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Commit | Line | Data |
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a6cc569e TG |
1 | /*** |
2 | This file is part of systemd. | |
3 | ||
4 | Copyright (C) 2013 Intel Corporation. All rights reserved. | |
5 | Copyright (C) 2014 Tom Gundersen | |
6 | ||
7 | systemd is free software; you can redistribute it and/or modify it | |
8 | under the terms of the GNU Lesser General Public License as published by | |
9 | the Free Software Foundation; either version 2.1 of the License, or | |
10 | (at your option) any later version. | |
11 | ||
12 | systemd is distributed in the hope that it will be useful, but | |
13 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
15 | Lesser General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU Lesser General Public License | |
18 | along with systemd; If not, see <http://www.gnu.org/licenses/>. | |
19 | ***/ | |
20 | ||
07630cea | 21 | #include <arpa/inet.h> |
a6cc569e | 22 | #include <errno.h> |
a6cc569e | 23 | #include <stdio.h> |
07630cea LP |
24 | #include <stdlib.h> |
25 | #include <string.h> | |
26 | ||
27 | #include "sd-dhcp-lease.h" | |
a6cc569e | 28 | |
b5efdb8a | 29 | #include "alloc-util.h" |
07630cea LP |
30 | #include "dhcp-lease-internal.h" |
31 | #include "dhcp-protocol.h" | |
32 | #include "dns-domain.h" | |
3ffd4af2 | 33 | #include "fd-util.h" |
fe8db0c5 | 34 | #include "fileio.h" |
958b66ea | 35 | #include "hostname-util.h" |
07630cea | 36 | #include "in-addr-util.h" |
0339cd77 | 37 | #include "network-internal.h" |
e4e73a63 | 38 | #include "hexdecoct.h" |
6bedfcbb | 39 | #include "parse-util.h" |
07630cea | 40 | #include "unaligned.h" |
a6cc569e TG |
41 | |
42 | int sd_dhcp_lease_get_address(sd_dhcp_lease *lease, struct in_addr *addr) { | |
43 | assert_return(lease, -EINVAL); | |
44 | assert_return(addr, -EINVAL); | |
45 | ||
0339cd77 LP |
46 | if (lease->address == 0) |
47 | return -ENODATA; | |
48 | ||
a6cc569e | 49 | addr->s_addr = lease->address; |
0339cd77 LP |
50 | return 0; |
51 | } | |
a6cc569e | 52 | |
0339cd77 LP |
53 | int sd_dhcp_lease_get_broadcast(sd_dhcp_lease *lease, struct in_addr *addr) { |
54 | assert_return(lease, -EINVAL); | |
55 | assert_return(addr, -EINVAL); | |
56 | ||
57 | if (!lease->have_broadcast) | |
58 | return -ENODATA; | |
59 | ||
60 | addr->s_addr = lease->broadcast; | |
a6cc569e TG |
61 | return 0; |
62 | } | |
63 | ||
68ceb9df PF |
64 | int sd_dhcp_lease_get_lifetime(sd_dhcp_lease *lease, uint32_t *lifetime) { |
65 | assert_return(lease, -EINVAL); | |
1c6eb4e3 | 66 | assert_return(lifetime, -EINVAL); |
68ceb9df | 67 | |
0339cd77 LP |
68 | if (lease->lifetime <= 0) |
69 | return -ENODATA; | |
70 | ||
68ceb9df | 71 | *lifetime = lease->lifetime; |
0339cd77 LP |
72 | return 0; |
73 | } | |
68ceb9df | 74 | |
0339cd77 LP |
75 | int sd_dhcp_lease_get_t1(sd_dhcp_lease *lease, uint32_t *t1) { |
76 | assert_return(lease, -EINVAL); | |
77 | assert_return(t1, -EINVAL); | |
78 | ||
79 | if (lease->t1 <= 0) | |
80 | return -ENODATA; | |
81 | ||
82 | *t1 = lease->t1; | |
83 | return 0; | |
84 | } | |
85 | ||
86 | int sd_dhcp_lease_get_t2(sd_dhcp_lease *lease, uint32_t *t2) { | |
87 | assert_return(lease, -EINVAL); | |
88 | assert_return(t2, -EINVAL); | |
89 | ||
90 | if (lease->t2 <= 0) | |
91 | return -ENODATA; | |
92 | ||
93 | *t2 = lease->t2; | |
68ceb9df PF |
94 | return 0; |
95 | } | |
96 | ||
a6cc569e TG |
97 | int sd_dhcp_lease_get_mtu(sd_dhcp_lease *lease, uint16_t *mtu) { |
98 | assert_return(lease, -EINVAL); | |
99 | assert_return(mtu, -EINVAL); | |
100 | ||
0339cd77 LP |
101 | if (lease->mtu <= 0) |
102 | return -ENODATA; | |
a6cc569e | 103 | |
0339cd77 | 104 | *mtu = lease->mtu; |
a6cc569e TG |
105 | return 0; |
106 | } | |
107 | ||
a2ba62c7 | 108 | int sd_dhcp_lease_get_dns(sd_dhcp_lease *lease, const struct in_addr **addr) { |
a6cc569e TG |
109 | assert_return(lease, -EINVAL); |
110 | assert_return(addr, -EINVAL); | |
a6cc569e | 111 | |
0339cd77 LP |
112 | if (lease->dns_size <= 0) |
113 | return -ENODATA; | |
a6cc569e | 114 | |
0339cd77 LP |
115 | *addr = lease->dns; |
116 | return (int) lease->dns_size; | |
a6cc569e TG |
117 | } |
118 | ||
a2ba62c7 | 119 | int sd_dhcp_lease_get_ntp(sd_dhcp_lease *lease, const struct in_addr **addr) { |
46844696 TG |
120 | assert_return(lease, -EINVAL); |
121 | assert_return(addr, -EINVAL); | |
46844696 | 122 | |
0339cd77 LP |
123 | if (lease->ntp_size <= 0) |
124 | return -ENODATA; | |
46844696 | 125 | |
0339cd77 LP |
126 | *addr = lease->ntp; |
127 | return (int) lease->ntp_size; | |
46844696 TG |
128 | } |
129 | ||
a6cc569e TG |
130 | int sd_dhcp_lease_get_domainname(sd_dhcp_lease *lease, const char **domainname) { |
131 | assert_return(lease, -EINVAL); | |
132 | assert_return(domainname, -EINVAL); | |
133 | ||
0339cd77 LP |
134 | if (!lease->domainname) |
135 | return -ENODATA; | |
a6cc569e | 136 | |
0339cd77 | 137 | *domainname = lease->domainname; |
a6cc569e TG |
138 | return 0; |
139 | } | |
140 | ||
141 | int sd_dhcp_lease_get_hostname(sd_dhcp_lease *lease, const char **hostname) { | |
