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1 | /* SPDX-License-Identifier: LGPL-2.1+ */ | |
2 | ||
3 | #include <net/if.h> | |
4 | #include <linux/fib_rules.h> | |
5 | ||
6 | #include "alloc-util.h" | |
7 | #include "conf-parser.h" | |
8 | #include "fileio.h" | |
9 | #include "ip-protocol-list.h" | |
10 | #include "networkd-routing-policy-rule.h" | |
11 | #include "netlink-util.h" | |
12 | #include "networkd-manager.h" | |
13 | #include "parse-util.h" | |
14 | #include "socket-util.h" | |
15 | #include "string-util.h" | |
16 | #include "strv.h" | |
17 | ||
18 | int routing_policy_rule_new(RoutingPolicyRule **ret) { | |
19 | RoutingPolicyRule *rule; | |
20 | ||
21 | rule = new(RoutingPolicyRule, 1); | |
22 | if (!rule) | |
23 | return -ENOMEM; | |
24 | ||
25 | *rule = (RoutingPolicyRule) { | |
26 | .family = AF_INET, | |
27 | .table = RT_TABLE_MAIN, | |
28 | }; | |
29 | ||
30 | *ret = rule; | |
31 | return 0; | |
32 | } | |
33 | ||
34 | void routing_policy_rule_free(RoutingPolicyRule *rule) { | |
35 | ||
36 | if (!rule) | |
37 | return; | |
38 | ||
39 | if (rule->network) { | |
40 | LIST_REMOVE(rules, rule->network->rules, rule); | |
41 | assert(rule->network->n_rules > 0); | |
42 | rule->network->n_rules--; | |
43 | ||
44 | if (rule->section) | |
45 | hashmap_remove(rule->network->rules_by_section, rule->section); | |
46 | } | |
47 | ||
48 | if (rule->manager) { | |
49 | if (set_get(rule->manager->rules, rule) == rule) | |
50 | set_remove(rule->manager->rules, rule); | |
51 | if (set_get(rule->manager->rules_foreign, rule) == rule) | |
52 | set_remove(rule->manager->rules_foreign, rule); | |
53 | } | |
54 | ||
55 | network_config_section_free(rule->section); | |
56 | free(rule->iif); | |
57 | free(rule->oif); | |
58 | free(rule); | |
59 | } | |
60 | ||
61 | static void routing_policy_rule_hash_func(const RoutingPolicyRule *rule, struct siphash *state) { | |
62 | assert(rule); | |
63 | ||
64 | siphash24_compress(&rule->family, sizeof(rule->family), state); | |
65 | ||
66 | switch (rule->family) { | |
67 | case AF_INET: | |
68 | case AF_INET6: | |
69 | ||
70 | siphash24_compress(&rule->from, FAMILY_ADDRESS_SIZE(rule->family), state); | |
71 | siphash24_compress(&rule->from_prefixlen, sizeof(rule->from_prefixlen), state); | |
72 | ||
73 | siphash24_compress(&rule->to, FAMILY_ADDRESS_SIZE(rule->family), state); | |
74 | siphash24_compress(&rule->to_prefixlen, sizeof(rule->to_prefixlen), state); | |
75 | ||
76 | siphash24_compress(&rule->tos, sizeof(rule->tos), state); | |
77 | siphash24_compress(&rule->fwmark, sizeof(rule->fwmark), state); | |
78 | siphash24_compress(&rule->table, sizeof(rule->table), state); | |
79 | ||
80 | siphash24_compress(&rule->protocol, sizeof(rule->protocol), state); | |
81 | siphash24_compress(&rule->sport, sizeof(rule->sport), state); | |
82 | siphash24_compress(&rule->dport, sizeof(rule->dport), state); | |
83 | ||
84 | if (rule->iif) | |
85 | siphash24_compress(rule->iif, strlen(rule->iif), state); | |
86 | ||
87 | if (rule->oif) | |
88 | siphash24_compress(rule->oif, strlen(rule->oif), state); | |
89 | ||
90 | break; | |
91 | default: | |
92 | /* treat any other address family as AF_UNSPEC */ | |
93 | break; | |
94 | } | |
95 | } | |
96 | ||
97 | static int routing_policy_rule_compare_func(const RoutingPolicyRule *a, const RoutingPolicyRule *b) { | |
98 | int r; | |
99 | ||
100 | r = CMP(a->family, b->family); | |
101 | if (r != 0) | |
102 | return r; | |
103 | ||
104 | switch (a->family) { | |
105 | case AF_INET: | |
106 | case AF_INET6: | |
107 | r = CMP(a->from_prefixlen, b->from_prefixlen); | |
108 | if (r != 0) | |
109 | return r; | |
110 | ||
111 | r = CMP(a->to_prefixlen, b->to_prefixlen); | |
112 | if (r != 0) | |
113 | return r; | |
114 | ||
115 | r = CMP(a->tos, b->tos); | |
116 | if (r != 0) | |
117 | return r; | |
118 | ||
119 | r = CMP(a->fwmask, b->fwmask); | |
120 | if (r != 0) | |
121 | return r; | |
122 | ||
123 | r = CMP(a->table, b->table); | |
124 | if (r != 0) | |
125 | return r; | |
126 | ||
127 | r = strcmp_ptr(a->iif, b->iif); | |
128 | if (!r) | |
129 | return r; | |
130 | ||
131 | r = strcmp_ptr(a->oif, b->oif); | |
132 | if (!r) | |
133 | return r; | |
134 | ||
135 | r = CMP(a->protocol, b->protocol); | |
136 | if (r != 0) | |
137 | return r; | |
138 | ||
139 | r = memcmp(&a->sport, &b->sport, sizeof(a->sport)); | |
140 | if (r != 0) | |
141 | return r; | |
142 | ||
143 | r = memcmp(&a->dport, &b->dport, sizeof(a->dport)); | |
144 | if (r != 0) | |
145 | return r; | |
146 | ||
147 | r = memcmp(&a->from, &b->from, FAMILY_ADDRESS_SIZE(a->family)); | |
148 | if (r != 0) | |
149 | return r; | |
150 | ||
151 | return memcmp(&a->to, &b->to, FAMILY_ADDRESS_SIZE(a->family)); | |
152 | ||
153 | default: | |
154 | /* treat any other address family as AF_UNSPEC */ | |
155 | return 0; | |
156 | } | |
157 | } | |
158 | ||
159 | DEFINE_PRIVATE_HASH_OPS(routing_policy_rule_hash_ops, RoutingPolicyRule, routing_policy_rule_hash_func, routing_policy_rule_compare_func); | |
160 | ||
161 | int routing_policy_rule_get(Manager *m, | |
162 | int family, | |
163 | const union in_addr_union *from, | |
164 | uint8_t from_prefixlen, | |
