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Diffstat (limited to 'src/libstate/engine/engine.cpp')
| -rw-r--r-- | src/libstate/engine/engine.cpp | 202 |
1 files changed, 0 insertions, 202 deletions
diff --git a/src/libstate/engine/engine.cpp b/src/libstate/engine/engine.cpp deleted file mode 100644 index c6a82f5fc..000000000 --- a/src/libstate/engine/engine.cpp +++ /dev/null @@ -1,202 +0,0 @@ -/** -* Engine Base Class -* (C) 1999-2007 Jack Lloyd -*/ - -#include <botan/engine.h> -#include <botan/stl_util.h> -#include <botan/mode_pad.h> - -namespace Botan { - -namespace { - -/************************************************* -* Algorithm Cache * -*************************************************/ -template<typename T> -class Algorithm_Cache_Impl : public Engine::Algorithm_Cache<T> - { - public: - T* get(const std::string& name) const - { - Mutex_Holder lock(mutex); - return search_map(mappings, name); - } - - void add(T* algo, const std::string& index_name = "") const - { - if(!algo) - return; - - Mutex_Holder lock(mutex); - - const std::string name = - (index_name != "" ? index_name : algo->name()); - - if(mappings.find(name) != mappings.end()) - delete mappings[name]; - mappings[name] = algo; - } - - Algorithm_Cache_Impl(Mutex* m) : mutex(m) {} - - ~Algorithm_Cache_Impl() - { - typename std::map<std::string, T*>::iterator i = mappings.begin(); - - while(i != mappings.end()) - { - delete i->second; - ++i; - } - delete mutex; - } - private: - Mutex* mutex; - mutable std::map<std::string, T*> mappings; - }; - -} - -/************************************************* -* Acquire a BlockCipher * -*************************************************/ -const BlockCipher* -Engine::prototype_block_cipher(const SCAN_Name& request, - Algorithm_Factory& af) const - { - // This needs to respect provider settings - BlockCipher* algo = cache_of_bc->get(request.as_string()); - if(algo) - return algo; - - // cache miss: do full search - algo = find_block_cipher(request, af); - if(algo) - cache_of_bc->add(algo, request.as_string()); - - return algo; - } - -/************************************************* -* Acquire a StreamCipher * -*************************************************/ -const StreamCipher* -Engine::prototype_stream_cipher(const SCAN_Name& request, - Algorithm_Factory& af) const - { - // This needs to respect provider settings - StreamCipher* algo = cache_of_sc->get(request.as_string()); - if(algo) - return algo; - - // cache miss: do full search - algo = find_stream_cipher(request, af); - if(algo) - cache_of_sc->add(algo, request.as_string()); - - return algo; - } - -/************************************************* -* Acquire a HashFunction * -*************************************************/ -const HashFunction* -Engine::prototype_hash_function(const SCAN_Name& request, - Algorithm_Factory& af) const - { - // This needs to respect provider settings - HashFunction* algo = cache_of_hf->get(request.as_string()); - if(algo) - return algo; - - // cache miss: do full search - algo = find_hash(request, af); - if(algo) - cache_of_hf->add(algo, request.as_string()); - - return algo; - } - -/************************************************* -* Acquire a MessageAuthenticationCode * -*************************************************/ -const MessageAuthenticationCode* -Engine::prototype_mac(const SCAN_Name& request, - Algorithm_Factory& af) const - { - // This needs to respect provider settings - MessageAuthenticationCode* algo = cache_of_mac->get(request.as_string()); - if(algo) - return algo; - - // cache miss: do full search - algo = find_mac(request, af); - if(algo) - cache_of_mac->add(algo, request.as_string()); - - return algo; - } - -/************************************************* -* Add a block cipher to the lookup table * -*************************************************/ -void Engine::add_algorithm(BlockCipher* algo) const - { - cache_of_bc->add(algo); - } - -/************************************************* -* Add a stream cipher to the lookup table * -*************************************************/ -void Engine::add_algorithm(StreamCipher* algo) const - { - cache_of_sc->add(algo); - } - -/************************************************* -* Add a hash function to the lookup table * -*************************************************/ -void Engine::add_algorithm(HashFunction* algo) const - { - cache_of_hf->add(algo); - } - -/************************************************* -* Add a MAC to the lookup table * -*************************************************/ -void Engine::add_algorithm(MessageAuthenticationCode* algo) const - { - cache_of_mac->add(algo); - } - -void Engine::initialize(Mutex_Factory& mf) - { - cache_of_bc = new Algorithm_Cache_Impl<BlockCipher>(mf.make()); - cache_of_sc = new Algorithm_Cache_Impl<StreamCipher>(mf.make()); - cache_of_hf = new Algorithm_Cache_Impl<HashFunction>(mf.make()); - cache_of_mac = - new Algorithm_Cache_Impl<MessageAuthenticationCode>(mf.make()); - } - -Engine::Engine() - { - cache_of_bc = 0; - cache_of_sc = 0; - cache_of_hf = 0; - cache_of_mac = 0; - } - -/************************************************* -* Destroy an Engine * -*************************************************/ -Engine::~Engine() - { - delete cache_of_bc; - delete cache_of_sc; - delete cache_of_hf; - delete cache_of_mac; - } - -} |