Incorporate plugin dissector into build in collection.

svn path=/trunk/; revision=27504

1 files changed, 373 insertions, 0 deletions

diff --git a/epan/dissectors/packet-cisco-sm.c b/epan/dissectors/packet-cisco-sm.c
new file mode 100644
index 0000000000..53dd994f46
--- /dev/null
+++ b/epan/dissectors/packet-cisco-sm.c
@@ -0,0 +1,373 @@
+/* packet-sm.c
+ * Routines for Cisco Session Management Protocol dissection
+ * Copyright 2004, Duncan Sargeant <dunc-ethereal@rcpt.to>
+ *
+ * $Id$
+ *
+ * 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.
+ */
+
+/*
+ * This is basically a glue dissector for the Cisco SM protocol.  It sits
+ * between the RUDP and MTP3 layers in conversations on port 7000 between
+ * SLTs and MGCs.  A link to an overview of the technology :
+ * 
+ * http://www.cisco.com/en/US/products/sw/netmgtsw/ps4883/products_installation_and_configuration_guide_chapter09186a008010950a.html
+ *
+ * Link showing debugs of the protocol:
+ * http://www.cisco.com/univercd/cc/td/doc/product/access/sc/rel7/omts/omts_apb.htm#30052
+ *
+ * I'm unable to get local debugs of this protocol, as the SLT's are
+ * slow cpu cisco 2600's, and they tend to drop the signalling links
+ * if you turn any debugging on!  But there's not much interesting
+ * here, its just glue to get the ISUP/MTP3 data nicely.
+ */
+
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include <epan/packet.h>
+
+#define MESSAGE_TYPE_START				0
+#define MESSAGE_TYPE_STOP				1
+#define MESSAGE_TYPE_ACTIVE				2
+#define MESSAGE_TYPE_STANDBY			3
+#define MESSAGE_TYPE_Q_HOLD_INVOKE		4
+#define MESSAGE_TYPE_Q_HOLD_RESPONSE	5
+#define MESSAGE_TYPE_Q_RESUME_INVOKE	6
+#define MESSAGE_TYPE_Q_RESUME_RESPONSE	7
+#define MESSAGE_TYPE_Q_RESET_INVOKE		8
+#define MESSAGE_TYPE_Q_RESET_RESPONSE	9
+#define MESSAGE_TYPE_PDU				0x8000
+
+const value_string sm_message_type_value[] = {
+ 	{ MESSAGE_TYPE_START,				"Start Message" },
+	{ MESSAGE_TYPE_STOP,				"Stop Message" },
+	{ MESSAGE_TYPE_ACTIVE,				"Active Message" },
+	{ MESSAGE_TYPE_STANDBY,				"Standby Message" },
+	{ MESSAGE_TYPE_Q_HOLD_INVOKE,  		"Q_HOLD Invoke Message" }, 
+	{ MESSAGE_TYPE_Q_HOLD_RESPONSE,  	"Q_HOLD Response Message" }, 
+	{ MESSAGE_TYPE_Q_RESUME_INVOKE,  	"Q_RESUME Invoke Message" }, 
+	{ MESSAGE_TYPE_Q_RESUME_RESPONSE,	"Q_RESUME Response Message" },
+	{ MESSAGE_TYPE_Q_RESET_INVOKE,    	"Q_RESET Invoke Message" },
+	{ MESSAGE_TYPE_Q_RESET_RESPONSE,  	"Q_RESET Response Message" },
+	{ MESSAGE_TYPE_PDU,                	"PDU Message" },
+  	{ 0,                                  	NULL }
+};
+
+const value_string sm_message_type_value_info[] = {
+        { MESSAGE_TYPE_START,                   "Start" },
+        { MESSAGE_TYPE_STOP,                    "Stop" },
+        { MESSAGE_TYPE_ACTIVE,                  "Active" },
+        { MESSAGE_TYPE_STANDBY,                 "Standby" },
+        { MESSAGE_TYPE_Q_HOLD_INVOKE,           "Q_HOLD Invoke" },
+        { MESSAGE_TYPE_Q_HOLD_RESPONSE,         "Q_HOLD Response" },
+        { MESSAGE_TYPE_Q_RESUME_INVOKE,         "Q_RESUME Invoke" },
+        { MESSAGE_TYPE_Q_RESUME_RESPONSE,       "Q_RESUME Response" },
+        { MESSAGE_TYPE_Q_RESET_INVOKE,          "Q_RESET Invoke" },
+        { MESSAGE_TYPE_Q_RESET_RESPONSE,        "Q_RESET Response" },
