF |
61 | DHCP6IA *dhcp6_lease_free_ia(DHCP6IA *ia) { |
62 | DHCP6Address *address; | |
63 | ||
64 | if (!ia) | |
65 | return NULL; | |
66 | ||
67 | dhcp6_lease_clear_timers(ia); | |
68 | ||
69 | while (ia->addresses) { | |
70 | address = ia->addresses; | |
71 | ||
72 | LIST_REMOVE(addresses, ia->addresses, address); | |
73 | ||
74 | free(address); | |
75 | } | |
76 | ||
77 | return NULL; | |
78 | } | |
79 | ||
80 | int dhcp6_lease_set_serverid(sd_dhcp6_lease *lease, const uint8_t *id, | |
81 | size_t len) { | |
82 | assert_return(lease, -EINVAL); | |
83 | assert_return(id, -EINVAL); | |
84 | ||
85 | free(lease->serverid); | |
86 | ||
87 | lease->serverid = memdup(id, len); | |
88 | if (!lease->serverid) | |
89 | return -EINVAL; | |
90 | ||
91 | lease->serverid_len = len; | |
92 | ||
93 | return 0; | |
94 | } | |
95 | ||
96 | int dhcp6_lease_get_serverid(sd_dhcp6_lease *lease, uint8_t **id, size_t *len) { | |
97 | assert_return(lease, -EINVAL); | |
98 | assert_return(id, -EINVAL); | |
99 | assert_return(len, -EINVAL); | |
100 | ||
101 | *id = lease->serverid; | |
102 | *len = lease->serverid_len; | |
103 | ||
104 | return 0; | |
105 | } | |
106 | ||
107 | int dhcp6_lease_set_preference(sd_dhcp6_lease *lease, uint8_t preference) { | |
108 | assert_return(lease, -EINVAL); | |
109 | ||
110 | lease->preference = preference; | |
111 | ||
112 | return 0; | |
113 | } | |
114 | ||
115 | int dhcp6_lease_get_preference(sd_dhcp6_lease *lease, uint8_t *preference) { | |
3fb2c570 PF |
116 | assert_return(preference, -EINVAL); |
117 | ||
fab15fec PF |
118 | if (!lease) |
119 | return -EINVAL; | |
120 | ||
3fb2c570 PF |
121 | *preference = lease->preference; |
122 | ||
123 | return 0; | |
124 | } | |
125 | ||
ed6ee219 PF |
126 | int dhcp6_lease_set_rapid_commit(sd_dhcp6_lease *lease) { |
127 | assert_return(lease, -EINVAL); | |
128 | ||
129 | lease->rapid_commit = true; | |
130 | ||
131 | return 0; | |
132 | } | |
133 | ||
134 | int dhcp6_lease_get_rapid_commit(sd_dhcp6_lease *lease, bool *rapid_commit) { | |
135 | assert_return(lease, -EINVAL); | |
136 | assert_return(rapid_commit, -EINVAL); | |
137 | ||
138 | *rapid_commit = lease->rapid_commit; | |
139 | ||
140 | return 0; | |
141 | } | |
142 | ||
3fb2c570 PF |
143 | int dhcp6_lease_get_iaid(sd_dhcp6_lease *lease, be32_t *iaid) { |
144 | assert_return(lease, -EINVAL); | |
145 | assert_return(iaid, -EINVAL); | |
146 | ||
147 | *iaid = lease->ia.id; | |
148 | ||
149 | return 0; | |
150 | } | |
151 | ||
e7504d95 PF |
152 | int sd_dhcp6_lease_get_address(sd_dhcp6_lease *lease, struct in6_addr *addr, |
153 | uint32_t *lifetime_preferred, | |
154 | uint32_t *lifetime_valid) { | |
ea3b3a75 PF |
155 | assert_return(lease, -EINVAL); |
156 | assert_return(addr, -EINVAL); | |
157 | assert_return(lifetime_preferred, -EINVAL); | |
158 | assert_return(lifetime_valid, -EINVAL); | |
159 | ||
160 | if (!lease->addr_iter) | |
161 | return -ENOMSG; | |
162 | ||
ee3a5027 PF |
163 | memcpy(addr, &lease->addr_iter->iaaddr.address, |
164 | sizeof(struct in6_addr)); | |
165 | *lifetime_preferred = | |
166 | be32toh(lease->addr_iter->iaaddr.lifetime_preferred); | |
167 | *lifetime_valid = be32toh(lease->addr_iter->iaaddr.lifetime_valid); | |
ea3b3a75 PF |
168 | |
169 | lease->addr_iter = lease->addr_iter->addresses_next; | |
170 | ||
171 | return 0; | |
172 | } | |
