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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 ZJS |
92 | r = config_parse(NULL, filename, file, |
93 | "Match\0Network\0Address\0Route\0DHCP\0DHCPv4\0", | |
94 | config_item_perf_lookup, network_network_gperf_lookup, | |
36f822c4 ZJS |
95 | false, false, true, network); |
96 | if (r < 0) | |
f579559b | 97 | return r; |
f579559b | 98 | |
f579559b | 99 | LIST_PREPEND(networks, manager->networks, network); |
b3070dc0 | 100 | |
3d3d4255 | 101 | LIST_FOREACH(routes, route, network->static_routes) { |
b3070dc0 TG |
102 | if (!route->family) { |
103 | log_warning("Route section without Gateway field configured in %s. " | |
104 | "Ignoring", filename); | |
105 | return 0; | |
106 | } | |
b3070dc0 TG |
107 | } |
108 | ||
3d3d4255 | 109 | LIST_FOREACH(addresses, address, network->static_addresses) { |
b3070dc0 TG |
110 | if (!address->family) { |
111 | log_warning("Address section without Address field configured in %s. " | |
112 | "Ignoring", filename); | |
113 | return 0; | |
114 | } | |
115 | } | |
116 | ||
f579559b TG |
117 | network = NULL; |
118 | ||
119 | return 0; | |
120 | } | |
121 | ||
122 | int network_load(Manager *manager) { | |
123 | Network *network; | |
477e73b5 ZJS |
124 | _cleanup_strv_free_ char **files = NULL; |
125 | char **f; | |
f579559b TG |
126 | int r; |
127 | ||
128 | assert(manager); | |
129 | ||
130 | while ((network = manager->networks)) | |
131 | network_free(network); | |
132 | ||
2ad8416d | 133 | r = conf_files_list_strv(&files, ".network", NULL, network_dirs); |
f579559b | 134 | if (r < 0) { |
da927ba9 | 135 | log_error_errno(r, "Failed to enumerate network files: %m"); |
f579559b TG |
136 | return r; |
137 | } | |
138 | ||
139 | STRV_FOREACH_BACKWARDS(f, files) { | |
140 | r = network_load_one(manager, *f); | |
141 | if (r < 0) | |
142 | return r; | |
143 | } | |
144 | ||
f579559b TG |
145 | return 0; |
146 | } | |
147 | ||
f579559b | 148 | void network_free(Network *network) { |
47e2dc31 | 149 | NetDev *netdev; |
f579559b TG |
150 | Route *route; |
151 | Address *address; | |
06f021a8 | 152 | Iterator i; |
f579559b TG |
153 | |
154 | if (!network) | |
155 | return; | |
156 | ||
157 | free(network->filename); | |
158 | ||
159 | free(network->match_mac); | |
160 | free(network->match_path); | |
161 | free(network->match_driver); | |
162 | free(network->match_type); | |
163 | free(network->match_name); | |
164 | ||
165 | free(network->description); | |
edb85f0d | 166 | free(network->dhcp_vendor_class_identifier); |
f579559b | 167 | |
b0e39c82 TG |
168 | strv_free(network->ntp); |
169 | strv_free(network->dns); | |
486d1a81 | 170 | strv_free(network->domains); |
3bef724f | 171 | |
47e2dc31 TG |
172 | netdev_unref(network->bridge); |
173 | ||
174 | netdev_unref(network->bond); | |
175 | ||
2c36be2f TG |
176 | HASHMAP_FOREACH(netdev, network->stacked_netdevs, i) { |
177 | hashmap_remove(network->stacked_netdevs, netdev->ifname); | |
326cb406 | 178 | netdev_unref(netdev); |
2c36be2f | 179 | } |
6a0a2f86 | 180 | hashmap_free(network->stacked_netdevs); |
326cb406 | 181 | |
f048a16b | 182 | while ((route = network->static_routes)) |
f579559b TG |
183 | route_free(route); |
184 | ||
f048a16b | 185 | while ((address = network->static_addresses)) |
f579559b TG |
186 | address_free(address); |
187 | ||
6ae115c1 TG |
188 | hashmap_free(network->addresses_by_section); |
189 | hashmap_free(network->routes_by_section); | |
190 | ||
b3070dc0 | 191 | if (network->manager && network->manager->networks) |
7384fa92 | 192 | LIST_REMOVE(networks, network->manager->networks, network); |
f579559b | 193 | |
79e16ce3 LP |
194 | condition_free_list(network->match_host); |
