6 #include <netinet/in.h>
10 #include "interface-ip.h"
13 static struct avl_tree handlers;
26 static const struct blobmsg_policy proto_ip_attributes[__OPT_MAX] = {
27 [OPT_IPADDR] = { .name = "ipaddr", .type = BLOBMSG_TYPE_ARRAY },
28 [OPT_IP6ADDR] = { .name = "ip6addr", .type = BLOBMSG_TYPE_ARRAY },
29 [OPT_NETMASK] = { .name = "netmask", .type = BLOBMSG_TYPE_STRING },
30 [OPT_GATEWAY] = { .name = "gateway", .type = BLOBMSG_TYPE_STRING },
31 [OPT_IP6GW] = { .name = "ip6gw", .type = BLOBMSG_TYPE_STRING },
32 [OPT_DNS] = { .name = "dns", .type = BLOBMSG_TYPE_ARRAY },
33 [OPT_DNS_SEARCH] = { .name = "dns_search", .type = BLOBMSG_TYPE_ARRAY },
36 static const union config_param_info proto_ip_attr_info[__OPT_MAX] = {
37 [OPT_IPADDR] = { .type = BLOBMSG_TYPE_STRING },
38 [OPT_IP6ADDR] = { .type = BLOBMSG_TYPE_STRING },
39 [OPT_DNS] = { .type = BLOBMSG_TYPE_STRING },
42 const struct config_param_list proto_ip_attr = {
43 .n_params = __OPT_MAX,
44 .params = proto_ip_attributes,
45 .info = proto_ip_attr_info,
50 parse_netmask_string(const char *str, bool v6)
56 if (!strchr(str, '.')) {
57 ret = strtoul(str, &err, 0);
67 if (inet_aton(str, &addr) != 1)
70 return 32 - fls(~(ntohl(addr.s_addr)));
77 split_netmask(char *str, unsigned int *netmask, bool v6)
79 char *delim = strchr(str, '/');
84 *netmask = parse_netmask_string(delim, v6);
90 parse_ip_and_netmask(int af, const char *str, void *addr, unsigned int *netmask)
92 char *astr = alloca(strlen(str) + 1);
95 if (!split_netmask(astr, netmask, af == AF_INET6))
106 return inet_pton(af, astr, addr);
110 proto_parse_ip_addr_string(const char *str, bool v6, int mask)
112 struct device_addr *addr;
113 int af = v6 ? AF_INET6 : AF_INET;
115 addr = calloc(1, sizeof(*addr));
116 addr->flags = v6 ? DEVADDR_INET6 : DEVADDR_INET4;
118 if (!parse_ip_and_netmask(af, str, &addr->addr, &addr->mask)) {
126 parse_addr(struct interface *iface, const char *str, bool v6, int mask, bool ext)
128 struct device_addr *addr;
130 addr = proto_parse_ip_addr_string(str, v6, mask);
132 interface_add_error(iface, "proto", "INVALID_ADDRESS", &str, 1);
137 addr->flags |= DEVADDR_EXTERNAL;
139 vlist_add(&iface->proto_ip.addr, &addr->node);
144 parse_address_option(struct interface *iface, struct blob_attr *attr, bool v6, int netmask, bool ext)
146 struct blob_attr *cur;
150 blobmsg_for_each_attr(cur, attr, rem) {
151 if (blobmsg_type(cur) != BLOBMSG_TYPE_STRING)
155 if (!parse_addr(iface, blobmsg_data(cur), v6, netmask, ext))
164 parse_gateway_option(struct interface *iface, struct blob_attr *attr, bool v6)
166 struct device_route *route;
167 const char *str = blobmsg_data(attr);
168 int af = v6 ? AF_INET6 : AF_INET;
170 route = calloc(1, sizeof(*route));
171 if (!inet_pton(af, str, &route->nexthop)) {
172 interface_add_error(iface, "proto", "INVALID_GATEWAY", &str, 1);
178 route->flags = DEVADDR_DEVICE | (v6 ? DEVADDR_INET6 : DEVADDR_INET4);
179 vlist_add(&iface->proto_ip.route, &route->node);
185 proto_apply_ip_settings(struct interface *iface, struct blob_attr *attr, bool ext)
