1090 lines
37 KiB
C
1090 lines
37 KiB
C
/*
|
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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% %
|
||
% %
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||
% %
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% M M AAA GGGG IIIII CCCC %
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% MM MM A A G I C %
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% M M M AAAAA G GGG I C %
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% M M A A G G I C %
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% M M A A GGGG IIIII CCCC %
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% %
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% %
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% MagickCore Image Magic Methods %
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% %
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% Software Design %
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% Bob Friesenhahn %
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% July 2000 %
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% %
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% %
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% Copyright 1999-2021 ImageMagick Studio LLC, a non-profit organization %
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% dedicated to making software imaging solutions freely available. %
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% %
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% You may not use this file except in compliance with the License. You may %
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% obtain a copy of the License at %
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% %
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% https://imagemagick.org/script/license.php %
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% %
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% Unless required by applicable law or agreed to in writing, software %
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% distributed under the License is distributed on an "AS IS" BASIS, %
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% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. %
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% See the License for the specific language governing permissions and %
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% limitations under the License. %
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% %
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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%
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%
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*/
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/*
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Include declarations.
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*/
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#include "magick/studio.h"
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#include "magick/blob.h"
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#include "magick/client.h"
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#include "magick/configure.h"
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#include "magick/exception.h"
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#include "magick/exception-private.h"
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#include "magick/hashmap.h"
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#include "magick/magic.h"
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#include "magick/memory_.h"
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#include "magick/semaphore.h"
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#include "magick/string_.h"
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#include "magick/string-private.h"
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#include "magick/token.h"
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#include "magick/utility.h"
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#include "magick/xml-tree.h"
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#include "magick/xml-tree-private.h"
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||
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/*
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||
Define declarations.
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||
*/
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#define MagicFilename "magic.xml"
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#define MagicPattern(magic) (const unsigned char *) (magic), sizeof(magic)-1
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||
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/*
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Typedef declarations.
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*/
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typedef struct _MagicMapInfo
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{
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const char
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||
name[10];
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||
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const MagickOffsetType
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||
offset;
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||
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const unsigned char
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||
*const magic;
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||
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const size_t
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||
length;
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} MagicMapInfo;
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||
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/*
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Static declarations.
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*/
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static const MagicMapInfo
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MagicMap[] =
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{
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{ "8BIMWTEXT", 0, MagicPattern("8\000B\000I\000M\000#") },
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{ "8BIMTEXT", 0, MagicPattern("8BIM#") },
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{ "8BIM", 0, MagicPattern("8BIM") },
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{ "BMP", 0, MagicPattern("BA") },
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{ "BMP", 0, MagicPattern("BM") },
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{ "BMP", 0, MagicPattern("CI") },
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{ "BMP", 0, MagicPattern("CP") },
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{ "BMP", 0, MagicPattern("IC") },
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{ "PICT", 0, MagicPattern("PICT") },
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||
{ "BMP", 0, MagicPattern("PI") },
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{ "CALS", 21, MagicPattern("version: MIL-STD-1840") },
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{ "CALS", 0, MagicPattern("srcdocid:") },
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{ "CALS", 9, MagicPattern("srcdocid:") },
