2 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
6 % M M OOO DDDD U U L EEEEE %
7 % MM MM O O D D U U L E %
8 % M M M O O D D U U L EEE %
9 % M M O O D D U U L E %
10 % M M OOO DDDD UUU LLLLL EEEEE %
13 % MagickCore Module Methods %
20 % Copyright 1999-2017 ImageMagick Studio LLC, a non-profit organization %
21 % dedicated to making software imaging solutions freely available. %
23 % You may not use this file except in compliance with the License. You may %
24 % obtain a copy of the License at %
26 % https://www.imagemagick.org/script/license.php %
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. %
34 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
43 #include "MagickCore/studio.h"
44 #include "MagickCore/blob.h"
45 #include "MagickCore/coder.h"
46 #include "MagickCore/client.h"
47 #include "MagickCore/configure.h"
48 #include "MagickCore/exception.h"
49 #include "MagickCore/exception-private.h"
50 #include "MagickCore/log.h"
51 #include "MagickCore/linked-list.h"
52 #include "MagickCore/magic.h"
53 #include "MagickCore/magick.h"
54 #include "MagickCore/memory_.h"
55 #include "MagickCore/module.h"
56 #include "MagickCore/module-private.h"
57 #include "MagickCore/nt-base-private.h"
58 #include "MagickCore/policy.h"
59 #include "MagickCore/semaphore.h"
60 #include "MagickCore/splay-tree.h"
61 #include "MagickCore/static.h"
62 #include "MagickCore/string_.h"
63 #include "MagickCore/string-private.h"
64 #include "MagickCore/token.h"
65 #include "MagickCore/utility.h"
66 #include "MagickCore/utility-private.h"
67 #if defined(MAGICKCORE_MODULES_SUPPORT)
68 #if defined(MAGICKCORE_LTDL_DELEGATE)
70 typedef lt_dlhandle ModuleHandle;
72 typedef void *ModuleHandle;
78 #if defined(MAGICKCORE_LTDL_DELEGATE)
79 # define ModuleGlobExpression "*.la"
82 # define ModuleGlobExpression "IM_MOD_DB_*.dll"
84 # define ModuleGlobExpression "IM_MOD_RL_*.dll"
92 *module_semaphore = (SemaphoreInfo *) NULL;
95 *module_list = (SplayTreeInfo *) NULL;
100 static const ModuleInfo
101 *RegisterModule(const ModuleInfo *,ExceptionInfo *);
103 static MagickBooleanType
104 GetMagickModulePath(const char *,MagickModuleType,char *,ExceptionInfo *),
105 IsModuleTreeInstantiated(),
106 UnregisterModule(const ModuleInfo *,ExceptionInfo *);
109 TagToCoderModuleName(const char *,char *),
110 TagToFilterModuleName(const char *,char *),
111 TagToModuleName(const char *,const char *,char *);
114 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
118 % A c q u i r e M o d u l e I n f o %
122 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
124 % AcquireModuleInfo() allocates the ModuleInfo structure.
126 % The format of the AcquireModuleInfo method is:
128 % ModuleInfo *AcquireModuleInfo(const char *path,const char *tag)
130 % A description of each parameter follows:
132 % o path: the path associated with the tag.
134 % o tag: a character string that represents the image format we are
138 MagickExport ModuleInfo *AcquireModuleInfo(const char *path,const char *tag)
143 module_info=(ModuleInfo *) AcquireMagickMemory(sizeof(*module_info));
144 if (module_info == (ModuleInfo *) NULL)
145 ThrowFatalException(ResourceLimitFatalError,"MemoryAllocationFailed");
146 (void) ResetMagickMemory(module_info,0,sizeof(*module_info));
147 if (path != (const char *) NULL)
148 module_info->path=ConstantString(path);
149 if (tag != (const char *) NULL)
150 module_info->tag=ConstantString(tag);
151 module_info->timestamp=time(0);
152 module_info->signature=MagickCoreSignature;
157 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
161 % D e s t r o y M o d u l e L i s t %
165 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
167 % DestroyModuleList() unregisters any previously loaded modules and exits
168 % the module loaded environment.
170 % The format of the DestroyModuleList module is:
172 % void DestroyModuleList(void)
175 MagickExport void DestroyModuleList(void)
178 Destroy magick modules.
180 LockSemaphoreInfo(module_semaphore);
181 #if defined(MAGICKCORE_MODULES_SUPPORT)
182 if (module_list != (SplayTreeInfo *) NULL)
183 module_list=DestroySplayTree(module_list);
185 UnlockSemaphoreInfo(module_semaphore);
189 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
193 % G e t M o d u l e I n f o %
197 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
199 % GetModuleInfo() returns a pointer to a ModuleInfo structure that matches the
200 % specified tag. If tag is NULL, the head of the module list is returned. If
201 % no modules are loaded, or the requested module is not found, NULL is
204 % The format of the GetModuleInfo module is:
206 % ModuleInfo *GetModuleInfo(const char *tag,ExceptionInfo *exception)
208 % A description of each parameter follows:
210 % o tag: a character string that represents the image format we are
213 % o exception: return any errors or warnings in this structure.
