2 * netifd - network interface daemon
3 * Copyright (C) 2012 Felix Fietkau <nbd@openwrt.org>
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License version 2
7 * as published by the Free Software Foundation
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
18 #include <arpa/inet.h>
19 #include <netinet/in.h>
23 #include "interface.h"
24 #include "interface-ip.h"
27 static struct avl_tree handlers;
41 static const struct blobmsg_policy proto_ip_attributes[__OPT_MAX] = {
42 [OPT_IPADDR] = { .name = "ipaddr", .type = BLOBMSG_TYPE_ARRAY },
43 [OPT_IP6ADDR] = { .name = "ip6addr", .type = BLOBMSG_TYPE_ARRAY },
44 [OPT_NETMASK] = { .name = "netmask", .type = BLOBMSG_TYPE_STRING },
45 [OPT_BROADCAST] = { .name = "broadcast", .type = BLOBMSG_TYPE_STRING },
46 [OPT_GATEWAY] = { .name = "gateway", .type = BLOBMSG_TYPE_STRING },
47 [OPT_IP6GW] = { .name = "ip6gw", .type = BLOBMSG_TYPE_STRING },
48 [OPT_IP6PREFIX] = { .name = "ip6prefix", .type = BLOBMSG_TYPE_ARRAY },
49 [OPT_IP6ASSIGN] = { .name = "ip6assign", .type = BLOBMSG_TYPE_INT32 },
52 static const union config_param_info proto_ip_attr_info[__OPT_MAX] = {
53 [OPT_IPADDR] = { .type = BLOBMSG_TYPE_STRING },
54 [OPT_IP6ADDR] = { .type = BLOBMSG_TYPE_STRING },
55 [OPT_IP6PREFIX] = { .type = BLOBMSG_TYPE_STRING },
58 const struct config_param_list proto_ip_attr = {
59 .n_params = __OPT_MAX,
60 .params = proto_ip_attributes,
61 .info = proto_ip_attr_info,
72 static const struct blobmsg_policy proto_ip_addr[__ADDR_MAX] = {
73 [ADDR_IPADDR] = { .name = "ipaddr", .type = BLOBMSG_TYPE_STRING },
74 [ADDR_MASK] = { .name = "mask", .type = BLOBMSG_TYPE_STRING },
75 [ADDR_BROADCAST] = { .name = "broadcast", .type = BLOBMSG_TYPE_STRING },
76 [ADDR_PTP] = { .name = "ptp", .type = BLOBMSG_TYPE_STRING },
79 static struct device_addr *
80 alloc_device_addr(bool v6, bool ext)
82 struct device_addr *addr;
84 addr = calloc(1, sizeof(*addr));
85 addr->flags = v6 ? DEVADDR_INET6 : DEVADDR_INET4;
87 addr->flags |= DEVADDR_EXTERNAL;
93 parse_addr(struct interface *iface, const char *str, bool v6, int mask,
94 bool ext, uint32_t broadcast)
96 struct device_addr *addr;
97 int af = v6 ? AF_INET6 : AF_INET;
99 addr = alloc_device_addr(v6, ext);
104 if (!parse_ip_and_netmask(af, str, &addr->addr, &addr->mask)) {
105 interface_add_error(iface, "proto", "INVALID_ADDRESS", &str, 1);
111 addr->broadcast = broadcast;
113 vlist_add(&iface->proto_ip.addr, &addr->node, &addr->flags);
118 parse_static_address_option(struct interface *iface, struct blob_attr *attr,
119 bool v6, int netmask, bool ext, uint32_t broadcast)
121 struct blob_attr *cur;
125 blobmsg_for_each_attr(cur, attr, rem) {
126 if (blobmsg_type(cur) != BLOBMSG_TYPE_STRING)
130 if (!parse_addr(iface, blobmsg_data(cur), v6, netmask, ext,
138 static struct device_addr *
139 parse_address_item(struct blob_attr *attr, bool v6, bool ext)
141 struct device_addr *addr;
142 struct blob_attr *tb[__ADDR_MAX];
143 struct blob_attr *cur;
145 if (blobmsg_type(attr) != BLOBMSG_TYPE_TABLE)
148 addr = alloc_device_addr(v6, ext);
152 blobmsg_parse(proto_ip_addr, __ADDR_MAX, tb, blobmsg_data(attr), blobmsg_data_len(attr));
154 addr->mask = v6 ? 128 : 32;
155 if ((cur = tb[ADDR_MASK])) {
156 unsigned int new_mask;
158 new_mask = parse_netmask_string(blobmsg_data(cur), v6);
159 if (new_mask > addr->mask)
162 addr->mask = new_mask;
165 cur = tb[ADDR_IPADDR];
169 if (!inet_pton(v6 ? AF_INET6 : AF_INET, blobmsg_data(cur), &addr->addr))
173 if ((cur = tb[ADDR_BROADCAST]) &&
174 !inet_pton(AF_INET, blobmsg_data(cur), &addr->broadcast))
176 if ((cur = tb[ADDR_PTP]) &&
