propagate from branch 'net.randombit.botan' (head 0a3348f52bf558bc2282e1066c2913a72a1aeda5)

            to branch 'net.randombit.botan.c++0x' (head 552c20ae8874f12da779fc25ea368e36e71cbfe8)

5 files changed, 51 insertions, 137 deletions

diff --git a/src/libstate/global_rng.cpp b/src/libstate/global_rng.cpp
index 2678813f1..a79c72c00 100644
--- a/src/libstate/global_rng.cpp
+++ b/src/libstate/global_rng.cpp
@@ -6,7 +6,6 @@
 */
 
 #include <botan/libstate.h>
-#include <botan/internal/mutex.h>
 
 #if defined(BOTAN_HAS_RANDPOOL)
   #include <botan/randpool.h>
@@ -107,60 +106,60 @@ class Serialized_PRNG : public RandomNumberGenerator
    public:
       void randomize(byte out[], u32bit len)
          {
-         Mutex_Holder lock(mutex);
+         std::lock_guard<std::mutex> lock(mutex);
          rng->randomize(out, len);
          }
 
       bool is_seeded() const
          {
-         Mutex_Holder lock(mutex);
+         std::lock_guard<std::mutex> lock(mutex);
          return rng->is_seeded();
          }
 
       void clear()
          {
-         Mutex_Holder lock(mutex);
+         std::lock_guard<std::mutex> lock(mutex);
          rng->clear();
          }
 
       std::string name() const
          {
-         Mutex_Holder lock(mutex);
+         std::lock_guard<std::mutex> lock(mutex);
          return rng->name();
          }
 
       void reseed(u32bit poll_bits)
          {
-         Mutex_Holder lock(mutex);
+         std::lock_guard<std::mutex> lock(mutex);
          rng->reseed(poll_bits);
          }
 
       void add_entropy_source(EntropySource* es)
          {
-         Mutex_Holder lock(mutex);
+         std::lock_guard<std::mutex> lock(mutex);
          rng->add_entropy_source(es);
          }
 
       void add_entropy(const byte in[], u32bit len)
          {
-         Mutex_Holder lock(mutex);
+         std::lock_guard<std::mutex> lock(mutex);
          rng->add_entropy(in, len);
          }
 
       // We do not own the mutex; Library_State does
-      Serialized_PRNG(RandomNumberGenerator* r, Mutex* m) :
+      Serialized_PRNG(RandomNumberGenerator* r, std::mutex& m) :
          mutex(m), rng(r) {}
 
       ~Serialized_PRNG() { delete rng; }
    private:
-      Mutex* mutex;
+      std::mutex& mutex;
       RandomNumberGenerator* rng;
    };
 
 }
 
 RandomNumberGenerator* Library_State::make_global_rng(Algorithm_Factory& af,
-                                                      Mutex* mutex)
+                                                      std::mutex& mutex)
    {
    RandomNumberGenerator* rng = 0;
 
diff --git a/src/libstate/info.txt b/src/libstate/info.txt
index 94ae8101a..a017589fc 100644
--- a/src/libstate/info.txt
+++ b/src/libstate/info.txt
@@ -35,8 +35,6 @@ hash
 kdf
 mac
 mode_pad
-mutex
-noop_mutex
 pbkdf
 pk_pad
 pubkey
diff --git a/src/libstate/init.cpp b/src/libstate/init.cpp
index e2139f42e..5fd476994 100644
--- a/src/libstate/init.cpp
+++ b/src/libstate/init.cpp
@@ -1,12 +1,11 @@
 /*
 * Default Initialization Function
-* (C) 1999-2007 Jack Lloyd
+* (C) 1999-2009 Jack Lloyd
 *
 * Distributed under the terms of the Botan license
 */
 
 #include <botan/init.h>
-#include <botan/parsing.h>
 #include <botan/libstate.h>
 #include <botan/global_state.h>
 
