588 lines
17 KiB
C
588 lines
17 KiB
C
/*
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* COM stub (CStdStubBuffer) implementation
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*
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* Copyright 2001 Ove Kåven, TransGaming Technologies
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
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*/
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#include <stdarg.h>
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#define COBJMACROS
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#include "windef.h"
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#include "winbase.h"
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#include "winerror.h"
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#include "excpt.h"
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#include "objbase.h"
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#include "rpcproxy.h"
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#include "wine/debug.h"
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#include "wine/exception.h"
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#include "cpsf.h"
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WINE_DEFAULT_DEBUG_CHANNEL(ole);
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#define STUB_HEADER(This) (((CInterfaceStubHeader*)((This)->lpVtbl))[-1])
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static WINE_EXCEPTION_FILTER(stub_filter)
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{
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if (GetExceptionCode() == EXCEPTION_ACCESS_VIOLATION)
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return EXCEPTION_CONTINUE_SEARCH;
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return EXCEPTION_EXECUTE_HANDLER;
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}
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typedef struct
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{
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IUnknownVtbl *base_obj;
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IRpcStubBuffer *base_stub;
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CStdStubBuffer stub_buffer;
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} cstdstubbuffer_delegating_t;
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static inline cstdstubbuffer_delegating_t *impl_from_delegating( IRpcStubBuffer *iface )
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{
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return (cstdstubbuffer_delegating_t*)((char *)iface - FIELD_OFFSET(cstdstubbuffer_delegating_t, stub_buffer));
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}
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HRESULT WINAPI CStdStubBuffer_Construct(REFIID riid,
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LPUNKNOWN pUnkServer,
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PCInterfaceName name,
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CInterfaceStubVtbl *vtbl,
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LPPSFACTORYBUFFER pPSFactory,
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LPRPCSTUBBUFFER *ppStub)
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{
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CStdStubBuffer *This;
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IUnknown *pvServer;
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HRESULT r;
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TRACE("(%p,%p,%p,%p) %s\n", pUnkServer, vtbl, pPSFactory, ppStub, name);
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TRACE("iid=%s\n", debugstr_guid(vtbl->header.piid));
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TRACE("vtbl=%p\n", &vtbl->Vtbl);
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if (!IsEqualGUID(vtbl->header.piid, riid)) {
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ERR("IID mismatch during stub creation\n");
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return RPC_E_UNEXPECTED;
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}
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r = IUnknown_QueryInterface(pUnkServer, riid, (void**)&pvServer);
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if(FAILED(r))
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return r;
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This = HeapAlloc(GetProcessHeap(),HEAP_ZERO_MEMORY,sizeof(CStdStubBuffer));
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if (!This) {
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IUnknown_Release(pvServer);
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return E_OUTOFMEMORY;
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}
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This->lpVtbl = &vtbl->Vtbl;
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This->RefCount = 1;
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This->pvServerObject = pvServer;
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This->pPSFactory = pPSFactory;
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*ppStub = (LPRPCSTUBBUFFER)This;
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IPSFactoryBuffer_AddRef(pPSFactory);
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return S_OK;
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}
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static CRITICAL_SECTION delegating_vtbl_section;
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static CRITICAL_SECTION_DEBUG critsect_debug =
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{
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0, 0, &delegating_vtbl_section,
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{ &critsect_debug.ProcessLocksList, &critsect_debug.ProcessLocksList },
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0, 0, { (DWORD_PTR)(__FILE__ ": delegating_vtbl_section") }
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};
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static CRITICAL_SECTION delegating_vtbl_section = { &critsect_debug, -1, 0, 0, 0, 0 };
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typedef struct
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{
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DWORD ref;
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IUnknownVtbl vtbl;
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} ref_counted_vtbl;
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static struct
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{
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ref_counted_vtbl *table;
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DWORD size;
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} current_vtbl;
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static HRESULT WINAPI delegating_QueryInterface(IUnknown *pUnk, REFIID iid, void **ppv)
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{
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*ppv = (void *)pUnk;
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return S_OK;
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}
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static ULONG WINAPI delegating_AddRef(IUnknown *pUnk)
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{
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return 1;
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}
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static ULONG WINAPI delegating_Release(IUnknown *pUnk)
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{
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return 1;
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}
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#if defined(__i386__)
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/* The idea here is to replace the first param on the stack
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ie. This (which will point to cstdstubbuffer_delegating_t)
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with This->stub_buffer.pvServerObject and then jump to the
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relevant offset in This->stub_buffer.pvServerObject's vtbl.
