dll/win32/iphlpapi/address.c

   1 /*
   2  * COPYRIGHT:       See COPYING in the top level directory
   3  * PROJECT:         ReactOS system libraries
   4  * FILE:            dll/win32/iphlpapi/address.c
   5  * PURPOSE:         iphlpapi implementation - Adapter Address APIs
   6  * PROGRAMMERS:     Jérôme Gardou (jerome.gardou@reactos.org)
   7  */
   8
   9 #include "iphlpapi_private.h"
  10
  11 WINE_DEFAULT_DEBUG_CHANNEL(iphlpapi);
  12
  13 /* Helper for GetAdaptersAddresses:
  14  * Retrieves the list of network adapters from tcpip.sys */
  15 static
  16 NTSTATUS
  17 GetInterfacesList(
  18     _In_ HANDLE TcpFile,
  19     _Out_ TDIEntityID **EntityList,
  20     _Out_ ULONG* InterfaceCount)
  21 {
  22
  23     TCP_REQUEST_QUERY_INFORMATION_EX TcpQueryInfo;
  24     IO_STATUS_BLOCK StatusBlock;
  25     NTSTATUS Status;
  26     ULONG_PTR BufferSize;
  27
  28     ZeroMemory(&TcpQueryInfo, sizeof(TcpQueryInfo));
  29     TcpQueryInfo.ID.toi_class = INFO_CLASS_GENERIC;
  30     TcpQueryInfo.ID.toi_type = INFO_TYPE_PROVIDER;
  31     TcpQueryInfo.ID.toi_id = ENTITY_LIST_ID;
  32     TcpQueryInfo.ID.toi_entity.tei_entity = GENERIC_ENTITY;
  33     TcpQueryInfo.ID.toi_entity.tei_instance = 0;
  34
  35     Status = NtDeviceIoControlFile(
  36         TcpFile,
  37         NULL,
  38         NULL,
  39         NULL,
  40         &StatusBlock,
  41         IOCTL_TCP_QUERY_INFORMATION_EX,
  42         &TcpQueryInfo,
  43         sizeof(TcpQueryInfo),
  44         NULL,
  45         0);
  46     if (Status == STATUS_PENDING)
  47     {
  48         /* So we have to wait a bit */
  49         Status = NtWaitForSingleObject(TcpFile, FALSE, NULL);
  50         if (NT_SUCCESS(Status))
  51             Status = StatusBlock.Status;
  52     }
  53
  54     if (!NT_SUCCESS(Status))
  55         return Status;
  56
  57     BufferSize = StatusBlock.Information;
  58     *EntityList = HeapAlloc(GetProcessHeap(), 0, BufferSize);
  59     if (!*EntityList)
  60         return STATUS_NO_MEMORY;
  61
  62     /* Do the real call */
  63     Status = NtDeviceIoControlFile(
  64         TcpFile,
  65         NULL,
  66         NULL,
  67         NULL,
  68         &StatusBlock,
  69         IOCTL_TCP_QUERY_INFORMATION_EX,
  70         &TcpQueryInfo,
  71         sizeof(TcpQueryInfo),
  72         *EntityList,
  73         BufferSize);
  74     if (Status == STATUS_PENDING)
  75     {
  76         /* So we have to wait a bit */
  77         Status = NtWaitForSingleObject(TcpFile, FALSE, NULL);
  78         if (NT_SUCCESS(Status))
  79             Status = StatusBlock.Status;
  80     }
  81
  82     if (!NT_SUCCESS(Status))
  83     {
  84         HeapFree(GetProcessHeap(), 0, *EntityList);
