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Commit | Line | Data |
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a6cc569e TG |
1 | /*** |
2 | This file is part of systemd. | |
3 | ||
4 | Copyright (C) 2013 Intel Corporation. All rights reserved. | |
5 | Copyright (C) 2014 Tom Gundersen | |
6 | ||
7 | systemd is free software; you can redistribute it and/or modify it | |
8 | under the terms of the GNU Lesser General Public License as published by | |
9 | the Free Software Foundation; either version 2.1 of the License, or | |
10 | (at your option) any later version. | |
11 | ||
12 | systemd is distributed in the hope that it will be useful, but | |
13 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
15 | Lesser General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU Lesser General Public License | |
18 | along with systemd; If not, see <http://www.gnu.org/licenses/>. | |
19 | ***/ | |
20 | ||
07630cea | 21 | #include <arpa/inet.h> |
a6cc569e | 22 | #include <errno.h> |
a6cc569e | 23 | #include <stdio.h> |
07630cea LP |
24 | #include <stdlib.h> |
25 | #include <string.h> | |
26 | ||
27 | #include "sd-dhcp-lease.h" | |
a6cc569e | 28 | |
b5efdb8a | 29 | #include "alloc-util.h" |
07630cea LP |
30 | #include "dhcp-lease-internal.h" |
31 | #include "dhcp-protocol.h" | |
32 | #include "dns-domain.h" | |
3ffd4af2 | 33 | #include "fd-util.h" |
fe8db0c5 | 34 | #include "fileio.h" |
b11d6a7b | 35 | #include "hexdecoct.h" |
958b66ea | 36 | #include "hostname-util.h" |
07630cea | 37 | #include "in-addr-util.h" |
0339cd77 | 38 | #include "network-internal.h" |
6bedfcbb | 39 | #include "parse-util.h" |
d054f0a4 | 40 | #include "stdio-util.h" |
b11d6a7b | 41 | #include "string-util.h" |
07630cea | 42 | #include "unaligned.h" |
a6cc569e TG |
43 | |
44 | int sd_dhcp_lease_get_address(sd_dhcp_lease *lease, struct in_addr *addr) { | |
45 | assert_return(lease, -EINVAL); | |
46 | assert_return(addr, -EINVAL); | |
47 | ||
0339cd77 LP |
48 | if (lease->address == 0) |
49 | return -ENODATA; | |
50 | ||
a6cc569e | 51 | addr->s_addr = lease->address; |
0339cd77 LP |
52 | return 0; |
53 | } | |
a6cc569e | 54 | |
0339cd77 LP |
55 | int sd_dhcp_lease_get_broadcast(sd_dhcp_lease *lease, struct in_addr *addr) { |
56 | assert_return(lease, -EINVAL); | |
57 | assert_return(addr, -EINVAL); | |
58 | ||
59 | if (!lease->have_broadcast) | |
60 | return -ENODATA; | |
61 | ||
62 | addr->s_addr = lease->broadcast; | |
a6cc569e TG |
63 | return 0; |
64 | } | |
65 | ||
68ceb9df PF |
66 | int sd_dhcp_lease_get_lifetime(sd_dhcp_lease *lease, uint32_t *lifetime) { |
67 | assert_return(lease, -EINVAL); | |
1c6eb4e3 | 68 | assert_return(lifetime, -EINVAL); |
68ceb9df | 69 | |
0339cd77 LP |
70 | if (lease->lifetime <= 0) |
71 | return -ENODATA; | |
72 | ||
68ceb9df | 73 | *lifetime = lease->lifetime; |
0339cd77 LP |
74 | return 0; |
75 | } | |
68ceb9df | 76 | |
0339cd77 LP |
77 | int sd_dhcp_lease_get_t1(sd_dhcp_lease *lease, uint32_t *t1) { |
78 | assert_return(lease, -EINVAL); | |
79 | assert_return(t1, -EINVAL); | |
80 | ||
81 | if (lease->t1 <= 0) | |
82 | return -ENODATA; | |
83 | ||
84 | *t1 = lease->t1; | |
