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static.c
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% SSSSS TTTTT AAA TTTTT IIIII CCCC %
% SS T A A T I C %
% SSS T AAAAA T I C %
% SS T A A T I C %
% SSSSS T A A T IIIII CCCC %
% %
% %
% MagickCore Static Methods %
% %
% Software Design %
% Cristy %
% March 2000 %
% %
% %
% Copyright @ 1999 ImageMagick Studio LLC, a non-profit organization %
% dedicated to making software imaging solutions freely available. %
% %
% You may not use this file except in compliance with the License. You may %
% obtain a copy of the License at %
% %
% https://imagemagick.org/license/ %
% %
% Unless required by applicable law or agreed to in writing, software %
% distributed under the License is distributed on an "AS IS" BASIS, %
% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. %
% See the License for the specific language governing permissions and %
% limitations under the License. %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
%
%
*/
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/*
Include declarations.
*/
#include "MagickCore/studio.h"
#include "MagickCore/coder.h"
#include "MagickCore/exception-private.h"
#include "MagickCore/image.h"
#include "MagickCore/module.h"
#include "MagickCore/policy.h"
#include "MagickCore/static.h"
#include "MagickCore/string_.h"
#include "coders/coders.h"
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/*
Define declarations.
*/
#define AddMagickCoder(coder) { #coder, MagickFalse, \
Register ## coder ## Image, Unregister ## coder ## Image },
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/*
ImageMagick module stub.
*/
ModuleExport size_t RegisterUndefinedImage(void)
{
return(MagickImageCoderSignature);
}
ModuleExport void UnregisterUndefinedImage(void)
{
}
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/*
ImageMagick modules.
*/
static struct
{
const char
*module;
MagickBooleanType
registered;
size_t
(*register_module)(void);
void
(*unregister_module)(void);
} MagickModules[] = {
#if !defined(MAGICKCORE_BUILD_MODULES)
#include "coders/coders-list.h"
#endif
{ (const char *) NULL, MagickFalse, RegisterUndefinedImage, UnregisterUndefinedImage }
};
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/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
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% I n v o k e S t a t i c I m a g e F i l t e r %
% %
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% InvokeStaticImageFilter() invokes a static image filter.
%
% The format of the InvokeStaticImageFilter method is:
%
% MagickBooleanType InvokeStaticImageFilter(const char *tag,Image **image,
% const int argc,const char **argv)
%
% A description of each parameter follows:
%
% o tag: the module tag.
%
% o image: the image.
%
% o argc: the number of elements in the argument vector.
%
% o argv: A text array containing the command line arguments.
%
% o argv: A text array containing the command line arguments.
%
% o exception: return any errors or warnings in this structure.
%
*/
#if defined(MAGICKCORE_MODULES_SUPPORT)
MagickExport MagickBooleanType InvokeStaticImageFilter(const char *tag,
Image **image,const int argc,const char **argv,ExceptionInfo *exception)
{
PolicyRights
rights;
assert(image != (Image **) NULL);
assert((*image)->signature == MagickCoreSignature);
if (IsEventLogging() != MagickFalse)
(void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",(*image)->filename);
rights=ReadPolicyRights;
if (IsRightsAuthorized(FilterPolicyDomain,rights,tag) == MagickFalse)
ThrowPolicyException(tag,MagickFalse);
#if defined(MAGICKCORE_MODULES_SUPPORT)
(void) tag;
(void) argc;
(void) argv;
(void) exception;
#else
{
extern size_t
analyzeImage(Image **,const int,char **,ExceptionInfo *);
ImageFilterHandler
*image_filter;
image_filter=(ImageFilterHandler *) NULL;
if (LocaleCompare("analyze",tag) == 0)
image_filter=(ImageFilterHandler *) analyzeImage;
if (image_filter == (ImageFilterHandler *) NULL)
(void) ThrowMagickException(exception,GetMagickModule(),ModuleError,
"UnableToLoadModule","`%s'",tag);
else
{
size_t
signature;
if ((*image)->debug != MagickFalse)
(void) LogMagickEvent(TransformEvent,GetMagickModule(),
"Invoking \"%s\" static image filter",tag);
signature=image_filter(image,argc,argv,exception);
if ((*image)->debug != MagickFalse)
(void) LogMagickEvent(TransformEvent,GetMagickModule(),
"\"%s\" completes",tag);
if (signature != MagickImageFilterSignature)
{
(void) ThrowMagickException(exception,GetMagickModule(),ModuleError,
"ImageFilterSignatureMismatch","'%s': %8lx != %8lx",tag,
(unsigned long) signature,(unsigned long)
MagickImageFilterSignature);
return(MagickFalse);
}
}
}
#endif
return(MagickTrue);
}
#endif
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/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% R e g i s t e r S t a t i c M o d u l e %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% RegisterStaticModule() statically registers a module.
