so-login-node.js

"use strict";

var request = require('request'),
    cheerio = require('cheerio');

function loginSEOpenID(email, password, callback) {
    console.log('SE OpenID: Loading login form');
    request.get({
        url: 'https://openid.stackexchange.com/account/login'
    }, function(error, response, body) {
        var $ = cheerio.load(body);
        var fkey = $('input[name="fkey"]').attr('value');

        console.log('SE OpenID: Logging in');
        request.post({
            url: 'https://openid.stackexchange.com/account/login/submit',
            form: {
                email: email,
                password: password,
                fkey: fkey
            }
        }, function(error, response, body) {
            console.log('SE OpenID: Logged in (hopefully)');
            callback();
        });
    });
}

function loginSO(callback) {
    console.log('SO: Loading login form');
    request.get({
        url: 'http://stackoverflow.com/users/login'
    }, function(error, response, body) {
        var $ = cheerio.load(body);
        var fkey = $('input[name="fkey"]').attr('value');

        console.log('SO: Logging in via SE OpenID');
        request.post({
            followAllRedirects: true,
            url: 'http://stackoverflow.com/users/authenticate',
            form: {
                openid_identifier: 'https://openid.stackexchange.com',
                fkey: fkey
            }
        }, function(error, response, body) {
            var $ = cheerio.load(body);
            console.log('SO: Logged in as ' + $('.profile-link').text());
            callback();
        });
    });
}

loginSEOpenID('email@address', 'password', function() {
    loginSO(function() {
        console.log('Chat: Retrieving form key');
        request.get({
            url: 'http://chat.stackoverflow.com'
        }, function(error, response, body) {
            var $ = cheerio.load(body);
            var fkey = $('input[name="fkey"]').attr('value');
            console.log('Chat: Current username: ' + $('#top-menu > a[href^="/users/"]').text());

            console.log('Chat: Sending message');
            request.post({
                url: 'http://chat.stackoverflow.com/chats/17/messages/new',
                form: {
                    text: '*the python-less node chat client says hello*',
                    fkey: fkey
                }
            }, function(error, response, body) {
                console.log('Chat: Sent message', body);
            });
        });
    });
});