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sd-device: add sd_device_monitor_get_event_source()
[thirdparty/systemd.git] / src / network / networkd-manager.c
CommitLineData
53e1b683 1/* SPDX-License-Identifier: LGPL-2.1+ */
f579559b 2
091a364c 3#include <sys/socket.h>
bbf7c048 4#include <linux/if.h>
bce67bbe 5#include <linux/fib_rules.h>
0d536673 6#include <stdio_ext.h>
3bef724f 7
fc2f9534 8#include "sd-daemon.h"
07630cea 9#include "sd-netlink.h"
fc2f9534 10
b5efdb8a 11#include "alloc-util.h"
a97dcc12 12#include "bus-util.h"
07630cea 13#include "conf-parser.h"
a97dcc12 14#include "def.h"
21486d9e 15#include "device-util.h"
482d1aeb 16#include "dns-domain.h"
3ffd4af2 17#include "fd-util.h"
0d39fa9c 18#include "fileio.h"
4f5f911e 19#include "local-addresses.h"
07630cea 20#include "netlink-util.h"
23f53b99 21#include "networkd-manager.h"
00616955 22#include "ordered-set.h"
07630cea
LP		 23#include "path-util.h"
24#include "set.h"
21486d9e 25#include "strv.h"
07630cea 26#include "virt.h"
505f8da7 27
be660c37
AR		 28/* use 8 MB for receive socket kernel queue. */
29#define RCVBUF_SIZE (8*1024*1024)
30
2ad8416d
ZJS		 31const char* const network_dirs[] = {
32 "/etc/systemd/network",
33 "/run/systemd/network",
34 "/usr/lib/systemd/network",
349cc4a5 35#if HAVE_SPLIT_USR
2ad8416d
ZJS		 36 "/lib/systemd/network",
37#endif
38 NULL};
39
11bf3cce
LP		 40static int setup_default_address_pool(Manager *m) {
41 AddressPool *p;
42 int r;
43
44 assert(m);
45
46 /* Add in the well-known private address ranges. */
47
48 r = address_pool_new_from_string(m, &p, AF_INET6, "fc00::", 7);
49 if (r < 0)
50 return r;
51
52 r = address_pool_new_from_string(m, &p, AF_INET, "192.168.0.0", 16);
53 if (r < 0)
54 return r;
55
56 r = address_pool_new_from_string(m, &p, AF_INET, "172.16.0.0", 12);
57 if (r < 0)
58 return r;
59
60 r = address_pool_new_from_string(m, &p, AF_INET, "10.0.0.0", 8);
61 if (r < 0)
62 return r;
63
64 return 0;
65}
66
9c0a72f9
TG		 67static int manager_reset_all(Manager *m) {
68 Link *link;
69 Iterator i;
70 int r;
71
72 assert(m);
73
74 HASHMAP_FOREACH(link, m->links, i) {
75 r = link_carrier_reset(link);
76 if (r < 0)
2f3cf1f9 77 log_link_warning_errno(link, r, "Could not reset carrier: %m");
9c0a72f9
TG		 78 }
79
80 return 0;
81}
82
19070062 83static int match_prepare_for_sleep(sd_bus_message *message, void *userdata, sd_bus_error *ret_error) {
9c0a72f9
TG		 84 Manager *m = userdata;
85 int b, r;
86
19070062 87 assert(message);
d7afd945 88 assert(m);
9c0a72f9
TG		 89
90 r = sd_bus_message_read(message, "b", &b);
91 if (r < 0) {
92 log_debug_errno(r, "Failed to parse PrepareForSleep signal: %m");
93 return 0;
94 }
95
96 if (b)
97 return 0;
98
99 log_debug("Coming back from suspend, resetting all connections...");
100
e1694a75 101 (void) manager_reset_all(m);
9c0a72f9
TG		 102
103 return 0;
104}
105
d7afd945
LP		 106static int on_connected(sd_bus_message *message, void *userdata, sd_bus_error *ret_error) {
107 Manager *m = userdata;
9c0a72f9 108
d7afd945 109 assert(message);
9c0a72f9
TG		 110 assert(m);
111
d7afd945
LP		 112 /* Did we get a timezone or transient hostname from DHCP while D-Bus wasn't up yet? */
113 if (m->dynamic_hostname)
114 (void) manager_set_hostname(m, m->dynamic_hostname);
115 if (m->dynamic_timezone)
116 (void) manager_set_timezone(m, m->dynamic_timezone);
27dfc982
YW		 117 if (m->links_requesting_uuid)
118 (void) manager_request_product_uuid(m, NULL);
9c0a72f9 119
d7afd945
LP		 120 return 0;
121}
9c0a72f9 122
d7afd945
LP		 123int manager_connect_bus(Manager *m) {
124 int r;
125
126 assert(m);
9c0a72f9 127
d7afd945 128 if (m->bus)
9c0a72f9 129 return 0;
7d6884b6 130
621e4509 131 r = bus_open_system_watch_bind_with_description(&m->bus, "bus-api-network");
9c0a72f9 132 if (r < 0)
d7afd945 133 return log_error_errno(r, "Failed to connect to bus: %m");
9c0a72f9 134
e331e246
TG		 135 r = sd_bus_add_object_vtable(m->bus, NULL, "/org/freedesktop/network1", "org.freedesktop.network1.Manager", manager_vtable, m);
136 if (r < 0)
137 return log_error_errno(r, "Failed to add manager object vtable: %m");
138
139 r = sd_bus_add_fallback_vtable(m->bus, NULL, "/org/freedesktop/network1/link", "org.freedesktop.network1.Link", link_vtable, link_object_find, m);
140 if (r < 0)
141 return log_error_errno(r, "Failed to add link object vtable: %m");
142
143 r = sd_bus_add_node_enumerator(m->bus, NULL, "/org/freedesktop/network1/link", link_node_enumerator, m);
144 if (r < 0)
145 return log_error_errno(r, "Failed to add link enumerator: %m");
3175fcde
TG		 146
147 r = sd_bus_add_fallback_vtable(m->bus, NULL, "/org/freedesktop/network1/network", "org.freedesktop.network1.Network", network_vtable, network_object_find, m);
148 if (r < 0)
149 return log_error_errno(r, "Failed to add network object vtable: %m");
150
151 r = sd_bus_add_node_enumerator(m->bus, NULL, "/org/freedesktop/network1/network", network_node_enumerator, m);
152 if (r < 0)
153 return log_error_errno(r, "Failed to add network enumerator: %m");
e331e246 154
696fc836 155 r = sd_bus_request_name_async(m->bus, NULL, "org.freedesktop.network1", 0, NULL, NULL);
e331e246 156 if (r < 0)
0c0b9306 157 return log_error_errno(r, "Failed to request name: %m");
e331e246
TG		 158
159 r = sd_bus_attach_event(m->bus, m->event, 0);
160 if (r < 0)
161 return log_error_errno(r, "Failed to attach bus to event loop: %m");
162
d7afd945
LP		 163 r = sd_bus_match_signal_async(
164 m->bus,
cad43595 165 NULL,
d7afd945
LP		 166 "org.freedesktop.DBus.Local",
167 NULL,
168 "org.freedesktop.DBus.Local",
169 "Connected",
170 on_connected, NULL, m);
171 if (r < 0)
172 return log_error_errno(r, "Failed to request match on Connected signal: %m");
173
174 r = sd_bus_match_signal_async(
175 m->bus,
cad43595 176 NULL,
d7afd945
LP		 177 "org.freedesktop.login1",
178 "/org/freedesktop/login1",
179 "org.freedesktop.login1.Manager",
180 "PrepareForSleep",
181 match_prepare_for_sleep, NULL, m);
182 if (r < 0)
183 log_warning_errno(r, "Failed to request match for PrepareForSleep, ignoring: %m");
7901cea1 184
9c0a72f9
TG		 185 return 0;
186}
187
d2ebf952
YW		 188static int manager_udev_process_link(sd_device_monitor *monitor, sd_device *device, void *userdata) {
189 Manager *m = userdata;
51517f9e 190 const char *action;
5fae368b
TG		 191 Link *link = NULL;
192 int r, ifindex;
5544ee85 193
5fae368b
TG		 194 assert(m);
195 assert(device);
5544ee85 196
51517f9e 197 r = sd_device_get_property_value(device, "ACTION", &action);
21486d9e
YW		 198 if (r < 0) {
199 log_device_debug_errno(device, r, "Failed to get 'ACTION' property, ignoring device: %m");
5fae368b 200 return 0;
21486d9e
YW		 201 }
202
203 if (!STR_IN_SET(action, "add", "change")) {
7946d57f 204 log_device_debug(device, "Ignoring udev %s event for device.", action);
21486d9e
YW		 205 return 0;
206 }
5544ee85 207
51517f9e 208 r = sd_device_get_ifindex(device, &ifindex);
7606377e 209 if (r < 0) {
21486d9e 210 log_device_debug_errno(device, r, "Ignoring udev ADD event for device without ifindex or with invalid ifindex: %m");
5fae368b 211 return 0;
5544ee85
TG		 212 }
213
5fae368b 214 r = link_get(m, ifindex, &link);
d2ebf952
YW		 215 if (r < 0) {
216 if (r != -ENODEV)
217 log_debug_errno(r, "Failed to get link from ifindex %i, ignoring: %m", ifindex);