  85         return Status;
  86     }
  87
  88     *InterfaceCount = BufferSize / sizeof(TDIEntityID);
  89     return Status;
  90 }
  91
  92 static
  93 NTSTATUS
  94 GetSnmpInfo(
  95     _In_ HANDLE TcpFile,
  96     _In_ TDIEntityID InterfaceID,
  97     _Out_ IPSNMPInfo* Info)
  98 {
  99     TCP_REQUEST_QUERY_INFORMATION_EX TcpQueryInfo;
 100     IO_STATUS_BLOCK StatusBlock;
 101     NTSTATUS Status;
 102
 103     ZeroMemory(&TcpQueryInfo, sizeof(TcpQueryInfo));
 104     TcpQueryInfo.ID.toi_class = INFO_CLASS_PROTOCOL;
 105     TcpQueryInfo.ID.toi_type = INFO_TYPE_PROVIDER;
 106     TcpQueryInfo.ID.toi_id = IP_MIB_STATS_ID;
 107     TcpQueryInfo.ID.toi_entity = InterfaceID;
 108
 109     Status = NtDeviceIoControlFile(
 110         TcpFile,
 111         NULL,
 112         NULL,
 113         NULL,
 114         &StatusBlock,
 115         IOCTL_TCP_QUERY_INFORMATION_EX,
 116         &TcpQueryInfo,
 117         sizeof(TcpQueryInfo),
 118         Info,
 119         sizeof(*Info));
 120     if (Status == STATUS_PENDING)
 121     {
 122         /* So we have to wait a bit */
 123         Status = NtWaitForSingleObject(TcpFile, FALSE, NULL);
 124         if (NT_SUCCESS(Status))
 125             Status = StatusBlock.Status;
 126     }
 127
 128     return Status;
 129 }
 130
 131 static
 132 NTSTATUS
 133 GetAddrEntries(
 134     _In_ HANDLE TcpFile,
 135     _In_ TDIEntityID InterfaceID,
 136     _Out_ IPAddrEntry* Entries,
 137     _In_ ULONG NumEntries)
 138 {
 139     TCP_REQUEST_QUERY_INFORMATION_EX TcpQueryInfo;
 140     IO_STATUS_BLOCK StatusBlock;
 141     NTSTATUS Status;
 142
 143     ZeroMemory(&TcpQueryInfo, sizeof(TcpQueryInfo));
 144     TcpQueryInfo.ID.toi_class = INFO_CLASS_PROTOCOL;
 145     TcpQueryInfo.ID.toi_type = INFO_TYPE_PROVIDER;
 146     TcpQueryInfo.ID.toi_id = IP_MIB_ADDRTABLE_ENTRY_ID;
 147     TcpQueryInfo.ID.toi_entity = InterfaceID;
 148
 149     Status = NtDeviceIoControlFile(
 150         TcpFile,
 151         NULL,
 152         NULL,
 153         NULL,
 154         &StatusBlock,
 155         IOCTL_TCP_QUERY_INFORMATION_EX,
 156         &TcpQueryInfo,
 157         sizeof(TcpQueryInfo),
 158         Entries,
 159         NumEntries * sizeof(Entries[0]));
 160     if (Status == STATUS_PENDING)
 161     {
 162         /* So we have to wait a bit */
 163         Status = NtWaitForSingleObject(TcpFile, FALSE, NULL);
 164         if (NT_SUCCESS(Status))
 165             Status = StatusBlock.Status;
 166     }
 167
 168     return Status;
 169 }
 170
 171 /*
 172  * Fills the IFEntry buffer from tcpip.sys.
 173  * The buffer size MUST be FIELD_OFFSET(IFEntry, if_descr[MAX_ADAPTER_DESCRIPTION_LENGTH + 1]).
