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f579559b TG |
1 | /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ |
2 | ||
3 | /*** | |
4 | This file is part of systemd. | |
5 | ||
6 | Copyright 2013 Tom Gundersen <teg@jklm.no> | |
7 | ||
8 | systemd is free software; you can redistribute it and/or modify it | |
9 | under the terms of the GNU Lesser General Public License as published by | |
10 | the Free Software Foundation; either version 2.1 of the License, or | |
11 | (at your option) any later version. | |
12 | ||
13 | systemd is distributed in the hope that it will be useful, but | |
14 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
16 | Lesser General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU Lesser General Public License | |
19 | along with systemd; If not, see <http://www.gnu.org/licenses/>. | |
20 | ***/ | |
21 | ||
69a93e7d | 22 | #include <ctype.h> |
987efa17 | 23 | #include <net/if.h> |
69a93e7d | 24 | |
f579559b | 25 | #include "networkd.h" |
3be1d7e0 | 26 | #include "networkd-netdev.h" |
0b1831c2 | 27 | #include "networkd-link.h" |
c6f7c917 | 28 | #include "network-internal.h" |
f579559b TG |
29 | #include "path-util.h" |
30 | #include "conf-files.h" | |
31 | #include "conf-parser.h" | |
477e73b5 | 32 | #include "util.h" |
f579559b TG |
33 | |
34 | static int network_load_one(Manager *manager, const char *filename) { | |
35 | _cleanup_network_free_ Network *network = NULL; | |
36 | _cleanup_fclose_ FILE *file = NULL; | |
b3070dc0 TG |
37 | Route *route; |
38 | Address *address; | |
f579559b TG |
39 | int r; |
40 | ||
bf1bc670 TA |
41 | assert(manager); |
42 | assert(filename); | |
43 | ||
f579559b TG |
44 | file = fopen(filename, "re"); |
45 | if (!file) { | |
46 | if (errno == ENOENT) | |
47 | return 0; | |
48 | else | |
ecb08ec6 | 49 | return -errno; |
f579559b TG |
50 | } |
51 | ||
ed88bcfb ZJS |
52 | if (null_or_empty_fd(fileno(file))) { |
53 | log_debug("Skipping empty file: %s", filename); | |
6916ec29 TG |
54 | return 0; |
55 | } | |
56 | ||
f579559b TG |
57 | network = new0(Network, 1); |
58 | if (!network) | |
59 | return log_oom(); | |
60 | ||
5a3eb5a7 TG |
61 | network->manager = manager; |
62 | ||
f048a16b TG |
63 | LIST_HEAD_INIT(network->static_addresses); |
64 | LIST_HEAD_INIT(network->static_routes); | |
f579559b | 65 | |
d5099efc | 66 | network->stacked_netdevs = hashmap_new(&string_hash_ops); |
6a0a2f86 | 67 | if (!network->stacked_netdevs) |
326cb406 SS |
68 | return log_oom(); |
69 | ||
d5099efc | 70 | network->addresses_by_section = hashmap_new(NULL); |
6ae115c1 TG |
71 | if (!network->addresses_by_section) |
72 | return log_oom(); | |
73 | ||
d5099efc | 74 | network->routes_by_section = hashmap_new(NULL); |
6ae115c1 TG |
75 | if (!network->routes_by_section) |
76 | return log_oom(); | |
77 | ||
78 | network->filename = strdup(filename); | |
79 | if (!network->filename) | |
80 | return log_oom(); | |
81 | ||
bd8f6538 | 82 | network->dhcp = DHCP_SUPPORT_NONE; |
bcb7a07e | 83 | network->dhcp_ntp = true; |
5be4d38e | 84 | network->dhcp_dns = true; |
1346b1f0 | 85 | network->dhcp_hostname = true; |
e1ea665e | 86 | network->dhcp_routes = true; |
