dlls/iphlpapi/iphlpapi_main.c

   1 /*
   2  * iphlpapi dll implementation
   3  *
   4  * Copyright (C) 2003,2006 Juan Lang
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library 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 GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  19  */
  20
  21 #include "config.h"
  22
  23 #include <stdarg.h>
  24 #include <stdlib.h>
  25 #include <sys/types.h>
  26 #ifdef HAVE_NETINET_IN_H
  27 # include <netinet/in.h>
  28 #endif
  29 #ifdef HAVE_ARPA_INET_H
  30 # include <arpa/inet.h>
  31 #endif
  32 #ifdef HAVE_ARPA_NAMESER_H
  33 # include <arpa/nameser.h>
  34 #endif
  35 #ifdef HAVE_RESOLV_H
  36 # include <resolv.h>
  37 #endif
  38
  39 #define NONAMELESSUNION
  40 #define NONAMELESSSTRUCT
  41 #include "windef.h"
  42 #include "winbase.h"
  43 #include "winreg.h"
  44 #define USE_WS_PREFIX
  45 #include "winsock2.h"
  46 #include "winternl.h"
  47 #include "ws2ipdef.h"
  48 #include "iphlpapi.h"
  49 #include "ifenum.h"
  50 #include "ipstats.h"
  51 #include "ipifcons.h"
  52 #include "fltdefs.h"
  53
  54 #include "wine/debug.h"
  55
  56 WINE_DEFAULT_DEBUG_CHANNEL(iphlpapi);
  57
  58 #ifndef IF_NAMESIZE
  59 #define IF_NAMESIZE 16
  60 #endif
  61
  62 #ifndef INADDR_NONE
  63 #define INADDR_NONE ~0UL
  64 #endif
  65
  66 /* call res_init() just once because of a bug in Mac OS X 10.4 */
  67 /* Call once per thread on systems that have per-thread _res. */
  68 static void initialise_resolver(void)
  69 {
  70     if ((_res.options & RES_INIT) == 0)
  71         res_init();
  72 }
  73
  74 BOOL WINAPI DllMain (HINSTANCE hinstDLL, DWORD fdwReason, LPVOID lpvReserved)
  75 {
  76   switch (fdwReason) {
  77     case DLL_PROCESS_ATTACH:
  78       DisableThreadLibraryCalls( hinstDLL );
  79       break;
  80
  81     case DLL_PROCESS_DETACH:
  82       break;
  83   }
  84   return TRUE;
  85 }
  86
  87 /******************************************************************
  88  *    AddIPAddress (IPHLPAPI.@)
  89  *
  90  * Add an IP address to an adapter.
  91  *
  92  * PARAMS
  93  *  Address     [In]  IP address to add to the adapter
  94  *  IpMask      [In]  subnet mask for the IP address
  95  *  IfIndex     [In]  adapter index to add the address
  96  *  NTEContext  [Out] Net Table Entry (NTE) context for the IP address
  97  *  NTEInstance [Out] NTE instance for the IP address
  98  *
  99  * RETURNS
 100  *  Success: NO_ERROR
 101  *  Failure: error code from winerror.h
 102  *
 103  * FIXME
 104  *  Stub. Currently returns ERROR_NOT_SUPPORTED.
 105  */
 106 DWORD WINAPI AddIPAddress(IPAddr Address, IPMask IpMask, DWORD IfIndex, PULONG NTEContext, PULONG NTEInstance)
 107 {
 108   FIXME(":stub\n");
 109   return ERROR_NOT_SUPPORTED;
 110 }
 111
 112
 113 /******************************************************************
 114  *    AllocateAndGetIfTableFromStack (IPHLPAPI.@)
 115  *
 116  * Get table of local interfaces.
 117  * Like GetIfTable(), but allocate the returned table from heap.
 118  *
 119  * PARAMS
 120  *  ppIfTable [Out] pointer into which the MIB_IFTABLE is
 121  *                  allocated and returned.
 122  *  bOrder    [In]  whether to sort the table
 123  *  heap      [In]  heap from which the table is allocated
 124  *  flags     [In]  flags to HeapAlloc
 125  *
 126  * RETURNS
 127  *  ERROR_INVALID_PARAMETER if ppIfTable is NULL, whatever
 128  *  GetIfTable() returns otherwise.
 129  */
 130 DWORD WINAPI AllocateAndGetIfTableFromStack(PMIB_IFTABLE *ppIfTable,
 131  BOOL bOrder, HANDLE heap, DWORD flags)
 132 {
 133   DWORD ret;
 134
 135   TRACE("ppIfTable %p, bOrder %d, heap %p, flags 0x%08x\n", ppIfTable,
 136         bOrder, heap, flags);
 137   if (!ppIfTable)
 138     ret = ERROR_INVALID_PARAMETER;
 139   else {
 140     DWORD dwSize = 0;
 141
 142     ret = GetIfTable(*ppIfTable, &dwSize, bOrder);
 143     if (ret == ERROR_INSUFFICIENT_BUFFER) {
 144       *ppIfTable = HeapAlloc(heap, flags, dwSize);
 145       ret = GetIfTable(*ppIfTable, &dwSize, bOrder);
 146     }
 147   }
 148   TRACE("returning %d\n", ret);
 149   return ret;
 150 }
 151
 152
 153 static int IpAddrTableSorter(const void *a, const void *b)
 154 {
 155   int ret;
 156
 157   if (a && b)
 158     ret = ((const MIB_IPADDRROW*)a)->dwAddr - ((const MIB_IPADDRROW*)b)->dwAddr;
 159   else
 160     ret = 0;
 161   return ret;
 162 }
 163
 164
 165 /******************************************************************
 166  *    AllocateAndGetIpAddrTableFromStack (IPHLPAPI.@)
 167  *
 168  * Get interface-to-IP address mapping table.
 169  * Like GetIpAddrTable(), but allocate the returned table from heap.
 170  *
 171  * PARAMS
 172  *  ppIpAddrTable [Out] pointer into which the MIB_IPADDRTABLE is
 173  *                      allocated and returned.
 174  *  bOrder        [In]  whether to sort the table
 175  *  heap          [In]  heap from which the table is allocated
 176  *  flags         [In]  flags to HeapAlloc
 177  *
 178  * RETURNS
 179  *  ERROR_INVALID_PARAMETER if ppIpAddrTable is NULL, other error codes on
 180  *  failure, NO_ERROR on success.
 181  */
 182 DWORD WINAPI AllocateAndGetIpAddrTableFromStack(PMIB_IPADDRTABLE *ppIpAddrTable,
 183  BOOL bOrder, HANDLE heap, DWORD flags)
 184 {
 185   DWORD ret;
 186
 187   TRACE("ppIpAddrTable %p, bOrder %d, heap %p, flags 0x%08x\n",
 188    ppIpAddrTable, bOrder, heap, flags);
 189   ret = getIPAddrTable(ppIpAddrTable, heap, flags);
 190   if (!ret && bOrder)
 191     qsort((*ppIpAddrTable)->table, (*ppIpAddrTable)->dwNumEntries,
 192      sizeof(MIB_IPADDRROW), IpAddrTableSorter);
 193   TRACE("returning %d\n", ret);
 194   return ret;
 195 }
 196
 197
 198 /******************************************************************
 199  *    CancelIPChangeNotify (IPHLPAPI.@)
 200  *
 201  * Cancel a previous notification created by NotifyAddrChange or
 202  * NotifyRouteChange.
 203  *
 204  * PARAMS
 205  *  overlapped [In]  overlapped structure that notifies the caller
 206  *
 207  * RETURNS
 208  *  Success: TRUE
 209  *  Failure: FALSE
 210  *
 211  * FIXME
 212  *  Stub, returns FALSE.
 213  */
 214 BOOL WINAPI CancelIPChangeNotify(LPOVERLAPPED overlapped)
 215 {
 216   FIXME("(overlapped %p): stub\n", overlapped);
 217   return FALSE;
 218 }
 219
 220
 221
 222 /******************************************************************
 223  *    CreateIpForwardEntry (IPHLPAPI.@)
 224  *
 225  * Create a route in the local computer's IP table.
 226  *
 227  * PARAMS
 228  *  pRoute [In] new route information
 229  *
 230  * RETURNS
 231  *  Success: NO_ERROR
 232  *  Failure: error code from winerror.h
 233  *
 234  * FIXME
 235  *  Stub, always returns NO_ERROR.
 236  */
 237 DWORD WINAPI CreateIpForwardEntry(PMIB_IPFORWARDROW pRoute)
 238 {
 239   FIXME("(pRoute %p): stub\n", pRoute);
 240   /* could use SIOCADDRT, not sure I want to */
 241   return 0;
 242 }
 243
 244
 245 /******************************************************************
 246  *    CreateIpNetEntry (IPHLPAPI.@)
 247  *
 248  * Create entry in the ARP table.
 249  *
 250  * PARAMS
 251  *  pArpEntry [In] new ARP entry
 252  *
 253  * RETURNS
 254  *  Success: NO_ERROR
 255  *  Failure: error code from winerror.h
 256  *
 257  * FIXME
 258  *  Stub, always returns NO_ERROR.
 259  */
 260 DWORD WINAPI CreateIpNetEntry(PMIB_IPNETROW pArpEntry)
 261 {
 262   FIXME("(pArpEntry %p)\n", pArpEntry);
 263   /* could use SIOCSARP on systems that support it, not sure I want to */
 264   return 0;
 265 }
 266
 267
 268 /******************************************************************
 269  *    CreateProxyArpEntry (IPHLPAPI.@)
 270  *
 271  * Create a Proxy ARP (PARP) entry for an IP address.
 272  *
 273  * PARAMS
 274  *  dwAddress [In] IP address for which this computer acts as a proxy.
 275  *  dwMask    [In] subnet mask for dwAddress
 276  *  dwIfIndex [In] interface index
 277  *
 278  * RETURNS
 279  *  Success: NO_ERROR
 280  *  Failure: error code from winerror.h
 281  *
 282  * FIXME
 283  *  Stub, returns ERROR_NOT_SUPPORTED.
 284  */
 285 DWORD WINAPI CreateProxyArpEntry(DWORD dwAddress, DWORD dwMask, DWORD dwIfIndex)
 286 {
 287   FIXME("(dwAddress 0x%08x, dwMask 0x%08x, dwIfIndex 0x%08x): stub\n",
 288    dwAddress, dwMask, dwIfIndex);
 289   return ERROR_NOT_SUPPORTED;
 290 }
 291
 292
 293 /******************************************************************
 294  *    DeleteIPAddress (IPHLPAPI.@)
 295  *
 296  * Delete an IP address added with AddIPAddress().
 297  *
 298  * PARAMS
 299  *  NTEContext [In] NTE context from AddIPAddress();
 300  *
 301  * RETURNS
 302  *  Success: NO_ERROR
 303  *  Failure: error code from winerror.h
 304  *
 305  * FIXME
 306  *  Stub, returns ERROR_NOT_SUPPORTED.
 307  */
 308 DWORD WINAPI DeleteIPAddress(ULONG NTEContext)
 309 {
 310   FIXME("(NTEContext %d): stub\n", NTEContext);
 311   return ERROR_NOT_SUPPORTED;
 312 }
 313
 314
 315 /******************************************************************
 316  *    DeleteIpForwardEntry (IPHLPAPI.@)
 317  *
 318  * Delete a route.
 319  *
 320  * PARAMS
 321  *  pRoute [In] route to delete
 322  *
 323  * RETURNS
 324  *  Success: NO_ERROR
 325  *  Failure: error code from winerror.h
 326  *
 327  * FIXME
 328  *  Stub, returns NO_ERROR.
