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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, | |
eeab051b YW |
159 | const char *iif, |
160 | const 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, | |
eeab051b YW |
176 | .iif = (char*) iif, |
177 | .oif = (char*) 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, | |
eeab051b YW |
229 | const char *_iif, |
230 | const char *_oif, | |
bce67bbe SS |
231 | RoutingPolicyRule **ret) { |
232 | ||
8e766630 | 233 | _cleanup_(routing_policy_rule_freep) RoutingPolicyRule *rule = NULL; |
eeab051b | 234 | _cleanup_free_ char *iif = NULL, *oif = NULL; |
bce67bbe SS |
235 | int r; |
236 | ||
237 | assert_return(rules, -EINVAL); | |
238 | ||
eeab051b YW |
239 | if (_iif) { |
240 | iif = strdup(_iif); | |
241 | if (!iif) | |
242 | return -ENOMEM; | |
243 | } | |
244 | ||
245 | if (_oif) { | |
246 | oif = strdup(_oif); | |
247 | if (!oif) | |
248 | return -ENOMEM; | |
249 | } | |
250 | ||
bce67bbe SS |
251 | r = routing_policy_rule_new(&rule); |
252 | if (r < 0) | |
253 | return r; | |
254 | ||
6964cf45 | 255 | rule->manager = m; |
bce67bbe SS |
256 | rule->family = family; |
257 | rule->from = *from; | |
258 | rule->from_prefixlen = from_prefixlen; | |
259 | rule->to = *to; | |
260 | rule->to_prefixlen = to_prefixlen; | |
261 | rule->tos = tos; | |
262 | rule->fwmark = fwmark; | |
263 | rule->table = table; | |
eeab051b YW |
264 | rule->iif = TAKE_PTR(iif); |
265 | rule->oif = TAKE_PTR(oif); | |
bce67bbe SS |
266 | |
267 | r = set_ensure_allocated(rules, &routing_policy_rule_hash_ops); | |
268 | if (r < 0) | |
269 | return r; | |
270 | ||
271 | r = set_put(*rules, rule); | |
272 | if (r < 0) | |
273 | return r; | |
274 | ||
275 | if (ret) | |
276 | *ret = rule; | |
277 | ||
278 | rule = NULL; | |
279 | ||
280 | return 0; | |
281 | } | |
282 | ||
283 | int routing_policy_rule_add(Manager *m, | |
284 | int family, | |
285 | const union in_addr_union *from, | |
286 | uint8_t from_prefixlen, | |
287 | const union in_addr_union *to, | |
288 | uint8_t to_prefixlen, | |
289 | uint8_t tos, | |
290 | uint32_t fwmark, | |
291 | uint32_t table, | |
eeab051b YW |
292 | const char *iif, |
293 | const char *oif, | |
bce67bbe SS |
294 | RoutingPolicyRule **ret) { |
295 | ||
36e6e28b | 296 | return routing_policy_rule_add_internal(m, &m->rules, family, from, from_prefixlen, to, to_prefixlen, tos, fwmark, table, iif, oif, ret); |
bce67bbe SS |
297 | } |
298 | ||
299 | int routing_policy_rule_add_foreign(Manager *m, | |
300 | int family, | |
301 | const union in_addr_union *from, | |
302 | uint8_t from_prefixlen, | |
303 | const union in_addr_union *to, | |
304 | uint8_t to_prefixlen, | |
305 | uint8_t tos, | |
306 | uint32_t fwmark, | |
307 | uint32_t table, | |
eeab051b YW |
308 | const char *iif, |
309 | const char *oif, | |
bce67bbe | 310 | RoutingPolicyRule **ret) { |
36e6e28b | 311 | 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 |
312 | } |
313 | ||
314 | static int routing_policy_rule_remove_handler(sd_netlink *rtnl, sd_netlink_message *m, void *userdata) { | |
8e766630 | 315 | _cleanup_(link_unrefp) Link *link = userdata; |
bce67bbe SS |
316 | int r; |
317 | ||
318 | assert(m); | |
319 | assert(link); | |
320 | assert(link->ifname); | |
321 | ||
7715629e | 322 | link->routing_policy_rule_remove_messages--; |
bce67bbe SS |
323 | |
324 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) | |
325 | return 1; | |
326 | ||
