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;
40 static const struct blobmsg_policy proto_ip_attributes[__OPT_MAX] = {
41 [OPT_IPADDR] = { .name = "ipaddr", .type = BLOBMSG_TYPE_ARRAY },
42 [OPT_IP6ADDR] = { .name = "ip6addr", .type = BLOBMSG_TYPE_ARRAY },
43 [OPT_NETMASK] = { .name = "netmask", .type = BLOBMSG_TYPE_STRING },
44 [OPT_BROADCAST] = { .name = "broadcast", .type = BLOBMSG_TYPE_STRING },
45 [OPT_GATEWAY] = { .name = "gateway", .type = BLOBMSG_TYPE_STRING },
46 [OPT_IP6GW] = { .name = "ip6gw", .type = BLOBMSG_TYPE_STRING },
47 [OPT_IP6PREFIX] = { .name = "ip6prefix", .type = BLOBMSG_TYPE_ARRAY },
50 static const union config_param_info proto_ip_attr_info[__OPT_MAX] = {
51 [OPT_IPADDR] = { .type = BLOBMSG_TYPE_STRING },
52 [OPT_IP6ADDR] = { .type = BLOBMSG_TYPE_STRING },
53 [OPT_IP6PREFIX] = { .type = BLOBMSG_TYPE_STRING },
56 const struct config_param_list proto_ip_attr = {
57 .n_params = __OPT_MAX,
58 .params = proto_ip_attributes,
59 .info = proto_ip_attr_info,
73 static const struct blobmsg_policy proto_ip_addr[__ADDR_MAX] = {
74 [ADDR_IPADDR] = { .name = "ipaddr", .type = BLOBMSG_TYPE_STRING },
75 [ADDR_MASK] = { .name = "mask", .type = BLOBMSG_TYPE_STRING },
76 [ADDR_BROADCAST] = { .name = "broadcast", .type = BLOBMSG_TYPE_STRING },
77 [ADDR_PTP] = { .name = "ptp", .type = BLOBMSG_TYPE_STRING },
78 [ADDR_PREFERRED] = { .name = "preferred", .type = BLOBMSG_TYPE_INT32 },
79 [ADDR_VALID] = { .name = "valid", .type = BLOBMSG_TYPE_INT32 },
80 [ADDR_OFFLINK] = { .name = "offlink", .type = BLOBMSG_TYPE_BOOL },
83 static struct device_addr *
84 alloc_device_addr(bool v6, bool ext)
86 struct device_addr *addr;
88 addr = calloc(1, sizeof(*addr));
89 addr->flags = v6 ? DEVADDR_INET6 : DEVADDR_INET4;
91 addr->flags |= DEVADDR_EXTERNAL;
97 parse_addr(struct interface *iface, const char *str, bool v6, int mask,
98 bool ext, uint32_t broadcast)
100 struct device_addr *addr;
101 int af = v6 ? AF_INET6 : AF_INET;
103 addr = alloc_device_addr(v6, ext);
108 if (!parse_ip_and_netmask(af, str, &addr->addr, &addr->mask)) {
109 interface_add_error(iface, "proto", "INVALID_ADDRESS", &str, 1);
115 addr->broadcast = broadcast;
117 vlist_add(&iface->proto_ip.addr, &addr->node, &addr->flags);
122 parse_static_address_option(struct interface *iface, struct blob_attr *attr,
123 bool v6, int netmask, bool ext, uint32_t broadcast)
125 struct blob_attr *cur;
129 blobmsg_for_each_attr(cur, attr, rem) {
130 if (blobmsg_type(cur) != BLOBMSG_TYPE_STRING)
134 if (!parse_addr(iface, blobmsg_data(cur), v6, netmask, ext,
142 static struct device_addr *
143 parse_address_item(struct blob_attr *attr, bool v6, bool ext)
145 struct device_addr *addr;
146 struct blob_attr *tb[__ADDR_MAX];
147 struct blob_attr *cur;
149 if (blobmsg_type(attr) != BLOBMSG_TYPE_TABLE)
152 addr = alloc_device_addr(v6, ext);
156 blobmsg_parse(proto_ip_addr, __ADDR_MAX, tb, blobmsg_data(attr), blobmsg_data_len(attr));
158 addr->mask = v6 ? 128 : 32;
159 if ((cur = tb[ADDR_MASK])) {
160 unsigned int new_mask;
162 new_mask = parse_netmask_string(blobmsg_data(cur), v6);
163 if (new_mask > addr->mask)
166 addr->mask = new_mask;
169 cur = tb[ADDR_IPADDR];
173 if (!inet_pton(v6 ? AF_INET6 : AF_INET, blobmsg_data(cur), &addr->addr))
176 if ((cur = tb[ADDR_OFFLINK]) && blobmsg_get_bool(cur))
177 addr->flags |= DEVADDR_OFFLINK;
180 if ((cur = tb[ADDR_BROADCAST]) &&
181 !inet_pton(AF_INET, blobmsg_data(cur), &addr->broadcast))
183 if ((cur = tb[ADDR_PTP]) &&
184 !inet_pton(AF_INET, blobmsg_data(cur), &addr->point_to_point))
