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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 "af-list.h" | |
7 | #include "alloc-util.h" | |
8 | #include "conf-parser.h" | |
9 | #include "fileio.h" | |
10 | #include "format-util.h" | |
11 | #include "ip-protocol-list.h" | |
12 | #include "networkd-routing-policy-rule.h" | |
13 | #include "netlink-util.h" | |
14 | #include "networkd-manager.h" | |
15 | #include "networkd-util.h" | |
16 | #include "parse-util.h" | |
17 | #include "socket-util.h" | |
18 | #include "string-util.h" | |
19 | #include "strv.h" | |
20 | #include "user-util.h" | |
21 | ||
22 | int routing_policy_rule_new(RoutingPolicyRule **ret) { | |
23 | RoutingPolicyRule *rule; | |
24 | ||
25 | rule = new(RoutingPolicyRule, 1); | |
26 | if (!rule) | |
27 | return -ENOMEM; | |
28 | ||
29 | *rule = (RoutingPolicyRule) { | |
30 | .table = RT_TABLE_MAIN, | |
31 | .uid_range.start = UID_INVALID, | |
32 | .uid_range.end = UID_INVALID, | |
33 | .suppress_prefixlen = -1, | |
34 | }; | |
35 | ||
36 | *ret = rule; | |
37 | return 0; | |
38 | } | |
39 | ||
40 | void routing_policy_rule_free(RoutingPolicyRule *rule) { | |
41 | ||
42 | if (!rule) | |
43 | return; | |
44 | ||
45 | if (rule->network) { | |
46 | LIST_REMOVE(rules, rule->network->rules, rule); | |
47 | assert(rule->network->n_rules > 0); | |
48 | rule->network->n_rules--; | |
49 | ||
50 | if (rule->section) | |
51 | hashmap_remove(rule->network->rules_by_section, rule->section); | |
52 | } | |
53 | ||
54 | if (rule->manager) { | |
55 | if (set_get(rule->manager->rules, rule) == rule) | |
56 | set_remove(rule->manager->rules, rule); | |
57 | if (set_get(rule->manager->rules_foreign, rule) == rule) | |
58 | set_remove(rule->manager->rules_foreign, rule); | |
59 | } | |
60 | ||
61 | network_config_section_free(rule->section); | |
62 | free(rule->iif); | |
63 | free(rule->oif); | |
64 | free(rule); | |
65 | } | |
66 | ||
67 | static int routing_policy_rule_copy(RoutingPolicyRule *dest, RoutingPolicyRule *src) { | |
68 | _cleanup_free_ char *iif = NULL, *oif = NULL; | |
69 | ||
70 | assert(dest); | |
71 | assert(src); | |
72 | ||
73 | if (src->iif) { | |
74 | iif = strdup(src->iif); | |
75 | if (!iif) | |
76 | return -ENOMEM; | |
77 | } | |
78 | ||
79 | if (src->oif) { | |
80 | oif = strdup(src->oif); | |
81 | if (!oif) | |
82 | return -ENOMEM; | |
83 | } | |
84 | ||
85 | dest->family = src->family; | |
86 | dest->from = src->from; | |
87 | dest->from_prefixlen = src->from_prefixlen; | |
88 | dest->to = src->to; | |
89 | dest->to_prefixlen = src->to_prefixlen; | |
90 | dest->invert_rule = src->invert_rule; | |
91 | dest->tos = src->tos; | |
92 | dest->fwmark = src->fwmark; | |
93 | dest->fwmask = src->fwmask; | |
94 | dest->priority = src->priority; | |
95 | dest->table = src->table; | |
96 | dest->iif = TAKE_PTR(iif); | |
97 | dest->oif = TAKE_PTR(oif); | |
98 | dest->protocol = src->protocol; | |
99 | dest->sport = src->sport; | |
100 | dest->dport = src->dport; | |
101 | dest->uid_range = src->uid_range; | |
102 | dest->suppress_prefixlen = src->suppress_prefixlen; | |
103 | ||
104 | return 0; | |
105 | } | |
106 | ||
107 | static void routing_policy_rule_hash_func(const RoutingPolicyRule *rule, struct siphash *state) { | |
108 | assert(rule); | |
109 | ||
110 | siphash24_compress(&rule->family, sizeof(rule->family), state); | |
111 | ||
112 | switch (rule->family) { | |
113 | case AF_INET: | |
114 | case AF_INET6: | |
115 | siphash24_compress(&rule->from, FAMILY_ADDRESS_SIZE(rule->family), state); | |
116 | siphash24_compress(&rule->from_prefixlen, sizeof(rule->from_prefixlen), state); | |
117 | ||
118 | siphash24_compress(&rule->to, FAMILY_ADDRESS_SIZE(rule->family), state); | |
119 | siphash24_compress(&rule->to_prefixlen, sizeof(rule->to_prefixlen), state); | |
120 | ||
121 | siphash24_compress_boolean(rule->invert_rule, state); | |
122 | ||
123 | siphash24_compress(&rule->tos, sizeof(rule->tos), state); | |
124 | siphash24_compress(&rule->fwmark, sizeof(rule->fwmark), state); | |
125 | siphash24_compress(&rule->fwmask, sizeof(rule->fwmask), state); | |
126 | siphash24_compress(&rule->priority, sizeof(rule->priority), state); | |
127 | siphash24_compress(&rule->table, sizeof(rule->table), state); | |
128 | siphash24_compress(&rule->suppress_prefixlen, sizeof(rule->suppress_prefixlen), state); | |
129 | ||
130 | siphash24_compress(&rule->protocol, sizeof(rule->protocol), state); | |
131 | siphash24_compress(&rule->sport, sizeof(rule->sport), state); | |
132 | siphash24_compress(&rule->dport, sizeof(rule->dport), state); | |
133 | siphash24_compress(&rule->uid_range, sizeof(rule->uid_range), state); | |
134 | ||
135 | if (rule->iif) | |
136 | siphash24_compress(rule->iif, strlen(rule->iif), state); | |
137 | ||
138 | if (rule->oif) | |
139 | siphash24_compress(rule->oif, strlen(rule->oif), state); | |
140 | ||
141 | break; | |
142 | default: | |
143 | /* treat any other address family as AF_UNSPEC */ | |
144 | break; | |
145 | } | |
146 | } | |
147 | ||
148 | static int routing_policy_rule_compare_func(const RoutingPolicyRule *a, const RoutingPolicyRule *b) { | |
149 | int r; | |
150 | ||
151 | r = CMP(a->family, b->family); | |
152 | if (r != 0) | |
153 | return r; | |
154 | ||
155 | switch (a->family) { | |
156 | case AF_INET: | |
157 | case AF_INET6: | |
158 | r = CMP(a->from_prefixlen, b->from_prefixlen); | |
159 | if (r != 0) | |
160 | return r; | |
161 | ||
162 | r = memcmp(&a->from, &b->from, FAMILY_ADDRESS_SIZE(a->family)); | |
163 | if (r != 0) | |
164 | return r; | |
165 | ||
166 | r = CMP(a->to_prefixlen, b->to_prefixlen); | |
167 | if (r != 0) | |
168 | return r; | |
169 | ||
170 | r = memcmp(&a->to, &b->to, FAMILY_ADDRESS_SIZE(a->family)); | |
171 | if (r != 0) | |
172 | return r; | |
173 | ||
174 | r = CMP(a->invert_rule, b->invert_rule); | |
175 | if (r != 0) | |
176 | return r; | |
177 | ||
178 | r = CMP(a->tos, b->tos); | |
179 | if (r != 0) | |
180 | return r; | |
181 | ||
182 | r = CMP(a->fwmark, b->fwmark); | |
183 | if (r != 0) | |
184 | return r; | |
185 | ||
186 | r = CMP(a->fwmask, b->fwmask); | |
187 | if (r != 0) | |