327 | r = sd_netlink_message_get_errno(m); | |
328 | if (r < 0) | |
329 | log_link_warning_errno(link, r, "Could not drop routing policy rule: %m"); | |
330 | ||
331 | return 1; | |
332 | } | |
333 | ||
334 | int routing_policy_rule_remove(RoutingPolicyRule *routing_policy_rule, Link *link, sd_netlink_message_handler_t callback) { | |
335 | _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *m = NULL; | |
336 | int r; | |
337 | ||
338 | assert(routing_policy_rule); | |
339 | assert(link); | |
340 | assert(link->manager); | |
341 | assert(link->manager->rtnl); | |
342 | assert(link->ifindex > 0); | |
343 | assert(IN_SET(routing_policy_rule->family, AF_INET, AF_INET6)); | |
344 | ||
345 | r = sd_rtnl_message_new_routing_policy_rule(link->manager->rtnl, &m, RTM_DELRULE, routing_policy_rule->family); | |
346 | if (r < 0) | |
347 | return log_error_errno(r, "Could not allocate RTM_DELRULE message: %m"); | |
348 | ||
349 | if (!in_addr_is_null(routing_policy_rule->family, &routing_policy_rule->from)) { | |
350 | if (routing_policy_rule->family == AF_INET) | |
351 | r = sd_netlink_message_append_in_addr(m, FRA_SRC, &routing_policy_rule->from.in); | |
352 | else | |
353 | r = sd_netlink_message_append_in6_addr(m, FRA_SRC, &routing_policy_rule->from.in6); | |
354 | ||
355 | if (r < 0) | |
356 | return log_error_errno(r, "Could not append FRA_SRC attribute: %m"); | |
357 | ||
358 | r = sd_rtnl_message_routing_policy_rule_set_rtm_src_prefixlen(m, routing_policy_rule->from_prefixlen); | |
359 | if (r < 0) | |
360 | return log_error_errno(r, "Could not set source prefix length: %m"); | |
361 | } | |
362 | ||
363 | if (!in_addr_is_null(routing_policy_rule->family, &routing_policy_rule->to)) { | |
364 | if (routing_policy_rule->family == AF_INET) | |
365 | r = sd_netlink_message_append_in_addr(m, FRA_DST, &routing_policy_rule->to.in); | |
366 | else | |
367 | r = sd_netlink_message_append_in6_addr(m, FRA_DST, &routing_policy_rule->to.in6); | |
368 | ||
369 | if (r < 0) | |
370 | return log_error_errno(r, "Could not append FRA_DST attribute: %m"); | |
371 | ||
372 | r = sd_rtnl_message_routing_policy_rule_set_rtm_dst_prefixlen(m, routing_policy_rule->to_prefixlen); | |
373 | if (r < 0) | |
374 | return log_error_errno(r, "Could not set destination prefix length: %m"); | |
375 | } | |
376 | ||
377 | r = sd_netlink_call_async(link->manager->rtnl, m, callback, link, 0, NULL); | |
378 | if (r < 0) | |
379 | return log_error_errno(r, "Could not send rtnetlink message: %m"); | |
380 | ||
381 | link_ref(link); | |
382 | ||
383 | return 0; | |
384 | } | |
385 | ||
386 | static int routing_policy_rule_new_static(Network *network, const char *filename, unsigned section_line, RoutingPolicyRule **ret) { | |
8e766630 LP |
387 | _cleanup_(routing_policy_rule_freep) RoutingPolicyRule *rule = NULL; |
388 | _cleanup_(network_config_section_freep) NetworkConfigSection *n = NULL; | |
bce67bbe SS |
389 | int r; |
390 | ||
391 | assert(network); | |
392 | assert(ret); | |
393 | assert(!!filename == (section_line > 0)); | |
394 | ||
395 | r = network_config_section_new(filename, section_line, &n); | |
396 | if (r < 0) | |
397 | return r; | |
398 | ||
399 | rule = hashmap_get(network->rules_by_section, n); | |
400 | if (rule) { | |
1cc6c93a | 401 | *ret = TAKE_PTR(rule); |
bce67bbe SS |
402 | |
403 | return 0; | |
404 | } | |
405 | ||
406 | r = routing_policy_rule_new(&rule); | |
407 | if (r < 0) | |
408 | return r; | |
409 | ||
