Adding upstream version 4.2.2.upstream/4.2.2

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

1 files changed, 592 insertions, 0 deletions

diff --git a/epan/dissectors/packet-pdc.c b/epan/dissectors/packet-pdc.c
new file mode 100644
index 00000000..1bc4a5f2
--- /dev/null
+++ b/epan/dissectors/packet-pdc.c
@@ -0,0 +1,592 @@
+/* packet-pdc.c
+ * Routines for PDC dissection
+ * Copyright 2014, Antony Bridle <antony.bridle@nats.co.uk>
+ *
+ * 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-tcp.h"
+
+void proto_register_pdc(void);
+void proto_reg_handoff_pdc(void);
+
+/*PDC Protocol*/
+#define PDC_PROCOTOL "PDC"
+
+/* PDC version */
+#define PDC_VERSION 2
+
+#define SIMPDU	1
+#define RSMPDU	2
+#define DRMPDU	3
+#define DTMPDU	4
+#define ADMPDU	5
+#define EDMPDU	6
+#define AKMPDU	8
+
+/*Variable length Parameter Codes*/
+#define PARAM_CODE_VERSION	2
+#define PARAM_CODE_REFERENCES	3
+#define PARAM_CODE_TRANSPORT	4
+
+/* required for the TCP split packet combining */
+#define PDC_MSG_SIZE_FIELD_LENGTH 2 /* minimum amount of data to find out how big the split packet should be when recombined */
+#define FRAME_HEADER_LEN 8
+
+/* global handle for our dissector */
+static dissector_handle_t pdc_tcp_handle;
+
+/* global handle for calling asterix decoder if required */
+static dissector_handle_t asterix_handle;
+
+static int		  proto_pdc	     = -1;
+
+/*HF Declarations*/
+static gint hf_pdc_len = -1;
+static gint hf_pdc_mpdu_code = -1;
+static gint hf_pdc_credit = -1;
+static gint hf_pdc_simpdu_state = -1;
+static gint hf_pdc_yr_admu_nr =-1;
+static gint hf_pdc_akmpdu_mns = -1;
+static gint hf_pdc_akmpdu_cdt = -1;
+static gint hf_pdc_simpdu_var = -1;
+static gint hf_pdc_simpdu_var_len = -1;
+static gint hf_pdc_simpdu_param = -1;
+static gint hf_pdc_simpdu_var_version = -1;
+static gint hf_pdc_simpdu_var_REFSRC = -1;
+static gint hf_pdc_simpdu_var_REFDEST = -1;
+static gint hf_pdc_simpdu_var_TSEL = -1;
+static gint hf_pdc_drmpdu_abort = -1;
+static gint hf_pdc_drmpdu_reason = -1;
+static gint hf_pdc_drmpdu_mode = -1;
+static gint hf_pdc_drmpdu_init = -1;
+static gint hf_pdc_dtmpdu_user_size =-1;
+static gint hf_pdc_admpdu_admpdunr = -1;
+static gint hf_pdc_admpdu_size = -1;
+
+/*Tree Declarations*/
+static gint ett_pdc = -1;
+static gint ett_pdc_simpdu_var = -1;
+
+
+/*Value String Declarations*/
+static const value_string valstr_simpdu_state[] = {
+	{ 1, "Operational" },
+	{ 2, "Standby" },
+	{ 3, "Master" },
+	{ 4, "Slave" },
+	{ 5, "Single" },
+	{ 0, NULL }
+};
+
+static const value_string valstr_simpdu_param[] = {
+	{ 2, "Version Number" },
+	{ 3, "References" },
+	{ 4, "Transport Selector" },
+	{ 0, NULL }
+};
+
+static const value_string valstr_mpdus[] = {
+	{ 1, "State Information" },
+	{ 2, "Request State" },
+	{ 3, "Disconnect Request" },
+	{ 4, "Data" },
+	{ 5, "Acknowledged Data" },
+	{ 6, "Expedited Data" },
+	{ 8, "Data Acknowledgement" },
+	{ 0, NULL }
+};
+
+static const value_string valstr_drmpdu_abort[] = {
