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Add support for RFC 6594 SSHFP DNS records.

Browse Source 
https://fedorahosted.org/freeipa/ticket/2642
This commit is contained in:
Jan Cholasta 2013-01-08 16:13:07 +01:00 committed by Rob Crittenden
parent c1735e1c80
commit 86dde3a38e
3 changed files with 21 additions and 3 deletions
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3
ipa-client/ipa-install/ipa-client-install
View File

@ -1325,6 +1325,9 @@ def update_ssh_keys(server, hostname, ssh_dir, create_sshfp):
sshfp = pubkey.fingerprint_dns_sha1()
if sshfp is not None:
update_txt += 'update add %s. %s IN SSHFP %s\n' % (hostname, ttl, sshfp)
sshfp = pubkey.fingerprint_dns_sha256()
if sshfp is not None:
update_txt += 'update add %s. %s IN SSHFP %s\n' % (hostname, ttl, sshfp)
update_txt += 'send\n'
if not do_nsupdate(update_txt):

6
ipalib/plugins/host.py
View File

@ -139,6 +139,12 @@ def update_sshfp_record(zone, record, entry_attrs):
continue
if sshfp is not None:
sshfps.append(sshfp)
try:
sshfp = SSHPublicKey(pubkey).fingerprint_dns_sha256()
except ValueError, UnicodeDecodeError:
continue
if sshfp is not None:
sshfps.append(sshfp)
try:
api.Command['dnsrecord_mod'](zone, record, sshfprecord=sshfps)

15
ipapython/ssh.py
View File

@ -26,6 +26,7 @@ import base64
import re
import struct
from hashlib import md5, sha1
from hashlib import sha256 #pylint: disable=E0611
__all__ = ['SSHPublicKey']
@ -187,12 +188,20 @@ class SSHPublicKey(object):
fp = u':'.join([fp[j:j+2] for j in range(0, len(fp), 2)])
return fp
def fingerprint_dns_sha1(self):
def _fingerprint_dns(self, fpfunc, fptype):
if self._keytype == 'ssh-rsa':
keytype = 1
elif self._keytype == 'ssh-dss':
keytype = 2
elif self._keytype.startswith('ecdsa-sha2-') and '@' not in self._keytype:
keytype = 3
else:
return
fp = sha1(self._key).hexdigest().upper()
return u'%d 1 %s' % (keytype, fp)
fp = fpfunc(self._key).hexdigest().upper()
return u'%d %d %s' % (keytype, fptype, fp)
def fingerprint_dns_sha1(self):
return self._fingerprint_dns(sha1, 1)
def fingerprint_dns_sha256(self):
return self._fingerprint_dns(sha256, 2)