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*/
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#include "pshpack1.h"
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typedef struct {
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DWORD mov1; /* mov 0x4(%esp), %eax 8b 44 24 04 */
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WORD mov2; /* mov 0x10(%eax), %eax 8b 40 */
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BYTE sixteen; /* 10 */
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DWORD mov3; /* mov %eax, 0x4(%esp) 89 44 24 04 */
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WORD mov4; /* mov (%eax), %eax 8b 00 */
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WORD mov5; /* mov offset(%eax), %eax 8b 80 */
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DWORD offset; /* xx xx xx xx */
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WORD jmp; /* jmp *%eax ff e0 */
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BYTE pad[3]; /* lea 0x0(%esi), %esi 8d 76 00 */
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} vtbl_method_t;
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#include "poppack.h"
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static void fill_table(IUnknownVtbl *vtbl, DWORD num)
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{
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vtbl_method_t *method;
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void **entry;
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DWORD i;
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vtbl->QueryInterface = delegating_QueryInterface;
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vtbl->AddRef = delegating_AddRef;
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vtbl->Release = delegating_Release;
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method = (vtbl_method_t*)((void **)vtbl + num);
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entry = (void**)(vtbl + 1);
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for(i = 3; i < num; i++)
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{
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*entry = method;
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method->mov1 = 0x0424448b;
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method->mov2 = 0x408b;
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method->sixteen = 0x10;
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method->mov3 = 0x04244489;
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method->mov4 = 0x008b;
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method->mov5 = 0x808b;
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method->offset = i << 2;
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method->jmp = 0xe0ff;
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method->pad[0] = 0x8d;
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method->pad[1] = 0x76;
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method->pad[2] = 0x00;
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method++;
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entry++;
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}
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}
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#else /* __i386__ */
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typedef struct {int dummy;} vtbl_method_t;
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static void fill_table(IUnknownVtbl *vtbl, DWORD num)
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{
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ERR("delegated stubs are not supported on this architecture\n");
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}
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#endif /* __i386__ */
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void create_delegating_vtbl(DWORD num_methods)
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{
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TRACE("%d\n", num_methods);
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if(num_methods <= 3)
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{
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ERR("should have more than %d methods\n", num_methods);
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return;
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}
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EnterCriticalSection(&delegating_vtbl_section);
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if(num_methods > current_vtbl.size)
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{
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DWORD size;
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if(current_vtbl.table && current_vtbl.table->ref == 0)
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{
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TRACE("freeing old table\n");
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HeapFree(GetProcessHeap(), 0, current_vtbl.table);
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}
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size = sizeof(DWORD) + num_methods * sizeof(void*) + (num_methods - 3) * sizeof(vtbl_method_t);
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current_vtbl.table = HeapAlloc(GetProcessHeap(), 0, size);
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fill_table(¤t_vtbl.table->vtbl, num_methods);
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current_vtbl.table->ref = 0;
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current_vtbl.size = num_methods;
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}
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LeaveCriticalSection(&delegating_vtbl_section);
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}
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static IUnknownVtbl *get_delegating_vtbl(void)
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{
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IUnknownVtbl *ret;
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EnterCriticalSection(&delegating_vtbl_section);
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current_vtbl.table->ref++;
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ret = ¤t_vtbl.table->vtbl;
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LeaveCriticalSection(&delegating_vtbl_section);
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return ret;
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}
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static void release_delegating_vtbl(IUnknownVtbl *vtbl)
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{
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ref_counted_vtbl *table = (ref_counted_vtbl*)((DWORD *)vtbl - 1);
