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Commit | Line | Data |
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53e1b683 | 1 | /* SPDX-License-Identifier: LGPL-2.1+ */ |
a6cc569e TG |
2 | /*** |
3 | This file is part of systemd. | |
4 | ||
5 | Copyright (C) 2013 Intel Corporation. All rights reserved. | |
6 | Copyright (C) 2014 Tom Gundersen | |
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 | ||
07630cea | 22 | #include <arpa/inet.h> |
a6cc569e | 23 | #include <errno.h> |
a6cc569e | 24 | #include <stdio.h> |
0d536673 | 25 | #include <stdio_ext.h> |
07630cea LP |
26 | #include <stdlib.h> |
27 | #include <string.h> | |
28 | ||
29 | #include "sd-dhcp-lease.h" | |
a6cc569e | 30 | |
b5efdb8a | 31 | #include "alloc-util.h" |
07630cea LP |
32 | #include "dhcp-lease-internal.h" |
33 | #include "dhcp-protocol.h" | |
34 | #include "dns-domain.h" | |
3ffd4af2 | 35 | #include "fd-util.h" |
fe8db0c5 | 36 | #include "fileio.h" |
b11d6a7b | 37 | #include "hexdecoct.h" |
958b66ea | 38 | #include "hostname-util.h" |
07630cea | 39 | #include "in-addr-util.h" |
0339cd77 | 40 | #include "network-internal.h" |
6bedfcbb | 41 | #include "parse-util.h" |
d054f0a4 | 42 | #include "stdio-util.h" |
b11d6a7b | 43 | #include "string-util.h" |
07630cea | 44 | #include "unaligned.h" |
a6cc569e TG |
45 | |
46 | int sd_dhcp_lease_get_address(sd_dhcp_lease *lease, struct in_addr *addr) { | |
47 | assert_return(lease, -EINVAL); | |
48 | assert_return(addr, -EINVAL); | |
49 | ||
0339cd77 LP |
50 | if (lease->address == 0) |
51 | return -ENODATA; | |
52 | ||
a6cc569e | 53 | addr->s_addr = lease->address; |
0339cd77 LP |
54 | return 0; |
55 | } | |
a6cc569e | 56 | |
0339cd77 LP |
57 | int sd_dhcp_lease_get_broadcast(sd_dhcp_lease *lease, struct in_addr *addr) { |
58 | assert_return(lease, -EINVAL); | |
59 | assert_return(addr, -EINVAL); | |
60 | ||
61 | if (!lease->have_broadcast) | |
62 | return -ENODATA; | |
63 | ||
64 | addr->s_addr = lease->broadcast; | |
a6cc569e TG |
65 | return 0; |
66 | } | |
67 | ||
68ceb9df PF |
68 | int sd_dhcp_lease_get_lifetime(sd_dhcp_lease *lease, uint32_t *lifetime) { |
69 | assert_return(lease, -EINVAL); | |
1c6eb4e3 | 70 | assert_return(lifetime, -EINVAL); |
68ceb9df | 71 | |
0339cd77 LP |
72 | if (lease->lifetime <= 0) |
73 | return -ENODATA; | |
74 | ||
68ceb9df | 75 | *lifetime = lease->lifetime; |
0339cd77 LP |
76 | return 0; |
77 | } | |
68ceb9df | 78 | |
0339cd77 LP |
79 | int sd_dhcp_lease_get_t1(sd_dhcp_lease *lease, uint32_t *t1) { |
80 | assert_return(lease, -EINVAL); | |
81 | assert_return(t1, -EINVAL); | |
82 | ||
83 | if (lease->t1 <= 0) | |
84 | return -ENODATA; | |
85 | ||
86 | *t1 = lease->t1; | |
87 | return 0; | |
88 | } | |
89 | ||
90 | int sd_dhcp_lease_get_t2(sd_dhcp_lease *lease, uint32_t *t2) { | |
91 | assert_return(lease, -EINVAL); | |
92 | assert_return(t2, -EINVAL); | |
93 | ||
94 | if (lease->t2 <= 0) | |
95 | return -ENODATA; | |
96 | ||
97 | *t2 = lease->t2; | |
68ceb9df PF |
98 | return 0; |
99 | } | |
100 | ||
a6cc569e TG |
101 | int sd_dhcp_lease_get_mtu(sd_dhcp_lease *lease, uint16_t *mtu) { |
102 | assert_return(lease, -EINVAL); | |
103 | assert_return(mtu, -EINVAL); | |
104 | ||
0339cd77 LP |
105 | if (lease->mtu <= 0) |
106 | return -ENODATA; | |
a6cc569e | 107 | |
0339cd77 | 108 | *mtu = lease->mtu; |
a6cc569e TG |
109 | return 0; |
110 | } | |
111 | ||
a2ba62c7 | 112 | int sd_dhcp_lease_get_dns(sd_dhcp_lease *lease, const struct in_addr **addr) { |
a6cc569e TG |
113 | assert_return(lease, -EINVAL); |
114 | assert_return(addr, -EINVAL); | |
a6cc569e | 115 | |
0339cd77 LP |
116 | if (lease->dns_size <= 0) |
117 | return -ENODATA; | |
a6cc569e | 118 | |
0339cd77 LP |
119 | *addr = lease->dns; |
120 | return (int) lease->dns_size; | |
a6cc569e TG |
121 | } |
122 | ||
a2ba62c7 | 123 | int sd_dhcp_lease_get_ntp(sd_dhcp_lease *lease, const struct in_addr **addr) { |
46844696 TG |
124 | assert_return(lease, -EINVAL); |
125 | assert_return(addr, -EINVAL); | |
46844696 | 126 | |
0339cd77 LP |
127 | if (lease->ntp_size <= 0) |
128 | return -ENODATA; | |
46844696 | 129 | |
0339cd77 LP |
130 | *addr = lease->ntp; |
131 | return (int) lease->ntp_size; | |
46844696 TG |
132 | } |
133 | ||
a6cc569e TG |
134 | int sd_dhcp_lease_get_domainname(sd_dhcp_lease *lease, const char **domainname) { |
135 | assert_return(lease, -EINVAL); | |
136 | assert_return(domainname, -EINVAL); | |
137 | ||
0339cd77 LP |
138 | if (!lease->domainname) |
139 | return -ENODATA; | |
a6cc569e | 140 | |
0339cd77 | 141 | *domainname = lease->domainname; |
a6cc569e TG |
142 | return 0; |
143 | } | |
144 | ||
145 | int sd_dhcp_lease_get_hostname(sd_dhcp_lease *lease, const char **hostname) { | |
146 | assert_return(lease, -EINVAL); | |
147 | assert_return(hostname, -EINVAL); | |
148 | ||
0339cd77 LP |
149 | if (!lease->hostname) |
150 | return -ENODATA; | |
a6cc569e | 151 | |
0339cd77 | 152 | *hostname = lease->hostname; |
a6cc569e TG |
153 | return 0; |
154 | } | |
155 | ||
ce78df79 TG |
156 | int sd_dhcp_lease_get_root_path(sd_dhcp_lease *lease, const char **root_path) { |
157 | assert_return(lease, -EINVAL); | |
158 | assert_return(root_path, -EINVAL); | |
159 | ||
0339cd77 LP |
160 | if (!lease->root_path) |
161 | return -ENODATA; | |
ce78df79 | 162 | |
0339cd77 | 163 | *root_path = lease->root_path; |
ce78df79 TG |
164 | return 0; |
165 | } | |
166 | ||
a6cc569e TG |
167 | int sd_dhcp_lease_get_router(sd_dhcp_lease *lease, struct in_addr *addr) { |
168 | assert_return(lease, -EINVAL); | |
169 | assert_return(addr, -EINVAL); | |
170 | ||
0339cd77 LP |
171 | if (lease->router == 0) |
172 | return -ENODATA; | |
a6cc569e | 173 | |
0339cd77 | 174 | addr->s_addr = lease->router; |
a6cc569e TG |
175 | return 0; |
176 | } | |
177 | ||
178 | int sd_dhcp_lease_get_netmask(sd_dhcp_lease *lease, struct in_addr *addr) { | |
