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Commit | Line | Data |
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53e1b683 | 1 | /* SPDX-License-Identifier: LGPL-2.1+ */ |
bce67bbe SS |
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 "networkd-routing-policy-rule.h" | |
10 | #include "netlink-util.h" | |
11 | #include "networkd-manager.h" | |
12 | #include "parse-util.h" | |
13 | #include "socket-util.h" | |
14 | #include "string-util.h" | |
51517f9e | 15 | #include "strv.h" |
bce67bbe SS |
16 | |
17 | int routing_policy_rule_new(RoutingPolicyRule **ret) { | |
18 | RoutingPolicyRule *rule; | |
19 | ||
9d66b48c | 20 | rule = new(RoutingPolicyRule, 1); |
bce67bbe SS |
21 | if (!rule) |
22 | return -ENOMEM; | |
23 | ||
9d66b48c YW |
24 | *rule = (RoutingPolicyRule) { |
25 | .family = AF_INET, | |
26 | .table = RT_TABLE_MAIN, | |
27 | }; | |
bce67bbe SS |
28 | |
29 | *ret = rule; | |
30 | return 0; | |
31 | } | |
32 | ||
33 | void routing_policy_rule_free(RoutingPolicyRule *rule) { | |
34 | ||
35 | if (!rule) | |
36 | return; | |
37 | ||
38 | if (rule->network) { | |
39 | LIST_REMOVE(rules, rule->network->rules, rule); | |
40 | assert(rule->network->n_rules > 0); | |
41 | rule->network->n_rules--; | |
42 | ||
43 | if (rule->section) { | |
44 | hashmap_remove(rule->network->rules_by_section, rule->section); | |
45 | network_config_section_free(rule->section); | |
46 | } | |
47 | ||
36e6e28b SS |
48 | } |
49 | ||
6964cf45 SS |
50 | if (rule->manager) { |
51 | set_remove(rule->manager->rules, rule); | |
52 | set_remove(rule->manager->rules_foreign, rule); | |
bce67bbe SS |
53 | } |
54 | ||
762e2659 SS |
55 | free(rule->iif); |
56 | free(rule->oif); | |
bce67bbe SS |
57 | free(rule); |
58 | } | |
59 | ||
60 | static void routing_policy_rule_hash_func(const void *b, struct siphash *state) { | |
61 | const RoutingPolicyRule *rule = b; | |
62 | ||
63 | assert(rule); | |
64 | ||
65 | siphash24_compress(&rule->family, sizeof(rule->family), state); | |
66 | ||
67 | switch (rule->family) { | |
68 | case AF_INET: | |
69 | case AF_INET6: | |
70 | ||
71 | siphash24_compress(&rule->from, FAMILY_ADDRESS_SIZE(rule->family), state); | |
72 | siphash24_compress(&rule->from_prefixlen, sizeof(rule->from_prefixlen), state); | |
73 | ||
74 | siphash24_compress(&rule->to, FAMILY_ADDRESS_SIZE(rule->family), state); | |
75 | siphash24_compress(&rule->to_prefixlen, sizeof(rule->to_prefixlen), state); | |
76 | ||
77 | siphash24_compress(&rule->tos, sizeof(rule->tos), state); | |
78 | siphash24_compress(&rule->fwmark, sizeof(rule->fwmark), state); | |
79 | siphash24_compress(&rule->table, sizeof(rule->table), state); | |
80 | ||
762e2659 SS |
81 | if (rule->iif) |
82 | siphash24_compress(&rule->iif, strlen(rule->iif), state); | |
83 | ||
84 | if (rule->oif) | |
85 | siphash24_compress(&rule->oif, strlen(rule->oif), state); | |
86 | ||
bce67bbe SS |
87 | break; |
88 | default: | |
89 | /* treat any other address family as AF_UNSPEC */ | |
90 | break; | |
91 | } | |
92 | } | |
93 | ||
94 | static int routing_policy_rule_compare_func(const void *_a, const void *_b) { | |
95 | const RoutingPolicyRule *a = _a, *b = _b; | |
96 | int r; | |
97 | ||
a0edd02e FB |
98 | r = CMP(a->family, b->family); |
99 | if (r != 0) | |
100 | return r; | |
bce67bbe SS |
101 | |
102 | switch (a->family) { | |
103 | case AF_INET: | |
104 | case AF_INET6: | |
a0edd02e FB |
105 | r = CMP(a->from_prefixlen, b->from_prefixlen); |
106 | if (r != 0) | |
107 | return r; | |
108 | ||
109 | r = CMP(a->to_prefixlen, b->to_prefixlen); | |
110 | if (r != 0) | |
111 | return r; | |
112 | ||
113 | r = CMP(a->tos, b->tos); | |
114 | if (r != 0) | |
115 | return r; | |
116 | ||
117 | r = CMP(a->fwmask, b->fwmask); | |
118 | if (r != 0) | |
119 | return r; | |
120 | ||
121 | r = CMP(a->table, b->table); | |
122 | if (r != 0) | |
123 | return r; | |
bce67bbe | 124 | |
762e2659 SS |
125 | r = strcmp_ptr(a->iif, b->iif); |
126 | if (!r) | |
127 | return r; | |
128 | ||
129 | r = strcmp_ptr(a->oif, b->oif); | |
130 | if (!r) | |
131 | return r; | |
132 | ||
bce67bbe SS |
133 | r = memcmp(&a->from, &b->from, FAMILY_ADDRESS_SIZE(a->family)); |
134 | if (r != 0) | |
135 | return r; | |
136 | ||
