2 * Copyright 2016-2017 The OpenSSL Project Authors. All Rights Reserved.
4 * Licensed under the OpenSSL license (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
14 #include <openssl/err.h>
15 #include <openssl/lhash.h>
16 #include "store_locl.h"
18 static CRYPTO_RWLOCK *registry_lock;
19 static CRYPTO_ONCE registry_init = CRYPTO_ONCE_STATIC_INIT;
21 DEFINE_RUN_ONCE_STATIC(do_registry_init)
23 registry_lock = CRYPTO_THREAD_lock_new();
24 return registry_lock != NULL;
28 * Functions for manipulating OSSL_STORE_LOADERs
31 OSSL_STORE_LOADER *OSSL_STORE_LOADER_new(ENGINE *e, const char *scheme)
33 OSSL_STORE_LOADER *res = OPENSSL_zalloc(sizeof(*res));
36 OSSL_STOREerr(OSSL_STORE_F_OSSL_STORE_LOADER_NEW, ERR_R_MALLOC_FAILURE);
41 * We usually don't check NULL arguments. For loaders, though, the
42 * scheme is crucial and must never be NULL, or the user will get
43 * mysterious errors when trying to register the created loader
47 OSSL_STOREerr(OSSL_STORE_F_OSSL_STORE_LOADER_NEW,
48 OSSL_STORE_R_INVALID_SCHEME);
57 const ENGINE *OSSL_STORE_LOADER_get0_engine(const OSSL_STORE_LOADER *loader)
59 return loader->engine;
62 const char *OSSL_STORE_LOADER_get0_scheme(const OSSL_STORE_LOADER *loader)
64 return loader->scheme;
67 int OSSL_STORE_LOADER_set_open(OSSL_STORE_LOADER *loader,
68 OSSL_STORE_open_fn open_function)
70 loader->open = open_function;
74 int OSSL_STORE_LOADER_set_ctrl(OSSL_STORE_LOADER *loader,
75 OSSL_STORE_ctrl_fn ctrl_function)
77 loader->ctrl = ctrl_function;
81 int OSSL_STORE_LOADER_set_load(OSSL_STORE_LOADER *loader,
82 OSSL_STORE_load_fn load_function)
84 loader->load = load_function;
88 int OSSL_STORE_LOADER_set_eof(OSSL_STORE_LOADER *loader,
89 OSSL_STORE_eof_fn eof_function)
91 loader->eof = eof_function;
95 int OSSL_STORE_LOADER_set_error(OSSL_STORE_LOADER *loader,
96 OSSL_STORE_error_fn error_function)
98 loader->error = error_function;
102 int OSSL_STORE_LOADER_set_close(OSSL_STORE_LOADER *loader,
103 OSSL_STORE_close_fn close_function)
105 loader->close = close_function;
109 void OSSL_STORE_LOADER_free(OSSL_STORE_LOADER *loader)
111 OPENSSL_free(loader);
115 * Functions for registering OSSL_STORE_LOADERs
118 static unsigned long store_loader_hash(const OSSL_STORE_LOADER *v)
120 return OPENSSL_LH_strhash(v->scheme);
123 static int store_loader_cmp(const OSSL_STORE_LOADER *a,
124 const OSSL_STORE_LOADER *b)
126 assert(a->scheme != NULL && b->scheme != NULL);
127 return strcmp(a->scheme, b->scheme);
130 static LHASH_OF(OSSL_STORE_LOADER) *loader_register = NULL;
132 int ossl_store_register_loader_int(OSSL_STORE_LOADER *loader)
134 const char *scheme = loader->scheme;
138 * Check that the given scheme conforms to correct scheme syntax as per
141 * scheme = ALPHA *( ALPHA / DIGIT / "+" / "-" / "." )
143 if (isalpha(*scheme))
144 while (*scheme != '\0'
147 || strchr("+-.", *scheme) != NULL))
149 if (*scheme != '\0') {
150 OSSL_STOREerr(OSSL_STORE_F_OSSL_STORE_REGISTER_LOADER_INT,
