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Commit | Line | Data |
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53e1b683 | 1 | /* SPDX-License-Identifier: LGPL-2.1+ */ |
a6cc569e | 2 | /*** |
810adae9 | 3 | Copyright © 2013 Intel Corporation. All rights reserved. |
a6cc569e TG |
4 | ***/ |
5 | ||
07630cea | 6 | #include <arpa/inet.h> |
a6cc569e | 7 | #include <errno.h> |
a6cc569e | 8 | #include <stdio.h> |
0d536673 | 9 | #include <stdio_ext.h> |
07630cea LP |
10 | #include <stdlib.h> |
11 | #include <string.h> | |
12 | ||
13 | #include "sd-dhcp-lease.h" | |
a6cc569e | 14 | |
b5efdb8a | 15 | #include "alloc-util.h" |
07630cea LP |
16 | #include "dhcp-lease-internal.h" |
17 | #include "dhcp-protocol.h" | |
18 | #include "dns-domain.h" | |
3ffd4af2 | 19 | #include "fd-util.h" |
fe8db0c5 | 20 | #include "fileio.h" |
b11d6a7b | 21 | #include "hexdecoct.h" |
958b66ea | 22 | #include "hostname-util.h" |
07630cea | 23 | #include "in-addr-util.h" |
0339cd77 | 24 | #include "network-internal.h" |
6bedfcbb | 25 | #include "parse-util.h" |
d054f0a4 | 26 | #include "stdio-util.h" |
b11d6a7b | 27 | #include "string-util.h" |
51517f9e | 28 | #include "strv.h" |
e4de7287 | 29 | #include "tmpfile-util.h" |
07630cea | 30 | #include "unaligned.h" |
a6cc569e TG |
31 | |
32 | int sd_dhcp_lease_get_address(sd_dhcp_lease *lease, struct in_addr *addr) { | |
33 | assert_return(lease, -EINVAL); | |
34 | assert_return(addr, -EINVAL); | |
35 | ||
0339cd77 LP |
36 | if (lease->address == 0) |
37 | return -ENODATA; | |
38 | ||
a6cc569e | 39 | addr->s_addr = lease->address; |
0339cd77 LP |
40 | return 0; |
41 | } | |
a6cc569e | 42 | |
0339cd77 LP |
43 | int sd_dhcp_lease_get_broadcast(sd_dhcp_lease *lease, struct in_addr *addr) { |
44 | assert_return(lease, -EINVAL); | |
45 | assert_return(addr, -EINVAL); | |
46 | ||
47 | if (!lease->have_broadcast) | |
48 | return -ENODATA; | |
49 | ||
50 | addr->s_addr = lease->broadcast; | |
a6cc569e TG |
51 | return 0; |
52 | } | |
53 | ||
68ceb9df PF |
54 | int sd_dhcp_lease_get_lifetime(sd_dhcp_lease *lease, uint32_t *lifetime) { |
55 | assert_return(lease, -EINVAL); | |
1c6eb4e3 | 56 | assert_return(lifetime, -EINVAL); |
68ceb9df | 57 | |
0339cd77 LP |
58 | if (lease->lifetime <= 0) |
59 | return -ENODATA; | |
60 | ||
68ceb9df | 61 | *lifetime = lease->lifetime; |
0339cd77 LP |
62 | return 0; |
63 | } | |
68ceb9df | 64 | |
0339cd77 LP |
65 | int sd_dhcp_lease_get_t1(sd_dhcp_lease *lease, uint32_t *t1) { |
66 | assert_return(lease, -EINVAL); | |
67 | assert_return(t1, -EINVAL); | |
68 | ||
69 | if (lease->t1 <= 0) | |
70 | return -ENODATA; | |
71 | ||
72 | *t1 = lease->t1; | |
73 | return 0; | |
74 | } | |
75 | ||
76 | int sd_dhcp_lease_get_t2(sd_dhcp_lease *lease, uint32_t *t2) { | |
77 | assert_return(lease, -EINVAL); | |
78 | assert_return(t2, -EINVAL); | |
79 | ||
80 | if (lease->t2 <= 0) | |
81 | return -ENODATA; | |
82 | ||
83 | *t2 = lease->t2; | |
68ceb9df PF |
84 | return 0; |
85 | } | |
86 | ||
a6cc569e TG |
87 | int sd_dhcp_lease_get_mtu(sd_dhcp_lease *lease, uint16_t *mtu) { |
88 | assert_return(lease, -EINVAL); | |
89 | assert_return(mtu, -EINVAL); | |
90 | ||
0339cd77 LP |
91 | if (lease->mtu <= 0) |
92 | return -ENODATA; | |
a6cc569e | 93 | |
0339cd77 | 94 | *mtu = lease->mtu; |
a6cc569e TG |
95 | return 0; |
96 | } | |
97 | ||
a2ba62c7 | 98 | int sd_dhcp_lease_get_dns(sd_dhcp_lease *lease, const struct in_addr **addr) { |
a6cc569e TG |
99 | assert_return(lease, -EINVAL); |
100 | assert_return(addr, -EINVAL); | |
a6cc569e | 101 | |
0339cd77 LP |
102 | if (lease->dns_size <= 0) |
103 | return -ENODATA; | |
a6cc569e | 104 | |
0339cd77 LP |
105 | *addr = lease->dns; |
106 | return (int) lease->dns_size; | |
a6cc569e TG |
107 | } |
108 | ||
a2ba62c7 | 109 | int sd_dhcp_lease_get_ntp(sd_dhcp_lease *lease, const struct in_addr **addr) { |
46844696 TG |
110 | assert_return(lease, -EINVAL); |
111 | assert_return(addr, -EINVAL); | |
46844696 | 112 | |
0339cd77 LP |
113 | if (lease->ntp_size <= 0) |
114 | return -ENODATA; | |
46844696 | 115 | |
0339cd77 LP |
116 | *addr = lease->ntp; |
117 | return (int) lease->ntp_size; | |
46844696 TG |
118 | } |
119 | ||
a6cc569e TG |
120 | int sd_dhcp_lease_get_domainname(sd_dhcp_lease *lease, const char **domainname) { |
121 | assert_return(lease, -EINVAL); | |
122 | assert_return(domainname, -EINVAL); | |
123 | ||
0339cd77 LP |
124 | if (!lease->domainname) |
125 | return -ENODATA; | |
a6cc569e | 126 | |
0339cd77 | 127 | *domainname = lease->domainname; |
a6cc569e TG |
128 | return 0; |
129 | } | |
130 | ||
131 | int sd_dhcp_lease_get_hostname(sd_dhcp_lease *lease, const char **hostname) { | |
132 | assert_return(lease, -EINVAL); | |
133 | assert_return(hostname, -EINVAL); | |
134 | ||
0339cd77 LP |
135 | if (!lease->hostname) |
136 | return -ENODATA; | |
a6cc569e | 137 | |
0339cd77 | 138 | *hostname = lease->hostname; |
a6cc569e TG |
139 | return 0; |
140 | } | |
141 | ||
ce78df79 TG |
142 | int sd_dhcp_lease_get_root_path(sd_dhcp_lease *lease, const char **root_path) { |
143 | assert_return(lease, -EINVAL); | |
144 | assert_return(root_path, -EINVAL); | |
145 | ||
0339cd77 LP |
146 | if (!lease->root_path) |
147 | return -ENODATA; | |
ce78df79 | 148 | |
0339cd77 | 149 | *root_path = lease->root_path; |
ce78df79 TG |
150 | return 0; |
151 | } | |
152 | ||
a6cc569e TG |
153 | int sd_dhcp_lease_get_router(sd_dhcp_lease *lease, struct in_addr *addr) { |
154 | assert_return(lease, -EINVAL); | |
155 | assert_return(addr, -EINVAL); | |
156 | ||
0339cd77 LP |
157 | if (lease->router == 0) |
158 | return -ENODATA; | |
a6cc569e | 159 | |
0339cd77 | 160 | addr->s_addr = lease->router; |
a6cc569e TG |
161 | return 0; |
162 | } | |
163 | ||
