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| 1 | /* | ||
| 2 | * Copyright (c) 1996, 2011, 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 | |||
| 27 | package sun.security.ssl; | ||
| 28 | |||
| 29 | import java.io.*; | ||
| 30 | import java.net.*; | ||
| 31 | import java.util.Enumeration; | ||
| 32 | import java.util.Hashtable; | ||
| 33 | import java.util.Vector; | ||
| 34 | import java.util.Arrays; | ||
| 35 | import java.util.Collection; | ||
| 36 | |||
| 37 | import java.security.Principal; | ||
| 38 | import java.security.PrivateKey; | ||
| 39 | import java.security.SecureRandom; | ||
| 40 | import java.security.cert.X509Certificate; | ||
| 41 | import java.security.cert.CertificateEncodingException; | ||
| 42 | |||
| 43 | import javax.crypto.SecretKey; | ||
| 44 | |||
| 45 | import javax.net.ssl.SSLSession; | ||
| 46 | import javax.net.ssl.SSLSessionContext; | ||
| 47 | import javax.net.ssl.SSLSessionBindingListener; | ||
| 48 | import javax.net.ssl.SSLSessionBindingEvent; | ||
| 49 | import javax.net.ssl.SSLPeerUnverifiedException; | ||
| 50 | import javax.net.ssl.SSLSession; | ||
| 51 | import javax.net.ssl.SSLPermission; | ||
| 52 | import javax.net.ssl.SSLException; | ||
| 53 | import javax.net.ssl.ExtendedSSLSession; | ||
| 54 | |||
| 55 | import javax.security.auth.x500.X500Principal; | ||
| 56 | |||
| 57 | import static sun.security.ssl.CipherSuite.*; | ||
| 58 | import static sun.security.ssl.CipherSuite.KeyExchange.*; | ||
| 59 | |||
| 60 | /** | ||
| 61 | * Implements the SSL session interface, and exposes the session context | ||
| 62 | * which is maintained by SSL servers. | ||
| 63 | * | ||
| 64 | * <P> Servers have the ability to manage the sessions associated with | ||
| 65 | * their authentication context(s). They can do this by enumerating the | ||
| 66 | * IDs of the sessions which are cached, examining those sessions, and then | ||
| 67 | * perhaps invalidating a given session so that it can't be used again. | ||
| 68 | * If servers do not explicitly manage the cache, sessions will linger | ||
| 69 | * until memory is low enough that the runtime environment purges cache | ||
| 70 | * entries automatically to reclaim space. | ||
| 71 | * | ||
| 72 | * <P><em> The only reason this class is not package-private is that | ||
| 73 | * there's no other public way to get at the server session context which | ||
| 74 | * is associated with any given authentication context. </em> | ||
| 75 | * | ||
| 76 | * @author David Brownell | ||
| 77 | */ | ||
| 78 | final class SSLSessionImpl extends ExtendedSSLSession { | ||
| 79 | |||
| 80 | /* | ||
| 81 | * we only really need a single null session | ||
| 82 | */ | ||
| 83 | static final SSLSessionImpl nullSession = new SSLSessionImpl(); | ||
| 84 | |||
| 85 | // compression methods | ||
| 86 | private static final byte compression_null = 0; | ||
| 87 | |||
| 88 | /* | ||
| 89 | * The state of a single session, as described in section 7.1 | ||
| 90 | * of the SSLv3 spec. | ||
| 91 | */ | ||
| 92 | private final ProtocolVersion protocolVersion; | ||
| 93 | private final SessionId sessionId; | ||
| 94 | private X509Certificate[] peerCerts; | ||
| 95 | private byte compressionMethod; | ||
| 96 | private CipherSuite cipherSuite; | ||
| 97 | private SecretKey masterSecret; | ||
| 98 | |||
| 99 | /* | ||
| 100 | * Information not part of the SSLv3 protocol spec, but used | ||
| 101 | * to support session management policies. | ||
| 102 | */ | ||
| 103 | private final long creationTime = System.currentTimeMillis(); | ||
| 104 | private long lastUsedTime = 0; | ||
| 105 | private final String host; | ||
| 106 | private final int port; | ||
| 107 | private SSLSessionContextImpl context; | ||
| 108 | private int sessionCount; | ||
| 109 | private boolean invalidated; | ||
| 110 | private X509Certificate[] localCerts; | ||
| 111 | private PrivateKey localPrivateKey; | ||
| 112 | private String[] localSupportedSignAlgs; | ||
