tweb/src/lib/crypto/cryptoworker.ts

129 lines
3.2 KiB
TypeScript

import CryptoWorkerMethods from './crypto_methods';
type Task = {
taskID: number,
task: string,
args: any[]
};
class CryptoWorker extends CryptoWorkerMethods {
private webWorker: Worker | boolean = false;
private taskID = 0;
private awaiting: {
[id: number]: {
resolve: any,
reject: any,
taskName: string
}
} = {} as any;
private pending: Array<Task> = [];
private debug = false;
private utils: {[name: string]: (...args: any[]) => any} = {};
constructor() {
super();
console.log('CW constructor');
/// #if MTPROTO_WORKER
Promise.all([
import('./crypto_utils').then(utils => {
Object.assign(this.utils, {
'sha1-hash': utils.sha1HashSync,
'sha256-hash': utils.sha256HashSync,
'pbkdf2': utils.hash_pbkdf2,
'aes-encrypt': utils.aesEncryptSync,
'aes-decrypt': utils.aesDecryptSync,
'rsa-encrypt': utils.rsaEncrypt,
'factorize': utils.pqPrimeFactorization,
'mod-pow': utils.bytesModPow,
'gzipUncompress': utils.gzipUncompress,
});
}),
import('./srp').then(srp => {
this.utils.computeSRP = srp.computeSRP;
})/* ,
import('../bin_utils').then(utils => {
this.utils.unzip = utils.gzipUncompress;
}) */
]);
return;
/// #else
if(window.Worker) {
import('./crypto.worker.js').then((worker: any) => {
var tmpWorker = new worker.default();
//var tmpWorker = new Worker();
tmpWorker.onmessage = (e: any) => {
if(!this.webWorker) {
this.webWorker = tmpWorker;
console.info('CW set webWorker');
this.releasePending();
} else {
this.finalizeTask(e.data.taskID, e.data.result);
}
};
tmpWorker.onerror = (error: any) => {
console.error('CW error', error);
this.webWorker = false;
};
});
}
/// #endif
}
/// #if !MTPROTO_WORKER
private finalizeTask(taskID: number, result: any) {
let deferred = this.awaiting[taskID];
if(deferred !== undefined) {
this.debug && console.log('CW done', deferred.taskName, result);
deferred.resolve(result);
delete this.awaiting[taskID];
}
}
/// #endif
public performTaskWorker<T>(task: string, ...args: any[]) {
this.debug && console.log('CW start', task, args);
/// #if MTPROTO_WORKER
return Promise.resolve<T>(this.utils[task](...args));
/// #else
return new Promise<T>((resolve, reject) => {
this.awaiting[this.taskID] = {resolve, reject, taskName: task};
let params = {
task,
taskID: this.taskID,
args
};
//(this.webWorker as Worker).postMessage(params);
this.pending.push(params);
this.releasePending();
this.taskID++;
});
/// #endif
}
/// #if !MTPROTO_WORKER
private releasePending() {
if(this.webWorker) {
this.pending.forEach(pending => {
(this.webWorker as Worker).postMessage(pending);
});
this.pending.length = 0;
}
}
/// #endif
}
const cryptoWorker = new CryptoWorker();
//(window as any).CryptoWorker = cryptoWorker;
export default cryptoWorker;