 174  * See MSDN IFEntry struct definition if you don't believe me. ;-)
 175  */
 176 static
 177 NTSTATUS
 178 GetInterfaceEntry(
 179     _In_ HANDLE TcpFile,
 180     _In_ TDIEntityID InterfaceID,
 181     _Out_ IFEntry* Entry)
 182 {
 183     TCP_REQUEST_QUERY_INFORMATION_EX TcpQueryInfo;
 184     IO_STATUS_BLOCK StatusBlock;
 185     NTSTATUS Status;
 186
 187     ZeroMemory(&TcpQueryInfo, sizeof(TcpQueryInfo));
 188     TcpQueryInfo.ID.toi_class = INFO_CLASS_PROTOCOL;
 189     TcpQueryInfo.ID.toi_type = INFO_TYPE_PROVIDER;
 190     TcpQueryInfo.ID.toi_id = IP_MIB_STATS_ID;
 191     TcpQueryInfo.ID.toi_entity = InterfaceID;
 192
 193     Status = NtDeviceIoControlFile(
 194         TcpFile,
 195         NULL,
 196         NULL,
 197         NULL,
 198         &StatusBlock,
 199         IOCTL_TCP_QUERY_INFORMATION_EX,
 200         &TcpQueryInfo,
 201         sizeof(TcpQueryInfo),
 202         Entry,
 203         FIELD_OFFSET(IFEntry, if_descr[MAX_ADAPTER_DESCRIPTION_LENGTH + 1]));
 204     if (Status == STATUS_PENDING)
 205     {
 206         /* So we have to wait a bit */
 207         Status = NtWaitForSingleObject(TcpFile, FALSE, NULL);
 208         if (NT_SUCCESS(Status))
 209             Status = StatusBlock.Status;
 210     }
 211
 212     return Status;
 213 }
 214
 215 /* Helpers to get the list of DNS for an interface */
 216 static
 217 VOID
 218 EnumerateServerNameSize(
 219     _In_ PWCHAR Interface,
 220     _In_ PWCHAR NameServer,
 221     _Inout_ PVOID Data)
 222 {
 223     ULONG* BufferSize = Data;
 224
 225     /* This is just sizing here */
 226     UNREFERENCED_PARAMETER(Interface);
 227     UNREFERENCED_PARAMETER(NameServer);
 228
 229     *BufferSize += sizeof(IP_ADAPTER_DNS_SERVER_ADDRESS) + sizeof(SOCKADDR);
 230 }
 231
 232 static
 233 VOID
 234 EnumerateServerName(
 235     _In_ PWCHAR Interface,
 236     _In_ PWCHAR NameServer,
 237     _Inout_ PVOID Data)
 238 {
 239     PIP_ADAPTER_DNS_SERVER_ADDRESS** Ptr = Data;
 240     PIP_ADAPTER_DNS_SERVER_ADDRESS ServerAddress = **Ptr;
 241
 242     UNREFERENCED_PARAMETER(Interface);
 243
 244     ServerAddress->Length = sizeof(IP_ADAPTER_DNS_SERVER_ADDRESS);
 245     ServerAddress->Address.lpSockaddr = (PVOID)(ServerAddress + 1);
 246     ServerAddress->Address.iSockaddrLength = sizeof(SOCKADDR);
 247
 248
 249     /* Get the address from the server name string */
 250     //FIXME: Only ipv4 for now...
 251     if (WSAStringToAddressW(
 252         NameServer,
 253         AF_INET,
 254         NULL,
 255         ServerAddress->Address.lpSockaddr,
 256         &ServerAddress->Address.iSockaddrLength))
 257     {
 258         /* Pass along, name conversion failed */
 259         ERR("%S is not a valid IP address\n", NameServer);
 260         return;
 261     }
 262
 263     /* Go to next item */
 264     ServerAddress->Next = (PVOID)(ServerAddress->Address.lpSockaddr + 1);
 265     *Ptr = &ServerAddress->Next;
 266 }
 267
 268 DWORD
 269 WINAPI
 270 DECLSPEC_HOTPATCH
 271 GetAdaptersAddresses(
 272     _In_ ULONG Family,
 273     _In_ ULONG Flags,
 274     _In_ PVOID Reserved,
 275     _Inout_ PIP_ADAPTER_ADDRESSES pAdapterAddresses,
 276     _Inout_ PULONG pOutBufLen)
 277 {
 278     NTSTATUS Status;
 279     HANDLE TcpFile;
 280     TDIEntityID* InterfacesList;
 281     ULONG InterfacesCount;
 282     ULONG AdaptersCount = 0;
 283     ULONG i;
 284     ULONG TotalSize = 0, RemainingSize;
 285     BYTE* Ptr = (BYTE*)pAdapterAddresses;
 286
 287     FIXME("GetAdaptersAddresses - Semi Stub: Family %u, Flags 0x%08x, Reserved %p, pAdapterAddress %p, pOutBufLen %p.\n",
 288         Family, Flags, Reserved, pAdapterAddresses, pOutBufLen);
 289
 290     if (!pOutBufLen)
 291         return ERROR_INVALID_PARAMETER;
 292
 293     if ((Family == AF_INET6) || (Family == AF_UNSPEC))
 294     {
 295         /* One day maybe... */