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EnterCriticalSection(&delegating_vtbl_section);
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table->ref--;
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TRACE("ref now %d\n", table->ref);
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if(table->ref == 0 && table != current_vtbl.table)
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{
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TRACE("... and we're not current so free'ing\n");
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HeapFree(GetProcessHeap(), 0, table);
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}
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LeaveCriticalSection(&delegating_vtbl_section);
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}
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HRESULT WINAPI CStdStubBuffer_Delegating_Construct(REFIID riid,
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LPUNKNOWN pUnkServer,
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PCInterfaceName name,
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CInterfaceStubVtbl *vtbl,
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REFIID delegating_iid,
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LPPSFACTORYBUFFER pPSFactory,
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LPRPCSTUBBUFFER *ppStub)
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{
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cstdstubbuffer_delegating_t *This;
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IUnknown *pvServer;
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HRESULT r;
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TRACE("(%p,%p,%p,%p) %s\n", pUnkServer, vtbl, pPSFactory, ppStub, name);
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TRACE("iid=%s delegating to %s\n", debugstr_guid(vtbl->header.piid), debugstr_guid(delegating_iid));
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TRACE("vtbl=%p\n", &vtbl->Vtbl);
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if (!IsEqualGUID(vtbl->header.piid, riid))
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{
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ERR("IID mismatch during stub creation\n");
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return RPC_E_UNEXPECTED;
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}
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r = IUnknown_QueryInterface(pUnkServer, riid, (void**)&pvServer);
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if(FAILED(r)) return r;
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This = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(*This));
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if (!This)
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{
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IUnknown_Release(pvServer);
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return E_OUTOFMEMORY;
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}
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This->base_obj = get_delegating_vtbl();
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r = create_stub(delegating_iid, (IUnknown*)&This->base_obj, &This->base_stub);
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if(FAILED(r))
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{
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release_delegating_vtbl(This->base_obj);
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HeapFree(GetProcessHeap(), 0, This);
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IUnknown_Release(pvServer);
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return r;
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}
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This->stub_buffer.lpVtbl = &vtbl->Vtbl;
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This->stub_buffer.RefCount = 1;
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This->stub_buffer.pvServerObject = pvServer;
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This->stub_buffer.pPSFactory = pPSFactory;
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*ppStub = (LPRPCSTUBBUFFER)&This->stub_buffer;
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IPSFactoryBuffer_AddRef(pPSFactory);
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return S_OK;
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}
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HRESULT WINAPI CStdStubBuffer_QueryInterface(LPRPCSTUBBUFFER iface,
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REFIID riid,
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LPVOID *obj)
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{
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CStdStubBuffer *This = (CStdStubBuffer *)iface;
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TRACE("(%p)->QueryInterface(%s,%p)\n",This,debugstr_guid(riid),obj);
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if (IsEqualIID(&IID_IUnknown, riid) ||
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IsEqualIID(&IID_IRpcStubBuffer, riid))
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{
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IUnknown_AddRef(iface);
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*obj = iface;
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return S_OK;
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}
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*obj = NULL;
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return E_NOINTERFACE;
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}
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ULONG WINAPI CStdStubBuffer_AddRef(LPRPCSTUBBUFFER iface)
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{
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CStdStubBuffer *This = (CStdStubBuffer *)iface;
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TRACE("(%p)->AddRef()\n",This);
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return InterlockedIncrement(&This->RefCount);
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}
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ULONG WINAPI NdrCStdStubBuffer_Release(LPRPCSTUBBUFFER iface,
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LPPSFACTORYBUFFER pPSF)
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{
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CStdStubBuffer *This = (CStdStubBuffer *)iface;
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ULONG refs;
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TRACE("(%p)->Release()\n",This);
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refs = InterlockedDecrement(&This->RefCount);
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if (!refs)
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{
