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737e67b17b
wine/dlls/ole32/marshal.c
Mike Hearn 737e67b17b Propagate apartments through the intermediate threads, make listener 
thread apartment scoped.
2004-12-27 16:59:28 +00:00

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/*
* Marshalling library
*
* 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
*/
#include "config.h"
#include <stdlib.h>
#include <stdarg.h>
#include <stdio.h>
#include <string.h>
#include <assert.h>
#define COBJMACROS
#include "windef.h"
#include "winbase.h"
#include "winuser.h"
#include "objbase.h"
#include "ole2.h"
#include "rpc.h"
#include "winerror.h"
#include "winreg.h"
#include "wtypes.h"
#include "wine/unicode.h"
#include "compobj_private.h"
#include "wine/debug.h"
WINE_DEFAULT_DEBUG_CHANNEL(ole);
extern const CLSID CLSID_DfMarshal;
/* Marshalling just passes a unique identifier to the remote client,
* that makes it possible to find the passed interface again.
*
* So basically we need a set of values that make it unique.
*
* Process Identifier, Object IUnknown ptr, IID
*
* Note that the IUnknown_QI(ob,xiid,&ppv) always returns the SAME ppv value!
*/
inline static HRESULT
get_facbuf_for_iid(REFIID riid,IPSFactoryBuffer **facbuf) {
HRESULT hres;
CLSID pxclsid;
if ((hres = CoGetPSClsid(riid,&pxclsid)))
return hres;
return CoGetClassObject(&pxclsid,CLSCTX_INPROC_SERVER,NULL,&IID_IPSFactoryBuffer,(LPVOID*)facbuf);
}
typedef struct _wine_marshal_data {
DWORD dwDestContext;
DWORD mshlflags;
} wine_marshal_data;
typedef struct _mid2unknown {
wine_marshal_id mid;
LPUNKNOWN pUnk;
} mid2unknown;
typedef struct _mid2stub {
wine_marshal_id mid;
IRpcStubBuffer *stub;
LPUNKNOWN pUnkServer;
BOOL valid;
} mid2stub;
static mid2stub *stubs = NULL;
static int nrofstubs = 0;
static mid2unknown *proxies = NULL;
static int nrofproxies = 0;
void MARSHAL_Invalidate_Stub_From_MID(wine_marshal_id *mid) {
int i;
for (i=0;i<nrofstubs;i++) {
if (!stubs[i].valid) continue;
if (MARSHAL_Compare_Mids(mid,&(stubs[i].mid))) {
stubs[i].valid = FALSE;
IUnknown_Release(stubs[i].pUnkServer);
return;
}
}
return;
}
HRESULT
MARSHAL_Find_Stub_Buffer(wine_marshal_id *mid,IRpcStubBuffer **stub) {
int i;
for (i=0;i<nrofstubs;i++) {
if (!stubs[i].valid) continue;
if (MARSHAL_Compare_Mids(mid,&(stubs[i].mid))) {
*stub = stubs[i].stub;
IUnknown_AddRef((*stub));
return S_OK;
}
}
return E_FAIL;
}
static HRESULT
MARSHAL_Find_Stub(wine_marshal_id *mid,LPUNKNOWN *pUnk) {
int i;
for (i=0;i<nrofstubs;i++) {
if (!stubs[i].valid) continue;
if (MARSHAL_Compare_Mids(mid,&(stubs[i].mid))) {
*pUnk = stubs[i].pUnkServer;
IUnknown_AddRef((*pUnk));
return S_OK;
}
}
return E_FAIL;
}
static HRESULT
MARSHAL_Register_Stub(wine_marshal_id *mid,LPUNKNOWN pUnk,IRpcStubBuffer *stub) {
LPUNKNOWN xPunk;
if (!MARSHAL_Find_Stub(mid,&xPunk)) {
FIXME("Already have entry for (%s/%s)!\n",wine_dbgstr_longlong(mid->oid),debugstr_guid(&(mid->iid)));
return S_OK;
}
