[Winpcap-users] pcap_freealldevs() causing program crash.

[Eric Hansen]

Well, I got my program to not crash (I put the freealldevs() at the very end
of my init function). But, now, the device names are "encrypted" (they show
up in weird characters now, unlike before when they showed up like they
should).

On 11/16/05, Gianluca Varenni <gianluca.varenni at cacetech.com> wrote:
>
> Well, there's no relationship between pcap_open and pcap_findalldevs
> (apart from the fact that you may have used the adapter names returned by
> pcap_findalldevs to open an adapter with pcap_open).
>  pcap_freealldevs should always be called (once) after a successful call
> to pcap_findalldevs.
>  Have a nice day
> GV
>
> ----- Original Message -----
> *From:* Eric Hansen <nightskywriter at gmail.com>
> *To:* winpcap-users at winpcap.org
> *Sent:* Wednesday, November 16, 2005 9:01 AM
> *Subject:* Re: [Winpcap-users] pcap_freealldevs() causing program crash.
>
> Yup :) I've debugged the pointer to, to make sure there wasn't something I
> wasn't catching otherwise. I think I found my problem though. What if I do
> not call pcap_open()? For example, if I don't call that, should I still be
> calling freealldevs()?
>
> On 11/16/05, Gianluca Varenni <gianluca.varenni at cacetech.com
> <gianluca.varenni at cacetech.com+>> wrote:
> >
> > Hi.
> >  Did you also check that you aren't calling CDevice::Cleanup multiple
> > times on the same "devs" pointer (thus trying to free the adapters list
> > multiple times)?
> >  Have a nice day
> > GV
> >
> >  ----- Original Message -----
> > *From:* Eric Hansen <nightskywriter at gmail.com>
> > *To:* WinPCap Mailing List <winpcap-users at winpcap.org>
> > *Sent:* Sunday, November 13, 2005 4:04 PM
> > *Subject:* [Winpcap-users] pcap_freealldevs() causing program crash.
> >
> > Does anyone know why, whenever I put in "pcap_freealldevs(devs);" into
> > my cleanup code (that frees all the memory, etc...that my program uses), it
> > always crashes?
> >
> > devs declaration:
> > pcap_if_t *devs, *d; // Device list
> >
> > My cleanup code:
> > void CDevice::Cleanup(){
> >
> > // Free the device list
> > pcap_freealldevs(devs);
> > }
> >
> > and how I'm using devs:
> > void CDevice::Devices(){
> > if(pcap_findalldevs(&devs, error) == -1){
> > AfxMessageBox(error);
> > } else{
> > for(iCount = 0, d = devs; d != NULL; d = d->next, iCount++){
> > if(d->description){
> > cDescription[iCount] = d->description;
> > }
> >
> > cDevice[iCount] = d->name;
> > }
> > }
> > }
> >
> > I've been racking my brain for over an hour trying to figure out what
> > I'm doing.
> >
> > (Note: I call Cleanup() in the WM_DESTROY Windows message)
> >
> > ------------------------------
> >
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> >
> >
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> >
> >
> >
>
>
> --
> http://tenshi.honeyblade.net (my poetry)
>
> "You wanted this ending to happen...ROMANTISUTO!"
>
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>
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--
http://tenshi.honeyblade.net (my poetry)

"You wanted this ending to happen...ROMANTISUTO!"
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