mirror of
https://github.com/Hopiu/linkchecker.git
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removed
git-svn-id: https://linkchecker.svn.sourceforge.net/svnroot/linkchecker/trunk/linkchecker@1404 e7d03fd6-7b0d-0410-9947-9c21f3af8025
This commit is contained in:
calvin
parent
c9261c96c2
commit
b48c84fe21
8 changed files with 0 additions and 1148 deletions
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@ -1,230 +0,0 @@
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# -*- coding: iso-8859-1 -*-
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"""
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This file is part of the pydns project.
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Homepage: http://pydns.sourceforge.net
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This code is covered by the standard Python License.
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Base functionality. Request and Response classes, that sort of thing.
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"""
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import select
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import socket
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import string
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import types
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import time
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import asyncore
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import os
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class DNSError (Exception):
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pass
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import Lib
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import Type
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import Class
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import Opcode
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defaults = {
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'protocol':'udp',
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'port':53,
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'opcode':Opcode.QUERY,
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'qtype':Type.A,
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'rd':1,
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'timing':1,
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'timeout': 30,
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}
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class DnsRequest (object):
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""" high level Request object """
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def __init__ (self, name, config, **args):
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self.donefunc = None
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self.async = None
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self.defaults = {}
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self.argparse(name, config, args)
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self.defaults = self.args
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def argparse (self, name, config, args):
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self.name = name
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self.config = config
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args['server'] = self.config.nameservers[0]
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for i in defaults.keys():
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if not args.has_key(i):
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if self.defaults.has_key(i):
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args[i]=self.defaults[i]
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else:
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args[i]=defaults[i]
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self.args=args
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def socketInit (self, a, b):
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self.s = socket.socket(a,b)
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def processUDPReply (self):
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if self.args['timeout'] > 0:
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r,w,e = select.select([self.s],[],[],self.args['timeout'])
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if not len(r):
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raise DNSError, 'Timeout'
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self.reply = self.s.recv(1024)
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self.time_finish=time.time()
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self.args['server']=self.ns
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return self.processReply()
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def processTCPReply (self):
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self.f = self.s.makefile('r')
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header = self.f.read(2)
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if len(header) < 2:
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raise DNSError,'EOF'
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count = Lib.unpack16bit(header)
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self.reply = self.f.read(count)
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if len(self.reply) != count:
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raise DNSError,'incomplete reply'
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self.time_finish=time.time()
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self.args['server']=self.ns
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return self.processReply()
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def processReply (self):
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self.args['elapsed']=(self.time_finish-self.time_start)*1000
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u = Lib.Munpacker(self.reply)
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r = Lib.DnsResult(u,self.args)
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r.args = self.args
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#self.args=None # mark this DnsRequest object as used.
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return r
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#### TODO TODO TODO ####
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# if protocol == 'tcp' and qtype == Type.AXFR:
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# while 1:
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# header = f.read(2)
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# if len(header) < 2:
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# print '========== EOF =========='
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# break
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# count = Lib.unpack16bit(header)
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# if not count:
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# print '========== ZERO COUNT =========='
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# break
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# print '========== NEXT =========='
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# reply = f.read(count)
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# if len(reply) != count:
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# print '*** Incomplete reply ***'
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# break
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# u = Lib.Munpacker(reply)
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# Lib.dumpM(u)
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def conn (self):
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self.s.connect((self.ns, self.port))
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def req (self):
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" needs a refactoring "
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#if not self.args:
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# raise DNSError,'reinitialize request before reuse'
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protocol = self.args['protocol']
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self.port = self.args['port']
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opcode = self.args['opcode']
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rd = self.args['rd']
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server=self.args['server']
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if type(self.args['qtype']) == types.StringType:
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try:
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qtype = getattr(Type, string.upper(self.args['qtype']))
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except AttributeError:
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raise DNSError,'unknown query type'
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else:
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qtype=self.args['qtype']
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qname = self.name
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if qtype == Type.AXFR:
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print 'Query type AXFR, protocol forced to TCP'
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protocol = 'tcp'
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#print 'QTYPE %d(%s)' % (qtype, Type.typestr(qtype))
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m = Lib.Mpacker()
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# jesus. keywords and default args would be good. TODO.
