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Commit | Line | Data |
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a6cc569e TG |
1 | /*** |
2 | This file is part of systemd. | |
3 | ||
4 | Copyright (C) 2013 Intel Corporation. All rights reserved. | |
5 | Copyright (C) 2014 Tom Gundersen | |
6 | ||
7 | systemd is free software; you can redistribute it and/or modify it | |
8 | under the terms of the GNU Lesser General Public License as published by | |
9 | the Free Software Foundation; either version 2.1 of the License, or | |
10 | (at your option) any later version. | |
11 | ||
12 | systemd is distributed in the hope that it will be useful, but | |
13 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
15 | Lesser General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU Lesser General Public License | |
18 | along with systemd; If not, see <http://www.gnu.org/licenses/>. | |
19 | ***/ | |
20 | ||
07630cea | 21 | #include <arpa/inet.h> |
a6cc569e | 22 | #include <errno.h> |
a6cc569e | 23 | #include <stdio.h> |
07630cea LP |
24 | #include <stdlib.h> |
25 | #include <string.h> | |
26 | ||
27 | #include "sd-dhcp-lease.h" | |
a6cc569e | 28 | |
07630cea LP |
29 | #include "dhcp-lease-internal.h" |
30 | #include "dhcp-protocol.h" | |
31 | #include "dns-domain.h" | |
3ffd4af2 | 32 | #include "fd-util.h" |
fe8db0c5 | 33 | #include "fileio.h" |
958b66ea | 34 | #include "hostname-util.h" |
07630cea | 35 | #include "in-addr-util.h" |
0339cd77 | 36 | #include "network-internal.h" |
07630cea | 37 | #include "unaligned.h" |
a6cc569e TG |
38 | |
39 | int sd_dhcp_lease_get_address(sd_dhcp_lease *lease, struct in_addr *addr) { | |
40 | assert_return(lease, -EINVAL); | |
41 | assert_return(addr, -EINVAL); | |
42 | ||
0339cd77 LP |
43 | if (lease->address == 0) |
44 | return -ENODATA; | |
45 | ||
a6cc569e | 46 | addr->s_addr = lease->address; |
0339cd77 LP |
47 | return 0; |
48 | } | |
a6cc569e | 49 | |
0339cd77 LP |
50 | int sd_dhcp_lease_get_broadcast(sd_dhcp_lease *lease, struct in_addr *addr) { |
51 | assert_return(lease, -EINVAL); | |
52 | assert_return(addr, -EINVAL); | |
53 | ||
54 | if (!lease->have_broadcast) | |
55 | return -ENODATA; | |
56 | ||
57 | addr->s_addr = lease->broadcast; | |
a6cc569e TG |
58 | return 0; |
59 | } | |
60 | ||
68ceb9df PF |
61 | int sd_dhcp_lease_get_lifetime(sd_dhcp_lease *lease, uint32_t *lifetime) { |
62 | assert_return(lease, -EINVAL); | |
1c6eb4e3 | 63 | assert_return(lifetime, -EINVAL); |
68ceb9df | 64 | |
0339cd77 LP |
65 | if (lease->lifetime <= 0) |
66 | return -ENODATA; | |
67 | ||
68ceb9df | 68 | *lifetime = lease->lifetime; |
0339cd77 LP |
69 | return 0; |
70 | } | |
68ceb9df | 71 | |
0339cd77 LP |
72 | int sd_dhcp_lease_get_t1(sd_dhcp_lease *lease, uint32_t *t1) { |
73 | assert_return(lease, -EINVAL); | |
74 | assert_return(t1, -EINVAL); | |
75 | ||
76 | if (lease->t1 <= 0) | |
77 | return -ENODATA; | |
78 | ||
79 | *t1 = lease->t1; | |
80 | return 0; | |
81 | } | |
82 | ||
83 | int sd_dhcp_lease_get_t2(sd_dhcp_lease *lease, uint32_t *t2) { | |
84 | assert_return(lease, -EINVAL); | |
85 | assert_return(t2, -EINVAL); | |
86 | ||
87 | if (lease->t2 <= 0) | |
88 | return -ENODATA; | |
89 | ||
90 | *t2 = lease->t2; | |
68ceb9df PF |
91 | return 0; |
92 | } | |
93 | ||
a6cc569e TG |
94 | int sd_dhcp_lease_get_mtu(sd_dhcp_lease *lease, uint16_t *mtu) { |
95 | assert_return(lease, -EINVAL); | |
96 | assert_return(mtu, -EINVAL); | |
97 | ||
0339cd77 LP |
98 | if (lease->mtu <= 0) |
99 | return -ENODATA; | |
a6cc569e | 100 | |
0339cd77 | 101 | *mtu = lease->mtu; |
a6cc569e TG |
102 | return 0; |
103 | } | |
104 | ||
a2ba62c7 | 105 | int sd_dhcp_lease_get_dns(sd_dhcp_lease *lease, const struct in_addr **addr) { |
a6cc569e TG |
106 | assert_return(lease, -EINVAL); |
107 | assert_return(addr, -EINVAL); | |
a6cc569e | 108 | |
0339cd77 LP |
109 | if (lease->dns_size <= 0) |
110 | return -ENODATA; | |
a6cc569e | 111 | |
0339cd77 LP |
112 | *addr = lease->dns; |
113 | return (int) lease->dns_size; | |
a6cc569e TG |
114 | } |
115 | ||
a2ba62c7 | 116 | int sd_dhcp_lease_get_ntp(sd_dhcp_lease *lease, const struct in_addr **addr) { |
46844696 TG |
117 | assert_return(lease, -EINVAL); |
118 | assert_return(addr, -EINVAL); | |
46844696 | 119 | |
0339cd77 LP |
120 | if (lease->ntp_size <= 0) |
121 | return -ENODATA; | |
46844696 | 122 | |
0339cd77 LP |
123 | *addr = lease->ntp; |
124 | return (int) lease->ntp_size; | |
46844696 TG |
125 | } |
126 | ||
a6cc569e TG |
127 | int sd_dhcp_lease_get_domainname(sd_dhcp_lease *lease, const char **domainname) { |
128 | assert_return(lease, -EINVAL); | |
129 | assert_return(domainname, -EINVAL); | |
130 | ||
0339cd77 LP |
131 | if (!lease->domainname) |
132 | return -ENODATA; | |
a6cc569e | 133 | |
0339cd77 | 134 | *domainname = lease->domainname; |
a6cc569e TG |
135 | return 0; |
136 | } | |
137 | ||
138 | int sd_dhcp_lease_get_hostname(sd_dhcp_lease *lease, const char **hostname) { | |
139 | assert_return(lease, -EINVAL); | |
140 | assert_return(hostname, -EINVAL); | |
141 | ||
0339cd77 LP |
