/*
Define declarations.
*/
-#define MagicFilename "magic.xml"
#define MagicPattern(magic) (const unsigned char *) (magic), sizeof(magic)-1
\f
/*
Forward declarations.
*/
static MagickBooleanType
- IsMagicCacheInstantiated(ExceptionInfo *),
- LoadMagicCache(LinkedListInfo *,const char *,const char *,const size_t,
- ExceptionInfo *);
+ IsMagicCacheInstantiated(ExceptionInfo *);
\f
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
return((int) (mb->length-ma->length));
}
-static LinkedListInfo *AcquireMagicCache(const char *filename,
- ExceptionInfo *exception)
+static LinkedListInfo *AcquireMagicCache(ExceptionInfo *exception)
{
LinkedListInfo
*cache;
register ssize_t
i;
- /*
- Load external magic map.
- */
cache=NewLinkedList(0);
status=MagickTrue;
-#if !defined(MAGICKCORE_ZERO_CONFIGURATION_SUPPORT)
- {
- char
- path[MagickPathExtent];
-
- const StringInfo
- *option;
-
- LinkedListInfo
- *options;
-
- *path='\0';
- options=GetConfigureOptions(filename,exception);
- option=(const StringInfo *) GetNextValueInLinkedList(options);
- while (option != (const StringInfo *) NULL)
- {
- (void) CopyMagickString(path,GetStringInfoPath(option),MagickPathExtent);
- status&=LoadMagicCache(cache,(const char *)
- GetStringInfoDatum(option),GetStringInfoPath(option),0,exception);
- option=(const StringInfo *) GetNextValueInLinkedList(options);
- }
- options=DestroyConfigureOptions(options);
- }
-#endif
/*
Load built-in magic map.
*/
ActivateSemaphoreInfo(&magic_semaphore);
LockSemaphoreInfo(magic_semaphore);
if (magic_cache == (LinkedListInfo *) NULL)
- magic_cache=AcquireMagicCache(MagicFilename,exception);
+ magic_cache=AcquireMagicCache(exception);
UnlockSemaphoreInfo(magic_semaphore);
}
return(magic_cache != (LinkedListInfo *) NULL ? MagickTrue : MagickFalse);
% %
% %
% %
-+ L o a d M a g i c C a c h e %
-% %
-% %
-% %
-%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-%
-% LoadMagicCache() loads the magic configurations which provides a mapping
-% between magic attributes and a magic name.
-%
-% The format of the LoadMagicCache method is:
-%
-% MagickBooleanType LoadMagicCache(LinkedListInfo *cache,const char *xml,
-% const char *filename,const size_t depth,ExceptionInfo *exception)
-%
-% A description of each parameter follows:
-%
-% o xml: The magic list in XML format.
-%
-% o filename: The magic list filename.
-%
-% o depth: depth of <include /> statements.
-%
-% o exception: return any errors or warnings in this structure.
-%
-*/
-static MagickBooleanType LoadMagicCache(LinkedListInfo *cache,const char *xml,
- const char *filename,const size_t depth,ExceptionInfo *exception)
-{
- char
- keyword[MagickPathExtent],
- *token;
-
- const char
- *q;
-
- MagicInfo
- *magic_info;
-
- MagickStatusType
- status;
-
- size_t
- extent;
-
- /*
- Load the magic map file.
- */
- (void) LogMagickEvent(ConfigureEvent,GetMagickModule(),
- "Loading magic configure file \"%s\" ...",filename);
- if (xml == (char *) NULL)
- return(MagickFalse);
- status=MagickTrue;
- magic_info=(MagicInfo *) NULL;
- token=AcquireString(xml);
- extent=strlen(token)+MagickPathExtent;
- for (q=(char *) xml; *q != '\0'; )
- {
- /*
- Interpret XML.
- */
- GetNextToken(q,&q,extent,token);
- if (*token == '\0')
- break;
- (void) CopyMagickString(keyword,token,MagickPathExtent);
- if (LocaleNCompare(keyword,"<!DOCTYPE",9) == 0)
- {
- /*
- Doctype element.
- */
- while ((LocaleNCompare(q,"]>",2) != 0) && (*q != '\0'))
- GetNextToken(q,&q,extent,token);
- continue;
- }
- if (LocaleNCompare(keyword,"<!--",4) == 0)
- {
- /*
- Comment element.
- */
- while ((LocaleNCompare(q,"->",2) != 0) && (*q != '\0'))
- GetNextToken(q,&q,extent,token);
- continue;
- }
- if (LocaleCompare(keyword,"<include") == 0)
- {
- /*
- Include element.
