cproxy.c File Reference

#include <stdarg.h>
#include "windef.h"
#include "winbase.h"
#include "winerror.h"
#include "objbase.h"
#include "rpcproxy.h"
#include "cpsf.h"
#include "ndr_misc.h"
#include "ndr_stubless.h"
#include "wine/asm.h"
#include "wine/debug.h"

Include dependency graph for cproxy.c:

Go to the source code of this file.

Classes
struct	thunk

Macros
#define	COBJMACROS
#define	BLOCK_SIZE   1024
#define	MAX_BLOCKS   64 /* 64k methods should be enough for anybody */

Functions
	WINE_DEFAULT_DEBUG_CHANNEL (ole)
static StdProxyImpl *	impl_from_IRpcProxyBuffer (IRpcProxyBuffer *iface)
static StdProxyImpl *	impl_from_proxy_obj (void *iface)
static void	init_thunk (struct thunk *thunk, unsigned int index)
static const struct thunk *	allocate_block (unsigned int num)
BOOL	fill_stubless_table (IUnknownVtbl *vtbl, DWORD num)
HRESULT	StdProxy_Construct (REFIID riid, LPUNKNOWN pUnkOuter, const ProxyFileInfo *ProxyInfo, int Index, LPPSFACTORYBUFFER pPSFactory, LPRPCPROXYBUFFER *ppProxy, LPVOID *ppvObj)
HRESULT WINAPI	StdProxy_QueryInterface (IRpcProxyBuffer *iface, REFIID riid, void **obj)
ULONG WINAPI	StdProxy_AddRef (IRpcProxyBuffer *iface)
static ULONG WINAPI	StdProxy_Release (LPRPCPROXYBUFFER iface)
HRESULT WINAPI	StdProxy_Connect (IRpcProxyBuffer *iface, IRpcChannelBuffer *pChannel)
void WINAPI	StdProxy_Disconnect (IRpcProxyBuffer *iface)
static void	StdProxy_GetChannel (LPVOID iface, LPRPCCHANNELBUFFER *ppChannel)
static void	StdProxy_GetIID (LPVOID iface, const IID **ppiid)
HRESULT WINAPI	IUnknown_QueryInterface_Proxy (LPUNKNOWN iface, REFIID riid, LPVOID *ppvObj)
ULONG WINAPI	IUnknown_AddRef_Proxy (LPUNKNOWN iface)
ULONG WINAPI	IUnknown_Release_Proxy (LPUNKNOWN iface)
void WINAPI	NdrProxyInitialize (void *This, PRPC_MESSAGE pRpcMsg, PMIDL_STUB_MESSAGE pStubMsg, PMIDL_STUB_DESC pStubDescriptor, unsigned int ProcNum)
void WINAPI	NdrProxyGetBuffer (void *This, PMIDL_STUB_MESSAGE pStubMsg)
void WINAPI	NdrProxySendReceive (void *This, PMIDL_STUB_MESSAGE pStubMsg)
void WINAPI	NdrProxyFreeBuffer (void *This, PMIDL_STUB_MESSAGE pStubMsg)
HRESULT WINAPI	NdrProxyErrorHandler (DWORD dwExceptionCode)

Variables
static const IRpcProxyBufferVtbl	StdProxy_Vtbl
static const struct thunk *	method_blocks [MAX_BLOCKS]

Macro Definition Documentation

BLOCK_SIZE

#define BLOCK_SIZE   1024

Definition at line 259 of file cproxy.c.

COBJMACROS

#define COBJMACROS

Definition at line 24 of file cproxy.c.

MAX_BLOCKS

#define MAX_BLOCKS   64 /* 64k methods should be enough for anybody */

Definition at line 260 of file cproxy.c.

Function Documentation

allocate_block()

static const struct thunk * allocate_block ( unsigned int  num )

static

Definition at line 264 of file cproxy.c.

{
    unsigned int i;
    struct thunk *prev, *block;
    DWORD oldprot;
 
    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++) init_thunk( &block[i], BLOCK_SIZE * num + i + 3 );
    VirtualProtect( block, BLOCK_SIZE * sizeof(*block), PAGE_EXECUTE_READ, &oldprot );
    prev = InterlockedCompareExchangePointer( (void **)&method_blocks[num], block, NULL );
    if (prev) /* someone beat us to it */
    {
        VirtualFree( block, 0, MEM_RELEASE );
        block = prev;
    }
    return block;
}

Referenced by fill_stubless_table().

fill_stubless_table()

BOOL fill_stubless_table	(	IUnknownVtbl *	vtbl,
		DWORD	num
	)

Definition at line 285 of file cproxy.c.

