Hi,
Should we make dissector_add() and friends fail silently when the
referenced dissector is not available? Currently the g_assert() is
killing, while a return would suffice.
This becomes more relevant since we can delete a dissector on the fly,
so we may run into this assert while not expected.
By the way Jean-Grégoire, could you clean up the patch on the Wiki a
bit? There seems to be residual development stuff in there, which may
cause conflicts.
Thanx,
Jaap
Jean-Grégoire Foulon wrote:
On 7/9/07, *Guy Harris* <guy@xxxxxxxxxxxx <mailto:guy@xxxxxxxxxxxx>> wrote:
Cruz, Petagay wrote:
> hi, how can I reduce the size of the wireshark library produced
in 'make
> install'? I built without plugins. what is using all the space?
Well, for starters, all the dissectors - plugins *aren't* part of the
library, they're loaded at run time, but almost all the disssectors in
Wireshark are built in, so they're part of the library.
There's currently no easy way to select a subset of dissectors to
include.
The rest of it is the Wireshark "core" to support dissection, taps,
etc.; that can't be removed.
Hi,
I just finished to write a patch for Tshark to disable a lot of
dissectors and make it smaller. It is on the wiki :
http://wiki.wireshark.org/BuildingAndInstalling
The choice of the removed dissectors is arbitrary, it suits my own use
ans only works for Tshark, but it can be a good start if you want to get
a smaller version of Wireshark.
Here is an extract of the readme, correct me if I did any mistakes
HOW TO REMOVE DISSECTORS
------------------------
First, modify some files so the unwanted dissectors won't be compiled
anymore:
Makefile.in <http://Makefile.in>
epan/Makefile.in
epan/dissectors/Makefile.in
You must choose the unwanted dissectors so that they were no
dependencies problems. The dissectors you leave must not depend on the
dissector you remove.
In some cases, you will have to modify the source files to get rid of
dependencies. For example, the telnet dissector depends on kerberos, it
was patched so we could remove the kerberos dissector and keep the
telnet one.
tshark-tap-register.c and epan/dissectors/register.c are generated by
Makefiles by parsing source files and adding specific functions they
find in those files. They must be deleted to be regenerated with the
correct list of functions. Before calling 'make' to build them, you have
to remove the unused sourcefiles from their original directory otherwise
tshark-tap-register.c and epan/dissectors/register.c will still have
references to functions which won't be compiled.
Once everything compiles, try to run Tshark.
If you are lucky it will just work out of the box, but it's more likely
Tshark will print "Aborted" and exit. It is an assert message which is
printed when a dissector can't be added dynamically with the function
dissector_add().
It means you have to patch some dissectors to remove dynamic dependencies.
All the dissector_add() calls that create problems must be commented. Be
careful not to remove important ones.
To know in which file the problem lays, use gdb and its backtrace command:
gdb tshark
>run
>backtrace
>q
It Will give you the file and the line that cause the assert to fail.
Once you removed all the calls that make asserts fail, Tshark should run
properly.
Regards,
Jean-Gregoire