@@ -15,36 +14,8 @@ namespace Botan {
 /*
 * Library Initialization
 */
-void LibraryInitializer::initialize(const std::string& arg_string)
+void LibraryInitializer::initialize(const std::string&)
    {
-   bool thread_safe = false;
-
-   const std::vector<std::string> arg_list = split_on(arg_string, ' ');
-   for(u32bit j = 0; j != arg_list.size(); ++j)
-      {
-      if(arg_list[j].size() == 0)
-         continue;
-
-      std::string name, value;
-
-      if(arg_list[j].find('=') == std::string::npos)
-         {
-         name = arg_list[j];
-         value = "true";
-         }
-      else
-         {
-         std::vector<std::string> name_and_value = split_on(arg_list[j], '=');
-         name = name_and_value[0];
-         value = name_and_value[1];
-         }
-
-      bool is_on =
-         (value == "1" || value == "true" || value == "yes" || value == "on");
-
-      if(name == "thread_safe")
-         thread_safe = is_on;
-      }
 
    try
       {
@@ -56,7 +27,7 @@ void LibraryInitializer::initialize(const std::string& arg_string)
       */
       Global_State_Management::set_global_state(new Library_State);
 
-      global_state().initialize(thread_safe);
+      global_state().initialize();
       }
    catch(...)
       {
diff --git a/src/libstate/libstate.cpp b/src/libstate/libstate.cpp
index a20fc76c6..0d7463306 100644
--- a/src/libstate/libstate.cpp
+++ b/src/libstate/libstate.cpp
@@ -11,8 +11,6 @@
 #include <botan/cpuid.h>
 #include <botan/internal/defalloc.h>
 #include <botan/internal/core_engine.h>
-#include <botan/internal/mutex.h>
-#include <botan/internal/mux_noop.h>
 #include <botan/internal/stl_util.h>
 #include <botan/internal/mlock.h>
 #include <algorithm>
@@ -21,14 +19,6 @@
   #include <botan/selftest.h>
 #endif
 
-#if defined(BOTAN_HAS_MUTEX_PTHREAD)
-  #include <botan/internal/mux_pthr.h>
-#elif defined(BOTAN_HAS_MUTEX_WIN32)
-  #include <botan/internal/mux_win32.h>
-#elif defined(BOTAN_HAS_MUTEX_QT)
-  #include <botan/internal/mux_qt.h>
-#endif
-
 #if defined(BOTAN_HAS_ALLOC_MMAP)
   #include <botan/internal/mmap_mem.h>
 #endif
@@ -56,19 +46,11 @@
 namespace Botan {
 
 /*
-* Get a new mutex object
-*/
-Mutex* Library_State::get_mutex() const
-   {
-   return mutex_factory->make();
-   }
-
-/*
 * Get an allocator by its name
 */
-Allocator* Library_State::get_allocator(const std::string& type) const
+Allocator* Library_State::get_allocator(const std::string& type)
    {
-   Mutex_Holder lock(allocator_lock);
+   std::lock_guard<std::mutex> lock(allocator_lock);
 
    if(type != "")
       return search_map<std::string, Allocator*>(alloc_factory, type, 0);
@@ -88,7 +70,7 @@ Allocator* Library_State::get_allocator(const std::string& type) const
 */
 void Library_State::add_allocator(Allocator* allocator)
    {
-   Mutex_Holder lock(allocator_lock);
+   std::lock_guard<std::mutex> lock(allocator_lock);
 
    allocator->init();
 
@@ -101,11 +83,11 @@ void Library_State::add_allocator(Allocator* allocator)
 */
 void Library_State::set_default_allocator(const std::string& type)
    {
-   Mutex_Holder lock(allocator_lock);
-
    if(type == "")
       return;
 
