Adding upstream version 4.2.2.upstream/4.2.2

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 250 insertions, 0 deletions

diff --git a/epan/dissectors/packet-cnip.c b/epan/dissectors/packet-cnip.c
new file mode 100644
index 00000000..f5d802b3
--- /dev/null
+++ b/epan/dissectors/packet-cnip.c
@@ -0,0 +1,250 @@
+/* packet-cnip.c
+ * Traffic analyzer for the CN/IP (EIA-852) protocol
+ * Daniel Willmann <daniel@totalueberwachung.de>
+ * (c) 2011 Daniel Willmann
+ *
+ * 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 <epan/expert.h>
+
+#define DATA_PACKET 0x01
+
+#define CNIP_UDP_PORT_RANGE "1628-1629" /* Not IANA registered */
+
+static const value_string type_tuple[]=
+{
+   {0x01, "Data Packet"},
+   {0x63, "Device Configuration Request"},
+   {0x03, "Device Registration"},
+   {0x71, "Device Configuration"},
+   {0x64, "Channel Membership Request"},
+   {0x04, "Channel Membership"},
+   {0x66, "Send List Request"},
+   {0x06, "Send List"},
+   {0x68, "Channel Routing Request"},
+   {0x08, "Channel Routing"},
+   {0x07, "Acknowledge"},
+   {0x7F, "Segment"},
+   {0x60, "Status/Health/Statistics Request"},
+   {0x70, "Status/Health/Statistics Response"},
+   {0, NULL}
+};
+
+void proto_register_cnip(void);
+void proto_reg_handoff_cnip(void);
+
+static dissector_handle_t cnip_handle;
+
+static gint hf_cnip_len      = -1;
+static gint hf_cnip_ver      = -1;
+static gint hf_cnip_type     = -1;
+static gint hf_cnip_exth     = -1;
+static gint hf_cnip_pf       = -1;
+static gint hf_cnip_pf_sec   = -1;
+static gint hf_cnip_pf_pcode = -1;
+static gint hf_cnip_vcode    = -1;
+static gint hf_cnip_sessid   = -1;
+static gint hf_cnip_seqno    = -1;
+static gint hf_cnip_tstamp   = -1;
+
+static gint proto_cnip       = -1;
+
+static gint ett_cnip         = -1;
+static gint ett_pf           = -1;
+
+static expert_field ei_cnip_type_unknown = EI_INIT;
+
+static dissector_table_t cnip_dissector_table;
+
+static int dissect_cnip (tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data _U_)
+{
+   tvbuff_t *next_tvb;
+   gint offset;
+   gint type, exth_len, pf_pcode;
+
+   proto_tree *ti;
+   proto_tree *cnip_tree;
+
+   static int * const pf_fields[] = {
+      &hf_cnip_pf_sec,
+      &hf_cnip_pf_pcode,
+      NULL
+   };
+
+   col_set_str(pinfo->cinfo, COL_PROTOCOL, "CN/IP");
+   col_clear(pinfo->cinfo, COL_INFO);
+
+   type = tvb_get_guint8(tvb, 3);
+   col_add_fstr(pinfo->cinfo, COL_INFO,"Priority: %s Type: %s",
+         (pinfo->destport == 1629 )? "urgent":"normal",
+         val_to_str_const(type, type_tuple, "Unknown"));
+
+   exth_len = tvb_get_guint8(tvb, 4);
+   pf_pcode = tvb_get_guint8(tvb, 5) & 0x1F;
+
+   offset = 0;
+
+   /* Take whole packet for now, we'll adjust it later */
+   ti = proto_tree_add_item(tree, proto_cnip, tvb, offset, -1, ENC_NA);
+   cnip_tree = proto_item_add_subtree(ti, ett_cnip);
+
+   proto_tree_add_item(cnip_tree, hf_cnip_len, tvb, offset, 2, ENC_BIG_ENDIAN);
+   offset += 2;
+
+   proto_tree_add_item(cnip_tree, hf_cnip_ver, tvb, offset, 1, ENC_BIG_ENDIAN);
+   offset += 1;
+
+   proto_tree_add_item(cnip_tree, hf_cnip_type, tvb, offset, 1, ENC_BIG_ENDIAN);
+   offset += 1;
+
+   proto_tree_add_item(cnip_tree, hf_cnip_exth, tvb, offset, 1, ENC_BIG_ENDIAN);
+   offset += 1;
+
+   proto_tree_add_bitmask(cnip_tree, tvb, offset,
+         hf_cnip_pf, ett_pf, pf_fields, ENC_BIG_ENDIAN);
+   offset += 1;
+
+   proto_tree_add_item(cnip_tree, hf_cnip_vcode, tvb, offset, 2, ENC_BIG_ENDIAN);
+   offset += 2;
+
+   proto_tree_add_item(cnip_tree, hf_cnip_sessid, tvb, offset, 4, ENC_BIG_ENDIAN);
+   offset += 4;
+
