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53e1b683 | 1 | /* SPDX-License-Identifier: LGPL-2.1+ */ |
139b011a | 2 | /*** |
810adae9 | 3 | Copyright © 2014-2015 Intel Corporation. All rights reserved. |
139b011a PF |
4 | ***/ |
5 | ||
6 | #include <errno.h> | |
7 | #include <string.h> | |
631bbe71 | 8 | #include <sys/ioctl.h> |
76253e73 | 9 | #include <linux/if_infiniband.h> |
139b011a | 10 | |
139b011a | 11 | #include "sd-dhcp6-client.h" |
07630cea | 12 | |
b5efdb8a | 13 | #include "alloc-util.h" |
07630cea | 14 | #include "dhcp-identifier.h" |
f12abb48 | 15 | #include "dhcp6-internal.h" |
631bbe71 | 16 | #include "dhcp6-lease-internal.h" |
07630cea | 17 | #include "dhcp6-protocol.h" |
8006aa32 | 18 | #include "dns-domain.h" |
c9393e8c | 19 | #include "event-util.h" |
3ffd4af2 | 20 | #include "fd-util.h" |
8006aa32 | 21 | #include "hostname-util.h" |
c601ebf7 | 22 | #include "in-addr-util.h" |
07630cea LP |
23 | #include "network-internal.h" |
24 | #include "random-util.h" | |
4edc2c9b | 25 | #include "socket-util.h" |
8b43440b | 26 | #include "string-table.h" |
07630cea | 27 | #include "util.h" |
139b011a | 28 | |
76253e73 DW |
29 | #define MAX_MAC_ADDR_LEN INFINIBAND_ALEN |
30 | ||
f311a62b PF |
31 | /* what to request from the server, addresses (IA_NA) and/or prefixes (IA_PD) */ |
32 | enum { | |
33 | DHCP6_REQUEST_IA_NA = 1, | |
34 | DHCP6_REQUEST_IA_TA = 2, /* currently not used */ | |
35 | DHCP6_REQUEST_IA_PD = 4, | |
36 | }; | |
37 | ||
139b011a | 38 | struct sd_dhcp6_client { |
3733eec3 | 39 | unsigned n_ref; |
139b011a PF |
40 | |
41 | enum DHCP6State state; | |
42 | sd_event *event; | |
43 | int event_priority; | |
2f8e7633 | 44 | int ifindex; |
c601ebf7 | 45 | struct in6_addr local_address; |
76253e73 DW |
46 | uint8_t mac_addr[MAX_MAC_ADDR_LEN]; |
47 | size_t mac_addr_len; | |
48 | uint16_t arp_type; | |
f12abb48 | 49 | DHCP6IA ia_na; |
dce6563f | 50 | DHCP6IA ia_pd; |
9a7225de PF |
51 | sd_event_source *timeout_t1; |
52 | sd_event_source *timeout_t2; | |
1346489f | 53 | unsigned request; |
a9aff361 | 54 | be32_t transaction_id; |
346e13a2 | 55 | usec_t transaction_start; |
631bbe71 | 56 | struct sd_dhcp6_lease *lease; |
a9aff361 | 57 | int fd; |
bbfa43ca | 58 | bool information_request; |
0e408b82 | 59 | bool has_iaid; |
da6fe470 PF |
60 | be16_t *req_opts; |
61 | size_t req_opts_allocated; | |
62 | size_t req_opts_len; | |
8006aa32 | 63 | char *fqdn; |
a9aff361 | 64 | sd_event_source *receive_message; |
d1b0afe3 PF |
65 | usec_t retransmit_time; |
66 | uint8_t retransmit_count; | |
67 | sd_event_source *timeout_resend; | |
68 | sd_event_source *timeout_resend_expire; | |
45aa74c7 | 69 | sd_dhcp6_client_callback_t callback; |
139b011a | 70 | void *userdata; |
764aad62 | 71 | struct duid duid; |
66eac120 | 72 | size_t duid_len; |
139b011a PF |
73 | }; |
74 | ||
da6fe470 | 75 | static const uint16_t default_req_opts[] = { |
2c1ab8ca BG |
76 | SD_DHCP6_OPTION_DNS_SERVERS, |
77 | SD_DHCP6_OPTION_DOMAIN_LIST, | |
78 | SD_DHCP6_OPTION_NTP_SERVER, | |
79 | SD_DHCP6_OPTION_SNTP_SERVERS, | |
da6fe470 PF |
80 | }; |
81 | ||
a9aff361 PF |
82 | const char * dhcp6_message_type_table[_DHCP6_MESSAGE_MAX] = { |
83 | [DHCP6_SOLICIT] = "SOLICIT", | |
84 | [DHCP6_ADVERTISE] = "ADVERTISE", | |
85 | [DHCP6_REQUEST] = "REQUEST", | |
86 | [DHCP6_CONFIRM] = "CONFIRM", | |
87 | [DHCP6_RENEW] = "RENEW", | |
88 | [DHCP6_REBIND] = "REBIND", | |
89 | [DHCP6_REPLY] = "REPLY", | |
90 | [DHCP6_RELEASE] = "RELEASE", | |
91 | [DHCP6_DECLINE] = "DECLINE", | |
92 | [DHCP6_RECONFIGURE] = "RECONFIGURE", | |
93 | [DHCP6_INFORMATION_REQUEST] = "INFORMATION-REQUEST", | |
94 | [DHCP6_RELAY_FORW] = "RELAY-FORW", | |
95 | [DHCP6_RELAY_REPL] = "RELAY-REPL", | |
96 | }; | |
97 | ||
98 | DEFINE_STRING_TABLE_LOOKUP(dhcp6_message_type, int); | |
99 | ||
631bbe71 PF |
100 | const char * dhcp6_message_status_table[_DHCP6_STATUS_MAX] = { |
101 | [DHCP6_STATUS_SUCCESS] = "Success", | |
102 | [DHCP6_STATUS_UNSPEC_FAIL] = "Unspecified failure", | |
103 | [DHCP6_STATUS_NO_ADDRS_AVAIL] = "No addresses available", | |
104 | [DHCP6_STATUS_NO_BINDING] = "Binding unavailable", | |
105 | [DHCP6_STATUS_NOT_ON_LINK] = "Not on link", | |
106 | [DHCP6_STATUS_USE_MULTICAST] = "Use multicast", | |
107 | }; | |
108 | ||
109 | DEFINE_STRING_TABLE_LOOKUP(dhcp6_message_status, int); | |
110 | ||
3f0c075f | 111 | #define DHCP6_CLIENT_DONT_DESTROY(client) \ |
4afd3348 | 112 | _cleanup_(sd_dhcp6_client_unrefp) _unused_ sd_dhcp6_client *_dont_destroy_##client = sd_dhcp6_client_ref(client) |
3f0c075f | 113 | |
c3e2adea PF |
114 | static int client_start(sd_dhcp6_client *client, enum DHCP6State state); |
115 | ||
4b558378 ZJS |
116 | int sd_dhcp6_client_set_callback( |
117 | sd_dhcp6_client *client, | |
118 | sd_dhcp6_client_callback_t cb, | |
119 | void *userdata) { | |
45aa74c7 | 120 | |
139b011a PF |
121 | assert_return(client, -EINVAL); |
122 | ||
45aa74c7 | 123 | client->callback = cb; |
139b011a PF |
124 | client->userdata = userdata; |
125 | ||
126 | return 0; | |
127 | } | |
128 | ||
2f8e7633 | 129 | int sd_dhcp6_client_set_ifindex(sd_dhcp6_client *client, int ifindex) { |
139b011a | 130 | |
2f8e7633 LP |
131 | assert_return(client, -EINVAL); |
132 | assert_return(ifindex >= -1, -EINVAL); | |
d7c9c21f PF |
133 | assert_return(IN_SET(client->state, DHCP6_STATE_STOPPED), -EBUSY); |
134 | ||
2f8e7633 | 135 | client->ifindex = ifindex; |
139b011a PF |
136 | return 0; |
137 | } | |
138 | ||
4b558378 ZJS |
139 | int sd_dhcp6_client_set_local_address( |
140 | sd_dhcp6_client *client, | |
141 | const struct in6_addr *local_address) { | |
142 | ||
c601ebf7 TG |
143 | assert_return(client, -EINVAL); |
144 | assert_return(local_address, -EINVAL); | |
145 | assert_return(in_addr_is_link_local(AF_INET6, (const union in_addr_union *) local_address) > 0, -EINVAL); | |
146 | ||
147 | assert_return(IN_SET(client->state, DHCP6_STATE_STOPPED), -EBUSY); | |
148 | ||
149 | client->local_address = *local_address; | |
150 | ||
151 | return 0; | |
152 | } | |
153 | ||
0ae0e5cd LP |
154 | int sd_dhcp6_client_set_mac( |
155 | sd_dhcp6_client *client, | |
156 | const uint8_t *addr, size_t addr_len, | |
157 | uint16_t arp_type) { | |
158 | ||
139b011a | 159 | assert_return(client, -EINVAL); |
76253e73 DW |
160 | assert_return(addr, -EINVAL); |
161 | assert_return(addr_len > 0 && addr_len <= MAX_MAC_ADDR_LEN, -EINVAL); | |
162 | assert_return(arp_type > 0, -EINVAL); | |
163 | ||
d7c9c21f PF |
164 | assert_return(IN_SET(client->state, DHCP6_STATE_STOPPED), -EBUSY); |
165 | ||
76253e73 DW |
166 | if (arp_type == ARPHRD_ETHER) |
167 | assert_return(addr_len == ETH_ALEN, -EINVAL); | |
168 | else if (arp_type == ARPHRD_INFINIBAND) | |
169 | assert_return(addr_len == INFINIBAND_ALEN, -EINVAL); | |
139b011a | 170 | else |
76253e73 DW |
171 | return -EINVAL; |
172 | ||
173 | if (client->mac_addr_len == addr_len && | |