188 | return r; | |
189 | ||
190 | r = CMP(a->priority, b->priority); | |
191 | if (r != 0) | |
192 | return r; | |
193 | ||
194 | r = CMP(a->table, b->table); | |
195 | if (r != 0) | |
196 | return r; | |
197 | ||
198 | r = CMP(a->suppress_prefixlen, b->suppress_prefixlen); | |
199 | if (r != 0) | |
200 | return r; | |
201 | ||
202 | r = CMP(a->protocol, b->protocol); | |
203 | if (r != 0) | |
204 | return r; | |
205 | ||
206 | r = memcmp(&a->sport, &b->sport, sizeof(a->sport)); | |
207 | if (r != 0) | |
208 | return r; | |
209 | ||
210 | r = memcmp(&a->dport, &b->dport, sizeof(a->dport)); | |
211 | if (r != 0) | |
212 | return r; | |
213 | ||
214 | r = memcmp(&a->uid_range, &b->uid_range, sizeof(a->uid_range)); | |
215 | if (r != 0) | |
216 | return r; | |
217 | ||
218 | r = strcmp_ptr(a->iif, b->iif); | |
219 | if (r != 0) | |
220 | return r; | |
221 | ||
222 | r = strcmp_ptr(a->oif, b->oif); | |
223 | if (r != 0) | |
224 | return r; | |
225 | ||
226 | return 0; | |
227 | default: | |
228 | /* treat any other address family as AF_UNSPEC */ | |
229 | return 0; | |
230 | } | |
231 | } | |
232 | ||
233 | DEFINE_PRIVATE_HASH_OPS(routing_policy_rule_hash_ops, RoutingPolicyRule, routing_policy_rule_hash_func, routing_policy_rule_compare_func); | |
234 | ||
235 | int routing_policy_rule_get(Manager *m, RoutingPolicyRule *rule, RoutingPolicyRule **ret) { | |
236 | ||
237 | RoutingPolicyRule *existing; | |
238 | ||
239 | assert(m); | |
240 | ||
241 | existing = set_get(m->rules, rule); | |
242 | if (existing) { | |
243 | if (ret) | |
244 | *ret = existing; | |
245 | return 1; | |
246 | } | |
247 | ||
248 | existing = set_get(m->rules_foreign, rule); | |
249 | if (existing) { | |
250 | if (ret) | |
251 | *ret = existing; | |
252 | return 0; | |
253 | } | |
254 | ||
255 | return -ENOENT; | |
256 | } | |
257 | ||
258 | int routing_policy_rule_make_local(Manager *m, RoutingPolicyRule *rule) { | |
259 | int r; | |
260 | ||
261 | assert(m); | |
262 | ||
263 | if (set_contains(m->rules_foreign, rule)) { | |
264 | set_remove(m->rules_foreign, rule); | |
265 | ||
266 | r = set_ensure_put(&m->rules, &routing_policy_rule_hash_ops, rule); | |
267 | if (r < 0) | |
268 | return r; | |
269 | if (r == 0) | |
270 | routing_policy_rule_free(rule); | |
271 | } | |
272 | ||
273 | return -ENOENT; | |
274 | } | |
275 | ||
276 | static int routing_policy_rule_add_internal(Manager *m, Set **rules, RoutingPolicyRule *in, RoutingPolicyRule **ret) { | |
277 | _cleanup_(routing_policy_rule_freep) RoutingPolicyRule *rule = NULL; | |
278 | int r; | |
279 | ||
280 | assert(m); | |
281 | assert(rules); | |
282 | assert(in); | |
283 | ||
284 | r = routing_policy_rule_new(&rule); | |
285 | if (r < 0) | |
286 | return r; | |
287 | ||
288 | rule->manager = m; | |
289 | ||
290 | r = routing_policy_rule_copy(rule, in); | |
291 | if (r < 0) | |
292 | return r; | |
293 | ||
294 | r = set_ensure_put(rules, &routing_policy_rule_hash_ops, rule); | |
295 | if (r < 0) | |
296 | return r; | |
297 | if (r == 0) | |
298 | return -EEXIST; | |
299 | ||
300 | if (ret) | |
301 | *ret = rule; | |
302 | ||
303 | TAKE_PTR(rule); | |
304 | return 0; | |
305 | } | |
306 | ||
307 | static int routing_policy_rule_add(Manager *m, RoutingPolicyRule *rule, RoutingPolicyRule **ret) { | |
308 | return routing_policy_rule_add_internal(m, &m->rules, rule, ret); | |
309 | } | |
310 | ||
311 | int routing_policy_rule_add_foreign(Manager *m, RoutingPolicyRule *rule, RoutingPolicyRule **ret) { | |
312 | return routing_policy_rule_add_internal(m, &m->rules_foreign, rule, ret); | |
313 | } | |
314 | ||
315 | static int routing_policy_rule_remove_handler(sd_netlink *rtnl, sd_netlink_message *m, Link *link) { | |
316 | int r; | |
317 | ||
318 | assert(m); | |
319 | assert(link); | |
320 | assert(link->ifname); | |
321 | ||
322 | link->routing_policy_rule_remove_messages--; | |
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_message_warning_errno(link, m, r, "Could not drop routing policy rule"); | |
330 | ||
331 | return 1; | |
332 | } | |
333 | ||
334 | int routing_policy_rule_remove(RoutingPolicyRule *routing_policy_rule, Link *link, link_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_link_error_errno(link, r, "Could not allocate RTM_DELRULE message: %m"); | |
348 | ||
349 | if (in_addr_is_null(routing_policy_rule->family, &routing_policy_rule->from) == 0) { | |
350 | r = netlink_message_append_in_addr_union(m, FRA_SRC, routing_policy_rule->family, &routing_policy_rule->from); | |
351 | if (r < 0) | |
352 | return log_link_error_errno(link, r, "Could not append FRA_SRC attribute: %m"); | |
353 | ||
354 | r = sd_rtnl_message_routing_policy_rule_set_rtm_src_prefixlen(m, routing_policy_rule->from_prefixlen); | |
355 | if (r < 0) | |
356 | return log_link_error_errno(link, r, "Could not set source prefix length: %m"); | |
357 | } | |
358 | ||
359 | if (in_addr_is_null(routing_policy_rule->family, &routing_policy_rule->to) == 0) { | |
360 | r = netlink_message_append_in_addr_union(m, FRA_DST, routing_policy_rule->family, &routing_policy_rule->to); | |
361 | if (r < 0) | |
362 | return log_link_error_errno(link, r, "Could not append FRA_DST attribute: %m"); | |
363 | ||
364 | r = sd_rtnl_message_routing_policy_rule_set_rtm_dst_prefixlen(m, routing_policy_rule->to_prefixlen); | |
365 | if (r < 0) | |
366 | return log_link_error_errno(link, r, "Could not set destination prefix length: %m"); | |
367 | } | |
368 | ||
369 | r = netlink_call_async(link->manager->rtnl, NULL, m, | |
370 | callback ?: routing_policy_rule_remove_handler, | |
371 | link_netlink_destroy_callback, link); | |
372 | if (r < 0) | |
373 | return log_link_error_errno(link, r, "Could not send rtnetlink message: %m"); | |
374 | ||
375 | link_ref(link); | |
376 | ||
377 | return 0; | |
378 | } | |
379 | ||
380 | static int routing_policy_rule_new_static(Network *network, const char *filename, unsigned section_line, RoutingPolicyRule **ret) { | |
381 | _cleanup_(routing_policy_rule_freep) RoutingPolicyRule *rule = NULL; | |
382 | _cleanup_(network_config_section_freep) NetworkConfigSection *n = NULL; | |
