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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" |
b11d6a7b | 35 | #include "hexdecoct.h" |
958b66ea | 36 | #include "hostname-util.h" |
07630cea | 37 | #include "in-addr-util.h" |
0339cd77 | 38 | #include "network-internal.h" |
6bedfcbb | 39 | #include "parse-util.h" |
d054f0a4 | 40 | #include "stdio-util.h" |
b11d6a7b | 41 | #include "string-util.h" |
07630cea | 42 | #include "unaligned.h" |
a6cc569e TG |
43 | |
44 | int sd_dhcp_lease_get_address(sd_dhcp_lease *lease, struct in_addr *addr) { | |
45 | assert_return(lease, -EINVAL); | |
46 | assert_return(addr, -EINVAL); | |
47 | ||
0339cd77 LP |
48 | if (lease->address == 0) |
49 | return -ENODATA; | |
50 | ||
a6cc569e | 51 | addr->s_addr = lease->address; |
0339cd77 LP |
52 | return 0; |
53 | } | |
a6cc569e | 54 | |
0339cd77 LP |
55 | int sd_dhcp_lease_get_broadcast(sd_dhcp_lease *lease, struct in_addr *addr) { |
56 | assert_return(lease, -EINVAL); | |
57 | assert_return(addr, -EINVAL); | |
58 | ||
59 | if (!lease->have_broadcast) | |
60 | return -ENODATA; | |
61 | ||
62 | addr->s_addr = lease->broadcast; | |
a6cc569e TG |
63 | return 0; |
64 | } | |
65 | ||
68ceb9df PF |
66 | int sd_dhcp_lease_get_lifetime(sd_dhcp_lease *lease, uint32_t *lifetime) { |
67 | assert_return(lease, -EINVAL); | |
1c6eb4e3 | 68 | assert_return(lifetime, -EINVAL); |
68ceb9df | 69 | |
0339cd77 LP |
70 | if (lease->lifetime <= 0) |
71 | return -ENODATA; | |
72 | ||
68ceb9df | 73 | *lifetime = lease->lifetime; |
0339cd77 LP |
74 | return 0; |
75 | } | |
68ceb9df | 76 | |
0339cd77 LP |
77 | int sd_dhcp_lease_get_t1(sd_dhcp_lease *lease, uint32_t *t1) { |
78 | assert_return(lease, -EINVAL); | |
79 | assert_return(t1, -EINVAL); | |
80 | ||
81 | if (lease->t1 <= 0) | |
82 | return -ENODATA; | |
83 | ||
84 | *t1 = lease->t1; | |
85 | return 0; | |
86 | } | |
87 | ||
88 | int sd_dhcp_lease_get_t2(sd_dhcp_lease *lease, uint32_t *t2) { | |
89 | assert_return(lease, -EINVAL); | |
90 | assert_return(t2, -EINVAL); | |
91 | ||
92 | if (lease->t2 <= 0) | |
93 | return -ENODATA; | |
94 | ||
95 | *t2 = lease->t2; | |
68ceb9df PF |
96 | return 0; |
97 | } | |
98 | ||
a6cc569e TG |
99 | int sd_dhcp_lease_get_mtu(sd_dhcp_lease *lease, uint16_t *mtu) { |
100 | assert_return(lease, -EINVAL); | |
101 | assert_return(mtu, -EINVAL); | |
102 | ||
0339cd77 LP |
103 | if (lease->mtu <= 0) |
104 | return -ENODATA; | |
a6cc569e | 105 | |
0339cd77 | 106 | *mtu = lease->mtu; |
a6cc569e TG |
107 | return 0; |
108 | } | |
109 | ||
a2ba62c7 | 110 | int sd_dhcp_lease_get_dns(sd_dhcp_lease *lease, const struct in_addr **addr) { |
a6cc569e TG |
111 | assert_return(lease, -EINVAL); |
112 | assert_return(addr, -EINVAL); | |
a6cc569e | 113 | |
0339cd77 LP |
114 | if (lease->dns_size <= 0) |
115 | return -ENODATA; | |
a6cc569e | 116 | |
0339cd77 LP |
117 | *addr = lease->dns; |
118 | return (int) lease->dns_size; | |
a6cc569e TG |
119 | } |
120 | ||
a2ba62c7 | 121 | int sd_dhcp_lease_get_ntp(sd_dhcp_lease *lease, const struct in_addr **addr) { |
46844696 TG |
122 | assert_return(lease, -EINVAL); |
123 | assert_return(addr, -EINVAL); | |
46844696 | 124 | |
0339cd77 LP |
125 | if (lease->ntp_size <= 0) |
126 | return -ENODATA; | |
46844696 | 127 | |
0339cd77 LP |
128 | *addr = lease->ntp; |
129 | return (int) lease->ntp_size; | |
46844696 TG |
130 | } |
131 | ||
a6cc569e TG |
132 | int sd_dhcp_lease_get_domainname(sd_dhcp_lease *lease, const char **domainname) { |
133 | assert_return(lease, -EINVAL); | |
134 | assert_return(domainname, -EINVAL); | |
135 | ||
0339cd77 LP |
136 | if (!lease->domainname) |
137 | return -ENODATA; | |
a6cc569e | 138 | |
0339cd77 | 139 | *domainname = lease->domainname; |
a6cc569e TG |
140 | return 0; |
141 | } | |
142 | ||
143 | int sd_dhcp_lease_get_hostname(sd_dhcp_lease *lease, const char **hostname) { | |
144 | assert_return(lease, -EINVAL); | |
145 | assert_return(hostname, -EINVAL); | |
146 | ||
0339cd77 LP |
147 | if (!lease->hostname) |
148 | return -ENODATA; | |
a6cc569e | 149 | |
0339cd77 | 150 | *hostname = lease->hostname; |
a6cc569e TG |
151 | return 0; |
152 | } | |
153 | ||
ce78df79 TG |
154 | int sd_dhcp_lease_get_root_path(sd_dhcp_lease *lease, const char **root_path) { |
155 | assert_return(lease, -EINVAL); | |
156 | assert_return(root_path, -EINVAL); | |
157 | ||
0339cd77 LP |
158 | if (!lease->root_path) |
159 | return -ENODATA; | |
ce78df79 | 160 | |
0339cd77 | 161 | *root_path = lease->root_path; |
ce78df79 TG |
162 | return 0; |
163 | } | |
164 | ||
a6cc569e TG |
165 | int sd_dhcp_lease_get_router(sd_dhcp_lease *lease, struct in_addr *addr) { |
166 | assert_return(lease, -EINVAL); | |
167 | assert_return(addr, -EINVAL); | |