142 | assert_return(lease, -EINVAL); | |
143 | assert_return(hostname, -EINVAL); | |
144 | ||
0339cd77 LP |
145 | if (!lease->hostname) |
146 | return -ENODATA; | |
a6cc569e | 147 | |
0339cd77 | 148 | *hostname = lease->hostname; |
a6cc569e TG |
149 | return 0; |
150 | } | |
151 | ||
ce78df79 TG |
152 | int sd_dhcp_lease_get_root_path(sd_dhcp_lease *lease, const char **root_path) { |
153 | assert_return(lease, -EINVAL); | |
154 | assert_return(root_path, -EINVAL); | |
155 | ||
0339cd77 LP |
156 | if (!lease->root_path) |
157 | return -ENODATA; | |
ce78df79 | 158 | |
0339cd77 | 159 | *root_path = lease->root_path; |
ce78df79 TG |
160 | return 0; |
161 | } | |
162 | ||
a6cc569e TG |
163 | int sd_dhcp_lease_get_router(sd_dhcp_lease *lease, struct in_addr *addr) { |
164 | assert_return(lease, -EINVAL); | |
165 | assert_return(addr, -EINVAL); | |
166 | ||
0339cd77 LP |
167 | if (lease->router == 0) |
168 | return -ENODATA; | |
a6cc569e | 169 | |
0339cd77 | 170 | addr->s_addr = lease->router; |
a6cc569e TG |
171 | return 0; |
172 | } | |
173 | ||
174 | int sd_dhcp_lease_get_netmask(sd_dhcp_lease *lease, struct in_addr *addr) { | |
175 | assert_return(lease, -EINVAL); | |
176 | assert_return(addr, -EINVAL); | |
177 | ||
0339cd77 LP |
178 | if (!lease->have_subnet_mask) |
179 | return -ENODATA; | |
a6cc569e | 180 | |
0339cd77 | 181 | addr->s_addr = lease->subnet_mask; |
a6cc569e TG |
182 | return 0; |
183 | } | |
184 | ||
0ad853bc TG |
185 | int sd_dhcp_lease_get_server_identifier(sd_dhcp_lease *lease, struct in_addr *addr) { |
186 | assert_return(lease, -EINVAL); | |
187 | assert_return(addr, -EINVAL); | |
188 | ||
0339cd77 LP |
189 | if (lease->server_address == 0) |
190 | return -ENODATA; | |
0ad853bc | 191 | |
0339cd77 | 192 | addr->s_addr = lease->server_address; |
0ad853bc TG |
193 | return 0; |
194 | } | |
195 | ||
8e34a618 TG |
196 | int sd_dhcp_lease_get_next_server(sd_dhcp_lease *lease, struct in_addr *addr) { |
197 | assert_return(lease, -EINVAL); | |
198 | assert_return(addr, -EINVAL); | |
199 | ||
0339cd77 LP |
200 | if (lease->next_server == 0) |
201 | return -ENODATA; | |
8e34a618 | 202 | |
0339cd77 | 203 | addr->s_addr = lease->next_server; |
8e34a618 TG |
204 | return 0; |
205 | } | |
206 | ||
a2ba62c7 | 207 | int sd_dhcp_lease_get_routes(sd_dhcp_lease *lease, struct sd_dhcp_route **routes) { |
e1ea665e EY |
208 | assert_return(lease, -EINVAL); |
209 | assert_return(routes, -EINVAL); | |
e1ea665e | 210 | |
0339cd77 LP |
211 | if (lease->static_route_size <= 0) |
212 | return -ENODATA; | |
e1ea665e | 213 | |
0339cd77 LP |
214 | *routes = lease->static_route; |
215 | return (int) lease->static_route_size; | |
e1ea665e EY |
216 | } |
217 | ||
0339cd77 | 218 | int sd_dhcp_lease_get_vendor_specific(sd_dhcp_lease *lease, const void **data, size_t *data_len) { |
e43a8393 BG |
219 | assert_return(lease, -EINVAL); |
220 | assert_return(data, -EINVAL); | |
221 | assert_return(data_len, -EINVAL); | |
222 | ||
0339cd77 LP |
223 | if (lease->vendor_specific_len <= 0) |
224 | return -ENODATA; | |
e43a8393 BG |
225 | |
226 | *data = lease->vendor_specific; | |
227 | *data_len = lease->vendor_specific_len; | |
e43a8393 BG |
228 | return 0; |
229 | } | |
230 | ||
a6cc569e | 231 | sd_dhcp_lease *sd_dhcp_lease_ref(sd_dhcp_lease *lease) { |
3733eec3 LP |
232 | |
233 | if (!lease) | |
234 | return NULL; | |
235 | ||
236 | assert(lease->n_ref >= 1); | |
237 | lease->n_ref++; | |
a6cc569e TG |
238 | |
239 | return lease; | |
240 | } | |
241 | ||
242 | sd_dhcp_lease *sd_dhcp_lease_unref(sd_dhcp_lease *lease) { | |
7e753d9d | 243 | |
3733eec3 LP |
244 | if (!lease) |
245 | return NULL; | |
7e753d9d | 246 | |
3733eec3 LP |
247 | assert(lease->n_ref >= 1); |
248 | lease->n_ref--; | |
249 | ||
250 | if (lease->n_ref > 0) | |
251 | return NULL; | |
252 | ||
253 | while (lease->private_options) { | |
254 | struct sd_dhcp_raw_option *option = lease->private_options; | |
255 | ||
256 | LIST_REMOVE(options, lease->private_options, option); | |
257 | ||
258 | free(option->data); | |
259 | free(option); | |
a6cc569e TG |
260 | } |
261 | ||
3733eec3 LP |
262 | free(lease->hostname); |
263 | free(lease->domainname); | |
264 | free(lease->dns); | |
265 | free(lease->ntp); | |
266 | free(lease->static_route); | |
267 | free(lease->client_id); | |
268 | free(lease->vendor_specific); | |
269 | free(lease); | |
270 | ||
a6cc569e TG |
271 | return NULL; |
272 | } | |
273 | ||
0339cd77 | 274 | static int lease_parse_u32(const uint8_t *option, size_t len, uint32_t *ret, uint32_t min) { |
e140ae58 TG |
275 | assert(option); |
276 | assert(ret); | |
277 | ||
0339cd77 LP |
278 | if (len != 4) |
279 | return -EINVAL; | |
e140ae58 | 280 | |
0339cd77 LP |
281 | *ret = unaligned_read_be32((be32_t*) option); |
282 | if (*ret < min) | |
283 | *ret = min; | |
e140ae58 | 284 | |
0339cd77 | 285 | return 0; |
e140ae58 TG |
286 | } |
287 | ||
0339cd77 | 288 | static int lease_parse_u16(const uint8_t *option, size_t len, uint16_t *ret, uint16_t min) { |
e140ae58 TG |
289 | assert(option); |
290 | assert(ret); | |
291 | ||
0339cd77 LP |
