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network: request product UUID when DUIDType=uuid but DUIDRawData= is not set
[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"
482d1aeb 15#include "dns-domain.h"
3ffd4af2 16#include "fd-util.h"
0d39fa9c 17#include "fileio.h"
07630cea 18#include "libudev-private.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"
25#include "udev-util.h"
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
d4e9e574 155 r = bus_request_name_async_may_reload_dbus(m->bus, NULL, "org.freedesktop.network1", 0, 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
5fae368b
TG		 188static int manager_udev_process_link(Manager *m, struct udev_device *device) {
189 Link *link = NULL;
190 int r, ifindex;
5544ee85 191
5fae368b
TG		 192 assert(m);
193 assert(device);
5544ee85 194
5fae368b
TG		 195 if (!streq_ptr(udev_device_get_action(device), "add"))
196 return 0;
5544ee85 197
5fae368b
TG		 198 ifindex = udev_device_get_ifindex(device);
199 if (ifindex <= 0) {
2f3cf1f9 200 log_debug("Ignoring udev ADD event for device with invalid ifindex");
5fae368b 201 return 0;
5544ee85
TG		 202 }
203
5fae368b
TG		 204 r = link_get(m, ifindex, &link);
205 if (r == -ENODEV)
206 return 0;
207 else if (r < 0)
f579559b
TG		 208 return r;
209
5fae368b 210 r = link_initialized(link, device);
44de0efc
LP		 211 if (r < 0)
212 return r;
213
5fae368b
TG		 214 return 0;
215}
be660c37 216
5fae368b
TG		 217static int manager_dispatch_link_udev(sd_event_source *source, int fd, uint32_t revents, void *userdata) {
218 Manager *m = userdata;
219 struct udev_monitor *monitor = m->udev_monitor;
8e766630 220 _cleanup_(udev_device_unrefp) struct udev_device *device = NULL;
f579559b 221
5fae368b
TG		 222 device = udev_monitor_receive_device(monitor);
223 if (!device)
02b59d57
TG		 224 return -ENOMEM;
225
e1694a75
YW		 226 (void) manager_udev_process_link(m, device);
227
f579559b
TG		 228 return 0;
229}
230
5fae368b
TG		 231static int manager_connect_udev(Manager *m) {
232 int r;
f579559b 233
5fae368b
TG		 234 /* udev does not initialize devices inside containers,
235 * so we rely on them being already initialized before
236 * entering the container */
75f86906 237 if (detect_container() > 0)
5fae368b 238 return 0;
f579559b 239
5fae368b
TG		 240 m->udev = udev_new();
241 if (!m->udev)
242 return -ENOMEM;
02b59d57 243
5fae368b
TG		 244 m->udev_monitor = udev_monitor_new_from_netlink(m->udev, "udev");
245 if (!m->udev_monitor)
246 return -ENOMEM;
02b59d57 247
5fae368b 248 r = udev_monitor_filter_add_match_subsystem_devtype(m->udev_monitor, "net", NULL);
02b59d57 249 if (r < 0)
5fae368b 250 return log_error_errno(r, "Could not add udev monitor filter: %m");
02b59d57 251
5fae368b
TG		 252 r = udev_monitor_enable_receiving(m->udev_monitor);
253 if (r < 0) {
254 log_error("Could not enable udev monitor");
02b59d57 255 return r;
667fcc6d 256 }
505f8da7 257
5fae368b
TG		 258 r = sd_event_add_io(m->event,
259 &m->udev_event_source,
260 udev_monitor_get_fd(m->udev_monitor),
261 EPOLLIN, manager_dispatch_link_udev,
262 m);
263 if (r < 0)
667fcc6d 264 return r;
505f8da7 265
5fae368b 266 r = sd_event_source_set_description(m->udev_event_source, "networkd-udev");
505f8da7
TG		 267 if (r < 0)
268 return r;
11a7f229 269
505f8da7
TG		 270 return 0;
271}
f579559b 272
1c8e710c
TG		 273int manager_rtnl_process_route(sd_netlink *rtnl, sd_netlink_message *message, void *userdata) {
274 Manager *m = userdata;
275 Link *link = NULL;
276 uint16_t type;
277 uint32_t ifindex, priority = 0;
983226f3 278 unsigned char protocol, scope, tos, table, rt_type;
1c8e710c
TG		 279 int family;
280 unsigned char dst_prefixlen, src_prefixlen;
281 union in_addr_union dst = {}, gw = {}, src = {}, prefsrc = {};
282 Route *route = NULL;
283 int r;
284
285 assert(rtnl);
286 assert(message);
287 assert(m);
288
289 if (sd_netlink_message_is_error(message)) {
290 r = sd_netlink_message_get_errno(message);
291 if (r < 0)
e1694a75 292 log_warning_errno(r, "rtnl: failed to receive route, ignoring: %m");
1c8e710c
TG		 293
294 return 0;
295 }
296
297 r = sd_netlink_message_get_type(message, &type);
298 if (r < 0) {
e1694a75 299 log_warning_errno(r, "rtnl: could not get message type, ignoring: %m");
1c8e710c 300 return 0;
25a1bffc 301 } else if (!IN_SET(type, RTM_NEWROUTE, RTM_DELROUTE)) {
e1694a75 302 log_warning("rtnl: received unexpected message type when processing route, ignoring");
1c8e710c
TG		 303 return 0;
304 }
305
306 r = sd_netlink_message_read_u32(message, RTA_OIF, &ifindex);
307 if (r == -ENODATA) {
308 log_debug("rtnl: received route without ifindex, ignoring");
309 return 0;
310 } else if (r < 0) {
311 log_warning_errno(r, "rtnl: could not get ifindex from route, ignoring: %m");
312 return 0;
313 } else if (ifindex <= 0) {
314 log_warning("rtnl: received route message with invalid ifindex, ignoring: %d", ifindex);
315 return 0;
316 } else {
317 r = link_get(m, ifindex, &link);
318 if (r < 0 || !link) {
319 /* when enumerating we might be out of sync, but we will
320 * get the route again, so just ignore it */
321 if (!m->enumerating)
322 log_warning("rtnl: received route for nonexistent link (%d), ignoring", ifindex);
323 return 0;
324 }
325 }
326
327 r = sd_rtnl_message_route_get_family(message, &family);
328 if (r < 0 || !IN_SET(family, AF_INET, AF_INET6)) {
e1694a75 329 log_link_warning(link, "rtnl: received address with invalid family, ignoring");
1c8e710c
TG		 330 return 0;
331 }
332
333 r = sd_rtnl_message_route_get_protocol(message, &protocol);
334 if (r < 0) {
335 log_warning_errno(r, "rtnl: could not get route protocol: %m");
336 return 0;
337 }
338
339 switch (family) {
340 case AF_INET:
341 r = sd_netlink_message_read_in_addr(message, RTA_DST, &dst.in);
342 if (r < 0 && r != -ENODATA) {
343 log_link_warning_errno(link, r, "rtnl: received route without valid destination, ignoring: %m");
344 return 0;
345 }
346
347 r = sd_netlink_message_read_in_addr(message, RTA_GATEWAY, &gw.in);
348 if (r < 0 && r != -ENODATA) {
349 log_link_warning_errno(link, r, "rtnl: received route with invalid gateway, ignoring: %m");
350 return 0;
351 }
352
353 r = sd_netlink_message_read_in_addr(message, RTA_SRC, &src.in);
354 if (r < 0 && r != -ENODATA) {
355 log_link_warning_errno(link, r, "rtnl: received route with invalid source, ignoring: %m");
356 return 0;
357 }
358
359 r = sd_netlink_message_read_in_addr(message, RTA_PREFSRC, &prefsrc.in);
360 if (r < 0 && r != -ENODATA) {
