test/context_internal_test.c

   1 /*
   2  * Copyright 2019-2020 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 /* Internal tests for the OpenSSL library context */
  11
  12 #include "internal/cryptlib.h"
  13 #include "testutil.h"
  14
  15 /*
  16  * Everything between BEGIN EXAMPLE and END EXAMPLE is copied from
  17  * doc/internal/man3/ossl_lib_ctx_get_data.pod
  18  */
  19
  20 /*
  21  * ======================================================================
  22  * BEGIN EXAMPLE
  23  */
  24
  25 typedef struct foo_st {
  26     int i;
  27     void *data;
  28 } FOO;
  29
  30 static void *foo_new(OSSL_LIB_CTX *ctx)
  31 {
  32     FOO *ptr = OPENSSL_zalloc(sizeof(*ptr));
  33     if (ptr != NULL)
  34         ptr->i = 42;
  35     return ptr;
  36 }
  37 static void foo_free(void *ptr)
  38 {
  39     OPENSSL_free(ptr);
  40 }
  41 static const OSSL_LIB_CTX_METHOD foo_method = {
  42     foo_new,
  43     foo_free
  44 };
  45
  46 /*
  47  * END EXAMPLE
  48  * ======================================================================
  49  */
  50
  51 static int test_context(OSSL_LIB_CTX *ctx)
  52 {
  53     FOO *data = NULL;
  54
  55     return TEST_ptr(data = ossl_lib_ctx_get_data(ctx, 0, &foo_method))
  56         /* OPENSSL_zalloc in foo_new() initialized it to zero */
  57         && TEST_int_eq(data->i, 42);
  58 }
  59
  60 static int test_app_context(void)
  61 {
  62     OSSL_LIB_CTX *ctx = NULL;
  63     int result =
  64         TEST_ptr(ctx = OSSL_LIB_CTX_new())
  65         && test_context(ctx);
  66
  67     OSSL_LIB_CTX_free(ctx);
  68     return result;
  69 }
  70
  71 static int test_def_context(void)
  72 {
  73     return test_context(NULL);
  74 }
  75
  76 static int test_set0_default(void)
  77 {
  78     OSSL_LIB_CTX *global = OSSL_LIB_CTX_get0_global_default();
  79     OSSL_LIB_CTX *local = OSSL_LIB_CTX_new();
  80     OSSL_LIB_CTX *prev;
  81     int testresult = 0;
  82     FOO *data = NULL;
  83
  84     if (!TEST_ptr(global)
  85             || !TEST_ptr(local)
  86             || !TEST_ptr_eq(global, OSSL_LIB_CTX_set0_default(NULL))
  87             || !TEST_ptr(data = ossl_lib_ctx_get_data(local, 0, &foo_method)))
  88         goto err;
  89
  90     /* Set local "i" value to 43. Global "i" should be 42 */
  91     data->i++;
  92     if (!TEST_int_eq(data->i, 43))
  93         goto err;
  94
  95     /* The default context should still be the "global" default */
  96     if (!TEST_ptr(data = ossl_lib_ctx_get_data(NULL, 0, &foo_method))
  97             || !TEST_int_eq(data->i, 42))
  98         goto err;
  99
 100     /* Check we can change the local default context */
 101     if (!TEST_ptr(prev = OSSL_LIB_CTX_set0_default(local))
 102             || !TEST_ptr_eq(global, prev)
 103             || !TEST_ptr(data = ossl_lib_ctx_get_data(NULL, 0, &foo_method))
 104             || !TEST_int_eq(data->i, 43))
 105         goto err;
 106
 107     /* Calling OSSL_LIB_CTX_set0_default() with a NULL should be a no-op */
 108     if (!TEST_ptr_eq(local, OSSL_LIB_CTX_set0_default(NULL))
 109             || !TEST_ptr(data = ossl_lib_ctx_get_data(NULL, 0, &foo_method))
 110             || !TEST_int_eq(data->i, 43))
 111         goto err;
 112
 113     /* Global default should be unchanged */
 114     if (!TEST_ptr_eq(global, OSSL_LIB_CTX_get0_global_default()))
 115         goto err;
 116
 117     /* Check we can swap back to the global default */
 118    if (!TEST_ptr(prev = OSSL_LIB_CTX_set0_default(global))
 119             || !TEST_ptr_eq(local, prev)
 120             || !TEST_ptr(data = ossl_lib_ctx_get_data(NULL, 0, &foo_method))
 121             || !TEST_int_eq(data->i, 42))
 122         goto err;
 123
 124     testresult = 1;
 125  err:
 126     OSSL_LIB_CTX_free(local);
 127     return testresult;
 128 }
 129
 130 int setup_tests(void)
 131 {
 132     ADD_TEST(test_app_context);
 133     ADD_TEST(test_def_context);
 134     ADD_TEST(test_set0_default);
 135     return 1;
 136 }