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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> |
07630cea LP |
25 | #include <stdlib.h> |
26 | #include <string.h> | |
27 | ||
28 | #include "sd-dhcp-lease.h" | |
a6cc569e | 29 | |
b5efdb8a | 30 | #include "alloc-util.h" |
07630cea LP |
31 | #include "dhcp-lease-internal.h" |
32 | #include "dhcp-protocol.h" | |
33 | #include "dns-domain.h" | |
3ffd4af2 | 34 | #include "fd-util.h" |
fe8db0c5 | 35 | #include "fileio.h" |
b11d6a7b | 36 | #include "hexdecoct.h" |
958b66ea | 37 | #include "hostname-util.h" |
07630cea | 38 | #include "in-addr-util.h" |
0339cd77 | 39 | #include "network-internal.h" |
6bedfcbb | 40 | #include "parse-util.h" |
d054f0a4 | 41 | #include "stdio-util.h" |
b11d6a7b | 42 | #include "string-util.h" |
07630cea | 43 | #include "unaligned.h" |
a6cc569e TG |
44 | |
45 | int sd_dhcp_lease_get_address(sd_dhcp_lease *lease, struct in_addr *addr) { | |
46 | assert_return(lease, -EINVAL); | |
47 | assert_return(addr, -EINVAL); | |
48 | ||
0339cd77 LP |
49 | if (lease->address == 0) |
50 | return -ENODATA; | |
51 | ||
a6cc569e | 52 | addr->s_addr = lease->address; |
0339cd77 LP |
53 | return 0; |
54 | } | |
a6cc569e | 55 | |
0339cd77 LP |
56 | int sd_dhcp_lease_get_broadcast(sd_dhcp_lease *lease, struct in_addr *addr) { |
57 | assert_return(lease, -EINVAL); | |
58 | assert_return(addr, -EINVAL); | |
59 | ||
60 | if (!lease->have_broadcast) | |
61 | return -ENODATA; | |
62 | ||
63 | addr->s_addr = lease->broadcast; | |
a6cc569e TG |
64 | return 0; |
65 | } | |
66 | ||
68ceb9df PF |
67 | int sd_dhcp_lease_get_lifetime(sd_dhcp_lease *lease, uint32_t *lifetime) { |
68 | assert_return(lease, -EINVAL); | |
1c6eb4e3 | 69 | assert_return(lifetime, -EINVAL); |
68ceb9df | 70 | |
0339cd77 LP |
71 | if (lease->lifetime <= 0) |
72 | return -ENODATA; | |
73 | ||
68ceb9df | 74 | *lifetime = lease->lifetime; |
0339cd77 LP |
75 | return 0; |
76 | } | |
68ceb9df | 77 | |
0339cd77 LP |
78 | int sd_dhcp_lease_get_t1(sd_dhcp_lease *lease, uint32_t *t1) { |
79 | assert_return(lease, -EINVAL); | |
80 | assert_return(t1, -EINVAL); | |
81 | ||
82 | if (lease->t1 <= 0) | |
83 | return -ENODATA; | |
84 | ||
85 | *t1 = lease->t1; | |
86 | return 0; | |
87 | } | |
88 | ||
89 | int sd_dhcp_lease_get_t2(sd_dhcp_lease *lease, uint32_t *t2) { | |
90 | assert_return(lease, -EINVAL); | |
91 | assert_return(t2, -EINVAL); | |
92 | ||
93 | if (lease->t2 <= 0) | |
94 | return -ENODATA; | |
95 | ||
96 | *t2 = lease->t2; | |
68ceb9df PF |
97 | return 0; |
98 | } | |
99 | ||
a6cc569e TG |
100 | int sd_dhcp_lease_get_mtu(sd_dhcp_lease *lease, uint16_t *mtu) { |
101 | assert_return(lease, -EINVAL); | |
102 | assert_return(mtu, -EINVAL); | |
103 | ||
0339cd77 LP |
104 | if (lease->mtu <= 0) |
105 | return -ENODATA; | |
a6cc569e | 106 | |
0339cd77 | 107 | *mtu = lease->mtu; |
a6cc569e TG |
108 | return 0; |
109 | } | |
110 | ||
a2ba62c7 | 111 | int sd_dhcp_lease_get_dns(sd_dhcp_lease *lease, const struct in_addr **addr) { |
a6cc569e TG |
112 | assert_return(lease, -EINVAL); |
113 | assert_return(addr, -EINVAL); | |
a6cc569e | 114 | |
0339cd77 LP |
115 | if (lease->dns_size <= 0) |
116 | return -ENODATA; | |
a6cc569e | 117 | |
0339cd77 LP |
118 | *addr = lease->dns; |
119 | return (int) lease->dns_size; | |
a6cc569e TG |
120 | } |
121 | ||
a2ba62c7 | 122 | int sd_dhcp_lease_get_ntp(sd_dhcp_lease *lease, const struct in_addr **addr) { |
46844696 TG |
123 | assert_return(lease, -EINVAL); |
124 | assert_return(addr, -EINVAL); | |
46844696 | 125 | |
0339cd77 LP |
126 | if (lease->ntp_size <= 0) |
127 | return -ENODATA; | |
46844696 | 128 | |
0339cd77 LP |
129 | *addr = lease->ntp; |
130 | return (int) lease->ntp_size; | |
46844696 TG |
131 | } |
132 | ||
a6cc569e TG |
133 | int sd_dhcp_lease_get_domainname(sd_dhcp_lease *lease, const char **domainname) { |
134 | assert_return(lease, -EINVAL); | |
135 | assert_return(domainname, -EINVAL); | |
136 | ||
0339cd77 LP |
137 | if (!lease->domainname) |
138 | return -ENODATA; | |
a6cc569e | 139 | |
0339cd77 | 140 | *domainname = lease->domainname; |
a6cc569e TG |
141 | return 0; |
142 | } | |
143 | ||
144 | int sd_dhcp_lease_get_hostname(sd_dhcp_lease *lease, const char **hostname) { | |
145 | assert_return(lease, -EINVAL); | |
146 | assert_return(hostname, -EINVAL); | |
147 | ||
0339cd77 LP |
148 | if (!lease->hostname) |
149 | return -ENODATA; | |
a6cc569e | 150 | |
0339cd77 | 151 | *hostname = lease->hostname; |
a6cc569e TG |
152 | return 0; |
153 | } | |
154 | ||
ce78df79 TG |
155 | int sd_dhcp_lease_get_root_path(sd_dhcp_lease *lease, const char **root_path) { |
156 | assert_return(lease, -EINVAL); | |
157 | assert_return(root_path, -EINVAL); | |
158 | ||
0339cd77 LP |
159 | if (!lease->root_path) |
160 | return -ENODATA; | |
ce78df79 | 161 | |
0339cd77 | 162 | *root_path = lease->root_path; |
ce78df79 TG |
163 | return 0; |
164 | } | |
165 | ||
a6cc569e TG |
166 | int sd_dhcp_lease_get_router(sd_dhcp_lease *lease, struct in_addr *addr) { |
167 | assert_return(lease, -EINVAL); | |
168 | assert_return(addr, -EINVAL); | |
169 | ||
0339cd77 LP |
170 | if (lease->router == 0) |
171 | return -ENODATA; | |
a6cc569e | 172 | |
0339cd77 | 173 | addr->s_addr = lease->router; |
a6cc569e TG |
174 | return 0; |
175 | } | |
176 | ||
177 | int sd_dhcp_lease_get_netmask(sd_dhcp_lease *lease, struct in_addr *addr) { | |
178 | assert_return(lease, -EINVAL); | |
179 | assert_return(addr, -EINVAL); | |
180 | ||
0339cd77 LP |
181 | if (!lease->have_subnet_mask) |
182 | return -ENODATA; | |
a6cc569e | 183 | |
