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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 | ||
f579559b TG |
24 | #include "utf8.h" |
25 | #include "util.h" | |
26 | #include "conf-parser.h" | |
5a8bcb67 | 27 | #include "fw-util.h" |
c6f7c917 | 28 | #include "network-internal.h" |
5a8bcb67 LP |
29 | #include "networkd.h" |
30 | #include "networkd-link.h" | |
f579559b | 31 | |
aba496a5 UTL |
32 | static void address_init(Address *address) { |
33 | assert(address); | |
34 | ||
35 | address->family = AF_UNSPEC; | |
36 | address->scope = RT_SCOPE_UNIVERSE; | |
37 | address->cinfo.ifa_prefered = CACHE_INFO_INFINITY_LIFE_TIME; | |
38 | address->cinfo.ifa_valid = CACHE_INFO_INFINITY_LIFE_TIME; | |
39 | } | |
40 | ||
f048a16b | 41 | int address_new_static(Network *network, unsigned section, Address **ret) { |
f579559b TG |
42 | _cleanup_address_free_ Address *address = NULL; |
43 | ||
6ae115c1 | 44 | if (section) { |
16aa63a0 | 45 | address = hashmap_get(network->addresses_by_section, UINT_TO_PTR(section)); |
6ae115c1 TG |
46 | if (address) { |
47 | *ret = address; | |
48 | address = NULL; | |
49 | ||
50 | return 0; | |
51 | } | |
52 | } | |
53 | ||
f579559b TG |
54 | address = new0(Address, 1); |
55 | if (!address) | |
56 | return -ENOMEM; | |
57 | ||
aba496a5 | 58 | address_init(address); |
801bd9e8 | 59 | |
f579559b TG |
60 | address->network = network; |
61 | ||
1e39ff92 | 62 | LIST_APPEND(addresses, network->static_addresses, address); |
f579559b | 63 | |
6ae115c1 TG |
64 | if (section) { |
65 | address->section = section; | |
16aa63a0 TG |
66 | hashmap_put(network->addresses_by_section, |
67 | UINT_TO_PTR(address->section), address); | |
6ae115c1 TG |
68 | } |
69 | ||
f579559b TG |
70 | *ret = address; |
71 | address = NULL; | |
72 | ||
73 | return 0; | |
74 | } | |
75 | ||
f048a16b TG |
76 | int address_new_dynamic(Address **ret) { |
77 | _cleanup_address_free_ Address *address = NULL; | |
78 | ||
79 | address = new0(Address, 1); | |
80 | if (!address) | |
81 | return -ENOMEM; | |
82 | ||
aba496a5 | 83 | address_init(address); |
801bd9e8 | 84 | |
f048a16b TG |
85 | *ret = address; |
86 | address = NULL; | |
87 | ||
88 | return 0; | |
89 | } | |
90 | ||
f579559b TG |
91 | void address_free(Address *address) { |
92 | if (!address) | |
93 | return; | |
94 | ||
f048a16b | 95 | if (address->network) { |
3d3d4255 | 96 | LIST_REMOVE(addresses, address->network->static_addresses, address); |
f579559b | 97 | |
f048a16b TG |
98 | if (address->section) |
99 | hashmap_remove(address->network->addresses_by_section, | |
16aa63a0 | 100 | UINT_TO_PTR(address->section)); |
f048a16b | 101 | } |
6ae115c1 | 102 | |
f579559b TG |
103 | free(address); |
104 | } | |
105 | ||
5a8bcb67 LP |
106 | int address_establish(Address *address, Link *link) { |
107 | bool masq; | |
108 | int r; | |
109 | ||
110 | assert(address); | |
111 | assert(link); | |
112 | ||
113 | masq = link->network && | |
114 | link->network->ip_masquerade && | |
115 | address->family == AF_INET && | |
116 | address->scope < RT_SCOPE_LINK; | |
117 | ||
118 | /* Add firewall entry if this is requested */ | |
