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const archiver = require('archiver');
const fs = require('fs');
const crypto = require('crypto');
function jwt_secret() {
let file = fs.readFileSync( '../data/jwt_secret.txt', 'utf8' );
if( file.endsWith( '\n' ) ) {
file = file.slice( 0, -1 );
}
return file;
}
function read( filename ) {
const contents = fs.readFileSync( filename, 'utf8' );
const salt = Buffer.from( contents.slice( 0, 32 ), 'hex' );
const iv = Buffer.from( contents.slice( 32, 56 ), 'hex' );
const authTag = Buffer.from( contents.slice( 56, 88 ), 'hex' );
const data = contents.slice( 88 );
const key = crypto.pbkdf2Sync( jwt_secret(), salt, 100000, 32, 'sha512' );
const decipher = crypto.createDecipheriv( 'aes-256-gcm', key, iv );
decipher.setAuthTag( authTag );
let decrypted = decipher.update( data, 'hex', 'utf8' );
decrypted += decipher.final( 'utf8' );
return decrypted;
}
async function main() {
try {
const userdata = JSON.parse( JSON.parse( process.argv[2] ) );
const archive = archiver( 'zip', {
zlib: { level: 9 }
} );
archive.pipe( process.stdout );
archive.append( process.argv[2], { name: '000-user.json' } );
const chats = userdata.chat_files;
for( let chat of chats.files ) {
if( !chat.id )
continue;
try {
let chatFile = read( `../data/chats/${chat.id}.json` );
archive.append( chatFile, { name: chat.id + '.json' } );
} catch( e ) {}
}
try {
let notesFile = fs.readFileSync( `../data/notes/${userdata.uuid}-notes.json` );
archive.append( notesFile, { name: `${userdata.uuid}-notes.json` } );
} catch( e ) {
archive.append( "{}", { name: `${userdata.uuid}-notes.json` } );
}
archive.finalize();
} catch (e) {
console.log( '0' );
console.log( e );
}
}
main();
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