0339cd77 | 184 | addr->s_addr = lease->subnet_mask; |
a6cc569e TG |
185 | return 0; |
186 | } | |
187 | ||
0ad853bc TG |
188 | int sd_dhcp_lease_get_server_identifier(sd_dhcp_lease *lease, struct in_addr *addr) { |
189 | assert_return(lease, -EINVAL); | |
190 | assert_return(addr, -EINVAL); | |
191 | ||
0339cd77 LP |
192 | if (lease->server_address == 0) |
193 | return -ENODATA; | |
0ad853bc | 194 | |
0339cd77 | 195 | addr->s_addr = lease->server_address; |
0ad853bc TG |
196 | return 0; |
197 | } | |
198 | ||
8e34a618 TG |
199 | int sd_dhcp_lease_get_next_server(sd_dhcp_lease *lease, struct in_addr *addr) { |
200 | assert_return(lease, -EINVAL); | |
201 | assert_return(addr, -EINVAL); | |
202 | ||
0339cd77 LP |
203 | if (lease->next_server == 0) |
204 | return -ENODATA; | |
8e34a618 | 205 | |
0339cd77 | 206 | addr->s_addr = lease->next_server; |
8e34a618 TG |
207 | return 0; |
208 | } | |
209 | ||
f8693fc7 BG |
210 | /* |
211 | * The returned routes array must be freed by the caller. | |
212 | * Route objects have the same lifetime of the lease and must not be freed. | |
213 | */ | |
214 | int sd_dhcp_lease_get_routes(sd_dhcp_lease *lease, sd_dhcp_route ***routes) { | |
215 | sd_dhcp_route **ret; | |
216 | unsigned i; | |
217 | ||
e1ea665e EY |
218 | assert_return(lease, -EINVAL); |
219 | assert_return(routes, -EINVAL); | |
e1ea665e | 220 | |
0339cd77 LP |
221 | if (lease->static_route_size <= 0) |
222 | return -ENODATA; | |
e1ea665e | 223 | |
f8693fc7 BG |
224 | ret = new(sd_dhcp_route *, lease->static_route_size); |
225 | if (!ret) | |
226 | return -ENOMEM; | |
227 | ||
228 | for (i = 0; i < lease->static_route_size; i++) | |
229 | ret[i] = &lease->static_route[i]; | |
230 | ||
231 | *routes = ret; | |
0339cd77 | 232 | return (int) lease->static_route_size; |
e1ea665e EY |
233 | } |
234 | ||
b85bc551 DW |
235 | int sd_dhcp_lease_get_search_domains(sd_dhcp_lease *lease, char ***domains) { |
236 | unsigned r; | |
237 | ||
238 | assert_return(lease, -EINVAL); | |
239 | assert_return(domains, -EINVAL); | |
240 | ||
241 | r = strv_length(lease->search_domains); | |
242 | if (r > 0) { | |
243 | *domains = lease->search_domains; | |
244 | return (int) r; | |
245 | } | |
246 | ||
247 | return -ENODATA; | |
248 | } | |
249 | ||
0339cd77 | 250 | int sd_dhcp_lease_get_vendor_specific(sd_dhcp_lease *lease, const void **data, size_t *data_len) { |
e43a8393 BG |
251 | assert_return(lease, -EINVAL); |
252 | assert_return(data, -EINVAL); | |
253 | assert_return(data_len, -EINVAL); | |
254 | ||
0339cd77 LP |
255 | if (lease->vendor_specific_len <= 0) |
256 | return -ENODATA; | |
e43a8393 BG |
257 | |
258 | *data = lease->vendor_specific; | |
259 | *data_len = lease->vendor_specific_len; | |
e43a8393 BG |
260 | return 0; |
261 | } | |
262 | ||
a6cc569e | 263 | sd_dhcp_lease *sd_dhcp_lease_ref(sd_dhcp_lease *lease) { |
3733eec3 LP |
264 | |
265 | if (!lease) | |
266 | return NULL; | |
267 | ||
268 | assert(lease->n_ref >= 1); | |
269 | lease->n_ref++; | |
a6cc569e TG |
270 | |
271 | return lease; | |
272 | } | |
273 | ||
274 | sd_dhcp_lease *sd_dhcp_lease_unref(sd_dhcp_lease *lease) { | |
7e753d9d | 275 | |
3733eec3 LP |
276 | if (!lease) |
277 | return NULL; | |
7e753d9d | 278 | |
3733eec3 LP |
279 | assert(lease->n_ref >= 1); |
280 | lease->n_ref--; | |
281 | ||
282 | if (lease->n_ref > 0) | |
283 | return NULL; | |
284 | ||
285 | while (lease->private_options) { | |
286 | struct sd_dhcp_raw_option *option = lease->private_options; | |
287 | ||
288 | LIST_REMOVE(options, lease->private_options, option); | |
289 | ||
290 | free(option->data); | |
291 | free(option); | |
a6cc569e TG |
292 | } |
293 | ||
3733eec3 LP |
294 | free(lease->hostname); |
295 | free(lease->domainname); | |
296 | free(lease->dns); | |
297 | free(lease->ntp); | |
298 | free(lease->static_route); | |
299 | free(lease->client_id); | |
300 | free(lease->vendor_specific); | |
b85bc551 | 301 | strv_free(lease->search_domains); |
6b430fdb | 302 | return mfree(lease); |
a6cc569e TG |
303 | } |
304 | ||
0339cd77 | 305 | static int lease_parse_u32(const uint8_t *option, size_t len, uint32_t *ret, uint32_t min) { |
e140ae58 TG |
306 | assert(option); |
307 | assert(ret); | |
308 | ||
0339cd77 LP |
309 | if (len != 4) |
310 | return -EINVAL; | |
e140ae58 | 311 | |
0339cd77 LP |
312 | *ret = unaligned_read_be32((be32_t*) option); |
313 | if (*ret < min) | |
314 | *ret = min; | |
e140ae58 | 315 | |
0339cd77 | 316 | return 0; |
e140ae58 TG |
317 | } |
318 | ||
0339cd77 | 319 | static int lease_parse_u16(const uint8_t *option, size_t len, uint16_t *ret, uint16_t min) { |
e140ae58 TG |
320 | assert(option); |
321 | assert(ret); | |
322 | ||
0339cd77 LP |
323 | if (len != 2) |
324 | return -EINVAL; | |
e140ae58 | 325 | |
0339cd77 LP |
326 | *ret = unaligned_read_be16((be16_t*) option); |
327 | if (*ret < min) | |
328 | *ret = min; | |
f5c0c00f | 329 | |
0339cd77 | 330 | return 0; |
f5c0c00f TG |
331 | } |
332 | ||
0339cd77 | 333 | static int lease_parse_be32(const uint8_t *option, size_t len, be32_t *ret) { |
f5c0c00f TG |
334 | assert(option); |
335 | assert(ret); | |
336 | ||
0339cd77 LP |
337 | if (len != 4) |
338 | return -EINVAL; | |
f5c0c00f | 339 | |
0339cd77 LP |
340 | memcpy(ret, option, 4); |
341 | return 0; | |
f5c0c00f TG |
342 | } |
343 | ||
e140ae58 TG |
344 | static int lease_parse_string(const uint8_t *option, size_t len, char **ret) { |
345 | assert(option); | |
346 | assert(ret); | |
347 | ||
0339cd77 LP |
348 | if (len <= 0) |
349 | *ret = mfree(*ret); | |
350 | else { | |
