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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> |
07630cea | 8 | #include <stdlib.h> |
ca78ad1d ZJS |
9 | #include <sys/stat.h> |
10 | #include <sys/types.h> | |
11 | #include <unistd.h> | |
07630cea LP |
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" | |
686d13b9 | 19 | #include "env-file.h" |
3ffd4af2 | 20 | #include "fd-util.h" |
fe8db0c5 | 21 | #include "fileio.h" |
b11d6a7b | 22 | #include "hexdecoct.h" |
958b66ea | 23 | #include "hostname-util.h" |
07630cea | 24 | #include "in-addr-util.h" |
0339cd77 | 25 | #include "network-internal.h" |
6bedfcbb | 26 | #include "parse-util.h" |
d054f0a4 | 27 | #include "stdio-util.h" |
b11d6a7b | 28 | #include "string-util.h" |
51517f9e | 29 | #include "strv.h" |
e4de7287 | 30 | #include "tmpfile-util.h" |
07630cea | 31 | #include "unaligned.h" |
a6cc569e TG |
32 | |
33 | int sd_dhcp_lease_get_address(sd_dhcp_lease *lease, struct in_addr *addr) { | |
34 | assert_return(lease, -EINVAL); | |
35 | assert_return(addr, -EINVAL); | |
36 | ||
0339cd77 LP |
37 | if (lease->address == 0) |
38 | return -ENODATA; | |
39 | ||
a6cc569e | 40 | addr->s_addr = lease->address; |
0339cd77 LP |
41 | return 0; |
42 | } | |
a6cc569e | 43 | |
0339cd77 LP |
44 | int sd_dhcp_lease_get_broadcast(sd_dhcp_lease *lease, struct in_addr *addr) { |
45 | assert_return(lease, -EINVAL); | |
46 | assert_return(addr, -EINVAL); | |
47 | ||
48 | if (!lease->have_broadcast) | |
49 | return -ENODATA; | |
50 | ||
51 | addr->s_addr = lease->broadcast; | |
a6cc569e TG |
52 | return 0; |
53 | } | |
54 | ||
68ceb9df PF |
55 | int sd_dhcp_lease_get_lifetime(sd_dhcp_lease *lease, uint32_t *lifetime) { |
56 | assert_return(lease, -EINVAL); | |
1c6eb4e3 | 57 | assert_return(lifetime, -EINVAL); |
68ceb9df | 58 | |
0339cd77 LP |
59 | if (lease->lifetime <= 0) |
60 | return -ENODATA; | |
61 | ||
68ceb9df | 62 | *lifetime = lease->lifetime; |
0339cd77 LP |
63 | return 0; |
64 | } | |
68ceb9df | 65 | |
0339cd77 LP |
66 | int sd_dhcp_lease_get_t1(sd_dhcp_lease *lease, uint32_t *t1) { |
67 | assert_return(lease, -EINVAL); | |
68 | assert_return(t1, -EINVAL); | |
69 | ||
70 | if (lease->t1 <= 0) | |
71 | return -ENODATA; | |
72 | ||
73 | *t1 = lease->t1; | |
74 | return 0; | |
75 | } | |
76 | ||
77 | int sd_dhcp_lease_get_t2(sd_dhcp_lease *lease, uint32_t *t2) { | |
78 | assert_return(lease, -EINVAL); | |
79 | assert_return(t2, -EINVAL); | |
80 | ||
81 | if (lease->t2 <= 0) | |
82 | return -ENODATA; | |
83 | ||
84 | *t2 = lease->t2; | |
68ceb9df PF |
85 | return 0; |
86 | } | |
87 | ||
a6cc569e TG |
88 | int sd_dhcp_lease_get_mtu(sd_dhcp_lease *lease, uint16_t *mtu) { |
89 | assert_return(lease, -EINVAL); | |
90 | assert_return(mtu, -EINVAL); | |
91 | ||
0339cd77 LP |
92 | if (lease->mtu <= 0) |
93 | return -ENODATA; | |
a6cc569e | 94 | |
0339cd77 | 95 | *mtu = lease->mtu; |
a6cc569e TG |
96 | return 0; |
97 | } | |
98 | ||
8541db8f ZJS |
99 | int sd_dhcp_lease_get_servers( |
100 | sd_dhcp_lease *lease, | |
ddb82ec2 | 101 | sd_dhcp_lease_server_type what, |
8541db8f ZJS |
102 | const struct in_addr **addr) { |
103 | ||
a6cc569e | 104 | assert_return(lease, -EINVAL); |
ddb82ec2 LP |
105 | assert_return(what >= 0, -EINVAL); |
106 | assert_return(what < _SD_DHCP_LEASE_SERVER_TYPE_MAX, -EINVAL); | |
a6cc569e | 107 | assert_return(addr, -EINVAL); |
a6cc569e | 108 | |
ddb82ec2 LP |
109 | if (lease->servers[what].size <= 0) |
110 | return -ENODATA; | |
50018bfa | 111 | |
ddb82ec2 LP |
112 | *addr = lease->servers[what].addr; |
113 | return (int) lease->servers[what].size; | |
f678ac7e SS |
114 | } |
115 | ||
8541db8f | 116 | int sd_dhcp_lease_get_dns(sd_dhcp_lease *lease, const struct in_addr **addr) { |
ddb82ec2 | 117 | return sd_dhcp_lease_get_servers(lease, SD_DHCP_LEASE_DNS, addr); |
8541db8f ZJS |
118 | } |
119 | int sd_dhcp_lease_get_ntp(sd_dhcp_lease *lease, const struct in_addr **addr) { | |
ddb82ec2 | 120 | return sd_dhcp_lease_get_servers(lease, SD_DHCP_LEASE_NTP, addr); |
8541db8f ZJS |
121 | } |
122 | int sd_dhcp_lease_get_sip(sd_dhcp_lease *lease, const struct in_addr **addr) { | |
ddb82ec2 | 123 | return sd_dhcp_lease_get_servers(lease, SD_DHCP_LEASE_SIP, addr); |
8541db8f | 124 | } |
ddb82ec2 LP |
125 | int sd_dhcp_lease_get_pop3(sd_dhcp_lease *lease, const struct in_addr **addr) { |
126 | return sd_dhcp_lease_get_servers(lease, SD_DHCP_LEASE_POP3, addr); | |
8541db8f | 127 | } |
ddb82ec2 LP |
128 | int sd_dhcp_lease_get_smtp(sd_dhcp_lease *lease, const struct in_addr **addr) { |
129 | return sd_dhcp_lease_get_servers(lease, SD_DHCP_LEASE_SMTP, addr); | |
2c649ca1 | 130 | } |
ddb82ec2 LP |
131 | int sd_dhcp_lease_get_lpr(sd_dhcp_lease *lease, const struct in_addr **addr) { |
132 | return sd_dhcp_lease_get_servers(lease, SD_DHCP_LEASE_LPR, addr); | |
50018bfa | 133 | } |
2c649ca1 | 134 | |
a6cc569e TG |
135 | int sd_dhcp_lease_get_domainname(sd_dhcp_lease *lease, const char **domainname) { |
136 | assert_return(lease, -EINVAL); | |
137 | assert_return(domainname, -EINVAL); | |
138 | ||
0339cd77 LP |
139 | if (!lease->domainname) |
140 | return -ENODATA; | |
a6cc569e | 141 | |
0339cd77 | 142 | *domainname = lease->domainname; |
a6cc569e TG |
143 | return 0; |
144 | } | |
145 | ||
146 | int sd_dhcp_lease_get_hostname(sd_dhcp_lease *lease, const char **hostname) { | |
147 | assert_return(lease, -EINVAL); | |
148 | assert_return(hostname, -EINVAL); | |
149 | ||
0339cd77 LP |
150 | if (!lease->hostname) |
151 | return -ENODATA; | |
a6cc569e | 152 | |
0339cd77 | 153 | *hostname = lease->hostname; |
a6cc569e TG |
154 | return 0; |
155 | } | |
156 | ||
ce78df79 TG |
157 | int sd_dhcp_lease_get_root_path(sd_dhcp_lease *lease, const char **root_path) { |
158 | assert_return(lease, -EINVAL); | |
159 | assert_return(root_path, -EINVAL); | |
160 | ||
0339cd77 LP |
161 | if (!lease->root_path) |
162 | return -ENODATA; | |
ce78df79 | 163 | |
0339cd77 | 164 | *root_path = lease->root_path; |
ce78df79 TG |
165 | return 0; |
166 | } | |
167 | ||
f8862395 | 168 | int sd_dhcp_lease_get_router(sd_dhcp_lease *lease, const struct in_addr **addr) { |
a6cc569e TG |
169 | assert_return(lease, -EINVAL); |
170 | assert_return(addr, -EINVAL); | |
171 | ||
f8862395 | 172 | if (lease->router_size <= 0) |
0339cd77 | 173 | return -ENODATA; |
a6cc569e | 174 | |
f8862395 TH |
175 | *addr = lease->router; |
176 | return (int) lease->router_size; | |
a6cc569e TG |
177 | } |
178 | ||
