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wine/dlls/rpcrt4/ndr_ole.c

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/*
* OLE32 callouts, COM interface marshalling
*
* Copyright 2001 Ove Kåven, TransGaming Technologies
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
*
* TODO:
* - fix the wire-protocol to match MS/RPC
* - finish RpcStream_Vtbl
*/
#include <stdarg.h>
#include <stdio.h>
#include <string.h>
#define COBJMACROS
#define NONAMELESSUNION
#define NONAMELESSSTRUCT
#include "windef.h"
#include "winbase.h"
#include "winerror.h"
#include "objbase.h"
#include "ndr_misc.h"
#include "rpcndr.h"
#include "rpcproxy.h"
#include "wine/rpcfc.h"
#include "cpsf.h"
#include "wine/debug.h"
WINE_DEFAULT_DEBUG_CHANNEL(ole);
static HMODULE hOLE;
static HRESULT (WINAPI *COM_GetMarshalSizeMax)(ULONG *,REFIID,LPUNKNOWN,DWORD,LPVOID,DWORD);
static HRESULT (WINAPI *COM_MarshalInterface)(LPSTREAM,REFIID,LPUNKNOWN,DWORD,LPVOID,DWORD);
static HRESULT (WINAPI *COM_UnmarshalInterface)(LPSTREAM,REFIID,LPVOID*);
static HRESULT (WINAPI *COM_ReleaseMarshalData)(LPSTREAM);
static HRESULT (WINAPI *COM_GetClassObject)(REFCLSID,DWORD,COSERVERINFO *,REFIID,LPVOID *);
static HRESULT (WINAPI *COM_GetPSClsid)(REFIID,CLSID *);
static LPVOID (WINAPI *COM_MemAlloc)(ULONG);
static void (WINAPI *COM_MemFree)(LPVOID);
static HMODULE LoadCOM(void)
{
if (hOLE) return hOLE;
hOLE = LoadLibraryA("OLE32.DLL");
if (!hOLE) return 0;
COM_GetMarshalSizeMax = (LPVOID)GetProcAddress(hOLE, "CoGetMarshalSizeMax");
COM_MarshalInterface = (LPVOID)GetProcAddress(hOLE, "CoMarshalInterface");
COM_UnmarshalInterface = (LPVOID)GetProcAddress(hOLE, "CoUnmarshalInterface");
COM_ReleaseMarshalData = (LPVOID)GetProcAddress(hOLE, "CoReleaseMarshalData");
COM_GetClassObject = (LPVOID)GetProcAddress(hOLE, "CoGetClassObject");
COM_GetPSClsid = (LPVOID)GetProcAddress(hOLE, "CoGetPSClsid");
COM_MemAlloc = (LPVOID)GetProcAddress(hOLE, "CoTaskMemAlloc");
COM_MemFree = (LPVOID)GetProcAddress(hOLE, "CoTaskMemFree");
return hOLE;
}
/* CoMarshalInterface/CoUnmarshalInterface works on streams,
* so implement a simple stream on top of the RPC buffer
* (which also implements the MInterfacePointer structure) */
typedef struct RpcStreamImpl
{
const IStreamVtbl *lpVtbl;
LONG RefCount;
PMIDL_STUB_MESSAGE pMsg;
LPDWORD size;
unsigned char *data;
DWORD pos;
} RpcStreamImpl;
static HRESULT WINAPI RpcStream_QueryInterface(LPSTREAM iface,
REFIID riid,
LPVOID *obj)
{
RpcStreamImpl *This = (RpcStreamImpl *)iface;
if (IsEqualGUID(&IID_IUnknown, riid) ||
IsEqualGUID(&IID_ISequentialStream, riid) ||
IsEqualGUID(&IID_IStream, riid)) {
*obj = This;
InterlockedIncrement( &This->RefCount );
return S_OK;
}
return E_NOINTERFACE;
}
static ULONG WINAPI RpcStream_AddRef(LPSTREAM iface)
{
RpcStreamImpl *This = (RpcStreamImpl *)iface;
return InterlockedIncrement( &This->RefCount );
}
static ULONG WINAPI RpcStream_Release(LPSTREAM iface)
{
RpcStreamImpl *This = (RpcStreamImpl *)iface;
ULONG ref = InterlockedDecrement( &This->RefCount );
if (!ref) {
TRACE("size=%d\n", *This->size);
This->pMsg->Buffer = This->data + *This->size;
HeapFree(GetProcessHeap(),0,This);
return 0;
}
return ref;
}
static HRESULT WINAPI RpcStream_Read(LPSTREAM iface,
void *pv,
ULONG cb,
ULONG *pcbRead)
{
RpcStreamImpl *This = (RpcStreamImpl *)iface;
HRESULT hr = S_OK;
if (This->pos + cb > *This->size)
