739 lines
17 KiB
C++
739 lines
17 KiB
C++
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/*++
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Copyright (C) Microsoft Corporation, 1996 - 1999
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Module Name:
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Tower.cxx
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Abstract:
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Common code from building and exploding towers. Each
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protocol supported by the transport interface needs
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a section in this file.
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Author:
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Mario Goertzel [MarioGo]
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Revision History:
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MarioGo 11/11/1996 Bits 'n pieces
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--*/
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#include <precomp.hxx>
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#ifndef UNALIGNED
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#error UNALIGNED macro undefined
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#endif
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// Tower structures are totally packed
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#include <pshpack1.h>
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// CODE REVIEW: cleanup mtrt tower stuff and have only one copy of these.
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typedef struct _FLOOR_0OR1 {
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unsigned short ProtocolIdByteCount;
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byte FloorId;
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UUID Uuid;
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unsigned short MajorVersion;
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unsigned short AddressByteCount;
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unsigned short MinorVersion;
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} FLOOR_0OR1;
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typedef FLOOR_0OR1 UNALIGNED * PFLOOR_0OR1;
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typedef struct _FLOOR_234 {
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unsigned short ProtocolIdByteCount;
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byte FloorId;
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unsigned short AddressByteCount;
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byte Data[2];
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} FLOOR_234;
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typedef FLOOR_234 UNALIGNED * PFLOOR_234;
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typedef struct _FLOOR_2 {
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unsigned short ProtocolIdByteCount;
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byte RpcProtocol;
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unsigned short AddressByteCount;
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unsigned short RpcProtocolMinor;
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} FLOOR_2;
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typedef FLOOR_2 UNALIGNED * PFLOOR_2;
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typedef struct _FLOOR_3 {
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unsigned short ProtocolIdByteCount;
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byte PortType;
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unsigned short AddressByteCount;
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char EndPoint[2];
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} FLOOR_3;
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typedef FLOOR_3 UNALIGNED * PFLOOR_3;
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typedef struct _FLOOR_4 {
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unsigned short ProtocolIdByteCount;
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byte HostType;
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unsigned short AddressByteCount;
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char Host[2];
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} FLOOR_4;
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typedef FLOOR_4 UNALIGNED * PFLOOR_4;
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typedef struct _GENERIC_ID {
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UUID Uuid;
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unsigned short MajorVersion;
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unsigned short MinorVersion;
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} GENERIC_ID;
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typedef GENERIC_ID UNALIGNED * PGENERIC_ID;
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#include <poppack.h>
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// Restore normal packing
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// Transport protocols defined in cotrans.hxx and dgtrans.hxx
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// Given a FLOOR type and a pointer computes a pointer to the next floor.
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#define NEXTFLOOR(t,x) (t)((byte *)x + ((t)x)->ProtocolIdByteCount \
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+ ((t)x)->AddressByteCount \
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+ sizeof(((t)x)->ProtocolIdByteCount)\
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+ sizeof(((t)x)->AddressByteCount))
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RPC_STATUS
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RPC_ENTRY
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COMMON_TowerConstruct(
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IN PCHAR Protseq,
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IN PCHAR NetworkAddress,
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IN PCHAR Endpoint,
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OUT PUSHORT Floors,
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OUT PULONG ByteCount,
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OUT PUCHAR *Tower
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)
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/*++
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Routine Description:
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Constructs a OSF tower for the protocol, network address and endpoint.
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Arguments:
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Protseq - The protocol for the tower.
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NetworkAddress - The network address to be encoded in the tower.
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Endpoint - The endpoint to be encoded in the tower.
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Floors - The number of twoer floors it encoded into the tower.
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ByteCount - The size of the "upper-transport-specific" tower that
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is encoded by this call.
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Tower - The encoded "upper tower" that is encoded by this call.
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This caller is responsible for freeing this memory.