179 | int sd_dhcp_lease_get_netmask(sd_dhcp_lease *lease, struct in_addr *addr) { | |
180 | assert_return(lease, -EINVAL); | |
181 | assert_return(addr, -EINVAL); | |
182 | ||
0339cd77 LP |
183 | if (!lease->have_subnet_mask) |
184 | return -ENODATA; | |
a6cc569e | 185 | |
0339cd77 | 186 | addr->s_addr = lease->subnet_mask; |
a6cc569e TG |
187 | return 0; |
188 | } | |
189 | ||
0ad853bc TG |
190 | int sd_dhcp_lease_get_server_identifier(sd_dhcp_lease *lease, struct in_addr *addr) { |
191 | assert_return(lease, -EINVAL); | |
192 | assert_return(addr, -EINVAL); | |
193 | ||
0339cd77 LP |
194 | if (lease->server_address == 0) |
195 | return -ENODATA; | |
0ad853bc | 196 | |
0339cd77 | 197 | addr->s_addr = lease->server_address; |
0ad853bc TG |
198 | return 0; |
199 | } | |
200 | ||
8e34a618 TG |
201 | int sd_dhcp_lease_get_next_server(sd_dhcp_lease *lease, struct in_addr *addr) { |
202 | assert_return(lease, -EINVAL); | |
203 | assert_return(addr, -EINVAL); | |
204 | ||
0339cd77 LP |
205 | if (lease->next_server == 0) |
206 | return -ENODATA; | |
8e34a618 | 207 | |
0339cd77 | 208 | addr->s_addr = lease->next_server; |
8e34a618 TG |
209 | return 0; |
210 | } | |
211 | ||
f8693fc7 BG |
212 | /* |
213 | * The returned routes array must be freed by the caller. | |
214 | * Route objects have the same lifetime of the lease and must not be freed. | |
215 | */ | |
216 | int sd_dhcp_lease_get_routes(sd_dhcp_lease *lease, sd_dhcp_route ***routes) { | |
217 | sd_dhcp_route **ret; | |
218 | unsigned i; | |
219 | ||
e1ea665e EY |
220 | assert_return(lease, -EINVAL); |
221 | assert_return(routes, -EINVAL); | |
e1ea665e | 222 | |
0339cd77 LP |
223 | if (lease->static_route_size <= 0) |
224 | return -ENODATA; | |
e1ea665e | 225 | |
f8693fc7 BG |
226 | ret = new(sd_dhcp_route *, lease->static_route_size); |
227 | if (!ret) | |
228 | return -ENOMEM; | |
229 | ||
230 | for (i = 0; i < lease->static_route_size; i++) | |
231 | ret[i] = &lease->static_route[i]; | |
232 | ||
233 | *routes = ret; | |
0339cd77 | 234 | return (int) lease->static_route_size; |
e1ea665e EY |
235 | } |
236 | ||
b85bc551 | 237 | int sd_dhcp_lease_get_search_domains(sd_dhcp_lease *lease, char ***domains) { |
da6053d0 | 238 | size_t r; |
b85bc551 DW |
239 | |
240 | assert_return(lease, -EINVAL); | |
241 | assert_return(domains, -EINVAL); | |
242 | ||
243 | r = strv_length(lease->search_domains); | |
244 | if (r > 0) { | |
245 | *domains = lease->search_domains; | |
246 | return (int) r; | |
247 | } | |
248 | ||
249 | return -ENODATA; | |
250 | } | |
251 | ||
0339cd77 | 252 | int sd_dhcp_lease_get_vendor_specific(sd_dhcp_lease *lease, const void **data, size_t *data_len) { |
e43a8393 BG |
253 | assert_return(lease, -EINVAL); |
254 | assert_return(data, -EINVAL); | |
255 | assert_return(data_len, -EINVAL); | |
256 | ||
0339cd77 LP |
257 | if (lease->vendor_specific_len <= 0) |
258 | return -ENODATA; | |
e43a8393 BG |
259 | |
260 | *data = lease->vendor_specific; | |
261 | *data_len = lease->vendor_specific_len; | |
e43a8393 BG |
262 | return 0; |
263 | } | |
264 | ||
8301aa0b YW |
265 | static sd_dhcp_lease *dhcp_lease_free(sd_dhcp_lease *lease) { |
266 | assert(lease); | |
3733eec3 LP |
267 | |
268 | while (lease->private_options) { | |
269 | struct sd_dhcp_raw_option *option = lease->private_options; | |
270 | ||
271 | LIST_REMOVE(options, lease->private_options, option); | |
272 | ||
273 | free(option->data); | |
274 | free(option); | |
a6cc569e TG |
275 | } |
276 | ||
e2975f85 | 277 | free(lease->root_path); |
f8862395 | 278 | free(lease->router); |
e2975f85 | 279 | free(lease->timezone); |
3733eec3 LP |
280 | free(lease->hostname); |
281 | free(lease->domainname); | |
ddb82ec2 LP |
282 | |
283 | for (sd_dhcp_lease_server_type i = 0; i < _SD_DHCP_LEASE_SERVER_TYPE_MAX; i++) | |
284 | free(lease->servers[i].addr); | |
285 | ||
3733eec3 LP |
286 | free(lease->static_route); |
287 | free(lease->client_id); | |
288 | free(lease->vendor_specific); | |
b85bc551 | 289 | strv_free(lease->search_domains); |
6b430fdb | 290 | return mfree(lease); |
a6cc569e TG |
291 | } |
292 | ||
8301aa0b YW |
293 | DEFINE_TRIVIAL_REF_UNREF_FUNC(sd_dhcp_lease, sd_dhcp_lease, dhcp_lease_free); |
294 | ||
0339cd77 | 295 | static int lease_parse_u32(const uint8_t *option, size_t len, uint32_t *ret, uint32_t min) { |
e140ae58 TG |
296 | assert(option); |
297 | assert(ret); | |
298 | ||
0339cd77 LP |
299 | if (len != 4) |
300 | return -EINVAL; | |
e140ae58 | 301 | |
0339cd77 LP |
302 | *ret = unaligned_read_be32((be32_t*) option); |
303 | if (*ret < min) | |
304 | *ret = min; | |
e140ae58 | 305 | |
0339cd77 | 306 | return 0; |
e140ae58 TG |
307 | } |
308 | ||
0339cd77 | 309 | static int lease_parse_u16(const uint8_t *option, size_t len, uint16_t *ret, uint16_t min) { |
e140ae58 TG |
310 | assert(option); |
311 | assert(ret); | |
312 | ||
0339cd77 LP |
313 | if (len != 2) |
314 | return -EINVAL; | |
e140ae58 | 315 | |
0339cd77 LP |
316 | *ret = unaligned_read_be16((be16_t*) option); |
317 | if (*ret < min) | |
318 | *ret = min; | |
f5c0c00f | 319 | |
0339cd77 | 320 | return 0; |
f5c0c00f TG |
321 | } |
322 | ||
0339cd77 | 323 | static int lease_parse_be32(const uint8_t *option, size_t len, be32_t *ret) { |
f5c0c00f TG |
324 | assert(option); |
325 | assert(ret); | |
326 | ||
0339cd77 LP |
327 | if (len != 4) |
328 | return -EINVAL; | |
f5c0c00f | 329 | |
0339cd77 LP |
330 | memcpy(ret, option, 4); |
331 | return 0; | |
f5c0c00f TG |
332 | } |
333 | ||
e140ae58 TG |
334 | static int lease_parse_string(const uint8_t *option, size_t len, char **ret) { |
335 | assert(option); | |
336 | assert(ret); | |
337 | ||
0339cd77 LP |
338 | if (len <= 0) |
339 | *ret = mfree(*ret); | |
340 | else { | |
e140ae58 TG |
341 | char *string; |
342 | ||
e989fd9b LP |
343 | /* |
344 | * One trailing NUL byte is OK, we don't mind. See: | |
345 | * https://github.com/systemd/systemd/issues/1337 | |
346 | */ | |
347 | if (memchr(option, 0, len - 1)) | |
43f447b1 LP |
348 | return -EINVAL; |
349 | ||
ea082dda | 350 | string = memdup_suffix0((const char *) option, len); |
e140ae58 | 351 | if (!string) |
43f447b1 | 352 | return -ENOMEM; |
e140ae58 | 353 | |
09348d40 | 354 | free_and_replace(*ret, string); |
0339cd77 | 355 | } |
e140ae58 TG |
356 | |
357 | return 0; | |
358 | } | |
359 | ||
978c6477 LP |
360 | static int lease_parse_domain(const uint8_t *option, size_t len, char **ret) { |
361 | _cleanup_free_ char *name = NULL, *normalized = NULL; | |
362 | int r; | |