fd6d906c | 119 | if (address->ip_masquerade_done != masq) { |
5a8bcb67 LP |
120 | union in_addr_union masked = address->in_addr; |
121 | in_addr_mask(address->family, &masked, address->prefixlen); | |
122 | ||
123 | r = fw_add_masquerade(masq, AF_INET, 0, &masked, address->prefixlen, NULL, NULL, 0); | |
124 | if (r < 0) | |
125 | log_link_warning_errno(link, r, "Could not enable IP masquerading: %m"); | |
126 | ||
fd6d906c | 127 | address->ip_masquerade_done = masq; |
5a8bcb67 LP |
128 | } |
129 | ||
130 | return 0; | |
131 | } | |
132 | ||
133 | int address_release(Address *address, Link *link) { | |
134 | int r; | |
135 | ||
136 | assert(address); | |
137 | assert(link); | |
138 | ||
139 | /* Remove masquerading firewall entry if it was added */ | |
fd6d906c | 140 | if (address->ip_masquerade_done) { |
5a8bcb67 LP |
141 | union in_addr_union masked = address->in_addr; |
142 | in_addr_mask(address->family, &masked, address->prefixlen); | |
143 | ||
144 | r = fw_add_masquerade(false, AF_INET, 0, &masked, address->prefixlen, NULL, NULL, 0); | |
145 | if (r < 0) | |
146 | log_link_warning_errno(link, r, "Failed to disable IP masquerading: %m"); | |
147 | ||
fd6d906c | 148 | address->ip_masquerade_done = false; |
5a8bcb67 LP |
149 | } |
150 | ||
151 | return 0; | |
152 | } | |
153 | ||
407fe036 TG |
154 | int address_drop(Address *address, Link *link, |
155 | sd_rtnl_message_handler_t callback) { | |
cf6a8911 | 156 | _cleanup_rtnl_message_unref_ sd_rtnl_message *req = NULL; |
407fe036 TG |
157 | int r; |
158 | ||
159 | assert(address); | |
160 | assert(address->family == AF_INET || address->family == AF_INET6); | |
161 | assert(link); | |
162 | assert(link->ifindex > 0); | |
163 | assert(link->manager); | |
164 | assert(link->manager->rtnl); | |
165 | ||
5a8bcb67 LP |
166 | address_release(address, link); |
167 | ||
151b9b96 LP |
168 | r = sd_rtnl_message_new_addr(link->manager->rtnl, &req, RTM_DELADDR, |
169 | link->ifindex, address->family); | |
eb56eb9b MS |
170 | if (r < 0) |
171 | return log_error_errno(r, "Could not allocate RTM_DELADDR message: %m"); | |
407fe036 | 172 | |
5a723174 | 173 | r = sd_rtnl_message_addr_set_prefixlen(req, address->prefixlen); |
eb56eb9b MS |
174 | if (r < 0) |
175 | return log_error_errno(r, "Could not set prefixlen: %m"); | |
5a723174 | 176 | |
407fe036 TG |
177 | if (address->family == AF_INET) |
178 | r = sd_rtnl_message_append_in_addr(req, IFA_LOCAL, &address->in_addr.in); | |
179 | else if (address->family == AF_INET6) | |
180 | r = sd_rtnl_message_append_in6_addr(req, IFA_LOCAL, &address->in_addr.in6); | |
eb56eb9b MS |
181 | if (r < 0) |
182 | return log_error_errno(r, "Could not append IFA_LOCAL attribute: %m"); | |
407fe036 TG |
183 | |
184 | r = sd_rtnl_call_async(link->manager->rtnl, req, callback, link, 0, NULL); | |
eb56eb9b MS |
185 | if (r < 0) |
186 | return log_error_errno(r, "Could not send rtnetlink message: %m"); | |
407fe036 | 187 | |
563c69c6 TG |
188 | link_ref(link); |
189 | ||
407fe036 TG |
190 | return 0; |
191 | } | |
192 | ||
aba496a5 UTL |
193 | int address_update(Address *address, Link *link, |
194 | sd_rtnl_message_handler_t callback) { | |
