572 lines
16 KiB
C++
572 lines
16 KiB
C++
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//+-------------------------------------------------------------------------
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//
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// Microsoft Windows
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// Copyright (C) Microsoft Corporation, 1992 - 2000.
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//
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// File: clipformat.cxx
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//
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// Contents: Support for Windows/OLE data types for oleprx32.dll.
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// Used to be transmit_as routines, now user_marshal routines.
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//
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// This file contains support for CLIPFORMAT.
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//
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// Functions:
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// CLIPFORMAT_UserSize
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// CLIPFORMAT_UserMarshal
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// CLIPFORMAT_UserUnmarshal
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// CLIPFORMAT_UserFree
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// CLIPFORMAT_UserSize64
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// CLIPFORMAT_UserMarshal64
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// CLIPFORMAT_UserUnmarshal64
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// CLIPFORMAT_UserFree64
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//
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// History: 13-Dec-00 JohnDoty Migrated from transmit.cxx
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//
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//--------------------------------------------------------------------------
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#include "stdrpc.hxx"
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#pragma hdrstop
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#include <oleauto.h>
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#include <objbase.h>
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#include "transmit.hxx"
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#include <rpcwdt.h>
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#include <storext.h>
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#include "widewrap.h"
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#include <valid.h>
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#include <obase.h>
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#include <stream.hxx>
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#include <winsta.h>
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#include <allproc.h>
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typedef HANDLE __stdcall FN_WinStationOpenServerW(LPWSTR);
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typedef BOOLEAN __stdcall FN_WinStationGetTermSrvCountersValue(HANDLE, ULONG, PVOID);
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typedef BOOLEAN __stdcall FN_WinStationCloseServer(HANDLE);
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static DWORD g_cTSSessions = -1;
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#include "carefulreader.hxx"
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#define ARRAYSIZE(a) (sizeof(a)/sizeof(a[0]))
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void CountTSSessions()
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{
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DWORD cTSSessions = 0;
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HINSTANCE hTSLib = LoadLibraryW(L"winsta.dll");
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if (hTSLib)
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{
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FN_WinStationOpenServerW *pFNOpen = (FN_WinStationOpenServerW *)GetProcAddress(hTSLib, "WinStationOpenServerW");
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FN_WinStationGetTermSrvCountersValue *pFNCount = (FN_WinStationGetTermSrvCountersValue *)GetProcAddress(hTSLib, "WinStationGetTermSrvCountersValue");
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FN_WinStationCloseServer *pFNClose = (FN_WinStationCloseServer *)GetProcAddress(hTSLib, "WinStationCloseServer");
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if (pFNOpen && pFNCount && pFNClose)
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{
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HANDLE hServer = pFNOpen(reinterpret_cast<WCHAR*>(SERVERNAME_CURRENT));
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if (hServer != NULL)
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{
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TS_COUNTER tsCounters[2] = {0};
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tsCounters[0].counterHead.dwCounterID = TERMSRV_CURRENT_DISC_SESSIONS;
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tsCounters[1].counterHead.dwCounterID = TERMSRV_CURRENT_ACTIVE_SESSIONS;
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if (pFNCount(hServer, ARRAYSIZE(tsCounters), tsCounters))
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{
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int i;
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for (i = 0; i < ARRAYSIZE(tsCounters); i++)
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{
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if (tsCounters[i].counterHead.bResult)
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{
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cTSSessions += tsCounters[i].dwValue;
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}
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}
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}
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pFNClose(hServer);
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}
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}
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FreeLibrary(hTSLib);
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}
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g_cTSSessions = cTSSessions;
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}
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//+-------------------------------------------------------------------------
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//
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// Function: CLIPFORMAT_UserSize
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//
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// Synopsis: Sizes a CLIPFORMAT.
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//
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// Derivation: A union of a long and a string.
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//
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// history: Feb-96 Ryszardk Created
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//
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//--------------------------------------------------------------------------
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unsigned long __RPC_USER
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CLIPFORMAT_UserSize(
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unsigned long * pFlags,
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unsigned long Offset,
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CLIPFORMAT * pObject )
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{
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if ( !pObject )
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return( Offset );
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if (g_cTSSessions == -1)
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{
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CountTSSessions();
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}
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// userCLIPFORMAT is an encapsulated union with a string.
