1 /*
2 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
3 % %
4 % %
5 % %
6 % X X TTTTT RRRR N N %
7 % X X T R R NN N %
8 % X T RRRR N N N %
9 % X X T R R N NN %
10 % X X T R R N N %
11 % %
12 % %
13 % ImageMagickObject BLOB Interface. %
14 % %
15 % Software Design %
16 % William Radcliffe %
17 % May 2001 %
18 % %
19 % %
20 % Copyright 1999-2019 ImageMagick Studio LLC, a non-profit organization %
21 % dedicated to making software imaging solutions freely available. %
22 % %
23 % You may not use this file except in compliance with the License. You may %
24 % obtain a copy of the License at %
25 % %
26 % https://imagemagick.org/script/license.php %
27 % %
28 % Unless required by applicable law or agreed to in writing, software %
29 % distributed under the License is distributed on an "AS IS" BASIS, %
30 % WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. %
31 % See the License for the specific language governing permissions and %
32 % limitations under the License. %
33 % %
34 % %
35 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
36 %
37 % This coder is a kind of backdoor used by the COM object that allows it to %
38 % pass blobs back and forth using the coder interface. It simply encodes and %
39 % decodes the filename as a comma delimited string and extracts the info it %
40 % needs. %
41 %
42 %
43 */
44
45 /*
46 Include declarations.
47 */
48 #include "MagickCore/studio.h"
49 #include "MagickCore/blob.h"
50 #include "MagickCore/blob-private.h"
51 #include "MagickCore/constitute.h"
52 #include "MagickCore/delegate.h"
53 #include "MagickCore/exception.h"
54 #include "MagickCore/exception-private.h"
55 #include "MagickCore/image.h"
56 #include "MagickCore/image-private.h"
57 #include "MagickCore/list.h"
58 #include "MagickCore/magick.h"
59 #include "MagickCore/magick-private.h"
60 #include "MagickCore/memory_.h"
61 #include "MagickCore/module.h"
62 #include "MagickCore/static.h"
63 #include "MagickCore/string_.h"
64 #if defined(MAGICKCORE_WINDOWS_SUPPORT) && !defined(__MINGW32__)
65 #define WIN32_LEAN_AND_MEAN
66 #define VC_EXTRALEAN
67 #include <windows.h>
68 #include <ole2.h>
69
70 /*
71 Forward declarations.
72 */
73 static MagickBooleanType
74 WriteXTRNImage(const ImageInfo *,Image *,ExceptionInfo *exception);
75 #endif
76
77 /*
78 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
79 % %
80 % %
81 % %
82 % R e a d X T R N I m a g e %
83 % %
84 % %
85 % %
86 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
87 %
88 % ReadXTRNImage() reads a XTRN image file and returns it. It
89 % allocates the memory necessary for the new Image structure and returns a
90 % pointer to the new image.
91 %
92 % The format of the ReadXTRNImage method is:
93 %
94 % Image *ReadXTRNImage(const ImageInfo *image_info,
95 % ExceptionInfo *exception)
96 %
97 % A description of each parameter follows:
98 %
99 % o image_info: Specifies a pointer to an ImageInfo structure.
100 %
101 % o exception: return any errors or warnings in this structure.
