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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 | ||
22 | #include <net/if.h> | |
23 | ||
24 | #include "networkd.h" | |
25 | ||
26 | #include "utf8.h" | |
27 | #include "util.h" | |
28 | #include "conf-parser.h" | |
29 | #include "net-util.h" | |
30 | ||
f048a16b | 31 | int address_new_static(Network *network, unsigned section, Address **ret) { |
f579559b TG |
32 | _cleanup_address_free_ Address *address = NULL; |
33 | ||
6ae115c1 TG |
34 | if (section) { |
35 | uint64_t key = section; | |
36 | address = hashmap_get(network->addresses_by_section, &key); | |
37 | if (address) { | |
38 | *ret = address; | |
39 | address = NULL; | |
40 | ||
41 | return 0; | |
42 | } | |
43 | } | |
44 | ||
f579559b TG |
45 | address = new0(Address, 1); |
46 | if (!address) | |
47 | return -ENOMEM; | |
48 | ||
801bd9e8 | 49 | address->family = AF_UNSPEC; |
5c1d3fc9 | 50 | address->scope = RT_SCOPE_UNIVERSE; |
801bd9e8 | 51 | |
f579559b TG |
52 | address->network = network; |
53 | ||
f048a16b | 54 | LIST_PREPEND(static_addresses, network->static_addresses, address); |
f579559b | 55 | |
6ae115c1 TG |
56 | if (section) { |
57 | address->section = section; | |
58 | hashmap_put(network->addresses_by_section, &address->section, address); | |
59 | } | |
60 | ||
f579559b TG |
61 | *ret = address; |
62 | address = NULL; | |
63 | ||
64 | return 0; | |
65 | } | |
66 | ||
f048a16b TG |
67 | int address_new_dynamic(Address **ret) { |
68 | _cleanup_address_free_ Address *address = NULL; | |
69 | ||
70 | address = new0(Address, 1); | |
71 | if (!address) | |
72 | return -ENOMEM; | |
73 | ||
801bd9e8 | 74 | address->family = AF_UNSPEC; |
5c1d3fc9 | 75 | address->scope = RT_SCOPE_UNIVERSE; |
801bd9e8 | 76 | |
f048a16b TG |
77 | *ret = address; |
78 | address = NULL; | |
79 | ||
80 | return 0; | |
81 | } | |
82 | ||
f579559b TG |
83 | void address_free(Address *address) { |
84 | if (!address) | |
85 | return; | |
86 | ||
f048a16b TG |
87 | if (address->network) { |
88 | LIST_REMOVE(static_addresses, address->network->static_addresses, address); | |
f579559b | 89 | |
f048a16b TG |
90 | if (address->section) |
91 | hashmap_remove(address->network->addresses_by_section, | |
92 | &address->section); | |
93 | } | |
6ae115c1 | 94 | |
f579559b TG |
95 | free(address); |
96 | } | |
97 | ||
407fe036 TG |
98 | int address_drop(Address *address, Link *link, |
99 | sd_rtnl_message_handler_t callback) { | |
cf6a8911 | 100 | _cleanup_rtnl_message_unref_ sd_rtnl_message *req = NULL; |
407fe036 TG |
101 | int r; |
102 | ||
103 | assert(address); | |
104 | assert(address->family == AF_INET || address->family == AF_INET6); | |
105 | assert(link); | |
106 | assert(link->ifindex > 0); | |
107 | assert(link->manager); | |
108 | assert(link->manager->rtnl); | |
109 | ||
151b9b96 LP |
110 | r = sd_rtnl_message_new_addr(link->manager->rtnl, &req, RTM_DELADDR, |
111 | link->ifindex, address->family); | |
407fe036 TG |
112 | if (r < 0) { |
113 | log_error("Could not allocate RTM_DELADDR message: %s", | |
114 | strerror(-r)); | |
115 | return r; | |
116 | } | |
117 | ||
5a723174 TG |
118 | r = sd_rtnl_message_addr_set_prefixlen(req, address->prefixlen); |
