/*
* 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);
}
}
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);