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f579559b TG |
1 | /*** |
2 | This file is part of systemd. | |
3 | ||
4 | Copyright 2013 Tom Gundersen <teg@jklm.no> | |
5 | ||
6 | systemd is free software; you can redistribute it and/or modify it | |
7 | under the terms of the GNU Lesser General Public License as published by | |
8 | the Free Software Foundation; either version 2.1 of the License, or | |
9 | (at your option) any later version. | |
10 | ||
11 | systemd is distributed in the hope that it will be useful, but | |
12 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
14 | Lesser General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU Lesser General Public License | |
17 | along with systemd; If not, see <http://www.gnu.org/licenses/>. | |
18 | ***/ | |
19 | ||
091a364c | 20 | #include <sys/socket.h> |
bbf7c048 | 21 | #include <linux/if.h> |
bce67bbe | 22 | #include <linux/fib_rules.h> |
3bef724f | 23 | |
fc2f9534 | 24 | #include "sd-daemon.h" |
07630cea | 25 | #include "sd-netlink.h" |
fc2f9534 | 26 | |
b5efdb8a | 27 | #include "alloc-util.h" |
a97dcc12 | 28 | #include "bus-util.h" |
07630cea | 29 | #include "conf-parser.h" |
a97dcc12 | 30 | #include "def.h" |
482d1aeb | 31 | #include "dns-domain.h" |
3ffd4af2 | 32 | #include "fd-util.h" |
0d39fa9c | 33 | #include "fileio.h" |
07630cea | 34 | #include "libudev-private.h" |
4f5f911e | 35 | #include "local-addresses.h" |
07630cea | 36 | #include "netlink-util.h" |
23f53b99 | 37 | #include "networkd-manager.h" |
00616955 | 38 | #include "ordered-set.h" |
07630cea LP |
39 | #include "path-util.h" |
40 | #include "set.h" | |
41 | #include "udev-util.h" | |
42 | #include "virt.h" | |
505f8da7 | 43 | |
be660c37 AR |
44 | /* use 8 MB for receive socket kernel queue. */ |
45 | #define RCVBUF_SIZE (8*1024*1024) | |
46 | ||
2ad8416d ZJS |
47 | const char* const network_dirs[] = { |
48 | "/etc/systemd/network", | |
49 | "/run/systemd/network", | |
50 | "/usr/lib/systemd/network", | |
eed0eee8 | 51 | #ifdef HAVE_SPLIT_USR |
2ad8416d ZJS |
52 | "/lib/systemd/network", |
53 | #endif | |
54 | NULL}; | |
55 | ||
11bf3cce LP |
56 | static int setup_default_address_pool(Manager *m) { |
57 | AddressPool *p; | |
58 | int r; | |
59 | ||
60 | assert(m); | |
61 | ||
62 | /* Add in the well-known private address ranges. */ | |
63 | ||
64 | r = address_pool_new_from_string(m, &p, AF_INET6, "fc00::", 7); | |
65 | if (r < 0) | |
66 | return r; | |
67 | ||
68 | r = address_pool_new_from_string(m, &p, AF_INET, "192.168.0.0", 16); | |
69 | if (r < 0) | |
70 | return r; | |
71 | ||
72 | r = address_pool_new_from_string(m, &p, AF_INET, "172.16.0.0", 12); | |
73 | if (r < 0) | |
74 | return r; | |
75 | ||
76 | r = address_pool_new_from_string(m, &p, AF_INET, "10.0.0.0", 8); | |
77 | if (r < 0) | |
78 | return r; | |
79 | ||
80 | return 0; | |
81 | } | |
82 | ||
9c0a72f9 TG |
83 | static int on_bus_retry(sd_event_source *s, usec_t usec, void *userdata) { |
84 | Manager *m = userdata; | |
85 | ||
86 | assert(s); | |
87 | assert(m); | |
88 | ||
89 | m->bus_retry_event_source = sd_event_source_unref(m->bus_retry_event_source); | |
90 | ||
91 | manager_connect_bus(m); | |
92 | ||
93 | return 0; | |
94 | } | |
95 | ||
96 | static int manager_reset_all(Manager *m) { | |
97 | Link *link; | |
98 | Iterator i; | |
99 | int r; | |
100 | ||
101 | assert(m); | |
102 | ||
103 | HASHMAP_FOREACH(link, m->links, i) { | |
104 | r = link_carrier_reset(link); | |
105 | if (r < 0) | |
2f3cf1f9 | 106 | log_link_warning_errno(link, r, "Could not reset carrier: %m"); |
9c0a72f9 TG |
107 | } |
108 | ||
109 | return 0; | |
110 | } | |
111 | ||
19070062 | 112 | static int match_prepare_for_sleep(sd_bus_message *message, void *userdata, sd_bus_error *ret_error) { |
9c0a72f9 TG |
113 | Manager *m = userdata; |
114 | int b, r; | |
115 | ||
19070062 | 116 | assert(message); |
9c0a72f9 TG |
117 | |
118 | r = sd_bus_message_read(message, "b", &b); | |
119 | if (r < 0) { | |
120 | log_debug_errno(r, "Failed to parse PrepareForSleep signal: %m"); | |
121 | return 0; | |
122 | } | |
123 | ||
124 | if (b) | |
125 | return 0; | |
126 | ||
127 | log_debug("Coming back from suspend, resetting all connections..."); | |
128 | ||
129 | manager_reset_all(m); | |
130 | ||
131 | return 0; | |
132 | } | |
133 | ||
134 | int manager_connect_bus(Manager *m) { | |
135 | int r; | |
136 | ||
137 | assert(m); | |
138 | ||
139 | r = sd_bus_default_system(&m->bus); | |
fb72b1d9 | 140 | if (r < 0) { |
9c0a72f9 | 141 | /* We failed to connect? Yuck, we must be in early |
d7ea7bb8 | 142 | * boot. Let's try in 5s again. */ |
9c0a72f9 TG |
143 | |
144 | log_debug_errno(r, "Failed to connect to bus, trying again in 5s: %m"); | |
145 | ||
146 | r = sd_event_add_time(m->event, &m->bus_retry_event_source, CLOCK_MONOTONIC, now(CLOCK_MONOTONIC) + 5*USEC_PER_SEC, 0, on_bus_retry, m); | |
147 | if (r < 0) | |
148 | return log_error_errno(r, "Failed to install bus reconnect time event: %m"); | |
149 | ||
150 | return 0; | |
7d6884b6 TA |
151 | } |
152 | ||
153 | if (r < 0) | |
9c0a72f9 TG |
154 | return r; |
155 | ||
9c0a72f9 TG |
156 | r = sd_bus_add_match(m->bus, &m->prepare_for_sleep_slot, |
157 | "type='signal'," | |
158 | "sender='org.freedesktop.login1'," | |
159 | "interface='org.freedesktop.login1.Manager'," | |
160 | "member='PrepareForSleep'," | |
161 | "path='/org/freedesktop/login1'", | |
162 | match_prepare_for_sleep, | |
163 | m); | |
164 | if (r < 0) | |
165 | return log_error_errno(r, "Failed to add match for PrepareForSleep: %m"); | |
166 | ||
e331e246 TG |
167 | r = sd_bus_add_object_vtable(m->bus, NULL, "/org/freedesktop/network1", "org.freedesktop.network1.Manager", manager_vtable, m); |
168 | if (r < 0) | |
169 | return log_error_errno(r, "Failed to add manager object vtable: %m"); | |
170 | ||
171 | r = sd_bus_add_fallback_vtable(m->bus, NULL, "/org/freedesktop/network1/link", "org.freedesktop.network1.Link", link_vtable, link_object_find, m); | |
172 | if (r < 0) | |
173 | return log_error_errno(r, "Failed to add link object vtable: %m"); | |
174 | ||
175 | r = sd_bus_add_node_enumerator(m->bus, NULL, "/org/freedesktop/network1/link", link_node_enumerator, m); | |
176 | if (r < 0) | |
177 | return log_error_errno(r, "Failed to add link enumerator: %m"); | |
3175fcde TG |
178 | |
179 | r = sd_bus_add_fallback_vtable(m->bus, NULL, "/org/freedesktop/network1/network", "org.freedesktop.network1.Network", network_vtable, network_object_find, m); | |
180 | if (r < 0) | |
181 | return log_error_errno(r, "Failed to add network object vtable: %m"); | |
182 | ||
183 | r = sd_bus_add_node_enumerator(m->bus, NULL, "/org/freedesktop/network1/network", network_node_enumerator, m); | |
184 | if (r < 0) | |
185 | return log_error_errno(r, "Failed to add network enumerator: %m"); | |
e331e246 TG |
186 | |
187 | r = sd_bus_request_name(m->bus, "org.freedesktop.network1", 0); | |
188 | if (r < 0) | |
189 | return log_error_errno(r, "Failed to register name: %m"); | |
190 | ||
191 | r = sd_bus_attach_event(m->bus, m->event, 0); | |
192 | if (r < 0) | |
193 | return log_error_errno(r, "Failed to attach bus to event loop: %m"); | |
194 | ||
7901cea1 MP |