+	{ 0, "Orderly Release" },
+	{ 1, "Abortive Release" },
+	{ 0, NULL }
+};
+
+static const value_string valstr_drmpdu_mode[] = {
+	{ 0, "Node Shutdown" },
+	{ 7, "PDC Release"},
+	{ 0, NULL }
+};
+
+static const value_string valstr_drmpdu_initatior[] = {
+	{ 0, "Server" },
+	{ 15, "Client"},
+	{ 0, NULL }
+};
+
+static const value_string valstr_drmpdu_reason[] = {
+	{ 0, "Reason Not Specified" },
+	{ 1, "Normal Disconnect Initiated by the MS-User" },
+	{ 2, "Protocol Error" },
+	{ 3, "Connection Request Refused" },
+	{ 4, "The Remote Operational MS Entity Does Not Respond" },
+	{ 5, "The Protocol Version Is Not Supported" },
+	{ 6, "Mismatched References" },
+	{ 0, NULL }
+};
+
+/* start of functions here */
+static int dissect_simpdu(tvbuff_t *tvb, proto_tree *tree, guint16 offset, guint8 lenIndicator)
+{
+	gint	    bytesProcessed;
+	guint8	    paramCode;
+	proto_item *simpduItem;
+	proto_tree *simpduVarTree;
+	proto_tree *simpduVarTree1;
+
+	bytesProcessed = 0;
+
+	/*Add the Credit allocation*/
+	proto_tree_add_item(tree, hf_pdc_credit, tvb, offset, 1, ENC_BIG_ENDIAN);
+	bytesProcessed += 1;
+
+	/*Add the State*/
+	proto_tree_add_item(tree, hf_pdc_simpdu_state, tvb, offset + bytesProcessed , 1, ENC_BIG_ENDIAN);
+	bytesProcessed += 1;
+
+	/*Add the YR-ADMU-NR*/
+	proto_tree_add_item(tree, hf_pdc_yr_admu_nr, tvb, offset + bytesProcessed , 4, ENC_BIG_ENDIAN);
+	bytesProcessed += 4;
+
+	/*Determine what's in the variable part*/
+	if (lenIndicator > 7)
+	{
+		/*Add the Variable Length Tree*/
+		simpduItem = proto_tree_add_item (tree, hf_pdc_simpdu_var, tvb, offset + bytesProcessed, lenIndicator - 7, ENC_NA);
+		simpduVarTree = proto_item_add_subtree (simpduItem, ett_pdc_simpdu_var);
+
+		while ((offset + bytesProcessed) < ( lenIndicator + 1 ))
+		{
+			/*Get the parameter code*/
+			paramCode  = tvb_get_guint8(tvb, offset + bytesProcessed);
+			simpduItem = proto_tree_add_item (simpduVarTree, hf_pdc_simpdu_param, tvb, offset + bytesProcessed,      1, ENC_BIG_ENDIAN);
+			simpduVarTree1 = proto_item_add_subtree (simpduItem, ett_pdc_simpdu_var);
+			bytesProcessed += 1;
+			switch (paramCode)
+			{
+			case PARAM_CODE_VERSION:
+				proto_tree_add_item(simpduVarTree1, hf_pdc_simpdu_var_len,     tvb, offset + bytesProcessed,     1, ENC_BIG_ENDIAN);
+				proto_tree_add_item(simpduVarTree1, hf_pdc_simpdu_var_version, tvb, offset + bytesProcessed + 1, 1, ENC_BIG_ENDIAN);
+				bytesProcessed += 2;
+				break;
+			case PARAM_CODE_REFERENCES:
+				proto_tree_add_item(simpduVarTree1, hf_pdc_simpdu_var_len,     tvb, offset + bytesProcessed,     1, ENC_BIG_ENDIAN);
+				proto_tree_add_item(simpduVarTree1, hf_pdc_simpdu_var_REFSRC,  tvb, offset + bytesProcessed + 1, 2, ENC_BIG_ENDIAN);
+				proto_tree_add_item(simpduVarTree1, hf_pdc_simpdu_var_REFDEST, tvb, offset + bytesProcessed + 3, 2, ENC_BIG_ENDIAN);
+				bytesProcessed += 5;
+				break;
+			case PARAM_CODE_TRANSPORT:
+				proto_tree_add_item(simpduVarTree1, hf_pdc_simpdu_var_len,     tvb, offset + bytesProcessed,     1, ENC_BIG_ENDIAN);
