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require 'mail/part'
require 'mail/gpg/sign_part'
module Mail
module Gpg
class SignedPart < Mail::Part
def self.build(cleartext_mail)
new do
if cleartext_mail.multipart?
if cleartext_mail.content_type =~ /^(multipart[^;]+)/
# preserve multipart/alternative etc
content_type $1
else
content_type 'multipart/mixed'
end
cleartext_mail.body.parts.each do |p|
add_part Mail::Gpg::SignedPart.build(p)
end
else
content_type cleartext_mail.content_type
if disposition = cleartext_mail.content_disposition
content_disposition disposition
end
if id = cleartext_mail.header['Content-ID']
content_id id
end
# brute force approach to avoid messed up line endings that break
# signatures with Mail 2.7
body Mail::Encodings::Base64.encode cleartext_mail.body.to_s
body.encoding = 'base64'
end
end
end
def sign(options)
SignPart.new(self, options)
end
end
end
end
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