 329  */
 330 DWORD WINAPI DeleteIpForwardEntry(PMIB_IPFORWARDROW pRoute)
 331 {
 332   FIXME("(pRoute %p): stub\n", pRoute);
 333   /* could use SIOCDELRT, not sure I want to */
 334   return 0;
 335 }
 336
 337
 338 /******************************************************************
 339  *    DeleteIpNetEntry (IPHLPAPI.@)
 340  *
 341  * Delete an ARP entry.
 342  *
 343  * PARAMS
 344  *  pArpEntry [In] ARP entry to delete
 345  *
 346  * RETURNS
 347  *  Success: NO_ERROR
 348  *  Failure: error code from winerror.h
 349  *
 350  * FIXME
 351  *  Stub, returns NO_ERROR.
 352  */
 353 DWORD WINAPI DeleteIpNetEntry(PMIB_IPNETROW pArpEntry)
 354 {
 355   FIXME("(pArpEntry %p): stub\n", pArpEntry);
 356   /* could use SIOCDARP on systems that support it, not sure I want to */
 357   return 0;
 358 }
 359
 360
 361 /******************************************************************
 362  *    DeleteProxyArpEntry (IPHLPAPI.@)
 363  *
 364  * Delete a Proxy ARP entry.
 365  *
 366  * PARAMS
 367  *  dwAddress [In] IP address for which this computer acts as a proxy.
 368  *  dwMask    [In] subnet mask for dwAddress
 369  *  dwIfIndex [In] interface index
 370  *
 371  * RETURNS
 372  *  Success: NO_ERROR
 373  *  Failure: error code from winerror.h
 374  *
 375  * FIXME
 376  *  Stub, returns ERROR_NOT_SUPPORTED.
 377  */
 378 DWORD WINAPI DeleteProxyArpEntry(DWORD dwAddress, DWORD dwMask, DWORD dwIfIndex)
 379 {
 380   FIXME("(dwAddress 0x%08x, dwMask 0x%08x, dwIfIndex 0x%08x): stub\n",
 381    dwAddress, dwMask, dwIfIndex);
 382   return ERROR_NOT_SUPPORTED;
 383 }
 384
 385
 386 /******************************************************************
 387  *    EnableRouter (IPHLPAPI.@)
 388  *
 389  * Turn on ip forwarding.
 390  *
 391  * PARAMS
 392  *  pHandle     [In/Out]
 393  *  pOverlapped [In/Out] hEvent member should contain a valid handle.
 394  *
 395  * RETURNS
 396  *  Success: ERROR_IO_PENDING
 397  *  Failure: error code from winerror.h
 398  *
 399  * FIXME
 400  *  Stub, returns ERROR_NOT_SUPPORTED.
 401  */
 402 DWORD WINAPI EnableRouter(HANDLE * pHandle, OVERLAPPED * pOverlapped)
 403 {
 404   FIXME("(pHandle %p, pOverlapped %p): stub\n", pHandle, pOverlapped);
 405   /* could echo "1" > /proc/net/sys/net/ipv4/ip_forward, not sure I want to
 406      could map EACCESS to ERROR_ACCESS_DENIED, I suppose
 407    */
 408   return ERROR_NOT_SUPPORTED;
 409 }
 410
 411
 412 /******************************************************************
 413  *    FlushIpNetTable (IPHLPAPI.@)
 414  *
 415  * Delete all ARP entries of an interface
 416  *
 417  * PARAMS
 418  *  dwIfIndex [In] interface index
 419  *
 420  * RETURNS
 421  *  Success: NO_ERROR
 422  *  Failure: error code from winerror.h
 423  *
 424  * FIXME
 425  *  Stub, returns ERROR_NOT_SUPPORTED.
 426  */
 427 DWORD WINAPI FlushIpNetTable(DWORD dwIfIndex)
 428 {
 429   FIXME("(dwIfIndex 0x%08x): stub\n", dwIfIndex);
 430   /* this flushes the arp cache of the given index */
 431   return ERROR_NOT_SUPPORTED;
 432 }
 433
 434
 435 /******************************************************************
 436  *    GetAdapterIndex (IPHLPAPI.@)
 437  *
 438  * Get interface index from its name.
 439  *
 440  * PARAMS
 441  *  AdapterName [In]  unicode string with the adapter name
 442  *  IfIndex     [Out] returns found interface index
 443  *
 444  * RETURNS
 445  *  Success: NO_ERROR
 446  *  Failure: error code from winerror.h
 447  */
 448 DWORD WINAPI GetAdapterIndex(LPWSTR AdapterName, PULONG IfIndex)
 449 {
 450   char adapterName[MAX_ADAPTER_NAME];
 451   unsigned int i;
 452   DWORD ret;
 453
 454   TRACE("(AdapterName %p, IfIndex %p)\n", AdapterName, IfIndex);
 455   /* The adapter name is guaranteed not to have any unicode characters, so
 456    * this translation is never lossy */
 457   for (i = 0; i < sizeof(adapterName) - 1 && AdapterName[i]; i++)
 458     adapterName[i] = (char)AdapterName[i];
 459   adapterName[i] = '\0';
 460   ret = getInterfaceIndexByName(adapterName, IfIndex);
 461   TRACE("returning %d\n", ret);
 462   return ret;
 463 }
 464
 465
 466 /******************************************************************
 467  *    GetAdaptersInfo (IPHLPAPI.@)
 468  *
 469  * Get information about adapters.
 470  *
 471  * PARAMS
 472  *  pAdapterInfo [Out] buffer for adapter infos
 473  *  pOutBufLen   [In]  length of output buffer
 474  *
 475  * RETURNS
 476  *  Success: NO_ERROR
 477  *  Failure: error code from winerror.h
 478  */
 479 DWORD WINAPI GetAdaptersInfo(PIP_ADAPTER_INFO pAdapterInfo, PULONG pOutBufLen)
 480 {
 481   DWORD ret;
 482
 483   TRACE("pAdapterInfo %p, pOutBufLen %p\n", pAdapterInfo, pOutBufLen);
 484   if (!pOutBufLen)
 485     ret = ERROR_INVALID_PARAMETER;
 486   else {
 487     DWORD numNonLoopbackInterfaces = getNumNonLoopbackInterfaces();
 488
 489     if (numNonLoopbackInterfaces > 0) {
 490       DWORD numIPAddresses = getNumIPAddresses();
 491       ULONG size;
 492
 493       /* This may slightly overestimate the amount of space needed, because
 494        * the IP addresses include the loopback address, but it's easier
 495        * to make sure there's more than enough space than to make sure there's
 496        * precisely enough space.
 497        */
 498       size = sizeof(IP_ADAPTER_INFO) * numNonLoopbackInterfaces;
 499       size += numIPAddresses  * sizeof(IP_ADDR_STRING);
 500       if (!pAdapterInfo || *pOutBufLen < size) {
 501         *pOutBufLen = size;
 502         ret = ERROR_BUFFER_OVERFLOW;
 503       }
 504       else {
 505         InterfaceIndexTable *table = NULL;
 506         PMIB_IPADDRTABLE ipAddrTable = NULL;
 507         PMIB_IPFORWARDTABLE routeTable = NULL;
 508
 509         ret = getIPAddrTable(&ipAddrTable, GetProcessHeap(), 0);
 510         if (!ret)
 511           ret = AllocateAndGetIpForwardTableFromStack(&routeTable, FALSE, GetProcessHeap(), 0);
 512         if (!ret)
 513           table = getNonLoopbackInterfaceIndexTable();
 514         if (table) {
 515           size = sizeof(IP_ADAPTER_INFO) * table->numIndexes;
 516           size += ipAddrTable->dwNumEntries * sizeof(IP_ADDR_STRING);
 517           if (*pOutBufLen < size) {
 518             *pOutBufLen = size;
 519             ret = ERROR_INSUFFICIENT_BUFFER;
 520           }
 521           else {
 522             DWORD ndx;
 523             HKEY hKey;
 524             BOOL winsEnabled = FALSE;
 525             IP_ADDRESS_STRING primaryWINS, secondaryWINS;
 526             PIP_ADDR_STRING nextIPAddr = (PIP_ADDR_STRING)((LPBYTE)pAdapterInfo
 527              + numNonLoopbackInterfaces * sizeof(IP_ADAPTER_INFO));
 528
 529             memset(pAdapterInfo, 0, size);
 530             /* @@ Wine registry key: HKCU\Software\Wine\Network */
 531             if (RegOpenKeyA(HKEY_CURRENT_USER, "Software\\Wine\\Network",
 532              &hKey) == ERROR_SUCCESS) {
 533               DWORD size = sizeof(primaryWINS.String);
 534               unsigned long addr;
 535
 536               RegQueryValueExA(hKey, "WinsServer", NULL, NULL,
 537                (LPBYTE)primaryWINS.String, &size);
 538               addr = inet_addr(primaryWINS.String);
 539               if (addr != INADDR_NONE && addr != INADDR_ANY)
 540                 winsEnabled = TRUE;
 541               size = sizeof(secondaryWINS.String);
 542               RegQueryValueExA(hKey, "BackupWinsServer", NULL, NULL,
 543                (LPBYTE)secondaryWINS.String, &size);
 544               addr = inet_addr(secondaryWINS.String);
 545               if (addr != INADDR_NONE && addr != INADDR_ANY)
 546                 winsEnabled = TRUE;
 547               RegCloseKey(hKey);
 548             }
 549             for (ndx = 0; ndx < table->numIndexes; ndx++) {
 550               PIP_ADAPTER_INFO ptr = &pAdapterInfo[ndx];
 551               DWORD i;
 552               PIP_ADDR_STRING currentIPAddr = &ptr->IpAddressList;
 553               BOOL firstIPAddr = TRUE;
 554
 555               /* on Win98 this is left empty, but whatever */
 556               getInterfaceNameByIndex(table->indexes[ndx], ptr->AdapterName);
 557               getInterfaceNameByIndex(table->indexes[ndx], ptr->Description);
 558               ptr->AddressLength = sizeof(ptr->Address);
 559               getInterfacePhysicalByIndex(table->indexes[ndx],
 560                &ptr->AddressLength, ptr->Address, &ptr->Type);
 561               ptr->Index = table->indexes[ndx];
 562               for (i = 0; i < ipAddrTable->dwNumEntries; i++) {
 563                 if (ipAddrTable->table[i].dwIndex == ptr->Index) {
 564                   if (firstIPAddr) {
 565                     toIPAddressString(ipAddrTable->table[i].dwAddr,
 566                      ptr->IpAddressList.IpAddress.String);
 567                     toIPAddressString(ipAddrTable->table[i].dwMask,
 568                      ptr->IpAddressList.IpMask.String);
 569                     firstIPAddr = FALSE;
 570                   }
 571                   else {
 572                     currentIPAddr->Next = nextIPAddr;
 573                     currentIPAddr = nextIPAddr;
 574                     toIPAddressString(ipAddrTable->table[i].dwAddr,
 575                      currentIPAddr->IpAddress.String);
 576                     toIPAddressString(ipAddrTable->table[i].dwMask,
 577                      currentIPAddr->IpMask.String);
 578                     nextIPAddr++;
 579                   }
 580                 }
 581               }
 582               /* Find first router through this interface, which we'll assume
 583                * is the default gateway for this adapter */
 584               for (i = 0; i < routeTable->dwNumEntries; i++)
 585                 if (routeTable->table[i].dwForwardIfIndex == ptr->Index
 586                  && routeTable->table[i].dwForwardType ==
 587                  MIB_IPROUTE_TYPE_INDIRECT)
 588                   toIPAddressString(routeTable->table[i].dwForwardNextHop,
 589                    ptr->GatewayList.IpAddress.String);
 590               if (winsEnabled) {
 591                 ptr->HaveWins = TRUE;
 592                 memcpy(ptr->PrimaryWinsServer.IpAddress.String,
 593                  primaryWINS.String, sizeof(primaryWINS.String));
