proto_item *add_tlv_subtree(tlv_info_t *self, proto_tree *tree, int hfindex, tvbuff_t *tvb, gint start, const guint encoding)
{
header_field_info *hf;
proto_tree *tlv_tree;
proto_item *tlv_item;
gint tlv_value_length, tlv_val_offset;
guint8 size_of_tlv_length_field;
guint8 tlv_type;
/* Make sure we're dealing with a valid TLV here */
if (get_tlv_type(self) < 0)
return tree;
/* Retrieve the necessary TLV information */
tlv_val_offset = get_tlv_value_offset(self);
tlv_value_length = get_tlv_length(self);
size_of_tlv_length_field = get_tlv_size_of_length(self);
tlv_type = get_tlv_type(self);
hf = proto_registrar_get_nth(hfindex);
tlv_item = proto_tree_add_text(tree, tvb, start, tlv_value_length+tlv_val_offset, "%s", hf->name);
tlv_tree = proto_item_add_subtree(tlv_item, ett_tlv[tlv_type]);
proto_tree_add_uint(tlv_tree, hf_tlv_type, tvb, start, 1, tlv_type);
if (size_of_tlv_length_field > 0) /* It is */
{
/* display the length of the length field TLV */
proto_tree_add_uint(tlv_tree, hf_tlv_length_size, tvb, start+1, 1, size_of_tlv_length_field);
/* display the TLV length */
proto_tree_add_uint(tlv_tree, hf_tlv_length, tvb, start+2, size_of_tlv_length_field, tlv_value_length);
} else { /* It is not */
/* display the TLV length */
proto_tree_add_uint(tlv_tree, hf_tlv_length, tvb, start+1, 1, tlv_value_length);
}
tlv_item = proto_tree_add_item(tlv_tree, hfindex, tvb, start+tlv_val_offset, tlv_value_length, encoding);
/* Return a pointer to the value level */
return tlv_item;
}
proto_tree *add_protocol_subtree(tlv_info_t *self, gint idx, proto_tree *tree, int hfindex, tvbuff_t *tvb, gint start, gint length _U_, const char *label)
{
/* Declare local variables */
proto_tree *tlv_tree;
proto_item *tlv_item;
gint tlv_value_length, tlv_val_offset;
guint8 size_of_tlv_length_field;
guint8 tlv_type;
guint32 tlv_value;
const gchar *hex_fmt;
/* Make sure we're dealing with a valid TLV here */
if (get_tlv_type(self) < 0)
return tree;
/* Retrieve the necessary TLV information */
tlv_val_offset = get_tlv_value_offset(self);
tlv_value_length = get_tlv_length(self);
size_of_tlv_length_field = get_tlv_size_of_length(self);
tlv_type = get_tlv_type(self);
/* display the TLV name and display the value in hex. Highlight type, length, and value. */
tlv_item = proto_tree_add_protocol_format(tree, hfindex, tvb, start, tlv_value_length+tlv_val_offset, "%s (%u byte(s))", label, tlv_value_length);
tlv_tree = proto_item_add_subtree(tlv_item, ett_tlv[tlv_type]);
proto_tree_add_uint(tlv_tree, hf_tlv_type, tvb, start, 1, tlv_type);
if (size_of_tlv_length_field > 0) /* It is */
{
/* display the length of the length field TLV */
proto_tree_add_uint(tlv_tree, hf_tlv_length_size, tvb, start+1, 1, size_of_tlv_length_field);
/* display the TLV length */
proto_tree_add_uint(tlv_tree, hf_tlv_length, tvb, start+2, size_of_tlv_length_field, tlv_value_length);
} else { /* It is not */
/* display the TLV length */
proto_tree_add_uint(tlv_tree, hf_tlv_length, tvb, start+1, 1, tlv_value_length);
}
/* display the TLV value and make it a subtree */
switch (tlv_value_length)
{
case 1:
tlv_value = tvb_get_guint8(tvb, start+tlv_val_offset);
hex_fmt = tlv_val_1byte;
break;
case 2:
tlv_value = tvb_get_ntohs(tvb, start+tlv_val_offset);
hex_fmt = tlv_val_2byte;
break;
case 3:
tlv_value = tvb_get_ntoh24(tvb, start+tlv_val_offset);
hex_fmt = tlv_val_3byte;
break;
case 4:
tlv_value = tvb_get_ntohl(tvb, start+tlv_val_offset);
hex_fmt = tlv_val_4byte;
break;
default:
tlv_value = tvb_get_ntohl(tvb, start+tlv_val_offset);
hex_fmt = tlv_val_5byte;
break;
}
/* Show "TLV value: " */
tlv_tree = proto_tree_add_subtree_format(tlv_tree, tvb, start+tlv_val_offset, tlv_value_length, idx, NULL, hex_fmt, label, tlv_value);
/* Return a pointer to the value level */
return tlv_tree;
}
{
/* Declare local variables */
proto_tree *tlv_tree;
proto_item *tlv_item;
guint start_of_tlv;
gint tlv_value_length, tlv_val_offset;
guint8 size_of_tlv_length_field;
guint8 tlv_type;
guint32 tlv_value;
gchar *hex_fmt;
/* Retrieve the necessary TLV information */
tlv_val_offset = get_tlv_value_offset(this);
start_of_tlv = start - tlv_val_offset;
tlv_value_length = get_tlv_length(this);
size_of_tlv_length_field = get_tlv_size_of_length(this);
tlv_type = get_tlv_type(this);
/* display the TLV name and display the value in hex. Highlight type, length, and value. */
tlv_item = proto_tree_add_item(tree, hfindex, tvb, start, tlv_value_length, little_endian);
if (!PITEM_FINFO(tlv_item))
return tree;
/* Correct the highlighting. */
PITEM_FINFO(tlv_item)->start -= tlv_val_offset;
PITEM_FINFO(tlv_item)->length += tlv_val_offset;
/* add TLV subtree to contain the type, length, and value */
tlv_tree = proto_item_add_subtree(tlv_item, *ett_tlv[tlv_type]);
/* display the TLV type */
proto_tree_add_text(tlv_tree, tvb, start_of_tlv, 1, "TLV type: %u", tlv_type);
