Пример #1
0
/*
 * XXX - do reassembly, using the EOM flag.  (Then do that in the Netware
 * SPX implementation, too.)
 *
 * XXX - hand off to subdissectors based on the socket number.
 */
static void
dissect_spp(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
{
	proto_tree	*spp_tree = NULL;
	proto_item	*ti;
	tvbuff_t	*next_tvb;
	guint8		conn_ctrl;
	proto_tree	*cc_tree;
	guint8		datastream_type;
	const char	*datastream_type_string;
	guint16         spp_seq;
	const char	*spp_msg_string;
	guint16		low_socket, high_socket;

	col_set_str(pinfo->cinfo, COL_PROTOCOL, "SPP");
	col_set_str(pinfo->cinfo, COL_INFO, "SPP");

	if (tree) {
		ti = proto_tree_add_item(tree, proto_spp, tvb, 0, SPP_HEADER_LEN, ENC_NA);
		spp_tree = proto_item_add_subtree(ti, ett_spp);
	}

	conn_ctrl = tvb_get_guint8(tvb, 0);
	spp_msg_string = spp_conn_ctrl(conn_ctrl);
	col_append_fstr(pinfo->cinfo, COL_INFO, " %s", spp_msg_string);
	if (tree) {
		ti = proto_tree_add_uint_format_value(spp_tree, hf_spp_connection_control, tvb,
						0, 1, conn_ctrl,
						"%s (0x%02X)",
						spp_msg_string, conn_ctrl);
		cc_tree = proto_item_add_subtree(ti, ett_spp_connctrl);
		proto_tree_add_boolean(cc_tree, hf_spp_connection_control_sys, tvb,
				       0, 1, conn_ctrl);
		proto_tree_add_boolean(cc_tree, hf_spp_connection_control_send_ack, tvb,
				       0, 1, conn_ctrl);
		proto_tree_add_boolean(cc_tree, hf_spp_connection_control_attn, tvb,
				       0, 1, conn_ctrl);
		proto_tree_add_boolean(cc_tree, hf_spp_connection_control_eom, tvb,
				       0, 1, conn_ctrl);
	}

	datastream_type = tvb_get_guint8(tvb, 1);
	datastream_type_string = spp_datastream(datastream_type);
	if (datastream_type_string != NULL) {
		col_append_fstr(pinfo->cinfo, COL_INFO, " (%s)", datastream_type_string);
	}
	if (tree) {
		if (datastream_type_string != NULL) {
			proto_tree_add_uint_format_value(spp_tree, hf_spp_datastream_type, tvb,
						   1, 1, datastream_type,
						   "%s (0x%02X)",
						   datastream_type_string,
						   datastream_type);
		} else {
			proto_tree_add_uint(spp_tree, hf_spp_datastream_type, tvb,
						   1, 1, datastream_type);
		}
		proto_tree_add_item(spp_tree, hf_spp_src_id, tvb,  2, 2, ENC_BIG_ENDIAN);
		proto_tree_add_item(spp_tree, hf_spp_dst_id, tvb,  4, 2, ENC_BIG_ENDIAN);
	}
	spp_seq = tvb_get_ntohs(tvb, 6);
	if (tree) {
		proto_tree_add_uint(spp_tree, hf_spp_seq_nr, tvb,  6, 2, spp_seq);
		proto_tree_add_item(spp_tree, hf_spp_ack_nr, tvb,  8, 2, ENC_BIG_ENDIAN);
		proto_tree_add_item(spp_tree, hf_spp_all_nr, tvb, 10, 2, ENC_BIG_ENDIAN);
	}

	if (tvb_reported_length_remaining(tvb, SPP_HEADER_LEN) > 0) {
		if (pinfo->srcport > pinfo->destport) {
			low_socket = pinfo->destport;
			high_socket = pinfo->srcport;
		} else {
			low_socket = pinfo->srcport;
			high_socket = pinfo->destport;
		}

		next_tvb = tvb_new_subset_remaining(tvb, SPP_HEADER_LEN);
		if (dissector_try_uint(spp_socket_dissector_table, low_socket,
		    next_tvb, pinfo, tree))
			return;
		if (dissector_try_uint(spp_socket_dissector_table, high_socket,
		    next_tvb, pinfo, tree))
			return;
		call_dissector(data_handle, next_tvb, pinfo, tree);
	}
}
Пример #2
0
	col_set_str(pinfo->cinfo, COL_PROTOCOL, "SPP");
	col_set_str(pinfo->cinfo, COL_INFO, "SPP");

	ti = proto_tree_add_item(tree, proto_spp, tvb, 0, SPP_HEADER_LEN, ENC_NA);
	spp_tree = proto_item_add_subtree(ti, ett_spp);

	conn_ctrl = tvb_get_guint8(tvb, 0);
	spp_msg_string = spp_conn_ctrl(conn_ctrl);
	col_append_fstr(pinfo->cinfo, COL_INFO, " %s", spp_msg_string);

	proto_tree_add_bitmask_with_flags(spp_tree, tvb, 0, hf_spp_connection_control, ett_spp_connctrl,
								ctrl, ENC_NA, BMT_NO_FALSE);

	datastream_type = tvb_get_guint8(tvb, 1);
	datastream_type_string = spp_datastream(datastream_type);
	if (datastream_type_string != NULL) {
		col_append_fstr(pinfo->cinfo, COL_INFO, " (%s)", datastream_type_string);
	}
	if (tree) {
		if (datastream_type_string != NULL) {
			proto_tree_add_uint_format_value(spp_tree, hf_spp_datastream_type, tvb,
						   1, 1, datastream_type,
						   "%s (0x%02X)",
						   datastream_type_string,
						   datastream_type);
		} else {
			proto_tree_add_uint(spp_tree, hf_spp_datastream_type, tvb,
						   1, 1, datastream_type);
		}
		proto_tree_add_item(spp_tree, hf_spp_src_id, tvb,  2, 2, ENC_BIG_ENDIAN);