+        { MESSAGE_TYPE_PDU,                     "PDU" },
+        { 0,                                    NULL }
+};
+
+
+#define PDU_MTP3_TO_SLT			0x10
+#define PDU_MTP3_FROM_SLT		0x11
+
+#define PDU_SET_STATE			0x44	
+#define PDU_RETURN_STATE		0x45	
+
+const value_string sm_pdu_type_value[] = {
+	{ PDU_MTP3_TO_SLT,			"mtp3 to SLT"},
+	{ PDU_MTP3_FROM_SLT, 		"mtp3 from SLT"},
+	{ PDU_SET_STATE, 			"set session state"},
+	{ PDU_RETURN_STATE,			"return session state"},
+        { 0,                    NULL }
+};
+
+/* TODO: Change to useful name once known */
+#define SM_PROTOCOL_X100 0x0100
+#define SM_PROTOCOL_X101 0x0101
+#define SM_PROTOCOL_X114 0x0114
+#define SM_PROTOCOL_X122 0x0122
+
+
+/* Initialize the protocol and registered fields */
+static int proto_sm = -1;
+
+static int hf_sm_sm_msg_type = -1;
+static int hf_sm_protocol = -1;
+static int hf_sm_msg_id = -1;
+static int hf_sm_msg_type = -1;
+static int hf_sm_channel = -1;
+static int hf_sm_bearer = -1;
+static int hf_sm_len = -1;
+static int hf_sm_ip_addr = -1;
+static int hf_sm_context = -1;
+static int hf_sm_eisup_msg_id = -1;
+static int hf_sm_tag = -1;
+
+/* Initialize the subtree pointers */
+static gint ett_sm = -1;
+
+static dissector_handle_t sdp_handle;
+static dissector_handle_t mtp3_handle;
+static dissector_handle_t data_handle;
+
+/* Code to actually dissect the packets */
+static void
+dissect_sm(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
+{
+	proto_item *ti;
+	proto_tree *sm_tree;
+	tvbuff_t *next_tvb = NULL;
+	guint32 sm_message_type;
+	guint16 protocol;
+	guint16 msg_type = 0;
+	guint16 length;
+	guint16 tag;
+	int     offset = 0;
+
+	sm_message_type = tvb_get_ntohl(tvb,offset);
+
+	if (check_col(pinfo->cinfo, COL_PROTOCOL)) 
+		col_set_str(pinfo->cinfo, COL_PROTOCOL, "SM");
+
+	if (check_col(pinfo->cinfo, COL_INFO)) 
+		col_add_fstr(pinfo->cinfo, COL_INFO, "Cisco SM Packet (%s)",
+			val_to_str(sm_message_type, sm_message_type_value_info,"reserved"));
+
+	ti = proto_tree_add_item(tree, proto_sm, tvb, offset, 0, FALSE);
+	sm_tree = proto_item_add_subtree(ti, ett_sm);
+
+	proto_tree_add_uint_format(sm_tree, hf_sm_sm_msg_type, tvb, offset, 4, sm_message_type,
+		"SM Message type: %s (0x%0x)", val_to_str(sm_message_type, sm_message_type_value, "reserved"), sm_message_type);
+
+	offset = offset + 4;
+	if (sm_message_type ==  MESSAGE_TYPE_PDU) {
+		proto_tree_add_item(sm_tree, hf_sm_protocol, tvb, offset, 2, FALSE);
+		protocol = tvb_get_ntohs(tvb,offset);
+		offset = offset + 2;
+		switch(protocol){
+		case SM_PROTOCOL_X100:
+		case SM_PROTOCOL_X122:
+			if (!tree)
+				return;
+			/* Protocol 0x100/0x122 only contains a length and then an EISUP packet */
+			proto_tree_add_item(sm_tree, hf_sm_len, tvb, offset, 2, FALSE);
+			length = tvb_get_ntohs(tvb,offset);
+			offset = offset + 2;
+			proto_item_set_len(ti, 8);
+
+			/* This should be the EISUP dissector but we havent got one
+			 * right now - so decode it as data for now ... */
+			next_tvb = tvb_new_subset(tvb, offset, length, length);
+			call_dissector(data_handle, next_tvb, pinfo, sm_tree);
+
+			break;
+		case SM_PROTOCOL_X101:
+			if (!tree)
+				return;
+			/* XXX Reveres enginered so this may not be correct!!! 
