Unable to see the plugin compiled in the custom wireshark run? - wireshark-dissector

Question

I am following the foo example given in the wireshark documentation.
I am able to build the foo code plugin. I am using wireshark 3.0.1 version. In the workroot folder, I have updated the target - PLUGIN_SRC_DIRS - plugins/epan/foo just before gryphon.
I can see that my code builds because I got some compilation error which I was able to fix it.
My foo code lives inside the plugins/epan folder.
I am running custom wireshark - sudo ./run/wireshark
There is a surprise here that I can't see even gryphon protocol field in the running wireshark. So in order to test this, I am typing foo or gryphon in that display filter and it turns red and it say foo is neither a protocol nor a protocol field. I am using Ubuntu 16.04 LTS to build it. The build goes fine.
Here is packet-foo.c
#include "config.h"
#include <epan/packet.h>
#include "packet-foo.h"
static int proto_foo = -1;
static int dissect_foo(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree _U_, void *data _U_);
void
proto_register_foo(void)
{
proto_foo = proto_register_protocol (
"FOO Protocol", /* name */
"FOO", /* short name */
"foo" /* abbrev */
);
}
void
proto_reg_handoff_foo(void)
{
static dissector_handle_t foo_handle;
foo_handle = create_dissector_handle(dissect_foo, proto_foo);
dissector_add_uint("udp.port", FOO_PORT, foo_handle);
}
static int
dissect_foo(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree _U_, void *data _U_)
{
col_set_str(pinfo->cinfo, COL_PROTOCOL, "FOO");
/* Clear out stuff in the info column */
col_clear(pinfo->cinfo,COL_INFO);
return tvb_captured_length(tvb);
}
Here is the packet-foo.h
#define FOO_PORT 1234
The CMakeLists.txt is here, this is actually a copy of gryphon.
So, I am wondering if gryphon wasn't recognised that means foo won't be recognised too. So, this file might be a source of problem.
include(WiresharkPlugin)
# Plugin name and version info (major minor micro extra)
set_module_info(foo 0 0 4 0)
set(DISSECTOR_SRC
packet-foo.c
)
set(PLUGIN_FILES
plugin.c
${DISSECTOR_SRC}
)
set_source_files_properties(
${PLUGIN_FILES}
PROPERTIES
COMPILE_FLAGS "${WERROR_COMMON_FLAGS}"
)
include_directories(${CMAKE_CURRENT_SOURCE_DIR})
register_plugin_files(plugin.c
plugin
${DISSECTOR_SRC}
)
add_plugin_library(foo epan)
target_link_libraries(foo epan)
install_plugin(foo epan)
file(GLOB DISSECTOR_HEADERS RELATIVE "${CMAKE_CURRENT_SOURCE_DIR}" "*.h")
CHECKAPI(
NAME
foo
SWITCHES
-g abort -g termoutput -build
SOURCES
${DISSECTOR_SRC}
${DISSECTOR_HEADERS}
)

Answer 1

Merely changing the plugin isn't sufficient.
You need to modify the top make file so that foo is actually installed.
vim CMakeListsCustom.txt.example
Firstly, uncomment - line number 16
plugins/epan/foo
Since your foo lives inside plugins/epan/foo
Now, rename this example to
mv CMakeListsCustom.txt.example CMakeListsCustom.txt
vim CMakeLists.txt
Insert a line number around 1408-
plugins/epan/foo
After that, do make
and then sudo make install
Here is the working copy -
https://github.com/joshis1/WiresharkDissectorFoo