179 | assert_return(lease, -EINVAL); | |
180 | assert_return(addr, -EINVAL); | |
181 | ||
0339cd77 LP |
182 | if (!lease->have_subnet_mask) |
183 | return -ENODATA; | |
a6cc569e | 184 | |
0339cd77 | 185 | addr->s_addr = lease->subnet_mask; |
a6cc569e TG |
186 | return 0; |
187 | } | |
188 | ||
0ad853bc TG |
189 | int sd_dhcp_lease_get_server_identifier(sd_dhcp_lease *lease, struct in_addr *addr) { |
190 | assert_return(lease, -EINVAL); | |
191 | assert_return(addr, -EINVAL); | |
192 | ||
0339cd77 LP |
193 | if (lease->server_address == 0) |
194 | return -ENODATA; | |
0ad853bc | 195 | |
0339cd77 | 196 | addr->s_addr = lease->server_address; |
0ad853bc TG |
197 | return 0; |
198 | } | |
199 | ||
8e34a618 TG |
200 | int sd_dhcp_lease_get_next_server(sd_dhcp_lease *lease, struct in_addr *addr) { |
201 | assert_return(lease, -EINVAL); | |
202 | assert_return(addr, -EINVAL); | |
203 | ||
0339cd77 LP |
204 | if (lease->next_server == 0) |
205 | return -ENODATA; | |
8e34a618 | 206 | |
0339cd77 | 207 | addr->s_addr = lease->next_server; |
8e34a618 TG |
208 | return 0; |
209 | } | |
210 | ||
f8693fc7 BG |
211 | /* |
212 | * The returned routes array must be freed by the caller. | |
213 | * Route objects have the same lifetime of the lease and must not be freed. | |
214 | */ | |
215 | int sd_dhcp_lease_get_routes(sd_dhcp_lease *lease, sd_dhcp_route ***routes) { | |
216 | sd_dhcp_route **ret; | |
217 | unsigned i; | |
218 | ||
e1ea665e EY |
219 | assert_return(lease, -EINVAL); |
220 | assert_return(routes, -EINVAL); | |
e1ea665e | 221 | |
0339cd77 LP |
222 | if (lease->static_route_size <= 0) |
223 | return -ENODATA; | |
e1ea665e | 224 | |
f8693fc7 BG |
225 | ret = new(sd_dhcp_route *, lease->static_route_size); |
226 | if (!ret) | |
227 | return -ENOMEM; | |
228 | ||
229 | for (i = 0; i < lease->static_route_size; i++) | |
230 | ret[i] = &lease->static_route[i]; | |
231 | ||
232 | *routes = ret; | |
0339cd77 | 233 | return (int) lease->static_route_size; |
e1ea665e EY |
234 | } |
235 | ||
b85bc551 DW |
236 | int sd_dhcp_lease_get_search_domains(sd_dhcp_lease *lease, char ***domains) { |
237 | unsigned r; | |
238 | ||
239 | assert_return(lease, -EINVAL); | |
240 | assert_return(domains, -EINVAL); | |
241 | ||
242 | r = strv_length(lease->search_domains); | |
243 | if (r > 0) { | |
244 | *domains = lease->search_domains; | |
245 | return (int) r; | |
246 | } | |
247 | ||
248 | return -ENODATA; | |
249 | } | |
250 | ||
0339cd77 | 251 | int sd_dhcp_lease_get_vendor_specific(sd_dhcp_lease *lease, const void **data, size_t *data_len) { |
e43a8393 BG |
252 | assert_return(lease, -EINVAL); |
253 | assert_return(data, -EINVAL); | |
254 | assert_return(data_len, -EINVAL); | |
255 | ||
0339cd77 LP |
256 | if (lease->vendor_specific_len <= 0) |
257 | return -ENODATA; | |
e43a8393 BG |
258 | |
259 | *data = lease->vendor_specific; | |
260 | *data_len = lease->vendor_specific_len; | |
e43a8393 BG |
261 | return 0; |
262 | } | |
263 | ||
a6cc569e | 264 | sd_dhcp_lease *sd_dhcp_lease_ref(sd_dhcp_lease *lease) { |
3733eec3 LP |
265 | |
266 | if (!lease) | |
267 | return NULL; | |
268 | ||
269 | assert(lease->n_ref >= 1); | |
270 | lease->n_ref++; | |
a6cc569e TG |
271 | |
272 | return lease; | |
273 | } | |
274 | ||
275 | sd_dhcp_lease *sd_dhcp_lease_unref(sd_dhcp_lease *lease) { | |
7e753d9d | 276 | |
3733eec3 LP |
277 | if (!lease) |
278 | return NULL; | |
7e753d9d | 279 | |
3733eec3 LP |
280 | assert(lease->n_ref >= 1); |
281 | lease->n_ref--; | |
282 | ||
283 | if (lease->n_ref > 0) | |
284 | return NULL; | |
285 | ||
286 | while (lease->private_options) { | |
287 | struct sd_dhcp_raw_option *option = lease->private_options; | |
288 | ||
289 | LIST_REMOVE(options, lease->private_options, option); | |
290 | ||
291 | free(option->data); | |
292 | free(option); | |
a6cc569e TG |
293 | } |
294 | ||
3733eec3 LP |
295 | free(lease->hostname); |
296 | free(lease->domainname); | |
297 | free(lease->dns); | |
298 | free(lease->ntp); | |
299 | free(lease->static_route); | |
300 | free(lease->client_id); | |
301 | free(lease->vendor_specific); | |
b85bc551 | 302 | strv_free(lease->search_domains); |
6b430fdb | 303 | return mfree(lease); |
a6cc569e TG |
304 | } |
305 | ||
0339cd77 | 306 | static int lease_parse_u32(const uint8_t *option, size_t len, uint32_t *ret, uint32_t min) { |
e140ae58 TG |
307 | assert(option); |
308 | assert(ret); | |
309 | ||
0339cd77 LP |
310 | if (len != 4) |
311 | return -EINVAL; | |
e140ae58 | 312 | |
0339cd77 LP |
313 | *ret = unaligned_read_be32((be32_t*) option); |
314 | if (*ret < min) | |
315 | *ret = min; | |
e140ae58 | 316 | |
0339cd77 | 317 | return 0; |
e140ae58 TG |
318 | } |
319 | ||
0339cd77 | 320 | static int lease_parse_u16(const uint8_t *option, size_t len, uint16_t *ret, uint16_t min) { |
e140ae58 TG |
321 | assert(option); |
322 | assert(ret); | |
323 | ||
0339cd77 LP |
324 | if (len != 2) |
325 | return -EINVAL; | |
e140ae58 | 326 | |
0339cd77 LP |
327 | *ret = unaligned_read_be16((be16_t*) option); |
328 | if (*ret < min) | |
329 | *ret = min; | |
f5c0c00f | 330 | |
0339cd77 | 331 | return 0; |
f5c0c00f TG |
332 | } |
333 | ||
0339cd77 | 334 | static int lease_parse_be32(const uint8_t *option, size_t len, be32_t *ret) { |
f5c0c00f TG |
335 | assert(option); |
336 | assert(ret); | |
337 | ||
0339cd77 LP |
338 | if (len != 4) |
339 | return -EINVAL; | |
f5c0c00f | 340 | |
0339cd77 LP |
341 | memcpy(ret, option, 4); |
342 | return 0; | |
f5c0c00f TG |
343 | } |
344 | ||
e140ae58 TG |
345 | static int lease_parse_string(const uint8_t *option, size_t len, char **ret) { |
346 | assert(option); | |
347 | assert(ret); | |
348 | ||
0339cd77 LP |
349 | if (len <= 0) |
350 | *ret = mfree(*ret); | |
351 | else { | |
e140ae58 TG |
352 | char *string; |
353 | ||
e989fd9b LP |
354 | /* |
