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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" | |
3ffd4af2 | 19 | #include "fd-util.h" |
fe8db0c5 | 20 | #include "fileio.h" |
b11d6a7b | 21 | #include "hexdecoct.h" |
958b66ea | 22 | #include "hostname-util.h" |
07630cea | 23 | #include "in-addr-util.h" |
0339cd77 | 24 | #include "network-internal.h" |
6bedfcbb | 25 | #include "parse-util.h" |
d054f0a4 | 26 | #include "stdio-util.h" |
b11d6a7b | 27 | #include "string-util.h" |
51517f9e | 28 | #include "strv.h" |
07630cea | 29 | #include "unaligned.h" |
a6cc569e TG |
30 | |
31 | int sd_dhcp_lease_get_address(sd_dhcp_lease *lease, struct in_addr *addr) { | |
32 | assert_return(lease, -EINVAL); | |
33 | assert_return(addr, -EINVAL); | |
34 | ||
0339cd77 LP |
35 | if (lease->address == 0) |
36 | return -ENODATA; | |
37 | ||
a6cc569e | 38 | addr->s_addr = lease->address; |
0339cd77 LP |
39 | return 0; |
40 | } | |
a6cc569e | 41 | |
0339cd77 LP |
42 | int sd_dhcp_lease_get_broadcast(sd_dhcp_lease *lease, struct in_addr *addr) { |
43 | assert_return(lease, -EINVAL); | |
44 | assert_return(addr, -EINVAL); | |
45 | ||
46 | if (!lease->have_broadcast) | |
47 | return -ENODATA; | |
48 | ||
49 | addr->s_addr = lease->broadcast; | |
a6cc569e TG |
50 | return 0; |
51 | } | |
52 | ||
68ceb9df PF |
53 | int sd_dhcp_lease_get_lifetime(sd_dhcp_lease *lease, uint32_t *lifetime) { |
54 | assert_return(lease, -EINVAL); | |
1c6eb4e3 | 55 | assert_return(lifetime, -EINVAL); |
68ceb9df | 56 | |
0339cd77 LP |
57 | if (lease->lifetime <= 0) |
58 | return -ENODATA; | |
59 | ||
68ceb9df | 60 | *lifetime = lease->lifetime; |
0339cd77 LP |
61 | return 0; |
62 | } | |
68ceb9df | 63 | |
0339cd77 LP |
64 | int sd_dhcp_lease_get_t1(sd_dhcp_lease *lease, uint32_t *t1) { |
65 | assert_return(lease, -EINVAL); | |
66 | assert_return(t1, -EINVAL); | |
67 | ||
68 | if (lease->t1 <= 0) | |
69 | return -ENODATA; | |
70 | ||
71 | *t1 = lease->t1; | |
72 | return 0; | |
73 | } | |
74 | ||
75 | int sd_dhcp_lease_get_t2(sd_dhcp_lease *lease, uint32_t *t2) { | |
76 | assert_return(lease, -EINVAL); | |
77 | assert_return(t2, -EINVAL); | |
78 | ||
79 | if (lease->t2 <= 0) | |
80 | return -ENODATA; | |
81 | ||
82 | *t2 = lease->t2; | |
68ceb9df PF |
83 | return 0; |
84 | } | |
85 | ||
a6cc569e TG |
86 | int sd_dhcp_lease_get_mtu(sd_dhcp_lease *lease, uint16_t *mtu) { |
87 | assert_return(lease, -EINVAL); | |
88 | assert_return(mtu, -EINVAL); | |
89 | ||
0339cd77 LP |
90 | if (lease->mtu <= 0) |
91 | return -ENODATA; | |
a6cc569e | 92 | |
0339cd77 | 93 | *mtu = lease->mtu; |
a6cc569e TG |
94 | return 0; |
95 | } | |
96 | ||
a2ba62c7 | 97 | int sd_dhcp_lease_get_dns(sd_dhcp_lease *lease, const struct in_addr **addr) { |
a6cc569e TG |
98 | assert_return(lease, -EINVAL); |
99 | assert_return(addr, -EINVAL); | |
a6cc569e | 100 | |
0339cd77 LP |
101 | if (lease->dns_size <= 0) |
102 | return -ENODATA; | |
a6cc569e | 103 | |
0339cd77 LP |
104 | *addr = lease->dns; |
105 | return (int) lease->dns_size; | |
a6cc569e TG |
106 | } |
107 | ||
a2ba62c7 | 108 | int sd_dhcp_lease_get_ntp(sd_dhcp_lease *lease, const struct in_addr **addr) { |
46844696 TG |
109 | assert_return(lease, -EINVAL); |
110 | assert_return(addr, -EINVAL); | |
46844696 | 111 | |
0339cd77 LP |
112 | if (lease->ntp_size <= 0) |
113 | return -ENODATA; | |
46844696 | 114 | |
0339cd77 LP |
115 | *addr = lease->ntp; |
116 | return (int) lease->ntp_size; | |
46844696 TG |
117 | } |
118 | ||
a6cc569e TG |
119 | int sd_dhcp_lease_get_domainname(sd_dhcp_lease *lease, const char **domainname) { |
120 | assert_return(lease, -EINVAL); | |
121 | assert_return(domainname, -EINVAL); | |
122 | ||
0339cd77 LP |
123 | if (!lease->domainname) |
124 | return -ENODATA; | |
a6cc569e | 125 | |
0339cd77 | 126 | *domainname = lease->domainname; |
a6cc569e TG |
127 | return 0; |
128 | } | |
129 | ||
130 | int sd_dhcp_lease_get_hostname(sd_dhcp_lease *lease, const char **hostname) { | |
131 | assert_return(lease, -EINVAL); | |
132 | assert_return(hostname, -EINVAL); | |
133 | ||
0339cd77 LP |
134 | if (!lease->hostname) |
135 | return -ENODATA; | |
a6cc569e | 136 | |
0339cd77 | 137 | *hostname = lease->hostname; |
a6cc569e TG |
138 | return 0; |
139 | } | |
140 | ||
ce78df79 TG |
141 | int sd_dhcp_lease_get_root_path(sd_dhcp_lease *lease, const char **root_path) { |
142 | assert_return(lease, -EINVAL); | |
143 | assert_return(root_path, -EINVAL); | |
144 | ||
0339cd77 LP |
145 | if (!lease->root_path) |
146 | return -ENODATA; | |
ce78df79 | 147 | |
0339cd77 | 148 | *root_path = lease->root_path; |
ce78df79 TG |
149 | return 0; |
150 | } | |
151 | ||
a6cc569e TG |
152 | int sd_dhcp_lease_get_router(sd_dhcp_lease *lease, struct in_addr *addr) { |
153 | assert_return(lease, -EINVAL); | |
154 | assert_return(addr, -EINVAL); | |
155 | ||
0339cd77 LP |
156 | if (lease->router == 0) |
157 | return -ENODATA; | |
a6cc569e | 158 | |
0339cd77 | 159 | addr->s_addr = lease->router; |
a6cc569e TG |
160 | return 0; |
161 | } | |
162 | ||
163 | int sd_dhcp_lease_get_netmask(sd_dhcp_lease *lease, struct in_addr *addr) { | |
164 | assert_return(lease, -EINVAL); | |
165 | assert_return(addr, -EINVAL); | |
166 | ||
0339cd77 LP |
167 | if (!lease->have_subnet_mask) |
168 | return -ENODATA; | |
a6cc569e | 169 | |
0339cd77 | 170 | addr->s_addr = lease->subnet_mask; |
a6cc569e TG |
171 | return 0; |
172 | } | |
173 | ||
0ad853bc TG |
174 | int sd_dhcp_lease_get_server_identifier(sd_dhcp_lease *lease, struct in_addr *addr) { |
175 | assert_return(lease, -EINVAL); | |
176 | assert_return(addr, -EINVAL); | |
177 | ||
0339cd77 LP |
178 | if (lease->server_address == 0) |
179 | return -ENODATA; | |
0ad853bc | 180 | |