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Return Value:
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RPC_S_OK
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RPC_S_OUT_OF_MEMORY
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RPC_S_OUT_OF_RESOURCES
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RPC_S_INVALID_RPC_PROTSEQ
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--*/
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{
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PFLOOR_234 Floor;
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ADDRINFO *AddrInfo;
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ADDRINFO Hint;
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INT index = MapProtseq(Protseq);
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if (index == 0)
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{
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return(RPC_S_INVALID_RPC_PROTSEQ);
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}
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RPC_TRANSPORT_INTERFACE pInfo = TransportTable[index].pInfo;
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ASSERT(pInfo);
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if (Endpoint == NULL || *Endpoint == '\0')
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{
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Endpoint = pInfo->WellKnownEndpoint;
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}
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// Currently all protocols have 5 floors. If a new protocol
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// is added with < 5 floors watch out in tower explode.
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*Floors = 5;
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// Figure out the size of the tower
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size_t addr_size;
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size_t ept_size;
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size_t size;
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// Figure out the endpoint size
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switch (index)
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{
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// Protocols which use port numbers (ushorts) as endpoints
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case TCP:
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#ifdef SPX_ON
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case SPX:
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#endif
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case HTTP:
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case UDP:
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#ifdef IPX_ON
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case IPX:
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#endif
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ept_size = 2;
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break;
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// Protocols which use strings as endpoints
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case NMP:
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#ifdef NETBIOS_ON
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case NBF:
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case NBT:
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case NBI:
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#endif
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#ifdef NCADG_MQ_ON
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case MSMQ:
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#endif
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#ifdef APPLETALK_ON
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case DSP:
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#endif
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{
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ASSERT(Endpoint && *Endpoint);
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ept_size = strlen(Endpoint) + 1;
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break;
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}
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#if DBG
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default:
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ASSERT(0);
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return(RPC_S_INTERNAL_ERROR);
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#endif
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}
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// Figure out the address size
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switch(index)
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{
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// Protocols which use 4 bytes longs as the address size
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case TCP:
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case UDP:
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case HTTP:
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{
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addr_size = 4;
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break;
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}
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#ifndef SPX_IPX_OFF
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// Protocols which use 10 byte (32+48 bit) address size
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#ifdef SPX_ON
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case SPX:
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#endif
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#ifdef IPX_ON
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case IPX:
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#endif
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{
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addr_size = 10;
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break;
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}
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#endif
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// Protocols which use the string as the address
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case NMP:
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#ifdef NETBIOS_ON
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case NBF:
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case NBT:
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case NBI:
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#endif
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#ifdef NCADG_MQ_ON
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case MSMQ:
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#endif
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#ifdef APPLETALK_ON
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case DSP:
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#endif
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{
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if ((NetworkAddress == NULL) || (*NetworkAddress== '\0'))
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{
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addr_size = 2;
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}
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else
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{
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addr_size = strlen(NetworkAddress) + 1;
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}
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break;
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}
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#if DBG
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default:
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ASSERT(0);
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return(RPC_S_INTERNAL_ERROR);
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#endif
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}
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// Compute total size.
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// Note: FLOOR_234 already contains 2 bytes of data.