137 | return memcmp(&a->to, &b->to, FAMILY_ADDRESS_SIZE(a->family)); | |
138 | ||
139 | default: | |
140 | /* treat any other address family as AF_UNSPEC */ | |
141 | return 0; | |
142 | } | |
143 | } | |
144 | ||
145 | const struct hash_ops routing_policy_rule_hash_ops = { | |
146 | .hash = routing_policy_rule_hash_func, | |
147 | .compare = routing_policy_rule_compare_func | |
148 | }; | |
149 | ||
150 | int routing_policy_rule_get(Manager *m, | |
151 | int family, | |
152 | const union in_addr_union *from, | |
153 | uint8_t from_prefixlen, | |
154 | const union in_addr_union *to, | |
155 | uint8_t to_prefixlen, | |
156 | uint8_t tos, | |
157 | uint32_t fwmark, | |
158 | uint32_t table, | |
762e2659 SS |
159 | char *iif, |
160 | char *oif, | |
bce67bbe SS |
161 | RoutingPolicyRule **ret) { |
162 | ||
163 | RoutingPolicyRule rule, *existing; | |
164 | ||
165 | assert_return(m, -1); | |
166 | ||
167 | rule = (RoutingPolicyRule) { | |
168 | .family = family, | |
169 | .from = *from, | |
170 | .from_prefixlen = from_prefixlen, | |
171 | .to = *to, | |
172 | .to_prefixlen = to_prefixlen, | |
173 | .tos = tos, | |
174 | .fwmark = fwmark, | |
175 | .table = table, | |
762e2659 SS |
176 | .iif = iif, |
177 | .oif = oif | |
bce67bbe SS |
178 | }; |
179 | ||
180 | if (m->rules) { | |
181 | existing = set_get(m->rules, &rule); | |
182 | if (existing) { | |
183 | if (ret) | |
184 | *ret = existing; | |
185 | return 1; | |
186 | } | |
187 | } | |
188 | ||
189 | if (m->rules_foreign) { | |
190 | existing = set_get(m->rules_foreign, &rule); | |
191 | if (existing) { | |
192 | if (ret) | |
193 | *ret = existing; | |
194 | return 1; | |
195 | } | |
196 | } | |
197 | ||
198 | return -ENOENT; | |
199 | } | |
200 | ||
201 | int routing_policy_rule_make_local(Manager *m, RoutingPolicyRule *rule) { | |
202 | int r; | |
203 | ||
204 | assert(m); | |
205 | ||
206 | if (set_contains(m->rules_foreign, rule)) { | |
207 | set_remove(m->rules_foreign, rule); | |
208 | ||
209 | r = set_ensure_allocated(&m->rules, &routing_policy_rule_hash_ops); | |
210 | if (r < 0) | |
211 | return r; | |
212 | ||
213 | return set_put(m->rules, rule); | |
214 | } | |
215 | ||
216 | return -ENOENT; | |
217 | } | |
218 | ||
36e6e28b SS |
219 | static int routing_policy_rule_add_internal(Manager *m, |
220 | Set **rules, | |
bce67bbe SS |
221 | int family, |
222 | const union in_addr_union *from, | |
223 | uint8_t from_prefixlen, | |
224 | const union in_addr_union *to, | |
225 | uint8_t to_prefixlen, | |
226 | uint8_t tos, | |
227 | uint32_t fwmark, | |
228 | uint32_t table, | |
762e2659 SS |
229 | char *iif, |
230 | char *oif, | |
bce67bbe SS |
231 | RoutingPolicyRule **ret) { |
232 | ||
8e766630 | 233 | _cleanup_(routing_policy_rule_freep) RoutingPolicyRule *rule = NULL; |
bce67bbe SS |
234 | int r; |
235 | ||
236 | assert_return(rules, -EINVAL); | |
237 | ||
238 | r = routing_policy_rule_new(&rule); | |
239 | if (r < 0) | |
240 | return r; | |
241 | ||
6964cf45 | 242 | rule->manager = m; |
bce67bbe SS |
243 | rule->family = family; |
244 | rule->from = *from; | |
245 | rule->from_prefixlen = from_prefixlen; | |
246 | rule->to = *to; | |
247 | rule->to_prefixlen = to_prefixlen; | |
248 | rule->tos = tos; | |
249 | rule->fwmark = fwmark; | |
250 | rule->table = table; | |
762e2659 SS |
251 | rule->iif = iif; |
252 | rule->oif = oif; | |
bce67bbe SS |
253 | |
254 | r = set_ensure_allocated(rules, &routing_policy_rule_hash_ops); | |
255 | if (r < 0) | |
256 | return r; | |
257 | ||
258 | r = set_put(*rules, rule); | |
259 | if (r < 0) | |
260 | return r; | |
261 | ||
262 | if (ret) | |
263 | *ret = rule; | |
264 | ||
265 | rule = NULL; | |
266 | ||
267 | return 0; | |
268 | } | |
269 | ||
270 | int routing_policy_rule_add(Manager *m, | |
271 | int family, | |
272 | const union in_addr_union *from, | |
273 | uint8_t from_prefixlen, | |
274 | const union in_addr_union *to, | |
275 | uint8_t to_prefixlen, | |
276 | uint8_t tos, | |
277 | uint32_t fwmark, | |
278 | uint32_t table, | |
762e2659 SS |
279 | char *iif, |
280 | char *oif, | |
bce67bbe SS |
281 | RoutingPolicyRule **ret) { |
282 | ||
36e6e28b | 283 | return routing_policy_rule_add_internal(m, &m->rules, family, from, from_prefixlen, to, to_prefixlen, tos, fwmark, table, iif, oif, ret); |