216 MagickExport ModuleInfo *GetModuleInfo(const char *tag,ExceptionInfo *exception)
221 if (IsModuleTreeInstantiated() == MagickFalse)
222 return((ModuleInfo *) NULL);
223 LockSemaphoreInfo(module_semaphore);
224 ResetSplayTreeIterator(module_list);
225 if ((tag == (const char *) NULL) || (LocaleCompare(tag,"*") == 0))
227 #if defined(MAGICKCORE_MODULES_SUPPORT)
228 if (LocaleCompare(tag,"*") == 0)
229 (void) OpenModules(exception);
231 module_info=(ModuleInfo *) GetNextValueInSplayTree(module_list);
232 UnlockSemaphoreInfo(module_semaphore);
235 module_info=(ModuleInfo *) GetValueFromSplayTree(module_list,tag);
236 UnlockSemaphoreInfo(module_semaphore);
241 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
245 % G e t M o d u l e I n f o L i s t %
249 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
251 % GetModuleInfoList() returns any modules that match the specified pattern.
253 % The format of the GetModuleInfoList function is:
255 % const ModuleInfo **GetModuleInfoList(const char *pattern,
256 % size_t *number_modules,ExceptionInfo *exception)
258 % A description of each parameter follows:
260 % o pattern: Specifies a pointer to a text string containing a pattern.
262 % o number_modules: This integer returns the number of modules in the list.
264 % o exception: return any errors or warnings in this structure.
268 #if defined(__cplusplus) || defined(c_plusplus)
272 static int ModuleInfoCompare(const void *x,const void *y)
278 p=(const ModuleInfo **) x,
279 q=(const ModuleInfo **) y;
280 if (LocaleCompare((*p)->path,(*q)->path) == 0)
281 return(LocaleCompare((*p)->tag,(*q)->tag));
282 return(LocaleCompare((*p)->path,(*q)->path));
285 #if defined(__cplusplus) || defined(c_plusplus)
289 MagickExport const ModuleInfo **GetModuleInfoList(const char *pattern,
290 size_t *number_modules,ExceptionInfo *exception)
295 register const ModuleInfo
302 Allocate module list.
304 assert(pattern != (char *) NULL);
305 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",pattern);
306 assert(number_modules != (size_t *) NULL);
308 p=GetModuleInfo("*",exception);
309 if (p == (const ModuleInfo *) NULL)
310 return((const ModuleInfo **) NULL);
311 modules=(const ModuleInfo **) AcquireQuantumMemory((size_t)
312 GetNumberOfNodesInSplayTree(module_list)+1UL,sizeof(*modules));
313 if (modules == (const ModuleInfo **) NULL)
314 return((const ModuleInfo **) NULL);
316 Generate module list.
318 LockSemaphoreInfo(module_semaphore);
319 ResetSplayTreeIterator(module_list);
320 p=(const ModuleInfo *) GetNextValueInSplayTree(module_list);
321 for (i=0; p != (const ModuleInfo *) NULL; )
323 if ((p->stealth == MagickFalse) &&
324 (GlobExpression(p->tag,pattern,MagickFalse) != MagickFalse))
326 p=(const ModuleInfo *) GetNextValueInSplayTree(module_list);
328 UnlockSemaphoreInfo(module_semaphore);
329 qsort((void *) modules,(size_t) i,sizeof(*modules),ModuleInfoCompare);
330 modules[i]=(ModuleInfo *) NULL;
331 *number_modules=(size_t) i;
336 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
340 % G e t M o d u l e L i s t %
344 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
346 % GetModuleList() returns any image format modules that match the specified
349 % The format of the GetModuleList function is:
351 % char **GetModuleList(const char *pattern,const MagickModuleType type,
352 % size_t *number_modules,ExceptionInfo *exception)
354 % A description of each parameter follows:
356 % o pattern: Specifies a pointer to a text string containing a pattern.
358 % o type: choose from MagickImageCoderModule or MagickImageFilterModule.
360 % o number_modules: This integer returns the number of modules in the
363 % o exception: return any errors or warnings in this structure.
367 #if defined(__cplusplus) || defined(c_plusplus)
371 static int ModuleCompare(const void *x,const void *y)
379 return(LocaleCompare(*p,*q));
382 #if defined(__cplusplus) || defined(c_plusplus)
386 MagickExport char **GetModuleList(const char *pattern,
387 const MagickModuleType type,size_t *number_modules,ExceptionInfo *exception)
389 #define MaxModules 511
393 filename[MagickPathExtent],
394 module_path[MagickPathExtent],
395 path[MagickPathExtent];
414 Locate all modules in the image coder or filter path.
418 case MagickImageCoderModule:
421 TagToCoderModuleName("magick",filename);
422 status=GetMagickModulePath(filename,MagickImageCoderModule,module_path,
426 case MagickImageFilterModule:
428 TagToFilterModuleName("analyze",filename);
429 status=GetMagickModulePath(filename,MagickImageFilterModule,module_path,
434 if (status == MagickFalse)
435 return((char **) NULL);
436 GetPathComponent(module_path,HeadPath,path);
437 max_entries=MaxModules;
438 modules=(char **) AcquireQuantumMemory((size_t) max_entries+1UL,
440 if (modules == (char **) NULL)
441 return((char **) NULL);
442 *modules=(char *) NULL;
443 directory=opendir(path);
444 if (directory == (DIR *) NULL)
446 modules=(char **) RelinquishMagickMemory(modules);
447 return((char **) NULL);
449 buffer=(struct dirent *) AcquireMagickMemory(sizeof(*buffer)+FILENAME_MAX+1);
450 if (buffer == (struct dirent *) NULL)
451 ThrowFatalException(ResourceLimitFatalError,"MemoryAllocationFailed");
453 while ((MagickReadDirectory(directory,buffer,&entry) == 0) &&
454 (entry != (struct dirent *) NULL))
456 status=GlobExpression(entry->d_name,ModuleGlobExpression,MagickFalse);
457 if (status == MagickFalse)
459 if (GlobExpression(entry->d_name,pattern,MagickFalse) == MagickFalse)
461 if (i >= (ssize_t) max_entries)
463 modules=(char **) NULL;
464 if (~max_entries > max_entries)
465 modules=(char **) ResizeQuantumMemory(modules,(size_t)
466 (max_entries << 1),sizeof(*modules));
468 if (modules == (char **) NULL)