165 | const union in_addr_union *to, | |
166 | uint8_t to_prefixlen, | |
167 | uint8_t tos, | |
168 | uint32_t fwmark, | |
169 | uint32_t table, | |
170 | const char *iif, | |
171 | const char *oif, | |
172 | uint8_t protocol, | |
173 | struct fib_rule_port_range *sport, | |
174 | struct fib_rule_port_range *dport, | |
175 | RoutingPolicyRule **ret) { | |
176 | ||
177 | RoutingPolicyRule rule, *existing; | |
178 | ||
179 | assert_return(m, -1); | |
180 | ||
181 | rule = (RoutingPolicyRule) { | |
182 | .family = family, | |
183 | .from = *from, | |
184 | .from_prefixlen = from_prefixlen, | |
185 | .to = *to, | |
186 | .to_prefixlen = to_prefixlen, | |
187 | .tos = tos, | |
188 | .fwmark = fwmark, | |
189 | .table = table, | |
190 | .iif = (char*) iif, | |
191 | .oif = (char*) oif, | |
192 | .protocol = protocol, | |
193 | .sport = *sport, | |
194 | .dport = *dport, | |
195 | }; | |
196 | ||
197 | existing = set_get(m->rules, &rule); | |
198 | if (existing) { | |
199 | if (ret) | |
200 | *ret = existing; | |
201 | return 1; | |
202 | } | |
203 | ||
204 | existing = set_get(m->rules_foreign, &rule); | |
205 | if (existing) { | |
206 | if (ret) | |
207 | *ret = existing; | |
208 | return 0; | |
209 | } | |
210 | ||
211 | return -ENOENT; | |
212 | } | |
213 | ||
214 | int routing_policy_rule_make_local(Manager *m, RoutingPolicyRule *rule) { | |
215 | int r; | |
216 | ||
217 | assert(m); | |
218 | ||
219 | if (set_contains(m->rules_foreign, rule)) { | |
220 | set_remove(m->rules_foreign, rule); | |
221 | ||
222 | r = set_ensure_allocated(&m->rules, &routing_policy_rule_hash_ops); | |
223 | if (r < 0) | |
224 | return r; | |
225 | ||
226 | return set_put(m->rules, rule); | |
227 | } | |
228 | ||
229 | return -ENOENT; | |
230 | } | |
231 | ||
232 | static int routing_policy_rule_add_internal(Manager *m, | |
233 | Set **rules, | |
234 | int family, | |
235 | const union in_addr_union *from, | |
236 | uint8_t from_prefixlen, | |
237 | const union in_addr_union *to, | |
238 | uint8_t to_prefixlen, | |
239 | uint8_t tos, | |
240 | uint32_t fwmark, | |
241 | uint32_t table, | |
242 | const char *_iif, | |
243 | const char *_oif, | |
244 | uint8_t protocol, | |
245 | const struct fib_rule_port_range *sport, | |
246 | const struct fib_rule_port_range *dport, | |
247 | RoutingPolicyRule **ret) { | |
248 | ||
249 | _cleanup_(routing_policy_rule_freep) RoutingPolicyRule *rule = NULL; | |
250 | _cleanup_free_ char *iif = NULL, *oif = NULL; | |
251 | int r; | |
252 | ||
253 | assert_return(rules, -EINVAL); | |
254 | ||
255 | if (_iif) { | |
256 | iif = strdup(_iif); | |
257 | if (!iif) | |
258 | return -ENOMEM; | |
259 | } | |
260 | ||
261 | if (_oif) { | |
262 | oif = strdup(_oif); | |
263 | if (!oif) | |
264 | return -ENOMEM; | |
265 | } | |
266 | ||
267 | r = routing_policy_rule_new(&rule); | |
268 | if (r < 0) | |
269 | return r; | |
270 | ||
271 | rule->manager = m; | |
272 | rule->family = family; | |
273 | rule->from = *from; | |
274 | rule->from_prefixlen = from_prefixlen; | |
275 | rule->to = *to; | |
276 | rule->to_prefixlen = to_prefixlen; | |
277 | rule->tos = tos; | |
278 | rule->fwmark = fwmark; | |
279 | rule->table = table; | |
280 | rule->iif = TAKE_PTR(iif); | |
281 | rule->oif = TAKE_PTR(oif); | |
282 | rule->protocol = protocol; | |
283 | rule->sport = *sport; | |
284 | rule->dport = *dport; | |
285 | ||
286 | r = set_ensure_allocated(rules, &routing_policy_rule_hash_ops); | |
287 | if (r < 0) | |
288 | return r; | |
289 | ||
290 | r = set_put(*rules, rule); | |
291 | if (r < 0) | |
292 | return r; | |
293 | ||
294 | if (ret) | |
295 | *ret = rule; | |
296 | ||
297 | TAKE_PTR(rule); | |
298 | return 0; | |
299 | } | |
300 | ||
301 | int routing_policy_rule_add(Manager *m, | |
302 | int family, | |
303 | const union in_addr_union *from, | |
304 | uint8_t from_prefixlen, | |
305 | const union in_addr_union *to, | |
306 | uint8_t to_prefixlen, | |
307 | uint8_t tos, | |
308 | uint32_t fwmark, | |
309 | uint32_t table, | |
310 | const char *iif, | |
311 | const char *oif, | |
312 | uint8_t protocol, | |
313 | const struct fib_rule_port_range *sport, | |
314 | const struct fib_rule_port_range *dport, | |
315 | RoutingPolicyRule **ret) { | |
316 | ||
317 | return routing_policy_rule_add_internal(m, &m->rules, family, from, from_prefixlen, to, to_prefixlen, tos, fwmark, table, iif, oif, protocol, sport, dport, ret); | |
318 | } | |
319 | ||
320 | int routing_policy_rule_add_foreign(Manager *m, | |
321 | int family, | |
322 | const union in_addr_union *from, | |
323 | uint8_t from_prefixlen, | |
324 | const union in_addr_union *to, | |
325 | uint8_t to_prefixlen, | |
326 | uint8_t tos, | |
327 | uint32_t fwmark, | |
328 | uint32_t table, | |
329 | const char *iif, | |
330 | const char *oif, | |
331 | uint8_t protocol, | |
332 | const struct fib_rule_port_range *sport, | |
333 | const struct fib_rule_port_range *dport, | |
334 | RoutingPolicyRule **ret) { | |
335 | return routing_policy_rule_add_internal(m, &m->rules_foreign, family, from, from_prefixlen, to, to_prefixlen, tos, fwmark, table, iif, oif, protocol, sport, dport, ret); | |
336 | } | |
337 | ||
