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e5719363 JT |
1 | /*** |
2 | This file is part of systemd. | |
3 | ||
4 | Copyright 2016-2017 Jörg Thalheim <joerg@thalheim.io> | |
5 | Copyright 2015-2017 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved. | |
6 | ||
7 | systemd is free software; you can redistribute it and/or modify it | |
8 | under the terms of the GNU Lesser General Public License as published by | |
9 | the Free Software Foundation; either version 2.1 of the License, or | |
10 | (at your option) any later version. | |
11 | ||
12 | systemd is distributed in the hope that it will be useful, but | |
13 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
15 | Lesser General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU Lesser General Public License | |
18 | along with systemd; If not, see <http://www.gnu.org/licenses/>. | |
19 | ***/ | |
20 | ||
21 | #include <sys/ioctl.h> | |
22 | #include <net/if.h> | |
23 | ||
24 | #include "alloc-util.h" | |
25 | #include "parse-util.h" | |
26 | #include "fd-util.h" | |
27 | #include "strv.h" | |
28 | #include "hexdecoct.h" | |
29 | #include "string-util.h" | |
30 | #include "wireguard.h" | |
31 | #include "networkd-link.h" | |
32 | #include "networkd-util.h" | |
33 | #include "networkd-manager.h" | |
34 | #include "wireguard-netlink.h" | |
35 | ||
36 | static void resolve_endpoints(NetDev *netdev); | |
37 | ||
38 | static WireguardPeer *wireguard_peer_new(Wireguard *w, unsigned section) { | |
39 | WireguardPeer *peer; | |
40 | ||
41 | assert(w); | |
42 | ||
43 | if (w->last_peer_section == section && w->peers) | |
44 | return w->peers; | |
45 | ||
46 | peer = new0(WireguardPeer, 1); | |
47 | if (!peer) | |
48 | return NULL; | |
49 | peer->flags = WGPEER_F_REPLACE_ALLOWEDIPS; | |
50 | ||
51 | LIST_PREPEND(peers, w->peers, peer); | |
52 | w->last_peer_section = section; | |
53 | ||
54 | return peer; | |
55 | } | |
56 | ||
57 | static int set_wireguard_interface(NetDev *netdev) { | |
58 | int r; | |
59 | unsigned int i, j; | |
60 | WireguardPeer *peer, *peer_start; | |
61 | WireguardIPmask *mask, *mask_start = NULL; | |
62 | _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *message = NULL; | |
63 | Wireguard *w; | |
64 | uint32_t serial; | |
65 | ||
66 | assert(netdev); | |
67 | w = WIREGUARD(netdev); | |
68 | assert(w); | |
69 | ||
70 | peer_start = w->peers; | |
71 | ||
72 | do { | |
73 | message = sd_netlink_message_unref(message); | |
74 | ||
75 | r = sd_genl_message_new(netdev->manager->genl, SD_GENL_WIREGUARD, WG_CMD_SET_DEVICE, &message); | |
76 | if (r < 0) | |
77 | return log_netdev_error_errno(netdev, r, "Failed to allocate generic netlink message: %m"); | |
78 | ||
79 | r = sd_netlink_message_append_string(message, WGDEVICE_A_IFNAME, netdev->ifname); | |
80 | if (r < 0) | |
81 | return log_netdev_error_errno(netdev, r, "Could not append wireguard interface name: %m"); | |
82 | ||
83 | if (peer_start == w->peers) { | |
84 | r = sd_netlink_message_append_data(message, WGDEVICE_A_PRIVATE_KEY, &w->private_key, WG_KEY_LEN); | |
85 | if (r < 0) | |
86 | return log_netdev_error_errno(netdev, r, "Could not append wireguard private key: %m"); | |
87 | ||
88 | r = sd_netlink_message_append_u16(message, WGDEVICE_A_LISTEN_PORT, w->port); | |
