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Commit | Line | Data |
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53e1b683 | 1 | /* SPDX-License-Identifier: LGPL-2.1+ */ |
a6cc569e | 2 | /*** |
810adae9 | 3 | Copyright © 2013 Intel Corporation. All rights reserved. |
a6cc569e TG |
4 | ***/ |
5 | ||
07630cea | 6 | #include <arpa/inet.h> |
a6cc569e | 7 | #include <errno.h> |
a6cc569e | 8 | #include <stdio.h> |
0d536673 | 9 | #include <stdio_ext.h> |
07630cea LP |
10 | #include <stdlib.h> |
11 | #include <string.h> | |
12 | ||
13 | #include "sd-dhcp-lease.h" | |
a6cc569e | 14 | |
b5efdb8a | 15 | #include "alloc-util.h" |
07630cea LP |
16 | #include "dhcp-lease-internal.h" |
17 | #include "dhcp-protocol.h" | |
18 | #include "dns-domain.h" | |
686d13b9 | 19 | #include "env-file.h" |
3ffd4af2 | 20 | #include "fd-util.h" |
fe8db0c5 | 21 | #include "fileio.h" |
b11d6a7b | 22 | #include "hexdecoct.h" |
958b66ea | 23 | #include "hostname-util.h" |
07630cea | 24 | #include "in-addr-util.h" |
0339cd77 | 25 | #include "network-internal.h" |
6bedfcbb | 26 | #include "parse-util.h" |
d054f0a4 | 27 | #include "stdio-util.h" |
b11d6a7b | 28 | #include "string-util.h" |
51517f9e | 29 | #include "strv.h" |
e4de7287 | 30 | #include "tmpfile-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 | ||
f8862395 | 154 | int sd_dhcp_lease_get_router(sd_dhcp_lease *lease, const struct in_addr **addr) { |
a6cc569e TG |
155 | assert_return(lease, -EINVAL); |
156 | assert_return(addr, -EINVAL); | |
157 | ||
f8862395 | 158 | if (lease->router_size <= 0) |
0339cd77 | 159 | return -ENODATA; |
a6cc569e | 160 | |
f8862395 TH |
161 | *addr = lease->router; |
162 | return (int) lease->router_size; | |
a6cc569e TG |
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 | ||
8301aa0b YW |
251 | static sd_dhcp_lease *dhcp_lease_free(sd_dhcp_lease *lease) { |
252 | assert(lease); | |
3733eec3 LP |
253 | |
254 | while (lease->private_options) { | |
255 | struct sd_dhcp_raw_option *option = lease->private_options; | |
256 | ||
257 | LIST_REMOVE(options, lease->private_options, option); | |
258 | ||
259 | free(option->data); | |
260 | free(option); | |
a6cc569e TG |
261 | } |
262 | ||
e2975f85 | 263 | free(lease->root_path); |
f8862395 | 264 | free(lease->router); |
e2975f85 | 265 | free(lease->timezone); |
3733eec3 LP |
266 | free(lease->hostname); |
267 | free(lease->domainname); | |
268 | free(lease->dns); | |
269 | free(lease->ntp); | |
270 | free(lease->static_route); | |
271 | free(lease->client_id); | |
272 | free(lease->vendor_specific); | |
b85bc551 | 273 | strv_free(lease->search_domains); |
6b430fdb | 274 | return mfree(lease); |
a6cc569e TG |
275 | } |
276 | ||
8301aa0b YW |
277 | DEFINE_TRIVIAL_REF_UNREF_FUNC(sd_dhcp_lease, sd_dhcp_lease, dhcp_lease_free); |
278 | ||
0339cd77 | 279 | static int lease_parse_u32(const uint8_t *option, size_t len, uint32_t *ret, uint32_t min) { |
e140ae58 TG |
280 | assert(option); |
281 | assert(ret); | |
282 | ||
0339cd77 LP |
283 | if (len != 4) |
284 | return -EINVAL; | |
e140ae58 | 285 | |
0339cd77 LP |
286 | *ret = unaligned_read_be32((be32_t*) option); |
287 | if (*ret < min) | |
288 | *ret = min; | |
e140ae58 | 289 | |
0339cd77 | 290 | return 0; |
e140ae58 TG |
291 | } |
292 | ||
0339cd77 | 293 | static int lease_parse_u16(const uint8_t *option, size_t len, uint16_t *ret, uint16_t min) { |
e140ae58 TG |
294 | assert(option); |
295 | assert(ret); | |
296 | ||
0339cd77 LP |
297 | if (len != 2) |
298 | return -EINVAL; | |
e140ae58 | 299 | |
0339cd77 LP |
300 | *ret = unaligned_read_be16((be16_t*) option); |
301 | if (*ret < min) | |
302 | *ret = min; | |
f5c0c00f | 303 | |
0339cd77 | 304 | return 0; |
f5c0c00f TG |
305 | } |
306 | ||
0339cd77 | 307 | static int lease_parse_be32(const uint8_t *option, size_t len, be32_t *ret) { |
f5c0c00f TG |
308 | assert(option); |
309 | assert(ret); | |
310 | ||
0339cd77 LP |
311 | if (len != 4) |
312 | return -EINVAL; | |
f5c0c00f | 313 | |
0339cd77 LP |
314 | memcpy(ret, option, 4); |
315 | return 0; | |
f5c0c00f TG |
316 | } |
317 | ||
e140ae58 TG |
318 | static int lease_parse_string(const uint8_t *option, size_t len, char **ret) { |
319 | assert(option); | |
320 | assert(ret); | |
321 | ||
0339cd77 LP |
322 | if (len <= 0) |
323 | *ret = mfree(*ret); | |
324 | else { | |
e140ae58 TG |
325 | char *string; |
326 | ||
e989fd9b LP |
327 | /* |
328 | * One trailing NUL byte is OK, we don't mind. See: | |
329 | * https://github.com/systemd/systemd/issues/1337 | |
330 | */ | |
331 | if (memchr(option, 0, len - 1)) | |
43f447b1 LP |
332 | return -EINVAL; |
333 | ||
e989fd9b | 334 | string = strndup((const char *) option, len); |
e140ae58 | 335 | if (!string) |
43f447b1 | 336 | return -ENOMEM; |
e140ae58 | 337 | |
09348d40 | 338 | free_and_replace(*ret, string); |
0339cd77 | 339 | } |
e140ae58 TG |
340 | |
341 | return 0; | |
342 | } | |
343 | ||
978c6477 LP |