e140ae58 TG |
351 | char *string; |
352 | ||
e989fd9b LP |
353 | /* |
354 | * One trailing NUL byte is OK, we don't mind. See: | |
355 | * https://github.com/systemd/systemd/issues/1337 | |
356 | */ | |
357 | if (memchr(option, 0, len - 1)) | |
43f447b1 LP |
358 | return -EINVAL; |
359 | ||
e989fd9b | 360 | string = strndup((const char *) option, len); |
e140ae58 | 361 | if (!string) |
43f447b1 | 362 | return -ENOMEM; |
e140ae58 TG |
363 | |
364 | free(*ret); | |
365 | *ret = string; | |
0339cd77 | 366 | } |
e140ae58 TG |
367 | |
368 | return 0; | |
369 | } | |
370 | ||
978c6477 LP |
371 | static int lease_parse_domain(const uint8_t *option, size_t len, char **ret) { |
372 | _cleanup_free_ char *name = NULL, *normalized = NULL; | |
373 | int r; | |
374 | ||
375 | assert(option); | |
376 | assert(ret); | |
377 | ||
378 | r = lease_parse_string(option, len, &name); | |
379 | if (r < 0) | |
380 | return r; | |
381 | if (!name) { | |
382 | *ret = mfree(*ret); | |
383 | return 0; | |
384 | } | |
385 | ||
386 | r = dns_name_normalize(name, &normalized); | |
387 | if (r < 0) | |
388 | return r; | |
389 | ||
390 | if (is_localhost(normalized)) | |
391 | return -EINVAL; | |
392 | ||
393 | if (dns_name_is_root(normalized)) | |
394 | return -EINVAL; | |
395 | ||
396 | free(*ret); | |
397 | *ret = normalized; | |
398 | normalized = NULL; | |
399 | ||
400 | return 0; | |
401 | } | |
402 | ||
d9ec2e63 LP |
403 | static void filter_bogus_addresses(struct in_addr *addresses, size_t *n) { |
404 | size_t i, j; | |
405 | ||
406 | /* Silently filter DNS/NTP servers supplied to us that do not make outside of the local scope. */ | |
407 | ||
408 | for (i = 0, j = 0; i < *n; i ++) { | |
409 | ||
410 | if (in4_addr_is_null(addresses+i) || | |
411 | in4_addr_is_localhost(addresses+i)) | |
412 | continue; | |
413 | ||
414 | addresses[j++] = addresses[i]; | |
415 | } | |
416 | ||
417 | *n = j; | |
418 | } | |
419 | ||
0339cd77 | 420 | static int lease_parse_in_addrs(const uint8_t *option, size_t len, struct in_addr **ret, size_t *n_ret) { |
e140ae58 TG |
421 | assert(option); |
422 | assert(ret); | |
0339cd77 | 423 | assert(n_ret); |
e140ae58 | 424 | |
0339cd77 LP |
425 | if (len <= 0) { |
426 | *ret = mfree(*ret); | |
427 | *n_ret = 0; | |
428 | } else { | |
429 | size_t n_addresses; | |
e140ae58 TG |
430 | struct in_addr *addresses; |
431 | ||
0339cd77 LP |
432 | if (len % 4 != 0) |
433 | return -EINVAL; | |
e140ae58 | 434 | |
0339cd77 LP |
435 | n_addresses = len / 4; |
436 | ||
437 | addresses = newdup(struct in_addr, option, n_addresses); | |
e140ae58 TG |
438 | if (!addresses) |
439 | return -ENOMEM; | |
440 | ||
d9ec2e63 LP |
441 | filter_bogus_addresses(addresses, &n_addresses); |
442 | ||
e140ae58 TG |
443 | free(*ret); |
444 | *ret = addresses; | |
0339cd77 | 445 | *n_ret = n_addresses; |
e140ae58 TG |
446 | } |
447 | ||
448 | return 0; | |
449 | } | |
450 | ||
0339cd77 LP |
451 | static int lease_parse_routes( |
452 | const uint8_t *option, size_t len, | |
453 | struct sd_dhcp_route **routes, size_t *routes_size, size_t *routes_allocated) { | |
e1ea665e EY |
454 | |
455 | struct in_addr addr; | |
456 | ||
0339cd77 | 457 | assert(option || len <= 0); |
e1ea665e EY |
458 | assert(routes); |
459 | assert(routes_size); | |
460 | assert(routes_allocated); | |
461 | ||
0339cd77 | 462 | if (len <= 0) |
e1ea665e EY |
463 | return 0; |
464 | ||
465 | if (len % 8 != 0) | |
466 | return -EINVAL; | |
467 | ||
468 | if (!GREEDY_REALLOC(*routes, *routes_allocated, *routes_size + (len / 8))) | |
469 | return -ENOMEM; | |
470 | ||
471 | while (len >= 8) { | |
472 | struct sd_dhcp_route *route = *routes + *routes_size; | |
1caa12d0 | 473 | int r; |
e1ea665e | 474 | |
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; | |
518 | ||
519 | dst_octets = (*option == 0 ? 0 : ((*option - 1) / 8) + 1); | |
520 | route->dst_prefixlen = *option; | |
521 | option++; | |
522 | len--; | |
523 | ||
524 | /* can't have more than 4 octets in IPv4 */ | |
525 | if (dst_octets > 4 || len < dst_octets) | |
526 | return -EINVAL; | |
527 | ||
528 | route->dst_addr.s_addr = 0; | |
529 | memcpy(&route->dst_addr.s_addr, option, dst_octets); | |
530 | option += dst_octets; | |
531 | len -= dst_octets; | |
532 | ||
533 | if (len < 4) | |
534 | return -EINVAL; | |
535 | ||
b14fff6e | 536 | assert_se(lease_parse_be32(option, 4, &route->gw_addr.s_addr) >= 0); |
e1ea665e EY |
537 | option += 4; |
538 | len -= 4; | |
539 | ||
540 | (*routes_size)++; | |
541 | } | |
542 | ||
543 | return 0; | |
544 | } | |
545 | ||
e4735228 | 546 | int dhcp_lease_parse_options(uint8_t code, uint8_t len, const void *option, void *userdata) { |
2d03c0b8 | 547 | sd_dhcp_lease *lease = userdata; |
e140ae58 TG |
548 | int r; |
549 | ||
550 | assert(lease); | |
a6cc569e TG |
551 | |
552 | switch(code) { | |
553 | ||
22805d92 | 554 | case SD_DHCP_OPTION_IP_ADDRESS_LEASE_TIME: |
0339cd77 LP |
555 | r = lease_parse_u32(option, len, &lease->lifetime, 1); |
556 | if (r < 0) | |
557 | log_debug_errno(r, "Failed to parse lease time, ignoring: %m"); | |
558 | ||
a6cc569e TG |
559 | break; |
560 | ||
22805d92 | 561 | case SD_DHCP_OPTION_SERVER_IDENTIFIER: |
0339cd77 LP |
562 | r = lease_parse_be32(option, len, &lease->server_address); |
563 | if (r < 0) | |
564 | log_debug_errno(r, "Failed to parse server identifier, ignoring: %m"); | |
565 | ||
a6cc569e TG |
566 | break; |
567 | ||
22805d92 | 568 | case SD_DHCP_OPTION_SUBNET_MASK: |
0339cd77 LP |
569 | r = lease_parse_be32(option, len, &lease->subnet_mask); |
570 | if (r < 0) | |
