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 <errno.h>
  27 #include <stdio.h>
  28 #include <unistd.h>
  29 #include <string.h>
  30 #include <sys/socket.h>
  31 #include <sys/ioctl.h>
  32 #include <arpa/inet.h>
  33 #include <netinet/ether.h>
  34 #include <netinet/icmp6.h>
  35 #include <net/if_arp.h>
  36 #include <linux/if.h>
  37 #include <linux/netlink.h>
  38 #include <linux/rtnetlink.h>
  39 #include <linux/wireless.h>
  40
  41 #include <glib.h>
  42
  43 #include "connman.h"
  44
  45 #ifndef ARPHDR_PHONET_PIPE
  46 #define ARPHDR_PHONET_PIPE (821)
  47 #endif
  48
  49 #define print(arg...) do { if (0) connman_info(arg); } while (0)
  50 //#define print(arg...) connman_info(arg)
  51
  52 struct watch_data {
  53         unsigned int id;
  54         int index;
  55         connman_rtnl_link_cb_t newlink;
  56         void *user_data;
  57 };
  58
  59 static GSList *watch_list = NULL;
  60 static unsigned int watch_id = 0;
  61
  62 static GSList *update_list = NULL;
  63 static guint update_interval = G_MAXUINT;
  64 static guint update_timeout = 0;
  65
  66 struct interface_data {
  67         int index;
  68         char *name;
  69         char *ident;
  70         enum connman_service_type service_type;
  71         enum connman_device_type device_type;
  72 };
  73
  74 static GHashTable *interface_list = NULL;
  75
  76 static void free_interface(gpointer data)
  77 {
  78         struct interface_data *interface = data;
  79
  80         __connman_technology_remove_interface(interface->service_type,
  81                         interface->index, interface->name, interface->ident);
  82
  83         g_free(interface->ident);
  84         g_free(interface->name);
  85         g_free(interface);
  86 }
  87
  88 static connman_bool_t ether_blacklisted(const char *name)
  89 {
  90         if (name == NULL)
  91                 return TRUE;
  92
  93         /* virtual interface from VMware */
  94         if (g_str_has_prefix(name, "vmnet") == TRUE)
  95                 return TRUE;
  96
  97         /* virtual interface from VirtualBox */
  98         if (g_str_has_prefix(name, "vboxnet") == TRUE)
  99                 return TRUE;
 100
 101         /* virtual interface from Virtual Machine Manager */
 102         if (g_str_has_prefix(name, "virbr") == TRUE)
 103                 return TRUE;
 104
 105         return FALSE;
 106 }
 107
 108 static connman_bool_t wext_interface(char *ifname)
 109 {
 110         struct iwreq wrq;
 111         int fd, err;
 112
 113         fd = socket(PF_INET, SOCK_DGRAM | SOCK_CLOEXEC, 0);
 114         if (fd < 0)
 115                 return FALSE;
 116
 117         memset(&wrq, 0, sizeof(wrq));
 118         strncpy(wrq.ifr_name, ifname, IFNAMSIZ);
 119
 120         err = ioctl(fd, SIOCGIWNAME, &wrq);
 121
 122         close(fd);
 123
 124         if (err < 0)
 125                 return FALSE;
 126
 127         return TRUE;
 128 }
 129
 130 static void read_uevent(struct interface_data *interface)
 131 {
 132         char *filename, line[128];
 133         connman_bool_t found_devtype;
 134         FILE *f;
 135
 136         if (ether_blacklisted(interface->name) == TRUE) {
 137                 interface->service_type = CONNMAN_SERVICE_TYPE_UNKNOWN;
 138                 interface->device_type = CONNMAN_DEVICE_TYPE_UNKNOWN;
 139         } else {
 140                 interface->service_type = CONNMAN_SERVICE_TYPE_ETHERNET;
 141                 interface->device_type = CONNMAN_DEVICE_TYPE_ETHERNET;
 142         }
 143
 144         filename = g_strdup_printf("/sys/class/net/%s/uevent",
 145                                                 interface->name);
 146
 147         f = fopen(filename, "re");
 148
 149         g_free(filename);
 150
 151         if (f == NULL)
 152                 return;
 153
 154         found_devtype = FALSE;
 155         while (fgets(line, sizeof(line), f)) {
 156                 char *pos;
 157
 158                 pos = strchr(line, '\n');
 159                 if (pos == NULL)
 160                         continue;
 161                 pos[0] = '\0';
 162
 163                 if (strncmp(line, "DEVTYPE=", 8) != 0)
 164                         continue;
 165
 166                 found_devtype = TRUE;
 167
 168                 if (strcmp(line + 8, "wlan") == 0) {
 169                         interface->service_type = CONNMAN_SERVICE_TYPE_WIFI;
 170                         interface->device_type = CONNMAN_DEVICE_TYPE_WIFI;
 171                 } else if (strcmp(line + 8, "wwan") == 0) {
 172                         interface->service_type = CONNMAN_SERVICE_TYPE_CELLULAR;
 173                         interface->device_type = CONNMAN_DEVICE_TYPE_CELLULAR;
 174                 } else if (strcmp(line + 8, "bluetooth") == 0) {
 175                         interface->service_type = CONNMAN_SERVICE_TYPE_BLUETOOTH;
 176                         interface->device_type = CONNMAN_DEVICE_TYPE_BLUETOOTH;
 177                 } else if (strcmp(line + 8, "wimax") == 0) {
 178                         interface->service_type = CONNMAN_SERVICE_TYPE_WIMAX;
 179                         interface->device_type = CONNMAN_DEVICE_TYPE_WIMAX;
 180                 } else if (strcmp(line + 8, "gadget") == 0) {
 181                         interface->service_type = CONNMAN_SERVICE_TYPE_GADGET;
 182                         interface->device_type = CONNMAN_DEVICE_TYPE_GADGET;
 183
 184                 } else {
 185                         interface->service_type = CONNMAN_SERVICE_TYPE_UNKNOWN;
 186                         interface->device_type = CONNMAN_DEVICE_TYPE_UNKNOWN;
 187                 }
 188         }
 189
 190         fclose(f);
 191
 192         if (found_devtype)
 193                 return;
 194
 195         /* We haven't got a DEVTYPE, let's check if it's a wireless device */
 196         if (wext_interface(interface->name)) {
 197                 interface->service_type = CONNMAN_SERVICE_TYPE_WIFI;
 198                 interface->device_type = CONNMAN_DEVICE_TYPE_WIFI;
 199
 200                 connman_error("%s runs an unsupported 802.11 driver",
 201                                 interface->name);
 202         }
 203 }
 204
 205 enum connman_device_type __connman_rtnl_get_device_type(int index)
 206 {
 207         struct interface_data *interface;
 208
 209         interface = g_hash_table_lookup(interface_list,
 210                                         GINT_TO_POINTER(index));
 211         if (interface == NULL)
 212                 return CONNMAN_DEVICE_TYPE_UNKNOWN;
 213
 214         return interface->device_type;
 215 }
 216
 217 /**
 218  * connman_rtnl_add_newlink_watch:
 219  * @index: network device index
 220  * @callback: callback function
 221  * @user_data: callback data;
 222  *
 223  * Add a new RTNL watch for newlink events
 224  *
 225  * Returns: %0 on failure and a unique id on success
 226  */
 227 unsigned int connman_rtnl_add_newlink_watch(int index,
 228                         connman_rtnl_link_cb_t callback, void *user_data)
 229 {
 230         struct watch_data *watch;
 231
 232         watch = g_try_new0(struct watch_data, 1);
 233         if (watch == NULL)
 234                 return 0;
 235
 236         watch->id = ++watch_id;
 237         watch->index = index;