292 | if (len != 2) |
293 | return -EINVAL; | |
e140ae58 | 294 | |
0339cd77 LP |
295 | *ret = unaligned_read_be16((be16_t*) option); |
296 | if (*ret < min) | |
297 | *ret = min; | |
f5c0c00f | 298 | |
0339cd77 | 299 | return 0; |
f5c0c00f TG |
300 | } |
301 | ||
0339cd77 | 302 | static int lease_parse_be32(const uint8_t *option, size_t len, be32_t *ret) { |
f5c0c00f TG |
303 | assert(option); |
304 | assert(ret); | |
305 | ||
0339cd77 LP |
306 | if (len != 4) |
307 | return -EINVAL; | |
f5c0c00f | 308 | |
0339cd77 LP |
309 | memcpy(ret, option, 4); |
310 | return 0; | |
f5c0c00f TG |
311 | } |
312 | ||
e140ae58 TG |
313 | static int lease_parse_string(const uint8_t *option, size_t len, char **ret) { |
314 | assert(option); | |
315 | assert(ret); | |
316 | ||
0339cd77 LP |
317 | if (len <= 0) |
318 | *ret = mfree(*ret); | |
319 | else { | |
e140ae58 TG |
320 | char *string; |
321 | ||
e989fd9b LP |
322 | /* |
323 | * One trailing NUL byte is OK, we don't mind. See: | |
324 | * https://github.com/systemd/systemd/issues/1337 | |
325 | */ | |
326 | if (memchr(option, 0, len - 1)) | |
43f447b1 LP |
327 | return -EINVAL; |
328 | ||
e989fd9b | 329 | string = strndup((const char *) option, len); |
e140ae58 | 330 | if (!string) |
43f447b1 | 331 | return -ENOMEM; |
e140ae58 TG |
332 | |
333 | free(*ret); | |
334 | *ret = string; | |
0339cd77 | 335 | } |
e140ae58 TG |
336 | |
337 | return 0; | |
338 | } | |
339 | ||
0339cd77 | 340 | static int lease_parse_in_addrs(const uint8_t *option, size_t len, struct in_addr **ret, size_t *n_ret) { |
e140ae58 TG |
341 | assert(option); |
342 | assert(ret); | |
0339cd77 | 343 | assert(n_ret); |
e140ae58 | 344 | |
0339cd77 LP |
345 | if (len <= 0) { |
346 | *ret = mfree(*ret); | |
347 | *n_ret = 0; | |
348 | } else { | |
349 | size_t n_addresses; | |
e140ae58 TG |
350 | struct in_addr *addresses; |
351 | ||
0339cd77 LP |
352 | if (len % 4 != 0) |
353 | return -EINVAL; | |
e140ae58 | 354 | |
0339cd77 LP |
355 | n_addresses = len / 4; |
356 | ||
357 | addresses = newdup(struct in_addr, option, n_addresses); | |
e140ae58 TG |
358 | if (!addresses) |
359 | return -ENOMEM; | |
360 | ||
361 | free(*ret); | |
362 | *ret = addresses; | |
0339cd77 | 363 | *n_ret = n_addresses; |
e140ae58 TG |
364 | } |
365 | ||
366 | return 0; | |
367 | } | |
368 | ||
0339cd77 LP |
369 | static int lease_parse_routes( |
370 | const uint8_t *option, size_t len, | |
371 | struct sd_dhcp_route **routes, size_t *routes_size, size_t *routes_allocated) { | |
e1ea665e EY |
372 | |
373 | struct in_addr addr; | |
374 | ||
0339cd77 | 375 | assert(option || len <= 0); |
e1ea665e EY |
376 | assert(routes); |
377 | assert(routes_size); | |
378 | assert(routes_allocated); | |
379 | ||
0339cd77 | 380 | if (len <= 0) |
e1ea665e EY |
381 | return 0; |
382 | ||
383 | if (len % 8 != 0) | |
384 | return -EINVAL; | |
385 | ||
386 | if (!GREEDY_REALLOC(*routes, *routes_allocated, *routes_size + (len / 8))) | |
387 | return -ENOMEM; | |
388 | ||
389 | while (len >= 8) { | |
390 | struct sd_dhcp_route *route = *routes + *routes_size; | |
1caa12d0 | 391 | int r; |
e1ea665e | 392 | |
1caa12d0 TG |
393 | r = in_addr_default_prefixlen((struct in_addr*) option, &route->dst_prefixlen); |
394 | if (r < 0) { | |
0339cd77 | 395 | log_debug("Failed to determine destination prefix length from class based IP, ignoring"); |
e1ea665e EY |
396 | continue; |
397 | } | |
398 | ||
0339cd77 | 399 | assert_se(lease_parse_be32(option, 4, &addr.s_addr) >= 0); |
e1ea665e EY |
400 | route->dst_addr = inet_makeaddr(inet_netof(addr), 0); |
401 | option += 4; | |
402 | ||
0339cd77 | 403 | assert_se(lease_parse_be32(option, 4, &route->gw_addr.s_addr) >= 0); |
e1ea665e EY |
404 | option += 4; |
405 | ||
406 | len -= 8; | |
407 | (*routes_size)++; | |
408 | } | |
409 | ||
410 | return 0; | |
411 | } | |
412 | ||
413 | /* parses RFC3442 Classless Static Route Option */ | |
0339cd77 LP |
414 | static int lease_parse_classless_routes( |
415 | const uint8_t *option, size_t len, | |
416 | struct sd_dhcp_route **routes, size_t *routes_size, size_t *routes_allocated) { | |
e1ea665e | 417 | |
0339cd77 | 418 | assert(option || len <= 0); |
e1ea665e EY |
419 | assert(routes); |
420 | assert(routes_size); | |
421 | assert(routes_allocated); | |
422 | ||
0339cd77 LP |
423 | if (len <= 0) |
424 | return 0; | |
425 | ||
e1ea665e EY |
426 | /* option format: (subnet-mask-width significant-subnet-octets gateway-ip)* */ |
427 | ||
428 | while (len > 0) { | |
429 | uint8_t dst_octets; | |
430 | struct sd_dhcp_route *route; | |
431 | ||
432 | if (!GREEDY_REALLOC(*routes, *routes_allocated, *routes_size + 1)) | |
0339cd77 | 433 | return -ENOMEM; |
e1ea665e EY |
434 | |
435 | route = *routes + *routes_size; | |
436 | ||
437 | dst_octets = (*option == 0 ? 0 : ((*option - 1) / 8) + 1); | |
438 | route->dst_prefixlen = *option; | |
439 | option++; | |
440 | len--; | |
441 | ||
442 | /* can't have more than 4 octets in IPv4 */ | |
443 | if (dst_octets > 4 || len < dst_octets) | |
444 | return -EINVAL; | |
445 | ||
446 | route->dst_addr.s_addr = 0; | |