8e37fcbd | 410 | rule->section = TAKE_PTR(n); |
bce67bbe | 411 | rule->network = network; |
bce67bbe SS |
412 | |
413 | r = hashmap_put(network->rules_by_section, rule->section, rule); | |
414 | if (r < 0) | |
415 | return r; | |
416 | ||
417 | LIST_APPEND(rules, network->rules, rule); | |
418 | network->n_rules++; | |
419 | ||
1cc6c93a | 420 | *ret = TAKE_PTR(rule); |
bce67bbe SS |
421 | |
422 | return 0; | |
423 | } | |
424 | ||
425 | int link_routing_policy_rule_handler(sd_netlink *rtnl, sd_netlink_message *m, void *userdata) { | |
8e766630 | 426 | _cleanup_(link_unrefp) Link *link = userdata; |
bce67bbe SS |
427 | int r; |
428 | ||
429 | assert(rtnl); | |
430 | assert(m); | |
431 | assert(link); | |
432 | assert(link->ifname); | |
7715629e | 433 | assert(link->routing_policy_rule_messages > 0); |
bce67bbe | 434 | |
7715629e | 435 | link->routing_policy_rule_messages--; |
bce67bbe SS |
436 | |
437 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) | |
438 | return 1; | |
439 | ||
440 | r = sd_netlink_message_get_errno(m); | |
441 | if (r < 0 && r != -EEXIST) | |
442 | log_link_warning_errno(link, r, "Could not add routing policy rule: %m"); | |
443 | ||
7715629e | 444 | if (link->routing_policy_rule_messages == 0) { |
bce67bbe | 445 | log_link_debug(link, "Routing policy rule configured"); |
7715629e ST |
446 | link->routing_policy_rules_configured = true; |
447 | link_check_ready(link); | |
448 | } | |
bce67bbe SS |
449 | |
450 | return 1; | |
451 | } | |
452 | ||
453 | int routing_policy_rule_configure(RoutingPolicyRule *rule, Link *link, sd_netlink_message_handler_t callback, bool update) { | |
454 | _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *m = NULL; | |
455 | int r; | |
456 | ||
457 | assert(rule); | |
458 | assert(link); | |
459 | assert(link->ifindex > 0); | |
460 | assert(link->manager); | |
461 | assert(link->manager->rtnl); | |
462 | ||
463 | r = sd_rtnl_message_new_routing_policy_rule(link->manager->rtnl, &m, RTM_NEWRULE, rule->family); | |
464 | if (r < 0) | |
465 | return log_error_errno(r, "Could not allocate RTM_NEWRULE message: %m"); | |
466 | ||
467 | if (!in_addr_is_null(rule->family, &rule->from)) { | |
468 | if (rule->family == AF_INET) | |
469 | r = sd_netlink_message_append_in_addr(m, FRA_SRC, &rule->from.in); | |
470 | else | |
471 | r = sd_netlink_message_append_in6_addr(m, FRA_SRC, &rule->from.in6); | |
472 | ||
473 | if (r < 0) | |
474 | return log_error_errno(r, "Could not append FRA_SRC attribute: %m"); | |
475 | ||
476 | r = sd_rtnl_message_routing_policy_rule_set_rtm_src_prefixlen(m, rule->from_prefixlen); | |
477 | if (r < 0) | |
478 | return log_error_errno(r, "Could not set source prefix length: %m"); | |
479 | } | |
480 | ||
481 | if (!in_addr_is_null(rule->family, &rule->to)) { | |
482 | if (rule->family == AF_INET) | |
483 | r = sd_netlink_message_append_in_addr(m, FRA_DST, &rule->to.in); | |
484 | else | |
485 | r = sd_netlink_message_append_in6_addr(m, FRA_DST, &rule->to.in6); | |
486 | ||
487 | if (r < 0) | |
488 | return log_error_errno(r, "Could not append FRA_DST attribute: %m"); | |
489 | ||
490 | r = sd_rtnl_message_routing_policy_rule_set_rtm_dst_prefixlen(m, rule->to_prefixlen); | |
491 | if (r < 0) | |
492 | return log_error_errno(r, "Could not set destination prefix length: %m"); | |
493 | } | |
494 | ||
495 | r = sd_netlink_message_append_u32(m, FRA_PRIORITY, rule->priority); | |
496 | if (r < 0) | |