102 %
103 */
104 #if defined(MAGICKCORE_WINDOWS_SUPPORT) && !defined(__MINGW32__)
ReadXTRNImage(const ImageInfo * image_info,ExceptionInfo * exception)105 static Image *ReadXTRNImage(const ImageInfo *image_info,
106 ExceptionInfo *exception)
107 {
108 char
109 *blob_data,
110 filename[MagickPathExtent];
111
112 HRESULT
113 hr;
114
115 Image
116 *image;
117
118 ImageInfo
119 *clone_info;
120
121 long
122 lBoundl,
123 lBoundu;
124
125 SAFEARRAY
126 *pSafeArray;
127
128 size_t
129 blob_length;
130
131 void
132 *param1;
133
134 param1=(void *) NULL;
135 image=(Image *) NULL;
136 clone_info=CloneImageInfo(image_info);
137 if (clone_info->filename == NULL)
138 {
139 clone_info=DestroyImageInfo(clone_info);
140 ThrowReaderException(FileOpenWarning,"No filename specified");
141 }
142 *filename='\0';
143 (void) sscanf(clone_info->filename,"%p,%2048s",¶m1,filename);
144 hr=S_OK;
145 pSafeArray=(SAFEARRAY *) param1;
146 if (pSafeArray)
147 {
148 hr=SafeArrayGetLBound(pSafeArray,1,&lBoundl);
149 if (SUCCEEDED(hr))
150 {
151 hr=SafeArrayGetUBound(pSafeArray,1,&lBoundu);
152 if (SUCCEEDED(hr))
153 {
154 blob_length=lBoundu-lBoundl+1;
155 hr=SafeArrayAccessData(pSafeArray,(void**) &blob_data);
156 if (SUCCEEDED(hr))
157 {
158 *clone_info->filename='\0';
159 *clone_info->magick='\0';
160 if (*filename != '\0')
161 (void) CopyMagickString(clone_info->filename,filename,
162 MagickPathExtent);
163 image=BlobToImage(clone_info,blob_data,blob_length,
164 exception);
165 hr=SafeArrayUnaccessData(pSafeArray);
166 CatchException(exception);
167 }
168 }
169 }
170 }
171 clone_info=DestroyImageInfo(clone_info);
172 return(image);
173 }
174 #endif
175
176 /*
177 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
178 % %
179 % %
180 % %
181 % R e g i s t e r X T R N I m a g e %
182 % %
183 % %
184 % %
185 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
186 %
187 % RegisterXTRNImage() adds attributes for the XTRN image format to
188 % the list of supported formats. The attributes include the image format
189 % tag, a method to read and/or write the format, whether the format
190 % supports the saving of more than one frame to the same file or blob,
191 % whether the format supports native in-memory I/O, and a brief
192 % description of the format.
193 %
194 % The format of the RegisterXTRNImage method is:
195 %
196 % size_t RegisterXTRNImage(void)
197 %
198 */
RegisterXTRNImage(void)199 ModuleExport size_t RegisterXTRNImage(void)
200 {
201 MagickInfo
202 *entry;
203
204 entry=AcquireMagickInfo("XTRN","XTRNARRAY",
205 "External transfer via a smart array interface");
206 #if defined(MAGICKCORE_WINDOWS_SUPPORT) && !defined(__MINGW32__)
207 entry->decoder=ReadXTRNImage;
208 entry->encoder=WriteXTRNImage;
209 #endif
210 entry->flags^=CoderAdjoinFlag;
211 entry->flags|=CoderStealthFlag;
212 RegisterMagickInfo(entry);
213 return(MagickImageCoderSignature);
214 }
215
216 /*
217 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
218 % %
219 % %
220 % %
221 % U n r e g i s t e r X T R N I m a g e %
222 % %
223 % %
224 % %
225 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
226 %
227 % UnregisterXTRNImage() removes format registrations made by the
228 % XTRN module from the list of supported formats.
229 %
230 % The format of the UnregisterXTRNImage method is:
231 %
232 % UnregisterXTRNImage(void)
233 %
234 */
UnregisterXTRNImage(void)235 ModuleExport void UnregisterXTRNImage(void)
236 {
237 UnregisterMagickInfo("XTRNARRAY");
238 }
239
240 /*
241 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
242 % %
243 % %
244 % %
245 % W r i t e X T R N I m a g e %
246 % %
247 % %
248 % %
249 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
250 %
251 % WriteXTRNImage() writes an image in the XTRN encoded image format.
252 % We use GIF because it is the only format that is compressed without
253 % requiring additional optional delegates (TIFF, ZIP, etc).
254 %
255 % The format of the WriteXTRNImage method is:
256 %
257 % MagickBooleanType WriteXTRNImage(const ImageInfo *image_info,
258 % Image *image,ExceptionInfo *exception)
259 %
260 % A description of each parameter follows.
