/src/openssl/crypto/provider_conf.c

Source (jump to first uncovered line)
/*
 * Copyright 2019-2023 The OpenSSL Project Authors. All Rights Reserved.
 *
 * Licensed under the Apache License 2.0 (the "License").  You may not use
 * this file except in compliance with the License.  You can obtain a copy
 * in the file LICENSE in the source distribution or at
 * https://www.openssl.org/source/license.html
 */

#include <string.h>
#include <openssl/trace.h>
#include <openssl/err.h>
#include <openssl/conf.h>
#include <openssl/safestack.h>
#include <openssl/provider.h>
#include "internal/provider.h"
#include "internal/cryptlib.h"
#include "provider_local.h"
#include "crypto/context.h"

DEFINE_STACK_OF(OSSL_PROVIDER)

/* PROVIDER config module */

typedef struct {
    CRYPTO_RWLOCK *lock;
    STACK_OF(OSSL_PROVIDER) *activated_providers;
} PROVIDER_CONF_GLOBAL;

void *ossl_prov_conf_ctx_new(OSSL_LIB_CTX *libctx)
{
    PROVIDER_CONF_GLOBAL *pcgbl = OPENSSL_zalloc(sizeof(*pcgbl));

    if (pcgbl == NULL)
        return NULL;

    pcgbl->lock = CRYPTO_THREAD_lock_new();
    if (pcgbl->lock == NULL) {
        OPENSSL_free(pcgbl);
        return NULL;
    }

    return pcgbl;
}

void ossl_prov_conf_ctx_free(void *vpcgbl)
{
    PROVIDER_CONF_GLOBAL *pcgbl = vpcgbl;

    sk_OSSL_PROVIDER_pop_free(pcgbl->activated_providers,
                              ossl_provider_free);

    OSSL_TRACE(CONF, "Cleaned up providers\n");
    CRYPTO_THREAD_lock_free(pcgbl->lock);
    OPENSSL_free(pcgbl);
}

static const char *skip_dot(const char *name)
{
    const char *p = strchr(name, '.');

    if (p != NULL)
        return p + 1;
    return name;
}

/*
 * Parse the provider params section
 * Returns:
 * 1 for success
 * 0 for non-fatal errors
 * < 0 for fatal errors
 */
static int provider_conf_params_internal(OSSL_PROVIDER *prov,
                                         OSSL_PROVIDER_INFO *provinfo,
                                         const char *name, const char *value,
                                         const CONF *cnf,
                                         STACK_OF(OPENSSL_CSTRING) *visited)
{
    STACK_OF(CONF_VALUE) *sect;
    int ok = 1;
    int rc = 0;

    sect = NCONF_get_section(cnf, value);
    if (sect != NULL) {
        int i;
        char buffer[512];
        size_t buffer_len = 0;

        OSSL_TRACE1(CONF, "Provider params: start section %s\n", value);

        /*
         * Check to see if the provided section value has already
         * been visited.  If it has, then we have a recursive lookup
         * in the configuration which isn't valid.  As such we should error
         * out
         */
        for (i = 0; i < sk_OPENSSL_CSTRING_num(visited); i++) {
            if (sk_OPENSSL_CSTRING_value(visited, i) == value) {
                ERR_raise(ERR_LIB_CONF, CONF_R_RECURSIVE_SECTION_REFERENCE);
                return -1;
            }
        }

        /*
         * We've not visited this node yet, so record it on the stack
         */
        if (!sk_OPENSSL_CSTRING_push(visited, value))
            return -1;

        if (name != NULL) {
            OPENSSL_strlcpy(buffer, name, sizeof(buffer));
            OPENSSL_strlcat(buffer, ".", sizeof(buffer));
            buffer_len = strlen(buffer);
        }

        for (i = 0; i < sk_CONF_VALUE_num(sect); i++) {
            CONF_VALUE *sectconf = sk_CONF_VALUE_value(sect, i);

            if (buffer_len + strlen(sectconf->name) >= sizeof(buffer)) {
                sk_OPENSSL_CSTRING_pop(visited);
                return -1;
            }
            buffer[buffer_len] = '\0';
            OPENSSL_strlcat(buffer, sectconf->name, sizeof(buffer));
            rc = provider_conf_params_internal(prov, provinfo, buffer,
                                               sectconf->value, cnf, visited);
            if (rc < 0) {
                sk_OPENSSL_CSTRING_pop(visited);
                return rc;
            }
        }
        sk_OPENSSL_CSTRING_pop(visited);

