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Sweden-Number/dlls/ole32/oleproxy.c

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/*
* OLE32 proxy/stub handler
*
* Copyright 2002 Marcus Meissner
*
* 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
/* Documentation on MSDN:
*
* (COM Proxy)
* http://msdn.microsoft.com/library/en-us/com/comext_1q0p.asp
*
* (COM Stub)
* http://msdn.microsoft.com/library/en-us/com/comext_1lia.asp
*
* (Marshal)
* http://msdn.microsoft.com/library/en-us/com/comext_1gfn.asp
*
*/
#include "config.h"
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include "windef.h"
#include "objbase.h"
#include "ole2.h"
#include "rpc.h"
#include "winerror.h"
#include "winreg.h"
#include "wtypes.h"
#include "compobj_private.h"
#include "wine/debug.h"
WINE_DEFAULT_DEBUG_CHANNEL(ole);
const CLSID CLSID_DfMarshal = { 0x0000030b, 0, 0, {0xc0, 0, 0, 0, 0, 0, 0, 0x46} };
const CLSID CLSID_PSFactoryBuffer = { 0x00000320, 0, 0, {0xc0, 0, 0, 0, 0, 0, 0, 0x46} };
/* From: http://msdn.microsoft.com/library/en-us/com/cmi_m_4lda.asp
*
* The first time a client requests a pointer to an interface on a
* particular object, COM loads an IClassFactory stub in the server
* process and uses it to marshal the first pointer back to the
* client. In the client process, COM loads the generic proxy for the
* class factory object and calls its implementation of IMarshal to
* unmarshal that first pointer. COM then creates the first interface
* proxy and hands it a pointer to the RPC channel. Finally, COM returns
* the IClassFactory pointer to the client, which uses it to call
* IClassFactory::CreateInstance, passing it a reference to the interface.
*
* Back in the server process, COM now creates a new instance of the
* object, along with a stub for the requested interface. This stub marshals
* the interface pointer back to the client process, where another object
* proxy is created, this time for the object itself. Also created is a
* proxy for the requested interface, a pointer to which is returned to
* the client. With subsequent calls to other interfaces on the object,
* COM will load the appropriate interface stubs and proxies as needed.
*/
typedef struct _CFStub {
ICOM_VTABLE(IRpcStubBuffer) *lpvtbl;
DWORD ref;
LPUNKNOWN pUnkServer;
} CFStub;
static HRESULT WINAPI
CFStub_QueryInterface(LPRPCSTUBBUFFER iface, REFIID riid, LPVOID *ppv) {
if (IsEqualIID(&IID_IUnknown,riid)||IsEqualIID(&IID_IRpcStubBuffer,riid)) {
*ppv = (LPVOID)iface;
IUnknown_AddRef(iface);
return S_OK;
}
FIXME("(%s), interface not supported.\n",debugstr_guid(riid));
return E_NOINTERFACE;
}
static ULONG WINAPI
CFStub_AddRef(LPRPCSTUBBUFFER iface) {
ICOM_THIS(CFStub,iface);
This->ref++;
return This->ref;
}
static ULONG WINAPI
CFStub_Release(LPRPCSTUBBUFFER iface) {
ICOM_THIS(CFStub,iface);
This->ref--;
if (This->ref)
return This->ref;
HeapFree(GetProcessHeap(),0,This);
return 0;
}
static HRESULT WINAPI
CFStub_Connect(LPRPCSTUBBUFFER iface, IUnknown *pUnkServer) {
ICOM_THIS(CFStub,iface);
This->pUnkServer = pUnkServer;
IUnknown_AddRef(pUnkServer);
return S_OK;
}
static void WINAPI
CFStub_Disconnect(LPRPCSTUBBUFFER iface) {
ICOM_THIS(CFStub,iface);