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/* test_Release shows that native doesn't call Disconnect here.
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We'll leave it in for the time being. */
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IRpcStubBuffer_Disconnect(iface);
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IPSFactoryBuffer_Release(pPSF);
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HeapFree(GetProcessHeap(),0,This);
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}
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return refs;
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}
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ULONG WINAPI NdrCStdStubBuffer2_Release(LPRPCSTUBBUFFER iface,
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LPPSFACTORYBUFFER pPSF)
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{
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cstdstubbuffer_delegating_t *This = impl_from_delegating( iface );
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ULONG refs;
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TRACE("(%p)->Release()\n", This);
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refs = InterlockedDecrement(&This->stub_buffer.RefCount);
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if (!refs)
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{
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/* Just like NdrCStdStubBuffer_Release, we shouldn't call
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Disconnect here */
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IRpcStubBuffer_Disconnect((IRpcStubBuffer *)&This->stub_buffer);
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IRpcStubBuffer_Release(This->base_stub);
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release_delegating_vtbl(This->base_obj);
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IPSFactoryBuffer_Release(pPSF);
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HeapFree(GetProcessHeap(), 0, This);
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}
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return refs;
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}
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HRESULT WINAPI CStdStubBuffer_Connect(LPRPCSTUBBUFFER iface,
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LPUNKNOWN lpUnkServer)
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{
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CStdStubBuffer *This = (CStdStubBuffer *)iface;
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HRESULT r;
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IUnknown *new = NULL;
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TRACE("(%p)->Connect(%p)\n",This,lpUnkServer);
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r = IUnknown_QueryInterface(lpUnkServer, STUB_HEADER(This).piid, (void**)&new);
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new = InterlockedExchangePointer((void**)&This->pvServerObject, new);
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if(new)
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IUnknown_Release(new);
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return r;
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}
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void WINAPI CStdStubBuffer_Disconnect(LPRPCSTUBBUFFER iface)
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{
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CStdStubBuffer *This = (CStdStubBuffer *)iface;
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IUnknown *old;
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TRACE("(%p)->Disconnect()\n",This);
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old = InterlockedExchangePointer((void**)&This->pvServerObject, NULL);
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if(old)
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IUnknown_Release(old);
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}
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HRESULT WINAPI CStdStubBuffer_Invoke(LPRPCSTUBBUFFER iface,
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PRPCOLEMESSAGE pMsg,
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LPRPCCHANNELBUFFER pChannel)
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{
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CStdStubBuffer *This = (CStdStubBuffer *)iface;
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DWORD dwPhase = STUB_UNMARSHAL;
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HRESULT hr = S_OK;
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TRACE("(%p)->Invoke(%p,%p)\n",This,pMsg,pChannel);
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__TRY
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{
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if (STUB_HEADER(This).pDispatchTable)
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STUB_HEADER(This).pDispatchTable[pMsg->iMethod](iface, pChannel, (PRPC_MESSAGE)pMsg, &dwPhase);
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else /* pure interpreted */
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NdrStubCall2(iface, pChannel, (PRPC_MESSAGE)pMsg, &dwPhase);
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}
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__EXCEPT(stub_filter)
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{
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DWORD dwExceptionCode = GetExceptionCode();
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WARN("a stub call failed with exception 0x%08x (%d)\n", dwExceptionCode, dwExceptionCode);
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if (FAILED(dwExceptionCode))
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hr = dwExceptionCode;
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else
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hr = HRESULT_FROM_WIN32(dwExceptionCode);
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}
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__ENDTRY
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return hr;
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}
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LPRPCSTUBBUFFER WINAPI CStdStubBuffer_IsIIDSupported(LPRPCSTUBBUFFER iface,
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REFIID riid)
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{
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CStdStubBuffer *This = (CStdStubBuffer *)iface;
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TRACE("(%p)->IsIIDSupported(%s)\n",This,debugstr_guid(riid));
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return IsEqualGUID(STUB_HEADER(This).piid, riid) ? iface : NULL;
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}
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ULONG WINAPI CStdStubBuffer_CountRefs(LPRPCSTUBBUFFER iface)
