+static bool
+split_netmask(char *str, unsigned int *netmask)
+{
+ char *delim, *err = NULL;
+
+ delim = strchr(str, '/');
+ if (delim) {
+ *(delim++) = 0;
+
+ *netmask = strtoul(delim, &err, 10);
+ if (err && *err)
+ return false;
+ }
+ return true;
+}
+
+static int
+parse_ip_and_netmask(int af, const char *str, void *addr, unsigned int *netmask)
+{
+ char *astr = alloca(strlen(str) + 1);
+
+ strcpy(astr, str);
+ if (!split_netmask(astr, netmask))
+ return 0;
+
+ if (af == AF_INET6) {
+ if (*netmask > 128)
+ return 0;
+ } else {
+ if (*netmask > 32)
+ return 0;
+ }
+
+ return inet_pton(af, str, addr);
+}
+
+static bool
+parse_addr(struct interface_proto_state *state, const char *str, bool v6, int mask)
+{
+ struct device_addr *addr;
+ int af = v6 ? AF_INET6 : AF_INET;
+
+ addr = calloc(1, sizeof(*addr));
+ addr->flags = v6 ? DEVADDR_INET6 : DEVADDR_INET4;
+ addr->mask = mask;
+ if (!parse_ip_and_netmask(af, str, &addr->addr, &addr->mask)) {
+ interface_add_error(state->iface, "proto-static", "INVALID_ADDRESS", &str, 1);
+ free(addr);
+ return false;
+ }
+ vlist_add(&state->iface->proto_addr, &addr->node);
+ return true;
+}
+
+static int
+parse_address_option(struct interface_proto_state *state, struct blob_attr *attr, bool v6, int netmask)
+{
+ struct blob_attr *cur;
+ int n_addr = 0;
+ int rem;
+
+ blobmsg_for_each_attr(cur, attr, rem) {
+ n_addr++;
+ if (!parse_addr(state, blobmsg_data(cur), v6, netmask))
+ return -1;
+ }
+
+ return n_addr;
+}
+
+static bool
+parse_gateway_option(struct interface_proto_state *state, struct blob_attr *attr, bool v6)
+{
+ struct device_route *route;
+ const char *str = blobmsg_data(attr);
+ int af = v6 ? AF_INET6 : AF_INET;
+
+ route = calloc(1, sizeof(*route));
+ if (!inet_pton(af, str, &route->nexthop)) {
+ interface_add_error(state->iface, "proto-static",
+ "INVALID_GATEWAY", &str, 1);
+ free(route);
+ return false;
+ }
+ route->mask = 0;
+ route->flags = DEVADDR_DEVICE | (v6 ? DEVADDR_INET6 : DEVADDR_INET4);
+ vlist_add(&state->iface->proto_route, &route->node);
+
+ return true;
+}
+
+int
+proto_apply_static_settings(struct interface_proto_state *state, struct blob_attr *attr)
+{
+ struct blob_attr *tb[__OPT_MAX];
+ struct in_addr ina;
+ const char *error;
+ int netmask = 32;
+ int n_v4 = 0, n_v6 = 0;
+
+ blobmsg_parse(static_attrs, __OPT_MAX, tb, blob_data(attr), blob_len(attr));
+
+ if (tb[OPT_NETMASK]) {
+ if (!inet_aton(blobmsg_data(tb[OPT_NETMASK]), &ina)) {
+ error = "INVALID_NETMASK";
+ goto error;
+ }
+
+ netmask = 32 - fls(~(ntohl(ina.s_addr)));
+ }
+
+ if (tb[OPT_IPADDR])
+ n_v4 = parse_address_option(state, tb[OPT_IPADDR], false, netmask);
+
+ if (tb[OPT_IP6ADDR])
+ n_v6 = parse_address_option(state, tb[OPT_IP6ADDR], true, netmask);
+
+ if (!n_v4 && !n_v6) {
+ error = "NO_ADDRESS";
+ goto error;
+ }
+
+ if (n_v4 < 0 || n_v6 < 0)
+ goto out;
+
+ if (n_v4 && tb[OPT_GATEWAY]) {
+ if (!parse_gateway_option(state, tb[OPT_GATEWAY], false))
+ goto out;
+ }
+
+ if (n_v6 && tb[OPT_IP6GW]) {
+ if (!parse_gateway_option(state, tb[OPT_IP6GW], true))
+ goto out;
+ }
+
+ return 0;
+
+error:
+ interface_add_error(state->iface, "proto-static", error, NULL, 0);
+out:
+ return -1;
+}
+
+static bool
+static_proto_setup(struct static_proto_state *state)
+{
+ return proto_apply_static_settings(&state->proto, state->config) == 0;
+}