if (nrofstubs)
stubs=HeapReAlloc(GetProcessHeap(),0,stubs,sizeof(stubs[0])*(nrofstubs+1));
else
stubs=HeapAlloc(GetProcessHeap(),0,sizeof(stubs[0]));
if (!stubs) return E_OUTOFMEMORY;
stubs[nrofstubs].stub = stub;
stubs[nrofstubs].pUnkServer = pUnk;
memcpy(&(stubs[nrofstubs].mid),mid,sizeof(*mid));
stubs[nrofstubs].valid = TRUE; /* set to false when released by ReleaseMarshalData */
nrofstubs++;
return S_OK;
}
HRESULT
MARSHAL_Disconnect_Proxies() {
int i;
TRACE("Disconnecting %d proxies\n", nrofproxies);
for (i = 0; i < nrofproxies; i++)
IRpcProxyBuffer_Disconnect((IRpcProxyBuffer*)proxies[i].pUnk);
return S_OK;
}
static HRESULT
MARSHAL_Register_Proxy(wine_marshal_id *mid,LPUNKNOWN punk) {
int i;
for (i=0;i<nrofproxies;i++) {
if (MARSHAL_Compare_Mids(mid,&(proxies[i].mid))) {
/* this will happen if the program attempts to marshal two
* objects that implement the same interface */
FIXME("need to use IPIDs, already have mid oxid=%s, oid=%s, iid=%s\n",
wine_dbgstr_longlong(mid->oxid), wine_dbgstr_longlong(mid->oid), debugstr_guid(&mid->iid));
return E_FAIL;
}
}
if (nrofproxies)
proxies = HeapReAlloc(GetProcessHeap(),0,proxies,sizeof(proxies[0])*(nrofproxies+1));
else
proxies = HeapAlloc(GetProcessHeap(),0,sizeof(proxies[0]));
memcpy(&(proxies[nrofproxies].mid),mid,sizeof(*mid));
proxies[nrofproxies].pUnk = punk;
nrofproxies++;
IUnknown_AddRef(punk);
return S_OK;
}
/********************** StdMarshal implementation ****************************/
typedef struct _StdMarshalImpl {
IMarshalVtbl *lpvtbl;
DWORD ref;
IID iid;
DWORD dwDestContext;
LPVOID pvDestContext;
DWORD mshlflags;
} StdMarshalImpl;
static HRESULT WINAPI
StdMarshalImpl_QueryInterface(LPMARSHAL iface,REFIID riid,LPVOID *ppv) {
*ppv = NULL;
if (IsEqualIID(&IID_IUnknown,riid) || IsEqualIID(&IID_IMarshal,riid)) {
*ppv = iface;
IUnknown_AddRef(iface);
return S_OK;
}
FIXME("No interface for %s.\n",debugstr_guid(riid));
return E_NOINTERFACE;
}
static ULONG WINAPI
StdMarshalImpl_AddRef(LPMARSHAL iface) {
StdMarshalImpl *This = (StdMarshalImpl *)iface;
return InterlockedIncrement(&This->ref);
}
static ULONG WINAPI
StdMarshalImpl_Release(LPMARSHAL iface) {
StdMarshalImpl *This = (StdMarshalImpl *)iface;
ULONG ref = InterlockedDecrement(&This->ref);
if (!ref) HeapFree(GetProcessHeap(),0,This);
return ref;
}
static HRESULT WINAPI
StdMarshalImpl_GetUnmarshalClass(
LPMARSHAL iface, REFIID riid, void* pv, DWORD dwDestContext,
void* pvDestContext, DWORD mshlflags, CLSID* pCid
) {
memcpy(pCid,&CLSID_DfMarshal,sizeof(CLSID_DfMarshal));
return S_OK;
}
static HRESULT WINAPI
StdMarshalImpl_GetMarshalSizeMax(
LPMARSHAL iface, REFIID riid, void* pv, DWORD dwDestContext,
void* pvDestContext, DWORD mshlflags, DWORD* pSize
) {
*pSize = sizeof(wine_marshal_id)+sizeof(wine_marshal_data);
return S_OK;
}
static HRESULT WINAPI
StdMarshalImpl_MarshalInterface(
LPMARSHAL iface, IStream *pStm,REFIID riid, void* pv, DWORD dwDestContext,
void* pvDestContext, DWORD mshlflags
