src/rtnl.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 <stdio.h>
  27 #include <unistd.h>
  28 #include <string.h>
  29 #include <sys/socket.h>
  30 #include <sys/ioctl.h>
  31 #include <arpa/inet.h>
  32 #include <netinet/ether.h>
  33 #include <netinet/icmp6.h>
  34 #include <net/if_arp.h>
  35 #include <linux/if.h>
  36 #include <linux/netlink.h>
  37 #include <linux/rtnetlink.h>
  38 #include <linux/wireless.h>
  39
  40 #include <glib.h>
  41
  42 #include "connman.h"
  43
  44 #ifndef ARPHDR_PHONET_PIPE
  45 #define ARPHDR_PHONET_PIPE (821)
  46 #endif
  47
  48 #define print(arg...) do { } while (0)
  49 //#define print(arg...) connman_info(arg)
  50
  51 struct watch_data {
  52         unsigned int id;
  53         int index;
  54         connman_rtnl_link_cb_t newlink;
  55         void *user_data;
  56 };
  57
  58 static GSList *watch_list = NULL;
  59 static unsigned int watch_id = 0;
  60
  61 static GSList *update_list = NULL;
  62 static guint update_interval = G_MAXUINT;
  63 static guint update_timeout = 0;
  64
  65 struct interface_data {
  66         int index;
  67         char *name;
  68         char *ident;
  69         enum connman_service_type service_type;
  70         enum connman_device_type device_type;
  71 };
  72
  73 static GHashTable *interface_list = NULL;
  74
  75 static void free_interface(gpointer data)
  76 {
  77         struct interface_data *interface = data;
  78
  79         __connman_technology_remove_interface(interface->service_type,
  80                         interface->index, interface->name, interface->ident);
  81
  82         g_free(interface->ident);
  83         g_free(interface->name);
  84         g_free(interface);
  85 }
  86
  87 static connman_bool_t ether_blacklisted(const char *name)
  88 {
  89         if (name == NULL)
  90                 return TRUE;
  91
  92         /* virtual interface from VMware */
  93         if (g_str_has_prefix(name, "vmnet") == TRUE)
  94                 return TRUE;
  95
  96         /* virtual interface from VirtualBox */
  97         if (g_str_has_prefix(name, "vboxnet") == TRUE)
  98                 return TRUE;
  99
 100         /* virtual interface from Virtual Machine Manager */
 101         if (g_str_has_prefix(name, "virbr") == TRUE)
 102                 return TRUE;
 103
 104         return FALSE;
 105 }
 106
 107 static connman_bool_t wext_interface(char *ifname)
 108 {
 109         struct iwreq wrq;
 110         int fd, err;
 111
 112         fd = socket(PF_INET, SOCK_DGRAM, 0);
 113         if (fd < 0)
 114                 return FALSE;
 115
 116         memset(&wrq, 0, sizeof(wrq));
 117         strncpy(wrq.ifr_name, ifname, IFNAMSIZ);
 118
 119         err = ioctl(fd, SIOCGIWNAME, &wrq);
 120
 121         close(fd);
 122
 123         if (err < 0)
 124                 return FALSE;
 125
 126         return TRUE;
 127 }
 128
 129 static void read_uevent(struct interface_data *interface)
 130 {
 131         char *filename, line[128];
 132         connman_bool_t found_devtype;
 133         FILE *f;
 134
 135         if (ether_blacklisted(interface->name) == TRUE) {
 136                 interface->service_type = CONNMAN_SERVICE_TYPE_UNKNOWN;
 137                 interface->device_type = CONNMAN_DEVICE_TYPE_UNKNOWN;
 138         } else {
 139                 interface->service_type = CONNMAN_SERVICE_TYPE_ETHERNET;
 140                 interface->device_type = CONNMAN_DEVICE_TYPE_ETHERNET;
 141         }
 142
 143         filename = g_strdup_printf("/sys/class/net/%s/uevent",
 144                                                 interface->name);
 145
 146         f = fopen(filename, "re");
 147
 148         g_free(filename);
 149
 150         if (f == NULL)
 151                 return;
 152
 153         found_devtype = FALSE;
 154         while (fgets(line, sizeof(line), f)) {
 155                 char *pos;
 156
 157                 pos = strchr(line, '\n');
 158                 if (pos == NULL)
 159                         continue;
 160                 pos[0] = '\0';
 161
 162                 if (strncmp(line, "DEVTYPE=", 8) != 0)
 163                         continue;
 164
 165                 found_devtype = TRUE;
 166
 167                 if (strcmp(line + 8, "wlan") == 0) {
 168                         interface->service_type = CONNMAN_SERVICE_TYPE_WIFI;
 169                         interface->device_type = CONNMAN_DEVICE_TYPE_WIFI;
 170                 } else if (strcmp(line + 8, "wwan") == 0) {
 171                         interface->service_type = CONNMAN_SERVICE_TYPE_CELLULAR;
 172                         interface->device_type = CONNMAN_DEVICE_TYPE_CELLULAR;
 173                 } else if (strcmp(line + 8, "bluetooth") == 0) {
 174                         interface->service_type = CONNMAN_SERVICE_TYPE_BLUETOOTH;
 175                         interface->device_type = CONNMAN_DEVICE_TYPE_BLUETOOTH;
 176                 } else if (strcmp(line + 8, "wimax") == 0) {
 177                         interface->service_type = CONNMAN_SERVICE_TYPE_WIMAX;
 178                         interface->device_type = CONNMAN_DEVICE_TYPE_WIMAX;
 179                 } else if (strcmp(line + 8, "gadget") == 0) {
 180                         interface->service_type = CONNMAN_SERVICE_TYPE_GADGET;
 181                         interface->device_type = CONNMAN_DEVICE_TYPE_GADGET;
 182
 183                 } else {
 184                         interface->service_type = CONNMAN_SERVICE_TYPE_UNKNOWN;
 185                         interface->device_type = CONNMAN_DEVICE_TYPE_UNKNOWN;
 186                 }
 187         }
 188
 189         fclose(f);
 190
 191         if (found_devtype)
 192                 return;
 193
 194         /* We haven't got a DEVTYPE, let's check if it's a wireless device */
 195         if (wext_interface(interface->name)) {
 196                 interface->service_type = CONNMAN_SERVICE_TYPE_WIFI;
 197                 interface->device_type = CONNMAN_DEVICE_TYPE_WIFI;
 198
 199                 connman_error("%s runs an unsupported 802.11 driver",
 200                                 interface->name);
 201         }
 202 }
 203
 204 enum connman_device_type __connman_rtnl_get_device_type(int index)
 205 {
 206         struct interface_data *interface;
 207
 208         interface = g_hash_table_lookup(interface_list,
 209                                         GINT_TO_POINTER(index));
 210         if (interface == NULL)
 211                 return CONNMAN_DEVICE_TYPE_UNKNOWN;
 212
 213         return interface->device_type;
 214 }
 215
 216 /**
 217  * connman_rtnl_add_newlink_watch:
 218  * @index: network device index
 219  * @callback: callback function
 220  * @user_data: callback data;
 221  *
 222  * Add a new RTNL watch for newlink events
 223  *
 224  * Returns: %0 on failure and a unique id on success
 225  */
 226 unsigned int connman_rtnl_add_newlink_watch(int index,
 227                         connman_rtnl_link_cb_t callback, void *user_data)
 228 {
 229         struct watch_data *watch;
 230
