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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 | |
a6cc569e TG |
7 | ***/ |
8 | ||
07630cea | 9 | #include <arpa/inet.h> |
a6cc569e | 10 | #include <errno.h> |
a6cc569e | 11 | #include <stdio.h> |
0d536673 | 12 | #include <stdio_ext.h> |
07630cea LP |
13 | #include <stdlib.h> |
14 | #include <string.h> | |
15 | ||
16 | #include "sd-dhcp-lease.h" | |
a6cc569e | 17 | |
b5efdb8a | 18 | #include "alloc-util.h" |
07630cea LP |
19 | #include "dhcp-lease-internal.h" |
20 | #include "dhcp-protocol.h" | |
21 | #include "dns-domain.h" | |
3ffd4af2 | 22 | #include "fd-util.h" |
fe8db0c5 | 23 | #include "fileio.h" |
b11d6a7b | 24 | #include "hexdecoct.h" |
958b66ea | 25 | #include "hostname-util.h" |
07630cea | 26 | #include "in-addr-util.h" |
0339cd77 | 27 | #include "network-internal.h" |
6bedfcbb | 28 | #include "parse-util.h" |
d054f0a4 | 29 | #include "stdio-util.h" |
b11d6a7b | 30 | #include "string-util.h" |
07630cea | 31 | #include "unaligned.h" |
a6cc569e TG |
32 | |
33 | int sd_dhcp_lease_get_address(sd_dhcp_lease *lease, struct in_addr *addr) { | |
34 | assert_return(lease, -EINVAL); | |
35 | assert_return(addr, -EINVAL); | |
36 | ||
0339cd77 LP |
37 | if (lease->address == 0) |
38 | return -ENODATA; | |
39 | ||
a6cc569e | 40 | addr->s_addr = lease->address; |
0339cd77 LP |
41 | return 0; |
42 | } | |
a6cc569e | 43 | |
0339cd77 LP |
44 | int sd_dhcp_lease_get_broadcast(sd_dhcp_lease *lease, struct in_addr *addr) { |
45 | assert_return(lease, -EINVAL); | |
46 | assert_return(addr, -EINVAL); | |
47 | ||
48 | if (!lease->have_broadcast) | |
49 | return -ENODATA; | |
50 | ||
51 | addr->s_addr = lease->broadcast; | |
a6cc569e TG |
52 | return 0; |
53 | } | |
54 | ||
68ceb9df PF |
55 | int sd_dhcp_lease_get_lifetime(sd_dhcp_lease *lease, uint32_t *lifetime) { |
56 | assert_return(lease, -EINVAL); | |
1c6eb4e3 | 57 | assert_return(lifetime, -EINVAL); |
68ceb9df | 58 | |
0339cd77 LP |
59 | if (lease->lifetime <= 0) |
60 | return -ENODATA; | |
61 | ||
68ceb9df | 62 | *lifetime = lease->lifetime; |
0339cd77 LP |
63 | return 0; |
64 | } | |
68ceb9df | 65 | |
0339cd77 LP |
66 | int sd_dhcp_lease_get_t1(sd_dhcp_lease *lease, uint32_t *t1) { |
67 | assert_return(lease, -EINVAL); | |
68 | assert_return(t1, -EINVAL); | |
69 | ||
70 | if (lease->t1 <= 0) | |
71 | return -ENODATA; | |
72 | ||
73 | *t1 = lease->t1; | |
74 | return 0; | |
75 | } | |
76 | ||
77 | int sd_dhcp_lease_get_t2(sd_dhcp_lease *lease, uint32_t *t2) { | |
78 | assert_return(lease, -EINVAL); | |
79 | assert_return(t2, -EINVAL); | |
80 | ||
81 | if (lease->t2 <= 0) | |
82 | return -ENODATA; | |
83 | ||
84 | *t2 = lease->t2; | |
68ceb9df PF |
85 | return 0; |
86 | } | |
87 | ||
a6cc569e TG |
88 | int sd_dhcp_lease_get_mtu(sd_dhcp_lease *lease, uint16_t *mtu) { |
89 | assert_return(lease, -EINVAL); | |
90 | assert_return(mtu, -EINVAL); | |
91 | ||
0339cd77 LP |
92 | if (lease->mtu <= 0) |
93 | return -ENODATA; | |
a6cc569e | 94 | |
0339cd77 | 95 | *mtu = lease->mtu; |
a6cc569e TG |
96 | return 0; |
97 | } | |
98 | ||
a2ba62c7 | 99 | int sd_dhcp_lease_get_dns(sd_dhcp_lease *lease, const struct in_addr **addr) { |
a6cc569e TG |
100 | assert_return(lease, -EINVAL); |
101 | assert_return(addr, -EINVAL); | |
a6cc569e | 102 | |
0339cd77 LP |
103 | if (lease->dns_size <= 0) |
104 | return -ENODATA; | |
a6cc569e | 105 | |
0339cd77 LP |
106 | *addr = lease->dns; |
107 | return (int) lease->dns_size; | |
a6cc569e TG |
108 | } |
109 | ||
a2ba62c7 | 110 | int sd_dhcp_lease_get_ntp(sd_dhcp_lease *lease, const struct in_addr **addr) { |
46844696 TG |
111 | assert_return(lease, -EINVAL); |
112 | assert_return(addr, -EINVAL); | |
46844696 | 113 | |
0339cd77 LP |
114 | if (lease->ntp_size <= 0) |
115 | return -ENODATA; | |
46844696 | 116 | |
0339cd77 LP |
117 | *addr = lease->ntp; |
118 | return (int) lease->ntp_size; | |
46844696 TG |
119 | } |
120 | ||
a6cc569e TG |
121 | int sd_dhcp_lease_get_domainname(sd_dhcp_lease *lease, const char **domainname) { |
122 | assert_return(lease, -EINVAL); | |
123 | assert_return(domainname, -EINVAL); | |
124 | ||
0339cd77 LP |
125 | if (!lease->domainname) |
126 | return -ENODATA; | |
a6cc569e | 127 | |
0339cd77 | 128 | *domainname = lease->domainname; |
a6cc569e TG |
129 | return 0; |
130 | } | |
131 | ||
132 | int sd_dhcp_lease_get_hostname(sd_dhcp_lease *lease, const char **hostname) { | |
133 | assert_return(lease, -EINVAL); | |
134 | assert_return(hostname, -EINVAL); | |
135 | ||
0339cd77 LP |
136 | if (!lease->hostname) |
137 | return -ENODATA; | |
a6cc569e | 138 | |
0339cd77 | 139 | *hostname = lease->hostname; |
a6cc569e TG |
140 | return 0; |
141 | } | |
142 | ||
ce78df79 TG |
143 | int sd_dhcp_lease_get_root_path(sd_dhcp_lease *lease, const char **root_path) { |
144 | assert_return(lease, -EINVAL); | |
145 | assert_return(root_path, -EINVAL); | |
146 | ||
0339cd77 LP |
147 | if (!lease->root_path) |
148 | return -ENODATA; | |
ce78df79 | 149 | |
0339cd77 | 150 | *root_path = lease->root_path; |
ce78df79 TG |
151 | return 0; |
152 | } | |
153 | ||
a6cc569e TG |
154 | int sd_dhcp_lease_get_router(sd_dhcp_lease *lease, struct in_addr *addr) { |
155 | assert_return(lease, -EINVAL); | |
156 | assert_return(addr, -EINVAL); | |
157 | ||
0339cd77 LP |
158 | if (lease->router == 0) |
159 | return -ENODATA; | |
a6cc569e | 160 | |
0339cd77 | 161 | addr->s_addr = lease->router; |
a6cc569e TG |
162 | return 0; |
163 | } | |
164 | ||
165 | int sd_dhcp_lease_get_netmask(sd_dhcp_lease *lease, struct in_addr *addr) { | |
166 | assert_return(lease, -EINVAL); | |
167 | assert_return(addr, -EINVAL); | |
168 | ||
0339cd77 LP |
169 | if (!lease->have_subnet_mask) |
170 | return -ENODATA; | |
a6cc569e | 171 | |
0339cd77 | 172 | addr->s_addr = lease->subnet_mask; |
