Showing the changes to java/pkg/sun/security/ssl/Krb5Helper.java (1 of 18352 files). Show all
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| 1 | +/* | |
| 2 | + * Copyright (c) 2009, 2010, 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 sun.security.ssl; | |
| 27 | + | |
| 28 | +import java.security.AccessControlContext; | |
| 29 | +import java.security.AccessController; | |
| 30 | +import java.security.Permission; | |
| 31 | +import java.security.Principal; | |
| 32 | +import java.security.PrivilegedAction; | |
| 33 | +import javax.crypto.SecretKey; | |
| 34 | +import javax.security.auth.Subject; | |
| 35 | +import javax.security.auth.login.LoginException; | |
| 36 | + | |
| 37 | +/** | |
| 38 | + * A helper class for Kerberos APIs. | |
| 39 | + */ | |
| 40 | +public final class Krb5Helper { | |
| 41 | + | |
| 42 | + private Krb5Helper() { } | |
| 43 | + | |
| 44 | + // loads Krb5Proxy implementation class if available | |
| 45 | + private static final String IMPL_CLASS = | |
| 46 | + "sun.security.ssl.krb5.Krb5ProxyImpl"; | |
| 47 | + | |
| 48 | + private static final Krb5Proxy proxy = | |
| 49 | + AccessController.doPrivileged(new PrivilegedAction<Krb5Proxy>() { | |
| 50 | + public Krb5Proxy run() { | |
| 51 | + try { | |
| 52 | + Class<?> c = Class.forName(IMPL_CLASS, true, null); | |
| 53 | + return (Krb5Proxy)c.newInstance(); | |
| 54 | + } catch (ClassNotFoundException cnf) { | |
| 55 | + return null; | |
| 56 | + } catch (InstantiationException e) { | |
| 57 | + throw new AssertionError(e); | |
| 58 | + } catch (IllegalAccessException e) { | |
| 59 | + throw new AssertionError(e); | |
| 60 | + } | |
| 61 | + }}); | |
| 62 | + | |
| 63 | + /** | |
| 64 | + * Returns true if Kerberos is available. | |
| 65 | + */ | |
| 66 | + public static boolean isAvailable() { | |
| 67 | + return proxy != null; | |
| 68 | + } | |
| 69 | + | |
| 70 | + private static void ensureAvailable() { | |
| 71 | + if (proxy == null) | |
| 72 | + throw new AssertionError("Kerberos should have been available"); | |
| 73 | + } | |
| 74 | + | |
| 75 | + /** | |
| 76 | + * Returns the Subject associated with client-side of the SSL socket. | |
| 77 | + */ | |
| 78 | + public static Subject getClientSubject(AccessControlContext acc) | |
| 79 | + throws LoginException { | |
| 80 | + ensureAvailable(); | |
| 81 | + return proxy.getClientSubject(acc); | |
| 82 | + } | |
| 83 | + | |
| 84 | + /** | |
| 85 | + * Returns the Subject associated with server-side of the SSL socket. | |
| 86 | + */ | |
| 87 | + public static Subject getServerSubject(AccessControlContext acc) | |
| 88 | + throws LoginException { | |
| 89 | + ensureAvailable(); | |
| 90 | + return proxy.getServerSubject(acc); | |
| 91 | + } | |
| 92 | + | |
| 93 | + /** | |
| 94 | + * Returns the KerberosKeys for the default server-side principal. | |
| 95 | + */ | |
| 96 | + public static SecretKey[] getServerKeys(AccessControlContext acc) | |
| 97 | + throws LoginException { | |
| 98 | + ensureAvailable(); | |
| 99 | + return proxy.getServerKeys(acc); | |
| 100 | + } | |
| 101 | + | |
| 102 | + /** | |
| 103 | + * Returns the server-side principal name associated with the KerberosKey. | |
| 104 | + */ | |
| 105 | + public static String getServerPrincipalName(SecretKey kerberosKey) { | |
| 106 | + ensureAvailable(); | |
| 107 | + return proxy.getServerPrincipalName(kerberosKey); | |
| 108 | + } | |
| 109 | + | |
| 110 | + /** | |
| 111 | + * Returns the hostname embedded in the principal name. | |
| 112 | + */ | |
| 113 | + public static String getPrincipalHostName(Principal principal) { | |
| 114 | + ensureAvailable(); | |
| 115 | + return proxy.getPrincipalHostName(principal); | |
| 116 | + } | |
| 117 | + | |
| 118 | + /** | |
| 119 | + * Returns a ServicePermission for the principal name and action. | |
| 120 | + */ | |
| 121 | + public static Permission getServicePermission(String principalName, | |
| 122 | + String action) { | |
| 123 | + ensureAvailable(); | |
| 124 | + return proxy.getServicePermission(principalName, action); | |
| 125 | + } | |
| 126 | +} | |