) {
wine_marshal_id mid;
wine_marshal_data md;
IUnknown *pUnk;
ULONG res;
HRESULT hres;
IRpcStubBuffer *stub;
IPSFactoryBuffer *psfacbuf;
TRACE("(...,%s,...)\n",debugstr_guid(riid));
start_apartment_listener_thread(); /* just to be sure we have one running. */
IUnknown_QueryInterface((LPUNKNOWN)pv,&IID_IUnknown,(LPVOID*)&pUnk);
mid.oxid = COM_CurrentApt()->oxid;
mid.oid = (DWORD)pUnk; /* FIXME */
IUnknown_Release(pUnk);
memcpy(&mid.iid,riid,sizeof(mid.iid));
md.dwDestContext = dwDestContext;
md.mshlflags = mshlflags;
hres = IStream_Write(pStm,&mid,sizeof(mid),&res);
if (hres) return hres;
hres = IStream_Write(pStm,&md,sizeof(md),&res);
if (hres) return hres;
if (SUCCEEDED(MARSHAL_Find_Stub_Buffer(&mid,&stub))) {
/* Find_Stub_Buffer gives us a ref but we want to keep it, as if we'd created a new one */
TRACE("Found RpcStubBuffer %p\n", stub);
return S_OK;
}
hres = get_facbuf_for_iid(riid,&psfacbuf);
if (hres) return hres;
hres = IPSFactoryBuffer_CreateStub(psfacbuf,riid,pv,&stub);
IPSFactoryBuffer_Release(psfacbuf);
if (hres) {
FIXME("Failed to create a stub for %s\n",debugstr_guid(riid));
return hres;
}
IUnknown_QueryInterface((LPUNKNOWN)pv,riid,(LPVOID*)&pUnk);
MARSHAL_Register_Stub(&mid,pUnk,stub);
IUnknown_Release(pUnk);
return S_OK;
}
static HRESULT WINAPI
StdMarshalImpl_UnmarshalInterface(
LPMARSHAL iface, IStream *pStm, REFIID riid, void **ppv
) {
wine_marshal_id mid;
wine_marshal_data md;
ULONG res;
HRESULT hres;
IPSFactoryBuffer *psfacbuf;
IRpcProxyBuffer *rpcproxy;
IRpcChannelBuffer *chanbuf;
int i;
TRACE("(...,%s,....)\n",debugstr_guid(riid));
hres = IStream_Read(pStm,&mid,sizeof(mid),&res);
if (hres) return hres;
hres = IStream_Read(pStm,&md,sizeof(md),&res);
if (hres) return hres;
for (i=0; i < nrofstubs; i++)
{
if (!stubs[i].valid) continue;
if (MARSHAL_Compare_Mids(&mid, &(stubs[i].mid)))
{
IRpcStubBuffer *stub = NULL;
stub = stubs[i].stub;
res = IRpcStubBuffer_Release(stub);
TRACE("Same apartment marshal for %s, returning original object\n",
debugstr_guid(riid));
stubs[i].valid = FALSE;
IUnknown_QueryInterface(stubs[i].pUnkServer, riid, ppv);
IUnknown_Release(stubs[i].pUnkServer); /* no longer need our reference */
return S_OK;
}
}
if (IsEqualIID(riid, &IID_IUnknown) || IsEqualIID(riid, &IID_NULL)) {
/* should return proxy manager IUnknown object */
FIXME("Special treatment required for IID of %s\n", debugstr_guid(riid));
}
hres = get_facbuf_for_iid(riid,&psfacbuf);
if (hres) return hres;
hres = IPSFactoryBuffer_CreateProxy(psfacbuf,NULL,riid,&rpcproxy,ppv);
if (hres) {
FIXME("Failed to create a proxy for %s\n",debugstr_guid(riid));
return hres;
}
MARSHAL_Register_Proxy(&mid, (LPUNKNOWN) rpcproxy);
hres = PIPE_GetNewPipeBuf(&mid,&chanbuf);
IPSFactoryBuffer_Release(psfacbuf);
if (hres) {
ERR("Failed to get an rpc channel buffer for %s\n",debugstr_guid(riid));
} else {
/* Connect the channel buffer to the proxy and release the no longer
* needed proxy.
