windows-nt/Source/XPSP1/NT/termsrv/reskit/smc/tclient/lib/clputil.c

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2020-09-26 03:20:57 -05:00
/*++
* File name:
*
* Contents:
* Clipboard functions
*
* Copyright (C) 1998-1999 Microsoft Corp.
--*/
#include <windows.h>
#include <stdio.h>
#include <stdlib.h>
#include <io.h>
#include <fcntl.h>
#include <sys/stat.h>
#ifdef _CLPUTIL
enum {ERROR_MESSAGE = 0, WARNING_MESSAGE, INFO_MESSAGE, ALIVE_MESSAGE};
#define TRACE(_x_) LocalPrintMessage _x_
#else // !_CLPUTIL
#include "protocol.h"
/*
* Externals
*/
extern void (__cdecl *g_pfnPrintMessage) (INT, LPCSTR, ...);
#define TRACE(_x_) if (g_pfnPrintMessage) {\
g_pfnPrintMessage(INFO_MESSAGE, "Worker:%d ", GetCurrentThreadId());\
g_pfnPrintMessage _x_; }
#endif // !_CLPUTIL
typedef struct _CLIPBOARDFORMATS {
UINT uiFormat;
LPCSTR szFormat;
} CLIPBOARDFORMATS, *PCLIPBOARDFORMATS;
const CLIPBOARDFORMATS KnownFormats[] =
{
{CF_TEXT, "Text"},
{CF_BITMAP, "Bitmap"},
{CF_METAFILEPICT, "MetaFile"},
{CF_SYLK, "Sylk"},
{CF_DIF, "DIF"},
{CF_TIFF, "TIFF"},
{CF_OEMTEXT, "OEMText"},
{CF_DIB, "DIB"},
{CF_PALETTE, "Palette"},
{CF_PENDATA, "PenData"},
{CF_RIFF, "Riff"},
{CF_WAVE, "Wave"},
{CF_UNICODETEXT,"Unicode"},
{CF_ENHMETAFILE,"ENHMetafile"},
{CF_HDROP, "HDROP"},
{CF_LOCALE, "Locale"},
{CF_DIBV5, "DIBV5"}
};
typedef struct {
UINT32 mm;
UINT32 xExt;
UINT32 yExt;
} CLIPBOARD_MFPICT, *PCLIPBOARD_MFPICT;
/*
* Clipboard functions definitions
*/
VOID
Clp_ListAllFormats(VOID);
//VOID
//Clp_ListAllAvailableFormats(VOID);
UINT
Clp_GetClipboardFormat(CHAR *szFormatLookup);
VOID
Clp_PutIntoClipboard(CHAR *g_szFileName);
VOID
Clp_GetClipboardData(
UINT format,
HGLOBAL hClipData,
INT *pnClipDataSize,
HGLOBAL *phNewData);
BOOL
Clp_SetClipboardData(
UINT formatID,
HGLOBAL hClipData,
INT nClipDataSize,
BOOL *pbFreeHandle);
HGLOBAL
Clp_GetMFData(HANDLE hData,
PUINT pDataLen);
HGLOBAL
Clp_SetMFData(UINT dataLen,
PVOID pData);
VOID
_cdecl LocalPrintMessage(INT errlevel, CHAR *format, ...);
VOID
Clp_ListAllFormats(VOID)
{
UINT format = 0;
CHAR szFormatName[_MAX_PATH];
while ((format = EnumClipboardFormats(format)))
{
*szFormatName = 0;
GetClipboardFormatName(format, szFormatName, _MAX_PATH);
if (!(*szFormatName))
// No format, check for known format
{
INT fmti, fmtnum;
fmtnum = sizeof(KnownFormats)/sizeof(KnownFormats[0]);
for (fmti = 0;
KnownFormats[fmti].uiFormat != format
&&
fmti < fmtnum;
fmti ++);
if (fmti < fmtnum)
strcpy(szFormatName, KnownFormats[fmti].szFormat);
}
if (*szFormatName)
{
TRACE((INFO_MESSAGE, "%s[%d(0x%X)]\n", szFormatName, format, format));
} else {
TRACE((ERROR_MESSAGE, "Can't find format name for: 0x%x\n", format));
}
}
}
/*
VOID
Clp_ListAllAvailableFormats(VOID)
{
UINT format = 0;
CHAR szFormatName[_MAX_PATH];
while ((format = EnumClipboardFormats(format)))
{
if (!IsClipboardFormatAvailable(format))
// Skip the unavalable formats
continue;
*szFormatName = 0;
GetClipboardFormatName(format, szFormatName, _MAX_PATH);
if (!(*szFormatName))
// No format, check for known format
{
INT fmti, fmtnum;
fmtnum = sizeof(KnownFormats)/sizeof(KnownFormats[0]);
for (fmti = 0;
KnownFormats[fmti].uiFormat != format
&&
fmti < fmtnum;
fmti ++);
if (fmti < fmtnum)
strcpy(szFormatName, KnownFormats[fmti].szFormat);
}
if (*szFormatName)
TRACE((INFO_MESSAGE, "%s\n", szFormatName));
else
TRACE((ERROR_MESSAGE, "Can't find format name for: 0x%x\n", format));
}
}
*/
UINT
Clp_GetClipboardFormat(CHAR *szFormatLookup)
// Returns the clipboard ID
{
UINT format = 0;
CHAR szFormatName[_MAX_PATH];
BOOL bFound = FALSE;
