-#if (defined(OPENSSL_VERSION_NUMBER) && OPENSSL_VERSION_NUMBER < 0x10100000L) || \
- (defined(LIBRESSL_VERSION_NUMBER) && LIBRESSL_VERSION_NUMBER < 0x20700000L)
-# define OPENSSL_LEGACY_API
-#endif
-
-/*
- * OpenSSL 1.1 made BIO opaque so we have to use functions to interact with it
- * which do not exist in previous versions. We define these inline functions so
- * we can program against the interface instead of littering the implementation
- * with ifdefs. We do the same for OPENSSL_init_ssl.
- */
-#if defined(OPENSSL_LEGACY_API)
-static int OPENSSL_init_ssl(int opts, void *settings)
-{
- GIT_UNUSED(opts);
- GIT_UNUSED(settings);
- SSL_load_error_strings();
- OpenSSL_add_ssl_algorithms();
- return 0;
-}
-
-static BIO_METHOD* BIO_meth_new(int type, const char *name)
-{
- BIO_METHOD *meth = git__calloc(1, sizeof(BIO_METHOD));
- if (!meth) {
- return NULL;
- }
-
- meth->type = type;
- meth->name = name;
-
- return meth;
-}
-
-static void BIO_meth_free(BIO_METHOD *biom)
-{
- git__free(biom);
-}
-
-static int BIO_meth_set_write(BIO_METHOD *biom, int (*write) (BIO *, const char *, int))
-{
- biom->bwrite = write;
- return 1;
-}
-
-static int BIO_meth_set_read(BIO_METHOD *biom, int (*read) (BIO *, char *, int))
-{
- biom->bread = read;
- return 1;
-}
-
-static int BIO_meth_set_puts(BIO_METHOD *biom, int (*puts) (BIO *, const char *))
-{
- biom->bputs = puts;
- return 1;
-}
-
-static int BIO_meth_set_gets(BIO_METHOD *biom, int (*gets) (BIO *, char *, int))
-
-{
- biom->bgets = gets;
- return 1;
-}
-
-static int BIO_meth_set_ctrl(BIO_METHOD *biom, long (*ctrl) (BIO *, int, long, void *))
-{
- biom->ctrl = ctrl;
- return 1;
-}
-
-static int BIO_meth_set_create(BIO_METHOD *biom, int (*create) (BIO *))
-{
- biom->create = create;
- return 1;
-}
-
-static int BIO_meth_set_destroy(BIO_METHOD *biom, int (*destroy) (BIO *))
-{
- biom->destroy = destroy;
- return 1;
-}
-
-static int BIO_get_new_index(void)
-{
- /* This exists as of 1.1 so before we'd just have 0 */
- return 0;
-}
-
-static void BIO_set_init(BIO *b, int init)
-{
- b->init = init;
-}
-
-static void BIO_set_data(BIO *a, void *ptr)
-{
- a->ptr = ptr;
-}
-
-static void *BIO_get_data(BIO *a)
-{
- return a->ptr;
-}
-
-static const unsigned char *ASN1_STRING_get0_data(const ASN1_STRING *x)
-{
- return ASN1_STRING_data((ASN1_STRING *)x);
-}
-
-# if defined(GIT_THREADS)
-static git_mutex *openssl_locks;
-
-static void openssl_locking_function(
- int mode, int n, const char *file, int line)
-{
- int lock;
-
- GIT_UNUSED(file);
- GIT_UNUSED(line);
-
- lock = mode & CRYPTO_LOCK;
-
- if (lock) {
- (void)git_mutex_lock(&openssl_locks[n]);
- } else {
- git_mutex_unlock(&openssl_locks[n]);
- }
-}
-
-static void shutdown_ssl_locking(void)
-{
- int num_locks, i;
-
- num_locks = CRYPTO_num_locks();
- CRYPTO_set_locking_callback(NULL);
-
- for (i = 0; i < num_locks; ++i)
- git_mutex_free(&openssl_locks[i]);
- git__free(openssl_locks);
-}
-# endif /* GIT_THREADS */
-#endif /* OPENSSL_LEGACY_API */