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Add VT_UNKNOWN support for VARIANT marshaling by generalising the 

existing VT_DISPATCH code.
This commit is contained in:
Robert Shearman 2005-09-02 11:18:57 +00:00 committed by Alexandre Julliard
parent 611b5acbf8
commit f6daf49061
1 changed files with 38 additions and 20 deletions
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58
dlls/oleaut32/usrmarshal.c
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@ -185,11 +185,26 @@ static unsigned wire_size(VARTYPE vt)
}
}
static unsigned wire_extra(unsigned long *pFlags, VARIANT *pvar)
static unsigned interface_variant_size(unsigned long *pFlags, REFIID riid, VARIANT *pvar)
{
ULONG size;
HRESULT hr;
/* find the buffer size of the marshalled dispatch interface */
hr = CoGetMarshalSizeMax(&size, riid, V_UNKNOWN(pvar), LOWORD(*pFlags), NULL, MSHLFLAGS_NORMAL);
if (FAILED(hr)) {
if (!V_DISPATCH(pvar))
WARN("NULL dispatch pointer\n");
else
ERR("Dispatch variant buffer size calculation failed, HRESULT=0x%lx\n", hr);
return 0;
}
size += sizeof(ULONG); /* we have to store the buffersize in the stream */
TRACE("wire-size extra of dispatch variant is %ld\n", size);
return size;
}
static unsigned wire_extra(unsigned long *pFlags, VARIANT *pvar)
{
if (V_ISARRAY(pvar)) {
FIXME("wire-size safearray\n");
return 0;
@ -206,19 +221,9 @@ static unsigned wire_extra(unsigned long *pFlags, VARIANT *pvar)
case VT_VARIANT | VT_BYREF:
return VARIANT_UserSize(pFlags, 0, V_VARIANTREF(pvar));
case VT_UNKNOWN:
return interface_variant_size(pFlags, &IID_IUnknown, pvar);
case VT_DISPATCH:
/* find the buffer size of the marshalled dispatch interface */
hr = CoGetMarshalSizeMax(&size, &IID_IDispatch, (IUnknown*)V_DISPATCH(pvar), LOWORD(*pFlags), NULL, MSHLFLAGS_NORMAL);
if (FAILED(hr)) {
if (!V_DISPATCH(pvar))
WARN("NULL dispatch pointer\n");
else
ERR("Dispatch variant buffer size calculation failed, HRESULT=0x%lx\n", hr);
return 0;
}
size += sizeof(ULONG); /* we have to store the buffersize in the stream */
TRACE("wire-size extra of dispatch variant is %ld\n", size);
return size;
return interface_variant_size(pFlags, &IID_IDispatch, pvar);
case VT_RECORD:
FIXME("wire-size record\n");
return 0;
@ -228,7 +233,8 @@ static unsigned wire_extra(unsigned long *pFlags, VARIANT *pvar)
}
/* helper: called for VT_DISPATCH variants to marshal the IDispatch* into the buffer. returns Buffer on failure, new position otherwise */
static unsigned char* dispatch_variant_marshal(unsigned long *pFlags, unsigned char *Buffer, VARIANT *pvar) {
static unsigned char* interface_variant_marshal(unsigned long *pFlags, unsigned char *Buffer, REFIID riid, VARIANT *pvar)
{
IStream *working;
HGLOBAL working_mem;
void *working_memlocked;
@ -257,7 +263,7 @@ static unsigned char* dispatch_variant_marshal(unsigned long *pFlags, unsigned c
return oldpos;
}
hr = CoMarshalInterface(working, &IID_IDispatch, (IUnknown*)V_DISPATCH(pvar), LOWORD(*pFlags), NULL, MSHLFLAGS_NORMAL);
hr = CoMarshalInterface(working, riid, V_UNKNOWN(pvar), LOWORD(*pFlags), NULL, MSHLFLAGS_NORMAL);
if (hr != S_OK) {
IStream_Release(working); /* this also releases the hglobal */
return oldpos;
@ -275,8 +281,9 @@ static unsigned char* dispatch_variant_marshal(unsigned long *pFlags, unsigned c
return Buffer + sizeof(ULONG) + size;
}
/* helper: called for VT_DISPATCH variants to unmarshal the buffer back into a dispatch variant. returns Buffer on failure, new position otherwise */
static unsigned char *dispatch_variant_unmarshal(unsigned long *pFlags, unsigned char *Buffer, VARIANT *pvar) {
/* helper: called for VT_DISPATCH / VT_UNKNOWN variants to unmarshal the buffer. returns Buffer on failure, new position otherwise */
static unsigned char *interface_variant_unmarshal(unsigned long *pFlags, unsigned char *Buffer, REFIID riid, VARIANT *pvar)
{
IStream *working;
HGLOBAL working_mem;
void *working_memlocked;
@ -308,7 +315,7 @@ static unsigned char *dispatch_variant_unmarshal(unsigned long *pFlags, unsigned
memcpy(working_memlocked, Buffer, size);
GlobalUnlock(working_mem);
hr = CoUnmarshalInterface(working, &IID_IDispatch, (void**)&V_DISPATCH(pvar));
hr = CoUnmarshalInterface(working, riid, (void**)&V_UNKNOWN(pvar));
if (hr != S_OK) {
IStream_Release(working);
return oldpos;
@ -380,9 +387,13 @@ unsigned char * WINAPI VARIANT_UserMarshal(unsigned long *pFlags, unsigned char
case VT_DISPATCH | VT_BYREF:
FIXME("handle DISPATCH by ref\n");
break;
case VT_UNKNOWN:
/* this should probably call WdtpInterfacePointer_UserMarshal in ole32.dll */
Pos = interface_variant_marshal(pFlags, Pos, &IID_IUnknown, pvar);
break;
case VT_DISPATCH:
/* this should probably call WdtpInterfacePointer_UserMarshal in ole32.dll */
Pos = dispatch_variant_marshal(pFlags, Pos, pvar);
Pos = interface_variant_marshal(pFlags, Pos, &IID_IDispatch, pvar);
break;
case VT_RECORD:
FIXME("handle BRECORD by val\n");
@ -452,8 +463,11 @@ unsigned char * WINAPI VARIANT_UserUnmarshal(unsigned long *pFlags, unsigned cha
case VT_RECORD | VT_BYREF:
FIXME("handle BRECORD by ref\n");
break;
case VT_UNKNOWN:
Pos = interface_variant_unmarshal(pFlags, Pos, &IID_IUnknown, pvar);
break;
case VT_DISPATCH:
Pos = dispatch_variant_unmarshal(pFlags, Pos, pvar);
Pos = interface_variant_unmarshal(pFlags, Pos, &IID_IDispatch, pvar);
break;
case VT_DISPATCH | VT_BYREF:
FIXME("handle DISPATCH by ref\n");
@ -490,6 +504,10 @@ void WINAPI VARIANT_UserFree(unsigned long *pFlags, VARIANT *pvar)
case VT_RECORD | VT_BYREF:
FIXME("handle BRECORD by ref\n");
break;
case VT_UNKNOWN:
case VT_DISPATCH:
IUnknown_Release(V_UNKNOWN(pvar));
break;
default:
FIXME("handle unknown complex type\n");
break;