hometown/lib/mastodon/email_domain_blocks_cli.rb

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# frozen_string_literal: true
require 'concurrent'
require_relative '../../config/boot'
require_relative '../../config/environment'
require_relative 'cli_helper'
module Mastodon
class EmailDomainBlocksCLI < Thor
include CLIHelper
def self.exit_on_failure?
true
end
desc 'list', 'list E-mail domain blocks'
long_desc <<-LONG_DESC
list up all E-mail domain blocks.
LONG_DESC
def list
EmailDomainBlock.where(parent_id: nil).order(id: 'DESC').find_each do |entry|
say(entry.domain.to_s, :white)
EmailDomainBlock.where(parent_id: entry.id).order(id: 'DESC').find_each do |child|
say(" #{child.domain}", :cyan)
end
end
end
option :with_dns_records, type: :boolean
desc 'add [DOMAIN...]', 'add E-mail domain blocks'
long_desc <<-LONG_DESC
add E-mail domain blocks from a given DOMAIN.
When the --with-dns-records option is given, An attempt to resolve the
given domain's DNS records will be made and the results will also be
blacklisted.
LONG_DESC
def add(*domains)
if domains.empty?
say('No domain(s) given', :red)
exit(1)
end
skipped = 0
processed = 0
domains.each do |domain|
if EmailDomainBlock.where(domain: domain).exists?
say("#{domain} is already blocked.", :yellow)
skipped += 1
next
end
email_domain_block = EmailDomainBlock.new(domain: domain, with_dns_records: options[:with_dns_records] || false)
email_domain_block.save!
processed += 1
next unless email_domain_block.with_dns_records?
hostnames = []
ips = []
Resolv::DNS.open do |dns|
dns.timeouts = 1
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).uniq.each do |hostname|
another_email_domain_block = EmailDomainBlock.new(domain: hostname, parent: email_domain_block)
if EmailDomainBlock.where(domain: hostname).exists?
say("#{hostname} is already blocked.", :yellow)
skipped += 1
next
end
another_email_domain_block.save!
processed += 1
end
end
say("Added #{processed}, skipped #{skipped}", color(processed, 0))
end
desc 'remove [DOMAIN...]', 'remove E-mail domain blocks'
def remove(*domains)
if domains.empty?
say('No domain(s) given', :red)
exit(1)
end
skipped = 0
processed = 0
failed = 0
domains.each do |domain|
entry = EmailDomainBlock.find_by(domain: domain)
if entry.nil?
say("#{domain} is not yet blocked.", :yellow)
skipped += 1
next
end
children_count = EmailDomainBlock.where(parent_id: entry.id).count
result = entry.destroy
if result
processed += 1 + children_count
else
say("#{domain} was not unblocked. 'destroy' returns false.", :red)
failed += 1
end
end
say("Removed #{processed}, skipped #{skipped}, failed #{failed}", color(processed, failed))
end
private
def color(processed, failed)
if !processed.zero? && failed.zero?
:green
elsif failed.zero?
:yellow
else
:red
end
end
end
end