bce67bbe SS |
284 | } |
285 | ||
286 | int routing_policy_rule_add_foreign(Manager *m, | |
287 | int family, | |
288 | const union in_addr_union *from, | |
289 | uint8_t from_prefixlen, | |
290 | const union in_addr_union *to, | |
291 | uint8_t to_prefixlen, | |
292 | uint8_t tos, | |
293 | uint32_t fwmark, | |
294 | uint32_t table, | |
762e2659 SS |
295 | char *iif, |
296 | char *oif, | |
bce67bbe | 297 | RoutingPolicyRule **ret) { |
36e6e28b | 298 | return routing_policy_rule_add_internal(m, &m->rules_foreign, family, from, from_prefixlen, to, to_prefixlen, tos, fwmark, table, iif, oif, ret); |
bce67bbe SS |
299 | } |
300 | ||
301 | static int routing_policy_rule_remove_handler(sd_netlink *rtnl, sd_netlink_message *m, void *userdata) { | |
8e766630 | 302 | _cleanup_(link_unrefp) Link *link = userdata; |
bce67bbe SS |
303 | int r; |
304 | ||
305 | assert(m); | |
306 | assert(link); | |
307 | assert(link->ifname); | |
308 | ||
7715629e | 309 | link->routing_policy_rule_remove_messages--; |
bce67bbe SS |
310 | |
311 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) | |
312 | return 1; | |
313 | ||
314 | r = sd_netlink_message_get_errno(m); | |
315 | if (r < 0) | |
316 | log_link_warning_errno(link, r, "Could not drop routing policy rule: %m"); | |
317 | ||
318 | return 1; | |
319 | } | |
320 | ||
321 | int routing_policy_rule_remove(RoutingPolicyRule *routing_policy_rule, Link *link, sd_netlink_message_handler_t callback) { | |
322 | _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *m = NULL; | |
323 | int r; | |
324 | ||
325 | assert(routing_policy_rule); | |
326 | assert(link); | |
327 | assert(link->manager); | |
328 | assert(link->manager->rtnl); | |
329 | assert(link->ifindex > 0); | |
330 | assert(IN_SET(routing_policy_rule->family, AF_INET, AF_INET6)); | |
331 | ||
332 | r = sd_rtnl_message_new_routing_policy_rule(link->manager->rtnl, &m, RTM_DELRULE, routing_policy_rule->family); | |
333 | if (r < 0) | |
334 | return log_error_errno(r, "Could not allocate RTM_DELRULE message: %m"); | |
335 | ||
336 | if (!in_addr_is_null(routing_policy_rule->family, &routing_policy_rule->from)) { | |
337 | if (routing_policy_rule->family == AF_INET) | |
338 | r = sd_netlink_message_append_in_addr(m, FRA_SRC, &routing_policy_rule->from.in); | |
339 | else | |
340 | r = sd_netlink_message_append_in6_addr(m, FRA_SRC, &routing_policy_rule->from.in6); | |
341 | ||
342 | if (r < 0) | |
343 | return log_error_errno(r, "Could not append FRA_SRC attribute: %m"); | |
344 | ||
345 | r = sd_rtnl_message_routing_policy_rule_set_rtm_src_prefixlen(m, routing_policy_rule->from_prefixlen); | |
346 | if (r < 0) | |
347 | return log_error_errno(r, "Could not set source prefix length: %m"); | |
348 | } | |
349 | ||
350 | if (!in_addr_is_null(routing_policy_rule->family, &routing_policy_rule->to)) { | |
351 | if (routing_policy_rule->family == AF_INET) | |
352 | r = sd_netlink_message_append_in_addr(m, FRA_DST, &routing_policy_rule->to.in); | |
353 | else | |
354 | r = sd_netlink_message_append_in6_addr(m, FRA_DST, &routing_policy_rule->to.in6); | |
355 | ||
356 | if (r < 0) | |
357 | return log_error_errno(r, "Could not append FRA_DST attribute: %m"); | |
358 | ||
359 | r = sd_rtnl_message_routing_policy_rule_set_rtm_dst_prefixlen(m, routing_policy_rule->to_prefixlen); | |
360 | if (r < 0) | |
361 | return log_error_errno(r, "Could not set destination prefix length: %m"); | |
362 | } | |
363 | ||
364 | r = sd_netlink_call_async(link->manager->rtnl, m, callback, link, 0, NULL); | |
365 | if (r < 0) | |
366 | return log_error_errno(r, "Could not send rtnetlink message: %m"); | |
367 | ||
368 | link_ref(link); | |
369 | ||
370 | return 0; | |
371 | } | |
372 | ||
373 | static int routing_policy_rule_new_static(Network *network, const char *filename, unsigned section_line, RoutingPolicyRule **ret) { | |
8e766630 LP |
374 | _cleanup_(routing_policy_rule_freep) RoutingPolicyRule *rule = NULL; |
375 | _cleanup_(network_config_section_freep) NetworkConfigSection *n = NULL; | |
bce67bbe SS |
376 | int r; |
377 | ||
378 | assert(network); | |
379 | assert(ret); | |
380 | assert(!!filename == (section_line > 0)); | |
