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mime.c
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% M M IIIII M M EEEEE %
% MM MM I MM MM E %
% M M M I M M M EEE %
% M M I M M E %
% M M IIIII M M EEEEE %
% %
% %
% MagickCore Mime Methods %
% %
% Software Design %
% July 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/script/license.php %
% %
% 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. %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
%
*/
␌
/*
Include declarations.
*/
#include "MagickCore/studio.h"
#include "MagickCore/blob.h"
#include "MagickCore/client.h"
#include "MagickCore/configure.h"
#include "MagickCore/configure-private.h"
#include "MagickCore/exception.h"
#include "MagickCore/exception-private.h"
#include "MagickCore/linked-list.h"
#include "MagickCore/linked-list-private.h"
#include "MagickCore/memory_.h"
#include "MagickCore/mime.h"
#include "MagickCore/mime-private.h"
#include "MagickCore/option.h"
#include "MagickCore/semaphore.h"
#include "MagickCore/string_.h"
#include "MagickCore/token.h"
#include "MagickCore/utility.h"
#include "MagickCore/utility-private.h"
#include "MagickCore/xml-tree.h"
#include "MagickCore/xml-tree-private.h"
␌
/*
Define declarations.
*/
#define MimeFilename "mime.xml"
#if defined(MAGICKCORE_WINDOWS_SUPPORT)
# if !defined(strcasecmp)
# define strcasecmp _stricmp
# endif
#endif
␌
/*
Typedef declaration.
*/
struct _MimeInfo
{
char
*path,
*type,
*description,
*pattern;
ssize_t
priority;
MagickOffsetType
offset;
size_t
extent;
DataType
data_type;
ssize_t
mask,
value;
EndianType
endian;
size_t
length;
unsigned char
*magic;
MagickBooleanType
stealth;
size_t
signature;
};
␌
/*
Static declarations.
*/
static LinkedListInfo
*mime_cache = (LinkedListInfo *) NULL;
static SemaphoreInfo
*mime_semaphore = (SemaphoreInfo *) NULL;
␌
/*
Forward declarations.
*/
static MagickBooleanType
IsMimeCacheInstantiated(ExceptionInfo *);
#if !MAGICKCORE_ZERO_CONFIGURATION_SUPPORT
static MagickBooleanType
LoadMimeCache(LinkedListInfo *,const char *,const char *,const size_t,
ExceptionInfo *);
#endif
␌
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% A c q u i r e M i m e C a c h e %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% AcquireMimeCache() caches one or more magic configurations which provides
% a mapping between magic attributes and a magic name.
%
% The format of the AcquireMimeCache method is:
%
% LinkedListInfo *AcquireMimeCache(const char *filename,
% ExceptionInfo *exception)
%
% A description of each parameter follows:
%
% o filename: the font file name.
%
% o exception: return any errors or warnings in this structure.
%
*/
MagickExport LinkedListInfo *AcquireMimeCache(const char *filename,
ExceptionInfo *exception)
{
LinkedListInfo
*cache;
cache=NewLinkedList(0);
#if !MAGICKCORE_ZERO_CONFIGURATION_SUPPORT
{
const StringInfo
*option;
LinkedListInfo
*options;
options=GetConfigureOptions(filename,exception);
option=(const StringInfo *) GetNextValueInLinkedList(options);
while (option != (const StringInfo *) NULL)
{
(void) LoadMimeCache(cache,(const char *)
GetStringInfoDatum(option),GetStringInfoPath(option),0,exception);
option=(const StringInfo *) GetNextValueInLinkedList(options);
}
options=DestroyConfigureOptions(options);
}
#else
magick_unreferenced(filename);
magick_unreferenced(exception);
#endif
return(cache);
}
␌
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
+ G e t M i m e I n f o %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% GetMimeInfo() attempts to classify the content to identify which mime type
% is associated with the content, if any.
%
% The format of the GetMimeInfo method is:
%
% const MimeInfo *GetMimeInfo(const char *filename,
% const unsigned char *magic,const size_t length,
% ExceptionInfo *exception)
%
% A description of each parameter follows:
%
% o filename: If we cannot not classify the string, we attempt to classify
% based on the filename (e.g. *.pdf returns application/pdf).
