319 lines
9.0 KiB
C
319 lines
9.0 KiB
C
/*
|
|
* COM proxy implementation
|
|
*
|
|
* 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
*
|
|
* TODO: Handle non-i386 architectures
|
|
* Get rid of #if 0'ed code.
|
|
*/
|
|
|
|
#include "windef.h"
|
|
#include "winbase.h"
|
|
#include "winerror.h"
|
|
|
|
#include "wine/obj_base.h"
|
|
#include "wine/obj_channel.h"
|
|
|
|
#include "rpcproxy.h"
|
|
|
|
#include "cpsf.h"
|
|
#include "ndr_misc.h"
|
|
#include "wine/debug.h"
|
|
|
|
WINE_DEFAULT_DEBUG_CHANNEL(ole);
|
|
|
|
struct StublessThunk;
|
|
|
|
/* I don't know what MS's std proxy structure looks like,
|
|
so this probably doesn't match, but that shouldn't matter */
|
|
typedef struct {
|
|
ICOM_VTABLE(IRpcProxyBuffer) *lpVtbl;
|
|
LPVOID *PVtbl;
|
|
DWORD RefCount;
|
|
const MIDL_STUBLESS_PROXY_INFO *stubless;
|
|
const IID* piid;
|
|
LPUNKNOWN pUnkOuter;
|
|
LPPSFACTORYBUFFER pPSFactory;
|
|
LPRPCCHANNELBUFFER pChannel;
|
|
struct StublessThunk *thunks;
|
|
} StdProxyImpl;
|
|
|
|
static ICOM_VTABLE(IRpcProxyBuffer) StdProxy_Vtbl;
|
|
|
|
/* How the Windows stubless proxy thunks work is explained at
|
|
* http://msdn.microsoft.com/library/en-us/dnmsj99/html/com0199.asp,
|
|
* but I'll use a slightly different method, to make life easier */
|
|
|
|
#if defined(__i386__)
|
|
|
|
struct StublessThunk {
|
|
BYTE push WINE_PACKED;
|
|
DWORD index WINE_PACKED;
|
|
BYTE call WINE_PACKED;
|
|
LONG handler WINE_PACKED;
|
|
BYTE ret WINE_PACKED;
|
|
WORD bytes WINE_PACKED;
|
|
BYTE pad[3];
|
|
};
|
|
|
|
/* adjust the stack size since we don't use Windows's method */
|
|
#define STACK_ADJUST sizeof(DWORD)
|
|
|
|
#define FILL_STUBLESS(x,idx,stk) \
|
|
x->push = 0x68; /* pushl [immediate] */ \
|
|
x->index = (idx); \
|
|
x->call = 0xe8; /* call [near] */ \
|
|
x->handler = (char*)ObjectStubless - (char*)&x->ret; \
|
|
x->ret = 0xc2; /* ret [immediate] */ \
|
|
x->bytes = stk; \
|
|
x->pad[0] = 0x8d; /* leal (%esi),%esi */ \
|
|
x->pad[1] = 0x76; \
|
|
x->pad[2] = 0x00;
|
|
|
|
static HRESULT WINAPI ObjectStubless(DWORD index)
|
|
{
|
|
char *args = (char*)(&index + 2);
|
|
LPVOID iface = *(LPVOID*)args;
|
|
|
|
ICOM_THIS_MULTI(StdProxyImpl,PVtbl,iface);
|
|
|
|
PFORMAT_STRING fs = This->stubless->ProcFormatString + This->stubless->FormatStringOffset[index];
|
|
unsigned bytes = *(WORD*)(fs+8) - STACK_ADJUST;
|
|
TRACE("(%p)->(%ld)([%d bytes]) ret=%08lx\n", iface, index, bytes, *(DWORD*)(args+bytes));
|
|
|
|
return RPCRT4_NdrClientCall2(This->stubless->pStubDesc, fs, args);
|
|
}
|
|
|
|
#else /* __i386__ */
|
|
|
|
/* can't do that on this arch */
|
|
struct StublessThunk { int dummy; };
|
|
#define FILL_STUBLESS(x,idx,stk) \
|
|
ERR("stubless proxies are not supported on this architecture\n");
|
|
#define STACK_ADJUST 0
|
|
|
|
#endif /* __i386__ */
|
|
|
|
HRESULT WINAPI StdProxy_Construct(REFIID riid,
|
|
LPUNKNOWN pUnkOuter,
|
|
CInterfaceProxyVtbl *vtbl,
