I have a dissector that needs the capture file name at the time my dissector’s init function is called. I attempt to get the name with plugin_if_get_ws_info(…), not an unreasonable request I think you’ll agree, but unfortunately the filename
comes back as a NULL pointer.
I’ve traced through the code and this is what happens:
- We pass through the MainWindow signal and slot stuff and eventually call cf_open(…) in file.c with the filename as one of the parameters
- cf_open(…) opens the file to test the validity of the filename and then closes with cf_close(cf)
- cf_close(cf) frees the memory holding the filename and NULLs the filename pointer in the cf structure
- cf_open then creates a new epan session with ws_epan_new(cf)
- ws_epan_new(cf) calls epan_new() which calls init_dissection() and this is where eventually my dissector’s init function gets called
- My dissector calls plugin_if_get_ws_info(…) which attempts to get the filename info from the cf structure, which due to the above returns a NULL filename pointer
- Eventually we return back to cf_open(…) and a little later we set up the file name in the cf structure – all too late for my dissector’s init function
So my questions are:
- Can I raise this as a bug?
- If not, would a solution that made the filename available to plugin_if_get_ws_info(…) at init time be accepted?
- What would be an acceptable solution?
Thanks and regards…Paul
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