355 | * One trailing NUL byte is OK, we don't mind. See: | |
356 | * https://github.com/systemd/systemd/issues/1337 | |
357 | */ | |
358 | if (memchr(option, 0, len - 1)) | |
43f447b1 LP |
359 | return -EINVAL; |
360 | ||
e989fd9b | 361 | string = strndup((const char *) option, len); |
e140ae58 | 362 | if (!string) |
43f447b1 | 363 | return -ENOMEM; |
e140ae58 TG |
364 | |
365 | free(*ret); | |
366 | *ret = string; | |
0339cd77 | 367 | } |
e140ae58 TG |
368 | |
369 | return 0; | |
370 | } | |
371 | ||
978c6477 LP |
372 | static int lease_parse_domain(const uint8_t *option, size_t len, char **ret) { |
373 | _cleanup_free_ char *name = NULL, *normalized = NULL; | |
374 | int r; | |
375 | ||
376 | assert(option); | |
377 | assert(ret); | |
378 | ||
379 | r = lease_parse_string(option, len, &name); | |
380 | if (r < 0) | |
381 | return r; | |
382 | if (!name) { | |
383 | *ret = mfree(*ret); | |
384 | return 0; | |
385 | } | |
386 | ||
387 | r = dns_name_normalize(name, &normalized); | |
388 | if (r < 0) | |
389 | return r; | |
390 | ||
391 | if (is_localhost(normalized)) | |
392 | return -EINVAL; | |
393 | ||
394 | if (dns_name_is_root(normalized)) | |
395 | return -EINVAL; | |
396 | ||
f9ecfd3b | 397 | free_and_replace(*ret, normalized); |
978c6477 LP |
398 | |
399 | return 0; | |
400 | } | |
401 | ||
d9ec2e63 LP |
402 | static void filter_bogus_addresses(struct in_addr *addresses, size_t *n) { |
403 | size_t i, j; | |
404 | ||
405 | /* Silently filter DNS/NTP servers supplied to us that do not make outside of the local scope. */ | |
406 | ||
407 | for (i = 0, j = 0; i < *n; i ++) { | |
408 | ||
409 | if (in4_addr_is_null(addresses+i) || | |
410 | in4_addr_is_localhost(addresses+i)) | |
411 | continue; | |
412 | ||
413 | addresses[j++] = addresses[i]; | |
414 | } | |
415 | ||
416 | *n = j; | |
417 | } | |
418 | ||
0339cd77 | 419 | static int lease_parse_in_addrs(const uint8_t *option, size_t len, struct in_addr **ret, size_t *n_ret) { |
e140ae58 TG |
420 | assert(option); |
421 | assert(ret); | |
0339cd77 | 422 | assert(n_ret); |
e140ae58 | 423 | |
0339cd77 LP |
424 | if (len <= 0) { |
425 | *ret = mfree(*ret); | |
426 | *n_ret = 0; | |
427 | } else { | |
428 | size_t n_addresses; | |
e140ae58 TG |
429 | struct in_addr *addresses; |
430 | ||
0339cd77 LP |
431 | if (len % 4 != 0) |
432 | return -EINVAL; | |
e140ae58 | 433 | |
0339cd77 LP |
434 | n_addresses = len / 4; |
435 | ||
436 | addresses = newdup(struct in_addr, option, n_addresses); | |
e140ae58 TG |
437 | if (!addresses) |
438 | return -ENOMEM; | |
439 | ||
d9ec2e63 LP |
440 | filter_bogus_addresses(addresses, &n_addresses); |
441 | ||
e140ae58 TG |
442 | free(*ret); |
443 | *ret = addresses; | |
0339cd77 | 444 | *n_ret = n_addresses; |
e140ae58 TG |
445 | } |
446 | ||
447 | return 0; | |
448 | } | |
449 | ||
0339cd77 LP |
450 | static int lease_parse_routes( |
451 | const uint8_t *option, size_t len, | |
452 | struct sd_dhcp_route **routes, size_t *routes_size, size_t *routes_allocated) { | |
e1ea665e EY |
453 | |
454 | struct in_addr addr; | |
455 | ||
0339cd77 | 456 | assert(option || len <= 0); |
e1ea665e EY |
457 | assert(routes); |
458 | assert(routes_size); | |
459 | assert(routes_allocated); | |
460 | ||
0339cd77 | 461 | if (len <= 0) |
e1ea665e EY |
462 | return 0; |
463 | ||
464 | if (len % 8 != 0) | |
465 | return -EINVAL; | |
466 | ||
467 | if (!GREEDY_REALLOC(*routes, *routes_allocated, *routes_size + (len / 8))) | |
468 | return -ENOMEM; | |
469 | ||
470 | while (len >= 8) { | |
471 | struct sd_dhcp_route *route = *routes + *routes_size; | |
1caa12d0 | 472 | int r; |
e1ea665e | 473 | |
8cdc46e7 | 474 | route->option = SD_DHCP_OPTION_STATIC_ROUTE; |
5a941f5f | 475 | r = in4_addr_default_prefixlen((struct in_addr*) option, &route->dst_prefixlen); |
1caa12d0 | 476 | if (r < 0) { |
0339cd77 | 477 | log_debug("Failed to determine destination prefix length from class based IP, ignoring"); |
e1ea665e EY |
478 | continue; |
479 | } | |
480 | ||
0339cd77 | 481 | assert_se(lease_parse_be32(option, 4, &addr.s_addr) >= 0); |
e1ea665e EY |
482 | route->dst_addr = inet_makeaddr(inet_netof(addr), 0); |
483 | option += 4; | |
484 | ||
0339cd77 | 485 | assert_se(lease_parse_be32(option, 4, &route->gw_addr.s_addr) >= 0); |
e1ea665e EY |
486 | option += 4; |
487 | ||
488 | len -= 8; | |
489 | (*routes_size)++; | |
490 | } | |
491 | ||
492 | return 0; | |
493 | } | |
494 | ||
495 | /* parses RFC3442 Classless Static Route Option */ | |
0339cd77 LP |
496 | static int lease_parse_classless_routes( |
497 | const uint8_t *option, size_t len, | |
498 | struct sd_dhcp_route **routes, size_t *routes_size, size_t *routes_allocated) { | |
e1ea665e | 499 | |
0339cd77 | 500 | assert(option || len <= 0); |
e1ea665e EY |
501 | assert(routes); |
502 | assert(routes_size); | |
503 | assert(routes_allocated); | |
504 | ||
0339cd77 LP |
505 | if (len <= 0) |
506 | return 0; | |
507 | ||
e1ea665e EY |
508 | /* option format: (subnet-mask-width significant-subnet-octets gateway-ip)* */ |
509 | ||
510 | while (len > 0) { | |
511 | uint8_t dst_octets; | |
512 | struct sd_dhcp_route *route; | |
513 | ||
514 | if (!GREEDY_REALLOC(*routes, *routes_allocated, *routes_size + 1)) | |
0339cd77 | 515 | return -ENOMEM; |
e1ea665e EY |
516 | |
517 | route = *routes + *routes_size; | |
8cdc46e7 | 518 | route->option = SD_DHCP_OPTION_CLASSLESS_STATIC_ROUTE; |
e1ea665e EY |
519 | |
520 | dst_octets = (*option == 0 ? 0 : ((*option - 1) / 8) + 1); | |
521 | route->dst_prefixlen = *option; | |
522 | option++; | |
523 | len--; | |
524 | ||
525 | /* can't have more than 4 octets in IPv4 */ | |
526 | if (dst_octets > 4 || len < dst_octets) | |
527 | return -EINVAL; | |
528 | ||
529 | route->dst_addr.s_addr = 0; | |
530 | memcpy(&route->dst_addr.s_addr, option, dst_octets); | |
531 | option += dst_octets; | |