447 | memcpy(&route->dst_addr.s_addr, option, dst_octets); | |
448 | option += dst_octets; | |
449 | len -= dst_octets; | |
450 | ||
451 | if (len < 4) | |
452 | return -EINVAL; | |
453 | ||
454 | lease_parse_be32(option, 4, &route->gw_addr.s_addr); | |
455 | option += 4; | |
456 | len -= 4; | |
457 | ||
458 | (*routes_size)++; | |
459 | } | |
460 | ||
461 | return 0; | |
462 | } | |
463 | ||
e4735228 | 464 | int dhcp_lease_parse_options(uint8_t code, uint8_t len, const void *option, void *userdata) { |
2d03c0b8 | 465 | sd_dhcp_lease *lease = userdata; |
e140ae58 TG |
466 | int r; |
467 | ||
468 | assert(lease); | |
a6cc569e TG |
469 | |
470 | switch(code) { | |
471 | ||
472 | case DHCP_OPTION_IP_ADDRESS_LEASE_TIME: | |
0339cd77 LP |
473 | r = lease_parse_u32(option, len, &lease->lifetime, 1); |
474 | if (r < 0) | |
475 | log_debug_errno(r, "Failed to parse lease time, ignoring: %m"); | |
476 | ||
a6cc569e TG |
477 | break; |
478 | ||
479 | case DHCP_OPTION_SERVER_IDENTIFIER: | |
0339cd77 LP |
480 | r = lease_parse_be32(option, len, &lease->server_address); |
481 | if (r < 0) | |
482 | log_debug_errno(r, "Failed to parse server identifier, ignoring: %m"); | |
483 | ||
a6cc569e TG |
484 | break; |
485 | ||
486 | case DHCP_OPTION_SUBNET_MASK: | |
0339cd77 LP |
487 | r = lease_parse_be32(option, len, &lease->subnet_mask); |
488 | if (r < 0) | |
489 | log_debug_errno(r, "Failed to parse subnet mask, ignoring: %m"); | |
490 | else | |
491 | lease->have_subnet_mask = true; | |
a6cc569e TG |
492 | break; |
493 | ||
f5c0c00f | 494 | case DHCP_OPTION_BROADCAST: |
0339cd77 LP |
495 | r = lease_parse_be32(option, len, &lease->broadcast); |
496 | if (r < 0) | |
497 | log_debug_errno(r, "Failed to parse broadcast address, ignoring: %m"); | |
498 | else | |
499 | lease->have_broadcast = true; | |
f5c0c00f TG |
500 | break; |
501 | ||
a6cc569e | 502 | case DHCP_OPTION_ROUTER: |
0339cd77 LP |
503 | if (len >= 4) { |
504 | r = lease_parse_be32(option, 4, &lease->router); | |
505 | if (r < 0) | |
506 | log_debug_errno(r, "Failed to parse router address, ignoring: %m"); | |
507 | } | |
a6cc569e TG |
508 | break; |
509 | ||
510 | case DHCP_OPTION_DOMAIN_NAME_SERVER: | |
0339cd77 LP |
511 | r = lease_parse_in_addrs(option, len, &lease->dns, &lease->dns_size); |
512 | if (r < 0) | |
513 | log_debug_errno(r, "Failed to parse DNS server, ignoring: %m"); | |
a6cc569e TG |
514 | break; |
515 | ||
0339cd77 LP |
516 | case DHCP_OPTION_NTP_SERVER: |
517 | r = lease_parse_in_addrs(option, len, &lease->ntp, &lease->ntp_size); | |
518 | if (r < 0) | |
519 | log_debug_errno(r, "Failed to parse NTP server, ignoring: %m"); | |
f5c0c00f TG |
520 | break; |
521 | ||
0339cd77 LP |
522 | case DHCP_OPTION_STATIC_ROUTE: |
523 | r = lease_parse_routes(option, len, &lease->static_route, &lease->static_route_size, &lease->static_route_allocated); | |
524 | if (r < 0) | |
525 | log_debug_errno(r, "Failed to parse static routes, ignoring: %m"); | |
f5c0c00f TG |
526 | break; |
527 | ||
0339cd77 LP |
528 | case DHCP_OPTION_INTERFACE_MTU: |
529 | r = lease_parse_u16(option, len, &lease->mtu, 68); | |
530 | if (r < 0) | |
531 | log_debug_errno(r, "Failed to parse MTU, ignoring: %m"); | |
f5c0c00f TG |
532 | break; |
533 | ||
90981625 LP |
534 | case DHCP_OPTION_DOMAIN_NAME: { |
535 | _cleanup_free_ char *domainname = NULL, *normalized = NULL; | |
784d9b9c TG |
536 | |
537 | r = lease_parse_string(option, len, &domainname); | |
0339cd77 LP |
538 | if (r < 0) { |
539 | log_debug_errno(r, "Failed to parse domain name, ignoring: %m"); | |
540 | return 0; | |
541 | } | |
a6cc569e | 542 | |
90981625 LP |
543 | r = dns_name_normalize(domainname, &normalized); |
544 | if (r < 0) { | |
545 | log_debug_errno(r, "Failed to normalize domain name '%s': %m", domainname); | |
546 | return 0; | |
547 | } | |
784d9b9c | 548 | |
90981625 | 549 | if (is_localhost(normalized)) { |
e37d2c94 | 550 | log_debug_errno(r, "Detected 'localhost' as suggested domain name, ignoring."); |
37de2509 NO |
551 | break; |
552 | } | |
553 | ||
784d9b9c | 554 | free(lease->domainname); |
90981625 LP |
555 | lease->domainname = normalized; |
556 | normalized = NULL; | |
a6cc569e | 557 | |
784d9b9c TG |
558 | break; |
559 | } | |
90981625 LP |
560 | |
561 | case DHCP_OPTION_HOST_NAME: { | |
562 | _cleanup_free_ char *hostname = NULL, *normalized = NULL; | |
784d9b9c TG |
563 | |
564 | r = lease_parse_string(option, len, &hostname); | |
0339cd77 LP |
565 | if (r < 0) { |
566 | log_debug_errno(r, "Failed to parse host name, ignoring: %m"); | |
567 | return 0; | |
568 | } | |
a6cc569e | 569 | |
90981625 LP |
570 | r = dns_name_normalize(hostname, &normalized); |
571 | if (r < 0) { | |
0339cd77 | 572 | log_debug_errno(r, "Failed to normalize host name '%s', ignoring: %m", hostname); |
90981625 LP |
573 | return 0; |
574 | } | |
f50f01f4 | 575 | |
90981625 | 576 | if (is_localhost(normalized)) { |
e37d2c94 | 577 | log_debug_errno(r, "Detected 'localhost' as suggested host name, ignoring."); |
90981625 LP |
578 | return 0; |
579 | } | |
784d9b9c | 580 | |
90981625 LP |
581 | free(lease->hostname); |
