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Validate that the reverse DNS record is correct

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This patch ensures that PTR records added by FreeIPA are compliant with
RFC.

https://fedorahosted.org/freeipa/ticket/839
This commit is contained in:
Jan Zeleny 2011-02-16 04:47:36 -05:00 committed by Rob Crittenden
parent 2d97f4b335
commit 23234094c3
1 changed files with 16 additions and 0 deletions
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16
ipalib/plugins/dns.py
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@ -622,6 +622,22 @@ class dnsrecord_add(LDAPCreate, dnsrecord_cmd_w_record_options):
is_ns_rec_resolvable(ns)
return dn
def _ptrrecord_pre_callback(self, ldap, dn, entry_attrs, *keys, **options):
components = dn.split(',',2)
addr = components[0].split('=')[1]
zone = components[1].split('=')[1]
if zone.find('ip6') != -1:
zone = zone.replace('.ip6.arpa.','')
zone_len = 32
else:
zone = zone.replace('.in-addr.arpa.','')
zone_len = 4
if len(addr.split('.'))+len(zone.split('.')) != zone_len:
raise errors.ValidationError(name='cn', error=unicode('IP address must have exactly '+str(zone_len)+' components'))
return dn
def pre_callback(self, ldap, dn, entry_attrs, *keys, **options):
for rtype in options:
rtype_cb = '_%s_pre_callback' % rtype