89 | if (r < 0) | |
90 | return log_netdev_error_errno(netdev, r, "Could not append wireguard port: %m"); | |
91 | ||
92 | r = sd_netlink_message_append_u32(message, WGDEVICE_A_FWMARK, w->fwmark); | |
93 | if (r < 0) | |
94 | return log_netdev_error_errno(netdev, r, "Could not append wireguard fwmark: %m"); | |
95 | ||
96 | r = sd_netlink_message_append_u32(message, WGDEVICE_A_FLAGS, w->flags); | |
97 | if (r < 0) | |
98 | return log_netdev_error_errno(netdev, r, "Could not append wireguard flags: %m"); | |
99 | } | |
100 | ||
101 | r = sd_netlink_message_open_container(message, WGDEVICE_A_PEERS); | |
102 | if (r < 0) | |
103 | return log_netdev_error_errno(netdev, r, "Could not append wireguard peer attributes: %m"); | |
104 | ||
105 | i = 0; | |
106 | ||
107 | LIST_FOREACH(peers, peer, peer_start) { | |
108 | r = sd_netlink_message_open_array(message, ++i); | |
109 | if (r < 0) | |
110 | break; | |
111 | ||
112 | r = sd_netlink_message_append_data(message, WGPEER_A_PUBLIC_KEY, &peer->public_key, sizeof(peer->public_key)); | |
113 | if (r < 0) | |
114 | break; | |
115 | ||
116 | if (!mask_start) { | |
117 | r = sd_netlink_message_append_data(message, WGPEER_A_PRESHARED_KEY, &peer->preshared_key, WG_KEY_LEN); | |
118 | if (r < 0) | |
119 | break; | |
120 | ||
121 | r = sd_netlink_message_append_u32(message, WGPEER_A_FLAGS, peer->flags); | |
122 | if (r < 0) | |
123 | break; | |
124 | ||
125 | r = sd_netlink_message_append_u32(message, WGPEER_A_PERSISTENT_KEEPALIVE_INTERVAL, peer->persistent_keepalive_interval); | |
126 | if (r < 0) | |
127 | break; | |
128 | ||
129 | if (peer->endpoint.sa.sa_family == AF_INET) { | |
130 | r = sd_netlink_message_append_data(message, WGPEER_A_ENDPOINT, &peer->endpoint.in, sizeof(peer->endpoint.in)); | |
131 | if (r < 0) | |
132 | break; | |
133 | } else if (peer->endpoint.sa.sa_family == AF_INET6) { | |
134 | r = sd_netlink_message_append_data(message, WGPEER_A_ENDPOINT, &peer->endpoint.in6, sizeof(peer->endpoint.in6)); | |
135 | if (r < 0) | |
136 | break; | |
137 | } | |
138 | ||
139 | mask_start = peer->ipmasks; | |
140 | } | |
141 | ||
142 | r = sd_netlink_message_open_container(message, WGPEER_A_ALLOWEDIPS); | |
143 | if (r < 0) { | |
144 | mask_start = NULL; | |
145 | break; | |
146 | } | |
147 | j = 0; | |
148 | LIST_FOREACH(ipmasks, mask, mask_start) { | |
149 | r = sd_netlink_message_open_array(message, ++j); | |
150 | if (r < 0) | |
151 | break; | |
152 | ||
153 | r = sd_netlink_message_append_u16(message, WGALLOWEDIP_A_FAMILY, mask->family); | |
154 | if (r < 0) | |
155 | break; | |
156 | ||
157 | if (mask->family == AF_INET) { | |
158 | r = sd_netlink_message_append_in_addr(message, WGALLOWEDIP_A_IPADDR, &mask->ip.in); | |
159 | if (r < 0) | |
160 | break; | |
161 | } else if (mask->family == AF_INET6) { | |
162 | r = sd_netlink_message_append_in6_addr(message, WGALLOWEDIP_A_IPADDR, &mask->ip.in6); | |
163 | if (r < 0) | |
164 | break; | |
165 | } | |
166 | ||
167 | r = sd_netlink_message_append_u8(message, WGALLOWEDIP_A_CIDR_MASK, mask->cidr); | |
168 | if (r < 0) | |
169 | break; | |
170 | ||
171 | r = sd_netlink_message_close_container(message); | |
172 | if (r < 0) | |
173 | return log_netdev_error_errno(netdev, r, "Could not add wireguard allowed ip: %m"); | |
174 | } | |