142 | if (!lease->hostname) |
143 | return -ENODATA; | |
a6cc569e | 144 | |
0339cd77 | 145 | *hostname = lease->hostname; |
a6cc569e TG |
146 | return 0; |
147 | } | |
148 | ||
ce78df79 TG |
149 | int sd_dhcp_lease_get_root_path(sd_dhcp_lease *lease, const char **root_path) { |
150 | assert_return(lease, -EINVAL); | |
151 | assert_return(root_path, -EINVAL); | |
152 | ||
0339cd77 LP |
153 | if (!lease->root_path) |
154 | return -ENODATA; | |
ce78df79 | 155 | |
0339cd77 | 156 | *root_path = lease->root_path; |
ce78df79 TG |
157 | return 0; |
158 | } | |
159 | ||
a6cc569e TG |
160 | int sd_dhcp_lease_get_router(sd_dhcp_lease *lease, struct in_addr *addr) { |
161 | assert_return(lease, -EINVAL); | |
162 | assert_return(addr, -EINVAL); | |
163 | ||
0339cd77 LP |
164 | if (lease->router == 0) |
165 | return -ENODATA; | |
a6cc569e | 166 | |
0339cd77 | 167 | addr->s_addr = lease->router; |
a6cc569e TG |
168 | return 0; |
169 | } | |
170 | ||
171 | int sd_dhcp_lease_get_netmask(sd_dhcp_lease *lease, struct in_addr *addr) { | |
172 | assert_return(lease, -EINVAL); | |
173 | assert_return(addr, -EINVAL); | |
174 | ||
0339cd77 LP |
175 | if (!lease->have_subnet_mask) |
176 | return -ENODATA; | |
a6cc569e | 177 | |
0339cd77 | 178 | addr->s_addr = lease->subnet_mask; |
a6cc569e TG |
179 | return 0; |
180 | } | |
181 | ||
0ad853bc TG |
182 | int sd_dhcp_lease_get_server_identifier(sd_dhcp_lease *lease, struct in_addr *addr) { |
183 | assert_return(lease, -EINVAL); | |
184 | assert_return(addr, -EINVAL); | |
185 | ||
0339cd77 LP |
186 | if (lease->server_address == 0) |
187 | return -ENODATA; | |
0ad853bc | 188 | |
0339cd77 | 189 | addr->s_addr = lease->server_address; |
0ad853bc TG |
190 | return 0; |
191 | } | |
192 | ||
8e34a618 TG |
193 | int sd_dhcp_lease_get_next_server(sd_dhcp_lease *lease, struct in_addr *addr) { |
194 | assert_return(lease, -EINVAL); | |
195 | assert_return(addr, -EINVAL); | |
196 | ||
0339cd77 LP |
197 | if (lease->next_server == 0) |
198 | return -ENODATA; | |
8e34a618 | 199 | |
0339cd77 | 200 | addr->s_addr = lease->next_server; |
8e34a618 TG |
201 | return 0; |
202 | } | |
203 | ||
a2ba62c7 | 204 | int sd_dhcp_lease_get_routes(sd_dhcp_lease *lease, struct sd_dhcp_route **routes) { |
e1ea665e EY |
205 | assert_return(lease, -EINVAL); |
206 | assert_return(routes, -EINVAL); | |
e1ea665e | 207 | |
0339cd77 LP |
208 | if (lease->static_route_size <= 0) |
209 | return -ENODATA; | |
e1ea665e | 210 | |
0339cd77 LP |
211 | *routes = lease->static_route; |
212 | return (int) lease->static_route_size; | |
e1ea665e EY |
213 | } |
214 | ||
0339cd77 | 215 | int sd_dhcp_lease_get_vendor_specific(sd_dhcp_lease *lease, const void **data, size_t *data_len) { |
e43a8393 BG |
216 | assert_return(lease, -EINVAL); |
217 | assert_return(data, -EINVAL); | |
218 | assert_return(data_len, -EINVAL); | |
219 | ||
0339cd77 LP |
220 | if (lease->vendor_specific_len <= 0) |
221 | return -ENODATA; | |
e43a8393 BG |
222 | |
223 | *data = lease->vendor_specific; | |
224 | *data_len = lease->vendor_specific_len; | |
e43a8393 BG |
225 | return 0; |
226 | } | |
227 | ||
a6cc569e | 228 | sd_dhcp_lease *sd_dhcp_lease_ref(sd_dhcp_lease *lease) { |
3733eec3 LP |
229 | |
230 | if (!lease) | |
231 | return NULL; | |
232 | ||
233 | assert(lease->n_ref >= 1); | |
234 | lease->n_ref++; | |
a6cc569e TG |
235 | |
236 | return lease; | |
237 | } | |
238 | ||
239 | sd_dhcp_lease *sd_dhcp_lease_unref(sd_dhcp_lease *lease) { | |
7e753d9d | 240 | |
3733eec3 LP |
241 | if (!lease) |
242 | return NULL; | |
7e753d9d | 243 | |
3733eec3 LP |
244 | assert(lease->n_ref >= 1); |
245 | lease->n_ref--; | |
246 | ||
247 | if (lease->n_ref > 0) | |
248 | return NULL; | |
249 | ||
250 | while (lease->private_options) { | |
251 | struct sd_dhcp_raw_option *option = lease->private_options; | |
252 | ||
253 | LIST_REMOVE(options, lease->private_options, option); | |
254 | ||
255 | free(option->data); | |
256 | free(option); | |
a6cc569e TG |
257 | } |
258 | ||
3733eec3 LP |
259 | free(lease->hostname); |
260 | free(lease->domainname); | |
261 | free(lease->dns); | |
262 | free(lease->ntp); | |
263 | free(lease->static_route); | |
264 | free(lease->client_id); | |
265 | free(lease->vendor_specific); | |
266 | free(lease); | |
267 | ||
a6cc569e TG |
268 | return NULL; |
269 | } | |
270 | ||
0339cd77 | 271 | static int lease_parse_u32(const uint8_t *option, size_t len, uint32_t *ret, uint32_t min) { |
e140ae58 TG |
272 | assert(option); |
273 | assert(ret); | |
274 | ||
0339cd77 LP |
275 | if (len != 4) |
276 | return -EINVAL; | |
e140ae58 | 277 | |
0339cd77 LP |
278 | *ret = unaligned_read_be32((be32_t*) option); |
279 | if (*ret < min) | |
280 | *ret = min; | |
e140ae58 | 281 | |
0339cd77 | 282 | return 0; |
e140ae58 TG |
283 | } |
284 | ||
0339cd77 | 285 | static int lease_parse_u16(const uint8_t *option, size_t len, uint16_t *ret, uint16_t min) { |
e140ae58 TG |
286 | assert(option); |
287 | assert(ret); | |
288 | ||
0339cd77 LP |
289 | if (len != 2) |
290 | return -EINVAL; | |
e140ae58 | 291 | |
0339cd77 LP |