| 113 | private String[] peerSupportedSignAlgs; | ||
| 114 | |||
| 115 | // Principals for non-certificate based cipher suites | ||
| 116 | private Principal peerPrincipal; | ||
| 117 | private Principal localPrincipal; | ||
| 118 | |||
| 119 | /* | ||
| 120 | * We count session creations, eventually for statistical data but | ||
| 121 | * also since counters make shorter debugging IDs than the big ones | ||
| 122 | * we use in the protocol for uniqueness-over-time. | ||
| 123 | */ | ||
| 124 | private static volatile int counter = 0; | ||
| 125 | |||
| 126 | /* | ||
| 127 | * Use of session caches is globally enabled/disabled. | ||
| 128 | */ | ||
| 129 | private static boolean defaultRejoinable = true; | ||
| 130 | |||
| 131 | /* Class and subclass dynamic debugging support */ | ||
| 132 | private static final Debug debug = Debug.getInstance("ssl"); | ||
| 133 | |||
| 134 | /* | ||
| 135 | * Create a new non-rejoinable session, using the default (null) | ||
| 136 | * cipher spec. This constructor returns a session which could | ||
| 137 | * be used either by a client or by a server, as a connection is | ||
| 138 | * first opened and before handshaking begins. | ||
| 139 | */ | ||
| 140 | private SSLSessionImpl() { | ||
| 141 | this(ProtocolVersion.NONE, CipherSuite.C_NULL, null, | ||
| 142 | new SessionId(false, null), null, -1); | ||
| 143 | } | ||
| 144 | |||
| 145 | /* | ||
| 146 | * Create a new session, using a given cipher spec. This will | ||
| 147 | * be rejoinable if session caching is enabled; the constructor | ||
| 148 | * is intended mostly for use by serves. | ||
| 149 | */ | ||
| 150 | SSLSessionImpl(ProtocolVersion protocolVersion, CipherSuite cipherSuite, | ||
| 151 | Collection<SignatureAndHashAlgorithm> algorithms, | ||
| 152 | SecureRandom generator, String host, int port) { | ||
| 153 | this(protocolVersion, cipherSuite, algorithms, | ||
| 154 | new SessionId(defaultRejoinable, generator), host, port); | ||
| 155 | } | ||
| 156 | |||
| 157 | /* | ||
| 158 | * Record a new session, using a given cipher spec and session ID. | ||
| 159 | */ | ||
| 160 | SSLSessionImpl(ProtocolVersion protocolVersion, CipherSuite cipherSuite, | ||
| 161 | Collection<SignatureAndHashAlgorithm> algorithms, | ||
| 162 | SessionId id, String host, int port) { | ||
| 163 | this.protocolVersion = protocolVersion; | ||
| 164 | sessionId = id; | ||
| 165 | peerCerts = null; | ||
| 166 | compressionMethod = compression_null; | ||
| 167 | this.cipherSuite = cipherSuite; | ||
| 168 | masterSecret = null; | ||
| 169 | this.host = host; | ||
| 170 | this.port = port; | ||
| 171 | sessionCount = ++counter; | ||
| 172 | localSupportedSignAlgs = | ||
| 173 | SignatureAndHashAlgorithm.getAlgorithmNames(algorithms); | ||
| 174 | |||
| 175 | if (debug != null && Debug.isOn("session")) { | ||
| 176 | System.out.println("%% Initialized: " + this); | ||
| 177 | } | ||
| 178 | } | ||
| 179 | |||
| 180 | void setMasterSecret(SecretKey secret) { | ||
| 181 | if (masterSecret == null) { | ||
| 182 | masterSecret = secret; | ||
| 183 | } else { | ||
| 184 | throw new RuntimeException("setMasterSecret() error"); | ||
| 185 | } | ||
| 186 | } | ||
| 187 | |||
| 188 | /** | ||
| 189 | * Returns the master secret ... treat with extreme caution! | ||
| 190 | */ | ||
| 191 | SecretKey getMasterSecret() { | ||
| 192 | return masterSecret; | ||
| 193 | } | ||
| 194 | |||
| 195 | void setPeerCertificates(X509Certificate[] peer) { | ||
| 196 | if (peerCerts == null) { | ||
| 197 | peerCerts = peer; | ||
| 198 | } | ||
| 199 | } | ||
| 200 | |||
| 201 | void setLocalCertificates(X509Certificate[] local) { | ||
| 202 | localCerts = local; | ||
| 203 | } | ||
| 204 | |||
| 205 | void setLocalPrivateKey(PrivateKey privateKey) { | ||
| 206 | localPrivateKey = privateKey; | ||
| 207 | } | ||
| 208 | |||
| 209 | void setPeerSupportedSignatureAlgorithms( | ||
| 210 | Collection<SignatureAndHashAlgorithm> algorithms) { | ||
