Re: py-libpcap vs MacOSX 10.4

On Aug 28, 2005, at 11:42 AM, Olivier Warin wrote:

> Hello,
> I have got a problem when trying to use py-libpcap with MacOSX 10.4.2
> pylibpcap does not compile with python2.4 from fink, whereas  
> pylibpcap0.4 (not 0.5 !) works with the python2.3 from Apple.
> I would appreciate that someone give me some advice on how to  
> compile py-libpcap against python2.4 found in fink.
> This way, it would be greatly easier and cleaner to use python  
> modules like gnuplot etc... in the scripts.
> Thanks
>                 /Olivier

I finally got around to trying scapy on my powerbook. The dnet  
install went as advertised.

To get the pcap wrapper to work I had to do the following:
 o Download pylibpcap from cvs. You need a few files that are not in  
the dist tarball. See their sourceforge page for instructions on how  
to get the cvs copy.
 o Install swig from darwinports. port install swig.
 o Edit pylibpcap's setup.py and change:

  def swig_sources(self, sources):
  to
  def swig_sources(self, sources, extension=None):

From there a python setup.py build python setup.py install (insert  
your favorite --prefix or --home flags here), and the import pcap  
succeeds.

I also put in the sys.version fix mentioned here http:// 
www.secdev.org/projects/scapy/portability.html
Unfortunately I'm now getting this error:

sr(IP())
Begin emission:
Traceback (most recent call last):
  File "<console>", line 1, in ?
WARNING: Unable to guess datalink type (interface=lo0 linktype=0).  
Using Ethernet
  File "/Users/tdoan/prebin/scapy-1.0.0.47.py", line 7478, in sr
    a,b,c=sndrcv(s,x,*args,**kargs)
  File "/Users/tdoan/prebin/scapy-1.0.0.47.py", line 7363, in sndrcv
    r = pks.nonblock_recv()
ERROR: --- Error in child 18810
Traceback (most recent call last):
  File "/Users/tdoan/prebin/scapy-1.0.0.47.py", line 7329, in sndrcv
    pks.send(p)
  File "/Users/tdoan/prebin/scapy-1.0.0.47.py", line 7106, in send
    ifs.send(str(Ether()/x))
  File "/Users/tdoan/prebin/scapy-1.0.0.47.py", line 3647, in __str__
    return self.__iter__().next().build()
  File "/Users/tdoan/prebin/scapy-1.0.0.47.py", line 3676, in build
    p = self.post_build(self.do_build())
  File "/Users/tdoan/prebin/scapy-1.0.0.47.py", line 3668, in do_build
    p = f.addfield(self, p, self.__getattr__(f))
  File "/Users/tdoan/prebin/scapy-1.0.0.47.py", line 3585, in  
__getattr__
    return i2h(self, fields[attr] )
  File "/Users/tdoan/prebin/scapy-1.0.0.47.py", line 2661, in i2h
    x=getmacbyip(dstip)
  File "/Users/tdoan/prebin/scapy-1.0.0.47.py", line 1859, in  
getmacbyip
    nofilter=1)
  File "/Users/tdoan/prebin/scapy-1.0.0.47.py", line 7505, in srp1
    a,b=srp(*args,**kargs)
  File "/Users/tdoan/prebin/scap  File "/Users/tdoan/prebin/ 
scapy-1.0.0.47.py", line 7129, in nonblock_recv
    p = self.recv()
  File "/Users/tdoan/prebin/scapy-1.0.0.47.py", line 7115, in recv
    pkt = self.ins.next()[1]
TypeError: unsubscriptable object
>>> y-1.0.0.47.py", line 7500, in srp
    a,b,c=sndrcv(conf.L2socket(iface=iface, filter=filter,  
nofilter=nofilter, type=type),x,*args,**kargs)
  File "/Users/tdoan/prebin/scapy-1.0.0.47.py", line 7363, in sndrcv
    r = pks.nonblock_recv()
  File "/Users/tdoan/prebin/scapy-1.0.0.47.py", line 7191, in  
nonblock_recv
    p = self.recv(MTU)
  File "/Users/tdoan/prebin/scapy-1.0.0.47.py", line 7177, in recv
    pkt = self.ins.next()[1]
TypeError: unsubscriptable object
INFO: more --- Error in child 18810

Anyone seen this before?

\T

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