119 | if (r < 0) { | |
120 | log_error("Could not set prefixlen: %s", strerror(-r)); | |
121 | return r; | |
122 | } | |
123 | ||
407fe036 TG |
124 | if (address->family == AF_INET) |
125 | r = sd_rtnl_message_append_in_addr(req, IFA_LOCAL, &address->in_addr.in); | |
126 | else if (address->family == AF_INET6) | |
127 | r = sd_rtnl_message_append_in6_addr(req, IFA_LOCAL, &address->in_addr.in6); | |
128 | if (r < 0) { | |
129 | log_error("Could not append IFA_LOCAL attribute: %s", | |
130 | strerror(-r)); | |
131 | return r; | |
132 | } | |
133 | ||
134 | r = sd_rtnl_call_async(link->manager->rtnl, req, callback, link, 0, NULL); | |
135 | if (r < 0) { | |
136 | log_error("Could not send rtnetlink message: %s", strerror(-r)); | |
137 | return r; | |
138 | } | |
139 | ||
140 | return 0; | |
141 | } | |
142 | ||
f882c247 TG |
143 | int address_configure(Address *address, Link *link, |
144 | sd_rtnl_message_handler_t callback) { | |
cf6a8911 | 145 | _cleanup_rtnl_message_unref_ sd_rtnl_message *req = NULL; |
f579559b TG |
146 | int r; |
147 | ||
c166a070 TG |
148 | assert(address); |
149 | assert(address->family == AF_INET || address->family == AF_INET6); | |
150 | assert(link); | |
151 | assert(link->ifindex > 0); | |
f882c247 | 152 | assert(link->manager); |
c166a070 | 153 | assert(link->manager->rtnl); |
f882c247 | 154 | |
151b9b96 LP |
155 | r = sd_rtnl_message_new_addr(link->manager->rtnl, &req, RTM_NEWADDR, |
156 | link->ifindex, address->family); | |
f579559b TG |
157 | if (r < 0) { |
158 | log_error("Could not allocate RTM_NEWADDR message: %s", | |
159 | strerror(-r)); | |
160 | return r; | |
161 | } | |
162 | ||
5a723174 TG |
163 | r = sd_rtnl_message_addr_set_prefixlen(req, address->prefixlen); |
164 | if (r < 0) { | |
165 | log_error("Could not set prefixlen: %s", strerror(-r)); | |
166 | return r; | |
167 | } | |
168 | ||
169 | r = sd_rtnl_message_addr_set_flags(req, IFA_F_PERMANENT); | |
170 | if (r < 0) { | |
171 | log_error("Could not set flags: %s", strerror(-r)); | |
172 | return r; | |
173 | } | |
174 | ||
5c1d3fc9 | 175 | r = sd_rtnl_message_addr_set_scope(req, address->scope); |
5a723174 TG |
176 | if (r < 0) { |
177 | log_error("Could not set scope: %s", strerror(-r)); | |
178 | return r; | |
179 | } | |
180 | ||
0a0dc69b TG |
181 | if (address->family == AF_INET) |
182 | r = sd_rtnl_message_append_in_addr(req, IFA_LOCAL, &address->in_addr.in); | |
183 | else if (address->family == AF_INET6) | |
184 | r = sd_rtnl_message_append_in6_addr(req, IFA_LOCAL, &address->in_addr.in6); | |
f579559b TG |
185 | if (r < 0) { |
186 | log_error("Could not append IFA_LOCAL attribute: %s", | |
187 | strerror(-r)); | |
188 | return r; | |
189 | } | |
190 | ||
191 | if (address->family == AF_INET) { | |
eb0ea358 | 192 | r = sd_rtnl_message_append_in_addr(req, IFA_BROADCAST, &address->broadcast); |
f579559b TG |
193 | if (r < 0) { |
194 | log_error("Could not append IFA_BROADCAST attribute: %s", | |
195 | strerror(-r)); | |
196 | return r; | |
197 | } | |
198 | } | |
199 | ||
200 | if (address->label) { | |
0a0dc69b | 201 | r = sd_rtnl_message_append_string(req, IFA_LABEL, address->label); |
f579559b TG |
202 | if (r < 0) { |
203 | log_error("Could not append IFA_LABEL attribute: %s", | |