195 | _cleanup_rtnl_message_unref_ sd_rtnl_message *req = NULL; | |
196 | int r; | |
197 | ||
198 | assert(address); | |
199 | assert(address->family == AF_INET || address->family == AF_INET6); | |
200 | assert(link->ifindex > 0); | |
201 | assert(link->manager); | |
202 | assert(link->manager->rtnl); | |
203 | ||
204 | r = sd_rtnl_message_new_addr_update(link->manager->rtnl, &req, | |
205 | link->ifindex, address->family); | |
eb56eb9b MS |
206 | if (r < 0) |
207 | return log_error_errno(r, "Could not allocate RTM_NEWADDR message: %m"); | |
aba496a5 UTL |
208 | |
209 | r = sd_rtnl_message_addr_set_prefixlen(req, address->prefixlen); | |
eb56eb9b MS |
210 | if (r < 0) |
211 | return log_error_errno(r, "Could not set prefixlen: %m"); | |
aba496a5 UTL |
212 | |
213 | r = sd_rtnl_message_addr_set_flags(req, IFA_F_PERMANENT); | |
eb56eb9b MS |
214 | if (r < 0) |
215 | return log_error_errno(r, "Could not set flags: %m"); | |
aba496a5 UTL |
216 | |
217 | r = sd_rtnl_message_addr_set_scope(req, address->scope); | |
eb56eb9b MS |
218 | if (r < 0) |
219 | return log_error_errno(r, "Could not set scope: %m"); | |
aba496a5 UTL |
220 | |
221 | if (address->family == AF_INET) | |
222 | r = sd_rtnl_message_append_in_addr(req, IFA_LOCAL, &address->in_addr.in); | |
223 | else if (address->family == AF_INET6) | |
224 | r = sd_rtnl_message_append_in6_addr(req, IFA_LOCAL, &address->in_addr.in6); | |
eb56eb9b MS |
225 | if (r < 0) |
226 | return log_error_errno(r, "Could not append IFA_LOCAL attribute: %m"); | |
aba496a5 UTL |
227 | |
228 | if (address->family == AF_INET) { | |
229 | r = sd_rtnl_message_append_in_addr(req, IFA_BROADCAST, &address->broadcast); | |
eb56eb9b MS |
230 | if (r < 0) |
231 | return log_error_errno(r, "Could not append IFA_BROADCAST attribute: %m"); | |
aba496a5 UTL |
232 | } |
233 | ||
234 | if (address->label) { | |
235 | r = sd_rtnl_message_append_string(req, IFA_LABEL, address->label); | |
eb56eb9b MS |
236 | if (r < 0) |
237 | return log_error_errno(r, "Could not append IFA_LABEL attribute: %m"); | |
aba496a5 UTL |
238 | } |
239 | ||
240 | r = sd_rtnl_message_append_cache_info(req, IFA_CACHEINFO, &address->cinfo); | |
eb56eb9b MS |
241 | if (r < 0) |
242 | return log_error_errno(r, "Could not append IFA_CACHEINFO attribute: %m"); | |
aba496a5 UTL |
243 | |
244 | r = sd_rtnl_call_async(link->manager->rtnl, req, callback, link, 0, NULL); | |
eb56eb9b MS |
245 | if (r < 0) |
246 | return log_error_errno(r, "Could not send rtnetlink message: %m"); | |
aba496a5 | 247 | |
563c69c6 TG |
248 | link_ref(link); |
249 | ||
aba496a5 UTL |
250 | return 0; |
251 | } | |
252 | ||
11bf3cce LP |
253 | static int address_acquire(Link *link, Address *original, Address **ret) { |
254 | union in_addr_union in_addr = {}; | |
255 | struct in_addr broadcast = {}; | |
0099bc15 | 256 | _cleanup_address_free_ Address *na = NULL; |
11bf3cce LP |
257 | int r; |
258 | ||
259 | assert(link); | |
260 | assert(original); | |
261 | assert(ret); | |
262 | ||
263 | /* Something useful was configured? just use it */ | |
af93291c | 264 | if (in_addr_is_null(original->family, &original->in_addr) <= 0) |
11bf3cce LP |
265 | return 0; |
266 | ||