        OSSL_TRACE1(CONF, "Provider params: finish section %s\n", value);
    } else {
        OSSL_TRACE2(CONF, "Provider params: %s = %s\n", name, value);
        if (prov != NULL)
            ok = ossl_provider_add_parameter(prov, name, value);
        else
            ok = ossl_provider_info_add_parameter(provinfo, name, value);
    }

    return ok;
}

/*
 * recursively parse the provider configuration section
 * of the config file. 
 * Returns
 * 1 on success
 * 0 on non-fatal error
 * < 0 on fatal errors
 */
static int provider_conf_params(OSSL_PROVIDER *prov,
                                OSSL_PROVIDER_INFO *provinfo,
                                const char *name, const char *value,
                                const CONF *cnf)
{
    int rc;
    STACK_OF(OPENSSL_CSTRING) *visited = sk_OPENSSL_CSTRING_new_null();

    if (visited == NULL)
        return -1;

    rc = provider_conf_params_internal(prov, provinfo, name,
                                       value, cnf, visited);

    sk_OPENSSL_CSTRING_free(visited);

    return rc;
}

static int prov_already_activated(const char *name,
                                  STACK_OF(OSSL_PROVIDER) *activated)
{
    int i, max;

    if (activated == NULL)
        return 0;

    max = sk_OSSL_PROVIDER_num(activated);
    for (i = 0; i < max; i++) {
        OSSL_PROVIDER *tstprov = sk_OSSL_PROVIDER_value(activated, i);

        if (strcmp(OSSL_PROVIDER_get0_name(tstprov), name) == 0) {
            return 1;
        }
    }

    return 0;
}

/*
 * Attempt to activate a provider
 * Returns:
 * 1 on successful activation
 * 0 on failed activation for non-fatal error
 * < 0 on failed activation for fatal errors
 */
static int provider_conf_activate(OSSL_LIB_CTX *libctx, const char *name,
                                  const char *value, const char *path,
                                  int soft, const CONF *cnf)
{
    PROVIDER_CONF_GLOBAL *pcgbl
        = ossl_lib_ctx_get_data(libctx, OSSL_LIB_CTX_PROVIDER_CONF_INDEX);
    OSSL_PROVIDER *prov = NULL, *actual = NULL;
    int ok = 0;

    if (pcgbl == NULL || !CRYPTO_THREAD_write_lock(pcgbl->lock)) {
        ERR_raise(ERR_LIB_CRYPTO, ERR_R_INTERNAL_ERROR);
        return -1;
    }
    if (!prov_already_activated(name, pcgbl->activated_providers)) {
        /*
        * There is an attempt to activate a provider, so we should disable
        * loading of fallbacks. Otherwise a misconfiguration could mean the
        * intended provider does not get loaded. Subsequent fetches could
        * then fallback to the default provider - which may be the wrong
        * thing.
        */
        if (!ossl_provider_disable_fallback_loading(libctx)) {
            CRYPTO_THREAD_unlock(pcgbl->lock);
            ERR_raise(ERR_LIB_CRYPTO, ERR_R_INTERNAL_ERROR);
            return -1;
        }
        prov = ossl_provider_find(libctx, name, 1);
        if (prov == NULL)
            prov = ossl_provider_new(libctx, name, NULL, NULL, 1);
        if (prov == NULL) {
            CRYPTO_THREAD_unlock(pcgbl->lock);
            if (soft)
                ERR_clear_error();
            return (soft == 0) ? -1 : 0;
        }

