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-rw-r--r--epan/dissectors/packet-egd.c249
1 files changed, 249 insertions, 0 deletions
diff --git a/epan/dissectors/packet-egd.c b/epan/dissectors/packet-egd.c
new file mode 100644
index 00000000..7aed5d76
--- /dev/null
+++ b/epan/dissectors/packet-egd.c
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+/* packet-egd.c
+ * Routines for Ethernet Global Data dissection
+ * EGD Home: www.gefanuc.com
+ *
+ * Copyright 2008
+ * 29 July 2008 -- ryan wamsley
+ *
+ * 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>
+
+#define EGD_PORT 18246 /* 0x4746 "GF" for GE Fanuc - Not IANA registered */
+/* The above port is used for data packets. UDP port 7937 (also not registered)
+ * is used for configuration commands, but this dissector doesn't support them.
+ */
+
+#define EGD_ST_NONEW 0
+#define EGD_ST_NOERROR 1
+#define EGD_ST_CONSUMED 2
+#define EGD_ST_SNTPERR 3
+#define EGD_ST_SPECERR 4
+#define EGD_ST_REFRESHERR 6
+#define EGD_ST_REFEXDERR 7
+#define EGD_ST_IPERR 10
+#define EGD_ST_RESOURSEERR 12
+#define EGD_ST_NAMERES 16
+#define EGD_ST_ETHERR 18
+#define EGD_ST_NOSUPPORT 22
+#define EGD_ST_NORESP 26
+#define EGD_ST_CREATEERR 28
+#define EGD_ST_DELETED 30
+
+
+void proto_register_egd(void);
+void proto_reg_handoff_egd(void);
+
+static dissector_handle_t egd_handle;
+
+/* Translate status to string */
+static const value_string egd_stat_vals[] = {
+ { EGD_ST_NONEW, "No new status event has occurred" },
+ { EGD_ST_NOERROR, "No error currently exists" },
+ { EGD_ST_CONSUMED, "No error, data consumed" },
+ { EGD_ST_SNTPERR, "SNTP error" },
+ { EGD_ST_SPECERR, "Specification error" },
+ { EGD_ST_REFRESHERR, "Data refresh error" },
+ { EGD_ST_REFEXDERR, "Data refresh period exceeded" },
+ { EGD_ST_IPERR, "IP Layer not currently initialized" },
+ { EGD_ST_RESOURSEERR, "Lack of resource error" },
+ { EGD_ST_NAMERES, "Name Resolution in progress" },
+ { EGD_ST_ETHERR, "Loss of Ethernet Interface error" },
+ { EGD_ST_NOSUPPORT, "Ethernet Interface does not support EGD" },
+ { EGD_ST_NORESP, "No Response from Ethernet Interface" },
+ { EGD_ST_CREATEERR, "Failed to create an exchange." },
+ { EGD_ST_DELETED, "Configured exchange deleted." },
+ { 0, NULL }
+};
+
+static int proto_egd = -1;
+
+static int hf_egd_ver = -1;
+static int hf_egd_type = -1;
+static int hf_egd_rid = -1;
+static int hf_egd_pid = -1;
+static int hf_egd_exid = -1;
+static int hf_egd_time = -1;
+static int hf_egd_notime = -1;
+static int hf_egd_stat = -1;
+static int hf_egd_csig = -1;
+static int hf_egd_resv = -1;
+
+static gint ett_egd = -1;
+static gint ett_status_item = -1;
+
+static int dissect_egd(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data _U_)
+{
+ /* EGD Data messages are PDU type 13 (0x0d) and version 1.
+ * All other PDU types are Control messages, which are sent to a different
+ * port, each have a different format, and not handled by this dissector.