383 | int r; | |
384 | ||
385 | assert(network); | |
386 | assert(ret); | |
387 | assert(!!filename == (section_line > 0)); | |
388 | ||
389 | if (filename) { | |
390 | r = network_config_section_new(filename, section_line, &n); | |
391 | if (r < 0) | |
392 | return r; | |
393 | ||
394 | rule = hashmap_get(network->rules_by_section, n); | |
395 | if (rule) { | |
396 | *ret = TAKE_PTR(rule); | |
397 | ||
398 | return 0; | |
399 | } | |
400 | } | |
401 | ||
402 | r = routing_policy_rule_new(&rule); | |
403 | if (r < 0) | |
404 | return r; | |
405 | ||
406 | rule->network = network; | |
407 | LIST_APPEND(rules, network->rules, rule); | |
408 | network->n_rules++; | |
409 | ||
410 | if (filename) { | |
411 | rule->section = TAKE_PTR(n); | |
412 | ||
413 | r = hashmap_ensure_allocated(&network->rules_by_section, &network_config_hash_ops); | |
414 | if (r < 0) | |
415 | return r; | |
416 | ||
417 | r = hashmap_put(network->rules_by_section, rule->section, rule); | |
418 | if (r < 0) | |
419 | return r; | |
420 | } | |
421 | ||
422 | *ret = TAKE_PTR(rule); | |
423 | ||
424 | return 0; | |
425 | } | |
426 | ||
427 | static int routing_policy_rule_handler(sd_netlink *rtnl, sd_netlink_message *m, Link *link) { | |
428 | int r; | |
429 | ||
430 | assert(rtnl); | |
431 | assert(m); | |
432 | assert(link); | |
433 | assert(link->ifname); | |
434 | assert(link->routing_policy_rule_messages > 0); | |
435 | ||
436 | link->routing_policy_rule_messages--; | |
437 | ||
438 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) | |
439 | return 1; | |
440 | ||
441 | r = sd_netlink_message_get_errno(m); | |
442 | if (r < 0 && r != -EEXIST) { | |
443 | log_link_message_warning_errno(link, m, r, "Could not add routing policy rule"); | |
444 | link_enter_failed(link); | |
445 | return 1; | |
446 | } | |
447 | ||
448 | if (link->routing_policy_rule_messages == 0) { | |
449 | log_link_debug(link, "Routing policy rule configured"); | |
450 | link->routing_policy_rules_configured = true; | |
451 | link_check_ready(link); | |
452 | } | |
453 | ||
454 | return 1; | |
455 | } | |
456 | ||
457 | int routing_policy_rule_configure(RoutingPolicyRule *rule, Link *link, link_netlink_message_handler_t callback) { | |
458 | _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *m = NULL; | |
459 | int r; | |
460 | ||
461 | assert(rule); | |
462 | assert(link); | |
463 | assert(link->ifindex > 0); | |
464 | assert(link->manager); | |
465 | assert(link->manager->rtnl); | |
466 | ||
467 | if (DEBUG_LOGGING) { | |
468 | _cleanup_free_ char *from = NULL, *to = NULL; | |
469 | ||
470 | (void) in_addr_to_string(rule->family, &rule->from, &from); | |
471 | (void) in_addr_to_string(rule->family, &rule->to, &to); | |
472 | ||
473 | log_link_debug(link, | |
474 | "Configuring routing policy rule: %s/%u -> %s/%u, iif: %s, oif: %s, table: %u", | |
475 | from, rule->from_prefixlen, to, rule->to_prefixlen, strna(rule->iif), strna(rule->oif), rule->table); | |
476 | } | |
477 | ||
478 | r = sd_rtnl_message_new_routing_policy_rule(link->manager->rtnl, &m, RTM_NEWRULE, rule->family); | |
479 | if (r < 0) | |
480 | return log_link_error_errno(link, r, "Could not allocate RTM_NEWRULE message: %m"); | |
481 | ||
482 | if (in_addr_is_null(rule->family, &rule->from) == 0) { | |
483 | r = netlink_message_append_in_addr_union(m, FRA_SRC, rule->family, &rule->from); | |
484 | if (r < 0) | |
485 | return log_link_error_errno(link, r, "Could not append FRA_SRC attribute: %m"); | |
486 | ||
487 | r = sd_rtnl_message_routing_policy_rule_set_rtm_src_prefixlen(m, rule->from_prefixlen); | |
488 | if (r < 0) | |
489 | return log_link_error_errno(link, r, "Could not set source prefix length: %m"); | |
490 | } | |
491 | ||
492 | if (in_addr_is_null(rule->family, &rule->to) == 0) { | |
493 | r = netlink_message_append_in_addr_union(m, FRA_DST, rule->family, &rule->to); | |
494 | if (r < 0) | |
495 | return log_link_error_errno(link, r, "Could not append FRA_DST attribute: %m"); | |
496 | ||
497 | r = sd_rtnl_message_routing_policy_rule_set_rtm_dst_prefixlen(m, rule->to_prefixlen); | |
498 | if (r < 0) | |
499 | return log_link_error_errno(link, r, "Could not set destination prefix length: %m"); | |
500 | } | |
501 | ||
502 | r = sd_netlink_message_append_u32(m, FRA_PRIORITY, rule->priority); | |
503 | if (r < 0) | |
504 | return log_link_error_errno(link, r, "Could not append FRA_PRIORITY attribute: %m"); | |
505 | ||
506 | if (rule->tos > 0) { | |
507 | r = sd_rtnl_message_routing_policy_rule_set_tos(m, rule->tos); | |
508 | if (r < 0) | |
509 | return log_link_error_errno(link, r, "Could not set ip rule tos: %m"); | |
510 | } | |
511 | ||
512 | if (rule->table < 256) { | |
513 | r = sd_rtnl_message_routing_policy_rule_set_table(m, rule->table); | |
514 | if (r < 0) | |
515 | return log_link_error_errno(link, r, "Could not set ip rule table: %m"); | |
516 | } else { | |
517 | r = sd_rtnl_message_routing_policy_rule_set_table(m, RT_TABLE_UNSPEC); | |
518 | if (r < 0) | |
519 | return log_link_error_errno(link, r, "Could not set ip rule table: %m"); | |
520 | ||
521 | r = sd_netlink_message_append_u32(m, FRA_TABLE, rule->table); | |
522 | if (r < 0) | |
523 | return log_link_error_errno(link, r, "Could not append FRA_TABLE attribute: %m"); | |
524 | } | |
525 | ||
526 | if (rule->fwmark > 0) { | |
527 | r = sd_netlink_message_append_u32(m, FRA_FWMARK, rule->fwmark); | |
528 | if (r < 0) | |
529 | return log_link_error_errno(link, r, "Could not append FRA_FWMARK attribute: %m"); | |
530 | } | |
531 | ||
532 | if (rule->fwmask > 0) { | |
533 | r = sd_netlink_message_append_u32(m, FRA_FWMASK, rule->fwmask); | |
534 | if (r < 0) | |
535 | return log_link_error_errno(link, r, "Could not append FRA_FWMASK attribute: %m"); | |
536 | } | |
537 | ||
538 | if (rule->iif) { | |
539 | r = sd_netlink_message_append_string(m, FRA_IFNAME, rule->iif); | |
540 | if (r < 0) | |
541 | return log_link_error_errno(link, r, "Could not append FRA_IFNAME attribute: %m"); | |
542 | } | |
543 | ||
544 | if (rule->oif) { | |
545 | r = sd_netlink_message_append_string(m, FRA_OIFNAME, rule->oif); | |