 231         watch = g_try_new0(struct watch_data, 1);
 232         if (watch == NULL)
 233                 return 0;
 234
 235         watch->id = ++watch_id;
 236         watch->index = index;
 237
 238         watch->newlink = callback;
 239         watch->user_data = user_data;
 240
 241         watch_list = g_slist_prepend(watch_list, watch);
 242
 243         DBG("id %d", watch->id);
 244
 245         if (callback) {
 246                 unsigned int flags = __connman_ipconfig_get_flags(index);
 247
 248                 if (flags > 0)
 249                         callback(flags, 0, user_data);
 250         }
 251
 252         return watch->id;
 253 }
 254
 255 /**
 256  * connman_rtnl_remove_watch:
 257  * @id: watch identifier
 258  *
 259  * Remove the RTNL watch for the identifier
 260  */
 261 void connman_rtnl_remove_watch(unsigned int id)
 262 {
 263         GSList *list;
 264
 265         DBG("id %d", id);
 266
 267         if (id == 0)
 268                 return;
 269
 270         for (list = watch_list; list; list = list->next) {
 271                 struct watch_data *watch = list->data;
 272
 273                 if (watch->id  == id) {
 274                         watch_list = g_slist_remove(watch_list, watch);
 275                         g_free(watch);
 276                         break;
 277                 }
 278         }
 279 }
 280
 281 static void trigger_rtnl(int index, void *user_data)
 282 {
 283         struct connman_rtnl *rtnl = user_data;
 284
 285         if (rtnl->newlink) {
 286                 unsigned short type = __connman_ipconfig_get_type(index);
 287                 unsigned int flags = __connman_ipconfig_get_flags(index);
 288
 289                 rtnl->newlink(type, index, flags, 0);
 290         }
 291
 292         if (rtnl->newgateway) {
 293                 const char *gateway = __connman_ipconfig_get_gateway(index);
 294
 295                 if (gateway != NULL)
 296                         rtnl->newgateway(index, gateway);
 297         }
 298 }
 299
 300 static GSList *rtnl_list = NULL;
 301
 302 static gint compare_priority(gconstpointer a, gconstpointer b)
 303 {
 304         const struct connman_rtnl *rtnl1 = a;
 305         const struct connman_rtnl *rtnl2 = b;
 306
 307         return rtnl2->priority - rtnl1->priority;
 308 }
 309
 310 /**
 311  * connman_rtnl_register:
 312  * @rtnl: RTNL module
 313  *
 314  * Register a new RTNL module
 315  *
 316  * Returns: %0 on success
 317  */
 318 int connman_rtnl_register(struct connman_rtnl *rtnl)
 319 {
 320         DBG("rtnl %p name %s", rtnl, rtnl->name);
 321
 322         rtnl_list = g_slist_insert_sorted(rtnl_list, rtnl,
 323                                                         compare_priority);
 324
 325         __connman_ipconfig_foreach(trigger_rtnl, rtnl);
 326
 327         return 0;
 328 }
 329
 330 /**
 331  * connman_rtnl_unregister:
 332  * @rtnl: RTNL module
 333  *
 334  * Remove a previously registered RTNL module
 335  */
 336 void connman_rtnl_unregister(struct connman_rtnl *rtnl)
 337 {
 338         DBG("rtnl %p name %s", rtnl, rtnl->name);
 339
 340         rtnl_list = g_slist_remove(rtnl_list, rtnl);
 341 }
 342
 343 static const char *operstate2str(unsigned char operstate)
 344 {
 345         switch (operstate) {
 346         case IF_OPER_UNKNOWN:
 347                 return "UNKNOWN";
 348         case IF_OPER_NOTPRESENT:
 349                 return "NOT-PRESENT";
 350         case IF_OPER_DOWN:
 351                 return "DOWN";
 352         case IF_OPER_LOWERLAYERDOWN:
 353                 return "LOWER-LAYER-DOWN";
 354         case IF_OPER_TESTING:
 355                 return "TESTING";
 356         case IF_OPER_DORMANT:
 357                 return "DORMANT";
 358         case IF_OPER_UP:
 359                 return "UP";
 360         }
 361
 362         return "";
 363 }
 364
 365 static void extract_link(struct ifinfomsg *msg, int bytes,
 366                                 struct ether_addr *address, const char **ifname,
 367                                 unsigned int *mtu, unsigned char *operstate,
 368                                                 struct rtnl_link_stats *stats)
 369 {
 370         struct rtattr *attr;
 371
 372         for (attr = IFLA_RTA(msg); RTA_OK(attr, bytes);
 373                                         attr = RTA_NEXT(attr, bytes)) {
 374                 switch (attr->rta_type) {
 375                 case IFLA_ADDRESS:
 376                         if (address != NULL)
 377                                 memcpy(address, RTA_DATA(attr), ETH_ALEN);
 378                         break;
 379                 case IFLA_IFNAME:
 380                         if (ifname != NULL)
 381                                 *ifname = RTA_DATA(attr);
 382                         break;
 383                 case IFLA_MTU:
 384                         if (mtu != NULL)
 385                                 *mtu = *((unsigned int *) RTA_DATA(attr));
 386                         break;
 387                 case IFLA_STATS:
 388                         if (stats != NULL)
 389                                 memcpy(stats, RTA_DATA(attr),
 390                                         sizeof(struct rtnl_link_stats));
 391                         break;
 392                 case IFLA_OPERSTATE:
 393                         if (operstate != NULL)
 394                                 *operstate = *((unsigned char *) RTA_DATA(attr));
 395                         break;
 396                 case IFLA_LINKMODE:
 397                         break;
 398                 }
 399         }
 400 }
 401
 402 static void process_newlink(unsigned short type, int index, unsigned flags,
 403                         unsigned change, struct ifinfomsg *msg, int bytes)
 404 {
 405         struct ether_addr address = {{ 0, 0, 0, 0, 0, 0 }};
 406         struct ether_addr compare = {{ 0, 0, 0, 0, 0, 0 }};
 407         struct rtnl_link_stats stats;
 408         unsigned char operstate = 0xff;
 409         struct interface_data *interface;
 410         const char *ifname = NULL;
 411         unsigned int mtu = 0;
 412         char ident[13], str[18];
 413         GSList *list;
 414
 415         memset(&stats, 0, sizeof(stats));
 416         extract_link(msg, bytes, &address, &ifname, &mtu, &operstate, &stats);
 417
 418         snprintf(ident, 13, "%02x%02x%02x%02x%02x%02x",
 419                                                 address.ether_addr_octet[0],
 420                                                 address.ether_addr_octet[1],
 421                                                 address.ether_addr_octet[2],
 422                                                 address.ether_addr_octet[3],
 423                                                 address.ether_addr_octet[4],
 424                                                 address.ether_addr_octet[5]);
 425
 426         snprintf(str, 18, "%02X:%02X:%02X:%02X:%02X:%02X",
 427                                                 address.ether_addr_octet[0],
 428                                                 address.ether_addr_octet[1],