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size = addr_size + ept_size + 2*(sizeof(FLOOR_234) - 2);
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// Allocate tower
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*Tower = new UCHAR[size];
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if (!*Tower)
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{
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return(RPC_S_OUT_OF_MEMORY);
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}
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*ByteCount = size;
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// Now fill-in the endpoint part of the tower
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Floor = (PFLOOR_234)*Tower;
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Floor->ProtocolIdByteCount = 1;
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Floor->FloorId = (UCHAR)pInfo->TransId;
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switch(index)
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{
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// Protocols which use big endian ushorts
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case TCP:
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case HTTP:
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#ifdef SPX_ON
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case SPX:
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#endif
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case UDP:
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#ifdef IPX_ON
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case IPX:
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#endif
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{
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Floor->AddressByteCount = 2;
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USHORT port = (USHORT) atoi(Endpoint);
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port = htons(port);
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memcpy((char PAPI *)&Floor->Data[0], &port, 2);
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break;
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}
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// Protocols which use ansi strings
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case NMP:
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#ifdef NETBIOS_ON
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case NBT:
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case NBF:
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case NBI:
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#endif
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#ifdef NCADG_MQ_ON
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case MSMQ:
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#endif
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#ifdef APPLETALK_ON
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case DSP:
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#endif
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{
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Floor->AddressByteCount = (unsigned short) ept_size;
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memcpy(&Floor->Data[0], Endpoint, ept_size);
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break;
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}
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#if DBG
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default:
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ASSERT(0);
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#endif
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}
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// Move to the next tower and fill-in the address part of the tower
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Floor = NEXTFLOOR(PFLOOR_234, Floor);
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Floor->ProtocolIdByteCount = 1;
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Floor->FloorId = (unsigned char) pInfo->TransAddrId;
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switch (index)
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{
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// IP protocols use 4 byte big endian IP addreses
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case TCP:
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case HTTP:
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case UDP:
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{
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int err;
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RpcpMemorySet(&Hint, 0, sizeof(Hint));
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Hint.ai_flags = AI_NUMERICHOST;
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err = getaddrinfo(NetworkAddress,
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NULL,
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&Hint,
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&AddrInfo);
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if (err)
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{
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// if it's not a dot address, keep it zero
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RpcpMemorySet(&Floor->Data[0], 0, 4);
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}
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else
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{
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RpcpMemoryCopy(&Floor->Data[0], &(((SOCKADDR_IN *)AddrInfo->ai_addr)->sin_addr.s_addr), 4);
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freeaddrinfo(AddrInfo);
|
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}
|
||
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|
||
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Floor->AddressByteCount = 4;
|
||
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break;
|
||
|
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}
|
||
|
|
|
||
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|
#ifndef SPX_IPX_OFF
|
||
|
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// IPX protocols use little endian net (32 bit) + node (48 bit) addresses
|
||
|
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#ifdef SPX_ON
|
||
|
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case SPX:
|
||
|
|
#endif
|
||
|
|
#ifdef IPX_ON
|
||
|
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case IPX:
|
||
|
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#endif
|
||
|
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{
|
||
|
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Floor->AddressByteCount = 10;
|
||
|
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memset(&Floor->Data[0], 0, 10); // Zero is fine..
|
||
|
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break;
|
||
|
|
}
|
||
|
|
#endif
|
||
|
|
|
||
|
|
// Protocols which use string names.
|
||
|
|
case NMP:
|
||
|
|
|
||
|
|
#ifdef NETBIOS_ON
|
||
|
|
case NBF:
|
||
|
|
case NBT:
|
||
|
|
case NBI:
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#ifdef NCADG_MQ_ON
|
||
|
|
case MSMQ:
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#ifdef APPLETALK_ON
|
||
|
|
case DSP:
|
||
|
|
#endif
|
||
|
|
{
|
||
|
|
if ((NetworkAddress) && (*NetworkAddress))
|
||
|
|
{
|
||
|
|
Floor->AddressByteCount = (unsigned short) addr_size;
|
||
|
|
memcpy(&Floor->Data[0], NetworkAddress, addr_size);
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
Floor->AddressByteCount = 2;
|
||
|
|
Floor->Data[0] = 0;
|
||
|
|
}
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
|
||
|
|
#if DBG
|
||
|
|
default:
|
||
|
|
ASSERT(0);
|
||
|
|
#endif
|
||
|
|
}
|
||
|
|
|
||
|
|
return(RPC_S_OK);
|
||
|
|
}
|
||
|
|
|
||
|
|
const INT HTTP_OLD_ADDRESS_ID = 0x20;
|
||
|
|
|
||
|
|
RPC_STATUS
|
||
|
|
RPC_ENTRY
|
||
|
|
COMMON_TowerExplode(
|
||
|
|
IN PUCHAR Tower,
|
||
|
|
OUT PCHAR *Protseq,
|
||
|
|
OUT PCHAR *NetworkAddress,
|
||
|
|
OUT PCHAR *Endpoint
|
||
|
|
)
|
||
|
|
/*++
|
||
|
|
|
||
|
|
Routine Description:
|
||
|
|
|
||
|
|
Decodes an OSF transport "upper tower" for the runtime.