* NOTE: The proxy should have taken an extra reference because it also
* aggregates the object, so we can safely release our reference to it. */
IRpcProxyBuffer_Connect(rpcproxy,chanbuf);
IRpcProxyBuffer_Release(rpcproxy);
/* IRpcProxyBuffer takes a reference on the channel buffer and
* we no longer need it, so release it */
IRpcChannelBuffer_Release(chanbuf);
}
return hres;
}
static HRESULT WINAPI
StdMarshalImpl_ReleaseMarshalData(LPMARSHAL iface, IStream *pStm) {
wine_marshal_id mid;
ULONG res;
HRESULT hres;
int i;
hres = IStream_Read(pStm,&mid,sizeof(mid),&res);
if (hres) return hres;
for (i=0; i < nrofstubs; i++)
{
if (!stubs[i].valid) continue;
if (MARSHAL_Compare_Mids(&mid, &(stubs[i].mid)))
{
IRpcStubBuffer *stub = NULL;
stub = stubs[i].stub;
res = IRpcStubBuffer_Release(stub);
stubs[i].valid = FALSE;
TRACE("stub refcount of %p is %ld\n", stub, res);
return S_OK;
}
}
FIXME("Could not map MID to stub??\n");
return E_FAIL;
}
static HRESULT WINAPI
StdMarshalImpl_DisconnectObject(LPMARSHAL iface, DWORD dwReserved) {
FIXME("(), stub!\n");
return S_OK;
}
IMarshalVtbl stdmvtbl = {
StdMarshalImpl_QueryInterface,
StdMarshalImpl_AddRef,
StdMarshalImpl_Release,
StdMarshalImpl_GetUnmarshalClass,
StdMarshalImpl_GetMarshalSizeMax,
StdMarshalImpl_MarshalInterface,
StdMarshalImpl_UnmarshalInterface,
StdMarshalImpl_ReleaseMarshalData,
StdMarshalImpl_DisconnectObject
};
static HRESULT StdMarshalImpl_Construct(REFIID riid, void** ppvObject)
{
StdMarshalImpl * pStdMarshal =
HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(StdMarshalImpl));
if (!pStdMarshal)
return E_OUTOFMEMORY;
pStdMarshal->lpvtbl = &stdmvtbl;
pStdMarshal->ref = 0;
return IMarshal_QueryInterface((IMarshal*)pStdMarshal, riid, ppvObject);
}
/***********************************************************************
* CoGetStandardMarshal [OLE32.@]
*
* Gets or creates a standard marshal object.
*
* PARAMS
* riid [I] Interface identifier of the pUnk object.
* pUnk [I] Optional. Object to get the marshal object for.
* dwDestContext [I] Destination. Used to enable or disable optimizations.
* pvDestContext [I] Reserved. Must be NULL.
* mshlflags [I] Flags affecting the marshaling process.
* ppMarshal [O] Address where marshal object will be stored.
*
* RETURNS
* Success: S_OK.
* Failure: HRESULT code.
*
* NOTES
*
* The function retrieves the IMarshal object associated with an object if
* that object is currently an active stub, otherwise a new marshal object is
* created.
*/
HRESULT WINAPI CoGetStandardMarshal(REFIID riid, IUnknown *pUnk,
DWORD dwDestContext, LPVOID pvDestContext,
DWORD mshlflags, LPMARSHAL *ppMarshal)
{
StdMarshalImpl *dm;
if (pUnk == NULL) {
FIXME("(%s,NULL,%lx,%p,%lx,%p), unimplemented yet.\n",
debugstr_guid(riid),dwDestContext,pvDestContext,mshlflags,ppMarshal
);
return E_FAIL;
}
TRACE("(%s,%p,%lx,%p,%lx,%p)\n",
debugstr_guid(riid),pUnk,dwDestContext,pvDestContext,mshlflags,ppMarshal
);
*ppMarshal = HeapAlloc(GetProcessHeap(),0,sizeof(StdMarshalImpl));
dm = (StdMarshalImpl*) *ppMarshal;
if (!dm) return E_FAIL;
dm->lpvtbl = &stdmvtbl;
dm->ref = 1;
memcpy(&dm->iid,riid,sizeof(dm->iid));
dm->dwDestContext = dwDestContext;
dm->pvDestContext = pvDestContext;
dm->mshlflags = mshlflags;
return S_OK;
}
/***********************************************************************
* get_marshaler [internal]
*
* Retrieves an IMarshal interface for an object.
*/
static HRESULT get_marshaler(REFIID riid, IUnknown *pUnk, DWORD dwDestContext,
void *pvDestContext, DWORD mshlFlags,
LPMARSHAL *pMarshal)
{
HRESULT hr;
if (!pUnk)
return E_POINTER;
hr = IUnknown_QueryInterface(pUnk, &IID_IMarshal, (LPVOID*)pMarshal);
if (hr)
hr = CoGetStandardMarshal(riid, pUnk, dwDestContext, pvDestContext,
mshlFlags, pMarshal);
return hr;
}
/***********************************************************************
* get_unmarshaler_from_stream [internal]
*
* Creates an IMarshal* object according to the data marshaled to the stream.
