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windows-server-2003/com/rpc/ndr20/auxilary.cxx

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/*+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
Copyright (c) 1993-2000 Microsoft Corporation
Module Name :
auxilary.c
Abstract :
This file contains auxilary routines used for initialization of the
RPC and stub messages and the offline batching of common code sequences
needed by the stubs.
Author :
David Kays dkays September 1993.
Revision History :
---------------------------------------------------------------------*/
#define _OLE32_
#include "ndrp.h"
#include "ndrole.h"
#include "ndrtypes.h"
#include "limits.h"
#include "interp.h"
#include "mulsyntx.h"
#include "pipendr.h"
#include "asyncndr.h"
#include "auxilary.h"
#include "pointerq.h"
/*++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
Static data for NS library operations
---------------------------------------------------------------------*/
int NsDllLoaded = 0;
/*++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
OLE routines for interface pointer marshalling
---------------------------------------------------------------------*/
STDAPI NdrpCoCreateInstance(
REFCLSID rclsid,
LPUNKNOWN pUnkOuter,
DWORD dwClsContext,
REFIID riid,
LPVOID * ppv);
STDAPI NdrpCoReleaseMarshalData(
IStream *pStm);
STDAPI NdrpDcomChannelSetHResult(
PRPC_MESSAGE pmsg,
ULONG * pulReserved,
HRESULT appsHR );
STDAPI NdrCoGetPSClsid(
REFIID iid,
LPCLSID lpclsid);
HINSTANCE hOle32 = 0;
RPC_GET_CLASS_OBJECT_ROUTINE NdrCoGetClassObject;
RPC_GET_CLASS_OBJECT_ROUTINE * pfnCoGetClassObject = &NdrCoGetClassObject;
RPC_GET_MARSHAL_SIZE_MAX_ROUTINE NdrCoGetMarshalSizeMax;
RPC_GET_MARSHAL_SIZE_MAX_ROUTINE * pfnCoGetMarshalSizeMax = &NdrCoGetMarshalSizeMax;
RPC_MARSHAL_INTERFACE_ROUTINE NdrCoMarshalInterface;
RPC_MARSHAL_INTERFACE_ROUTINE * pfnCoMarshalInterface = &NdrCoMarshalInterface;
RPC_UNMARSHAL_INTERFACE_ROUTINE NdrCoUnmarshalInterface;
RPC_UNMARSHAL_INTERFACE_ROUTINE * pfnCoUnmarshalInterface = &NdrCoUnmarshalInterface;
RPC_STRING_FROM_IID OleStringFromIID;
RPC_STRING_FROM_IID * pfnStringFromIID = &OleStringFromIID;
RPC_GET_PS_CLSID NdrCoGetPSClsid;
RPC_GET_PS_CLSID * pfnCoGetPSClsid = &NdrCoGetPSClsid;
RPC_CO_CREATE_INSTANCE NdrpCoCreateInstance;
RPC_CO_CREATE_INSTANCE * pfnCoCreateInstance = &NdrpCoCreateInstance;
RPC_CLIENT_ALLOC NdrCoTaskMemAlloc;
RPC_CLIENT_ALLOC * pfnCoTaskMemAlloc = &NdrCoTaskMemAlloc;
RPC_CLIENT_FREE NdrCoTaskMemFree;
RPC_CLIENT_FREE * pfnCoTaskMemFree = &NdrCoTaskMemFree;
RPC_CO_RELEASEMARSHALDATA NdrpCoReleaseMarshalData;
RPC_CO_RELEASEMARSHALDATA * pfnCoReleaseMarshalData = &NdrpCoReleaseMarshalData;
RPC_DCOMCHANNELSETHRESULT NdrpDcomChannelSetHResult;
RPC_DCOMCHANNELSETHRESULT * pfnDcomChannelSetHResult = &NdrpDcomChannelSetHResult;
RPC_NS_GET_BUFFER_ROUTINE pRpcNsGetBuffer;
RPC_NS_SEND_RECEIVE_ROUTINE pRpcNsSendReceive;
RPC_NS_NEGOTIATETRANSFERSYNTAX_ROUTINE pRpcNsNegotiateTransferSyntax;
HRESULT NdrLoadOleRoutines()
{
void * pTempRoutine;
//Load ole32.dll
if(hOle32 == 0)
{
#ifdef DOSWIN32RPC
hOle32 = LoadLibraryA("OLE32");
#else
hOle32 = LoadLibraryW(L"OLE32");
#endif // DOSWIN32C
if(hOle32 == 0)
return HRESULT_FROM_WIN32(GetLastError());
}
pTempRoutine = GetProcAddress(hOle32, "CoGetClassObject");
if(pTempRoutine == 0)
return HRESULT_FROM_WIN32(GetLastError());
else
pfnCoGetClassObject = (RPC_GET_CLASS_OBJECT_ROUTINE*) pTempRoutine;
pTempRoutine = GetProcAddress(hOle32, "CoGetMarshalSizeMax");
if(pTempRoutine == 0)
return HRESULT_FROM_WIN32(GetLastError());
else
pfnCoGetMarshalSizeMax = (RPC_GET_MARSHAL_SIZE_MAX_ROUTINE*) pTempRoutine;
pTempRoutine = GetProcAddress(hOle32, "CoMarshalInterface");
if(pTempRoutine == 0)
return HRESULT_FROM_WIN32(GetLastError());
else
pfnCoMarshalInterface = (RPC_MARSHAL_INTERFACE_ROUTINE*) pTempRoutine;
pTempRoutine = GetProcAddress(hOle32, "CoUnmarshalInterface");
if(pTempRoutine == 0)
return HRESULT_FROM_WIN32(GetLastError());
else
pfnCoUnmarshalInterface = (RPC_UNMARSHAL_INTERFACE_ROUTINE*) pTempRoutine;
pTempRoutine = GetProcAddress(hOle32, "StringFromIID");
if(pTempRoutine == 0)
return HRESULT_FROM_WIN32(GetLastError());
else
pfnStringFromIID = (RPC_STRING_FROM_IID*) pTempRoutine;
pTempRoutine = GetProcAddress(hOle32, "CoGetPSClsid");
if(pTempRoutine == 0)
return HRESULT_FROM_WIN32(GetLastError());
else
pfnCoGetPSClsid = (RPC_GET_PS_CLSID*) pTempRoutine;
pTempRoutine = GetProcAddress(hOle32, "CoTaskMemAlloc");
if(pTempRoutine == 0)
return HRESULT_FROM_WIN32(GetLastError());
else
pfnCoTaskMemAlloc = (RPC_CLIENT_ALLOC*) pTempRoutine;
pTempRoutine = GetProcAddress(hOle32, "CoTaskMemFree");
if(pTempRoutine == 0)
return HRESULT_FROM_WIN32(GetLastError());
else
pfnCoTaskMemFree = (RPC_CLIENT_FREE*) pTempRoutine;
pTempRoutine = GetProcAddress(hOle32, "CoCreateInstance");
if(pTempRoutine == 0)
return HRESULT_FROM_WIN32(GetLastError());
else
pfnCoCreateInstance = (RPC_CO_CREATE_INSTANCE*) pTempRoutine;
pTempRoutine = GetProcAddress(hOle32, "CoReleaseMarshalData");
if(pTempRoutine == 0)
return HRESULT_FROM_WIN32(GetLastError());
else
pfnCoReleaseMarshalData = (RPC_CO_RELEASEMARSHALDATA*) pTempRoutine;
pTempRoutine = GetProcAddress(hOle32, "DcomChannelSetHResult");
if(pTempRoutine == 0)
return HRESULT_FROM_WIN32(GetLastError());
else
pfnDcomChannelSetHResult = (RPC_DCOMCHANNELSETHRESULT*) pTempRoutine;
return( (HRESULT)0 );
}
HRESULT STDAPICALLTYPE
NdrCoGetClassObject(
REFCLSID rclsid,
DWORD dwClsContext,
void *pvReserved,
REFIID riid,
void **ppv)
/*++
Routine Description:
Loads a class factory. This function forwards the call to ole32.dll.
