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
  58         return ret;
  59 }
  60
  61 static void
  62 static_free(struct interface_proto_state *proto)
  63 {
  64         struct static_proto_state *state;
  65
  66         state = container_of(proto, struct static_proto_state, proto);
  67         free(state->config);
  68         free(state);
  69 }
  70
  71 static struct interface_proto_state *
  72 static_attach(const struct proto_handler *h, struct interface *iface,
  73               struct blob_attr *attr)
  74 {
  75         struct static_proto_state *state;
  76
  77         state = calloc(1, sizeof(*state));
  78         if (!state)
  79                 return NULL;
  80
  81         state->config = malloc(blob_pad_len(attr));
  82         if (!state->config)
  83                 goto error;
  84
  85         memcpy(state->config, attr, blob_pad_len(attr));
  86         state->proto.free = static_free;
  87         state->proto.cb = static_handler;
  88
  89         return &state->proto;
  90
  91 error:
  92         free(state);
  93         return NULL;
  94 }
  95
  96 static struct proto_handler static_proto = {
  97         .name = "static",
  98         .flags = PROTO_FLAG_IMMEDIATE,
  99         .config_params = &proto_ip_attr,
 100         .attach = static_attach,
 101 };
 102
 103 static void __init
 104 static_proto_init(void)
 105 {
 106         add_proto_handler(&static_proto);
 107 }