195 | condition_free_list(network->match_virt); | |
196 | condition_free_list(network->match_kernel); | |
197 | condition_free_list(network->match_arch); | |
198 | ||
f579559b TG |
199 | free(network); |
200 | } | |
201 | ||
505f8da7 TG |
202 | int network_get(Manager *manager, struct udev_device *device, |
203 | const char *ifname, const struct ether_addr *address, | |
204 | Network **ret) { | |
f579559b TG |
205 | Network *network; |
206 | ||
207 | assert(manager); | |
f579559b TG |
208 | assert(ret); |
209 | ||
f579559b TG |
210 | LIST_FOREACH(networks, network, manager->networks) { |
211 | if (net_match_config(network->match_mac, network->match_path, | |
505f8da7 TG |
212 | network->match_driver, network->match_type, |
213 | network->match_name, network->match_host, | |
214 | network->match_virt, network->match_kernel, | |
215 | network->match_arch, | |
216 | address, | |
217 | udev_device_get_property_value(device, "ID_PATH"), | |
218 | udev_device_get_driver(udev_device_get_parent(device)), | |
219 | udev_device_get_property_value(device, "ID_NET_DRIVER"), | |
220 | udev_device_get_devtype(device), | |
221 | ifname)) { | |
97578344 | 222 | log_debug("%-*s: found matching network '%s'", IFNAMSIZ, ifname, |
505f8da7 | 223 | network->filename); |
f579559b TG |
224 | *ret = network; |
225 | return 0; | |
226 | } | |
227 | } | |
228 | ||
229 | *ret = NULL; | |
230 | ||
231 | return -ENOENT; | |
232 | } | |
233 | ||
234 | int network_apply(Manager *manager, Network *network, Link *link) { | |
f579559b TG |
235 | int r; |
236 | ||
f579559b TG |
237 | link->network = network; |
238 | ||
bfa695b5 TG |
239 | if (network->ipv4ll_route) { |
240 | Route *route; | |
241 | ||
242 | r = route_new_static(network, 0, &route); | |
243 | if (r < 0) | |
244 | return r; | |
245 | ||
246 | r = inet_pton(AF_INET, "169.254.0.0", &route->dst_addr.in); | |
247 | if (r == 0) | |
248 | return -EINVAL; | |
249 | if (r < 0) | |
250 | return -errno; | |
251 | ||
252 | route->family = AF_INET; | |
253 | route->dst_prefixlen = 16; | |
254 | route->scope = RT_SCOPE_LINK; | |
255 | route->metrics = IPV4LL_ROUTE_METRIC; | |
256 | route->protocol = RTPROT_STATIC; | |
257 | } | |
258 | ||
bcb7a07e | 259 | if (network->dns || network->ntp) { |
091a364c | 260 | r = link_save(link); |
3bef724f TG |
261 | if (r < 0) |
262 | return r; | |
263 | } | |
264 | ||
f579559b TG |
265 | return 0; |
266 | } | |
02b59d57 | 267 | |
69a93e7d | 268 | int config_parse_netdev(const char *unit, |
02b59d57 TG |
269 | const char *filename, |
270 | unsigned line, | |
271 | const char *section, | |
272 | unsigned section_line, | |
273 | const char *lvalue, | |
274 | int ltype, | |
275 | const char *rvalue, | |
276 | void *data, | |
277 | void *userdata) { | |
278 | Network *network = userdata; | |
31d0ac36 TG |
279 | _cleanup_free_ char *kind_string = NULL; |
280 | char *p; | |
1a436809 | 281 | NetDev *netdev; |
69a93e7d | 282 | NetDevKind kind; |
02b59d57 TG |
283 | int r; |
284 | ||
285 | assert(filename); | |
286 | assert(lvalue); | |
287 | assert(rvalue); | |
288 | assert(data); | |
289 | ||
69a93e7d TG |
290 | kind_string = strdup(lvalue); |
291 | if (!kind_string) | |
292 | return log_oom(); | |
52433f6b | 293 | |
69a93e7d TG |
294 | /* the keys are CamelCase versions of the kind */ |
295 | for (p = kind_string; *p; p++) | |
296 | *p = tolower(*p); | |
52433f6b | 297 | |
69a93e7d TG |
298 | kind = netdev_kind_from_string(kind_string); |
299 | if (kind == _NETDEV_KIND_INVALID) { | |
52433f6b | 300 | log_syntax(unit, LOG_ERR, filename, line, EINVAL, |
69a93e7d | 301 | "Invalid NetDev kind: %s", lvalue); |
52433f6b TG |
302 | return 0; |
303 | } | |
304 | ||
54abf461 TG |
305 | r = netdev_get(network->manager, rvalue, &netdev); |
