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Change e-mail domain blocks to block IPs dynamically (#17635)

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* Change e-mail domain blocks to block IPs dynamically

* Update app/workers/scheduler/email_domain_block_refresh_scheduler.rb

Co-authored-by: Yamagishi Kazutoshi <ykzts@desire.sh>

* Update app/workers/scheduler/email_domain_block_refresh_scheduler.rb

Co-authored-by: Yamagishi Kazutoshi <ykzts@desire.sh>

Co-authored-by: Yamagishi Kazutoshi <ykzts@desire.sh>
This commit is contained in:
Eugen Rochko
2022-02-24 17:28:23 +01:00
committed by GitHub
parent 91cc8d1e63
commit a29a982eaa
20 changed files with 322 additions and 157 deletions
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72
app/controllers/admin/email_domain_blocks_controller.rb
View File

@@ -6,7 +6,20 @@ module Admin
def index
authorize :email_domain_block, :index?
@email_domain_blocks = EmailDomainBlock.where(parent_id: nil).includes(:children).order(id: :desc).page(params[:page])
@form = Form::EmailDomainBlockBatch.new
end
def batch
@form = Form::EmailDomainBlockBatch.new(form_email_domain_block_batch_params.merge(current_account: current_account, action: action_from_button))
@form.save
rescue ActionController::ParameterMissing
flash[:alert] = I18n.t('admin.email_domain_blocks.no_email_domain_block_selected')
rescue Mastodon::NotPermittedError
flash[:alert] = I18n.t('admin.custom_emojis.not_permitted')
ensure
redirect_to admin_email_domain_blocks_path
end
def new
@@ -19,41 +32,25 @@ module Admin
@email_domain_block = EmailDomainBlock.new(resource_params)
if @email_domain_block.save
log_action :create, @email_domain_block
if action_from_button == 'save'
EmailDomainBlock.transaction do
@email_domain_block.save!
log_action :create, @email_domain_block
if @email_domain_block.with_dns_records?
hostnames = []
ips = []
Resolv::DNS.open do |dns|
dns.timeouts = 5
hostnames = dns.getresources(@email_domain_block.domain, Resolv::DNS::Resource::IN::MX).to_a.map { |e| e.exchange.to_s }
([@email_domain_block.domain] + hostnames).uniq.each do |hostname|
ips.concat(dns.getresources(hostname, Resolv::DNS::Resource::IN::A).to_a.map { |e| e.address.to_s })
ips.concat(dns.getresources(hostname, Resolv::DNS::Resource::IN::AAAA).to_a.map { |e| e.address.to_s })
end
end
(hostnames + ips).each do |hostname|
another_email_domain_block = EmailDomainBlock.new(domain: hostname, parent: @email_domain_block)
log_action :create, another_email_domain_block if another_email_domain_block.save
(@email_domain_block.other_domains || []).uniq.each do |domain|
other_email_domain_block = EmailDomainBlock.create!(domain: domain, parent: @email_domain_block)
log_action :create, other_email_domain_block
end
end
redirect_to admin_email_domain_blocks_path, notice: I18n.t('admin.email_domain_blocks.created_msg')
else
set_resolved_records
render :new
end
end
def destroy
authorize @email_domain_block, :destroy?
@email_domain_block.destroy!
log_action :destroy, @email_domain_block
redirect_to admin_email_domain_blocks_path, notice: I18n.t('admin.email_domain_blocks.destroyed_msg')
rescue ActiveRecord::RecordInvalid
set_resolved_records
render :new
end
private
@@ -62,8 +59,27 @@ module Admin
@email_domain_block = EmailDomainBlock.find(params[:id])
end
def set_resolved_records
Resolv::DNS.open do |dns|
dns.timeouts = 5
@resolved_records = dns.getresources(@email_domain_block.domain, Resolv::DNS::Resource::IN::MX).to_a
end
end
def resource_params
params.require(:email_domain_block).permit(:domain, :with_dns_records)
params.require(:email_domain_block).permit(:domain, other_domains: [])
end
def form_email_domain_block_batch_params
params.require(:form_email_domain_block_batch).permit(email_domain_block_ids: [])
end
def action_from_button
if params[:delete]
'delete'
elsif params[:save]
'save'
end
end
end
end