177 !inet_pton(AF_INET, blobmsg_data(cur), &addr->point_to_point))
189 parse_address_list(struct interface *iface, struct blob_attr *attr, bool v6,
192 struct device_addr *addr;
193 struct blob_attr *cur;
197 blobmsg_for_each_attr(cur, attr, rem) {
198 addr = parse_address_item(cur, v6, ext);
203 vlist_add(&iface->proto_ip.addr, &addr->node, &addr->flags);
210 parse_gateway_option(struct interface *iface, struct blob_attr *attr, bool v6)
212 struct device_route *route;
213 const char *str = blobmsg_data(attr);
214 int af = v6 ? AF_INET6 : AF_INET;
216 route = calloc(1, sizeof(*route));
217 if (!inet_pton(af, str, &route->nexthop)) {
218 interface_add_error(iface, "proto", "INVALID_GATEWAY", &str, 1);
224 route->flags = (v6 ? DEVADDR_INET6 : DEVADDR_INET4);
225 vlist_add(&iface->proto_ip.route, &route->node, &route->flags);
231 parse_ip6assign_option(struct interface *iface, struct blob_attr *attr)
233 uint8_t oldval = iface->proto_ip.assignment_length;
234 uint8_t newval = blobmsg_get_u32(attr);
236 struct device_prefix *prefix;
237 list_for_each_entry(prefix, &prefixes, head) {
238 if (oldval && oldval != newval)
239 interface_ip_set_prefix_assignment(prefix, iface, 0);
241 if (newval && newval <= 64)
242 interface_ip_set_prefix_assignment(prefix, iface, newval);
245 iface->proto_ip.assignment_length = newval;
250 parse_prefix_option(struct interface *iface, const char *str, size_t len)
252 char buf[128] = {0}, *saveptr;
253 if (len > sizeof(buf))
256 memcpy(buf, str, len);
257 char *addrstr = strtok_r(buf, "/", &saveptr);
261 char *lengthstr = strtok_r(NULL, ",", &saveptr);
265 char *prefstr = strtok_r(NULL, ",", &saveptr);
266 char *validstr = (!prefstr) ? NULL : strtok_r(NULL, ",", &saveptr);
268 uint32_t pref = (!prefstr) ? 0 : strtoul(prefstr, NULL, 10);
269 uint32_t valid = (!validstr) ? 0 : strtoul(validstr, NULL, 10);
271 uint8_t length = strtoul(lengthstr, NULL, 10);
272 if (length < 1 || length > 64)
275 struct in6_addr addr;
276 if (inet_pton(AF_INET6, addrstr, &addr) < 1)
279 time_t now = system_get_rtime();
280 time_t preferred_until = 0;
281 if (prefstr && pref != 0xffffffffU)
282 preferred_until = pref + now;
284 time_t valid_until = 0;
285 if (validstr && valid != 0xffffffffU)
286 valid_until = valid + now;
288 interface_ip_add_device_prefix(iface, &addr, length,
289 valid_until, preferred_until);
294 parse_prefix_list(struct interface *iface, struct blob_attr *attr)
296 struct blob_attr *cur;
300 blobmsg_for_each_attr(cur, attr, rem) {
301 if (blobmsg_type(cur) != BLOBMSG_TYPE_STRING)
305 if (!parse_prefix_option(iface, blobmsg_data(cur),
306 blobmsg_data_len(cur)))
314 proto_apply_static_ip_settings(struct interface *iface, struct blob_attr *attr)
316 struct blob_attr *tb[__OPT_MAX];
317 struct blob_attr *cur;
319 unsigned int netmask = 32;
320 int n_v4 = 0, n_v6 = 0;
321 struct in_addr bcast = {};
323 blobmsg_parse(proto_ip_attributes, __OPT_MAX, tb, blob_data(attr), blob_len(attr));
325 if ((cur = tb[OPT_NETMASK])) {
326 netmask = parse_netmask_string(blobmsg_data(cur), false);
328 error = "INVALID_NETMASK";
333 if ((cur = tb[OPT_BROADCAST])) {
334 if (!inet_pton(AF_INET, blobmsg_data(cur), &bcast)) {
335 error = "INVALID_BROADCAST";
340 if ((cur = tb[OPT_IPADDR]))
341 n_v4 = parse_static_address_option(iface, cur, false,
342 netmask, false, bcast.s_addr);
344 if ((cur = tb[OPT_IP6ADDR]))
345 n_v6 = parse_static_address_option(iface, cur, true,
348 if ((cur = tb[OPT_IP6PREFIX]))
349 if (parse_prefix_list(iface, cur) < 0)
353 if (!n_v4 && !n_v6) {
354 error = "NO_ADDRESS";
359 if (n_v4 < 0 || n_v6 < 0)