+ */
+ if (tvb_get_ntohs(tvb, 0) != 0x0d01) {
+ return 0;
+ }
+
+ /* replace UDP with EGD in display */
+ col_set_str(pinfo->cinfo, COL_PROTOCOL, "EGD");
+
+ /* Clear out stuff in the info column */
+ col_clear(pinfo->cinfo, COL_INFO);
+ col_add_fstr(pinfo->cinfo, COL_INFO, "Data Msg: ExchangeID=0x%08X, RequestID=%05u",
+ tvb_get_letohl(tvb, 8), tvb_get_letohs(tvb, 2));
+
+ if (tree)
+ {
+ proto_item *ti = NULL;
+ proto_item *notime = NULL;
+ proto_tree *egd_tree = NULL;
+ tvbuff_t *next_tvb = NULL;
+ gint offset, data_length;
+ guint32 sectime;
+
+ offset = 0;
+
+ ti = proto_tree_add_item(tree, proto_egd, tvb, 0, -1, ENC_NA);
+ egd_tree = proto_item_add_subtree(ti, ett_egd);
+ proto_tree_add_item(egd_tree, hf_egd_type, tvb, offset, 1, ENC_LITTLE_ENDIAN);
+ offset++;
+ proto_tree_add_item(egd_tree, hf_egd_ver, tvb, offset, 1, ENC_LITTLE_ENDIAN);
+ offset++;
+ proto_tree_add_item(egd_tree, hf_egd_rid, tvb, offset, 2, ENC_LITTLE_ENDIAN);
+ offset += 2;
+ proto_tree_add_item(egd_tree, hf_egd_pid, tvb, offset, 4, ENC_BIG_ENDIAN);
+ offset += 4;
+ proto_tree_add_item(egd_tree, hf_egd_exid, tvb, offset, 4, ENC_LITTLE_ENDIAN);
+ offset += 4;
+
+ /* time */
+ sectime = tvb_get_letohl(tvb, offset);
+ if (0 == sectime)
+ {
+ notime = proto_tree_add_item(egd_tree, hf_egd_notime, tvb, offset, 8, ENC_LITTLE_ENDIAN);
+ proto_item_append_text(notime, "--No TimeStamp");
+ }
+ else
+ {
+ proto_tree_add_item(egd_tree, hf_egd_time, tvb, offset, 8, ENC_LITTLE_ENDIAN);
+ }
+ offset += 8;
+
+ proto_tree_add_item(egd_tree, hf_egd_stat, tvb, offset, 4, ENC_LITTLE_ENDIAN);
+ offset += 4;
+ proto_tree_add_item(egd_tree, hf_egd_csig, tvb, offset, 4, ENC_LITTLE_ENDIAN);
+ offset += 4;
+ proto_tree_add_item(egd_tree, hf_egd_resv, tvb, offset, 4, ENC_LITTLE_ENDIAN);
+ offset += 4;
+
+ data_length = tvb_reported_length_remaining(tvb, offset);
+ if (data_length > 0)
+ {
+ next_tvb = tvb_new_subset_remaining(tvb, offset);
+ call_data_dissector(next_tvb, pinfo, egd_tree);
+ }
+ }
+ return tvb_captured_length(tvb);
+}
+
+void proto_register_egd(void)
+{
+ static hf_register_info hf[] =
+ {
+ { &hf_egd_ver,
+ { "Version", "egd.ver",
+ FT_UINT8, BASE_DEC,
+ NULL, 0x0,
+ NULL, HFILL }
+ },
+ { &hf_egd_type,
+ { "Type", "egd.type",
+ FT_UINT8, BASE_DEC,
+ NULL, 0x0,
+ NULL, HFILL }
+ },
+ { &hf_egd_rid,
+ { "RequestID", "egd.rid",
+ FT_UINT16, BASE_DEC,
+ NULL, 0x0,
+ NULL, HFILL }
+ },
+ { &hf_egd_pid,
+ { "ProducerID", "egd.pid",
+ FT_IPv4, BASE_NONE,
+ NULL, 0x0,
+ NULL, HFILL }
+ },
+ { &hf_egd_exid,
+ { "ExchangeID", "egd.exid",
+ FT_UINT32, BASE_HEX,
+ NULL, 0x0,
+ NULL, HFILL }
+ },
+ { &hf_egd_time,
+ { "Timestamp", "egd.time",
+ FT_ABSOLUTE_TIME, ABSOLUTE_TIME_LOCAL,
+ NULL, 0x0,
+ NULL, HFILL }
+ },
+ { &hf_egd_notime,
+ { "Timestamp", "egd.notime",
+ FT_UINT64, BASE_HEX,
+ NULL, 0x0,
+ NULL, HFILL }
+ },
+ { &hf_egd_stat,
+ { "Status", "egd.stat",
+ FT_UINT32, BASE_DEC,
+ VALS(egd_stat_vals), 0x0,
+ NULL, HFILL }
+ },
+ { &hf_egd_csig,
+ { "ConfigSignature", "egd.csig",
+ FT_UINT32, BASE_DEC,
+ NULL, 0x0,
+ NULL, HFILL }
+ },
+ { &hf_egd_resv,
+ { "Reserved", "egd.rsrv",
+ FT_UINT32, BASE_DEC,
+ NULL, 0x0,
+ NULL, HFILL }
+ }
+ };
+
+ static gint *ett[] =
+ {
+ &ett_egd,
+ &ett_status_item
+ };
+
+ proto_egd = proto_register_protocol ("Ethernet Global Data", "EGD", "egd");
+ proto_register_field_array(proto_egd, hf, array_length(hf));
+ proto_register_subtree_array(ett, array_length(ett));
+
+ egd_handle = register_dissector("egd", dissect_egd, proto_egd);
+}
+
+void proto_reg_handoff_egd(void)
+{
+ dissector_add_uint_with_preference("udp.port", EGD_PORT, egd_handle);
+}
+
+/*
+ * Editor modelines - https://www.wireshark.org/tools/modelines.html
+ *
+ * Local Variables:
+ * c-basic-offset: 2
+ * tab-width: 8
+ * indent-tabs-mode: nil
+ * End:
+ *
+ * ex: set shiftwidth=2 tabstop=8 expandtab:
+ * :indentSize=2:tabSize=8:noTabs=true:
+ */
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