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diff --git a/bin/tests/system/qmin/ans4/ans.py b/bin/tests/system/qmin/ans4/ans.py
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+++ b/bin/tests/system/qmin/ans4/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)
+
+
+def endswith(domain, labels):
+ return domain.endswith("." + labels) or domain == labels
+
+
+############################################################################
+# Respond to a DNS query.
+# For good. it serves:
+# icky.ptang.zoop.boing.good. NS a.bit.longer.ns.name.
+# icky.icky.icky.ptang.zoop.boing.good. A 192.0.2.1
+# more.icky.icky.icky.ptang.zoop.boing.good. A 192.0.2.2
+# it responds properly (with NODATA empty response) to non-empty terminals
+#
+# For slow. it works the same as for good., but each response is delayed by 400 milliseconds
+#
+# For bad. it works the same as for good., but returns NXDOMAIN to non-empty terminals
+#
+# For ugly. it works the same as for good., but returns garbage to non-empty terminals
+#
+# For stale. it serves:
+# a.b.stale. IN TXT hooray (resolver did do qname minimization)
+############################################################################
+def create_response(msg):
+ m = dns.message.from_wire(msg)
+ qname = m.question[0].name.to_text()
+ lqname = qname.lower()
+ labels = lqname.split(".")
+ suffix = ""
+
+ # get qtype
+ rrtype = m.question[0].rdtype
+ typename = dns.rdatatype.to_text(rrtype)
+ if typename == "A" or typename == "AAAA":
+ typename = "ADDR"
+ bad = False
+ slow = False
+ ugly = False
+
+ # log this query
+ with open("query.log", "a") as f:
+ f.write("%s %s\n" % (typename, lqname))
+ print("%s %s" % (typename, lqname), end=" ")
+
+ r = dns.message.make_response(m)
+ r.set_rcode(NOERROR)
+
+ ip6req = False
+
+ if endswith(lqname, "bad."):
+ bad = True
+ suffix = "bad."
+ lqname = lqname[:-4]
+ elif endswith(lqname, "ugly."):
+ ugly = True
+ suffix = "ugly."
+ lqname = lqname[:-5]
+ elif endswith(lqname, "good."):
+ suffix = "good."
+ lqname = lqname[:-5]
+ elif endswith(lqname, "slow."):
+ slow = True
+ suffix = "slow."
+ lqname = lqname[:-5]
+ elif endswith(lqname, "1.1.1.1.8.2.6.0.1.0.0.2.ip6.arpa."):
+ ip6req = True
+ elif endswith(lqname, "b.stale."):
+ if lqname == "a.b.stale.":
+ if rrtype == TXT:
+ # Direct query.
+ r.answer.append(dns.rrset.from_text(lqname, 1, IN, TXT, "hooray"))
+ r.flags |= dns.flags.AA
+ elif rrtype == NS:
+ # NS a.b.
+ r.answer.append(dns.rrset.from_text(lqname, 1, IN, NS, "ns.a.b.stale."))
+ r.additional.append(
+ dns.rrset.from_text("ns.a.b.stale.", 1, IN, A, "10.53.0.3")
+ )
+ r.flags |= dns.flags.AA
+ elif rrtype == SOA:
+ # SOA a.b.
+ r.answer.append(
+ dns.rrset.from_text(
+ lqname, 1, IN, SOA, "a.b.stale. hostmaster.a.b.stale. 1 2 3 4 5"
+ )
+ )
+ r.flags |= dns.flags.AA
+ else:
+ # NODATA.
+ r.authority.append(
+ dns.rrset.from_text(
+ lqname, 1, IN, SOA, "a.b.stale. hostmaster.a.b.stale. 1 2 3 4 5"
+ )
+ )
+ elif lqname == "b.stale.":
+ if rrtype == NS:
+ # NS b.
+ r.answer.append(dns.rrset.from_text(lqname, 1, IN, NS, "ns.b.stale."))
+ r.additional.append(
+ dns.rrset.from_text("ns.b.stale.", 1, IN, A, "10.53.0.4")
+ )
+ r.flags |= dns.flags.AA
+ elif rrtype == SOA:
+ # SOA b.