5fae368b 218 return 0;
d2ebf952 219 }
02b59d57 220
d2ebf952 221 (void) link_initialized(link, device);
e1694a75 222
f579559b
TG		 223 return 0;
224}
225
5fae368b
TG		 226static int manager_connect_udev(Manager *m) {
227 int r;
f579559b 228
5fae368b
TG		 229 /* udev does not initialize devices inside containers,
230 * so we rely on them being already initialized before
231 * entering the container */
75f86906 232 if (detect_container() > 0)
5fae368b 233 return 0;
f579559b 234
d2ebf952 235 r = sd_device_monitor_new(&m->device_monitor);
02b59d57 236 if (r < 0)
d2ebf952 237 return log_error_errno(r, "Failed to initialize device monitor: %m");
02b59d57 238
d2ebf952
YW		 239 r = sd_device_monitor_filter_add_match_subsystem_devtype(m->device_monitor, "net", NULL);
240 if (r < 0)
241 return log_error_errno(r, "Could not add device monitor filter: %m");
505f8da7 242
d2ebf952 243 r = sd_device_monitor_attach_event(m->device_monitor, m->event, 0);
5fae368b 244 if (r < 0)
d2ebf952 245 return log_error_errno(r, "Failed to attach event to device monitor: %m");
505f8da7 246
d2ebf952 247 r = sd_device_monitor_start(m->device_monitor, manager_udev_process_link, m, "networkd-device-monitor");
505f8da7 248 if (r < 0)
d2ebf952 249 return log_error_errno(r, "Failed to start device monitor: %m");
11a7f229 250
505f8da7
TG		 251 return 0;
252}
f579559b 253
1c8e710c
TG		 254int manager_rtnl_process_route(sd_netlink *rtnl, sd_netlink_message *message, void *userdata) {
255 Manager *m = userdata;
256 Link *link = NULL;
257 uint16_t type;
258 uint32_t ifindex, priority = 0;
983226f3 259 unsigned char protocol, scope, tos, table, rt_type;
1c8e710c
TG		 260 int family;
261 unsigned char dst_prefixlen, src_prefixlen;
262 union in_addr_union dst = {}, gw = {}, src = {}, prefsrc = {};
263 Route *route = NULL;
264 int r;
265
266 assert(rtnl);
267 assert(message);
268 assert(m);
269
270 if (sd_netlink_message_is_error(message)) {
271 r = sd_netlink_message_get_errno(message);
272 if (r < 0)
e1694a75 273 log_warning_errno(r, "rtnl: failed to receive route, ignoring: %m");
1c8e710c
TG		 274
275 return 0;
276 }
277
278 r = sd_netlink_message_get_type(message, &type);
279 if (r < 0) {
e1694a75 280 log_warning_errno(r, "rtnl: could not get message type, ignoring: %m");
1c8e710c 281 return 0;
25a1bffc 282 } else if (!IN_SET(type, RTM_NEWROUTE, RTM_DELROUTE)) {
e1694a75 283 log_warning("rtnl: received unexpected message type when processing route, ignoring");
1c8e710c
TG		 284 return 0;
285 }
286
287 r = sd_netlink_message_read_u32(message, RTA_OIF, &ifindex);
288 if (r == -ENODATA) {
289 log_debug("rtnl: received route without ifindex, ignoring");
290 return 0;
291 } else if (r < 0) {
292 log_warning_errno(r, "rtnl: could not get ifindex from route, ignoring: %m");
293 return 0;
294 } else if (ifindex <= 0) {
295 log_warning("rtnl: received route message with invalid ifindex, ignoring: %d", ifindex);
296 return 0;
297 } else {
298 r = link_get(m, ifindex, &link);
299 if (r < 0 || !link) {
300 /* when enumerating we might be out of sync, but we will
301 * get the route again, so just ignore it */
302 if (!m->enumerating)
303 log_warning("rtnl: received route for nonexistent link (%d), ignoring", ifindex);
304 return 0;
305 }
306 }
307
308 r = sd_rtnl_message_route_get_family(message, &family);
309 if (r < 0 || !IN_SET(family, AF_INET, AF_INET6)) {
e1694a75 310 log_link_warning(link, "rtnl: received address with invalid family, ignoring");
1c8e710c
TG		 311 return 0;
312 }
313
314 r = sd_rtnl_message_route_get_protocol(message, &protocol);
315 if (r < 0) {
316 log_warning_errno(r, "rtnl: could not get route protocol: %m");
317 return 0;
318 }
319
320 switch (family) {
321 case AF_INET:
322 r = sd_netlink_message_read_in_addr(message, RTA_DST, &dst.in);
323 if (r < 0 && r != -ENODATA) {
324 log_link_warning_errno(link, r, "rtnl: received route without valid destination, ignoring: %m");
325 return 0;
326 }
327
328 r = sd_netlink_message_read_in_addr(message, RTA_GATEWAY, &gw.in);
329 if (r < 0 && r != -ENODATA) {
330 log_link_warning_errno(link, r, "rtnl: received route with invalid gateway, ignoring: %m");
331 return 0;
332 }
333
334 r = sd_netlink_message_read_in_addr(message, RTA_SRC, &src.in);
335 if (r < 0 && r != -ENODATA) {
336 log_link_warning_errno(link, r, "rtnl: received route with invalid source, ignoring: %m");
337 return 0;
338 }
339
340 r = sd_netlink_message_read_in_addr(message, RTA_PREFSRC, &prefsrc.in);
341 if (r < 0 && r != -ENODATA) {
342 log_link_warning_errno(link, r, "rtnl: received route with invalid preferred source, ignoring: %m");
343 return 0;
344 }
345
346 break;
347
348 case AF_INET6:
349 r = sd_netlink_message_read_in6_addr(message, RTA_DST, &dst.in6);
350 if (r < 0 && r != -ENODATA) {
351 log_link_warning_errno(link, r, "rtnl: received route without valid destination, ignoring: %m");
352 return 0;
353 }
354
355 r = sd_netlink_message_read_in6_addr(message, RTA_GATEWAY, &gw.in6);
356 if (r < 0 && r != -ENODATA) {
357 log_link_warning_errno(link, r, "rtnl: received route with invalid gateway, ignoring: %m");
358 return 0;
359 }
360
361 r = sd_netlink_message_read_in6_addr(message, RTA_SRC, &src.in6);
362 if (r < 0 && r != -ENODATA) {
363 log_link_warning_errno(link, r, "rtnl: received route with invalid source, ignoring: %m");
364 return 0;
365 }
366
367 r = sd_netlink_message_read_in6_addr(message, RTA_PREFSRC, &prefsrc.in6);
368 if (r < 0 && r != -ENODATA) {
369 log_link_warning_errno(link, r, "rtnl: received route with invalid preferred source, ignoring: %m");
370 return 0;
371 }
372
373 break;
374
375 default:
74dead34 376 assert_not_reached("Received unsupported address family");
1c8e710c
TG		 377 return 0;
378 }
379
380 r = sd_rtnl_message_route_get_dst_prefixlen(message, &dst_prefixlen);
381 if (r < 0) {
382 log_link_warning_errno(link, r, "rtnl: received route with invalid destination prefixlen, ignoring: %m");
383 return 0;
384 }
385
386 r = sd_rtnl_message_route_get_src_prefixlen(message, &src_prefixlen);
387 if (r < 0) {
388 log_link_warning_errno(link, r, "rtnl: received route with invalid source prefixlen, ignoring: %m");
389 return 0;
390 }
391
392 r = sd_rtnl_message_route_get_scope(message, &scope);
393 if (r < 0) {
394 log_link_warning_errno(link, r, "rtnl: received route with invalid scope, ignoring: %m");
395 return 0;
396 }
397
398 r = sd_rtnl_message_route_get_tos(message, &tos);
399 if (r < 0) {
400 log_link_warning_errno(link, r, "rtnl: received route with invalid tos, ignoring: %m");
401 return 0;
402 }
403
983226f3
SS		 404 r = sd_rtnl_message_route_get_type(message, &rt_type);
405 if (r < 0) {
406 log_link_warning_errno(link, r, "rtnl: received route with invalid type, ignoring: %m");
407 return 0;
408 }
409
1c8e710c
TG		 410 r = sd_rtnl_message_route_get_table(message, &table);
411 if (r < 0) {
412 log_link_warning_errno(link, r, "rtnl: received route with invalid table, ignoring: %m");
413 return 0;
414 }
415
416 r = sd_netlink_message_read_u32(message, RTA_PRIORITY, &priority);
417 if (r < 0 && r != -ENODATA) {
418 log_link_warning_errno(link, r, "rtnl: received route with invalid priority, ignoring: %m");
419 return 0;
420 }
421