IUnknown_Release(This->pUnkServer);
This->pUnkServer = NULL;
}
static HRESULT WINAPI
CFStub_Invoke(
LPRPCSTUBBUFFER iface,RPCOLEMESSAGE* msg,IRpcChannelBuffer* chanbuf
) {
ICOM_THIS(CFStub,iface);
HRESULT hres;
if (msg->iMethod == 3) { /* CreateInstance */
IID iid;
IClassFactory *classfac;
IUnknown *ppv;
IStream *pStm;
STATSTG ststg;
ULARGE_INTEGER newpos;
LARGE_INTEGER seekto;
ULONG res;
if (msg->cbBuffer < sizeof(IID)) {
FIXME("Not enough bytes in buffer (%ld instead of %d)?\n",msg->cbBuffer,sizeof(IID));
return E_FAIL;
}
memcpy(&iid,msg->Buffer,sizeof(iid));
TRACE("->CreateInstance(%s)\n",debugstr_guid(&iid));
hres = IUnknown_QueryInterface(This->pUnkServer,&IID_IClassFactory,(LPVOID*)&classfac);
if (hres) {
FIXME("Ole server does not provide a IClassFactory?\n");
return hres;
}
hres = IClassFactory_CreateInstance(classfac,NULL,&iid,(LPVOID*)&ppv);
IClassFactory_Release(classfac);
if (hres) {
msg->cbBuffer = 0;
FIXME("Failed to create an instance of %s\n",debugstr_guid(&iid));
return hres;
}
hres = CreateStreamOnHGlobal(0,TRUE,&pStm);
if (hres) {
FIXME("Failed to create stream on hglobal\n");
return hres;
}
hres = CoMarshalInterface(pStm,&iid,ppv,0,NULL,0);
if (hres) {
FIXME("CoMarshalInterface failed, %lx!\n",hres);
msg->cbBuffer = 0;
return hres;
}
hres = IStream_Stat(pStm,&ststg,0);
if (hres) {
FIXME("Stat failed.\n");
return hres;
}
msg->cbBuffer = ststg.cbSize.s.LowPart;
msg->Buffer = HeapReAlloc(GetProcessHeap(),0,msg->Buffer,ststg.cbSize.s.LowPart);
seekto.s.LowPart = 0;seekto.s.HighPart = 0;
hres = IStream_Seek(pStm,seekto,SEEK_SET,&newpos);
if (hres) {
FIXME("IStream_Seek failed, %lx\n",hres);
return hres;
}
hres = IStream_Read(pStm,msg->Buffer,msg->cbBuffer,&res);
if (hres) {
FIXME("Stream Read failed, %lx\n",hres);
return hres;
}
IStream_Release(pStm);
return S_OK;
}
FIXME("(%p,%p), stub!\n",msg,chanbuf);
FIXME("iMethod is %ld\n",msg->iMethod);
FIXME("cbBuffer is %ld\n",msg->cbBuffer);
return E_FAIL;
}
static LPRPCSTUBBUFFER WINAPI
CFStub_IsIIDSupported(LPRPCSTUBBUFFER iface,REFIID riid) {
FIXME("(%s), stub!\n",debugstr_guid(riid));
return NULL;
}
static ULONG WINAPI
CFStub_CountRefs(LPRPCSTUBBUFFER iface) {
FIXME("(), stub!\n");
return 1;
}
static HRESULT WINAPI
CFStub_DebugServerQueryInterface(LPRPCSTUBBUFFER iface,void** ppv) {
FIXME("(%p), stub!\n",ppv);
return E_FAIL;
}
static void WINAPI
CFStub_DebugServerRelease(LPRPCSTUBBUFFER iface,void *pv) {
FIXME("(%p), stub!\n",pv);
}
static ICOM_VTABLE(IRpcStubBuffer) cfstubvt = {
ICOM_MSVTABLE_COMPAT_DummyRTTIVALUE
CFStub_QueryInterface,
CFStub_AddRef,
CFStub_Release,
CFStub_Connect,
CFStub_Disconnect,
CFStub_Invoke,
CFStub_IsIIDSupported,
CFStub_CountRefs,
CFStub_DebugServerQueryInterface,
CFStub_DebugServerRelease
};
static HRESULT
CFStub_Construct(LPRPCSTUBBUFFER *ppv) {
CFStub *cfstub;
cfstub = HeapAlloc(GetProcessHeap(),HEAP_ZERO_MEMORY,sizeof(CFStub));
if (!cfstub)
return E_OUTOFMEMORY;
*ppv = (LPRPCSTUBBUFFER)cfstub;
cfstub->lpvtbl = &cfstubvt;
cfstub->ref = 1;
return S_OK;
}
/* Since we create proxy buffers and classfactory in a pair, there is
* no need for 2 seperate structs. Just put them in one, but remember
* the refcount.
