1/* $Id: tif_win32.c,v 1.39 2011-12-22 17:07:57 bfriesen Exp $ */
2
3/*
4 * Copyright (c) 1988-1997 Sam Leffler
5 * Copyright (c) 1991-1997 Silicon Graphics, Inc.
6 *
7 * Permission to use, copy, modify, distribute, and sell this software and
8 * its documentation for any purpose is hereby granted without fee, provided
9 * that (i) the above copyright notices and this permission notice appear in
10 * all copies of the software and related documentation, and (ii) the names of
11 * Sam Leffler and Silicon Graphics may not be used in any advertising or
12 * publicity relating to the software without the specific, prior written
13 * permission of Sam Leffler and Silicon Graphics.
14 *
15 * THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND,
16 * EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY
17 * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
18 *
19 * IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR
20 * ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
21 * OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
22 * WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF
23 * LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
24 * OF THIS SOFTWARE.
25 */
26
27/*
28 * TIFF Library Win32-specific Routines.  Adapted from tif_unix.c 4/5/95 by
29 * Scott Wagner (wagner@itek.com), Itek Graphix, Rochester, NY USA
30 */
31#include "tiffiop.h"
32
33#include <windows.h>
34
35static tmsize_t
36_tiffReadProc(thandle_t fd, void* buf, tmsize_t size)
37{
38    /* tmsize_t is 64bit on 64bit systems, but the WinAPI ReadFile takes
39     * 32bit sizes, so we loop through the data in suitable 32bit sized
40     * chunks */
41    uint8* ma;
42    uint64 mb;
43    DWORD n;
44    DWORD o;
45    tmsize_t p;
46    ma=(uint8*)buf;
47    mb=size;
48    p=0;
49    while (mb>0)
50    {
51        n=0x80000000UL;
52        if ((uint64)n>mb)
53            n=(DWORD)mb;
54        if (!ReadFile(fd,(LPVOID)ma,n,&o,NULL))
55            return(0);
56        ma+=o;
57        mb-=o;
58        p+=o;
59        if (o!=n)
60            break;
61    }
62    return(p);
63}
64
65static tmsize_t
66_tiffWriteProc(thandle_t fd, void* buf, tmsize_t size)
67{
68    /* tmsize_t is 64bit on 64bit systems, but the WinAPI WriteFile takes
69     * 32bit sizes, so we loop through the data in suitable 32bit sized
70     * chunks */
71    uint8* ma;
72    uint64 mb;
73    DWORD n;
74    DWORD o;
75    tmsize_t p;
76    ma=(uint8*)buf;
77    mb=size;
78    p=0;
79    while (mb>0)
80    {
81        n=0x80000000UL;
82        if ((uint64)n>mb)
83            n=(DWORD)mb;
84        if (!WriteFile(fd,(LPVOID)ma,n,&o,NULL))
85            return(0);
86        ma+=o;
87        mb-=o;
88        p+=o;
89        if (o!=n)
90            break;
91    }
92    return(p);
93}
94
95static uint64
96_tiffSeekProc(thandle_t fd, uint64 off, int whence)
97{
98    LARGE_INTEGER offli;
99    DWORD dwMoveMethod;
100    offli.QuadPart = off;
101    switch(whence)
102    {
103        case SEEK_SET:
104            dwMoveMethod = FILE_BEGIN;
105            break;
106        case SEEK_CUR:
107            dwMoveMethod = FILE_CURRENT;
108            break;
109        case SEEK_END:
110            dwMoveMethod = FILE_END;