|
|
CInterfaceStubVtbl *svtbl,
|
|
LPPSFACTORYBUFFER pPSFactory,
|
|
LPRPCPROXYBUFFER *ppProxy,
|
|
LPVOID *ppvObj)
|
|
{
|
|
StdProxyImpl *This;
|
|
const MIDL_STUBLESS_PROXY_INFO *stubless = NULL;
|
|
|
|
TRACE("(%p,%p,%p,%p,%p)\n", pUnkOuter, vtbl, pPSFactory, ppProxy, ppvObj);
|
|
|
|
/* I can't find any other way to detect stubless proxies than this hack */
|
|
if (!IsEqualGUID(vtbl->header.piid, riid)) {
|
|
stubless = *((const void **)vtbl)++;
|
|
TRACE("stubless=%p\n", stubless);
|
|
}
|
|
|
|
TRACE("iid=%s\n", debugstr_guid(vtbl->header.piid));
|
|
TRACE("vtbl=%p\n", vtbl->Vtbl);
|
|
|
|
if (!IsEqualGUID(vtbl->header.piid, riid)) {
|
|
ERR("IID mismatch during proxy creation\n");
|
|
return RPC_E_UNEXPECTED;
|
|
}
|
|
|
|
This = HeapAlloc(GetProcessHeap(),HEAP_ZERO_MEMORY,sizeof(StdProxyImpl));
|
|
if (!This) return E_OUTOFMEMORY;
|
|
|
|
if (stubless) {
|
|
unsigned i, count = svtbl->header.DispatchTableCount;
|
|
/* Maybe the original vtbl is just modified directly to point at
|
|
* ObjectStublessClientXXX thunks in real Windows, but I don't like it
|
|
*/
|
|
TRACE("stubless thunks: count=%d\n", count);
|
|
This->thunks = HeapAlloc(GetProcessHeap(),0,sizeof(struct StublessThunk)*count);
|
|
This->PVtbl = HeapAlloc(GetProcessHeap(),0,sizeof(LPVOID)*count);
|
|
for (i=0; i<count; i++) {
|
|
struct StublessThunk *thunk = &This->thunks[i];
|
|
if (vtbl->Vtbl[i] == (LPVOID)-1) {
|
|
PFORMAT_STRING fs = stubless->ProcFormatString + stubless->FormatStringOffset[i];
|
|
unsigned bytes = *(WORD*)(fs+8) - STACK_ADJUST;
|
|
TRACE("method %d: stacksize=%d\n", i, bytes);
|
|
FILL_STUBLESS(thunk, i, bytes)
|
|
This->PVtbl[i] = thunk;
|
|
}
|
|
else {
|
|
memset(thunk, 0, sizeof(struct StublessThunk));
|
|
This->PVtbl[i] = vtbl->Vtbl[i];
|
|
}
|
|
}
|
|
}
|
|
else
|
|
This->PVtbl = vtbl->Vtbl;
|
|
|
|
This->lpVtbl = &StdProxy_Vtbl;
|
|
This->RefCount = 1;
|
|
This->stubless = stubless;
|
|
This->piid = vtbl->header.piid;
|
|
This->pUnkOuter = pUnkOuter;
|
|
This->pPSFactory = pPSFactory;
|
|
This->pChannel = NULL;
|
|
*ppProxy = (LPRPCPROXYBUFFER)&This->lpVtbl;
|
|
*ppvObj = &This->PVtbl;
|
|
IPSFactoryBuffer_AddRef(pPSFactory);
|
|
|
|
return S_OK;
|
|
}
|
|
|
|
static void WINAPI StdProxy_Destruct(LPRPCPROXYBUFFER iface)
|
|
{
|
|
ICOM_THIS_MULTI(StdProxyImpl,lpVtbl,iface);
|
|
|
|
IPSFactoryBuffer_Release(This->pPSFactory);
|
|
if (This->thunks) {
|
|
HeapFree(GetProcessHeap(),0,This->PVtbl);
|
|
HeapFree(GetProcessHeap(),0,This->thunks);
|
|
}
|
|
HeapFree(GetProcessHeap(),0,This);
|
|
}
|
|
|
|
static HRESULT WINAPI StdProxy_QueryInterface(LPRPCPROXYBUFFER iface,
|
|
REFIID riid,
|
|
LPVOID *obj)
|
|
{
|
|
ICOM_THIS_MULTI(StdProxyImpl,lpVtbl,iface);
|
|
TRACE("(%p)->QueryInterface(%s,%p)\n",This,debugstr_guid(riid),obj);
|
|
|
|
if (IsEqualGUID(&IID_IUnknown,riid) ||
|
|
IsEqualGUID(This->piid,riid)) {
|
|
*obj = &This->PVtbl;
|
|
This->RefCount++;
|
|
