Revision 09b32d70
Added by Marc Dequènes about 15 years ago
- ID 09b32d703dd0a5924155082fd7743e536fd8231f
| lib/cyborghood/mail.rb | ||
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{:ok => false, :msg => "mail not RFC3156 compliant"}.to_ostruct
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end
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def create_reply
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tmail_reply = @mail.create_reply
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tmail_reply.from_addrs = TMail::Address.parse(@config.mail.from_address || self.to.first)
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reply = self.class.new(tmail_reply.to_s)
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reply.set_custom_headers
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reply
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end
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def set_custom_headers
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@mail['Organization'] = @config.mail.organization
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end
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def check_headers
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@mail.header.keys.each do |h|
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@mail[h] = quote_address_if_necessary(@mail[h].to_s, "utf-8")
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end
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end
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def deliver
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check_headers
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smtp_server = @config.mail.smtp_server || "localhost"
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smtp_port = @config.mail.smtp_port || 25
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smtp_from = @mail.from_addrs.collect{|a| a.address}.join(", ")
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smtp_to = @mail.to_addrs.collect{|a| a.address}
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Net::SMTP.start(smtp_server, smtp_port) do |smtp|
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#p @mail.to_s
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smtp.send_message(@mail.to_s, smtp_from, smtp_to)
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end
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end
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def to_s
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@mail.to_s
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end
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def crypt(fingerprint)
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clear_data = build_intermediate_mail()
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encrypted_data = clear_data.pgp_crypt(fingerprint)
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# build properly encrypted mail
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# (modify original mail parts)
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@mail.set_content_type("multipart", "encrypted", {'boundary' => TMail.new_boundary, "protocol" => "application/pgp-encrypted"})
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@mail.transfer_encoding = "7bit"
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@mail['content-disposition'] = nil
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@mail.body = "This mail is a RFC3156 encrypted message.\n"
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@mail.parts.clear
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p_pgp = TMail::Mail.new
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p_pgp.set_content_type("application", "pgp-encrypted")
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p_pgp.transfer_encoding = "7bit"
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p_pgp.content_disposition = "inline"
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p_pgp.body = "Version: 1\n"
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@mail.parts << p_pgp
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p_encrypted = TMail::Mail.new
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p_encrypted.set_content_type("application", "octet-stream")
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p_encrypted.transfer_encoding = "7bit"
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p_encrypted.content_disposition = "inline"
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p_encrypted.body = encrypted_data
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@mail.parts << p_encrypted
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end
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def sign
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data = build_intermediate_mail()
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signature = data.pgp_sign([@config.mail.key_id]) do |uid_hint, passphrase_info, prev_was_bad|
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@config.mail.key_passphrase
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end
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original_content_type = @mail.content_type
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original_content_transfer_encoding = @mail.content_transfer_encoding
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original_content_disposition = @mail.content_disposition
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# build properly signed mail
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# (modify original mail parts)
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@mail.set_content_type("multipart", "signed", {'boundary' => TMail.new_boundary, 'protocol' => "application/pgp-signature"})
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@mail.transfer_encoding = "7bit"
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@mail['content-disposition'] = nil
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@mail.body = "This mail is a RFC3156 signed message.\n"
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@mail.parts.clear
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p_signed = data
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@mail.parts << p_signed
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p_signature = TMail::Mail.new
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p_signature.set_content_type("application", "pgp-signature")
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p_signature.transfer_encoding = "7bit"
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p_signature.content_disposition = "inline"
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p_signature.body = signature
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@mail.parts << p_signature
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end
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def sign_and_crypt(fingerprint)
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sign()
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crypt(fingerprint)
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end
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def quoted_printable_body=(txt)
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@mail.transfer_encoding = "quoted-printable"
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@mail.body = [normalize_new_lines(txt)].pack("M*")
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end
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private
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def build_intermediate_mail
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# build a fake mail to get the generated content to be crypted/signed
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fake_mail = TMail::Mail.new
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fake_mail['content-type'] = @mail['content-type'].to_s
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fake_mail.transfer_encoding = @mail.transfer_encoding if @mail.transfer_encoding
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fake_mail.content_disposition = @mail.content_disposition if @mail.content_disposition
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if @mail.multipart?
