Re: [Ethereal-dev] Problem in linking the files

[Guy Harris <gharris@xxxxxxxxx>]

harsha ss wrote:

>     I am sending a detailed mail what I want to do,please give me the 
> guidelines.
>
> I want to read a separate file format which is already existing.The file 
> format which
> I want to read is not of any of the types which ethereal understands.
> When i tried to read that file through the ethereal it was giving the 
> unknown format.
> Then I went through the wiretap direcory wrote the open routine,and 
> read,seek_read routine.
>   Which reads our own file.The routines works and reads the file.
>
> I want to do the decoding of the read packets later.Now I want to print 
> the packet name,
> Packet_info,source and destination which is in the string format into 
> the summary pane.
>   So As you said I added the routines in dissectors with the registering 
> the
> protocol followed by dissect_xxx function.I am calling the routines like 
> col_set_str
> to print on the summary pane.

> 4. I tried to rum automake,autoconf and aclocal in dissector path but 
> there is no configure file so we cant.

You should run "./autogen.sh".  It will run automake, autoconf, and 
aclocal for you.

> 6. To print the information on the summary pane wether i need to 
> initialize any structure members
>   of the cinfo structure?.

No.  Dissectors just do

	if (check_col(pinfo->cinfo, COL_xxx))
		col_set_str(pinfo->cinfo, COL_xxx, "string");

where COL_xxx is the #define for the column you're setting, and a 
"col_add" routine could be used instead of "col_set_str()".

> 7. For the pcap files the corresponding hexdump is displayed on the
>   third window.Which is the routine which is responsible for printing the
>     hexdump in the third window.

It's done by code in "gtk/proto_draw.c".  Note that dissectors do *NOT* 
call routines to draw that text; the text that's drawn is just the raw 
packet data, as supplied by Wiretap, or reassembled data.

> 8. How to add the information i read to the ethereal summary pane first.
>     Please tell me the routines to call.I think the column_utility routines
>     itself are responsible for printing on the first window of ethereal.

They're responsible for generating the data used in the summary pane.