From Rob Kruciak:

This is a dissector for the BRP (Bandwidth Reservation Protocol). This protocol
is used by various telecommunications vendors to establish VoD (Video
On-Demand) sessions between a STB (Set Top Box) at the customer's home and the
VoD server at the video head-end. 

https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=6428
- Changed hf blurbs to NULL
- Used dissector_add_handle() as the proposed port is registered to a different protocol.

svn path=/trunk/; revision=39254

1 files changed, 417 insertions, 0 deletions

diff --git a/epan/dissectors/packet-brp.c b/epan/dissectors/packet-brp.c
new file mode 100644
index 0000000000..850d5d9e65
--- /dev/null
+++ b/epan/dissectors/packet-brp.c
@@ -0,0 +1,417 @@
+/* packet-brp.c
+* 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 <glib.h>
+#include <epan/packet.h>
+
+#define PROTO_TAG_BRP	"BRP"
+
+/* Wireshark ID of the BRP protocol */
+static int proto_brp = -1;
+
+/* These are the handles of our subdissectors */
+static dissector_handle_t data_handle=NULL;
+
+static dissector_handle_t brp_handle;
+void dissect_brp(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree);
+
+/*static int global_brp_port = 1958; *//* The port is registered for another protocol */
+
+static const value_string brp_packettype_names[] = {
+	{ 0, "BRP" },
+	{ 1, "Setup Request - BRC -> BRS" },
+    { 2, "Setup Response - BRS -> BRC" },
+    { 3, "Teardown Request - BRC -> BRS" },
+    { 4, "Teardown Response - BRS -> BRC" },
+    { 5, "Heartbeat Request - BRS -> BRC" },
+    { 6, "Heartbeat Response - BRC -> BRS" },
+    { 7, "Unidirectional Flow Create Request - BRC -> BRS" },
+    { 8, "Flow Create Response - BRS -> BRC" },
+    { 9, "Flow Delete Request BRC -> BRS" },
+    { 10, "Flow Delete Response - BRS -> BRC" },
+    { 11, "Flow Get Request - BRC -> BRS" },
+    { 12, "Flow Get Response - BRS -> BRC" },
+    { 13, "Flow Get Next Request - BRC -> BRS" },
+    { 14, "Flow Get Next Response - BRS -> BRC" },
+    { 15, "Flow Abort - BRS -> BRC" },
+	{ 0, NULL }
+};
+
+static const value_string brp_stat_vals[] = {
+	{ 0, "OK" },
+	{ 1, "Comm Error - Network connectivity has been lost (Client Message)." },
+    { 2, "No Bandwidth - There is insufficient bandwidth available in the network to honor the request (Server Message)." },
+    { 3, "Insufficient Resource - Either there is insufficient memory or resource available to transmit the request or, insufficient resources existed at the server to complete the request. Note that insufficient bandwidth in the network is handled by the previous status value. This is the catchall for all other resource deficiencies (Client/Server Message)." },
+    { 4, "No Such - The requested flow does not exist (Server Message)." },
+    { 5, "No Session - There is no active session. The server may return this in the event that the client and server are out of sync. In that eventuality, the client must reestablish its session and recreate any flows that it believes have been lost (Server Message)." },
+    { 6, "Invalid Argument - One of the input arguments to the call was not valid (Client/Server Message)." },
+    { 7, "Unreachable - The specified BRS is not reachable (Client Message)." },
+    { 8, "Internal Error - An internal fault has occurred. This is generally indicative of a fatal condition within the client system (Server Message)." },
+    { 9, "Already Exists - The flow or session that the client requested already exists (Server Message)." },
+    { 10, "Flow Removed - The flow was removed or lost due to issues internal to the network (Server Message)." },
+    { 11, "Invalid Sender - Received packet was from an unknown sender (Server Message)." },
+    { 12, "Invalid Message - Input message is not defined or malformed (Client/Server Message)." },