267 | /* The address is configured to be 0.0.0.0 or [::] by the user? | |
268 | * Then let's acquire something more useful from the pool. */ | |
269 | r = manager_address_pool_acquire(link->manager, original->family, original->prefixlen, &in_addr); | |
270 | if (r < 0) { | |
79008bdd | 271 | log_link_error(link, "Failed to acquire address from pool: %s", strerror(-r)); |
11bf3cce LP |
272 | return r; |
273 | } | |
274 | if (r == 0) { | |
79008bdd | 275 | log_link_error(link, "Couldn't find free address for interface, all taken."); |
11bf3cce LP |
276 | return -EBUSY; |
277 | } | |
278 | ||
279 | if (original->family == AF_INET) { | |
d076c6f9 | 280 | /* Pick first address in range for ourselves ... */ |
11bf3cce LP |
281 | in_addr.in.s_addr = in_addr.in.s_addr | htobe32(1); |
282 | ||
283 | /* .. and use last as broadcast address */ | |
284 | broadcast.s_addr = in_addr.in.s_addr | htobe32(0xFFFFFFFFUL >> original->prefixlen); | |
285 | } else if (original->family == AF_INET6) | |
286 | in_addr.in6.s6_addr[15] |= 1; | |
287 | ||
288 | r = address_new_dynamic(&na); | |
289 | if (r < 0) | |
290 | return r; | |
291 | ||
292 | na->family = original->family; | |
293 | na->prefixlen = original->prefixlen; | |
294 | na->scope = original->scope; | |
295 | na->cinfo = original->cinfo; | |
296 | ||
297 | if (original->label) { | |
298 | na->label = strdup(original->label); | |
0099bc15 | 299 | if (!na->label) |
11bf3cce | 300 | return -ENOMEM; |
11bf3cce LP |
301 | } |
302 | ||
303 | na->broadcast = broadcast; | |
304 | na->in_addr = in_addr; | |
305 | ||
306 | LIST_PREPEND(addresses, link->pool_addresses, na); | |
307 | ||
308 | *ret = na; | |
0099bc15 SS |
309 | na = NULL; |
310 | ||
11bf3cce LP |
311 | return 0; |
312 | } | |
313 | ||
f882c247 TG |
314 | int address_configure(Address *address, Link *link, |
315 | sd_rtnl_message_handler_t callback) { | |
cf6a8911 | 316 | _cleanup_rtnl_message_unref_ sd_rtnl_message *req = NULL; |
f579559b TG |
317 | int r; |
318 | ||
c166a070 TG |
319 | assert(address); |
320 | assert(address->family == AF_INET || address->family == AF_INET6); | |
321 | assert(link); | |
322 | assert(link->ifindex > 0); | |
f882c247 | 323 | assert(link->manager); |
c166a070 | 324 | assert(link->manager->rtnl); |
f882c247 | 325 | |
11bf3cce LP |
326 | r = address_acquire(link, address, &address); |
327 | if (r < 0) | |
328 | return r; | |
329 | ||
151b9b96 LP |
330 | r = sd_rtnl_message_new_addr(link->manager->rtnl, &req, RTM_NEWADDR, |
331 | link->ifindex, address->family); | |
eb56eb9b MS |
332 | if (r < 0) |
333 | return log_error_errno(r, "Could not allocate RTM_NEWADDR message: %m"); | |
f579559b | 334 | |
5a723174 | 335 | r = sd_rtnl_message_addr_set_prefixlen(req, address->prefixlen); |
eb56eb9b MS |
336 | if (r < 0) |
337 | return log_error_errno(r, "Could not set prefixlen: %m"); | |
5a723174 TG |
338 | |
339 | r = sd_rtnl_message_addr_set_flags(req, IFA_F_PERMANENT); | |
eb56eb9b MS |
340 | if (r < 0) |
341 | return log_error_errno(r, "Could not set flags: %m"); | |
5a723174 | 342 | |
5c1d3fc9 | 343 | r = sd_rtnl_message_addr_set_scope(req, address->scope); |
eb56eb9b MS |