+				proto_tree_add_item(simpduVarTree1, hf_pdc_simpdu_var_TSEL,    tvb, offset + bytesProcessed + 1, 2, ENC_BIG_ENDIAN);
+				bytesProcessed += 3;
+				break;
+			}
+		} /* end of whileloop */
+	}
+	return (bytesProcessed);
+}
+
+static int dissect_rsmpdu(void)
+{
+	return (0);
+}
+
+static int dissect_drmpdu(tvbuff_t *tvb, proto_tree *tree, guint16 offset)
+{
+	/*DR-MPDU*/
+	proto_tree_add_item(tree, hf_pdc_drmpdu_abort,  tvb, offset,     1, ENC_BIG_ENDIAN);
+	proto_tree_add_item(tree, hf_pdc_drmpdu_mode,   tvb, offset,     1, ENC_BIG_ENDIAN);
+	proto_tree_add_item(tree, hf_pdc_drmpdu_init,   tvb, offset,     1, ENC_BIG_ENDIAN);
+	proto_tree_add_item(tree, hf_pdc_drmpdu_reason, tvb, offset + 1, 1, ENC_BIG_ENDIAN);
+
+	return (2);
+}
+
+#if (PDC_VERSION == 2)
+static int dissect_admpdu(tvbuff_t *tvb, proto_tree *parent_tree, proto_tree *tree, guint16 offset, packet_info *pinfo)
+{
+	guint16	  userDataLen;
+	guint16	  returnLen;
+	tvbuff_t *asterixTVB;
+
+	/*Add the ad*/
+	proto_tree_add_item(tree, hf_pdc_admpdu_admpdunr, tvb, offset, 4, ENC_BIG_ENDIAN);
+	offset += 4;
+
+	proto_tree_add_item(tree, hf_pdc_admpdu_size, tvb, offset, 2, ENC_BIG_ENDIAN);
+	/* length of user data field */
+	userDataLen = tvb_get_ntohs(tvb, offset);
+	offset += 2;
+
+	returnLen = userDataLen + 6;
+	asterixTVB = tvb_new_subset_length(tvb, offset, userDataLen);
+
+	if (asterix_handle != NULL)
+		call_dissector(asterix_handle, asterixTVB, pinfo, parent_tree);
+
+	return (returnLen);
+}
+#else
+static int dissect_admpdu(tvbuff_t *tvb, proto_tree *parent_tree _U_, proto_tree *tree, guint16 offset, packet_info *pinfo _U_)
+{
+	/*Add the ad*/
+	proto_tree_add_item(tree, hf_pdc_admpdu_admpdunr, tvb, offset, 4, ENC_BIG_ENDIAN);
+
+	return (2);
+}
+#endif
+
+#if (PDC_VERSION == 2)
+static int dissect_dtmpdu(tvbuff_t *tvb, proto_tree *parent_tree, proto_tree *tree, guint16 offset, packet_info *pinfo)
+{
+	guint16	  userDataLen;
+	guint16	  returnLen;
+	tvbuff_t *asterixTVB;
+
+	proto_tree_add_item(tree, hf_pdc_dtmpdu_user_size, tvb, offset, 2, ENC_BIG_ENDIAN);
+	/* length of user data field */
+	userDataLen = tvb_get_ntohs(tvb, 2);
+	returnLen  = userDataLen + 2;
+	asterixTVB = tvb_new_subset_length(tvb, offset + 2, userDataLen);
+
+	if (asterix_handle != NULL)
+		call_dissector(asterix_handle, asterixTVB, pinfo, parent_tree);
+
+	return (returnLen);
+}
+#else
+static int dissect_dtmpdu(tvbuff_t *tvb _U_, proto_tree *parent_tree _U_, proto_tree *tree _U_, guint16 offset _U_, packet_info *pinfo _U_)
+{
+	return (2);
+}
+#endif
+
+
+#if (PDC_VERSION == 2)
+static int dissect_edmpdu(tvbuff_t *tvb, proto_tree *parent_tree, proto_tree *tree, guint16 offset, packet_info *pinfo)
+{
+	guint16	  userDataLen;
+	guint16	  returnLen;
+	tvbuff_t *asterixTVB;
+
+	proto_tree_add_item(tree, hf_pdc_dtmpdu_user_size, tvb, offset, 2, ENC_BIG_ENDIAN);
+	/* length of user data field */
+	userDataLen = tvb_get_ntohs(tvb, 2);
