From 554fd8c5195424bdbcabf5de30fdc183aba391bd Mon Sep 17 00:00:00 2001 From: upstream source tree Date: Sun, 15 Mar 2015 20:14:05 -0400 Subject: obtained gcc-4.6.4.tar.bz2 from upstream website; verified gcc-4.6.4.tar.bz2.sig; imported gcc-4.6.4 source tree from verified upstream tarball. downloading a git-generated archive based on the 'upstream' tag should provide you with a source tree that is binary identical to the one extracted from the above tarball. if you have obtained the source via the command 'git clone', however, do note that line-endings of files in your working directory might differ from line-endings of the respective files in the upstream repository. --- .../classpath/javax/crypto/CipherOutputStream.java | 154 +++++++++++++++++++++ 1 file changed, 154 insertions(+) create mode 100644 libjava/classpath/javax/crypto/CipherOutputStream.java (limited to 'libjava/classpath/javax/crypto/CipherOutputStream.java') diff --git a/libjava/classpath/javax/crypto/CipherOutputStream.java b/libjava/classpath/javax/crypto/CipherOutputStream.java new file mode 100644 index 000000000..170feed47 --- /dev/null +++ b/libjava/classpath/javax/crypto/CipherOutputStream.java @@ -0,0 +1,154 @@ +/* CipherOutputStream.java -- Filters output through a cipher. + Copyright (C) 2004 Free Software Foundation, Inc. + +This file is 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, 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; see the file COPYING. If not, write to the +Free Software Foundation, Inc., 51 Franklin Street, 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 javax.crypto; + +import java.io.FilterOutputStream; +import java.io.IOException; +import java.io.OutputStream; + +/** + * A filtered output stream that transforms data written to it with a + * {@link Cipher} before sending it to the underlying output stream. + * + * @author Casey Marshall (csm@gnu.org) + */ +public class CipherOutputStream extends FilterOutputStream +{ + /** The underlying cipher. */ + private Cipher cipher; + + /** + * Create a new cipher output stream. The cipher argument must have already + * been initialized. + * + * @param out The sink for transformed data. + * @param cipher The cipher to transform data with. + */ + public CipherOutputStream(OutputStream out, Cipher cipher) + { + super(out); + this.cipher = (cipher != null) ? cipher : new NullCipher(); + } + + /** + * Create a cipher output stream with no cipher. + * + * @param out The sink for transformed data. + */ + protected CipherOutputStream(OutputStream out) + { + super(out); + } + + /** + * Close this output stream, and the sink output stream. + *

+ * This method will first invoke the {@link Cipher#doFinal()} method of the + * underlying {@link Cipher}, and writes the output of that method to the + * sink output stream. + * + * @throws IOException If an I/O error occurs, or if an error is caused by + * finalizing the transformation. + */ + public void close() throws IOException + { + try + { + out.write(cipher.doFinal()); + out.flush(); + out.close(); + } + catch (Exception cause) + { + IOException ioex = new IOException(String.valueOf(cause)); + ioex.initCause(cause); + throw ioex; + } + } + + /** + * Flush any pending output. + * + * @throws IOException If an I/O error occurs. + */ + public void flush() throws IOException + { + out.flush(); + } + + /** + * Write a single byte to the output stream. + * + * @param b The next byte. + * @throws IOException If an I/O error occurs, or if the underlying cipher is + * not in the correct state to transform data. + */ + public void write(int b) throws IOException + { + write(new byte[] { (byte) b }, 0, 1); + } + + /** + * Write a byte array to the output stream. + * + * @param buf The next bytes. + * @throws IOException If an I/O error occurs, or if the underlying cipher is + * not in the correct state to transform data. + */ + public void write(byte[] buf) throws IOException + { + write(buf, 0, buf.length); + } + + /** + * Write a portion of a byte array to the output stream. + * + * @param buf The next bytes. + * @param off The offset in the byte array to start. + * @param len The number of bytes to write. + * @throws IOException If an I/O error occurs, or if the underlying cipher is + * not in the correct state to transform data. + */ + public void write(byte[] buf, int off, int len) throws IOException + { + byte[] b = cipher.update(buf, off, len); + if (b != null) + out.write(b); + } +} -- cgit v1.2.3