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Sam Carlton
parent
50b1c46678
commit
918a703df7
2 changed files with 180 additions and 75 deletions
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@ -3,11 +3,11 @@
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//Licensed under the MIT License
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import { mime_binary } from './mimetypes.js'
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import { ReadUint32, ReadUint16LE, ReadUint32LE } from './memory.js'
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import { ReadUint32, ReadUint16LE, ReadUint32LE, ReadUint16 } from './memory.js'
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import { uint32_t, uint64_t } from './macho.constants.js'
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import { MAGIC } from './macho.magic.js'
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import { MachoHeader64 } from './macho.header.js'
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import { MachoHeader64, MachoHeader } from './macho.header.js'
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import { LOAD_COMMAND_TYPE, LoadCommand } from './macho.loadcommand.js'
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import { CPU_TYPE, CPU_SUB_TYPE } from './macho.cpu.js'
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import { FILE_FLAGS, FILE_TYPE } from './macho.file.js'
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@ -53,17 +53,21 @@ var ChunkReader = function ChunkReader(file, chunksize = (1024 * 1024), callback
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free("window.readers");
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};
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export default function MachoParser(file, callbackElement = document.body) {
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export function MachoParser(file, callback) {
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const machoOutputData = {}
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//properties
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this.reader = new FileReader();
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function writeToCallback(val) {
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if(callbackElement) {
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callbackElement.innerHTML +='<tr>'+val+'</tr>';
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} else {
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throw new Error('Invalid callback.');
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}
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return
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// if(callbackElement) {
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// callbackElement.innerHTML +='<tr>'+val+'</tr>';
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// } else {
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// throw new Error('Invalid callback.');
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// }
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}
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/*
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@ -147,8 +151,11 @@ export default function MachoParser(file, callbackElement = document.body) {
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window.tempFile = blob;
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//Set up the file and print out for verbosity
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writeToCallback('<td><strong>File</strong></td><td>'+file.name.toString()+'</td>');
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writeToCallback('<td><strong>Size</strong></td><td>' + filesize.toFixed(2).toString() + 'MB</td>');
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machoOutputData.file = file
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machoOutputData.fileSize = filesize
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machoOutputData.architectures = []
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// writeToCallback('<td><strong>File</strong></td><td>'+file.name.toString()+'</td>');
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// writeToCallback('<td><strong>Size</strong></td><td>' + filesize.toFixed(2).toString() + 'MB</td>');
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//Construct a new 8-bit array from the file buffer
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let data = new Uint8Array(e.target.result);
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@ -161,27 +168,29 @@ export default function MachoParser(file, callbackElement = document.body) {
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for(var cMagic = 0; cMagic < magics.length; cMagic++) { //Start parsing the binary from each found magic's offset
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const architecture = {}
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let magicOff = magics[cMagic]; //The offset of the magic currently being parsed
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let magic = ReadUint32(data, magicOff); //Read the magic from the byte array
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let littleendian = MAGIC.ISLITTLEENDIAN(magic); //Get the endianness of the magic
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let x64 = MAGIC.IS64BIT(magic); //Check which bit architecture is being used
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window.machoObj = {}; //Create the Mach-O information object
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window.machoObj.bits = (x64 ? "64-bit" : "32-bit"); //Get the architecture
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window.machoObj.endianness = (littleendian ? "little endian" : "big endian"); //Get the endianness
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window.machoObj.header = (x64 ? new MachoHeader64() : new MachoHeader()); //Depending on architecture, construct a new header
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window.machoObj.header.magic = magic; //Add the magic to the header
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window.machoObj.header.cputype = (littleendian ? ReadUint16LE(data, magicOff+uint32_t) : ReadUint16(data, magicOff+uint32_t)); //Read the cputype which comes after the magic
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window.machoObj.header.cpusubtype = (littleendian ? ReadUint16LE(data, magicOff+(2*uint32_t)) : ReadUint16(data, magicOff+(2*uint32_t))); //Read the cpu subtype which comes after the cputype
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window.machoObj.header.filetype = (littleendian ? ReadUint32LE(data, magicOff+(3*uint32_t)) : ReadUint32(data, magicOff+(3*uint32_t))); //Read the file type which comes after the cpu subtype
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window.machoObj.header.ncmds = (littleendian ? ReadUint32LE(data, magicOff+(4*uint32_t)) : ReadUint32(data, magicOff+(4*uint32_t))); //Read the number of commands which comes after the filetype
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window.machoObj.header.sizeofcmds =(littleendian ? ReadUint32LE(data, magicOff+(5*uint32_t)) : ReadUint32(data, magicOff+(5*uint32_t))); //Read the size of the commands which comes after the number of commands
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window.machoObj.header.flags = (littleendian ? ReadUint32LE(data, magicOff+(6*uint32_t)) : ReadUint32(data, magicOff+(6*uint32_t))); //Read the flags which come after the size of the commands