0339cd77 | 181 | addr->s_addr = lease->server_address; |
0ad853bc TG |
182 | return 0; |
183 | } | |
184 | ||
8e34a618 TG |
185 | int sd_dhcp_lease_get_next_server(sd_dhcp_lease *lease, struct in_addr *addr) { |
186 | assert_return(lease, -EINVAL); | |
187 | assert_return(addr, -EINVAL); | |
188 | ||
0339cd77 LP |
189 | if (lease->next_server == 0) |
190 | return -ENODATA; | |
8e34a618 | 191 | |
0339cd77 | 192 | addr->s_addr = lease->next_server; |
8e34a618 TG |
193 | return 0; |
194 | } | |
195 | ||
f8693fc7 BG |
196 | /* |
197 | * The returned routes array must be freed by the caller. | |
198 | * Route objects have the same lifetime of the lease and must not be freed. | |
199 | */ | |
200 | int sd_dhcp_lease_get_routes(sd_dhcp_lease *lease, sd_dhcp_route ***routes) { | |
201 | sd_dhcp_route **ret; | |
202 | unsigned i; | |
203 | ||
e1ea665e EY |
204 | assert_return(lease, -EINVAL); |
205 | assert_return(routes, -EINVAL); | |
e1ea665e | 206 | |
0339cd77 LP |
207 | if (lease->static_route_size <= 0) |
208 | return -ENODATA; | |
e1ea665e | 209 | |
f8693fc7 BG |
210 | ret = new(sd_dhcp_route *, lease->static_route_size); |
211 | if (!ret) | |
212 | return -ENOMEM; | |
213 | ||
214 | for (i = 0; i < lease->static_route_size; i++) | |
215 | ret[i] = &lease->static_route[i]; | |
216 | ||
217 | *routes = ret; | |
0339cd77 | 218 | return (int) lease->static_route_size; |
e1ea665e EY |
219 | } |
220 | ||
b85bc551 | 221 | int sd_dhcp_lease_get_search_domains(sd_dhcp_lease *lease, char ***domains) { |
da6053d0 | 222 | size_t r; |
b85bc551 DW |
223 | |
224 | assert_return(lease, -EINVAL); | |
225 | assert_return(domains, -EINVAL); | |
226 | ||
227 | r = strv_length(lease->search_domains); | |
228 | if (r > 0) { | |
229 | *domains = lease->search_domains; | |
230 | return (int) r; | |
231 | } | |
232 | ||
233 | return -ENODATA; | |
234 | } | |
235 | ||
0339cd77 | 236 | int sd_dhcp_lease_get_vendor_specific(sd_dhcp_lease *lease, const void **data, size_t *data_len) { |
e43a8393 BG |
237 | assert_return(lease, -EINVAL); |
238 | assert_return(data, -EINVAL); | |
239 | assert_return(data_len, -EINVAL); | |
240 | ||
0339cd77 LP |
241 | if (lease->vendor_specific_len <= 0) |
242 | return -ENODATA; | |
e43a8393 BG |
243 | |
244 | *data = lease->vendor_specific; | |
245 | *data_len = lease->vendor_specific_len; | |
e43a8393 BG |
246 | return 0; |
247 | } | |
248 | ||
8301aa0b YW |
249 | static sd_dhcp_lease *dhcp_lease_free(sd_dhcp_lease *lease) { |
250 | assert(lease); | |
3733eec3 LP |
251 | |
252 | while (lease->private_options) { | |
253 | struct sd_dhcp_raw_option *option = lease->private_options; | |
254 | ||
255 | LIST_REMOVE(options, lease->private_options, option); | |
256 | ||
257 | free(option->data); | |
258 | free(option); | |
a6cc569e TG |
259 | } |
260 | ||
e2975f85 YW |
261 | free(lease->root_path); |
262 | free(lease->timezone); | |
3733eec3 LP |
263 | free(lease->hostname); |
264 | free(lease->domainname); | |
265 | free(lease->dns); | |
266 | free(lease->ntp); | |
267 | free(lease->static_route); | |
268 | free(lease->client_id); | |
269 | free(lease->vendor_specific); | |
b85bc551 | 270 | strv_free(lease->search_domains); |
6b430fdb | 271 | return mfree(lease); |
a6cc569e TG |
272 | } |
273 | ||
8301aa0b YW |
274 | DEFINE_TRIVIAL_REF_UNREF_FUNC(sd_dhcp_lease, sd_dhcp_lease, dhcp_lease_free); |
275 | ||
0339cd77 | 276 | static int lease_parse_u32(const uint8_t *option, size_t len, uint32_t *ret, uint32_t min) { |
e140ae58 TG |
277 | assert(option); |
278 | assert(ret); | |
279 | ||
0339cd77 LP |
280 | if (len != 4) |
281 | return -EINVAL; | |
e140ae58 | 282 | |
0339cd77 LP |
283 | *ret = unaligned_read_be32((be32_t*) option); |
284 | if (*ret < min) | |
285 | *ret = min; | |
e140ae58 | 286 | |
0339cd77 | 287 | return 0; |
e140ae58 TG |
288 | } |
289 | ||
0339cd77 | 290 | static int lease_parse_u16(const uint8_t *option, size_t len, uint16_t *ret, uint16_t min) { |
e140ae58 TG |
291 | assert(option); |
292 | assert(ret); | |
293 | ||
0339cd77 LP |
294 | if (len != 2) |
295 | return -EINVAL; | |
e140ae58 | 296 | |
0339cd77 LP |
297 | *ret = unaligned_read_be16((be16_t*) option); |
298 | if (*ret < min) | |
299 | *ret = min; | |
f5c0c00f | 300 | |
0339cd77 | 301 | return 0; |
f5c0c00f TG |
302 | } |
303 | ||
0339cd77 | 304 | static int lease_parse_be32(const uint8_t *option, size_t len, be32_t *ret) { |
f5c0c00f TG |
305 | assert(option); |
306 | assert(ret); | |
307 | ||
0339cd77 LP |
308 | if (len != 4) |
309 | return -EINVAL; | |
f5c0c00f | 310 | |
0339cd77 LP |
311 | memcpy(ret, option, 4); |
312 | return 0; | |
f5c0c00f TG |
313 | } |
314 | ||
e140ae58 TG |
315 | static int lease_parse_string(const uint8_t *option, size_t len, char **ret) { |
316 | assert(option); | |
317 | assert(ret); | |
318 | ||
0339cd77 LP |
319 | if (len <= 0) |
320 | *ret = mfree(*ret); | |
321 | else { | |
e140ae58 TG |
322 | char *string; |
323 | ||
e989fd9b LP |
324 | /* |
325 | * One trailing NUL byte is OK, we don't mind. See: | |
326 | * https://github.com/systemd/systemd/issues/1337 | |
327 | */ | |
328 | if (memchr(option, 0, len - 1)) | |
43f447b1 LP |
329 | return -EINVAL; |
330 | ||
e989fd9b | 331 | string = strndup((const char *) option, len); |
e140ae58 | 332 | if (!string) |
43f447b1 | 333 | return -ENOMEM; |
e140ae58 | 334 | |
09348d40 | 335 | free_and_replace(*ret, string); |
0339cd77 | 336 | } |
e140ae58 TG |
337 | |
338 | return 0; | |
339 | } | |
340 | ||
978c6477 LP |
341 | static int lease_parse_domain(const uint8_t *option, size_t len, char **ret) { |
342 | _cleanup_free_ char *name = NULL, *normalized = NULL; | |
343 | int r; | |
344 | ||
345 | assert(option); | |
346 | assert(ret); | |
347 | ||