+			 * EISUP - used between Cisco HSI and Cisco PGW devices, 
+			 * uses RUDP with default port number 8003. 
+			 * Protocol stack is RUDP->Cisco SM->SDP. 
+			 * This implementation is PROPRIETARY 
+			 */
+			proto_tree_add_item(sm_tree, hf_sm_len, tvb, offset, 2, FALSE);
+			length = tvb_get_ntohs(tvb,offset);
+			offset = offset + 2;
+			proto_item_set_len(ti, length + offset);
+			/* The next stuff seems to be IP addr */
+			proto_tree_add_item(sm_tree, hf_sm_ip_addr, tvb, offset, 4, FALSE);
+			offset = offset + 4;
+			/* This part looks to be the same per session */
+			proto_tree_add_item(sm_tree, hf_sm_context, tvb, offset, 4, FALSE);
+			offset = offset +4;
+			/* Some sort of message type? */
+			proto_tree_add_item(sm_tree, hf_sm_eisup_msg_id, tvb, offset, 1, FALSE);
+			offset = offset + 1;
+			/* XXX Problem are tags 1 or two bytes???*/
+			proto_tree_add_item(sm_tree, hf_sm_tag, tvb, offset, 2, FALSE);
+
+			tag = tvb_get_ntohs(tvb,offset);
+			offset = offset +2;
+			if (tag== 0x01ac) {
+				proto_tree_add_item(sm_tree, hf_sm_len, tvb, offset, 2, FALSE);
+				length = tvb_get_ntohs(tvb,offset);
+				offset = offset +2;
+				next_tvb = tvb_new_subset(tvb, offset, length, length);
+				call_dissector(sdp_handle, next_tvb, pinfo, sm_tree);
+				offset = offset+length;
+
+			}
+			/*return;*/
+			break;
+		case SM_PROTOCOL_X114:
+			if (!tree)
+				return;
+			/* XXX Reveres enginered so this may not be correct!!! */
+			proto_tree_add_item(sm_tree, hf_sm_len, tvb, offset, 2, FALSE);
+			length = tvb_get_ntohs(tvb,offset);
+			offset = offset + 2;
+			proto_item_set_len(ti, length + offset);
+			/* The next stuff seems to be IP addr */
+			proto_tree_add_item(sm_tree, hf_sm_ip_addr, tvb, offset, 4, FALSE);
+			offset = offset + 4;
+			proto_tree_add_item(sm_tree, hf_sm_context, tvb, offset, 4, FALSE);
+			offset = offset +4;
+			/* Some sort of message type? */
+			proto_tree_add_item(sm_tree, hf_sm_eisup_msg_id, tvb, offset, 1, FALSE);
+			offset = offset + 1;
+			/* XXX Problem are tags 1 or two bytes???*/
+			proto_tree_add_item(sm_tree, hf_sm_tag, tvb, offset, 2, FALSE);
+
+			tag = tvb_get_ntohs(tvb,offset);
+			offset = offset +2;
+			if (tag== 0x01ac) {
+				proto_tree_add_item(sm_tree, hf_sm_len, tvb, offset, 2, FALSE);
+				length = tvb_get_ntohs(tvb,offset);
+				offset = offset +2;
+				next_tvb = tvb_new_subset(tvb, offset, length, length);
+				call_dissector(sdp_handle, next_tvb, pinfo, sm_tree);
+				offset = offset+length;
+
+			}
+			break;
+		default:
+			proto_tree_add_item(sm_tree, hf_sm_msg_id, tvb, offset, 2, FALSE);
+			offset = offset +2;
+			msg_type = tvb_get_ntohs(tvb,offset);
+			proto_tree_add_uint_format(sm_tree, hf_sm_msg_type, tvb, offset, 2, msg_type,
+				"Message type: %s (0x%0x)", val_to_str(msg_type, sm_pdu_type_value, "reserved"),
+				msg_type);
+			msg_type = tvb_get_ntohs(tvb,offset);