472 Add new module name to list.
474 modules[i]=AcquireString((char *) NULL);
475 GetPathComponent(entry->d_name,BasePath,modules[i]);
476 if (LocaleNCompare("IM_MOD_",modules[i],7) == 0)
478 (void) CopyMagickString(modules[i],modules[i]+10,MagickPathExtent);
479 modules[i][strlen(modules[i])-1]='\0';
483 buffer=(struct dirent *) RelinquishMagickMemory(buffer);
484 (void) closedir(directory);
485 if (modules == (char **) NULL)
487 (void) ThrowMagickException(exception,GetMagickModule(),ConfigureError,
488 "MemoryAllocationFailed","`%s'",pattern);
489 return((char **) NULL);
491 qsort((void *) modules,(size_t) i,sizeof(*modules),ModuleCompare);
492 modules[i]=(char *) NULL;
493 *number_modules=(size_t) i;
498 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
502 % G e t M a g i c k M o d u l e P a t h %
506 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
508 % GetMagickModulePath() finds a module with the specified module type and
511 % The format of the GetMagickModulePath module is:
513 % MagickBooleanType GetMagickModulePath(const char *filename,
514 % MagickModuleType module_type,char *path,ExceptionInfo *exception)
516 % A description of each parameter follows:
518 % o filename: the module file name.
520 % o module_type: the module type: MagickImageCoderModule or
521 % MagickImageFilterModule.
523 % o path: the path associated with the filename.
525 % o exception: return any errors or warnings in this structure.
528 static MagickBooleanType GetMagickModulePath(const char *filename,
529 MagickModuleType module_type,char *path,ExceptionInfo *exception)
534 assert(filename != (const char *) NULL);
535 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",filename);
536 assert(path != (char *) NULL);
537 assert(exception != (ExceptionInfo *) NULL);
538 if (strchr(filename,'/') != (char *) NULL)
540 (void) CopyMagickString(path,filename,MagickPathExtent);
541 module_path=(char *) NULL;
544 case MagickImageCoderModule:
547 (void) LogMagickEvent(ModuleEvent,GetMagickModule(),
548 "Searching for coder module file \"%s\" ...",filename);
549 module_path=GetEnvironmentValue("MAGICK_CODER_MODULE_PATH");
550 #if defined(MAGICKCORE_CODER_PATH)
551 if (module_path == (char *) NULL)
552 module_path=AcquireString(MAGICKCORE_CODER_PATH);
556 case MagickImageFilterModule:
558 (void) LogMagickEvent(ModuleEvent,GetMagickModule(),
559 "Searching for filter module file \"%s\" ...",filename);
560 module_path=GetEnvironmentValue("MAGICK_CODER_FILTER_PATH");
561 #if defined(MAGICKCORE_FILTER_PATH)
562 if (module_path == (char *) NULL)
563 module_path=AcquireString(MAGICKCORE_FILTER_PATH);
568 if (module_path != (char *) NULL)
574 for (p=module_path-1; p != (char *) NULL; )
576 (void) CopyMagickString(path,p+1,MagickPathExtent);
577 q=strchr(path,DirectoryListSeparator);
578 if (q != (char *) NULL)
580 q=path+strlen(path)-1;
581 if ((q >= path) && (*q != *DirectorySeparator))
582 (void) ConcatenateMagickString(path,DirectorySeparator,
584 (void) ConcatenateMagickString(path,filename,MagickPathExtent);
585 if (IsPathAccessible(path) != MagickFalse)
587 module_path=DestroyString(module_path);
590 p=strchr(p+1,DirectoryListSeparator);
592 module_path=DestroyString(module_path);
594 #if defined(MAGICKCORE_INSTALLED_SUPPORT)
596 #if defined(MAGICKCORE_CODER_PATH)
602 Search hard coded paths.
606 case MagickImageCoderModule:
609 directory=MAGICKCORE_CODER_PATH;
612 case MagickImageFilterModule:
614 directory=MAGICKCORE_FILTER_PATH;
618 (void) FormatLocaleString(path,MagickPathExtent,"%s%s",directory,
620 if (IsPathAccessible(path) == MagickFalse)
622 ThrowFileException(exception,ConfigureWarning,
623 "UnableToOpenModuleFile",path);
629 #if defined(MAGICKCORE_WINDOWS_SUPPORT)