164 | int sd_dhcp_lease_get_netmask(sd_dhcp_lease *lease, struct in_addr *addr) { | |
165 | assert_return(lease, -EINVAL); | |
166 | assert_return(addr, -EINVAL); | |
167 | ||
0339cd77 LP |
168 | if (!lease->have_subnet_mask) |
169 | return -ENODATA; | |
a6cc569e | 170 | |
0339cd77 | 171 | addr->s_addr = lease->subnet_mask; |
a6cc569e TG |
172 | return 0; |
173 | } | |
174 | ||
0ad853bc TG |
175 | int sd_dhcp_lease_get_server_identifier(sd_dhcp_lease *lease, struct in_addr *addr) { |
176 | assert_return(lease, -EINVAL); | |
177 | assert_return(addr, -EINVAL); | |
178 | ||
0339cd77 LP |
179 | if (lease->server_address == 0) |
180 | return -ENODATA; | |
0ad853bc | 181 | |
0339cd77 | 182 | addr->s_addr = lease->server_address; |
0ad853bc TG |
183 | return 0; |
184 | } | |
185 | ||
8e34a618 TG |
186 | int sd_dhcp_lease_get_next_server(sd_dhcp_lease *lease, struct in_addr *addr) { |
187 | assert_return(lease, -EINVAL); | |
188 | assert_return(addr, -EINVAL); | |
189 | ||
0339cd77 LP |
190 | if (lease->next_server == 0) |
191 | return -ENODATA; | |
8e34a618 | 192 | |
0339cd77 | 193 | addr->s_addr = lease->next_server; |
8e34a618 TG |
194 | return 0; |
195 | } | |
196 | ||
f8693fc7 BG |
197 | /* |
198 | * The returned routes array must be freed by the caller. | |
199 | * Route objects have the same lifetime of the lease and must not be freed. | |
200 | */ | |
201 | int sd_dhcp_lease_get_routes(sd_dhcp_lease *lease, sd_dhcp_route ***routes) { | |
202 | sd_dhcp_route **ret; | |
203 | unsigned i; | |
204 | ||
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 | |
f8693fc7 BG |
211 | ret = new(sd_dhcp_route *, lease->static_route_size); |
212 | if (!ret) | |
213 | return -ENOMEM; | |
214 | ||
215 | for (i = 0; i < lease->static_route_size; i++) | |
216 | ret[i] = &lease->static_route[i]; | |
217 | ||
218 | *routes = ret; | |
0339cd77 | 219 | return (int) lease->static_route_size; |
e1ea665e EY |
220 | } |
221 | ||
b85bc551 | 222 | int sd_dhcp_lease_get_search_domains(sd_dhcp_lease *lease, char ***domains) { |
da6053d0 | 223 | size_t r; |
b85bc551 DW |
224 | |
225 | assert_return(lease, -EINVAL); | |
226 | assert_return(domains, -EINVAL); | |
227 | ||
228 | r = strv_length(lease->search_domains); | |
229 | if (r > 0) { | |
230 | *domains = lease->search_domains; | |
231 | return (int) r; | |
232 | } | |
233 | ||
234 | return -ENODATA; | |
235 | } | |
236 | ||
0339cd77 | 237 | int sd_dhcp_lease_get_vendor_specific(sd_dhcp_lease *lease, const void **data, size_t *data_len) { |
e43a8393 BG |
238 | assert_return(lease, -EINVAL); |
239 | assert_return(data, -EINVAL); | |
240 | assert_return(data_len, -EINVAL); | |
241 | ||
0339cd77 LP |
242 | if (lease->vendor_specific_len <= 0) |
243 | return -ENODATA; | |
e43a8393 BG |
244 | |
245 | *data = lease->vendor_specific; | |
246 | *data_len = lease->vendor_specific_len; | |
e43a8393 BG |
247 | return 0; |
248 | } | |
249 | ||
8301aa0b YW |
250 | static sd_dhcp_lease *dhcp_lease_free(sd_dhcp_lease *lease) { |
251 | assert(lease); | |
3733eec3 LP |
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 | ||
e2975f85 YW |
262 | free(lease->root_path); |
263 | free(lease->timezone); | |
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); | |
b85bc551 | 271 | strv_free(lease->search_domains); |
6b430fdb | 272 | return mfree(lease); |
a6cc569e TG |
273 | } |
274 | ||
8301aa0b YW |
275 | DEFINE_TRIVIAL_REF_UNREF_FUNC(sd_dhcp_lease, sd_dhcp_lease, dhcp_lease_free); |
276 | ||
0339cd77 | 277 | static int lease_parse_u32(const uint8_t *option, size_t len, uint32_t *ret, uint32_t min) { |
e140ae58 TG |
278 | assert(option); |
279 | assert(ret); | |
280 | ||
0339cd77 LP |
281 | if (len != 4) |
282 | return -EINVAL; | |
e140ae58 | 283 | |
0339cd77 LP |
284 | *ret = unaligned_read_be32((be32_t*) option); |
285 | if (*ret < min) | |
286 | *ret = min; | |
e140ae58 | 287 | |
0339cd77 | 288 | return 0; |
e140ae58 TG |
289 | } |
290 | ||
0339cd77 | 291 | static int lease_parse_u16(const uint8_t *option, size_t len, uint16_t *ret, uint16_t min) { |
e140ae58 TG |
292 | assert(option); |
293 | assert(ret); | |
294 | ||
0339cd77 LP |
295 | if (len != 2) |
296 | return -EINVAL; | |
e140ae58 | 297 | |
0339cd77 LP |
298 | *ret = unaligned_read_be16((be16_t*) option); |
299 | if (*ret < min) | |
300 | *ret = min; | |
f5c0c00f | 301 | |
0339cd77 | 302 | return 0; |
f5c0c00f TG |
303 | } |
304 | ||
0339cd77 | 305 | static int lease_parse_be32(const uint8_t *option, size_t len, be32_t *ret) { |
f5c0c00f TG |
306 | assert(option); |
307 | assert(ret); | |
308 | ||
0339cd77 LP |
309 | if (len != 4) |
310 | return -EINVAL; | |
f5c0c00f | 311 | |
0339cd77 LP |
312 | memcpy(ret, option, 4); |
313 | return 0; | |
f5c0c00f TG |
314 | } |
315 | ||
e140ae58 TG |
316 | static int lease_parse_string(const uint8_t *option, size_t len, char **ret) { |
317 | assert(option); | |
318 | assert(ret); | |
319 | ||
0339cd77 LP |
320 | if (len <= 0) |
321 | *ret = mfree(*ret); | |
322 | else { | |
e140ae58 TG |
323 | char *string; |
324 | ||
e989fd9b LP |
325 | /* |
326 | * One trailing NUL byte is OK, we don't mind. See: | |
327 | * https://github.com/systemd/systemd/issues/1337 | |
328 | */ | |
329 | if (memchr(option, 0, len - 1)) | |
43f447b1 LP |
330 | return -EINVAL; |
331 | ||
e989fd9b | 332 | string = strndup((const char *) option, len); |
e140ae58 | 333 | if (!string) |
43f447b1 | 334 | return -ENOMEM; |
e140ae58 | 335 | |
09348d40 | 336 | free_and_replace(*ret, string); |
0339cd77 | 337 | } |
e140ae58 TG |
338 | |
339 | return 0; | |
340 | } | |
341 | ||
978c6477 LP |
342 | static int lease_parse_domain(const uint8_t *option, size_t len, char **ret) { |
343 | _cleanup_free_ char *name = NULL, *normalized = NULL; | |
344 | int r; | |
345 | ||
346 | assert(option); | |