a6cc569e TG |
173 | return 0; |
174 | } | |
175 | ||
0ad853bc TG |
176 | int sd_dhcp_lease_get_server_identifier(sd_dhcp_lease *lease, struct in_addr *addr) { |
177 | assert_return(lease, -EINVAL); | |
178 | assert_return(addr, -EINVAL); | |
179 | ||
0339cd77 LP |
180 | if (lease->server_address == 0) |
181 | return -ENODATA; | |
0ad853bc | 182 | |
0339cd77 | 183 | addr->s_addr = lease->server_address; |
0ad853bc TG |
184 | return 0; |
185 | } | |
186 | ||
8e34a618 TG |
187 | int sd_dhcp_lease_get_next_server(sd_dhcp_lease *lease, struct in_addr *addr) { |
188 | assert_return(lease, -EINVAL); | |
189 | assert_return(addr, -EINVAL); | |
190 | ||
0339cd77 LP |
191 | if (lease->next_server == 0) |
192 | return -ENODATA; | |
8e34a618 | 193 | |
0339cd77 | 194 | addr->s_addr = lease->next_server; |
8e34a618 TG |
195 | return 0; |
196 | } | |
197 | ||
f8693fc7 BG |
198 | /* |
199 | * The returned routes array must be freed by the caller. | |
200 | * Route objects have the same lifetime of the lease and must not be freed. | |
201 | */ | |
202 | int sd_dhcp_lease_get_routes(sd_dhcp_lease *lease, sd_dhcp_route ***routes) { | |
203 | sd_dhcp_route **ret; | |
204 | unsigned i; | |
205 | ||
e1ea665e EY |
206 | assert_return(lease, -EINVAL); |
207 | assert_return(routes, -EINVAL); | |
e1ea665e | 208 | |
0339cd77 LP |
209 | if (lease->static_route_size <= 0) |
210 | return -ENODATA; | |
e1ea665e | 211 | |
f8693fc7 BG |
212 | ret = new(sd_dhcp_route *, lease->static_route_size); |
213 | if (!ret) | |
214 | return -ENOMEM; | |
215 | ||
216 | for (i = 0; i < lease->static_route_size; i++) | |
217 | ret[i] = &lease->static_route[i]; | |
218 | ||
219 | *routes = ret; | |
0339cd77 | 220 | return (int) lease->static_route_size; |
e1ea665e EY |
221 | } |
222 | ||
b85bc551 | 223 | int sd_dhcp_lease_get_search_domains(sd_dhcp_lease *lease, char ***domains) { |
da6053d0 | 224 | size_t r; |
b85bc551 DW |
225 | |
226 | assert_return(lease, -EINVAL); | |
227 | assert_return(domains, -EINVAL); | |
228 | ||
229 | r = strv_length(lease->search_domains); | |
230 | if (r > 0) { | |
231 | *domains = lease->search_domains; | |
232 | return (int) r; | |
233 | } | |
234 | ||
235 | return -ENODATA; | |
236 | } | |
237 | ||
0339cd77 | 238 | int sd_dhcp_lease_get_vendor_specific(sd_dhcp_lease *lease, const void **data, size_t *data_len) { |
e43a8393 BG |
239 | assert_return(lease, -EINVAL); |
240 | assert_return(data, -EINVAL); | |
241 | assert_return(data_len, -EINVAL); | |
242 | ||
0339cd77 LP |
243 | if (lease->vendor_specific_len <= 0) |
244 | return -ENODATA; | |
e43a8393 BG |
245 | |
246 | *data = lease->vendor_specific; | |
247 | *data_len = lease->vendor_specific_len; | |
e43a8393 BG |
248 | return 0; |
249 | } | |
250 | ||
a6cc569e | 251 | sd_dhcp_lease *sd_dhcp_lease_ref(sd_dhcp_lease *lease) { |
3733eec3 LP |
252 | |
253 | if (!lease) | |
254 | return NULL; | |
255 | ||
256 | assert(lease->n_ref >= 1); | |
257 | lease->n_ref++; | |
a6cc569e TG |
258 | |
259 | return lease; | |
260 | } | |
261 | ||
262 | sd_dhcp_lease *sd_dhcp_lease_unref(sd_dhcp_lease *lease) { | |
7e753d9d | 263 | |
3733eec3 LP |
264 | if (!lease) |
265 | return NULL; | |
7e753d9d | 266 | |
3733eec3 LP |
267 | assert(lease->n_ref >= 1); |
268 | lease->n_ref--; | |
269 | ||
270 | if (lease->n_ref > 0) | |
271 | return NULL; | |
272 | ||
273 | while (lease->private_options) { | |
274 | struct sd_dhcp_raw_option *option = lease->private_options; | |
275 | ||
276 | LIST_REMOVE(options, lease->private_options, option); | |
277 | ||
278 | free(option->data); | |
279 | free(option); | |
a6cc569e TG |
280 | } |
281 | ||
3733eec3 LP |
282 | free(lease->hostname); |
283 | free(lease->domainname); | |
284 | free(lease->dns); | |
285 | free(lease->ntp); | |
286 | free(lease->static_route); | |
287 | free(lease->client_id); | |
288 | free(lease->vendor_specific); | |
b85bc551 | 289 | strv_free(lease->search_domains); |
6b430fdb | 290 | return mfree(lease); |
a6cc569e TG |
291 | } |
292 | ||
0339cd77 | 293 | static int lease_parse_u32(const uint8_t *option, size_t len, uint32_t *ret, uint32_t min) { |
e140ae58 TG |
294 | assert(option); |
295 | assert(ret); | |
296 | ||
0339cd77 LP |
297 | if (len != 4) |
298 | return -EINVAL; | |
e140ae58 | 299 | |
0339cd77 LP |
300 | *ret = unaligned_read_be32((be32_t*) option); |
301 | if (*ret < min) | |
302 | *ret = min; | |
e140ae58 | 303 | |
0339cd77 | 304 | return 0; |
e140ae58 TG |
305 | } |
306 | ||
0339cd77 | 307 | static int lease_parse_u16(const uint8_t *option, size_t len, uint16_t *ret, uint16_t min) { |
e140ae58 TG |
308 | assert(option); |
309 | assert(ret); | |
310 | ||
0339cd77 LP |
311 | if (len != 2) |
312 | return -EINVAL; | |
e140ae58 | 313 | |
0339cd77 LP |
314 | *ret = unaligned_read_be16((be16_t*) option); |
315 | if (*ret < min) | |
316 | *ret = min; | |
f5c0c00f | 317 | |
0339cd77 | 318 | return 0; |
f5c0c00f TG |
319 | } |
320 | ||
0339cd77 | 321 | static int lease_parse_be32(const uint8_t *option, size_t len, be32_t *ret) { |
f5c0c00f TG |
322 | assert(option); |
323 | assert(ret); | |
324 | ||
0339cd77 LP |
325 | if (len != 4) |
326 | return -EINVAL; | |
f5c0c00f | 327 | |
0339cd77 LP |
328 | memcpy(ret, option, 4); |
329 | return 0; | |
f5c0c00f TG |
330 | } |
331 | ||
e140ae58 TG |
332 | static int lease_parse_string(const uint8_t *option, size_t len, char **ret) { |
333 | assert(option); | |
334 | assert(ret); | |
335 | ||
0339cd77 LP |
336 | if (len <= 0) |
337 | *ret = mfree(*ret); | |
338 | else { | |
e140ae58 TG |
339 | char *string; |
340 | ||
e989fd9b LP |
341 | /* |
342 | * One trailing NUL byte is OK, we don't mind. See: | |
343 | * https://github.com/systemd/systemd/issues/1337 | |
344 | */ | |
345 | if (memchr(option, 0, len - 1)) | |
43f447b1 LP |
346 | return -EINVAL; |
347 | ||