361 log_link_warning_errno(link, r, "rtnl: received route with invalid preferred source, ignoring: %m");
362 return 0;
363 }
364
365 break;
366
367 case AF_INET6:
368 r = sd_netlink_message_read_in6_addr(message, RTA_DST, &dst.in6);
369 if (r < 0 && r != -ENODATA) {
370 log_link_warning_errno(link, r, "rtnl: received route without valid destination, ignoring: %m");
371 return 0;
372 }
373
374 r = sd_netlink_message_read_in6_addr(message, RTA_GATEWAY, &gw.in6);
375 if (r < 0 && r != -ENODATA) {
376 log_link_warning_errno(link, r, "rtnl: received route with invalid gateway, ignoring: %m");
377 return 0;
378 }
379
380 r = sd_netlink_message_read_in6_addr(message, RTA_SRC, &src.in6);
381 if (r < 0 && r != -ENODATA) {
382 log_link_warning_errno(link, r, "rtnl: received route with invalid source, ignoring: %m");
383 return 0;
384 }
385
386 r = sd_netlink_message_read_in6_addr(message, RTA_PREFSRC, &prefsrc.in6);
387 if (r < 0 && r != -ENODATA) {
388 log_link_warning_errno(link, r, "rtnl: received route with invalid preferred source, ignoring: %m");
389 return 0;
390 }
391
392 break;
393
394 default:
74dead34 395 assert_not_reached("Received unsupported address family");
1c8e710c
TG		 396 return 0;
397 }
398
399 r = sd_rtnl_message_route_get_dst_prefixlen(message, &dst_prefixlen);
400 if (r < 0) {
401 log_link_warning_errno(link, r, "rtnl: received route with invalid destination prefixlen, ignoring: %m");
402 return 0;
403 }
404
405 r = sd_rtnl_message_route_get_src_prefixlen(message, &src_prefixlen);
406 if (r < 0) {
407 log_link_warning_errno(link, r, "rtnl: received route with invalid source prefixlen, ignoring: %m");
408 return 0;
409 }
410
411 r = sd_rtnl_message_route_get_scope(message, &scope);
412 if (r < 0) {
413 log_link_warning_errno(link, r, "rtnl: received route with invalid scope, ignoring: %m");
414 return 0;
415 }
416
417 r = sd_rtnl_message_route_get_tos(message, &tos);
418 if (r < 0) {
419 log_link_warning_errno(link, r, "rtnl: received route with invalid tos, ignoring: %m");
420 return 0;
421 }
422
983226f3
SS		 423 r = sd_rtnl_message_route_get_type(message, &rt_type);
424 if (r < 0) {
425 log_link_warning_errno(link, r, "rtnl: received route with invalid type, ignoring: %m");
426 return 0;
427 }
428
1c8e710c
TG		 429 r = sd_rtnl_message_route_get_table(message, &table);
430 if (r < 0) {
431 log_link_warning_errno(link, r, "rtnl: received route with invalid table, ignoring: %m");
432 return 0;
433 }
434
435 r = sd_netlink_message_read_u32(message, RTA_PRIORITY, &priority);
436 if (r < 0 && r != -ENODATA) {
437 log_link_warning_errno(link, r, "rtnl: received route with invalid priority, ignoring: %m");
438 return 0;
439 }
440
e1694a75 441 (void) route_get(link, family, &dst, dst_prefixlen, tos, priority, table, &route);
1c8e710c
TG		 442
443 switch (type) {
444 case RTM_NEWROUTE:
445 if (!route) {
446 /* A route appeared that we did not request */
447 r = route_add_foreign(link, family, &dst, dst_prefixlen, tos, priority, table, &route);
e1694a75
YW		 448 if (r < 0) {
449 log_link_warning_errno(link, r, "Failed to add route, ignoring: %m");
1c8e710c 450 return 0;
e1694a75 451 }
1c8e710c
TG		 452 }
453
bbd15900 454 route_update(route, &src, src_prefixlen, &gw, &prefsrc, scope, protocol, rt_type);
1c8e710c
TG		 455
456 break;
457
458 case RTM_DELROUTE:
b9642f41 459 route_free(route);
1c8e710c 460 break;
b9642f41 461
1c8e710c
TG		 462 default:
463 assert_not_reached("Received invalid RTNL message type");
464 }
465
466 return 1;
467}
468
200a0868
TG		 469int manager_rtnl_process_address(sd_netlink *rtnl, sd_netlink_message *message, void *userdata) {
470 Manager *m = userdata;
471 Link *link = NULL;
472 uint16_t type;
200a0868 473 unsigned char flags;
054f0db4
TG		 474 int family;
475 unsigned char prefixlen;
476 unsigned char scope;
477 union in_addr_union in_addr;
478 struct ifa_cacheinfo cinfo;
479 Address *address = NULL;
200a0868
TG		 480 char buf[INET6_ADDRSTRLEN], valid_buf[FORMAT_TIMESPAN_MAX];
481 const char *valid_str = NULL;
482 int r, ifindex;
483
484 assert(rtnl);
485 assert(message);
486 assert(m);
487
488 if (sd_netlink_message_is_error(message)) {
489 r = sd_netlink_message_get_errno(message);
490 if (r < 0)
e1694a75 491 log_warning_errno(r, "rtnl: failed to receive address, ignoring: %m");
200a0868
TG		 492
493 return 0;
494 }
495
496 r = sd_netlink_message_get_type(message, &type);
497 if (r < 0) {
e1694a75 498 log_warning_errno(r, "rtnl: could not get message type, ignoring: %m");
200a0868 499 return 0;
25a1bffc 500 } else if (!IN_SET(type, RTM_NEWADDR, RTM_DELADDR)) {
e1694a75 501 log_warning("rtnl: received unexpected message type when processing address, ignoring");
200a0868
TG		 502 return 0;
503 }
504
505 r = sd_rtnl_message_addr_get_ifindex(message, &ifindex);
506 if (r < 0) {
e1694a75 507 log_warning_errno(r, "rtnl: could not get ifindex from address, ignoring: %m");
200a0868
TG		 508 return 0;
509 } else if (ifindex <= 0) {
e1694a75 510 log_warning("rtnl: received address message with invalid ifindex, ignoring: %d", ifindex);
200a0868
TG		 511 return 0;
512 } else {
513 r = link_get(m, ifindex, &link);
514 if (r < 0 || !link) {
515 /* when enumerating we might be out of sync, but we will
516 * get the address again, so just ignore it */
517 if (!m->enumerating)
518 log_warning("rtnl: received address for nonexistent link (%d), ignoring", ifindex);
519 return 0;
520 }
521 }
522
054f0db4
TG		 523 r = sd_rtnl_message_addr_get_family(message, &family);
524 if (r < 0 || !IN_SET(family, AF_INET, AF_INET6)) {
e1694a75 525 log_link_warning(link, "rtnl: received address with invalid family, ignoring");
200a0868
TG		 526 return 0;
527 }
528
054f0db4 529 r = sd_rtnl_message_addr_get_prefixlen(message, &prefixlen);
200a0868
TG		 530 if (r < 0) {
531 log_link_warning_errno(link, r, "rtnl: received address with invalid prefixlen, ignoring: %m");
532 return 0;
533 }
534
054f0db4 535 r = sd_rtnl_message_addr_get_scope(message, &scope);
200a0868
TG		 536 if (r < 0) {
537 log_link_warning_errno(link, r, "rtnl: received address with invalid scope, ignoring: %m");
538 return 0;
539 }
540
541 r = sd_rtnl_message_addr_get_flags(message, &flags);
542 if (r < 0) {
543 log_link_warning_errno(link, r, "rtnl: received address with invalid flags, ignoring: %m");
544 return 0;
545 }
200a0868 546
054f0db4 547 switch (family) {
200a0868 548 case AF_INET:
054f0db4 549 r = sd_netlink_message_read_in_addr(message, IFA_LOCAL, &in_addr.in);
200a0868
TG		 550 if (r < 0) {