+    { 13, "Unsupported Version - The requested version (in a setup) is not supported (Server Message)." },
+    { 14, "Pending - The requested operation is proceeding and a status will be returned with the final result shortly (Server Message)." },
+	{ 0, NULL }
+};
+
+/* The following hf_* variables are used to hold the Wireshark IDs of
+* our data fields; they are filled out when we call
+* proto_register_field_array() in proto_register_brp()
+*/
+static gint hf_brp = -1;
+static gint hf_brp_type = -1;
+static gint hf_brp_trans = -1;
+static gint hf_brp_ver = -1;
+static gint hf_brp_stat = -1;
+static gint hf_brp_srcip = -1;
+static gint hf_brp_dstip = -1;
+static gint hf_brp_dstuport = -1;
+static gint hf_brp_mbz = -1;
+static gint hf_brp_bw = -1;
+static gint hf_brp_life = -1;
+static gint hf_brp_flid = -1;
+static gint hf_brp_rmttl = -1;
+static gint hf_brp_fltype = -1;
+
+/* These are the ids of the subtrees that we may be creating */
+static gint ett_brp = -1;
+static gint ett_brp_type = -1;
+static gint ett_brp_trans = -1;
+static gint ett_brp_ver = -1;
+static gint ett_brp_stat = -1;
+static gint ett_brp_srcip = -1;
+static gint ett_brp_dstip = -1;
+static gint ett_brp_dstuport = -1;
+static gint ett_brp_mbz = -1;
+static gint ett_brp_bw = -1;
+static gint ett_brp_life = -1;
+static gint ett_brp_flid = -1;
+static gint ett_brp_rmttl = -1;
+static gint ett_brp_fltype = -1;
+
+void
+dissect_brp(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
+{
+
+	proto_item *brp_item = NULL;
+	proto_tree *brp_tree = NULL;
+    gint offset = 0;
+    guint8 type = 0;
+    guint8 packet_type = tvb_get_guint8(tvb, 0);
+    
+    /* If there is a "tree" requested, we handle that request. */
+
+	if (check_col(pinfo->cinfo, COL_PROTOCOL))
+		col_set_str(pinfo->cinfo, COL_PROTOCOL, PROTO_TAG_BRP);
+	/* Clear out stuff in the info column */
+	if(check_col(pinfo->cinfo,COL_INFO)){
+		col_clear(pinfo->cinfo,COL_INFO);
+        /* We add some snazzy bizness to the info field to quickly ascertain 
+		what type of message was sent to/from the BRS/BRC. */
+        col_add_fstr(pinfo->cinfo, COL_INFO, "Message Type - %s",
+		     val_to_str(packet_type, brp_packettype_names, "Unknown (0x%02x)"));
+	}
+
+    /* This call adds our tree to the main dissection tree. */
+
+	if (tree) { /* we are being asked for details */
+
+        /* Here we add our tree/subtree so we can have a collapsible branch. */
+        brp_item = proto_tree_add_item( tree, proto_brp, tvb, 0, -1, ENC_BIG_ENDIAN );
+		brp_tree = proto_item_add_subtree( brp_item, ett_brp);
+
+        /* We use tvb_get_guint8 to get our type value out. */
+        type = tvb_get_guint8(tvb, offset);
+		offset += 0;
+        
+        /* Now let's break down each packet and display it in the collapsible branch */ 
+        switch(type) 
+            {
+        case 1: /* Setup Request */
+            proto_tree_add_item( brp_tree, hf_brp_type, tvb, offset, 1, ENC_BIG_ENDIAN ); 
+			offset += 1;
+            proto_tree_add_item( brp_tree, hf_brp_trans, tvb, offset, 3, ENC_BIG_ENDIAN ); 
+			offset += 3;
+            proto_tree_add_item( brp_tree, hf_brp_ver, tvb, offset, 4, ENC_BIG_ENDIAN ); 
+			offset +=4; 
+            break;
+
+        case 2: /* Setup Response */
+            proto_tree_add_item( brp_tree, hf_brp_type, tvb, offset, 1, ENC_BIG_ENDIAN ); 
+			offset += 1;
+            proto_tree_add_item( brp_tree, hf_brp_trans, tvb, offset, 3, ENC_BIG_ENDIAN ); 
+			offset += 3;
+            proto_tree_add_uint( brp_tree, hf_brp_stat, tvb, offset, 4, ENC_BIG_ENDIAN ); 
+			offset +=4; 
+            break;
+
+        case 3: /* Teardown Request */
+            proto_tree_add_item( brp_tree, hf_brp_type, tvb, offset, 1, ENC_BIG_ENDIAN ); 
+			offset += 1;
+            proto_tree_add_item( brp_tree, hf_brp_trans, tvb, offset, 3, ENC_BIG_ENDIAN ); 
+			offset += 3;
+            break;
