1 /*
2 * Copyright 2020-2021 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 "apps.h"
11 #include <string.h>
12 #include <openssl/err.h>
13 #include <openssl/provider.h>
14 #include <openssl/safestack.h>
15
16 /* Non-zero if any of the provider options have been seen */
17 static int provider_option_given = 0;
18
19 DEFINE_STACK_OF(OSSL_PROVIDER)
20
21 /*
22 * See comments in opt_verify for explanation of this.
23 */
24 enum prov_range { OPT_PROV_ENUM };
25
26 static STACK_OF(OSSL_PROVIDER) *app_providers = NULL;
27
provider_free(OSSL_PROVIDER * prov)28 static void provider_free(OSSL_PROVIDER *prov)
29 {
30 OSSL_PROVIDER_unload(prov);
31 }
32
app_provider_load(OSSL_LIB_CTX * libctx,const char * provider_name)33 int app_provider_load(OSSL_LIB_CTX *libctx, const char *provider_name)
34 {
35 OSSL_PROVIDER *prov;
36
37 prov = OSSL_PROVIDER_load(libctx, provider_name);
38 if (prov == NULL) {
39 opt_printf_stderr("%s: unable to load provider %s\n"
40 "Hint: use -provider-path option or OPENSSL_MODULES environment variable.\n",
41 opt_getprog(), provider_name);
42 ERR_print_errors(bio_err);
43 return 0;
44 }
45 if (app_providers == NULL)
46 app_providers = sk_OSSL_PROVIDER_new_null();
47 if (app_providers == NULL
48 || !sk_OSSL_PROVIDER_push(app_providers, prov)) {
49 app_providers_cleanup();
50 return 0;
51 }
52 return 1;
53 }
54
app_providers_cleanup(void)55 void app_providers_cleanup(void)
56 {
57 sk_OSSL_PROVIDER_pop_free(app_providers, provider_free);
58 app_providers = NULL;
59 }
60
opt_provider_path(const char * path)61 static int opt_provider_path(const char *path)
62 {
63 if (path != NULL && *path == '\0')
64 path = NULL;
65 return OSSL_PROVIDER_set_default_search_path(app_get0_libctx(), path);
66 }
67
opt_provider(int opt)68 int opt_provider(int opt)
69 {
70 const int given = provider_option_given;
71
72 provider_option_given = 1;
73 switch ((enum prov_range)opt) {
74 case OPT_PROV__FIRST:
75 case OPT_PROV__LAST:
76 return 1;
77 case OPT_PROV_PROVIDER:
78 return app_provider_load(app_get0_libctx(), opt_arg());
79 case OPT_PROV_PROVIDER_PATH:
80 return opt_provider_path(opt_arg());
81 case OPT_PROV_PROPQUERY:
82 return app_set_propq(opt_arg());
83 }
84 /* Should never get here but if we do, undo what we did earlier */
85 provider_option_given = given;
86 return 0;
87 }
88
opt_provider_option_given(void)89 int opt_provider_option_given(void)
90 {
91 return provider_option_given;
92 }
93
