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
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