* The function leaves the stream pointer at the start of the data written
* to the stream by the IMarshal* object.
*/
static HRESULT get_unmarshaler_from_stream(IStream *stream, IMarshal **marshal)
{
HRESULT hr;
ULONG res;
OBJREF objref;
/* read common OBJREF header */
hr = IStream_Read(stream, &objref, FIELD_OFFSET(OBJREF, u_objref), &res);
if (hr || (res != FIELD_OFFSET(OBJREF, u_objref)))
{
ERR("Failed to read common OBJREF header, 0x%08lx\n", hr);
return STG_E_READFAULT;
}
/* sanity check on header */
if (objref.signature != OBJREF_SIGNATURE)
{
ERR("Bad OBJREF signature 0x%08lx\n", objref.signature);
return RPC_E_INVALID_OBJREF;
}
/* FIXME: handler marshaling */
if (objref.flags & OBJREF_STANDARD)
{
TRACE("Using standard unmarshaling\n");
hr = StdMarshalImpl_Construct(&IID_IMarshal, (LPVOID*)marshal);
}
else if (objref.flags & OBJREF_CUSTOM)
{
ULONG custom_header_size = FIELD_OFFSET(OBJREF, u_objref.u_custom.size) -
FIELD_OFFSET(OBJREF, u_objref.u_custom);
TRACE("Using custom unmarshaling\n");
/* read constant sized OR_CUSTOM data from stream */
hr = IStream_Read(stream, &objref.u_objref.u_custom,
custom_header_size, &res);
if (hr || (res != custom_header_size))
{
ERR("Failed to read OR_CUSTOM header, 0x%08lx\n", hr);
return STG_E_READFAULT;
}
/* now create the marshaler specified in the stream */
hr = CoCreateInstance(&objref.u_objref.u_custom.clsid, NULL,
CLSCTX_INPROC_SERVER, &IID_IMarshal,
(LPVOID*)marshal);
}
else
{
FIXME("Invalid or unimplemented marshaling type specified: %lx\n",
objref.flags);
return RPC_E_INVALID_OBJREF;
}
if (hr)
ERR("Failed to create marshal, 0x%08lx\n", hr);
return hr;
}
/***********************************************************************
* CoGetMarshalSizeMax [OLE32.@]
*
* Gets the maximum amount of data that will be needed by a marshal.
*
* PARAMS
* pulSize [O] Address where maximum marshal size will be stored.
* riid [I] Identifier of the interface to marshal.
* pUnk [I] Pointer to the object to marshal.
* dwDestContext [I] Destination. Used to enable or disable optimizations.
* pvDestContext [I] Reserved. Must be NULL.
* mshlFlags [I] Flags that affect the marshaling. See CoMarshalInterface().
*
* RETURNS
* Success: S_OK.
* Failure: HRESULT code.
*
* SEE ALSO
* CoMarshalInterface().
*/
HRESULT WINAPI CoGetMarshalSizeMax(ULONG *pulSize, REFIID riid, IUnknown *pUnk,
DWORD dwDestContext, void *pvDestContext,
DWORD mshlFlags)
{
HRESULT hr;
LPMARSHAL pMarshal;
CLSID marshaler_clsid;
hr = get_marshaler(riid, pUnk, dwDestContext, pvDestContext, mshlFlags, &pMarshal);
if (hr)
return hr;
hr = IMarshal_GetUnmarshalClass(pMarshal, riid, pUnk, dwDestContext,
pvDestContext, mshlFlags, &marshaler_clsid);
if (hr)
{
ERR("IMarshal::GetUnmarshalClass failed, 0x%08lx\n", hr);
IMarshal_Release(pMarshal);
return hr;
}
hr = IMarshal_GetMarshalSizeMax(pMarshal, riid, pUnk, dwDestContext,
pvDestContext, mshlFlags, pulSize);
/* add on the size of the common header */
*pulSize += FIELD_OFFSET(OBJREF, u_objref);
/* if custom marshaling, add on size of custom header */
if (!IsEqualCLSID(&marshaler_clsid, &CLSID_DfMarshal))
*pulSize += FIELD_OFFSET(OBJREF, u_objref.u_custom.size) -
FIELD_OFFSET(OBJREF, u_objref.u_custom);
IMarshal_Release(pMarshal);
return hr;
}
/***********************************************************************
* CoMarshalInterface [OLE32.@]
*
* Marshals an interface into a stream so that the object can then be
* unmarshaled from another COM apartment and used remotely.