|
||
|
|
|
||
|
|
Arguments:
|
||
|
|
|
||
|
|
Tower - The encoded "upper tower" to decode
|
||
|
|
Protseq - The protseq encoded in the Tower
|
||
|
|
Does not need to be freed by the caller.
|
||
|
|
NetworkAddress - The network address encoded in the Tower
|
||
|
|
Must be freed by the caller.
|
||
|
|
Endpoint - The endpoint encoded in the Tower.
|
||
|
|
Must be freed by the caller.
|
||
|
|
|
||
|
|
Return Value:
|
||
|
|
|
||
|
|
RPC_S_OK
|
||
|
|
|
||
|
|
RPC_S_INVALID_RPC_PROTSEQ
|
||
|
|
|
||
|
|
RPC_S_OUT_OF_MEMORY
|
||
|
|
|
||
|
|
--*/
|
||
|
|
{
|
||
|
|
PFLOOR_234 Floor = (PFLOOR_234)Tower;
|
||
|
|
PFLOOR_234 NextFloor = NEXTFLOOR(PFLOOR_234, Tower);
|
||
|
|
RPC_STATUS Status = RPC_S_OK;
|
||
|
|
INT Index;
|
||
|
|
|
||
|
|
// Find the protocol based first on the ID from this floor,
|
||
|
|
// and then the next floor. We only dereference the next
|
||
|
|
// floor if we match the ID on this floor.
|
||
|
|
|
||
|
|
for (unsigned i = 1; i < cTransportTable; i++)
|
||
|
|
{
|
||
|
|
if (TransportTable[i].ProtocolTowerId == Floor->FloorId)
|
||
|
|
{
|
||
|
|
if (TransportTable[i].AddressTowerId == NextFloor->FloorId)
|
||
|
|
break;
|
||
|
|
|
||
|
|
//
|
||
|
|
// The & 0x0F is needed because the legacy server code incorrectly
|
||
|
|
// cleared the high nibble before sending the address tower id
|
||
|
|
//
|
||
|
|
if ((TransportTable[i].AddressTowerId & 0x0F) == NextFloor->FloorId )
|
||
|
|
break;
|
||
|
|
|
||
|
|
// N.B. Old (Win9x/NT4) clients would send a AddressTowerId of 0x20
|
||
|
|
// (HTTP_OLD_ADDRESS_ID). We need to match this as well.
|
||
|
|
if ((Floor->FloorId == HTTP_TOWER_ID)
|
||
|
|
&& (NextFloor->FloorId == HTTP_OLD_ADDRESS_ID))
|
||
|
|
break;
|
||
|
|
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
if (i == cTransportTable)
|
||
|
|
{
|
||
|
|
return(RPC_S_INVALID_RPC_PROTSEQ);
|
||
|
|
}
|
||
|
|
|
||
|
|
Index = i;
|
||
|
|
|
||
|
|
RPC_TRANSPORT_INTERFACE pInfo = TransportTable[Index].pInfo;
|
||
|
|
|
||
|
|
ASSERT(pInfo);
|
||
|
|
|
||
|
|
//
|
||
|
|
// Figure out the protseq
|
||
|
|
//
|
||
|
|
|
||
|
|
if (ARGUMENT_PRESENT(Protseq))
|
||
|
|
{
|
||
|
|
size_t len = RpcpStringLength(pInfo->ProtocolSequence);
|
||
|
|
*Protseq = new char[len + 1];
|
||
|
|
if (*Protseq)
|
||
|
|
{
|
||
|
|
RPC_CHAR *MySrc = (RPC_CHAR *) pInfo->ProtocolSequence;
|
||
|
|
char *MyDest = *Protseq;
|
||
|
|
|
||
|
|
while (*MyDest++ = (char) *MySrc++);
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
return(RPC_S_OUT_OF_MEMORY);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
//
|
||
|
|
// Figure out the endpoint
|
||
|
|
//
|
||
|
|
|
||
|
|
if (ARGUMENT_PRESENT(Endpoint))
|
||
|
|
{
|
||
|
|
Status = RPC_S_OUT_OF_MEMORY;
|
||
|
|
|
||
|
|
switch(Index)
|
||
|
|
{
|
||
|
|
// Protocols which use strings as the endpoint format.