292 | *ret = unaligned_read_be16((be16_t*) option); |
293 | if (*ret < min) | |
294 | *ret = min; | |
f5c0c00f | 295 | |
0339cd77 | 296 | return 0; |
f5c0c00f TG |
297 | } |
298 | ||
0339cd77 | 299 | static int lease_parse_be32(const uint8_t *option, size_t len, be32_t *ret) { |
f5c0c00f TG |
300 | assert(option); |
301 | assert(ret); | |
302 | ||
0339cd77 LP |
303 | if (len != 4) |
304 | return -EINVAL; | |
f5c0c00f | 305 | |
0339cd77 LP |
306 | memcpy(ret, option, 4); |
307 | return 0; | |
f5c0c00f TG |
308 | } |
309 | ||
e140ae58 TG |
310 | static int lease_parse_string(const uint8_t *option, size_t len, char **ret) { |
311 | assert(option); | |
312 | assert(ret); | |
313 | ||
0339cd77 LP |
314 | if (len <= 0) |
315 | *ret = mfree(*ret); | |
316 | else { | |
e140ae58 TG |
317 | char *string; |
318 | ||
e989fd9b LP |
319 | /* |
320 | * One trailing NUL byte is OK, we don't mind. See: | |
321 | * https://github.com/systemd/systemd/issues/1337 | |
322 | */ | |
323 | if (memchr(option, 0, len - 1)) | |
43f447b1 LP |
324 | return -EINVAL; |
325 | ||
e989fd9b | 326 | string = strndup((const char *) option, len); |
e140ae58 | 327 | if (!string) |
43f447b1 | 328 | return -ENOMEM; |
e140ae58 TG |
329 | |
330 | free(*ret); | |
331 | *ret = string; | |
0339cd77 | 332 | } |
e140ae58 TG |
333 | |
334 | return 0; | |
335 | } | |
336 | ||
0339cd77 | 337 | static int lease_parse_in_addrs(const uint8_t *option, size_t len, struct in_addr **ret, size_t *n_ret) { |
e140ae58 TG |
338 | assert(option); |
339 | assert(ret); | |
0339cd77 | 340 | assert(n_ret); |
e140ae58 | 341 | |
0339cd77 LP |
342 | if (len <= 0) { |
343 | *ret = mfree(*ret); | |
344 | *n_ret = 0; | |
345 | } else { | |
346 | size_t n_addresses; | |
e140ae58 TG |
347 | struct in_addr *addresses; |
348 | ||
0339cd77 LP |
349 | if (len % 4 != 0) |
350 | return -EINVAL; | |
e140ae58 | 351 | |
0339cd77 LP |
352 | n_addresses = len / 4; |
353 | ||
354 | addresses = newdup(struct in_addr, option, n_addresses); | |
e140ae58 TG |
355 | if (!addresses) |
356 | return -ENOMEM; | |
357 | ||
358 | free(*ret); | |
359 | *ret = addresses; | |
0339cd77 | 360 | *n_ret = n_addresses; |
e140ae58 TG |
361 | } |
362 | ||
363 | return 0; | |
364 | } | |
365 | ||
0339cd77 LP |
366 | static int lease_parse_routes( |
367 | const uint8_t *option, size_t len, | |
368 | struct sd_dhcp_route **routes, size_t *routes_size, size_t *routes_allocated) { | |
e1ea665e EY |
369 | |
370 | struct in_addr addr; | |
371 | ||
0339cd77 | 372 | assert(option || len <= 0); |
e1ea665e EY |
373 | assert(routes); |
374 | assert(routes_size); | |
375 | assert(routes_allocated); | |
376 | ||
0339cd77 | 377 | if (len <= 0) |
e1ea665e EY |
378 | return 0; |
379 | ||
380 | if (len % 8 != 0) | |
381 | return -EINVAL; | |
382 | ||
383 | if (!GREEDY_REALLOC(*routes, *routes_allocated, *routes_size + (len / 8))) | |
384 | return -ENOMEM; | |
385 | ||
386 | while (len >= 8) { | |
387 | struct sd_dhcp_route *route = *routes + *routes_size; | |
1caa12d0 | 388 | int r; |
e1ea665e | 389 | |
1caa12d0 TG |
390 | r = in_addr_default_prefixlen((struct in_addr*) option, &route->dst_prefixlen); |
391 | if (r < 0) { | |
0339cd77 | 392 | log_debug("Failed to determine destination prefix length from class based IP, ignoring"); |
e1ea665e EY |
393 | continue; |
394 | } | |
395 | ||
0339cd77 | 396 | assert_se(lease_parse_be32(option, 4, &addr.s_addr) >= 0); |
e1ea665e EY |
397 | route->dst_addr = inet_makeaddr(inet_netof(addr), 0); |
398 | option += 4; | |
399 | ||
0339cd77 | 400 | assert_se(lease_parse_be32(option, 4, &route->gw_addr.s_addr) >= 0); |
e1ea665e EY |
401 | option += 4; |
402 | ||
403 | len -= 8; | |
404 | (*routes_size)++; | |
405 | } | |
406 | ||
407 | return 0; | |
408 | } | |
409 | ||
410 | /* parses RFC3442 Classless Static Route Option */ | |
0339cd77 LP |
411 | static int lease_parse_classless_routes( |
412 | const uint8_t *option, size_t len, | |
413 | struct sd_dhcp_route **routes, size_t *routes_size, size_t *routes_allocated) { | |
e1ea665e | 414 | |
0339cd77 | 415 | assert(option || len <= 0); |
e1ea665e EY |
416 | assert(routes); |
417 | assert(routes_size); | |
418 | assert(routes_allocated); | |
419 | ||
0339cd77 LP |
420 | if (len <= 0) |
421 | return 0; | |
422 | ||
e1ea665e EY |
423 | /* option format: (subnet-mask-width significant-subnet-octets gateway-ip)* */ |
424 | ||
425 | while (len > 0) { | |
426 | uint8_t dst_octets; | |
427 | struct sd_dhcp_route *route; | |
428 | ||
429 | if (!GREEDY_REALLOC(*routes, *routes_allocated, *routes_size + 1)) | |
0339cd77 | 430 | return -ENOMEM; |
e1ea665e EY |
431 | |
432 | route = *routes + *routes_size; | |
433 | ||
434 | dst_octets = (*option == 0 ? 0 : ((*option - 1) / 8) + 1); | |
435 | route->dst_prefixlen = *option; | |
436 | option++; | |
437 | len--; | |
438 | ||
439 | /* can't have more than 4 octets in IPv4 */ | |
440 | if (dst_octets > 4 || len < dst_octets) | |
441 | return -EINVAL; | |
442 | ||
443 | route->dst_addr.s_addr = 0; | |
444 | memcpy(&route->dst_addr.s_addr, option, dst_octets); | |
445 | option += dst_octets; | |