204 | strerror(-r)); | |
205 | return r; | |
206 | } | |
207 | } | |
208 | ||
f882c247 | 209 | r = sd_rtnl_call_async(link->manager->rtnl, req, callback, link, 0, NULL); |
f579559b | 210 | if (r < 0) { |
f882c247 TG |
211 | log_error("Could not send rtnetlink message: %s", strerror(-r)); |
212 | return r; | |
f579559b TG |
213 | } |
214 | ||
f579559b TG |
215 | return 0; |
216 | } | |
217 | ||
3bef724f TG |
218 | int config_parse_dns(const char *unit, |
219 | const char *filename, | |
220 | unsigned line, | |
221 | const char *section, | |
222 | unsigned section_line, | |
223 | const char *lvalue, | |
224 | int ltype, | |
225 | const char *rvalue, | |
226 | void *data, | |
227 | void *userdata) { | |
06f021a8 | 228 | Set **dns = data; |
3bef724f TG |
229 | _cleanup_address_free_ Address *n = NULL; |
230 | int r; | |
231 | ||
232 | assert(filename); | |
233 | assert(section); | |
234 | assert(lvalue); | |
235 | assert(rvalue); | |
236 | assert(data); | |
237 | ||
238 | r = address_new_dynamic(&n); | |
239 | if (r < 0) | |
240 | return r; | |
241 | ||
242 | r = net_parse_inaddr(rvalue, &n->family, &n->in_addr); | |
243 | if (r < 0) { | |
244 | log_syntax(unit, LOG_ERR, filename, line, EINVAL, | |
245 | "DNS address is invalid, ignoring assignment: %s", rvalue); | |
246 | return 0; | |
247 | } | |
248 | ||
06f021a8 | 249 | set_put(*dns, n); |
3bef724f TG |
250 | n = NULL; |
251 | ||
252 | return 0; | |
253 | } | |
254 | ||
eb0ea358 TG |
255 | int config_parse_broadcast(const char *unit, |
256 | const char *filename, | |
257 | unsigned line, | |
258 | const char *section, | |
259 | unsigned section_line, | |
260 | const char *lvalue, | |
261 | int ltype, | |
262 | const char *rvalue, | |
263 | void *data, | |
264 | void *userdata) { | |
265 | Network *network = userdata; | |
266 | _cleanup_address_free_ Address *n = NULL; | |
267 | _cleanup_free_ char *address = NULL; | |
268 | int r; | |
269 | ||
270 | assert(filename); | |
271 | assert(section); | |
272 | assert(lvalue); | |
273 | assert(rvalue); | |
274 | assert(data); | |
275 | ||
276 | r = address_new_static(network, section_line, &n); | |
277 | if (r < 0) | |
278 | return r; | |
279 | ||
482e2ac1 TG |
280 | if (n->family == AF_INET6) { |
281 | log_syntax(unit, LOG_ERR, filename, line, EINVAL, | |
282 | "Broadcast is not valid for IPv6 addresses, " | |
283 | "ignoring assignment: %s", address); | |
284 | return 0; | |
285 | } | |
286 | ||
eb0ea358 TG |
287 | r = net_parse_inaddr(address, &n->family, &n->broadcast); |
288 | if (r < 0) { | |
289 | log_syntax(unit, LOG_ERR, filename, line, EINVAL, | |
290 | "Broadcast is invalid, ignoring assignment: %s", address); | |
291 | return 0; | |
292 | } | |
293 | ||
294 | n = NULL; | |
295 | ||
296 | return 0; | |
297 | } | |
298 | ||
f579559b TG |
299 | int config_parse_address(const char *unit, |
300 | const char *filename, | |
301 | unsigned line, | |
302 | const char *section, | |
71a61510 | 303 | unsigned section_line, |
f579559b TG |
304 | const char *lvalue, |
305 | int ltype, | |
306 | const char *rvalue, | |
307 | void *data, | |
308 | void *userdata) { | |
6ae115c1 | 309 | Network *network = userdata; |
f579559b TG |