111            break;
112        default:
113            dwMoveMethod = FILE_BEGIN;
114            break;
115    }
116    offli.LowPart=SetFilePointer(fd,offli.LowPart,&offli.HighPart,dwMoveMethod);
117    if ((offli.LowPart==INVALID_SET_FILE_POINTER)&&(GetLastError()!=NO_ERROR))
118        offli.QuadPart=0;
119    return(offli.QuadPart);
120}
121
122static int
123_tiffCloseProc(thandle_t fd)
124{
125    return (CloseHandle(fd) ? 0 : -1);
126}
127
128static uint64
129_tiffSizeProc(thandle_t fd)
130{
131    ULARGE_INTEGER m;
132    m.LowPart=GetFileSize(fd,&m.HighPart);
133    return(m.QuadPart);
134}
135
136static int
137_tiffDummyMapProc(thandle_t fd, void** pbase, toff_t* psize)
138{
139    (void) fd;
140    (void) pbase;
141    (void) psize;
142    return (0);
143}
144
145/*
146 * From "Hermann Josef Hill" <lhill@rhein-zeitung.de>:
147 *
148 * Windows uses both a handle and a pointer for file mapping,
149 * but according to the SDK documentation and Richter's book
150 * "Advanced Windows Programming" it is safe to free the handle
151 * after obtaining the file mapping pointer
152 *
153 * This removes a nasty OS dependency and cures a problem
154 * with Visual C++ 5.0
155 */
156static int
157_tiffMapProc(thandle_t fd, void** pbase, toff_t* psize)
158{
159    uint64 size;
160    tmsize_t sizem;
161    HANDLE hMapFile;
162
163    size = _tiffSizeProc(fd);
164    sizem = (tmsize_t)size;
165    if ((uint64)sizem!=size)
166        return (0);
167
168    /* By passing in 0 for the maximum file size, it specifies that we
169       create a file mapping object for the full file size. */
170    hMapFile = CreateFileMapping(fd, NULL, PAGE_READONLY, 0, 0, NULL);
171    if (hMapFile == NULL)
172        return (0);
173    *pbase = MapViewOfFile(hMapFile, FILE_MAP_READ, 0, 0, 0);
174    CloseHandle(hMapFile);
175    if (*pbase == NULL)
176        return (0);
177    *psize = size;
178    return(1);
179}
180
181static void
182_tiffDummyUnmapProc(thandle_t fd, void* base, toff_t size)
183{
184    (void) fd;
185    (void) base;
186    (void) size;
187}
188
189static void
190_tiffUnmapProc(thandle_t fd, void* base, toff_t size)
191{
192    (void) fd;
193    (void) size;
194    UnmapViewOfFile(base);
195}
196
197/*
198 * Open a TIFF file descriptor for read/writing.
199 * Note that TIFFFdOpen and TIFFOpen recognise the character 'u' in the mode
200 * string, which forces the file to be opened unmapped.
201 */
202TIFF*
203TIFFFdOpen(int ifd, const char* name, const char* mode)
204{
205    TIFF* tif;
206    int fSuppressMap;
207    int m;
208    fSuppressMap=0;
209    for (m=0; mode[m]!=0; m++)
210    {
211        if (mode[m]=='u')
212        {
213            fSuppressMap=1;
214            break;
215        }
216    }
217    tif = TIFFClientOpen(name, mode, (thandle_t)ifd,
218            _tiffReadProc, _tiffWriteProc,
219            _tiffSeekProc, _tiffCloseProc, _tiffSizeProc,
220            fSuppressMap ? _tiffDummyMapProc : _tiffMapProc,
221            fSuppressMap ? _tiffDummyUnmapProc : _tiffUnmapProc);
222    if (tif)
223        tif->tif_fd = ifd;
224    return (tif);
225}
226
227#ifndef _WIN32_WCE
228
229/*
230 * Open a TIFF file for read/writing.