551 log_link_warning_errno(link, r, "rtnl: received address without valid address, ignoring: %m");
552 return 0;
553 }
554
555 break;
556
557 case AF_INET6:
054f0db4 558 r = sd_netlink_message_read_in6_addr(message, IFA_ADDRESS, &in_addr.in6);
200a0868
TG		 559 if (r < 0) {
560 log_link_warning_errno(link, r, "rtnl: received address without valid address, ignoring: %m");
561 return 0;
562 }
563
564 break;
565
566 default:
e1694a75 567 assert_not_reached("Received unsupported address family");
200a0868
TG		 568 }
569
054f0db4 570 if (!inet_ntop(family, &in_addr, buf, INET6_ADDRSTRLEN)) {
e1694a75 571 log_link_warning(link, "Could not print address, ignoring");
200a0868
TG		 572 return 0;
573 }
574
054f0db4 575 r = sd_netlink_message_read_cache_info(message, IFA_CACHEINFO, &cinfo);
e1694a75
YW		 576 if (r < 0 && r != -ENODATA) {
577 log_link_warning_errno(link, r, "rtnl: cannot get IFA_CACHEINFO attribute, ignoring: %m");
578 return 0;
579 } else if (r >= 0) {
4058d339 580 if (cinfo.ifa_valid != CACHE_INFO_INFINITY_LIFE_TIME)
200a0868 581 valid_str = format_timespan(valid_buf, FORMAT_TIMESPAN_MAX,
054f0db4 582 cinfo.ifa_valid * USEC_PER_SEC,
200a0868
TG		 583 USEC_PER_SEC);
584 }
585
e1694a75 586 (void) address_get(link, family, &in_addr, prefixlen, &address);
200a0868
TG		 587
588 switch (type) {
589 case RTM_NEWADDR:
36c32f61 590 if (address)
4058d339 591 log_link_debug(link, "Updating address: %s/%u (valid %s%s)", buf, prefixlen,
87e4e28d 592 valid_str ? "for " : "forever", strempty(valid_str));
36c32f61 593 else {
adda1ed9
TG		 594 /* An address appeared that we did not request */
595 r = address_add_foreign(link, family, &in_addr, prefixlen, &address);
cf1d700d 596 if (r < 0) {
e1694a75 597 log_link_warning_errno(link, r, "Failed to add address %s/%u, ignoring: %m", buf, prefixlen);
cf1d700d
TG		 598 return 0;
599 } else
4058d339 600 log_link_debug(link, "Adding address: %s/%u (valid %s%s)", buf, prefixlen,
87e4e28d 601 valid_str ? "for " : "forever", strempty(valid_str));
200a0868
TG		 602 }
603
e1694a75
YW		 604 r = address_update(address, flags, scope, &cinfo);
605 if (r < 0) {
606 log_link_warning_errno(link, r, "Failed to update address %s/%u, ignoring: %m", buf, prefixlen);
607 return 0;
608 }
36c32f61 609
200a0868
TG		 610 break;
611
612 case RTM_DELADDR:
613
054f0db4 614 if (address) {
4058d339 615 log_link_debug(link, "Removing address: %s/%u (valid %s%s)", buf, prefixlen,
87e4e28d 616 valid_str ? "for " : "forever", strempty(valid_str));
e1694a75 617 (void) address_drop(address);
200a0868 618 } else
e1694a75 619 log_link_warning(link, "Removing non-existent address: %s/%u (valid %s%s), ignoring", buf, prefixlen,
87e4e28d 620 valid_str ? "for " : "forever", strempty(valid_str));
200a0868
TG		 621
622 break;
623 default:
624 assert_not_reached("Received invalid RTNL message type");
625 }
626
627 return 1;
628}
629
1c4baffc 630static int manager_rtnl_process_link(sd_netlink *rtnl, sd_netlink_message *message, void *userdata) {
505f8da7
TG		 631 Manager *m = userdata;
632 Link *link = NULL;
4d473d5d 633 NetDev *netdev = NULL;
f2236469 634 uint16_t type;
ca4e095a 635 const char *name;
505f8da7 636 int r, ifindex;
f579559b 637
505f8da7
TG		 638 assert(rtnl);
639 assert(message);
f579559b
TG		 640 assert(m);
641
1c4baffc
TG		 642 if (sd_netlink_message_is_error(message)) {
643 r = sd_netlink_message_get_errno(message);
45af44d4 644 if (r < 0)
e1694a75 645 log_warning_errno(r, "rtnl: Could not receive link, ignoring: %m");
45af44d4
TG		 646
647 return 0;
648 }
649
1c4baffc 650 r = sd_netlink_message_get_type(message, &type);
f2236469 651 if (r < 0) {
e1694a75 652 log_warning_errno(r, "rtnl: Could not get message type, ignoring: %m");
f2236469 653 return 0;
25a1bffc 654 } else if (!IN_SET(type, RTM_NEWLINK, RTM_DELLINK)) {
e1694a75 655 log_warning("rtnl: Received unexpected message type when processing link, ignoring");
cdfee943 656 return 0;
f2236469
TG		 657 }
658
505f8da7 659 r = sd_rtnl_message_link_get_ifindex(message, &ifindex);
45af44d4 660 if (r < 0) {
e1694a75 661 log_warning_errno(r, "rtnl: Could not get ifindex from link, ignoring: %m");
45af44d4
TG		 662 return 0;
663 } else if (ifindex <= 0) {
e1694a75 664 log_warning("rtnl: received link message with invalid ifindex %d, ignoring", ifindex);
505f8da7 665 return 0;
a0db8e46 666 }
f579559b 667
1c4baffc 668 r = sd_netlink_message_read_string(message, IFLA_IFNAME, &name);
45af44d4 669 if (r < 0) {
e1694a75 670 log_warning_errno(r, "rtnl: Received link message without ifname, ignoring: %m");
4d473d5d 671 return 0;
a0db8e46
ZJS		 672 }
673
674 (void) link_get(m, ifindex, &link);
675 (void) netdev_get(m, name, &netdev);
4d473d5d
TG		 676
677 switch (type) {
678 case RTM_NEWLINK:
679 if (!link) {
680 /* link is new, so add it */
681 r = link_add(m, message, &link);
682 if (r < 0) {
e1694a75 683 log_warning_errno(r, "Could not add new link, ignoring: %m");
4d473d5d
TG		 684 return 0;
685 }
686 }
687
688 if (netdev) {
689 /* netdev exists, so make sure the ifindex matches */
505f8da7
TG		 690 r = netdev_set_ifindex(netdev, message);
691 if (r < 0) {
e1694a75 692 log_warning_errno(r, "Could not set ifindex on netdev, ignoring: %m");
505f8da7
TG		 693 return 0;
694 }
695 }
e1202047 696
f2236469 697 r = link_update(link, message);
e1694a75
YW		 698 if (r < 0) {
699 log_warning_errno(r, "Could not update link, ignoring: %m");
f2236469 700 return 0;
e1694a75 701 }
4d473d5d
TG		 702
703 break;
704
705 case RTM_DELLINK:
706 link_drop(link);
707 netdev_drop(netdev);
708
709 break;
710
711 default:
712 assert_not_reached("Received invalid RTNL message type.");
f2236469 713 }
505f8da7
TG		 714
715 return 1;
716}
717
bce67bbe
SS		 718int manager_rtnl_process_rule(sd_netlink *rtnl, sd_netlink_message *message, void *userdata) {
719 uint8_t tos = 0, to_prefixlen = 0, from_prefixlen = 0;
36e6e28b 720 union in_addr_union to = {}, from = {};
bce67bbe 721 RoutingPolicyRule *rule = NULL;
bce67bbe 722 uint32_t fwmark = 0, table = 0;
36e6e28b 723 char *iif = NULL, *oif = NULL;
bce67bbe
SS		 724 Manager *m = userdata;
725 uint16_t type;
726 int family;
727 int r;
728
729 assert(rtnl);
730 assert(message);
731 assert(m);
732
733 if (sd_netlink_message_is_error(message)) {
734 r = sd_netlink_message_get_errno(message);
735 if (r < 0)
e1694a75 736 log_warning_errno(r, "rtnl: failed to receive rule, ignoring: %m");
bce67bbe
SS		 737
738 return 0;
739 }
740
741 r = sd_netlink_message_get_type(message, &type);
742 if (r < 0) {