 296         FIXME("IPv6 is not supported in ReactOS!\n");
 297         if (Family == AF_INET6)
 298         {
 299             /* We got nothing to say in this case */
 300             return ERROR_NO_DATA;
 301         }
 302     }
 303
 304     RemainingSize = *pOutBufLen;
 305     if (Ptr)
 306         ZeroMemory(Ptr, RemainingSize);
 307
 308     /* open the tcpip driver */
 309     Status = openTcpFile(&TcpFile);
 310     if (!NT_SUCCESS(Status))
 311     {
 312         ERR("Could not open handle to tcpip.sys. Status %08x\n", Status);
 313         return RtlNtStatusToDosError(Status);
 314     }
 315
 316     /* Get the interfaces list */
 317     Status = GetInterfacesList(TcpFile, &InterfacesList, &InterfacesCount);
 318     if (!NT_SUCCESS(Status))
 319     {
 320         ERR("Could not get adapters list. Status %08x\n", Status);
 321         NtClose(TcpFile);
 322         return RtlNtStatusToDosError(Status);
 323     }
 324
 325     /* Let's see if we got any adapter. */
 326     for (i = 0; i < InterfacesCount; i++)
 327     {
 328         PIP_ADAPTER_ADDRESSES CurrentAA = (PIP_ADAPTER_ADDRESSES)Ptr, PreviousAA = NULL;
 329         ULONG CurrentAASize = 0;
 330
 331         if (InterfacesList[i].tei_entity == IF_ENTITY)
 332         {
 333             BYTE EntryBuffer[FIELD_OFFSET(IFEntry, if_descr) +
 334                              RTL_FIELD_SIZE(IFEntry, if_descr[0]) * (MAX_ADAPTER_DESCRIPTION_LENGTH + 1)];
 335             IFEntry* Entry = (IFEntry*)EntryBuffer;
 336
 337             /* Remember we got one */
 338             AdaptersCount++;
 339
 340             /* Of course we need some space for the base structure. */
 341             CurrentAASize = sizeof(IP_ADAPTER_ADDRESSES);
 342
 343             /* Get the entry */
 344             Status = GetInterfaceEntry(TcpFile, InterfacesList[i], Entry);
 345             if (!NT_SUCCESS(Status))
 346                 goto Error;
 347
 348             TRACE("Got entity %*s, index %u.\n",
 349                 Entry->if_descrlen, &Entry->if_descr[0], Entry->if_index);
 350
 351             /* Add the adapter name */
 352             CurrentAASize += Entry->if_descrlen + sizeof(CHAR);
 353
 354             /* Add the DNS suffix */
 355             CurrentAASize += sizeof(WCHAR);
 356
 357             /* Add the description. */
 358             CurrentAASize += sizeof(WCHAR);
 359
 360             if (!(Flags & GAA_FLAG_SKIP_FRIENDLY_NAME))
 361             {
 362                 /* Just an empty string for now. */
 363                 FIXME("Should get adapter friendly name.\n");
 364                 CurrentAASize += sizeof(WCHAR);
 365             }
 366
 367             if (!(Flags & GAA_FLAG_SKIP_DNS_SERVER))
 368             {
 369                 /* Enumerate the name servers */
 370                 HKEY InterfaceKey;
 371                 CHAR KeyName[256];
 372
 373                 snprintf(KeyName, 256,
 374                     "SYSTEM\\CurrentControlSet\\Services\\Tcpip\\Parameters\\Interfaces\\%*s",
 375                     Entry->if_descrlen, &Entry->if_descr[0]);
 376
 377                 if (RegOpenKeyExA(HKEY_LOCAL_MACHINE, KeyName, 0, KEY_READ, &InterfaceKey) != ERROR_SUCCESS)
 378                 {
 379                     ERR("Failed opening interface key for interface %*s\n", Entry->if_descrlen, &Entry->if_descr[0]);
 380                     Flags |= GAA_FLAG_SKIP_DNS_SERVER;
 381                 }
 382                 else
 383                 {
 384                     EnumNameServers(InterfaceKey, NULL, &CurrentAASize, EnumerateServerNameSize);
 385                     RegCloseKey(InterfaceKey);
 386                 }
 387             }
 388
 389             /* This is part of what we will need */
 390             TotalSize += CurrentAASize;
 391
 392             /* Fill in the data */
 393             if ((CurrentAA) && (RemainingSize >= CurrentAASize))