 429                                                 address.ether_addr_octet[2],
 430                                                 address.ether_addr_octet[3],
 431                                                 address.ether_addr_octet[4],
 432                                                 address.ether_addr_octet[5]);
 433
 434         switch (type) {
 435         case ARPHRD_ETHER:
 436         case ARPHRD_LOOPBACK:
 437         case ARPHDR_PHONET_PIPE:
 438         case ARPHRD_NONE:
 439                 __connman_ipconfig_newlink(index, type, flags,
 440                                                         str, mtu, &stats);
 441                 break;
 442         }
 443
 444         if (memcmp(&address, &compare, ETH_ALEN) != 0)
 445                 connman_info("%s {newlink} index %d address %s mtu %u",
 446                                                 ifname, index, str, mtu);
 447
 448         if (operstate != 0xff)
 449                 connman_info("%s {newlink} index %d operstate %u <%s>",
 450                                                 ifname, index, operstate,
 451                                                 operstate2str(operstate));
 452
 453         interface = g_hash_table_lookup(interface_list, GINT_TO_POINTER(index));
 454         if (interface == NULL) {
 455                 interface = g_new0(struct interface_data, 1);
 456                 interface->index = index;
 457                 interface->name = g_strdup(ifname);
 458                 interface->ident = g_strdup(ident);
 459
 460                 g_hash_table_insert(interface_list,
 461                                         GINT_TO_POINTER(index), interface);
 462
 463                 if (type == ARPHRD_ETHER)
 464                         read_uevent(interface);
 465
 466                 __connman_technology_add_interface(interface->service_type,
 467                         interface->index, interface->name, interface->ident);
 468         }
 469
 470         for (list = rtnl_list; list; list = list->next) {
 471                 struct connman_rtnl *rtnl = list->data;
 472
 473                 if (rtnl->newlink)
 474                         rtnl->newlink(type, index, flags, change);
 475         }
 476
 477         for (list = watch_list; list; list = list->next) {
 478                 struct watch_data *watch = list->data;
 479
 480                 if (watch->index != index)
 481                         continue;
 482
 483                 if (watch->newlink)
 484                         watch->newlink(flags, change, watch->user_data);
 485         }
 486 }
 487
 488 static void process_dellink(unsigned short type, int index, unsigned flags,
 489                         unsigned change, struct ifinfomsg *msg, int bytes)
 490 {
 491         struct rtnl_link_stats stats;
 492         unsigned char operstate = 0xff;
 493         const char *ifname = NULL;
 494         GSList *list;
 495
 496         memset(&stats, 0, sizeof(stats));
 497         extract_link(msg, bytes, NULL, &ifname, NULL, &operstate, &stats);
 498
 499         if (operstate != 0xff)
 500                 connman_info("%s {dellink} index %d operstate %u <%s>",
 501                                                 ifname, index, operstate,
 502                                                 operstate2str(operstate));
 503
 504         for (list = rtnl_list; list; list = list->next) {
 505                 struct connman_rtnl *rtnl = list->data;
 506
 507                 if (rtnl->dellink)
 508                         rtnl->dellink(type, index, flags, change);
 509         }
 510
 511         switch (type) {
 512         case ARPHRD_ETHER:
 513         case ARPHRD_LOOPBACK:
 514         case ARPHRD_NONE:
 515                 __connman_ipconfig_dellink(index, &stats);
 516                 break;
 517         }
 518
 519         g_hash_table_remove(interface_list, GINT_TO_POINTER(index));
 520 }
 521
 522 static void extract_ipv4_addr(struct ifaddrmsg *msg, int bytes,
 523                                                 const char **label,
 524                                                 struct in_addr *local,
 525                                                 struct in_addr *address,
 526                                                 struct in_addr *broadcast)
 527 {
 528         struct rtattr *attr;
 529
 530         for (attr = IFA_RTA(msg); RTA_OK(attr, bytes);
 531                                         attr = RTA_NEXT(attr, bytes)) {
 532                 switch (attr->rta_type) {
 533                 case IFA_ADDRESS:
 534                         if (address != NULL)
 535                                 *address = *((struct in_addr *) RTA_DATA(attr));
 536                         break;
 537                 case IFA_LOCAL:
 538                         if (local != NULL)
 539                                 *local = *((struct in_addr *) RTA_DATA(attr));
 540                         break;
 541                 case IFA_BROADCAST:
 542                         if (broadcast != NULL)
 543                                 *broadcast = *((struct in_addr *) RTA_DATA(attr));
 544                         break;
 545                 case IFA_LABEL:
 546                         if (label != NULL)
 547                                 *label = RTA_DATA(attr);
 548                         break;
 549                 }
 550         }
 551 }
 552
 553 static void extract_ipv6_addr(struct ifaddrmsg *msg, int bytes,
 554                                                 struct in6_addr *addr,
 555                                                 struct in6_addr *local)
 556 {
 557         struct rtattr *attr;
 558
 559         for (attr = IFA_RTA(msg); RTA_OK(attr, bytes);
 560                                         attr = RTA_NEXT(attr, bytes)) {
 561                 switch (attr->rta_type) {
 562                 case IFA_ADDRESS:
 563                         if (addr != NULL)
 564                                 *addr = *((struct in6_addr *) RTA_DATA(attr));
 565                         break;
 566                 case IFA_LOCAL:
 567                         if (local != NULL)
 568                                 *local = *((struct in6_addr *) RTA_DATA(attr));
 569                         break;
 570                 }
 571         }
 572 }
 573
 574 static void process_newaddr(unsigned char family, unsigned char prefixlen,
 575                                 int index, struct ifaddrmsg *msg, int bytes)
 576 {
 577         const char *label = NULL;
 578         void *src;
 579         char ip_string[INET6_ADDRSTRLEN];
 580
 581         if (family != AF_INET && family != AF_INET6)
 582                 return;
 583
 584         if (family == AF_INET) {
 585                 struct in_addr ipv4_addr = { INADDR_ANY };
 586
 587                 extract_ipv4_addr(msg, bytes, &label, &ipv4_addr, NULL, NULL);
 588                 src = &ipv4_addr;
 589         } else if (family == AF_INET6) {
 590                 struct in6_addr ipv6_address, ipv6_local;
 591