 238
 239         watch->newlink = callback;
 240         watch->user_data = user_data;
 241
 242         watch_list = g_slist_prepend(watch_list, watch);
 243
 244         DBG("id %d", watch->id);
 245
 246         if (callback) {
 247                 unsigned int flags = __connman_ipconfig_get_flags_from_index(index);
 248
 249                 if (flags > 0)
 250                         callback(flags, 0, user_data);
 251         }
 252
 253         return watch->id;
 254 }
 255
 256 /**
 257  * connman_rtnl_remove_watch:
 258  * @id: watch identifier
 259  *
 260  * Remove the RTNL watch for the identifier
 261  */
 262 void connman_rtnl_remove_watch(unsigned int id)
 263 {
 264         GSList *list;
 265
 266         DBG("id %d", id);
 267
 268         if (id == 0)
 269                 return;
 270
 271         for (list = watch_list; list; list = list->next) {
 272                 struct watch_data *watch = list->data;
 273
 274                 if (watch->id  == id) {
 275                         watch_list = g_slist_remove(watch_list, watch);
 276                         g_free(watch);
 277                         break;
 278                 }
 279         }
 280 }
 281
 282 static void trigger_rtnl(int index, void *user_data)
 283 {
 284         struct connman_rtnl *rtnl = user_data;
 285
 286         if (rtnl->newlink) {
 287                 unsigned short type = __connman_ipconfig_get_type_from_index(index);
 288                 unsigned int flags = __connman_ipconfig_get_flags_from_index(index);
 289
 290                 rtnl->newlink(type, index, flags, 0);
 291         }
 292
 293         if (rtnl->newgateway) {
 294                 const char *gateway = __connman_ipconfig_get_gateway_from_index(index);
 295
 296                 if (gateway != NULL)
 297                         rtnl->newgateway(index, gateway);
 298         }
 299 }
 300
 301 static GSList *rtnl_list = NULL;
 302
 303 static gint compare_priority(gconstpointer a, gconstpointer b)
 304 {
 305         const struct connman_rtnl *rtnl1 = a;
 306         const struct connman_rtnl *rtnl2 = b;
 307
 308         return rtnl2->priority - rtnl1->priority;
 309 }
 310
 311 /**
 312  * connman_rtnl_register:
 313  * @rtnl: RTNL module
 314  *
 315  * Register a new RTNL module
 316  *
 317  * Returns: %0 on success
 318  */
 319 int connman_rtnl_register(struct connman_rtnl *rtnl)
 320 {
 321         DBG("rtnl %p name %s", rtnl, rtnl->name);
 322
 323         rtnl_list = g_slist_insert_sorted(rtnl_list, rtnl,
 324                                                         compare_priority);
 325
 326         __connman_ipconfig_foreach(trigger_rtnl, rtnl);
 327
 328         return 0;
 329 }
 330
 331 /**
 332  * connman_rtnl_unregister:
 333  * @rtnl: RTNL module
 334  *
 335  * Remove a previously registered RTNL module
 336  */
 337 void connman_rtnl_unregister(struct connman_rtnl *rtnl)
 338 {
 339         DBG("rtnl %p name %s", rtnl, rtnl->name);
 340
 341         rtnl_list = g_slist_remove(rtnl_list, rtnl);
 342 }
 343
 344 static const char *operstate2str(unsigned char operstate)
 345 {
 346         switch (operstate) {
 347         case IF_OPER_UNKNOWN:
 348                 return "UNKNOWN";
 349         case IF_OPER_NOTPRESENT:
 350                 return "NOT-PRESENT";
 351         case IF_OPER_DOWN:
 352                 return "DOWN";
 353         case IF_OPER_LOWERLAYERDOWN:
 354                 return "LOWER-LAYER-DOWN";
 355         case IF_OPER_TESTING:
 356                 return "TESTING";
 357         case IF_OPER_DORMANT:
 358                 return "DORMANT";
 359         case IF_OPER_UP:
 360                 return "UP";
 361         }
 362
 363         return "";
 364 }
 365
 366 static void extract_link(struct ifinfomsg *msg, int bytes,
 367                                 struct ether_addr *address, const char **ifname,
 368                                 unsigned int *mtu, unsigned char *operstate,
 369                                                 struct rtnl_link_stats *stats)
 370 {
 371         struct rtattr *attr;
 372
 373         for (attr = IFLA_RTA(msg); RTA_OK(attr, bytes);
 374                                         attr = RTA_NEXT(attr, bytes)) {
 375                 switch (attr->rta_type) {
 376                 case IFLA_ADDRESS:
 377                         if (address != NULL)
 378                                 memcpy(address, RTA_DATA(attr), ETH_ALEN);
 379                         break;
 380                 case IFLA_IFNAME:
 381                         if (ifname != NULL)
 382                                 *ifname = RTA_DATA(attr);
 383                         break;
 384                 case IFLA_MTU:
 385                         if (mtu != NULL)
 386                                 *mtu = *((unsigned int *) RTA_DATA(attr));
 387                         break;
 388                 case IFLA_STATS:
 389                         if (stats != NULL)
 390                                 memcpy(stats, RTA_DATA(attr),
 391                                         sizeof(struct rtnl_link_stats));
 392                         break;
 393                 case IFLA_OPERSTATE:
 394                         if (operstate != NULL)
 395                                 *operstate = *((unsigned char *) RTA_DATA(attr));
 396                         break;
 397                 case IFLA_LINKMODE:
 398                         break;
 399                 }
 400         }
 401 }
 402
 403 static void process_newlink(unsigned short type, int index, unsigned flags,
 404                         unsigned change, struct ifinfomsg *msg, int bytes)
 405 {
 406         struct ether_addr address = {{ 0, 0, 0, 0, 0, 0 }};
 407         struct ether_addr compare = {{ 0, 0, 0, 0, 0, 0 }};
 408         struct rtnl_link_stats stats;
 409         unsigned char operstate = 0xff;
 410         struct interface_data *interface;
 411         const char *ifname = NULL;
 412         unsigned int mtu = 0;
 413         char ident[13], str[18];
 414         GSList *list;
 415
 416         memset(&stats, 0, sizeof(stats));
 417         extract_link(msg, bytes, &address, &ifname, &mtu, &operstate, &stats);
 418
 419         snprintf(ident, 13, "%02x%02x%02x%02x%02x%02x",
 420                                                 address.ether_addr_octet[0],
 421                                                 address.ether_addr_octet[1],
 422                                                 address.ether_addr_octet[2],
 423                                                 address.ether_addr_octet[3],
 424                                                 address.ether_addr_octet[4],
 425                                                 address.ether_addr_octet[5]);
 426
 427         snprintf(str, 18, "%02X:%02X:%02X:%02X:%02X:%02X",
 428                                                 address.ether_addr_octet[0],
 429                                                 address.ether_addr_octet[1],
 430                                                 address.ether_addr_octet[2],
 431                                                 address.ether_addr_octet[3],
 432                                                 address.ether_addr_octet[4],
 433                                                 address.ether_addr_octet[5]);
