From Neil Piercy via https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=2637 : Make the RANAP SSN configurable.

svn path=/trunk/; revision=25837

1 files changed, 26 insertions, 7 deletions

diff --git a/asn1/ranap/packet-ranap-template.c b/asn1/ranap/packet-ranap-template.c
index b4680c7921..fc1f58fc21 100644
--- a/asn1/ranap/packet-ranap-template.c
+++ b/asn1/ranap/packet-ranap-template.c
@@ -1,6 +1,6 @@
 /* packet-ranap.c
  * Routines for UMTS Node B Application Part(RANAP) packet dissection
- * Copyright 2005, Anders Broman <anders.broman@ericsson.com>
+ * Copyright 2005, Anders Broman <anders.broman[AT]ericsson.com>
  *
  * $Id$
  *
@@ -38,6 +38,7 @@
 #include <epan/emem.h>
 #include <epan/strutil.h>
 #include <epan/asn1.h>
+#include <epan/prefs.h>
 
 #include "packet-ber.h"
 #include "packet-per.h"
@@ -51,7 +52,7 @@
 #pragma warning(disable:4146)
 #endif
 
-#define SCCP_SSN_RANAP 0x8E
+#define SCCP_SSN_RANAP 142
 
 #define PNAME  "Radio Access Network Application Part"
 #define PSNAME "RANAP"
@@ -77,6 +78,9 @@ static guint32 ProcedureCode;
 static guint32 ProtocolIE_ID;
 static guint32 ProtocolExtensionID;
 
+/* Initialise the Preferences */
+static gint global_ranap_sccp_ssn = SCCP_SSN_RANAP;
+
 /* Dissector tables */
 static dissector_table_t ranap_ies_dissector_table;
 static dissector_table_t ranap_ies_p1_dissector_table;
@@ -96,6 +100,7 @@ static int dissect_InitiatingMessageValue(tvbuff_t *tvb, packet_info *pinfo, pro
 static int dissect_SuccessfulOutcomeValue(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree);
 static int dissect_UnsuccessfulOutcomeValue(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree);
 static int dissect_OutcomeValue(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree);
+void proto_reg_handoff_ranap(void);
 
 #include "packet-ranap-fn.c"
 
@@ -152,14 +157,14 @@ dissect_ranap(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
 	/* create the ranap protocol tree */
 	ranap_item = proto_tree_add_item(tree, proto_ranap, tvb, 0, -1, FALSE);
 	ranap_tree = proto_item_add_subtree(ranap_item, ett_ranap);
-	
+
 	dissect_RANAP_PDU_PDU(tvb, pinfo, ranap_tree);
 	if (pinfo->sccp_info) {
 		sccp_msg_info_t* sccp_msg = pinfo->sccp_info;
-		
+
 		if (sccp_msg->data.co.assoc)
 			sccp_msg->data.co.assoc->payload = SCCP_PLOAD_RANAP;
-		
+
 		if (! sccp_msg->data.co.label && ProcedureCode != 0xFFFFFFFF) {
 			const gchar* str = val_to_str(ProcedureCode, ranap_ProcedureCode_vals,"Unknown RANAP");
 			sccp_msg->data.co.label = se_strdup(str);
@@ -169,6 +174,7 @@ dissect_ranap(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
 
 /*--- proto_register_ranap -------------------------------------------*/
 void proto_register_ranap(void) {
+  module_t *ranap_module;
 
   /* List of fields */
 
@@ -193,7 +199,7 @@ void proto_register_ranap(void) {
   /* Register fields and subtrees */
   proto_register_field_array(proto_ranap, hf, array_length(hf));
   proto_register_subtree_array(ett, array_length(ett));
- 
+
   /* Register dissector */
   register_dissector("ranap", dissect_ranap, proto_ranap);
   ranap_handle = find_dissector("ranap");
@@ -210,6 +216,10 @@ void proto_register_ranap(void) {
 
   nas_pdu_dissector_table = register_dissector_table("ranap.nas_pdu", "RANAP NAS PDU", FT_UINT8, BASE_DEC);
 
+  ranap_module = prefs_register_protocol(proto_ranap, proto_reg_handoff_ranap);
+  prefs_register_uint_preference(ranap_module, "sccp_ssn", "SCCP SSN for RANAP",
+				 "The SCCP SubSystem Number for RANAP (default 142)", 10,
+				 &global_ranap_sccp_ssn);
 }
 
 
@@ -217,8 +227,17 @@ void proto_register_ranap(void) {
 void
 proto_reg_handoff_ranap(void)
 {
+	static int initialized = FALSE;
+	static gint local_ranap_sccp_ssn;
+
+	if (!initialized) {
+		initialized = TRUE;
+	} else {
+		dissector_delete("sccp.ssn", local_ranap_sccp_ssn, ranap_handle);
+	}
 
-	dissector_add("sccp.ssn", SCCP_SSN_RANAP, ranap_handle);
+	dissector_add("sccp.ssn", global_ranap_sccp_ssn, ranap_handle);
+	local_ranap_sccp_ssn = global_ranap_sccp_ssn;
 
 #include "packet-ranap-dis-tab.c"
 }