+
+        case 4: /* Teardown Response */
+            proto_tree_add_item( brp_tree, hf_brp_type, tvb, offset, 1, ENC_BIG_ENDIAN ); 
+			offset += 1;
+            proto_tree_add_item( brp_tree, hf_brp_trans, tvb, offset, 3, ENC_BIG_ENDIAN ); 
+			offset += 3;
+            break;
+
+        case 5: /* Heartbeat Request */
+            proto_tree_add_item( brp_tree, hf_brp_type, tvb, offset, 1, ENC_BIG_ENDIAN ); 
+			offset += 1;
+            proto_tree_add_item( brp_tree, hf_brp_trans, tvb, offset, 3, ENC_BIG_ENDIAN ); 
+			offset += 3;
+            break;
+
+        case 6: /* Heartbeat Response */
+            proto_tree_add_item( brp_tree, hf_brp_type, tvb, offset, 1, ENC_BIG_ENDIAN ); 
+			offset += 1;
+            proto_tree_add_item( brp_tree, hf_brp_trans, tvb, offset, 3, ENC_BIG_ENDIAN ); 
+			offset += 3;
+            break;
+
+        case 7: /* Uni Flow Create Request */
+            proto_tree_add_item( brp_tree, hf_brp_type, tvb, offset, 1, ENC_BIG_ENDIAN ); 
+			offset += 1;
+            proto_tree_add_item( brp_tree, hf_brp_trans, tvb, offset, 3, ENC_BIG_ENDIAN ); 
+			offset += 3;
+            proto_tree_add_item( brp_tree, hf_brp_srcip, tvb, offset, 4, ENC_BIG_ENDIAN ); 
+			offset +=4;
+            proto_tree_add_item( brp_tree, hf_brp_dstip, tvb, offset, 4, ENC_BIG_ENDIAN ); 
+			offset +=4;
+            proto_tree_add_item( brp_tree, hf_brp_dstuport, tvb, offset, 2, ENC_BIG_ENDIAN ); 
+			offset +=2;
+            proto_tree_add_item( brp_tree, hf_brp_mbz, tvb, offset, 2, ENC_BIG_ENDIAN ); 
+			offset +=2;
+            proto_tree_add_item( brp_tree, hf_brp_bw, tvb, offset, 4, ENC_BIG_ENDIAN ); 
+			offset +=4;
+            proto_tree_add_item( brp_tree, hf_brp_life, tvb, offset, 4, ENC_BIG_ENDIAN ); 
+			offset +=4;
+            break;
+
+        case 8: /* Flow Create Response */
+            proto_tree_add_item( brp_tree, hf_brp_type, tvb, offset, 1, ENC_BIG_ENDIAN ); 
+			offset += 1;
+            proto_tree_add_item( brp_tree, hf_brp_trans, tvb, offset, 3, ENC_BIG_ENDIAN ); 
+			offset += 3;
+            proto_tree_add_item( brp_tree, hf_brp_stat, tvb, offset, 4, ENC_BIG_ENDIAN ); 
+			offset +=4;
+            proto_tree_add_item( brp_tree, hf_brp_flid, tvb, offset, 4, ENC_BIG_ENDIAN ); 
+			offset +=4;
+            break;
+
+        case 9: /* Flow Delete Request */
+            proto_tree_add_item( brp_tree, hf_brp_type, tvb, offset, 1, ENC_BIG_ENDIAN ); 
+			offset += 1;
+            proto_tree_add_item( brp_tree, hf_brp_trans, tvb, offset, 3, ENC_BIG_ENDIAN ); 
+			offset += 3;
+            proto_tree_add_item( brp_tree, hf_brp_flid, tvb, offset, 4, ENC_BIG_ENDIAN ); 
+			offset +=4; 
+            break;
+
+        case 10: /* Flow Delete Response */
+            proto_tree_add_item( brp_tree, hf_brp_type, tvb, offset, 1, ENC_BIG_ENDIAN ); 
+			offset += 1;
+            proto_tree_add_item( brp_tree, hf_brp_trans, tvb, offset, 3, ENC_BIG_ENDIAN ); 
+			offset += 3;
+            proto_tree_add_item( brp_tree, hf_brp_stat, tvb, offset, 4, ENC_BIG_ENDIAN ); 
+			offset +=4; 
+            break;
+
+        case 11: /* Flow Get Request */
+            proto_tree_add_item( brp_tree, hf_brp_type, tvb, offset, 1, ENC_BIG_ENDIAN ); 
+			offset += 1;
+            proto_tree_add_item( brp_tree, hf_brp_trans, tvb, offset, 3, ENC_BIG_ENDIAN ); 
+			offset += 3;
+            proto_tree_add_item( brp_tree, hf_brp_flid, tvb, offset, 4, ENC_BIG_ENDIAN ); 
+			offset +=4; 
+            break;
+
+        case 12: /* Flow Get Response */
+            proto_tree_add_item( brp_tree, hf_brp_type, tvb, offset, 1, ENC_BIG_ENDIAN ); 
+			offset += 1;
+            proto_tree_add_item( brp_tree, hf_brp_trans, tvb, offset, 3, ENC_BIG_ENDIAN ); 
+			offset += 3;
+            proto_tree_add_item( brp_tree, hf_brp_stat, tvb, offset, 4, ENC_BIG_ENDIAN ); 
+			offset +=4;
