Ethereal-dev: [Ethereal-dev] Could it be solution to priting error in pop windows
----- Original Message -----
From: "Raman Singla" <ramans@xxxxxxxxxxxxxxxxxxx>
To: "Ethereal development" <ethereal-dev@xxxxxxxxxxxx>
Sent: 2006 Jun 07 4:31 AM
Subject: [Ethereal-dev] Could it be solution to priting error in pop windows
> Hi all,
> few days back, i asked for any solution for how to print errors in pop-up
> windows in dissector section.
>
> I m new to computer programming & ofcause dealing with open source. Here
is
> an solution which i came across. Kindly give ur comments as this is not a
> professional solution its just an twist of existing components.
>
> solution :
> since we can access err & err_info in wiretap for error no & error message
> (they will be printed in a popup window) error message display is written
> here in this case file.c for all errcode in wtap.h
>
> so why have a err_no & err_info in our pseudo header. since info in pseudo
> header we have access in dissector via pinfo. if error is there in
dissector
> then set this err_no & err_info & return (since dissector is void type).
>
> we can check this this erro_no in seek_read/read & if found any err_no set
> it will simplay set actual errno & err_info passed by ethereal & it will
> return from seek_read/read by returning FALSE.
>
> to me etheral works like this :
>
> in wiretap :
> 1. go to open (check for file file format & do initialization) then
perform
> read function repeteadly untill it read a full file. (if we choose open
> recent then this step is omitted)
> 2. go to open.
> 4. run read.
> 5. go to corresponding dissector.
> 5. run seek_read.
> 6. go to dissector.
> 7 run read & go to dissector until it has read whole packets.
>
> 8. now run seek read & dissectors (based on user selection )
>
> (of cause we can speed up the operation in case of large file by having
> checks eg. colum info is fed during read & not seek_read & decoding of hex
> is done in seek_read not in read. so we can have checks accordingly by
> knowing from where our contorl is coming (seek/read)
> well this check will be applicable only for dissector which will be called
> directly after seek/read i.e. after wiretap.
>
> Kindy post ur comments is approaches like these are gud since there is no
> provision of printing error in dissector right now in ethereal. or how can
i
> do it more refined way.
>
> regards,
> raman
>
>
>
>
>
>
> ----- Original Message -----
> From: "Raman Singla" <ramans@xxxxxxxxxxxxxxxxxxx>
> To: <jhoger@xxxxxxxxx>; "Ethereal development" <ethereal-dev@xxxxxxxxxxxx>
> Sent: 2006 Jun 02 4:42 AM
> Subject: Re: [Ethereal-dev] error in printing error message using
> simple_dialog
>
>
> > hi,
> > there is a file (trace.def) which is having all the structure format
> telling
> > how the hexdumps should be decode for gprs messages
> >
> > suppose system is unable to open this file, there should be a error
> message
> > indicating that error file is missing.
> >
> > Here when i say error messages they are not with respect to packets,
they
> > are with respect to other issues. before becoding begins it will ensure
> > these parameters & if it unable to set an working environment it will
pop
> up
> > an error message. ofcause packet-related error will be using
> proto_add_text.
> >
> > Similarly in wiretap (i have written for a new capture file format, if
> > endian type is missing (file can be in either big/little format then it
> > won't proceed further & prompt a error messsage)
> >
> > simple_dialog(ESD_TYPE_ERROR, ESD_BTN_OK, dec_err_msg);
> > does this with appropriate paramaters. but here in my case it is giving
> > error on both platform linux/win.
> >
> > error on LINUX
> > it is giving an linking error.
> > epan/./libs/libethereal.so: undefined reference to 'simple_dialog'
> >
> > err on WINDOWS
> > dissectors.lib(packet-dec.obj) : error LNK2001: unresolved external
symbol
> > _simp
> > le_dialog
> > libethereal.dll : fatal error LNK1120: 1 unresolved externals
> > NMAKE : fatal error U1077: 'link' : return code '0x460'
> > Stop.
> > NMAKE : fatal error U1077: '"C:\Apps_32\MICROSOFT VISUAL
> > STUDIO\VC98\BIN\NMAKE.E
> > XE"' : return code '0x2'
> > Stop.
> >
> > regards,
> > raman
> >
> > ----- Original Message -----
> > From: "John R." <jhoger@xxxxxxxxx>
> > To: "Ethereal development" <ethereal-dev@xxxxxxxxxxxx>
> > Sent: 2006 Jun 02 4:23 AM
> > Subject: Re: [Ethereal-dev] error in printing error message using
> > simple_dialog
> >
> >
> > > On 6/1/06, Raman Singla <ramans@xxxxxxxxxxxxxxxxxxx> wrote:
> > > > Hi,
> > > >
> > > > I want to use simple_dialog function defined in
"gtk/simple_dialog.c"
> > for
> > > > printing error messages.
> > >
> > > Upon what event would trigger such a dialog? Every time the packet is
> > > selected? It seems like a very bad idea since you would end up stuck
> > > in a dialog box every time the packet is dissected. If you had a bunch
> > > of these packets, you would end up stuck in dialog boxes as you try to
> > > navigate between packets in the display.... yikes!
> > >
> > > -- John.
> > > _______________________________________________
> > > Ethereal-dev mailing list
> > > Ethereal-dev@xxxxxxxxxxxx
> > > http://www.ethereal.com/mailman/listinfo/ethereal-dev
> >
> > _______________________________________________
> > Ethereal-dev mailing list
> > Ethereal-dev@xxxxxxxxxxxx
> > http://www.ethereal.com/mailman/listinfo/ethereal-dev
>
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