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authorRuben Pollan <meskio@sindominio.net>2015-01-28 14:24:32 -0600
committerKali Kaneko <kali@leap.se>2015-02-11 14:05:44 -0400
commit50afe275cdb1e030cf7caa231fa4ffce4b45588c (patch)
tree2d24a6777423d4bf404a737eef8715aaeb85a2fb /src/leap/mail/outgoing/service.py
parent3cd1e6ace64fad041873cb08b74789f9b78c50c9 (diff)
Add public key as attachment
Diffstat (limited to 'src/leap/mail/outgoing/service.py')
-rw-r--r--src/leap/mail/outgoing/service.py42
1 files changed, 41 insertions, 1 deletions
diff --git a/src/leap/mail/outgoing/service.py b/src/leap/mail/outgoing/service.py
index 88b8895..9777187 100644
--- a/src/leap/mail/outgoing/service.py
+++ b/src/leap/mail/outgoing/service.py
@@ -18,6 +18,8 @@ import re
from StringIO import StringIO
from email.parser import Parser
from email.mime.application import MIMEApplication
+from email.mime.multipart import MIMEMultipart
+from email.mime.text import MIMEText
from OpenSSL import SSL
@@ -250,10 +252,48 @@ class OutgoingMail:
% (to_address, from_address))
signal(proto.SMTP_START_ENCRYPT_AND_SIGN,
"%s,%s" % (self._from_address, to_address))
- d = self._encrypt_and_sign(origmsg, to_address, from_address)
+ d = self._maybe_attach_key(origmsg, from_address, to_address)
+ d.addCallback(self._encrypt_and_sign, to_address, from_address)
d.addCallbacks(signal_encrypt_sign, if_key_not_found_send_unencrypted)
return d
+ def _maybe_attach_key(self, origmsg, from_address, to_address):
+ filename = "%s-email-key.asc" % (from_address,)
+
+ def attach_if_address_hasnt_encrypted(to_key):
+ # if the sign_used flag is true that means that we got an encrypted
+ # email from this address, because we conly check signatures on
+ # encrypted emails. In this case we don't attach.
+ # XXX: this might not be true some time in the future
+ if to_key.sign_used:
+ return origmsg
+
+ d = self._keymanager.get_key(from_address, OpenPGPKey,
+ fetch_remote=False)
+ d.addCallback(attach_key)
+ return d
+
+ def attach_key(from_key):
+ msg = origmsg
+ if not origmsg.is_multipart():
+ msg = MIMEMultipart()
+ for h, v in origmsg.items():
+ msg.add_header(h, v)
+ msg.attach(MIMEText(origmsg.get_payload()))
+
+ keymsg = MIMEApplication(from_key.key_data, _subtype='pgp-keys',
+ _encoder=lambda x: x)
+ keymsg.add_header('content-disposition', 'attachment',
+ filename=filename)
+ msg.attach(keymsg)
+ return msg
+
+ d = self._keymanager.get_key(to_address, OpenPGPKey,
+ fetch_remote=False)
+ d.addCallback(attach_if_address_hasnt_encrypted)
+ d.addErrback(lambda _: origmsg)
+ return d
+
def _encrypt_and_sign(self, origmsg, encrypt_address, sign_address):
"""
Create an RFC 3156 compliang PGP encrypted and signed message using