        if (path != NULL)
            ossl_provider_set_module_path(prov, path);

        ok = provider_conf_params(prov, NULL, NULL, value, cnf);

        if (ok == 1) {
            if (!ossl_provider_activate(prov, 1, 0)) {
                ok = 0;
            } else if (!ossl_provider_add_to_store(prov, &actual, 0)) {
                ossl_provider_deactivate(prov, 1);
                ok = 0;
            } else if (actual != prov
                       && !ossl_provider_activate(actual, 1, 0)) {
                ossl_provider_free(actual);
                ok = 0;
            } else {
                if (pcgbl->activated_providers == NULL)
                    pcgbl->activated_providers = sk_OSSL_PROVIDER_new_null();
                if (pcgbl->activated_providers == NULL
                    || !sk_OSSL_PROVIDER_push(pcgbl->activated_providers,
                                              actual)) {
                    ossl_provider_deactivate(actual, 1);
                    ossl_provider_free(actual);
                    ok = 0;
                } else {
                    ok = 1;
                }
            }
        }

        if (ok <= 0)
            ossl_provider_free(prov);
    }
    CRYPTO_THREAD_unlock(pcgbl->lock);

    return ok;
}

static int provider_conf_parse_bool_setting(const char *confname,
                                            const char *confvalue, int *val)
{

    if (confvalue == NULL) {
        ERR_raise_data(ERR_LIB_CRYPTO, CRYPTO_R_PROVIDER_SECTION_ERROR,
                               "directive %s set to unrecognized value",
                               confname);
        return 0;
    }
    if ((strcmp(confvalue, "1") == 0)
        || (strcmp(confvalue, "yes") == 0)
        || (strcmp(confvalue, "YES") == 0)
        || (strcmp(confvalue, "true") == 0)
        || (strcmp(confvalue, "TRUE") == 0)
        || (strcmp(confvalue, "on") == 0)
        || (strcmp(confvalue, "ON") == 0)) {
            *val = 1;
    } else if ((strcmp(confvalue, "0") == 0)
               || (strcmp(confvalue, "no") == 0)
               || (strcmp(confvalue, "NO") == 0)
               || (strcmp(confvalue, "false") == 0)
               || (strcmp(confvalue, "FALSE") == 0)
               || (strcmp(confvalue, "off") == 0)
               || (strcmp(confvalue, "OFF") == 0)) {
            *val = 0;
    } else {
        ERR_raise_data(ERR_LIB_CRYPTO, CRYPTO_R_PROVIDER_SECTION_ERROR,
                               "directive %s set to unrecognized value",
                               confname);
        return 0;
    }

    return 1;
}

static int provider_conf_load(OSSL_LIB_CTX *libctx, const char *name,
                              const char *value, const CONF *cnf)
{
    int i;
    STACK_OF(CONF_VALUE) *ecmds;
    int soft = 0;
    const char *path = NULL;
    int activate = 0;
    int ok = 0;
    int added = 0;

    name = skip_dot(name);
    OSSL_TRACE1(CONF, "Configuring provider %s\n", name);
    /* Value is a section containing PROVIDER commands */
    ecmds = NCONF_get_section(cnf, value);

    if (!ecmds) {
        ERR_raise_data(ERR_LIB_CRYPTO, CRYPTO_R_PROVIDER_SECTION_ERROR,
                       "section=%s not found", value);
        return 0;
    }

    /* Find the needed data first */
    for (i = 0; i < sk_CONF_VALUE_num(ecmds); i++) {
        CONF_VALUE *ecmd = sk_CONF_VALUE_value(ecmds, i);
        const char *confname = skip_dot(ecmd->name);
        const char *confvalue = ecmd->value;

        OSSL_TRACE2(CONF, "Provider command: %s = %s\n",
                    confname, confvalue);

