csp-parse

NodeJS module for parsing Content-Security-policy policies.
The module takes raw CSP policy strings, and parses them into Policy objects. From there the objects can be manipulated (adding/removing different values from the directives).
Afterwards policy.toString() can be called to get the updated policy.

Installation

npm install csp-parse

Or to use as plain javascript, remove the last line.

Usage

var Policy = require('csp-parse');

var example = "script-src 'self' www.google-analytics.com ajax.googleapis.com; style-src 'self';"
var policy = new Policy(example)

policy.get('script-src') // "'self' www.google-analytics.com ajax.googleapis.com"
policy.add('script-src', 'code.jquery.com');
policy.get('script-src') // "'self' www.google-analytics.com ajax.googleapis.com code.jquery.com"

policy.toString() // "script-src 'self' www.google-analytics.com ajax.googleapis.com code.jquery.com; style-src 'self';"

policy.set('connect-src', 'socket.webserver.com socket2.webserver.com');

policy.toPrettyString()
//script-src
//  'self' www.google-analytics.com ajax.googleapis.com code.jquery.com;
//style-src
//  'self';
//connect-src
//  socket.webserver.com socket2.webserver.com

For more examples see the test cases.

API

Policy(string)

Takes a CSP policy and returns a Policy object.

policy.get(string directive)

Returns a list of allowed values for 'directive'

policy.add(string directive, string value)

Adds the value to the directive string

policy.set(string diretcive, string line)

Sets the 'directive' value to 'line'

Policy.toString()

Returns string representation of policy

Policy.toPrettyString()

Returns a pretty string representation of the policy

Test

mocha

/brain explodes

Contact

c0nrad@c0nrad.io