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m.addHeader(0,
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0, opcode, 0, 0, rd, 0, 0, 0,
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1, 0, 0, 0)
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m.addQuestion(qname, qtype, Class.IN)
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self.request = m.getbuf()
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if protocol == 'udp':
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self.sendUDPRequest(server)
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else:
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self.sendTCPRequest(server)
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if self.async:
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return None
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else:
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return self.response
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def sendUDPRequest (self, server):
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"refactor me"
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self.response = None
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self.socketInit(socket.AF_INET, socket.SOCK_DGRAM)
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for self.ns in server:
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try:
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# TODO. Handle timeouts &c correctly (RFC)
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#self.s.connect((self.ns, self.port))
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self.conn()
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self.time_start=time.time()
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if not self.async:
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self.s.send(self.request)
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self.response=self.processUDPReply()
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#except socket.error:
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except None:
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continue
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break
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if not self.response:
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if not self.async:
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raise DNSError,'no working nameservers found'
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def sendTCPRequest (self, server):
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" do the work of sending a TCP request "
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self.response=None
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for self.ns in server:
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try:
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self.socketInit(socket.AF_INET, socket.SOCK_STREAM)
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self.time_start=time.time()
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self.conn()
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self.s.send(Lib.pack16bit(len(self.request))+self.request)
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self.s.shutdown(1)
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self.response=self.processTCPReply()
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except socket.error:
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continue
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break
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if not self.response:
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raise DNSError,'no working nameservers found'
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class DnsAsyncRequest (DnsRequest, asyncore.dispatcher_with_send):
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" an asynchronous request object. out of date, probably broken "
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def __init__ (self,*name,**args):
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DnsRequest.__init__(self, *name, **args)
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asyncore.dispatcher_with_send.__init__(self, *name, **args)
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# XXX todo
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if args.has_key('done') and args['done']:
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self.donefunc = args['done']
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else:
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self.donefunc=self.showResult
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#self.realinit(name,args) # XXX todo
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self.async=1
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def conn (self):
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self.connect((self.ns,self.port))
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self.time_start=time.time()
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if self.args.has_key('start') and self.args['start']:
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asyncore.dispatcher.go(self)
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def socketInit (self,a,b):
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self.create_socket(a,b)
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asyncore.dispatcher.__init__(self)
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self.s=self
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def handle_read (self):
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if self.args['protocol'] == 'udp':
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self.response=self.processUDPReply()
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if self.donefunc:
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self.donefunc(*self)
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def handle_connect (self):
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self.send(self.request)
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def handle_write (self):
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pass
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def showResult (self,*s):
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self.response.show()
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@ -1,34 +0,0 @@
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# -*- coding: iso-8859-1 -*-
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"""
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This file is part of the pydns project.
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Homepage: http://pydns.sourceforge.net
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This code is covered by the standard Python License.
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CLASS values (section 3.2.4)
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"""
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IN = 1 # the Internet
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CS = 2 # the CSNET class (Obsolete - used only for examples in
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# some obsolete RFCs)
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CH = 3 # the CHAOS class. When someone shows me python running on
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# a Symbolics Lisp machine, I'll look at implementing this.
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HS = 4 # Hesiod [Dyer 87]
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# QCLASS values (section 3.2.5)
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ANY = 255 # any class
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# Construct reverse mapping dictionary
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_classmap = {}
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for _name in dir():
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if not _name.startswith('_'):
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_classmap[eval(_name)] = _name
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def classstr (klass):
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"""return string representation of DNS class"""
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return _classmap.get(klass, repr(klass))
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@ -1,726 +0,0 @@
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# -*- coding: iso-8859-1 -*-
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"""
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This file is part of the pydns project.
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Homepage: http://pydns.sourceforge.net
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This code is covered by the standard Python License.
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Library code. Largely this is packers and unpackers for various types.
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"""
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#
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# See RFC 1035:
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# ------------------------------------------------------------------------
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# Network Working Group P. Mockapetris
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# Request for Comments: 1035 ISI
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# November 1987
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# Obsoletes: RFCs 882, 883, 973
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#
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# DOMAIN NAMES - IMPLEMENTATION AND SPECIFICATION
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# ------------------------------------------------------------------------
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import types
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import time
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import Type
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import Class
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import Opcode
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import Status
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class DNSError (Exception):
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"""basic DNS error class"""
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pass
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class UnpackError (DNSError):
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"""DNS packet unpacking error"""
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pass
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class PackError (DNSError):
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"""DNS packet packing error"""
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pass
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# Low-level 16 and 32 bit integer packing and unpacking
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from struct import pack as struct_pack
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from struct import unpack as struct_unpack
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def pack16bit (n):
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return struct_pack('!H', n)
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def pack32bit (n):
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return struct_pack('!L', n)
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def pack128bit (n):
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return struct_pack('!LLLL', n)
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def unpack16bit (s):
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return struct_unpack('!H', s)[0]
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def unpack32bit (s):
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return struct_unpack('!L', s)[0]
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def unpack128bit (s):
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return struct_unpack('!LLLL', s)[0]
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def addr2bin (addr):
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if type(addr) == type(0):
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return addr
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bytes = addr.split('.')
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if len(bytes) != 4: raise ValueError, 'bad IP address'
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n = 0L
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for byte in bytes:
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n = n<<8 | int(byte)
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return n
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def bin2addr (n):
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return '%d.%d.%d.%d' % ((n>>24)&0xFF, (n>>16)&0xFF,
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(n>>8)&0xFF, n&0xFF)
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||||
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||||
|
||||
# Packing class
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||||
|
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class Packer (object):
|
||||
" packer base class. supports basic byte/16bit/32bit/addr/string/name "
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||||
def __init__ (self):
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||||
self.buf = ''
|
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self.index = {}
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||||
|
||||
|
||||
def getbuf (self):
|
||||
return self.buf
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||||
|
||||
|
||||
def addbyte (self, c):
|
||||
if len(c) != 1: raise TypeError, 'one character expected'
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self.buf += c
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|
||||
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||||
def addbytes (self, bytes):
|
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self.buf += bytes
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||||
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||||
|
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def add16bit (self, n):
|
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self.buf += pack16bit(n)
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||||
|
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|
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def add32bit (self, n):
|
||||
self.buf += pack32bit(n)
|
||||
|
||||
|
||||
def addaddr (self, addr):
|
||||
n = addr2bin(addr)
|
||||
self.buf += pack32bit(n)
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||||
|
||||
|
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def addaddr6 (self, addr):
|
||||
n = addr2bin(addr)
|
||||
self.buf += pack128bit(n)
|
||||
|
||||
|
||||
def addstring (self, s):
|
||||
if len(s) > 255:
|
||||
raise ValueError, "Can't encode string of length "+ \
|
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"%s (> 255)"%(len(s))
|
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self.addbyte(chr(len(s)))
|
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self.addbytes(s)
|
||||
|
||||
|
||||
def addname (self, name):
|
||||
"""Domain name packing (section 4.1.4)
|
||||
Add a domain name to the buffer, possibly using pointers.
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The case of the first occurrence of a name is preserved.
|
||||
Redundant dots are ignored.
|
||||
"""
|
||||
lst = []
|
||||
for label in name.split('.'):
|
||||
if label:
|
||||
if len(label) > 63:
|
||||
raise PackError, 'label too long'
|
||||
lst.append(label)
|
||||
keys = []
|
||||
for i in range(len(lst)):
|
||||
key = '.'.join(lst[i:]).upper()
|
||||
keys.append(key)
|
||||
if self.index.has_key(key):
|
||||
pointer = self.index[key]
|
||||
break
|
||||
else:
|
||||
i = len(lst)
|
||||
pointer = None
|
||||
# Do it into temporaries first so exceptions don't
|
||||
# mess up self.index and self.buf
|
||||
buf = ''
|
||||
offset = len(self.buf)
|
||||
index = []
|
||||
for j in range(i):
|
||||
label = lst[j]
|
||||
n = len(label)
|
||||
if offset + len(buf) < 0x3FFF:
|
||||
index.append((keys[j], offset + len(buf)))
|
||||
else:
|
||||
print 'DNS.Lib.Packer.addname:',
|
||||
print 'warning: pointer too big'
|
||||
buf += (chr(n) + label)
|
||||
if pointer:
|
||||
buf += pack16bit(pointer | 0xC000)
|
||||
else:
|
||||
buf += '\0'
|
||||
self.buf += buf
|
||||
for key, value in index:
|
||||
self.index[key] = value
|
||||
|
||||
|
||||
def dump (self):
|
||||
"""print string dump of packer data"""
|
||||
keys = self.index.keys()
|
||||
keys.sort()
|
||||
print '-'*40
|
||||
for key in keys:
|
||||
print '%20s %3d' % (key, self.index[key])
|
||||
print '-'*40
|
||||
space = 1
|
||||
for i in range(0, len(self.buf)+1, 2):
|
||||
if self.buf[i:i+2] == '**':
|
||||
if not space: print
|
||||
space = 1
|
||||
continue
|
||||
space = 0
|
||||
print '%4d' % i,
|
||||
for c in self.buf[i:i+2]:
|
||||
if ' ' < c < '\177':
|
||||
print ' %c' % c,
|
||||
else:
|
||||
print '%2d' % ord(c),
|
||||
print
|
||||
print '-'*40
|
||||
|
||||
|
||||
# Unpacking class
|
||||
|
||||
|
||||
class Unpacker (object):
|
||||
|
||||
def __init__ (self, buf):
|
||||
self.buf = buf
|
||||
self.offset = 0
|
||||
|
||||
|
||||
def getbyte (self):
|
||||
if self.offset > len(self.buf):
|
||||
raise UnpackError, "Ran off end of data"
|
||||
c = self.buf[self.offset]
|
||||
self.offset += 1
|
||||
return c
|
||||
|
||||
|
||||
def getbytes (self, n):
|
||||
s = self.buf[self.offset : self.offset + n]
|
||||
if len(s) != n: raise UnpackError, 'not enough data left'
|
||||
self.offset +=n
|
||||
return s
|
||||
|
||||
|
||||
def get16bit (self):
|
||||
return unpack16bit(self.getbytes(2))
|
||||
|
||||
|
||||
def get32bit (self):
|
||||
return unpack32bit(self.getbytes(4))
|
||||
|
||||
|
||||
def get128bit (self):
|
||||
return unpack128bit(self.getbytes(16))
|
||||
|
||||
|
||||
def getaddr (self):
|
||||
return bin2addr(self.get32bit())
|
||||
|
||||
|
||||
def getaddr6 (self):
|
||||
return bin2addr(self.get128bit())
|
||||
|
||||
|
||||
def getstring (self):
|
||||
return self.getbytes(ord(self.getbyte()))
|
||||
|
||||
|
||||
def getname (self):
|
||||
# Domain name unpacking (section 4.1.4)
|
||||
c = self.getbyte()
|
||||
i = ord(c)
|
||||
if i & 0xC0 == 0xC0:
|
||||
d = self.getbyte()
|
||||
j = ord(d)
|
||||
pointer = ((i<<8) | j) & ~0xC000
|
||||
save_offset = self.offset
|
||||
try:
|
||||
self.offset = pointer
|
||||
domain = self.getname()
|
||||
finally:
|
||||
self.offset = save_offset
|
||||
return domain
|
||||
if i == 0:
|
||||
return ''
|
||||
domain = self.getbytes(i)
|
||||
remains = self.getname()
|
||||
if not remains:
|
||||
return domain
|
||||
else:
|
||||
return domain + '.' + remains
|
||||
|
||||
|
||||
# Pack/unpack RR toplevel format (section 3.2.1)
|
||||
|
||||
class RRpacker (Packer):
|
||||
|
||||
def __init__ (self):
|
||||
Packer.__init__(self)
|
||||
self.rdstart = None
|
||||
|
||||
|
||||
def addRRheader (self, name, type, klass, ttl, *rest):
|
||||
self.addname(name)
|
||||
self.add16bit(type)
|
||||
self.add16bit(klass)
|
||||
self.add32bit(ttl)
|
||||
if rest:
|
||||
if rest[1:]: raise TypeError, 'too many args'
|
||||
rdlength = rest[0]
|
||||
else:
|
||||
rdlength = 0
|
||||
self.add16bit(rdlength)
|
||||
self.rdstart = len(self.buf)
|
||||
|
||||
|
||||
def patchrdlength (self):
|
||||
rdlength = unpack16bit(self.buf[self.rdstart-2:self.rdstart])
|
||||
if rdlength == len(self.buf) - self.rdstart:
|
||||
return
|
||||
rdata = self.buf[self.rdstart:]
|
||||
save_buf = self.buf
|
||||
ok = 0
|
||||
try:
|
||||
self.buf = self.buf[:self.rdstart-2]
|
||||
self.add16bit(len(rdata))
|
||||
self.buf = self.buf + rdata
|
||||
ok = 1
|
||||
finally:
|
||||
if not ok: self.buf = save_buf
|
||||
|
||||
|
||||
def endRR (self):
|
||||
if self.rdstart is not None:
|
||||
self.patchrdlength()
|
||||
self.rdstart = None
|
||||
|
||||
|
||||
def getbuf (self):
|
||||
if self.rdstart is not None: self.patchrdlength()
|
||||
return Packer.getbuf(self)
|
||||
# Standard RRs (section 3.3)
|
||||
|
||||
|
||||
def addCNAME (self, name, klass, ttl, cname):
|
||||
self.addRRheader(name, Type.CNAME, klass, ttl)
|
||||
self.addname(cname)
|
||||
self.endRR()
|
||||
|
||||
|
||||
def addHINFO (self, name, klass, ttl, cpu, os):
|
||||
self.addRRheader(name, Type.HINFO, klass, ttl)
|
||||
self.addstring(cpu)
|
||||
self.addstring(os)
|
||||
self.endRR()
|
||||
|
||||
|
||||
def addMX (self, name, klass, ttl, preference, exchange):
|
||||
self.addRRheader(name, Type.MX, klass, ttl)
|
||||
self.add16bit(preference)
|
||||
self.addname(exchange)
|
||||
self.endRR()
|
||||
|
||||
|
||||
def addNS (self, name, klass, ttl, nsdname):
|
||||
self.addRRheader(name, Type.NS, klass, ttl)
|
||||
self.addname(nsdname)
|
||||
self.endRR()
|
||||
|
||||
|
||||
def addPTR (self, name, klass, ttl, ptrdname):
|
||||
self.addRRheader(name, Type.PTR, klass, ttl)
|
||||
self.addname(ptrdname)
|
||||
self.endRR()
|
||||
|
||||
|
||||
def addSOA (self, name, klass, ttl,
|
||||
mname, rname, serial, refresh, retry, expire, minimum):
|
||||
self.addRRheader(name, Type.SOA, klass, ttl)
|
||||
self.addname(mname)
|
||||
self.addname(rname)
|
||||
self.add32bit(serial)
|
||||
self.add32bit(refresh)
|
||||
self.add32bit(retry)
|
||||
self.add32bit(expire)
|
||||
self.add32bit(minimum)
|
||||
self.endRR()
|
||||
|
||||
|
||||
def addTXT (self, name, klass, ttl, lst):
|
||||
self.addRRheader(name, Type.TXT, klass, ttl)
|
||||
if type(lst) is types.StringType:
|
||||
lst = [lst]
|
||||
for txtdata in lst:
|
||||
self.addstring(txtdata)
|
||||
self.endRR()
|
||||
# Internet specific RRs (section 3.4) -- class = IN
|
||||
|
||||
|
||||
def addA (self, name, klass, ttl, address):
|
||||
self.addRRheader(name, Type.A, klass, ttl)
|
||||
self.addaddr(address)
|
||||
self.endRR()
|
||||
|
||||
|
||||
def addAAAA (self, name, klass, ttl, address):
|
||||
self.addRRheader(name, Type.A, klass, ttl)
|
||||
self.addaddr6(address)
|
||||
self.endRR()
|
||||
|
||||
|
||||
def addWKS (self, name, ttl, address, protocol, bitmap):
|
||||
self.addRRheader(name, Type.WKS, Class.IN, ttl)
|
||||
self.addaddr(address)
|
||||
self.addbyte(chr(protocol))
|
||||
self.addbytes(bitmap)
|
||||
self.endRR()
|
||||
|
||||
|
||||
def addSRV (self):
|
||||
raise NotImplementedError
|
||||
|
||||
|
||||
def prettyTime (seconds):
|
||||
|
||||
if seconds<60:
|
||||
return seconds,"%d seconds"%(seconds)
|
||||
if seconds<3600:
|
||||
return seconds,"%d minutes"%(seconds/60)
|
||||
if seconds<86400:
|
||||
return seconds,"%d hours"%(seconds/3600)
|
||||
if seconds<604800:
|
||||
return seconds,"%d days"%(seconds/86400)
|
||||
else:
|
||||
return seconds,"%d weeks"%(seconds/604800)
|
||||
|
||||
|
||||
class RRunpacker (Unpacker):
|
||||
|
||||
def __init__ (self, buf):
|
||||
Unpacker.__init__(self, buf)
|
||||
self.rdend = None
|
||||
|
||||
|
||||
def getRRheader (self):
|
||||
name = self.getname()
|
||||
rrtype = self.get16bit()
|
||||
klass = self.get16bit()
|
||||
ttl = self.get32bit()
|
||||
rdlength = self.get16bit()
|
||||
self.rdend = self.offset + rdlength
|
||||
return (name, rrtype, klass, ttl, rdlength)
|
||||
|
||||
|
||||
def endRR (self):
|
||||
if self.offset != self.rdend:
|
||||
raise UnpackError, 'end of RR not reached'
|
||||
|
||||
|
||||
def getCNAMEdata (self):
|
||||
return self.getname()
|
||||
|
||||
|
||||
def getHINFOdata (self):
|
||||
return self.getstring(), self.getstring()
|
||||
|
||||
|
||||
def getMXdata (self):
|
||||
return self.get16bit(), self.getname()
|
||||
|
||||
|
||||
def getNSdata (self):
|
||||
return self.getname()
|
||||
|
||||
|
||||
def getPTRdata (self):
|
||||
return self.getname()
|
||||
|
||||
|
||||
def getSOAdata (self):
|
||||
return self.getname(), \
|
||||
self.getname(), \
|
||||
('serial',)+(self.get32bit(),), \
|
||||
('refresh ',)+prettyTime(self.get32bit()), \
|
||||
('retry',)+prettyTime(self.get32bit()), \
|
||||
('expire',)+prettyTime(self.get32bit()), \
|
||||
('minimum',)+prettyTime(self.get32bit())
|
||||
|
||||
|
||||
def getTXTdata (self):
|
||||
lst = []
|
||||
while self.offset != self.rdend:
|
||||
lst.append(self.getstring())
|
||||
return lst
|
||||
|
||||
|
||||
def getAdata (self):
|
||||
return self.getaddr()
|
||||
|
||||
|
||||
def getAAAAdata (self):
|
||||
return self.getaddr6()
|
||||
|
||||
|
||||
def getWKSdata (self):
|
||||
address = self.getaddr()
|
||||
protocol = ord(self.getbyte())
|
||||
bitmap = self.getbytes(self.rdend - self.offset)
|
||||
return address, protocol, bitmap
|
||||
|
||||
|
||||
def getSRVdata (self):
|
||||
"""
|
||||
_Service._Proto.Name TTL Class SRV Priority Weight Port Target
|
||||
"""
|
||||
priority = self.get16bit()
|
||||
weight = self.get16bit()
|
||||
port = self.get16bit()
|
||||
target = self.getname()
|
||||
#print '***priority, weight, port, target', priority, weight, port, target
|
||||
return priority, weight, port, target
|
||||
|
||||
|
||||
# Pack/unpack Message Header (section 4.1)
|
||||
|
||||
class Hpacker (Packer):
|
||||
|
||||
def addHeader (self, rid, qr, opcode, aa, tc, rd, ra, z, rcode,
|
||||
qdcount, ancount, nscount, arcount):
|
||||
self.add16bit(rid)
|
||||
self.add16bit((qr&1)<<15 | (opcode&0xF)<<11 | (aa&1)<<10
|
||||
| (tc&1)<<9 | (rd&1)<<8 | (ra&1)<<7
|
||||
| (z&7)<<4 | (rcode&0xF))
|
||||
self.add16bit(qdcount)
|
||||
self.add16bit(ancount)
|
||||
self.add16bit(nscount)
|
||||
self.add16bit(arcount)
|
||||
|
||||
|
||||
class Hunpacker (Unpacker):
|
||||
|
||||
def getHeader (self):
|
||||
rid = self.get16bit()
|
||||
flags = self.get16bit()
|
||||
qr, opcode, aa, tc, rd, ra, z, rcode = (
|
||||
(flags>>15)&1,
|
||||
(flags>>11)&0xF,
|
||||
(flags>>10)&1,
|
||||
(flags>>9)&1,
|
||||
(flags>>8)&1,
|
||||
(flags>>7)&1,
|
||||
(flags>>4)&7,
|
||||
(flags>>0)&0xF)
|
||||
qdcount = self.get16bit()
|
||||
ancount = self.get16bit()
|
||||
nscount = self.get16bit()
|
||||
arcount = self.get16bit()
|
||||
return (rid, qr, opcode, aa, tc, rd, ra, z, rcode,
|
||||
qdcount, ancount, nscount, arcount)
|
||||
|
||||
|
||||
# Pack/unpack Question (section 4.1.2)
|
||||
|
||||
class Qpacker (Packer):
|
||||
|
||||
def addQuestion (self, qname, qtype, qclass):
|
||||
self.addname(qname)
|
||||
self.add16bit(qtype)
|
||||
self.add16bit(qclass)
|
||||
|
||||
|
||||
class Qunpacker (Unpacker):
|
||||
|
||||
def getQuestion (self):
|
||||
return self.getname(), self.get16bit(), self.get16bit()
|
||||
|
||||
|
||||
# Pack/unpack Message(section 4)
|
||||
# NB the order of the base classes is important for __init__()!
|
||||
|
||||
class Mpacker (RRpacker, Qpacker, Hpacker):
|
||||
pass
|
||||
|
||||
|
||||
class Munpacker (RRunpacker, Qunpacker, Hunpacker):
|
||||
pass
|
||||
|
||||
|
||||
# Routines to print an unpacker to stdout, for debugging.
|
||||
# These affect the unpacker's current position!
|
||||
|
||||
def dumpM (u):
|
||||
print 'HEADER:',
|
||||
(id, qr, opcode, aa, tc, rd, ra, z, rcode,
|
||||
qdcount, ancount, nscount, arcount) = u.getHeader()
|
||||
print 'id=%d,' % id,
|
||||
print 'qr=%d, opcode=%d, aa=%d, tc=%d, rd=%d, ra=%d, z=%d, rcode=%d,' \
|
||||
% (qr, opcode, aa, tc, rd, ra, z, rcode)
|
||||
if tc: print '*** response truncated! ***'
|
||||
if rcode: print '*** nonzero error code! (%d) ***' % rcode
|
||||
print ' qdcount=%d, ancount=%d, nscount=%d, arcount=%d' \
|
||||
% (qdcount, ancount, nscount, arcount)
|
||||
for i in range(qdcount):
|
||||
print 'QUESTION %d:' % i,
|
||||
dumpQ(u)
|
||||
for i in range(ancount):
|
||||
print 'ANSWER %d:' % i,
|
||||
dumpRR(u)
|
||||
for i in range(nscount):
|
||||
print 'AUTHORITY RECORD %d:' % i,
|
||||
dumpRR(u)
|
||||
for i in range(arcount):
|
||||
print 'ADDITIONAL RECORD %d:' % i,
|
||||
dumpRR(u)
|
||||
|
||||
|
||||
class DnsResult (object):
|
||||
|
||||
def __init__ (self,u,args):
|
||||
self.header={}
|
||||
self.questions=[]
|
||||
self.answers=[]
|
||||
self.authority=[]
|
||||
self.additional=[]
|
||||
self.args=args
|
||||
self.storeM(u)
|
||||
|
||||
def show (self):
|
||||
print '; <<>> PDG.py 1.0 <<>> %s %s'%(self.args['name'],
|
||||
self.args['qtype'])
|
||||
opt=""
|
||||
if self.args['rd']:
|
||||
opt=opt+'recurs '
|
||||
h=self.header
|
||||
print ';; options: '+opt
|
||||
print ';; got answer:'
|
||||
print ';; ->>HEADER<<- opcode %s, status %s, id %d'%(
|
||||
h['opcode'],h['status'],h['id'])
|
||||
flags=filter(lambda x,h=h:h[x],('qr','aa','rd','ra','tc'))
|
||||
print ';; flags: %s; Ques: %d, Ans: %d, Auth: %d, Addit: %d'%(
|
||||
''.join(flags),h['qdcount'],h['ancount'],h['nscount'],
|
||||
h['arcount'])
|
||||
print ';; QUESTIONS:'
|
||||
for q in self.questions:
|
||||
print ';; %s, type = %s, class = %s'%(q['qname'],q['qtypestr'],
|
||||
q['qclassstr'])
|
||||
print
|
||||
print ';; ANSWERS:'
|
||||
for a in self.answers:
|
||||
print '%-20s %-6r %-6s %s'%(a['name'],a['ttl'],a['typename'],
|
||||
a['data'])
|
||||
print
|
||||
print ';; AUTHORITY RECORDS:'
|
||||
for a in self.authority:
|
||||
print '%-20s %-6r %-6s %s'%(a['name'],a['ttl'],a['typename'],
|
||||
a['data'])
|
||||
print
|
||||
print ';; ADDITIONAL RECORDS:'
|
||||
for a in self.additional:
|
||||
print '%-20s %-6r %-6s %s'%(a['name'],a['ttl'],a['typename'],
|
||||
a['data'])
|
||||
print
|
||||
if self.args.has_key('elapsed'):
|
||||
print ';; Total query time: %d msec'%self.args['elapsed']
|
||||
print ';; To SERVER: %s'%(self.args['server'])
|
||||
print ';; WHEN: %s'%time.ctime(time.time())
|
||||
|
||||
def storeM (self,u):
|
||||
(self.header['id'], self.header['qr'], self.header['opcode'],
|
||||
self.header['aa'], self.header['tc'], self.header['rd'],
|
||||
self.header['ra'], self.header['z'], self.header['rcode'],
|
||||
self.header['qdcount'], self.header['ancount'],
|
||||
self.header['nscount'], self.header['arcount']) = u.getHeader()
|
||||
self.header['opcodestr']=Opcode.opcodestr(self.header['opcode'])
|
||||
self.header['status']=Status.statusstr(self.header['rcode'])
|
||||
for i in range(self.header['qdcount']):
|
||||
#print 'QUESTION %d:' % i,
|
||||
self.questions.append(self.storeQ(u))
|
||||
for i in range(self.header['ancount']):
|
||||
#print 'ANSWER %d:' % i,
|
||||
self.answers.append(self.storeRR(u))
|
||||
for i in range(self.header['nscount']):
|
||||
#print 'AUTHORITY RECORD %d:' % i,
|
||||
self.authority.append(self.storeRR(u))
|
||||
for i in range(self.header['arcount']):
|
||||
#print 'ADDITIONAL RECORD %d:' % i,
|
||||
self.additional.append(self.storeRR(u))
|
||||
|
||||
def storeQ (self,u):
|
||||
q={}
|
||||
q['qname'], q['qtype'], q['qclass'] = u.getQuestion()
|
||||
q['qtypestr']=Type.typestr(q['qtype'])
|
||||
q['qclassstr']=Class.classstr(q['qclass'])
|
||||
return q
|
||||
|
||||
def storeRR (self,u):
|
||||
r={}
|
||||
r['name'],r['type'],r['class'],r['ttl'],r['rdlength'] = u.getRRheader()
|
||||
r['typename'] = Type.typestr(r['type'])
|
||||
r['classstr'] = Class.classstr(r['class'])
|
||||
#print 'name=%s, type=%d(%s), class=%d(%s), ttl=%d' \
|
||||
# % (name,
|
||||
# type, typename,
|
||||
# klass, Class.classstr(class),
|
||||
# ttl)
|
||||
mname = 'get%sdata' % r['typename']
|
||||
if hasattr(u, mname):
|
||||
r['data']=getattr(u, mname)()
|
||||
else:
|
||||
r['data']=u.getbytes(r['rdlength'])
|
||||
return r
|
||||
|
||||
|
||||
def dumpQ (u):
|
||||
qname, qtype, qclass = u.getQuestion()
|
||||
print 'qname=%s, qtype=%d(%s), qclass=%d(%s)' \
|
||||
% (qname,
|
||||
qtype, Type.typestr(qtype),
|
||||
qclass, Class.classstr(qclass))
|
||||
|
||||
|
||||
def dumpRR (u):
|
||||
name, type, klass, ttl, rdlength = u.getRRheader()
|
||||
typename = Type.typestr(type)
|
||||
print 'name=%s, type=%d(%s), class=%d(%s), ttl=%d' \
|
||||
% (name,
|
||||
type, typename,
|
||||
klass, Class.classstr(klass),
|
||||
ttl)
|
||||
mname = 'get%sdata' % typename
|
||||
if hasattr(u, mname):
|
||||
print ' formatted rdata:', getattr(u, mname)()
|
||||
else:
|
||||
print ' binary rdata:', u.getbytes(rdlength)
|
||||
|
||||
|
|
@ -1,29 +0,0 @@
|
|||
# -*- coding: iso-8859-1 -*-
|
||||
"""
|
||||
This file is part of the pydns project.
|
||||
Homepage: http://pydns.sourceforge.net
|
||||
|
||||
This code is covered by the standard Python License.
|
||||
|
||||
Opcode values in message header. RFC 1035, 1996, 2136.
|
||||
"""
|
||||
|
||||
|
||||
|
||||
QUERY = 0
|
||||
IQUERY = 1
|
||||
STATUS = 2
|
||||
NOTIFY = 4
|
||||
UPDATE = 5
|
||||
|
||||
# Construct reverse mapping dictionary
|
||||
|
||||
_opcodemap = {}
|
||||
for _name in dir():
|
||||
if not _name.startswith('_'):
|
||||
_opcodemap[eval(_name)] = _name
|
||||
|
||||
def opcodestr (opcode):
|
||||
"""return string representation of DNS opcode"""
|
||||
return _opcodemap.get(opcode, repr(opcode))
|
||||
|
||||
|
|
@ -1,40 +0,0 @@
|
|||
# -*- coding: iso-8859-1 -*-
|
||||
"""
|
||||
This file is part of the pydns project.
|
||||
Homepage: http://pydns.sourceforge.net
|
||||
|
||||
This code is covered by the standard Python License.
|
||||
|
||||
Status values in message header
|
||||
"""
|
||||
|
||||
NOERROR = 0 # No Error [RFC 1035]
|
||||
FORMERR = 1 # Format Error [RFC 1035]
|
||||
SERVFAIL = 2 # Server Failure [RFC 1035]
|
||||
NXDOMAIN = 3 # Non-Existent Domain [RFC 1035]
|
||||
NOTIMP = 4 # Not Implemented [RFC 1035]
|
||||
REFUSED = 5 # Query Refused [RFC 1035]
|
||||
YXDOMAIN = 6 # Name Exists when it should not [RFC 2136]
|
||||
YXRRSET = 7 # RR Set Exists when it should not [RFC 2136]
|
||||
NXRRSET = 8 # RR Set that should exist does not [RFC 2136]
|
||||
NOTAUTH = 9 # Server Not Authoritative for zone [RFC 2136]
|
||||
NOTZONE = 10 # Name not contained in zone [RFC 2136]
|
||||
BADVERS = 16 # Bad OPT Version [RFC 2671]
|
||||
BADSIG = 16 # TSIG Signature Failure [RFC 2845]
|
||||
BADKEY = 17 # Key not recognized [RFC 2845]
|
||||
BADTIME = 18 # Signature out of time window [RFC 2845]
|
||||
BADMODE = 19 # Bad TKEY Mode [RFC 2930]
|
||||
BADNAME = 20 # Duplicate key name [RFC 2930]
|
||||
BADALG = 21 # Algorithm not supported [RFC 2930]
|
||||
|
||||
# Construct reverse mapping dictionary
|
||||
|
||||
_statusmap = {}
|
||||
for _name in dir():
|
||||
if not _name.startswith('_'):
|
||||
_statusmap[eval(_name)] = _name
|
||||
|
||||
def statusstr (status):
|
||||
"""return string representation of DNS status"""
|
||||
return _statusmap.get(status, repr(status))
|
||||
|
||||
|
|
@ -1,52 +0,0 @@
|
|||
# -*- coding: iso-8859-1 -*-
|
||||
"""
|
||||
This file is part of the pydns project.
|
||||
Homepage: http://pydns.sourceforge.net
|
||||
|
||||
This code is covered by the standard Python License.
|
||||
|
||||
TYPE values (section 3.2.2)
|
||||
"""
|
||||
|
||||
A = 1 # a host address
|
||||
NS = 2 # an authoritative name server
|
||||
MD = 3 # a mail destination (Obsolete - use MX)
|
||||
MF = 4 # a mail forwarder (Obsolete - use MX)
|
||||
CNAME = 5 # the canonical name for an alias
|
||||
SOA = 6 # marks the start of a zone of authority
|
||||
MB = 7 # a mailbox domain name (EXPERIMENTAL)
|
||||
MG = 8 # a mail group member (EXPERIMENTAL)
|
||||
MR = 9 # a mail rename domain name (EXPERIMENTAL)
|
||||
NULL = 10 # a null RR (EXPERIMENTAL)
|
||||
WKS = 11 # a well known service description
|
||||
PTR = 12 # a domain name pointer
|
||||
HINFO = 13 # host information
|
||||
MINFO = 14 # mailbox or mail list information
|
||||
MX = 15 # mail exchange
|
||||
TXT = 16 # text strings
|
||||
AAAA = 28 # IPv6 AAAA records (RFC 1886)
|
||||
SRV = 33 # DNS RR for specifying the location of services (RFC 2782)
|
||||
|
||||
|
||||
# Additional TYPE values from host.c source
|
||||
|
||||
UNAME = 110
|
||||
MP = 240
|
||||
|
||||
# QTYPE values (section 3.2.3)
|
||||
|
||||
AXFR = 252 # A request for a transfer of an entire zone
|
||||
MAILB = 253 # A request for mailbox-related records (MB, MG or MR)
|
||||
MAILA = 254 # A request for mail agent RRs (Obsolete - see MX)
|
||||
ANY = 255 # A request for all records
|
||||
|
||||
# Construct reverse mapping dictionary
|
||||
|
||||
_typemap = {}
|
||||
for _name in dir():
|
||||
if not _name.startswith('_'):
|
||||
_typemap[eval(_name)] = _name
|
||||
|
||||
def typestr (dnstype):
|
||||
"""return string representation of DNS type"""
|
||||
return _typemap.get(dnstype, repr(dnstype))
|
||||
|
|
@ -1,9 +0,0 @@
|
|||
# -*- coding: iso-8859-1 -*-
|
||||
#
|
||||
# This file is part of the pydns project.
|
||||
# Homepage: http://pydns.sourceforge.net
|
||||
#
|
||||
# This code is covered by the standard Python License.
|
||||
#
|
||||
"""Python DNS module"""
|
||||
|
||||
|
|
@ -1,28 +0,0 @@
|
|||
# -*- coding: iso-8859-1 -*-
|
||||
#
|
||||
# This file is part of the pydns project.
|
||||
# Homepage: http://pydns.sourceforge.net
|
||||
#
|
||||
# This code is covered by the standard Python License.
|
||||
#
|
||||
"""routines for lazy people."""
|
||||
|
||||
import Base
|
||||
|
||||
def revlookup (name, config):
|
||||
"convenience routine for doing a reverse lookup of an address"
|
||||
a = name.split('.')
|
||||
a.reverse()
|
||||
b = '.'.join(a)+'.in-addr.arpa'
|
||||
# this will only return one of any records returned.
|
||||
return Base.DnsRequest(b, config, qtype='ptr').req().answers[0]['data']
|
||||
|
||||
def mxlookup (name, config):
|
||||
"""
|
||||
convenience routine for doing an MX lookup of a name. returns a
|
||||
sorted list of (preference, mail exchanger) records
|
||||
"""
|
||||
a = Base.DnsRequest(name, config, qtype='mx').req().answers
|
||||
l = map(lambda x:x['data'], a)
|
||||
l.sort()
|
||||
return l
|
||||
Loading…
Reference in a new issue