[sandbox] Catch broken pipes

sandbox/src/index.ts

@@ -11,7 +11,13 @@ import { runCpp } from './run/cpp.js';
 
 export const timeoutSeconds = 30;
 
-const RunResultKind = z.enum(['CompileFailed', 'TimeLimitExceeded', 'Completed', 'SandboxError', 'RunError']);
+const RunResultKind = z.enum([
+	'CompileFailed',
+	'TimeLimitExceeded',
+	'Completed',
+	'SandboxError',
+	'RunError'
+]);
 export type RunResultKind = z.infer<typeof RunResultKind>;
 
 const RunResult = z

sandbox/src/run/cpp.ts

@@ -4,7 +4,6 @@ import util from 'util';
 import { RunResult, timeoutSeconds } from '../index.js';
 import { IRunner, IRunnerParams, IRunnerReturn } from './types.js';
 import kill from 'tree-kill';
-import * as fs from 'fs';
 
 const execPromise = util.promisify(exec);
 

sandbox/src/run/csharp.ts

@@ -14,6 +14,7 @@ export const runCSharp: IRunner = async function (params: {
 	console.log(`- RUN: ${params.srcDir}`);
 	const child = spawn('dotnet run', { shell: true, cwd: params.srcDir });
 
+	try {
 		let outputBuffer = '';
 		child.stdout.setEncoding('utf8');
 		child.stdout.on('data', (data) => {
@@ -86,4 +87,7 @@ export const runCSharp: IRunner = async function (params: {
 				}
 			}
 		};
+	} catch (error) {
+		return { success: false, runResult: { kind: 'RunError' } };
+	}
 };

sandbox/src/run/java.ts

@@ -35,6 +35,7 @@ export const runJava: IRunner<IRunnerParamsJava> = async function (
 	console.log(`- RUN: ${params.mainClass}`);
 	const runCommand = `java -cp "${join(params.srcDir, 'build')}" ${params.mainClass}`;
 
+	try {
 		let outputBuffer = '';
 		const child = spawn(runCommand, { shell: true });
 		child.stdout.setEncoding('utf8');
@@ -104,4 +105,7 @@ export const runJava: IRunner<IRunnerParamsJava> = async function (
 				}
 			}
 		};
+	} catch (error) {
+		return { success: false, runResult: { kind: 'RunError' } };
+	}
 };