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| 1 | /* | ||
| 2 | * Copyright (c) 1996, 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 | |||
| 27 | package sun.security.ssl; | ||
| 28 | |||
| 29 | import java.io.OutputStream; | ||
| 30 | import java.io.IOException; | ||
| 31 | import java.security.MessageDigest; | ||
| 32 | |||
| 33 | /** | ||
| 34 | * Output stream for handshake data. This is used only internally | ||
| 35 | * to the SSL classes. | ||
| 36 | * | ||
| 37 | * MT note: one thread at a time is presumed be writing handshake | ||
| 38 | * messages, but (after initial connection setup) it's possible to | ||
| 39 | * have other threads reading/writing application data. It's the | ||
| 40 | * SSLSocketImpl class that synchronizes record writes. | ||
| 41 | * | ||
| 42 | * @author David Brownell | ||
| 43 | */ | ||
| 44 | public class HandshakeOutStream extends OutputStream { | ||
| 45 | |||
| 46 | private SSLSocketImpl socket; | ||
| 47 | private SSLEngineImpl engine; | ||
| 48 | |||
| 49 | OutputRecord r; | ||
| 50 | |||
| 51 | HandshakeOutStream(ProtocolVersion protocolVersion, | ||
| 52 | ProtocolVersion helloVersion, HandshakeHash handshakeHash, | ||
| 53 | SSLSocketImpl socket) { | ||
| 54 | this.socket = socket; | ||
| 55 | r = new OutputRecord(Record.ct_handshake); | ||
| 56 | init(protocolVersion, helloVersion, handshakeHash); | ||
| 57 | } | ||
| 58 | |||
| 59 | HandshakeOutStream(ProtocolVersion protocolVersion, | ||
| 60 | ProtocolVersion helloVersion, HandshakeHash handshakeHash, | ||
| 61 | SSLEngineImpl engine) { | ||
| 62 | this.engine = engine; | ||
| 63 | r = new EngineOutputRecord(Record.ct_handshake, engine); | ||
| 64 | init(protocolVersion, helloVersion, handshakeHash); | ||
| 65 | } | ||
| 66 | |||
| 67 | private void init(ProtocolVersion protocolVersion, | ||
| 68 | ProtocolVersion helloVersion, HandshakeHash handshakeHash) { | ||
| 69 | r.setVersion(protocolVersion); | ||
| 70 | r.setHelloVersion(helloVersion); | ||
| 71 | r.setHandshakeHash(handshakeHash); | ||
| 72 | } | ||
| 73 | |||
| 74 | |||
| 75 | /* | ||
| 76 | * Update the handshake data hashes ... mostly for use after a | ||
| 77 | * client cert has been sent, so the cert verify message can be | ||
| 78 | * constructed correctly yet without forcing extra I/O. In all | ||
| 79 | * other cases, automatic hash calculation suffices. | ||
| 80 | */ | ||
| 81 | void doHashes() { | ||
| 82 | r.doHashes(); | ||
| 83 | } | ||
| 84 | |||
| 85 | /* | ||
| 86 | * Write some data out onto the stream ... buffers as much as possible. | ||
| 87 | * Hashes are updated automatically if something gets flushed to the | ||
| 88 | * network (e.g. a big cert message etc). | ||
| 89 | */ | ||
| 90 | public void write(byte buf[], int off, int len) throws IOException { | ||
| 91 | while (len > 0) { | ||
| 92 | int howmuch = Math.min(len, r.availableDataBytes()); | ||
| 93 | |||
| 94 | if (howmuch == 0) { | ||
| 95 | flush(); | ||
| 96 | } else { | ||
| 97 | r.write(buf, off, howmuch); | ||
| 98 | off += howmuch; | ||
| 99 | len -= howmuch; | ||
| 100 | } | ||
| 101 | } | ||
| 102 | } | ||
| 103 | |||
| 104 | /* | ||
| 105 | * write-a-byte | ||
| 106 | */ | ||
| 107 | public void write(int i) throws IOException { | ||
| 108 | if (r.availableDataBytes() < 1) { | ||
| 109 | flush(); | ||
| 110 | } | ||