363 | ||
364 | assert(option); | |
365 | assert(ret); | |
366 | ||
367 | r = lease_parse_string(option, len, &name); | |
368 | if (r < 0) | |
369 | return r; | |
370 | if (!name) { | |
371 | *ret = mfree(*ret); | |
372 | return 0; | |
373 | } | |
374 | ||
7470cc4c | 375 | r = dns_name_normalize(name, 0, &normalized); |
978c6477 LP |
376 | if (r < 0) |
377 | return r; | |
378 | ||
379 | if (is_localhost(normalized)) | |
380 | return -EINVAL; | |
381 | ||
382 | if (dns_name_is_root(normalized)) | |
383 | return -EINVAL; | |
384 | ||
f9ecfd3b | 385 | free_and_replace(*ret, normalized); |
978c6477 LP |
386 | |
387 | return 0; | |
388 | } | |
389 | ||
072320ea | 390 | static int lease_parse_in_addrs(const uint8_t *option, size_t len, struct in_addr **ret, size_t *n_ret) { |
ddb82ec2 | 391 | assert(option || len == 0); |
e140ae58 | 392 | assert(ret); |
0339cd77 | 393 | assert(n_ret); |
e140ae58 | 394 | |
0339cd77 LP |
395 | if (len <= 0) { |
396 | *ret = mfree(*ret); | |
397 | *n_ret = 0; | |
398 | } else { | |
399 | size_t n_addresses; | |
e140ae58 TG |
400 | struct in_addr *addresses; |
401 | ||
0339cd77 LP |
402 | if (len % 4 != 0) |
403 | return -EINVAL; | |
e140ae58 | 404 | |
0339cd77 LP |
405 | n_addresses = len / 4; |
406 | ||
407 | addresses = newdup(struct in_addr, option, n_addresses); | |
e140ae58 TG |
408 | if (!addresses) |
409 | return -ENOMEM; | |
410 | ||
411 | free(*ret); | |
412 | *ret = addresses; | |
0339cd77 | 413 | *n_ret = n_addresses; |
e140ae58 TG |
414 | } |
415 | ||
416 | return 0; | |
417 | } | |
418 | ||
299d578f | 419 | static int lease_parse_sip_server(const uint8_t *option, size_t len, struct in_addr **ret, size_t *n_ret) { |
ddb82ec2 | 420 | assert(option || len == 0); |
299d578f SS |
421 | assert(ret); |
422 | assert(n_ret); | |
423 | ||
ddb82ec2 LP |
424 | if (len <= 0) |
425 | return -EINVAL; | |
299d578f | 426 | |
ddb82ec2 LP |
427 | /* The SIP record is like the other, regular server records, but prefixed with a single "encoding" |
428 | * byte that is either 0 or 1. We only support it to be 1 for now. Let's drop it and parse it like | |
429 | * the other fields */ | |
299d578f | 430 | |
ddb82ec2 LP |
431 | if (option[0] != 1) { /* We only support IP address encoding for now */ |
432 | *ret = mfree(*ret); | |
433 | *n_ret = 0; | |
434 | return 0; | |
299d578f SS |
435 | } |
436 | ||
ddb82ec2 | 437 | return lease_parse_in_addrs(option + 1, len - 1, ret, n_ret); |
299d578f SS |
438 | } |
439 | ||
0339cd77 LP |
440 | static int lease_parse_routes( |
441 | const uint8_t *option, size_t len, | |
442 | struct sd_dhcp_route **routes, size_t *routes_size, size_t *routes_allocated) { | |
e1ea665e EY |
443 | |
444 | struct in_addr addr; | |
445 | ||
0339cd77 | 446 | assert(option || len <= 0); |
e1ea665e EY |
447 | assert(routes); |
448 | assert(routes_size); | |
449 | assert(routes_allocated); | |
450 | ||
0339cd77 | 451 | if (len <= 0) |
e1ea665e EY |
452 | return 0; |
453 | ||
454 | if (len % 8 != 0) | |
455 | return -EINVAL; | |
456 | ||
457 | if (!GREEDY_REALLOC(*routes, *routes_allocated, *routes_size + (len / 8))) | |
458 | return -ENOMEM; | |
459 | ||
460 | while (len >= 8) { | |
461 | struct sd_dhcp_route *route = *routes + *routes_size; | |
1caa12d0 | 462 | int r; |
e1ea665e | 463 | |
8cdc46e7 | 464 | route->option = SD_DHCP_OPTION_STATIC_ROUTE; |
5a941f5f | 465 | r = in4_addr_default_prefixlen((struct in_addr*) option, &route->dst_prefixlen); |
1caa12d0 | 466 | if (r < 0) { |
0339cd77 | 467 | log_debug("Failed to determine destination prefix length from class based IP, ignoring"); |
e1ea665e EY |
468 | continue; |
469 | } | |
470 | ||
0339cd77 | 471 | assert_se(lease_parse_be32(option, 4, &addr.s_addr) >= 0); |
e1ea665e EY |
472 | route->dst_addr = inet_makeaddr(inet_netof(addr), 0); |
473 | option += 4; | |
474 | ||
0339cd77 | 475 | assert_se(lease_parse_be32(option, 4, &route->gw_addr.s_addr) >= 0); |
e1ea665e EY |
476 | option += 4; |
477 | ||
478 | len -= 8; | |
479 | (*routes_size)++; | |
480 | } | |
481 | ||
482 | return 0; | |
483 | } | |
484 | ||
485 | /* parses RFC3442 Classless Static Route Option */ | |
0339cd77 LP |
486 | static int lease_parse_classless_routes( |
487 | const uint8_t *option, size_t len, | |
488 | struct sd_dhcp_route **routes, size_t *routes_size, size_t *routes_allocated) { | |
e1ea665e | 489 | |
0339cd77 | 490 | assert(option || len <= 0); |
e1ea665e EY |
491 | assert(routes); |
492 | assert(routes_size); | |
493 | assert(routes_allocated); | |
494 | ||
0339cd77 LP |
495 | if (len <= 0) |
496 | return 0; | |
497 | ||
e1ea665e EY |
498 | /* option format: (subnet-mask-width significant-subnet-octets gateway-ip)* */ |
499 | ||
500 | while (len > 0) { | |
501 | uint8_t dst_octets; | |
502 | struct sd_dhcp_route *route; | |
503 | ||
504 | if (!GREEDY_REALLOC(*routes, *routes_allocated, *routes_size + 1)) | |
0339cd77 | 505 | return -ENOMEM; |
e1ea665e EY |
506 | |
507 | route = *routes + *routes_size; | |
8cdc46e7 | 508 | route->option = SD_DHCP_OPTION_CLASSLESS_STATIC_ROUTE; |
e1ea665e EY |
509 | |
510 | dst_octets = (*option == 0 ? 0 : ((*option - 1) / 8) + 1); | |
511 | route->dst_prefixlen = *option; | |
512 | option++; | |
513 | len--; | |
514 | ||
515 | /* can't have more than 4 octets in IPv4 */ | |
516 | if (dst_octets > 4 || len < dst_octets) | |
517 | return -EINVAL; | |
518 | ||
519 | route->dst_addr.s_addr = 0; | |
520 | memcpy(&route->dst_addr.s_addr, option, dst_octets); | |
521 | option += dst_octets; | |
522 | len -= dst_octets; | |
523 | ||
524 | if (len < 4) | |
525 | return -EINVAL; | |
526 | ||
b14fff6e | 527 | assert_se(lease_parse_be32(option, 4, &route->gw_addr.s_addr) >= 0); |
e1ea665e EY |
528 | option += 4; |
529 | len -= 4; | |
530 | ||
531 | (*routes_size)++; | |
532 | } | |
533 | ||
534 | return 0; | |
535 | } | |
536 | ||
e4735228 | 537 | int dhcp_lease_parse_options(uint8_t code, uint8_t len, const void *option, void *userdata) { |
2d03c0b8 | 538 | sd_dhcp_lease *lease = userdata; |
e140ae58 TG |
539 | int r; |
540 | ||
541 | assert(lease); | |
a6cc569e TG |
542 | |
543 | switch(code) { | |
544 | ||
22805d92 | 545 | case SD_DHCP_OPTION_IP_ADDRESS_LEASE_TIME: |
0339cd77 LP |
546 | r = lease_parse_u32(option, len, &lease->lifetime, 1); |
547 | if (r < 0) | |
548 | log_debug_errno(r, "Failed to parse lease time, ignoring: %m"); | |
549 | ||
a6cc569e TG |
550 | break; |
551 | ||
22805d92 | 552 | case SD_DHCP_OPTION_SERVER_IDENTIFIER: |