638 Locate path via registry key.
642 case MagickImageCoderModule:
645 registery_key="CoderModulesPath";
648 case MagickImageFilterModule:
650 registery_key="FilterModulesPath";
654 key_value=NTRegistryKeyLookup(registery_key);
655 if (key_value == (unsigned char *) NULL)
657 ThrowMagickException(exception,GetMagickModule(),ConfigureError,
658 "RegistryKeyLookupFailed","`%s'",registery_key);
661 (void) FormatLocaleString(path,MagickPathExtent,"%s%s%s",(char *)
662 key_value,DirectorySeparator,filename);
663 key_value=(unsigned char *) RelinquishMagickMemory(key_value);
664 if (IsPathAccessible(path) == MagickFalse)
666 ThrowFileException(exception,ConfigureWarning,
667 "UnableToOpenModuleFile",path);
674 #if !defined(MAGICKCORE_CODER_PATH) && !defined(MAGICKCORE_WINDOWS_SUPPORT)
675 # error MAGICKCORE_CODER_PATH or MAGICKCORE_WINDOWS_SUPPORT must be defined when MAGICKCORE_INSTALLED_SUPPORT is defined
682 home=GetEnvironmentValue("MAGICK_HOME");
683 if (home != (char *) NULL)
688 #if !defined(MAGICKCORE_POSIX_SUPPORT)
689 (void) FormatLocaleString(path,MagickPathExtent,"%s%s%s",home,
690 DirectorySeparator,filename);
697 case MagickImageCoderModule:
700 directory=MAGICKCORE_CODER_RELATIVE_PATH;
703 case MagickImageFilterModule:
705 directory=MAGICKCORE_FILTER_RELATIVE_PATH;
709 (void) FormatLocaleString(path,MagickPathExtent,"%s/lib/%s/%s",home,
712 home=DestroyString(home);
713 if (IsPathAccessible(path) != MagickFalse)
717 if (*GetClientPath() != '\0')
720 Search based on executable directory.
722 #if !defined(MAGICKCORE_POSIX_SUPPORT)
723 (void) FormatLocaleString(path,MagickPathExtent,"%s%s%s",GetClientPath(),
724 DirectorySeparator,filename);
727 prefix[MagickPathExtent];
734 case MagickImageCoderModule:
740 case MagickImageFilterModule:
746 (void) CopyMagickString(prefix,GetClientPath(),MagickPathExtent);
747 ChopPathComponents(prefix,1);
748 (void) FormatLocaleString(path,MagickPathExtent,"%s/lib/%s/%s/%s",prefix,
749 MAGICKCORE_MODULES_RELATIVE_PATH,directory,filename);
751 if (IsPathAccessible(path) != MagickFalse)
754 #if defined(MAGICKCORE_WINDOWS_SUPPORT)
759 if ((NTGetModulePath("CORE_RL_MagickCore_.dll",path) != MagickFalse) ||
760 (NTGetModulePath("CORE_DB_MagickCore_.dll",path) != MagickFalse))
762 (void) ConcatenateMagickString(path,DirectorySeparator,
764 (void) ConcatenateMagickString(path,filename,MagickPathExtent);
765 if (IsPathAccessible(path) != MagickFalse)
774 home=GetEnvironmentValue("XDG_CONFIG_HOME");
775 if (home == (char *) NULL)
776 home=GetEnvironmentValue("LOCALAPPDATA");
777 if (home == (char *) NULL)
778 home=GetEnvironmentValue("APPDATA");
779 if (home == (char *) NULL)
780 home=GetEnvironmentValue("USERPROFILE");
781 if (home != (char *) NULL)
784 Search $XDG_CONFIG_HOME/ImageMagick.
786 (void) FormatLocaleString(path,MagickPathExtent,"%s%sImageMagick%s%s",
787 home,DirectorySeparator,DirectorySeparator,filename);
788 home=DestroyString(home);
789 if (IsPathAccessible(path) != MagickFalse)
792 home=GetEnvironmentValue("HOME");
793 if (home != (char *) NULL)
796 Search $HOME/.config/ImageMagick.
798 (void) FormatLocaleString(path,MagickPathExtent,
799 "%s%s.config%sImageMagick%s%s",home,DirectorySeparator,
800 DirectorySeparator,DirectorySeparator,filename);
801 home=DestroyString(home);
802 if (IsPathAccessible(path) != MagickFalse)
807 Search current directory.
809 if (IsPathAccessible(path) != MagickFalse)
811 if (exception->severity < ConfigureError)
812 ThrowFileException(exception,ConfigureWarning,"UnableToOpenModuleFile",
819 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
823 % I s M o d u l e T r e e I n s t a n t i a t e d %
827 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
829 % IsModuleTreeInstantiated() determines if the module tree is instantiated.
830 % If not, it instantiates the tree and returns it.
832 % The format of the IsModuleTreeInstantiated() method is:
834 % IsModuleTreeInstantiated()
838 static void *DestroyModuleNode(void *module_info)
846 exception=AcquireExceptionInfo();
847 p=(ModuleInfo *) module_info;
848 if (UnregisterModule(p,exception) == MagickFalse)
849 CatchException(exception);
850 if (p->tag != (char *) NULL)
851 p->tag=DestroyString(p->tag);
852 if (p->path != (char *) NULL)
853 p->path=DestroyString(p->path);
854 exception=DestroyExceptionInfo(exception);
855 return(RelinquishMagickMemory(p));
858 static MagickBooleanType IsModuleTreeInstantiated()
860 if (module_list == (SplayTreeInfo *) NULL)
862 if (module_semaphore == (SemaphoreInfo *) NULL)
863 ActivateSemaphoreInfo(&module_semaphore);
864 LockSemaphoreInfo(module_semaphore);
865 if (module_list == (SplayTreeInfo *) NULL)
873 module_list=NewSplayTree(CompareSplayTreeString,
874 (void *(*)(void *)) NULL,DestroyModuleNode);
875 if (module_list == (SplayTreeInfo *) NULL)
876 ThrowFatalException(ResourceLimitFatalError,
877 "MemoryAllocationFailed");
878 module_info=AcquireModuleInfo((const char *) NULL,"[boot-strap]");
879 module_info->stealth=MagickTrue;
880 status=AddValueToSplayTree(module_list,module_info->tag,module_info);
881 if (status == MagickFalse)
882 ThrowFatalException(ResourceLimitFatalError,
883 "MemoryAllocationFailed");
884 if (lt_dlinit() != 0)
885 ThrowFatalException(ModuleFatalError,
886 "UnableToInitializeModuleLoader");
888 UnlockSemaphoreInfo(module_semaphore);
890 return(module_list != (SplayTreeInfo *) NULL ? MagickTrue : MagickFalse);
894 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
898 % I n v o k e D y n a m i c I m a g e F i l t e r %
902 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
904 % InvokeDynamicImageFilter() invokes a dynamic image filter.
