static int TvbRange_ustring_any(lua_State* L, gboolean little_endian) {
/* Obtain a UTF-16 encoded string from a TvbRange */
TvbRange tvbr = checkTvbRange(L,1);
gchar * str;
if ( !(tvbr && tvbr->tvb)) return 0;
if (tvbr->tvb->expired) {
luaL_error(L,"expired tvb");
return 0;
}
str = (gchar*)tvb_get_unicode_string(wmem_packet_scope(),tvbr->tvb->ws_tvb,tvbr->offset,tvbr->len,(little_endian ? ENC_LITTLE_ENDIAN : ENC_BIG_ENDIAN));
lua_pushlstring(L, str, strlen(str));
return 1; /* The string */
}
static gint dissect_counted_values(tvbuff_t *tvb, gint offset, int hf_id, packet_info *pinfo, proto_tree *tree, gboolean single, gboolean unicode, guint encoding)
{
proto_item *item;
guint32 length, count, i;
count = tvb_get_letohl(tvb, offset);
proto_tree_add_item(tree, hf_tnef_values_count, tvb, offset, 4, ENC_LITTLE_ENDIAN);
if(count > 1) {
if(single) {
item = proto_tree_add_expert_format(tree, pinfo, &ei_tnef_expect_single_item, tvb, offset, 4,
"Expecting a single item but found %d", count);
tree = proto_item_add_subtree(item, ett_tnef_counted_items);
}
}
offset += 4;
for(i = 0; i < count; i++) {
length = tvb_get_letohl(tvb, offset);
proto_tree_add_item(tree, hf_tnef_value_length, tvb, offset, 4, ENC_LITTLE_ENDIAN);
offset += 4;
if (unicode) {
char *unicode_str = tvb_get_unicode_string(wmem_packet_scope(), tvb, offset, length, ENC_LITTLE_ENDIAN);
proto_tree_add_string(tree, hf_id, tvb, offset, length, unicode_str);
} else {
proto_tree_add_item(tree, hf_id, tvb, offset, length, encoding);
}
offset += length;
/* XXX: may be padding ? */
}
return offset;
}
static int
dissect_dtpt_wstring(tvbuff_t *tvb, guint offset, proto_tree *tree, int hfindex)
{
guint32 wstring_length;
guint32 wstring_size;
char *wstring_data = NULL;
guint32 wstring_padding = 0;
wstring_length = tvb_get_letohl(tvb, offset);
wstring_data = tvb_get_unicode_string(wmem_packet_scope(), tvb, offset+4, wstring_length, ENC_LITTLE_ENDIAN);
wstring_size = wstring_length;
if (wstring_size%4) {
wstring_padding = (4-wstring_size%4);
wstring_size += wstring_padding;
}
if (tree) {
proto_item *dtpt_wstring_item = NULL;
proto_tree *dtpt_wstring_tree = NULL;
dtpt_wstring_item = proto_tree_add_string(tree, hfindex,
tvb, offset+0, 4+wstring_size, wstring_data);
if (dtpt_wstring_item)
dtpt_wstring_tree = proto_item_add_subtree(dtpt_wstring_item, ett_dtpt_wstring);
if (dtpt_wstring_tree) {
proto_tree_add_uint(dtpt_wstring_tree, hf_dtpt_wstring_length,
tvb, offset+0, 4, wstring_length);
if (wstring_length)
proto_tree_add_string(dtpt_wstring_tree, hf_dtpt_wstring_data,
tvb, offset+4, wstring_length, wstring_data);
if (wstring_padding)
proto_tree_add_text(dtpt_wstring_tree, tvb,
offset+4+wstring_length,wstring_padding, "Padding");
}
}
offset += 4+wstring_size;
return offset;
}
