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Diffstat (limited to 'libjava/classpath/gnu/javax/crypto/sasl/SaslOutputStream.java')
| -rw-r--r-- | libjava/classpath/gnu/javax/crypto/sasl/SaslOutputStream.java | 218 |
1 files changed, 218 insertions, 0 deletions
diff --git a/libjava/classpath/gnu/javax/crypto/sasl/SaslOutputStream.java b/libjava/classpath/gnu/javax/crypto/sasl/SaslOutputStream.java new file mode 100644 index 00000000000..6997201377a --- /dev/null +++ b/libjava/classpath/gnu/javax/crypto/sasl/SaslOutputStream.java @@ -0,0 +1,218 @@ +/* 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.util.Util; + +import java.io.OutputStream; +import java.io.IOException; +import java.io.PrintWriter; + +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 +{ + + // Debugging methods and variables + // ------------------------------------------------------------------------- + + private static final String NAME = "SaslOutputStream"; + + // private static final String ERROR = "ERROR"; + // private static final String WARN = " WARN"; + // private static final String INFO = " INFO"; + private static final String TRACE = "DEBUG"; + + private static final boolean DEBUG = true; + + private static final int debuglevel = 3; + + private static final PrintWriter err = new PrintWriter(System.out, true); + + private static void debug(String level, Object obj) + { + err.println("[" + level + "] " + NAME + ": " + String.valueOf(obj)); + } + + // Constants and variables + // ------------------------------------------------------------------------- + + private SaslClient client; + + private SaslServer server; + + private int maxRawSendSize; + + private OutputStream dest; + + // Constructor(s) + // ------------------------------------------------------------------------- + + public SaslOutputStream(SaslClient client, OutputStream dest) + throws IOException + { + super(); + + this.client = client; + maxRawSendSize = Integer.parseInt((String) client.getNegotiatedProperty(Sasl.RAW_SEND_SIZE)); + server = null; + this.dest = dest; + } + + public SaslOutputStream(SaslServer server, OutputStream dest) + throws IOException + { + super(); + + this.server = server; + maxRawSendSize = Integer.parseInt((String) server.getNegotiatedProperty(Sasl.RAW_SEND_SIZE)); + client = null; + this.dest = dest; + } + + // Class methods + // ------------------------------------------------------------------------- + + // Overloaded java.io.OutputStream methods + // ------------------------------------------------------------------------- + + 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 (b == null) + { + throw new NullPointerException("b"); + } + if ((off < 0) || (off > b.length) || (len < 0) || ((off + len) > b.length) + || ((off + len) < 0)) + { + throw new IndexOutOfBoundsException("off=" + String.valueOf(off) + + ", len=" + String.valueOf(len) + + ", b.length=" + + String.valueOf(b.length)); + } + if (len == 0) + { + return; + } + if (DEBUG && debuglevel > 8) + debug(TRACE, "==> write()"); + + int chunckSize, length, chunck = 1; + byte[] output = null, result; + if (DEBUG && debuglevel > 6) + debug(TRACE, "About to wrap " + String.valueOf(len) + " byte(s)..."); + while (len > 0) + { + chunckSize = (len > maxRawSendSize ? maxRawSendSize : len); + + if (DEBUG && debuglevel > 6) + debug(TRACE, "Outgoing buffer (before security) (hex): " + + Util.dumpString(b, off, chunckSize)); + if (DEBUG && debuglevel > 6) + debug(TRACE, "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 (DEBUG && debuglevel > 6) + debug(TRACE, "Outgoing buffer (after security) (hex): " + + Util.dumpString(output)); + if (DEBUG && debuglevel > 6) + debug(TRACE, "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 (DEBUG && debuglevel > 6) + debug(TRACE, "Wrapped chunck #" + String.valueOf(chunck)); + chunck++; + } + + dest.flush(); + if (DEBUG && debuglevel > 8) + debug(TRACE, "<== write()"); + } +}
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