4cc7a82c | 87 | network->dhcp_sendhost = true; |
84b5b79a | 88 | network->dhcp_route_metric = DHCP_ROUTE_METRIC; |
5be4d38e | 89 | |
bd8f6538 TG |
90 | network->llmnr = LLMNR_SUPPORT_YES; |
91 | ||
e9f3d2d5 | 92 | r = config_parse(NULL, filename, file, |
c106cc36 TG |
93 | "Match\0" |
94 | "Link\0" | |
95 | "Network\0" | |
96 | "Address\0" | |
97 | "Route\0" | |
98 | "DHCP\0" | |
99 | "DHCPv4\0" | |
100 | "BridgePort\0", | |
e9f3d2d5 | 101 | config_item_perf_lookup, network_network_gperf_lookup, |
36f822c4 ZJS |
102 | false, false, true, network); |
103 | if (r < 0) | |
f579559b | 104 | return r; |
f579559b | 105 | |
f579559b | 106 | LIST_PREPEND(networks, manager->networks, network); |
b3070dc0 | 107 | |
3d3d4255 | 108 | LIST_FOREACH(routes, route, network->static_routes) { |
b3070dc0 TG |
109 | if (!route->family) { |
110 | log_warning("Route section without Gateway field configured in %s. " | |
111 | "Ignoring", filename); | |
112 | return 0; | |
113 | } | |
b3070dc0 TG |
114 | } |
115 | ||
3d3d4255 | 116 | LIST_FOREACH(addresses, address, network->static_addresses) { |
b3070dc0 TG |
117 | if (!address->family) { |
118 | log_warning("Address section without Address field configured in %s. " | |
119 | "Ignoring", filename); | |
120 | return 0; | |
121 | } | |
122 | } | |
123 | ||
f579559b TG |
124 | network = NULL; |
125 | ||
126 | return 0; | |
127 | } | |
128 | ||
129 | int network_load(Manager *manager) { | |
130 | Network *network; | |
477e73b5 ZJS |
131 | _cleanup_strv_free_ char **files = NULL; |
132 | char **f; | |
f579559b TG |
133 | int r; |
134 | ||
135 | assert(manager); | |
136 | ||
137 | while ((network = manager->networks)) | |
138 | network_free(network); | |
139 | ||
2ad8416d | 140 | r = conf_files_list_strv(&files, ".network", NULL, network_dirs); |
f647962d MS |
141 | if (r < 0) |
142 | return log_error_errno(r, "Failed to enumerate network files: %m"); | |
f579559b TG |
143 | |
144 | STRV_FOREACH_BACKWARDS(f, files) { | |
145 | r = network_load_one(manager, *f); | |
146 | if (r < 0) | |
147 | return r; | |
148 | } | |
149 | ||
f579559b TG |
150 | return 0; |
151 | } | |
152 | ||
f579559b | 153 | void network_free(Network *network) { |
47e2dc31 | 154 | NetDev *netdev; |
f579559b TG |
155 | Route *route; |
156 | Address *address; | |
06f021a8 | 157 | Iterator i; |
f579559b TG |
158 | |
159 | if (!network) | |
160 | return; | |
161 | ||
162 | free(network->filename); | |
163 | ||
164 | free(network->match_mac); | |
165 | free(network->match_path); | |
166 | free(network->match_driver); | |
167 | free(network->match_type); | |
168 | free(network->match_name); | |
169 | ||
170 | free(network->description); | |
edb85f0d | 171 | free(network->dhcp_vendor_class_identifier); |
f579559b | 172 | |
c106cc36 TG |
173 | free(network->mac); |
174 | ||
b0e39c82 TG |
175 | strv_free(network->ntp); |
176 | strv_free(network->dns); | |
486d1a81 | 177 | strv_free(network->domains); |
3bef724f | 178 | |
47e2dc31 TG |
179 | netdev_unref(network->bridge); |
180 | ||
181 | netdev_unref(network->bond); | |
182 | ||
2c36be2f TG |
183 | HASHMAP_FOREACH(netdev, network->stacked_netdevs, i) { |
