5bbaa3bdf0
Don't perform email domain verification if email_domain_verification_list is nil or empty.
126 lines
3.7 KiB
Ruby
126 lines
3.7 KiB
Ruby
require 'resolv'
|
|
|
|
module EmailValidator
|
|
module_function
|
|
|
|
IGNORE_DOTS = %w[gmail.com]
|
|
IGNORE_PLUS_ADDRESSING = %w[gmail.com hotmail.com outlook.com live.com]
|
|
IGNORE_MINUS_ADDRESSING = %w[yahoo.com]
|
|
CANONICAL_DOMAINS = {
|
|
"googlemail.com" => "gmail.com",
|
|
"hotmail.co.uk" => "outlook.com",
|
|
"hotmail.co.jp" => "outlook.com",
|
|
"hotmail.co.th" => "outlook.com",
|
|
"hotmail.com" => "outlook.com",
|
|
"hotmail.ca" => "outlook.com",
|
|
"hotmail.de" => "outlook.com",
|
|
"hotmail.es" => "outlook.com",
|
|
"hotmail.fr" => "outlook.com",
|
|
"hotmail.it" => "outlook.com",
|
|
"live.com.au" => "outlook.com",
|
|
"live.com.ar" => "outlook.com",
|
|
"live.com.mx" => "outlook.com",
|
|
"live.co.uk" => "outlook.com",
|
|
"live.com" => "outlook.com",
|
|
"live.ca" => "outlook.com",
|
|
"live.cl" => "outlook.com",
|
|
"live.cn" => "outlook.com",
|
|
"live.de" => "outlook.com",
|
|
"live.fr" => "outlook.com",
|
|
"live.it" => "outlook.com",
|
|
"live.jp" => "outlook.com",
|
|
"live.nl" => "outlook.com",
|
|
"live.se" => "outlook.com",
|
|
"msn.com" => "outlook.com",
|
|
"yahoo.com.au" => "yahoo.com",
|
|
"yahoo.com.ar" => "yahoo.com",
|
|
"yahoo.com.br" => "yahoo.com",
|
|
"yahoo.com.cn" => "yahoo.com",
|
|
"yahoo.com.hk" => "yahoo.com",
|
|
"yahoo.com.mx" => "yahoo.com",
|
|
"yahoo.com.ph" => "yahoo.com",
|
|
"yahoo.com.sg" => "yahoo.com",
|
|
"yahoo.com.tw" => "yahoo.com",
|
|
"yahoo.com.vn" => "yahoo.com",
|
|
"yahoo.co.id" => "yahoo.com",
|
|
"yahoo.co.kr" => "yahoo.com",
|
|
"yahoo.co.jp" => "yahoo.com",
|
|
"yahoo.co.uk" => "yahoo.com",
|
|
"yahoo.ca" => "yahoo.com",
|
|
"yahoo.cn" => "yahoo.com",
|
|
"yahoo.de" => "yahoo.com",
|
|
"yahoo.es" => "yahoo.com",
|
|
"yahoo.fr" => "yahoo.com",
|
|
"yahoo.it" => "yahoo.com",
|
|
"ymail.com" => "yahoo.com",
|
|
"126.com" => "163.com",
|
|
"aim.com" => "aol.com",
|
|
"gmx.com" => "gmx.net",
|
|
"gmx.at" => "gmx.net",
|
|
"gmx.ch" => "gmx.net",
|
|
"gmx.de" => "gmx.net",
|
|
"gmx.fr" => "gmx.net",
|
|
"gmx.us" => "gmx.net",
|
|
}
|
|
|
|
def smtp_enabled?
|
|
Rails.env.production?
|
|
end
|
|
|
|
def normalize(address)
|
|
return nil unless address.count("@") == 1
|
|
|
|
name, domain = address.downcase.split("@")
|
|
|
|
domain = CANONICAL_DOMAINS.fetch(domain, domain)
|
|
name = name.delete(".") if domain.in?(IGNORE_DOTS)
|
|
name = name.gsub(/\+.*\z/, "") if domain.in?(IGNORE_PLUS_ADDRESSING)
|
|
name = name.gsub(/-.*\z/, "") if domain.in?(IGNORE_MINUS_ADDRESSING)
|
|
|
|
"#{name}@#{domain}"
|
|
end
|
|
|
|
def nondisposable?(address)
|
|
return true if Danbooru.config.email_domain_verification_list.blank?
|
|
domain = Mail::Address.new(address).domain
|
|
domain.in?(Danbooru.config.email_domain_verification_list.to_a)
|
|
end
|
|
|
|
def undeliverable?(to_address, from_address: Danbooru.config.contact_email, timeout: 3)
|
|
mail_server = mx_domain(to_address, timeout: timeout)
|
|
mail_server.nil? || rcpt_to_failed?(to_address, from_address, mail_server, timeout: timeout)
|
|
rescue
|
|
false
|
|
end
|
|
|
|
def rcpt_to_failed?(to_address, from_address, mail_server, timeout: nil)
|
|
return false unless smtp_enabled?
|
|
|
|
from_domain = Mail::Address.new(from_address).domain
|
|
|
|
smtp = Net::SMTP.new(mail_server)
|
|
smtp.read_timeout = timeout
|
|
smtp.open_timeout = timeout
|
|
|
|
smtp.start(from_domain) do |conn|
|
|
conn.mailfrom(from_address)
|
|
|
|
# Net::SMTPFatalError is raised if RCPT TO returns a 5xx error.
|
|
response = conn.rcptto(to_address) rescue $!
|
|
return response.is_a?(Net::SMTPFatalError)
|
|
end
|
|
end
|
|
|
|
def mx_domain(to_address, timeout: nil)
|
|
domain = Mail::Address.new(to_address).domain
|
|
|
|
dns = Resolv::DNS.new
|
|
dns.timeouts = timeout
|
|
response = dns.getresource(domain, Resolv::DNS::Resource::IN::MX)
|
|
|
|
response.exchange.to_s
|
|
rescue Resolv::ResolvError
|
|
nil
|
|
end
|
|
end
|