338 | static int routing_policy_rule_remove_handler(sd_netlink *rtnl, sd_netlink_message *m, Link *link) { | |
339 | int r; | |
340 | ||
341 | assert(m); | |
342 | assert(link); | |
343 | assert(link->ifname); | |
344 | ||
345 | link->routing_policy_rule_remove_messages--; | |
346 | ||
347 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) | |
348 | return 1; | |
349 | ||
350 | r = sd_netlink_message_get_errno(m); | |
351 | if (r < 0) | |
352 | log_link_warning_errno(link, r, "Could not drop routing policy rule: %m"); | |
353 | ||
354 | return 1; | |
355 | } | |
356 | ||
357 | int routing_policy_rule_remove(RoutingPolicyRule *routing_policy_rule, Link *link, link_netlink_message_handler_t callback) { | |
358 | _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *m = NULL; | |
359 | int r; | |
360 | ||
361 | assert(routing_policy_rule); | |
362 | assert(link); | |
363 | assert(link->manager); | |
364 | assert(link->manager->rtnl); | |
365 | assert(link->ifindex > 0); | |
366 | assert(IN_SET(routing_policy_rule->family, AF_INET, AF_INET6)); | |
367 | ||
368 | r = sd_rtnl_message_new_routing_policy_rule(link->manager->rtnl, &m, RTM_DELRULE, routing_policy_rule->family); | |
369 | if (r < 0) | |
370 | return log_error_errno(r, "Could not allocate RTM_DELRULE message: %m"); | |
371 | ||
372 | if (in_addr_is_null(routing_policy_rule->family, &routing_policy_rule->from) == 0) { | |
373 | r = netlink_message_append_in_addr_union(m, FRA_SRC, routing_policy_rule->family, &routing_policy_rule->from); | |
374 | if (r < 0) | |
375 | return log_error_errno(r, "Could not append FRA_SRC attribute: %m"); | |
376 | ||
377 | r = sd_rtnl_message_routing_policy_rule_set_rtm_src_prefixlen(m, routing_policy_rule->from_prefixlen); | |
378 | if (r < 0) | |
379 | return log_error_errno(r, "Could not set source prefix length: %m"); | |
380 | } | |
381 | ||
382 | if (in_addr_is_null(routing_policy_rule->family, &routing_policy_rule->to) == 0) { | |
383 | r = netlink_message_append_in_addr_union(m, FRA_DST, routing_policy_rule->family, &routing_policy_rule->to); | |
384 | if (r < 0) | |
385 | return log_error_errno(r, "Could not append FRA_DST attribute: %m"); | |
386 | ||
387 | r = sd_rtnl_message_routing_policy_rule_set_rtm_dst_prefixlen(m, routing_policy_rule->to_prefixlen); | |
388 | if (r < 0) | |
389 | return log_error_errno(r, "Could not set destination prefix length: %m"); | |
390 | } | |
391 | ||
392 | r = netlink_call_async(link->manager->rtnl, NULL, m, | |
393 | callback ?: routing_policy_rule_remove_handler, | |
394 | link_netlink_destroy_callback, link); | |
395 | if (r < 0) | |
396 | return log_error_errno(r, "Could not send rtnetlink message: %m"); | |
397 | ||
398 | link_ref(link); | |
399 | ||
400 | return 0; | |
401 | } | |
402 | ||
403 | static int routing_policy_rule_new_static(Network *network, const char *filename, unsigned section_line, RoutingPolicyRule **ret) { | |
404 | _cleanup_(routing_policy_rule_freep) RoutingPolicyRule *rule = NULL; | |
405 | _cleanup_(network_config_section_freep) NetworkConfigSection *n = NULL; | |
406 | int r; | |
407 | ||
408 | assert(network); | |
409 | assert(ret); | |
410 | assert(!!filename == (section_line > 0)); | |
411 | ||
412 | if (filename) { | |
413 | r = network_config_section_new(filename, section_line, &n); | |
414 | if (r < 0) | |
415 | return r; | |
416 | ||
417 | rule = hashmap_get(network->rules_by_section, n); | |
418 | if (rule) { | |
419 | *ret = TAKE_PTR(rule); | |
420 | ||
421 | return 0; | |
422 | } | |
423 | } | |
424 | ||
425 | r = routing_policy_rule_new(&rule); | |
426 | if (r < 0) | |
427 | return r; | |
428 | ||
429 | rule->network = network; | |
430 | LIST_APPEND(rules, network->rules, rule); | |
431 | network->n_rules++; | |
432 | ||
433 | if (filename) { | |
434 | rule->section = TAKE_PTR(n); | |
435 | ||
436 | r = hashmap_ensure_allocated(&network->rules_by_section, &network_config_hash_ops); | |
437 | if (r < 0) | |
438 | return r; | |
439 | ||
440 | r = hashmap_put(network->rules_by_section, rule->section, rule); | |
441 | if (r < 0) | |
442 | return r; | |
443 | } | |
444 | ||
445 | *ret = TAKE_PTR(rule); | |
446 | ||
447 | return 0; | |
448 | } | |
449 | ||
450 | static int routing_policy_rule_handler(sd_netlink *rtnl, sd_netlink_message *m, Link *link) { | |
451 | int r; | |
452 | ||
453 | assert(rtnl); | |
454 | assert(m); | |
455 | assert(link); | |
456 | assert(link->ifname); | |
457 | assert(link->routing_policy_rule_messages > 0); | |
458 | ||
459 | link->routing_policy_rule_messages--; | |
460 | ||
461 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) | |
462 | return 1; | |
463 | ||
464 | r = sd_netlink_message_get_errno(m); | |
465 | if (r < 0 && r != -EEXIST) | |
466 | log_link_warning_errno(link, r, "Could not add routing policy rule: %m"); | |
467 | ||
468 | if (link->routing_policy_rule_messages == 0) { | |
469 | log_link_debug(link, "Routing policy rule configured"); | |
470 | link->routing_policy_rules_configured = true; | |
471 | link_check_ready(link); | |
472 | } | |
473 | ||
474 | return 1; | |
475 | } | |
476 | ||
477 | int routing_policy_rule_configure(RoutingPolicyRule *rule, Link *link, link_netlink_message_handler_t callback) { | |
