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      1 /*
      2  * Copyright 2023 The OpenSSL Project Authors. All Rights Reserved.
      3  *
      4  * Licensed under the Apache License 2.0 (the "License").  You may not use
      5  * this file except in compliance with the License.  You can obtain a copy
      6  * in the file LICENSE in the source distribution or at
      7  * https://www.openssl.org/source/license.html
      8  */
      9 
     10 #include <openssl/evp.h>
     11 #include "testutil.h"
     12 
     13 /*
     14  * Test that the default libctx does not get initialised when using a custom
     15  * libctx. We assume that this test application has been executed such that the
     16  * null provider is loaded via the config file.
     17  */
     18 static int test_no_deflt_ctx_init(void)
     19 {
     20     int testresult = 0;
     21     EVP_MD *md = NULL;
     22     OSSL_LIB_CTX *ctx = OSSL_LIB_CTX_new();
     23 
     24     if (!TEST_ptr(ctx))
     25         return 0;
     26 
     27     md = EVP_MD_fetch(ctx, "SHA2-256", NULL);
     28     if (!TEST_ptr(md))
     29         goto err;
     30 
     31     /*
     32      * Since we're using a non-default libctx above, the default libctx should
     33      * not have been initialised via config file, and so it is not too late to
     34      * use OPENSSL_INIT_NO_LOAD_CONFIG.
     35      */
     36     OPENSSL_init_crypto(OPENSSL_INIT_NO_LOAD_CONFIG, NULL);
     37 
     38     /*
     39      * If the config file was incorrectly loaded then the null provider will
     40      * have been initialised and the default provider loading will have been
     41      * blocked. If the config file was NOT loaded (as we expect) then the
     42      * default provider should be available.
     43      */
     44     if (!TEST_true(OSSL_PROVIDER_available(NULL, "default")))
     45         goto err;
     46     if (!TEST_false(OSSL_PROVIDER_available(NULL, "null")))
     47         goto err;
     48 
     49     testresult = 1;
     50  err:
     51     EVP_MD_free(md);
     52     OSSL_LIB_CTX_free(ctx);
     53     return testresult;
     54 }
     55 
     56 int setup_tests(void)
     57 {
     58     ADD_TEST(test_no_deflt_ctx_init);
     59     return 1;
     60 }
     61