571 | log_debug_errno(r, "Failed to parse subnet mask, ignoring: %m"); | |
572 | else | |
573 | lease->have_subnet_mask = true; | |
a6cc569e TG |
574 | break; |
575 | ||
22805d92 | 576 | case SD_DHCP_OPTION_BROADCAST: |
0339cd77 LP |
577 | r = lease_parse_be32(option, len, &lease->broadcast); |
578 | if (r < 0) | |
579 | log_debug_errno(r, "Failed to parse broadcast address, ignoring: %m"); | |
580 | else | |
581 | lease->have_broadcast = true; | |
f5c0c00f TG |
582 | break; |
583 | ||
22805d92 | 584 | case SD_DHCP_OPTION_ROUTER: |
0339cd77 LP |
585 | if (len >= 4) { |
586 | r = lease_parse_be32(option, 4, &lease->router); | |
587 | if (r < 0) | |
588 | log_debug_errno(r, "Failed to parse router address, ignoring: %m"); | |
589 | } | |
a6cc569e TG |
590 | break; |
591 | ||
22805d92 | 592 | case SD_DHCP_OPTION_DOMAIN_NAME_SERVER: |
0339cd77 LP |
593 | r = lease_parse_in_addrs(option, len, &lease->dns, &lease->dns_size); |
594 | if (r < 0) | |
595 | log_debug_errno(r, "Failed to parse DNS server, ignoring: %m"); | |
a6cc569e TG |
596 | break; |
597 | ||
22805d92 | 598 | case SD_DHCP_OPTION_NTP_SERVER: |
0339cd77 LP |
599 | r = lease_parse_in_addrs(option, len, &lease->ntp, &lease->ntp_size); |
600 | if (r < 0) | |
601 | log_debug_errno(r, "Failed to parse NTP server, ignoring: %m"); | |
f5c0c00f TG |
602 | break; |
603 | ||
22805d92 | 604 | case SD_DHCP_OPTION_STATIC_ROUTE: |
0339cd77 LP |
605 | r = lease_parse_routes(option, len, &lease->static_route, &lease->static_route_size, &lease->static_route_allocated); |
606 | if (r < 0) | |
607 | log_debug_errno(r, "Failed to parse static routes, ignoring: %m"); | |
f5c0c00f TG |
608 | break; |
609 | ||
22805d92 | 610 | case SD_DHCP_OPTION_INTERFACE_MTU: |
0339cd77 LP |
611 | r = lease_parse_u16(option, len, &lease->mtu, 68); |
612 | if (r < 0) | |
613 | log_debug_errno(r, "Failed to parse MTU, ignoring: %m"); | |
955d99ed | 614 | if (lease->mtu < DHCP_DEFAULT_MIN_SIZE) { |
4dd53da9 | 615 | log_debug("MTU value of %" PRIu16 " too small. Using default MTU value of %d instead.", lease->mtu, DHCP_DEFAULT_MIN_SIZE); |
955d99ed MG |
616 | lease->mtu = DHCP_DEFAULT_MIN_SIZE; |
617 | } | |
618 | ||
f5c0c00f TG |
619 | break; |
620 | ||
978c6477 LP |
621 | case SD_DHCP_OPTION_DOMAIN_NAME: |
622 | r = lease_parse_domain(option, len, &lease->domainname); | |
0339cd77 LP |
623 | if (r < 0) { |
624 | log_debug_errno(r, "Failed to parse domain name, ignoring: %m"); | |
625 | return 0; | |
626 | } | |
a6cc569e | 627 | |
784d9b9c | 628 | break; |
784d9b9c | 629 | |
b85bc551 DW |
630 | case SD_DHCP_OPTION_DOMAIN_SEARCH_LIST: |
631 | r = dhcp_lease_parse_search_domains(option, len, &lease->search_domains); | |
632 | if (r < 0) | |
633 | log_debug_errno(r, "Failed to parse Domain Search List, ignoring: %m"); | |
634 | break; | |
635 | ||
978c6477 LP |
636 | case SD_DHCP_OPTION_HOST_NAME: |
637 | r = lease_parse_domain(option, len, &lease->hostname); | |
0339cd77 LP |
638 | if (r < 0) { |
639 | log_debug_errno(r, "Failed to parse host name, ignoring: %m"); | |
640 | return 0; | |
641 | } | |
a6cc569e | 642 | |
784d9b9c | 643 | break; |
ce78df79 | 644 | |
22805d92 | 645 | case SD_DHCP_OPTION_ROOT_PATH: |
0339cd77 LP |
646 | r = lease_parse_string(option, len, &lease->root_path); |
647 | if (r < 0) | |
648 | log_debug_errno(r, "Failed to parse root path, ignoring: %m"); | |
649 | break; | |
ce78df79 | 650 | |
22805d92 | 651 | case SD_DHCP_OPTION_RENEWAL_T1_TIME: |
0339cd77 LP |
652 | r = lease_parse_u32(option, len, &lease->t1, 1); |
653 | if (r < 0) | |
654 | log_debug_errno(r, "Failed to parse T1 time, ignoring: %m"); | |
a6cc569e TG |
655 | break; |
656 | ||
22805d92 | 657 | case SD_DHCP_OPTION_REBINDING_T2_TIME: |
0339cd77 LP |
658 | r = lease_parse_u32(option, len, &lease->t2, 1); |
659 | if (r < 0) | |
660 | log_debug_errno(r, "Failed to parse T2 time, ignoring: %m"); | |
a6cc569e | 661 | break; |
e1ea665e | 662 | |
22805d92 | 663 | case SD_DHCP_OPTION_CLASSLESS_STATIC_ROUTE: |
0339cd77 | 664 | r = lease_parse_classless_routes( |
2d03c0b8 LP |
665 | option, len, |
666 | &lease->static_route, | |
667 | &lease->static_route_size, | |
668 | &lease->static_route_allocated); | |
0339cd77 LP |
669 | if (r < 0) |
670 | log_debug_errno(r, "Failed to parse classless routes, ignoring: %m"); | |
671 | break; | |
e43a8393 | 672 | |
22805d92 | 673 | case SD_DHCP_OPTION_NEW_TZDB_TIMEZONE: { |
8eb9058d LP |
674 | _cleanup_free_ char *tz = NULL; |
675 | ||
676 | r = lease_parse_string(option, len, &tz); | |
0339cd77 LP |
677 | if (r < 0) { |
678 | log_debug_errno(r, "Failed to parse timezone option, ignoring: %m"); | |
679 | return 0; | |
680 | } | |
8eb9058d | 681 | |
0339cd77 LP |
682 | if (!timezone_is_valid(tz)) { |
683 | log_debug_errno(r, "Timezone is not valid, ignoring: %m"); | |
684 | return 0; | |
685 | } | |
8eb9058d LP |
686 | |
687 | free(lease->timezone); | |
688 | lease->timezone = tz; | |
689 | tz = NULL; | |
0339cd77 | 690 | |
8eb9058d LP |
691 | break; |
692 | } | |
693 | ||
22805d92 | 694 | case SD_DHCP_OPTION_VENDOR_SPECIFIC: |
2d03c0b8 | 695 | |
0339cd77 LP |
696 | if (len <= 0) |
697 | lease->vendor_specific = mfree(lease->vendor_specific); | |
698 | else { | |
699 | void *p; | |
700 | ||
701 | p = memdup(option, len); | |
702 | if (!p) | |
e43a8393 | 703 | return -ENOMEM; |
e43a8393 | 704 | |
0339cd77 LP |
705 | free(lease->vendor_specific); |
706 | lease->vendor_specific = p; | |
707 | } | |
7e753d9d | 708 | |
0339cd77 LP |
709 | lease->vendor_specific_len = len; |
710 | break; | |
7e753d9d | 711 | |