174 | memcmp(&client->mac_addr, addr, addr_len) == 0) | |
175 | return 0; | |
176 | ||
177 | memcpy(&client->mac_addr, addr, addr_len); | |
178 | client->mac_addr_len = addr_len; | |
179 | client->arp_type = arp_type; | |
139b011a PF |
180 | |
181 | return 0; | |
182 | } | |
183 | ||
0ae0e5cd | 184 | static int client_ensure_duid(sd_dhcp6_client *client) { |
cc22955c TH |
185 | if (client->duid_len != 0) |
186 | return 0; | |
0ae0e5cd | 187 | |
cc22955c TH |
188 | return dhcp_identifier_set_duid_en(&client->duid, &client->duid_len); |
189 | } | |
190 | ||
d7df2fd3 ZJS |
191 | /** |
192 | * Sets DUID. If duid is non-null, the DUID is set to duid_type + duid | |
193 | * without further modification. Otherwise, if duid_type is supported, DUID | |
194 | * is set based on that type. Otherwise, an error is returned. | |
195 | */ | |
7e90a499 | 196 | static int dhcp6_client_set_duid_internal( |
4b558378 ZJS |
197 | sd_dhcp6_client *client, |
198 | uint16_t duid_type, | |
f7a92d1a | 199 | const void *duid, |
7e90a499 YW |
200 | size_t duid_len, |
201 | usec_t llt_time) { | |
413708d1 | 202 | int r; |
27eba50e | 203 | |
66eac120 | 204 | assert_return(client, -EINVAL); |
d7df2fd3 | 205 | assert_return(duid_len == 0 || duid != NULL, -EINVAL); |
afec4539 | 206 | assert_return(IN_SET(client->state, DHCP6_STATE_STOPPED), -EBUSY); |
c83321e6 | 207 | |
d7df2fd3 | 208 | if (duid != NULL) { |
413708d1 VK |
209 | r = dhcp_validate_duid_len(duid_type, duid_len); |
210 | if (r < 0) | |
211 | return r; | |
d7df2fd3 | 212 | |
413708d1 VK |
213 | client->duid.type = htobe16(duid_type); |
214 | memcpy(&client->duid.raw.data, duid, duid_len); | |
d7df2fd3 | 215 | client->duid_len = sizeof(client->duid.type) + duid_len; |
d7df2fd3 | 216 | } else |
27eba50e | 217 | switch (duid_type) { |
335f80a6 | 218 | case DUID_TYPE_LLT: |
339697f0 | 219 | if (client->mac_addr_len == 0) |
335f80a6 YW |
220 | return -EOPNOTSUPP; |
221 | ||
53253d9c | 222 | r = dhcp_identifier_set_duid_llt(&client->duid, llt_time, client->mac_addr, client->mac_addr_len, client->arp_type, &client->duid_len); |
335f80a6 YW |
223 | if (r < 0) |
224 | return r; | |
225 | break; | |
27eba50e YW |
226 | case DUID_TYPE_EN: |
227 | r = dhcp_identifier_set_duid_en(&client->duid, &client->duid_len); | |
228 | if (r < 0) | |
229 | return r; | |
230 | break; | |
335f80a6 | 231 | case DUID_TYPE_LL: |
339697f0 | 232 | if (client->mac_addr_len == 0) |
335f80a6 YW |
233 | return -EOPNOTSUPP; |
234 | ||
235 | r = dhcp_identifier_set_duid_ll(&client->duid, client->mac_addr, client->mac_addr_len, client->arp_type, &client->duid_len); | |
236 | if (r < 0) | |
237 | return r; | |
238 | break; | |
27eba50e YW |
239 | case DUID_TYPE_UUID: |
240 | r = dhcp_identifier_set_duid_uuid(&client->duid, &client->duid_len); | |
241 | if (r < 0) | |
242 | return r; | |
243 | break; | |
244 | default: | |
335f80a6 | 245 | return -EINVAL; |
27eba50e | 246 | } |
fe4b2156 | 247 | |
413708d1 VK |
248 | return 0; |
249 | } | |
250 | ||
7e90a499 YW |
251 | int sd_dhcp6_client_set_duid( |
252 | sd_dhcp6_client *client, | |
253 | uint16_t duid_type, | |
254 | const void *duid, | |
255 | size_t duid_len) { | |
256 | return dhcp6_client_set_duid_internal(client, duid_type, duid, duid_len, 0); | |
257 | } | |
258 | ||
259 | int sd_dhcp6_client_set_duid_llt( | |
260 | sd_dhcp6_client *client, | |
261 | usec_t llt_time) { | |
262 | return dhcp6_client_set_duid_internal(client, DUID_TYPE_LLT, NULL, 0, llt_time); | |
263 | } | |
264 | ||
413708d1 VK |
265 | int sd_dhcp6_client_set_iaid(sd_dhcp6_client *client, uint32_t iaid) { |
266 | assert_return(client, -EINVAL); | |
267 | assert_return(IN_SET(client->state, DHCP6_STATE_STOPPED), -EBUSY); | |
268 | ||
e0026dcb | 269 | client->ia_na.ia_na.id = htobe32(iaid); |
dce6563f | 270 | client->ia_pd.ia_pd.id = htobe32(iaid); |
0e408b82 | 271 | client->has_iaid = true; |
66eac120 DW |
272 | |
273 | return 0; | |
274 | } | |
275 | ||
8006aa32 SA |
276 | int sd_dhcp6_client_set_fqdn( |
277 | sd_dhcp6_client *client, | |
278 | const char *fqdn) { | |
279 | ||
280 | assert_return(client, -EINVAL); | |
281 | ||
282 | /* Make sure FQDN qualifies as DNS and as Linux hostname */ | |
283 | if (fqdn && | |
284 | !(hostname_is_valid(fqdn, false) && dns_name_is_valid(fqdn) > 0)) | |
285 | return -EINVAL; | |
286 | ||
287 | return free_and_strdup(&client->fqdn, fqdn); | |
288 | } | |
289 | ||
04c01369 | 290 | int sd_dhcp6_client_set_information_request(sd_dhcp6_client *client, int enabled) { |
bbfa43ca | 291 | assert_return(client, -EINVAL); |
d7c9c21f PF |
292 | assert_return(IN_SET(client->state, DHCP6_STATE_STOPPED), -EBUSY); |
293 | ||
bbfa43ca PF |
294 | client->information_request = enabled; |
295 | ||
296 | return 0; | |
297 | } | |
298 | ||
04c01369 | 299 | int sd_dhcp6_client_get_information_request(sd_dhcp6_client *client, int *enabled) { |
bbfa43ca PF |
300 | assert_return(client, -EINVAL); |
301 | assert_return(enabled, -EINVAL); | |
302 | ||
303 | *enabled = client->information_request; | |
304 | ||
305 | return 0; | |
306 | } | |
307 | ||
0ae0e5cd | 308 | int sd_dhcp6_client_set_request_option(sd_dhcp6_client *client, uint16_t option) { |
da6fe470 PF |
309 | size_t t; |
310 | ||
311 | assert_return(client, -EINVAL); | |
312 | assert_return(client->state == DHCP6_STATE_STOPPED, -EBUSY); | |
313 | ||
314 | switch(option) { | |
a1140666 | 315 | |
2c1ab8ca BG |
316 | case SD_DHCP6_OPTION_DNS_SERVERS: |
317 | case SD_DHCP6_OPTION_DOMAIN_LIST: | |
318 | case SD_DHCP6_OPTION_SNTP_SERVERS: | |
319 | case SD_DHCP6_OPTION_NTP_SERVER: | |
fb5c8216 | 320 | case SD_DHCP6_OPTION_RAPID_COMMIT: |
da6fe470 PF |
321 | break; |
322 | ||
323 | default: | |
324 | return -EINVAL; | |
325 | } | |
326 | ||
327 | for (t = 0; t < client->req_opts_len; t++) | |
328 | if (client->req_opts[t] == htobe16(option)) | |
329 | return -EEXIST; | |
330 | ||
331 | if (!GREEDY_REALLOC(client->req_opts, client->req_opts_allocated, | |
332 | client->req_opts_len + 1)) | |
333 | return -ENOMEM; | |
334 | ||
335 | client->req_opts[client->req_opts_len++] = htobe16(option); | |
336 | ||
337 | return 0; | |
338 | } | |
339 | ||
d8c51121 PF |
340 | int sd_dhcp6_client_get_prefix_delegation(sd_dhcp6_client *client, int *delegation) { |
341 | assert_return(client, -EINVAL); | |
342 | assert_return(delegation, -EINVAL); | |
343 | ||
f311a62b | 344 | *delegation = FLAGS_SET(client->request, DHCP6_REQUEST_IA_PD); |
d8c51121 PF |
345 | |
346 | return 0; | |
347 | } | |
348 | ||
349 | int sd_dhcp6_client_set_prefix_delegation(sd_dhcp6_client *client, int delegation) { | |
7c3de8f8 PF |
350 | assert_return(client, -EINVAL); |
351 | ||
f311a62b PF |
352 | SET_FLAG(client->request, DHCP6_REQUEST_IA_PD, delegation); |
353 | ||
354 | return 0; | |
355 | } | |
356 | ||
357 | int sd_dhcp6_client_get_address_request(sd_dhcp6_client *client, int *request) { | |