+	returnLen   = userDataLen + 2;
+	asterixTVB  = tvb_new_subset_length(tvb, offset + 2, userDataLen);
+
+	if (asterix_handle != NULL)
+		call_dissector(asterix_handle, asterixTVB, pinfo, parent_tree);
+
+	return (returnLen);
+}
+#else
+static int dissect_edmpdu(tvbuff_t *tvb _U_, proto_tree *parent_tree _U_, proto_tree *tree _U_, guint16 offset _U_, packet_info *pinfo _U_)
+{
+	return 2;
+}
+#endif
+
+static int dissect_akmpdu(tvbuff_t *tvb, proto_tree *tree, guint16 offset)
+{
+	proto_tree_add_item(tree, hf_pdc_akmpdu_mns, tvb, offset,     2, ENC_BIG_ENDIAN);
+	proto_tree_add_item(tree, hf_pdc_akmpdu_cdt, tvb, offset,     2, ENC_BIG_ENDIAN);
+	proto_tree_add_item(tree, hf_pdc_yr_admu_nr, tvb, offset + 2, 4, ENC_BIG_ENDIAN);
+	return (6);
+}
+
+static int dissect_pdc_packet(tvbuff_t *tvb, proto_tree *tree, packet_info *pinfo)
+{
+	guint	    i = 0;
+	guint8	    len_indicator;
+	guint8	    mpduCode;
+	guint16	    length;
+	proto_item *pdcPacketItem;
+	proto_tree *pdcPacketTree;
+
+	length = 0;
+
+	/*Get the length indictor and the MPDU Code*/
+	len_indicator  = tvb_get_guint8 (tvb, i);
+	mpduCode       = tvb_get_guint8 (tvb, i + 1);
+	length	      += 2;
+
+	/*Add the PDC Tree*/
+	pdcPacketItem = proto_tree_add_item (tree, proto_pdc, tvb, i, len_indicator + 1, ENC_NA);
+	pdcPacketTree = proto_item_add_subtree (pdcPacketItem, ett_pdc);
+
+	/*Add the Length and packet type*/
+	proto_tree_add_item(pdcPacketTree, hf_pdc_len, tvb, i, 1, ENC_BIG_ENDIAN);
+	proto_tree_add_item(pdcPacketTree, hf_pdc_mpdu_code, tvb, i + 1, 1, ENC_BIG_ENDIAN);
+
+	/*Call the correct dissecting function*/
+	switch (mpduCode)
+	{
+	case SIMPDU:
+		length += dissect_simpdu(tvb, pdcPacketTree, length, len_indicator);
+		col_set_str(pinfo->cinfo, COL_INFO, "SIMPDU");
+		break;
+	case RSMPDU:
+		length += dissect_rsmpdu();
+		col_set_str(pinfo->cinfo, COL_INFO, "RSMPDU");
+		break;
+	case DRMPDU:
+		length += dissect_drmpdu(tvb, pdcPacketTree, length);
+		col_set_str(pinfo->cinfo, COL_INFO, "DRMPDU");
+		break;
+	case DTMPDU:
+		length += dissect_dtmpdu(tvb, tree, pdcPacketTree, length, pinfo);
+		col_set_str(pinfo->cinfo, COL_INFO, "DTMPDU");
+		break;
+	case ADMPDU:
+		length += dissect_admpdu(tvb, tree, pdcPacketTree, length, pinfo);
+		col_set_str(pinfo->cinfo, COL_INFO, "ADMPDU");
+		break;
+	case EDMPDU:
+		length += dissect_edmpdu(tvb, tree, pdcPacketTree, length, pinfo);
+		col_set_str(pinfo->cinfo, COL_INFO, "EDMPDU");
+		break;
+	case AKMPDU:
+		length += dissect_akmpdu(tvb, pdcPacketTree, length);
+		col_set_str(pinfo->cinfo, COL_INFO, "AKMPDU");
+		break;
+	default:
+		break;
+	};
+	return (length);  /* XXX: returned length ignored by caller: Remove keeping track of data processed ?         */
+			  /*      col_set_str() could then be done separately with 'if (tree)' around the dissection */
+}
+
+/* Actual dissector bits and bytes done here */
+static int dissect_pdc(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data _U_)
+{
+	/*Set the Column*/