22805d92 | 712 | case SD_DHCP_OPTION_PRIVATE_BASE ... SD_DHCP_OPTION_PRIVATE_LAST: |
7e753d9d AC |
713 | r = dhcp_lease_insert_private_option(lease, code, option, len); |
714 | if (r < 0) | |
715 | return r; | |
0339cd77 LP |
716 | |
717 | break; | |
718 | ||
719 | default: | |
f693e9b3 | 720 | log_debug("Ignoring option DHCP option %"PRIu8" while parsing.", code); |
0339cd77 | 721 | break; |
a6cc569e TG |
722 | } |
723 | ||
724 | return 0; | |
725 | } | |
726 | ||
b85bc551 DW |
727 | /* Parses compressed domain names. */ |
728 | int dhcp_lease_parse_search_domains(const uint8_t *option, size_t len, char ***domains) { | |
729 | _cleanup_strv_free_ char **names = NULL; | |
730 | size_t pos = 0, cnt = 0; | |
731 | int r; | |
732 | ||
733 | assert(domains); | |
734 | assert_return(option && len > 0, -ENODATA); | |
735 | ||
736 | while (pos < len) { | |
737 | _cleanup_free_ char *name = NULL; | |
738 | size_t n = 0, allocated = 0; | |
739 | size_t jump_barrier = pos, next_chunk = 0; | |
740 | bool first = true; | |
741 | ||
742 | for (;;) { | |
743 | uint8_t c; | |
744 | c = option[pos++]; | |
745 | ||
746 | if (c == 0) { | |
747 | /* End of name */ | |
748 | break; | |
749 | } else if (c <= 63) { | |
750 | const char *label; | |
751 | ||
752 | /* Literal label */ | |
753 | label = (const char*) (option + pos); | |
754 | pos += c; | |
755 | if (pos >= len) | |
756 | return -EBADMSG; | |
757 | ||
758 | if (!GREEDY_REALLOC(name, allocated, n + !first + DNS_LABEL_ESCAPED_MAX)) | |
759 | return -ENOMEM; | |
760 | ||
761 | if (first) | |
762 | first = false; | |
763 | else | |
764 | name[n++] = '.'; | |
765 | ||
766 | r = dns_label_escape(label, c, name + n, DNS_LABEL_ESCAPED_MAX); | |
767 | if (r < 0) | |
768 | return r; | |
769 | ||
770 | n += r; | |
771 | } else if ((c & 0xc0) == 0xc0) { | |
772 | /* Pointer */ | |
773 | ||
774 | uint8_t d; | |
775 | uint16_t ptr; | |
776 | ||
777 | if (pos >= len) | |
778 | return -EBADMSG; | |
779 | ||
780 | d = option[pos++]; | |
781 | ptr = (uint16_t) (c & ~0xc0) << 8 | (uint16_t) d; | |
782 | ||
783 | /* Jumps are limited to a "prior occurrence" (RFC-1035 4.1.4) */ | |
784 | if (ptr >= jump_barrier) | |
785 | return -EBADMSG; | |
786 | jump_barrier = ptr; | |
787 | ||
788 | /* Save current location so we don't end up re-parsing what's parsed so far. */ | |
789 | if (next_chunk == 0) | |
790 | next_chunk = pos; | |
791 | ||
792 | pos = ptr; | |
793 | } else | |
794 | return -EBADMSG; | |
795 | } | |
796 | ||
797 | if (!GREEDY_REALLOC(name, allocated, n + 1)) | |
798 | return -ENOMEM; | |
799 | name[n] = 0; | |
800 | ||
801 | r = strv_extend(&names, name); | |
802 | if (r < 0) | |
803 | return r; | |
804 | ||
805 | cnt++; | |
806 | ||
807 | if (next_chunk != 0) | |
808 | pos = next_chunk; | |
809 | } | |
810 | ||
811 | *domains = names; | |
812 | names = NULL; | |
813 | ||
814 | return cnt; | |
815 | } | |
816 | ||
0339cd77 | 817 | int dhcp_lease_insert_private_option(sd_dhcp_lease *lease, uint8_t tag, const void *data, uint8_t len) { |
7e753d9d AC |
818 | struct sd_dhcp_raw_option *cur, *option; |
819 | ||
0339cd77 LP |
820 | assert(lease); |
821 | ||
7e753d9d AC |
822 | LIST_FOREACH(options, cur, lease->private_options) { |
823 | if (tag < cur->tag) | |
824 | break; | |
0339cd77 LP |
825 | if (tag == cur->tag) { |
826 | log_debug("Ignoring duplicate option, tagged %i.", tag); | |
7e753d9d AC |
827 | return 0; |
828 | } | |
829 | } | |
830 | ||
831 | option = new(struct sd_dhcp_raw_option, 1); | |
832 | if (!option) | |
833 | return -ENOMEM; | |
834 | ||
835 | option->tag = tag; | |
836 | option->length = len; | |
837 | option->data = memdup(data, len); | |
838 | if (!option->data) { | |
839 | free(option); | |
840 | return -ENOMEM; | |
841 | } | |
842 | ||
843 | LIST_INSERT_BEFORE(options, lease->private_options, cur, option); | |
7e753d9d AC |
844 | return 0; |
845 | } | |
846 | ||
a6cc569e | 847 | int dhcp_lease_new(sd_dhcp_lease **ret) { |
6e00a806 | 848 | sd_dhcp_lease *lease; |
a6cc569e TG |
849 | |
850 | lease = new0(sd_dhcp_lease, 1); | |
851 | if (!lease) | |
852 | return -ENOMEM; | |
853 | ||
8ddbeaa2 | 854 | lease->router = INADDR_ANY; |
3733eec3 | 855 | lease->n_ref = 1; |
a6cc569e TG |
856 | |
857 | *ret = lease; | |
a6cc569e TG |
858 | return 0; |
859 | } | |
fe8db0c5 | 860 | |
bd91b83e | 861 | int dhcp_lease_save(sd_dhcp_lease *lease, const char *lease_file) { |
fe8db0c5 TG |
862 | _cleanup_free_ char *temp_path = NULL; |
863 | _cleanup_fclose_ FILE *f = NULL; | |
a073309f | 864 | struct sd_dhcp_raw_option *option; |
fe8db0c5 | 865 | struct in_addr address; |
a2ba62c7 | 866 | const struct in_addr *addresses; |
e4735228 | 867 | const void *client_id, *data; |
e43a8393 | 868 | size_t client_id_len, data_len; |
fe8db0c5 TG |
869 | const char *string; |
870 | uint16_t mtu; | |
f8693fc7 | 871 | _cleanup_free_ sd_dhcp_route **routes = NULL; |
b85bc551 | 872 | char **search_domains = NULL; |
0339cd77 | 873 | uint32_t t1, t2, lifetime; |
fe8db0c5 TG |
874 | int r; |
875 | ||
876 | assert(lease); | |
877 | assert(lease_file); | |
878 | ||
fe8db0c5 TG |
879 | r = fopen_temporary(lease_file, &f, &temp_path); |
880 | if (r < 0) | |
dacd6cee | 881 | goto fail; |
fe8db0c5 TG |
882 | |
883 | fchmod(fileno(f), 0644); | |
884 | ||
fe8db0c5 | 885 | fprintf(f, |
0339cd77 | 886 | "# This is private data. Do not parse.\n"); |
fe8db0c5 | 887 | |
0339cd77 LP |
888 | r = sd_dhcp_lease_get_address(lease, &address); |
889 | if (r >= 0) | |
890 | fprintf(f, "ADDRESS=%s\n", inet_ntoa(address)); | |
fe8db0c5 | 891 | |
0339cd77 LP |
