| /* DigestInputStream.java -- digesting input stream. |
| 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 java.io.FilterInputStream; |
| import java.io.InputStream; |
| import java.io.IOException; |
| |
| import gnu.java.security.hash.IMessageDigest; |
| |
| final class DigestInputStream extends FilterInputStream |
| { |
| |
| // Fields. |
| // ------------------------------------------------------------------------- |
| |
| private IMessageDigest md5, sha; |
| private boolean digesting; |
| |
| // Constructor. |
| // ------------------------------------------------------------------------- |
| |
| DigestInputStream(InputStream in, IMessageDigest md5, IMessageDigest sha) |
| { |
| super(in); |
| if (md5 == null || sha == null) |
| throw new NullPointerException(); |
| this.md5 = md5; |
| this.sha = sha; |
| digesting = true; |
| } |
| |
| // Instance methods. |
| // ------------------------------------------------------------------------- |
| |
| void setDigesting(boolean digesting) |
| { |
| this.digesting = digesting; |
| } |
| |
| public int read() throws IOException |
| { |
| int i = in.read(); |
| if (digesting && i != -1) |
| { |
| md5.update((byte) i); |
| sha.update((byte) i); |
| } |
| return i; |
| } |
| |
| public int read(byte[] buf) throws IOException |
| { |
| return read(buf, 0, buf.length); |
| } |
| |
| public int read(byte[] buf, int off, int len) throws IOException |
| { |
| int ret = in.read(buf, off, len); |
| if (digesting && ret != -1) |
| { |
| md5.update(buf, off, ret); |
| sha.update(buf, off, ret); |
| } |
| return ret; |
| } |
| } |