347 | assert(ret); | |
348 | ||
349 | r = lease_parse_string(option, len, &name); | |
350 | if (r < 0) | |
351 | return r; | |
352 | if (!name) { | |
353 | *ret = mfree(*ret); | |
354 | return 0; | |
355 | } | |
356 | ||
357 | r = dns_name_normalize(name, &normalized); | |
358 | if (r < 0) | |
359 | return r; | |
360 | ||
361 | if (is_localhost(normalized)) | |
362 | return -EINVAL; | |
363 | ||
364 | if (dns_name_is_root(normalized)) | |
365 | return -EINVAL; | |
366 | ||
f9ecfd3b | 367 | free_and_replace(*ret, normalized); |
978c6477 LP |
368 | |
369 | return 0; | |
370 | } | |
371 | ||
d9ec2e63 LP |
372 | static void filter_bogus_addresses(struct in_addr *addresses, size_t *n) { |
373 | size_t i, j; | |
374 | ||
375 | /* Silently filter DNS/NTP servers supplied to us that do not make outside of the local scope. */ | |
376 | ||
377 | for (i = 0, j = 0; i < *n; i ++) { | |
378 | ||
379 | if (in4_addr_is_null(addresses+i) || | |
380 | in4_addr_is_localhost(addresses+i)) | |
381 | continue; | |
382 | ||
383 | addresses[j++] = addresses[i]; | |
384 | } | |
385 | ||
386 | *n = j; | |
387 | } | |
388 | ||
0339cd77 | 389 | static int lease_parse_in_addrs(const uint8_t *option, size_t len, struct in_addr **ret, size_t *n_ret) { |
e140ae58 TG |
390 | assert(option); |
391 | assert(ret); | |
0339cd77 | 392 | assert(n_ret); |
e140ae58 | 393 | |
0339cd77 LP |
394 | if (len <= 0) { |
395 | *ret = mfree(*ret); | |
396 | *n_ret = 0; | |
397 | } else { | |
398 | size_t n_addresses; | |
e140ae58 TG |
399 | struct in_addr *addresses; |
400 | ||
0339cd77 LP |
401 | if (len % 4 != 0) |
402 | return -EINVAL; | |
e140ae58 | 403 | |
0339cd77 LP |
404 | n_addresses = len / 4; |
405 | ||
406 | addresses = newdup(struct in_addr, option, n_addresses); | |
e140ae58 TG |
407 | if (!addresses) |
408 | return -ENOMEM; | |
409 | ||
d9ec2e63 LP |
410 | filter_bogus_addresses(addresses, &n_addresses); |
411 | ||
e140ae58 TG |
412 | free(*ret); |
413 | *ret = addresses; | |
0339cd77 | 414 | *n_ret = n_addresses; |
e140ae58 TG |
415 | } |
416 | ||
417 | return 0; | |
418 | } | |
419 | ||
0339cd77 LP |
420 | static int lease_parse_routes( |
421 | const uint8_t *option, size_t len, | |
422 | struct sd_dhcp_route **routes, size_t *routes_size, size_t *routes_allocated) { | |
e1ea665e EY |
423 | |
424 | struct in_addr addr; | |
425 | ||
0339cd77 | 426 | assert(option || len <= 0); |
e1ea665e EY |
427 | assert(routes); |
428 | assert(routes_size); | |
429 | assert(routes_allocated); | |
430 | ||
0339cd77 | 431 | if (len <= 0) |
e1ea665e EY |
432 | return 0; |
433 | ||
434 | if (len % 8 != 0) | |
435 | return -EINVAL; | |
436 | ||
437 | if (!GREEDY_REALLOC(*routes, *routes_allocated, *routes_size + (len / 8))) | |
438 | return -ENOMEM; | |
439 | ||
440 | while (len >= 8) { | |
441 | struct sd_dhcp_route *route = *routes + *routes_size; | |
1caa12d0 | 442 | int r; |
e1ea665e | 443 | |
8cdc46e7 | 444 | route->option = SD_DHCP_OPTION_STATIC_ROUTE; |
5a941f5f | 445 | r = in4_addr_default_prefixlen((struct in_addr*) option, &route->dst_prefixlen); |
1caa12d0 | 446 | if (r < 0) { |
0339cd77 | 447 | log_debug("Failed to determine destination prefix length from class based IP, ignoring"); |
e1ea665e EY |
448 | continue; |
449 | } | |
450 | ||
0339cd77 | 451 | assert_se(lease_parse_be32(option, 4, &addr.s_addr) >= 0); |
e1ea665e EY |
452 | route->dst_addr = inet_makeaddr(inet_netof(addr), 0); |
453 | option += 4; | |
454 | ||
0339cd77 | 455 | assert_se(lease_parse_be32(option, 4, &route->gw_addr.s_addr) >= 0); |
e1ea665e EY |
456 | option += 4; |
457 | ||
458 | len -= 8; | |
459 | (*routes_size)++; | |
460 | } | |
461 | ||
462 | return 0; | |
463 | } | |
464 | ||
465 | /* parses RFC3442 Classless Static Route Option */ | |
0339cd77 LP |
466 | static int lease_parse_classless_routes( |
467 | const uint8_t *option, size_t len, | |
468 | struct sd_dhcp_route **routes, size_t *routes_size, size_t *routes_allocated) { | |
e1ea665e | 469 | |
0339cd77 | 470 | assert(option || len <= 0); |
e1ea665e EY |
471 | assert(routes); |
472 | assert(routes_size); | |
473 | assert(routes_allocated); | |
474 | ||
0339cd77 LP |
475 | if (len <= 0) |
476 | return 0; | |
477 | ||
e1ea665e EY |
478 | /* option format: (subnet-mask-width significant-subnet-octets gateway-ip)* */ |
479 | ||
480 | while (len > 0) { | |
481 | uint8_t dst_octets; | |
482 | struct sd_dhcp_route *route; | |
483 | ||
484 | if (!GREEDY_REALLOC(*routes, *routes_allocated, *routes_size + 1)) | |
0339cd77 | 485 | return -ENOMEM; |
e1ea665e EY |
486 | |
487 | route = *routes + *routes_size; | |
8cdc46e7 | 488 | route->option = SD_DHCP_OPTION_CLASSLESS_STATIC_ROUTE; |
e1ea665e EY |
489 | |
490 | dst_octets = (*option == 0 ? 0 : ((*option - 1) / 8) + 1); | |
491 | route->dst_prefixlen = *option; | |
492 | option++; | |
493 | len--; | |
494 | ||
495 | /* can't have more than 4 octets in IPv4 */ | |
496 | if (dst_octets > 4 || len < dst_octets) | |
497 | return -EINVAL; | |
498 | ||
499 | route->dst_addr.s_addr = 0; | |
500 | memcpy(&route->dst_addr.s_addr, option, dst_octets); | |
501 | option += dst_octets; | |
502 | len -= dst_octets; | |
503 | ||
504 | if (len < 4) | |
505 | return -EINVAL; | |
506 | ||
b14fff6e | 507 | assert_se(lease_parse_be32(option, 4, &route->gw_addr.s_addr) >= 0); |
e1ea665e EY |
508 | option += 4; |
509 | len -= 4; | |
510 | ||
511 | (*routes_size)++; | |
512 | } | |
513 | ||
514 | return 0; | |
515 | } | |
516 | ||
e4735228 | 517 | int dhcp_lease_parse_options(uint8_t code, uint8_t len, const void *option, void *userdata) { |
2d03c0b8 | 518 | sd_dhcp_lease *lease = userdata; |
e140ae58 TG |
519 | int r; |
520 | ||
521 | assert(lease); | |
a6cc569e TG |
522 | |
523 | switch(code) { | |
524 | ||