Arguments:
rclsid - Supplies the CLSID of the class to be loaded.
dwClsContext - Supplies the context in which to load the code.
pvReserved - Must be NULL.
riid - Supplies the IID of the desired interface.
ppv - Returns a pointer to the class factory.
Return Value:
S_OK
--*/
{
HRESULT hr;
if ( FAILED(hr = NdrLoadOleRoutines()) )
return hr;
return (*pfnCoGetClassObject)(rclsid, dwClsContext, pvReserved, riid, ppv);
}
HRESULT STDAPICALLTYPE
NdrCoGetMarshalSizeMax(
ULONG * pulSize,
REFIID riid,
LPUNKNOWN pUnk,
DWORD dwDestContext,
LPVOID pvDestContext,
DWORD mshlflags)
/*++
Routine Description:
Calculates the maximum size of a marshalled interface pointer.
This function forwards the call to ole32.dll.
Arguments:
pulSize - Returns an upper bound for the size of a marshalled interface pointer.
riid - Supplies the IID of the interface to be marshalled.
pUnk - Supplies a pointer to the object to be marshalled.
dwDestContext - Supplies the destination of the marshalled interface pointer.
pvDestContext
mshlflags - Flags. See the MSHFLAGS enumeration.
Return Value:
S_OK
--*/
{
HRESULT hr;
if ( FAILED(hr = NdrLoadOleRoutines()) )
return hr;
return (*pfnCoGetMarshalSizeMax)(pulSize, riid, pUnk, dwDestContext, pvDestContext, mshlflags);
}
RPC_STATUS
RPC_ENTRY
NdrGetDcomProtocolVersion(
PMIDL_STUB_MESSAGE pStubMsg,
RPC_VERSION * pVersion )
/*
This is a helper routine for OLEAUT guys.
It returns the actually negotiated protocol version for the connection,
i.e. a "common denominator" - lower of the two.
*/
{
HRESULT Hr = E_FAIL;
if ( pStubMsg->pRpcChannelBuffer )
{
IRpcChannelBuffer2 * pBuffer2 = 0;
Hr = ((IRpcChannelBuffer*)pStubMsg->pRpcChannelBuffer)->
QueryInterface( IID_IRpcChannelBuffer2,
(void**) & pBuffer2 );
if ( Hr == S_OK )
{
Hr = pBuffer2->GetProtocolVersion( (DWORD *) pVersion );
pBuffer2->Release( );
}
}
return Hr;
}
unsigned long
FixWireRepForDComVerGTE54(
PMIDL_STUB_MESSAGE pStubMsg )
/*
Compares the current DCOM protocol version with the desired version ( 5.4 )
Specific to interface pointer array and embedded conf struct wire rep fix.
*/
{
if ( pStubMsg->pRpcChannelBuffer )
{
RPC_VERSION currRpcVersion = { 0, 0 };
if ( SUCCEEDED ( NdrGetDcomProtocolVersion( pStubMsg, &currRpcVersion ) ) )
{
if ( currRpcVersion.MajorVersion > 5 )
{
return TRUE;
}
else
{
return currRpcVersion.MinorVersion >= 4;
}
}
}
return TRUE;
}
HRESULT STDAPICALLTYPE
NdrCoMarshalInterface(
LPSTREAM pStm,
REFIID riid,
LPUNKNOWN pUnk,
DWORD dwDestContext,
LPVOID pvDestContext,
DWORD mshlflags)
/*++
Routine Description:
Marshals an interface pointer.
This function forwards the call to ole32.dll.
Arguments:
pStm - Supplies the target stream.
riid - Supplies the IID of the interface to be marshalled.
pUnk - Supplies a pointer to the object to be marshalled.
dwDestContext - Specifies the destination context
pvDestContext
mshlflags - Flags. See the MSHFLAGS enumeration.
Return Value:
S_OK
--*/
{
HRESULT hr;
if ( FAILED(hr = NdrLoadOleRoutines()) )
return hr;
return (*pfnCoMarshalInterface)(pStm, riid, pUnk, dwDestContext, pvDestContext, mshlflags);
}
HRESULT STDAPICALLTYPE
NdrCoUnmarshalInterface(
LPSTREAM pStm,
REFIID riid,
void ** ppv)
/*++
Routine Description:
Unmarshals an interface pointer from a stream.
This function forwards the call to ole32.dll.
Arguments:
pStm - Supplies the stream containing the marshalled interface pointer.
riid - Supplies the IID of the interface pointer to be unmarshalled.
ppv - Returns the unmarshalled interface pointer.
Return Value:
S_OK
--*/
{
HRESULT hr;
if ( FAILED(hr = NdrLoadOleRoutines()) )
return hr;
return (*pfnCoUnmarshalInterface)(pStm, riid, ppv);
}
STDAPI NdrpCoCreateInstance(
REFCLSID rclsid,
LPUNKNOWN pUnkOuter,
DWORD dwClsContext,
REFIID riid,
LPVOID * ppv)
{
HRESULT hr;
if ( FAILED(hr = NdrLoadOleRoutines()) )
return hr;
return (*pfnCoCreateInstance) (rclsid, pUnkOuter, dwClsContext, riid, ppv );
}
STDAPI NdrpCoReleaseMarshalData(
IStream *pStm)
{
HRESULT hr;
if ( FAILED(hr = NdrLoadOleRoutines()) )
return hr;
return (*pfnCoReleaseMarshalData) (pStm );
}
STDAPI NdrpDcomChannelSetHResult(
PRPC_MESSAGE pmsg,
ULONG * pulReserved,
HRESULT appsHR )
{
HRESULT hr;
if ( FAILED(hr = NdrLoadOleRoutines()) )
return hr;
return (*pfnDcomChannelSetHResult)( pmsg, pulReserved, appsHR );
}
HRESULT STDAPICALLTYPE OleStringFromIID(
REFIID rclsid,
LPOLESTR FAR* lplpsz)
/*++
Routine Description:
Converts an IID into a string.
This function forwards the call to ole32.dll.
Arguments:
rclsid - Supplies the clsid to convert to string form.
lplpsz - Returns the string form of the clsid (with "{}" around it).
Return Value:
S_OK
--*/
{
HRESULT hr;
if ( FAILED(hr = NdrLoadOleRoutines()) )
return hr;
return (*pfnStringFromIID)(rclsid, lplpsz);
}
STDAPI NdrCoGetPSClsid(
REFIID iid,
LPCLSID lpclsid)
/*++
Routine Description:
Converts an IID into a string.
This function forwards the call to ole32.dll.
Arguments:
rclsid - Supplies the clsid to convert to string form.
lplpsz - Returns the string form of the clsid (with "{}" around it).
Return Value:
S_OK
--*/
{
HRESULT hr;
if ( FAILED(hr = NdrLoadOleRoutines()) )
return hr;
return (*pfnCoGetPSClsid)(iid, lpclsid);
}
void * STDAPICALLTYPE
NdrCoTaskMemAlloc(
size_t cb)
/*++
Routine Description:
Allocate memory using OLE task memory allocator.
This function forwards the call to ole32.dll.
Arguments:
cb - Specifies the amount of memory to be allocated.
Return Value:
This function returns a pointer to the allocated memory.
If an error occurs, this function returns zero.
--*/
{
if ( FAILED(NdrLoadOleRoutines()) )
return 0;
return (*pfnCoTaskMemAlloc)(cb);
}
void STDAPICALLTYPE
NdrCoTaskMemFree(
void * pMemory)
/*++
Routine Description:
Free memory using OLE task memory allocator.
This function forwards the call to ole32.dll.
Arguments:
pMemory - Supplies a pointer to the memory to be freed.
Return Value:
None.
--*/
{
if ( FAILED(NdrLoadOleRoutines()) )
return;
(*pfnCoTaskMemFree)(pMemory);
}
void * RPC_ENTRY NdrOleAllocate(size_t size)
/*++
Routine Description:
Allocate memory via OLE task allocator.
