Re: pcap_compile() causes a segmentation fault on Ubuntu

[Selçuk Cevher <cevhers () gmail com>]

The problem was with pcap_t* value - it was invalid.

I fixed it.

Thank you.

On Tue, Dec 14, 2010 at 1:46 PM, Guy Harris <guy () alum mit edu> wrote:

> On Dec 14, 2010, at 1:05 AM, Selçuk Cevher wrote:
>
> > If  you need to see the sources for listAllDevices() and
> openNetworkDevice()
> > as well, I can post them.
>
> I definitely need to see the source code for openNetworkDevice().
>  Presumably its first argument is a reference to a pcap_t *, but, if it
> returns a value, main() doesn't appear to check the value, so, if it fails
> to open any of the devices in the list for capturing, and thus has no pcap_t
> * value to set handle to, handle might not have a valid value, and thus
> pcap_compile() might crash.  (Perhaps it throws an exception if it fails to
> open any device.)
>
> > What may cause pcap_compile() to crash ?
>
> An invalid value for handle could cause it to crash.-
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