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 1999-2018 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/memory-private.h"
56 #include "MagickCore/module.h"
57 #include "MagickCore/module-private.h"
58 #include "MagickCore/nt-base-private.h"
59 #include "MagickCore/policy.h"
60 #include "MagickCore/semaphore.h"
61 #include "MagickCore/splay-tree.h"
62 #include "MagickCore/static.h"
63 #include "MagickCore/string_.h"
64 #include "MagickCore/string-private.h"
65 #include "MagickCore/token.h"
66 #include "MagickCore/utility.h"
67 #include "MagickCore/utility-private.h"
68 #if defined(MAGICKCORE_MODULES_SUPPORT)
69 #if defined(MAGICKCORE_LTDL_DELEGATE)
71 typedef lt_dlhandle ModuleHandle;
73 typedef void *ModuleHandle;
79 #if defined(MAGICKCORE_LTDL_DELEGATE)
80 # define ModuleGlobExpression "*.la"
83 # define ModuleGlobExpression "IM_MOD_DB_*.dll"
85 # define ModuleGlobExpression "IM_MOD_RL_*.dll"
93 *module_semaphore = (SemaphoreInfo *) NULL;
96 *module_list = (SplayTreeInfo *) NULL;
101 static const ModuleInfo
102 *RegisterModule(const ModuleInfo *,ExceptionInfo *);
104 static MagickBooleanType
105 GetMagickModulePath(const char *,MagickModuleType,char *,ExceptionInfo *),
106 IsModuleTreeInstantiated(),
107 UnregisterModule(const ModuleInfo *,ExceptionInfo *);
110 TagToCoderModuleName(const char *,char *),
111 TagToFilterModuleName(const char *,char *),
112 TagToModuleName(const char *,const char *,char *);
115 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
119 % A c q u i r e M o d u l e I n f o %
123 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
125 % AcquireModuleInfo() allocates the ModuleInfo structure.
127 % The format of the AcquireModuleInfo method is:
129 % ModuleInfo *AcquireModuleInfo(const char *path,const char *tag)
131 % A description of each parameter follows:
133 % o path: the path associated with the tag.
135 % o tag: a character string that represents the image format we are
139 MagickExport ModuleInfo *AcquireModuleInfo(const char *path,const char *tag)
144 module_info=(ModuleInfo *) AcquireCriticalMemory(sizeof(*module_info));
145 (void) memset(module_info,0,sizeof(*module_info));
146 if (path != (const char *) NULL)
147 module_info->path=ConstantString(path);
148 if (tag != (const char *) NULL)
149 module_info->tag=ConstantString(tag);
150 module_info->timestamp=time(0);
151 module_info->signature=MagickCoreSignature;
156 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
160 % D e s t r o y M o d u l e L i s t %
164 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
166 % DestroyModuleList() unregisters any previously loaded modules and exits
167 % the module loaded environment.
169 % The format of the DestroyModuleList module is:
171 % void DestroyModuleList(void)
174 MagickExport void DestroyModuleList(void)
177 Destroy magick modules.
179 LockSemaphoreInfo(module_semaphore);
180 #if defined(MAGICKCORE_MODULES_SUPPORT)
181 if (module_list != (SplayTreeInfo *) NULL)
182 module_list=DestroySplayTree(module_list);
184 UnlockSemaphoreInfo(module_semaphore);
188 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
192 % G e t M o d u l e I n f o %
196 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
198 % GetModuleInfo() returns a pointer to a ModuleInfo structure that matches the
199 % specified tag. If tag is NULL, the head of the module list is returned. If
200 % no modules are loaded, or the requested module is not found, NULL is
203 % The format of the GetModuleInfo module is:
205 % ModuleInfo *GetModuleInfo(const char *tag,ExceptionInfo *exception)
207 % A description of each parameter follows:
209 % o tag: a character string that represents the image format we are
212 % o exception: return any errors or warnings in this structure.
215 MagickExport ModuleInfo *GetModuleInfo(const char *tag,ExceptionInfo *exception)
220 if (IsModuleTreeInstantiated() == MagickFalse)
221 return((ModuleInfo *) NULL);
222 LockSemaphoreInfo(module_semaphore);
223 ResetSplayTreeIterator(module_list);
224 if ((tag == (const char *) NULL) || (LocaleCompare(tag,"*") == 0))
226 #if defined(MAGICKCORE_MODULES_SUPPORT)
227 if (LocaleCompare(tag,"*") == 0)
228 (void) OpenModules(exception);
230 module_info=(ModuleInfo *) GetNextValueInSplayTree(module_list);
231 UnlockSemaphoreInfo(module_semaphore);
234 module_info=(ModuleInfo *) GetValueFromSplayTree(module_list,tag);
235 UnlockSemaphoreInfo(module_semaphore);
240 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
244 % G e t M o d u l e I n f o L i s t %
248 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
250 % GetModuleInfoList() returns any modules that match the specified pattern.
252 % The format of the GetModuleInfoList function is:
254 % const ModuleInfo **GetModuleInfoList(const char *pattern,
255 % size_t *number_modules,ExceptionInfo *exception)
257 % A description of each parameter follows:
259 % o pattern: Specifies a pointer to a text string containing a pattern.
261 % o number_modules: This integer returns the number of modules in the list.
263 % o exception: return any errors or warnings in this structure.