+			offset = offset + 2;
+			proto_tree_add_item(sm_tree, hf_sm_channel, tvb, offset, 2, FALSE);
+			offset = offset + 2;
+			proto_tree_add_item(sm_tree, hf_sm_bearer, tvb, offset, 2, FALSE);
+			offset = offset +2;
+			proto_tree_add_item(sm_tree, hf_sm_len, tvb, offset, 2, FALSE);
+			length = tvb_get_ntohs(tvb,offset);
+			offset = offset +2;
+			proto_item_set_len(ti, 16);
+
+			if (length > 0) {
+				next_tvb = tvb_new_subset(tvb, offset, length, length);
+
+				if ((msg_type == PDU_MTP3_TO_SLT || msg_type == PDU_MTP3_FROM_SLT)) {
+					call_dissector(mtp3_handle, next_tvb, pinfo, tree);
+				} else {
+					call_dissector(data_handle, next_tvb, pinfo, tree);
+				}
+			}
+		}
+	}
+
+}
+
+void
+proto_reg_handoff_sm(void)
+{
+	sdp_handle  = find_dissector("sdp");
+	mtp3_handle = find_dissector("mtp3");
+	data_handle = find_dissector("data");
+}
+
+void
+proto_register_sm(void)
+{                 
+	static hf_register_info hf[] = {
+		{ &hf_sm_sm_msg_type,
+			{ "SM Message Type",           "sm.sm_msg_type",
+			FT_UINT32, BASE_HEX, NULL, 0x0,          
+			"", HFILL }
+		},
+		{ &hf_sm_protocol,
+			{ "Protocol Type",           "sm.protocol",
+			FT_UINT16, BASE_HEX, NULL, 0x0,          
+			"", HFILL }
+		},
+		{ &hf_sm_msg_id,
+			{ "Message ID",           "sm.msgid",
+			FT_UINT16, BASE_HEX, NULL, 0x0,          
+			"", HFILL }
+		},
+		{ &hf_sm_msg_type,
+			{ "Message Type",           "sm.msg_type",
+			FT_UINT16, BASE_HEX, NULL, 0x0,          
+			"", HFILL }
+		},
+		{ &hf_sm_channel,
+			{ "Channel ID",           "sm.channel",
+			FT_UINT16, BASE_HEX, NULL, 0x0,          
+			"", HFILL }
+		},
+		{ &hf_sm_bearer,
+			{ "Bearer ID",           "sm.bearer",
+			FT_UINT16, BASE_HEX, NULL, 0x0,          
+			"", HFILL }
+		},
+		{ &hf_sm_len,
+			{ "Length",           "sm.len",
+			FT_UINT16, BASE_DEC, NULL, 0x0,          
+			"", HFILL }
+		},
+		{ &hf_sm_ip_addr,
+			{ "IPv4 address","sm.ip_addr",
+			FT_IPv4,BASE_NONE,  NULL, 0x0,          
+			"IPv4 address", HFILL }
+		},
+		{ &hf_sm_context,
+			{ "Context","sm.context",
+			FT_UINT32, BASE_DEC, NULL, 0x0,          
+			"Context(guesswork!)", HFILL }
+		},
+		{ &hf_sm_eisup_msg_id,
+			{ "Message id","sm.eisup_message_id",
+			FT_UINT8, BASE_DEC, NULL, 0x0,          
+			"Message id(guesswork!)", HFILL }
+		},
+		{ &hf_sm_tag,
+			{ "Tag","sm.tag",
+			FT_UINT16, BASE_DEC, NULL, 0x0,          
+			"Tag(guesswork!)", HFILL }
+		},
+	};
+
+/* Setup protocol subtree array */
+	static gint *ett[] = {
+		&ett_sm,
+	};
+
+/* Register the protocol name and description */
+	proto_sm = proto_register_protocol("Cisco Session Management",
+	    "SM", "sm");
+
+	register_dissector("sm", dissect_sm, proto_sm);
+
+/* Required function calls to register the header fields and subtrees used */
+	proto_register_field_array(proto_sm, hf, array_length(hf));
+	proto_register_subtree_array(ett, array_length(ett));
+}