Add OMNIAUTH_ONLY environment variable to enforce externa log-in (#17288)

* Remove support for OAUTH_REDIRECT_AT_SIGN_IN

Fixes #15959

Introduced in #6540, OAUTH_REDIRECT_AT_SIGN_IN allowed skipping the log-in form
to instead redirect to the external OmniAuth login provider.

However, it did not prevent the log-in form on /about introduced by #10232 from
appearing, and completely broke with the introduction of #15228.

As I restoring that previous log-in flow without introducing a security
vulnerability may require extensive care and knowledge of how OmniAuth works,
this commit removes support for OAUTH_REDIRECT_AT_SIGN_IN instead for the time
being.

* Add OMNIAUTH_ONLY environment variable to enforce external log-in only

* Disable user registration when OMNIAUTH_ONLY is set to true

* Replace log-in links When OMNIAUTH_ONLY is set with exactly one OmniAuth provider
This commit is contained in:
Claire 2022-01-23 15:52:58 +01:00 committed by GitHub
parent cfa583fa71
commit bddd9ba36d
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9 changed files with 71 additions and 28 deletions

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@ -83,10 +83,14 @@ class Api::V1::AccountsController < Api::BaseController
end end
def check_enabled_registrations def check_enabled_registrations
forbidden if single_user_mode? || !allowed_registrations? forbidden if single_user_mode? || omniauth_only? || !allowed_registrations?
end end
def allowed_registrations? def allowed_registrations?
Setting.registrations_mode != 'none' Setting.registrations_mode != 'none'
end end
def omniauth_only?
ENV['OMNIAUTH_ONLY'] == 'true'
end
end end

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@ -81,13 +81,17 @@ class Auth::RegistrationsController < Devise::RegistrationsController
end end
def check_enabled_registrations def check_enabled_registrations
redirect_to root_path if single_user_mode? || !allowed_registrations? redirect_to root_path if single_user_mode? || omniauth_only? || !allowed_registrations?
end end
def allowed_registrations? def allowed_registrations?
Setting.registrations_mode != 'none' || @invite&.valid_for_use? Setting.registrations_mode != 'none' || @invite&.valid_for_use?
end end
def omniauth_only?
ENV['OMNIAUTH_ONLY'] == 'true'
end
def invite_code def invite_code
if params[:user] if params[:user]
params[:user][:invite_code] params[:user][:invite_code]

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@ -50,13 +50,37 @@ module ApplicationHelper
end end
def available_sign_up_path def available_sign_up_path
if closed_registrations? if closed_registrations? || omniauth_only?
'https://joinmastodon.org/#getting-started' 'https://joinmastodon.org/#getting-started'
else else
new_user_registration_path new_user_registration_path
end end
end end
def omniauth_only?
ENV['OMNIAUTH_ONLY'] == 'true'
end
def link_to_login(name = nil, html_options = nil, &block)
target = new_user_session_path
if omniauth_only? && Devise.mappings[:user].omniauthable? && User.omniauth_providers.size == 1
target = omniauth_authorize_path(:user, User.omniauth_providers[0])
html_options ||= {}
html_options[:method] = :post
end
if block_given?
link_to(target, html_options, &block)
else
link_to(name, target, html_options)
end
end
def provider_sign_in_link(provider)
link_to I18n.t("auth.providers.#{provider}", default: provider.to_s.chomp('_oauth2').capitalize), omniauth_authorize_path(:user, provider), class: "button button-#{provider}", method: :post
end
def open_deletion? def open_deletion?
Setting.open_deletion Setting.open_deletion
end end

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@ -1,13 +1,22 @@
= simple_form_for(new_user, url: user_session_path, namespace: 'login') do |f| - unless omniauth_only?
.fields-group = simple_form_for(new_user, url: user_session_path, namespace: 'login') do |f|
- if use_seamless_external_login? .fields-group
= f.input :email, placeholder: t('simple_form.labels.defaults.username_or_email'), input_html: { 'aria-label' => t('simple_form.labels.defaults.username_or_email') }, hint: false - if use_seamless_external_login?
- else = f.input :email, placeholder: t('simple_form.labels.defaults.username_or_email'), input_html: { 'aria-label' => t('simple_form.labels.defaults.username_or_email') }, hint: false
= f.input :email, placeholder: t('simple_form.labels.defaults.email'), input_html: { 'aria-label' => t('simple_form.labels.defaults.email') }, hint: false - else
= f.input :email, placeholder: t('simple_form.labels.defaults.email'), input_html: { 'aria-label' => t('simple_form.labels.defaults.email') }, hint: false
= f.input :password, placeholder: t('simple_form.labels.defaults.password'), input_html: { 'aria-label' => t('simple_form.labels.defaults.password') }, hint: false = f.input :password, placeholder: t('simple_form.labels.defaults.password'), input_html: { 'aria-label' => t('simple_form.labels.defaults.password') }, hint: false
.actions .actions
= f.button :button, t('auth.login'), type: :submit, class: 'button button-primary' = f.button :button, t('auth.login'), type: :submit, class: 'button button-primary'
%p.hint.subtle-hint= link_to t('auth.trouble_logging_in'), new_user_password_path %p.hint.subtle-hint= link_to t('auth.trouble_logging_in'), new_user_password_path
- if Devise.mappings[:user].omniauthable? and User.omniauth_providers.any?
.simple_form.alternative-login
%h4= omniauth_only? ? t('auth.log_in_with') : t('auth.or_log_in_with')
.actions
- User.omniauth_providers.each do |provider|
= provider_sign_in_link(provider)