267 #if defined(__cplusplus) || defined(c_plusplus)
271 static int ModuleInfoCompare(const void *x,const void *y)
277 p=(const ModuleInfo **) x,
278 q=(const ModuleInfo **) y;
279 if (LocaleCompare((*p)->path,(*q)->path) == 0)
280 return(LocaleCompare((*p)->tag,(*q)->tag));
281 return(LocaleCompare((*p)->path,(*q)->path));
284 #if defined(__cplusplus) || defined(c_plusplus)
288 MagickExport const ModuleInfo **GetModuleInfoList(const char *pattern,
289 size_t *number_modules,ExceptionInfo *exception)
294 register const ModuleInfo
301 Allocate module list.
303 assert(pattern != (char *) NULL);
304 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",pattern);
305 assert(number_modules != (size_t *) NULL);
307 p=GetModuleInfo("*",exception);
308 if (p == (const ModuleInfo *) NULL)
309 return((const ModuleInfo **) NULL);
310 modules=(const ModuleInfo **) AcquireQuantumMemory((size_t)
311 GetNumberOfNodesInSplayTree(module_list)+1UL,sizeof(*modules));
312 if (modules == (const ModuleInfo **) NULL)
313 return((const ModuleInfo **) NULL);
315 Generate module list.
317 LockSemaphoreInfo(module_semaphore);
318 ResetSplayTreeIterator(module_list);
319 p=(const ModuleInfo *) GetNextValueInSplayTree(module_list);
320 for (i=0; p != (const ModuleInfo *) NULL; )
322 if ((p->stealth == MagickFalse) &&
323 (GlobExpression(p->tag,pattern,MagickFalse) != MagickFalse))
325 p=(const ModuleInfo *) GetNextValueInSplayTree(module_list);
327 UnlockSemaphoreInfo(module_semaphore);
328 qsort((void *) modules,(size_t) i,sizeof(*modules),ModuleInfoCompare);
329 modules[i]=(ModuleInfo *) NULL;
330 *number_modules=(size_t) i;
335 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
339 % G e t M o d u l e L i s t %
343 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
345 % GetModuleList() returns any image format modules that match the specified
348 % The format of the GetModuleList function is:
350 % char **GetModuleList(const char *pattern,const MagickModuleType type,
351 % size_t *number_modules,ExceptionInfo *exception)
353 % A description of each parameter follows:
355 % o pattern: Specifies a pointer to a text string containing a pattern.
357 % o type: choose from MagickImageCoderModule or MagickImageFilterModule.
359 % o number_modules: This integer returns the number of modules in the
362 % o exception: return any errors or warnings in this structure.
366 #if defined(__cplusplus) || defined(c_plusplus)
370 static int ModuleCompare(const void *x,const void *y)
378 return(LocaleCompare(*p,*q));
381 #if defined(__cplusplus) || defined(c_plusplus)
385 MagickExport char **GetModuleList(const char *pattern,
386 const MagickModuleType type,size_t *number_modules,ExceptionInfo *exception)
388 #define MaxModules 511
392 filename[MagickPathExtent],
393 module_path[MagickPathExtent],
394 path[MagickPathExtent];
413 Locate all modules in the image coder or filter path.
417 case MagickImageCoderModule:
420 TagToCoderModuleName("magick",filename);
421 status=GetMagickModulePath(filename,MagickImageCoderModule,module_path,
425 case MagickImageFilterModule:
427 TagToFilterModuleName("analyze",filename);
428 status=GetMagickModulePath(filename,MagickImageFilterModule,module_path,
433 if (status == MagickFalse)
434 return((char **) NULL);
435 GetPathComponent(module_path,HeadPath,path);
436 max_entries=MaxModules;
437 modules=(char **) AcquireQuantumMemory((size_t) max_entries+1UL,
439 if (modules == (char **) NULL)
440 return((char **) NULL);
441 *modules=(char *) NULL;
442 directory=opendir(path);
443 if (directory == (DIR *) NULL)
445 modules=(char **) RelinquishMagickMemory(modules);
446 return((char **) NULL);
448 buffer=(struct dirent *) AcquireMagickMemory(sizeof(*buffer)+FILENAME_MAX+1);
449 if (buffer == (struct dirent *) NULL)
450 ThrowFatalException(ResourceLimitFatalError,"MemoryAllocationFailed");
452 while ((MagickReadDirectory(directory,buffer,&entry) == 0) &&
453 (entry != (struct dirent *) NULL))
455 status=GlobExpression(entry->d_name,ModuleGlobExpression,MagickFalse);
456 if (status == MagickFalse)
458 if (GlobExpression(entry->d_name,pattern,MagickFalse) == MagickFalse)
460 if (i >= (ssize_t) max_entries)
462 modules=(char **) NULL;
463 if (~max_entries > max_entries)
464 modules=(char **) ResizeQuantumMemory(modules,(size_t)
465 (max_entries << 1),sizeof(*modules));
467 if (modules == (char **) NULL)
471 Add new module name to list.
473 modules[i]=AcquireString((char *) NULL);
474 GetPathComponent(entry->d_name,BasePath,modules[i]);
475 if (LocaleNCompare("IM_MOD_",modules[i],7) == 0)
477 (void) CopyMagickString(modules[i],modules[i]+10,MagickPathExtent);
478 modules[i][strlen(modules[i])-1]='\0';
482 buffer=(struct dirent *) RelinquishMagickMemory(buffer);
483 (void) closedir(directory);
484 if (modules == (char **) NULL)
486 (void) ThrowMagickException(exception,GetMagickModule(),ConfigureError,
487 "MemoryAllocationFailed","`%s'",pattern);
488 return((char **) NULL);
490 qsort((void *) modules,(size_t) i,sizeof(*modules),ModuleCompare);
491 modules[i]=(char *) NULL;
492 *number_modules=(size_t) i;
497 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
501 % G e t M a g i c k M o d u l e P a t h %
505 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
507 % GetMagickModulePath() finds a module with the specified module type and
510 % The format of the GetMagickModulePath module is:
512 % MagickBooleanType GetMagickModulePath(const char *filename,
513 % MagickModuleType module_type,char *path,ExceptionInfo *exception)
515 % A description of each parameter follows:
517 % o filename: the module file name.