e1694a75 422 (void) route_get(link, family, &dst, dst_prefixlen, tos, priority, table, &route);
1c8e710c
TG		 423
424 switch (type) {
425 case RTM_NEWROUTE:
426 if (!route) {
427 /* A route appeared that we did not request */
428 r = route_add_foreign(link, family, &dst, dst_prefixlen, tos, priority, table, &route);
e1694a75
YW		 429 if (r < 0) {
430 log_link_warning_errno(link, r, "Failed to add route, ignoring: %m");
1c8e710c 431 return 0;
e1694a75 432 }
1c8e710c
TG		 433 }
434
bbd15900 435 route_update(route, &src, src_prefixlen, &gw, &prefsrc, scope, protocol, rt_type);
1c8e710c
TG		 436
437 break;
438
439 case RTM_DELROUTE:
b9642f41 440 route_free(route);
1c8e710c 441 break;
b9642f41 442
1c8e710c
TG		 443 default:
444 assert_not_reached("Received invalid RTNL message type");
445 }
446
447 return 1;
448}
449
200a0868
TG		 450int manager_rtnl_process_address(sd_netlink *rtnl, sd_netlink_message *message, void *userdata) {
451 Manager *m = userdata;
452 Link *link = NULL;
453 uint16_t type;
200a0868 454 unsigned char flags;
054f0db4
TG		 455 int family;
456 unsigned char prefixlen;
457 unsigned char scope;
458 union in_addr_union in_addr;
459 struct ifa_cacheinfo cinfo;
460 Address *address = NULL;
200a0868
TG		 461 char buf[INET6_ADDRSTRLEN], valid_buf[FORMAT_TIMESPAN_MAX];
462 const char *valid_str = NULL;
463 int r, ifindex;
464
465 assert(rtnl);
466 assert(message);
467 assert(m);
468
469 if (sd_netlink_message_is_error(message)) {
470 r = sd_netlink_message_get_errno(message);
471 if (r < 0)
e1694a75 472 log_warning_errno(r, "rtnl: failed to receive address, ignoring: %m");
200a0868
TG		 473
474 return 0;
475 }
476
477 r = sd_netlink_message_get_type(message, &type);
478 if (r < 0) {
e1694a75 479 log_warning_errno(r, "rtnl: could not get message type, ignoring: %m");
200a0868 480 return 0;
25a1bffc 481 } else if (!IN_SET(type, RTM_NEWADDR, RTM_DELADDR)) {
e1694a75 482 log_warning("rtnl: received unexpected message type when processing address, ignoring");
200a0868
TG		 483 return 0;
484 }
485
486 r = sd_rtnl_message_addr_get_ifindex(message, &ifindex);
487 if (r < 0) {
e1694a75 488 log_warning_errno(r, "rtnl: could not get ifindex from address, ignoring: %m");
200a0868
TG		 489 return 0;
490 } else if (ifindex <= 0) {
e1694a75 491 log_warning("rtnl: received address message with invalid ifindex, ignoring: %d", ifindex);
200a0868
TG		 492 return 0;
493 } else {
494 r = link_get(m, ifindex, &link);
495 if (r < 0 || !link) {
496 /* when enumerating we might be out of sync, but we will
497 * get the address again, so just ignore it */
498 if (!m->enumerating)
499 log_warning("rtnl: received address for nonexistent link (%d), ignoring", ifindex);
500 return 0;
501 }
502 }
503
054f0db4
TG		 504 r = sd_rtnl_message_addr_get_family(message, &family);
505 if (r < 0 || !IN_SET(family, AF_INET, AF_INET6)) {
e1694a75 506 log_link_warning(link, "rtnl: received address with invalid family, ignoring");
200a0868
TG		 507 return 0;
508 }
509
054f0db4 510 r = sd_rtnl_message_addr_get_prefixlen(message, &prefixlen);
200a0868
TG		 511 if (r < 0) {
512 log_link_warning_errno(link, r, "rtnl: received address with invalid prefixlen, ignoring: %m");
513 return 0;
514 }
515
054f0db4 516 r = sd_rtnl_message_addr_get_scope(message, &scope);
200a0868
TG		 517 if (r < 0) {
518 log_link_warning_errno(link, r, "rtnl: received address with invalid scope, ignoring: %m");
519 return 0;
520 }
521
522 r = sd_rtnl_message_addr_get_flags(message, &flags);
523 if (r < 0) {
524 log_link_warning_errno(link, r, "rtnl: received address with invalid flags, ignoring: %m");
525 return 0;
526 }
200a0868 527
054f0db4 528 switch (family) {
200a0868 529 case AF_INET:
054f0db4 530 r = sd_netlink_message_read_in_addr(message, IFA_LOCAL, &in_addr.in);
200a0868
TG		 531 if (r < 0) {
532 log_link_warning_errno(link, r, "rtnl: received address without valid address, ignoring: %m");
533 return 0;
534 }
535
536 break;
537
538 case AF_INET6:
054f0db4 539 r = sd_netlink_message_read_in6_addr(message, IFA_ADDRESS, &in_addr.in6);
200a0868
TG		 540 if (r < 0) {
541 log_link_warning_errno(link, r, "rtnl: received address without valid address, ignoring: %m");
542 return 0;
543 }
544
545 break;
546
547 default:
e1694a75 548 assert_not_reached("Received unsupported address family");
200a0868
TG		 549 }
550
054f0db4 551 if (!inet_ntop(family, &in_addr, buf, INET6_ADDRSTRLEN)) {
e1694a75 552 log_link_warning(link, "Could not print address, ignoring");
200a0868
TG		 553 return 0;
554 }
555
054f0db4 556 r = sd_netlink_message_read_cache_info(message, IFA_CACHEINFO, &cinfo);
e1694a75
YW		 557 if (r < 0 && r != -ENODATA) {
558 log_link_warning_errno(link, r, "rtnl: cannot get IFA_CACHEINFO attribute, ignoring: %m");
559 return 0;
560 } else if (r >= 0) {
4058d339 561 if (cinfo.ifa_valid != CACHE_INFO_INFINITY_LIFE_TIME)
200a0868 562 valid_str = format_timespan(valid_buf, FORMAT_TIMESPAN_MAX,
054f0db4 563 cinfo.ifa_valid * USEC_PER_SEC,
200a0868
TG		 564 USEC_PER_SEC);
565 }
566
e1694a75 567 (void) address_get(link, family, &in_addr, prefixlen, &address);
200a0868
TG		 568
569 switch (type) {
570 case RTM_NEWADDR:
36c32f61 571 if (address)
4058d339 572 log_link_debug(link, "Updating address: %s/%u (valid %s%s)", buf, prefixlen,
87e4e28d 573 valid_str ? "for " : "forever", strempty(valid_str));
36c32f61 574 else {
adda1ed9
TG		 575 /* An address appeared that we did not request */
576 r = address_add_foreign(link, family, &in_addr, prefixlen, &address);
cf1d700d 577 if (r < 0) {
e1694a75 578 log_link_warning_errno(link, r, "Failed to add address %s/%u, ignoring: %m", buf, prefixlen);
cf1d700d
TG		 579 return 0;
580 } else
4058d339 581 log_link_debug(link, "Adding address: %s/%u (valid %s%s)", buf, prefixlen,
87e4e28d 582 valid_str ? "for " : "forever", strempty(valid_str));
200a0868
TG		 583 }
584
e1694a75
YW		 585 r = address_update(address, flags, scope, &cinfo);
586 if (r < 0) {
587 log_link_warning_errno(link, r, "Failed to update address %s/%u, ignoring: %m", buf, prefixlen);
588 return 0;
589 }
36c32f61 590
200a0868
TG		 591 break;
592
593 case RTM_DELADDR:
594
054f0db4 595 if (address) {
4058d339 596 log_link_debug(link, "Removing address: %s/%u (valid %s%s)", buf, prefixlen,
87e4e28d 597 valid_str ? "for " : "forever", strempty(valid_str));
e1694a75 598 (void) address_drop(address);
200a0868 599 } else
e1694a75 600 log_link_warning(link, "Removing non-existent address: %s/%u (valid %s%s), ignoring", buf, prefixlen,
87e4e28d 601 valid_str ? "for " : "forever", strempty(valid_str));
200a0868
TG		 602
603 break;
604 default:
605 assert_not_reached("Received invalid RTNL message type");
606 }
607
608 return 1;
609}
610
1c4baffc 611static int manager_rtnl_process_link(sd_netlink *rtnl, sd_netlink_message *message, void *userdata) {
505f8da7
TG		 612 Manager *m = userdata;
613 Link *link = NULL;
4d473d5d 614 NetDev *netdev = NULL;
f2236469 615 uint16_t type;
ca4e095a 616 const char *name;
505f8da7 617 int r, ifindex;
f579559b 618
505f8da7
TG		 619 assert(rtnl);
620 assert(message);
f579559b
TG		 621 assert(m);
622
1c4baffc
TG		 623 if (sd_netlink_message_is_error(message)) {
624 r = sd_netlink_message_get_errno(message);
45af44d4 625 if (r < 0)
e1694a75 626 log_warning_errno(r, "rtnl: Could not receive link, ignoring: %m");
