Wireshark-bugs: [Wireshark-bugs] [Bug 5509] Cannot open CommView for Wi-Fi 6.3.0.683 trace files
Date: Mon, 20 Dec 2010 15:17:32 -0800 (PST)
https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=5509

--- Comment #3 from Stephen Fisher <[email protected]> 2010-12-20 16:17:29 MST ---
Thanks for the report.  When I wrote the commview code for Wireshark, I made
the heuristics to see if it is a commview file very specific (perhaps too
specific) as you can see from this code snippet from wiretap/commview.c:

    /* If any of these fields do not match what we expect, bail out. */
    if(cv_hdr.version != 0 ||
       cv_hdr.year < 1970 || cv_hdr.year >= 2038 ||
       cv_hdr.month < 1 || cv_hdr.month > 12 ||
       cv_hdr.day < 1 || cv_hdr.day > 31 ||
       cv_hdr.hours > 23 ||
       cv_hdr.minutes > 59 ||
       cv_hdr.seconds > 60 ||
       cv_hdr.signal_level > 100 ||
       (cv_hdr.direction != 0x00 && cv_hdr.direction != 0x01 &&
        cv_hdr.direction != 0x02) ||
       (cv_hdr.flags & FLAGS_RESERVED) != 0 ||
       ((cv_hdr.flags & FLAGS_MEDIUM) != MEDIUM_ETHERNET &&
        (cv_hdr.flags & FLAGS_MEDIUM) != MEDIUM_WIFI &&
        (cv_hdr.flags & FLAGS_MEDIUM) != MEDIUM_TOKEN_RING) ||
       cv_hdr.reserved != 0)
        return 0; /* Not our kind of file */

I'll see if I can spot the change with a hex editor.

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