0339cd77 LP |
553 | r = lease_parse_be32(option, len, &lease->server_address); |
554 | if (r < 0) | |
555 | log_debug_errno(r, "Failed to parse server identifier, ignoring: %m"); | |
556 | ||
a6cc569e TG |
557 | break; |
558 | ||
22805d92 | 559 | case SD_DHCP_OPTION_SUBNET_MASK: |
0339cd77 LP |
560 | r = lease_parse_be32(option, len, &lease->subnet_mask); |
561 | if (r < 0) | |
562 | log_debug_errno(r, "Failed to parse subnet mask, ignoring: %m"); | |
563 | else | |
564 | lease->have_subnet_mask = true; | |
a6cc569e TG |
565 | break; |
566 | ||
22805d92 | 567 | case SD_DHCP_OPTION_BROADCAST: |
0339cd77 LP |
568 | r = lease_parse_be32(option, len, &lease->broadcast); |
569 | if (r < 0) | |
570 | log_debug_errno(r, "Failed to parse broadcast address, ignoring: %m"); | |
571 | else | |
572 | lease->have_broadcast = true; | |
f5c0c00f TG |
573 | break; |
574 | ||
22805d92 | 575 | case SD_DHCP_OPTION_ROUTER: |
072320ea | 576 | r = lease_parse_in_addrs(option, len, &lease->router, &lease->router_size); |
f8862395 TH |
577 | if (r < 0) |
578 | log_debug_errno(r, "Failed to parse router addresses, ignoring: %m"); | |
a6cc569e TG |
579 | break; |
580 | ||
22805d92 | 581 | case SD_DHCP_OPTION_DOMAIN_NAME_SERVER: |
ddb82ec2 | 582 | r = lease_parse_in_addrs(option, len, &lease->servers[SD_DHCP_LEASE_DNS].addr, &lease->servers[SD_DHCP_LEASE_DNS].size); |
0339cd77 LP |
583 | if (r < 0) |
584 | log_debug_errno(r, "Failed to parse DNS server, ignoring: %m"); | |
a6cc569e TG |
585 | break; |
586 | ||
22805d92 | 587 | case SD_DHCP_OPTION_NTP_SERVER: |
ddb82ec2 | 588 | r = lease_parse_in_addrs(option, len, &lease->servers[SD_DHCP_LEASE_NTP].addr, &lease->servers[SD_DHCP_LEASE_NTP].size); |
0339cd77 LP |
589 | if (r < 0) |
590 | log_debug_errno(r, "Failed to parse NTP server, ignoring: %m"); | |
f5c0c00f TG |
591 | break; |
592 | ||
299d578f | 593 | case SD_DHCP_OPTION_SIP_SERVER: |
ddb82ec2 | 594 | r = lease_parse_sip_server(option, len, &lease->servers[SD_DHCP_LEASE_SIP].addr, &lease->servers[SD_DHCP_LEASE_SIP].size); |
299d578f SS |
595 | if (r < 0) |
596 | log_debug_errno(r, "Failed to parse SIP server, ignoring: %m"); | |
597 | break; | |
598 | ||
f678ac7e | 599 | case SD_DHCP_OPTION_POP3_SERVER: |
ddb82ec2 | 600 | r = lease_parse_in_addrs(option, len, &lease->servers[SD_DHCP_LEASE_POP3].addr, &lease->servers[SD_DHCP_LEASE_POP3].size); |
f678ac7e SS |
601 | if (r < 0) |
602 | log_debug_errno(r, "Failed to parse POP3 server, ignoring: %m"); | |
603 | break; | |
604 | ||
2c649ca1 | 605 | case SD_DHCP_OPTION_SMTP_SERVER: |
ddb82ec2 | 606 | r = lease_parse_in_addrs(option, len, &lease->servers[SD_DHCP_LEASE_SMTP].addr, &lease->servers[SD_DHCP_LEASE_SMTP].size); |
2c649ca1 SS |
607 | if (r < 0) |
608 | log_debug_errno(r, "Failed to parse SMTP server, ignoring: %m"); | |
609 | break; | |
610 | ||
50018bfa | 611 | case SD_DHCP_OPTION_LPR_SERVER: |
ddb82ec2 | 612 | r = lease_parse_in_addrs(option, len, &lease->servers[SD_DHCP_LEASE_LPR].addr, &lease->servers[SD_DHCP_LEASE_LPR].size); |
50018bfa SS |
613 | if (r < 0) |
614 | log_debug_errno(r, "Failed to parse LPR server, ignoring: %m"); | |
615 | break; | |
616 | ||
22805d92 | 617 | case SD_DHCP_OPTION_STATIC_ROUTE: |
0339cd77 LP |
618 | r = lease_parse_routes(option, len, &lease->static_route, &lease->static_route_size, &lease->static_route_allocated); |
619 | if (r < 0) | |
620 | log_debug_errno(r, "Failed to parse static routes, ignoring: %m"); | |
f5c0c00f TG |
621 | break; |
622 | ||
22805d92 | 623 | case SD_DHCP_OPTION_INTERFACE_MTU: |
0339cd77 LP |
624 | r = lease_parse_u16(option, len, &lease->mtu, 68); |
625 | if (r < 0) | |
626 | log_debug_errno(r, "Failed to parse MTU, ignoring: %m"); | |
955d99ed | 627 | if (lease->mtu < DHCP_DEFAULT_MIN_SIZE) { |
4dd53da9 | 628 | log_debug("MTU value of %" PRIu16 " too small. Using default MTU value of %d instead.", lease->mtu, DHCP_DEFAULT_MIN_SIZE); |
955d99ed MG |
629 | lease->mtu = DHCP_DEFAULT_MIN_SIZE; |
630 | } | |
631 | ||
f5c0c00f TG |
632 | break; |
633 | ||
978c6477 LP |
634 | case SD_DHCP_OPTION_DOMAIN_NAME: |
635 | r = lease_parse_domain(option, len, &lease->domainname); | |
0339cd77 LP |
636 | if (r < 0) { |
637 | log_debug_errno(r, "Failed to parse domain name, ignoring: %m"); | |
638 | return 0; | |
639 | } | |
a6cc569e | 640 | |
784d9b9c | 641 | break; |
784d9b9c | 642 | |
b85bc551 DW |
643 | case SD_DHCP_OPTION_DOMAIN_SEARCH_LIST: |
644 | r = dhcp_lease_parse_search_domains(option, len, &lease->search_domains); | |
645 | if (r < 0) | |
646 | log_debug_errno(r, "Failed to parse Domain Search List, ignoring: %m"); | |
647 | break; | |
648 | ||
978c6477 LP |
649 | case SD_DHCP_OPTION_HOST_NAME: |
650 | r = lease_parse_domain(option, len, &lease->hostname); | |
0339cd77 | 651 | if (r < 0) { |
38b38500 | 652 | log_debug_errno(r, "Failed to parse hostname, ignoring: %m"); |
0339cd77 LP |
653 | return 0; |
654 | } | |
a6cc569e | 655 | |
784d9b9c | 656 | break; |
ce78df79 | 657 | |
22805d92 | 658 | case SD_DHCP_OPTION_ROOT_PATH: |
0339cd77 LP |
659 | r = lease_parse_string(option, len, &lease->root_path); |
660 | if (r < 0) | |
661 | log_debug_errno(r, "Failed to parse root path, ignoring: %m"); | |
662 | break; | |
ce78df79 | 663 | |
22805d92 | 664 | case SD_DHCP_OPTION_RENEWAL_T1_TIME: |
0339cd77 LP |
665 | r = lease_parse_u32(option, len, &lease->t1, 1); |
666 | if (r < 0) | |
667 | log_debug_errno(r, "Failed to parse T1 time, ignoring: %m"); | |
a6cc569e TG |
668 | break; |
669 | ||
22805d92 | 670 | case SD_DHCP_OPTION_REBINDING_T2_TIME: |
0339cd77 LP |
671 | r = lease_parse_u32(option, len, &lease->t2, 1); |
672 | if (r < 0) | |
673 | log_debug_errno(r, "Failed to parse T2 time, ignoring: %m"); | |
a6cc569e | 674 | break; |
e1ea665e | 675 | |
22805d92 | 676 | case SD_DHCP_OPTION_CLASSLESS_STATIC_ROUTE: |
0339cd77 | 677 | r = lease_parse_classless_routes( |
2d03c0b8 LP |
678 | option, len, |
679 | &lease->static_route, | |
680 | &lease->static_route_size, | |
681 | &lease->static_route_allocated); | |
0339cd77 LP |
682 | if (r < 0) |
683 | log_debug_errno(r, "Failed to parse classless routes, ignoring: %m"); | |
684 | break; | |
e43a8393 | 685 | |
22805d92 | 686 | case SD_DHCP_OPTION_NEW_TZDB_TIMEZONE: { |
8eb9058d LP |
687 | _cleanup_free_ char *tz = NULL; |
688 | ||
689 | r = lease_parse_string(option, len, &tz); | |
0339cd77 LP |
690 | if (r < 0) { |
691 | log_debug_errno(r, "Failed to parse timezone option, ignoring: %m"); | |
692 | return 0; | |