348 | r = lease_parse_string(option, len, &name); | |
349 | if (r < 0) | |
350 | return r; | |
351 | if (!name) { | |
352 | *ret = mfree(*ret); | |
353 | return 0; | |
354 | } | |
355 | ||
356 | r = dns_name_normalize(name, &normalized); | |
357 | if (r < 0) | |
358 | return r; | |
359 | ||
360 | if (is_localhost(normalized)) | |
361 | return -EINVAL; | |
362 | ||
363 | if (dns_name_is_root(normalized)) | |
364 | return -EINVAL; | |
365 | ||
f9ecfd3b | 366 | free_and_replace(*ret, normalized); |
978c6477 LP |
367 | |
368 | return 0; | |
369 | } | |
370 | ||
d9ec2e63 LP |
371 | static void filter_bogus_addresses(struct in_addr *addresses, size_t *n) { |
372 | size_t i, j; | |
373 | ||
374 | /* Silently filter DNS/NTP servers supplied to us that do not make outside of the local scope. */ | |
375 | ||
376 | for (i = 0, j = 0; i < *n; i ++) { | |
377 | ||
378 | if (in4_addr_is_null(addresses+i) || | |
379 | in4_addr_is_localhost(addresses+i)) | |
380 | continue; | |
381 | ||
382 | addresses[j++] = addresses[i]; | |
383 | } | |
384 | ||
385 | *n = j; | |
386 | } | |
387 | ||
0339cd77 | 388 | static int lease_parse_in_addrs(const uint8_t *option, size_t len, struct in_addr **ret, size_t *n_ret) { |
e140ae58 TG |
389 | assert(option); |
390 | assert(ret); | |
0339cd77 | 391 | assert(n_ret); |
e140ae58 | 392 | |
0339cd77 LP |
393 | if (len <= 0) { |
394 | *ret = mfree(*ret); | |
395 | *n_ret = 0; | |
396 | } else { | |
397 | size_t n_addresses; | |
e140ae58 TG |
398 | struct in_addr *addresses; |
399 | ||
0339cd77 LP |
400 | if (len % 4 != 0) |
401 | return -EINVAL; | |
e140ae58 | 402 | |
0339cd77 LP |
403 | n_addresses = len / 4; |
404 | ||
405 | addresses = newdup(struct in_addr, option, n_addresses); | |
e140ae58 TG |
406 | if (!addresses) |
407 | return -ENOMEM; | |
408 | ||
d9ec2e63 LP |
409 | filter_bogus_addresses(addresses, &n_addresses); |
410 | ||
e140ae58 TG |
411 | free(*ret); |
412 | *ret = addresses; | |
0339cd77 | 413 | *n_ret = n_addresses; |
e140ae58 TG |
414 | } |
415 | ||
416 | return 0; | |
417 | } | |
418 | ||
0339cd77 LP |
419 | static int lease_parse_routes( |
420 | const uint8_t *option, size_t len, | |
421 | struct sd_dhcp_route **routes, size_t *routes_size, size_t *routes_allocated) { | |
e1ea665e EY |
422 | |
423 | struct in_addr addr; | |
424 | ||
0339cd77 | 425 | assert(option || len <= 0); |
e1ea665e EY |
426 | assert(routes); |
427 | assert(routes_size); | |
428 | assert(routes_allocated); | |
429 | ||
0339cd77 | 430 | if (len <= 0) |
e1ea665e EY |
431 | return 0; |
432 | ||
433 | if (len % 8 != 0) | |
434 | return -EINVAL; | |
435 | ||
436 | if (!GREEDY_REALLOC(*routes, *routes_allocated, *routes_size + (len / 8))) | |
437 | return -ENOMEM; | |
438 | ||
439 | while (len >= 8) { | |
440 | struct sd_dhcp_route *route = *routes + *routes_size; | |
1caa12d0 | 441 | int r; |
e1ea665e | 442 | |
8cdc46e7 | 443 | route->option = SD_DHCP_OPTION_STATIC_ROUTE; |
5a941f5f | 444 | r = in4_addr_default_prefixlen((struct in_addr*) option, &route->dst_prefixlen); |
1caa12d0 | 445 | if (r < 0) { |
0339cd77 | 446 | log_debug("Failed to determine destination prefix length from class based IP, ignoring"); |
e1ea665e EY |
447 | continue; |
448 | } | |
449 | ||
0339cd77 | 450 | assert_se(lease_parse_be32(option, 4, &addr.s_addr) >= 0); |
e1ea665e EY |
451 | route->dst_addr = inet_makeaddr(inet_netof(addr), 0); |
452 | option += 4; | |
453 | ||
0339cd77 | 454 | assert_se(lease_parse_be32(option, 4, &route->gw_addr.s_addr) >= 0); |
e1ea665e EY |
455 | option += 4; |
456 | ||
457 | len -= 8; | |
458 | (*routes_size)++; | |
459 | } | |
460 | ||
461 | return 0; | |
462 | } | |
463 | ||
464 | /* parses RFC3442 Classless Static Route Option */ | |
0339cd77 LP |
465 | static int lease_parse_classless_routes( |
466 | const uint8_t *option, size_t len, | |
467 | struct sd_dhcp_route **routes, size_t *routes_size, size_t *routes_allocated) { | |
e1ea665e | 468 | |
0339cd77 | 469 | assert(option || len <= 0); |
e1ea665e EY |
470 | assert(routes); |
471 | assert(routes_size); | |
472 | assert(routes_allocated); | |
473 | ||
0339cd77 LP |
474 | if (len <= 0) |
475 | return 0; | |
476 | ||
e1ea665e EY |
477 | /* option format: (subnet-mask-width significant-subnet-octets gateway-ip)* */ |
478 | ||
479 | while (len > 0) { | |
480 | uint8_t dst_octets; | |
481 | struct sd_dhcp_route *route; | |
482 | ||
483 | if (!GREEDY_REALLOC(*routes, *routes_allocated, *routes_size + 1)) | |
0339cd77 | 484 | return -ENOMEM; |
e1ea665e EY |
485 | |
486 | route = *routes + *routes_size; | |
8cdc46e7 | 487 | route->option = SD_DHCP_OPTION_CLASSLESS_STATIC_ROUTE; |
e1ea665e EY |
488 | |
489 | dst_octets = (*option == 0 ? 0 : ((*option - 1) / 8) + 1); | |
490 | route->dst_prefixlen = *option; | |
491 | option++; | |
492 | len--; | |
493 | ||
494 | /* can't have more than 4 octets in IPv4 */ | |
495 | if (dst_octets > 4 || len < dst_octets) | |
496 | return -EINVAL; | |
497 | ||
498 | route->dst_addr.s_addr = 0; | |
499 | memcpy(&route->dst_addr.s_addr, option, dst_octets); | |
500 | option += dst_octets; | |
501 | len -= dst_octets; | |
502 | ||
503 | if (len < 4) | |
504 | return -EINVAL; | |
505 | ||
b14fff6e | 506 | assert_se(lease_parse_be32(option, 4, &route->gw_addr.s_addr) >= 0); |
e1ea665e EY |
507 | option += 4; |
508 | len -= 4; | |
509 | ||
510 | (*routes_size)++; | |
511 | } | |
512 | ||
513 | return 0; | |
514 | } | |
515 | ||
e4735228 | 516 | int dhcp_lease_parse_options(uint8_t code, uint8_t len, const void *option, void *userdata) { |
2d03c0b8 | 517 | sd_dhcp_lease *lease = userdata; |
e140ae58 TG |
518 | int r; |
519 | ||
520 | assert(lease); | |
a6cc569e TG |
521 | |
522 | switch(code) { | |
523 | ||
