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[sandbox] Catch broken pipes

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This commit is contained in:
orosmatthew 2024-02-17 15:06:49 -05:00
parent 6e673cf390
commit bd1623c09c
4 changed files with 135 additions and 122 deletions
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8
sandbox/src/index.ts
View File

@ -11,7 +11,13 @@ import { runCpp } from './run/cpp.js';
export const timeoutSeconds = 30; 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>; export type RunResultKind = z.infer<typeof RunResultKind>;
const RunResult = z const RunResult = z

1
sandbox/src/run/cpp.ts
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@ -4,7 +4,6 @@ import util from 'util';
import { RunResult, timeoutSeconds } from '../index.js'; import { RunResult, timeoutSeconds } from '../index.js';
import { IRunner, IRunnerParams, IRunnerReturn } from './types.js'; import { IRunner, IRunnerParams, IRunnerReturn } from './types.js';
import kill from 'tree-kill'; import kill from 'tree-kill';
import * as fs from 'fs';
const execPromise = util.promisify(exec); const execPromise = util.promisify(exec);

126
sandbox/src/run/csharp.ts
View File

@ -14,76 +14,80 @@ export const runCSharp: IRunner = async function (params: {
console.log(`- RUN: ${params.srcDir}`); console.log(`- RUN: ${params.srcDir}`);
const child = spawn('dotnet run', { shell: true, cwd: params.srcDir }); const child = spawn('dotnet run', { shell: true, cwd: params.srcDir });
let outputBuffer = ''; try {
child.stdout.setEncoding('utf8'); let outputBuffer = '';
child.stdout.on('data', (data) => { child.stdout.setEncoding('utf8');
outputBuffer += data.toString(); child.stdout.on('data', (data) => {
params.outputCallback?.(data.toString()); outputBuffer += data.toString();
}); params.outputCallback?.(data.toString());
child.stderr.setEncoding('utf8'); });
child.stderr.on('data', (data) => { child.stderr.setEncoding('utf8');
outputBuffer += data.toString(); child.stderr.on('data', (data) => {
params.outputCallback?.(data.toString()); outputBuffer += data.toString();
}); params.outputCallback?.(data.toString());
});
let runStartTime = performance.now(); let runStartTime = performance.now();
child.stdin.write(params.input); child.stdin.write(params.input);
child.stdin.end(); child.stdin.end();
let timeLimitExceeded = false; let timeLimitExceeded = false;
let completedNormally = false; let completedNormally = false;
return { return {
success: true, success: true,
runResult: new Promise<RunResult>((resolve) => { runResult: new Promise<RunResult>((resolve) => {
child.on('close', () => { child.on('close', () => {
completedNormally = !timeLimitExceeded; completedNormally = !timeLimitExceeded;
let runEndTime = performance.now(); let runEndTime = performance.now();
const runtimeMilliseconds = Math.floor(runEndTime - runStartTime); const runtimeMilliseconds = Math.floor(runEndTime - runStartTime);
if (completedNormally) { if (completedNormally) {
clearTimeout(timeoutHandle); clearTimeout(timeoutHandle);
resolve({ resolve({
kind: 'Completed', kind: 'Completed',
output: outputBuffer, output: outputBuffer,
exitCode: child.exitCode!, exitCode: child.exitCode!,
runtimeMilliseconds runtimeMilliseconds
}); });
} else { } else {
console.log(`Process terminated, total sandbox time: ${runtimeMilliseconds}ms`); console.log(`Process terminated, total sandbox time: ${runtimeMilliseconds}ms`);
resolve({ resolve({
kind: 'TimeLimitExceeded', kind: 'TimeLimitExceeded',
output: outputBuffer, output: outputBuffer,
resultKindReason: `Timeout after ${timeoutSeconds} seconds` resultKindReason: `Timeout after ${timeoutSeconds} seconds`
}); });
} }
}); });
let timeoutHandle = setTimeout(() => { let timeoutHandle = setTimeout(() => {
if (completedNormally) { if (completedNormally) {
return; return;
} }
console.log(`Run timed out after ${timeoutSeconds} seconds, killing process...`); console.log(`Run timed out after ${timeoutSeconds} seconds, killing process...`);
timeLimitExceeded = true; timeLimitExceeded = true;
child.stdin.end(); child.stdin.end();
child.stdin.destroy(); child.stdin.destroy();
child.stdout.destroy(); child.stdout.destroy();
child.stderr.destroy(); child.stderr.destroy();
if (child.pid !== undefined) {
kill(child.pid);
}
}, timeoutSeconds * 1000);
}),
killFunc() {
if (child.pid !== undefined) { if (child.pid !== undefined) {
kill(child.pid); if (!completedNormally && !timeLimitExceeded) {
} kill(child.pid);
}, timeoutSeconds * 1000); params.outputCallback?.('\n[Manually stopped]');
}), }
killFunc() {
if (child.pid !== undefined) {
if (!completedNormally && !timeLimitExceeded) {
kill(child.pid);
params.outputCallback?.('\n[Manually stopped]');
} }
} }
} };
}; } catch (error) {
return { success: false, runResult: { kind: 'RunError' } };
}
}; };