151 OSSL_STORE_R_INVALID_SCHEME);
152 ERR_add_error_data(4, "scheme=", loader->scheme);
156 if (!RUN_ONCE(®istry_init, do_registry_init)) {
157 OSSL_STOREerr(OSSL_STORE_F_OSSL_STORE_REGISTER_LOADER_INT,
158 ERR_R_MALLOC_FAILURE);
161 CRYPTO_THREAD_write_lock(registry_lock);
163 if (loader_register == NULL) {
164 loader_register = lh_OSSL_STORE_LOADER_new(store_loader_hash,
168 if (loader_register != NULL
169 && (lh_OSSL_STORE_LOADER_insert(loader_register, loader) != NULL
170 || lh_OSSL_STORE_LOADER_error(loader_register) == 0))
173 CRYPTO_THREAD_unlock(registry_lock);
177 int OSSL_STORE_register_loader(OSSL_STORE_LOADER *loader)
179 if (!ossl_store_init_once())
181 return ossl_store_register_loader_int(loader);
184 const OSSL_STORE_LOADER *ossl_store_get0_loader_int(const char *scheme)
186 OSSL_STORE_LOADER template;
187 OSSL_STORE_LOADER *loader = NULL;
189 template.scheme = scheme;
190 template.open = NULL;
191 template.load = NULL;
193 template.close = NULL;
195 if (!ossl_store_init_once())
198 if (!RUN_ONCE(®istry_init, do_registry_init)) {
199 OSSL_STOREerr(OSSL_STORE_F_OSSL_STORE_GET0_LOADER_INT,
200 ERR_R_MALLOC_FAILURE);
203 CRYPTO_THREAD_write_lock(registry_lock);
205 loader = lh_OSSL_STORE_LOADER_retrieve(loader_register, &template);
207 if (loader == NULL) {
208 OSSL_STOREerr(OSSL_STORE_F_OSSL_STORE_GET0_LOADER_INT,
209 OSSL_STORE_R_UNREGISTERED_SCHEME);
210 ERR_add_error_data(2, "scheme=", scheme);
213 CRYPTO_THREAD_unlock(registry_lock);
218 OSSL_STORE_LOADER *ossl_store_unregister_loader_int(const char *scheme)
220 OSSL_STORE_LOADER template;
221 OSSL_STORE_LOADER *loader = NULL;
223 template.scheme = scheme;
224 template.open = NULL;
225 template.load = NULL;
227 template.close = NULL;
229 if (!RUN_ONCE(®istry_init, do_registry_init)) {
230 OSSL_STOREerr(OSSL_STORE_F_OSSL_STORE_UNREGISTER_LOADER_INT,
231 ERR_R_MALLOC_FAILURE);
234 CRYPTO_THREAD_write_lock(registry_lock);
236 loader = lh_OSSL_STORE_LOADER_delete(loader_register, &template);
238 if (loader == NULL) {
239 OSSL_STOREerr(OSSL_STORE_F_OSSL_STORE_UNREGISTER_LOADER_INT,
240 OSSL_STORE_R_UNREGISTERED_SCHEME);
241 ERR_add_error_data(2, "scheme=", scheme);
244 CRYPTO_THREAD_unlock(registry_lock);
248 OSSL_STORE_LOADER *OSSL_STORE_unregister_loader(const char *scheme)
250 if (!ossl_store_init_once())
252 return ossl_store_unregister_loader_int(scheme);
255 void ossl_store_destroy_loaders_int(void)
257 assert(lh_OSSL_STORE_LOADER_num_items(loader_register) == 0);
258 lh_OSSL_STORE_LOADER_free(loader_register);
259 loader_register = NULL;
260 CRYPTO_THREAD_lock_free(registry_lock);
261 registry_lock = NULL;
265 * Functions to list OSSL_STORE loaders
268 IMPLEMENT_LHASH_DOALL_ARG_CONST(OSSL_STORE_LOADER, void);
269 int OSSL_STORE_do_all_loaders(void (*do_function) (const OSSL_STORE_LOADER
270 *loader, void *do_arg),
273 lh_OSSL_STORE_LOADER_doall_void(loader_register, do_function, do_arg);