library/cpp/openssl/init/init.cpp


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#include "init.h" 
 
#include <util/generic/singleton.h> 
#include <util/generic/vector.h> 
#include <util/generic/ptr.h> 
#include <util/generic/buffer.h> 
 
#include <util/system/yassert.h> 
#include <util/system/mutex.h> 
#include <util/system/thread.h> 
 
#include <util/random/entropy.h> 
#include <util/stream/input.h> 
 
#include <openssl/bio.h> 
#include <openssl/ssl.h> 
#include <openssl/err.h> 
#include <openssl/rand.h> 
#include <openssl/conf.h> 
#include <openssl/crypto.h> 
 
namespace { 
    struct TInitSsl { 
        struct TOpensslLocks { 
            inline TOpensslLocks() 
                : Mutexes(CRYPTO_num_locks()) 
            { 
                for (auto& mpref : Mutexes) { 
                    mpref.Reset(new TMutex()); 
                } 
            } 
 
            inline void LockOP(int mode, int n) { 
                auto& mutex = *Mutexes.at(n); 
 
                if (mode & CRYPTO_LOCK) { 
                    mutex.Acquire(); 
                } else { 
                    mutex.Release(); 
                } 
            } 
 
            TVector<TAutoPtr<TMutex>> Mutexes;
        }; 
 
        inline TInitSsl() { 
            OPENSSL_init_crypto(OPENSSL_INIT_NO_ATEXIT, nullptr);
        } 
 
        inline ~TInitSsl() { 
            OPENSSL_cleanup();
        } 
 
        static void LockingFunction(int mode, int n, const char* /*file*/, int /*line*/) { 
            Singleton<TOpensslLocks>()->LockOP(mode, n); 
        } 
 
        static unsigned long ThreadIdFunction() { 
            return TThread::CurrentThreadId(); 
        } 
    }; 
} 
 
void InitOpenSSL() { 
    (void)SingletonWithPriority<TInitSsl, 0>();
}