Source : http://net-snmp.svn.sourceforge.net/viewvc/net-snmp?revision=16984&view=revision

------------------------------------------------------------------------------------------
--- a/agent/mibgroup/disman/event/mteObjects.h	Wed Sep 28 16:36:38 2005
+++ b/agent/mibgroup/disman/event/mteObjects.h	Fri Mar 29 07:56:26 2013
@@ -53,6 +53,7 @@
                                  char *owner,   char   *oname,
                                  oid  *suffix,  size_t  sfx_len );
 int  mteObjects_internal_vblist( netsnmp_variable_list *vblist,
-                                 char *oname,   struct mteTrigger *trigger);
+                                 char *oname,   struct mteTrigger *trigger,
+								  netsnmp_session *s);
 
 #endif                          /* MTEOBJECTS_H */
--- a/agent/mibgroup/disman/event/mteObjects.c	Tue Sep 19 12:06:06 2006
+++ b/agent/mibgroup/disman/event/mteObjects.c	Fri Mar 29 08:06:13 2013
@@ -335,7 +335,9 @@
 
 int
 mteObjects_internal_vblist( netsnmp_variable_list *vblist,
-                            char   *oname, struct mteTrigger *trigger)
+                            char   *oname,
+							 struct mteTrigger *trigger,
+							 netsnmp_session   *sess)
 {
     netsnmp_variable_list *var = NULL, *vp;
     oid mteHotTrigger[] = {1, 3, 6, 1, 2, 1, 88, 2, 1, 1, 0};
@@ -343,7 +345,12 @@
     oid mteHotContext[] = {1, 3, 6, 1, 2, 1, 88, 2, 1, 3, 0};
     oid mteHotOID[]     = {1, 3, 6, 1, 2, 1, 88, 2, 1, 4, 0};
     oid mteHotValue[]   = {1, 3, 6, 1, 2, 1, 88, 2, 1, 5, 0};
+	oid ifIndexOid[]    = {1, 3, 6, 1, 2, 1, 2, 2, 1, 1, 0};
+	oid ifAdminStatus[] = {1, 3, 6, 1, 2, 1, 2, 2, 1, 7, 0};
+	oid ifOperStatus[]  = {1, 3, 6, 1, 2, 1, 2, 2, 1, 8, 0};
 
+	oid if_index;
+
     /*
      * Construct the varbinds for this (internal) event...
      */
@@ -370,6 +377,40 @@
                               trigger->mteTriggerFired->type,
                               trigger->mteTriggerFired->val.string,
                               trigger->mteTriggerFired->val_len);
+	} else if ((!strcmp(oname, "_linkUpDown"  ))) {
+		/*
+		 * The ifOperStatus varbind that triggered this entry
+		 * is held in the trigger->mteTriggerFired field
+		 *
+		 * We can retrieve the ifIndex and ifOperStatus values
+		 * from this varbind.  But first we need to tweak the
+		 * static ifXXX OID arrays to include the correct index.
+		 * (or this could be passed in from the calling routine?)
+		 *
+		 * Unfortunately we don't have the current AdminStatus value,
+		 * so we'll need to make another query to retrieve that.
+		 */
+		if_index = trigger->mteTriggerFired->name[10];
+		ifIndexOid[10] = if_index;
+		ifAdminStatus[10] = if_index;
+		ifOperStatus[10] = if_index;
+		snmp_varlist_add_variable( &var,
+				ifIndexOid, OID_LENGTH(ifIndexOid),
+				ASN_INTEGER, &if_index, sizeof(if_index));
+
+		/* Set up a dummy varbind for ifAdminStatus... */
+		snmp_varlist_add_variable( &var,
+				ifAdminStatus, OID_LENGTH(ifAdminStatus),
+				ASN_INTEGER,
+				trigger->mteTriggerFired->val.integer,
+				trigger->mteTriggerFired->val_len);
+		/* ... then retrieve the actual value */
+		netsnmp_query_get(var->next_variable, sess);
+		snmp_varlist_add_variable( &var,
+				ifOperStatus, OID_LENGTH(ifOperStatus),
+				ASN_INTEGER,
+				trigger->mteTriggerFired->val.integer,
+				trigger->mteTriggerFired->val_len);
     } else {
         DEBUGMSGTL(("disman:event:objects",
                     "Unknown internal objects tag (%s)\n", oname));
--- a/agent/mibgroup/disman/event/mteEvent.c	Mon Jul  2 07:02:29 2007
+++ b/agent/mibgroup/disman/event/mteEvent.c	Fri Mar 29 09:46:24 2013
@@ -266,7 +266,7 @@
     return fired;
 }
 
-
+#ifdef __NOT_NEEDED
 void
 _insert_internal_objects( netsnmp_variable_list *vblist, char *oname,
                           struct mteTrigger *trigger)
@@ -322,6 +322,7 @@
     vp->next_variable     = vblist->next_variable;
     vblist->next_variable = var;
 }
+#endif
 
 int
 _mteEvent_fire_notify( struct mteEvent   *entry,     /* The event to fire  */
@@ -331,6 +332,8 @@
     netsnmp_variable_list *var, *v2;
     oid    snmptrap_oid[]   = { 1,3,6,1,6,3,1,1,4,1,0 };
     size_t snmptrap_oid_len = OID_LENGTH(snmptrap_oid);
+	netsnmp_session *s;
+
          /*
           * The Event-MIB specification says that objects from the
           *   mteEventTable should come after those from the trigger,
@@ -394,9 +397,10 @@
      */
     v2 = var->next_variable;
     if (entry->session)
-        netsnmp_query_get( v2, entry->session );
+		s = entry->session;
     else
-        netsnmp_query_get( v2, trigger->session );
+		s = trigger->session;
+	netsnmp_query_get( v2, s );
 
     /*
      * ... add any "internal" objects...
@@ -405,11 +409,11 @@
     if (strcmp(entry->mteNotifyOwner, "_snmpd") == 0) {
         DEBUGMSGTL(("disman:event:fire", "Adding event objects (internal)\n"));
         if ( !strictOrdering ) {
-            mteObjects_internal_vblist(var, entry->mteNotifyObjects, trigger);
+            mteObjects_internal_vblist(var, entry->mteNotifyObjects, trigger, s);
         } else {
             for (v2 = var; v2 && v2->next_variable; v2=v2->next_variable)
                 ;
-            mteObjects_internal_vblist(v2, entry->mteNotifyObjects, trigger);
+            mteObjects_internal_vblist(v2, entry->mteNotifyObjects, trigger, s);
         }
     }