693 | } | |
8eb9058d | 694 | |
089fb865 | 695 | if (!timezone_is_valid(tz, LOG_DEBUG)) { |
0339cd77 LP |
696 | log_debug_errno(r, "Timezone is not valid, ignoring: %m"); |
697 | return 0; | |
698 | } | |
8eb9058d | 699 | |
f9ecfd3b | 700 | free_and_replace(lease->timezone, tz); |
0339cd77 | 701 | |
8eb9058d LP |
702 | break; |
703 | } | |
704 | ||
22805d92 | 705 | case SD_DHCP_OPTION_VENDOR_SPECIFIC: |
2d03c0b8 | 706 | |
0339cd77 LP |
707 | if (len <= 0) |
708 | lease->vendor_specific = mfree(lease->vendor_specific); | |
709 | else { | |
710 | void *p; | |
711 | ||
712 | p = memdup(option, len); | |
713 | if (!p) | |
e43a8393 | 714 | return -ENOMEM; |
e43a8393 | 715 | |
0339cd77 LP |
716 | free(lease->vendor_specific); |
717 | lease->vendor_specific = p; | |
718 | } | |
7e753d9d | 719 | |
0339cd77 LP |
720 | lease->vendor_specific_len = len; |
721 | break; | |
7e753d9d | 722 | |
22805d92 | 723 | case SD_DHCP_OPTION_PRIVATE_BASE ... SD_DHCP_OPTION_PRIVATE_LAST: |
7e753d9d AC |
724 | r = dhcp_lease_insert_private_option(lease, code, option, len); |
725 | if (r < 0) | |
726 | return r; | |
0339cd77 LP |
727 | |
728 | break; | |
729 | ||
730 | default: | |
f693e9b3 | 731 | log_debug("Ignoring option DHCP option %"PRIu8" while parsing.", code); |
0339cd77 | 732 | break; |
a6cc569e TG |
733 | } |
734 | ||
735 | return 0; | |
736 | } | |
737 | ||
b85bc551 DW |
738 | /* Parses compressed domain names. */ |
739 | int dhcp_lease_parse_search_domains(const uint8_t *option, size_t len, char ***domains) { | |
740 | _cleanup_strv_free_ char **names = NULL; | |
741 | size_t pos = 0, cnt = 0; | |
742 | int r; | |
743 | ||
744 | assert(domains); | |
745 | assert_return(option && len > 0, -ENODATA); | |
746 | ||
747 | while (pos < len) { | |
748 | _cleanup_free_ char *name = NULL; | |
749 | size_t n = 0, allocated = 0; | |
750 | size_t jump_barrier = pos, next_chunk = 0; | |
751 | bool first = true; | |
752 | ||
753 | for (;;) { | |
754 | uint8_t c; | |
755 | c = option[pos++]; | |
756 | ||
757 | if (c == 0) { | |
758 | /* End of name */ | |
759 | break; | |
760 | } else if (c <= 63) { | |
761 | const char *label; | |
762 | ||
763 | /* Literal label */ | |
764 | label = (const char*) (option + pos); | |
765 | pos += c; | |
766 | if (pos >= len) | |
767 | return -EBADMSG; | |
768 | ||
769 | if (!GREEDY_REALLOC(name, allocated, n + !first + DNS_LABEL_ESCAPED_MAX)) | |
770 | return -ENOMEM; | |
771 | ||
772 | if (first) | |
773 | first = false; | |
774 | else | |
775 | name[n++] = '.'; | |
776 | ||
777 | r = dns_label_escape(label, c, name + n, DNS_LABEL_ESCAPED_MAX); | |
778 | if (r < 0) | |
779 | return r; | |
780 | ||
781 | n += r; | |
782 | } else if ((c & 0xc0) == 0xc0) { | |
783 | /* Pointer */ | |
784 | ||
785 | uint8_t d; | |
786 | uint16_t ptr; | |
787 | ||
788 | if (pos >= len) | |
789 | return -EBADMSG; | |
790 | ||
791 | d = option[pos++]; | |
792 | ptr = (uint16_t) (c & ~0xc0) << 8 | (uint16_t) d; | |
793 | ||
794 | /* Jumps are limited to a "prior occurrence" (RFC-1035 4.1.4) */ | |
795 | if (ptr >= jump_barrier) | |
796 | return -EBADMSG; | |
797 | jump_barrier = ptr; | |
798 | ||
799 | /* Save current location so we don't end up re-parsing what's parsed so far. */ | |
800 | if (next_chunk == 0) | |
801 | next_chunk = pos; | |
802 | ||
803 | pos = ptr; | |
804 | } else | |
805 | return -EBADMSG; | |
806 | } | |
807 | ||
808 | if (!GREEDY_REALLOC(name, allocated, n + 1)) | |
809 | return -ENOMEM; | |
810 | name[n] = 0; | |
811 | ||
812 | r = strv_extend(&names, name); | |
813 | if (r < 0) | |
814 | return r; | |
815 | ||
816 | cnt++; | |
817 | ||
818 | if (next_chunk != 0) | |
819 | pos = next_chunk; | |
820 | } | |
821 | ||
ae2a15bc | 822 | *domains = TAKE_PTR(names); |
b85bc551 DW |
823 | |
824 | return cnt; | |
825 | } | |
826 | ||
0339cd77 | 827 | int dhcp_lease_insert_private_option(sd_dhcp_lease *lease, uint8_t tag, const void *data, uint8_t len) { |
7e753d9d AC |
828 | struct sd_dhcp_raw_option *cur, *option; |
829 | ||
0339cd77 LP |
830 | assert(lease); |
831 | ||
7e753d9d AC |
832 | LIST_FOREACH(options, cur, lease->private_options) { |
833 | if (tag < cur->tag) | |
834 | break; | |
0339cd77 LP |
835 | if (tag == cur->tag) { |
836 | log_debug("Ignoring duplicate option, tagged %i.", tag); | |
7e753d9d AC |
837 | return 0; |
838 | } | |
839 | } | |
840 | ||
841 | option = new(struct sd_dhcp_raw_option, 1); | |
842 | if (!option) | |
843 | return -ENOMEM; | |
844 | ||
845 | option->tag = tag; | |
846 | option->length = len; | |
847 | option->data = memdup(data, len); | |
848 | if (!option->data) { | |
849 | free(option); | |
850 | return -ENOMEM; | |
851 | } | |
852 | ||
853 | LIST_INSERT_BEFORE(options, lease->private_options, cur, option); | |
7e753d9d AC |
854 | return 0; |
855 | } | |
856 | ||
a6cc569e | 857 | int dhcp_lease_new(sd_dhcp_lease **ret) { |
6e00a806 | 858 | sd_dhcp_lease *lease; |
a6cc569e TG |
859 | |
860 | lease = new0(sd_dhcp_lease, 1); | |
861 | if (!lease) | |
862 | return -ENOMEM; | |
863 | ||
3733eec3 | 864 | lease->n_ref = 1; |
a6cc569e TG |
865 | |
866 | *ret = lease; | |
a6cc569e TG |
867 | return 0; |
868 | } | |
fe8db0c5 | 869 | |
bd91b83e | 870 | int dhcp_lease_save(sd_dhcp_lease *lease, const char *lease_file) { |
fe8db0c5 TG |
871 | _cleanup_free_ char *temp_path = NULL; |
872 | _cleanup_fclose_ FILE *f = NULL; | |
a073309f | 873 | struct sd_dhcp_raw_option *option; |
fe8db0c5 | 874 | struct in_addr address; |
a2ba62c7 | 875 | const struct in_addr *addresses; |
e4735228 | 876 | const void *client_id, *data; |
e43a8393 | 877 | size_t client_id_len, data_len; |
189255d2 | 878 | char sbuf[INET_ADDRSTRLEN]; |
fe8db0c5 TG |
879 | const char *string; |
880 | uint16_t mtu; | |
f8693fc7 | 881 | _cleanup_free_ sd_dhcp_route **routes = NULL; |
b85bc551 | 882 | char **search_domains = NULL; |
0339cd77 | 883 | uint32_t t1, t2, lifetime; |
fe8db0c5 TG |
884 | int r; |
885 | ||
886 | assert(lease); | |
887 | assert(lease_file); | |
888 | ||
fe8db0c5 TG |
889 | r = fopen_temporary(lease_file, &f, &temp_path); |
890 | if (r < 0) | |
dacd6cee | 891 | goto fail; |
fe8db0c5 | 892 | |
0d536673 | 893 | (void) fchmod(fileno(f), 0644); |
fe8db0c5 | 894 | |
fe8db0c5 | 895 | fprintf(f, |
0339cd77 | 896 | "# This is private data. Do not parse.\n"); |
fe8db0c5 | 897 | |
0339cd77 LP |
898 | r = sd_dhcp_lease_get_address(lease, &address); |
899 | if (r >= 0) | |
189255d2 | 900 | fprintf(f, "ADDRESS=%s\n", inet_ntop(AF_INET, &address, sbuf, sizeof(sbuf))); |