892 | r = sd_dhcp_lease_get_netmask(lease, &address); |
893 | if (r >= 0) | |
894 | fprintf(f, "NETMASK=%s\n", inet_ntoa(address)); | |
fe8db0c5 | 895 | |
8ddbeaa2 UTL |
896 | r = sd_dhcp_lease_get_router(lease, &address); |
897 | if (r >= 0) | |
898 | fprintf(f, "ROUTER=%s\n", inet_ntoa(address)); | |
899 | ||
0ad853bc | 900 | r = sd_dhcp_lease_get_server_identifier(lease, &address); |
109731eb | 901 | if (r >= 0) |
0339cd77 | 902 | fprintf(f, "SERVER_ADDRESS=%s\n", inet_ntoa(address)); |
0ad853bc | 903 | |
8e34a618 | 904 | r = sd_dhcp_lease_get_next_server(lease, &address); |
109731eb TG |
905 | if (r >= 0) |
906 | fprintf(f, "NEXT_SERVER=%s\n", inet_ntoa(address)); | |
8e34a618 | 907 | |
0339cd77 LP |
908 | r = sd_dhcp_lease_get_broadcast(lease, &address); |
909 | if (r >= 0) | |
910 | fprintf(f, "BROADCAST=%s\n", inet_ntoa(address)); | |
911 | ||
fe8db0c5 TG |
912 | r = sd_dhcp_lease_get_mtu(lease, &mtu); |
913 | if (r >= 0) | |
914 | fprintf(f, "MTU=%" PRIu16 "\n", mtu); | |
915 | ||
0339cd77 LP |
916 | r = sd_dhcp_lease_get_t1(lease, &t1); |
917 | if (r >= 0) | |
918 | fprintf(f, "T1=%" PRIu32 "\n", t1); | |
919 | ||
920 | r = sd_dhcp_lease_get_t2(lease, &t2); | |
109731eb | 921 | if (r >= 0) |
0339cd77 LP |
922 | fprintf(f, "T2=%" PRIu32 "\n", t2); |
923 | ||
924 | r = sd_dhcp_lease_get_lifetime(lease, &lifetime); | |
925 | if (r >= 0) | |
926 | fprintf(f, "LIFETIME=%" PRIu32 "\n", lifetime); | |
927 | ||
928 | r = sd_dhcp_lease_get_dns(lease, &addresses); | |
929 | if (r > 0) { | |
4b61c875 | 930 | fputs_unlocked("DNS=", f); |
b0e39c82 | 931 | serialize_in_addrs(f, addresses, r); |
4b61c875 | 932 | fputs_unlocked("\n", f); |
0339cd77 | 933 | } |
109731eb | 934 | |
a2ba62c7 | 935 | r = sd_dhcp_lease_get_ntp(lease, &addresses); |
0339cd77 | 936 | if (r > 0) { |
4b61c875 | 937 | fputs_unlocked("NTP=", f); |
b0e39c82 | 938 | serialize_in_addrs(f, addresses, r); |
4b61c875 | 939 | fputs_unlocked("\n", f); |
0339cd77 | 940 | } |
fe8db0c5 TG |
941 | |
942 | r = sd_dhcp_lease_get_domainname(lease, &string); | |
943 | if (r >= 0) | |
944 | fprintf(f, "DOMAINNAME=%s\n", string); | |
945 | ||
b85bc551 DW |
946 | r = sd_dhcp_lease_get_search_domains(lease, &search_domains); |
947 | if (r > 0) { | |
4b61c875 | 948 | fputs_unlocked("DOMAIN_SEARCH_LIST=", f); |
b85bc551 | 949 | fputstrv(f, search_domains, NULL, NULL); |
4b61c875 | 950 | fputs_unlocked("\n", f); |
b85bc551 DW |
951 | } |
952 | ||
fe8db0c5 TG |
953 | r = sd_dhcp_lease_get_hostname(lease, &string); |
954 | if (r >= 0) | |
955 | fprintf(f, "HOSTNAME=%s\n", string); | |
956 | ||
ce78df79 TG |
957 | r = sd_dhcp_lease_get_root_path(lease, &string); |
958 | if (r >= 0) | |
959 | fprintf(f, "ROOT_PATH=%s\n", string); | |
960 | ||
a2ba62c7 | 961 | r = sd_dhcp_lease_get_routes(lease, &routes); |
0339cd77 | 962 | if (r > 0) |
a2ba62c7 | 963 | serialize_dhcp_routes(f, "ROUTES", routes, r); |
e1ea665e | 964 | |
8eb9058d LP |
965 | r = sd_dhcp_lease_get_timezone(lease, &string); |
966 | if (r >= 0) | |
967 | fprintf(f, "TIMEZONE=%s\n", string); | |
968 | ||
e37f74a6 DW |
969 | r = sd_dhcp_lease_get_client_id(lease, &client_id, &client_id_len); |
970 | if (r >= 0) { | |
3587161a | 971 | _cleanup_free_ char *client_id_hex = NULL; |
e37f74a6 | 972 | |
dde8bb32 | 973 | client_id_hex = hexmem(client_id, client_id_len); |
e37f74a6 DW |
974 | if (!client_id_hex) { |
975 | r = -ENOMEM; | |
dacd6cee | 976 | goto fail; |
e37f74a6 DW |
977 | } |
978 | fprintf(f, "CLIENTID=%s\n", client_id_hex); | |
979 | } | |
980 | ||
e43a8393 BG |
981 | r = sd_dhcp_lease_get_vendor_specific(lease, &data, &data_len); |
982 | if (r >= 0) { | |
983 | _cleanup_free_ char *option_hex = NULL; | |
984 | ||
985 | option_hex = hexmem(data, data_len); | |
986 | if (!option_hex) { | |
987 | r = -ENOMEM; | |
dacd6cee | 988 | goto fail; |
e43a8393 BG |
989 | } |
990 | fprintf(f, "VENDOR_SPECIFIC=%s\n", option_hex); | |
991 | } | |
992 | ||
a073309f | 993 | LIST_FOREACH(options, option, lease->private_options) { |
30afef87 | 994 | char key[strlen("OPTION_000")+1]; |
0339cd77 | 995 | |
d054f0a4 | 996 | xsprintf(key, "OPTION_%" PRIu8, option->tag); |
a073309f AC |
997 | r = serialize_dhcp_option(f, key, option->data, option->length); |
998 | if (r < 0) | |
999 | goto fail; | |
1000 | } | |
1001 | ||
dacd6cee LP |
1002 | r = fflush_and_check(f); |
1003 | if (r < 0) | |
1004 | goto fail; | |
fe8db0c5 | 1005 | |
dacd6cee | 1006 | if (rename(temp_path, lease_file) < 0) { |
fe8db0c5 | 1007 | r = -errno; |
dacd6cee | 1008 | goto fail; |
fe8db0c5 TG |
1009 | } |
1010 | ||
dacd6cee LP |
1011 | return 0; |
1012 | ||
1013 | fail: | |
1014 | if (temp_path) | |
1015 | (void) unlink(temp_path); | |
fe8db0c5 | 1016 | |
dacd6cee | 1017 | return log_error_errno(r, "Failed to save lease data %s: %m", lease_file); |
fe8db0c5 TG |
1018 | } |
1019 | ||
bd91b83e | 1020 | int dhcp_lease_load(sd_dhcp_lease **ret, const char *lease_file) { |
0339cd77 | 1021 | |
4afd3348 | 1022 | _cleanup_(sd_dhcp_lease_unrefp) sd_dhcp_lease *lease = NULL; |
0339cd77 LP |
1023 | _cleanup_free_ char |
1024 | *address = NULL, | |
1025 | *router = NULL, | |
1026 | *netmask = NULL, | |
1027 | *server_address = NULL, | |
1028 | *next_server = NULL, | |
1029 | *broadcast = NULL, | |
1030 | *dns = NULL, | |
1031 | *ntp = NULL, | |
1032 | *mtu = NULL, | |
1033 | *routes = NULL, | |
b85bc551 | 1034 | *domains = NULL, |
0339cd77 LP |
1035 | *client_id_hex = NULL, |
1036 | *vendor_specific_hex = NULL, | |
1037 | *lifetime = NULL, | |
1038 | *t1 = NULL, | |
1039 | *t2 = NULL, | |
