Split off part of the core module into libstate (basically the whole

lookup/global_state piece).

Move timer and mutex directories into utils/

1 files changed, 123 insertions, 0 deletions

diff --git a/src/core/libstate/engine.h b/src/core/libstate/engine.h
new file mode 100644
index 000000000..13007e662
--- /dev/null
+++ b/src/core/libstate/engine.h
@@ -0,0 +1,123 @@
+/*************************************************
+* Engine Header File                             *
+* (C) 1999-2007 Jack Lloyd                       *
+*************************************************/
+
+#ifndef BOTAN_ENGINE_H__
+#define BOTAN_ENGINE_H__
+
+#include <botan/base.h>
+#include <botan/mutex.h>
+#include <botan/pk_ops.h>
+#include <botan/pow_mod.h>
+#include <botan/basefilt.h>
+#include <botan/enums.h>
+#include <utility>
+#include <map>
+
+namespace Botan {
+
+/*************************************************
+* Engine Base Class                              *
+*************************************************/
+class BOTAN_DLL Engine
+   {
+   public:
+      template<typename T>
+      class BOTAN_DLL Algorithm_Cache
+         {
+         public:
+            virtual T* get(const std::string&) const = 0;
+            virtual void add(T* algo, const std::string& = "") const = 0;
+            virtual ~Algorithm_Cache() {}
+         };
+
+      virtual IF_Operation* if_op(const BigInt&, const BigInt&, const BigInt&,
+                                  const BigInt&, const BigInt&, const BigInt&,
+                                  const BigInt&, const BigInt&) const;
+      virtual DSA_Operation* dsa_op(const DL_Group&, const BigInt&,
+                                    const BigInt&) const;
+      virtual NR_Operation* nr_op(const DL_Group&, const BigInt&,
+                                  const BigInt&) const;
+      virtual ELG_Operation* elg_op(const DL_Group&, const BigInt&,
+                                    const BigInt&) const;
+      virtual DH_Operation* dh_op(const DL_Group&, const BigInt&) const;
+
+      virtual Modular_Exponentiator* mod_exp(const BigInt&,
+                                             Power_Mod::Usage_Hints) const;
+
+      virtual Keyed_Filter* get_cipher(const std::string&, Cipher_Dir);
+
+      const BlockCipher* block_cipher(const std::string&) const;
+      const StreamCipher* stream_cipher(const std::string&) const;
+      const HashFunction* hash(const std::string&) const;
+      const MessageAuthenticationCode* mac(const std::string&) const;
+      const class S2K* s2k(const std::string&) const;
+      const class BlockCipherModePaddingMethod*
+         bc_pad(const std::string&) const;
+
+      void add_algorithm(BlockCipher*) const;
+      void add_algorithm(StreamCipher*) const;
+      void add_algorithm(HashFunction*) const;
+      void add_algorithm(MessageAuthenticationCode*) const;
+      void add_algorithm(class S2K*) const;
+      void add_algorithm(class BlockCipherModePaddingMethod*) const;
+
+      Engine();
+      virtual ~Engine();
+   private:
+      virtual BlockCipher* find_block_cipher(const std::string&) const;
+      virtual StreamCipher* find_stream_cipher(const std::string&) const;
+      virtual HashFunction* find_hash(const std::string&) const;
+      virtual MessageAuthenticationCode* find_mac(const std::string&) const;
+      virtual class S2K* find_s2k(const std::string&) const;
+      virtual class BlockCipherModePaddingMethod*
+         find_bc_pad(const std::string&) const;
+
+      template<typename T>
+      const T* lookup_algo(const Algorithm_Cache<T>* cache,
+                           const std::string& name,
+                           const Engine* engine,
+                           T* (Engine::*find)(const std::string&) const) const
+         {
+         T* algo = cache->get(name);
+         if(!algo)
+            {
+            algo = (engine->*find)(name);
+            if(algo)
+               cache->add(algo, name);
+            }
+         return algo;
+         }
+
+      Algorithm_Cache<BlockCipher>* cache_of_bc;
+      Algorithm_Cache<StreamCipher>* cache_of_sc;
+      Algorithm_Cache<HashFunction>* cache_of_hf;
+      Algorithm_Cache<MessageAuthenticationCode>* cache_of_mac;
+      Algorithm_Cache<BlockCipherModePaddingMethod>* cache_of_bc_pad;
+      Algorithm_Cache<S2K>* cache_of_s2k;
+   };
+
+namespace Engine_Core {
+
+/*************************************************
+* Get an operation from an Engine                *
+*************************************************/
+Modular_Exponentiator* mod_exp(const BigInt&, Power_Mod::Usage_Hints);
+
+IF_Operation* if_op(const BigInt&, const BigInt&, const BigInt&,
+                    const BigInt&, const BigInt&, const BigInt&,
+                    const BigInt&, const BigInt&);
+
+DSA_Operation* dsa_op(const DL_Group&, const BigInt&, const BigInt&);
+NR_Operation* nr_op(const DL_Group&, const BigInt&, const BigInt&);
+
+ELG_Operation* elg_op(const DL_Group&, const BigInt&, const BigInt&);
+
+DH_Operation* dh_op(const DL_Group&, const BigInt&);
+
+}
+
+}
+
+#endif