519 % o module_type: the module type: MagickImageCoderModule or
520 % MagickImageFilterModule.
522 % o path: the path associated with the filename.
524 % o exception: return any errors or warnings in this structure.
527 static MagickBooleanType GetMagickModulePath(const char *filename,
528 MagickModuleType module_type,char *path,ExceptionInfo *exception)
533 assert(filename != (const char *) NULL);
534 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",filename);
535 assert(path != (char *) NULL);
536 assert(exception != (ExceptionInfo *) NULL);
537 if (strchr(filename,'/') != (char *) NULL)
539 (void) CopyMagickString(path,filename,MagickPathExtent);
540 module_path=(char *) NULL;
543 case MagickImageCoderModule:
546 (void) LogMagickEvent(ModuleEvent,GetMagickModule(),
547 "Searching for coder module file \"%s\" ...",filename);
548 module_path=GetEnvironmentValue("MAGICK_CODER_MODULE_PATH");
549 #if defined(MAGICKCORE_CODER_PATH)
550 if (module_path == (char *) NULL)
551 module_path=AcquireString(MAGICKCORE_CODER_PATH);
555 case MagickImageFilterModule:
557 (void) LogMagickEvent(ModuleEvent,GetMagickModule(),
558 "Searching for filter module file \"%s\" ...",filename);
559 module_path=GetEnvironmentValue("MAGICK_CODER_FILTER_PATH");
560 #if defined(MAGICKCORE_FILTER_PATH)
561 if (module_path == (char *) NULL)
562 module_path=AcquireString(MAGICKCORE_FILTER_PATH);
567 if (module_path != (char *) NULL)
573 for (p=module_path-1; p != (char *) NULL; )
575 (void) CopyMagickString(path,p+1,MagickPathExtent);
576 q=strchr(path,DirectoryListSeparator);
577 if (q != (char *) NULL)
579 q=path+strlen(path)-1;
580 if ((q >= path) && (*q != *DirectorySeparator))
581 (void) ConcatenateMagickString(path,DirectorySeparator,
583 (void) ConcatenateMagickString(path,filename,MagickPathExtent);
584 #if defined(MAGICKCORE_HAVE_REALPATH)
587 resolved_path[PATH_MAX+1];
589 if (realpath(path,resolved_path) != (char *) NULL)
590 (void) CopyMagickString(path,resolved_path,MagickPathExtent);
593 if (IsPathAccessible(path) != MagickFalse)
595 module_path=DestroyString(module_path);
598 p=strchr(p+1,DirectoryListSeparator);
600 module_path=DestroyString(module_path);
602 #if defined(MAGICKCORE_INSTALLED_SUPPORT)
604 #if defined(MAGICKCORE_CODER_PATH)
610 Search hard coded paths.
614 case MagickImageCoderModule:
617 directory=MAGICKCORE_CODER_PATH;
620 case MagickImageFilterModule:
622 directory=MAGICKCORE_FILTER_PATH;
626 (void) FormatLocaleString(path,MagickPathExtent,"%s%s",directory,
628 if (IsPathAccessible(path) == MagickFalse)
630 ThrowFileException(exception,ConfigureWarning,
631 "UnableToOpenModuleFile",path);
637 #if defined(MAGICKCORE_WINDOWS_SUPPORT)
646 Locate path via registry key.
650 case MagickImageCoderModule:
653 registery_key="CoderModulesPath";
656 case MagickImageFilterModule:
658 registery_key="FilterModulesPath";
662 key_value=NTRegistryKeyLookup(registery_key);
663 if (key_value == (unsigned char *) NULL)
665 ThrowMagickException(exception,GetMagickModule(),ConfigureError,
666 "RegistryKeyLookupFailed","`%s'",registery_key);
669 (void) FormatLocaleString(path,MagickPathExtent,"%s%s%s",(char *)
670 key_value,DirectorySeparator,filename);
671 key_value=(unsigned char *) RelinquishMagickMemory(key_value);
672 if (IsPathAccessible(path) == MagickFalse)
674 ThrowFileException(exception,ConfigureWarning,
675 "UnableToOpenModuleFile",path);
682 #if !defined(MAGICKCORE_CODER_PATH) && !defined(MAGICKCORE_WINDOWS_SUPPORT)
683 # error MAGICKCORE_CODER_PATH or MAGICKCORE_WINDOWS_SUPPORT must be defined when MAGICKCORE_INSTALLED_SUPPORT is defined
690 home=GetEnvironmentValue("MAGICK_HOME");
691 if (home != (char *) NULL)
696 #if !defined(MAGICKCORE_POSIX_SUPPORT)
697 (void) FormatLocaleString(path,MagickPathExtent,"%s%s%s",home,
698 DirectorySeparator,filename);
705 case MagickImageCoderModule:
708 directory=MAGICKCORE_CODER_RELATIVE_PATH;
711 case MagickImageFilterModule:
713 directory=MAGICKCORE_FILTER_RELATIVE_PATH;
717 (void) FormatLocaleString(path,MagickPathExtent,"%s/lib/%s/%s",home,
720 home=DestroyString(home);
721 if (IsPathAccessible(path) != MagickFalse)
725 if (*GetClientPath() != '\0')
