Even if only SSO login is allowed, user is prompted to enter Hipchat email and password when login expires or client load fails

Summary

When the user's login cookie expires, the user is signed out of the client and has to sign in again.
In this case, the user will be prompted to enter their Hipchat email and password and will be unable to login if their group uses SSO.

Steps to Reproduce

1. Setup SSO and login to the Windows desktop client
2. Change the time to more than 14 days in the future, the login cookie will expire and you will be signed out

Expected Results

Get the screen where you can choose to login via SSO

Actual Results

The client prompts you to enter your Hipchat email and password, you have to click Go back to get to the SSO options screen.

Notes

Although clicking Go back resolves the issue, it can be very confusing to users who will keep on entering their SSO credentials.

Workaround

Implement a blind re-direct from /sign_in to /login_select_auth by adding this line at the very top of /hipchat-scm/web/application/views/users/sign_in.php:

<?php header("Location: login_select_auth", TRUE, 301); exit(); ?>

How to make the change persist

1. Create a new file in /home/admin/startup_scripts called sign_in_redirect or similar

   Do not include a file extension in the name

2. Copy the code below into the file and save it:

   #!/bin/bash
   
   # Check if there's a redirect already in the first line of sign_in.php
    CHECK=$(head -1 /hipchat-scm/web/application/views/users/sign_in.php | grep -c '"Location: login_select_auth", TRUE, 301')
   
   # If there are no jobs, add one
   if [ $CHECK -lt 1 ]; then
       sudo dont-blame-hipchat -c "sed -i '1s/^/<?php header(\"Location: login_select_auth\", TRUE, 301); exit(); ?>\n/' /hipchat-scm/web/application/views/users/sign_in.php";
   fi
   
   

3. Save the script, then make it executable:

   chmod +x /home/admin/startup_scripts/sign_in_redirect
   

4. Make sure the change done manually to sign_in.php is reverted and run the script once:

   /home/admin/startup_scripts/sign_in_redirect
   

5. Validate the change was done:

   head /hipchat-scm/web/application/views/users/sign_in.php
   

6. Run the script once again and verify it doesn't add an additional line there