187 time_t now = system_get_rtime();
188 if ((cur = tb[ADDR_PREFERRED])) {
189 uint32_t preferred = blobmsg_get_u32(cur);
190 if (preferred < UINT32_MAX)
191 addr->preferred_until = now + preferred;
194 if ((cur = tb[ADDR_VALID])) {
195 uint32_t valid = blobmsg_get_u32(cur);
196 if (valid < UINT32_MAX)
197 addr->valid_until = now + valid;
201 if (addr->valid_until) {
202 if (!addr->preferred_until)
203 addr->preferred_until = addr->valid_until;
204 else if (addr->preferred_until > addr->valid_until)
217 parse_address_list(struct interface *iface, struct blob_attr *attr, bool v6,
220 struct device_addr *addr;
221 struct blob_attr *cur;
225 blobmsg_for_each_attr(cur, attr, rem) {
226 addr = parse_address_item(cur, v6, ext);
231 vlist_add(&iface->proto_ip.addr, &addr->node, &addr->flags);
238 parse_gateway_option(struct interface *iface, struct blob_attr *attr, bool v6)
240 struct device_route *route;
241 const char *str = blobmsg_data(attr);
242 int af = v6 ? AF_INET6 : AF_INET;
244 route = calloc(1, sizeof(*route));
245 if (!inet_pton(af, str, &route->nexthop)) {
246 interface_add_error(iface, "proto", "INVALID_GATEWAY", &str, 1);
252 route->flags = (v6 ? DEVADDR_INET6 : DEVADDR_INET4);
253 vlist_add(&iface->proto_ip.route, &route->node, &route->flags);
259 parse_prefix_option(struct interface *iface, const char *str, size_t len)
261 char buf[128] = {0}, *saveptr;
262 if (len > sizeof(buf))
265 memcpy(buf, str, len);
266 char *addrstr = strtok_r(buf, "/", &saveptr);
270 char *lengthstr = strtok_r(NULL, ",", &saveptr);
274 char *prefstr = strtok_r(NULL, ",", &saveptr);
275 char *validstr = (!prefstr) ? NULL : strtok_r(NULL, ",", &saveptr);
276 char *excludestr = (!validstr) ? NULL : strtok_r(NULL, ",", &saveptr);
278 uint32_t pref = (!prefstr) ? 0 : strtoul(prefstr, NULL, 10);
279 uint32_t valid = (!validstr) ? 0 : strtoul(validstr, NULL, 10);
281 uint8_t length = strtoul(lengthstr, NULL, 10), excl_length = 0;
282 if (length < 1 || length > 64)
285 struct in6_addr addr, excluded, *excludedp = NULL;
286 if (inet_pton(AF_INET6, addrstr, &addr) < 1)
290 char *sep = strchr(excludestr, '/');
295 excl_length = atoi(sep + 1);
297 if (inet_pton(AF_INET6, excludestr, &excluded) < 1)
300 excludedp = &excluded;
303 time_t now = system_get_rtime();
304 time_t preferred_until = 0;
305 if (prefstr && pref != 0xffffffffU)
306 preferred_until = pref + now;
308 time_t valid_until = 0;
309 if (validstr && valid != 0xffffffffU)
310 valid_until = valid + now;
312 interface_ip_add_device_prefix(iface, &addr, length,
313 valid_until, preferred_until,
314 excludedp, excl_length);
319 parse_prefix_list(struct interface *iface, struct blob_attr *attr)
321 struct blob_attr *cur;
325 blobmsg_for_each_attr(cur, attr, rem) {
326 if (blobmsg_type(cur) != BLOBMSG_TYPE_STRING)
330 if (!parse_prefix_option(iface, blobmsg_data(cur),
331 blobmsg_data_len(cur)))
339 proto_apply_static_ip_settings(struct interface *iface, struct blob_attr *attr)
341 struct blob_attr *tb[__OPT_MAX];
342 struct blob_attr *cur;
344 unsigned int netmask = 32;
345 int n_v4 = 0, n_v6 = 0;
346 struct in_addr bcast = {};
348 blobmsg_parse(proto_ip_attributes, __OPT_MAX, tb, blob_data(attr), blob_len(attr));
350 if ((cur = tb[OPT_NETMASK])) {
351 netmask = parse_netmask_string(blobmsg_data(cur), false);
353 error = "INVALID_NETMASK";
358 if ((cur = tb[OPT_BROADCAST])) {
359 if (!inet_pton(AF_INET, blobmsg_data(cur), &bcast)) {
360 error = "INVALID_BROADCAST";
365 if ((cur = tb[OPT_IPADDR]))
366 n_v4 = parse_static_address_option(iface, cur, false,
