/*
   +----------------------------------------------------------------------+
   | HipHop for PHP                                                       |
   +----------------------------------------------------------------------+
   | Copyright (c) 2010-present Facebook, Inc. (http://www.facebook.com)  |
   +----------------------------------------------------------------------+
   | This source file is subject to version 3.01 of the PHP license,      |
   | that is bundled with this package in the file LICENSE, and is        |
   | available through the world-wide-web at the following url:           |
   | http://www.php.net/license/3_01.txt                                  |
   | If you did not receive a copy of the PHP license and are unable to   |
   | obtain it through the world-wide-web, please send a note to          |
   | license@php.net so we can mail you a copy immediately.               |
   +----------------------------------------------------------------------+
*/

#include "hphp/util/ssl-init.h"
#include "hphp/util/mutex.h"
#include "hphp/util/process.h"
#include <openssl/crypto.h>

namespace HPHP {
///////////////////////////////////////////////////////////////////////////////

static Mutex *s_locks = nullptr;

static unsigned long callback_thread_id() {
  return (unsigned long)Process::GetThreadId();
}

static void
callback_locking(int mode, int type, const char* /*file*/, int /*line*/) {
  if (mode & CRYPTO_LOCK) {
    s_locks[type].lock();
  } else {
    s_locks[type].unlock();
  }
}

static bool s_isSSLInited = false;

struct SSLUnitializer {
  ~SSLUnitializer() {
    delete [] s_locks;
  }
};
static SSLUnitializer s_ssl_uninitializer;

void SSLInit::Init() {
  assert(!s_isSSLInited);
  s_locks = new Mutex[CRYPTO_num_locks()];
  CRYPTO_set_id_callback((unsigned long (*)())callback_thread_id);
  CRYPTO_set_locking_callback(
    (void (*)(int mode, int type, const char *file, int line))
    callback_locking);
  s_isSSLInited = true;
}

bool SSLInit::IsInited() {
  return s_isSSLInited;
}

///////////////////////////////////////////////////////////////////////////////
}
