mirror of
https://github.com/LaCasemate/fab-manager.git
synced 2024-12-10 21:24:20 +01:00
85 lines
3.6 KiB
Ruby
85 lines
3.6 KiB
Ruby
class Users::OmniauthCallbacksController < Devise::OmniauthCallbacksController
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active_provider = AuthProvider.active
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define_method active_provider.strategy_name do
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if request.env['omniauth.params'].blank?
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@user = User.from_omniauth(request.env['omniauth.auth'])
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# Here we create the new user or update the existing one with values retrieved from the SSO.
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if @user.id.nil? # => new user (ie. not updating existing)
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# If the username is mapped, we just check its uniqueness as it would break the postgresql
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# unique constraint otherwise. If the name is not unique, another unique is generated
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if active_provider.sso_fields.include?('user.username')
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@user.username = generate_unique_username(@user.username)
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end
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# If the email is mapped, we check its uniqueness. If the email is already in use, we mark it as duplicate with an
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# unique random string, because:
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# - if it is the same user, his email will be filled from the SSO when he merge his accounts
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# - if it is not the same user, this will prevent the raise of PG::UniqueViolation
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if active_provider.sso_fields.include?('user.email') and email_exists?(@user.email)
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old_mail = @user.email
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@user.email = "<#{old_mail}>#{Devise.friendly_token}-duplicate"
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flash[:alert] = t('omniauth.email_already_linked_to_another_account_please_input_your_authentication_code', OLD_MAIL: old_mail)
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end
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else # => update of an existing user
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if username_exists?(@user.username, @user.id)
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flash[:alert] = t('omniauth.your_username_is_already_linked_to_another_account_unable_to_update_it', USERNAME: @user.username)
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@user.username = User.find(@user.id).username
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end
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if email_exists?(@user.email, @user.id)
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flash[:alert] = t('omniauth.your_email_address_is_already_linked_to_another_account_unable_to_update_it', EMAIL: @user.email)
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@user.email = User.find(@user.id).email
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end
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end
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# We BYPASS THE VALIDATION because, in case of a new user, we want to save him anyway, we'll ask him later to complete his profile (on first login).
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# In case of an existing user, we trust the SSO validation as we want the SSO to have authority on users management and policy.
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@user.save(validate: false)
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sign_in_and_redirect @user, event: :authentication # this will throw if @user is not activated
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else
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@user = User.find_by(auth_token: request.env['omniauth.params']['auth_token'])
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# Here the user already exists in the database and request to be linked with the SSO
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# so let's update its sso attributes and log him on
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begin
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@user.link_with_omniauth_provider(request.env['omniauth.auth'])
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sign_in_and_redirect @user, event: :authentication
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rescue DuplicateIndexError
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redirect_to root_url, alert: t('omniauth.this_account_is_already_linked_to_an_user_of_the_platform', NAME: active_provider.name)
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end
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end
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end
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private
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def username_exists?(username, exclude_id = nil)
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if exclude_id.nil?
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User.where(username: username).size.positive?
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else
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User.where(username: username).where.not(id: exclude_id).size.positive?
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end
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end
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def email_exists?(email, exclude_id = nil)
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if exclude_id.nil?
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User.where(email: email).size.positive?
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else
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User.where(email: email).where.not(id: exclude_id).size.positive?
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end
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end
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def generate_unique_username(username)
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generated = username
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i = 1000
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while username_exists?(generated)
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generated = username + rand(1..i).to_s
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i += 10
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end
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generated
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end
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end
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