45af44d4
TG		 627
628 return 0;
629 }
630
1c4baffc 631 r = sd_netlink_message_get_type(message, &type);
f2236469 632 if (r < 0) {
e1694a75 633 log_warning_errno(r, "rtnl: Could not get message type, ignoring: %m");
f2236469 634 return 0;
25a1bffc 635 } else if (!IN_SET(type, RTM_NEWLINK, RTM_DELLINK)) {
e1694a75 636 log_warning("rtnl: Received unexpected message type when processing link, ignoring");
cdfee943 637 return 0;
f2236469
TG		 638 }
639
505f8da7 640 r = sd_rtnl_message_link_get_ifindex(message, &ifindex);
45af44d4 641 if (r < 0) {
e1694a75 642 log_warning_errno(r, "rtnl: Could not get ifindex from link, ignoring: %m");
45af44d4
TG		 643 return 0;
644 } else if (ifindex <= 0) {
e1694a75 645 log_warning("rtnl: received link message with invalid ifindex %d, ignoring", ifindex);
505f8da7 646 return 0;
a0db8e46 647 }
f579559b 648
1c4baffc 649 r = sd_netlink_message_read_string(message, IFLA_IFNAME, &name);
45af44d4 650 if (r < 0) {
e1694a75 651 log_warning_errno(r, "rtnl: Received link message without ifname, ignoring: %m");
4d473d5d 652 return 0;
a0db8e46
ZJS		 653 }
654
655 (void) link_get(m, ifindex, &link);
656 (void) netdev_get(m, name, &netdev);
4d473d5d
TG		 657
658 switch (type) {
659 case RTM_NEWLINK:
660 if (!link) {
661 /* link is new, so add it */
662 r = link_add(m, message, &link);
663 if (r < 0) {
e1694a75 664 log_warning_errno(r, "Could not add new link, ignoring: %m");
4d473d5d
TG		 665 return 0;
666 }
667 }
668
669 if (netdev) {
670 /* netdev exists, so make sure the ifindex matches */
505f8da7
TG		 671 r = netdev_set_ifindex(netdev, message);
672 if (r < 0) {
e1694a75 673 log_warning_errno(r, "Could not set ifindex on netdev, ignoring: %m");
505f8da7
TG		 674 return 0;
675 }
676 }
e1202047 677
f2236469 678 r = link_update(link, message);
e1694a75
YW		 679 if (r < 0) {
680 log_warning_errno(r, "Could not update link, ignoring: %m");
f2236469 681 return 0;
e1694a75 682 }
4d473d5d
TG		 683
684 break;
685
686 case RTM_DELLINK:
687 link_drop(link);
688 netdev_drop(netdev);
689
690 break;
691
692 default:
693 assert_not_reached("Received invalid RTNL message type.");
f2236469 694 }
505f8da7
TG		 695
696 return 1;
697}
698
bce67bbe
SS		 699int manager_rtnl_process_rule(sd_netlink *rtnl, sd_netlink_message *message, void *userdata) {
700 uint8_t tos = 0, to_prefixlen = 0, from_prefixlen = 0;
36e6e28b 701 union in_addr_union to = {}, from = {};
bce67bbe 702 RoutingPolicyRule *rule = NULL;
bce67bbe 703 uint32_t fwmark = 0, table = 0;
eeab051b 704 const char *iif = NULL, *oif = NULL;
bce67bbe
SS		 705 Manager *m = userdata;
706 uint16_t type;
707 int family;
708 int r;
709
710 assert(rtnl);
711 assert(message);
712 assert(m);
713
714 if (sd_netlink_message_is_error(message)) {
715 r = sd_netlink_message_get_errno(message);
716 if (r < 0)
e1694a75 717 log_warning_errno(r, "rtnl: failed to receive rule, ignoring: %m");
bce67bbe
SS		 718
719 return 0;
720 }
721
722 r = sd_netlink_message_get_type(message, &type);
723 if (r < 0) {
e1694a75 724 log_warning_errno(r, "rtnl: could not get message type, ignoring: %m");
bce67bbe
SS		 725 return 0;
726 } else if (!IN_SET(type, RTM_NEWRULE, RTM_DELRULE)) {
e1694a75 727 log_warning("rtnl: received unexpected message type '%u' when processing rule, ignoring", type);
bce67bbe
SS		 728 return 0;
729 }
730
731 r = sd_rtnl_message_get_family(message, &family);
615ded62 732 if (r < 0) {
e1694a75 733 log_warning_errno(r, "rtnl: could not get rule family, ignoring: %m");
615ded62
YW		 734 return 0;
735 } else if (!IN_SET(family, AF_INET, AF_INET6)) {
e1694a75 736 log_debug("rtnl: received address with invalid family %u, ignoring", family);
bce67bbe
SS		 737 return 0;
738 }
739
740 switch (family) {
741 case AF_INET:
742 r = sd_netlink_message_read_in_addr(message, FRA_SRC, &from.in);
e1694a75
YW		 743 if (r < 0 && r != -ENODATA) {
744 log_warning_errno(r, "rtnl: could not get FRA_SRC attribute, ignoring: %m");
745 return 0;
746 } else if (r >= 0) {
bce67bbe 747 r = sd_rtnl_message_routing_policy_rule_get_rtm_src_prefixlen(message, &from_prefixlen);
e1694a75 748 if (r < 0) {
3fe91079 749 log_warning_errno(r, "rtnl: failed to retrieve rule from prefix length, ignoring: %m");
e1694a75
YW		 750 return 0;
751 }
bce67bbe
SS		 752 }
753
754 r = sd_netlink_message_read_in_addr(message, FRA_DST, &to.in);
e1694a75
YW		 755 if (r < 0 && r != -ENODATA) {
756 log_warning_errno(r, "rtnl: could not get FRA_DST attribute, ignoring: %m");
757 return 0;
758 } else if (r >= 0) {
bce67bbe 759 r = sd_rtnl_message_routing_policy_rule_get_rtm_dst_prefixlen(message, &to_prefixlen);
e1694a75 760 if (r < 0) {
3fe91079 761 log_warning_errno(r, "rtnl: failed to retrieve rule to prefix length, ignoring: %m");
e1694a75
YW		 762 return 0;
763 }
bce67bbe
SS		 764 }
765
766 break;
767
768 case AF_INET6:
769 r = sd_netlink_message_read_in6_addr(message, FRA_SRC, &from.in6);
e1694a75
YW		 770 if (r < 0 && r != -ENODATA) {
771 log_warning_errno(r, "rtnl: could not get FRA_SRC attribute, ignoring: %m");
772 return 0;
773 } else if (r >= 0) {
bce67bbe 774 r = sd_rtnl_message_routing_policy_rule_get_rtm_src_prefixlen(message, &from_prefixlen);
e1694a75 775 if (r < 0) {
3fe91079 776 log_warning_errno(r, "rtnl: failed to retrieve rule from prefix length, ignoring: %m");
e1694a75
YW		 777 return 0;
778 }
bce67bbe
SS		 779 }
780
781 r = sd_netlink_message_read_in6_addr(message, FRA_DST, &to.in6);
e1694a75
YW		 782 if (r < 0 && r != -ENODATA) {
783 log_warning_errno(r, "rtnl: could not get FRA_DST attribute, ignoring: %m");
784 return 0;
785 } else if (r >= 0) {
bce67bbe 786 r = sd_rtnl_message_routing_policy_rule_get_rtm_dst_prefixlen(message, &to_prefixlen);
e1694a75 787 if (r < 0) {
3fe91079 788 log_warning_errno(r, "rtnl: failed to retrieve rule to prefix length, ignoring: %m");
e1694a75
YW		 789 return 0;
790 }
bce67bbe
SS		 791 }
792
793 break;
794
795 default:
74dead34 796 assert_not_reached("Received unsupported address family");
bce67bbe
SS		 797 }
798
799 if (from_prefixlen == 0 && to_prefixlen == 0)
800 return 0;
801
e1694a75
YW		 802 r = sd_netlink_message_read_u32(message, FRA_FWMARK, &fwmark);
803 if (r < 0 && r != -ENODATA) {
804 log_warning_errno(r, "rtnl: could not get FRA_FWMARK attribute, ignoring: %m");
805 return 0;
806 }
807
808 r = sd_netlink_message_read_u32(message, FRA_TABLE, &table);
809 if (r < 0 && r != -ENODATA) {
810 log_warning_errno(r, "rtnl: could not get FRA_TABLE attribute, ignoring: %m");
811 return 0;
812 }
813
814 r = sd_rtnl_message_routing_policy_rule_get_tos(message, &tos);
815 if (r < 0 && r != -ENODATA) {
816 log_warning_errno(r, "rtnl: could not get ip rule TOS, ignoring: %m");
817 return 0;
818 }
819
eeab051b 820 r = sd_netlink_message_read_string(message, FRA_IIFNAME, &iif);
e1694a75
YW		 821 if (r < 0 && r != -ENODATA) {
822 log_warning_errno(r, "rtnl: could not get FRA_IIFNAME attribute, ignoring: %m");
823 return 0;
824 }
825
eeab051b 826 r = sd_netlink_message_read_string(message, FRA_OIFNAME, &oif);
e1694a75
YW		 827 if (r < 0 && r != -ENODATA) {
828 log_warning_errno(r, "rtnl: could not get FRA_OIFNAME attribute, ignoring: %m");
829 return 0;
830 }
bce67bbe 831
762e2659 832 (void) routing_policy_rule_get(m, family, &from, from_prefixlen, &to, to_prefixlen, tos, fwmark, table, iif, oif, &rule);