59
app/models/email_domain_block.rb
View File

@@ -3,11 +3,13 @@
#
# Table name: email_domain_blocks
#
# id :bigint(8) not null, primary key
# domain :string default(""), not null
# created_at :datetime not null
# updated_at :datetime not null
# parent_id :bigint(8)
# id :bigint(8) not null, primary key
# domain :string default(""), not null
# created_at :datetime not null
# updated_at :datetime not null
# parent_id :bigint(8)
# ips :inet is an Array
# last_refresh_at :datetime
#
class EmailDomainBlock < ApplicationRecord
@@ -18,27 +20,42 @@ class EmailDomainBlock < ApplicationRecord
validates :domain, presence: true, uniqueness: true, domain: true
def with_dns_records=(val)
@with_dns_records = ActiveModel::Type::Boolean.new.cast(val)
# Used for adding multiple blocks at once
attr_accessor :other_domains
def history
@history ||= Trends::History.new('email_domain_blocks', id)
end
def with_dns_records?
@with_dns_records
end
def self.block?(domain_or_domains, ips: [], attempt_ip: nil)
domains = Array(domain_or_domains).map do |str|
domain = begin
if str.include?('@')
str.split('@', 2).last
else
str
end
end
alias with_dns_records with_dns_records?
def self.block?(email)
_, domain = email.split('@', 2)
return true if domain.nil?
begin
domain = TagManager.instance.normalize_domain(domain)
TagManager.instance.normalize_domain(domain) if domain.present?
rescue Addressable::URI::InvalidURIError
return true
nil
end
where(domain: domain).exists?
# If some of the inputs passed in are invalid, we definitely want to
# block the attempt, but we also want to register hits against any
# other valid matches
blocked = domains.any?(&:nil?)
scope = where(domain: domains)
scope = scope.or(where('ips && ARRAY[?]::inet[]', ips)) if ips.any?
scope.find_each do |block|
blocked = true
block.history.add(attempt_ip) if attempt_ip.present?
end
blocked
end
end

30
app/models/form/email_domain_block_batch.rb Normal file
View File

@@ -0,0 +1,30 @@
# frozen_string_literal: true
class Form::EmailDomainBlockBatch
include ActiveModel::Model
include Authorization
include AccountableConcern
attr_accessor :email_domain_block_ids, :action, :current_account
def save
case action
when 'delete'
delete!
end
end
private
def email_domain_blocks
@email_domain_blocks ||= EmailDomainBlock.where(id: email_domain_block_ids)
end
def delete!
email_domain_blocks.each do |email_domain_block|
authorize(email_domain_block, :destroy?)
email_domain_block.destroy!
log_action :destroy, email_domain_block
end
end
end

1
app/models/status.rb
View File

@@ -24,6 +24,7 @@
# poll_id :bigint(8)
# deleted_at :datetime
# edited_at :datetime
# trendable :boolean
#
class Status < ApplicationRecord

26
app/validators/blacklisted_email_validator.rb
View File

@@ -4,41 +4,39 @@ class BlacklistedEmailValidator < ActiveModel::Validator
def validate(user)
return if user.valid_invitation? || user.email.blank?
@email = user.email
user.errors.add(:email, :blocked) if blocked_email_provider?
user.errors.add(:email, :taken) if blocked_canonical_email?
user.errors.add(:email, :blocked) if blocked_email_provider?(user.email, user.sign_up_ip)
user.errors.add(:email, :taken) if blocked_canonical_email?(user.email)
end
private
def blocked_email_provider?
disallowed_through_email_domain_block? || disallowed_through_configuration? || not_allowed_through_configuration?
def blocked_email_provider?(email, ip)
disallowed_through_email_domain_block?(email, ip) || disallowed_through_configuration?(email) || not_allowed_through_configuration?(email)
end
def blocked_canonical_email?
CanonicalEmailBlock.block?(@email)
def blocked_canonical_email?(email)
CanonicalEmailBlock.block?(email)
end
def disallowed_through_email_domain_block?
EmailDomainBlock.block?(@email)
def disallowed_through_email_domain_block?(email, ip)
EmailDomainBlock.block?(email, attempt_ip: ip)
end
def not_allowed_through_configuration?
def not_allowed_through_configuration?(email)
return false if Rails.configuration.x.email_domains_whitelist.blank?
domains = Rails.configuration.x.email_domains_whitelist.gsub('.', '\.')
regexp = Regexp.new("@(.+\\.)?(#{domains})$", true)
@email !~ regexp
email !~ regexp
end
def disallowed_through_configuration?
def disallowed_through_configuration?(email)
return false if Rails.configuration.x.email_domains_blacklist.blank?
domains = Rails.configuration.x.email_domains_blacklist.gsub('.', '\.')
regexp = Regexp.new("@(.+\\.)?(#{domains})", true)
regexp.match?(@email)
regexp.match?(email)
end
end