546 | if (r < 0) | |
547 | return log_link_error_errno(link, r, "Could not append FRA_OIFNAME attribute: %m"); | |
548 | } | |
549 | ||
550 | r = sd_netlink_message_append_u8(m, FRA_IP_PROTO, rule->protocol); | |
551 | if (r < 0) | |
552 | return log_link_error_errno(link, r, "Could not append FRA_IP_PROTO attribute: %m"); | |
553 | ||
554 | if (rule->sport.start != 0 || rule->sport.end != 0) { | |
555 | r = sd_netlink_message_append_data(m, FRA_SPORT_RANGE, &rule->sport, sizeof(rule->sport)); | |
556 | if (r < 0) | |
557 | return log_link_error_errno(link, r, "Could not append FRA_SPORT_RANGE attribute: %m"); | |
558 | } | |
559 | ||
560 | if (rule->dport.start != 0 || rule->dport.end != 0) { | |
561 | r = sd_netlink_message_append_data(m, FRA_DPORT_RANGE, &rule->dport, sizeof(rule->dport)); | |
562 | if (r < 0) | |
563 | return log_link_error_errno(link, r, "Could not append FRA_DPORT_RANGE attribute: %m"); | |
564 | } | |
565 | ||
566 | if (rule->uid_range.start != UID_INVALID && rule->uid_range.end != UID_INVALID) { | |
567 | r = sd_netlink_message_append_data(m, FRA_UID_RANGE, &rule->uid_range, sizeof(rule->uid_range)); | |
568 | if (r < 0) | |
569 | return log_link_error_errno(link, r, "Could not append FRA_UID_RANGE attribute: %m"); | |
570 | } | |
571 | ||
572 | if (rule->invert_rule) { | |
573 | r = sd_rtnl_message_routing_policy_rule_set_flags(m, FIB_RULE_INVERT); | |
574 | if (r < 0) | |
575 | return log_link_error_errno(link, r, "Could not append FIB_RULE_INVERT attribute: %m"); | |
576 | } | |
577 | ||
578 | if (rule->suppress_prefixlen >= 0) { | |
579 | r = sd_netlink_message_append_u32(m, FRA_SUPPRESS_PREFIXLEN, (uint32_t) rule->suppress_prefixlen); | |
580 | if (r < 0) | |
581 | return log_link_error_errno(link, r, "Could not append FRA_SUPPRESS_PREFIXLEN attribute: %m"); | |
582 | } | |
583 | ||
584 | rule->link = link; | |
585 | ||
586 | r = netlink_call_async(link->manager->rtnl, NULL, m, | |
587 | callback ?: routing_policy_rule_handler, | |
588 | link_netlink_destroy_callback, link); | |
589 | if (r < 0) | |
590 | return log_link_error_errno(link, r, "Could not send rtnetlink message: %m"); | |
591 | ||
592 | link_ref(link); | |
593 | ||
594 | r = routing_policy_rule_add(link->manager, rule, NULL); | |
595 | if (r < 0) | |
596 | return log_link_error_errno(link, r, "Could not add rule: %m"); | |
597 | ||
598 | return 1; | |
599 | } | |
600 | ||
601 | int routing_policy_rule_section_verify(RoutingPolicyRule *rule) { | |
602 | int r; | |
603 | ||
604 | if (section_is_invalid(rule->section)) | |
605 | return -EINVAL; | |
606 | ||
607 | if ((rule->family == AF_INET && FLAGS_SET(rule->address_family, ADDRESS_FAMILY_IPV6)) || | |
608 | (rule->family == AF_INET6 && FLAGS_SET(rule->address_family, ADDRESS_FAMILY_IPV4))) | |
609 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
610 | "%s: address family specified by Family= conflicts with the address " | |
611 | "specified by To= or From=. Ignoring [RoutingPolicyRule] section from line %u.", | |
612 | rule->section->filename, rule->section->line); | |
613 | ||
614 | if (FLAGS_SET(rule->address_family, ADDRESS_FAMILY_IPV4 | ADDRESS_FAMILY_IPV6)) { | |
615 | _cleanup_(routing_policy_rule_freep) RoutingPolicyRule *rule6 = NULL; | |
616 | ||
617 | assert(rule->family == AF_UNSPEC); | |
618 | ||
619 | /* When Family=both, we need to copy the section, AF_INET and AF_INET6. */ | |
620 | ||
621 | r = routing_policy_rule_new_static(rule->network, NULL, 0, &rule6); | |
622 | if (r < 0) | |
623 | return r; | |
624 | ||
625 | r = routing_policy_rule_copy(rule6, rule); | |
626 | if (r < 0) | |
627 | return r; | |
628 | ||
629 | rule->family = AF_INET; | |
630 | rule6->family = AF_INET6; | |
631 | ||
632 | TAKE_PTR(rule6); | |
633 | } | |
634 | ||
635 | if (rule->family == AF_UNSPEC) { | |
636 | if (FLAGS_SET(rule->address_family, ADDRESS_FAMILY_IPV6)) | |
637 | rule->family = AF_INET6; | |
638 | else | |
639 | rule->family = AF_INET; | |
640 | } | |
641 | ||
642 | return 0; | |
643 | } | |
644 | ||
645 | static int parse_fwmark_fwmask(const char *s, uint32_t *fwmark, uint32_t *fwmask) { | |
646 | _cleanup_free_ char *f = NULL; | |
647 | char *p; | |
648 | int r; | |
649 | ||
650 | assert(s); | |
651 | ||
652 | f = strdup(s); | |
653 | if (!f) | |
654 | return -ENOMEM; | |
655 | ||
656 | p = strchr(f, '/'); | |
657 | if (p) | |
658 | *p++ = '\0'; | |
659 | ||
660 | r = safe_atou32(f, fwmark); | |
661 | if (r < 0) | |
662 | return log_error_errno(r, "Failed to parse RPDB rule firewall mark, ignoring: %s", f); | |
663 | ||
664 | if (p) { | |
665 | r = safe_atou32(p, fwmask); | |
666 | if (r < 0) | |
667 | return log_error_errno(r, "Failed to parse RPDB rule mask, ignoring: %s", f); | |
668 | } | |
669 | ||
670 | return 0; | |
671 | } | |
672 | ||
673 | int config_parse_routing_policy_rule_tos( | |
674 | const char *unit, | |
675 | const char *filename, | |
676 | unsigned line, | |
677 | const char *section, | |
678 | unsigned section_line, | |
679 | const char *lvalue, | |
680 | int ltype, | |
681 | const char *rvalue, | |
682 | void *data, | |
683 | void *userdata) { | |
684 | ||
685 | _cleanup_(routing_policy_rule_free_or_set_invalidp) RoutingPolicyRule *n = NULL; | |
686 | Network *network = userdata; | |
687 | int r; | |
688 | ||
689 | assert(filename); | |
690 | assert(section); | |
691 | assert(lvalue); | |
692 | assert(rvalue); | |
693 | assert(data); | |
694 | ||
695 | r = routing_policy_rule_new_static(network, filename, section_line, &n); | |
696 | if (r < 0) | |
697 | return r; | |
698 | ||
699 | r = safe_atou8(rvalue, &n->tos); | |
700 | if (r < 0) { | |
701 | log_syntax(unit, LOG_ERR, filename, line, r, "Failed to parse RPDB rule tos, ignoring: %s", rvalue); | |
702 | return 0; | |
703 | } | |
704 | ||
705 | n = NULL; | |
706 | ||
707 | return 0; | |
708 | } | |
709 | ||
710 | int config_parse_routing_policy_rule_priority( | |
711 | const char *unit, | |
712 | const char *filename, | |
713 | unsigned line, | |
714 | const char *section, | |
715 | unsigned section_line, | |
716 | const char *lvalue, | |
717 | int ltype, | |
718 | const char *rvalue, | |