e989fd9b | 348 | string = strndup((const char *) option, len); |
e140ae58 | 349 | if (!string) |
43f447b1 | 350 | return -ENOMEM; |
e140ae58 TG |
351 | |
352 | free(*ret); | |
353 | *ret = string; | |
0339cd77 | 354 | } |
e140ae58 TG |
355 | |
356 | return 0; | |
357 | } | |
358 | ||
978c6477 LP |
359 | static int lease_parse_domain(const uint8_t *option, size_t len, char **ret) { |
360 | _cleanup_free_ char *name = NULL, *normalized = NULL; | |
361 | int r; | |
362 | ||
363 | assert(option); | |
364 | assert(ret); | |
365 | ||
366 | r = lease_parse_string(option, len, &name); | |
367 | if (r < 0) | |
368 | return r; | |
369 | if (!name) { | |
370 | *ret = mfree(*ret); | |
371 | return 0; | |
372 | } | |
373 | ||
374 | r = dns_name_normalize(name, &normalized); | |
375 | if (r < 0) | |
376 | return r; | |
377 | ||
378 | if (is_localhost(normalized)) | |
379 | return -EINVAL; | |
380 | ||
381 | if (dns_name_is_root(normalized)) | |
382 | return -EINVAL; | |
383 | ||
f9ecfd3b | 384 | free_and_replace(*ret, normalized); |
978c6477 LP |
385 | |
386 | return 0; | |
387 | } | |
388 | ||
d9ec2e63 LP |
389 | static void filter_bogus_addresses(struct in_addr *addresses, size_t *n) { |
390 | size_t i, j; | |
391 | ||
392 | /* Silently filter DNS/NTP servers supplied to us that do not make outside of the local scope. */ | |
393 | ||
394 | for (i = 0, j = 0; i < *n; i ++) { | |
395 | ||
396 | if (in4_addr_is_null(addresses+i) || | |
397 | in4_addr_is_localhost(addresses+i)) | |
398 | continue; | |
399 | ||
400 | addresses[j++] = addresses[i]; | |
401 | } | |
402 | ||
403 | *n = j; | |
404 | } | |
405 | ||
0339cd77 | 406 | static int lease_parse_in_addrs(const uint8_t *option, size_t len, struct in_addr **ret, size_t *n_ret) { |
e140ae58 TG |
407 | assert(option); |
408 | assert(ret); | |
0339cd77 | 409 | assert(n_ret); |
e140ae58 | 410 | |
0339cd77 LP |
411 | if (len <= 0) { |
412 | *ret = mfree(*ret); | |
413 | *n_ret = 0; | |
414 | } else { | |
415 | size_t n_addresses; | |
e140ae58 TG |
416 | struct in_addr *addresses; |
417 | ||
0339cd77 LP |
418 | if (len % 4 != 0) |
419 | return -EINVAL; | |
e140ae58 | 420 | |
0339cd77 LP |
421 | n_addresses = len / 4; |
422 | ||
423 | addresses = newdup(struct in_addr, option, n_addresses); | |
e140ae58 TG |
424 | if (!addresses) |
425 | return -ENOMEM; | |
426 | ||
d9ec2e63 LP |
427 | filter_bogus_addresses(addresses, &n_addresses); |
428 | ||
e140ae58 TG |
429 | free(*ret); |
430 | *ret = addresses; | |
0339cd77 | 431 | *n_ret = n_addresses; |
e140ae58 TG |
432 | } |
433 | ||
434 | return 0; | |
435 | } | |
436 | ||
0339cd77 LP |
437 | static int lease_parse_routes( |
438 | const uint8_t *option, size_t len, | |
439 | struct sd_dhcp_route **routes, size_t *routes_size, size_t *routes_allocated) { | |
e1ea665e EY |
440 | |
441 | struct in_addr addr; | |
442 | ||
0339cd77 | 443 | assert(option || len <= 0); |
e1ea665e EY |
444 | assert(routes); |
445 | assert(routes_size); | |
446 | assert(routes_allocated); | |
447 | ||
0339cd77 | 448 | if (len <= 0) |
e1ea665e EY |
449 | return 0; |
450 | ||
451 | if (len % 8 != 0) | |
452 | return -EINVAL; | |
453 | ||
454 | if (!GREEDY_REALLOC(*routes, *routes_allocated, *routes_size + (len / 8))) | |
455 | return -ENOMEM; | |
456 | ||
457 | while (len >= 8) { | |
458 | struct sd_dhcp_route *route = *routes + *routes_size; | |
1caa12d0 | 459 | int r; |
e1ea665e | 460 | |
8cdc46e7 | 461 | route->option = SD_DHCP_OPTION_STATIC_ROUTE; |
5a941f5f | 462 | r = in4_addr_default_prefixlen((struct in_addr*) option, &route->dst_prefixlen); |
1caa12d0 | 463 | if (r < 0) { |
0339cd77 | 464 | log_debug("Failed to determine destination prefix length from class based IP, ignoring"); |
e1ea665e EY |
465 | continue; |
466 | } | |
467 | ||
0339cd77 | 468 | assert_se(lease_parse_be32(option, 4, &addr.s_addr) >= 0); |
e1ea665e EY |
469 | route->dst_addr = inet_makeaddr(inet_netof(addr), 0); |
470 | option += 4; | |
471 | ||
0339cd77 | 472 | assert_se(lease_parse_be32(option, 4, &route->gw_addr.s_addr) >= 0); |
e1ea665e EY |
473 | option += 4; |
474 | ||
475 | len -= 8; | |
476 | (*routes_size)++; | |
477 | } | |
478 | ||
479 | return 0; | |
480 | } | |
481 | ||
482 | /* parses RFC3442 Classless Static Route Option */ | |
0339cd77 LP |
483 | static int lease_parse_classless_routes( |
484 | const uint8_t *option, size_t len, | |
485 | struct sd_dhcp_route **routes, size_t *routes_size, size_t *routes_allocated) { | |
e1ea665e | 486 | |
0339cd77 | 487 | assert(option || len <= 0); |
e1ea665e EY |
488 | assert(routes); |
489 | assert(routes_size); | |
490 | assert(routes_allocated); | |
491 | ||
0339cd77 LP |
492 | if (len <= 0) |
493 | return 0; | |
494 | ||
e1ea665e EY |
495 | /* option format: (subnet-mask-width significant-subnet-octets gateway-ip)* */ |
496 | ||
497 | while (len > 0) { | |
498 | uint8_t dst_octets; | |
499 | struct sd_dhcp_route *route; | |
500 | ||
501 | if (!GREEDY_REALLOC(*routes, *routes_allocated, *routes_size + 1)) | |
0339cd77 | 502 | return -ENOMEM; |
e1ea665e EY |
503 | |
504 | route = *routes + *routes_size; | |
8cdc46e7 | 505 | route->option = SD_DHCP_OPTION_CLASSLESS_STATIC_ROUTE; |
e1ea665e EY |
506 | |
507 | dst_octets = (*option == 0 ? 0 : ((*option - 1) / 8) + 1); | |
508 | route->dst_prefixlen = *option; | |
509 | option++; | |
510 | len--; | |
511 | ||
512 | /* can't have more than 4 octets in IPv4 */ | |
513 | if (dst_octets > 4 || len < dst_octets) | |
514 | return -EINVAL; | |
515 | ||
516 | route->dst_addr.s_addr = 0; | |
517 | memcpy(&route->dst_addr.s_addr, option, dst_octets); | |
518 | option += dst_octets; | |
519 | len -= dst_octets; | |
520 | ||
521 | if (len < 4) | |
522 | return -EINVAL; | |
523 | ||
b14fff6e | 524 | assert_se(lease_parse_be32(option, 4, &route->gw_addr.s_addr) >= 0); |