|
||
|
|
case NMP:
|
||
|
|
|
||
|
|
#ifdef NETBIOS_ON
|
||
|
|
case NBT:
|
||
|
|
case NBI:
|
||
|
|
case NBF:
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#ifdef NCADG_MQ_ON
|
||
|
|
case MSMQ:
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#ifdef APPLETALK_ON
|
||
|
|
case DSP:
|
||
|
|
#endif
|
||
|
|
{
|
||
|
|
*Endpoint = new CHAR[Floor->AddressByteCount];
|
||
|
|
if (*Endpoint)
|
||
|
|
{
|
||
|
|
memcpy(*Endpoint, (PCHAR)&Floor->Data[0],
|
||
|
|
Floor->AddressByteCount);
|
||
|
|
Status = RPC_S_OK;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
break;
|
||
|
|
|
||
|
|
// Protocols which use ushort's as the endpoint format.
|
||
|
|
case TCP:
|
||
|
|
#ifdef SPX_ON
|
||
|
|
case SPX:
|
||
|
|
#endif
|
||
|
|
case HTTP:
|
||
|
|
case UDP:
|
||
|
|
#ifdef IPX_ON
|
||
|
|
case IPX:
|
||
|
|
#endif
|
||
|
|
{
|
||
|
|
USHORT PortNum = *(PUSHORT)(&Floor->Data[0]);
|
||
|
|
|
||
|
|
PortNum = RpcpByteSwapShort(PortNum); // Towers are big endian.
|
||
|
|
|
||
|
|
*Endpoint = new CHAR[6]; // 65535'\0'
|
||
|
|
if (*Endpoint)
|
||
|
|
{
|
||
|
|
_itoa(PortNum, *Endpoint, 10);
|
||
|
|
Status = RPC_S_OK;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
break;
|
||
|
|
|
||
|
|
default:
|
||
|
|
ASSERT(0);
|
||
|
|
}
|
||
|
|
|
||
|
|
if (Status != RPC_S_OK)
|
||
|
|
{
|
||
|
|
if (ARGUMENT_PRESENT(Protseq))
|
||
|
|
{
|
||
|
|
delete *Protseq;
|
||
|
|
*Protseq = 0;
|
||
|
|
}
|
||
|
|
return(Status);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
//
|
||
|
|
// Now the hard part, figure out the network address.