168 | ||
0339cd77 LP |
169 | if (lease->router == 0) |
170 | return -ENODATA; | |
a6cc569e | 171 | |
0339cd77 | 172 | addr->s_addr = lease->router; |
a6cc569e TG |
173 | return 0; |
174 | } | |
175 | ||
176 | int sd_dhcp_lease_get_netmask(sd_dhcp_lease *lease, struct in_addr *addr) { | |
177 | assert_return(lease, -EINVAL); | |
178 | assert_return(addr, -EINVAL); | |
179 | ||
0339cd77 LP |
180 | if (!lease->have_subnet_mask) |
181 | return -ENODATA; | |
a6cc569e | 182 | |
0339cd77 | 183 | addr->s_addr = lease->subnet_mask; |
a6cc569e TG |
184 | return 0; |
185 | } | |
186 | ||
0ad853bc TG |
187 | int sd_dhcp_lease_get_server_identifier(sd_dhcp_lease *lease, struct in_addr *addr) { |
188 | assert_return(lease, -EINVAL); | |
189 | assert_return(addr, -EINVAL); | |
190 | ||
0339cd77 LP |
191 | if (lease->server_address == 0) |
192 | return -ENODATA; | |
0ad853bc | 193 | |
0339cd77 | 194 | addr->s_addr = lease->server_address; |
0ad853bc TG |
195 | return 0; |
196 | } | |
197 | ||
8e34a618 TG |
198 | int sd_dhcp_lease_get_next_server(sd_dhcp_lease *lease, struct in_addr *addr) { |
199 | assert_return(lease, -EINVAL); | |
200 | assert_return(addr, -EINVAL); | |
201 | ||
0339cd77 LP |
202 | if (lease->next_server == 0) |
203 | return -ENODATA; | |
8e34a618 | 204 | |
0339cd77 | 205 | addr->s_addr = lease->next_server; |
8e34a618 TG |
206 | return 0; |
207 | } | |
208 | ||
a2ba62c7 | 209 | int sd_dhcp_lease_get_routes(sd_dhcp_lease *lease, struct sd_dhcp_route **routes) { |
e1ea665e EY |
210 | assert_return(lease, -EINVAL); |
211 | assert_return(routes, -EINVAL); | |
e1ea665e | 212 | |
0339cd77 LP |
213 | if (lease->static_route_size <= 0) |
214 | return -ENODATA; | |
e1ea665e | 215 | |
0339cd77 LP |
216 | *routes = lease->static_route; |
217 | return (int) lease->static_route_size; | |
e1ea665e EY |
218 | } |
219 | ||
0339cd77 | 220 | int sd_dhcp_lease_get_vendor_specific(sd_dhcp_lease *lease, const void **data, size_t *data_len) { |
e43a8393 BG |
221 | assert_return(lease, -EINVAL); |
222 | assert_return(data, -EINVAL); | |
223 | assert_return(data_len, -EINVAL); | |
224 | ||
0339cd77 LP |
225 | if (lease->vendor_specific_len <= 0) |
226 | return -ENODATA; | |
e43a8393 BG |
227 | |
228 | *data = lease->vendor_specific; | |
229 | *data_len = lease->vendor_specific_len; | |
e43a8393 BG |
230 | return 0; |
231 | } | |
232 | ||
a6cc569e | 233 | sd_dhcp_lease *sd_dhcp_lease_ref(sd_dhcp_lease *lease) { |
3733eec3 LP |
234 | |
235 | if (!lease) | |
236 | return NULL; | |
237 | ||
238 | assert(lease->n_ref >= 1); | |
239 | lease->n_ref++; | |
a6cc569e TG |
240 | |
241 | return lease; | |
242 | } | |
243 | ||
244 | sd_dhcp_lease *sd_dhcp_lease_unref(sd_dhcp_lease *lease) { | |
7e753d9d | 245 | |
3733eec3 LP |
246 | if (!lease) |
247 | return NULL; | |
7e753d9d | 248 | |
3733eec3 LP |
249 | assert(lease->n_ref >= 1); |
250 | lease->n_ref--; | |
251 | ||
252 | if (lease->n_ref > 0) | |
253 | return NULL; | |
254 | ||
255 | while (lease->private_options) { | |
256 | struct sd_dhcp_raw_option *option = lease->private_options; | |
257 | ||
258 | LIST_REMOVE(options, lease->private_options, option); | |
259 | ||
260 | free(option->data); | |
261 | free(option); | |
a6cc569e TG |
262 | } |
263 | ||
3733eec3 LP |
264 | free(lease->hostname); |
265 | free(lease->domainname); | |
266 | free(lease->dns); | |
267 | free(lease->ntp); | |
268 | free(lease->static_route); | |
269 | free(lease->client_id); | |
270 | free(lease->vendor_specific); | |
271 | free(lease); | |
272 | ||
a6cc569e TG |
273 | return NULL; |
274 | } | |
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 TG |
334 | |
335 | free(*ret); | |
336 | *ret = string; | |
0339cd77 | 337 | } |
e140ae58 TG |
338 | |
339 | return 0; | |
340 | } | |
341 | ||
0339cd77 | 342 | static int lease_parse_in_addrs(const uint8_t *option, size_t len, struct in_addr **ret, size_t *n_ret) { |
e140ae58 TG |
343 | assert(option); |
344 | assert(ret); | |
0339cd77 | 345 | assert(n_ret); |
e140ae58 | 346 | |
0339cd77 LP |
347 | if (len <= 0) { |
348 | *ret = mfree(*ret); | |
349 | *n_ret = 0; | |
350 | } else { | |
351 | size_t n_addresses; | |
e140ae58 TG |
352 | struct in_addr *addresses; |
353 | ||
0339cd77 LP |
354 | if (len % 4 != 0) |
355 | return -EINVAL; | |
e140ae58 | 356 | |
0339cd77 LP |
357 | n_addresses = len / 4; |
358 | ||
359 | addresses = newdup(struct in_addr, option, n_addresses); | |
e140ae58 TG |
360 | if (!addresses) |
361 | return -ENOMEM; | |
362 | ||
363 | free(*ret); | |
364 | *ret = addresses; | |
0339cd77 | 365 | *n_ret = n_addresses; |
e140ae58 TG |
366 | } |
367 | ||
368 | return 0; | |
369 | } | |
370 | ||
0339cd77 LP |
371 | static int lease_parse_routes( |
