1 /*
2 * Copyright (c) 2000, 2015, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25
26 package java.security.cert;
27
28 import java.security.AccessController;
29 import java.security.InvalidAlgorithmParameterException;
30 import java.security.NoSuchAlgorithmException;
31 import java.security.NoSuchProviderException;
32 import java.security.PrivilegedAction;
33 import java.security.Provider;
34 import java.security.Security;
35 import java.util.Collection;
36
37 import sun.security.jca.*;
38 import sun.security.jca.GetInstance.Instance;
39
40 /**
41 * A class for retrieving {@code Certificate}s and {@code CRL}s
42 * from a repository.
43 * <p>
44 * This class uses a provider-based architecture.
45 * To create a {@code CertStore}, call one of the static
46 * {@code getInstance} methods, passing in the type of
47 * {@code CertStore} desired, any applicable initialization parameters
48 * and optionally the name of the provider desired.
49 * <p>
50 * Once the {@code CertStore} has been created, it can be used to
51 * retrieve {@code Certificate}s and {@code CRL}s by calling its
52 * {@link #getCertificates(CertSelector selector) getCertificates} and
53 * {@link #getCRLs(CRLSelector selector) getCRLs} methods.
54 * <p>
55 * Unlike a {@link java.security.KeyStore KeyStore}, which provides access
56 * to a cache of private keys and trusted certificates, a
57 * {@code CertStore} is designed to provide access to a potentially
58 * vast repository of untrusted certificates and CRLs. For example, an LDAP
59 * implementation of {@code CertStore} provides access to certificates
60 * and CRLs stored in one or more directories using the LDAP protocol and the
61 * schema as defined in the RFC service attribute.
62 *
63 * <p> Every implementation of the Java platform is required to support the
64 * following standard {@code CertStore} type:
65 * <ul>
66 * <li>{@code Collection}</li>
67 * </ul>
68 * This type is described in the <a href=
69 * "{@docRoot}/../technotes/guides/security/StandardNames.html#CertStore">
70 * CertStore section</a> of the
71 * Java Cryptography Architecture Standard Algorithm Name Documentation.
72 * Consult the release documentation for your implementation to see if any
73 * other types are supported.
74 *
75 * <p>
76 * <b>Concurrent Access</b>
77 * <p>
78 * All public methods of {@code CertStore} objects must be thread-safe.
79 * That is, multiple threads may concurrently invoke these methods on a
80 * single {@code CertStore} object (or more than one) with no
81 * ill effects. This allows a {@code CertPathBuilder} to search for a
82 * CRL while simultaneously searching for further certificates, for instance.
83 * <p>
84 * The static methods of this class are also guaranteed to be thread-safe.
85 * Multiple threads may concurrently invoke the static methods defined in
86 * this class with no ill effects.
87 *
88 * @since 1.4
89 * @author Sean Mullan, Steve Hanna
90 */
91 public class CertStore {
92 /*
93 * Constant to lookup in the Security properties file to determine
94 * the default certstore type. In the Security properties file, the
95 * default certstore type is given as:
96 * <pre>
97 * certstore.type=LDAP
98 * </pre>
99 */
100 private static final String CERTSTORE_TYPE = "certstore.type";
101 private CertStoreSpi storeSpi;
102 private Provider provider;
103 private String type;
104 private CertStoreParameters params;
105
106 /**
107 * Creates a {@code CertStore} object of the given type, and
108 * encapsulates the given provider implementation (SPI object) in it.
109 *
110 * @param storeSpi the provider implementation
111 * @param provider the provider
112 * @param type the type
113 * @param params the initialization parameters (may be {@code null})
114 */
115 protected CertStore(CertStoreSpi storeSpi, Provider provider,
116 String type, CertStoreParameters params) {
117 this.storeSpi = storeSpi;
118 this.provider = provider;
119 this.type = type;
120 if (params != null)
121 this.params = (CertStoreParameters) params.clone();
122 }
123
124 /**
125 * Returns a {@code Collection} of {@code Certificate}s that
126 * match the specified selector. If no {@code Certificate}s
127 * match the selector, an empty {@code Collection} will be returned.
