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5da1b97f PF |
1 | /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ |
2 | ||
3fb2c570 PF |
3 | /*** |
4 | This file is part of systemd. | |
5 | ||
6 | Copyright (C) 2014 Tom Gundersen | |
5da1b97f | 7 | Copyright (C) 2014-2015 Intel Corporation. All rights reserved. |
3fb2c570 PF |
8 | |
9 | systemd is free software; you can redistribute it and/or modify it | |
10 | under the terms of the GNU Lesser General Public License as published by | |
11 | the Free Software Foundation; either version 2.1 of the License, or | |
12 | (at your option) any later version. | |
13 | ||
14 | systemd is distributed in the hope that it will be useful, but | |
15 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
17 | Lesser General Public License for more details. | |
18 | ||
19 | You should have received a copy of the GNU Lesser General Public License | |
20 | along with systemd; If not, see <http://www.gnu.org/licenses/>. | |
21 | ***/ | |
22 | ||
23 | #include <errno.h> | |
24 | ||
5da1b97f | 25 | #include "strv.h" |
3fb2c570 PF |
26 | #include "util.h" |
27 | ||
28 | #include "dhcp6-lease-internal.h" | |
6599680e | 29 | #include "dhcp6-protocol.h" |
3fb2c570 PF |
30 | |
31 | int dhcp6_lease_clear_timers(DHCP6IA *ia) { | |
32 | assert_return(ia, -EINVAL); | |
33 | ||
34 | ia->timeout_t1 = sd_event_source_unref(ia->timeout_t1); | |
35 | ia->timeout_t2 = sd_event_source_unref(ia->timeout_t2); | |
36 | ||
37 | return 0; | |
38 | } | |
39 | ||
709d6710 PF |
40 | int dhcp6_lease_ia_rebind_expire(const DHCP6IA *ia, uint32_t *expire) { |
41 | DHCP6Address *addr; | |
42 | uint32_t valid = 0, t; | |
43 | ||
44 | assert_return(ia, -EINVAL); | |
45 | assert_return(expire, -EINVAL); | |
46 | ||
47 | LIST_FOREACH(addresses, addr, ia->addresses) { | |
ee3a5027 | 48 | t = be32toh(addr->iaaddr.lifetime_valid); |
709d6710 PF |
49 | if (valid < t) |
50 | valid = t; | |
51 | } | |
52 | ||
53 | t = be32toh(ia->lifetime_t2); | |
54 | if (t > valid) | |
55 | return -EINVAL; | |
56 | ||
57 | *expire = valid - t; | |
58 | ||
59 | return 0; | |
60 | } | |
61 | ||
3fb2c570 PF |
62 | DHCP6IA *dhcp6_lease_free_ia(DHCP6IA *ia) { |
63 | DHCP6Address *address; | |
64 | ||
65 | if (!ia) | |
66 | return NULL; | |
67 | ||
68 | dhcp6_lease_clear_timers(ia); | |
69 | ||
70 | while (ia->addresses) { | |
71 | address = ia->addresses; | |
72 | ||
73 | LIST_REMOVE(addresses, ia->addresses, address); | |
74 | ||
75 | free(address); | |
76 | } | |
77 | ||
78 | return NULL; | |
79 | } | |
80 | ||
81 | int dhcp6_lease_set_serverid(sd_dhcp6_lease *lease, const uint8_t *id, | |
82 | size_t len) { | |
83 | assert_return(lease, -EINVAL); | |
84 | assert_return(id, -EINVAL); | |
85 | ||
86 | free(lease->serverid); | |
87 | ||
88 | lease->serverid = memdup(id, len); | |
89 | if (!lease->serverid) | |
90 | return -EINVAL; | |
91 | ||
92 | lease->serverid_len = len; | |
93 | ||
94 | return 0; | |
95 | } | |
96 | ||
