From Ryan Wamsley:

Add Ethernet Global Data (EGD) packet dissector.


git-svn-id: http://anonsvn.wireshark.org/wireshark/trunk@25954 f5534014-38df-0310-8fa8-9805f1628bb7

1 files changed, 271 insertions, 0 deletions

diff --git a/epan/dissectors/packet-egd.c b/epan/dissectors/packet-egd.c
new file mode 100644
index 0000000000..c5f1dcbf41
--- /dev/null
+++ b/epan/dissectors/packet-egd.c
@@ -0,0 +1,271 @@
+/* packet-egd.c
+ * Routines for Ethernet Global Data dissection
+ * EGD Home: www.gefanuc.com
+ *
+ * Copyright 2008
+ * 29 July 2008 -- ryan wamsley
+ *
+ * $Id$
+ *
+ * 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif
+
+#include <string.h>
+#include <epan/packet.h>
+#include <epan/prefs.h>
+
+/* forward reference */
+void proto_register_egd();
+void proto_reg_handoff_egd();
+static void dissect_egd(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree);
+
+#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
+
+/* 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 global_egd_port = 18246; /* 0x4746 */
+static dissector_handle_t egd_handle;
+static dissector_handle_t data_handle;
+
+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 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,
+      "", HFILL }
+  },
+  { &hf_egd_exid,
+    { "ExchangeID", "egd.exid",
+      FT_UINT32, BASE_HEX,
+      NULL, 0x0,
+      NULL, HFILL }
+  },
+  { &hf_egd_time,
+    { "Timestamp", "egd.time",
+      FT_ABSOLUTE_TIME, BASE_DEC,
+      NULL, 0x0,
+      NULL, HFILL }
+  },
+  { &hf_egd_notime,
+    { "Timestamp", "egd.time",
+      FT_UINT64, BASE_HEX,
+      NULL, 0x0,
+      NULL, HFILL }
+  },
+  { &hf_egd_stat,
+    { "Status", "egd.stat",
+      FT_UINT32, BASE_DEC,
+      VALS(egd_stat_vals), 0x0,
+      "Status", 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
+};
+
+
+void proto_register_egd(void)
+{
+  if (proto_egd == -1)
+  {
+    proto_egd = proto_register_protocol (
+                    "Ethernet Global Data",  /* name */
+                    "EGD",                   /* short name */
+                    "egd"                    /* abbrev */
+                    );
+    proto_register_field_array(proto_egd, hf, array_length(hf));
+    proto_register_subtree_array(ett, array_length(ett));
+  }
+}
+
+
+void proto_reg_handoff_egd(void)
+{
+  static int initialized = FALSE;
+
+  if (!initialized)
+  {
+    /* find data dissector */
+    data_handle = find_dissector("data");
+
+    egd_handle = create_dissector_handle(dissect_egd, proto_egd);
+    dissector_add("udp.port", global_egd_port, egd_handle);
+    initialized = TRUE;
+  }
+}
+
+
+static void dissect_egd(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
+{
+  /* replace UDP with EGD in display */
+  if (check_col(pinfo->cinfo, COL_PROTOCOL))
+  {
+    col_set_str(pinfo->cinfo, COL_PROTOCOL, "EGD");
+  }
+
+  /* Clear out stuff in the info column */
+  if (check_col(pinfo->cinfo,COL_INFO))
+  {
+    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 stime;
+    nstime_t egd_time;
+
+    memset(&egd_time, 0, sizeof(nstime_t));
+    offset = 0;
+
+    ti = proto_tree_add_item(tree, proto_egd, tvb, 0, -1, FALSE);
+    egd_tree = proto_item_add_subtree(ti, ett_egd);
+    proto_tree_add_item(egd_tree, hf_egd_type, tvb, offset, 1, FALSE);
+    offset++;
+    proto_tree_add_item(egd_tree, hf_egd_ver, tvb, offset, 1, FALSE);
+    offset++;
+    proto_tree_add_item(egd_tree, hf_egd_rid, tvb, offset, 2, TRUE);
+    offset += 2;
+    proto_tree_add_item(egd_tree, hf_egd_pid, tvb, offset, 4, FALSE);
+    offset += 4;
+    proto_tree_add_item(egd_tree, hf_egd_exid, tvb, offset, 4, TRUE);
+    offset += 4;
+
+    /* time */
+    stime = tvb_get_ntohl(tvb, offset);
+    if (0 == stime)
+    {
+      notime = proto_tree_add_item(egd_tree, hf_egd_notime, tvb, offset, 8, FALSE);
+      proto_item_append_text(notime, "--No TimeStamp");
+    }
+    else
+    {
+      egd_time.secs  = tvb_get_ntohl(tvb, offset);
+      egd_time.nsecs = tvb_get_ntohl(tvb, offset+4);
+      proto_tree_add_time(egd_tree, hf_egd_time, tvb, offset, 8, &egd_time);
+    }
+    offset += 8;
+
+    proto_tree_add_item(egd_tree, hf_egd_stat, tvb, offset, 4, FALSE);
+    offset += 4;
+    proto_tree_add_item(egd_tree, hf_egd_csig, tvb, offset, 4, FALSE);
+    offset += 4;
+    proto_tree_add_item(egd_tree, hf_egd_resv, tvb, offset, 4, FALSE);
+    offset += 4;
+
+    data_length = tvb_length_remaining(tvb, offset);
+    if (data_length > 0)
+    {
+      next_tvb = tvb_new_subset(tvb, offset, -1, -1);
+      call_dissector(data_handle, next_tvb, pinfo, egd_tree);
+    }
+  }
+}