372 | const uint8_t *option, size_t len, | |
373 | struct sd_dhcp_route **routes, size_t *routes_size, size_t *routes_allocated) { | |
e1ea665e EY |
374 | |
375 | struct in_addr addr; | |
376 | ||
0339cd77 | 377 | assert(option || len <= 0); |
e1ea665e EY |
378 | assert(routes); |
379 | assert(routes_size); | |
380 | assert(routes_allocated); | |
381 | ||
0339cd77 | 382 | if (len <= 0) |
e1ea665e EY |
383 | return 0; |
384 | ||
385 | if (len % 8 != 0) | |
386 | return -EINVAL; | |
387 | ||
388 | if (!GREEDY_REALLOC(*routes, *routes_allocated, *routes_size + (len / 8))) | |
389 | return -ENOMEM; | |
390 | ||
391 | while (len >= 8) { | |
392 | struct sd_dhcp_route *route = *routes + *routes_size; | |
1caa12d0 | 393 | int r; |
e1ea665e | 394 | |
1caa12d0 TG |
395 | r = in_addr_default_prefixlen((struct in_addr*) option, &route->dst_prefixlen); |
396 | if (r < 0) { | |
0339cd77 | 397 | log_debug("Failed to determine destination prefix length from class based IP, ignoring"); |
e1ea665e EY |
398 | continue; |
399 | } | |
400 | ||
0339cd77 | 401 | assert_se(lease_parse_be32(option, 4, &addr.s_addr) >= 0); |
e1ea665e EY |
402 | route->dst_addr = inet_makeaddr(inet_netof(addr), 0); |
403 | option += 4; | |
404 | ||
0339cd77 | 405 | assert_se(lease_parse_be32(option, 4, &route->gw_addr.s_addr) >= 0); |
e1ea665e EY |
406 | option += 4; |
407 | ||
408 | len -= 8; | |
409 | (*routes_size)++; | |
410 | } | |
411 | ||
412 | return 0; | |
413 | } | |
414 | ||
415 | /* parses RFC3442 Classless Static Route Option */ | |
0339cd77 LP |
416 | static int lease_parse_classless_routes( |
417 | const uint8_t *option, size_t len, | |
418 | struct sd_dhcp_route **routes, size_t *routes_size, size_t *routes_allocated) { | |
e1ea665e | 419 | |
0339cd77 | 420 | assert(option || len <= 0); |
e1ea665e EY |
421 | assert(routes); |
422 | assert(routes_size); | |
423 | assert(routes_allocated); | |
424 | ||
0339cd77 LP |
425 | if (len <= 0) |
426 | return 0; | |
427 | ||
e1ea665e EY |
428 | /* option format: (subnet-mask-width significant-subnet-octets gateway-ip)* */ |
429 | ||
430 | while (len > 0) { | |
431 | uint8_t dst_octets; | |
432 | struct sd_dhcp_route *route; | |
433 | ||
434 | if (!GREEDY_REALLOC(*routes, *routes_allocated, *routes_size + 1)) | |
0339cd77 | 435 | return -ENOMEM; |
e1ea665e EY |
436 | |
437 | route = *routes + *routes_size; | |
438 | ||
439 | dst_octets = (*option == 0 ? 0 : ((*option - 1) / 8) + 1); | |
440 | route->dst_prefixlen = *option; | |
441 | option++; | |
442 | len--; | |
443 | ||
444 | /* can't have more than 4 octets in IPv4 */ | |
445 | if (dst_octets > 4 || len < dst_octets) | |
446 | return -EINVAL; | |
447 | ||
448 | route->dst_addr.s_addr = 0; | |
449 | memcpy(&route->dst_addr.s_addr, option, dst_octets); | |
450 | option += dst_octets; | |
451 | len -= dst_octets; | |
452 | ||
453 | if (len < 4) | |
454 | return -EINVAL; | |
455 | ||
456 | lease_parse_be32(option, 4, &route->gw_addr.s_addr); | |
457 | option += 4; | |
458 | len -= 4; | |
459 | ||
460 | (*routes_size)++; | |
461 | } | |
462 | ||
463 | return 0; | |
464 | } | |
465 | ||
e4735228 | 466 | int dhcp_lease_parse_options(uint8_t code, uint8_t len, const void *option, void *userdata) { |
2d03c0b8 | 467 | sd_dhcp_lease *lease = userdata; |
e140ae58 TG |
468 | int r; |
469 | ||
470 | assert(lease); | |
a6cc569e TG |
471 | |
472 | switch(code) { | |
473 | ||
474 | case DHCP_OPTION_IP_ADDRESS_LEASE_TIME: | |
0339cd77 LP |
475 | r = lease_parse_u32(option, len, &lease->lifetime, 1); |
476 | if (r < 0) | |
477 | log_debug_errno(r, "Failed to parse lease time, ignoring: %m"); | |
478 | ||
a6cc569e TG |
479 | break; |
480 | ||
481 | case DHCP_OPTION_SERVER_IDENTIFIER: | |
0339cd77 LP |
482 | r = lease_parse_be32(option, len, &lease->server_address); |
483 | if (r < 0) | |
484 | log_debug_errno(r, "Failed to parse server identifier, ignoring: %m"); | |
485 | ||
a6cc569e TG |
486 | break; |
487 | ||
488 | case DHCP_OPTION_SUBNET_MASK: | |
0339cd77 LP |
489 | r = lease_parse_be32(option, len, &lease->subnet_mask); |
490 | if (r < 0) | |
491 | log_debug_errno(r, "Failed to parse subnet mask, ignoring: %m"); | |
492 | else | |
493 | lease->have_subnet_mask = true; | |
a6cc569e TG |
494 | break; |
495 | ||
f5c0c00f | 496 | case DHCP_OPTION_BROADCAST: |
0339cd77 LP |
497 | r = lease_parse_be32(option, len, &lease->broadcast); |
498 | if (r < 0) | |
499 | log_debug_errno(r, "Failed to parse broadcast address, ignoring: %m"); | |
500 | else | |
501 | lease->have_broadcast = true; | |
f5c0c00f TG |
502 | break; |
503 | ||
a6cc569e | 504 | case DHCP_OPTION_ROUTER: |
0339cd77 LP |
505 | if (len >= 4) { |
506 | r = lease_parse_be32(option, 4, &lease->router); | |
