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-rw-r--r--epan/dissectors/packet-ccsds.c259
1 files changed, 259 insertions, 0 deletions
diff --git a/epan/dissectors/packet-ccsds.c b/epan/dissectors/packet-ccsds.c
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index 0000000000..b3292a672c
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+++ b/epan/dissectors/packet-ccsds.c
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+/* packet-ccsds.c
+ * Routines for CCSDS dissection
+ * Copyright 2000, Scott Hovis scott.hovis@ums.msfc.nasa.gov
+ *
+ * $Id$
+ *
+ * Ethereal - Network traffic analyzer
+ * By Gerald Combs <gerald@ethereal.com>
+ * 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include <glib.h>
+
+#ifdef NEED_SNPRINTF_H
+# include "snprintf.h"
+#endif
+
+#include <epan/packet.h>
+
+/*
+ * See
+ *
+ * http://stationpayloads.jsc.nasa.gov/J-reference/documents/ssp57002B.pdf
+ */
+
+/* Initialize the protocol and registered fields */
+static int proto_ccsds = -1;
+static int hf_ccsds_apid = -1;
+static int hf_ccsds_version = -1;
+static int hf_ccsds_secheader = -1;
+static int hf_ccsds_type = -1;
+static int hf_ccsds_seqnum = -1;
+static int hf_ccsds_seqflag = -1;
+static int hf_ccsds_length = -1;
+static int hf_ccsds_time = -1;
+static int hf_ccsds_timeid = -1;
+static int hf_ccsds_checkword = -1;
+static int hf_ccsds_zoe = -1;
+static int hf_ccsds_packtype = -1;
+static int hf_ccsds_vid = -1;
+static int hf_ccsds_dcc = -1;
+
+/* Initialize the subtree pointers */
+static gint ett_ccsds = -1;
+static gint ett_header = -1;
+static gint ett_header2 = -1;
+
+/*
+ * Bits in the first 16-bit header word
+ */
+#define HDR_VERSION 0xe000
+#define HDR_TYPE 0x1000
+#define HDR_SECHDR 0x0800
+#define HDR_APID 0x07ff
+
+/* Code to actually dissect the packets */
+static void
+dissect_ccsds(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
+{
+ int offset = 0;
+ proto_item *ti;
+ proto_tree *ccsds_tree;
+ proto_item *header;
+ proto_tree *header_tree;
+ guint16 first_word;
+ proto_item *header2;
+ proto_tree *header2_tree;
+
+ if (check_col(pinfo->cinfo, COL_PROTOCOL))
+ col_set_str(pinfo->cinfo, COL_PROTOCOL, "CCSDS");
+ if (check_col(pinfo->cinfo, COL_INFO))
+ col_set_str(pinfo->cinfo, COL_INFO, "CCSDS Packet");
+
+ if (tree) {
+ ti = proto_tree_add_item(tree, proto_ccsds, tvb, 0, -1, FALSE);
+ ccsds_tree = proto_item_add_subtree(ti, ett_ccsds);
+
+ header=proto_tree_add_text(ccsds_tree, tvb, 0, -1,
+ "Primary CCSDS Header");
+ header_tree=proto_item_add_subtree(header, ett_header);
+
+ first_word=tvb_get_ntohs(tvb, offset);
+ proto_tree_add_uint(header_tree, hf_ccsds_version, tvb, offset, 2, first_word);
+ proto_tree_add_uint(header_tree, hf_ccsds_type, tvb, offset, 2, first_word);
+ proto_tree_add_boolean(header_tree, hf_ccsds_secheader, tvb, offset, 2, first_word);
+ proto_tree_add_uint(header_tree, hf_ccsds_apid, tvb, offset, 2, first_word);
+ offset += 2;
+
+ proto_tree_add_item(header_tree, hf_ccsds_seqflag, tvb, offset, 2, FALSE);
+ proto_tree_add_item(header_tree, hf_ccsds_seqnum, tvb, offset, 2, FALSE);
+ offset += 2;
+
+ proto_tree_add_item(header_tree, hf_ccsds_length, tvb, offset, 2, FALSE);
+ offset += 2;
+ proto_item_set_end(header, tvb, offset);
+
+ if(first_word&HDR_SECHDR)
+ {
+ header2=proto_tree_add_text(ccsds_tree, tvb, offset, -1,
+ "Secondary CCSDS Header");
+ header2_tree=proto_item_add_subtree(header2, ett_header2);
+
+ proto_tree_add_item(header2_tree, hf_ccsds_time, tvb, offset, 5, FALSE);
+ offset += 5;
+
+ proto_tree_add_item(header2_tree, hf_ccsds_timeid, tvb, offset, 1, FALSE);
+ proto_tree_add_item(header2_tree, hf_ccsds_checkword, tvb, offset, 1, FALSE);
+ proto_tree_add_item(header2_tree, hf_ccsds_zoe, tvb, offset, 1, FALSE);
+ proto_tree_add_item(header2_tree, hf_ccsds_packtype, tvb, offset, 1, FALSE);
+ offset += 1;
+
+ proto_tree_add_item(header2_tree, hf_ccsds_vid, tvb, offset, 2, FALSE);
+ offset += 2;
+
+ proto_tree_add_item(header2_tree, hf_ccsds_dcc, tvb, offset, 2, FALSE);
+ offset += 2;
+ proto_item_set_end(header2, tvb, offset);
+ }
+
+ proto_tree_add_text(ccsds_tree, tvb, offset, -1,
+ "Data");
+ }
+}
+
+
+/* Register the protocol with Ethereal */
+/* this format is require because a script is used to build the C function
+ that calls all the protocol registration.