 594                 memcpy(ptr->SecondaryWinsServer.IpAddress.String,
 595                  secondaryWINS.String, sizeof(secondaryWINS.String));
 596               }
 597               if (ndx < table->numIndexes - 1)
 598                 ptr->Next = &pAdapterInfo[ndx + 1];
 599               else
 600                 ptr->Next = NULL;
 601             }
 602             ret = NO_ERROR;
 603           }
 604           HeapFree(GetProcessHeap(), 0, table);
 605         }
 606         else
 607           ret = ERROR_OUTOFMEMORY;
 608         HeapFree(GetProcessHeap(), 0, routeTable);
 609         HeapFree(GetProcessHeap(), 0, ipAddrTable);
 610       }
 611     }
 612     else
 613       ret = ERROR_NO_DATA;
 614   }
 615   TRACE("returning %d\n", ret);
 616   return ret;
 617 }
 618
 619 static DWORD typeFromMibType(DWORD mib_type)
 620 {
 621     switch (mib_type)
 622     {
 623     case MIB_IF_TYPE_ETHERNET:  return IF_TYPE_ETHERNET_CSMACD;
 624     case MIB_IF_TYPE_TOKENRING: return IF_TYPE_ISO88025_TOKENRING;
 625     case MIB_IF_TYPE_PPP:       return IF_TYPE_PPP;
 626     case MIB_IF_TYPE_LOOPBACK:  return IF_TYPE_SOFTWARE_LOOPBACK;
 627     default:                    return IF_TYPE_OTHER;
 628     }
 629 }
 630
 631 static DWORD connectionTypeFromMibType(DWORD mib_type)
 632 {
 633     switch (mib_type)
 634     {
 635     case MIB_IF_TYPE_PPP:       return NET_IF_CONNECTION_DEMAND;
 636     case MIB_IF_TYPE_SLIP:      return NET_IF_CONNECTION_DEMAND;
 637     default:                    return NET_IF_CONNECTION_DEDICATED;
 638     }
 639 }
 640
 641 static ULONG v4addressesFromIndex(DWORD index, DWORD **addrs, ULONG *num_addrs)
 642 {
 643     ULONG ret, i, j;
 644     MIB_IPADDRTABLE *at;
 645
 646     *num_addrs = 0;
 647     if ((ret = getIPAddrTable(&at, GetProcessHeap(), 0))) return ret;
 648     for (i = 0; i < at->dwNumEntries; i++)
 649     {
 650         if (at->table[i].dwIndex == index) (*num_addrs)++;
 651     }
 652     if (!(*addrs = HeapAlloc(GetProcessHeap(), 0, *num_addrs * sizeof(DWORD))))
 653     {
 654         HeapFree(GetProcessHeap(), 0, at);
 655         return ERROR_OUTOFMEMORY;
 656     }
 657     for (i = 0, j = 0; i < at->dwNumEntries; i++)
 658     {
 659         if (at->table[i].dwIndex == index) (*addrs)[j++] = at->table[i].dwAddr;
 660     }
 661     HeapFree(GetProcessHeap(), 0, at);
 662     return ERROR_SUCCESS;
 663 }
 664
 665 static char *debugstr_ipv4(const in_addr_t *in_addr, char *buf)
 666 {
 667     const BYTE *addrp;
 668     char *p = buf;
 669
 670     for (addrp = (const BYTE *)in_addr;
 671      addrp - (const BYTE *)in_addr < sizeof(*in_addr);
 672      addrp++)
 673     {
 674         if (addrp == (const BYTE *)in_addr + sizeof(*in_addr) - 1)
 675             sprintf(p, "%d", *addrp);
 676         else
 677             p += sprintf(p, "%d.", *addrp);
 678     }
 679     return buf;
 680 }
 681
 682 static char *debugstr_ipv6(const struct WS_sockaddr_in6 *sin, char *buf)
 683 {
 684     const IN6_ADDR *addr = &sin->sin6_addr;
 685     char *p = buf;
 686     int i;
 687     BOOL in_zero = FALSE;
 688
 689     for (i = 0; i < 7; i++)
 690     {
 691         if (!addr->u.Word[i])
 692         {
 693             if (i == 0)
 694                 *p++ = ':';
 695             if (!in_zero)
 696             {
 697                 *p++ = ':';
 698                 in_zero = TRUE;
 699             }
 700         }
 701         else
 702         {
 703             p += sprintf(p, "%x:", ntohs(addr->u.Word[i]));
 704             in_zero = FALSE;
 705         }
 706     }
 707     sprintf(p, "%x", ntohs(addr->u.Word[7]));
 708     return buf;
 709 }
 710
 711 static ULONG count_v4_gateways(DWORD index, PMIB_IPFORWARDTABLE routeTable)
 712 {
 713     DWORD i, num_gateways = 0;
 714
 715     for (i = 0; i < routeTable->dwNumEntries; i++)
 716     {
 717         if (routeTable->table[i].dwForwardIfIndex == index &&
 718             routeTable->table[i].dwForwardType == MIB_IPROUTE_TYPE_INDIRECT)
 719             num_gateways++;
 720     }
 721     return num_gateways;
 722 }
 723
 724 static PMIB_IPFORWARDROW findIPv4Gateway(DWORD index,
 725                                          PMIB_IPFORWARDTABLE routeTable)
 726 {
 727     DWORD i;
 728     PMIB_IPFORWARDROW row = NULL;
 729
 730     for (i = 0; !row && i < routeTable->dwNumEntries; i++)
 731     {
 732         if (routeTable->table[i].dwForwardIfIndex == index &&
 733             routeTable->table[i].dwForwardType == MIB_IPROUTE_TYPE_INDIRECT)
 734             row = &routeTable->table[i];
 735     }
 736     return row;
 737 }
 738
 739 static ULONG adapterAddressesFromIndex(ULONG family, ULONG flags, DWORD index,
 740                                        IP_ADAPTER_ADDRESSES *aa, ULONG *size)
 741 {
 742     ULONG ret = ERROR_SUCCESS, i, num_v4addrs = 0, num_v4_gateways = 0, num_v6addrs = 0, total_size;
 743     DWORD *v4addrs = NULL;
 744     SOCKET_ADDRESS *v6addrs = NULL;
 745     PMIB_IPFORWARDTABLE routeTable = NULL;
 746
 747     if (family == WS_AF_INET)
 748     {
 749         if (!(flags & GAA_FLAG_SKIP_UNICAST))
 750             ret = v4addressesFromIndex(index, &v4addrs, &num_v4addrs);
 751         if (!ret && flags & GAA_FLAG_INCLUDE_ALL_GATEWAYS)
 752         {
 753             ret = AllocateAndGetIpForwardTableFromStack(&routeTable, FALSE,
 754                                                         GetProcessHeap(), 0);
 755             if (!ret)
 756                 num_v4_gateways = count_v4_gateways(index, routeTable);
 757         }
 758     }
 759     else if (family == WS_AF_INET6)
 760     {
 761         if (!(flags & GAA_FLAG_SKIP_UNICAST))
 762             ret = v6addressesFromIndex(index, &v6addrs, &num_v6addrs);
 763     }
 764     else if (family == WS_AF_UNSPEC)
 765     {
 766         if (!(flags & GAA_FLAG_SKIP_UNICAST))
 767             ret = v4addressesFromIndex(index, &v4addrs, &num_v4addrs);
 768         if (!ret && flags & GAA_FLAG_INCLUDE_ALL_GATEWAYS)
 769         {
 770             ret = AllocateAndGetIpForwardTableFromStack(&routeTable, FALSE,
 771                                                         GetProcessHeap(), 0);
 772             if (!ret)
 773             {
 774                 num_v4_gateways = count_v4_gateways(index, routeTable);
 775                 if (!(flags & GAA_FLAG_SKIP_UNICAST))
 776                     ret = v6addressesFromIndex(index, &v6addrs, &num_v6addrs);
 777             }
 778         }
 779     }
 780     else
 781     {
 782         FIXME("address family %u unsupported\n", family);
 783         ret = ERROR_NO_DATA;
 784     }
 785     if (ret)
 786     {
 787         HeapFree(GetProcessHeap(), 0, routeTable);
 788         return ret;
 789     }
 790
 791     total_size = sizeof(IP_ADAPTER_ADDRESSES);
 792     total_size += IF_NAMESIZE;
 793     total_size += IF_NAMESIZE * sizeof(WCHAR);
 794     if (!(flags & GAA_FLAG_SKIP_FRIENDLY_NAME))
 795         total_size += IF_NAMESIZE * sizeof(WCHAR);
 796     total_size += sizeof(IP_ADAPTER_UNICAST_ADDRESS) * num_v4addrs;
 797     total_size += sizeof(struct sockaddr_in) * num_v4addrs;
 798     total_size += (sizeof(IP_ADAPTER_GATEWAY_ADDRESS) + sizeof(SOCKADDR_IN)) * num_v4_gateways;
 799     total_size += sizeof(IP_ADAPTER_UNICAST_ADDRESS) * num_v6addrs;
 800     total_size += sizeof(SOCKET_ADDRESS) * num_v6addrs;
 801     for (i = 0; i < num_v6addrs; i++)
 802         total_size += v6addrs[i].iSockaddrLength;
 803
 804     if (aa && *size >= total_size)
 805     {
 806         char name[IF_NAMESIZE], *ptr = (char *)aa + sizeof(IP_ADAPTER_ADDRESSES), *src;
 807         WCHAR *dst;
 808         DWORD buflen, type, status;
 809
 810         memset(aa, 0, sizeof(IP_ADAPTER_ADDRESSES));
 811         aa->u.s.Length  = sizeof(IP_ADAPTER_ADDRESSES);
 812         aa->u.s.IfIndex = index;
 813
 814         getInterfaceNameByIndex(index, name);
 815         memcpy(ptr, name, IF_NAMESIZE);
 816         aa->AdapterName = ptr;
 817         ptr += IF_NAMESIZE;
 818         if (!(flags & GAA_FLAG_SKIP_FRIENDLY_NAME))
 819         {
 820             aa->FriendlyName = (WCHAR *)ptr;
 821             for (src = name, dst = (WCHAR *)ptr; *src; src++, dst++)
 822                 *dst = *src;
 823             *dst++ = 0;
 824             ptr = (char *)dst;
 825         }
 826         aa->Description = (WCHAR *)ptr;
 827         for (src = name, dst = (WCHAR *)ptr; *src; src++, dst++)
 828             *dst = *src;
 829         *dst++ = 0;
 830         ptr = (char *)dst;
 831
 832         TRACE("%s: %d IPv4 addresses, %d IPv6 addresses:\n", name, num_v4addrs,
 833               num_v6addrs);
 834         if (num_v4_gateways)
 835         {
 836             PMIB_IPFORWARDROW adapterRow;
 837
 838             if ((adapterRow = findIPv4Gateway(index, routeTable)))
 839             {
 840                 PIP_ADAPTER_GATEWAY_ADDRESS gw;
 841                 PSOCKADDR_IN sin;
 842
 843                 gw = (PIP_ADAPTER_GATEWAY_ADDRESS)ptr;
 844                 aa->FirstGatewayAddress = gw;
 845
 846                 gw->u.s.Length = sizeof(IP_ADAPTER_GATEWAY_ADDRESS);
 847                 ptr += sizeof(IP_ADAPTER_GATEWAY_ADDRESS);
 848                 sin = (PSOCKADDR_IN)ptr;
 849                 sin->sin_family = AF_INET;
 850                 sin->sin_port = 0;
 851                 memcpy(&sin->sin_addr, &adapterRow->dwForwardNextHop,
 852                        sizeof(DWORD));
 853                 gw->Address.lpSockaddr = (LPSOCKADDR)sin;
 854                 gw->Address.iSockaddrLength = sizeof(SOCKADDR_IN);
 855                 gw->Next = NULL;
 856                 ptr += sizeof(SOCKADDR_IN);
 857             }
 858         }
 859         if (num_v4addrs)
 860         {
 861             IP_ADAPTER_UNICAST_ADDRESS *ua;
 862             struct sockaddr_in *sa;
 863             aa->Flags |= IP_ADAPTER_IPV4_ENABLED;
 864             ua = aa->FirstUnicastAddress = (IP_ADAPTER_UNICAST_ADDRESS *)ptr;
 865             for (i = 0; i < num_v4addrs; i++)
 866             {
 867                 char addr_buf[16];
 868
 869                 memset(ua, 0, sizeof(IP_ADAPTER_UNICAST_ADDRESS));
 870                 ua->u.s.Length              = sizeof(IP_ADAPTER_UNICAST_ADDRESS);