507 | if (r < 0) | |
508 | log_debug_errno(r, "Failed to parse router address, ignoring: %m"); | |
509 | } | |
a6cc569e TG |
510 | break; |
511 | ||
512 | case DHCP_OPTION_DOMAIN_NAME_SERVER: | |
0339cd77 LP |
513 | r = lease_parse_in_addrs(option, len, &lease->dns, &lease->dns_size); |
514 | if (r < 0) | |
515 | log_debug_errno(r, "Failed to parse DNS server, ignoring: %m"); | |
a6cc569e TG |
516 | break; |
517 | ||
0339cd77 LP |
518 | case DHCP_OPTION_NTP_SERVER: |
519 | r = lease_parse_in_addrs(option, len, &lease->ntp, &lease->ntp_size); | |
520 | if (r < 0) | |
521 | log_debug_errno(r, "Failed to parse NTP server, ignoring: %m"); | |
f5c0c00f TG |
522 | break; |
523 | ||
0339cd77 LP |
524 | case DHCP_OPTION_STATIC_ROUTE: |
525 | r = lease_parse_routes(option, len, &lease->static_route, &lease->static_route_size, &lease->static_route_allocated); | |
526 | if (r < 0) | |
527 | log_debug_errno(r, "Failed to parse static routes, ignoring: %m"); | |
f5c0c00f TG |
528 | break; |
529 | ||
0339cd77 LP |
530 | case DHCP_OPTION_INTERFACE_MTU: |
531 | r = lease_parse_u16(option, len, &lease->mtu, 68); | |
532 | if (r < 0) | |
533 | log_debug_errno(r, "Failed to parse MTU, ignoring: %m"); | |
f5c0c00f TG |
534 | break; |
535 | ||
90981625 LP |
536 | case DHCP_OPTION_DOMAIN_NAME: { |
537 | _cleanup_free_ char *domainname = NULL, *normalized = NULL; | |
784d9b9c TG |
538 | |
539 | r = lease_parse_string(option, len, &domainname); | |
0339cd77 LP |
540 | if (r < 0) { |
541 | log_debug_errno(r, "Failed to parse domain name, ignoring: %m"); | |
542 | return 0; | |
543 | } | |
a6cc569e | 544 | |
90981625 LP |
545 | r = dns_name_normalize(domainname, &normalized); |
546 | if (r < 0) { | |
547 | log_debug_errno(r, "Failed to normalize domain name '%s': %m", domainname); | |
548 | return 0; | |
549 | } | |
784d9b9c | 550 | |
90981625 | 551 | if (is_localhost(normalized)) { |
e37d2c94 | 552 | log_debug_errno(r, "Detected 'localhost' as suggested domain name, ignoring."); |
37de2509 NO |
553 | break; |
554 | } | |
555 | ||
784d9b9c | 556 | free(lease->domainname); |
90981625 LP |
557 | lease->domainname = normalized; |
558 | normalized = NULL; | |
a6cc569e | 559 | |
784d9b9c TG |
560 | break; |
561 | } | |
90981625 LP |
562 | |
563 | case DHCP_OPTION_HOST_NAME: { | |
564 | _cleanup_free_ char *hostname = NULL, *normalized = NULL; | |
784d9b9c TG |
565 | |
566 | r = lease_parse_string(option, len, &hostname); | |
0339cd77 LP |
567 | if (r < 0) { |
568 | log_debug_errno(r, "Failed to parse host name, ignoring: %m"); | |
569 | return 0; | |
570 | } | |
a6cc569e | 571 | |
90981625 LP |
572 | r = dns_name_normalize(hostname, &normalized); |
573 | if (r < 0) { | |
0339cd77 | 574 | log_debug_errno(r, "Failed to normalize host name '%s', ignoring: %m", hostname); |
90981625 LP |
575 | return 0; |
576 | } | |
f50f01f4 | 577 | |
90981625 | 578 | if (is_localhost(normalized)) { |
e37d2c94 | 579 | log_debug_errno(r, "Detected 'localhost' as suggested host name, ignoring."); |
90981625 LP |
580 | return 0; |
581 | } | |
784d9b9c | 582 | |
90981625 LP |
583 | free(lease->hostname); |
584 | lease->hostname = normalized; | |
585 | normalized = NULL; | |
a6cc569e | 586 | |
784d9b9c TG |
587 | break; |
588 | } | |
ce78df79 | 589 | |
2d03c0b8 | 590 | case DHCP_OPTION_ROOT_PATH: |
0339cd77 LP |
591 | r = lease_parse_string(option, len, &lease->root_path); |
592 | if (r < 0) | |
593 | log_debug_errno(r, "Failed to parse root path, ignoring: %m"); | |
594 | break; | |
ce78df79 | 595 | |
a6cc569e | 596 | case DHCP_OPTION_RENEWAL_T1_TIME: |
0339cd77 LP |
597 | r = lease_parse_u32(option, len, &lease->t1, 1); |
598 | if (r < 0) | |
599 | log_debug_errno(r, "Failed to parse T1 time, ignoring: %m"); | |
a6cc569e TG |
600 | break; |
601 | ||
602 | case DHCP_OPTION_REBINDING_T2_TIME: | |
0339cd77 LP |
603 | r = lease_parse_u32(option, len, &lease->t2, 1); |
604 | if (r < 0) | |
605 | log_debug_errno(r, "Failed to parse T2 time, ignoring: %m"); | |
a6cc569e | 606 | break; |
e1ea665e EY |
607 | |
608 | case DHCP_OPTION_CLASSLESS_STATIC_ROUTE: | |
0339cd77 | 609 | r = lease_parse_classless_routes( |
2d03c0b8 LP |
610 | option, len, |
611 | &lease->static_route, | |
612 | &lease->static_route_size, | |
613 | &lease->static_route_allocated); | |
0339cd77 LP |
614 | if (r < 0) |
615 | log_debug_errno(r, "Failed to parse classless routes, ignoring: %m"); | |
616 | break; | |
e43a8393 | 617 | |
8eb9058d LP |
618 | case DHCP_OPTION_NEW_TZDB_TIMEZONE: { |
619 | _cleanup_free_ char *tz = NULL; | |
620 | ||
621 | r = lease_parse_string(option, len, &tz); | |
0339cd77 LP |
622 | if (r < 0) { |
623 | log_debug_errno(r, "Failed to parse timezone option, ignoring: %m"); | |
