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module MailHandler
module Backends
module TmailBackend
def backend()
'TMail'
end
# Turn raw data into a structured TMail::Mail object
# Documentation at http://i.loveruby.net/en/projects/tmail/doc/
def mail_from_raw_email(data, decode=true)
# Hack round bug in TMail's MIME decoding.
# Report of TMail bug:
# http://rubyforge.org/tracker/index.php?func=detail&aid=21810&group_id=4512&atid=17370
copy_of_raw_data = data.gsub(/; boundary=\s+"/im,'; boundary="')
mail = TMail::Mail.parse(copy_of_raw_data)
mail.base64_decode if decode
mail
end
# Extracts all attachments from the given TNEF file as a TMail::Mail object
def mail_from_tnef(content)
main = TMail::Mail.new
main.set_content_type 'multipart', 'mixed', { 'boundary' => TMail.new_boundary }
tnef_attachments(content).each do |attachment|
tmail_attachment = TMail::Mail.new
tmail_attachment['content-location'] = attachment[:filename]
tmail_attachment.body = attachment[:content]
main.parts << tmail_attachment
end
main
end
# Return a copy of the file name for the mail part
def get_part_file_name(mail_part)
part_file_name = TMail::Mail.get_part_file_name(mail_part)
if part_file_name.nil?
return nil
end
part_file_name = part_file_name.dup
return part_file_name
end
# Get the body of a mail part
def get_part_body(mail_part)
mail_part.body
end
# Return the first from address if any
def get_from_address(mail)
if mail.from_addrs.nil? || mail.from_addrs.size == 0
return nil
end
mail.from_addrs[0].spec
end
# Return the first from name if any
def get_from_name(mail)
mail.from_name_if_present
end
def get_all_addresses(mail)
((mail.to || []) +
(mail.cc || []) +
(mail.envelope_to || [])).uniq
end
def empty_return_path?(mail)
return false if mail['return-path'].nil?
return true if mail['return-path'].addr.to_s == '<>'
return false
end
def get_auto_submitted(mail)
mail['auto-submitted'] ? mail['auto-submitted'].body : nil
end
def address_from_name_and_email(name, email)
if !MySociety::Validate.is_valid_email(email)
raise "invalid email " + email + " passed to address_from_name_and_email"
end
if name.nil?
return TMail::Address.parse(email).to_s
end
# Botch an always quoted RFC address, then parse it
name = name.gsub(/(["\\])/, "\\\\\\1")
TMail::Address.parse('"' + name + '" <' + email + '>').to_s
end
def address_from_string(string)
TMail::Address.parse(string).address
end
end
end
end
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