proto-static.c

   1 /*
   2  * netifd - network interface daemon
   3  * Copyright (C) 2012 Felix Fietkau <nbd@openwrt.org>
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License version 2
   7  * as published by the Free Software Foundation
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  */
  14 #include <string.h>
  15 #include <stdlib.h>
  16 #include <stdio.h>
  17
  18 #include <arpa/inet.h>
  19 #include <netinet/in.h>
  20
  21 #include "netifd.h"
  22 #include "interface.h"
  23 #include "interface-ip.h"
  24 #include "proto.h"
  25 #include "system.h"
  26
  27 struct static_proto_state {
  28         struct interface_proto_state proto;
  29
  30         struct blob_attr *config;
  31 };
  32
  33 static bool
  34 static_proto_setup(struct static_proto_state *state)
  35 {
  36         return proto_apply_static_ip_settings(state->proto.iface, state->config) == 0;
  37 }
  38
  39 static int
  40 static_handler(struct interface_proto_state *proto,
  41                enum interface_proto_cmd cmd, bool force)
  42 {
  43         struct static_proto_state *state;
  44         int ret = 0;
  45
  46         state = container_of(proto, struct static_proto_state, proto);
  47
  48         switch (cmd) {
  49         case PROTO_CMD_SETUP:
  50                 if (!static_proto_setup(state))
  51                         return -1;
  52
  53                 break;
  54         case PROTO_CMD_TEARDOWN:
  55                 break;
  56         }
  57         return ret;
  58 }
  59
  60 static void
  61 static_free(struct interface_proto_state *proto)
  62 {
  63         struct static_proto_state *state;
  64
  65         state = container_of(proto, struct static_proto_state, proto);
  66         free(state->config);
  67         free(state);
  68 }
  69
  70 static struct interface_proto_state *
  71 static_attach(const struct proto_handler *h, struct interface *iface,
  72               struct blob_attr *attr)
  73 {
  74         struct static_proto_state *state;
  75
  76         state = calloc(1, sizeof(*state));
  77         if (!state)
  78                 return NULL;
  79
  80         state->config = malloc(blob_pad_len(attr));
  81         if (!state->config)
  82                 goto error;
  83
  84         memcpy(state->config, attr, blob_pad_len(attr));
  85         state->proto.free = static_free;
  86         state->proto.cb = static_handler;
  87
  88         return &state->proto;
  89
  90 error:
  91         free(state);
  92         return NULL;
  93 }
  94
  95 static struct proto_handler static_proto = {
  96         .name = "static",
  97         .flags = PROTO_FLAG_IMMEDIATE,
  98         .config_params = &proto_ip_attr,
  99         .attach = static_attach,
 100 };
 101
 102 static void __init
 103 static_proto_init(void)
 104 {
 105         add_proto_handler(&static_proto);
 106 }