        /* First handle some special pseudo confs */

        /* Override provider name to use */
        if (strcmp(confname, "identity") == 0) {
            name = confvalue;
        } else if (strcmp(confname, "soft_load") == 0) {
            if (!provider_conf_parse_bool_setting(confname,
                                                  confvalue, &soft))
                return 0;
        /* Load a dynamic PROVIDER */
        } else if (strcmp(confname, "module") == 0) {
            path = confvalue;
        } else if (strcmp(confname, "activate") == 0) {
            if (!provider_conf_parse_bool_setting(confname,
                                                  confvalue, &activate))
                return 0;
        }
    }

    if (activate) {
        ok = provider_conf_activate(libctx, name, value, path, soft, cnf);
    } else {
        OSSL_PROVIDER_INFO entry;

        memset(&entry, 0, sizeof(entry));
        ok = 1;
        if (name != NULL) {
            entry.name = OPENSSL_strdup(name);
            if (entry.name == NULL)
                ok = 0;
        }
        if (ok && path != NULL) {
            entry.path = OPENSSL_strdup(path);
            if (entry.path == NULL)
                ok = 0;
        }
        if (ok)
            ok = provider_conf_params(NULL, &entry, NULL, value, cnf);
        if (ok >= 1 && (entry.path != NULL || entry.parameters != NULL)) {
            ok = ossl_provider_info_add_to_store(libctx, &entry);
            added = 1;
        }
        if (added == 0)
            ossl_provider_info_clear(&entry);
    }

    /*
     * Provider activation returns a tristate:
     * 1 for successful activation
     * 0 for non-fatal activation failure
     * < 0 for fatal activation failure
     * We return success (1) for activation, (1) for non-fatal activation
     * failure, and (0) for fatal activation failure
     */
    return ok >= 0;
}

static int provider_conf_init(CONF_IMODULE *md, const CONF *cnf)
{
    STACK_OF(CONF_VALUE) *elist;
    CONF_VALUE *cval;
    int i;

    OSSL_TRACE1(CONF, "Loading providers module: section %s\n",
                CONF_imodule_get_value(md));

    /* Value is a section containing PROVIDERs to configure */
    elist = NCONF_get_section(cnf, CONF_imodule_get_value(md));

    if (!elist) {
        ERR_raise(ERR_LIB_CRYPTO, CRYPTO_R_PROVIDER_SECTION_ERROR);
        return 0;
    }

    for (i = 0; i < sk_CONF_VALUE_num(elist); i++) {
        cval = sk_CONF_VALUE_value(elist, i);
        if (!provider_conf_load(NCONF_get0_libctx((CONF *)cnf),
                                cval->name, cval->value, cnf))
            return 0;
    }

    return 1;
}

void ossl_provider_add_conf_module(void)
{
    OSSL_TRACE(CONF, "Adding config module 'providers'\n");
    CONF_module_add("providers", provider_conf_init, NULL);
}