497 | return log_error_errno(r, "Could not append FRA_PRIORITY attribute: %m"); | |
498 | ||
499 | if (rule->tos > 0) { | |
500 | r = sd_rtnl_message_routing_policy_rule_set_tos(m, rule->tos); | |
501 | if (r < 0) | |
502 | return log_error_errno(r, "Could not set ip rule tos: %m"); | |
503 | } | |
504 | ||
505 | if (rule->table < 256) { | |
506 | r = sd_rtnl_message_routing_policy_rule_set_table(m, rule->table); | |
507 | if (r < 0) | |
508 | return log_error_errno(r, "Could not set ip rule table: %m"); | |
509 | } else { | |
510 | r = sd_rtnl_message_routing_policy_rule_set_table(m, RT_TABLE_UNSPEC); | |
511 | if (r < 0) | |
512 | return log_error_errno(r, "Could not set ip rule table: %m"); | |
513 | ||
514 | r = sd_netlink_message_append_u32(m, FRA_TABLE, rule->table); | |
515 | if (r < 0) | |
516 | return log_error_errno(r, "Could not append FRA_TABLE attribute: %m"); | |
517 | } | |
518 | ||
519 | if (rule->fwmark > 0) { | |
520 | r = sd_netlink_message_append_u32(m, FRA_FWMARK, rule->fwmark); | |
521 | if (r < 0) | |
522 | return log_error_errno(r, "Could not append FRA_FWMARK attribute: %m"); | |
523 | } | |
524 | ||
525 | if (rule->fwmask > 0) { | |
526 | r = sd_netlink_message_append_u32(m, FRA_FWMASK, rule->fwmask); | |
527 | if (r < 0) | |
528 | return log_error_errno(r, "Could not append FRA_FWMASK attribute: %m"); | |
529 | } | |
530 | ||
762e2659 SS |
531 | if (rule->iif) { |
532 | r = sd_netlink_message_append_string(m, FRA_IFNAME, rule->iif); | |
533 | if (r < 0) | |
534 | return log_error_errno(r, "Could not append FRA_IFNAME attribute: %m"); | |
535 | } | |
536 | ||
537 | if (rule->oif) { | |
538 | r = sd_netlink_message_append_string(m, FRA_OIFNAME, rule->oif); | |
539 | if (r < 0) | |
540 | return log_error_errno(r, "Could not append FRA_OIFNAME attribute: %m"); | |
541 | } | |
542 | ||
bce67bbe SS |
543 | rule->link = link; |
544 | ||
545 | r = sd_netlink_call_async(link->manager->rtnl, m, callback, link, 0, NULL); | |
546 | if (r < 0) | |
547 | return log_error_errno(r, "Could not send rtnetlink message: %m"); | |
548 | ||
549 | link_ref(link); | |
550 | ||
551 | r = routing_policy_rule_add(link->manager, rule->family, &rule->from, rule->from_prefixlen, &rule->to, | |
762e2659 | 552 | rule->to_prefixlen, rule->tos, rule->fwmark, rule->table, rule->iif, rule->oif, NULL); |
bce67bbe SS |
553 | if (r < 0) |
554 | return log_error_errno(r, "Could not add rule : %m"); | |
555 | ||
556 | return 0; | |
557 | } | |
558 | ||
559 | static int parse_fwmark_fwmask(const char *s, uint32_t *fwmark, uint32_t *fwmask) { | |
560 | _cleanup_free_ char *f = NULL; | |
561 | char *p; | |
562 | int r; | |
563 | ||
564 | assert(s); | |
565 | ||
566 | f = strdup(s); | |
567 | if (!f) | |
568 | return -ENOMEM; | |
569 | ||
570 | p = strchr(f, '/'); | |
571 | if (p) | |
572 | *p++ = '\0'; | |
573 | ||
574 | r = safe_atou32(f, fwmark); | |
575 | if (r < 0) | |
576 | return log_error_errno(r, "Failed to parse RPDB rule firewall mark, ignoring: %s", f); | |
577 | ||
578 | if (p) { | |
579 | r = safe_atou32(p, fwmask); | |
580 | if (r < 0) | |
581 | return log_error_errno(r, "Failed to parse RPDB rule mask, ignoring: %s", f); | |
582 | } | |
583 | ||
584 | return 0; | |
585 | } | |
586 | ||
587 | int config_parse_routing_policy_rule_tos( | |
588 | const char *unit, | |
589 | const char *filename, | |
590 | unsigned line, | |
591 | const char *section, | |
592 | unsigned section_line, | |
593 | const char *lvalue, | |