128 * <p>
129 * For some {@code CertStore} types, the resulting
130 * {@code Collection} may not contain <b>all</b> of the
131 * {@code Certificate}s that match the selector. For instance,
132 * an LDAP {@code CertStore} may not search all entries in the
133 * directory. Instead, it may just search entries that are likely to
134 * contain the {@code Certificate}s it is looking for.
135 * <p>
136 * Some {@code CertStore} implementations (especially LDAP
137 * {@code CertStore}s) may throw a {@code CertStoreException}
138 * unless a non-null {@code CertSelector} is provided that
139 * includes specific criteria that can be used to find the certificates.
140 * Issuer and/or subject names are especially useful criteria.
141 *
142 * @param selector A {@code CertSelector} used to select which
143 * {@code Certificate}s should be returned. Specify {@code null}
144 * to return all {@code Certificate}s (if supported).
145 * @return A {@code Collection} of {@code Certificate}s that
146 * match the specified selector (never {@code null})
147 * @throws CertStoreException if an exception occurs
148 */
149 public final Collection<? extends Certificate> getCertificates
150 (CertSelector selector) throws CertStoreException {
151 return storeSpi.engineGetCertificates(selector);
152 }
153
154 /**
155 * Returns a {@code Collection} of {@code CRL}s that
156 * match the specified selector. If no {@code CRL}s
157 * match the selector, an empty {@code Collection} will be returned.
158 * <p>
159 * For some {@code CertStore} types, the resulting
160 * {@code Collection} may not contain <b>all</b> of the
161 * {@code CRL}s that match the selector. For instance,
162 * an LDAP {@code CertStore} may not search all entries in the
163 * directory. Instead, it may just search entries that are likely to
164 * contain the {@code CRL}s it is looking for.
165 * <p>
166 * Some {@code CertStore} implementations (especially LDAP
167 * {@code CertStore}s) may throw a {@code CertStoreException}
168 * unless a non-null {@code CRLSelector} is provided that
169 * includes specific criteria that can be used to find the CRLs.
170 * Issuer names and/or the certificate to be checked are especially useful.
171 *
172 * @param selector A {@code CRLSelector} used to select which
173 * {@code CRL}s should be returned. Specify {@code null}
174 * to return all {@code CRL}s (if supported).
175 * @return A {@code Collection} of {@code CRL}s that
176 * match the specified selector (never {@code null})
177 * @throws CertStoreException if an exception occurs
178 */
179 public final Collection<? extends CRL> getCRLs(CRLSelector selector)
180 throws CertStoreException {
181 return storeSpi.engineGetCRLs(selector);
182 }
183
184 /**
185 * Returns a {@code CertStore} object that implements the specified
186 * {@code CertStore} type and is initialized with the specified
187 * parameters.
188 *
189 * <p> This method traverses the list of registered security Providers,
190 * starting with the most preferred Provider.
191 * A new CertStore object encapsulating the
192 * CertStoreSpi implementation from the first
193 * Provider that supports the specified type is returned.
194 *
195 * <p> Note that the list of registered providers may be retrieved via
196 * the {@link Security#getProviders() Security.getProviders()} method.
197 *
198 * <p>The {@code CertStore} that is returned is initialized with the
199 * specified {@code CertStoreParameters}. The type of parameters
200 * needed may vary between different types of {@code CertStore}s.
201 * Note that the specified {@code CertStoreParameters} object is
202 * cloned.
203 *
204 * @implNote
205 * The JDK Reference Implementation additionally uses the
206 * {@code jdk.security.provider.preferred} property to determine
207 * the preferred provider order for the specified algorithm. This
208 * may be different than the order of providers returned by
209 * {@link Security#getProviders() Security.getProviders()}.
210 *
211 * @param type the name of the requested {@code CertStore} type.
