Re: template questions -- hashcash and gpg ?
Corey Halpin <[email protected]>
| Newsgroups | gmane.mail.spam.tmda.user |
|---|---|
| Message-ID | <[email protected]> |
On 2008-01-24, Corey Halpin wrote: > The documentation reading that I've done leads me to suspect that what I'm > asking is not (currently) possible. If this is in fact true, I'd appreciate > some pointers as to where in the tmda code I'll need to start hacking. Attached is a (mostly working) patch to optionally gpg-sign autoreplies generated by TMDA. I've followed the 'passwordless signing subkeys' instructions from: http://fortytwo.ch/gpg/subkeys I'm following (or rather, attempting to follow) RFC 3156 with respect to the signature format: http://www.faqs.org/rfcs/rfc3156.html It's proving more difficult than I thought. The signatures I generate are invalid. I think this is due to white-space differences in how the payload of my text/plain part is encoded in the message vs what I get back from body_text.as_string(). If anyone has suggestions as to how this should be worked around, I'm all ears. Once I figure out how to make this actually work, I'll write up a page on the wiki. Thanks for any help. ~crh
patch-gpg_signed_autoreply
(text/plain, 2.7 KB)
Index: tmda-1.1.12/TMDA/AutoResponse.py
===================================================================
--- tmda-1.1.12.orig/TMDA/AutoResponse.py 2008-01-24 23:46:03.166814000 -0600
+++ tmda-1.1.12/TMDA/AutoResponse.py 2008-01-25 10:34:38.000000000 -0600
@@ -23,12 +23,14 @@
from email import message_from_string
+from email import encoders
from email.charset import add_alias
from email.errors import MessageError
from email.header import Header, decode_header
from email.mime.message import MIMEMessage
from email.mime.multipart import MIMEMultipart
from email.mime.text import MIMEText
+from email.mime.application import MIMEApplication
from email.utils import formataddr, parseaddr
import os
@@ -121,8 +123,7 @@
for h in bad_headers:
if self.bouncemsg.has_key(h):
del self.bouncemsg[h]
- textpart = MIMEText(self.bouncemsg.get_payload(), 'plain',
- self.bodycharset)
+ textpart = self.create_text();
bodyparts = 1 + Defaults.AUTORESPONSE_INCLUDE_SENDER_COPY
if bodyparts == 1:
# A single text/plain entity.
@@ -242,3 +243,25 @@
response_filename), 'w')
fp.close()
+ def create_text(self):
+ """
+ Create the body part of the MIME entity for the auto reply.
+ """
+ rc = None
+ if Defaults.USE_GPG_SIGNATURES:
+ rc=MIMEMultipart('signed', micalg='pgp-sha1',
+ protocol='application/pgp-signature')
+ body_text = MIMEText(self.bouncemsg.get_payload(),'plain',
+ self.bodycharset)
+ (gpg_in, gpg_out)=os.popen2('gpg -a -b')
+ gpg_in.write(body_text.as_string()); gpg_in.close()
+ signature = gpg_out.read(); gpg_out.close()
+ body_signature = MIMEApplication(signature, 'pgp-signature',
+ encoders.encode_noop )
+ rc.attach(body_text);
+ rc.attach(body_signature);
+ else:
+ rc = MIMEText(self.bouncemsg.get_payload(), 'plain',
+ self.bodycharset)
+ return rc
+
Index: tmda-1.1.12/TMDA/Defaults.py
===================================================================
--- tmda-1.1.12.orig/TMDA/Defaults.py 2008-01-24 23:57:06.000000000 -0600
+++ tmda-1.1.12/TMDA/Defaults.py 2008-01-24 23:57:31.000000000 -0600
@@ -1571,6 +1571,9 @@
if not vars().has_key('CRYPT_KEY_FILE'):
CRYPT_KEY_FILE = os.path.join(DATADIR, 'crypt_key')
+if not vars().has_key('USE_GPG_SIGNATURES'):
+ USE_GPG_SIGNATURES = False
+
###################################
# END of user configurable settings
###################################
signature.asc
(application/pgp-signature, 187 B)
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