Arguments:
size - Specifies the amount of memory to be allocated.
Return Value:
This function returns a pointer to the allocated memory.
If an error occurs, this function raises an exception.
--*/
{
void *pMemory;
pMemory = (*pfnCoTaskMemAlloc)(size);
if(pMemory == 0)
RpcRaiseException(E_OUTOFMEMORY);
return pMemory;
}
void RPC_ENTRY NdrOleFree(void *pMemory)
/*++
Routine Description:
Free memory using OLE task allocator.
Arguments:
None.
Return Value:
None.
--*/
{
(*pfnCoTaskMemFree)(pMemory);
}
HRESULT STDAPICALLTYPE NdrStringFromIID(
REFIID rclsid,
char * lpsz)
/*++
Routine Description:
Converts an IID into a string.
This function forwards the call to ole32.dll.
Arguments:
rclsid - Supplies the clsid to convert to string form.
lplpsz - Returns the string form of the clsid (with "{}" around it).
Return Value:
S_OK
--*/
{
HRESULT hr;
wchar_t * olestr;
hr = (*pfnStringFromIID)(rclsid, &olestr);
if(SUCCEEDED(hr))
{
WideCharToMultiByte(CP_ACP,
0,
(LPCWSTR)olestr,
-1,
(LPSTR)lpsz,
50,
NULL,
NULL);
NdrOleFree(olestr);
}
return hr;
}
void RPC_ENTRY
NdrClientInitializeNew(
PRPC_MESSAGE pRpcMsg,
PMIDL_STUB_MESSAGE pStubMsg,
PMIDL_STUB_DESC pStubDescriptor,
unsigned int ProcNum
)
/*++
Routine Description :
This routine is called by client side stubs to initialize the RPC message
and stub message, and to get the RPC buffer.
Arguments :
pRpcMsg - pointer to RPC message structure
pStubMsg - pointer to stub message structure
pStubDescriptor - pointer to stub descriptor structure
HandleType - type of binding handle
ProcNum - remote procedure number
--*/
{
NdrClientInitialize( pRpcMsg,
pStubMsg,
pStubDescriptor,
ProcNum );
if ( pStubDescriptor->pMallocFreeStruct )
{
MALLOC_FREE_STRUCT *pMFS = pStubDescriptor->pMallocFreeStruct;
NdrpSetRpcSsDefaults(pMFS->pfnAllocate, pMFS->pfnFree);
}
// This exception should be raised after initializing StubMsg.
if ( pStubDescriptor->Version > NDR_VERSION )
{
NDR_ASSERT( 0, "ClientInitialize : Bad version number" );
RpcRaiseException( RPC_X_WRONG_STUB_VERSION );
}
//
// This is where we initialize fields behind the NT3.5 - NT5.0 field set.
//
#ifdef _CS_CHAR_
if ( NDR_VERSION_6_0 <= pStubDescriptor->Version )
{
pStubMsg->pCSInfo = 0;
}
#endif // _CS_CHAR_
}
void RPC_ENTRY
NdrClientInitialize(
PRPC_MESSAGE pRpcMsg,
PMIDL_STUB_MESSAGE pStubMsg,
PMIDL_STUB_DESC pStubDescriptor,
unsigned int ProcNum )
/*++
Routine Description :
This routine is called by client side stubs to initialize the RPC message
and stub message, and to get the RPC buffer.
Arguments :
pRpcMsg - pointer to RPC message structure
pStubMsg - pointer to stub message structure
pStubDescriptor - pointer to stub descriptor structure
ProcNum - remote procedure number
Notes:
This routine has to be backward compatible with the old binaries built from
-Os stubs. In particular, it cannot touch StubMsg fields outside of
the NT3.5 - NT5.0 field set, i.e. set of fields present since NT3.5 release.
--*/
{
//
// Initialize RPC message fields.
//
// The leftmost bit of the procnum field is supposed to be set to 1 inr
// order for the runtime to know if it is talking to the older stubs or
// not.
//
pRpcMsg->RpcInterfaceInformation = pStubDescriptor->RpcInterfaceInformation;
//#if !defined(__RPC_WIN64__)
pRpcMsg->ProcNum = ProcNum | RPC_FLAGS_VALID_BIT;
//#endif
pRpcMsg->RpcFlags = 0;
pRpcMsg->Handle = 0;
//
// Initialize the Stub messsage fields.
//
pStubMsg->RpcMsg = pRpcMsg;
pStubMsg->StubDesc = pStubDescriptor;
pStubMsg->pfnAllocate = pStubDescriptor->pfnAllocate;
pStubMsg->pfnFree = pStubDescriptor->pfnFree;
pStubMsg->fInDontFree = 0;
pStubMsg->fDontCallFreeInst = 0;
pStubMsg->fInOnlyParam = 0;
pStubMsg->fHasReturn = 0;
pStubMsg->fHasExtensions = 0;
pStubMsg->fHasNewCorrDesc = 0;
pStubMsg->UniquePtrCount= 0;
pStubMsg->IsClient = TRUE;
pStubMsg->BufferLength = 0;
pStubMsg->BufferStart = 0;
pStubMsg->BufferEnd = 0;
pStubMsg->uFlags = 0;
pStubMsg->fBufferValid = FALSE;
pStubMsg->ReuseBuffer = FALSE;
pStubMsg->StackTop = 0;
pStubMsg->IgnoreEmbeddedPointers = FALSE;
pStubMsg->PointerBufferMark = 0;
pStubMsg->pAllocAllNodesContext = 0;
pStubMsg->pPointerQueueState = 0;
pStubMsg->FullPtrRefId = 0;
pStubMsg->PointerLength = 0;
pStubMsg->dwDestContext = MSHCTX_DIFFERENTMACHINE;
pStubMsg->pvDestContext = 0;
pStubMsg->pRpcChannelBuffer = 0;
pStubMsg->pArrayInfo = 0;
pStubMsg->dwStubPhase = 0;
NdrSetupLowStackMark( pStubMsg );
pStubMsg->pAsyncMsg = 0;
pStubMsg->pCorrInfo = 0;
pStubMsg->pCorrMemory = 0;
pStubMsg->pMemoryList = 0;
}
void
MakeSureWeHaveNonPipeArgs(
PMIDL_STUB_MESSAGE pStubMsg,
unsigned long BufferSize )
/*
Routine description:
This routine is called for pipe calls at the server.
After the runtime dispatched to the stub with the first packet,
it makes sure that we have a portion of the buffer big enough
to keep all the non-pipe args.
Arguments:
BufferSize - a pipe call: addtional number of bytes over what we have.
Note:
The buffer location may change from before to after the call.
*/
{
RPC_STATUS Status;
PRPC_MESSAGE pRpcMsg = pStubMsg->RpcMsg;
if ( !(pRpcMsg->RpcFlags & RPC_BUFFER_COMPLETE ) )
{
// May be the args fit into the first packet.
if ( BufferSize <= pRpcMsg->BufferLength )
return;
// Set the partial flag to get the non-pipe args.
// For a partial call with the "extra", the meaning of the size
// arg is the addition required above what we have already.
pRpcMsg->RpcFlags |= (RPC_BUFFER_PARTIAL | RPC_BUFFER_EXTRA);
// We will receive at least BufferSize.
// (buffer location may change)
BufferSize -= pRpcMsg->BufferLength;
Status = I_RpcReceive( pRpcMsg, (unsigned int) BufferSize );
if ( Status != RPC_S_OK )
{
// Note, that for this particular error case, i.e. non-pipe
// data receive failing, we don't want to restore the
// original dispatch buffer into the rpc message.
// In case of an error the buffer coming back here would be 0.