381 | ||
382 | r = network_config_section_new(filename, section_line, &n); | |
383 | if (r < 0) | |
384 | return r; | |
385 | ||
386 | rule = hashmap_get(network->rules_by_section, n); | |
387 | if (rule) { | |
1cc6c93a | 388 | *ret = TAKE_PTR(rule); |
bce67bbe SS |
389 | |
390 | return 0; | |
391 | } | |
392 | ||
393 | r = routing_policy_rule_new(&rule); | |
394 | if (r < 0) | |
395 | return r; | |
396 | ||
8e37fcbd | 397 | rule->section = TAKE_PTR(n); |
bce67bbe | 398 | rule->network = network; |
bce67bbe SS |
399 | |
400 | r = hashmap_put(network->rules_by_section, rule->section, rule); | |
401 | if (r < 0) | |
402 | return r; | |
403 | ||
404 | LIST_APPEND(rules, network->rules, rule); | |
405 | network->n_rules++; | |
406 | ||
1cc6c93a | 407 | *ret = TAKE_PTR(rule); |
bce67bbe SS |
408 | |
409 | return 0; | |
410 | } | |
411 | ||
412 | int link_routing_policy_rule_handler(sd_netlink *rtnl, sd_netlink_message *m, void *userdata) { | |
8e766630 | 413 | _cleanup_(link_unrefp) Link *link = userdata; |
bce67bbe SS |
414 | int r; |
415 | ||
416 | assert(rtnl); | |
417 | assert(m); | |
418 | assert(link); | |
419 | assert(link->ifname); | |
7715629e | 420 | assert(link->routing_policy_rule_messages > 0); |
bce67bbe | 421 | |
7715629e | 422 | link->routing_policy_rule_messages--; |
bce67bbe SS |
423 | |
424 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) | |
425 | return 1; | |
426 | ||
427 | r = sd_netlink_message_get_errno(m); | |
428 | if (r < 0 && r != -EEXIST) | |
429 | log_link_warning_errno(link, r, "Could not add routing policy rule: %m"); | |
430 | ||
7715629e | 431 | if (link->routing_policy_rule_messages == 0) { |
bce67bbe | 432 | log_link_debug(link, "Routing policy rule configured"); |
7715629e ST |
433 | link->routing_policy_rules_configured = true; |
434 | link_check_ready(link); | |
435 | } | |
bce67bbe SS |
436 | |
437 | return 1; | |
438 | } | |
439 | ||
440 | int routing_policy_rule_configure(RoutingPolicyRule *rule, Link *link, sd_netlink_message_handler_t callback, bool update) { | |
441 | _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *m = NULL; | |
442 | int r; | |
443 | ||
444 | assert(rule); | |
445 | assert(link); | |
446 | assert(link->ifindex > 0); | |
447 | assert(link->manager); | |
448 | assert(link->manager->rtnl); | |
449 | ||
450 | r = sd_rtnl_message_new_routing_policy_rule(link->manager->rtnl, &m, RTM_NEWRULE, rule->family); | |
451 | if (r < 0) | |
452 | return log_error_errno(r, "Could not allocate RTM_NEWRULE message: %m"); | |
453 | ||
454 | if (!in_addr_is_null(rule->family, &rule->from)) { | |
455 | if (rule->family == AF_INET) | |
456 | r = sd_netlink_message_append_in_addr(m, FRA_SRC, &rule->from.in); | |
457 | else | |
458 | r = sd_netlink_message_append_in6_addr(m, FRA_SRC, &rule->from.in6); | |
459 | ||
460 | if (r < 0) | |
461 | return log_error_errno(r, "Could not append FRA_SRC attribute: %m"); | |
462 | ||
463 | r = sd_rtnl_message_routing_policy_rule_set_rtm_src_prefixlen(m, rule->from_prefixlen); | |
464 | if (r < 0) | |
465 | return log_error_errno(r, "Could not set source prefix length: %m"); | |
466 | } | |
467 | ||
468 | if (!in_addr_is_null(rule->family, &rule->to)) { | |
469 | if (rule->family == AF_INET) | |
470 | r = sd_netlink_message_append_in_addr(m, FRA_DST, &rule->to.in); | |
471 | else | |
472 | r = sd_netlink_message_append_in6_addr(m, FRA_DST, &rule->to.in6); | |
473 | ||
474 | if (r < 0) | |
475 | return log_error_errno(r, "Could not append FRA_DST attribute: %m"); | |
476 | ||
477 | r = sd_rtnl_message_routing_policy_rule_set_rtm_dst_prefixlen(m, rule->to_prefixlen); | |
478 | if (r < 0) | |
479 | return log_error_errno(r, "Could not set destination prefix length: %m"); | |
480 | } | |
481 | ||
482 | r = sd_netlink_message_append_u32(m, FRA_PRIORITY, rule->priority); | |
483 | if (r < 0) | |
484 | return log_error_errno(r, "Could not append FRA_PRIORITY attribute: %m"); | |
485 | ||
486 | if (rule->tos > 0) { | |
487 | r = sd_rtnl_message_routing_policy_rule_set_tos(m, rule->tos); | |
488 | if (r < 0) | |
489 | return log_error_errno(r, "Could not set ip rule tos: %m"); | |
490 | } | |
491 | ||
492 | if (rule->table < 256) { | |