 434
 435         switch (type) {
 436         case ARPHRD_ETHER:
 437         case ARPHRD_LOOPBACK:
 438         case ARPHDR_PHONET_PIPE:
 439         case ARPHRD_NONE:
 440                 __connman_ipconfig_newlink(index, type, flags,
 441                                                         str, mtu, &stats);
 442                 break;
 443         }
 444
 445         if (memcmp(&address, &compare, ETH_ALEN) != 0)
 446                 connman_info("%s {newlink} index %d address %s mtu %u",
 447                                                 ifname, index, str, mtu);
 448
 449         if (operstate != 0xff)
 450                 connman_info("%s {newlink} index %d operstate %u <%s>",
 451                                                 ifname, index, operstate,
 452                                                 operstate2str(operstate));
 453
 454         interface = g_hash_table_lookup(interface_list, GINT_TO_POINTER(index));
 455         if (interface == NULL) {
 456                 interface = g_new0(struct interface_data, 1);
 457                 interface->index = index;
 458                 interface->name = g_strdup(ifname);
 459                 interface->ident = g_strdup(ident);
 460
 461                 g_hash_table_insert(interface_list,
 462                                         GINT_TO_POINTER(index), interface);
 463
 464                 if (type == ARPHRD_ETHER)
 465                         read_uevent(interface);
 466
 467                 __connman_technology_add_interface(interface->service_type,
 468                         interface->index, interface->name, interface->ident);
 469         }
 470
 471         for (list = rtnl_list; list; list = list->next) {
 472                 struct connman_rtnl *rtnl = list->data;
 473
 474                 if (rtnl->newlink)
 475                         rtnl->newlink(type, index, flags, change);
 476         }
 477
 478         for (list = watch_list; list; list = list->next) {
 479                 struct watch_data *watch = list->data;
 480
 481                 if (watch->index != index)
 482                         continue;
 483
 484                 if (watch->newlink)
 485                         watch->newlink(flags, change, watch->user_data);
 486         }
 487 }
 488
 489 static void process_dellink(unsigned short type, int index, unsigned flags,
 490                         unsigned change, struct ifinfomsg *msg, int bytes)
 491 {
 492         struct rtnl_link_stats stats;
 493         unsigned char operstate = 0xff;
 494         const char *ifname = NULL;
 495         GSList *list;
 496
 497         memset(&stats, 0, sizeof(stats));
 498         extract_link(msg, bytes, NULL, &ifname, NULL, &operstate, &stats);
 499
 500         if (operstate != 0xff)
 501                 connman_info("%s {dellink} index %d operstate %u <%s>",
 502                                                 ifname, index, operstate,
 503                                                 operstate2str(operstate));
 504
 505         for (list = rtnl_list; list; list = list->next) {
 506                 struct connman_rtnl *rtnl = list->data;
 507
 508                 if (rtnl->dellink)
 509                         rtnl->dellink(type, index, flags, change);
 510         }
 511
 512         switch (type) {
 513         case ARPHRD_ETHER:
 514         case ARPHRD_LOOPBACK:
 515         case ARPHRD_NONE:
 516                 __connman_ipconfig_dellink(index, &stats);
 517                 break;
 518         }
 519
 520         g_hash_table_remove(interface_list, GINT_TO_POINTER(index));
 521 }
 522
 523 static void extract_ipv4_addr(struct ifaddrmsg *msg, int bytes,
 524                                                 const char **label,
 525                                                 struct in_addr *local,
 526                                                 struct in_addr *address,
 527                                                 struct in_addr *broadcast)
 528 {
 529         struct rtattr *attr;
 530
 531         for (attr = IFA_RTA(msg); RTA_OK(attr, bytes);
 532                                         attr = RTA_NEXT(attr, bytes)) {
 533                 switch (attr->rta_type) {
 534                 case IFA_ADDRESS:
 535                         if (address != NULL)
 536                                 *address = *((struct in_addr *) RTA_DATA(attr));
 537                         break;
 538                 case IFA_LOCAL:
 539                         if (local != NULL)
 540                                 *local = *((struct in_addr *) RTA_DATA(attr));
 541                         break;
 542                 case IFA_BROADCAST:
 543                         if (broadcast != NULL)
 544                                 *broadcast = *((struct in_addr *) RTA_DATA(attr));
 545                         break;
 546                 case IFA_LABEL:
 547                         if (label != NULL)
 548                                 *label = RTA_DATA(attr);
 549                         break;
 550                 }
 551         }
 552 }
 553
 554 static void extract_ipv6_addr(struct ifaddrmsg *msg, int bytes,
 555                                                 struct in6_addr *addr,
 556                                                 struct in6_addr *local)
 557 {
 558         struct rtattr *attr;
 559
 560         for (attr = IFA_RTA(msg); RTA_OK(attr, bytes);
 561                                         attr = RTA_NEXT(attr, bytes)) {
 562                 switch (attr->rta_type) {
 563                 case IFA_ADDRESS:
 564                         if (addr != NULL)
 565                                 *addr = *((struct in6_addr *) RTA_DATA(attr));
 566                         break;
 567                 case IFA_LOCAL:
 568                         if (local != NULL)
 569                                 *local = *((struct in6_addr *) RTA_DATA(attr));
 570                         break;
 571                 }
 572         }
 573 }
 574
 575 static void process_newaddr(unsigned char family, unsigned char prefixlen,
 576                                 int index, struct ifaddrmsg *msg, int bytes)
 577 {
 578         const char *label = NULL;
 579         void *src;
 580         char ip_string[INET6_ADDRSTRLEN];
 581
 582         if (family == AF_INET) {
 583                 struct in_addr ipv4_addr = { INADDR_ANY };
 584
 585                 extract_ipv4_addr(msg, bytes, &label, &ipv4_addr, NULL, NULL);
 586                 src = &ipv4_addr;
 587         } else if (family == AF_INET6) {
 588                 struct in6_addr ipv6_address, ipv6_local;
 589
 590                 extract_ipv6_addr(msg, bytes, &ipv6_address, &ipv6_local);
 591                 if (IN6_IS_ADDR_LINKLOCAL(&ipv6_address))
 592                         return;
 593
 594                 src = &ipv6_address;
 595         } else {
 596                 return;
 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         if (family == AF_INET6) {
 606                 /*
 607                  * Re-create RDNSS configured servers if there are any
 608                  * for this interface. This is done because we might
 609                  * have now properly configured interface with proper
 610                  * autoconfigured address.