{
cb = *This->size - This->pos;
hr = S_FALSE;
}
if (cb) {
memcpy(pv, This->data + This->pos, cb);
This->pos += cb;
}
if (pcbRead) *pcbRead = cb;
return hr;
}
static HRESULT WINAPI RpcStream_Write(LPSTREAM iface,
const void *pv,
ULONG cb,
ULONG *pcbWritten)
{
RpcStreamImpl *This = (RpcStreamImpl *)iface;
if (This->data + cb > (unsigned char *)This->pMsg->RpcMsg->Buffer + This->pMsg->BufferLength)
return STG_E_MEDIUMFULL;
memcpy(This->data + This->pos, pv, cb);
This->pos += cb;
if (This->pos > *This->size) *This->size = This->pos;
if (pcbWritten) *pcbWritten = cb;
return S_OK;
}
static HRESULT WINAPI RpcStream_Seek(LPSTREAM iface,
LARGE_INTEGER move,
DWORD origin,
ULARGE_INTEGER *newPos)
{
RpcStreamImpl *This = (RpcStreamImpl *)iface;
switch (origin) {
case STREAM_SEEK_SET:
This->pos = move.u.LowPart;
break;
case STREAM_SEEK_CUR:
This->pos = This->pos + move.u.LowPart;
break;
case STREAM_SEEK_END:
This->pos = *This->size + move.u.LowPart;
break;
default:
return STG_E_INVALIDFUNCTION;
}
if (newPos) {
newPos->u.LowPart = This->pos;
newPos->u.HighPart = 0;
}
return S_OK;
}
static HRESULT WINAPI RpcStream_SetSize(LPSTREAM iface,
ULARGE_INTEGER newSize)
{
RpcStreamImpl *This = (RpcStreamImpl *)iface;
*This->size = newSize.u.LowPart;
return S_OK;
}
static const IStreamVtbl RpcStream_Vtbl =
{
RpcStream_QueryInterface,
RpcStream_AddRef,
RpcStream_Release,
RpcStream_Read,
RpcStream_Write,
RpcStream_Seek,
RpcStream_SetSize,
NULL, /* CopyTo */
NULL, /* Commit */
NULL, /* Revert */
NULL, /* LockRegion */
NULL, /* UnlockRegion */
NULL, /* Stat */
NULL /* Clone */
};
static LPSTREAM RpcStream_Create(PMIDL_STUB_MESSAGE pStubMsg, BOOL init)
{
RpcStreamImpl *This;
This = HeapAlloc(GetProcessHeap(),HEAP_ZERO_MEMORY,sizeof(RpcStreamImpl));
if (!This) return NULL;
This->lpVtbl = &RpcStream_Vtbl;
This->RefCount = 1;
This->pMsg = pStubMsg;
This->size = (LPDWORD)pStubMsg->Buffer;
This->data = (unsigned char*)(This->size + 1);
This->pos = 0;
if (init) *This->size = 0;
TRACE("init size=%d\n", *This->size);
return (LPSTREAM)This;
}
static const IID* get_ip_iid(PMIDL_STUB_MESSAGE pStubMsg, unsigned char *pMemory, PFORMAT_STRING pFormat)
{
const IID *riid;
if (!pFormat) return &IID_IUnknown;
TRACE("format=%02x %02x\n", pFormat[0], pFormat[1]);
if (pFormat[0] != RPC_FC_IP) FIXME("format=%d\n", pFormat[0]);
if (pFormat[1] == RPC_FC_CONSTANT_IID) {
riid = (const IID *)&pFormat[2];
} else {
ComputeConformance(pStubMsg, pMemory, pFormat+2, 0);
riid = (const IID *)pStubMsg->MaxCount;
}
if (!riid) riid = &IID_IUnknown;
TRACE("got %s\n", debugstr_guid(riid));
return riid;
}
/***********************************************************************
* NdrInterfacePointerMarshall [RPCRT4.@]
*/
unsigned char * WINAPI NdrInterfacePointerMarshall(PMIDL_STUB_MESSAGE pStubMsg,
unsigned char *pMemory,
PFORMAT_STRING pFormat)
{
const IID *riid = get_ip_iid(pStubMsg, pMemory, pFormat);
LPSTREAM stream;
HRESULT hr;
TRACE("(%p,%p,%p)\n", pStubMsg, pMemory, pFormat);
pStubMsg->MaxCount = 0;
if (!LoadCOM()) return NULL;
if (pStubMsg->Buffer + sizeof(DWORD) <= (unsigned char *)pStubMsg->RpcMsg->Buffer + pStubMsg->BufferLength) {
stream = RpcStream_Create(pStubMsg, TRUE);
if (stream) {
if (pMemory)
hr = COM_MarshalInterface(stream, riid, (LPUNKNOWN)pMemory,
pStubMsg->dwDestContext, pStubMsg->pvDestContext,
MSHLFLAGS_NORMAL);
else
hr = S_OK;
