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#ifndef _CRYPTINIT_HPP
#define _CRYPTINIT_HPP
#ifndef NOCRYPT
// boost thread callbacks for libgcrypt
#if defined(BOOST_HAS_PTHREADS)
static int boost_mutex_init(void **priv)
{
boost::mutex *lock = new boost::mutex();
if (!lock)
return ENOMEM;
*priv = lock;
return 0;
}
static int boost_mutex_destroy(void **lock)
{
delete reinterpret_cast<boost::mutex*>(*lock);
return 0;
}
static int boost_mutex_lock(void **lock)
{
reinterpret_cast<boost::mutex*>(*lock)->lock();
return 0;
}
static int boost_mutex_unlock(void **lock)
{
reinterpret_cast<boost::mutex*>(*lock)->unlock();
return 0;
}
static struct gcry_thread_cbs gcry_threads_boost =
{ GCRY_THREAD_OPTION_USER, NULL,
boost_mutex_init, boost_mutex_destroy,
boost_mutex_lock, boost_mutex_unlock };
#else
#error this libgcrypt thread callbacks only work with pthreads
#endif
#define MIN_GCRYPT_VERSION "1.2.0"
bool initLibGCrypt()
{
// make libgcrypt thread safe
// this must be called before any other libgcrypt call
gcry_control( GCRYCTL_SET_THREAD_CBS, &gcry_threads_boost );
// this must be called right after the GCRYCTL_SET_THREAD_CBS command
// no other function must be called till now
if( !gcry_check_version( MIN_GCRYPT_VERSION ) ) {
std::cout << "initLibGCrypt: Invalid Version of libgcrypt, should be >= " << MIN_GCRYPT_VERSION << std::endl;
return false;
}
gcry_error_t err = gcry_control (GCRYCTL_DISABLE_SECMEM, 0);
if( err ) {
char buf[STERROR_TEXT_MAX];
buf[0] = 0;
std::cout << "initLibGCrypt: Failed to disable secure memory: " << gpg_strerror_r(err, buf, STERROR_TEXT_MAX) << std::endl;
return false;
}
// Tell Libgcrypt that initialization has completed.
err = gcry_control(GCRYCTL_INITIALIZATION_FINISHED);
if( err ) {
char buf[STERROR_TEXT_MAX];
buf[0] = 0;
std::cout << "initLibGCrypt: Failed to finish initialization: " << gpg_strerror_r(err, buf, STERROR_TEXT_MAX) << std::endl;
return false;
}
cLog.msg(Log::PRIO_NOTICE) << "initLibGCrypt: libgcrypt init finished";
return true;
}
#endif
#endif
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