bce67bbe
SS		 833
834 switch (type) {
835 case RTM_NEWRULE:
508f63b4 836 if (!rule) {
762e2659 837 r = routing_policy_rule_add_foreign(m, family, &from, from_prefixlen, &to, to_prefixlen, tos, fwmark, table, iif, oif, &rule);
bce67bbe 838 if (r < 0) {
e1694a75 839 log_warning_errno(r, "Could not add rule, ignoring: %m");
bce67bbe
SS		 840 return 0;
841 }
842 }
843 break;
844 case RTM_DELRULE:
845 routing_policy_rule_free(rule);
846
847 break;
848
849 default:
850 assert_not_reached("Received invalid RTNL message type");
851 }
852
853 return 1;
854}
855
5fae368b
TG		 856static int systemd_netlink_fd(void) {
857 int n, fd, rtnl_fd = -EINVAL;
858
859 n = sd_listen_fds(true);
860 if (n <= 0)
861 return -EINVAL;
862
863 for (fd = SD_LISTEN_FDS_START; fd < SD_LISTEN_FDS_START + n; fd ++) {
864 if (sd_is_socket(fd, AF_NETLINK, SOCK_RAW, -1) > 0) {
865 if (rtnl_fd >= 0)
866 return -EINVAL;
867
868 rtnl_fd = fd;
869 }
870 }
871
872 return rtnl_fd;
873}
874
05d0c2e3
JT		 875static int manager_connect_genl(Manager *m) {
876 int r;
877
878 assert(m);
879
880 r = sd_genl_socket_open(&m->genl);
881 if (r < 0)
882 return r;
883
884 r = sd_netlink_inc_rcvbuf(m->genl, RCVBUF_SIZE);
885 if (r < 0)
886 return r;
887
888 r = sd_netlink_attach_event(m->genl, m->event, 0);
889 if (r < 0)
890 return r;
891
892 return 0;
893}
894
5fae368b
TG		 895static int manager_connect_rtnl(Manager *m) {
896 int fd, r;
505f8da7
TG		 897
898 assert(m);
505f8da7 899
5fae368b
TG		 900 fd = systemd_netlink_fd();
901 if (fd < 0)
1c4baffc 902 r = sd_netlink_open(&m->rtnl);
5fae368b 903 else
1c4baffc 904 r = sd_netlink_open_fd(&m->rtnl, fd);
505f8da7
TG		 905 if (r < 0)
906 return r;
907
1c4baffc 908 r = sd_netlink_inc_rcvbuf(m->rtnl, RCVBUF_SIZE);
f579559b 909 if (r < 0)
bf5332d2 910 return r;
f579559b 911
1c4baffc 912 r = sd_netlink_attach_event(m->rtnl, m->event, 0);
505f8da7
TG		 913 if (r < 0)
914 return r;
f579559b 915
8190a388 916 r = sd_netlink_add_match(m->rtnl, NULL, RTM_NEWLINK, &manager_rtnl_process_link, NULL, m, "network-rtnl_process_link");
5fae368b
TG		 917 if (r < 0)
918 return r;
505f8da7 919
8190a388 920 r = sd_netlink_add_match(m->rtnl, NULL, RTM_DELLINK, &manager_rtnl_process_link, NULL, m, "network-rtnl_process_link");
5fae368b
TG		 921 if (r < 0)
922 return r;
45af44d4 923
8190a388 924 r = sd_netlink_add_match(m->rtnl, NULL, RTM_NEWADDR, &manager_rtnl_process_address, NULL, m, "network-rtnl_process_address");
5fae368b
TG		 925 if (r < 0)
926 return r;
927
8190a388 928 r = sd_netlink_add_match(m->rtnl, NULL, RTM_DELADDR, &manager_rtnl_process_address, NULL, m, "network-rtnl_process_address");
5fae368b
TG		 929 if (r < 0)
930 return r;
931
8190a388 932 r = sd_netlink_add_match(m->rtnl, NULL, RTM_NEWROUTE, &manager_rtnl_process_route, NULL, m, "network-rtnl_process_route");
1c8e710c
TG		 933 if (r < 0)
934 return r;
935
8190a388 936 r = sd_netlink_add_match(m->rtnl, NULL, RTM_DELROUTE, &manager_rtnl_process_route, NULL, m, "network-rtnl_process_route");
1c8e710c
TG		 937 if (r < 0)
938 return r;
939
8190a388 940 r = sd_netlink_add_match(m->rtnl, NULL, RTM_NEWRULE, &manager_rtnl_process_rule, NULL, m, "network-rtnl_process_rule");
bce67bbe
SS		 941 if (r < 0)
942 return r;
943
8190a388 944 r = sd_netlink_add_match(m->rtnl, NULL, RTM_DELRULE, &manager_rtnl_process_rule, NULL, m, "network-rtnl_process_rule");
bce67bbe
SS		 945 if (r < 0)
946 return r;
947
5fae368b 948 return 0;
45af44d4 949}
505f8da7 950
5512a963 951static int ordered_set_put_in_addr_data(OrderedSet *s, const struct in_addr_data *address) {
84de38c5
TG		 952 char *p;
953 int r;
954
955 assert(s);
5512a963
LP		 956 assert(address);
957
958 r = in_addr_to_string(address->family, &address->address, &p);
959 if (r < 0)
960 return r;
961
962 r = ordered_set_consume(s, p);
963 if (r == -EEXIST)
964 return 0;
965
966 return r;
967}
968
969static int ordered_set_put_in_addr_datav(OrderedSet *s, const struct in_addr_data *addresses, unsigned n) {
970 int r, c = 0;
971 unsigned i;
972
973 assert(s);
974 assert(addresses || n == 0);
975
976 for (i = 0; i < n; i++) {
977 r = ordered_set_put_in_addr_data(s, addresses+i);
978 if (r < 0)
979 return r;
980
981 c += r;
982 }
983
984 return c;
985}
986
987static int ordered_set_put_in4_addr(OrderedSet *s, const struct in_addr *address) {
988 char *p;
989 int r;
990
991 assert(s);
992 assert(address);
84de38c5
TG		 993
994 r = in_addr_to_string(AF_INET, (const union in_addr_union*) address, &p);
995 if (r < 0)
996 return r;
997
00616955 998 r = ordered_set_consume(s, p);
84de38c5
TG		 999 if (r == -EEXIST)
1000 return 0;
1001
1002 return r;
1003}
1004
5512a963
LP		 1005static int ordered_set_put_in4_addrv(OrderedSet *s, const struct in_addr *addresses, unsigned n) {
1006 int r, c = 0;
1007 unsigned i;
84de38c5
TG		 1008
1009 assert(s);
5512a963 1010 assert(n == 0 || addresses);
84de38c5
TG		 1011
1012 for (i = 0; i < n; i++) {
5512a963 1013 r = ordered_set_put_in4_addr(s, addresses+i);
84de38c5
TG		 1014 if (r < 0)
1015 return r;
1016
1017 c += r;
1018 }
1019
1020 return c;
1021}
1022
00616955 1023static void print_string_set(FILE *f, const char *field, OrderedSet *s) {
84de38c5
TG		 1024 bool space = false;
1025 Iterator i;
1026 char *p;
1027
00616955 1028 if (ordered_set_isempty(s))
84de38c5
TG		 1029 return;
1030
0d536673 1031 fputs(field, f);
84de38c5 1032
d390f8ef
LP		 1033 ORDERED_SET_FOREACH(p, s, i)
1034 fputs_with_space(f, p, NULL, &space);
1035
0d536673 1036 fputc('\n', f);
84de38c5
TG		 1037}
1038
1039static int manager_save(Manager *m) {
00616955 1040 _cleanup_ordered_set_free_free_ OrderedSet *dns = NULL, *ntp = NULL, *search_domains = NULL, *route_domains = NULL;
84de38c5
TG		 1041 Link *link;
1042 Iterator i;
1043 _cleanup_free_ char *temp_path = NULL;
1044 _cleanup_fclose_ FILE *f = NULL;
1045 LinkOperationalState operstate = LINK_OPERSTATE_OFF;
1046 const char *operstate_str;
1047 int r;
1048
1049 assert(m);
1050 assert(m->state_file);
1051
1052 /* We add all NTP and DNS server to a set, to filter out duplicates */
00616955 1053 dns = ordered_set_new(&string_hash_ops);
84de38c5
TG		 1054 if (!dns)
1055 return -ENOMEM;
1056
00616955 1057 ntp = ordered_set_new(&string_hash_ops);
84de38c5
TG		 1058 if (!ntp)
1059 return -ENOMEM;
1060
482d1aeb 1061 search_domains = ordered_set_new(&dns_name_hash_ops);
3df9bec5
LP		 1062 if (!search_domains)
1063 return -ENOMEM;
1064
482d1aeb 1065 route_domains = ordered_set_new(&dns_name_hash_ops);
3df9bec5 1066 if (!route_domains)
84de38c5
TG		 1067 return -ENOMEM;
1068
1069 HASHMAP_FOREACH(link, m->links, i) {
1070 if (link->flags & IFF_LOOPBACK)
1071 continue;
1072
1073 if (link->operstate > operstate)
1074 operstate = link->operstate;
1075
1076 if (!link->network)
1077 continue;
1078
1079 /* First add the static configured entries */
5512a963 1080 r = ordered_set_put_in_addr_datav(dns, link->network->dns, link->network->n_dns);
84de38c5
TG		 1081 if (r < 0)
1082 return r;
1083
00616955 1084 r = ordered_set_put_strdupv(ntp, link->network->ntp);
84de38c5
TG		 1085 if (r < 0)
1086 return r;
1087
00616955 1088 r = ordered_set_put_strdupv(search_domains, link->network->search_domains);
3df9bec5
LP		 1089 if (r < 0)
