address.h File Reference

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Macros
#define	AddrInitIPv4(IPAddress, RawAddress)

Functions
VOID	IPAddressFree (PVOID Object)
BOOLEAN	AddrIsUnspecified (PIP_ADDRESS Address)
NTSTATUS	AddrGetAddress (PTRANSPORT_ADDRESS AddrList, PIP_ADDRESS Address, PUSHORT Port)
NTSTATUS	AddrBuildAddress (PTRANSPORT_ADDRESS TdiAddress, PIP_ADDRESS Address, PUSHORT Port)
BOOLEAN	AddrIsEqual (PIP_ADDRESS Address1, PIP_ADDRESS Address2)
INT	AddrCompare (PIP_ADDRESS Address1, PIP_ADDRESS Address2)
BOOLEAN	AddrIsEqualIPv4 (PIP_ADDRESS Address1, IPv4_RAW_ADDRESS Address2)
PIP_INTERFACE	AddrLocateInterface (PIP_ADDRESS MatchAddress)
PADDRESS_FILE	AddrSearchFirst (PIP_ADDRESS Address, USHORT Port, USHORT Protocol, PAF_SEARCH SearchContext)
PADDRESS_FILE	AddrSearchNext (PAF_SEARCH SearchContext)
unsigned long NTAPI	inet_addr (const char *)
ULONG	IPv4NToHl (ULONG Address)
UINT	AddrCountPrefixBits (PIP_ADDRESS Netmask)
VOID	AddrWidenAddress (PIP_ADDRESS Network, PIP_ADDRESS Source, PIP_ADDRESS Netmask)

Macro Definition Documentation

AddrInitIPv4

#define AddrInitIPv4	(		IPAddress,
			RawAddress
	)

Value:

{                                                     \
    (IPAddress)->Type                = IP_ADDRESS_V4; \
    (IPAddress)->Address.IPv4Address = (RawAddress);  \
}

Definition at line 16 of file address.h.

Function Documentation

AddrBuildAddress()

NTSTATUS AddrBuildAddress	(	PTRANSPORT_ADDRESS	TdiAddress,
		PIP_ADDRESS	Address,
		PUSHORT	Port
	)

Definition at line 184 of file address.c.

{
  PTDI_ADDRESS_IP ValidAddr;
  PTA_ADDRESS TdiAddress = &TaAddress->Address[0];

  if (TdiAddress->AddressType != TDI_ADDRESS_TYPE_IP) {
      TI_DbgPrint
      (MID_TRACE,("AddressType %x, Not valid\n", TdiAddress->AddressType));
    return STATUS_INVALID_ADDRESS;
  }
  if (TdiAddress->AddressLength < TDI_ADDRESS_LENGTH_IP) {
      TI_DbgPrint
      (MID_TRACE,("AddressLength %x, Not valid (expected %x)\n",
              TdiAddress->AddressLength, TDI_ADDRESS_LENGTH_IP));
      return STATUS_INVALID_ADDRESS;
  }


  ValidAddr = (PTDI_ADDRESS_IP)TdiAddress->Address;

  AddrInitIPv4(Address, ValidAddr->in_addr);
  *Port = ValidAddr->sin_port;

  return STATUS_SUCCESS;
}

Referenced by TCPConnect().

AddrCompare()

INT AddrCompare	(	PIP_ADDRESS	Address1,
		PIP_ADDRESS	Address2
	)

Definition at line 257 of file address.c.

{
    switch (Address1->Type) {
        case IP_ADDRESS_V4: {
            ULONG Addr1, Addr2;
            if (Address2->Type == IP_ADDRESS_V4) {
                Addr1 = DN2H(Address1->Address.IPv4Address);
                Addr2 = DN2H(Address2->Address.IPv4Address);
                if (Addr1 < Addr2)
                    return -1;
                else
                    if (Addr1 == Addr2)
                        return 0;
                    else
                        return 1;
            } else
                /* FIXME: Support IPv6 */
                return -1;

        case IP_ADDRESS_V6:
            /* FIXME: Support IPv6 */
        break;
        }
    }

    return FALSE;
}

AddrCountPrefixBits()

UINT AddrCountPrefixBits

(

PIP_ADDRESS

Netmask

)

Definition at line 64 of file address.c.

                                                {
    UINT Prefix = 0;
    if( Netmask->Type == IP_ADDRESS_V4 ) {
    ULONG BitTest = 0x80000000;

    /* The mask has been read in network order.  Put it in host order
     * in order to scan it. */

    ULONG TestMask = IPv4NToHl(Netmask->Address.IPv4Address);

    while( (BitTest & TestMask) == BitTest ) {
        Prefix++;
        BitTest >>= 1;
    }
    return Prefix;
    } else {
    TI_DbgPrint(DEBUG_DATALINK, ("Don't know address type %d\n",
                     Netmask->Type));
    return 0;
    }
}

Referenced by FindOnLinkInterface(), and RouterGetRoute().