22805d92 | 1040 | *options[SD_DHCP_OPTION_PRIVATE_LAST - SD_DHCP_OPTION_PRIVATE_BASE + 1] = {}; |
0339cd77 | 1041 | |
a073309f | 1042 | int r, i; |
fe8db0c5 TG |
1043 | |
1044 | assert(lease_file); | |
1045 | assert(ret); | |
1046 | ||
1047 | r = dhcp_lease_new(&lease); | |
1048 | if (r < 0) | |
1049 | return r; | |
1050 | ||
1051 | r = parse_env_file(lease_file, NEWLINE, | |
1052 | "ADDRESS", &address, | |
1053 | "ROUTER", &router, | |
1054 | "NETMASK", &netmask, | |
0ad853bc | 1055 | "SERVER_IDENTIFIER", &server_address, |
8e34a618 | 1056 | "NEXT_SERVER", &next_server, |
0339cd77 | 1057 | "BROADCAST", &broadcast, |
109731eb TG |
1058 | "DNS", &dns, |
1059 | "NTP", &ntp, | |
fe8db0c5 TG |
1060 | "MTU", &mtu, |
1061 | "DOMAINNAME", &lease->domainname, | |
1062 | "HOSTNAME", &lease->hostname, | |
b85bc551 | 1063 | "DOMAIN_SEARCH_LIST", &domains, |
ce78df79 | 1064 | "ROOT_PATH", &lease->root_path, |
e1ea665e | 1065 | "ROUTES", &routes, |
e37f74a6 | 1066 | "CLIENTID", &client_id_hex, |
8eb9058d | 1067 | "TIMEZONE", &lease->timezone, |
e43a8393 | 1068 | "VENDOR_SPECIFIC", &vendor_specific_hex, |
0339cd77 LP |
1069 | "LIFETIME", &lifetime, |
1070 | "T1", &t1, | |
1071 | "T2", &t2, | |
a073309f AC |
1072 | "OPTION_224", &options[0], |
1073 | "OPTION_225", &options[1], | |
1074 | "OPTION_226", &options[2], | |
1075 | "OPTION_227", &options[3], | |
1076 | "OPTION_228", &options[4], | |
1077 | "OPTION_229", &options[5], | |
1078 | "OPTION_230", &options[6], | |
1079 | "OPTION_231", &options[7], | |
1080 | "OPTION_232", &options[8], | |
1081 | "OPTION_233", &options[9], | |
1082 | "OPTION_234", &options[10], | |
1083 | "OPTION_235", &options[11], | |
1084 | "OPTION_236", &options[12], | |
1085 | "OPTION_237", &options[13], | |
1086 | "OPTION_238", &options[14], | |
1087 | "OPTION_239", &options[15], | |
1088 | "OPTION_240", &options[16], | |
1089 | "OPTION_241", &options[17], | |
1090 | "OPTION_242", &options[18], | |
1091 | "OPTION_243", &options[19], | |
1092 | "OPTION_244", &options[20], | |
1093 | "OPTION_245", &options[21], | |
1094 | "OPTION_246", &options[22], | |
1095 | "OPTION_247", &options[23], | |
1096 | "OPTION_248", &options[24], | |
1097 | "OPTION_249", &options[25], | |
1098 | "OPTION_250", &options[26], | |
1099 | "OPTION_251", &options[27], | |
1100 | "OPTION_252", &options[28], | |
1101 | "OPTION_253", &options[29], | |
1102 | "OPTION_254", &options[30], | |
fe8db0c5 | 1103 | NULL); |
fe8db0c5 TG |
1104 | if (r < 0) |
1105 | return r; | |
1106 | ||
0339cd77 LP |
1107 | if (address) { |
1108 | r = inet_pton(AF_INET, address, &lease->address); | |
1109 | if (r <= 0) | |
e26ea7fc | 1110 | log_debug("Failed to parse address %s, ignoring.", address); |
0339cd77 | 1111 | } |
fe8db0c5 | 1112 | |
8ddbeaa2 | 1113 | if (router) { |
0339cd77 LP |
1114 | r = inet_pton(AF_INET, router, &lease->router); |
1115 | if (r <= 0) | |
e26ea7fc | 1116 | log_debug("Failed to parse router %s, ignoring.", router); |
8ddbeaa2 | 1117 | } |
fe8db0c5 | 1118 | |
0339cd77 LP |
1119 | if (netmask) { |
1120 | r = inet_pton(AF_INET, netmask, &lease->subnet_mask); | |
1121 | if (r <= 0) | |
e26ea7fc | 1122 | log_debug("Failed to parse netmask %s, ignoring.", netmask); |
0339cd77 LP |
1123 | else |
1124 | lease->have_subnet_mask = true; | |
1125 | } | |
fe8db0c5 | 1126 | |
0ad853bc | 1127 | if (server_address) { |
0339cd77 LP |
1128 | r = inet_pton(AF_INET, server_address, &lease->server_address); |
1129 | if (r <= 0) | |
e26ea7fc | 1130 | log_debug("Failed to parse server address %s, ignoring.", server_address); |
0ad853bc TG |
1131 | } |
1132 | ||
8e34a618 | 1133 | if (next_server) { |
0339cd77 LP |
1134 | r = inet_pton(AF_INET, next_server, &lease->next_server); |
1135 | if (r <= 0) | |
e26ea7fc | 1136 | log_debug("Failed to parse next server %s, ignoring.", next_server); |
0339cd77 | 1137 | } |
8e34a618 | 1138 | |
0339cd77 LP |
1139 | if (broadcast) { |
1140 | r = inet_pton(AF_INET, broadcast, &lease->broadcast); | |
1141 | if (r <= 0) | |
e26ea7fc | 1142 | log_debug("Failed to parse broadcast address %s, ignoring.", broadcast); |
0339cd77 LP |
1143 | else |
1144 | lease->have_broadcast = true; | |
8e34a618 TG |
1145 | } |
1146 | ||
109731eb | 1147 | if (dns) { |
a2ba62c7 | 1148 | r = deserialize_in_addrs(&lease->dns, dns); |
109731eb | 1149 | if (r < 0) |
0339cd77 LP |
1150 | log_debug_errno(r, "Failed to deserialize DNS servers %s, ignoring: %m", dns); |
1151 | else | |
1152 | lease->dns_size = r; | |
109731eb TG |
1153 | } |
1154 | ||
1155 | if (ntp) { | |
a2ba62c7 | 1156 | r = deserialize_in_addrs(&lease->ntp, ntp); |
109731eb | 1157 | if (r < 0) |
0339cd77 LP |
1158 | log_debug_errno(r, "Failed to deserialize NTP servers %s, ignoring: %m", ntp); |
1159 | else | |
1160 | lease->ntp_size = r; | |
109731eb TG |
1161 | } |
1162 | ||
fe8db0c5 | 1163 | if (mtu) { |
0339cd77 LP |
1164 | r = safe_atou16(mtu, &lease->mtu); |
1165 | if (r < 0) | |
1166 | log_debug_errno(r, "Failed to parse MTU %s, ignoring: %m", mtu); | |
fe8db0c5 TG |
1167 | } |
1168 | ||
b85bc551 DW |
1169 | if (domains) { |
1170 | _cleanup_strv_free_ char **a = NULL; | |
1171 | a = strv_split(domains, " "); | |
1172 | if (!a) | |
1173 | return -ENOMEM; | |
1174 | ||
1175 | if (!strv_isempty(a)) { | |
1176 | lease->search_domains = a; | |
1177 | a = NULL; | |
1178 | } | |
1179 | } | |
1180 | ||
e1ea665e | 1181 | if (routes) { |
0339cd77 LP |
1182 | r = deserialize_dhcp_routes( |
1183 | &lease->static_route, | |
1184 | &lease->static_route_size, | |
1185 | &lease->static_route_allocated, | |
1186 | routes); | |
1187 | if (r < 0) | |