906 % The format of the InvokeDynamicImageFilter module is:
908 % MagickBooleanType InvokeDynamicImageFilter(const char *tag,Image **image,
909 % const int argc,const char **argv,ExceptionInfo *exception)
911 % A description of each parameter follows:
913 % o tag: a character string that represents the name of the particular
916 % o image: the image.
918 % o argc: a pointer to an integer describing the number of elements in the
921 % o argv: a pointer to a text array containing the command line arguments.
923 % o exception: return any errors or warnings in this structure.
926 MagickExport MagickBooleanType InvokeDynamicImageFilter(const char *tag,
927 Image **images,const int argc,const char **argv,ExceptionInfo *exception)
930 name[MagickPathExtent],
931 path[MagickPathExtent];
948 assert(images != (Image **) NULL);
949 assert((*images)->signature == MagickCoreSignature);
950 if ((*images)->debug != MagickFalse)
951 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",
952 (*images)->filename);
953 #if !defined(MAGICKCORE_BUILD_MODULES)
958 status=InvokeStaticImageFilter(tag,images,argc,argv,exception);
959 if (status != MagickFalse)
963 rights=ReadPolicyRights;
964 if (IsRightsAuthorized(FilterPolicyDomain,rights,tag) == MagickFalse)
967 (void) ThrowMagickException(exception,GetMagickModule(),PolicyError,
968 "NotAuthorized","`%s'",tag);
971 TagToFilterModuleName(tag,name);
972 status=GetMagickModulePath(name,MagickImageFilterModule,path,exception);
973 if (status == MagickFalse)
975 (void) ThrowMagickException(exception,GetMagickModule(),ModuleError,
976 "UnableToLoadModule","'%s': %s",name,path);
982 handle=(ModuleHandle) lt_dlopen(path);
983 if (handle == (ModuleHandle) NULL)
985 (void) ThrowMagickException(exception,GetMagickModule(),ModuleError,
986 "UnableToLoadModule","'%s': %s",name,lt_dlerror());
992 #if !defined(MAGICKCORE_NAMESPACE_PREFIX)
993 (void) FormatLocaleString(name,MagickPathExtent,"%sImage",tag);
995 (void) FormatLocaleString(name,MagickPathExtent,"%s%sImage",
996 MAGICKCORE_NAMESPACE_PREFIX,tag);
1001 ClearMagickException(exception);
1002 image_filter=(ImageFilterHandler *) lt_dlsym(handle,name);
1003 if (image_filter == (ImageFilterHandler *) NULL)
1004 (void) ThrowMagickException(exception,GetMagickModule(),ModuleError,
1005 "UnableToLoadModule","'%s': %s",name,lt_dlerror());
1011 if ((*images)->debug != MagickFalse)
1012 (void) LogMagickEvent(ModuleEvent,GetMagickModule(),
1013 "Invoking \"%s\" dynamic image filter",tag);
1014 signature=image_filter(images,argc,argv,exception);
1015 if ((*images)->debug != MagickFalse)
1016 (void) LogMagickEvent(ModuleEvent,GetMagickModule(),"\"%s\" completes",
1018 if (signature != MagickImageFilterSignature)
1019 (void) ThrowMagickException(exception,GetMagickModule(),ModuleError,
1020 "ImageFilterSignatureMismatch","'%s': %8lx != %8lx",tag,
1021 (unsigned long) signature,(unsigned long) MagickImageFilterSignature);
1026 if (lt_dlclose(handle) != 0)
1027 (void) ThrowMagickException(exception,GetMagickModule(),ModuleWarning,
1028 "UnableToCloseModule","'%s': %s",name,lt_dlerror());
1029 return(exception->severity < ErrorException ? MagickTrue : MagickFalse);
1033 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1037 % L i s t M o d u l e I n f o %
1041 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1043 % ListModuleInfo() lists the module info to a file.
1045 % The format of the ListModuleInfo module is:
1047 % MagickBooleanType ListModuleInfo(FILE *file,ExceptionInfo *exception)
1049 % A description of each parameter follows.
1051 % o file: An pointer to a FILE.
1053 % o exception: return any errors or warnings in this structure.