fe8db0c5 | 901 | |
0339cd77 LP |
902 | r = sd_dhcp_lease_get_netmask(lease, &address); |
903 | if (r >= 0) | |
189255d2 | 904 | fprintf(f, "NETMASK=%s\n", inet_ntop(AF_INET, &address, sbuf, sizeof(sbuf))); |
fe8db0c5 | 905 | |
f8862395 TH |
906 | r = sd_dhcp_lease_get_router(lease, &addresses); |
907 | if (r > 0) { | |
908 | fputs("ROUTER=", f); | |
072320ea | 909 | serialize_in_addrs(f, addresses, r, false, NULL); |
f8862395 TH |
910 | fputc('\n', f); |
911 | } | |
8ddbeaa2 | 912 | |
0ad853bc | 913 | r = sd_dhcp_lease_get_server_identifier(lease, &address); |
109731eb | 914 | if (r >= 0) |
189255d2 | 915 | fprintf(f, "SERVER_ADDRESS=%s\n", inet_ntop(AF_INET, &address, sbuf, sizeof(sbuf))); |
0ad853bc | 916 | |
8e34a618 | 917 | r = sd_dhcp_lease_get_next_server(lease, &address); |
109731eb | 918 | if (r >= 0) |
189255d2 | 919 | fprintf(f, "NEXT_SERVER=%s\n", inet_ntop(AF_INET, &address, sbuf, sizeof(sbuf))); |
8e34a618 | 920 | |
0339cd77 LP |
921 | r = sd_dhcp_lease_get_broadcast(lease, &address); |
922 | if (r >= 0) | |
189255d2 | 923 | fprintf(f, "BROADCAST=%s\n", inet_ntop(AF_INET, &address, sbuf, sizeof(sbuf))); |
0339cd77 | 924 | |
fe8db0c5 TG |
925 | r = sd_dhcp_lease_get_mtu(lease, &mtu); |
926 | if (r >= 0) | |
927 | fprintf(f, "MTU=%" PRIu16 "\n", mtu); | |
928 | ||
0339cd77 LP |
929 | r = sd_dhcp_lease_get_t1(lease, &t1); |
930 | if (r >= 0) | |
931 | fprintf(f, "T1=%" PRIu32 "\n", t1); | |
932 | ||
933 | r = sd_dhcp_lease_get_t2(lease, &t2); | |
109731eb | 934 | if (r >= 0) |
0339cd77 LP |
935 | fprintf(f, "T2=%" PRIu32 "\n", t2); |
936 | ||
937 | r = sd_dhcp_lease_get_lifetime(lease, &lifetime); | |
938 | if (r >= 0) | |
939 | fprintf(f, "LIFETIME=%" PRIu32 "\n", lifetime); | |
940 | ||
941 | r = sd_dhcp_lease_get_dns(lease, &addresses); | |
942 | if (r > 0) { | |
0d536673 | 943 | fputs("DNS=", f); |
072320ea | 944 | serialize_in_addrs(f, addresses, r, false, NULL); |
f8862395 | 945 | fputc('\n', f); |
0339cd77 | 946 | } |
109731eb | 947 | |
a2ba62c7 | 948 | r = sd_dhcp_lease_get_ntp(lease, &addresses); |
0339cd77 | 949 | if (r > 0) { |
0d536673 | 950 | fputs("NTP=", f); |
072320ea | 951 | serialize_in_addrs(f, addresses, r, false, NULL); |
f8862395 | 952 | fputc('\n', f); |
0339cd77 | 953 | } |
fe8db0c5 | 954 | |
299d578f SS |
955 | r = sd_dhcp_lease_get_sip(lease, &addresses); |
956 | if (r > 0) { | |
957 | fputs("SIP=", f); | |
958 | serialize_in_addrs(f, addresses, r, false, NULL); | |
959 | fputc('\n', f); | |
960 | } | |
961 | ||
fe8db0c5 TG |
962 | r = sd_dhcp_lease_get_domainname(lease, &string); |
963 | if (r >= 0) | |
964 | fprintf(f, "DOMAINNAME=%s\n", string); | |
965 | ||
b85bc551 DW |
966 | r = sd_dhcp_lease_get_search_domains(lease, &search_domains); |
967 | if (r > 0) { | |
0d536673 | 968 | fputs("DOMAIN_SEARCH_LIST=", f); |
b85bc551 | 969 | fputstrv(f, search_domains, NULL, NULL); |
f8862395 | 970 | fputc('\n', f); |
b85bc551 DW |
971 | } |
972 | ||
fe8db0c5 TG |
973 | r = sd_dhcp_lease_get_hostname(lease, &string); |
974 | if (r >= 0) | |
975 | fprintf(f, "HOSTNAME=%s\n", string); | |
976 | ||
ce78df79 TG |
977 | r = sd_dhcp_lease_get_root_path(lease, &string); |
978 | if (r >= 0) | |
979 | fprintf(f, "ROOT_PATH=%s\n", string); | |
980 | ||
a2ba62c7 | 981 | r = sd_dhcp_lease_get_routes(lease, &routes); |
0339cd77 | 982 | if (r > 0) |
a2ba62c7 | 983 | serialize_dhcp_routes(f, "ROUTES", routes, r); |
e1ea665e | 984 | |
8eb9058d LP |
985 | r = sd_dhcp_lease_get_timezone(lease, &string); |
986 | if (r >= 0) | |
987 | fprintf(f, "TIMEZONE=%s\n", string); | |
988 | ||
e37f74a6 DW |
989 | r = sd_dhcp_lease_get_client_id(lease, &client_id, &client_id_len); |
990 | if (r >= 0) { | |
3587161a | 991 | _cleanup_free_ char *client_id_hex = NULL; |
e37f74a6 | 992 | |
dde8bb32 | 993 | client_id_hex = hexmem(client_id, client_id_len); |
e37f74a6 DW |
994 | if (!client_id_hex) { |
995 | r = -ENOMEM; | |
dacd6cee | 996 | goto fail; |
e37f74a6 DW |
997 | } |
998 | fprintf(f, "CLIENTID=%s\n", client_id_hex); | |
999 | } | |
1000 | ||
e43a8393 BG |
1001 | r = sd_dhcp_lease_get_vendor_specific(lease, &data, &data_len); |
1002 | if (r >= 0) { | |
1003 | _cleanup_free_ char *option_hex = NULL; | |
1004 | ||
1005 | option_hex = hexmem(data, data_len); | |
1006 | if (!option_hex) { | |
1007 | r = -ENOMEM; | |
dacd6cee | 1008 | goto fail; |
e43a8393 BG |
1009 | } |
1010 | fprintf(f, "VENDOR_SPECIFIC=%s\n", option_hex); | |
1011 | } | |
1012 | ||
a073309f | 1013 | LIST_FOREACH(options, option, lease->private_options) { |
dbcb4a90 | 1014 | char key[STRLEN("OPTION_000")+1]; |
0339cd77 | 1015 | |
d054f0a4 | 1016 | xsprintf(key, "OPTION_%" PRIu8, option->tag); |
a073309f AC |
1017 | r = serialize_dhcp_option(f, key, option->data, option->length); |
1018 | if (r < 0) | |
1019 | goto fail; | |
1020 | } | |
1021 | ||
dacd6cee LP |
1022 | r = fflush_and_check(f); |
1023 | if (r < 0) | |
1024 | goto fail; | |
fe8db0c5 | 1025 | |
dacd6cee | 1026 | if (rename(temp_path, lease_file) < 0) { |
fe8db0c5 | 1027 | r = -errno; |
dacd6cee | 1028 | goto fail; |
fe8db0c5 TG |
1029 | } |
1030 | ||
dacd6cee LP |
1031 | return 0; |
1032 | ||
1033 | fail: | |
1034 | if (temp_path) | |
1035 | (void) unlink(temp_path); | |
fe8db0c5 | 1036 | |
dacd6cee | 1037 | return log_error_errno(r, "Failed to save lease data %s: %m", lease_file); |
fe8db0c5 TG |
1038 | } |
1039 | ||
bd91b83e | 1040 | int dhcp_lease_load(sd_dhcp_lease **ret, const char *lease_file) { |
0339cd77 | 1041 | |
4afd3348 | 1042 | _cleanup_(sd_dhcp_lease_unrefp) sd_dhcp_lease *lease = NULL; |
0339cd77 LP |
1043 | _cleanup_free_ char |
1044 | *address = NULL, | |
1045 | *router = NULL, | |
1046 | *netmask = NULL, | |
1047 | *server_address = NULL, | |
1048 | *next_server = NULL, | |
1049 | *broadcast = NULL, | |
1050 | *dns = NULL, | |
1051 | *ntp = NULL, | |
299d578f | 1052 | *sip = NULL, |
ddb82ec2 LP |
1053 | *pop3 = NULL, |
1054 | *smtp = NULL, | |
1055 | *lpr = NULL, | |
0339cd77 LP |
1056 | *mtu = NULL, |
1057 | *routes = NULL, | |
b85bc551 | 1058 | *domains = NULL, |
0339cd77 LP |
1059 | *client_id_hex = NULL, |
1060 | *vendor_specific_hex = NULL, | |
1061 | *lifetime = NULL, | |
1062 | *t1 = NULL, | |
1063 | *t2 = NULL, | |
22805d92 | 1064 | *options[SD_DHCP_OPTION_PRIVATE_LAST - SD_DHCP_OPTION_PRIVATE_BASE + 1] = {}; |
0339cd77 | 1065 | |
a073309f | 1066 | int r, i; |
fe8db0c5 TG |
1067 | |
1068 | assert(lease_file); | |
1069 | assert(ret); | |