344 | static int lease_parse_domain(const uint8_t *option, size_t len, char **ret) { |
345 | _cleanup_free_ char *name = NULL, *normalized = NULL; | |
346 | int r; | |
347 | ||
348 | assert(option); | |
349 | assert(ret); | |
350 | ||
351 | r = lease_parse_string(option, len, &name); | |
352 | if (r < 0) | |
353 | return r; | |
354 | if (!name) { | |
355 | *ret = mfree(*ret); | |
356 | return 0; | |
357 | } | |
358 | ||
7470cc4c | 359 | r = dns_name_normalize(name, 0, &normalized); |
978c6477 LP |
360 | if (r < 0) |
361 | return r; | |
362 | ||
363 | if (is_localhost(normalized)) | |
364 | return -EINVAL; | |
365 | ||
366 | if (dns_name_is_root(normalized)) | |
367 | return -EINVAL; | |
368 | ||
f9ecfd3b | 369 | free_and_replace(*ret, normalized); |
978c6477 LP |
370 | |
371 | return 0; | |
372 | } | |
373 | ||
072320ea | 374 | static int lease_parse_in_addrs(const uint8_t *option, size_t len, struct in_addr **ret, size_t *n_ret) { |
e140ae58 TG |
375 | assert(option); |
376 | assert(ret); | |
0339cd77 | 377 | assert(n_ret); |
e140ae58 | 378 | |
0339cd77 LP |
379 | if (len <= 0) { |
380 | *ret = mfree(*ret); | |
381 | *n_ret = 0; | |
382 | } else { | |
383 | size_t n_addresses; | |
e140ae58 TG |
384 | struct in_addr *addresses; |
385 | ||
0339cd77 LP |
386 | if (len % 4 != 0) |
387 | return -EINVAL; | |
e140ae58 | 388 | |
0339cd77 LP |
389 | n_addresses = len / 4; |
390 | ||
391 | addresses = newdup(struct in_addr, option, n_addresses); | |
e140ae58 TG |
392 | if (!addresses) |
393 | return -ENOMEM; | |
394 | ||
395 | free(*ret); | |
396 | *ret = addresses; | |
0339cd77 | 397 | *n_ret = n_addresses; |
e140ae58 TG |
398 | } |
399 | ||
400 | return 0; | |
401 | } | |
402 | ||
0339cd77 LP |
403 | static int lease_parse_routes( |
404 | const uint8_t *option, size_t len, | |
405 | struct sd_dhcp_route **routes, size_t *routes_size, size_t *routes_allocated) { | |
e1ea665e EY |
406 | |
407 | struct in_addr addr; | |
408 | ||
0339cd77 | 409 | assert(option || len <= 0); |
e1ea665e EY |
410 | assert(routes); |
411 | assert(routes_size); | |
412 | assert(routes_allocated); | |
413 | ||
0339cd77 | 414 | if (len <= 0) |
e1ea665e EY |
415 | return 0; |
416 | ||
417 | if (len % 8 != 0) | |
418 | return -EINVAL; | |
419 | ||
420 | if (!GREEDY_REALLOC(*routes, *routes_allocated, *routes_size + (len / 8))) | |
421 | return -ENOMEM; | |
422 | ||
423 | while (len >= 8) { | |
424 | struct sd_dhcp_route *route = *routes + *routes_size; | |
1caa12d0 | 425 | int r; |
e1ea665e | 426 | |
8cdc46e7 | 427 | route->option = SD_DHCP_OPTION_STATIC_ROUTE; |
5a941f5f | 428 | r = in4_addr_default_prefixlen((struct in_addr*) option, &route->dst_prefixlen); |
1caa12d0 | 429 | if (r < 0) { |
0339cd77 | 430 | log_debug("Failed to determine destination prefix length from class based IP, ignoring"); |
e1ea665e EY |
431 | continue; |
432 | } | |
433 | ||
0339cd77 | 434 | assert_se(lease_parse_be32(option, 4, &addr.s_addr) >= 0); |
e1ea665e EY |
435 | route->dst_addr = inet_makeaddr(inet_netof(addr), 0); |
436 | option += 4; | |
437 | ||
0339cd77 | 438 | assert_se(lease_parse_be32(option, 4, &route->gw_addr.s_addr) >= 0); |
e1ea665e EY |
439 | option += 4; |
440 | ||
441 | len -= 8; | |
442 | (*routes_size)++; | |
443 | } | |
444 | ||
445 | return 0; | |
446 | } | |
447 | ||
448 | /* parses RFC3442 Classless Static Route Option */ | |
0339cd77 LP |
449 | static int lease_parse_classless_routes( |
450 | const uint8_t *option, size_t len, | |
451 | struct sd_dhcp_route **routes, size_t *routes_size, size_t *routes_allocated) { | |
e1ea665e | 452 | |
0339cd77 | 453 | assert(option || len <= 0); |
e1ea665e EY |
454 | assert(routes); |
455 | assert(routes_size); | |
456 | assert(routes_allocated); | |
457 | ||
0339cd77 LP |
458 | if (len <= 0) |
459 | return 0; | |
460 | ||
e1ea665e EY |
461 | /* option format: (subnet-mask-width significant-subnet-octets gateway-ip)* */ |
462 | ||
463 | while (len > 0) { | |
464 | uint8_t dst_octets; | |
465 | struct sd_dhcp_route *route; | |
466 | ||
467 | if (!GREEDY_REALLOC(*routes, *routes_allocated, *routes_size + 1)) | |
0339cd77 | 468 | return -ENOMEM; |
e1ea665e EY |
469 | |
470 | route = *routes + *routes_size; | |
8cdc46e7 | 471 | route->option = SD_DHCP_OPTION_CLASSLESS_STATIC_ROUTE; |
e1ea665e EY |
472 | |
473 | dst_octets = (*option == 0 ? 0 : ((*option - 1) / 8) + 1); | |
474 | route->dst_prefixlen = *option; | |
475 | option++; | |
476 | len--; | |
477 | ||
478 | /* can't have more than 4 octets in IPv4 */ | |
479 | if (dst_octets > 4 || len < dst_octets) | |
480 | return -EINVAL; | |
481 | ||
482 | route->dst_addr.s_addr = 0; | |
483 | memcpy(&route->dst_addr.s_addr, option, dst_octets); | |
484 | option += dst_octets; | |
485 | len -= dst_octets; | |
486 | ||
487 | if (len < 4) | |
488 | return -EINVAL; | |
489 | ||
b14fff6e | 490 | assert_se(lease_parse_be32(option, 4, &route->gw_addr.s_addr) >= 0); |
e1ea665e EY |
