Allow users to have multiple email addresses, and verify emails
Summary:
- Move email to a separate table.
- Migrate existing email to new storage.
- Allow users to add and remove email addresses.
- Allow users to verify email addresses.
- Allow users to change their primary email address.
- Convert all the registration/reset/login code to understand these changes.
- There are a few security considerations here but I think I've addressed them. Principally, it is important to never let a user acquire a verified email address they don't actually own. We ensure this by tightening the scoping of token generation rules to be (user, email) specific.
- This should have essentially zero impact on Facebook, but may require some minor changes in the registration code -- I don't exactly remember how it is set up.
Not included here (next steps):
- Allow configuration to restrict email to certain domains.
- Allow configuration to require validated email.
Test Plan:
This is a fairly extensive, difficult-to-test change.
- From "Email Addresses" interface:
- Added new email (verified email verifications sent).
- Changed primary email (verified old/new notificactions sent).
- Resent verification emails (verified they sent).
- Removed email.
- Tried to add already-owned email.
- Created new users with "accountadmin". Edited existing users with "accountadmin".
- Created new users with "add_user.php".
- Created new users with web interface.
- Clicked welcome email link, verified it verified email.
- Reset password.
- Linked/unlinked oauth accounts.
- Logged in with oauth account.
- Logged in with email.
- Registered with Oauth account.
- Tried to register with OAuth account with duplicate email.
- Verified errors for email verification with bad tokens, etc.
Reviewers: btrahan, vrana, jungejason
Reviewed By: btrahan
CC: aran
Maniphest Tasks: T1184
Differential Revision: https://secure.phabricator.com/D2393