Coverage Report

Created: 2024-11-21 07:03

Line	Count	Source (jump to first uncovered line)
1		/*
2		* Copyright 2019-2023 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 <string.h>
11		#include <openssl/trace.h>
12		#include <openssl/err.h>
13		#include <openssl/conf.h>
14		#include <openssl/safestack.h>
15		#include <openssl/provider.h>
16		#include "internal/provider.h"
17		#include "internal/cryptlib.h"
18		#include "provider_local.h"
19		#include "crypto/context.h"
20
21		DEFINE_STACK_OF(OSSL_PROVIDER)
22
23		/* PROVIDER config module */
24
25		typedef struct {
26		CRYPTO_RWLOCK *lock;
27		STACK_OF(OSSL_PROVIDER) *activated_providers;
28		} PROVIDER_CONF_GLOBAL;
29
30		void ossl_prov_conf_ctx_new(OSSL_LIB_CTX libctx)
31	4	{
32	4	PROVIDER_CONF_GLOBAL pcgbl = OPENSSL_zalloc(sizeof(pcgbl));
33
34	4	if (pcgbl == NULL)
35	0	return NULL;
36
37	4	pcgbl->lock = CRYPTO_THREAD_lock_new();
38	4	if (pcgbl->lock == NULL) {
39	0	OPENSSL_free(pcgbl);
40	0	return NULL;
41	0	}
42
43	4	return pcgbl;
44	4	}
45
46		void ossl_prov_conf_ctx_free(void *vpcgbl)
47	4	{
48	4	PROVIDER_CONF_GLOBAL *pcgbl = vpcgbl;
49
50	4	sk_OSSL_PROVIDER_pop_free(pcgbl->activated_providers,
51	4	ossl_provider_free);
52
53	4	OSSL_TRACE(CONF, "Cleaned up providers\n");
54	4	CRYPTO_THREAD_lock_free(pcgbl->lock);
55	4	OPENSSL_free(pcgbl);
56	4	}
57
58		static const char skip_dot(const char name)
59	0	{
60	0	const char *p = strchr(name, '.');
61
62	0	if (p != NULL)
63	0	return p + 1;
64	0	return name;
65	0	}
66
67		/*
68		* Parse the provider params section
69		* Returns:
70		* 1 for success
71		* 0 for non-fatal errors
72		* < 0 for fatal errors
73		*/
74		static int provider_conf_params_internal(OSSL_PROVIDER *prov,
75		OSSL_PROVIDER_INFO *provinfo,
76		const char name, const char value,
77		const CONF *cnf,
78		STACK_OF(OPENSSL_CSTRING) *visited)
79	0	{
80	0	STACK_OF(CONF_VALUE) *sect;
81	0	int ok = 1;
82	0	int rc = 0;
83
84	0	sect = NCONF_get_section(cnf, value);
85	0	if (sect != NULL) {
86	0	int i;
87	0	char buffer[512];
88	0	size_t buffer_len = 0;
89
90	0	OSSL_TRACE1(CONF, "Provider params: start section %s\n", value);
91
92		/*
93		* Check to see if the provided section value has already
94		* been visited. If it has, then we have a recursive lookup
95		* in the configuration which isn't valid. As such we should error
96		* out
97		*/
98	0	for (i = 0; i < sk_OPENSSL_CSTRING_num(visited); i++) {
99	0	if (sk_OPENSSL_CSTRING_value(visited, i) == value) {
100	0	ERR_raise(ERR_LIB_CONF, CONF_R_RECURSIVE_SECTION_REFERENCE);
101	0	return -1;
102	0	}
103	0	}
104
105		/*
106		* We've not visited this node yet, so record it on the stack
107		*/
108	0	if (!sk_OPENSSL_CSTRING_push(visited, value))
109	0	return -1;
110
111	0	if (name != NULL) {
112	0	OPENSSL_strlcpy(buffer, name, sizeof(buffer));
113	0	OPENSSL_strlcat(buffer, ".", sizeof(buffer));
114	0	buffer_len = strlen(buffer);
115	0	}
116
117	0	for (i = 0; i < sk_CONF_VALUE_num(sect); i++) {
118	0	CONF_VALUE *sectconf = sk_CONF_VALUE_value(sect, i);
119
120	0	if (buffer_len + strlen(sectconf->name) >= sizeof(buffer)) {