624 | return 0; | |
625 | } | |
8eb9058d | 626 | |
0339cd77 LP |
627 | if (!timezone_is_valid(tz)) { |
628 | log_debug_errno(r, "Timezone is not valid, ignoring: %m"); | |
629 | return 0; | |
630 | } | |
8eb9058d LP |
631 | |
632 | free(lease->timezone); | |
633 | lease->timezone = tz; | |
634 | tz = NULL; | |
0339cd77 | 635 | |
8eb9058d LP |
636 | break; |
637 | } | |
638 | ||
e43a8393 | 639 | case DHCP_OPTION_VENDOR_SPECIFIC: |
2d03c0b8 | 640 | |
0339cd77 LP |
641 | if (len <= 0) |
642 | lease->vendor_specific = mfree(lease->vendor_specific); | |
643 | else { | |
644 | void *p; | |
645 | ||
646 | p = memdup(option, len); | |
647 | if (!p) | |
e43a8393 | 648 | return -ENOMEM; |
e43a8393 | 649 | |
0339cd77 LP |
650 | free(lease->vendor_specific); |
651 | lease->vendor_specific = p; | |
652 | } | |
7e753d9d | 653 | |
0339cd77 LP |
654 | lease->vendor_specific_len = len; |
655 | break; | |
7e753d9d | 656 | |
0339cd77 | 657 | case DHCP_OPTION_PRIVATE_BASE ... DHCP_OPTION_PRIVATE_LAST: |
7e753d9d AC |
658 | r = dhcp_lease_insert_private_option(lease, code, option, len); |
659 | if (r < 0) | |
660 | return r; | |
0339cd77 LP |
661 | |
662 | break; | |
663 | ||
664 | default: | |
f693e9b3 | 665 | log_debug("Ignoring option DHCP option %"PRIu8" while parsing.", code); |
0339cd77 | 666 | break; |
a6cc569e TG |
667 | } |
668 | ||
669 | return 0; | |
670 | } | |
671 | ||
0339cd77 | 672 | int dhcp_lease_insert_private_option(sd_dhcp_lease *lease, uint8_t tag, const void *data, uint8_t len) { |
7e753d9d AC |
673 | struct sd_dhcp_raw_option *cur, *option; |
674 | ||
0339cd77 LP |
675 | assert(lease); |
676 | ||
7e753d9d AC |
677 | LIST_FOREACH(options, cur, lease->private_options) { |
678 | if (tag < cur->tag) | |
679 | break; | |
0339cd77 LP |
680 | if (tag == cur->tag) { |
681 | log_debug("Ignoring duplicate option, tagged %i.", tag); | |
7e753d9d AC |
682 | return 0; |
683 | } | |
684 | } | |
685 | ||
686 | option = new(struct sd_dhcp_raw_option, 1); | |
687 | if (!option) | |
688 | return -ENOMEM; | |
689 | ||
690 | option->tag = tag; | |
691 | option->length = len; | |
692 | option->data = memdup(data, len); | |
693 | if (!option->data) { | |
694 | free(option); | |
695 | return -ENOMEM; | |
696 | } | |
697 | ||
698 | LIST_INSERT_BEFORE(options, lease->private_options, cur, option); | |
7e753d9d AC |
699 | return 0; |
700 | } | |
701 | ||
a6cc569e | 702 | int dhcp_lease_new(sd_dhcp_lease **ret) { |
6e00a806 | 703 | sd_dhcp_lease *lease; |
a6cc569e TG |
704 | |
705 | lease = new0(sd_dhcp_lease, 1); | |
706 | if (!lease) | |
707 | return -ENOMEM; | |
708 | ||
8ddbeaa2 | 709 | lease->router = INADDR_ANY; |
3733eec3 | 710 | lease->n_ref = 1; |
a6cc569e TG |
711 | |
712 | *ret = lease; | |
a6cc569e TG |
713 | return 0; |
714 | } | |
fe8db0c5 | 715 | |
bd91b83e | 716 | int dhcp_lease_save(sd_dhcp_lease *lease, const char *lease_file) { |
fe8db0c5 TG |
717 | _cleanup_free_ char *temp_path = NULL; |
718 | _cleanup_fclose_ FILE *f = NULL; | |
a073309f | 719 | struct sd_dhcp_raw_option *option; |
fe8db0c5 | 720 | struct in_addr address; |
a2ba62c7 | 721 | const struct in_addr *addresses; |
e4735228 | 722 | const void *client_id, *data; |
e43a8393 | 723 | size_t client_id_len, data_len; |
fe8db0c5 TG |
724 | const char *string; |
725 | uint16_t mtu; | |
e1ea665e | 726 | struct sd_dhcp_route *routes; |
0339cd77 | 727 | uint32_t t1, t2, lifetime; |
fe8db0c5 TG |
728 | int r; |
729 | ||
730 | assert(lease); | |
731 | assert(lease_file); | |
732 | ||
fe8db0c5 TG |
733 | r = fopen_temporary(lease_file, &f, &temp_path); |
734 | if (r < 0) | |
dacd6cee | 735 | goto fail; |
fe8db0c5 TG |
736 | |
737 | fchmod(fileno(f), 0644); | |
738 | ||
fe8db0c5 | 739 | fprintf(f, |
0339cd77 | 740 | "# This is private data. Do not parse.\n"); |
fe8db0c5 | 741 | |
0339cd77 LP |
742 | r = sd_dhcp_lease_get_address(lease, &address); |
743 | if (r >= 0) | |
744 | fprintf(f, "ADDRESS=%s\n", inet_ntoa(address)); | |
fe8db0c5 | 745 | |
0339cd77 LP |
746 | r = sd_dhcp_lease_get_netmask(lease, &address); |
747 | if (r >= 0) | |
748 | fprintf(f, "NETMASK=%s\n", inet_ntoa(address)); | |
fe8db0c5 | 749 | |
8ddbeaa2 UTL |
750 | r = sd_dhcp_lease_get_router(lease, &address); |
751 | if (r >= 0) | |
752 | fprintf(f, "ROUTER=%s\n", inet_ntoa(address)); | |
753 | ||
0ad853bc | 754 | r = sd_dhcp_lease_get_server_identifier(lease, &address); |
109731eb | 755 | if (r >= 0) |
0339cd77 | 756 | fprintf(f, "SERVER_ADDRESS=%s\n", inet_ntoa(address)); |
0ad853bc | 757 | |
8e34a618 | 758 | r = sd_dhcp_lease_get_next_server(lease, &address); |
109731eb TG |
759 | if (r >= 0) |
760 | fprintf(f, "NEXT_SERVER=%s\n", inet_ntoa(address)); | |
8e34a618 | 761 | |
0339cd77 LP |