*
* PARAMS
* pStream [I] Stream the object will be marshaled into.
* riid [I] Identifier of the interface to marshal.
* pUnk [I] Pointer to the object to marshal.
* dwDestContext [I] Destination. Used to enable or disable optimizations.
* pvDestContext [I] Reserved. Must be NULL.
* mshlFlags [I] Flags that affect the marshaling. See notes.
*
* RETURNS
* Success: S_OK.
* Failure: HRESULT code.
*
* NOTES
*
* The mshlFlags parameter can take one or more of the following flags:
*| MSHLFLAGS_NORMAL - Unmarshal once, releases stub on last proxy release.
*| MSHLFLAGS_TABLESTRONG - Unmarshal many, release when CoReleaseMarshalData() called.
*| MSHLFLAGS_TABLEWEAK - Unmarshal many, releases stub on last proxy release.
*| MSHLFLAGS_NOPING - No automatic garbage collection (and so reduces network traffic).
*
* If a marshaled object is not unmarshaled, then CoReleaseMarshalData() must
* be called in order to release the resources used in the marshaling.
*
* SEE ALSO
* CoUnmarshalInterface(), CoReleaseMarshalData().
*/
HRESULT WINAPI CoMarshalInterface(IStream *pStream, REFIID riid, IUnknown *pUnk,
DWORD dwDestContext, void *pvDestContext,
DWORD mshlFlags)
{
HRESULT hr;
CLSID marshaler_clsid;
OBJREF objref;
IStream * pMarshalStream = NULL;
LPMARSHAL pMarshal;
TRACE("(%p, %s, %p, %lx, %p, %lx)\n", pStream, debugstr_guid(riid), pUnk,
dwDestContext, pvDestContext, mshlFlags);
if (pUnk == NULL)
return E_INVALIDARG;
objref.signature = OBJREF_SIGNATURE;
objref.iid = *riid;
/* get the marshaler for the specified interface */
hr = get_marshaler(riid, pUnk, dwDestContext, pvDestContext, mshlFlags, &pMarshal);
if (hr)
{
ERR("Failed to get marshaller, 0x%08lx\n", hr);
return hr;
}
hr = IMarshal_GetUnmarshalClass(pMarshal, riid, pUnk, dwDestContext,
pvDestContext, mshlFlags, &marshaler_clsid);
if (hr)
{
ERR("IMarshal::GetUnmarshalClass failed, 0x%08lx\n", hr);
goto cleanup;
}
/* FIXME: implement handler marshaling too */
if (IsEqualCLSID(&marshaler_clsid, &CLSID_DfMarshal))
{
TRACE("Using standard marshaling\n");
objref.flags = OBJREF_STANDARD;
pMarshalStream = pStream;
}
else
{
TRACE("Using custom marshaling\n");
objref.flags = OBJREF_CUSTOM;
/* we do custom marshaling into a memory stream so that we know what
* size to write into the OR_CUSTOM header */
hr = CreateStreamOnHGlobal(NULL, TRUE, &pMarshalStream);
if (hr)
{
ERR("CreateStreamOnHGLOBAL failed with 0x%08lx\n", hr);
goto cleanup;
}
}
/* write the common OBJREF header to the stream */
hr = IStream_Write(pStream, &objref, FIELD_OFFSET(OBJREF, u_objref), NULL);
if (hr)
{
ERR("Failed to write OBJREF header to stream, 0x%08lx\n", hr);
goto cleanup;
}
TRACE("Calling IMarshal::MarshalInterace\n");
/* call helper object to do the actual marshaling */
hr = IMarshal_MarshalInterface(pMarshal, pMarshalStream, riid, pUnk, dwDestContext,
pvDestContext, mshlFlags);
if (hr)
{
ERR("Failed to marshal the interface %s, %lx\n", debugstr_guid(riid), hr);
goto cleanup;
}
if (objref.flags & OBJREF_CUSTOM)
{
ULONG custom_header_size = FIELD_OFFSET(OBJREF, u_objref.u_custom.size) -
FIELD_OFFSET(OBJREF, u_objref.u_custom);
HGLOBAL hGlobal;
LPVOID data;
hr = GetHGlobalFromStream(pMarshalStream, &hGlobal);
if (hr)
{
ERR("Couldn't get HGLOBAL from stream\n");
hr = E_UNEXPECTED;
goto cleanup;
}
objref.u_objref.u_custom.cbExtension = 0;
objref.u_objref.u_custom.size = GlobalSize(hGlobal);
/* write constant sized OR_CUSTOM data into stream */
hr = IStream_Write(pStream, &objref.u_objref.u_custom,
custom_header_size, NULL);
if (hr)
{
ERR("Failed to write OR_CUSTOM header to stream with 0x%08lx\n", hr);
goto cleanup;
}
data = GlobalLock(hGlobal);
if (!data)
{
ERR("GlobalLock failed\n");
hr = E_UNEXPECTED;
goto cleanup;
}
/* write custom marshal data */
hr = IStream_Write(pStream, data, objref.u_objref.u_custom.size, NULL);
if (hr)
{
ERR("Failed to write custom marshal data with 0x%08lx\n", hr);
goto cleanup;
}
GlobalUnlock(hGlobal);
}
cleanup:
if (pMarshalStream && (objref.flags & OBJREF_CUSTOM))
IStream_Release(pMarshalStream);
IMarshal_Release(pMarshal);
return hr;
}
/***********************************************************************
* CoUnmarshalInterface [OLE32.@]
*
* Unmarshals an object from a stream by creating a proxy to the remote
* object, if necessary.
