src/ipconfig.c

   1 /*
   2  *
   3  *  Connection Manager
   4  *
   5  *  Copyright (C) 2007-2009  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 <gdbus.h>
  27
  28 #include "connman.h"
  29
  30 struct connman_ipconfig {
  31         gint refcount;
  32         int index;
  33         char *interface;
  34         enum connman_ipconfig_method method;
  35 };
  36
  37 /**
  38  * connman_ipconfig_create:
  39  *
  40  * Allocate a new ipconfig structure.
  41  *
  42  * Returns: a newly-allocated #connman_ipconfig structure
  43  */
  44 struct connman_ipconfig *connman_ipconfig_create(const char *interface)
  45 {
  46         struct connman_ipconfig *ipconfig;
  47         int index;
  48
  49         DBG("");
  50
  51         index = connman_inet_ifindex(interface);
  52         if (index < 0)
  53                 return NULL;
  54
  55         ipconfig = g_try_new0(struct connman_ipconfig, 1);
  56         if (ipconfig == NULL)
  57                 return NULL;
  58
  59         ipconfig->index = index;
  60         ipconfig->interface = g_strdup(interface);
  61
  62         DBG("ipconfig %p", ipconfig);
  63
  64         __connman_rtnl_register_ipconfig(ipconfig);
  65
  66         return ipconfig;
  67 }
  68
  69 /**
  70  * connman_ipconfig_ref:
  71  * @ipconfig: ipconfig structure
  72  *
  73  * Increase reference counter of ipconfig
  74  */
  75 struct connman_ipconfig *connman_ipconfig_ref(struct connman_ipconfig *ipconfig)
  76 {
  77         g_atomic_int_inc(&ipconfig->refcount);
  78
  79         return ipconfig;
  80 }
  81
  82 /**
  83  * connman_ipconfig_unref:
  84  * @ipconfig: ipconfig structure
  85  *
  86  * Decrease reference counter of ipconfig
  87  */
  88 void connman_ipconfig_unref(struct connman_ipconfig *ipconfig)
  89 {
  90         if (g_atomic_int_dec_and_test(&ipconfig->refcount) == TRUE) {
  91                 __connman_rtnl_unregister_ipconfig(ipconfig);
  92
  93                 g_free(ipconfig->interface);
  94                 g_free(ipconfig);
  95         }
  96 }
  97
  98 /**
  99  * connman_ipconfig_set_method:
 100  * @ipconfig: ipconfig structure
 101  * @method: configuration method
 102  *
 103  * Set the configuration method
 104  */
 105 int connman_ipconfig_set_method(struct connman_ipconfig *ipconfig,
 106                                         enum connman_ipconfig_method method)
 107 {
 108         ipconfig->method = method;
 109
 110         return 0;
 111 }
 112
 113 int __connman_ipconfig_get_index(struct connman_ipconfig *ipconfig)
 114 {
 115         return ipconfig->index;
 116 }
 117
 118 void __connman_ipconfig_add_address(struct connman_ipconfig *ipconfig,
 119                                 const char *label, unsigned int prefixlen,
 120                                 const char *address, const char *broadcast)
 121 {
 122         connman_info("%s {add} address %s/%d label %s", ipconfig->interface,
 123                                                 address, prefixlen, label);
 124 }
 125
 126 void __connman_ipconfig_del_address(struct connman_ipconfig *ipconfig,
 127                                 const char *label, unsigned int prefixlen,
 128                                 const char *address, const char *broadcast)
 129 {
 130         connman_info("%s {del} address %s/%d label %s", ipconfig->interface,
 131                                                 address, prefixlen, label);
 132 }
 133
 134 const char *__connman_ipconfig_method2string(enum connman_ipconfig_method method)
 135 {
 136         switch (method) {
 137         case CONNMAN_IPCONFIG_METHOD_UNKNOWN:
 138                 break;
 139         case CONNMAN_IPCONFIG_METHOD_OFF:
 140                 return "off";
 141         case CONNMAN_IPCONFIG_METHOD_STATIC:
 142                 return "static";
 143         case CONNMAN_IPCONFIG_METHOD_DHCP:
 144                 return "dhcp";
 145         }
 146
 147         return NULL;
 148 }
 149
 150 enum connman_ipconfig_method __connman_ipconfig_string2method(const char *method)
