Wireshark · Wireshark-dev: Re: [Wireshark-dev] Problems while displaying the digits in the packet

[Sebastien Tandel <sebastien@xxxxxxxxx>]

Hi,

It seems that hf_xyz_imsi that you have defined in your hf_register_info
struct is not a FT_STRING or a FT_STRINGZ type.

Regards,

Sebastien Tandel

taraniteja.vishwanatha@xxxxxxxxx wrote:
>
> Hi ,
>
>  
>
> We have a parameter IMSI in our protocol . It has the following format :
>
>  
>
> 7
>
> 	
>
> 6
>
> 	
>
> 5
>
> 	
>
> 4
>
> 	
>
> 3
>
> 	
>
> 2
>
> 	
>
> 1
>
> 	
>
> 0
>
> 	
>
> octet
>
> Number of digits
>
> 	
>
> 3
>
> IMSI digit 2
>
> 	
>
> IMSI digit 1
>
> 	
>
> 4
>
> IMSI digit 4
>
> 	
>
> IMSI digit 3
>
> 	
>
> 5
>
> IMSI digit 2n
>
> 	
>
> IMSI digit 2n-1
>
> 	
>
> n+3
>
>  
>
> typedef struct dgt_set_t
>
> {
>
>     unsigned char out[15];
>
> }
>
> dgt_set_t;
>
>  
>
> static dgt_set_t Dgt1_9_bcd = {
>
>     {
>
>      '0','1','2','3','4','5','6','7','8','9','?','?','?','?','?'
>
>     }
>
> };
>
>  
>
> char *digit_str;
>
>  
>
> digit_str = unpack_digits(tvb, offset, &Dgt1_9_bcd);
>
>  
>
> proto_tree_add_string(tree, hf_xyz_imsi, tvb, (imsi_len/2 + 1),
> (imsi_len/2 + 1), digit_str);
>
>  
>
> return offset + imsi_len/2 + 1;
>
>  
>
> static char*
>
> unpack_digits(tvbuff_t *tvb, int offset, dgt_set_t *dgt){
>
>  
>
>         int length;
>
>         guint8 octet;
>
>         int i=0;
>
>         char *digit_str;
>
>  
>
>         length = tvb_length(tvb);
>
>         if (length < offset)
>
>                 return "";
>
>         digit_str = ep_alloc((length - offset)*2+1);
>
>  
>
>         while ( offset < length ){
>
>  
>
>                 octet = tvb_get_guint8(tvb,offset);
>
>  
>
>                 digit_str[i] = dgt->out[octet & 0x0f];
>
>                 i++;
>
>  
>
>                 /* unpack second value in byte */
>
>                 octet = octet >> 4;
>
>  
>
>                 if (octet == 0x0f)      /* odd number bytes - hit
> filler */
>
>                         break;
>
>  
>
>                 digit_str[i] = dgt->out[octet & 0x0f];
>
>                 i++;
>
>                 offset++;
>
>  
>
>         }
>
>         digit_str[i]= '\0';
>
>         return digit_str;
>
> }
>
>  
>
> When the above code snippet is executed, we are getting the following
> error:
>
>  
>
> Warn Dissector bug, protocol MACIC, in packet 1: proto.c:1859: failed
> assertion "hfinfo->type == FT_STRING || hfinfo->type == FT_STRINGZ"
>
>  
>
> Your help is appreciated .
>
>  
>
> //Tarani
>
>  
>
>  
>
>
> The information contained in this electronic message and any
> attachments to this message are intended for the exclusive use of the
> addressee(s) and may contain proprietary, confidential or privileged
> information. If you are not the intended recipient, you should not
> disseminate, distribute or copy this e-mail. Please notify the sender
> immediately and destroy all copies of this message and any attachments.
>
> WARNING: Computer viruses can be transmitted via email. The recipient
> should check this email and any attachments for the presence of
> viruses. The company accepts no liability for any damage caused by any
> virus transmitted by this email.
>
> www.wipro.com
>
> ------------------------------------------------------------------------
>
> _______________________________________________
> Wireshark-dev mailing list
> Wireshark-dev@xxxxxxxxxxxxx
> http://www.wireshark.org/mailman/listinfo/wireshark-dev
>