1 /*
2 * Copyright 2015 The Netty Project
3 *
4 * The Netty Project licenses this file to you under the Apache License,
5 * version 2.0 (the "License"); you may not use this file except in compliance
6 * with the License. You may obtain a copy of the License at:
7 *
8 * https://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
12 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
13 * License for the specific language governing permissions and limitations
14 * under the License.
15 */
16
17 package io.netty.handler.ssl;
18
19 import io.netty.handler.ssl.util.KeyManagerFactoryWrapper;
20 import io.netty.handler.ssl.util.TrustManagerFactoryWrapper;
21 import io.netty.util.internal.UnstableApi;
22
23 import javax.net.ssl.KeyManager;
24 import javax.net.ssl.KeyManagerFactory;
25 import javax.net.ssl.SSLEngine;
26 import javax.net.ssl.SSLException;
27 import javax.net.ssl.TrustManager;
28 import javax.net.ssl.TrustManagerFactory;
29 import java.io.File;
30 import java.io.InputStream;
31 import java.security.KeyStore;
32 import java.security.PrivateKey;
33 import java.security.Provider;
34 import java.security.cert.X509Certificate;
35 import java.util.ArrayList;
36 import java.util.HashMap;
37 import java.util.List;
38 import java.util.Map;
39
40 import static io.netty.util.internal.EmptyArrays.EMPTY_STRINGS;
41 import static io.netty.util.internal.EmptyArrays.EMPTY_X509_CERTIFICATES;
42 import static io.netty.util.internal.ObjectUtil.checkNotNull;
43 import static io.netty.util.internal.ObjectUtil.checkNotNullWithIAE;
44 import static io.netty.util.internal.ObjectUtil.checkNonEmpty;
45
46 /**
47 * Builder for configuring a new SslContext for creation.
48 */
49 public final class SslContextBuilder {
50 @SuppressWarnings("rawtypes")
51 private static final Map.Entry[] EMPTY_ENTRIES = new Map.Entry[0];
52
53 /**
54 * Creates a builder for new client-side {@link SslContext}.
55 */
56 public static SslContextBuilder forClient() {
57 return new SslContextBuilder(false);
58 }
59
60 /**
61 * Creates a builder for new server-side {@link SslContext}.
62 *
63 * @param keyCertChainFile an X.509 certificate chain file in PEM format
64 * @param keyFile a PKCS#8 private key file in PEM format
65 * @see #keyManager(File, File)
66 */
67 public static SslContextBuilder forServer(File keyCertChainFile, File keyFile) {
68 return new SslContextBuilder(true).keyManager(keyCertChainFile, keyFile);
69 }
70
71 /**
72 * Creates a builder for new server-side {@link SslContext}.
73 *
74 * @param keyCertChainInputStream an input stream for an X.509 certificate chain in PEM format. The caller is
75 * responsible for calling {@link InputStream#close()} after {@link #build()}
76 * has been called.
77 * @param keyInputStream an input stream for a PKCS#8 private key in PEM format. The caller is
78 * responsible for calling {@link InputStream#close()} after {@link #build()}
79 * has been called.
80 *
81 * @see #keyManager(InputStream, InputStream)
82 */
83 public static SslContextBuilder forServer(InputStream keyCertChainInputStream, InputStream keyInputStream) {
84 return new SslContextBuilder(true).keyManager(keyCertChainInputStream, keyInputStream);
85 }
86
87 /**
88 * Creates a builder for new server-side {@link SslContext}.
89 *
90 * @param key a PKCS#8 private key
91 * @param keyCertChain the X.509 certificate chain
92 * @see #keyManager(PrivateKey, X509Certificate[])
93 */
94 public static SslContextBuilder forServer(PrivateKey key, X509Certificate... keyCertChain) {
95 return new SslContextBuilder(true).keyManager(key, keyCertChain);
96 }
97
98 /**
99 * Creates a builder for new server-side {@link SslContext}.
100 *
101 * @param key a PKCS#8 private key
102 * @param keyCertChain the X.509 certificate chain
103 * @see #keyManager(PrivateKey, X509Certificate[])
104 */
105 public static SslContextBuilder forServer(PrivateKey key, Iterable<? extends X509Certificate> keyCertChain) {
106 return forServer(key, toArray(keyCertChain, EMPTY_X509_CERTIFICATES));
107 }
108
109 /**
110 * Creates a builder for new server-side {@link SslContext}.