22805d92 | 525 | case SD_DHCP_OPTION_IP_ADDRESS_LEASE_TIME: |
0339cd77 LP |
526 | r = lease_parse_u32(option, len, &lease->lifetime, 1); |
527 | if (r < 0) | |
528 | log_debug_errno(r, "Failed to parse lease time, ignoring: %m"); | |
529 | ||
a6cc569e TG |
530 | break; |
531 | ||
22805d92 | 532 | case SD_DHCP_OPTION_SERVER_IDENTIFIER: |
0339cd77 LP |
533 | r = lease_parse_be32(option, len, &lease->server_address); |
534 | if (r < 0) | |
535 | log_debug_errno(r, "Failed to parse server identifier, ignoring: %m"); | |
536 | ||
a6cc569e TG |
537 | break; |
538 | ||
22805d92 | 539 | case SD_DHCP_OPTION_SUBNET_MASK: |
0339cd77 LP |
540 | r = lease_parse_be32(option, len, &lease->subnet_mask); |
541 | if (r < 0) | |
542 | log_debug_errno(r, "Failed to parse subnet mask, ignoring: %m"); | |
543 | else | |
544 | lease->have_subnet_mask = true; | |
a6cc569e TG |
545 | break; |
546 | ||
22805d92 | 547 | case SD_DHCP_OPTION_BROADCAST: |
0339cd77 LP |
548 | r = lease_parse_be32(option, len, &lease->broadcast); |
549 | if (r < 0) | |
550 | log_debug_errno(r, "Failed to parse broadcast address, ignoring: %m"); | |
551 | else | |
552 | lease->have_broadcast = true; | |
f5c0c00f TG |
553 | break; |
554 | ||
22805d92 | 555 | case SD_DHCP_OPTION_ROUTER: |
0339cd77 LP |
556 | if (len >= 4) { |
557 | r = lease_parse_be32(option, 4, &lease->router); | |
558 | if (r < 0) | |
559 | log_debug_errno(r, "Failed to parse router address, ignoring: %m"); | |
560 | } | |
a6cc569e TG |
561 | break; |
562 | ||
22805d92 | 563 | case SD_DHCP_OPTION_DOMAIN_NAME_SERVER: |
0339cd77 LP |
564 | r = lease_parse_in_addrs(option, len, &lease->dns, &lease->dns_size); |
565 | if (r < 0) | |
566 | log_debug_errno(r, "Failed to parse DNS server, ignoring: %m"); | |
a6cc569e TG |
567 | break; |
568 | ||
22805d92 | 569 | case SD_DHCP_OPTION_NTP_SERVER: |
0339cd77 LP |
570 | r = lease_parse_in_addrs(option, len, &lease->ntp, &lease->ntp_size); |
571 | if (r < 0) | |
572 | log_debug_errno(r, "Failed to parse NTP server, ignoring: %m"); | |
f5c0c00f TG |
573 | break; |
574 | ||
22805d92 | 575 | case SD_DHCP_OPTION_STATIC_ROUTE: |
0339cd77 LP |
576 | r = lease_parse_routes(option, len, &lease->static_route, &lease->static_route_size, &lease->static_route_allocated); |
577 | if (r < 0) | |
578 | log_debug_errno(r, "Failed to parse static routes, ignoring: %m"); | |
f5c0c00f TG |
579 | break; |
580 | ||
22805d92 | 581 | case SD_DHCP_OPTION_INTERFACE_MTU: |
0339cd77 LP |
582 | r = lease_parse_u16(option, len, &lease->mtu, 68); |
583 | if (r < 0) | |
584 | log_debug_errno(r, "Failed to parse MTU, ignoring: %m"); | |
955d99ed | 585 | if (lease->mtu < DHCP_DEFAULT_MIN_SIZE) { |
4dd53da9 | 586 | log_debug("MTU value of %" PRIu16 " too small. Using default MTU value of %d instead.", lease->mtu, DHCP_DEFAULT_MIN_SIZE); |
955d99ed MG |
587 | lease->mtu = DHCP_DEFAULT_MIN_SIZE; |
588 | } | |
589 | ||
f5c0c00f TG |
590 | break; |
591 | ||
978c6477 LP |
592 | case SD_DHCP_OPTION_DOMAIN_NAME: |
593 | r = lease_parse_domain(option, len, &lease->domainname); | |
0339cd77 LP |
594 | if (r < 0) { |
595 | log_debug_errno(r, "Failed to parse domain name, ignoring: %m"); | |
596 | return 0; | |
597 | } | |
a6cc569e | 598 | |
784d9b9c | 599 | break; |
784d9b9c | 600 | |
b85bc551 DW |
601 | case SD_DHCP_OPTION_DOMAIN_SEARCH_LIST: |
602 | r = dhcp_lease_parse_search_domains(option, len, &lease->search_domains); | |
603 | if (r < 0) | |
604 | log_debug_errno(r, "Failed to parse Domain Search List, ignoring: %m"); | |
605 | break; | |
606 | ||
978c6477 LP |
607 | case SD_DHCP_OPTION_HOST_NAME: |
608 | r = lease_parse_domain(option, len, &lease->hostname); | |
0339cd77 LP |
609 | if (r < 0) { |
610 | log_debug_errno(r, "Failed to parse host name, ignoring: %m"); | |
611 | return 0; | |
612 | } | |
a6cc569e | 613 | |
784d9b9c | 614 | break; |
ce78df79 | 615 | |
22805d92 | 616 | case SD_DHCP_OPTION_ROOT_PATH: |
0339cd77 LP |
617 | r = lease_parse_string(option, len, &lease->root_path); |
618 | if (r < 0) | |
619 | log_debug_errno(r, "Failed to parse root path, ignoring: %m"); | |
620 | break; | |
ce78df79 | 621 | |
22805d92 | 622 | case SD_DHCP_OPTION_RENEWAL_T1_TIME: |
0339cd77 LP |
623 | r = lease_parse_u32(option, len, &lease->t1, 1); |
624 | if (r < 0) | |
625 | log_debug_errno(r, "Failed to parse T1 time, ignoring: %m"); | |
a6cc569e TG |
626 | break; |
627 | ||
22805d92 | 628 | case SD_DHCP_OPTION_REBINDING_T2_TIME: |
0339cd77 LP |
629 | r = lease_parse_u32(option, len, &lease->t2, 1); |
630 | if (r < 0) | |
631 | log_debug_errno(r, "Failed to parse T2 time, ignoring: %m"); | |
a6cc569e | 632 | break; |
e1ea665e | 633 | |
22805d92 | 634 | case SD_DHCP_OPTION_CLASSLESS_STATIC_ROUTE: |
0339cd77 | 635 | r = lease_parse_classless_routes( |
2d03c0b8 LP |
636 | option, len, |
637 | &lease->static_route, | |
638 | &lease->static_route_size, | |
639 | &lease->static_route_allocated); | |
0339cd77 LP |
640 | if (r < 0) |
641 | log_debug_errno(r, "Failed to parse classless routes, ignoring: %m"); | |
642 | break; | |
e43a8393 | 643 | |
22805d92 | 644 | case SD_DHCP_OPTION_NEW_TZDB_TIMEZONE: { |
8eb9058d LP |
645 | _cleanup_free_ char *tz = NULL; |
646 | ||
647 | r = lease_parse_string(option, len, &tz); | |
0339cd77 LP |
648 | if (r < 0) { |
649 | log_debug_errno(r, "Failed to parse timezone option, ignoring: %m"); | |
650 | return 0; | |
651 | } | |
8eb9058d | 652 | |
089fb865 | 653 | if (!timezone_is_valid(tz, LOG_DEBUG)) { |
0339cd77 LP |
654 | log_debug_errno(r, "Timezone is not valid, ignoring: %m"); |
655 | return 0; | |
656 | } | |
8eb9058d | 657 | |
f9ecfd3b | 658 | free_and_replace(lease->timezone, tz); |
0339cd77 | 659 | |
8eb9058d LP |
660 | break; |
661 | } | |
662 | ||