594 | int ltype, | |
595 | const char *rvalue, | |
596 | void *data, | |
597 | void *userdata) { | |
598 | ||
8e766630 | 599 | _cleanup_(routing_policy_rule_freep) RoutingPolicyRule *n = NULL; |
bce67bbe SS |
600 | Network *network = userdata; |
601 | int r; | |
602 | ||
603 | assert(filename); | |
604 | assert(section); | |
605 | assert(lvalue); | |
606 | assert(rvalue); | |
607 | assert(data); | |
608 | ||
609 | r = routing_policy_rule_new_static(network, filename, section_line, &n); | |
610 | if (r < 0) | |
611 | return r; | |
612 | ||
613 | r = safe_atou8(rvalue, &n->tos); | |
614 | if (r < 0) { | |
615 | log_syntax(unit, LOG_ERR, filename, line, r, "Failed to parse RPDB rule tos, ignoring: %s", rvalue); | |
616 | return 0; | |
617 | } | |
618 | ||
619 | n = NULL; | |
620 | ||
621 | return 0; | |
622 | } | |
623 | ||
624 | int config_parse_routing_policy_rule_priority( | |
625 | const char *unit, | |
626 | const char *filename, | |
627 | unsigned line, | |
628 | const char *section, | |
629 | unsigned section_line, | |
630 | const char *lvalue, | |
631 | int ltype, | |
632 | const char *rvalue, | |
633 | void *data, | |
634 | void *userdata) { | |
635 | ||
8e766630 | 636 | _cleanup_(routing_policy_rule_freep) RoutingPolicyRule *n = NULL; |
bce67bbe SS |
637 | Network *network = userdata; |
638 | int r; | |
639 | ||
640 | assert(filename); | |
641 | assert(section); | |
642 | assert(lvalue); | |
643 | assert(rvalue); | |
644 | assert(data); | |
645 | ||
646 | r = routing_policy_rule_new_static(network, filename, section_line, &n); | |
647 | if (r < 0) | |
648 | return r; | |
649 | ||
650 | r = safe_atou32(rvalue, &n->priority); | |
651 | if (r < 0) { | |
652 | log_syntax(unit, LOG_ERR, filename, line, r, "Failed to parse RPDB rule priority, ignoring: %s", rvalue); | |
653 | return 0; | |
654 | } | |
655 | ||
656 | n = NULL; | |
657 | ||
658 | return 0; | |
659 | } | |
660 | ||
661 | int config_parse_routing_policy_rule_table( | |
662 | const char *unit, | |
663 | const char *filename, | |
664 | unsigned line, | |
665 | const char *section, | |
666 | unsigned section_line, | |
667 | const char *lvalue, | |
668 | int ltype, | |
669 | const char *rvalue, | |
670 | void *data, | |
671 | void *userdata) { | |
672 | ||
8e766630 | 673 | _cleanup_(routing_policy_rule_freep) RoutingPolicyRule *n = NULL; |
bce67bbe SS |
674 | Network *network = userdata; |
675 | int r; | |
676 | ||
677 | assert(filename); | |
678 | assert(section); | |
679 | assert(lvalue); | |
680 | assert(rvalue); | |
681 | assert(data); | |
682 | ||
683 | r = routing_policy_rule_new_static(network, filename, section_line, &n); | |
684 | if (r < 0) | |
685 | return r; | |
686 | ||
687 | r = safe_atou32(rvalue, &n->table); | |
688 | if (r < 0) { | |
689 | log_syntax(unit, LOG_ERR, filename, line, r, "Failed to parse RPDB rule table, ignoring: %s", rvalue); | |
690 | return 0; | |
691 | } | |
692 | ||
693 | n = NULL; | |
694 | ||
695 | return 0; | |
696 | } | |
697 | ||
698 | int config_parse_routing_policy_rule_fwmark_mask( | |
699 | const char *unit, | |
700 | const char *filename, | |
701 | unsigned line, | |
702 | const char *section, | |
703 | unsigned section_line, | |
704 | const char *lvalue, | |
705 | int ltype, | |
706 | const char *rvalue, | |
707 | void *data, | |
708 | void *userdata) { | |
709 | ||
8e766630 | 710 | _cleanup_(routing_policy_rule_freep) RoutingPolicyRule *n = NULL; |
bce67bbe SS |
