1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
 * This file is part of the LibreOffice project.
 *
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/.
 *
 * This file incorporates work covered by the following license notice:
 *
 *   Licensed to the Apache Software Foundation (ASF) under one or more
 *   contributor license agreements. See the NOTICE file distributed
 *   with this work for additional information regarding copyright
 *   ownership. The ASF licenses this file to you under the Apache
 *   License, Version 2.0 (the "License"); you may not use this file
 *   except in compliance with the License. You may obtain a copy of
 *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
 */

#include <string.h>

#include "FmtFilter.hxx"
#include <osl/diagnose.h>

#include <shobjidl.h>
#include <shlguid.h>
#include <objidl.h>
#include <shellapi.h>

#include <string>
#include <sstream>
#include <vector>
#include <iomanip>

#include <systools/win32/comtools.hxx>

using namespace com::sun::star::uno;

#pragma pack(2)
struct METAFILEHEADER
{
    DWORD       key;
    short       hmf;
    SMALL_RECT  bbox;
    WORD        inch;
    DWORD       reserved;
    WORD        checksum;
};
#pragma pack()

// convert a windows metafile picture to a openoffice metafile picture

Sequence< sal_Int8 > WinMFPictToOOMFPict( Sequence< sal_Int8 >& aMetaFilePict )
{
    OSL_ASSERT( aMetaFilePict.getLength( ) == sizeof( METAFILEPICT ) );

    Sequence< sal_Int8 > mfpictStream;
    METAFILEPICT* pMFPict = reinterpret_cast< METAFILEPICT* >( aMetaFilePict.getArray( ) );
    HMETAFILE hMf = pMFPict->hMF;
    sal_uInt32 nCount = GetMetaFileBitsEx( hMf, 0, nullptr );

    if ( nCount > 0 )
    {
        mfpictStream.realloc( nCount + sizeof( METAFILEHEADER ) );

        METAFILEHEADER* pMFHeader = reinterpret_cast< METAFILEHEADER* >( mfpictStream.getArray( ) );
        SMALL_RECT aRect = { 0,
                             0,
                             static_cast< short >( pMFPict->xExt ),
                             static_cast< short >( pMFPict->yExt ) };
        USHORT nInch;

        switch( pMFPict->mm )
        {
        case MM_TEXT:
            nInch = 72;
            break;

        case MM_LOMETRIC:
            nInch = 100;
            break;

        case MM_HIMETRIC:
            nInch = 1000;
            break;

        case MM_LOENGLISH:
            nInch = 254;
            break;

        case MM_HIENGLISH:
        case MM_ISOTROPIC:
        case MM_ANISOTROPIC:
            nInch = 2540;
            break;

        case MM_TWIPS:
            nInch = 1440;
            break;

        default:
            nInch = 576;
        }

        pMFHeader->key      = 0x9AC6CDD7L;
        pMFHeader->hmf      = 0;
        pMFHeader->bbox     = aRect;
        pMFHeader->inch     = nInch;
        pMFHeader->reserved = 0;
        pMFHeader->checksum = 0;

        char* pMFBuff = reinterpret_cast< char* >( mfpictStream.getArray( ) );

        nCount = GetMetaFileBitsEx( pMFPict->hMF, nCount, pMFBuff + sizeof( METAFILEHEADER ) );
        OSL_ASSERT( nCount > 0 );
    }

    return mfpictStream;
}

// convert a windows enhanced metafile to a openoffice metafile

Sequence< sal_Int8 > WinENHMFPictToOOMFPict( HENHMETAFILE hEnhMetaFile )
{
    Sequence< sal_Int8 >    aRet;
    UINT                    nSize = 0;

    if( hEnhMetaFile &&
        ( ( nSize = GetEnhMetaFileBits( hEnhMetaFile, 0, nullptr ) ) != 0 ) )
    {
        aRet.realloc( nSize );

        if( GetEnhMetaFileBits( hEnhMetaFile, nSize, reinterpret_cast<unsigned char*>(aRet.getArray()) ) != nSize )
            aRet.realloc( 0 );
    }

    return aRet;
}

// convert a openoffice metafile picture to a windows metafile picture

HMETAFILEPICT OOMFPictToWinMFPict( Sequence< sal_Int8 > const & aOOMetaFilePict )<--- The function 'OOMFPictToWinMFPict' is never used.
{
    HMETAFILEPICT   hPict = nullptr;
    HMETAFILE       hMtf = SetMetaFileBitsEx( aOOMetaFilePict.getLength(), reinterpret_cast<unsigned char const *>(aOOMetaFilePict.getConstArray()) );

    if( hMtf )
    {
        METAFILEPICT* pPict = static_cast<METAFILEPICT*>(GlobalLock( hPict = GlobalAlloc( GHND, sizeof( METAFILEPICT ) ) ));

        pPict->mm = 8;
        pPict->xExt = 0;
        pPict->yExt = 0;
        pPict->hMF = hMtf;