| 211 | peerSupportedSignAlgs = | ||
| 212 | SignatureAndHashAlgorithm.getAlgorithmNames(algorithms); | ||
| 213 | } | ||
| 214 | |||
| 215 | /** | ||
| 216 | * Set the peer principal. | ||
| 217 | */ | ||
| 218 | void setPeerPrincipal(Principal principal) { | ||
| 219 | if (peerPrincipal == null) { | ||
| 220 | peerPrincipal = principal; | ||
| 221 | } | ||
| 222 | } | ||
| 223 | |||
| 224 | /** | ||
| 225 | * Set the local principal. | ||
| 226 | */ | ||
| 227 | void setLocalPrincipal(Principal principal) { | ||
| 228 | localPrincipal = principal; | ||
| 229 | } | ||
| 230 | |||
| 231 | /** | ||
| 232 | * Returns true iff this session may be resumed ... sessions are | ||
| 233 | * usually resumable. Security policies may suggest otherwise, | ||
| 234 | * for example sessions that haven't been used for a while (say, | ||
| 235 | * a working day) won't be resumable, and sessions might have a | ||
| 236 | * maximum lifetime in any case. | ||
| 237 | */ | ||
| 238 | boolean isRejoinable() { | ||
| 239 | return sessionId != null && sessionId.length() != 0 && | ||
| 240 | !invalidated && isLocalAuthenticationValid(); | ||
| 241 | } | ||
| 242 | |||
| 243 | public synchronized boolean isValid() { | ||
| 244 | return isRejoinable(); | ||
| 245 | } | ||
| 246 | |||
| 247 | /** | ||
| 248 | * Check if the authentication used when establishing this session | ||
| 249 | * is still valid. Returns true if no authentication was used | ||
| 250 | */ | ||
| 251 | boolean isLocalAuthenticationValid() { | ||
| 252 | if (localPrivateKey != null) { | ||
| 253 | try { | ||
| 254 | // if the private key is no longer valid, getAlgorithm() | ||
| 255 | // should throw an exception | ||
| 256 | // (e.g. Smartcard has been removed from the reader) | ||
| 257 | localPrivateKey.getAlgorithm(); | ||
| 258 | } catch (Exception e) { | ||
| 259 | invalidate(); | ||
| 260 | return false; | ||
| 261 | } | ||
| 262 | } | ||
| 263 | return true; | ||
| 264 | } | ||
| 265 | |||
| 266 | /** | ||
| 267 | * Returns the ID for this session. The ID is fixed for the | ||
| 268 | * duration of the session; neither it, nor its value, changes. | ||
| 269 | */ | ||
| 270 | public byte[] getId() { | ||
| 271 | return sessionId.getId(); | ||
| 272 | } | ||
| 273 | |||
| 274 | /** | ||
| 275 | * For server sessions, this returns the set of sessions which | ||
| 276 | * are currently valid in this process. For client sessions, | ||
| 277 | * this returns null. | ||
| 278 | */ | ||
| 279 | public SSLSessionContext getSessionContext() { | ||
| 280 | /* | ||
| 281 | * An interim security policy until we can do something | ||
| 282 | * more specific in 1.2. Only allow trusted code (code which | ||
| 283 | * can set system properties) to get an | ||
| 284 | * SSLSessionContext. This is to limit the ability of code to | ||
| 285 | * look up specific sessions or enumerate over them. Otherwise, | ||
| 286 | * code can only get session objects from successful SSL | ||
| 287 | * connections which implies that they must have had permission | ||
| 288 | * to make the network connection in the first place. | ||
| 289 | */ | ||
| 290 | SecurityManager sm; | ||
| 291 | if ((sm = System.getSecurityManager()) != null) { | ||
| 292 | sm.checkPermission(new SSLPermission("getSSLSessionContext")); | ||
| 293 | } | ||
| 294 | |||
| 295 | return context; | ||
| 296 | } | ||
| 297 | |||
| 298 | |||
| 299 | SessionId getSessionId() { | ||
| 300 | return sessionId; | ||
| 301 | } | ||
| 302 | |||
| 303 | |||
| 304 | /** | ||
| 305 | * Returns the cipher spec in use on this session | ||
| 306 | */ | ||
| 307 | CipherSuite getSuite() { | ||
| 308 | return cipherSuite; | ||
| 309 | } | ||
| 310 | |||
| 311 | /** | ||
| 312 | * Resets the cipher spec in use on this session | ||
| 313 | */ | ||
| 314 | void setSuite(CipherSuite suite) { | ||
| 315 | cipherSuite = suite; | ||
| 316 | |||
| 317 | if (debug != null && Debug.isOn("session")) { | ||