306 | if (r < 0) { | |
307 | log_syntax(unit, LOG_ERR, filename, line, EINVAL, | |
69a93e7d | 308 | "%s could not be found, ignoring assignment: %s", lvalue, rvalue); |
54abf461 TG |
309 | return 0; |
310 | } | |
311 | ||
69a93e7d | 312 | if (netdev->kind != kind) { |
54abf461 | 313 | log_syntax(unit, LOG_ERR, filename, line, EINVAL, |
69a93e7d | 314 | "NetDev is not a %s, ignoring assignment: %s", lvalue, rvalue); |
54abf461 TG |
315 | return 0; |
316 | } | |
317 | ||
69a93e7d TG |
318 | switch (kind) { |
319 | case NETDEV_KIND_BRIDGE: | |
320 | network->bridge = netdev; | |
54abf461 | 321 | |
69a93e7d TG |
322 | break; |
323 | case NETDEV_KIND_BOND: | |
324 | network->bond = netdev; | |
fe6b2d55 | 325 | |
69a93e7d TG |
326 | break; |
327 | case NETDEV_KIND_VLAN: | |
69a93e7d | 328 | case NETDEV_KIND_MACVLAN: |
326cb406 | 329 | case NETDEV_KIND_VXLAN: |
6a0a2f86 | 330 | r = hashmap_put(network->stacked_netdevs, netdev->ifname, netdev); |
326cb406 SS |
331 | if (r < 0) { |
332 | log_syntax(unit, LOG_ERR, filename, line, EINVAL, | |
6a0a2f86 | 333 | "Can not add VLAN '%s' to network: %s", |
aa9f1140 | 334 | rvalue, strerror(-r)); |
326cb406 SS |
335 | return 0; |
336 | } | |
337 | ||
69a93e7d TG |
338 | break; |
339 | default: | |
340 | assert_not_reached("Can not parse NetDev"); | |
fe6b2d55 TG |
341 | } |
342 | ||
47e2dc31 TG |
343 | netdev_ref(netdev); |
344 | ||
fe6b2d55 TG |
345 | return 0; |
346 | } | |
7951dea2 | 347 | |
6192b846 TG |
348 | int config_parse_domains(const char *unit, |
349 | const char *filename, | |
350 | unsigned line, | |
351 | const char *section, | |
352 | unsigned section_line, | |
353 | const char *lvalue, | |
354 | int ltype, | |
355 | const char *rvalue, | |
356 | void *data, | |
357 | void *userdata) { | |
67272d15 | 358 | Network *network = userdata; |
6192b846 TG |
359 | char ***domains = data; |
360 | char **domain; | |
361 | int r; | |
362 | ||
363 | r = config_parse_strv(unit, filename, line, section, section_line, | |
364 | lvalue, ltype, rvalue, domains, userdata); | |
365 | if (r < 0) | |
366 | return r; | |
367 | ||
368 | strv_uniq(*domains); | |
f15b6e5a | 369 | network->wildcard_domain = !!strv_find(*domains, "*"); |
67272d15 | 370 | |
40274ed6 LP |
371 | STRV_FOREACH(domain, *domains) { |
372 | if (is_localhost(*domain)) | |
373 | log_syntax(unit, LOG_ERR, filename, line, EINVAL, "'localhost' domain names may not be configured, ignoring assignment: %s", *domain); | |
374 | else if (!hostname_is_valid(*domain)) { | |
375 | if (!streq(*domain, "*")) | |
376 | log_syntax(unit, LOG_ERR, filename, line, EINVAL, "domain name is not valid, ignoring assignment: %s", *domain); | |
377 | } else | |
378 | continue; | |
379 | ||
380 | strv_remove(*domains, *domain); | |
381 | ||
382 | /* We removed one entry, make sure we don't skip the next one */ | |
383 | domain--; | |
384 | } | |
f15b6e5a | 385 | |
6192b846 TG |
386 | return 0; |
387 | } | |
388 | ||
7951dea2 SS |
389 | int config_parse_tunnel(const char *unit, |
390 | const char *filename, | |
391 | unsigned line, | |
392 | const char *section, | |
393 | unsigned section_line, | |
394 | const char *lvalue, | |
395 | int ltype, | |
396 | const char *rvalue, | |
397 | void *data, | |
398 | void *userdata) { | |
399 | Network *network = userdata; | |
400 | NetDev *netdev; | |
401 | int r; | |
402 | ||
403 | assert(filename); | |
404 | assert(lvalue); | |
405 | assert(rvalue); | |
406 | assert(data); | |
407 | ||
408 | r = netdev_get(network->manager, rvalue, &netdev); | |
409 | if (r < 0) { | |
410 | log_syntax(unit, LOG_ERR, filename, line, EINVAL, | |
411 | "Tunnel is invalid, ignoring assignment: %s", rvalue); | |
412 | return 0; | |