97 | int dhcp6_lease_get_serverid(sd_dhcp6_lease *lease, uint8_t **id, size_t *len) { | |
98 | assert_return(lease, -EINVAL); | |
99 | assert_return(id, -EINVAL); | |
100 | assert_return(len, -EINVAL); | |
101 | ||
102 | *id = lease->serverid; | |
103 | *len = lease->serverid_len; | |
104 | ||
105 | return 0; | |
106 | } | |
107 | ||
108 | int dhcp6_lease_set_preference(sd_dhcp6_lease *lease, uint8_t preference) { | |
109 | assert_return(lease, -EINVAL); | |
110 | ||
111 | lease->preference = preference; | |
112 | ||
113 | return 0; | |
114 | } | |
115 | ||
116 | int dhcp6_lease_get_preference(sd_dhcp6_lease *lease, uint8_t *preference) { | |
3fb2c570 PF |
117 | assert_return(preference, -EINVAL); |
118 | ||
fab15fec PF |
119 | if (!lease) |
120 | return -EINVAL; | |
121 | ||
3fb2c570 PF |
122 | *preference = lease->preference; |
123 | ||
124 | return 0; | |
125 | } | |
126 | ||
ed6ee219 PF |
127 | int dhcp6_lease_set_rapid_commit(sd_dhcp6_lease *lease) { |
128 | assert_return(lease, -EINVAL); | |
129 | ||
130 | lease->rapid_commit = true; | |
131 | ||
132 | return 0; | |
133 | } | |
134 | ||
135 | int dhcp6_lease_get_rapid_commit(sd_dhcp6_lease *lease, bool *rapid_commit) { | |
136 | assert_return(lease, -EINVAL); | |
137 | assert_return(rapid_commit, -EINVAL); | |
138 | ||
139 | *rapid_commit = lease->rapid_commit; | |
140 | ||
141 | return 0; | |
142 | } | |
143 | ||
3fb2c570 PF |
144 | int dhcp6_lease_get_iaid(sd_dhcp6_lease *lease, be32_t *iaid) { |
145 | assert_return(lease, -EINVAL); | |
146 | assert_return(iaid, -EINVAL); | |
147 | ||
148 | *iaid = lease->ia.id; | |
149 | ||
150 | return 0; | |
151 | } | |
152 | ||
e7504d95 PF |
153 | int sd_dhcp6_lease_get_address(sd_dhcp6_lease *lease, struct in6_addr *addr, |
154 | uint32_t *lifetime_preferred, | |
155 | uint32_t *lifetime_valid) { | |
ea3b3a75 PF |
156 | assert_return(lease, -EINVAL); |
157 | assert_return(addr, -EINVAL); | |
158 | assert_return(lifetime_preferred, -EINVAL); | |
159 | assert_return(lifetime_valid, -EINVAL); | |
160 | ||
161 | if (!lease->addr_iter) | |
162 | return -ENOMSG; | |
163 | ||
ee3a5027 PF |
164 | memcpy(addr, &lease->addr_iter->iaaddr.address, |
165 | sizeof(struct in6_addr)); | |
166 | *lifetime_preferred = | |
167 | be32toh(lease->addr_iter->iaaddr.lifetime_preferred); | |
168 | *lifetime_valid = be32toh(lease->addr_iter->iaaddr.lifetime_valid); | |
ea3b3a75 PF |
169 | |
170 | lease->addr_iter = lease->addr_iter->addresses_next; | |
171 | ||
172 | return 0; | |
173 | } | |
174 | ||
e7504d95 PF |
175 | void sd_dhcp6_lease_reset_address_iter(sd_dhcp6_lease *lease) { |
176 | if (lease) | |
177 | lease->addr_iter = lease->ia.addresses; | |
ea3b3a75 PF |
178 | } |
179 | ||
7bd8e95d PF |
180 | int dhcp6_lease_set_dns(sd_dhcp6_lease *lease, uint8_t *optval, size_t optlen) { |
181 | int r; | |
182 | ||
183 | assert_return(lease, -EINVAL); | |
184 | assert_return(optval, -EINVAL); | |
185 | ||
186 | if (!optlen) | |
187 | return 0; | |
188 | ||