+            proto_tree_add_item( brp_tree, hf_brp_rmttl, tvb, offset, 4, ENC_BIG_ENDIAN ); 
+			offset +=4;
+            proto_tree_add_item( brp_tree, hf_brp_srcip, tvb, offset, 4, ENC_BIG_ENDIAN ); 
+			offset +=4;
+            proto_tree_add_item( brp_tree, hf_brp_dstip, tvb, offset, 4, ENC_BIG_ENDIAN ); 
+			offset +=4;
+            proto_tree_add_item( brp_tree, hf_brp_dstuport, tvb, offset, 2, ENC_BIG_ENDIAN ); 
+			offset +=2;
+            proto_tree_add_item( brp_tree, hf_brp_mbz, tvb, offset, 2, ENC_BIG_ENDIAN ); 
+			offset +=2;
+            proto_tree_add_item( brp_tree, hf_brp_fltype, tvb, offset, 1, ENC_BIG_ENDIAN ); 
+			offset +=1;
+            proto_tree_add_item( brp_tree, hf_brp_bw, tvb, offset, 3, ENC_BIG_ENDIAN ); 
+			offset +=3;
+            proto_tree_add_item( brp_tree, hf_brp_life, tvb, offset, 4, ENC_BIG_ENDIAN ); 
+			offset +=4;
+            proto_tree_add_item( brp_tree, hf_brp_flid, tvb, offset, 4, ENC_BIG_ENDIAN ); 
+			offset +=4;
+            break;
+
+        case 13: /* Flow Get Next Request */
+            proto_tree_add_item( brp_tree, hf_brp_type, tvb, offset, 1, ENC_BIG_ENDIAN ); 
+			offset += 1;
+            proto_tree_add_item( brp_tree, hf_brp_trans, tvb, offset, 3, ENC_BIG_ENDIAN ); 
+			offset += 3;
+            proto_tree_add_item( brp_tree, hf_brp_flid, tvb, offset, 4, ENC_BIG_ENDIAN ); 
+			offset +=4; 
+            break;
+
+        case 14: /* Flow Get Next Response */
+            proto_tree_add_item( brp_tree, hf_brp_type, tvb, offset, 1, ENC_BIG_ENDIAN ); 
+			offset += 1;
+            proto_tree_add_item( brp_tree, hf_brp_trans, tvb, offset, 3, ENC_BIG_ENDIAN ); 
+			offset += 3;
+            proto_tree_add_item( brp_tree, hf_brp_stat, tvb, offset, 4, ENC_BIG_ENDIAN ); 
+			offset +=4;
+            proto_tree_add_item( brp_tree, hf_brp_rmttl, tvb, offset, 4, ENC_BIG_ENDIAN ); 
+			offset +=4;
+            proto_tree_add_item( brp_tree, hf_brp_srcip, tvb, offset, 4, ENC_BIG_ENDIAN ); 
+			offset +=4;
+            proto_tree_add_item( brp_tree, hf_brp_dstip, tvb, offset, 4, ENC_BIG_ENDIAN ); 
+			offset +=4;
+            proto_tree_add_item( brp_tree, hf_brp_dstuport, tvb, offset, 2, ENC_BIG_ENDIAN ); 
+			offset +=2;
+            proto_tree_add_item( brp_tree, hf_brp_mbz, tvb, offset, 2, ENC_BIG_ENDIAN ); 
+			offset +=2;
+            proto_tree_add_item( brp_tree, hf_brp_fltype, tvb, offset, 1, ENC_BIG_ENDIAN ); 
+			offset +=1;
+            proto_tree_add_item( brp_tree, hf_brp_bw, tvb, offset, 3, ENC_BIG_ENDIAN ); 
+			offset +=3;
+            proto_tree_add_item( brp_tree, hf_brp_life, tvb, offset, 4, ENC_BIG_ENDIAN ); 
+			offset +=4;
+            proto_tree_add_item( brp_tree, hf_brp_flid, tvb, offset, 4, ENC_BIG_ENDIAN ); 
+			offset +=4; 
+            break;
+
+        case 15: /* Flow Abort */
+            proto_tree_add_item( brp_tree, hf_brp_type, tvb, offset, 1, ENC_BIG_ENDIAN ); 
+			offset += 1;
+            proto_tree_add_item( brp_tree, hf_brp_mbz, tvb, offset, 3, ENC_BIG_ENDIAN ); 
+			offset +=3;
+            proto_tree_add_item( brp_tree, hf_brp_flid, tvb, offset, 4, ENC_BIG_ENDIAN ); 
+			offset +=4; 
+            break;
+
+        default:
+            /* Should not get here */
+            DISSECTOR_ASSERT_NOT_REACHED();
+            break;
+            }
+
+	}
+}
+
+/*--- proto_reg_handoff_brp -------------------------------------------*/	
+void proto_reg_handoff_brp(void)
+{
+	static gboolean initialized=FALSE;
+
+	if (!initialized) {
+		brp_handle = create_dissector_handle(dissect_brp, proto_brp);
+		/*dissector_add("udp.port", global_brp_port, brp_handle);*/
+		dissector_add_handle("udp.port", brp_handle);  /* For 'Decoode as' */
+	}
+
+}
+
+/*--- proto_register_brp ----------------------------------------------*/
+void proto_register_brp (void)
+{
+	/* A data field is something you can search/filter on.