446 | len -= dst_octets; | |
447 | ||
448 | if (len < 4) | |
449 | return -EINVAL; | |
450 | ||
451 | lease_parse_be32(option, 4, &route->gw_addr.s_addr); | |
452 | option += 4; | |
453 | len -= 4; | |
454 | ||
455 | (*routes_size)++; | |
456 | } | |
457 | ||
458 | return 0; | |
459 | } | |
460 | ||
e4735228 | 461 | int dhcp_lease_parse_options(uint8_t code, uint8_t len, const void *option, void *userdata) { |
2d03c0b8 | 462 | sd_dhcp_lease *lease = userdata; |
e140ae58 TG |
463 | int r; |
464 | ||
465 | assert(lease); | |
a6cc569e TG |
466 | |
467 | switch(code) { | |
468 | ||
469 | case DHCP_OPTION_IP_ADDRESS_LEASE_TIME: | |
0339cd77 LP |
470 | r = lease_parse_u32(option, len, &lease->lifetime, 1); |
471 | if (r < 0) | |
472 | log_debug_errno(r, "Failed to parse lease time, ignoring: %m"); | |
473 | ||
a6cc569e TG |
474 | break; |
475 | ||
476 | case DHCP_OPTION_SERVER_IDENTIFIER: | |
0339cd77 LP |
477 | r = lease_parse_be32(option, len, &lease->server_address); |
478 | if (r < 0) | |
479 | log_debug_errno(r, "Failed to parse server identifier, ignoring: %m"); | |
480 | ||
a6cc569e TG |
481 | break; |
482 | ||
483 | case DHCP_OPTION_SUBNET_MASK: | |
0339cd77 LP |
484 | r = lease_parse_be32(option, len, &lease->subnet_mask); |
485 | if (r < 0) | |
486 | log_debug_errno(r, "Failed to parse subnet mask, ignoring: %m"); | |
487 | else | |
488 | lease->have_subnet_mask = true; | |
a6cc569e TG |
489 | break; |
490 | ||
f5c0c00f | 491 | case DHCP_OPTION_BROADCAST: |
0339cd77 LP |
492 | r = lease_parse_be32(option, len, &lease->broadcast); |
493 | if (r < 0) | |
494 | log_debug_errno(r, "Failed to parse broadcast address, ignoring: %m"); | |
495 | else | |
496 | lease->have_broadcast = true; | |
f5c0c00f TG |
497 | break; |
498 | ||
a6cc569e | 499 | case DHCP_OPTION_ROUTER: |
0339cd77 LP |
500 | if (len >= 4) { |
501 | r = lease_parse_be32(option, 4, &lease->router); | |
502 | if (r < 0) | |
503 | log_debug_errno(r, "Failed to parse router address, ignoring: %m"); | |
504 | } | |
a6cc569e TG |
505 | break; |
506 | ||
507 | case DHCP_OPTION_DOMAIN_NAME_SERVER: | |
0339cd77 LP |
508 | r = lease_parse_in_addrs(option, len, &lease->dns, &lease->dns_size); |
509 | if (r < 0) | |
510 | log_debug_errno(r, "Failed to parse DNS server, ignoring: %m"); | |
a6cc569e TG |
511 | break; |
512 | ||
0339cd77 LP |
513 | case DHCP_OPTION_NTP_SERVER: |
514 | r = lease_parse_in_addrs(option, len, &lease->ntp, &lease->ntp_size); | |
515 | if (r < 0) | |
516 | log_debug_errno(r, "Failed to parse NTP server, ignoring: %m"); | |
f5c0c00f TG |
517 | break; |
518 | ||
0339cd77 LP |
519 | case DHCP_OPTION_STATIC_ROUTE: |
520 | r = lease_parse_routes(option, len, &lease->static_route, &lease->static_route_size, &lease->static_route_allocated); | |
521 | if (r < 0) | |
522 | log_debug_errno(r, "Failed to parse static routes, ignoring: %m"); | |
f5c0c00f TG |
523 | break; |
524 | ||
0339cd77 LP |
525 | case DHCP_OPTION_INTERFACE_MTU: |
526 | r = lease_parse_u16(option, len, &lease->mtu, 68); | |
527 | if (r < 0) | |
528 | log_debug_errno(r, "Failed to parse MTU, ignoring: %m"); | |
f5c0c00f TG |
529 | break; |
530 | ||
90981625 LP |
531 | case DHCP_OPTION_DOMAIN_NAME: { |
532 | _cleanup_free_ char *domainname = NULL, *normalized = NULL; | |
784d9b9c TG |
533 | |
534 | r = lease_parse_string(option, len, &domainname); | |
0339cd77 LP |
535 | if (r < 0) { |
536 | log_debug_errno(r, "Failed to parse domain name, ignoring: %m"); | |
537 | return 0; | |
538 | } | |
a6cc569e | 539 | |
90981625 LP |
540 | r = dns_name_normalize(domainname, &normalized); |
541 | if (r < 0) { | |
542 | log_debug_errno(r, "Failed to normalize domain name '%s': %m", domainname); | |
543 | return 0; | |
544 | } | |
784d9b9c | 545 | |
90981625 | 546 | if (is_localhost(normalized)) { |
e37d2c94 | 547 | log_debug_errno(r, "Detected 'localhost' as suggested domain name, ignoring."); |
37de2509 NO |
548 | break; |
549 | } | |
550 | ||
784d9b9c | 551 | free(lease->domainname); |
90981625 LP |
552 | lease->domainname = normalized; |
553 | normalized = NULL; | |
a6cc569e | 554 | |
784d9b9c TG |
555 | break; |
556 | } | |
90981625 LP |
557 | |
558 | case DHCP_OPTION_HOST_NAME: { | |
559 | _cleanup_free_ char *hostname = NULL, *normalized = NULL; | |
784d9b9c TG |
560 | |
561 | r = lease_parse_string(option, len, &hostname); | |
0339cd77 LP |
562 | if (r < 0) { |
563 | log_debug_errno(r, "Failed to parse host name, ignoring: %m"); | |
564 | return 0; | |
565 | } | |
a6cc569e | 566 | |
90981625 LP |
567 | r = dns_name_normalize(hostname, &normalized); |
568 | if (r < 0) { | |
0339cd77 | 569 | log_debug_errno(r, "Failed to normalize host name '%s', ignoring: %m", hostname); |
90981625 LP |
570 | return 0; |
571 | } | |
f50f01f4 | 572 | |
90981625 | 573 | if (is_localhost(normalized)) { |
e37d2c94 | 574 | log_debug_errno(r, "Detected 'localhost' as suggested host name, ignoring."); |
90981625 LP |
575 | return 0; |
576 | } | |
784d9b9c | 577 | |
90981625 LP |
578 | free(lease->hostname); |
579 | lease->hostname = normalized; | |
580 | normalized = NULL; | |