358 | assert_return(client, -EINVAL); | |
359 | assert_return(request, -EINVAL); | |
360 | ||
361 | *request = FLAGS_SET(client->request, DHCP6_REQUEST_IA_NA); | |
362 | ||
363 | return 0; | |
364 | } | |
365 | ||
366 | int sd_dhcp6_client_set_address_request(sd_dhcp6_client *client, int request) { | |
367 | assert_return(client, -EINVAL); | |
368 | ||
369 | SET_FLAG(client->request, DHCP6_REQUEST_IA_NA, request); | |
7c3de8f8 PF |
370 | |
371 | return 0; | |
372 | } | |
373 | ||
b62f9008 | 374 | int sd_dhcp6_client_set_transaction_id(sd_dhcp6_client *client, uint32_t transaction_id) { |
d89a400e EV |
375 | assert_return(client, -EINVAL); |
376 | ||
377 | client->transaction_id = transaction_id; | |
378 | ||
379 | return 0; | |
380 | } | |
381 | ||
ea3b3a75 PF |
382 | int sd_dhcp6_client_get_lease(sd_dhcp6_client *client, sd_dhcp6_lease **ret) { |
383 | assert_return(client, -EINVAL); | |
ea3b3a75 PF |
384 | |
385 | if (!client->lease) | |
386 | return -ENOMSG; | |
387 | ||
3098562c TG |
388 | if (ret) |
389 | *ret = client->lease; | |
ea3b3a75 PF |
390 | |
391 | return 0; | |
392 | } | |
393 | ||
3f0c075f | 394 | static void client_notify(sd_dhcp6_client *client, int event) { |
45aa74c7 LP |
395 | assert(client); |
396 | ||
397 | if (client->callback) | |
398 | client->callback(client, event, client->userdata); | |
139b011a PF |
399 | } |
400 | ||
f8908727 | 401 | static int client_reset(sd_dhcp6_client *client) { |
a1140666 | 402 | assert(client); |
f8908727 | 403 | |
431a4bc8 | 404 | client->lease = sd_dhcp6_lease_unref(client->lease); |
4e3e6679 | 405 | |
a9aff361 PF |
406 | client->receive_message = |
407 | sd_event_source_unref(client->receive_message); | |
408 | ||
c3e2adea | 409 | client->transaction_id = 0; |
346e13a2 | 410 | client->transaction_start = 0; |
a9aff361 | 411 | |
d1b0afe3 PF |
412 | client->retransmit_time = 0; |
413 | client->retransmit_count = 0; | |
d1b0afe3 | 414 | |
c9393e8c YW |
415 | (void) event_source_disable(client->timeout_resend); |
416 | (void) event_source_disable(client->timeout_resend_expire); | |
417 | (void) event_source_disable(client->timeout_t1); | |
418 | (void) event_source_disable(client->timeout_t2); | |
213e759a | 419 | |
139b011a PF |
420 | client->state = DHCP6_STATE_STOPPED; |
421 | ||
422 | return 0; | |
423 | } | |
424 | ||
3f0c075f PF |
425 | static void client_stop(sd_dhcp6_client *client, int error) { |
426 | DHCP6_CLIENT_DONT_DESTROY(client); | |
139b011a | 427 | |
3f0c075f | 428 | assert(client); |
139b011a | 429 | |
3f0c075f PF |
430 | client_notify(client, error); |
431 | ||
432 | client_reset(client); | |
139b011a PF |
433 | } |
434 | ||
346e13a2 | 435 | static int client_send_message(sd_dhcp6_client *client, usec_t time_now) { |
a9aff361 PF |
436 | _cleanup_free_ DHCP6Message *message = NULL; |
437 | struct in6_addr all_servers = | |
438 | IN6ADDR_ALL_DHCP6_RELAY_AGENTS_AND_SERVERS_INIT; | |
439 | size_t len, optlen = 512; | |
440 | uint8_t *opt; | |
441 | int r; | |
346e13a2 PF |
442 | usec_t elapsed_usec; |
443 | be16_t elapsed_time; | |
a9aff361 | 444 | |
a1140666 LP |
445 | assert(client); |
446 | ||
a9aff361 PF |
447 | len = sizeof(DHCP6Message) + optlen; |
448 | ||
449 | message = malloc0(len); | |
450 | if (!message) | |
451 | return -ENOMEM; | |
452 | ||
453 | opt = (uint8_t *)(message + 1); | |
454 | ||
455 | message->transaction_id = client->transaction_id; | |
456 | ||
457 | switch(client->state) { | |
bbfa43ca PF |
458 | case DHCP6_STATE_INFORMATION_REQUEST: |
459 | message->type = DHCP6_INFORMATION_REQUEST; | |
460 | ||
461 | break; | |
462 | ||
a9aff361 PF |
463 | case DHCP6_STATE_SOLICITATION: |
464 | message->type = DHCP6_SOLICIT; | |
465 | ||
ed6ee219 | 466 | r = dhcp6_option_append(&opt, &optlen, |
2c1ab8ca | 467 | SD_DHCP6_OPTION_RAPID_COMMIT, 0, NULL); |
926695f1 TA |
468 | if (r < 0) |
469 | return r; | |
ed6ee219 | 470 | |
f311a62b PF |
471 | if (FLAGS_SET(client->request, DHCP6_REQUEST_IA_NA)) { |
472 | r = dhcp6_option_append_ia(&opt, &optlen, | |
473 | &client->ia_na); | |
474 | if (r < 0) | |
475 | return r; | |
476 | } | |
a9aff361 | 477 | |
8006aa32 SA |
478 | if (client->fqdn) { |
479 | r = dhcp6_option_append_fqdn(&opt, &optlen, client->fqdn); | |
480 | if (r < 0) | |
481 | return r; | |
482 | } | |
483 | ||
f311a62b | 484 | if (FLAGS_SET(client->request, DHCP6_REQUEST_IA_PD)) { |
7c3de8f8 PF |
485 | r = dhcp6_option_append_pd(opt, optlen, &client->ia_pd); |
486 | if (r < 0) | |
487 | return r; | |
488 | ||
489 | opt += r; | |
490 | optlen -= r; | |
491 | } | |
492 | ||
7246333c PF |
493 | break; |
494 | ||
495 | case DHCP6_STATE_REQUEST: | |
3dc34fcc PF |
496 | case DHCP6_STATE_RENEW: |
497 | ||
498 | if (client->state == DHCP6_STATE_REQUEST) | |
499 | message->type = DHCP6_REQUEST; | |
500 | else | |
501 | message->type = DHCP6_RENEW; | |
7246333c | 502 | |
2c1ab8ca | 503 | r = dhcp6_option_append(&opt, &optlen, SD_DHCP6_OPTION_SERVERID, |
7246333c PF |
504 | client->lease->serverid_len, |
505 | client->lease->serverid); | |
506 | if (r < 0) | |
507 | return r; | |
508 | ||
f311a62b PF |
509 | if (FLAGS_SET(client->request, DHCP6_REQUEST_IA_NA)) { |
510 | r = dhcp6_option_append_ia(&opt, &optlen, | |
511 | &client->lease->ia); | |
512 | if (r < 0) | |
513 | return r; | |
514 | } | |
a9aff361 | 515 | |
8006aa32 SA |
516 | if (client->fqdn) { |
517 | r = dhcp6_option_append_fqdn(&opt, &optlen, client->fqdn); | |
518 | if (r < 0) | |
519 | return r; | |
520 | } | |
521 | ||
f311a62b | 522 | if (FLAGS_SET(client->request, DHCP6_REQUEST_IA_PD)) { |
7c3de8f8 PF |
523 | r = dhcp6_option_append_pd(opt, optlen, &client->lease->pd); |
524 | if (r < 0) | |
525 | return r; | |
526 | ||
527 | opt += r; | |
528 | optlen -= r; | |
529 | } | |
530 | ||
a9aff361 PF |
531 | break; |
532 | ||
3dc34fcc PF |
533 | case DHCP6_STATE_REBIND: |
534 | message->type = DHCP6_REBIND; | |
535 | ||
f311a62b PF |
536 | if (FLAGS_SET(client->request, DHCP6_REQUEST_IA_NA)) { |
537 | r = dhcp6_option_append_ia(&opt, &optlen, &client->lease->ia); | |
538 | if (r < 0) | |
539 | return r; | |
540 | } | |
3dc34fcc | 541 | |
8006aa32 SA |
542 | if (client->fqdn) { |
543 | r = dhcp6_option_append_fqdn(&opt, &optlen, client->fqdn); | |
544 | if (r < 0) | |
545 | return r; | |
546 | } | |
547 | ||
f311a62b | 548 | if (FLAGS_SET(client->request, DHCP6_REQUEST_IA_PD)) { |
7c3de8f8 PF |
549 | r = dhcp6_option_append_pd(opt, optlen, &client->lease->pd); |
550 | if (r < 0) | |
551 | return r; | |
552 | ||
553 | opt += r; | |
554 | optlen -= r; | |
555 | } | |
556 | ||
3dc34fcc PF |
557 | break; |
558 | ||
a9aff361 | 559 | case DHCP6_STATE_STOPPED: |
a34b57c0 | 560 | case DHCP6_STATE_BOUND: |
a9aff361 PF |
561 | return -EINVAL; |
562 | } | |
563 | ||
2c1ab8ca | 564 | r = dhcp6_option_append(&opt, &optlen, SD_DHCP6_OPTION_ORO, |
da6fe470 PF |