        GlobalUnlock( hPict );
    }

    return hPict;
}

// convert a openoffice metafile picture to a windows enhanced metafile picture

HENHMETAFILE OOMFPictToWinENHMFPict( Sequence< sal_Int8 > const & aOOMetaFilePict )<--- The function 'OOMFPictToWinENHMFPict' is never used.
{
    HENHMETAFILE hEnhMtf = SetEnhMetaFileBits( aOOMetaFilePict.getLength(), reinterpret_cast<unsigned char const *>(aOOMetaFilePict.getConstArray()) );

    return hEnhMtf;
}

// convert a windows device independent bitmap into a openoffice bitmap

Sequence< sal_Int8 > WinDIBToOOBMP( const Sequence< sal_Int8 >& aWinDIB )
{
    OSL_ENSURE(sal_uInt32(aWinDIB.getLength()) > sizeof(BITMAPINFOHEADER), "CF_DIBV5/CF_DIB too small (!)");
    Sequence< sal_Int8 > ooBmpStream;

    ooBmpStream.realloc(aWinDIB.getLength( ) + sizeof(BITMAPFILEHEADER));
    const BITMAPINFOHEADER* pBmpInfoHdr = reinterpret_cast< const BITMAPINFOHEADER* >(aWinDIB.getConstArray());
    BITMAPFILEHEADER* pBmpFileHdr = reinterpret_cast< BITMAPFILEHEADER* >(ooBmpStream.getArray());
    const DWORD nSizeInfoOrV5(pBmpInfoHdr->biSize > sizeof(BITMAPINFOHEADER) ? sizeof(BITMAPV5HEADER) : sizeof(BITMAPINFOHEADER));
    DWORD nOffset(sizeof(BITMAPFILEHEADER) + nSizeInfoOrV5);

    memcpy(pBmpFileHdr + 1, pBmpInfoHdr, aWinDIB.getLength());

    if(pBmpInfoHdr->biBitCount <= 8)
    {
        nOffset += (pBmpInfoHdr->biClrUsed ? pBmpInfoHdr->biClrUsed : (1 << pBmpInfoHdr->biBitCount)) << 2;
    }
    else if((BI_BITFIELDS == pBmpInfoHdr->biCompression ) && ((16 == pBmpInfoHdr->biBitCount ) || (32 == pBmpInfoHdr->biBitCount )))
    {
        nOffset += 12;
    }

    pBmpFileHdr->bfType = ('M' << 8) | 'B';
    pBmpFileHdr->bfSize = 0; // maybe: nMemSize + sizeof(BITMAPFILEHEADER)
    pBmpFileHdr->bfReserved1 = 0;
    pBmpFileHdr->bfReserved2 = 0;
    pBmpFileHdr->bfOffBits = nOffset;

    return ooBmpStream;
}

// convert a openoffice bitmap into a windows device independent bitmap

Sequence< sal_Int8 > OOBmpToWinDIB( Sequence< sal_Int8 >& aOOBmp )<--- The function 'OOBmpToWinDIB' is never used.
{
    Sequence< sal_Int8 > winDIBStream( aOOBmp.getLength( ) - sizeof( BITMAPFILEHEADER ) );

    memcpy( winDIBStream.getArray( ),
                    aOOBmp.getArray( )  + sizeof( BITMAPFILEHEADER ),
                    aOOBmp.getLength( ) - sizeof( BITMAPFILEHEADER ) );

    return winDIBStream;
}

static std::string GetHtmlFormatHeader(size_t startHtml, size_t endHtml, size_t startFragment, size_t endFragment)
{
    std::ostringstream htmlHeader;
    htmlHeader << "Version:1.0" << '\r' << '\n';
    htmlHeader << "StartHTML:" << std::setw(10) << std::setfill('0') << std::dec << startHtml << '\r' << '\n';
    htmlHeader << "EndHTML:" << std::setw(10) << std::setfill('0') << std::dec << endHtml << '\r' << '\n';
    htmlHeader << "StartFragment:" << std::setw(10) << std::setfill('0') << std::dec << startFragment << '\r' << '\n';
    htmlHeader << "EndFragment:" << std::setw(10) << std::setfill('0') << std::dec << endFragment << '\r' << '\n';
    return htmlHeader.str();
}