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{ "CALS", 8, MagicPattern("rorient:") },
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||
{ "CGM", 0, MagicPattern("BEGMF") },
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{ "CIN", 0, MagicPattern("\200\052\137\327") },
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{ "CRW", 0, MagicPattern("II\x1a\x00\x00\x00HEAPCCDR") },
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||
{ "DCM", 128, MagicPattern("DICM") },
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||
{ "DCX", 0, MagicPattern("\261\150\336\72") },
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||
{ "DIB", 0, MagicPattern("\050\000") },
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||
{ "DDS", 0, MagicPattern("DDS ") },
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{ "DJVU", 0, MagicPattern("AT&TFORM") },
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{ "DOT", 0, MagicPattern("digraph") },
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||
{ "DPX", 0, MagicPattern("SDPX") },
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||
{ "DPX", 0, MagicPattern("XPDS") },
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{ "EMF", 40, MagicPattern("\040\105\115\106\000\000\001\000") },
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||
{ "EPT", 0, MagicPattern("\305\320\323\306") },
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{ "EXR", 0, MagicPattern("\166\057\061\001") },
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{ "FAX", 0, MagicPattern("DFAX") },
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{ "FIG", 0, MagicPattern("#FIG") },
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{ "FITS", 0, MagicPattern("IT0") },
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{ "FITS", 0, MagicPattern("SIMPLE") },
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||
{ "FLIF", 0, MagicPattern("FLIF") },
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||
{ "GIF", 0, MagicPattern("GIF8") },
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||
{ "GPLT", 0, MagicPattern("#!/usr/local/bin/gnuplot") },
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||
{ "HDF", 1, MagicPattern("HDF") },
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||
{ "HDR", 0, MagicPattern("#?RADIANCE") },
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||
{ "HDR", 0, MagicPattern("#?RGBE") },
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||
{ "HEIC", 4, MagicPattern("ftypavif") },
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||
{ "HEIC", 4, MagicPattern("ftypheic") },
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||
{ "HEIC", 4, MagicPattern("ftypheix") },
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||
{ "HEIC", 4, MagicPattern("ftypmif1") },
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||
{ "HPGL", 0, MagicPattern("IN;") },
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||
{ "HTML", 1, MagicPattern("HTML") },
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||
{ "HTML", 1, MagicPattern("html") },
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||
{ "ILBM", 8, MagicPattern("ILBM") },
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||
{ "IPTCWTEXT", 0, MagicPattern("\062\000#\000\060\000=\000\042\000&\000#\000\060\000;\000&\000#\000\062\000;\000\042\000") },
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||
{ "IPTCTEXT", 0, MagicPattern("2#0=\042�\042") },
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||
{ "IPTC", 0, MagicPattern("\034\002") },
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||
{ "JNG", 0, MagicPattern("\213JNG\r\n\032\n") },
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{ "JPEG", 0, MagicPattern("\377\330\377") },
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{ "J2K", 0, MagicPattern("\xff\x4f\xff\x51") },
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||
{ "JPC", 0, MagicPattern("\x0d\x0a\x87\x0a") },
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||
{ "JP2", 0, MagicPattern("\x00\x00\x00\x0c\x6a\x50\x20\x20\x0d\x0a\x87\x0a") },
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||
{ "MAT", 0, MagicPattern("MATLAB 5.0 MAT-file,") },
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{ "MIFF", 0, MagicPattern("Id=ImageMagick") },
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{ "MIFF", 0, MagicPattern("id=ImageMagick") },
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{ "MNG", 0, MagicPattern("\212MNG\r\n\032\n") },
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{ "MPC", 0, MagicPattern("id=MagickCache") },
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{ "MPEG", 0, MagicPattern("\000\000\001\263") },
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{ "MRW", 0, MagicPattern("\x00MRM") },
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{ "ORF", 0, MagicPattern("IIRO\x08\x00\x00\x00") },
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{ "PCD", 2048, MagicPattern("PCD_") },
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{ "PCL", 0, MagicPattern("\033E\033") },
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{ "PCX", 0, MagicPattern("\012\002") },
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{ "PCX", 0, MagicPattern("\012\005") },
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{ "PDB", 60, MagicPattern("vIMGView") },
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{ "PDF", 0, MagicPattern("%PDF-") },
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{ "PES", 0, MagicPattern("#PES") },
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{ "PFA", 0, MagicPattern("%!PS-AdobeFont-1.0") },
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{ "PFB", 6, MagicPattern("%!PS-AdobeFont-1.0") },
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{ "PGX", 0, MagicPattern("PG ML") },
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{ "PGX", 0, MagicPattern("PG LM") },
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{ "PICT", 522, MagicPattern("\000\021\002\377\014\000") },
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{ "PNG", 0, MagicPattern("\211PNG\r\n\032\n") },
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{ "PBM", 0, MagicPattern("P1") },
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{ "PGM", 0, MagicPattern("P2") },
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{ "PPM", 0, MagicPattern("P3") },
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||
{ "PBM", 0, MagicPattern("P4") },
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||
{ "PGM", 0, MagicPattern("P5") },
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||
{ "PPM", 0, MagicPattern("P6") },
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||
{ "PAM", 0, MagicPattern("P7") },
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||
{ "PFM", 0, MagicPattern("PF") },
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||
{ "PFM", 0, MagicPattern("Pf") },
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{ "PS", 0, MagicPattern("%!") },
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{ "PS", 0, MagicPattern("\004%!") },
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{ "PS", 0, MagicPattern("\305\320\323\306") },
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{ "PSB", 0, MagicPattern("8BPB") },
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||
{ "PSD", 0, MagicPattern("8BPS") },
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{ "PWP", 0, MagicPattern("SFW95") },