*
* PARAMS
*
* pStream [I] Stream containing the marshaled object.
* riid [I] Interface identifier of the object to create a proxy to.
* ppv [O] Address where proxy will be stored.
*
* RETURNS
*
* Success: S_OK.
* Failure: HRESULT code.
*
* SEE ALSO
* CoMarshalInterface().
*/
HRESULT WINAPI CoUnmarshalInterface(IStream *pStream, REFIID riid, LPVOID *ppv)
{
HRESULT hr;
LPMARSHAL pMarshal;
TRACE("(%p, %s, %p)\n", pStream, debugstr_guid(riid), ppv);
hr = get_unmarshaler_from_stream(pStream, &pMarshal);
if (hr != S_OK)
return hr;
/* call the helper object to do the actual unmarshaling */
hr = IMarshal_UnmarshalInterface(pMarshal, pStream, riid, ppv);
if (hr)
ERR("IMarshal::UnmarshalInterface failed, 0x%08lx\n", hr);
IMarshal_Release(pMarshal);
return hr;
}
/***********************************************************************
* CoReleaseMarshalData [OLE32.@]
*
* Releases resources associated with an object that has been marshaled into
* a stream.
*
* PARAMS
*
* pStream [I] The stream that the object has been marshaled into.
*
* RETURNS
* Success: S_OK.
* Failure: HRESULT error code.
*
* NOTES
*
* Call this function to release resources associated with a normal or
* table-weak marshal that will not be unmarshaled, and all table-strong
* marshals when they are no longer needed.
*
* SEE ALSO
* CoMarshalInterface(), CoUnmarshalInterface().
*/
HRESULT WINAPI CoReleaseMarshalData(IStream *pStream)
{
HRESULT hr;
LPMARSHAL pMarshal;
TRACE("(%p)\n", pStream);
hr = get_unmarshaler_from_stream(pStream, &pMarshal);
if (hr != S_OK)
return hr;
/* call the helper object to do the releasing of marshal data */
hr = IMarshal_ReleaseMarshalData(pMarshal, pStream);
if (hr)
ERR("IMarshal::ReleaseMarshalData failed with error 0x%08lx\n", hr);
IMarshal_Release(pMarshal);
return hr;
}
/***********************************************************************
* CoMarshalInterThreadInterfaceInStream [OLE32.@]
*
* Marshal an interface across threads in the same process.
*
* PARAMS
* riid [I] Identifier of the interface to be marshalled.
* pUnk [I] Pointer to IUnknown-derived interface that will be marshalled.
* ppStm [O] Pointer to IStream object that is created and then used to store the marshalled inteface.
*
* RETURNS
* Success: S_OK
* Failure: E_OUTOFMEMORY and other COM error codes
*
* SEE ALSO
* CoMarshalInterface(), CoUnmarshalInterface() and CoGetInterfaceAndReleaseStream()
*/
HRESULT WINAPI CoMarshalInterThreadInterfaceInStream(
REFIID riid, LPUNKNOWN pUnk, LPSTREAM * ppStm)
{
ULARGE_INTEGER xpos;
LARGE_INTEGER seekto;
HRESULT hres;
TRACE("(%s, %p, %p)\n",debugstr_guid(riid), pUnk, ppStm);
hres = CreateStreamOnHGlobal(0, TRUE, ppStm);
if (FAILED(hres)) return hres;
hres = CoMarshalInterface(*ppStm, riid, pUnk, MSHCTX_INPROC, NULL, MSHLFLAGS_NORMAL);
/* FIXME: is this needed? */
memset(&seekto,0,sizeof(seekto));
IStream_Seek(*ppStm,seekto,SEEK_SET,&xpos);
return hres;
}
/***********************************************************************
* CoGetInterfaceAndReleaseStream [OLE32.@]
*
* Unmarshalls an inteface from a stream and then releases the stream.