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window.machoObj.loadcommands = [];
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// machoOutputData = {}; //Create the Mach-O information object
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architecture.bits = (x64 ? "64-bit" : "32-bit"); //Get the architecture
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architecture.endianness = (littleendian ? "little endian" : "big endian"); //Get the endianness
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architecture.header = (x64 ? new MachoHeader64() : new MachoHeader()); //Depending on architecture, construct a new header
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architecture.header.magic = magic; //Add the magic to the header
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architecture.header.cputype = (littleendian ? ReadUint16LE(data, magicOff+uint32_t) : ReadUint16(data, magicOff+uint32_t)); //Read the cputype which comes after the magic
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architecture.header.cpusubtype = (littleendian ? ReadUint16LE(data, magicOff+(2*uint32_t)) : ReadUint16(data, magicOff+(2*uint32_t))); //Read the cpu subtype which comes after the cputype
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architecture.header.filetype = (littleendian ? ReadUint32LE(data, magicOff+(3*uint32_t)) : ReadUint32(data, magicOff+(3*uint32_t))); //Read the file type which comes after the cpu subtype
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architecture.header.ncmds = (littleendian ? ReadUint32LE(data, magicOff+(4*uint32_t)) : ReadUint32(data, magicOff+(4*uint32_t))); //Read the number of commands which comes after the filetype
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architecture.header.sizeofcmds =(littleendian ? ReadUint32LE(data, magicOff+(5*uint32_t)) : ReadUint32(data, magicOff+(5*uint32_t))); //Read the size of the commands which comes after the number of commands
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architecture.header.flags = (littleendian ? ReadUint32LE(data, magicOff+(6*uint32_t)) : ReadUint32(data, magicOff+(6*uint32_t))); //Read the flags which come after the size of the commands
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architecture.loadcommands = [];
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var align = (x64 ? uint64_t : uint32_t); //Depending on our architecture set an align for parsing the load commands
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for(var i = 0, off = magicOff; off < data.length, i < window.machoObj.header.ncmds; i++) {
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for(var i = 0, off = magicOff; off < data.length, i < architecture.header.ncmds; i++) {
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var curr_cmd = {};
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curr_cmd.cmd = (littleendian ? ReadUint32LE(data, off) : ReadUint32(data, off)); //Read the command type from the offset
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@ -191,45 +200,65 @@ export default function MachoParser(file, callbackElement = document.body) {
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curr_cmd = ParseCommand(curr_cmd.cmd, curr_cmd.data, curr_cmd.cmdsize, curr_cmd.fileoff);
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if(curr_cmd.cmdsize > 0) { //Commands with a size of zero are not valid or not interesting
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window.machoObj.loadcommands.push(curr_cmd);
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architecture.loadcommands.push(curr_cmd);
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}
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off+=8;
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i++; //Increate the loadcommand counter
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}
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}
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architecture.offset = magicOff.toString(16)
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architecture.magic = architecture.header.magic.toString(16)
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architecture.processorType = CPU_TYPE.DESCRIPTION(architecture.header.cputype)
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architecture.processorSubType = CPU_SUB_TYPE.ARM.DESCRIPTION(architecture.header.cpusubtype)
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architecture.fileType = FILE_TYPE.DESCRIPTION(architecture.header.filetype)
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/* Parse all collected information to Human Readable strings */
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writeToCallback('');
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writeToCallback('<td><strong>Header</strong></td>');
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writeToCallback('<td><strong>Offset</strong></td><td>0x'+magicOff.toString(16)+'</td>');
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writeToCallback('<td><strong>Magic</strong></td><td>0x'+window.machoObj.header.magic.toString(16)+'</td>');
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writeToCallback('<td><strong>Bits</strong></td><td>'+window.machoObj.bits+'</td>');
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writeToCallback('<td><strong>Endianness</strong></td><td>'+window.machoObj.endianness+'</td>');
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writeToCallback('<td><strong>Processor type</strong></td><td>' + CPU_TYPE.DESCRIPTION(window.machoObj.header.cputype)+'</td>');
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writeToCallback('<td><strong>Processor subtype</strong></td><td>'+ CPU_SUB_TYPE.ARM.DESCRIPTION(window.machoObj.header.cpusubtype)+'</td>');
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writeToCallback('<td><strong>File type</strong></td><td>'+FILE_TYPE.DESCRIPTION(window.machoObj.header.filetype)+'</td>');
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writeToCallback('<td><strong>Number of commands</strong></td><td>'+window.machoObj.header.ncmds+'</td>');
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writeToCallback('<td><strong>Size of commands</strong></td><td>'+window.machoObj.header.sizeofcmds+'</td>');
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// writeToCallback('');
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// writeToCallback('<td><strong>Header</strong></td>');
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// writeToCallback('<td><strong>Offset</strong></td><td>0x'+magicOff.toString(16)+'</td>');
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// writeToCallback('<td><strong>Magic</strong></td><td>0x'+architecture.header.magic.toString(16)+'</td>');
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// writeToCallback('<td><strong>Bits</strong></td><td>'+architecture.bits+'</td>');
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// writeToCallback('<td><strong>Endianness</strong></td><td>'+architecture.endianness+'</td>');
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// writeToCallback('<td><strong>Processor type</strong></td><td>' + CPU_TYPE.DESCRIPTION(architecture.header.cputype)+'</td>');
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// writeToCallback('<td><strong>Processor subtype</strong></td><td>'+ CPU_SUB_TYPE.ARM.DESCRIPTION(architecture.header.cpusubtype)+'</td>');