+	* 
+	* We create a structure to register our fields. It consists of an
+	* array of hf_register_info structures, each of which are of the format
+	* {&(field id), {name, abbrev, type, display, strings, bitmask, blurb, HFILL}}.
+	*/
+	static hf_register_info hf[] = {
+        { &hf_brp_type,
+		{ "Type", "brp.type", FT_UINT8, BASE_DEC, VALS(brp_packettype_names), 0x0,
+		NULL, HFILL }},
+        { &hf_brp_trans,
+		{ "Transaction ID", "brp.trans", FT_UINT8, BASE_DEC, NULL, 0x0,
+		NULL, HFILL }},
+        { &hf_brp_ver,
+		{ "Version", "brp.ver", FT_UINT8, BASE_DEC, NULL, 0x0,
+		NULL, HFILL }},
+        { &hf_brp_stat,
+		{ "Status", "brp.stat", FT_UINT8, BASE_DEC, VALS(brp_stat_vals), 0x0,
+		NULL, HFILL }},
+        { &hf_brp_srcip,
+		{ "Source IP Address", "brp.srcip", FT_IPv4, BASE_NONE, NULL, 0x0,
+		NULL, HFILL }},
+        { &hf_brp_dstip,
+		{ "Destination IP Address", "brp.dstip", FT_IPv4, BASE_NONE, NULL, 0x0,
+		NULL, HFILL }},
+        { &hf_brp_dstuport,
+		{ "Destination UDP Port", "brp.dstuport", FT_UINT16, BASE_DEC, NULL, 0x0,
+		NULL, HFILL }},
+        { &hf_brp_mbz,
+		{ "MBZ", "brp.mbz", FT_UINT8, BASE_DEC, NULL, 0x0,
+		NULL, HFILL }},
+        { &hf_brp_bw,
+		{ "Bandwidth - Kbytes/sec", "brp.bw", FT_UINT32, BASE_DEC, NULL, 0x0,
+		NULL, HFILL }},
+        { &hf_brp_life,
+		{ "Lifetime", "brp.life", FT_UINT32, BASE_DEC, NULL, 0x0,
+		NULL, HFILL }},
+        { &hf_brp_flid,
+		{ "Flow Identifier", "brp.flid", FT_UINT16, BASE_DEC, NULL, 0x0,
+		NULL, HFILL }},
+        { &hf_brp_fltype,
+		{ "Flow Type", "brp.fltype", FT_UINT8, BASE_DEC, NULL, 0x0,
+		NULL, HFILL }},
+        { &hf_brp_rmttl,
+		{ "Remaining TTL", "brp.rmttl", FT_UINT32, BASE_DEC, NULL, 0x0,
+		NULL, HFILL }},
+	};
+		static gint *ett[] = {
+		&ett_brp,
+		&ett_brp_type,
+        &ett_brp_trans,
+        &ett_brp_ver,
+        &ett_brp_stat,
+        &ett_brp_srcip, 
+        &ett_brp_dstip, 
+        &ett_brp_dstuport,
+        &ett_brp_mbz,
+        &ett_brp_bw,
+        &ett_brp_life,
+        &ett_brp_flid,
+        &ett_brp_fltype,
+        &ett_brp_rmttl
+
+	};
+	proto_brp = proto_register_protocol ("BRP Protocol", "BRP", "brp");
+	proto_register_field_array (proto_brp, hf, array_length (hf));
+	proto_register_subtree_array (ett, array_length (ett));
+	register_dissector("brp", dissect_brp, proto_brp);
+}