| 111 | r.write(i); | ||
| 112 | } | ||
| 113 | |||
| 114 | public void flush() throws IOException { | ||
| 115 | if (socket != null) { | ||
| 116 | try { | ||
| 117 | socket.writeRecord(r); | ||
| 118 | } catch (IOException e) { | ||
| 119 | // Had problems writing; check if there was an | ||
| 120 | // alert from peer. If alert received, waitForClose | ||
| 121 | // will throw an exception for the alert | ||
| 122 | socket.waitForClose(true); | ||
| 123 | |||
| 124 | // No alert was received, just rethrow exception | ||
| 125 | throw e; | ||
| 126 | } | ||
| 127 | } else { // engine != null | ||
| 128 | /* | ||
| 129 | * Even if record might be empty, flush anyway in case | ||
| 130 | * there is a finished handshake message that we need | ||
| 131 | * to queue. | ||
| 132 | */ | ||
| 133 | engine.writeRecord((EngineOutputRecord)r); | ||
| 134 | } | ||
| 135 | } | ||
| 136 | |||
| 137 | /* | ||
| 138 | * Tell the OutputRecord that a finished message was | ||
| 139 | * contained either in this record or the one immeiately | ||
| 140 | * preceeding it. We need to reliably pass back notifications | ||
| 141 | * that a finish message occured. | ||
| 142 | */ | ||
| 143 | void setFinishedMsg() { | ||
| 144 | assert(socket == null); | ||
| 145 | |||
| 146 | ((EngineOutputRecord)r).setFinishedMsg(); | ||
| 147 | } | ||
| 148 | |||
| 149 | /* | ||
| 150 | * Put integers encoded in standard 8, 16, 24, and 32 bit | ||
| 151 | * big endian formats. Note that OutputStream.write(int) only | ||
| 152 | * writes the least significant 8 bits and ignores the rest. | ||
| 153 | */ | ||
| 154 | |||
| 155 | void putInt8(int i) throws IOException { | ||
| 156 | r.write(i); | ||
| 157 | } | ||
| 158 | |||
| 159 | void putInt16(int i) throws IOException { | ||
| 160 | if (r.availableDataBytes() < 2) { | ||
| 161 | flush(); | ||
| 162 | } | ||
| 163 | r.write(i >> 8); | ||
| 164 | r.write(i); | ||
| 165 | } | ||
| 166 | |||
| 167 | void putInt24(int i) throws IOException { | ||
| 168 | if (r.availableDataBytes() < 3) { | ||
| 169 | flush(); | ||
| 170 | } | ||
| 171 | r.write(i >> 16); | ||
| 172 | r.write(i >> 8); | ||
| 173 | r.write(i); | ||
| 174 | } | ||
| 175 | |||
| 176 | void putInt32(int i) throws IOException { | ||
| 177 | if (r.availableDataBytes() < 4) { | ||
| 178 | flush(); | ||
| 179 | } | ||
| 180 | r.write(i >> 24); | ||
| 181 | r.write(i >> 16); | ||
| 182 | r.write(i >> 8); | ||
| 183 | r.write(i); | ||
| 184 | } | ||
| 185 | |||
| 186 | /* | ||
| 187 | * Put byte arrays with length encoded as 8, 16, 24 bit | ||
| 188 | * integers in big-endian format. | ||
| 189 | */ | ||
| 190 | void putBytes8(byte b[]) throws IOException { | ||
| 191 | if (b == null) { | ||
| 192 | putInt8(0); | ||
| 193 | return; | ||
| 194 | } | ||
| 195 | putInt8(b.length); | ||
| 196 | write(b, 0, b.length); | ||
| 197 | } | ||
| 198 | |||
| 199 | public void putBytes16(byte b[]) throws IOException { | ||
| 200 | if (b == null) { | ||
| 201 | putInt16(0); | ||
| 202 | return; | ||
| 203 | } | ||
| 204 | putInt16(b.length); | ||
| 205 | write(b, 0, b.length); | ||
| 206 | } | ||
| 207 | |||
| 208 | void putBytes24(byte b[]) throws IOException { | ||
| 209 | if (b == null) { | ||
| 210 | putInt24(0); | ||
| 211 | return; | ||
| 212 | } | ||
| 213 | putInt24(b.length); | ||
| 214 | write(b, 0, b.length); | ||
| 215 | } | ||
| 216 | } | ||