*
* PARAMS
* pStm [I] Stream that contains the marshalled inteface.
* riid [I] Interface identifier of the object to unmarshall.
* ppv [O] Address of pointer where the requested interface object will be stored.
*
* RETURNS
* Success: S_OK
* Failure: A COM error code
*
* SEE ALSO
* CoMarshalInterThreadInterfaceInStream() and CoUnmarshalInteface()
*/
HRESULT WINAPI CoGetInterfaceAndReleaseStream(LPSTREAM pStm, REFIID riid,
LPVOID *ppv)
{
HRESULT hres;
TRACE("(%p, %s, %p)\n", pStm, debugstr_guid(riid), ppv);
hres = CoUnmarshalInterface(pStm, riid, ppv);
IStream_Release(pStm);
return hres;
}
static HRESULT WINAPI StdMarshalCF_QueryInterface(LPCLASSFACTORY iface,
REFIID riid, LPVOID *ppv)
{
*ppv = NULL;
if (IsEqualIID(riid, &IID_IUnknown) || IsEqualIID(riid, &IID_IClassFactory))
{
*ppv = (LPVOID)iface;
return S_OK;
}
return E_NOINTERFACE;
}
static ULONG WINAPI StdMarshalCF_AddRef(LPCLASSFACTORY iface)
{
return 2; /* non-heap based object */
}
static ULONG WINAPI StdMarshalCF_Release(LPCLASSFACTORY iface)
{
return 1; /* non-heap based object */
}
static HRESULT WINAPI StdMarshalCF_CreateInstance(LPCLASSFACTORY iface,
LPUNKNOWN pUnk, REFIID riid, LPVOID *ppv)
{
if (IsEqualIID(riid,&IID_IMarshal))
return StdMarshalImpl_Construct(riid, ppv);
FIXME("(%s), not supported.\n",debugstr_guid(riid));
return E_NOINTERFACE;
}
static HRESULT WINAPI StdMarshalCF_LockServer(LPCLASSFACTORY iface, BOOL fLock)
{
FIXME("(%d), stub!\n",fLock);
return S_OK;
}
static IClassFactoryVtbl StdMarshalCFVtbl =
{
StdMarshalCF_QueryInterface,
StdMarshalCF_AddRef,
StdMarshalCF_Release,
StdMarshalCF_CreateInstance,
StdMarshalCF_LockServer
};
static IClassFactoryVtbl *StdMarshalCF = &StdMarshalCFVtbl;
HRESULT MARSHAL_GetStandardMarshalCF(LPVOID *ppv)
{
*ppv = &StdMarshalCF;
return S_OK;
}
/***********************************************************************
* CoMarshalHresult [OLE32.@]
*
* Marshals an HRESULT value into a stream.
*
* PARAMS
* pStm [I] Stream that hresult will be marshalled into.
* hresult [I] HRESULT to be marshalled.
*
* RETURNS
* Success: S_OK
* Failure: A COM error code
*
* SEE ALSO
* CoUnmarshalHresult().
*/
HRESULT WINAPI CoMarshalHresult(LPSTREAM pStm, HRESULT hresult)
{
return IStream_Write(pStm, &hresult, sizeof(hresult), NULL);
}
/***********************************************************************
* CoUnmarshalHresult [OLE32.@]
*
* Unmarshals an HRESULT value from a stream.
*
* PARAMS
* pStm [I] Stream that hresult will be unmarshalled from.
* phresult [I] Pointer to HRESULT where the value will be unmarshalled to.
*
* RETURNS
* Success: S_OK
* Failure: A COM error code
*
* SEE ALSO
* CoMarshalHresult().
*/
HRESULT WINAPI CoUnmarshalHresult(LPSTREAM pStm, HRESULT * phresult)
{
return IStream_Read(pStm, phresult, sizeof(*phresult), NULL);
}
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