261 %
262 % o image_info: Specifies a pointer to an ImageInfo structure.
263 %
264 % o image: A pointer to a Image structure.
265 %
266 % o exception: return any errors or warnings in this structure.
267 %
268 */
269
270 #if defined(MAGICKCORE_WINDOWS_SUPPORT) && !defined(__MINGW32__)
SafeArrayFifo(const Image * image,const void * data,const size_t length)271 static size_t SafeArrayFifo(const Image *image,const void *data,
272 const size_t length)
273 {
274 SAFEARRAYBOUND NewArrayBounds[1]; /* 1 Dimension */
275 size_t tlen=length;
276 SAFEARRAY *pSafeArray = (SAFEARRAY *)image->client_data;
277 if (pSafeArray != NULL)
278 {
279 long lBoundl, lBoundu, lCount;
280 HRESULT hr = S_OK;
281 /* First see how big the buffer currently is */
282 hr = SafeArrayGetLBound(pSafeArray, 1, &lBoundl);
283 if (FAILED(hr))
284 return MagickFalse;
285 hr = SafeArrayGetUBound(pSafeArray, 1, &lBoundu);
286 if (FAILED(hr))
287 return MagickFalse;
288 lCount = lBoundu - lBoundl + 1;
289
290 if (length>0)
291 {
292 unsigned char *pReturnBuffer = NULL;
293 NewArrayBounds[0].lLbound = 0; /* Start-Index 0 */
294 NewArrayBounds[0].cElements = (unsigned long) (length+lCount); /* # Elemente */
295 hr = SafeArrayRedim(pSafeArray, NewArrayBounds);
296 if (FAILED(hr))
297 return 0;
298 hr = SafeArrayAccessData(pSafeArray, (void**)&pReturnBuffer);
299 if( FAILED(hr) )
300 return 0;
301 (void) memcpy(pReturnBuffer+lCount,(unsigned char *) data,length);
302 hr=SafeArrayUnaccessData(pSafeArray);
303 if(FAILED(hr))
304 return 0;
305 }
306 else
307 {
308 /* Adjust the length of the buffer to fit */
309 }
310 }
311 return(tlen);
312 }
313
WriteXTRNImage(const ImageInfo * image_info,Image * image,ExceptionInfo * exception)314 static MagickBooleanType WriteXTRNImage(const ImageInfo *image_info,
315 Image *image,ExceptionInfo *exception)
316 {
317 char
318 filename[MagickPathExtent];
319
320 Image
321 *p;
322
323 ImageInfo
324 *clone_info;
325
326 int
327 scene;
328
329 MagickBooleanType
330 status;
331
332 size_t
333 blob_length;
334
335 unsigned char
336 *blob_data;
337
338 void
339 *param1;
340
341 param1 = (void *) NULL;
342 status=MagickTrue;
343 clone_info=CloneImageInfo(image_info);
344 if (*clone_info->filename != '\0')
345 {
346 (void) sscanf(clone_info->filename,"%p,%2048s",¶m1,filename);
347 image->client_data=param1;
348 scene=0;
349 (void) CopyMagickString(clone_info->filename,filename,
350 MagickPathExtent);
351 for (p=image; p != (Image *) NULL; p=GetNextImageInList(p))
352 {
353 (void) CopyMagickString(p->filename,filename,MagickPathExtent);
354 p->scene=scene++;
355 }
356 SetImageInfo(clone_info,1,exception);
357 (void) CopyMagickString(image->magick,clone_info->magick,
358 MagickPathExtent);
359 blob_data=ImageToBlob(clone_info,image,&blob_length,
360 exception);
361 if (blob_data == (unsigned char *) NULL)
362 status=MagickFalse;
363 else
364 SafeArrayFifo(image,blob_data,blob_length);
365 if (status == MagickFalse)
366 CatchImageException(image);
367 }
368 clone_info=DestroyImageInfo(clone_info);
369 return(MagickTrue);
370 }
371 #endif
372