491 | option += 4; |
492 | len -= 4; | |
493 | ||
494 | (*routes_size)++; | |
495 | } | |
496 | ||
497 | return 0; | |
498 | } | |
499 | ||
e4735228 | 500 | int dhcp_lease_parse_options(uint8_t code, uint8_t len, const void *option, void *userdata) { |
2d03c0b8 | 501 | sd_dhcp_lease *lease = userdata; |
e140ae58 TG |
502 | int r; |
503 | ||
504 | assert(lease); | |
a6cc569e TG |
505 | |
506 | switch(code) { | |
507 | ||
22805d92 | 508 | case SD_DHCP_OPTION_IP_ADDRESS_LEASE_TIME: |
0339cd77 LP |
509 | r = lease_parse_u32(option, len, &lease->lifetime, 1); |
510 | if (r < 0) | |
511 | log_debug_errno(r, "Failed to parse lease time, ignoring: %m"); | |
512 | ||
a6cc569e TG |
513 | break; |
514 | ||
22805d92 | 515 | case SD_DHCP_OPTION_SERVER_IDENTIFIER: |
0339cd77 LP |
516 | r = lease_parse_be32(option, len, &lease->server_address); |
517 | if (r < 0) | |
518 | log_debug_errno(r, "Failed to parse server identifier, ignoring: %m"); | |
519 | ||
a6cc569e TG |
520 | break; |
521 | ||
22805d92 | 522 | case SD_DHCP_OPTION_SUBNET_MASK: |
0339cd77 LP |
523 | r = lease_parse_be32(option, len, &lease->subnet_mask); |
524 | if (r < 0) | |
525 | log_debug_errno(r, "Failed to parse subnet mask, ignoring: %m"); | |
526 | else | |
527 | lease->have_subnet_mask = true; | |
a6cc569e TG |
528 | break; |
529 | ||
22805d92 | 530 | case SD_DHCP_OPTION_BROADCAST: |
0339cd77 LP |
531 | r = lease_parse_be32(option, len, &lease->broadcast); |
532 | if (r < 0) | |
533 | log_debug_errno(r, "Failed to parse broadcast address, ignoring: %m"); | |
534 | else | |
535 | lease->have_broadcast = true; | |
f5c0c00f TG |
536 | break; |
537 | ||
22805d92 | 538 | case SD_DHCP_OPTION_ROUTER: |
072320ea | 539 | r = lease_parse_in_addrs(option, len, &lease->router, &lease->router_size); |
f8862395 TH |
540 | if (r < 0) |
541 | log_debug_errno(r, "Failed to parse router addresses, ignoring: %m"); | |
a6cc569e TG |
542 | break; |
543 | ||
22805d92 | 544 | case SD_DHCP_OPTION_DOMAIN_NAME_SERVER: |
072320ea | 545 | r = lease_parse_in_addrs(option, len, &lease->dns, &lease->dns_size); |
0339cd77 LP |
546 | if (r < 0) |
547 | log_debug_errno(r, "Failed to parse DNS server, ignoring: %m"); | |
a6cc569e TG |
548 | break; |
549 | ||
22805d92 | 550 | case SD_DHCP_OPTION_NTP_SERVER: |
072320ea | 551 | r = lease_parse_in_addrs(option, len, &lease->ntp, &lease->ntp_size); |
0339cd77 LP |
552 | if (r < 0) |
553 | log_debug_errno(r, "Failed to parse NTP server, ignoring: %m"); | |
f5c0c00f TG |
554 | break; |
555 | ||
22805d92 | 556 | case SD_DHCP_OPTION_STATIC_ROUTE: |
0339cd77 LP |
557 | r = lease_parse_routes(option, len, &lease->static_route, &lease->static_route_size, &lease->static_route_allocated); |
558 | if (r < 0) | |
559 | log_debug_errno(r, "Failed to parse static routes, ignoring: %m"); | |
f5c0c00f TG |
560 | break; |
561 | ||
22805d92 | 562 | case SD_DHCP_OPTION_INTERFACE_MTU: |
0339cd77 LP |
563 | r = lease_parse_u16(option, len, &lease->mtu, 68); |
564 | if (r < 0) | |
565 | log_debug_errno(r, "Failed to parse MTU, ignoring: %m"); | |
955d99ed | 566 | if (lease->mtu < DHCP_DEFAULT_MIN_SIZE) { |
4dd53da9 | 567 | log_debug("MTU value of %" PRIu16 " too small. Using default MTU value of %d instead.", lease->mtu, DHCP_DEFAULT_MIN_SIZE); |
955d99ed MG |
568 | lease->mtu = DHCP_DEFAULT_MIN_SIZE; |
569 | } | |
570 | ||
f5c0c00f TG |
571 | break; |
572 | ||
978c6477 LP |
573 | case SD_DHCP_OPTION_DOMAIN_NAME: |
574 | r = lease_parse_domain(option, len, &lease->domainname); | |
0339cd77 LP |
575 | if (r < 0) { |
576 | log_debug_errno(r, "Failed to parse domain name, ignoring: %m"); | |
577 | return 0; | |
578 | } | |
a6cc569e | 579 | |
784d9b9c | 580 | break; |
784d9b9c | 581 | |
b85bc551 DW |
582 | case SD_DHCP_OPTION_DOMAIN_SEARCH_LIST: |
583 | r = dhcp_lease_parse_search_domains(option, len, &lease->search_domains); | |
584 | if (r < 0) | |
585 | log_debug_errno(r, "Failed to parse Domain Search List, ignoring: %m"); | |
586 | break; | |
587 | ||
978c6477 LP |
588 | case SD_DHCP_OPTION_HOST_NAME: |
589 | r = lease_parse_domain(option, len, &lease->hostname); | |
0339cd77 LP |
590 | if (r < 0) { |
591 | log_debug_errno(r, "Failed to parse host name, ignoring: %m"); | |
592 | return 0; | |
593 | } | |
a6cc569e | 594 | |
784d9b9c | 595 | break; |
ce78df79 | 596 | |
22805d92 | 597 | case SD_DHCP_OPTION_ROOT_PATH: |
0339cd77 LP |
598 | r = lease_parse_string(option, len, &lease->root_path); |
599 | if (r < 0) | |
600 | log_debug_errno(r, "Failed to parse root path, ignoring: %m"); | |
601 | break; | |
ce78df79 | 602 | |
22805d92 | 603 | case SD_DHCP_OPTION_RENEWAL_T1_TIME: |
0339cd77 LP |
604 | r = lease_parse_u32(option, len, &lease->t1, 1); |
605 | if (r < 0) | |
606 | log_debug_errno(r, "Failed to parse T1 time, ignoring: %m"); | |
a6cc569e TG |
607 | break; |
608 | ||
22805d92 | 609 | case SD_DHCP_OPTION_REBINDING_T2_TIME: |
0339cd77 LP |
610 | r = lease_parse_u32(option, len, &lease->t2, 1); |