173 | ||
e7504d95 PF |
174 | void sd_dhcp6_lease_reset_address_iter(sd_dhcp6_lease *lease) { |
175 | if (lease) | |
176 | lease->addr_iter = lease->ia.addresses; | |
ea3b3a75 PF |
177 | } |
178 | ||
7bd8e95d PF |
179 | int dhcp6_lease_set_dns(sd_dhcp6_lease *lease, uint8_t *optval, size_t optlen) { |
180 | int r; | |
181 | ||
182 | assert_return(lease, -EINVAL); | |
183 | assert_return(optval, -EINVAL); | |
184 | ||
185 | if (!optlen) | |
186 | return 0; | |
187 | ||
188 | r = dhcp6_option_parse_ip6addrs(optval, optlen, &lease->dns, | |
189 | lease->dns_count, | |
190 | &lease->dns_allocated); | |
191 | if (r < 0) { | |
192 | log_dhcp6_client(client, "Invalid DNS server option: %s", | |
193 | strerror(-r)); | |
194 | ||
195 | return r; | |
196 | } | |
197 | ||
198 | lease->dns_count = r; | |
199 | ||
200 | return 0; | |
201 | } | |
202 | ||
203 | int sd_dhcp6_lease_get_dns(sd_dhcp6_lease *lease, struct in6_addr **addrs) { | |
204 | assert_return(lease, -EINVAL); | |
205 | assert_return(addrs, -EINVAL); | |
206 | ||
207 | if (lease->dns_count) { | |
208 | *addrs = lease->dns; | |
209 | return lease->dns_count; | |
210 | } | |
211 | ||
212 | return -ENOENT; | |
213 | } | |
214 | ||
5da1b97f PF |
215 | int dhcp6_lease_set_domains(sd_dhcp6_lease *lease, uint8_t *optval, |
216 | size_t optlen) { | |
217 | int r; | |
218 | char **domains; | |
219 | ||
220 | assert_return(lease, -EINVAL); | |
221 | assert_return(optval, -EINVAL); | |
222 | ||
223 | if (!optlen) | |
224 | return 0; | |
225 | ||
226 | r = dhcp6_option_parse_domainname(optval, optlen, &domains); | |
227 | if (r < 0) | |
228 | return 0; | |
229 | ||
0b75a95a | 230 | strv_free(lease->domains); |
5da1b97f PF |
231 | lease->domains = domains; |
232 | lease->domains_count = r; | |
233 | ||
234 | return r; | |
235 | } | |
236 | ||
237 | int sd_dhcp6_lease_get_domains(sd_dhcp6_lease *lease, char ***domains) { | |
238 | assert_return(lease, -EINVAL); | |
239 | assert_return(domains, -EINVAL); | |
240 | ||
241 | if (lease->domains_count) { | |
242 | *domains = lease->domains; | |
243 | return lease->domains_count; | |
244 | } | |
245 | ||
246 | return -ENOENT; | |
247 | } | |
248 | ||
52efd56a | 249 | int dhcp6_lease_set_ntp(sd_dhcp6_lease *lease, uint8_t *optval, size_t optlen) { |
6599680e PF |
250 | int r; |
251 | uint16_t subopt; | |
252 | size_t sublen; | |
253 | uint8_t *subval; | |
254 | ||
255 | assert_return(lease, -EINVAL); | |
256 | assert_return(optval, -EINVAL); | |
257 | ||
63a54aa1 | 258 | lease->ntp = mfree(lease->ntp); |
41e4615d PF |
259 | lease->ntp_count = 0; |
260 | lease->ntp_allocated = 0; | |
261 | ||
6599680e PF |
262 | while ((r = dhcp6_option_parse(&optval, &optlen, &subopt, &sublen, |
263 | &subval)) >= 0) { | |
264 | int s; | |
265 | char **servers; | |
266 | ||
267 | switch(subopt) { | |
268 | case DHCP6_NTP_SUBOPTION_SRV_ADDR: | |
269 | case DHCP6_NTP_SUBOPTION_MC_ADDR: | |
270 | if (sublen != 16) | |
271 | return 0; | |
272 | ||
273 | s = dhcp6_option_parse_ip6addrs(subval, sublen, | |
274 | &lease->ntp, | |
275 | lease->ntp_count, | |
276 | &lease->ntp_allocated); | |
277 | if (s < 0) | |
278 | return s; | |
279 | ||
280 | lease->ntp_count = s; | |
281 | ||
282 | break; | |
283 | ||
284 | case DHCP6_NTP_SUBOPTION_SRV_FQDN: | |
285 | r = dhcp6_option_parse_domainname(subval, sublen, | |
286 | &servers); | |
