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/** |
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* This file is part of the CernVM File System. |
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*/ |
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#include "crypto/crypto_util.h" |
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#include <openssl/crypto.h> |
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#include <openssl/rand.h> |
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#include <pthread.h> |
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#include <cassert> |
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#include "crypto/openssl_version.h" |
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#include "util/platform.h" |
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#ifdef CVMFS_NAMESPACE_GUARD |
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namespace CVMFS_NAMESPACE_GUARD { |
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#endif |
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#ifndef OPENSSL_API_INTERFACE_V11 |
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namespace { |
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pthread_mutex_t *gLibcryptoLocks = NULL; |
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static void CallbackLibcryptoLock(int mode, int type, const char * /* file */, |
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int /* line */) { |
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int retval; |
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if (mode & CRYPTO_LOCK) { |
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retval = pthread_mutex_lock(&(gLibcryptoLocks[type])); |
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} else { |
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retval = pthread_mutex_unlock(&(gLibcryptoLocks[type])); |
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} |
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assert(retval == 0); |
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} |
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static unsigned long CallbackLibcryptoThreadId() { // NOLINT(runtime/int) |
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return platform_gettid(); |
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} |
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} // anonymous namespace |
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#endif |
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void crypto::InitRng() { RAND_poll(); } |
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void crypto::SetupLibcryptoMt() { |
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#ifndef OPENSSL_API_INTERFACE_V11 |
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if (gLibcryptoLocks != NULL) |
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return; |
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gLibcryptoLocks = static_cast<pthread_mutex_t *>( |
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OPENSSL_malloc(CRYPTO_num_locks() * sizeof(pthread_mutex_t))); |
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for (int i = 0; i < CRYPTO_num_locks(); ++i) { |
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int retval = pthread_mutex_init(&(gLibcryptoLocks[i]), NULL); |
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assert(retval == 0); |
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} |
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CRYPTO_set_id_callback(CallbackLibcryptoThreadId); |
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CRYPTO_set_locking_callback(CallbackLibcryptoLock); |
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#endif |
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} |
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void crypto::CleanupLibcryptoMt() { |
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#ifndef OPENSSL_API_INTERFACE_V11 |
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if (gLibcryptoLocks == NULL) |
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return; |
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CRYPTO_set_locking_callback(NULL); |
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for (int i = 0; i < CRYPTO_num_locks(); ++i) |
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pthread_mutex_destroy(&(gLibcryptoLocks[i])); |
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OPENSSL_free(gLibcryptoLocks); |
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gLibcryptoLocks = NULL; |
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#endif |
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} |
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#ifdef CVMFS_NAMESPACE_GUARD |
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} // namespace CVMFS_NAMESPACE_GUARD |
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#endif |
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