Fix registrations not checking MX records for email domain blocks requiring approval (#28608)

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Claire 2024-01-15 18:10:57 +01:00 committed by GitHub
parent a2f02a0775
commit e621c1c44c
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3 changed files with 94 additions and 5 deletions

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@ -149,6 +149,10 @@ class User < ApplicationRecord
end
end
def self.skip_mx_check?
Rails.env.local?
end
def role
if role_id.nil?
UserRole.everyone
@ -436,9 +440,24 @@ class User < ApplicationRecord
end
def sign_up_email_requires_approval?
return false unless email.present? || unconfirmed_email.present?
return false if email.blank?
EmailDomainBlock.requires_approval?(email.presence || unconfirmed_email, attempt_ip: sign_up_ip)
_, domain = email.split('@', 2)
return false if domain.blank?
records = []
# Doing this conditionally is not very satisfying, but this is consistent
# with the MX records validations we do and keeps the specs tractable.
unless self.class.skip_mx_check?
Resolv::DNS.open do |dns|
dns.timeouts = 5
records = dns.getresources(domain, Resolv::DNS::Resource::IN::MX).to_a.map { |e| e.exchange.to_s }.compact_blank
end
end
EmailDomainBlock.requires_approval?(records + [domain], attempt_ip: sign_up_ip)
end
def open_registrations?
@ -489,7 +508,7 @@ class User < ApplicationRecord
end
def validate_email_dns?
email_changed? && !external? && !Rails.env.local?
email_changed? && !external? && !self.class.skip_mx_check?
end
def validate_role_elevation

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@ -137,12 +137,49 @@ RSpec.describe Auth::RegistrationsController do
context 'when user has an email address requiring approval' do
subject do
Setting.registrations_mode = 'open'
Fabricate(:email_domain_block, allow_with_approval: true, domain: 'example.com')
request.headers['Accept-Language'] = accept_language
post :create, params: { user: { account_attributes: { username: 'test' }, email: 'test@example.com', password: '12345678', password_confirmation: '12345678', agreement: 'true' } }
end
before do
Setting.registrations_mode = 'open'
Fabricate(:email_domain_block, allow_with_approval: true, domain: 'example.com')
end
it 'creates unapproved user and redirects to setup' do
subject
expect(response).to redirect_to auth_setup_path
user = User.find_by(email: 'test@example.com')
expect(user).to_not be_nil
expect(user.locale).to eq(accept_language)
expect(user.approved).to be(false)
end
end
context 'when user has an email address requiring approval through a MX record' do
subject do
request.headers['Accept-Language'] = accept_language
post :create, params: { user: { account_attributes: { username: 'test' }, email: 'test@example.com', password: '12345678', password_confirmation: '12345678', agreement: 'true' } }
end
before do
Setting.registrations_mode = 'open'
Fabricate(:email_domain_block, allow_with_approval: true, domain: 'mail.example.com')
allow(User).to receive(:skip_mx_check?).and_return(false)
resolver = instance_double(Resolv::DNS, :timeouts= => nil)
allow(resolver).to receive(:getresources)
.with('example.com', Resolv::DNS::Resource::IN::MX)
.and_return([instance_double(Resolv::DNS::Resource::MX, exchange: 'mail.example.com')])
allow(resolver).to receive(:getresources).with('example.com', Resolv::DNS::Resource::IN::A).and_return([])
allow(resolver).to receive(:getresources).with('example.com', Resolv::DNS::Resource::IN::AAAA).and_return([])
allow(resolver).to receive(:getresources).with('mail.example.com', Resolv::DNS::Resource::IN::A).and_return([instance_double(Resolv::DNS::Resource::IN::A, address: '2.3.4.5')])
allow(resolver).to receive(:getresources).with('mail.example.com', Resolv::DNS::Resource::IN::AAAA).and_return([instance_double(Resolv::DNS::Resource::IN::AAAA, address: 'fd00::2')])
allow(Resolv::DNS).to receive(:open).and_yield(resolver)
end
it 'creates unapproved user and redirects to setup' do
subject
expect(response).to redirect_to auth_setup_path

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@ -48,6 +48,39 @@ RSpec.describe AppSignUpService, type: :service do
end
end
context 'when the email address requires approval through MX records' do
before do
Setting.registrations_mode = 'open'
Fabricate(:email_domain_block, allow_with_approval: true, domain: 'smtp.email.com')
allow(User).to receive(:skip_mx_check?).and_return(false)
resolver = instance_double(Resolv::DNS, :timeouts= => nil)
allow(resolver).to receive(:getresources)
.with('email.com', Resolv::DNS::Resource::IN::MX)
.and_return([instance_double(Resolv::DNS::Resource::MX, exchange: 'smtp.email.com')])
allow(resolver).to receive(:getresources).with('email.com', Resolv::DNS::Resource::IN::A).and_return([])
allow(resolver).to receive(:getresources).with('email.com', Resolv::DNS::Resource::IN::AAAA).and_return([])
allow(resolver).to receive(:getresources).with('smtp.email.com', Resolv::DNS::Resource::IN::A).and_return([instance_double(Resolv::DNS::Resource::IN::A, address: '2.3.4.5')])
allow(resolver).to receive(:getresources).with('smtp.email.com', Resolv::DNS::Resource::IN::AAAA).and_return([instance_double(Resolv::DNS::Resource::IN::AAAA, address: 'fd00::2')])
allow(Resolv::DNS).to receive(:open).and_yield(resolver)
end
it 'creates an unapproved user', :aggregate_failures do
access_token = subject.call(app, remote_ip, params)
expect(access_token).to_not be_nil
expect(access_token.scopes.to_s).to eq 'read write'
user = User.find_by(id: access_token.resource_owner_id)
expect(user).to_not be_nil
expect(user.confirmed?).to be false
expect(user.approved?).to be false
expect(user.account).to_not be_nil
expect(user.invite_request).to be_nil
end
end
context 'when registrations are closed' do
before do
Setting.registrations_mode = 'none'