e1ea665e EY |
525 | option += 4; |
526 | len -= 4; | |
527 | ||
528 | (*routes_size)++; | |
529 | } | |
530 | ||
531 | return 0; | |
532 | } | |
533 | ||
e4735228 | 534 | int dhcp_lease_parse_options(uint8_t code, uint8_t len, const void *option, void *userdata) { |
2d03c0b8 | 535 | sd_dhcp_lease *lease = userdata; |
e140ae58 TG |
536 | int r; |
537 | ||
538 | assert(lease); | |
a6cc569e TG |
539 | |
540 | switch(code) { | |
541 | ||
22805d92 | 542 | case SD_DHCP_OPTION_IP_ADDRESS_LEASE_TIME: |
0339cd77 LP |
543 | r = lease_parse_u32(option, len, &lease->lifetime, 1); |
544 | if (r < 0) | |
545 | log_debug_errno(r, "Failed to parse lease time, ignoring: %m"); | |
546 | ||
a6cc569e TG |
547 | break; |
548 | ||
22805d92 | 549 | case SD_DHCP_OPTION_SERVER_IDENTIFIER: |
0339cd77 LP |
550 | r = lease_parse_be32(option, len, &lease->server_address); |
551 | if (r < 0) | |
552 | log_debug_errno(r, "Failed to parse server identifier, ignoring: %m"); | |
553 | ||
a6cc569e TG |
554 | break; |
555 | ||
22805d92 | 556 | case SD_DHCP_OPTION_SUBNET_MASK: |
0339cd77 LP |
557 | r = lease_parse_be32(option, len, &lease->subnet_mask); |
558 | if (r < 0) | |
559 | log_debug_errno(r, "Failed to parse subnet mask, ignoring: %m"); | |
560 | else | |
561 | lease->have_subnet_mask = true; | |
a6cc569e TG |
562 | break; |
563 | ||
22805d92 | 564 | case SD_DHCP_OPTION_BROADCAST: |
0339cd77 LP |
565 | r = lease_parse_be32(option, len, &lease->broadcast); |
566 | if (r < 0) | |
567 | log_debug_errno(r, "Failed to parse broadcast address, ignoring: %m"); | |
568 | else | |
569 | lease->have_broadcast = true; | |
f5c0c00f TG |
570 | break; |
571 | ||
22805d92 | 572 | case SD_DHCP_OPTION_ROUTER: |
0339cd77 LP |
573 | if (len >= 4) { |
574 | r = lease_parse_be32(option, 4, &lease->router); | |
575 | if (r < 0) | |
576 | log_debug_errno(r, "Failed to parse router address, ignoring: %m"); | |
577 | } | |
a6cc569e TG |
578 | break; |
579 | ||
22805d92 | 580 | case SD_DHCP_OPTION_DOMAIN_NAME_SERVER: |
0339cd77 LP |
581 | r = lease_parse_in_addrs(option, len, &lease->dns, &lease->dns_size); |
582 | if (r < 0) | |
583 | log_debug_errno(r, "Failed to parse DNS server, ignoring: %m"); | |
a6cc569e TG |
584 | break; |
585 | ||
22805d92 | 586 | case SD_DHCP_OPTION_NTP_SERVER: |
0339cd77 LP |
587 | r = lease_parse_in_addrs(option, len, &lease->ntp, &lease->ntp_size); |
588 | if (r < 0) | |
589 | log_debug_errno(r, "Failed to parse NTP server, ignoring: %m"); | |
f5c0c00f TG |
590 | break; |
591 | ||
22805d92 | 592 | case SD_DHCP_OPTION_STATIC_ROUTE: |
0339cd77 LP |
593 | r = lease_parse_routes(option, len, &lease->static_route, &lease->static_route_size, &lease->static_route_allocated); |
594 | if (r < 0) | |
595 | log_debug_errno(r, "Failed to parse static routes, ignoring: %m"); | |
f5c0c00f TG |
596 | break; |
597 | ||
22805d92 | 598 | case SD_DHCP_OPTION_INTERFACE_MTU: |
0339cd77 LP |
599 | r = lease_parse_u16(option, len, &lease->mtu, 68); |
600 | if (r < 0) | |
601 | log_debug_errno(r, "Failed to parse MTU, ignoring: %m"); | |
955d99ed | 602 | if (lease->mtu < DHCP_DEFAULT_MIN_SIZE) { |
4dd53da9 | 603 | log_debug("MTU value of %" PRIu16 " too small. Using default MTU value of %d instead.", lease->mtu, DHCP_DEFAULT_MIN_SIZE); |
955d99ed MG |
604 | lease->mtu = DHCP_DEFAULT_MIN_SIZE; |
605 | } | |
606 | ||
f5c0c00f TG |
607 | break; |
608 | ||
978c6477 LP |
609 | case SD_DHCP_OPTION_DOMAIN_NAME: |
610 | r = lease_parse_domain(option, len, &lease->domainname); | |
0339cd77 LP |
611 | if (r < 0) { |
612 | log_debug_errno(r, "Failed to parse domain name, ignoring: %m"); | |
613 | return 0; | |
614 | } | |
a6cc569e | 615 | |
784d9b9c | 616 | break; |
784d9b9c | 617 | |
b85bc551 DW |
618 | case SD_DHCP_OPTION_DOMAIN_SEARCH_LIST: |
619 | r = dhcp_lease_parse_search_domains(option, len, &lease->search_domains); | |
620 | if (r < 0) | |
621 | log_debug_errno(r, "Failed to parse Domain Search List, ignoring: %m"); | |
622 | break; | |
623 | ||
978c6477 LP |
624 | case SD_DHCP_OPTION_HOST_NAME: |
625 | r = lease_parse_domain(option, len, &lease->hostname); | |
0339cd77 LP |
626 | if (r < 0) { |
627 | log_debug_errno(r, "Failed to parse host name, ignoring: %m"); | |
628 | return 0; | |
629 | } | |
a6cc569e | 630 | |
784d9b9c | 631 | break; |
ce78df79 | 632 | |
22805d92 | 633 | case SD_DHCP_OPTION_ROOT_PATH: |
0339cd77 LP |
634 | r = lease_parse_string(option, len, &lease->root_path); |
635 | if (r < 0) | |
636 | log_debug_errno(r, "Failed to parse root path, ignoring: %m"); | |
637 | break; | |
ce78df79 | 638 | |
22805d92 | 639 | case SD_DHCP_OPTION_RENEWAL_T1_TIME: |
0339cd77 LP |
640 | r = lease_parse_u32(option, len, &lease->t1, 1); |
641 | if (r < 0) | |
642 | log_debug_errno(r, "Failed to parse T1 time, ignoring: %m"); | |
a6cc569e TG |
643 | break; |
644 | ||
22805d92 | 645 | case SD_DHCP_OPTION_REBINDING_T2_TIME: |
0339cd77 LP |
646 | r = lease_parse_u32(option, len, &lease->t2, 1); |
647 | if (r < 0) | |
648 | log_debug_errno(r, "Failed to parse T2 time, ignoring: %m"); | |
a6cc569e | 649 | break; |
e1ea665e | 650 | |
22805d92 | 651 | case SD_DHCP_OPTION_CLASSLESS_STATIC_ROUTE: |
0339cd77 | 652 | r = lease_parse_classless_routes( |
2d03c0b8 LP |
653 | option, len, |
654 | &lease->static_route, | |
655 | &lease->static_route_size, | |
656 | &lease->static_route_allocated); | |
0339cd77 LP |
657 | if (r < 0) |
658 | log_debug_errno(r, "Failed to parse classless routes, ignoring: %m"); | |
659 | break; | |
e43a8393 | 660 | |
22805d92 | 661 | case SD_DHCP_OPTION_NEW_TZDB_TIMEZONE: { |
8eb9058d LP |
662 | _cleanup_free_ char *tz = NULL; |
663 | ||
664 | r = lease_parse_string(option, len, &tz); | |
0339cd77 LP |
665 | if (r < 0) { |
666 | log_debug_errno(r, "Failed to parse timezone option, ignoring: %m"); | |