a6cc569e | 581 | |
784d9b9c TG |
582 | break; |
583 | } | |
ce78df79 | 584 | |
2d03c0b8 | 585 | case DHCP_OPTION_ROOT_PATH: |
0339cd77 LP |
586 | r = lease_parse_string(option, len, &lease->root_path); |
587 | if (r < 0) | |
588 | log_debug_errno(r, "Failed to parse root path, ignoring: %m"); | |
589 | break; | |
ce78df79 | 590 | |
a6cc569e | 591 | case DHCP_OPTION_RENEWAL_T1_TIME: |
0339cd77 LP |
592 | r = lease_parse_u32(option, len, &lease->t1, 1); |
593 | if (r < 0) | |
594 | log_debug_errno(r, "Failed to parse T1 time, ignoring: %m"); | |
a6cc569e TG |
595 | break; |
596 | ||
597 | case DHCP_OPTION_REBINDING_T2_TIME: | |
0339cd77 LP |
598 | r = lease_parse_u32(option, len, &lease->t2, 1); |
599 | if (r < 0) | |
600 | log_debug_errno(r, "Failed to parse T2 time, ignoring: %m"); | |
a6cc569e | 601 | break; |
e1ea665e EY |
602 | |
603 | case DHCP_OPTION_CLASSLESS_STATIC_ROUTE: | |
0339cd77 | 604 | r = lease_parse_classless_routes( |
2d03c0b8 LP |
605 | option, len, |
606 | &lease->static_route, | |
607 | &lease->static_route_size, | |
608 | &lease->static_route_allocated); | |
0339cd77 LP |
609 | if (r < 0) |
610 | log_debug_errno(r, "Failed to parse classless routes, ignoring: %m"); | |
611 | break; | |
e43a8393 | 612 | |
8eb9058d LP |
613 | case DHCP_OPTION_NEW_TZDB_TIMEZONE: { |
614 | _cleanup_free_ char *tz = NULL; | |
615 | ||
616 | r = lease_parse_string(option, len, &tz); | |
0339cd77 LP |
617 | if (r < 0) { |
618 | log_debug_errno(r, "Failed to parse timezone option, ignoring: %m"); | |
619 | return 0; | |
620 | } | |
8eb9058d | 621 | |
0339cd77 LP |
622 | if (!timezone_is_valid(tz)) { |
623 | log_debug_errno(r, "Timezone is not valid, ignoring: %m"); | |
624 | return 0; | |
625 | } | |
8eb9058d LP |
626 | |
627 | free(lease->timezone); | |
628 | lease->timezone = tz; | |
629 | tz = NULL; | |
0339cd77 | 630 | |
8eb9058d LP |
631 | break; |
632 | } | |
633 | ||
e43a8393 | 634 | case DHCP_OPTION_VENDOR_SPECIFIC: |
2d03c0b8 | 635 | |
0339cd77 LP |
636 | if (len <= 0) |
637 | lease->vendor_specific = mfree(lease->vendor_specific); | |
638 | else { | |
639 | void *p; | |
640 | ||
641 | p = memdup(option, len); | |
642 | if (!p) | |
e43a8393 | 643 | return -ENOMEM; |
e43a8393 | 644 | |
0339cd77 LP |
645 | free(lease->vendor_specific); |
646 | lease->vendor_specific = p; | |
647 | } | |
7e753d9d | 648 | |
0339cd77 LP |
649 | lease->vendor_specific_len = len; |
650 | break; | |
7e753d9d | 651 | |
0339cd77 | 652 | case DHCP_OPTION_PRIVATE_BASE ... DHCP_OPTION_PRIVATE_LAST: |
7e753d9d AC |
653 | r = dhcp_lease_insert_private_option(lease, code, option, len); |
654 | if (r < 0) | |
655 | return r; | |
0339cd77 LP |
656 | |
657 | break; | |
658 | ||
659 | default: | |
660 | log_debug("Ignoring option DHCP option %i while parsing.", code); | |
661 | break; | |
a6cc569e TG |
662 | } |
663 | ||
664 | return 0; | |
665 | } | |
666 | ||
0339cd77 | 667 | int dhcp_lease_insert_private_option(sd_dhcp_lease *lease, uint8_t tag, const void *data, uint8_t len) { |
7e753d9d AC |
668 | struct sd_dhcp_raw_option *cur, *option; |
669 | ||
0339cd77 LP |
670 | assert(lease); |
671 | ||
7e753d9d AC |
672 | LIST_FOREACH(options, cur, lease->private_options) { |
673 | if (tag < cur->tag) | |
674 | break; | |
0339cd77 LP |
675 | if (tag == cur->tag) { |
676 | log_debug("Ignoring duplicate option, tagged %i.", tag); | |
7e753d9d AC |
677 | return 0; |
678 | } | |
679 | } | |
680 | ||
681 | option = new(struct sd_dhcp_raw_option, 1); | |
682 | if (!option) | |
683 | return -ENOMEM; | |
684 | ||
685 | option->tag = tag; | |
686 | option->length = len; | |
687 | option->data = memdup(data, len); | |
688 | if (!option->data) { | |
689 | free(option); | |
690 | return -ENOMEM; | |
691 | } | |
692 | ||
693 | LIST_INSERT_BEFORE(options, lease->private_options, cur, option); | |
7e753d9d AC |
694 | return 0; |
695 | } | |
696 | ||
a6cc569e | 697 | int dhcp_lease_new(sd_dhcp_lease **ret) { |
6e00a806 | 698 | sd_dhcp_lease *lease; |
a6cc569e TG |
699 | |
700 | lease = new0(sd_dhcp_lease, 1); | |
701 | if (!lease) | |
702 | return -ENOMEM; | |
703 | ||
8ddbeaa2 | 704 | lease->router = INADDR_ANY; |
3733eec3 | 705 | lease->n_ref = 1; |
a6cc569e TG |
706 | |
707 | *ret = lease; | |
a6cc569e TG |
708 | return 0; |
709 | } | |
fe8db0c5 | 710 | |
bd91b83e | 711 | int dhcp_lease_save(sd_dhcp_lease *lease, const char *lease_file) { |
fe8db0c5 TG |
712 | _cleanup_free_ char *temp_path = NULL; |
713 | _cleanup_fclose_ FILE *f = NULL; | |
a073309f | 714 | struct sd_dhcp_raw_option *option; |
fe8db0c5 | 715 | struct in_addr address; |
a2ba62c7 | 716 | const struct in_addr *addresses; |
e4735228 | 717 | const void *client_id, *data; |
e43a8393 | 718 | size_t client_id_len, data_len; |
fe8db0c5 TG |
719 | const char *string; |
720 | uint16_t mtu; | |
e1ea665e | 721 | struct sd_dhcp_route *routes; |
0339cd77 | 722 | uint32_t t1, t2, lifetime; |
fe8db0c5 TG |
723 | int r; |
724 | ||
725 | assert(lease); | |
726 | assert(lease_file); | |
727 | ||
fe8db0c5 TG |
728 | r = fopen_temporary(lease_file, &f, &temp_path); |
