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-rw-r--r--bin/tests/system/forward/ans11/ans.py143
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diff --git a/bin/tests/system/forward/ans11/ans.py b/bin/tests/system/forward/ans11/ans.py
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+++ b/bin/tests/system/forward/ans11/ans.py
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+# Copyright (C) Internet Systems Consortium, Inc. ("ISC")
+#
+# SPDX-License-Identifier: MPL-2.0
+#
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, you can obtain one at https://mozilla.org/MPL/2.0/.
+#
+# See the COPYRIGHT file distributed with this work for additional
+# information regarding copyright ownership.
+
+from __future__ import print_function
+import os
+import sys
+import signal
+import socket
+import select
+from datetime import datetime, timedelta
+import time
+import functools
+
+import dns, dns.message, dns.query, dns.flags
+from dns.rdatatype import *
+from dns.rdataclass import *
+from dns.rcode import *
+from dns.name import *
+
+
+# Log query to file
+def logquery(type, qname):
+ with open("qlog", "a") as f:
+ f.write("%s %s\n", type, qname)
+
+
+############################################################################
+# Respond to a DNS query.
+############################################################################
+def create_response(msg):
+ m = dns.message.from_wire(msg)
+ qname = m.question[0].name.to_text()
+ rrtype = m.question[0].rdtype
+ typename = dns.rdatatype.to_text(rrtype)
+
+ with open("query.log", "a") as f:
+ f.write("%s %s\n" % (typename, qname))
+ print("%s %s" % (typename, qname), end=" ")
+
+ r = dns.message.make_response(m)
+ r.set_rcode(NOERROR)
+ if rrtype == A:
+ tld = qname.split(".")[-2] + "."
+ ns = "local." + tld
+ r.answer.append(dns.rrset.from_text(qname, 300, IN, A, "10.53.0.11"))
+ r.answer.append(dns.rrset.from_text(tld, 300, IN, NS, "local." + tld))
+ r.additional.append(dns.rrset.from_text(ns, 300, IN, A, "10.53.0.11"))
+ elif rrtype == NS:
+ r.answer.append(dns.rrset.from_text(qname, 300, IN, NS, "."))
+ elif rrtype == SOA:
+ r.answer.append(dns.rrset.from_text(qname, 300, IN, SOA, ". . 0 0 0 0 0"))
+ else:
+ r.authority.append(dns.rrset.from_text(qname, 300, IN, SOA, ". . 0 0 0 0 0"))
+ r.flags |= dns.flags.AA
+ return r
+
+
+def sigterm(signum, frame):
+ print("Shutting down now...")
+ os.remove("ans.pid")
+ running = False
+ sys.exit(0)
+
+
+############################################################################
+# Main
+#
+# Set up responder and control channel, open the pid file, and start
+# the main loop, listening for queries on the query channel or commands
+# on the control channel and acting on them.
+############################################################################
+ip4 = "10.53.0.11"
+ip6 = "fd92:7065:b8e:ffff::11"
+
+try:
+ port = int(os.environ["PORT"])
+except:
+ port = 5300
+
+query4_socket = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
+query4_socket.bind((ip4, port))
+havev6 = True
+try:
+ query6_socket = socket.socket(socket.AF_INET6, socket.SOCK_DGRAM)
+ try:
+ query6_socket.bind((ip6, port))
+ except:
+ query6_socket.close()
+ havev6 = False
+except:
+ havev6 = False
+signal.signal(signal.SIGTERM, sigterm)
+
+f = open("ans.pid", "w")
+pid = os.getpid()
+print(pid, file=f)
+f.close()
+
+running = True
+
+print("Listening on %s port %d" % (ip4, port))
+if havev6:
+ print("Listening on %s port %d" % (ip6, port))
+print("Ctrl-c to quit")
+
+if havev6:
+ input = [query4_socket, query6_socket]
+else:
+ input = [query4_socket]
+
+while running:
+ try:
+ inputready, outputready, exceptready = select.select(input, [], [])
+ except select.error as e:
+ break
+ except socket.error as e:
+ break
+ except KeyboardInterrupt:
+ break
+
+ for s in inputready:
+ if s == query4_socket or s == query6_socket:
+ print(
+ "Query received on %s" % (ip4 if s == query4_socket else ip6), end=" "
+ )
+ # Handle incoming queries
+ msg = s.recvfrom(65535)
+ rsp = create_response(msg[0])
+ if rsp:
+ print(dns.rcode.to_text(rsp.rcode()))
+ s.sendto(rsp.to_wire(), msg[1])
+ else:
+ print("NO RESPONSE")
+ if not running:
+ break