Wireshark mailing list archives
Re: Detecting capture file load finished in a C plugin
From: Guy Harris <guy () alum mit edu>
Date: Fri, 18 Dec 2015 10:59:16 -0800
On Dec 18, 2015, at 10:41 AM, Paul Offord <Paul.Offord () advance7 com> wrote:
I’m writing a Custom C Plugin. As a capture file is loaded, the callback dissect_plugin
I.e., the plugin is a dissector, rather than a handler for a type of capture file, or a statistical tap? (Yes, there's more than one type of plugin supported.)
is called for every packet loaded twice over.
That's probably a bug - one time should suffice when doing the initial read of the file - *BUT*: in TShark with the -2 flag, it will be called once for each packet in the second pass; in Wireshark, it will be called for packets when they're displayed, when they're selected, when a tap is run on them, etc.; so your dissector *must* be capable of handling being called multiple times - no exceptions.
Is there a way I can detect the completion of the load of the capture file?
If what you *really* need, in order to handle being called multiple times, is to know whether this is the first time the packet is being dissected, you can pass the pinfo pointer to the PINFO_FD_VISITED() macro, and if it returns "true", this is *not* the first time the packet is being dissected. ___________________________________________________________________________ Sent via: Wireshark-dev mailing list <wireshark-dev () wireshark org> Archives: https://www.wireshark.org/lists/wireshark-dev Unsubscribe: https://wireshark.org/mailman/options/wireshark-dev mailto:wireshark-dev-request () wireshark org?subject=unsubscribe
Current thread:
- Detecting capture file load finished in a C plugin Paul Offord (Dec 18)
- Re: Detecting capture file load finished in a C plugin Guy Harris (Dec 18)
- Re: Detecting capture file load finished in a C plugin Paul Offord (Dec 20)
- Re: Detecting capture file load finished in a C plugin Guy Harris (Dec 20)
- Re: Detecting capture file load finished in a C plugin Paul Offord (Dec 20)
- Re: Detecting capture file load finished in a C plugin Guy Harris (Dec 18)