*szFormatName = 0;
while (!bFound && (format = EnumClipboardFormats(format)))
{
if (!IsClipboardFormatAvailable(format))
// Skip the unavalable formats
continue;
*szFormatName = 0;
GetClipboardFormatName(format, szFormatName, _MAX_PATH);
if (!(*szFormatName))
// No format, check for known format
{
INT fmti, fmtnum;
fmtnum = sizeof(KnownFormats)/sizeof(KnownFormats[0]);
for (fmti = 0;
KnownFormats[fmti].uiFormat != format
&&
fmti < fmtnum;
fmti ++);
if (fmti < fmtnum)
strcpy(szFormatName, KnownFormats[fmti].szFormat);
}
bFound = (_stricmp(szFormatName, szFormatLookup) == 0);
}
return format;
}
VOID
Clp_PutIntoClipboard(CHAR *szFileName)
{
INT hFile = -1;
LONG clplength = 0;
UINT uiFormat = 0;
HGLOBAL ghClipData = NULL;
PBYTE pClipData = NULL;
BOOL bClipboardOpen = FALSE;
BOOL bFreeClipHandle = TRUE;
hFile = _open(szFileName, _O_RDONLY|_O_BINARY);
if (hFile == -1)
{
TRACE((ERROR_MESSAGE, "Error opening file: %s. errno=%d\n", szFileName, errno));
goto exitpt;
}
clplength = _filelength(hFile) - sizeof(uiFormat);
if (_read(hFile, &uiFormat, sizeof(uiFormat)) != sizeof(uiFormat))
{
TRACE((ERROR_MESSAGE, "Error reading from file. errno=%d\n", errno));
goto exitpt;
}
ghClipData = GlobalAlloc(GMEM_MOVEABLE|GMEM_DDESHARE, clplength);
if (!ghClipData)
{
TRACE((ERROR_MESSAGE, "Can't allocate %d bytes\n", clplength));
goto exitpt;
}
pClipData = GlobalLock(ghClipData);
if (!pClipData)
{
TRACE((ERROR_MESSAGE, "Can't lock handle 0x%x\n", ghClipData));
goto exitpt;
}
if (_read(hFile, pClipData, clplength) != clplength)
{
TRACE((ERROR_MESSAGE, "Error reading from file. errno=%d\n", errno));
goto exitpt;
}
GlobalUnlock(ghClipData);
if (!OpenClipboard(NULL))
{
TRACE((ERROR_MESSAGE, "Can't open the clipboard. GetLastError=%d\n",
GetLastError()));
goto exitpt;
}
bClipboardOpen = TRUE;
// Empty the clipboard, so we'll have only one entry
EmptyClipboard();
if (!Clp_SetClipboardData(uiFormat, ghClipData, clplength, &bFreeClipHandle))
{
TRACE((ERROR_MESSAGE, "SetClipboardData failed.\n"));
} else {
TRACE((INFO_MESSAGE, "Clipboard is loaded successfuly. File: %s, %d bytes\n",
szFileName,
clplength));
}
exitpt:
// Do the cleanup
// Close the clipboard
if (bClipboardOpen)
CloseClipboard();
// Release the clipboard handle
if (pClipData)
GlobalUnlock(ghClipData);
if (ghClipData && bFreeClipHandle)
GlobalFree(ghClipData);
// Close the file
if (hFile != -1)
_close(hFile);
}
VOID
Clp_GetClipboardData(
UINT format,
HGLOBAL hClipData,
INT *pnClipDataSize,
HGLOBAL *phNewData)
{
HGLOBAL hData = hClipData;
DWORD dataLen = 0;
WORD numEntries;
DWORD dwEntries;
PVOID pData;
*phNewData = NULL;
*pnClipDataSize = 0;
if (format == CF_PALETTE)
{
/****************************************************************/
/* Find out how many entries there are in the palette and */
/* allocate enough memory to hold them all. */
/****************************************************************/
if (GetObject(hData, sizeof(numEntries), (LPSTR)&numEntries) == 0)
{
numEntries = 256;
}
dataLen = sizeof(LOGPALETTE) +
((numEntries - 1) * sizeof(PALETTEENTRY));
*phNewData = GlobalAlloc(GHND, dataLen);
if (*phNewData == 0)
{
TRACE((ERROR_MESSAGE, "Failed to get %d bytes for palette", dataLen));
goto exitpt;
}
else
{
/************************************************************/
/* now get the palette entries into the new buffer */
/************************************************************/
pData = GlobalLock(*phNewData);
dwEntries = (WORD)GetPaletteEntries((HPALETTE)hData,
0,
numEntries,
(PALETTEENTRY*)pData);
GlobalUnlock(*phNewData);
if (dwEntries == 0)