1056 MagickExport MagickBooleanType ListModuleInfo(FILE *file,
1057 ExceptionInfo *exception)
1060 filename[MagickPathExtent],
1061 module_path[MagickPathExtent],
1063 path[MagickPathExtent];
1071 if (file == (const FILE *) NULL)
1076 modules=GetModuleList("*",MagickImageCoderModule,&number_modules,exception);
1077 if (modules == (char **) NULL)
1078 return(MagickFalse);
1079 TagToCoderModuleName("magick",filename);
1080 (void) GetMagickModulePath(filename,MagickImageCoderModule,module_path,
1082 GetPathComponent(module_path,HeadPath,path);
1083 (void) FormatLocaleFile(file,"\nPath: %s\n\n",path);
1084 (void) FormatLocaleFile(file,"Image Coder\n");
1085 (void) FormatLocaleFile(file,
1086 "-------------------------------------------------"
1087 "------------------------------\n");
1088 for (i=0; i < (ssize_t) number_modules; i++)
1090 (void) FormatLocaleFile(file,"%s",modules[i]);
1091 (void) FormatLocaleFile(file,"\n");
1093 (void) fflush(file);
1095 Relinquish resources.
1097 for (i=0; i < (ssize_t) number_modules; i++)
1098 modules[i]=DestroyString(modules[i]);
1099 modules=(char **) RelinquishMagickMemory(modules);
1103 modules=GetModuleList("*",MagickImageFilterModule,&number_modules,exception);
1104 if (modules == (char **) NULL)
1105 return(MagickFalse);
1106 TagToFilterModuleName("analyze",filename);
1107 (void) GetMagickModulePath(filename,MagickImageFilterModule,module_path,
1109 GetPathComponent(module_path,HeadPath,path);
1110 (void) FormatLocaleFile(file,"\nPath: %s\n\n",path);
1111 (void) FormatLocaleFile(file,"Image Filter\n");
1112 (void) FormatLocaleFile(file,
1113 "-------------------------------------------------"
1114 "------------------------------\n");
1115 for (i=0; i < (ssize_t) number_modules; i++)
1117 (void) FormatLocaleFile(file,"%s",modules[i]);
1118 (void) FormatLocaleFile(file,"\n");
1120 (void) fflush(file);
1122 Relinquish resources.
1124 for (i=0; i < (ssize_t) number_modules; i++)
1125 modules[i]=DestroyString(modules[i]);
1126 modules=(char **) RelinquishMagickMemory(modules);
1131 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1135 + M o d u l e C o m p o n e n t G e n e s i s %
1139 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1141 % ModuleComponentGenesis() instantiates the module component.
1143 % The format of the ModuleComponentGenesis method is:
1145 % MagickBooleanType ModuleComponentGenesis(void)
1148 MagickPrivate MagickBooleanType ModuleComponentGenesis(void)
1153 if (module_semaphore == (SemaphoreInfo *) NULL)
1154 module_semaphore=AcquireSemaphoreInfo();
1155 status=IsModuleTreeInstantiated();
1160 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1164 + M o d u l e C o m p o n e n t T e r m i n u s %
1168 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1170 % ModuleComponentTerminus() destroys the module component.
1172 % The format of the ModuleComponentTerminus method is:
1174 % ModuleComponentTerminus(void)
1177 MagickPrivate void ModuleComponentTerminus(void)
1179 if (module_semaphore == (SemaphoreInfo *) NULL)
1180 ActivateSemaphoreInfo(&module_semaphore);
1181 DestroyModuleList();
1182 RelinquishSemaphoreInfo(&module_semaphore);
1186 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1190 % O p e n M o d u l e %
1194 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1196 % OpenModule() loads a module, and invokes its registration module. It
1197 % returns MagickTrue on success, and MagickFalse if there is an error.
1199 % The format of the OpenModule module is:
1201 % MagickBooleanType OpenModule(const char *module,ExceptionInfo *exception)
1203 % A description of each parameter follows:
1205 % o module: a character string that indicates the module to load.
1207 % o exception: return any errors or warnings in this structure.
1210 MagickPrivate MagickBooleanType OpenModule(const char *module,
1211 ExceptionInfo *exception)
1214 filename[MagickPathExtent],
1215 module_name[MagickPathExtent],
1216 name[MagickPathExtent],
1217 path[MagickPathExtent];
1228 register const CoderInfo
1235 Assign module name from alias.
1237 assert(module != (const char *) NULL);
1238 module_info=(ModuleInfo *) GetModuleInfo(module,exception);
1239 if (module_info != (ModuleInfo *) NULL)
1241 (void) CopyMagickString(module_name,module,MagickPathExtent);
1242 p=GetCoderInfo(module,exception);
1243 if (p != (CoderInfo *) NULL)
1244 (void) CopyMagickString(module_name,p->name,MagickPathExtent);
1245 if (GetValueFromSplayTree(module_list,module_name) != (void *) NULL)
1246 return(MagickTrue); /* module already opened, return */
1250 handle=(ModuleHandle) NULL;
1251 TagToCoderModuleName(module_name,filename);
1252 (void) LogMagickEvent(ModuleEvent,GetMagickModule(),
1253 "Searching for module \"%s\" using filename \"%s\"",module_name,filename);
1255 status=GetMagickModulePath(filename,MagickImageCoderModule,path,exception);
1256 if (status == MagickFalse)
1257 return(MagickFalse);
1261 (void) LogMagickEvent(ModuleEvent,GetMagickModule(),
1262 "Opening module at path \"%s\"",path);
1263 handle=(ModuleHandle) lt_dlopen(path);
1264 if (handle == (ModuleHandle) NULL)
1266 (void) ThrowMagickException(exception,GetMagickModule(),ModuleError,
1267 "UnableToLoadModule","'%s': %s",path,lt_dlerror());
1268 return(MagickFalse);
1273 module_info=AcquireModuleInfo(path,module_name);
1274 module_info->handle=handle;
1275 if (RegisterModule(module_info,exception) == (ModuleInfo *) NULL)
1276 return(MagickFalse);