121	0	sk_OPENSSL_CSTRING_pop(visited);
122	0	return -1;
123	0	}
124	0	buffer[buffer_len] = '\0';
125	0	OPENSSL_strlcat(buffer, sectconf->name, sizeof(buffer));
126	0	rc = provider_conf_params_internal(prov, provinfo, buffer,
127	0	sectconf->value, cnf, visited);
128	0	if (rc < 0) {
129	0	sk_OPENSSL_CSTRING_pop(visited);
130	0	return rc;
131	0	}
132	0	}
133	0	sk_OPENSSL_CSTRING_pop(visited);
134
135	0	OSSL_TRACE1(CONF, "Provider params: finish section %s\n", value);
136	0	} else {
137	0	OSSL_TRACE2(CONF, "Provider params: %s = %s\n", name, value);
138	0	if (prov != NULL)
139	0	ok = ossl_provider_add_parameter(prov, name, value);
140	0	else
141	0	ok = ossl_provider_info_add_parameter(provinfo, name, value);
142	0	}
143
144	0	return ok;
145	0	}
146
147		/*
148		* recursively parse the provider configuration section
149		* of the config file.
150		* Returns
151		* 1 on success
152		* 0 on non-fatal error
153		* < 0 on fatal errors
154		*/
155		static int provider_conf_params(OSSL_PROVIDER *prov,
156		OSSL_PROVIDER_INFO *provinfo,
157		const char name, const char value,
158		const CONF *cnf)
159	0	{
160	0	int rc;
161	0	STACK_OF(OPENSSL_CSTRING) *visited = sk_OPENSSL_CSTRING_new_null();
162
163	0	if (visited == NULL)
164	0	return -1;
165
166	0	rc = provider_conf_params_internal(prov, provinfo, name,
167	0	value, cnf, visited);
168
169	0	sk_OPENSSL_CSTRING_free(visited);
170
171	0	return rc;
172	0	}
173
174		static int prov_already_activated(const char *name,
175		STACK_OF(OSSL_PROVIDER) *activated)
176	0	{
177	0	int i, max;
178
179	0	if (activated == NULL)
180	0	return 0;
181
182	0	max = sk_OSSL_PROVIDER_num(activated);
183	0	for (i = 0; i < max; i++) {
184	0	OSSL_PROVIDER *tstprov = sk_OSSL_PROVIDER_value(activated, i);
185
186	0	if (strcmp(OSSL_PROVIDER_get0_name(tstprov), name) == 0) {
187	0	return 1;
188	0	}
189	0	}
190
191	0	return 0;
192	0	}
193
194		/*
195		* Attempt to activate a provider
196		* Returns:
197		* 1 on successful activation
198		* 0 on failed activation for non-fatal error
199		* < 0 on failed activation for fatal errors
200		*/
201		static int provider_conf_activate(OSSL_LIB_CTX libctx, const char name,
202		const char value, const char path,
203		int soft, const CONF *cnf)
204	0	{
205	0	PROVIDER_CONF_GLOBAL *pcgbl
206	0	= ossl_lib_ctx_get_data(libctx, OSSL_LIB_CTX_PROVIDER_CONF_INDEX);
207	0	OSSL_PROVIDER prov = NULL, actual = NULL;
208	0	int ok = 0;
209
210	0	if (pcgbl == NULL \|\| !CRYPTO_THREAD_write_lock(pcgbl->lock)) {
211	0	ERR_raise(ERR_LIB_CRYPTO, ERR_R_INTERNAL_ERROR);
212	0	return -1;
213	0	}
214	0	if (!prov_already_activated(name, pcgbl->activated_providers)) {
215		/*
216		* There is an attempt to activate a provider, so we should disable
217		* loading of fallbacks. Otherwise a misconfiguration could mean the
218		* intended provider does not get loaded. Subsequent fetches could
219		* then fallback to the default provider - which may be the wrong
220		* thing.
221		*/
222	0	if (!ossl_provider_disable_fallback_loading(libctx)) {
223	0	CRYPTO_THREAD_unlock(pcgbl->lock);