22805d92 | 663 | case SD_DHCP_OPTION_VENDOR_SPECIFIC: |
2d03c0b8 | 664 | |
0339cd77 LP |
665 | if (len <= 0) |
666 | lease->vendor_specific = mfree(lease->vendor_specific); | |
667 | else { | |
668 | void *p; | |
669 | ||
670 | p = memdup(option, len); | |
671 | if (!p) | |
e43a8393 | 672 | return -ENOMEM; |
e43a8393 | 673 | |
0339cd77 LP |
674 | free(lease->vendor_specific); |
675 | lease->vendor_specific = p; | |
676 | } | |
7e753d9d | 677 | |
0339cd77 LP |
678 | lease->vendor_specific_len = len; |
679 | break; | |
7e753d9d | 680 | |
22805d92 | 681 | case SD_DHCP_OPTION_PRIVATE_BASE ... SD_DHCP_OPTION_PRIVATE_LAST: |
7e753d9d AC |
682 | r = dhcp_lease_insert_private_option(lease, code, option, len); |
683 | if (r < 0) | |
684 | return r; | |
0339cd77 LP |
685 | |
686 | break; | |
687 | ||
688 | default: | |
f693e9b3 | 689 | log_debug("Ignoring option DHCP option %"PRIu8" while parsing.", code); |
0339cd77 | 690 | break; |
a6cc569e TG |
691 | } |
692 | ||
693 | return 0; | |
694 | } | |
695 | ||
b85bc551 DW |
696 | /* Parses compressed domain names. */ |
697 | int dhcp_lease_parse_search_domains(const uint8_t *option, size_t len, char ***domains) { | |
698 | _cleanup_strv_free_ char **names = NULL; | |
699 | size_t pos = 0, cnt = 0; | |
700 | int r; | |
701 | ||
702 | assert(domains); | |
703 | assert_return(option && len > 0, -ENODATA); | |
704 | ||
705 | while (pos < len) { | |
706 | _cleanup_free_ char *name = NULL; | |
707 | size_t n = 0, allocated = 0; | |
708 | size_t jump_barrier = pos, next_chunk = 0; | |
709 | bool first = true; | |
710 | ||
711 | for (;;) { | |
712 | uint8_t c; | |
713 | c = option[pos++]; | |
714 | ||
715 | if (c == 0) { | |
716 | /* End of name */ | |
717 | break; | |
718 | } else if (c <= 63) { | |
719 | const char *label; | |
720 | ||
721 | /* Literal label */ | |
722 | label = (const char*) (option + pos); | |
723 | pos += c; | |
724 | if (pos >= len) | |
725 | return -EBADMSG; | |
726 | ||
727 | if (!GREEDY_REALLOC(name, allocated, n + !first + DNS_LABEL_ESCAPED_MAX)) | |
728 | return -ENOMEM; | |
729 | ||
730 | if (first) | |
731 | first = false; | |
732 | else | |
733 | name[n++] = '.'; | |
734 | ||
735 | r = dns_label_escape(label, c, name + n, DNS_LABEL_ESCAPED_MAX); | |
736 | if (r < 0) | |
737 | return r; | |
738 | ||
739 | n += r; | |
740 | } else if ((c & 0xc0) == 0xc0) { | |
741 | /* Pointer */ | |
742 | ||
743 | uint8_t d; | |
744 | uint16_t ptr; | |
745 | ||
746 | if (pos >= len) | |
747 | return -EBADMSG; | |
748 | ||
749 | d = option[pos++]; | |
750 | ptr = (uint16_t) (c & ~0xc0) << 8 | (uint16_t) d; | |
751 | ||
752 | /* Jumps are limited to a "prior occurrence" (RFC-1035 4.1.4) */ | |
753 | if (ptr >= jump_barrier) | |
754 | return -EBADMSG; | |
755 | jump_barrier = ptr; | |
756 | ||
757 | /* Save current location so we don't end up re-parsing what's parsed so far. */ | |
758 | if (next_chunk == 0) | |
759 | next_chunk = pos; | |
760 | ||
761 | pos = ptr; | |
762 | } else | |
763 | return -EBADMSG; | |
764 | } | |
765 | ||
766 | if (!GREEDY_REALLOC(name, allocated, n + 1)) | |
767 | return -ENOMEM; | |
768 | name[n] = 0; | |
769 | ||
770 | r = strv_extend(&names, name); | |
771 | if (r < 0) | |
772 | return r; | |
773 | ||
774 | cnt++; | |
775 | ||
776 | if (next_chunk != 0) | |
777 | pos = next_chunk; | |
778 | } | |
779 | ||
ae2a15bc | 780 | *domains = TAKE_PTR(names); |
b85bc551 DW |
781 | |
782 | return cnt; | |
783 | } | |
784 | ||
0339cd77 | 785 | int dhcp_lease_insert_private_option(sd_dhcp_lease *lease, uint8_t tag, const void *data, uint8_t len) { |
7e753d9d AC |
786 | struct sd_dhcp_raw_option *cur, *option; |
787 | ||
0339cd77 LP |
788 | assert(lease); |
789 | ||
7e753d9d AC |
790 | LIST_FOREACH(options, cur, lease->private_options) { |
791 | if (tag < cur->tag) | |
792 | break; | |
0339cd77 LP |
793 | if (tag == cur->tag) { |
794 | log_debug("Ignoring duplicate option, tagged %i.", tag); | |
7e753d9d AC |
795 | return 0; |
796 | } | |
797 | } | |
798 | ||
799 | option = new(struct sd_dhcp_raw_option, 1); | |
800 | if (!option) | |
801 | return -ENOMEM; | |
802 | ||
803 | option->tag = tag; | |
804 | option->length = len; | |
805 | option->data = memdup(data, len); | |
806 | if (!option->data) { | |
807 | free(option); | |
808 | return -ENOMEM; | |
809 | } | |
810 | ||
811 | LIST_INSERT_BEFORE(options, lease->private_options, cur, option); | |
7e753d9d AC |
812 | return 0; |
813 | } | |
814 | ||
a6cc569e | 815 | int dhcp_lease_new(sd_dhcp_lease **ret) { |
6e00a806 | 816 | sd_dhcp_lease *lease; |
a6cc569e TG |
817 | |
818 | lease = new0(sd_dhcp_lease, 1); | |
819 | if (!lease) | |
820 | return -ENOMEM; | |
821 | ||
8ddbeaa2 | 822 | lease->router = INADDR_ANY; |
3733eec3 | 823 | lease->n_ref = 1; |
a6cc569e TG |
824 | |
825 | *ret = lease; | |
a6cc569e TG |
826 | return 0; |
827 | } | |
fe8db0c5 | 828 | |
bd91b83e | 829 | int dhcp_lease_save(sd_dhcp_lease *lease, const char *lease_file) { |
fe8db0c5 TG |
830 | _cleanup_free_ char *temp_path = NULL; |
831 | _cleanup_fclose_ FILE *f = NULL; | |
a073309f | 832 | struct sd_dhcp_raw_option *option; |
fe8db0c5 | 833 | struct in_addr address; |
a2ba62c7 | 834 | const struct in_addr *addresses; |
e4735228 | 835 | const void *client_id, *data; |
e43a8393 | 836 | size_t client_id_len, data_len; |
fe8db0c5 TG |
837 | const char *string; |
838 | uint16_t mtu; | |
f8693fc7 | 839 | _cleanup_free_ sd_dhcp_route **routes = NULL; |
b85bc551 | 840 | char **search_domains = NULL; |
0339cd77 | 841 | uint32_t t1, t2, lifetime; |
fe8db0c5 TG |
842 | int r; |
843 | ||
844 | assert(lease); | |
845 | assert(lease_file); | |
846 | ||
fe8db0c5 TG |
847 | r = fopen_temporary(lease_file, &f, &temp_path); |
848 | if (r < 0) | |
dacd6cee | 849 | goto fail; |
fe8db0c5 | 850 | |
