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