1 files changed, 65 insertions, 0 deletions
diff --git a/agent/helpers/null.c b/agent/helpers/null.c
new file mode 100644
index 0000000..97dfc92
--- /dev/null
+++ b/agent/helpers/null.c
@@ -0,0 +1,65 @@
+#include <net-snmp/net-snmp-config.h>
+
+#include <net-snmp/net-snmp-includes.h>
+#include <net-snmp/agent/net-snmp-agent-includes.h>
+
+#include <net-snmp/agent/null.h>
+
+#if HAVE_STRING_H
+#include <string.h>
+#else
+#include <strings.h>
+#endif
+
+int
+netsnmp_register_null(oid * loc, size_t loc_len)
+{
+    return netsnmp_register_null_context(loc, loc_len, NULL);
+}
+
+int
+netsnmp_register_null_context(oid * loc, size_t loc_len,
+                              const char *contextName)
+{
+    netsnmp_handler_registration *reginfo;
+    reginfo = SNMP_MALLOC_TYPEDEF(netsnmp_handler_registration);
+    if (reginfo != NULL) {
+        reginfo->handlerName = strdup("");
+        reginfo->rootoid = loc;
+        reginfo->rootoid_len = loc_len;
+        reginfo->handler =
+            netsnmp_create_handler("null", netsnmp_null_handler);
+        if (contextName)
+            reginfo->contextName = strdup(contextName);
+        reginfo->modes = HANDLER_CAN_DEFAULT | HANDLER_CAN_GETBULK;
+    }
+    return netsnmp_register_handler(reginfo);
+}
+
+int
+netsnmp_null_handler(netsnmp_mib_handler *handler,
+                     netsnmp_handler_registration *reginfo,
+                     netsnmp_agent_request_info *reqinfo,
+                     netsnmp_request_info *requests)
+{
+    DEBUGMSGTL(("helper:null", "Got request\n"));
+
+    DEBUGMSGTL(("helper:null", "  oid:"));
+    DEBUGMSGOID(("helper:null", requests->requestvb->name,
+                 requests->requestvb->name_length));
+    DEBUGMSG(("helper:null", "\n"));
+
+    switch (reqinfo->mode) {
+    case MODE_GETNEXT:
+    case MODE_GETBULK:
+        return SNMP_ERR_NOERROR;
+
+    case MODE_GET:
+        netsnmp_request_set_error_all(requests, SNMP_NOSUCHOBJECT);
+        return SNMP_ERR_NOERROR;
+
+    default:
+        netsnmp_request_set_error_all(requests, SNMP_ERR_NOSUCHNAME);
+        return SNMP_ERR_NOERROR;
+    }
+}