| 318 | System.out.println("%% Negotiating: " + this); | ||
| 319 | } | ||
| 320 | } | ||
| 321 | |||
| 322 | /** | ||
| 323 | * Returns the name of the cipher suite in use on this session | ||
| 324 | */ | ||
| 325 | public String getCipherSuite() { | ||
| 326 | return getSuite().name; | ||
| 327 | } | ||
| 328 | |||
| 329 | ProtocolVersion getProtocolVersion() { | ||
| 330 | return protocolVersion; | ||
| 331 | } | ||
| 332 | |||
| 333 | /** | ||
| 334 | * Returns the standard name of the protocol in use on this session | ||
| 335 | */ | ||
| 336 | public String getProtocol() { | ||
| 337 | return getProtocolVersion().name; | ||
| 338 | } | ||
| 339 | |||
| 340 | /** | ||
| 341 | * Returns the compression technique used in this session | ||
| 342 | */ | ||
| 343 | byte getCompression() { | ||
| 344 | return compressionMethod; | ||
| 345 | } | ||
| 346 | |||
| 347 | /** | ||
| 348 | * Returns the hashcode for this session | ||
| 349 | */ | ||
| 350 | public int hashCode() { | ||
| 351 | return sessionId.hashCode(); | ||
| 352 | } | ||
| 353 | |||
| 354 | |||
| 355 | /** | ||
| 356 | * Returns true if sessions have same ids, false otherwise. | ||
| 357 | */ | ||
| 358 | public boolean equals(Object obj) { | ||
| 359 | |||
| 360 | if (obj == this) { | ||
| 361 | return true; | ||
| 362 | } | ||
| 363 | |||
| 364 | if (obj instanceof SSLSessionImpl) { | ||
| 365 | SSLSessionImpl sess = (SSLSessionImpl) obj; | ||
| 366 | return (sessionId != null) && (sessionId.equals( | ||
| 367 | sess.getSessionId())); | ||
| 368 | } | ||
| 369 | |||
| 370 | return false; | ||
| 371 | } | ||
| 372 | |||
| 373 | |||
| 374 | /** | ||
| 375 | * Return the cert chain presented by the peer in the | ||
| 376 | * java.security.cert format. | ||
| 377 | * Note: This method can be used only when using certificate-based | ||
| 378 | * cipher suites; using it with non-certificate-based cipher suites, | ||
| 379 | * such as Kerberos, will throw an SSLPeerUnverifiedException. | ||
| 380 | * | ||
| 381 | * @return array of peer X.509 certs, with the peer's own cert | ||
| 382 | * first in the chain, and with the "root" CA last. | ||
| 383 | */ | ||
| 384 | public java.security.cert.Certificate[] getPeerCertificates() | ||
| 385 | throws SSLPeerUnverifiedException { | ||
| 386 | // | ||
| 387 | // clone to preserve integrity of session ... caller can't | ||
| 388 | // change record of peer identity even by accident, much | ||
| 389 | // less do it intentionally. | ||
| 390 | // | ||
| 391 | if ((cipherSuite.keyExchange == K_KRB5) || | ||
| 392 | (cipherSuite.keyExchange == K_KRB5_EXPORT)) { | ||
| 393 | throw new SSLPeerUnverifiedException("no certificates expected" | ||
| 394 | + " for Kerberos cipher suites"); | ||
| 395 | } | ||
| 396 | if (peerCerts == null) { | ||
| 397 | throw new SSLPeerUnverifiedException("peer not authenticated"); | ||
| 398 | } | ||
| 399 | // Certs are immutable objects, therefore we don't clone them. | ||
| 400 | // But do need to clone the array, so that nothing is inserted | ||
| 401 | // into peerCerts. | ||
| 402 | return (java.security.cert.Certificate[])peerCerts.clone(); | ||
| 403 | } | ||
| 404 | |||
| 405 | /** | ||
| 406 | * Return the cert chain presented to the peer in the | ||
| 407 | * java.security.cert format. | ||
| 408 | * Note: This method is useful only when using certificate-based | ||
| 409 | * cipher suites. | ||
| 410 | * | ||
| 411 | * @return array of peer X.509 certs, with the peer's own cert | ||
| 412 | * first in the chain, and with the "root" CA last. | ||
| 413 | */ | ||
| 414 | public java.security.cert.Certificate[] getLocalCertificates() { | ||
| 415 | // | ||
| 416 | // clone to preserve integrity of session ... caller can't | ||
| 417 | // change record of peer identity even by accident, much | ||
| 418 | // less do it intentionally. | ||
| 419 | return (localCerts == null ? null : | ||
| 420 | (java.security.cert.Certificate[])localCerts.clone()); | ||