1070 | ||
1071 | r = dhcp_lease_new(&lease); | |
1072 | if (r < 0) | |
1073 | return r; | |
1074 | ||
aa8fbc74 | 1075 | r = parse_env_file(NULL, lease_file, |
fe8db0c5 TG |
1076 | "ADDRESS", &address, |
1077 | "ROUTER", &router, | |
1078 | "NETMASK", &netmask, | |
fd1f3b3e | 1079 | "SERVER_ADDRESS", &server_address, |
8e34a618 | 1080 | "NEXT_SERVER", &next_server, |
0339cd77 | 1081 | "BROADCAST", &broadcast, |
109731eb TG |
1082 | "DNS", &dns, |
1083 | "NTP", &ntp, | |
299d578f | 1084 | "SIP", &sip, |
ddb82ec2 LP |
1085 | "POP3", &pop3, |
1086 | "SMTP", &smtp, | |
1087 | "LPR", &lpr, | |
fe8db0c5 TG |
1088 | "MTU", &mtu, |
1089 | "DOMAINNAME", &lease->domainname, | |
1090 | "HOSTNAME", &lease->hostname, | |
b85bc551 | 1091 | "DOMAIN_SEARCH_LIST", &domains, |
ce78df79 | 1092 | "ROOT_PATH", &lease->root_path, |
e1ea665e | 1093 | "ROUTES", &routes, |
e37f74a6 | 1094 | "CLIENTID", &client_id_hex, |
8eb9058d | 1095 | "TIMEZONE", &lease->timezone, |
e43a8393 | 1096 | "VENDOR_SPECIFIC", &vendor_specific_hex, |
0339cd77 LP |
1097 | "LIFETIME", &lifetime, |
1098 | "T1", &t1, | |
1099 | "T2", &t2, | |
a073309f AC |
1100 | "OPTION_224", &options[0], |
1101 | "OPTION_225", &options[1], | |
1102 | "OPTION_226", &options[2], | |
1103 | "OPTION_227", &options[3], | |
1104 | "OPTION_228", &options[4], | |
1105 | "OPTION_229", &options[5], | |
1106 | "OPTION_230", &options[6], | |
1107 | "OPTION_231", &options[7], | |
1108 | "OPTION_232", &options[8], | |
1109 | "OPTION_233", &options[9], | |
1110 | "OPTION_234", &options[10], | |
1111 | "OPTION_235", &options[11], | |
1112 | "OPTION_236", &options[12], | |
1113 | "OPTION_237", &options[13], | |
1114 | "OPTION_238", &options[14], | |
1115 | "OPTION_239", &options[15], | |
1116 | "OPTION_240", &options[16], | |
1117 | "OPTION_241", &options[17], | |
1118 | "OPTION_242", &options[18], | |
1119 | "OPTION_243", &options[19], | |
1120 | "OPTION_244", &options[20], | |
1121 | "OPTION_245", &options[21], | |
1122 | "OPTION_246", &options[22], | |
1123 | "OPTION_247", &options[23], | |
1124 | "OPTION_248", &options[24], | |
1125 | "OPTION_249", &options[25], | |
1126 | "OPTION_250", &options[26], | |
1127 | "OPTION_251", &options[27], | |
1128 | "OPTION_252", &options[28], | |
1129 | "OPTION_253", &options[29], | |
13df9c39 | 1130 | "OPTION_254", &options[30]); |
fe8db0c5 TG |
1131 | if (r < 0) |
1132 | return r; | |
1133 | ||
0339cd77 LP |
1134 | if (address) { |
1135 | r = inet_pton(AF_INET, address, &lease->address); | |
1136 | if (r <= 0) | |
e26ea7fc | 1137 | log_debug("Failed to parse address %s, ignoring.", address); |
0339cd77 | 1138 | } |
fe8db0c5 | 1139 | |
8ddbeaa2 | 1140 | if (router) { |
f8862395 TH |
1141 | r = deserialize_in_addrs(&lease->router, router); |
1142 | if (r < 0) | |
1143 | log_debug_errno(r, "Failed to deserialize router addresses %s, ignoring: %m", router); | |
1144 | else | |
1145 | lease->router_size = r; | |
8ddbeaa2 | 1146 | } |
fe8db0c5 | 1147 | |
0339cd77 LP |
1148 | if (netmask) { |
1149 | r = inet_pton(AF_INET, netmask, &lease->subnet_mask); | |
1150 | if (r <= 0) | |
e26ea7fc | 1151 | log_debug("Failed to parse netmask %s, ignoring.", netmask); |
0339cd77 LP |
1152 | else |
1153 | lease->have_subnet_mask = true; | |
1154 | } | |
fe8db0c5 | 1155 | |
0ad853bc | 1156 | if (server_address) { |
0339cd77 LP |
1157 | r = inet_pton(AF_INET, server_address, &lease->server_address); |
1158 | if (r <= 0) | |
e26ea7fc | 1159 | log_debug("Failed to parse server address %s, ignoring.", server_address); |
0ad853bc TG |
1160 | } |
1161 | ||
8e34a618 | 1162 | if (next_server) { |
0339cd77 LP |
1163 | r = inet_pton(AF_INET, next_server, &lease->next_server); |
1164 | if (r <= 0) | |
e26ea7fc | 1165 | log_debug("Failed to parse next server %s, ignoring.", next_server); |
0339cd77 | 1166 | } |
8e34a618 | 1167 | |
0339cd77 LP |
1168 | if (broadcast) { |
1169 | r = inet_pton(AF_INET, broadcast, &lease->broadcast); | |
1170 | if (r <= 0) | |
e26ea7fc | 1171 | log_debug("Failed to parse broadcast address %s, ignoring.", broadcast); |
0339cd77 LP |
1172 | else |
1173 | lease->have_broadcast = true; | |
8e34a618 TG |
1174 | } |
1175 | ||
109731eb | 1176 | if (dns) { |
ddb82ec2 | 1177 | r = deserialize_in_addrs(&lease->servers[SD_DHCP_LEASE_DNS].addr, dns); |
109731eb | 1178 | if (r < 0) |
0339cd77 LP |
1179 | log_debug_errno(r, "Failed to deserialize DNS servers %s, ignoring: %m", dns); |
1180 | else | |
ddb82ec2 | 1181 | lease->servers[SD_DHCP_LEASE_DNS].size = r; |
109731eb TG |
1182 | } |
1183 | ||
1184 | if (ntp) { | |
ddb82ec2 | 1185 | r = deserialize_in_addrs(&lease->servers[SD_DHCP_LEASE_NTP].addr, ntp); |
109731eb | 1186 | if (r < 0) |
0339cd77 LP |
1187 | log_debug_errno(r, "Failed to deserialize NTP servers %s, ignoring: %m", ntp); |
1188 | else | |
ddb82ec2 | 1189 | lease->servers[SD_DHCP_LEASE_NTP].size = r; |
109731eb TG |
1190 | } |
1191 | ||
299d578f | 1192 | if (sip) { |
ddb82ec2 | 1193 | r = deserialize_in_addrs(&lease->servers[SD_DHCP_LEASE_SIP].addr, sip); |
299d578f | 1194 | if (r < 0) |
850fd9b8 | 1195 | log_debug_errno(r, "Failed to deserialize SIP servers %s, ignoring: %m", sip); |
299d578f | 1196 | else |
ddb82ec2 | 1197 | lease->servers[SD_DHCP_LEASE_SIP].size = r; |
299d578f SS |
1198 | } |
1199 | ||
ddb82ec2 LP |
1200 | if (pop3) { |
1201 | r = deserialize_in_addrs(&lease->servers[SD_DHCP_LEASE_POP3].addr, pop3); | |
f678ac7e | 1202 | if (r < 0) |
ddb82ec2 | 1203 | log_debug_errno(r, "Failed to deserialize POP3 server %s, ignoring: %m", pop3); |
f678ac7e | 1204 | else |
ddb82ec2 | 1205 | lease->servers[SD_DHCP_LEASE_POP3].size = r; |
f678ac7e SS |
1206 | } |
1207 | ||
ddb82ec2 LP |
1208 | if (smtp) { |
1209 | r = deserialize_in_addrs(&lease->servers[SD_DHCP_LEASE_SMTP].addr, smtp); | |
2c649ca1 | 1210 | if (r < 0) |
ddb82ec2 | 1211 | log_debug_errno(r, "Failed to deserialize SMTP server %s, ignoring: %m", smtp); |
2c649ca1 | 1212 | else |
ddb82ec2 | 1213 | lease->servers[SD_DHCP_LEASE_SMTP].size = r; |
2c649ca1 SS |
1214 | } |
1215 | ||
ddb82ec2 LP |
1216 | if (lpr) { |
1217 | r = deserialize_in_addrs(&lease->servers[SD_DHCP_LEASE_LPR].addr, lpr); | |
50018bfa | 1218 | if (r < 0) |
ddb82ec2 | 1219 | log_debug_errno(r, "Failed to deserialize LPR server %s, ignoring: %m", lpr); |
50018bfa | 1220 | else |
ddb82ec2 | 1221 | lease->servers[SD_DHCP_LEASE_LPR].size = r; |
50018bfa SS |
1222 | } |
1223 | ||
fe8db0c5 | 1224 | if (mtu) { |
0339cd77 LP |
