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# frozen_string_literal: true
module Mail
class SmtpEnvelope #:nodoc:
# Reasonable cap on address length to avoid SMTP line length
# overflow on old SMTP servers.
MAX_ADDRESS_BYTESIZE = 2000
attr_reader :from, :to, :message
def initialize(mail)
self.from = mail.smtp_envelope_from
self.to = mail.smtp_envelope_to
self.message = mail.encoded
end
def from=(addr)
if Utilities.blank? addr
raise ArgumentError, "SMTP From address may not be blank: #{addr.inspect}"
end
@from = validate_addr 'From', addr
end
def to=(addr)
if Utilities.blank?(addr)
raise ArgumentError, "SMTP To address may not be blank: #{addr.inspect}"
end
@to = Array(addr).map do |addr|
validate_addr 'To', addr
end
end
def message=(message)
if Utilities.blank?(message)
raise ArgumentError, 'SMTP message may not be blank'
end
@message = message
end
private
def validate_addr(addr_name, addr)
if addr.bytesize > MAX_ADDRESS_BYTESIZE
raise ArgumentError, "SMTP #{addr_name} address may not exceed #{MAX_ADDRESS_BYTESIZE} bytes: #{addr.inspect}"
end
if /[\r\n]/ =~ addr
raise ArgumentError, "SMTP #{addr_name} address may not contain CR or LF line breaks: #{addr.inspect}"
end
addr
end
end
end
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