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@mail.each_part {|p| fake_mail.parts << p }
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else
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fake_mail.body = @mail.body
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end
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# store the calculated content, to be able to use the raw() method
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fake_mail.write_back
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fake_mail
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end
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def parse_signed
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order = {:ok => false, :msg => "mail not formatted correctly"}
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sig_check = verify_pgp_signature()
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sigs_check = verify_pgp_signature()
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return order.to_ostruct if sigs_check.nil? or sigs_check.size != 1
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sig_check = sigs_check.first
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if sig_check.status == 0
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logger.info "Mail content was properly signed by key #{sig_check.fingerprint}"
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user = Person.find_by_fingerprint(sig_check.fingerprint)
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| ... | ... | |
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catch :notforme do
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begin
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# block is not passed to delegate (limitation ?)
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clear_message = @mail.decrypt do |uid_hint, passphrase_info, prev_was_bad|
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clear_message = @mail.pgp_decrypt do |uid_hint, passphrase_info, prev_was_bad|
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logger.info "Mail crypted for #{uid_hint}"
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# check if requesting passphrase for the expected key
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| ... | ... | |
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order.to_ostruct
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end
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def create_reply
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tmail_reply = @mail.create_reply
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tmail_reply.from_addrs = TMail::Address.parse(@config.mail.from_address || self.to.first)
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reply = self.class.new(tmail_reply.to_s)
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reply.set_custom_headers
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reply
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end
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def set_custom_headers
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@mail['Organization'] = @config.mail.organization
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end
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def check_headers
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@mail.header.keys.each do |h|
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@mail[h] = quote_address_if_necessary(@mail[h].to_s, "utf-8")
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end
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end
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def deliver
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check_headers
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smtp_server = @config.mail.smtp_server || "localhost"
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smtp_port = @config.mail.smtp_port || 25
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smtp_from = @mail.from_addrs.collect{|a| a.address}.join(", ")
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smtp_to = @mail.to_addrs.collect{|a| a.address}
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Net::SMTP.start(smtp_server, smtp_port) do |smtp|
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#p @mail.to_s
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smtp.send_message(@mail.to_s, smtp_from, smtp_to)
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end
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end
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def to_s
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@mail.to_s
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end
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def crypt(fingerprint)
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# build a fake mail to get the generated content to be crypted
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if @mail.multipart?
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fake_mail = TMail::Mail.new
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fake_mail.set_content_type("multipart", "mixed", {'boundary' => TMail.new_boundary})
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@mail.each_part {|p| fake_mail.parts << p }
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clear_data = fake_mail.to_s
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else
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fake_mail = TMail::Mail.new
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fake_mail.content_type = @mail.content_type
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fake_mail.body = @mail.body
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fake_mail.transfer_encoding = @mail.transfer_encoding if @mail.transfer_encoding
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clear_data = fake_mail.to_s
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end
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# retrieve key and encrypt
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gpg = GPGME::Ctx.new
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key = gpg.get_key(fingerprint)
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encrypted_data = GPGME.encrypt([key], clear_data, {:armor => true, :always_trust => true})
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# build properly encrypted mail
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# (modify original mail parts)
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@mail.set_content_type("multipart", "encrypted", {'boundary' => TMail.new_boundary, "protocol" => "application/pgp-encrypted"})
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@mail.transfer_encoding = nil
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@mail.body = "This mail is a RFC3156 encrypted message."
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@mail.parts.clear
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p_pgp = TMail::Mail.new
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p_pgp.set_content_type("application", "pgp-encrypted")
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p_pgp.body = "Version: 1"
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@mail.parts << p_pgp
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p_encrypted = TMail::Mail.new
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p_encrypted.set_content_type("application", "octet-stream")
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p_encrypted.body = encrypted_data
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@mail.parts << p_encrypted
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end
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def quoted_printable_body=(txt)
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@mail.transfer_encoding = "quoted-printable"
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@mail.body = [normalize_new_lines(txt)].pack("M*")
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end
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end
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end
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| lib/tmail_extra.rb | ||
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def verify_pgp_signature
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return nil unless is_pgp_signed?
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# using RAW part, without any decoding
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# remove last EOL due to MIME protocol and properly convert all EOL to CRLF
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content = parts[0].raw.chomp.gsub(/\r?\n/, "\r\n")
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content = parts[0].to_rfc3156
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sig = pgp_signature()
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sig_check = nil
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sigs_check = nil
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GPGME.verify(sig, content) do |signature|
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sig_check = signature
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sigs_check ||= []
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sigs_check << signature
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end
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sig_check
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sigs_check
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end
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def is_pgp_encrypted?
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| ... | ... | |
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parts[1].body
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end
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def decrypt(&passphrase_callback)
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def pgp_decrypt(&passphrase_callback)
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return nil unless is_pgp_encrypted?