611 | if (r < 0) | |
612 | log_debug_errno(r, "Failed to parse T2 time, ignoring: %m"); | |
a6cc569e | 613 | break; |
e1ea665e | 614 | |
22805d92 | 615 | case SD_DHCP_OPTION_CLASSLESS_STATIC_ROUTE: |
0339cd77 | 616 | r = lease_parse_classless_routes( |
2d03c0b8 LP |
617 | option, len, |
618 | &lease->static_route, | |
619 | &lease->static_route_size, | |
620 | &lease->static_route_allocated); | |
0339cd77 LP |
621 | if (r < 0) |
622 | log_debug_errno(r, "Failed to parse classless routes, ignoring: %m"); | |
623 | break; | |
e43a8393 | 624 | |
22805d92 | 625 | case SD_DHCP_OPTION_NEW_TZDB_TIMEZONE: { |
8eb9058d LP |
626 | _cleanup_free_ char *tz = NULL; |
627 | ||
628 | r = lease_parse_string(option, len, &tz); | |
0339cd77 LP |
629 | if (r < 0) { |
630 | log_debug_errno(r, "Failed to parse timezone option, ignoring: %m"); | |
631 | return 0; | |
632 | } | |
8eb9058d | 633 | |
089fb865 | 634 | if (!timezone_is_valid(tz, LOG_DEBUG)) { |
0339cd77 LP |
635 | log_debug_errno(r, "Timezone is not valid, ignoring: %m"); |
636 | return 0; | |
637 | } | |
8eb9058d | 638 | |
f9ecfd3b | 639 | free_and_replace(lease->timezone, tz); |
0339cd77 | 640 | |
8eb9058d LP |
641 | break; |
642 | } | |
643 | ||
22805d92 | 644 | case SD_DHCP_OPTION_VENDOR_SPECIFIC: |
2d03c0b8 | 645 | |
0339cd77 LP |
646 | if (len <= 0) |
647 | lease->vendor_specific = mfree(lease->vendor_specific); | |
648 | else { | |
649 | void *p; | |
650 | ||
651 | p = memdup(option, len); | |
652 | if (!p) | |
e43a8393 | 653 | return -ENOMEM; |
e43a8393 | 654 | |
0339cd77 LP |
655 | free(lease->vendor_specific); |
656 | lease->vendor_specific = p; | |
657 | } | |
7e753d9d | 658 | |
0339cd77 LP |
659 | lease->vendor_specific_len = len; |
660 | break; | |
7e753d9d | 661 | |
22805d92 | 662 | case SD_DHCP_OPTION_PRIVATE_BASE ... SD_DHCP_OPTION_PRIVATE_LAST: |
7e753d9d AC |
663 | r = dhcp_lease_insert_private_option(lease, code, option, len); |
664 | if (r < 0) | |
665 | return r; | |
0339cd77 LP |
666 | |
667 | break; | |
668 | ||
669 | default: | |
f693e9b3 | 670 | log_debug("Ignoring option DHCP option %"PRIu8" while parsing.", code); |
0339cd77 | 671 | break; |
a6cc569e TG |
672 | } |
673 | ||
674 | return 0; | |
675 | } | |
676 | ||
b85bc551 DW |
677 | /* Parses compressed domain names. */ |
678 | int dhcp_lease_parse_search_domains(const uint8_t *option, size_t len, char ***domains) { | |
679 | _cleanup_strv_free_ char **names = NULL; | |
680 | size_t pos = 0, cnt = 0; | |
681 | int r; | |
682 | ||
683 | assert(domains); | |
684 | assert_return(option && len > 0, -ENODATA); | |
685 | ||
686 | while (pos < len) { | |
687 | _cleanup_free_ char *name = NULL; | |
688 | size_t n = 0, allocated = 0; | |
689 | size_t jump_barrier = pos, next_chunk = 0; | |
690 | bool first = true; | |
691 | ||
692 | for (;;) { | |
693 | uint8_t c; | |
694 | c = option[pos++]; | |
695 | ||
696 | if (c == 0) { | |
697 | /* End of name */ | |
698 | break; | |
699 | } else if (c <= 63) { | |
700 | const char *label; | |
701 | ||
702 | /* Literal label */ | |
703 | label = (const char*) (option + pos); | |
704 | pos += c; | |
705 | if (pos >= len) | |
706 | return -EBADMSG; | |
707 | ||
708 | if (!GREEDY_REALLOC(name, allocated, n + !first + DNS_LABEL_ESCAPED_MAX)) | |
709 | return -ENOMEM; | |
710 | ||
711 | if (first) | |
712 | first = false; | |
713 | else | |
714 | name[n++] = '.'; | |
715 | ||
716 | r = dns_label_escape(label, c, name + n, DNS_LABEL_ESCAPED_MAX); | |
717 | if (r < 0) | |
718 | return r; | |
719 | ||
720 | n += r; | |
721 | } else if ((c & 0xc0) == 0xc0) { | |
722 | /* Pointer */ | |
723 | ||
724 | uint8_t d; | |
725 | uint16_t ptr; | |
726 | ||
727 | if (pos >= len) | |
728 | return -EBADMSG; | |
729 | ||
730 | d = option[pos++]; | |
731 | ptr = (uint16_t) (c & ~0xc0) << 8 | (uint16_t) d; | |
732 | ||
733 | /* Jumps are limited to a "prior occurrence" (RFC-1035 4.1.4) */ | |
734 | if (ptr >= jump_barrier) | |
735 | return -EBADMSG; | |
736 | jump_barrier = ptr; | |
737 | ||
738 | /* Save current location so we don't end up re-parsing what's parsed so far. */ | |
739 | if (next_chunk == 0) | |
740 | next_chunk = pos; | |
741 | ||
742 | pos = ptr; | |
743 | } else | |
744 | return -EBADMSG; | |
745 | } | |
746 | ||
747 | if (!GREEDY_REALLOC(name, allocated, n + 1)) | |
748 | return -ENOMEM; | |
749 | name[n] = 0; | |
750 | ||
751 | r = strv_extend(&names, name); | |
752 | if (r < 0) | |
753 | return r; | |
754 | ||
755 | cnt++; | |
756 | ||
757 | if (next_chunk != 0) | |
758 | pos = next_chunk; | |
759 | } | |
760 | ||
ae2a15bc | 761 | *domains = TAKE_PTR(names); |
b85bc551 DW |
762 | |
763 | return cnt; | |
764 | } | |
765 | ||
0339cd77 | 766 | int dhcp_lease_insert_private_option(sd_dhcp_lease *lease, uint8_t tag, const void *data, uint8_t len) { |
7e753d9d AC |
767 | struct sd_dhcp_raw_option *cur, *option; |
768 | ||
0339cd77 LP |
769 | assert(lease); |