{
TRACE((ERROR_MESSAGE, "Failed to get any palette entries"));
goto exitpt;
}
dataLen = dwEntries * sizeof(PALETTEENTRY);
}
} else if (format == CF_METAFILEPICT)
{
*phNewData = Clp_GetMFData(hData, &dataLen);
if (!*phNewData)
{
TRACE((ERROR_MESSAGE, "Failed to set MF data"));
goto exitpt;
}
} else {
if (format == CF_DIB)
{
// Get the exact DIB size
BITMAPINFOHEADER *pBMI = GlobalLock(hData);
if (pBMI)
{
if (pBMI->biSizeImage)
dataLen = pBMI->biSize + pBMI->biSizeImage;
GlobalUnlock(hData);
}
}
/****************************************************************/
/* just get the length of the block */
/****************************************************************/
if (!dataLen)
dataLen = (DWORD)GlobalSize(hData);
}
*pnClipDataSize = dataLen;
exitpt:
;
}
BOOL
Clp_SetClipboardData(
UINT formatID,
HGLOBAL hClipData,
INT nClipDataSize,
BOOL *pbFreeHandle)
{
BOOL rv = FALSE;
PVOID pData = NULL;
HGLOBAL hData = NULL;
LOGPALETTE *pLogPalette = NULL;
UINT numEntries, memLen;
if (!pbFreeHandle)
goto exitpt;
*pbFreeHandle = TRUE;
if (formatID == CF_METAFILEPICT)
{
/********************************************************************/
/* We have to put a handle to the metafile on the clipboard - which */
/* means creating a metafile from the received data first */
/********************************************************************/
pData = GlobalLock(hClipData);
if (!pData)
{
TRACE((ERROR_MESSAGE, "Failed to lock buffer\n"));
goto exitpt;
}
hData = Clp_SetMFData(nClipDataSize, pData);
if (!hData)
{
TRACE((ERROR_MESSAGE, "Failed to set MF data\n"));
}
else if (SetClipboardData(formatID, hData) != hData)
{
TRACE((ERROR_MESSAGE, "SetClipboardData. GetLastError=%d\n", GetLastError()));
}
GlobalUnlock(hClipData);
} else if (formatID == CF_PALETTE)
{
/********************************************************************/
/* We have to put a handle to the palette on the clipboard - again */
/* this means creating one from the received data first */
/* */
/* Allocate memory for a LOGPALETTE structure large enough to hold */
/* all the PALETTE ENTRY structures, and fill it in. */
/********************************************************************/
numEntries = (nClipDataSize / sizeof(PALETTEENTRY));
memLen = (sizeof(LOGPALETTE) +
((numEntries - 1) * sizeof(PALETTEENTRY)));
pLogPalette = malloc(memLen);
if (!pLogPalette)
{
TRACE((ERROR_MESSAGE, "Failed to get %d bytes", memLen));
goto exitpt;
}
pLogPalette->palVersion = 0x300;
pLogPalette->palNumEntries = (WORD)numEntries;
/********************************************************************/
/* get a pointer to the data and copy it to the palette */
/********************************************************************/
pData = GlobalLock(hClipData);
if (pData == NULL)
{
TRACE((ERROR_MESSAGE, "Failed to lock buffer"));
goto exitpt;
}
memcpy(pLogPalette->palPalEntry, pData, nClipDataSize);
/********************************************************************/
/* unlock the buffer */
/********************************************************************/
GlobalUnlock(hClipData);
/********************************************************************/
/* now create a palette */
/********************************************************************/
hData = CreatePalette(pLogPalette);
if (!hData)
{
TRACE((ERROR_MESSAGE, "CreatePalette failed\n"));
goto exitpt;
}
/********************************************************************/
/* and set the palette handle to the Clipboard */
/********************************************************************/
