JSONP ADFS Pre-Auth

gistfile1.js

//Requires Jquery 1.9+

var hasPreAuthenticated = false;
var webAPIHtmlPage = "http://webapi.somedomain/preauth.html"

function preauthenticate() {

  //ADFS breaks Ajax requests, so we pre-authenticate the first call using an iFRAME and "authentication" page to get the cookies set
  
  return $.Deferred(function (d) {
  
    if (hasPreAuthenticated) {
      console.log("Already pre-authenticated, skipping");
      d.resolve();
      return;
    }
    //Potentially could make this into a little popup layer 
    //that shows we are authenticating, and allows for re-authentication if needed
    var iFrame = $("<iframe></iframe>");
    iFrame.hide();
    iFrame.appendTo("body");
    iFrame.attr('src', webAPIHtmlPage);
    
   
    iFrame.load(function () {
      hasPreAuthenticated = true;
      iFrame.remove();
      d.resolve();
    });
  
  });
  
};


function makeCall(){
  
   return authenticate().then(function () {
  
      var options = //JSONP ajaxOptions
      return $.ajax(options)
      
  });
}