//
RpcRaiseException( Status );
}
NDR_ASSERT( 0 == BufferSize ||
NULL != pRpcMsg->Buffer,
"Rpc runtime returned an invalid buffer.");
// In case this is a new buffer
pStubMsg->Buffer = (uchar*)pRpcMsg->Buffer;
pStubMsg->BufferStart = (uchar*)pRpcMsg->Buffer;
pStubMsg->BufferEnd = pStubMsg->BufferStart + pRpcMsg->BufferLength;
}
}
unsigned char * RPC_ENTRY
NdrServerInitializeNew(
PRPC_MESSAGE pRpcMsg,
PMIDL_STUB_MESSAGE pStubMsg,
PMIDL_STUB_DESC pStubDescriptor
)
/*++
Routine Description :
This routine is called by the server stubs before unmarshalling.
It initializes the stub message fields.
Aruguments :
pStubMsg - pointer to the stub message structure
pStubDescriptor - pointer to the stub descriptor structure
Note.
NdrServerInitializeNew is almost identical to NdrServerInitializePartial.
NdrServerInitializeNew is generated for non-pipes and is backward comp.
NdrServerInitializePartial is generated for routines with pipes args.
--*/
{
NdrServerInitialize( pRpcMsg,
pStubMsg,
pStubDescriptor );
if ( pStubDescriptor->pMallocFreeStruct )
{
MALLOC_FREE_STRUCT *pMFS = pStubDescriptor->pMallocFreeStruct;
NdrpSetRpcSsDefaults(pMFS->pfnAllocate, pMFS->pfnFree);
}
// This exception should be raised after initializing StubMsg.
if ( pStubDescriptor->Version > NDR_VERSION )
{
NDR_ASSERT( 0, "ServerInitializeNew : bad version number" );
RpcRaiseException( RPC_X_WRONG_STUB_VERSION );
}
//
// This is where we initialize fields behind the NT3.5 - NT5.0 field set.
//
#ifdef _CS_CHAR_
if ( NDR_VERSION_6_0 <= pStubDescriptor->Version )
{
pStubMsg->pCSInfo = 0;
}
#endif // _CS_CHAR_
if ( !(pRpcMsg->RpcFlags & RPC_BUFFER_COMPLETE ) )
{
// A non-pipe call with an incomplete buffer.
// This can happen only for non-pipe calls in an interface that
// has some pipe calls.
RPC_STATUS Status;
pRpcMsg->RpcFlags = RPC_BUFFER_EXTRA;
// The size argument is ignored, we will get everything.
Status = I_RpcReceive( pRpcMsg, 0 );
if ( Status != RPC_S_OK )
{
// This is the same behavior (and comment) as in MakeSure..
// routine above for non-pipe data case in a pipe call.
// For this particular error case, i.e. a call to Receive to get
// all (non-pipe) data failing, we don't want to restore the
// original dispatch buffer into the rpc message.
// In case of an error the buffer coming back here would be 0.
//
RpcRaiseException( Status );
}
NDR_ASSERT( 0 == pRpcMsg->BufferLength ||
NULL != pRpcMsg->Buffer,
"Rpc runtime returned an invalid buffer.");
// In case this is a new buffer
pStubMsg->Buffer = (uchar*)pRpcMsg->Buffer;
pStubMsg->BufferStart = (uchar*)pRpcMsg->Buffer;
pStubMsg->BufferEnd = pStubMsg->BufferStart + pRpcMsg->BufferLength;
}
return 0;
}
unsigned char * RPC_ENTRY
NdrServerInitialize(
PRPC_MESSAGE pRpcMsg,
PMIDL_STUB_MESSAGE pStubMsg,
PMIDL_STUB_DESC pStubDescriptor )
/*++
Routine Description :
This routine is called by the server stubs before unmarshalling.
It initializes the stub message fields.
Aruguments :
pStubMsg - pointer to the stub message structure
pStubDescriptor - pointer to the stub descriptor structure
Note :
This is a core server-side initializer, called by everybody.
This routine has to be backward compatible with the old binaries built from
-Os stubs. In particular, it cannot touch StubMsg fields outside of
the NT3.5 - NT5.0 field set, i.e. set of fields present since NT3.5 release.
--*/
{
pStubMsg->IsClient = FALSE;
pStubMsg->pAllocAllNodesContext = 0;
pStubMsg->pPointerQueueState = 0;
pStubMsg->IgnoreEmbeddedPointers = FALSE;
pStubMsg->PointerBufferMark = 0;
pStubMsg->BufferLength = 0;
pStubMsg->StackTop = 0;
pStubMsg->FullPtrXlatTables = 0;
pStubMsg->FullPtrRefId = 0;
pStubMsg->PointerLength = 0;
pStubMsg->fDontCallFreeInst = 0;
pStubMsg->fInDontFree = 0;
pStubMsg->fInOnlyParam = 0;
pStubMsg->fHasReturn = 0;
pStubMsg->fHasExtensions = 0;
pStubMsg->fHasNewCorrDesc = 0;
pStubMsg->UniquePtrCount = 0;
pStubMsg->dwDestContext = MSHCTX_DIFFERENTMACHINE;
pStubMsg->pvDestContext = 0;
pStubMsg->pRpcChannelBuffer = 0;
pStubMsg->pArrayInfo = 0;
pStubMsg->RpcMsg = pRpcMsg;
pStubMsg->Buffer = (uchar*)pRpcMsg->Buffer;
//
// Set BufferStart and BufferEnd before unmarshalling.
// NdrPointerFree uses these values to detect pointers into the
// rpc message buffer.
//
pStubMsg->BufferStart = (uchar*)pRpcMsg->Buffer;
pStubMsg->BufferEnd = pStubMsg->BufferStart + pRpcMsg->BufferLength;
pStubMsg->uFlags = 0;
pStubMsg->pfnAllocate = pStubDescriptor->pfnAllocate;
pStubMsg->pfnFree = pStubDescriptor->pfnFree;
pStubMsg->StubDesc = pStubDescriptor;
pStubMsg->ReuseBuffer = FALSE;
pStubMsg->dwStubPhase = 0;
NdrSetupLowStackMark( pStubMsg );
pStubMsg->pAsyncMsg = 0;
pStubMsg->pCorrInfo = 0;
pStubMsg->pCorrMemory = 0;
pStubMsg->pMemoryList = 0;
NdrRpcSetNDRSlot( pStubMsg );
return(0);
}
void RPC_ENTRY
NdrServerInitializePartial(
PRPC_MESSAGE pRpcMsg,
PMIDL_STUB_MESSAGE pStubMsg,
PMIDL_STUB_DESC pStubDescriptor,
unsigned long RequestedBufferSize )
/*++
Routine Description :
This routine is called by the server stubs for pipes.
It is almost identical to NdrServerInitializeNew, except that
it calls NdrpServerInitialize.
Aruguments :
pStubMsg - pointer to the stub message structure
pStubDescriptor - pointer to the stub descriptor structure
pBuffer - pointer to the beginning of the RPC message buffer
--*/
{
NdrServerInitialize( pRpcMsg,
pStubMsg,
pStubDescriptor );
if ( pStubDescriptor->pMallocFreeStruct )
{
MALLOC_FREE_STRUCT *pMFS = pStubDescriptor->pMallocFreeStruct;
NdrpSetRpcSsDefaults(pMFS->pfnAllocate, pMFS->pfnFree);
}
// This exception should be raised after initializing StubMsg.
if ( pStubDescriptor->Version > NDR_VERSION )
{
NDR_ASSERT( 0, "ServerInitializePartial : bad version number" );
RpcRaiseException( RPC_X_WRONG_STUB_VERSION );
}
//
// This is where we initialize fields behind the NT3.5 - NT5.0 field set.
//
#ifdef _CS_CHAR_
if ( NDR_VERSION_6_0 <= pStubDescriptor->Version )
{
pStubMsg->pCSInfo = 0;
}
#endif _CS_CHAR_
// Last but not least...
MakeSureWeHaveNonPipeArgs( pStubMsg, RequestedBufferSize );
}
unsigned char * RPC_ENTRY
NdrGetBuffer(
PMIDL_STUB_MESSAGE pStubMsg,
unsigned long BufferLength,
RPC_BINDING_HANDLE Handle )
/*++
Routine Description :
Performs an RpcGetBuffer.