565 | client->req_opts_len * sizeof(be16_t), |
566 | client->req_opts); | |
567 | if (r < 0) | |
568 | return r; | |
569 | ||
ccd1fc2f | 570 | assert(client->duid_len); |
2c1ab8ca | 571 | r = dhcp6_option_append(&opt, &optlen, SD_DHCP6_OPTION_CLIENTID, |
66eac120 | 572 | client->duid_len, &client->duid); |
7246333c PF |
573 | if (r < 0) |
574 | return r; | |
575 | ||
346e13a2 PF |
576 | elapsed_usec = time_now - client->transaction_start; |
577 | if (elapsed_usec < 0xffff * USEC_PER_MSEC * 10) | |
578 | elapsed_time = htobe16(elapsed_usec / USEC_PER_MSEC / 10); | |
579 | else | |
580 | elapsed_time = 0xffff; | |
581 | ||
2c1ab8ca | 582 | r = dhcp6_option_append(&opt, &optlen, SD_DHCP6_OPTION_ELAPSED_TIME, |
346e13a2 PF |
583 | sizeof(elapsed_time), &elapsed_time); |
584 | if (r < 0) | |
585 | return r; | |
586 | ||
a9aff361 PF |
587 | r = dhcp6_network_send_udp_socket(client->fd, &all_servers, message, |
588 | len - optlen); | |
589 | if (r < 0) | |
590 | return r; | |
591 | ||
592 | log_dhcp6_client(client, "Sent %s", | |
593 | dhcp6_message_type_to_string(message->type)); | |
594 | ||
595 | return 0; | |
596 | } | |
597 | ||
4b558378 | 598 | static int client_timeout_t2(sd_event_source *s, uint64_t usec, void *userdata) { |
a34b57c0 PF |
599 | sd_dhcp6_client *client = userdata; |
600 | ||
a1140666 LP |
601 | assert(s); |
602 | assert(client); | |
603 | assert(client->lease); | |
a34b57c0 | 604 | |
c9393e8c | 605 | (void) event_source_disable(client->timeout_t2); |
a34b57c0 PF |
606 | |
607 | log_dhcp6_client(client, "Timeout T2"); | |
608 | ||
3dc34fcc PF |
609 | client_start(client, DHCP6_STATE_REBIND); |
610 | ||
a34b57c0 PF |
611 | return 0; |
612 | } | |
613 | ||
4b558378 | 614 | static int client_timeout_t1(sd_event_source *s, uint64_t usec, void *userdata) { |
a34b57c0 PF |
615 | sd_dhcp6_client *client = userdata; |
616 | ||
a1140666 LP |
617 | assert(s); |
618 | assert(client); | |
619 | assert(client->lease); | |
a34b57c0 | 620 | |
c9393e8c | 621 | (void) event_source_disable(client->timeout_t1); |
a34b57c0 PF |
622 | |
623 | log_dhcp6_client(client, "Timeout T1"); | |
624 | ||
3dc34fcc PF |
625 | client_start(client, DHCP6_STATE_RENEW); |
626 | ||
a34b57c0 PF |
627 | return 0; |
628 | } | |
629 | ||
4b558378 | 630 | static int client_timeout_resend_expire(sd_event_source *s, uint64_t usec, void *userdata) { |
d1b0afe3 | 631 | sd_dhcp6_client *client = userdata; |
3dc34fcc PF |
632 | DHCP6_CLIENT_DONT_DESTROY(client); |
633 | enum DHCP6State state; | |
d1b0afe3 PF |
634 | |
635 | assert(s); | |
636 | assert(client); | |
637 | assert(client->event); | |
638 | ||
3dc34fcc PF |
639 | state = client->state; |
640 | ||
10c9ce61 | 641 | client_stop(client, SD_DHCP6_CLIENT_EVENT_RESEND_EXPIRE); |
d1b0afe3 | 642 | |
3dc34fcc PF |
643 | /* RFC 3315, section 18.1.4., says that "...the client may choose to |
644 | use a Solicit message to locate a new DHCP server..." */ | |
645 | if (state == DHCP6_STATE_REBIND) | |
646 | client_start(client, DHCP6_STATE_SOLICITATION); | |
647 | ||
d1b0afe3 PF |
648 | return 0; |
649 | } | |
650 | ||
651 | static usec_t client_timeout_compute_random(usec_t val) { | |
652 | return val - val / 10 + | |
653 | (random_u32() % (2 * USEC_PER_SEC)) * val / 10 / USEC_PER_SEC; | |
654 | } | |
655 | ||
4b558378 | 656 | static int client_timeout_resend(sd_event_source *s, uint64_t usec, void *userdata) { |
d1b0afe3 PF |
657 | int r = 0; |
658 | sd_dhcp6_client *client = userdata; | |
4b4923e6 | 659 | usec_t time_now, init_retransmit_time = 0, max_retransmit_time = 0; |
5e913450 | 660 | usec_t max_retransmit_duration = 0; |
513a6fa8 | 661 | uint8_t max_retransmit_count = 0; |
d1b0afe3 | 662 | char time_string[FORMAT_TIMESPAN_MAX]; |
3dc34fcc | 663 | uint32_t expire = 0; |
d1b0afe3 PF |
664 | |
665 | assert(s); | |
666 | assert(client); | |
667 | assert(client->event); | |
668 | ||
c9393e8c | 669 | (void) event_source_disable(client->timeout_resend); |
d1b0afe3 PF |
670 | |
671 | switch (client->state) { | |
bbfa43ca PF |
672 | case DHCP6_STATE_INFORMATION_REQUEST: |
673 | init_retransmit_time = DHCP6_INF_TIMEOUT; | |
674 | max_retransmit_time = DHCP6_INF_MAX_RT; | |
675 | ||
676 | break; | |
677 | ||
d1b0afe3 | 678 | case DHCP6_STATE_SOLICITATION: |
7246333c PF |
679 | |
680 | if (client->retransmit_count && client->lease) { | |
681 | client_start(client, DHCP6_STATE_REQUEST); | |
682 | return 0; | |
683 | } | |
684 | ||
d1b0afe3 PF |
685 | init_retransmit_time = DHCP6_SOL_TIMEOUT; |
686 | max_retransmit_time = DHCP6_SOL_MAX_RT; | |
d1b0afe3 PF |
687 | |
688 | break; | |
689 | ||
7246333c PF |
690 | case DHCP6_STATE_REQUEST: |
691 | init_retransmit_time = DHCP6_REQ_TIMEOUT; | |
692 | max_retransmit_time = DHCP6_REQ_MAX_RT; | |
693 | max_retransmit_count = DHCP6_REQ_MAX_RC; | |
7246333c PF |
694 | |
695 | break; | |
696 | ||
3dc34fcc PF |
697 | case DHCP6_STATE_RENEW: |
698 | init_retransmit_time = DHCP6_REN_TIMEOUT; | |
699 | max_retransmit_time = DHCP6_REN_MAX_RT; | |
3dc34fcc PF |
700 | |
701 | /* RFC 3315, section 18.1.3. says max retransmit duration will | |
702 | be the remaining time until T2. Instead of setting MRD, | |
703 | wait for T2 to trigger with the same end result */ | |
3dc34fcc PF |
704 | |
705 | break; | |
706 | ||
707 | case DHCP6_STATE_REBIND: | |
708 | init_retransmit_time = DHCP6_REB_TIMEOUT; | |
709 | max_retransmit_time = DHCP6_REB_MAX_RT; | |
3dc34fcc | 710 | |
c9393e8c | 711 | if (event_source_is_enabled(client->timeout_resend_expire) <= 0) { |
3dc34fcc PF |
712 | r = dhcp6_lease_ia_rebind_expire(&client->lease->ia, |
713 | &expire); | |
714 | if (r < 0) { | |
715 | client_stop(client, r); | |
716 | return 0; | |
717 | } | |
718 | max_retransmit_duration = expire * USEC_PER_SEC; | |
719 | } | |
720 | ||
721 | break; | |
722 | ||
d1b0afe3 | 723 | case DHCP6_STATE_STOPPED: |
a34b57c0 | 724 | case DHCP6_STATE_BOUND: |
d1b0afe3 PF |
725 | return 0; |
726 | } | |
727 | ||
728 | if (max_retransmit_count && | |
729 | client->retransmit_count >= max_retransmit_count) { | |
10c9ce61 | 730 | client_stop(client, SD_DHCP6_CLIENT_EVENT_RETRANS_MAX); |
d1b0afe3 PF |
731 | return 0; |
732 | } | |
733 | ||
fa94c34b | 734 | r = sd_event_now(client->event, clock_boottime_or_monotonic(), &time_now); |
d1b0afe3 PF |
735 | if (r < 0) |
736 | goto error; | |
737 | ||
346e13a2 PF |
738 | r = client_send_message(client, time_now); |
739 | if (r >= 0) | |
740 | client->retransmit_count++; | |
741 | ||
d1b0afe3 PF |
742 | if (!client->retransmit_time) { |
743 | client->retransmit_time = | |
744 | client_timeout_compute_random(init_retransmit_time); | |
a9aff361 PF |
745 | |
746 | if (client->state == DHCP6_STATE_SOLICITATION) | |
747 | client->retransmit_time += init_retransmit_time / 10; | |
748 | ||
d1b0afe3 PF |
749 | } else { |
750 | if (max_retransmit_time && | |
751 | client->retransmit_time > max_retransmit_time / 2) | |