582 | lease->hostname = normalized; | |
583 | normalized = NULL; | |
a6cc569e | 584 | |
784d9b9c TG |
585 | break; |
586 | } | |
ce78df79 | 587 | |
2d03c0b8 | 588 | case DHCP_OPTION_ROOT_PATH: |
0339cd77 LP |
589 | r = lease_parse_string(option, len, &lease->root_path); |
590 | if (r < 0) | |
591 | log_debug_errno(r, "Failed to parse root path, ignoring: %m"); | |
592 | break; | |
ce78df79 | 593 | |
a6cc569e | 594 | case DHCP_OPTION_RENEWAL_T1_TIME: |
0339cd77 LP |
595 | r = lease_parse_u32(option, len, &lease->t1, 1); |
596 | if (r < 0) | |
597 | log_debug_errno(r, "Failed to parse T1 time, ignoring: %m"); | |
a6cc569e TG |
598 | break; |
599 | ||
600 | case DHCP_OPTION_REBINDING_T2_TIME: | |
0339cd77 LP |
601 | r = lease_parse_u32(option, len, &lease->t2, 1); |
602 | if (r < 0) | |
603 | log_debug_errno(r, "Failed to parse T2 time, ignoring: %m"); | |
a6cc569e | 604 | break; |
e1ea665e EY |
605 | |
606 | case DHCP_OPTION_CLASSLESS_STATIC_ROUTE: | |
0339cd77 | 607 | r = lease_parse_classless_routes( |
2d03c0b8 LP |
608 | option, len, |
609 | &lease->static_route, | |
610 | &lease->static_route_size, | |
611 | &lease->static_route_allocated); | |
0339cd77 LP |
612 | if (r < 0) |
613 | log_debug_errno(r, "Failed to parse classless routes, ignoring: %m"); | |
614 | break; | |
e43a8393 | 615 | |
8eb9058d LP |
616 | case DHCP_OPTION_NEW_TZDB_TIMEZONE: { |
617 | _cleanup_free_ char *tz = NULL; | |
618 | ||
619 | r = lease_parse_string(option, len, &tz); | |
0339cd77 LP |
620 | if (r < 0) { |
621 | log_debug_errno(r, "Failed to parse timezone option, ignoring: %m"); | |
622 | return 0; | |
623 | } | |
8eb9058d | 624 | |
0339cd77 LP |
625 | if (!timezone_is_valid(tz)) { |
626 | log_debug_errno(r, "Timezone is not valid, ignoring: %m"); | |
627 | return 0; | |
628 | } | |
8eb9058d LP |
629 | |
630 | free(lease->timezone); | |
631 | lease->timezone = tz; | |
632 | tz = NULL; | |
0339cd77 | 633 | |
8eb9058d LP |
634 | break; |
635 | } | |
636 | ||
e43a8393 | 637 | case DHCP_OPTION_VENDOR_SPECIFIC: |
2d03c0b8 | 638 | |
0339cd77 LP |
639 | if (len <= 0) |
640 | lease->vendor_specific = mfree(lease->vendor_specific); | |
641 | else { | |
642 | void *p; | |
643 | ||
644 | p = memdup(option, len); | |
645 | if (!p) | |
e43a8393 | 646 | return -ENOMEM; |
e43a8393 | 647 | |
0339cd77 LP |
648 | free(lease->vendor_specific); |
649 | lease->vendor_specific = p; | |
650 | } | |
7e753d9d | 651 | |
0339cd77 LP |
652 | lease->vendor_specific_len = len; |
653 | break; | |
7e753d9d | 654 | |
0339cd77 | 655 | case DHCP_OPTION_PRIVATE_BASE ... DHCP_OPTION_PRIVATE_LAST: |
7e753d9d AC |
656 | r = dhcp_lease_insert_private_option(lease, code, option, len); |
657 | if (r < 0) | |
658 | return r; | |
0339cd77 LP |
659 | |
660 | break; | |
661 | ||
662 | default: | |
663 | log_debug("Ignoring option DHCP option %i while parsing.", code); | |
664 | break; | |
a6cc569e TG |
665 | } |
666 | ||
667 | return 0; | |
668 | } | |
669 | ||
0339cd77 | 670 | int dhcp_lease_insert_private_option(sd_dhcp_lease *lease, uint8_t tag, const void *data, uint8_t len) { |
7e753d9d AC |
671 | struct sd_dhcp_raw_option *cur, *option; |
672 | ||
0339cd77 LP |
673 | assert(lease); |
674 | ||
7e753d9d AC |
675 | LIST_FOREACH(options, cur, lease->private_options) { |
676 | if (tag < cur->tag) | |
677 | break; | |
0339cd77 LP |
678 | if (tag == cur->tag) { |
679 | log_debug("Ignoring duplicate option, tagged %i.", tag); | |
7e753d9d AC |
680 | return 0; |
681 | } | |
682 | } | |
683 | ||
684 | option = new(struct sd_dhcp_raw_option, 1); | |
685 | if (!option) | |
686 | return -ENOMEM; | |
687 | ||
688 | option->tag = tag; | |
689 | option->length = len; | |
690 | option->data = memdup(data, len); | |
691 | if (!option->data) { | |
692 | free(option); | |
693 | return -ENOMEM; | |
694 | } | |
695 | ||
696 | LIST_INSERT_BEFORE(options, lease->private_options, cur, option); | |
7e753d9d AC |
697 | return 0; |
698 | } | |
699 | ||
a6cc569e | 700 | int dhcp_lease_new(sd_dhcp_lease **ret) { |
6e00a806 | 701 | sd_dhcp_lease *lease; |
a6cc569e TG |
702 | |
703 | lease = new0(sd_dhcp_lease, 1); | |
704 | if (!lease) | |
705 | return -ENOMEM; | |
706 | ||
8ddbeaa2 | 707 | lease->router = INADDR_ANY; |
3733eec3 | 708 | lease->n_ref = 1; |
a6cc569e TG |
709 | |
710 | *ret = lease; | |
a6cc569e TG |
711 | return 0; |
712 | } | |
fe8db0c5 | 713 | |
bd91b83e | 714 | int dhcp_lease_save(sd_dhcp_lease *lease, const char *lease_file) { |
fe8db0c5 TG |
715 | _cleanup_free_ char *temp_path = NULL; |
716 | _cleanup_fclose_ FILE *f = NULL; | |
a073309f | 717 | struct sd_dhcp_raw_option *option; |
fe8db0c5 | 718 | struct in_addr address; |
a2ba62c7 | 719 | const struct in_addr *addresses; |
e4735228 | 720 | const void *client_id, *data; |
e43a8393 | 721 | size_t client_id_len, data_len; |
fe8db0c5 TG |
722 | const char *string; |
723 | uint16_t mtu; | |
e1ea665e | 724 | struct sd_dhcp_route *routes; |
0339cd77 | 725 | uint32_t t1, t2, lifetime; |
fe8db0c5 TG |
726 | int r; |
727 | ||
728 | assert(lease); | |
729 | assert(lease_file); | |
730 | ||
fe8db0c5 TG |