493 | r = sd_rtnl_message_routing_policy_rule_set_table(m, rule->table); | |
494 | if (r < 0) | |
495 | return log_error_errno(r, "Could not set ip rule table: %m"); | |
496 | } else { | |
497 | r = sd_rtnl_message_routing_policy_rule_set_table(m, RT_TABLE_UNSPEC); | |
498 | if (r < 0) | |
499 | return log_error_errno(r, "Could not set ip rule table: %m"); | |
500 | ||
501 | r = sd_netlink_message_append_u32(m, FRA_TABLE, rule->table); | |
502 | if (r < 0) | |
503 | return log_error_errno(r, "Could not append FRA_TABLE attribute: %m"); | |
504 | } | |
505 | ||
506 | if (rule->fwmark > 0) { | |
507 | r = sd_netlink_message_append_u32(m, FRA_FWMARK, rule->fwmark); | |
508 | if (r < 0) | |
509 | return log_error_errno(r, "Could not append FRA_FWMARK attribute: %m"); | |
510 | } | |
511 | ||
512 | if (rule->fwmask > 0) { | |
513 | r = sd_netlink_message_append_u32(m, FRA_FWMASK, rule->fwmask); | |
514 | if (r < 0) | |
515 | return log_error_errno(r, "Could not append FRA_FWMASK attribute: %m"); | |
516 | } | |
517 | ||
762e2659 SS |
518 | if (rule->iif) { |
519 | r = sd_netlink_message_append_string(m, FRA_IFNAME, rule->iif); | |
520 | if (r < 0) | |
521 | return log_error_errno(r, "Could not append FRA_IFNAME attribute: %m"); | |
522 | } | |
523 | ||
524 | if (rule->oif) { | |
525 | r = sd_netlink_message_append_string(m, FRA_OIFNAME, rule->oif); | |
526 | if (r < 0) | |
527 | return log_error_errno(r, "Could not append FRA_OIFNAME attribute: %m"); | |
528 | } | |
529 | ||
bce67bbe SS |
530 | rule->link = link; |
531 | ||
532 | r = sd_netlink_call_async(link->manager->rtnl, m, callback, link, 0, NULL); | |
533 | if (r < 0) | |
534 | return log_error_errno(r, "Could not send rtnetlink message: %m"); | |
535 | ||
536 | link_ref(link); | |
537 | ||
538 | r = routing_policy_rule_add(link->manager, rule->family, &rule->from, rule->from_prefixlen, &rule->to, | |
762e2659 | 539 | rule->to_prefixlen, rule->tos, rule->fwmark, rule->table, rule->iif, rule->oif, NULL); |
bce67bbe SS |
540 | if (r < 0) |
541 | return log_error_errno(r, "Could not add rule : %m"); | |
542 | ||
543 | return 0; | |
544 | } | |
545 | ||
546 | static int parse_fwmark_fwmask(const char *s, uint32_t *fwmark, uint32_t *fwmask) { | |
547 | _cleanup_free_ char *f = NULL; | |
548 | char *p; | |
549 | int r; | |
550 | ||
551 | assert(s); | |
552 | ||
553 | f = strdup(s); | |
554 | if (!f) | |
555 | return -ENOMEM; | |
556 | ||
557 | p = strchr(f, '/'); | |
558 | if (p) | |
559 | *p++ = '\0'; | |
560 | ||
561 | r = safe_atou32(f, fwmark); | |
562 | if (r < 0) | |
563 | return log_error_errno(r, "Failed to parse RPDB rule firewall mark, ignoring: %s", f); | |
564 | ||
565 | if (p) { | |
566 | r = safe_atou32(p, fwmask); | |
567 | if (r < 0) | |
568 | return log_error_errno(r, "Failed to parse RPDB rule mask, ignoring: %s", f); | |
569 | } | |
570 | ||
571 | return 0; | |
572 | } | |
573 | ||
574 | int config_parse_routing_policy_rule_tos( | |
575 | const char *unit, | |
576 | const char *filename, | |
577 | unsigned line, | |
578 | const char *section, | |
579 | unsigned section_line, | |
580 | const char *lvalue, | |
581 | int ltype, | |
582 | const char *rvalue, | |
583 | void *data, | |
584 | void *userdata) { | |
585 | ||
8e766630 | 586 | _cleanup_(routing_policy_rule_freep) RoutingPolicyRule *n = NULL; |
bce67bbe SS |
587 | Network *network = userdata; |
588 | int r; | |
589 | ||
590 | assert(filename); | |
591 | assert(section); | |
592 | assert(lvalue); | |
593 | assert(rvalue); | |
594 | assert(data); | |
595 | ||
596 | r = routing_policy_rule_new_static(network, filename, section_line, &n); | |
597 | if (r < 0) | |
598 | return r; | |
599 | ||
600 | r = safe_atou8(rvalue, &n->tos); | |
601 | if (r < 0) { | |
602 | log_syntax(unit, LOG_ERR, filename, line, r, "Failed to parse RPDB rule tos, ignoring: %s", rvalue); | |
603 | return 0; | |
604 | } | |
605 | ||
606 | n = NULL; | |
607 | ||
608 | return 0; | |
609 | } | |
610 | ||
611 | int config_parse_routing_policy_rule_priority( | |
612 | const char *unit, | |
613 | const char *filename, | |
614 | unsigned line, | |
615 | const char *section, | |
616 | unsigned section_line, | |
617 | const char *lvalue, | |
618 | int ltype, | |
619 | const char *rvalue, | |