195 | /* Did we get a timezone or transient hostname from DHCP while D-Bus wasn't up yet? */ |
196 | if (m->dynamic_hostname) { | |
197 | r = manager_set_hostname(m, m->dynamic_hostname); | |
198 | if (r < 0) | |
199 | return r; | |
200 | } | |
201 | if (m->dynamic_timezone) { | |
202 | r = manager_set_timezone(m, m->dynamic_timezone); | |
203 | if (r < 0) | |
204 | return r; | |
205 | } | |
206 | ||
9c0a72f9 TG |
207 | return 0; |
208 | } | |
209 | ||
5fae368b TG |
210 | static int manager_udev_process_link(Manager *m, struct udev_device *device) { |
211 | Link *link = NULL; | |
212 | int r, ifindex; | |
5544ee85 | 213 | |
5fae368b TG |
214 | assert(m); |
215 | assert(device); | |
5544ee85 | 216 | |
5fae368b TG |
217 | if (!streq_ptr(udev_device_get_action(device), "add")) |
218 | return 0; | |
5544ee85 | 219 | |
5fae368b TG |
220 | ifindex = udev_device_get_ifindex(device); |
221 | if (ifindex <= 0) { | |
2f3cf1f9 | 222 | log_debug("Ignoring udev ADD event for device with invalid ifindex"); |
5fae368b | 223 | return 0; |
5544ee85 TG |
224 | } |
225 | ||
5fae368b TG |
226 | r = link_get(m, ifindex, &link); |
227 | if (r == -ENODEV) | |
228 | return 0; | |
229 | else if (r < 0) | |
f579559b TG |
230 | return r; |
231 | ||
5fae368b | 232 | r = link_initialized(link, device); |
44de0efc LP |
233 | if (r < 0) |
234 | return r; | |
235 | ||
5fae368b TG |
236 | return 0; |
237 | } | |
be660c37 | 238 | |
5fae368b TG |
239 | static int manager_dispatch_link_udev(sd_event_source *source, int fd, uint32_t revents, void *userdata) { |
240 | Manager *m = userdata; | |
241 | struct udev_monitor *monitor = m->udev_monitor; | |
242 | _cleanup_udev_device_unref_ struct udev_device *device = NULL; | |
f579559b | 243 | |
5fae368b TG |
244 | device = udev_monitor_receive_device(monitor); |
245 | if (!device) | |
02b59d57 TG |
246 | return -ENOMEM; |
247 | ||
5fae368b | 248 | manager_udev_process_link(m, device); |
f579559b TG |
249 | return 0; |
250 | } | |
251 | ||
5fae368b TG |
252 | static int manager_connect_udev(Manager *m) { |
253 | int r; | |
f579559b | 254 | |
5fae368b TG |
255 | /* udev does not initialize devices inside containers, |
256 | * so we rely on them being already initialized before | |
257 | * entering the container */ | |
75f86906 | 258 | if (detect_container() > 0) |
5fae368b | 259 | return 0; |
f579559b | 260 | |
5fae368b TG |
261 | m->udev = udev_new(); |
262 | if (!m->udev) | |
263 | return -ENOMEM; | |
02b59d57 | 264 | |
5fae368b TG |
265 | m->udev_monitor = udev_monitor_new_from_netlink(m->udev, "udev"); |
266 | if (!m->udev_monitor) | |
267 | return -ENOMEM; | |
02b59d57 | 268 | |
5fae368b | 269 | r = udev_monitor_filter_add_match_subsystem_devtype(m->udev_monitor, "net", NULL); |
02b59d57 | 270 | if (r < 0) |
5fae368b | 271 | return log_error_errno(r, "Could not add udev monitor filter: %m"); |
02b59d57 | 272 | |
5fae368b TG |
273 | r = udev_monitor_enable_receiving(m->udev_monitor); |
274 | if (r < 0) { | |
275 | log_error("Could not enable udev monitor"); | |
02b59d57 | 276 | return r; |
667fcc6d | 277 | } |
505f8da7 | 278 | |
5fae368b TG |
279 | r = sd_event_add_io(m->event, |
280 | &m->udev_event_source, | |
281 | udev_monitor_get_fd(m->udev_monitor), | |
282 | EPOLLIN, manager_dispatch_link_udev, | |
283 | m); | |
284 | if (r < 0) | |
667fcc6d | 285 | return r; |
505f8da7 | 286 | |
5fae368b | 287 | r = sd_event_source_set_description(m->udev_event_source, "networkd-udev"); |
505f8da7 TG |
288 | if (r < 0) |
289 | return r; | |
11a7f229 | 290 | |
505f8da7 TG |
291 | return 0; |
292 | } | |
f579559b | 293 | |
1c8e710c TG |
294 | int manager_rtnl_process_route(sd_netlink *rtnl, sd_netlink_message *message, void *userdata) { |
295 | Manager *m = userdata; | |
296 | Link *link = NULL; | |
297 | uint16_t type; | |
298 | uint32_t ifindex, priority = 0; | |
983226f3 | 299 | unsigned char protocol, scope, tos, table, rt_type; |
1c8e710c TG |
300 | int family; |
301 | unsigned char dst_prefixlen, src_prefixlen; | |
302 | union in_addr_union dst = {}, gw = {}, src = {}, prefsrc = {}; | |
303 | Route *route = NULL; | |
304 | int r; | |
305 | ||
306 | assert(rtnl); | |
307 | assert(message); | |
308 | assert(m); | |
309 | ||
310 | if (sd_netlink_message_is_error(message)) { | |
311 | r = sd_netlink_message_get_errno(message); | |
312 | if (r < 0) | |
313 | log_warning_errno(r, "rtnl: failed to receive route: %m"); | |
314 | ||
315 | return 0; | |
316 | } | |
317 | ||
318 | r = sd_netlink_message_get_type(message, &type); | |
319 | if (r < 0) { | |
320 | log_warning_errno(r, "rtnl: could not get message type: %m"); | |
321 | return 0; | |
322 | } else if (type != RTM_NEWROUTE && type != RTM_DELROUTE) { | |
323 | log_warning("rtnl: received unexpected message type when processing route"); | |
324 | return 0; | |
325 | } | |
326 | ||
327 | r = sd_netlink_message_read_u32(message, RTA_OIF, &ifindex); | |
328 | if (r == -ENODATA) { | |
329 | log_debug("rtnl: received route without ifindex, ignoring"); | |
330 | return 0; | |
331 | } else if (r < 0) { | |
332 | log_warning_errno(r, "rtnl: could not get ifindex from route, ignoring: %m"); | |
333 | return 0; | |
334 | } else if (ifindex <= 0) { | |
335 | log_warning("rtnl: received route message with invalid ifindex, ignoring: %d", ifindex); | |
336 | return 0; | |
337 | } else { | |
338 | r = link_get(m, ifindex, &link); | |
339 | if (r < 0 || !link) { | |
340 | /* when enumerating we might be out of sync, but we will | |
341 | * get the route again, so just ignore it */ | |
342 | if (!m->enumerating) | |
343 | log_warning("rtnl: received route for nonexistent link (%d), ignoring", ifindex); | |
344 | return 0; | |
345 | } | |
346 | } | |
347 | ||
348 | r = sd_rtnl_message_route_get_family(message, &family); | |
349 | if (r < 0 || !IN_SET(family, AF_INET, AF_INET6)) { | |
350 | log_link_warning(link, "rtnl: received address with invalid family, ignoring."); | |
351 | return 0; | |
352 | } | |
353 | ||
354 | r = sd_rtnl_message_route_get_protocol(message, &protocol); | |
355 | if (r < 0) { | |
356 | log_warning_errno(r, "rtnl: could not get route protocol: %m"); | |
357 | return 0; | |
358 | } | |
359 | ||
360 | switch (family) { | |
361 | case AF_INET: | |
362 | r = sd_netlink_message_read_in_addr(message, RTA_DST, &dst.in); | |
363 | if (r < 0 && r != -ENODATA) { | |
364 | log_link_warning_errno(link, r, "rtnl: received route without valid destination, ignoring: %m"); | |
365 | return 0; | |
366 | } | |
367 | ||
368 | r = sd_netlink_message_read_in_addr(message, RTA_GATEWAY, &gw.in); | |
369 | if (r < 0 && r != -ENODATA) { | |
370 | log_link_warning_errno(link, r, "rtnl: received route with invalid gateway, ignoring: %m"); | |
371 | return 0; | |
372 | } | |
373 | ||
374 | r = sd_netlink_message_read_in_addr(message, RTA_SRC, &src.in); | |
375 | if (r < 0 && r != -ENODATA) { | |
376 | log_link_warning_errno(link, r, "rtnl: received route with invalid source, ignoring: %m"); | |
377 | return 0; | |
378 | } | |
379 | ||
380 | r = sd_netlink_message_read_in_addr(message, RTA_PREFSRC, &prefsrc.in); | |
381 | if (r < 0 && r != -ENODATA) { | |