1278 Define RegisterFORMATImage method.
1280 TagToModuleName(module_name,"Register%sImage",name);
1281 module_info->register_module=(size_t (*)(void)) lt_dlsym(handle,name);
1282 if (module_info->register_module == (size_t (*)(void)) NULL)
1284 (void) ThrowMagickException(exception,GetMagickModule(),ModuleError,
1285 "UnableToRegisterImageFormat","'%s': %s",module_name,lt_dlerror());
1286 return(MagickFalse);
1288 (void) LogMagickEvent(ModuleEvent,GetMagickModule(),
1289 "Method \"%s\" in module \"%s\" at address %p",name,module_name,
1290 (void *) module_info->register_module);
1292 Define UnregisterFORMATImage method.
1294 TagToModuleName(module_name,"Unregister%sImage",name);
1295 module_info->unregister_module=(void (*)(void)) lt_dlsym(handle,name);
1296 if (module_info->unregister_module == (void (*)(void)) NULL)
1298 (void) ThrowMagickException(exception,GetMagickModule(),ModuleError,
1299 "UnableToRegisterImageFormat","'%s': %s",module_name,lt_dlerror());
1300 return(MagickFalse);
1302 (void) LogMagickEvent(ModuleEvent,GetMagickModule(),
1303 "Method \"%s\" in module \"%s\" at address %p",name,module_name,
1304 (void *) module_info->unregister_module);
1305 signature=module_info->register_module();
1306 if (signature != MagickImageCoderSignature)
1308 (void) ThrowMagickException(exception,GetMagickModule(),ModuleError,
1309 "ImageCoderSignatureMismatch","'%s': %8lx != %8lx",module_name,
1310 (unsigned long) signature,(unsigned long) MagickImageCoderSignature);
1311 return(MagickFalse);
1317 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1321 % O p e n M o d u l e s %
1325 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1327 % OpenModules() loads all available modules.
1329 % The format of the OpenModules module is:
1331 % MagickBooleanType OpenModules(ExceptionInfo *exception)
1333 % A description of each parameter follows:
1335 % o exception: return any errors or warnings in this structure.
1338 MagickPrivate MagickBooleanType OpenModules(ExceptionInfo *exception)
1352 (void) GetMagickInfo((char *) NULL,exception);
1354 modules=GetModuleList("*",MagickImageCoderModule,&number_modules,exception);
1355 if ((modules == (char **) NULL) || (*modules == (char *) NULL))
1357 if (modules != (char **) NULL)
1358 modules=(char **) RelinquishMagickMemory(modules);
1359 return(MagickFalse);
1361 for (i=0; i < (ssize_t) number_modules; i++)
1362 (void) OpenModule(modules[i],exception);
1364 Relinquish resources.
1366 for (i=0; i < (ssize_t) number_modules; i++)
1367 modules[i]=DestroyString(modules[i]);
1368 modules=(char **) RelinquishMagickMemory(modules);
1373 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1377 % R e g i s t e r M o d u l e %
1381 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1383 % RegisterModule() adds an entry to the module list. It returns a pointer to
1384 % the registered entry on success.
1386 % The format of the RegisterModule module is:
1388 % ModuleInfo *RegisterModule(const ModuleInfo *module_info,
1389 % ExceptionInfo *exception)
1391 % A description of each parameter follows:
1393 % o info: a pointer to the registered entry is returned.
1395 % o module_info: a pointer to the ModuleInfo structure to register.
1397 % o exception: return any errors or warnings in this structure.
1400 static const ModuleInfo *RegisterModule(const ModuleInfo *module_info,
1401 ExceptionInfo *exception)
1406 assert(module_info != (ModuleInfo *) NULL);
1407 assert(module_info->signature == MagickCoreSignature);
1408 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",module_info->tag);
1409 if (module_list == (SplayTreeInfo *) NULL)
1410 return((const ModuleInfo *) NULL);
1411 status=AddValueToSplayTree(module_list,module_info->tag,module_info);
1412 if (status == MagickFalse)
1413 (void) ThrowMagickException(exception,GetMagickModule(),ResourceLimitError,
1414 "MemoryAllocationFailed","`%s'",module_info->tag);
1415 return(module_info);
1419 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1423 % T a g T o C o d e r M o d u l e N a m e %
1427 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1429 % TagToCoderModuleName() munges a module tag and obtains the filename of the
1430 % corresponding module.
1432 % The format of the TagToCoderModuleName module is:
1434 % char *TagToCoderModuleName(const char *tag,char *name)
1436 % A description of each parameter follows:
1438 % o tag: a character string representing the module tag.
1440 % o name: return the module name here.
1443 static void TagToCoderModuleName(const char *tag,char *name)
1445 assert(tag != (char *) NULL);
1446 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",tag);
1447 assert(name != (char *) NULL);
1448 #if defined(MAGICKCORE_LTDL_DELEGATE)
1449 (void) FormatLocaleString(name,MagickPathExtent,"%s.la",tag);
1450 (void) LocaleLower(name);
1452 #if defined(MAGICKCORE_WINDOWS_SUPPORT)
1453 if (LocaleNCompare("IM_MOD_",tag,7) == 0)
1454 (void) CopyMagickString(name,tag,MagickPathExtent);
1458 (void) FormatLocaleString(name,MagickPathExtent,"IM_MOD_DB_%s_.dll",tag);
1460 (void) FormatLocaleString(name,MagickPathExtent,"IM_MOD_RL_%s_.dll",tag);
1468 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1472 % T a g T o F i l t e r M o d u l e N a m e %
1476 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1478 % TagToFilterModuleName() munges a module tag and returns the filename of the
1479 % corresponding filter module.
1481 % The format of the TagToFilterModuleName module is:
1483 % void TagToFilterModuleName(const char *tag,char name)
1485 % A description of each parameter follows:
1487 % o tag: a character string representing the module tag.
