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72 lines
1.9 KiB
JavaScript
72 lines
1.9 KiB
JavaScript
//Global Constants
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var MAGICS = [];
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/*
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@Class MAGIC
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@Description
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Magic is a specific byte that indicates what for file it is.
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In Mach-O there a multiple magics differing from endianess, bits or file type.
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*/
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let MAGIC =
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{
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//Macho Magics
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FAT_MAGIC: 0xcafebabe,
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FAT_CIGAM: 0xbebafeca,
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FAT_MAGIC64: 0xcafebabf,
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FAT_CIGAM64: 0xbfbafeca,
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MH_MAGIC: 0xfeedface,
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MH_CIGAM: 0xcefaedfe,
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MH_MAGIC64: 0xfeedfacf,
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MH_CIGAM64: 0xcffaedfe,
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//Retrieve the magic name of a specified magic
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//If an invalid magic was specifed undefined is returned
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KEYFORVALUE: function(value) {
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return MAGICS[value];
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},
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//Validate that a specified magic is correct
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VALIDATE: function(magic) {
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return MAGIC.KEYFORVALUE(magic) != undefined;
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},
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//returns true if the specified magic is a little-endian magic
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ISLITTLEENDIAN: function(magic) {
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if(!MAGIC.VALIDATE(magic)) //If it is not a valid magic we are basically done here
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return false;
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return MAGIC.KEYFORVALUE(magic).split('CIGAM').length > 1; //hacky trick to check if the magic value's keyname contains CIGAM which basically indicates little endian
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},
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//returns true if the specified magic is 64-bit
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IS64BIT: function(magic) {
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if(!MAGIC.VALIDATE(magic))
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return false;
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return MAGIC.KEYFORVALUE(magic).split('64').length > 1; //hacky trick to check if the magic value's keyname contains 64 which basically indicates 64-bit
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},
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toString : function() {
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return JSON.stringify(this);
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},
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debugdescription: ""
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};
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MAGICS[MAGIC.FAT_MAGIC] = "FAT_MAGIC";
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MAGICS[MAGIC.FAT_CIGAM] = "FAT_CIGAM";
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MAGICS[MAGIC.FAT_MAGIC64] = "FAT_MAGIC64";
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MAGICS[MAGIC.FAT_CIGAM64] = "FAT_CIGAM64";
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MAGICS[MAGIC.MH_MAGIC] = "MH_MAGIC";
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MAGICS[MAGIC.MH_CIGAM] = "MH_CIGAM";
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MAGICS[MAGIC.MH_MAGIC64] = "MH_MAGIC64";
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MAGICS[MAGIC.MH_CIGAM64] = "MH_CIGAM64";
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export { MAGIC, MAGICS }
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