discourse/app/controllers/users/omniauth_callbacks_controll...

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# -*- encoding : utf-8 -*-
require_dependency 'email'
require_dependency 'enum'
require_dependency 'user_name_suggester'
class Users::OmniauthCallbacksController < ApplicationController
BUILTIN_AUTH = [
Auth::FacebookAuthenticator.new,
Auth::GoogleOAuth2Authenticator.new,
Auth::OpenIdAuthenticator.new("yahoo", "https://me.yahoo.com", trusted: true),
Auth::GithubAuthenticator.new,
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Auth::TwitterAuthenticator.new,
Auth::InstagramAuthenticator.new
]
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skip_before_filter :redirect_to_login_if_required
layout false
def self.types
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@types ||= Enum.new(:facebook, :instagram, :twitter, :google, :yahoo, :github, :persona, :cas)
end
# need to be able to call this
skip_before_filter :check_xhr
# this is the only spot where we allow CSRF, our openid / oauth redirect
# will not have a CSRF token, however the payload is all validated so its safe
skip_before_filter :verify_authenticity_token, only: :complete
def complete
auth = request.env["omniauth.auth"]
raise Discourse::NotFound unless request.env["omniauth.auth"]
auth[:session] = session
authenticator = self.class.find_authenticator(params[:provider])
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provider = Discourse.auth_providers && Discourse.auth_providers.find { |p| p.name == params[:provider] }
@auth_result = authenticator.after_authenticate(auth)
origin = request.env['omniauth.origin']
if cookies[:destination_url].present?
origin = cookies[:destination_url]
cookies.delete(:destination_url)
end
if origin.present?
parsed = URI.parse(origin) rescue nil
if parsed
@origin = "#{parsed.path}?#{parsed.query}"
end
end
unless @origin.present?
@origin = Discourse.base_uri("/")
end
if @auth_result.failed?
flash[:error] = @auth_result.failed_reason.html_safe
return render('failure')
else
@auth_result.authenticator_name = authenticator.name
complete_response_data
if (provider && provider.full_screen_login) || cookies['fsl']
cookies.delete('fsl')
cookies['_bypass_cache'] = true
flash[:authentication_data] = @auth_result.to_client_hash.to_json
redirect_to @origin
else
respond_to do |format|
format.html
format.json { render json: @auth_result.to_client_hash }
end
end
end
end
def failure
flash[:error] = I18n.t("login.omniauth_error")
render layout: 'no_ember'
end
def self.find_authenticator(name)
BUILTIN_AUTH.each do |authenticator|
if authenticator.name == name
raise Discourse::InvalidAccess.new("provider is not enabled") unless SiteSetting.send("enable_#{name}_logins?")
return authenticator
end
end
Discourse.auth_providers.each do |provider|
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return provider.authenticator if provider.name == name
end
raise Discourse::InvalidAccess.new("provider is not found")
end
protected
def complete_response_data
if @auth_result.user
user_found(@auth_result.user)
elsif SiteSetting.invite_only?
@auth_result.requires_invite = true
else
session[:authentication] = @auth_result.session_data
end
end
def user_found(user)
# automatically activate/unstage any account if a provider marked the email valid
if @auth_result.email_valid && @auth_result.email == user.email
user.update!(staged: false)
# ensure there is an active email token
user.email_tokens.create(email: user.email) unless user.email_tokens.active.exists?
user.activate
end
if ScreenedIpAddress.should_block?(request.remote_ip)
@auth_result.not_allowed_from_ip_address = true
elsif ScreenedIpAddress.block_admin_login?(user, request.remote_ip)
@auth_result.admin_not_allowed_from_ip_address = true
elsif Guardian.new(user).can_access_forum? && user.active # log on any account that is active with forum access
log_on_user(user)
Invite.invalidate_for_email(user.email) # invite link can't be used to log in anymore
session[:authentication] = nil # don't carry around old auth info, perhaps move elsewhere
@auth_result.authenticated = true
else
if SiteSetting.must_approve_users? && !user.approved?
@auth_result.awaiting_approval = true
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else
@auth_result.awaiting_activation = true
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end
end
end
end