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| 1 | /* | ||
| 2 | * Copyright (c) 2005, 2009, 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.jgss.wrapper; | ||
| 27 | |||
| 28 | import java.io.UnsupportedEncodingException; | ||
| 29 | import java.security.Provider; | ||
| 30 | import java.util.Vector; | ||
| 31 | import org.ietf.jgss.*; | ||
| 32 | import sun.security.jgss.GSSUtil; | ||
| 33 | import sun.security.jgss.GSSCaller; | ||
| 34 | import sun.security.jgss.GSSExceptionImpl; | ||
| 35 | import sun.security.jgss.spi.*; | ||
| 36 | |||
| 37 | /** | ||
| 38 | * JGSS plugin for generic mechanisms provided through native GSS framework. | ||
| 39 | * | ||
| 40 | * @author Valerie Peng | ||
| 41 | */ | ||
| 42 | |||
| 43 | public final class NativeGSSFactory implements MechanismFactory { | ||
| 44 | |||
| 45 | GSSLibStub cStub = null; | ||
| 46 | private final GSSCaller caller; | ||
| 47 | |||
| 48 | private GSSCredElement getCredFromSubject(GSSNameElement name, | ||
| 49 | boolean initiate) | ||
| 50 | throws GSSException { | ||
| 51 | Oid mech = cStub.getMech(); | ||
| 52 | Vector<GSSCredElement> creds = GSSUtil.searchSubject | ||
| 53 | (name, mech, initiate, GSSCredElement.class); | ||
| 54 | |||
| 55 | // If Subject is present but no native creds available | ||
| 56 | if (creds != null && creds.isEmpty()) { | ||
| 57 | if (GSSUtil.useSubjectCredsOnly(caller)) { | ||
| 58 | throw new GSSException(GSSException.NO_CRED); | ||
| 59 | } | ||
| 60 | } | ||
| 61 | |||
| 62 | GSSCredElement result = ((creds == null || creds.isEmpty()) ? | ||
| 63 | null : creds.firstElement()); | ||
| 64 | // Force permission check before returning the cred to caller | ||
| 65 | if (result != null) { | ||
| 66 | result.doServicePermCheck(); | ||
| 67 | } | ||
| 68 | return result; | ||
| 69 | } | ||
| 70 | |||
| 71 | public NativeGSSFactory(GSSCaller caller) { | ||
| 72 | this.caller = caller; | ||
| 73 | // Have to call setMech(Oid) explicitly before calling other | ||
| 74 | // methods. Otherwise, NPE may be thrown unexpectantly | ||
| 75 | } | ||
| 76 | |||
| 77 | public void setMech(Oid mech) throws GSSException { | ||
| 78 | cStub = GSSLibStub.getInstance(mech); | ||
| 79 | } | ||
| 80 | |||
| 81 | public GSSNameSpi getNameElement(String nameStr, Oid nameType) | ||
| 82 | throws GSSException { | ||
| 83 | try { | ||
| 84 | byte[] nameBytes = | ||
| 85 | (nameStr == null ? null : nameStr.getBytes("UTF-8")); | ||
| 86 | return new GSSNameElement(nameBytes, nameType, cStub); | ||
| 87 | } catch (UnsupportedEncodingException uee) { | ||
| 88 | // Shouldn't happen | ||
| 89 | throw new GSSExceptionImpl(GSSException.FAILURE, uee); | ||
| 90 | } | ||
| 91 | } | ||
| 92 | |||
| 93 | public GSSNameSpi getNameElement(byte[] name, Oid nameType) | ||
| 94 | throws GSSException { | ||
| 95 | return new GSSNameElement(name, nameType, cStub); | ||
| 96 | } | ||
| 97 | |||
| 98 | public GSSCredentialSpi getCredentialElement(GSSNameSpi name, | ||
| 99 | int initLifetime, | ||
| 100 | int acceptLifetime, | ||
| 101 | int usage) | ||
| 102 | throws GSSException { | ||
| 103 | GSSNameElement nname = null; | ||
| 104 | if (name != null && !(name instanceof GSSNameElement)) { | ||