382 | log_link_warning_errno(link, r, "rtnl: received route with invalid preferred source, ignoring: %m"); | |
383 | return 0; | |
384 | } | |
385 | ||
386 | break; | |
387 | ||
388 | case AF_INET6: | |
389 | r = sd_netlink_message_read_in6_addr(message, RTA_DST, &dst.in6); | |
390 | if (r < 0 && r != -ENODATA) { | |
391 | log_link_warning_errno(link, r, "rtnl: received route without valid destination, ignoring: %m"); | |
392 | return 0; | |
393 | } | |
394 | ||
395 | r = sd_netlink_message_read_in6_addr(message, RTA_GATEWAY, &gw.in6); | |
396 | if (r < 0 && r != -ENODATA) { | |
397 | log_link_warning_errno(link, r, "rtnl: received route with invalid gateway, ignoring: %m"); | |
398 | return 0; | |
399 | } | |
400 | ||
401 | r = sd_netlink_message_read_in6_addr(message, RTA_SRC, &src.in6); | |
402 | if (r < 0 && r != -ENODATA) { | |
403 | log_link_warning_errno(link, r, "rtnl: received route with invalid source, ignoring: %m"); | |
404 | return 0; | |
405 | } | |
406 | ||
407 | r = sd_netlink_message_read_in6_addr(message, RTA_PREFSRC, &prefsrc.in6); | |
408 | if (r < 0 && r != -ENODATA) { | |
409 | log_link_warning_errno(link, r, "rtnl: received route with invalid preferred source, ignoring: %m"); | |
410 | return 0; | |
411 | } | |
412 | ||
413 | break; | |
414 | ||
415 | default: | |
416 | log_link_debug(link, "rtnl: ignoring unsupported address family: %d", family); | |
417 | return 0; | |
418 | } | |
419 | ||
420 | r = sd_rtnl_message_route_get_dst_prefixlen(message, &dst_prefixlen); | |
421 | if (r < 0) { | |
422 | log_link_warning_errno(link, r, "rtnl: received route with invalid destination prefixlen, ignoring: %m"); | |
423 | return 0; | |
424 | } | |
425 | ||
426 | r = sd_rtnl_message_route_get_src_prefixlen(message, &src_prefixlen); | |
427 | if (r < 0) { | |
428 | log_link_warning_errno(link, r, "rtnl: received route with invalid source prefixlen, ignoring: %m"); | |
429 | return 0; | |
430 | } | |
431 | ||
432 | r = sd_rtnl_message_route_get_scope(message, &scope); | |
433 | if (r < 0) { | |
434 | log_link_warning_errno(link, r, "rtnl: received route with invalid scope, ignoring: %m"); | |
435 | return 0; | |
436 | } | |
437 | ||
438 | r = sd_rtnl_message_route_get_tos(message, &tos); | |
439 | if (r < 0) { | |
440 | log_link_warning_errno(link, r, "rtnl: received route with invalid tos, ignoring: %m"); | |
441 | return 0; | |
442 | } | |
443 | ||
983226f3 SS |
444 | r = sd_rtnl_message_route_get_type(message, &rt_type); |
445 | if (r < 0) { | |
446 | log_link_warning_errno(link, r, "rtnl: received route with invalid type, ignoring: %m"); | |
447 | return 0; | |
448 | } | |
449 | ||
1c8e710c TG |
450 | r = sd_rtnl_message_route_get_table(message, &table); |
451 | if (r < 0) { | |
452 | log_link_warning_errno(link, r, "rtnl: received route with invalid table, ignoring: %m"); | |
453 | return 0; | |
454 | } | |
455 | ||
456 | r = sd_netlink_message_read_u32(message, RTA_PRIORITY, &priority); | |
457 | if (r < 0 && r != -ENODATA) { | |
458 | log_link_warning_errno(link, r, "rtnl: received route with invalid priority, ignoring: %m"); | |
459 | return 0; | |
460 | } | |
461 | ||
462 | route_get(link, family, &dst, dst_prefixlen, tos, priority, table, &route); | |
463 | ||
464 | switch (type) { | |
465 | case RTM_NEWROUTE: | |
466 | if (!route) { | |
467 | /* A route appeared that we did not request */ | |
468 | r = route_add_foreign(link, family, &dst, dst_prefixlen, tos, priority, table, &route); | |
469 | if (r < 0) | |
470 | return 0; | |
471 | } | |
472 | ||
983226f3 | 473 | route_update(route, &src, src_prefixlen, &gw, &prefsrc, scope, rt_type, protocol); |
1c8e710c TG |
474 | |
475 | break; | |
476 | ||
477 | case RTM_DELROUTE: | |
b9642f41 | 478 | route_free(route); |
1c8e710c | 479 | break; |
b9642f41 | 480 | |
1c8e710c TG |
481 | default: |
482 | assert_not_reached("Received invalid RTNL message type"); | |
483 | } | |
484 | ||
485 | return 1; | |
486 | } | |
487 | ||
200a0868 TG |
488 | int manager_rtnl_process_address(sd_netlink *rtnl, sd_netlink_message *message, void *userdata) { |
489 | Manager *m = userdata; | |
490 | Link *link = NULL; | |
491 | uint16_t type; | |
200a0868 | 492 | unsigned char flags; |
054f0db4 TG |
493 | int family; |
494 | unsigned char prefixlen; | |
495 | unsigned char scope; | |
496 | union in_addr_union in_addr; | |
497 | struct ifa_cacheinfo cinfo; | |
498 | Address *address = NULL; | |
200a0868 TG |
499 | char buf[INET6_ADDRSTRLEN], valid_buf[FORMAT_TIMESPAN_MAX]; |
500 | const char *valid_str = NULL; | |
501 | int r, ifindex; | |
502 | ||
503 | assert(rtnl); | |
504 | assert(message); | |
505 | assert(m); | |
506 | ||
507 | if (sd_netlink_message_is_error(message)) { | |
508 | r = sd_netlink_message_get_errno(message); | |
509 | if (r < 0) | |
510 | log_warning_errno(r, "rtnl: failed to receive address: %m"); | |
511 | ||
512 | return 0; | |
513 | } | |
514 | ||
515 | r = sd_netlink_message_get_type(message, &type); | |
516 | if (r < 0) { | |
517 | log_warning_errno(r, "rtnl: could not get message type: %m"); | |
518 | return 0; | |
519 | } else if (type != RTM_NEWADDR && type != RTM_DELADDR) { | |
520 | log_warning("rtnl: received unexpected message type when processing address"); | |
521 | return 0; | |
522 | } | |
523 | ||
524 | r = sd_rtnl_message_addr_get_ifindex(message, &ifindex); | |
525 | if (r < 0) { | |
526 | log_warning_errno(r, "rtnl: could not get ifindex from address: %m"); | |
527 | return 0; | |
528 | } else if (ifindex <= 0) { | |
529 | log_warning("rtnl: received address message with invalid ifindex: %d", ifindex); | |
530 | return 0; | |
531 | } else { | |
532 | r = link_get(m, ifindex, &link); | |
533 | if (r < 0 || !link) { | |
534 | /* when enumerating we might be out of sync, but we will | |
535 | * get the address again, so just ignore it */ | |
536 | if (!m->enumerating) | |
537 | log_warning("rtnl: received address for nonexistent link (%d), ignoring", ifindex); | |
538 | return 0; | |
539 | } | |
540 | } | |
541 | ||
054f0db4 TG |
542 | r = sd_rtnl_message_addr_get_family(message, &family); |
543 | if (r < 0 || !IN_SET(family, AF_INET, AF_INET6)) { | |
200a0868 TG |
544 | log_link_warning(link, "rtnl: received address with invalid family, ignoring."); |
545 | return 0; | |
546 | } | |
547 | ||
054f0db4 | 548 | r = sd_rtnl_message_addr_get_prefixlen(message, &prefixlen); |
200a0868 TG |
549 | if (r < 0) { |
550 | log_link_warning_errno(link, r, "rtnl: received address with invalid prefixlen, ignoring: %m"); | |
551 | return 0; | |
552 | } | |
553 | ||
054f0db4 | 554 | r = sd_rtnl_message_addr_get_scope(message, &scope); |
200a0868 TG |
555 | if (r < 0) { |
556 | log_link_warning_errno(link, r, "rtnl: received address with invalid scope, ignoring: %m"); | |
557 | return 0; | |
558 | } | |
559 | ||
560 | r = sd_rtnl_message_addr_get_flags(message, &flags); | |
561 | if (r < 0) { | |
562 | log_link_warning_errno(link, r, "rtnl: received address with invalid flags, ignoring: %m"); | |
563 | return 0; | |
564 | } | |
200a0868 | 565 | |
054f0db4 | 566 | switch (family) { |
200a0868 | 567 | case AF_INET: |
054f0db4 | 568 | r = sd_netlink_message_read_in_addr(message, IFA_LOCAL, &in_addr.in); |
200a0868 TG |
569 | if (r < 0) { |