731 | r = fopen_temporary(lease_file, &f, &temp_path); |
732 | if (r < 0) | |
dacd6cee | 733 | goto fail; |
fe8db0c5 TG |
734 | |
735 | fchmod(fileno(f), 0644); | |
736 | ||
fe8db0c5 | 737 | fprintf(f, |
0339cd77 | 738 | "# This is private data. Do not parse.\n"); |
fe8db0c5 | 739 | |
0339cd77 LP |
740 | r = sd_dhcp_lease_get_address(lease, &address); |
741 | if (r >= 0) | |
742 | fprintf(f, "ADDRESS=%s\n", inet_ntoa(address)); | |
fe8db0c5 | 743 | |
0339cd77 LP |
744 | r = sd_dhcp_lease_get_netmask(lease, &address); |
745 | if (r >= 0) | |
746 | fprintf(f, "NETMASK=%s\n", inet_ntoa(address)); | |
fe8db0c5 | 747 | |
8ddbeaa2 UTL |
748 | r = sd_dhcp_lease_get_router(lease, &address); |
749 | if (r >= 0) | |
750 | fprintf(f, "ROUTER=%s\n", inet_ntoa(address)); | |
751 | ||
0ad853bc | 752 | r = sd_dhcp_lease_get_server_identifier(lease, &address); |
109731eb | 753 | if (r >= 0) |
0339cd77 | 754 | fprintf(f, "SERVER_ADDRESS=%s\n", inet_ntoa(address)); |
0ad853bc | 755 | |
8e34a618 | 756 | r = sd_dhcp_lease_get_next_server(lease, &address); |
109731eb TG |
757 | if (r >= 0) |
758 | fprintf(f, "NEXT_SERVER=%s\n", inet_ntoa(address)); | |
8e34a618 | 759 | |
0339cd77 LP |
760 | r = sd_dhcp_lease_get_broadcast(lease, &address); |
761 | if (r >= 0) | |
762 | fprintf(f, "BROADCAST=%s\n", inet_ntoa(address)); | |
763 | ||
fe8db0c5 TG |
764 | r = sd_dhcp_lease_get_mtu(lease, &mtu); |
765 | if (r >= 0) | |
766 | fprintf(f, "MTU=%" PRIu16 "\n", mtu); | |
767 | ||
0339cd77 LP |
768 | r = sd_dhcp_lease_get_t1(lease, &t1); |
769 | if (r >= 0) | |
770 | fprintf(f, "T1=%" PRIu32 "\n", t1); | |
771 | ||
772 | r = sd_dhcp_lease_get_t2(lease, &t2); | |
109731eb | 773 | if (r >= 0) |
0339cd77 LP |
774 | fprintf(f, "T2=%" PRIu32 "\n", t2); |
775 | ||
776 | r = sd_dhcp_lease_get_lifetime(lease, &lifetime); | |
777 | if (r >= 0) | |
778 | fprintf(f, "LIFETIME=%" PRIu32 "\n", lifetime); | |
779 | ||
780 | r = sd_dhcp_lease_get_dns(lease, &addresses); | |
781 | if (r > 0) { | |
782 | fputs("DNS=", f); | |
b0e39c82 | 783 | serialize_in_addrs(f, addresses, r); |
0339cd77 LP |
784 | fputs("\n", f); |
785 | } | |
109731eb | 786 | |
a2ba62c7 | 787 | r = sd_dhcp_lease_get_ntp(lease, &addresses); |
0339cd77 LP |
788 | if (r > 0) { |
789 | fputs("NTP=", f); | |
b0e39c82 | 790 | serialize_in_addrs(f, addresses, r); |
0339cd77 LP |
791 | fputs("\n", f); |
792 | } | |
fe8db0c5 TG |
793 | |
794 | r = sd_dhcp_lease_get_domainname(lease, &string); | |
795 | if (r >= 0) | |
796 | fprintf(f, "DOMAINNAME=%s\n", string); | |
797 | ||
798 | r = sd_dhcp_lease_get_hostname(lease, &string); | |
799 | if (r >= 0) | |
800 | fprintf(f, "HOSTNAME=%s\n", string); | |
801 | ||
ce78df79 TG |
802 | r = sd_dhcp_lease_get_root_path(lease, &string); |
803 | if (r >= 0) | |
804 | fprintf(f, "ROOT_PATH=%s\n", string); | |
805 | ||
a2ba62c7 | 806 | r = sd_dhcp_lease_get_routes(lease, &routes); |
0339cd77 | 807 | if (r > 0) |
a2ba62c7 | 808 | serialize_dhcp_routes(f, "ROUTES", routes, r); |
e1ea665e | 809 | |
8eb9058d LP |
810 | r = sd_dhcp_lease_get_timezone(lease, &string); |
811 | if (r >= 0) | |
812 | fprintf(f, "TIMEZONE=%s\n", string); | |
813 | ||
e37f74a6 DW |
814 | r = sd_dhcp_lease_get_client_id(lease, &client_id, &client_id_len); |
815 | if (r >= 0) { | |
816 | _cleanup_free_ char *client_id_hex; | |
817 | ||
dde8bb32 | 818 | client_id_hex = hexmem(client_id, client_id_len); |
e37f74a6 DW |
819 | if (!client_id_hex) { |
820 | r = -ENOMEM; | |
dacd6cee | 821 | goto fail; |
e37f74a6 DW |
822 | } |
823 | fprintf(f, "CLIENTID=%s\n", client_id_hex); | |
824 | } | |
825 | ||
e43a8393 BG |
826 | r = sd_dhcp_lease_get_vendor_specific(lease, &data, &data_len); |
827 | if (r >= 0) { | |
828 | _cleanup_free_ char *option_hex = NULL; | |
829 | ||
830 | option_hex = hexmem(data, data_len); | |
831 | if (!option_hex) { | |
832 | r = -ENOMEM; | |
dacd6cee | 833 | goto fail; |
e43a8393 BG |
834 | } |
835 | fprintf(f, "VENDOR_SPECIFIC=%s\n", option_hex); | |
836 | } | |
837 | ||
a073309f | 838 | LIST_FOREACH(options, option, lease->private_options) { |
30afef87 | 839 | char key[strlen("OPTION_000")+1]; |
0339cd77 | 840 | |
a073309f AC |
841 | snprintf(key, sizeof(key), "OPTION_%"PRIu8, option->tag); |
842 | r = serialize_dhcp_option(f, key, option->data, option->length); | |
843 | if (r < 0) | |
844 | goto fail; | |
845 | } | |
846 | ||
dacd6cee LP |
847 | r = fflush_and_check(f); |
848 | if (r < 0) | |
849 | goto fail; | |
fe8db0c5 | 850 | |
dacd6cee | 851 | if (rename(temp_path, lease_file) < 0) { |
fe8db0c5 | 852 | r = -errno; |
dacd6cee | 853 | goto fail; |
fe8db0c5 TG |
854 | } |
855 | ||
dacd6cee LP |
856 | return 0; |
857 | ||
858 | fail: | |
859 | if (temp_path) | |
860 | (void) unlink(temp_path); | |
fe8db0c5 | 861 | |
dacd6cee | 862 | return log_error_errno(r, "Failed to save lease data %s: %m", lease_file); |
fe8db0c5 TG |
863 | } |
864 | ||
bd91b83e | 865 | int dhcp_lease_load(sd_dhcp_lease **ret, const char *lease_file) { |
0339cd77 | 866 | |
fe8db0c5 | 867 | _cleanup_dhcp_lease_unref_ sd_dhcp_lease *lease = NULL; |
0339cd77 LP |
868 | _cleanup_free_ char |
