| /* |
| * Copyright (c) 2001, 2003, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code 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 |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| package com.sun.jndi.ldap.sasl; |
| |
| import javax.security.sasl.Sasl; |
| import javax.security.sasl.SaslClient; |
| import javax.security.sasl.SaslException; |
| import java.io.IOException; |
| import java.io.FilterOutputStream; |
| import java.io.OutputStream; |
| |
| class SaslOutputStream extends FilterOutputStream { |
| private static final boolean debug = false; |
| |
| private byte[] lenBuf = new byte[4]; // buffer for storing length |
| private int rawSendSize = 65536; |
| private SaslClient sc; |
| |
| SaslOutputStream(SaslClient sc, OutputStream out) throws SaslException { |
| super(out); |
| this.sc = sc; |
| |
| if (debug) { |
| System.err.println("SaslOutputStream: " + out); |
| } |
| |
| String str = (String) sc.getNegotiatedProperty(Sasl.RAW_SEND_SIZE); |
| if (str != null) { |
| try { |
| rawSendSize = Integer.parseInt(str); |
| } catch (NumberFormatException e) { |
| throw new SaslException(Sasl.RAW_SEND_SIZE + |
| " property must be numeric string: " + str); |
| } |
| } |
| } |
| |
| // Override this method to call write(byte[], int, int) counterpart |
| // super.write(int) simply calls out.write(int) |
| |
| public void write(int b) throws IOException { |
| byte[] buffer = new byte[1]; |
| buffer[0] = (byte)b; |
| write(buffer, 0, 1); |
| } |
| |
| /** |
| * Override this method to "wrap" the outgoing buffer before |
| * writing it to the underlying output stream. |
| */ |
| public void write(byte[] buffer, int offset, int total) throws IOException { |
| int count; |
| byte[] wrappedToken, saslBuffer; |
| |
| // "Packetize" buffer to be within rawSendSize |
| if (debug) { |
| System.err.println("Total size: " + total); |
| } |
| |
| for (int i = 0; i < total; i += rawSendSize) { |
| |
| // Calculate length of current "packet" |
| count = (total - i) < rawSendSize ? (total - i) : rawSendSize; |
| |
| // Generate wrapped token |
| wrappedToken = sc.wrap(buffer, offset+i, count); |
| |
| // Write out length |
| intToNetworkByteOrder(wrappedToken.length, lenBuf, 0, 4); |
| |
| if (debug) { |
| System.err.println("sending size: " + wrappedToken.length); |
| } |
| out.write(lenBuf, 0, 4); |
| |
| // Write out wrapped token |
| out.write(wrappedToken, 0, wrappedToken.length); |
| } |
| } |
| |
| public void close() throws IOException { |
| SaslException save = null; |
| try { |
| sc.dispose(); // Dispose of SaslClient's state |
| } catch (SaslException e) { |
| // Save exception for throwing after closing 'in' |
| save = e; |
| } |
| super.close(); // Close underlying output stream |
| |
| if (save != null) { |
| throw save; |
| } |
| } |
| |
| // Copied from com.sun.security.sasl.util.SaslImpl |
| /** |
| * Encodes an integer into 4 bytes in network byte order in the buffer |
| * supplied. |
| */ |
| private static void intToNetworkByteOrder(int num, byte[] buf, int start, |
| int count) { |
| if (count > 4) { |
| throw new IllegalArgumentException("Cannot handle more than 4 bytes"); |
| } |
| |
| for (int i = count-1; i >= 0; i--) { |
| buf[start+i] = (byte)(num & 0xff); |
| num >>>= 8; |
| } |
| } |
| } |