 611                  */
 612                 char *interface = connman_inet_ifname(index);
 613
 614                 __connman_resolver_redo_servers(interface);
 615
 616                 g_free(interface);
 617         }
 618 }
 619
 620 static void process_deladdr(unsigned char family, unsigned char prefixlen,
 621                                 int index, struct ifaddrmsg *msg, int bytes)
 622 {
 623         const char *label = NULL;
 624         void *src;
 625         char ip_string[INET6_ADDRSTRLEN];
 626
 627         if (family == AF_INET) {
 628                 struct in_addr ipv4_addr = { INADDR_ANY };
 629
 630                 extract_ipv4_addr(msg, bytes, &label, &ipv4_addr, NULL, NULL);
 631                 src = &ipv4_addr;
 632         } else if (family == AF_INET6) {
 633                 struct in6_addr ipv6_address, ipv6_local;
 634
 635                 extract_ipv6_addr(msg, bytes, &ipv6_address, &ipv6_local);
 636                 if (IN6_IS_ADDR_LINKLOCAL(&ipv6_address))
 637                         return;
 638
 639                 src = &ipv6_address;
 640         } else {
 641                 return;
 642         }
 643
 644         if (inet_ntop(family, src, ip_string, INET6_ADDRSTRLEN) == NULL)
 645                 return;
 646
 647         __connman_ipconfig_deladdr(index, family, label,
 648                                         prefixlen, ip_string);
 649 }
 650
 651 static void extract_ipv4_route(struct rtmsg *msg, int bytes, int *index,
 652                                                 struct in_addr *dst,
 653                                                 struct in_addr *gateway)
 654 {
 655         struct rtattr *attr;
 656
 657         for (attr = RTM_RTA(msg); RTA_OK(attr, bytes);
 658                                         attr = RTA_NEXT(attr, bytes)) {
 659                 switch (attr->rta_type) {
 660                 case RTA_DST:
 661                         if (dst != NULL)
 662                                 *dst = *((struct in_addr *) RTA_DATA(attr));
 663                         break;
 664                 case RTA_GATEWAY:
 665                         if (gateway != NULL)
 666                                 *gateway = *((struct in_addr *) RTA_DATA(attr));
 667                         break;
 668                 case RTA_OIF:
 669                         if (index != NULL)
 670                                 *index = *((int *) RTA_DATA(attr));
 671                         break;
 672                 }
 673         }
 674 }
 675
 676 static void extract_ipv6_route(struct rtmsg *msg, int bytes, int *index,
 677                                                 struct in6_addr *dst,
 678                                                 struct in6_addr *gateway)
 679 {
 680         struct rtattr *attr;
 681
 682         for (attr = RTM_RTA(msg); RTA_OK(attr, bytes);
 683                                         attr = RTA_NEXT(attr, bytes)) {
 684                 switch (attr->rta_type) {
 685                 case RTA_DST:
 686                         if (dst != NULL)
 687                                 *dst = *((struct in6_addr *) RTA_DATA(attr));
 688                         break;
 689                 case RTA_GATEWAY:
 690                         if (gateway != NULL)
 691                                 *gateway =
 692                                         *((struct in6_addr *) RTA_DATA(attr));
 693                         break;
 694                 case RTA_OIF:
 695                         if (index != NULL)
 696                                 *index = *((int *) RTA_DATA(attr));
 697                         break;
 698                 }
 699         }
 700 }
 701
 702 static void process_newroute(unsigned char family, unsigned char scope,
 703                                                 struct rtmsg *msg, int bytes)
 704 {
 705         GSList *list;
 706         char dststr[INET6_ADDRSTRLEN], gatewaystr[INET6_ADDRSTRLEN];
 707         int index = -1;
 708
 709         if (family == AF_INET) {
 710                 struct in_addr dst = { INADDR_ANY }, gateway = { INADDR_ANY };
 711
 712                 extract_ipv4_route(msg, bytes, &index, &dst, &gateway);
 713
 714                 inet_ntop(family, &dst, dststr, sizeof(dststr));
 715                 inet_ntop(family, &gateway, gatewaystr, sizeof(gatewaystr));
 716
 717                 __connman_ipconfig_newroute(index, family, scope, dststr,
 718                                                                 gatewaystr);
 719
 720                 /* skip host specific routes */
 721                 if (scope != RT_SCOPE_UNIVERSE &&
 722                         !(scope == RT_SCOPE_LINK && dst.s_addr == INADDR_ANY))
 723                         return;
 724
 725                 if (dst.s_addr != INADDR_ANY)
 726                         return;
 727
 728         } else if (family == AF_INET6) {
 729                 struct in6_addr dst = IN6ADDR_ANY_INIT,
 730                                 gateway = IN6ADDR_ANY_INIT;
 731
 732                 extract_ipv6_route(msg, bytes, &index, &dst, &gateway);
 733
 734                 inet_ntop(family, &dst, dststr, sizeof(dststr));
 735                 inet_ntop(family, &gateway, gatewaystr, sizeof(gatewaystr));
 736
 737                 __connman_ipconfig_newroute(index, family, scope, dststr,
 738                                                                 gatewaystr);
 739
 740                 /* skip host specific routes */
 741                 if (scope != RT_SCOPE_UNIVERSE &&
 742                         !(scope == RT_SCOPE_LINK &&
 743                                 IN6_IS_ADDR_UNSPECIFIED(&dst)))
 744                         return;
 745
 746                 if (!IN6_IS_ADDR_UNSPECIFIED(&dst))
 747                         return;
 748         } else
 749                 return;
 750
 751         for (list = rtnl_list; list; list = list->next) {
 752                 struct connman_rtnl *rtnl = list->data;
 753
 754                 if (rtnl->newgateway)
 755                         rtnl->newgateway(index, gatewaystr);
 756         }
 757 }
 758
 759 static void process_delroute(unsigned char family, unsigned char scope,
 760                                                 struct rtmsg *msg, int bytes)
 761 {
 762         GSList *list;
 763         char dststr[INET6_ADDRSTRLEN], gatewaystr[INET6_ADDRSTRLEN];
 764         int index = -1;
 765
 766         if (family == AF_INET) {
 767                 struct in_addr dst = { INADDR_ANY }, gateway = { INADDR_ANY };
 768
 769                 extract_ipv4_route(msg, bytes, &index, &dst, &gateway);
 770
 771                 inet_ntop(family, &dst, dststr, sizeof(dststr));
 772                 inet_ntop(family, &gateway, gatewaystr, sizeof(gatewaystr));
 773
 774                 __connman_ipconfig_delroute(index, family, scope, dststr,
 775                                                                 gatewaystr);
 776
 777                 /* skip host specific routes */
 778                 if (scope != RT_SCOPE_UNIVERSE &&
 779                         !(scope == RT_SCOPE_LINK && dst.s_addr == INADDR_ANY))
 780                         return;
 781
 782                 if (dst.s_addr != INADDR_ANY)
 783                         return;
 784
 785         }  else if (family == AF_INET6) {
 786                 struct in6_addr dst = IN6ADDR_ANY_INIT,
 787                                 gateway = IN6ADDR_ANY_INIT;
 788
 789                 extract_ipv6_route(msg, bytes, &index, &dst, &gateway);
 790
 791                 inet_ntop(family, &dst, dststr, sizeof(dststr));
 792                 inet_ntop(family, &gateway, gatewaystr, sizeof(gatewaystr));
 793
 794                 __connman_ipconfig_delroute(index, family, scope, dststr,
