2 * Copyright 2019-2020 The OpenSSL Project Authors. All Rights Reserved.
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
11 #include <openssl/trace.h>
12 #include <openssl/err.h>
13 #include <openssl/conf.h>
14 #include <openssl/safestack.h>
15 #include "internal/provider.h"
17 DEFINE_STACK_OF(OSSL_PROVIDER
)
18 DEFINE_STACK_OF(CONF_VALUE
)
20 /* PROVIDER config module */
22 static STACK_OF(OSSL_PROVIDER
) *activated_providers
= NULL
;
24 static const char *skip_dot(const char *name
)
26 const char *p
= strchr(name
, '.');
33 static int provider_conf_params(OSSL_PROVIDER
*prov
,
34 const char *name
, const char *value
,
37 STACK_OF(CONF_VALUE
) *sect
;
40 sect
= NCONF_get_section(cnf
, value
);
44 size_t buffer_len
= 0;
46 OSSL_TRACE1(CONF
, "Provider params: start section %s\n", value
);
49 OPENSSL_strlcpy(buffer
, name
, sizeof(buffer
));
50 OPENSSL_strlcat(buffer
, ".", sizeof(buffer
));
51 buffer_len
= strlen(buffer
);
54 for (i
= 0; i
< sk_CONF_VALUE_num(sect
); i
++) {
55 CONF_VALUE
*sectconf
= sk_CONF_VALUE_value(sect
, i
);
57 if (buffer_len
+ strlen(sectconf
->name
) >= sizeof(buffer
))
59 buffer
[buffer_len
] = '\0';
60 OPENSSL_strlcat(buffer
, sectconf
->name
, sizeof(buffer
));
61 if (!provider_conf_params(prov
, buffer
, sectconf
->value
, cnf
))
65 OSSL_TRACE1(CONF
, "Provider params: finish section %s\n", value
);
67 OSSL_TRACE2(CONF
, "Provider params: %s = %s\n", name
, value
);
68 ok
= ossl_provider_add_parameter(prov
, name
, value
);
74 static int provider_conf_load(OPENSSL_CTX
*libctx
, const char *name
,
75 const char *value
, const CONF
*cnf
)
78 STACK_OF(CONF_VALUE
) *ecmds
;
80 OSSL_PROVIDER
*prov
= NULL
;
81 const char *path
= NULL
;
85 name
= skip_dot(name
);
86 OSSL_TRACE1(CONF
, "Configuring provider %s\n", name
);
87 /* Value is a section containing PROVIDER commands */
88 ecmds
= NCONF_get_section(cnf
, value
);
91 CRYPTOerr(CRYPTO_F_PROVIDER_CONF_LOAD
, CRYPTO_R_PROVIDER_SECTION_ERROR
);
95 /* Find the needed data first */
96 for (i
= 0; i
< sk_CONF_VALUE_num(ecmds
); i
++) {
97 CONF_VALUE
*ecmd
= sk_CONF_VALUE_value(ecmds
, i
);
98 const char *confname
= skip_dot(ecmd
->name
);
99 const char *confvalue
= ecmd
->value
;
101 OSSL_TRACE2(CONF
, "Provider command: %s = %s\n",
102 confname
, confvalue
);
104 /* First handle some special pseudo confs */
106 /* Override provider name to use */
107 if (strcmp(confname
, "identity") == 0)
109 else if (strcmp(confname
, "soft_load") == 0)
111 /* Load a dynamic PROVIDER */
112 else if (strcmp(confname
, "module") == 0)
114 else if (strcmp(confname
, "activate") == 0)
118 prov
= ossl_provider_find(libctx
, name
, 1);
120 prov
= ossl_provider_new(libctx
, name
, NULL
, 1);
128 ossl_provider_set_module_path(prov
, path
);
130 ok
= provider_conf_params(prov
, NULL
, value
, cnf
);
132 if (ok
&& activate
) {
133 if (!ossl_provider_activate(prov
)) {
136 if (activated_providers
== NULL
)
137 activated_providers
= sk_OSSL_PROVIDER_new_null();
138 sk_OSSL_PROVIDER_push(activated_providers
, prov
);
143 if (!(activate
&& ok
))
144 ossl_provider_free(prov
);
149 static int provider_conf_init(CONF_IMODULE
*md
, const CONF
*cnf
)
151 STACK_OF(CONF_VALUE
) *elist
;
155 OSSL_TRACE1(CONF
, "Loading providers module: section %s\n",
156 CONF_imodule_get_value(md
));
158 /* Value is a section containing PROVIDERs to configure */
159 elist
= NCONF_get_section(cnf
, CONF_imodule_get_value(md
));
162 CRYPTOerr(CRYPTO_F_PROVIDER_CONF_INIT
,
163 CRYPTO_R_PROVIDER_SECTION_ERROR
);
167 for (i
= 0; i
< sk_CONF_VALUE_num(elist
); i
++) {
168 cval
= sk_CONF_VALUE_value(elist
, i
);
169 if (!provider_conf_load(cnf
->libctx
, cval
->name
, cval
->value
, cnf
))
177 static void provider_conf_deinit(CONF_IMODULE
*md
)
179 sk_OSSL_PROVIDER_pop_free(activated_providers
, ossl_provider_free
);
180 activated_providers
= NULL
;
181 OSSL_TRACE(CONF
, "Cleaned up providers\n");
184 void ossl_provider_add_conf_module(void)
186 OSSL_TRACE(CONF
, "Adding config module 'providers'\n");
187 CONF_module_add("providers", provider_conf_init
, provider_conf_deinit
);