 592                 extract_ipv6_addr(msg, bytes, &ipv6_address, &ipv6_local);
 593                 if (IN6_IS_ADDR_LINKLOCAL(&ipv6_address))
 594                         return;
 595
 596                 src = &ipv6_address;
 597         }
 598
 599         if (inet_ntop(family, src, ip_string, INET6_ADDRSTRLEN) == NULL)
 600                 return;
 601
 602         __connman_ipconfig_newaddr(index, family, label,
 603                                         prefixlen, ip_string);
 604 }
 605
 606 static void process_deladdr(unsigned char family, unsigned char prefixlen,
 607                                 int index, struct ifaddrmsg *msg, int bytes)
 608 {
 609         const char *label = NULL;
 610         void *src;
 611         char ip_string[INET6_ADDRSTRLEN];
 612
 613         if (family != AF_INET && family != AF_INET6)
 614                 return;
 615
 616         if (family == AF_INET) {
 617                 struct in_addr ipv4_addr = { INADDR_ANY };
 618
 619                 extract_ipv4_addr(msg, bytes, &label, &ipv4_addr, NULL, NULL);
 620                 src = &ipv4_addr;
 621         } else if (family == AF_INET6) {
 622                 struct in6_addr ipv6_address, ipv6_local;
 623
 624                 extract_ipv6_addr(msg, bytes, &ipv6_address, &ipv6_local);
 625                 if (IN6_IS_ADDR_LINKLOCAL(&ipv6_address))
 626                         return;
 627
 628                 src = &ipv6_address;
 629         }
 630
 631         if (inet_ntop(family, src, ip_string, INET6_ADDRSTRLEN) == NULL)
 632                 return;
 633
 634         __connman_ipconfig_deladdr(index, family, label,
 635                                         prefixlen, ip_string);
 636 }
 637
 638 static void extract_route(struct rtmsg *msg, int bytes, int *index,
 639                                                 struct in_addr *dst,
 640                                                 struct in_addr *gateway)
 641 {
 642         struct rtattr *attr;
 643
 644         for (attr = RTM_RTA(msg); RTA_OK(attr, bytes);
 645                                         attr = RTA_NEXT(attr, bytes)) {
 646                 switch (attr->rta_type) {
 647                 case RTA_DST:
 648                         if (dst != NULL)
 649                                 *dst = *((struct in_addr *) RTA_DATA(attr));
 650                         break;
 651                 case RTA_GATEWAY:
 652                         if (gateway != NULL)
 653                                 *gateway = *((struct in_addr *) RTA_DATA(attr));
 654                         break;
 655                 case RTA_OIF:
 656                         if (index != NULL)
 657                                 *index = *((int *) RTA_DATA(attr));
 658                         break;
 659                 }
 660         }
 661 }
 662
 663 static void process_newroute(unsigned char family, unsigned char scope,
 664                                                 struct rtmsg *msg, int bytes)
 665 {
 666         GSList *list;
 667         struct in_addr dst = { INADDR_ANY }, gateway = { INADDR_ANY };
 668         char dststr[16], gatewaystr[16];
 669         int index = -1;
 670
 671         if (family != AF_INET)
 672                 return;
 673
 674         extract_route(msg, bytes, &index, &dst, &gateway);
 675
 676         inet_ntop(family, &dst, dststr, sizeof(dststr));
 677         inet_ntop(family, &gateway, gatewaystr, sizeof(gatewaystr));
 678
 679         __connman_ipconfig_newroute(index, family, scope, dststr, gatewaystr);
 680
 681         /* skip host specific routes */
 682         if (scope != RT_SCOPE_UNIVERSE &&
 683                         !(scope == RT_SCOPE_LINK && dst.s_addr == INADDR_ANY))
 684                 return;
 685
 686         if (dst.s_addr != INADDR_ANY)
 687                 return;
 688
 689         for (list = rtnl_list; list; list = list->next) {
 690                 struct connman_rtnl *rtnl = list->data;
 691
 692                 if (rtnl->newgateway)
 693                         rtnl->newgateway(index, gatewaystr);
 694         }
 695 }
 696
 697 static void process_delroute(unsigned char family, unsigned char scope,
 698                                                 struct rtmsg *msg, int bytes)
 699 {
 700         GSList *list;
 701         struct in_addr dst = { INADDR_ANY }, gateway = { INADDR_ANY };
 702         char dststr[16], gatewaystr[16];
 703         int index = -1;
 704
 705         if (family != AF_INET)
 706                 return;
 707
 708         extract_route(msg, bytes, &index, &dst, &gateway);
 709
 710         inet_ntop(family, &dst, dststr, sizeof(dststr));
 711         inet_ntop(family, &gateway, gatewaystr, sizeof(gatewaystr));
 712
 713         __connman_ipconfig_delroute(index, family, scope, dststr, gatewaystr);
 714
 715         /* skip host specific routes */
 716         if (scope != RT_SCOPE_UNIVERSE &&
 717                         !(scope == RT_SCOPE_LINK && dst.s_addr == INADDR_ANY))
 718                 return;
 719
 720         if (dst.s_addr != INADDR_ANY)
 721                 return;
 722
 723         for (list = rtnl_list; list; list = list->next) {
 724                 struct connman_rtnl *rtnl = list->data;
 725
 726                 if (rtnl->delgateway)
 727                         rtnl->delgateway(index, gatewaystr);
 728         }
 729 }
 730
 731 static inline void print_ether(struct rtattr *attr, const char *name)
 732 {
 733         int len = (int) RTA_PAYLOAD(attr);
 734
 735         if (len == ETH_ALEN) {
 736                 struct ether_addr eth;
 737                 memcpy(&eth, RTA_DATA(attr), ETH_ALEN);
 738                 print("  attr %s (len %d) %s\n", name, len, ether_ntoa(&eth));
 739         } else
 740                 print("  attr %s (len %d)\n", name, len);
 741 }
 742
 743 static inline void print_inet(struct rtattr *attr, const char *name,
 744                                                         unsigned char family)
 745 {
 746         int len = (int) RTA_PAYLOAD(attr);
 747
 748         if (family == AF_INET && len == sizeof(struct in_addr)) {
 749                 struct in_addr addr;
 750                 addr = *((struct in_addr *) RTA_DATA(attr));
 751                 print("  attr %s (len %d) %s\n", name, len, inet_ntoa(addr));
 752         } else
 753                 print("  attr %s (len %d)\n", name, len);
 754 }
 755
 756 static inline void print_string(struct rtattr *attr, const char *name)
 757 {
 758         print("  attr %s (len %d) %s\n", name, (int) RTA_PAYLOAD(attr),
 759                                                 (char *) RTA_DATA(attr));
 760 }
 761
 762 static inline void print_byte(struct rtattr *attr, const char *name)
 763 {
 764         print("  attr %s (len %d) 0x%02x\n", name, (int) RTA_PAYLOAD(attr),
 765                                         *((unsigned char *) RTA_DATA(attr)));
 766 }
 767
 768 static inline void print_integer(struct rtattr *attr, const char *name)
 769 {
 770         print("  attr %s (len %d) %d\n", name, (int) RTA_PAYLOAD(attr),
