From 6894dca64c04936d07048c0e8cbf7e25858548c3 Mon Sep 17 00:00:00 2001
From: lloyd <lloyd@randombit.net>
Date: Fri, 10 Jan 2014 03:41:59 +0000
Subject: Move lib into src

---
 src/lib/engine/dyn_engine/dyn_engine.cpp |  63 +++++++++++++++++
 src/lib/engine/dyn_engine/dyn_engine.h   | 115 +++++++++++++++++++++++++++++++
 src/lib/engine/dyn_engine/info.txt       |  14 ++++
 3 files changed, 192 insertions(+)
 create mode 100644 src/lib/engine/dyn_engine/dyn_engine.cpp
 create mode 100644 src/lib/engine/dyn_engine/dyn_engine.h
 create mode 100644 src/lib/engine/dyn_engine/info.txt

(limited to 'src/lib/engine/dyn_engine')

diff --git a/src/lib/engine/dyn_engine/dyn_engine.cpp b/src/lib/engine/dyn_engine/dyn_engine.cpp
new file mode 100644
index 000000000..078ec4b83
--- /dev/null
+++ b/src/lib/engine/dyn_engine/dyn_engine.cpp
@@ -0,0 +1,63 @@
+/**
+* Dynamically Loaded Engine
+* (C) 2010 Jack Lloyd
+*
+* Distributed under the terms of the Botan license
+*/
+
+#include <botan/dyn_engine.h>
+#include <botan/internal/dyn_load.h>
+
+namespace Botan {
+
+namespace {
+
+extern "C" {
+   typedef Engine* (*creator_func)(void);
+   typedef u32bit (*module_version_func)(void);
+}
+
+}
+
+Dynamically_Loaded_Engine::Dynamically_Loaded_Engine(
+   const std::string& library_path) :
+   engine(nullptr)
+   {
+   lib = new Dynamically_Loaded_Library(library_path);
+
+   try
+      {
+      module_version_func get_version =
+         lib->resolve<module_version_func>("module_version");
+
+      const u32bit mod_version = get_version();
+
+      if(mod_version != 20101003)
+         throw std::runtime_error("Incompatible version in " +
+                                  library_path + " of " +
+                                  std::to_string(mod_version));
+
+      creator_func creator =
+         lib->resolve<creator_func>("create_engine");
+
+      engine = creator();
+
+      if(!engine)
+         throw std::runtime_error("Creator function in " +
+                                  library_path + " failed");
+      }
+   catch(...)
+      {
+      delete lib;
+      lib = nullptr;
+      throw;
+      }
+   }
+
+Dynamically_Loaded_Engine::~Dynamically_Loaded_Engine()
+   {
+   delete engine;
+   delete lib;
+   }
+
+}
diff --git a/src/lib/engine/dyn_engine/dyn_engine.h b/src/lib/engine/dyn_engine/dyn_engine.h
new file mode 100644
index 000000000..39e13ab36
--- /dev/null
+++ b/src/lib/engine/dyn_engine/dyn_engine.h
@@ -0,0 +1,115 @@
+/**
+* Dynamically Loaded Engine
+* (C) 2010 Jack Lloyd
+*
+* Distributed under the terms of the Botan license
+*/
+
+#ifndef BOTAN_DYN_LOADED_ENGINE_H__
+#define BOTAN_DYN_LOADED_ENGINE_H__
+
+#include <botan/engine.h>
+
+namespace Botan {
+
+/**
+* Dynamically_Loaded_Engine just proxies the requests to the underlying
+* Engine object, and handles load/unload details
+*/
+class BOTAN_DLL Dynamically_Loaded_Engine : public Engine
+   {
+   public:
+      /**
+      * @param lib_path full pathname to DLL to load
+      */
+      Dynamically_Loaded_Engine(const std::string& lib_path);
+
+      Dynamically_Loaded_Engine(const Dynamically_Loaded_Engine&) = delete;
+
+      Dynamically_Loaded_Engine& operator=(const Dynamically_Loaded_Engine&) = delete;
+
+      ~Dynamically_Loaded_Engine();
+
+      std::string provider_name() const override { return engine->provider_name(); }
+
+      BlockCipher* find_block_cipher(const SCAN_Name& algo_spec,
+                                     Algorithm_Factory& af) const override
+         {
+         return engine->find_block_cipher(algo_spec, af);
+         }
+
+      StreamCipher* find_stream_cipher(const SCAN_Name& algo_spec,
+                                       Algorithm_Factory& af) const override
+         {
+         return engine->find_stream_cipher(algo_spec, af);
+         }
+
+      HashFunction* find_hash(const SCAN_Name& algo_spec,
+                              Algorithm_Factory& af) const override
+         {
+         return engine->find_hash(algo_spec, af);
+         }
+
+      MessageAuthenticationCode* find_mac(const SCAN_Name& algo_spec,
+                                          Algorithm_Factory& af) const override
+         {
+         return engine->find_mac(algo_spec, af);
+         }
+
+      PBKDF* find_pbkdf(const SCAN_Name& algo_spec,
+                        Algorithm_Factory& af) const override
+         {
+         return engine->find_pbkdf(algo_spec, af);
+         }
+
+      Modular_Exponentiator* mod_exp(const BigInt& n,
+                                     Power_Mod::Usage_Hints hints) const override
+         {
+         return engine->mod_exp(n, hints);
+         }
+
+      Keyed_Filter* get_cipher(const std::string& algo_spec,
+                               Cipher_Dir dir,
+                               Algorithm_Factory& af)
+         {
+         return engine->get_cipher(algo_spec, dir, af);
+         }
+
+      PK_Ops::Key_Agreement*
+         get_key_agreement_op(const Private_Key& key, RandomNumberGenerator& rng) const override
+         {
+         return engine->get_key_agreement_op(key, rng);
+         }
+
+      PK_Ops::Signature*
+         get_signature_op(const Private_Key& key, RandomNumberGenerator& rng) const override
+         {
+         return engine->get_signature_op(key, rng);
+         }
+
+      PK_Ops::Verification*
+         get_verify_op(const Public_Key& key, RandomNumberGenerator& rng) const override
+         {
+         return engine->get_verify_op(key, rng);
+         }
+
+      PK_Ops::Encryption*
+         get_encryption_op(const Public_Key& key, RandomNumberGenerator& rng) const override
+         {
+         return engine->get_encryption_op(key, rng);
+         }
+
+      PK_Ops::Decryption*
+         get_decryption_op(const Private_Key& key, RandomNumberGenerator& rng) const override
+         {
+         return engine->get_decryption_op(key, rng);
+         }
+
+   private:
+      class Dynamically_Loaded_Library* lib;
+      Engine* engine;
+   };
+
+}
+
+#endif
diff --git a/src/lib/engine/dyn_engine/info.txt b/src/lib/engine/dyn_engine/info.txt
new file mode 100644
index 000000000..54379f501
--- /dev/null
+++ b/src/lib/engine/dyn_engine/info.txt
@@ -0,0 +1,14 @@
+define DYNAMICALLY_LOADED_ENGINE 20131128
+
+<header:public>
+dyn_engine.h
+</header:public>
+
+<source>
+dyn_engine.cpp
+</source>
+
+<requires>
+engine
+dyn_load
+</requires>
-- 
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