 151 {
 152         if (g_strcmp0(method, "off") == 0)
 153                 return CONNMAN_IPCONFIG_METHOD_OFF;
 154         else if (g_strcmp0(method, "static") == 0)
 155                 return CONNMAN_IPCONFIG_METHOD_STATIC;
 156         else if (g_strcmp0(method, "dhcp") == 0)
 157                 return CONNMAN_IPCONFIG_METHOD_DHCP;
 158         else
 159                 return CONNMAN_IPCONFIG_METHOD_UNKNOWN;
 160 }
 161
 162 static void append_variant(DBusMessageIter *iter, const char *prefix,
 163                                         const char *key, int type, void *val)
 164 {
 165         char *str;
 166
 167         if (prefix == NULL) {
 168                 connman_dbus_dict_append_variant(iter, key, type, val);
 169                 return;
 170         }
 171
 172         str = g_strdup_printf("%s%s", prefix, key);
 173         if (str != NULL)
 174                 connman_dbus_dict_append_variant(iter, str, type, val);
 175
 176         g_free(str);
 177 }
 178
 179 void __connman_ipconfig_append_ipv4(struct connman_ipconfig *ipconfig,
 180                                 DBusMessageIter *iter, const char *prefix)
 181 {
 182         const char *str;
 183
 184         str = __connman_ipconfig_method2string(ipconfig->method);
 185         if (str == NULL)
 186                 return;
 187
 188         append_variant(iter, prefix, "Method", DBUS_TYPE_STRING, &str);
 189 }
 190
 191 int __connman_ipconfig_set_ipv4(struct connman_ipconfig *ipconfig,
 192                                 const char *key, DBusMessageIter *value)
 193 {
 194         int type = dbus_message_iter_get_arg_type(value);
 195
 196         DBG("ipconfig %p key %s type %d", ipconfig, key, type);
 197
 198         if (g_strcmp0(key, "Method") == 0) {
 199                 const char *method;
 200
 201                 if (type != DBUS_TYPE_STRING)
 202                         return -EINVAL;
 203
 204                 dbus_message_iter_get_basic(value, &method);
 205
 206                 ipconfig->method = __connman_ipconfig_string2method(method);
 207         } else
 208                 return -EINVAL;
 209
 210         return 0;
 211 }
 212
 213 int __connman_ipconfig_load(struct connman_ipconfig *ipconfig,
 214                 GKeyFile *keyfile, const char *identifier, const char *prefix)
 215 {
 216         DBG("ipconfig %p identifier %s", ipconfig, identifier);
 217
 218         return 0;
 219 }
 220
 221 int __connman_ipconfig_save(struct connman_ipconfig *ipconfig,
 222                 GKeyFile *keyfile, const char *identifier, const char *prefix)
 223 {
 224         DBG("ipconfig %p identifier %s", ipconfig, identifier);
 225
 226         return 0;
 227 }
 228
 229 static GSList *driver_list = NULL;
 230
 231 static gint compare_priority(gconstpointer a, gconstpointer b)
 232 {
 233         const struct connman_ipconfig_driver *driver1 = a;
 234         const struct connman_ipconfig_driver *driver2 = b;
 235
 236         return driver2->priority - driver1->priority;
 237 }
 238
 239 /**
 240  * connman_ipconfig_driver_register:
 241  * @driver: IP configuration driver
 242  *
 243  * Register a new IP configuration driver
 244  *
 245  * Returns: %0 on success
 246  */
 247 int connman_ipconfig_driver_register(struct connman_ipconfig_driver *driver)
 248 {
 249         DBG("driver %p name %s", driver, driver->name);
 250
 251         driver_list = g_slist_insert_sorted(driver_list, driver,
 252                                                         compare_priority);
 253
 254         return 0;
 255 }
 256
 257 /**
 258  * connman_ipconfig_driver_unregister:
 259  * @driver: IP configuration driver
 260  *
 261  * Remove a previously registered IP configuration driver.
 262  */
 263 void connman_ipconfig_driver_unregister(struct connman_ipconfig_driver *driver)
 264 {
 265         DBG("driver %p name %s", driver, driver->name);
 266
 267         driver_list = g_slist_remove(driver_list, driver);
 268 }