762 | r = sd_dhcp_lease_get_broadcast(lease, &address); |
763 | if (r >= 0) | |
764 | fprintf(f, "BROADCAST=%s\n", inet_ntoa(address)); | |
765 | ||
fe8db0c5 TG |
766 | r = sd_dhcp_lease_get_mtu(lease, &mtu); |
767 | if (r >= 0) | |
768 | fprintf(f, "MTU=%" PRIu16 "\n", mtu); | |
769 | ||
0339cd77 LP |
770 | r = sd_dhcp_lease_get_t1(lease, &t1); |
771 | if (r >= 0) | |
772 | fprintf(f, "T1=%" PRIu32 "\n", t1); | |
773 | ||
774 | r = sd_dhcp_lease_get_t2(lease, &t2); | |
109731eb | 775 | if (r >= 0) |
0339cd77 LP |
776 | fprintf(f, "T2=%" PRIu32 "\n", t2); |
777 | ||
778 | r = sd_dhcp_lease_get_lifetime(lease, &lifetime); | |
779 | if (r >= 0) | |
780 | fprintf(f, "LIFETIME=%" PRIu32 "\n", lifetime); | |
781 | ||
782 | r = sd_dhcp_lease_get_dns(lease, &addresses); | |
783 | if (r > 0) { | |
784 | fputs("DNS=", f); | |
b0e39c82 | 785 | serialize_in_addrs(f, addresses, r); |
0339cd77 LP |
786 | fputs("\n", f); |
787 | } | |
109731eb | 788 | |
a2ba62c7 | 789 | r = sd_dhcp_lease_get_ntp(lease, &addresses); |
0339cd77 LP |
790 | if (r > 0) { |
791 | fputs("NTP=", f); | |
b0e39c82 | 792 | serialize_in_addrs(f, addresses, r); |
0339cd77 LP |
793 | fputs("\n", f); |
794 | } | |
fe8db0c5 TG |
795 | |
796 | r = sd_dhcp_lease_get_domainname(lease, &string); | |
797 | if (r >= 0) | |
798 | fprintf(f, "DOMAINNAME=%s\n", string); | |
799 | ||
800 | r = sd_dhcp_lease_get_hostname(lease, &string); | |
801 | if (r >= 0) | |
802 | fprintf(f, "HOSTNAME=%s\n", string); | |
803 | ||
ce78df79 TG |
804 | r = sd_dhcp_lease_get_root_path(lease, &string); |
805 | if (r >= 0) | |
806 | fprintf(f, "ROOT_PATH=%s\n", string); | |
807 | ||
a2ba62c7 | 808 | r = sd_dhcp_lease_get_routes(lease, &routes); |
0339cd77 | 809 | if (r > 0) |
a2ba62c7 | 810 | serialize_dhcp_routes(f, "ROUTES", routes, r); |
e1ea665e | 811 | |
8eb9058d LP |
812 | r = sd_dhcp_lease_get_timezone(lease, &string); |
813 | if (r >= 0) | |
814 | fprintf(f, "TIMEZONE=%s\n", string); | |
815 | ||
e37f74a6 DW |
816 | r = sd_dhcp_lease_get_client_id(lease, &client_id, &client_id_len); |
817 | if (r >= 0) { | |
818 | _cleanup_free_ char *client_id_hex; | |
819 | ||
dde8bb32 | 820 | client_id_hex = hexmem(client_id, client_id_len); |
e37f74a6 DW |
821 | if (!client_id_hex) { |
822 | r = -ENOMEM; | |
dacd6cee | 823 | goto fail; |
e37f74a6 DW |
824 | } |
825 | fprintf(f, "CLIENTID=%s\n", client_id_hex); | |
826 | } | |
827 | ||
e43a8393 BG |
828 | r = sd_dhcp_lease_get_vendor_specific(lease, &data, &data_len); |
829 | if (r >= 0) { | |
830 | _cleanup_free_ char *option_hex = NULL; | |
831 | ||
832 | option_hex = hexmem(data, data_len); | |
833 | if (!option_hex) { | |
834 | r = -ENOMEM; | |
dacd6cee | 835 | goto fail; |
e43a8393 BG |
836 | } |
837 | fprintf(f, "VENDOR_SPECIFIC=%s\n", option_hex); | |
838 | } | |
839 | ||
a073309f | 840 | LIST_FOREACH(options, option, lease->private_options) { |
30afef87 | 841 | char key[strlen("OPTION_000")+1]; |
0339cd77 | 842 | |
d054f0a4 | 843 | xsprintf(key, "OPTION_%" PRIu8, option->tag); |
a073309f AC |
844 | r = serialize_dhcp_option(f, key, option->data, option->length); |
845 | if (r < 0) | |
846 | goto fail; | |
847 | } | |
848 | ||
dacd6cee LP |
849 | r = fflush_and_check(f); |
850 | if (r < 0) | |
851 | goto fail; | |
fe8db0c5 | 852 | |
dacd6cee | 853 | if (rename(temp_path, lease_file) < 0) { |
fe8db0c5 | 854 | r = -errno; |
dacd6cee | 855 | goto fail; |
fe8db0c5 TG |
856 | } |
857 | ||
dacd6cee LP |
858 | return 0; |
859 | ||
860 | fail: | |
861 | if (temp_path) | |
862 | (void) unlink(temp_path); | |
fe8db0c5 | 863 | |
dacd6cee | 864 | return log_error_errno(r, "Failed to save lease data %s: %m", lease_file); |
fe8db0c5 TG |
865 | } |
866 | ||
bd91b83e | 867 | int dhcp_lease_load(sd_dhcp_lease **ret, const char *lease_file) { |
0339cd77 | 868 | |
4afd3348 | 869 | _cleanup_(sd_dhcp_lease_unrefp) sd_dhcp_lease *lease = NULL; |
0339cd77 LP |
870 | _cleanup_free_ char |
871 | *address = NULL, | |
872 | *router = NULL, | |
873 | *netmask = NULL, | |
874 | *server_address = NULL, | |
875 | *next_server = NULL, | |
876 | *broadcast = NULL, | |
877 | *dns = NULL, | |
878 | *ntp = NULL, | |
879 | *mtu = NULL, | |
880 | *routes = NULL, | |
881 | *client_id_hex = NULL, | |
882 | *vendor_specific_hex = NULL, | |
883 | *lifetime = NULL, | |
884 | *t1 = NULL, | |
885 | *t2 = NULL, | |
886 | *options[DHCP_OPTION_PRIVATE_LAST - DHCP_OPTION_PRIVATE_BASE + 1] = {}; | |
887 | ||
a073309f | 888 | int r, i; |
fe8db0c5 TG |
889 | |
890 | assert(lease_file); | |
891 | assert(ret); | |
892 | ||
893 | r = dhcp_lease_new(&lease); | |
894 | if (r < 0) | |
895 | return r; | |
896 | ||
897 | r = parse_env_file(lease_file, NEWLINE, | |
898 | "ADDRESS", &address, | |