85 | return 0; | |
86 | } | |
87 | ||
88 | int sd_dhcp_lease_get_t2(sd_dhcp_lease *lease, uint32_t *t2) { | |
89 | assert_return(lease, -EINVAL); | |
90 | assert_return(t2, -EINVAL); | |
91 | ||
92 | if (lease->t2 <= 0) | |
93 | return -ENODATA; | |
94 | ||
95 | *t2 = lease->t2; | |
68ceb9df PF |
96 | return 0; |
97 | } | |
98 | ||
a6cc569e TG |
99 | int sd_dhcp_lease_get_mtu(sd_dhcp_lease *lease, uint16_t *mtu) { |
100 | assert_return(lease, -EINVAL); | |
101 | assert_return(mtu, -EINVAL); | |
102 | ||
0339cd77 LP |
103 | if (lease->mtu <= 0) |
104 | return -ENODATA; | |
a6cc569e | 105 | |
0339cd77 | 106 | *mtu = lease->mtu; |
a6cc569e TG |
107 | return 0; |
108 | } | |
109 | ||
a2ba62c7 | 110 | int sd_dhcp_lease_get_dns(sd_dhcp_lease *lease, const struct in_addr **addr) { |
a6cc569e TG |
111 | assert_return(lease, -EINVAL); |
112 | assert_return(addr, -EINVAL); | |
a6cc569e | 113 | |
0339cd77 LP |
114 | if (lease->dns_size <= 0) |
115 | return -ENODATA; | |
a6cc569e | 116 | |
0339cd77 LP |
117 | *addr = lease->dns; |
118 | return (int) lease->dns_size; | |
a6cc569e TG |
119 | } |
120 | ||
a2ba62c7 | 121 | int sd_dhcp_lease_get_ntp(sd_dhcp_lease *lease, const struct in_addr **addr) { |
46844696 TG |
122 | assert_return(lease, -EINVAL); |
123 | assert_return(addr, -EINVAL); | |
46844696 | 124 | |
0339cd77 LP |
125 | if (lease->ntp_size <= 0) |
126 | return -ENODATA; | |
46844696 | 127 | |
0339cd77 LP |
128 | *addr = lease->ntp; |
129 | return (int) lease->ntp_size; | |
46844696 TG |
130 | } |
131 | ||
a6cc569e TG |
132 | int sd_dhcp_lease_get_domainname(sd_dhcp_lease *lease, const char **domainname) { |
133 | assert_return(lease, -EINVAL); | |
134 | assert_return(domainname, -EINVAL); | |
135 | ||
0339cd77 LP |
136 | if (!lease->domainname) |
137 | return -ENODATA; | |
a6cc569e | 138 | |
0339cd77 | 139 | *domainname = lease->domainname; |
a6cc569e TG |
140 | return 0; |
141 | } | |
142 | ||
143 | int sd_dhcp_lease_get_hostname(sd_dhcp_lease *lease, const char **hostname) { | |
144 | assert_return(lease, -EINVAL); | |
145 | assert_return(hostname, -EINVAL); | |
146 | ||
0339cd77 LP |
147 | if (!lease->hostname) |
148 | return -ENODATA; | |
a6cc569e | 149 | |
0339cd77 | 150 | *hostname = lease->hostname; |
a6cc569e TG |
151 | return 0; |
152 | } | |
153 | ||
ce78df79 TG |
154 | int sd_dhcp_lease_get_root_path(sd_dhcp_lease *lease, const char **root_path) { |
155 | assert_return(lease, -EINVAL); | |
156 | assert_return(root_path, -EINVAL); | |
157 | ||
0339cd77 LP |
158 | if (!lease->root_path) |
159 | return -ENODATA; | |
ce78df79 | 160 | |
0339cd77 | 161 | *root_path = lease->root_path; |
ce78df79 TG |
162 | return 0; |
163 | } | |
164 | ||
a6cc569e TG |
165 | int sd_dhcp_lease_get_router(sd_dhcp_lease *lease, struct in_addr *addr) { |
166 | assert_return(lease, -EINVAL); | |
167 | assert_return(addr, -EINVAL); | |
168 | ||
0339cd77 LP |
169 | if (lease->router == 0) |
170 | return -ENODATA; | |
a6cc569e | 171 | |
0339cd77 | 172 | addr->s_addr = lease->router; |
a6cc569e TG |
173 | return 0; |
174 | } | |
175 | ||
176 | int sd_dhcp_lease_get_netmask(sd_dhcp_lease *lease, struct in_addr *addr) { | |