%
% The format of the RegisterStaticModule method is:
%
% MagickBooleanType RegisterStaticModule(const char module,
% ExceptionInfo *exception)
%
% A description of each parameter follows:
%
% o module: the want to register.
%
% o exception: return any errors or warnings in this structure.
%
*/
MagickExport MagickBooleanType RegisterStaticModule(const char *module,
ExceptionInfo *exception)
{
char
module_name[MagickPathExtent];
PolicyRights
rights;
const CoderInfo
*p;
size_t
extent;
ssize_t
i;
/*
Assign module name from alias.
*/
assert(module != (const char *) NULL);
(void) CopyMagickString(module_name,module,MagickPathExtent);
p=GetCoderInfo(module,exception);
if (p != (CoderInfo *) NULL)
(void) CopyMagickString(module_name,p->name,MagickPathExtent);
rights=(PolicyRights) (ReadPolicyRights | WritePolicyRights);
if (IsRightsAuthorized(ModulePolicyDomain,rights,module_name) == MagickFalse)
ThrowPolicyException(module_name,MagickFalse);
extent=sizeof(MagickModules)/sizeof(MagickModules[0]);
for (i=0; i < (ssize_t) extent; i++)
if (LocaleCompare(MagickModules[i].module,module_name) == 0)
{
if (MagickModules[i].registered == MagickFalse)
{
(void) (MagickModules[i].register_module)();
MagickModules[i].registered=MagickTrue;
}
return(MagickTrue);
}
return(MagickFalse);
}
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/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% R e g i s t e r S t a t i c M o d u l e s %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% RegisterStaticModules() statically registers all the available module
% handlers.
%
% The format of the RegisterStaticModules method is:
%
% (void) RegisterStaticModules(void)
%
*/
MagickExport void RegisterStaticModules(void)
{
PolicyRights
rights;
size_t
extent;
ssize_t
i;
rights=(PolicyRights) (ReadPolicyRights | WritePolicyRights);
extent=sizeof(MagickModules)/sizeof(MagickModules[0]);
for (i=0; i < (ssize_t) extent; i++)
{
if (MagickModules[i].registered == MagickFalse)
{
if (IsRightsAuthorized(ModulePolicyDomain,rights,MagickModules[i].module) == MagickFalse)
continue;
(void) (MagickModules[i].register_module)();
MagickModules[i].registered=MagickTrue;
}
}
}
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/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% U n r e g i s t e r S t a t i c M o d u l e %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% UnregisterStaticModule() statically unregisters the named module.
%
% The format of the UnregisterStaticModule method is:
%
% MagickBooleanType UnregisterStaticModule(const char *module)
%
% A description of each parameter follows:
%
% o module: the module we want to unregister.
%
*/
MagickExport MagickBooleanType UnregisterStaticModule(const char *module)
{
size_t
extent;
ssize_t
i;
extent=sizeof(MagickModules)/sizeof(MagickModules[0]);
for (i=0; i < (ssize_t) extent; i++)
if (LocaleCompare(MagickModules[i].module,module) == 0)
{
if (MagickModules[i].registered != MagickFalse)
{
(MagickModules[i].unregister_module)();
MagickModules[i].registered=MagickFalse;
}
return(MagickTrue);
}
return(MagickFalse);
}
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/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% U n r e g i s t e r S t a t i c M o d u l e s %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% UnregisterStaticModules() statically unregisters all the available module
% handlers.
%
% The format of the UnregisterStaticModules method is:
%
% UnregisterStaticModules(void)
%
*/
MagickExport void UnregisterStaticModules(void)
{
size_t
extent;
ssize_t
i;
extent=sizeof(MagickModules)/sizeof(MagickModules[0]);
for (i=0; i < (ssize_t) extent; i++)
{
if (MagickModules[i].registered != MagickFalse)
{
(MagickModules[i].unregister_module)();
MagickModules[i].registered=MagickFalse;
}
}
}