770 | ||
7e753d9d AC |
771 | LIST_FOREACH(options, cur, lease->private_options) { |
772 | if (tag < cur->tag) | |
773 | break; | |
0339cd77 LP |
774 | if (tag == cur->tag) { |
775 | log_debug("Ignoring duplicate option, tagged %i.", tag); | |
7e753d9d AC |
776 | return 0; |
777 | } | |
778 | } | |
779 | ||
780 | option = new(struct sd_dhcp_raw_option, 1); | |
781 | if (!option) | |
782 | return -ENOMEM; | |
783 | ||
784 | option->tag = tag; | |
785 | option->length = len; | |
786 | option->data = memdup(data, len); | |
787 | if (!option->data) { | |
788 | free(option); | |
789 | return -ENOMEM; | |
790 | } | |
791 | ||
792 | LIST_INSERT_BEFORE(options, lease->private_options, cur, option); | |
7e753d9d AC |
793 | return 0; |
794 | } | |
795 | ||
a6cc569e | 796 | int dhcp_lease_new(sd_dhcp_lease **ret) { |
6e00a806 | 797 | sd_dhcp_lease *lease; |
a6cc569e TG |
798 | |
799 | lease = new0(sd_dhcp_lease, 1); | |
800 | if (!lease) | |
801 | return -ENOMEM; | |
802 | ||
3733eec3 | 803 | lease->n_ref = 1; |
a6cc569e TG |
804 | |
805 | *ret = lease; | |
a6cc569e TG |
806 | return 0; |
807 | } | |
fe8db0c5 | 808 | |
bd91b83e | 809 | int dhcp_lease_save(sd_dhcp_lease *lease, const char *lease_file) { |
fe8db0c5 TG |
810 | _cleanup_free_ char *temp_path = NULL; |
811 | _cleanup_fclose_ FILE *f = NULL; | |
a073309f | 812 | struct sd_dhcp_raw_option *option; |
fe8db0c5 | 813 | struct in_addr address; |
a2ba62c7 | 814 | const struct in_addr *addresses; |
e4735228 | 815 | const void *client_id, *data; |
e43a8393 | 816 | size_t client_id_len, data_len; |
189255d2 | 817 | char sbuf[INET_ADDRSTRLEN]; |
fe8db0c5 TG |
818 | const char *string; |
819 | uint16_t mtu; | |
f8693fc7 | 820 | _cleanup_free_ sd_dhcp_route **routes = NULL; |
b85bc551 | 821 | char **search_domains = NULL; |
0339cd77 | 822 | uint32_t t1, t2, lifetime; |
fe8db0c5 TG |
823 | int r; |
824 | ||
825 | assert(lease); | |
826 | assert(lease_file); | |
827 | ||
fe8db0c5 TG |
828 | r = fopen_temporary(lease_file, &f, &temp_path); |
829 | if (r < 0) | |
dacd6cee | 830 | goto fail; |
fe8db0c5 | 831 | |
0d536673 LP |
832 | (void) __fsetlocking(f, FSETLOCKING_BYCALLER); |
833 | (void) fchmod(fileno(f), 0644); | |
fe8db0c5 | 834 | |
fe8db0c5 | 835 | fprintf(f, |
0339cd77 | 836 | "# This is private data. Do not parse.\n"); |
fe8db0c5 | 837 | |
0339cd77 LP |
838 | r = sd_dhcp_lease_get_address(lease, &address); |
839 | if (r >= 0) | |
189255d2 | 840 | fprintf(f, "ADDRESS=%s\n", inet_ntop(AF_INET, &address, sbuf, sizeof(sbuf))); |
fe8db0c5 | 841 | |
0339cd77 LP |
842 | r = sd_dhcp_lease_get_netmask(lease, &address); |
843 | if (r >= 0) | |
189255d2 | 844 | fprintf(f, "NETMASK=%s\n", inet_ntop(AF_INET, &address, sbuf, sizeof(sbuf))); |
fe8db0c5 | 845 | |
f8862395 TH |
846 | r = sd_dhcp_lease_get_router(lease, &addresses); |
847 | if (r > 0) { | |
848 | fputs("ROUTER=", f); | |
072320ea | 849 | serialize_in_addrs(f, addresses, r, false, NULL); |
f8862395 TH |
850 | fputc('\n', f); |
851 | } | |
8ddbeaa2 | 852 | |
0ad853bc | 853 | r = sd_dhcp_lease_get_server_identifier(lease, &address); |
109731eb | 854 | if (r >= 0) |
189255d2 | 855 | fprintf(f, "SERVER_ADDRESS=%s\n", inet_ntop(AF_INET, &address, sbuf, sizeof(sbuf))); |
0ad853bc | 856 | |
8e34a618 | 857 | r = sd_dhcp_lease_get_next_server(lease, &address); |
109731eb | 858 | if (r >= 0) |
189255d2 | 859 | fprintf(f, "NEXT_SERVER=%s\n", inet_ntop(AF_INET, &address, sbuf, sizeof(sbuf))); |
8e34a618 | 860 | |
0339cd77 LP |
861 | r = sd_dhcp_lease_get_broadcast(lease, &address); |
862 | if (r >= 0) | |
189255d2 | 863 | fprintf(f, "BROADCAST=%s\n", inet_ntop(AF_INET, &address, sbuf, sizeof(sbuf))); |
0339cd77 | 864 | |
fe8db0c5 TG |
865 | r = sd_dhcp_lease_get_mtu(lease, &mtu); |
866 | if (r >= 0) | |
867 | fprintf(f, "MTU=%" PRIu16 "\n", mtu); | |
868 | ||
0339cd77 LP |
869 | r = sd_dhcp_lease_get_t1(lease, &t1); |
870 | if (r >= 0) | |
871 | fprintf(f, "T1=%" PRIu32 "\n", t1); | |
872 | ||
873 | r = sd_dhcp_lease_get_t2(lease, &t2); | |
109731eb | 874 | if (r >= 0) |
0339cd77 LP |
875 | fprintf(f, "T2=%" PRIu32 "\n", t2); |
876 | ||
877 | r = sd_dhcp_lease_get_lifetime(lease, &lifetime); | |
878 | if (r >= 0) | |
879 | fprintf(f, "LIFETIME=%" PRIu32 "\n", lifetime); | |
880 | ||
881 | r = sd_dhcp_lease_get_dns(lease, &addresses); | |
882 | if (r > 0) { | |
0d536673 | 883 | fputs("DNS=", f); |
072320ea | 884 | serialize_in_addrs(f, addresses, r, false, NULL); |
f8862395 | 885 | fputc('\n', f); |
0339cd77 | 886 | } |
109731eb | 887 | |
a2ba62c7 | 888 | r = sd_dhcp_lease_get_ntp(lease, &addresses); |
0339cd77 | 889 | if (r > 0) { |
0d536673 | 890 | fputs("NTP=", f); |
072320ea | 891 | serialize_in_addrs(f, addresses, r, false, NULL); |
f8862395 | 892 | fputc('\n', f); |
0339cd77 | 893 | } |
fe8db0c5 TG |
894 | |
895 | r = sd_dhcp_lease_get_domainname(lease, &string); | |
896 | if (r >= 0) | |
897 | fprintf(f, "DOMAINNAME=%s\n", string); | |