 871                 ua->Address.iSockaddrLength = sizeof(struct sockaddr_in);
 872                 ua->Address.lpSockaddr      = (SOCKADDR *)((char *)ua + ua->u.s.Length);
 873
 874                 sa = (struct sockaddr_in *)ua->Address.lpSockaddr;
 875                 sa->sin_family      = AF_INET;
 876                 sa->sin_addr.s_addr = v4addrs[i];
 877                 sa->sin_port        = 0;
 878                 TRACE("IPv4 %d/%d: %s\n", i + 1, num_v4addrs,
 879                       debugstr_ipv4(&sa->sin_addr.s_addr, addr_buf));
 880
 881                 ptr += ua->u.s.Length + ua->Address.iSockaddrLength;
 882                 if (i < num_v4addrs - 1)
 883                 {
 884                     ua->Next = (IP_ADAPTER_UNICAST_ADDRESS *)ptr;
 885                     ua = ua->Next;
 886                 }
 887             }
 888         }
 889         if (num_v6addrs)
 890         {
 891             IP_ADAPTER_UNICAST_ADDRESS *ua;
 892             struct WS_sockaddr_in6 *sa;
 893
 894             aa->Flags |= IP_ADAPTER_IPV6_ENABLED;
 895             if (aa->FirstUnicastAddress)
 896             {
 897                 for (ua = aa->FirstUnicastAddress; ua->Next; ua = ua->Next)
 898                     ;
 899                 ua->Next = (IP_ADAPTER_UNICAST_ADDRESS *)ptr;
 900                 ua = (IP_ADAPTER_UNICAST_ADDRESS *)ptr;
 901             }
 902             else
 903                 ua = aa->FirstUnicastAddress = (IP_ADAPTER_UNICAST_ADDRESS *)ptr;
 904             for (i = 0; i < num_v6addrs; i++)
 905             {
 906                 char addr_buf[46];
 907
 908                 memset(ua, 0, sizeof(IP_ADAPTER_UNICAST_ADDRESS));
 909                 ua->u.s.Length              = sizeof(IP_ADAPTER_UNICAST_ADDRESS);
 910                 ua->Address.iSockaddrLength = v6addrs[i].iSockaddrLength;
 911                 ua->Address.lpSockaddr      = (SOCKADDR *)((char *)ua + ua->u.s.Length);
 912
 913                 sa = (struct WS_sockaddr_in6 *)ua->Address.lpSockaddr;
 914                 memcpy(sa, v6addrs[i].lpSockaddr, sizeof(*sa));
 915                 TRACE("IPv6 %d/%d: %s\n", i + 1, num_v6addrs,
 916                       debugstr_ipv6(sa, addr_buf));
 917
 918                 ptr += ua->u.s.Length + ua->Address.iSockaddrLength;
 919                 if (i < num_v6addrs - 1)
 920                 {
 921                     ua->Next = (IP_ADAPTER_UNICAST_ADDRESS *)ptr;
 922                     ua = ua->Next;
 923                 }
 924             }
 925         }
 926
 927         buflen = MAX_INTERFACE_PHYSADDR;
 928         getInterfacePhysicalByIndex(index, &buflen, aa->PhysicalAddress, &type);
 929         aa->PhysicalAddressLength = buflen;
 930         aa->IfType = typeFromMibType(type);
 931         aa->ConnectionType = connectionTypeFromMibType(type);
 932
 933         getInterfaceMtuByName(name, &aa->Mtu);
 934
 935         getInterfaceStatusByName(name, &status);
 936         if (status == MIB_IF_OPER_STATUS_OPERATIONAL) aa->OperStatus = IfOperStatusUp;
 937         else if (status == MIB_IF_OPER_STATUS_NON_OPERATIONAL) aa->OperStatus = IfOperStatusDown;
 938         else aa->OperStatus = IfOperStatusUnknown;
 939     }
 940     *size = total_size;
 941     HeapFree(GetProcessHeap(), 0, routeTable);
 942     HeapFree(GetProcessHeap(), 0, v6addrs);
 943     HeapFree(GetProcessHeap(), 0, v4addrs);
 944     return ERROR_SUCCESS;
 945 }
 946
 947 static ULONG get_dns_server_addresses(PIP_ADAPTER_DNS_SERVER_ADDRESS address, ULONG *len)
 948 {
 949     DWORD size;
 950
 951     initialise_resolver();
 952     /* FIXME: no support for IPv6 DNS server addresses.  Doing so requires
 953      * sizeof SOCKADDR_STORAGE instead, and using _res._u._ext.nsaddrs when
 954      * available.
 955      */
 956     size = _res.nscount * (sizeof(IP_ADAPTER_DNS_SERVER_ADDRESS) + sizeof(SOCKADDR));
 957     if (!address || *len < size)
 958     {
 959         *len = size;
 960         return ERROR_BUFFER_OVERFLOW;
 961     }
 962     *len = size;
 963     if (_res.nscount > 0)
 964     {
 965         PIP_ADAPTER_DNS_SERVER_ADDRESS addr;
 966         int i;
 967
 968         for (i = 0, addr = address; i < _res.nscount && addr;
 969              i++, addr = addr->Next)
 970         {
 971             SOCKADDR_IN *sin;
 972
 973             addr->Address.iSockaddrLength = sizeof(SOCKADDR);
 974             addr->Address.lpSockaddr =
 975              (LPSOCKADDR)((PBYTE)addr + sizeof(IP_ADAPTER_DNS_SERVER_ADDRESS));
 976             sin = (SOCKADDR_IN *)addr->Address.lpSockaddr;
 977             sin->sin_family = WS_AF_INET;
 978             sin->sin_port = _res.nsaddr_list[i].sin_port;
 979             memcpy(&sin->sin_addr, &_res.nsaddr_list[i].sin_addr, sizeof(sin->sin_addr));
 980             if (i == _res.nscount - 1)
 981                 addr->Next = NULL;
 982             else
 983                 addr->Next =
 984                  (PIP_ADAPTER_DNS_SERVER_ADDRESS)((PBYTE)addr +
 985                  sizeof(IP_ADAPTER_DNS_SERVER_ADDRESS) + sizeof(SOCKADDR));
 986         }
 987     }
 988     return ERROR_SUCCESS;
 989 }
 990
 991 static BOOL is_ip_address_string(const char *str)
 992 {
 993     struct in_addr in;
 994     int ret;
 995
 996     ret = inet_aton(str, &in);
 997     return ret != 0;
 998 }
 999
1000 static ULONG get_dns_suffix(WCHAR *suffix, ULONG *len)
1001 {
1002     ULONG size, i;
1003     char *found_suffix = NULL;
1004
1005     initialise_resolver();
1006     /* Always return a NULL-terminated string, even if it's empty. */
1007     size = sizeof(WCHAR);
1008     for (i = 0, found_suffix = NULL;
1009          !found_suffix && i < MAXDNSRCH + 1 && _res.dnsrch[i]; i++)
1010     {
1011         /* This uses a heuristic to select a DNS suffix:
1012          * the first, non-IP address string is selected.
1013          */
1014         if (!is_ip_address_string(_res.dnsrch[i]))
1015             found_suffix = _res.dnsrch[i];
1016     }
1017     if (found_suffix)
1018         size += strlen(found_suffix) * sizeof(WCHAR);
1019     if (!suffix || *len < size)
1020     {
1021         *len = size;
1022         return ERROR_BUFFER_OVERFLOW;
1023     }
1024     *len = size;
1025     if (found_suffix)
1026     {
1027         char *p;
1028
1029         for (p = found_suffix; *p; p++)
1030             *suffix++ = *p;
1031     }
1032     *suffix = 0;
1033     return ERROR_SUCCESS;
1034 }
1035
1036 ULONG WINAPI GetAdaptersAddresses(ULONG family, ULONG flags, PVOID reserved,
1037                                   PIP_ADAPTER_ADDRESSES aa, PULONG buflen)
1038 {
1039     InterfaceIndexTable *table;
1040     ULONG i, size, dns_server_size, dns_suffix_size, total_size, ret = ERROR_NO_DATA;
1041
1042     TRACE("(%d, %08x, %p, %p, %p)\n", family, flags, reserved, aa, buflen);
1043
1044     if (!buflen) return ERROR_INVALID_PARAMETER;
1045
1046     table = getInterfaceIndexTable();
1047     if (!table || !table->numIndexes)
1048     {
1049         HeapFree(GetProcessHeap(), 0, table);
1050         return ERROR_NO_DATA;
1051     }
1052     total_size = 0;
1053     for (i = 0; i < table->numIndexes; i++)
1054     {
1055         size = 0;
1056         if ((ret = adapterAddressesFromIndex(family, flags, table->indexes[i], NULL, &size)))
1057         {
1058             HeapFree(GetProcessHeap(), 0, table);
1059             return ret;
1060         }
1061         total_size += size;
1062     }
1063     if (!(flags & GAA_FLAG_SKIP_DNS_SERVER))
1064     {
1065         /* Since DNS servers aren't really per adapter, get enough space for a
1066          * single copy of them.
1067          */
1068         get_dns_server_addresses(NULL, &dns_server_size);
1069         total_size += dns_server_size;
1070     }
1071     /* Since DNS suffix also isn't really per adapter, get enough space for a
1072      * single copy of it.
1073      */
1074     get_dns_suffix(NULL, &dns_suffix_size);
1075     total_size += dns_suffix_size;
1076     if (aa && *buflen >= total_size)
1077     {
1078         ULONG bytes_left = size = total_size;
1079         PIP_ADAPTER_ADDRESSES first_aa = aa;
1080         PIP_ADAPTER_DNS_SERVER_ADDRESS firstDns;
1081         WCHAR *dnsSuffix;
1082
1083         for (i = 0; i < table->numIndexes; i++)
1084         {
1085             if ((ret = adapterAddressesFromIndex(family, flags, table->indexes[i], aa, &size)))
1086             {
1087                 HeapFree(GetProcessHeap(), 0, table);
1088                 return ret;
1089             }
1090             if (i < table->numIndexes - 1)
1091             {
1092                 aa->Next = (IP_ADAPTER_ADDRESSES *)((char *)aa + size);
1093                 aa = aa->Next;
1094                 size = bytes_left -= size;
1095             }
1096         }
1097         if (!(flags & GAA_FLAG_SKIP_DNS_SERVER))
1098         {
1099             firstDns = (PIP_ADAPTER_DNS_SERVER_ADDRESS)((BYTE *)first_aa + total_size - dns_server_size - dns_suffix_size);
1100             get_dns_server_addresses(firstDns, &dns_server_size);
1101             for (aa = first_aa; aa; aa = aa->Next)
1102             {
1103                 if (aa->IfType != IF_TYPE_SOFTWARE_LOOPBACK && aa->OperStatus == IfOperStatusUp)
1104                     aa->FirstDnsServerAddress = firstDns;
1105             }
1106         }
1107         aa = first_aa;
1108         dnsSuffix = (WCHAR *)((BYTE *)aa + total_size - dns_suffix_size);
1109         get_dns_suffix(dnsSuffix, &dns_suffix_size);
1110         for (; aa; aa = aa->Next)
1111         {
1112             if (aa->IfType != IF_TYPE_SOFTWARE_LOOPBACK && aa->OperStatus == IfOperStatusUp)
1113                 aa->DnsSuffix = dnsSuffix;
1114             else
1115                 aa->DnsSuffix = (WCHAR *)((BYTE*)dnsSuffix + dns_suffix_size - 2);
1116         }
1117         ret = ERROR_SUCCESS;
1118     }
1119     else
1120         ret = ERROR_BUFFER_OVERFLOW;
1121     *buflen = total_size;
1122
1123     TRACE("num adapters %u\n", table->numIndexes);
1124     HeapFree(GetProcessHeap(), 0, table);
1125     return ret;
1126 }
1127
1128 /******************************************************************
1129  *    GetBestInterface (IPHLPAPI.@)
1130  *
1131  * Get the interface, with the best route for the given IP address.
