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
)
19 /* PROVIDER config module */
21 static STACK_OF(OSSL_PROVIDER
) *activated_providers
= NULL
;
23 static const char *skip_dot(const char *name
)
25 const char *p
= strchr(name
, '.');
32 static int provider_conf_params(OSSL_PROVIDER
*prov
,
33 const char *name
, const char *value
,
36 STACK_OF(CONF_VALUE
) *sect
;
39 sect
= NCONF_get_section(cnf
, value
);
43 size_t buffer_len
= 0;
45 OSSL_TRACE1(CONF
, "Provider params: start section %s\n", value
);
48 OPENSSL_strlcpy(buffer
, name
, sizeof(buffer
));
49 OPENSSL_strlcat(buffer
, ".", sizeof(buffer
));
50 buffer_len
= strlen(buffer
);
53 for (i
= 0; i
< sk_CONF_VALUE_num(sect
); i
++) {
54 CONF_VALUE
*sectconf
= sk_CONF_VALUE_value(sect
, i
);
56 if (buffer_len
+ strlen(sectconf
->name
) >= sizeof(buffer
))
58 buffer
[buffer_len
] = '\0';
59 OPENSSL_strlcat(buffer
, sectconf
->name
, sizeof(buffer
));
60 if (!provider_conf_params(prov
, buffer
, sectconf
->value
, cnf
))
64 OSSL_TRACE1(CONF
, "Provider params: finish section %s\n", value
);
66 OSSL_TRACE2(CONF
, "Provider params: %s = %s\n", name
, value
);
67 ok
= ossl_provider_add_parameter(prov
, name
, value
);
73 static int provider_conf_load(OSSL_LIB_CTX
*libctx
, const char *name
,
74 const char *value
, const CONF
*cnf
)
77 STACK_OF(CONF_VALUE
) *ecmds
;
79 OSSL_PROVIDER
*prov
= NULL
;
80 const char *path
= NULL
;
84 name
= skip_dot(name
);
85 OSSL_TRACE1(CONF
, "Configuring provider %s\n", name
);
86 /* Value is a section containing PROVIDER commands */
87 ecmds
= NCONF_get_section(cnf
, value
);
90 ERR_raise_data(ERR_LIB_CRYPTO
, CRYPTO_R_PROVIDER_SECTION_ERROR
,
91 "section=%s not found", value
);
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 ERR_raise(ERR_LIB_CRYPTO
, CRYPTO_R_PROVIDER_SECTION_ERROR
);
166 for (i
= 0; i
< sk_CONF_VALUE_num(elist
); i
++) {
167 cval
= sk_CONF_VALUE_value(elist
, i
);
168 if (!provider_conf_load(cnf
->libctx
, cval
->name
, cval
->value
, cnf
))
176 static void provider_conf_deinit(CONF_IMODULE
*md
)
178 sk_OSSL_PROVIDER_pop_free(activated_providers
, ossl_provider_free
);
179 activated_providers
= NULL
;
180 OSSL_TRACE(CONF
, "Cleaned up providers\n");
183 void ossl_provider_add_conf_module(void)
185 OSSL_TRACE(CONF
, "Adding config module 'providers'\n");
186 CONF_module_add("providers", provider_conf_init
, provider_conf_deinit
);