From 7bfc8c0a6052c9bd57dedff557d97a5ae0d69131 Mon Sep 17 00:00:00 2001
From: Peter Xu <px.peter.xu@gmail.com>
Date: Fri, 8 Dec 2023 12:13:16 -0800
Subject: [PATCH] executors/NODEJS: add Node.js executor

---
 README.md                |  1 +
 dmoj/executors/NODEJS.py | 32 ++++++++++++++++++++++++++++++++
 2 files changed, 33 insertions(+)
 create mode 100644 dmoj/executors/NODEJS.py

diff --git a/README.md b/README.md
index 8e6e30615..daddcb1c7 100644
--- a/README.md
+++ b/README.md
@@ -67,6 +67,7 @@ The judge can also grade in the languages listed below:
 * Groovy
 * Haskell
 * INTERCAL
+* JavaScript (Node.js and V8)
 * Kotlin
 * Lean 4
 * LLVM IR
diff --git a/dmoj/executors/NODEJS.py b/dmoj/executors/NODEJS.py
new file mode 100644
index 000000000..e8db77ab6
--- /dev/null
+++ b/dmoj/executors/NODEJS.py
@@ -0,0 +1,32 @@
+from dmoj.cptbox.filesystem_policies import ExactFile
+from dmoj.executors.script_executor import ScriptExecutor
+
+
+class Executor(ScriptExecutor):
+    ext = 'js'
+    command = 'node'
+    nproc = -1
+    command_paths = ['node', 'nodejs']
+    syscalls = ['capget', 'eventfd2', 'shutdown']
+    address_grace = 1048576
+    test_program = """
+process.stdin.on('readable', () => {
+    const chunk = process.stdin.read();
+    if (chunk != null) {
+        process.stdout.write(chunk);
+    }
+});
+"""
+
+    def get_env(self):
+        env = super().get_env()
+        # Disable io_uring due to potential security implications
+        env['UV_USE_IO_URING'] = '0'
+        return env
+
+    def get_fs(self):
+        return super().get_fs() + [ExactFile('/usr/lib/ssl/openssl.cnf')]
+
+    @classmethod
+    def get_version_flags(cls, command):
+        return ['--version']