1132  *
1133  * PARAMS
1134  *  dwDestAddr     [In]  IP address to search the interface for
1135  *  pdwBestIfIndex [Out] found best interface
1136  *
1137  * RETURNS
1138  *  Success: NO_ERROR
1139  *  Failure: error code from winerror.h
1140  */
1141 DWORD WINAPI GetBestInterface(IPAddr dwDestAddr, PDWORD pdwBestIfIndex)
1142 {
1143     struct WS_sockaddr_in sa_in;
1144     memset(&sa_in, 0, sizeof(sa_in));
1145     sa_in.sin_family = AF_INET;
1146     sa_in.sin_addr.S_un.S_addr = dwDestAddr;
1147     return GetBestInterfaceEx((struct WS_sockaddr *)&sa_in, pdwBestIfIndex);
1148 }
1149
1150 /******************************************************************
1151  *    GetBestInterfaceEx (IPHLPAPI.@)
1152  *
1153  * Get the interface, with the best route for the given IP address.
1154  *
1155  * PARAMS
1156  *  dwDestAddr     [In]  IP address to search the interface for
1157  *  pdwBestIfIndex [Out] found best interface
1158  *
1159  * RETURNS
1160  *  Success: NO_ERROR
1161  *  Failure: error code from winerror.h
1162  */
1163 DWORD WINAPI GetBestInterfaceEx(struct WS_sockaddr *pDestAddr, PDWORD pdwBestIfIndex)
1164 {
1165   DWORD ret;
1166
1167   TRACE("pDestAddr %p, pdwBestIfIndex %p\n", pDestAddr, pdwBestIfIndex);
1168   if (!pDestAddr || !pdwBestIfIndex)
1169     ret = ERROR_INVALID_PARAMETER;
1170   else {
1171     MIB_IPFORWARDROW ipRow;
1172
1173     if (pDestAddr->sa_family == AF_INET) {
1174       ret = GetBestRoute(((struct WS_sockaddr_in *)pDestAddr)->sin_addr.S_un.S_addr, 0, &ipRow);
1175       if (ret == ERROR_SUCCESS)
1176         *pdwBestIfIndex = ipRow.dwForwardIfIndex;
1177     } else {
1178       FIXME("address family %d not supported\n", pDestAddr->sa_family);
1179       ret = ERROR_NOT_SUPPORTED;
1180     }
1181   }
1182   TRACE("returning %d\n", ret);
1183   return ret;
1184 }
1185
1186
1187 /******************************************************************
1188  *    GetBestRoute (IPHLPAPI.@)
1189  *
1190  * Get the best route for the given IP address.
1191  *
1192  * PARAMS
1193  *  dwDestAddr   [In]  IP address to search the best route for
1194  *  dwSourceAddr [In]  optional source IP address
1195  *  pBestRoute   [Out] found best route
1196  *
1197  * RETURNS
1198  *  Success: NO_ERROR
1199  *  Failure: error code from winerror.h
1200  */
1201 DWORD WINAPI GetBestRoute(DWORD dwDestAddr, DWORD dwSourceAddr, PMIB_IPFORWARDROW pBestRoute)
1202 {
1203   PMIB_IPFORWARDTABLE table;
1204   DWORD ret;
1205
1206   TRACE("dwDestAddr 0x%08x, dwSourceAddr 0x%08x, pBestRoute %p\n", dwDestAddr,
1207    dwSourceAddr, pBestRoute);
1208   if (!pBestRoute)
1209     return ERROR_INVALID_PARAMETER;
1210
1211   ret = AllocateAndGetIpForwardTableFromStack(&table, FALSE, GetProcessHeap(), 0);
1212   if (!ret) {
1213     DWORD ndx, matchedBits, matchedNdx = table->dwNumEntries;
1214
1215     for (ndx = 0, matchedBits = 0; ndx < table->dwNumEntries; ndx++) {
1216       if (table->table[ndx].dwForwardType != MIB_IPROUTE_TYPE_INVALID &&
1217        (dwDestAddr & table->table[ndx].dwForwardMask) ==
1218        (table->table[ndx].dwForwardDest & table->table[ndx].dwForwardMask)) {
1219         DWORD numShifts, mask;
1220
1221         for (numShifts = 0, mask = table->table[ndx].dwForwardMask;
1222          mask && mask & 1; mask >>= 1, numShifts++)
1223           ;
1224         if (numShifts > matchedBits) {
1225           matchedBits = numShifts;
1226           matchedNdx = ndx;
1227         }
1228         else if (!matchedBits) {
1229           matchedNdx = ndx;
1230         }
1231       }
1232     }
1233     if (matchedNdx < table->dwNumEntries) {
1234       memcpy(pBestRoute, &table->table[matchedNdx], sizeof(MIB_IPFORWARDROW));
1235       ret = ERROR_SUCCESS;
1236     }
1237     else {
1238       /* No route matches, which can happen if there's no default route. */
1239       ret = ERROR_HOST_UNREACHABLE;
1240     }
1241     HeapFree(GetProcessHeap(), 0, table);
1242   }
1243   TRACE("returning %d\n", ret);
1244   return ret;
1245 }
1246
1247
1248 /******************************************************************
1249  *    GetFriendlyIfIndex (IPHLPAPI.@)
1250  *
1251  * Get a "friendly" version of IfIndex, which is one that doesn't
1252  * have the top byte set.  Doesn't validate whether IfIndex is a valid
1253  * adapter index.
1254  *
1255  * PARAMS
1256  *  IfIndex [In] interface index to get the friendly one for
1257  *
1258  * RETURNS
1259  *  A friendly version of IfIndex.
1260  */
1261 DWORD WINAPI GetFriendlyIfIndex(DWORD IfIndex)
1262 {
1263   /* windows doesn't validate these, either, just makes sure the top byte is
1264      cleared.  I assume my ifenum module never gives an index with the top
1265      byte set. */
1266   TRACE("returning %d\n", IfIndex);
1267   return IfIndex;
1268 }
1269
1270
1271 /******************************************************************
1272  *    GetIfEntry (IPHLPAPI.@)
1273  *
1274  * Get information about an interface.
1275  *
1276  * PARAMS
1277  *  pIfRow [In/Out] In:  dwIndex of MIB_IFROW selects the interface.
1278  *                  Out: interface information
1279  *
1280  * RETURNS
1281  *  Success: NO_ERROR
1282  *  Failure: error code from winerror.h
1283  */
1284 DWORD WINAPI GetIfEntry(PMIB_IFROW pIfRow)
1285 {
1286   DWORD ret;
1287   char nameBuf[MAX_ADAPTER_NAME];
1288   char *name;
1289
1290   TRACE("pIfRow %p\n", pIfRow);
1291   if (!pIfRow)
1292     return ERROR_INVALID_PARAMETER;
1293
1294   name = getInterfaceNameByIndex(pIfRow->dwIndex, nameBuf);
1295   if (name) {
1296     ret = getInterfaceEntryByName(name, pIfRow);
1297     if (ret == NO_ERROR)
1298       ret = getInterfaceStatsByName(name, pIfRow);
1299   }
1300   else
1301     ret = ERROR_INVALID_DATA;
1302   TRACE("returning %d\n", ret);
1303   return ret;
1304 }
1305
1306
1307 static int IfTableSorter(const void *a, const void *b)
1308 {
1309   int ret;
1310
1311   if (a && b)
1312     ret = ((const MIB_IFROW*)a)->dwIndex - ((const MIB_IFROW*)b)->dwIndex;
1313   else
1314     ret = 0;
1315   return ret;
1316 }
1317
1318
1319 /******************************************************************
1320  *    GetIfTable (IPHLPAPI.@)
1321  *
1322  * Get a table of local interfaces.
1323  *
1324  * PARAMS
1325  *  pIfTable [Out]    buffer for local interfaces table
1326  *  pdwSize  [In/Out] length of output buffer
1327  *  bOrder   [In]     whether to sort the table
1328  *
1329  * RETURNS
1330  *  Success: NO_ERROR
1331  *  Failure: error code from winerror.h
1332  *
1333  * NOTES
1334  *  If pdwSize is less than required, the function will return
1335  *  ERROR_INSUFFICIENT_BUFFER, and *pdwSize will be set to the required byte
1336  *  size.
1337  *  If bOrder is true, the returned table will be sorted by interface index.
1338  */
1339 DWORD WINAPI GetIfTable(PMIB_IFTABLE pIfTable, PULONG pdwSize, BOOL bOrder)
1340 {
1341   DWORD ret;
1342
1343   TRACE("pIfTable %p, pdwSize %p, bOrder %d\n", pdwSize, pdwSize,
1344    (DWORD)bOrder);
1345   if (!pdwSize)
1346     ret = ERROR_INVALID_PARAMETER;
1347   else {
1348     DWORD numInterfaces = getNumInterfaces();
1349     ULONG size = sizeof(MIB_IFTABLE);
1350
1351     if (numInterfaces > 1)
1352       size += (numInterfaces - 1) * sizeof(MIB_IFROW);
1353     if (!pIfTable || *pdwSize < size) {
1354       *pdwSize = size;
1355       ret = ERROR_INSUFFICIENT_BUFFER;
1356     }
1357     else {
1358       InterfaceIndexTable *table = getInterfaceIndexTable();
1359
1360       if (table) {
1361         size = sizeof(MIB_IFTABLE);
1362         if (table->numIndexes > 1)
1363           size += (table->numIndexes - 1) * sizeof(MIB_IFROW);
1364         if (*pdwSize < size) {
1365           *pdwSize = size;
1366           ret = ERROR_INSUFFICIENT_BUFFER;
1367         }
1368         else {
1369           DWORD ndx;
1370
1371           *pdwSize = size;
1372           pIfTable->dwNumEntries = 0;
1373           for (ndx = 0; ndx < table->numIndexes; ndx++) {
1374             pIfTable->table[ndx].dwIndex = table->indexes[ndx];
1375             GetIfEntry(&pIfTable->table[ndx]);
1376             pIfTable->dwNumEntries++;
1377           }
1378           if (bOrder)
1379             qsort(pIfTable->table, pIfTable->dwNumEntries, sizeof(MIB_IFROW),
1380              IfTableSorter);
1381           ret = NO_ERROR;
1382         }
1383         HeapFree(GetProcessHeap(), 0, table);
1384       }
1385       else
1386         ret = ERROR_OUTOFMEMORY;
1387     }
1388   }
1389   TRACE("returning %d\n", ret);
1390   return ret;
1391 }
1392
1393
1394 /******************************************************************
1395  *    GetInterfaceInfo (IPHLPAPI.@)
1396  *
1397  * Get a list of network interface adapters.
1398  *
1399  * PARAMS
1400  *  pIfTable    [Out] buffer for interface adapters
1401  *  dwOutBufLen [Out] if buffer is too small, returns required size
1402  *
1403  * RETURNS
1404  *  Success: NO_ERROR
1405  *  Failure: error code from winerror.h
1406  *
1407  * BUGS
1408  *  MSDN states this should return non-loopback interfaces only.
