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_ipaddress {
  37         unsigned char prefixlen;
  38         char *address;
  39 };
  40
  41 struct connman_ipconfig {
  42         gint refcount;
  43         int index;
  44         char *interface;
  45         unsigned short type;
  46         unsigned int flags;
  47         enum connman_ipconfig_method method;
  48         GSList *address_list;
  49 };
  50
  51 static void free_address_list(struct connman_ipconfig *ipconfig)
  52 {
  53         GSList *list;
  54
  55         for (list = ipconfig->address_list; list; list = list->next) {
  56                 struct connman_ipaddress *ipaddress = list->data;
  57
  58                 g_free(ipaddress->address);
  59                 g_free(ipaddress);
  60         }
  61
  62         g_slist_free(ipconfig->address_list);
  63         ipconfig->address_list = NULL;
  64 }
  65
  66 static struct connman_ipaddress *find_ipaddress(struct connman_ipconfig *ipconfig,
  67                                 unsigned char prefixlen, const char *address)
  68 {
  69         GSList *list;
  70
  71         for (list = ipconfig->address_list; list; list = list->next) {
  72                 struct connman_ipaddress *ipaddress = list->data;
  73
  74                 if (g_strcmp0(ipaddress->address, address) == 0 &&
  75                                         ipaddress->prefixlen == prefixlen)
  76                         return ipaddress;
  77         }
  78
  79         return NULL;
  80 }
  81
  82 /**
  83  * connman_ipconfig_create:
  84  *
  85  * Allocate a new ipconfig structure.
  86  *
  87  * Returns: a newly-allocated #connman_ipconfig structure
  88  */
  89 struct connman_ipconfig *connman_ipconfig_create(int index)
  90 {
  91         struct connman_ipconfig *ipconfig;
  92
  93         DBG("");
  94
  95         ipconfig = g_try_new0(struct connman_ipconfig, 1);
  96         if (ipconfig == NULL)
  97                 return NULL;
  98
  99         ipconfig->refcount = 1;
 100
 101         ipconfig->index = index;
 102         ipconfig->interface = connman_inet_ifname(index);
 103
 104         DBG("ipconfig %p", ipconfig);
 105
 106         connman_info("%s {create} index %d", ipconfig->interface,
 107                                                         ipconfig->index);
 108
 109         return ipconfig;
 110 }
 111
 112 /**
 113  * connman_ipconfig_ref:
 114  * @ipconfig: ipconfig structure
 115  *
 116  * Increase reference counter of ipconfig
 117  */
 118 struct connman_ipconfig *connman_ipconfig_ref(struct connman_ipconfig *ipconfig)
 119 {
 120         g_atomic_int_inc(&ipconfig->refcount);
 121
 122         return ipconfig;
 123 }
 124
 125 /**
 126  * connman_ipconfig_unref:
 127  * @ipconfig: ipconfig structure
 128  *
 129  * Decrease reference counter of ipconfig
 130  */
 131 void connman_ipconfig_unref(struct connman_ipconfig *ipconfig)
 132 {
 133         if (g_atomic_int_dec_and_test(&ipconfig->refcount) == TRUE) {
 134                 connman_info("%s {remove} index %d", ipconfig->interface,
 135                                                         ipconfig->index);
 136
 137                 free_address_list(ipconfig);
 138
 139                 g_free(ipconfig->interface);
 140                 g_free(ipconfig);
 141         }
 142 }
 143
 144 /**
 145  * connman_ipconfig_set_method:
 146  * @ipconfig: ipconfig structure
 147  * @method: configuration method
 148  *
 149  * Set the configuration method
 150  */
 151 int connman_ipconfig_set_method(struct connman_ipconfig *ipconfig,
 152                                         enum connman_ipconfig_method method)
 153 {
 154         ipconfig->method = method;
 155
 156         return 0;
 157 }
 158
 159 int __connman_ipconfig_get_index(struct connman_ipconfig *ipconfig)
 160 {
 161         return ipconfig->index;
 162 }
 163
 164 unsigned short __connman_ipconfig_get_type(struct connman_ipconfig *ipconfig)
 165 {
 166         return ipconfig->type;
 167 }
 168
 169 unsigned int __connman_ipconfig_get_flags(struct connman_ipconfig *ipconfig)
 170 {
 171         return ipconfig->flags;
 172 }
 173
 174 void __connman_ipconfig_update_link(struct connman_ipconfig *ipconfig,