869 | *address = NULL, | |
870 | *router = NULL, | |
871 | *netmask = NULL, | |
872 | *server_address = NULL, | |
873 | *next_server = NULL, | |
874 | *broadcast = NULL, | |
875 | *dns = NULL, | |
876 | *ntp = NULL, | |
877 | *mtu = NULL, | |
878 | *routes = NULL, | |
879 | *client_id_hex = NULL, | |
880 | *vendor_specific_hex = NULL, | |
881 | *lifetime = NULL, | |
882 | *t1 = NULL, | |
883 | *t2 = NULL, | |
884 | *options[DHCP_OPTION_PRIVATE_LAST - DHCP_OPTION_PRIVATE_BASE + 1] = {}; | |
885 | ||
a073309f | 886 | int r, i; |
fe8db0c5 TG |
887 | |
888 | assert(lease_file); | |
889 | assert(ret); | |
890 | ||
891 | r = dhcp_lease_new(&lease); | |
892 | if (r < 0) | |
893 | return r; | |
894 | ||
895 | r = parse_env_file(lease_file, NEWLINE, | |
896 | "ADDRESS", &address, | |
897 | "ROUTER", &router, | |
898 | "NETMASK", &netmask, | |
0ad853bc | 899 | "SERVER_IDENTIFIER", &server_address, |
8e34a618 | 900 | "NEXT_SERVER", &next_server, |
0339cd77 | 901 | "BROADCAST", &broadcast, |
109731eb TG |
902 | "DNS", &dns, |
903 | "NTP", &ntp, | |
fe8db0c5 TG |
904 | "MTU", &mtu, |
905 | "DOMAINNAME", &lease->domainname, | |
906 | "HOSTNAME", &lease->hostname, | |
ce78df79 | 907 | "ROOT_PATH", &lease->root_path, |
e1ea665e | 908 | "ROUTES", &routes, |
e37f74a6 | 909 | "CLIENTID", &client_id_hex, |
8eb9058d | 910 | "TIMEZONE", &lease->timezone, |
e43a8393 | 911 | "VENDOR_SPECIFIC", &vendor_specific_hex, |
0339cd77 LP |
912 | "LIFETIME", &lifetime, |
913 | "T1", &t1, | |
914 | "T2", &t2, | |
a073309f AC |
915 | "OPTION_224", &options[0], |
916 | "OPTION_225", &options[1], | |
917 | "OPTION_226", &options[2], | |
918 | "OPTION_227", &options[3], | |
919 | "OPTION_228", &options[4], | |
920 | "OPTION_229", &options[5], | |
921 | "OPTION_230", &options[6], | |
922 | "OPTION_231", &options[7], | |
923 | "OPTION_232", &options[8], | |
924 | "OPTION_233", &options[9], | |
925 | "OPTION_234", &options[10], | |
926 | "OPTION_235", &options[11], | |
927 | "OPTION_236", &options[12], | |
928 | "OPTION_237", &options[13], | |
929 | "OPTION_238", &options[14], | |
930 | "OPTION_239", &options[15], | |
931 | "OPTION_240", &options[16], | |
932 | "OPTION_241", &options[17], | |
933 | "OPTION_242", &options[18], | |
934 | "OPTION_243", &options[19], | |
935 | "OPTION_244", &options[20], | |
936 | "OPTION_245", &options[21], | |
937 | "OPTION_246", &options[22], | |
938 | "OPTION_247", &options[23], | |
939 | "OPTION_248", &options[24], | |
940 | "OPTION_249", &options[25], | |
941 | "OPTION_250", &options[26], | |
942 | "OPTION_251", &options[27], | |
943 | "OPTION_252", &options[28], | |
944 | "OPTION_253", &options[29], | |
945 | "OPTION_254", &options[30], | |
fe8db0c5 | 946 | NULL); |
fe8db0c5 TG |
947 | if (r < 0) |
948 | return r; | |
949 | ||
0339cd77 LP |
950 | if (address) { |
951 | r = inet_pton(AF_INET, address, &lease->address); | |
952 | if (r <= 0) | |
953 | log_debug_errno(errno, "Failed to parse address %s, ignoring: %m", address); | |
954 | } | |
fe8db0c5 | 955 | |
8ddbeaa2 | 956 | if (router) { |
0339cd77 LP |
957 | r = inet_pton(AF_INET, router, &lease->router); |
958 | if (r <= 0) | |
959 | log_debug_errno(errno, "Failed to parse router %s, ignoring: %m", router); | |
8ddbeaa2 | 960 | } |
fe8db0c5 | 961 | |
0339cd77 LP |
962 | if (netmask) { |
963 | r = inet_pton(AF_INET, netmask, &lease->subnet_mask); | |
964 | if (r <= 0) | |
965 | log_debug_errno(errno, "Failed to parse netmask %s, ignoring: %m", netmask); | |
966 | else | |
967 | lease->have_subnet_mask = true; | |
968 | } | |
fe8db0c5 | 969 | |
0ad853bc | 970 | if (server_address) { |
0339cd77 LP |
971 | r = inet_pton(AF_INET, server_address, &lease->server_address); |
972 | if (r <= 0) | |
973 | log_debug_errno(errno, "Failed to parse netmask %s, ignoring: %m", server_address); | |
0ad853bc TG |
974 | } |
975 | ||
8e34a618 | 976 | if (next_server) { |
0339cd77 LP |
977 | r = inet_pton(AF_INET, next_server, &lease->next_server); |
978 | if (r <= 0) | |
979 | log_debug_errno(errno, "Failed to parse next server %s, ignoring: %m", next_server); | |
980 | } | |
8e34a618 | 981 | |
0339cd77 LP |
982 | if (broadcast) { |
983 | r = inet_pton(AF_INET, broadcast, &lease->broadcast); | |
984 | if (r <= 0) | |
985 | log_debug_errno(errno, "Failed to parse broadcast address %s, ignoring: %m", broadcast); | |
986 | else | |
987 | lease->have_broadcast = true; | |
8e34a618 TG |
988 | } |
989 | ||
109731eb | 990 | if (dns) { |
a2ba62c7 | 991 | r = deserialize_in_addrs(&lease->dns, dns); |
109731eb | 992 | if (r < 0) |
0339cd77 LP |
993 | log_debug_errno(r, "Failed to deserialize DNS servers %s, ignoring: %m", dns); |
994 | else | |
995 | lease->dns_size = r; | |
109731eb TG |
996 | } |
997 | ||
998 | if (ntp) { | |
a2ba62c7 | 999 | r = deserialize_in_addrs(&lease->ntp, ntp); |
109731eb | 1000 | if (r < 0) |
0339cd77 LP |
1001 | log_debug_errno(r, "Failed to deserialize NTP servers %s, ignoring: %m", ntp); |
1002 | else | |
1003 | lease->ntp_size = r; | |
109731eb TG |
1004 | } |
1005 | ||
fe8db0c5 | 1006 | if (mtu) { |
0339cd77 LP |