570 | log_link_warning_errno(link, r, "rtnl: received address without valid address, ignoring: %m"); | |
571 | return 0; | |
572 | } | |
573 | ||
574 | break; | |
575 | ||
576 | case AF_INET6: | |
054f0db4 | 577 | r = sd_netlink_message_read_in6_addr(message, IFA_ADDRESS, &in_addr.in6); |
200a0868 TG |
578 | if (r < 0) { |
579 | log_link_warning_errno(link, r, "rtnl: received address without valid address, ignoring: %m"); | |
580 | return 0; | |
581 | } | |
582 | ||
583 | break; | |
584 | ||
585 | default: | |
1c8e710c | 586 | log_link_debug(link, "rtnl: ignoring unsupported address family: %d", family); |
200a0868 TG |
587 | } |
588 | ||
054f0db4 | 589 | if (!inet_ntop(family, &in_addr, buf, INET6_ADDRSTRLEN)) { |
200a0868 TG |
590 | log_link_warning(link, "Could not print address"); |
591 | return 0; | |
592 | } | |
593 | ||
054f0db4 | 594 | r = sd_netlink_message_read_cache_info(message, IFA_CACHEINFO, &cinfo); |
200a0868 | 595 | if (r >= 0) { |
4058d339 | 596 | if (cinfo.ifa_valid != CACHE_INFO_INFINITY_LIFE_TIME) |
200a0868 | 597 | valid_str = format_timespan(valid_buf, FORMAT_TIMESPAN_MAX, |
054f0db4 | 598 | cinfo.ifa_valid * USEC_PER_SEC, |
200a0868 TG |
599 | USEC_PER_SEC); |
600 | } | |
601 | ||
054f0db4 | 602 | address_get(link, family, &in_addr, prefixlen, &address); |
200a0868 TG |
603 | |
604 | switch (type) { | |
605 | case RTM_NEWADDR: | |
36c32f61 | 606 | if (address) |
4058d339 TG |
607 | log_link_debug(link, "Updating address: %s/%u (valid %s%s)", buf, prefixlen, |
608 | valid_str ? "for " : "forever", valid_str ?: ""); | |
36c32f61 | 609 | else { |
adda1ed9 TG |
610 | /* An address appeared that we did not request */ |
611 | r = address_add_foreign(link, family, &in_addr, prefixlen, &address); | |
cf1d700d | 612 | if (r < 0) { |
054f0db4 | 613 | log_link_warning_errno(link, r, "Failed to add address %s/%u: %m", buf, prefixlen); |
cf1d700d TG |
614 | return 0; |
615 | } else | |
4058d339 TG |
616 | log_link_debug(link, "Adding address: %s/%u (valid %s%s)", buf, prefixlen, |
617 | valid_str ? "for " : "forever", valid_str ?: ""); | |
200a0868 TG |
618 | } |
619 | ||
58fda79c | 620 | address_update(address, flags, scope, &cinfo); |
36c32f61 | 621 | |
200a0868 TG |
622 | break; |
623 | ||
624 | case RTM_DELADDR: | |
625 | ||
054f0db4 | 626 | if (address) { |
4058d339 TG |
627 | log_link_debug(link, "Removing address: %s/%u (valid %s%s)", buf, prefixlen, |
628 | valid_str ? "for " : "forever", valid_str ?: ""); | |
91b5f997 | 629 | address_drop(address); |
200a0868 | 630 | } else |
4058d339 TG |
631 | log_link_warning(link, "Removing non-existent address: %s/%u (valid %s%s)", buf, prefixlen, |
632 | valid_str ? "for " : "forever", valid_str ?: ""); | |
200a0868 TG |
633 | |
634 | break; | |
635 | default: | |
636 | assert_not_reached("Received invalid RTNL message type"); | |
637 | } | |
638 | ||
639 | return 1; | |
640 | } | |
641 | ||
1c4baffc | 642 | static int manager_rtnl_process_link(sd_netlink *rtnl, sd_netlink_message *message, void *userdata) { |
505f8da7 TG |
643 | Manager *m = userdata; |
644 | Link *link = NULL; | |
4d473d5d | 645 | NetDev *netdev = NULL; |
f2236469 | 646 | uint16_t type; |
ca4e095a | 647 | const char *name; |
505f8da7 | 648 | int r, ifindex; |
f579559b | 649 | |
505f8da7 TG |
650 | assert(rtnl); |
651 | assert(message); | |
f579559b TG |
652 | assert(m); |
653 | ||
1c4baffc TG |
654 | if (sd_netlink_message_is_error(message)) { |
655 | r = sd_netlink_message_get_errno(message); | |
45af44d4 | 656 | if (r < 0) |
2f3cf1f9 | 657 | log_warning_errno(r, "rtnl: Could not receive link: %m"); |
45af44d4 TG |
658 | |
659 | return 0; | |
660 | } | |
661 | ||
1c4baffc | 662 | r = sd_netlink_message_get_type(message, &type); |
f2236469 | 663 | if (r < 0) { |
2f3cf1f9 | 664 | log_warning_errno(r, "rtnl: Could not get message type: %m"); |
f2236469 | 665 | return 0; |
cdfee943 | 666 | } else if (type != RTM_NEWLINK && type != RTM_DELLINK) { |
2f3cf1f9 | 667 | log_warning("rtnl: Received unexpected message type when processing link"); |
cdfee943 | 668 | return 0; |
f2236469 TG |
669 | } |
670 | ||
505f8da7 | 671 | r = sd_rtnl_message_link_get_ifindex(message, &ifindex); |
45af44d4 | 672 | if (r < 0) { |
2f3cf1f9 | 673 | log_warning_errno(r, "rtnl: Could not get ifindex from link: %m"); |
45af44d4 TG |
674 | return 0; |
675 | } else if (ifindex <= 0) { | |
676 | log_warning("rtnl: received link message with invalid ifindex: %d", ifindex); | |
505f8da7 | 677 | return 0; |
a0db8e46 | 678 | } |
f579559b | 679 | |
1c4baffc | 680 | r = sd_netlink_message_read_string(message, IFLA_IFNAME, &name); |
45af44d4 | 681 | if (r < 0) { |
2f3cf1f9 | 682 | log_warning_errno(r, "rtnl: Received link message without ifname: %m"); |
4d473d5d | 683 | return 0; |
a0db8e46 ZJS |
684 | } |
685 | ||
686 | (void) link_get(m, ifindex, &link); | |
687 | (void) netdev_get(m, name, &netdev); | |
4d473d5d TG |
688 | |
689 | switch (type) { | |
690 | case RTM_NEWLINK: | |
691 | if (!link) { | |
692 | /* link is new, so add it */ | |
693 | r = link_add(m, message, &link); | |
694 | if (r < 0) { | |
2f3cf1f9 | 695 | log_warning_errno(r, "Could not add new link: %m"); |
4d473d5d TG |
696 | return 0; |
697 | } | |
698 | } | |
699 | ||
700 | if (netdev) { | |
701 | /* netdev exists, so make sure the ifindex matches */ | |
505f8da7 TG |
702 | r = netdev_set_ifindex(netdev, message); |
703 | if (r < 0) { | |
2f3cf1f9 | 704 | log_warning_errno(r, "Could not set ifindex on netdev: %m"); |
505f8da7 TG |
705 | return 0; |
706 | } | |
707 | } | |
e1202047 | 708 | |
f2236469 TG |
709 | r = link_update(link, message); |
710 | if (r < 0) | |
711 | return 0; | |
4d473d5d TG |
712 | |
713 | break; | |
714 | ||
715 | case RTM_DELLINK: | |
716 | link_drop(link); | |
717 | netdev_drop(netdev); | |
718 | ||
719 | break; | |
720 | ||
721 | default: | |
722 | assert_not_reached("Received invalid RTNL message type."); | |
f2236469 | 723 | } |
505f8da7 TG |
724 | |
725 | return 1; | |
726 | } | |
727 | ||
bce67bbe SS |
728 | int manager_rtnl_process_rule(sd_netlink *rtnl, sd_netlink_message *message, void *userdata) { |
729 | uint8_t tos = 0, to_prefixlen = 0, from_prefixlen = 0; | |
730 | RoutingPolicyRule *rule = NULL; | |
731 | union in_addr_union to, from; | |
732 | uint32_t fwmark = 0, table = 0; | |
733 | Manager *m = userdata; | |
734 | uint16_t type; | |
735 | int family; | |
736 | int r; | |
737 | ||
738 | assert(rtnl); | |
739 | assert(message); | |
740 | assert(m); | |
741 | ||
742 | if (sd_netlink_message_is_error(message)) { | |
743 | r = sd_netlink_message_get_errno(message); | |
744 | if (r < 0) | |
745 | log_warning_errno(r, "rtnl: failed to receive rule: %m"); | |
746 | ||
747 | return 0; | |
748 | } | |
749 | ||
750 | r = sd_netlink_message_get_type(message, &type); | |
751 | if (r < 0) { | |
752 | log_warning_errno(r, "rtnl: could not get message type: %m"); | |
753 | return 0; | |
754 | } else if (!IN_SET(type, RTM_NEWRULE, RTM_DELRULE)) { | |
755 | log_warning("rtnl: received unexpected message type '%u' when processing rule.", type); | |
756 | return 0; | |
757 | } | |
758 | ||
759 | r = sd_rtnl_message_get_family(message, &family); | |