231 */
232TIFF*
233TIFFOpen(const char* name, const char* mode)
234{
235    static const char module[] = "TIFFOpen";
236    thandle_t fd;
237    int m;
238    DWORD dwMode;
239    TIFF* tif;
240
241    m = _TIFFgetMode(mode, module);
242
243    switch(m) {
244        case O_RDONLY:			dwMode = OPEN_EXISTING; break;
245        case O_RDWR:			dwMode = OPEN_ALWAYS;   break;
246        case O_RDWR|O_CREAT:		dwMode = OPEN_ALWAYS;   break;
247        case O_RDWR|O_TRUNC:		dwMode = CREATE_ALWAYS; break;
248        case O_RDWR|O_CREAT|O_TRUNC:	dwMode = CREATE_ALWAYS; break;
249        default:			return ((TIFF*)0);
250    }
251
252    fd = (thandle_t)CreateFileA(name,
253        (m == O_RDONLY)?GENERIC_READ:(GENERIC_READ | GENERIC_WRITE),
254        FILE_SHARE_READ | FILE_SHARE_WRITE, NULL, dwMode,
255        (m == O_RDONLY)?FILE_ATTRIBUTE_READONLY:FILE_ATTRIBUTE_NORMAL,
256        NULL);
257    if (fd == INVALID_HANDLE_VALUE) {
258        TIFFErrorExt(0, module, "%s: Cannot open", name);
259        return ((TIFF *)0);
260    }
261
262    tif = TIFFFdOpen((int)fd, name, mode);
263    if(!tif)
264        CloseHandle(fd);
265    return tif;
266}
267
268/*
269 * Open a TIFF file with a Unicode filename, for read/writing.
270 */
271TIFF*
272TIFFOpenW(const wchar_t* name, const char* mode)
273{
274    static const char module[] = "TIFFOpenW";
275    thandle_t fd;
276    int m;
277    DWORD dwMode;
278    int mbsize;
279    char *mbname;
280    TIFF *tif;
281
282    m = _TIFFgetMode(mode, module);
283
284    switch(m) {
285        case O_RDONLY:			dwMode = OPEN_EXISTING; break;
286        case O_RDWR:			dwMode = OPEN_ALWAYS;   break;
287        case O_RDWR|O_CREAT:		dwMode = OPEN_ALWAYS;   break;
288        case O_RDWR|O_TRUNC:		dwMode = CREATE_ALWAYS; break;
289        case O_RDWR|O_CREAT|O_TRUNC:	dwMode = CREATE_ALWAYS; break;
290        default:			return ((TIFF*)0);
291    }
292
293    fd = (thandle_t)CreateFileW(name,
294        (m == O_RDONLY)?GENERIC_READ:(GENERIC_READ|GENERIC_WRITE),
295        FILE_SHARE_READ | FILE_SHARE_WRITE, NULL, dwMode,
296        (m == O_RDONLY)?FILE_ATTRIBUTE_READONLY:FILE_ATTRIBUTE_NORMAL,
297        NULL);
298    if (fd == INVALID_HANDLE_VALUE) {
299        TIFFErrorExt(0, module, "%S: Cannot open", name);
300        return ((TIFF *)0);
301    }
302
303    mbname = NULL;
304    mbsize = WideCharToMultiByte(CP_ACP, 0, name, -1, NULL, 0, NULL, NULL);
305    if (mbsize > 0) {
306        mbname = (char *)_TIFFmalloc(mbsize);
307        if (!mbname) {
308            TIFFErrorExt(0, module,
309            "Can't allocate space for filename conversion buffer");
310            return ((TIFF*)0);
311        }
312
313        WideCharToMultiByte(CP_ACP, 0, name, -1, mbname, mbsize,
314                    NULL, NULL);
315    }
316
317    tif = TIFFFdOpen((int)fd,
318             (mbname != NULL) ? mbname : "<unknown>", mode);
319    if(!tif)
320        CloseHandle(fd);
321
322    _TIFFfree(mbname);
323
324    return tif;
325}
326
327#endif /* ndef _WIN32_WCE */
328
329void*
330_TIFFmalloc(tmsize_t s)