1409  */
1410 DWORD WINAPI GetInterfaceInfo(PIP_INTERFACE_INFO pIfTable, PULONG dwOutBufLen)
1411 {
1412   DWORD ret;
1413
1414   TRACE("pIfTable %p, dwOutBufLen %p\n", pIfTable, dwOutBufLen);
1415   if (!dwOutBufLen)
1416     ret = ERROR_INVALID_PARAMETER;
1417   else {
1418     DWORD numInterfaces = getNumInterfaces();
1419     ULONG size = sizeof(IP_INTERFACE_INFO);
1420
1421     if (numInterfaces > 1)
1422       size += (numInterfaces - 1) * sizeof(IP_ADAPTER_INDEX_MAP);
1423     if (!pIfTable || *dwOutBufLen < size) {
1424       *dwOutBufLen = size;
1425       ret = ERROR_INSUFFICIENT_BUFFER;
1426     }
1427     else {
1428       InterfaceIndexTable *table = getInterfaceIndexTable();
1429
1430       if (table) {
1431         size = sizeof(IP_INTERFACE_INFO);
1432         if (table->numIndexes > 1)
1433           size += (table->numIndexes - 1) * sizeof(IP_ADAPTER_INDEX_MAP);
1434         if (*dwOutBufLen < size) {
1435           *dwOutBufLen = size;
1436           ret = ERROR_INSUFFICIENT_BUFFER;
1437         }
1438         else {
1439           DWORD ndx;
1440           char nameBuf[MAX_ADAPTER_NAME];
1441
1442           *dwOutBufLen = size;
1443           pIfTable->NumAdapters = 0;
1444           for (ndx = 0; ndx < table->numIndexes; ndx++) {
1445             const char *walker, *name;
1446             WCHAR *assigner;
1447
1448             pIfTable->Adapter[ndx].Index = table->indexes[ndx];
1449             name = getInterfaceNameByIndex(table->indexes[ndx], nameBuf);
1450             for (walker = name, assigner = pIfTable->Adapter[ndx].Name;
1451              walker && *walker &&
1452              assigner - pIfTable->Adapter[ndx].Name < MAX_ADAPTER_NAME - 1;
1453              walker++, assigner++)
1454               *assigner = *walker;
1455             *assigner = 0;
1456             pIfTable->NumAdapters++;
1457           }
1458           ret = NO_ERROR;
1459         }
1460         HeapFree(GetProcessHeap(), 0, table);
1461       }
1462       else
1463         ret = ERROR_OUTOFMEMORY;
1464     }
1465   }
1466   TRACE("returning %d\n", ret);
1467   return ret;
1468 }
1469
1470
1471 /******************************************************************
1472  *    GetIpAddrTable (IPHLPAPI.@)
1473  *
1474  * Get interface-to-IP address mapping table.
1475  *
1476  * PARAMS
1477  *  pIpAddrTable [Out]    buffer for mapping table
1478  *  pdwSize      [In/Out] length of output buffer
1479  *  bOrder       [In]     whether to sort the table
1480  *
1481  * RETURNS
1482  *  Success: NO_ERROR
1483  *  Failure: error code from winerror.h
1484  *
1485  * NOTES
1486  *  If pdwSize is less than required, the function will return
1487  *  ERROR_INSUFFICIENT_BUFFER, and *pdwSize will be set to the required byte
1488  *  size.
1489  *  If bOrder is true, the returned table will be sorted by the next hop and
1490  *  an assortment of arbitrary parameters.
1491  */
1492 DWORD WINAPI GetIpAddrTable(PMIB_IPADDRTABLE pIpAddrTable, PULONG pdwSize, BOOL bOrder)
1493 {
1494   DWORD ret;
1495
1496   TRACE("pIpAddrTable %p, pdwSize %p, bOrder %d\n", pIpAddrTable, pdwSize,
1497    (DWORD)bOrder);
1498   if (!pdwSize)
1499     ret = ERROR_INVALID_PARAMETER;
1500   else {
1501     PMIB_IPADDRTABLE table;
1502
1503     ret = getIPAddrTable(&table, GetProcessHeap(), 0);
1504     if (ret == NO_ERROR)
1505     {
1506       ULONG size = sizeof(MIB_IPADDRTABLE);
1507
1508       if (table->dwNumEntries > 1)
1509         size += (table->dwNumEntries - 1) * sizeof(MIB_IPADDRROW);
1510       if (!pIpAddrTable || *pdwSize < size) {
1511         *pdwSize = size;
1512         ret = ERROR_INSUFFICIENT_BUFFER;
1513       }
1514       else {
1515         *pdwSize = size;
1516         memcpy(pIpAddrTable, table, size);
1517         if (bOrder)
1518           qsort(pIpAddrTable->table, pIpAddrTable->dwNumEntries,
1519            sizeof(MIB_IPADDRROW), IpAddrTableSorter);
1520         ret = NO_ERROR;
1521       }
1522       HeapFree(GetProcessHeap(), 0, table);
1523     }
1524   }
1525   TRACE("returning %d\n", ret);
1526   return ret;
1527 }
1528
1529
1530 /******************************************************************
1531  *    GetIpForwardTable (IPHLPAPI.@)
1532  *
1533  * Get the route table.
1534  *
1535  * PARAMS
1536  *  pIpForwardTable [Out]    buffer for route table
1537  *  pdwSize         [In/Out] length of output buffer
1538  *  bOrder          [In]     whether to sort the table
1539  *
1540  * RETURNS
1541  *  Success: NO_ERROR
1542  *  Failure: error code from winerror.h
1543  *
1544  * NOTES
1545  *  If pdwSize is less than required, the function will return
1546  *  ERROR_INSUFFICIENT_BUFFER, and *pdwSize will be set to the required byte
1547  *  size.
1548  *  If bOrder is true, the returned table will be sorted by the next hop and
1549  *  an assortment of arbitrary parameters.
1550  */
1551 DWORD WINAPI GetIpForwardTable(PMIB_IPFORWARDTABLE pIpForwardTable, PULONG pdwSize, BOOL bOrder)
1552 {
1553     DWORD ret;
1554     PMIB_IPFORWARDTABLE table;
1555
1556     TRACE("pIpForwardTable %p, pdwSize %p, bOrder %d\n", pIpForwardTable, pdwSize, bOrder);
1557
1558     if (!pdwSize) return ERROR_INVALID_PARAMETER;
1559
1560     ret = AllocateAndGetIpForwardTableFromStack(&table, bOrder, GetProcessHeap(), 0);
1561     if (!ret) {
1562         DWORD size = FIELD_OFFSET( MIB_IPFORWARDTABLE, table[table->dwNumEntries] );
1563         if (!pIpForwardTable || *pdwSize < size) {
1564           *pdwSize = size;
1565           ret = ERROR_INSUFFICIENT_BUFFER;
1566         }
1567         else {
1568           *pdwSize = size;
1569           memcpy(pIpForwardTable, table, size);
1570         }
1571         HeapFree(GetProcessHeap(), 0, table);
1572     }
1573     TRACE("returning %d\n", ret);
1574     return ret;
1575 }
1576
1577
1578 /******************************************************************
1579  *    GetIpNetTable (IPHLPAPI.@)
1580  *
1581  * Get the IP-to-physical address mapping table.
1582  *
1583  * PARAMS
1584  *  pIpNetTable [Out]    buffer for mapping table
1585  *  pdwSize     [In/Out] length of output buffer
1586  *  bOrder      [In]     whether to sort the table
1587  *
1588  * RETURNS
1589  *  Success: NO_ERROR
1590  *  Failure: error code from winerror.h
1591  *
1592  * NOTES
1593  *  If pdwSize is less than required, the function will return
1594  *  ERROR_INSUFFICIENT_BUFFER, and *pdwSize will be set to the required byte
1595  *  size.
1596  *  If bOrder is true, the returned table will be sorted by IP address.
1597  */
1598 DWORD WINAPI GetIpNetTable(PMIB_IPNETTABLE pIpNetTable, PULONG pdwSize, BOOL bOrder)
1599 {
1600     DWORD ret;
1601     PMIB_IPNETTABLE table;
1602
1603     TRACE("pIpNetTable %p, pdwSize %p, bOrder %d\n", pIpNetTable, pdwSize, bOrder);
1604
1605     if (!pdwSize) return ERROR_INVALID_PARAMETER;
1606
1607     ret = AllocateAndGetIpNetTableFromStack( &table, bOrder, GetProcessHeap(), 0 );
1608     if (!ret) {
1609         DWORD size = FIELD_OFFSET( MIB_IPNETTABLE, table[table->dwNumEntries] );
1610         if (!pIpNetTable || *pdwSize < size) {
1611           *pdwSize = size;
1612           ret = ERROR_INSUFFICIENT_BUFFER;
1613         }
1614         else {
1615           *pdwSize = size;
1616           memcpy(pIpNetTable, table, size);
1617         }
1618         HeapFree(GetProcessHeap(), 0, table);
1619     }
1620     TRACE("returning %d\n", ret);
1621     return ret;
1622 }
1623
1624 /* Gets the DNS server list into the list beginning at list.  Assumes that
1625  * a single server address may be placed at list if *len is at least
1626  * sizeof(IP_ADDR_STRING) long.  Otherwise, list->Next is set to firstDynamic,
1627  * and assumes that all remaining DNS servers are contiguously located
1628  * beginning at firstDynamic.  On input, *len is assumed to be the total number
1629  * of bytes available for all DNS servers, and is ignored if list is NULL.
1630  * On return, *len is set to the total number of bytes required for all DNS
1631  * servers.
1632  * Returns ERROR_BUFFER_OVERFLOW if *len is insufficient,
1633  * ERROR_SUCCESS otherwise.
1634  */
1635 static DWORD get_dns_server_list(PIP_ADDR_STRING list,
1636  PIP_ADDR_STRING firstDynamic, DWORD *len)
1637 {
1638   DWORD size;
1639
1640   initialise_resolver();
1641   size = _res.nscount * sizeof(IP_ADDR_STRING);
1642   if (!list || *len < size) {
1643     *len = size;
1644     return ERROR_BUFFER_OVERFLOW;
1645   }
1646   *len = size;
1647   if (_res.nscount > 0) {
1648     PIP_ADDR_STRING ptr;
1649     int i;
1650
1651     for (i = 0, ptr = list; i < _res.nscount && ptr; i++, ptr = ptr->Next) {
1652       toIPAddressString(_res.nsaddr_list[i].sin_addr.s_addr,
1653        ptr->IpAddress.String);
1654       if (i == _res.nscount - 1)
1655         ptr->Next = NULL;
1656       else if (i == 0)
1657         ptr->Next = firstDynamic;
1658       else
1659         ptr->Next = (PIP_ADDR_STRING)((PBYTE)ptr + sizeof(IP_ADDR_STRING));
1660     }
1661   }
1662   return ERROR_SUCCESS;
1663 }
1664
1665 /******************************************************************
1666  *    GetNetworkParams (IPHLPAPI.@)
1667  *
1668  * Get the network parameters for the local computer.
1669  *
1670  * PARAMS
1671  *  pFixedInfo [Out]    buffer for network parameters
1672  *  pOutBufLen [In/Out] length of output buffer
1673  *
1674  * RETURNS
1675  *  Success: NO_ERROR
1676  *  Failure: error code from winerror.h
1677  *
1678  * NOTES
1679  *  If pOutBufLen is less than required, the function will return
1680  *  ERROR_INSUFFICIENT_BUFFER, and pOutBufLen will be set to the required byte
1681  *  size.