20
app/validators/email_mx_validator.rb
View File

@@ -11,11 +11,11 @@ class EmailMxValidator < ActiveModel::Validator
if domain.blank?
user.errors.add(:email, :invalid)
elsif !on_allowlist?(domain)
ips, hostnames = resolve_mx(domain)
resolved_ips, resolved_domains = resolve_mx(domain)
if ips.empty?
if resolved_ips.empty?
user.errors.add(:email, :unreachable)
elsif on_blacklist?(hostnames + ips)
elsif on_blacklist?(resolved_domains, resolved_ips, user.sign_up_ip)
user.errors.add(:email, :blocked)
end
end
@@ -40,24 +40,24 @@ class EmailMxValidator < ActiveModel::Validator
end
def resolve_mx(domain)
hostnames = []
ips = []
records = []
ips = []
Resolv::DNS.open do |dns|
dns.timeouts = 5
hostnames = dns.getresources(domain, Resolv::DNS::Resource::IN::MX).to_a.map { |e| e.exchange.to_s }
records = dns.getresources(domain, Resolv::DNS::Resource::IN::MX).to_a.map { |e| e.exchange.to_s }
([domain] + hostnames).uniq.each do |hostname|
([domain] + records).uniq.each do |hostname|
ips.concat(dns.getresources(hostname, Resolv::DNS::Resource::IN::A).to_a.map { |e| e.address.to_s })
ips.concat(dns.getresources(hostname, Resolv::DNS::Resource::IN::AAAA).to_a.map { |e| e.address.to_s })
end
end
[ips, hostnames]
[ips, records]
end
def on_blacklist?(values)
EmailDomainBlock.where(domain: values.uniq).any?
def on_blacklist?(domains, resolved_ips, attempt_ip)
EmailDomainBlock.block?(domains, ips: resolved_ips, attempt_ip: attempt_ip)
end
end

27
app/views/admin/email_domain_blocks/_email_domain_block.html.haml
View File

@@ -1,15 +1,14 @@
%tr
%td
%samp= email_domain_block.domain
%td
= table_link_to 'trash', t('admin.email_domain_blocks.delete'), admin_email_domain_block_path(email_domain_block), method: :delete
.batch-table__row
%label.batch-table__row__select.batch-table__row__select--aligned.batch-checkbox
= f.check_box :email_domain_block_ids, { multiple: true, include_hidden: false }, email_domain_block.id
.batch-table__row__content.pending-account
.pending-account__header
%samp= link_to email_domain_block.domain, admin_accounts_path(email: "%@#{email_domain_block.domain}")
- email_domain_block.children.each do |child_email_domain_block|
%tr
%td
%samp= child_email_domain_block.domain
%span.muted-hint
= surround '(', ')' do
= t('admin.email_domain_blocks.from_html', domain: content_tag(:samp, email_domain_block.domain))
%td
= table_link_to 'trash', t('admin.email_domain_blocks.delete'), admin_email_domain_block_path(child_email_domain_block), method: :delete
%br/
- if email_domain_block.parent.present?
= t('admin.email_domain_blocks.resolved_through_html', domain: content_tag(:samp, email_domain_block.parent.domain))
•
= t('admin.email_domain_blocks.attempts_over_week', count: email_domain_block.history.reduce(0) { |sum, day| sum + day.accounts })

