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Текущая директория: /usr/lib/node_modules/bitgo/node_modules/react-native/Libraries/WebSocket
Просмотр файла: WebSocketInterceptor.js
/**
* Copyright (c) Meta Platforms, Inc. and affiliates.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*
* @flow strict-local
* @format
*/
import NativeEventEmitter from '../EventEmitter/NativeEventEmitter';
import Platform from '../Utilities/Platform';
import NativeWebSocketModule from './NativeWebSocketModule';
import base64 from 'base64-js';
const originalRCTWebSocketConnect = NativeWebSocketModule.connect;
const originalRCTWebSocketSend = NativeWebSocketModule.send;
const originalRCTWebSocketSendBinary = NativeWebSocketModule.sendBinary;
const originalRCTWebSocketClose = NativeWebSocketModule.close;
let eventEmitter;
let subscriptions;
let closeCallback;
let sendCallback;
let connectCallback;
let onOpenCallback;
let onMessageCallback;
let onErrorCallback;
let onCloseCallback;
let isInterceptorEnabled = false;
/**
* A network interceptor which monkey-patches RCTWebSocketModule methods
* to gather all websocket network requests/responses, in order to show
* their information in the React Native inspector development tool.
*/
const WebSocketInterceptor = {
/**
* Invoked when RCTWebSocketModule.close(...) is called.
* The callback is invoked with the following parameters:
* - `'code'` - The status code explaining why the connection was closed,
* - `'reason'` - The reason explaining why the connection was closed,
* - `'socketId'` - The id of the socket.
*/
setCloseCallback(callback: ?(number | null, string | null, number) => void) {
closeCallback = callback;
},
/**
* Invoked when RCTWebSocketModule.send(...) or sendBinary(...) is called.
* The callback is invoked with the following parameters:
* - `'data'` - The data sent,
* - `'socketId'` - The id of the socket.
*/
setSendCallback(callback: ?(string | ArrayBuffer, number) => void) {
sendCallback = callback;
},
/**
* Invoked when RCTWebSocketModule.connect(...) is called.
* The callback is invoked with the following parameters:
* - `'url'` - The url of the socket,
* - `'protocols'` - The protocols of the socket,
* - `'options'` - The options of the socket,
* - `'socketId'` - The id of the socket.
*/
setConnectCallback(
callback: ?(string, Array<string> | null, Array<string>, number) => void,
) {
connectCallback = callback;
},
/**
* Invoked when event "websocketOpen" happens.
* The callback is invoked with the following parameters:
* - `'socketId'` - The id of the socket.
*/
setOnOpenCallback(callback: ?(number) => void) {
onOpenCallback = callback;
},
/**
* Invoked when event "websocketMessage" happens.
* The callback is invoked with the following parameters:
* - `'data'` - The data received,
* - `'socketId'` - The id of the socket.
*/
setOnMessageCallback(callback: ?(string | ArrayBuffer, number) => void) {
onMessageCallback = callback;
},
/**
* Invoked when event "websocketFailed" happens.
* The callback is invoked with the following parameters:
* - `'message'` - The error message,
* - `'socketId'` - The id of the socket.
*/
setOnErrorCallback(callback: ?({message: string}, number) => void) {
onErrorCallback = callback;
},
/**
* Invoked when event "websocketClosed" happens.
* The callback is invoked with the following parameters:
* - `'code'` - The status code explaining why the connection was closed,
* - `'reason'` - The reason explaining why the connection was closed,
* - `'socketId'` - The id of the socket.
*/
setOnCloseCallback(
callback: ?({code: number, reason: ?string}, number) => void,
) {
onCloseCallback = callback;
},
isInterceptorEnabled(): boolean {
return isInterceptorEnabled;
},
_unregisterEvents() {
subscriptions.forEach(e => e.remove());
subscriptions = [];
},
/**
* Add listeners to the RCTWebSocketModule events to intercept them.