898 | ||
b85bc551 DW |
899 | r = sd_dhcp_lease_get_search_domains(lease, &search_domains); |
900 | if (r > 0) { | |
0d536673 | 901 | fputs("DOMAIN_SEARCH_LIST=", f); |
b85bc551 | 902 | fputstrv(f, search_domains, NULL, NULL); |
f8862395 | 903 | fputc('\n', f); |
b85bc551 DW |
904 | } |
905 | ||
fe8db0c5 TG |
906 | r = sd_dhcp_lease_get_hostname(lease, &string); |
907 | if (r >= 0) | |
908 | fprintf(f, "HOSTNAME=%s\n", string); | |
909 | ||
ce78df79 TG |
910 | r = sd_dhcp_lease_get_root_path(lease, &string); |
911 | if (r >= 0) | |
912 | fprintf(f, "ROOT_PATH=%s\n", string); | |
913 | ||
a2ba62c7 | 914 | r = sd_dhcp_lease_get_routes(lease, &routes); |
0339cd77 | 915 | if (r > 0) |
a2ba62c7 | 916 | serialize_dhcp_routes(f, "ROUTES", routes, r); |
e1ea665e | 917 | |
8eb9058d LP |
918 | r = sd_dhcp_lease_get_timezone(lease, &string); |
919 | if (r >= 0) | |
920 | fprintf(f, "TIMEZONE=%s\n", string); | |
921 | ||
e37f74a6 DW |
922 | r = sd_dhcp_lease_get_client_id(lease, &client_id, &client_id_len); |
923 | if (r >= 0) { | |
3587161a | 924 | _cleanup_free_ char *client_id_hex = NULL; |
e37f74a6 | 925 | |
dde8bb32 | 926 | client_id_hex = hexmem(client_id, client_id_len); |
e37f74a6 DW |
927 | if (!client_id_hex) { |
928 | r = -ENOMEM; | |
dacd6cee | 929 | goto fail; |
e37f74a6 DW |
930 | } |
931 | fprintf(f, "CLIENTID=%s\n", client_id_hex); | |
932 | } | |
933 | ||
e43a8393 BG |
934 | r = sd_dhcp_lease_get_vendor_specific(lease, &data, &data_len); |
935 | if (r >= 0) { | |
936 | _cleanup_free_ char *option_hex = NULL; | |
937 | ||
938 | option_hex = hexmem(data, data_len); | |
939 | if (!option_hex) { | |
940 | r = -ENOMEM; | |
dacd6cee | 941 | goto fail; |
e43a8393 BG |
942 | } |
943 | fprintf(f, "VENDOR_SPECIFIC=%s\n", option_hex); | |
944 | } | |
945 | ||
a073309f | 946 | LIST_FOREACH(options, option, lease->private_options) { |
dbcb4a90 | 947 | char key[STRLEN("OPTION_000")+1]; |
0339cd77 | 948 | |
d054f0a4 | 949 | xsprintf(key, "OPTION_%" PRIu8, option->tag); |
a073309f AC |
950 | r = serialize_dhcp_option(f, key, option->data, option->length); |
951 | if (r < 0) | |
952 | goto fail; | |
953 | } | |
954 | ||
dacd6cee LP |
955 | r = fflush_and_check(f); |
956 | if (r < 0) | |
957 | goto fail; | |
fe8db0c5 | 958 | |
dacd6cee | 959 | if (rename(temp_path, lease_file) < 0) { |
fe8db0c5 | 960 | r = -errno; |
dacd6cee | 961 | goto fail; |
fe8db0c5 TG |
962 | } |
963 | ||
dacd6cee LP |
964 | return 0; |
965 | ||
966 | fail: | |
967 | if (temp_path) | |
968 | (void) unlink(temp_path); | |
fe8db0c5 | 969 | |
dacd6cee | 970 | return log_error_errno(r, "Failed to save lease data %s: %m", lease_file); |
fe8db0c5 TG |
971 | } |
972 | ||
bd91b83e | 973 | int dhcp_lease_load(sd_dhcp_lease **ret, const char *lease_file) { |
0339cd77 | 974 | |
4afd3348 | 975 | _cleanup_(sd_dhcp_lease_unrefp) sd_dhcp_lease *lease = NULL; |
0339cd77 LP |
976 | _cleanup_free_ char |
977 | *address = NULL, | |
978 | *router = NULL, | |
979 | *netmask = NULL, | |
980 | *server_address = NULL, | |
981 | *next_server = NULL, | |
982 | *broadcast = NULL, | |
983 | *dns = NULL, | |
984 | *ntp = NULL, | |
985 | *mtu = NULL, | |
986 | *routes = NULL, | |
b85bc551 | 987 | *domains = NULL, |
0339cd77 LP |
988 | *client_id_hex = NULL, |
989 | *vendor_specific_hex = NULL, | |
990 | *lifetime = NULL, | |
991 | *t1 = NULL, | |
992 | *t2 = NULL, | |
22805d92 | 993 | *options[SD_DHCP_OPTION_PRIVATE_LAST - SD_DHCP_OPTION_PRIVATE_BASE + 1] = {}; |
0339cd77 | 994 | |
a073309f | 995 | int r, i; |
fe8db0c5 TG |
996 | |
997 | assert(lease_file); | |
998 | assert(ret); | |
999 | ||
1000 | r = dhcp_lease_new(&lease); | |
1001 | if (r < 0) | |
1002 | return r; | |
1003 | ||
aa8fbc74 | 1004 | r = parse_env_file(NULL, lease_file, |
fe8db0c5 TG |
1005 | "ADDRESS", &address, |
1006 | "ROUTER", &router, | |
1007 | "NETMASK", &netmask, | |
0ad853bc | 1008 | "SERVER_IDENTIFIER", &server_address, |
8e34a618 | 1009 | "NEXT_SERVER", &next_server, |
0339cd77 | 1010 | "BROADCAST", &broadcast, |
109731eb TG |
1011 | "DNS", &dns, |
1012 | "NTP", &ntp, | |
fe8db0c5 TG |
1013 | "MTU", &mtu, |
1014 | "DOMAINNAME", &lease->domainname, | |
1015 | "HOSTNAME", &lease->hostname, | |
b85bc551 | 1016 | "DOMAIN_SEARCH_LIST", &domains, |
ce78df79 | 1017 | "ROOT_PATH", &lease->root_path, |
e1ea665e | 1018 | "ROUTES", &routes, |
e37f74a6 | 1019 | "CLIENTID", &client_id_hex, |
8eb9058d | 1020 | "TIMEZONE", &lease->timezone, |
e43a8393 | 1021 | "VENDOR_SPECIFIC", &vendor_specific_hex, |
0339cd77 LP |
1022 | "LIFETIME", &lifetime, |
1023 | "T1", &t1, | |
1024 | "T2", &t2, | |
a073309f AC |
1025 | "OPTION_224", &options[0], |
1026 | "OPTION_225", &options[1], | |
1027 | "OPTION_226", &options[2], | |
1028 | "OPTION_227", &options[3], | |
1029 | "OPTION_228", &options[4], | |
1030 | "OPTION_229", &options[5], | |
1031 | "OPTION_230", &options[6], | |
1032 | "OPTION_231", &options[7], | |
1033 | "OPTION_232", &options[8], | |