22805d92 | 524 | case SD_DHCP_OPTION_IP_ADDRESS_LEASE_TIME: |
0339cd77 LP |
525 | r = lease_parse_u32(option, len, &lease->lifetime, 1); |
526 | if (r < 0) | |
527 | log_debug_errno(r, "Failed to parse lease time, ignoring: %m"); | |
528 | ||
a6cc569e TG |
529 | break; |
530 | ||
22805d92 | 531 | case SD_DHCP_OPTION_SERVER_IDENTIFIER: |
0339cd77 LP |
532 | r = lease_parse_be32(option, len, &lease->server_address); |
533 | if (r < 0) | |
534 | log_debug_errno(r, "Failed to parse server identifier, ignoring: %m"); | |
535 | ||
a6cc569e TG |
536 | break; |
537 | ||
22805d92 | 538 | case SD_DHCP_OPTION_SUBNET_MASK: |
0339cd77 LP |
539 | r = lease_parse_be32(option, len, &lease->subnet_mask); |
540 | if (r < 0) | |
541 | log_debug_errno(r, "Failed to parse subnet mask, ignoring: %m"); | |
542 | else | |
543 | lease->have_subnet_mask = true; | |
a6cc569e TG |
544 | break; |
545 | ||
22805d92 | 546 | case SD_DHCP_OPTION_BROADCAST: |
0339cd77 LP |
547 | r = lease_parse_be32(option, len, &lease->broadcast); |
548 | if (r < 0) | |
549 | log_debug_errno(r, "Failed to parse broadcast address, ignoring: %m"); | |
550 | else | |
551 | lease->have_broadcast = true; | |
f5c0c00f TG |
552 | break; |
553 | ||
22805d92 | 554 | case SD_DHCP_OPTION_ROUTER: |
0339cd77 LP |
555 | if (len >= 4) { |
556 | r = lease_parse_be32(option, 4, &lease->router); | |
557 | if (r < 0) | |
558 | log_debug_errno(r, "Failed to parse router address, ignoring: %m"); | |
559 | } | |
a6cc569e TG |
560 | break; |
561 | ||
22805d92 | 562 | case SD_DHCP_OPTION_DOMAIN_NAME_SERVER: |
0339cd77 LP |
563 | r = lease_parse_in_addrs(option, len, &lease->dns, &lease->dns_size); |
564 | if (r < 0) | |
565 | log_debug_errno(r, "Failed to parse DNS server, ignoring: %m"); | |
a6cc569e TG |
566 | break; |
567 | ||
22805d92 | 568 | case SD_DHCP_OPTION_NTP_SERVER: |
0339cd77 LP |
569 | r = lease_parse_in_addrs(option, len, &lease->ntp, &lease->ntp_size); |
570 | if (r < 0) | |
571 | log_debug_errno(r, "Failed to parse NTP server, ignoring: %m"); | |
f5c0c00f TG |
572 | break; |
573 | ||
22805d92 | 574 | case SD_DHCP_OPTION_STATIC_ROUTE: |
0339cd77 LP |
575 | r = lease_parse_routes(option, len, &lease->static_route, &lease->static_route_size, &lease->static_route_allocated); |
576 | if (r < 0) | |
577 | log_debug_errno(r, "Failed to parse static routes, ignoring: %m"); | |
f5c0c00f TG |
578 | break; |
579 | ||
22805d92 | 580 | case SD_DHCP_OPTION_INTERFACE_MTU: |
0339cd77 LP |
581 | r = lease_parse_u16(option, len, &lease->mtu, 68); |
582 | if (r < 0) | |
583 | log_debug_errno(r, "Failed to parse MTU, ignoring: %m"); | |
955d99ed | 584 | if (lease->mtu < DHCP_DEFAULT_MIN_SIZE) { |
4dd53da9 | 585 | log_debug("MTU value of %" PRIu16 " too small. Using default MTU value of %d instead.", lease->mtu, DHCP_DEFAULT_MIN_SIZE); |
955d99ed MG |
586 | lease->mtu = DHCP_DEFAULT_MIN_SIZE; |
587 | } | |
588 | ||
f5c0c00f TG |
589 | break; |
590 | ||
978c6477 LP |
591 | case SD_DHCP_OPTION_DOMAIN_NAME: |
592 | r = lease_parse_domain(option, len, &lease->domainname); | |
0339cd77 LP |
593 | if (r < 0) { |
594 | log_debug_errno(r, "Failed to parse domain name, ignoring: %m"); | |
595 | return 0; | |
596 | } | |
a6cc569e | 597 | |
784d9b9c | 598 | break; |
784d9b9c | 599 | |
b85bc551 DW |
600 | case SD_DHCP_OPTION_DOMAIN_SEARCH_LIST: |
601 | r = dhcp_lease_parse_search_domains(option, len, &lease->search_domains); | |
602 | if (r < 0) | |
603 | log_debug_errno(r, "Failed to parse Domain Search List, ignoring: %m"); | |
604 | break; | |
605 | ||
978c6477 LP |
606 | case SD_DHCP_OPTION_HOST_NAME: |
607 | r = lease_parse_domain(option, len, &lease->hostname); | |
0339cd77 LP |
608 | if (r < 0) { |
609 | log_debug_errno(r, "Failed to parse host name, ignoring: %m"); | |
610 | return 0; | |
611 | } | |
a6cc569e | 612 | |
784d9b9c | 613 | break; |
ce78df79 | 614 | |
22805d92 | 615 | case SD_DHCP_OPTION_ROOT_PATH: |
0339cd77 LP |
616 | r = lease_parse_string(option, len, &lease->root_path); |
617 | if (r < 0) | |
618 | log_debug_errno(r, "Failed to parse root path, ignoring: %m"); | |
619 | break; | |
ce78df79 | 620 | |
22805d92 | 621 | case SD_DHCP_OPTION_RENEWAL_T1_TIME: |
0339cd77 LP |
622 | r = lease_parse_u32(option, len, &lease->t1, 1); |
623 | if (r < 0) | |
624 | log_debug_errno(r, "Failed to parse T1 time, ignoring: %m"); | |
a6cc569e TG |
625 | break; |
626 | ||
22805d92 | 627 | case SD_DHCP_OPTION_REBINDING_T2_TIME: |
0339cd77 LP |
628 | r = lease_parse_u32(option, len, &lease->t2, 1); |
629 | if (r < 0) | |
630 | log_debug_errno(r, "Failed to parse T2 time, ignoring: %m"); | |
a6cc569e | 631 | break; |
e1ea665e | 632 | |
22805d92 | 633 | case SD_DHCP_OPTION_CLASSLESS_STATIC_ROUTE: |
0339cd77 | 634 | r = lease_parse_classless_routes( |
2d03c0b8 LP |
635 | option, len, |
636 | &lease->static_route, | |
637 | &lease->static_route_size, | |
638 | &lease->static_route_allocated); | |
0339cd77 LP |
639 | if (r < 0) |
640 | log_debug_errno(r, "Failed to parse classless routes, ignoring: %m"); | |
641 | break; | |
e43a8393 | 642 | |
22805d92 | 643 | case SD_DHCP_OPTION_NEW_TZDB_TIMEZONE: { |
8eb9058d LP |
644 | _cleanup_free_ char *tz = NULL; |
645 | ||
646 | r = lease_parse_string(option, len, &tz); | |
0339cd77 LP |
647 | if (r < 0) { |
648 | log_debug_errno(r, "Failed to parse timezone option, ignoring: %m"); | |
649 | return 0; | |
650 | } | |
8eb9058d | 651 | |
089fb865 | 652 | if (!timezone_is_valid(tz, LOG_DEBUG)) { |
0339cd77 LP |
653 | log_debug_errno(r, "Timezone is not valid, ignoring: %m"); |
654 | return 0; | |
655 | } | |
8eb9058d | 656 | |
f9ecfd3b | 657 | free_and_replace(lease->timezone, tz); |
0339cd77 | 658 | |
8eb9058d LP |
659 | break; |
660 | } | |
661 | ||