*/
_registerEvents() {
subscriptions = [
// $FlowFixMe[incompatible-type]
eventEmitter.addListener('websocketMessage', ev => {
if (onMessageCallback) {
onMessageCallback(
ev.type === 'binary'
? WebSocketInterceptor._arrayBufferToString(ev.data)
: ev.data,
ev.id,
);
}
}),
// $FlowFixMe[incompatible-type]
eventEmitter.addListener('websocketOpen', ev => {
if (onOpenCallback) {
onOpenCallback(ev.id);
}
}),
// $FlowFixMe[incompatible-type]
eventEmitter.addListener('websocketClosed', ev => {
if (onCloseCallback) {
onCloseCallback({code: ev.code, reason: ev.reason}, ev.id);
}
}),
// $FlowFixMe[incompatible-type]
eventEmitter.addListener('websocketFailed', ev => {
if (onErrorCallback) {
onErrorCallback({message: ev.message}, ev.id);
}
}),
];
},
enableInterception() {
if (isInterceptorEnabled) {
return;
}
// $FlowFixMe[underconstrained-implicit-instantiation]
eventEmitter = new NativeEventEmitter(
// T88715063: NativeEventEmitter only used this parameter on iOS. Now it uses it on all platforms, so this code was modified automatically to preserve its behavior
// If you want to use the native module on other platforms, please remove this condition and test its behavior
Platform.OS !== 'ios' ? null : NativeWebSocketModule,
);
WebSocketInterceptor._registerEvents();
// Override `connect` method for all RCTWebSocketModule requests
// to intercept the request url, protocols, options and socketId,
// then pass them through the `connectCallback`.
// $FlowFixMe[cannot-write]
// $FlowFixMe[missing-this-annot]
NativeWebSocketModule.connect = function (
url: string,
protocols: Array<string> | null,
options: $FlowFixMe,
socketId: number,
) {
if (connectCallback) {
connectCallback(url, protocols, options, socketId);
}
originalRCTWebSocketConnect.apply(this, arguments);
};
// Override `send` method for all RCTWebSocketModule requests to intercept
// the data sent, then pass them through the `sendCallback`.
// $FlowFixMe[cannot-write]
// $FlowFixMe[missing-this-annot]
NativeWebSocketModule.send = function (data, socketId) {
if (sendCallback) {
sendCallback(data, socketId);
}
originalRCTWebSocketSend.apply(this, arguments);
};
// Override `sendBinary` method for all RCTWebSocketModule requests to
// intercept the data sent, then pass them through the `sendCallback`.
// $FlowFixMe[cannot-write]
// $FlowFixMe[missing-this-annot]
NativeWebSocketModule.sendBinary = function (data, socketId) {
if (sendCallback) {
sendCallback(WebSocketInterceptor._arrayBufferToString(data), socketId);
}
originalRCTWebSocketSendBinary.apply(this, arguments);
};
// Override `close` method for all RCTWebSocketModule requests to intercept
// the close information, then pass them through the `closeCallback`.
// $FlowFixMe[cannot-write]
// $FlowFixMe[missing-this-annot]
NativeWebSocketModule.close = function () {
if (closeCallback) {
if (arguments.length === 3) {
closeCallback(arguments[0], arguments[1], arguments[2]);
} else {
closeCallback(null, null, arguments[0]);
}
}
originalRCTWebSocketClose.apply(this, arguments);
};
isInterceptorEnabled = true;
},
_arrayBufferToString(data: string): ArrayBuffer | string {
const value = base64.toByteArray(data).buffer;
if (value === undefined || value === null) {
return '(no value)';
}
if (
typeof ArrayBuffer !== 'undefined' &&
typeof Uint8Array !== 'undefined' &&
value instanceof ArrayBuffer
) {
return `ArrayBuffer {${String(Array.from(new Uint8Array(value)))}}`;
}
return value;
},
// Unpatch RCTWebSocketModule methods and remove the callbacks.
disableInterception() {
if (!isInterceptorEnabled) {
return;
}
isInterceptorEnabled = false;
// $FlowFixMe[cannot-write]
NativeWebSocketModule.send = originalRCTWebSocketSend;
// $FlowFixMe[cannot-write]
NativeWebSocketModule.sendBinary = originalRCTWebSocketSendBinary;
// $FlowFixMe[cannot-write]
NativeWebSocketModule.close = originalRCTWebSocketClose;
// $FlowFixMe[cannot-write]
NativeWebSocketModule.connect = originalRCTWebSocketConnect;
connectCallback = null;
closeCallback = null;
sendCallback = null;
onOpenCallback = null;
onMessageCallback = null;
onCloseCallback = null;
onErrorCallback = null;
WebSocketInterceptor._unregisterEvents();
},
};
export default WebSocketInterceptor;
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