# OAuth driver that redirects the browser to a node app to complete the flow.
#
# This is useful for testing node.js libraries and applications.
class Dropbox.Drivers.NodeServer
# Starts up the node app that intercepts the browser redirect.
#
# @param {?Object} options one or more of the options below
# @option options {Number} port the number of the TCP port that will receive
# HTTP requests
# @param {String} faviconFile the path to a file that will be served at
# /favicon.ico
constructor: (options) ->
@port = options?.port or 8912
@faviconFile = options?.favicon or null
# Calling require in the constructor because this doesn't work in browsers.
@fs = require 'fs'
@http = require 'http'
@open = require 'open'
@callbacks = {}
@urlRe = new RegExp "^/oauth_callback\\?"
@tokenRe = new RegExp "(\\?|&)oauth_token=([^&]+)(&|$)"
@createApp()
# URL to the node.js OAuth callback handler.
url: ->
"http://localhost:#{@port}/oauth_callback"
# Opens the token
doAuthorize: (authUrl, token, tokenSecret, callback) ->
@callbacks[token] = callback
@openBrowser authUrl
# Opens the given URL in a browser.
openBrowser: (url) ->
unless url.match /^https?:\/\//
throw new Error("Not a http/https URL: #{url}")
@open url
# Creates and starts up an HTTP server that will intercept the redirect.
createApp: ->
@app = @http.createServer (request, response) =>
@doRequest request, response
@app.listen @port
# Shuts down the HTTP server.
#
# The driver will become unusable after this call.
closeServer: ->
@app.close()
# Reads out an /authorize callback.
doRequest: (request, response) ->
if @urlRe.exec request.url
match = @tokenRe.exec request.url
if match
token = decodeURIComponent match[2]
if @callbacks[token]
@callbacks[token]()
delete @callbacks[token]
data = ''
request.on 'data', (dataFragment) -> data += dataFragment
request.on 'end', =>
if @faviconFile and (request.url is '/favicon.ico')
@sendFavicon response
else
@closeBrowser response
# Renders a response that will close the browser window used for OAuth.
closeBrowser: (response) ->
closeHtml = """
Please close this window.
"""
response.writeHead(200,
{'Content-Length': closeHtml.length, 'Content-Type': 'text/html' })
response.write closeHtml
response.end
# Renders the favicon file.
sendFavicon: (response) ->
@fs.readFile @faviconFile, (error, data) ->
response.writeHead(200,
{ 'Content-Length': data.length, 'Content-Type': 'image/x-icon' })
response.write data
response.end