111 *
112 * @param keyCertChainFile an X.509 certificate chain file in PEM format
113 * @param keyFile a PKCS#8 private key file in PEM format
114 * @param keyPassword the password of the {@code keyFile}, or {@code null} if it's not
115 * password-protected
116 * @see #keyManager(File, File, String)
117 */
118 public static SslContextBuilder forServer(
119 File keyCertChainFile, File keyFile, String keyPassword) {
120 return new SslContextBuilder(true).keyManager(keyCertChainFile, keyFile, keyPassword);
121 }
122
123 /**
124 * Creates a builder for new server-side {@link SslContext}.
125 *
126 * @param keyCertChainInputStream an input stream for an X.509 certificate chain in PEM format. The caller is
127 * responsible for calling {@link InputStream#close()} after {@link #build()}
128 * has been called.
129 * @param keyInputStream an input stream for a PKCS#8 private key in PEM format. The caller is
130 * responsible for calling {@link InputStream#close()} after {@link #build()}
131 * has been called.
132 * @param keyPassword the password of the {@code keyFile}, or {@code null} if it's not
133 * password-protected
134 * @see #keyManager(InputStream, InputStream, String)
135 */
136 public static SslContextBuilder forServer(
137 InputStream keyCertChainInputStream, InputStream keyInputStream, String keyPassword) {
138 return new SslContextBuilder(true).keyManager(keyCertChainInputStream, keyInputStream, keyPassword);
139 }
140
141 /**
142 * Creates a builder for new server-side {@link SslContext}.
143 *
144 * @param key a PKCS#8 private key
145 * @param keyCertChain the X.509 certificate chain
146 * @param keyPassword the password of the {@code keyFile}, or {@code null} if it's not
147 * password-protected
148 * @see #keyManager(File, File, String)
149 */
150 public static SslContextBuilder forServer(
151 PrivateKey key, String keyPassword, X509Certificate... keyCertChain) {
152 return new SslContextBuilder(true).keyManager(key, keyPassword, keyCertChain);
153 }
154
155 /**
156 * Creates a builder for new server-side {@link SslContext}.
157 *
158 * @param key a PKCS#8 private key
159 * @param keyCertChain the X.509 certificate chain
160 * @param keyPassword the password of the {@code keyFile}, or {@code null} if it's not
161 * password-protected
162 * @see #keyManager(File, File, String)
163 */
164 public static SslContextBuilder forServer(
165 PrivateKey key, String keyPassword, Iterable<? extends X509Certificate> keyCertChain) {
166 return forServer(key, keyPassword, toArray(keyCertChain, EMPTY_X509_CERTIFICATES));
167 }
168
169 /**
170 * Creates a builder for new server-side {@link SslContext}.
171 *
172 * If you use {@link SslProvider#OPENSSL} or {@link SslProvider#OPENSSL_REFCNT} consider using
173 * {@link OpenSslX509KeyManagerFactory} or {@link OpenSslCachingX509KeyManagerFactory}.
174 *
175 * @param keyManagerFactory non-{@code null} factory for server's private key
176 * @see #keyManager(KeyManagerFactory)
177 */
178 public static SslContextBuilder forServer(KeyManagerFactory keyManagerFactory) {
179 return new SslContextBuilder(true).keyManager(keyManagerFactory);
180 }
181
182 /**
183 * Creates a builder for new server-side {@link SslContext} with {@link KeyManager}.
184 *
185 * @param keyManager non-{@code null} KeyManager for server's private key
186 */
187 public static SslContextBuilder forServer(KeyManager keyManager) {
188 return new SslContextBuilder(true).keyManager(keyManager);
189 }
190
191 private final boolean forServer;
192 private SslProvider provider;
193 private Provider sslContextProvider;
194 private X509Certificate[] trustCertCollection;
195 private TrustManagerFactory trustManagerFactory;
196 private X509Certificate[] keyCertChain;
197 private PrivateKey key;
198 private String keyPassword;
199 private KeyManagerFactory keyManagerFactory;
200 private Iterable<String> ciphers;
201 private CipherSuiteFilter cipherFilter = IdentityCipherSuiteFilter.INSTANCE;
202 private ApplicationProtocolConfig apn;
203 private long sessionCacheSize;
204 private long sessionTimeout;
205 private ClientAuth clientAuth = ClientAuth.NONE;
206 private String[] protocols;
207 private boolean startTls;
208 private boolean enableOcsp;
209 private String keyStoreType = KeyStore.getDefaultType();
210 private final Map<SslContextOption<?>, Object> options = new HashMap<SslContextOption<?>, Object>();
211
212 private SslContextBuilder(boolean forServer) {
213 this.forServer = forServer;
214 }
215
216 /**
217 * Configure a {@link SslContextOption}.
