Restrict NPM | npm.io

restrict

Nodejs module that blocks applications from using procss.binding('process_wrap'), process.kill and child_process methods. This protects applications from invoking these methods unintentionally, that could harm the functioning of the framework or application being developed.

This package is tested only with Node versions 8 and 10.

install

With npm do:

npm install restrict

usage

var restrict = require('restrict');
// ls is whitelisted
restrict({
    'whitelist': ['ls'],
    'whitelistPath': ['/bin']
});

//set whitelist can be invoked, if the whitelist is dynamic
restrict.setWhitelist(['grep'], ['/bin', '/usr/bin']);

var child_process = require('child_process');
try {
    // ls is whitelisted. So you can see the output of ls
    child_process.exec('/bin/ls', function (err, stdout, stderr) {
        console.log(stdout);
    });
    // grep is not whitelisted. Exception thrown
    child_process.spawn('grep', ['ssh']);
} catch (e) {
    //this will throw an error
    //[Error: Function call spawn() is prohibited in this environment.]
    console.log(e);
}
try {
    process.kill(30);
} catch (e) {
    //this will throw an error
    //[Error: Function call process.kill() is prohibited in this environment.]
    console.log(e);
}