1034 | "OPTION_233", &options[9], | |
1035 | "OPTION_234", &options[10], | |
1036 | "OPTION_235", &options[11], | |
1037 | "OPTION_236", &options[12], | |
1038 | "OPTION_237", &options[13], | |
1039 | "OPTION_238", &options[14], | |
1040 | "OPTION_239", &options[15], | |
1041 | "OPTION_240", &options[16], | |
1042 | "OPTION_241", &options[17], | |
1043 | "OPTION_242", &options[18], | |
1044 | "OPTION_243", &options[19], | |
1045 | "OPTION_244", &options[20], | |
1046 | "OPTION_245", &options[21], | |
1047 | "OPTION_246", &options[22], | |
1048 | "OPTION_247", &options[23], | |
1049 | "OPTION_248", &options[24], | |
1050 | "OPTION_249", &options[25], | |
1051 | "OPTION_250", &options[26], | |
1052 | "OPTION_251", &options[27], | |
1053 | "OPTION_252", &options[28], | |
1054 | "OPTION_253", &options[29], | |
13df9c39 | 1055 | "OPTION_254", &options[30]); |
fe8db0c5 TG |
1056 | if (r < 0) |
1057 | return r; | |
1058 | ||
0339cd77 LP |
1059 | if (address) { |
1060 | r = inet_pton(AF_INET, address, &lease->address); | |
1061 | if (r <= 0) | |
e26ea7fc | 1062 | log_debug("Failed to parse address %s, ignoring.", address); |
0339cd77 | 1063 | } |
fe8db0c5 | 1064 | |
8ddbeaa2 | 1065 | if (router) { |
f8862395 TH |
1066 | r = deserialize_in_addrs(&lease->router, router); |
1067 | if (r < 0) | |
1068 | log_debug_errno(r, "Failed to deserialize router addresses %s, ignoring: %m", router); | |
1069 | else | |
1070 | lease->router_size = r; | |
8ddbeaa2 | 1071 | } |
fe8db0c5 | 1072 | |
0339cd77 LP |
1073 | if (netmask) { |
1074 | r = inet_pton(AF_INET, netmask, &lease->subnet_mask); | |
1075 | if (r <= 0) | |
e26ea7fc | 1076 | log_debug("Failed to parse netmask %s, ignoring.", netmask); |
0339cd77 LP |
1077 | else |
1078 | lease->have_subnet_mask = true; | |
1079 | } | |
fe8db0c5 | 1080 | |
0ad853bc | 1081 | if (server_address) { |
0339cd77 LP |
1082 | r = inet_pton(AF_INET, server_address, &lease->server_address); |
1083 | if (r <= 0) | |
e26ea7fc | 1084 | log_debug("Failed to parse server address %s, ignoring.", server_address); |
0ad853bc TG |
1085 | } |
1086 | ||
8e34a618 | 1087 | if (next_server) { |
0339cd77 LP |
1088 | r = inet_pton(AF_INET, next_server, &lease->next_server); |
1089 | if (r <= 0) | |
e26ea7fc | 1090 | log_debug("Failed to parse next server %s, ignoring.", next_server); |
0339cd77 | 1091 | } |
8e34a618 | 1092 | |
0339cd77 LP |
1093 | if (broadcast) { |
1094 | r = inet_pton(AF_INET, broadcast, &lease->broadcast); | |
1095 | if (r <= 0) | |
e26ea7fc | 1096 | log_debug("Failed to parse broadcast address %s, ignoring.", broadcast); |
0339cd77 LP |
1097 | else |
1098 | lease->have_broadcast = true; | |
8e34a618 TG |
1099 | } |
1100 | ||
109731eb | 1101 | if (dns) { |
a2ba62c7 | 1102 | r = deserialize_in_addrs(&lease->dns, dns); |
109731eb | 1103 | if (r < 0) |
0339cd77 LP |
1104 | log_debug_errno(r, "Failed to deserialize DNS servers %s, ignoring: %m", dns); |
1105 | else | |
1106 | lease->dns_size = r; | |
109731eb TG |
1107 | } |
1108 | ||
1109 | if (ntp) { | |
a2ba62c7 | 1110 | r = deserialize_in_addrs(&lease->ntp, ntp); |
109731eb | 1111 | if (r < 0) |
0339cd77 LP |
1112 | log_debug_errno(r, "Failed to deserialize NTP servers %s, ignoring: %m", ntp); |
1113 | else | |
1114 | lease->ntp_size = r; | |
109731eb TG |
1115 | } |
1116 | ||
fe8db0c5 | 1117 | if (mtu) { |
0339cd77 LP |
1118 | r = safe_atou16(mtu, &lease->mtu); |
1119 | if (r < 0) | |
1120 | log_debug_errno(r, "Failed to parse MTU %s, ignoring: %m", mtu); | |
fe8db0c5 TG |
1121 | } |
1122 | ||
b85bc551 DW |
1123 | if (domains) { |
1124 | _cleanup_strv_free_ char **a = NULL; | |
1125 | a = strv_split(domains, " "); | |
1126 | if (!a) | |
1127 | return -ENOMEM; | |
1128 | ||
1129 | if (!strv_isempty(a)) { | |
1130 | lease->search_domains = a; | |
1131 | a = NULL; | |
1132 | } | |
1133 | } | |
1134 | ||
e1ea665e | 1135 | if (routes) { |
0339cd77 LP |
1136 | r = deserialize_dhcp_routes( |
1137 | &lease->static_route, | |
1138 | &lease->static_route_size, | |
1139 | &lease->static_route_allocated, | |
1140 | routes); | |
1141 | if (r < 0) | |
1142 | log_debug_errno(r, "Failed to parse DHCP routes %s, ignoring: %m", routes); | |
1143 | } | |
1144 | ||
1145 | if (lifetime) { | |
1146 | r = safe_atou32(lifetime, &lease->lifetime); | |
1147 | if (r < 0) | |
1148 | log_debug_errno(r, "Failed to parse lifetime %s, ignoring: %m", lifetime); | |
1149 | } | |
1150 | ||
1151 | if (t1) { | |
1152 | r = safe_atou32(t1, &lease->t1); | |
1153 | if (r < 0) | |
1154 | log_debug_errno(r, "Failed to parse T1 %s, ignoring: %m", t1); | |
1155 | } | |
1156 | ||
1157 | if (t2) { | |
1158 | r = safe_atou32(t2, &lease->t2); | |
e1ea665e | 1159 | if (r < 0) |
0339cd77 | 1160 | log_debug_errno(r, "Failed to parse T2 %s, ignoring: %m", t2); |
e1ea665e EY |
1161 | } |
1162 | ||
e37f74a6 | 1163 | if (client_id_hex) { |
ce088d6f | 1164 | r = unhexmem(client_id_hex, (size_t) -1, &lease->client_id, &lease->client_id_len); |