620 | void *data, | |
621 | void *userdata) { | |
622 | ||
8e766630 | 623 | _cleanup_(routing_policy_rule_freep) RoutingPolicyRule *n = NULL; |
bce67bbe SS |
624 | Network *network = userdata; |
625 | int r; | |
626 | ||
627 | assert(filename); | |
628 | assert(section); | |
629 | assert(lvalue); | |
630 | assert(rvalue); | |
631 | assert(data); | |
632 | ||
633 | r = routing_policy_rule_new_static(network, filename, section_line, &n); | |
634 | if (r < 0) | |
635 | return r; | |
636 | ||
637 | r = safe_atou32(rvalue, &n->priority); | |
638 | if (r < 0) { | |
639 | log_syntax(unit, LOG_ERR, filename, line, r, "Failed to parse RPDB rule priority, ignoring: %s", rvalue); | |
640 | return 0; | |
641 | } | |
642 | ||
643 | n = NULL; | |
644 | ||
645 | return 0; | |
646 | } | |
647 | ||
648 | int config_parse_routing_policy_rule_table( | |
649 | const char *unit, | |
650 | const char *filename, | |
651 | unsigned line, | |
652 | const char *section, | |
653 | unsigned section_line, | |
654 | const char *lvalue, | |
655 | int ltype, | |
656 | const char *rvalue, | |
657 | void *data, | |
658 | void *userdata) { | |
659 | ||
8e766630 | 660 | _cleanup_(routing_policy_rule_freep) RoutingPolicyRule *n = NULL; |
bce67bbe SS |
661 | Network *network = userdata; |
662 | int r; | |
663 | ||
664 | assert(filename); | |
665 | assert(section); | |
666 | assert(lvalue); | |
667 | assert(rvalue); | |
668 | assert(data); | |
669 | ||
670 | r = routing_policy_rule_new_static(network, filename, section_line, &n); | |
671 | if (r < 0) | |
672 | return r; | |
673 | ||
674 | r = safe_atou32(rvalue, &n->table); | |
675 | if (r < 0) { | |
676 | log_syntax(unit, LOG_ERR, filename, line, r, "Failed to parse RPDB rule table, ignoring: %s", rvalue); | |
677 | return 0; | |
678 | } | |
679 | ||
680 | n = NULL; | |
681 | ||
682 | return 0; | |
683 | } | |
684 | ||
685 | int config_parse_routing_policy_rule_fwmark_mask( | |
686 | const char *unit, | |
687 | const char *filename, | |
688 | unsigned line, | |
689 | const char *section, | |
690 | unsigned section_line, | |
691 | const char *lvalue, | |
692 | int ltype, | |
693 | const char *rvalue, | |
694 | void *data, | |
695 | void *userdata) { | |
696 | ||
8e766630 | 697 | _cleanup_(routing_policy_rule_freep) RoutingPolicyRule *n = NULL; |
bce67bbe SS |
698 | Network *network = userdata; |
699 | int r; | |
700 | ||
701 | assert(filename); | |
702 | assert(section); | |
703 | assert(lvalue); | |
704 | assert(rvalue); | |
705 | assert(data); | |
706 | ||
707 | r = routing_policy_rule_new_static(network, filename, section_line, &n); | |
708 | if (r < 0) | |
709 | return r; | |
710 | ||
711 | r = parse_fwmark_fwmask(rvalue, &n->fwmark, &n->fwmask); | |
712 | if (r < 0) { | |
713 | log_syntax(unit, LOG_ERR, filename, line, r, "Failed to parse RPDB rule firewall mark or mask, ignoring: %s", rvalue); | |
714 | return 0; | |
715 | } | |
716 | ||
717 | n = NULL; | |
718 | ||
719 | return 0; | |
720 | } | |
721 | ||
722 | int config_parse_routing_policy_rule_prefix( | |
723 | const char *unit, | |
724 | const char *filename, | |
725 | unsigned line, | |
726 | const char *section, | |
727 | unsigned section_line, | |
728 | const char *lvalue, | |
729 | int ltype, | |
730 | const char *rvalue, | |
731 | void *data, | |
732 | void *userdata) { | |
733 | ||
8e766630 | 734 | _cleanup_(routing_policy_rule_freep) RoutingPolicyRule *n = NULL; |
bce67bbe SS |
735 | Network *network = userdata; |
736 | union in_addr_union buffer; | |
737 | uint8_t prefixlen; | |
738 | int r; | |
739 | ||
740 | assert(filename); | |
741 | assert(section); | |
742 | assert(lvalue); | |
743 | assert(rvalue); | |
744 | assert(data); | |
745 | ||
746 | r = routing_policy_rule_new_static(network, filename, section_line, &n); | |
747 | if (r < 0) | |
748 | return r; | |
749 | ||
750 | r = in_addr_prefix_from_string(rvalue, AF_INET, &buffer, &prefixlen); | |
751 | if (r < 0) { | |
752 | r = in_addr_prefix_from_string(rvalue, AF_INET6, &buffer, &prefixlen); | |
753 | if (r < 0) { | |
754 | log_syntax(unit, LOG_ERR, filename, line, r, "RPDB rule prefix is invalid, ignoring assignment: %s", rvalue); | |
755 | return 0; | |
756 | } | |
757 | ||
758 | n->family = AF_INET6; | |
