/*

* OID Registry

* (C) 1999-2008,2013 Jack Lloyd

*

* Botan is released under the Simplified BSD License (see license.txt)

*/

#include <botan/oids.h>

#include <botan/mutex.h>

namespace Botan {

namespace {

class OID_Map final

   {

   public:

      void add_oid(const OID& oid, const std::string& str)

         {

         add_str2oid(oid, str);

         add_oid2str(oid, str);

         }

      void add_str2oid(const OID& oid, const std::string& str)

         {

         lock_guard_type<mutex_type> lock(m_mutex);

         auto i = m_str2oid.find(str);

         if(i == m_str2oid.end())

            m_str2oid.insert(std::make_pair(str, oid));

         }

      void add_oid2str(const OID& oid, const std::string& str)

         {

         const std::string oid_str = oid.to_string();

         lock_guard_type<mutex_type> lock(m_mutex);

         auto i = m_oid2str.find(oid_str);

         if(i == m_oid2str.end())

            m_oid2str.insert(std::make_pair(oid_str, str));

         }

      std::string oid2str(const OID& oid)

         {

         const std::string oid_str = oid.to_string();

         lock_guard_type<mutex_type> lock(m_mutex);

         auto i = m_oid2str.find(oid_str);

         if(i != m_oid2str.end())

            return i->second;

         return "";

         }

      OID str2oid(const std::string& str)

         {

         lock_guard_type<mutex_type> lock(m_mutex);

         auto i = m_str2oid.find(str);

         if(i != m_str2oid.end())

            return i->second;

         return OID();

         }

      static OID_Map& global_registry()

         {

         static OID_Map g_map;

         return g_map;

         }

   private:

      OID_Map()

         {

         m_str2oid = OIDS::load_str2oid_map();

         m_oid2str = OIDS::load_oid2str_map();

         }

      mutex_type m_mutex;

      std::unordered_map<std::string, OID> m_str2oid;

      std::unordered_map<std::string, std::string> m_oid2str;

   };

}

void OIDS::add_oid(const OID& oid, const std::string& name)

   {

   OID_Map::global_registry().add_oid(oid, name);

   }

void OIDS::add_oidstr(const char* oidstr, const char* name)

   {

   add_oid(OID(oidstr), name);

   }

void OIDS::add_oid2str(const OID& oid, const std::string& name)

   {

   OID_Map::global_registry().add_oid2str(oid, name);

   }

void OIDS::add_str2oid(const OID& oid, const std::string& name)

   {

   OID_Map::global_registry().add_str2oid(oid, name);

   }

std::string OIDS::oid2str_or_empty(const OID& oid)

   {

   return OID_Map::global_registry().oid2str(oid);

   }

OID OIDS::str2oid_or_empty(const std::string& name)

   {

   return OID_Map::global_registry().str2oid(name);

   }

std::string OIDS::oid2str_or_throw(const OID& oid)

   {

   std::string s = OIDS::oid2str_or_empty(oid);

   if(s.empty())

      throw Lookup_Error("No name associated with OID " + oid.to_string());

   return s;

   }

}