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138 lines
3.9 KiB
138 lines
3.9 KiB
# frozen_string_literal: true
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require 'concurrent'
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require_relative '../../config/boot'
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require_relative '../../config/environment'
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require_relative 'cli_helper'
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module Mastodon
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class EmailDomainBlocksCLI < Thor
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include CLIHelper
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def self.exit_on_failure?
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true
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end
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desc 'list', 'List blocked e-mail domains'
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def list
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EmailDomainBlock.where(parent_id: nil).order(id: 'DESC').find_each do |entry|
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say(entry.domain.to_s, :white)
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EmailDomainBlock.where(parent_id: entry.id).order(id: 'DESC').find_each do |child|
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say(" #{child.domain}", :cyan)
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end
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end
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end
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option :with_dns_records, type: :boolean
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desc 'add DOMAIN...', 'Block e-mail domain(s)'
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long_desc <<-LONG_DESC
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Blocking an e-mail domain prevents users from signing up
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with e-mail addresses from that domain. You can provide one or
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multiple domains to the command.
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When the --with-dns-records option is given, an attempt to resolve the
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given domains' DNS records will be made and the results (A, AAAA and MX) will
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also be blocked. This can be helpful if you are blocking an e-mail server that
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has many different domains pointing to it as it allows you to essentially block
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it at the root.
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LONG_DESC
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def add(*domains)
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if domains.empty?
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say('No domain(s) given', :red)
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exit(1)
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end
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skipped = 0
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processed = 0
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domains.each do |domain|
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if EmailDomainBlock.where(domain: domain).exists?
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say("#{domain} is already blocked.", :yellow)
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skipped += 1
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next
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end
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email_domain_block = EmailDomainBlock.new(domain: domain, with_dns_records: options[:with_dns_records] || false)
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email_domain_block.save!
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processed += 1
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next unless email_domain_block.with_dns_records?
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hostnames = []
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ips = []
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Resolv::DNS.open do |dns|
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dns.timeouts = 5
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hostnames = dns.getresources(email_domain_block.domain, Resolv::DNS::Resource::IN::MX).to_a.map { |e| e.exchange.to_s }
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([email_domain_block.domain] + hostnames).uniq.each do |hostname|
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ips.concat(dns.getresources(hostname, Resolv::DNS::Resource::IN::A).to_a.map { |e| e.address.to_s })
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ips.concat(dns.getresources(hostname, Resolv::DNS::Resource::IN::AAAA).to_a.map { |e| e.address.to_s })
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end
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end
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(hostnames + ips).uniq.each do |hostname|
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another_email_domain_block = EmailDomainBlock.new(domain: hostname, parent: email_domain_block)
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if EmailDomainBlock.where(domain: hostname).exists?
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say("#{hostname} is already blocked.", :yellow)
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skipped += 1
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next
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end
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another_email_domain_block.save!
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processed += 1
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end
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end
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say("Added #{processed}, skipped #{skipped}", color(processed, 0))
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end
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desc 'remove DOMAIN...', 'Remove e-mail domain blocks'
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def remove(*domains)
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if domains.empty?
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say('No domain(s) given', :red)
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exit(1)
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end
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skipped = 0
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processed = 0
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failed = 0
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domains.each do |domain|
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entry = EmailDomainBlock.find_by(domain: domain)
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if entry.nil?
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say("#{domain} is not yet blocked.", :yellow)
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skipped += 1
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next
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end
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children_count = EmailDomainBlock.where(parent_id: entry.id).count
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result = entry.destroy
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if result
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processed += children_count + 1
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else
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say("#{domain} could not be unblocked.", :red)
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failed += 1
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end
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end
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say("Removed #{processed}, skipped #{skipped}, failed #{failed}", color(processed, failed))
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end
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private
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def color(processed, failed)
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if !processed.zero? && failed.zero?
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:green
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elsif failed.zero?
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:yellow
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else
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:red
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end
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end
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end
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end
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