X-Git-Url: http://xvm.mit.edu/gitweb/invirt/packages/invirt-dns.git/blobdiff_plain/25a7a3668877aea61fbf110673f5a5d2f9a464ee..2c0da3671a070000abc7be2906f2d32facf6524e:/code/dnsserver.py

diff --git a/code/dnsserver.py b/code/dnsserver.py
index 0cad87a..08cf979 100755
--- a/code/dnsserver.py
+++ b/code/dnsserver.py
@@ -16,11 +16,11 @@ class DatabaseAuthority(common.ResolverBase):
 
     soa = None
 
-    def __init__(self, domain, database=None):
+    def __init__(self, domains, database=None):
         common.ResolverBase.__init__(self)
         if database is not None:
             sipb_xen_database.connect(database)
-        self.domain = domain
+        self.domains = domains
         self.soa = dns.Record_SOA(mname='sipb-xen-dev.mit.edu', 
                                   rname='sipb-xen.mit.edu',
                                   serial=1, refresh=3600, retry=900,
@@ -40,32 +40,44 @@ class DatabaseAuthority(common.ResolverBase):
 
     def _lookup_unsafe(self, name, cls, type, timeout):
         sipb_xen_database.clear_cache()
-        if not (name.lower() == self.domain or 
-                name.lower().endswith('.'+self.domain)):
-            #Not us
-            return defer.fail(failure.Failure(dns.DomainError(name)))
+        if name.lower() in self.domains:
+            domain = name.lower()
+        else:
+            for domain in self.domains:
+                if name.lower().endswith('.'+domain):
+                    break
+            else: #Not us
+                return defer.fail(failure.Failure(dns.DomainError(name)))
         results = []
         if cls == dns.IN and type in (dns.A, dns.ALL_RECORDS):
-            host = name[:-len(self.domain)-1]
-            value = sipb_xen_database.Machine.get_by(name=host)
-            if value is None or not value.nics:
-                return defer.fail(failure.Failure(dns.AuthoritativeDomainError(name)))
-            ip = value.nics[0].ip
-            if ip is None:  #Deactivated?
-                return defer.fail(failure.Failure(dns.AuthoritativeDomainError(name)))
-            ttl = 900
-            record = dns.Record_A(ip, ttl)
-            results.append(dns.RRHeader(name, dns.A, dns.IN, 
-                                        ttl, record, auth=True))
+            host = name[:-len(domain)-1]
+            if not host:
+                ttl = 900
+                record = dns.Record_CNAME('sipb-xen-dev.mit.edu', ttl)
+                results.append(dns.RRHeader(name, dns.CNAME, dns.IN, 
+                                            ttl, record, auth=True))
+            else:
+                value = sipb_xen_database.Machine.get_by(name=host)
+                if value is None or not value.nics:
+                    return defer.fail(failure.Failure(dns.AuthoritativeDomainError(name)))
+                ip = value.nics[0].ip
+                if ip is None:  #Deactivated?
+                    return defer.fail(failure.Failure(dns.AuthoritativeDomainError(name)))
+                ttl = 900
+                record = dns.Record_A(ip, ttl)
+                results.append(dns.RRHeader(name, dns.A, dns.IN, 
+                                            ttl, record, auth=True))
         authority = []
-        authority.append(dns.RRHeader(self.domain, dns.SOA, dns.IN, 3600,
-                                      self.soa, auth=True))
+        auth_record = dns.Record_NS(name='ns1.xvm.mit.edu', ttl=3600)
+        authority.append(dns.RRHeader(domain, dns.NS, dns.IN,
+                                      3600, auth_record, auth=True))
         return defer.succeed((results, authority, []))
         #Doesn't exist
         return defer.fail(failure.Failure(dns.AuthoritativeDomainError(name)))
 
 if '__main__' == __name__:
-    resolver = DatabaseAuthority('servers.csail.mit.edu',
+    resolver = DatabaseAuthority(['servers.csail.mit.edu',
+                                  'xvm.mit.edu'],
                                  'postgres://sipb-xen@sipb-xen-dev/sipb_xen')
 
     verbosity = 0