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LENGTH_ALIGN( Offset, 3);
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Offset += sizeof(long) + sizeof(void *);
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if ( (NON_STANDARD_CLIPFORMAT(pObject)) && ((REMOTE_CLIPFORMAT( pFlags) )
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|| (g_cTSSessions > 1 ))) // ignore console session
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{
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wchar_t temp[CLIPFORMAT_BUFFER_MAX];
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int ret = GetClipboardFormatName( *pObject,
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temp,
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CLIPFORMAT_BUFFER_MAX - 1 );
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if ( ret )
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{
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Offset += 3 * sizeof(long) + (ret+1) * sizeof(wchar_t);
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}
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else
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RAISE_RPC_EXCEPTION( DV_E_CLIPFORMAT );
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}
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return( Offset );
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}
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//+-------------------------------------------------------------------------
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//
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// Function: CLIPFORMAT_UserMarshal
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//
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// Synopsis: Marshals a CLIPFORMAT.
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//
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// Derivation: A union of a long and a string.
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//
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// history: Feb-96 Ryszardk Created
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//
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//--------------------------------------------------------------------------
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unsigned char __RPC_FAR * __RPC_USER
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CLIPFORMAT_UserMarshal(
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unsigned long * pFlags,
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unsigned char * pBuffer,
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CLIPFORMAT * pObject )
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{
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if ( !pObject )
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return pBuffer;
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// userCLIPFORMAT is an encapsulated union with a string.
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ALIGN( pBuffer, 3);
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if ( (NON_STANDARD_CLIPFORMAT(pObject)) && ((REMOTE_CLIPFORMAT( pFlags) )
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|| (g_cTSSessions > 1 ))) // ignore console session
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{
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// sending a wide string
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unsigned long ret;
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*(PULONG_LV_CAST pBuffer)++ = WDT_DATA_MARKER;
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*(PULONG_LV_CAST pBuffer)++ = (ulong) *pObject;
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// On Chicago this is GetClipboardFormatNameX.
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// When the buffer is too short, this call would still
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// return a decent, null terminated, truncated string.
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//
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ret = (ulong) GetClipboardFormatName( *pObject,
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(wchar_t *)(pBuffer + 12),
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CLIPFORMAT_BUFFER_MAX - 1
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);
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if ( ret )
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{
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ret++;
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// conformat size etc. for string.
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*(PULONG_LV_CAST pBuffer)++ = ret;
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*(PULONG_LV_CAST pBuffer)++ = 0;
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*(PULONG_LV_CAST pBuffer)++ = ret;
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// skip the string in the bbuffer, including the terminator
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pBuffer += ret * sizeof(wchar_t);
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}
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else
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RpcRaiseException( DV_E_CLIPFORMAT );
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}
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else
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{
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// sending the number itself
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*(PULONG_LV_CAST pBuffer)++ = WDT_HANDLE_MARKER;
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*(PULONG_LV_CAST pBuffer)++ = (ulong) *pObject;
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}
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return( pBuffer );
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}
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//+-------------------------------------------------------------------------
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//
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// Function: CLIPFORMAT_UserUnmarshal
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//
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// Synopsis: Unmarshals a CLIPFORMAT; registers if needed.
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//
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// Derivation: A union of a long and a string.
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//
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// history: Feb-96 Ryszardk Created
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// Aug-99 JohnStra Added consistency checks
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//
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//--------------------------------------------------------------------------
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unsigned char __RPC_FAR * __RPC_USER
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CLIPFORMAT_UserUnmarshal(
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unsigned long * pFlags,
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unsigned char * pBuffer,
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CLIPFORMAT * pObject )
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{
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ulong UnionDisc;
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UINT cf;
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// Get the buffer size and the start of the buffer.
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CUserMarshalInfo MarshalInfo( pFlags, pBuffer );
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ULONG_PTR BufferSize = MarshalInfo.GetBufferSize();
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UCHAR* pBufferStart = MarshalInfo.GetBuffer();
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// Align the buffer and save the fixup size.
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ALIGN( pBuffer, 3 );
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ULONG_PTR cbFixup = (ULONG_PTR)(pBuffer - pBufferStart);
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// Check for EOB before accessing buffer.
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CHECK_BUFFER_SIZE( BufferSize, cbFixup + (2 * sizeof( ULONG )) );
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UnionDisc = *(PULONG_LV_CAST pBuffer)++;
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cf = (WORD) *(PULONG_LV_CAST pBuffer)++;
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if ( WDT_DATA_MARKER == UnionDisc )
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{
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// CLIPFORMAT value must be in valid range.
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if ( cf < 0xc000 || cf > 0xffff )
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RAISE_RPC_EXCEPTION( RPC_X_BAD_STUB_DATA );
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// Check for EOB before accessing string header.