175 | mask_start = mask; | |
176 | if (mask_start) { | |
177 | r = sd_netlink_message_cancel_array(message); | |
178 | if (r < 0) | |
179 | return log_netdev_error_errno(netdev, r, "Could not cancel wireguard allowed ip message attribute: %m"); | |
180 | } | |
181 | r = sd_netlink_message_close_container(message); | |
182 | if (r < 0) | |
183 | return log_netdev_error_errno(netdev, r, "Could not add wireguard allowed ip: %m"); | |
184 | ||
185 | r = sd_netlink_message_close_container(message); | |
186 | if (r < 0) | |
187 | return log_netdev_error_errno(netdev, r, "Could not add wireguard peer: %m"); | |
188 | } | |
189 | ||
190 | peer_start = peer; | |
191 | if (peer_start && !mask_start) { | |
192 | r = sd_netlink_message_cancel_array(message); | |
193 | if (r < 0) | |
194 | return log_netdev_error_errno(netdev, r, "Could not cancel wireguard peers: %m"); | |
195 | } | |
196 | ||
197 | r = sd_netlink_message_close_container(message); | |
198 | if (r < 0) | |
199 | return log_netdev_error_errno(netdev, r, "Could not close wireguard container: %m"); | |
200 | ||
201 | r = sd_netlink_send(netdev->manager->genl, message, &serial); | |
202 | if (r < 0) | |
203 | return log_netdev_error_errno(netdev, r, "Could not set wireguard device: %m"); | |
204 | ||
205 | } while (peer || mask_start); | |
206 | ||
207 | return 0; | |
208 | } | |
209 | ||
210 | static WireguardEndpoint* wireguard_endpoint_free(WireguardEndpoint *e) { | |
211 | if (!e) | |
212 | return NULL; | |
213 | netdev_unref(e->netdev); | |
214 | e->host = mfree(e->host); | |
215 | e->port = mfree(e->port); | |
216 | return mfree(e); | |
217 | } | |
218 | ||
219 | DEFINE_TRIVIAL_CLEANUP_FUNC(WireguardEndpoint*, wireguard_endpoint_free); | |
220 | ||
221 | static int on_resolve_retry(sd_event_source *s, usec_t usec, void *userdata) { | |
222 | NetDev *netdev = userdata; | |
223 | Wireguard *w; | |
224 | ||
225 | assert(netdev); | |
226 | w = WIREGUARD(netdev); | |
227 | assert(w); | |
228 | ||
229 | w->resolve_retry_event_source = sd_event_source_unref(w->resolve_retry_event_source); | |
230 | ||
ae2a15bc | 231 | w->unresolved_endpoints = TAKE_PTR(w->failed_endpoints); |
e5719363 JT |
232 | |
233 | resolve_endpoints(netdev); | |
234 | ||
235 | return 0; | |
236 | } | |
237 | ||
238 | /* | |
239 | * Given the number of retries this function will return will an exponential | |
240 | * increasing time in milliseconds to wait starting at 200ms and capped at 25 seconds. | |
241 | */ | |
242 | static int exponential_backoff_milliseconds(unsigned n_retries) { | |
243 | return (2 << MAX(n_retries, 7U)) * 100 * USEC_PER_MSEC; | |
244 | } | |
245 | ||
246 | static int wireguard_resolve_handler(sd_resolve_query *q, | |
247 | int ret, | |
248 | const struct addrinfo *ai, | |
249 | void *userdata) { | |
250 | NetDev *netdev; | |
251 | Wireguard *w; | |
252 | _cleanup_(wireguard_endpoint_freep) WireguardEndpoint *e; | |
253 | int r; | |
254 | ||
255 | assert(userdata); | |
256 | e = userdata; | |
257 | netdev = e->netdev; | |
258 | ||
259 | assert(netdev); | |
260 | w = WIREGUARD(netdev); | |
261 | assert(w); | |
262 | ||
263 | w->resolve_query = sd_resolve_query_unref(w->resolve_query); | |
264 | ||
265 | if (ret != 0) { | |