177 | assert_return(lease, -EINVAL); | |
178 | assert_return(addr, -EINVAL); | |
179 | ||
0339cd77 LP |
180 | if (!lease->have_subnet_mask) |
181 | return -ENODATA; | |
a6cc569e | 182 | |
0339cd77 | 183 | addr->s_addr = lease->subnet_mask; |
a6cc569e TG |
184 | return 0; |
185 | } | |
186 | ||
0ad853bc TG |
187 | int sd_dhcp_lease_get_server_identifier(sd_dhcp_lease *lease, struct in_addr *addr) { |
188 | assert_return(lease, -EINVAL); | |
189 | assert_return(addr, -EINVAL); | |
190 | ||
0339cd77 LP |
191 | if (lease->server_address == 0) |
192 | return -ENODATA; | |
0ad853bc | 193 | |
0339cd77 | 194 | addr->s_addr = lease->server_address; |
0ad853bc TG |
195 | return 0; |
196 | } | |
197 | ||
8e34a618 TG |
198 | int sd_dhcp_lease_get_next_server(sd_dhcp_lease *lease, struct in_addr *addr) { |
199 | assert_return(lease, -EINVAL); | |
200 | assert_return(addr, -EINVAL); | |
201 | ||
0339cd77 LP |
202 | if (lease->next_server == 0) |
203 | return -ENODATA; | |
8e34a618 | 204 | |
0339cd77 | 205 | addr->s_addr = lease->next_server; |
8e34a618 TG |
206 | return 0; |
207 | } | |
208 | ||
f8693fc7 BG |
209 | /* |
210 | * The returned routes array must be freed by the caller. | |
211 | * Route objects have the same lifetime of the lease and must not be freed. | |
212 | */ | |
213 | int sd_dhcp_lease_get_routes(sd_dhcp_lease *lease, sd_dhcp_route ***routes) { | |
214 | sd_dhcp_route **ret; | |
215 | unsigned i; | |
216 | ||
e1ea665e EY |
217 | assert_return(lease, -EINVAL); |
218 | assert_return(routes, -EINVAL); | |
e1ea665e | 219 | |
0339cd77 LP |
220 | if (lease->static_route_size <= 0) |
221 | return -ENODATA; | |
e1ea665e | 222 | |
f8693fc7 BG |
223 | ret = new(sd_dhcp_route *, lease->static_route_size); |
224 | if (!ret) | |
225 | return -ENOMEM; | |
226 | ||
227 | for (i = 0; i < lease->static_route_size; i++) | |
228 | ret[i] = &lease->static_route[i]; | |
229 | ||
230 | *routes = ret; | |
0339cd77 | 231 | return (int) lease->static_route_size; |
e1ea665e EY |
232 | } |
233 | ||
b85bc551 DW |
234 | int sd_dhcp_lease_get_search_domains(sd_dhcp_lease *lease, char ***domains) { |
235 | unsigned r; | |
236 | ||
237 | assert_return(lease, -EINVAL); | |
238 | assert_return(domains, -EINVAL); | |
239 | ||
240 | r = strv_length(lease->search_domains); | |
241 | if (r > 0) { | |
242 | *domains = lease->search_domains; | |
243 | return (int) r; | |
244 | } | |
245 | ||
246 | return -ENODATA; | |
247 | } | |
248 | ||
0339cd77 | 249 | int sd_dhcp_lease_get_vendor_specific(sd_dhcp_lease *lease, const void **data, size_t *data_len) { |
e43a8393 BG |
250 | assert_return(lease, -EINVAL); |
251 | assert_return(data, -EINVAL); | |
252 | assert_return(data_len, -EINVAL); | |
253 | ||
0339cd77 LP |
254 | if (lease->vendor_specific_len <= 0) |
255 | return -ENODATA; | |
e43a8393 BG |
256 | |
257 | *data = lease->vendor_specific; | |
258 | *data_len = lease->vendor_specific_len; | |
e43a8393 BG |
259 | return 0; |
260 | } | |
261 | ||
a6cc569e | 262 | sd_dhcp_lease *sd_dhcp_lease_ref(sd_dhcp_lease *lease) { |
3733eec3 LP |
263 | |
264 | if (!lease) | |
265 | return NULL; | |
266 | ||
267 | assert(lease->n_ref >= 1); | |