187 struct blob_attr *tb[__OPT_MAX];
189 unsigned int netmask = 32;
190 int n_v4 = 0, n_v6 = 0;
192 blobmsg_parse(proto_ip_attributes, __OPT_MAX, tb, blob_data(attr), blob_len(attr));
194 if (tb[OPT_NETMASK]) {
195 netmask = parse_netmask_string(blobmsg_data(tb[OPT_NETMASK]), false);
197 error = "INVALID_NETMASK";
203 n_v4 = parse_address_option(iface, tb[OPT_IPADDR], false, netmask, ext);
206 n_v6 = parse_address_option(iface, tb[OPT_IP6ADDR], true, netmask, ext);
208 if (!n_v4 && !n_v6) {
209 error = "NO_ADDRESS";
213 if (n_v4 < 0 || n_v6 < 0)
216 if (n_v4 && tb[OPT_GATEWAY]) {
217 if (!parse_gateway_option(iface, tb[OPT_GATEWAY], false))
221 if (n_v6 && tb[OPT_IP6GW]) {
222 if (!parse_gateway_option(iface, tb[OPT_IP6GW], true))
227 interface_add_dns_server_list(&iface->proto_ip, tb[OPT_DNS]);
229 if (tb[OPT_DNS_SEARCH])
230 interface_add_dns_search_list(&iface->proto_ip, tb[OPT_DNS_SEARCH]);
235 interface_add_error(iface, "proto", error, NULL, 0);
240 void add_proto_handler(struct proto_handler *p)
243 avl_init(&handlers, avl_strcmp, false, NULL);
248 p->avl.key = p->name;
249 avl_insert(&handlers, &p->avl);
253 default_proto_free(struct interface_proto_state *proto)
259 invalid_proto_handler(struct interface_proto_state *proto,
260 enum interface_proto_cmd cmd, bool force)
266 no_proto_handler(struct interface_proto_state *proto,
267 enum interface_proto_cmd cmd, bool force)
272 static struct interface_proto_state *
273 default_proto_attach(const struct proto_handler *h,
274 struct interface *iface, struct blob_attr *attr)
276 struct interface_proto_state *proto;
278 proto = calloc(1, sizeof(*proto));
279 proto->free = default_proto_free;
280 proto->cb = no_proto_handler;
285 static const struct proto_handler no_proto = {
287 .flags = PROTO_FLAG_IMMEDIATE,
288 .attach = default_proto_attach,
291 static const struct proto_handler *
292 get_proto_handler(const char *name)
294 struct proto_handler *proto;
296 if (!strcmp(name, "none"))
302 return avl_find_element(&handlers, name, proto, avl);
306 proto_init_interface(struct interface *iface, struct blob_attr *attr)
308 const struct proto_handler *proto = iface->proto_handler;
309 struct interface_proto_state *state = NULL;
314 state = proto->attach(proto, iface, attr);
316 state = no_proto.attach(&no_proto, iface, attr);
317 state->cb = invalid_proto_handler;
320 state->handler = proto;
321 interface_set_proto_state(iface, state);
325 proto_attach_interface(struct interface *iface, const char *proto_name)
327 const struct proto_handler *proto = &no_proto;
330 proto = get_proto_handler(proto_name);
332 interface_add_error(iface, "proto", "INVALID_PROTO", NULL, 0);
337 iface->proto_handler = proto;
341 interface_proto_event(struct interface_proto_state *proto,
342 enum interface_proto_cmd cmd, bool force)
344 enum interface_proto_event ev;
347 ret = proto->cb(proto, cmd, force);
348 if (ret || !(proto->handler->flags & PROTO_FLAG_IMMEDIATE))
352 case PROTO_CMD_SETUP:
355 case PROTO_CMD_TEARDOWN:
361 proto->proto_event(proto, ev);