e1694a75 743 log_warning_errno(r, "rtnl: could not get message type, ignoring: %m");
bce67bbe
SS		 744 return 0;
745 } else if (!IN_SET(type, RTM_NEWRULE, RTM_DELRULE)) {
e1694a75 746 log_warning("rtnl: received unexpected message type '%u' when processing rule, ignoring", type);
bce67bbe
SS		 747 return 0;
748 }
749
750 r = sd_rtnl_message_get_family(message, &family);
615ded62 751 if (r < 0) {
e1694a75 752 log_warning_errno(r, "rtnl: could not get rule family, ignoring: %m");
615ded62
YW		 753 return 0;
754 } else if (!IN_SET(family, AF_INET, AF_INET6)) {
e1694a75 755 log_debug("rtnl: received address with invalid family %u, ignoring", family);
bce67bbe
SS		 756 return 0;
757 }
758
759 switch (family) {
760 case AF_INET:
761 r = sd_netlink_message_read_in_addr(message, FRA_SRC, &from.in);
e1694a75
YW		 762 if (r < 0 && r != -ENODATA) {
763 log_warning_errno(r, "rtnl: could not get FRA_SRC attribute, ignoring: %m");
764 return 0;
765 } else if (r >= 0) {
bce67bbe 766 r = sd_rtnl_message_routing_policy_rule_get_rtm_src_prefixlen(message, &from_prefixlen);
e1694a75 767 if (r < 0) {
3fe91079 768 log_warning_errno(r, "rtnl: failed to retrieve rule from prefix length, ignoring: %m");
e1694a75
YW		 769 return 0;
770 }
bce67bbe
SS		 771 }
772
773 r = sd_netlink_message_read_in_addr(message, FRA_DST, &to.in);
e1694a75
YW		 774 if (r < 0 && r != -ENODATA) {
775 log_warning_errno(r, "rtnl: could not get FRA_DST attribute, ignoring: %m");
776 return 0;
777 } else if (r >= 0) {
bce67bbe 778 r = sd_rtnl_message_routing_policy_rule_get_rtm_dst_prefixlen(message, &to_prefixlen);
e1694a75 779 if (r < 0) {
3fe91079 780 log_warning_errno(r, "rtnl: failed to retrieve rule to prefix length, ignoring: %m");
e1694a75
YW		 781 return 0;
782 }
bce67bbe
SS		 783 }
784
785 break;
786
787 case AF_INET6:
788 r = sd_netlink_message_read_in6_addr(message, FRA_SRC, &from.in6);
e1694a75
YW		 789 if (r < 0 && r != -ENODATA) {
790 log_warning_errno(r, "rtnl: could not get FRA_SRC attribute, ignoring: %m");
791 return 0;
792 } else if (r >= 0) {
bce67bbe 793 r = sd_rtnl_message_routing_policy_rule_get_rtm_src_prefixlen(message, &from_prefixlen);
e1694a75 794 if (r < 0) {
3fe91079 795 log_warning_errno(r, "rtnl: failed to retrieve rule from prefix length, ignoring: %m");
e1694a75
YW		 796 return 0;
797 }
bce67bbe
SS		 798 }
799
800 r = sd_netlink_message_read_in6_addr(message, FRA_DST, &to.in6);
e1694a75
YW		 801 if (r < 0 && r != -ENODATA) {
802 log_warning_errno(r, "rtnl: could not get FRA_DST attribute, ignoring: %m");
803 return 0;
804 } else if (r >= 0) {
bce67bbe 805 r = sd_rtnl_message_routing_policy_rule_get_rtm_dst_prefixlen(message, &to_prefixlen);
e1694a75 806 if (r < 0) {
3fe91079 807 log_warning_errno(r, "rtnl: failed to retrieve rule to prefix length, ignoring: %m");
e1694a75
YW		 808 return 0;
809 }
bce67bbe
SS		 810 }
811
812 break;
813
814 default:
74dead34 815 assert_not_reached("Received unsupported address family");
bce67bbe
SS		 816 }
817
818 if (from_prefixlen == 0 && to_prefixlen == 0)
819 return 0;
820
e1694a75
YW		 821 r = sd_netlink_message_read_u32(message, FRA_FWMARK, &fwmark);
822 if (r < 0 && r != -ENODATA) {
823 log_warning_errno(r, "rtnl: could not get FRA_FWMARK attribute, ignoring: %m");
824 return 0;
825 }
826
827 r = sd_netlink_message_read_u32(message, FRA_TABLE, &table);
828 if (r < 0 && r != -ENODATA) {
829 log_warning_errno(r, "rtnl: could not get FRA_TABLE attribute, ignoring: %m");
830 return 0;
831 }
832
833 r = sd_rtnl_message_routing_policy_rule_get_tos(message, &tos);
834 if (r < 0 && r != -ENODATA) {
835 log_warning_errno(r, "rtnl: could not get ip rule TOS, ignoring: %m");
836 return 0;
837 }
838
839 r = sd_netlink_message_read_string(message, FRA_IIFNAME, (const char **) &iif);
840 if (r < 0 && r != -ENODATA) {
841 log_warning_errno(r, "rtnl: could not get FRA_IIFNAME attribute, ignoring: %m");
842 return 0;
843 }
844
845 r = sd_netlink_message_read_string(message, FRA_OIFNAME, (const char **) &oif);
846 if (r < 0 && r != -ENODATA) {
847 log_warning_errno(r, "rtnl: could not get FRA_OIFNAME attribute, ignoring: %m");
848 return 0;
849 }
bce67bbe 850
762e2659 851 (void) routing_policy_rule_get(m, family, &from, from_prefixlen, &to, to_prefixlen, tos, fwmark, table, iif, oif, &rule);
bce67bbe
SS		 852
853 switch (type) {
854 case RTM_NEWRULE:
508f63b4 855 if (!rule) {
762e2659 856 r = routing_policy_rule_add_foreign(m, family, &from, from_prefixlen, &to, to_prefixlen, tos, fwmark, table, iif, oif, &rule);
bce67bbe 857 if (r < 0) {
e1694a75 858 log_warning_errno(r, "Could not add rule, ignoring: %m");
bce67bbe
SS		 859 return 0;
860 }
861 }
862 break;
863 case RTM_DELRULE:
864 routing_policy_rule_free(rule);
865
866 break;
867
868 default:
869 assert_not_reached("Received invalid RTNL message type");
870 }
871
872 return 1;
873}
874
5fae368b
TG		 875static int systemd_netlink_fd(void) {
876 int n, fd, rtnl_fd = -EINVAL;
877
878 n = sd_listen_fds(true);
879 if (n <= 0)
880 return -EINVAL;
881
882 for (fd = SD_LISTEN_FDS_START; fd < SD_LISTEN_FDS_START + n; fd ++) {
883 if (sd_is_socket(fd, AF_NETLINK, SOCK_RAW, -1) > 0) {
884 if (rtnl_fd >= 0)
885 return -EINVAL;
886
887 rtnl_fd = fd;
888 }
889 }
890
891 return rtnl_fd;
892}
893
05d0c2e3
JT		 894static int manager_connect_genl(Manager *m) {
895 int r;
896
897 assert(m);
898
899 r = sd_genl_socket_open(&m->genl);
900 if (r < 0)
901 return r;
902
903 r = sd_netlink_inc_rcvbuf(m->genl, RCVBUF_SIZE);
904 if (r < 0)
905 return r;
906
907 r = sd_netlink_attach_event(m->genl, m->event, 0);
908 if (r < 0)
909 return r;
910
911 return 0;
912}
913
5fae368b
TG		 914static int manager_connect_rtnl(Manager *m) {
915 int fd, r;
505f8da7
TG		 916
917 assert(m);
505f8da7 918
5fae368b
TG		 919 fd = systemd_netlink_fd();
920 if (fd < 0)
1c4baffc 921 r = sd_netlink_open(&m->rtnl);
5fae368b 922 else
1c4baffc 923 r = sd_netlink_open_fd(&m->rtnl, fd);
505f8da7
TG		 924 if (r < 0)
925 return r;
926
1c4baffc 927 r = sd_netlink_inc_rcvbuf(m->rtnl, RCVBUF_SIZE);
f579559b 928 if (r < 0)
bf5332d2 929 return r;
f579559b 930
1c4baffc 931 r = sd_netlink_attach_event(m->rtnl, m->event, 0);
505f8da7
TG		 932 if (r < 0)
933 return r;
f579559b 934
1c4baffc 935 r = sd_netlink_add_match(m->rtnl, RTM_NEWLINK, &manager_rtnl_process_link, m);
5fae368b
TG		 936 if (r < 0)
937 return r;
505f8da7 938
1c4baffc 939 r = sd_netlink_add_match(m->rtnl, RTM_DELLINK, &manager_rtnl_process_link, m);
5fae368b
TG		 940 if (r < 0)
941 return r;
45af44d4 942