268 | lease->n_ref++; | |
a6cc569e TG |
269 | |
270 | return lease; | |
271 | } | |
272 | ||
273 | sd_dhcp_lease *sd_dhcp_lease_unref(sd_dhcp_lease *lease) { | |
7e753d9d | 274 | |
3733eec3 LP |
275 | if (!lease) |
276 | return NULL; | |
7e753d9d | 277 | |
3733eec3 LP |
278 | assert(lease->n_ref >= 1); |
279 | lease->n_ref--; | |
280 | ||
281 | if (lease->n_ref > 0) | |
282 | return NULL; | |
283 | ||
284 | while (lease->private_options) { | |
285 | struct sd_dhcp_raw_option *option = lease->private_options; | |
286 | ||
287 | LIST_REMOVE(options, lease->private_options, option); | |
288 | ||
289 | free(option->data); | |
290 | free(option); | |
a6cc569e TG |
291 | } |
292 | ||
3733eec3 LP |
293 | free(lease->hostname); |
294 | free(lease->domainname); | |
295 | free(lease->dns); | |
296 | free(lease->ntp); | |
297 | free(lease->static_route); | |
298 | free(lease->client_id); | |
299 | free(lease->vendor_specific); | |
b85bc551 | 300 | strv_free(lease->search_domains); |
6b430fdb | 301 | return mfree(lease); |
a6cc569e TG |
302 | } |
303 | ||
0339cd77 | 304 | static int lease_parse_u32(const uint8_t *option, size_t len, uint32_t *ret, uint32_t min) { |
e140ae58 TG |
305 | assert(option); |
306 | assert(ret); | |
307 | ||
0339cd77 LP |
308 | if (len != 4) |
309 | return -EINVAL; | |
e140ae58 | 310 | |
0339cd77 LP |
311 | *ret = unaligned_read_be32((be32_t*) option); |
312 | if (*ret < min) | |
313 | *ret = min; | |
e140ae58 | 314 | |
0339cd77 | 315 | return 0; |
e140ae58 TG |
316 | } |
317 | ||
0339cd77 | 318 | static int lease_parse_u16(const uint8_t *option, size_t len, uint16_t *ret, uint16_t min) { |
e140ae58 TG |
319 | assert(option); |
320 | assert(ret); | |
321 | ||
0339cd77 LP |
322 | if (len != 2) |
323 | return -EINVAL; | |
e140ae58 | 324 | |
0339cd77 LP |
325 | *ret = unaligned_read_be16((be16_t*) option); |
326 | if (*ret < min) | |
327 | *ret = min; | |
f5c0c00f | 328 | |
0339cd77 | 329 | return 0; |
f5c0c00f TG |
330 | } |
331 | ||
0339cd77 | 332 | static int lease_parse_be32(const uint8_t *option, size_t len, be32_t *ret) { |
f5c0c00f TG |
333 | assert(option); |
334 | assert(ret); | |
335 | ||
0339cd77 LP |
336 | if (len != 4) |
337 | return -EINVAL; | |
f5c0c00f | 338 | |
0339cd77 LP |
339 | memcpy(ret, option, 4); |
340 | return 0; | |
f5c0c00f TG |
341 | } |
342 | ||
e140ae58 TG |
343 | static int lease_parse_string(const uint8_t *option, size_t len, char **ret) { |
344 | assert(option); | |
345 | assert(ret); | |
346 | ||
0339cd77 LP |
347 | if (len <= 0) |
348 | *ret = mfree(*ret); | |
349 | else { | |
e140ae58 TG |
350 | char *string; |
351 | ||
e989fd9b LP |
352 | /* |
353 | * One trailing NUL byte is OK, we don't mind. See: | |
354 | * https://github.com/systemd/systemd/issues/1337 | |
355 | */ | |
356 | if (memchr(option, 0, len - 1)) | |
43f447b1 LP |
357 | return -EINVAL; |
358 | ||
e989fd9b | 359 | string = strndup((const char *) option, len); |
e140ae58 | 360 | if (!string) |
43f447b1 | 361 | return -ENOMEM; |
e140ae58 TG |
362 | |
363 | free(*ret); | |
364 | *ret = string; | |
0339cd77 | 365 | } |
e140ae58 TG |
366 | |
367 | return 0; | |
368 | } | |
369 | ||
978c6477 LP |