224	0	ERR_raise(ERR_LIB_CRYPTO, ERR_R_INTERNAL_ERROR);
225	0	return -1;
226	0	}
227	0	prov = ossl_provider_find(libctx, name, 1);
228	0	if (prov == NULL)
229	0	prov = ossl_provider_new(libctx, name, NULL, NULL, 1);
230	0	if (prov == NULL) {
231	0	CRYPTO_THREAD_unlock(pcgbl->lock);
232	0	if (soft)
233	0	ERR_clear_error();
234	0	return (soft == 0) ? -1 : 0;
235	0	}
236
237	0	if (path != NULL)
238	0	ossl_provider_set_module_path(prov, path);
239
240	0	ok = provider_conf_params(prov, NULL, NULL, value, cnf);
241
242	0	if (ok == 1) {
243	0	if (!ossl_provider_activate(prov, 1, 0)) {
244	0	ok = 0;
245	0	} else if (!ossl_provider_add_to_store(prov, &actual, 0)) {
246	0	ossl_provider_deactivate(prov, 1);
247	0	ok = 0;
248	0	} else if (actual != prov
249	0	&& !ossl_provider_activate(actual, 1, 0)) {
250	0	ossl_provider_free(actual);
251	0	ok = 0;
252	0	} else {
253	0	if (pcgbl->activated_providers == NULL)
254	0	pcgbl->activated_providers = sk_OSSL_PROVIDER_new_null();
255	0	if (pcgbl->activated_providers == NULL
256	0	\|\| !sk_OSSL_PROVIDER_push(pcgbl->activated_providers,
257	0	actual)) {
258	0	ossl_provider_deactivate(actual, 1);
259	0	ossl_provider_free(actual);
260	0	ok = 0;
261	0	} else {
262	0	ok = 1;
263	0	}
264	0	}
265	0	}
266
267	0	if (ok <= 0)
268	0	ossl_provider_free(prov);
269	0	}
270	0	CRYPTO_THREAD_unlock(pcgbl->lock);
271
272	0	return ok;
273	0	}
274
275		static int provider_conf_parse_bool_setting(const char *confname,
276		const char confvalue, int val)
277	0	{
278
279	0	if (confvalue == NULL) {
280	0	ERR_raise_data(ERR_LIB_CRYPTO, CRYPTO_R_PROVIDER_SECTION_ERROR,
281	0	"directive %s set to unrecognized value",
282	0	confname);
283	0	return 0;
284	0	}
285	0	if ((strcmp(confvalue, "1") == 0)
286	0	\|\| (strcmp(confvalue, "yes") == 0)
287	0	\|\| (strcmp(confvalue, "YES") == 0)
288	0	\|\| (strcmp(confvalue, "true") == 0)
289	0	\|\| (strcmp(confvalue, "TRUE") == 0)
290	0	\|\| (strcmp(confvalue, "on") == 0)
291	0	\|\| (strcmp(confvalue, "ON") == 0)) {
292	0	*val = 1;
293	0	} else if ((strcmp(confvalue, "0") == 0)
294	0	\|\| (strcmp(confvalue, "no") == 0)
295	0	\|\| (strcmp(confvalue, "NO") == 0)
296	0	\|\| (strcmp(confvalue, "false") == 0)
297	0	\|\| (strcmp(confvalue, "FALSE") == 0)
298	0	\|\| (strcmp(confvalue, "off") == 0)
299	0	\|\| (strcmp(confvalue, "OFF") == 0)) {
300	0	*val = 0;
301	0	} else {
302	0	ERR_raise_data(ERR_LIB_CRYPTO, CRYPTO_R_PROVIDER_SECTION_ERROR,
303	0	"directive %s set to unrecognized value",
304	0	confname);
305	0	return 0;
306	0	}
307
308	0	return 1;
309	0	}
310
311		static int provider_conf_load(OSSL_LIB_CTX libctx, const char name,
312		const char value, const CONF cnf)
313	0	{
314	0	int i;
315	0	STACK_OF(CONF_VALUE) *ecmds;
316	0	int soft = 0;
317	0	const char *path = NULL;
318	0	int activate = 0;
319	0	int ok = 0;
320	0	int added = 0;
321
322	0	name = skip_dot(name);
323	0	OSSL_TRACE1(CONF, "Configuring provider %s\n", name);
324		/* Value is a section containing PROVIDER commands */
325	0	ecmds = NCONF_get_section(cnf, value);
326
327	0	if (!ecmds) {
328	0	ERR_raise_data(ERR_LIB_CRYPTO, CRYPTO_R_PROVIDER_SECTION_ERROR,