752 | client->retransmit_time = client_timeout_compute_random(max_retransmit_time); | |
753 | else | |
754 | client->retransmit_time += client_timeout_compute_random(client->retransmit_time); | |
755 | } | |
756 | ||
757 | log_dhcp6_client(client, "Next retransmission in %s", | |
ed19c567 | 758 | format_timespan(time_string, FORMAT_TIMESPAN_MAX, client->retransmit_time, USEC_PER_SEC)); |
d1b0afe3 | 759 | |
c9393e8c YW |
760 | r = event_reset_time(client->event, &client->timeout_resend, |
761 | clock_boottime_or_monotonic(), | |
762 | time_now + client->retransmit_time, 10 * USEC_PER_MSEC, | |
763 | client_timeout_resend, client, | |
764 | client->event_priority, "dhcp6-resend-timer", true); | |
d1b0afe3 PF |
765 | if (r < 0) |
766 | goto error; | |
767 | ||
c9393e8c | 768 | if (max_retransmit_duration && event_source_is_enabled(client->timeout_resend_expire) <= 0) { |
d1b0afe3 PF |
769 | |
770 | log_dhcp6_client(client, "Max retransmission duration %"PRIu64" secs", | |
771 | max_retransmit_duration / USEC_PER_SEC); | |
772 | ||
c9393e8c YW |
773 | r = event_reset_time(client->event, &client->timeout_resend_expire, |
774 | clock_boottime_or_monotonic(), | |
775 | time_now + max_retransmit_duration, USEC_PER_SEC, | |
776 | client_timeout_resend_expire, client, | |
777 | client->event_priority, "dhcp6-resend-expire-timer", true); | |
9021bb9f TG |
778 | if (r < 0) |
779 | goto error; | |
d1b0afe3 PF |
780 | } |
781 | ||
782 | error: | |
783 | if (r < 0) | |
784 | client_stop(client, r); | |
785 | ||
786 | return 0; | |
787 | } | |
788 | ||
f12abb48 | 789 | static int client_ensure_iaid(sd_dhcp6_client *client) { |
cfb5b380 | 790 | int r; |
6d13616b | 791 | uint32_t iaid; |
f12abb48 PF |
792 | |
793 | assert(client); | |
794 | ||
0e408b82 | 795 | if (client->has_iaid) |
f12abb48 PF |
796 | return 0; |
797 | ||
6d13616b | 798 | r = dhcp_identifier_set_iaid(client->ifindex, client->mac_addr, client->mac_addr_len, true, &iaid); |
cfb5b380 TG |
799 | if (r < 0) |
800 | return r; | |
f12abb48 | 801 | |
69b43997 PF |
802 | client->ia_na.ia_na.id = iaid; |
803 | client->ia_pd.ia_pd.id = iaid; | |
0e408b82 | 804 | client->has_iaid = true; |
69b43997 | 805 | |
f12abb48 PF |
806 | return 0; |
807 | } | |
808 | ||
4b558378 ZJS |
809 | static int client_parse_message( |
810 | sd_dhcp6_client *client, | |
811 | DHCP6Message *message, | |
812 | size_t len, | |
813 | sd_dhcp6_lease *lease) { | |
da07cf35 YW |
814 | |
815 | uint32_t lt_t1 = ~0, lt_t2 = ~0; | |
816 | bool clientid = false; | |
3bc424a3 | 817 | size_t pos = 0; |
631bbe71 | 818 | int r; |
631bbe71 | 819 | |
a1140666 LP |
820 | assert(client); |
821 | assert(message); | |
822 | assert(len >= sizeof(DHCP6Message)); | |
823 | assert(lease); | |
824 | ||
44481a8b ZJS |
825 | len -= sizeof(DHCP6Message); |
826 | ||
3bc424a3 | 827 | while (pos < len) { |
da07cf35 | 828 | DHCP6Option *option = (DHCP6Option *) &message->options[pos]; |
c6b4f32a | 829 | uint16_t optcode, optlen; |
3bc424a3 | 830 | be32_t iaid_lease; |
da07cf35 YW |
831 | uint8_t *optval; |
832 | int status; | |
3bc424a3 | 833 | |
da07cf35 | 834 | if (len < pos + offsetof(DHCP6Option, data)) |
3bc424a3 PF |
835 | return -ENOBUFS; |
836 | ||
837 | optcode = be16toh(option->code); | |
838 | optlen = be16toh(option->len); | |
839 | optval = option->data; | |
840 | ||
da07cf35 YW |
841 | if (len < pos + offsetof(DHCP6Option, data) + optlen) |
842 | return -ENOBUFS; | |
843 | ||
631bbe71 | 844 | switch (optcode) { |
2c1ab8ca | 845 | case SD_DHCP6_OPTION_CLIENTID: |
631bbe71 PF |
846 | if (clientid) { |
847 | log_dhcp6_client(client, "%s contains multiple clientids", | |
848 | dhcp6_message_type_to_string(message->type)); | |
849 | return -EINVAL; | |
850 | } | |
851 | ||
66eac120 | 852 | if (optlen != client->duid_len || |
631bbe71 PF |
853 | memcmp(&client->duid, optval, optlen) != 0) { |
854 | log_dhcp6_client(client, "%s DUID does not match", | |
855 | dhcp6_message_type_to_string(message->type)); | |
856 | ||
857 | return -EINVAL; | |
858 | } | |
859 | clientid = true; | |
860 | ||
861 | break; | |
862 | ||
2c1ab8ca | 863 | case SD_DHCP6_OPTION_SERVERID: |
99f1d3fc ZJS |
864 | r = dhcp6_lease_get_serverid(lease, NULL, NULL); |
865 | if (r >= 0) { | |
631bbe71 PF |
866 | log_dhcp6_client(client, "%s contains multiple serverids", |
867 | dhcp6_message_type_to_string(message->type)); | |
868 | return -EINVAL; | |
869 | } | |
870 | ||
871 | r = dhcp6_lease_set_serverid(lease, optval, optlen); | |
872 | if (r < 0) | |
873 | return r; | |
874 | ||
875 | break; | |
876 | ||
2c1ab8ca | 877 | case SD_DHCP6_OPTION_PREFERENCE: |
631bbe71 PF |
878 | if (optlen != 1) |
879 | return -EINVAL; | |
880 | ||
3bc424a3 | 881 | r = dhcp6_lease_set_preference(lease, optval[0]); |
631bbe71 PF |
882 | if (r < 0) |
883 | return r; | |
884 | ||
885 | break; | |
886 | ||
2c1ab8ca | 887 | case SD_DHCP6_OPTION_STATUS_CODE: |
91c43f39 YW |
888 | status = dhcp6_option_parse_status(option, optlen + sizeof(DHCP6Option)); |
889 | if (status < 0) | |
890 | return status; | |
891 | ||
892 | if (status > 0) { | |
631bbe71 PF |
893 | log_dhcp6_client(client, "%s Status %s", |
894 | dhcp6_message_type_to_string(message->type), | |
895 | dhcp6_message_status_to_string(status)); | |
c6b4f32a | 896 | |
631bbe71 PF |
897 | return -EINVAL; |
898 | } | |
899 | ||
900 | break; | |
901 | ||
2c1ab8ca | 902 | case SD_DHCP6_OPTION_IA_NA: |
bbfa43ca PF |
903 | if (client->state == DHCP6_STATE_INFORMATION_REQUEST) { |
904 | log_dhcp6_client(client, "Information request ignoring IA NA option"); | |
905 | ||
906 | break; | |
907 | } | |
908 | ||
3bc424a3 | 909 | r = dhcp6_option_parse_ia(option, &lease->ia); |
631bbe71 PF |
910 | if (r < 0 && r != -ENOMSG) |
911 | return r; | |
912 | ||
913 | r = dhcp6_lease_get_iaid(lease, &iaid_lease); | |
914 | if (r < 0) | |
915 | return r; | |
916 | ||
e0026dcb | 917 | if (client->ia_na.ia_na.id != iaid_lease) { |
dce6563f PF |
918 | log_dhcp6_client(client, "%s has wrong IAID for IA NA", |
919 | dhcp6_message_type_to_string(message->type)); | |
920 | return -EINVAL; | |
921 | } | |
922 | ||
b47fb949 PF |
923 | if (lease->ia.addresses) { |
924 | lt_t1 = MIN(lt_t1, be32toh(lease->ia.ia_na.lifetime_t1)); | |
925 | lt_t2 = MIN(lt_t2, be32toh(lease->ia.ia_na.lifetime_t1)); | |
926 | } | |
927 | ||
dce6563f PF |
928 | break; |
929 | ||
930 | case SD_DHCP6_OPTION_IA_PD: | |
931 | if (client->state == DHCP6_STATE_INFORMATION_REQUEST) { | |
932 | log_dhcp6_client(client, "Information request ignoring IA PD option"); | |
933 | ||
934 | break; | |
935 | } | |
936 | ||
937 | r = dhcp6_option_parse_ia(option, &lease->pd); | |
938 | if (r < 0 && r != -ENOMSG) | |
939 | return r; | |
940 | ||
49228c75 | 941 | r = dhcp6_lease_get_pd_iaid(lease, &iaid_lease); |
dce6563f PF |
942 | if (r < 0) |
943 | return r; | |
944 | ||