367 netmask, false, bcast.s_addr);
369 if ((cur = tb[OPT_IP6ADDR]))
370 n_v6 = parse_static_address_option(iface, cur, true,
373 if ((cur = tb[OPT_IP6PREFIX]))
374 if (parse_prefix_list(iface, cur) < 0)
377 if (n_v4 < 0 || n_v6 < 0)
380 if ((cur = tb[OPT_GATEWAY])) {
381 if (n_v4 && !parse_gateway_option(iface, cur, false))
385 if ((cur = tb[OPT_IP6GW])) {
386 if (n_v6 && !parse_gateway_option(iface, cur, true))
393 interface_add_error(iface, "proto", error, NULL, 0);
399 proto_apply_ip_settings(struct interface *iface, struct blob_attr *attr, bool ext)
401 struct blob_attr *tb[__OPT_MAX];
402 struct blob_attr *cur;
403 int n_v4 = 0, n_v6 = 0;
405 blobmsg_parse(proto_ip_attributes, __OPT_MAX, tb, blob_data(attr), blob_len(attr));
407 if ((cur = tb[OPT_IPADDR]))
408 n_v4 = parse_address_list(iface, cur, false, ext);
410 if ((cur = tb[OPT_IP6ADDR]))
411 n_v6 = parse_address_list(iface, cur, true, ext);
413 if ((cur = tb[OPT_IP6PREFIX]))
414 if (parse_prefix_list(iface, cur) < 0)
417 if (n_v4 < 0 || n_v6 < 0)
420 if ((cur = tb[OPT_GATEWAY])) {
421 if (n_v4 && !parse_gateway_option(iface, cur, false))
425 if ((cur = tb[OPT_IP6GW])) {
426 if (n_v6 && !parse_gateway_option(iface, cur, true))
436 void add_proto_handler(struct proto_handler *p)
439 avl_init(&handlers, avl_strcmp, false, NULL);
444 p->avl.key = p->name;
445 avl_insert(&handlers, &p->avl);
449 default_proto_free(struct interface_proto_state *proto)
455 invalid_proto_handler(struct interface_proto_state *proto,
456 enum interface_proto_cmd cmd, bool force)
462 no_proto_handler(struct interface_proto_state *proto,
463 enum interface_proto_cmd cmd, bool force)
468 static struct interface_proto_state *
469 default_proto_attach(const struct proto_handler *h,
470 struct interface *iface, struct blob_attr *attr)
472 struct interface_proto_state *proto;
474 proto = calloc(1, sizeof(*proto));
475 proto->free = default_proto_free;
476 proto->cb = no_proto_handler;
481 static const struct proto_handler no_proto = {
483 .flags = PROTO_FLAG_IMMEDIATE,
484 .attach = default_proto_attach,
487 static const struct proto_handler *
488 get_proto_handler(const char *name)
490 struct proto_handler *proto;
492 if (!strcmp(name, "none"))
498 return avl_find_element(&handlers, name, proto, avl);
502 proto_dump_handlers(struct blob_buf *b)
504 struct proto_handler *p;
507 avl_for_each_element(&handlers, p, avl) {
508 c = blobmsg_open_table(b, p->name);
509 blobmsg_add_u8(b, "no_device", !!(p->flags & PROTO_FLAG_NODEV));
510 blobmsg_close_table(b, c);
515 proto_init_interface(struct interface *iface, struct blob_attr *attr)
517 const struct proto_handler *proto = iface->proto_handler;
518 struct interface_proto_state *state = NULL;
523 state = proto->attach(proto, iface, attr);
525 state = no_proto.attach(&no_proto, iface, attr);
526 state->cb = invalid_proto_handler;
529 state->handler = proto;
530 interface_set_proto_state(iface, state);
534 proto_attach_interface(struct interface *iface, const char *proto_name)
536 const struct proto_handler *proto = &no_proto;
539 proto = get_proto_handler(proto_name);
541 interface_add_error(iface, "proto", "INVALID_PROTO", NULL, 0);
546 iface->proto_handler = proto;
550 interface_proto_event(struct interface_proto_state *proto,
551 enum interface_proto_cmd cmd, bool force)
553 enum interface_proto_event ev;
556 ret = proto->cb(proto, cmd, force);
557 if (ret || !(proto->handler->flags & PROTO_FLAG_IMMEDIATE))
561 case PROTO_CMD_SETUP:
564 case PROTO_CMD_TEARDOWN:
570 proto->proto_event(proto, ev);