IStream_Release(stream);
if (FAILED(hr))
RpcRaiseException(hr);
}
}
return NULL;
}
/***********************************************************************
* NdrInterfacePointerUnmarshall [RPCRT4.@]
*/
unsigned char * WINAPI NdrInterfacePointerUnmarshall(PMIDL_STUB_MESSAGE pStubMsg,
unsigned char **ppMemory,
PFORMAT_STRING pFormat,
unsigned char fMustAlloc)
{
LPSTREAM stream;
HRESULT hr;
TRACE("(%p,%p,%p,%d)\n", pStubMsg, ppMemory, pFormat, fMustAlloc);
if (!LoadCOM()) return NULL;
*(LPVOID*)ppMemory = NULL;
if (pStubMsg->Buffer + sizeof(DWORD) < (unsigned char *)pStubMsg->RpcMsg->Buffer + pStubMsg->BufferLength) {
stream = RpcStream_Create(pStubMsg, FALSE);
if (!stream) RpcRaiseException(E_OUTOFMEMORY);
if (*((RpcStreamImpl *)stream)->size != 0)
hr = COM_UnmarshalInterface(stream, &IID_NULL, (LPVOID*)ppMemory);
else
hr = S_OK;
IStream_Release(stream);
if (FAILED(hr))
RpcRaiseException(hr);
}
return NULL;
}
/***********************************************************************
* NdrInterfacePointerBufferSize [RPCRT4.@]
*/
void WINAPI NdrInterfacePointerBufferSize(PMIDL_STUB_MESSAGE pStubMsg,
unsigned char *pMemory,
PFORMAT_STRING pFormat)
{
const IID *riid = get_ip_iid(pStubMsg, pMemory, pFormat);
ULONG size = 0;
HRESULT hr;
TRACE("(%p,%p,%p)\n", pStubMsg, pMemory, pFormat);
if (!LoadCOM()) return;
hr = COM_GetMarshalSizeMax(&size, riid, (LPUNKNOWN)pMemory,
pStubMsg->dwDestContext, pStubMsg->pvDestContext,
MSHLFLAGS_NORMAL);
TRACE("size=%d\n", size);
pStubMsg->BufferLength += sizeof(DWORD) + size;
}
/***********************************************************************
* NdrInterfacePointerMemorySize [RPCRT4.@]
*/
ULONG WINAPI NdrInterfacePointerMemorySize(PMIDL_STUB_MESSAGE pStubMsg,
PFORMAT_STRING pFormat)
{
ULONG size;
TRACE("(%p,%p)\n", pStubMsg, pFormat);
size = *(ULONG *)pStubMsg->Buffer;
pStubMsg->Buffer += 4;
pStubMsg->MemorySize += 4;
pStubMsg->Buffer += size;
return pStubMsg->MemorySize;
}
/***********************************************************************
* NdrInterfacePointerFree [RPCRT4.@]
*/
void WINAPI NdrInterfacePointerFree(PMIDL_STUB_MESSAGE pStubMsg,
unsigned char *pMemory,
PFORMAT_STRING pFormat)
{
LPUNKNOWN pUnk = (LPUNKNOWN)pMemory;
TRACE("(%p,%p,%p)\n", pStubMsg, pMemory, pFormat);
if (pUnk) IUnknown_Release(pUnk);
}
/***********************************************************************
* NdrOleAllocate [RPCRT4.@]
*/
void * WINAPI NdrOleAllocate(SIZE_T Size)
{
if (!LoadCOM()) return NULL;
return COM_MemAlloc(Size);
}
/***********************************************************************
* NdrOleFree [RPCRT4.@]
*/
void WINAPI NdrOleFree(void *NodeToFree)
{
if (!LoadCOM()) return;
COM_MemFree(NodeToFree);
}
/***********************************************************************
* Helper function to create a stub.
* This probably looks very much like NdrpCreateStub.
*/
HRESULT create_stub(REFIID iid, IUnknown *pUnk, IRpcStubBuffer **ppstub)
{
CLSID clsid;
IPSFactoryBuffer *psfac;
HRESULT r;
if(!LoadCOM()) return E_FAIL;
r = COM_GetPSClsid( iid, &clsid );
if(FAILED(r)) return r;
r = COM_GetClassObject( &clsid, CLSCTX_INPROC_SERVER, NULL, &IID_IPSFactoryBuffer, (void**)&psfac );
if(FAILED(r)) return r;
r = IPSFactoryBuffer_CreateStub(psfac, iid, pUnk, ppstub);
IPSFactoryBuffer_Release(psfac);
return r;
}
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