Sweden-Number/dlls/rpcrt4/cproxy.c

456 lines
14 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
*
* TODO: Handle non-i386 architectures
*/
#include "config.h"
#include "wine/port.h"
#include <stdarg.h>
#define COBJMACROS
#include "windef.h"
#include "winbase.h"
#include "winerror.h"
#include "objbase.h"
#include "rpcproxy.h"
#include "cpsf.h"
#include "ndr_misc.h"
#include "wine/debug.h"
WINE_DEFAULT_DEBUG_CHANNEL(ole);
/* 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 {
const IRpcProxyBufferVtbl *lpVtbl;
LPVOID *PVtbl;
LONG RefCount;
const IID* piid;
LPUNKNOWN pUnkOuter;
PCInterfaceName name;
LPPSFACTORYBUFFER pPSFactory;
LPRPCCHANNELBUFFER pChannel;
} StdProxyImpl;
static const IRpcProxyBufferVtbl StdProxy_Vtbl;
#define ICOM_THIS_MULTI(impl,field,iface) impl* const This=(impl*)((char*)(iface) - offsetof(impl,field))
#if defined(__i386__)
#include "pshpack1.h"
struct thunk {
BYTE push;
DWORD index;
BYTE jmp;
LONG handler;
};
#include "poppack.h"
extern void call_stubless_func(void);
__ASM_GLOBAL_FUNC(call_stubless_func,
"pushl %esp\n\t" /* pointer to index */
"call " __ASM_NAME("ObjectStubless") "\n\t"
"popl %edx\n\t" /* args size */
"movl (%esp),%ecx\n\t" /* return address */
"addl %edx,%esp\n\t"
"jmp *%ecx" );
HRESULT WINAPI ObjectStubless(DWORD *args)
{
DWORD index = args[0];
void **iface = (void **)args[2];
const void **vtbl = (const void **)*iface;
const MIDL_STUBLESS_PROXY_INFO *stubless = *(const MIDL_STUBLESS_PROXY_INFO **)(vtbl - 2);
const PFORMAT_STRING fs = stubless->ProcFormatString + stubless->FormatStringOffset[index];
/* store bytes to remove from stack */
args[0] = *(const WORD*)(fs + 8);
TRACE("(%p)->(%d)([%d bytes]) ret=%08x\n", iface, index, args[0], args[1]);
return NdrClientCall2(stubless->pStubDesc, fs, args + 2);
}
#define BLOCK_SIZE 1024
#define MAX_BLOCKS 64 /* 64k methods should be enough for anybody */
static const struct thunk *method_blocks[MAX_BLOCKS];
static const struct thunk *allocate_block( unsigned int num )
{
unsigned int i;
struct thunk *prev, *block;
block = VirtualAlloc( NULL, BLOCK_SIZE * sizeof(*block),
MEM_COMMIT | MEM_RESERVE, PAGE_EXECUTE_READWRITE );
if (!block) return NULL;
for (i = 0; i < BLOCK_SIZE; i++)
{
block[i].push = 0x68; /* pushl */
block[i].index = BLOCK_SIZE * num + i + 3;
block[i].jmp = 0xe9; /* jmp */
block[i].handler = (char *)call_stubless_func - (char *)(&block[i].handler + 1);
}
VirtualProtect( block, BLOCK_SIZE * sizeof(*block), PAGE_EXECUTE_READ, NULL );
prev = InterlockedCompareExchangePointer( (void **)&method_blocks[num], block, NULL );
if (prev) /* someone beat us to it */
{
VirtualFree( block, 0, MEM_RELEASE );
block = prev;
}
return block;
}