{
    const void **entry = (const void **)(vtbl + 1);
    DWORD i, j;
 
    if (num - 3 > BLOCK_SIZE * MAX_BLOCKS)
    {
        FIXME( "%u methods not supported\n", num );
        return FALSE;
    }
    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;
}

Referenced by StdProxy_Construct(), and typelib_proxy_init().

impl_from_IRpcProxyBuffer()

static StdProxyImpl * impl_from_IRpcProxyBuffer ( IRpcProxyBuffer *  iface )

inlinestatic

Definition at line 43 of file cproxy.c.

{
    return CONTAINING_RECORD(iface, StdProxyImpl, IRpcProxyBuffer_iface);
}

Referenced by StdProxy_AddRef(), StdProxy_Connect(), StdProxy_Disconnect(), StdProxy_QueryInterface(), and StdProxy_Release().

impl_from_proxy_obj()

static StdProxyImpl * impl_from_proxy_obj ( void *  iface )

inlinestatic

Definition at line 48 of file cproxy.c.

{
    return CONTAINING_RECORD(iface, StdProxyImpl, PVtbl);
}

Referenced by IUnknown_AddRef_Proxy(), IUnknown_QueryInterface_Proxy(), IUnknown_Release_Proxy(), StdProxy_GetChannel(), and StdProxy_GetIID().

init_thunk()

static void init_thunk ( struct thunk *  thunk, unsigned int  index  )

inlinestatic

Definition at line 252 of file cproxy.c.

{
    thunk->index = index;
}

Referenced by allocate_block().

IUnknown_AddRef_Proxy()

ULONG WINAPI IUnknown_AddRef_Proxy

(

LPUNKNOWN

iface

)

Definition at line 478 of file cproxy.c.

{
  StdProxyImpl *This = impl_from_proxy_obj( iface );
  TRACE("(%p)->AddRef() %s\n",This,This->name);
  return IUnknown_AddRef(This->pUnkOuter);
}

Referenced by CINTERFACE_PROXY_VTABLE(), fill_delegated_proxy_table(), and test_NdrDllGetClassObject().

IUnknown_QueryInterface_Proxy()

HRESULT WINAPI IUnknown_QueryInterface_Proxy	(	LPUNKNOWN	iface,
		REFIID	riid,
		LPVOID *	ppvObj
	)

Definition at line 469 of file cproxy.c.

{
  StdProxyImpl *This = impl_from_proxy_obj( iface );
  TRACE("(%p)->QueryInterface(%s,%p) %s\n",This,debugstr_guid(riid),ppvObj,This->name);
  return IUnknown_QueryInterface(This->pUnkOuter,riid,ppvObj);
}

Referenced by CINTERFACE_PROXY_VTABLE(), fill_delegated_proxy_table(), and test_NdrDllGetClassObject().

IUnknown_Release_Proxy()

ULONG WINAPI IUnknown_Release_Proxy

(

LPUNKNOWN

iface

)

Definition at line 485 of file cproxy.c.

{
  StdProxyImpl *This = impl_from_proxy_obj( iface );
  TRACE("(%p)->Release() %s\n",This,This->name);
  return IUnknown_Release(This->pUnkOuter);
}

Referenced by CINTERFACE_PROXY_VTABLE(), fill_delegated_proxy_table(), and test_NdrDllGetClassObject().

NdrProxyErrorHandler()

HRESULT WINAPI NdrProxyErrorHandler

(

DWORD

dwExceptionCode

)

Definition at line 593 of file cproxy.c.

{
  WARN("(0x%08x): a proxy call failed\n", dwExceptionCode);
 
  if (FAILED(dwExceptionCode))
    return dwExceptionCode;
  else
    return HRESULT_FROM_WIN32(dwExceptionCode);
}

Referenced by ndr_client_call().

NdrProxyFreeBuffer()

void WINAPI NdrProxyFreeBuffer	(	void *	This,
		PMIDL_STUB_MESSAGE	pStubMsg
	)

Definition at line 577 of file cproxy.c.