 175                                         unsigned flags, unsigned change)
 176 {
 177         GString *str;
 178
 179         if (flags == ipconfig->flags)
 180                 return;
 181
 182         ipconfig->flags = flags;
 183
 184         str = g_string_new(NULL);
 185         if (str == NULL)
 186                 return;
 187
 188         if (flags & IFF_UP)
 189                 g_string_append(str, "UP");
 190         else
 191                 g_string_append(str, "DOWN");
 192
 193         if (flags & IFF_RUNNING)
 194                 g_string_append(str, ",RUNNING");
 195
 196         if (flags & IFF_LOWER_UP)
 197                 g_string_append(str, ",LOWER_UP");
 198
 199         connman_info("%s {update} flags %u change %u <%s>",
 200                                 ipconfig->interface, flags, change, str->str);
 201
 202         g_string_free(str, TRUE);
 203 }
 204
 205 void __connman_ipconfig_add_address(struct connman_ipconfig *ipconfig,
 206                                 const char *label, unsigned char prefixlen,
 207                                 const char *address, const char *broadcast)
 208 {
 209         struct connman_ipaddress *ipaddress;
 210
 211         ipaddress = g_try_new0(struct connman_ipaddress, 1);
 212         if (ipaddress == NULL)
 213                 return;
 214
 215         ipaddress->prefixlen = prefixlen;
 216         ipaddress->address = g_strdup(address);
 217
 218         ipconfig->address_list = g_slist_append(ipconfig->address_list,
 219                                                                 ipaddress);
 220
 221         connman_info("%s {add} address %s/%u label %s", ipconfig->interface,
 222                                                 address, prefixlen, label);
 223 }
 224
 225 void __connman_ipconfig_del_address(struct connman_ipconfig *ipconfig,
 226                                 const char *label, unsigned char prefixlen,
 227                                 const char *address, const char *broadcast)
 228 {
 229         struct connman_ipaddress *ipaddress;
 230
 231         ipaddress = find_ipaddress(ipconfig, prefixlen, address);
 232         if (ipaddress == NULL)
 233                 return;
 234
 235         ipconfig->address_list = g_slist_remove(ipconfig->address_list,
 236                                                                 ipaddress);
 237
 238         g_free(ipaddress->address);
 239         g_free(ipaddress);
 240
 241         connman_info("%s {del} address %s/%u label %s", ipconfig->interface,
 242                                                 address, prefixlen, label);
 243 }
 244
 245 static const char *scope2str(unsigned char scope)
 246 {
 247         switch (scope) {
 248         case 0:
 249                 return "UNIVERSE";
 250         case 253:
 251                 return "LINK";
 252         }
 253
 254         return "";
 255 }
 256
 257 void __connman_ipconfig_add_route(struct connman_ipconfig *ipconfig,
 258                                 unsigned char scope, const char *destination,
 259                                                         const char *gateway)
 260 {
 261         connman_info("%s {add} route %s gw %s scope %u <%s>",
 262                                         ipconfig->interface, destination,
 263                                         gateway, scope, scope2str(scope));
 264 }
 265
 266 void __connman_ipconfig_del_route(struct connman_ipconfig *ipconfig,
 267                                 unsigned char scope, const char *destination,
 268                                                         const char *gateway)
 269 {
 270         connman_info("%s {del} route %s gw %s scope %u <%s>",
 271                                         ipconfig->interface, destination,
 272                                         gateway, scope, scope2str(scope));
 273 }
 274
 275 const char *__connman_ipconfig_method2string(enum connman_ipconfig_method method)
 276 {
 277         switch (method) {
 278         case CONNMAN_IPCONFIG_METHOD_UNKNOWN:
 279                 break;
 280         case CONNMAN_IPCONFIG_METHOD_OFF:
 281                 return "off";
 282         case CONNMAN_IPCONFIG_METHOD_STATIC:
 283                 return "static";
 284         case CONNMAN_IPCONFIG_METHOD_DHCP:
 285                 return "dhcp";
 286         }
 287
 288         return NULL;
 289 }
 290
 291 enum connman_ipconfig_method __connman_ipconfig_string2method(const char *method)
 292 {
 293         if (g_strcmp0(method, "off") == 0)
 294                 return CONNMAN_IPCONFIG_METHOD_OFF;
 295         else if (g_strcmp0(method, "static") == 0)
 296                 return CONNMAN_IPCONFIG_METHOD_STATIC;
 297         else if (g_strcmp0(method, "dhcp") == 0)
 298                 return CONNMAN_IPCONFIG_METHOD_DHCP;
 299         else
 300                 return CONNMAN_IPCONFIG_METHOD_UNKNOWN;
 301 }
 302
 303 static void append_variant(DBusMessageIter *iter, const char *prefix,
 304                                         const char *key, int type, void *val)
 305 {
 306         char *str;
 307
 308         if (prefix == NULL) {
 309                 connman_dbus_dict_append_variant(iter, key, type, val);
 310                 return;
 311         }
 312
 313         str = g_strdup_printf("%s%s", prefix, key);
 314         if (str != NULL)
 315                 connman_dbus_dict_append_variant(iter, str, type, val);
 316
 317         g_free(str);
 318 }
 319
 320 void __connman_ipconfig_append_ipv4(struct connman_ipconfig *ipconfig,
 321                                 DBusMessageIter *iter, const char *prefix)
 322 {
 323         const char *str;
 324
 325         str = __connman_ipconfig_method2string(ipconfig->method);
 326         if (str == NULL)
 327                 return;
 328
 329         append_variant(iter, prefix, "Method", DBUS_TYPE_STRING, &str);
 330 }
 331
 332 int __connman_ipconfig_set_ipv4(struct connman_ipconfig *ipconfig,
 333                                 const char *key, DBusMessageIter *value)
 334 {
 335         int type = dbus_message_iter_get_arg_type(value);
 336
 337         DBG("ipconfig %p key %s type %d", ipconfig, key, type);
 338
 339         if (g_strcmp0(key, "Method") == 0) {
 340                 const char *method;
 341
 342                 if (type != DBUS_TYPE_STRING)
 343                         return -EINVAL;
 344
 345                 dbus_message_iter_get_basic(value, &method);
 346
 347                 ipconfig->method = __connman_ipconfig_string2method(method);
 348         } else
 349                 return -EINVAL;
 350
 351         return 0;
 352 }
 353
 354 int __connman_ipconfig_load(struct connman_ipconfig *ipconfig,
 355                 GKeyFile *keyfile, const char *identifier, const char *prefix)
 356 {
 357         DBG("ipconfig %p identifier %s", ipconfig, identifier);
 358
 359         return 0;
 360 }
 361
 362 int __connman_ipconfig_save(struct connman_ipconfig *ipconfig,
 363                 GKeyFile *keyfile, const char *identifier, const char *prefix)
 364 {
 365         DBG("ipconfig %p identifier %s", ipconfig, identifier);
 366
 367         return 0;
 368 }
 369
 370 static GSList *driver_list = NULL;
 371
 372 static gint compare_priority(gconstpointer a, gconstpointer b)
 373 {
 374         const struct connman_ipconfig_driver *driver1 = a;
 375         const struct connman_ipconfig_driver *driver2 = b;
 376
 377         return driver2->priority - driver1->priority;
 378 }
 379
 380 /**
 381  * connman_ipconfig_driver_register:
 382  * @driver: IP configuration driver
 383  *
 384  * Register a new IP configuration driver
 385  *
 386  * Returns: %0 on success
 387  */
 388 int connman_ipconfig_driver_register(struct connman_ipconfig_driver *driver)
 389 {
 390         DBG("driver %p name %s", driver, driver->name);
 391
 392         driver_list = g_slist_insert_sorted(driver_list, driver,
 393                                                         compare_priority);
 394
 395         return 0;
 396 }
 397
 398 /**
 399  * connman_ipconfig_driver_unregister:
 400  * @driver: IP configuration driver
 401  *
 402  * Remove a previously registered IP configuration driver.
 403  */
 404 void connman_ipconfig_driver_unregister(struct connman_ipconfig_driver *driver)
 405 {
 406         DBG("driver %p name %s", driver, driver->name);
 407
 408         driver_list = g_slist_remove(driver_list, driver);
 409 }