 394             {
 395                 CurrentAA->Length = sizeof(IP_ADAPTER_ADDRESSES);
 396                 CurrentAA->IfIndex = Entry->if_index;
 397                 CopyMemory(CurrentAA->PhysicalAddress, Entry->if_physaddr, Entry->if_physaddrlen);
 398                 CurrentAA->PhysicalAddressLength = Entry->if_physaddrlen;
 399                 CurrentAA->Flags = 0; // FIXME!
 400                 CurrentAA->Mtu = Entry->if_mtu;
 401                 CurrentAA->IfType = Entry->if_type;
 402                 CurrentAA->OperStatus = Entry->if_operstatus;
 403                 CurrentAA->Next = PreviousAA;
 404                 /* Next items */
 405                 Ptr = (BYTE*)(CurrentAA + 1);
 406
 407                 /* Now fill in the name */
 408                 CopyMemory(Ptr, &Entry->if_descr[0], Entry->if_descrlen);
 409                 CurrentAA->AdapterName = (PCHAR)Ptr;
 410                 CurrentAA->AdapterName[Entry->if_descrlen] = '\0';
 411                 /* Next items */
 412                 Ptr = (BYTE*)(CurrentAA->AdapterName + Entry->if_descrlen + 1);
 413
 414                 /* The DNS suffix */
 415                 CurrentAA->DnsSuffix = (PWCHAR)Ptr;
 416                 CurrentAA->DnsSuffix[0] = L'\0';
 417                 /* Next items */
 418                 Ptr = (BYTE*)(CurrentAA->DnsSuffix + 1);
 419
 420                 /* The description */
 421                 CurrentAA->Description = (PWCHAR)Ptr;
 422                 CurrentAA->Description[0] = L'\0';
 423                 /* Next items */
 424                 Ptr = (BYTE*)(CurrentAA->Description + 1);
 425
 426                 /* The friendly name */
 427                 if (!(Flags & GAA_FLAG_SKIP_FRIENDLY_NAME))
 428                 {
 429                     CurrentAA->FriendlyName = (PWCHAR)Ptr;
 430                     CurrentAA->FriendlyName[0] = L'\0';
 431                     /* Next items */
 432                     Ptr = (BYTE*)(CurrentAA->FriendlyName + 1);
 433                 }
 434
 435                 /* The DNS Servers */
 436                 if (!(Flags & GAA_FLAG_SKIP_DNS_SERVER))
 437                 {
 438                     /* Enumerate the name servers */
 439                     HKEY InterfaceKey;
 440                     CHAR KeyName[256];
 441
 442                     snprintf(KeyName, 256,
 443                         "SYSTEM\\CurrentControlSet\\Services\\Tcpip\\Parameters\\Interfaces\\%*s",
 444                         Entry->if_descrlen, &Entry->if_descr[0]);
 445
 446                     if (RegOpenKeyExA(HKEY_LOCAL_MACHINE, KeyName, 0, KEY_READ, &InterfaceKey) != ERROR_SUCCESS)
 447                     {
 448                         ERR("Failed opening interface key for interface %*s\n", Entry->if_descrlen, &Entry->if_descr[0]);
 449                     }
 450                     else
 451                     {
 452                         PIP_ADAPTER_DNS_SERVER_ADDRESS* ServerAddressPtr;
 453
 454                         CurrentAA->FirstDnsServerAddress = (PIP_ADAPTER_DNS_SERVER_ADDRESS)Ptr;
 455                         ServerAddressPtr = &CurrentAA->FirstDnsServerAddress;
 456
 457                         EnumNameServers(InterfaceKey, NULL, &ServerAddressPtr, EnumerateServerName);
 458                         RegCloseKey(InterfaceKey);
 459
 460                         /* Set the last entry in the list as having NULL next member */
 461                         Ptr = (BYTE*)*ServerAddressPtr;
 462                         *ServerAddressPtr = NULL;
 463                     }
 464                 }
 465
 466                 /* We're done for this interface */
 467                 PreviousAA = CurrentAA;
 468                 RemainingSize -= CurrentAASize;
 469             }
 470         }
 471     }
 472
 473     if (AdaptersCount == 0)
 474     {
 475         /* Uh? Not even localhost ?! */
 476         ERR("No Adapters found!\n");
 477         *pOutBufLen = 0;