AddrGetAddress()

NTSTATUS AddrGetAddress	(	PTRANSPORT_ADDRESS	AddrList,
		PIP_ADDRESS	Address,
		PUSHORT	Port
	)

Definition at line 146 of file address.c.

{
    PTA_ADDRESS CurAddr;
    INT i;

    /* We can only use IP addresses. Search the list until we find one */
    CurAddr = AddrList->Address;

    for (i = 0; i < AddrList->TAAddressCount; i++) {
        switch (CurAddr->AddressType) {
        case TDI_ADDRESS_TYPE_IP:
            if (CurAddr->AddressLength >= TDI_ADDRESS_LENGTH_IP) {
                /* This is an IPv4 address */
                PTDI_ADDRESS_IP ValidAddr = (PTDI_ADDRESS_IP)CurAddr->Address;
                *Port = ValidAddr->sin_port;
        Address->Type = CurAddr->AddressType;
        ValidAddr = (PTDI_ADDRESS_IP)CurAddr->Address;
        AddrInitIPv4(Address, ValidAddr->in_addr);
        return STATUS_SUCCESS;
        }
    }
    }

    return STATUS_INVALID_ADDRESS;
}

Referenced by DGReceiveDatagram().

AddrIsEqual()

BOOLEAN AddrIsEqual	(	PIP_ADDRESS	Address1,
		PIP_ADDRESS	Address2
	)

Definition at line 221 of file address.c.

{
    if (Address1->Type != Address2->Type) {
        DbgPrint("AddrIsEqual: Unequal Address Types\n");
        return FALSE;
    }

    switch (Address1->Type) {
        case IP_ADDRESS_V4:
            return (Address1->Address.IPv4Address == Address2->Address.IPv4Address);

        case IP_ADDRESS_V6:
            return (RtlCompareMemory(&Address1->Address, &Address2->Address,
                sizeof(IPv6_RAW_ADDRESS)) == sizeof(IPv6_RAW_ADDRESS));
            break;

        default:
            DbgPrint("AddrIsEqual: Bad address type\n");
            break;
    }

    return FALSE;
}

Referenced by AddrIsBroadcastMatch(), AddrLocateInterface(), AddrReceiveMatch(), ARPReceive(), DGDeliverData(), GetReassemblyInfo(), NBCopyNeighbors(), NBFindOrCreateNeighbor(), NBLocateNeighbor(), NBResetNeighborTimeout(), RouterCreateRoute(), and RouterRemoveRoute().

AddrIsEqualIPv4()

BOOLEAN AddrIsEqualIPv4	(	PIP_ADDRESS	Address1,
		IPv4_RAW_ADDRESS	Address2
	)

Definition at line 296 of file address.c.

{
    if (Address1->Type == IP_ADDRESS_V4)
        return (Address1->Address.IPv4Address == Address2);

    return FALSE;
}

AddrIsUnspecified()

BOOLEAN AddrIsUnspecified

(

PIP_ADDRESS

Address

)

Definition at line 113 of file address.c.

{
    switch (Address->Type) {
        case IP_ADDRESS_V4:
            return (Address->Address.IPv4Address == 0 ||
                    Address->Address.IPv4Address == 0xFFFFFFFF);

        case IP_ADDRESS_V6:
        /* FIXME: IPv6 is not supported */
        default:
            return FALSE;
    }
}

Referenced by AddrIsBroadcastMatch(), AddrReceiveMatch(), DGDeliverData(), DispTdiQueryIpHwAddress(), FileOpenAddress(), FindOnLinkInterface(), GetDefaultInterface(), ICMPSendDatagram(), NBFindOrCreateNeighbor(), RawIPSendDatagram(), ReadIpConfiguration(), TCPConnect(), and UDPSendDatagram().

AddrLocateInterface()

PIP_INTERFACE AddrLocateInterface

(

PIP_ADDRESS

MatchAddress

)

Definition at line 89 of file interface.c.

{
    KIRQL OldIrql;
    PIP_INTERFACE RetIF = NULL;
    IF_LIST_ITER(CurrentIF);

    TcpipAcquireSpinLock(&InterfaceListLock, &OldIrql);

    ForEachInterface(CurrentIF) {
    if( AddrIsEqual( &CurrentIF->Unicast, MatchAddress ) ||
            AddrIsEqual( &CurrentIF->Broadcast, MatchAddress ) ) {
            RetIF = CurrentIF;
            break;
    }
    } EndFor(CurrentIF);

    TcpipReleaseSpinLock(&InterfaceListLock, OldIrql);

    return RetIF;
}

Referenced by DispTdiQueryIpHwAddress(), and FileOpenAddress().

AddrSearchFirst()

PADDRESS_FILE AddrSearchFirst	(	PIP_ADDRESS	Address,
		USHORT	Port,
		USHORT	Protocol,
		PAF_SEARCH	SearchContext
	)

Definition at line 38 of file fileobjs.c.