%
% o magic: A binary string generally representing the first few characters
% of the image file or blob.
%
% o length: the length of the binary signature.
%
% o exception: return any errors or warnings in this structure.
%
*/
MagickExport const MimeInfo *GetMimeInfo(const char *filename,
const unsigned char *magic,const size_t length,ExceptionInfo *exception)
{
ElementInfo
*element_info,
*p;
EndianType
endian;
const unsigned char
*r;
ssize_t
i;
ssize_t
value;
unsigned long
lsb_first;
assert(exception != (ExceptionInfo *) NULL);
if (IsMimeCacheInstantiated(exception) == MagickFalse)
return((const MimeInfo *) NULL);
/*
Search for mime tag.
*/
lsb_first=1;
LockSemaphoreInfo(mime_semaphore);
p=GetHeadElementInLinkedList(mime_cache);
if ((magic == (const unsigned char *) NULL) || (length == 0))
{
UnlockSemaphoreInfo(mime_semaphore);
if (p != (ElementInfo *) NULL)
return((const MimeInfo *) p->value);
return((const MimeInfo *) NULL);
}
element_info=(ElementInfo *) NULL;
while (p != (ElementInfo *) NULL)
{
const MimeInfo
*q;
q=(const MimeInfo *) p->value;
assert(q->offset >= 0);
if (element_info != (const ElementInfo *) NULL)
if (q->priority > ((const MimeInfo *) element_info->value)->priority)
{
p=p->next;
continue;
}
if ((q->pattern != (char *) NULL) && (filename != (char *) NULL))
{
if (GlobExpression(filename,q->pattern,MagickFalse) != MagickFalse)
element_info=p;
p=p->next;
continue;
}
switch (q->data_type)
{
case ByteData:
{
if ((size_t) (q->offset+4) > length)
break;
r=magic+q->offset;
value=(ssize_t) (*r++);
if (q->mask == 0)
{
if (q->value == value)
element_info=p;
}
else
{
if ((q->value & q->mask) == value)
element_info=p;
}
break;
}
case ShortData:
{
if ((size_t) (q->offset+4) > length)
break;
r=magic+q->offset;
endian=q->endian;
if (q->endian == UndefinedEndian)
endian=(*(char *) &lsb_first) == 1 ? LSBEndian : MSBEndian;
if (endian == LSBEndian)
{
value=(ssize_t) (*r++);
value|=(*r++) << 8;
}
else
{
value=(ssize_t) (*r++) << 8;
value|=(*r++);
}
if (q->mask == 0)
{
if (q->value == value)
element_info=p;
}
else
{
if ((q->value & q->mask) == value)
element_info=p;
}
break;
}
case LongData:
{
if ((size_t) (q->offset+4) > length)
break;
r=magic+q->offset;
endian=q->endian;
if (q->endian == UndefinedEndian)
endian=(*(char *) &lsb_first) == 1 ? LSBEndian : MSBEndian;
if (endian == LSBEndian)
{
value=(ssize_t) (*r++);
value|=((ssize_t) *r++) << 8;
value|=((ssize_t) *r++) << 16;
value|=((ssize_t) *r++) << 24;
}
else
{
value=(ssize_t) (*r++) << 24;
value|=((ssize_t) *r++) << 16;
value|=((ssize_t) *r++) << 8;
value|=((ssize_t) *r++);
}
if (q->mask == 0)
{
if (q->value == value)
element_info=p;
}
else
{
if ((q->value & q->mask) == value)
element_info=p;
}
break;
}
case StringData:
default:
{
for (i=0; i <= (ssize_t) q->extent; i++)
{
if ((size_t) (q->offset+i+(ssize_t) q->length) > length)
break;
if (memcmp(magic+q->offset+i,q->magic,q->length) == 0)
{
element_info=p;
break;
}
}
break;
}
}
p=p->next;
}
if (element_info != (ElementInfo *) NULL)
SetHeadElementInLinkedList(mime_cache,element_info);
UnlockSemaphoreInfo(mime_semaphore);
if (element_info == (ElementInfo *) NULL)
return((const MimeInfo *) NULL);
return((const MimeInfo *) element_info->value);
}
␌
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% G e t M i m e I n f o L i s t %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% GetMimeInfoList() returns any image aliases that match the specified
% pattern.