 771                                                 *((int *) RTA_DATA(attr)));
 772 }
 773
 774 static inline void print_attr(struct rtattr *attr, const char *name)
 775 {
 776         int len = (int) RTA_PAYLOAD(attr);
 777
 778         if (name && len > 0)
 779                 print("  attr %s (len %d)\n", name, len);
 780         else
 781                 print("  attr %d (len %d)\n", attr->rta_type, len);
 782 }
 783
 784 static void rtnl_link(struct nlmsghdr *hdr)
 785 {
 786         struct ifinfomsg *msg;
 787         struct rtattr *attr;
 788         int bytes;
 789
 790         msg = (struct ifinfomsg *) NLMSG_DATA(hdr);
 791         bytes = IFLA_PAYLOAD(hdr);
 792
 793         print("ifi_index %d ifi_flags 0x%04x", msg->ifi_index, msg->ifi_flags);
 794
 795         for (attr = IFLA_RTA(msg); RTA_OK(attr, bytes);
 796                                         attr = RTA_NEXT(attr, bytes)) {
 797                 switch (attr->rta_type) {
 798                 case IFLA_ADDRESS:
 799                         print_ether(attr, "address");
 800                         break;
 801                 case IFLA_BROADCAST:
 802                         print_ether(attr, "broadcast");
 803                         break;
 804                 case IFLA_IFNAME:
 805                         print_string(attr, "ifname");
 806                         break;
 807                 case IFLA_MTU:
 808                         print_integer(attr, "mtu");
 809                         break;
 810                 case IFLA_LINK:
 811                         print_attr(attr, "link");
 812                         break;
 813                 case IFLA_QDISC:
 814                         print_attr(attr, "qdisc");
 815                         break;
 816                 case IFLA_STATS:
 817                         print_attr(attr, "stats");
 818                         break;
 819                 case IFLA_COST:
 820                         print_attr(attr, "cost");
 821                         break;
 822                 case IFLA_PRIORITY:
 823                         print_attr(attr, "priority");
 824                         break;
 825                 case IFLA_MASTER:
 826                         print_attr(attr, "master");
 827                         break;
 828                 case IFLA_WIRELESS:
 829                         print_attr(attr, "wireless");
 830                         break;
 831                 case IFLA_PROTINFO:
 832                         print_attr(attr, "protinfo");
 833                         break;
 834                 case IFLA_TXQLEN:
 835                         print_integer(attr, "txqlen");
 836                         break;
 837                 case IFLA_MAP:
 838                         print_attr(attr, "map");
 839                         break;
 840                 case IFLA_WEIGHT:
 841                         print_attr(attr, "weight");
 842                         break;
 843                 case IFLA_OPERSTATE:
 844                         print_byte(attr, "operstate");
 845                         break;
 846                 case IFLA_LINKMODE:
 847                         print_byte(attr, "linkmode");
 848                         break;
 849                 default:
 850                         print_attr(attr, NULL);
 851                         break;
 852                 }
 853         }
 854 }
 855
 856 static void rtnl_newlink(struct nlmsghdr *hdr)
 857 {
 858         struct ifinfomsg *msg = (struct ifinfomsg *) NLMSG_DATA(hdr);
 859
 860         rtnl_link(hdr);
 861
 862         process_newlink(msg->ifi_type, msg->ifi_index, msg->ifi_flags,
 863                                 msg->ifi_change, msg, IFA_PAYLOAD(hdr));
 864 }
 865
 866 static void rtnl_dellink(struct nlmsghdr *hdr)
 867 {
 868         struct ifinfomsg *msg = (struct ifinfomsg *) NLMSG_DATA(hdr);
 869
 870         rtnl_link(hdr);
 871
 872         process_dellink(msg->ifi_type, msg->ifi_index, msg->ifi_flags,
 873                                 msg->ifi_change, msg, IFA_PAYLOAD(hdr));
 874 }
 875
 876 static void rtnl_addr(struct nlmsghdr *hdr)
 877 {
 878         struct ifaddrmsg *msg;
 879         struct rtattr *attr;
 880         int bytes;
 881
 882         msg = (struct ifaddrmsg *) NLMSG_DATA(hdr);
 883         bytes = IFA_PAYLOAD(hdr);
 884
 885         print("ifa_family %d ifa_index %d", msg->ifa_family, msg->ifa_index);
 886
 887         for (attr = IFA_RTA(msg); RTA_OK(attr, bytes);
 888                                         attr = RTA_NEXT(attr, bytes)) {
 889                 switch (attr->rta_type) {
 890                 case IFA_ADDRESS:
 891                         print_inet(attr, "address", msg->ifa_family);
 892                         break;
 893                 case IFA_LOCAL:
 894                         print_inet(attr, "local", msg->ifa_family);
 895                         break;
 896                 case IFA_LABEL:
 897                         print_string(attr, "label");
 898                         break;
 899                 case IFA_BROADCAST:
 900                         print_inet(attr, "broadcast", msg->ifa_family);
 901                         break;
 902                 case IFA_ANYCAST:
 903                         print_attr(attr, "anycast");
 904                         break;
 905                 case IFA_CACHEINFO:
 906                         print_attr(attr, "cacheinfo");
 907                         break;
 908                 case IFA_MULTICAST:
 909                         print_attr(attr, "multicast");
 910                         break;
 911                 default:
 912                         print_attr(attr, NULL);
 913                         break;
 914                 }
 915         }
 916 }
 917
 918 static void rtnl_newaddr(struct nlmsghdr *hdr)
 919 {
 920         struct ifaddrmsg *msg = (struct ifaddrmsg *) NLMSG_DATA(hdr);
 921
 922         rtnl_addr(hdr);
 923
 924         process_newaddr(msg->ifa_family, msg->ifa_prefixlen, msg->ifa_index,
 925                                                 msg, IFA_PAYLOAD(hdr));
 926 }
 927
 928 static void rtnl_deladdr(struct nlmsghdr *hdr)
 929 {
 930         struct ifaddrmsg *msg = (struct ifaddrmsg *) NLMSG_DATA(hdr);
 931
 932         rtnl_addr(hdr);
 933
 934         process_deladdr(msg->ifa_family, msg->ifa_prefixlen, msg->ifa_index,
 935                                                 msg, IFA_PAYLOAD(hdr));
 936 }
 937
 938 static void rtnl_route(struct nlmsghdr *hdr)
 939 {
 940         struct rtmsg *msg;
 941         struct rtattr *attr;
 942         int bytes;
 943
 944         msg = (struct rtmsg *) NLMSG_DATA(hdr);
 945         bytes = RTM_PAYLOAD(hdr);
 946
 947         print("rtm_family %d rtm_table %d rtm_protocol %d",
 948                         msg->rtm_family, msg->rtm_table, msg->rtm_protocol);
 949         print("rtm_scope %d rtm_type %d rtm_flags 0x%04x",
 950                                 msg->rtm_scope, msg->rtm_type, msg->rtm_flags);
 951
 952         for (attr = RTM_RTA(msg); RTA_OK(attr, bytes);
 953                                         attr = RTA_NEXT(attr, bytes)) {