 795                                                 gatewaystr);
 796
 797                 /* skip host specific routes */
 798                 if (scope != RT_SCOPE_UNIVERSE &&
 799                         !(scope == RT_SCOPE_LINK &&
 800                                 IN6_IS_ADDR_UNSPECIFIED(&dst)))
 801                         return;
 802
 803                 if (!IN6_IS_ADDR_UNSPECIFIED(&dst))
 804                         return;
 805         } else
 806                 return;
 807
 808         for (list = rtnl_list; list; list = list->next) {
 809                 struct connman_rtnl *rtnl = list->data;
 810
 811                 if (rtnl->delgateway)
 812                         rtnl->delgateway(index, gatewaystr);
 813         }
 814 }
 815
 816 static inline void print_ether(struct rtattr *attr, const char *name)
 817 {
 818         int len = (int) RTA_PAYLOAD(attr);
 819
 820         if (len == ETH_ALEN) {
 821                 struct ether_addr eth;
 822                 memcpy(&eth, RTA_DATA(attr), ETH_ALEN);
 823                 print("  attr %s (len %d) %s\n", name, len, ether_ntoa(&eth));
 824         } else
 825                 print("  attr %s (len %d)\n", name, len);
 826 }
 827
 828 static inline void print_inet(struct rtattr *attr, const char *name,
 829                                                         unsigned char family)
 830 {
 831         int len = (int) RTA_PAYLOAD(attr);
 832
 833         if (family == AF_INET && len == sizeof(struct in_addr)) {
 834                 struct in_addr addr;
 835                 addr = *((struct in_addr *) RTA_DATA(attr));
 836                 print("  attr %s (len %d) %s\n", name, len, inet_ntoa(addr));
 837         } else
 838                 print("  attr %s (len %d)\n", name, len);
 839 }
 840
 841 static inline void print_string(struct rtattr *attr, const char *name)
 842 {
 843         print("  attr %s (len %d) %s\n", name, (int) RTA_PAYLOAD(attr),
 844                                                 (char *) RTA_DATA(attr));
 845 }
 846
 847 static inline void print_byte(struct rtattr *attr, const char *name)
 848 {
 849         print("  attr %s (len %d) 0x%02x\n", name, (int) RTA_PAYLOAD(attr),
 850                                         *((unsigned char *) RTA_DATA(attr)));
 851 }
 852
 853 static inline void print_integer(struct rtattr *attr, const char *name)
 854 {
 855         print("  attr %s (len %d) %d\n", name, (int) RTA_PAYLOAD(attr),
 856                                                 *((int *) RTA_DATA(attr)));
 857 }
 858
 859 static inline void print_attr(struct rtattr *attr, const char *name)
 860 {
 861         int len = (int) RTA_PAYLOAD(attr);
 862
 863         if (name && len > 0)
 864                 print("  attr %s (len %d)\n", name, len);
 865         else
 866                 print("  attr %d (len %d)\n", attr->rta_type, len);
 867 }
 868
 869 static void rtnl_link(struct nlmsghdr *hdr)
 870 {
 871         struct ifinfomsg *msg;
 872         struct rtattr *attr;
 873         int bytes;
 874
 875         msg = (struct ifinfomsg *) NLMSG_DATA(hdr);
 876         bytes = IFLA_PAYLOAD(hdr);
 877
 878         print("ifi_index %d ifi_flags 0x%04x", msg->ifi_index, msg->ifi_flags);
 879
 880         for (attr = IFLA_RTA(msg); RTA_OK(attr, bytes);
 881                                         attr = RTA_NEXT(attr, bytes)) {
 882                 switch (attr->rta_type) {
 883                 case IFLA_ADDRESS:
 884                         print_ether(attr, "address");
 885                         break;
 886                 case IFLA_BROADCAST:
 887                         print_ether(attr, "broadcast");
 888                         break;
 889                 case IFLA_IFNAME:
 890                         print_string(attr, "ifname");
 891                         break;
 892                 case IFLA_MTU:
 893                         print_integer(attr, "mtu");
 894                         break;
 895                 case IFLA_LINK:
 896                         print_attr(attr, "link");
 897                         break;
 898                 case IFLA_QDISC:
 899                         print_attr(attr, "qdisc");
 900                         break;
 901                 case IFLA_STATS:
 902                         print_attr(attr, "stats");
 903                         break;
 904                 case IFLA_COST:
 905                         print_attr(attr, "cost");
 906                         break;
 907                 case IFLA_PRIORITY:
 908                         print_attr(attr, "priority");
 909                         break;
 910                 case IFLA_MASTER:
 911                         print_attr(attr, "master");
 912                         break;
 913                 case IFLA_WIRELESS:
 914                         print_attr(attr, "wireless");
 915                         break;
 916                 case IFLA_PROTINFO:
 917                         print_attr(attr, "protinfo");
 918                         break;
 919                 case IFLA_TXQLEN:
 920                         print_integer(attr, "txqlen");
 921                         break;
 922                 case IFLA_MAP:
 923                         print_attr(attr, "map");
 924                         break;
 925                 case IFLA_WEIGHT:
 926                         print_attr(attr, "weight");
 927                         break;
 928                 case IFLA_OPERSTATE:
 929                         print_byte(attr, "operstate");
 930                         break;
 931                 case IFLA_LINKMODE:
 932                         print_byte(attr, "linkmode");
 933                         break;
 934                 default:
 935                         print_attr(attr, NULL);
 936                         break;
 937                 }
 938         }
 939 }
 940
 941 static void rtnl_newlink(struct nlmsghdr *hdr)
 942 {
 943         struct ifinfomsg *msg = (struct ifinfomsg *) NLMSG_DATA(hdr);
 944
 945         rtnl_link(hdr);
 946
 947         process_newlink(msg->ifi_type, msg->ifi_index, msg->ifi_flags,
 948                                 msg->ifi_change, msg, IFA_PAYLOAD(hdr));
 949 }
 950
 951 static void rtnl_dellink(struct nlmsghdr *hdr)
 952 {
 953         struct ifinfomsg *msg = (struct ifinfomsg *) NLMSG_DATA(hdr);
 954
 955         rtnl_link(hdr);
 956
 957         process_dellink(msg->ifi_type, msg->ifi_index, msg->ifi_flags,
 958                                 msg->ifi_change, msg, IFA_PAYLOAD(hdr));
 959 }
 960
 961 static void rtnl_addr(struct nlmsghdr *hdr)
 962 {
 963         struct ifaddrmsg *msg;
 964         struct rtattr *attr;
 965         int bytes;
 966
 967         msg = (struct ifaddrmsg *) NLMSG_DATA(hdr);
 968         bytes = IFA_PAYLOAD(hdr);
 969
 970         print("ifa_family %d ifa_index %d", msg->ifa_family, msg->ifa_index);
 971
 972         for (attr = IFA_RTA(msg); RTA_OK(attr, bytes);
 973                                         attr = RTA_NEXT(attr, bytes)) {
 974                 switch (attr->rta_type) {
 975                 case IFA_ADDRESS:
 976                         print_inet(attr, "address", msg->ifa_family);
 977                         break;
 978                 case IFA_LOCAL:
 979                         print_inet(attr, "local", msg->ifa_family);
 980                         break;
 981                 case IFA_LABEL:
 982                         print_string(attr, "label");
 983                         break;
 984                 case IFA_BROADCAST:
 985                         print_inet(attr, "broadcast", msg->ifa_family);
 986                         break;
 987                 case IFA_ANYCAST:
 988                         print_attr(attr, "anycast");