{
    KIRQL OldIrql;
    
    SearchContext->Address  = Address;
    SearchContext->Port     = Port;
    SearchContext->Protocol = Protocol;

    TcpipAcquireSpinLock(&AddressFileListLock, &OldIrql);

    SearchContext->Next = AddressFileListHead.Flink;

    if (!IsListEmpty(&AddressFileListHead))
        ReferenceObject(CONTAINING_RECORD(SearchContext->Next, ADDRESS_FILE, ListEntry));

    TcpipReleaseSpinLock(&AddressFileListLock, OldIrql);

    return AddrSearchNext(SearchContext);
}

Referenced by RawIpReceive(), and UDPReceive().

AddrSearchNext()

PADDRESS_FILE AddrSearchNext

(

PAF_SEARCH

SearchContext

)

Definition at line 231 of file fileobjs.c.

{
    PLIST_ENTRY CurrentEntry;
    PIP_ADDRESS IPAddress;
    KIRQL OldIrql;
    PADDRESS_FILE Current = NULL;
    BOOLEAN Found = FALSE;
    PADDRESS_FILE StartingAddrFile;
    
    TcpipAcquireSpinLock(&AddressFileListLock, &OldIrql);

    if (SearchContext->Next == &AddressFileListHead)
    {
        TcpipReleaseSpinLock(&AddressFileListLock, OldIrql);
        return NULL;
    }

    /* Save this pointer so we can dereference it later */
    StartingAddrFile = CONTAINING_RECORD(SearchContext->Next, ADDRESS_FILE, ListEntry);

    CurrentEntry = SearchContext->Next;

    while (CurrentEntry != &AddressFileListHead) {
        Current = CONTAINING_RECORD(CurrentEntry, ADDRESS_FILE, ListEntry);

        IPAddress = &Current->Address;

        TI_DbgPrint(DEBUG_ADDRFILE, ("Comparing: ((%d, %d, %s), (%d, %d, %s)).\n",
            WN2H(Current->Port),
            Current->Protocol,
            A2S(IPAddress),
            WN2H(SearchContext->Port),
            SearchContext->Protocol,
            A2S(SearchContext->Address)));

        /* See if this address matches the search criteria */
        if ((Current->Port    == SearchContext->Port) &&
            (Current->Protocol == SearchContext->Protocol) &&
            (AddrReceiveMatch(IPAddress, SearchContext->Address))) {
            /* We've found a match */
            Found = TRUE;
            break;
        }
        CurrentEntry = CurrentEntry->Flink;
    }

    if (Found)
    {
        SearchContext->Next = CurrentEntry->Flink;

        if (SearchContext->Next != &AddressFileListHead)
        {
            /* Reference the next address file to prevent the link from disappearing behind our back */
            ReferenceObject(CONTAINING_RECORD(SearchContext->Next, ADDRESS_FILE, ListEntry));
        }

        /* Reference the returned address file before dereferencing the starting
         * address file because it may be that Current == StartingAddrFile */
        ReferenceObject(Current);
    }
    else
        Current = NULL;

    DereferenceObject(StartingAddrFile);

    TcpipReleaseSpinLock(&AddressFileListLock, OldIrql);

    return Current;
}

Referenced by AddrSearchFirst(), RawIpReceive(), and UDPReceive().

AddrWidenAddress()

VOID AddrWidenAddress	(	PIP_ADDRESS	Network,
		PIP_ADDRESS	Source,
		PIP_ADDRESS	Netmask
	)

Definition at line 86 of file address.c.

                                     {
    if( Netmask->Type == IP_ADDRESS_V4 ) {
        Network->Type = Netmask->Type;
    Network->Address.IPv4Address =
        Source->Address.IPv4Address & Netmask->Address.IPv4Address;
    } else {
    TI_DbgPrint(DEBUG_DATALINK, ("Don't know address type %d\n",
                     Netmask->Type));
    *Network = *Source;
    }
}

Referenced by IPAddInterfaceRoute(), and IPRemoveInterfaceRoute().

inet_addr()

unsigned long NTAPI inet_addr

(

const char *

)

Definition at line 307 of file address.c.

{
    ULONG Octets[4] = {0,0,0,0};
    ULONG i = 0;

    if(!AddrString)
        return -1;

    while(*AddrString)
        {
            CHAR c = *AddrString;
            AddrString++;

            if(c == '.')
                {
                    i++;
                    continue;
                }

            if(c < '0' || c > '9')
                return -1;

            Octets[i] *= 10;
            Octets[i] += (c - '0');

            if(Octets[i] > 255)
                return -1;
        }

    return (Octets[3] << 24) + (Octets[2] << 16) + (Octets[1] << 8) + Octets[0];
}

IPAddressFree()

VOID IPAddressFree

(

PVOID

Object

)

Definition at line 99 of file address.c.

{
    ExFreePoolWithTag(Object, IP_ADDRESS_TAG);
}

IPv4NToHl()

ULONG IPv4NToHl

(

ULONG

Address

)

Definition at line 56 of file address.c.

                                 {
    return
    ((Address & 0xff) << 24) |
    ((Address & 0xff00) << 8) |
    ((Address >> 8) & 0xff00) |
    ((Address >> 24) & 0xff);
}

Referenced by AddrCountPrefixBits().