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/*************************************************
* Library Internal/Global State Header File *
* (C) 1999-2008 Jack Lloyd *
*************************************************/
#ifndef BOTAN_LIB_STATE_H__
#define BOTAN_LIB_STATE_H__
#include <botan/base.h>
#include <botan/init.h>
#include <string>
#include <vector>
#include <map>
namespace Botan {
/*************************************************
* Global State Container Base *
*************************************************/
class BOTAN_DLL Library_State
{
public:
Library_State();
~Library_State();
void initialize(const InitializerOptions&, Modules&);
void load(Modules&);
void add_engine(class Engine*);
class BOTAN_DLL Engine_Iterator
{
public:
class Engine* next();
Engine_Iterator(const Library_State& l) : lib(l) { n = 0; }
private:
const Library_State& lib;
u32bit n;
};
friend class Engine_Iterator;
Allocator* get_allocator(const std::string& = "") const;
void add_allocator(Allocator*);
void set_default_allocator(const std::string&) const;
bool rng_is_seeded() const { return rng->is_seeded(); }
void randomize(byte[], u32bit);
byte random();
void set_prng(RandomNumberGenerator*);
void add_entropy_source(EntropySource*, bool = true);
void add_entropy(const byte[], u32bit);
void add_entropy(EntropySource&, bool);
u32bit seed_prng(bool, u32bit);
RandomNumberGenerator& prng_reference() { return (*rng); }
class Config& config() const;
class Mutex* get_mutex() const;
private:
Library_State(const Library_State&) {}
Library_State& operator=(const Library_State&) { return (*this); }
class Engine* get_engine_n(u32bit) const;
class Mutex_Factory* mutex_factory;
mutable class Config* config_obj;
class Mutex* allocator_lock;
std::map<std::string, Allocator*> alloc_factory;
mutable Allocator* cached_default_allocator;
class Mutex* rng_lock;
RandomNumberGenerator* rng;
std::vector<Allocator*> allocators;
std::vector<EntropySource*> entropy_sources;
class Mutex* engine_lock;
std::vector<class Engine*> engines;
};
/*************************************************
* Global State *
*************************************************/
BOTAN_DLL Library_State& global_state();
BOTAN_DLL void set_global_state(Library_State*);
BOTAN_DLL Library_State* swap_global_state(Library_State*);
}
#endif
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