Fix Node.js test program to work as expected

dmoj/executors/NODEJS.py

@@ -1,34 +1,44 @@
 from dmoj.executors.script_executor import ScriptExecutor
+from dmoj.cptbox.filesystem_policies import ExactFile
+
 
 class Executor(ScriptExecutor):
     ext = 'js'
     command = 'node'
+    nproc = -1
     command_paths = ['node', 'nodejs']
     syscalls = [
+        # Start syscalls copied from COFFEE.py
         'capget',
         'eventfd2',
         'newselect',
         'sched_yield',
         'select',
         'setrlimit',
         'statx',
+        # End syscalls copied from COFFEE.py
+
+        # Without this, we get
+        # > Protection fault on: 425 (sys_io_uring_setup)
+        'io_uring_setup',
+        # Without this, when running an actual test case (though not the
+        # self-test), we get
+        # > RTE (shutdown syscall disallowed)
+        'shutdown'
     ]
     address_grace = 1048576
     test_program = """
-process.stdin.resume();
-process.stdin.setEncoding('utf-8');
-
-let inputString = '';
-
-process.stdin.on('data', function(inputStdin) {
-    inputString += inputStdin;
-});
-
-process.stdin.on('end', function() {
-    process.stdout.write(inputString);
+process.stdin.on('readable', () => {
+    const chunk = process.stdin.read();
+    if (chunk != null) {
+        process.stdout.write(chunk);
+    }
 });
 """
 
+    def get_fs(self):
+        return super().get_fs() + [ExactFile('/usr/lib/ssl/openssl.cnf')]
+
     @classmethod
     def get_version_flags(cls, command):
         return ['--version']