Arguments :
pStubMsg - Pointer to stub message structure.
BufferLength - Length of requested rpc message buffer.
Handle - Bound handle.
--*/
{
RPC_STATUS Status;
if ( pStubMsg->IsClient )
pStubMsg->RpcMsg->Handle = pStubMsg->SavedHandle = Handle;
LENGTH_ALIGN(BufferLength, 3);
pStubMsg->RpcMsg->BufferLength = BufferLength;
Status = I_RpcGetBuffer( pStubMsg->RpcMsg );
if ( Status )
{
// For raw rpc, if async, don't call abort later.
if ( pStubMsg->pAsyncMsg )
pStubMsg->pAsyncMsg->Flags.RuntimeCleanedUp = 1;
RpcRaiseException( Status );
}
NDR_ASSERT( 0 == BufferLength ||
NULL != pStubMsg->RpcMsg->Buffer,
"Rpc runtime returned an invalid buffer.");
NDR_ASSERT( ! ((ULONG_PTR)pStubMsg->RpcMsg->Buffer & 0x7),
"marshaling buffer misaligned" );
pStubMsg->Buffer = (uchar *) pStubMsg->RpcMsg->Buffer;
pStubMsg->fBufferValid = TRUE;
return pStubMsg->Buffer;
}
void
EnsureNSLoaded()
/*++
Routine Description :
Guarantee that the RpcNs4 DLL is loaded. Throw exception if unable
to load it.
Will load the RpcNs4 DLL if not already loaded
Arguments :
--*/
{
HINSTANCE DllHandle;
LPSTR EntryName;
if ( NsDllLoaded )
return;
#ifdef DOSWIN32RPC
DllHandle = LoadLibraryA( "RPCNS4" );
#else
DllHandle = LoadLibraryW( L"RPCNS4" );
#endif // DOSWIN32RPC
if ( DllHandle == 0 )
{
RpcRaiseException (RPC_S_INVALID_BINDING);
}
EntryName = "I_RpcNsGetBuffer";
pRpcNsGetBuffer = (RPC_NS_GET_BUFFER_ROUTINE)
GetProcAddress( DllHandle,
EntryName);
if ( pRpcNsGetBuffer == 0 )
{
RpcRaiseException (RPC_S_INVALID_BINDING);
}
EntryName = "I_RpcNsSendReceive";
pRpcNsSendReceive = (RPC_NS_SEND_RECEIVE_ROUTINE)
GetProcAddress( DllHandle,
EntryName);
if ( pRpcNsSendReceive == 0 )
{
RpcRaiseException (RPC_S_INVALID_BINDING);
}
EntryName = "I_RpcNsNegotiateTransferSyntax";
pRpcNsNegotiateTransferSyntax = ( RPC_NS_NEGOTIATETRANSFERSYNTAX_ROUTINE )
GetProcAddress( DllHandle,
EntryName );
if ( pRpcNsNegotiateTransferSyntax == 0 )
{
RpcRaiseException (RPC_S_INVALID_BINDING);
}
NsDllLoaded = 1;
}
unsigned char * RPC_ENTRY
NdrNsGetBuffer( PMIDL_STUB_MESSAGE pStubMsg,
unsigned long BufferLength,
RPC_BINDING_HANDLE Handle )
/*++
Routine Description :
Performs an RpcNsGetBuffer.
Will load the RpcNs4 DLL if not already loaded
Arguments :
pStubMsg - Pointer to stub message structure.
BufferLength - Length of requested rpc message buffer.
Handle - Bound handle
--*/
{
RPC_STATUS Status;
if( pStubMsg->IsClient == TRUE )
pStubMsg->RpcMsg->Handle = pStubMsg->SavedHandle = Handle;
EnsureNSLoaded();
LENGTH_ALIGN(BufferLength, 3);
pStubMsg->RpcMsg->BufferLength = BufferLength;
Status = (*pRpcNsGetBuffer)( pStubMsg->RpcMsg );
if ( Status )
RpcRaiseException( Status );
NDR_ASSERT( ! ((ULONG_PTR)pStubMsg->RpcMsg->Buffer & 0x7),
"marshaling buffer misaligned" );
pStubMsg->Buffer = (uchar *) pStubMsg->RpcMsg->Buffer;
pStubMsg->fBufferValid = TRUE;
return pStubMsg->Buffer;
}
unsigned char * RPC_ENTRY
NdrSendReceive(
PMIDL_STUB_MESSAGE pStubMsg,
uchar * pBufferEnd )
/*++
Routine Description :
Performs an RpcSendRecieve.
This routine is executed for the non-pipe calls only.
It returns a whole marshaling buffer.
Arguments :
pStubMsg - Pointer to stub message structure.
pBufferEnd - End of the rpc message buffer being sent.
Return :
The new message buffer pointer returned from the runtime after the
SendReceive call to the server.
--*/
{
RPC_STATUS Status;
PRPC_MESSAGE pRpcMsg;
pRpcMsg = pStubMsg->RpcMsg;
if ( pRpcMsg->BufferLength <
(uint)(pBufferEnd - (uchar *)pRpcMsg->Buffer))
{
NDR_ASSERT( 0, "NdrSendReceive : buffer overflow" );
RpcRaiseException( RPC_S_INTERNAL_ERROR );
}
pRpcMsg->BufferLength = (ulong)(pBufferEnd - (uchar *)pRpcMsg->Buffer);
pStubMsg->fBufferValid = FALSE;
Status = I_RpcSendReceive( pRpcMsg );
if ( Status )
RpcRaiseException(Status);
NDR_ASSERT( 0 == pRpcMsg->BufferLength ||
NULL != pRpcMsg->Buffer,
"Rpc runtime returned an invalid buffer.");
NDR_ASSERT( ! ((ULONG_PTR)pRpcMsg->Buffer & 0x7),
"marshaling buffer misaligned" );
pStubMsg->Buffer = (uchar*)pRpcMsg->Buffer;
pStubMsg->BufferStart = pStubMsg->Buffer;
pStubMsg->BufferEnd = pStubMsg->Buffer + pRpcMsg->BufferLength;
pStubMsg->fBufferValid = TRUE;
return 0;
}
unsigned char * RPC_ENTRY
NdrNsSendReceive(
PMIDL_STUB_MESSAGE pStubMsg,
uchar * pBufferEnd,
RPC_BINDING_HANDLE * pAutoHandle )
/*++
Routine Description :
Performs an RpcNsSendRecieve for a procedure which uses an auto handle.
Will load the RpcNs4 DLL if not already loaded
Arguments :
pStubMsg - Pointer to stub message structure.
pBufferEnd - End of the rpc message buffer being sent.
pAutoHandle - Pointer to the auto handle used in the call.
Return :
The new message buffer pointer returned from the runtime after the
SendReceive call to the server.
--*/
{
RPC_STATUS Status;
PRPC_MESSAGE pRpcMsg;
EnsureNSLoaded();
pRpcMsg = pStubMsg->RpcMsg;
if ( pRpcMsg->BufferLength <
(uint)(pBufferEnd - (uchar *)pRpcMsg->Buffer) )
{
NDR_ASSERT( 0, "NdrNsSendReceive : buffer overflow" );
RpcRaiseException( RPC_S_INTERNAL_ERROR );
}
pRpcMsg->BufferLength = (ulong)(pBufferEnd - (uchar *)pRpcMsg->Buffer);
pStubMsg->fBufferValid = FALSE;
Status = (*pRpcNsSendReceive)( pRpcMsg, pAutoHandle );
if ( Status )
RpcRaiseException(Status);
pStubMsg->SavedHandle = *pAutoHandle;
pStubMsg->Buffer = (uchar*)pRpcMsg->Buffer;
pStubMsg->BufferStart = pStubMsg->Buffer;
pStubMsg->BufferEnd = pStubMsg->Buffer + pRpcMsg->BufferLength;
pStubMsg->fBufferValid = TRUE;
return pStubMsg->Buffer;
}
void RPC_ENTRY
NdrFreeBuffer(
PMIDL_STUB_MESSAGE pStubMsg )
/*++
Routine Description :
Performs an RpcFreeBuffer.