189 | r = dhcp6_option_parse_ip6addrs(optval, optlen, &lease->dns, | |
190 | lease->dns_count, | |
191 | &lease->dns_allocated); | |
192 | if (r < 0) { | |
193 | log_dhcp6_client(client, "Invalid DNS server option: %s", | |
194 | strerror(-r)); | |
195 | ||
196 | return r; | |
197 | } | |
198 | ||
199 | lease->dns_count = r; | |
200 | ||
201 | return 0; | |
202 | } | |
203 | ||
204 | int sd_dhcp6_lease_get_dns(sd_dhcp6_lease *lease, struct in6_addr **addrs) { | |
205 | assert_return(lease, -EINVAL); | |
206 | assert_return(addrs, -EINVAL); | |
207 | ||
208 | if (lease->dns_count) { | |
209 | *addrs = lease->dns; | |
210 | return lease->dns_count; | |
211 | } | |
212 | ||
213 | return -ENOENT; | |
214 | } | |
215 | ||
5da1b97f PF |
216 | int dhcp6_lease_set_domains(sd_dhcp6_lease *lease, uint8_t *optval, |
217 | size_t optlen) { | |
218 | int r; | |
219 | char **domains; | |
220 | ||
221 | assert_return(lease, -EINVAL); | |
222 | assert_return(optval, -EINVAL); | |
223 | ||
224 | if (!optlen) | |
225 | return 0; | |
226 | ||
227 | r = dhcp6_option_parse_domainname(optval, optlen, &domains); | |
228 | if (r < 0) | |
229 | return 0; | |
230 | ||
231 | free(lease->domains); | |
232 | lease->domains = domains; | |
233 | lease->domains_count = r; | |
234 | ||
235 | return r; | |
236 | } | |
237 | ||
238 | int sd_dhcp6_lease_get_domains(sd_dhcp6_lease *lease, char ***domains) { | |
239 | assert_return(lease, -EINVAL); | |
240 | assert_return(domains, -EINVAL); | |
241 | ||
242 | if (lease->domains_count) { | |
243 | *domains = lease->domains; | |
244 | return lease->domains_count; | |
245 | } | |
246 | ||
247 | return -ENOENT; | |
248 | } | |
249 | ||
6599680e PF |
250 | int dhcp6_lease_set_ntp(sd_dhcp6_lease *lease, uint8_t *optval, size_t optlen) |
251 | { | |
252 | int r; | |
253 | uint16_t subopt; | |
254 | size_t sublen; | |
255 | uint8_t *subval; | |
256 | ||
257 | assert_return(lease, -EINVAL); | |
258 | assert_return(optval, -EINVAL); | |
259 | ||
41e4615d PF |
260 | free(lease->ntp); |
261 | lease->ntp_count = 0; | |
262 | lease->ntp_allocated = 0; | |
263 | ||
6599680e PF |
264 | while ((r = dhcp6_option_parse(&optval, &optlen, &subopt, &sublen, |
265 | &subval)) >= 0) { | |
266 | int s; | |
267 | char **servers; | |
268 | ||
269 | switch(subopt) { | |
270 | case DHCP6_NTP_SUBOPTION_SRV_ADDR: | |
271 | case DHCP6_NTP_SUBOPTION_MC_ADDR: | |
272 | if (sublen != 16) | |
273 | return 0; | |
274 | ||
275 | s = dhcp6_option_parse_ip6addrs(subval, sublen, | |
276 | &lease->ntp, | |
277 | lease->ntp_count, | |
278 | &lease->ntp_allocated); | |
279 | if (s < 0) | |
280 | return s; | |
281 | ||
282 | lease->ntp_count = s; | |
283 | ||
284 | break; | |
285 | ||
286 | case DHCP6_NTP_SUBOPTION_SRV_FQDN: | |
287 | r = dhcp6_option_parse_domainname(subval, sublen, | |
288 | &servers); | |
289 | if (r < 0) | |
290 | return 0; | |
291 | ||
292 | lease->ntp_fqdn = strv_free(lease->ntp_fqdn); | |
293 | lease->ntp_fqdn = servers; | |