28
app/views/admin/email_domain_blocks/index.html.haml
View File

@@ -4,16 +4,22 @@
- content_for :heading_actions do
= link_to t('admin.email_domain_blocks.add_new'), new_admin_email_domain_block_path, class: 'button'
- if @email_domain_blocks.empty?
%div.muted-hint.center-text=t 'admin.email_domain_blocks.empty'
- else
.table-wrapper
%table.table
%thead
%tr
%th= t('admin.email_domain_blocks.domain')
%th
%tbody
= render partial: 'email_domain_block', collection: @email_domain_blocks
- content_for :header_tags do
= javascript_pack_tag 'admin', async: true, crossorigin: 'anonymous'
= form_for(@form, url: batch_admin_email_domain_blocks_path) do |f|
= hidden_field_tag :page, params[:page] || 1
.batch-table
.batch-table__toolbar
%label.batch-table__toolbar__select.batch-checkbox-all
= check_box_tag :batch_checkbox_all, nil, false
.batch-table__toolbar__actions
= f.button safe_join([fa_icon('times'), t('admin.email_domain_blocks.delete')]), name: :delete, class: 'table-action-link', type: :submit, data: { confirm: t('admin.reports.are_you_sure') }
.batch-table__body
- if @email_domain_blocks.empty?
= nothing_here 'nothing-here--under-tabs'
- else
= render partial: 'email_domain_block', collection: @email_domain_blocks.flat_map { |x| [x, x.children.to_a].flatten }, locals: { f: f }
= paginate @email_domain_blocks

32
app/views/admin/email_domain_blocks/new.html.haml
View File

@@ -1,14 +1,38 @@
- content_for :page_title do
= t('.title')
- content_for :header_tags do
= javascript_pack_tag 'admin', async: true, crossorigin: 'anonymous'
= simple_form_for @email_domain_block, url: admin_email_domain_blocks_path do |f|
= render 'shared/error_messages', object: @email_domain_block
.fields-group
= f.input :domain, wrapper: :with_block_label, label: t('admin.email_domain_blocks.domain')
= f.input :domain, wrapper: :with_block_label, label: t('admin.email_domain_blocks.domain'), input_html: { readonly: defined?(@resolved_records) }
.fields-group
= f.input :with_dns_records, as: :boolean, wrapper: :with_label
- if defined?(@resolved_records)
%p.hint= t('admin.email_domain_blocks.resolved_dns_records_hint_html')
.batch-table
.batch-table__toolbar
%label.batch-table__toolbar__select.batch-checkbox-all
= check_box_tag :batch_checkbox_all, nil, false
.batch-table__toolbar__actions
.batch-table__body
- @resolved_records.each do |record|
.batch-table__row
%label.batch-table__row__select.batch-table__row__select--aligned.batch-checkbox
= f.input_field :other_domains, as: :boolean, checked_value: record.exchange.to_s, include_hidden: false, multiple: true
.batch-table__row__content.pending-account
.pending-account__header
%samp= record.exchange.to_s
%br
= t('admin.email_domain_blocks.dns.types.mx')
%hr.spacer/
.actions
= f.button :button, t('.create'), type: :submit
- if defined?(@resolved_records)
= f.button :button, t('.create'), type: :submit, name: :save
- else
= f.button :button, t('.resolve'), type: :submit, name: :resolve

30
app/workers/scheduler/email_domain_block_refresh_scheduler.rb Normal file
View File

@@ -0,0 +1,30 @@
# frozen_string_literal: true
class Scheduler::EmailDomainBlockRefreshScheduler
include Sidekiq::Worker
include Redisable
sidekiq_options retry: 0
def perform
Resolv::DNS.open do |dns|
dns.timeouts = 5
EmailDomainBlock.find_each do |email_domain_block|
ips = begin
if ip?(email_domain_block.domain)
[email_domain_block.domain]
else
dns.getresources(email_domain_block.domain, Resolv::DNS::Resource::IN::A).to_a + dns.getresources(email_domain_block.domain, Resolv::DNS::Resource::IN::AAAA).to_a.map { |resource| resource.address.to_s }
end
end
email_domain_block.update(ips: ips, last_refresh_at: Time.now.utc)
end
end
end
def ip?(str)
str =~ Regexp.union([Resolv::IPv4::Regex, Resolv::IPv6::Regex])
end
end