899 | "ROUTER", &router, | |
900 | "NETMASK", &netmask, | |
0ad853bc | 901 | "SERVER_IDENTIFIER", &server_address, |
8e34a618 | 902 | "NEXT_SERVER", &next_server, |
0339cd77 | 903 | "BROADCAST", &broadcast, |
109731eb TG |
904 | "DNS", &dns, |
905 | "NTP", &ntp, | |
fe8db0c5 TG |
906 | "MTU", &mtu, |
907 | "DOMAINNAME", &lease->domainname, | |
908 | "HOSTNAME", &lease->hostname, | |
ce78df79 | 909 | "ROOT_PATH", &lease->root_path, |
e1ea665e | 910 | "ROUTES", &routes, |
e37f74a6 | 911 | "CLIENTID", &client_id_hex, |
8eb9058d | 912 | "TIMEZONE", &lease->timezone, |
e43a8393 | 913 | "VENDOR_SPECIFIC", &vendor_specific_hex, |
0339cd77 LP |
914 | "LIFETIME", &lifetime, |
915 | "T1", &t1, | |
916 | "T2", &t2, | |
a073309f AC |
917 | "OPTION_224", &options[0], |
918 | "OPTION_225", &options[1], | |
919 | "OPTION_226", &options[2], | |
920 | "OPTION_227", &options[3], | |
921 | "OPTION_228", &options[4], | |
922 | "OPTION_229", &options[5], | |
923 | "OPTION_230", &options[6], | |
924 | "OPTION_231", &options[7], | |
925 | "OPTION_232", &options[8], | |
926 | "OPTION_233", &options[9], | |
927 | "OPTION_234", &options[10], | |
928 | "OPTION_235", &options[11], | |
929 | "OPTION_236", &options[12], | |
930 | "OPTION_237", &options[13], | |
931 | "OPTION_238", &options[14], | |
932 | "OPTION_239", &options[15], | |
933 | "OPTION_240", &options[16], | |
934 | "OPTION_241", &options[17], | |
935 | "OPTION_242", &options[18], | |
936 | "OPTION_243", &options[19], | |
937 | "OPTION_244", &options[20], | |
938 | "OPTION_245", &options[21], | |
939 | "OPTION_246", &options[22], | |
940 | "OPTION_247", &options[23], | |
941 | "OPTION_248", &options[24], | |
942 | "OPTION_249", &options[25], | |
943 | "OPTION_250", &options[26], | |
944 | "OPTION_251", &options[27], | |
945 | "OPTION_252", &options[28], | |
946 | "OPTION_253", &options[29], | |
947 | "OPTION_254", &options[30], | |
fe8db0c5 | 948 | NULL); |
fe8db0c5 TG |
949 | if (r < 0) |
950 | return r; | |
951 | ||
0339cd77 LP |
952 | if (address) { |
953 | r = inet_pton(AF_INET, address, &lease->address); | |
954 | if (r <= 0) | |
e26ea7fc | 955 | log_debug("Failed to parse address %s, ignoring.", address); |
0339cd77 | 956 | } |
fe8db0c5 | 957 | |
8ddbeaa2 | 958 | if (router) { |
0339cd77 LP |
959 | r = inet_pton(AF_INET, router, &lease->router); |
960 | if (r <= 0) | |
e26ea7fc | 961 | log_debug("Failed to parse router %s, ignoring.", router); |
8ddbeaa2 | 962 | } |
fe8db0c5 | 963 | |
0339cd77 LP |
964 | if (netmask) { |
965 | r = inet_pton(AF_INET, netmask, &lease->subnet_mask); | |
966 | if (r <= 0) | |
e26ea7fc | 967 | log_debug("Failed to parse netmask %s, ignoring.", netmask); |
0339cd77 LP |
968 | else |
969 | lease->have_subnet_mask = true; | |
970 | } | |
fe8db0c5 | 971 | |
0ad853bc | 972 | if (server_address) { |
0339cd77 LP |
973 | r = inet_pton(AF_INET, server_address, &lease->server_address); |
974 | if (r <= 0) | |
e26ea7fc | 975 | log_debug("Failed to parse server address %s, ignoring.", server_address); |
0ad853bc TG |
976 | } |
977 | ||
8e34a618 | 978 | if (next_server) { |
0339cd77 LP |
979 | r = inet_pton(AF_INET, next_server, &lease->next_server); |
980 | if (r <= 0) | |
e26ea7fc | 981 | log_debug("Failed to parse next server %s, ignoring.", next_server); |
0339cd77 | 982 | } |
8e34a618 | 983 | |
0339cd77 LP |
984 | if (broadcast) { |
985 | r = inet_pton(AF_INET, broadcast, &lease->broadcast); | |
986 | if (r <= 0) | |
e26ea7fc | 987 | log_debug("Failed to parse broadcast address %s, ignoring.", broadcast); |
0339cd77 LP |
988 | else |
989 | lease->have_broadcast = true; | |
8e34a618 TG |
990 | } |
991 | ||
109731eb | 992 | if (dns) { |
a2ba62c7 | 993 | r = deserialize_in_addrs(&lease->dns, dns); |
109731eb | 994 | if (r < 0) |
0339cd77 LP |
995 | log_debug_errno(r, "Failed to deserialize DNS servers %s, ignoring: %m", dns); |
996 | else | |
997 | lease->dns_size = r; | |
109731eb TG |
998 | } |
999 | ||
1000 | if (ntp) { | |
a2ba62c7 | 1001 | r = deserialize_in_addrs(&lease->ntp, ntp); |
109731eb | 1002 | if (r < 0) |
0339cd77 LP |
1003 | log_debug_errno(r, "Failed to deserialize NTP servers %s, ignoring: %m", ntp); |
1004 | else | |
1005 | lease->ntp_size = r; | |
109731eb TG |
1006 | } |
1007 | ||
fe8db0c5 | 1008 | if (mtu) { |
0339cd77 LP |
1009 | r = safe_atou16(mtu, &lease->mtu); |
1010 | if (r < 0) | |
1011 | log_debug_errno(r, "Failed to parse MTU %s, ignoring: %m", mtu); | |
fe8db0c5 TG |
1012 | } |
1013 | ||
e1ea665e | 1014 | if (routes) { |
0339cd77 LP |
1015 | r = deserialize_dhcp_routes( |
1016 | &lease->static_route, | |
1017 | &lease->static_route_size, | |
1018 | &lease->static_route_allocated, | |
1019 | routes); | |