344 | if (r < 0) |
345 | return log_error_errno(r, "Could not set scope: %m"); | |
5a723174 | 346 | |
0a0dc69b TG |
347 | if (address->family == AF_INET) |
348 | r = sd_rtnl_message_append_in_addr(req, IFA_LOCAL, &address->in_addr.in); | |
349 | else if (address->family == AF_INET6) | |
350 | r = sd_rtnl_message_append_in6_addr(req, IFA_LOCAL, &address->in_addr.in6); | |
eb56eb9b MS |
351 | if (r < 0) |
352 | return log_error_errno(r, "Could not append IFA_LOCAL attribute: %m"); | |
f579559b | 353 | |
af93291c | 354 | if (!in_addr_is_null(address->family, &address->in_addr_peer)) { |
c081882f SS |
355 | if (address->family == AF_INET) |
356 | r = sd_rtnl_message_append_in_addr(req, IFA_ADDRESS, &address->in_addr_peer.in); | |
357 | else if (address->family == AF_INET6) | |
358 | r = sd_rtnl_message_append_in6_addr(req, IFA_ADDRESS, &address->in_addr_peer.in6); | |
eb56eb9b MS |
359 | if (r < 0) |
360 | return log_error_errno(r, "Could not append IFA_ADDRESS attribute: %m"); | |
c081882f SS |
361 | } else { |
362 | if (address->family == AF_INET) { | |
363 | r = sd_rtnl_message_append_in_addr(req, IFA_BROADCAST, &address->broadcast); | |
eb56eb9b MS |
364 | if (r < 0) |
365 | return log_error_errno(r, "Could not append IFA_BROADCAST attribute: %m"); | |
c081882f | 366 | } |
f579559b TG |
367 | } |
368 | ||
369 | if (address->label) { | |
0a0dc69b | 370 | r = sd_rtnl_message_append_string(req, IFA_LABEL, address->label); |
eb56eb9b MS |
371 | if (r < 0) |
372 | return log_error_errno(r, "Could not append IFA_LABEL attribute: %m"); | |
f579559b TG |
373 | } |
374 | ||
68ceb9df PF |
375 | r = sd_rtnl_message_append_cache_info(req, IFA_CACHEINFO, |
376 | &address->cinfo); | |
eb56eb9b MS |
377 | if (r < 0) |
378 | return log_error_errno(r, "Could not append IFA_CACHEINFO attribute: %m"); | |
68ceb9df | 379 | |
f882c247 | 380 | r = sd_rtnl_call_async(link->manager->rtnl, req, callback, link, 0, NULL); |
eb56eb9b MS |
381 | if (r < 0) |
382 | return log_error_errno(r, "Could not send rtnetlink message: %m"); | |
f579559b | 383 | |
563c69c6 TG |
384 | link_ref(link); |
385 | ||
5a8bcb67 LP |
386 | address_establish(address, link); |
387 | ||
f579559b TG |
388 | return 0; |
389 | } | |
390 | ||
44e7b949 LP |
391 | int config_parse_broadcast( |
392 | const char *unit, | |
eb0ea358 TG |
393 | const char *filename, |
394 | unsigned line, | |
395 | const char *section, | |
396 | unsigned section_line, | |
397 | const char *lvalue, | |
398 | int ltype, | |
399 | const char *rvalue, | |
400 | void *data, | |
401 | void *userdata) { | |
44e7b949 | 402 | |
eb0ea358 TG |
403 | Network *network = userdata; |
404 | _cleanup_address_free_ Address *n = NULL; | |
eb0ea358 TG |
405 | int r; |
406 | ||
407 | assert(filename); | |
408 | assert(section); | |
409 | assert(lvalue); | |
410 | assert(rvalue); | |
411 | assert(data); | |
412 | ||
413 | r = address_new_static(network, section_line, &n); | |
414 | if (r < 0) | |
415 | return r; | |
416 | ||
482e2ac1 TG |
417 | if (n->family == AF_INET6) { |
418 | log_syntax(unit, LOG_ERR, filename, line, EINVAL, | |
44e7b949 | 419 | "Broadcast is not valid for IPv6 addresses, ignoring assignment: %s", rvalue); |
