--- /dev/null
+/* packet-dvb-data-mpe.c
+ * Routines for DVB-DATA (ETSI EN 301 192) MultiProtocol Encapsulation
+ * Copyright 2012, Guy Martin <gmsoft@tuxicoman.be>
+ *
+ * $Id$
+ *
+ * Wireshark - Network traffic analyzer
+ * By Gerald Combs <gerald@wireshark.org>
+ * Copyright 1998 Gerald Combs
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif
+
+#include <glib.h>
+
+#include <epan/packet.h>
+#include <epan/prefs.h>
+
+static int proto_dvb_data_mpe = -1;
+static int hf_dvb_data_mpe_reserved = -1;
+static int hf_dvb_data_mpe_payload_scrambling_control = -1;
+static int hf_dvb_data_mpe_address_scrambling_control = -1;
+static int hf_dvb_data_mpe_llc_snap_flag = -1;
+static int hf_dvb_data_mpe_current_next_indicator = -1;
+static int hf_dvb_data_mpe_section_number = -1;
+static int hf_dvb_data_mpe_last_section_number = -1;
+static int hf_dvb_data_mpe_dst_mac = -1;
+
+static gint ett_dvb_data_mpe = -1;
+
+static dissector_handle_t ip_handle;
+static dissector_handle_t llc_handle;
+
+#define DVB_DATA_MPE_TID 0x3E
+
+
+#define DVB_DATA_MPE_RESERVED_MASK 0xC0
+#define DVB_DATA_MPE_PAYLOAD_SCRAMBLING_MASK 0x30
+#define DVB_DATA_MPE_ADDRESS_SCRAMBLING_MASK 0x0C
+#define DVB_DATA_MPE_LLC_SNAP_FLAG_MASK 0x02
+#define DVB_DATA_MPE_CURRENT_NEXT_INDICATOR_MASK 0x01
+
+static const value_string dvb_rcs_cur_next_vals[] = {
+
+ { 0x0, "Not yet applicable" },
+ { 0x1, "Currently applicable" },
+ { 0, NULL },
+
+};
+
+
+void
+dissect_dvb_data_mpe(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
+{
+
+ guint offset = 0;
+ guint8 llc_snap_flag = 0;
+ int i;
+
+ proto_item *ti = NULL;
+ proto_tree *dvb_data_mpe_tree = NULL;
+ tvbuff_t *mac_tvb = NULL;
+ tvbuff_t *mac_bytes_tvb[6] = {0};
+ tvbuff_t *data_tvb = NULL;
+
+ /* The TVB should start right after the section_length in the Section packet */
+
+ col_clear(pinfo->cinfo, COL_PROTOCOL);
+ col_set_str(pinfo->cinfo, COL_PROTOCOL, "DVB-DATA");
+ col_clear(pinfo->cinfo, COL_INFO);
+ col_set_str(pinfo->cinfo, COL_INFO, "MultiProtocol Encapsulation");
+
+ if (!tree)
+ return;
+
+ ti = proto_tree_add_item(tree, proto_dvb_data_mpe, tvb, offset, -1, ENC_NA);
+ dvb_data_mpe_tree = proto_item_add_subtree(ti, ett_dvb_data_mpe);
+
+ /* Parse the DMC-CC private section header */
+
+ mac_bytes_tvb[5] = tvb_new_subset(tvb, offset, 1, 1);
+ offset++;
+ mac_bytes_tvb[4] = tvb_new_subset(tvb, offset, 1, 1);
+ offset++;
+
+ proto_tree_add_item(dvb_data_mpe_tree, hf_dvb_data_mpe_reserved, tvb, offset, 1, ENC_BIG_ENDIAN);
+ proto_tree_add_item(dvb_data_mpe_tree, hf_dvb_data_mpe_payload_scrambling_control, tvb, offset, 1, ENC_BIG_ENDIAN);
+ proto_tree_add_item(dvb_data_mpe_tree, hf_dvb_data_mpe_address_scrambling_control, tvb, offset, 1, ENC_BIG_ENDIAN);
+ proto_tree_add_item(dvb_data_mpe_tree, hf_dvb_data_mpe_llc_snap_flag, tvb, offset, 1, ENC_BIG_ENDIAN);
+ proto_tree_add_item(dvb_data_mpe_tree, hf_dvb_data_mpe_current_next_indicator, tvb, offset, 1, ENC_BIG_ENDIAN);
+ llc_snap_flag = tvb_get_guint8(tvb, offset) & DVB_DATA_MPE_LLC_SNAP_FLAG_MASK;
+ offset++;
+