478 | _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *m = NULL; | |
479 | int r; | |
480 | ||
481 | assert(rule); | |
482 | assert(link); | |
483 | assert(link->ifindex > 0); | |
484 | assert(link->manager); | |
485 | assert(link->manager->rtnl); | |
486 | ||
487 | if (rule->family == AF_INET6 && manager_sysctl_ipv6_enabled(link->manager) == 0) { | |
488 | log_link_warning(link, "An IPv6 routing policy rule is requested, but IPv6 is disabled by sysctl, ignoring."); | |
489 | return 0; | |
490 | } | |
491 | ||
492 | r = sd_rtnl_message_new_routing_policy_rule(link->manager->rtnl, &m, RTM_NEWRULE, rule->family); | |
493 | if (r < 0) | |
494 | return log_error_errno(r, "Could not allocate RTM_NEWRULE message: %m"); | |
495 | ||
496 | if (in_addr_is_null(rule->family, &rule->from) == 0) { | |
497 | r = netlink_message_append_in_addr_union(m, FRA_SRC, rule->family, &rule->from); | |
498 | if (r < 0) | |
499 | return log_error_errno(r, "Could not append FRA_SRC attribute: %m"); | |
500 | ||
501 | r = sd_rtnl_message_routing_policy_rule_set_rtm_src_prefixlen(m, rule->from_prefixlen); | |
502 | if (r < 0) | |
503 | return log_error_errno(r, "Could not set source prefix length: %m"); | |
504 | } | |
505 | ||
506 | if (in_addr_is_null(rule->family, &rule->to) == 0) { | |
507 | r = netlink_message_append_in_addr_union(m, FRA_DST, rule->family, &rule->to); | |
508 | if (r < 0) | |
509 | return log_error_errno(r, "Could not append FRA_DST attribute: %m"); | |
510 | ||
511 | r = sd_rtnl_message_routing_policy_rule_set_rtm_dst_prefixlen(m, rule->to_prefixlen); | |
512 | if (r < 0) | |
513 | return log_error_errno(r, "Could not set destination prefix length: %m"); | |
514 | } | |
515 | ||
516 | r = sd_netlink_message_append_u32(m, FRA_PRIORITY, rule->priority); | |
517 | if (r < 0) | |
518 | return log_error_errno(r, "Could not append FRA_PRIORITY attribute: %m"); | |
519 | ||
520 | if (rule->tos > 0) { | |
521 | r = sd_rtnl_message_routing_policy_rule_set_tos(m, rule->tos); | |
522 | if (r < 0) | |
523 | return log_error_errno(r, "Could not set ip rule tos: %m"); | |
524 | } | |
525 | ||
526 | if (rule->table < 256) { | |
527 | r = sd_rtnl_message_routing_policy_rule_set_table(m, rule->table); | |
528 | if (r < 0) | |
529 | return log_error_errno(r, "Could not set ip rule table: %m"); | |
530 | } else { | |
531 | r = sd_rtnl_message_routing_policy_rule_set_table(m, RT_TABLE_UNSPEC); | |
532 | if (r < 0) | |
533 | return log_error_errno(r, "Could not set ip rule table: %m"); | |
534 | ||
535 | r = sd_netlink_message_append_u32(m, FRA_TABLE, rule->table); | |
536 | if (r < 0) | |
537 | return log_error_errno(r, "Could not append FRA_TABLE attribute: %m"); | |
538 | } | |
539 | ||
540 | if (rule->fwmark > 0) { | |
541 | r = sd_netlink_message_append_u32(m, FRA_FWMARK, rule->fwmark); | |
542 | if (r < 0) | |
543 | return log_error_errno(r, "Could not append FRA_FWMARK attribute: %m"); | |
544 | } | |
545 | ||
546 | if (rule->fwmask > 0) { | |
547 | r = sd_netlink_message_append_u32(m, FRA_FWMASK, rule->fwmask); | |
548 | if (r < 0) | |
549 | return log_error_errno(r, "Could not append FRA_FWMASK attribute: %m"); | |
550 | } | |
551 | ||
552 | if (rule->iif) { | |
553 | r = sd_netlink_message_append_string(m, FRA_IFNAME, rule->iif); | |
554 | if (r < 0) | |
555 | return log_error_errno(r, "Could not append FRA_IFNAME attribute: %m"); | |
556 | } | |
557 | ||
558 | if (rule->oif) { | |
559 | r = sd_netlink_message_append_string(m, FRA_OIFNAME, rule->oif); | |
560 | if (r < 0) | |
561 | return log_error_errno(r, "Could not append FRA_OIFNAME attribute: %m"); | |
562 | } | |
563 | ||
564 | r = sd_netlink_message_append_u8(m, FRA_IP_PROTO, rule->protocol); | |
565 | if (r < 0) | |
566 | return log_error_errno(r, "Could not append FRA_IP_PROTO attribute: %m"); | |
567 | ||
568 | if (rule->sport.start != 0 || rule->sport.end != 0) { | |
569 | r = sd_netlink_message_append_data(m, FRA_SPORT_RANGE, &rule->sport, sizeof(rule->sport)); | |
570 | if (r < 0) | |
571 | return log_error_errno(r, "Could not append FRA_SPORT_RANGE attribute: %m"); | |
572 | } | |
573 | ||
574 | if (rule->dport.start != 0 || rule->dport.end != 0) { | |
575 | r = sd_netlink_message_append_data(m, FRA_DPORT_RANGE, &rule->dport, sizeof(rule->dport)); | |
576 | if (r < 0) | |
577 | return log_error_errno(r, "Could not append FRA_DPORT_RANGE attribute: %m"); | |
578 | } | |
579 | ||
580 | if (rule->invert_rule) { | |
581 | r = sd_rtnl_message_routing_policy_rule_set_flags(m, FIB_RULE_INVERT); | |
582 | if (r < 0) | |
583 | return log_error_errno(r, "Could not append FIB_RULE_INVERT attribute: %m"); | |
584 | } | |
585 | ||
586 | rule->link = link; | |
587 | ||
588 | r = netlink_call_async(link->manager->rtnl, NULL, m, | |
589 | callback ?: routing_policy_rule_handler, | |
590 | link_netlink_destroy_callback, link); | |
591 | if (r < 0) | |
592 | return log_error_errno(r, "Could not send rtnetlink message: %m"); | |
593 | ||
594 | link_ref(link); | |
595 | ||
596 | r = routing_policy_rule_add(link->manager, rule->family, &rule->from, rule->from_prefixlen, &rule->to, | |