if (SetClipboardData(formatID, hData) != hData)
{
TRACE((ERROR_MESSAGE, "SetClipboardData. GetLastError=%d\n", GetLastError()));
}
} else {
/****************************************************************/
/* Just set it onto the clipboard */
/****************************************************************/
if (SetClipboardData(formatID, hClipData) != hClipData)
{
TRACE((ERROR_MESSAGE, "SetClipboardData. GetLastError=%d, hClipData=0x%x\n", GetLastError(), hClipData));
goto exitpt;
}
// Only in this case we don't need to free the handle
*pbFreeHandle = FALSE;
}
rv = TRUE;
exitpt:
if (!pLogPalette)
{
free(pLogPalette);
}
return rv;
}
HGLOBAL Clp_GetMFData(HANDLE hData,
PUINT pDataLen)
{
UINT lenMFBits = 0;
BOOL rc = FALSE;
LPMETAFILEPICT pMFP = NULL;
HDC hMFDC = NULL;
HMETAFILE hMF = NULL;
HGLOBAL hMFBits = NULL;
HANDLE hNewData = NULL;
CHAR *pNewData = NULL;
PVOID pBits = NULL;
/************************************************************************/
/* Lock the memory to get a pointer to a METAFILEPICT header structure */
/* and create a METAFILEPICT DC. */
/************************************************************************/
pMFP = (LPMETAFILEPICT)GlobalLock(hData);
if (pMFP == NULL)
goto exitpt;
hMFDC = CreateMetaFile(NULL);
if (hMFDC == NULL)
goto exitpt;
/************************************************************************/
/* Copy the MFP by playing it into the DC and closing it. */
/************************************************************************/
if (!PlayMetaFile(hMFDC, pMFP->hMF))
{
CloseMetaFile(hMFDC);
goto exitpt;
}
hMF = CloseMetaFile(hMFDC);
if (hMF == NULL)
goto exitpt;
/************************************************************************/
/* Get the MF bits and determine how long they are. */
/************************************************************************/
#ifdef OS_WIN16
hMFBits = GetMetaFileBits(hMF);
lenMFBits = GlobalSize(hMFBits);
#else
lenMFBits = GetMetaFileBitsEx(hMF, 0, NULL);
#endif
if (lenMFBits == 0)
goto exitpt;
/************************************************************************/
/* Work out how much memory we need and get a buffer */
/************************************************************************/
*pDataLen = sizeof(CLIPBOARD_MFPICT) + lenMFBits;
hNewData = GlobalAlloc(GHND, *pDataLen);
if (hNewData == NULL)
goto exitpt;
pNewData = GlobalLock(hNewData);
/************************************************************************/
/* Copy the MF header and bits into the buffer. */
/************************************************************************/
((PCLIPBOARD_MFPICT)pNewData)->mm = pMFP->mm;
((PCLIPBOARD_MFPICT)pNewData)->xExt = pMFP->xExt;
((PCLIPBOARD_MFPICT)pNewData)->yExt = pMFP->yExt;
#ifdef OS_WIN16
pBits = GlobalLock(hMFBits);
memcpy((pNewData + sizeof(CLIPBOARD_MFPICT)),
pBits,
lenMFBits);
GlobalUnlock(hMFBits);
#else
lenMFBits = GetMetaFileBitsEx(hMF, lenMFBits,
(pNewData + sizeof(CLIPBOARD_MFPICT)));
if (lenMFBits == 0)
goto exitpt;
#endif
/************************************************************************/
/* all OK */
/************************************************************************/
rc = TRUE;
exitpt:
/************************************************************************/
/* Unlock any global mem. */
/************************************************************************/
if (pMFP)
{
GlobalUnlock(hData);
}
if (pNewData)
{
GlobalUnlock(hNewData);
}
/************************************************************************/
/* if things went wrong, then free the new data */