266 | log_netdev_error(netdev, "Failed to resolve host '%s:%s': %s", e->host, e->port, gai_strerror(ret)); | |
267 | LIST_PREPEND(endpoints, w->failed_endpoints, e); | |
268 | e = NULL; | |
269 | } else if ((ai->ai_family == AF_INET && ai->ai_addrlen == sizeof(struct sockaddr_in)) || | |
270 | (ai->ai_family == AF_INET6 && ai->ai_addrlen == sizeof(struct sockaddr_in6))) | |
271 | memcpy(&e->peer->endpoint, ai->ai_addr, ai->ai_addrlen); | |
272 | else | |
273 | log_netdev_error(netdev, "Neither IPv4 nor IPv6 address found for peer endpoint: %s:%s", e->host, e->port); | |
274 | ||
275 | if (w->unresolved_endpoints) { | |
276 | resolve_endpoints(netdev); | |
277 | return 0; | |
278 | } | |
279 | ||
280 | set_wireguard_interface(netdev); | |
281 | if (w->failed_endpoints) { | |
282 | w->n_retries++; | |
283 | r = sd_event_add_time(netdev->manager->event, | |
284 | &w->resolve_retry_event_source, | |
285 | CLOCK_MONOTONIC, | |
286 | now(CLOCK_MONOTONIC) + exponential_backoff_milliseconds(w->n_retries), | |
287 | 0, | |
288 | on_resolve_retry, | |
289 | netdev); | |
290 | if (r < 0) | |
291 | log_netdev_warning_errno(netdev, r, "Could not arm resolve retry handler: %m"); | |
292 | } | |
293 | ||
294 | return 0; | |
295 | } | |
296 | ||
297 | static void resolve_endpoints(NetDev *netdev) { | |
298 | int r = 0; | |
299 | Wireguard *w; | |
300 | WireguardEndpoint *endpoint; | |
301 | static const struct addrinfo hints = { | |
302 | .ai_family = AF_UNSPEC, | |
303 | .ai_socktype = SOCK_DGRAM, | |
304 | .ai_protocol = IPPROTO_UDP | |
305 | }; | |
306 | ||
307 | assert(netdev); | |
308 | w = WIREGUARD(netdev); | |
309 | assert(w); | |
310 | ||
311 | LIST_FOREACH(endpoints, endpoint, w->unresolved_endpoints) { | |
312 | r = sd_resolve_getaddrinfo(netdev->manager->resolve, | |
313 | &w->resolve_query, | |
314 | endpoint->host, | |
315 | endpoint->port, | |
316 | &hints, | |
317 | wireguard_resolve_handler, | |
318 | endpoint); | |
319 | ||
320 | if (r == -ENOBUFS) | |
321 | break; | |
322 | ||
323 | LIST_REMOVE(endpoints, w->unresolved_endpoints, endpoint); | |
324 | ||
325 | if (r < 0) | |
326 | log_netdev_error_errno(netdev, r, "Failed create resolver: %m"); | |
327 | } | |
328 | } | |
329 | ||
330 | ||
331 | static int netdev_wireguard_post_create(NetDev *netdev, Link *link, sd_netlink_message *m) { | |
332 | Wireguard *w; | |
333 | ||
334 | assert(netdev); | |
335 | w = WIREGUARD(netdev); | |
336 | assert(w); | |
337 | ||
338 | set_wireguard_interface(netdev); | |
339 | resolve_endpoints(netdev); | |
340 | return 0; | |
341 | } | |
342 | ||
343 | int config_parse_wireguard_listen_port(const char *unit, | |
344 | const char *filename, | |
345 | unsigned line, | |
346 | const char *section, | |
347 | unsigned section_line, | |
348 | const char *lvalue, | |
349 | int ltype, | |
350 | const char *rvalue, | |
351 | void *data, | |
352 | void *userdata) { | |
353 | uint16_t *s = data; | |
354 | uint16_t port = 0; | |
355 | int r; | |
356 | ||
357 | assert(rvalue); | |
358 | assert(data); | |
359 | ||
360 | if (!streq(rvalue, "auto")) { | |
361 | r = parse_ip_port(rvalue, &port); | |
362 | if (r < 0) | |
363 | log_syntax(unit, LOG_ERR, filename, line, r, "Invalid port specification, ignoring assignment: %s", rvalue); | |
364 | } | |
365 | ||
366 | *s = port; | |
367 | ||
368 | return 0; | |