Arguments :
pStubMsg - pointer to stub message structure
Return :
None.
--*/
{
RPC_STATUS Status;
if ( ! pStubMsg->fBufferValid )
return;
if( ! pStubMsg->RpcMsg->Handle )
return;
Status = I_RpcFreeBuffer( pStubMsg->RpcMsg );
pStubMsg->fBufferValid = FALSE;
if ( Status )
RpcRaiseException(Status);
}
void * RPC_ENTRY
NdrAllocate(
PMIDL_STUB_MESSAGE pStubMsg,
size_t Len )
/*++
Routine Description :
Private allocator. Handles allocate all nodes cases.
Arguments :
pStubMsg - Pointer to stub message structure.
Len - Number of bytes to allocate.
Return :
Valid memory pointer.
--*/
{
void * pMemory;
if ( pStubMsg->pAllocAllNodesContext )
{
//
// We must guarantee 4 byte alignment on NT and MAC.
//
#if defined(__RPC_WIN64__)
ALIGN(pStubMsg->pAllocAllNodesContext->AllocAllNodesMemory,7);
#else
ALIGN(pStubMsg->pAllocAllNodesContext->AllocAllNodesMemory,3);
#endif
// Get the pointer.
pMemory = pStubMsg->pAllocAllNodesContext->AllocAllNodesMemory;
// Increment the block pointer.
pStubMsg->pAllocAllNodesContext->AllocAllNodesMemory += Len;
//
// Check for memory allocs past the end of our allocated buffer.
//
if ( pStubMsg->pAllocAllNodesContext->AllocAllNodesMemoryEnd <
pStubMsg->pAllocAllNodesContext->AllocAllNodesMemory )
{
NDR_ASSERT( pStubMsg->pAllocAllNodesContext->AllocAllNodesMemory <=
pStubMsg->pAllocAllNodesContext->AllocAllNodesMemoryEnd,
"Not enough alloc all nodes memory!" );
RpcRaiseException( RPC_S_INTERNAL_ERROR );
}
return pMemory;
}
else
{
size_t NodeOffset, FullSize;
PNDR_MEMORY_LIST_TAIL_NODE pMemoryList;
// Add linked list node to tail of allocation. Ensure that the tail
// is at a 8 byte alignment so that the same code will work in 64bits.
NodeOffset = Len;
LENGTH_ALIGN(NodeOffset, 7);
FullSize = NodeOffset + sizeof(NDR_MEMORY_LIST_TAIL_NODE);
// prevent arithmetic overflow
if ( FullSize < Len )
RpcRaiseException( RPC_X_BAD_STUB_DATA );
if ( ! (pMemory = (*pStubMsg->pfnAllocate)( FullSize )) )
RpcRaiseException( RPC_S_OUT_OF_MEMORY );
pMemoryList = (PNDR_MEMORY_LIST_TAIL_NODE)((char *)pMemory + NodeOffset);
pMemoryList->Signature = NDR_MEMORY_LIST_SIGNATURE;
pMemoryList->pMemoryHead = pMemory;
pMemoryList->pNextNode = (PNDR_MEMORY_LIST_TAIL_NODE)pStubMsg->pMemoryList;
pStubMsg->pMemoryList = pMemoryList;
return pMemory;
}
}
void
NdrpFreeMemoryList(
MIDL_STUB_MESSAGE * pStubMsg)
/*++
Routine Description :
Freeing the list of memory allocated by NdrAllocate.
Arguments :
pStubMsg - Pointer to stub message structure.
Return :
None.
--*/
{
// if the server memory is corrupted, it's probably better to let it die
while(pStubMsg->pMemoryList)
{
PNDR_MEMORY_LIST_TAIL_NODE pMemoryList =
(PNDR_MEMORY_LIST_TAIL_NODE)pStubMsg->pMemoryList;
if (pMemoryList->Signature != NDR_MEMORY_LIST_SIGNATURE)
{
NDR_ASSERT( 0 , "bad rpc allocated memory signature" );
return;
}
pStubMsg->pMemoryList = pMemoryList->pNextNode;
(*pStubMsg->pfnFree)(pMemoryList->pMemoryHead);
}
}
unsigned char * RPC_ENTRY
NdrServerInitializeUnmarshall (
PMIDL_STUB_MESSAGE pStubMsg,
PMIDL_STUB_DESC pStubDescriptor,
PRPC_MESSAGE pRpcMsg )
/*++
Routine Description :
Old NT Beta2 (build 683) server stub initialization routine. Used for
backward compatability only.
Aruguments :
pStubMsg - Pointer to the stub message structure.
pStubDescriptor - Pointer to the stub descriptor structure.
pBuffer - Pointer to the beginning of the RPC message buffer.
--*/
{
return NdrServerInitialize( pRpcMsg,
pStubMsg,
pStubDescriptor );
}
void RPC_ENTRY
NdrServerInitializeMarshall (
PRPC_MESSAGE pRpcMsg,
PMIDL_STUB_MESSAGE pStubMsg )
/*++
Routine Description :
Old NT Beta2 (build 683) server stub initialization routine. Used for
backward compatability only.
Arguments :
pRpcMsg - Pointer to the RPC message structure.
pStubMsg - Pointer to the stub message structure.
--*/
{
}
//
// Functions to simulate a alloca across a function call.
// Note that this code is optimized for simplicity and speed. It does
// not attempt to search a list on each allocation to reuse partially full
// blocks as much as it could. This gives max speed, but hurts space
// utilization when allocations of significantly different sizes are requested.
//
// This code can easily be optimized more in the future.
#if defined(NDR_PROFILE_ALLOCA)
VOID
NdrpAllocaWriteLog( CHAR *pChar, DWORD Size )
{
HANDLE hMutex = NULL;
HANDLE hLogFile = INVALID_HANDLE_VALUE;
BOOL bHasMutex = FALSE;
RpcTryFinally
{
// Open and acquire the log mutex
hMutex = CreateMutex( NULL, FALSE, "NDR_ALLOCA_LOG_MUTEX");
if ( !hMutex) return;
DWORD dwWaitResult = WaitForSingleObject( hMutex, INFINITE );
if ( WAIT_FAILED == dwWaitResult ) return;
bHasMutex = TRUE;
CHAR LogFile[MAX_PATH];
UINT DirResult =
GetSystemDirectoryA( LogFile, sizeof(LogFile) );
if ( !DirResult) return;
strcat( LogFile, "\\ndralloca.log" );
hLogFile = CreateFileA( LogFile,
GENERIC_WRITE,
FILE_SHARE_READ | FILE_SHARE_WRITE,
NULL,
OPEN_ALWAYS,
FILE_ATTRIBUTE_NORMAL | FILE_FLAG_WRITE_THROUGH,
NULL );
SetFilePointer( hLogFile, 0, NULL, FILE_END );
DWORD dwBytesWritten;
WriteFile( hLogFile, pChar, Size, &dwBytesWritten, NULL );
}
RpcFinally
{
if ( bHasMutex ) ReleaseMutex( hMutex );
if ( NULL != hMutex) CloseHandle( hMutex );
if ( INVALID_HANDLE_VALUE != hLogFile ) CloseHandle( hLogFile );
}
RpcEndFinally
}
VOID
NdrpAllocaDumpStatistics(
PNDR_ALLOCA_CONTEXT pAllocaContext
)
{
// Produce a record suitable for entry into Excel.