|
||
|
|
//
|
||
|
|
|
||
|
|
if (ARGUMENT_PRESENT(NetworkAddress))
|
||
|
|
{
|
||
|
|
Floor = NEXTFLOOR(PFLOOR_234, Floor);
|
||
|
|
Status = RPC_S_OUT_OF_MEMORY;
|
||
|
|
|
||
|
|
switch(Index)
|
||
|
|
{
|
||
|
|
// Protocols which use strings as their network address
|
||
|
|
case NMP:
|
||
|
|
|
||
|
|
#ifdef NETBIOS_ON
|
||
|
|
case NBF:
|
||
|
|
case NBT:
|
||
|
|
case NBI:
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#ifdef NCADG_MQ_ON
|
||
|
|
case MSMQ:
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#ifdef APPLETALK_ON
|
||
|
|
case DSP:
|
||
|
|
#endif
|
||
|
|
*NetworkAddress = new CHAR[Floor->AddressByteCount];
|
||
|
|
if (*NetworkAddress)
|
||
|
|
{
|
||
|
|
memcpy(*NetworkAddress,
|
||
|
|
&Floor->Data[0],
|
||
|
|
Floor->AddressByteCount);
|
||
|
|
Status = RPC_S_OK;
|
||
|
|
}
|
||
|
|
break;
|
||
|
|
|
||
|
|
// Protocols using IP addresses
|
||
|
|
case TCP:
|
||
|
|
case HTTP:
|
||
|
|
case UDP:
|
||
|
|
{
|
||
|
|
|
||
|
|
if (Floor->AddressByteCount != 4)
|
||
|
|
{
|
||
|
|
Status = RPC_S_INVALID_RPC_PROTSEQ;
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
|
||
|
|
struct in_addr in;
|
||
|
|
in.S_un.S_un_b.s_b1 = Floor->Data[0];
|
||
|
|
in.S_un.S_un_b.s_b2 = Floor->Data[1];
|
||
|
|
in.S_un.S_un_b.s_b3 = Floor->Data[2];
|
||
|
|
in.S_un.S_un_b.s_b4 = Floor->Data[3];
|
||
|
|
|
||
|
|
PCHAR t = inet_ntoa(in);
|
||
|
|
if (t)
|
||
|
|
{
|
||
|
|
*NetworkAddress = new CHAR[16+1];
|
||
|
|
if (*NetworkAddress)
|
||
|
|
{
|
||
|
|
strcpy(*NetworkAddress, t);
|
||
|
|
Status = RPC_S_OK;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
ASSERT(0);
|
||
|
|
Status = RPC_S_INVALID_RPC_PROTSEQ;
|
||
|
|
}
|
||
|
|
|
||
|
|
}
|
||
|
|
break;
|
||
|
|
|
||
|
|
#ifndef SPX_IPX_OFF
|
||
|
|
// Protocols using IPX 80 bit addresses
|
||
|
|
#ifdef SPX_ON
|
||
|
|
case SPX:
|
||
|
|
#endif
|
||
|
|
#ifdef IPX_ON
|
||
|
|
case IPX:
|
||
|
|
#endif
|
||
|
|
{
|
||
|
|
if (Floor->AddressByteCount != 10)
|
||
|
|
{
|
||
|
|
Status = RPC_S_INVALID_RPC_PROTSEQ;
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
|
||
|
|
// Format: ~NNNNNNNNAAAAAAAAAAAA'\0'
|
||
|
|
// Network number (32bits) and IEEE 802 address (48bits)
|
||
|
|
|
||
|
|
*NetworkAddress = new CHAR[1 + 8 + 12 + 1];
|
||
|
|
if (*NetworkAddress)
|
||
|
|
{
|
||
|
|
PCHAR p = *NetworkAddress;
|
||
|
|
PCHAR pInput = (PCHAR) &Floor->Data[0];
|
||
|
|
*p++ = '~';
|
||
|
|
for (int i = 0; i < 10; i++)
|
||
|
|
{
|
||
|
|
CHAR c = *pInput ++;
|
||
|
|
*p++ = (char) HexDigits[(c >> 4) & 0xF];
|
||
|
|
*p++ = (char) HexDigits[ c & 0xF];
|
||
|
|
}
|
||
|
|
*p = '\0';
|
||
|
|
Status = RPC_S_OK;
|
||
|
|
}
|
||
|
|
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
#endif
|
||
|
|
}
|
||
|
|
|
||
|
|
if (Status != RPC_S_OK)
|
||
|
|
{
|
||
|
|
if (ARGUMENT_PRESENT(Endpoint))
|
||
|
|
{
|
||
|
|
delete *Endpoint;
|
||
|
|
*Endpoint = 0;
|
||
|
|
}
|
||
|
|
if (ARGUMENT_PRESENT(Protseq))
|
||
|
|
{
|
||
|
|
delete *Protseq;
|
||
|
|
*Protseq = 0;
|
||
|
|
}
|
||
|
|
return(Status);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
ASSERT(Status == RPC_S_OK);
|
||
|
|
return(Status);
|
||
|
|
}
|
||
|
|
|