945 | if (client->ia_pd.ia_pd.id != iaid_lease) { | |
946 | log_dhcp6_client(client, "%s has wrong IAID for IA PD", | |
631bbe71 PF |
947 | dhcp6_message_type_to_string(message->type)); |
948 | return -EINVAL; | |
949 | } | |
950 | ||
b47fb949 PF |
951 | if (lease->pd.addresses) { |
952 | lt_t1 = MIN(lt_t1, be32toh(lease->pd.ia_pd.lifetime_t1)); | |
953 | lt_t2 = MIN(lt_t2, be32toh(lease->pd.ia_pd.lifetime_t2)); | |
954 | } | |
955 | ||
631bbe71 | 956 | break; |
ed6ee219 | 957 | |
2c1ab8ca | 958 | case SD_DHCP6_OPTION_RAPID_COMMIT: |
ed6ee219 PF |
959 | r = dhcp6_lease_set_rapid_commit(lease); |
960 | if (r < 0) | |
961 | return r; | |
962 | ||
963 | break; | |
7bd8e95d | 964 | |
2c1ab8ca | 965 | case SD_DHCP6_OPTION_DNS_SERVERS: |
7bd8e95d PF |
966 | r = dhcp6_lease_set_dns(lease, optval, optlen); |
967 | if (r < 0) | |
968 | return r; | |
969 | ||
970 | break; | |
5da1b97f | 971 | |
2c1ab8ca | 972 | case SD_DHCP6_OPTION_DOMAIN_LIST: |
5da1b97f PF |
973 | r = dhcp6_lease_set_domains(lease, optval, optlen); |
974 | if (r < 0) | |
975 | return r; | |
976 | ||
977 | break; | |
978 | ||
2c1ab8ca | 979 | case SD_DHCP6_OPTION_NTP_SERVER: |
6599680e PF |
980 | r = dhcp6_lease_set_ntp(lease, optval, optlen); |
981 | if (r < 0) | |
982 | return r; | |
983 | ||
984 | break; | |
41e4615d | 985 | |
2c1ab8ca | 986 | case SD_DHCP6_OPTION_SNTP_SERVERS: |
41e4615d PF |
987 | r = dhcp6_lease_set_sntp(lease, optval, optlen); |
988 | if (r < 0) | |
989 | return r; | |
990 | ||
991 | break; | |
631bbe71 | 992 | } |
6599680e | 993 | |
23976cb9 | 994 | pos += offsetof(DHCP6Option, data) + optlen; |
631bbe71 PF |
995 | } |
996 | ||
1eeddba4 | 997 | if (!clientid) { |
631bbe71 PF |
998 | log_dhcp6_client(client, "%s has incomplete options", |
999 | dhcp6_message_type_to_string(message->type)); | |
1000 | return -EINVAL; | |
1001 | } | |
1002 | ||
bbfa43ca | 1003 | if (client->state != DHCP6_STATE_INFORMATION_REQUEST) { |
99f1d3fc ZJS |
1004 | r = dhcp6_lease_get_serverid(lease, NULL, NULL); |
1005 | if (r < 0) { | |
bbfa43ca PF |
1006 | log_dhcp6_client(client, "%s has no server id", |
1007 | dhcp6_message_type_to_string(message->type)); | |
99f1d3fc ZJS |
1008 | return -EINVAL; |
1009 | } | |
b47fb949 | 1010 | |
99f1d3fc ZJS |
1011 | } else { |
1012 | if (lease->ia.addresses) { | |
1013 | lease->ia.ia_na.lifetime_t1 = htobe32(lt_t1); | |
1014 | lease->ia.ia_na.lifetime_t2 = htobe32(lt_t2); | |
1015 | } | |
b47fb949 | 1016 | |
99f1d3fc ZJS |
1017 | if (lease->pd.addresses) { |
1018 | lease->pd.ia_pd.lifetime_t1 = htobe32(lt_t1); | |
1019 | lease->pd.ia_pd.lifetime_t2 = htobe32(lt_t2); | |
1020 | } | |
bbfa43ca | 1021 | } |
631bbe71 | 1022 | |
21a9905c | 1023 | return 0; |
631bbe71 PF |
1024 | } |
1025 | ||
0ae0e5cd | 1026 | static int client_receive_reply(sd_dhcp6_client *client, DHCP6Message *reply, size_t len) { |
4afd3348 | 1027 | _cleanup_(sd_dhcp6_lease_unrefp) sd_dhcp6_lease *lease = NULL; |
ed6ee219 | 1028 | bool rapid_commit; |
a1140666 LP |
1029 | int r; |
1030 | ||
1031 | assert(client); | |
1032 | assert(reply); | |
a34b57c0 PF |
1033 | |
1034 | if (reply->type != DHCP6_REPLY) | |
ed6ee219 | 1035 | return 0; |
a34b57c0 PF |
1036 | |
1037 | r = dhcp6_lease_new(&lease); | |
1038 | if (r < 0) | |
1039 | return -ENOMEM; | |
1040 | ||
1041 | r = client_parse_message(client, reply, len, lease); | |
1042 | if (r < 0) | |
1043 | return r; | |
1044 | ||
ed6ee219 PF |
1045 | if (client->state == DHCP6_STATE_SOLICITATION) { |
1046 | r = dhcp6_lease_get_rapid_commit(lease, &rapid_commit); | |
1047 | if (r < 0) | |
1048 | return r; | |
1049 | ||
1050 | if (!rapid_commit) | |
1051 | return 0; | |
1052 | } | |
1053 | ||
431a4bc8 YW |
1054 | sd_dhcp6_lease_unref(client->lease); |
1055 | client->lease = TAKE_PTR(lease); | |
a34b57c0 PF |
1056 | |
1057 | return DHCP6_STATE_BOUND; | |
1058 | } | |
1059 | ||
0ae0e5cd | 1060 | static int client_receive_advertise(sd_dhcp6_client *client, DHCP6Message *advertise, size_t len) { |
4afd3348 | 1061 | _cleanup_(sd_dhcp6_lease_unrefp) sd_dhcp6_lease *lease = NULL; |
631bbe71 | 1062 | uint8_t pref_advertise = 0, pref_lease = 0; |
a1140666 | 1063 | int r; |
631bbe71 PF |
1064 | |
1065 | if (advertise->type != DHCP6_ADVERTISE) | |
ed6ee219 | 1066 | return 0; |
631bbe71 PF |
1067 | |
1068 | r = dhcp6_lease_new(&lease); | |
1069 | if (r < 0) | |
1070 | return r; | |
1071 | ||
1072 | r = client_parse_message(client, advertise, len, lease); | |
1073 | if (r < 0) | |
1074 | return r; | |
1075 | ||
1076 | r = dhcp6_lease_get_preference(lease, &pref_advertise); | |
1077 | if (r < 0) | |
1078 | return r; | |
1079 | ||
1080 | r = dhcp6_lease_get_preference(client->lease, &pref_lease); | |
bbfa43ca PF |
1081 | |
1082 | if (r < 0 || pref_advertise > pref_lease) { | |
431a4bc8 YW |
1083 | sd_dhcp6_lease_unref(client->lease); |
1084 | client->lease = TAKE_PTR(lease); | |
631bbe71 PF |
1085 | r = 0; |
1086 | } | |
1087 | ||
7246333c PF |
1088 | if (pref_advertise == 255 || client->retransmit_count > 1) |
1089 | r = DHCP6_STATE_REQUEST; | |
1090 | ||
631bbe71 PF |
1091 | return r; |
1092 | } | |
1093 | ||
004845d1 LP |
1094 | static int client_receive_message( |
1095 | sd_event_source *s, | |
1096 | int fd, uint32_t | |
1097 | revents, | |
1098 | void *userdata) { | |
1099 | ||
631bbe71 | 1100 | sd_dhcp6_client *client = userdata; |
3f0c075f | 1101 | DHCP6_CLIENT_DONT_DESTROY(client); |
0d43d2fc | 1102 | _cleanup_free_ DHCP6Message *message = NULL; |
4edc2c9b LP |
1103 | ssize_t buflen, len; |
1104 | int r = 0; | |
631bbe71 PF |
1105 | |
1106 | assert(s); | |
1107 | assert(client); | |
1108 | assert(client->event); | |
1109 | ||
4edc2c9b LP |
1110 | buflen = next_datagram_size_fd(fd); |
1111 | if (buflen < 0) | |
1112 | return buflen; | |
631bbe71 | 1113 | |
0d43d2fc | 1114 | message = malloc(buflen); |
631bbe71 PF |
1115 | if (!message) |
1116 | return -ENOMEM; | |
1117 | ||
cf447cb6 | 1118 | len = recv(fd, message, buflen, 0); |
0d43d2fc | 1119 | if (len < 0) { |
4c701096 | 1120 | if (IN_SET(errno, EAGAIN, EINTR)) |
0d43d2fc TG |
1121 | return 0; |
1122 | ||
bd9a7221 | 1123 | return log_dhcp6_client_errno(client, errno, "Could not receive message from UDP socket: %m"); |
0d43d2fc | 1124 | |
004845d1 LP |
1125 | } |
1126 | if ((size_t) len < sizeof(DHCP6Message)) { | |
1127 | log_dhcp6_client(client, "Too small to be DHCP6 message: ignoring"); | |
631bbe71 | 1128 | return 0; |
004845d1 | 1129 | } |
631bbe71 PF |
1130 | |
1131 | switch(message->type) { | |
1132 | case DHCP6_SOLICIT: | |
1133 | case DHCP6_REQUEST: | |
1134 | case DHCP6_CONFIRM: | |
1135 | case DHCP6_RENEW: | |
1136 | case DHCP6_REBIND: | |
1137 | case DHCP6_RELEASE: | |
1138 | case DHCP6_DECLINE: | |
1139 | case DHCP6_INFORMATION_REQUEST: | |
1140 | case DHCP6_RELAY_FORW: | |
1141 | case DHCP6_RELAY_REPL: | |
1142 | return 0; | |
1143 | ||
1144 | case DHCP6_ADVERTISE: | |