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{ "RAF", 0, MagicPattern("FUJIFILMCCD-RAW ") },
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{ "RLE", 0, MagicPattern("\122\314") },
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{ "SCT", 0, MagicPattern("CT") },
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{ "SFW", 0, MagicPattern("SFW94") },
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{ "SGI", 0, MagicPattern("\001\332") },
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{ "SUN", 0, MagicPattern("\131\246\152\225") },
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{ "SVG", 1, MagicPattern("?XML") },
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{ "SVG", 1, MagicPattern("?xml") },
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{ "SVG", 1, MagicPattern("SVG") },
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{ "SVG", 1, MagicPattern("svg") },
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{ "TIFF", 0, MagicPattern("\115\115\000\052") },
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{ "TIFF", 0, MagicPattern("\111\111\052\000") },
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{ "TIFF64", 0, MagicPattern("\115\115\000\053\000\010\000\000") },
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{ "TIFF64", 0, MagicPattern("\111\111\053\000\010\000\000\000") },
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{ "TTF", 0, MagicPattern("\000\001\000\000\000") },
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{ "TXT", 0, MagicPattern("# ImageMagick pixel enumeration:") },
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{ "VICAR", 0, MagicPattern("LBLSIZE") },
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{ "VICAR", 0, MagicPattern("NJPL1I") },
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{ "VIFF", 0, MagicPattern("\253\001") },
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{ "WEBP", 8, MagicPattern("WEBP") },
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{ "WMF", 0, MagicPattern("\327\315\306\232") },
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{ "WMF", 0, MagicPattern("\001\000\011\000") },
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{ "WPG", 0, MagicPattern("\377WPC") },
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{ "XBM", 0, MagicPattern("#define") },
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{ "XCF", 0, MagicPattern("gimp xcf") },
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{ "XEF", 0, MagicPattern("FOVb") },
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{ "XPM", 1, MagicPattern("* XPM *") }
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};
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static LinkedListInfo
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*magic_cache = (LinkedListInfo *) NULL;
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static SemaphoreInfo
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*magic_semaphore = (SemaphoreInfo *) NULL;
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/*
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Forward declarations.
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||
*/
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static MagickBooleanType
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||
IsMagicCacheInstantiated(ExceptionInfo *);
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||
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#if !MAGICKCORE_ZERO_CONFIGURATION_SUPPORT
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static MagickBooleanType
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LoadMagicCache(LinkedListInfo *,const char *,const char *,const size_t,
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ExceptionInfo *);
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#endif
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/*
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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% %
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% %
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% %
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% A c q u i r e M a g i c C a c h e %
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% %
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||
% %
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||
% %
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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%
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% AcquireMagicCache() caches one or more magic configurations which provides a
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% mapping between magic attributes and a magic name.
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%
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% The format of the AcquireMagicCache method is:
|
||
%
|
||
% LinkedListInfo *AcquireMagicCache(const char *filename,
|
||
% ExceptionInfo *exception)
|
||
%
|
||
% A description of each parameter follows:
|
||
%
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||
% o filename: the font file name.
|
||
%
|
||
% o exception: return any errors or warnings in this structure.
|
||
%
|
||
*/
|
||
static int CompareMagickInfoSize(const void *a,const void *b)
|
||
{
|
||
MagicInfo
|
||
*ma,
|
||
*mb;
|
||
|
||
ma=(MagicInfo *) a;
|
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mb=(MagicInfo *) b;
|
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if (ma->offset != mb->offset)
|
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return((int) (ma->offset-mb->offset));
|
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return((int) (mb->length-(ssize_t) ma->length));
|
||
}
|
||
|
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static LinkedListInfo *AcquireMagicCache(const char *filename,
|
||
ExceptionInfo *exception)
|
||
{
|
||
LinkedListInfo
|
||
*cache;
|
||
|
||
MagickStatusType
|
||
status;
|
||
|
||
ssize_t
|
||
i;
|
||
|
||
cache=NewLinkedList(0);
|
||
if (cache == (LinkedListInfo *) NULL)
|
||
ThrowFatalException(ResourceLimitFatalError,"MemoryAllocationFailed");
|
||
/*
|
||
Load external magic map.
|
||
*/
|
||
status=MagickTrue;
|
||
#if !MAGICKCORE_ZERO_CONFIGURATION_SUPPORT
|
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{
|
||
char
|
||
path[MaxTextExtent];
|
||
|
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const StringInfo
|
||
*option;
|
||
|
||
LinkedListInfo
|
||
*options;
|
||
|
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*path='\0';
|
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options=GetConfigureOptions(filename,exception);
|
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option=(const StringInfo *) GetNextValueInLinkedList(options);
|
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while (option != (const StringInfo *) NULL)
|
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{
|
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(void) CopyMagickString(path,GetStringInfoPath(option),MaxTextExtent);
|
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status&=LoadMagicCache(cache,(const char *)
|
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GetStringInfoDatum(option),GetStringInfoPath(option),0,exception);
|
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option=(const StringInfo *) GetNextValueInLinkedList(options);
|
||
}
|
||
options=DestroyConfigureOptions(options);
|
||
}
|
||
#endif
|
||
/*
|
||
Load built-in magic map.