728 Search based on executable directory.
730 #if !defined(MAGICKCORE_POSIX_SUPPORT)
731 (void) FormatLocaleString(path,MagickPathExtent,"%s%s%s",GetClientPath(),
732 DirectorySeparator,filename);
735 prefix[MagickPathExtent];
742 case MagickImageCoderModule:
748 case MagickImageFilterModule:
754 (void) CopyMagickString(prefix,GetClientPath(),MagickPathExtent);
755 ChopPathComponents(prefix,1);
756 (void) FormatLocaleString(path,MagickPathExtent,"%s/lib/%s/%s/%s",prefix,
757 MAGICKCORE_MODULES_RELATIVE_PATH,directory,filename);
759 if (IsPathAccessible(path) != MagickFalse)
762 #if defined(MAGICKCORE_WINDOWS_SUPPORT)
767 if ((NTGetModulePath("CORE_RL_MagickCore_.dll",path) != MagickFalse) ||
768 (NTGetModulePath("CORE_DB_MagickCore_.dll",path) != MagickFalse))
770 (void) ConcatenateMagickString(path,DirectorySeparator,
772 (void) ConcatenateMagickString(path,filename,MagickPathExtent);
773 if (IsPathAccessible(path) != MagickFalse)
782 home=GetEnvironmentValue("XDG_CONFIG_HOME");
783 if (home == (char *) NULL)
784 home=GetEnvironmentValue("LOCALAPPDATA");
785 if (home == (char *) NULL)
786 home=GetEnvironmentValue("APPDATA");
787 if (home == (char *) NULL)
788 home=GetEnvironmentValue("USERPROFILE");
789 if (home != (char *) NULL)
792 Search $XDG_CONFIG_HOME/ImageMagick.
794 (void) FormatLocaleString(path,MagickPathExtent,"%s%sImageMagick%s%s",
795 home,DirectorySeparator,DirectorySeparator,filename);
796 home=DestroyString(home);
797 if (IsPathAccessible(path) != MagickFalse)
800 home=GetEnvironmentValue("HOME");
801 if (home != (char *) NULL)
804 Search $HOME/.config/ImageMagick.
806 (void) FormatLocaleString(path,MagickPathExtent,
807 "%s%s.config%sImageMagick%s%s",home,DirectorySeparator,
808 DirectorySeparator,DirectorySeparator,filename);
809 home=DestroyString(home);
810 if (IsPathAccessible(path) != MagickFalse)
815 Search current directory.
817 if (IsPathAccessible(path) != MagickFalse)
819 if (exception->severity < ConfigureError)
820 ThrowFileException(exception,ConfigureWarning,"UnableToOpenModuleFile",
827 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
831 % I s M o d u l e T r e e I n s t a n t i a t e d %
835 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
837 % IsModuleTreeInstantiated() determines if the module tree is instantiated.
838 % If not, it instantiates the tree and returns it.
840 % The format of the IsModuleTreeInstantiated() method is:
842 % IsModuleTreeInstantiated()
846 static void *DestroyModuleNode(void *module_info)
854 exception=AcquireExceptionInfo();
855 p=(ModuleInfo *) module_info;
856 if (UnregisterModule(p,exception) == MagickFalse)
857 CatchException(exception);
858 if (p->tag != (char *) NULL)
859 p->tag=DestroyString(p->tag);
860 if (p->path != (char *) NULL)
861 p->path=DestroyString(p->path);
862 exception=DestroyExceptionInfo(exception);
863 return(RelinquishMagickMemory(p));
866 static MagickBooleanType IsModuleTreeInstantiated()
868 if (module_list == (SplayTreeInfo *) NULL)
870 if (module_semaphore == (SemaphoreInfo *) NULL)
871 ActivateSemaphoreInfo(&module_semaphore);
872 LockSemaphoreInfo(module_semaphore);
873 if (module_list == (SplayTreeInfo *) NULL)
884 splay_tree=NewSplayTree(CompareSplayTreeString,
885 (void *(*)(void *)) NULL,DestroyModuleNode);
886 module_info=AcquireModuleInfo((const char *) NULL,"[boot-strap]");
887 module_info->stealth=MagickTrue;
888 status=AddValueToSplayTree(splay_tree,module_info->tag,module_info);
889 if (status == MagickFalse)
890 ThrowFatalException(ResourceLimitFatalError,
891 "MemoryAllocationFailed");
892 if (lt_dlinit() != 0)
893 ThrowFatalException(ModuleFatalError,
894 "UnableToInitializeModuleLoader");
895 module_list=splay_tree;
897 UnlockSemaphoreInfo(module_semaphore);
899 return(module_list != (SplayTreeInfo *) NULL ? MagickTrue : MagickFalse);
903 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
907 % I n v o k e D y n a m i c I m a g e F i l t e r %
911 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
913 % InvokeDynamicImageFilter() invokes a dynamic image filter.
