moved all xhr related stuff to a seperate class

We can replace this if we want to use jquery ajax or similar. Also this has all the urls so it's super easy to overwrite

1 files changed, 124 insertions, 0 deletions

diff --git a/lib/plainXHR.js b/lib/plainXHR.js
new file mode 100644
index 0000000..44ee5df
--- /dev/null
+++ b/lib/plainXHR.js
@@ -0,0 +1,124 @@
+plainXHR = function() {
+
+  function getUrl()
+  {
+    return "";
+  }
+
+  function paths(path)
+  {
+    return path
+  }
+
+  // Perform ajax requests at the specified path, with the specified parameters
+  // Calling back the specified function.
+  function ajaxRequest(relative_path, params, callback)
+  {
+    var full_url = this.geturl() + this.paths(relative_path);
+    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", full_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;
+  };
+
+  function register(I, callback)
+  {
+    this.ajaxRequest("register/salt/", "I="+I, callback);
+  }
+
+  function sendVerifier(v, callback) {
+    this.ajaxRequest("register/user/", "v="+v, callback);
+  }
+
+  function handshake(I, Astr, callback) {
+    this.ajaxRequest("handshake/", "I="+I+"&A="+Astr, callback);
+  }
+
+  function authenticate(M, callback) {
+    this.ajaxRequest("authenticate/", "M="+M, callback);
+  }
+
+  function upgrade(M, callback) {
+    this.ajaxRequest("upgrade/authenticate/", "M="+M, callback);
+  }
+
+  return {
+    geturl: getUrl,
+    paths: paths,
+    ajaxRequest: ajaxRequest,
+    register: register,
+    register_send_verifier: sendVerifier,
+    handshake: handshake,
+    authenticate: authenticate,
+    upgrade: upgrade
+  }
+}