javascript sandbox

用途

https://github.com/gf3/sandbox

• Can be used to execute untrusted code.
• Support for timeouts (e.g. prevent infinite loops)
• Support for memory errors (and memory errors)
• Handles errors gracefully
• Restricted code (cannot access node.js methods)
• Supports console.log and print utility methods
• Supports interprocess messaging with the sandboxed code

例子

https://github.com/gf3/sandbox/blob/master/example/example.js

var Sandbox = require("../lib/sandbox")
  , s = new Sandbox()

// Example 1 - Standard JS
s.run( "1 + 1", function( output ) {
  console.log( "Example 1: " + output.result + "\n" )
})

通信

箱内和向外相互通信。

Sandboxed code:

onmessage = function(message){
  if (message === 'hello from outside') {
    postMessage('hello from inside');
  }
};

Sandbox:

var sandbox = new Sandbox();
sandbox.run(sandboxed_code);
sandbox.on('message', function(message){
  // Handle message sent from the inside
  // In this example message will be 'hello from inside'
});
sandbox.postMessage('hello from outside');

// Example 11 - IPC Messaging
s.run( "onmessage = function(message){ if (message === 'hello from outside') { postMessage('hello from inside'); };", function(output){

})
s.on('message', function(message){
  console.log("Example 11: received message sent from inside the sandbox '" + message + "'\n")
});
var test_message = "hello from outside";
console.log("Example 11: sending message into the sandbox '" + test_message + "'");
s.postMessage(test_message);