915 % The format of the InvokeDynamicImageFilter module is:
917 % MagickBooleanType InvokeDynamicImageFilter(const char *tag,Image **image,
918 % const int argc,const char **argv,ExceptionInfo *exception)
920 % A description of each parameter follows:
922 % o tag: a character string that represents the name of the particular
925 % o image: the image.
927 % o argc: a pointer to an integer describing the number of elements in the
930 % o argv: a pointer to a text array containing the command line arguments.
932 % o exception: return any errors or warnings in this structure.
935 MagickExport MagickBooleanType InvokeDynamicImageFilter(const char *tag,
936 Image **images,const int argc,const char **argv,ExceptionInfo *exception)
939 name[MagickPathExtent],
940 path[MagickPathExtent];
957 assert(images != (Image **) NULL);
958 assert((*images)->signature == MagickCoreSignature);
959 if ((*images)->debug != MagickFalse)
960 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",
961 (*images)->filename);
962 rights=ReadPolicyRights;
963 if (IsRightsAuthorized(FilterPolicyDomain,rights,tag) == MagickFalse)
966 (void) ThrowMagickException(exception,GetMagickModule(),PolicyError,
967 "NotAuthorized","`%s'",tag);
970 #if !defined(MAGICKCORE_BUILD_MODULES)
975 status=InvokeStaticImageFilter(tag,images,argc,argv,exception);
976 if (status != MagickFalse)
980 TagToFilterModuleName(tag,name);
981 status=GetMagickModulePath(name,MagickImageFilterModule,path,exception);
982 if (status == MagickFalse)
984 (void) ThrowMagickException(exception,GetMagickModule(),ModuleError,
985 "UnableToLoadModule","'%s': %s",name,path);
991 handle=(ModuleHandle) lt_dlopen(path);
992 if (handle == (ModuleHandle) NULL)
994 (void) ThrowMagickException(exception,GetMagickModule(),ModuleError,
995 "UnableToLoadModule","'%s': %s",name,lt_dlerror());
1001 #if !defined(MAGICKCORE_NAMESPACE_PREFIX)
1002 (void) FormatLocaleString(name,MagickPathExtent,"%sImage",tag);
1004 (void) FormatLocaleString(name,MagickPathExtent,"%s%sImage",
1005 MAGICKCORE_NAMESPACE_PREFIX_TAG,tag);
1010 ClearMagickException(exception);
1011 image_filter=(ImageFilterHandler *) lt_dlsym(handle,name);
1012 if (image_filter == (ImageFilterHandler *) NULL)
1013 (void) ThrowMagickException(exception,GetMagickModule(),ModuleError,
1014 "UnableToLoadModule","'%s': %s",name,lt_dlerror());
1020 if ((*images)->debug != MagickFalse)
1021 (void) LogMagickEvent(ModuleEvent,GetMagickModule(),
1022 "Invoking \"%s\" dynamic image filter",tag);
1023 signature=image_filter(images,argc,argv,exception);
1024 if ((*images)->debug != MagickFalse)
1025 (void) LogMagickEvent(ModuleEvent,GetMagickModule(),"\"%s\" completes",
1027 if (signature != MagickImageFilterSignature)
1028 (void) ThrowMagickException(exception,GetMagickModule(),ModuleError,
1029 "ImageFilterSignatureMismatch","'%s': %8lx != %8lx",tag,
1030 (unsigned long) signature,(unsigned long) MagickImageFilterSignature);
1035 if (lt_dlclose(handle) != 0)
1036 (void) ThrowMagickException(exception,GetMagickModule(),ModuleWarning,
1037 "UnableToCloseModule","'%s': %s",name,lt_dlerror());
1038 return(exception->severity < ErrorException ? MagickTrue : MagickFalse);
1042 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1046 % L i s t M o d u l e I n f o %
1050 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1052 % ListModuleInfo() lists the module info to a file.
1054 % The format of the ListModuleInfo module is:
1056 % MagickBooleanType ListModuleInfo(FILE *file,ExceptionInfo *exception)
1058 % A description of each parameter follows.
1060 % o file: An pointer to a FILE.
1062 % o exception: return any errors or warnings in this structure.
1065 MagickExport MagickBooleanType ListModuleInfo(FILE *file,
1066 ExceptionInfo *exception)
1069 filename[MagickPathExtent],
1070 module_path[MagickPathExtent],
1072 path[MagickPathExtent];
1080 if (file == (const FILE *) NULL)
1085 modules=GetModuleList("*",MagickImageCoderModule,&number_modules,exception);
1086 if (modules == (char **) NULL)
1087 return(MagickFalse);
1088 TagToCoderModuleName("magick",filename);
1089 (void) GetMagickModulePath(filename,MagickImageCoderModule,module_path,
1091 GetPathComponent(module_path,HeadPath,path);
1092 (void) FormatLocaleFile(file,"\nPath: %s\n\n",path);
1093 (void) FormatLocaleFile(file,"Image Coder\n");
1094 (void) FormatLocaleFile(file,
1095 "-------------------------------------------------"
1096 "------------------------------\n");
1097 for (i=0; i < (ssize_t) number_modules; i++)
1099 (void) FormatLocaleFile(file,"%s",modules[i]);
1100 (void) FormatLocaleFile(file,"\n");
1102 (void) fflush(file);