200a0868 943 r = sd_netlink_add_match(m->rtnl, RTM_NEWADDR, &manager_rtnl_process_address, m);
5fae368b
TG		 944 if (r < 0)
945 return r;
946
200a0868 947 r = sd_netlink_add_match(m->rtnl, RTM_DELADDR, &manager_rtnl_process_address, m);
5fae368b
TG		 948 if (r < 0)
949 return r;
950
1c8e710c
TG		 951 r = sd_netlink_add_match(m->rtnl, RTM_NEWROUTE, &manager_rtnl_process_route, m);
952 if (r < 0)
953 return r;
954
955 r = sd_netlink_add_match(m->rtnl, RTM_DELROUTE, &manager_rtnl_process_route, m);
956 if (r < 0)
957 return r;
958
bce67bbe
SS		 959 r = sd_netlink_add_match(m->rtnl, RTM_NEWRULE, &manager_rtnl_process_rule, m);
960 if (r < 0)
961 return r;
962
963 r = sd_netlink_add_match(m->rtnl, RTM_DELRULE, &manager_rtnl_process_rule, m);
964 if (r < 0)
965 return r;
966
5fae368b 967 return 0;
45af44d4 968}
505f8da7 969
5512a963 970static int ordered_set_put_in_addr_data(OrderedSet *s, const struct in_addr_data *address) {
84de38c5
TG		 971 char *p;
972 int r;
973
974 assert(s);
5512a963
LP		 975 assert(address);
976
977 r = in_addr_to_string(address->family, &address->address, &p);
978 if (r < 0)
979 return r;
980
981 r = ordered_set_consume(s, p);
982 if (r == -EEXIST)
983 return 0;
984
985 return r;
986}
987
988static int ordered_set_put_in_addr_datav(OrderedSet *s, const struct in_addr_data *addresses, unsigned n) {
989 int r, c = 0;
990 unsigned i;
991
992 assert(s);
993 assert(addresses || n == 0);
994
995 for (i = 0; i < n; i++) {
996 r = ordered_set_put_in_addr_data(s, addresses+i);
997 if (r < 0)
998 return r;
999
1000 c += r;
1001 }
1002
1003 return c;
1004}
1005
1006static int ordered_set_put_in4_addr(OrderedSet *s, const struct in_addr *address) {
1007 char *p;
1008 int r;
1009
1010 assert(s);
1011 assert(address);
84de38c5
TG		 1012
1013 r = in_addr_to_string(AF_INET, (const union in_addr_union*) address, &p);
1014 if (r < 0)
1015 return r;
1016
00616955 1017 r = ordered_set_consume(s, p);
84de38c5
TG		 1018 if (r == -EEXIST)
1019 return 0;
1020
1021 return r;
1022}
1023
5512a963
LP		 1024static int ordered_set_put_in4_addrv(OrderedSet *s, const struct in_addr *addresses, unsigned n) {
1025 int r, c = 0;
1026 unsigned i;
84de38c5
TG		 1027
1028 assert(s);
5512a963 1029 assert(n == 0 || addresses);
84de38c5
TG		 1030
1031 for (i = 0; i < n; i++) {
5512a963 1032 r = ordered_set_put_in4_addr(s, addresses+i);
84de38c5
TG		 1033 if (r < 0)
1034 return r;
1035
1036 c += r;
1037 }
1038
1039 return c;
1040}
1041
00616955 1042static void print_string_set(FILE *f, const char *field, OrderedSet *s) {
84de38c5
TG		 1043 bool space = false;
1044 Iterator i;
1045 char *p;
1046
00616955 1047 if (ordered_set_isempty(s))
84de38c5
TG		 1048 return;
1049
0d536673 1050 fputs(field, f);
84de38c5 1051
d390f8ef
LP		 1052 ORDERED_SET_FOREACH(p, s, i)
1053 fputs_with_space(f, p, NULL, &space);
1054
0d536673 1055 fputc('\n', f);
84de38c5
TG		 1056}
1057
1058static int manager_save(Manager *m) {
00616955 1059 _cleanup_ordered_set_free_free_ OrderedSet *dns = NULL, *ntp = NULL, *search_domains = NULL, *route_domains = NULL;
84de38c5
TG		 1060 Link *link;
1061 Iterator i;
1062 _cleanup_free_ char *temp_path = NULL;
1063 _cleanup_fclose_ FILE *f = NULL;
1064 LinkOperationalState operstate = LINK_OPERSTATE_OFF;
1065 const char *operstate_str;
1066 int r;
1067
1068 assert(m);
1069 assert(m->state_file);
1070
1071 /* We add all NTP and DNS server to a set, to filter out duplicates */
00616955 1072 dns = ordered_set_new(&string_hash_ops);
84de38c5
TG		 1073 if (!dns)
1074 return -ENOMEM;
1075
00616955 1076 ntp = ordered_set_new(&string_hash_ops);
84de38c5
TG		 1077 if (!ntp)
1078 return -ENOMEM;
1079
482d1aeb 1080 search_domains = ordered_set_new(&dns_name_hash_ops);
3df9bec5
LP		 1081 if (!search_domains)
1082 return -ENOMEM;
1083
482d1aeb 1084 route_domains = ordered_set_new(&dns_name_hash_ops);
3df9bec5 1085 if (!route_domains)
84de38c5
TG		 1086 return -ENOMEM;
1087
1088 HASHMAP_FOREACH(link, m->links, i) {
1089 if (link->flags & IFF_LOOPBACK)
1090 continue;
1091
1092 if (link->operstate > operstate)
1093 operstate = link->operstate;
1094
1095 if (!link->network)
1096 continue;
1097
1098 /* First add the static configured entries */
5512a963 1099 r = ordered_set_put_in_addr_datav(dns, link->network->dns, link->network->n_dns);
84de38c5
TG		 1100 if (r < 0)
1101 return r;
1102
00616955 1103 r = ordered_set_put_strdupv(ntp, link->network->ntp);
84de38c5
TG		 1104 if (r < 0)
1105 return r;
1106
00616955 1107 r = ordered_set_put_strdupv(search_domains, link->network->search_domains);
3df9bec5
LP		 1108 if (r < 0)
1109 return r;
1110
00616955 1111 r = ordered_set_put_strdupv(route_domains, link->network->route_domains);
84de38c5
TG		 1112 if (r < 0)
1113 return r;
1114
1115 if (!link->dhcp_lease)
1116 continue;
1117
1118 /* Secondly, add the entries acquired via DHCP */
27cb34f5 1119 if (link->network->dhcp_use_dns) {
84de38c5
TG		 1120 const struct in_addr *addresses;
1121
1122 r = sd_dhcp_lease_get_dns(link->dhcp_lease, &addresses);
1123 if (r > 0) {
5512a963 1124 r = ordered_set_put_in4_addrv(dns, addresses, r);
84de38c5
TG		 1125 if (r < 0)
1126 return r;
1127 } else if (r < 0 && r != -ENODATA)
1128 return r;
1129 }
1130
27cb34f5 1131 if (link->network->dhcp_use_ntp) {
84de38c5
TG		 1132 const struct in_addr *addresses;
1133
1134 r = sd_dhcp_lease_get_ntp(link->dhcp_lease, &addresses);
1135 if (r > 0) {
5512a963 1136 r = ordered_set_put_in4_addrv(ntp, addresses, r);
84de38c5
TG		 1137 if (r < 0)
1138 return r;
1139 } else if (r < 0 && r != -ENODATA)
1140 return r;
1141 }
1142
b2a81c0b 1143 if (link->network->dhcp_use_domains != DHCP_USE_DOMAINS_NO) {
84de38c5 1144 const char *domainname;
b85bc551 1145 char **domains = NULL;
84de38c5 1146
b85bc551 1147 OrderedSet *target_domains = (link->network->dhcp_use_domains == DHCP_USE_DOMAINS_YES) ? search_domains : route_domains;
84de38c5
TG		 1148 r = sd_dhcp_lease_get_domainname(link->dhcp_lease, &domainname);
1149 if (r >= 0) {
b85bc551
DW		 1150 r = ordered_set_put_strdup(target_domains, domainname);
1151 if (r < 0)
1152 return r;
1153 } else if (r != -ENODATA)
1154 return r;
b2a81c0b 1155
b85bc551
DW		 1156 r = sd_dhcp_lease_get_search_domains(link->dhcp_lease, &domains);
1157 if (r >= 0) {
1158 r = ordered_set_put_strdupv(target_domains, domains);
84de38c5
TG		 1159 if (r < 0)
1160 return r;
1161 } else if (r != -ENODATA)
1162 return r;
1163 }
1164 }
1165
1166 operstate_str = link_operstate_to_string(operstate);
1167 assert(operstate_str);
1168