| 421 | } | ||
| 422 | |||
| 423 | /** | ||
| 424 | * Return the cert chain presented by the peer in the | ||
| 425 | * javax.security.cert format. | ||
| 426 | * Note: This method can be used only when using certificate-based | ||
| 427 | * cipher suites; using it with non-certificate-based cipher suites, | ||
| 428 | * such as Kerberos, will throw an SSLPeerUnverifiedException. | ||
| 429 | * | ||
| 430 | * @return array of peer X.509 certs, with the peer's own cert | ||
| 431 | * first in the chain, and with the "root" CA last. | ||
| 432 | */ | ||
| 433 | public javax.security.cert.X509Certificate[] getPeerCertificateChain() | ||
| 434 | throws SSLPeerUnverifiedException { | ||
| 435 | // | ||
| 436 | // clone to preserve integrity of session ... caller can't | ||
| 437 | // change record of peer identity even by accident, much | ||
| 438 | // less do it intentionally. | ||
| 439 | // | ||
| 440 | if ((cipherSuite.keyExchange == K_KRB5) || | ||
| 441 | (cipherSuite.keyExchange == K_KRB5_EXPORT)) { | ||
| 442 | throw new SSLPeerUnverifiedException("no certificates expected" | ||
| 443 | + " for Kerberos cipher suites"); | ||
| 444 | } | ||
| 445 | if (peerCerts == null) { | ||
| 446 | throw new SSLPeerUnverifiedException("peer not authenticated"); | ||
| 447 | } | ||
| 448 | javax.security.cert.X509Certificate[] certs; | ||
| 449 | certs = new javax.security.cert.X509Certificate[peerCerts.length]; | ||
| 450 | for (int i = 0; i < peerCerts.length; i++) { | ||
| 451 | byte[] der = null; | ||
| 452 | try { | ||
| 453 | der = peerCerts[i].getEncoded(); | ||
| 454 | certs[i] = javax.security.cert.X509Certificate.getInstance(der); | ||
| 455 | } catch (CertificateEncodingException e) { | ||
| 456 | throw new SSLPeerUnverifiedException(e.getMessage()); | ||
| 457 | } catch (javax.security.cert.CertificateException e) { | ||
| 458 | throw new SSLPeerUnverifiedException(e.getMessage()); | ||
| 459 | } | ||
| 460 | } | ||
| 461 | |||
| 462 | return certs; | ||
| 463 | } | ||
| 464 | |||
| 465 | /** | ||
| 466 | * Return the cert chain presented by the peer. | ||
| 467 | * Note: This method can be used only when using certificate-based | ||
| 468 | * cipher suites; using it with non-certificate-based cipher suites, | ||
| 469 | * such as Kerberos, will throw an SSLPeerUnverifiedException. | ||
| 470 | * | ||
| 471 | * @return array of peer X.509 certs, with the peer's own cert | ||
| 472 | * first in the chain, and with the "root" CA last. | ||
| 473 | */ | ||
| 474 | public X509Certificate[] getCertificateChain() | ||
| 475 | throws SSLPeerUnverifiedException { | ||
| 476 | /* | ||
| 477 | * clone to preserve integrity of session ... caller can't | ||
| 478 | * change record of peer identity even by accident, much | ||
| 479 | * less do it intentionally. | ||
| 480 | */ | ||
| 481 | if ((cipherSuite.keyExchange == K_KRB5) || | ||
| 482 | (cipherSuite.keyExchange == K_KRB5_EXPORT)) { | ||
| 483 | throw new SSLPeerUnverifiedException("no certificates expected" | ||
| 484 | + " for Kerberos cipher suites"); | ||
| 485 | } | ||
| 486 | if (peerCerts != null) { | ||
| 487 | return peerCerts.clone(); | ||
| 488 | } else { | ||
| 489 | throw new SSLPeerUnverifiedException("peer not authenticated"); | ||
| 490 | } | ||
| 491 | } | ||
| 492 | |||
| 493 | /** | ||
| 494 | * Returns the identity of the peer which was established as part of | ||
| 495 | * defining the session. | ||
| 496 | * | ||
| 497 | * @return the peer's principal. Returns an X500Principal of the | ||
| 498 | * end-entity certificate for X509-based cipher suites, and | ||
| 499 | * Principal for Kerberos cipher suites. | ||
| 500 | * | ||
| 501 | * @throws SSLPeerUnverifiedException if the peer's identity has not | ||
| 502 | * been verified | ||
| 503 | */ | ||
| 504 | public Principal getPeerPrincipal() | ||
| 505 | throws SSLPeerUnverifiedException | ||
| 506 | { | ||
| 507 | if ((cipherSuite.keyExchange == K_KRB5) || | ||
