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wine-wine/dlls/rpcrt4/cproxy.c

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/*
* COM proxy implementation
*
* Copyright 2001 Ove Kåven, TransGaming Technologies
* Copyright 2009 Alexandre Julliard
*
* 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
*/
#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 "ndr_stubless.h"
#include "wine/asm.h"
#include "wine/debug.h"
WINE_DEFAULT_DEBUG_CHANNEL(ole);
static const IRpcProxyBufferVtbl StdProxy_Vtbl;
static inline StdProxyImpl *impl_from_IRpcProxyBuffer(IRpcProxyBuffer *iface)
{
return CONTAINING_RECORD(iface, StdProxyImpl, IRpcProxyBuffer_iface);
}
static inline StdProxyImpl *impl_from_proxy_obj( void *iface )
{
return CONTAINING_RECORD(iface, StdProxyImpl, PVtbl);
}
#ifdef __i386__
extern void call_stubless_func(void);
__ASM_GLOBAL_FUNC(call_stubless_func,
"movl 4(%esp),%ecx\n\t" /* This pointer */
"movl (%ecx),%ecx\n\t" /* This->lpVtbl */
"movl -8(%ecx),%ecx\n\t" /* MIDL_STUBLESS_PROXY_INFO */
"movl 8(%ecx),%edx\n\t" /* info->FormatStringOffset */
"movzwl (%edx,%eax,2),%edx\n\t" /* FormatStringOffset[index] */
"addl 4(%ecx),%edx\n\t" /* info->ProcFormatString + offset */
"movzbl 1(%edx),%eax\n\t" /* Oi_flags */
"andl $0x08,%eax\n\t" /* Oi_HAS_RPCFLAGS */
"shrl $1,%eax\n\t"
"movzwl 4(%edx,%eax),%eax\n\t" /* arguments size */
"pushl %eax\n\t"
__ASM_CFI(".cfi_adjust_cfa_offset 4\n\t")
"leal 8(%esp),%eax\n\t" /* &This */
"pushl %eax\n\t"
__ASM_CFI(".cfi_adjust_cfa_offset 4\n\t")
"pushl %edx\n\t" /* format string */
__ASM_CFI(".cfi_adjust_cfa_offset 4\n\t")
"pushl (%ecx)\n\t" /* info->pStubDesc */
__ASM_CFI(".cfi_adjust_cfa_offset 4\n\t")
"call " __ASM_NAME("ndr_client_call") "\n\t"
"leal 12(%esp),%esp\n\t"
__ASM_CFI(".cfi_adjust_cfa_offset -12\n\t")
"popl %edx\n\t" /* arguments size */
__ASM_CFI(".cfi_adjust_cfa_offset -4\n\t")
"movl (%esp),%ecx\n\t" /* return address */
"addl %edx,%esp\n\t"
"jmp *%ecx" );
#include "pshpack1.h"
struct thunk
{
BYTE mov_eax;
DWORD index;
BYTE jmp;
LONG handler;
};
#include "poppack.h"
static inline void init_thunk( struct thunk *thunk, unsigned int index )
{
thunk->mov_eax = 0xb8; /* movl $n,%eax */
thunk->index = index;
thunk->jmp = 0xe9; /* jmp */
thunk->handler = (char *)call_stubless_func - (char *)(&thunk->handler + 1);
}
#elif defined(__x86_64__)
extern void call_stubless_func(void);
__ASM_GLOBAL_FUNC(call_stubless_func,
"movq %rcx,0x8(%rsp)\n\t"
"movq %rdx,0x10(%rsp)\n\t"
"movq %r8,0x18(%rsp)\n\t"
"movq %r9,0x20(%rsp)\n\t"
"leaq 0x8(%rsp),%r8\n\t" /* &This */
"movq (%rcx),%rcx\n\t" /* This->lpVtbl */
"movq -0x10(%rcx),%rcx\n\t" /* MIDL_STUBLESS_PROXY_INFO */
"movq 0x10(%rcx),%rdx\n\t" /* info->FormatStringOffset */
"movzwq (%rdx,%r10,2),%rdx\n\t" /* FormatStringOffset[index] */
"addq 8(%rcx),%rdx\n\t" /* info->ProcFormatString + offset */
"movq (%rcx),%rcx\n\t" /* info->pStubDesc */
"subq $0x38,%rsp\n\t"
__ASM_CFI(".cfi_adjust_cfa_offset 0x38\n\t")
"movq %xmm1,0x20(%rsp)\n\t"
"movq %xmm2,0x28(%rsp)\n\t"
"movq %xmm3,0x30(%rsp)\n\t"
"leaq 0x18(%rsp),%r9\n\t" /* fpu_args */
"call " __ASM_NAME("ndr_client_call") "\n\t"
"addq $0x38,%rsp\n\t"
__ASM_CFI(".cfi_adjust_cfa_offset -0x38\n\t")
"ret" );
#include "pshpack1.h"
struct thunk
{
BYTE mov_r10[3];
DWORD index;
BYTE mov_rax[2];
void *call_stubless;
BYTE jmp_rax[2];
};
#include "poppack.h"
static const struct thunk thunk_template =
{
{ 0x49, 0xc7, 0xc2 }, 0, /* movq $index,%r10 */
{ 0x48, 0xb8 }, 0, /* movq $call_stubless_func,%rax */
{ 0xff, 0xe0 } /* jmp *%rax */
};
static inline void init_thunk( struct thunk *thunk, unsigned int index )
