mgmt: limit prefix length in fib/add-nexthop

This commit also makes FibManager logging more consistent.

refs #4262

Change-Id: I8e1d58eacfdf0a87d6f94182c78a157421de6f6f
diff --git a/tests/daemon/mgmt/fib-manager.t.cpp b/tests/daemon/mgmt/fib-manager.t.cpp
index 7c86e28..428b15b 100644
--- a/tests/daemon/mgmt/fib-manager.t.cpp
+++ b/tests/daemon/mgmt/fib-manager.t.cpp
@@ -1,6 +1,6 @@
 /* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
-/**
- * Copyright (c) 2014-2017,  Regents of the University of California,
+/*
+ * Copyright (c) 2014-2018,  Regents of the University of California,
  *                           Arizona Board of Regents,
  *                           Colorado State University,
  *                           University Pierre & Marie Curie, Sorbonne University,
@@ -171,6 +171,24 @@
   BOOST_CHECK_EQUAL(checkNextHop("/hello", nullopt, nullopt, 101), CheckNextHopResult::NO_FIB_ENTRY);
 }
 
+BOOST_AUTO_TEST_CASE(NameTooLong)
+{
+  Name prefix;
+  while (prefix.size() <= FIB_MAX_DEPTH) {
+    prefix.append("A");
+  }
+
+  auto req = makeControlCommandRequest("/localhost/nfd/fib/add-nexthop",
+                                       makeParameters(prefix, addFace()));
+  receiveInterest(req);
+
+  ControlResponse expected(414, "FIB entry prefix cannot exceed " +
+                                ndn::to_string(Fib::getMaxDepth()) + " components");
+  BOOST_CHECK_EQUAL(checkResponse(0, req.getName(), expected), CheckResponseResult::OK);
+
+  BOOST_CHECK_EQUAL(checkNextHop(prefix), CheckNextHopResult::NO_FIB_ENTRY);
+}
+
 BOOST_AUTO_TEST_CASE(ImplicitFaceId)
 {
   auto face1 = addFace();