|
||
*/
|
||
for (i=0; i < (ssize_t) (sizeof(MagicMap)/sizeof(*MagicMap)); i++)
|
||
{
|
||
MagicInfo
|
||
*magic_info;
|
||
|
||
const MagicMapInfo
|
||
*p;
|
||
|
||
p=MagicMap+i;
|
||
magic_info=(MagicInfo *) AcquireMagickMemory(sizeof(*magic_info));
|
||
if (magic_info == (MagicInfo *) NULL)
|
||
{
|
||
(void) ThrowMagickException(exception,GetMagickModule(),
|
||
ResourceLimitError,"MemoryAllocationFailed","`%s'",p->name);
|
||
continue;
|
||
}
|
||
(void) memset(magic_info,0,sizeof(*magic_info));
|
||
magic_info->path=(char *) "[built-in]";
|
||
magic_info->name=(char *) p->name;
|
||
magic_info->offset=p->offset;
|
||
magic_info->target=(char *) p->magic;
|
||
magic_info->magic=(unsigned char *) p->magic;
|
||
magic_info->length=p->length;
|
||
magic_info->exempt=MagickTrue;
|
||
magic_info->signature=MagickCoreSignature;
|
||
status&=InsertValueInSortedLinkedList(cache,CompareMagickInfoSize,
|
||
NULL,magic_info);
|
||
if (status == MagickFalse)
|
||
(void) ThrowMagickException(exception,GetMagickModule(),
|
||
ResourceLimitError,"MemoryAllocationFailed","`%s'",magic_info->name);
|
||
}
|
||
return(cache);
|
||
}
|
||
|
||
/*
|
||
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||
% %
|
||
% %
|
||
% %
|
||
+ G e t M a g i c I n f o %
|
||
% %
|
||
% %
|
||
% %
|
||
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||
%
|
||
% GetMagicInfo() searches the magic list for the specified name and if found
|
||
% returns attributes for that magic.
|
||
%
|
||
% The format of the GetMagicInfo method is:
|
||
%
|
||
% const MagicInfo *GetMagicInfo(const unsigned char *magic,
|
||
% const size_t length,ExceptionInfo *exception)
|
||
%
|
||
% A description of each parameter follows:
|
||
%
|
||
% 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 MagicInfo *GetMagicInfo(const unsigned char *magic,
|
||
const size_t length,ExceptionInfo *exception)
|
||
{
|
||
const MagicInfo
|
||
*p;
|
||
|
||
assert(exception != (ExceptionInfo *) NULL);
|
||
if (IsMagicCacheInstantiated(exception) == MagickFalse)
|
||
return((const MagicInfo *) NULL);
|
||
/*
|
||
Search for magic tag.
|
||
*/
|
||
LockSemaphoreInfo(magic_semaphore);
|
||
ResetLinkedListIterator(magic_cache);
|
||
p=(const MagicInfo *) GetNextValueInLinkedList(magic_cache);
|
||
if (magic == (const unsigned char *) NULL)
|
||
{
|
||
UnlockSemaphoreInfo(magic_semaphore);
|
||
return(p);
|
||
}
|
||
while (p != (const MagicInfo *) NULL)
|
||
{
|
||
assert(p->offset >= 0);
|
||
if (((size_t) (p->offset+p->length) <= length) &&
|
||
(memcmp(magic+p->offset,p->magic,p->length) == 0))
|
||
break;
|
||
p=(const MagicInfo *) GetNextValueInLinkedList(magic_cache);
|
||
}
|
||
if (p != (const MagicInfo *) NULL)
|
||
(void) InsertValueInLinkedList(magic_cache,0,
|
||
RemoveElementByValueFromLinkedList(magic_cache,p));
|
||
UnlockSemaphoreInfo(magic_semaphore);
|
||
return(p);
|
||
}
|
||
|
||
/*
|
||
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||
% %
|
||
% %
|
||
% %
|
||
% G e t M a g i c I n f o L i s t %
|
||
% %
|
||
% %
|
||
% %
|
||
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||
%
|
||
% GetMagicInfoList() returns any image aliases that match the specified
|
||
% pattern.
|
||
%
|
||
% The magic of the GetMagicInfoList function is:
|
||
%
|
||
% const MagicInfo **GetMagicInfoList(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 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 MagicInfoCompare(const void *x,const void *y)
|
||
{
|
||
const MagicInfo
|
||
**p,
|
||
**q;
|
||
|
||
p=(const MagicInfo **) x,
|
||
q=(const MagicInfo **) y;
|
||
if (LocaleCompare((*p)->path,(*q)->path) == 0)
|
||
return(LocaleCompare((*p)->name,(*q)->name));
|
||
return(LocaleCompare((*p)->path,(*q)->path));
|
||
}
|
||
|
||
#if defined(__cplusplus) || defined(c_plusplus)
|
||
}
|
||
#endif
|
||
|
||
MagickExport const MagicInfo **GetMagicInfoList(const char *pattern,
|
||
size_t *number_aliases,ExceptionInfo *exception)
|
||
{
|
||
const MagicInfo
|
||
**aliases;
|
||
|
||
const MagicInfo
|
||
*p;
|
||
|
||
ssize_t
|
||
i;
|
||
|
||
/*
|
||
Allocate magic list.
