1 /* 2 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 3 % % 4 % % 5 % % 6 % IIIII N N L IIIII N N EEEEE % 7 % I NN N L I NN N E % 8 % I N N N L I N N N EEE % 9 % I N NN L I N NN E % 10 % IIIII N N LLLLL IIIII N N EEEEE % 11 % % 12 % % 13 % Read Inline Images % 14 % % 15 % Software Design % 16 % Cristy % 17 % July 1992 % 18 % % 19 % % 20 % Copyright 1999-2016 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 % http://www.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 */ 38 39 /* 41 Include declarations. 42 */ 43 #include "MagickCore/studio.h" 44 #include "MagickCore/blob.h" 45 #include "MagickCore/blob-private.h" 46 #include "MagickCore/client.h" 47 #include "MagickCore/constitute.h" 48 #include "MagickCore/display.h" 49 #include "MagickCore/exception.h" 50 #include "MagickCore/exception-private.h" 51 #include "MagickCore/image.h" 52 #include "MagickCore/image-private.h" 53 #include "MagickCore/list.h" 54 #include "MagickCore/magick.h" 55 #include "MagickCore/memory_.h" 56 #include "MagickCore/option.h" 57 #include "MagickCore/quantum-private.h" 58 #include "MagickCore/static.h" 59 #include "MagickCore/string_.h" 60 #include "MagickCore/module.h" 61 #include "MagickCore/utility.h" 62 #include "MagickCore/xwindow.h" 63 #include "MagickCore/xwindow-private.h" 64 65 /* 67 Forward declarations. 68 */ 69 static MagickBooleanType 70 WriteINLINEImage(const ImageInfo *,Image *,ExceptionInfo *); 71 72 /* 74 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 75 % % 76 % % 77 % % 78 % R e a d I N L I N E I m a g e % 79 % % 80 % % 81 % % 82 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 83 % 84 % ReadINLINEImage() reads base64-encoded inlines images. 85 % 86 % The format of the ReadINLINEImage method is: 87 % 88 % Image *ReadINLINEImage(const ImageInfo *image_info, 89 % ExceptionInfo *exception) 90 % 91 % A description of each parameter follows: 92 % 93 % o image_info: the image info. 94 % 95 % o exception: return any errors or warnings in this structure. 96 % 97 */ 98 static Image *ReadINLINEImage(const ImageInfo *image_info, 99 ExceptionInfo *exception) 100 { 101 Image 102 *image; 103 104 MagickBooleanType 105 status; 106 107 register size_t 108 i; 109 110 size_t 111 quantum; 112 113 ssize_t 114 count; 115 116 unsigned char 117 *inline_image; 118 119 /* 120 Open image file. 121 */ 122 assert(image_info != (const ImageInfo *) NULL); 123 assert(image_info->signature == MagickCoreSignature); 124 if (image_info->debug != MagickFalse) 125 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s", 126 image_info->filename); 127 assert(exception != (ExceptionInfo *) NULL); 128 assert(exception->signature == MagickCoreSignature); 129 if (LocaleCompare(image_info->magick,"DATA") == 0) 130 { 131 char 132 *filename; 133 134 Image 135 *data_image; 136 137 filename=AcquireString("data:"); 138 (void) ConcatenateMagickString(filename,image_info->filename, 139 MagickPathExtent); 140 data_image=ReadInlineImage(image_info,filename,exception); 141 filename=DestroyString(filename); 142 return(data_image); 143 } 144 image=AcquireImage(image_info,exception); 145 status=OpenBlob(image_info,image,ReadBinaryBlobMode,exception); 146 if (status == MagickFalse) 147 { 148 image=DestroyImageList(image); 149 return((Image *) NULL); 150 } 151 quantum=MagickMin((size_t) GetBlobSize(image),MagickMaxBufferExtent); 152 if (quantum == 0) 153 quantum=MagickMaxBufferExtent; 154 inline_image=(unsigned char *) AcquireQuantumMemory(quantum, 155 sizeof(*inline_image)); 156 count=0; 157 for (i=0; inline_image != (unsigned char *) NULL; i+=count) 158 { 159 count=(ssize_t) ReadBlob(image,quantum,inline_image+i); 160 if (count <= 0) 161 { 162 count=0; 163 if (errno != EINTR) 164 break; 165 } 166 if (~((size_t) i) < (quantum+1)) 167 { 168 inline_image=(unsigned char *) RelinquishMagickMemory(inline_image); 169 break; 170 } 171 inline_image=(unsigned char *) ResizeQuantumMemory(inline_image,i+count+ 172 quantum+1,sizeof(*inline_image)); 173 } 174 if (inline_image == (unsigned char *) NULL) 175 { 176 (void) ThrowMagickException(exception,GetMagickModule(), 177 ResourceLimitError,"MemoryAllocationFailed","`%s'",image->filename); 178 return((Image *) NULL); 179 } 180 inline_image[i+count]='\0'; 181 image=DestroyImageList(image); 182 image=ReadInlineImage(image_info,(char *) inline_image,exception); 183 inline_image=(unsigned char *) RelinquishMagickMemory(inline_image); 184 return(image); 185 } 186 187 /* 189 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 190 % % 191 % % 192 % % 193 % R e g i s t e r I N L I N E I m a g e % 194 % % 195 % % 196 % % 197 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 198 % 199 % RegisterINLINEImage() adds attributes for the INLINE image format to 200 % the list of supported formats. The attributes include the image format 201 % tag, a method to read and/or write the format, whether the format 202 % supports the saving of more than one frame to the same file or blob, 203 % whether the format supports native in-memory I/O, and a brief 204 % description of the format. 