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Add MachoManiac

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Sam Carlton 2021-01-30 16:50:33 -06:00
parent 04c0b7aeae
commit 50b1c46678
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helpers/macho/macho.magic.js Normal file
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//Global Constants
var MAGICS = [];
/*
@Class MAGIC
@Description
Magic is a specific byte that indicates what for file it is.
In Mach-O there a multiple magics differing from endianess, bits or file type.
*/
let MAGIC =
{
//Macho Magics
FAT_MAGIC: 0xcafebabe,
FAT_CIGAM: 0xbebafeca,
FAT_MAGIC64: 0xcafebabf,
FAT_CIGAM64: 0xbfbafeca,
MH_MAGIC: 0xfeedface,
MH_CIGAM: 0xcefaedfe,
MH_MAGIC64: 0xfeedfacf,
MH_CIGAM64: 0xcffaedfe,
//Retrieve the magic name of a specified magic
//If an invalid magic was specifed undefined is returned
KEYFORVALUE: function(value) {
return MAGICS[value];
},
//Validate that a specified magic is correct
VALIDATE: function(magic) {
return MAGIC.KEYFORVALUE(magic) != undefined;
},
//returns true if the specified magic is a little-endian magic
ISLITTLEENDIAN: function(magic) {
if(!MAGIC.VALIDATE(magic)) //If it is not a valid magic we are basically done here
return false;
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
},
//returns true if the specified magic is 64-bit
IS64BIT: function(magic) {
if(!MAGIC.VALIDATE(magic))
return false;
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
},
toString : function() {
return JSON.stringify(this);
},
debugdescription: ""
};
MAGICS[MAGIC.FAT_MAGIC] = "FAT_MAGIC";
MAGICS[MAGIC.FAT_CIGAM] = "FAT_CIGAM";
MAGICS[MAGIC.FAT_MAGIC64] = "FAT_MAGIC64";
MAGICS[MAGIC.FAT_CIGAM64] = "FAT_CIGAM64";
MAGICS[MAGIC.MH_MAGIC] = "MH_MAGIC";
MAGICS[MAGIC.MH_CIGAM] = "MH_CIGAM";
MAGICS[MAGIC.MH_MAGIC64] = "MH_MAGIC64";
MAGICS[MAGIC.MH_CIGAM64] = "MH_CIGAM64";
export { MAGIC, MAGICS }