author | wetmore |
Tue, 26 Aug 2014 17:09:05 -0700 | |
changeset 28543 | 31afdc0e77af |
parent 25859 | 3317bb8137f4 |
child 30904 | ec0224270f90 |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 1996, 2012, Oracle and/or its affiliates. All rights reserved. |
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. Oracle designates this |
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* particular file as subject to the "Classpath" exception as provided |
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* by Oracle in the LICENSE file that accompanied this code. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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* or visit www.oracle.com if you need additional information or have any |
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* questions. |
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*/ |
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package sun.security.ssl; |
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import java.io.OutputStream; |
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import java.io.IOException; |
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/* |
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* Output stream for application data. This is the kind of stream |
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* that's handed out via SSLSocket.getOutputStream(). It's all the application |
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* ever sees. |
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* |
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* Once the initial handshake has completed, application data may be |
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* interleaved with handshake data. That is handled internally and remains |
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* transparent to the application. |
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* |
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* @author David Brownell |
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*/ |
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class AppOutputStream extends OutputStream { |
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private SSLSocketImpl c; |
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OutputRecord r; |
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// One element array used to implement the write(byte) method |
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private final byte[] oneByte = new byte[1]; |
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AppOutputStream(SSLSocketImpl conn) { |
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r = new OutputRecord(Record.ct_application_data); |
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c = conn; |
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} |
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/** |
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* Write the data out, NOW. |
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*/ |
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14664
e71aa0962e70
8003950: Adds missing Override annotations and removes unnecessary imports in sun.security.ssl
xuelei
parents:
12428
diff
changeset
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@Override |
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synchronized public void write(byte b[], int off, int len) |
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throws IOException { |
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if (b == null) { |
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throw new NullPointerException(); |
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} else if (off < 0 || len < 0 || len > b.length - off) { |
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throw new IndexOutOfBoundsException(); |
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} else if (len == 0) { |
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return; |
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} |
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// check if the Socket is invalid (error or closed) |
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c.checkWrite(); |
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/* |
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* By default, we counter chosen plaintext issues on CBC mode |
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* ciphersuites in SSLv3/TLS1.0 by sending one byte of application |
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* data in the first record of every payload, and the rest in |
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* subsequent record(s). Note that the issues have been solved in |
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* TLS 1.1 or later. |
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* |
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* It is not necessary to split the very first application record of |
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* a freshly negotiated TLS session, as there is no previous |
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* application data to guess. To improve compatibility, we will not |
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* split such records. |
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* |
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* This avoids issues in the outbound direction. For a full fix, |
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* the peer must have similar protections. |
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*/ |
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boolean isFirstRecordOfThePayload = true; |
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// Always flush at the end of each application level record. |
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// This lets application synchronize read and write streams |
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// however they like; if we buffered here, they couldn't. |
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try { |
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do { |
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boolean holdRecord = false; |
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int howmuch; |
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if (isFirstRecordOfThePayload && c.needToSplitPayload()) { |
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howmuch = Math.min(0x01, r.availableDataBytes()); |
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/* |
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* Nagle's algorithm (TCP_NODELAY) was coming into |
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* play here when writing short (split) packets. |
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* Signal to the OutputRecord code to internally |
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* buffer this small packet until the next outbound |
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* packet (of any type) is written. |
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*/ |
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if ((len != 1) && (howmuch == 1)) { |
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holdRecord = true; |
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} |
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} else { |
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howmuch = Math.min(len, r.availableDataBytes()); |
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} |
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if (isFirstRecordOfThePayload && howmuch != 0) { |
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isFirstRecordOfThePayload = false; |
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} |
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// NOTE: *must* call c.writeRecord() even for howmuch == 0 |
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if (howmuch > 0) { |
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r.write(b, off, howmuch); |
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off += howmuch; |
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len -= howmuch; |
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} |
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c.writeRecord(r, holdRecord); |
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c.checkWrite(); |
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} while (len > 0); |
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} catch (Exception e) { |
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// shutdown and rethrow (wrapped) exception as appropriate |
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c.handleException(e); |
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} |
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} |
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/** |
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* Write one byte now. |
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*/ |
|
14664
e71aa0962e70
8003950: Adds missing Override annotations and removes unnecessary imports in sun.security.ssl
xuelei
parents:
12428
diff
changeset
|
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@Override |
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synchronized public void write(int i) throws IOException { |
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oneByte[0] = (byte)i; |
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write(oneByte, 0, 1); |
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} |
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/* |
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* Socket close is already synchronized, no need to block here. |
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*/ |
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14664
e71aa0962e70
8003950: Adds missing Override annotations and removes unnecessary imports in sun.security.ssl
xuelei
parents:
12428
diff
changeset
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@Override |
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public void close() throws IOException { |
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c.close(); |
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} |
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// inherit no-op flush() |
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} |