667 | return 0; | |
668 | } | |
8eb9058d | 669 | |
089fb865 | 670 | if (!timezone_is_valid(tz, LOG_DEBUG)) { |
0339cd77 LP |
671 | log_debug_errno(r, "Timezone is not valid, ignoring: %m"); |
672 | return 0; | |
673 | } | |
8eb9058d | 674 | |
f9ecfd3b | 675 | free_and_replace(lease->timezone, tz); |
0339cd77 | 676 | |
8eb9058d LP |
677 | break; |
678 | } | |
679 | ||
22805d92 | 680 | case SD_DHCP_OPTION_VENDOR_SPECIFIC: |
2d03c0b8 | 681 | |
0339cd77 LP |
682 | if (len <= 0) |
683 | lease->vendor_specific = mfree(lease->vendor_specific); | |
684 | else { | |
685 | void *p; | |
686 | ||
687 | p = memdup(option, len); | |
688 | if (!p) | |
e43a8393 | 689 | return -ENOMEM; |
e43a8393 | 690 | |
0339cd77 LP |
691 | free(lease->vendor_specific); |
692 | lease->vendor_specific = p; | |
693 | } | |
7e753d9d | 694 | |
0339cd77 LP |
695 | lease->vendor_specific_len = len; |
696 | break; | |
7e753d9d | 697 | |
22805d92 | 698 | case SD_DHCP_OPTION_PRIVATE_BASE ... SD_DHCP_OPTION_PRIVATE_LAST: |
7e753d9d AC |
699 | r = dhcp_lease_insert_private_option(lease, code, option, len); |
700 | if (r < 0) | |
701 | return r; | |
0339cd77 LP |
702 | |
703 | break; | |
704 | ||
705 | default: | |
f693e9b3 | 706 | log_debug("Ignoring option DHCP option %"PRIu8" while parsing.", code); |
0339cd77 | 707 | break; |
a6cc569e TG |
708 | } |
709 | ||
710 | return 0; | |
711 | } | |
712 | ||
b85bc551 DW |
713 | /* Parses compressed domain names. */ |
714 | int dhcp_lease_parse_search_domains(const uint8_t *option, size_t len, char ***domains) { | |
715 | _cleanup_strv_free_ char **names = NULL; | |
716 | size_t pos = 0, cnt = 0; | |
717 | int r; | |
718 | ||
719 | assert(domains); | |
720 | assert_return(option && len > 0, -ENODATA); | |
721 | ||
722 | while (pos < len) { | |
723 | _cleanup_free_ char *name = NULL; | |
724 | size_t n = 0, allocated = 0; | |
725 | size_t jump_barrier = pos, next_chunk = 0; | |
726 | bool first = true; | |
727 | ||
728 | for (;;) { | |
729 | uint8_t c; | |
730 | c = option[pos++]; | |
731 | ||
732 | if (c == 0) { | |
733 | /* End of name */ | |
734 | break; | |
735 | } else if (c <= 63) { | |
736 | const char *label; | |
737 | ||
738 | /* Literal label */ | |
739 | label = (const char*) (option + pos); | |
740 | pos += c; | |
741 | if (pos >= len) | |
742 | return -EBADMSG; | |
743 | ||
744 | if (!GREEDY_REALLOC(name, allocated, n + !first + DNS_LABEL_ESCAPED_MAX)) | |
745 | return -ENOMEM; | |
746 | ||
747 | if (first) | |
748 | first = false; | |
749 | else | |
750 | name[n++] = '.'; | |
751 | ||
752 | r = dns_label_escape(label, c, name + n, DNS_LABEL_ESCAPED_MAX); | |
753 | if (r < 0) | |
754 | return r; | |
755 | ||
756 | n += r; | |
757 | } else if ((c & 0xc0) == 0xc0) { | |
758 | /* Pointer */ | |
759 | ||
760 | uint8_t d; | |
761 | uint16_t ptr; | |
762 | ||
763 | if (pos >= len) | |
764 | return -EBADMSG; | |
765 | ||
766 | d = option[pos++]; | |
767 | ptr = (uint16_t) (c & ~0xc0) << 8 | (uint16_t) d; | |
768 | ||
769 | /* Jumps are limited to a "prior occurrence" (RFC-1035 4.1.4) */ | |
770 | if (ptr >= jump_barrier) | |
771 | return -EBADMSG; | |
772 | jump_barrier = ptr; | |
773 | ||
774 | /* Save current location so we don't end up re-parsing what's parsed so far. */ | |
775 | if (next_chunk == 0) | |
776 | next_chunk = pos; | |
777 | ||
778 | pos = ptr; | |
779 | } else | |
780 | return -EBADMSG; | |
781 | } | |
782 | ||
783 | if (!GREEDY_REALLOC(name, allocated, n + 1)) | |
784 | return -ENOMEM; | |
785 | name[n] = 0; | |
786 | ||
787 | r = strv_extend(&names, name); | |
788 | if (r < 0) | |
789 | return r; | |
790 | ||
791 | cnt++; | |
792 | ||
793 | if (next_chunk != 0) | |
794 | pos = next_chunk; | |
795 | } | |
796 | ||
ae2a15bc | 797 | *domains = TAKE_PTR(names); |
b85bc551 DW |
798 | |
799 | return cnt; | |
800 | } | |
801 | ||
0339cd77 | 802 | int dhcp_lease_insert_private_option(sd_dhcp_lease *lease, uint8_t tag, const void *data, uint8_t len) { |
7e753d9d AC |
803 | struct sd_dhcp_raw_option *cur, *option; |
804 | ||
0339cd77 LP |
805 | assert(lease); |
806 | ||
7e753d9d AC |
807 | LIST_FOREACH(options, cur, lease->private_options) { |
808 | if (tag < cur->tag) | |
809 | break; | |
0339cd77 LP |
810 | if (tag == cur->tag) { |
811 | log_debug("Ignoring duplicate option, tagged %i.", tag); | |
7e753d9d AC |
812 | return 0; |
813 | } | |
814 | } | |
815 | ||
816 | option = new(struct sd_dhcp_raw_option, 1); | |
817 | if (!option) | |
818 | return -ENOMEM; | |
819 | ||
820 | option->tag = tag; | |
821 | option->length = len; | |
822 | option->data = memdup(data, len); | |
823 | if (!option->data) { | |
824 | free(option); | |
825 | return -ENOMEM; | |
826 | } | |
827 | ||
828 | LIST_INSERT_BEFORE(options, lease->private_options, cur, option); | |
7e753d9d AC |
829 | return 0; |
830 | } | |
831 | ||
a6cc569e | 832 | int dhcp_lease_new(sd_dhcp_lease **ret) { |
6e00a806 | 833 | sd_dhcp_lease *lease; |
a6cc569e TG |
834 | |
835 | lease = new0(sd_dhcp_lease, 1); | |
836 | if (!lease) | |
837 | return -ENOMEM; | |
838 | ||
8ddbeaa2 | 839 | lease->router = INADDR_ANY; |
3733eec3 | 840 | lease->n_ref = 1; |
a6cc569e TG |
841 | |
842 | *ret = lease; | |
a6cc569e TG |
843 | return 0; |
844 | } | |
fe8db0c5 | 845 | |
bd91b83e | 846 | int dhcp_lease_save(sd_dhcp_lease *lease, const char *lease_file) { |
fe8db0c5 TG |
847 | _cleanup_free_ char *temp_path = NULL; |
848 | _cleanup_fclose_ FILE *f = NULL; | |
a073309f | 849 | struct sd_dhcp_raw_option *option; |
fe8db0c5 | 850 | struct in_addr address; |
a2ba62c7 | 851 | const struct in_addr *addresses; |
e4735228 | 852 | const void *client_id, *data; |
e43a8393 | 853 | size_t client_id_len, data_len; |
fe8db0c5 TG |
854 | const char *string; |
855 | uint16_t mtu; | |
f8693fc7 | 856 | _cleanup_free_ sd_dhcp_route **routes = NULL; |