1090 return r;
1091
00616955 1092 r = ordered_set_put_strdupv(route_domains, link->network->route_domains);
84de38c5
TG		 1093 if (r < 0)
1094 return r;
1095
1096 if (!link->dhcp_lease)
1097 continue;
1098
1099 /* Secondly, add the entries acquired via DHCP */
27cb34f5 1100 if (link->network->dhcp_use_dns) {
84de38c5
TG		 1101 const struct in_addr *addresses;
1102
1103 r = sd_dhcp_lease_get_dns(link->dhcp_lease, &addresses);
1104 if (r > 0) {
5512a963 1105 r = ordered_set_put_in4_addrv(dns, addresses, r);
84de38c5
TG		 1106 if (r < 0)
1107 return r;
1108 } else if (r < 0 && r != -ENODATA)
1109 return r;
1110 }
1111
27cb34f5 1112 if (link->network->dhcp_use_ntp) {
84de38c5
TG		 1113 const struct in_addr *addresses;
1114
1115 r = sd_dhcp_lease_get_ntp(link->dhcp_lease, &addresses);
1116 if (r > 0) {
5512a963 1117 r = ordered_set_put_in4_addrv(ntp, addresses, r);
84de38c5
TG		 1118 if (r < 0)
1119 return r;
1120 } else if (r < 0 && r != -ENODATA)
1121 return r;
1122 }
1123
b2a81c0b 1124 if (link->network->dhcp_use_domains != DHCP_USE_DOMAINS_NO) {
84de38c5 1125 const char *domainname;
b85bc551 1126 char **domains = NULL;
84de38c5 1127
b85bc551 1128 OrderedSet *target_domains = (link->network->dhcp_use_domains == DHCP_USE_DOMAINS_YES) ? search_domains : route_domains;
84de38c5
TG		 1129 r = sd_dhcp_lease_get_domainname(link->dhcp_lease, &domainname);
1130 if (r >= 0) {
b85bc551
DW		 1131 r = ordered_set_put_strdup(target_domains, domainname);
1132 if (r < 0)
1133 return r;
1134 } else if (r != -ENODATA)
1135 return r;
b2a81c0b 1136
b85bc551
DW		 1137 r = sd_dhcp_lease_get_search_domains(link->dhcp_lease, &domains);
1138 if (r >= 0) {
1139 r = ordered_set_put_strdupv(target_domains, domains);
84de38c5
TG		 1140 if (r < 0)
1141 return r;
1142 } else if (r != -ENODATA)
1143 return r;
1144 }
1145 }
1146
1147 operstate_str = link_operstate_to_string(operstate);
1148 assert(operstate_str);
1149
1150 r = fopen_temporary(m->state_file, &f, &temp_path);
1151 if (r < 0)
1152 return r;
1153
0d536673 1154 (void) __fsetlocking(f, FSETLOCKING_BYCALLER);
5512a963 1155 (void) fchmod(fileno(f), 0644);
84de38c5
TG		 1156
1157 fprintf(f,
1158 "# This is private data. Do not parse.\n"
1159 "OPER_STATE=%s\n", operstate_str);
1160
1161 print_string_set(f, "DNS=", dns);
1162 print_string_set(f, "NTP=", ntp);
3df9bec5
LP		 1163 print_string_set(f, "DOMAINS=", search_domains);
1164 print_string_set(f, "ROUTE_DOMAINS=", route_domains);
84de38c5 1165
458d8ae3
ZJS		 1166 r = routing_policy_serialize_rules(m->rules, f);
1167 if (r < 0)
1168 goto fail;
bce67bbe 1169
84de38c5
TG		 1170 r = fflush_and_check(f);
1171 if (r < 0)
1172 goto fail;
1173
1174 if (rename(temp_path, m->state_file) < 0) {
1175 r = -errno;
1176 goto fail;
1177 }
1178
1179 if (m->operational_state != operstate) {
1180 m->operational_state = operstate;
1181 r = manager_send_changed(m, "OperationalState", NULL);
1182 if (r < 0)
1183 log_error_errno(r, "Could not emit changed OperationalState: %m");
1184 }
1185
1186 m->dirty = false;
1187
1188 return 0;
1189
1190fail:
1191 (void) unlink(m->state_file);
1192 (void) unlink(temp_path);
1193
1194 return log_error_errno(r, "Failed to save network state to %s: %m", m->state_file);
1195}
1196
1197static int manager_dirty_handler(sd_event_source *s, void *userdata) {
1198 Manager *m = userdata;
1199 Link *link;
1200 Iterator i;
1201 int r;
1202
1203 assert(m);
1204
1205 if (m->dirty)
1206 manager_save(m);
1207
1208 SET_FOREACH(link, m->dirty_links, i) {
1209 r = link_save(link);
1210 if (r >= 0)
1211 link_clean(link);
1212 }
1213
1214 return 1;
1215}
1216
e133b289
PF		 1217Link *manager_dhcp6_prefix_get(Manager *m, struct in6_addr *addr) {
1218 assert_return(m, NULL);
1219 assert_return(m->dhcp6_prefixes, NULL);
1220 assert_return(addr, NULL);
1221
1222 return hashmap_get(m->dhcp6_prefixes, addr);
1223}
1224
c8ee637e 1225static int dhcp6_route_add_handler(sd_netlink *nl, sd_netlink_message *m, void *userdata) {
1046bf9b 1226 Link *link = userdata;
9f386c6d 1227 int r;
9f386c6d 1228
1046bf9b
YW		 1229 assert(link);
1230
9f386c6d 1231 r = sd_netlink_message_get_errno(m);
e1d737ef 1232 if (r < 0 && r != -EEXIST)
1046bf9b 1233 log_link_debug_errno(link, r, "Received error adding DHCPv6 Prefix Delegation route: %m");
9f386c6d
PF		 1234
1235 return 0;
1236}
1237
e133b289 1238int manager_dhcp6_prefix_add(Manager *m, struct in6_addr *addr, Link *link) {
9f386c6d
PF		 1239 int r;
1240 Route *route;
e1d737ef 1241 _cleanup_free_ char *buf = NULL;
9f386c6d 1242
e133b289
PF		 1243 assert_return(m, -EINVAL);
1244 assert_return(m->dhcp6_prefixes, -ENODATA);
1245 assert_return(addr, -EINVAL);
1246
9f386c6d
PF		 1247 r = route_add(link, AF_INET6, (union in_addr_union *) addr, 64,
1248 0, 0, 0, &route);
1249 if (r < 0)
1250 return r;
1251
c8ee637e 1252 r = route_configure(route, link, dhcp6_route_add_handler);
9f386c6d
PF		 1253 if (r < 0)
1254 return r;
1255
e1d737ef
PF		 1256 (void) in_addr_to_string(AF_INET6, (union in_addr_union *) addr, &buf);
1257 log_link_debug(link, "Adding prefix route %s/64", strnull(buf));
1258
e133b289
PF		 1259 return hashmap_put(m->dhcp6_prefixes, addr, link);
1260}
1261
c8ee637e 1262static int dhcp6_route_remove_handler(sd_netlink *nl, sd_netlink_message *m, void *userdata) {
1046bf9b 1263 Link *link = userdata;
9f386c6d 1264 int r;
9f386c6d 1265
1046bf9b
YW		 1266 assert(link);
1267
9f386c6d 1268 r = sd_netlink_message_get_errno(m);
e1d737ef 1269 if (r < 0)
1046bf9b 1270 log_link_debug_errno(link, r, "Received error on DHCPv6 Prefix Delegation route removal: %m");
9f386c6d 1271
0ae286e6 1272 return 1;
9f386c6d
PF		 1273}
1274
fdb20b7c 1275static int manager_dhcp6_prefix_remove(Manager *m, struct in6_addr *addr) {
e133b289 1276 Link *l;
9f386c6d
PF		 1277 int r;
1278 Route *route;
e1d737ef 1279 _cleanup_free_ char *buf = NULL;
e133b289
PF		 1280
1281 assert_return(m, -EINVAL);
1282 assert_return(m->dhcp6_prefixes, -ENODATA);
1283 assert_return(addr, -EINVAL);
1284
1285 l = hashmap_remove(m->dhcp6_prefixes, addr);
1286 if (!l)
1287 return -EINVAL;
1288
1289 (void) sd_radv_remove_prefix(l->radv, addr, 64);
9f386c6d
PF		 1290 r = route_get(l, AF_INET6, (union in_addr_union *) addr, 64,
1291 0, 0, 0, &route);
e1d737ef
PF		 1292 if (r < 0)
1293 return r;
1294
c8ee637e 1295 r = route_remove(route, l, dhcp6_route_remove_handler);
e1d737ef
PF		 1296 if (r < 0)
1297 return r;
1298
1299 (void) in_addr_to_string(AF_INET6, (union in_addr_union *) addr, &buf);
1300 log_link_debug(l, "Removing prefix route %s/64", strnull(buf));
e133b289
PF		 1301
1302 return 0;
1303}
1304
1305int manager_dhcp6_prefix_remove_all(Manager *m, Link *link) {
1306 Iterator i;
1307 Link *l;
1308 struct in6_addr *addr;
1309
1310 assert_return(m, -EINVAL);
b7d16a91 1311 assert_return(link, -EINVAL);
e133b289
PF		 1312
1313 HASHMAP_FOREACH_KEY(l, addr, m->dhcp6_prefixes, i) {
1314 if (l != link)
1315 continue;
1316
9f386c6d 1317 (void) manager_dhcp6_prefix_remove(m, addr);
e133b289
PF		 1318 }
1319
1320 return 0;
1321}
1322
1323static void dhcp6_prefixes_hash_func(const void *p, struct siphash *state) {
1324 const struct in6_addr *addr = p;
1325
1326 assert(p);
1327
1328 siphash24_compress(addr, sizeof(*addr), state);
1329}
1330