369 | } | |
370 | ||
371 | static int parse_wireguard_key(const char *unit, | |
372 | const char *filename, | |
373 | unsigned line, | |
374 | const char *section, | |
375 | unsigned section_line, | |
376 | const char *lvalue, | |
377 | int ltype, | |
378 | const char *rvalue, | |
379 | void *data, | |
380 | void *userdata) { | |
381 | _cleanup_free_ void *key = NULL; | |
382 | size_t len; | |
383 | int r; | |
384 | ||
385 | assert(filename); | |
386 | assert(rvalue); | |
387 | assert(userdata); | |
388 | ||
389 | r = unbase64mem(rvalue, strlen(rvalue), &key, &len); | |
390 | if (r < 0) { | |
391 | log_syntax(unit, LOG_ERR, filename, line, r, "Could not parse wireguard key \"%s\", ignoring assignment: %m", rvalue); | |
392 | return 0; | |
393 | } | |
394 | if (len != WG_KEY_LEN) { | |
395 | log_syntax(unit, LOG_ERR, filename, line, EINVAL, | |
396 | "Wireguard key is too short, ignoring assignment: %s", rvalue); | |
397 | return 0; | |
398 | } | |
399 | ||
400 | memcpy(userdata, key, WG_KEY_LEN); | |
401 | return true; | |
402 | } | |
403 | ||
404 | int config_parse_wireguard_private_key(const char *unit, | |
405 | const char *filename, | |
406 | unsigned line, | |
407 | const char *section, | |
408 | unsigned section_line, | |
409 | const char *lvalue, | |
410 | int ltype, | |
411 | const char *rvalue, | |
412 | void *data, | |
413 | void *userdata) { | |
414 | Wireguard *w; | |
415 | ||
416 | assert(data); | |
417 | ||
418 | w = WIREGUARD(data); | |
419 | ||
420 | assert(w); | |
421 | ||
422 | return parse_wireguard_key(unit, | |
423 | filename, | |
424 | line, | |
425 | section, | |
426 | section_line, | |
427 | lvalue, | |
428 | ltype, | |
429 | rvalue, | |
430 | data, | |
431 | &w->private_key); | |
432 | ||
433 | } | |
434 | ||
435 | int config_parse_wireguard_preshared_key(const char *unit, | |
436 | const char *filename, | |
437 | unsigned line, | |
438 | const char *section, | |
439 | unsigned section_line, | |
440 | const char *lvalue, | |
441 | int ltype, | |
442 | const char *rvalue, | |
443 | void *data, | |
444 | void *userdata) { | |
445 | Wireguard *w; | |
446 | WireguardPeer *peer; | |
447 | ||
448 | assert(data); | |
449 | ||
450 | w = WIREGUARD(data); | |
451 | ||
452 | assert(w); | |
453 | ||
454 | peer = wireguard_peer_new(w, section_line); | |
455 | if (!peer) | |
456 | return log_oom(); | |
457 | ||
458 | return parse_wireguard_key(unit, | |
459 | filename, | |
460 | line, | |
461 | section, | |
462 | section_line, | |
463 | lvalue, | |
464 | ltype, | |
465 | rvalue, | |
466 | data, | |
467 | peer->preshared_key); | |
468 | } | |
469 | ||
470 | ||
471 | int config_parse_wireguard_public_key(const char *unit, | |
472 | const char *filename, | |
473 | unsigned line, | |
474 | const char *section, | |
475 | unsigned section_line, | |
476 | const char *lvalue, | |
477 | int ltype, | |
478 | const char *rvalue, | |
479 | void *data, | |
480 | void *userdata) { | |
481 | Wireguard *w; | |
482 | WireguardPeer *peer; | |
483 | ||
484 | assert(data); | |
485 | ||
486 | w = WIREGUARD(data); | |
487 | ||
488 | assert(w); | |
489 | ||
490 | peer = wireguard_peer_new(w, section_line); | |
491 | if (!peer) | |
492 | return log_oom(); | |
493 | ||
494 | return parse_wireguard_key(unit, | |
495 | filename, | |