b85bc551 | 857 | char **search_domains = NULL; |
0339cd77 | 858 | uint32_t t1, t2, lifetime; |
fe8db0c5 TG |
859 | int r; |
860 | ||
861 | assert(lease); | |
862 | assert(lease_file); | |
863 | ||
fe8db0c5 TG |
864 | r = fopen_temporary(lease_file, &f, &temp_path); |
865 | if (r < 0) | |
dacd6cee | 866 | goto fail; |
fe8db0c5 | 867 | |
0d536673 LP |
868 | (void) __fsetlocking(f, FSETLOCKING_BYCALLER); |
869 | (void) fchmod(fileno(f), 0644); | |
fe8db0c5 | 870 | |
fe8db0c5 | 871 | fprintf(f, |
0339cd77 | 872 | "# This is private data. Do not parse.\n"); |
fe8db0c5 | 873 | |
0339cd77 LP |
874 | r = sd_dhcp_lease_get_address(lease, &address); |
875 | if (r >= 0) | |
876 | fprintf(f, "ADDRESS=%s\n", inet_ntoa(address)); | |
fe8db0c5 | 877 | |
0339cd77 LP |
878 | r = sd_dhcp_lease_get_netmask(lease, &address); |
879 | if (r >= 0) | |
880 | fprintf(f, "NETMASK=%s\n", inet_ntoa(address)); | |
fe8db0c5 | 881 | |
8ddbeaa2 UTL |
882 | r = sd_dhcp_lease_get_router(lease, &address); |
883 | if (r >= 0) | |
884 | fprintf(f, "ROUTER=%s\n", inet_ntoa(address)); | |
885 | ||
0ad853bc | 886 | r = sd_dhcp_lease_get_server_identifier(lease, &address); |
109731eb | 887 | if (r >= 0) |
0339cd77 | 888 | fprintf(f, "SERVER_ADDRESS=%s\n", inet_ntoa(address)); |
0ad853bc | 889 | |
8e34a618 | 890 | r = sd_dhcp_lease_get_next_server(lease, &address); |
109731eb TG |
891 | if (r >= 0) |
892 | fprintf(f, "NEXT_SERVER=%s\n", inet_ntoa(address)); | |
8e34a618 | 893 | |
0339cd77 LP |
894 | r = sd_dhcp_lease_get_broadcast(lease, &address); |
895 | if (r >= 0) | |
896 | fprintf(f, "BROADCAST=%s\n", inet_ntoa(address)); | |
897 | ||
fe8db0c5 TG |
898 | r = sd_dhcp_lease_get_mtu(lease, &mtu); |
899 | if (r >= 0) | |
900 | fprintf(f, "MTU=%" PRIu16 "\n", mtu); | |
901 | ||
0339cd77 LP |
902 | r = sd_dhcp_lease_get_t1(lease, &t1); |
903 | if (r >= 0) | |
904 | fprintf(f, "T1=%" PRIu32 "\n", t1); | |
905 | ||
906 | r = sd_dhcp_lease_get_t2(lease, &t2); | |
109731eb | 907 | if (r >= 0) |
0339cd77 LP |
908 | fprintf(f, "T2=%" PRIu32 "\n", t2); |
909 | ||
910 | r = sd_dhcp_lease_get_lifetime(lease, &lifetime); | |
911 | if (r >= 0) | |
912 | fprintf(f, "LIFETIME=%" PRIu32 "\n", lifetime); | |
913 | ||
914 | r = sd_dhcp_lease_get_dns(lease, &addresses); | |
915 | if (r > 0) { | |
0d536673 | 916 | fputs("DNS=", f); |
b0e39c82 | 917 | serialize_in_addrs(f, addresses, r); |
0d536673 | 918 | fputs("\n", f); |
0339cd77 | 919 | } |
109731eb | 920 | |
a2ba62c7 | 921 | r = sd_dhcp_lease_get_ntp(lease, &addresses); |
0339cd77 | 922 | if (r > 0) { |
0d536673 | 923 | fputs("NTP=", f); |
b0e39c82 | 924 | serialize_in_addrs(f, addresses, r); |
0d536673 | 925 | fputs("\n", f); |
0339cd77 | 926 | } |
fe8db0c5 TG |
927 | |
928 | r = sd_dhcp_lease_get_domainname(lease, &string); | |
929 | if (r >= 0) | |
930 | fprintf(f, "DOMAINNAME=%s\n", string); | |
931 | ||
b85bc551 DW |
932 | r = sd_dhcp_lease_get_search_domains(lease, &search_domains); |
933 | if (r > 0) { | |
0d536673 | 934 | fputs("DOMAIN_SEARCH_LIST=", f); |
b85bc551 | 935 | fputstrv(f, search_domains, NULL, NULL); |
0d536673 | 936 | fputs("\n", f); |
b85bc551 DW |
937 | } |
938 | ||
fe8db0c5 TG |
939 | r = sd_dhcp_lease_get_hostname(lease, &string); |
940 | if (r >= 0) | |
941 | fprintf(f, "HOSTNAME=%s\n", string); | |
942 | ||
ce78df79 TG |
943 | r = sd_dhcp_lease_get_root_path(lease, &string); |
944 | if (r >= 0) | |
945 | fprintf(f, "ROOT_PATH=%s\n", string); | |
946 | ||
a2ba62c7 | 947 | r = sd_dhcp_lease_get_routes(lease, &routes); |
0339cd77 | 948 | if (r > 0) |
a2ba62c7 | 949 | serialize_dhcp_routes(f, "ROUTES", routes, r); |
e1ea665e | 950 | |
8eb9058d LP |
951 | r = sd_dhcp_lease_get_timezone(lease, &string); |
952 | if (r >= 0) | |
953 | fprintf(f, "TIMEZONE=%s\n", string); | |
954 | ||
e37f74a6 DW |
955 | r = sd_dhcp_lease_get_client_id(lease, &client_id, &client_id_len); |
956 | if (r >= 0) { | |
3587161a | 957 | _cleanup_free_ char *client_id_hex = NULL; |
e37f74a6 | 958 | |
dde8bb32 | 959 | client_id_hex = hexmem(client_id, client_id_len); |
e37f74a6 DW |
960 | if (!client_id_hex) { |
961 | r = -ENOMEM; | |
dacd6cee | 962 | goto fail; |
e37f74a6 DW |
963 | } |
964 | fprintf(f, "CLIENTID=%s\n", client_id_hex); | |
965 | } | |
966 | ||
e43a8393 BG |
967 | r = sd_dhcp_lease_get_vendor_specific(lease, &data, &data_len); |
968 | if (r >= 0) { | |
969 | _cleanup_free_ char *option_hex = NULL; | |
970 | ||
971 | option_hex = hexmem(data, data_len); | |
972 | if (!option_hex) { | |
973 | r = -ENOMEM; | |
dacd6cee | 974 | goto fail; |
e43a8393 BG |
975 | } |
976 | fprintf(f, "VENDOR_SPECIFIC=%s\n", option_hex); | |
977 | } | |
978 | ||
a073309f | 979 | LIST_FOREACH(options, option, lease->private_options) { |
dbcb4a90 | 980 | char key[STRLEN("OPTION_000")+1]; |
0339cd77 | 981 | |
d054f0a4 | 982 | xsprintf(key, "OPTION_%" PRIu8, option->tag); |
a073309f AC |
983 | r = serialize_dhcp_option(f, key, option->data, option->length); |
984 | if (r < 0) | |
985 | goto fail; | |
986 | } | |
987 | ||
dacd6cee LP |
988 | r = fflush_and_check(f); |
989 | if (r < 0) | |
990 | goto fail; | |
fe8db0c5 | 991 | |
dacd6cee | 992 | if (rename(temp_path, lease_file) < 0) { |
fe8db0c5 | 993 | r = -errno; |
dacd6cee | 994 | goto fail; |
fe8db0c5 TG |
995 | } |
996 | ||
dacd6cee LP |
997 | return 0; |
998 | ||
999 | fail: | |
1000 | if (temp_path) | |
1001 | (void) unlink(temp_path); | |
fe8db0c5 | 1002 | |
dacd6cee | 1003 | return log_error_errno(r, "Failed to save lease data %s: %m", lease_file); |
fe8db0c5 TG |
1004 | } |
1005 | ||
bd91b83e | 1006 | int dhcp_lease_load(sd_dhcp_lease **ret, const char *lease_file) { |
0339cd77 | 1007 | |
4afd3348 | 1008 | _cleanup_(sd_dhcp_lease_unrefp) sd_dhcp_lease *lease = NULL; |
0339cd77 LP |
1009 | _cleanup_free_ char |
1010 | *address = NULL, | |
