1 files changed, 77 insertions, 0 deletions
diff --git a/crypto/openssl/ssl/ssl_init.c b/crypto/openssl/ssl/ssl_init.c
new file mode 100644
index 000000000000..2a879bdc7851
--- /dev/null
+++ b/crypto/openssl/ssl/ssl_init.c
@@ -0,0 +1,77 @@
+/*
+ * Copyright 2016-2025 The OpenSSL Project Authors. All Rights Reserved.
+ *
+ * Licensed under the Apache License 2.0 (the "License").  You may not use
+ * this file except in compliance with the License.  You can obtain a copy
+ * in the file LICENSE in the source distribution or at
+ * https://www.openssl.org/source/license.html
+ */
+
+#include "internal/e_os.h"
+
+#include "internal/err.h"
+#include <openssl/crypto.h>
+#include <openssl/evp.h>
+#include <openssl/trace.h>
+#include "ssl_local.h"
+#include "internal/thread_once.h"
+#include "internal/rio_notifier.h"    /* for ossl_wsa_cleanup() */
+
+static int stopped;
+
+static CRYPTO_ONCE ssl_base = CRYPTO_ONCE_STATIC_INIT;
+static int ssl_base_inited = 0;
+DEFINE_RUN_ONCE_STATIC(ossl_init_ssl_base)
+{
+#ifndef OPENSSL_NO_COMP
+    OSSL_TRACE(INIT, "ossl_init_ssl_base: "
+               "SSL_COMP_get_compression_methods()\n");
+    /*
+     * This will initialise the built-in compression algorithms. The value
+     * returned is a STACK_OF(SSL_COMP), but that can be discarded safely
+     */
+    SSL_COMP_get_compression_methods();
+#endif
+    ssl_sort_cipher_list();
+    OSSL_TRACE(INIT, "ossl_init_ssl_base: SSL_add_ssl_module()\n");
+    ssl_base_inited = 1;
+    return 1;
+}
+
+/*
+ * If this function is called with a non NULL settings value then it must be
+ * called prior to any threads making calls to any OpenSSL functions,
+ * i.e. passing a non-null settings value is assumed to be single-threaded.
+ */
+int OPENSSL_init_ssl(uint64_t opts, const OPENSSL_INIT_SETTINGS *settings)
+{
+    static int stoperrset = 0;
+
+    if (stopped) {
+        if (!stoperrset) {
+            /*
+             * We only ever set this once to avoid getting into an infinite
+             * loop where the error system keeps trying to init and fails so
+             * sets an error etc
+             */
+            stoperrset = 1;
+            ERR_raise(ERR_LIB_SSL, ERR_R_INIT_FAIL);
+        }
+        return 0;
+    }
+
+    opts |= OPENSSL_INIT_ADD_ALL_CIPHERS
+         |  OPENSSL_INIT_ADD_ALL_DIGESTS;
+#ifndef OPENSSL_NO_AUTOLOAD_CONFIG
+    if ((opts & OPENSSL_INIT_NO_LOAD_CONFIG) == 0)
+        opts |= OPENSSL_INIT_LOAD_CONFIG;
+#endif
+
+    if (!OPENSSL_init_crypto(opts, settings))
+        return 0;
+
+    if (!RUN_ONCE(&ssl_base, ossl_init_ssl_base))
+        return 0;
+
+    return 1;
+}