| 508 | (cipherSuite.keyExchange == K_KRB5_EXPORT)) { | ||
| 509 | if (peerPrincipal == null) { | ||
| 510 | throw new SSLPeerUnverifiedException("peer not authenticated"); | ||
| 511 | } else { | ||
| 512 | // Eliminate dependency on KerberosPrincipal | ||
| 513 | return peerPrincipal; | ||
| 514 | } | ||
| 515 | } | ||
| 516 | if (peerCerts == null) { | ||
| 517 | throw new SSLPeerUnverifiedException("peer not authenticated"); | ||
| 518 | } | ||
| 519 | return peerCerts[0].getSubjectX500Principal(); | ||
| 520 | } | ||
| 521 | |||
| 522 | /** | ||
| 523 | * Returns the principal that was sent to the peer during handshaking. | ||
| 524 | * | ||
| 525 | * @return the principal sent to the peer. Returns an X500Principal | ||
| 526 | * of the end-entity certificate for X509-based cipher suites, and | ||
| 527 | * Principal for Kerberos cipher suites. If no principal was | ||
| 528 | * sent, then null is returned. | ||
| 529 | */ | ||
| 530 | public Principal getLocalPrincipal() { | ||
| 531 | |||
| 532 | if ((cipherSuite.keyExchange == K_KRB5) || | ||
| 533 | (cipherSuite.keyExchange == K_KRB5_EXPORT)) { | ||
| 534 | // Eliminate dependency on KerberosPrincipal | ||
| 535 | return (localPrincipal == null ? null : localPrincipal); | ||
| 536 | } | ||
| 537 | return (localCerts == null ? null : | ||
| 538 | localCerts[0].getSubjectX500Principal()); | ||
| 539 | } | ||
| 540 | |||
| 541 | /** | ||
| 542 | * Returns the time this session was created. | ||
| 543 | */ | ||
| 544 | public long getCreationTime() { | ||
| 545 | return creationTime; | ||
| 546 | } | ||
| 547 | |||
| 548 | /** | ||
| 549 | * Returns the last time this session was used to initialize | ||
| 550 | * a connection. | ||
| 551 | */ | ||
| 552 | public long getLastAccessedTime() { | ||
| 553 | return (lastUsedTime != 0) ? lastUsedTime : creationTime; | ||
| 554 | } | ||
| 555 | |||
| 556 | void setLastAccessedTime(long time) { | ||
| 557 | lastUsedTime = time; | ||
| 558 | } | ||
| 559 | |||
| 560 | |||
| 561 | /** | ||
| 562 | * Returns the network address of the session's peer. This | ||
| 563 | * implementation does not insist that connections between | ||
| 564 | * different ports on the same host must necessarily belong | ||
| 565 | * to different sessions, though that is of course allowed. | ||
| 566 | */ | ||
| 567 | public InetAddress getPeerAddress() { | ||
| 568 | try { | ||
| 569 | return InetAddress.getByName(host); | ||
| 570 | } catch (java.net.UnknownHostException e) { | ||
| 571 | return null; | ||
| 572 | } | ||
| 573 | } | ||
| 574 | |||
| 575 | public String getPeerHost() { | ||
| 576 | return host; | ||
| 577 | } | ||
| 578 | |||
| 579 | /** | ||
| 580 | * Need to provide the port info for caching sessions based on | ||
| 581 | * host and port. Accessed by SSLSessionContextImpl | ||
| 582 | */ | ||
| 583 | public int getPeerPort() { | ||
| 584 | return port; | ||
| 585 | } | ||
| 586 | |||
| 587 | void setContext(SSLSessionContextImpl ctx) { | ||
| 588 | if (context == null) { | ||
| 589 | context = ctx; | ||
| 590 | } | ||
| 591 | } | ||
| 592 | |||
| 593 | /** | ||
| 594 | * Invalidate a session. Active connections may still exist, but | ||
| 595 | * no connections will be able to rejoin this session. | ||
| 596 | */ | ||
| 597 | synchronized public void invalidate() { | ||
| 598 | // | ||
| 599 | // Can't invalidate the NULL session -- this would be | ||
| 600 | // attempted when we get a handshaking error on a brand | ||
| 601 | // new connection, with no "real" session yet. | ||
| 602 | // | ||
| 603 | if (this == nullSession) { | ||
| 604 | return; | ||
| 605 | } | ||
| 606 | invalidated = true; | ||
| 607 | if (debug != null && Debug.isOn("session")) { | ||
| 608 | System.out.println("%% Invalidated: " + this); | ||
| 609 | } | ||
| 610 | if (context != null) { | ||
| 611 | context.remove(sessionId); | ||
| 612 | context = null; | ||
| 613 | } | ||
| 614 | } | ||
| 615 | |||
| 616 | /* | ||