759 | } else | |
760 | n->family = AF_INET; | |
761 | ||
762 | if (streq(lvalue, "To")) { | |
763 | n->to = buffer; | |
764 | n->to_prefixlen = prefixlen; | |
765 | } else { | |
766 | n->from = buffer; | |
767 | n->from_prefixlen = prefixlen; | |
768 | } | |
769 | ||
770 | n = NULL; | |
771 | ||
772 | return 0; | |
773 | } | |
774 | ||
762e2659 SS |
775 | int config_parse_routing_policy_rule_device( |
776 | const char *unit, | |
777 | const char *filename, | |
778 | unsigned line, | |
779 | const char *section, | |
780 | unsigned section_line, | |
781 | const char *lvalue, | |
782 | int ltype, | |
783 | const char *rvalue, | |
784 | void *data, | |
785 | void *userdata) { | |
786 | ||
8e766630 | 787 | _cleanup_(routing_policy_rule_freep) RoutingPolicyRule *n = NULL; |
762e2659 SS |
788 | Network *network = userdata; |
789 | int r; | |
790 | ||
791 | assert(filename); | |
792 | assert(section); | |
793 | assert(lvalue); | |
794 | assert(rvalue); | |
795 | assert(data); | |
796 | ||
797 | r = routing_policy_rule_new_static(network, filename, section_line, &n); | |
798 | if (r < 0) | |
799 | return r; | |
800 | ||
801 | if (!ifname_valid(rvalue)) { | |
802 | log_syntax(unit, LOG_ERR, filename, line, r, "Failed to parse '%s' interface name, ignoring: %s", lvalue, rvalue); | |
803 | return 0; | |
804 | } | |
805 | ||
806 | if (streq(lvalue, "IncomingInterface")) { | |
807 | r = free_and_strdup(&n->iif, rvalue); | |
808 | if (r < 0) | |
809 | return log_oom(); | |
810 | } else { | |
811 | r = free_and_strdup(&n->oif, rvalue); | |
812 | if (r < 0) | |
813 | return log_oom(); | |
814 | } | |
815 | ||
816 | n = NULL; | |
817 | ||
818 | return 0; | |
819 | } | |
820 | ||
458d8ae3 | 821 | static int routing_policy_rule_read_full_file(const char *state_file, char **ret) { |
ac097c84 | 822 | _cleanup_free_ char *s = NULL; |
bce67bbe SS |
823 | size_t size; |
824 | int r; | |
825 | ||
826 | assert(state_file); | |
827 | ||
828 | r = read_full_file(state_file, &s, &size); | |
829 | if (r == -ENOENT) | |
830 | return -ENODATA; | |
831 | if (r < 0) | |
832 | return r; | |
833 | if (size <= 0) | |
834 | return -ENODATA; | |
835 | ||
ae2a15bc | 836 | *ret = TAKE_PTR(s); |
bce67bbe SS |
837 | |
838 | return size; | |
839 | } | |
840 | ||
458d8ae3 ZJS |
841 | int routing_policy_serialize_rules(Set *rules, FILE *f) { |
842 | RoutingPolicyRule *rule = NULL; | |
843 | Iterator i; | |
844 | int r; | |
845 | ||
846 | assert(f); | |
847 | ||
848 | SET_FOREACH(rule, rules, i) { | |
849 | _cleanup_free_ char *from_str = NULL, *to_str = NULL; | |
850 | bool space = false; | |
851 | ||
852 | fputs("RULE=", f); | |
853 | ||
854 | if (!in_addr_is_null(rule->family, &rule->from)) { | |
855 | r = in_addr_to_string(rule->family, &rule->from, &from_str); | |
856 | if (r < 0) | |
857 | return r; | |
858 | ||
859 | fprintf(f, "from=%s/%hhu", | |
860 | from_str, rule->from_prefixlen); | |
861 | space = true; | |
862 | } | |
863 | ||
864 | if (!in_addr_is_null(rule->family, &rule->to)) { | |
865 | r = in_addr_to_string(rule->family, &rule->to, &to_str); | |
866 | if (r < 0) | |
867 | return r; | |
868 | ||
869 | fprintf(f, "%sto=%s/%hhu", | |
870 | space ? " " : "", | |
871 | to_str, rule->to_prefixlen); | |
872 | space = true; | |
873 | } | |
874 | ||
875 | if (rule->tos != 0) { | |
876 | fprintf(f, "%stos=%hhu", | |
877 | space ? " " : "", | |
878 | rule->tos); | |
879 | space = true; | |
880 | } | |
881 | ||
882 | if (rule->fwmark != 0) { | |
883 | fprintf(f, "%sfwmark=%"PRIu32"/%"PRIu32, | |
884 | space ? " " : "", | |
885 | rule->fwmark, rule->fwmask); | |
886 | space = true; | |
887 | } | |
888 | ||
9491f55f ZJS |
889 | if (rule->iif) { |
890 | fprintf(f, "%siif=%s", | |
891 | space ? " " : "", | |
892 | rule->iif); | |
893 | space = true; | |
894 | } | |
895 | ||
896 | if (rule->oif) { | |
897 | fprintf(f, "%soif=%s", | |
898 | space ? " " : "", | |
899 | rule->oif); | |
900 | space = true; | |
901 | } | |
902 | ||
458d8ae3 ZJS |
903 | fprintf(f, "%stable=%"PRIu32 "\n", |
904 | space ? " " : "", | |
905 | rule->table); | |
906 | } | |
907 | ||
908 | return 0; | |
909 | } | |
910 | ||
911 | int routing_policy_load_rules(const char *state_file, Set **rules) { | |