729 | if (r < 0) | |
dacd6cee | 730 | goto fail; |
fe8db0c5 TG |
731 | |
732 | fchmod(fileno(f), 0644); | |
733 | ||
fe8db0c5 | 734 | fprintf(f, |
0339cd77 | 735 | "# This is private data. Do not parse.\n"); |
fe8db0c5 | 736 | |
0339cd77 LP |
737 | r = sd_dhcp_lease_get_address(lease, &address); |
738 | if (r >= 0) | |
739 | fprintf(f, "ADDRESS=%s\n", inet_ntoa(address)); | |
fe8db0c5 | 740 | |
0339cd77 LP |
741 | r = sd_dhcp_lease_get_netmask(lease, &address); |
742 | if (r >= 0) | |
743 | fprintf(f, "NETMASK=%s\n", inet_ntoa(address)); | |
fe8db0c5 | 744 | |
8ddbeaa2 UTL |
745 | r = sd_dhcp_lease_get_router(lease, &address); |
746 | if (r >= 0) | |
747 | fprintf(f, "ROUTER=%s\n", inet_ntoa(address)); | |
748 | ||
0ad853bc | 749 | r = sd_dhcp_lease_get_server_identifier(lease, &address); |
109731eb | 750 | if (r >= 0) |
0339cd77 | 751 | fprintf(f, "SERVER_ADDRESS=%s\n", inet_ntoa(address)); |
0ad853bc | 752 | |
8e34a618 | 753 | r = sd_dhcp_lease_get_next_server(lease, &address); |
109731eb TG |
754 | if (r >= 0) |
755 | fprintf(f, "NEXT_SERVER=%s\n", inet_ntoa(address)); | |
8e34a618 | 756 | |
0339cd77 LP |
757 | r = sd_dhcp_lease_get_broadcast(lease, &address); |
758 | if (r >= 0) | |
759 | fprintf(f, "BROADCAST=%s\n", inet_ntoa(address)); | |
760 | ||
fe8db0c5 TG |
761 | r = sd_dhcp_lease_get_mtu(lease, &mtu); |
762 | if (r >= 0) | |
763 | fprintf(f, "MTU=%" PRIu16 "\n", mtu); | |
764 | ||
0339cd77 LP |
765 | r = sd_dhcp_lease_get_t1(lease, &t1); |
766 | if (r >= 0) | |
767 | fprintf(f, "T1=%" PRIu32 "\n", t1); | |
768 | ||
769 | r = sd_dhcp_lease_get_t2(lease, &t2); | |
109731eb | 770 | if (r >= 0) |
0339cd77 LP |
771 | fprintf(f, "T2=%" PRIu32 "\n", t2); |
772 | ||
773 | r = sd_dhcp_lease_get_lifetime(lease, &lifetime); | |
774 | if (r >= 0) | |
775 | fprintf(f, "LIFETIME=%" PRIu32 "\n", lifetime); | |
776 | ||
777 | r = sd_dhcp_lease_get_dns(lease, &addresses); | |
778 | if (r > 0) { | |
779 | fputs("DNS=", f); | |
b0e39c82 | 780 | serialize_in_addrs(f, addresses, r); |
0339cd77 LP |
781 | fputs("\n", f); |
782 | } | |
109731eb | 783 | |
a2ba62c7 | 784 | r = sd_dhcp_lease_get_ntp(lease, &addresses); |
0339cd77 LP |
785 | if (r > 0) { |
786 | fputs("NTP=", f); | |
b0e39c82 | 787 | serialize_in_addrs(f, addresses, r); |
0339cd77 LP |
788 | fputs("\n", f); |
789 | } | |
fe8db0c5 TG |
790 | |
791 | r = sd_dhcp_lease_get_domainname(lease, &string); | |
792 | if (r >= 0) | |
793 | fprintf(f, "DOMAINNAME=%s\n", string); | |
794 | ||
795 | r = sd_dhcp_lease_get_hostname(lease, &string); | |
796 | if (r >= 0) | |
797 | fprintf(f, "HOSTNAME=%s\n", string); | |
798 | ||
ce78df79 TG |
799 | r = sd_dhcp_lease_get_root_path(lease, &string); |
800 | if (r >= 0) | |
801 | fprintf(f, "ROOT_PATH=%s\n", string); | |
802 | ||
a2ba62c7 | 803 | r = sd_dhcp_lease_get_routes(lease, &routes); |
0339cd77 | 804 | if (r > 0) |
a2ba62c7 | 805 | serialize_dhcp_routes(f, "ROUTES", routes, r); |
e1ea665e | 806 | |
8eb9058d LP |
807 | r = sd_dhcp_lease_get_timezone(lease, &string); |
808 | if (r >= 0) | |
809 | fprintf(f, "TIMEZONE=%s\n", string); | |
810 | ||
e37f74a6 DW |
811 | r = sd_dhcp_lease_get_client_id(lease, &client_id, &client_id_len); |
812 | if (r >= 0) { | |
813 | _cleanup_free_ char *client_id_hex; | |
814 | ||
dde8bb32 | 815 | client_id_hex = hexmem(client_id, client_id_len); |
e37f74a6 DW |
816 | if (!client_id_hex) { |
817 | r = -ENOMEM; | |
dacd6cee | 818 | goto fail; |
e37f74a6 DW |
819 | } |
820 | fprintf(f, "CLIENTID=%s\n", client_id_hex); | |
821 | } | |
822 | ||
e43a8393 BG |
823 | r = sd_dhcp_lease_get_vendor_specific(lease, &data, &data_len); |
824 | if (r >= 0) { | |
825 | _cleanup_free_ char *option_hex = NULL; | |
826 | ||
827 | option_hex = hexmem(data, data_len); | |
828 | if (!option_hex) { | |
829 | r = -ENOMEM; | |
dacd6cee | 830 | goto fail; |
e43a8393 BG |
831 | } |
832 | fprintf(f, "VENDOR_SPECIFIC=%s\n", option_hex); | |
833 | } | |
834 | ||
a073309f | 835 | LIST_FOREACH(options, option, lease->private_options) { |
30afef87 | 836 | char key[strlen("OPTION_000")+1]; |
0339cd77 | 837 | |
a073309f AC |
838 | snprintf(key, sizeof(key), "OPTION_%"PRIu8, option->tag); |
839 | r = serialize_dhcp_option(f, key, option->data, option->length); | |
840 | if (r < 0) | |
841 | goto fail; | |
842 | } | |
843 | ||
dacd6cee LP |
844 | r = fflush_and_check(f); |
845 | if (r < 0) | |
846 | goto fail; | |
fe8db0c5 | 847 | |
dacd6cee | 848 | if (rename(temp_path, lease_file) < 0) { |
fe8db0c5 | 849 | r = -errno; |
dacd6cee | 850 | goto fail; |
fe8db0c5 TG |
851 | } |
852 | ||
dacd6cee LP |
853 | return 0; |
854 | ||
855 | fail: | |
856 | if (temp_path) | |
857 | (void) unlink(temp_path); | |
fe8db0c5 | 858 | |
dacd6cee | 859 | return log_error_errno(r, "Failed to save lease data %s: %m", lease_file); |
fe8db0c5 TG |
860 | } |
861 | ||
bd91b83e | 862 | int dhcp_lease_load(sd_dhcp_lease **ret, const char *lease_file) { |
0339cd77 | 863 | |
fe8db0c5 | 864 | _cleanup_dhcp_lease_unref_ sd_dhcp_lease *lease = NULL; |
0339cd77 LP |
865 | _cleanup_free_ char |
866 | *address = NULL, | |
