scrobble.js #2

function request(url,type,params) {
    customdebug(url); // print presentet URL
    customdebug(type); // print presentet type

    if (type === "POST") {
        var body = '<form method="post" action="' + url + '" id="form">';
        for (var param in params) {
            body += '<input type="text" name="' + param + '" value="' + params[param] + '">';
        }
        body += '</form>';
        customdebug("Sending this: "+body);
    }

    var xhr = new XMLHttpRequest(); // create new XMLHttpRequest
    //xhr.setRequestHeader("User-Agent", "Music-App/"+appVersion);
    //xhr.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');

    xhr.onreadystatechange = function() {
        if (xhr.readyState == XMLHttpRequest.HEADERS_RECEIVED) {
            showRequestInfo("Headers -->");
            showRequestInfo(xhr.getAllResponseHeaders ());
            showRequestInfo("Last modified -->");
            showRequestInfo(xhr.getResponseHeader ("Last-Modified"));
            xhr.send(body); // send the data

            // did it work?
            if (xhr.readyState==4 && xhr.status === 200) {
                customdebug("Response = " + xhr.responseText);
            }

            else {
                // This is very handy for finding out why your web service won't talk to you
                customdebug("Status: " + xhr.status + ", Status Text: " + xhr.statusText + ", Ready state: "+xhr.readyState);
            }

            customdebug("Response = " + xhr.responseText);
            return xhr.responseXML;
        }
        else if (xhr.readyState == XMLHttpRequest.DONE) {
            var a = xhr.responseXML.xhrumentElement;
            for (var ii = 0; ii < a.childNodes.length; ++ii) {
                showRequestInfo(a.childNodes[ii].nodeName);
            }
            showRequestInfo("Headers -->");
            showRequestInfo(xhr.getAllResponseHeaders ());
            showRequestInfo("Last modified -->");
            showRequestInfo(xhr.getResponseHeader ("Last-Modified"));
            customdebug("Response = " + xhr.responseText);
        }
    }
    xhr.open(type, url, true); // send the data (only async supported)
}

function authenticate(username,password) {
    // send to scrobble_url
    var signature = auth_signature(username,password);

    // create array of needed parameters for authentication
    var params = new Array();
    params[0] = "method=auth.getMobileSession";
    params[1] = "api_key="+api_key;
    params[2] = "api_sig="+signature;
    params[3] = "username="+username;
    params[4] = "password="+password;

    var answer = request(scrobble_urls,"POST",params); // send the request to the function
    customdebug("Request answered: "+answer);

    var loginstate = answer.getElementsByTagName("status").innerHTML; // get the status from the answer

    // get the key
    var lfm = answer.getElementsByTagName("lfm");
    var session = answer.getElementsByTagName("session");
    var session_key = session.getElementsByTagName("key");

    customdebug("Session key: "+session_key);
    customdebug("Login answer: "+loginstate);

    return loginstate;
}

// mobile authentication
function auth_signature(username,password) {
    var signature = Qt.md5("api_key"+api_key+"methodauth.getMobileSessionpassword"+password+"username"+username+secret_key)
    customdebug("Signature: "+signature);
    return signature
}