J. Duke | 319a3b9 | 2007-12-01 00:00:00 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 2005-2006 Sun Microsystems, Inc. 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. Sun designates this |
| 8 | * particular file as subject to the "Classpath" exception as provided |
| 9 | * by Sun 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| 22 | * CA 95054 USA or visit www.sun.com if you need additional information or |
| 23 | * have any questions. |
| 24 | */ |
| 25 | |
| 26 | package sun.security.jgss.spnego; |
| 27 | |
| 28 | import java.io.*; |
| 29 | import java.util.*; |
| 30 | import org.ietf.jgss.*; |
| 31 | import sun.security.jgss.*; |
| 32 | import sun.security.util.*; |
| 33 | |
| 34 | /** |
| 35 | * Implements the SPNEGO NegTokenInit token |
| 36 | * as specified in RFC 2478 |
| 37 | * |
| 38 | * NegTokenInit ::= SEQUENCE { |
| 39 | * mechTypes [0] MechTypeList OPTIONAL, |
| 40 | * reqFlags [1] ContextFlags OPTIONAL, |
| 41 | * mechToken [2] OCTET STRING OPTIONAL, |
| 42 | * mechListMIC [3] OCTET STRING OPTIONAL |
| 43 | * } |
| 44 | * |
| 45 | * MechTypeList ::= SEQUENCE OF MechType |
| 46 | * |
| 47 | * MechType::= OBJECT IDENTIFIER |
| 48 | * |
| 49 | * ContextFlags ::= BIT STRING { |
| 50 | * delegFlag (0), |
| 51 | * mutualFlag (1), |
| 52 | * replayFlag (2), |
| 53 | * sequenceFlag (3), |
| 54 | * anonFlag (4), |
| 55 | * confFlag (5), |
| 56 | * integFlag (6) |
| 57 | * } |
| 58 | * |
| 59 | * @author Seema Malkani |
| 60 | * @since 1.6 |
| 61 | */ |
| 62 | |
| 63 | public class NegTokenInit extends SpNegoToken { |
| 64 | |
| 65 | // DER-encoded mechTypes |
| 66 | private byte[] mechTypes = null; |
| 67 | private Oid[] mechTypeList = null; |
| 68 | |
| 69 | private byte[] reqFlags = null; |
| 70 | private byte[] mechToken = null; |
| 71 | private byte[] mechListMIC = null; |
| 72 | |
| 73 | NegTokenInit(byte[] mechTypes, byte[] flags, |
| 74 | byte[] token, byte[] mechListMIC) |
| 75 | { |
| 76 | super(NEG_TOKEN_INIT_ID); |
| 77 | this.mechTypes = mechTypes; |
| 78 | this.reqFlags = flags; |
| 79 | this.mechToken = token; |
| 80 | this.mechListMIC = mechListMIC; |
| 81 | } |
| 82 | |
| 83 | // Used by sun.security.jgss.wrapper.NativeGSSContext |
| 84 | // to parse SPNEGO tokens |
| 85 | public NegTokenInit(byte[] in) throws GSSException { |
| 86 | super(NEG_TOKEN_INIT_ID); |
| 87 | parseToken(in); |
| 88 | } |
| 89 | |
| 90 | final byte[] encode() throws GSSException { |
| 91 | try { |
| 92 | // create negInitToken |
| 93 | DerOutputStream initToken = new DerOutputStream(); |
| 94 | |
| 95 | // DER-encoded mechTypes with CONTEXT 00 |
| 96 | if (mechTypes != null) { |
| 97 | initToken.write(DerValue.createTag(DerValue.TAG_CONTEXT, |
| 98 | true, (byte) 0x00), mechTypes); |
| 99 | } |
| 100 | |
| 101 | // write context flags with CONTEXT 01 |
| 102 | if (reqFlags != null) { |
| 103 | DerOutputStream flags = new DerOutputStream(); |
| 104 | flags.putBitString(reqFlags); |
| 105 | initToken.write(DerValue.createTag(DerValue.TAG_CONTEXT, |
| 106 | true, (byte) 0x01), flags); |
| 107 | } |
| 108 | |
| 109 | // mechToken with CONTEXT 02 |
| 110 | if (mechToken != null) { |
| 111 | DerOutputStream dataValue = new DerOutputStream(); |
| 112 | dataValue.putOctetString(mechToken); |
| 113 | initToken.write(DerValue.createTag(DerValue.TAG_CONTEXT, |
| 114 | true, (byte) 0x02), dataValue); |
| 115 | } |
| 116 | |
| 117 | // mechListMIC with CONTEXT 03 |
| 118 | if (mechListMIC != null) { |
| 119 | if (DEBUG) { |
| 120 | System.out.println("SpNegoToken NegTokenInit: " + |
| 121 | "sending MechListMIC"); |
| 122 | } |
| 123 | DerOutputStream mic = new DerOutputStream(); |
| 124 | mic.putOctetString(mechListMIC); |
| 125 | initToken.write(DerValue.createTag(DerValue.TAG_CONTEXT, |
| 126 | true, (byte) 0x03), mic); |
| 127 | } |
| 128 | |
| 129 | // insert in a SEQUENCE |
| 130 | DerOutputStream out = new DerOutputStream(); |
| 131 | out.write(DerValue.tag_Sequence, initToken); |
| 132 | |
| 133 | return out.toByteArray(); |
| 134 | |
| 135 | } catch (IOException e) { |
| 136 | throw new GSSException(GSSException.DEFECTIVE_TOKEN, -1, |
| 137 | "Invalid SPNEGO NegTokenInit token : " + e.getMessage()); |