218 */
219 public <T> SslContextBuilder option(SslContextOption<T> option, T value) {
220 if (value == null) {
221 options.remove(option);
222 } else {
223 options.put(option, value);
224 }
225 return this;
226 }
227
228 /**
229 * The {@link SslContext} implementation to use. {@code null} uses the default one.
230 */
231 public SslContextBuilder sslProvider(SslProvider provider) {
232 this.provider = provider;
233 return this;
234 }
235
236 /**
237 * Sets the {@link KeyStore} type that should be used. {@code null} uses the default one.
238 */
239 public SslContextBuilder keyStoreType(String keyStoreType) {
240 this.keyStoreType = keyStoreType;
241 return this;
242 }
243
244 /**
245 * The SSLContext {@link Provider} to use. {@code null} uses the default one. This is only
246 * used with {@link SslProvider#JDK}.
247 */
248 public SslContextBuilder sslContextProvider(Provider sslContextProvider) {
249 this.sslContextProvider = sslContextProvider;
250 return this;
251 }
252
253 /**
254 * Trusted certificates for verifying the remote endpoint's certificate. The file should
255 * contain an X.509 certificate collection in PEM format. {@code null} uses the system default.
256 */
257 public SslContextBuilder trustManager(File trustCertCollectionFile) {
258 try {
259 return trustManager(SslContext.toX509Certificates(trustCertCollectionFile));
260 } catch (Exception e) {
261 throw new IllegalArgumentException("File does not contain valid certificates: "
262 + trustCertCollectionFile, e);
263 }
264 }
265
266 /**
267 * Trusted certificates for verifying the remote endpoint's certificate. The input stream should
268 * contain an X.509 certificate collection in PEM format. {@code null} uses the system default.
269 *
270 * The caller is responsible for calling {@link InputStream#close()} after {@link #build()} has been called.
271 */
272 public SslContextBuilder trustManager(InputStream trustCertCollectionInputStream) {
273 try {
274 return trustManager(SslContext.toX509Certificates(trustCertCollectionInputStream));
275 } catch (Exception e) {
276 throw new IllegalArgumentException("Input stream does not contain valid certificates.", e);
277 }
278 }
279
280 /**
281 * Trusted certificates for verifying the remote endpoint's certificate, {@code null} uses the system default.
282 */
283 public SslContextBuilder trustManager(X509Certificate... trustCertCollection) {
284 this.trustCertCollection = trustCertCollection != null ? trustCertCollection.clone() : null;
285 trustManagerFactory = null;
286 return this;
287 }
288
289 /**
290 * Trusted certificates for verifying the remote endpoint's certificate, {@code null} uses the system default.
291 */
292 public SslContextBuilder trustManager(Iterable<? extends X509Certificate> trustCertCollection) {
293 return trustManager(toArray(trustCertCollection, EMPTY_X509_CERTIFICATES));
294 }
295
296 /**
297 * Trusted manager for verifying the remote endpoint's certificate. {@code null} uses the system default.
298 */
299 public SslContextBuilder trustManager(TrustManagerFactory trustManagerFactory) {
300 trustCertCollection = null;
301 this.trustManagerFactory = trustManagerFactory;
302 return this;
303 }
304
305 /**
306 * A single trusted manager for verifying the remote endpoint's certificate.
307 * This is helpful when custom implementation of {@link TrustManager} is needed.
308 * Internally, a simple wrapper of {@link TrustManagerFactory} that only produces this
309 * specified {@link TrustManager} will be created, thus all the requirements specified in
310 * {@link #trustManager(TrustManagerFactory trustManagerFactory)} also apply here.
311 */
312 public SslContextBuilder trustManager(TrustManager trustManager) {
313 this.trustManagerFactory = new TrustManagerFactoryWrapper(trustManager);
314 trustCertCollection = null;
315 return this;
316 }
317
318 /**
319 * Identifying certificate for this host. {@code keyCertChainFile} and {@code keyFile} may
320 * be {@code null} for client contexts, which disables mutual authentication.