30494563 | 1165 | if (r < 0) |
0339cd77 | 1166 | log_debug_errno(r, "Failed to parse client ID %s, ignoring: %m", client_id_hex); |
e37f74a6 DW |
1167 | } |
1168 | ||
e43a8393 | 1169 | if (vendor_specific_hex) { |
ce088d6f | 1170 | r = unhexmem(vendor_specific_hex, (size_t) -1, &lease->vendor_specific, &lease->vendor_specific_len); |
e43a8393 | 1171 | if (r < 0) |
0339cd77 | 1172 | log_debug_errno(r, "Failed to parse vendor specific data %s, ignoring: %m", vendor_specific_hex); |
e43a8393 BG |
1173 | } |
1174 | ||
22805d92 | 1175 | for (i = 0; i <= SD_DHCP_OPTION_PRIVATE_LAST - SD_DHCP_OPTION_PRIVATE_BASE; i++) { |
e4735228 | 1176 | _cleanup_free_ void *data = NULL; |
a073309f AC |
1177 | size_t len; |
1178 | ||
1179 | if (!options[i]) | |
1180 | continue; | |
1181 | ||
ce088d6f | 1182 | r = unhexmem(options[i], (size_t) -1, &data, &len); |
0339cd77 LP |
1183 | if (r < 0) { |
1184 | log_debug_errno(r, "Failed to parse private DHCP option %s, ignoring: %m", options[i]); | |
1185 | continue; | |
1186 | } | |
a073309f | 1187 | |
22805d92 | 1188 | r = dhcp_lease_insert_private_option(lease, SD_DHCP_OPTION_PRIVATE_BASE + i, data, len); |
626be147 | 1189 | if (r < 0) |
a073309f AC |
1190 | return r; |
1191 | } | |
1192 | ||
1cc6c93a | 1193 | *ret = TAKE_PTR(lease); |
fe8db0c5 TG |
1194 | |
1195 | return 0; | |
1196 | } | |
9e64dd72 TG |
1197 | |
1198 | int dhcp_lease_set_default_subnet_mask(sd_dhcp_lease *lease) { | |
0339cd77 | 1199 | struct in_addr address, mask; |
df40eee8 | 1200 | int r; |
9e64dd72 TG |
1201 | |
1202 | assert(lease); | |
9e64dd72 | 1203 | |
0339cd77 LP |
1204 | if (lease->address == 0) |
1205 | return -ENODATA; | |
1206 | ||
df40eee8 | 1207 | address.s_addr = lease->address; |
9e64dd72 TG |
1208 | |
1209 | /* fall back to the default subnet masks based on address class */ | |
5a941f5f | 1210 | r = in4_addr_default_subnet_mask(&address, &mask); |
df40eee8 TG |
1211 | if (r < 0) |
1212 | return r; | |
9e64dd72 | 1213 | |
df40eee8 | 1214 | lease->subnet_mask = mask.s_addr; |
0339cd77 | 1215 | lease->have_subnet_mask = true; |
9e64dd72 TG |
1216 | |
1217 | return 0; | |
1218 | } | |
e37f74a6 | 1219 | |
0339cd77 | 1220 | int sd_dhcp_lease_get_client_id(sd_dhcp_lease *lease, const void **client_id, size_t *client_id_len) { |
e37f74a6 DW |
1221 | assert_return(lease, -EINVAL); |
1222 | assert_return(client_id, -EINVAL); | |
1223 | assert_return(client_id_len, -EINVAL); | |
1224 | ||
0339cd77 LP |
1225 | if (!lease->client_id) |
1226 | return -ENODATA; | |
1227 | ||
e37f74a6 DW |
1228 | *client_id = lease->client_id; |
1229 | *client_id_len = lease->client_id_len; | |
0339cd77 | 1230 | |
e37f74a6 DW |
1231 | return 0; |
1232 | } | |
1233 | ||
0339cd77 | 1234 | int dhcp_lease_set_client_id(sd_dhcp_lease *lease, const void *client_id, size_t client_id_len) { |
e37f74a6 | 1235 | assert_return(lease, -EINVAL); |
0339cd77 LP |
1236 | assert_return(client_id || client_id_len <= 0, -EINVAL); |
1237 | ||
1238 | if (client_id_len <= 0) | |
1239 | lease->client_id = mfree(lease->client_id); | |
1240 | else { | |
1241 | void *p; | |
e37f74a6 | 1242 | |
0339cd77 LP |
1243 | p = memdup(client_id, client_id_len); |
1244 | if (!p) | |
1245 | return -ENOMEM; | |
e37f74a6 | 1246 | |
0339cd77 LP |
1247 | free(lease->client_id); |
1248 | lease->client_id = p; | |
e37f74a6 DW |
1249 | lease->client_id_len = client_id_len; |
1250 | } | |
1251 | ||
1252 | return 0; | |
1253 | } | |
8eb9058d | 1254 | |
64d6c229 | 1255 | int sd_dhcp_lease_get_timezone(sd_dhcp_lease *lease, const char **tz) { |
8eb9058d | 1256 | assert_return(lease, -EINVAL); |
64d6c229 | 1257 | assert_return(tz, -EINVAL); |
8eb9058d LP |
1258 | |
1259 | if (!lease->timezone) | |
0339cd77 | 1260 | return -ENODATA; |
8eb9058d | 1261 | |
64d6c229 | 1262 | *tz = lease->timezone; |
8eb9058d LP |
1263 | return 0; |
1264 | } | |
f8693fc7 BG |
1265 | |
1266 | int sd_dhcp_route_get_destination(sd_dhcp_route *route, struct in_addr *destination) { | |
1267 | assert_return(route, -EINVAL); | |
1268 | assert_return(destination, -EINVAL); | |
1269 | ||
1270 | *destination = route->dst_addr; | |
1271 | return 0; | |
1272 | } | |
1273 | ||
1274 | int sd_dhcp_route_get_destination_prefix_length(sd_dhcp_route *route, uint8_t *length) { | |
1275 | assert_return(route, -EINVAL); | |
1276 | assert_return(length, -EINVAL); | |
1277 | ||
1278 | *length = route->dst_prefixlen; | |
1279 | return 0; | |
1280 | } | |
1281 | ||
1282 | int sd_dhcp_route_get_gateway(sd_dhcp_route *route, struct in_addr *gateway) { | |
1283 | assert_return(route, -EINVAL); | |
1284 | assert_return(gateway, -EINVAL); | |
1285 | ||
1286 | *gateway = route->gw_addr; | |
1287 | return 0; | |
1288 | } | |
cf6f5bb5 TH |
1289 | |
1290 | int sd_dhcp_route_get_option(sd_dhcp_route *route) { | |
1291 | assert_return(route, -EINVAL); | |
1292 | ||
1293 | return route->option; | |
1294 | } |