Wireshark · Ethereal-dev: [Ethereal-dev] Adding the "Decode as" functionality to tethereal

[Lionel Ains <lains@xxxxxxx>]

Hi all,

I've modified tethereal to add a functionality similar to the "Decode 
As" dialog on ethereal.
This consists of an additional switch '-d' on the command-line.
I would like to make it more user-friendly by showing the dissector 
names (i.e. rtp, mip...) used as the key in the hash table for 
dissectors corresponding to each protocol short names shown in the 
"Decode As" dialog (i.e. RTP, Mobile IP).
So far, I've been able to get all handles for a specific table. For 
example, when working with "ip.proto", I use 
dissector_table_foreach_handle("ip.proto", func, user_data) from packet.c.
This allows me to get each handles for every dissector for "ip.proto". 
This allows me to get the short name for each handle, but not the key 
within the hash.
Is there a way for me to extract the hash key from a dissector's handle?
This way, I can use the key rather than the short name to specify a 
dissector on the command-line.

Lionel