615ded62 YW |
760 | if (r < 0) { |
761 | log_warning_errno(r, "rtnl: could not get rule family: %m"); | |
762 | return 0; | |
763 | } else if (!IN_SET(family, AF_INET, AF_INET6)) { | |
764 | log_debug("rtnl: received address with invalid family %u, ignoring.", family); | |
bce67bbe SS |
765 | return 0; |
766 | } | |
767 | ||
768 | switch (family) { | |
769 | case AF_INET: | |
770 | r = sd_netlink_message_read_in_addr(message, FRA_SRC, &from.in); | |
771 | if (r >= 0) { | |
772 | r = sd_rtnl_message_routing_policy_rule_get_rtm_src_prefixlen(message, &from_prefixlen); | |
773 | if (r < 0) | |
774 | log_warning_errno(r, "rtnl: failed to retrive rule from prefix length: %m"); | |
775 | } | |
776 | ||
777 | r = sd_netlink_message_read_in_addr(message, FRA_DST, &to.in); | |
778 | if (r >= 0) { | |
779 | r = sd_rtnl_message_routing_policy_rule_get_rtm_dst_prefixlen(message, &to_prefixlen); | |
780 | if (r < 0) | |
781 | log_warning_errno(r, "rtnl: failed to retrive rule to prefix length: %m"); | |
782 | } | |
783 | ||
784 | break; | |
785 | ||
786 | case AF_INET6: | |
787 | r = sd_netlink_message_read_in6_addr(message, FRA_SRC, &from.in6); | |
788 | if (r >= 0) { | |
789 | r = sd_rtnl_message_routing_policy_rule_get_rtm_src_prefixlen(message, &from_prefixlen); | |
790 | if (r < 0) | |
791 | log_warning_errno(r, "rtnl: failed to retrive rule from prefix length: %m"); | |
792 | } | |
793 | ||
794 | r = sd_netlink_message_read_in6_addr(message, FRA_DST, &to.in6); | |
795 | if (r >= 0) { | |
796 | r = sd_rtnl_message_routing_policy_rule_get_rtm_dst_prefixlen(message, &to_prefixlen); | |
797 | if (r < 0) | |
798 | log_warning_errno(r, "rtnl: failed to retrive rule to prefix length: %m"); | |
799 | } | |
800 | ||
801 | break; | |
802 | ||
803 | default: | |
615ded62 | 804 | assert_not_reached("Received unsupported rule family"); |
bce67bbe SS |
805 | } |
806 | ||
807 | if (from_prefixlen == 0 && to_prefixlen == 0) | |
808 | return 0; | |
809 | ||
810 | (void) sd_netlink_message_read_u32(message, FRA_FWMARK, &fwmark); | |
811 | (void) sd_netlink_message_read_u32(message, FRA_TABLE, &table); | |
812 | (void) sd_rtnl_message_routing_policy_rule_get_tos(message, &tos); | |
813 | ||
814 | (void) routing_policy_rule_get(m, family, &from, from_prefixlen, &to, to_prefixlen, tos, fwmark, table, &rule); | |
815 | ||
816 | switch (type) { | |
817 | case RTM_NEWRULE: | |
818 | if(!rule) { | |
819 | r = routing_policy_rule_add_foreign(m, family, &from, from_prefixlen, &to, to_prefixlen, tos, fwmark, table, &rule); | |
820 | if (r < 0) { | |
821 | log_warning_errno(r, "Could not add rule: %m"); | |
822 | return 0; | |
823 | } | |
824 | } | |
825 | break; | |
826 | case RTM_DELRULE: | |
827 | routing_policy_rule_free(rule); | |
828 | ||
829 | break; | |
830 | ||
831 | default: | |
832 | assert_not_reached("Received invalid RTNL message type"); | |
833 | } | |
834 | ||
835 | return 1; | |
836 | } | |
837 | ||
5fae368b TG |
838 | static int systemd_netlink_fd(void) { |
839 | int n, fd, rtnl_fd = -EINVAL; | |
840 | ||
841 | n = sd_listen_fds(true); | |
842 | if (n <= 0) | |
843 | return -EINVAL; | |
844 | ||
845 | for (fd = SD_LISTEN_FDS_START; fd < SD_LISTEN_FDS_START + n; fd ++) { | |
846 | if (sd_is_socket(fd, AF_NETLINK, SOCK_RAW, -1) > 0) { | |
847 | if (rtnl_fd >= 0) | |
848 | return -EINVAL; | |
849 | ||
850 | rtnl_fd = fd; | |
851 | } | |
852 | } | |
853 | ||
854 | return rtnl_fd; | |
855 | } | |
856 | ||
857 | static int manager_connect_rtnl(Manager *m) { | |
858 | int fd, r; | |
505f8da7 TG |
859 | |
860 | assert(m); | |
505f8da7 | 861 | |
5fae368b TG |
862 | fd = systemd_netlink_fd(); |
863 | if (fd < 0) | |
1c4baffc | 864 | r = sd_netlink_open(&m->rtnl); |
5fae368b | 865 | else |
1c4baffc | 866 | r = sd_netlink_open_fd(&m->rtnl, fd); |
505f8da7 TG |
867 | if (r < 0) |
868 | return r; | |
869 | ||
1c4baffc | 870 | r = sd_netlink_inc_rcvbuf(m->rtnl, RCVBUF_SIZE); |
f579559b | 871 | if (r < 0) |
bf5332d2 | 872 | return r; |
f579559b | 873 | |
1c4baffc | 874 | r = sd_netlink_attach_event(m->rtnl, m->event, 0); |
505f8da7 TG |
875 | if (r < 0) |
876 | return r; | |
f579559b | 877 | |
1c4baffc | 878 | r = sd_netlink_add_match(m->rtnl, RTM_NEWLINK, &manager_rtnl_process_link, m); |
5fae368b TG |
879 | if (r < 0) |
880 | return r; | |
505f8da7 | 881 | |
1c4baffc | 882 | r = sd_netlink_add_match(m->rtnl, RTM_DELLINK, &manager_rtnl_process_link, m); |
5fae368b TG |
883 | if (r < 0) |
884 | return r; | |
45af44d4 | 885 | |
200a0868 | 886 | r = sd_netlink_add_match(m->rtnl, RTM_NEWADDR, &manager_rtnl_process_address, m); |
5fae368b TG |
887 | if (r < 0) |
888 | return r; | |
889 | ||
200a0868 | 890 | r = sd_netlink_add_match(m->rtnl, RTM_DELADDR, &manager_rtnl_process_address, m); |
5fae368b TG |
891 | if (r < 0) |
892 | return r; | |
893 | ||
1c8e710c TG |
894 | r = sd_netlink_add_match(m->rtnl, RTM_NEWROUTE, &manager_rtnl_process_route, m); |
895 | if (r < 0) | |
896 | return r; | |
897 | ||
898 | r = sd_netlink_add_match(m->rtnl, RTM_DELROUTE, &manager_rtnl_process_route, m); | |
899 | if (r < 0) | |
900 | return r; | |
901 | ||
bce67bbe SS |
902 | r = sd_netlink_add_match(m->rtnl, RTM_NEWRULE, &manager_rtnl_process_rule, m); |
903 | if (r < 0) | |
904 | return r; | |
905 | ||
906 | r = sd_netlink_add_match(m->rtnl, RTM_DELRULE, &manager_rtnl_process_rule, m); | |
907 | if (r < 0) | |
908 | return r; | |
909 | ||
5fae368b | 910 | return 0; |
45af44d4 | 911 | } |
505f8da7 | 912 | |
5512a963 | 913 | static int ordered_set_put_in_addr_data(OrderedSet *s, const struct in_addr_data *address) { |
84de38c5 TG |
914 | char *p; |
915 | int r; | |
916 | ||
917 | assert(s); | |
5512a963 LP |
918 | assert(address); |
919 | ||
920 | r = in_addr_to_string(address->family, &address->address, &p); | |
921 | if (r < 0) | |
922 | return r; | |
923 | ||
924 | r = ordered_set_consume(s, p); | |
925 | if (r == -EEXIST) | |
926 | return 0; | |
927 | ||
928 | return r; | |
929 | } | |
930 | ||
931 | static int ordered_set_put_in_addr_datav(OrderedSet *s, const struct in_addr_data *addresses, unsigned n) { | |
932 | int r, c = 0; | |
933 | unsigned i; | |
934 | ||
935 | assert(s); | |
936 | assert(addresses || n == 0); | |
937 | ||
938 | for (i = 0; i < n; i++) { | |
939 | r = ordered_set_put_in_addr_data(s, addresses+i); | |
940 | if (r < 0) | |
941 | return r; | |
942 | ||
943 | c += r; | |
944 | } | |
945 | ||
946 | return c; | |
947 | } | |
948 | ||
949 | static int ordered_set_put_in4_addr(OrderedSet *s, const struct in_addr *address) { | |
950 | char *p; | |
951 | int r; | |
952 | ||
953 | assert(s); | |
954 | assert(address); | |
84de38c5 TG |
955 | |
956 | r = in_addr_to_string(AF_INET, (const union in_addr_union*) address, &p); | |
957 | if (r < 0) | |
958 | return r; | |
959 | ||
00616955 | 960 | r = ordered_set_consume(s, p); |
84de38c5 TG |
961 | if (r == -EEXIST) |
962 | return 0; | |
963 | ||
964 | return r; | |
965 | } | |
966 | ||
5512a963 LP |
967 | static int ordered_set_put_in4_addrv(OrderedSet *s, const struct in_addr *addresses, unsigned n) { |
968 | int r, c = 0; | |
969 | unsigned i; | |
84de38c5 TG |
970 | |
971 | assert(s); | |
5512a963 | 972 | assert(n == 0 || addresses); |