1011 | *router = NULL, | |
1012 | *netmask = NULL, | |
1013 | *server_address = NULL, | |
1014 | *next_server = NULL, | |
1015 | *broadcast = NULL, | |
1016 | *dns = NULL, | |
1017 | *ntp = NULL, | |
1018 | *mtu = NULL, | |
1019 | *routes = NULL, | |
b85bc551 | 1020 | *domains = NULL, |
0339cd77 LP |
1021 | *client_id_hex = NULL, |
1022 | *vendor_specific_hex = NULL, | |
1023 | *lifetime = NULL, | |
1024 | *t1 = NULL, | |
1025 | *t2 = NULL, | |
22805d92 | 1026 | *options[SD_DHCP_OPTION_PRIVATE_LAST - SD_DHCP_OPTION_PRIVATE_BASE + 1] = {}; |
0339cd77 | 1027 | |
a073309f | 1028 | int r, i; |
fe8db0c5 TG |
1029 | |
1030 | assert(lease_file); | |
1031 | assert(ret); | |
1032 | ||
1033 | r = dhcp_lease_new(&lease); | |
1034 | if (r < 0) | |
1035 | return r; | |
1036 | ||
1037 | r = parse_env_file(lease_file, NEWLINE, | |
1038 | "ADDRESS", &address, | |
1039 | "ROUTER", &router, | |
1040 | "NETMASK", &netmask, | |
0ad853bc | 1041 | "SERVER_IDENTIFIER", &server_address, |
8e34a618 | 1042 | "NEXT_SERVER", &next_server, |
0339cd77 | 1043 | "BROADCAST", &broadcast, |
109731eb TG |
1044 | "DNS", &dns, |
1045 | "NTP", &ntp, | |
fe8db0c5 TG |
1046 | "MTU", &mtu, |
1047 | "DOMAINNAME", &lease->domainname, | |
1048 | "HOSTNAME", &lease->hostname, | |
b85bc551 | 1049 | "DOMAIN_SEARCH_LIST", &domains, |
ce78df79 | 1050 | "ROOT_PATH", &lease->root_path, |
e1ea665e | 1051 | "ROUTES", &routes, |
e37f74a6 | 1052 | "CLIENTID", &client_id_hex, |
8eb9058d | 1053 | "TIMEZONE", &lease->timezone, |
e43a8393 | 1054 | "VENDOR_SPECIFIC", &vendor_specific_hex, |
0339cd77 LP |
1055 | "LIFETIME", &lifetime, |
1056 | "T1", &t1, | |
1057 | "T2", &t2, | |
a073309f AC |
1058 | "OPTION_224", &options[0], |
1059 | "OPTION_225", &options[1], | |
1060 | "OPTION_226", &options[2], | |
1061 | "OPTION_227", &options[3], | |
1062 | "OPTION_228", &options[4], | |
1063 | "OPTION_229", &options[5], | |
1064 | "OPTION_230", &options[6], | |
1065 | "OPTION_231", &options[7], | |
1066 | "OPTION_232", &options[8], | |
1067 | "OPTION_233", &options[9], | |
1068 | "OPTION_234", &options[10], | |
1069 | "OPTION_235", &options[11], | |
1070 | "OPTION_236", &options[12], | |
1071 | "OPTION_237", &options[13], | |
1072 | "OPTION_238", &options[14], | |
1073 | "OPTION_239", &options[15], | |
1074 | "OPTION_240", &options[16], | |
1075 | "OPTION_241", &options[17], | |
1076 | "OPTION_242", &options[18], | |
1077 | "OPTION_243", &options[19], | |
1078 | "OPTION_244", &options[20], | |
1079 | "OPTION_245", &options[21], | |
1080 | "OPTION_246", &options[22], | |
1081 | "OPTION_247", &options[23], | |
1082 | "OPTION_248", &options[24], | |
1083 | "OPTION_249", &options[25], | |
1084 | "OPTION_250", &options[26], | |
1085 | "OPTION_251", &options[27], | |
1086 | "OPTION_252", &options[28], | |
1087 | "OPTION_253", &options[29], | |
1088 | "OPTION_254", &options[30], | |
fe8db0c5 | 1089 | NULL); |
fe8db0c5 TG |
1090 | if (r < 0) |
1091 | return r; | |
1092 | ||
0339cd77 LP |
1093 | if (address) { |
1094 | r = inet_pton(AF_INET, address, &lease->address); | |
1095 | if (r <= 0) | |
e26ea7fc | 1096 | log_debug("Failed to parse address %s, ignoring.", address); |
0339cd77 | 1097 | } |
fe8db0c5 | 1098 | |
8ddbeaa2 | 1099 | if (router) { |
0339cd77 LP |
1100 | r = inet_pton(AF_INET, router, &lease->router); |
1101 | if (r <= 0) | |
e26ea7fc | 1102 | log_debug("Failed to parse router %s, ignoring.", router); |
8ddbeaa2 | 1103 | } |
fe8db0c5 | 1104 | |
0339cd77 LP |
1105 | if (netmask) { |
1106 | r = inet_pton(AF_INET, netmask, &lease->subnet_mask); | |
1107 | if (r <= 0) | |
e26ea7fc | 1108 | log_debug("Failed to parse netmask %s, ignoring.", netmask); |
0339cd77 LP |
1109 | else |
1110 | lease->have_subnet_mask = true; | |
1111 | } | |
fe8db0c5 | 1112 | |
0ad853bc | 1113 | if (server_address) { |
0339cd77 LP |
1114 | r = inet_pton(AF_INET, server_address, &lease->server_address); |
1115 | if (r <= 0) | |
e26ea7fc | 1116 | log_debug("Failed to parse server address %s, ignoring.", server_address); |
0ad853bc TG |
1117 | } |
1118 | ||
8e34a618 | 1119 | if (next_server) { |
0339cd77 LP |
1120 | r = inet_pton(AF_INET, next_server, &lease->next_server); |
1121 | if (r <= 0) | |
e26ea7fc | 1122 | log_debug("Failed to parse next server %s, ignoring.", next_server); |
0339cd77 | 1123 | } |
8e34a618 | 1124 | |
0339cd77 LP |
1125 | if (broadcast) { |
1126 | r = inet_pton(AF_INET, broadcast, &lease->broadcast); | |
1127 | if (r <= 0) | |
e26ea7fc | 1128 | log_debug("Failed to parse broadcast address %s, ignoring.", broadcast); |
0339cd77 LP |
1129 | else |
1130 | lease->have_broadcast = true; | |
8e34a618 TG |
1131 | } |
1132 | ||
109731eb | 1133 | if (dns) { |
a2ba62c7 | 1134 | r = deserialize_in_addrs(&lease->dns, dns); |
109731eb | 1135 | if (r < 0) |
0339cd77 LP |
1136 | log_debug_errno(r, "Failed to deserialize DNS servers %s, ignoring: %m", dns); |
1137 | else | |
1138 | lease->dns_size = r; | |
109731eb TG |
1139 | } |
1140 | ||
1141 | if (ntp) { | |
a2ba62c7 | 1142 | r = deserialize_in_addrs(&lease->ntp, ntp); |
109731eb | 1143 | if (r < 0) |
0339cd77 LP |
1144 | log_debug_errno(r, "Failed to deserialize NTP servers %s, ignoring: %m", ntp); |
1145 | else | |
1146 | lease->ntp_size = r; | |
109731eb TG |
1147 | } |
1148 | ||
fe8db0c5 | 1149 | if (mtu) { |
0339cd77 LP |
1150 | r = safe_atou16(mtu, &lease->mtu); |
1151 | if (r < 0) | |
1152 | log_debug_errno(r, "Failed to parse MTU %s, ignoring: %m", mtu); | |
fe8db0c5 TG |
1153 | } |
1154 | ||
b85bc551 DW |
1155 | if (domains) { |
1156 | _cleanup_strv_free_ char **a = NULL; | |
1157 | a = strv_split(domains, " "); | |
1158 | if (!a) | |
1159 | return -ENOMEM; | |
1160 | ||
1161 | if (!strv_isempty(a)) { | |
1162 | lease->search_domains = a; | |
1163 | a = NULL; | |
1164 | } | |
1165 | } | |
1166 | ||
