6 #include <netinet/in.h>
10 #include "interface-ip.h"
23 static const struct blobmsg_policy static_attrs[__OPT_MAX] = {
24 [OPT_IPADDR] = { .name = "ipaddr", .type = BLOBMSG_TYPE_ARRAY },
25 [OPT_IP6ADDR] = { .name = "ip6addr", .type = BLOBMSG_TYPE_ARRAY },
26 [OPT_NETMASK] = { .name = "netmask", .type = BLOBMSG_TYPE_STRING },
27 [OPT_GATEWAY] = { .name = "gateway", .type = BLOBMSG_TYPE_STRING },
28 [OPT_IP6GW] = { .name = "ip6gw", .type = BLOBMSG_TYPE_STRING },
31 static const union config_param_info static_attr_info[__OPT_MAX] = {
32 [OPT_IPADDR] = { .type = BLOBMSG_TYPE_STRING },
33 [OPT_IP6ADDR] = { .type = BLOBMSG_TYPE_STRING },
36 static const struct config_param_list static_attr_list = {
37 .n_params = __OPT_MAX,
38 .params = static_attrs,
39 .info = static_attr_info,
42 struct static_proto_state {
43 struct interface_proto_state proto;
45 struct blob_attr *config;
46 struct interface *iface;
50 split_netmask(char *str, unsigned int *netmask)
52 char *delim, *err = NULL;
54 delim = strchr(str, '/');
58 *netmask = strtoul(delim, &err, 10);
66 parse_ip_and_netmask(int af, const char *str, void *addr, unsigned int *netmask)
68 char *astr = alloca(strlen(str) + 1);
71 if (!split_netmask(astr, netmask))
82 return inet_pton(af, str, addr);
86 parse_addr(struct static_proto_state *state, const char *str, bool v6, int mask)
88 struct device_addr *addr;
89 int af = v6 ? AF_INET6 : AF_INET;
91 addr = calloc(1, sizeof(*addr));
92 addr->flags = v6 ? DEVADDR_INET6 : DEVADDR_INET4;
95 if (!parse_ip_and_netmask(af, str, &addr->addr, &addr->mask)) {
96 interface_add_error(state->iface, "proto-static", "INVALID_ADDRESS", &str, 1);
100 interface_add_address(state->iface, addr);
105 parse_address_option(struct static_proto_state *state, struct blob_attr *attr, bool v6, int netmask)
107 struct blob_attr *cur;
111 blobmsg_for_each_attr(cur, attr, rem) {
113 if (!parse_addr(state, blobmsg_data(cur), v6, netmask))
121 parse_gateway_option(struct static_proto_state *state, struct blob_attr *attr, bool v6)
123 struct device_route *route;
124 const char *str = blobmsg_data(attr);
125 int af = v6 ? AF_INET6 : AF_INET;
127 route = calloc(1, sizeof(*route));
128 if (!inet_pton(af, str, &route->nexthop)) {
129 interface_add_error(state->iface, "proto-static",
130 "INVALID_GATEWAY", &str, 1);
135 route->flags = DEVADDR_DEVICE | (v6 ? DEVADDR_INET6 : DEVADDR_INET4);
136 interface_add_route(state->iface, route);
142 static_proto_setup(struct static_proto_state *state)
144 struct blob_attr *tb[__OPT_MAX];
148 int n_v4 = 0, n_v6 = 0;
150 blobmsg_parse(static_attrs, __OPT_MAX, tb, blob_data(state->config),
151 blob_len(state->config));
153 if (tb[OPT_NETMASK]) {
154 if (!inet_aton(blobmsg_data(tb[OPT_NETMASK]), &ina)) {
155 error = "INVALID_NETMASK";
159 netmask = 32 - fls(~(ntohl(ina.s_addr)));
163 n_v4 = parse_address_option(state, tb[OPT_IPADDR], false, netmask);
166 n_v6 = parse_address_option(state, tb[OPT_IP6ADDR], true, netmask);
168 if (!n_v4 && !n_v6) {
169 error = "NO_ADDRESS";
173 if (n_v4 < 0 || n_v6 < 0)
176 if (n_v4 && tb[OPT_GATEWAY]) {
177 if (!parse_gateway_option(state, tb[OPT_GATEWAY], false))
181 if (n_v6 && tb[OPT_IP6GW]) {
182 if (!parse_gateway_option(state, tb[OPT_IP6GW], true))
189 interface_add_error(state->iface, "proto-static", error, NULL, 0);
195 static_handler(struct interface_proto_state *proto,
196 enum interface_proto_cmd cmd, bool force)
198 struct static_proto_state *state;
201 state = container_of(proto, struct static_proto_state, proto);
204 case PROTO_CMD_SETUP:
205 if (static_proto_setup(state))
209 case PROTO_CMD_TEARDOWN:
210 interface_del_ctx_addr(state->iface, state);
217 static_free(struct interface_proto_state *proto)
219 struct static_proto_state *state;
221 state = container_of(proto, struct static_proto_state, proto);
226 struct interface_proto_state *
227 static_attach(const struct proto_handler *h, struct interface *iface,
228 struct blob_attr *attr)
230 struct static_proto_state *state;
232 state = calloc(1, sizeof(*state));
236 state->iface = iface;
237 state->config = malloc(blob_pad_len(attr));
241 memcpy(state->config, attr, blob_pad_len(attr));
242 state->proto.free = static_free;
243 state->proto.handler = static_handler;
244 state->proto.flags = PROTO_FLAG_IMMEDIATE;
246 return &state->proto;
253 static struct proto_handler static_proto = {
255 .config_params = &static_attr_list,
256 .attach = static_attach,
260 static_proto_init(void)
262 add_proto_handler(&static_proto);