 954                 switch (attr->rta_type) {
 955                 case RTA_DST:
 956                         print_inet(attr, "dst", msg->rtm_family);
 957                         break;
 958                 case RTA_SRC:
 959                         print_inet(attr, "src", msg->rtm_family);
 960                         break;
 961                 case RTA_IIF:
 962                         print_string(attr, "iif");
 963                         break;
 964                 case RTA_OIF:
 965                         print_integer(attr, "oif");
 966                         break;
 967                 case RTA_GATEWAY:
 968                         print_inet(attr, "gateway", msg->rtm_family);
 969                         break;
 970                 case RTA_PRIORITY:
 971                         print_attr(attr, "priority");
 972                         break;
 973                 case RTA_PREFSRC:
 974                         print_inet(attr, "prefsrc", msg->rtm_family);
 975                         break;
 976                 case RTA_METRICS:
 977                         print_attr(attr, "metrics");
 978                         break;
 979                 case RTA_TABLE:
 980                         print_integer(attr, "table");
 981                         break;
 982                 default:
 983                         print_attr(attr, NULL);
 984                         break;
 985                 }
 986         }
 987 }
 988
 989 static connman_bool_t is_route_rtmsg(struct rtmsg *msg)
 990 {
 991
 992         if (msg->rtm_table != RT_TABLE_MAIN)
 993                 return FALSE;
 994
 995         if (msg->rtm_protocol != RTPROT_BOOT &&
 996                         msg->rtm_protocol != RTPROT_KERNEL)
 997                 return FALSE;
 998
 999         if (msg->rtm_type != RTN_UNICAST)
1000                 return FALSE;
1001
1002         return TRUE;
1003 }
1004
1005 static void rtnl_newroute(struct nlmsghdr *hdr)
1006 {
1007         struct rtmsg *msg = (struct rtmsg *) NLMSG_DATA(hdr);
1008
1009         rtnl_route(hdr);
1010
1011         if (is_route_rtmsg(msg))
1012                 process_newroute(msg->rtm_family, msg->rtm_scope,
1013                                                 msg, RTM_PAYLOAD(hdr));
1014 }
1015
1016 static void rtnl_delroute(struct nlmsghdr *hdr)
1017 {
1018         struct rtmsg *msg = (struct rtmsg *) NLMSG_DATA(hdr);
1019
1020         rtnl_route(hdr);
1021
1022         if (is_route_rtmsg(msg))
1023                 process_delroute(msg->rtm_family, msg->rtm_scope,
1024                                                 msg, RTM_PAYLOAD(hdr));
1025 }
1026
1027 static void *rtnl_nd_opt_rdnss(struct nd_opt_hdr *opt, guint32 *lifetime,
1028                                int *nr_servers)
1029 {
1030         guint32 *optint = (void *)opt;
1031
1032         if (opt->nd_opt_len < 3)
1033                 return NULL;
1034
1035         if (*lifetime > ntohl(optint[1]))
1036                 *lifetime = ntohl(optint[1]);
1037
1038         /* nd_opt_len is in units of 8 bytes. The header is 1 unit (8 bytes)
1039            and each address is another 2 units (16 bytes).
1040            So the number of addresses (given rounding) is nd_opt_len/2 */
1041         *nr_servers = opt->nd_opt_len / 2;
1042
1043         /* And they start 8 bytes into the packet, or two guint32s in. */
1044         return optint + 2;
1045 }
1046
1047 static const char **rtnl_nd_opt_dnssl(struct nd_opt_hdr *opt, guint32 *lifetime)
1048 {
1049         const char **domains = NULL;
1050         guint32 *optint = (void *)opt;
1051         unsigned char *optc = (void *)&optint[2];
1052         int data_len = (opt->nd_opt_len * 8) - 8;
1053         int nr_domains = 0;
1054         int i, tmp;
1055
1056         if (*lifetime > ntohl(optint[1]))
1057                 *lifetime = ntohl(optint[1]);
1058
1059         /* Turn it into normal strings by converting the length bytes into '.',
1060            and count how many search domains there are while we're at it. */
1061         i = 0;
1062         while (i < data_len) {
1063                 if (optc[i] > 0x3f) {
1064                         DBG("DNSSL contains compressed elements in violation of RFC6106");
1065                         return NULL;
1066                 }
1067
1068                 if (optc[i] == 0) {
1069                         nr_domains++;
1070                         i++;
1071                         /* Check for double zero */
1072                         if (i < data_len && optc[i] == 0)
1073                                 break;
1074                         continue;
1075                 }
1076
1077                 tmp = i;
1078                 i += optc[i] + 1;
1079
1080                 if (i >= data_len) {
1081                         DBG("DNSSL data overflows option length");
1082                         return NULL;
1083                 }
1084
1085                 optc[tmp] = '.';
1086         }
1087
1088         domains = g_try_new0(const char *, nr_domains + 1);
1089         if (!domains)
1090                 return NULL;
1091
1092         /* Now point to the normal strings, missing out the leading '.' that
1093            each of them will have now. */
1094         for (i = 0; i < nr_domains; i++) {
1095                 domains[i] = (char *)optc + 1;
1096                 optc += strlen((char *)optc) + 1;
1097         }
1098
1099         return domains;
1100 }
1101
1102 static void rtnl_newnduseropt(struct nlmsghdr *hdr)
1103 {
1104         struct nduseroptmsg *msg = (struct nduseroptmsg *) NLMSG_DATA(hdr);
1105         struct nd_opt_hdr *opt = (void *)&msg[1];
1106         guint32 lifetime = -1;
1107         const char **domains = NULL;
1108         struct in6_addr *servers;
1109         int nr_servers = 0;
1110         int msglen = msg->nduseropt_opts_len;
1111         char *interface;
1112
1113         DBG("family %02x index %x len %04x type %02x code %02x",
1114             msg->nduseropt_family, msg->nduseropt_ifindex,
1115             msg->nduseropt_opts_len, msg->nduseropt_icmp_type,
1116             msg->nduseropt_icmp_code);
1117
1118         if (msg->nduseropt_family != AF_INET6 ||
1119             msg->nduseropt_icmp_type != ND_ROUTER_ADVERT ||
1120             msg->nduseropt_icmp_code != 0)
1121                 return;
1122
1123         interface = connman_inet_ifname(msg->nduseropt_ifindex);
1124         if (!interface)
1125                 return;
1126
1127         for (opt = (void *)&msg[1];
1128              msglen >= 2 && msglen >= opt->nd_opt_len && opt->nd_opt_len;
1129              msglen -= opt->nd_opt_len,
1130                      opt = ((void *)opt) + opt->nd_opt_len*8) {
1131
1132                 DBG("nd opt type %d len %d\n",
1133                     opt->nd_opt_type, opt->nd_opt_len);
1134
1135                 if (opt->nd_opt_type == 25)
1136                         servers = rtnl_nd_opt_rdnss(opt, &lifetime,
1137                                                     &nr_servers);
1138                 else if (opt->nd_opt_type == 31)
