Error on starting wireshark with SCION dissector

[Leopold Ryll]

Hello,

I installed the SCION dissector for wireshark as described in SCION Tutorials. When I start wireshark I get the following error message:

- System: Lubuntu 16.04 in VM

- Wireshark Version: 2.6.3 (Git v2.6.3 packaged as 2.6.3-1~16.04.0)

- Wireshark is started by a non root user belonging to the group `wireshark`

- lua script path is `/usr/lib/x86_64-linux-gnu/wireshark/plugins/2.6`

Does anybody know what to do in this case? Any help appreciated.

Best regards

Leo R.

[Matthias Frei]

Hi Leo,

Looking at the wireshark source code, it appears this is due to a change in the lua API introduced in wireshark-2.5.0; the scion.lua file is passing an empty string as the "text" parameter of the ProtoExpert-constructor which is now explicitly disallowed.

To fix this issue, it should be enough to replace the empty strings in scion.lua in the lines 192 to 213, or apply the patch attached to this message. Unfortunately I cannot test easily test this myself, as I have an older wireshark version installed.

You can apply the patch by running

```

cd $SC && git apply path/to/0001-Fix-dissector-for-wireshark-2.5-add-missing-summary.patch`

```

Cheers,

Matthias

[Leopold Ryll]

Hi Matthias,

that worked. Thank you very much!

Best regards

Leo

[Matthias Frei]

Hi Leo,

glad I could help.

This fix has been pushed to scionproto/scion and the scionlab branch of netsec-ethz/scion.

Cheers

Matthias