13
config/locales/en.yml
View File

@@ -467,15 +467,22 @@ en:
view: View domain block
email_domain_blocks:
add_new: Add new
attempts_over_week:
one: "%{count} attempt over the last week"
other: "%{count} sign-up attempts over the last week"
created_msg: Successfully blocked e-mail domain
delete: Delete
destroyed_msg: Successfully unblocked e-mail domain
dns:
types:
mx: MX record
domain: Domain
empty: No e-mail domains currently blocked.
from_html: from %{domain}
new:
create: Add domain
resolve: Resolve domain
title: Block new e-mail domain
no_email_domain_block_selected: No e-mail domain blocks were changed as none were selected
resolved_dns_records_hint_html: The domain name resolves to the following MX domains, which are ultimately responsible for accepting e-mail. Blocking an MX domain will block sign-ups from any e-mail address which uses the same MX domain, even if the visible domain name is different. <strong>Be careful not to block major e-mail providers.</strong>
resolved_through_html: Resolved through %{domain}
title: Blocked e-mail domains
follow_recommendations:
description_html: "<strong>Follow recommendations help new users quickly find interesting content</strong>. When a user has not interacted with others enough to form personalized follow recommendations, these accounts are recommended instead. They are re-calculated on a daily basis from a mix of accounts with the highest recent engagements and highest local follower counts for a given language."

2
config/locales/simple_form.en.yml
View File

@@ -64,7 +64,7 @@ en:
domain_allow:
domain: This domain will be able to fetch data from this server and incoming data from it will be processed and stored
email_domain_block:
domain: This can be the domain name that shows up in the e-mail address, the MX record that domain resolves to, or IP of the server that MX record resolves to. Those will be checked upon user sign-up and the sign-up will be rejected.
domain: This can be the domain name that shows up in the e-mail address or the MX record it uses. They will be checked upon sign-up.
with_dns_records: An attempt to resolve the given domain's DNS records will be made and the results will also be blocked
featured_tag:
name: 'You might want to use one of these:'

7
config/routes.rb
View File

@@ -193,7 +193,12 @@ Rails.application.routes.draw do
resources :domain_allows, only: [:new, :create, :show, :destroy]
resources :domain_blocks, only: [:new, :create, :show, :destroy, :update, :edit]
resources :email_domain_blocks, only: [:index, :new, :create, :destroy]
resources :email_domain_blocks, only: [:index, :new, :create] do
collection do
post :batch
end
end
resources :action_logs, only: [:index]
resources :warning_presets, except: [:new]

4
config/sidekiq.yml
View File

@@ -17,6 +17,10 @@
every: '5m'
class: Scheduler::Trends::RefreshScheduler
queue: scheduler
email_domain_block_refresh_scheduler:
every: '1h'
class: Scheduler::EmailDomainBlockRefreshScheduler
queue: scheduler
trends_review_notifications_scheduler:
every: '2h'
class: Scheduler::Trends::ReviewNotificationsScheduler

6
db/migrate/20220224010024_add_ips_to_email_domain_blocks.rb Normal file
View File

@@ -0,0 +1,6 @@
class AddIpsToEmailDomainBlocks < ActiveRecord::Migration[6.1]
def change
add_column :email_domain_blocks, :ips, :inet, array: true
add_column :email_domain_blocks, :last_refresh_at, :datetime
end
end

5
db/schema.rb
View File

@@ -10,7 +10,7 @@
#
# It's strongly recommended that you check this file into your version control system.
ActiveRecord::Schema.define(version: 2022_02_10_153119) do
ActiveRecord::Schema.define(version: 2022_02_24_010024) do
# These are extensions that must be enabled in order to support this database
enable_extension "plpgsql"
@@ -387,6 +387,9 @@ ActiveRecord::Schema.define(version: 2022_02_10_153119) do
t.datetime "created_at", null: false
t.datetime "updated_at", null: false
t.bigint "parent_id"
t.inet "ips", array: true
t.datetime "last_refresh_at"
t.index ["domain"], name: "index_email_domain_blocks_on_domain", unique: true
end