+ r.answer.append(
+ dns.rrset.from_text(
+ lqname, 1, IN, SOA, "b.stale. hostmaster.b.stale. 1 2 3 4 5"
+ )
+ )
+ r.flags |= dns.flags.AA
+ else:
+ # NODATA.
+ r.authority.append(
+ dns.rrset.from_text(
+ lqname, 1, IN, SOA, "b.stale. hostmaster.b.stale. 1 2 3 4 5"
+ )
+ )
+ else:
+ r.authority.append(
+ dns.rrset.from_text(
+ lqname, 1, IN, SOA, "b.stale. hostmaster.b.stale. 1 2 3 4 5"
+ )
+ )
+ r.set_rcode(NXDOMAIN)
+ # NXDOMAIN.
+ return r
+ else:
+ r.set_rcode(REFUSED)
+ return r
+
+ # Good/bad differs only in how we treat non-empty terminals
+ if lqname == "icky.icky.icky.ptang.zoop.boing." and rrtype == A:
+ r.answer.append(dns.rrset.from_text(lqname + suffix, 1, IN, A, "192.0.2.1"))
+ r.flags |= dns.flags.AA
+ elif lqname == "more.icky.icky.icky.ptang.zoop.boing." and rrtype == A:
+ r.answer.append(dns.rrset.from_text(lqname + suffix, 1, IN, A, "192.0.2.2"))
+ r.flags |= dns.flags.AA
+ elif lqname == "icky.ptang.zoop.boing." and rrtype == NS:
+ r.answer.append(
+ dns.rrset.from_text(
+ lqname + suffix, 1, IN, NS, "a.bit.longer.ns.name." + suffix
+ )
+ )
+ r.flags |= dns.flags.AA
+ elif endswith(lqname, "icky.ptang.zoop.boing."):
+ r.authority.append(
+ dns.rrset.from_text(
+ "icky.ptang.zoop.boing." + suffix,
+ 1,
+ IN,
+ SOA,
+ "ns2." + suffix + " hostmaster.arpa. 2018050100 1 1 1 1",
+ )
+ )
+ if bad or not endswith("more.icky.icky.icky.ptang.zoop.boing.", lqname):
+ r.set_rcode(NXDOMAIN)
+ if ugly:
+ r.set_rcode(FORMERR)
+ elif ip6req:
+ r.flags |= dns.flags.AA
+ if (
+ lqname
+ == "test1.test2.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.9.0.9.4.1.1.1.1.8.2.6.0.1.0.0.2.ip6.arpa."
+ and rrtype == TXT
+ ):
+ r.answer.append(
+ dns.rrset.from_text(
+ "test1.test2.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.9.0.9.4.1.1.1.1.8.2.6.0.1.0.0.2.ip6.arpa.",
+ 1,
+ IN,
+ TXT,
+ "long_ip6_name",
+ )
+ )
+ elif endswith(
+ "0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.9.0.9.4.1.1.1.1.8.2.6.0.1.0.0.2.ip6.arpa.",
+ lqname,
+ ):
+ # NODATA answer
+ r.authority.append(
+ dns.rrset.from_text(
+ "1.1.1.1.8.2.6.0.1.0.0.2.ip6.arpa.",
+ 60,
+ IN,
+ SOA,
+ "ns4.good. hostmaster.arpa. 2018050100 120 30 320 16",
+ )
+ )
+ else:
+ # NXDOMAIN
+ r.authority.append(
+ dns.rrset.from_text(
+ "1.1.1.1.8.2.6.0.1.0.0.2.ip6.arpa.",
+ 60,
+ IN,
+ SOA,
+ "ns4.good. hostmaster.arpa. 2018050100 120 30 320 16",
+ )
+ )
+ r.set_rcode(NXDOMAIN)
+ else:
+ r.set_rcode(REFUSED)
+
+ if slow:
+ time.sleep(0.4)
+ 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 = "10.53.0.4"
+ip6 = "fd92:7065:b8e:ffff::4"
+
+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
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-21 11:05:07 +0000