Wireshark mailing list archives
Re: How to disable lua support from command line ?
From: Peter Wu <peter () lekensteyn nl>
Date: Tue, 2 Jul 2019 19:29:40 +0200
On Tue, Jul 02, 2019 at 04:22:43PM +0900, Matt wrote:
Le mar. 2 juil. 2019 à 15:15, Guy Harris <guy () alum mit edu> a écrit :On Jul 1, 2019, at 8:34 PM, Matt <mattator () gmail com> wrote:I want my program to determistically run on other computers as well, thus I can't assume anything in advance about users' lua script. I had not really thought about compiled plugins but that's the same issue, these optional modules may alter the way my program expects tshark to behave.I.e., you want a "disable all user plugins" option.To sum up, yes. Might make sense to have a flag for lua and another for C modules or some kind of enum.
Explicitly disabling all customized config files via environment variables (see below) seems better than yet another option. Preferences such as TCP reassembly, Decode As settings, decryption keys, and so on can influence the dissection results.
I believe for my usecase, the best is to wrap the tshark call with an XDG_CONFIG_HOME pointing nowhere or to a vanilla wireshark config. Not sure if there is any difficulty though, I will have a try.As long as the "other computers" aren't running Windows, where XDG_CONFIG_HOME has no effect....
On Windows you can set the WIRESHARK_APPDATA environment variable. Since Wireshark 3.0 there is also the undocumented WIRESHARK_CONFIG_DIR which overrides WIRESHARK_APPDATA, $HOME, etc. Since your original question was about interference from a Lua script, I have some other suggestions: - Do not put the Lua script in your config dir. Manually start Wireshark with `wireshark -Xlua_script:foo.lua` or `tshark -Xlua_script:foo.lua` - If your script is only intended to be used with the Wireshark GUI as opposed to Tshark, disable it by prepending this snippet on top of your Lua script: if gui_enabled() then return end See https://www.wireshark.org/docs/wsdg_html_chunked/lua_module_Gui.html - Add a protocol preference to your dissector and use that to control whether the interfering functionality is enabled. You could combine this with the gui_enabled() trick above. - Run your program with WIRESHARK_CONFIG_DIR=/nonexistent to ensure an empty configuration profile. -- Kind regards, Peter Wu https://lekensteyn.nl ___________________________________________________________________________ Sent via: Wireshark-users mailing list <wireshark-users () wireshark org> Archives: https://www.wireshark.org/lists/wireshark-users Unsubscribe: https://www.wireshark.org/mailman/options/wireshark-users mailto:wireshark-users-request () wireshark org?subject=unsubscribe
Current thread:
- How to disable lua support from command line ? Matt (Jul 01)
- Re: How to disable lua support from command line ? Guy Harris (Jul 01)
- Re: How to disable lua support from command line ? Matt (Jul 01)
- Re: How to disable lua support from command line ? Guy Harris (Jul 01)
- Re: How to disable lua support from command line ? Matt (Jul 02)
- Re: How to disable lua support from command line ? Peter Wu (Jul 02)
- Re: How to disable lua support from command line ? Guy Harris (Jul 02)
- Re: How to disable lua support from command line ? Matt (Jul 02)
- Re: How to disable lua support from command line ? Guy Harris (Jul 02)
- Re: How to disable lua support from command line ? Matt (Jul 02)
- Re: How to disable lua support from command line ? Guy Harris (Jul 02)
- Re: How to disable lua support from command line ? Matt (Jul 21)
- Re: How to disable lua support from command line ? Peter Wu (Jul 28)
- Re: How to disable lua support from command line ? Matt (Jul 28)
- Re: How to disable lua support from command line ? Matt (Jul 01)
- Re: How to disable lua support from command line ? Guy Harris (Jul 01)