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chore: Stop using node-pty in Electron renderer process
part of kubernetes-sigs#7456
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149 changes: 149 additions & 0 deletions
149
plugins/plugin-bash-like/src/pty/electron-main-channel.ts
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,149 @@ | ||
| /* | ||
| * Copyright 2021 The Kubernetes Authors | ||
| * | ||
| * Licensed under the Apache License, Version 2.0 (the "License"); | ||
| * you may not use this file except in compliance with the License. | ||
| * You may obtain a copy of the License at | ||
| * | ||
| * http://www.apache.org/licenses/LICENSE-2.0 | ||
| * | ||
| * Unless required by applicable law or agreed to in writing, software | ||
| * distributed under the License is distributed on an "AS IS" BASIS, | ||
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| * See the License for the specific language governing permissions and | ||
| * limitations under the License. | ||
| */ | ||
|
|
||
| import Debug from 'debug' | ||
| import { EventEmitter } from 'events' | ||
| import { IpcMain, IpcRenderer, WebContents } from 'electron' | ||
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| import { Channel, ReadyState } from './channel' | ||
| import { onConnection, disableBashSessions } from './server' | ||
|
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| interface Args { | ||
| execUUID: string | ||
| } | ||
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| const debugMain = Debug('plugin-bash-like/pty/electron/main') | ||
| const debugRenderer = Debug('plugin-bash-like/pty/electron/renderer') | ||
|
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| function messageChannel(execUUID) { | ||
| return `/plugin-bash-like/pty/message/${execUUID}` | ||
| } | ||
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| class ElectronMainSideChannel extends EventEmitter implements Channel { | ||
| /** is the channel alive? */ | ||
| public readonly isAlive = true | ||
|
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| public readonly readyState = ReadyState.OPEN | ||
|
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| private ipcMain: IpcMain | ||
| private otherSide: WebContents | ||
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| private messageChannel: string | ||
|
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| private handleMessage = (_, msg: string) => { | ||
| // debugMain('got message', msg) | ||
| this.emit('message', msg) | ||
| } | ||
|
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| public async init(args: Args, otherSide: WebContents) { | ||
| debugMain('main side init', args.execUUID) | ||
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| const { ipcMain } = await import('electron') | ||
| this.ipcMain = ipcMain | ||
| this.otherSide = otherSide | ||
|
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| this.messageChannel = messageChannel(args.execUUID) | ||
| ipcMain.on(this.messageChannel, this.handleMessage) | ||
|
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| await onConnection(await disableBashSessions())(this) | ||
| } | ||
|
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| /** Forcibly close the channel */ | ||
| public close() { | ||
| this.emit('exit') | ||
| this.ipcMain.off(this.messageChannel, this.handleMessage) | ||
| } | ||
|
|
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| /** Send a message over the channel */ | ||
| public send(msg: string | Buffer) { | ||
| this.otherSide.send(this.messageChannel, msg) | ||
| } | ||
|
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| // eslint-disable-next-line @typescript-eslint/no-explicit-any | ||
| public removeEventListener(eventType: string, handler: any) { | ||
| this.off(eventType, handler) | ||
| } | ||
| } | ||
|
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| export default class ElectronRendererSideChannel extends EventEmitter implements Channel { | ||
| /** is the channel alive? */ | ||
| public readonly isAlive = true | ||
|
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| public readonly readyState = ReadyState.OPEN | ||
|
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| private ipcRenderer: IpcRenderer | ||
| private messageChannel: string | ||
|
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| private handleMessage = (_, msg: string) => { | ||
| this.emit('message', msg) | ||
| } | ||
|
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| public async init(execUUID: string) { | ||
| const { ipcRenderer } = await import('electron') | ||
| this.ipcRenderer = ipcRenderer | ||
| debugRenderer('renderer side init') | ||
|
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| this.messageChannel = messageChannel(execUUID) | ||
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| ipcRenderer.once(`/exec/response/${execUUID}`, (_, _msg: string) => { | ||
| const msg = JSON.parse(_msg) | ||
| debugRenderer('renderer side init exec response', msg) | ||
| if (msg.returnValue === true) { | ||
| this.ipcRenderer.on(this.messageChannel, this.handleMessage) | ||
| this.emit('open') | ||
| } | ||
| }) | ||
|
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| ipcRenderer.send( | ||
| '/exec/invoke', | ||
| JSON.stringify({ | ||
| module: 'plugin-bash-like', | ||
| main: 'initMainPty', | ||
| hash: execUUID, | ||
| args: { | ||
| execUUID | ||
| } | ||
| }) | ||
| ) | ||
| } | ||
|
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| /** Forcibly close the channel */ | ||
| public close() { | ||
| this.send('exit') | ||
| this.ipcRenderer.off(this.messageChannel, this.handleMessage) | ||
| } | ||
|
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| /** Send a message over the channel */ | ||
| public send(msg: string | Buffer) { | ||
| this.ipcRenderer.send(this.messageChannel, msg.toString()) | ||
| } | ||
|
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| // eslint-disable-next-line @typescript-eslint/no-explicit-any | ||
| public removeEventListener(eventType: string, handler: any) { | ||
| this.off(eventType, handler) | ||
| } | ||
| } | ||
|
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| export async function initMainPty(args: Args, otherSide: WebContents) { | ||
| debugMain('initMainPty', args) | ||
| try { | ||
| await new ElectronMainSideChannel().init(args, otherSide) | ||
| return true | ||
| } catch (err) { | ||
| console.error('Error starting up pty', err) | ||
| return false | ||
| } | ||
| } |