184 | hashmap_remove(network->stacked_netdevs, netdev->ifname); | |
326cb406 | 185 | netdev_unref(netdev); |
2c36be2f | 186 | } |
6a0a2f86 | 187 | hashmap_free(network->stacked_netdevs); |
326cb406 | 188 | |
f048a16b | 189 | while ((route = network->static_routes)) |
f579559b TG |
190 | route_free(route); |
191 | ||
f048a16b | 192 | while ((address = network->static_addresses)) |
f579559b TG |
193 | address_free(address); |
194 | ||
6ae115c1 TG |
195 | hashmap_free(network->addresses_by_section); |
196 | hashmap_free(network->routes_by_section); | |
197 | ||
b3070dc0 | 198 | if (network->manager && network->manager->networks) |
7384fa92 | 199 | LIST_REMOVE(networks, network->manager->networks, network); |
f579559b | 200 | |
79e16ce3 LP |
201 | condition_free_list(network->match_host); |
202 | condition_free_list(network->match_virt); | |
203 | condition_free_list(network->match_kernel); | |
204 | condition_free_list(network->match_arch); | |
205 | ||
f579559b TG |
206 | free(network); |
207 | } | |
208 | ||
505f8da7 TG |
209 | int network_get(Manager *manager, struct udev_device *device, |
210 | const char *ifname, const struct ether_addr *address, | |
211 | Network **ret) { | |
f579559b TG |
212 | Network *network; |
213 | ||
214 | assert(manager); | |
f579559b TG |
215 | assert(ret); |
216 | ||
f579559b TG |
217 | LIST_FOREACH(networks, network, manager->networks) { |
218 | if (net_match_config(network->match_mac, network->match_path, | |
505f8da7 TG |
219 | network->match_driver, network->match_type, |
220 | network->match_name, network->match_host, | |
221 | network->match_virt, network->match_kernel, | |
222 | network->match_arch, | |
223 | address, | |
224 | udev_device_get_property_value(device, "ID_PATH"), | |
225 | udev_device_get_driver(udev_device_get_parent(device)), | |
226 | udev_device_get_property_value(device, "ID_NET_DRIVER"), | |
227 | udev_device_get_devtype(device), | |
32bc8adc TG |
228 | ifname)) { |
229 | const char *attr; | |
230 | uint8_t name_assign_type = NET_NAME_UNKNOWN; | |
231 | ||
232 | if (network->match_name) { | |
233 | attr = udev_device_get_sysattr_value(device, "name_assign_type"); | |
285760fe DR |
234 | if (attr) |
235 | (void)safe_atou8(attr, &name_assign_type); | |
32bc8adc TG |
236 | |
237 | if (name_assign_type == NET_NAME_ENUM) | |
238 | log_warning("%-*s: found matching network '%s', based on potentially unstable ifname", | |
239 | IFNAMSIZ, ifname, network->filename); | |
240 | else | |
241 | log_debug("%-*s: found matching network '%s'", IFNAMSIZ, ifname, network->filename); | |
242 | } else | |
243 | log_debug("%-*s: found matching network '%s'", IFNAMSIZ, ifname, network->filename); | |
244 | ||
f579559b TG |
245 | *ret = network; |
246 | return 0; | |
247 | } | |
248 | } | |
249 | ||
250 | *ret = NULL; | |
251 | ||
252 | return -ENOENT; | |
253 | } | |
254 | ||
255 | int network_apply(Manager *manager, Network *network, Link *link) { | |
f579559b TG |
256 | int r; |
257 | ||
f579559b TG |
258 | link->network = network; |
259 | ||
bfa695b5 TG |
260 | if (network->ipv4ll_route) { |
261 | Route *route; | |
262 | ||