static BOOL fill_stubless_table( IUnknownVtbl *vtbl, DWORD num )
{
const void **entry = (const void **)(vtbl + 1);
DWORD i, j;
for (i = 0; i < (num - 3 + BLOCK_SIZE - 1) / BLOCK_SIZE; i++)
{
const struct thunk *block = method_blocks[i];
if (!block && !(block = allocate_block( i ))) return FALSE;
for (j = 0; j < BLOCK_SIZE && j < num - 3 - i * BLOCK_SIZE; j++, entry++)
if (*entry == (LPVOID)-1) *entry = &block[j];
}
return TRUE;
}
#else /* __i386__ */
static BOOL fill_stubless_table( IUnknownVtbl *vtbl, DWORD num )
{
ERR("stubless proxies are not supported on this architecture\n");
return FALSE;
}
#endif /* __i386__ */
HRESULT StdProxy_Construct(REFIID riid,
LPUNKNOWN pUnkOuter,
const ProxyFileInfo *ProxyInfo,
int Index,
LPPSFACTORYBUFFER pPSFactory,
LPRPCPROXYBUFFER *ppProxy,
LPVOID *ppvObj)
{
StdProxyImpl *This;
PCInterfaceName name = ProxyInfo->pNamesArray[Index];
CInterfaceProxyVtbl *vtbl = ProxyInfo->pProxyVtblList[Index];
TRACE("(%p,%p,%p,%p,%p) %s\n", pUnkOuter, vtbl, pPSFactory, ppProxy, ppvObj, name);
/* TableVersion = 2 means it is the stubless version of CInterfaceProxyVtbl */
if (ProxyInfo->TableVersion > 1) {
ULONG count = ProxyInfo->pStubVtblList[Index]->header.DispatchTableCount;
vtbl = (CInterfaceProxyVtbl *)((const void **)vtbl + 1);
TRACE("stubless vtbl %p: count=%d\n", vtbl->Vtbl, count );
fill_stubless_table( (IUnknownVtbl *)vtbl->Vtbl, count );
}
TRACE("iid=%s vtbl=%p\n", debugstr_guid(vtbl->header.piid), 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 (!pUnkOuter) pUnkOuter = (IUnknown *)This;
This->lpVtbl = &StdProxy_Vtbl;
This->PVtbl = vtbl->Vtbl;
/* one reference for the proxy */
This->RefCount = 1;
This->piid = vtbl->header.piid;
This->pUnkOuter = pUnkOuter;
This->name = name;
This->pPSFactory = pPSFactory;
This->pChannel = NULL;
*ppProxy = (LPRPCPROXYBUFFER)&This->lpVtbl;
*ppvObj = &This->PVtbl;
IUnknown_AddRef((IUnknown *)*ppvObj);
IPSFactoryBuffer_AddRef(pPSFactory);
return S_OK;
}
static void StdProxy_Destruct(LPRPCPROXYBUFFER iface)
{
ICOM_THIS_MULTI(StdProxyImpl,lpVtbl,iface);
if (This->pChannel)
IRpcProxyBuffer_Disconnect(iface);
IPSFactoryBuffer_Release(This->pPSFactory);
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;
InterlockedIncrement(&This->RefCount);
return S_OK;
}
if (IsEqualGUID(&IID_IRpcProxyBuffer,riid)) {
*obj = &This->lpVtbl;
InterlockedIncrement(&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 InterlockedIncrement(&This->RefCount);
}
static ULONG WINAPI StdProxy_Release(LPRPCPROXYBUFFER iface)
{
ULONG refs;
ICOM_THIS_MULTI(StdProxyImpl,lpVtbl,iface);
TRACE("(%p)->Release()\n",This);
refs = InterlockedDecrement(&This->RefCount);
if (!refs)
StdProxy_Destruct((LPRPCPROXYBUFFER)&This->lpVtbl);
return refs;
}