%
% The magic of the GetMimeInfoList function is:
%
% const MimeInfo **GetMimeInfoList(const char *pattern,
% size_t *number_aliases,ExceptionInfo *exception)
%
% A description of each parameter follows:
%
% o pattern: Specifies a pointer to a text string containing a pattern.
%
% o number_aliases: This integer returns the number of magics in the
% list.
%
% o exception: return any errors or warnings in this structure.
%
*/
#if defined(__cplusplus) || defined(c_plusplus)
extern "C" {
#endif
static int MimeInfoCompare(const void *x,const void *y)
{
const MimeInfo
**p,
**q;
p=(const MimeInfo **) x,
q=(const MimeInfo **) y;
if (strcasecmp((*p)->path,(*q)->path) == 0)
return(strcasecmp((*p)->type,(*q)->type));
return(strcasecmp((*p)->path,(*q)->path));
}
#if defined(__cplusplus) || defined(c_plusplus)
}
#endif
MagickExport const MimeInfo **GetMimeInfoList(const char *pattern,
size_t *number_aliases,ExceptionInfo *exception)
{
const MimeInfo
**aliases;
ElementInfo
*p;
ssize_t
i;
assert(pattern != (char *) NULL);
assert(number_aliases != (size_t *) NULL);
if (IsEventLogging() != MagickFalse)
(void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",pattern);
*number_aliases=0;
if (IsMimeCacheInstantiated(exception) == MagickFalse)
return((const MimeInfo **) NULL);
aliases=(const MimeInfo **) AcquireQuantumMemory((size_t)
GetNumberOfElementsInLinkedList(mime_cache)+1UL,sizeof(*aliases));
if (aliases == (const MimeInfo **) NULL)
return((const MimeInfo **) NULL);
LockSemaphoreInfo(mime_semaphore);
p=GetHeadElementInLinkedList(mime_cache);
for (i=0; p != (ElementInfo *) NULL; )
{
MimeInfo
*mime_info;
mime_info=(MimeInfo *) p->value;
if ((mime_info->stealth == MagickFalse) &&
(GlobExpression(mime_info->type,pattern,MagickFalse) != MagickFalse))
aliases[i++]=mime_info;
p=p->next;
}
UnlockSemaphoreInfo(mime_semaphore);
if (i == 0)
aliases=(const MimeInfo **) RelinquishMagickMemory((void *) aliases);
else
{
qsort((void *) aliases,(size_t) i,sizeof(*aliases),MimeInfoCompare);
aliases[i]=(MimeInfo *) NULL;
}
*number_aliases=(size_t) i;
return(aliases);
}
␌
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% G e t M i m e L i s t %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% GetMimeList() returns any image format alias that matches the specified
% pattern.
%
% The format of the GetMimeList function is:
%
% char **GetMimeList(const char *pattern,size_t *number_aliases,
% ExceptionInfo *exception)
%
% A description of each parameter follows:
%
% o pattern: Specifies a pointer to a text string containing a pattern.
%
% o number_aliases: This integer returns the number of image format aliases
% in the list.
%
% o exception: return any errors or warnings in this structure.