*/
typedef struct _CFProxy {
ICOM_VTABLE(IClassFactory) *lpvtbl_cf;
ICOM_VTABLE(IRpcProxyBuffer) *lpvtbl_proxy;
DWORD ref;
IRpcChannelBuffer *chanbuf;
} CFProxy;
static HRESULT WINAPI IRpcProxyBufferImpl_QueryInterface(LPRPCPROXYBUFFER iface,REFIID riid,LPVOID *ppv) {
*ppv = NULL;
if (IsEqualIID(riid,&IID_IRpcProxyBuffer)||IsEqualIID(riid,&IID_IUnknown)) {
IRpcProxyBuffer_AddRef(iface);
*ppv = (LPVOID)iface;
return S_OK;
}
FIXME("(%s), no interface.\n",debugstr_guid(riid));
return E_NOINTERFACE;
}
static ULONG WINAPI IRpcProxyBufferImpl_AddRef(LPRPCPROXYBUFFER iface) {
ICOM_THIS_MULTI(CFProxy,lpvtbl_proxy,iface);
return ++(This->ref);
}
static ULONG WINAPI IRpcProxyBufferImpl_Release(LPRPCPROXYBUFFER iface) {
ICOM_THIS_MULTI(CFProxy,lpvtbl_proxy,iface);
if (!--(This->ref)) {
IRpcChannelBuffer_Release(This->chanbuf);This->chanbuf = NULL;
HeapFree(GetProcessHeap(),0,This);
return 0;
}
return This->ref;
}
static HRESULT WINAPI IRpcProxyBufferImpl_Connect(LPRPCPROXYBUFFER iface,IRpcChannelBuffer* pRpcChannelBuffer) {
ICOM_THIS_MULTI(CFProxy,lpvtbl_proxy,iface);
This->chanbuf = pRpcChannelBuffer;
IRpcChannelBuffer_AddRef(This->chanbuf);
return S_OK;
}
static void WINAPI IRpcProxyBufferImpl_Disconnect(LPRPCPROXYBUFFER iface) {
ICOM_THIS_MULTI(CFProxy,lpvtbl_proxy,iface);
if (This->chanbuf) {
IRpcChannelBuffer_Release(This->chanbuf);
This->chanbuf = NULL;
}
}
static HRESULT WINAPI
CFProxy_QueryInterface(LPCLASSFACTORY iface,REFIID riid, LPVOID *ppv) {
*ppv = NULL;
if (IsEqualIID(&IID_IClassFactory,riid) || IsEqualIID(&IID_IUnknown,riid)) {
*ppv = (LPVOID)iface;
IClassFactory_AddRef(iface);
return S_OK;
}
if (IsEqualIID(riid,&IID_IMarshal)) /* just to avoid debugoutput */
return E_NOINTERFACE;
FIXME("Unhandled interface: %s\n",debugstr_guid(riid));
return E_NOINTERFACE;
}
static ULONG WINAPI CFProxy_AddRef(LPCLASSFACTORY iface) {
ICOM_THIS_MULTI(CFProxy,lpvtbl_cf,iface);
This->ref++;
return This->ref;
}
static ULONG WINAPI CFProxy_Release(LPCLASSFACTORY iface) {
ICOM_THIS_MULTI(CFProxy,lpvtbl_cf,iface);
This->ref--;
if (This->ref)
return This->ref;
HeapFree(GetProcessHeap(),0,This);
return 0;
}
static HRESULT WINAPI CFProxy_CreateInstance(
LPCLASSFACTORY iface,
LPUNKNOWN pUnkOuter,/* [in] */
REFIID riid, /* [in] */
LPVOID *ppv /* [out] */
) {
ICOM_THIS_MULTI(CFProxy,lpvtbl_cf,iface);
HRESULT hres;
LPSTREAM pStream;
HGLOBAL hGlobal;
ULONG srstatus;
RPCOLEMESSAGE msg;
TRACE("(%p,%s,%p)\n",pUnkOuter,debugstr_guid(riid),ppv);
/* Send CreateInstance to the remote classfactory.