597 | rule->to_prefixlen, rule->tos, rule->fwmark, rule->table, rule->iif, rule->oif, rule->protocol, &rule->sport, &rule->dport, NULL); | |
598 | if (r < 0) | |
599 | return log_error_errno(r, "Could not add rule: %m"); | |
600 | ||
601 | return 1; | |
602 | } | |
603 | ||
604 | static int parse_fwmark_fwmask(const char *s, uint32_t *fwmark, uint32_t *fwmask) { | |
605 | _cleanup_free_ char *f = NULL; | |
606 | char *p; | |
607 | int r; | |
608 | ||
609 | assert(s); | |
610 | ||
611 | f = strdup(s); | |
612 | if (!f) | |
613 | return -ENOMEM; | |
614 | ||
615 | p = strchr(f, '/'); | |
616 | if (p) | |
617 | *p++ = '\0'; | |
618 | ||
619 | r = safe_atou32(f, fwmark); | |
620 | if (r < 0) | |
621 | return log_error_errno(r, "Failed to parse RPDB rule firewall mark, ignoring: %s", f); | |
622 | ||
623 | if (p) { | |
624 | r = safe_atou32(p, fwmask); | |
625 | if (r < 0) | |
626 | return log_error_errno(r, "Failed to parse RPDB rule mask, ignoring: %s", f); | |
627 | } | |
628 | ||
629 | return 0; | |
630 | } | |
631 | ||
632 | int config_parse_routing_policy_rule_tos( | |
633 | const char *unit, | |
634 | const char *filename, | |
635 | unsigned line, | |
636 | const char *section, | |
637 | unsigned section_line, | |
638 | const char *lvalue, | |
639 | int ltype, | |
640 | const char *rvalue, | |
641 | void *data, | |
642 | void *userdata) { | |
643 | ||
644 | _cleanup_(routing_policy_rule_free_or_set_invalidp) RoutingPolicyRule *n = NULL; | |
645 | Network *network = userdata; | |
646 | int r; | |
647 | ||
648 | assert(filename); | |
649 | assert(section); | |
650 | assert(lvalue); | |
651 | assert(rvalue); | |
652 | assert(data); | |
653 | ||
654 | r = routing_policy_rule_new_static(network, filename, section_line, &n); | |
655 | if (r < 0) | |
656 | return r; | |
657 | ||
658 | r = safe_atou8(rvalue, &n->tos); | |
659 | if (r < 0) { | |
660 | log_syntax(unit, LOG_ERR, filename, line, r, "Failed to parse RPDB rule tos, ignoring: %s", rvalue); | |
661 | return 0; | |
662 | } | |
663 | ||
664 | n = NULL; | |
665 | ||
666 | return 0; | |
667 | } | |
668 | ||
669 | int config_parse_routing_policy_rule_priority( | |
670 | const char *unit, | |
671 | const char *filename, | |
672 | unsigned line, | |
673 | const char *section, | |
674 | unsigned section_line, | |
675 | const char *lvalue, | |
676 | int ltype, | |
677 | const char *rvalue, | |
678 | void *data, | |
679 | void *userdata) { | |
680 | ||
681 | _cleanup_(routing_policy_rule_free_or_set_invalidp) RoutingPolicyRule *n = NULL; | |
682 | Network *network = userdata; | |
683 | int r; | |
684 | ||
685 | assert(filename); | |
686 | assert(section); | |
687 | assert(lvalue); | |
688 | assert(rvalue); | |
689 | assert(data); | |
690 | ||
691 | r = routing_policy_rule_new_static(network, filename, section_line, &n); | |
692 | if (r < 0) | |
693 | return r; | |
694 | ||
695 | r = safe_atou32(rvalue, &n->priority); | |
696 | if (r < 0) { | |
697 | log_syntax(unit, LOG_ERR, filename, line, r, "Failed to parse RPDB rule priority, ignoring: %s", rvalue); | |
698 | return 0; | |
699 | } | |
700 | ||
701 | n = NULL; | |
702 | ||
703 | return 0; | |
704 | } | |
705 | ||
706 | int config_parse_routing_policy_rule_table( | |
707 | const char *unit, | |
708 | const char *filename, | |
709 | unsigned line, | |
710 | const char *section, | |
711 | unsigned section_line, | |
712 | const char *lvalue, | |
713 | int ltype, | |
714 | const char *rvalue, | |
715 | void *data, | |
716 | void *userdata) { | |
717 | ||
718 | _cleanup_(routing_policy_rule_free_or_set_invalidp) RoutingPolicyRule *n = NULL; | |
719 | Network *network = userdata; | |
720 | int r; | |
721 | ||
722 | assert(filename); | |
723 | assert(section); | |
724 | assert(lvalue); | |
725 | assert(rvalue); | |
726 | assert(data); | |
727 | ||
728 | r = routing_policy_rule_new_static(network, filename, section_line, &n); | |
729 | if (r < 0) | |
730 | return r; | |
731 | ||
732 | r = safe_atou32(rvalue, &n->table); | |
733 | if (r < 0) { | |
734 | log_syntax(unit, LOG_ERR, filename, line, r, "Failed to parse RPDB rule table, ignoring: %s", rvalue); | |
735 | return 0; | |
736 | } | |
737 | ||
738 | n = NULL; | |
739 | ||
740 | return 0; | |
741 | } | |
742 | ||
743 | int config_parse_routing_policy_rule_fwmark_mask( | |
744 | const char *unit, | |
745 | const char *filename, | |
746 | unsigned line, | |
747 | const char *section, | |
748 | unsigned section_line, | |
749 | const char *lvalue, | |
750 | int ltype, | |
751 | const char *rvalue, | |
752 | void *data, | |
753 | void *userdata) { | |
754 | ||
755 | _cleanup_(routing_policy_rule_free_or_set_invalidp) RoutingPolicyRule *n = NULL; | |
756 | Network *network = userdata; | |
757 | int r; | |
758 | ||
759 | assert(filename); | |
760 | assert(section); | |
761 | assert(lvalue); | |
762 | assert(rvalue); | |
763 | assert(data); | |
764 | ||
765 | r = routing_policy_rule_new_static(network, filename, section_line, &n); | |
766 | if (r < 0) | |
767 | return r; | |
768 | ||
769 | r = parse_fwmark_fwmask(rvalue, &n->fwmark, &n->fwmask); | |
770 | if (r < 0) { | |
771 | log_syntax(unit, LOG_ERR, filename, line, r, "Failed to parse RPDB rule firewall mark or mask, ignoring: %s", rvalue); | |