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CHECK_BUFFER_SIZE( BufferSize, cbFixup + (5 * sizeof( ULONG )) );
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// Get the string header from the buffer and subtract the string
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// header from the BufferSize.
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ULONG ConfSize = *(PULONG_LV_CAST pBuffer)++;
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ULONG Offset = *(PULONG_LV_CAST pBuffer)++;
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ULONG ActualSize = *(PULONG_LV_CAST pBuffer)++;
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// Verify the header: Offset must always be zero, length must match
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// size, and size can't be zero since that would mean no NULL
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// terminator.
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if ( 0 != Offset || ActualSize != ConfSize || 0 == ActualSize )
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RAISE_RPC_EXCEPTION( RPC_X_INVALID_BOUND );
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// Check for EOB before accessing string.
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CHECK_BUFFER_SIZE(
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BufferSize,
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cbFixup + (5 * sizeof(ULONG)) + (ActualSize * sizeof(WCHAR)) );
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// Last two bytes of the buffer must be unicode terminator
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if ( *(WCHAR*)(pBuffer + ((ActualSize-1) * sizeof(WCHAR))) != 0x0000 )
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RAISE_RPC_EXCEPTION( RPC_X_INVALID_BOUND );
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// Must be only 1 unicode terminator.
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if ( (ULONG)(lstrlenW( (WCHAR*)pBuffer ) + 1) != ActualSize )
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RAISE_RPC_EXCEPTION( RPC_X_INVALID_BOUND );
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// Register the clipboard format.
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cf = RegisterClipboardFormat( (wchar_t *)pBuffer );
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if ( cf == 0 )
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RAISE_RPC_EXCEPTION( DV_E_CLIPFORMAT );
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// Advance buffer pointer past string.
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pBuffer += ActualSize * sizeof(wchar_t);
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}
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else if ( WDT_HANDLE_MARKER != UnionDisc )
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{
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RAISE_RPC_EXCEPTION( RPC_S_INVALID_TAG );
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}
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*pObject = (CLIPFORMAT) cf;
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return( pBuffer );
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}
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//+-------------------------------------------------------------------------
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//
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// Function: CLIPFORMAT_UserFree
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//
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// Synopsis: Frees remnants of CLIPFORMAT.
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//
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// Derivation: A union of a long and a string.
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//
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// history: Feb-96 Ryszardk Created
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//
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//--------------------------------------------------------------------------
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void __RPC_USER
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CLIPFORMAT_UserFree(
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unsigned long * pFlags,
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CLIPFORMAT * pObject )
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{
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// Nothing to free, as nothing gets allocated when we unmarshal.
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}
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#if defined(_WIN64)
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//+-------------------------------------------------------------------------
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//
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// Function: CLIPFORMAT_UserSize64
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//
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// Synopsis: Sizes a CLIPFORMAT.
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//
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// Derivation: A union of a long and a string.
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//
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// history: Dec-00 JohnDoty Created from 32bit function
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//
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//--------------------------------------------------------------------------
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unsigned long __RPC_USER
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CLIPFORMAT_UserSize64 (
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unsigned long * pFlags,
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unsigned long Offset,
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CLIPFORMAT * pObject )
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{
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if ( !pObject )
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return( Offset );
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// userCLIPFORMAT is an encapsulated union with a string.
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// max align of the union is size of 64b pointer.
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LENGTH_ALIGN( Offset, 7 );
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Offset += 8; // 4 byte discriminant, 4 byte alignment
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if ( (NON_STANDARD_CLIPFORMAT(pObject)) && ((REMOTE_CLIPFORMAT( pFlags) )
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|| (g_cTSSessions > 1 ))) // ignore console session
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{
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// Writing another pointer...
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Offset += 8; // 64b pointer
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wchar_t temp[CLIPFORMAT_BUFFER_MAX + 1];
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int ret = GetClipboardFormatName( *pObject,
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temp,
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CLIPFORMAT_BUFFER_MAX );
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if ( ret )
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{
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// This string has 3 conformance fields (64b) followed by an
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// array of 16b chars.
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Offset += (3 * 8) + ((ret + 1) * 2);
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}
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else
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RAISE_RPC_EXCEPTION( DV_E_CLIPFORMAT );
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}
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else
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{
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// Writing a DWORD
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Offset += 4;
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}
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return( Offset );
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}
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//+-------------------------------------------------------------------------
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//
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// Function: CLIPFORMAT_UserMarshal64
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//
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// Synopsis: Marshals a CLIPFORMAT.