370 | static int lease_parse_domain(const uint8_t *option, size_t len, char **ret) { |
371 | _cleanup_free_ char *name = NULL, *normalized = NULL; | |
372 | int r; | |
373 | ||
374 | assert(option); | |
375 | assert(ret); | |
376 | ||
377 | r = lease_parse_string(option, len, &name); | |
378 | if (r < 0) | |
379 | return r; | |
380 | if (!name) { | |
381 | *ret = mfree(*ret); | |
382 | return 0; | |
383 | } | |
384 | ||
385 | r = dns_name_normalize(name, &normalized); | |
386 | if (r < 0) | |
387 | return r; | |
388 | ||
389 | if (is_localhost(normalized)) | |
390 | return -EINVAL; | |
391 | ||
392 | if (dns_name_is_root(normalized)) | |
393 | return -EINVAL; | |
394 | ||
395 | free(*ret); | |
396 | *ret = normalized; | |
397 | normalized = NULL; | |
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 | |
1caa12d0 TG |
474 | r = in_addr_default_prefixlen((struct in_addr*) option, &route->dst_prefixlen); |
475 | if (r < 0) { | |
0339cd77 | 476 | log_debug("Failed to determine destination prefix length from class based IP, ignoring"); |
e1ea665e EY |
477 | continue; |
478 | } | |
479 | ||
0339cd77 | 480 | assert_se(lease_parse_be32(option, 4, &addr.s_addr) >= 0); |
e1ea665e EY |
481 | route->dst_addr = inet_makeaddr(inet_netof(addr), 0); |
482 | option += 4; | |
483 | ||
0339cd77 | 484 | assert_se(lease_parse_be32(option, 4, &route->gw_addr.s_addr) >= 0); |
e1ea665e EY |
485 | option += 4; |
486 | ||
487 | len -= 8; | |
488 | (*routes_size)++; | |
489 | } | |
490 | ||
491 | return 0; | |
492 | } | |
493 | ||
494 | /* parses RFC3442 Classless Static Route Option */ | |
0339cd77 LP |
495 | static int lease_parse_classless_routes( |
496 | const uint8_t *option, size_t len, | |
497 | struct sd_dhcp_route **routes, size_t *routes_size, size_t *routes_allocated) { | |
e1ea665e | 498 | |
0339cd77 | 499 | assert(option || len <= 0); |
e1ea665e EY |
500 | assert(routes); |
501 | assert(routes_size); | |
502 | assert(routes_allocated); | |
503 | ||
0339cd77 LP |
504 | if (len <= 0) |
505 | return 0; | |
506 | ||
e1ea665e EY |
507 | /* option format: (subnet-mask-width significant-subnet-octets gateway-ip)* */ |
508 | ||
509 | while (len > 0) { | |
510 | uint8_t dst_octets; | |
511 | struct sd_dhcp_route *route; | |
512 | ||
513 | if (!GREEDY_REALLOC(*routes, *routes_allocated, *routes_size + 1)) | |
0339cd77 | 514 | return -ENOMEM; |
e1ea665e EY |
515 | |
516 | route = *routes + *routes_size; | |
517 | ||
518 | dst_octets = (*option == 0 ? 0 : ((*option - 1) / 8) + 1); | |
519 | route->dst_prefixlen = *option; | |
520 | option++; | |
521 | len--; | |
522 | ||
523 | /* can't have more than 4 octets in IPv4 */ | |
524 | if (dst_octets > 4 || len < dst_octets) | |
525 | return -EINVAL; | |
526 | ||
527 | route->dst_addr.s_addr = 0; | |
528 | memcpy(&route->dst_addr.s_addr, option, dst_octets); | |
529 | option += dst_octets; | |
530 | len -= dst_octets; | |
531 | ||
532 | if (len < 4) | |
533 | return -EINVAL; | |
534 | ||
b14fff6e | 535 | assert_se(lease_parse_be32(option, 4, &route->gw_addr.s_addr) >= 0); |
e1ea665e EY |
536 | option += 4; |
537 | len -= 4; | |
538 | ||
539 | (*routes_size)++; | |
540 | } | |
