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 <net/if.h>
  27
  28 #ifndef IFF_LOWER_UP
  29 #define IFF_LOWER_UP    0x10000
  30 #endif
  31
  32 #include <gdbus.h>
  33
  34 #include "connman.h"
  35
  36 struct connman_ipconfig {
  37         gint refcount;
  38         int index;
  39         char *interface;
  40         unsigned short type;
  41         unsigned int flags;
  42         enum connman_ipconfig_method method;
  43 };
  44
  45 /**
  46  * connman_ipconfig_create:
  47  *
  48  * Allocate a new ipconfig structure.
  49  *
  50  * Returns: a newly-allocated #connman_ipconfig structure
  51  */
  52 struct connman_ipconfig *connman_ipconfig_create(int index)
  53 {
  54         struct connman_ipconfig *ipconfig;
  55
  56         DBG("");
  57
  58         ipconfig = g_try_new0(struct connman_ipconfig, 1);
  59         if (ipconfig == NULL)
  60                 return NULL;
  61
  62         ipconfig->refcount = 1;
  63
  64         ipconfig->index = index;
  65         ipconfig->interface = connman_inet_ifname(index);
  66
  67         DBG("ipconfig %p", ipconfig);
  68
  69         connman_info("%s {create} index %d", ipconfig->interface,
  70                                                         ipconfig->index);
  71
  72         return ipconfig;
  73 }
  74
  75 /**
  76  * connman_ipconfig_ref:
  77  * @ipconfig: ipconfig structure
  78  *
  79  * Increase reference counter of ipconfig
  80  */
  81 struct connman_ipconfig *connman_ipconfig_ref(struct connman_ipconfig *ipconfig)
  82 {
  83         g_atomic_int_inc(&ipconfig->refcount);
  84
  85         return ipconfig;
  86 }
  87
  88 /**
  89  * connman_ipconfig_unref:
  90  * @ipconfig: ipconfig structure
  91  *
  92  * Decrease reference counter of ipconfig
  93  */
  94 void connman_ipconfig_unref(struct connman_ipconfig *ipconfig)
  95 {
  96         if (g_atomic_int_dec_and_test(&ipconfig->refcount) == TRUE) {
  97                 connman_info("%s {remove} index %d", ipconfig->interface,
  98                                                         ipconfig->index);
  99
 100                 g_free(ipconfig->interface);
 101                 g_free(ipconfig);
 102         }
 103 }
 104
 105 /**
 106  * connman_ipconfig_set_method:
 107  * @ipconfig: ipconfig structure
 108  * @method: configuration method
 109  *
 110  * Set the configuration method
 111  */
 112 int connman_ipconfig_set_method(struct connman_ipconfig *ipconfig,
 113                                         enum connman_ipconfig_method method)
 114 {
 115         ipconfig->method = method;
 116
 117         return 0;
 118 }
 119
 120 int __connman_ipconfig_get_index(struct connman_ipconfig *ipconfig)
 121 {
 122         return ipconfig->index;
 123 }
 124
 125 unsigned short __connman_ipconfig_get_type(struct connman_ipconfig *ipconfig)
 126 {
 127         return ipconfig->type;
 128 }
 129
 130 unsigned int __connman_ipconfig_get_flags(struct connman_ipconfig *ipconfig)
 131 {
 132         return ipconfig->flags;
 133 }
 134
 135 void __connman_ipconfig_update_link(struct connman_ipconfig *ipconfig,
 136                                         unsigned flags, unsigned change)
 137 {
 138         GString *str;
 139
 140         if (flags == ipconfig->flags)
 141                 return;
 142
 143         ipconfig->flags = flags;
 144
 145         str = g_string_new(NULL);
 146         if (str == NULL)
 147                 return;
 148
 149         if (flags & IFF_UP)
 150                 g_string_append(str, "UP");
 151         else
 152                 g_string_append(str, "DOWN");
 153
 154         if (flags & IFF_RUNNING)
 155                 g_string_append(str, ",RUNNING");
 156
 157         if (flags & IFF_LOWER_UP)
 158                 g_string_append(str, ",LOWER_UP");
 159
 160         connman_info("%s {update} flags %u change %u <%s>",
 161                                 ipconfig->interface, flags, change, str->str);
 162
 163         g_string_free(str, TRUE);
 164 }
 165
 166 void __connman_ipconfig_add_address(struct connman_ipconfig *ipconfig,
 167                                 const char *label, unsigned char prefixlen,
 168                                 const char *address, const char *broadcast)
 169 {
 170         connman_info("%s {add} address %s/%u label %s", ipconfig->interface,
 171                                                 address, prefixlen, label);
 172 }
 173
 174 void __connman_ipconfig_del_address(struct connman_ipconfig *ipconfig,
 175                                 const char *label, unsigned char prefixlen,
 176                                 const char *address, const char *broadcast)
 177 {