| 617 | * Table of application-specific session data indexed by an application | ||
| 618 | * key and the calling security context. This is important since | ||
| 619 | * sessions can be shared across different protection domains. | ||
| 620 | */ | ||
| 621 | private Hashtable<SecureKey, Object> table = new Hashtable<>(); | ||
| 622 | |||
| 623 | /** | ||
| 624 | * Assigns a session value. Session change events are given if | ||
| 625 | * appropriate, to any original value as well as the new value. | ||
| 626 | */ | ||
| 627 | public void putValue(String key, Object value) { | ||
| 628 | if ((key == null) || (value == null)) { | ||
| 629 | throw new IllegalArgumentException("arguments can not be null"); | ||
| 630 | } | ||
| 631 | |||
| 632 | SecureKey secureKey = new SecureKey(key); | ||
| 633 | Object oldValue = table.put(secureKey, value); | ||
| 634 | |||
| 635 | if (oldValue instanceof SSLSessionBindingListener) { | ||
| 636 | SSLSessionBindingEvent e; | ||
| 637 | |||
| 638 | e = new SSLSessionBindingEvent(this, key); | ||
| 639 | ((SSLSessionBindingListener)oldValue).valueUnbound(e); | ||
| 640 | } | ||
| 641 | if (value instanceof SSLSessionBindingListener) { | ||
| 642 | SSLSessionBindingEvent e; | ||
| 643 | |||
| 644 | e = new SSLSessionBindingEvent(this, key); | ||
| 645 | ((SSLSessionBindingListener)value).valueBound(e); | ||
| 646 | } | ||
| 647 | } | ||
| 648 | |||
| 649 | |||
| 650 | /** | ||
| 651 | * Returns the specified session value. | ||
| 652 | */ | ||
| 653 | public Object getValue(String key) { | ||
| 654 | if (key == null) { | ||
| 655 | throw new IllegalArgumentException("argument can not be null"); | ||
| 656 | } | ||
| 657 | |||
| 658 | SecureKey secureKey = new SecureKey(key); | ||
| 659 | return table.get(secureKey); | ||
| 660 | } | ||
| 661 | |||
| 662 | |||
| 663 | /** | ||
| 664 | * Removes the specified session value, delivering a session changed | ||
| 665 | * event as appropriate. | ||
| 666 | */ | ||
| 667 | public void removeValue(String key) { | ||
| 668 | if (key == null) { | ||
| 669 | throw new IllegalArgumentException("argument can not be null"); | ||
| 670 | } | ||
| 671 | |||
| 672 | SecureKey secureKey = new SecureKey(key); | ||
| 673 | Object value = table.remove(secureKey); | ||
| 674 | |||
| 675 | if (value instanceof SSLSessionBindingListener) { | ||
| 676 | SSLSessionBindingEvent e; | ||
| 677 | |||
| 678 | e = new SSLSessionBindingEvent(this, key); | ||
| 679 | ((SSLSessionBindingListener)value).valueUnbound(e); | ||
| 680 | } | ||
| 681 | } | ||
| 682 | |||
| 683 | |||
| 684 | /** | ||
| 685 | * Lists the names of the session values. | ||
| 686 | */ | ||
| 687 | public String[] getValueNames() { | ||
| 688 | Enumeration<SecureKey> e; | ||
| 689 | Vector<Object> v = new Vector<>(); | ||
| 690 | SecureKey key; | ||
| 691 | Object securityCtx = SecureKey.getCurrentSecurityContext(); | ||
| 692 | |||
| 693 | for (e = table.keys(); e.hasMoreElements(); ) { | ||
| 694 | key = e.nextElement(); | ||
| 695 | |||
| 696 | if (securityCtx.equals(key.getSecurityContext())) { | ||
| 697 | v.addElement(key.getAppKey()); | ||
| 698 | } | ||
| 699 | } | ||
| 700 | String[] names = new String[v.size()]; | ||
| 701 | v.copyInto(names); | ||
| 702 | |||
| 703 | return names; | ||
| 704 | } | ||
| 705 | |||
| 706 | /** | ||
| 707 | * Use large packet sizes now or follow RFC 2246 packet sizes (2^14) | ||
| 708 | * until changed. | ||
| 709 | * | ||
| 710 | * In the TLS specification (section 6.2.1, RFC2246), it is not | ||
| 711 | * recommended that the plaintext has more than 2^14 bytes. | ||
| 712 | * However, some TLS implementations violate the specification. | ||
| 713 | * This is a workaround for interoperability with these stacks. | ||
| 714 | * | ||
| 715 | * Application could accept large fragments up to 2^15 bytes by | ||
| 716 | * setting the system property jsse.SSLEngine.acceptLargeFragments | ||
| 717 | * to "true". | ||
| 718 | */ | ||