// the case of these tags has to match what we output in our filters
// both tags don't allow parameters
const std::string TAG_HTML = std::string("<html>");
const std::string TAG_END_HTML = std::string("</html>");

// The body tag may have parameters so we need to search for the
// closing '>' manually e.g. <body param> #92840#
const std::string TAG_BODY = std::string("<body");
const std::string TAG_END_BODY = std::string("</body");

Sequence<sal_Int8> TextHtmlToHTMLFormat(Sequence<sal_Int8> const & aTextHtml)<--- The function 'TextHtmlToHTMLFormat' is never used.
{
    OSL_ASSERT(aTextHtml.getLength() > 0);

    if (aTextHtml.getLength() <= 0)
        return Sequence<sal_Int8>();

    // fill the buffer with dummy values to calc the exact length
    std::string dummyHtmlHeader = GetHtmlFormatHeader(0, 0, 0, 0);
    size_t lHtmlFormatHeader = dummyHtmlHeader.length();

    std::string textHtml(
        reinterpret_cast<const sal_Char*>(aTextHtml.getConstArray()),
        reinterpret_cast<const sal_Char*>(aTextHtml.getConstArray()) + aTextHtml.getLength());

    std::string::size_type nStartHtml = textHtml.find(TAG_HTML) + lHtmlFormatHeader - 1; // we start one before '<HTML>' Word 2000 does also so
    std::string::size_type nEndHtml = textHtml.find(TAG_END_HTML) + lHtmlFormatHeader + TAG_END_HTML.length() + 1; // our SOffice 5.2 wants 2 behind </HTML>?

    // The body tag may have parameters so we need to search for the
    // closing '>' manually e.g. <BODY param> #92840#
    std::string::size_type nStartFragment = textHtml.find(">", textHtml.find(TAG_BODY)) + lHtmlFormatHeader + 1;
    std::string::size_type nEndFragment = textHtml.find(TAG_END_BODY) + lHtmlFormatHeader;

    std::string htmlFormat = GetHtmlFormatHeader(nStartHtml, nEndHtml, nStartFragment, nEndFragment);
    htmlFormat += textHtml;

    Sequence<sal_Int8> byteSequence(htmlFormat.length() + 1); // space the trailing '\0'
    memset(byteSequence.getArray(), 0, byteSequence.getLength());

    memcpy(
        static_cast<void*>(byteSequence.getArray()),
        static_cast<const void*>(htmlFormat.c_str()),
        htmlFormat.length());

    return byteSequence;
}

static std::wstring getFileExtension(const std::wstring& aFilename)
{
    std::wstring::size_type idx = aFilename.rfind(L".");
    if (idx != std::wstring::npos)
    {
        return std::wstring(aFilename, idx);
    }
    return std::wstring();
}

const std::wstring SHELL_LINK_FILE_EXTENSION = L".lnk";

static bool isShellLink(const std::wstring& aFilename)
{
    std::wstring ext = getFileExtension(aFilename);
    return (_wcsicmp(ext.c_str(), SHELL_LINK_FILE_EXTENSION.c_str()) == 0);
}

/** Resolve a Windows Shell Link (lnk) file. If a resolution
    is not possible simply return the provided name of the
    lnk file. */
static std::wstring getShellLinkTarget(const std::wstring& aLnkFile)
{
    OSL_ASSERT(isShellLink(aLnkFile));

    std::wstring target = aLnkFile;

    try
    {
        sal::systools::COMReference<IShellLinkW> pIShellLink;
        HRESULT hr = CoCreateInstance(
            CLSID_ShellLink, nullptr, CLSCTX_INPROC_SERVER, IID_IShellLinkW, reinterpret_cast<LPVOID*>(&pIShellLink));
        if (FAILED(hr))
            return target;

        sal::systools::COMReference<IPersistFile> pIPersistFile =
            pIShellLink.QueryInterface<IPersistFile>(IID_IPersistFile);