+   std::lock_guard<std::mutex> lock(allocator_lock);
+
    default_allocator_name = type;
    cached_default_allocator = 0;
    }
@@ -114,9 +96,9 @@ void Library_State::set_default_allocator(const std::string& type)
 * Get a configuration value
 */
 std::string Library_State::get(const std::string& section,
-                               const std::string& key) const
+                               const std::string& key)
    {
-   Mutex_Holder lock(config_lock);
+   std::lock_guard<std::mutex> lock(config_lock);
 
    return search_map<std::string, std::string>(config,
                                                section + "/" + key, "");
@@ -126,9 +108,9 @@ std::string Library_State::get(const std::string& section,
 * See if a particular option has been set
 */
 bool Library_State::is_set(const std::string& section,
-                           const std::string& key) const
+                           const std::string& key)
    {
-   Mutex_Holder lock(config_lock);
+   std::lock_guard<std::mutex> lock(config_lock);
 
    return search_map(config, section + "/" + key, false, true);
    }
@@ -139,12 +121,11 @@ bool Library_State::is_set(const std::string& section,
 void Library_State::set(const std::string& section, const std::string& key,
                         const std::string& value, bool overwrite)
    {
-   Mutex_Holder lock(config_lock);
+   std::lock_guard<std::mutex> lock(config_lock);
 
    std::string full_key = section + "/" + key;
 
-   std::map<std::string, std::string>::const_iterator i =
-      config.find(full_key);
+   auto i = config.find(full_key);
 
    if(overwrite || i == config.end() || i->second == "")
       config[full_key] = value;
@@ -161,7 +142,7 @@ void Library_State::add_alias(const std::string& key, const std::string& value)
 /*
 * Dereference an alias to a fixed name
 */
-std::string Library_State::deref_alias(const std::string& key) const
+std::string Library_State::deref_alias(const std::string& key)
    {
    std::string result = key;
    while(is_set("alias", result))
@@ -184,7 +165,7 @@ Algorithm_Factory& Library_State::algorithm_factory() const
 */
 RandomNumberGenerator& Library_State::global_rng()
    {
-   Mutex_Holder lock(global_rng_lock);
+   std::lock_guard<std::mutex> lock(global_rng_lock);
 
    if(!global_rng_ptr)
       global_rng_ptr = make_global_rng(algorithm_factory(),
@@ -196,46 +177,26 @@ RandomNumberGenerator& Library_State::global_rng()
 /*
 * Load a set of modules
 */
-void Library_State::initialize(bool thread_safe)
+void Library_State::initialize()
    {
    CPUID::initialize();
 
-   if(mutex_factory)
+   if(m_algorithm_factory)
       throw Invalid_State("Library_State has already been initialized");
 
-   if(!thread_safe)
-      {
-      mutex_factory = new Noop_Mutex_Factory;
-      }
-   else
-      {
-#if defined(BOTAN_HAS_MUTEX_PTHREAD)
-      mutex_factory = new Pthread_Mutex_Factory;
-#elif defined(BOTAN_HAS_MUTEX_WIN32)
-      mutex_factory = new Win32_Mutex_Factory;
-#elif defined(BOTAN_HAS_MUTEX_QT)
-      mutex_factory Qt_Mutex_Factory;
-#else
-      throw Invalid_State("Could not find a thread-safe mutex object to use");
-#endif
-      }
-
-   allocator_lock = get_mutex();
-   config_lock = get_mutex();
-   global_rng_lock = get_mutex();
-
+   cached_default_allocator = 0;
    default_allocator_name = has_mlock() ? "locking" : "malloc";
 
    add_allocator(new Malloc_Allocator);
-   add_allocator(new Locking_Allocator(get_mutex()));
+   add_allocator(new Locking_Allocator);
 
 #if defined(BOTAN_HAS_ALLOC_MMAP)
-   add_allocator(new MemoryMapping_Allocator(get_mutex()));
+   add_allocator(new MemoryMapping_Allocator);
 #endif
 
    load_default_config();
 
-   m_algorithm_factory = new Algorithm_Factory(*mutex_factory);
+   m_algorithm_factory = new Algorithm_Factory();
 
 #if defined(BOTAN_HAS_ENGINE_GNU_MP)
    algorithm_factory().add_engine(new GMP_Engine);
@@ -269,12 +230,9 @@ void Library_State::initialize(bool thread_safe)
 */
 Library_State::Library_State()
    {
-   mutex_factory = 0;
-   allocator_lock = config_lock = 0;
    cached_default_allocator = 0;
    m_algorithm_factory = 0;
 
