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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 | |||
| 32 | /* | ||
| 33 | * Output stream for application data. This is the kind of stream | ||
| 34 | * that's handed out via SSLSocket.getOutputStream(). It's all the application | ||
| 35 | * ever sees. | ||
| 36 | * | ||
| 37 | * Once the initial handshake has completed, application data may be | ||
| 38 | * interleaved with handshake data. That is handled internally and remains | ||
| 39 | * transparent to the application. | ||
| 40 | * | ||
| 41 | * @author David Brownell | ||
| 42 | */ | ||
| 43 | class AppOutputStream extends OutputStream { | ||
| 44 | |||
| 45 | private SSLSocketImpl c; | ||
| 46 | OutputRecord r; | ||
| 47 | |||
| 48 | // One element array used to implement the write(byte) method | ||
| 49 | private final byte[] oneByte = new byte[1]; | ||
| 50 | |||
| 51 | AppOutputStream(SSLSocketImpl conn) { | ||
| 52 | r = new OutputRecord(Record.ct_application_data); | ||
| 53 | c = conn; | ||
| 54 | } | ||
| 55 | |||
| 56 | /** | ||
| 57 | * Write the data out, NOW. | ||
| 58 | */ | ||
| 59 | synchronized public void write(byte b[], int off, int len) | ||
| 60 | throws IOException { | ||
| 61 | if (b == null) { | ||
| 62 | throw new NullPointerException(); | ||
| 63 | } else if (off < 0 || len < 0 || len > b.length - off) { | ||
| 64 | throw new IndexOutOfBoundsException(); | ||
| 65 | } else if (len == 0) { | ||
| 66 | return; | ||
| 67 | } | ||
| 68 | |||
| 69 | // check if the Socket is invalid (error or closed) | ||
| 70 | c.checkWrite(); | ||
| 71 | |||
| 72 | // Always flush at the end of each application level record. | ||
| 73 | // This lets application synchronize read and write streams | ||
| 74 | // however they like; if we buffered here, they couldn't. | ||
| 75 | try { | ||
| 76 | do { | ||
| 77 | int howmuch = Math.min(len, r.availableDataBytes()); | ||
| 78 | |||
| 79 | // NOTE: *must* call c.writeRecord() even for howmuch == 0 | ||
| 80 | if (howmuch > 0) { | ||
| 81 | r.write(b, off, howmuch); | ||
| 82 | off += howmuch; | ||
| 83 | len -= howmuch; | ||
| 84 | } | ||
| 85 | c.writeRecord(r); | ||
| 86 | c.checkWrite(); | ||
| 87 | } while (len > 0); | ||
| 88 | } catch (Exception e) { | ||
| 89 | // shutdown and rethrow (wrapped) exception as appropriate | ||
| 90 | c.handleException(e); | ||
| 91 | } | ||
| 92 | } | ||
| 93 | |||
| 94 | /** | ||
| 95 | * Write one byte now. | ||
| 96 | */ | ||
| 97 | synchronized public void write(int i) throws IOException { | ||
| 98 | oneByte[0] = (byte)i; | ||
| 99 | write(oneByte, 0, 1); | ||
| 100 | } | ||
| 101 | |||
| 102 | /* | ||
| 103 | * Socket close is already synchronized, no need to block here. | ||
| 104 | */ | ||
| 105 | public void close() throws IOException { | ||
| 106 | c.close(); | ||
| 107 | } | ||
| 108 | |||
| 109 | // inherit no-op flush() | ||
| 110 | } | ||