#include <stdlib.h>
#include <stdio.h>
+#include <arpa/inet.h>
+#include <netinet/in.h>
+
#include "netifd.h"
+#include "interface.h"
#include "proto.h"
+#include "system.h"
struct static_proto_state {
- struct interface_proto_state proto;
+ struct interface_proto_state proto;
+
+ struct uci_section *section;
+ struct interface *iface;
};
+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 static_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->ctx = state;
+ 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;
+ }
+ interface_add_address(state->iface, addr);
+ return true;
+}
+
+static int
+parse_address_option(struct static_proto_state *state, struct uci_option *o, bool v6, int netmask)
+{
+ struct uci_element *e;
+ int n_addr = 0;
+
+ if (o->type == UCI_TYPE_STRING) {
+ n_addr++;
+ if (!parse_addr(state, o->v.string, v6, netmask))
+ return -1;
+ } else {
+ uci_foreach_element(&o->v.list, e) {
+ n_addr++;
+ if (!parse_addr(state, e->name, v6, netmask))
+ return -1;
+ }
+ }
+
+ return n_addr;
+}
+
+static bool
+parse_gateway_option(struct static_proto_state *state, struct uci_option *o, bool v6)
+{
+ struct device_route *route;
+ const char *str = o->v.string;
+ 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);
+ interface_add_route(state->iface, route);
+
+ return true;
+}
+
+enum {
+ OPT_IPADDR,
+ OPT_IP6ADDR,
+ OPT_NETMASK,
+ OPT_GATEWAY,
+ OPT_IP6GW,
+ __OPT_MAX,
+};
+
+static const struct uci_parse_option opts[__OPT_MAX] = {
+ [OPT_IPADDR] = { .name = "ipaddr" },
+ [OPT_IP6ADDR] = { .name = "ip6addr" },
+ [OPT_NETMASK] = { .name = "netmask", .type = UCI_TYPE_STRING },
+ [OPT_GATEWAY] = { .name = "gateway", .type = UCI_TYPE_STRING },
+ [OPT_IP6GW] = { .name = "ip6gw", .type = UCI_TYPE_STRING },
+};
+
+static bool
+static_proto_setup(struct static_proto_state *state)
+{
+ struct uci_option *tb[__OPT_MAX];
+ struct in_addr ina;
+ const char *error;
+ int netmask = 32;
+ int n_v4 = 0, n_v6 = 0;
+
+ uci_parse_section(state->section, opts, __OPT_MAX, tb);
+
+ if (tb[OPT_NETMASK]) {
+ if (!inet_aton(tb[OPT_NETMASK]->v.string, &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 true;
+
+error:
+ interface_add_error(state->iface, "proto-static", error, NULL, 0);
+out:
+ return false;
+}
static int
static_handler(struct interface_proto_state *proto,
enum interface_proto_cmd cmd, bool force)
{
- return 0;
+ struct static_proto_state *state;
+ int ret = 0;
+
+ state = container_of(proto, struct static_proto_state, proto);
+
+ switch (cmd) {
+ case PROTO_CMD_SETUP:
+ if (static_proto_setup(state))
+ break;
+
+ /* fall through */
+ case PROTO_CMD_TEARDOWN:
+ interface_del_ctx_addr(state->iface, state);
+ break;
+ }
+ return ret;
}
static void
}
struct interface_proto_state *
-static_attach(struct proto_handler *h, struct interface *iface,
+static_attach(const struct proto_handler *h, struct interface *iface,
struct uci_section *s)
{
struct static_proto_state *state;
state = calloc(1, sizeof(*state));
+ state->iface = iface;
+ state->section = s;
state->proto.free = static_free;
state->proto.handler = static_handler;
state->proto.flags = PROTO_FLAG_IMMEDIATE;
projects / project / netifd.git / blobdiff