263 | r = route_new_static(network, 0, &route); | |
264 | if (r < 0) | |
265 | return r; | |
266 | ||
267 | r = inet_pton(AF_INET, "169.254.0.0", &route->dst_addr.in); | |
268 | if (r == 0) | |
269 | return -EINVAL; | |
270 | if (r < 0) | |
271 | return -errno; | |
272 | ||
273 | route->family = AF_INET; | |
274 | route->dst_prefixlen = 16; | |
275 | route->scope = RT_SCOPE_LINK; | |
276 | route->metrics = IPV4LL_ROUTE_METRIC; | |
277 | route->protocol = RTPROT_STATIC; | |
278 | } | |
279 | ||
bcb7a07e | 280 | if (network->dns || network->ntp) { |
091a364c | 281 | r = link_save(link); |
3bef724f TG |
282 | if (r < 0) |
283 | return r; | |
284 | } | |
285 | ||
f579559b TG |
286 | return 0; |
287 | } | |
02b59d57 | 288 | |
69a93e7d | 289 | int config_parse_netdev(const char *unit, |
02b59d57 TG |
290 | const char *filename, |
291 | unsigned line, | |
292 | const char *section, | |
293 | unsigned section_line, | |
294 | const char *lvalue, | |
295 | int ltype, | |
296 | const char *rvalue, | |
297 | void *data, | |
298 | void *userdata) { | |
299 | Network *network = userdata; | |
31d0ac36 TG |
300 | _cleanup_free_ char *kind_string = NULL; |
301 | char *p; | |
1a436809 | 302 | NetDev *netdev; |
69a93e7d | 303 | NetDevKind kind; |
02b59d57 TG |
304 | int r; |
305 | ||
306 | assert(filename); | |
307 | assert(lvalue); | |
308 | assert(rvalue); | |
309 | assert(data); | |
310 | ||
69a93e7d TG |
311 | kind_string = strdup(lvalue); |
312 | if (!kind_string) | |
313 | return log_oom(); | |
52433f6b | 314 | |
69a93e7d TG |
315 | /* the keys are CamelCase versions of the kind */ |
316 | for (p = kind_string; *p; p++) | |
317 | *p = tolower(*p); | |
52433f6b | 318 | |
69a93e7d TG |
319 | kind = netdev_kind_from_string(kind_string); |
320 | if (kind == _NETDEV_KIND_INVALID) { | |
52433f6b | 321 | log_syntax(unit, LOG_ERR, filename, line, EINVAL, |
69a93e7d | 322 | "Invalid NetDev kind: %s", lvalue); |
52433f6b TG |
323 | return 0; |
324 | } | |
325 | ||
54abf461 TG |
326 | r = netdev_get(network->manager, rvalue, &netdev); |
327 | if (r < 0) { | |
328 | log_syntax(unit, LOG_ERR, filename, line, EINVAL, | |
69a93e7d | 329 | "%s could not be found, ignoring assignment: %s", lvalue, rvalue); |
54abf461 TG |
330 | return 0; |
331 | } | |
332 | ||
69a93e7d | 333 | if (netdev->kind != kind) { |
54abf461 | 334 | log_syntax(unit, LOG_ERR, filename, line, EINVAL, |
69a93e7d | 335 | "NetDev is not a %s, ignoring assignment: %s", lvalue, rvalue); |
54abf461 TG |
336 | return 0; |
337 | } | |
338 | ||
69a93e7d TG |
339 | switch (kind) { |
340 | case NETDEV_KIND_BRIDGE: | |
341 | network->bridge = netdev; | |
54abf461 | 342 | |
69a93e7d TG |
343 | break; |
344 | case NETDEV_KIND_BOND: | |
345 | network->bond = netdev; | |
fe6b2d55 | 346 | |
69a93e7d TG |
347 | break; |
348 | case NETDEV_KIND_VLAN: | |
69a93e7d | 349 | case NETDEV_KIND_MACVLAN: |
326cb406 | 350 | case NETDEV_KIND_VXLAN: |
6a0a2f86 | 351 | r = hashmap_put(network->stacked_netdevs, netdev->ifname, netdev); |
326cb406 SS |
352 | if (r < 0) { |
353 | log_syntax(unit, LOG_ERR, filename, line, EINVAL, | |
6a0a2f86 | 354 | "Can not add VLAN '%s' to network: %s", |