0d536673 LP |
851 | (void) __fsetlocking(f, FSETLOCKING_BYCALLER); |
852 | (void) fchmod(fileno(f), 0644); | |
fe8db0c5 | 853 | |
fe8db0c5 | 854 | fprintf(f, |
0339cd77 | 855 | "# This is private data. Do not parse.\n"); |
fe8db0c5 | 856 | |
0339cd77 LP |
857 | r = sd_dhcp_lease_get_address(lease, &address); |
858 | if (r >= 0) | |
859 | fprintf(f, "ADDRESS=%s\n", inet_ntoa(address)); | |
fe8db0c5 | 860 | |
0339cd77 LP |
861 | r = sd_dhcp_lease_get_netmask(lease, &address); |
862 | if (r >= 0) | |
863 | fprintf(f, "NETMASK=%s\n", inet_ntoa(address)); | |
fe8db0c5 | 864 | |
8ddbeaa2 UTL |
865 | r = sd_dhcp_lease_get_router(lease, &address); |
866 | if (r >= 0) | |
867 | fprintf(f, "ROUTER=%s\n", inet_ntoa(address)); | |
868 | ||
0ad853bc | 869 | r = sd_dhcp_lease_get_server_identifier(lease, &address); |
109731eb | 870 | if (r >= 0) |
0339cd77 | 871 | fprintf(f, "SERVER_ADDRESS=%s\n", inet_ntoa(address)); |
0ad853bc | 872 | |
8e34a618 | 873 | r = sd_dhcp_lease_get_next_server(lease, &address); |
109731eb TG |
874 | if (r >= 0) |
875 | fprintf(f, "NEXT_SERVER=%s\n", inet_ntoa(address)); | |
8e34a618 | 876 | |
0339cd77 LP |
877 | r = sd_dhcp_lease_get_broadcast(lease, &address); |
878 | if (r >= 0) | |
879 | fprintf(f, "BROADCAST=%s\n", inet_ntoa(address)); | |
880 | ||
fe8db0c5 TG |
881 | r = sd_dhcp_lease_get_mtu(lease, &mtu); |
882 | if (r >= 0) | |
883 | fprintf(f, "MTU=%" PRIu16 "\n", mtu); | |
884 | ||
0339cd77 LP |
885 | r = sd_dhcp_lease_get_t1(lease, &t1); |
886 | if (r >= 0) | |
887 | fprintf(f, "T1=%" PRIu32 "\n", t1); | |
888 | ||
889 | r = sd_dhcp_lease_get_t2(lease, &t2); | |
109731eb | 890 | if (r >= 0) |
0339cd77 LP |
891 | fprintf(f, "T2=%" PRIu32 "\n", t2); |
892 | ||
893 | r = sd_dhcp_lease_get_lifetime(lease, &lifetime); | |
894 | if (r >= 0) | |
895 | fprintf(f, "LIFETIME=%" PRIu32 "\n", lifetime); | |
896 | ||
897 | r = sd_dhcp_lease_get_dns(lease, &addresses); | |
898 | if (r > 0) { | |
0d536673 | 899 | fputs("DNS=", f); |
b0e39c82 | 900 | serialize_in_addrs(f, addresses, r); |
0d536673 | 901 | fputs("\n", f); |
0339cd77 | 902 | } |
109731eb | 903 | |
a2ba62c7 | 904 | r = sd_dhcp_lease_get_ntp(lease, &addresses); |
0339cd77 | 905 | if (r > 0) { |
0d536673 | 906 | fputs("NTP=", f); |
b0e39c82 | 907 | serialize_in_addrs(f, addresses, r); |
0d536673 | 908 | fputs("\n", f); |
0339cd77 | 909 | } |
fe8db0c5 TG |
910 | |
911 | r = sd_dhcp_lease_get_domainname(lease, &string); | |
912 | if (r >= 0) | |
913 | fprintf(f, "DOMAINNAME=%s\n", string); | |
914 | ||
b85bc551 DW |
915 | r = sd_dhcp_lease_get_search_domains(lease, &search_domains); |
916 | if (r > 0) { | |
0d536673 | 917 | fputs("DOMAIN_SEARCH_LIST=", f); |
b85bc551 | 918 | fputstrv(f, search_domains, NULL, NULL); |
0d536673 | 919 | fputs("\n", f); |
b85bc551 DW |
920 | } |
921 | ||
fe8db0c5 TG |
922 | r = sd_dhcp_lease_get_hostname(lease, &string); |
923 | if (r >= 0) | |
924 | fprintf(f, "HOSTNAME=%s\n", string); | |
925 | ||
ce78df79 TG |
926 | r = sd_dhcp_lease_get_root_path(lease, &string); |
927 | if (r >= 0) | |
928 | fprintf(f, "ROOT_PATH=%s\n", string); | |
929 | ||
a2ba62c7 | 930 | r = sd_dhcp_lease_get_routes(lease, &routes); |
0339cd77 | 931 | if (r > 0) |
a2ba62c7 | 932 | serialize_dhcp_routes(f, "ROUTES", routes, r); |
e1ea665e | 933 | |
8eb9058d LP |
934 | r = sd_dhcp_lease_get_timezone(lease, &string); |
935 | if (r >= 0) | |
936 | fprintf(f, "TIMEZONE=%s\n", string); | |
937 | ||
e37f74a6 DW |
938 | r = sd_dhcp_lease_get_client_id(lease, &client_id, &client_id_len); |
939 | if (r >= 0) { | |
3587161a | 940 | _cleanup_free_ char *client_id_hex = NULL; |
e37f74a6 | 941 | |
dde8bb32 | 942 | client_id_hex = hexmem(client_id, client_id_len); |
e37f74a6 DW |
943 | if (!client_id_hex) { |
944 | r = -ENOMEM; | |
dacd6cee | 945 | goto fail; |
e37f74a6 DW |
946 | } |
947 | fprintf(f, "CLIENTID=%s\n", client_id_hex); | |
948 | } | |
949 | ||
e43a8393 BG |
950 | r = sd_dhcp_lease_get_vendor_specific(lease, &data, &data_len); |
951 | if (r >= 0) { | |
952 | _cleanup_free_ char *option_hex = NULL; | |
953 | ||
954 | option_hex = hexmem(data, data_len); | |
955 | if (!option_hex) { | |
956 | r = -ENOMEM; | |
dacd6cee | 957 | goto fail; |
e43a8393 BG |
958 | } |
959 | fprintf(f, "VENDOR_SPECIFIC=%s\n", option_hex); | |
960 | } | |
961 | ||
a073309f | 962 | LIST_FOREACH(options, option, lease->private_options) { |
dbcb4a90 | 963 | char key[STRLEN("OPTION_000")+1]; |
0339cd77 | 964 | |
d054f0a4 | 965 | xsprintf(key, "OPTION_%" PRIu8, option->tag); |
a073309f AC |
966 | r = serialize_dhcp_option(f, key, option->data, option->length); |
967 | if (r < 0) | |
968 | goto fail; | |
969 | } | |
970 | ||
dacd6cee LP |
971 | r = fflush_and_check(f); |
972 | if (r < 0) | |
973 | goto fail; | |
fe8db0c5 | 974 | |
dacd6cee | 975 | if (rename(temp_path, lease_file) < 0) { |
fe8db0c5 | 976 | r = -errno; |
dacd6cee | 977 | goto fail; |
fe8db0c5 TG |
978 | } |
979 | ||
dacd6cee LP |
980 | return 0; |
981 | ||
982 | fail: | |
983 | if (temp_path) | |
984 | (void) unlink(temp_path); | |
fe8db0c5 | 985 | |
dacd6cee | 986 | return log_error_errno(r, "Failed to save lease data %s: %m", lease_file); |
fe8db0c5 TG |
987 | } |
988 | ||
bd91b83e | 989 | int dhcp_lease_load(sd_dhcp_lease **ret, const char *lease_file) { |
0339cd77 | 990 | |
4afd3348 | 991 | _cleanup_(sd_dhcp_lease_unrefp) sd_dhcp_lease *lease = NULL; |
0339cd77 LP |
992 | _cleanup_free_ char |
993 | *address = NULL, | |
994 | *router = NULL, | |
995 | *netmask = NULL, | |
996 | *server_address = NULL, | |
997 | *next_server = NULL, | |
998 | *broadcast = NULL, | |
999 | *dns = NULL, | |
1000 | *ntp = NULL, | |
1001 | *mtu = NULL, | |
1002 | *routes = NULL, | |
b85bc551 | 1003 | *domains = NULL, |
0339cd77 LP |
