Ausgabe der neuen DB Einträge

venv/lib/python3.9/site-packages/twisted/names/tap.py

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+# -*- test-case-name: twisted.names.test.test_tap -*-
+# Copyright (c) Twisted Matrix Laboratories.
+# See LICENSE for details.
+
+"""
+Domain Name Server
+"""
+
+import os, traceback
+
+from twisted.python import usage
+from twisted.names import dns
+from twisted.application import internet, service
+
+from twisted.names import server
+from twisted.names import authority
+from twisted.names import secondary
+
+class Options(usage.Options):
+    optParameters = [
+        ["interface", "i", "",   "The interface to which to bind"],
+        ["port",      "p", "53", "The port on which to listen"],
+        ["resolv-conf", None, None,
+            "Override location of resolv.conf (implies --recursive)"],
+        ["hosts-file", None, None, "Perform lookups with a hosts file"],
+    ]
+
+    optFlags = [
+        ["cache",       "c", "Enable record caching"],
+        ["recursive",   "r", "Perform recursive lookups"],
+        ["verbose",     "v", "Log verbosely"],
+    ]
+
+    compData = usage.Completions(
+        optActions={"interface" : usage.CompleteNetInterfaces()}
+        )
+
+    zones = None
+    zonefiles = None
+
+    def __init__(self):
+        usage.Options.__init__(self)
+        self['verbose'] = 0
+        self.bindfiles = []
+        self.zonefiles = []
+        self.secondaries = []
+
+
+    def opt_pyzone(self, filename):
+        """Specify the filename of a Python syntax zone definition"""
+        if not os.path.exists(filename):
+            raise usage.UsageError(filename + ": No such file")
+        self.zonefiles.append(filename)
+
+    def opt_bindzone(self, filename):
+        """Specify the filename of a BIND9 syntax zone definition"""
+        if not os.path.exists(filename):
+            raise usage.UsageError(filename + ": No such file")
+        self.bindfiles.append(filename)
+
+
+    def opt_secondary(self, ip_domain):
+        """Act as secondary for the specified domain, performing
+        zone transfers from the specified IP (IP/domain)
+        """
+        args = ip_domain.split('/', 1)
+        if len(args) != 2:
+            raise usage.UsageError("Argument must be of the form IP[:port]/domain")
+        address = args[0].split(':')
+        if len(address) == 1:
+            address = (address[0], dns.PORT)
+        else:
+            try:
+                port = int(address[1])
+            except ValueError:
+                raise usage.UsageError(
+                    "Specify an integer port number, not %r" % (address[1],))
+            address = (address[0], port)
+        self.secondaries.append((address, [args[1]]))
+
+
+    def opt_verbose(self):
+        """Increment verbosity level"""
+        self['verbose'] += 1
+
+
+    def postOptions(self):
+        if self['resolv-conf']:
+            self['recursive'] = True
+
+        self.svcs = []
+        self.zones = []
+        for f in self.zonefiles:
+            try:
+                self.zones.append(authority.PySourceAuthority(f))
+            except Exception:
+                traceback.print_exc()
+                raise usage.UsageError("Invalid syntax in " + f)
+        for f in self.bindfiles:
+            try:
+                self.zones.append(authority.BindAuthority(f))
+            except Exception:
+                traceback.print_exc()
+                raise usage.UsageError("Invalid syntax in " + f)
+        for f in self.secondaries:
+            svc = secondary.SecondaryAuthorityService.fromServerAddressAndDomains(*f)
+            self.svcs.append(svc)
+            self.zones.append(self.svcs[-1].getAuthority())
+        try:
+            self['port'] = int(self['port'])
+        except ValueError:
+            raise usage.UsageError("Invalid port: %r" % (self['port'],))
+
+
+def _buildResolvers(config):
+    """
+    Build DNS resolver instances in an order which leaves recursive
+    resolving as a last resort.
+
+    @type config: L{Options} instance
+    @param config: Parsed command-line configuration
+
+    @return: Two-item tuple of a list of cache resovers and a list of client
+        resolvers
+    """
+    from twisted.names import client, cache, hosts
+
+    ca, cl = [], []
+    if config['cache']:
+        ca.append(cache.CacheResolver(verbose=config['verbose']))
+    if config['hosts-file']:
+        cl.append(hosts.Resolver(file=config['hosts-file']))
+    if config['recursive']:
+        cl.append(client.createResolver(resolvconf=config['resolv-conf']))
+    return ca, cl
+
+
+def makeService(config):
+    ca, cl = _buildResolvers(config)
+
+    f = server.DNSServerFactory(config.zones, ca, cl, config['verbose'])
+    p = dns.DNSDatagramProtocol(f)
+    f.noisy = 0
+    ret = service.MultiService()
+    for (klass, arg) in [(internet.TCPServer, f), (internet.UDPServer, p)]:
+        s = klass(config['port'], arg, interface=config['interface'])
+        s.setServiceParent(ret)
+    for svc in config.svcs:
+        svc.setServiceParent(ret)
+    return ret