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;
IRpcChannelBuffer_AddRef(pChannel);
return S_OK;
}
static VOID WINAPI StdProxy_Disconnect(LPRPCPROXYBUFFER iface)
{
ICOM_THIS_MULTI(StdProxyImpl,lpVtbl,iface);
TRACE("(%p)->Disconnect()\n",This);
IRpcChannelBuffer_Release(This->pChannel);
This->pChannel = NULL;
}
static const IRpcProxyBufferVtbl StdProxy_Vtbl =
{
StdProxy_QueryInterface,
StdProxy_AddRef,
StdProxy_Release,
StdProxy_Connect,
StdProxy_Disconnect
};
static void StdProxy_GetChannel(LPVOID iface,
LPRPCCHANNELBUFFER *ppChannel)
{
ICOM_THIS_MULTI(StdProxyImpl,PVtbl,iface);
TRACE("(%p)->GetChannel(%p) %s\n",This,ppChannel,This->name);
*ppChannel = This->pChannel;
}
static void StdProxy_GetIID(LPVOID iface,
const IID **ppiid)
{
ICOM_THIS_MULTI(StdProxyImpl,PVtbl,iface);
TRACE("(%p)->GetIID(%p) %s\n",This,ppiid,This->name);
*ppiid = This->piid;
}
HRESULT WINAPI IUnknown_QueryInterface_Proxy(LPUNKNOWN iface,
REFIID riid,
LPVOID *ppvObj)
{
ICOM_THIS_MULTI(StdProxyImpl,PVtbl,iface);
TRACE("(%p)->QueryInterface(%s,%p) %s\n",This,debugstr_guid(riid),ppvObj,This->name);
return IUnknown_QueryInterface(This->pUnkOuter,riid,ppvObj);
}
ULONG WINAPI IUnknown_AddRef_Proxy(LPUNKNOWN iface)
{
ICOM_THIS_MULTI(StdProxyImpl,PVtbl,iface);
TRACE("(%p)->AddRef() %s\n",This,This->name);
return IUnknown_AddRef(This->pUnkOuter);
}
ULONG WINAPI IUnknown_Release_Proxy(LPUNKNOWN iface)
{
ICOM_THIS_MULTI(StdProxyImpl,PVtbl,iface);
TRACE("(%p)->Release() %s\n",This,This->name);
return IUnknown_Release(This->pUnkOuter);
}
/***********************************************************************
* NdrProxyInitialize [RPCRT4.@]
*/
void WINAPI NdrProxyInitialize(void *This,
PRPC_MESSAGE pRpcMsg,
PMIDL_STUB_MESSAGE pStubMsg,
PMIDL_STUB_DESC pStubDescriptor,
unsigned int ProcNum)
{
TRACE("(%p,%p,%p,%p,%d)\n", This, pRpcMsg, pStubMsg, pStubDescriptor, ProcNum);
NdrClientInitializeNew(pRpcMsg, pStubMsg, pStubDescriptor, ProcNum);
StdProxy_GetChannel(This, &pStubMsg->pRpcChannelBuffer);
IRpcChannelBuffer_GetDestCtx(pStubMsg->pRpcChannelBuffer,
&pStubMsg->dwDestContext,
&pStubMsg->pvDestContext);
TRACE("channel=%p\n", pStubMsg->pRpcChannelBuffer);
}
/***********************************************************************
* NdrProxyGetBuffer [RPCRT4.@]
*/
void WINAPI NdrProxyGetBuffer(void *This,
PMIDL_STUB_MESSAGE pStubMsg)
{
HRESULT hr;
const IID *riid = NULL;
TRACE("(%p,%p)\n", This, pStubMsg);
pStubMsg->RpcMsg->BufferLength = pStubMsg->BufferLength;
pStubMsg->dwStubPhase = PROXY_GETBUFFER;
StdProxy_GetIID(This, &riid);
hr = IRpcChannelBuffer_GetBuffer(pStubMsg->pRpcChannelBuffer,
(RPCOLEMESSAGE*)pStubMsg->RpcMsg,
riid);
if (FAILED(hr))
{
RpcRaiseException(hr);
return;
}