321 *
322 * @param keyCertChainFile an X.509 certificate chain file in PEM format
323 * @param keyFile a PKCS#8 private key file in PEM format
324 */
325 public SslContextBuilder keyManager(File keyCertChainFile, File keyFile) {
326 return keyManager(keyCertChainFile, keyFile, null);
327 }
328
329 /**
330 * Identifying certificate for this host. {@code keyCertChainInputStream} and {@code keyInputStream} may
331 * be {@code null} for client contexts, which disables mutual authentication.
332 *
333 * @param keyCertChainInputStream an input stream for an X.509 certificate chain in PEM format. The caller is
334 * responsible for calling {@link InputStream#close()} after {@link #build()}
335 * has been called.
336 * @param keyInputStream an input stream for a PKCS#8 private key in PEM format. The caller is
337 * responsible for calling {@link InputStream#close()} after {@link #build()}
338 * has been called.
339 */
340 public SslContextBuilder keyManager(InputStream keyCertChainInputStream, InputStream keyInputStream) {
341 return keyManager(keyCertChainInputStream, keyInputStream, null);
342 }
343
344 /**
345 * Identifying certificate for this host. {@code keyCertChain} and {@code key} may
346 * be {@code null} for client contexts, which disables mutual authentication.
347 *
348 * @param key a PKCS#8 private key
349 * @param keyCertChain an X.509 certificate chain
350 */
351 public SslContextBuilder keyManager(PrivateKey key, X509Certificate... keyCertChain) {
352 return keyManager(key, null, keyCertChain);
353 }
354
355 /**
356 * Identifying certificate for this host. {@code keyCertChain} and {@code key} may
357 * be {@code null} for client contexts, which disables mutual authentication.
358 *
359 * @param key a PKCS#8 private key
360 * @param keyCertChain an X.509 certificate chain
361 */
362 public SslContextBuilder keyManager(PrivateKey key, Iterable<? extends X509Certificate> keyCertChain) {
363 return keyManager(key, toArray(keyCertChain, EMPTY_X509_CERTIFICATES));
364 }
365
366 /**
367 * Identifying certificate for this host. {@code keyCertChainFile} and {@code keyFile} may
368 * be {@code null} for client contexts, which disables mutual authentication.
369 *
370 * @param keyCertChainFile an X.509 certificate chain file in PEM format
371 * @param keyFile a PKCS#8 private key file in PEM format
372 * @param keyPassword the password of the {@code keyFile}, or {@code null} if it's not
373 * password-protected
374 */
375 public SslContextBuilder keyManager(File keyCertChainFile, File keyFile, String keyPassword) {
376 X509Certificate[] keyCertChain;
377 PrivateKey key;
378 try {
379 keyCertChain = SslContext.toX509Certificates(keyCertChainFile);
380 } catch (Exception e) {
381 throw new IllegalArgumentException("File does not contain valid certificates: " + keyCertChainFile, e);
382 }
383 try {
384 key = SslContext.toPrivateKey(keyFile, keyPassword);
385 } catch (Exception e) {
386 throw new IllegalArgumentException("File does not contain valid private key: " + keyFile, e);
387 }
388 return keyManager(key, keyPassword, keyCertChain);
389 }
390
391 /**
392 * Identifying certificate for this host. {@code keyCertChainInputStream} and {@code keyInputStream} may
393 * be {@code null} for client contexts, which disables mutual authentication.
394 *
395 * @param keyCertChainInputStream an input stream for an X.509 certificate chain in PEM format. The caller is
396 * responsible for calling {@link InputStream#close()} after {@link #build()}
397 * has been called.
398 * @param keyInputStream an input stream for a PKCS#8 private key in PEM format. The caller is
399 * responsible for calling {@link InputStream#close()} after {@link #build()}
400 * has been called.
401 * @param keyPassword the password of the {@code keyInputStream}, or {@code null} if it's not
402 * password-protected
403 */
404 public SslContextBuilder keyManager(InputStream keyCertChainInputStream, InputStream keyInputStream,
405 String keyPassword) {
406 X509Certificate[] keyCertChain;
407 PrivateKey key;
408 try {
409 keyCertChain = SslContext.toX509Certificates(keyCertChainInputStream);
410 } catch (Exception e) {
411 throw new IllegalArgumentException("Input stream not contain valid certificates.", e);
412 }
413 try {
414 key = SslContext.toPrivateKey(keyInputStream, keyPassword);
415 } catch (Exception e) {
416 throw new IllegalArgumentException("Input stream does not contain valid private key.", e);
417 }
418 return keyManager(key, keyPassword, keyCertChain);
419 }
420
421 /**
422 * Identifying certificate for this host. {@code keyCertChain} and {@code key} may
423 * be {@code null} for client contexts, which disables mutual authentication.