 178         connman_info("%s {del} address %s/%u label %s", ipconfig->interface,
 179                                                 address, prefixlen, label);
 180 }
 181
 182 const char *__connman_ipconfig_method2string(enum connman_ipconfig_method method)
 183 {
 184         switch (method) {
 185         case CONNMAN_IPCONFIG_METHOD_UNKNOWN:
 186                 break;
 187         case CONNMAN_IPCONFIG_METHOD_OFF:
 188                 return "off";
 189         case CONNMAN_IPCONFIG_METHOD_STATIC:
 190                 return "static";
 191         case CONNMAN_IPCONFIG_METHOD_DHCP:
 192                 return "dhcp";
 193         }
 194
 195         return NULL;
 196 }
 197
 198 enum connman_ipconfig_method __connman_ipconfig_string2method(const char *method)
 199 {
 200         if (g_strcmp0(method, "off") == 0)
 201                 return CONNMAN_IPCONFIG_METHOD_OFF;
 202         else if (g_strcmp0(method, "static") == 0)
 203                 return CONNMAN_IPCONFIG_METHOD_STATIC;
 204         else if (g_strcmp0(method, "dhcp") == 0)
 205                 return CONNMAN_IPCONFIG_METHOD_DHCP;
 206         else
 207                 return CONNMAN_IPCONFIG_METHOD_UNKNOWN;
 208 }
 209
 210 static void append_variant(DBusMessageIter *iter, const char *prefix,
 211                                         const char *key, int type, void *val)
 212 {
 213         char *str;
 214
 215         if (prefix == NULL) {
 216                 connman_dbus_dict_append_variant(iter, key, type, val);
 217                 return;
 218         }
 219
 220         str = g_strdup_printf("%s%s", prefix, key);
 221         if (str != NULL)
 222                 connman_dbus_dict_append_variant(iter, str, type, val);
 223
 224         g_free(str);
 225 }
 226
 227 void __connman_ipconfig_append_ipv4(struct connman_ipconfig *ipconfig,
 228                                 DBusMessageIter *iter, const char *prefix)
 229 {
 230         const char *str;
 231
 232         str = __connman_ipconfig_method2string(ipconfig->method);
 233         if (str == NULL)
 234                 return;
 235
 236         append_variant(iter, prefix, "Method", DBUS_TYPE_STRING, &str);
 237 }
 238
 239 int __connman_ipconfig_set_ipv4(struct connman_ipconfig *ipconfig,
 240                                 const char *key, DBusMessageIter *value)
 241 {
 242         int type = dbus_message_iter_get_arg_type(value);
 243
 244         DBG("ipconfig %p key %s type %d", ipconfig, key, type);
 245
 246         if (g_strcmp0(key, "Method") == 0) {
 247                 const char *method;
 248
 249                 if (type != DBUS_TYPE_STRING)
 250                         return -EINVAL;
 251
 252                 dbus_message_iter_get_basic(value, &method);
 253
 254                 ipconfig->method = __connman_ipconfig_string2method(method);
 255         } else
 256                 return -EINVAL;
 257
 258         return 0;
 259 }
 260
 261 int __connman_ipconfig_load(struct connman_ipconfig *ipconfig,
 262                 GKeyFile *keyfile, const char *identifier, const char *prefix)
 263 {
 264         DBG("ipconfig %p identifier %s", ipconfig, identifier);
 265
 266         return 0;
 267 }
 268
 269 int __connman_ipconfig_save(struct connman_ipconfig *ipconfig,
 270                 GKeyFile *keyfile, const char *identifier, const char *prefix)
 271 {
 272         DBG("ipconfig %p identifier %s", ipconfig, identifier);
 273
 274         return 0;
 275 }
 276
 277 static GSList *driver_list = NULL;
 278
 279 static gint compare_priority(gconstpointer a, gconstpointer b)
 280 {
 281         const struct connman_ipconfig_driver *driver1 = a;
 282         const struct connman_ipconfig_driver *driver2 = b;
 283
 284         return driver2->priority - driver1->priority;
 285 }
 286
 287 /**
 288  * connman_ipconfig_driver_register:
 289  * @driver: IP configuration driver
 290  *
 291  * Register a new IP configuration driver
 292  *
 293  * Returns: %0 on success
 294  */
 295 int connman_ipconfig_driver_register(struct connman_ipconfig_driver *driver)
 296 {
 297         DBG("driver %p name %s", driver, driver->name);
 298
 299         driver_list = g_slist_insert_sorted(driver_list, driver,
 300                                                         compare_priority);
 301
 302         return 0;
 303 }
 304
 305 /**
 306  * connman_ipconfig_driver_unregister:
 307  * @driver: IP configuration driver
 308  *
 309  * Remove a previously registered IP configuration driver.
 310  */
 311 void connman_ipconfig_driver_unregister(struct connman_ipconfig_driver *driver)
 312 {
 313         DBG("driver %p name %s", driver, driver->name);
 314
 315         driver_list = g_slist_remove(driver_list, driver);
 316 }