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joplin/packages/app-desktop/utils/isSafeToOpen.ts

187 lines
3.2 KiB
TypeScript

import { stat } from 'fs-extra';
import { extname } from 'path';
const isSafeToOpen = async (path: string) => {
// This is intended to fix an issue where some platforms would execute attachment
// files without confirmation depending on the file extension (e.g. .EXE). This is
// mostly for Windows.
//
// Below is a list of extensions that we should be able to safely pass to shell.openItem
// without code execution.
// Prevent CSpell from marking file extensions as misspellings:
// cSpell:disable
const generallySafeExtensions = [
// Image files (see https://developer.mozilla.org/en-US/docs/Web/Media/Formats/Image_types)
'.apng',
'.avif',
'.bmp',
'.gif',
'.heic',
'.heics',
'.ico',
'.jpeg',
'.jpg',
'.pjp',
'.pjpeg',
'.png',
'.svg',
'.svgz',
'.webp',
'.tiff',
'.tif',
// Video files
'.3g2',
'.3gp',
'.avi',
'.divx',
'.h261',
'.h263',
'.h264',
'.jpgv',
'.m4p',
'.m4v',
'.mk3d',
'.mkv',
'.mov',
'.movie',
'.mp4',
'.mp4v',
'.mpeg',
'.mpg',
'.mpg4',
'.ogv',
'.webm',
'.wmv',
// Audio files
// https://developer.mozilla.org/en-US/docs/Web/Media/Formats/Containers#browser_compatibility
'.3gp',
'.aac',
'.flac',
'.m2a',
'.m3a',
'.m4a',
'.mp2',
'.mp3',
'.mpga',
'.oga',
'.ogg',
'.wav',
'.wma',
// Document files
'.epub',
'.pdf',
'.txt',
// By default (as of Feb 2024), Word/Excel disable macros by default, and should thus
// be reasonably safe to include here. Pay attention to these Office extensions in the future.
'.docx', // Word (no macros)
'.odp',
'.ods',
'.odt',
'.pptx', // PowerPoint (no macros)
// '.psd', // PhotoShop
// MS Word can try to convert RTF files, causing security issues: https://en.wikipedia.org/wiki/Rich_Text_Format#Security_concerns
// However, macros are disabled by default in modern Office.
// '.rtf',
'.xlsx', // Excel (no macros)
// '.xopp', // Xournal++ -- Can include LaTeX. Verify it's safe before including.
// Text files
'.c',
'.cjs',
'.cpp',
'.css',
'.csv',
'.cxx',
'.dart',
'.go',
'.h',
'.hh',
'.f', // Fortran
'.for',
'.f77',
'.f90',
'.hmm',
'.hpp',
'.hxx',
'.java',
'.json',
'.json5',
'.jsx',
'.log',
'.m',
'.md',
'.markdown',
'.mdx',
'.mjs',
'.mm',
'.patch',
'.r',
'.rmd',
'.rs', // Rust
'.sass',
'.scss',
'.sha256',
'.sha512',
'.swift',
'.tex',
'.toml',
'.ts',
'.tsv',
'.tsx',
'.xml',
'.yaml',
// .js may be set to run with Windows Script Host on some systems
// .ml: OCaml
// .py may be set to run with the system Python interpreter on some systems
// .rkt: Racket
// Archives
'.7z',
'.tar.gz',
'.tar',
'.zip',
// Fonts
'.ttf',
'.woff',
'.otf',
// Calendar
'.ics',
'.ical',
'.icalendar',
// Joplin
'.jex',
// '.jpl', // Plugin files
// Other
'.htm',
'.html',
'.enex', // Evernote
// '.desktop', // May be auto-executed on some Linux systems
];
// cSpell:enable
const lowercasedPath = path.trim().toLowerCase();
for (const ext of generallySafeExtensions) {
if (lowercasedPath.endsWith(ext)) {
return true;
}
}
if (extname(path) === '' && (await stat(path)).isDirectory()) {
return true;
}
return false;
};
export default isSafeToOpen;