/************************************************************************/
if ((rc == FALSE) && (hNewData != NULL))
{
GlobalFree(hNewData);
hNewData = NULL;
}
return(hNewData);
}
HGLOBAL Clp_SetMFData(UINT dataLen,
PVOID pData)
{
BOOL rc = FALSE;
HGLOBAL hMFBits = NULL;
PVOID pMFMem = NULL;
HMETAFILE hMF = NULL;
HGLOBAL hMFPict = NULL;
LPMETAFILEPICT pMFPict = NULL;
/************************************************************************/
/* Allocate memory to hold the MF bits (we need the handle to pass to */
/* SetMetaFileBits). */
/************************************************************************/
hMFBits = GlobalAlloc(GHND, dataLen - sizeof(CLIPBOARD_MFPICT));
if (hMFBits == NULL)
goto exitpt;
/************************************************************************/
/* Lock the handle and copy in the MF header. */
/************************************************************************/
pMFMem = GlobalLock(hMFBits);
if (pMFMem == NULL)
goto exitpt;
memcpy(pMFMem,
(PVOID)((CHAR *)pData + sizeof(CLIPBOARD_MFPICT)),
dataLen - sizeof(CLIPBOARD_MFPICT) );
GlobalUnlock(hMFBits);
/************************************************************************/
/* Now use the copied MF bits to create the actual MF bits and get a */
/* handle to the MF. */
/************************************************************************/
#ifdef OS_WIN16
hMF = SetMetaFileBits(hMFBits);
#else
hMF = SetMetaFileBitsEx(dataLen - sizeof(CLIPBOARD_MFPICT), pMFMem);
#endif
if (hMF == NULL)
goto exitpt;
/************************************************************************/
/* Allocate a new METAFILEPICT structure, and use the data from the */
/* header. */
/************************************************************************/
hMFPict = GlobalAlloc(GHND, sizeof(METAFILEPICT));
pMFPict = (LPMETAFILEPICT)GlobalLock(hMFPict);
if (!pMFPict)
goto exitpt;
pMFPict->mm = (long)((PCLIPBOARD_MFPICT)pData)->mm;
pMFPict->xExt = (long)((PCLIPBOARD_MFPICT)pData)->xExt;
pMFPict->yExt = (long)((PCLIPBOARD_MFPICT)pData)->yExt;
pMFPict->hMF = hMF;
GlobalUnlock(hMFPict);
rc = TRUE;
exitpt:
/************************************************************************/
/* tidy up */
/************************************************************************/
if (!rc)
{
if (hMFPict)
{
GlobalFree(hMFPict);
}
if (hMFBits)
{
GlobalFree(hMFBits);
}
}
return(hMFPict);
}
BOOL
Clp_EmptyClipboard(VOID)
{
BOOL rv = FALSE;
if (OpenClipboard(NULL))
{
EmptyClipboard();
rv = TRUE;
CloseClipboard();
}
return rv;
}
BOOL
Clp_CheckEmptyClipboard(VOID)
{
BOOL rv = TRUE;
if (OpenClipboard(NULL))
{
if (EnumClipboardFormats(0))
// format is available, not empty
rv = FALSE;
CloseClipboard();
}
return rv;
}
// Checks for known format names and returns it's ID
UINT
_GetKnownClipboardFormatIDByName(LPCSTR szFormatName)
{
INT fmti, fmtnum;
UINT rv = 0;
fmtnum = sizeof(KnownFormats)/sizeof(KnownFormats[0]);
for (fmti = 0;
fmti < fmtnum
&&
_stricmp(szFormatName, KnownFormats[fmti].szFormat);
fmti ++)
;
if (fmti < fmtnum)
rv = KnownFormats[fmti].uiFormat;
return rv;
}
VOID
_cdecl LocalPrintMessage(INT errlevel, CHAR *format, ...)
{
CHAR szBuffer[256];
CHAR *type;
va_list arglist;
INT nchr;
va_start (arglist, format);
nchr = _vsnprintf (szBuffer, sizeof(szBuffer), format, arglist);
va_end (arglist);
switch(errlevel)
{
case INFO_MESSAGE: type = "INF"; break;
case ALIVE_MESSAGE: type = "ALV"; break;
case WARNING_MESSAGE: type = "WRN"; break;
case ERROR_MESSAGE: type = "ERR"; break;
default: type = "UNKNOWN";
}
printf("%s:%s", type, szBuffer);
}