482e2ac1 TG |
420 | return 0; |
421 | } | |
422 | ||
44e7b949 | 423 | r = in_addr_from_string(AF_INET, rvalue, (union in_addr_union*) &n->broadcast); |
eb0ea358 TG |
424 | if (r < 0) { |
425 | log_syntax(unit, LOG_ERR, filename, line, EINVAL, | |
44e7b949 | 426 | "Broadcast is invalid, ignoring assignment: %s", rvalue); |
eb0ea358 TG |
427 | return 0; |
428 | } | |
429 | ||
44e7b949 | 430 | n->family = AF_INET; |
eb0ea358 TG |
431 | n = NULL; |
432 | ||
433 | return 0; | |
434 | } | |
435 | ||
f579559b TG |
436 | int config_parse_address(const char *unit, |
437 | const char *filename, | |
438 | unsigned line, | |
439 | const char *section, | |
71a61510 | 440 | unsigned section_line, |
f579559b TG |
441 | const char *lvalue, |
442 | int ltype, | |
443 | const char *rvalue, | |
444 | void *data, | |
445 | void *userdata) { | |
44e7b949 | 446 | |
6ae115c1 | 447 | Network *network = userdata; |
f579559b | 448 | _cleanup_address_free_ Address *n = NULL; |
44e7b949 LP |
449 | const char *address, *e; |
450 | union in_addr_union buffer; | |
451 | int r, f; | |
f579559b TG |
452 | |
453 | assert(filename); | |
6ae115c1 | 454 | assert(section); |
f579559b TG |
455 | assert(lvalue); |
456 | assert(rvalue); | |
457 | assert(data); | |
458 | ||
92fe133a TG |
459 | if (streq(section, "Network")) { |
460 | /* we are not in an Address section, so treat | |
461 | * this as the special '0' section */ | |
462 | section_line = 0; | |
463 | } | |
464 | ||
f048a16b | 465 | r = address_new_static(network, section_line, &n); |
f579559b TG |
466 | if (r < 0) |
467 | return r; | |
468 | ||
469 | /* Address=address/prefixlen */ | |
470 | ||
471 | /* prefixlen */ | |
472 | e = strchr(rvalue, '/'); | |
473 | if (e) { | |
474 | unsigned i; | |
475 | r = safe_atou(e + 1, &i); | |
476 | if (r < 0) { | |
477 | log_syntax(unit, LOG_ERR, filename, line, EINVAL, | |
a2a85a22 | 478 | "Prefix length is invalid, ignoring assignment: %s", e + 1); |
f579559b TG |
479 | return 0; |
480 | } | |
481 | ||
482 | n->prefixlen = (unsigned char) i; | |
8cd11a0f | 483 | |
44e7b949 LP |
484 | address = strndupa(rvalue, e - rvalue); |
485 | } else | |
486 | address = rvalue; | |
f579559b | 487 | |
44e7b949 | 488 | r = in_addr_from_string_auto(address, &f, &buffer); |
f579559b TG |
489 | if (r < 0) { |
490 | log_syntax(unit, LOG_ERR, filename, line, EINVAL, | |
491 | "Address is invalid, ignoring assignment: %s", address); | |
492 | return 0; | |
493 | } | |
494 | ||
a2a85a22 TG |
495 | if (!e && f == AF_INET) { |
496 | r = in_addr_default_prefixlen(&buffer.in, &n->prefixlen); | |
497 | if (r < 0) { | |
498 | log_syntax(unit, LOG_ERR, filename, line, EINVAL, | |
499 | "Prefix length not specified, and a default one can not be deduced for '%s', ignoring assignment", address); | |
500 | return 0; | |
501 | } | |
502 | } | |
503 | ||
44e7b949 LP |
504 | if (n->family != AF_UNSPEC && f != n->family) { |
505 | log_syntax(unit, LOG_ERR, filename, line, EINVAL, | |
506 | "Address is incompatible, ignoring assignment: %s", address); | |
507 | return 0; | |
508 | } | |
509 | ||
510 | n->family = f; | |
511 | ||