-   global_rng_lock = 0;
    global_rng_ptr = 0;
    }
 
@@ -284,7 +242,11 @@ Library_State::Library_State()
 Library_State::~Library_State()
    {
    delete m_algorithm_factory;
+   m_algorithm_factory = 0;
+
    delete global_rng_ptr;
+   global_rng_ptr = 0;
+
 
    cached_default_allocator = 0;
 
@@ -293,11 +255,6 @@ Library_State::~Library_State()
       allocators[j]->destroy();
       delete allocators[j];
       }
-
-   delete global_rng_lock;
-   delete allocator_lock;
-   delete mutex_factory;
-   delete config_lock;
    }
 
 }
diff --git a/src/libstate/libstate.h b/src/libstate/libstate.h
index aa957c8c9..49908a1e3 100644
--- a/src/libstate/libstate.h
+++ b/src/libstate/libstate.h
@@ -13,16 +13,15 @@
 #include <botan/algo_factory.h>
 #include <botan/rng.h>
 
+#include <mutex>
 #include <string>
 #include <vector>
 #include <map>
 
 namespace Botan {
 
-class Mutex;
-
-/**
-* Global state container aka the buritto at the center of it all
+/*
+* Global State Container Base
 */
 class BOTAN_DLL Library_State
    {
@@ -30,10 +29,10 @@ class BOTAN_DLL Library_State
       Library_State();
       ~Library_State();
 
-      /**
-      * @param thread_safe should a mutex be used for serialization
-      */
-      void initialize(bool thread_safe);
+      Library_State(const Library_State&) = delete;
+      Library_State& operator=(const Library_State&) = delete;
+
+      void initialize();
 
       /**
       * @return global Algorithm_Factory
@@ -49,7 +48,7 @@ class BOTAN_DLL Library_State
       * @param name the name of the allocator
       * @return allocator matching this name, or NULL
       */
-      Allocator* get_allocator(const std::string& name = "") const;
+      Allocator* get_allocator(const std::string& name = "");
 
       /**
       * Add a new allocator to the list of available ones
@@ -70,7 +69,7 @@ class BOTAN_DLL Library_State
       * @result the value of the parameter
       */
       std::string get(const std::string& section,
-                      const std::string& key) const;
+                      const std::string& key);
 
       /**
       * Check whether a certain parameter is set or not.
@@ -80,7 +79,7 @@ class BOTAN_DLL Library_State
       * false otherwise
       */
       bool is_set(const std::string& section,
-                  const std::string& key) const;
+                  const std::string& key);
 
       /**
       * Set a configuration parameter.
@@ -109,30 +108,20 @@ class BOTAN_DLL Library_State
       * @param alias the alias to resolve.
       * @return what the alias stands for
       */
-      std::string deref_alias(const std::string& alias) const;
-
-      /**
-      * @return newly created Mutex (free with delete)
-      */
-      Mutex* get_mutex() const;
+      std::string deref_alias(const std::string&);
    private:
       static RandomNumberGenerator* make_global_rng(Algorithm_Factory& af,
-                                                    Mutex* mutex);
+                                                    std::mutex& mutex);
 
       void load_default_config();
 
-      Library_State(const Library_State&) {}
-      Library_State& operator=(const Library_State&) { return (*this); }
-
-      class Mutex_Factory* mutex_factory;
-
-      Mutex* global_rng_lock;
+      std::mutex global_rng_lock;
       RandomNumberGenerator* global_rng_ptr;
 
-      Mutex* config_lock;
+      std::mutex config_lock;
       std::map<std::string, std::string> config;
 
-      Mutex* allocator_lock;
+      std::mutex allocator_lock;
       std::string default_allocator_name;
       std::map<std::string, Allocator*> alloc_factory;
       mutable Allocator* cached_default_allocator;