+   proto_tree_add_item(cnip_tree, hf_cnip_seqno, tvb, offset, 4, ENC_BIG_ENDIAN);
+   offset += 4;
+
+   proto_tree_add_item(cnip_tree, hf_cnip_tstamp, tvb, offset, 4, ENC_BIG_ENDIAN);
+   offset += 4;
+
+   /* Jump over any unknown header extensions */
+   offset += 4 * exth_len;
+
+   proto_item_set_len(ti, offset);
+
+   next_tvb = tvb_new_subset_remaining(tvb, offset);
+   if (type == DATA_PACKET) {
+      if (dissector_try_uint(cnip_dissector_table, pf_pcode, next_tvb, pinfo, tree))
+         return tvb_captured_length(tvb);
+   }
+   else {
+      expert_add_info_format(pinfo, cnip_tree, &ei_cnip_type_unknown,
+            "This dissector doesn't yet decode packets of type %s (0x%x)",
+            val_to_str_const(type, type_tuple, "Unknown"), type);
+   }
+   call_data_dissector(next_tvb, pinfo, tree);
+   return tvb_captured_length(tvb);
+}
+
+void proto_register_cnip(void)
+{
+   static hf_register_info hf[] =
+   {
+      {&hf_cnip_len,
+         {"Packet length", "cnip.len",
+            FT_UINT16, BASE_DEC, NULL, 0,
+            NULL, HFILL }
+      },
+      {&hf_cnip_ver,
+         {"Version", "cnip.ver",
+            FT_UINT8, BASE_DEC, NULL, 0,
+            NULL, HFILL }
+      },
+      {&hf_cnip_type,
+         {"Packet type", "cnip.type",
+            FT_UINT8, BASE_HEX, VALS(type_tuple), 0,
+            NULL, HFILL }
+      },
+      {&hf_cnip_exth,
+         {"Ext. Header Size", "cnip.exth",
+            FT_UINT8, BASE_DEC, NULL, 0,
+            NULL, HFILL }
+      },
+      {&hf_cnip_pf,
+         {"Protocol Flags", "cnip.pf",
+            FT_UINT8, BASE_DEC, NULL, 0,
+            NULL, HFILL }
+      },
+      {&hf_cnip_pf_sec,
+         {"Protocol Flags", "cnip.sec",
+            FT_UINT8, BASE_DEC, NULL, 0x20,
+            NULL, HFILL }
+      },
+      {&hf_cnip_pf_pcode,
+         {"Protocol Code", "cnip.protocol",
+            FT_UINT8, BASE_DEC, NULL, 0x1F,
+            NULL, HFILL }
+      },
+      {&hf_cnip_vcode,
+         {"Vendor Code", "cnip.vendorcode",
+            FT_UINT16, BASE_DEC, NULL, 0,
+            NULL, HFILL }
+      },
+      {&hf_cnip_sessid,
+         {"Session ID", "cnip.sessid",
+            FT_UINT32, BASE_DEC, NULL, 0,
+            NULL, HFILL }
+      },
+      {&hf_cnip_seqno,
+         {"Sequence Number", "cnip.seqno",
+            FT_UINT32, BASE_DEC, NULL, 0,
+            NULL, HFILL }
+      },
+      {&hf_cnip_tstamp,
+         {"Time Stamp", "cnip.tstamp",
+            FT_UINT32, BASE_DEC, NULL, 0,
+            NULL, HFILL }
+      }
+   };
+
+   static gint *ett[] =
+   {
+      &ett_cnip,
+      &ett_pf
+   };
+
+   static ei_register_info ei[] = {
+      { &ei_cnip_type_unknown, { "cnip.type.unknown", PI_UNDECODED, PI_WARN, "This dissector doesn't yet decode packets of type", EXPFILL }},
+   };
+
+   expert_module_t* expert_cnip;
+
+   proto_cnip = proto_register_protocol("Component Network over IP",
+         "CN/IP", "cnip");
+
+   proto_register_field_array(proto_cnip, hf, array_length (hf));
+   proto_register_subtree_array(ett, array_length (ett));
+   expert_cnip = expert_register_protocol(proto_cnip);
+   expert_register_field_array(expert_cnip, ei, array_length(ei));
+
+   /* Register table for subdissectors */
+   cnip_dissector_table = register_dissector_table("cnip.protocol",
+         "CN/IP Protocol", proto_cnip, FT_UINT8, BASE_DEC);
+
+   cnip_handle = register_dissector("cnip", dissect_cnip, proto_cnip);
+}
+
+void proto_reg_handoff_cnip(void)
+{
+   dissector_add_uint_range_with_preference("udp.port", CNIP_UDP_PORT_RANGE, cnip_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:
+ */