541 | ||
542 | return 0; | |
543 | } | |
544 | ||
e4735228 | 545 | int dhcp_lease_parse_options(uint8_t code, uint8_t len, const void *option, void *userdata) { |
2d03c0b8 | 546 | sd_dhcp_lease *lease = userdata; |
e140ae58 TG |
547 | int r; |
548 | ||
549 | assert(lease); | |
a6cc569e TG |
550 | |
551 | switch(code) { | |
552 | ||
22805d92 | 553 | case SD_DHCP_OPTION_IP_ADDRESS_LEASE_TIME: |
0339cd77 LP |
554 | r = lease_parse_u32(option, len, &lease->lifetime, 1); |
555 | if (r < 0) | |
556 | log_debug_errno(r, "Failed to parse lease time, ignoring: %m"); | |
557 | ||
a6cc569e TG |
558 | break; |
559 | ||
22805d92 | 560 | case SD_DHCP_OPTION_SERVER_IDENTIFIER: |
0339cd77 LP |
561 | r = lease_parse_be32(option, len, &lease->server_address); |
562 | if (r < 0) | |
563 | log_debug_errno(r, "Failed to parse server identifier, ignoring: %m"); | |
564 | ||
a6cc569e TG |
565 | break; |
566 | ||
22805d92 | 567 | case SD_DHCP_OPTION_SUBNET_MASK: |
0339cd77 LP |
568 | r = lease_parse_be32(option, len, &lease->subnet_mask); |
569 | if (r < 0) | |
570 | log_debug_errno(r, "Failed to parse subnet mask, ignoring: %m"); | |
571 | else | |
572 | lease->have_subnet_mask = true; | |
a6cc569e TG |
573 | break; |
574 | ||
22805d92 | 575 | case SD_DHCP_OPTION_BROADCAST: |
0339cd77 LP |
576 | r = lease_parse_be32(option, len, &lease->broadcast); |
577 | if (r < 0) | |
578 | log_debug_errno(r, "Failed to parse broadcast address, ignoring: %m"); | |
579 | else | |
580 | lease->have_broadcast = true; | |
f5c0c00f TG |
581 | break; |
582 | ||
22805d92 | 583 | case SD_DHCP_OPTION_ROUTER: |
0339cd77 LP |
584 | if (len >= 4) { |
585 | r = lease_parse_be32(option, 4, &lease->router); | |
586 | if (r < 0) | |
587 | log_debug_errno(r, "Failed to parse router address, ignoring: %m"); | |
588 | } | |
a6cc569e TG |
589 | break; |
590 | ||
22805d92 | 591 | case SD_DHCP_OPTION_DOMAIN_NAME_SERVER: |
0339cd77 LP |
592 | r = lease_parse_in_addrs(option, len, &lease->dns, &lease->dns_size); |
593 | if (r < 0) | |
594 | log_debug_errno(r, "Failed to parse DNS server, ignoring: %m"); | |
a6cc569e TG |
595 | break; |
596 | ||
22805d92 | 597 | case SD_DHCP_OPTION_NTP_SERVER: |
0339cd77 LP |
598 | r = lease_parse_in_addrs(option, len, &lease->ntp, &lease->ntp_size); |
599 | if (r < 0) | |
600 | log_debug_errno(r, "Failed to parse NTP server, ignoring: %m"); | |
f5c0c00f TG |
601 | break; |
602 | ||
22805d92 | 603 | case SD_DHCP_OPTION_STATIC_ROUTE: |
0339cd77 LP |
604 | r = lease_parse_routes(option, len, &lease->static_route, &lease->static_route_size, &lease->static_route_allocated); |
605 | if (r < 0) | |
606 | log_debug_errno(r, "Failed to parse static routes, ignoring: %m"); | |
f5c0c00f TG |
607 | break; |
608 | ||
22805d92 | 609 | case SD_DHCP_OPTION_INTERFACE_MTU: |
0339cd77 LP |
610 | r = lease_parse_u16(option, len, &lease->mtu, 68); |
611 | if (r < 0) | |
612 | log_debug_errno(r, "Failed to parse MTU, ignoring: %m"); | |
955d99ed | 613 | if (lease->mtu < DHCP_DEFAULT_MIN_SIZE) { |
4dd53da9 | 614 | log_debug("MTU value of %" PRIu16 " too small. Using default MTU value of %d instead.", lease->mtu, DHCP_DEFAULT_MIN_SIZE); |
