src/ipv4.c

   1 /*
   2  *
   3  *  Connection Manager
   4  *
   5  *  Copyright (C) 2007-2010  Intel Corporation. All rights reserved.
   6  *
   7  *  This program is free software; you can redistribute it and/or modify
   8  *  it under the terms of the GNU General Public License version 2 as
   9  *  published by the Free Software Foundation.
  10  *
  11  *  This program is distributed in the hope that it will be useful,
  12  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  *  GNU General Public License for more details.
  15  *
  16  *  You should have received a copy of the GNU General Public License
  17  *  along with this program; if not, write to the Free Software
  18  *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  19  *
  20  */
  21
  22 #ifdef HAVE_CONFIG_H
  23 #include <config.h>
  24 #endif
  25
  26 #include <unistd.h>
  27 #include <string.h>
  28 #include <sys/ioctl.h>
  29 #include <sys/socket.h>
  30 #include <netinet/in.h>
  31 #include <arpa/inet.h>
  32 #include <net/if.h>
  33 #include <asm/types.h>
  34 #include <linux/netlink.h>
  35 #include <linux/rtnetlink.h>
  36
  37 #include "connman.h"
  38
  39 static int ipv4_probe(struct connman_element *element)
  40 {
  41         struct connman_service *service;
  42         struct connman_ipconfig *ipconfig;
  43         struct connman_element *connection;
  44         const char *address = NULL, *netmask = NULL, *broadcast = NULL;
  45         const char *peer = NULL, *nameserver = NULL, *pac = NULL;
  46         char *timeserver = NULL;
  47         unsigned char prefixlen;
  48
  49         DBG("element %p name %s", element, element->name);
  50         connman_element_get_value(element,
  51                                 CONNMAN_PROPERTY_ID_IPV4_ADDRESS, &address);
  52         connman_element_get_value(element,
  53                                 CONNMAN_PROPERTY_ID_IPV4_NETMASK, &netmask);
  54         connman_element_get_value(element,
  55                                 CONNMAN_PROPERTY_ID_IPV4_BROADCAST, &broadcast);
  56         connman_element_get_value(element,
  57                                 CONNMAN_PROPERTY_ID_IPV4_PEER, &peer);
  58
  59         connman_element_get_value(element,
  60                         CONNMAN_PROPERTY_ID_IPV4_NAMESERVER, &nameserver);
  61         connman_element_get_value(element,
  62                         CONNMAN_PROPERTY_ID_IPV4_TIMESERVER, &timeserver);
  63         connman_element_get_value(element,
  64                         CONNMAN_PROPERTY_ID_IPV4_PAC, &pac);
  65
  66         DBG("address %s", address);
  67         DBG("peer %s", peer);
  68         DBG("netmask %s", netmask);
  69         DBG("broadcast %s", broadcast);
  70
  71         if (address == NULL)
  72                 return -EINVAL;
  73
  74         prefixlen = __connman_ipconfig_netmask_prefix_len(netmask);
  75
  76         if ((__connman_inet_modify_address(RTM_NEWADDR,
  77                         NLM_F_REPLACE | NLM_F_ACK, element->index,
  78                         AF_INET, address, peer, prefixlen, broadcast)) < 0)
  79                 DBG("address setting failed");
  80
  81         service = __connman_element_get_service(element);
  82
  83         if (pac != NULL)
  84                 __connman_service_set_proxy_autoconfig(service, pac);
  85
  86         if (nameserver != NULL)
  87                 __connman_service_append_nameserver(service, nameserver);
  88
  89         connman_timeserver_append(timeserver);
  90
  91         connection = connman_element_create(NULL);
  92
  93         connection->type    = CONNMAN_ELEMENT_TYPE_CONNECTION;
  94         connection->index   = element->index;
  95         connection->devname = connman_inet_ifname(element->index);
  96
  97         ipconfig = __connman_service_get_ip6config(service);
  98         if (ipconfig != NULL)
  99                 __connman_ipconfig_set_element_ipv6_gateway(
 100                                                 ipconfig, connection);
 101
 102         if (connman_element_register(connection, element) < 0)
 103                 connman_element_unref(connection);
 104
 105         return 0;
 106 }
 107
 108 static void ipv4_remove(struct connman_element *element)
 109 {
 110         const char *address = NULL, *netmask = NULL, *broadcast = NULL;
 111         const char *peer = NULL, *nameserver = NULL;
 112         char *timeserver = NULL;
 113         unsigned char prefixlen;
 114
 115         DBG("element %p name %s", element, element->name);
 116
 117         connman_element_get_value(element,
 118                                 CONNMAN_PROPERTY_ID_IPV4_ADDRESS, &address);
 119         connman_element_get_value(element,
 120                                 CONNMAN_PROPERTY_ID_IPV4_NETMASK, &netmask);
 121         connman_element_get_value(element,
 122                                 CONNMAN_PROPERTY_ID_IPV4_BROADCAST, &broadcast);
 123         connman_element_get_value(element,
 124                                 CONNMAN_PROPERTY_ID_IPV4_PEER, &peer);
 125
 126         connman_element_get_value(element,
 127                         CONNMAN_PROPERTY_ID_IPV4_NAMESERVER, &nameserver);
 128         connman_element_get_value(element,
 129                         CONNMAN_PROPERTY_ID_IPV4_TIMESERVER, &timeserver);
 130
 131         connman_timeserver_remove(timeserver);
 132
 133         DBG("address %s", address);
 134         DBG("peer %s", peer);
 135         DBG("netmask %s", netmask);
 136         DBG("broadcast %s", broadcast);
 137
 138         if (nameserver != NULL) {
 139                 struct connman_service *service;
 140
 141                 service = __connman_element_get_service(element);
 142                 __connman_service_remove_nameserver(service, nameserver);
 143         }
 144
 145         prefixlen = __connman_ipconfig_netmask_prefix_len(netmask);
 146
 147         if ((__connman_inet_modify_address(RTM_DELADDR, 0, element->index,
 148                         AF_INET, address, peer, prefixlen, broadcast) < 0))
 149                 DBG("address removal failed");
 150
 151         connman_element_unref(element);
 152 }
 153
 154 static struct connman_driver ipv4_driver = {
 155         .name           = "ipv4",
 156         .type           = CONNMAN_ELEMENT_TYPE_IPV4,
 157         .priority       = CONNMAN_DRIVER_PRIORITY_LOW,
 158         .probe          = ipv4_probe,
 159         .remove         = ipv4_remove,
 160 };
 161
 162 int __connman_ipv4_init(void)
 163 {
 164         return connman_driver_register(&ipv4_driver);
 165 }
 166
 167 void __connman_ipv4_cleanup(void)
 168 {
 169         connman_driver_unregister(&ipv4_driver);
 170 }