22805d92 | 662 | case SD_DHCP_OPTION_VENDOR_SPECIFIC: |
2d03c0b8 | 663 | |
0339cd77 LP |
664 | if (len <= 0) |
665 | lease->vendor_specific = mfree(lease->vendor_specific); | |
666 | else { | |
667 | void *p; | |
668 | ||
669 | p = memdup(option, len); | |
670 | if (!p) | |
e43a8393 | 671 | return -ENOMEM; |
e43a8393 | 672 | |
0339cd77 LP |
673 | free(lease->vendor_specific); |
674 | lease->vendor_specific = p; | |
675 | } | |
7e753d9d | 676 | |
0339cd77 LP |
677 | lease->vendor_specific_len = len; |
678 | break; | |
7e753d9d | 679 | |
22805d92 | 680 | case SD_DHCP_OPTION_PRIVATE_BASE ... SD_DHCP_OPTION_PRIVATE_LAST: |
7e753d9d AC |
681 | r = dhcp_lease_insert_private_option(lease, code, option, len); |
682 | if (r < 0) | |
683 | return r; | |
0339cd77 LP |
684 | |
685 | break; | |
686 | ||
687 | default: | |
f693e9b3 | 688 | log_debug("Ignoring option DHCP option %"PRIu8" while parsing.", code); |
0339cd77 | 689 | break; |
a6cc569e TG |
690 | } |
691 | ||
692 | return 0; | |
693 | } | |
694 | ||
b85bc551 DW |
695 | /* Parses compressed domain names. */ |
696 | int dhcp_lease_parse_search_domains(const uint8_t *option, size_t len, char ***domains) { | |
697 | _cleanup_strv_free_ char **names = NULL; | |
698 | size_t pos = 0, cnt = 0; | |
699 | int r; | |
700 | ||
701 | assert(domains); | |
702 | assert_return(option && len > 0, -ENODATA); | |
703 | ||
704 | while (pos < len) { | |
705 | _cleanup_free_ char *name = NULL; | |
706 | size_t n = 0, allocated = 0; | |
707 | size_t jump_barrier = pos, next_chunk = 0; | |
708 | bool first = true; | |
709 | ||
710 | for (;;) { | |
711 | uint8_t c; | |
712 | c = option[pos++]; | |
713 | ||
714 | if (c == 0) { | |
715 | /* End of name */ | |
716 | break; | |
717 | } else if (c <= 63) { | |
718 | const char *label; | |
719 | ||
720 | /* Literal label */ | |
721 | label = (const char*) (option + pos); | |
722 | pos += c; | |
723 | if (pos >= len) | |
724 | return -EBADMSG; | |
725 | ||
726 | if (!GREEDY_REALLOC(name, allocated, n + !first + DNS_LABEL_ESCAPED_MAX)) | |
727 | return -ENOMEM; | |
728 | ||
729 | if (first) | |
730 | first = false; | |
731 | else | |
732 | name[n++] = '.'; | |
733 | ||
734 | r = dns_label_escape(label, c, name + n, DNS_LABEL_ESCAPED_MAX); | |
735 | if (r < 0) | |
736 | return r; | |
737 | ||
738 | n += r; | |
739 | } else if ((c & 0xc0) == 0xc0) { | |
740 | /* Pointer */ | |
741 | ||
742 | uint8_t d; | |
743 | uint16_t ptr; | |
744 | ||
745 | if (pos >= len) | |
746 | return -EBADMSG; | |
747 | ||
748 | d = option[pos++]; | |
749 | ptr = (uint16_t) (c & ~0xc0) << 8 | (uint16_t) d; | |
750 | ||
751 | /* Jumps are limited to a "prior occurrence" (RFC-1035 4.1.4) */ | |
752 | if (ptr >= jump_barrier) | |
753 | return -EBADMSG; | |
754 | jump_barrier = ptr; | |
755 | ||
756 | /* Save current location so we don't end up re-parsing what's parsed so far. */ | |
757 | if (next_chunk == 0) | |
758 | next_chunk = pos; | |
759 | ||
760 | pos = ptr; | |
761 | } else | |
762 | return -EBADMSG; | |
763 | } | |
764 | ||
765 | if (!GREEDY_REALLOC(name, allocated, n + 1)) | |
766 | return -ENOMEM; | |
767 | name[n] = 0; | |
768 | ||
769 | r = strv_extend(&names, name); | |
770 | if (r < 0) | |
771 | return r; | |
772 | ||
773 | cnt++; | |
774 | ||
775 | if (next_chunk != 0) | |
776 | pos = next_chunk; | |
777 | } | |
778 | ||
ae2a15bc | 779 | *domains = TAKE_PTR(names); |
b85bc551 DW |
780 | |
781 | return cnt; | |
782 | } | |
783 | ||
0339cd77 | 784 | int dhcp_lease_insert_private_option(sd_dhcp_lease *lease, uint8_t tag, const void *data, uint8_t len) { |
7e753d9d AC |
785 | struct sd_dhcp_raw_option *cur, *option; |
786 | ||
0339cd77 LP |
787 | assert(lease); |
788 | ||
7e753d9d AC |
789 | LIST_FOREACH(options, cur, lease->private_options) { |
790 | if (tag < cur->tag) | |
791 | break; | |
0339cd77 LP |
792 | if (tag == cur->tag) { |
793 | log_debug("Ignoring duplicate option, tagged %i.", tag); | |
7e753d9d AC |
794 | return 0; |
795 | } | |
796 | } | |
797 | ||
798 | option = new(struct sd_dhcp_raw_option, 1); | |
799 | if (!option) | |
800 | return -ENOMEM; | |
801 | ||
802 | option->tag = tag; | |
803 | option->length = len; | |
804 | option->data = memdup(data, len); | |
805 | if (!option->data) { | |
806 | free(option); | |
807 | return -ENOMEM; | |
808 | } | |
809 | ||
810 | LIST_INSERT_BEFORE(options, lease->private_options, cur, option); | |
7e753d9d AC |
811 | return 0; |
812 | } | |
813 | ||
a6cc569e | 814 | int dhcp_lease_new(sd_dhcp_lease **ret) { |
6e00a806 | 815 | sd_dhcp_lease *lease; |
a6cc569e TG |
816 | |
817 | lease = new0(sd_dhcp_lease, 1); | |
818 | if (!lease) | |
819 | return -ENOMEM; | |
820 | ||
8ddbeaa2 | 821 | lease->router = INADDR_ANY; |
3733eec3 | 822 | lease->n_ref = 1; |
a6cc569e TG |
823 | |
824 | *ret = lease; | |
a6cc569e TG |
825 | return 0; |
826 | } | |
fe8db0c5 | 827 | |
bd91b83e | 828 | int dhcp_lease_save(sd_dhcp_lease *lease, const char *lease_file) { |
fe8db0c5 TG |
829 | _cleanup_free_ char *temp_path = NULL; |
830 | _cleanup_fclose_ FILE *f = NULL; | |
a073309f | 831 | struct sd_dhcp_raw_option *option; |
fe8db0c5 | 832 | struct in_addr address; |
a2ba62c7 | 833 | const struct in_addr *addresses; |
e4735228 | 834 | const void *client_id, *data; |
e43a8393 | 835 | size_t client_id_len, data_len; |
fe8db0c5 TG |
836 | const char *string; |
837 | uint16_t mtu; | |
f8693fc7 | 838 | _cleanup_free_ sd_dhcp_route **routes = NULL; |
b85bc551 | 839 | char **search_domains = NULL; |
0339cd77 | 840 | uint32_t t1, t2, lifetime; |
fe8db0c5 TG |
841 | int r; |
842 | ||
843 | assert(lease); | |
844 | assert(lease_file); | |
845 | ||
fe8db0c5 TG |
846 | r = fopen_temporary(lease_file, &f, &temp_path); |