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// writeToCallback('<td><strong>File type</strong></td><td>'+FILE_TYPE.DESCRIPTION(architecture.header.filetype)+'</td>');
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// writeToCallback('<td><strong>Number of commands</strong></td><td>'+architecture.header.ncmds+'</td>');
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// writeToCallback('<td><strong>Size of commands</strong></td><td>'+architecture.header.sizeofcmds+'</td>');
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window.machoObj.header.flags = MapFlags(window.machoObj.header.flags, FILE_FLAGS);
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window.machoObj.header.flags = Object.keys(window.machoObj.header.flags).map(function(k) { if(k){return k}});
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architecture.header.flags = MapFlags(architecture.header.flags, FILE_FLAGS);
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architecture.header.flags = Object.keys(architecture.header.flags).map(function(k) { if(k){return k}});
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// writeToCallback('<td><strong>Flags</strong></td><td>'+architecture.header.flags.toString().replace(',','<br>').replace(',','<br>')+"</td>");
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// writeToCallback('');
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// writeToCallback('<td><strong>Load Command</strong></td><td><strong>Size</strong></td><td><strong>Offset</strong></td>');
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architecture.loadCommandsInfo = []
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for(var curr_lc = 0; curr_lc < architecture.loadcommands.length; curr_lc++) {
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architecture.loadCommandsInfo.push({
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description: LOAD_COMMAND_TYPE.DESCRIPTION(architecture.loadcommands[curr_lc].cmd),
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size: architecture.loadcommands[curr_lc].cmdsize,
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offset: ` 0x${architecture.loadcommands[curr_lc].fileoff.toString(16)}`
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})
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// writeToCallback(
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// '<td>'+
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// LOAD_COMMAND_TYPE.DESCRIPTION(architecture.loadcommands[curr_lc].cmd) +
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// '</td>'+
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// '<td>'+
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// architecture.loadcommands[curr_lc].cmdsize+
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// '</td>'+
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// '<td>'+
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// ' 0x' + architecture.loadcommands[curr_lc].fileoff.toString(16) +
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// '</td>');
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}
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writeToCallback('<td><strong>Flags</strong></td><td>'+window.machoObj.header.flags.toString().replace(',','<br>').replace(',','<br>')+"</td>");
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writeToCallback('');
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writeToCallback('<td><strong>Load Command</strong></td><td><strong>Size</strong></td><td><strong>Offset</strong></td>');
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for(var curr_lc = 0; curr_lc < window.machoObj.loadcommands.length; curr_lc++) {
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writeToCallback(
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'<td>'+
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LOAD_COMMAND_TYPE.DESCRIPTION(window.machoObj.loadcommands[curr_lc].cmd) +
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'</td>'+
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'<td>'+
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window.machoObj.loadcommands[curr_lc].cmdsize+
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'</td>'+
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'<td>'+
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' 0x' + window.machoObj.loadcommands[curr_lc].fileoff.toString(16) +
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'</td>');
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}
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magicOff = null;
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littleendian = null;
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x64 = null;
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@ -239,11 +268,19 @@ export default function MachoParser(file, callbackElement = document.body) {
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arrayBufferToBlob(data.buffer, fileType).then(function(blob){
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if(!window.tempFiles) { window.tempFiles = []; }
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window.tempFiles[window.tempFiles.length] = blob;
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}).catch(console.log.bind(console));
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}
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console.log('The parser has finished');
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}).catch(console.log.bind(console));
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machoOutputData.architectures.push( architecture )
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}
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callback( machoOutputData )
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console.log('The parser has finished')
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} else { //(magics.length <= 0) (If we end up here it means no magics were found in the file).
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writeToCallback('This is not a valid Mach-O file.');
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// writeToCallback('This is not a valid Mach-O file.');
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throw new Error('This is not a valid Mach-O file.')
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}
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}).catch(console.log.bind(console));
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@ -254,3 +291,15 @@ export default function MachoParser(file, callbackElement = document.body) {
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console.log('Parsing, please wait...');
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};
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export default async function ( file ) {
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return new Promise( ( resolve, reject ) => {
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try {
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(new MachoParser( file, resolve ))
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} catch ( error ) {
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reject( error )
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}
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} )
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}
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