*
* Data: Only the 'IID'.
*/
msg.iMethod = 3;
msg.cbBuffer = sizeof(*riid);
msg.Buffer = NULL;
hres = IRpcChannelBuffer_GetBuffer(This->chanbuf,&msg,&IID_IClassFactory);
if (hres) {
FIXME("IRpcChannelBuffer_GetBuffer failed with %lx?\n",hres);
return hres;
}
memcpy(msg.Buffer,riid,sizeof(*riid));
hres = IRpcChannelBuffer_SendReceive(This->chanbuf,&msg,&srstatus);
if (hres) {
FIXME("IRpcChannelBuffer_SendReceive failed with %lx?\n",hres);
return hres;
}
if (!msg.cbBuffer) /* interface not found on remote */
return srstatus;
/* We got back: [Marshaled Interface data] */
TRACE("got %ld bytes data.\n",msg.cbBuffer);
hGlobal = GlobalAlloc(GMEM_MOVEABLE|GMEM_NODISCARD|GMEM_SHARE,msg.cbBuffer);
memcpy(GlobalLock(hGlobal),msg.Buffer,msg.cbBuffer);
hres = CreateStreamOnHGlobal(hGlobal,TRUE,&pStream);
if (hres) {
FIXME("CreateStreamOnHGlobal failed with %lx\n",hres);
return hres;
}
hres = CoUnmarshalInterface(
pStream,
riid,
ppv
);
IStream_Release(pStream); /* Does GlobalFree hGlobal too. */
if (hres) {
FIXME("CoMarshalInterface failed, %lx\n",hres);
return hres;
}
return S_OK;
}
static HRESULT WINAPI CFProxy_LockServer(LPCLASSFACTORY iface,BOOL fLock) {
/*ICOM_THIS_MULTI(CFProxy,lpvtbl_cf,iface);*/
FIXME("(%d), stub!\n",fLock);
/* basically: write BOOL, read empty */
return S_OK;
}
static ICOM_VTABLE(IRpcProxyBuffer) pspbvtbl = {
ICOM_MSVTABLE_COMPAT_DummyRTTIVALUE
IRpcProxyBufferImpl_QueryInterface,
IRpcProxyBufferImpl_AddRef,
IRpcProxyBufferImpl_Release,
IRpcProxyBufferImpl_Connect,
IRpcProxyBufferImpl_Disconnect
};
static ICOM_VTABLE(IClassFactory) cfproxyvt = {
ICOM_MSVTABLE_COMPAT_DummyRTTIVALUE
CFProxy_QueryInterface,
CFProxy_AddRef,
CFProxy_Release,
CFProxy_CreateInstance,
CFProxy_LockServer
};
static HRESULT
CFProxy_Construct(LPVOID *ppv,LPVOID *ppProxy) {
CFProxy *cf;
cf = HeapAlloc(GetProcessHeap(),HEAP_ZERO_MEMORY,sizeof(CFProxy));
if (!cf)
return E_OUTOFMEMORY;
cf->lpvtbl_cf = &cfproxyvt;
cf->lpvtbl_proxy = &pspbvtbl;
cf->ref = 2; /* we return 2 references to the object! */
*ppv = &(cf->lpvtbl_cf);
*ppProxy = &(cf->lpvtbl_proxy);
return S_OK;
}
/********************* OLE Proxy/Stub Factory ********************************/
static HRESULT WINAPI
PSFacBuf_QueryInterface(LPPSFACTORYBUFFER iface, REFIID iid, LPVOID *ppv) {