847 | if (r < 0) | |
dacd6cee | 848 | goto fail; |
fe8db0c5 | 849 | |
0d536673 LP |
850 | (void) __fsetlocking(f, FSETLOCKING_BYCALLER); |
851 | (void) fchmod(fileno(f), 0644); | |
fe8db0c5 | 852 | |
fe8db0c5 | 853 | fprintf(f, |
0339cd77 | 854 | "# This is private data. Do not parse.\n"); |
fe8db0c5 | 855 | |
0339cd77 LP |
856 | r = sd_dhcp_lease_get_address(lease, &address); |
857 | if (r >= 0) | |
858 | fprintf(f, "ADDRESS=%s\n", inet_ntoa(address)); | |
fe8db0c5 | 859 | |
0339cd77 LP |
860 | r = sd_dhcp_lease_get_netmask(lease, &address); |
861 | if (r >= 0) | |
862 | fprintf(f, "NETMASK=%s\n", inet_ntoa(address)); | |
fe8db0c5 | 863 | |
8ddbeaa2 UTL |
864 | r = sd_dhcp_lease_get_router(lease, &address); |
865 | if (r >= 0) | |
866 | fprintf(f, "ROUTER=%s\n", inet_ntoa(address)); | |
867 | ||
0ad853bc | 868 | r = sd_dhcp_lease_get_server_identifier(lease, &address); |
109731eb | 869 | if (r >= 0) |
0339cd77 | 870 | fprintf(f, "SERVER_ADDRESS=%s\n", inet_ntoa(address)); |
0ad853bc | 871 | |
8e34a618 | 872 | r = sd_dhcp_lease_get_next_server(lease, &address); |
109731eb TG |
873 | if (r >= 0) |
874 | fprintf(f, "NEXT_SERVER=%s\n", inet_ntoa(address)); | |
8e34a618 | 875 | |
0339cd77 LP |
876 | r = sd_dhcp_lease_get_broadcast(lease, &address); |
877 | if (r >= 0) | |
878 | fprintf(f, "BROADCAST=%s\n", inet_ntoa(address)); | |
879 | ||
fe8db0c5 TG |
880 | r = sd_dhcp_lease_get_mtu(lease, &mtu); |
881 | if (r >= 0) | |
882 | fprintf(f, "MTU=%" PRIu16 "\n", mtu); | |
883 | ||
0339cd77 LP |
884 | r = sd_dhcp_lease_get_t1(lease, &t1); |
885 | if (r >= 0) | |
886 | fprintf(f, "T1=%" PRIu32 "\n", t1); | |
887 | ||
888 | r = sd_dhcp_lease_get_t2(lease, &t2); | |
109731eb | 889 | if (r >= 0) |
0339cd77 LP |
890 | fprintf(f, "T2=%" PRIu32 "\n", t2); |
891 | ||
892 | r = sd_dhcp_lease_get_lifetime(lease, &lifetime); | |
893 | if (r >= 0) | |
894 | fprintf(f, "LIFETIME=%" PRIu32 "\n", lifetime); | |
895 | ||
896 | r = sd_dhcp_lease_get_dns(lease, &addresses); | |
897 | if (r > 0) { | |
0d536673 | 898 | fputs("DNS=", f); |
b0e39c82 | 899 | serialize_in_addrs(f, addresses, r); |
0d536673 | 900 | fputs("\n", f); |
0339cd77 | 901 | } |
109731eb | 902 | |
a2ba62c7 | 903 | r = sd_dhcp_lease_get_ntp(lease, &addresses); |
0339cd77 | 904 | if (r > 0) { |
0d536673 | 905 | fputs("NTP=", f); |
b0e39c82 | 906 | serialize_in_addrs(f, addresses, r); |
0d536673 | 907 | fputs("\n", f); |
0339cd77 | 908 | } |
fe8db0c5 TG |
909 | |
910 | r = sd_dhcp_lease_get_domainname(lease, &string); | |
911 | if (r >= 0) | |
912 | fprintf(f, "DOMAINNAME=%s\n", string); | |
913 | ||
b85bc551 DW |
914 | r = sd_dhcp_lease_get_search_domains(lease, &search_domains); |
915 | if (r > 0) { | |
0d536673 | 916 | fputs("DOMAIN_SEARCH_LIST=", f); |
b85bc551 | 917 | fputstrv(f, search_domains, NULL, NULL); |
0d536673 | 918 | fputs("\n", f); |
b85bc551 DW |
919 | } |
920 | ||
fe8db0c5 TG |
921 | r = sd_dhcp_lease_get_hostname(lease, &string); |
922 | if (r >= 0) | |
923 | fprintf(f, "HOSTNAME=%s\n", string); | |
924 | ||
ce78df79 TG |
925 | r = sd_dhcp_lease_get_root_path(lease, &string); |
926 | if (r >= 0) | |
927 | fprintf(f, "ROOT_PATH=%s\n", string); | |
928 | ||
a2ba62c7 | 929 | r = sd_dhcp_lease_get_routes(lease, &routes); |
0339cd77 | 930 | if (r > 0) |
a2ba62c7 | 931 | serialize_dhcp_routes(f, "ROUTES", routes, r); |
e1ea665e | 932 | |
8eb9058d LP |
933 | r = sd_dhcp_lease_get_timezone(lease, &string); |
934 | if (r >= 0) | |
935 | fprintf(f, "TIMEZONE=%s\n", string); | |
936 | ||
e37f74a6 DW |
937 | r = sd_dhcp_lease_get_client_id(lease, &client_id, &client_id_len); |
938 | if (r >= 0) { | |
3587161a | 939 | _cleanup_free_ char *client_id_hex = NULL; |
e37f74a6 | 940 | |
dde8bb32 | 941 | client_id_hex = hexmem(client_id, client_id_len); |
e37f74a6 DW |
942 | if (!client_id_hex) { |
943 | r = -ENOMEM; | |
dacd6cee | 944 | goto fail; |
e37f74a6 DW |
945 | } |
946 | fprintf(f, "CLIENTID=%s\n", client_id_hex); | |
947 | } | |
948 | ||
e43a8393 BG |
949 | r = sd_dhcp_lease_get_vendor_specific(lease, &data, &data_len); |
950 | if (r >= 0) { | |
951 | _cleanup_free_ char *option_hex = NULL; | |
952 | ||
953 | option_hex = hexmem(data, data_len); | |
954 | if (!option_hex) { | |
955 | r = -ENOMEM; | |
dacd6cee | 956 | goto fail; |
e43a8393 BG |
957 | } |
958 | fprintf(f, "VENDOR_SPECIFIC=%s\n", option_hex); | |
959 | } | |
960 | ||
a073309f | 961 | LIST_FOREACH(options, option, lease->private_options) { |
dbcb4a90 | 962 | char key[STRLEN("OPTION_000")+1]; |
0339cd77 | 963 | |
d054f0a4 | 964 | xsprintf(key, "OPTION_%" PRIu8, option->tag); |
a073309f AC |
965 | r = serialize_dhcp_option(f, key, option->data, option->length); |
966 | if (r < 0) | |
967 | goto fail; | |
968 | } | |
969 | ||
dacd6cee LP |
970 | r = fflush_and_check(f); |
971 | if (r < 0) | |
972 | goto fail; | |
fe8db0c5 | 973 | |
dacd6cee | 974 | if (rename(temp_path, lease_file) < 0) { |
fe8db0c5 | 975 | r = -errno; |
dacd6cee | 976 | goto fail; |
fe8db0c5 TG |
977 | } |
978 | ||
dacd6cee LP |
979 | return 0; |
980 | ||
981 | fail: | |
982 | if (temp_path) | |
983 | (void) unlink(temp_path); | |
fe8db0c5 | 984 | |
dacd6cee | 985 | return log_error_errno(r, "Failed to save lease data %s: %m", lease_file); |
fe8db0c5 TG |
986 | } |
987 | ||
bd91b83e | 988 | int dhcp_lease_load(sd_dhcp_lease **ret, const char *lease_file) { |
0339cd77 | 989 | |
4afd3348 | 990 | _cleanup_(sd_dhcp_lease_unrefp) sd_dhcp_lease *lease = NULL; |
0339cd77 LP |
991 | _cleanup_free_ char |
992 | *address = NULL, | |
993 | *router = NULL, | |
994 | *netmask = NULL, | |
995 | *server_address = NULL, | |
996 | *next_server = NULL, | |
997 | *broadcast = NULL, | |
998 | *dns = NULL, | |
999 | *ntp = NULL, | |
1000 | *mtu = NULL, | |
