| /* |
| * Copyright (c) 2005, 2017, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| package sun.security.jgss.wrapper; |
| |
| import org.ietf.jgss.*; |
| import java.security.Provider; |
| import java.security.Security; |
| import java.io.IOException; |
| import java.io.UnsupportedEncodingException; |
| import sun.security.krb5.Realm; |
| import sun.security.jgss.GSSUtil; |
| import sun.security.util.ObjectIdentifier; |
| import sun.security.util.DerInputStream; |
| import sun.security.util.DerOutputStream; |
| import sun.security.jgss.GSSUtil; |
| import sun.security.jgss.GSSExceptionImpl; |
| import sun.security.jgss.spi.GSSNameSpi; |
| |
| import javax.security.auth.kerberos.ServicePermission; |
| |
| /** |
| * This class is essentially a wrapper class for the gss_name_t |
| * structure of the native GSS library. |
| * @author Valerie Peng |
| * @since 1.6 |
| */ |
| |
| public class GSSNameElement implements GSSNameSpi { |
| |
| long pName = 0; // Pointer to the gss_name_t structure |
| private String printableName; |
| private Oid printableType; |
| private GSSLibStub cStub; |
| |
| static final GSSNameElement DEF_ACCEPTOR = new GSSNameElement(); |
| |
| private static Oid getNativeNameType(Oid nameType, GSSLibStub stub) { |
| if (GSSUtil.NT_GSS_KRB5_PRINCIPAL.equals(nameType)) { |
| Oid[] supportedNTs = null; |
| try { |
| supportedNTs = stub.inquireNamesForMech(); |
| } catch (GSSException ge) { |
| if (ge.getMajor() == GSSException.BAD_MECH && |
| GSSUtil.isSpNegoMech(stub.getMech())) { |
| // Workaround known Heimdal issue and retry with KRB5 |
| try { |
| stub = GSSLibStub.getInstance |
| (GSSUtil.GSS_KRB5_MECH_OID); |
| supportedNTs = stub.inquireNamesForMech(); |
| } catch (GSSException ge2) { |
| // Should never happen |
| SunNativeProvider.debug("Name type list unavailable: " + |
| ge2.getMajorString()); |
| } |
| } else { |
| SunNativeProvider.debug("Name type list unavailable: " + |
| ge.getMajorString()); |
| } |
| } |
| if (supportedNTs != null) { |
| for (int i = 0; i < supportedNTs.length; i++) { |
| if (supportedNTs[i].equals(nameType)) return nameType; |
| } |
| // Special handling the specified name type |
| SunNativeProvider.debug("Override " + nameType + |
| " with mechanism default(null)"); |
| return null; // Use mechanism specific default |
| } |
| } |
| return nameType; |
| } |
| |
| private GSSNameElement() { |
| printableName = "<DEFAULT ACCEPTOR>"; |
| } |
| |
| GSSNameElement(long pNativeName, GSSLibStub stub) throws GSSException { |
| assert(stub != null); |
| if (pNativeName == 0) { |
| throw new GSSException(GSSException.BAD_NAME); |
| } |
| // Note: pNativeName is assumed to be a MN. |
| pName = pNativeName; |
| cStub = stub; |
| setPrintables(); |
| } |
| |
| GSSNameElement(byte[] nameBytes, Oid nameType, GSSLibStub stub) |
| throws GSSException { |
| assert(stub != null); |
| if (nameBytes == null) { |
| throw new GSSException(GSSException.BAD_NAME); |
| } |
| cStub = stub; |
| byte[] name = nameBytes; |
| |
| if (nameType != null) { |
| // Special handling the specified name type if |
| // necessary |
| nameType = getNativeNameType(nameType, stub); |
| |
| if (GSSName.NT_EXPORT_NAME.equals(nameType)) { |
| // Need to add back the mech Oid portion (stripped |
| // off by GSSNameImpl class prior to calling this |
| // method) for "NT_EXPORT_NAME" |
| byte[] mechBytes = null; |
| DerOutputStream dout = new DerOutputStream(); |
| Oid mech = cStub.getMech(); |
| try { |
| dout.putOID(new ObjectIdentifier(mech.toString())); |
| } catch (IOException e) { |
| throw new GSSExceptionImpl(GSSException.FAILURE, e); |
| } |
| mechBytes = dout.toByteArray(); |
| name = new byte[2 + 2 + mechBytes.length + 4 + nameBytes.length]; |
| int pos = 0; |
| name[pos++] = 0x04; |
| name[pos++] = 0x01; |
| name[pos++] = (byte) (mechBytes.length>>>8); |
| name[pos++] = (byte) mechBytes.length; |
| System.arraycopy(mechBytes, 0, name, pos, mechBytes.length); |
| pos += mechBytes.length; |
| name[pos++] = (byte) (nameBytes.length>>>24); |
| name[pos++] = (byte) (nameBytes.length>>>16); |
| name[pos++] = (byte) (nameBytes.length>>>8); |
| name[pos++] = (byte) nameBytes.length; |
| System.arraycopy(nameBytes, 0, name, pos, nameBytes.length); |