532 | len -= dst_octets; | |
533 | ||
534 | if (len < 4) | |
535 | return -EINVAL; | |
536 | ||
b14fff6e | 537 | assert_se(lease_parse_be32(option, 4, &route->gw_addr.s_addr) >= 0); |
e1ea665e EY |
538 | option += 4; |
539 | len -= 4; | |
540 | ||
541 | (*routes_size)++; | |
542 | } | |
543 | ||
544 | return 0; | |
545 | } | |
546 | ||
e4735228 | 547 | int dhcp_lease_parse_options(uint8_t code, uint8_t len, const void *option, void *userdata) { |
2d03c0b8 | 548 | sd_dhcp_lease *lease = userdata; |
e140ae58 TG |
549 | int r; |
550 | ||
551 | assert(lease); | |
a6cc569e TG |
552 | |
553 | switch(code) { | |
554 | ||
22805d92 | 555 | case SD_DHCP_OPTION_IP_ADDRESS_LEASE_TIME: |
0339cd77 LP |
556 | r = lease_parse_u32(option, len, &lease->lifetime, 1); |
557 | if (r < 0) | |
558 | log_debug_errno(r, "Failed to parse lease time, ignoring: %m"); | |
559 | ||
a6cc569e TG |
560 | break; |
561 | ||
22805d92 | 562 | case SD_DHCP_OPTION_SERVER_IDENTIFIER: |
0339cd77 LP |
563 | r = lease_parse_be32(option, len, &lease->server_address); |
564 | if (r < 0) | |
565 | log_debug_errno(r, "Failed to parse server identifier, ignoring: %m"); | |
566 | ||
a6cc569e TG |
567 | break; |
568 | ||
22805d92 | 569 | case SD_DHCP_OPTION_SUBNET_MASK: |
0339cd77 LP |
570 | r = lease_parse_be32(option, len, &lease->subnet_mask); |
571 | if (r < 0) | |
572 | log_debug_errno(r, "Failed to parse subnet mask, ignoring: %m"); | |
573 | else | |
574 | lease->have_subnet_mask = true; | |
a6cc569e TG |
575 | break; |
576 | ||
22805d92 | 577 | case SD_DHCP_OPTION_BROADCAST: |
0339cd77 LP |
578 | r = lease_parse_be32(option, len, &lease->broadcast); |
579 | if (r < 0) | |
580 | log_debug_errno(r, "Failed to parse broadcast address, ignoring: %m"); | |
581 | else | |
582 | lease->have_broadcast = true; | |
f5c0c00f TG |
583 | break; |
584 | ||
22805d92 | 585 | case SD_DHCP_OPTION_ROUTER: |
0339cd77 LP |
586 | if (len >= 4) { |
587 | r = lease_parse_be32(option, 4, &lease->router); | |
588 | if (r < 0) | |
589 | log_debug_errno(r, "Failed to parse router address, ignoring: %m"); | |
590 | } | |
a6cc569e TG |
591 | break; |
592 | ||
22805d92 | 593 | case SD_DHCP_OPTION_DOMAIN_NAME_SERVER: |
0339cd77 LP |
594 | r = lease_parse_in_addrs(option, len, &lease->dns, &lease->dns_size); |
595 | if (r < 0) | |
596 | log_debug_errno(r, "Failed to parse DNS server, ignoring: %m"); | |
a6cc569e TG |
597 | break; |
598 | ||
22805d92 | 599 | case SD_DHCP_OPTION_NTP_SERVER: |
0339cd77 LP |
600 | r = lease_parse_in_addrs(option, len, &lease->ntp, &lease->ntp_size); |
601 | if (r < 0) | |
602 | log_debug_errno(r, "Failed to parse NTP server, ignoring: %m"); | |
f5c0c00f TG |
603 | break; |
604 | ||
22805d92 | 605 | case SD_DHCP_OPTION_STATIC_ROUTE: |
0339cd77 LP |
606 | r = lease_parse_routes(option, len, &lease->static_route, &lease->static_route_size, &lease->static_route_allocated); |
607 | if (r < 0) | |
608 | log_debug_errno(r, "Failed to parse static routes, ignoring: %m"); | |
f5c0c00f TG |
609 | break; |
610 | ||
22805d92 | 611 | case SD_DHCP_OPTION_INTERFACE_MTU: |
0339cd77 LP |
612 | r = lease_parse_u16(option, len, &lease->mtu, 68); |
613 | if (r < 0) | |
614 | log_debug_errno(r, "Failed to parse MTU, ignoring: %m"); | |
955d99ed | 615 | if (lease->mtu < DHCP_DEFAULT_MIN_SIZE) { |
4dd53da9 | 616 | log_debug("MTU value of %" PRIu16 " too small. Using default MTU value of %d instead.", lease->mtu, DHCP_DEFAULT_MIN_SIZE); |
955d99ed MG |
617 | lease->mtu = DHCP_DEFAULT_MIN_SIZE; |
618 | } | |
619 | ||
f5c0c00f TG |
620 | break; |
621 | ||
978c6477 LP |
622 | case SD_DHCP_OPTION_DOMAIN_NAME: |
623 | r = lease_parse_domain(option, len, &lease->domainname); | |
0339cd77 LP |
624 | if (r < 0) { |
625 | log_debug_errno(r, "Failed to parse domain name, ignoring: %m"); | |
626 | return 0; | |
627 | } | |
a6cc569e | 628 | |
784d9b9c | 629 | break; |
784d9b9c | 630 | |
b85bc551 DW |
631 | case SD_DHCP_OPTION_DOMAIN_SEARCH_LIST: |
632 | r = dhcp_lease_parse_search_domains(option, len, &lease->search_domains); | |
633 | if (r < 0) | |
634 | log_debug_errno(r, "Failed to parse Domain Search List, ignoring: %m"); | |
635 | break; | |
636 | ||
978c6477 LP |
637 | case SD_DHCP_OPTION_HOST_NAME: |
638 | r = lease_parse_domain(option, len, &lease->hostname); | |
0339cd77 LP |
639 | if (r < 0) { |
640 | log_debug_errno(r, "Failed to parse host name, ignoring: %m"); | |
641 | return 0; | |
642 | } | |
a6cc569e | 643 | |
784d9b9c | 644 | break; |
ce78df79 | 645 | |
22805d92 | 646 | case SD_DHCP_OPTION_ROOT_PATH: |
0339cd77 LP |
647 | r = lease_parse_string(option, len, &lease->root_path); |
648 | if (r < 0) | |
649 | log_debug_errno(r, "Failed to parse root path, ignoring: %m"); | |
650 | break; | |
ce78df79 | 651 | |
22805d92 | 652 | case SD_DHCP_OPTION_RENEWAL_T1_TIME: |
0339cd77 LP |
653 | r = lease_parse_u32(option, len, &lease->t1, 1); |
654 | if (r < 0) | |
655 | log_debug_errno(r, "Failed to parse T1 time, ignoring: %m"); | |
a6cc569e TG |
656 | break; |
657 | ||
22805d92 | 658 | case SD_DHCP_OPTION_REBINDING_T2_TIME: |
0339cd77 LP |
659 | r = lease_parse_u32(option, len, &lease->t2, 1); |
660 | if (r < 0) | |
661 | log_debug_errno(r, "Failed to parse T2 time, ignoring: %m"); | |
a6cc569e | 662 | break; |
e1ea665e | 663 | |
22805d92 | 664 | case SD_DHCP_OPTION_CLASSLESS_STATIC_ROUTE: |
0339cd77 | 665 | r = lease_parse_classless_routes( |
2d03c0b8 LP |
666 | option, len, |
667 | &lease->static_route, | |
668 | &lease->static_route_size, | |
669 | &lease->static_route_allocated); | |
0339cd77 LP |
670 | if (r < 0) |
671 | log_debug_errno(r, "Failed to parse classless routes, ignoring: %m"); | |
672 | break; | |
e43a8393 | 673 | |
22805d92 | 674 | case SD_DHCP_OPTION_NEW_TZDB_TIMEZONE: { |
8eb9058d LP |
675 | _cleanup_free_ char *tz = NULL; |
676 | ||
677 | r = lease_parse_string(option, len, &tz); | |