{
  TRACE("(%p,%p)\n", This, pStubMsg);
 
  if (pStubMsg->fBufferValid)
  {
    IRpcChannelBuffer_FreeBuffer(pStubMsg->pRpcChannelBuffer,
                                 (RPCOLEMESSAGE*)pStubMsg->RpcMsg);
    pStubMsg->fBufferValid = TRUE;
  }
}

Referenced by ndr_client_call_finally().

NdrProxyGetBuffer()

void WINAPI NdrProxyGetBuffer	(	void *	This,
		PMIDL_STUB_MESSAGE	pStubMsg
	)

Definition at line 515 of file cproxy.c.

{
  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;
}

Referenced by do_ndr_client_call().

NdrProxyInitialize()

void WINAPI NdrProxyInitialize	(	void *	This,
		PRPC_MESSAGE	pRpcMsg,
		PMIDL_STUB_MESSAGE	pStubMsg,
		PMIDL_STUB_DESC	pStubDescriptor,
		unsigned int	ProcNum
	)

Definition at line 495 of file cproxy.c.

{
  TRACE("(%p,%p,%p,%p,%d)\n", This, pRpcMsg, pStubMsg, pStubDescriptor, ProcNum);
  NdrClientInitializeNew(pRpcMsg, pStubMsg, pStubDescriptor, ProcNum);
  StdProxy_GetChannel(This, &pStubMsg->pRpcChannelBuffer);
  if (!pStubMsg->pRpcChannelBuffer)
    RpcRaiseException(CO_E_OBJNOTCONNECTED);
  IRpcChannelBuffer_GetDestCtx(pStubMsg->pRpcChannelBuffer,
                               &pStubMsg->dwDestContext,
                               &pStubMsg->pvDestContext);
  TRACE("channel=%p\n", pStubMsg->pRpcChannelBuffer);
}

Referenced by do_ndr_client_call().

NdrProxySendReceive()

void WINAPI NdrProxySendReceive	(	void *	This,
		PMIDL_STUB_MESSAGE	pStubMsg
	)

Definition at line 543 of file cproxy.c.

{
  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);
}

Referenced by do_ndr_client_call().

StdProxy_AddRef()

ULONG WINAPI StdProxy_AddRef

(

IRpcProxyBuffer *

iface

)

Definition at line 390 of file cproxy.c.

{
  StdProxyImpl *This = impl_from_IRpcProxyBuffer(iface);
  TRACE("(%p)->AddRef()\n",This);
 
  return InterlockedIncrement(&This->RefCount);
}

StdProxy_Connect()

HRESULT WINAPI StdProxy_Connect	(	IRpcProxyBuffer *	iface,
		IRpcChannelBuffer *	pChannel
	)

Definition at line 420 of file cproxy.c.

{
  StdProxyImpl *This = impl_from_IRpcProxyBuffer(iface);
  TRACE("(%p)->Connect(%p)\n",This,pChannel);
 
  This->pChannel = pChannel;
  IRpcChannelBuffer_AddRef(pChannel);
  if (This->base_proxy) IRpcProxyBuffer_Connect( This->base_proxy, pChannel );
  return S_OK;
}

StdProxy_Construct()

HRESULT StdProxy_Construct	(	REFIID	riid,
		LPUNKNOWN	pUnkOuter,
		const ProxyFileInfo *	ProxyInfo,
		int	Index,
		LPPSFACTORYBUFFER	pPSFactory,
		LPRPCPROXYBUFFER *	ppProxy,
		LPVOID *	ppvObj
	)

Definition at line 305 of file cproxy.c.

{
  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 );
  }
 
  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->IRpcProxyBuffer_iface.lpVtbl = &StdProxy_Vtbl;
  This->PVtbl = vtbl->Vtbl;
  /* one reference for the proxy */
  This->RefCount = 1;
  This->piid = vtbl->header.piid;
  This->base_object = NULL;
  This->base_proxy = NULL;
  This->pUnkOuter = pUnkOuter;
  This->name = name;
  This->pPSFactory = pPSFactory;
  This->pChannel = NULL;
 
  if(ProxyInfo->pDelegatedIIDs && ProxyInfo->pDelegatedIIDs[Index])
  {
      HRESULT r = create_proxy( ProxyInfo->pDelegatedIIDs[Index], NULL,
                                &This->base_proxy, (void **)&This->base_object );
      if (FAILED(r))
      {
          HeapFree( GetProcessHeap(), 0, This );
          return r;
      }
  }
 