bce67bbe SS |
912 | _cleanup_strv_free_ char **l = NULL; |
913 | _cleanup_free_ char *data = NULL; | |
914 | const char *p; | |
915 | char **i; | |
916 | int r; | |
917 | ||
458d8ae3 ZJS |
918 | assert(state_file); |
919 | assert(rules); | |
bce67bbe | 920 | |
458d8ae3 | 921 | r = routing_policy_rule_read_full_file(state_file, &data); |
bce67bbe SS |
922 | if (r <= 0) |
923 | return r; | |
924 | ||
925 | l = strv_split_newlines(data); | |
926 | if (!l) | |
927 | return -ENOMEM; | |
928 | ||
458d8ae3 | 929 | r = set_ensure_allocated(rules, &routing_policy_rule_hash_ops); |
bce67bbe SS |
930 | if (r < 0) |
931 | return r; | |
932 | ||
933 | STRV_FOREACH(i, l) { | |
8e766630 | 934 | _cleanup_(routing_policy_rule_freep) RoutingPolicyRule *rule = NULL; |
bce67bbe SS |
935 | |
936 | p = startswith(*i, "RULE="); | |
937 | if (!p) | |
938 | continue; | |
939 | ||
bce67bbe SS |
940 | r = routing_policy_rule_new(&rule); |
941 | if (r < 0) | |
942 | return r; | |
943 | ||
944 | for (;;) { | |
945 | _cleanup_free_ char *word = NULL, *a = NULL, *b = NULL; | |
946 | union in_addr_union buffer; | |
947 | uint8_t prefixlen; | |
948 | ||
949 | r = extract_first_word(&p, &word, NULL, 0); | |
950 | if (r < 0) | |
951 | return r; | |
952 | if (r == 0) | |
953 | break; | |
954 | ||
955 | r = split_pair(word, "=", &a, &b); | |
956 | if (r < 0) | |
957 | continue; | |
958 | ||
959 | if (STR_IN_SET(a, "from", "to")) { | |
960 | ||
961 | r = in_addr_prefix_from_string(b, AF_INET, &buffer, &prefixlen); | |
962 | if (r < 0) { | |
963 | r = in_addr_prefix_from_string(b, AF_INET6, &buffer, &prefixlen); | |
964 | if (r < 0) { | |
965 | log_error_errno(r, "RPDB rule prefix is invalid, ignoring assignment: %s", b); | |
966 | continue; | |
967 | } | |
968 | ||
969 | rule->family = AF_INET6; | |
970 | } else | |
971 | rule->family = AF_INET; | |
972 | ||
973 | if (streq(a, "to")) { | |
974 | rule->to = buffer; | |
975 | rule->to_prefixlen = prefixlen; | |
976 | } else { | |
977 | rule->from = buffer; | |
978 | rule->from_prefixlen = prefixlen; | |
979 | } | |
980 | } else if (streq(a, "tos")) { | |
981 | r = safe_atou8(b, &rule->tos); | |
982 | if (r < 0) { | |
983 | log_error_errno(r, "Failed to parse RPDB rule tos, ignoring: %s", b); | |
984 | continue; | |
985 | } | |
986 | } else if (streq(a, "table")) { | |
987 | r = safe_atou32(b, &rule->table); | |
988 | if (r < 0) { | |
989 | log_error_errno(r, "Failed to parse RPDB rule table, ignoring: %s", b); | |
990 | continue; | |
991 | } | |
992 | } else if (streq(a, "fwmark")) { | |
993 | ||
e4aca57d | 994 | r = parse_fwmark_fwmask(b, &rule->fwmark, &rule->fwmask); |
bce67bbe SS |
995 | if (r < 0) { |
996 | log_error_errno(r, "Failed to parse RPDB rule firewall mark or mask, ignoring: %s", a); | |
997 | continue; | |
998 | } | |
9491f55f | 999 | } else if (streq(a, "iif")) { |
762e2659 | 1000 | |
93f9da6e | 1001 | if (free_and_strdup(&rule->iif, b) < 0) |
762e2659 | 1002 | return log_oom(); |
93f9da6e | 1003 | |
9491f55f | 1004 | } else if (streq(a, "oif")) { |
762e2659 | 1005 | |
93f9da6e | 1006 | if (free_and_strdup(&rule->oif, b) < 0) |
762e2659 | 1007 | return log_oom(); |
bce67bbe SS |
1008 | } |
1009 | } | |
1010 | ||
458d8ae3 | 1011 | r = set_put(*rules, rule); |
bce67bbe SS |
1012 | if (r < 0) { |
1013 | log_warning_errno(r, "Failed to add RPDB rule to saved DB, ignoring: %s", p); | |
1014 | continue; | |
1015 | } | |
1016 | ||
1017 | rule = NULL; | |
1018 | } | |
1019 | ||
1020 | return 0; | |
1021 | } | |
1022 | ||
1023 | void routing_policy_rule_purge(Manager *m, Link *link) { | |
1024 | RoutingPolicyRule *rule, *existing; | |
1025 | Iterator i; | |
1026 | int r; | |
1027 | ||
1028 | assert(m); | |
1029 | assert(link); | |
1030 | ||
1031 | SET_FOREACH(rule, m->rules_saved, i) { | |
1032 | existing = set_get(m->rules_foreign, rule); | |
1033 | if (existing) { | |
1034 | ||
1035 | r = routing_policy_rule_remove(rule, link, routing_policy_rule_remove_handler); | |
1036 | if (r < 0) { | |
1037 | log_warning_errno(r, "Could not remove routing policy rules: %m"); | |
1038 | continue; | |
1039 | } | |
1040 | ||
7715629e | 1041 | link->routing_policy_rule_remove_messages++; |
bce67bbe SS |
1042 | } |
1043 | } | |
1044 | } |