362 if ((cur = tb[OPT_GATEWAY])) {
363 if (n_v4 && !parse_gateway_option(iface, cur, false))
367 if ((cur = tb[OPT_IP6GW])) {
368 if (n_v6 && !parse_gateway_option(iface, cur, true))
372 if ((cur = tb[OPT_IP6ASSIGN]))
373 if (!parse_ip6assign_option(iface, cur))
379 interface_add_error(iface, "proto", error, NULL, 0);
385 proto_apply_ip_settings(struct interface *iface, struct blob_attr *attr, bool ext)
387 struct blob_attr *tb[__OPT_MAX];
388 struct blob_attr *cur;
389 // const char *error;
390 int n_v4 = 0, n_v6 = 0;
392 blobmsg_parse(proto_ip_attributes, __OPT_MAX, tb, blob_data(attr), blob_len(attr));
394 if ((cur = tb[OPT_IPADDR]))
395 n_v4 = parse_address_list(iface, cur, false, ext);
397 if ((cur = tb[OPT_IP6ADDR]))
398 n_v6 = parse_address_list(iface, cur, true, ext);
400 if ((cur = tb[OPT_IP6PREFIX]))
401 if (parse_prefix_list(iface, cur) < 0)
405 if (!n_v4 && !n_v6) {
406 error = "NO_ADDRESS";
411 if (n_v4 < 0 || n_v6 < 0)
414 if ((cur = tb[OPT_GATEWAY])) {
415 if (n_v4 && !parse_gateway_option(iface, cur, false))
419 if ((cur = tb[OPT_IP6GW])) {
420 if (n_v6 && !parse_gateway_option(iface, cur, true))
424 if ((cur = tb[OPT_IP6ASSIGN]))
425 if (!parse_ip6assign_option(iface, cur))
432 interface_add_error(iface, "proto", error, NULL, 0);
438 void add_proto_handler(struct proto_handler *p)
441 avl_init(&handlers, avl_strcmp, false, NULL);
446 p->avl.key = p->name;
447 avl_insert(&handlers, &p->avl);
451 default_proto_free(struct interface_proto_state *proto)
457 invalid_proto_handler(struct interface_proto_state *proto,
458 enum interface_proto_cmd cmd, bool force)
464 no_proto_handler(struct interface_proto_state *proto,
465 enum interface_proto_cmd cmd, bool force)
470 static struct interface_proto_state *
471 default_proto_attach(const struct proto_handler *h,
472 struct interface *iface, struct blob_attr *attr)
474 struct interface_proto_state *proto;
476 proto = calloc(1, sizeof(*proto));
477 proto->free = default_proto_free;
478 proto->cb = no_proto_handler;
483 static const struct proto_handler no_proto = {
485 .flags = PROTO_FLAG_IMMEDIATE,
486 .attach = default_proto_attach,
489 static const struct proto_handler *
490 get_proto_handler(const char *name)
492 struct proto_handler *proto;
494 if (!strcmp(name, "none"))
500 return avl_find_element(&handlers, name, proto, avl);
504 proto_dump_handlers(struct blob_buf *b)
506 struct proto_handler *p;
509 avl_for_each_element(&handlers, p, avl) {
510 c = blobmsg_open_table(b, p->name);
511 blobmsg_add_u8(b, "no_device", !!(p->flags & PROTO_FLAG_NODEV));
512 blobmsg_close_table(b, c);
517 proto_init_interface(struct interface *iface, struct blob_attr *attr)
519 const struct proto_handler *proto = iface->proto_handler;
520 struct interface_proto_state *state = NULL;
525 state = proto->attach(proto, iface, attr);
527 state = no_proto.attach(&no_proto, iface, attr);
528 state->cb = invalid_proto_handler;
531 state->handler = proto;
532 interface_set_proto_state(iface, state);
536 proto_attach_interface(struct interface *iface, const char *proto_name)
538 const struct proto_handler *proto = &no_proto;
541 proto = get_proto_handler(proto_name);
543 interface_add_error(iface, "proto", "INVALID_PROTO", NULL, 0);
548 iface->proto_handler = proto;
552 interface_proto_event(struct interface_proto_state *proto,
553 enum interface_proto_cmd cmd, bool force)
555 enum interface_proto_event ev;
558 ret = proto->cb(proto, cmd, force);
559 if (ret || !(proto->handler->flags & PROTO_FLAG_IMMEDIATE))
563 case PROTO_CMD_SETUP:
566 case PROTO_CMD_TEARDOWN:
572 proto->proto_event(proto, ev);