+	col_set_str(pinfo->cinfo, COL_PROTOCOL, PDC_PROCOTOL );
+	col_clear(pinfo->cinfo, COL_INFO);
+
+	dissect_pdc_packet(tvb, tree, pinfo);
+
+	return tvb_reported_length(tvb);
+}
+
+/* function to provide TCP split packet combiner with size of packet */
+static guint get_pdc_message_len(packet_info *pinfo _U_, tvbuff_t *tvb,
+                                 int offset, void *data _U_)
+{
+	guint  size;
+	guint  extra;
+	guint8 mpdu_type;
+
+	mpdu_type = tvb_get_guint8(tvb, offset+1);
+	switch (mpdu_type)
+	{
+	case SIMPDU:
+		size  = tvb_get_guint8(tvb, offset);
+		extra = 1;
+		break;
+	case RSMPDU:
+		size  = tvb_get_guint8(tvb, offset);
+		extra = 1;
+		break;
+	case DRMPDU:
+		size  =	tvb_get_guint8(tvb, offset);
+		extra = 1;
+		break;
+	case DTMPDU:
+		size  = tvb_get_ntohs(tvb, offset+2);
+		extra = 4;
+		break;
+	case ADMPDU:
+		size  = tvb_get_ntohs(tvb, offset+6);
+		extra = 8;
+		break;
+	case EDMPDU:
+		size  = tvb_get_guint8(tvb, offset);
+		extra = 1;
+		break;
+	case AKMPDU:
+		size  = tvb_get_guint8(tvb, offset)+1;
+		extra = 0;
+		break;
+	default:
+		size  = 0;
+		extra = 0;
+	}
+	return size + extra;
+}
+
+/* top level call to recombine split tcp packets */
+
+static int tcp_dissect_pdc(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data _U_)
+{
+	guint8 mpdu_type;
+	guint8 minimum_bytes;
+
+	mpdu_type = tvb_get_guint8(tvb,1);
+	switch (mpdu_type)
+	{
+	case SIMPDU:
+		minimum_bytes = 2;
+		break;
+	case RSMPDU:
+		minimum_bytes = 2;
+		break;
+	case DRMPDU:
+		minimum_bytes = 2;
+		break;
+	case DTMPDU:
+		minimum_bytes = 4;
+		break;
+	case ADMPDU:
+		minimum_bytes = 8;
+		break;
+	case EDMPDU:
+		minimum_bytes = 2;
+		break;
+	case AKMPDU:
+		minimum_bytes = 2;
+		break;
+	default:
+		minimum_bytes = 2;
+		break;
+	}
+	tcp_dissect_pdus(tvb, pinfo, tree, TRUE, minimum_bytes, get_pdc_message_len, dissect_pdc, NULL);
+	return tvb_captured_length(tvb);
+}
+
+void proto_register_pdc(void)
+{
+	static hf_register_info hf[] =
+	{
+		{ &hf_pdc_len,
+		  { "Length Indicator", "pdc.li",
+		    FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL }},
+
+		{ &hf_pdc_mpdu_code,
+		  { "MPDU code", "pdc.mpducode",
+		    FT_UINT8, BASE_DEC, VALS(valstr_mpdus), 0x0, NULL, HFILL }},
+
+		{ &hf_pdc_credit,
+		  { "Credit", "pdc.cdt",
+		    FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL }},
+
+		{ &hf_pdc_yr_admu_nr,
+		  { "YR-ADMU-NR", "pdc.yradmunr",
+		    FT_UINT32, BASE_DEC, NULL, 0x0, NULL , HFILL }},
+
+		{ &hf_pdc_simpdu_state,
+		  { "State", "pdc.state",
+		    FT_UINT8, BASE_DEC, VALS(valstr_simpdu_state), 0x0, NULL, HFILL }},
+
+		{ &hf_pdc_akmpdu_mns,
+		  { "MNS", "pdc.akmpdu.mns",
+		    FT_UINT16, BASE_DEC, NULL, 0x8000, NULL, HFILL }},
+
+		{ &hf_pdc_akmpdu_cdt,
+		  { "CDT", "pdc.akmpdu.cdt",
+		    FT_UINT16, BASE_DEC, NULL, 0x07FF, NULL, HFILL }},
+
+		{ &hf_pdc_simpdu_var,
+		  { "Variable Part", "pdc.simpdu.variable",
+		    FT_NONE, BASE_NONE, NULL, 0x0, NULL, HFILL }},
+
+		{ &hf_pdc_simpdu_param,