| } |
| } |
| pName = cStub.importName(name, nameType); |
| setPrintables(); |
| |
| SecurityManager sm = System.getSecurityManager(); |
| if (sm != null && !Realm.AUTODEDUCEREALM) { |
| String krbName = getKrbName(); |
| int atPos = krbName.lastIndexOf('@'); |
| if (atPos != -1) { |
| String atRealm = krbName.substring(atPos); |
| // getNativeNameType() can modify NT_GSS_KRB5_PRINCIPAL to null |
| if ((nameType == null |
| || nameType.equals(GSSUtil.NT_GSS_KRB5_PRINCIPAL)) |
| && new String(nameBytes).endsWith(atRealm)) { |
| // Created from Kerberos name with realm, no need to check |
| } else { |
| try { |
| sm.checkPermission(new ServicePermission(atRealm, "-")); |
| } catch (SecurityException se) { |
| // Do not chain the actual exception to hide info |
| throw new GSSException(GSSException.FAILURE); |
| } |
| } |
| } |
| } |
| |
| SunNativeProvider.debug("Imported " + printableName + " w/ type " + |
| printableType); |
| } |
| |
| private void setPrintables() throws GSSException { |
| Object[] printables = null; |
| printables = cStub.displayName(pName); |
| assert((printables != null) && (printables.length == 2)); |
| printableName = (String) printables[0]; |
| assert(printableName != null); |
| printableType = (Oid) printables[1]; |
| if (printableType == null) { |
| printableType = GSSName.NT_USER_NAME; |
| } |
| } |
| |
| // Need to be public for GSSUtil.getSubject() |
| public String getKrbName() throws GSSException { |
| long mName = 0; |
| GSSLibStub stub = cStub; |
| if (!GSSUtil.isKerberosMech(cStub.getMech())) { |
| stub = GSSLibStub.getInstance(GSSUtil.GSS_KRB5_MECH_OID); |
| } |
| mName = stub.canonicalizeName(pName); |
| Object[] printables2 = stub.displayName(mName); |
| stub.releaseName(mName); |
| SunNativeProvider.debug("Got kerberized name: " + printables2[0]); |
| return (String) printables2[0]; |
| } |
| |
| public Provider getProvider() { |
| return SunNativeProvider.INSTANCE; |
| } |
| |
| public boolean equals(GSSNameSpi other) throws GSSException { |
| if (!(other instanceof GSSNameElement)) { |
| return false; |
| } |
| return cStub.compareName(pName, ((GSSNameElement)other).pName); |
| } |
| |
| public boolean equals(Object other) { |
| if (!(other instanceof GSSNameElement)) { |
| return false; |
| } |
| try { |
| return equals((GSSNameElement) other); |
| } catch (GSSException ex) { |
| return false; |
| } |
| } |
| |
| public int hashCode() { |
| return Long.hashCode(pName); |
| } |
| |
| public byte[] export() throws GSSException { |
| byte[] nameVal = cStub.exportName(pName); |
| |
| // Need to strip off the mech Oid portion of the exported |
| // bytes since GSSNameImpl class will subsequently add it. |
| int pos = 0; |
| if ((nameVal[pos++] != 0x04) || |
| (nameVal[pos++] != 0x01)) |
| throw new GSSException(GSSException.BAD_NAME); |
| |
| int mechOidLen = (((0xFF & nameVal[pos++]) << 8) | |
| (0xFF & nameVal[pos++])); |
| ObjectIdentifier temp = null; |
| try { |
| DerInputStream din = new DerInputStream(nameVal, pos, |
| mechOidLen); |
| temp = new ObjectIdentifier(din); |
| } catch (IOException e) { |
| throw new GSSExceptionImpl(GSSException.BAD_NAME, e); |
| } |
| Oid mech2 = new Oid(temp.toString()); |
| assert(mech2.equals(getMechanism())); |
| pos += mechOidLen; |
| int mechPortionLen = (((0xFF & nameVal[pos++]) << 24) | |
| ((0xFF & nameVal[pos++]) << 16) | |
| ((0xFF & nameVal[pos++]) << 8) | |
| (0xFF & nameVal[pos++])); |
| if (mechPortionLen < 0) { |
| throw new GSSException(GSSException.BAD_NAME); |
| } |
| byte[] mechPortion = new byte[mechPortionLen]; |
| System.arraycopy(nameVal, pos, mechPortion, 0, mechPortionLen); |
| return mechPortion; |
| } |
| |
| public Oid getMechanism() { |
| return cStub.getMech(); |
| } |
| |
| public String toString() { |
| return printableName; |
| } |
| |
| public Oid getStringNameType() { |
| return printableType; |
| } |
| |
| public boolean isAnonymousName() { |
| return (GSSName.NT_ANONYMOUS.equals(printableType)); |
| } |
| |
| public void dispose() { |
| if (pName != 0) { |
| cStub.releaseName(pName); |
| pName = 0; |
| } |
| } |
| |
| @SuppressWarnings("deprecation") |
| protected void finalize() throws Throwable { |
| dispose(); |
| } |
| } |