719 | void *data, | |
720 | void *userdata) { | |
721 | ||
722 | _cleanup_(routing_policy_rule_free_or_set_invalidp) RoutingPolicyRule *n = NULL; | |
723 | Network *network = userdata; | |
724 | int r; | |
725 | ||
726 | assert(filename); | |
727 | assert(section); | |
728 | assert(lvalue); | |
729 | assert(rvalue); | |
730 | assert(data); | |
731 | ||
732 | r = routing_policy_rule_new_static(network, filename, section_line, &n); | |
733 | if (r < 0) | |
734 | return r; | |
735 | ||
736 | r = safe_atou32(rvalue, &n->priority); | |
737 | if (r < 0) { | |
738 | log_syntax(unit, LOG_ERR, filename, line, r, "Failed to parse RPDB rule priority, ignoring: %s", rvalue); | |
739 | return 0; | |
740 | } | |
741 | ||
742 | n = NULL; | |
743 | ||
744 | return 0; | |
745 | } | |
746 | ||
747 | int config_parse_routing_policy_rule_table( | |
748 | const char *unit, | |
749 | const char *filename, | |
750 | unsigned line, | |
751 | const char *section, | |
752 | unsigned section_line, | |
753 | const char *lvalue, | |
754 | int ltype, | |
755 | const char *rvalue, | |
756 | void *data, | |
757 | void *userdata) { | |
758 | ||
759 | _cleanup_(routing_policy_rule_free_or_set_invalidp) RoutingPolicyRule *n = NULL; | |
760 | Network *network = userdata; | |
761 | int r; | |
762 | ||
763 | assert(filename); | |
764 | assert(section); | |
765 | assert(lvalue); | |
766 | assert(rvalue); | |
767 | assert(data); | |
768 | ||
769 | r = routing_policy_rule_new_static(network, filename, section_line, &n); | |
770 | if (r < 0) | |
771 | return r; | |
772 | ||
773 | r = safe_atou32(rvalue, &n->table); | |
774 | if (r < 0) { | |
775 | log_syntax(unit, LOG_ERR, filename, line, r, "Failed to parse RPDB rule table, ignoring: %s", rvalue); | |
776 | return 0; | |
777 | } | |
778 | ||
779 | n = NULL; | |
780 | ||
781 | return 0; | |
782 | } | |
783 | ||
784 | int config_parse_routing_policy_rule_fwmark_mask( | |
785 | const char *unit, | |
786 | const char *filename, | |
787 | unsigned line, | |
788 | const char *section, | |
789 | unsigned section_line, | |
790 | const char *lvalue, | |
791 | int ltype, | |
792 | const char *rvalue, | |
793 | void *data, | |
794 | void *userdata) { | |
795 | ||
796 | _cleanup_(routing_policy_rule_free_or_set_invalidp) RoutingPolicyRule *n = NULL; | |
797 | Network *network = userdata; | |
798 | int r; | |
799 | ||
800 | assert(filename); | |
801 | assert(section); | |
802 | assert(lvalue); | |
803 | assert(rvalue); | |
804 | assert(data); | |
805 | ||
806 | r = routing_policy_rule_new_static(network, filename, section_line, &n); | |
807 | if (r < 0) | |
808 | return r; | |
809 | ||
810 | r = parse_fwmark_fwmask(rvalue, &n->fwmark, &n->fwmask); | |
811 | if (r < 0) { | |
812 | log_syntax(unit, LOG_ERR, filename, line, r, "Failed to parse RPDB rule firewall mark or mask, ignoring: %s", rvalue); | |
813 | return 0; | |
814 | } | |
815 | ||
816 | n = NULL; | |
817 | ||
818 | return 0; | |
819 | } | |
820 | ||
821 | int config_parse_routing_policy_rule_prefix( | |
822 | const char *unit, | |
823 | const char *filename, | |
824 | unsigned line, | |
825 | const char *section, | |
826 | unsigned section_line, | |
827 | const char *lvalue, | |
828 | int ltype, | |
829 | const char *rvalue, | |
830 | void *data, | |
831 | void *userdata) { | |
832 | ||
833 | _cleanup_(routing_policy_rule_free_or_set_invalidp) RoutingPolicyRule *n = NULL; | |
834 | Network *network = userdata; | |
835 | union in_addr_union *buffer; | |
836 | uint8_t *prefixlen; | |
837 | int r; | |
838 | ||
839 | assert(filename); | |
840 | assert(section); | |
841 | assert(lvalue); | |
842 | assert(rvalue); | |
843 | assert(data); | |
844 | ||
845 | r = routing_policy_rule_new_static(network, filename, section_line, &n); | |
846 | if (r < 0) | |
847 | return r; | |
848 | ||
849 | if (streq(lvalue, "To")) { | |
850 | buffer = &n->to; | |
851 | prefixlen = &n->to_prefixlen; | |
852 | } else { | |
853 | buffer = &n->from; | |
854 | prefixlen = &n->from_prefixlen; | |
855 | } | |
856 | ||
857 | if (n->family == AF_UNSPEC) | |
858 | r = in_addr_prefix_from_string_auto(rvalue, &n->family, buffer, prefixlen); | |
859 | else | |
860 | r = in_addr_prefix_from_string(rvalue, n->family, buffer, prefixlen); | |
861 | if (r < 0) { | |
862 | log_syntax(unit, LOG_ERR, filename, line, r, "RPDB rule prefix is invalid, ignoring assignment: %s", rvalue); | |
863 | return 0; | |
864 | } | |
865 | ||
866 | n = NULL; | |
867 | ||
868 | return 0; | |
869 | } | |
870 | ||
871 | int config_parse_routing_policy_rule_device( | |
872 | const char *unit, | |
873 | const char *filename, | |
874 | unsigned line, | |
875 | const char *section, | |
876 | unsigned section_line, | |
877 | const char *lvalue, | |
878 | int ltype, | |
879 | const char *rvalue, | |
880 | void *data, | |
881 | void *userdata) { | |
882 | ||
883 | _cleanup_(routing_policy_rule_free_or_set_invalidp) RoutingPolicyRule *n = NULL; | |
884 | Network *network = userdata; | |
885 | int r; | |
886 | ||
887 | assert(filename); | |
888 | assert(section); | |
889 | assert(lvalue); | |
890 | assert(rvalue); | |
891 | assert(data); | |
892 | ||
893 | r = routing_policy_rule_new_static(network, filename, section_line, &n); | |
894 | if (r < 0) | |
895 | return r; | |
896 | ||
897 | if (!ifname_valid(rvalue)) { | |
898 | log_syntax(unit, LOG_ERR, filename, line, r, "Failed to parse '%s' interface name, ignoring: %s", lvalue, rvalue); | |
899 | return 0; | |
900 | } | |
901 | ||
902 | if (streq(lvalue, "IncomingInterface")) { | |
903 | r = free_and_strdup(&n->iif, rvalue); | |
904 | if (r < 0) | |
905 | return log_oom(); | |
906 | } else { | |
907 | r = free_and_strdup(&n->oif, rvalue); | |
908 | if (r < 0) | |
909 | return log_oom(); | |
910 | } | |
911 | ||
912 | n = NULL; | |
913 | ||
914 | return 0; | |
915 | } | |
916 | ||
917 | int config_parse_routing_policy_rule_port_range( | |
918 | const char *unit, | |
919 | const char *filename, | |
920 | unsigned line, | |
921 | const char *section, | |
922 | unsigned section_line, | |
923 | const char *lvalue, | |
924 | int ltype, | |
925 | const char *rvalue, | |
