Firelink/scripts/appimage-offset.js at df0b20928be058416afa7b7d01f929c78ef1fa28 - Firelink - Grace Solutions

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NimBold 1c5895156a fix(release): inspect AppImage SquashFS at runtime offset

- Read SquashFS permissions after locating the embedded filesystem.
- Reject malformed and unsafe AppImage offsets.
- Cover offset parsing with regression tests.

2026-10-10 00:11:51 +03:30

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JavaScript

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 export function parseAppImageOffset(output) {
   const offset = typeof output === 'string' ? output.trim() : '';
   if (!/^[1-9]\d*$/.test(offset) || !Number.isSafeInteger(Number(offset))) {
     throw new Error('AppImage runtime returned an invalid SquashFS offset.');
   }
   return offset;
 }