Why do I get a link error when I call proto_tree_add_format_wsp_text() in my dissector?

asked 2019-06-19 14:06:08 +0000

jlshuman
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updated 2019-06-19 23:49:41 +0000

Guy Harris
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I am trying to make a call to proto_tree_add_format_wsp_text. This method is implemented in proto.c in the epan folder. I can include the header file for it and it will compile, but it will not link because my project does not know where the object code is. When I build Wireshark, I assume that files like proto.c are compiled into a library or dll. I think I should be able to link to that. But what is the file I need to link to and where is it?

answered 2019-06-19 14:22:58 +0000

grahamb

flag of United Kingdom of Great Britain and Northern Ireland

23835 ●4 ●973 ●227 https://www.wireshark.org

That function isn't exported from the libwireshark library, so can't be used by plugins.

To fix this you can temporarily prefix the declaration in proto.h with WS_DLL_PUBLIC and rebuild.

To create a permanent change you should submit a change at the Wireshark Gerrit instance. See the wiki page on Submitting Patches for more info.

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Is there public code that I can call that would replace the call to proto_tree_format_wsp_text? Something I can call that will do basically the same thing?

jlshuman ( 2019-06-19 14:47:02 +0000 )edit

That depends, what do you actually want to achieve? An example of the input bytes and the output display would help.

grahamb ( 2019-06-19 15:56:46 +0000 )edit

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Why do I get a link error when I call proto_tree_add_format_wsp_text() in my dissector?

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