| 105 | nname = (GSSNameElement) | ||
| 106 | getNameElement(name.toString(), name.getStringNameType()); | ||
| 107 | } else nname = (GSSNameElement) name; | ||
| 108 | |||
| 109 | if (usage == GSSCredential.INITIATE_AND_ACCEPT) { | ||
| 110 | // Force separate acqusition of cred element since | ||
| 111 | // MIT's impl does not correctly report NO_CRED error. | ||
| 112 | usage = GSSCredential.INITIATE_ONLY; | ||
| 113 | } | ||
| 114 | |||
| 115 | GSSCredElement credElement = | ||
| 116 | getCredFromSubject((GSSNameElement) nname, | ||
| 117 | (usage == GSSCredential.INITIATE_ONLY)); | ||
| 118 | |||
| 119 | if (credElement == null) { | ||
| 120 | // No cred in the Subject | ||
| 121 | if (usage == GSSCredential.INITIATE_ONLY) { | ||
| 122 | credElement = new GSSCredElement(nname, initLifetime, | ||
| 123 | usage, cStub); | ||
| 124 | } else if (usage == GSSCredential.ACCEPT_ONLY) { | ||
| 125 | if (nname == null) { | ||
| 126 | nname = GSSNameElement.DEF_ACCEPTOR; | ||
| 127 | } | ||
| 128 | credElement = new GSSCredElement(nname, acceptLifetime, | ||
| 129 | usage, cStub); | ||
| 130 | } else { | ||
| 131 | throw new GSSException(GSSException.FAILURE, -1, | ||
| 132 | "Unknown usage mode requested"); | ||
| 133 | } | ||
| 134 | } | ||
| 135 | return credElement; | ||
| 136 | } | ||
| 137 | |||
| 138 | public GSSContextSpi getMechanismContext(GSSNameSpi peer, | ||
| 139 | GSSCredentialSpi myCred, | ||
| 140 | int lifetime) | ||
| 141 | throws GSSException { | ||
| 142 | if (peer == null) { | ||
| 143 | throw new GSSException(GSSException.BAD_NAME); | ||
| 144 | } else if (!(peer instanceof GSSNameElement)) { | ||
| 145 | peer = (GSSNameElement) | ||
| 146 | getNameElement(peer.toString(), peer.getStringNameType()); | ||
| 147 | } | ||
| 148 | if (myCred == null) { | ||
| 149 | myCred = getCredFromSubject(null, true); | ||
| 150 | } else if (!(myCred instanceof GSSCredElement)) { | ||
| 151 | throw new GSSException(GSSException.NO_CRED); | ||
| 152 | } | ||
| 153 | return new NativeGSSContext((GSSNameElement) peer, | ||
| 154 | (GSSCredElement) myCred, | ||
| 155 | lifetime, cStub); | ||
| 156 | } | ||
| 157 | |||
| 158 | public GSSContextSpi getMechanismContext(GSSCredentialSpi myCred) | ||
| 159 | throws GSSException { | ||
| 160 | if (myCred == null) { | ||
| 161 | myCred = getCredFromSubject(null, false); | ||
| 162 | } else if (!(myCred instanceof GSSCredElement)) { | ||
| 163 | throw new GSSException(GSSException.NO_CRED); | ||
| 164 | } | ||
| 165 | return new NativeGSSContext((GSSCredElement) myCred, cStub); | ||
| 166 | } | ||
| 167 | |||
| 168 | public GSSContextSpi getMechanismContext(byte[] exportedContext) | ||
| 169 | throws GSSException { | ||
| 170 | return cStub.importContext(exportedContext); | ||
| 171 | } | ||
| 172 | |||
| 173 | public final Oid getMechanismOid() { | ||
| 174 | return cStub.getMech(); | ||
| 175 | } | ||
| 176 | |||
| 177 | public Provider getProvider() { | ||
| 178 | return SunNativeProvider.INSTANCE; | ||
| 179 | } | ||
| 180 | |||
| 181 | public Oid[] getNameTypes() throws GSSException { | ||
| 182 | return cStub.inquireNamesForMech(); | ||
| 183 | } | ||
| 184 | } | ||