294 | lease->ntp_fqdn_count = r; | |
295 | ||
296 | break; | |
297 | } | |
298 | } | |
299 | ||
300 | if (r != -ENOMSG) | |
301 | return r; | |
302 | ||
303 | return 0; | |
304 | } | |
305 | ||
41e4615d PF |
306 | int dhcp6_lease_set_sntp(sd_dhcp6_lease *lease, uint8_t *optval, size_t optlen) { |
307 | int r; | |
308 | ||
309 | assert_return(lease, -EINVAL); | |
310 | assert_return(optval, -EINVAL); | |
311 | ||
312 | if (!optlen) | |
313 | return 0; | |
314 | ||
315 | if (lease->ntp || lease->ntp_fqdn) { | |
316 | log_dhcp6_client(client, "NTP information already provided"); | |
317 | ||
318 | return 0; | |
319 | } | |
320 | ||
321 | log_dhcp6_client(client, "Using deprecated SNTP information"); | |
322 | ||
323 | r = dhcp6_option_parse_ip6addrs(optval, optlen, &lease->ntp, | |
324 | lease->ntp_count, | |
325 | &lease->ntp_allocated); | |
326 | if (r < 0) { | |
327 | log_dhcp6_client(client, "Invalid SNTP server option: %s", | |
328 | strerror(-r)); | |
329 | ||
330 | return r; | |
331 | } | |
332 | ||
333 | lease->ntp_count = r; | |
334 | ||
335 | return 0; | |
336 | } | |
337 | ||
6599680e PF |
338 | int sd_dhcp6_lease_get_ntp_addrs(sd_dhcp6_lease *lease, |
339 | struct in6_addr **addrs) { | |
340 | assert_return(lease, -EINVAL); | |
341 | assert_return(addrs, -EINVAL); | |
342 | ||
343 | if (lease->ntp_count) { | |
344 | *addrs = lease->ntp; | |
345 | return lease->ntp_count; | |
346 | } | |
347 | ||
348 | return -ENOENT; | |
349 | } | |
350 | ||
351 | int sd_dhcp6_lease_get_ntp_fqdn(sd_dhcp6_lease *lease, char ***ntp_fqdn) { | |
352 | assert_return(lease, -EINVAL); | |
353 | assert_return(ntp_fqdn, -EINVAL); | |
354 | ||
355 | if (lease->ntp_fqdn_count) { | |
356 | *ntp_fqdn = lease->ntp_fqdn; | |
357 | return lease->ntp_fqdn_count; | |
358 | } | |
359 | ||
360 | return -ENOENT; | |
361 | } | |
362 | ||
3fb2c570 PF |
363 | sd_dhcp6_lease *sd_dhcp6_lease_ref(sd_dhcp6_lease *lease) { |
364 | if (lease) | |
365 | assert_se(REFCNT_INC(lease->n_ref) >= 2); | |
366 | ||
367 | return lease; | |
368 | } | |
369 | ||
370 | sd_dhcp6_lease *sd_dhcp6_lease_unref(sd_dhcp6_lease *lease) { | |
f0c4b1c3 | 371 | if (lease && REFCNT_DEC(lease->n_ref) == 0) { |
3fb2c570 PF |
372 | free(lease->serverid); |
373 | dhcp6_lease_free_ia(&lease->ia); | |
374 | ||
7bd8e95d | 375 | free(lease->dns); |
5da1b97f PF |
376 | |
377 | lease->domains = strv_free(lease->domains); | |
378 | ||
6599680e PF |
379 | free(lease->ntp); |
380 | ||
381 | lease->ntp_fqdn = strv_free(lease->ntp_fqdn); | |
3fb2c570 PF |
382 | free(lease); |
383 | } | |
384 | ||
385 | return NULL; | |
386 | } | |
387 | ||
388 | int dhcp6_lease_new(sd_dhcp6_lease **ret) { | |
389 | sd_dhcp6_lease *lease; | |
390 | ||
391 | lease = new0(sd_dhcp6_lease, 1); | |
392 | if (!lease) | |
393 | return -ENOMEM; | |
394 | ||
395 | lease->n_ref = REFCNT_INIT; | |
396 | ||
397 | LIST_HEAD_INIT(lease->ia.addresses); | |
398 | ||
399 | *ret = lease; | |
400 | return 0; | |
401 | } |