| /* RecordOutputStream.java -- record layer output. |
| Copyright (C) 2006 Free Software Foundation, Inc. |
| |
| This file is a part of GNU Classpath. |
| |
| GNU Classpath is free software; you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 2 of the License, or (at |
| your option) any later version. |
| |
| GNU Classpath 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 for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with GNU Classpath; if not, write to the Free Software |
| Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 |
| USA |
| |
| Linking this library statically or dynamically with other modules is |
| making a combined work based on this library. Thus, the terms and |
| conditions of the GNU General Public License cover the whole |
| combination. |
| |
| As a special exception, the copyright holders of this library give you |
| permission to link this library with independent modules to produce an |
| executable, regardless of the license terms of these independent |
| modules, and to copy and distribute the resulting executable under |
| terms of your choice, provided that you also meet, for each linked |
| independent module, the terms and conditions of the license of that |
| module. An independent module is a module which is not derived from |
| or based on this library. If you modify this library, you may extend |
| this exception to your version of the library, but you are not |
| obligated to do so. If you do not wish to do so, delete this |
| exception statement from your version. */ |
| |
| |
| package gnu.javax.net.ssl.provider; |
| |
| import gnu.classpath.SystemProperties; |
| import gnu.classpath.debug.Component; |
| import gnu.classpath.debug.SystemLogger; |
| |
| import java.io.FilterOutputStream; |
| import java.io.IOException; |
| import java.io.OutputStream; |
| import java.io.PrintWriter; |
| |
| import java.util.logging.Logger; |
| |
| /** |
| * An output stream for writing data to the record layer. All data written |
| * to this stream (through any of the write methods) is immediately sent |
| * as a full record, so it is advisable to write large arrays to the stream |
| * instead of one byte at a time (alternatively, a {@link |
| * java.io.BufferedOutputStream} can be used). |
| */ |
| class RecordOutputStream extends FilterOutputStream |
| { |
| |
| // Fields. |
| // ------------------------------------------------------------------------- |
| |
| private static final boolean DEBUG_RECORD_LAYER = true; |
| private static final Logger logger = SystemLogger.SYSTEM; |
| |
| /** |
| * The content type of this output stream. |
| */ |
| private final ContentType type; |
| |
| /** |
| * The security parameters. |
| */ |
| private final SecurityParameters params; |
| |
| private final boolean emitEmpty; |
| |
| private static final byte[] ZERO = new byte[0]; |
| |
| // Constructor. |
| // ------------------------------------------------------------------------- |
| |
| RecordOutputStream (final OutputStream out, final ContentType type, |
| final SecurityParameters params) |
| { |
| super (out); |
| this.type = type; |
| this.params = params; |
| String empty = Util.getSecurityProperty ("jessie.emit.empty.records"); |
| if (empty == null) |
| { |
| // IE panics if it gets an empty record; so, leave this false |
| // for the default. |
| empty = "false"; |
| } |
| emitEmpty = Boolean.valueOf (empty).booleanValue () && |
| type == ContentType.APPLICATION_DATA; |
| } |
| |
| // Instance methods. |
| // ------------------------------------------------------------------------- |
| |
| public void write (int b) throws IOException |
| { |
| write (new byte[] { (byte) b }); |
| } |
| |
| public void write (byte[] buf) throws IOException |
| { |
| write (buf, 0, buf.length); |
| } |
| |
| public void write (byte[] buf, int off, int len) throws IOException |
| { |
| if (off < 0 || len < 0 || off + len > buf.length) |
| { |
| throw new ArrayIndexOutOfBoundsException ("size=" + buf.length + |
| " off=" + off + " len=" + len); |
| } |
| |
| int count = 0; |
| int len2 = 0; |
| do |
| { |
| if (emitEmpty) |
| { |
| byte[] fragment = params.encrypt (ZERO, 0, 0, type); |
| if (DEBUG_RECORD_LAYER) |
| { |
| logger.log (Component.SSL_RECORD_LAYER, |
| ">> WRITING RECORD <<{4}" + |
| "struct {{4}" + |
| " type = {0};{4}" + |
| " version = {1};{4}" + |
| " length = {2};{4}" + |
| "{3}{4}" + |
| "} TLSCiphertext;", new Object[] |
| { |
| type, params.getVersion (), new Integer (fragment.length), |
| Util.hexDump (fragment, " "), |
| SystemProperties.getProperty ("line.separator") |
| }); |
| } |
| out.write (type.getValue()); |
| params.getVersion().write (out); |
| out.write ((fragment.length >>> 8) & 0xFF); |
| out.write ( fragment.length & 0xFF); |
| out.write (fragment); |
| out.flush (); |
| } |
| len2 = Math.min (len - count, params.getFragmentLength()); |
| if (DEBUG_RECORD_LAYER) |
| { |
| logger.log (Component.SSL_RECORD_LAYER, |
| "writing chunk size={0}", new Integer (len2)); |
| } |
| synchronized (out) |
| { |
| byte[] fragment = params.encrypt (buf, off + count, len2, type); |
| if (DEBUG_RECORD_LAYER) |
| { |
| logger.log (Component.SSL_RECORD_LAYER, |
| ">> WRITING RECORD <<{4}" + |
| "struct {{4}" + |
| " type = {0};{4}" + |
| " version = {1};{4}" + |
| " length = {2};{4}" + |
| "{3}{4}" + |
| "} TLSCiphertext;", new Object[] |
| { |
| type, params.getVersion (), new Integer (fragment.length), |
| Util.hexDump (fragment, " "), |
| SystemProperties.getProperty ("line.separator") |
| }); |
| } |
| out.write (type.getValue()); |
| params.getVersion().write (out); |
| out.write ((fragment.length >>> 8) & 0xFF); |
| out.write ( fragment.length & 0xFF); |
| out.write (fragment); |
| out.flush (); |
| } |
| count += len2; |
| } |
| while (count < len); |
| } |
| } |