1145 | case DHCP6_REPLY: | |
1146 | case DHCP6_RECONFIGURE: | |
1147 | break; | |
1148 | ||
1149 | default: | |
bd9a7221 | 1150 | log_dhcp6_client(client, "Unknown message type %d", message->type); |
631bbe71 PF |
1151 | return 0; |
1152 | } | |
1153 | ||
1154 | if (client->transaction_id != (message->transaction_id & | |
1155 | htobe32(0x00ffffff))) | |
1156 | return 0; | |
1157 | ||
1158 | switch (client->state) { | |
bbfa43ca PF |
1159 | case DHCP6_STATE_INFORMATION_REQUEST: |
1160 | r = client_receive_reply(client, message, len); | |
1161 | if (r < 0) | |
1162 | return 0; | |
1163 | ||
10c9ce61 | 1164 | client_notify(client, SD_DHCP6_CLIENT_EVENT_INFORMATION_REQUEST); |
bbfa43ca PF |
1165 | |
1166 | client_start(client, DHCP6_STATE_STOPPED); | |
1167 | ||
1168 | break; | |
1169 | ||
631bbe71 PF |
1170 | case DHCP6_STATE_SOLICITATION: |
1171 | r = client_receive_advertise(client, message, len); | |
1172 | ||
ed6ee219 | 1173 | if (r == DHCP6_STATE_REQUEST) { |
7246333c PF |
1174 | client_start(client, r); |
1175 | ||
ed6ee219 PF |
1176 | break; |
1177 | } | |
631bbe71 | 1178 | |
4831981d | 1179 | _fallthrough_; /* for Soliciation Rapid Commit option check */ |
7246333c | 1180 | case DHCP6_STATE_REQUEST: |
3dc34fcc PF |
1181 | case DHCP6_STATE_RENEW: |
1182 | case DHCP6_STATE_REBIND: | |
1183 | ||
a34b57c0 PF |
1184 | r = client_receive_reply(client, message, len); |
1185 | if (r < 0) | |
1186 | return 0; | |
1187 | ||
1188 | if (r == DHCP6_STATE_BOUND) { | |
1189 | ||
1190 | r = client_start(client, DHCP6_STATE_BOUND); | |
1191 | if (r < 0) { | |
1192 | client_stop(client, r); | |
1193 | return 0; | |
1194 | } | |
1195 | ||
10c9ce61 | 1196 | client_notify(client, SD_DHCP6_CLIENT_EVENT_IP_ACQUIRE); |
a34b57c0 PF |
1197 | } |
1198 | ||
1199 | break; | |
1200 | ||
1201 | case DHCP6_STATE_BOUND: | |
1202 | ||
1203 | break; | |
1204 | ||
631bbe71 | 1205 | case DHCP6_STATE_STOPPED: |
631bbe71 PF |
1206 | return 0; |
1207 | } | |
1208 | ||
712fdfd6 YW |
1209 | log_dhcp6_client(client, "Recv %s", |
1210 | dhcp6_message_type_to_string(message->type)); | |
631bbe71 | 1211 | |
a9aff361 PF |
1212 | return 0; |
1213 | } | |
1214 | ||
134ebaa4 PF |
1215 | static int client_get_lifetime(sd_dhcp6_client *client, uint32_t *lifetime_t1, |
1216 | uint32_t *lifetime_t2) { | |
1217 | assert_return(client, -EINVAL); | |
1218 | assert_return(client->lease, -EINVAL); | |
1219 | ||
1220 | if (FLAGS_SET(client->request, DHCP6_REQUEST_IA_NA) && client->lease->ia.addresses) { | |
1221 | *lifetime_t1 = be32toh(client->lease->ia.ia_na.lifetime_t1); | |
1222 | *lifetime_t2 = be32toh(client->lease->ia.ia_na.lifetime_t2); | |
1223 | ||
1224 | return 0; | |
1225 | } | |
1226 | ||
1227 | if (FLAGS_SET(client->request, DHCP6_REQUEST_IA_PD) && client->lease->pd.addresses) { | |
1228 | *lifetime_t1 = be32toh(client->lease->pd.ia_pd.lifetime_t1); | |
1229 | *lifetime_t2 = be32toh(client->lease->pd.ia_pd.lifetime_t2); | |
1230 | ||
1231 | return 0; | |
1232 | } | |
1233 | ||
1234 | return -ENOMSG; | |
1235 | } | |
1236 | ||
0ae0e5cd | 1237 | static int client_start(sd_dhcp6_client *client, enum DHCP6State state) { |
f12abb48 | 1238 | int r; |
a34b57c0 PF |
1239 | usec_t timeout, time_now; |
1240 | char time_string[FORMAT_TIMESPAN_MAX]; | |
134ebaa4 | 1241 | uint32_t lifetime_t1, lifetime_t2; |
f12abb48 PF |
1242 | |
1243 | assert_return(client, -EINVAL); | |
1244 | assert_return(client->event, -EINVAL); | |
2f8e7633 | 1245 | assert_return(client->ifindex > 0, -EINVAL); |
c3e2adea | 1246 | assert_return(client->state != state, -EINVAL); |
f12abb48 | 1247 | |
c9393e8c YW |
1248 | (void) event_source_disable(client->timeout_resend_expire); |
1249 | (void) event_source_disable(client->timeout_resend); | |
c3e2adea PF |
1250 | client->retransmit_time = 0; |
1251 | client->retransmit_count = 0; | |
f12abb48 | 1252 | |
38a03f06 LP |
1253 | r = sd_event_now(client->event, clock_boottime_or_monotonic(), &time_now); |
1254 | if (r < 0) | |
1255 | return r; | |
346e13a2 | 1256 | |
7ac6c26a PF |
1257 | if (!client->receive_message) { |
1258 | r = sd_event_add_io(client->event, &client->receive_message, | |
1259 | client->fd, EPOLLIN, client_receive_message, | |
1260 | client); | |
1261 | if (r < 0) | |
1262 | goto error; | |
1263 | ||
1264 | r = sd_event_source_set_priority(client->receive_message, | |
1265 | client->event_priority); | |
1266 | if (r < 0) | |
1267 | goto error; | |
1268 | ||
1269 | r = sd_event_source_set_description(client->receive_message, | |
1270 | "dhcp6-receive-message"); | |
1271 | if (r < 0) | |
1272 | goto error; | |
1273 | } | |
1274 | ||
c3e2adea PF |
1275 | switch (state) { |
1276 | case DHCP6_STATE_STOPPED: | |
bbfa43ca PF |
1277 | if (client->state == DHCP6_STATE_INFORMATION_REQUEST) { |
1278 | client->state = DHCP6_STATE_STOPPED; | |
a9aff361 | 1279 | |
bbfa43ca PF |
1280 | return 0; |
1281 | } | |
9021bb9f | 1282 | |
4831981d | 1283 | _fallthrough_; |
bbfa43ca | 1284 | case DHCP6_STATE_SOLICITATION: |
c3e2adea PF |
1285 | client->state = DHCP6_STATE_SOLICITATION; |
1286 | ||
7246333c PF |
1287 | break; |
1288 | ||
bbfa43ca | 1289 | case DHCP6_STATE_INFORMATION_REQUEST: |
7246333c | 1290 | case DHCP6_STATE_REQUEST: |
3dc34fcc PF |
1291 | case DHCP6_STATE_RENEW: |
1292 | case DHCP6_STATE_REBIND: | |
a34b57c0 | 1293 | |
7246333c PF |
1294 | client->state = state; |
1295 | ||
c3e2adea | 1296 | break; |
a34b57c0 PF |
1297 | |
1298 | case DHCP6_STATE_BOUND: | |
1299 | ||
134ebaa4 PF |
1300 | r = client_get_lifetime(client, &lifetime_t1, &lifetime_t2); |
1301 | if (r < 0) | |
1302 | goto error; | |
a34b57c0 | 1303 | |
134ebaa4 | 1304 | if (lifetime_t1 == 0xffffffff || lifetime_t2 == 0xffffffff) { |
bd9a7221 | 1305 | log_dhcp6_client(client, "Infinite T1 0x%08x or T2 0x%08x", |
134ebaa4 | 1306 | lifetime_t1, lifetime_t2); |
a34b57c0 PF |
1307 | |
1308 | return 0; | |
1309 | } | |
1310 | ||
134ebaa4 | 1311 | timeout = client_timeout_compute_random(lifetime_t1 * USEC_PER_SEC); |
a34b57c0 PF |
1312 | |
1313 | log_dhcp6_client(client, "T1 expires in %s", | |
ed19c567 | 1314 | format_timespan(time_string, FORMAT_TIMESPAN_MAX, timeout, USEC_PER_SEC)); |
a34b57c0 | 1315 | |
c9393e8c YW |
1316 | r = event_reset_time(client->event, &client->timeout_t1, |
1317 | clock_boottime_or_monotonic(), | |
1318 | time_now + timeout, 10 * USEC_PER_SEC, | |
1319 | client_timeout_t1, client, | |
1320 | client->event_priority, "dhcp6-t1-timeout", true); | |
9021bb9f | 1321 | if (r < 0) |
7ac6c26a | 1322 | goto error; |
9021bb9f | 1323 | |
134ebaa4 | 1324 | timeout = client_timeout_compute_random(lifetime_t2 * USEC_PER_SEC); |
a34b57c0 PF |
1325 | |
1326 | log_dhcp6_client(client, "T2 expires in %s", | |
ed19c567 | 1327 | format_timespan(time_string, FORMAT_TIMESPAN_MAX, timeout, USEC_PER_SEC)); |
a34b57c0 | 1328 | |
c9393e8c YW |
1329 | r = event_reset_time(client->event, &client->timeout_t2, |