0339cd77 LP |
678 | if (r < 0) { |
679 | log_debug_errno(r, "Failed to parse timezone option, ignoring: %m"); | |
680 | return 0; | |
681 | } | |
8eb9058d | 682 | |
0339cd77 LP |
683 | if (!timezone_is_valid(tz)) { |
684 | log_debug_errno(r, "Timezone is not valid, ignoring: %m"); | |
685 | return 0; | |
686 | } | |
8eb9058d | 687 | |
f9ecfd3b | 688 | free_and_replace(lease->timezone, tz); |
0339cd77 | 689 | |
8eb9058d LP |
690 | break; |
691 | } | |
692 | ||
22805d92 | 693 | case SD_DHCP_OPTION_VENDOR_SPECIFIC: |
2d03c0b8 | 694 | |
0339cd77 LP |
695 | if (len <= 0) |
696 | lease->vendor_specific = mfree(lease->vendor_specific); | |
697 | else { | |
698 | void *p; | |
699 | ||
700 | p = memdup(option, len); | |
701 | if (!p) | |
e43a8393 | 702 | return -ENOMEM; |
e43a8393 | 703 | |
0339cd77 LP |
704 | free(lease->vendor_specific); |
705 | lease->vendor_specific = p; | |
706 | } | |
7e753d9d | 707 | |
0339cd77 LP |
708 | lease->vendor_specific_len = len; |
709 | break; | |
7e753d9d | 710 | |
22805d92 | 711 | case SD_DHCP_OPTION_PRIVATE_BASE ... SD_DHCP_OPTION_PRIVATE_LAST: |
7e753d9d AC |
712 | r = dhcp_lease_insert_private_option(lease, code, option, len); |
713 | if (r < 0) | |
714 | return r; | |
0339cd77 LP |
715 | |
716 | break; | |
717 | ||
718 | default: | |
f693e9b3 | 719 | log_debug("Ignoring option DHCP option %"PRIu8" while parsing.", code); |
0339cd77 | 720 | break; |
a6cc569e TG |
721 | } |
722 | ||
723 | return 0; | |
724 | } | |
725 | ||
b85bc551 DW |
726 | /* Parses compressed domain names. */ |
727 | int dhcp_lease_parse_search_domains(const uint8_t *option, size_t len, char ***domains) { | |
728 | _cleanup_strv_free_ char **names = NULL; | |
729 | size_t pos = 0, cnt = 0; | |
730 | int r; | |
731 | ||
732 | assert(domains); | |
733 | assert_return(option && len > 0, -ENODATA); | |
734 | ||
735 | while (pos < len) { | |
736 | _cleanup_free_ char *name = NULL; | |
737 | size_t n = 0, allocated = 0; | |
738 | size_t jump_barrier = pos, next_chunk = 0; | |
739 | bool first = true; | |
740 | ||
741 | for (;;) { | |
742 | uint8_t c; | |
743 | c = option[pos++]; | |
744 | ||
745 | if (c == 0) { | |
746 | /* End of name */ | |
747 | break; | |
748 | } else if (c <= 63) { | |
749 | const char *label; | |
750 | ||
751 | /* Literal label */ | |
752 | label = (const char*) (option + pos); | |
753 | pos += c; | |
754 | if (pos >= len) | |
755 | return -EBADMSG; | |
756 | ||
757 | if (!GREEDY_REALLOC(name, allocated, n + !first + DNS_LABEL_ESCAPED_MAX)) | |
758 | return -ENOMEM; | |
759 | ||
760 | if (first) | |
761 | first = false; | |
762 | else | |
763 | name[n++] = '.'; | |
764 | ||
765 | r = dns_label_escape(label, c, name + n, DNS_LABEL_ESCAPED_MAX); | |
766 | if (r < 0) | |
767 | return r; | |
768 | ||
769 | n += r; | |
770 | } else if ((c & 0xc0) == 0xc0) { | |
771 | /* Pointer */ | |
772 | ||
773 | uint8_t d; | |
774 | uint16_t ptr; | |
775 | ||
776 | if (pos >= len) | |
777 | return -EBADMSG; | |
778 | ||
779 | d = option[pos++]; | |
780 | ptr = (uint16_t) (c & ~0xc0) << 8 | (uint16_t) d; | |
781 | ||
782 | /* Jumps are limited to a "prior occurrence" (RFC-1035 4.1.4) */ | |
783 | if (ptr >= jump_barrier) | |
784 | return -EBADMSG; | |
785 | jump_barrier = ptr; | |
786 | ||
787 | /* Save current location so we don't end up re-parsing what's parsed so far. */ | |
788 | if (next_chunk == 0) | |
789 | next_chunk = pos; | |
790 | ||
791 | pos = ptr; | |
792 | } else | |
793 | return -EBADMSG; | |
794 | } | |
795 | ||
796 | if (!GREEDY_REALLOC(name, allocated, n + 1)) | |
797 | return -ENOMEM; | |
798 | name[n] = 0; | |
799 | ||
800 | r = strv_extend(&names, name); | |
801 | if (r < 0) | |
802 | return r; | |
803 | ||
804 | cnt++; | |
805 | ||
806 | if (next_chunk != 0) | |
807 | pos = next_chunk; | |
808 | } | |
809 | ||
ae2a15bc | 810 | *domains = TAKE_PTR(names); |
b85bc551 DW |
811 | |
812 | return cnt; | |
813 | } | |
814 | ||
0339cd77 | 815 | int dhcp_lease_insert_private_option(sd_dhcp_lease *lease, uint8_t tag, const void *data, uint8_t len) { |
7e753d9d AC |
816 | struct sd_dhcp_raw_option *cur, *option; |
817 | ||
0339cd77 LP |
818 | assert(lease); |
819 | ||
7e753d9d AC |
820 | LIST_FOREACH(options, cur, lease->private_options) { |
821 | if (tag < cur->tag) | |
822 | break; | |
0339cd77 LP |
823 | if (tag == cur->tag) { |
824 | log_debug("Ignoring duplicate option, tagged %i.", tag); | |
7e753d9d AC |
825 | return 0; |
826 | } | |
827 | } | |
828 | ||
829 | option = new(struct sd_dhcp_raw_option, 1); | |
830 | if (!option) | |
831 | return -ENOMEM; | |
832 | ||
833 | option->tag = tag; | |
834 | option->length = len; | |
835 | option->data = memdup(data, len); | |
836 | if (!option->data) { | |
837 | free(option); | |
838 | return -ENOMEM; | |
839 | } | |
840 | ||
841 | LIST_INSERT_BEFORE(options, lease->private_options, cur, option); | |
7e753d9d AC |
842 | return 0; |
843 | } | |
844 | ||
a6cc569e | 845 | int dhcp_lease_new(sd_dhcp_lease **ret) { |
6e00a806 | 846 | sd_dhcp_lease *lease; |
a6cc569e TG |
847 | |
848 | lease = new0(sd_dhcp_lease, 1); | |
849 | if (!lease) | |
850 | return -ENOMEM; | |
851 | ||
8ddbeaa2 | 852 | lease->router = INADDR_ANY; |
3733eec3 | 853 | lease->n_ref = 1; |
a6cc569e TG |
854 | |
855 | *ret = lease; | |
a6cc569e TG |
856 | return 0; |
857 | } | |
fe8db0c5 | 858 | |
bd91b83e | 859 | int dhcp_lease_save(sd_dhcp_lease *lease, const char *lease_file) { |
fe8db0c5 TG |
860 | _cleanup_free_ char *temp_path = NULL; |
861 | _cleanup_fclose_ FILE *f = NULL; | |
a073309f | 862 | struct sd_dhcp_raw_option *option; |
fe8db0c5 | 863 | struct in_addr address; |
a2ba62c7 | 864 | const struct in_addr *addresses; |
e4735228 | 865 | const void *client_id, *data; |
e43a8393 | 866 | size_t client_id_len, data_len; |
fe8db0c5 TG |
867 | const char *string; |