e1ea665e | 1167 | if (routes) { |
0339cd77 LP |
1168 | r = deserialize_dhcp_routes( |
1169 | &lease->static_route, | |
1170 | &lease->static_route_size, | |
1171 | &lease->static_route_allocated, | |
1172 | routes); | |
1173 | if (r < 0) | |
1174 | log_debug_errno(r, "Failed to parse DHCP routes %s, ignoring: %m", routes); | |
1175 | } | |
1176 | ||
1177 | if (lifetime) { | |
1178 | r = safe_atou32(lifetime, &lease->lifetime); | |
1179 | if (r < 0) | |
1180 | log_debug_errno(r, "Failed to parse lifetime %s, ignoring: %m", lifetime); | |
1181 | } | |
1182 | ||
1183 | if (t1) { | |
1184 | r = safe_atou32(t1, &lease->t1); | |
1185 | if (r < 0) | |
1186 | log_debug_errno(r, "Failed to parse T1 %s, ignoring: %m", t1); | |
1187 | } | |
1188 | ||
1189 | if (t2) { | |
1190 | r = safe_atou32(t2, &lease->t2); | |
e1ea665e | 1191 | if (r < 0) |
0339cd77 | 1192 | log_debug_errno(r, "Failed to parse T2 %s, ignoring: %m", t2); |
e1ea665e EY |
1193 | } |
1194 | ||
e37f74a6 | 1195 | if (client_id_hex) { |
ce088d6f | 1196 | r = unhexmem(client_id_hex, (size_t) -1, &lease->client_id, &lease->client_id_len); |
30494563 | 1197 | if (r < 0) |
0339cd77 | 1198 | log_debug_errno(r, "Failed to parse client ID %s, ignoring: %m", client_id_hex); |
e37f74a6 DW |
1199 | } |
1200 | ||
e43a8393 | 1201 | if (vendor_specific_hex) { |
ce088d6f | 1202 | r = unhexmem(vendor_specific_hex, (size_t) -1, &lease->vendor_specific, &lease->vendor_specific_len); |
e43a8393 | 1203 | if (r < 0) |
0339cd77 | 1204 | log_debug_errno(r, "Failed to parse vendor specific data %s, ignoring: %m", vendor_specific_hex); |
e43a8393 BG |
1205 | } |
1206 | ||
22805d92 | 1207 | for (i = 0; i <= SD_DHCP_OPTION_PRIVATE_LAST - SD_DHCP_OPTION_PRIVATE_BASE; i++) { |
e4735228 | 1208 | _cleanup_free_ void *data = NULL; |
a073309f AC |
1209 | size_t len; |
1210 | ||
1211 | if (!options[i]) | |
1212 | continue; | |
1213 | ||
ce088d6f | 1214 | r = unhexmem(options[i], (size_t) -1, &data, &len); |
0339cd77 LP |
1215 | if (r < 0) { |
1216 | log_debug_errno(r, "Failed to parse private DHCP option %s, ignoring: %m", options[i]); | |
1217 | continue; | |
1218 | } | |
a073309f | 1219 | |
22805d92 | 1220 | r = dhcp_lease_insert_private_option(lease, SD_DHCP_OPTION_PRIVATE_BASE + i, data, len); |
626be147 | 1221 | if (r < 0) |
a073309f AC |
1222 | return r; |
1223 | } | |
1224 | ||
1cc6c93a | 1225 | *ret = TAKE_PTR(lease); |
fe8db0c5 TG |
1226 | |
1227 | return 0; | |
1228 | } | |
9e64dd72 TG |
1229 | |
1230 | int dhcp_lease_set_default_subnet_mask(sd_dhcp_lease *lease) { | |
0339cd77 | 1231 | struct in_addr address, mask; |
df40eee8 | 1232 | int r; |
9e64dd72 TG |
1233 | |
1234 | assert(lease); | |
9e64dd72 | 1235 | |
0339cd77 LP |
1236 | if (lease->address == 0) |
1237 | return -ENODATA; | |
1238 | ||
df40eee8 | 1239 | address.s_addr = lease->address; |
9e64dd72 TG |
1240 | |
1241 | /* fall back to the default subnet masks based on address class */ | |
5a941f5f | 1242 | r = in4_addr_default_subnet_mask(&address, &mask); |
df40eee8 TG |
1243 | if (r < 0) |
1244 | return r; | |
9e64dd72 | 1245 | |
df40eee8 | 1246 | lease->subnet_mask = mask.s_addr; |
0339cd77 | 1247 | lease->have_subnet_mask = true; |
9e64dd72 TG |
1248 | |
1249 | return 0; | |
1250 | } | |
e37f74a6 | 1251 | |
0339cd77 | 1252 | int sd_dhcp_lease_get_client_id(sd_dhcp_lease *lease, const void **client_id, size_t *client_id_len) { |
e37f74a6 DW |
1253 | assert_return(lease, -EINVAL); |
1254 | assert_return(client_id, -EINVAL); | |
1255 | assert_return(client_id_len, -EINVAL); | |
1256 | ||
0339cd77 LP |
1257 | if (!lease->client_id) |
1258 | return -ENODATA; | |
1259 | ||
e37f74a6 DW |
1260 | *client_id = lease->client_id; |
1261 | *client_id_len = lease->client_id_len; | |
0339cd77 | 1262 | |
e37f74a6 DW |
1263 | return 0; |
1264 | } | |
1265 | ||
0339cd77 | 1266 | int dhcp_lease_set_client_id(sd_dhcp_lease *lease, const void *client_id, size_t client_id_len) { |
e37f74a6 | 1267 | assert_return(lease, -EINVAL); |
0339cd77 LP |
1268 | assert_return(client_id || client_id_len <= 0, -EINVAL); |
1269 | ||
1270 | if (client_id_len <= 0) | |
1271 | lease->client_id = mfree(lease->client_id); | |
1272 | else { | |
1273 | void *p; | |
e37f74a6 | 1274 | |
0339cd77 LP |
1275 | p = memdup(client_id, client_id_len); |
1276 | if (!p) | |
1277 | return -ENOMEM; | |
e37f74a6 | 1278 | |
0339cd77 LP |
1279 | free(lease->client_id); |
1280 | lease->client_id = p; | |
e37f74a6 DW |
1281 | lease->client_id_len = client_id_len; |
1282 | } | |
1283 | ||
1284 | return 0; | |
1285 | } | |
8eb9058d | 1286 | |
64d6c229 | 1287 | int sd_dhcp_lease_get_timezone(sd_dhcp_lease *lease, const char **tz) { |
8eb9058d | 1288 | assert_return(lease, -EINVAL); |
64d6c229 | 1289 | assert_return(tz, -EINVAL); |
8eb9058d LP |
1290 | |
1291 | if (!lease->timezone) | |
0339cd77 | 1292 | return -ENODATA; |
8eb9058d | 1293 | |
64d6c229 | 1294 | *tz = lease->timezone; |
8eb9058d LP |
1295 | return 0; |
1296 | } | |
f8693fc7 BG |
1297 | |
1298 | int sd_dhcp_route_get_destination(sd_dhcp_route *route, struct in_addr *destination) { | |
1299 | assert_return(route, -EINVAL); | |
1300 | assert_return(destination, -EINVAL); | |
1301 | ||
1302 | *destination = route->dst_addr; | |
1303 | return 0; | |
1304 | } | |
1305 | ||
1306 | int sd_dhcp_route_get_destination_prefix_length(sd_dhcp_route *route, uint8_t *length) { | |
1307 | assert_return(route, -EINVAL); | |
1308 | assert_return(length, -EINVAL); | |
1309 | ||
1310 | *length = route->dst_prefixlen; | |
1311 | return 0; | |
1312 | } | |
1313 | ||
1314 | int sd_dhcp_route_get_gateway(sd_dhcp_route *route, struct in_addr *gateway) { | |
1315 | assert_return(route, -EINVAL); | |
1316 | assert_return(gateway, -EINVAL); | |
1317 | ||
1318 | *gateway = route->gw_addr; | |
1319 | return 0; | |
1320 | } |