+*/
+void
+proto_register_ccsds(void)
+{
+
+/* Setup list of header fields See Section 1.6.1 for details*/
+ static hf_register_info hf[] = {
+ { &hf_ccsds_version,
+ { "version", "ccsds.version",
+ FT_UINT16, BASE_DEC, NULL, HDR_VERSION,
+ "version", HFILL }
+ },
+ { &hf_ccsds_type,
+ { "type", "ccsds.type",
+ FT_UINT16, BASE_DEC, NULL, HDR_TYPE,
+ "type", HFILL }
+ },
+ { &hf_ccsds_secheader,
+ { "secondary header", "ccsds.secheader",
+ FT_BOOLEAN, 16, NULL, HDR_SECHDR,
+ "secondary header present", HFILL }
+ },
+ { &hf_ccsds_apid,
+ { "APID", "ccsds.apid",
+ FT_UINT16, BASE_DEC, NULL, HDR_APID,
+ "Represents APID", HFILL }
+ },
+ { &hf_ccsds_seqflag,
+ { "sequence flags", "ccsds.seqflag",
+ FT_UINT16, BASE_DEC, NULL, 0xc000,
+ "sequence flags", HFILL }
+ },
+ { &hf_ccsds_seqnum,
+ { "sequence number", "ccsds.seqnum",
+ FT_UINT16, BASE_DEC, NULL, 0x3fff,
+ "sequence number", HFILL }
+ },
+ { &hf_ccsds_length,
+ { "packet length", "ccsds.length",
+ FT_UINT16, BASE_DEC, NULL, 0xffff,
+ "packet length", HFILL }
+ },
+ { &hf_ccsds_time,
+ { "time", "ccsds.time",
+ FT_BYTES, BASE_HEX, NULL, 0x0,
+ "time", HFILL }
+ },
+ { &hf_ccsds_timeid,
+ { "time identifier", "ccsds.timeid",
+ FT_UINT8, BASE_DEC, NULL, 0xC0,
+ "time identifier", HFILL }
+ },
+ { &hf_ccsds_checkword,
+ { "checkword indicator", "ccsds.checkword",
+ FT_UINT8, BASE_DEC, NULL, 0x20,
+ "checkword indicator", HFILL }
+ },
+ { &hf_ccsds_zoe,
+ { "ZOE TLM", "ccsds.zoe",
+ FT_UINT8, BASE_DEC, NULL, 0x10,
+ "CONTAINS S-BAND ZOE PACKETS", HFILL }
+ },
+ { &hf_ccsds_packtype,
+ { "packet type", "ccsds.packtype",
+ FT_UINT8, BASE_DEC, NULL, 0x0f,
+ "Packet Type - Unused in Ku-Band", HFILL }
+ },
+ { &hf_ccsds_vid,
+ { "version identifier", "ccsds.vid",
+ FT_UINT16, BASE_DEC, NULL, 0x0,
+ "version identifier", HFILL }
+ },
+ { &hf_ccsds_dcc,
+ { "Data Cycle Counter", "ccsds.dcc",
+ FT_UINT16, BASE_DEC, NULL, 0x0,
+ "Data Cycle Counter", HFILL }
+ },
+ };
+
+/* Setup protocol subtree array */
+ static gint *ett[] = {
+ &ett_ccsds,
+ &ett_header,
+ &ett_header2,
+ };
+
+/* Register the protocol name and description */
+ proto_ccsds = proto_register_protocol("CCSDS", "CCSDS", "CCSDS");
+
+/* Required function calls to register the header fields and subtrees used */
+ proto_register_field_array(proto_ccsds, hf, array_length(hf));
+ proto_register_subtree_array(ett, array_length(ett));
+
+}
+
+
+/* If this dissector uses sub-dissector registration add a registration routine.
+ This format is required because a script is used to find these routines and
+ create the code that calls these routines.
+*/
+void
+proto_reg_handoff_ccsds(void)
+{
+ dissector_handle_t ccsds_handle;
+
+ ccsds_handle = create_dissector_handle(dissect_ccsds,
+ proto_ccsds);
+ dissector_add_handle("udp.port", ccsds_handle);
+}
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