413 | } | |
414 | ||
415 | if (netdev->kind != NETDEV_KIND_IPIP && | |
416 | netdev->kind != NETDEV_KIND_SIT && | |
a613382b SS |
417 | netdev->kind != NETDEV_KIND_GRE && |
418 | netdev->kind != NETDEV_KIND_VTI) { | |
7951dea2 SS |
419 | log_syntax(unit, LOG_ERR, filename, line, EINVAL, |
420 | "NetDev is not a tunnel, ignoring assignment: %s", rvalue); | |
421 | return 0; | |
422 | } | |
423 | ||
6a0a2f86 TG |
424 | r = hashmap_put(network->stacked_netdevs, netdev->ifname, netdev); |
425 | if (r < 0) { | |
426 | log_syntax(unit, LOG_ERR, filename, line, EINVAL, | |
427 | "Can not add VLAN '%s' to network: %s", | |
428 | rvalue, strerror(-r)); | |
429 | return 0; | |
430 | } | |
431 | ||
432 | netdev_ref(netdev); | |
7951dea2 SS |
433 | |
434 | return 0; | |
435 | } | |
bd8f6538 TG |
436 | |
437 | static const char* const dhcp_support_table[_DHCP_SUPPORT_MAX] = { | |
438 | [DHCP_SUPPORT_NONE] = "none", | |
439 | [DHCP_SUPPORT_BOTH] = "both", | |
440 | [DHCP_SUPPORT_V4] = "v4", | |
441 | [DHCP_SUPPORT_V6] = "v6", | |
442 | }; | |
443 | ||
444 | DEFINE_STRING_TABLE_LOOKUP(dhcp_support, DHCPSupport); | |
445 | ||
446 | int config_parse_dhcp( | |
447 | const char* unit, | |
448 | const char *filename, | |
449 | unsigned line, | |
450 | const char *section, | |
451 | unsigned section_line, | |
452 | const char *lvalue, | |
453 | int ltype, | |
454 | const char *rvalue, | |
455 | void *data, | |
456 | void *userdata) { | |
457 | ||
458 | DHCPSupport *dhcp = data; | |
459 | int k; | |
460 | ||
461 | assert(filename); | |
462 | assert(lvalue); | |
463 | assert(rvalue); | |
464 | assert(data); | |
465 | ||
466 | /* Our enum shall be a superset of booleans, hence first try | |
467 | * to parse as boolean, and then as enum */ | |
468 | ||
469 | k = parse_boolean(rvalue); | |
470 | if (k > 0) | |
471 | *dhcp = DHCP_SUPPORT_BOTH; | |
472 | else if (k == 0) | |
473 | *dhcp = DHCP_SUPPORT_NONE; | |
474 | else { | |
475 | DHCPSupport s; | |
476 | ||
477 | s = dhcp_support_from_string(rvalue); | |
478 | if (s < 0){ | |
479 | log_syntax(unit, LOG_ERR, filename, line, -s, "Failed to parse DHCP option, ignoring: %s", rvalue); | |
480 | return 0; | |
481 | } | |
482 | ||
483 | *dhcp = s; | |
484 | } | |
485 | ||
486 | return 0; | |
487 | } | |
488 | ||
489 | static const char* const llmnr_support_table[_LLMNR_SUPPORT_MAX] = { | |
490 | [LLMNR_SUPPORT_NO] = "no", | |
491 | [LLMNR_SUPPORT_YES] = "yes", | |
492 | [LLMNR_SUPPORT_RESOLVE] = "resolve", | |
493 | }; | |
494 | ||
495 | DEFINE_STRING_TABLE_LOOKUP(llmnr_support, LLMNRSupport); | |
496 | ||
497 | int config_parse_llmnr( | |
498 | const char* unit, | |
499 | const char *filename, | |
500 | unsigned line, | |
501 | const char *section, | |
502 | unsigned section_line, | |
503 | const char *lvalue, | |
504 | int ltype, | |
505 | const char *rvalue, | |
506 | void *data, | |
507 | void *userdata) { | |
508 | ||
509 | LLMNRSupport *llmnr = data; | |
510 | int k; | |
511 | ||
512 | assert(filename); | |
513 | assert(lvalue); | |
514 | assert(rvalue); | |
515 | assert(data); | |
516 | ||
517 | /* Our enum shall be a superset of booleans, hence first try | |
518 | * to parse as boolean, and then as enum */ | |
519 | ||
520 | k = parse_boolean(rvalue); | |
521 | if (k > 0) | |
522 | *llmnr = LLMNR_SUPPORT_YES; | |
523 | else if (k == 0) | |
524 | *llmnr = LLMNR_SUPPORT_NO; | |
525 | else { | |
526 | LLMNRSupport s; | |
527 | ||
528 | s = llmnr_support_from_string(rvalue); | |
529 | if (s < 0){ | |
530 | log_syntax(unit, LOG_ERR, filename, line, -s, "Failed to parse LLMNR option, ignoring: %s", rvalue); | |
531 | return 0; | |
532 | } | |
533 | ||
534 | *llmnr = s; | |
535 | } | |
536 | ||
537 | return 0; | |
538 | } |