926 | void *data, | |
927 | void *userdata) { | |
928 | _cleanup_(routing_policy_rule_free_or_set_invalidp) RoutingPolicyRule *n = NULL; | |
929 | Network *network = userdata; | |
930 | uint16_t low, high; | |
931 | int r; | |
932 | ||
933 | assert(filename); | |
934 | assert(section); | |
935 | assert(lvalue); | |
936 | assert(rvalue); | |
937 | assert(data); | |
938 | ||
939 | r = routing_policy_rule_new_static(network, filename, section_line, &n); | |
940 | if (r < 0) | |
941 | return r; | |
942 | ||
943 | r = parse_ip_port_range(rvalue, &low, &high); | |
944 | if (r < 0) { | |
945 | log_syntax(unit, LOG_ERR, filename, line, r, "Failed to parse routing policy rule port range '%s'", rvalue); | |
946 | return 0; | |
947 | } | |
948 | ||
949 | if (streq(lvalue, "SourcePort")) { | |
950 | n->sport.start = low; | |
951 | n->sport.end = high; | |
952 | } else { | |
953 | n->dport.start = low; | |
954 | n->dport.end = high; | |
955 | } | |
956 | ||
957 | n = NULL; | |
958 | ||
959 | return 0; | |
960 | } | |
961 | ||
962 | int config_parse_routing_policy_rule_ip_protocol( | |
963 | const char *unit, | |
964 | const char *filename, | |
965 | unsigned line, | |
966 | const char *section, | |
967 | unsigned section_line, | |
968 | const char *lvalue, | |
969 | int ltype, | |
970 | const char *rvalue, | |
971 | void *data, | |
972 | void *userdata) { | |
973 | ||
974 | _cleanup_(routing_policy_rule_free_or_set_invalidp) RoutingPolicyRule *n = NULL; | |
975 | Network *network = userdata; | |
976 | int r; | |
977 | ||
978 | assert(filename); | |
979 | assert(section); | |
980 | assert(lvalue); | |
981 | assert(rvalue); | |
982 | assert(data); | |
983 | ||
984 | r = routing_policy_rule_new_static(network, filename, section_line, &n); | |
985 | if (r < 0) | |
986 | return r; | |
987 | ||
988 | r = parse_ip_protocol(rvalue); | |
989 | if (r < 0) { | |
990 | log_syntax(unit, LOG_ERR, filename, line, r, "Failed to parse IP protocol '%s' for routing policy rule, ignoring: %m", rvalue); | |
991 | return 0; | |
992 | } | |
993 | ||
994 | n->protocol = r; | |
995 | ||
996 | n = NULL; | |
997 | ||
998 | return 0; | |
999 | } | |
1000 | ||
1001 | int config_parse_routing_policy_rule_invert( | |
1002 | const char *unit, | |
1003 | const char *filename, | |
1004 | unsigned line, | |
1005 | const char *section, | |
1006 | unsigned section_line, | |
1007 | const char *lvalue, | |
1008 | int ltype, | |
1009 | const char *rvalue, | |
1010 | void *data, | |
1011 | void *userdata) { | |
1012 | ||
1013 | _cleanup_(routing_policy_rule_free_or_set_invalidp) RoutingPolicyRule *n = NULL; | |
1014 | Network *network = userdata; | |
1015 | int r; | |
1016 | ||
1017 | assert(filename); | |
1018 | assert(section); | |
1019 | assert(lvalue); | |
1020 | assert(rvalue); | |
1021 | assert(data); | |
1022 | ||
1023 | r = routing_policy_rule_new_static(network, filename, section_line, &n); | |
1024 | if (r < 0) | |
1025 | return r; | |
1026 | ||
1027 | r = parse_boolean(rvalue); | |
1028 | if (r < 0) { | |
1029 | log_syntax(unit, LOG_ERR, filename, line, r, "Failed to parse RPDB rule invert, ignoring: %s", rvalue); | |
1030 | return 0; | |
1031 | } | |
1032 | ||
1033 | n->invert_rule = r; | |
1034 | ||
1035 | n = NULL; | |
1036 | ||
1037 | return 0; | |
1038 | } | |
1039 | ||
1040 | int config_parse_routing_policy_rule_family( | |
1041 | const char *unit, | |
1042 | const char *filename, | |
1043 | unsigned line, | |
1044 | const char *section, | |
1045 | unsigned section_line, | |
1046 | const char *lvalue, | |
1047 | int ltype, | |
1048 | const char *rvalue, | |
1049 | void *data, | |
1050 | void *userdata) { | |
1051 | ||
1052 | _cleanup_(routing_policy_rule_free_or_set_invalidp) RoutingPolicyRule *n = NULL; | |
1053 | Network *network = userdata; | |
1054 | AddressFamily a; | |
1055 | int r; | |
1056 | ||
1057 | assert(filename); | |
1058 | assert(section); | |
1059 | assert(lvalue); | |
1060 | assert(rvalue); | |
1061 | assert(data); | |
1062 | ||
1063 | r = routing_policy_rule_new_static(network, filename, section_line, &n); | |
1064 | if (r < 0) | |
1065 | return r; | |
1066 | ||
1067 | a = routing_policy_rule_address_family_from_string(rvalue); | |
1068 | if (a < 0) { | |
1069 | log_syntax(unit, LOG_ERR, filename, line, 0, | |
1070 | "Invalid address family '%s', ignoring.", rvalue); | |
1071 | return 0; | |
1072 | } | |
1073 | ||
1074 | n->address_family = a; | |
1075 | n = NULL; | |
1076 | ||
1077 | return 0; | |
1078 | } | |
1079 | ||
1080 | int config_parse_routing_policy_rule_uid_range( | |
1081 | const char *unit, | |
1082 | const char *filename, | |
1083 | unsigned line, | |
1084 | const char *section, | |
1085 | unsigned section_line, | |
1086 | const char *lvalue, | |
1087 | int ltype, | |
1088 | const char *rvalue, | |
1089 | void *data, | |
1090 | void *userdata) { | |
1091 | ||
1092 | _cleanup_(routing_policy_rule_free_or_set_invalidp) RoutingPolicyRule *n = NULL; | |
1093 | Network *network = userdata; | |
1094 | uid_t start, end; | |
1095 | int r; | |
1096 | ||
1097 | assert(filename); | |
1098 | assert(section); | |
1099 | assert(lvalue); | |
1100 | assert(rvalue); | |
1101 | assert(data); | |
1102 | ||
1103 | r = routing_policy_rule_new_static(network, filename, section_line, &n); | |
1104 | if (r < 0) | |
1105 | return r; | |
1106 | ||
1107 | r = get_user_creds(&rvalue, &start, NULL, NULL, NULL, 0); | |
1108 | if (r >= 0) | |
1109 | end = start; | |
1110 | else { | |
1111 | r = parse_uid_range(rvalue, &start, &end); | |
1112 | if (r < 0) { | |
1113 | log_syntax(unit, LOG_ERR, filename, line, r, | |
1114 | "Invalid uid or uid range '%s', ignoring: %m", rvalue); | |
1115 | return 0; | |
1116 | } | |
1117 | } | |
1118 | ||
1119 | n->uid_range.start = start; | |
1120 | n->uid_range.end = end; | |
1121 | n = NULL; | |
1122 | ||
1123 | return 0; | |
1124 | } | |
1125 | ||
1126 | int config_parse_routing_policy_rule_suppress_prefixlen( | |
1127 | const char *unit, | |
1128 | const char *filename, | |
1129 | unsigned line, | |
1130 | const char *section, | |
1131 | unsigned section_line, | |
1132 | const char *lvalue, | |
1133 | int ltype, | |