424 *
425 * @param key a PKCS#8 private key file
426 * @param keyPassword the password of the {@code key}, or {@code null} if it's not
427 * password-protected
428 * @param keyCertChain an X.509 certificate chain
429 */
430 public SslContextBuilder keyManager(PrivateKey key, String keyPassword, X509Certificate... keyCertChain) {
431 if (forServer) {
432 checkNonEmpty(keyCertChain, "keyCertChain"); // lgtm[java/dereferenced-value-may-be-null]
433 checkNotNull(key, "key required for servers");
434 }
435 if (keyCertChain == null || keyCertChain.length == 0) {
436 this.keyCertChain = null;
437 } else {
438 for (X509Certificate cert: keyCertChain) {
439 checkNotNullWithIAE(cert, "cert");
440 }
441 this.keyCertChain = keyCertChain.clone();
442 }
443 this.key = key;
444 this.keyPassword = keyPassword;
445 keyManagerFactory = null;
446 return this;
447 }
448
449 /**
450 * Identifying certificate for this host. {@code keyCertChain} and {@code key} may
451 * be {@code null} for client contexts, which disables mutual authentication.
452 *
453 * @param key a PKCS#8 private key file
454 * @param keyPassword the password of the {@code key}, or {@code null} if it's not
455 * password-protected
456 * @param keyCertChain an X.509 certificate chain
457 */
458 public SslContextBuilder keyManager(PrivateKey key, String keyPassword,
459 Iterable<? extends X509Certificate> keyCertChain) {
460 return keyManager(key, keyPassword, toArray(keyCertChain, EMPTY_X509_CERTIFICATES));
461 }
462
463 /**
464 * Identifying manager for this host. {@code keyManagerFactory} may be {@code null} for
465 * client contexts, which disables mutual authentication. Using a {@link KeyManagerFactory}
466 * is only supported for {@link SslProvider#JDK} or {@link SslProvider#OPENSSL} / {@link SslProvider#OPENSSL_REFCNT}
467 * if the used openssl version is 1.0.1+. You can check if your openssl version supports using a
468 * {@link KeyManagerFactory} by calling {@link OpenSsl#supportsKeyManagerFactory()}. If this is not the case
469 * you must use {@link #keyManager(File, File)} or {@link #keyManager(File, File, String)}.
470 *
471 * If you use {@link SslProvider#OPENSSL} or {@link SslProvider#OPENSSL_REFCNT} consider using
472 * {@link OpenSslX509KeyManagerFactory} or {@link OpenSslCachingX509KeyManagerFactory}.
473 */
474 public SslContextBuilder keyManager(KeyManagerFactory keyManagerFactory) {
475 if (forServer) {
476 checkNotNull(keyManagerFactory, "keyManagerFactory required for servers");
477 }
478 keyCertChain = null;
479 key = null;
480 keyPassword = null;
481 this.keyManagerFactory = keyManagerFactory;
482 return this;
483 }
484
485 /**
486 * A single key manager managing the identity information of this host.
487 * This is helpful when custom implementation of {@link KeyManager} is needed.
488 * Internally, a wrapper of {@link KeyManagerFactory} that only produces this specified
489 * {@link KeyManager} will be created, thus all the requirements specified in
490 * {@link #keyManager(KeyManagerFactory keyManagerFactory)} also apply here.
491 */
492 public SslContextBuilder keyManager(KeyManager keyManager) {
493 if (forServer) {
494 checkNotNull(keyManager, "keyManager required for servers");
495 }
496 if (keyManager != null) {
497 this.keyManagerFactory = new KeyManagerFactoryWrapper(keyManager);
498 } else {
499 this.keyManagerFactory = null;
500 }
501 keyCertChain = null;
502 key = null;
503 keyPassword = null;
504 return this;
505 }
506
507 /**
508 * The cipher suites to enable, in the order of preference. {@code null} to use default
509 * cipher suites.
510 */
511 public SslContextBuilder ciphers(Iterable<String> ciphers) {
512 return ciphers(ciphers, IdentityCipherSuiteFilter.INSTANCE);
513 }
514
515 /**
516 * The cipher suites to enable, in the order of preference. {@code cipherFilter} will be
517 * applied to the ciphers before use. If {@code ciphers} is {@code null}, then the default
518 * cipher suites will be used.