pStubMsg->fBufferValid = TRUE;
pStubMsg->BufferStart = pStubMsg->RpcMsg->Buffer;
pStubMsg->BufferEnd = pStubMsg->BufferStart + pStubMsg->BufferLength;
pStubMsg->Buffer = pStubMsg->BufferStart;
pStubMsg->dwStubPhase = PROXY_MARSHAL;
}
/***********************************************************************
* NdrProxySendReceive [RPCRT4.@]
*/
void WINAPI NdrProxySendReceive(void *This,
PMIDL_STUB_MESSAGE pStubMsg)
{
ULONG Status = 0;
HRESULT hr;
TRACE("(%p,%p)\n", This, pStubMsg);
if (!pStubMsg->pRpcChannelBuffer)
{
WARN("Trying to use disconnected proxy %p\n", This);
RpcRaiseException(RPC_E_DISCONNECTED);
}
pStubMsg->dwStubPhase = PROXY_SENDRECEIVE;
/* avoid sending uninitialised parts of the buffer on the wire */
pStubMsg->RpcMsg->BufferLength = pStubMsg->Buffer - (unsigned char *)pStubMsg->RpcMsg->Buffer;
hr = IRpcChannelBuffer_SendReceive(pStubMsg->pRpcChannelBuffer,
(RPCOLEMESSAGE*)pStubMsg->RpcMsg,
&Status);
pStubMsg->dwStubPhase = PROXY_UNMARSHAL;
pStubMsg->BufferLength = pStubMsg->RpcMsg->BufferLength;
pStubMsg->BufferStart = pStubMsg->RpcMsg->Buffer;
pStubMsg->BufferEnd = pStubMsg->BufferStart + pStubMsg->BufferLength;
pStubMsg->Buffer = pStubMsg->BufferStart;
/* raise exception if call failed */
if (hr == RPC_S_CALL_FAILED) RpcRaiseException(*(DWORD*)pStubMsg->Buffer);
else if (FAILED(hr)) RpcRaiseException(hr);
}
/***********************************************************************
* NdrProxyFreeBuffer [RPCRT4.@]
*/
void WINAPI NdrProxyFreeBuffer(void *This,
PMIDL_STUB_MESSAGE pStubMsg)
{
TRACE("(%p,%p)\n", This, pStubMsg);
if (pStubMsg->fBufferValid)
{
IRpcChannelBuffer_FreeBuffer(pStubMsg->pRpcChannelBuffer,
(RPCOLEMESSAGE*)pStubMsg->RpcMsg);
pStubMsg->fBufferValid = TRUE;
}
}
/***********************************************************************
* NdrProxyErrorHandler [RPCRT4.@]
*/
HRESULT WINAPI NdrProxyErrorHandler(DWORD dwExceptionCode)
{
WARN("(0x%08x): a proxy call failed\n", dwExceptionCode);
if (FAILED(dwExceptionCode))
return dwExceptionCode;
else
return HRESULT_FROM_WIN32(dwExceptionCode);
}
HRESULT WINAPI
CreateProxyFromTypeInfo( LPTYPEINFO pTypeInfo, LPUNKNOWN pUnkOuter, REFIID riid,
LPRPCPROXYBUFFER *ppProxy, LPVOID *ppv )
{
typedef INT (WINAPI *MessageBoxA)(HWND,LPCSTR,LPCSTR,UINT);
HMODULE hUser32 = LoadLibraryA("user32");
MessageBoxA pMessageBoxA = (void *)GetProcAddress(hUser32, "MessageBoxA");
FIXME("%p %p %s %p %p\n", pTypeInfo, pUnkOuter, debugstr_guid(riid), ppProxy, ppv);
if (pMessageBoxA)
{
pMessageBoxA(NULL,
"The native implementation of OLEAUT32.DLL cannot be used "
"with Wine's RPCRT4.DLL. Remove OLEAUT32.DLL and try again.\n",
"Wine: Unimplemented CreateProxyFromTypeInfo",
0x10);
ExitProcess(1);
}
return E_NOTIMPL;
}