CHAR DataBuffer[4048];
CHAR AppName[MAX_PATH];
memset(AppName, 0, sizeof(AppName ) );
GetModuleFileNameA( NULL, AppName, sizeof(AppName ) );
sprintf( DataBuffer, "EXE,%s,PID,0x%X,TID,0x%x,CS,%d,AB,%d,AA,%d,MB,%d,MA,%d\r\n",
AppName,
GetCurrentProcessId(),
GetCurrentThreadId(),
(long)NDR_ALLOCA_PREALLOCED_BLOCK_SIZE,
pAllocaContext->AllocaBytes,
pAllocaContext->AllocaAllocations,
pAllocaContext->MemoryBytes,
pAllocaContext->MemoryAllocations );
NdrpAllocaWriteLog( DataBuffer, strlen( DataBuffer ) );
}
#endif
VOID
NdrpAllocaInit(
PNDR_ALLOCA_CONTEXT pAllocaContext
)
/*++
Routine Description :
Initiaizes the alloca context.
Arguments :
pAllocaContext - Pointer to the Alloca context..
Return :
None.
--*/
{
pAllocaContext->pBlockPointer = pAllocaContext->PreAllocatedBlock;
pAllocaContext->BytesRemaining = NDR_ALLOCA_PREALLOCED_BLOCK_SIZE;
#if defined(NDR_PROFILE_ALLOCA)
pAllocaContext->AllocaBytes = 0;
pAllocaContext->AllocaAllocations = 0;
pAllocaContext->MemoryBytes = 0;
pAllocaContext->MemoryAllocations = 0;
#endif
InitializeListHead( &pAllocaContext->MemoryList );
}
VOID
NdrpAllocaDestroy(
PNDR_ALLOCA_CONTEXT pAllocaContext
)
/*++
Routine Description :
Deinitializes this Alloca context and frees all memory
from the allocation calls that were associated with this context.
Arguments :
pAllocaContext - Pointer to the Alloca context.
Return :
None.
--*/
{
#if defined(NDR_PROFILE_ALLOCA)
NdrpAllocaDumpStatistics( pAllocaContext );
#endif
PLIST_ENTRY pMemoryList = pAllocaContext->MemoryList.Flink;
while( pMemoryList != &pAllocaContext->MemoryList )
{
PLIST_ENTRY pMemoryListNext = pMemoryList->Flink;
I_RpcFree( pMemoryList );
pMemoryList = pMemoryListNext;
}
InitializeListHead( &pAllocaContext->MemoryList );
}
PVOID
NdrpAlloca(
PNDR_ALLOCA_CONTEXT pAllocaContext,
UINT Size
)
/*++
Routine Description :
Allocates memory from the allocation context. If no memory is available
in the cache, more memory is added. If more memory can not be
added, a RPC_S_NO_MEMORY exception is raised.
Arguments :
pAllocaContext - Pointer to the Alloca context.
Size - Size of the memory to allocate.
Return :
Newly allocated memory.
--*/
{
PVOID pReturnedBlock;
LENGTH_ALIGN( Size, 15 );
#if defined(NDR_PROFILE_ALLOCA)
pAllocaContext->AllocaAllocations++;
pAllocaContext->AllocaBytes += Size;
#endif
// Check if the current block has enough memory to handle the request.
if (Size > pAllocaContext->BytesRemaining)
{
// Allocate a new block
ULONG NewBlockSize = max( Size + sizeof(LIST_ENTRY),
NDR_ALLOCA_MIN_BLOCK_SIZE );
#if defined(NDR_PROFILE_ALLOCA)
pAllocaContext->MemoryAllocations++;
pAllocaContext->MemoryBytes += NewBlockSize;
#endif
PBYTE pNewBlock = (PBYTE)I_RpcAllocate( NewBlockSize );
if ( !pNewBlock )
{
RpcRaiseException( RPC_S_OUT_OF_MEMORY );
return NULL; // keep the compiler happy
}
InsertHeadList( &pAllocaContext->MemoryList, (PLIST_ENTRY) pNewBlock);
pAllocaContext->pBlockPointer = pNewBlock + sizeof(LIST_ENTRY);
pAllocaContext->BytesRemaining = NewBlockSize - sizeof(LIST_ENTRY);
}
// alloc memory from an existing block.
pReturnedBlock = pAllocaContext->pBlockPointer;
pAllocaContext->pBlockPointer += Size;
pAllocaContext->BytesRemaining -= Size;
return pReturnedBlock;
}
PVOID
NdrpPrivateAllocate(
PNDR_ALLOCA_CONTEXT pAllocaContext,
UINT Size
)
/*++
Routine Description :
Allocates memory using I_RpcAllocate and adds the memory to the
memory list block. If no memory is available, and RPC_S_OUT_OF_MEMORY exception
is thrown.
Arguments :
pAllocaContext - Pointer to the Alloca context.
Size - Size of the memory to allocate.
Return :
Newly allocated memory.
--*/
{
PBYTE pNewBlock = (PBYTE)NdrpAlloca( pAllocaContext, Size );
if ( !pNewBlock )
{
RpcRaiseException( RPC_S_OUT_OF_MEMORY );
return NULL; // keep the compiler happy
}
return (uchar *)pNewBlock ;
}
void
NdrpPrivateFree(
PNDR_ALLOCA_CONTEXT pAllocaContext,
void *pMemory
)
/*++
Routine Description :
Frees memory allocated with NdrpPrivateAllocate
Arguments :
pAllocaContext - Pointer to the Alloca context.
pMemory - Memory allocated with NdrpPrivateAllocate.
Return :
None.
--*/
{
return;
}
void
NdrpInitUserMarshalCB(
MIDL_STUB_MESSAGE * pStubMsg,
PFORMAT_STRING pFormat,
USER_MARSHAL_CB_TYPE CBType,
USER_MARSHAL_CB * pUserMarshalCB
)
/*++
Routine Description :
Initialize a user marshall callback structure.
Arguments :
pStubMsg - Supplies the stub message for the call.
pFormat - Supplies the format string for the type(FC_USER_MARSHAL).
CBType - Supplies the callback type.
pUserMarshalCB - Pointer to the callback to be initialized.
Return :
None.
--*/
{
pUserMarshalCB->Flags = USER_CALL_CTXT_MASK( pStubMsg->dwDestContext );
if ( USER_MARSHAL_CB_UNMARSHALL == CBType )
{
pUserMarshalCB->Flags |=
(((pStubMsg->RpcMsg->DataRepresentation & (ulong)0x0000FFFF)) << 16 );
}
if ( pStubMsg->pAsyncMsg )
pUserMarshalCB->Flags |= USER_CALL_IS_ASYNC;
if ( pStubMsg->fHasNewCorrDesc )
pUserMarshalCB->Flags |= USER_CALL_NEW_CORRELATION_DESC;
pUserMarshalCB->pStubMsg = pStubMsg;
pUserMarshalCB->pReserve = (pFormat[1] & USER_MARSHAL_IID) ? pFormat + 10
: 0;
pUserMarshalCB->Signature = USER_MARSHAL_CB_SIGNATURE;
pUserMarshalCB->CBType = CBType;
pUserMarshalCB->pFormat = pFormat;
pUserMarshalCB->pTypeFormat = pFormat + 8;
pUserMarshalCB->pTypeFormat = pUserMarshalCB->pTypeFormat +
*(short *)pUserMarshalCB->pTypeFormat;
}
RPC_STATUS
RPC_ENTRY
NdrGetUserMarshalInfo (
IN unsigned long * pFlags,
IN unsigned long InformationLevel,
OUT NDR_USER_MARSHAL_INFO * pMarshalInfo
)
/*++
Routine Description :
The NdrGetUserMarshalInfo function is called by a application provided
wire_marshal or user_marshal helper function to receive extra information
in addition to the pFlags parameter.
Arguments :
pFlags - Supplies the pFlags pointer that rpc passed to the helper function.
InformationLevel - Supplies the desired level of detail to be received. The amount of
information increases as the level increases.
pMarshalInfo - Points to the buffer that is to receive the extra information.
Return :
On sucesss - RPC_S_OK.