868 | uint16_t mtu; | |
f8693fc7 | 869 | _cleanup_free_ sd_dhcp_route **routes = NULL; |
b85bc551 | 870 | char **search_domains = NULL; |
0339cd77 | 871 | uint32_t t1, t2, lifetime; |
fe8db0c5 TG |
872 | int r; |
873 | ||
874 | assert(lease); | |
875 | assert(lease_file); | |
876 | ||
fe8db0c5 TG |
877 | r = fopen_temporary(lease_file, &f, &temp_path); |
878 | if (r < 0) | |
dacd6cee | 879 | goto fail; |
fe8db0c5 | 880 | |
0d536673 LP |
881 | (void) __fsetlocking(f, FSETLOCKING_BYCALLER); |
882 | (void) fchmod(fileno(f), 0644); | |
fe8db0c5 | 883 | |
fe8db0c5 | 884 | fprintf(f, |
0339cd77 | 885 | "# This is private data. Do not parse.\n"); |
fe8db0c5 | 886 | |
0339cd77 LP |
887 | r = sd_dhcp_lease_get_address(lease, &address); |
888 | if (r >= 0) | |
889 | fprintf(f, "ADDRESS=%s\n", inet_ntoa(address)); | |
fe8db0c5 | 890 | |
0339cd77 LP |
891 | r = sd_dhcp_lease_get_netmask(lease, &address); |
892 | if (r >= 0) | |
893 | fprintf(f, "NETMASK=%s\n", inet_ntoa(address)); | |
fe8db0c5 | 894 | |
8ddbeaa2 UTL |
895 | r = sd_dhcp_lease_get_router(lease, &address); |
896 | if (r >= 0) | |
897 | fprintf(f, "ROUTER=%s\n", inet_ntoa(address)); | |
898 | ||
0ad853bc | 899 | r = sd_dhcp_lease_get_server_identifier(lease, &address); |
109731eb | 900 | if (r >= 0) |
0339cd77 | 901 | fprintf(f, "SERVER_ADDRESS=%s\n", inet_ntoa(address)); |
0ad853bc | 902 | |
8e34a618 | 903 | r = sd_dhcp_lease_get_next_server(lease, &address); |
109731eb TG |
904 | if (r >= 0) |
905 | fprintf(f, "NEXT_SERVER=%s\n", inet_ntoa(address)); | |
8e34a618 | 906 | |
0339cd77 LP |
907 | r = sd_dhcp_lease_get_broadcast(lease, &address); |
908 | if (r >= 0) | |
909 | fprintf(f, "BROADCAST=%s\n", inet_ntoa(address)); | |
910 | ||
fe8db0c5 TG |
911 | r = sd_dhcp_lease_get_mtu(lease, &mtu); |
912 | if (r >= 0) | |
913 | fprintf(f, "MTU=%" PRIu16 "\n", mtu); | |
914 | ||
0339cd77 LP |
915 | r = sd_dhcp_lease_get_t1(lease, &t1); |
916 | if (r >= 0) | |
917 | fprintf(f, "T1=%" PRIu32 "\n", t1); | |
918 | ||
919 | r = sd_dhcp_lease_get_t2(lease, &t2); | |
109731eb | 920 | if (r >= 0) |
0339cd77 LP |
921 | fprintf(f, "T2=%" PRIu32 "\n", t2); |
922 | ||
923 | r = sd_dhcp_lease_get_lifetime(lease, &lifetime); | |
924 | if (r >= 0) | |
925 | fprintf(f, "LIFETIME=%" PRIu32 "\n", lifetime); | |
926 | ||
927 | r = sd_dhcp_lease_get_dns(lease, &addresses); | |
928 | if (r > 0) { | |
0d536673 | 929 | fputs("DNS=", f); |
b0e39c82 | 930 | serialize_in_addrs(f, addresses, r); |
0d536673 | 931 | fputs("\n", f); |
0339cd77 | 932 | } |
109731eb | 933 | |
a2ba62c7 | 934 | r = sd_dhcp_lease_get_ntp(lease, &addresses); |
0339cd77 | 935 | if (r > 0) { |
0d536673 | 936 | fputs("NTP=", f); |
b0e39c82 | 937 | serialize_in_addrs(f, addresses, r); |
0d536673 | 938 | fputs("\n", f); |
0339cd77 | 939 | } |
fe8db0c5 TG |
940 | |
941 | r = sd_dhcp_lease_get_domainname(lease, &string); | |
942 | if (r >= 0) | |
943 | fprintf(f, "DOMAINNAME=%s\n", string); | |
944 | ||
b85bc551 DW |
945 | r = sd_dhcp_lease_get_search_domains(lease, &search_domains); |
946 | if (r > 0) { | |
0d536673 | 947 | fputs("DOMAIN_SEARCH_LIST=", f); |
b85bc551 | 948 | fputstrv(f, search_domains, NULL, NULL); |
0d536673 | 949 | fputs("\n", f); |
b85bc551 DW |
950 | } |
951 | ||
fe8db0c5 TG |
952 | r = sd_dhcp_lease_get_hostname(lease, &string); |
953 | if (r >= 0) | |
954 | fprintf(f, "HOSTNAME=%s\n", string); | |
955 | ||
ce78df79 TG |
956 | r = sd_dhcp_lease_get_root_path(lease, &string); |
957 | if (r >= 0) | |
958 | fprintf(f, "ROOT_PATH=%s\n", string); | |
959 | ||
a2ba62c7 | 960 | r = sd_dhcp_lease_get_routes(lease, &routes); |
0339cd77 | 961 | if (r > 0) |
a2ba62c7 | 962 | serialize_dhcp_routes(f, "ROUTES", routes, r); |
e1ea665e | 963 | |
8eb9058d LP |
964 | r = sd_dhcp_lease_get_timezone(lease, &string); |
965 | if (r >= 0) | |
966 | fprintf(f, "TIMEZONE=%s\n", string); | |
967 | ||
e37f74a6 DW |
968 | r = sd_dhcp_lease_get_client_id(lease, &client_id, &client_id_len); |
969 | if (r >= 0) { | |
3587161a | 970 | _cleanup_free_ char *client_id_hex = NULL; |
e37f74a6 | 971 | |
dde8bb32 | 972 | client_id_hex = hexmem(client_id, client_id_len); |
e37f74a6 DW |
973 | if (!client_id_hex) { |
974 | r = -ENOMEM; | |
dacd6cee | 975 | goto fail; |
e37f74a6 DW |
976 | } |
977 | fprintf(f, "CLIENTID=%s\n", client_id_hex); | |
978 | } | |
979 | ||
e43a8393 BG |
980 | r = sd_dhcp_lease_get_vendor_specific(lease, &data, &data_len); |
981 | if (r >= 0) { | |
982 | _cleanup_free_ char *option_hex = NULL; | |
983 | ||
984 | option_hex = hexmem(data, data_len); | |
985 | if (!option_hex) { | |
986 | r = -ENOMEM; | |
dacd6cee | 987 | goto fail; |
e43a8393 BG |
988 | } |
989 | fprintf(f, "VENDOR_SPECIFIC=%s\n", option_hex); | |
990 | } | |
991 | ||
a073309f | 992 | LIST_FOREACH(options, option, lease->private_options) { |
dbcb4a90 | 993 | char key[STRLEN("OPTION_000")+1]; |
0339cd77 | 994 | |
d054f0a4 | 995 | xsprintf(key, "OPTION_%" PRIu8, option->tag); |
a073309f AC |
996 | r = serialize_dhcp_option(f, key, option->data, option->length); |
997 | if (r < 0) | |
998 | goto fail; | |
999 | } | |
1000 | ||
dacd6cee LP |
1001 | r = fflush_and_check(f); |
1002 | if (r < 0) | |
1003 | goto fail; | |
fe8db0c5 | 1004 | |
dacd6cee | 1005 | if (rename(temp_path, lease_file) < 0) { |
fe8db0c5 | 1006 | r = -errno; |
dacd6cee | 1007 | goto fail; |
fe8db0c5 TG |
1008 | } |
1009 | ||
dacd6cee LP |
1010 | return 0; |
1011 | ||
1012 | fail: | |
1013 | if (temp_path) | |
1014 | (void) unlink(temp_path); | |
fe8db0c5 | 1015 | |
dacd6cee | 1016 | return log_error_errno(r, "Failed to save lease data %s: %m", lease_file); |
fe8db0c5 TG |
1017 | } |
1018 | ||
bd91b83e | 1019 | int dhcp_lease_load(sd_dhcp_lease **ret, const char *lease_file) { |
0339cd77 | 1020 | |
4afd3348 | 1021 | _cleanup_(sd_dhcp_lease_unrefp) sd_dhcp_lease *lease = NULL; |
0339cd77 LP |