+ proto_tree_add_item(dvb_data_mpe_tree, hf_dvb_data_mpe_section_number, tvb, offset, 1, ENC_BIG_ENDIAN);
+ offset++;
+
+ proto_tree_add_item(dvb_data_mpe_tree, hf_dvb_data_mpe_last_section_number, tvb, offset, 1, ENC_BIG_ENDIAN);
+ offset++;
+
+ for (i = 3; i >= 0; i--) {
+ mac_bytes_tvb[i] = tvb_new_subset(tvb, offset, 1, 1);
+ offset++;
+ }
+
+ mac_tvb = tvb_new_composite();
+
+ for (i = 0; i < 6; i++)
+ tvb_composite_append(mac_tvb, mac_bytes_tvb[i]);
+
+ tvb_composite_finalize(mac_tvb);
+
+ proto_tree_add_item(dvb_data_mpe_tree, hf_dvb_data_mpe_dst_mac, mac_tvb, 0 , 6, ENC_NA);
+ col_clear(pinfo->cinfo, COL_RES_DL_DST);
+ col_add_str(pinfo->cinfo, COL_RES_DL_DST, tvb_ether_to_str(mac_tvb, 0));
+
+ data_tvb = tvb_new_subset(tvb, offset, -1, -1);
+
+ if (llc_snap_flag) {
+ call_dissector(llc_handle, data_tvb, pinfo, tree);
+ } else {
+ call_dissector(ip_handle, data_tvb, pinfo, tree);
+ }
+
+
+
+ return;
+
+}
+
+void
+proto_register_dvb_data_mpe(void)
+{
+
+ static hf_register_info hf[] = {
+
+ /* DSM-CC common fields */
+ { &hf_dvb_data_mpe_reserved, {
+ "Reserved", "dvb_data_mpe.reserved",
+ FT_UINT8, BASE_HEX, NULL, DVB_DATA_MPE_RESERVED_MASK, NULL, HFILL
+ } },
+
+ { &hf_dvb_data_mpe_payload_scrambling_control, {
+ "Payload Scrambling Control", "dvb_data_mpe.pload_scrambling",
+ FT_UINT8, BASE_HEX, NULL, DVB_DATA_MPE_PAYLOAD_SCRAMBLING_MASK, NULL, HFILL
+ } },
+
+ { &hf_dvb_data_mpe_address_scrambling_control, {
+ "Address Scrambling Control", "dvb_data_mpe.addr_scrambling",
+ FT_UINT8, BASE_HEX, NULL, DVB_DATA_MPE_ADDRESS_SCRAMBLING_MASK, NULL, HFILL
+ } },
+
+ { &hf_dvb_data_mpe_llc_snap_flag, {
+ "LLC SNAP Flag", "dvb_data_mpe.llc_snap_flag",
+ FT_UINT8, BASE_HEX, NULL, DVB_DATA_MPE_LLC_SNAP_FLAG_MASK, NULL, HFILL
+ } },
+
+ { &hf_dvb_data_mpe_current_next_indicator, {
+ "Current/Next Indicator", "mpeg_sect.cur_next_ind",
+ FT_UINT8, BASE_HEX, VALS(dvb_rcs_cur_next_vals), DVB_DATA_MPE_CURRENT_NEXT_INDICATOR_MASK, NULL, HFILL
+ } },
+
+ { &hf_dvb_data_mpe_section_number, {
+ "Section Number", "dvb_data_mpe.sect_num",
+ FT_UINT8, BASE_DEC, NULL, 0, NULL, HFILL
+ } },
+
+ { &hf_dvb_data_mpe_last_section_number, {
+ "Last Section Number", "dvb_data_mpe.last_sect_num",
+ FT_UINT8, BASE_DEC, NULL, 0, NULL, HFILL
+ } },
+
+ { &hf_dvb_data_mpe_dst_mac, {
+ "Destination MAC address", "dvb_data_mpe.dst_mac",
+ FT_BYTES, BASE_NONE, NULL, 0, NULL, HFILL
+ } },
+
+
+ };
+
+ static gint *ett[] = {
+ &ett_dvb_data_mpe,
+ };
+
+ proto_dvb_data_mpe = proto_register_protocol("DVB-DATA MultiProtocol Encapsulation", "DVB-DATA MPE", "dvb_data_mpe");
+ proto_register_field_array(proto_dvb_data_mpe, hf, array_length(hf));
+
+ proto_register_subtree_array(ett, array_length(ett));
+
+}
+
+
+void
+proto_reg_handoff_dvb_data_mpe(void)
+{
+ dissector_handle_t dvb_data_mpe_handle;
+
+ dvb_data_mpe_handle = create_dissector_handle(dissect_dvb_data_mpe, proto_dvb_data_mpe);
+ dissector_add_uint("mpeg_sect.tid", DVB_DATA_MPE_TID, dvb_data_mpe_handle);
+
+ ip_handle = find_dissector("ip");
+ llc_handle = find_dissector("llc");
+
+}
git.samba.org / metze / wireshark / wip.git / commitdiff