1331static int dhcp6_prefixes_compare_func(const void *_a, const void *_b) {
1332 const struct in6_addr *a = _a, *b = _b;
1333
aa18944d 1334 return memcmp(a, b, sizeof(*a));
e133b289
PF		 1335}
1336
1337static const struct hash_ops dhcp6_prefixes_hash_ops = {
1338 .hash = dhcp6_prefixes_hash_func,
1339 .compare = dhcp6_prefixes_compare_func,
1340};
1341
3534a043 1342int manager_new(Manager **ret) {
8e766630 1343 _cleanup_(manager_freep) Manager *m = NULL;
45af44d4 1344 int r;
f579559b 1345
5fae368b
TG		 1346 m = new0(Manager, 1);
1347 if (!m)
1348 return -ENOMEM;
45af44d4 1349
5fae368b
TG		 1350 m->state_file = strdup("/run/systemd/netif/state");
1351 if (!m->state_file)
1352 return -ENOMEM;
1353
3534a043
YW		 1354 r = sd_event_default(&m->event);
1355 if (r < 0)
1356 return r;
1357
05e21627
YW		 1358 (void) sd_event_set_watchdog(m->event, true);
1359 (void) sd_event_add_signal(m->event, NULL, SIGTERM, NULL, NULL);
1360 (void) sd_event_add_signal(m->event, NULL, SIGINT, NULL, NULL);
5fae368b 1361
84de38c5
TG		 1362 r = sd_event_add_post(m->event, NULL, manager_dirty_handler, m);
1363 if (r < 0)
1364 return r;
1365
5fae368b 1366 r = manager_connect_rtnl(m);
45af44d4
TG		 1367 if (r < 0)
1368 return r;
1369
05d0c2e3
JT		 1370 r = manager_connect_genl(m);
1371 if (r < 0)
1372 return r;
1373
5fae368b
TG		 1374 r = manager_connect_udev(m);
1375 if (r < 0)
1376 return r;
45af44d4 1377
5fae368b
TG		 1378 m->netdevs = hashmap_new(&string_hash_ops);
1379 if (!m->netdevs)
1380 return -ENOMEM;
f579559b 1381
5fae368b 1382 LIST_HEAD_INIT(m->networks);
f579559b 1383
05d0c2e3
JT		 1384 r = sd_resolve_default(&m->resolve);
1385 if (r < 0)
1386 return r;
1387
1388 r = sd_resolve_attach_event(m->resolve, m->event, 0);
1389 if (r < 0)
1390 return r;
1391
5fae368b
TG		 1392 r = setup_default_address_pool(m);
1393 if (r < 0)
1394 return r;
f579559b 1395
e133b289
PF		 1396 m->dhcp6_prefixes = hashmap_new(&dhcp6_prefixes_hash_ops);
1397 if (!m->dhcp6_prefixes)
1398 return -ENOMEM;
1399
8341a5c3 1400 m->duid.type = DUID_TYPE_EN;
413708d1 1401
458d8ae3 1402 (void) routing_policy_load_rules(m->state_file, &m->rules_saved);
bce67bbe 1403
1cc6c93a 1404 *ret = TAKE_PTR(m);
f579559b 1405
f579559b
TG		 1406 return 0;
1407}
1408
5fae368b 1409void manager_free(Manager *m) {
c4397d94 1410 AddressPool *pool;
5fae368b 1411 Network *network;
5fae368b 1412 Link *link;
f579559b 1413
5fae368b
TG		 1414 if (!m)
1415 return;
505f8da7 1416
5fae368b 1417 free(m->state_file);
505f8da7 1418
1046bf9b
YW		 1419 sd_netlink_unref(m->rtnl);
1420 sd_netlink_unref(m->genl);
c195364d 1421 sd_resolve_unref(m->resolve);
1046bf9b 1422
bce67bbe
SS		 1423 while ((network = m->networks))
1424 network_free(network);
1425
e133b289 1426 while ((link = hashmap_first(m->dhcp6_prefixes)))
65dd5e31 1427 manager_dhcp6_prefix_remove_all(m, link);
e133b289
PF		 1428 hashmap_free(m->dhcp6_prefixes);
1429
65dd5e31
PF		 1430 while ((link = hashmap_first(m->links))) {
1431 if (link->dhcp6_client)
1432 (void) dhcp6_lease_pd_prefix_lost(link->dhcp6_client,
1433 link);
1434
1435 hashmap_remove(m->links, INT_TO_PTR(link->ifindex));
1436
5fae368b 1437 link_unref(link);
65dd5e31 1438 }
f579559b 1439
c4397d94
YW		 1440 m->dirty_links = set_free_with_destructor(m->dirty_links, link_unref);
1441 m->links = hashmap_free(m->links);
1442 m->links_requesting_uuid = set_free(m->links_requesting_uuid);
27dfc982
YW		 1443 set_free(m->duids_requesting_uuid);
1444
dbffab87
TG		 1445 hashmap_free(m->networks_by_name);
1446
c4397d94 1447 m->netdevs = hashmap_free_with_destructor(m->netdevs, netdev_unref);
5fae368b
TG		 1448
1449 while ((pool = m->address_pools))
1450 address_pool_free(pool);
1451
f19ee681
YW		 1452 /* routing_policy_rule_free() access m->rules and m->rules_foreign.
1453 * So, it is necessary to set NULL after the sets are freed. */
1454 m->rules = set_free_with_destructor(m->rules, routing_policy_rule_free);
1455 m->rules_foreign = set_free_with_destructor(m->rules_foreign, routing_policy_rule_free);
b921fcb2 1456 set_free_with_destructor(m->rules_saved, routing_policy_rule_free);
bce67bbe 1457
2f5b4a77 1458 sd_event_unref(m->event);
5fae368b 1459
d2ebf952 1460 sd_device_monitor_unref(m->device_monitor);
7d20d375
TG		 1461
1462 sd_bus_unref(m->bus);
7d20d375 1463
7901cea1
MP		 1464 free(m->dynamic_timezone);
1465 free(m->dynamic_hostname);
1466
5fae368b
TG		 1467 free(m);
1468}
1469
b76d99d9 1470int manager_start(Manager *m) {
84de38c5
TG		 1471 Link *link;
1472 Iterator i;
1473
a97dcc12
TG		 1474 assert(m);
1475
84de38c5
TG		 1476 /* The dirty handler will deal with future serialization, but the first one
1477 must be done explicitly. */
1478
1479 manager_save(m);
1480
1481 HASHMAP_FOREACH(link, m->links, i)
1482 link_save(link);
1483
b76d99d9 1484 return 0;
a97dcc12
TG		 1485}
1486
5fae368b
TG		 1487int manager_load_config(Manager *m) {
1488 int r;
1489
1490 /* update timestamp */
1491 paths_check_timestamp(network_dirs, &m->network_dirs_ts_usec, true);
1492
1493 r = netdev_load(m);
f579559b
TG		 1494 if (r < 0)
1495 return r;
1496
5fae368b 1497 r = network_load(m);
9021bb9f
TG		 1498 if (r < 0)
1499 return r;
1500
f579559b
TG		 1501 return 0;
1502}
f882c247 1503
5fae368b
TG		 1504bool manager_should_reload(Manager *m) {
1505 return paths_check_timestamp(network_dirs, &m->network_dirs_ts_usec, false);
1506}
1507
1508int manager_rtnl_enumerate_links(Manager *m) {
4afd3348 1509 _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL, *reply = NULL;
1c4baffc 1510 sd_netlink_message *link;
f882c247
TG		 1511 int r;
1512
5da8149f 1513 assert(m);
5fae368b 1514 assert(m->rtnl);
5da8149f 1515
5fae368b 1516 r = sd_rtnl_message_new_link(m->rtnl, &req, RTM_GETLINK, 0);
f882c247
TG		 1517 if (r < 0)
1518 return r;
1519
1c4baffc 1520 r = sd_netlink_message_request_dump(req, true);
dd3efc09
TG		 1521 if (r < 0)
1522 return r;
1523
1c4baffc 1524 r = sd_netlink_call(m->rtnl, req, 0, &reply);
f2236469
TG		 1525 if (r < 0)
1526 return r;
1527
1c4baffc 1528 for (link = reply; link; link = sd_netlink_message_next(link)) {
5fae368b 1529 int k;
2e9f08ea 1530
6a24f148
TG		 1531 m->enumerating = true;
1532
5fae368b
TG		 1533 k = manager_rtnl_process_link(m->rtnl, link, m);
1534 if (k < 0)
1535 r = k;
6a24f148
TG		 1536
1537 m->enumerating = false;
5fae368b 1538 }
2e9f08ea 1539
5fae368b 1540 return r;
f882c247 1541}
3bef724f 1542
5fae368b 1543int manager_rtnl_enumerate_addresses(Manager *m) {
4afd3348 1544 _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL, *reply = NULL;
1c4baffc 1545 sd_netlink_message *addr;
1346b1f0
TG		 1546 int r;
1547
5fae368b
TG		 1548 assert(m);
1549 assert(m->rtnl);
bcbca829 1550
5fae368b
TG		 1551 r = sd_rtnl_message_new_addr(m->rtnl, &req, RTM_GETADDR, 0, 0);
1552 if (r < 0)
1553 return r;
bcbca829 1554
1c4baffc 1555 r = sd_netlink_message_request_dump(req, true);
1346b1f0
TG		 1556 if (r < 0)
1557 return r;
1558
1c4baffc 1559 r = sd_netlink_call(m->rtnl, req, 0, &reply);
5fae368b
TG		 1560 if (r < 0)
1561 return r;
1562
1c4baffc 1563 for (addr = reply; addr; addr = sd_netlink_message_next(addr)) {
5fae368b
TG		 1564 int k;
1565
6a24f148
TG		 1566 m->enumerating = true;
1567
200a0868 1568 k = manager_rtnl_process_address(m->rtnl, addr, m);
5fae368b
TG		 1569 if (k < 0)
1570 r = k;
6a24f148
TG		 1571