1004 | *client_id_hex = NULL, |
1005 | *vendor_specific_hex = NULL, | |
1006 | *lifetime = NULL, | |
1007 | *t1 = NULL, | |
1008 | *t2 = NULL, | |
22805d92 | 1009 | *options[SD_DHCP_OPTION_PRIVATE_LAST - SD_DHCP_OPTION_PRIVATE_BASE + 1] = {}; |
0339cd77 | 1010 | |
a073309f | 1011 | int r, i; |
fe8db0c5 TG |
1012 | |
1013 | assert(lease_file); | |
1014 | assert(ret); | |
1015 | ||
1016 | r = dhcp_lease_new(&lease); | |
1017 | if (r < 0) | |
1018 | return r; | |
1019 | ||
aa8fbc74 | 1020 | r = parse_env_file(NULL, lease_file, |
fe8db0c5 TG |
1021 | "ADDRESS", &address, |
1022 | "ROUTER", &router, | |
1023 | "NETMASK", &netmask, | |
0ad853bc | 1024 | "SERVER_IDENTIFIER", &server_address, |
8e34a618 | 1025 | "NEXT_SERVER", &next_server, |
0339cd77 | 1026 | "BROADCAST", &broadcast, |
109731eb TG |
1027 | "DNS", &dns, |
1028 | "NTP", &ntp, | |
fe8db0c5 TG |
1029 | "MTU", &mtu, |
1030 | "DOMAINNAME", &lease->domainname, | |
1031 | "HOSTNAME", &lease->hostname, | |
b85bc551 | 1032 | "DOMAIN_SEARCH_LIST", &domains, |
ce78df79 | 1033 | "ROOT_PATH", &lease->root_path, |
e1ea665e | 1034 | "ROUTES", &routes, |
e37f74a6 | 1035 | "CLIENTID", &client_id_hex, |
8eb9058d | 1036 | "TIMEZONE", &lease->timezone, |
e43a8393 | 1037 | "VENDOR_SPECIFIC", &vendor_specific_hex, |
0339cd77 LP |
1038 | "LIFETIME", &lifetime, |
1039 | "T1", &t1, | |
1040 | "T2", &t2, | |
a073309f AC |
1041 | "OPTION_224", &options[0], |
1042 | "OPTION_225", &options[1], | |
1043 | "OPTION_226", &options[2], | |
1044 | "OPTION_227", &options[3], | |
1045 | "OPTION_228", &options[4], | |
1046 | "OPTION_229", &options[5], | |
1047 | "OPTION_230", &options[6], | |
1048 | "OPTION_231", &options[7], | |
1049 | "OPTION_232", &options[8], | |
1050 | "OPTION_233", &options[9], | |
1051 | "OPTION_234", &options[10], | |
1052 | "OPTION_235", &options[11], | |
1053 | "OPTION_236", &options[12], | |
1054 | "OPTION_237", &options[13], | |
1055 | "OPTION_238", &options[14], | |
1056 | "OPTION_239", &options[15], | |
1057 | "OPTION_240", &options[16], | |
1058 | "OPTION_241", &options[17], | |
1059 | "OPTION_242", &options[18], | |
1060 | "OPTION_243", &options[19], | |
1061 | "OPTION_244", &options[20], | |
1062 | "OPTION_245", &options[21], | |
1063 | "OPTION_246", &options[22], | |
1064 | "OPTION_247", &options[23], | |
1065 | "OPTION_248", &options[24], | |
1066 | "OPTION_249", &options[25], | |
1067 | "OPTION_250", &options[26], | |
1068 | "OPTION_251", &options[27], | |
1069 | "OPTION_252", &options[28], | |
1070 | "OPTION_253", &options[29], | |
13df9c39 | 1071 | "OPTION_254", &options[30]); |
fe8db0c5 TG |
1072 | if (r < 0) |
1073 | return r; | |
1074 | ||
0339cd77 LP |
1075 | if (address) { |
1076 | r = inet_pton(AF_INET, address, &lease->address); | |
1077 | if (r <= 0) | |
e26ea7fc | 1078 | log_debug("Failed to parse address %s, ignoring.", address); |
0339cd77 | 1079 | } |
fe8db0c5 | 1080 | |
8ddbeaa2 | 1081 | if (router) { |
0339cd77 LP |
1082 | r = inet_pton(AF_INET, router, &lease->router); |
1083 | if (r <= 0) | |
e26ea7fc | 1084 | log_debug("Failed to parse router %s, ignoring.", router); |
8ddbeaa2 | 1085 | } |
fe8db0c5 | 1086 | |
0339cd77 LP |
1087 | if (netmask) { |
1088 | r = inet_pton(AF_INET, netmask, &lease->subnet_mask); | |
1089 | if (r <= 0) | |
e26ea7fc | 1090 | log_debug("Failed to parse netmask %s, ignoring.", netmask); |
0339cd77 LP |
1091 | else |
1092 | lease->have_subnet_mask = true; | |
1093 | } | |
fe8db0c5 | 1094 | |
0ad853bc | 1095 | if (server_address) { |
0339cd77 LP |
1096 | r = inet_pton(AF_INET, server_address, &lease->server_address); |
1097 | if (r <= 0) | |
e26ea7fc | 1098 | log_debug("Failed to parse server address %s, ignoring.", server_address); |
0ad853bc TG |
1099 | } |
1100 | ||
8e34a618 | 1101 | if (next_server) { |
0339cd77 LP |
1102 | r = inet_pton(AF_INET, next_server, &lease->next_server); |
1103 | if (r <= 0) | |
e26ea7fc | 1104 | log_debug("Failed to parse next server %s, ignoring.", next_server); |
0339cd77 | 1105 | } |
8e34a618 | 1106 | |
0339cd77 LP |
1107 | if (broadcast) { |
1108 | r = inet_pton(AF_INET, broadcast, &lease->broadcast); | |
1109 | if (r <= 0) | |
e26ea7fc | 1110 | log_debug("Failed to parse broadcast address %s, ignoring.", broadcast); |
0339cd77 LP |
1111 | else |
1112 | lease->have_broadcast = true; | |
8e34a618 TG |
1113 | } |
1114 | ||
109731eb | 1115 | if (dns) { |
a2ba62c7 | 1116 | r = deserialize_in_addrs(&lease->dns, dns); |
109731eb | 1117 | if (r < 0) |
0339cd77 LP |
1118 | log_debug_errno(r, "Failed to deserialize DNS servers %s, ignoring: %m", dns); |
1119 | else | |
1120 | lease->dns_size = r; | |
109731eb TG |
1121 | } |
1122 | ||
1123 | if (ntp) { | |
a2ba62c7 | 1124 | r = deserialize_in_addrs(&lease->ntp, ntp); |
109731eb | 1125 | if (r < 0) |
0339cd77 LP |
1126 | log_debug_errno(r, "Failed to deserialize NTP servers %s, ignoring: %m", ntp); |
1127 | else | |
1128 | lease->ntp_size = r; | |
109731eb TG |
1129 | } |
1130 | ||
fe8db0c5 | 1131 | if (mtu) { |
0339cd77 LP |
1132 | r = safe_atou16(mtu, &lease->mtu); |
1133 | if (r < 0) | |
1134 | log_debug_errno(r, "Failed to parse MTU %s, ignoring: %m", mtu); | |
fe8db0c5 TG |
1135 | } |
1136 | ||
b85bc551 DW |
1137 | if (domains) { |
1138 | _cleanup_strv_free_ char **a = NULL; | |
1139 | a = strv_split(domains, " "); | |
1140 | if (!a) | |
1141 | return -ENOMEM; | |
1142 | ||
1143 | if (!strv_isempty(a)) { | |
1144 | lease->search_domains = a; | |
1145 | a = NULL; | |
1146 | } | |
1147 | } | |
1148 | ||
e1ea665e | 1149 | if (routes) { |
0339cd77 LP |
1150 | r = deserialize_dhcp_routes( |
1151 | &lease->static_route, | |
1152 | &lease->static_route_size, | |
1153 | &lease->static_route_allocated, | |
1154 | routes); | |
1155 | if (r < 0) | |