 989                         break;
 990                 case IFA_CACHEINFO:
 991                         print_attr(attr, "cacheinfo");
 992                         break;
 993                 case IFA_MULTICAST:
 994                         print_attr(attr, "multicast");
 995                         break;
 996                 default:
 997                         print_attr(attr, NULL);
 998                         break;
 999                 }
1000         }
1001 }
1002
1003 static void rtnl_newaddr(struct nlmsghdr *hdr)
1004 {
1005         struct ifaddrmsg *msg = (struct ifaddrmsg *) NLMSG_DATA(hdr);
1006
1007         rtnl_addr(hdr);
1008
1009         process_newaddr(msg->ifa_family, msg->ifa_prefixlen, msg->ifa_index,
1010                                                 msg, IFA_PAYLOAD(hdr));
1011 }
1012
1013 static void rtnl_deladdr(struct nlmsghdr *hdr)
1014 {
1015         struct ifaddrmsg *msg = (struct ifaddrmsg *) NLMSG_DATA(hdr);
1016
1017         rtnl_addr(hdr);
1018
1019         process_deladdr(msg->ifa_family, msg->ifa_prefixlen, msg->ifa_index,
1020                                                 msg, IFA_PAYLOAD(hdr));
1021 }
1022
1023 static void rtnl_route(struct nlmsghdr *hdr)
1024 {
1025         struct rtmsg *msg;
1026         struct rtattr *attr;
1027         int bytes;
1028
1029         msg = (struct rtmsg *) NLMSG_DATA(hdr);
1030         bytes = RTM_PAYLOAD(hdr);
1031
1032         print("rtm_family %d rtm_table %d rtm_protocol %d",
1033                         msg->rtm_family, msg->rtm_table, msg->rtm_protocol);
1034         print("rtm_scope %d rtm_type %d rtm_flags 0x%04x",
1035                                 msg->rtm_scope, msg->rtm_type, msg->rtm_flags);
1036
1037         for (attr = RTM_RTA(msg); RTA_OK(attr, bytes);
1038                                         attr = RTA_NEXT(attr, bytes)) {
1039                 switch (attr->rta_type) {
1040                 case RTA_DST:
1041                         print_inet(attr, "dst", msg->rtm_family);
1042                         break;
1043                 case RTA_SRC:
1044                         print_inet(attr, "src", msg->rtm_family);
1045                         break;
1046                 case RTA_IIF:
1047                         print_string(attr, "iif");
1048                         break;
1049                 case RTA_OIF:
1050                         print_integer(attr, "oif");
1051                         break;
1052                 case RTA_GATEWAY:
1053                         print_inet(attr, "gateway", msg->rtm_family);
1054                         break;
1055                 case RTA_PRIORITY:
1056                         print_attr(attr, "priority");
1057                         break;
1058                 case RTA_PREFSRC:
1059                         print_inet(attr, "prefsrc", msg->rtm_family);
1060                         break;
1061                 case RTA_METRICS:
1062                         print_attr(attr, "metrics");
1063                         break;
1064                 case RTA_TABLE:
1065                         print_integer(attr, "table");
1066                         break;
1067                 default:
1068                         print_attr(attr, NULL);
1069                         break;
1070                 }
1071         }
1072 }
1073
1074 static connman_bool_t is_route_rtmsg(struct rtmsg *msg)
1075 {
1076
1077         if (msg->rtm_table != RT_TABLE_MAIN)
1078                 return FALSE;
1079
1080         if (msg->rtm_protocol != RTPROT_BOOT &&
1081                         msg->rtm_protocol != RTPROT_KERNEL)
1082                 return FALSE;
1083
1084         if (msg->rtm_type != RTN_UNICAST)
1085                 return FALSE;
1086
1087         return TRUE;
1088 }
1089
1090 static void rtnl_newroute(struct nlmsghdr *hdr)
1091 {
1092         struct rtmsg *msg = (struct rtmsg *) NLMSG_DATA(hdr);
1093
1094         rtnl_route(hdr);
1095
1096         if (is_route_rtmsg(msg))
1097                 process_newroute(msg->rtm_family, msg->rtm_scope,
1098                                                 msg, RTM_PAYLOAD(hdr));
1099 }
1100
1101 static void rtnl_delroute(struct nlmsghdr *hdr)
1102 {
1103         struct rtmsg *msg = (struct rtmsg *) NLMSG_DATA(hdr);
1104
1105         rtnl_route(hdr);
1106
1107         if (is_route_rtmsg(msg))
1108                 process_delroute(msg->rtm_family, msg->rtm_scope,
1109                                                 msg, RTM_PAYLOAD(hdr));
1110 }
1111
1112 static void *rtnl_nd_opt_rdnss(struct nd_opt_hdr *opt, guint32 *lifetime,
1113                                int *nr_servers)
1114 {
1115         guint32 *optint = (void *)opt;
1116
1117         if (opt->nd_opt_len < 3)
1118                 return NULL;
1119
1120         if (*lifetime > ntohl(optint[1]))
1121                 *lifetime = ntohl(optint[1]);
1122
1123         /* nd_opt_len is in units of 8 bytes. The header is 1 unit (8 bytes)
1124            and each address is another 2 units (16 bytes).
1125            So the number of addresses (given rounding) is nd_opt_len/2 */
1126         *nr_servers = opt->nd_opt_len / 2;
1127
1128         /* And they start 8 bytes into the packet, or two guint32s in. */
1129         return optint + 2;
1130 }
1131
1132 static const char **rtnl_nd_opt_dnssl(struct nd_opt_hdr *opt, guint32 *lifetime)
1133 {
1134         const char **domains = NULL;
1135         guint32 *optint = (void *)opt;
1136         unsigned char *optc = (void *)&optint[2];
1137         int data_len = (opt->nd_opt_len * 8) - 8;
1138         int nr_domains = 0;
1139         int i, tmp;
1140
1141         if (*lifetime > ntohl(optint[1]))
1142                 *lifetime = ntohl(optint[1]);
1143
1144         /* Turn it into normal strings by converting the length bytes into '.',
1145            and count how many search domains there are while we're at it. */
1146         i = 0;
1147         while (i < data_len) {
1148                 if (optc[i] > 0x3f) {
1149                         DBG("DNSSL contains compressed elements in violation of RFC6106");
1150                         return NULL;
1151                 }
1152
1153                 if (optc[i] == 0) {
1154                         nr_domains++;
1155                         i++;
1156                         /* Check for double zero */
1157                         if (i < data_len && optc[i] == 0)
1158                                 break;
1159                         continue;
1160                 }
1161
1162                 tmp = i;
1163                 i += optc[i] + 1;
1164
1165                 if (i >= data_len) {
1166                         DBG("DNSSL data overflows option length");
1167                         return NULL;
1168                 }
1169
1170                 optc[tmp] = '.';
1171         }
1172
1173         domains = g_try_new0(const char *, nr_domains + 1);
1174         if (!domains)
1175                 return NULL;
1176
1177         /* Now point to the normal strings, missing out the leading '.' that
1178            each of them will have now. */
1179         for (i = 0; i < nr_domains; i++) {
1180                 domains[i] = (char *)optc + 1;
1181                 optc += strlen((char *)optc) + 1;
1182         }
1183
1184         return domains;
1185 }
1186
1187 static void rtnl_newnduseropt(struct nlmsghdr *hdr)
1188 {
1189         struct nduseroptmsg *msg = (struct nduseroptmsg *) NLMSG_DATA(hdr);
1190         struct nd_opt_hdr *opt = (void *)&msg[1];
1191         guint32 lifetime = -1;
1192         const char **domains = NULL;
1193         struct in6_addr *servers = NULL;
1194         int nr_servers = 0;
1195         int msglen = msg->nduseropt_opts_len;
1196         char *interface;
1197