|
||
*/
|
||
assert(pattern != (char *) NULL);
|
||
(void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",pattern);
|
||
assert(number_aliases != (size_t *) NULL);
|
||
*number_aliases=0;
|
||
p=GetMagicInfo((const unsigned char *) NULL,0,exception);
|
||
if (p == (const MagicInfo *) NULL)
|
||
return((const MagicInfo **) NULL);
|
||
aliases=(const MagicInfo **) AcquireQuantumMemory((size_t)
|
||
GetNumberOfElementsInLinkedList(magic_cache)+1UL,sizeof(*aliases));
|
||
if (aliases == (const MagicInfo **) NULL)
|
||
return((const MagicInfo **) NULL);
|
||
/*
|
||
Generate magic list.
|
||
*/
|
||
LockSemaphoreInfo(magic_semaphore);
|
||
ResetLinkedListIterator(magic_cache);
|
||
p=(const MagicInfo *) GetNextValueInLinkedList(magic_cache);
|
||
for (i=0; p != (const MagicInfo *) NULL; )
|
||
{
|
||
if ((p->stealth == MagickFalse) &&
|
||
(GlobExpression(p->name,pattern,MagickFalse) != MagickFalse))
|
||
aliases[i++]=p;
|
||
p=(const MagicInfo *) GetNextValueInLinkedList(magic_cache);
|
||
}
|
||
UnlockSemaphoreInfo(magic_semaphore);
|
||
qsort((void *) aliases,(size_t) i,sizeof(*aliases),MagicInfoCompare);
|
||
aliases[i]=(MagicInfo *) NULL;
|
||
*number_aliases=(size_t) i;
|
||
return(aliases);
|
||
}
|
||
|
||
/*
|
||
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||
% %
|
||
% %
|
||
% %
|
||
% G e t M a g i c L i s t %
|
||
% %
|
||
% %
|
||
% %
|
||
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||
%
|
||
% GetMagicList() returns any image format aliases that match the specified
|
||
% pattern.
|
||
%
|
||
% The format of the GetMagicList function is:
|
||
%
|
||
% char **GetMagicList(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 MagicCompare(const void *x,const void *y)
|
||
{
|
||
const char
|
||
*p,
|
||
*q;
|
||
|
||
p=(const char *) x;
|
||
q=(const char *) y;
|
||
return(LocaleCompare(p,q));
|
||
}
|
||
|
||
#if defined(__cplusplus) || defined(c_plusplus)
|
||
}
|
||
#endif
|
||
|
||
MagickExport char **GetMagicList(const char *pattern,size_t *number_aliases,
|
||
ExceptionInfo *exception)
|
||
{
|
||
char
|
||
**aliases;
|
||
|
||
const MagicInfo
|
||
*p;
|
||
|
||
ssize_t
|
||
i;
|
||
|
||
/*
|
||
Allocate configure list.
|
||
*/
|
||
assert(pattern != (char *) NULL);
|
||
(void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",pattern);
|
||
assert(number_aliases != (size_t *) NULL);
|
||
*number_aliases=0;
|
||
p=GetMagicInfo((const unsigned char *) NULL,0,exception);
|
||
if (p == (const MagicInfo *) NULL)
|
||
return((char **) NULL);
|
||
aliases=(char **) AcquireQuantumMemory((size_t)
|
||
GetNumberOfElementsInLinkedList(magic_cache)+1UL,sizeof(*aliases));
|
||
if (aliases == (char **) NULL)
|
||
return((char **) NULL);
|
||
LockSemaphoreInfo(magic_semaphore);
|
||
ResetLinkedListIterator(magic_cache);
|
||
p=(const MagicInfo *) GetNextValueInLinkedList(magic_cache);
|
||
for (i=0; p != (const MagicInfo *) NULL; )
|
||
{
|
||
if ((p->stealth == MagickFalse) &&
|
||
(GlobExpression(p->name,pattern,MagickFalse) != MagickFalse))
|
||
aliases[i++]=ConstantString(p->name);
|
||
p=(const MagicInfo *) GetNextValueInLinkedList(magic_cache);
|
||
}
|
||
UnlockSemaphoreInfo(magic_semaphore);
|
||
qsort((void *) aliases,(size_t) i,sizeof(*aliases),MagicCompare);
|
||
aliases[i]=(char *) NULL;
|
||
*number_aliases=(size_t) i;
|
||
return(aliases);
|
||
}
|
||
|
||
/*
|
||
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||
% %
|
||
% %
|
||
% %
|
||
% G e t M a g i c N a m e %
|
||
% %
|
||
% %
|
||
% %
|
||
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||
%
|
||
% GetMagicName() returns the name associated with the magic.