1169 r = fopen_temporary(m->state_file, &f, &temp_path);
1170 if (r < 0)
1171 return r;
1172
0d536673 1173 (void) __fsetlocking(f, FSETLOCKING_BYCALLER);
5512a963 1174 (void) fchmod(fileno(f), 0644);
84de38c5
TG		 1175
1176 fprintf(f,
1177 "# This is private data. Do not parse.\n"
1178 "OPER_STATE=%s\n", operstate_str);
1179
1180 print_string_set(f, "DNS=", dns);
1181 print_string_set(f, "NTP=", ntp);
3df9bec5
LP		 1182 print_string_set(f, "DOMAINS=", search_domains);
1183 print_string_set(f, "ROUTE_DOMAINS=", route_domains);
84de38c5 1184
458d8ae3
ZJS		 1185 r = routing_policy_serialize_rules(m->rules, f);
1186 if (r < 0)
1187 goto fail;
bce67bbe 1188
84de38c5
TG		 1189 r = fflush_and_check(f);
1190 if (r < 0)
1191 goto fail;
1192
1193 if (rename(temp_path, m->state_file) < 0) {
1194 r = -errno;
1195 goto fail;
1196 }
1197
1198 if (m->operational_state != operstate) {
1199 m->operational_state = operstate;
1200 r = manager_send_changed(m, "OperationalState", NULL);
1201 if (r < 0)
1202 log_error_errno(r, "Could not emit changed OperationalState: %m");
1203 }
1204
1205 m->dirty = false;
1206
1207 return 0;
1208
1209fail:
1210 (void) unlink(m->state_file);
1211 (void) unlink(temp_path);
1212
1213 return log_error_errno(r, "Failed to save network state to %s: %m", m->state_file);
1214}
1215
1216static int manager_dirty_handler(sd_event_source *s, void *userdata) {
1217 Manager *m = userdata;
1218 Link *link;
1219 Iterator i;
1220 int r;
1221
1222 assert(m);
1223
1224 if (m->dirty)
1225 manager_save(m);
1226
1227 SET_FOREACH(link, m->dirty_links, i) {
1228 r = link_save(link);
1229 if (r >= 0)
1230 link_clean(link);
1231 }
1232
1233 return 1;
1234}
1235
e133b289
PF		 1236Link *manager_dhcp6_prefix_get(Manager *m, struct in6_addr *addr) {
1237 assert_return(m, NULL);
1238 assert_return(m->dhcp6_prefixes, NULL);
1239 assert_return(addr, NULL);
1240
1241 return hashmap_get(m->dhcp6_prefixes, addr);
1242}
1243
9f386c6d
PF		 1244static int dhcp6_route_add_callback(sd_netlink *nl, sd_netlink_message *m,
1245 void *userdata) {
1246 Link *l = userdata;
1247 int r;
1248 union in_addr_union prefix;
1249 _cleanup_free_ char *buf = NULL;
1250
1251 r = sd_netlink_message_get_errno(m);
1252 if (r != 0) {
1253 log_link_debug_errno(l, r, "Received error adding DHCPv6 Prefix Delegation route: %m");
1254 return 0;
1255 }
1256
1257 r = sd_netlink_message_read_in6_addr(m, RTA_DST, &prefix.in6);
1258 if (r < 0) {
1259 log_link_debug_errno(l, r, "Could not read IPv6 address from DHCPv6 Prefix Delegation while adding route: %m");
1260 return 0;
1261 }
1262
1263 (void) in_addr_to_string(AF_INET6, &prefix, &buf);
1264 log_link_debug(l, "Added DHCPv6 Prefix Deleagtion route %s/64",
1265 strnull(buf));
1266
1267 return 0;
1268}
1269
e133b289 1270int manager_dhcp6_prefix_add(Manager *m, struct in6_addr *addr, Link *link) {
9f386c6d
PF		 1271 int r;
1272 Route *route;
1273
e133b289
PF		 1274 assert_return(m, -EINVAL);
1275 assert_return(m->dhcp6_prefixes, -ENODATA);
1276 assert_return(addr, -EINVAL);
1277
9f386c6d
PF		 1278 r = route_add(link, AF_INET6, (union in_addr_union *) addr, 64,
1279 0, 0, 0, &route);
1280 if (r < 0)
1281 return r;
1282
1283 r = route_configure(route, link, dhcp6_route_add_callback);
1284 if (r < 0)
1285 return r;
1286
e133b289
PF		 1287 return hashmap_put(m->dhcp6_prefixes, addr, link);
1288}
1289
9f386c6d
PF		 1290static int dhcp6_route_remove_callback(sd_netlink *nl, sd_netlink_message *m,
1291 void *userdata) {
1292 Link *l = userdata;
1293 int r;
1294 union in_addr_union prefix;
1295 _cleanup_free_ char *buf = NULL;
1296
1297 r = sd_netlink_message_get_errno(m);
1298 if (r != 0) {
1299 log_link_debug_errno(l, r, "Received error on DHCPv6 Prefix Delegation route removal: %m");
1300 return 0;
1301 }
1302
1303 r = sd_netlink_message_read_in6_addr(m, RTA_DST, &prefix.in6);
1304 if (r < 0) {
1305 log_link_debug_errno(l, r, "Could not read IPv6 address from DHCPv6 Prefix Delegation while removing route: %m");
1306 return 0;
1307 }
1308
1309 (void) in_addr_to_string(AF_INET6, &prefix, &buf);
1310 log_link_debug(l, "Removed DHCPv6 Prefix Delegation route %s/64",
1311 strnull(buf));
1312
1313 return 0;
1314}
1315
e133b289
PF		 1316int manager_dhcp6_prefix_remove(Manager *m, struct in6_addr *addr) {
1317 Link *l;
9f386c6d
PF		 1318 int r;
1319 Route *route;
e133b289
PF		 1320
1321 assert_return(m, -EINVAL);
1322 assert_return(m->dhcp6_prefixes, -ENODATA);
1323 assert_return(addr, -EINVAL);
1324
1325 l = hashmap_remove(m->dhcp6_prefixes, addr);
1326 if (!l)
1327 return -EINVAL;
1328
1329 (void) sd_radv_remove_prefix(l->radv, addr, 64);
9f386c6d
PF		 1330 r = route_get(l, AF_INET6, (union in_addr_union *) addr, 64,
1331 0, 0, 0, &route);
1332 if (r >= 0)
1333 (void) route_remove(route, l, dhcp6_route_remove_callback);
e133b289
PF		 1334
1335 return 0;
1336}
1337
1338int manager_dhcp6_prefix_remove_all(Manager *m, Link *link) {
1339 Iterator i;
1340 Link *l;
1341 struct in6_addr *addr;
1342
1343 assert_return(m, -EINVAL);
b7d16a91 1344 assert_return(link, -EINVAL);
e133b289
PF		 1345
1346 HASHMAP_FOREACH_KEY(l, addr, m->dhcp6_prefixes, i) {
1347 if (l != link)
1348 continue;
1349
9f386c6d 1350 (void) manager_dhcp6_prefix_remove(m, addr);
e133b289
PF		 1351 }
1352
1353 return 0;
1354}
1355
1356static void dhcp6_prefixes_hash_func(const void *p, struct siphash *state) {
1357 const struct in6_addr *addr = p;
1358
1359 assert(p);
1360
1361 siphash24_compress(addr, sizeof(*addr), state);
1362}
1363
1364static int dhcp6_prefixes_compare_func(const void *_a, const void *_b) {
1365 const struct in6_addr *a = _a, *b = _b;
1366
aa18944d 1367 return memcmp(a, b, sizeof(*a));
e133b289
PF		 1368}
1369
1370static const struct hash_ops dhcp6_prefixes_hash_ops = {
1371 .hash = dhcp6_prefixes_hash_func,
1372 .compare = dhcp6_prefixes_compare_func,
1373};
1374
3534a043 1375int manager_new(Manager **ret) {
8e766630 1376 _cleanup_(manager_freep) Manager *m = NULL;
45af44d4 1377 int r;
f579559b 1378
5fae368b
TG		 1379 m = new0(Manager, 1);
1380 if (!m)
1381 return -ENOMEM;
45af44d4 1382
5fae368b
TG		 1383 m->state_file = strdup("/run/systemd/netif/state");
1384 if (!m->state_file)
1385 return -ENOMEM;
1386
3534a043
YW		 1387 r = sd_event_default(&m->event);
1388 if (r < 0)
1389 return r;
1390
05e21627
YW		 1391 (void) sd_event_set_watchdog(m->event, true);
1392 (void) sd_event_add_signal(m->event, NULL, SIGTERM, NULL, NULL);
1393 (void) sd_event_add_signal(m->event, NULL, SIGINT, NULL, NULL);
5fae368b 1394