40
spec/controllers/admin/email_domain_blocks_controller_spec.rb
View File

@@ -17,43 +17,43 @@ RSpec.describe Admin::EmailDomainBlocksController, type: :controller do
EmailDomainBlock.paginates_per default_per_page
end
it 'renders email blacks' do
it 'returns http success' do
2.times { Fabricate(:email_domain_block) }
get :index, params: { page: 2 }
assigned = assigns(:email_domain_blocks)
expect(assigned.count).to eq 1
expect(assigned.klass).to be EmailDomainBlock
expect(response).to have_http_status(200)
end
end
describe 'GET #new' do
it 'assigns a new email black' do
it 'returns http success' do
get :new
expect(assigns(:email_domain_block)).to be_instance_of(EmailDomainBlock)
expect(response).to have_http_status(200)
end
end
describe 'POST #create' do
it 'blocks the domain when succeeded to save' do
post :create, params: { email_domain_block: { domain: 'example.com' } }
context 'when resolve button is pressed' do
before do
post :create, params: { email_domain_block: { domain: 'example.com' } }
end
expect(flash[:notice]).to eq I18n.t('admin.email_domain_blocks.created_msg')
expect(response).to redirect_to(admin_email_domain_blocks_path)
it 'renders new template' do
expect(response).to render_template(:new)
end
end
end
describe 'DELETE #destroy' do
it 'unblocks the domain' do
email_domain_block = Fabricate(:email_domain_block)
delete :destroy, params: { id: email_domain_block.id }
context 'when save button is pressed' do
before do
post :create, params: { email_domain_block: { domain: 'example.com' }, save: '' }
end
expect(flash[:notice]).to eq I18n.t('admin.email_domain_blocks.destroyed_msg')
expect(response).to redirect_to(admin_email_domain_blocks_path)
it 'blocks the domain' do
expect(EmailDomainBlock.find_by(domain: 'example.com')).to_not be_nil
end
it 'redirects to e-mail domain blocks' do
expect(response).to redirect_to(admin_email_domain_blocks_path)
end
end
end
end

27
spec/models/email_domain_block_spec.rb
View File

@@ -9,14 +9,29 @@ RSpec.describe EmailDomainBlock, type: :model do
end
describe 'block?' do
it 'returns true if the domain is registed' do
Fabricate(:email_domain_block, domain: 'example.com')
expect(EmailDomainBlock.block?('nyarn@example.com')).to eq true
let(:input) { nil }
context 'given an e-mail address' do
let(:input) { 'nyarn@example.com' }
it 'returns true if the domain is blocked' do
Fabricate(:email_domain_block, domain: 'example.com')
expect(EmailDomainBlock.block?(input)).to be true
end
it 'returns false if the domain is not blocked' do
Fabricate(:email_domain_block, domain: 'other-example.com')
expect(EmailDomainBlock.block?(input)).to be false
end
end
it 'returns true if the domain is not registed' do
Fabricate(:email_domain_block, domain: 'example.com')
expect(EmailDomainBlock.block?('nyarn@example.net')).to eq false
context 'given an array of domains' do
let(:input) { %w(foo.com mail.foo.com) }
it 'returns true if the domain is blocked' do
Fabricate(:email_domain_block, domain: 'mail.foo.com')
expect(EmailDomainBlock.block?(input)).to be true
end
end
end
end

2
spec/validators/blacklisted_email_validator_spec.rb
View File

@@ -4,7 +4,7 @@ require 'rails_helper'
RSpec.describe BlacklistedEmailValidator, type: :validator do
describe '#validate' do
let(:user) { double(email: 'info@mail.com', errors: errors) }
let(:user) { double(email: 'info@mail.com', sign_up_ip: '1.2.3.4', errors: errors) }
let(:errors) { double(add: nil) }
before do

