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SRP.prototype.Remote = function() {
// Perform ajax requests at the specified path, with the specified parameters
// Calling back the specified function.
function ajaxRequest(url, params, callback)
{
if( window.XMLHttpRequest)
xhr = new XMLHttpRequest();
else if (window.ActiveXObject){
try{
xhr = new ActiveXObject("Microsoft.XMLHTTP");
}catch (e){}
}
else
{
session.error_message("Ajax not supported.");
return;
}
if(xhr){
xhr.onreadystatechange = function() {
if(xhr.readyState == 4 && xhr.status == 200) {
callback(parseResponse());
}
};
xhr.open("POST", url, true);
xhr.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
xhr.setRequestHeader("Content-length", params.length);
xhr.send(params);
}
else
{
session.error_message("Ajax failed.");
}
};
function parseResponse() {
if (responseIsXML()) {
return parseXML(xhr.responseXML);
} else if (responseIsJSON()) {
return JSON.parse(xhr.responseText);
}
};
function responseIsXML() {
return (xhr.responseType == 'document') ||
(xhr.getResponseHeader("Content-Type").indexOf('application/xml') >= 0)
}
function responseIsJSON() {
return (xhr.responseType == 'json') ||
(xhr.getResponseHeader("Content-Type").indexOf('application/json') >= 0)
}
function parseXML(xml) {
if (xml.getElementsByTagName("r").length > 0) {
return parseAttributesOfElement(xml.getElementsByTagName("r")[0]);
} else {
return parseNodes(xml.childNodes);
}
};
function parseAttributesOfElement(elem) {
var response = {};
for (var i = 0; i < elem.attributes.length; i++) {
var attrib = elem.attributes[i];
if (attrib.specified) {
response[attrib.name] = attrib.value;
}
}
return response;
};
function parseNodes(nodes) {
var response = {};
for (var i = 0; i < nodes.length; i++) {
var node = nodes[i];
response[node.tagName] = node.textContent || true;
}
return response;
};
this.register = function(session, callback)
{
ajaxRequest("register/salt/", "I="+session.getI(), callback);
}
this.sendVerifier = function(session, callback) {
ajaxRequest("register/user/", "v="+session.getV().toString(16), callback);
}
this.handshake = function(session, callback) {
ajaxRequest("handshake/", "I="+session.getI()+"&A="+session.getAstr(), callback);
}
this.authenticate = function(session, callback) {
ajaxRequest("authenticate/", "M="+session.getM(), callback);
}
}
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