122
sandbox/src/run/java.ts
View File

@ -35,73 +35,77 @@ export const runJava: IRunner<IRunnerParamsJava> = async function (
console.log(`- RUN: ${params.mainClass}`); console.log(`- RUN: ${params.mainClass}`);
const runCommand = `java -cp "${join(params.srcDir, 'build')}" ${params.mainClass}`; const runCommand = `java -cp "${join(params.srcDir, 'build')}" ${params.mainClass}`;
let outputBuffer = ''; try {
const child = spawn(runCommand, { shell: true }); let outputBuffer = '';
child.stdout.setEncoding('utf8'); const child = spawn(runCommand, { shell: true });
child.stdout.on('data', (data) => { child.stdout.setEncoding('utf8');
outputBuffer += data.toString(); child.stdout.on('data', (data) => {
}); outputBuffer += data.toString();
child.stderr.setEncoding('utf8'); });
child.stderr.on('data', (data) => { child.stderr.setEncoding('utf8');
outputBuffer += data.toString(); child.stderr.on('data', (data) => {
}); outputBuffer += data.toString();
});
let runStartTime = performance.now(); let runStartTime = performance.now();
child.stdin.write(params.input); child.stdin.write(params.input);
child.stdin.end(); child.stdin.end();
let timeLimitExceeded = false; let timeLimitExceeded = false;
let completedNormally = false; let completedNormally = false;
return { return {
success: true, success: true,
runResult: new Promise<RunResult>(async (resolve) => { runResult: new Promise<RunResult>(async (resolve) => {
child.on('close', () => { child.on('close', () => {
completedNormally = !timeLimitExceeded; completedNormally = !timeLimitExceeded;
let runEndTime = performance.now(); let runEndTime = performance.now();
const runtimeMilliseconds = Math.floor(runEndTime - runStartTime); const runtimeMilliseconds = Math.floor(runEndTime - runStartTime);
if (completedNormally) { if (completedNormally) {
clearTimeout(timeoutHandle); clearTimeout(timeoutHandle);
resolve({ resolve({
kind: 'Completed', kind: 'Completed',
output: outputBuffer, output: outputBuffer,
exitCode: child.exitCode!, exitCode: child.exitCode!,
runtimeMilliseconds runtimeMilliseconds
}); });
} else { } else {
console.log(`Process terminated, total sandbox time: ${runtimeMilliseconds}ms`); console.log(`Process terminated, total sandbox time: ${runtimeMilliseconds}ms`);
resolve({ resolve({
kind: 'TimeLimitExceeded', kind: 'TimeLimitExceeded',
output: outputBuffer, output: outputBuffer,
resultKindReason: `Timeout after ${timeoutSeconds} seconds` resultKindReason: `Timeout after ${timeoutSeconds} seconds`
}); });
} }
}); });
let timeoutHandle = setTimeout(() => { let timeoutHandle = setTimeout(() => {
if (completedNormally) { if (completedNormally) {
return; return;
} }
console.log(`Run timed out after ${timeoutSeconds} seconds, killing process...`); console.log(`Run timed out after ${timeoutSeconds} seconds, killing process...`);
timeLimitExceeded = true; timeLimitExceeded = true;
child.stdin.end(); child.stdin.end();
child.stdin.destroy(); child.stdin.destroy();
child.stdout.destroy(); child.stdout.destroy();
child.stderr.destroy(); child.stderr.destroy();
child.kill('SIGKILL'); child.kill('SIGKILL');
}, timeoutSeconds * 1000); }, timeoutSeconds * 1000);
}), }),
killFunc() { killFunc() {
if (child.pid !== undefined) { if (child.pid !== undefined) {
if (!completedNormally && !timeLimitExceeded) { if (!completedNormally && !timeLimitExceeded) {
kill(child.pid); kill(child.pid);
params.outputCallback?.('\n[Manually stopped]'); params.outputCallback?.('\n[Manually stopped]');
}
} }
} }
} };
}; } catch (error) {
return { success: false, runResult: { kind: 'RunError' } };
}
}; };