1020 | if (r < 0) | |
1021 | log_debug_errno(r, "Failed to parse DHCP routes %s, ignoring: %m", routes); | |
1022 | } | |
1023 | ||
1024 | if (lifetime) { | |
1025 | r = safe_atou32(lifetime, &lease->lifetime); | |
1026 | if (r < 0) | |
1027 | log_debug_errno(r, "Failed to parse lifetime %s, ignoring: %m", lifetime); | |
1028 | } | |
1029 | ||
1030 | if (t1) { | |
1031 | r = safe_atou32(t1, &lease->t1); | |
1032 | if (r < 0) | |
1033 | log_debug_errno(r, "Failed to parse T1 %s, ignoring: %m", t1); | |
1034 | } | |
1035 | ||
1036 | if (t2) { | |
1037 | r = safe_atou32(t2, &lease->t2); | |
e1ea665e | 1038 | if (r < 0) |
0339cd77 | 1039 | log_debug_errno(r, "Failed to parse T2 %s, ignoring: %m", t2); |
e1ea665e EY |
1040 | } |
1041 | ||
e37f74a6 | 1042 | if (client_id_hex) { |
9b57d9ae | 1043 | r = deserialize_dhcp_option(&lease->client_id, &lease->client_id_len, client_id_hex); |
30494563 | 1044 | if (r < 0) |
0339cd77 | 1045 | log_debug_errno(r, "Failed to parse client ID %s, ignoring: %m", client_id_hex); |
e37f74a6 DW |
1046 | } |
1047 | ||
e43a8393 | 1048 | if (vendor_specific_hex) { |
9b57d9ae | 1049 | r = deserialize_dhcp_option(&lease->vendor_specific, &lease->vendor_specific_len, vendor_specific_hex); |
e43a8393 | 1050 | if (r < 0) |
0339cd77 | 1051 | log_debug_errno(r, "Failed to parse vendor specific data %s, ignoring: %m", vendor_specific_hex); |
e43a8393 BG |
1052 | } |
1053 | ||
a073309f | 1054 | for (i = 0; i <= DHCP_OPTION_PRIVATE_LAST - DHCP_OPTION_PRIVATE_BASE; i++) { |
e4735228 | 1055 | _cleanup_free_ void *data = NULL; |
a073309f AC |
1056 | size_t len; |
1057 | ||
1058 | if (!options[i]) | |
1059 | continue; | |
1060 | ||
1061 | r = deserialize_dhcp_option(&data, &len, options[i]); | |
0339cd77 LP |
1062 | if (r < 0) { |
1063 | log_debug_errno(r, "Failed to parse private DHCP option %s, ignoring: %m", options[i]); | |
1064 | continue; | |
1065 | } | |
a073309f AC |
1066 | |
1067 | r = dhcp_lease_insert_private_option(lease, DHCP_OPTION_PRIVATE_BASE + i, data, len); | |
626be147 | 1068 | if (r < 0) |
a073309f AC |
1069 | return r; |
1070 | } | |
1071 | ||
fe8db0c5 TG |
1072 | *ret = lease; |
1073 | lease = NULL; | |
1074 | ||
1075 | return 0; | |
1076 | } | |
9e64dd72 TG |
1077 | |
1078 | int dhcp_lease_set_default_subnet_mask(sd_dhcp_lease *lease) { | |
0339cd77 | 1079 | struct in_addr address, mask; |
df40eee8 | 1080 | int r; |
9e64dd72 TG |
1081 | |
1082 | assert(lease); | |
9e64dd72 | 1083 | |
0339cd77 LP |
1084 | if (lease->address == 0) |
1085 | return -ENODATA; | |
1086 | ||
df40eee8 | 1087 | address.s_addr = lease->address; |
9e64dd72 TG |
1088 | |
1089 | /* fall back to the default subnet masks based on address class */ | |
df40eee8 TG |
1090 | r = in_addr_default_subnet_mask(&address, &mask); |
1091 | if (r < 0) | |
1092 | return r; | |
9e64dd72 | 1093 | |
df40eee8 | 1094 | lease->subnet_mask = mask.s_addr; |
0339cd77 | 1095 | lease->have_subnet_mask = true; |
9e64dd72 TG |
1096 | |
1097 | return 0; | |
1098 | } | |
e37f74a6 | 1099 | |
0339cd77 | 1100 | int sd_dhcp_lease_get_client_id(sd_dhcp_lease *lease, const void **client_id, size_t *client_id_len) { |
e37f74a6 DW |
1101 | assert_return(lease, -EINVAL); |
1102 | assert_return(client_id, -EINVAL); | |
1103 | assert_return(client_id_len, -EINVAL); | |
1104 | ||
0339cd77 LP |
1105 | if (!lease->client_id) |
1106 | return -ENODATA; | |
1107 | ||
e37f74a6 DW |
1108 | *client_id = lease->client_id; |
1109 | *client_id_len = lease->client_id_len; | |
0339cd77 | 1110 | |
e37f74a6 DW |
1111 | return 0; |
1112 | } | |
1113 | ||
0339cd77 | 1114 | int dhcp_lease_set_client_id(sd_dhcp_lease *lease, const void *client_id, size_t client_id_len) { |
e37f74a6 | 1115 | assert_return(lease, -EINVAL); |
0339cd77 LP |
1116 | assert_return(client_id || client_id_len <= 0, -EINVAL); |
1117 | ||
1118 | if (client_id_len <= 0) | |
1119 | lease->client_id = mfree(lease->client_id); | |
1120 | else { | |
1121 | void *p; | |
e37f74a6 | 1122 | |
0339cd77 LP |
1123 | p = memdup(client_id, client_id_len); |
1124 | if (!p) | |
1125 | return -ENOMEM; | |
e37f74a6 | 1126 | |
0339cd77 LP |
1127 | free(lease->client_id); |
1128 | lease->client_id = p; | |
e37f74a6 DW |
1129 | lease->client_id_len = client_id_len; |
1130 | } | |
1131 | ||
1132 | return 0; | |
1133 | } | |
8eb9058d | 1134 | |
64d6c229 | 1135 | int sd_dhcp_lease_get_timezone(sd_dhcp_lease *lease, const char **tz) { |
8eb9058d | 1136 | assert_return(lease, -EINVAL); |
64d6c229 | 1137 | assert_return(tz, -EINVAL); |
8eb9058d LP |
1138 | |
1139 | if (!lease->timezone) | |
0339cd77 | 1140 | return -ENODATA; |
8eb9058d | 1141 | |
64d6c229 | 1142 | *tz = lease->timezone; |
8eb9058d LP |
1143 | return 0; |
1144 | } |