1225 | r = safe_atou16(mtu, &lease->mtu); |
1226 | if (r < 0) | |
1227 | log_debug_errno(r, "Failed to parse MTU %s, ignoring: %m", mtu); | |
fe8db0c5 TG |
1228 | } |
1229 | ||
b85bc551 DW |
1230 | if (domains) { |
1231 | _cleanup_strv_free_ char **a = NULL; | |
1232 | a = strv_split(domains, " "); | |
1233 | if (!a) | |
1234 | return -ENOMEM; | |
1235 | ||
1236 | if (!strv_isempty(a)) { | |
1237 | lease->search_domains = a; | |
1238 | a = NULL; | |
1239 | } | |
1240 | } | |
1241 | ||
e1ea665e | 1242 | if (routes) { |
0339cd77 LP |
1243 | r = deserialize_dhcp_routes( |
1244 | &lease->static_route, | |
1245 | &lease->static_route_size, | |
1246 | &lease->static_route_allocated, | |
1247 | routes); | |
1248 | if (r < 0) | |
1249 | log_debug_errno(r, "Failed to parse DHCP routes %s, ignoring: %m", routes); | |
1250 | } | |
1251 | ||
1252 | if (lifetime) { | |
1253 | r = safe_atou32(lifetime, &lease->lifetime); | |
1254 | if (r < 0) | |
1255 | log_debug_errno(r, "Failed to parse lifetime %s, ignoring: %m", lifetime); | |
1256 | } | |
1257 | ||
1258 | if (t1) { | |
1259 | r = safe_atou32(t1, &lease->t1); | |
1260 | if (r < 0) | |
1261 | log_debug_errno(r, "Failed to parse T1 %s, ignoring: %m", t1); | |
1262 | } | |
1263 | ||
1264 | if (t2) { | |
1265 | r = safe_atou32(t2, &lease->t2); | |
e1ea665e | 1266 | if (r < 0) |
0339cd77 | 1267 | log_debug_errno(r, "Failed to parse T2 %s, ignoring: %m", t2); |
e1ea665e EY |
1268 | } |
1269 | ||
e37f74a6 | 1270 | if (client_id_hex) { |
ce088d6f | 1271 | r = unhexmem(client_id_hex, (size_t) -1, &lease->client_id, &lease->client_id_len); |
30494563 | 1272 | if (r < 0) |
0339cd77 | 1273 | log_debug_errno(r, "Failed to parse client ID %s, ignoring: %m", client_id_hex); |
e37f74a6 DW |
1274 | } |
1275 | ||
e43a8393 | 1276 | if (vendor_specific_hex) { |
ce088d6f | 1277 | r = unhexmem(vendor_specific_hex, (size_t) -1, &lease->vendor_specific, &lease->vendor_specific_len); |
e43a8393 | 1278 | if (r < 0) |
0339cd77 | 1279 | log_debug_errno(r, "Failed to parse vendor specific data %s, ignoring: %m", vendor_specific_hex); |
e43a8393 BG |
1280 | } |
1281 | ||
22805d92 | 1282 | for (i = 0; i <= SD_DHCP_OPTION_PRIVATE_LAST - SD_DHCP_OPTION_PRIVATE_BASE; i++) { |
e4735228 | 1283 | _cleanup_free_ void *data = NULL; |
a073309f AC |
1284 | size_t len; |
1285 | ||
1286 | if (!options[i]) | |
1287 | continue; | |
1288 | ||
ce088d6f | 1289 | r = unhexmem(options[i], (size_t) -1, &data, &len); |
0339cd77 LP |
1290 | if (r < 0) { |
1291 | log_debug_errno(r, "Failed to parse private DHCP option %s, ignoring: %m", options[i]); | |
1292 | continue; | |
1293 | } | |
a073309f | 1294 | |
22805d92 | 1295 | r = dhcp_lease_insert_private_option(lease, SD_DHCP_OPTION_PRIVATE_BASE + i, data, len); |
626be147 | 1296 | if (r < 0) |
a073309f AC |
1297 | return r; |
1298 | } | |
1299 | ||
1cc6c93a | 1300 | *ret = TAKE_PTR(lease); |
fe8db0c5 TG |
1301 | |
1302 | return 0; | |
1303 | } | |
9e64dd72 TG |
1304 | |
1305 | int dhcp_lease_set_default_subnet_mask(sd_dhcp_lease *lease) { | |
0339cd77 | 1306 | struct in_addr address, mask; |
df40eee8 | 1307 | int r; |
9e64dd72 TG |
1308 | |
1309 | assert(lease); | |
9e64dd72 | 1310 | |
0339cd77 LP |
1311 | if (lease->address == 0) |
1312 | return -ENODATA; | |
1313 | ||
df40eee8 | 1314 | address.s_addr = lease->address; |
9e64dd72 TG |
1315 | |
1316 | /* fall back to the default subnet masks based on address class */ | |
5a941f5f | 1317 | r = in4_addr_default_subnet_mask(&address, &mask); |
df40eee8 TG |
1318 | if (r < 0) |
1319 | return r; | |
9e64dd72 | 1320 | |
df40eee8 | 1321 | lease->subnet_mask = mask.s_addr; |
0339cd77 | 1322 | lease->have_subnet_mask = true; |
9e64dd72 TG |
1323 | |
1324 | return 0; | |
1325 | } | |
e37f74a6 | 1326 | |
0339cd77 | 1327 | int sd_dhcp_lease_get_client_id(sd_dhcp_lease *lease, const void **client_id, size_t *client_id_len) { |
e37f74a6 DW |
1328 | assert_return(lease, -EINVAL); |
1329 | assert_return(client_id, -EINVAL); | |
1330 | assert_return(client_id_len, -EINVAL); | |
1331 | ||
0339cd77 LP |
1332 | if (!lease->client_id) |
1333 | return -ENODATA; | |
1334 | ||
e37f74a6 DW |
1335 | *client_id = lease->client_id; |
1336 | *client_id_len = lease->client_id_len; | |
0339cd77 | 1337 | |
e37f74a6 DW |
1338 | return 0; |
1339 | } | |
1340 | ||
0339cd77 | 1341 | int dhcp_lease_set_client_id(sd_dhcp_lease *lease, const void *client_id, size_t client_id_len) { |
e37f74a6 | 1342 | assert_return(lease, -EINVAL); |
0339cd77 LP |
1343 | assert_return(client_id || client_id_len <= 0, -EINVAL); |
1344 | ||
1345 | if (client_id_len <= 0) | |
1346 | lease->client_id = mfree(lease->client_id); | |
1347 | else { | |
1348 | void *p; | |
e37f74a6 | 1349 | |
0339cd77 LP |
1350 | p = memdup(client_id, client_id_len); |
1351 | if (!p) | |
1352 | return -ENOMEM; | |
e37f74a6 | 1353 | |
0339cd77 LP |
1354 | free(lease->client_id); |
1355 | lease->client_id = p; | |
e37f74a6 DW |
1356 | lease->client_id_len = client_id_len; |
1357 | } | |
1358 | ||
1359 | return 0; | |
1360 | } | |
8eb9058d | 1361 | |
64d6c229 | 1362 | int sd_dhcp_lease_get_timezone(sd_dhcp_lease *lease, const char **tz) { |
8eb9058d | 1363 | assert_return(lease, -EINVAL); |
64d6c229 | 1364 | assert_return(tz, -EINVAL); |
8eb9058d LP |
1365 | |
1366 | if (!lease->timezone) | |
0339cd77 | 1367 | return -ENODATA; |
8eb9058d | 1368 | |
64d6c229 | 1369 | *tz = lease->timezone; |
8eb9058d LP |
1370 | return 0; |
1371 | } | |
f8693fc7 BG |
1372 | |
1373 | int sd_dhcp_route_get_destination(sd_dhcp_route *route, struct in_addr *destination) { | |
1374 | assert_return(route, -EINVAL); | |
1375 | assert_return(destination, -EINVAL); | |
1376 | ||
1377 | *destination = route->dst_addr; | |
1378 | return 0; | |
1379 | } | |
1380 | ||
1381 | int sd_dhcp_route_get_destination_prefix_length(sd_dhcp_route *route, uint8_t *length) { | |
1382 | assert_return(route, -EINVAL); | |
1383 | assert_return(length, -EINVAL); | |
1384 | ||
1385 | *length = route->dst_prefixlen; | |
1386 | return 0; | |
1387 | } | |
1388 | ||
1389 | int sd_dhcp_route_get_gateway(sd_dhcp_route *route, struct in_addr *gateway) { | |
1390 | assert_return(route, -EINVAL); | |
1391 | assert_return(gateway, -EINVAL); | |
1392 | ||
1393 | *gateway = route->gw_addr; | |
1394 | return 0; | |
1395 | } | |
cf6f5bb5 TH |
1396 | |
1397 | int sd_dhcp_route_get_option(sd_dhcp_route *route) { | |
1398 | assert_return(route, -EINVAL); | |
1399 | ||
1400 | return route->option; | |
1401 | } |