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OAuth 1.0a client library for Node.js
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README.md

Introduction

node-oauth-lite is a lightweight OAuth 1.0a client library for Node.js. It's designed for use with any HTTP client library, and supports Google's XOAUTH mechanism for SMTP and IMAP authentication.

Example Usage

Fetching a Request Token

oauth = require("oauth-lite")

state =
  oauth_consumer_key: 'anonymous'       # Google do not require pre-registration of OAuth clients
  oauth_consumer_secret: 'anonymous'
  oauth_callback: 'oob'                 # A web-app would usually provide the provider a callback URL instead.

url = 'https://www.google.com/accounts/OAuthGetRequestToken'

form =                                   # Additional request parameters specific to Google's API
  xoauth_displayname: 'node-oauth-lite'
  scope: 'https://www.googleapis.com/auth/userinfo#email'     

oauth.fetchRequestToken state, url, form, (err, params) ->
  # if the request was successful, the temporary request token
  # is supplied as params.oauth_token and params.oauth_token_secret

Authorizing a Request Token

Once a temporary request token has been generated, the user must authorize access. Usually this involves redirecting the user to an authorization page on the service provider specifying the request token as a query parameter.

If the user grants access, the service provider will provide a verification code (either via a confirmation page or HTTP callback to the client, depending on the oauth_callback parameter above) and then the request token can then be exchanged for a permanent access token.

Exchanging an authorized Request Token for an Access Token

state =
  oauth_consumer_key: 'anonymous'
  oauth_consumer_secret: 'anonymous'
  oauth_token: '<AUTHORIZED-REQUEST-TOKEN>'
  oauth_token_secret: '<AUTHORIZED-REQUEST-TOKEN-SECRET>'
  oauth_verifier: '<VERIFICATION-CODE-FROM-CALLBACK>'

url = 'https://www.google.com/accounts/OAuthGetAccessToken'

oauth.fetchAccessToken state, url, null, (err, params) =>
  # if the request was successful, the permanent access token
  # is supplied as params.oauth_token and params.oauth_token_secret

Using an Access Token

The access token can now be used to make authorized HTTP requests to the service provider on behalf of the user. Requests must include the Authenticate" header as generated by the oauth.makeAuthorizationHeader API.

https = require('https')
urllib = require('url')
oauth = require('oauth-lite')

state =
  oauth_consumer_key: 'anonymous'
  oauth_consumer_secret: 'anonymous'
  oauth_token: '<USERS-ACCESS-TOKEN>'
  oauth_token_secret: '<USERS-ACCESS-TOKEN-SECRET>'

url = 'https://www.googleapis.com/userinfo/email'

options = urllib.parse(url, true);
options.url = options
options.method = 'GET'
options.headers =
  'Authorization': oauth.makeAuthorizationHeader(state, options)

https.get options, (response) ->
  response.on 'data', (chunk) ->
    console.log('DATA: ' + chunk)

XOAuth Support

An access token can also be used to authenticate to SMTP and IMAP servers using Google's XOAUTH mechanism.

urllib = require('url')
oauth = require('oauth-lite')
Imap = require('imap')

state =
  oauth_consumer_key: 'anonymous'
  oauth_consumer_secret: 'anonymous'
  oauth_token: '<USERS-ACCESS-TOKEN>'
  oauth_token_secret: '<USERS-ACCESS-TOKEN-SECRET>'

email = '<USERS-EMAIL>'
url = "https://mail.google.com/mail/b/#{email}/imap/"

options = urllib.parse(url)
options.method = "GET"
icr = oauth.makeClientInitialResponse(state, options)

imap = new Imap(
  xoauth: icr
  host: 'imap.gmail.com',
  port: 993,
  secure: true
)

imap.connect (err) ->
  if (err)
    console.log("IMAP connect failed", err)
    return
  console.log("connected to IMAP server")
  imap.openBox 'INBOX', true, (err, info) ->
    if (!err)
      console.log("#{info.messages.total} messages(s) in INBOX");
    imap.logout();

Reference

Tests

If you have't already done so, globally install nodeunit first with npm install -g nodeunit then run cake test to run the unit tests.

Interactive tests for some common OAuth service providers are in tests/interactive.

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