84de38c5 TG |
973 | |
974 | for (i = 0; i < n; i++) { | |
5512a963 | 975 | r = ordered_set_put_in4_addr(s, addresses+i); |
84de38c5 TG |
976 | if (r < 0) |
977 | return r; | |
978 | ||
979 | c += r; | |
980 | } | |
981 | ||
982 | return c; | |
983 | } | |
984 | ||
00616955 | 985 | static void print_string_set(FILE *f, const char *field, OrderedSet *s) { |
84de38c5 TG |
986 | bool space = false; |
987 | Iterator i; | |
988 | char *p; | |
989 | ||
00616955 | 990 | if (ordered_set_isempty(s)) |
84de38c5 TG |
991 | return; |
992 | ||
4b61c875 | 993 | fputs_unlocked(field, f); |
84de38c5 | 994 | |
d390f8ef LP |
995 | ORDERED_SET_FOREACH(p, s, i) |
996 | fputs_with_space(f, p, NULL, &space); | |
997 | ||
4b61c875 | 998 | fputc_unlocked('\n', f); |
84de38c5 TG |
999 | } |
1000 | ||
1001 | static int manager_save(Manager *m) { | |
00616955 | 1002 | _cleanup_ordered_set_free_free_ OrderedSet *dns = NULL, *ntp = NULL, *search_domains = NULL, *route_domains = NULL; |
bce67bbe SS |
1003 | RoutingPolicyRule *rule = NULL; |
1004 | bool space = false; | |
84de38c5 TG |
1005 | Link *link; |
1006 | Iterator i; | |
1007 | _cleanup_free_ char *temp_path = NULL; | |
1008 | _cleanup_fclose_ FILE *f = NULL; | |
1009 | LinkOperationalState operstate = LINK_OPERSTATE_OFF; | |
1010 | const char *operstate_str; | |
1011 | int r; | |
1012 | ||
1013 | assert(m); | |
1014 | assert(m->state_file); | |
1015 | ||
1016 | /* We add all NTP and DNS server to a set, to filter out duplicates */ | |
00616955 | 1017 | dns = ordered_set_new(&string_hash_ops); |
84de38c5 TG |
1018 | if (!dns) |
1019 | return -ENOMEM; | |
1020 | ||
00616955 | 1021 | ntp = ordered_set_new(&string_hash_ops); |
84de38c5 TG |
1022 | if (!ntp) |
1023 | return -ENOMEM; | |
1024 | ||
482d1aeb | 1025 | search_domains = ordered_set_new(&dns_name_hash_ops); |
3df9bec5 LP |
1026 | if (!search_domains) |
1027 | return -ENOMEM; | |
1028 | ||
482d1aeb | 1029 | route_domains = ordered_set_new(&dns_name_hash_ops); |
3df9bec5 | 1030 | if (!route_domains) |
84de38c5 TG |
1031 | return -ENOMEM; |
1032 | ||
1033 | HASHMAP_FOREACH(link, m->links, i) { | |
1034 | if (link->flags & IFF_LOOPBACK) | |
1035 | continue; | |
1036 | ||
1037 | if (link->operstate > operstate) | |
1038 | operstate = link->operstate; | |
1039 | ||
1040 | if (!link->network) | |
1041 | continue; | |
1042 | ||
1043 | /* First add the static configured entries */ | |
5512a963 | 1044 | r = ordered_set_put_in_addr_datav(dns, link->network->dns, link->network->n_dns); |
84de38c5 TG |
1045 | if (r < 0) |
1046 | return r; | |
1047 | ||
00616955 | 1048 | r = ordered_set_put_strdupv(ntp, link->network->ntp); |
84de38c5 TG |
1049 | if (r < 0) |
1050 | return r; | |
1051 | ||
00616955 | 1052 | r = ordered_set_put_strdupv(search_domains, link->network->search_domains); |
3df9bec5 LP |
1053 | if (r < 0) |
1054 | return r; | |
1055 | ||
00616955 | 1056 | r = ordered_set_put_strdupv(route_domains, link->network->route_domains); |
84de38c5 TG |
1057 | if (r < 0) |
1058 | return r; | |
1059 | ||
1060 | if (!link->dhcp_lease) | |
1061 | continue; | |
1062 | ||
1063 | /* Secondly, add the entries acquired via DHCP */ | |
27cb34f5 | 1064 | if (link->network->dhcp_use_dns) { |
84de38c5 TG |
1065 | const struct in_addr *addresses; |
1066 | ||
1067 | r = sd_dhcp_lease_get_dns(link->dhcp_lease, &addresses); | |
1068 | if (r > 0) { | |
5512a963 | 1069 | r = ordered_set_put_in4_addrv(dns, addresses, r); |
84de38c5 TG |
1070 | if (r < 0) |
1071 | return r; | |
1072 | } else if (r < 0 && r != -ENODATA) | |
1073 | return r; | |
1074 | } | |
1075 | ||
27cb34f5 | 1076 | if (link->network->dhcp_use_ntp) { |
84de38c5 TG |
1077 | const struct in_addr *addresses; |
1078 | ||
1079 | r = sd_dhcp_lease_get_ntp(link->dhcp_lease, &addresses); | |
1080 | if (r > 0) { | |
5512a963 | 1081 | r = ordered_set_put_in4_addrv(ntp, addresses, r); |
84de38c5 TG |
1082 | if (r < 0) |
1083 | return r; | |
1084 | } else if (r < 0 && r != -ENODATA) | |
1085 | return r; | |
1086 | } | |
1087 | ||
b2a81c0b | 1088 | if (link->network->dhcp_use_domains != DHCP_USE_DOMAINS_NO) { |
84de38c5 | 1089 | const char *domainname; |
b85bc551 | 1090 | char **domains = NULL; |
84de38c5 | 1091 | |
b85bc551 | 1092 | OrderedSet *target_domains = (link->network->dhcp_use_domains == DHCP_USE_DOMAINS_YES) ? search_domains : route_domains; |
84de38c5 TG |
1093 | r = sd_dhcp_lease_get_domainname(link->dhcp_lease, &domainname); |
1094 | if (r >= 0) { | |
b85bc551 DW |
1095 | r = ordered_set_put_strdup(target_domains, domainname); |
1096 | if (r < 0) | |
1097 | return r; | |
1098 | } else if (r != -ENODATA) | |
1099 | return r; | |
b2a81c0b | 1100 | |
b85bc551 DW |
1101 | r = sd_dhcp_lease_get_search_domains(link->dhcp_lease, &domains); |
1102 | if (r >= 0) { | |
1103 | r = ordered_set_put_strdupv(target_domains, domains); | |
84de38c5 TG |
1104 | if (r < 0) |
1105 | return r; | |
1106 | } else if (r != -ENODATA) | |
1107 | return r; | |
1108 | } | |
1109 | } | |
1110 | ||
1111 | operstate_str = link_operstate_to_string(operstate); | |
1112 | assert(operstate_str); | |
1113 | ||
1114 | r = fopen_temporary(m->state_file, &f, &temp_path); | |
1115 | if (r < 0) | |
1116 | return r; | |
1117 | ||
5512a963 | 1118 | (void) fchmod(fileno(f), 0644); |
84de38c5 TG |
1119 | |
1120 | fprintf(f, | |
1121 | "# This is private data. Do not parse.\n" | |
1122 | "OPER_STATE=%s\n", operstate_str); | |
1123 | ||
1124 | print_string_set(f, "DNS=", dns); | |
1125 | print_string_set(f, "NTP=", ntp); | |
3df9bec5 LP |
1126 | print_string_set(f, "DOMAINS=", search_domains); |
1127 | print_string_set(f, "ROUTE_DOMAINS=", route_domains); | |
84de38c5 | 1128 | |
bce67bbe SS |
1129 | SET_FOREACH(rule, m->rules, i) { |
1130 | _cleanup_free_ char *from_str = NULL, *to_str = NULL; | |
1131 | fputs("RULE=", f); | |
1132 | ||
1133 | if (!in_addr_is_null(rule->family, &rule->from)) { | |
1134 | r = in_addr_to_string(rule->family, &rule->from, &from_str); | |
1135 | if (r < 0) | |
1136 | goto fail; | |
1137 | } | |
1138 | ||
1139 | if (!in_addr_is_null(rule->family, &rule->to)) { | |
1140 | r = in_addr_to_string(rule->family, &rule->to, &to_str); | |
1141 | if (r < 0) | |
1142 | goto fail; | |
1143 | } | |
1144 | ||
1145 | fprintf(f, "from=%s%s/%hhu to=%s%s/%hhu tos=%hhu fwmark=%"PRIu32"/%"PRIu32" table=%hhu", space ? " " : "", from_str, | |
1146 | rule->from_prefixlen, space ? " " : "", to_str, rule->to_prefixlen, rule->tos, rule->fwmark, rule->fwmask, rule->table); | |
1147 | ||
1148 | fputc('\n', f); | |
1149 | } | |
1150 | ||
84de38c5 TG |
1151 | r = fflush_and_check(f); |
1152 | if (r < 0) | |
1153 | goto fail; | |
1154 | ||
1155 | if (rename(temp_path, m->state_file) < 0) { | |
1156 | r = -errno; | |
1157 | goto fail; | |
1158 | } | |
1159 | ||
1160 | if (m->operational_state != operstate) { | |
1161 | m->operational_state = operstate; | |
1162 | r = manager_send_changed(m, "OperationalState", NULL); | |
1163 | if (r < 0) | |
1164 | log_error_errno(r, "Could not emit changed OperationalState: %m"); | |
1165 | } | |
1166 | ||
1167 | m->dirty = false; | |
1168 | ||
1169 | return 0; | |
1170 | ||
1171 | fail: | |
1172 | (void) unlink(m->state_file); | |