--*/
{
MIDL_STUB_MESSAGE *pStubMsg;
USER_MARSHAL_CB * pCBInfo = (USER_MARSHAL_CB *)pFlags;
if ( InformationLevel != 1)
{
return RPC_S_INVALID_ARG;
}
RpcTryExcept
{
if ( USER_MARSHAL_CB_SIGNATURE != pCBInfo->Signature )
{
return RPC_S_INVALID_ARG;
}
MIDL_memset( pMarshalInfo, 0, sizeof(NDR_USER_MARSHAL_INFO) );
}
RpcExcept(1)
{
return RPC_S_INVALID_ARG;
}
RpcEndExcept
pMarshalInfo->InformationLevel = InformationLevel;
pStubMsg = pCBInfo->pStubMsg;
// The buffer pointer and the buffer length only
// make sense if the callback is for marshalling
// and unmarshalling.
if ( USER_MARSHAL_CB_MARSHALL == pCBInfo->CBType ||
USER_MARSHAL_CB_UNMARSHALL == pCBInfo->CBType )
{
char *CurrentBuffer = (char *)pStubMsg->Buffer;
char *BufferStart = (char *)pStubMsg->RpcMsg->Buffer;
unsigned long BufferUsed = (unsigned long)(ULONG_PTR)(CurrentBuffer
- BufferStart);
unsigned long BufferLength = pStubMsg->RpcMsg->BufferLength - BufferUsed;
if ( CurrentBuffer < BufferStart ||
CurrentBuffer > (BufferStart + pStubMsg->RpcMsg->BufferLength ) )
{
return RPC_X_INVALID_BUFFER;
}
pMarshalInfo->Level1.Buffer = pStubMsg->Buffer;
pMarshalInfo->Level1.BufferSize = BufferLength;
}
pMarshalInfo->Level1.pfnAllocate = pStubMsg->pfnAllocate;
pMarshalInfo->Level1.pfnFree = pStubMsg->pfnFree;
pMarshalInfo->Level1.pRpcChannelBuffer = pStubMsg->pRpcChannelBuffer;
pMarshalInfo->Level1.Reserved[0] = (ULONG_PTR)pCBInfo->pFormat;
pMarshalInfo->Level1.Reserved[1] = (ULONG_PTR)pCBInfo->pTypeFormat;
return RPC_S_OK;
}
void RPC_ENTRY
RpcUserFree( HANDLE AsyncHandle, void * pBuffer )
{
PMIDL_STUB_MESSAGE pStubMsg;
RPC_STATUS Status;
PRPC_ASYNC_STATE pHandle = ( PRPC_ASYNC_STATE) AsyncHandle;
// User passes in NULL in sync case.
if ( NULL == pHandle )
{
pStubMsg = (PMIDL_STUB_MESSAGE )I_RpcGetNDRSlot();
Status = S_OK;
}
else
{
Status = NdrValidateBothAndLockAsyncHandle( pHandle);
if ( Status == RPC_S_OK )
{
PNDR_ASYNC_MESSAGE pAsyncMsg = (PNDR_ASYNC_MESSAGE) pHandle->StubInfo;
pStubMsg = &pAsyncMsg->StubMsg;
}
}
// REVIEW: default behavior is not to raise exception?
if ( Status != RPC_S_OK )
{
NDR_ASSERT( 0, "invalid rpc handle" );
return ;
}
// validate the stubmsg.
NDR_ASSERT( pStubMsg, "invalid stub message" );
// We'll call into user's free routine to free the buffer if it's not
// part of dispatch buffer.
// We don't care about allocate_on_stack: it can only happen on top level
// out ref pointer or ref pointer to pointer case, and freeing that is
// very much shooting self on the foot.
if ( (pBuffer < pStubMsg->BufferStart) || (pBuffer > pStubMsg->BufferEnd))
{
pStubMsg->pfnFree( pBuffer );
}
else
return;
}
BOOL
IsWriteAV (
IN struct _EXCEPTION_POINTERS *ExceptionPointers
)
{
EXCEPTION_RECORD *ExceptionRecord;
ExceptionRecord = ExceptionPointers->ExceptionRecord;
if ((ExceptionRecord->ExceptionCode == STATUS_ACCESS_VIOLATION)
&& (ExceptionRecord->ExceptionInformation[0]))
{
return TRUE;
}
else
return FALSE;
}
int RPC_ENTRY
NdrServerUnmarshallExceptionFlag(
IN struct _EXCEPTION_POINTERS *ExceptionPointers
)
{
RPC_STATUS ExceptCode = ExceptionPointers->ExceptionRecord->ExceptionCode;
if ( ( ExceptCode != STATUS_POSSIBLE_DEADLOCK ) &&
( ExceptCode != STATUS_INSTRUCTION_MISALIGNMENT ) &&
( ExceptCode != STATUS_DATATYPE_MISALIGNMENT ) &&
( ExceptCode != STATUS_PRIVILEGED_INSTRUCTION ) &&
( ExceptCode != STATUS_ILLEGAL_INSTRUCTION ) &&
( ExceptCode != STATUS_BREAKPOINT ) &&
( ExceptCode != STATUS_STACK_OVERFLOW ) &&
!IsWriteAV(ExceptionPointers) )
return EXCEPTION_EXECUTE_HANDLER;
else
return EXCEPTION_CONTINUE_SEARCH;
}
// check for overflow when calculating the total size.
#if defined(_X86_)
ULONG MultiplyWithOverflowCheck( ULONG_PTR Count, ULONG_PTR ELemSize )
{
register UINT32 IsOverFlowed = 0;
NDR_CORRUPTION_ASSERT( Count < 0x80000000, "invalid count" );
NDR_CORRUPTION_ASSERT( ELemSize < 0x80000000 , "invalid element size" );
ULONG res = Count * ELemSize;
__asm
{
jno skip;
mov IsOverFlowed, 1;
skip:
}
if ( IsOverFlowed || res > 0x7fffffff )
RpcRaiseException( RPC_X_INVALID_BOUND );
return res;
}
#else // we only have ia64 & amd64 here.
ULONG MultiplyWithOverflowCheck( ULONG_PTR Count, ULONG_PTR ElemSize )
{
NDR_CORRUPTION_ASSERT( Count < 0x80000000, "invalid count" );
NDR_CORRUPTION_ASSERT( ElemSize < 0x80000000 , "invalid element size" );
UINT64 res = (UINT64)Count * ElemSize;
if ( res > 0x7fffffff )
RpcRaiseException( RPC_X_INVALID_BOUND );
return (ULONG) res ;
}
#endif
void
NdrpInitArrayInfo( PMIDL_STUB_MESSAGE pStubMsg, ARRAY_INFO * pArrayInfo )
{
// we cannot use pArrayInfo from stack if we are in pointer queue; also, pPointerQueueState
// could be NULL if we have top level multiD array and pointer queue is on always. We have
// to use stack in that case too.
if ( !NdrIsLowStack(pStubMsg) || (pStubMsg->pPointerQueueState == NULL ) )
{
pStubMsg->pArrayInfo = pArrayInfo;
}
else
{
NDR_POINTER_QUEUE_STATE *pActiveState = pStubMsg->pPointerQueueState;
NDR_ASSERT( pActiveState != NULL, "invaild pointer queue");
if ( pActiveState )
pStubMsg->pArrayInfo = pActiveState->GetArrayInfo();
else
RpcRaiseException( RPC_S_INTERNAL_ERROR );
}
pStubMsg->pArrayInfo->Dimension = 0;
pStubMsg->pArrayInfo->BufferConformanceMark = (unsigned long *)pStubMsg->BufferMark;
pStubMsg->pArrayInfo->BufferVarianceMark = 0;
pStubMsg->pArrayInfo->MaxCountArray = (unsigned long *) pStubMsg->MaxCount;
pStubMsg->pArrayInfo->OffsetArray = (ulong *) UlongToPtr( pStubMsg->Offset );
pStubMsg->pArrayInfo->ActualCountArray = (ulong *) UlongToPtr( pStubMsg->ActualCount );
}