711 | Network *network = userdata; |
712 | int r; | |
713 | ||
714 | assert(filename); | |
715 | assert(section); | |
716 | assert(lvalue); | |
717 | assert(rvalue); | |
718 | assert(data); | |
719 | ||
720 | r = routing_policy_rule_new_static(network, filename, section_line, &n); | |
721 | if (r < 0) | |
722 | return r; | |
723 | ||
724 | r = parse_fwmark_fwmask(rvalue, &n->fwmark, &n->fwmask); | |
725 | if (r < 0) { | |
726 | log_syntax(unit, LOG_ERR, filename, line, r, "Failed to parse RPDB rule firewall mark or mask, ignoring: %s", rvalue); | |
727 | return 0; | |
728 | } | |
729 | ||
730 | n = NULL; | |
731 | ||
732 | return 0; | |
733 | } | |
734 | ||
735 | int config_parse_routing_policy_rule_prefix( | |
736 | const char *unit, | |
737 | const char *filename, | |
738 | unsigned line, | |
739 | const char *section, | |
740 | unsigned section_line, | |
741 | const char *lvalue, | |
742 | int ltype, | |
743 | const char *rvalue, | |
744 | void *data, | |
745 | void *userdata) { | |
746 | ||
8e766630 | 747 | _cleanup_(routing_policy_rule_freep) RoutingPolicyRule *n = NULL; |
bce67bbe SS |
748 | Network *network = userdata; |
749 | union in_addr_union buffer; | |
750 | uint8_t prefixlen; | |
751 | int r; | |
752 | ||
753 | assert(filename); | |
754 | assert(section); | |
755 | assert(lvalue); | |
756 | assert(rvalue); | |
757 | assert(data); | |
758 | ||
759 | r = routing_policy_rule_new_static(network, filename, section_line, &n); | |
760 | if (r < 0) | |
761 | return r; | |
762 | ||
763 | r = in_addr_prefix_from_string(rvalue, AF_INET, &buffer, &prefixlen); | |
764 | if (r < 0) { | |
765 | r = in_addr_prefix_from_string(rvalue, AF_INET6, &buffer, &prefixlen); | |
766 | if (r < 0) { | |
767 | log_syntax(unit, LOG_ERR, filename, line, r, "RPDB rule prefix is invalid, ignoring assignment: %s", rvalue); | |
768 | return 0; | |
769 | } | |
770 | ||
771 | n->family = AF_INET6; | |
772 | } else | |
773 | n->family = AF_INET; | |
774 | ||
775 | if (streq(lvalue, "To")) { | |
776 | n->to = buffer; | |
777 | n->to_prefixlen = prefixlen; | |
778 | } else { | |
779 | n->from = buffer; | |
780 | n->from_prefixlen = prefixlen; | |
781 | } | |
782 | ||
783 | n = NULL; | |
784 | ||
785 | return 0; | |
786 | } | |
787 | ||
762e2659 SS |
788 | int config_parse_routing_policy_rule_device( |
789 | const char *unit, | |
790 | const char *filename, | |
791 | unsigned line, | |
792 | const char *section, | |
793 | unsigned section_line, | |
794 | const char *lvalue, | |
795 | int ltype, | |
796 | const char *rvalue, | |
797 | void *data, | |
798 | void *userdata) { | |
799 | ||
8e766630 | 800 | _cleanup_(routing_policy_rule_freep) RoutingPolicyRule *n = NULL; |
762e2659 SS |
801 | Network *network = userdata; |
802 | int r; | |
803 | ||
804 | assert(filename); | |
805 | assert(section); | |
806 | assert(lvalue); | |
807 | assert(rvalue); | |
808 | assert(data); | |
809 | ||
810 | r = routing_policy_rule_new_static(network, filename, section_line, &n); | |
811 | if (r < 0) | |
812 | return r; | |
813 | ||
814 | if (!ifname_valid(rvalue)) { | |
815 | log_syntax(unit, LOG_ERR, filename, line, r, "Failed to parse '%s' interface name, ignoring: %s", lvalue, rvalue); | |
816 | return 0; | |
817 | } | |
818 | ||
819 | if (streq(lvalue, "IncomingInterface")) { | |
820 | r = free_and_strdup(&n->iif, rvalue); | |
821 | if (r < 0) | |
822 | return log_oom(); | |
823 | } else { | |
824 | r = free_and_strdup(&n->oif, rvalue); | |