1682  */
1683 DWORD WINAPI GetNetworkParams(PFIXED_INFO pFixedInfo, PULONG pOutBufLen)
1684 {
1685   DWORD ret, size, serverListSize;
1686   LONG regReturn;
1687   HKEY hKey;
1688
1689   TRACE("pFixedInfo %p, pOutBufLen %p\n", pFixedInfo, pOutBufLen);
1690   if (!pOutBufLen)
1691     return ERROR_INVALID_PARAMETER;
1692
1693   get_dns_server_list(NULL, NULL, &serverListSize);
1694   size = sizeof(FIXED_INFO) + serverListSize - sizeof(IP_ADDR_STRING);
1695   if (!pFixedInfo || *pOutBufLen < size) {
1696     *pOutBufLen = size;
1697     return ERROR_BUFFER_OVERFLOW;
1698   }
1699
1700   memset(pFixedInfo, 0, size);
1701   size = sizeof(pFixedInfo->HostName);
1702   GetComputerNameExA(ComputerNameDnsHostname, pFixedInfo->HostName, &size);
1703   size = sizeof(pFixedInfo->DomainName);
1704   GetComputerNameExA(ComputerNameDnsDomain, pFixedInfo->DomainName, &size);
1705   get_dns_server_list(&pFixedInfo->DnsServerList,
1706    (PIP_ADDR_STRING)((BYTE *)pFixedInfo + sizeof(FIXED_INFO)),
1707    &serverListSize);
1708   /* Assume the first DNS server in the list is the "current" DNS server: */
1709   pFixedInfo->CurrentDnsServer = &pFixedInfo->DnsServerList;
1710   pFixedInfo->NodeType = HYBRID_NODETYPE;
1711   regReturn = RegOpenKeyExA(HKEY_LOCAL_MACHINE,
1712    "SYSTEM\\CurrentControlSet\\Services\\VxD\\MSTCP", 0, KEY_READ, &hKey);
1713   if (regReturn != ERROR_SUCCESS)
1714     regReturn = RegOpenKeyExA(HKEY_LOCAL_MACHINE,
1715      "SYSTEM\\CurrentControlSet\\Services\\NetBT\\Parameters", 0, KEY_READ,
1716      &hKey);
1717   if (regReturn == ERROR_SUCCESS)
1718   {
1719     DWORD size = sizeof(pFixedInfo->ScopeId);
1720
1721     RegQueryValueExA(hKey, "ScopeID", NULL, NULL, (LPBYTE)pFixedInfo->ScopeId, &size);
1722     RegCloseKey(hKey);
1723   }
1724
1725   /* FIXME: can check whether routing's enabled in /proc/sys/net/ipv4/ip_forward
1726      I suppose could also check for a listener on port 53 to set EnableDns */
1727   ret = NO_ERROR;
1728   TRACE("returning %d\n", ret);
1729   return ret;
1730 }
1731
1732
1733 /******************************************************************
1734  *    GetNumberOfInterfaces (IPHLPAPI.@)
1735  *
1736  * Get the number of interfaces.
1737  *
1738  * PARAMS
1739  *  pdwNumIf [Out] number of interfaces
1740  *
1741  * RETURNS
1742  *  NO_ERROR on success, ERROR_INVALID_PARAMETER if pdwNumIf is NULL.
1743  */
1744 DWORD WINAPI GetNumberOfInterfaces(PDWORD pdwNumIf)
1745 {
1746   DWORD ret;
1747
1748   TRACE("pdwNumIf %p\n", pdwNumIf);
1749   if (!pdwNumIf)
1750     ret = ERROR_INVALID_PARAMETER;
1751   else {
1752     *pdwNumIf = getNumInterfaces();
1753     ret = NO_ERROR;
1754   }
1755   TRACE("returning %d\n", ret);
1756   return ret;
1757 }
1758
1759
1760 /******************************************************************
1761  *    GetPerAdapterInfo (IPHLPAPI.@)
1762  *
1763  * Get information about an adapter corresponding to an interface.
1764  *
1765  * PARAMS
1766  *  IfIndex         [In]     interface info
1767  *  pPerAdapterInfo [Out]    buffer for per adapter info
1768  *  pOutBufLen      [In/Out] length of output buffer
1769  *
1770  * RETURNS
1771  *  Success: NO_ERROR
1772  *  Failure: error code from winerror.h
1773  */
1774 DWORD WINAPI GetPerAdapterInfo(ULONG IfIndex, PIP_PER_ADAPTER_INFO pPerAdapterInfo, PULONG pOutBufLen)
1775 {
1776   ULONG bytesNeeded = sizeof(IP_PER_ADAPTER_INFO), serverListSize = 0;
1777   DWORD ret = NO_ERROR;
1778
1779   TRACE("(IfIndex %d, pPerAdapterInfo %p, pOutBufLen %p)\n", IfIndex, pPerAdapterInfo, pOutBufLen);
1780
1781   if (!pOutBufLen) return ERROR_INVALID_PARAMETER;
1782
1783   if (!isIfIndexLoopback(IfIndex)) {
1784     get_dns_server_list(NULL, NULL, &serverListSize);
1785     if (serverListSize > sizeof(IP_ADDR_STRING))
1786       bytesNeeded += serverListSize - sizeof(IP_ADDR_STRING);
1787   }
1788   if (!pPerAdapterInfo || *pOutBufLen < bytesNeeded)
1789   {
1790     *pOutBufLen = bytesNeeded;
1791     return ERROR_BUFFER_OVERFLOW;
1792   }
1793
1794   memset(pPerAdapterInfo, 0, bytesNeeded);
1795   if (!isIfIndexLoopback(IfIndex)) {
1796     ret = get_dns_server_list(&pPerAdapterInfo->DnsServerList,
1797      (PIP_ADDR_STRING)((PBYTE)pPerAdapterInfo + sizeof(IP_PER_ADAPTER_INFO)),
1798      &serverListSize);
1799     /* Assume the first DNS server in the list is the "current" DNS server: */
1800     pPerAdapterInfo->CurrentDnsServer = &pPerAdapterInfo->DnsServerList;
1801   }
1802   return ret;
1803 }
1804
1805
1806 /******************************************************************
1807  *    GetRTTAndHopCount (IPHLPAPI.@)
1808  *
1809  * Get round-trip time (RTT) and hop count.
1810  *
1811  * PARAMS
1812  *
1813  *  DestIpAddress [In]  destination address to get the info for
1814  *  HopCount      [Out] retrieved hop count
1815  *  MaxHops       [In]  maximum hops to search for the destination
1816  *  RTT           [Out] RTT in milliseconds
1817  *
1818  * RETURNS
1819  *  Success: TRUE
1820  *  Failure: FALSE
1821  *
1822  * FIXME
1823  *  Stub, returns FALSE.
1824  */
1825 BOOL WINAPI GetRTTAndHopCount(IPAddr DestIpAddress, PULONG HopCount, ULONG MaxHops, PULONG RTT)
1826 {
1827   FIXME("(DestIpAddress 0x%08x, HopCount %p, MaxHops %d, RTT %p): stub\n",
1828    DestIpAddress, HopCount, MaxHops, RTT);
1829   return FALSE;
1830 }
1831
1832
1833 /******************************************************************
1834  *    GetTcpTable (IPHLPAPI.@)
1835  *
1836  * Get the table of active TCP connections.
1837  *
1838  * PARAMS
1839  *  pTcpTable [Out]    buffer for TCP connections table
1840  *  pdwSize   [In/Out] length of output buffer
1841  *  bOrder    [In]     whether to order the table
1842  *
1843  * RETURNS
1844  *  Success: NO_ERROR
1845  *  Failure: error code from winerror.h
1846  *
1847  * NOTES
1848  *  If pdwSize is less than required, the function will return
1849  *  ERROR_INSUFFICIENT_BUFFER, and *pdwSize will be set to
1850  *  the required byte size.
1851  *  If bOrder is true, the returned table will be sorted, first by
1852  *  local address and port number, then by remote address and port
1853  *  number.
1854  */
1855 DWORD WINAPI GetTcpTable(PMIB_TCPTABLE pTcpTable, PDWORD pdwSize, BOOL bOrder)
1856 {
1857     DWORD ret;
1858     PMIB_TCPTABLE table;
1859
1860     TRACE("pTcpTable %p, pdwSize %p, bOrder %d\n", pTcpTable, pdwSize, bOrder);
1861
1862     if (!pdwSize) return ERROR_INVALID_PARAMETER;
1863
1864     ret = AllocateAndGetTcpTableFromStack(&table, bOrder, GetProcessHeap(), 0);
1865     if (!ret) {
1866         DWORD size = FIELD_OFFSET( MIB_TCPTABLE, table[table->dwNumEntries] );
1867         if (!pTcpTable || *pdwSize < size) {
1868           *pdwSize = size;
1869           ret = ERROR_INSUFFICIENT_BUFFER;
1870         }
1871         else {
1872           *pdwSize = size;
1873           memcpy(pTcpTable, table, size);
1874         }
1875         HeapFree(GetProcessHeap(), 0, table);
1876     }
1877     TRACE("returning %d\n", ret);
1878     return ret;
1879 }
1880
1881
1882 /******************************************************************
1883  *    GetUdpTable (IPHLPAPI.@)
1884  *
1885  * Get a table of active UDP connections.
1886  *
1887  * PARAMS
1888  *  pUdpTable [Out]    buffer for UDP connections table
1889  *  pdwSize   [In/Out] length of output buffer
1890  *  bOrder    [In]     whether to order the table
1891  *
1892  * RETURNS
1893  *  Success: NO_ERROR
1894  *  Failure: error code from winerror.h
1895  *
1896  * NOTES
1897  *  If pdwSize is less than required, the function will return
1898  *  ERROR_INSUFFICIENT_BUFFER, and *pdwSize will be set to the
1899  *  required byte size.
1900  *  If bOrder is true, the returned table will be sorted, first by
1901  *  local address, then by local port number.
1902  */
1903 DWORD WINAPI GetUdpTable(PMIB_UDPTABLE pUdpTable, PDWORD pdwSize, BOOL bOrder)
1904 {
1905     DWORD ret;
1906     PMIB_UDPTABLE table;
1907
1908     TRACE("pUdpTable %p, pdwSize %p, bOrder %d\n", pUdpTable, pdwSize, bOrder);
1909
1910     if (!pdwSize) return ERROR_INVALID_PARAMETER;
1911
1912     ret = AllocateAndGetUdpTableFromStack( &table, bOrder, GetProcessHeap(), 0 );
1913     if (!ret) {
1914         DWORD size = FIELD_OFFSET( MIB_UDPTABLE, table[table->dwNumEntries] );
1915         if (!pUdpTable || *pdwSize < size) {
1916           *pdwSize = size;
1917           ret = ERROR_INSUFFICIENT_BUFFER;
1918         }
1919         else {
1920           *pdwSize = size;
1921           memcpy(pUdpTable, table, size);
1922         }
1923         HeapFree(GetProcessHeap(), 0, table);
1924     }
1925     TRACE("returning %d\n", ret);
1926     return ret;
1927 }
1928
1929
1930 /******************************************************************
1931  *    GetUniDirectionalAdapterInfo (IPHLPAPI.@)
1932  *
1933  * This is a Win98-only function to get information on "unidirectional"
1934  * adapters.  Since this is pretty nonsensical in other contexts, it
1935  * never returns anything.
1936  *
1937  * PARAMS
1938  *  pIPIfInfo   [Out] buffer for adapter infos
1939  *  dwOutBufLen [Out] length of the output buffer
1940  *
1941  * RETURNS
1942  *  Success: NO_ERROR
1943  *  Failure: error code from winerror.h
1944  *
1945  * FIXME
1946  *  Stub, returns ERROR_NOT_SUPPORTED.