1156 | log_debug_errno(r, "Failed to parse DHCP routes %s, ignoring: %m", routes); | |
1157 | } | |
1158 | ||
1159 | if (lifetime) { | |
1160 | r = safe_atou32(lifetime, &lease->lifetime); | |
1161 | if (r < 0) | |
1162 | log_debug_errno(r, "Failed to parse lifetime %s, ignoring: %m", lifetime); | |
1163 | } | |
1164 | ||
1165 | if (t1) { | |
1166 | r = safe_atou32(t1, &lease->t1); | |
1167 | if (r < 0) | |
1168 | log_debug_errno(r, "Failed to parse T1 %s, ignoring: %m", t1); | |
1169 | } | |
1170 | ||
1171 | if (t2) { | |
1172 | r = safe_atou32(t2, &lease->t2); | |
e1ea665e | 1173 | if (r < 0) |
0339cd77 | 1174 | log_debug_errno(r, "Failed to parse T2 %s, ignoring: %m", t2); |
e1ea665e EY |
1175 | } |
1176 | ||
e37f74a6 | 1177 | if (client_id_hex) { |
ce088d6f | 1178 | r = unhexmem(client_id_hex, (size_t) -1, &lease->client_id, &lease->client_id_len); |
30494563 | 1179 | if (r < 0) |
0339cd77 | 1180 | log_debug_errno(r, "Failed to parse client ID %s, ignoring: %m", client_id_hex); |
e37f74a6 DW |
1181 | } |
1182 | ||
e43a8393 | 1183 | if (vendor_specific_hex) { |
ce088d6f | 1184 | r = unhexmem(vendor_specific_hex, (size_t) -1, &lease->vendor_specific, &lease->vendor_specific_len); |
e43a8393 | 1185 | if (r < 0) |
0339cd77 | 1186 | log_debug_errno(r, "Failed to parse vendor specific data %s, ignoring: %m", vendor_specific_hex); |
e43a8393 BG |
1187 | } |
1188 | ||
22805d92 | 1189 | for (i = 0; i <= SD_DHCP_OPTION_PRIVATE_LAST - SD_DHCP_OPTION_PRIVATE_BASE; i++) { |
e4735228 | 1190 | _cleanup_free_ void *data = NULL; |
a073309f AC |
1191 | size_t len; |
1192 | ||
1193 | if (!options[i]) | |
1194 | continue; | |
1195 | ||
ce088d6f | 1196 | r = unhexmem(options[i], (size_t) -1, &data, &len); |
0339cd77 LP |
1197 | if (r < 0) { |
1198 | log_debug_errno(r, "Failed to parse private DHCP option %s, ignoring: %m", options[i]); | |
1199 | continue; | |
1200 | } | |
a073309f | 1201 | |
22805d92 | 1202 | r = dhcp_lease_insert_private_option(lease, SD_DHCP_OPTION_PRIVATE_BASE + i, data, len); |
626be147 | 1203 | if (r < 0) |
a073309f AC |
1204 | return r; |
1205 | } | |
1206 | ||
1cc6c93a | 1207 | *ret = TAKE_PTR(lease); |
fe8db0c5 TG |
1208 | |
1209 | return 0; | |
1210 | } | |
9e64dd72 TG |
1211 | |
1212 | int dhcp_lease_set_default_subnet_mask(sd_dhcp_lease *lease) { | |
0339cd77 | 1213 | struct in_addr address, mask; |
df40eee8 | 1214 | int r; |
9e64dd72 TG |
1215 | |
1216 | assert(lease); | |
9e64dd72 | 1217 | |
0339cd77 LP |
1218 | if (lease->address == 0) |
1219 | return -ENODATA; | |
1220 | ||
df40eee8 | 1221 | address.s_addr = lease->address; |
9e64dd72 TG |
1222 | |
1223 | /* fall back to the default subnet masks based on address class */ | |
5a941f5f | 1224 | r = in4_addr_default_subnet_mask(&address, &mask); |
df40eee8 TG |
1225 | if (r < 0) |
1226 | return r; | |
9e64dd72 | 1227 | |
df40eee8 | 1228 | lease->subnet_mask = mask.s_addr; |
0339cd77 | 1229 | lease->have_subnet_mask = true; |
9e64dd72 TG |
1230 | |
1231 | return 0; | |
1232 | } | |
e37f74a6 | 1233 | |
0339cd77 | 1234 | int sd_dhcp_lease_get_client_id(sd_dhcp_lease *lease, const void **client_id, size_t *client_id_len) { |
e37f74a6 DW |
1235 | assert_return(lease, -EINVAL); |
1236 | assert_return(client_id, -EINVAL); | |
1237 | assert_return(client_id_len, -EINVAL); | |
1238 | ||
0339cd77 LP |
1239 | if (!lease->client_id) |
1240 | return -ENODATA; | |
1241 | ||
e37f74a6 DW |
1242 | *client_id = lease->client_id; |
1243 | *client_id_len = lease->client_id_len; | |
0339cd77 | 1244 | |
e37f74a6 DW |
1245 | return 0; |
1246 | } | |
1247 | ||
0339cd77 | 1248 | int dhcp_lease_set_client_id(sd_dhcp_lease *lease, const void *client_id, size_t client_id_len) { |
e37f74a6 | 1249 | assert_return(lease, -EINVAL); |
0339cd77 LP |
1250 | assert_return(client_id || client_id_len <= 0, -EINVAL); |
1251 | ||
1252 | if (client_id_len <= 0) | |
1253 | lease->client_id = mfree(lease->client_id); | |
1254 | else { | |
1255 | void *p; | |
e37f74a6 | 1256 | |
0339cd77 LP |
1257 | p = memdup(client_id, client_id_len); |
1258 | if (!p) | |
1259 | return -ENOMEM; | |
e37f74a6 | 1260 | |
0339cd77 LP |
1261 | free(lease->client_id); |
1262 | lease->client_id = p; | |
e37f74a6 DW |
1263 | lease->client_id_len = client_id_len; |
1264 | } | |
1265 | ||
1266 | return 0; | |
1267 | } | |
8eb9058d | 1268 | |
64d6c229 | 1269 | int sd_dhcp_lease_get_timezone(sd_dhcp_lease *lease, const char **tz) { |
8eb9058d | 1270 | assert_return(lease, -EINVAL); |
64d6c229 | 1271 | assert_return(tz, -EINVAL); |
8eb9058d LP |
1272 | |
1273 | if (!lease->timezone) | |
0339cd77 | 1274 | return -ENODATA; |
8eb9058d | 1275 | |
64d6c229 | 1276 | *tz = lease->timezone; |
8eb9058d LP |
1277 | return 0; |
1278 | } | |
f8693fc7 BG |
1279 | |
1280 | int sd_dhcp_route_get_destination(sd_dhcp_route *route, struct in_addr *destination) { | |
1281 | assert_return(route, -EINVAL); | |
1282 | assert_return(destination, -EINVAL); | |
1283 | ||
1284 | *destination = route->dst_addr; | |
1285 | return 0; | |
1286 | } | |
1287 | ||
1288 | int sd_dhcp_route_get_destination_prefix_length(sd_dhcp_route *route, uint8_t *length) { | |
1289 | assert_return(route, -EINVAL); | |
1290 | assert_return(length, -EINVAL); | |
1291 | ||
1292 | *length = route->dst_prefixlen; | |
1293 | return 0; | |
1294 | } | |
1295 | ||
1296 | int sd_dhcp_route_get_gateway(sd_dhcp_route *route, struct in_addr *gateway) { | |
1297 | assert_return(route, -EINVAL); | |
1298 | assert_return(gateway, -EINVAL); | |
1299 | ||
1300 | *gateway = route->gw_addr; | |
1301 | return 0; | |
1302 | } | |
cf6f5bb5 TH |
1303 | |
1304 | int sd_dhcp_route_get_option(sd_dhcp_route *route) { | |
1305 | assert_return(route, -EINVAL); | |
1306 | ||
1307 | return route->option; | |
1308 | } |