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{
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CStdStubBuffer *This = (CStdStubBuffer *)iface;
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TRACE("(%p)->CountRefs()\n",This);
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return This->RefCount;
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}
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HRESULT WINAPI CStdStubBuffer_DebugServerQueryInterface(LPRPCSTUBBUFFER iface,
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LPVOID *ppv)
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{
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CStdStubBuffer *This = (CStdStubBuffer *)iface;
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TRACE("(%p)->DebugServerQueryInterface(%p)\n",This,ppv);
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return S_OK;
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}
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void WINAPI CStdStubBuffer_DebugServerRelease(LPRPCSTUBBUFFER iface,
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LPVOID pv)
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{
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CStdStubBuffer *This = (CStdStubBuffer *)iface;
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TRACE("(%p)->DebugServerRelease(%p)\n",This,pv);
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}
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const IRpcStubBufferVtbl CStdStubBuffer_Vtbl =
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{
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CStdStubBuffer_QueryInterface,
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CStdStubBuffer_AddRef,
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NULL,
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CStdStubBuffer_Connect,
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CStdStubBuffer_Disconnect,
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CStdStubBuffer_Invoke,
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CStdStubBuffer_IsIIDSupported,
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CStdStubBuffer_CountRefs,
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CStdStubBuffer_DebugServerQueryInterface,
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CStdStubBuffer_DebugServerRelease
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};
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static HRESULT WINAPI CStdStubBuffer_Delegating_Connect(LPRPCSTUBBUFFER iface,
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LPUNKNOWN lpUnkServer)
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{
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cstdstubbuffer_delegating_t *This = impl_from_delegating(iface);
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HRESULT r;
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TRACE("(%p)->Connect(%p)\n", This, lpUnkServer);
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r = CStdStubBuffer_Connect(iface, lpUnkServer);
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if(SUCCEEDED(r))
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r = IRpcStubBuffer_Connect(This->base_stub, (IUnknown*)&This->base_obj);
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return r;
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}
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static void WINAPI CStdStubBuffer_Delegating_Disconnect(LPRPCSTUBBUFFER iface)
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{
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cstdstubbuffer_delegating_t *This = impl_from_delegating(iface);
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TRACE("(%p)->Disconnect()\n", This);
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IRpcStubBuffer_Disconnect(This->base_stub);
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CStdStubBuffer_Disconnect(iface);
|
|
}
|
|
|
|
static ULONG WINAPI CStdStubBuffer_Delegating_CountRefs(LPRPCSTUBBUFFER iface)
|
|
{
|
|
cstdstubbuffer_delegating_t *This = impl_from_delegating(iface);
|
|
ULONG ret;
|
|
TRACE("(%p)->CountRefs()\n", This);
|
|
|
|
ret = CStdStubBuffer_CountRefs(iface);
|
|
ret += IRpcStubBuffer_CountRefs(This->base_stub);
|
|
|
|
return ret;
|
|
}
|
|
|
|
const IRpcStubBufferVtbl CStdStubBuffer_Delegating_Vtbl =
|
|
{
|
|
CStdStubBuffer_QueryInterface,
|
|
CStdStubBuffer_AddRef,
|
|
NULL,
|
|
CStdStubBuffer_Delegating_Connect,
|
|
CStdStubBuffer_Delegating_Disconnect,
|
|
CStdStubBuffer_Invoke,
|
|
CStdStubBuffer_IsIIDSupported,
|
|
CStdStubBuffer_Delegating_CountRefs,
|
|
CStdStubBuffer_DebugServerQueryInterface,
|
|
CStdStubBuffer_DebugServerRelease
|
|
};
|
|
|
|
const MIDL_SERVER_INFO *CStdStubBuffer_GetServerInfo(IRpcStubBuffer *iface)
|
|
{
|
|
CStdStubBuffer *This = (CStdStubBuffer *)iface;
|
|
return STUB_HEADER(This).pServerInfo;
|
|
}
|
|
|
|
/************************************************************************
|
|
* NdrStubForwardingFunction [RPCRT4.@]
|
|
*/
|
|
void __RPC_STUB NdrStubForwardingFunction( IRpcStubBuffer *iface, IRpcChannelBuffer *pChannel,
|
|
PRPC_MESSAGE pMsg, DWORD *pdwStubPhase )
|
|
{
|
|
/* Note pMsg is passed intact since RPCOLEMESSAGE is basically a RPC_MESSAGE. */
|
|
|
|
cstdstubbuffer_delegating_t *This = impl_from_delegating(iface);
|
|
HRESULT r = IRpcStubBuffer_Invoke(This->base_stub, (RPCOLEMESSAGE*)pMsg, pChannel);
|
|
if(FAILED(r)) RpcRaiseException(r);
|
|
return;
|
|
}
|
|
|
|
/***********************************************************************
|
|
* NdrStubInitialize [RPCRT4.@]
|
|
*/
|
|
void WINAPI NdrStubInitialize(PRPC_MESSAGE pRpcMsg,
|
|
PMIDL_STUB_MESSAGE pStubMsg,
|
|
PMIDL_STUB_DESC pStubDescriptor,
|
|
LPRPCCHANNELBUFFER pRpcChannelBuffer)
|
|
{
|
|
TRACE("(%p,%p,%p,%p)\n", pRpcMsg, pStubMsg, pStubDescriptor, pRpcChannelBuffer);
|
|
NdrServerInitializeNew(pRpcMsg, pStubMsg, pStubDescriptor);
|
|
pStubMsg->pRpcChannelBuffer = pRpcChannelBuffer;
|
|
}
|
|
|
|
/***********************************************************************
|
|
* NdrStubGetBuffer [RPCRT4.@]
|
|
*/
|
|
void WINAPI NdrStubGetBuffer(LPRPCSTUBBUFFER iface,
|
|
LPRPCCHANNELBUFFER pRpcChannelBuffer,
|
|
PMIDL_STUB_MESSAGE pStubMsg)
|
|
{
|
|
CStdStubBuffer *This = (CStdStubBuffer *)iface;
|
|
HRESULT hr;
|
|
|
|
TRACE("(%p, %p, %p)\n", This, pRpcChannelBuffer, pStubMsg);
|
|
|
|
pStubMsg->RpcMsg->BufferLength = pStubMsg->BufferLength;
|
|
hr = IRpcChannelBuffer_GetBuffer(pRpcChannelBuffer,
|
|
(RPCOLEMESSAGE *)pStubMsg->RpcMsg, STUB_HEADER(This).piid);
|
|
if (FAILED(hr))
|
|
{
|
|
RpcRaiseException(hr);
|
|
return;
|
|
}
|
|
|
|
pStubMsg->BufferStart = pStubMsg->RpcMsg->Buffer;
|
|
pStubMsg->BufferEnd = pStubMsg->BufferStart + pStubMsg->BufferLength;
|
|
pStubMsg->Buffer = pStubMsg->BufferStart;
|
|
}
|