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
11 #include "internal/ctype.h"
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_glock_new("registry");
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 = NULL;
36 * We usually don't check NULL arguments. For loaders, though, the
37 * scheme is crucial and must never be NULL, or the user will get
38 * mysterious errors when trying to register the created loader
42 OSSL_STOREerr(OSSL_STORE_F_OSSL_STORE_LOADER_NEW,
43 OSSL_STORE_R_INVALID_SCHEME);
47 if ((res = OPENSSL_zalloc(sizeof(*res))) == NULL) {
48 OSSL_STOREerr(OSSL_STORE_F_OSSL_STORE_LOADER_NEW, ERR_R_MALLOC_FAILURE);
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 (ossl_isalpha(*scheme))
144 while (*scheme != '\0'
145 && (ossl_isalpha(*scheme)
146 || ossl_isdigit(*scheme)
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(2, "scheme=", loader->scheme);
156 /* Check that functions we absolutely require are present */
157 if (loader->open == NULL || loader->load == NULL || loader->eof == NULL
158 || loader->error == NULL || loader->close == NULL) {
159 OSSL_STOREerr(OSSL_STORE_F_OSSL_STORE_REGISTER_LOADER_INT,
160 OSSL_STORE_R_LOADER_INCOMPLETE);
164 if (!RUN_ONCE(®istry_init, do_registry_init)) {
165 OSSL_STOREerr(OSSL_STORE_F_OSSL_STORE_REGISTER_LOADER_INT,
166 ERR_R_MALLOC_FAILURE);
169 CRYPTO_THREAD_write_lock(registry_lock);
171 if (loader_register == NULL) {
172 loader_register = lh_OSSL_STORE_LOADER_new(store_loader_hash,
176 if (loader_register != NULL
177 && (lh_OSSL_STORE_LOADER_insert(loader_register, loader) != NULL
178 || lh_OSSL_STORE_LOADER_error(loader_register) == 0))
181 CRYPTO_THREAD_unlock(registry_lock);
185 int OSSL_STORE_register_loader(OSSL_STORE_LOADER *loader)
187 if (!ossl_store_init_once())
189 return ossl_store_register_loader_int(loader);
192 const OSSL_STORE_LOADER *ossl_store_get0_loader_int(const char *scheme)
194 OSSL_STORE_LOADER template;
195 OSSL_STORE_LOADER *loader = NULL;
197 template.scheme = scheme;
198 template.open = NULL;
199 template.load = NULL;
201 template.close = NULL;
203 if (!ossl_store_init_once())
206 if (!RUN_ONCE(®istry_init, do_registry_init)) {
207 OSSL_STOREerr(OSSL_STORE_F_OSSL_STORE_GET0_LOADER_INT,
208 ERR_R_MALLOC_FAILURE);
211 CRYPTO_THREAD_write_lock(registry_lock);
213 loader = lh_OSSL_STORE_LOADER_retrieve(loader_register, &template);
215 if (loader == NULL) {
216 OSSL_STOREerr(OSSL_STORE_F_OSSL_STORE_GET0_LOADER_INT,
217 OSSL_STORE_R_UNREGISTERED_SCHEME);
218 ERR_add_error_data(2, "scheme=", scheme);
221 CRYPTO_THREAD_unlock(registry_lock);
226 OSSL_STORE_LOADER *ossl_store_unregister_loader_int(const char *scheme)
228 OSSL_STORE_LOADER template;
229 OSSL_STORE_LOADER *loader = NULL;
231 template.scheme = scheme;
232 template.open = NULL;
233 template.load = NULL;
235 template.close = NULL;
237 if (!RUN_ONCE(®istry_init, do_registry_init)) {
238 OSSL_STOREerr(OSSL_STORE_F_OSSL_STORE_UNREGISTER_LOADER_INT,
239 ERR_R_MALLOC_FAILURE);
242 CRYPTO_THREAD_write_lock(registry_lock);
244 loader = lh_OSSL_STORE_LOADER_delete(loader_register, &template);
246 if (loader == NULL) {
247 OSSL_STOREerr(OSSL_STORE_F_OSSL_STORE_UNREGISTER_LOADER_INT,
248 OSSL_STORE_R_UNREGISTERED_SCHEME);
249 ERR_add_error_data(2, "scheme=", scheme);
252 CRYPTO_THREAD_unlock(registry_lock);
256 OSSL_STORE_LOADER *OSSL_STORE_unregister_loader(const char *scheme)
258 if (!ossl_store_init_once())
260 return ossl_store_unregister_loader_int(scheme);
263 void ossl_store_destroy_loaders_int(void)
265 assert(lh_OSSL_STORE_LOADER_num_items(loader_register) == 0);
266 lh_OSSL_STORE_LOADER_free(loader_register);
267 loader_register = NULL;
268 CRYPTO_THREAD_lock_free(registry_lock);
269 registry_lock = NULL;
273 * Functions to list OSSL_STORE loaders
276 IMPLEMENT_LHASH_DOALL_ARG_CONST(OSSL_STORE_LOADER, void);
277 int OSSL_STORE_do_all_loaders(void (*do_function) (const OSSL_STORE_LOADER
278 *loader, void *do_arg),
281 lh_OSSL_STORE_LOADER_doall_void(loader_register, do_function, do_arg);