interface-ip: set prefix indicator flag when IPv6 prefix lifetime changes
[project/netifd.git] / proto-static.c
index 4e7c052..3e33c3d 100644 (file)
@@ -1,3 +1,16 @@
+/*
+ * netifd - network interface daemon
+ * Copyright (C) 2012 Felix Fietkau <nbd@openwrt.org>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2
+ * as published by the Free Software Foundation
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
 #include <string.h>
 #include <stdlib.h>
 #include <stdio.h>
 
 #include "netifd.h"
 #include "interface.h"
+#include "interface-ip.h"
 #include "proto.h"
+#include "system.h"
 
-struct v4_addr {
-       struct in_addr addr;
-       unsigned int prefix;
-};
+struct static_proto_state {
+       struct interface_proto_state proto;
 
-struct v6_addr {
-       struct in6_addr addr;
-       unsigned int prefix;
+       struct blob_attr *config;
 };
 
-struct static_proto_state {
-    struct interface_proto_state proto;
-
-       int n_v4;
-       struct v4_addr *v4;
+static bool
+static_proto_setup(struct static_proto_state *state)
+{
+       struct interface *iface = state->proto.iface;
+       struct device *dev = iface->main_dev.dev;
 
-       int n_v6;
-       struct v4_addr *v6;
-};
+       interface_set_l3_dev(iface, dev);
+       return proto_apply_static_ip_settings(state->proto.iface, state->config) == 0;
+}
 
 static int
 static_handler(struct interface_proto_state *proto,
               enum interface_proto_cmd cmd, bool force)
 {
-       return 0;
-}
-
-static void
-static_free(struct interface_proto_state *proto)
-{
        struct static_proto_state *state;
+       int ret = 0;
 
        state = container_of(proto, struct static_proto_state, proto);
-       free(state);
-}
 
-struct interface_proto_state *
-static_create_state(struct v4_addr *v4, int n_v4, struct v6_addr *v6, int n_v6)
-{
-       struct static_proto_state *state;
-       int v4_len = sizeof(struct v4_addr) * n_v4;
-       int v6_len = sizeof(struct v6_addr) * n_v6;
-       void *next;
+       switch (cmd) {
+       case PROTO_CMD_SETUP:
+               if (!static_proto_setup(state))
+                       return -1;
 
-       state = calloc(1, sizeof(*state) + v4_len + v6_len);
-       state->proto.free = static_free;
-       state->proto.handler = static_handler;
-       state->proto.flags = PROTO_FLAG_IMMEDIATE;
-       next = (void *) state + 1;
-
-       if (n_v4) {
-               state->v4 = next;
-               memcpy(state->v4, v4, sizeof(*v4) * n_v4);
-               next = state->v4 + n_v4;
+               break;
+       case PROTO_CMD_TEARDOWN:
+       case PROTO_CMD_RENEW:
+               break;
        }
 
-       if (n_v6) {
-               state->v6 = next;
-               memcpy(state->v6, v6, sizeof(*v6) * n_v6);
-       }
-
-       return &state->proto;
-}
-
-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;
+       return ret;
 }
 
-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 int
-parse_v4(const char *str, struct v4_addr *v4, int netmask)
+static void
+static_free(struct interface_proto_state *proto)
 {
-       v4->prefix = netmask;
-       return parse_ip_and_netmask(AF_INET, str, &v4->addr, &v4->prefix);
-}
+       struct static_proto_state *state;
 
-static int
-parse_v6(const char *str, struct v6_addr *v6, int netmask)
-{
-       v6->prefix = netmask;
-       return parse_ip_and_netmask(AF_INET6, str, &v6->addr, &v6->prefix);
+       state = container_of(proto, struct static_proto_state, proto);
+       free(state->config);
+       free(state);
 }
 
-enum {
-       OPT_IPADDR,
-       OPT_IP6ADDR,
-       OPT_NETMASK,
-       OPT_GATEWAY,
-       OPT_DNS,
-       __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_DNS] = { .name = "dns" },
-};
-
-struct interface_proto_state *
-static_attach(struct proto_handler *h, struct interface *iface,
-             struct uci_section *s)
+static struct interface_proto_state *
+static_attach(const struct proto_handler *h, struct interface *iface,
+             struct blob_attr *attr)
 {
-       struct uci_option *tb[__OPT_MAX];
-       struct uci_element *e;
-       struct v4_addr *v4 = NULL;
-       struct v6_addr *v6 = NULL;
-       int n_v4 = 0, n_v6 = 0;
-       struct in_addr ina = {};
-       const char *error = NULL;
-       int netmask = 32;
-       int i;
-
-       uci_parse_section(s, 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]) {
-               if (tb[OPT_IPADDR]->type == UCI_TYPE_STRING) {
-                       n_v4 = 1;
-                       v4 = alloca(sizeof(*v4));
-                       if (!parse_v4(tb[OPT_IPADDR]->v.string, v4, netmask))
-                               goto invalid_addr;
-               } else {
-                       uci_foreach_element(&tb[OPT_IPADDR]->v.list, e)
-                               n_v4++;
-
-                       i = 0;
-                       v4 = alloca(sizeof(*v4) * n_v4);
-                       uci_foreach_element(&tb[OPT_IPADDR]->v.list, e) {
-                               if (!parse_v4(e->name, &v4[i++], netmask))
-                                       goto invalid_addr;
-                       }
-               }
-       }
-
-       if (tb[OPT_IP6ADDR]) {
-               if (tb[OPT_IP6ADDR]->type == UCI_TYPE_STRING) {
-                       n_v6 = 1;
-                       v6 = alloca(sizeof(*v6));
-                       v6->prefix = netmask;
-                       if (!parse_v6(tb[OPT_IP6ADDR]->v.string, v6, netmask))
-                               goto invalid_addr;
-               } else {
-                       uci_foreach_element(&tb[OPT_IP6ADDR]->v.list, e)
-                               n_v6++;
-
-                       i = 0;
-                       v6 = alloca(sizeof(*v6) * n_v6);
-                       uci_foreach_element(&tb[OPT_IP6ADDR]->v.list, e) {
-                               if (!parse_v6(e->name, &v6[i++], netmask))
-                                       goto invalid_addr;
-                       }
-               }
-       }
+       struct static_proto_state *state;
 
+       state = calloc(1, sizeof(*state));
+       if (!state)
+               return NULL;
 
-       if (!n_v4 && !n_v6) {
-               error = "NO_ADDRESS";
+       state->config = malloc(blob_pad_len(attr));
+       if (!state->config)
                goto error;
-       }
 
-       return static_create_state(v4, n_v4, v6, n_v6);
+       memcpy(state->config, attr, blob_pad_len(attr));
+       state->proto.free = static_free;
+       state->proto.cb = static_handler;
 
-invalid_addr:
-       error = "INVALID_ADDRESS";
+       return &state->proto;
 
 error:
-       interface_add_error(iface, "proto-static", error, NULL, 0);
+       free(state);
        return NULL;
 }
 
 static struct proto_handler static_proto = {
        .name = "static",
+       .flags = PROTO_FLAG_IMMEDIATE |
+                PROTO_FLAG_FORCE_LINK_DEFAULT,
+       .config_params = &proto_ip_attr,
        .attach = static_attach,
 };