1139                         domains = rtnl_nd_opt_dnssl(opt, &lifetime);
1140         }
1141
1142         if (nr_servers) {
1143                 int i, j;
1144                 char buf[40];
1145
1146                 for (i = 0; i < nr_servers; i++) {
1147                         if (!inet_ntop(AF_INET6, servers + i, buf, sizeof(buf)))
1148                                 continue;
1149
1150                         if (domains == NULL || domains[0] == NULL) {
1151                                 connman_resolver_append_lifetime(interface,
1152                                                         NULL, buf, lifetime);
1153                                 continue;
1154                         }
1155
1156                         for (j = 0; domains[j]; j++)
1157                                 connman_resolver_append_lifetime(interface,
1158                                                                 domains[j],
1159                                                                 buf, lifetime);
1160                 }
1161         }
1162         g_free(domains);
1163         g_free(interface);
1164 }
1165
1166 static const char *type2string(uint16_t type)
1167 {
1168         switch (type) {
1169         case NLMSG_NOOP:
1170                 return "NOOP";
1171         case NLMSG_ERROR:
1172                 return "ERROR";
1173         case NLMSG_DONE:
1174                 return "DONE";
1175         case NLMSG_OVERRUN:
1176                 return "OVERRUN";
1177         case RTM_GETLINK:
1178                 return "GETLINK";
1179         case RTM_NEWLINK:
1180                 return "NEWLINK";
1181         case RTM_DELLINK:
1182                 return "DELLINK";
1183         case RTM_NEWADDR:
1184                 return "NEWADDR";
1185         case RTM_DELADDR:
1186                 return "DELADDR";
1187         case RTM_GETROUTE:
1188                 return "GETROUTE";
1189         case RTM_NEWROUTE:
1190                 return "NEWROUTE";
1191         case RTM_DELROUTE:
1192                 return "DELROUTE";
1193         case RTM_NEWNDUSEROPT:
1194                 return "NEWNDUSEROPT";
1195         default:
1196                 return "UNKNOWN";
1197         }
1198 }
1199
1200 static GIOChannel *channel = NULL;
1201
1202 struct rtnl_request {
1203         struct nlmsghdr hdr;
1204         struct rtgenmsg msg;
1205 };
1206 #define RTNL_REQUEST_SIZE  (sizeof(struct nlmsghdr) + sizeof(struct rtgenmsg))
1207
1208 static GSList *request_list = NULL;
1209 static guint32 request_seq = 0;
1210
1211 static struct rtnl_request *find_request(guint32 seq)
1212 {
1213         GSList *list;
1214
1215         for (list = request_list; list; list = list->next) {
1216                 struct rtnl_request *req = list->data;
1217
1218                 if (req->hdr.nlmsg_seq == seq)
1219                         return req;
1220         }
1221
1222         return NULL;
1223 }
1224
1225 static int send_request(struct rtnl_request *req)
1226 {
1227         struct sockaddr_nl addr;
1228         int sk;
1229
1230         DBG("%s len %d type %d flags 0x%04x seq %d",
1231                                 type2string(req->hdr.nlmsg_type),
1232                                 req->hdr.nlmsg_len, req->hdr.nlmsg_type,
1233                                 req->hdr.nlmsg_flags, req->hdr.nlmsg_seq);
1234
1235         sk = g_io_channel_unix_get_fd(channel);
1236
1237         memset(&addr, 0, sizeof(addr));
1238         addr.nl_family = AF_NETLINK;
1239
1240         return sendto(sk, req, req->hdr.nlmsg_len, 0,
1241                                 (struct sockaddr *) &addr, sizeof(addr));
1242 }
1243
1244 static int queue_request(struct rtnl_request *req)
1245 {
1246         request_list = g_slist_append(request_list, req);
1247
1248         if (g_slist_length(request_list) > 1)
1249                 return 0;
1250
1251         return send_request(req);
1252 }
1253
1254 static int process_response(guint32 seq)
1255 {
1256         struct rtnl_request *req;
1257
1258         DBG("seq %d", seq);
1259
1260         req = find_request(seq);
1261         if (req != NULL) {
1262                 request_list = g_slist_remove(request_list, req);
1263                 g_free(req);
1264         }
1265
1266         req = g_slist_nth_data(request_list, 0);
1267         if (req == NULL)
1268                 return 0;
1269
1270         return send_request(req);
1271 }
1272
1273 static void rtnl_message(void *buf, size_t len)
1274 {
1275         DBG("buf %p len %zd", buf, len);
1276
1277         while (len > 0) {
1278                 struct nlmsghdr *hdr = buf;
1279                 struct nlmsgerr *err;
1280
1281                 if (!NLMSG_OK(hdr, len))
1282                         break;
1283
1284                 DBG("%s len %d type %d flags 0x%04x seq %d",
1285                                         type2string(hdr->nlmsg_type),
1286                                         hdr->nlmsg_len, hdr->nlmsg_type,
1287                                         hdr->nlmsg_flags, hdr->nlmsg_seq);
1288
1289                 switch (hdr->nlmsg_type) {
1290                 case NLMSG_NOOP:
1291                 case NLMSG_OVERRUN:
1292                         return;
1293                 case NLMSG_DONE:
1294                         process_response(hdr->nlmsg_seq);
1295                         return;
1296                 case NLMSG_ERROR:
1297                         err = NLMSG_DATA(hdr);
1298                         DBG("error %d (%s)", -err->error,
1299                                                 strerror(-err->error));
1300                         return;
1301                 case RTM_NEWLINK:
1302                         rtnl_newlink(hdr);
1303                         break;
1304                 case RTM_DELLINK:
1305                         rtnl_dellink(hdr);
1306                         break;
1307                 case RTM_NEWADDR:
1308                         rtnl_newaddr(hdr);
1309                         break;
1310                 case RTM_DELADDR:
1311                         rtnl_deladdr(hdr);
1312                         break;
1313                 case RTM_NEWROUTE:
1314                         rtnl_newroute(hdr);
1315                         break;
1316                 case RTM_DELROUTE:
1317                         rtnl_delroute(hdr);
1318                         break;
1319                 case RTM_NEWNDUSEROPT:
1320                         rtnl_newnduseropt(hdr);
1321                         break;
1322                 }
1323
1324                 len -= hdr->nlmsg_len;
1325                 buf += hdr->nlmsg_len;
1326         }
1327 }
1328
1329 static gboolean netlink_event(GIOChannel *chan,
1330                                 GIOCondition cond, gpointer data)
1331 {
1332         unsigned char buf[4096];
1333         gsize len;
1334         GIOStatus status;
1335
1336         if (cond & (G_IO_NVAL | G_IO_HUP | G_IO_ERR))
1337                 return FALSE;
1338
1339         memset(buf, 0, sizeof(buf));
1340
1341         status = g_io_channel_read_chars(chan, (gchar *) buf,