1198         DBG("family %02x index %x len %04x type %02x code %02x",
1199             msg->nduseropt_family, msg->nduseropt_ifindex,
1200             msg->nduseropt_opts_len, msg->nduseropt_icmp_type,
1201             msg->nduseropt_icmp_code);
1202
1203         if (msg->nduseropt_family != AF_INET6 ||
1204             msg->nduseropt_icmp_type != ND_ROUTER_ADVERT ||
1205             msg->nduseropt_icmp_code != 0)
1206                 return;
1207
1208         interface = connman_inet_ifname(msg->nduseropt_ifindex);
1209         if (!interface)
1210                 return;
1211
1212         for (opt = (void *)&msg[1];
1213              msglen >= 2 && msglen >= opt->nd_opt_len && opt->nd_opt_len;
1214              msglen -= opt->nd_opt_len,
1215                      opt = ((void *)opt) + opt->nd_opt_len*8) {
1216
1217                 DBG("nd opt type %d len %d\n",
1218                     opt->nd_opt_type, opt->nd_opt_len);
1219
1220                 if (opt->nd_opt_type == 25)
1221                         servers = rtnl_nd_opt_rdnss(opt, &lifetime,
1222                                                     &nr_servers);
1223                 else if (opt->nd_opt_type == 31)
1224                         domains = rtnl_nd_opt_dnssl(opt, &lifetime);
1225         }
1226
1227         if (nr_servers) {
1228                 int i, j;
1229                 char buf[40];
1230
1231                 for (i = 0; i < nr_servers; i++) {
1232                         if (!inet_ntop(AF_INET6, servers + i, buf, sizeof(buf)))
1233                                 continue;
1234
1235                         if (domains == NULL || domains[0] == NULL) {
1236                                 connman_resolver_append_lifetime(interface,
1237                                                         NULL, buf, lifetime);
1238                                 continue;
1239                         }
1240
1241                         for (j = 0; domains[j]; j++)
1242                                 connman_resolver_append_lifetime(interface,
1243                                                                 domains[j],
1244                                                                 buf, lifetime);
1245                 }
1246         }
1247         g_free(domains);
1248         g_free(interface);
1249 }
1250
1251 static const char *type2string(uint16_t type)
1252 {
1253         switch (type) {
1254         case NLMSG_NOOP:
1255                 return "NOOP";
1256         case NLMSG_ERROR:
1257                 return "ERROR";
1258         case NLMSG_DONE:
1259                 return "DONE";
1260         case NLMSG_OVERRUN:
1261                 return "OVERRUN";
1262         case RTM_GETLINK:
1263                 return "GETLINK";
1264         case RTM_NEWLINK:
1265                 return "NEWLINK";
1266         case RTM_DELLINK:
1267                 return "DELLINK";
1268         case RTM_NEWADDR:
1269                 return "NEWADDR";
1270         case RTM_DELADDR:
1271                 return "DELADDR";
1272         case RTM_GETROUTE:
1273                 return "GETROUTE";
1274         case RTM_NEWROUTE:
1275                 return "NEWROUTE";
1276         case RTM_DELROUTE:
1277                 return "DELROUTE";
1278         case RTM_NEWNDUSEROPT:
1279                 return "NEWNDUSEROPT";
1280         default:
1281                 return "UNKNOWN";
1282         }
1283 }
1284
1285 static GIOChannel *channel = NULL;
1286
1287 struct rtnl_request {
1288         struct nlmsghdr hdr;
1289         struct rtgenmsg msg;
1290 };
1291 #define RTNL_REQUEST_SIZE  (sizeof(struct nlmsghdr) + sizeof(struct rtgenmsg))
1292
1293 static GSList *request_list = NULL;
1294 static guint32 request_seq = 0;
1295
1296 static struct rtnl_request *find_request(guint32 seq)
1297 {
1298         GSList *list;
1299
1300         for (list = request_list; list; list = list->next) {
1301                 struct rtnl_request *req = list->data;
1302
1303                 if (req->hdr.nlmsg_seq == seq)
1304                         return req;
1305         }
1306
1307         return NULL;
1308 }
1309
1310 static int send_request(struct rtnl_request *req)
1311 {
1312         struct sockaddr_nl addr;
1313         int sk;
1314
1315         DBG("%s len %d type %d flags 0x%04x seq %d",
1316                                 type2string(req->hdr.nlmsg_type),
1317                                 req->hdr.nlmsg_len, req->hdr.nlmsg_type,
1318                                 req->hdr.nlmsg_flags, req->hdr.nlmsg_seq);
1319
1320         sk = g_io_channel_unix_get_fd(channel);
1321
1322         memset(&addr, 0, sizeof(addr));
1323         addr.nl_family = AF_NETLINK;
1324
1325         return sendto(sk, req, req->hdr.nlmsg_len, 0,
1326                                 (struct sockaddr *) &addr, sizeof(addr));
1327 }
1328
1329 static int queue_request(struct rtnl_request *req)
1330 {
1331         request_list = g_slist_append(request_list, req);
1332
1333         if (g_slist_length(request_list) > 1)
1334                 return 0;
1335
1336         return send_request(req);
1337 }
1338
1339 static int process_response(guint32 seq)
1340 {
1341         struct rtnl_request *req;
1342
1343         DBG("seq %d", seq);
1344
1345         req = find_request(seq);
1346         if (req != NULL) {
1347                 request_list = g_slist_remove(request_list, req);
1348                 g_free(req);
1349         }
1350
1351         req = g_slist_nth_data(request_list, 0);
1352         if (req == NULL)
1353                 return 0;
1354
1355         return send_request(req);
1356 }
1357
1358 static void rtnl_message(void *buf, size_t len)
1359 {
1360         DBG("buf %p len %zd", buf, len);
1361
1362         while (len > 0) {
1363                 struct nlmsghdr *hdr = buf;
1364                 struct nlmsgerr *err;
1365
1366                 if (!NLMSG_OK(hdr, len))
1367                         break;
1368
1369                 DBG("%s len %d type %d flags 0x%04x seq %d",
1370                                         type2string(hdr->nlmsg_type),
1371                                         hdr->nlmsg_len, hdr->nlmsg_type,
1372                                         hdr->nlmsg_flags, hdr->nlmsg_seq);
1373
1374                 switch (hdr->nlmsg_type) {
1375                 case NLMSG_NOOP:
1376                 case NLMSG_OVERRUN:
1377                         return;
1378                 case NLMSG_DONE:
1379                         process_response(hdr->nlmsg_seq);
1380                         return;
1381                 case NLMSG_ERROR:
1382                         err = NLMSG_DATA(hdr);
1383                         DBG("error %d (%s)", -err->error,
1384                                                 strerror(-err->error));
1385                         return;
1386                 case RTM_NEWLINK:
1387                         rtnl_newlink(hdr);
1388                         break;
1389                 case RTM_DELLINK:
1390                         rtnl_dellink(hdr);
1391                         break;
1392                 case RTM_NEWADDR:
1393                         rtnl_newaddr(hdr);
1394                         break;
1395                 case RTM_DELADDR:
1396                         rtnl_deladdr(hdr);
1397                         break;
1398                 case RTM_NEWROUTE:
1399                         rtnl_newroute(hdr);
1400                         break;
1401                 case RTM_DELROUTE:
1402                         rtnl_delroute(hdr);
1403                         break;
1404                 case RTM_NEWNDUSEROPT:
1405                         rtnl_newnduseropt(hdr);
1406                         break;
1407                 }
1408
1409                 len -= hdr->nlmsg_len;