1104 Relinquish resources.
1106 for (i=0; i < (ssize_t) number_modules; i++)
1107 modules[i]=DestroyString(modules[i]);
1108 modules=(char **) RelinquishMagickMemory(modules);
1112 modules=GetModuleList("*",MagickImageFilterModule,&number_modules,exception);
1113 if (modules == (char **) NULL)
1114 return(MagickFalse);
1115 TagToFilterModuleName("analyze",filename);
1116 (void) GetMagickModulePath(filename,MagickImageFilterModule,module_path,
1118 GetPathComponent(module_path,HeadPath,path);
1119 (void) FormatLocaleFile(file,"\nPath: %s\n\n",path);
1120 (void) FormatLocaleFile(file,"Image Filter\n");
1121 (void) FormatLocaleFile(file,
1122 "-------------------------------------------------"
1123 "------------------------------\n");
1124 for (i=0; i < (ssize_t) number_modules; i++)
1126 (void) FormatLocaleFile(file,"%s",modules[i]);
1127 (void) FormatLocaleFile(file,"\n");
1129 (void) fflush(file);
1131 Relinquish resources.
1133 for (i=0; i < (ssize_t) number_modules; i++)
1134 modules[i]=DestroyString(modules[i]);
1135 modules=(char **) RelinquishMagickMemory(modules);
1140 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1144 + M o d u l e C o m p o n e n t G e n e s i s %
1148 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1150 % ModuleComponentGenesis() instantiates the module component.
1152 % The format of the ModuleComponentGenesis method is:
1154 % MagickBooleanType ModuleComponentGenesis(void)
1157 MagickPrivate MagickBooleanType ModuleComponentGenesis(void)
1162 if (module_semaphore == (SemaphoreInfo *) NULL)
1163 module_semaphore=AcquireSemaphoreInfo();
1164 status=IsModuleTreeInstantiated();
1169 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1173 + M o d u l e C o m p o n e n t T e r m i n u s %
1177 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1179 % ModuleComponentTerminus() destroys the module component.
1181 % The format of the ModuleComponentTerminus method is:
1183 % ModuleComponentTerminus(void)
1186 MagickPrivate void ModuleComponentTerminus(void)
1188 if (module_semaphore == (SemaphoreInfo *) NULL)
1189 ActivateSemaphoreInfo(&module_semaphore);
1190 DestroyModuleList();
1191 RelinquishSemaphoreInfo(&module_semaphore);
1195 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1199 % O p e n M o d u l e %
1203 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1205 % OpenModule() loads a module, and invokes its registration module. It
1206 % returns MagickTrue on success, and MagickFalse if there is an error.
1208 % The format of the OpenModule module is:
1210 % MagickBooleanType OpenModule(const char *module,ExceptionInfo *exception)
1212 % A description of each parameter follows:
1214 % o module: a character string that indicates the module to load.
1216 % o exception: return any errors or warnings in this structure.
1219 MagickPrivate MagickBooleanType OpenModule(const char *module,
1220 ExceptionInfo *exception)
1223 filename[MagickPathExtent],
1224 module_name[MagickPathExtent],
1225 name[MagickPathExtent],
1226 path[MagickPathExtent];
1240 register const CoderInfo
1247 Assign module name from alias.
1249 assert(module != (const char *) NULL);
1250 module_info=(ModuleInfo *) GetModuleInfo(module,exception);
1251 if (module_info != (ModuleInfo *) NULL)
1253 rights=ReadPolicyRights;
1254 if (IsRightsAuthorized(ModulePolicyDomain,rights,tag) == MagickFalse)
1257 (void) ThrowMagickException(exception,GetMagickModule(),PolicyError,
1258 "NotAuthorized","`%s'",tag);
1259 return(MagickFalse);
1261 (void) CopyMagickString(module_name,module,MagickPathExtent);
1262 p=GetCoderInfo(module,exception);
1263 if (p != (CoderInfo *) NULL)
1264 (void) CopyMagickString(module_name,p->name,MagickPathExtent);
1265 if (GetValueFromSplayTree(module_list,module_name) != (void *) NULL)
1266 return(MagickTrue); /* module already opened, return */
1270 handle=(ModuleHandle) NULL;
1271 TagToCoderModuleName(module_name,filename);
1272 (void) LogMagickEvent(ModuleEvent,GetMagickModule(),
1273 "Searching for module \"%s\" using filename \"%s\"",module_name,filename);
1275 status=GetMagickModulePath(filename,MagickImageCoderModule,path,exception);
1276 if (status == MagickFalse)
1277 return(MagickFalse);
1281 (void) LogMagickEvent(ModuleEvent,GetMagickModule(),
1282 "Opening module at path \"%s\"",path);
1283 handle=(ModuleHandle) lt_dlopen(path);
1284 if (handle == (ModuleHandle) NULL)
1286 (void) ThrowMagickException(exception,GetMagickModule(),ModuleError,
1287 "UnableToLoadModule","'%s': %s",path,lt_dlerror());
1288 return(MagickFalse);
1293 module_info=AcquireModuleInfo(path,module_name);
1294 module_info->handle=handle;
1295 if (RegisterModule(module_info,exception) == (ModuleInfo *) NULL)
1296 return(MagickFalse);
1298 Define RegisterFORMATImage method.
1300 TagToModuleName(module_name,"Register%sImage",name);
1301 module_info->register_module=(size_t (*)(void)) lt_dlsym(handle,name);
1302 if (module_info->register_module == (size_t (*)(void)) NULL)
1304 (void) ThrowMagickException(exception,GetMagickModule(),ModuleError,
1305 "UnableToRegisterImageFormat","'%s': %s",module_name,lt_dlerror());
1306 return(MagickFalse);
1308 (void) LogMagickEvent(ModuleEvent,GetMagickModule(),
1309 "Method \"%s\" in module \"%s\" at address %p",name,module_name,
1310 (void *) module_info->register_module);
