1 files changed, 84 insertions, 0 deletions

diff --git a/xbmc/utils/CryptThreading.cpp b/xbmc/utils/CryptThreading.cpp
new file mode 100644
index 0000000..3484635
--- /dev/null
+++ b/xbmc/utils/CryptThreading.cpp
@@ -0,0 +1,84 @@
+/*
+ *  Copyright (C) 2005-2018 Team Kodi
+ *  This file is part of Kodi - https://kodi.tv
+ *
+ *  SPDX-License-Identifier: GPL-2.0-or-later
+ *  See LICENSES/README.md for more information.
+ */
+
+#include "CryptThreading.h"
+#if (OPENSSL_VERSION_NUMBER < 0x10100000L)
+
+#include "threads/Thread.h"
+#include "utils/log.h"
+
+#include <atomic>
+
+namespace
+{
+
+CCriticalSection* getlock(int index)
+{
+  return g_cryptThreadingInitializer.GetLock(index);
+}
+
+void lock_callback(int mode, int type, const char* file, int line)
+{
+  if (mode & CRYPTO_LOCK)
+    getlock(type)->lock();
+  else
+    getlock(type)->unlock();
+}
+
+unsigned long GetCryptThreadId()
+{
+  static std::atomic<unsigned long> tidSequence{0};
+  static thread_local unsigned long tidTl{0};
+
+  if (tidTl == 0)
+    tidTl = ++tidSequence;
+  return tidTl;
+}
+
+void thread_id(CRYPTO_THREADID* tid)
+{
+  // C-style cast required due to vastly differing native ID return types
+  CRYPTO_THREADID_set_numeric(tid, GetCryptThreadId());
+}
+
+}
+
+CryptThreadingInitializer::CryptThreadingInitializer()
+{
+  // OpenSSL < 1.1 needs integration code to support multi-threading
+  // This is absolutely required for libcurl if it uses the OpenSSL backend
+  m_locks.resize(CRYPTO_num_locks());
+  CRYPTO_THREADID_set_callback(thread_id);
+  CRYPTO_set_locking_callback(lock_callback);
+}
+
+CryptThreadingInitializer::~CryptThreadingInitializer()
+{
+  CSingleLock l(m_locksLock);
+  CRYPTO_set_locking_callback(nullptr);
+  m_locks.clear();
+}
+
+CCriticalSection* CryptThreadingInitializer::GetLock(int index)
+{
+  CSingleLock l(m_locksLock);
+  auto& curlock = m_locks[index];
+  if (!curlock)
+  {
+    curlock.reset(new CCriticalSection());
+  }
+
+  return curlock.get();
+}
+
+unsigned long CryptThreadingInitializer::GetCurrentCryptThreadId()
+{
+  return GetCryptThreadId();
+}
+
+#endif