Hello
After having spent a few hours in prototyping my custom protocol dissector with LUA, I decided to switch to C (Win10 x64 / VS2015 / 2.9.0rc of WS)
We already have a code base in some othre projects consuming that same protocol, but it is written in C++. Is it possible to use C++ to write a dissector plugin or am I stuck to C?
Thanks
Christophe
Yes. None of the core Wireshark plugins use C++, but WSGD does.
Note that Wireshark 2.9.x (and the up-coming 3.0) are built with VS2017. VS2015 should be OK, but it isn't tested.
It can be done by dividing the protocol in C and C++ like below (creating DLMS plugin for wireshark. May want to refer my GitHub repository for the same:
#!/bin/sh
g++ -Wall -Wno-sign-compare -Wno-unused-variable -Wno-unused-function \
`pkg-config --cflags-only-I wireshark` \
-Iinclude \
-shared \
-fPIC \
-o dlms.o \
-c dlms.cpp \
&& \
ar rs libdlms.a dlms.o \
&& echo "libdlms.a created" \
&& rm dlms.o \
&& \
gcc -Wall -Wno-sign-compare \
`pkg-config --cflags-only-I wireshark` \
-Iinclude \
-shared \
-o dlms.so \
proto.c libdlms.a \
&& echo "dlms.so created" \
&& rm libdlms.a \
&& sudo cp dlms.so /usr/lib/x86_64-linux-gnu/wireshark/plugins/3.2/epan \
&& echo "dlms.so copied to wireshark plugins" \
&& rm dlms.so
With proper use of extern "C" it may be possible to write it completely in C++ (if C++ compilers turn extern "C" functions into code that follows the platform's C ABI/procedure call interface).
Actually your argument is rightly directed and I did try that earlier but I faced some issues.
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