1001 | *routes = NULL, | |
b85bc551 | 1002 | *domains = NULL, |
0339cd77 LP |
1003 | *client_id_hex = NULL, |
1004 | *vendor_specific_hex = NULL, | |
1005 | *lifetime = NULL, | |
1006 | *t1 = NULL, | |
1007 | *t2 = NULL, | |
22805d92 | 1008 | *options[SD_DHCP_OPTION_PRIVATE_LAST - SD_DHCP_OPTION_PRIVATE_BASE + 1] = {}; |
0339cd77 | 1009 | |
a073309f | 1010 | int r, i; |
fe8db0c5 TG |
1011 | |
1012 | assert(lease_file); | |
1013 | assert(ret); | |
1014 | ||
1015 | r = dhcp_lease_new(&lease); | |
1016 | if (r < 0) | |
1017 | return r; | |
1018 | ||
1a5a177e | 1019 | r = parse_env_file(NULL, lease_file, NEWLINE, |
fe8db0c5 TG |
1020 | "ADDRESS", &address, |
1021 | "ROUTER", &router, | |
1022 | "NETMASK", &netmask, | |
0ad853bc | 1023 | "SERVER_IDENTIFIER", &server_address, |
8e34a618 | 1024 | "NEXT_SERVER", &next_server, |
0339cd77 | 1025 | "BROADCAST", &broadcast, |
109731eb TG |
1026 | "DNS", &dns, |
1027 | "NTP", &ntp, | |
fe8db0c5 TG |
1028 | "MTU", &mtu, |
1029 | "DOMAINNAME", &lease->domainname, | |
1030 | "HOSTNAME", &lease->hostname, | |
b85bc551 | 1031 | "DOMAIN_SEARCH_LIST", &domains, |
ce78df79 | 1032 | "ROOT_PATH", &lease->root_path, |
e1ea665e | 1033 | "ROUTES", &routes, |
e37f74a6 | 1034 | "CLIENTID", &client_id_hex, |
8eb9058d | 1035 | "TIMEZONE", &lease->timezone, |
e43a8393 | 1036 | "VENDOR_SPECIFIC", &vendor_specific_hex, |
0339cd77 LP |
1037 | "LIFETIME", &lifetime, |
1038 | "T1", &t1, | |
1039 | "T2", &t2, | |
a073309f AC |
1040 | "OPTION_224", &options[0], |
1041 | "OPTION_225", &options[1], | |
1042 | "OPTION_226", &options[2], | |
1043 | "OPTION_227", &options[3], | |
1044 | "OPTION_228", &options[4], | |
1045 | "OPTION_229", &options[5], | |
1046 | "OPTION_230", &options[6], | |
1047 | "OPTION_231", &options[7], | |
1048 | "OPTION_232", &options[8], | |
1049 | "OPTION_233", &options[9], | |
1050 | "OPTION_234", &options[10], | |
1051 | "OPTION_235", &options[11], | |
1052 | "OPTION_236", &options[12], | |
1053 | "OPTION_237", &options[13], | |
1054 | "OPTION_238", &options[14], | |
1055 | "OPTION_239", &options[15], | |
1056 | "OPTION_240", &options[16], | |
1057 | "OPTION_241", &options[17], | |
1058 | "OPTION_242", &options[18], | |
1059 | "OPTION_243", &options[19], | |
1060 | "OPTION_244", &options[20], | |
1061 | "OPTION_245", &options[21], | |
1062 | "OPTION_246", &options[22], | |
1063 | "OPTION_247", &options[23], | |
1064 | "OPTION_248", &options[24], | |
1065 | "OPTION_249", &options[25], | |
1066 | "OPTION_250", &options[26], | |
1067 | "OPTION_251", &options[27], | |
1068 | "OPTION_252", &options[28], | |
1069 | "OPTION_253", &options[29], | |
1070 | "OPTION_254", &options[30], | |
fe8db0c5 | 1071 | NULL); |
fe8db0c5 TG |
1072 | if (r < 0) |
1073 | return r; | |
1074 | ||
0339cd77 LP |
1075 | if (address) { |
1076 | r = inet_pton(AF_INET, address, &lease->address); | |
1077 | if (r <= 0) | |
e26ea7fc | 1078 | log_debug("Failed to parse address %s, ignoring.", address); |
0339cd77 | 1079 | } |
fe8db0c5 | 1080 | |
8ddbeaa2 | 1081 | if (router) { |
0339cd77 LP |
1082 | r = inet_pton(AF_INET, router, &lease->router); |
1083 | if (r <= 0) | |
e26ea7fc | 1084 | log_debug("Failed to parse router %s, ignoring.", router); |
8ddbeaa2 | 1085 | } |
fe8db0c5 | 1086 | |
0339cd77 LP |
1087 | if (netmask) { |
1088 | r = inet_pton(AF_INET, netmask, &lease->subnet_mask); | |
1089 | if (r <= 0) | |
e26ea7fc | 1090 | log_debug("Failed to parse netmask %s, ignoring.", netmask); |
0339cd77 LP |
1091 | else |
1092 | lease->have_subnet_mask = true; | |
1093 | } | |
fe8db0c5 | 1094 | |
0ad853bc | 1095 | if (server_address) { |
0339cd77 LP |
1096 | r = inet_pton(AF_INET, server_address, &lease->server_address); |
1097 | if (r <= 0) | |
e26ea7fc | 1098 | log_debug("Failed to parse server address %s, ignoring.", server_address); |
0ad853bc TG |
1099 | } |
1100 | ||
8e34a618 | 1101 | if (next_server) { |
0339cd77 LP |
1102 | r = inet_pton(AF_INET, next_server, &lease->next_server); |
1103 | if (r <= 0) | |
e26ea7fc | 1104 | log_debug("Failed to parse next server %s, ignoring.", next_server); |
0339cd77 | 1105 | } |
8e34a618 | 1106 | |
0339cd77 LP |
1107 | if (broadcast) { |
1108 | r = inet_pton(AF_INET, broadcast, &lease->broadcast); | |
1109 | if (r <= 0) | |
e26ea7fc | 1110 | log_debug("Failed to parse broadcast address %s, ignoring.", broadcast); |
0339cd77 LP |
1111 | else |
1112 | lease->have_broadcast = true; | |
8e34a618 TG |
1113 | } |
1114 | ||
109731eb | 1115 | if (dns) { |
a2ba62c7 | 1116 | r = deserialize_in_addrs(&lease->dns, dns); |
109731eb | 1117 | if (r < 0) |
0339cd77 LP |
1118 | log_debug_errno(r, "Failed to deserialize DNS servers %s, ignoring: %m", dns); |
1119 | else | |
1120 | lease->dns_size = r; | |
109731eb TG |
1121 | } |
1122 | ||
1123 | if (ntp) { | |
a2ba62c7 | 1124 | r = deserialize_in_addrs(&lease->ntp, ntp); |
109731eb | 1125 | if (r < 0) |
0339cd77 LP |
1126 | log_debug_errno(r, "Failed to deserialize NTP servers %s, ignoring: %m", ntp); |
1127 | else | |
1128 | lease->ntp_size = r; | |
109731eb TG |
1129 | } |
1130 | ||
fe8db0c5 | 1131 | if (mtu) { |
0339cd77 LP |
1132 | r = safe_atou16(mtu, &lease->mtu); |
1133 | if (r < 0) | |
1134 | log_debug_errno(r, "Failed to parse MTU %s, ignoring: %m", mtu); | |
fe8db0c5 TG |
1135 | } |
1136 | ||
b85bc551 DW |
1137 | if (domains) { |
1138 | _cleanup_strv_free_ char **a = NULL; | |
1139 | a = strv_split(domains, " "); | |
1140 | if (!a) | |
1141 | return -ENOMEM; | |
1142 | ||
1143 | if (!strv_isempty(a)) { | |
1144 | lease->search_domains = a; | |
1145 | a = NULL; | |
1146 | } | |
1147 | } | |
1148 | ||
e1ea665e | 1149 | if (routes) { |
0339cd77 LP |
1150 | r = deserialize_dhcp_routes( |