%
*/
#if defined(__cplusplus) || defined(c_plusplus)
extern "C" {
#endif
static int MimeCompare(const void *x,const void *y)
{
char
*p,
*q;
p=(char *) x;
q=(char *) y;
return(strcasecmp(p,q));
}
#if defined(__cplusplus) || defined(c_plusplus)
}
#endif
MagickExport char **GetMimeList(const char *pattern,
size_t *number_aliases,ExceptionInfo *exception)
{
char
**aliases;
ElementInfo
*p;
ssize_t
i;
assert(pattern != (char *) NULL);
assert(number_aliases != (size_t *) NULL);
if (IsEventLogging() != MagickFalse)
(void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",pattern);
*number_aliases=0;
if (IsMimeCacheInstantiated(exception) == MagickFalse)
return((char **) NULL);
aliases=(char **) AcquireQuantumMemory((size_t)
GetNumberOfElementsInLinkedList(mime_cache)+1UL,sizeof(*aliases));
if (aliases == (char **) NULL)
return((char **) NULL);
LockSemaphoreInfo(mime_semaphore);
p=GetHeadElementInLinkedList(mime_cache);
for (i=0; p != (ElementInfo *) NULL; )
{
const MimeInfo
*mime_info;
mime_info=(const MimeInfo *) p->value;
if ((mime_info->stealth == MagickFalse) &&
(GlobExpression(mime_info->type,pattern,MagickFalse) != MagickFalse))
aliases[i++]=ConstantString(mime_info->type);
p=p->next;
}
UnlockSemaphoreInfo(mime_semaphore);
if (i == 0)
aliases=(char **) RelinquishMagickMemory(aliases);
else
{
qsort((void *) aliases,(size_t) i,sizeof(*aliases),MimeCompare);
aliases[i]=(char *) NULL;
}
*number_aliases=(size_t) i;
return(aliases);
}
␌
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% G e t M i m e D e s c r i p t i o n %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% GetMimeDescription() returns the mime type description.
%
% The format of the GetMimeDescription method is:
%
% const char *GetMimeDescription(const MimeInfo *mime_info)
%
% A description of each parameter follows:
%
% o mime_info: The magic info.
%
*/
MagickExport const char *GetMimeDescription(const MimeInfo *mime_info)
{
assert(mime_info != (MimeInfo *) NULL);
assert(mime_info->signature == MagickCoreSignature);
if (IsEventLogging() != MagickFalse)
(void) LogMagickEvent(TraceEvent,GetMagickModule(),"...");
return(mime_info->description);
}
␌
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% G e t M i m e T y p e %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% GetMimeType() returns the mime type.
%
% The format of the GetMimeType method is:
%
% const char *GetMimeType(const MimeInfo *mime_info)
%
% A description of each parameter follows:
%
% o mime_info: The magic info.
%
*/
MagickExport const char *GetMimeType(const MimeInfo *mime_info)
{
assert(mime_info != (MimeInfo *) NULL);
assert(mime_info->signature == MagickCoreSignature);
if (IsEventLogging() != MagickFalse)
(void) LogMagickEvent(TraceEvent,GetMagickModule(),"...");
return(mime_info->type);
}
␌
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
+ I s M i m e C a c h e I n s t a n t i a t e d %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% IsMimeCacheInstantiated() determines if the mime list is instantiated. If
% not, it instantiates the list and returns it.
%
% The format of the IsMimeInstantiated method is:
%
% MagickBooleanType IsMimeCacheInstantiated(ExceptionInfo *exception)
%
% A description of each parameter follows.
%
% o exception: return any errors or warnings in this structure.
%
*/
static MagickBooleanType IsMimeCacheInstantiated(ExceptionInfo *exception)
{
if (mime_cache == (LinkedListInfo *) NULL)
{
if (mime_semaphore == (SemaphoreInfo *) NULL)
ActivateSemaphoreInfo(&mime_semaphore);
LockSemaphoreInfo(mime_semaphore);
if (mime_cache == (LinkedListInfo *) NULL)
mime_cache=AcquireMimeCache(MimeFilename,exception);
UnlockSemaphoreInfo(mime_semaphore);
}
return(mime_cache != (LinkedListInfo *) NULL ? MagickTrue : MagickFalse);
}
␌
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% L i s t M i m e I n f o %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% ListMimeInfo() lists the magic info to a file.
%
% The format of the ListMimeInfo method is:
%
% MagickBooleanType ListMimeInfo(FILE *file,ExceptionInfo *exception)
%
% A description of each parameter follows.