867 | *router = NULL, | |
868 | *netmask = NULL, | |
869 | *server_address = NULL, | |
870 | *next_server = NULL, | |
871 | *broadcast = NULL, | |
872 | *dns = NULL, | |
873 | *ntp = NULL, | |
874 | *mtu = NULL, | |
875 | *routes = NULL, | |
876 | *client_id_hex = NULL, | |
877 | *vendor_specific_hex = NULL, | |
878 | *lifetime = NULL, | |
879 | *t1 = NULL, | |
880 | *t2 = NULL, | |
881 | *options[DHCP_OPTION_PRIVATE_LAST - DHCP_OPTION_PRIVATE_BASE + 1] = {}; | |
882 | ||
a073309f | 883 | int r, i; |
fe8db0c5 TG |
884 | |
885 | assert(lease_file); | |
886 | assert(ret); | |
887 | ||
888 | r = dhcp_lease_new(&lease); | |
889 | if (r < 0) | |
890 | return r; | |
891 | ||
892 | r = parse_env_file(lease_file, NEWLINE, | |
893 | "ADDRESS", &address, | |
894 | "ROUTER", &router, | |
895 | "NETMASK", &netmask, | |
0ad853bc | 896 | "SERVER_IDENTIFIER", &server_address, |
8e34a618 | 897 | "NEXT_SERVER", &next_server, |
0339cd77 | 898 | "BROADCAST", &broadcast, |
109731eb TG |
899 | "DNS", &dns, |
900 | "NTP", &ntp, | |
fe8db0c5 TG |
901 | "MTU", &mtu, |
902 | "DOMAINNAME", &lease->domainname, | |
903 | "HOSTNAME", &lease->hostname, | |
ce78df79 | 904 | "ROOT_PATH", &lease->root_path, |
e1ea665e | 905 | "ROUTES", &routes, |
e37f74a6 | 906 | "CLIENTID", &client_id_hex, |
8eb9058d | 907 | "TIMEZONE", &lease->timezone, |
e43a8393 | 908 | "VENDOR_SPECIFIC", &vendor_specific_hex, |
0339cd77 LP |
909 | "LIFETIME", &lifetime, |
910 | "T1", &t1, | |
911 | "T2", &t2, | |
a073309f AC |
912 | "OPTION_224", &options[0], |
913 | "OPTION_225", &options[1], | |
914 | "OPTION_226", &options[2], | |
915 | "OPTION_227", &options[3], | |
916 | "OPTION_228", &options[4], | |
917 | "OPTION_229", &options[5], | |
918 | "OPTION_230", &options[6], | |
919 | "OPTION_231", &options[7], | |
920 | "OPTION_232", &options[8], | |
921 | "OPTION_233", &options[9], | |
922 | "OPTION_234", &options[10], | |
923 | "OPTION_235", &options[11], | |
924 | "OPTION_236", &options[12], | |
925 | "OPTION_237", &options[13], | |
926 | "OPTION_238", &options[14], | |
927 | "OPTION_239", &options[15], | |
928 | "OPTION_240", &options[16], | |
929 | "OPTION_241", &options[17], | |
930 | "OPTION_242", &options[18], | |
931 | "OPTION_243", &options[19], | |
932 | "OPTION_244", &options[20], | |
933 | "OPTION_245", &options[21], | |
934 | "OPTION_246", &options[22], | |
935 | "OPTION_247", &options[23], | |
936 | "OPTION_248", &options[24], | |
937 | "OPTION_249", &options[25], | |
938 | "OPTION_250", &options[26], | |
939 | "OPTION_251", &options[27], | |
940 | "OPTION_252", &options[28], | |
941 | "OPTION_253", &options[29], | |
942 | "OPTION_254", &options[30], | |
fe8db0c5 | 943 | NULL); |
fe8db0c5 TG |
944 | if (r < 0) |
945 | return r; | |
946 | ||
0339cd77 LP |
947 | if (address) { |
948 | r = inet_pton(AF_INET, address, &lease->address); | |
949 | if (r <= 0) | |
950 | log_debug_errno(errno, "Failed to parse address %s, ignoring: %m", address); | |
951 | } | |
fe8db0c5 | 952 | |
8ddbeaa2 | 953 | if (router) { |
0339cd77 LP |
954 | r = inet_pton(AF_INET, router, &lease->router); |
955 | if (r <= 0) | |
956 | log_debug_errno(errno, "Failed to parse router %s, ignoring: %m", router); | |
8ddbeaa2 | 957 | } |
fe8db0c5 | 958 | |
0339cd77 LP |
959 | if (netmask) { |
960 | r = inet_pton(AF_INET, netmask, &lease->subnet_mask); | |
961 | if (r <= 0) | |
962 | log_debug_errno(errno, "Failed to parse netmask %s, ignoring: %m", netmask); | |
963 | else | |
964 | lease->have_subnet_mask = true; | |
965 | } | |
fe8db0c5 | 966 | |
0ad853bc | 967 | if (server_address) { |
0339cd77 LP |
968 | r = inet_pton(AF_INET, server_address, &lease->server_address); |
969 | if (r <= 0) | |
970 | log_debug_errno(errno, "Failed to parse netmask %s, ignoring: %m", server_address); | |
0ad853bc TG |
971 | } |
972 | ||
8e34a618 | 973 | if (next_server) { |
0339cd77 LP |
974 | r = inet_pton(AF_INET, next_server, &lease->next_server); |
975 | if (r <= 0) | |
976 | log_debug_errno(errno, "Failed to parse next server %s, ignoring: %m", next_server); | |
977 | } | |
8e34a618 | 978 | |
0339cd77 LP |
979 | if (broadcast) { |
980 | r = inet_pton(AF_INET, broadcast, &lease->broadcast); | |
981 | if (r <= 0) | |
982 | log_debug_errno(errno, "Failed to parse broadcast address %s, ignoring: %m", broadcast); | |
983 | else | |
984 | lease->have_broadcast = true; | |
8e34a618 TG |
985 | } |
986 | ||
109731eb | 987 | if (dns) { |
a2ba62c7 | 988 | r = deserialize_in_addrs(&lease->dns, dns); |
109731eb | 989 | if (r < 0) |
0339cd77 LP |
990 | log_debug_errno(r, "Failed to deserialize DNS servers %s, ignoring: %m", dns); |
991 | else | |
992 | lease->dns_size = r; | |
109731eb TG |
993 | } |
994 | ||
995 | if (ntp) { | |
a2ba62c7 | 996 | r = deserialize_in_addrs(&lease->ntp, ntp); |
109731eb | 997 | if (r < 0) |
0339cd77 LP |
998 | log_debug_errno(r, "Failed to deserialize NTP servers %s, ignoring: %m", ntp); |
999 | else | |
1000 | lease->ntp_size = r; | |
109731eb TG |
1001 | } |
1002 | ||
fe8db0c5 | 1003 | if (mtu) { |
0339cd77 LP |
1004 | r = safe_atou16(mtu, &lease->mtu); |
