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         enum connman_ipconfig_method method;
  33 };
  34
  35 /**
  36  * connman_ipconfig_create:
  37  *
  38  * Allocate a new ipconfig structure.
  39  *
  40  * Returns: a newly-allocated #connman_ipconfig structure
  41  */
  42 struct connman_ipconfig *connman_ipconfig_create(void)
  43 {
  44         struct connman_ipconfig *ipconfig;
  45
  46         DBG("");
  47
  48         ipconfig = g_try_new0(struct connman_ipconfig, 1);
  49         if (ipconfig == NULL)
  50                 return NULL;
  51
  52         DBG("ipconfig %p", ipconfig);
  53
  54         return ipconfig;
  55 }
  56
  57 /**
  58  * connman_ipconfig_ref:
  59  * @ipconfig: ipconfig structure
  60  *
  61  * Increase reference counter of ipconfig
  62  */
  63 struct connman_ipconfig *connman_ipconfig_ref(struct connman_ipconfig *ipconfig)
  64 {
  65         g_atomic_int_inc(&ipconfig->refcount);
  66
  67         return ipconfig;
  68 }
  69
  70 /**
  71  * connman_ipconfig_unref:
  72  * @ipconfig: ipconfig structure
  73  *
  74  * Decrease reference counter of ipconfig
  75  */
  76 void connman_ipconfig_unref(struct connman_ipconfig *ipconfig)
  77 {
  78         if (g_atomic_int_dec_and_test(&ipconfig->refcount) == TRUE) {
  79                 g_free(ipconfig);
  80         }
  81 }
  82
  83 const char *__connman_ipconfig_method2string(enum connman_ipconfig_method method)
  84 {
  85         switch (method) {
  86         case CONNMAN_IPCONFIG_METHOD_UNKNOWN:
  87                 return "unknown";
  88         case CONNMAN_IPCONFIG_METHOD_OFF:
  89                 return "off";
  90         case CONNMAN_IPCONFIG_METHOD_STATIC:
  91                 return "static";
  92         case CONNMAN_IPCONFIG_METHOD_DHCP:
  93                 return "dhcp";
  94         }
  95
  96         return "unknown";
  97 }
  98
  99 enum connman_ipconfig_method __connman_ipconfig_string2method(const char *method)
 100 {
 101         if (g_strcmp0(method, "off") == 0)
 102                 return CONNMAN_IPCONFIG_METHOD_OFF;
 103         else if (g_strcmp0(method, "static") == 0)
 104                 return CONNMAN_IPCONFIG_METHOD_STATIC;
 105         else if (g_strcmp0(method, "dhcp") == 0)
 106                 return CONNMAN_IPCONFIG_METHOD_DHCP;
 107         else
 108                 return CONNMAN_IPCONFIG_METHOD_UNKNOWN;
 109 }
 110
 111 static void append_variant(DBusMessageIter *iter, const char *prefix,
 112                                         const char *key, int type, void *val)
 113 {
 114         char *str;
 115
 116         if (prefix == NULL) {
 117                 connman_dbus_dict_append_variant(iter, key, type, val);
 118                 return;
 119         }
 120
 121         str = g_strdup_printf("%s%s", prefix, key);
 122         if (str != NULL)
 123                 connman_dbus_dict_append_variant(iter, str, type, val);
 124
 125         g_free(str);
 126 }
 127
 128 void __connman_ipconfig_append_ipv4(struct connman_ipconfig *ipconfig,
 129                                 DBusMessageIter *iter, const char *prefix)
 130 {
 131         const char *str;
 132
 133         str = __connman_ipconfig_method2string(ipconfig->method);
 134         if (str == NULL)
 135                 return;
 136
 137         append_variant(iter, prefix, "Method", DBUS_TYPE_STRING, &str);
 138 }
 139
 140 int __connman_ipconfig_set_ipv4(struct connman_ipconfig *ipconfig,
 141                                 const char *key, DBusMessageIter *value)
 142 {
 143         int type = dbus_message_iter_get_arg_type(value);
 144
 145         DBG("ipconfig %p key %s type %d", ipconfig, key, type);
 146
 147         if (g_strcmp0(key, "Method") == 0) {
 148                 const char *method;
 149
 150                 if (type != DBUS_TYPE_STRING)
 151                         return -EINVAL;
 152
 153                 dbus_message_iter_get_basic(value, &method);
 154
 155                 ipconfig->method = __connman_ipconfig_string2method(method);
 156         } else
 157                 return -EINVAL;
 158
 159         return 0;
 160 }
 161
 162 static GSList *driver_list = NULL;
 163
 164 static gint compare_priority(gconstpointer a, gconstpointer b)
 165 {
 166         const struct connman_ipconfig_driver *driver1 = a;
 167         const struct connman_ipconfig_driver *driver2 = b;
 168
 169         return driver2->priority - driver1->priority;
 170 }
 171
 172 /**
 173  * connman_ipconfig_driver_register:
 174  * @driver: IP configuration driver
 175  *
 176  * Register a new IP configuration driver
 177  *
 178  * Returns: %0 on success
 179  */
 180 int connman_ipconfig_driver_register(struct connman_ipconfig_driver *driver)
 181 {
 182         DBG("driver %p name %s", driver, driver->name);
 183
 184         driver_list = g_slist_insert_sorted(driver_list, driver,
 185                                                         compare_priority);
 186
 187         return 0;
 188 }
 189
 190 /**
 191  * connman_ipconfig_driver_unregister:
 192  * @driver: IP configuration driver
 193  *
 194  * Remove a previously registered IP configuration driver.
 195  */
 196 void connman_ipconfig_driver_unregister(struct connman_ipconfig_driver *driver)
 197 {
 198         DBG("driver %p name %s", driver, driver->name);
 199
 200         driver_list = g_slist_remove(driver_list, driver);
 201 }