772 | return 0; | |
773 | } | |
774 | ||
775 | n = NULL; | |
776 | ||
777 | return 0; | |
778 | } | |
779 | ||
780 | int config_parse_routing_policy_rule_prefix( | |
781 | const char *unit, | |
782 | const char *filename, | |
783 | unsigned line, | |
784 | const char *section, | |
785 | unsigned section_line, | |
786 | const char *lvalue, | |
787 | int ltype, | |
788 | const char *rvalue, | |
789 | void *data, | |
790 | void *userdata) { | |
791 | ||
792 | _cleanup_(routing_policy_rule_free_or_set_invalidp) RoutingPolicyRule *n = NULL; | |
793 | Network *network = userdata; | |
794 | union in_addr_union *buffer; | |
795 | uint8_t *prefixlen; | |
796 | int r; | |
797 | ||
798 | assert(filename); | |
799 | assert(section); | |
800 | assert(lvalue); | |
801 | assert(rvalue); | |
802 | assert(data); | |
803 | ||
804 | r = routing_policy_rule_new_static(network, filename, section_line, &n); | |
805 | if (r < 0) | |
806 | return r; | |
807 | ||
808 | if (streq(lvalue, "To")) { | |
809 | buffer = &n->to; | |
810 | prefixlen = &n->to_prefixlen; | |
811 | } else { | |
812 | buffer = &n->from; | |
813 | prefixlen = &n->from_prefixlen; | |
814 | } | |
815 | ||
816 | r = in_addr_prefix_from_string_auto(rvalue, &n->family, buffer, prefixlen); | |
817 | if (r < 0) { | |
818 | log_syntax(unit, LOG_ERR, filename, line, r, "RPDB rule prefix is invalid, ignoring assignment: %s", rvalue); | |
819 | return 0; | |
820 | } | |
821 | ||
822 | n = NULL; | |
823 | ||
824 | return 0; | |
825 | } | |
826 | ||
827 | int config_parse_routing_policy_rule_device( | |
828 | const char *unit, | |
829 | const char *filename, | |
830 | unsigned line, | |
831 | const char *section, | |
832 | unsigned section_line, | |
833 | const char *lvalue, | |
834 | int ltype, | |
835 | const char *rvalue, | |
836 | void *data, | |
837 | void *userdata) { | |
838 | ||
839 | _cleanup_(routing_policy_rule_free_or_set_invalidp) RoutingPolicyRule *n = NULL; | |
840 | Network *network = userdata; | |
841 | int r; | |
842 | ||
843 | assert(filename); | |
844 | assert(section); | |
845 | assert(lvalue); | |
846 | assert(rvalue); | |
847 | assert(data); | |
848 | ||
849 | r = routing_policy_rule_new_static(network, filename, section_line, &n); | |
850 | if (r < 0) | |
851 | return r; | |
852 | ||
853 | if (!ifname_valid(rvalue)) { | |
854 | log_syntax(unit, LOG_ERR, filename, line, r, "Failed to parse '%s' interface name, ignoring: %s", lvalue, rvalue); | |
855 | return 0; | |
856 | } | |
857 | ||
858 | if (streq(lvalue, "IncomingInterface")) { | |
859 | r = free_and_strdup(&n->iif, rvalue); | |
860 | if (r < 0) | |
861 | return log_oom(); | |
862 | } else { | |
863 | r = free_and_strdup(&n->oif, rvalue); | |
864 | if (r < 0) | |
865 | return log_oom(); | |
866 | } | |
867 | ||
868 | n = NULL; | |
869 | ||
870 | return 0; | |
871 | } | |
872 | ||
873 | int config_parse_routing_policy_rule_port_range( | |
874 | const char *unit, | |
875 | const char *filename, | |
876 | unsigned line, | |
877 | const char *section, | |
878 | unsigned section_line, | |
879 | const char *lvalue, | |
880 | int ltype, | |
881 | const char *rvalue, | |
882 | void *data, | |
883 | void *userdata) { | |
884 | _cleanup_(routing_policy_rule_free_or_set_invalidp) RoutingPolicyRule *n = NULL; | |
885 | Network *network = userdata; | |
886 | uint16_t low, high; | |
887 | int r; | |
888 | ||
889 | assert(filename); | |
890 | assert(section); | |
891 | assert(lvalue); | |
892 | assert(rvalue); | |
893 | assert(data); | |
894 | ||
895 | r = routing_policy_rule_new_static(network, filename, section_line, &n); | |
896 | if (r < 0) | |
897 | return r; | |
898 | ||
899 | r = parse_ip_port_range(rvalue, &low, &high); | |
900 | if (r < 0) { | |
901 | log_syntax(unit, LOG_ERR, filename, line, r, "Failed to parse routing policy rule port range '%s'", rvalue); | |
902 | return 0; | |
903 | } | |
904 | ||
905 | if (streq(lvalue, "SourcePort")) { | |
906 | n->sport.start = low; | |
907 | n->sport.end = high; | |
908 | } else { | |
909 | n->dport.start = low; | |
910 | n->dport.end = high; | |
911 | } | |
912 | ||
913 | n = NULL; | |
914 | ||
915 | return 0; | |
916 | } | |
917 | ||
918 | int config_parse_routing_policy_rule_ip_protocol( | |
919 | const char *unit, | |
920 | const char *filename, | |
921 | unsigned line, | |
922 | const char *section, | |
923 | unsigned section_line, | |
924 | const char *lvalue, | |
925 | int ltype, | |
926 | const char *rvalue, | |
927 | void *data, | |
928 | void *userdata) { | |
929 | ||
930 | _cleanup_(routing_policy_rule_free_or_set_invalidp) RoutingPolicyRule *n = NULL; | |
931 | Network *network = userdata; | |
932 | int r; | |
933 | ||
934 | assert(filename); | |
935 | assert(section); | |
936 | assert(lvalue); | |
937 | assert(rvalue); | |
938 | assert(data); | |
939 | ||
940 | r = routing_policy_rule_new_static(network, filename, section_line, &n); | |
941 | if (r < 0) | |
942 | return r; | |
943 | ||
944 | r = parse_ip_protocol(rvalue); | |
945 | if (r < 0) { | |
946 | log_syntax(unit, LOG_ERR, filename, line, r, "Failed to parse IP protocol '%s' for routing policy rule, ignoring: %m", rvalue); | |
947 | return 0; | |