1022 | _cleanup_free_ char |
1023 | *address = NULL, | |
1024 | *router = NULL, | |
1025 | *netmask = NULL, | |
1026 | *server_address = NULL, | |
1027 | *next_server = NULL, | |
1028 | *broadcast = NULL, | |
1029 | *dns = NULL, | |
1030 | *ntp = NULL, | |
1031 | *mtu = NULL, | |
1032 | *routes = NULL, | |
b85bc551 | 1033 | *domains = NULL, |
0339cd77 LP |
1034 | *client_id_hex = NULL, |
1035 | *vendor_specific_hex = NULL, | |
1036 | *lifetime = NULL, | |
1037 | *t1 = NULL, | |
1038 | *t2 = NULL, | |
22805d92 | 1039 | *options[SD_DHCP_OPTION_PRIVATE_LAST - SD_DHCP_OPTION_PRIVATE_BASE + 1] = {}; |
0339cd77 | 1040 | |
a073309f | 1041 | int r, i; |
fe8db0c5 TG |
1042 | |
1043 | assert(lease_file); | |
1044 | assert(ret); | |
1045 | ||
1046 | r = dhcp_lease_new(&lease); | |
1047 | if (r < 0) | |
1048 | return r; | |
1049 | ||
1050 | r = parse_env_file(lease_file, NEWLINE, | |
1051 | "ADDRESS", &address, | |
1052 | "ROUTER", &router, | |
1053 | "NETMASK", &netmask, | |
0ad853bc | 1054 | "SERVER_IDENTIFIER", &server_address, |
8e34a618 | 1055 | "NEXT_SERVER", &next_server, |
0339cd77 | 1056 | "BROADCAST", &broadcast, |
109731eb TG |
1057 | "DNS", &dns, |
1058 | "NTP", &ntp, | |
fe8db0c5 TG |
1059 | "MTU", &mtu, |
1060 | "DOMAINNAME", &lease->domainname, | |
1061 | "HOSTNAME", &lease->hostname, | |
b85bc551 | 1062 | "DOMAIN_SEARCH_LIST", &domains, |
ce78df79 | 1063 | "ROOT_PATH", &lease->root_path, |
e1ea665e | 1064 | "ROUTES", &routes, |
e37f74a6 | 1065 | "CLIENTID", &client_id_hex, |
8eb9058d | 1066 | "TIMEZONE", &lease->timezone, |
e43a8393 | 1067 | "VENDOR_SPECIFIC", &vendor_specific_hex, |
0339cd77 LP |
1068 | "LIFETIME", &lifetime, |
1069 | "T1", &t1, | |
1070 | "T2", &t2, | |
a073309f AC |
1071 | "OPTION_224", &options[0], |
1072 | "OPTION_225", &options[1], | |
1073 | "OPTION_226", &options[2], | |
1074 | "OPTION_227", &options[3], | |
1075 | "OPTION_228", &options[4], | |
1076 | "OPTION_229", &options[5], | |
1077 | "OPTION_230", &options[6], | |
1078 | "OPTION_231", &options[7], | |
1079 | "OPTION_232", &options[8], | |
1080 | "OPTION_233", &options[9], | |
1081 | "OPTION_234", &options[10], | |
1082 | "OPTION_235", &options[11], | |
1083 | "OPTION_236", &options[12], | |
1084 | "OPTION_237", &options[13], | |
1085 | "OPTION_238", &options[14], | |
1086 | "OPTION_239", &options[15], | |
1087 | "OPTION_240", &options[16], | |
1088 | "OPTION_241", &options[17], | |
1089 | "OPTION_242", &options[18], | |
1090 | "OPTION_243", &options[19], | |
1091 | "OPTION_244", &options[20], | |
1092 | "OPTION_245", &options[21], | |
1093 | "OPTION_246", &options[22], | |
1094 | "OPTION_247", &options[23], | |
1095 | "OPTION_248", &options[24], | |
1096 | "OPTION_249", &options[25], | |
1097 | "OPTION_250", &options[26], | |
1098 | "OPTION_251", &options[27], | |
1099 | "OPTION_252", &options[28], | |
1100 | "OPTION_253", &options[29], | |
1101 | "OPTION_254", &options[30], | |
fe8db0c5 | 1102 | NULL); |
fe8db0c5 TG |
1103 | if (r < 0) |
1104 | return r; | |
1105 | ||
0339cd77 LP |
1106 | if (address) { |
1107 | r = inet_pton(AF_INET, address, &lease->address); | |
1108 | if (r <= 0) | |
e26ea7fc | 1109 | log_debug("Failed to parse address %s, ignoring.", address); |
0339cd77 | 1110 | } |
fe8db0c5 | 1111 | |
8ddbeaa2 | 1112 | if (router) { |
0339cd77 LP |
1113 | r = inet_pton(AF_INET, router, &lease->router); |
1114 | if (r <= 0) | |
e26ea7fc | 1115 | log_debug("Failed to parse router %s, ignoring.", router); |
8ddbeaa2 | 1116 | } |
fe8db0c5 | 1117 | |
0339cd77 LP |
1118 | if (netmask) { |
1119 | r = inet_pton(AF_INET, netmask, &lease->subnet_mask); | |
1120 | if (r <= 0) | |
e26ea7fc | 1121 | log_debug("Failed to parse netmask %s, ignoring.", netmask); |
0339cd77 LP |
1122 | else |
1123 | lease->have_subnet_mask = true; | |
1124 | } | |
fe8db0c5 | 1125 | |
0ad853bc | 1126 | if (server_address) { |
0339cd77 LP |
1127 | r = inet_pton(AF_INET, server_address, &lease->server_address); |
1128 | if (r <= 0) | |
e26ea7fc | 1129 | log_debug("Failed to parse server address %s, ignoring.", server_address); |
0ad853bc TG |
1130 | } |
1131 | ||
8e34a618 | 1132 | if (next_server) { |
0339cd77 LP |
1133 | r = inet_pton(AF_INET, next_server, &lease->next_server); |
1134 | if (r <= 0) | |
e26ea7fc | 1135 | log_debug("Failed to parse next server %s, ignoring.", next_server); |
0339cd77 | 1136 | } |
8e34a618 | 1137 | |
0339cd77 LP |
1138 | if (broadcast) { |
1139 | r = inet_pton(AF_INET, broadcast, &lease->broadcast); | |
1140 | if (r <= 0) | |
e26ea7fc | 1141 | log_debug("Failed to parse broadcast address %s, ignoring.", broadcast); |
0339cd77 LP |
1142 | else |
1143 | lease->have_broadcast = true; | |
8e34a618 TG |
1144 | } |
1145 | ||
109731eb | 1146 | if (dns) { |
a2ba62c7 | 1147 | r = deserialize_in_addrs(&lease->dns, dns); |
109731eb | 1148 | if (r < 0) |
0339cd77 LP |
1149 | log_debug_errno(r, "Failed to deserialize DNS servers %s, ignoring: %m", dns); |
1150 | else | |
1151 | lease->dns_size = r; | |
109731eb TG |
1152 | } |
1153 | ||
1154 | if (ntp) { | |
a2ba62c7 | 1155 | r = deserialize_in_addrs(&lease->ntp, ntp); |
109731eb | 1156 | if (r < 0) |
0339cd77 LP |
1157 | log_debug_errno(r, "Failed to deserialize NTP servers %s, ignoring: %m", ntp); |
1158 | else | |
1159 | lease->ntp_size = r; | |
109731eb TG |
1160 | } |
1161 | ||
fe8db0c5 | 1162 | if (mtu) { |
0339cd77 LP |
1163 | r = safe_atou16(mtu, &lease->mtu); |
1164 | if (r < 0) | |
1165 | log_debug_errno(r, "Failed to parse MTU %s, ignoring: %m", mtu); | |
fe8db0c5 TG |
1166 | } |
1167 | ||
b85bc551 DW |
1168 | if (domains) { |
1169 | _cleanup_strv_free_ char **a = NULL; | |
1170 | a = strv_split(domains, " "); | |
1171 | if (!a) | |
1172 | return -ENOMEM; | |
1173 | ||
1174 | if (!strv_isempty(a)) { | |
1175 | lease->search_domains = a; | |
1176 | a = NULL; | |
1177 | } | |