1134 | const char *rvalue, | |
1135 | void *data, | |
1136 | void *userdata) { | |
1137 | ||
1138 | _cleanup_(routing_policy_rule_free_or_set_invalidp) RoutingPolicyRule *n = NULL; | |
1139 | Network *network = userdata; | |
1140 | int r; | |
1141 | ||
1142 | assert(filename); | |
1143 | assert(section); | |
1144 | assert(lvalue); | |
1145 | assert(rvalue); | |
1146 | assert(data); | |
1147 | ||
1148 | r = routing_policy_rule_new_static(network, filename, section_line, &n); | |
1149 | if (r < 0) | |
1150 | return r; | |
1151 | ||
1152 | r = parse_ip_prefix_length(rvalue, &n->suppress_prefixlen); | |
1153 | if (r == -ERANGE) { | |
1154 | log_syntax(unit, LOG_ERR, filename, line, r, "Prefix length outside of valid range 0-128, ignoring: %s", rvalue); | |
1155 | return 0; | |
1156 | } | |
1157 | if (r < 0) { | |
1158 | log_syntax(unit, LOG_ERR, filename, line, r, "Failed to parse RPDB rule suppress_prefixlen, ignoring: %s", rvalue); | |
1159 | return 0; | |
1160 | } | |
1161 | ||
1162 | n = NULL; | |
1163 | ||
1164 | return 0; | |
1165 | } | |
1166 | ||
1167 | static int routing_policy_rule_read_full_file(const char *state_file, char **ret) { | |
1168 | _cleanup_free_ char *s = NULL; | |
1169 | size_t size; | |
1170 | int r; | |
1171 | ||
1172 | assert(state_file); | |
1173 | ||
1174 | r = read_full_file(state_file, &s, &size); | |
1175 | if (r == -ENOENT) | |
1176 | return -ENODATA; | |
1177 | if (r < 0) | |
1178 | return r; | |
1179 | if (size <= 0) | |
1180 | return -ENODATA; | |
1181 | ||
1182 | *ret = TAKE_PTR(s); | |
1183 | ||
1184 | return size; | |
1185 | } | |
1186 | ||
1187 | int routing_policy_serialize_rules(Set *rules, FILE *f) { | |
1188 | RoutingPolicyRule *rule = NULL; | |
1189 | Iterator i; | |
1190 | int r; | |
1191 | ||
1192 | assert(f); | |
1193 | ||
1194 | SET_FOREACH(rule, rules, i) { | |
1195 | _cleanup_free_ char *from_str = NULL, *to_str = NULL; | |
1196 | bool space = false; | |
1197 | const char *family_str; | |
1198 | ||
1199 | fputs("RULE=", f); | |
1200 | ||
1201 | if (!in_addr_is_null(rule->family, &rule->from)) { | |
1202 | r = in_addr_to_string(rule->family, &rule->from, &from_str); | |
1203 | if (r < 0) | |
1204 | return r; | |
1205 | ||
1206 | fprintf(f, "from=%s/%hhu", | |
1207 | from_str, rule->from_prefixlen); | |
1208 | space = true; | |
1209 | } | |
1210 | ||
1211 | if (!in_addr_is_null(rule->family, &rule->to)) { | |
1212 | r = in_addr_to_string(rule->family, &rule->to, &to_str); | |
1213 | if (r < 0) | |
1214 | return r; | |
1215 | ||
1216 | fprintf(f, "%sto=%s/%hhu", | |
1217 | space ? " " : "", | |
1218 | to_str, rule->to_prefixlen); | |
1219 | space = true; | |
1220 | } | |
1221 | ||
1222 | family_str = af_to_name(rule->family); | |
1223 | if (family_str) | |
1224 | fprintf(f, "%sfamily=%s", | |
1225 | space ? " " : "", | |
1226 | family_str); | |
1227 | ||
1228 | if (rule->tos != 0) { | |
1229 | fprintf(f, "%stos=%hhu", | |
1230 | space ? " " : "", | |
1231 | rule->tos); | |
1232 | space = true; | |
1233 | } | |
1234 | ||
1235 | fprintf(f, "%spriority=%"PRIu32, | |
1236 | space ? " " : "", | |
1237 | rule->priority); | |
1238 | ||
1239 | if (rule->fwmark != 0) { | |
1240 | fprintf(f, "%sfwmark=%"PRIu32"/%"PRIu32, | |
1241 | space ? " " : "", | |
1242 | rule->fwmark, rule->fwmask); | |
1243 | space = true; | |
1244 | } | |
1245 | ||
1246 | if (rule->iif) { | |
1247 | fprintf(f, "%siif=%s", | |
1248 | space ? " " : "", | |
1249 | rule->iif); | |
1250 | space = true; | |
1251 | } | |
1252 | ||
1253 | if (rule->oif) { | |
1254 | fprintf(f, "%soif=%s", | |
1255 | space ? " " : "", | |
1256 | rule->oif); | |
1257 | space = true; | |
1258 | } | |
1259 | ||
1260 | if (rule->protocol != 0) { | |
1261 | fprintf(f, "%sprotocol=%hhu", | |
1262 | space ? " " : "", | |
1263 | rule->protocol); | |
1264 | space = true; | |
1265 | } | |
1266 | ||
1267 | if (rule->sport.start != 0 || rule->sport.end != 0) { | |
1268 | fprintf(f, "%ssourcesport=%"PRIu16"-%"PRIu16, | |
1269 | space ? " " : "", | |
1270 | rule->sport.start, rule->sport.end); | |
1271 | space = true; | |
1272 | } | |
1273 | ||
1274 | if (rule->dport.start != 0 || rule->dport.end != 0) { | |
1275 | fprintf(f, "%sdestinationport=%"PRIu16"-%"PRIu16, | |
1276 | space ? " " : "", | |
1277 | rule->dport.start, rule->dport.end); | |
1278 | space = true; | |
1279 | } | |
1280 | ||
1281 | if (rule->uid_range.start != UID_INVALID && rule->uid_range.end != UID_INVALID) { | |
1282 | assert_cc(sizeof(uid_t) == sizeof(uint32_t)); | |
1283 | fprintf(f, "%suidrange="UID_FMT"-"UID_FMT, | |
1284 | space ? " " : "", | |
1285 | rule->uid_range.start, rule->uid_range.end); | |
1286 | space = true; | |
1287 | } | |
1288 | ||
1289 | if (rule->suppress_prefixlen >= 0) { | |
1290 | fprintf(f, "%ssuppress_prefixlen=%d", | |
1291 | space ? " " : "", | |
1292 | rule->suppress_prefixlen); | |
1293 | space = true; | |
1294 | } | |
1295 | ||
1296 | fprintf(f, "%stable=%"PRIu32 "\n", | |
1297 | space ? " " : "", | |
1298 | rule->table); | |
1299 | } | |
1300 | ||
1301 | return 0; | |
1302 | } | |
1303 | ||
1304 | int routing_policy_load_rules(const char *state_file, Set **rules) { | |
1305 | _cleanup_strv_free_ char **l = NULL; | |
1306 | _cleanup_free_ char *data = NULL; | |
1307 | uint16_t low = 0, high = 0; | |
1308 | const char *p; | |
1309 | char **i; | |
1310 | int r; | |
1311 | ||
1312 | assert(state_file); | |
1313 | assert(rules); | |
1314 | ||
1315 | r = routing_policy_rule_read_full_file(state_file, &data); | |
1316 | if (r <= 0) | |
1317 | return r; | |
1318 | ||
1319 | l = strv_split_newlines(data); | |
1320 | if (!l) | |
1321 | return -ENOMEM; | |
1322 | ||
1323 | STRV_FOREACH(i, l) { | |
1324 | _cleanup_(routing_policy_rule_freep) RoutingPolicyRule *rule = NULL; | |
1325 | ||
1326 | p = startswith(*i, "RULE="); | |
1327 | if (!p) | |
1328 | continue; | |
1329 | ||
1330 | r = routing_policy_rule_new(&rule); | |
1331 | if (r < 0) | |
1332 | return r; | |
1333 | ||
1334 | for (;;) { | |
1335 | _cleanup_free_ char *word = NULL, *a = NULL, *b = NULL; | |
1336 | ||
1337 | r = extract_first_word(&p, &word, NULL, 0); | |
1338 | if (r < 0) | |