%
% o file: An pointer to a FILE.
%
% o exception: return any errors or warnings in this structure.
%
*/
MagickExport MagickBooleanType ListMimeInfo(FILE *file,ExceptionInfo *exception)
{
const char
*path;
const MimeInfo
**mime_info;
ssize_t
i;
size_t
number_aliases;
ssize_t
j;
if (file == (const FILE *) NULL)
file=stdout;
mime_info=GetMimeInfoList("*",&number_aliases,exception);
if (mime_info == (const MimeInfo **) NULL)
return(MagickFalse);
j=0;
path=(const char *) NULL;
for (i=0; i < (ssize_t) number_aliases; i++)
{
if (mime_info[i]->stealth != MagickFalse)
continue;
if ((path == (const char *) NULL) ||
(strcasecmp(path,mime_info[i]->path) != 0))
{
if (mime_info[i]->path != (char *) NULL)
(void) FormatLocaleFile(file,"\nPath: %s\n\n",mime_info[i]->path);
(void) FormatLocaleFile(file,"Type Description\n");
(void) FormatLocaleFile(file,
"-------------------------------------------------"
"------------------------------\n");
}
path=mime_info[i]->path;
(void) FormatLocaleFile(file,"%s",mime_info[i]->type);
if (strlen(mime_info[i]->type) <= 25)
{
for (j=(ssize_t) strlen(mime_info[i]->type); j <= 27; j++)
(void) FormatLocaleFile(file," ");
}
else
{
(void) FormatLocaleFile(file,"\n");
for (j=0; j <= 27; j++)
(void) FormatLocaleFile(file," ");
}
if (mime_info[i]->description != (char *) NULL)
(void) FormatLocaleFile(file,"%s",mime_info[i]->description);
(void) FormatLocaleFile(file,"\n");
}
(void) fflush(file);
mime_info=(const MimeInfo **) RelinquishMagickMemory((void *) mime_info);
return(MagickTrue);
}
␌
#if !MAGICKCORE_ZERO_CONFIGURATION_SUPPORT
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
+ L o a d M i m e C a c h e %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% LoadMimeCache() loads the mime configurations which provides a mapping
% between mime attributes and a mime name.
%
% The format of the LoadMimeCache method is:
%
% MagickBooleanType LoadMimeCache(LinkedListInfo *cache,const char *xml,
% const char *filename,const size_t depth,ExceptionInfo *exception)
%
% A description of each parameter follows:
%
% o xml: The mime list in XML format.
%
% o filename: The mime list filename.
%
% o depth: depth of <include /> statements.
%
% o exception: return any errors or warnings in this structure.
%
*/
static MagickBooleanType LoadMimeCache(LinkedListInfo *cache,const char *xml,
const char *filename,const size_t depth,ExceptionInfo *exception)
{
const char
*attribute;
MimeInfo
*mime_info = (MimeInfo *) NULL;
MagickStatusType
status;
XMLTreeInfo
*mime,
*mime_map,
*include;
/*
Load the mime map file.
*/
(void) LogMagickEvent(ConfigureEvent,GetMagickModule(),
"Loading mime map \"%s\" ...",filename);
if (xml == (const char *) NULL)
return(MagickFalse);
mime_map=NewXMLTree(xml,exception);
if (mime_map == (XMLTreeInfo *) NULL)
return(MagickFalse);
status=MagickTrue;
include=GetXMLTreeChild(mime_map,"include");
while (include != (XMLTreeInfo *) NULL)
{
/*
Process include element.