84de38c5
TG		 1395 r = sd_event_add_post(m->event, NULL, manager_dirty_handler, m);
1396 if (r < 0)
1397 return r;
1398
5fae368b 1399 r = manager_connect_rtnl(m);
45af44d4
TG		 1400 if (r < 0)
1401 return r;
1402
05d0c2e3
JT		 1403 r = manager_connect_genl(m);
1404 if (r < 0)
1405 return r;
1406
5fae368b
TG		 1407 r = manager_connect_udev(m);
1408 if (r < 0)
1409 return r;
45af44d4 1410
5fae368b
TG		 1411 m->netdevs = hashmap_new(&string_hash_ops);
1412 if (!m->netdevs)
1413 return -ENOMEM;
f579559b 1414
5fae368b 1415 LIST_HEAD_INIT(m->networks);
f579559b 1416
05d0c2e3
JT		 1417 r = sd_resolve_default(&m->resolve);
1418 if (r < 0)
1419 return r;
1420
1421 r = sd_resolve_attach_event(m->resolve, m->event, 0);
1422 if (r < 0)
1423 return r;
1424
5fae368b
TG		 1425 r = setup_default_address_pool(m);
1426 if (r < 0)
1427 return r;
f579559b 1428
e133b289
PF		 1429 m->dhcp6_prefixes = hashmap_new(&dhcp6_prefixes_hash_ops);
1430 if (!m->dhcp6_prefixes)
1431 return -ENOMEM;
1432
8341a5c3 1433 m->duid.type = DUID_TYPE_EN;
413708d1 1434
458d8ae3 1435 (void) routing_policy_load_rules(m->state_file, &m->rules_saved);
bce67bbe 1436
1cc6c93a 1437 *ret = TAKE_PTR(m);
f579559b 1438
f579559b
TG		 1439 return 0;
1440}
1441
5fae368b
TG		 1442void manager_free(Manager *m) {
1443 Network *network;
1444 NetDev *netdev;
1445 Link *link;
1446 AddressPool *pool;
f579559b 1447
5fae368b
TG		 1448 if (!m)
1449 return;
505f8da7 1450
5fae368b 1451 free(m->state_file);
505f8da7 1452
bce67bbe
SS		 1453 while ((network = m->networks))
1454 network_free(network);
1455
e133b289
PF		 1456 while ((link = hashmap_first(m->dhcp6_prefixes)))
1457 link_unref(link);
1458 hashmap_free(m->dhcp6_prefixes);
1459
5fae368b
TG		 1460 while ((link = hashmap_first(m->links)))
1461 link_unref(link);
1462 hashmap_free(m->links);
f579559b 1463
27dfc982
YW		 1464 set_free(m->links_requesting_uuid);
1465 set_free(m->duids_requesting_uuid);
1466
dbffab87
TG		 1467 hashmap_free(m->networks_by_name);
1468
5fae368b
TG		 1469 while ((netdev = hashmap_first(m->netdevs)))
1470 netdev_unref(netdev);
1471 hashmap_free(m->netdevs);
1472
1473 while ((pool = m->address_pools))
1474 address_pool_free(pool);
1475
bce67bbe
SS		 1476 set_free(m->rules);
1477 set_free(m->rules_foreign);
1478
b921fcb2 1479 set_free_with_destructor(m->rules_saved, routing_policy_rule_free);
bce67bbe 1480
1c4baffc 1481 sd_netlink_unref(m->rtnl);
e4269943 1482 sd_netlink_unref(m->genl);
2f5b4a77 1483 sd_event_unref(m->event);
5fae368b 1484
05d0c2e3
JT		 1485 sd_resolve_unref(m->resolve);
1486
7d20d375
TG		 1487 sd_event_source_unref(m->udev_event_source);
1488 udev_monitor_unref(m->udev_monitor);
1489 udev_unref(m->udev);
1490
1491 sd_bus_unref(m->bus);
7d20d375 1492
7901cea1
MP		 1493 free(m->dynamic_timezone);
1494 free(m->dynamic_hostname);
1495
5fae368b
TG		 1496 free(m);
1497}
1498
b76d99d9 1499int manager_start(Manager *m) {
84de38c5
TG		 1500 Link *link;
1501 Iterator i;
1502
a97dcc12
TG		 1503 assert(m);
1504
84de38c5
TG		 1505 /* The dirty handler will deal with future serialization, but the first one
1506 must be done explicitly. */
1507
1508 manager_save(m);
1509
1510 HASHMAP_FOREACH(link, m->links, i)
1511 link_save(link);
1512
b76d99d9 1513 return 0;
a97dcc12
TG		 1514}
1515
5fae368b
TG		 1516int manager_load_config(Manager *m) {
1517 int r;
1518
1519 /* update timestamp */
1520 paths_check_timestamp(network_dirs, &m->network_dirs_ts_usec, true);
1521
1522 r = netdev_load(m);
f579559b
TG		 1523 if (r < 0)
1524 return r;
1525
5fae368b 1526 r = network_load(m);
9021bb9f
TG		 1527 if (r < 0)
1528 return r;
1529
f579559b
TG		 1530 return 0;
1531}
f882c247 1532
5fae368b
TG		 1533bool manager_should_reload(Manager *m) {
1534 return paths_check_timestamp(network_dirs, &m->network_dirs_ts_usec, false);
1535}
1536
1537int manager_rtnl_enumerate_links(Manager *m) {
4afd3348 1538 _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL, *reply = NULL;
1c4baffc 1539 sd_netlink_message *link;
f882c247
TG		 1540 int r;
1541
5da8149f 1542 assert(m);
5fae368b 1543 assert(m->rtnl);
5da8149f 1544
5fae368b 1545 r = sd_rtnl_message_new_link(m->rtnl, &req, RTM_GETLINK, 0);
f882c247
TG		 1546 if (r < 0)
1547 return r;
1548
1c4baffc 1549 r = sd_netlink_message_request_dump(req, true);
dd3efc09
TG		 1550 if (r < 0)
1551 return r;
1552
1c4baffc 1553 r = sd_netlink_call(m->rtnl, req, 0, &reply);
f2236469
TG		 1554 if (r < 0)
1555 return r;
1556
1c4baffc 1557 for (link = reply; link; link = sd_netlink_message_next(link)) {
5fae368b 1558 int k;
2e9f08ea 1559
6a24f148
TG		 1560 m->enumerating = true;
1561
5fae368b
TG		 1562 k = manager_rtnl_process_link(m->rtnl, link, m);
1563 if (k < 0)
1564 r = k;
6a24f148
TG		 1565
1566 m->enumerating = false;
5fae368b 1567 }
2e9f08ea 1568
5fae368b 1569 return r;
f882c247 1570}
3bef724f 1571
5fae368b 1572int manager_rtnl_enumerate_addresses(Manager *m) {
4afd3348 1573 _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL, *reply = NULL;
1c4baffc 1574 sd_netlink_message *addr;
1346b1f0
TG		 1575 int r;
1576
5fae368b
TG		 1577 assert(m);
1578 assert(m->rtnl);
bcbca829 1579
5fae368b
TG		 1580 r = sd_rtnl_message_new_addr(m->rtnl, &req, RTM_GETADDR, 0, 0);
1581 if (r < 0)
1582 return r;
bcbca829 1583
1c4baffc 1584 r = sd_netlink_message_request_dump(req, true);
1346b1f0
TG		 1585 if (r < 0)
1586 return r;
1587
1c4baffc 1588 r = sd_netlink_call(m->rtnl, req, 0, &reply);
5fae368b
TG		 1589 if (r < 0)
1590 return r;
1591
1c4baffc 1592 for (addr = reply; addr; addr = sd_netlink_message_next(addr)) {
5fae368b
TG		 1593 int k;
1594
6a24f148
TG		 1595 m->enumerating = true;
1596
200a0868 1597 k = manager_rtnl_process_address(m->rtnl, addr, m);
5fae368b
TG		 1598 if (k < 0)
1599 r = k;
6a24f148
TG		 1600
1601 m->enumerating = false;
5fae368b
TG		 1602 }
1603
1604 return r;
1346b1f0
TG		 1605}
1606
1c8e710c 1607int manager_rtnl_enumerate_routes(Manager *m) {
4afd3348 1608 _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL, *reply = NULL;
1c8e710c
TG		 1609 sd_netlink_message *route;
1610 int r;
1611
1612 assert(m);
1613 assert(m->rtnl);
1614
1615 r = sd_rtnl_message_new_route(m->rtnl, &req, RTM_GETROUTE, 0, 0);
1616 if (r < 0)
1617 return r;
1618
1619 r = sd_netlink_message_request_dump(req, true);
1620 if (r < 0)
1621 return r;
1622
1623 r = sd_netlink_call(m->rtnl, req, 0, &reply);
1624 if (r < 0)
1625 return r;
1626
1627 for (route = reply; route; route = sd_netlink_message_next(route)) {
1628 int k;
1629
1630 m->enumerating = true;
1631
