I used the not-long-since-added proto_tree_add_bits_ret_val() in packet-umts_fp.c. There is also proto_tree_add_bits_item() which doesn't extract the value for you.
Are these functions not suitable for your purpose? It certainly simplified the part of the code I needed it for. Martin On Nov 14, 2007 6:22 PM, Neil Piercy <[EMAIL PROTECTED]> wrote: > > > > -----Original Message----- > > [mailto:[EMAIL PROTECTED] On Behalf Of > > ronnie sahlberg > > > Not tested! > > grab the hfinfo structure and modify the fields at runtime : > > > > header_field_info *hfinfo; > > > > hfinfo = proto_registrar_get_nth(hf_index); > > hfinfo->bitmask = new bitmask > > hfinfo->bitshift = new bit shift > > > very ugly. it could work. > > I agree - but I'll try! > > > please do not contribute any code to wireshark that does > > anything like this :-) > > That's a shame, because this is needed in order to extend the current > gsm_a dissector to cope with half octet IE which can be in the upper or > lower half of the octet. I did ask for an _good_ way ;-). > > I still reckon the general way is to add bit_offset to all the proto > calls - but I guess that won't happen anytime soon ;-). Even more ugly > hack: use the _top_ 3 bits of the current offset in those calls as a bit > offset...... maybe not! > > > Neil > _______________________________________________ > Wireshark-dev mailing list > Wireshark-dev@wireshark.org > http://www.wireshark.org/mailman/listinfo/wireshark-dev > _______________________________________________ Wireshark-dev mailing list Wireshark-dev@wireshark.org http://www.wireshark.org/mailman/listinfo/wireshark-dev