825 | if (r < 0) | |
826 | return log_oom(); | |
827 | } | |
828 | ||
829 | n = NULL; | |
830 | ||
831 | return 0; | |
832 | } | |
833 | ||
458d8ae3 | 834 | static int routing_policy_rule_read_full_file(const char *state_file, char **ret) { |
ac097c84 | 835 | _cleanup_free_ char *s = NULL; |
bce67bbe SS |
836 | size_t size; |
837 | int r; | |
838 | ||
839 | assert(state_file); | |
840 | ||
841 | r = read_full_file(state_file, &s, &size); | |
842 | if (r == -ENOENT) | |
843 | return -ENODATA; | |
844 | if (r < 0) | |
845 | return r; | |
846 | if (size <= 0) | |
847 | return -ENODATA; | |
848 | ||
ae2a15bc | 849 | *ret = TAKE_PTR(s); |
bce67bbe SS |
850 | |
851 | return size; | |
852 | } | |
853 | ||
458d8ae3 ZJS |
854 | int routing_policy_serialize_rules(Set *rules, FILE *f) { |
855 | RoutingPolicyRule *rule = NULL; | |
856 | Iterator i; | |
857 | int r; | |
858 | ||
859 | assert(f); | |
860 | ||
861 | SET_FOREACH(rule, rules, i) { | |
862 | _cleanup_free_ char *from_str = NULL, *to_str = NULL; | |
863 | bool space = false; | |
864 | ||
865 | fputs("RULE=", f); | |
866 | ||
867 | if (!in_addr_is_null(rule->family, &rule->from)) { | |
868 | r = in_addr_to_string(rule->family, &rule->from, &from_str); | |
869 | if (r < 0) | |
870 | return r; | |
871 | ||
872 | fprintf(f, "from=%s/%hhu", | |
873 | from_str, rule->from_prefixlen); | |
874 | space = true; | |
875 | } | |
876 | ||
877 | if (!in_addr_is_null(rule->family, &rule->to)) { | |
878 | r = in_addr_to_string(rule->family, &rule->to, &to_str); | |
879 | if (r < 0) | |
880 | return r; | |
881 | ||
882 | fprintf(f, "%sto=%s/%hhu", | |
883 | space ? " " : "", | |
884 | to_str, rule->to_prefixlen); | |
885 | space = true; | |
886 | } | |
887 | ||
888 | if (rule->tos != 0) { | |
889 | fprintf(f, "%stos=%hhu", | |
890 | space ? " " : "", | |
891 | rule->tos); | |
892 | space = true; | |
893 | } | |
894 | ||
895 | if (rule->fwmark != 0) { | |
896 | fprintf(f, "%sfwmark=%"PRIu32"/%"PRIu32, | |
897 | space ? " " : "", | |
898 | rule->fwmark, rule->fwmask); | |
899 | space = true; | |
900 | } | |
901 | ||
9491f55f ZJS |
902 | if (rule->iif) { |
903 | fprintf(f, "%siif=%s", | |
904 | space ? " " : "", | |
905 | rule->iif); | |
906 | space = true; | |
907 | } | |
908 | ||
909 | if (rule->oif) { | |
910 | fprintf(f, "%soif=%s", | |
911 | space ? " " : "", | |
912 | rule->oif); | |
913 | space = true; | |
914 | } | |
915 | ||
458d8ae3 ZJS |
916 | fprintf(f, "%stable=%"PRIu32 "\n", |
917 | space ? " " : "", | |
918 | rule->table); | |
919 | } | |
920 | ||
921 | return 0; | |
922 | } | |
923 | ||
924 | int routing_policy_load_rules(const char *state_file, Set **rules) { | |
bce67bbe SS |
925 | _cleanup_strv_free_ char **l = NULL; |
926 | _cleanup_free_ char *data = NULL; | |
927 | const char *p; | |
928 | char **i; | |
929 | int r; | |
930 | ||
458d8ae3 ZJS |
931 | assert(state_file); |
932 | assert(rules); | |
bce67bbe | 933 | |
458d8ae3 | 934 | r = routing_policy_rule_read_full_file(state_file, &data); |
bce67bbe SS |
935 | if (r <= 0) |
936 | return r; | |
937 | ||
938 | l = strv_split_newlines(data); | |
939 | if (!l) | |
940 | return -ENOMEM; | |
941 | ||
458d8ae3 | 942 | r = set_ensure_allocated(rules, &routing_policy_rule_hash_ops); |
bce67bbe SS |
943 | if (r < 0) |
944 | return r; | |
945 | ||
946 | STRV_FOREACH(i, l) { | |
8e766630 | 947 | _cleanup_(routing_policy_rule_freep) RoutingPolicyRule *rule = NULL; |
bce67bbe SS |
948 | |
