From: Geoffrey Thomas <geofft@mit.edu>
Date: Sun, 24 Aug 2008 10:44:33 +0000 (-0400)
Subject: Add "passup" and "parent" options to the DNS config, to allow forwarding
X-Git-Tag: sipb-xen-dns/1.05~3
X-Git-Url: http://xvm.mit.edu/gitweb/invirt/packages/invirt-dns.git/commitdiff_plain/cfad04ef8af8968e925b6f68216898b086cbbc92

Add "passup" and "parent" options to the DNS config, to allow forwarding
certain names as CNAME to a parent domain. This was implemented for the Vista
activation server SRV record, but can be used to pass on any well-known
reserved names.

svn path=/trunk/packages/sipb-xen-dns/; revision=913
---

diff --git a/code/dnsserver.py b/code/dnsserver.py
index 7a7cf22..ee18cca 100755
--- a/code/dnsserver.py
+++ b/code/dnsserver.py
@@ -85,6 +85,12 @@ class DatabaseAuthority(common.ResolverBase):
                     results.append(dns.RRHeader(domain, dns.SOA, dns.IN,
                                                 ttl, self.soa, auth=True))
             else:
+                if 'passup' in dir(config.dns) and host in config.dns.passup:
+                    record = dns.Record_CNAME('%s.%s' % (host, config.dns.parent), ttl)
+                    return defer.succeed((
+                        [dns.RRHeader(name, dns.CNAME, dns.IN, ttl, record, auth=True)],
+                        [], []))
+
                 if host:
                     value = invirt.database.Machine.get_by(name=host)
                     if value is None or not value.nics: