120 lines
4.2 KiB
Python
120 lines
4.2 KiB
Python
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import os
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'''
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calc.py: Response packet logger
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Copyright (c) 2009, Zdenek Vasicek (vasicek AT fit.vutbr.cz)
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Marek Vavrusa (xvavru00 AT stud.fit.vutbr.cz)
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This software is open source.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions
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are met:
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* Redistributions of source code must retain the above copyright notice,
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this list of conditions and the following disclaimer.
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* Redistributions in binary form must reproduce the above copyright notice,
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this list of conditions and the following disclaimer in the documentation
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and/or other materials provided with the distribution.
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* Neither the name of the organization nor the names of its
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contributors may be used to endorse or promote products derived from this
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software without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE
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LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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POSSIBILITY OF SUCH DAMAGE.
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'''
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def dataHex(data, prefix=""):
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"""Converts binary string data to display representation form"""
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res = ""
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for i in range(0, (len(data)+15)/16):
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res += "%s0x%02X | " % (prefix, i*16)
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d = map(lambda x:ord(x), data[i*16:i*16+17])
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for ch in d:
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res += "%02X " % ch
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for i in range(0,17-len(d)):
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res += " "
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res += "| "
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for ch in d:
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if (ch < 32) or (ch > 127):
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res += ". "
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else:
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res += "%c " % ch
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res += "\n"
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return res
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def logDnsMsg(qstate):
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"""Logs response"""
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r = qstate.return_msg.rep
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q = qstate.return_msg.qinfo
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print "-"*100
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print("Query: %s, type: %s (%d), class: %s (%d) " % (
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qstate.qinfo.qname_str, qstate.qinfo.qtype_str, qstate.qinfo.qtype,
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qstate.qinfo.qclass_str, qstate.qinfo.qclass))
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print "-"*100
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print "Return reply :: flags: %04X, QDcount: %d, Security:%d, TTL=%d" % (r.flags, r.qdcount, r.security, r.ttl)
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print " qinfo :: qname: %s %s, qtype: %s, qclass: %s" % (str(q.qname_list), q.qname_str, q.qtype_str, q.qclass_str)
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if (r):
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print "Reply:"
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for i in range(0, r.rrset_count):
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rr = r.rrsets[i]
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rk = rr.rk
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print i,":",rk.dname_list, rk.dname_str, "flags: %04X" % rk.flags,
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print "type:",rk.type_str,"(%d)" % ntohs(rk.type), "class:",rk.rrset_class_str,"(%d)" % ntohs(rk.rrset_class)
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d = rr.entry.data
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for j in range(0,d.count+d.rrsig_count):
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print " ",j,":","TTL=",d.rr_ttl[j],
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if (j >= d.count): print "rrsig",
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print
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print dataHex(d.rr_data[j]," ")
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print "-"*100
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def init(id, cfg):
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log_info("pythonmod: init called, module id is %d port: %d script: %s" % (id, cfg.port, cfg.python_script))
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return True
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def deinit(id):
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log_info("pythonmod: deinit called, module id is %d" % id)
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return True
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def inform_super(id, qstate, superqstate, qdata):
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return True
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def operate(id, event, qstate, qdata):
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log_info("pythonmod: operate called, id: %d, event:%s" % (id, strmodulevent(event)))
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if (event == MODULE_EVENT_NEW) or (event == MODULE_EVENT_PASS):
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#Pass on the new event to the iterator
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qstate.ext_state[id] = MODULE_WAIT_MODULE
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return True
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if event == MODULE_EVENT_MODDONE:
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#Iterator finished, show response (if any)
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if (qstate.return_msg):
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logDnsMsg(qstate)
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qstate.ext_state[id] = MODULE_FINISHED
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return True
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qstate.ext_state[id] = MODULE_ERROR
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return True
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