        hr = pIPersistFile->Load(aLnkFile.c_str(), STGM_READ);
        if (FAILED(hr))
            return target;

        hr = pIShellLink->Resolve(nullptr, SLR_UPDATE | SLR_NO_UI);
        if (FAILED(hr))
            return target;

        wchar_t pathW[MAX_PATH];
        WIN32_FIND_DATAW wfd;
        hr = pIShellLink->GetPath(pathW, MAX_PATH, &wfd, SLGP_RAWPATH);
        if (FAILED(hr))
            return target;

        target = pathW;
    }
    catch(sal::systools::ComError& ex)
    {
        OSL_FAIL(ex.what());
    }
    return target;
}

typedef Sequence<sal_Int8> ByteSequence_t;

/* Calculate the size required for turning a string list into
   a double '\0' terminated string buffer */
static size_t CalcSizeForStringListBuffer(const std::vector<std::wstring>& fileList)
{
    if ( fileList.empty() )
        return 0;

    size_t size = 1; // one for the very final '\0'
    for (auto const& elem : fileList)
    {
        size += elem.length() + 1; // length including terminating '\0'<--- Consider using std::accumulate algorithm instead of a raw loop.
    }
    return (size * sizeof(std::vector<std::wstring>::value_type::value_type));
}

static ByteSequence_t FileListToByteSequence(const std::vector<std::wstring>& fileList)
{
    ByteSequence_t bseq;
    size_t size = CalcSizeForStringListBuffer(fileList);

    if (size > 0)
    {
        bseq.realloc(size);
        wchar_t* p = reinterpret_cast<wchar_t*>(bseq.getArray());
        ZeroMemory(p, size);

        for (auto const& elem : fileList)
        {
            wcsncpy(p, elem.c_str(), elem.length());
            p += (elem.length() + 1);
        }
    }
    return bseq;
}

css::uno::Sequence<sal_Int8> CF_HDROPToFileList(HGLOBAL hGlobal)
{
    UINT nFiles = DragQueryFileW(static_cast<HDROP>(hGlobal), 0xFFFFFFFF, nullptr, 0);
    std::vector<std::wstring> files;

    for (UINT i = 0; i < nFiles; i++)
    {
        wchar_t buff[MAX_PATH];
        /*UINT size =*/ DragQueryFileW(static_cast<HDROP>(hGlobal), i, buff, MAX_PATH);
        std::wstring filename = buff;
        if (isShellLink(filename))
            filename = getShellLinkTarget(filename);
        files.push_back(filename);
    }
    return FileListToByteSequence(files);
}

// convert a windows bitmap handle into a openoffice bitmap

Sequence< sal_Int8 > WinBITMAPToOOBMP( HBITMAP aHBMP )
{
    Sequence< sal_Int8 > ooBmpStream;

    SIZE aBmpSize;
    if( GetBitmapDimensionEx( aHBMP, &aBmpSize ) )
    {
        // fill bitmap info header
        size_t nDataBytes = 4 * aBmpSize.cy * aBmpSize.cy;
        Sequence< sal_Int8 > aBitmapStream(
            sizeof(BITMAPINFO) +
            nDataBytes
            );
        PBITMAPINFOHEADER pBmp = reinterpret_cast<PBITMAPINFOHEADER>(aBitmapStream.getArray());
        pBmp->biSize = sizeof( BITMAPINFOHEADER );
        pBmp->biWidth  = aBmpSize.cx;
        pBmp->biHeight = aBmpSize.cy;
        pBmp->biPlanes = 1;
        pBmp->biBitCount = 32;
        pBmp->biCompression = BI_RGB;
        pBmp->biSizeImage = static_cast<DWORD>(nDataBytes);
        pBmp->biXPelsPerMeter = 1000;
        pBmp->biYPelsPerMeter = 1000;
        pBmp->biClrUsed = 0;
        pBmp->biClrImportant = 0;
        if( GetDIBits( nullptr, // DC, 0 is a default GC, basically that of the desktop
                       aHBMP,
                       0, aBmpSize.cy,
                       aBitmapStream.getArray() + sizeof(BITMAPINFO),
                       reinterpret_cast<LPBITMAPINFO>(pBmp),
                       DIB_RGB_COLORS ) )
        {
            ooBmpStream = WinDIBToOOBMP( aBitmapStream );
        }
    }

    return ooBmpStream;
}

/* vim:set shiftwidth=4 softtabstop=4 expandtab: */