1342                                                 sizeof(buf), &len, NULL);
1343
1344         switch (status) {
1345         case G_IO_STATUS_NORMAL:
1346                 break;
1347         case G_IO_STATUS_AGAIN:
1348                 return TRUE;
1349         default:
1350                 return FALSE;
1351         }
1352
1353         rtnl_message(buf, len);
1354
1355         return TRUE;
1356 }
1357
1358 static int send_getlink(void)
1359 {
1360         struct rtnl_request *req;
1361
1362         DBG("");
1363
1364         req = g_try_malloc0(RTNL_REQUEST_SIZE);
1365         if (req == NULL)
1366                 return -ENOMEM;
1367
1368         req->hdr.nlmsg_len = RTNL_REQUEST_SIZE;
1369         req->hdr.nlmsg_type = RTM_GETLINK;
1370         req->hdr.nlmsg_flags = NLM_F_REQUEST | NLM_F_DUMP;
1371         req->hdr.nlmsg_pid = 0;
1372         req->hdr.nlmsg_seq = request_seq++;
1373         req->msg.rtgen_family = AF_INET;
1374
1375         return queue_request(req);
1376 }
1377
1378 static int send_getaddr(void)
1379 {
1380         struct rtnl_request *req;
1381
1382         DBG("");
1383
1384         req = g_try_malloc0(RTNL_REQUEST_SIZE);
1385         if (req == NULL)
1386                 return -ENOMEM;
1387
1388         req->hdr.nlmsg_len = RTNL_REQUEST_SIZE;
1389         req->hdr.nlmsg_type = RTM_GETADDR;
1390         req->hdr.nlmsg_flags = NLM_F_REQUEST | NLM_F_DUMP;
1391         req->hdr.nlmsg_pid = 0;
1392         req->hdr.nlmsg_seq = request_seq++;
1393         req->msg.rtgen_family = AF_INET;
1394
1395         return queue_request(req);
1396 }
1397
1398 static int send_getroute(void)
1399 {
1400         struct rtnl_request *req;
1401
1402         DBG("");
1403
1404         req = g_try_malloc0(RTNL_REQUEST_SIZE);
1405         if (req == NULL)
1406                 return -ENOMEM;
1407
1408         req->hdr.nlmsg_len = RTNL_REQUEST_SIZE;
1409         req->hdr.nlmsg_type = RTM_GETROUTE;
1410         req->hdr.nlmsg_flags = NLM_F_REQUEST | NLM_F_DUMP;
1411         req->hdr.nlmsg_pid = 0;
1412         req->hdr.nlmsg_seq = request_seq++;
1413         req->msg.rtgen_family = AF_INET;
1414
1415         return queue_request(req);
1416 }
1417
1418 static gboolean update_timeout_cb(gpointer user_data)
1419 {
1420         __connman_rtnl_request_update();
1421
1422         return TRUE;
1423 }
1424
1425 static void update_interval_callback(guint min)
1426 {
1427         if (update_timeout > 0)
1428                 g_source_remove(update_timeout);
1429
1430         if (min < G_MAXUINT) {
1431                 update_interval = min;
1432                 update_timeout = g_timeout_add_seconds(update_interval,
1433                                                 update_timeout_cb, NULL);
1434         } else {
1435                 update_timeout = 0;
1436                 update_interval = G_MAXUINT;
1437         }
1438 }
1439
1440 static gint compare_interval(gconstpointer a, gconstpointer b)
1441 {
1442         guint val_a = GPOINTER_TO_UINT(a);
1443         guint val_b = GPOINTER_TO_UINT(b);
1444
1445         return val_a - val_b;
1446 }
1447
1448 unsigned int __connman_rtnl_update_interval_add(unsigned int interval)
1449 {
1450         guint min;
1451
1452         if (interval == 0)
1453                 return 0;
1454
1455         update_list = g_slist_insert_sorted(update_list,
1456                         GUINT_TO_POINTER(interval), compare_interval);
1457
1458         min = GPOINTER_TO_UINT(g_slist_nth_data(update_list, 0));
1459         if (min < update_interval) {
1460                 update_interval_callback(min);
1461                 __connman_rtnl_request_update();
1462         }
1463
1464         return update_interval;
1465 }
1466
1467 unsigned int __connman_rtnl_update_interval_remove(unsigned int interval)
1468 {
1469         guint min = G_MAXUINT;
1470
1471         if (interval == 0)
1472                 return 0;
1473
1474         update_list = g_slist_remove(update_list, GINT_TO_POINTER(interval));
1475
1476         if (update_list != NULL)
1477                 min = GPOINTER_TO_UINT(g_slist_nth_data(update_list, 0));
1478
1479         if (min > update_interval)
1480                 update_interval_callback(min);
1481
1482         return min;
1483 }
1484
1485 int __connman_rtnl_request_update(void)
1486 {
1487         return send_getlink();
1488 }
1489
1490 int __connman_rtnl_init(void)
1491 {
1492         struct sockaddr_nl addr;
1493         int sk;
1494
1495         DBG("");
1496
1497         interface_list = g_hash_table_new_full(g_direct_hash, g_direct_equal,
1498                                                         NULL, free_interface);
1499
1500         sk = socket(PF_NETLINK, SOCK_DGRAM, NETLINK_ROUTE);
1501         if (sk < 0)
1502                 return -1;
1503
1504         memset(&addr, 0, sizeof(addr));
1505         addr.nl_family = AF_NETLINK;
1506         addr.nl_groups = RTMGRP_LINK | RTMGRP_IPV4_IFADDR | RTMGRP_IPV4_ROUTE |
1507                                 RTMGRP_IPV6_IFADDR | RTMGRP_IPV6_ROUTE |
1508                                 (1<<(RTNLGRP_ND_USEROPT-1));
1509
1510         if (bind(sk, (struct sockaddr *) &addr, sizeof(addr)) < 0) {
1511                 close(sk);
1512                 return -1;
1513         }
1514
1515         channel = g_io_channel_unix_new(sk);
1516         g_io_channel_set_close_on_unref(channel, TRUE);
1517
1518         g_io_add_watch(channel, G_IO_IN | G_IO_NVAL | G_IO_HUP | G_IO_ERR,
1519                                                         netlink_event, NULL);
1520
1521         return 0;
1522 }
1523
1524 void __connman_rtnl_start(void)
1525 {
1526         DBG("");
1527
1528         send_getlink();
1529         send_getaddr();
1530         send_getroute();
1531 }
1532
1533 void __connman_rtnl_cleanup(void)
1534 {
1535         GSList *list;
1536
1537         DBG("");
1538
1539         for (list = watch_list; list; list = list->next) {
1540                 struct watch_data *watch = list->data;
1541
1542                 DBG("removing watch %d", watch->id);
1543
1544                 g_free(watch);
1545                 list->data = NULL;
1546         }
1547
1548         g_slist_free(watch_list);
1549         watch_list = NULL;
1550
1551         g_slist_free(update_list);
1552         update_list = NULL;
1553
1554         for (list = request_list; list; list = list->next) {
1555                 struct rtnl_request *req = list->data;
1556
1557                 DBG("%s len %d type %d flags 0x%04x seq %d",
1558                                 type2string(req->hdr.nlmsg_type),
1559                                 req->hdr.nlmsg_len, req->hdr.nlmsg_type,
1560                                 req->hdr.nlmsg_flags, req->hdr.nlmsg_seq);
1561
1562                 g_free(req);
1563                 list->data = NULL;
1564         }
1565
1566         g_slist_free(request_list);
1567         request_list = NULL;
1568
1569         g_io_channel_shutdown(channel, TRUE, NULL);
1570         g_io_channel_unref(channel);
1571
1572         channel = NULL;
1573
1574         g_hash_table_destroy(interface_list);
1575 }