1173 | (void) unlink(temp_path); | |
1174 | ||
1175 | return log_error_errno(r, "Failed to save network state to %s: %m", m->state_file); | |
1176 | } | |
1177 | ||
1178 | static int manager_dirty_handler(sd_event_source *s, void *userdata) { | |
1179 | Manager *m = userdata; | |
1180 | Link *link; | |
1181 | Iterator i; | |
1182 | int r; | |
1183 | ||
1184 | assert(m); | |
1185 | ||
1186 | if (m->dirty) | |
1187 | manager_save(m); | |
1188 | ||
1189 | SET_FOREACH(link, m->dirty_links, i) { | |
1190 | r = link_save(link); | |
1191 | if (r >= 0) | |
1192 | link_clean(link); | |
1193 | } | |
1194 | ||
1195 | return 1; | |
1196 | } | |
1197 | ||
b76d99d9 | 1198 | int manager_new(Manager **ret, sd_event *event) { |
5fae368b | 1199 | _cleanup_manager_free_ Manager *m = NULL; |
45af44d4 | 1200 | int r; |
f579559b | 1201 | |
5fae368b TG |
1202 | m = new0(Manager, 1); |
1203 | if (!m) | |
1204 | return -ENOMEM; | |
45af44d4 | 1205 | |
5fae368b TG |
1206 | m->state_file = strdup("/run/systemd/netif/state"); |
1207 | if (!m->state_file) | |
1208 | return -ENOMEM; | |
1209 | ||
b76d99d9 | 1210 | m->event = sd_event_ref(event); |
5fae368b | 1211 | |
84de38c5 TG |
1212 | r = sd_event_add_post(m->event, NULL, manager_dirty_handler, m); |
1213 | if (r < 0) | |
1214 | return r; | |
1215 | ||
5fae368b | 1216 | r = manager_connect_rtnl(m); |
45af44d4 TG |
1217 | if (r < 0) |
1218 | return r; | |
1219 | ||
5fae368b TG |
1220 | r = manager_connect_udev(m); |
1221 | if (r < 0) | |
1222 | return r; | |
45af44d4 | 1223 | |
5fae368b TG |
1224 | m->netdevs = hashmap_new(&string_hash_ops); |
1225 | if (!m->netdevs) | |
1226 | return -ENOMEM; | |
f579559b | 1227 | |
5fae368b | 1228 | LIST_HEAD_INIT(m->networks); |
f579559b | 1229 | |
5fae368b TG |
1230 | r = setup_default_address_pool(m); |
1231 | if (r < 0) | |
1232 | return r; | |
f579559b | 1233 | |
8341a5c3 | 1234 | m->duid.type = DUID_TYPE_EN; |
413708d1 | 1235 | |
bce67bbe SS |
1236 | (void) routing_policy_rule_load(m); |
1237 | ||
5fae368b TG |
1238 | *ret = m; |
1239 | m = NULL; | |
f579559b | 1240 | |
f579559b TG |
1241 | return 0; |
1242 | } | |
1243 | ||
5fae368b | 1244 | void manager_free(Manager *m) { |
bce67bbe | 1245 | RoutingPolicyRule *rule; |
5fae368b TG |
1246 | Network *network; |
1247 | NetDev *netdev; | |
1248 | Link *link; | |
1249 | AddressPool *pool; | |
f579559b | 1250 | |
5fae368b TG |
1251 | if (!m) |
1252 | return; | |
505f8da7 | 1253 | |
5fae368b | 1254 | free(m->state_file); |
505f8da7 | 1255 | |
bce67bbe SS |
1256 | while ((network = m->networks)) |
1257 | network_free(network); | |
1258 | ||
5fae368b TG |
1259 | while ((link = hashmap_first(m->links))) |
1260 | link_unref(link); | |
1261 | hashmap_free(m->links); | |
f579559b | 1262 | |
dbffab87 TG |
1263 | hashmap_free(m->networks_by_name); |
1264 | ||
5fae368b TG |
1265 | while ((netdev = hashmap_first(m->netdevs))) |
1266 | netdev_unref(netdev); | |
1267 | hashmap_free(m->netdevs); | |
1268 | ||
1269 | while ((pool = m->address_pools)) | |
1270 | address_pool_free(pool); | |
1271 | ||
bce67bbe SS |
1272 | set_free(m->rules); |
1273 | set_free(m->rules_foreign); | |
1274 | ||
1275 | while ((rule = set_steal_first(m->rules_saved))) | |
1276 | free(rule); | |
1277 | ||
1278 | set_free(m->rules_saved); | |
1279 | ||
1c4baffc | 1280 | sd_netlink_unref(m->rtnl); |
2f5b4a77 | 1281 | sd_event_unref(m->event); |
5fae368b | 1282 | |
7d20d375 TG |
1283 | sd_event_source_unref(m->udev_event_source); |
1284 | udev_monitor_unref(m->udev_monitor); | |
1285 | udev_unref(m->udev); | |
1286 | ||
1287 | sd_bus_unref(m->bus); | |
1288 | sd_bus_slot_unref(m->prepare_for_sleep_slot); | |
1289 | sd_event_source_unref(m->bus_retry_event_source); | |
1290 | ||
7901cea1 MP |
1291 | free(m->dynamic_timezone); |
1292 | free(m->dynamic_hostname); | |
1293 | ||
5fae368b TG |
1294 | free(m); |
1295 | } | |
1296 | ||
b76d99d9 | 1297 | int manager_start(Manager *m) { |
84de38c5 TG |
1298 | Link *link; |
1299 | Iterator i; | |
1300 | ||
a97dcc12 TG |
1301 | assert(m); |
1302 | ||
84de38c5 TG |
1303 | /* The dirty handler will deal with future serialization, but the first one |
1304 | must be done explicitly. */ | |
1305 | ||
1306 | manager_save(m); | |
1307 | ||
1308 | HASHMAP_FOREACH(link, m->links, i) | |
1309 | link_save(link); | |
1310 | ||
b76d99d9 | 1311 | return 0; |
a97dcc12 TG |
1312 | } |
1313 | ||
5fae368b TG |
1314 | int manager_load_config(Manager *m) { |
1315 | int r; | |
1316 | ||
1317 | /* update timestamp */ | |
1318 | paths_check_timestamp(network_dirs, &m->network_dirs_ts_usec, true); | |
1319 | ||
1320 | r = netdev_load(m); | |
f579559b TG |
1321 | if (r < 0) |
1322 | return r; | |
1323 | ||
5fae368b | 1324 | r = network_load(m); |
9021bb9f TG |
1325 | if (r < 0) |
1326 | return r; | |
1327 | ||
f579559b TG |
1328 | return 0; |
1329 | } | |
f882c247 | 1330 | |
5fae368b TG |
1331 | bool manager_should_reload(Manager *m) { |
1332 | return paths_check_timestamp(network_dirs, &m->network_dirs_ts_usec, false); | |
1333 | } | |
1334 | ||
1335 | int manager_rtnl_enumerate_links(Manager *m) { | |
4afd3348 | 1336 | _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL, *reply = NULL; |
1c4baffc | 1337 | sd_netlink_message *link; |
f882c247 TG |
1338 | int r; |
1339 | ||
5da8149f | 1340 | assert(m); |
5fae368b | 1341 | assert(m->rtnl); |
5da8149f | 1342 | |
5fae368b | 1343 | r = sd_rtnl_message_new_link(m->rtnl, &req, RTM_GETLINK, 0); |
f882c247 TG |
1344 | if (r < 0) |
1345 | return r; | |
1346 | ||
1c4baffc | 1347 | r = sd_netlink_message_request_dump(req, true); |
dd3efc09 TG |
1348 | if (r < 0) |
1349 | return r; | |
1350 | ||
1c4baffc | 1351 | r = sd_netlink_call(m->rtnl, req, 0, &reply); |
f2236469 TG |
1352 | if (r < 0) |
1353 | return r; | |
1354 | ||
1c4baffc | 1355 | for (link = reply; link; link = sd_netlink_message_next(link)) { |
5fae368b | 1356 | int k; |
2e9f08ea | 1357 | |
6a24f148 TG |
1358 | m->enumerating = true; |
1359 | ||
5fae368b TG |
1360 | k = manager_rtnl_process_link(m->rtnl, link, m); |
1361 | if (k < 0) | |
1362 | r = k; | |
6a24f148 TG |
1363 | |
1364 | m->enumerating = false; | |
5fae368b | 1365 | } |
2e9f08ea | 1366 | |
5fae368b | 1367 | return r; |
f882c247 | 1368 | } |
3bef724f | 1369 | |
5fae368b | 1370 | int manager_rtnl_enumerate_addresses(Manager *m) { |
4afd3348 | 1371 | _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL, *reply = NULL; |
1c4baffc | 1372 | sd_netlink_message *addr; |
1346b1f0 TG |
1373 | int r; |
1374 | ||
5fae368b TG |
1375 | assert(m); |
1376 | assert(m->rtnl); | |
bcbca829 | 1377 | |
5fae368b TG |
1378 | r = sd_rtnl_message_new_addr(m->rtnl, &req, RTM_GETADDR, 0, 0); |
1379 | if (r < 0) | |
1380 | return r; | |
bcbca829 | 1381 | |
1c4baffc | 1382 | r = sd_netlink_message_request_dump(req, true); |
1346b1f0 TG |
1383 | if (r < 0) |
1384 | return r; | |
1385 | ||
1c4baffc | 1386 | r = sd_netlink_call(m->rtnl, req, 0, &reply); |
5fae368b TG |
1387 | if (r < 0) |
1388 | return r; | |
1389 | ||
1c4baffc | 1390 | for (addr = reply; addr; addr = sd_netlink_message_next(addr)) { |
5fae368b TG |
1391 | int k; |
1392 | ||
6a24f148 TG |
1393 | m->enumerating = true; |
1394 | ||
