On Jun 20, 2013, at 12:52 PM, Ben Greear <[email protected]> wrote:
> I'm trying to upgrade from an older (OEM) winpcap to winpcap OME 4.1.2.
>
> I have been using code like this:
>
> oid->Oid = OID_GEN_MEDIA_CONNECT_STATUS;
> oid->Length = 1024 - (sizeof(oid->Oid) - sizeof(oid->Length));
> if (PacketRequest(np->adapter, false, oid)) {
>
> But, it seems that the 'struct pcap' is no longer defined anywhere,
> and I cannot find anything equivalent to get the adapter.
>
> Anyone have any ideas?
I would suggest writing a pcap_get_adapter() routine:
/*
* XXX - "struct pcap" is not guaranteed to look the same from
* release to release, so use this only with current releases;
* if it changes, the future release should include a pcap_get_adapter()
* routine that will return the ADAPTER regardless of the layout of
* the structure.
*/
struct pcap_internal {
ADAPTER *adapter;
};
ADAPTER *
pcap_get_adapter(pcap_t *p)
{
struct pcap_internal *p_int = (struct pcap_internal *)(void *)p;
return (p->adapter);
}
and be prepared for a future release perhaps 1) having the "adapter" member at
a different offset in the pcap_t structure (which is opaque outside
libpcap/WinPcap, and subject to change from release to release) and 2)
providing a pcap_get_adapter() routine. (See libpcap checkins
e9e96bbc3efd45ba6d1dbb097bc09845ba54c5d6 and
2933fb0ae763f9463eb904ed6ddf0a033b6ba635; some future WinPcap release might
pick up a newer libpcap version, but there's a fair bit of libpcap work needed
to make that happen, so that remote capture is still available.)
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