1005 | if (r < 0) | |
1006 | log_debug_errno(r, "Failed to parse MTU %s, ignoring: %m", mtu); | |
fe8db0c5 TG |
1007 | } |
1008 | ||
e1ea665e | 1009 | if (routes) { |
0339cd77 LP |
1010 | r = deserialize_dhcp_routes( |
1011 | &lease->static_route, | |
1012 | &lease->static_route_size, | |
1013 | &lease->static_route_allocated, | |
1014 | routes); | |
1015 | if (r < 0) | |
1016 | log_debug_errno(r, "Failed to parse DHCP routes %s, ignoring: %m", routes); | |
1017 | } | |
1018 | ||
1019 | if (lifetime) { | |
1020 | r = safe_atou32(lifetime, &lease->lifetime); | |
1021 | if (r < 0) | |
1022 | log_debug_errno(r, "Failed to parse lifetime %s, ignoring: %m", lifetime); | |
1023 | } | |
1024 | ||
1025 | if (t1) { | |
1026 | r = safe_atou32(t1, &lease->t1); | |
1027 | if (r < 0) | |
1028 | log_debug_errno(r, "Failed to parse T1 %s, ignoring: %m", t1); | |
1029 | } | |
1030 | ||
1031 | if (t2) { | |
1032 | r = safe_atou32(t2, &lease->t2); | |
e1ea665e | 1033 | if (r < 0) |
0339cd77 | 1034 | log_debug_errno(r, "Failed to parse T2 %s, ignoring: %m", t2); |
e1ea665e EY |
1035 | } |
1036 | ||
e37f74a6 | 1037 | if (client_id_hex) { |
9b57d9ae | 1038 | r = deserialize_dhcp_option(&lease->client_id, &lease->client_id_len, client_id_hex); |
30494563 | 1039 | if (r < 0) |
0339cd77 | 1040 | log_debug_errno(r, "Failed to parse client ID %s, ignoring: %m", client_id_hex); |
e37f74a6 DW |
1041 | } |
1042 | ||
e43a8393 | 1043 | if (vendor_specific_hex) { |
9b57d9ae | 1044 | r = deserialize_dhcp_option(&lease->vendor_specific, &lease->vendor_specific_len, vendor_specific_hex); |
e43a8393 | 1045 | if (r < 0) |
0339cd77 | 1046 | log_debug_errno(r, "Failed to parse vendor specific data %s, ignoring: %m", vendor_specific_hex); |
e43a8393 BG |
1047 | } |
1048 | ||
a073309f | 1049 | for (i = 0; i <= DHCP_OPTION_PRIVATE_LAST - DHCP_OPTION_PRIVATE_BASE; i++) { |
e4735228 | 1050 | _cleanup_free_ void *data = NULL; |
a073309f AC |
1051 | size_t len; |
1052 | ||
1053 | if (!options[i]) | |
1054 | continue; | |
1055 | ||
1056 | r = deserialize_dhcp_option(&data, &len, options[i]); | |
0339cd77 LP |
1057 | if (r < 0) { |
1058 | log_debug_errno(r, "Failed to parse private DHCP option %s, ignoring: %m", options[i]); | |
1059 | continue; | |
1060 | } | |
a073309f AC |
1061 | |
1062 | r = dhcp_lease_insert_private_option(lease, DHCP_OPTION_PRIVATE_BASE + i, data, len); | |
626be147 | 1063 | if (r < 0) |
a073309f AC |
1064 | return r; |
1065 | } | |
1066 | ||
fe8db0c5 TG |
1067 | *ret = lease; |
1068 | lease = NULL; | |
1069 | ||
1070 | return 0; | |
1071 | } | |
9e64dd72 TG |
1072 | |
1073 | int dhcp_lease_set_default_subnet_mask(sd_dhcp_lease *lease) { | |
0339cd77 | 1074 | struct in_addr address, mask; |
df40eee8 | 1075 | int r; |
9e64dd72 TG |
1076 | |
1077 | assert(lease); | |
9e64dd72 | 1078 | |
0339cd77 LP |
1079 | if (lease->address == 0) |
1080 | return -ENODATA; | |
1081 | ||
df40eee8 | 1082 | address.s_addr = lease->address; |
9e64dd72 TG |
1083 | |
1084 | /* fall back to the default subnet masks based on address class */ | |
df40eee8 TG |
1085 | r = in_addr_default_subnet_mask(&address, &mask); |
1086 | if (r < 0) | |
1087 | return r; | |
9e64dd72 | 1088 | |
df40eee8 | 1089 | lease->subnet_mask = mask.s_addr; |
0339cd77 | 1090 | lease->have_subnet_mask = true; |
9e64dd72 TG |
1091 | |
1092 | return 0; | |
1093 | } | |
e37f74a6 | 1094 | |
0339cd77 | 1095 | int sd_dhcp_lease_get_client_id(sd_dhcp_lease *lease, const void **client_id, size_t *client_id_len) { |
e37f74a6 DW |
1096 | assert_return(lease, -EINVAL); |
1097 | assert_return(client_id, -EINVAL); | |
1098 | assert_return(client_id_len, -EINVAL); | |
1099 | ||
0339cd77 LP |
1100 | if (!lease->client_id) |
1101 | return -ENODATA; | |
1102 | ||
e37f74a6 DW |
1103 | *client_id = lease->client_id; |
1104 | *client_id_len = lease->client_id_len; | |
0339cd77 | 1105 | |
e37f74a6 DW |
1106 | return 0; |
1107 | } | |
1108 | ||
0339cd77 | 1109 | int dhcp_lease_set_client_id(sd_dhcp_lease *lease, const void *client_id, size_t client_id_len) { |
e37f74a6 | 1110 | assert_return(lease, -EINVAL); |
0339cd77 LP |
1111 | assert_return(client_id || client_id_len <= 0, -EINVAL); |
1112 | ||
1113 | if (client_id_len <= 0) | |
1114 | lease->client_id = mfree(lease->client_id); | |
1115 | else { | |
1116 | void *p; | |
e37f74a6 | 1117 | |
0339cd77 LP |
1118 | p = memdup(client_id, client_id_len); |
1119 | if (!p) | |
1120 | return -ENOMEM; | |
e37f74a6 | 1121 | |
0339cd77 LP |
1122 | free(lease->client_id); |
1123 | lease->client_id = p; | |
e37f74a6 DW |
1124 | lease->client_id_len = client_id_len; |
1125 | } | |
1126 | ||
1127 | return 0; | |
1128 | } | |
8eb9058d | 1129 | |
64d6c229 | 1130 | int sd_dhcp_lease_get_timezone(sd_dhcp_lease *lease, const char **tz) { |
8eb9058d | 1131 | assert_return(lease, -EINVAL); |
64d6c229 | 1132 | assert_return(tz, -EINVAL); |
8eb9058d LP |
1133 | |
1134 | if (!lease->timezone) | |
0339cd77 | 1135 | return -ENODATA; |
8eb9058d | 1136 | |
64d6c229 | 1137 | *tz = lease->timezone; |
8eb9058d LP |
1138 | return 0; |
1139 | } |