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Added support for sha512, sha384, sha256, sha224 hashing algorithms to calculate server certificate fingerprints.

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Signed-off-by: velleto <rr@velleto.com>
Signed-off-by: Nicolas Sebrecht <nicolas.s-dev@laposte.net>
This commit is contained in:
velleto 2018-05-14 00:20:37 +02:00 committed by Nicolas Sebrecht
parent db4a5e149f
commit b150daaa49
1 changed files with 7 additions and 4 deletions
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11
offlineimap/imaplibutil.py
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@ -23,7 +23,7 @@ import socket
import errno
import zlib
from sys import exc_info
from hashlib import sha1
from hashlib import sha512, sha384, sha256, sha224, sha1
import six
@ -201,15 +201,18 @@ class WrappedIMAP4_SSL(UsefulIMAPMixIn, IMAP4_SSL):
"having SSL helps nothing.", OfflineImapError.ERROR.REPO)
super(WrappedIMAP4_SSL, self).open(host, port)
if self._fingerprint:
server_cert = self.sock.getpeercert(True)
hashes = sha512, sha384, sha256, sha224, sha1
server_fingerprints = [hash(server_cert).hexdigest() for hash in hashes]
# compare fingerprints
fingerprint = sha1(self.sock.getpeercert(True)).hexdigest()
if fingerprint not in self._fingerprint:
matches = [(server_fingerprint in self._fingerprint) for server_fingerprint in server_fingerprints]
if not any(matches):
raise OfflineImapError("Server SSL fingerprint '%s' "
"for hostname '%s' "
"does not match configured fingerprint(s) %s. "
"Please verify and set 'cert_fingerprint' accordingly "
"if not set yet."%
(fingerprint, host, self._fingerprint),
(server_fingerprints, host, self._fingerprint),
OfflineImapError.ERROR.REPO)