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@ -4,24 +4,25 @@
- content_for :header_tags do - content_for :header_tags do
= render partial: 'shared/og' = render partial: 'shared/og'
= simple_form_for(resource, as: resource_name, url: session_path(resource_name)) do |f| - unless omniauth_only?
.fields-group = simple_form_for(resource, as: resource_name, url: session_path(resource_name)) do |f|
- if use_seamless_external_login? .fields-group
= f.input :email, autofocus: true, wrapper: :with_label, label: t('simple_form.labels.defaults.username_or_email'), input_html: { 'aria-label' => t('simple_form.labels.defaults.username_or_email') }, hint: false - if use_seamless_external_login?
- else = f.input :email, autofocus: true, wrapper: :with_label, label: t('simple_form.labels.defaults.username_or_email'), input_html: { 'aria-label' => t('simple_form.labels.defaults.username_or_email') }, hint: false
= f.input :email, autofocus: true, wrapper: :with_label, label: t('simple_form.labels.defaults.email'), input_html: { 'aria-label' => t('simple_form.labels.defaults.email') }, hint: false - else
.fields-group = f.input :email, autofocus: true, wrapper: :with_label, label: t('simple_form.labels.defaults.email'), input_html: { 'aria-label' => t('simple_form.labels.defaults.email') }, hint: false
= f.input :password, wrapper: :with_label, label: t('simple_form.labels.defaults.password'), input_html: { 'aria-label' => t('simple_form.labels.defaults.password'), :autocomplete => 'off' }, hint: false .fields-group
= f.input :password, wrapper: :with_label, label: t('simple_form.labels.defaults.password'), input_html: { 'aria-label' => t('simple_form.labels.defaults.password'), :autocomplete => 'off' }, hint: false
.actions .actions
= f.button :button, t('auth.login'), type: :submit = f.button :button, t('auth.login'), type: :submit
- if devise_mapping.omniauthable? and resource_class.omniauth_providers.any? - if devise_mapping.omniauthable? and resource_class.omniauth_providers.any?
.simple_form.alternative-login .simple_form.alternative-login
%h4= t('auth.or_log_in_with') %h4= omniauth_only? ? t('auth.log_in_with') : t('auth.or_log_in_with')
.actions .actions
- resource_class.omniauth_providers.each do |provider| - resource_class.omniauth_providers.each do |provider|
= link_to t("auth.providers.#{provider}", default: provider.to_s.chomp("_oauth2").capitalize), omniauth_authorize_path(resource_name, provider), class: "button button-#{provider}", method: :post = provider_sign_in_link(provider)
.form-footer= render 'auth/shared/links' .form-footer= render 'auth/shared/links'

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@ -3,7 +3,7 @@
%li= link_to t('settings.account_settings'), edit_user_registration_path %li= link_to t('settings.account_settings'), edit_user_registration_path
- else - else
- if controller_name != 'sessions' - if controller_name != 'sessions'
%li= link_to t('auth.login'), new_user_session_path %li= link_to_login t('auth.login')
- if controller_name != 'registrations' - if controller_name != 'registrations'
%li= link_to t('auth.register'), available_sign_up_path %li= link_to t('auth.register'), available_sign_up_path

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@ -22,7 +22,7 @@
- if user_signed_in? - if user_signed_in?
= link_to t('settings.back'), root_url, class: 'nav-link nav-button webapp-btn' = link_to t('settings.back'), root_url, class: 'nav-link nav-button webapp-btn'
- else - else
= link_to t('auth.login'), new_user_session_path, class: 'webapp-btn nav-link nav-button' = link_to_login t('auth.login'), class: 'webapp-btn nav-link nav-button'
= link_to t('auth.register'), available_sign_up_path, class: 'webapp-btn nav-link nav-button' = link_to t('auth.register'), available_sign_up_path, class: 'webapp-btn nav-link nav-button'
.container= yield .container= yield

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@ -56,6 +56,6 @@
- if include_threads && !embedded_view? && !user_signed_in? - if include_threads && !embedded_view? && !user_signed_in?
.entry{ class: entry_classes } .entry{ class: entry_classes }
= link_to new_user_session_path, class: 'load-more load-gap' do = link_to_login class: 'load-more load-gap' do
= fa_icon 'comments' = fa_icon 'comments'
= t('statuses.sign_in_to_participate') = t('statuses.sign_in_to_participate')

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@ -844,6 +844,7 @@ en:
invalid_reset_password_token: Password reset token is invalid or expired. Please request a new one. invalid_reset_password_token: Password reset token is invalid or expired. Please request a new one.
link_to_otp: Enter a two-factor code from your phone or a recovery code link_to_otp: Enter a two-factor code from your phone or a recovery code
link_to_webauth: Use your security key device link_to_webauth: Use your security key device
log_in_with: Log in with
login: Log in login: Log in
logout: Logout logout: Logout
migrate_account: Move to a different account migrate_account: Move to a different account