aa9f1140 | 355 | rvalue, strerror(-r)); |
326cb406 SS |
356 | return 0; |
357 | } | |
358 | ||
69a93e7d TG |
359 | break; |
360 | default: | |
361 | assert_not_reached("Can not parse NetDev"); | |
fe6b2d55 TG |
362 | } |
363 | ||
47e2dc31 TG |
364 | netdev_ref(netdev); |
365 | ||
fe6b2d55 TG |
366 | return 0; |
367 | } | |
7951dea2 | 368 | |
6192b846 TG |
369 | int config_parse_domains(const char *unit, |
370 | const char *filename, | |
371 | unsigned line, | |
372 | const char *section, | |
373 | unsigned section_line, | |
374 | const char *lvalue, | |
375 | int ltype, | |
376 | const char *rvalue, | |
377 | void *data, | |
378 | void *userdata) { | |
67272d15 | 379 | Network *network = userdata; |
6192b846 TG |
380 | char ***domains = data; |
381 | char **domain; | |
382 | int r; | |
383 | ||
384 | r = config_parse_strv(unit, filename, line, section, section_line, | |
385 | lvalue, ltype, rvalue, domains, userdata); | |
386 | if (r < 0) | |
387 | return r; | |
388 | ||
389 | strv_uniq(*domains); | |
f15b6e5a | 390 | network->wildcard_domain = !!strv_find(*domains, "*"); |
67272d15 | 391 | |
40274ed6 LP |
392 | STRV_FOREACH(domain, *domains) { |
393 | if (is_localhost(*domain)) | |
394 | log_syntax(unit, LOG_ERR, filename, line, EINVAL, "'localhost' domain names may not be configured, ignoring assignment: %s", *domain); | |
395 | else if (!hostname_is_valid(*domain)) { | |
396 | if (!streq(*domain, "*")) | |
397 | log_syntax(unit, LOG_ERR, filename, line, EINVAL, "domain name is not valid, ignoring assignment: %s", *domain); | |
398 | } else | |
399 | continue; | |
400 | ||
401 | strv_remove(*domains, *domain); | |
402 | ||
403 | /* We removed one entry, make sure we don't skip the next one */ | |
404 | domain--; | |
405 | } | |
f15b6e5a | 406 | |
6192b846 TG |
407 | return 0; |
408 | } | |
409 | ||
7951dea2 SS |
410 | int config_parse_tunnel(const char *unit, |
411 | const char *filename, | |
412 | unsigned line, | |
413 | const char *section, | |
414 | unsigned section_line, | |
415 | const char *lvalue, | |
416 | int ltype, | |
417 | const char *rvalue, | |
418 | void *data, | |
419 | void *userdata) { | |
420 | Network *network = userdata; | |
421 | NetDev *netdev; | |
422 | int r; | |
423 | ||
424 | assert(filename); | |
425 | assert(lvalue); | |
426 | assert(rvalue); | |
427 | assert(data); | |
428 | ||
429 | r = netdev_get(network->manager, rvalue, &netdev); | |
430 | if (r < 0) { | |
431 | log_syntax(unit, LOG_ERR, filename, line, EINVAL, | |
432 | "Tunnel is invalid, ignoring assignment: %s", rvalue); | |
433 | return 0; | |
434 | } | |
435 | ||
436 | if (netdev->kind != NETDEV_KIND_IPIP && | |
437 | netdev->kind != NETDEV_KIND_SIT && | |
a613382b SS |
438 | netdev->kind != NETDEV_KIND_GRE && |
439 | netdev->kind != NETDEV_KIND_VTI) { | |
7951dea2 SS |
440 | log_syntax(unit, LOG_ERR, filename, line, EINVAL, |
441 | "NetDev is not a tunnel, ignoring assignment: %s", rvalue); | |
442 | return 0; | |
443 | } | |
444 | ||
6a0a2f86 TG |
445 | r = hashmap_put(network->stacked_netdevs, netdev->ifname, netdev); |
446 | if (r < 0) { | |
447 | log_syntax(unit, LOG_ERR, filename, line, EINVAL, | |