1188 | log_debug_errno(r, "Failed to parse DHCP routes %s, ignoring: %m", routes); | |
1189 | } | |
1190 | ||
1191 | if (lifetime) { | |
1192 | r = safe_atou32(lifetime, &lease->lifetime); | |
1193 | if (r < 0) | |
1194 | log_debug_errno(r, "Failed to parse lifetime %s, ignoring: %m", lifetime); | |
1195 | } | |
1196 | ||
1197 | if (t1) { | |
1198 | r = safe_atou32(t1, &lease->t1); | |
1199 | if (r < 0) | |
1200 | log_debug_errno(r, "Failed to parse T1 %s, ignoring: %m", t1); | |
1201 | } | |
1202 | ||
1203 | if (t2) { | |
1204 | r = safe_atou32(t2, &lease->t2); | |
e1ea665e | 1205 | if (r < 0) |
0339cd77 | 1206 | log_debug_errno(r, "Failed to parse T2 %s, ignoring: %m", t2); |
e1ea665e EY |
1207 | } |
1208 | ||
e37f74a6 | 1209 | if (client_id_hex) { |
9b57d9ae | 1210 | r = deserialize_dhcp_option(&lease->client_id, &lease->client_id_len, client_id_hex); |
30494563 | 1211 | if (r < 0) |
0339cd77 | 1212 | log_debug_errno(r, "Failed to parse client ID %s, ignoring: %m", client_id_hex); |
e37f74a6 DW |
1213 | } |
1214 | ||
e43a8393 | 1215 | if (vendor_specific_hex) { |
9b57d9ae | 1216 | r = deserialize_dhcp_option(&lease->vendor_specific, &lease->vendor_specific_len, vendor_specific_hex); |
e43a8393 | 1217 | if (r < 0) |
0339cd77 | 1218 | log_debug_errno(r, "Failed to parse vendor specific data %s, ignoring: %m", vendor_specific_hex); |
e43a8393 BG |
1219 | } |
1220 | ||
22805d92 | 1221 | for (i = 0; i <= SD_DHCP_OPTION_PRIVATE_LAST - SD_DHCP_OPTION_PRIVATE_BASE; i++) { |
e4735228 | 1222 | _cleanup_free_ void *data = NULL; |
a073309f AC |
1223 | size_t len; |
1224 | ||
1225 | if (!options[i]) | |
1226 | continue; | |
1227 | ||
1228 | r = deserialize_dhcp_option(&data, &len, options[i]); | |
0339cd77 LP |
1229 | if (r < 0) { |
1230 | log_debug_errno(r, "Failed to parse private DHCP option %s, ignoring: %m", options[i]); | |
1231 | continue; | |
1232 | } | |
a073309f | 1233 | |
22805d92 | 1234 | r = dhcp_lease_insert_private_option(lease, SD_DHCP_OPTION_PRIVATE_BASE + i, data, len); |
626be147 | 1235 | if (r < 0) |
a073309f AC |
1236 | return r; |
1237 | } | |
1238 | ||
fe8db0c5 TG |
1239 | *ret = lease; |
1240 | lease = NULL; | |
1241 | ||
1242 | return 0; | |
1243 | } | |
9e64dd72 TG |
1244 | |
1245 | int dhcp_lease_set_default_subnet_mask(sd_dhcp_lease *lease) { | |
0339cd77 | 1246 | struct in_addr address, mask; |
df40eee8 | 1247 | int r; |
9e64dd72 TG |
1248 | |
1249 | assert(lease); | |
9e64dd72 | 1250 | |
0339cd77 LP |
1251 | if (lease->address == 0) |
1252 | return -ENODATA; | |
1253 | ||
df40eee8 | 1254 | address.s_addr = lease->address; |
9e64dd72 TG |
1255 | |
1256 | /* fall back to the default subnet masks based on address class */ | |
5a941f5f | 1257 | r = in4_addr_default_subnet_mask(&address, &mask); |
df40eee8 TG |
1258 | if (r < 0) |
1259 | return r; | |
9e64dd72 | 1260 | |
df40eee8 | 1261 | lease->subnet_mask = mask.s_addr; |
0339cd77 | 1262 | lease->have_subnet_mask = true; |
9e64dd72 TG |
1263 | |
1264 | return 0; | |
1265 | } | |
e37f74a6 | 1266 | |
0339cd77 | 1267 | int sd_dhcp_lease_get_client_id(sd_dhcp_lease *lease, const void **client_id, size_t *client_id_len) { |
e37f74a6 DW |
1268 | assert_return(lease, -EINVAL); |
1269 | assert_return(client_id, -EINVAL); | |
1270 | assert_return(client_id_len, -EINVAL); | |
1271 | ||
0339cd77 LP |
1272 | if (!lease->client_id) |
1273 | return -ENODATA; | |
1274 | ||
e37f74a6 DW |
1275 | *client_id = lease->client_id; |
1276 | *client_id_len = lease->client_id_len; | |
0339cd77 | 1277 | |
e37f74a6 DW |
1278 | return 0; |
1279 | } | |
1280 | ||
0339cd77 | 1281 | int dhcp_lease_set_client_id(sd_dhcp_lease *lease, const void *client_id, size_t client_id_len) { |
e37f74a6 | 1282 | assert_return(lease, -EINVAL); |
0339cd77 LP |
1283 | assert_return(client_id || client_id_len <= 0, -EINVAL); |
1284 | ||
1285 | if (client_id_len <= 0) | |
1286 | lease->client_id = mfree(lease->client_id); | |
1287 | else { | |
1288 | void *p; | |
e37f74a6 | 1289 | |
0339cd77 LP |
1290 | p = memdup(client_id, client_id_len); |
1291 | if (!p) | |
1292 | return -ENOMEM; | |
e37f74a6 | 1293 | |
0339cd77 LP |
1294 | free(lease->client_id); |
1295 | lease->client_id = p; | |
e37f74a6 DW |
1296 | lease->client_id_len = client_id_len; |
1297 | } | |
1298 | ||
1299 | return 0; | |
1300 | } | |
8eb9058d | 1301 | |
64d6c229 | 1302 | int sd_dhcp_lease_get_timezone(sd_dhcp_lease *lease, const char **tz) { |
8eb9058d | 1303 | assert_return(lease, -EINVAL); |
64d6c229 | 1304 | assert_return(tz, -EINVAL); |
8eb9058d LP |
1305 | |
1306 | if (!lease->timezone) | |
0339cd77 | 1307 | return -ENODATA; |
8eb9058d | 1308 | |
64d6c229 | 1309 | *tz = lease->timezone; |
8eb9058d LP |
1310 | return 0; |
1311 | } | |
f8693fc7 BG |
1312 | |
1313 | int sd_dhcp_route_get_destination(sd_dhcp_route *route, struct in_addr *destination) { | |
1314 | assert_return(route, -EINVAL); | |
1315 | assert_return(destination, -EINVAL); | |
1316 | ||
1317 | *destination = route->dst_addr; | |
1318 | return 0; | |
1319 | } | |
1320 | ||
1321 | int sd_dhcp_route_get_destination_prefix_length(sd_dhcp_route *route, uint8_t *length) { | |
1322 | assert_return(route, -EINVAL); | |
1323 | assert_return(length, -EINVAL); | |
1324 | ||
1325 | *length = route->dst_prefixlen; | |
1326 | return 0; | |
1327 | } | |
1328 | ||
1329 | int sd_dhcp_route_get_gateway(sd_dhcp_route *route, struct in_addr *gateway) { | |
1330 | assert_return(route, -EINVAL); | |
1331 | assert_return(gateway, -EINVAL); | |
1332 | ||
1333 | *gateway = route->gw_addr; | |
1334 | return 0; | |
1335 | } |