948 | } | |
949 | ||
950 | n->protocol = r; | |
951 | ||
952 | n = NULL; | |
953 | ||
954 | return 0; | |
955 | } | |
956 | ||
957 | int config_parse_routing_policy_rule_invert( | |
958 | const char *unit, | |
959 | const char *filename, | |
960 | unsigned line, | |
961 | const char *section, | |
962 | unsigned section_line, | |
963 | const char *lvalue, | |
964 | int ltype, | |
965 | const char *rvalue, | |
966 | void *data, | |
967 | void *userdata) { | |
968 | ||
969 | _cleanup_(routing_policy_rule_free_or_set_invalidp) RoutingPolicyRule *n = NULL; | |
970 | Network *network = userdata; | |
971 | int r; | |
972 | ||
973 | assert(filename); | |
974 | assert(section); | |
975 | assert(lvalue); | |
976 | assert(rvalue); | |
977 | assert(data); | |
978 | ||
979 | r = routing_policy_rule_new_static(network, filename, section_line, &n); | |
980 | if (r < 0) | |
981 | return r; | |
982 | ||
983 | r = parse_boolean(rvalue); | |
984 | if (r < 0) { | |
985 | log_syntax(unit, LOG_ERR, filename, line, r, "Failed to parse RPDB rule invert, ignoring: %s", rvalue); | |
986 | return 0; | |
987 | } | |
988 | ||
989 | n->invert_rule = r; | |
990 | ||
991 | n = NULL; | |
992 | ||
993 | return 0; | |
994 | } | |
995 | ||
996 | static int routing_policy_rule_read_full_file(const char *state_file, char **ret) { | |
997 | _cleanup_free_ char *s = NULL; | |
998 | size_t size; | |
999 | int r; | |
1000 | ||
1001 | assert(state_file); | |
1002 | ||
1003 | r = read_full_file(state_file, &s, &size); | |
1004 | if (r == -ENOENT) | |
1005 | return -ENODATA; | |
1006 | if (r < 0) | |
1007 | return r; | |
1008 | if (size <= 0) | |
1009 | return -ENODATA; | |
1010 | ||
1011 | *ret = TAKE_PTR(s); | |
1012 | ||
1013 | return size; | |
1014 | } | |
1015 | ||
1016 | int routing_policy_serialize_rules(Set *rules, FILE *f) { | |
1017 | RoutingPolicyRule *rule = NULL; | |
1018 | Iterator i; | |
1019 | int r; | |
1020 | ||
1021 | assert(f); | |
1022 | ||
1023 | SET_FOREACH(rule, rules, i) { | |
1024 | _cleanup_free_ char *from_str = NULL, *to_str = NULL; | |
1025 | bool space = false; | |
1026 | ||
1027 | fputs("RULE=", f); | |
1028 | ||
1029 | if (!in_addr_is_null(rule->family, &rule->from)) { | |
1030 | r = in_addr_to_string(rule->family, &rule->from, &from_str); | |
1031 | if (r < 0) | |
1032 | return r; | |
1033 | ||
1034 | fprintf(f, "from=%s/%hhu", | |
1035 | from_str, rule->from_prefixlen); | |
1036 | space = true; | |
1037 | } | |
1038 | ||
1039 | if (!in_addr_is_null(rule->family, &rule->to)) { | |
1040 | r = in_addr_to_string(rule->family, &rule->to, &to_str); | |
1041 | if (r < 0) | |
1042 | return r; | |
1043 | ||
1044 | fprintf(f, "%sto=%s/%hhu", | |
1045 | space ? " " : "", | |
1046 | to_str, rule->to_prefixlen); | |
1047 | space = true; | |
1048 | } | |
1049 | ||
1050 | if (rule->tos != 0) { | |
1051 | fprintf(f, "%stos=%hhu", | |
1052 | space ? " " : "", | |
1053 | rule->tos); | |
1054 | space = true; | |
1055 | } | |
1056 | ||
1057 | if (rule->fwmark != 0) { | |
1058 | fprintf(f, "%sfwmark=%"PRIu32"/%"PRIu32, | |
1059 | space ? " " : "", | |
1060 | rule->fwmark, rule->fwmask); | |
1061 | space = true; | |
1062 | } | |
1063 | ||
1064 | if (rule->iif) { | |
1065 | fprintf(f, "%siif=%s", | |
1066 | space ? " " : "", | |
1067 | rule->iif); | |
1068 | space = true; | |
1069 | } | |
1070 | ||
1071 | if (rule->oif) { | |
1072 | fprintf(f, "%soif=%s", | |
1073 | space ? " " : "", | |
1074 | rule->oif); | |
1075 | space = true; | |
1076 | } | |
1077 | ||
1078 | if (rule->protocol != 0) { | |
1079 | fprintf(f, "%sprotocol=%hhu", | |
1080 | space ? " " : "", | |
1081 | rule->protocol); | |
1082 | space = true; | |
1083 | } | |
1084 | ||
1085 | if (rule->sport.start != 0 || rule->sport.end != 0) { | |
1086 | fprintf(f, "%ssourcesport=%"PRIu16"-%"PRIu16, | |
1087 | space ? " " : "", | |
1088 | rule->sport.start, rule->sport.end); | |
1089 | space = true; | |
1090 | } | |
1091 | ||
1092 | if (rule->dport.start != 0 || rule->dport.end != 0) { | |
1093 | fprintf(f, "%sdestinationport=%"PRIu16"-%"PRIu16, | |
1094 | space ? " " : "", | |
1095 | rule->dport.start, rule->dport.end); | |
1096 | space = true; | |
1097 | } | |
1098 | ||
1099 | fprintf(f, "%stable=%"PRIu32 "\n", | |
1100 | space ? " " : "", | |
1101 | rule->table); | |
1102 | } | |
1103 | ||
1104 | return 0; | |
1105 | } | |
1106 | ||
1107 | int routing_policy_load_rules(const char *state_file, Set **rules) { | |
1108 | _cleanup_strv_free_ char **l = NULL; | |
1109 | _cleanup_free_ char *data = NULL; | |
1110 | uint16_t low = 0, high = 0; | |
1111 | const char *p; | |
1112 | char **i; | |
1113 | int r; | |
1114 | ||
1115 | assert(state_file); | |
1116 | assert(rules); | |
1117 | ||
1118 | r = routing_policy_rule_read_full_file(state_file, &data); | |
1119 | if (r <= 0) | |
1120 | return r; | |
1121 | ||
1122 | l = strv_split_newlines(data); | |
1123 | if (!l) | |
1124 | return -ENOMEM; | |
1125 | ||
1126 | r = set_ensure_allocated(rules, &routing_policy_rule_hash_ops); | |
1127 | if (r < 0) | |
1128 | return r; | |
1129 | ||
1130 | STRV_FOREACH(i, l) { | |
1131 | _cleanup_(routing_policy_rule_freep) RoutingPolicyRule *rule = NULL; | |
1132 | ||