200a0868 | 1395 | k = manager_rtnl_process_address(m->rtnl, addr, m); |
5fae368b TG |
1396 | if (k < 0) |
1397 | r = k; | |
6a24f148 TG |
1398 | |
1399 | m->enumerating = false; | |
5fae368b TG |
1400 | } |
1401 | ||
1402 | return r; | |
1346b1f0 TG |
1403 | } |
1404 | ||
1c8e710c | 1405 | int manager_rtnl_enumerate_routes(Manager *m) { |
4afd3348 | 1406 | _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL, *reply = NULL; |
1c8e710c TG |
1407 | sd_netlink_message *route; |
1408 | int r; | |
1409 | ||
1410 | assert(m); | |
1411 | assert(m->rtnl); | |
1412 | ||
1413 | r = sd_rtnl_message_new_route(m->rtnl, &req, RTM_GETROUTE, 0, 0); | |
1414 | if (r < 0) | |
1415 | return r; | |
1416 | ||
1417 | r = sd_netlink_message_request_dump(req, true); | |
1418 | if (r < 0) | |
1419 | return r; | |
1420 | ||
1421 | r = sd_netlink_call(m->rtnl, req, 0, &reply); | |
1422 | if (r < 0) | |
1423 | return r; | |
1424 | ||
1425 | for (route = reply; route; route = sd_netlink_message_next(route)) { | |
1426 | int k; | |
1427 | ||
1428 | m->enumerating = true; | |
1429 | ||
1430 | k = manager_rtnl_process_route(m->rtnl, route, m); | |
1431 | if (k < 0) | |
1432 | r = k; | |
1433 | ||
1434 | m->enumerating = false; | |
1435 | } | |
1436 | ||
1437 | return r; | |
1438 | } | |
1439 | ||
bce67bbe SS |
1440 | int manager_rtnl_enumerate_rules(Manager *m) { |
1441 | _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL, *reply = NULL; | |
1442 | sd_netlink_message *rule; | |
1443 | int r; | |
1444 | ||
1445 | assert(m); | |
1446 | assert(m->rtnl); | |
1447 | ||
1448 | r = sd_rtnl_message_new_routing_policy_rule(m->rtnl, &req, RTM_GETRULE, 0); | |
1449 | if (r < 0) | |
1450 | return r; | |
1451 | ||
1452 | r = sd_netlink_message_request_dump(req, true); | |
1453 | if (r < 0) | |
1454 | return r; | |
1455 | ||
1456 | r = sd_netlink_call(m->rtnl, req, 0, &reply); | |
1457 | if (r < 0) | |
1458 | return r; | |
1459 | ||
1460 | for (rule = reply; rule; rule = sd_netlink_message_next(rule)) { | |
1461 | int k; | |
1462 | ||
1463 | m->enumerating = true; | |
1464 | ||
1465 | k = manager_rtnl_process_rule(m->rtnl, rule, m); | |
1466 | if (k < 0) | |
1467 | r = k; | |
1468 | ||
1469 | m->enumerating = false; | |
1470 | } | |
1471 | ||
1472 | return r; | |
1473 | } | |
1474 | ||
0dd25fb9 | 1475 | int manager_address_pool_acquire(Manager *m, int family, unsigned prefixlen, union in_addr_union *found) { |
11bf3cce LP |
1476 | AddressPool *p; |
1477 | int r; | |
1478 | ||
1479 | assert(m); | |
1480 | assert(prefixlen > 0); | |
1481 | assert(found); | |
1482 | ||
1483 | LIST_FOREACH(address_pools, p, m->address_pools) { | |
1484 | if (p->family != family) | |
1485 | continue; | |
1486 | ||
1487 | r = address_pool_acquire(p, prefixlen, found); | |
1488 | if (r != 0) | |
1489 | return r; | |
1490 | } | |
1491 | ||
1492 | return 0; | |
1493 | } | |
4f5f911e LP |
1494 | |
1495 | Link* manager_find_uplink(Manager *m, Link *exclude) { | |
1496 | _cleanup_free_ struct local_address *gateways = NULL; | |
1497 | int n, i; | |
1498 | ||
1499 | assert(m); | |
1500 | ||
1501 | /* Looks for a suitable "uplink", via black magic: an | |
1502 | * interface that is up and where the default route with the | |
1503 | * highest priority points to. */ | |
1504 | ||
1505 | n = local_gateways(m->rtnl, 0, AF_UNSPEC, &gateways); | |
1506 | if (n < 0) { | |
1507 | log_warning_errno(n, "Failed to determine list of default gateways: %m"); | |
1508 | return NULL; | |
1509 | } | |
1510 | ||
1511 | for (i = 0; i < n; i++) { | |
1512 | Link *link; | |
1513 | ||
1514 | link = hashmap_get(m->links, INT_TO_PTR(gateways[i].ifindex)); | |
1515 | if (!link) { | |
c2c940bd | 1516 | log_debug("Weird, found a gateway for a link we don't know. Ignoring."); |
4f5f911e LP |
1517 | continue; |
1518 | } | |
1519 | ||
1520 | if (link == exclude) | |
1521 | continue; | |
1522 | ||
1523 | if (link->operstate < LINK_OPERSTATE_ROUTABLE) | |
1524 | continue; | |
1525 | ||
1526 | return link; | |
1527 | } | |
1528 | ||
1529 | return NULL; | |
1530 | } | |
84de38c5 TG |
1531 | |
1532 | void manager_dirty(Manager *manager) { | |
1533 | assert(manager); | |
1534 | ||
1535 | /* the serialized state in /run is no longer up-to-date */ | |
1536 | manager->dirty = true; | |
1537 | } | |
59eb33e0 MP |
1538 | |
1539 | static int set_hostname_handler(sd_bus_message *m, void *userdata, sd_bus_error *ret_error) { | |
1540 | Manager *manager = userdata; | |
1541 | const sd_bus_error *e; | |
1542 | ||
1543 | assert(m); | |
1544 | assert(manager); | |
1545 | ||
1546 | e = sd_bus_message_get_error(m); | |
1547 | if (e) | |
1548 | log_warning_errno(sd_bus_error_get_errno(e), "Could not set hostname: %s", e->message); | |
1549 | ||
1550 | return 1; | |
1551 | } | |
1552 | ||
1553 | int manager_set_hostname(Manager *m, const char *hostname) { | |
1554 | int r; | |
1555 | ||
1556 | log_debug("Setting transient hostname: '%s'", strna(hostname)); | |
7901cea1 MP |
1557 | if (free_and_strdup(&m->dynamic_hostname, hostname) < 0) |
1558 | return log_oom(); | |
59eb33e0 MP |
1559 | |
1560 | if (!m->bus) { | |
1561 | /* TODO: replace by assert when we can rely on kdbus */ | |
1562 | log_info("Not connected to system bus, ignoring transient hostname."); | |
1563 | return 0; | |
1564 | } | |
1565 | ||
1566 | r = sd_bus_call_method_async( | |
1567 | m->bus, | |
1568 | NULL, | |
1569 | "org.freedesktop.hostname1", | |
1570 | "/org/freedesktop/hostname1", | |
1571 | "org.freedesktop.hostname1", | |
1572 | "SetHostname", | |
1573 | set_hostname_handler, | |
1574 | m, | |
1575 | "sb", | |
1576 | hostname, | |
1577 | false); | |
1578 | ||
1579 | if (r < 0) | |
1580 | return log_error_errno(r, "Could not set transient hostname: %m"); | |
1581 | ||
1582 | return 0; | |
1583 | } | |
1584 | ||
1585 | static int set_timezone_handler(sd_bus_message *m, void *userdata, sd_bus_error *ret_error) { | |
1586 | Manager *manager = userdata; | |
1587 | const sd_bus_error *e; | |
1588 | ||
1589 | assert(m); | |
1590 | assert(manager); | |
1591 | ||
1592 | e = sd_bus_message_get_error(m); | |
1593 | if (e) | |
1594 | log_warning_errno(sd_bus_error_get_errno(e), "Could not set timezone: %s", e->message); | |
1595 | ||
1596 | return 1; | |
1597 | } | |
1598 | ||
1599 | int manager_set_timezone(Manager *m, const char *tz) { | |
1600 | int r; | |
1601 | ||
1602 | assert(m); | |
1603 | assert(tz); | |
1604 | ||
1605 | log_debug("Setting system timezone: '%s'", tz); | |
7901cea1 MP |
1606 | if (free_and_strdup(&m->dynamic_timezone, tz) < 0) |
1607 | return log_oom(); | |
59eb33e0 MP |
1608 | |
1609 | if (!m->bus) { | |
1610 | log_info("Not connected to system bus, ignoring timezone."); | |
1611 | return 0; | |
1612 | } | |
1613 | ||
1614 | r = sd_bus_call_method_async( | |
1615 | m->bus, | |
1616 | NULL, | |
1617 | "org.freedesktop.timedate1", | |
1618 | "/org/freedesktop/timedate1", | |
1619 | "org.freedesktop.timedate1", | |
1620 | "SetTimezone", | |
1621 | set_timezone_handler, | |
1622 | m, | |
1623 | "sb", | |
1624 | tz, | |
1625 | false); | |
1626 | if (r < 0) | |
1627 | return log_error_errno(r, "Could not set timezone: %m"); | |
1628 | ||
1629 | return 0; | |
1630 | } |