1330 | clock_boottime_or_monotonic(), | |
1331 | time_now + timeout, 10 * USEC_PER_SEC, | |
1332 | client_timeout_t2, client, | |
1333 | client->event_priority, "dhcp6-t2-timeout", true); | |
9021bb9f | 1334 | if (r < 0) |
7ac6c26a | 1335 | goto error; |
9021bb9f | 1336 | |
3dc34fcc PF |
1337 | client->state = state; |
1338 | ||
a34b57c0 | 1339 | return 0; |
c3e2adea | 1340 | } |
a9aff361 | 1341 | |
c3e2adea | 1342 | client->transaction_id = random_u32() & htobe32(0x00ffffff); |
346e13a2 | 1343 | client->transaction_start = time_now; |
d1b0afe3 | 1344 | |
c9393e8c YW |
1345 | r = event_reset_time(client->event, &client->timeout_resend, |
1346 | clock_boottime_or_monotonic(), | |
1347 | 0, 0, | |
1348 | client_timeout_resend, client, | |
1349 | client->event_priority, "dhcp6-resend-timeout", true); | |
9021bb9f | 1350 | if (r < 0) |
7ac6c26a | 1351 | goto error; |
9021bb9f | 1352 | |
f12abb48 | 1353 | return 0; |
7ac6c26a PF |
1354 | |
1355 | error: | |
1356 | client_reset(client); | |
1357 | return r; | |
f12abb48 PF |
1358 | } |
1359 | ||
0ae0e5cd | 1360 | int sd_dhcp6_client_stop(sd_dhcp6_client *client) { |
f667c150 TG |
1361 | assert_return(client, -EINVAL); |
1362 | ||
10c9ce61 | 1363 | client_stop(client, SD_DHCP6_CLIENT_EVENT_STOP); |
139b011a | 1364 | |
7ac6c26a PF |
1365 | client->fd = safe_close(client->fd); |
1366 | ||
139b011a PF |
1367 | return 0; |
1368 | } | |
1369 | ||
f667c150 TG |
1370 | int sd_dhcp6_client_is_running(sd_dhcp6_client *client) { |
1371 | assert_return(client, -EINVAL); | |
1372 | ||
1373 | return client->state != DHCP6_STATE_STOPPED; | |
1374 | } | |
1375 | ||
0ae0e5cd | 1376 | int sd_dhcp6_client_start(sd_dhcp6_client *client) { |
bbfa43ca | 1377 | enum DHCP6State state = DHCP6_STATE_SOLICITATION; |
2f8e7633 | 1378 | int r = 0; |
139b011a PF |
1379 | |
1380 | assert_return(client, -EINVAL); | |
1381 | assert_return(client->event, -EINVAL); | |
2f8e7633 | 1382 | assert_return(client->ifindex > 0, -EINVAL); |
c601ebf7 | 1383 | assert_return(in_addr_is_link_local(AF_INET6, (const union in_addr_union *) &client->local_address) > 0, -EINVAL); |
139b011a | 1384 | |
d7c9c21f | 1385 | if (!IN_SET(client->state, DHCP6_STATE_STOPPED)) |
63348d13 | 1386 | return -EBUSY; |
d7c9c21f | 1387 | |
f311a62b PF |
1388 | if (!client->information_request && !client->request) |
1389 | return -EINVAL; | |
1390 | ||
c806ffb9 | 1391 | r = client_reset(client); |
f12abb48 PF |
1392 | if (r < 0) |
1393 | return r; | |
1394 | ||
bbfa43ca PF |
1395 | r = client_ensure_iaid(client); |
1396 | if (r < 0) | |
1397 | return r; | |
1398 | ||
cc22955c TH |
1399 | r = client_ensure_duid(client); |
1400 | if (r < 0) | |
1401 | return r; | |
1402 | ||
10a0f27b PF |
1403 | if (client->fd < 0) { |
1404 | r = dhcp6_network_bind_udp_socket(client->ifindex, &client->local_address); | |
1405 | if (r < 0) { | |
1406 | _cleanup_free_ char *p = NULL; | |
1407 | ||
1408 | (void) in_addr_to_string(AF_INET6, (const union in_addr_union*) &client->local_address, &p); | |
1409 | return log_dhcp6_client_errno(client, r, | |
1410 | "Failed to bind to UDP socket at address %s: %m", strna(p)); | |
1411 | } | |
bd9a7221 | 1412 | |
10a0f27b | 1413 | client->fd = r; |
bd9a7221 | 1414 | } |
bbfa43ca | 1415 | |
bbfa43ca PF |
1416 | if (client->information_request) |
1417 | state = DHCP6_STATE_INFORMATION_REQUEST; | |
1418 | ||
1419 | log_dhcp6_client(client, "Started in %s mode", | |
483d099e ZJS |
1420 | client->information_request? "Information request": |
1421 | "Managed"); | |
bbfa43ca PF |
1422 | |
1423 | return client_start(client, state); | |
139b011a PF |
1424 | } |
1425 | ||
32d20645 | 1426 | int sd_dhcp6_client_attach_event(sd_dhcp6_client *client, sd_event *event, int64_t priority) { |
139b011a PF |
1427 | int r; |
1428 | ||
1429 | assert_return(client, -EINVAL); | |
1430 | assert_return(!client->event, -EBUSY); | |
1431 | ||
1432 | if (event) | |
1433 | client->event = sd_event_ref(event); | |
1434 | else { | |
1435 | r = sd_event_default(&client->event); | |
1436 | if (r < 0) | |
1437 | return 0; | |
1438 | } | |
1439 | ||
1440 | client->event_priority = priority; | |
1441 | ||
1442 | return 0; | |
1443 | } | |
1444 | ||
1445 | int sd_dhcp6_client_detach_event(sd_dhcp6_client *client) { | |
1446 | assert_return(client, -EINVAL); | |
1447 | ||
1448 | client->event = sd_event_unref(client->event); | |
1449 | ||
1450 | return 0; | |
1451 | } | |
1452 | ||
1453 | sd_event *sd_dhcp6_client_get_event(sd_dhcp6_client *client) { | |
a1140666 | 1454 | assert_return(client, NULL); |
139b011a PF |
1455 | |
1456 | return client->event; | |
1457 | } | |
1458 | ||
8301aa0b YW |
1459 | static sd_dhcp6_client *dhcp6_client_free(sd_dhcp6_client *client) { |
1460 | assert(client); | |
139b011a | 1461 | |
c9393e8c YW |
1462 | client->timeout_resend = sd_event_source_unref(client->timeout_resend); |
1463 | client->timeout_resend_expire = sd_event_source_unref(client->timeout_resend_expire); | |
1464 | client->timeout_t1 = sd_event_source_unref(client->timeout_t1); | |
1465 | client->timeout_t2 = sd_event_source_unref(client->timeout_t2); | |
1466 | ||
3733eec3 LP |
1467 | client_reset(client); |
1468 | ||
10a0f27b PF |
1469 | client->fd = safe_close(client->fd); |
1470 | ||
3733eec3 | 1471 | sd_dhcp6_client_detach_event(client); |
3733eec3 LP |
1472 | |
1473 | free(client->req_opts); | |
8006aa32 | 1474 | free(client->fqdn); |
6b430fdb | 1475 | return mfree(client); |
139b011a PF |
1476 | } |
1477 | ||
8301aa0b YW |
1478 | DEFINE_TRIVIAL_REF_UNREF_FUNC(sd_dhcp6_client, sd_dhcp6_client, dhcp6_client_free); |
1479 | ||
0ae0e5cd | 1480 | int sd_dhcp6_client_new(sd_dhcp6_client **ret) { |
4afd3348 | 1481 | _cleanup_(sd_dhcp6_client_unrefp) sd_dhcp6_client *client = NULL; |
8b8ecac8 | 1482 | _cleanup_free_ be16_t *req_opts = NULL; |
da6fe470 | 1483 | size_t t; |
139b011a PF |
1484 | |
1485 | assert_return(ret, -EINVAL); | |
1486 | ||
8b8ecac8 YW |
1487 | req_opts = new(be16_t, ELEMENTSOF(default_req_opts)); |
1488 | if (!req_opts) | |
139b011a PF |
1489 | return -ENOMEM; |
1490 | ||
8b8ecac8 YW |
1491 | for (t = 0; t < ELEMENTSOF(default_req_opts); t++) |
1492 | req_opts[t] = htobe16(default_req_opts[t]); | |
c806ffb9 | 1493 | |
8b8ecac8 YW |
1494 | client = new(sd_dhcp6_client, 1); |
1495 | if (!client) | |
da6fe470 PF |
1496 | return -ENOMEM; |
1497 | ||
8b8ecac8 YW |
1498 | *client = (sd_dhcp6_client) { |
1499 | .n_ref = 1, | |
1500 | .ia_na.type = SD_DHCP6_OPTION_IA_NA, | |
1501 | .ia_pd.type = SD_DHCP6_OPTION_IA_PD, | |
1502 | .ifindex = -1, | |
1503 | .request = DHCP6_REQUEST_IA_NA, | |
1504 | .fd = -1, | |
1505 | .req_opts_len = ELEMENTSOF(default_req_opts), | |
1506 | .req_opts = TAKE_PTR(req_opts), | |
1507 | }; | |
da6fe470 | 1508 | |
1cc6c93a | 1509 | *ret = TAKE_PTR(client); |
139b011a PF |
1510 | |
1511 | return 0; | |
1512 | } |