1007 | r = safe_atou16(mtu, &lease->mtu); |
1008 | if (r < 0) | |
1009 | log_debug_errno(r, "Failed to parse MTU %s, ignoring: %m", mtu); | |
fe8db0c5 TG |
1010 | } |
1011 | ||
e1ea665e | 1012 | if (routes) { |
0339cd77 LP |
1013 | r = deserialize_dhcp_routes( |
1014 | &lease->static_route, | |
1015 | &lease->static_route_size, | |
1016 | &lease->static_route_allocated, | |
1017 | routes); | |
1018 | if (r < 0) | |
1019 | log_debug_errno(r, "Failed to parse DHCP routes %s, ignoring: %m", routes); | |
1020 | } | |
1021 | ||
1022 | if (lifetime) { | |
1023 | r = safe_atou32(lifetime, &lease->lifetime); | |
1024 | if (r < 0) | |
1025 | log_debug_errno(r, "Failed to parse lifetime %s, ignoring: %m", lifetime); | |
1026 | } | |
1027 | ||
1028 | if (t1) { | |
1029 | r = safe_atou32(t1, &lease->t1); | |
1030 | if (r < 0) | |
1031 | log_debug_errno(r, "Failed to parse T1 %s, ignoring: %m", t1); | |
1032 | } | |
1033 | ||
1034 | if (t2) { | |
1035 | r = safe_atou32(t2, &lease->t2); | |
e1ea665e | 1036 | if (r < 0) |
0339cd77 | 1037 | log_debug_errno(r, "Failed to parse T2 %s, ignoring: %m", t2); |
e1ea665e EY |
1038 | } |
1039 | ||
e37f74a6 | 1040 | if (client_id_hex) { |
9b57d9ae | 1041 | r = deserialize_dhcp_option(&lease->client_id, &lease->client_id_len, client_id_hex); |
30494563 | 1042 | if (r < 0) |
0339cd77 | 1043 | log_debug_errno(r, "Failed to parse client ID %s, ignoring: %m", client_id_hex); |
e37f74a6 DW |
1044 | } |
1045 | ||
e43a8393 | 1046 | if (vendor_specific_hex) { |
9b57d9ae | 1047 | r = deserialize_dhcp_option(&lease->vendor_specific, &lease->vendor_specific_len, vendor_specific_hex); |
e43a8393 | 1048 | if (r < 0) |
0339cd77 | 1049 | log_debug_errno(r, "Failed to parse vendor specific data %s, ignoring: %m", vendor_specific_hex); |
e43a8393 BG |
1050 | } |
1051 | ||
a073309f | 1052 | for (i = 0; i <= DHCP_OPTION_PRIVATE_LAST - DHCP_OPTION_PRIVATE_BASE; i++) { |
e4735228 | 1053 | _cleanup_free_ void *data = NULL; |
a073309f AC |
1054 | size_t len; |
1055 | ||
1056 | if (!options[i]) | |
1057 | continue; | |
1058 | ||
1059 | r = deserialize_dhcp_option(&data, &len, options[i]); | |
0339cd77 LP |
1060 | if (r < 0) { |
1061 | log_debug_errno(r, "Failed to parse private DHCP option %s, ignoring: %m", options[i]); | |
1062 | continue; | |
1063 | } | |
a073309f AC |
1064 | |
1065 | r = dhcp_lease_insert_private_option(lease, DHCP_OPTION_PRIVATE_BASE + i, data, len); | |
626be147 | 1066 | if (r < 0) |
a073309f AC |
1067 | return r; |
1068 | } | |
1069 | ||
fe8db0c5 TG |
1070 | *ret = lease; |
1071 | lease = NULL; | |
1072 | ||
1073 | return 0; | |
1074 | } | |
9e64dd72 TG |
1075 | |
1076 | int dhcp_lease_set_default_subnet_mask(sd_dhcp_lease *lease) { | |
0339cd77 | 1077 | struct in_addr address, mask; |
df40eee8 | 1078 | int r; |
9e64dd72 TG |
1079 | |
1080 | assert(lease); | |
9e64dd72 | 1081 | |
0339cd77 LP |
1082 | if (lease->address == 0) |
1083 | return -ENODATA; | |
1084 | ||
df40eee8 | 1085 | address.s_addr = lease->address; |
9e64dd72 TG |
1086 | |
1087 | /* fall back to the default subnet masks based on address class */ | |
df40eee8 TG |
1088 | r = in_addr_default_subnet_mask(&address, &mask); |
1089 | if (r < 0) | |
1090 | return r; | |
9e64dd72 | 1091 | |
df40eee8 | 1092 | lease->subnet_mask = mask.s_addr; |
0339cd77 | 1093 | lease->have_subnet_mask = true; |
9e64dd72 TG |
1094 | |
1095 | return 0; | |
1096 | } | |
e37f74a6 | 1097 | |
0339cd77 | 1098 | int sd_dhcp_lease_get_client_id(sd_dhcp_lease *lease, const void **client_id, size_t *client_id_len) { |
e37f74a6 DW |
1099 | assert_return(lease, -EINVAL); |
1100 | assert_return(client_id, -EINVAL); | |
1101 | assert_return(client_id_len, -EINVAL); | |
1102 | ||
0339cd77 LP |
1103 | if (!lease->client_id) |
1104 | return -ENODATA; | |
1105 | ||
e37f74a6 DW |
1106 | *client_id = lease->client_id; |
1107 | *client_id_len = lease->client_id_len; | |
0339cd77 | 1108 | |
e37f74a6 DW |
1109 | return 0; |
1110 | } | |
1111 | ||
0339cd77 | 1112 | int dhcp_lease_set_client_id(sd_dhcp_lease *lease, const void *client_id, size_t client_id_len) { |
e37f74a6 | 1113 | assert_return(lease, -EINVAL); |
0339cd77 LP |
1114 | assert_return(client_id || client_id_len <= 0, -EINVAL); |
1115 | ||
1116 | if (client_id_len <= 0) | |
1117 | lease->client_id = mfree(lease->client_id); | |
1118 | else { | |
1119 | void *p; | |
e37f74a6 | 1120 | |
0339cd77 LP |
1121 | p = memdup(client_id, client_id_len); |
1122 | if (!p) | |
1123 | return -ENOMEM; | |
e37f74a6 | 1124 | |
0339cd77 LP |
1125 | free(lease->client_id); |
1126 | lease->client_id = p; | |
e37f74a6 DW |
1127 | lease->client_id_len = client_id_len; |
1128 | } | |
1129 | ||
1130 | return 0; | |
1131 | } | |
8eb9058d | 1132 | |
64d6c229 | 1133 | int sd_dhcp_lease_get_timezone(sd_dhcp_lease *lease, const char **tz) { |
8eb9058d | 1134 | assert_return(lease, -EINVAL); |
64d6c229 | 1135 | assert_return(tz, -EINVAL); |
8eb9058d LP |
1136 | |
1137 | if (!lease->timezone) | |
0339cd77 | 1138 | return -ENODATA; |
8eb9058d | 1139 | |
64d6c229 | 1140 | *tz = lease->timezone; |
8eb9058d LP |
1141 | return 0; |
1142 | } |