|
||
%
|
||
% The format of the GetMagicName method is:
|
||
%
|
||
% const char *GetMagicName(const MagicInfo *magic_info)
|
||
%
|
||
% A description of each parameter follows:
|
||
%
|
||
% o magic_info: The magic info.
|
||
%
|
||
*/
|
||
MagickExport const char *GetMagicName(const MagicInfo *magic_info)
|
||
{
|
||
(void) LogMagickEvent(TraceEvent,GetMagickModule(),"...");
|
||
assert(magic_info != (MagicInfo *) NULL);
|
||
assert(magic_info->signature == MagickCoreSignature);
|
||
return(magic_info->name);
|
||
}
|
||
|
||
/*
|
||
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||
% %
|
||
% %
|
||
% %
|
||
+ I s M a g i c C a c h e I n s t a n t i a t e d %
|
||
% %
|
||
% %
|
||
% %
|
||
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||
%
|
||
% IsMagicCacheInstantiated() determines if the magic list is instantiated.
|
||
% If not, it instantiates the list and returns it.
|
||
%
|
||
% The format of the IsMagicInstantiated method is:
|
||
%
|
||
% MagickBooleanType IsMagicCacheInstantiated(ExceptionInfo *exception)
|
||
%
|
||
% A description of each parameter follows.
|
||
%
|
||
% o exception: return any errors or warnings in this structure.
|
||
%
|
||
*/
|
||
static MagickBooleanType IsMagicCacheInstantiated(ExceptionInfo *exception)
|
||
{
|
||
if (magic_cache == (LinkedListInfo *) NULL)
|
||
{
|
||
if (magic_semaphore == (SemaphoreInfo *) NULL)
|
||
ActivateSemaphoreInfo(&magic_semaphore);
|
||
LockSemaphoreInfo(magic_semaphore);
|
||
if (magic_cache == (LinkedListInfo *) NULL)
|
||
magic_cache=AcquireMagicCache(MagicFilename,exception);
|
||
UnlockSemaphoreInfo(magic_semaphore);
|
||
}
|
||
return(magic_cache != (LinkedListInfo *) NULL ? MagickTrue : MagickFalse);
|
||
}
|
||
|
||
/*
|
||
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||
% %
|
||
% %
|
||
% %
|
||
% L i s t M a g i c I n f o %
|
||
% %
|
||
% %
|
||
% %
|
||
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||
%
|
||
% ListMagicInfo() lists the magic info to a file.
|
||
%
|
||
% The format of the ListMagicInfo method is:
|
||
%
|
||
% MagickBooleanType ListMagicInfo(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 ListMagicInfo(FILE *file,
|
||
ExceptionInfo *exception)
|
||
{
|
||
const char
|
||
*path;
|
||
|
||
const MagicInfo
|
||
**magic_info;
|
||
|
||
ssize_t
|
||
i;
|
||
|
||
size_t
|
||
number_aliases;
|
||
|
||
ssize_t
|
||
j;
|
||
|
||
if (file == (const FILE *) NULL)
|
||
file=stdout;
|
||
magic_info=GetMagicInfoList("*",&number_aliases,exception);
|
||
if (magic_info == (const MagicInfo **) NULL)
|
||
return(MagickFalse);
|
||
j=0;
|
||
path=(const char *) NULL;
|
||
for (i=0; i < (ssize_t) number_aliases; i++)
|
||
{
|
||
if (magic_info[i]->stealth != MagickFalse)
|
||
continue;
|
||
if ((path == (const char *) NULL) ||
|
||
(LocaleCompare(path,magic_info[i]->path) != 0))
|
||
{
|
||
if (magic_info[i]->path != (char *) NULL)
|
||
(void) FormatLocaleFile(file,"\nPath: %s\n\n",magic_info[i]->path);
|
||
(void) FormatLocaleFile(file,"Name Offset Target\n");
|
||
(void) FormatLocaleFile(file,
|
||
"-------------------------------------------------"
|
||
"------------------------------\n");
|
||
}
|
||
path=magic_info[i]->path;
|
||
(void) FormatLocaleFile(file,"%s",magic_info[i]->name);
|
||
for (j=(ssize_t) strlen(magic_info[i]->name); j <= 9; j++)
|
||
(void) FormatLocaleFile(file," ");
|
||
(void) FormatLocaleFile(file,"%6ld ",(long) magic_info[i]->offset);
|
||
if (magic_info[i]->target != (char *) NULL)
|
||
{
|
||
ssize_t
|
||
j;
|
||
|
||
for (j=0; magic_info[i]->target[j] != '\0'; j++)
|
||
if (isprint((int) ((unsigned char) magic_info[i]->target[j])) != 0)
|
||
(void) FormatLocaleFile(file,"%c",magic_info[i]->target[j]);
|
||
else
|
||
(void) FormatLocaleFile(file,"\\%03o",(unsigned int)
|
||
((unsigned char) magic_info[i]->target[j]));
|
||
}
|
||
(void) FormatLocaleFile(file,"\n");
|
||
}
|
||
(void) fflush(file);
|
||
magic_info=(const MagicInfo **) RelinquishMagickMemory((void *) magic_info);
|
||
return(MagickTrue);
|
||
}
|
||
|
||
#if !MAGICKCORE_ZERO_CONFIGURATION_SUPPORT
|
||
/*
|
||
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||
% %
|
||
% %
|
||
% %
|
||
+ 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[MaxTextExtent],
|
||
*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)+MaxTextExtent;
|
||
for (q=(char *) xml; *q != '\0'; )
|
||
{
|
||
/*
|
||
Interpret XML.
