Hello,

I recently installed mojoPortal 2.3.3.0 from source code on my development machine (windows server 2008 / IIS 7 / MSSQL) and I seem to be having problems when I try to register a new user using RPX and Facebook. The website redirects me to Facebook, where I am able to log in successfully, and then I am redirected back to my site. At this point mojoPortal asks for my email address (some additional information is required to register) and when I click the create account button, the server throws the following error:

Object reference not set to an instance of an object.
Source Error: Line 54: if (authToken.Length == 0)
Source File: C:\inetpub\wwwroot\mojoportal\Web\Secure\OpenIdRpxHandler.aspx.cs Line: 54

Stack Trace:
[NullReferenceException: Object reference not set to an instance of an object.]
mojoPortal.Web.UI.OpenIdRpxHandlerPage.Page_Load(Object sender, EventArgs e) in C:\inetpub\wwwroot\mojoportal\Web\Secure\OpenIdRpxHandler.aspx.cs:54
System.Web.UI.Control.OnLoad(EventArgs e) +131
mojoPortal.Web.mojoBasePage.OnLoad(EventArgs e) in C:\inetpub\wwwroot\mojoportal\Web\Components\mojoBasePage.cs:555
System.Web.UI.Control.LoadRecursive() +65
System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +2427

The authToken appears to be null even though you set the value here:
OpenIdRpxHandler.aspx.cs, Line 581: authToken = Request.Params.Get("token");

I am using a fresh install of mojoPortal with no custom code yet implemented. I have only seen this issue when logging in using Facebook, although the only other service I have tested is Google (which works fine). Any help you can provide would be greatly appreciated.

Thanks,
Adam

Hi Joe,

I made the change that you suggested and the server no longer throws that particular error, but registering with a Facebook account still doesn't seem to work properly. During the registration process Facebook redirects me back to my website and I am promted for an email address. When I enter the email address and click the create account button it appears as if the registration process completes and I am brought to the log in page. On this page the RPX control says "Welcome back, User." and gives me the option to sign in using my Facebook account. When I click the sign in button I am brought back to the previous OpenIdRpxHandler.aspx page and mojoPortal again asks me for my Facebook email address; and so the loop begins. I logged into mojoPortal using my administrator account and on the member list page I was able to confirm that the Facebook account is never actually added to the system. Any other suggestions? Thanks again Joe for you help.

Adam

Hello Joe,

I was able to register on mojoPortal.com using my Facebook account successfully, so it would appear that the problem is on my end. I have not made any changes to the code though, except the change you suggested previously, so I am still unsure as to why I would not be able to register on my own site. I know you mentioned that this might be a localhost issue, could you elaborate on that a little? Thanks again for your help.

Adam

Hello Joe,

I don't think I am having a localhost issue as the machine I am developing on has a public facing ip and host name, which I have been using to access and test mojoPortal. Also, it looks as if Facebook is posting back to my website correctly because mojoPortal reports that it was able to validate my Open ID.

I did have time to do some more debugging though and I found a line of code in the OpenIdRpxHandler.aspx.cs file that was preventing me from signing up with my Facebook and Twitter accounts. The line number is 62 (mojoPortal v. 2.3.3.0) and it reads as follows:

Response.Redirect(SiteRoot + "/Secure/Login.aspx");

Here is what I think was happening. When registering for an account via RPX, and that account needs more info (i.e. Email Address), the OpenIdRpxHandler.aspx page opens prompting the user for more info. Once the additional information had been entered, the user clicks the "Create Account" button and the page posts back to itself. On this post back, the above line redirects the user to the Login page before the account has a chance to be created. So to fix this I changed the above line to read:

if (!IsPostBack) Response.Redirect(SiteRoot + "/Secure/Login.aspx");

Joe, is this a safe change? It seems to have fixed the problem for me. Also, out of curiosity, is your copy of /Secure/OpenIdRpxHandler.aspx.cs that runs mojoPortal.com different then the copy found in version 2.3.3.0? I only ask because I am unsure why I was able to register on mojoportal.com as opposed to my own website using my facebook account.

Thanks for all your help,

Adam