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//
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// Derivation: A union of a long and a string.
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||
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//
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||
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// history: Dec-00 JohnDoty Created from 32bit function
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||
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//
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//--------------------------------------------------------------------------
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unsigned char __RPC_FAR * __RPC_USER
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CLIPFORMAT_UserMarshal64 (
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unsigned long * pFlags,
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|
unsigned char * pBuffer,
|
||
|
|
CLIPFORMAT * pObject )
|
||
|
|
{
|
||
|
|
if ( !pObject )
|
||
|
|
return pBuffer;
|
||
|
|
|
||
|
|
// userCLIPFORMAT is an encapsulated union with a string.
|
||
|
|
|
||
|
|
ALIGN( pBuffer, 7 );
|
||
|
|
|
||
|
|
if ( (NON_STANDARD_CLIPFORMAT(pObject)) && ((REMOTE_CLIPFORMAT( pFlags) )
|
||
|
|
|| (g_cTSSessions > 1 ))) // ignore console session
|
||
|
|
{
|
||
|
|
// sending a wide string
|
||
|
|
unsigned long ret;
|
||
|
|
|
||
|
|
*(PULONG_LV_CAST pBuffer)++ = WDT_DATA_MARKER;
|
||
|
|
ALIGN( pBuffer, 7 );
|
||
|
|
*(PHYPER_LV_CAST pBuffer)++ = (hyper) *pObject;
|
||
|
|
|
||
|
|
// On Chicago this is GetClipboardFormatNameX.
|
||
|
|
// When the buffer is too short, this call would still
|
||
|
|
// return a decent, null terminated, truncated string.
|
||
|
|
//
|
||
|
|
ret = (ulong) GetClipboardFormatName( *pObject,
|
||
|
|
(wchar_t *)(pBuffer + (3 * 8)),
|
||
|
|
CLIPFORMAT_BUFFER_MAX
|
||
|
|
);
|
||
|
|
|
||
|
|
if ( ret )
|
||
|
|
{
|
||
|
|
// Account for the trailing NULL.
|
||
|
|
ret ++;
|
||
|
|
|
||
|
|
// conformat size etc. for string.
|
||
|
|
*(PHYPER_LV_CAST pBuffer)++ = ret; // Conformance
|
||
|
|
*(PHYPER_LV_CAST pBuffer)++ = 0; // Offset
|
||
|
|
*(PHYPER_LV_CAST pBuffer)++ = ret; // Actual Size
|
||
|
|
|
||
|
|
// skip the string in the buffer, including the terminator
|
||
|
|
pBuffer += (ret * 2);
|
||
|
|
}
|
||
|
|
else
|
||
|
|
RpcRaiseException( DV_E_CLIPFORMAT );
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
// sending the number itself
|
||
|
|
|
||
|
|
*(PULONG_LV_CAST pBuffer)++ = WDT_HANDLE_MARKER;
|
||
|
|
ALIGN( pBuffer, 7 );
|
||
|
|
*(PULONG_LV_CAST pBuffer)++ = (ulong) *pObject;
|
||
|
|
}
|
||
|
|
|
||
|
|
return( pBuffer );
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
//+-------------------------------------------------------------------------
|
||
|
|
//
|
||
|
|
// Function: CLIPFORMAT_UserUnmarshal64
|
||
|
|
//
|
||
|
|
// Synopsis: Unmarshals a CLIPFORMAT; registers if needed.
|
||
|
|
//
|
||
|
|
// Derivation: A union of a long and a string.
|
||
|
|
//
|
||
|
|
// history: Dec-00 JohnDoty Created from 32bit function
|
||
|
|
//
|
||
|
|
//--------------------------------------------------------------------------
|
||
|
|
|
||
|
|
unsigned char __RPC_FAR * __RPC_USER
|
||
|
|
CLIPFORMAT_UserUnmarshal64 (
|
||
|
|
unsigned long * pFlags,
|
||
|
|
unsigned char * pBuffer,
|
||
|
|
CLIPFORMAT * pObject )
|
||
|
|
{
|
||
|
|
ulong UnionDisc;
|
||
|
|
hyper cf;
|
||
|
|
|
||
|
|
// Get the buffer size and the start of the buffer.
|
||
|
|
CUserMarshalInfo MarshalInfo( pFlags, pBuffer );
|
||
|
|
CarefulBufferReader stream( pBuffer, MarshalInfo.GetBufferSize() );
|
||
|
|
|
||
|
|
stream.Align( 8 ); // Must align on 8, union rules.