| 719 | private boolean acceptLargeFragments = | ||
| 720 | Debug.getBooleanProperty("jsse.SSLEngine.acceptLargeFragments", false); | ||
| 721 | |||
| 722 | /** | ||
| 723 | * Expand the buffer size of both SSL/TLS network packet and | ||
| 724 | * application data. | ||
| 725 | */ | ||
| 726 | protected synchronized void expandBufferSizes() { | ||
| 727 | acceptLargeFragments = true; | ||
| 728 | } | ||
| 729 | |||
| 730 | /** | ||
| 731 | * Gets the current size of the largest SSL/TLS packet that is expected | ||
| 732 | * when using this session. | ||
| 733 | */ | ||
| 734 | public synchronized int getPacketBufferSize() { | ||
| 735 | return acceptLargeFragments ? | ||
| 736 | Record.maxLargeRecordSize : Record.maxRecordSize; | ||
| 737 | } | ||
| 738 | |||
| 739 | /** | ||
| 740 | * Gets the current size of the largest application data that is | ||
| 741 | * expected when using this session. | ||
| 742 | */ | ||
| 743 | public synchronized int getApplicationBufferSize() { | ||
| 744 | return getPacketBufferSize() - Record.headerSize; | ||
| 745 | } | ||
| 746 | |||
| 747 | /** | ||
| 748 | * Gets an array of supported signature algorithms that the local side is | ||
| 749 | * willing to verify. | ||
| 750 | */ | ||
| 751 | public String[] getLocalSupportedSignatureAlgorithms() { | ||
| 752 | if (localSupportedSignAlgs != null) { | ||
| 753 | return localSupportedSignAlgs.clone(); | ||
| 754 | } | ||
| 755 | |||
| 756 | return new String[0]; | ||
| 757 | } | ||
| 758 | |||
| 759 | /** | ||
| 760 | * Gets an array of supported signature algorithms that the peer is | ||
| 761 | * able to verify. | ||
| 762 | */ | ||
| 763 | public String[] getPeerSupportedSignatureAlgorithms() { | ||
| 764 | if (peerSupportedSignAlgs != null) { | ||
| 765 | return peerSupportedSignAlgs.clone(); | ||
| 766 | } | ||
| 767 | |||
| 768 | return new String[0]; | ||
| 769 | } | ||
| 770 | |||
| 771 | /** Returns a string representation of this SSL session */ | ||
| 772 | public String toString() { | ||
| 773 | return "[Session-" + sessionCount | ||
| 774 | + ", " + getCipherSuite() | ||
| 775 | + "]"; | ||
| 776 | } | ||
| 777 | |||
| 778 | /** | ||
| 779 | * When SSL sessions are finalized, all values bound to | ||
| 780 | * them are removed. | ||
| 781 | */ | ||
| 782 | public void finalize() { | ||
| 783 | String[] names = getValueNames(); | ||
| 784 | for (int i = 0; i < names.length; i++) { | ||
| 785 | removeValue(names[i]); | ||
| 786 | } | ||
| 787 | } | ||
| 788 | } | ||
| 789 | |||
| 790 | |||
| 791 | /** | ||
| 792 | * This "struct" class serves as a Hash Key that combines an | ||
| 793 | * application-specific key and a security context. | ||
| 794 | */ | ||
| 795 | class SecureKey { | ||
| 796 | private static Object nullObject = new Object(); | ||
| 797 | private Object appKey; | ||
| 798 | private Object securityCtx; | ||
| 799 | |||
| 800 | static Object getCurrentSecurityContext() { | ||
| 801 | SecurityManager sm = System.getSecurityManager(); | ||
| 802 | Object context = null; | ||
| 803 | |||
| 804 | if (sm != null) | ||
| 805 | context = sm.getSecurityContext(); | ||
| 806 | if (context == null) | ||
| 807 | context = nullObject; | ||
| 808 | return context; | ||
| 809 | } | ||
| 810 | |||
| 811 | SecureKey(Object key) { | ||
| 812 | this.appKey = key; | ||
| 813 | this.securityCtx = getCurrentSecurityContext(); | ||
| 814 | } | ||
| 815 | |||
| 816 | Object getAppKey() { | ||
| 817 | return appKey; | ||
| 818 | } | ||
| 819 | |||
| 820 | Object getSecurityContext() { | ||
| 821 | return securityCtx; | ||
| 822 | } | ||
| 823 | |||
| 824 | public int hashCode() { | ||
| 825 | return appKey.hashCode() ^ securityCtx.hashCode(); | ||
| 826 | } | ||
| 827 | |||
| 828 | public boolean equals(Object o) { | ||
| 829 | return o instanceof SecureKey && ((SecureKey)o).appKey.equals(appKey) | ||
| 830 | && ((SecureKey)o).securityCtx.equals(securityCtx); | ||
| 831 | } | ||
| 832 | } | ||