955d99ed MG |
615 | lease->mtu = DHCP_DEFAULT_MIN_SIZE; |
616 | } | |
617 | ||
f5c0c00f TG |
618 | break; |
619 | ||
978c6477 LP |
620 | case SD_DHCP_OPTION_DOMAIN_NAME: |
621 | r = lease_parse_domain(option, len, &lease->domainname); | |
0339cd77 LP |
622 | if (r < 0) { |
623 | log_debug_errno(r, "Failed to parse domain name, ignoring: %m"); | |
624 | return 0; | |
625 | } | |
a6cc569e | 626 | |
784d9b9c | 627 | break; |
784d9b9c | 628 | |
b85bc551 DW |
629 | case SD_DHCP_OPTION_DOMAIN_SEARCH_LIST: |
630 | r = dhcp_lease_parse_search_domains(option, len, &lease->search_domains); | |
631 | if (r < 0) | |
632 | log_debug_errno(r, "Failed to parse Domain Search List, ignoring: %m"); | |
633 | break; | |
634 | ||
978c6477 LP |
635 | case SD_DHCP_OPTION_HOST_NAME: |
636 | r = lease_parse_domain(option, len, &lease->hostname); | |
0339cd77 LP |
637 | if (r < 0) { |
638 | log_debug_errno(r, "Failed to parse host name, ignoring: %m"); | |
639 | return 0; | |
640 | } | |
a6cc569e | 641 | |
784d9b9c | 642 | break; |
ce78df79 | 643 | |
22805d92 | 644 | case SD_DHCP_OPTION_ROOT_PATH: |
0339cd77 LP |
645 | r = lease_parse_string(option, len, &lease->root_path); |
646 | if (r < 0) | |
647 | log_debug_errno(r, "Failed to parse root path, ignoring: %m"); | |
648 | break; | |
ce78df79 | 649 | |
22805d92 | 650 | case SD_DHCP_OPTION_RENEWAL_T1_TIME: |
0339cd77 LP |
651 | r = lease_parse_u32(option, len, &lease->t1, 1); |
652 | if (r < 0) | |
653 | log_debug_errno(r, "Failed to parse T1 time, ignoring: %m"); | |
a6cc569e TG |
654 | break; |
655 | ||
22805d92 | 656 | case SD_DHCP_OPTION_REBINDING_T2_TIME: |
0339cd77 LP |
657 | r = lease_parse_u32(option, len, &lease->t2, 1); |
658 | if (r < 0) | |
659 | log_debug_errno(r, "Failed to parse T2 time, ignoring: %m"); | |
a6cc569e | 660 | break; |
e1ea665e | 661 | |
22805d92 | 662 | case SD_DHCP_OPTION_CLASSLESS_STATIC_ROUTE: |
0339cd77 | 663 | r = lease_parse_classless_routes( |
2d03c0b8 LP |
664 | option, len, |
665 | &lease->static_route, | |
666 | &lease->static_route_size, | |
667 | &lease->static_route_allocated); | |
0339cd77 LP |
668 | if (r < 0) |
669 | log_debug_errno(r, "Failed to parse classless routes, ignoring: %m"); | |
670 | break; | |
e43a8393 | 671 | |
22805d92 | 672 | case SD_DHCP_OPTION_NEW_TZDB_TIMEZONE: { |
8eb9058d LP |
673 | _cleanup_free_ char *tz = NULL; |
674 | ||
675 | r = lease_parse_string(option, len, &tz); | |
0339cd77 LP |
676 | if (r < 0) { |
677 | log_debug_errno(r, "Failed to parse timezone option, ignoring: %m"); | |
678 | return 0; | |
679 | } | |
8eb9058d | 680 | |
0339cd77 LP |
681 | if (!timezone_is_valid(tz)) { |
682 | log_debug_errno(r, "Timezone is not valid, ignoring: %m"); | |
683 | return 0; | |
684 | } | |
8eb9058d LP |
685 | |
686 | free(lease->timezone); | |
687 | lease->timezone = tz; | |
688 | tz = NULL; | |
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 | ||
810 | *domains = names; | |
811 | names = NULL; | |
812 | ||
813 | return cnt; | |
814 | } | |
815 | ||
0339cd77 | 816 | int dhcp_lease_insert_private_option(sd_dhcp_lease *lease, uint8_t tag, const void *data, uint8_t len) { |
7e753d9d AC |