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protocol_version = pgp_crypt_info()["Version"].to_i
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raise NotImplementedError, "pgp-encrypted protocol version #{protocol_version} is not implemented" unless protocol_version == 1
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encrypted_data = pgp_encrypted_part()
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passphrase_callback_wrapper = Proc.new do |hook, uid_hint, passphrase_info, prev_was_bad, fd|
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# sending key
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io = IO.for_fd(fd, 'w')
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io.puts hook.call(uid_hint, passphrase_info, prev_was_bad)
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io.flush
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end
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GPGME.decrypt(encrypted_data, {:passphrase_callback => passphrase_callback_wrapper, :passphrase_callback_value => passphrase_callback, :textmode => true})
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GPGME.decrypt(encrypted_data, {:passphrase_callback => method(:gpg_passphrase_callback_wrapper),
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:passphrase_callback_value => passphrase_callback, :textmode => true})
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end
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def pgp_crypt(fingerprint)
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GPGME.encrypt([gpg_key(fingerprint)], self.to_s, {:armor => true, :always_trust => true})
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end
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def pgp_sign(signers_id, &passphrase_callback)
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signers = signers_id.collect{|key_id| gpg_key(key_id) }
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GPGME.sign(self.to_rfc3156, {:signers => signers, :passphrase_callback => method(:gpg_passphrase_callback_wrapper),
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:passphrase_callback_value => passphrase_callback, :armor => true})
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end
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def to_rfc3156
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# using RAW part, without any decoding
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# remove last EOL due to MIME protocol and properly convert all EOL to CRLF
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raw.chomp.gsub(/\r?\n/, "\r\n")
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end
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protected
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def gpg_key(fingerprint)
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gpg = GPGME::Ctx.new
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gpg.get_key(fingerprint)
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end
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def gpg_passphrase_callback_wrapper(hook, uid_hint, passphrase_info, prev_was_bad, fd)
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# sending key
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io = IO.for_fd(fd, 'w')
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io.puts hook.call(uid_hint, passphrase_info, prev_was_bad)
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io.flush
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end
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def raw
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@port.read_all
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end
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| postman | ||
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elsif not order.ok
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logger.info "Sending reply for rejected message (#{order.msg})"
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mail_reply = mail.create_reply
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mail_reply.set_content_type("text", "plain", {'charset' => "utf-8"})
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mail_reply.set_disposition("inline")
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mail_reply.quoted_printable_body = "A message (ID: #{mail.message_id}) apparently from you was rejected for the following reason:\n #{order.msg}"
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mail_reply.sign
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mail_reply.deliver
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msg.delete
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next
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logger.info "Message accepted, processing orders..."
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result_list = CommandParser.run(order)
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# create reply
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logger.info "Sending reply"
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mail_reply = mail.create_reply
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# create transcript
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logger.debug "Preparing reply"
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reply_txt = "Hello #{order.user.cn},\n\nFollows the transcript of your commands:\n"
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reply_attachments = []
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result_list.each do |result|
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| ... | ... | |
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reply_txt << "#{result.message}\n"
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reply_attachments += result.refs unless result.refs.nil?
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end
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# create mail
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logger.debug "Preparing mail"
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mail_reply = mail.create_reply
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if reply_attachments.empty?
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mail_reply.set_content_type("text", "plain")
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mail_reply.set_disposition("inline")
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mail_reply.quoted_printable_body = reply_txt
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transcript_part = mail_reply
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else
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mail_reply.set_content_type("multipart", "mixed", {'boundary' => TMail.new_boundary})
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parts = []
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p = CyborgHood::Mail.new
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p.set_content_type("text", "plain", {'charset' => "utf-8"})
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p.set_disposition("inline")
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p.quoted_printable_body = reply_txt
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transcript_part = p
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mail_reply.parts << p
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reply_attachments.each do |attachment|
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| ... | ... | |
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mail_reply.parts << p
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end
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end
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mail_reply.crypt(order.user.keyFingerPrint)
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# insert transcript
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transcript_part.set_content_type("text", "plain", {'charset' => 'utf-8', 'format' => 'flowed'})
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transcript_part.set_disposition("inline")
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transcript_part.quoted_printable_body = reply_txt
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# send reply
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logger.debug "Sending mail"
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mail_reply.sign_and_crypt(order.user.keyFingerPrint)
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mail_reply.deliver
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logger.debug "Message processed completely"
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logger.info "Message processed completely, deleting"
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msg.delete
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end
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end
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Also available in: Unified diff
[evol] sign outgoing mails, and lot's of fixes and code improvement in mail handling (related to signing, crypting, and preparing/chaining the two)