 478         return ERROR_NO_DATA;
 479     }
 480
 481     /* See if we have anything to add */
 482     // FIXME: Anycast and multicast
 483     if ((Flags & (GAA_FLAG_SKIP_UNICAST | GAA_FLAG_INCLUDE_PREFIX)) == GAA_FLAG_SKIP_UNICAST)
 484         goto Success;
 485
 486     /* Now fill in the addresses */
 487     for (i = 0; i < InterfacesCount; i++)
 488     {
 489         /* Look for network layers */
 490         if ((InterfacesList[i].tei_entity == CL_NL_ENTITY)
 491                 || (InterfacesList[i].tei_entity == CO_NL_ENTITY))
 492         {
 493             IPSNMPInfo SnmpInfo;
 494             PIP_ADAPTER_ADDRESSES CurrentAA = NULL;
 495             IPAddrEntry* AddrEntries;
 496             ULONG j;
 497
 498             /* Get its SNMP info */
 499             Status = GetSnmpInfo(TcpFile, InterfacesList[i], &SnmpInfo);
 500             if (!NT_SUCCESS(Status))
 501                 goto Error;
 502
 503             if (SnmpInfo.ipsi_numaddr == 0)
 504                 continue;
 505
 506             /* Allocate the address entry array and get them */
 507             AddrEntries = HeapAlloc(GetProcessHeap(),
 508                 HEAP_ZERO_MEMORY,
 509                 SnmpInfo.ipsi_numaddr * sizeof(AddrEntries[0]));
 510             if (!AddrEntries)
 511             {
 512                 Status = STATUS_NO_MEMORY;
 513                 goto Error;
 514             }
 515             Status = GetAddrEntries(TcpFile, InterfacesList[i], AddrEntries, SnmpInfo.ipsi_numaddr);
 516             if (!NT_SUCCESS(Status))
 517             {
 518                 HeapFree(GetProcessHeap(), 0, AddrEntries);
 519                 goto Error;
 520             }
 521
 522             for (j = 0; j < SnmpInfo.ipsi_numaddr; j++)
 523             {
 524                 /* Find the adapters struct for this address. */
 525                 if (pAdapterAddresses)
 526                 {
 527                     CurrentAA = pAdapterAddresses;
 528                     while (CurrentAA)
 529                     {
 530                         if (CurrentAA->IfIndex == AddrEntries[j].iae_index)
 531                             break;
 532                     }
 533
 534                     if (!CurrentAA)
 535                     {
 536                         ERR("Got address for interface %u but no adapter was found for it.\n", AddrEntries[j].iae_index);
 537                         /* Go to the next address */
 538                         continue;
 539                     }
 540                 }
 541
 542                 ERR("address is 0x%08x, mask is 0x%08x\n", AddrEntries[j].iae_addr, AddrEntries[j].iae_mask);
 543
 544                 //FIXME: For now reactos only supports unicast addresses
 545                 if (!(Flags & GAA_FLAG_SKIP_UNICAST))
 546                 {
 547                     ULONG Size = sizeof(IP_ADAPTER_UNICAST_ADDRESS) + sizeof(SOCKADDR);
 548
 549                     if (Ptr && (RemainingSize >= Size))
 550                     {
 551                         PIP_ADAPTER_UNICAST_ADDRESS UnicastAddress = (PIP_ADAPTER_UNICAST_ADDRESS)Ptr;
 552
 553                         /* Fill in the structure */
 554                         UnicastAddress->Length = sizeof(IP_ADAPTER_UNICAST_ADDRESS);
 555                         UnicastAddress->Next = CurrentAA->FirstUnicastAddress;
 556
 557                         // FIXME: Put meaningful value here
 558                         UnicastAddress->Flags = 0;
 559                         UnicastAddress->PrefixOrigin = IpPrefixOriginOther;
 560                         UnicastAddress->SuffixOrigin = IpSuffixOriginOther;
 561                         UnicastAddress->DadState = IpDadStatePreferred;
 562                         UnicastAddress->ValidLifetime = 0xFFFFFFFF;
 563                         UnicastAddress->PreferredLifetime = 0xFFFFFFFF;
 564
 565                         /* Set the address */
 566                         //FIXME: ipv4 only (again...)