1410                 buf += hdr->nlmsg_len;
1411         }
1412 }
1413
1414 static gboolean netlink_event(GIOChannel *chan,
1415                                 GIOCondition cond, gpointer data)
1416 {
1417         unsigned char buf[4096];
1418         gsize len;
1419         GIOStatus status;
1420
1421         if (cond & (G_IO_NVAL | G_IO_HUP | G_IO_ERR))
1422                 return FALSE;
1423
1424         memset(buf, 0, sizeof(buf));
1425
1426         status = g_io_channel_read_chars(chan, (gchar *) buf,
1427                                                 sizeof(buf), &len, NULL);
1428
1429         switch (status) {
1430         case G_IO_STATUS_NORMAL:
1431                 break;
1432         case G_IO_STATUS_AGAIN:
1433                 return TRUE;
1434         default:
1435                 return FALSE;
1436         }
1437
1438         rtnl_message(buf, len);
1439
1440         return TRUE;
1441 }
1442
1443 static int send_getlink(void)
1444 {
1445         struct rtnl_request *req;
1446
1447         DBG("");
1448
1449         req = g_try_malloc0(RTNL_REQUEST_SIZE);
1450         if (req == NULL)
1451                 return -ENOMEM;
1452
1453         req->hdr.nlmsg_len = RTNL_REQUEST_SIZE;
1454         req->hdr.nlmsg_type = RTM_GETLINK;
1455         req->hdr.nlmsg_flags = NLM_F_REQUEST | NLM_F_DUMP;
1456         req->hdr.nlmsg_pid = 0;
1457         req->hdr.nlmsg_seq = request_seq++;
1458         req->msg.rtgen_family = AF_INET;
1459
1460         return queue_request(req);
1461 }
1462
1463 static int send_getaddr(void)
1464 {
1465         struct rtnl_request *req;
1466
1467         DBG("");
1468
1469         req = g_try_malloc0(RTNL_REQUEST_SIZE);
1470         if (req == NULL)
1471                 return -ENOMEM;
1472
1473         req->hdr.nlmsg_len = RTNL_REQUEST_SIZE;
1474         req->hdr.nlmsg_type = RTM_GETADDR;
1475         req->hdr.nlmsg_flags = NLM_F_REQUEST | NLM_F_DUMP;
1476         req->hdr.nlmsg_pid = 0;
1477         req->hdr.nlmsg_seq = request_seq++;
1478         req->msg.rtgen_family = AF_INET;
1479
1480         return queue_request(req);
1481 }
1482
1483 static int send_getroute(void)
1484 {
1485         struct rtnl_request *req;
1486
1487         DBG("");
1488
1489         req = g_try_malloc0(RTNL_REQUEST_SIZE);
1490         if (req == NULL)
1491                 return -ENOMEM;
1492
1493         req->hdr.nlmsg_len = RTNL_REQUEST_SIZE;
1494         req->hdr.nlmsg_type = RTM_GETROUTE;
1495         req->hdr.nlmsg_flags = NLM_F_REQUEST | NLM_F_DUMP;
1496         req->hdr.nlmsg_pid = 0;
1497         req->hdr.nlmsg_seq = request_seq++;
1498         req->msg.rtgen_family = AF_INET;
1499
1500         return queue_request(req);
1501 }
1502
1503 static gboolean update_timeout_cb(gpointer user_data)
1504 {
1505         __connman_rtnl_request_update();
1506
1507         return TRUE;
1508 }
1509
1510 static void update_interval_callback(guint min)
1511 {
1512         if (update_timeout > 0)
1513                 g_source_remove(update_timeout);
1514
1515         if (min < G_MAXUINT) {
1516                 update_interval = min;
1517                 update_timeout = g_timeout_add_seconds(update_interval,
1518                                                 update_timeout_cb, NULL);
1519         } else {
1520                 update_timeout = 0;
1521                 update_interval = G_MAXUINT;
1522         }
1523 }
1524
1525 static gint compare_interval(gconstpointer a, gconstpointer b)
1526 {
1527         guint val_a = GPOINTER_TO_UINT(a);
1528         guint val_b = GPOINTER_TO_UINT(b);
1529
1530         return val_a - val_b;
1531 }
1532
1533 unsigned int __connman_rtnl_update_interval_add(unsigned int interval)
1534 {
1535         guint min;
1536
1537         if (interval == 0)
1538                 return 0;
1539
1540         update_list = g_slist_insert_sorted(update_list,
1541                         GUINT_TO_POINTER(interval), compare_interval);
1542
1543         min = GPOINTER_TO_UINT(g_slist_nth_data(update_list, 0));
1544         if (min < update_interval) {
1545                 update_interval_callback(min);
1546                 __connman_rtnl_request_update();
1547         }
1548
1549         return update_interval;
1550 }
1551
1552 unsigned int __connman_rtnl_update_interval_remove(unsigned int interval)
1553 {
1554         guint min = G_MAXUINT;
1555
1556         if (interval == 0)
1557                 return 0;
1558
1559         update_list = g_slist_remove(update_list, GINT_TO_POINTER(interval));
1560
1561         if (update_list != NULL)
1562                 min = GPOINTER_TO_UINT(g_slist_nth_data(update_list, 0));
1563
1564         if (min > update_interval)
1565                 update_interval_callback(min);
1566
1567         return min;
1568 }
1569
1570 int __connman_rtnl_request_update(void)
1571 {
1572         return send_getlink();
1573 }
1574
1575 int __connman_rtnl_init(void)
1576 {
1577         struct sockaddr_nl addr;
1578         int sk;
1579
1580         DBG("");
1581
1582         interface_list = g_hash_table_new_full(g_direct_hash, g_direct_equal,
1583                                                         NULL, free_interface);
1584
1585         sk = socket(PF_NETLINK, SOCK_DGRAM | SOCK_CLOEXEC, NETLINK_ROUTE);
1586         if (sk < 0)
1587                 return -1;
1588
1589         memset(&addr, 0, sizeof(addr));
1590         addr.nl_family = AF_NETLINK;
1591         addr.nl_groups = RTMGRP_LINK | RTMGRP_IPV4_IFADDR | RTMGRP_IPV4_ROUTE |
1592                                 RTMGRP_IPV6_IFADDR | RTMGRP_IPV6_ROUTE |
1593                                 (1<<(RTNLGRP_ND_USEROPT-1));
1594
1595         if (bind(sk, (struct sockaddr *) &addr, sizeof(addr)) < 0) {
1596                 close(sk);
1597                 return -1;
1598         }
1599
1600         channel = g_io_channel_unix_new(sk);
1601         g_io_channel_set_close_on_unref(channel, TRUE);
1602
1603         g_io_channel_set_encoding(channel, NULL, NULL);
1604         g_io_channel_set_buffered(channel, FALSE);
1605
1606         g_io_add_watch(channel, G_IO_IN | G_IO_NVAL | G_IO_HUP | G_IO_ERR,
1607                                                         netlink_event, NULL);
1608
1609         return 0;
1610 }
1611
1612 void __connman_rtnl_start(void)
1613 {
1614         DBG("");
1615
1616         send_getlink();
1617         send_getaddr();
1618         send_getroute();
1619 }
1620
1621 void __connman_rtnl_cleanup(void)
1622 {
1623         GSList *list;
1624
1625         DBG("");
1626
1627         for (list = watch_list; list; list = list->next) {
1628                 struct watch_data *watch = list->data;
1629
1630                 DBG("removing watch %d", watch->id);
1631
1632                 g_free(watch);
1633                 list->data = NULL;
1634         }
1635
1636         g_slist_free(watch_list);
1637         watch_list = NULL;
1638
1639         g_slist_free(update_list);
1640         update_list = NULL;
1641
1642         for (list = request_list; list; list = list->next) {
1643                 struct rtnl_request *req = list->data;
1644
1645                 DBG("%s len %d type %d flags 0x%04x seq %d",
1646                                 type2string(req->hdr.nlmsg_type),
1647                                 req->hdr.nlmsg_len, req->hdr.nlmsg_type,
1648                                 req->hdr.nlmsg_flags, req->hdr.nlmsg_seq);
1649
1650                 g_free(req);
1651                 list->data = NULL;
1652         }
1653
1654         g_slist_free(request_list);
1655         request_list = NULL;
1656
1657         g_io_channel_shutdown(channel, TRUE, NULL);
1658         g_io_channel_unref(channel);
1659
1660         channel = NULL;
1661
1662         g_hash_table_destroy(interface_list);
1663 }