- */
- while (((*token != '/') && (*(token+1) != '>')) && (*q != '\0'))
- {
- (void) CopyMagickString(keyword,token,MagickPathExtent);
- GetNextToken(q,&q,extent,token);
- if (*token != '=')
- continue;
- GetNextToken(q,&q,extent,token);
- if (LocaleCompare(keyword,"file") == 0)
- {
- if (depth > MagickMaxRecursionDepth)
- (void) ThrowMagickException(exception,GetMagickModule(),
- ConfigureError,"IncludeElementNestedTooDeeply","`%s'",token);
- else
- {
- char
- path[MagickPathExtent],
- *file_xml;
-
- GetPathComponent(filename,HeadPath,path);
- if (*path != '\0')
- (void) ConcatenateMagickString(path,DirectorySeparator,
- MagickPathExtent);
- if (*token == *DirectorySeparator)
- (void) CopyMagickString(path,token,MagickPathExtent);
- else
- (void) ConcatenateMagickString(path,token,MagickPathExtent);
- file_xml=FileToXML(path,~0UL);
- if (xml != (char *) NULL)
- {
- status&=LoadMagicCache(cache,file_xml,path,depth+1,
- exception);
- file_xml=DestroyString(file_xml);
- }
- }
- }
- }
- continue;
- }
- if (LocaleCompare(keyword,"<magic") == 0)
- {
- /*
- Magic element.
- */
- magic_info=(MagicInfo *) AcquireCriticalMemory(sizeof(*magic_info));
- (void) memset(magic_info,0,sizeof(*magic_info));
- magic_info->path=ConstantString(filename);
- magic_info->exempt=MagickFalse;
- magic_info->signature=MagickCoreSignature;
- continue;
- }
- if (magic_info == (MagicInfo *) NULL)
- continue;
- if ((LocaleCompare(keyword,"/>") == 0) ||
- (LocaleCompare(keyword,"</policy>") == 0))
- {
- status=InsertValueInSortedLinkedList(cache,CompareMagickInfoSize,
- NULL,magic_info);
- if (status == MagickFalse)
- (void) ThrowMagickException(exception,GetMagickModule(),
- ResourceLimitError,"MemoryAllocationFailed","`%s'",
- magic_info->name);
- magic_info=(MagicInfo *) NULL;
- continue;
- }
- GetNextToken(q,(const char **) NULL,extent,token);
- if (*token != '=')
- continue;
- GetNextToken(q,&q,extent,token);
- GetNextToken(q,&q,extent,token);
- switch (*keyword)
- {
- case 'N':
- case 'n':
- {
- if (LocaleCompare((char *) keyword,"name") == 0)
- {
- magic_info->name=ConstantString(token);
- break;
- }
- break;
- }
- case 'O':
- case 'o':
- {
- if (LocaleCompare((char *) keyword,"offset") == 0)
- {
- magic_info->offset=(MagickOffsetType) StringToLong(token);
- break;
- }
- break;
- }
- case 'S':
- case 's':
- {
- if (LocaleCompare((char *) keyword,"stealth") == 0)
- {
- magic_info->stealth=IsStringTrue(token);
- break;
- }
- break;
- }
- case 'T':
- case 't':
- {
- if (LocaleCompare((char *) keyword,"target") == 0)
- {
- char
- *p;
-
- register unsigned char
- *r;
-
- size_t
- length;
-
- length=strlen(token);
- magic_info->target=ConstantString(token);
- magic_info->magic=(unsigned char *) ConstantString(token);
- r=magic_info->magic;
- for (p=magic_info->target; *p != '\0'; )
- {
- if (*p == '\\')
- {
- p++;
- if (isdigit((int) ((unsigned char) *p)) != 0)
- {
- char
- *end;
-
- *r++=(unsigned char) strtol(p,&end,8);
- p+=(end-p);
- magic_info->length++;
- continue;
- }
- switch (*p)
- {
- case 'b': *r='\b'; break;
- case 'f': *r='\f'; break;
- case 'n': *r='\n'; break;
- case 'r': *r='\r'; break;
- case 't': *r='\t'; break;
- case 'v': *r='\v'; break;
- case 'a': *r='a'; break;
- case '?': *r='\?'; break;
- default: *r=(unsigned char) (*p); break;
- }
- p++;
- r++;
- magic_info->length++;
- continue;
- }
- else
- if (LocaleNCompare(p,"&",5) == 0)
- (void) CopyMagickString(p+1,p+5,length-magic_info->length);
- *r++=(unsigned char) (*p++);
- magic_info->length++;
- }
- break;
- }
- break;
- }
- default:
- break;
- }
- }
- token=(char *) RelinquishMagickMemory(token);
- return(status != 0 ? MagickTrue : MagickFalse);
-}
-\f
-/*
-%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-% %
-% %
-% %
+ M a g i c C o m p o n e n t G e n e s i s %
% %
% %
projects / imagemagick / commitdiff