|
||
*/
|
||
(void) GetNextToken(q,&q,extent,token);
|
||
if (*token == '\0')
|
||
break;
|
||
(void) CopyMagickString(keyword,token,MaxTextExtent);
|
||
if (LocaleNCompare(keyword,"<!DOCTYPE",9) == 0)
|
||
{
|
||
/*
|
||
Doctype element.
|
||
*/
|
||
while ((LocaleNCompare(q,"]>",2) != 0) && (*q != '\0'))
|
||
(void) GetNextToken(q,&q,extent,token);
|
||
continue;
|
||
}
|
||
if (LocaleNCompare(keyword,"<!--",4) == 0)
|
||
{
|
||
/*
|
||
Comment element.
|
||
*/
|
||
while ((LocaleNCompare(q,"->",2) != 0) && (*q != '\0'))
|
||
(void) GetNextToken(q,&q,extent,token);
|
||
continue;
|
||
}
|
||
if (LocaleCompare(keyword,"<include") == 0)
|
||
{
|
||
/*
|
||
Include element.
|
||
*/
|
||
while (((*token != '/') && (*(token+1) != '>')) && (*q != '\0'))
|
||
{
|
||
(void) CopyMagickString(keyword,token,MaxTextExtent);
|
||
(void) GetNextToken(q,&q,extent,token);
|
||
if (*token != '=')
|
||
continue;
|
||
(void) GetNextToken(q,&q,extent,token);
|
||
if (LocaleCompare(keyword,"file") == 0)
|
||
{
|
||
if (depth > MagickMaxRecursionDepth)
|
||
(void) ThrowMagickException(exception,GetMagickModule(),
|
||
ConfigureError,"IncludeElementNestedTooDeeply","`%s'",token);
|
||
else
|
||
{
|
||
char
|
||
path[MaxTextExtent],
|
||
*xml;
|
||
|
||
GetPathComponent(filename,HeadPath,path);
|
||
if (*path != '\0')
|
||
(void) ConcatenateMagickString(path,DirectorySeparator,
|
||
MaxTextExtent);
|
||
if (*token == *DirectorySeparator)
|
||
(void) CopyMagickString(path,token,MaxTextExtent);
|
||
else
|
||
(void) ConcatenateMagickString(path,token,MaxTextExtent);
|
||
xml=FileToXML(path,~0UL);
|
||
if (xml != (char *) NULL)
|
||
{
|
||
status&=LoadMagicCache(cache,xml,path,depth+1,
|
||
exception);
|
||
xml=(char *) RelinquishMagickMemory(xml);
|
||
}
|
||
}
|
||
}
|
||
}
|
||
continue;
|
||
}
|
||
if (LocaleCompare(keyword,"<magic") == 0)
|
||
{
|
||
/*
|
||
Magic element.
