1 files changed, 124 insertions, 0 deletions
diff --git a/epan/dissectors/packet-dvb-tot.c b/epan/dissectors/packet-dvb-tot.c
new file mode 100644
index 00000000..1f4a2d40
--- /dev/null
+++ b/epan/dissectors/packet-dvb-tot.c
@@ -0,0 +1,124 @@
+/* packet-dvb-tot.c
+ * Routines for DVB (ETSI EN 300 468) Time Offset Table (TOT) dissection
+ * Copyright 2012, Guy Martin <gmsoft@tuxicoman.be>
+ *
+ * Wireshark - Network traffic analyzer
+ * By Gerald Combs <gerald@wireshark.org>
+ * Copyright 1998 Gerald Combs
+ *
+ * SPDX-License-Identifier: GPL-2.0-or-later
+ */
+
+#include "config.h"
+
+#include <epan/packet.h>
+#include "packet-mpeg-sect.h"
+
+#include "packet-mpeg-descriptor.h"
+
+void proto_register_dvb_tot(void);
+void proto_reg_handoff_dvb_tot(void);
+
+static dissector_handle_t dvb_tot_handle;
+
+static int proto_dvb_tot = -1;
+static int hf_dvb_tot_utc_time = -1;
+static int hf_dvb_tot_reserved = -1;
+static int hf_dvb_tot_descriptors_loop_length = -1;
+
+static gint ett_dvb_tot = -1;
+
+#define DVB_TOT_RESERVED_MASK                   0xF000
+#define DVB_TOT_DESCRIPTORS_LOOP_LENGTH_MASK    0x0FFF
+
+static int
+dissect_dvb_tot(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data _U_)
+{
+    guint       offset = 0;
+    guint       descriptor_len;
+
+    proto_item *ti;
+    proto_tree *dvb_tot_tree;
+
+    nstime_t    utc_time;
+
+    col_set_str(pinfo->cinfo, COL_INFO, "Time Offset Table (TOT)");
+
+    ti = proto_tree_add_item(tree, proto_dvb_tot, tvb, offset, -1, ENC_NA);
+    dvb_tot_tree = proto_item_add_subtree(ti, ett_dvb_tot);
+
+    offset += packet_mpeg_sect_header(tvb, offset, dvb_tot_tree, NULL, NULL);
+
+    if (packet_mpeg_sect_mjd_to_utc_time(tvb, offset, &utc_time) < 0) {
+        proto_tree_add_time_format_value(dvb_tot_tree, hf_dvb_tot_utc_time, tvb, offset, 5, &utc_time, "Unparseable time");
+    } else {
+        proto_tree_add_time(dvb_tot_tree, hf_dvb_tot_utc_time, tvb, offset, 5, &utc_time);
+    }
+
+    offset += 5;
+
+    descriptor_len = tvb_get_ntohs(tvb, offset) & DVB_TOT_DESCRIPTORS_LOOP_LENGTH_MASK;
+    proto_tree_add_item(dvb_tot_tree, hf_dvb_tot_reserved, tvb, offset, 2, ENC_BIG_ENDIAN);
+    proto_tree_add_item(dvb_tot_tree, hf_dvb_tot_descriptors_loop_length, tvb, offset, 2, ENC_BIG_ENDIAN);
+    offset += 2;
+
+    offset += proto_mpeg_descriptor_loop_dissect(tvb, offset, descriptor_len, dvb_tot_tree);
+
+    offset += packet_mpeg_sect_crc(tvb, pinfo, dvb_tot_tree, 0, offset);
+    proto_item_set_len(ti, offset);
+    return tvb_captured_length(tvb);
+}
+
+
+void
+proto_register_dvb_tot(void)
+{
+
+    static hf_register_info hf[] = {
+
+        { &hf_dvb_tot_utc_time, {
+            "UTC Time", "dvb_tot.utc_time",
+            FT_ABSOLUTE_TIME, ABSOLUTE_TIME_UTC, NULL, 0, NULL, HFILL
+        } },
+
+        { &hf_dvb_tot_reserved, {
+            "Reserved", "dvb_tot.reserved",
+            FT_UINT16, BASE_HEX, NULL, DVB_TOT_RESERVED_MASK, NULL, HFILL
+        } },
+
+        { &hf_dvb_tot_descriptors_loop_length, {
+             "Descriptors Loop Length", "dvb_tot.descr_loop_len",
+             FT_UINT16, BASE_DEC, NULL, DVB_TOT_DESCRIPTORS_LOOP_LENGTH_MASK, NULL, HFILL
+        } }
+    };
+
+    static gint *ett[] = {
+        &ett_dvb_tot
+    };
+
+    proto_dvb_tot = proto_register_protocol("DVB Time Offset Table", "DVB TOT", "dvb_tot");
+
+    proto_register_field_array(proto_dvb_tot, hf, array_length(hf));
+    proto_register_subtree_array(ett, array_length(ett));
+
+    dvb_tot_handle = register_dissector("dvb_tot", dissect_dvb_tot, proto_dvb_tot);
+}
+
+
+void proto_reg_handoff_dvb_tot(void)
+{
+    dissector_add_uint("mpeg_sect.tid", DVB_TOT_TID, dvb_tot_handle);
+}
+
+/*
+ * Editor modelines  -  https://www.wireshark.org/tools/modelines.html
+ *
+ * Local variables:
+ * c-basic-offset: 4
+ * tab-width: 8
+ * indent-tabs-mode: nil
+ * End:
+ *
+ * vi: set shiftwidth=4 tabstop=8 expandtab:
+ * :indentSize=4:tabSize=8:noTabs=true:
+ */