205 % 206 % The format of the RegisterINLINEImage method is: 207 % 208 % size_t RegisterINLINEImage(void) 209 % 210 */ 211 ModuleExport size_t RegisterINLINEImage(void) 212 { 213 MagickInfo 214 *entry; 215 216 entry=AcquireMagickInfo("DATA","INLINE","Base64-encoded inline images"); 217 entry->decoder=(DecodeImageHandler *) ReadINLINEImage; 218 entry->encoder=(EncodeImageHandler *) WriteINLINEImage; 219 entry->format_type=ImplicitFormatType; 220 (void) RegisterMagickInfo(entry); 221 entry=AcquireMagickInfo("INLINE","INLINE","Base64-encoded inline images"); 222 entry->decoder=(DecodeImageHandler *) ReadINLINEImage; 223 entry->encoder=(EncodeImageHandler *) WriteINLINEImage; 224 entry->format_type=ImplicitFormatType; 225 (void) RegisterMagickInfo(entry); 226 return(MagickImageCoderSignature); 227 } 228 229 /* 231 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 232 % % 233 % % 234 % % 235 % U n r e g i s t e r I N L I N E I m a g e % 236 % % 237 % % 238 % % 239 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 240 % 241 % UnregisterINLINEImage() removes format registrations made by the 242 % INLINE module from the list of supported formats. 243 % 244 % The format of the UnregisterINLINEImage method is: 245 % 246 % UnregisterINLINEImage(void) 247 % 248 */ 249 ModuleExport void UnregisterINLINEImage(void) 250 { 251 (void) UnregisterMagickInfo("INLINE"); 252 (void) UnregisterMagickInfo("DATA"); 253 } 254 255 /* 257 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 258 % % 259 % % 260 % % 261 % W r i t e I N L I N E I m a g e % 262 % % 263 % % 264 % % 265 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 266 % 267 % WriteINLINEImage() writes an image to a file in INLINE format (Base64). 268 % 269 % The format of the WriteINLINEImage method is: 270 % 271 % MagickBooleanType WriteINLINEImage(const ImageInfo *image_info, 272 % Image *image,ExceptionInfo *exception) 273 % 274 % A description of each parameter follows. 275 % 276 % o image_info: the image info. 277 % 278 % o image: The image. 279 % 280 % o exception: return any errors or warnings in this structure. 281 % 282 */ 283 static MagickBooleanType WriteINLINEImage(const ImageInfo *image_info, 284 Image *image,ExceptionInfo *exception) 285 { 286 char 287 *base64, 288 message[MagickPathExtent]; 289 290 const MagickInfo 291 *magick_info; 292 293 Image 294 *write_image; 295 296 ImageInfo 297 *write_info; 298 299 MagickBooleanType 300 status; 301 302 size_t 303 blob_length, 304 encode_length; 305 306 unsigned char 307 *blob; 308 309 /* 310 Convert image to base64-encoding. 311 */ 312 assert(image_info != (const ImageInfo *) NULL); 313 assert(image_info->signature == MagickCoreSignature); 314 assert(image != (Image *) NULL); 315 assert(image->signature == MagickCoreSignature); 316 if (image->debug != MagickFalse) 317 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename); 318 write_info=CloneImageInfo(image_info); 319 (void) SetImageInfo(write_info,1,exception); 320 if (LocaleCompare(write_info->magick,"INLINE") == 0) 321 (void) CopyMagickString(write_info->magick,image->magick,MagickPathExtent); 322 magick_info=GetMagickInfo(write_info->magick,exception); 323 if ((magick_info == (const MagickInfo *) NULL) || 324 (GetMagickMimeType(magick_info) == (const char *) NULL)) 325 ThrowWriterException(CorruptImageError,"ImageTypeNotSupported"); 326 (void) CopyMagickString(image->filename,write_info->filename, 327 MagickPathExtent); 328 blob_length=2048; 329 write_image=CloneImage(image,0,0,MagickTrue,exception); 330 if (write_image == (Image *) NULL) 331 { 332 write_info=DestroyImageInfo(write_info); 333 return(MagickTrue); 334 } 335 blob=(unsigned char *) ImageToBlob(write_info,write_image,&blob_length, 336 exception); 337 write_image=DestroyImage(write_image); 338 write_info=DestroyImageInfo(write_info); 339 if (blob == (unsigned char *) NULL) 340 return(MagickFalse); 341 encode_length=0; 342 base64=Base64Encode(blob,blob_length,&encode_length); 343 blob=(unsigned char *) RelinquishMagickMemory(blob); 344 if (base64 == (char *) NULL) 345 ThrowWriterException(ResourceLimitError,"MemoryAllocationFailed"); 346 /* 347 Write base64-encoded image. 348 */ 349 status=OpenBlob(image_info,image,WriteBinaryBlobMode,exception); 350 if (status == MagickFalse) 351 { 352 base64=DestroyString(base64); 353 return(status); 354 } 355 (void) FormatLocaleString(message,MagickPathExtent,"data:%s;base64,", 356 GetMagickMimeType(magick_info)); 357 (void) WriteBlobString(image,message); 358 (void) WriteBlobString(image,base64); 359 base64=DestroyString(base64); 360 return(MagickTrue); 361 } 362