310 | _cleanup_address_free_ Address *n = NULL; |
311 | _cleanup_free_ char *address = NULL; | |
312 | const char *e; | |
313 | int r; | |
314 | ||
315 | assert(filename); | |
6ae115c1 | 316 | assert(section); |
f579559b TG |
317 | assert(lvalue); |
318 | assert(rvalue); | |
319 | assert(data); | |
320 | ||
92fe133a TG |
321 | if (streq(section, "Network")) { |
322 | /* we are not in an Address section, so treat | |
323 | * this as the special '0' section */ | |
324 | section_line = 0; | |
325 | } | |
326 | ||
f048a16b | 327 | r = address_new_static(network, section_line, &n); |
f579559b TG |
328 | if (r < 0) |
329 | return r; | |
330 | ||
331 | /* Address=address/prefixlen */ | |
332 | ||
333 | /* prefixlen */ | |
334 | e = strchr(rvalue, '/'); | |
335 | if (e) { | |
336 | unsigned i; | |
337 | r = safe_atou(e + 1, &i); | |
338 | if (r < 0) { | |
339 | log_syntax(unit, LOG_ERR, filename, line, EINVAL, | |
340 | "Interface prefix length is invalid, " | |
341 | "ignoring assignment: %s", e + 1); | |
342 | return 0; | |
343 | } | |
344 | ||
345 | n->prefixlen = (unsigned char) i; | |
8cd11a0f | 346 | |
f579559b TG |
347 | address = strndup(rvalue, e - rvalue); |
348 | if (!address) | |
349 | return log_oom(); | |
350 | } else { | |
351 | address = strdup(rvalue); | |
352 | if (!address) | |
353 | return log_oom(); | |
354 | } | |
355 | ||
356 | r = net_parse_inaddr(address, &n->family, &n->in_addr); | |
357 | if (r < 0) { | |
358 | log_syntax(unit, LOG_ERR, filename, line, EINVAL, | |
359 | "Address is invalid, ignoring assignment: %s", address); | |
360 | return 0; | |
361 | } | |
362 | ||
eb0ea358 TG |
363 | if (n->family == AF_INET && !n->broadcast.s_addr) |
364 | n->broadcast.s_addr = n->in_addr.in.s_addr | | |
365 | htonl(0xfffffffflu >> n->prefixlen); | |
366 | ||
f579559b TG |
367 | n = NULL; |
368 | ||
369 | return 0; | |
370 | } | |
6ae115c1 TG |
371 | |
372 | int config_parse_label(const char *unit, | |
373 | const char *filename, | |
374 | unsigned line, | |
375 | const char *section, | |
376 | unsigned section_line, | |
377 | const char *lvalue, | |
378 | int ltype, | |
379 | const char *rvalue, | |
380 | void *data, | |
381 | void *userdata) { | |
382 | Network *network = userdata; | |
383 | _cleanup_address_free_ Address *n = NULL; | |
6ae115c1 TG |
384 | char *label; |
385 | int r; | |
386 | ||
387 | assert(filename); | |
388 | assert(section); | |
389 | assert(lvalue); | |
390 | assert(rvalue); | |
391 | assert(data); | |
392 | ||
f048a16b | 393 | r = address_new_static(network, section_line, &n); |
6ae115c1 TG |
394 | if (r < 0) |
395 | return r; | |
396 | ||
397 | label = strdup(rvalue); | |
398 | if (!label) | |
399 | return log_oom(); | |
400 | ||
401 | if (!ascii_is_valid(label) || strlen(label) >= IFNAMSIZ) { | |
402 | log_syntax(unit, LOG_ERR, filename, line, EINVAL, | |
403 | "Interface label is not ASCII clean or is too" | |
404 | " long, ignoring assignment: %s", rvalue); | |
405 | free(label); | |
406 | return 0; | |
407 | } | |
408 | ||
409 | free(n->label); | |
410 | if (*label) | |
411 | n->label = label; | |
412 | else { | |
413 | free(label); | |
414 | n->label = NULL; | |
415 | } | |
416 | ||
417 | n = NULL; | |
418 | ||
419 | return 0; | |
420 | } |