Question: "Undefined globals" in plugin environment like Wireshark

[roddypratt]

I'm using Lua for developing Wireshark plugins. Wireshark defines various global objects/functions that must be used by plugins.

This gives a lot of "Undefined global" errors, which I can fix by adding these in the workspace settings Lua.diagnostics.globals

But, is there a better way of managing this so I can create a file like those in meta/template/*.lua and have that added to the globals?

[sumneko]

This is the recommended approach.
You could put the file in your workspace(but never require it in runtime), or use Lua.workspace.library.
Here is an example: https://github.com/Ketho/vscode-wow-api/blob/master/EmmyLua/API/GlobalAPI/compat.lua

[roddypratt]

Thanks, that's exactly what I need.

[daldr-ntml]

May I ask for clarification on how to do this please?

My lua script general.lua shows this error:

so I added a file called compat.lua to my script folder, containing:

---@param name The name of the protocol
---@param desc A Long Text description of the protocol (usually lowercase)
---[Documentation](https://www.wireshark.org/docs/wsdg_html_chunked/wsluarm_modules.html)
function Proto.new(name, desc) end

but general.lua still has the error and compat.lua also shows an error:

What am I doing wrong?

[roddypratt]

You've defined Proto.new(), but not Proto itself.

Add this to your compat.lua.
Proto = {}

I'm working on a more complete one here. https://github.com/roddypratt/router_dissectors/blob/main/wireshark.lua
Feel free to copy/contribute

[daldr-ntml]

@roddypratt Thanks very much for your answer and for the file.

[Z-LL]

You've defined Proto.new(), but not Proto itself.

Add this to your compat.lua.
Proto = {}

I'm working on a more complete one here. https://github.com/roddypratt/router_dissectors/blob/main/wireshark.lua
Feel free to copy/contribute

Thanks very much！But there is still a small problem: package.prepend_path() undefined , hope it can be fixed.

[roddypratt]

package.prepend_path() is not a standard Lua function, and AFACIT it's not mentioned in the Wireshark docs either. But, it does exist in Wireshark , and works as expected :)