1632 k = manager_rtnl_process_route(m->rtnl, route, m);
1633 if (k < 0)
1634 r = k;
1635
1636 m->enumerating = false;
1637 }
1638
1639 return r;
1640}
1641
bce67bbe
SS		 1642int manager_rtnl_enumerate_rules(Manager *m) {
1643 _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL, *reply = NULL;
1644 sd_netlink_message *rule;
1645 int r;
1646
1647 assert(m);
1648 assert(m->rtnl);
1649
1650 r = sd_rtnl_message_new_routing_policy_rule(m->rtnl, &req, RTM_GETRULE, 0);
1651 if (r < 0)
1652 return r;
1653
1654 r = sd_netlink_message_request_dump(req, true);
1655 if (r < 0)
1656 return r;
1657
1658 r = sd_netlink_call(m->rtnl, req, 0, &reply);
6acbbdd4
SS		 1659 if (r < 0) {
1660 if (r == -EOPNOTSUPP) {
1661 log_debug("FIB Rules are not supported by the kernel. Ignoring.");
1662 return 0;
1663 }
1664
bce67bbe 1665 return r;
6acbbdd4 1666 }
bce67bbe
SS		 1667
1668 for (rule = reply; rule; rule = sd_netlink_message_next(rule)) {
1669 int k;
1670
1671 m->enumerating = true;
1672
1673 k = manager_rtnl_process_rule(m->rtnl, rule, m);
1674 if (k < 0)
1675 r = k;
1676
1677 m->enumerating = false;
1678 }
1679
1680 return r;
1681}
1682
0dd25fb9 1683int manager_address_pool_acquire(Manager *m, int family, unsigned prefixlen, union in_addr_union *found) {
11bf3cce
LP		 1684 AddressPool *p;
1685 int r;
1686
1687 assert(m);
1688 assert(prefixlen > 0);
1689 assert(found);
1690
1691 LIST_FOREACH(address_pools, p, m->address_pools) {
1692 if (p->family != family)
1693 continue;
1694
1695 r = address_pool_acquire(p, prefixlen, found);
1696 if (r != 0)
1697 return r;
1698 }
1699
1700 return 0;
1701}
4f5f911e
LP		 1702
1703Link* manager_find_uplink(Manager *m, Link *exclude) {
1704 _cleanup_free_ struct local_address *gateways = NULL;
1705 int n, i;
1706
1707 assert(m);
1708
1709 /* Looks for a suitable "uplink", via black magic: an
1710 * interface that is up and where the default route with the
1711 * highest priority points to. */
1712
1713 n = local_gateways(m->rtnl, 0, AF_UNSPEC, &gateways);
1714 if (n < 0) {
1715 log_warning_errno(n, "Failed to determine list of default gateways: %m");
1716 return NULL;
1717 }
1718
1719 for (i = 0; i < n; i++) {
1720 Link *link;
1721
1722 link = hashmap_get(m->links, INT_TO_PTR(gateways[i].ifindex));
1723 if (!link) {
c2c940bd 1724 log_debug("Weird, found a gateway for a link we don't know. Ignoring.");
4f5f911e
LP		 1725 continue;
1726 }
1727
1728 if (link == exclude)
1729 continue;
1730
1731 if (link->operstate < LINK_OPERSTATE_ROUTABLE)
1732 continue;
1733
1734 return link;
1735 }
1736
1737 return NULL;
1738}
84de38c5
TG		 1739
1740void manager_dirty(Manager *manager) {
1741 assert(manager);
1742
1743 /* the serialized state in /run is no longer up-to-date */
1744 manager->dirty = true;
1745}
59eb33e0
MP		 1746
1747static int set_hostname_handler(sd_bus_message *m, void *userdata, sd_bus_error *ret_error) {
1748 Manager *manager = userdata;
1749 const sd_bus_error *e;
1750
1751 assert(m);
1752 assert(manager);
1753
1754 e = sd_bus_message_get_error(m);
1755 if (e)
1756 log_warning_errno(sd_bus_error_get_errno(e), "Could not set hostname: %s", e->message);
1757
1758 return 1;
1759}
1760
1761int manager_set_hostname(Manager *m, const char *hostname) {
1762 int r;
1763
1764 log_debug("Setting transient hostname: '%s'", strna(hostname));
d7afd945 1765
7901cea1
MP		 1766 if (free_and_strdup(&m->dynamic_hostname, hostname) < 0)
1767 return log_oom();
59eb33e0 1768
d7afd945 1769 if (!m->bus || sd_bus_is_ready(m->bus) <= 0) {
e0d95f03 1770 log_debug("Not connected to system bus, setting hostname later.");
59eb33e0
MP		 1771 return 0;
1772 }
1773
1774 r = sd_bus_call_method_async(
1775 m->bus,
1776 NULL,
1777 "org.freedesktop.hostname1",
1778 "/org/freedesktop/hostname1",
1779 "org.freedesktop.hostname1",
1780 "SetHostname",
1781 set_hostname_handler,
1782 m,
1783 "sb",
1784 hostname,
1785 false);
1786
1787 if (r < 0)
1788 return log_error_errno(r, "Could not set transient hostname: %m");
1789
1790 return 0;
1791}
1792
1793static int set_timezone_handler(sd_bus_message *m, void *userdata, sd_bus_error *ret_error) {
1794 Manager *manager = userdata;
1795 const sd_bus_error *e;
1796
1797 assert(m);
1798 assert(manager);
1799
1800 e = sd_bus_message_get_error(m);
1801 if (e)
1802 log_warning_errno(sd_bus_error_get_errno(e), "Could not set timezone: %s", e->message);
1803
1804 return 1;
1805}
1806
1807int manager_set_timezone(Manager *m, const char *tz) {
1808 int r;
1809
1810 assert(m);
1811 assert(tz);
1812
1813 log_debug("Setting system timezone: '%s'", tz);
7901cea1
MP		 1814 if (free_and_strdup(&m->dynamic_timezone, tz) < 0)
1815 return log_oom();
59eb33e0 1816
d7afd945 1817 if (!m->bus || sd_bus_is_ready(m->bus) <= 0) {
e0d95f03 1818 log_debug("Not connected to system bus, setting timezone later.");
59eb33e0
MP		 1819 return 0;
1820 }
1821
1822 r = sd_bus_call_method_async(
1823 m->bus,
1824 NULL,
1825 "org.freedesktop.timedate1",
1826 "/org/freedesktop/timedate1",
1827 "org.freedesktop.timedate1",
1828 "SetTimezone",
1829 set_timezone_handler,
1830 m,
1831 "sb",
1832 tz,
1833 false);
1834 if (r < 0)
1835 return log_error_errno(r, "Could not set timezone: %m");
1836
1837 return 0;
1838}
27dfc982
YW		 1839
1840int manager_request_product_uuid(Manager *m, Link *link) {
1841 int r;
1842
1843 assert(m);
1844
1845 if (m->has_product_uuid)
1846 return 0;
1847
1848 log_debug("Requesting product UUID");
1849
1850 if (link) {
1851 DUID *duid;
1852
1853 assert_se(duid = link_get_duid(link));
1854
1855 r = set_ensure_allocated(&m->links_requesting_uuid, NULL);
1856 if (r < 0)
1857 return log_oom();
1858
1859 r = set_ensure_allocated(&m->duids_requesting_uuid, NULL);
1860 if (r < 0)
1861 return log_oom();
1862
1863 r = set_put(m->links_requesting_uuid, link);
1864 if (r < 0)
1865 return log_oom();
1866
1867 r = set_put(m->duids_requesting_uuid, duid);
1868 if (r < 0)
1869 return log_oom();
1870 }
1871
1872 if (!m->bus || sd_bus_is_ready(m->bus) <= 0) {
1873 log_debug("Not connected to system bus, requesting product UUID later.");
1874 return 0;
1875 }
1876
1877 r = sd_bus_call_method_async(
1878 m->bus,
1879 NULL,
1880 "org.freedesktop.hostname1",
1881 "/org/freedesktop/hostname1",
1882 "org.freedesktop.hostname1",
1883 "GetProductUUID",
1884 get_product_uuid_handler,
1885 m,
1886 "b",
1887 false);
1888 if (r < 0)
1889 return log_warning_errno(r, "Failed to get product UUID: %m");
1890
1891 return 0;
1892}
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