519 */
520 public SslContextBuilder ciphers(Iterable<String> ciphers, CipherSuiteFilter cipherFilter) {
521 this.cipherFilter = checkNotNull(cipherFilter, "cipherFilter");
522 this.ciphers = ciphers;
523 return this;
524 }
525
526 /**
527 * Application protocol negotiation configuration. {@code null} disables support.
528 */
529 public SslContextBuilder applicationProtocolConfig(ApplicationProtocolConfig apn) {
530 this.apn = apn;
531 return this;
532 }
533
534 /**
535 * Set the size of the cache used for storing SSL session objects. {@code 0} to use the
536 * default value.
537 */
538 public SslContextBuilder sessionCacheSize(long sessionCacheSize) {
539 this.sessionCacheSize = sessionCacheSize;
540 return this;
541 }
542
543 /**
544 * Set the timeout for the cached SSL session objects, in seconds. {@code 0} to use the
545 * default value.
546 */
547 public SslContextBuilder sessionTimeout(long sessionTimeout) {
548 this.sessionTimeout = sessionTimeout;
549 return this;
550 }
551
552 /**
553 * Sets the client authentication mode.
554 */
555 public SslContextBuilder clientAuth(ClientAuth clientAuth) {
556 this.clientAuth = checkNotNull(clientAuth, "clientAuth");
557 return this;
558 }
559
560 /**
561 * The TLS protocol versions to enable.
562 * @param protocols The protocols to enable, or {@code null} to enable the default protocols.
563 * @see SSLEngine#setEnabledCipherSuites(String[])
564 */
565 public SslContextBuilder protocols(String... protocols) {
566 this.protocols = protocols == null ? null : protocols.clone();
567 return this;
568 }
569
570 /**
571 * The TLS protocol versions to enable.
572 * @param protocols The protocols to enable, or {@code null} to enable the default protocols.
573 * @see SSLEngine#setEnabledCipherSuites(String[])
574 */
575 public SslContextBuilder protocols(Iterable<String> protocols) {
576 return protocols(toArray(protocols, EMPTY_STRINGS));
577 }
578
579 /**
580 * {@code true} if the first write request shouldn't be encrypted.
581 */
582 public SslContextBuilder startTls(boolean startTls) {
583 this.startTls = startTls;
584 return this;
585 }
586
587 /**
588 * Enables OCSP stapling. Please note that not all {@link SslProvider} implementations support OCSP
589 * stapling and an exception will be thrown upon {@link #build()}.
590 *
591 * @see OpenSsl#isOcspSupported()
592 */
593 @UnstableApi
594 public SslContextBuilder enableOcsp(boolean enableOcsp) {
595 this.enableOcsp = enableOcsp;
596 return this;
597 }
598
599 /**
600 * Create new {@code SslContext} instance with configured settings.
601 * <p>If {@link #sslProvider(SslProvider)} is set to {@link SslProvider#OPENSSL_REFCNT} then the caller is
602 * responsible for releasing this object, or else native memory may leak.
603 */
604 public SslContext build() throws SSLException {
605 if (forServer) {
606 return SslContext.newServerContextInternal(provider, sslContextProvider, trustCertCollection,
607 trustManagerFactory, keyCertChain, key, keyPassword, keyManagerFactory,
608 ciphers, cipherFilter, apn, sessionCacheSize, sessionTimeout, clientAuth, protocols, startTls,
609 enableOcsp, keyStoreType, toArray(options.entrySet(), EMPTY_ENTRIES));
610 } else {
611 return SslContext.newClientContextInternal(provider, sslContextProvider, trustCertCollection,
612 trustManagerFactory, keyCertChain, key, keyPassword, keyManagerFactory,
613 ciphers, cipherFilter, apn, protocols, sessionCacheSize, sessionTimeout, enableOcsp, keyStoreType,
614 toArray(options.entrySet(), EMPTY_ENTRIES));
615 }
616 }
617
618 private static <T> T[] toArray(Iterable<? extends T> iterable, T[] prototype) {
619 if (iterable == null) {
620 return null;
621 }
622 final List<T> list = new ArrayList<T>();
623 for (T element : iterable) {
624 list.add(element);
625 }
626 return list.toArray(prototype);
627 }
628 }