212 * See the CertStore section in the <a href=
213 * "{@docRoot}/../technotes/guides/security/StandardNames.html#CertStore">
214 * Java Cryptography Architecture Standard Algorithm Name Documentation</a>
215 * for information about standard types.
216 *
217 * @param params the initialization parameters (may be {@code null}).
218 *
219 * @return a {@code CertStore} object that implements the specified
220 * {@code CertStore} type.
221 *
222 * @throws NoSuchAlgorithmException if no Provider supports a
223 * CertStoreSpi implementation for the specified type.
224 *
225 * @throws InvalidAlgorithmParameterException if the specified
226 * initialization parameters are inappropriate for this
227 * {@code CertStore}.
228 *
229 * @see java.security.Provider
230 */
231 public static CertStore getInstance(String type, CertStoreParameters params)
232 throws InvalidAlgorithmParameterException,
233 NoSuchAlgorithmException {
234 try {
235 Instance instance = GetInstance.getInstance("CertStore",
236 CertStoreSpi.class, type, params);
237 return new CertStore((CertStoreSpi)instance.impl,
238 instance.provider, type, params);
239 } catch (NoSuchAlgorithmException e) {
240 return handleException(e);
241 }
242 }
243
244 private static CertStore handleException(NoSuchAlgorithmException e)
245 throws NoSuchAlgorithmException, InvalidAlgorithmParameterException {
246 Throwable cause = e.getCause();
247 if (cause instanceof InvalidAlgorithmParameterException) {
248 throw (InvalidAlgorithmParameterException)cause;
249 }
250 throw e;
251 }
252
253 /**
254 * Returns a {@code CertStore} object that implements the specified
255 * {@code CertStore} type.
256 *
257 * <p> A new CertStore object encapsulating the
258 * CertStoreSpi implementation from the specified provider
259 * is returned. The specified provider must be registered
260 * in the security provider list.
261 *
262 * <p> Note that the list of registered providers may be retrieved via
263 * the {@link Security#getProviders() Security.getProviders()} method.
264 *
265 * <p>The {@code CertStore} that is returned is initialized with the
266 * specified {@code CertStoreParameters}. The type of parameters
267 * needed may vary between different types of {@code CertStore}s.
268 * Note that the specified {@code CertStoreParameters} object is
269 * cloned.
270 *
271 * @param type the requested {@code CertStore} type.
272 * See the CertStore section in the <a href=
273 * "{@docRoot}/../technotes/guides/security/StandardNames.html#CertStore">
274 * Java Cryptography Architecture Standard Algorithm Name Documentation</a>
275 * for information about standard types.
276 *
277 * @param params the initialization parameters (may be {@code null}).
278 *
279 * @param provider the name of the provider.
280 *
281 * @return a {@code CertStore} object that implements the
282 * specified type.
283 *
284 * @throws NoSuchAlgorithmException if a CertStoreSpi
285 * implementation for the specified type is not
286 * available from the specified provider.
287 *
288 * @throws InvalidAlgorithmParameterException if the specified
289 * initialization parameters are inappropriate for this
290 * {@code CertStore}.
291 *
292 * @throws NoSuchProviderException if the specified provider is not
293 * registered in the security provider list.
294 *
295 * @exception IllegalArgumentException if the {@code provider} is
296 * null or empty.
297 *
298 * @see java.security.Provider
299 */
300 public static CertStore getInstance(String type,
301 CertStoreParameters params, String provider)
302 throws InvalidAlgorithmParameterException,
303 NoSuchAlgorithmException, NoSuchProviderException {
304 try {
305 Instance instance = GetInstance.getInstance("CertStore",
306 CertStoreSpi.class, type, params, provider);
307 return new CertStore((CertStoreSpi)instance.impl,
308 instance.provider, type, params);
309 } catch (NoSuchAlgorithmException e) {
310 return handleException(e);
311 }
312 }
313
314 /**
315 * Returns a {@code CertStore} object that implements the specified
316 * {@code CertStore} type.