 567                         UnicastAddress->Address.lpSockaddr = (LPSOCKADDR)(UnicastAddress + 1);
 568                         UnicastAddress->Address.iSockaddrLength = sizeof(AddrEntries[j].iae_addr);
 569                         UnicastAddress->Address.lpSockaddr->sa_family = AF_INET;
 570                         memcpy(UnicastAddress->Address.lpSockaddr->sa_data, &AddrEntries[j].iae_addr, sizeof(AddrEntries[j].iae_addr));
 571
 572                         CurrentAA->FirstUnicastAddress = UnicastAddress;
 573                         Ptr += Size;
 574                         RemainingSize -= Size;
 575                     }
 576
 577                     TotalSize += Size;
 578                 }
 579
 580                 if (Flags & GAA_FLAG_INCLUDE_PREFIX)
 581                 {
 582                     ULONG Size = sizeof(IP_ADAPTER_PREFIX) + sizeof(SOCKADDR);
 583
 584                     if (Ptr && (RemainingSize >= Size))
 585                     {
 586                         PIP_ADAPTER_PREFIX Prefix = (PIP_ADAPTER_PREFIX)Ptr;
 587
 588                         /* Fill in the structure */
 589                         Prefix->Length = sizeof(IP_ADAPTER_PREFIX);
 590                         Prefix->Next = CurrentAA->FirstPrefix;
 591
 592                         /* Set the address */
 593                         //FIXME: ipv4 only (again...)
 594                         Prefix->Address.lpSockaddr = (LPSOCKADDR)(Prefix + 1);
 595                         Prefix->Address.iSockaddrLength = sizeof(AddrEntries[j].iae_mask);
 596                         Prefix->Address.lpSockaddr->sa_family = AF_INET;
 597                         memcpy(Prefix->Address.lpSockaddr->sa_data, &AddrEntries[j].iae_mask, sizeof(AddrEntries[j].iae_mask));
 598
 599                         /* Compute the prefix size */
 600                         _BitScanReverse(&Prefix->PrefixLength, AddrEntries[j].iae_mask);
 601
 602                         CurrentAA->FirstPrefix = Prefix;
 603                         Ptr += Size;
 604                         RemainingSize -= Size;
 605                     }
 606
 607                     TotalSize += Size;
 608                 }
 609             }
 610
 611             HeapFree(GetProcessHeap(), 0, AddrEntries);
 612         }
 613     }
 614
 615 Success:
 616     /* We're done */
 617     HeapFree(GetProcessHeap(), 0, InterfacesList);
 618     NtClose(TcpFile);
 619     *pOutBufLen = TotalSize;
 620     return ERROR_SUCCESS;
 621
 622 Error:
 623     ERR("Failed! Status 0x%08x\n", Status);
 624     *pOutBufLen = 0;
 625     HeapFree(GetProcessHeap(), 0, InterfacesList);
 626     NtClose(TcpFile);
 627     return RtlNtStatusToDosError(Status);
 628 }