+		  { "Parameter", "pdc.simpdu.param",
+		    FT_UINT8, BASE_DEC, VALS(valstr_simpdu_param), 0x0, NULL, HFILL }},
+
+		{ &hf_pdc_simpdu_var_len,
+		  { "Length", "pdc.simpdu.variable.length",
+		    FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL }},
+
+		{ &hf_pdc_simpdu_var_version,
+		  { "PDC Version Number", "pdc.simpdu.variable.version",
+		    FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL }},
+
+		{ &hf_pdc_simpdu_var_REFSRC,
+		  { "Reference Source", "pdc.simpdu.variable.refsrc",
+		    FT_UINT32, BASE_DEC, NULL, 0x0,NULL, HFILL }},
+
+		{ &hf_pdc_simpdu_var_REFDEST,
+		  { "Reference Destination", "pdc.simpdu.variable.refdst",
+		    FT_UINT32, BASE_DEC, NULL, 0x0,NULL, HFILL }},
+
+		{ &hf_pdc_simpdu_var_TSEL,
+		  { "Transport Selector", "pdc.simpdu.tsel",
+		    FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL }},
+
+		{ &hf_pdc_drmpdu_abort,
+		  { "Abort", "pdc.drmpdu.abort",
+		    FT_UINT8, BASE_DEC, VALS(valstr_drmpdu_abort), 0x80, NULL, HFILL }},
+
+		{ &hf_pdc_drmpdu_reason,
+		  { "Reason", "pdc.drmpdu.reason",
+		    FT_UINT8, BASE_DEC, VALS(valstr_drmpdu_reason), 0x0, NULL, HFILL }},
+
+		{ &hf_pdc_drmpdu_mode,
+		  { "Mode", "pdc.drmpdu.mode",
+		    FT_UINT8, BASE_DEC, VALS(valstr_drmpdu_mode), 0x70, NULL, HFILL }},
+
+		{ &hf_pdc_drmpdu_init,
+		  { "Reason", "pdc.drmpdu.init",
+		    FT_UINT8, BASE_DEC, VALS(valstr_drmpdu_initatior), 0x0F, NULL, HFILL }},
+
+		{ &hf_pdc_dtmpdu_user_size,
+		  { "User Data Length", "pdc.dtmpdu.usersize",
+		    FT_UINT16, BASE_DEC, NULL, 0x0, NULL , HFILL }},
+
+		{ &hf_pdc_admpdu_admpdunr,
+		  { "AD-MPDU-NR", "pdc.admpdu.admpdunr",
+		    FT_UINT32,  BASE_DEC, NULL, 0x0, NULL , HFILL }},
+
+		{ &hf_pdc_admpdu_size,
+		  { "User Data Size", "pdc.admpdu.usersize",
+		    FT_UINT16, BASE_DEC, NULL, 0x0, NULL , HFILL }},
+	};
+
+	/* Setup protocol subtree array */
+	static gint *ett[] = {
+		&ett_pdc,
+		&ett_pdc_simpdu_var
+	};
+
+	proto_pdc = proto_register_protocol (
+		"PDC Protocol",	/* name       */
+		"PDC",		/* short name */
+		"pdc"		/* abbrev     */
+		);
+
+	/*Required Function Calls to register the header fields and subtrees used*/
+	proto_register_field_array(proto_pdc, hf, array_length(hf));
+	proto_register_subtree_array(ett, array_length(ett));
+
+	/* Register our dissector handle */
+	pdc_tcp_handle = register_dissector("pdc", tcp_dissect_pdc, proto_pdc);
+}
+
+/* Function to add pdc dissector to tcp.port dissector table and to get handle for asterix dissector */
+void proto_reg_handoff_pdc(void)
+{
+	asterix_handle = find_dissector_add_dependency("asterix", proto_pdc);
+	dissector_add_for_decode_as_with_preference("tcp.port", pdc_tcp_handle);
+}
+
+/*
+ * Editor modelines  -  https://www.wireshark.org/tools/modelines.html
+ *
+ * Local variables:
+ * c-basic-offset: 8
+ * tab-width: 8
+ * indent-tabs-mode: t
+ * End:
+ *
+ * vi: set shiftwidth=8 tabstop=8 noexpandtab:
+ * :indentSize=8:tabSize=8:noTabs=false:
+ */