448 | "Can not add VLAN '%s' to network: %s", | |
449 | rvalue, strerror(-r)); | |
450 | return 0; | |
451 | } | |
452 | ||
453 | netdev_ref(netdev); | |
7951dea2 SS |
454 | |
455 | return 0; | |
456 | } | |
bd8f6538 TG |
457 | |
458 | static const char* const dhcp_support_table[_DHCP_SUPPORT_MAX] = { | |
459 | [DHCP_SUPPORT_NONE] = "none", | |
460 | [DHCP_SUPPORT_BOTH] = "both", | |
461 | [DHCP_SUPPORT_V4] = "v4", | |
462 | [DHCP_SUPPORT_V6] = "v6", | |
463 | }; | |
464 | ||
465 | DEFINE_STRING_TABLE_LOOKUP(dhcp_support, DHCPSupport); | |
466 | ||
467 | int config_parse_dhcp( | |
468 | const char* unit, | |
469 | const char *filename, | |
470 | unsigned line, | |
471 | const char *section, | |
472 | unsigned section_line, | |
473 | const char *lvalue, | |
474 | int ltype, | |
475 | const char *rvalue, | |
476 | void *data, | |
477 | void *userdata) { | |
478 | ||
479 | DHCPSupport *dhcp = data; | |
480 | int k; | |
481 | ||
482 | assert(filename); | |
483 | assert(lvalue); | |
484 | assert(rvalue); | |
485 | assert(data); | |
486 | ||
487 | /* Our enum shall be a superset of booleans, hence first try | |
488 | * to parse as boolean, and then as enum */ | |
489 | ||
490 | k = parse_boolean(rvalue); | |
491 | if (k > 0) | |
492 | *dhcp = DHCP_SUPPORT_BOTH; | |
493 | else if (k == 0) | |
494 | *dhcp = DHCP_SUPPORT_NONE; | |
495 | else { | |
496 | DHCPSupport s; | |
497 | ||
498 | s = dhcp_support_from_string(rvalue); | |
499 | if (s < 0){ | |
500 | log_syntax(unit, LOG_ERR, filename, line, -s, "Failed to parse DHCP option, ignoring: %s", rvalue); | |
501 | return 0; | |
502 | } | |
503 | ||
504 | *dhcp = s; | |
505 | } | |
506 | ||
507 | return 0; | |
508 | } | |
509 | ||
510 | static const char* const llmnr_support_table[_LLMNR_SUPPORT_MAX] = { | |
511 | [LLMNR_SUPPORT_NO] = "no", | |
512 | [LLMNR_SUPPORT_YES] = "yes", | |
513 | [LLMNR_SUPPORT_RESOLVE] = "resolve", | |
514 | }; | |
515 | ||
516 | DEFINE_STRING_TABLE_LOOKUP(llmnr_support, LLMNRSupport); | |
517 | ||
518 | int config_parse_llmnr( | |
519 | const char* unit, | |
520 | const char *filename, | |
521 | unsigned line, | |
522 | const char *section, | |
523 | unsigned section_line, | |
524 | const char *lvalue, | |
525 | int ltype, | |
526 | const char *rvalue, | |
527 | void *data, | |
528 | void *userdata) { | |
529 | ||
530 | LLMNRSupport *llmnr = data; | |
531 | int k; | |
532 | ||
533 | assert(filename); | |
534 | assert(lvalue); | |
535 | assert(rvalue); | |
536 | assert(data); | |
537 | ||
538 | /* Our enum shall be a superset of booleans, hence first try | |
539 | * to parse as boolean, and then as enum */ | |
540 | ||
541 | k = parse_boolean(rvalue); | |
542 | if (k > 0) | |
543 | *llmnr = LLMNR_SUPPORT_YES; | |
544 | else if (k == 0) | |
545 | *llmnr = LLMNR_SUPPORT_NO; | |
546 | else { | |
547 | LLMNRSupport s; | |
548 | ||
549 | s = llmnr_support_from_string(rvalue); | |
550 | if (s < 0){ | |
551 | log_syntax(unit, LOG_ERR, filename, line, -s, "Failed to parse LLMNR option, ignoring: %s", rvalue); | |
552 | return 0; | |
553 | } | |
554 | ||
555 | *llmnr = s; | |
556 | } | |
557 | ||
558 | return 0; | |
559 | } |