static void
dissect_json(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
{
proto_tree *json_tree = NULL;
proto_item *ti = NULL;
json_parser_data_t parser_data;
tvbparse_t *tt;
const char *data_name;
int offset;
data_name = pinfo->match_string;
if (!(data_name && data_name[0])) {
/*
* No information from "match_string"
*/
data_name = (char *)(pinfo->private_data);
if (!(data_name && data_name[0])) {
/*
* No information from "private_data"
*/
data_name = NULL;
}
}
if (tree) {
ti = proto_tree_add_item(tree, proto_json, tvb, 0, -1, ENC_NA);
json_tree = proto_item_add_subtree(ti, ett_json);
if (data_name)
proto_item_append_text(ti, ": %s", data_name);
}
offset = 0;
parser_data.stack = ep_stack_new();
ep_stack_push(parser_data.stack, json_tree);
tt = tvbparse_init(tvb, offset, -1, &parser_data, want_ignore);
/* XXX, only one json in packet? */
while ((tvbparse_get(tt, want)))
;
offset = tvbparse_curr_offset(tt);
proto_item_set_len(ti, offset);
/* if we have some unparsed data, pass to data-text-lines dissector (?) */
if (tvb_length_remaining(tvb, offset) > 0) {
int datalen, reported_datalen;
tvbuff_t *next_tvb;
datalen = tvb_length_remaining(tvb, offset);
reported_datalen = tvb_reported_length_remaining(tvb, offset);
next_tvb = tvb_new_subset(tvb, offset, datalen, reported_datalen);
call_dissector(text_lines_handle, next_tvb, pinfo, tree);
} else if (data_name) {
col_append_sep_fstr(pinfo->cinfo, COL_INFO, " ", "(%s)", data_name);
}
}
static int
dissect_json(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data)
{
proto_tree *json_tree = NULL;
proto_item *ti = NULL;
json_parser_data_t parser_data;
tvbparse_t *tt;
const char *data_name;
int offset;
/* JSON dissector can be called in a JSON native file or when transported
* by another protocol. We set the column values only if they've not been
* already set by someone else.
*/
wmem_list_frame_t *proto = wmem_list_frame_prev(wmem_list_tail(pinfo->layers));
if (proto) {
const char *name = proto_get_protocol_filter_name(GPOINTER_TO_INT(wmem_list_frame_data(proto)));
if (!strcmp(name, "frame")) {
col_set_str(pinfo->cinfo, COL_PROTOCOL, "JSON");
col_set_str(pinfo->cinfo, COL_INFO, "JavaScript Object Notation");
}
}
data_name = pinfo->match_string;
if (! (data_name && data_name[0])) {
/*
* No information from "match_string"
*/
data_name = (char *)data;
if (! (data_name && data_name[0])) {
/*
* No information from dissector data
*/
data_name = NULL;
}
}
if (tree) {
ti = proto_tree_add_item(tree, hfi_json, tvb, 0, -1, ENC_NA);
json_tree = proto_item_add_subtree(ti, ett_json);
if (data_name)
proto_item_append_text(ti, ": %s", data_name);
}
offset = 0;
parser_data.stack = wmem_stack_new(wmem_packet_scope());
wmem_stack_push(parser_data.stack, json_tree);
tt = tvbparse_init(tvb, offset, -1, &parser_data, want_ignore);
/* XXX, only one json in packet? */
while ((tvbparse_get(tt, want)))
;
offset = tvbparse_curr_offset(tt);
proto_item_set_len(ti, offset);
/* if we have some unparsed data, pass to data-text-lines dissector (?) */
if (tvb_reported_length_remaining(tvb, offset) > 0) {
tvbuff_t *next_tvb;
next_tvb = tvb_new_subset_remaining(tvb, offset);
call_dissector_with_data(text_lines_handle, next_tvb, pinfo, tree, data);
} else if (data_name) {
col_append_sep_fstr(pinfo->cinfo, COL_INFO, " ", "(%s)", data_name);
}
return tvb_captured_length(tvb);
}
