Ensure remote backend command requests are only executed once

Fixes microsoft#121926

Author: Tyriar

src/vs/server/node/remoteTerminalChannel.ts

@@ -89,7 +89,7 @@ export class RemoteTerminalChannel extends Disposable implements IServerChannel<
 		uriTransformer: IURITransformer;
 	}>();
 
-	private readonly _onExecuteCommand = this._register(new Emitter<{ reqId: number; commandId: string; commandArgs: any[] }>());
+	private readonly _onExecuteCommand = this._register(new Emitter<{ reqId: number; persistentProcessId: number; commandId: string; commandArgs: any[] }>());
 	readonly onExecuteCommand = this._onExecuteCommand.event;
 
 	constructor(
@@ -240,21 +240,21 @@ export class RemoteTerminalChannel extends Disposable implements IServerChannel<
 		// Setup the CLI server to support forwarding commands run from the CLI
 		const ipcHandlePath = createRandomIPCHandle();
 		env.VSCODE_IPC_HOOK_CLI = ipcHandlePath;
+
+		const persistentProcessId = await this._ptyService.createProcess(shellLaunchConfig, initialCwd, args.cols, args.rows, args.unicodeVersion, env, baseEnv, args.options, args.shouldPersistTerminal, args.workspaceId, args.workspaceName);
 		const commandsExecuter: ICommandsExecuter = {
-			executeCommand: <T>(id: string, ...args: any[]): Promise<T> => this._executeCommand(id, args, uriTransformer)
+			executeCommand: <T>(id: string, ...args: any[]): Promise<T> => this._executeCommand(persistentProcessId, id, args, uriTransformer)
 		};
 		const cliServer = new CLIServerBase(commandsExecuter, this._logService, ipcHandlePath);
-
-		const id = await this._ptyService.createProcess(shellLaunchConfig, initialCwd, args.cols, args.rows, args.unicodeVersion, env, baseEnv, args.options, args.shouldPersistTerminal, args.workspaceId, args.workspaceName);
-		this._ptyService.onProcessExit(e => e.id === id && cliServer.dispose());
+		this._ptyService.onProcessExit(e => e.id === persistentProcessId && cliServer.dispose());
 
 		return {
-			persistentTerminalId: id,
+			persistentTerminalId: persistentProcessId,
 			resolvedShellLaunchConfig: shellLaunchConfig
 		};
 	}
 
-	private _executeCommand<T>(commandId: string, commandArgs: any[], uriTransformer: IURITransformer): Promise<T> {
+	private _executeCommand<T>(persistentProcessId: number, commandId: string, commandArgs: any[], uriTransformer: IURITransformer): Promise<T> {
 		let resolve!: (data: any) => void;
 		let reject!: (err: any) => void;
 		const result = new Promise<T>((_resolve, _reject) => {
@@ -277,6 +277,7 @@ export class RemoteTerminalChannel extends Disposable implements IServerChannel<
 		});
 		this._onExecuteCommand.fire({
 			reqId,
+			persistentProcessId,
 			commandId,
 			commandArgs: serializedCommandArgs
 		});

src/vs/workbench/contrib/terminal/browser/remoteTerminalBackend.ts

@@ -92,6 +92,11 @@ class RemoteTerminalBackend extends BaseTerminalBackend implements ITerminalBack
 
 		const allowedCommands = ['_remoteCLI.openExternal', '_remoteCLI.windowOpen', '_remoteCLI.getSystemStatus', '_remoteCLI.manageExtensions'];
 		this._remoteTerminalChannel.onExecuteCommand(async e => {
+			// Ensure this request for for this window
+			const pty = this._ptys.get(e.persistentProcessId);
+			if (!pty) {
+				return;
+			}
 			const reqId = e.reqId;
 			const commandId = e.commandId;
 			if (!allowedCommands.includes(commandId)) {

src/vs/workbench/contrib/terminal/common/remoteTerminalChannel.ts

@@ -88,8 +88,8 @@ export class RemoteTerminalChannelClient implements IPtyHostController {
 	get onProcessOrphanQuestion(): Event<{ id: number }> {
 		return this._channel.listen<{ id: number }>('$onProcessOrphanQuestion');
 	}
-	get onExecuteCommand(): Event<{ reqId: number; commandId: string; commandArgs: any[] }> {
-		return this._channel.listen<{ reqId: number; commandId: string; commandArgs: any[] }>('$onExecuteCommand');
+	get onExecuteCommand(): Event<{ reqId: number; persistentProcessId: number; commandId: string; commandArgs: any[] }> {
+		return this._channel.listen<{ reqId: number; persistentProcessId: number; commandId: string; commandArgs: any[] }>('$onExecuteCommand');
 	}
 	get onDidRequestDetach(): Event<{ requestId: number; workspaceId: string; instanceId: number }> {
 		return this._channel.listen<{ requestId: number; workspaceId: string; instanceId: number }>('$onDidRequestDetach');