496 | line, | |
497 | section, | |
498 | section_line, | |
499 | lvalue, | |
500 | ltype, | |
501 | rvalue, | |
502 | data, | |
503 | peer->public_key); | |
504 | } | |
505 | ||
506 | int config_parse_wireguard_allowed_ips(const char *unit, | |
507 | const char *filename, | |
508 | unsigned line, | |
509 | const char *section, | |
510 | unsigned section_line, | |
511 | const char *lvalue, | |
512 | int ltype, | |
513 | const char *rvalue, | |
514 | void *data, | |
515 | void *userdata) { | |
516 | union in_addr_union addr; | |
517 | unsigned char prefixlen; | |
518 | int r, family; | |
519 | Wireguard *w; | |
520 | WireguardPeer *peer; | |
521 | WireguardIPmask *ipmask; | |
522 | ||
523 | assert(rvalue); | |
524 | assert(data); | |
525 | ||
526 | w = WIREGUARD(data); | |
527 | ||
528 | peer = wireguard_peer_new(w, section_line); | |
529 | if (!peer) | |
530 | return log_oom(); | |
531 | ||
532 | for (;;) { | |
533 | _cleanup_free_ char *word = NULL; | |
534 | ||
535 | r = extract_first_word(&rvalue, &word, "," WHITESPACE, 0); | |
536 | if (r == 0) | |
537 | break; | |
538 | if (r == -ENOMEM) | |
539 | return log_oom(); | |
540 | if (r < 0) { | |
541 | log_syntax(unit, LOG_ERR, filename, line, r, "Failed to split allowed ips \"%s\" option: %m", rvalue); | |
542 | break; | |
543 | } | |
544 | ||
545 | r = in_addr_prefix_from_string_auto(word, &family, &addr, &prefixlen); | |
546 | if (r < 0) { | |
547 | log_syntax(unit, LOG_ERR, filename, line, r, "Network address is invalid, ignoring assignment: %s", word); | |
548 | return 0; | |
549 | } | |
550 | ||
551 | ipmask = new0(WireguardIPmask, 1); | |
552 | if (!ipmask) | |
553 | return log_oom(); | |
554 | ipmask->family = family; | |
555 | ipmask->ip.in6 = addr.in6; | |
556 | ipmask->cidr = prefixlen; | |
557 | ||
558 | LIST_PREPEND(ipmasks, peer->ipmasks, ipmask); | |
559 | } | |
560 | ||
561 | return 0; | |
562 | } | |
563 | ||
564 | int config_parse_wireguard_endpoint(const char *unit, | |
565 | const char *filename, | |
566 | unsigned line, | |
567 | const char *section, | |
568 | unsigned section_line, | |
569 | const char *lvalue, | |
570 | int ltype, | |
571 | const char *rvalue, | |
572 | void *data, | |
573 | void *userdata) { | |
574 | Wireguard *w; | |
575 | WireguardPeer *peer; | |
576 | size_t len; | |
577 | const char *begin, *end = NULL; | |
578 | _cleanup_free_ char *host = NULL, *port = NULL; | |
579 | _cleanup_(wireguard_endpoint_freep) WireguardEndpoint *endpoint = NULL; | |
580 | ||
581 | assert(data); | |
582 | assert(rvalue); | |
583 | ||
584 | w = WIREGUARD(data); | |
585 | ||
586 | assert(w); | |
587 | ||
588 | peer = wireguard_peer_new(w, section_line); | |
589 | if (!peer) | |
590 | return log_oom(); | |
591 | ||
592 | endpoint = new0(WireguardEndpoint, 1); | |
593 | if (!endpoint) | |
594 | return log_oom(); | |
595 | ||
596 | if (rvalue[0] == '[') { | |
597 | begin = &rvalue[1]; | |
598 | end = strchr(rvalue, ']'); | |
599 | if (!end) { | |
600 | log_syntax(unit, LOG_ERR, filename, line, 0, "Unable to find matching brace of endpoint, ignoring assignment: %s", rvalue); | |
601 | return 0; | |
602 | } | |
603 | len = end - begin; | |
604 | ++end; | |
605 | if (*end != ':' || !*(end + 1)) { | |
606 | log_syntax(unit, LOG_ERR, filename, line, 0, "Unable to find port of endpoint: %s", rvalue); | |