1312 Define UnregisterFORMATImage method.
1314 TagToModuleName(module_name,"Unregister%sImage",name);
1315 module_info->unregister_module=(void (*)(void)) lt_dlsym(handle,name);
1316 if (module_info->unregister_module == (void (*)(void)) NULL)
1318 (void) ThrowMagickException(exception,GetMagickModule(),ModuleError,
1319 "UnableToRegisterImageFormat","'%s': %s",module_name,lt_dlerror());
1320 return(MagickFalse);
1322 (void) LogMagickEvent(ModuleEvent,GetMagickModule(),
1323 "Method \"%s\" in module \"%s\" at address %p",name,module_name,
1324 (void *) module_info->unregister_module);
1325 signature=module_info->register_module();
1326 if (signature != MagickImageCoderSignature)
1328 (void) ThrowMagickException(exception,GetMagickModule(),ModuleError,
1329 "ImageCoderSignatureMismatch","'%s': %8lx != %8lx",module_name,
1330 (unsigned long) signature,(unsigned long) MagickImageCoderSignature);
1331 return(MagickFalse);
1337 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1341 % O p e n M o d u l e s %
1345 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1347 % OpenModules() loads all available modules.
1349 % The format of the OpenModules module is:
1351 % MagickBooleanType OpenModules(ExceptionInfo *exception)
1353 % A description of each parameter follows:
1355 % o exception: return any errors or warnings in this structure.
1358 MagickPrivate MagickBooleanType OpenModules(ExceptionInfo *exception)
1372 (void) GetMagickInfo((char *) NULL,exception);
1374 modules=GetModuleList("*",MagickImageCoderModule,&number_modules,exception);
1375 if ((modules == (char **) NULL) || (*modules == (char *) NULL))
1377 if (modules != (char **) NULL)
1378 modules=(char **) RelinquishMagickMemory(modules);
1379 return(MagickFalse);
1381 for (i=0; i < (ssize_t) number_modules; i++)
1382 (void) OpenModule(modules[i],exception);
1384 Relinquish resources.
1386 for (i=0; i < (ssize_t) number_modules; i++)
1387 modules[i]=DestroyString(modules[i]);
1388 modules=(char **) RelinquishMagickMemory(modules);
1393 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1397 % R e g i s t e r M o d u l e %
1401 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1403 % RegisterModule() adds an entry to the module list. It returns a pointer to
1404 % the registered entry on success.
1406 % The format of the RegisterModule module is:
1408 % ModuleInfo *RegisterModule(const ModuleInfo *module_info,
1409 % ExceptionInfo *exception)
1411 % A description of each parameter follows:
1413 % o info: a pointer to the registered entry is returned.
1415 % o module_info: a pointer to the ModuleInfo structure to register.
1417 % o exception: return any errors or warnings in this structure.
1420 static const ModuleInfo *RegisterModule(const ModuleInfo *module_info,
1421 ExceptionInfo *exception)
1426 assert(module_info != (ModuleInfo *) NULL);
1427 assert(module_info->signature == MagickCoreSignature);
1428 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",module_info->tag);
1429 if (module_list == (SplayTreeInfo *) NULL)
1430 return((const ModuleInfo *) NULL);
1431 status=AddValueToSplayTree(module_list,module_info->tag,module_info);
1432 if (status == MagickFalse)
1433 (void) ThrowMagickException(exception,GetMagickModule(),ResourceLimitError,
1434 "MemoryAllocationFailed","`%s'",module_info->tag);
1435 return(module_info);
1439 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1443 % T a g T o C o d e r M o d u l e N a m e %
1447 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1449 % TagToCoderModuleName() munges a module tag and obtains the filename of the
1450 % corresponding module.
1452 % The format of the TagToCoderModuleName module is:
1454 % char *TagToCoderModuleName(const char *tag,char *name)
1456 % A description of each parameter follows:
1458 % o tag: a character string representing the module tag.
1460 % o name: return the module name here.
1463 static void TagToCoderModuleName(const char *tag,char *name)
1465 assert(tag != (char *) NULL);
1466 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",tag);
1467 assert(name != (char *) NULL);
1468 #if defined(MAGICKCORE_LTDL_DELEGATE)
1469 (void) FormatLocaleString(name,MagickPathExtent,"%s.la",tag);
1470 (void) LocaleLower(name);
1472 #if defined(MAGICKCORE_WINDOWS_SUPPORT)
1473 if (LocaleNCompare("IM_MOD_",tag,7) == 0)
1474 (void) CopyMagickString(name,tag,MagickPathExtent);
1478 (void) FormatLocaleString(name,MagickPathExtent,"IM_MOD_DB_%s_.dll",tag);
1480 (void) FormatLocaleString(name,MagickPathExtent,"IM_MOD_RL_%s_.dll",tag);
1488 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1492 % T a g T o F i l t e r M o d u l e N a m e %
1496 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1498 % TagToFilterModuleName() munges a module tag and returns the filename of the
1499 % corresponding filter module.
1501 % The format of the TagToFilterModuleName module is:
1503 % void TagToFilterModuleName(const char *tag,char name)
1505 % A description of each parameter follows:
1507 % o tag: a character string representing the module tag.
1509 % o name: return the filter name here.