| 138 | } |
| 139 | } |
| 140 | |
| 141 | private void parseToken(byte[] in) throws GSSException { |
| 142 | try { |
| 143 | DerValue der = new DerValue(in); |
| 144 | // verify NegotiationToken type token |
| 145 | if (!der.isContextSpecific((byte) NEG_TOKEN_INIT_ID)) { |
| 146 | throw new IOException("SPNEGO NegoTokenInit : " + |
| 147 | "did not have right token type"); |
| 148 | } |
| 149 | DerValue tmp1 = der.data.getDerValue(); |
| 150 | if (tmp1.tag != DerValue.tag_Sequence) { |
| 151 | throw new IOException("SPNEGO NegoTokenInit : " + |
| 152 | "did not have the Sequence tag"); |
| 153 | } |
| 154 | |
| 155 | // parse SEQUENCE of mechTypes, if present |
| 156 | if (tmp1.data.available() > 0) { |
| 157 | DerValue tmp2 = tmp1.data.getDerValue(); |
| 158 | if (!tmp2.isContextSpecific((byte)0x00)) { |
| 159 | throw new IOException("SPNEGO NegoTokenInit : " + |
| 160 | "did not have the right context tag for mechTypes"); |
| 161 | } |
| 162 | // get the DER-encoded sequence of mechTypes |
| 163 | DerInputStream mValue = tmp2.data; |
| 164 | mechTypes = mValue.toByteArray(); |
| 165 | |
| 166 | // read all the mechTypes |
| 167 | DerValue[] mList = mValue.getSequence(0); |
| 168 | mechTypeList = new Oid[mList.length]; |
| 169 | ObjectIdentifier mech = null; |
| 170 | for (int i = 0; i < mList.length; i++) { |
| 171 | mech = mList[i].getOID(); |
| 172 | if (DEBUG) { |
| 173 | System.out.println("SpNegoToken NegTokenInit: " + |
| 174 | "reading Mechanism Oid = " + mech); |
| 175 | } |
| 176 | mechTypeList[i] = new Oid(mech.toString()); |
| 177 | } |
| 178 | } |
| 179 | |
| 180 | // parse mechToken, if present (skip reqFlags) |
| 181 | if (tmp1.data.available() > 0) { |
| 182 | DerValue tmp3 = tmp1.data.getDerValue(); |
| 183 | if (tmp3.isContextSpecific((byte)0x01)) { |
| 184 | // received reqFlags, skip it |
| 185 | // now parse next field mechToken |
| 186 | if (tmp1.data.available() > 0) { |
| 187 | tmp3 = tmp1.data.getDerValue(); |
| 188 | } |
| 189 | } |
| 190 | if (!tmp3.isContextSpecific((byte)0x02)) { |
| 191 | throw new IOException("SPNEGO NegoTokenInit : " + |
| 192 | "did not have the right context tag for mechToken"); |
| 193 | } |
| 194 | if (DEBUG) { |
| 195 | System.out.println("SpNegoToken NegTokenInit: " + |
| 196 | "reading Mech Token"); |
| 197 | } |
| 198 | mechToken = tmp3.data.getOctetString(); |
| 199 | } |
| 200 | |
| 201 | // parse mechListMIC, if present and not in MS interop mode |
| 202 | if (!GSSUtil.useMSInterop() && (tmp1.data.available() > 0)) { |
| 203 | if (DEBUG) { |
| 204 | System.out.println("SpNegoToken NegTokenInit: " + |
| 205 | "receiving MechListMIC"); |
| 206 | } |
| 207 | DerValue tmp6 = tmp1.data.getDerValue(); |
| 208 | if (!tmp6.isContextSpecific((byte)0x03)) { |
| 209 | throw new IOException("SPNEGO NegoTokenInit : " + |
| 210 | "did not have the right context tag for MICToken"); |
| 211 | } |
| 212 | mechListMIC = tmp6.data.getOctetString(); |
| 213 | if (DEBUG) { |
| 214 | System.out.println("SpNegoToken NegTokenInit: " + |
| 215 | "MechListMIC Token = " + getHexBytes(mechListMIC)); |
| 216 | } |
| 217 | } else { |
| 218 | if (DEBUG) { |
| 219 | System.out.println("SpNegoToken NegTokenInit : " + |
| 220 | "no MIC token included"); |
| 221 | } |
| 222 | } |
| 223 | |
| 224 | } catch (IOException e) { |
| 225 | throw new GSSException(GSSException.DEFECTIVE_TOKEN, -1, |
| 226 | "Invalid SPNEGO NegTokenInit token : " + e.getMessage()); |
| 227 | } |
| 228 | } |
| 229 | |
| 230 | byte[] getMechTypes() { |
| 231 | return mechTypes; |
| 232 | } |
| 233 | |
| 234 | // Used by sun.security.jgss.wrapper.NativeGSSContext |
| 235 | // to find the mechs in SPNEGO tokens |
| 236 | public Oid[] getMechTypeList() { |
| 237 | return mechTypeList; |
| 238 | } |
| 239 | |
| 240 | byte[] getReqFlags() { |
| 241 | return reqFlags; |
| 242 | } |
| 243 | |
| 244 | // Used by sun.security.jgss.wrapper.NativeGSSContext |
| 245 | // to access the mech token portion of SPNEGO tokens |
| 246 | public byte[] getMechToken() { |
| 247 | return mechToken; |
| 248 | } |
| 249 | |
| 250 | byte[] getMechListMIC() { |
| 251 | return mechListMIC; |
| 252 | } |
| 253 | |
| 254 | } |