|
||
|
|
UnionDisc = stream.ReadULONGNA(); // ...so no need to align on 4 here...
|
||
|
|
stream.Align( 8 ); // ...but must explicitly align to 8 here again.
|
||
|
|
|
||
|
|
if ( WDT_DATA_MARKER == UnionDisc )
|
||
|
|
{
|
||
|
|
cf = stream.ReadHYPERNA(); // Just aligned 8, so don't align again.
|
||
|
|
|
||
|
|
// CLIPFORMAT value must be in valid range.
|
||
|
|
if ( cf < 0xc000 || cf > 0xffff )
|
||
|
|
RAISE_RPC_EXCEPTION( RPC_X_BAD_STUB_DATA );
|
||
|
|
|
||
|
|
// Get the string header from the buffer and subtract the string
|
||
|
|
// header from the BufferSize.
|
||
|
|
hyper ConfSize = stream.ReadHYPERNA();
|
||
|
|
hyper Offset = stream.ReadHYPERNA();
|
||
|
|
hyper ActualSize = stream.ReadHYPERNA();
|
||
|
|
|
||
|
|
// Verify the header: Offset must always be zero, length must match
|
||
|
|
// size, and size can't be zero since that would mean no NULL
|
||
|
|
// terminator.
|
||
|
|
if ( 0 != Offset || ActualSize != ConfSize || 0 == ActualSize )
|
||
|
|
RAISE_RPC_EXCEPTION( RPC_X_INVALID_BOUND );
|
||
|
|
|
||
|
|
// Check for EOB before accessing string.
|
||
|
|
stream.CheckSize((unsigned long)(ActualSize * sizeof(WCHAR)));
|
||
|
|
|
||
|
|
// Last two bytes of the buffer must be unicode terminator
|
||
|
|
WCHAR *pCheck = (WCHAR *)stream.GetBuffer();
|
||
|
|
if ( pCheck[ActualSize-1] != 0x0000 )
|
||
|
|
RAISE_RPC_EXCEPTION( RPC_X_INVALID_BOUND );
|
||
|
|
|
||
|
|
// Must be only 1 unicode terminator.
|
||
|
|
if ( (ULONG)(lstrlenW( pCheck ) + 1) != ActualSize )
|
||
|
|
RAISE_RPC_EXCEPTION( RPC_X_INVALID_BOUND );
|
||
|
|
|
||
|
|
// Register the clipboard format.
|
||
|
|
cf = RegisterClipboardFormat( pCheck );
|
||
|
|
if ( cf == 0 )
|
||
|
|
RAISE_RPC_EXCEPTION( DV_E_CLIPFORMAT );
|
||
|
|
|
||
|
|
// Advance buffer pointer past string.
|
||
|
|
stream.Advance((unsigned long)(ActualSize * sizeof(WCHAR)));
|
||
|
|
}
|
||
|
|
else if ( WDT_HANDLE_MARKER == UnionDisc )
|
||
|
|
{
|
||
|
|
cf = (hyper)stream.ReadULONGNA(); // Just aligned on 8...
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
RAISE_RPC_EXCEPTION( RPC_S_INVALID_TAG );
|
||
|
|
}
|
||
|
|
|
||
|
|
*pObject = (CLIPFORMAT) cf;
|
||
|
|
|
||
|
|
return( stream.GetBuffer() );
|
||
|
|
}
|
||
|
|
|
||
|
|
//+-------------------------------------------------------------------------
|
||
|
|
//
|
||
|
|
// Function: CLIPFORMAT_UserFree64
|
||
|
|
//
|
||
|
|
// Synopsis: Frees remnants of CLIPFORMAT.
|
||
|
|
//
|
||
|
|
// Derivation: A union of a long and a string.
|
||
|
|
//
|
||
|
|
// history: Dec-00 JohnDoty Created from 32bit function
|
||
|
|
//
|
||
|
|
//--------------------------------------------------------------------------
|
||
|
|
|
||
|
|
void __RPC_USER
|
||
|
|
CLIPFORMAT_UserFree64 (
|
||
|
|
unsigned long * pFlags,
|
||
|
|
CLIPFORMAT * pObject )
|
||
|
|
{
|
||
|
|
// Nothing to free, as nothing gets allocated when we unmarshal.
|
||
|
|
}
|
||
|
|
|
||
|
|
#endif // win64
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|