1178 | } | |
1179 | ||
e1ea665e | 1180 | if (routes) { |
0339cd77 LP |
1181 | r = deserialize_dhcp_routes( |
1182 | &lease->static_route, | |
1183 | &lease->static_route_size, | |
1184 | &lease->static_route_allocated, | |
1185 | routes); | |
1186 | if (r < 0) | |
1187 | log_debug_errno(r, "Failed to parse DHCP routes %s, ignoring: %m", routes); | |
1188 | } | |
1189 | ||
1190 | if (lifetime) { | |
1191 | r = safe_atou32(lifetime, &lease->lifetime); | |
1192 | if (r < 0) | |
1193 | log_debug_errno(r, "Failed to parse lifetime %s, ignoring: %m", lifetime); | |
1194 | } | |
1195 | ||
1196 | if (t1) { | |
1197 | r = safe_atou32(t1, &lease->t1); | |
1198 | if (r < 0) | |
1199 | log_debug_errno(r, "Failed to parse T1 %s, ignoring: %m", t1); | |
1200 | } | |
1201 | ||
1202 | if (t2) { | |
1203 | r = safe_atou32(t2, &lease->t2); | |
e1ea665e | 1204 | if (r < 0) |
0339cd77 | 1205 | log_debug_errno(r, "Failed to parse T2 %s, ignoring: %m", t2); |
e1ea665e EY |
1206 | } |
1207 | ||
e37f74a6 | 1208 | if (client_id_hex) { |
9b57d9ae | 1209 | r = deserialize_dhcp_option(&lease->client_id, &lease->client_id_len, client_id_hex); |
30494563 | 1210 | if (r < 0) |
0339cd77 | 1211 | log_debug_errno(r, "Failed to parse client ID %s, ignoring: %m", client_id_hex); |
e37f74a6 DW |
1212 | } |
1213 | ||
e43a8393 | 1214 | if (vendor_specific_hex) { |
9b57d9ae | 1215 | r = deserialize_dhcp_option(&lease->vendor_specific, &lease->vendor_specific_len, vendor_specific_hex); |
e43a8393 | 1216 | if (r < 0) |
0339cd77 | 1217 | log_debug_errno(r, "Failed to parse vendor specific data %s, ignoring: %m", vendor_specific_hex); |
e43a8393 BG |
1218 | } |
1219 | ||
22805d92 | 1220 | for (i = 0; i <= SD_DHCP_OPTION_PRIVATE_LAST - SD_DHCP_OPTION_PRIVATE_BASE; i++) { |
e4735228 | 1221 | _cleanup_free_ void *data = NULL; |
a073309f AC |
1222 | size_t len; |
1223 | ||
1224 | if (!options[i]) | |
1225 | continue; | |
1226 | ||
1227 | r = deserialize_dhcp_option(&data, &len, options[i]); | |
0339cd77 LP |
1228 | if (r < 0) { |
1229 | log_debug_errno(r, "Failed to parse private DHCP option %s, ignoring: %m", options[i]); | |
1230 | continue; | |
1231 | } | |
a073309f | 1232 | |
22805d92 | 1233 | r = dhcp_lease_insert_private_option(lease, SD_DHCP_OPTION_PRIVATE_BASE + i, data, len); |
626be147 | 1234 | if (r < 0) |
a073309f AC |
1235 | return r; |
1236 | } | |
1237 | ||
fe8db0c5 TG |
1238 | *ret = lease; |
1239 | lease = NULL; | |
1240 | ||
1241 | return 0; | |
1242 | } | |
9e64dd72 TG |
1243 | |
1244 | int dhcp_lease_set_default_subnet_mask(sd_dhcp_lease *lease) { | |
0339cd77 | 1245 | struct in_addr address, mask; |
df40eee8 | 1246 | int r; |
9e64dd72 TG |
1247 | |
1248 | assert(lease); | |
9e64dd72 | 1249 | |
0339cd77 LP |
1250 | if (lease->address == 0) |
1251 | return -ENODATA; | |
1252 | ||
df40eee8 | 1253 | address.s_addr = lease->address; |
9e64dd72 TG |
1254 | |
1255 | /* fall back to the default subnet masks based on address class */ | |
5a941f5f | 1256 | r = in4_addr_default_subnet_mask(&address, &mask); |
df40eee8 TG |
1257 | if (r < 0) |
1258 | return r; | |
9e64dd72 | 1259 | |
df40eee8 | 1260 | lease->subnet_mask = mask.s_addr; |
0339cd77 | 1261 | lease->have_subnet_mask = true; |
9e64dd72 TG |
1262 | |
1263 | return 0; | |
1264 | } | |
e37f74a6 | 1265 | |
0339cd77 | 1266 | int sd_dhcp_lease_get_client_id(sd_dhcp_lease *lease, const void **client_id, size_t *client_id_len) { |
e37f74a6 DW |
1267 | assert_return(lease, -EINVAL); |
1268 | assert_return(client_id, -EINVAL); | |
1269 | assert_return(client_id_len, -EINVAL); | |
1270 | ||
0339cd77 LP |
1271 | if (!lease->client_id) |
1272 | return -ENODATA; | |
1273 | ||
e37f74a6 DW |
1274 | *client_id = lease->client_id; |
1275 | *client_id_len = lease->client_id_len; | |
0339cd77 | 1276 | |
e37f74a6 DW |
1277 | return 0; |
1278 | } | |
1279 | ||
0339cd77 | 1280 | int dhcp_lease_set_client_id(sd_dhcp_lease *lease, const void *client_id, size_t client_id_len) { |
e37f74a6 | 1281 | assert_return(lease, -EINVAL); |
0339cd77 LP |
1282 | assert_return(client_id || client_id_len <= 0, -EINVAL); |
1283 | ||
1284 | if (client_id_len <= 0) | |
1285 | lease->client_id = mfree(lease->client_id); | |
1286 | else { | |
1287 | void *p; | |
e37f74a6 | 1288 | |
0339cd77 LP |
1289 | p = memdup(client_id, client_id_len); |
1290 | if (!p) | |
1291 | return -ENOMEM; | |
e37f74a6 | 1292 | |
0339cd77 LP |
1293 | free(lease->client_id); |
1294 | lease->client_id = p; | |
e37f74a6 DW |
1295 | lease->client_id_len = client_id_len; |
1296 | } | |
1297 | ||
1298 | return 0; | |
1299 | } | |
8eb9058d | 1300 | |
64d6c229 | 1301 | int sd_dhcp_lease_get_timezone(sd_dhcp_lease *lease, const char **tz) { |
8eb9058d | 1302 | assert_return(lease, -EINVAL); |
64d6c229 | 1303 | assert_return(tz, -EINVAL); |
8eb9058d LP |
1304 | |
1305 | if (!lease->timezone) | |
0339cd77 | 1306 | return -ENODATA; |
8eb9058d | 1307 | |
64d6c229 | 1308 | *tz = lease->timezone; |
8eb9058d LP |
1309 | return 0; |
1310 | } | |
f8693fc7 BG |
1311 | |
1312 | int sd_dhcp_route_get_destination(sd_dhcp_route *route, struct in_addr *destination) { | |
1313 | assert_return(route, -EINVAL); | |
1314 | assert_return(destination, -EINVAL); | |
1315 | ||
1316 | *destination = route->dst_addr; | |
1317 | return 0; | |
1318 | } | |
1319 | ||
1320 | int sd_dhcp_route_get_destination_prefix_length(sd_dhcp_route *route, uint8_t *length) { | |
1321 | assert_return(route, -EINVAL); | |
1322 | assert_return(length, -EINVAL); | |
1323 | ||
1324 | *length = route->dst_prefixlen; | |
1325 | return 0; | |
1326 | } | |
1327 | ||
1328 | int sd_dhcp_route_get_gateway(sd_dhcp_route *route, struct in_addr *gateway) { | |
1329 | assert_return(route, -EINVAL); | |
1330 | assert_return(gateway, -EINVAL); | |
1331 | ||
1332 | *gateway = route->gw_addr; | |
1333 | return 0; | |
1334 | } |