|
||
*/
|
||
magic_info=(MagicInfo *) AcquireMagickMemory(sizeof(*magic_info));
|
||
if (magic_info == (MagicInfo *) NULL)
|
||
ThrowFatalException(ResourceLimitFatalError,"MemoryAllocationFailed");
|
||
(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=AppendValueToLinkedList(cache,magic_info);
|
||
if (status == MagickFalse)
|
||
(void) ThrowMagickException(exception,GetMagickModule(),
|
||
ResourceLimitError,"MemoryAllocationFailed","`%s'",
|
||
magic_info->name);
|
||
magic_info=(MagicInfo *) NULL;
|
||
continue;
|
||
}
|
||
(void) GetNextToken(q,(const char **) NULL,extent,token);
|
||
if (*token != '=')
|
||
continue;
|
||
(void) GetNextToken(q,&q,extent,token);
|
||
(void) 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=IsMagickTrue(token);
|
||
break;
|
||
}
|
||
break;
|
||
}
|
||
case 'T':
|
||
case 't':
|
||
{
|
||
if (LocaleCompare((char *) keyword,"target") == 0)
|
||
{
|
||
char
|
||
*p;
|
||
|
||
unsigned char
|
||
*q;
|
||
|
||
size_t
|
||
length;
|
||
|
||
length=strlen(token);
|
||
magic_info->target=ConstantString(token);
|
||
magic_info->magic=(unsigned char *) ConstantString(token);
|
||
q=magic_info->magic;
|
||
for (p=magic_info->target; *p != '\0'; )
|
||
{
|
||
if (*p == '\\')
|
||
{
|
||
p++;
|
||
if (isdigit((int) ((unsigned char) *p)) != 0)
|
||
{
|
||
char
|
||
*end;
|
||
|
||
*q++=(unsigned char) strtol(p,&end,8);
|
||
p+=(end-p);
|
||
magic_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++;
|
||
magic_info->length++;
|
||
continue;
|
||
}
|
||
else
|
||
if (LocaleNCompare(p,"&",5) == 0)
|
||
(void) CopyMagickString(p+1,p+5,length-magic_info->length);
|
||
*q++=(unsigned char) (*p++);
|
||
magic_info->length++;
|
||
}
|
||
break;
|
||
}
|
||
break;
|
||
}
|
||
default:
|
||
break;
|
||
}
|
||
}
|
||
token=(char *) RelinquishMagickMemory(token);
|
||
return(status != 0 ? MagickTrue : MagickFalse);
|
||
}
|
||
#endif
|
||
|
||
/*
|
||
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||
% %
|
||
% %
|
||
% %
|
||
+ M a g i c C o m p o n e n t G e n e s i s %
|
||
% %
|
||
% %
|
||
% %
|
||
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||
%
|
||
% MagicComponentGenesis() instantiates the magic component.
|
||
%
|
||
% The format of the MagicComponentGenesis method is:
|
||
%
|
||
% MagickBooleanType MagicComponentGenesis(void)
|
||
%
|
||
*/
|
||
MagickExport MagickBooleanType MagicComponentGenesis(void)
|
||
{
|
||
if (magic_semaphore == (SemaphoreInfo *) NULL)
|
||
magic_semaphore=AllocateSemaphoreInfo();
|
||
return(MagickTrue);
|
||
}
|
||
|
||
/*
|
||
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||
% %
|
||
% %
|
||
% %
|
||
+ M a g i c C o m p o n e n t T e r m i n u s %
|
||
% %
|
||
% %
|
||
% %
|
||
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||
%
|
||
% MagicComponentTerminus() destroys the magic component.
|
||
%
|
||
% The format of the MagicComponentTerminus method is:
|
||
%
|
||
% MagicComponentTerminus(void)
|
||
%
|
||
*/
|
||
|
||
static void *DestroyMagicElement(void *magic_info)
|
||
{
|
||
MagicInfo
|
||
*p;
|
||
|
||
p=(MagicInfo *) magic_info;
|
||
if (p->exempt == MagickFalse)
|
||
{
|
||
if (p->path != (char *) NULL)
|
||
p->path=DestroyString(p->path);
|
||
if (p->name != (char *) NULL)
|
||
p->name=DestroyString(p->name);
|
||
if (p->target != (char *) NULL)
|
||
p->target=DestroyString(p->target);
|
||
if (p->magic != (unsigned char *) NULL)
|
||
p->magic=(unsigned char *) RelinquishMagickMemory(p->magic);
|
||
}
|
||
p=(MagicInfo *) RelinquishMagickMemory(p);
|
||
return((void *) NULL);
|
||
}
|
||
|
||
MagickExport void MagicComponentTerminus(void)
|
||
{
|
||
if (magic_semaphore == (SemaphoreInfo *) NULL)
|
||
ActivateSemaphoreInfo(&magic_semaphore);
|
||
LockSemaphoreInfo(magic_semaphore);
|
||
if (magic_cache != (LinkedListInfo *) NULL)
|
||
magic_cache=DestroyLinkedList(magic_cache,DestroyMagicElement);
|
||
UnlockSemaphoreInfo(magic_semaphore);
|
||
DestroySemaphoreInfo(&magic_semaphore);
|
||
}
|