return S_OK;
|
|
}
|
|
|
|
if (IsEqualGUID(&IID_IRpcProxyBuffer,riid)) {
|
|
*obj = &This->lpVtbl;
|
|
This->RefCount++;
|
|
return S_OK;
|
|
}
|
|
|
|
return E_NOINTERFACE;
|
|
}
|
|
|
|
static ULONG WINAPI StdProxy_AddRef(LPRPCPROXYBUFFER iface)
|
|
{
|
|
ICOM_THIS_MULTI(StdProxyImpl,lpVtbl,iface);
|
|
TRACE("(%p)->AddRef()\n",This);
|
|
|
|
return ++(This->RefCount);
|
|
}
|
|
|
|
static ULONG WINAPI StdProxy_Release(LPRPCPROXYBUFFER iface)
|
|
{
|
|
ICOM_THIS_MULTI(StdProxyImpl,lpVtbl,iface);
|
|
TRACE("(%p)->Release()\n",This);
|
|
|
|
if (!--(This->RefCount)) {
|
|
StdProxy_Destruct((LPRPCPROXYBUFFER)&This->lpVtbl);
|
|
return 0;
|
|
}
|
|
return This->RefCount;
|
|
}
|
|
|
|
static HRESULT WINAPI StdProxy_Connect(LPRPCPROXYBUFFER iface,
|
|
LPRPCCHANNELBUFFER pChannel)
|
|
{
|
|
ICOM_THIS_MULTI(StdProxyImpl,lpVtbl,iface);
|
|
TRACE("(%p)->Connect(%p)\n",This,pChannel);
|
|
|
|
This->pChannel = pChannel;
|
|
return S_OK;
|
|
}
|
|
|
|
static VOID WINAPI StdProxy_Disconnect(LPRPCPROXYBUFFER iface)
|
|
{
|
|
ICOM_THIS_MULTI(StdProxyImpl,lpVtbl,iface);
|
|
TRACE("(%p)->Disconnect()\n",This);
|
|
|
|
This->pChannel = NULL;
|
|
}
|
|
|
|
static ICOM_VTABLE(IRpcProxyBuffer) StdProxy_Vtbl =
|
|
{
|
|
ICOM_MSVTABLE_COMPAT_DummyRTTIVALUE
|
|
StdProxy_QueryInterface,
|
|
StdProxy_AddRef,
|
|
StdProxy_Release,
|
|
StdProxy_Connect,
|
|
StdProxy_Disconnect
|
|
};
|
|
|
|
HRESULT WINAPI StdProxy_GetChannel(LPVOID iface,
|
|
LPRPCCHANNELBUFFER *ppChannel)
|
|
{
|
|
ICOM_THIS_MULTI(StdProxyImpl,PVtbl,iface);
|
|
TRACE("(%p)->GetChannel(%p)\n",This,ppChannel);
|
|
|
|
*ppChannel = This->pChannel;
|
|
return S_OK;
|
|
}
|
|
|
|
HRESULT WINAPI StdProxy_GetIID(LPVOID iface,
|
|
const IID **ppiid)
|
|
{
|
|
ICOM_THIS_MULTI(StdProxyImpl,PVtbl,iface);
|
|
TRACE("(%p)->GetIID(%p)\n",This,ppiid);
|
|
|
|
*ppiid = This->piid;
|
|
return S_OK;
|
|
}
|
|
|
|
HRESULT WINAPI IUnknown_QueryInterface_Proxy(LPUNKNOWN iface,
|
|
REFIID riid,
|
|
LPVOID *ppvObj)
|
|
{
|
|
ICOM_THIS_MULTI(StdProxyImpl,PVtbl,iface);
|
|
TRACE("(%p)->QueryInterface(%s,%p)\n",This,debugstr_guid(riid),ppvObj);
|
|
return IUnknown_QueryInterface(This->pUnkOuter,riid,ppvObj);
|
|
}
|
|
|
|
ULONG WINAPI IUnknown_AddRef_Proxy(LPUNKNOWN iface)
|
|
{
|
|
ICOM_THIS_MULTI(StdProxyImpl,PVtbl,iface);
|
|
TRACE("(%p)->AddRef()\n",This);
|
|
#if 0 /* interface refcounting */
|
|
return ++(This->RefCount);
|
|
#else /* object refcounting */
|
|
return IUnknown_AddRef(This->pUnkOuter);
|
|
#endif
|
|
}
|
|
|
|
ULONG WINAPI IUnknown_Release_Proxy(LPUNKNOWN iface)
|
|
{
|
|
ICOM_THIS_MULTI(StdProxyImpl,PVtbl,iface);
|
|
TRACE("(%p)->Release()\n",This);
|
|
#if 0 /* interface refcounting */
|
|
if (!--(This->RefCount)) {
|
|
StdProxy_Destruct((LPRPCPROXYBUFFER)&This->lpVtbl);
|
|
return 0;
|
|
}
|
|
return This->RefCount;
|
|
#else /* object refcounting */
|
|
return IUnknown_Release(This->pUnkOuter);
|
|
#endif
|
|
}
|
|
|