*/
attribute=GetXMLTreeAttribute(include,"file");
if (attribute != (const char *) NULL)
{
if (depth > MagickMaxRecursionDepth)
(void) ThrowMagickException(exception,GetMagickModule(),
ConfigureError,"IncludeElementNestedTooDeeply","`%s'",filename);
else
{
char
path[MagickPathExtent],
*file_xml;
GetPathComponent(filename,HeadPath,path);
if (*path != '\0')
(void) ConcatenateMagickString(path,DirectorySeparator,
MagickPathExtent);
if (*attribute == *DirectorySeparator)
(void) CopyMagickString(path,attribute,MagickPathExtent);
else
(void) ConcatenateMagickString(path,attribute,MagickPathExtent);
file_xml=FileToXML(path,~0UL);
if (file_xml != (char *) NULL)
{
status&=(MagickStatusType) LoadMimeCache(cache,file_xml,path,
depth+1,exception);
file_xml=DestroyString(file_xml);
}
}
}
include=GetNextXMLTreeTag(include);
}
mime=GetXMLTreeChild(mime_map,"mime");
while (mime != (XMLTreeInfo *) NULL)
{
/*
Process mime element.
*/
mime_info=(MimeInfo *) AcquireCriticalMemory(sizeof(*mime_info));
(void) memset(mime_info,0,sizeof(*mime_info));
mime_info->path=ConstantString(filename);
mime_info->signature=MagickCoreSignature;
attribute=GetXMLTreeAttribute(mime,"data-type");
if (attribute != (const char *) NULL)
mime_info->data_type=(DataType) ParseCommandOption(MagickDataTypeOptions,
MagickTrue,attribute);
attribute=GetXMLTreeAttribute(mime,"description");
if (attribute != (const char *) NULL)
mime_info->description=ConstantString(attribute);
attribute=GetXMLTreeAttribute(mime,"endian");
if (attribute != (const char *) NULL)
mime_info->endian=(EndianType) ParseCommandOption(MagickEndianOptions,
MagickTrue,attribute);
attribute=GetXMLTreeAttribute(mime,"magic");
if (attribute != (const char *) NULL)
{
char
*token;
const char
*p;
unsigned char
*q;
token=AcquireString(attribute);
(void) SubstituteString((char **) &token,"&lt;","<");
(void) SubstituteString((char **) &token,"&amp;","&");
(void) SubstituteString((char **) &token,"&quot;","\"");
(void) SubstituteString((char **) &token,"&apos;","'");
mime_info->magic=(unsigned char *) AcquireString(token);
q=mime_info->magic;
for (p=token; *p != '\0'; )
{
if (*p == '\\')
{
p++;
if (isdigit((int) ((unsigned char) *p)) != 0)
{
char
*end;
*q++=(unsigned char) strtol(p,&end,8);
p+=(ptrdiff_t) (end-p);
mime_info->length++;
continue;
}
switch (*p)
{
case 'b': *q='\b'; break;
case 'f': *q='\f'; break;
case 'n': *q='\n'; break;
case 'r': *q='\r'; break;
case 't': *q='\t'; break;
case 'v': *q='\v'; break;
case 'a': *q='a'; break;
case '?': *q='\?'; break;
default: *q=(unsigned char) (*p); break;
}
p++;
q++;
mime_info->length++;
continue;
}
*q++=(unsigned char) (*p++);
mime_info->length++;
}
token=DestroyString(token);
if (mime_info->data_type != StringData)
mime_info->value=(ssize_t) strtoul((char *) mime_info->magic,
(char **) NULL,0);
}
attribute=GetXMLTreeAttribute(mime,"mask");
if (attribute != (const char *) NULL)
mime_info->mask=(ssize_t) strtoul(attribute,(char **) NULL,0);
attribute=GetXMLTreeAttribute(mime,"offset");
if (attribute != (const char *) NULL)
{
char
*c;
mime_info->offset=(MagickOffsetType) strtol(attribute,&c,0);
if (*c == ':')
mime_info->extent=(size_t) strtol(c+1,(char **) NULL,0);
}
attribute=GetXMLTreeAttribute(mime,"pattern");
if (attribute != (const char *) NULL)
mime_info->pattern=ConstantString(attribute);
attribute=GetXMLTreeAttribute(mime,"priority");
if (attribute != (const char *) NULL)
mime_info->priority=(ssize_t) strtol(attribute,(char **) NULL,0);
attribute=GetXMLTreeAttribute(mime,"stealth");
if (attribute != (const char *) NULL)
mime_info->stealth=IsStringTrue(attribute);
attribute=GetXMLTreeAttribute(mime,"type");
if (attribute != (const char *) NULL)
mime_info->type=ConstantString(attribute);
status=AppendValueToLinkedList(cache,mime_info);
if (status == MagickFalse)
(void) ThrowMagickException(exception,GetMagickModule(),
ResourceLimitError,"MemoryAllocationFailed","`%s'",filename);
mime=GetNextXMLTreeTag(mime);
}
mime_map=DestroyXMLTree(mime_map);
return(status != 0 ? MagickTrue : MagickFalse);
}
#endif
␌
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
+ M a g i c k T o M i m e %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% MagickToMime() returns the officially registered (or de facto) MIME
% media-type corresponding to a magick string. If there is no registered
% media-type, then the string "image/x-magick" (all lower case) is returned.