1572 m->enumerating = false;
5fae368b
TG		 1573 }
1574
1575 return r;
1346b1f0
TG		 1576}
1577
1c8e710c 1578int manager_rtnl_enumerate_routes(Manager *m) {
4afd3348 1579 _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL, *reply = NULL;
1c8e710c
TG		 1580 sd_netlink_message *route;
1581 int r;
1582
1583 assert(m);
1584 assert(m->rtnl);
1585
1586 r = sd_rtnl_message_new_route(m->rtnl, &req, RTM_GETROUTE, 0, 0);
1587 if (r < 0)
1588 return r;
1589
1590 r = sd_netlink_message_request_dump(req, true);
1591 if (r < 0)
1592 return r;
1593
1594 r = sd_netlink_call(m->rtnl, req, 0, &reply);
1595 if (r < 0)
1596 return r;
1597
1598 for (route = reply; route; route = sd_netlink_message_next(route)) {
1599 int k;
1600
1601 m->enumerating = true;
1602
1603 k = manager_rtnl_process_route(m->rtnl, route, m);
1604 if (k < 0)
1605 r = k;
1606
1607 m->enumerating = false;
1608 }
1609
1610 return r;
1611}
1612
bce67bbe
SS		 1613int manager_rtnl_enumerate_rules(Manager *m) {
1614 _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL, *reply = NULL;
1615 sd_netlink_message *rule;
1616 int r;
1617
1618 assert(m);
1619 assert(m->rtnl);
1620
1621 r = sd_rtnl_message_new_routing_policy_rule(m->rtnl, &req, RTM_GETRULE, 0);
1622 if (r < 0)
1623 return r;
1624
1625 r = sd_netlink_message_request_dump(req, true);
1626 if (r < 0)
1627 return r;
1628
1629 r = sd_netlink_call(m->rtnl, req, 0, &reply);
6acbbdd4
SS		 1630 if (r < 0) {
1631 if (r == -EOPNOTSUPP) {
1632 log_debug("FIB Rules are not supported by the kernel. Ignoring.");
1633 return 0;
1634 }
1635
bce67bbe 1636 return r;
6acbbdd4 1637 }
bce67bbe
SS		 1638
1639 for (rule = reply; rule; rule = sd_netlink_message_next(rule)) {
1640 int k;
1641
1642 m->enumerating = true;
1643
1644 k = manager_rtnl_process_rule(m->rtnl, rule, m);
1645 if (k < 0)
1646 r = k;
1647
1648 m->enumerating = false;
1649 }
1650
1651 return r;
1652}
1653
0dd25fb9 1654int manager_address_pool_acquire(Manager *m, int family, unsigned prefixlen, union in_addr_union *found) {
11bf3cce
LP		 1655 AddressPool *p;
1656 int r;
1657
1658 assert(m);
1659 assert(prefixlen > 0);
1660 assert(found);
1661
1662 LIST_FOREACH(address_pools, p, m->address_pools) {
1663 if (p->family != family)
1664 continue;
1665
1666 r = address_pool_acquire(p, prefixlen, found);
1667 if (r != 0)
1668 return r;
1669 }
1670
1671 return 0;
1672}
4f5f911e
LP		 1673
1674Link* manager_find_uplink(Manager *m, Link *exclude) {
1675 _cleanup_free_ struct local_address *gateways = NULL;
1676 int n, i;
1677
1678 assert(m);
1679
1680 /* Looks for a suitable "uplink", via black magic: an
1681 * interface that is up and where the default route with the
1682 * highest priority points to. */
1683
1684 n = local_gateways(m->rtnl, 0, AF_UNSPEC, &gateways);
1685 if (n < 0) {
1686 log_warning_errno(n, "Failed to determine list of default gateways: %m");
1687 return NULL;
1688 }
1689
1690 for (i = 0; i < n; i++) {
1691 Link *link;
1692
1693 link = hashmap_get(m->links, INT_TO_PTR(gateways[i].ifindex));
1694 if (!link) {
c2c940bd 1695 log_debug("Weird, found a gateway for a link we don't know. Ignoring.");
4f5f911e
LP		 1696 continue;
1697 }
1698
1699 if (link == exclude)
1700 continue;
1701
1702 if (link->operstate < LINK_OPERSTATE_ROUTABLE)
1703 continue;
1704
1705 return link;
1706 }
1707
1708 return NULL;
1709}
84de38c5
TG		 1710
1711void manager_dirty(Manager *manager) {
1712 assert(manager);
1713
1714 /* the serialized state in /run is no longer up-to-date */
1715 manager->dirty = true;
1716}
59eb33e0
MP		 1717
1718static int set_hostname_handler(sd_bus_message *m, void *userdata, sd_bus_error *ret_error) {
1719 Manager *manager = userdata;
1720 const sd_bus_error *e;
1721
1722 assert(m);
1723 assert(manager);
1724
1725 e = sd_bus_message_get_error(m);
1726 if (e)
1727 log_warning_errno(sd_bus_error_get_errno(e), "Could not set hostname: %s", e->message);
1728
1729 return 1;
1730}
1731
1732int manager_set_hostname(Manager *m, const char *hostname) {
1733 int r;
1734
1735 log_debug("Setting transient hostname: '%s'", strna(hostname));
d7afd945 1736
7901cea1
MP		 1737 if (free_and_strdup(&m->dynamic_hostname, hostname) < 0)
1738 return log_oom();
59eb33e0 1739
d7afd945 1740 if (!m->bus || sd_bus_is_ready(m->bus) <= 0) {
e0d95f03 1741 log_debug("Not connected to system bus, setting hostname later.");
59eb33e0
MP		 1742 return 0;
1743 }
1744
1745 r = sd_bus_call_method_async(
1746 m->bus,
1747 NULL,
1748 "org.freedesktop.hostname1",
1749 "/org/freedesktop/hostname1",
1750 "org.freedesktop.hostname1",
1751 "SetHostname",
1752 set_hostname_handler,
1753 m,
1754 "sb",
1755 hostname,
1756 false);
1757
1758 if (r < 0)
1759 return log_error_errno(r, "Could not set transient hostname: %m");
1760
1761 return 0;
1762}
1763
1764static int set_timezone_handler(sd_bus_message *m, void *userdata, sd_bus_error *ret_error) {
1765 Manager *manager = userdata;
1766 const sd_bus_error *e;
1767
1768 assert(m);
1769 assert(manager);
1770
1771 e = sd_bus_message_get_error(m);
1772 if (e)
1773 log_warning_errno(sd_bus_error_get_errno(e), "Could not set timezone: %s", e->message);
1774
1775 return 1;
1776}
1777
1778int manager_set_timezone(Manager *m, const char *tz) {
1779 int r;
1780
1781 assert(m);
1782 assert(tz);
1783
1784 log_debug("Setting system timezone: '%s'", tz);
7901cea1
MP		 1785 if (free_and_strdup(&m->dynamic_timezone, tz) < 0)
1786 return log_oom();
59eb33e0 1787
d7afd945 1788 if (!m->bus || sd_bus_is_ready(m->bus) <= 0) {
e0d95f03 1789 log_debug("Not connected to system bus, setting timezone later.");
59eb33e0
MP		 1790 return 0;
1791 }
1792
1793 r = sd_bus_call_method_async(
1794 m->bus,
1795 NULL,
1796 "org.freedesktop.timedate1",
1797 "/org/freedesktop/timedate1",
1798 "org.freedesktop.timedate1",
1799 "SetTimezone",
1800 set_timezone_handler,
1801 m,
1802 "sb",
1803 tz,
1804 false);
1805 if (r < 0)
1806 return log_error_errno(r, "Could not set timezone: %m");
1807
1808 return 0;
1809}
27dfc982
YW		 1810
1811int manager_request_product_uuid(Manager *m, Link *link) {
1812 int r;
1813
1814 assert(m);
1815
1816 if (m->has_product_uuid)
1817 return 0;
1818
1819 log_debug("Requesting product UUID");
1820
1821 if (link) {
1822 DUID *duid;
1823
1824 assert_se(duid = link_get_duid(link));
1825
1826 r = set_ensure_allocated(&m->links_requesting_uuid, NULL);
1827 if (r < 0)
1828 return log_oom();
1829
1830 r = set_ensure_allocated(&m->duids_requesting_uuid, NULL);
1831 if (r < 0)
1832 return log_oom();
1833
1834 r = set_put(m->links_requesting_uuid, link);
1835 if (r < 0)
1836 return log_oom();
1837
1838 r = set_put(m->duids_requesting_uuid, duid);
1839 if (r < 0)
1840 return log_oom();
1841 }
1842
1843 if (!m->bus || sd_bus_is_ready(m->bus) <= 0) {
1844 log_debug("Not connected to system bus, requesting product UUID later.");
1845 return 0;
1846 }
1847
1848 r = sd_bus_call_method_async(
1849 m->bus,
1850 NULL,
1851 "org.freedesktop.hostname1",
1852 "/org/freedesktop/hostname1",
1853 "org.freedesktop.hostname1",
1854 "GetProductUUID",
1855 get_product_uuid_handler,
1856 m,
1857 "b",
1858 false);
1859 if (r < 0)
1860 return log_warning_errno(r, "Failed to get product UUID: %m");
1861
1862 return 0;
1863}
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