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# frozen_string_literal: true
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?
end
private
def blocked_email_provider?
disallowed_through_email_domain_block? || disallowed_through_configuration? || not_allowed_through_configuration?
end
def blocked_canonical_email?
CanonicalEmailBlock.block?(@email)
end
def disallowed_through_email_domain_block?
EmailDomainBlock.block?(@email)
end
def not_allowed_through_configuration?
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?
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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