% The returned string must be deallocated by the user.
%
% The format of the MagickToMime method is:
%
% char *MagickToMime(const char *magick)
%
% A description of each parameter follows.
%
% o magick: ImageMagick format specification "magick" tag.
%
*/
MagickExport char *MagickToMime(const char *magick)
{
char
filename[MagickPathExtent],
media[MagickPathExtent];
const MimeInfo
*mime_info;
ExceptionInfo
*exception;
(void) FormatLocaleString(filename,MagickPathExtent,"file.%s",magick);
LocaleLower(filename);
exception=AcquireExceptionInfo();
mime_info=GetMimeInfo(filename,(unsigned char *) " ",1,exception);
exception=DestroyExceptionInfo(exception);
if (mime_info != (const MimeInfo *) NULL)
return(ConstantString(GetMimeType(mime_info)));
(void) FormatLocaleString(media,MagickPathExtent,"image/x-%s",magick);
LocaleLower(media+8);
return(ConstantString(media));
}
␌
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
+ M i m e C o m p o n e n t G e n e s i s %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% MimeComponentGenesis() instantiates the mime component.
%
% The format of the MimeComponentGenesis method is:
%
% MagickBooleanType MimeComponentGenesis(void)
%
*/
MagickPrivate MagickBooleanType MimeComponentGenesis(void)
{
if (mime_semaphore == (SemaphoreInfo *) NULL)
mime_semaphore=AcquireSemaphoreInfo();
return(MagickTrue);
}
␌
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
+ M i m e C o m p o n e n t T e r m i n u s %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% MimeComponentTerminus() destroys the mime component.
%
% The format of the MimeComponentTerminus method is:
%
% MimeComponentTerminus(void)
%
*/
static void *DestroyMimeElement(void *mime_info)
{
MimeInfo
*p;
p=(MimeInfo *) mime_info;
if (p->magic != (unsigned char *) NULL)
p->magic=(unsigned char *) RelinquishMagickMemory(p->magic);
if (p->pattern != (char *) NULL)
p->pattern=DestroyString(p->pattern);
if (p->description != (char *) NULL)
p->description=DestroyString(p->description);
if (p->type != (char *) NULL)
p->type=DestroyString(p->type);
if (p->path != (char *) NULL)
p->path=DestroyString(p->path);
p=(MimeInfo *) RelinquishMagickMemory(p);
return((void *) NULL);
}
MagickPrivate void MimeComponentTerminus(void)
{
if (mime_semaphore == (SemaphoreInfo *) NULL)
ActivateSemaphoreInfo(&mime_semaphore);
LockSemaphoreInfo(mime_semaphore);
if (mime_cache != (LinkedListInfo *) NULL)
mime_cache=DestroyLinkedList(mime_cache,DestroyMimeElement);
UnlockSemaphoreInfo(mime_semaphore);
RelinquishSemaphoreInfo(&mime_semaphore);
}
SemaphoreInfo
Definition semaphore.c:61
_ElementInfo
Definition draw.c:133
_ExceptionInfo
Definition exception.h:102
_LinkedListInfo
Definition linked-list.c:61
_MimeInfo
Definition mime.c:76
_StringInfo
Definition string_.h:28
_XMLTreeInfo
Definition xml-tree.c:78