817 | struct sd_dhcp_raw_option *cur, *option; |
818 | ||
0339cd77 LP |
819 | assert(lease); |
820 | ||
7e753d9d AC |
821 | LIST_FOREACH(options, cur, lease->private_options) { |
822 | if (tag < cur->tag) | |
823 | break; | |
0339cd77 LP |
824 | if (tag == cur->tag) { |
825 | log_debug("Ignoring duplicate option, tagged %i.", tag); | |
7e753d9d AC |
826 | return 0; |
827 | } | |
828 | } | |
829 | ||
830 | option = new(struct sd_dhcp_raw_option, 1); | |
831 | if (!option) | |
832 | return -ENOMEM; | |
833 | ||
834 | option->tag = tag; | |
835 | option->length = len; | |
836 | option->data = memdup(data, len); | |
837 | if (!option->data) { | |
838 | free(option); | |
839 | return -ENOMEM; | |
840 | } | |
841 | ||
842 | LIST_INSERT_BEFORE(options, lease->private_options, cur, option); | |
7e753d9d AC |
843 | return 0; |
844 | } | |
845 | ||
a6cc569e | 846 | int dhcp_lease_new(sd_dhcp_lease **ret) { |
6e00a806 | 847 | sd_dhcp_lease *lease; |
a6cc569e TG |
848 | |
849 | lease = new0(sd_dhcp_lease, 1); | |
850 | if (!lease) | |
851 | return -ENOMEM; | |
852 | ||
8ddbeaa2 | 853 | lease->router = INADDR_ANY; |
3733eec3 | 854 | lease->n_ref = 1; |
a6cc569e TG |
855 | |
856 | *ret = lease; | |
a6cc569e TG |
857 | return 0; |
858 | } | |
fe8db0c5 | 859 | |
bd91b83e | 860 | int dhcp_lease_save(sd_dhcp_lease *lease, const char *lease_file) { |
fe8db0c5 TG |
861 | _cleanup_free_ char *temp_path = NULL; |
862 | _cleanup_fclose_ FILE *f = NULL; | |
a073309f | 863 | struct sd_dhcp_raw_option *option; |
fe8db0c5 | 864 | struct in_addr address; |
a2ba62c7 | 865 | const struct in_addr *addresses; |
e4735228 | 866 | const void *client_id, *data; |
e43a8393 | 867 | size_t client_id_len, data_len; |
fe8db0c5 TG |
868 | const char *string; |
869 | uint16_t mtu; | |
f8693fc7 | 870 | _cleanup_free_ sd_dhcp_route **routes = NULL; |
b85bc551 | 871 | char **search_domains = NULL; |
0339cd77 | 872 | uint32_t t1, t2, lifetime; |
fe8db0c5 TG |
873 | int r; |
874 | ||
875 | assert(lease); | |
876 | assert(lease_file); | |
877 | ||
fe8db0c5 TG |
878 | r = fopen_temporary(lease_file, &f, &temp_path); |
879 | if (r < 0) | |
dacd6cee | 880 | goto fail; |
fe8db0c5 TG |
881 | |
882 | fchmod(fileno(f), 0644); | |
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) { | |
4b61c875 | 929 | fputs_unlocked("DNS=", f); |
b0e39c82 | 930 | serialize_in_addrs(f, addresses, r); |
4b61c875 | 931 | fputs_unlocked("\n", f); |
0339cd77 | 932 | } |
109731eb | 933 | |
a2ba62c7 | 934 | r = sd_dhcp_lease_get_ntp(lease, &addresses); |
0339cd77 | 935 | if (r > 0) { |
4b61c875 | 936 | fputs_unlocked("NTP=", f); |
b0e39c82 | 937 | serialize_in_addrs(f, addresses, r); |
4b61c875 | 938 | fputs_unlocked("\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) { | |
4b61c875 | 947 | fputs_unlocked("DOMAIN_SEARCH_LIST=", f); |
b85bc551 | 948 | fputstrv(f, search_domains, NULL, NULL); |
4b61c875 | 949 | fputs_unlocked("\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) { |
30afef87 | 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 */ | |
df40eee8 TG |
1256 | r = in_addr_default_subnet_mask(&address, &mask); |
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 | } |