329	0	"section=%s not found", value);
330	0	return 0;
331	0	}
332
333		/* Find the needed data first */
334	0	for (i = 0; i < sk_CONF_VALUE_num(ecmds); i++) {
335	0	CONF_VALUE *ecmd = sk_CONF_VALUE_value(ecmds, i);
336	0	const char *confname = skip_dot(ecmd->name);
337	0	const char *confvalue = ecmd->value;
338
339	0	OSSL_TRACE2(CONF, "Provider command: %s = %s\n",
340	0	confname, confvalue);
341
342		/* First handle some special pseudo confs */
343
344		/* Override provider name to use */
345	0	if (strcmp(confname, "identity") == 0) {
346	0	name = confvalue;
347	0	} else if (strcmp(confname, "soft_load") == 0) {
348	0	if (!provider_conf_parse_bool_setting(confname,
349	0	confvalue, &soft))
350	0	return 0;
351		/* Load a dynamic PROVIDER */
352	0	} else if (strcmp(confname, "module") == 0) {
353	0	path = confvalue;
354	0	} else if (strcmp(confname, "activate") == 0) {
355	0	if (!provider_conf_parse_bool_setting(confname,
356	0	confvalue, &activate))
357	0	return 0;
358	0	}
359	0	}
360
361	0	if (activate) {
362	0	ok = provider_conf_activate(libctx, name, value, path, soft, cnf);
363	0	} else {
364	0	OSSL_PROVIDER_INFO entry;
365
366	0	memset(&entry, 0, sizeof(entry));
367	0	ok = 1;
368	0	if (name != NULL) {
369	0	entry.name = OPENSSL_strdup(name);
370	0	if (entry.name == NULL)
371	0	ok = 0;
372	0	}
373	0	if (ok && path != NULL) {
374	0	entry.path = OPENSSL_strdup(path);
375	0	if (entry.path == NULL)
376	0	ok = 0;
377	0	}
378	0	if (ok)
379	0	ok = provider_conf_params(NULL, &entry, NULL, value, cnf);
380	0	if (ok >= 1 && (entry.path != NULL \|\| entry.parameters != NULL)) {
381	0	ok = ossl_provider_info_add_to_store(libctx, &entry);
382	0	added = 1;
383	0	}
384	0	if (added == 0)
385	0	ossl_provider_info_clear(&entry);
386	0	}
387
388		/*
389		* Provider activation returns a tristate:
390		* 1 for successful activation
391		* 0 for non-fatal activation failure
392		* < 0 for fatal activation failure
393		* We return success (1) for activation, (1) for non-fatal activation
394		* failure, and (0) for fatal activation failure
395		*/
396	0	return ok >= 0;
397	0	}
398
399		static int provider_conf_init(CONF_IMODULE md, const CONF cnf)
400	0	{
401	0	STACK_OF(CONF_VALUE) *elist;
402	0	CONF_VALUE *cval;
403	0	int i;
404
405	0	OSSL_TRACE1(CONF, "Loading providers module: section %s\n",
406	0	CONF_imodule_get_value(md));
407
408		/* Value is a section containing PROVIDERs to configure */
409	0	elist = NCONF_get_section(cnf, CONF_imodule_get_value(md));
410
411	0	if (!elist) {
412	0	ERR_raise(ERR_LIB_CRYPTO, CRYPTO_R_PROVIDER_SECTION_ERROR);
413	0	return 0;
414	0	}
415
416	0	for (i = 0; i < sk_CONF_VALUE_num(elist); i++) {
417	0	cval = sk_CONF_VALUE_value(elist, i);
418	0	if (!provider_conf_load(NCONF_get0_libctx((CONF *)cnf),
419	0	cval->name, cval->value, cnf))
420	0	return 0;
421	0	}
422
423	0	return 1;
424	0	}
425
426		void ossl_provider_add_conf_module(void)
427	0	{
428	0	OSSL_TRACE(CONF, "Adding config module 'providers'\n");
429	0	CONF_module_add("providers", provider_conf_init, NULL);
430	0	}