949 | p = startswith(*i, "RULE="); | |
950 | if (!p) | |
951 | continue; | |
952 | ||
bce67bbe SS |
953 | r = routing_policy_rule_new(&rule); |
954 | if (r < 0) | |
955 | return r; | |
956 | ||
957 | for (;;) { | |
958 | _cleanup_free_ char *word = NULL, *a = NULL, *b = NULL; | |
959 | union in_addr_union buffer; | |
960 | uint8_t prefixlen; | |
961 | ||
962 | r = extract_first_word(&p, &word, NULL, 0); | |
963 | if (r < 0) | |
964 | return r; | |
965 | if (r == 0) | |
966 | break; | |
967 | ||
968 | r = split_pair(word, "=", &a, &b); | |
969 | if (r < 0) | |
970 | continue; | |
971 | ||
972 | if (STR_IN_SET(a, "from", "to")) { | |
973 | ||
974 | r = in_addr_prefix_from_string(b, AF_INET, &buffer, &prefixlen); | |
975 | if (r < 0) { | |
976 | r = in_addr_prefix_from_string(b, AF_INET6, &buffer, &prefixlen); | |
977 | if (r < 0) { | |
978 | log_error_errno(r, "RPDB rule prefix is invalid, ignoring assignment: %s", b); | |
979 | continue; | |
980 | } | |
981 | ||
982 | rule->family = AF_INET6; | |
983 | } else | |
984 | rule->family = AF_INET; | |
985 | ||
986 | if (streq(a, "to")) { | |
987 | rule->to = buffer; | |
988 | rule->to_prefixlen = prefixlen; | |
989 | } else { | |
990 | rule->from = buffer; | |
991 | rule->from_prefixlen = prefixlen; | |
992 | } | |
993 | } else if (streq(a, "tos")) { | |
994 | r = safe_atou8(b, &rule->tos); | |
995 | if (r < 0) { | |
996 | log_error_errno(r, "Failed to parse RPDB rule tos, ignoring: %s", b); | |
997 | continue; | |
998 | } | |
999 | } else if (streq(a, "table")) { | |
1000 | r = safe_atou32(b, &rule->table); | |
1001 | if (r < 0) { | |
1002 | log_error_errno(r, "Failed to parse RPDB rule table, ignoring: %s", b); | |
1003 | continue; | |
1004 | } | |
1005 | } else if (streq(a, "fwmark")) { | |
1006 | ||
e4aca57d | 1007 | r = parse_fwmark_fwmask(b, &rule->fwmark, &rule->fwmask); |
bce67bbe SS |
1008 | if (r < 0) { |
1009 | log_error_errno(r, "Failed to parse RPDB rule firewall mark or mask, ignoring: %s", a); | |
1010 | continue; | |
1011 | } | |
9491f55f | 1012 | } else if (streq(a, "iif")) { |
762e2659 | 1013 | |
93f9da6e | 1014 | if (free_and_strdup(&rule->iif, b) < 0) |
762e2659 | 1015 | return log_oom(); |
93f9da6e | 1016 | |
9491f55f | 1017 | } else if (streq(a, "oif")) { |
762e2659 | 1018 | |
93f9da6e | 1019 | if (free_and_strdup(&rule->oif, b) < 0) |
762e2659 | 1020 | return log_oom(); |
bce67bbe SS |
1021 | } |
1022 | } | |
1023 | ||
458d8ae3 | 1024 | r = set_put(*rules, rule); |
bce67bbe SS |
1025 | if (r < 0) { |
1026 | log_warning_errno(r, "Failed to add RPDB rule to saved DB, ignoring: %s", p); | |
1027 | continue; | |
1028 | } | |
1029 | ||
1030 | rule = NULL; | |
1031 | } | |
1032 | ||
1033 | return 0; | |
1034 | } | |
1035 | ||
1036 | void routing_policy_rule_purge(Manager *m, Link *link) { | |
1037 | RoutingPolicyRule *rule, *existing; | |
1038 | Iterator i; | |
1039 | int r; | |
1040 | ||
1041 | assert(m); | |
1042 | assert(link); | |
1043 | ||
1044 | SET_FOREACH(rule, m->rules_saved, i) { | |
1045 | existing = set_get(m->rules_foreign, rule); | |
1046 | if (existing) { | |
1047 | ||
1048 | r = routing_policy_rule_remove(rule, link, routing_policy_rule_remove_handler); | |
1049 | if (r < 0) { | |
1050 | log_warning_errno(r, "Could not remove routing policy rules: %m"); | |
1051 | continue; | |
1052 | } | |
1053 | ||
7715629e | 1054 | link->routing_policy_rule_remove_messages++; |
bce67bbe SS |
1055 | } |
1056 | } | |
1057 | } |