if (IsEqualIID(iid,&IID_IPSFactoryBuffer)||IsEqualIID(iid,&IID_IUnknown)) {
*ppv = (LPVOID)iface;
/* No ref counting, static class */
return S_OK;
}
FIXME("(%s) unknown IID?\n",debugstr_guid(iid));
return E_NOINTERFACE;
}
static ULONG WINAPI PSFacBuf_AddRef(LPPSFACTORYBUFFER iface) { return 2; }
static ULONG WINAPI PSFacBuf_Release(LPPSFACTORYBUFFER iface) { return 1; }
static HRESULT WINAPI
PSFacBuf_CreateProxy(
LPPSFACTORYBUFFER iface, IUnknown* pUnkOuter, REFIID riid,
IRpcProxyBuffer **ppProxy, LPVOID *ppv
) {
if (IsEqualIID(&IID_IClassFactory,riid) ||
IsEqualIID(&IID_IUnknown,riid)
)
return CFProxy_Construct(ppv,(LPVOID*)ppProxy);
FIXME("proxying not implemented for (%s) yet!\n",debugstr_guid(riid));
return E_FAIL;
}
static HRESULT WINAPI
PSFacBuf_CreateStub(
LPPSFACTORYBUFFER iface, REFIID riid,IUnknown *pUnkServer,
IRpcStubBuffer** ppStub
) {
HRESULT hres;
TRACE("(%s,%p,%p)\n",debugstr_guid(riid),pUnkServer,ppStub);
if (IsEqualIID(&IID_IClassFactory,riid) ||
IsEqualIID(&IID_IUnknown,riid)
) {
hres = CFStub_Construct(ppStub);
if (!hres)
IRpcStubBuffer_Connect((*ppStub),pUnkServer);
return hres;
}
FIXME("stubbing not implemented for (%s) yet!\n",debugstr_guid(riid));
return E_FAIL;
}
static ICOM_VTABLE(IPSFactoryBuffer) psfacbufvtbl = {
ICOM_MSVTABLE_COMPAT_DummyRTTIVALUE
PSFacBuf_QueryInterface,
PSFacBuf_AddRef,
PSFacBuf_Release,
PSFacBuf_CreateProxy,
PSFacBuf_CreateStub
};
/* This is the whole PSFactoryBuffer object, just the vtableptr */
static ICOM_VTABLE(IPSFactoryBuffer) *lppsfac = &psfacbufvtbl;
/***********************************************************************
* DllGetClassObject [OLE32.63]
*/
HRESULT WINAPI OLE32_DllGetClassObject(REFCLSID rclsid, REFIID iid,LPVOID *ppv)
{
*ppv = NULL;
if (IsEqualIID(rclsid,&CLSID_PSFactoryBuffer)) {
*ppv = &lppsfac;
/* If we create a ps factory, we might need a stub manager later
* anyway
*/
STUBMGR_Start();
return S_OK;
}
if (IsEqualIID(rclsid,&CLSID_DfMarshal)&&(
IsEqualIID(iid,&IID_IClassFactory) ||
IsEqualIID(iid,&IID_IUnknown)
)
)
return MARSHAL_GetStandardMarshalCF(ppv);
FIXME("\n\tCLSID:\t%s,\n\tIID:\t%s\n",debugstr_guid(rclsid),debugstr_guid(iid));
return CLASS_E_CLASSNOTAVAILABLE;
}
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