interface-ip: set prefix indicator flag when IPv6 prefix lifetime changes
[project/netifd.git] / proto-static.c
index e57b63f..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 {
-       unsigned int prefix;
-       struct in_addr addr;
-};
-
-struct v6_addr {
-       unsigned int prefix;
-       struct in6_addr addr;
-};
-
-enum static_proto_flags {
-       STATIC_F_IPV4GW         = (1 << 0),
-       STATIC_F_IPV6GW         = (1 << 1),
-};
-
-struct static_proto_settings {
-       uint32_t flags;
-
-       int n_v4;
-       struct v4_addr *v4;
-
-       int n_v6;
-       struct v6_addr *v6;
+struct static_proto_state {
+       struct interface_proto_state proto;
 
-       struct in_addr ipv4gw;
-       struct in6_addr ipv6gw;
+       struct blob_attr *config;
 };
 
-struct static_proto_state {
-    struct interface_proto_state proto;
-       struct interface *iface;
+static bool
+static_proto_setup(struct static_proto_state *state)
+{
+       struct interface *iface = state->proto.iface;
+       struct device *dev = iface->main_dev.dev;
 
-       struct static_proto_settings s;
-};
+       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)
 {
        struct static_proto_state *state;
-       struct static_proto_settings *ps;
-       struct device *dev;
        int ret = 0;
-       int i;
 
        state = container_of(proto, struct static_proto_state, proto);
-       ps = &state->s;
-       dev = state->iface->main_dev.dev;
 
        switch (cmd) {
        case PROTO_CMD_SETUP:
-               for (i = 0; i < state->s.n_v4; i++) {
-                       if (ret)
-                               break;
-                       ret = system_add_address(dev, AF_INET,
-                               &ps->v4[i].addr, ps->v4[i].prefix);
-               }
-               for (i = 0; i < state->s.n_v6; i++) {
-                       if (ret)
-                               break;
-                       ret = system_add_address(dev, AF_INET6,
-                               &ps->v6[i].addr, ps->v6[i].prefix);
-               }
-
-               if (!ret)
-                       return 0;
-
-               interface_add_error(state->iface, "proto-static",
-                       "SET_ADDRESS_FAILED", NULL, 0);
-               /* fall through */
+               if (!static_proto_setup(state))
+                       return -1;
 
+               break;
        case PROTO_CMD_TEARDOWN:
-               for (i = 0; i < ps->n_v4; i++)
-                       system_del_address(dev, AF_INET, &ps->v4[i].addr);
-               for (i = 0; i < ps->n_v6; i++)
-                       system_del_address(dev, AF_INET6, &ps->v6[i].addr);
+       case PROTO_CMD_RENEW:
                break;
        }
+
        return ret;
 }
 
@@ -97,212 +69,40 @@ static_free(struct interface_proto_state *proto)
        struct static_proto_state *state;
 
        state = container_of(proto, struct static_proto_state, proto);
+       free(state->config);
        free(state);
 }
 
-struct interface_proto_state *
-static_create_state(struct interface *iface, struct static_proto_settings *ps)
+static struct interface_proto_state *
+static_attach(const struct proto_handler *h, struct interface *iface,
+             struct blob_attr *attr)
 {
        struct static_proto_state *state;
-       int v4_len = sizeof(struct v4_addr) * ps->n_v4;
-       int v6_len = sizeof(struct v6_addr) * ps->n_v6;
-       void *next;
-
-       state = calloc(1, sizeof(*state) + v4_len + v6_len);
-       state->iface = iface;
-       state->proto.free = static_free;
-       state->proto.handler = static_handler;
-       state->proto.flags = PROTO_FLAG_IMMEDIATE;
-       memcpy(&state->s, ps, sizeof(state->s));
 
-       next = (void *) (state + 1);
+       state = calloc(1, sizeof(*state));
+       if (!state)
+               return NULL;
 
-       if (ps->n_v4) {
-               ps->v4 = next;
-               memcpy(next, ps->v4, sizeof(struct v4_addr) * ps->n_v4);
-
-               next = ps->v4 + ps->n_v4;
-       }
-
-       if (ps->n_v6) {
-               ps->v6 = next;
-               memcpy(next, ps->v6, sizeof(struct v6_addr) * ps->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;
-}
-
-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)
-{
-       v4->prefix = netmask;
-       return parse_ip_and_netmask(AF_INET, str, &v4->addr, &v4->prefix);
-}
-
-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);
-}
-
-static int
-count_list_entries(struct uci_option *o)
-{
-       struct uci_element *e;
-       int n = 0;
-
-       uci_foreach_element(&o->v.list, e)
-               n++;
-
-       return n;
-}
-
-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 },
-};
-
-struct interface_proto_state *
-static_attach(struct proto_handler *h, struct interface *iface,
-             struct uci_section *s)
-{
-       struct uci_option *tb[__OPT_MAX];
-       struct uci_element *e;
-       struct in_addr ina = {};
-       const char *error = NULL;
-       int netmask = 32;
-       int i;
-       struct static_proto_settings ps;
-
-       memset(&ps, 0, sizeof(ps));
-       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) {
-                       ps.n_v4 = 1;
-                       ps.v4 = alloca(sizeof(struct v4_addr));
-                       if (!parse_v4(tb[OPT_IPADDR]->v.string, ps.v4, netmask))
-                               goto invalid_addr;
-               } else {
-                       i = 0;
-                       ps.n_v4 = count_list_entries(tb[OPT_IPADDR]);
-                       ps.v4 = alloca(sizeof(struct v4_addr) * ps.n_v4);
-                       uci_foreach_element(&tb[OPT_IPADDR]->v.list, e) {
-                               if (!parse_v4(e->name, &ps.v4[i++], netmask))
-                                       goto invalid_addr;
-                       }
-               }
-       }
-
-       if (tb[OPT_IP6ADDR]) {
-               if (tb[OPT_IP6ADDR]->type == UCI_TYPE_STRING) {
-                       ps.n_v6 = 1;
-                       ps.v6 = alloca(sizeof(struct v6_addr));
-                       ps.v6->prefix = netmask;
-                       if (!parse_v6(tb[OPT_IP6ADDR]->v.string, ps.v6, netmask))
-                               goto invalid_addr;
-               } else {
-                       i = 0;
-                       ps.n_v6 = count_list_entries(tb[OPT_IP6ADDR]);
-                       ps.v6 = alloca(sizeof(struct v6_addr) * ps.n_v6);
-                       uci_foreach_element(&tb[OPT_IP6ADDR]->v.list, e) {
-                               if (!parse_v6(e->name, &ps.v6[i++], netmask))
-                                       goto invalid_addr;
-                       }
-               }
-       }
-
-       if (!ps.n_v4 && !ps.n_v6) {
-               error = "NO_ADDRESS";
+       state->config = malloc(blob_pad_len(attr));
+       if (!state->config)
                goto error;
-       }
 
-       if (ps.n_v4 && tb[OPT_GATEWAY]) {
-               if (!inet_pton(AF_INET, tb[OPT_GATEWAY]->v.string, &ps.ipv4gw)) {
-                       error = "INVALID_GATEWAY";
-                       goto error;
-               }
-               ps.flags |= STATIC_F_IPV4GW;
-       }
-
-       if (ps.n_v6 && tb[OPT_IP6GW]) {
-               if (!inet_pton(AF_INET6, tb[OPT_IP6GW]->v.string, &ps.ipv6gw)) {
-                       error = "INVALID_GATEWAY";
-                       goto error;
-               }
-               ps.flags |= STATIC_F_IPV6GW;
-       }
-
-       return static_create_state(iface, &ps);
+       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,
 };