  *ppProxy = &This->IRpcProxyBuffer_iface;
  *ppvObj = &This->PVtbl;
  IUnknown_AddRef((IUnknown *)*ppvObj);
  IPSFactoryBuffer_AddRef(pPSFactory);
 
  TRACE( "iid=%s this %p proxy %p obj %p vtbl %p base proxy %p base obj %p\n",
         debugstr_guid(riid), This, *ppProxy, *ppvObj, This->PVtbl, This->base_proxy, This->base_object );
  return S_OK;
}

Referenced by CStdPSFactory_CreateProxy().

StdProxy_Disconnect()

void WINAPI StdProxy_Disconnect

(

IRpcProxyBuffer *

iface

)

Definition at line 431 of file cproxy.c.

{
  StdProxyImpl *This = impl_from_IRpcProxyBuffer(iface);
  TRACE("(%p)->Disconnect()\n",This);
 
  if (This->base_proxy) IRpcProxyBuffer_Disconnect( This->base_proxy );
 
  IRpcChannelBuffer_Release(This->pChannel);
  This->pChannel = NULL;
}

StdProxy_GetChannel()

static void StdProxy_GetChannel ( LPVOID  iface, LPRPCCHANNELBUFFER *  ppChannel  )

static

Definition at line 451 of file cproxy.c.

{
  StdProxyImpl *This = impl_from_proxy_obj( iface );
  TRACE("(%p)->GetChannel(%p) %s\n",This,ppChannel,This->name);
 
  *ppChannel = This->pChannel;
}

Referenced by NdrProxyInitialize().

StdProxy_GetIID()

static void StdProxy_GetIID ( LPVOID  iface, const IID **  ppiid  )

static

Definition at line 460 of file cproxy.c.

{
  StdProxyImpl *This = impl_from_proxy_obj( iface );
  TRACE("(%p)->GetIID(%p) %s\n",This,ppiid,This->name);
 
  *ppiid = This->piid;
}

Referenced by NdrProxyGetBuffer().

StdProxy_QueryInterface()

HRESULT WINAPI StdProxy_QueryInterface	(	IRpcProxyBuffer *	iface,
		REFIID	riid,
		void **	obj
	)

Definition at line 369 of file cproxy.c.

{
  StdProxyImpl *This = impl_from_IRpcProxyBuffer(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->IRpcProxyBuffer_iface;
    InterlockedIncrement(&This->RefCount);
    return S_OK;
  }
 
  return E_NOINTERFACE;
}

StdProxy_Release()

static ULONG WINAPI StdProxy_Release ( LPRPCPROXYBUFFER  iface )

static

Definition at line 398 of file cproxy.c.

{
  ULONG refs;
  StdProxyImpl *This = impl_from_IRpcProxyBuffer(iface);
  TRACE("(%p)->Release()\n",This);
 
  refs = InterlockedDecrement(&This->RefCount);
  if (!refs)
  {
    if (This->pChannel)
      IRpcProxyBuffer_Disconnect(&This->IRpcProxyBuffer_iface);
 
    if (This->base_object) IUnknown_Release( This->base_object );
    if (This->base_proxy) IRpcProxyBuffer_Release( This->base_proxy );
 
    IPSFactoryBuffer_Release(This->pPSFactory);
    HeapFree(GetProcessHeap(),0,This);
  }
 
  return refs;
}

WINE_DEFAULT_DEBUG_CHANNEL()

WINE_DEFAULT_DEBUG_CHANNEL

(

ole

)

Variable Documentation

method_blocks

const struct thunk* method_blocks[MAX_BLOCKS]

static

Definition at line 262 of file cproxy.c.

Referenced by allocate_block(), and fill_stubless_table().

StdProxy_Vtbl

static const IRpcProxyBufferVtbl StdProxy_Vtbl

static

Initial value:

=
{
  StdProxy_QueryInterface,
  StdProxy_AddRef,
  StdProxy_Release,
  StdProxy_Connect,
  StdProxy_Disconnect
}

Definition at line 41 of file cproxy.c.

Referenced by StdProxy_Construct().