{
*thunk = thunk_template;
thunk->index = index;
thunk->call_stubless = call_stubless_func;
}
#elif defined(__arm__)
extern void call_stubless_func(void);
__ASM_GLOBAL_FUNC(call_stubless_func,
"push {r0-r3}\n\t"
"mov r2, sp\n\t" /* stack_top */
"push {fp,lr}\n\t"
"mov fp, sp\n\t"
"ldr r0, [r0]\n\t" /* This->lpVtbl */
"ldr r0, [r0,#-8]\n\t" /* MIDL_STUBLESS_PROXY_INFO */
"ldr r1, [r0,#8]\n\t" /* info->FormatStringOffset */
"ldrh r1, [r1,ip]\n\t" /* info->FormatStringOffset[index] */
"ldr ip, [r0,#4]\n\t" /* info->ProcFormatString */
"add r1, ip\n\t" /* info->ProcFormatString + offset */
"ldr r0, [r0]\n\t" /* info->pStubDesc */
#ifdef __SOFTFP__
"mov r3, #0\n\t"
#else
"vpush {s0-s15}\n\t" /* store the s0-s15/d0-d7 arguments */
"mov r3, sp\n\t" /* fpu_stack */
#endif
"bl " __ASM_NAME("ndr_client_call") "\n\t"
"mov sp, fp\n\t"
"pop {fp,lr}\n\t"
"add sp, #16\n\t"
"bx lr" );
struct thunk
{
DWORD ldr_ip; /* ldr ip,[pc] */
DWORD ldr_pc; /* ldr pc,[pc] */
DWORD index;
void *func;
};
static inline void init_thunk( struct thunk *thunk, unsigned int index )
{
thunk->ldr_ip = 0xe59fc000; /* ldr ip,[pc] */
thunk->ldr_pc = 0xe59ff000; /* ldr pc,[pc] */
thunk->index = index * sizeof(unsigned short);
thunk->func = call_stubless_func;
}
#else /* __i386__ */
#warning You must implement stubless proxies for your CPU
struct thunk
{
DWORD index;
};
static inline void init_thunk( struct thunk *thunk, unsigned int index )
{
thunk->index = index;
}
#endif /* __i386__ */
#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;
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;
}
BOOL fill_stubless_table( IUnknownVtbl *vtbl, DWORD num )
{
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;
}
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 );
}
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;
}
HRESULT WINAPI StdProxy_QueryInterface(IRpcProxyBuffer *iface, REFIID riid, void **obj)
{
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;
}
ULONG WINAPI StdProxy_AddRef(IRpcProxyBuffer *iface)
{
StdProxyImpl *This = impl_from_IRpcProxyBuffer(iface);
TRACE("(%p)->AddRef()\n",This);
return InterlockedIncrement(&This->RefCount);
}
static ULONG WINAPI StdProxy_Release(LPRPCPROXYBUFFER iface)
{
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;
}
HRESULT WINAPI StdProxy_Connect(IRpcProxyBuffer *iface, IRpcChannelBuffer *pChannel)
{
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;
}
void WINAPI StdProxy_Disconnect(IRpcProxyBuffer *iface)
{
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;
}
static const IRpcProxyBufferVtbl StdProxy_Vtbl =
{
StdProxy_QueryInterface,
StdProxy_AddRef,
StdProxy_Release,
StdProxy_Connect,
StdProxy_Disconnect
};
static void StdProxy_GetChannel(LPVOID iface,
LPRPCCHANNELBUFFER *ppChannel)
{
StdProxyImpl *This = impl_from_proxy_obj( iface );
TRACE("(%p)->GetChannel(%p) %s\n",This,ppChannel,This->name);
*ppChannel = This->pChannel;
}
static void StdProxy_GetIID(LPVOID iface,
const IID **ppiid)
{
StdProxyImpl *This = impl_from_proxy_obj( 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)
{
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);
}
ULONG WINAPI IUnknown_AddRef_Proxy(LPUNKNOWN iface)
{
StdProxyImpl *This = impl_from_proxy_obj( iface );
TRACE("(%p)->AddRef() %s\n",This,This->name);
return IUnknown_AddRef(This->pUnkOuter);
}
ULONG WINAPI IUnknown_Release_Proxy(LPUNKNOWN iface)
{
StdProxyImpl *This = impl_from_proxy_obj( 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);
}
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