1133 | p = startswith(*i, "RULE="); | |
1134 | if (!p) | |
1135 | continue; | |
1136 | ||
1137 | r = routing_policy_rule_new(&rule); | |
1138 | if (r < 0) | |
1139 | return r; | |
1140 | ||
1141 | for (;;) { | |
1142 | _cleanup_free_ char *word = NULL, *a = NULL, *b = NULL; | |
1143 | ||
1144 | r = extract_first_word(&p, &word, NULL, 0); | |
1145 | if (r < 0) | |
1146 | return r; | |
1147 | if (r == 0) | |
1148 | break; | |
1149 | ||
1150 | r = split_pair(word, "=", &a, &b); | |
1151 | if (r < 0) | |
1152 | continue; | |
1153 | ||
1154 | if (STR_IN_SET(a, "from", "to")) { | |
1155 | union in_addr_union *buffer; | |
1156 | uint8_t *prefixlen; | |
1157 | ||
1158 | if (streq(a, "to")) { | |
1159 | buffer = &rule->to; | |
1160 | prefixlen = &rule->to_prefixlen; | |
1161 | } else { | |
1162 | buffer = &rule->from; | |
1163 | prefixlen = &rule->from_prefixlen; | |
1164 | } | |
1165 | ||
1166 | r = in_addr_prefix_from_string_auto(b, &rule->family, buffer, prefixlen); | |
1167 | if (r < 0) { | |
1168 | log_error_errno(r, "RPDB rule prefix is invalid, ignoring assignment: %s", b); | |
1169 | continue; | |
1170 | } | |
1171 | ||
1172 | } else if (streq(a, "tos")) { | |
1173 | r = safe_atou8(b, &rule->tos); | |
1174 | if (r < 0) { | |
1175 | log_error_errno(r, "Failed to parse RPDB rule tos, ignoring: %s", b); | |
1176 | continue; | |
1177 | } | |
1178 | } else if (streq(a, "table")) { | |
1179 | r = safe_atou32(b, &rule->table); | |
1180 | if (r < 0) { | |
1181 | log_error_errno(r, "Failed to parse RPDB rule table, ignoring: %s", b); | |
1182 | continue; | |
1183 | } | |
1184 | } else if (streq(a, "fwmark")) { | |
1185 | ||
1186 | r = parse_fwmark_fwmask(b, &rule->fwmark, &rule->fwmask); | |
1187 | if (r < 0) { | |
1188 | log_error_errno(r, "Failed to parse RPDB rule firewall mark or mask, ignoring: %s", a); | |
1189 | continue; | |
1190 | } | |
1191 | } else if (streq(a, "iif")) { | |
1192 | ||
1193 | if (free_and_strdup(&rule->iif, b) < 0) | |
1194 | return log_oom(); | |
1195 | ||
1196 | } else if (streq(a, "oif")) { | |
1197 | ||
1198 | if (free_and_strdup(&rule->oif, b) < 0) | |
1199 | return log_oom(); | |
1200 | } else if (streq(a, "protocol")) { | |
1201 | r = safe_atou8(b, &rule->protocol); | |
1202 | if (r < 0) { | |
1203 | log_error_errno(r, "Failed to parse RPDB rule protocol, ignoring: %s", b); | |
1204 | continue; | |
1205 | } | |
1206 | } else if (streq(a, "sourceport")) { | |
1207 | ||
1208 | r = parse_ip_port_range(b, &low, &high); | |
1209 | if (r < 0) { | |
1210 | log_error_errno(r, "Invalid routing policy rule source port range, ignoring assignment:'%s'", b); | |
1211 | continue; | |
1212 | } | |
1213 | ||
1214 | rule->sport.start = low; | |
1215 | rule->sport.end = high; | |
1216 | ||
1217 | } else if (streq(a, "destinationport")) { | |
1218 | ||
1219 | r = parse_ip_port_range(b, &low, &high); | |
1220 | if (r < 0) { | |
1221 | log_error_errno(r, "Invalid routing policy rule destination port range, ignoring assignment:'%s'", b); | |
1222 | continue; | |
1223 | } | |
1224 | ||
1225 | rule->dport.start = low; | |
1226 | rule->dport.end = high; | |
1227 | } | |
1228 | } | |
1229 | ||
1230 | r = set_put(*rules, rule); | |
1231 | if (r < 0) { | |
1232 | log_warning_errno(r, "Failed to add RPDB rule to saved DB, ignoring: %s", p); | |
1233 | continue; | |
1234 | } | |
1235 | ||
1236 | rule = NULL; | |
1237 | } | |
1238 | ||
1239 | return 0; | |
1240 | } | |
1241 | ||
1242 | static bool manager_links_have_routing_policy_rule(Manager *m, RoutingPolicyRule *rule) { | |
1243 | RoutingPolicyRule *link_rule; | |
1244 | Iterator i; | |
1245 | Link *link; | |
1246 | ||
1247 | assert(m); | |
1248 | assert(rule); | |
1249 | ||
1250 | HASHMAP_FOREACH(link, m->links, i) { | |
1251 | if (!link->network) | |
1252 | continue; | |
1253 | ||
1254 | LIST_FOREACH(rules, link_rule, link->network->rules) | |
1255 | if (routing_policy_rule_compare_func(link_rule, rule) == 0) | |
1256 | return true; | |
1257 | } | |
1258 | ||
1259 | return false; | |
1260 | } | |
1261 | ||
1262 | void routing_policy_rule_purge(Manager *m, Link *link) { | |
1263 | RoutingPolicyRule *rule, *existing; | |
1264 | Iterator i; | |
1265 | int r; | |
1266 | ||
1267 | assert(m); | |
1268 | assert(link); | |
1269 | ||
1270 | SET_FOREACH(rule, m->rules_saved, i) { | |
1271 | existing = set_get(m->rules_foreign, rule); | |
1272 | if (!existing) | |
1273 | continue; /* Saved rule does not exist anymore. */ | |
1274 | ||
1275 | if (manager_links_have_routing_policy_rule(m, existing)) | |
1276 | continue; /* Existing links have the saved rule. */ | |
1277 | ||
1278 | /* Existing links do not have the saved rule. Let's drop the rule now, and re-configure it | |
1279 | * later when it is requested. */ | |
1280 | ||
1281 | r = routing_policy_rule_remove(existing, link, NULL); | |
1282 | if (r < 0) { | |
1283 | log_warning_errno(r, "Could not remove routing policy rules: %m"); | |
1284 | continue; | |
1285 | } | |
1286 | ||
1287 | link->routing_policy_rule_remove_messages++; | |
1288 | ||
1289 | assert_se(set_remove(m->rules_foreign, existing) == existing); | |
1290 | routing_policy_rule_free(existing); | |
1291 | } | |
1292 | } |