1151 | &lease->static_route, | |
1152 | &lease->static_route_size, | |
1153 | &lease->static_route_allocated, | |
1154 | routes); | |
1155 | if (r < 0) | |
1156 | log_debug_errno(r, "Failed to parse DHCP routes %s, ignoring: %m", routes); | |
1157 | } | |
1158 | ||
1159 | if (lifetime) { | |
1160 | r = safe_atou32(lifetime, &lease->lifetime); | |
1161 | if (r < 0) | |
1162 | log_debug_errno(r, "Failed to parse lifetime %s, ignoring: %m", lifetime); | |
1163 | } | |
1164 | ||
1165 | if (t1) { | |
1166 | r = safe_atou32(t1, &lease->t1); | |
1167 | if (r < 0) | |
1168 | log_debug_errno(r, "Failed to parse T1 %s, ignoring: %m", t1); | |
1169 | } | |
1170 | ||
1171 | if (t2) { | |
1172 | r = safe_atou32(t2, &lease->t2); | |
e1ea665e | 1173 | if (r < 0) |
0339cd77 | 1174 | log_debug_errno(r, "Failed to parse T2 %s, ignoring: %m", t2); |
e1ea665e EY |
1175 | } |
1176 | ||
e37f74a6 | 1177 | if (client_id_hex) { |
ce088d6f | 1178 | r = unhexmem(client_id_hex, (size_t) -1, &lease->client_id, &lease->client_id_len); |
30494563 | 1179 | if (r < 0) |
0339cd77 | 1180 | log_debug_errno(r, "Failed to parse client ID %s, ignoring: %m", client_id_hex); |
e37f74a6 DW |
1181 | } |
1182 | ||
e43a8393 | 1183 | if (vendor_specific_hex) { |
ce088d6f | 1184 | r = unhexmem(vendor_specific_hex, (size_t) -1, &lease->vendor_specific, &lease->vendor_specific_len); |
e43a8393 | 1185 | if (r < 0) |
0339cd77 | 1186 | log_debug_errno(r, "Failed to parse vendor specific data %s, ignoring: %m", vendor_specific_hex); |
e43a8393 BG |
1187 | } |
1188 | ||
22805d92 | 1189 | for (i = 0; i <= SD_DHCP_OPTION_PRIVATE_LAST - SD_DHCP_OPTION_PRIVATE_BASE; i++) { |
e4735228 | 1190 | _cleanup_free_ void *data = NULL; |
a073309f AC |
1191 | size_t len; |
1192 | ||
1193 | if (!options[i]) | |
1194 | continue; | |
1195 | ||
ce088d6f | 1196 | r = unhexmem(options[i], (size_t) -1, &data, &len); |
0339cd77 LP |
1197 | if (r < 0) { |
1198 | log_debug_errno(r, "Failed to parse private DHCP option %s, ignoring: %m", options[i]); | |
1199 | continue; | |
1200 | } | |
a073309f | 1201 | |
22805d92 | 1202 | r = dhcp_lease_insert_private_option(lease, SD_DHCP_OPTION_PRIVATE_BASE + i, data, len); |
626be147 | 1203 | if (r < 0) |
a073309f AC |
1204 | return r; |
1205 | } | |
1206 | ||
1cc6c93a | 1207 | *ret = TAKE_PTR(lease); |
fe8db0c5 TG |
1208 | |
1209 | return 0; | |
1210 | } | |
9e64dd72 TG |
1211 | |
1212 | int dhcp_lease_set_default_subnet_mask(sd_dhcp_lease *lease) { | |
0339cd77 | 1213 | struct in_addr address, mask; |
df40eee8 | 1214 | int r; |
9e64dd72 TG |
1215 | |
1216 | assert(lease); | |
9e64dd72 | 1217 | |
0339cd77 LP |
1218 | if (lease->address == 0) |
1219 | return -ENODATA; | |
1220 | ||
df40eee8 | 1221 | address.s_addr = lease->address; |
9e64dd72 TG |
1222 | |
1223 | /* fall back to the default subnet masks based on address class */ | |
5a941f5f | 1224 | r = in4_addr_default_subnet_mask(&address, &mask); |
df40eee8 TG |
1225 | if (r < 0) |
1226 | return r; | |
9e64dd72 | 1227 | |
df40eee8 | 1228 | lease->subnet_mask = mask.s_addr; |
0339cd77 | 1229 | lease->have_subnet_mask = true; |
9e64dd72 TG |
1230 | |
1231 | return 0; | |
1232 | } | |
e37f74a6 | 1233 | |
0339cd77 | 1234 | int sd_dhcp_lease_get_client_id(sd_dhcp_lease *lease, const void **client_id, size_t *client_id_len) { |
e37f74a6 DW |
1235 | assert_return(lease, -EINVAL); |
1236 | assert_return(client_id, -EINVAL); | |
1237 | assert_return(client_id_len, -EINVAL); | |
1238 | ||
0339cd77 LP |
1239 | if (!lease->client_id) |
1240 | return -ENODATA; | |
1241 | ||
e37f74a6 DW |
1242 | *client_id = lease->client_id; |
1243 | *client_id_len = lease->client_id_len; | |
0339cd77 | 1244 | |
e37f74a6 DW |
1245 | return 0; |
1246 | } | |
1247 | ||
0339cd77 | 1248 | int dhcp_lease_set_client_id(sd_dhcp_lease *lease, const void *client_id, size_t client_id_len) { |
e37f74a6 | 1249 | assert_return(lease, -EINVAL); |
0339cd77 LP |
1250 | assert_return(client_id || client_id_len <= 0, -EINVAL); |
1251 | ||
1252 | if (client_id_len <= 0) | |
1253 | lease->client_id = mfree(lease->client_id); | |
1254 | else { | |
1255 | void *p; | |
e37f74a6 | 1256 | |
0339cd77 LP |
1257 | p = memdup(client_id, client_id_len); |
1258 | if (!p) | |
1259 | return -ENOMEM; | |
e37f74a6 | 1260 | |
0339cd77 LP |
1261 | free(lease->client_id); |
1262 | lease->client_id = p; | |
e37f74a6 DW |
1263 | lease->client_id_len = client_id_len; |
1264 | } | |
1265 | ||
1266 | return 0; | |
1267 | } | |
8eb9058d | 1268 | |
64d6c229 | 1269 | int sd_dhcp_lease_get_timezone(sd_dhcp_lease *lease, const char **tz) { |
8eb9058d | 1270 | assert_return(lease, -EINVAL); |
64d6c229 | 1271 | assert_return(tz, -EINVAL); |
8eb9058d LP |
1272 | |
1273 | if (!lease->timezone) | |
0339cd77 | 1274 | return -ENODATA; |
8eb9058d | 1275 | |
64d6c229 | 1276 | *tz = lease->timezone; |
8eb9058d LP |
1277 | return 0; |
1278 | } | |
f8693fc7 BG |
1279 | |
1280 | int sd_dhcp_route_get_destination(sd_dhcp_route *route, struct in_addr *destination) { | |
1281 | assert_return(route, -EINVAL); | |
1282 | assert_return(destination, -EINVAL); | |
1283 | ||
1284 | *destination = route->dst_addr; | |
1285 | return 0; | |
1286 | } | |
1287 | ||
1288 | int sd_dhcp_route_get_destination_prefix_length(sd_dhcp_route *route, uint8_t *length) { | |
1289 | assert_return(route, -EINVAL); | |
1290 | assert_return(length, -EINVAL); | |
1291 | ||
1292 | *length = route->dst_prefixlen; | |
1293 | return 0; | |
1294 | } | |
1295 | ||
1296 | int sd_dhcp_route_get_gateway(sd_dhcp_route *route, struct in_addr *gateway) { | |
1297 | assert_return(route, -EINVAL); | |
1298 | assert_return(gateway, -EINVAL); | |
1299 | ||
1300 | *gateway = route->gw_addr; | |
1301 | return 0; | |
1302 | } |