From 28c3cc112b64e36801c06f2d81c393e90a881130 Mon Sep 17 00:00:00 2001
From: Otto Moerbeek <otto.moerbeek@open-xchange.com>
Date: Fri, 7 Jun 2019 13:03:03 +0200
Subject: [PATCH] Simple blacklist handler for StatBag. Not configurable but
 that could easily be added if necessary.

---
 pdns/dynhandler.cc | 33 +++++++++++++++++----------------
 pdns/statbag.cc    |  6 +++++-
 pdns/statbag.hh    |  2 +-
 3 files changed, 23 insertions(+), 18 deletions(-)

diff --git a/pdns/dynhandler.cc b/pdns/dynhandler.cc
index e1ea81f82a..7f4449cefd 100644
--- a/pdns/dynhandler.cc
+++ b/pdns/dynhandler.cc
@@ -83,23 +83,24 @@ string DLPingHandler(const vector<string>&parts, Utility::pid_t ppid)
   return "PONG";
 }
 
-string DLShowHandler(const vector<string>&parts, Utility::pid_t ppid)
-try
-{
-  extern StatBag S;
-  string ret("Wrong number of parameters");
-  if(parts.size()==2) {
-    if(parts[1]=="*")
-      ret=S.directory();
-    else
-      ret=S.getValueStr(parts[1]);
-  }
+string DLShowHandler(const vector<string>&parts, Utility::pid_t ppid) {
+  std::set<string> blacklist;
+  blacklist.insert("special-memory-usage");
+  try {
+    extern StatBag S;
+    string ret("Wrong number of parameters");
+    if (parts.size() == 2) {
+      if (parts[1] == "*")
+        ret = S.directory(blacklist);
+      else
+        ret = S.getValueStr(parts[1]);
+    }
 
-  return ret;
-}
-catch(...)
-{
-  return "Unknown";
+    return ret;
+  }
+  catch (...) {
+    return "Unknown";
+  }
 }
 
 void setStatus(const string &str)
diff --git a/pdns/statbag.cc b/pdns/statbag.cc
index c4f46a5b1f..697226e92b 100644
--- a/pdns/statbag.cc
+++ b/pdns/statbag.cc
@@ -48,17 +48,21 @@ void StatBag::exists(const string &key)
     }
 }
 
-string StatBag::directory()
+string StatBag::directory(const std::set<string>& skip)
 {
   string dir;
   ostringstream o;
 
   for(const auto& i: d_stats) {
+    if (skip.find(i.first) != skip.end())
+      continue;
     o<<i.first<<"="<<*(i.second)<<",";
   }
 
 
   for(const funcstats_t::value_type& val :  d_funcstats) {
+    if (skip.find(val.first) != skip.end())
+      continue;
     o << val.first<<"="<<val.second(val.first)<<",";
   }
   dir=o.str();
diff --git a/pdns/statbag.hh b/pdns/statbag.hh
index 2c8ca2850d..e1a3998649 100644
--- a/pdns/statbag.hh
+++ b/pdns/statbag.hh
@@ -120,7 +120,7 @@ public:
   void resizeRing(const string &name, unsigned int newsize);
   unsigned int getRingSize(const string &name);
 
-  string directory(); //!< Returns a list of all data stored
+  string directory(const std::set<string>& skip); //!< Returns a list of all data stored
   vector<string> getEntries(); //!< returns a vector with datums (items)
   string getDescrip(const string &item); //!< Returns the description of this datum/item
   void exists(const string &key); //!< call this function to throw an exception in case a key does not exist
-- 
2.47.2