CDSI Support

ts/textsecure/cds/CDSI.ts

@@ -0,0 +1,43 @@
+// Copyright 2022 Signal Messenger, LLC
+// SPDX-License-Identifier: AGPL-3.0-only
+
+import type { connection as WebSocket } from 'websocket';
+
+import * as Bytes from '../../Bytes';
+import { CDSISocket } from './CDSISocket';
+import type { CDSSocketManagerBaseOptionsType } from './CDSSocketManagerBase';
+import { CDSSocketManagerBase } from './CDSSocketManagerBase';
+
+export type CDSIOptionsType = Readonly<{
+  mrenclave: string;
+  root: string;
+}> &
+  CDSSocketManagerBaseOptionsType;
+
+export class CDSI extends CDSSocketManagerBase<CDSISocket, CDSIOptionsType> {
+  private readonly mrenclave: Buffer;
+
+  private readonly trustedCaCert: Buffer;
+
+  constructor(options: CDSIOptionsType) {
+    super(options);
+
+    this.mrenclave = Buffer.from(Bytes.fromHex(options.mrenclave));
+    this.trustedCaCert = Buffer.from(options.root);
+  }
+
+  protected override getSocketUrl(): string {
+    const { mrenclave } = this.options;
+
+    return `${this.options.url}/v1/${mrenclave}/discovery`;
+  }
+
+  protected override createSocket(socket: WebSocket): CDSISocket {
+    return new CDSISocket({
+      logger: this.logger,
+      socket,
+      mrenclave: this.mrenclave,
+      trustedCaCert: this.trustedCaCert,
+    });
+  }
+}