1947  */
1948 DWORD WINAPI GetUniDirectionalAdapterInfo(PIP_UNIDIRECTIONAL_ADAPTER_ADDRESS pIPIfInfo, PULONG dwOutBufLen)
1949 {
1950   TRACE("pIPIfInfo %p, dwOutBufLen %p\n", pIPIfInfo, dwOutBufLen);
1951   /* a unidirectional adapter?? not bloody likely! */
1952   return ERROR_NOT_SUPPORTED;
1953 }
1954
1955
1956 /******************************************************************
1957  *    IpReleaseAddress (IPHLPAPI.@)
1958  *
1959  * Release an IP obtained through DHCP,
1960  *
1961  * PARAMS
1962  *  AdapterInfo [In] adapter to release IP address
1963  *
1964  * RETURNS
1965  *  Success: NO_ERROR
1966  *  Failure: error code from winerror.h
1967  *
1968  * NOTES
1969  *  Since GetAdaptersInfo never returns adapters that have DHCP enabled,
1970  *  this function does nothing.
1971  *
1972  * FIXME
1973  *  Stub, returns ERROR_NOT_SUPPORTED.
1974  */
1975 DWORD WINAPI IpReleaseAddress(PIP_ADAPTER_INDEX_MAP AdapterInfo)
1976 {
1977   TRACE("AdapterInfo %p\n", AdapterInfo);
1978   /* not a stub, never going to support this (and I never mark an adapter as
1979      DHCP enabled, see GetAdaptersInfo, so this should never get called) */
1980   return ERROR_NOT_SUPPORTED;
1981 }
1982
1983
1984 /******************************************************************
1985  *    IpRenewAddress (IPHLPAPI.@)
1986  *
1987  * Renew an IP obtained through DHCP.
1988  *
1989  * PARAMS
1990  *  AdapterInfo [In] adapter to renew IP address
1991  *
1992  * RETURNS
1993  *  Success: NO_ERROR
1994  *  Failure: error code from winerror.h
1995  *
1996  * NOTES
1997  *  Since GetAdaptersInfo never returns adapters that have DHCP enabled,
1998  *  this function does nothing.
1999  *
2000  * FIXME
2001  *  Stub, returns ERROR_NOT_SUPPORTED.
2002  */
2003 DWORD WINAPI IpRenewAddress(PIP_ADAPTER_INDEX_MAP AdapterInfo)
2004 {
2005   TRACE("AdapterInfo %p\n", AdapterInfo);
2006   /* not a stub, never going to support this (and I never mark an adapter as
2007      DHCP enabled, see GetAdaptersInfo, so this should never get called) */
2008   return ERROR_NOT_SUPPORTED;
2009 }
2010
2011
2012 /******************************************************************
2013  *    NotifyAddrChange (IPHLPAPI.@)
2014  *
2015  * Notify caller whenever the ip-interface map is changed.
2016  *
2017  * PARAMS
2018  *  Handle     [Out] handle usable in asynchronous notification
2019  *  overlapped [In]  overlapped structure that notifies the caller
2020  *
2021  * RETURNS
2022  *  Success: NO_ERROR
2023  *  Failure: error code from winerror.h
2024  *
2025  * FIXME
2026  *  Stub, returns ERROR_NOT_SUPPORTED.
2027  */
2028 DWORD WINAPI NotifyAddrChange(PHANDLE Handle, LPOVERLAPPED overlapped)
2029 {
2030   FIXME("(Handle %p, overlapped %p): stub\n", Handle, overlapped);
2031   if (Handle) *Handle = INVALID_HANDLE_VALUE;
2032   if (overlapped) ((IO_STATUS_BLOCK *) overlapped)->u.Status = STATUS_PENDING;
2033   return ERROR_IO_PENDING;
2034 }
2035
2036
2037 /******************************************************************
2038  *    NotifyRouteChange (IPHLPAPI.@)
2039  *
2040  * Notify caller whenever the ip routing table is changed.
2041  *
2042  * PARAMS
2043  *  Handle     [Out] handle usable in asynchronous notification
2044  *  overlapped [In]  overlapped structure that notifies the caller
2045  *
2046  * RETURNS
2047  *  Success: NO_ERROR
2048  *  Failure: error code from winerror.h
2049  *
2050  * FIXME
2051  *  Stub, returns ERROR_NOT_SUPPORTED.
2052  */
2053 DWORD WINAPI NotifyRouteChange(PHANDLE Handle, LPOVERLAPPED overlapped)
2054 {
2055   FIXME("(Handle %p, overlapped %p): stub\n", Handle, overlapped);
2056   return ERROR_NOT_SUPPORTED;
2057 }
2058
2059
2060 /******************************************************************
2061  *    SendARP (IPHLPAPI.@)
2062  *
2063  * Send an ARP request.
2064  *
2065  * PARAMS
2066  *  DestIP     [In]     attempt to obtain this IP
2067  *  SrcIP      [In]     optional sender IP address
2068  *  pMacAddr   [Out]    buffer for the mac address
2069  *  PhyAddrLen [In/Out] length of the output buffer
2070  *
2071  * RETURNS
2072  *  Success: NO_ERROR
2073  *  Failure: error code from winerror.h
2074  *
2075  * FIXME
2076  *  Stub, returns ERROR_NOT_SUPPORTED.
2077  */
2078 DWORD WINAPI SendARP(IPAddr DestIP, IPAddr SrcIP, PULONG pMacAddr, PULONG PhyAddrLen)
2079 {
2080   FIXME("(DestIP 0x%08x, SrcIP 0x%08x, pMacAddr %p, PhyAddrLen %p): stub\n",
2081    DestIP, SrcIP, pMacAddr, PhyAddrLen);
2082   return ERROR_NOT_SUPPORTED;
2083 }
2084
2085
2086 /******************************************************************
2087  *    SetIfEntry (IPHLPAPI.@)
2088  *
2089  * Set the administrative status of an interface.
2090  *
2091  * PARAMS
2092  *  pIfRow [In] dwAdminStatus member specifies the new status.
2093  *
2094  * RETURNS
2095  *  Success: NO_ERROR
2096  *  Failure: error code from winerror.h
2097  *
2098  * FIXME
2099  *  Stub, returns ERROR_NOT_SUPPORTED.
2100  */
2101 DWORD WINAPI SetIfEntry(PMIB_IFROW pIfRow)
2102 {
2103   FIXME("(pIfRow %p): stub\n", pIfRow);
2104   /* this is supposed to set an interface administratively up or down.
2105      Could do SIOCSIFFLAGS and set/clear IFF_UP, but, not sure I want to, and
2106      this sort of down is indistinguishable from other sorts of down (e.g. no
2107      link). */
2108   return ERROR_NOT_SUPPORTED;
2109 }
2110
2111
2112 /******************************************************************
2113  *    SetIpForwardEntry (IPHLPAPI.@)
2114  *
2115  * Modify an existing route.
2116  *
2117  * PARAMS
2118  *  pRoute [In] route with the new information
2119  *
2120  * RETURNS
2121  *  Success: NO_ERROR
2122  *  Failure: error code from winerror.h
2123  *
2124  * FIXME
2125  *  Stub, returns NO_ERROR.
2126  */
2127 DWORD WINAPI SetIpForwardEntry(PMIB_IPFORWARDROW pRoute)
2128 {
2129   FIXME("(pRoute %p): stub\n", pRoute);
2130   /* this is to add a route entry, how's it distinguishable from
2131      CreateIpForwardEntry?
2132      could use SIOCADDRT, not sure I want to */
2133   return 0;
2134 }
2135
2136
2137 /******************************************************************
2138  *    SetIpNetEntry (IPHLPAPI.@)
2139  *
2140  * Modify an existing ARP entry.
2141  *
2142  * PARAMS
2143  *  pArpEntry [In] ARP entry with the new information
2144  *
2145  * RETURNS
2146  *  Success: NO_ERROR
2147  *  Failure: error code from winerror.h
2148  *
2149  * FIXME
2150  *  Stub, returns NO_ERROR.
2151  */
2152 DWORD WINAPI SetIpNetEntry(PMIB_IPNETROW pArpEntry)
2153 {
2154   FIXME("(pArpEntry %p): stub\n", pArpEntry);
2155   /* same as CreateIpNetEntry here, could use SIOCSARP, not sure I want to */
2156   return 0;
2157 }
2158
2159
2160 /******************************************************************
2161  *    SetIpStatistics (IPHLPAPI.@)
2162  *
2163  * Toggle IP forwarding and det the default TTL value.
2164  *
2165  * PARAMS
2166  *  pIpStats [In] IP statistics with the new information
2167  *
2168  * RETURNS
2169  *  Success: NO_ERROR
2170  *  Failure: error code from winerror.h
2171  *
2172  * FIXME
2173  *  Stub, returns NO_ERROR.
2174  */
2175 DWORD WINAPI SetIpStatistics(PMIB_IPSTATS pIpStats)
2176 {
2177   FIXME("(pIpStats %p): stub\n", pIpStats);
2178   return 0;
2179 }
2180
2181
2182 /******************************************************************
2183  *    SetIpTTL (IPHLPAPI.@)
2184  *
2185  * Set the default TTL value.
2186  *
2187  * PARAMS
2188  *  nTTL [In] new TTL value
2189  *
2190  * RETURNS
2191  *  Success: NO_ERROR
2192  *  Failure: error code from winerror.h
2193  *
2194  * FIXME
2195  *  Stub, returns NO_ERROR.
2196  */
2197 DWORD WINAPI SetIpTTL(UINT nTTL)
2198 {
2199   FIXME("(nTTL %d): stub\n", nTTL);
2200   /* could echo nTTL > /proc/net/sys/net/ipv4/ip_default_ttl, not sure I
2201      want to.  Could map EACCESS to ERROR_ACCESS_DENIED, I suppose */
2202   return 0;
2203 }
2204
2205
2206 /******************************************************************
2207  *    SetTcpEntry (IPHLPAPI.@)
2208  *
2209  * Set the state of a TCP connection.
2210  *
2211  * PARAMS
2212  *  pTcpRow [In] specifies connection with new state
2213  *
2214  * RETURNS
2215  *  Success: NO_ERROR
2216  *  Failure: error code from winerror.h
2217  *
2218  * FIXME
2219  *  Stub, returns NO_ERROR.
2220  */
2221 DWORD WINAPI SetTcpEntry(PMIB_TCPROW pTcpRow)
2222 {
2223   FIXME("(pTcpRow %p): stub\n", pTcpRow);
2224   return 0;
2225 }
2226
2227
2228 /******************************************************************
2229  *    UnenableRouter (IPHLPAPI.@)
2230  *
2231  * Decrement the IP-forwarding reference count. Turn off IP-forwarding
2232  * if it reaches zero.
2233  *
2234  * PARAMS
2235  *  pOverlapped     [In/Out] should be the same as in EnableRouter()
2236  *  lpdwEnableCount [Out]    optional, receives reference count
2237  *
2238  * RETURNS
2239  *  Success: NO_ERROR
2240  *  Failure: error code from winerror.h
2241  *
2242  * FIXME
2243  *  Stub, returns ERROR_NOT_SUPPORTED.
2244  */
2245 DWORD WINAPI UnenableRouter(OVERLAPPED * pOverlapped, LPDWORD lpdwEnableCount)
2246 {
2247   FIXME("(pOverlapped %p, lpdwEnableCount %p): stub\n", pOverlapped,
2248    lpdwEnableCount);
2249   /* could echo "0" > /proc/net/sys/net/ipv4/ip_forward, not sure I want to
2250      could map EACCESS to ERROR_ACCESS_DENIED, I suppose
2251    */
2252   return ERROR_NOT_SUPPORTED;
2253 }
2254
2255 /******************************************************************
2256  *    PfCreateInterface (IPHLPAPI.@)
2257  */
2258 DWORD WINAPI PfCreateInterface(DWORD dwName, PFFORWARD_ACTION inAction, PFFORWARD_ACTION outAction,
2259         BOOL bUseLog, BOOL bMustBeUnique, INTERFACE_HANDLE *ppInterface)
2260 {
2261     FIXME("(%d %d %d %x %x %p) stub\n", dwName, inAction, outAction, bUseLog, bMustBeUnique, ppInterface);
2262     return ERROR_CALL_NOT_IMPLEMENTED;
2263 }