[#817] Add email whitelist

This adds the ability to filter user signup with a whitelist
instead of or in addition to a blacklist.

Fixes #817
This commit is contained in:
Pete Keen 2017-04-04 11:04:44 -04:00
parent 5f54981846
commit e9a6da6bc7
4 changed files with 55 additions and 2 deletions

View File

@ -22,6 +22,8 @@ OTP_SECRET=
# SINGLE_USER_MODE=true
# Prevent registrations with following e-mail domains
# EMAIL_DOMAIN_BLACKLIST=example1.com|example2.de|etc
# Only allow registrations with the following e-mail domains
# EMAIL_DOMAIN_WHITELIST=example1.com|example2.de|etc
# E-mail configuration
SMTP_SERVER=smtp.mailgun.org

View File

@ -2,17 +2,30 @@
class EmailValidator < ActiveModel::EachValidator
def validate_each(record, attribute, value)
return if Rails.configuration.x.email_domains_blacklist.empty?
record.errors.add(attribute, I18n.t('users.invalid_email')) if blocked_email?(value)
end
private
def blocked_email?(value)
on_blacklist?(value) || not_on_whitelist?(value)
end
def on_blacklist?(value)
return false if Rails.configuration.x.email_domains_blacklist.blank?
domains = Rails.configuration.x.email_domains_blacklist.gsub('.', '\.')
regexp = Regexp.new("@(.+\\.)?(#{domains})", true)
value =~ regexp
end
def not_on_whitelist?(value)
return false if Rails.configuration.x.email_domains_whitelist.blank?
domains = Rails.configuration.x.email_domains_whitelist.gsub('.', '\.')
regexp = Regexp.new("@(.+\\.)?(#{domains})", true)
value !~ regexp
end
end

View File

@ -2,4 +2,5 @@
Rails.application.configure do
config.x.email_domains_blacklist = ENV.fetch('EMAIL_DOMAIN_BLACKLIST') { 'mvrht.com' }
config.x.email_domains_whitelist = ENV.fetch('EMAIL_DOMAIN_WHITELIST') { '' }
end

View File

@ -1,5 +1,42 @@
require 'rails_helper'
RSpec.describe User, type: :model do
let(:account) { Fabricate(:account, username: 'alice') }
let(:password) { 'abcd1234' }
describe 'blacklist' do
it 'should allow a non-blacklisted user to be created' do
user = User.new(email: 'foo@example.com', account: account, password: password)
expect(user.valid?).to be_truthy
end
it 'should not allow a blacklisted user to be created' do
user = User.new(email: 'foo@mvrht.com', account: account, password: password)
expect(user.valid?).to be_falsey
end
end
describe 'whitelist' do
around(:each) do |example|
old_whitelist = Rails.configuration.x.email_whitelist
Rails.configuration.x.email_domains_whitelist = 'mastodon.space'
example.run
Rails.configuration.x.email_domains_whitelist = old_whitelist
end
it 'should not allow a user to be created unless they are whitelisted' do
user = User.new(email: 'foo@example.com', account: account, password: password)
expect(user.valid?).to be_falsey
end
it 'should allow a user to be created if they are whitelisted' do
user = User.new(email: 'foo@mastodon.space', account: account, password: password)
expect(user.valid?).to be_truthy
end
end
end