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# frozen_string_literal: true
class BlacklistedEmailValidator < ActiveModel::Validator
def validate(user)
return if user.valid_invitation? || user.email.blank?
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?(email, ip)
disallowed_through_email_domain_block?(email, ip) || disallowed_through_configuration?(email) || not_allowed_through_configuration?(email)
end
def blocked_canonical_email?(email)
CanonicalEmailBlock.block?(email)
end
def disallowed_through_email_domain_block?(email, ip)
EmailDomainBlock.block?(email, attempt_ip: ip)
end
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
end
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)
end
end
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