1339 | return r; | |
1340 | if (r == 0) | |
1341 | break; | |
1342 | ||
1343 | r = split_pair(word, "=", &a, &b); | |
1344 | if (r < 0) | |
1345 | continue; | |
1346 | ||
1347 | if (STR_IN_SET(a, "from", "to")) { | |
1348 | union in_addr_union *buffer; | |
1349 | uint8_t *prefixlen; | |
1350 | ||
1351 | if (streq(a, "to")) { | |
1352 | buffer = &rule->to; | |
1353 | prefixlen = &rule->to_prefixlen; | |
1354 | } else { | |
1355 | buffer = &rule->from; | |
1356 | prefixlen = &rule->from_prefixlen; | |
1357 | } | |
1358 | ||
1359 | r = in_addr_prefix_from_string_auto(b, &rule->family, buffer, prefixlen); | |
1360 | if (r < 0) { | |
1361 | log_error_errno(r, "RPDB rule prefix is invalid, ignoring assignment: %s", b); | |
1362 | continue; | |
1363 | } | |
1364 | ||
1365 | } else if (streq(a, "family")) { | |
1366 | r = af_from_name(b); | |
1367 | if (r < 0) { | |
1368 | log_error_errno(r, "Failed to parse RPDB rule family, ignoring: %s", b); | |
1369 | continue; | |
1370 | } | |
1371 | rule->family = r; | |
1372 | } else if (streq(a, "tos")) { | |
1373 | r = safe_atou8(b, &rule->tos); | |
1374 | if (r < 0) { | |
1375 | log_error_errno(r, "Failed to parse RPDB rule tos, ignoring: %s", b); | |
1376 | continue; | |
1377 | } | |
1378 | } else if (streq(a, "table")) { | |
1379 | r = safe_atou32(b, &rule->table); | |
1380 | if (r < 0) { | |
1381 | log_error_errno(r, "Failed to parse RPDB rule table, ignoring: %s", b); | |
1382 | continue; | |
1383 | } | |
1384 | } else if (streq(a, "priority")) { | |
1385 | r = safe_atou32(b, &rule->priority); | |
1386 | if (r < 0) { | |
1387 | log_error_errno(r, "Failed to parse RPDB rule priority, ignoring: %s", b); | |
1388 | continue; | |
1389 | } | |
1390 | } else if (streq(a, "fwmark")) { | |
1391 | r = parse_fwmark_fwmask(b, &rule->fwmark, &rule->fwmask); | |
1392 | if (r < 0) { | |
1393 | log_error_errno(r, "Failed to parse RPDB rule firewall mark or mask, ignoring: %s", a); | |
1394 | continue; | |
1395 | } | |
1396 | } else if (streq(a, "iif")) { | |
1397 | if (free_and_strdup(&rule->iif, b) < 0) | |
1398 | return log_oom(); | |
1399 | ||
1400 | } else if (streq(a, "oif")) { | |
1401 | ||
1402 | if (free_and_strdup(&rule->oif, b) < 0) | |
1403 | return log_oom(); | |
1404 | } else if (streq(a, "protocol")) { | |
1405 | r = safe_atou8(b, &rule->protocol); | |
1406 | if (r < 0) { | |
1407 | log_error_errno(r, "Failed to parse RPDB rule protocol, ignoring: %s", b); | |
1408 | continue; | |
1409 | } | |
1410 | } else if (streq(a, "sourceport")) { | |
1411 | r = parse_ip_port_range(b, &low, &high); | |
1412 | if (r < 0) { | |
1413 | log_error_errno(r, "Invalid routing policy rule source port range, ignoring assignment: '%s'", b); | |
1414 | continue; | |
1415 | } | |
1416 | ||
1417 | rule->sport.start = low; | |
1418 | rule->sport.end = high; | |
1419 | } else if (streq(a, "destinationport")) { | |
1420 | r = parse_ip_port_range(b, &low, &high); | |
1421 | if (r < 0) { | |
1422 | log_error_errno(r, "Invalid routing policy rule destination port range, ignoring assignment: '%s'", b); | |
1423 | continue; | |
1424 | } | |
1425 | ||
1426 | rule->dport.start = low; | |
1427 | rule->dport.end = high; | |
1428 | } else if (streq(a, "uidrange")) { | |
1429 | uid_t lower, upper; | |
1430 | ||
1431 | r = parse_uid_range(b, &lower, &upper); | |
1432 | if (r < 0) { | |
1433 | log_error_errno(r, "Invalid routing policy rule uid range, ignoring assignment: '%s'", b); | |
1434 | continue; | |
1435 | } | |
1436 | ||
1437 | rule->uid_range.start = lower; | |
1438 | rule->uid_range.end = upper; | |
1439 | } else if (streq(a, "suppress_prefixlen")) { | |
1440 | r = parse_ip_prefix_length(b, &rule->suppress_prefixlen); | |
1441 | if (r == -ERANGE) { | |
1442 | log_error_errno(r, "Prefix length outside of valid range 0-128, ignoring: %s", b); | |
1443 | continue; | |
1444 | } | |
1445 | if (r < 0) { | |
1446 | log_error_errno(r, "Failed to parse RPDB rule suppress_prefixlen, ignoring: %s", b); | |
1447 | continue; | |
1448 | } | |
1449 | } | |
1450 | } | |
1451 | ||
1452 | r = set_ensure_put(rules, &routing_policy_rule_hash_ops, rule); | |
1453 | if (r < 0) { | |
1454 | log_warning_errno(r, "Failed to add RPDB rule to saved DB, ignoring: %s", p); | |
1455 | continue; | |
1456 | } | |
1457 | if (r > 0) | |
1458 | rule = NULL; | |
1459 | } | |
1460 | ||
1461 | return 0; | |
1462 | } | |
1463 | ||
1464 | static bool manager_links_have_routing_policy_rule(Manager *m, RoutingPolicyRule *rule) { | |
1465 | RoutingPolicyRule *link_rule; | |
1466 | Iterator i; | |
1467 | Link *link; | |
1468 | ||
1469 | assert(m); | |
1470 | assert(rule); | |
1471 | ||
1472 | HASHMAP_FOREACH(link, m->links, i) { | |
1473 | if (!link->network) | |
1474 | continue; | |
1475 | ||
1476 | LIST_FOREACH(rules, link_rule, link->network->rules) | |
1477 | if (routing_policy_rule_compare_func(link_rule, rule) == 0) | |
1478 | return true; | |
1479 | } | |
1480 | ||
1481 | return false; | |
1482 | } | |
1483 | ||
1484 | void routing_policy_rule_purge(Manager *m, Link *link) { | |
1485 | RoutingPolicyRule *rule, *existing; | |
1486 | Iterator i; | |
1487 | int r; | |
1488 | ||
1489 | assert(m); | |
1490 | assert(link); | |
1491 | ||
1492 | SET_FOREACH(rule, m->rules_saved, i) { | |
1493 | existing = set_get(m->rules_foreign, rule); | |
1494 | if (!existing) | |
1495 | continue; /* Saved rule does not exist anymore. */ | |
1496 | ||
1497 | if (manager_links_have_routing_policy_rule(m, existing)) | |
1498 | continue; /* Existing links have the saved rule. */ | |
1499 | ||
1500 | /* Existing links do not have the saved rule. Let's drop the rule now, and re-configure it | |
1501 | * later when it is requested. */ | |
1502 | ||
1503 | r = routing_policy_rule_remove(existing, link, NULL); | |
1504 | if (r < 0) { | |
1505 | log_warning_errno(r, "Could not remove routing policy rules: %m"); | |
1506 | continue; | |
1507 | } | |
1508 | ||
1509 | link->routing_policy_rule_remove_messages++; | |
1510 | ||
1511 | assert_se(set_remove(m->rules_foreign, existing) == existing); | |
1512 | routing_policy_rule_free(existing); | |
1513 | } | |
1514 | } |