1489 % o name: return the filter name here.
1492 static void TagToFilterModuleName(const char *tag,char *name)
1494 assert(tag != (char *) NULL);
1495 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",tag);
1496 assert(name != (char *) NULL);
1497 #if defined(MAGICKCORE_WINDOWS_SUPPORT)
1498 (void) FormatLocaleString(name,MagickPathExtent,"FILTER_%s_.dll",tag);
1499 #elif !defined(MAGICKCORE_LTDL_DELEGATE)
1500 (void) FormatLocaleString(name,MagickPathExtent,"%s.dll",tag);
1502 (void) FormatLocaleString(name,MagickPathExtent,"%s.la",tag);
1507 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1511 % T a g T o M o d u l e N a m e %
1515 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1517 % TagToModuleName() munges the module tag name and returns an upper-case tag
1518 % name as the input string, and a user-provided format.
1520 % The format of the TagToModuleName module is:
1522 % TagToModuleName(const char *tag,const char *format,char *module)
1524 % A description of each parameter follows:
1526 % o tag: the module tag.
1528 % o format: a sprintf-compatible format string containing %s where the
1529 % upper-case tag name is to be inserted.
1531 % o module: pointer to a destination buffer for the formatted result.
1534 static void TagToModuleName(const char *tag,const char *format,char *module)
1537 name[MagickPathExtent];
1539 assert(tag != (const char *) NULL);
1540 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",tag);
1541 assert(format != (const char *) NULL);
1542 assert(module != (char *) NULL);
1543 (void) CopyMagickString(name,tag,MagickPathExtent);
1545 #if !defined(MAGICKCORE_NAMESPACE_PREFIX)
1546 (void) FormatLocaleString(module,MagickPathExtent,format,name);
1550 prefix_format[MagickPathExtent];
1552 (void) FormatLocaleString(prefix_format,MagickPathExtent,"%s%s",
1553 MAGICKCORE_NAMESPACE_PREFIX,format);
1554 (void) FormatLocaleString(module,MagickPathExtent,prefix_format,name);
1560 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1564 % U n r e g i s t e r M o d u l e %
1568 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1570 % UnregisterModule() unloads a module, and invokes its de-registration module.
1571 % Returns MagickTrue on success, and MagickFalse if there is an error.
1573 % The format of the UnregisterModule module is:
1575 % MagickBooleanType UnregisterModule(const ModuleInfo *module_info,
1576 % ExceptionInfo *exception)
1578 % A description of each parameter follows:
1580 % o module_info: the module info.
1582 % o exception: return any errors or warnings in this structure.
1585 static MagickBooleanType UnregisterModule(const ModuleInfo *module_info,
1586 ExceptionInfo *exception)
1589 Locate and execute UnregisterFORMATImage module.
1591 assert(module_info != (const ModuleInfo *) NULL);
1592 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",module_info->tag);
1593 assert(exception != (ExceptionInfo *) NULL);
1594 if (module_info->unregister_module == NULL)
1596 module_info->unregister_module();
1597 if (lt_dlclose((ModuleHandle) module_info->handle) != 0)
1599 (void) ThrowMagickException(exception,GetMagickModule(),ModuleWarning,
1600 "UnableToCloseModule","'%s': %s",module_info->tag,lt_dlerror());
1601 return(MagickFalse);
1607 #if !defined(MAGICKCORE_BUILD_MODULES)
1609 analyzeImage(Image **,const int,const char **,ExceptionInfo *);
1612 MagickExport MagickBooleanType ListModuleInfo(FILE *magick_unused(file),
1613 ExceptionInfo *magick_unused(exception))
1618 MagickExport MagickBooleanType InvokeDynamicImageFilter(const char *tag,
1619 Image **image,const int argc,const char **argv,ExceptionInfo *exception)
1624 assert(image != (Image **) NULL);
1625 assert((*image)->signature == MagickCoreSignature);
1626 if ((*image)->debug != MagickFalse)
1627 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",(*image)->filename);
1628 rights=ReadPolicyRights;
1629 if (IsRightsAuthorized(FilterPolicyDomain,rights,tag) == MagickFalse)
1632 (void) ThrowMagickException(exception,GetMagickModule(),PolicyError,
1633 "NotAuthorized","`%s'",tag);
1634 return(MagickFalse);
1636 #if defined(MAGICKCORE_BUILD_MODULES)
1646 image_filter=(ImageFilterHandler *) NULL;
1647 if (LocaleCompare("analyze",tag) == 0)
1648 image_filter=(ImageFilterHandler *) analyzeImage;
1649 if (image_filter == (ImageFilterHandler *) NULL)
1650 (void) ThrowMagickException(exception,GetMagickModule(),ModuleError,
1651 "UnableToLoadModule","`%s'",tag);
1657 if ((*image)->debug != MagickFalse)
1658 (void) LogMagickEvent(CoderEvent,GetMagickModule(),
1659 "Invoking \"%s\" static image filter",tag);
1660 signature=image_filter(image,argc,argv,exception);
1661 if ((*image)->debug != MagickFalse)
1662 (void) LogMagickEvent(CoderEvent,GetMagickModule(),"\"%s\" completes",
1664 if (signature != MagickImageFilterSignature)
1666 (void) ThrowMagickException(exception,GetMagickModule(),ModuleError,
1667 "ImageFilterSignatureMismatch","'%s': %8lx != %8lx",tag,
1668 (unsigned long) signature,(unsigned long)
1669 MagickImageFilterSignature);
1670 return(MagickFalse);