512 | if (streq(lvalue, "Address")) | |
513 | n->in_addr = buffer; | |
514 | else | |
515 | n->in_addr_peer = buffer; | |
516 | ||
517 | if (n->family == AF_INET && n->broadcast.s_addr == 0) | |
518 | n->broadcast.s_addr = n->in_addr.in.s_addr | htonl(0xfffffffflu >> n->prefixlen); | |
eb0ea358 | 519 | |
f579559b TG |
520 | n = NULL; |
521 | ||
522 | return 0; | |
523 | } | |
6ae115c1 TG |
524 | |
525 | int config_parse_label(const char *unit, | |
526 | const char *filename, | |
527 | unsigned line, | |
528 | const char *section, | |
529 | unsigned section_line, | |
530 | const char *lvalue, | |
531 | int ltype, | |
532 | const char *rvalue, | |
533 | void *data, | |
534 | void *userdata) { | |
535 | Network *network = userdata; | |
536 | _cleanup_address_free_ Address *n = NULL; | |
6ae115c1 TG |
537 | char *label; |
538 | int r; | |
539 | ||
540 | assert(filename); | |
541 | assert(section); | |
542 | assert(lvalue); | |
543 | assert(rvalue); | |
544 | assert(data); | |
545 | ||
f048a16b | 546 | r = address_new_static(network, section_line, &n); |
6ae115c1 TG |
547 | if (r < 0) |
548 | return r; | |
549 | ||
550 | label = strdup(rvalue); | |
551 | if (!label) | |
552 | return log_oom(); | |
553 | ||
554 | if (!ascii_is_valid(label) || strlen(label) >= IFNAMSIZ) { | |
555 | log_syntax(unit, LOG_ERR, filename, line, EINVAL, | |
556 | "Interface label is not ASCII clean or is too" | |
557 | " long, ignoring assignment: %s", rvalue); | |
558 | free(label); | |
559 | return 0; | |
560 | } | |
561 | ||
562 | free(n->label); | |
563 | if (*label) | |
564 | n->label = label; | |
565 | else { | |
566 | free(label); | |
567 | n->label = NULL; | |
568 | } | |
569 | ||
570 | n = NULL; | |
571 | ||
572 | return 0; | |
573 | } | |
9505d3c6 TG |
574 | |
575 | bool address_equal(Address *a1, Address *a2) { | |
576 | /* same object */ | |
577 | if (a1 == a2) | |
578 | return true; | |
579 | ||
580 | /* one, but not both, is NULL */ | |
581 | if (!a1 || !a2) | |
582 | return false; | |
583 | ||
584 | if (a1->family != a2->family) | |
585 | return false; | |
586 | ||
587 | switch (a1->family) { | |
588 | /* use the same notion of equality as the kernel does */ | |
589 | case AF_UNSPEC: | |
590 | return true; | |
591 | ||
592 | case AF_INET: | |
593 | if (a1->prefixlen != a2->prefixlen) | |
594 | return false; | |
6cb8e687 ZJS |
595 | else if (a1->prefixlen == 0) |
596 | /* make sure we don't try to shift by 32. | |
597 | * See ISO/IEC 9899:TC3 § 6.5.7.3. */ | |
598 | return true; | |
9505d3c6 TG |
599 | else { |
600 | uint32_t b1, b2; | |
601 | ||
602 | b1 = be32toh(a1->in_addr.in.s_addr); | |
603 | b2 = be32toh(a2->in_addr.in.s_addr); | |
604 | ||
605 | return (b1 >> (32 - a1->prefixlen)) == (b2 >> (32 - a1->prefixlen)); | |
606 | } | |
607 | ||
5a8bcb67 | 608 | case AF_INET6: { |
9505d3c6 TG |
609 | uint64_t *b1, *b2; |
610 | ||
611 | b1 = (uint64_t*)&a1->in_addr.in6; | |
612 | b2 = (uint64_t*)&a2->in_addr.in6; | |
613 | ||
614 | return (((b1[0] ^ b2[0]) | (b1[1] ^ b2[1])) == 0UL); | |
615 | } | |
5a8bcb67 | 616 | |
9505d3c6 TG |
617 | default: |
618 | assert_not_reached("Invalid address family"); | |
619 | } | |
620 | } |