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fixed race condition of openssl calls

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orignal 2015-12-31 16:02:10 -05:00
parent 8daa7561fa
commit ef4dc3cbc9
5 changed files with 45 additions and 3 deletions
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31
Crypto.cpp
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@ -1,9 +1,13 @@
#include <string.h>
#include <string>
#include <vector>
#include <mutex>
#include <openssl/sha.h>
#include <openssl/dh.h>
#include <openssl/md5.h>
#include <openssl/rand.h>
#include <openssl/ssl.h>
#include <openssl/crypto.h>
#include "Log.h"
//#include "TunnelBase.h"
#include "Crypto.h"
@ -677,6 +681,33 @@ namespace crypto
m_IVDecryption.Decrypt ((ChipherBlock *)out, (ChipherBlock *)out); // double iv
#endif
}
std::vector <std::unique_ptr<std::mutex> > m_OpenSSLMutexes;
static void OpensslLockingCallback(int mode, int type, const char * file, int line)
{
if (type > 0 && (size_t)type < m_OpenSSLMutexes.size ())
{
if (mode & CRYPTO_LOCK)
m_OpenSSLMutexes[type]->lock ();
else
m_OpenSSLMutexes[type]->unlock ();
}
}
void InitCrypto ()
{
SSL_library_init ();
auto numLocks = CRYPTO_num_locks();
for (int i = 0; i < numLocks; i++)
m_OpenSSLMutexes.emplace_back (new std::mutex);
CRYPTO_set_locking_callback (OpensslLockingCallback);
}
void TerminateCrypto ()
{
CRYPTO_set_locking_callback (nullptr);
m_OpenSSLMutexes.clear ();
}
}
}