317 *
318 * <p> A new CertStore object encapsulating the
319 * CertStoreSpi implementation from the specified Provider
320 * object is returned. Note that the specified Provider object
321 * does not have to be registered in the provider list.
322 *
323 * <p>The {@code CertStore} that is returned is initialized with the
324 * specified {@code CertStoreParameters}. The type of parameters
325 * needed may vary between different types of {@code CertStore}s.
326 * Note that the specified {@code CertStoreParameters} object is
327 * cloned.
328 *
329 * @param type the requested {@code CertStore} type.
330 * See the CertStore section in the <a href=
331 * "{@docRoot}/../technotes/guides/security/StandardNames.html#CertStore">
332 * Java Cryptography Architecture Standard Algorithm Name Documentation</a>
333 * for information about standard types.
334 *
335 * @param params the initialization parameters (may be {@code null}).
336 *
337 * @param provider the provider.
338 *
339 * @return a {@code CertStore} object that implements the
340 * specified type.
341 *
342 * @exception NoSuchAlgorithmException if a CertStoreSpi
343 * implementation for the specified type is not available
344 * from the specified Provider object.
345 *
346 * @throws InvalidAlgorithmParameterException if the specified
347 * initialization parameters are inappropriate for this
348 * {@code CertStore}
349 *
350 * @exception IllegalArgumentException if the {@code provider} is
351 * null.
352 *
353 * @see java.security.Provider
354 */
355 public static CertStore getInstance(String type, CertStoreParameters params,
356 Provider provider) throws NoSuchAlgorithmException,
357 InvalidAlgorithmParameterException {
358 try {
359 Instance instance = GetInstance.getInstance("CertStore",
360 CertStoreSpi.class, type, params, provider);
361 return new CertStore((CertStoreSpi)instance.impl,
362 instance.provider, type, params);
363 } catch (NoSuchAlgorithmException e) {
364 return handleException(e);
365 }
366 }
367
368 /**
369 * Returns the parameters used to initialize this {@code CertStore}.
370 * Note that the {@code CertStoreParameters} object is cloned before
371 * it is returned.
372 *
373 * @return the parameters used to initialize this {@code CertStore}
374 * (may be {@code null})
375 */
376 public final CertStoreParameters getCertStoreParameters() {
377 return (params == null ? null : (CertStoreParameters) params.clone());
378 }
379
380 /**
381 * Returns the type of this {@code CertStore}.
382 *
383 * @return the type of this {@code CertStore}
384 */
385 public final String getType() {
386 return this.type;
387 }
388
389 /**
390 * Returns the provider of this {@code CertStore}.
391 *
392 * @return the provider of this {@code CertStore}
393 */
394 public final Provider getProvider() {
395 return this.provider;
396 }
397
398 /**
399 * Returns the default {@code CertStore} type as specified by the
400 * {@code certstore.type} security property, or the string
401 * {@literal "LDAP"} if no such property exists.
402 *
403 * <p>The default {@code CertStore} type can be used by applications
404 * that do not want to use a hard-coded type when calling one of the
405 * {@code getInstance} methods, and want to provide a default
406 * {@code CertStore} type in case a user does not specify its own.
407 *
408 * <p>The default {@code CertStore} type can be changed by setting
409 * the value of the {@code certstore.type} security property to the
410 * desired type.
411 *
412 * @see java.security.Security security properties
413 * @return the default {@code CertStore} type as specified by the
414 * {@code certstore.type} security property, or the string
415 * {@literal "LDAP"} if no such property exists.
416 */
417 public static final String getDefaultType() {
418 String cstype;
419 cstype = AccessController.doPrivileged(new PrivilegedAction<>() {
420 public String run() {
421 return Security.getProperty(CERTSTORE_TYPE);
422 }
423 });
424 if (cstype == null) {
425 cstype = "LDAP";
426 }
427 return cstype;
428 }
429 }