331{
332    return (malloc((size_t) s));
333}
334
335void
336_TIFFfree(void* p)
337{
338    free(p);
339}
340
341void*
342_TIFFrealloc(void* p, tmsize_t s)
343{
344    return (realloc(p, (size_t) s));
345}
346
347void
348_TIFFmemset(void* p, int v, tmsize_t c)
349{
350    memset(p, v, (size_t) c);
351}
352
353void
354_TIFFmemcpy(void* d, const void* s, tmsize_t c)
355{
356    memcpy(d, s, (size_t) c);
357}
358
359int
360_TIFFmemcmp(const void* p1, const void* p2, tmsize_t c)
361{
362    return (memcmp(p1, p2, (size_t) c));
363}
364
365#ifndef _WIN32_WCE
366
367#if (_MSC_VER < 1500)
368#  define vsnprintf _vsnprintf
369#endif
370
371static void
372Win32WarningHandler(const char* module, const char* fmt, va_list ap)
373{
374#ifndef TIF_PLATFORM_CONSOLE
375    LPTSTR szTitle;
376    LPTSTR szTmp;
377    LPCTSTR szTitleText = "%s Warning";
378    LPCTSTR szDefaultModule = "LIBTIFF";
379    LPCTSTR szTmpModule = (module == NULL) ? szDefaultModule : module;
380        SIZE_T nBufSize = (strlen(szTmpModule) +
381                        strlen(szTitleText) + strlen(fmt) + 256)*sizeof(char);
382
383    if ((szTitle = (LPTSTR)LocalAlloc(LMEM_FIXED, nBufSize)) == NULL)
384        return;
385    sprintf(szTitle, szTitleText, szTmpModule);
386    szTmp = szTitle + (strlen(szTitle)+2)*sizeof(char);
387    vsnprintf(szTmp, nBufSize-(strlen(szTitle)+2)*sizeof(char), fmt, ap);
388    MessageBoxA(GetFocus(), szTmp, szTitle, MB_OK | MB_ICONINFORMATION);
389    LocalFree(szTitle);
390
391    return;
392#else
393    if (module != NULL)
394        fprintf(stderr, "%s: ", module);
395    fprintf(stderr, "Warning, ");
396    vfprintf(stderr, fmt, ap);
397    fprintf(stderr, ".\n");
398#endif
399}
400TIFFErrorHandler _TIFFwarningHandler = Win32WarningHandler;
401
402static void
403Win32ErrorHandler(const char* module, const char* fmt, va_list ap)
404{
405#ifndef TIF_PLATFORM_CONSOLE
406    LPTSTR szTitle;
407    LPTSTR szTmp;
408    LPCTSTR szTitleText = "%s Error";
409    LPCTSTR szDefaultModule = "LIBTIFF";
410    LPCTSTR szTmpModule = (module == NULL) ? szDefaultModule : module;
411        SIZE_T nBufSize = (strlen(szTmpModule) +
412                        strlen(szTitleText) + strlen(fmt) + 256)*sizeof(char);
413
414    if ((szTitle = (LPTSTR)LocalAlloc(LMEM_FIXED, nBufSize)) == NULL)
415        return;
416    sprintf(szTitle, szTitleText, szTmpModule);
417    szTmp = szTitle + (strlen(szTitle)+2)*sizeof(char);
418    vsnprintf(szTmp, nBufSize-(strlen(szTitle)+2)*sizeof(char), fmt, ap);
419    MessageBoxA(GetFocus(), szTmp, szTitle, MB_OK | MB_ICONEXCLAMATION);
420    LocalFree(szTitle);
421    return;
422#else
423    if (module != NULL)
424        fprintf(stderr, "%s: ", module);
425    vfprintf(stderr, fmt, ap);
426    fprintf(stderr, ".\n");
427#endif
428}
429TIFFErrorHandler _TIFFerrorHandler = Win32ErrorHandler;
430
431#endif /* ndef _WIN32_WCE */
432
433/* vim: set ts=8 sts=8 sw=8 noet: */
434/*
435 * Local Variables:
436 * mode: c
437 * c-basic-offset: 8
438 * fill-column: 78
439 * End:
440 */
441