1512 static void TagToFilterModuleName(const char *tag,char *name)
1514 assert(tag != (char *) NULL);
1515 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",tag);
1516 assert(name != (char *) NULL);
1517 #if defined(MAGICKCORE_WINDOWS_SUPPORT)
1518 (void) FormatLocaleString(name,MagickPathExtent,"FILTER_%s_.dll",tag);
1519 #elif !defined(MAGICKCORE_LTDL_DELEGATE)
1520 (void) FormatLocaleString(name,MagickPathExtent,"%s.dll",tag);
1522 (void) FormatLocaleString(name,MagickPathExtent,"%s.la",tag);
1527 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1531 % T a g T o M o d u l e N a m e %
1535 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1537 % TagToModuleName() munges the module tag name and returns an upper-case tag
1538 % name as the input string, and a user-provided format.
1540 % The format of the TagToModuleName module is:
1542 % TagToModuleName(const char *tag,const char *format,char *module)
1544 % A description of each parameter follows:
1546 % o tag: the module tag.
1548 % o format: a sprintf-compatible format string containing %s where the
1549 % upper-case tag name is to be inserted.
1551 % o module: pointer to a destination buffer for the formatted result.
1554 static void TagToModuleName(const char *tag,const char *format,char *module)
1557 name[MagickPathExtent];
1559 assert(tag != (const char *) NULL);
1560 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",tag);
1561 assert(format != (const char *) NULL);
1562 assert(module != (char *) NULL);
1563 (void) CopyMagickString(name,tag,MagickPathExtent);
1565 #if !defined(MAGICKCORE_NAMESPACE_PREFIX)
1566 (void) FormatLocaleString(module,MagickPathExtent,format,name);
1570 prefix_format[MagickPathExtent];
1572 (void) FormatLocaleString(prefix_format,MagickPathExtent,"%s%s",
1573 MAGICKCORE_NAMESPACE_PREFIX_TAG,format);
1574 (void) FormatLocaleString(module,MagickPathExtent,prefix_format,name);
1580 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1584 % U n r e g i s t e r M o d u l e %
1588 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1590 % UnregisterModule() unloads a module, and invokes its de-registration module.
1591 % Returns MagickTrue on success, and MagickFalse if there is an error.
1593 % The format of the UnregisterModule module is:
1595 % MagickBooleanType UnregisterModule(const ModuleInfo *module_info,
1596 % ExceptionInfo *exception)
1598 % A description of each parameter follows:
1600 % o module_info: the module info.
1602 % o exception: return any errors or warnings in this structure.
1605 static MagickBooleanType UnregisterModule(const ModuleInfo *module_info,
1606 ExceptionInfo *exception)
1609 Locate and execute UnregisterFORMATImage module.
1611 assert(module_info != (const ModuleInfo *) NULL);
1612 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",module_info->tag);
1613 assert(exception != (ExceptionInfo *) NULL);
1614 if (module_info->unregister_module == NULL)
1616 module_info->unregister_module();
1617 if (lt_dlclose((ModuleHandle) module_info->handle) != 0)
1619 (void) ThrowMagickException(exception,GetMagickModule(),ModuleWarning,
1620 "UnableToCloseModule","'%s': %s",module_info->tag,lt_dlerror());
1621 return(MagickFalse);
1627 #if !defined(MAGICKCORE_BUILD_MODULES)
1629 analyzeImage(Image **,const int,const char **,ExceptionInfo *);
1632 MagickExport MagickBooleanType ListModuleInfo(FILE *magick_unused(file),
1633 ExceptionInfo *magick_unused(exception))
1638 MagickExport MagickBooleanType InvokeDynamicImageFilter(const char *tag,
1639 Image **image,const int argc,const char **argv,ExceptionInfo *exception)
1644 assert(image != (Image **) NULL);
1645 assert((*image)->signature == MagickCoreSignature);
1646 if ((*image)->debug != MagickFalse)
1647 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",(*image)->filename);
1648 rights=ReadPolicyRights;
1649 if (IsRightsAuthorized(FilterPolicyDomain,rights,tag) == MagickFalse)
1652 (void) ThrowMagickException(exception,GetMagickModule(),PolicyError,
1653 "NotAuthorized","`%s'",tag);
1654 return(MagickFalse);
1656 #if defined(MAGICKCORE_BUILD_MODULES)
1666 image_filter=(ImageFilterHandler *) NULL;
1667 if (LocaleCompare("analyze",tag) == 0)
1668 image_filter=(ImageFilterHandler *) analyzeImage;
1669 if (image_filter == (ImageFilterHandler *) NULL)
1670 (void) ThrowMagickException(exception,GetMagickModule(),ModuleError,
1671 "UnableToLoadModule","`%s'",tag);
1677 if ((*image)->debug != MagickFalse)
1678 (void) LogMagickEvent(CoderEvent,GetMagickModule(),
1679 "Invoking \"%s\" static image filter",tag);
1680 signature=image_filter(image,argc,argv,exception);
1681 if ((*image)->debug != MagickFalse)
1682 (void) LogMagickEvent(CoderEvent,GetMagickModule(),"\"%s\" completes",
1684 if (signature != MagickImageFilterSignature)
1686 (void) ThrowMagickException(exception,GetMagickModule(),ModuleError,
1687 "ImageFilterSignatureMismatch","'%s': %8lx != %8lx",tag,
1688 (unsigned long) signature,(unsigned long)
1689 MagickImageFilterSignature);
1690 return(MagickFalse);