| /* SaslOutputStream.java -- |
| Copyright (C) 2003, 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.crypto.sasl; |
| |
| import gnu.java.security.Configuration; |
| import gnu.java.security.util.Util; |
| |
| import java.io.IOException; |
| import java.io.OutputStream; |
| import java.util.logging.Logger; |
| |
| import javax.security.sasl.Sasl; |
| import javax.security.sasl.SaslClient; |
| import javax.security.sasl.SaslServer; |
| |
| /** |
| * An output stream that uses either a {@link SaslClient} or a {@link SaslServer} |
| * to process the data through these entities' security layer filter(s). |
| */ |
| public class SaslOutputStream |
| extends OutputStream |
| { |
| private static final Logger log = Logger.getLogger(SaslOutputStream.class.getName()); |
| private SaslClient client; |
| private SaslServer server; |
| private int maxRawSendSize; |
| private OutputStream dest; |
| |
| public SaslOutputStream(SaslClient client, OutputStream dest) |
| throws IOException |
| { |
| super(); |
| |
| this.client = client; |
| String size = (String) client.getNegotiatedProperty(Sasl.RAW_SEND_SIZE); |
| maxRawSendSize = Integer.parseInt(size); |
| server = null; |
| this.dest = dest; |
| } |
| |
| public SaslOutputStream(SaslServer server, OutputStream dest) |
| throws IOException |
| { |
| super(); |
| |
| this.server = server; |
| String size = (String) server.getNegotiatedProperty(Sasl.RAW_SEND_SIZE); |
| maxRawSendSize = Integer.parseInt(size); |
| client = null; |
| this.dest = dest; |
| } |
| |
| public void close() throws IOException |
| { |
| dest.flush(); |
| dest.close(); |
| } |
| |
| public void flush() throws IOException |
| { |
| dest.flush(); |
| } |
| |
| /** |
| * When writing octets to the resulting stream, if a security layer has been |
| * negotiated, each piece of data written (by a single invocation of |
| * <code>write()</code>) will be encapsulated as a SASL buffer, as defined in |
| * RFC 2222, and then written to the underlying <i>dest</i> output stream. |
| */ |
| public void write(int b) throws IOException |
| { |
| write(new byte[] { (byte) b }); |
| } |
| |
| /** |
| * When writing octets to the resulting stream, if a security layer has been |
| * negotiated, each piece of data written (by a single invocation of |
| * <code>write()</code>) will be encapsulated as a SASL buffer, as defined in |
| * RFC 2222, and then written to the underlying <i>dest</i> output stream. |
| */ |
| public void write(byte[] b, int off, int len) throws IOException |
| { |
| if (Configuration.DEBUG) |
| log.entering(this.getClass().getName(), "write"); |
| if ((off < 0) || (off > b.length) || (len < 0) || ((off + len) > b.length) |
| || ((off + len) < 0)) |
| throw new IndexOutOfBoundsException("off=" + off + ", len=" + len |
| + ", b.length=" + b.length); |
| if (len == 0) |
| { |
| if (Configuration.DEBUG) |
| log.exiting(this.getClass().getName(), "write"); |
| return; |
| } |
| int chunckSize, length, chunck = 1; |
| byte[] output = null, result; |
| if (Configuration.DEBUG) |
| log.finer("About to wrap " + len + " byte(s)..."); |
| while (len > 0) |
| { |
| chunckSize = (len > maxRawSendSize ? maxRawSendSize : len); |
| if (Configuration.DEBUG) |
| { |
| log.finer("Outgoing buffer (before security) (hex): " |
| + Util.dumpString(b, off, chunckSize)); |
| log.finer("Outgoing buffer (before security) (str): \"" |
| + new String(b, off, chunckSize) + "\""); |
| } |
| if (client != null) |
| output = client.wrap(b, off, chunckSize); |
| else |
| output = server.wrap(b, off, chunckSize); |
| |
| if (Configuration.DEBUG) |
| { |
| log.finer("Outgoing buffer (after security) (hex): " |
| + Util.dumpString(output)); |
| log.finer("Outgoing buffer (after security) (str): \"" |
| + new String(output) + "\""); |
| } |
| length = output.length; |
| result = new byte[length + 4]; |
| result[0] = (byte)(length >>> 24); |
| result[1] = (byte)(length >>> 16); |
| result[2] = (byte)(length >>> 8); |
| result[3] = (byte) length; |
| System.arraycopy(output, 0, result, 4, length); |
| dest.write(result); |
| off += chunckSize; |
| len -= chunckSize; |
| if (Configuration.DEBUG) |
| log.finer("Wrapped chunck #" + chunck); |
| chunck++; |
| } |
| dest.flush(); |
| if (Configuration.DEBUG) |
| log.exiting(this.getClass().getName(), "write"); |
| } |
| } |