pkg
Version:
Package your Node.js project into an executable
59 lines • 1.98 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.signMachOExecutable = exports.patchMachOExecutable = void 0;
const child_process_1 = require("child_process");
function parseCStr(buf) {
for (let i = 0; i < buf.length; i += 1) {
if (buf[i] === 0) {
return buf.slice(0, i).toString();
}
}
}
function patchCommand(type, buf, file) {
// segment_64
if (type === 0x19) {
const name = parseCStr(buf.slice(0, 16));
if (name === '__LINKEDIT') {
const fileoff = buf.readBigUInt64LE(32);
const vmsizePatched = BigInt(file.length) - fileoff;
const filesizePatched = vmsizePatched;
buf.writeBigUInt64LE(vmsizePatched, 24);
buf.writeBigUInt64LE(filesizePatched, 40);
}
}
// symtab
if (type === 0x2) {
const stroff = buf.readUInt32LE(8);
const strsizePatched = file.length - stroff;
buf.writeUInt32LE(strsizePatched, 12);
}
}
function patchMachOExecutable(file) {
const align = 8;
const hsize = 32;
const ncmds = file.readUInt32LE(16);
const buf = file.slice(hsize);
for (let offset = 0, i = 0; i < ncmds; i += 1) {
const type = buf.readUInt32LE(offset);
offset += 4;
const size = buf.readUInt32LE(offset) - 8;
offset += 4;
patchCommand(type, buf.slice(offset, offset + size), file);
offset += size;
if (offset & align) {
offset += align - (offset & align);
}
}
return file;
}
exports.patchMachOExecutable = patchMachOExecutable;
function signMachOExecutable(executable) {
try {
child_process_1.execFileSync('codesign', ['--sign', '-', executable], { stdio: 'inherit' });
}
catch (_a) {
child_process_1.execFileSync('ldid', ['-S', executable], { stdio: 'inherit' });
}
}
exports.signMachOExecutable = signMachOExecutable;
//# sourceMappingURL=mach-o.js.map