80 lines
2.4 KiB
TypeScript
80 lines
2.4 KiB
TypeScript
// Copyright 2021 Signal Messenger, LLC
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// SPDX-License-Identifier: AGPL-3.0-only
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import ProxyAgent from 'proxy-agent';
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import { HsmEnclaveClient, PublicKey } from '@signalapp/signal-client';
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import type { connection as WebSocket } from 'websocket';
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import * as Bytes from '../Bytes';
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import { prefixPublicKey } from '../Curve';
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import type { AbortableProcess } from '../util/AbortableProcess';
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import * as log from '../logging/log';
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import type { UUIDStringType } from '../types/UUID';
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import { CDSSocket } from './CDSSocket';
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import type { CDSRequestOptionsType } from './CDSSocket';
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import { connect as connectWebSocket } from './WebSocket';
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export type CDSSocketManagerOptionsType = Readonly<{
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url: string;
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publicKey: string;
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codeHash: string;
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certificateAuthority: string;
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proxyUrl?: string;
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version: string;
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}>;
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export class CDSSocketManager {
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private readonly publicKey: PublicKey;
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private readonly codeHash: Buffer;
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private readonly proxyAgent?: ReturnType<typeof ProxyAgent>;
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constructor(private readonly options: CDSSocketManagerOptionsType) {
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this.publicKey = PublicKey.deserialize(
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Buffer.from(prefixPublicKey(Bytes.fromHex(options.publicKey)))
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);
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this.codeHash = Buffer.from(Bytes.fromHex(options.codeHash));
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if (options.proxyUrl) {
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this.proxyAgent = new ProxyAgent(options.proxyUrl);
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}
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}
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public async request(
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options: CDSRequestOptionsType
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): Promise<ReadonlyArray<UUIDStringType | null>> {
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log.info('CDSSocketManager: connecting socket');
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const socket = await this.connect().getResult();
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log.info('CDSSocketManager: connected socket');
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try {
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return await socket.request(options);
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} finally {
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log.info('CDSSocketManager: closing socket');
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socket.close(3000, 'Normal');
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}
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}
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private connect(): AbortableProcess<CDSSocket> {
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const enclaveClient = HsmEnclaveClient.new(this.publicKey, [this.codeHash]);
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const {
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publicKey: publicKeyHex,
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codeHash: codeHashHex,
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version,
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} = this.options;
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const url = `${this.options.url}/discovery/${publicKeyHex}/${codeHashHex}`;
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return connectWebSocket<CDSSocket>({
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url,
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version,
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proxyAgent: this.proxyAgent,
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certificateAuthority: this.options.certificateAuthority,
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createResource: (socket: WebSocket): CDSSocket => {
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return new CDSSocket(socket, enclaveClient);
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},
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});
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}
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}
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