607 | return 0; | |
608 | } | |
609 | ++end; | |
610 | } else { | |
611 | begin = rvalue; | |
612 | end = strrchr(rvalue, ':'); | |
613 | if (!end || !*(end + 1)) { | |
614 | log_syntax(unit, LOG_ERR, filename, line, 0, "Unable to find port of endpoint: %s", rvalue); | |
615 | return 0; | |
616 | } | |
617 | len = end - begin; | |
618 | ++end; | |
619 | } | |
620 | ||
621 | host = strndup(begin, len); | |
622 | if (!host) | |
623 | return log_oom(); | |
624 | ||
625 | port = strdup(end); | |
626 | if (!port) | |
627 | return log_oom(); | |
628 | ||
1cc6c93a YW |
629 | endpoint->peer = TAKE_PTR(peer); |
630 | endpoint->host = TAKE_PTR(host); | |
631 | endpoint->port = TAKE_PTR(port); | |
e5719363 JT |
632 | endpoint->netdev = netdev_ref(data); |
633 | LIST_PREPEND(endpoints, w->unresolved_endpoints, endpoint); | |
e5719363 JT |
634 | endpoint = NULL; |
635 | ||
636 | return 0; | |
637 | } | |
638 | ||
639 | int config_parse_wireguard_keepalive(const char *unit, | |
640 | const char *filename, | |
641 | unsigned line, | |
642 | const char *section, | |
643 | unsigned section_line, | |
644 | const char *lvalue, | |
645 | int ltype, | |
646 | const char *rvalue, | |
647 | void *data, | |
648 | void *userdata) { | |
649 | int r; | |
650 | uint16_t keepalive = 0; | |
651 | Wireguard *w; | |
652 | WireguardPeer *peer; | |
653 | ||
654 | assert(rvalue); | |
655 | assert(data); | |
656 | ||
657 | w = WIREGUARD(data); | |
658 | ||
659 | assert(w); | |
660 | ||
661 | peer = wireguard_peer_new(w, section_line); | |
662 | if (!peer) | |
663 | return log_oom(); | |
664 | ||
665 | if (streq(rvalue, "off")) | |
666 | keepalive = 0; | |
667 | else { | |
668 | r = safe_atou16(rvalue, &keepalive); | |
669 | if (r < 0) | |
670 | log_syntax(unit, LOG_ERR, filename, line, r, "The persistent keepalive interval must be 0-65535. Ignore assignment: %s", rvalue); | |
671 | } | |
672 | ||
673 | peer->persistent_keepalive_interval = keepalive; | |
674 | return 0; | |
675 | } | |
676 | ||
677 | static void wireguard_init(NetDev *netdev) { | |
678 | Wireguard *w; | |
679 | ||
680 | assert(netdev); | |
681 | ||
682 | w = WIREGUARD(netdev); | |
683 | ||
684 | assert(w); | |
685 | ||
686 | w->flags = WGDEVICE_F_REPLACE_PEERS; | |
687 | } | |
688 | ||
689 | static void wireguard_done(NetDev *netdev) { | |
690 | Wireguard *w; | |
691 | WireguardPeer *peer; | |
692 | WireguardIPmask *mask; | |
693 | ||
694 | assert(netdev); | |
695 | w = WIREGUARD(netdev); | |
696 | assert(!w->unresolved_endpoints); | |
697 | w->resolve_retry_event_source = sd_event_source_unref(w->resolve_retry_event_source); | |
698 | ||
699 | while ((peer = w->peers)) { | |
700 | LIST_REMOVE(peers, w->peers, peer); | |
701 | while ((mask = peer->ipmasks)) { | |
702 | LIST_REMOVE(ipmasks, peer->ipmasks, mask); | |
703 | free(mask); | |
704 | } | |
705 | free(peer); | |
706 | } | |
707 | } | |
708 | ||
709 | const NetDevVTable wireguard_vtable = { | |
710 | .object_size = sizeof(Wireguard), | |
711 | .sections = "Match\0NetDev\0WireGuard\0WireGuardPeer\0", | |
712 | .post_create = netdev_wireguard_post_create, | |
713 | .init = wireguard_init, | |
714 | .done = wireguard_done, | |
715 | .create_type = NETDEV_CREATE_INDEPENDENT, | |
716 | }; |