287 | if (r < 0) | |
288 | return 0; | |
289 | ||
290 | lease->ntp_fqdn = strv_free(lease->ntp_fqdn); | |
291 | lease->ntp_fqdn = servers; | |
292 | lease->ntp_fqdn_count = r; | |
293 | ||
294 | break; | |
295 | } | |
296 | } | |
297 | ||
298 | if (r != -ENOMSG) | |
299 | return r; | |
300 | ||
301 | return 0; | |
302 | } | |
303 | ||
41e4615d PF |
304 | int dhcp6_lease_set_sntp(sd_dhcp6_lease *lease, uint8_t *optval, size_t optlen) { |
305 | int r; | |
306 | ||
307 | assert_return(lease, -EINVAL); | |
308 | assert_return(optval, -EINVAL); | |
309 | ||
310 | if (!optlen) | |
311 | return 0; | |
312 | ||
313 | if (lease->ntp || lease->ntp_fqdn) { | |
314 | log_dhcp6_client(client, "NTP information already provided"); | |
315 | ||
316 | return 0; | |
317 | } | |
318 | ||
319 | log_dhcp6_client(client, "Using deprecated SNTP information"); | |
320 | ||
321 | r = dhcp6_option_parse_ip6addrs(optval, optlen, &lease->ntp, | |
322 | lease->ntp_count, | |
323 | &lease->ntp_allocated); | |
324 | if (r < 0) { | |
325 | log_dhcp6_client(client, "Invalid SNTP server option: %s", | |
326 | strerror(-r)); | |
327 | ||
328 | return r; | |
329 | } | |
330 | ||
331 | lease->ntp_count = r; | |
332 | ||
333 | return 0; | |
334 | } | |
335 | ||
6599680e PF |
336 | int sd_dhcp6_lease_get_ntp_addrs(sd_dhcp6_lease *lease, |
337 | struct in6_addr **addrs) { | |
338 | assert_return(lease, -EINVAL); | |
339 | assert_return(addrs, -EINVAL); | |
340 | ||
341 | if (lease->ntp_count) { | |
342 | *addrs = lease->ntp; | |
343 | return lease->ntp_count; | |
344 | } | |
345 | ||
346 | return -ENOENT; | |
347 | } | |
348 | ||
349 | int sd_dhcp6_lease_get_ntp_fqdn(sd_dhcp6_lease *lease, char ***ntp_fqdn) { | |
350 | assert_return(lease, -EINVAL); | |
351 | assert_return(ntp_fqdn, -EINVAL); | |
352 | ||
353 | if (lease->ntp_fqdn_count) { | |
354 | *ntp_fqdn = lease->ntp_fqdn; | |
355 | return lease->ntp_fqdn_count; | |
356 | } | |
357 | ||
358 | return -ENOENT; | |
359 | } | |
360 | ||
3fb2c570 | 361 | sd_dhcp6_lease *sd_dhcp6_lease_ref(sd_dhcp6_lease *lease) { |
3733eec3 LP |
362 | |
363 | if (!lease) | |
364 | return NULL; | |
365 | ||
366 | assert(lease->n_ref >= 1); | |
367 | lease->n_ref++; | |
3fb2c570 PF |
368 | |
369 | return lease; | |
370 | } | |
371 | ||
372 | sd_dhcp6_lease *sd_dhcp6_lease_unref(sd_dhcp6_lease *lease) { | |
3fb2c570 | 373 | |
3733eec3 LP |
374 | if (!lease) |
375 | return NULL; | |
5da1b97f | 376 | |
3733eec3 LP |
377 | assert(lease->n_ref >= 1); |
378 | lease->n_ref--; | |
5da1b97f | 379 | |
3733eec3 LP |
380 | if (lease->n_ref > 0) |
381 | return NULL; | |
6599680e | 382 | |
3733eec3 LP |
383 | free(lease->serverid); |
384 | dhcp6_lease_free_ia(&lease->ia); | |
385 | ||
386 | free(lease->dns); | |
387 | ||
388 | lease->domains = strv_free(lease->domains); | |
389 | ||
390 | free(lease->ntp); | |
391 | ||
392 | lease->ntp_fqdn = strv_free(lease->ntp_fqdn); | |
6b430fdb | 393 | return mfree(lease); |
3fb2c570 PF |
394 | } |
395 | ||
396 | int dhcp6_lease_new(sd_dhcp6_lease **ret) { | |
397 | sd_dhcp6_lease *lease; | |
398 | ||
399 | lease = new0(sd_dhcp6_lease, 1); | |
400 | if (!lease) | |
401 | return -ENOMEM; | |
402 | ||
3733eec3 | 403 | lease->n_ref = 1; |
3fb2c570 PF |
404 | |
405 | LIST_HEAD_INIT(lease->ia.addresses); | |
406 | ||
407 | *ret = lease; | |
408 | return 0; | |
409 | } |