48
spec/validators/email_mx_validator_spec.rb
View File

@@ -4,24 +4,28 @@ require 'rails_helper'
describe EmailMxValidator do
describe '#validate' do
let(:user) { double(email: 'foo@example.com', errors: double(add: nil)) }
let(:user) { double(email: 'foo@example.com', sign_up_ip: '1.2.3.4', errors: double(add: nil)) }
it 'does not add errors if there are no DNS records for an e-mail domain that is explicitly allowed' do
old_whitelist = Rails.configuration.x.email_domains_whitelist
Rails.configuration.x.email_domains_whitelist = 'example.com'
context 'for an e-mail domain that is explicitly allowed' do
around do |block|
tmp = Rails.configuration.x.email_domains_whitelist
Rails.configuration.x.email_domains_whitelist = 'example.com'
block.call
Rails.configuration.x.email_domains_whitelist = tmp
end
resolver = double
it 'does not add errors if there are no DNS records' do
resolver = double
allow(resolver).to receive(:getresources).with('example.com', Resolv::DNS::Resource::IN::MX).and_return([])
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(:timeouts=).and_return(nil)
allow(Resolv::DNS).to receive(:open).and_yield(resolver)
allow(resolver).to receive(:getresources).with('example.com', Resolv::DNS::Resource::IN::MX).and_return([])
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(:timeouts=).and_return(nil)
allow(Resolv::DNS).to receive(:open).and_yield(resolver)
subject.validate(user)
expect(user.errors).to_not have_received(:add)
Rails.configuration.x.email_domains_whitelist = old_whitelist
subject.validate(user)
expect(user.errors).to_not have_received(:add)
end
end
it 'adds an error if there are no DNS records for the e-mail domain' do
@@ -37,7 +41,7 @@ describe EmailMxValidator do
expect(user.errors).to have_received(:add)
end
it 'adds an error if a MX record exists but does not lead to an IP' do
it 'adds an error if a MX record does not lead to an IP' do
resolver = double
allow(resolver).to receive(:getresources).with('example.com', Resolv::DNS::Resource::IN::MX).and_return([double(exchange: 'mail.example.com')])
@@ -53,7 +57,7 @@ describe EmailMxValidator do
end
it 'adds an error if the A record is blacklisted' do
EmailDomainBlock.create!(domain: '1.2.3.4')
EmailDomainBlock.create!(domain: 'alternate-example.com', ips: ['1.2.3.4'])
resolver = double
allow(resolver).to receive(:getresources).with('example.com', Resolv::DNS::Resource::IN::MX).and_return([])
@@ -67,7 +71,7 @@ describe EmailMxValidator do
end
it 'adds an error if the AAAA record is blacklisted' do
EmailDomainBlock.create!(domain: 'fd00::1')
EmailDomainBlock.create!(domain: 'alternate-example.com', ips: ['fd00::1'])
resolver = double
allow(resolver).to receive(:getresources).with('example.com', Resolv::DNS::Resource::IN::MX).and_return([])
@@ -80,8 +84,8 @@ describe EmailMxValidator do
expect(user.errors).to have_received(:add)
end
it 'adds an error if the MX record is blacklisted' do
EmailDomainBlock.create!(domain: '2.3.4.5')
it 'adds an error if the A record of the MX record is blacklisted' do
EmailDomainBlock.create!(domain: 'mail.other-domain.com', ips: ['2.3.4.5'])
resolver = double
allow(resolver).to receive(:getresources).with('example.com', Resolv::DNS::Resource::IN::MX).and_return([double(exchange: 'mail.example.com')])
@@ -96,8 +100,8 @@ describe EmailMxValidator do
expect(user.errors).to have_received(:add)
end
it 'adds an error if the MX IPv6 record is blacklisted' do
EmailDomainBlock.create!(domain: 'fd00::2')
it 'adds an error if the AAAA record of the MX record is blacklisted' do
EmailDomainBlock.create!(domain: 'mail.other-domain.com', ips: ['fd00::2'])
resolver = double
allow(resolver).to receive(:getresources).with('example.com', Resolv::DNS::Resource::IN::MX).and_return([double(exchange: 'mail.example.com')])
@@ -112,7 +116,7 @@ describe EmailMxValidator do
expect(user.errors).to have_received(:add)
end
it 'adds an error if the MX hostname is blacklisted' do
it 'adds an error if the MX record is blacklisted' do
EmailDomainBlock.create!(domain: 'mail.example.com')
resolver = double