01: /*
02: * <copyright>
03: *
04: * Copyright 1997-2004 BBNT Solutions, LLC
05: * under sponsorship of the Defense Advanced Research Projects
06: * Agency (DARPA).
07: *
08: * You can redistribute this software and/or modify it under the
09: * terms of the Cougaar Open Source License as published on the
10: * Cougaar Open Source Website (www.cougaar.org).
11: *
12: * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
13: * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
14: * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
15: * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
16: * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
17: * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
18: * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
19: * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
20: * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
21: * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
22: * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
23: *
24: * </copyright>
25: */
26:
27: package org.cougaar.core.persist;
28:
29: import java.io.FilterOutputStream;
30: import java.io.IOException;
31: import java.io.OutputStream;
32:
33: import org.cougaar.core.service.DataProtectionKey;
34:
35: /**
36: * A trivial {@link OutputStream} for testing the {@link
37: * org.cougaar.core.service.DataProtectionService}.
38: *
39: * @see DataProtectionInputStreamStub
40: */
41: public class DataProtectionOutputStreamStub extends FilterOutputStream {
42: private DataProtectionKeyStub keyStub;
43: // Our own buffer so we don't pollute the caller's buffers.
44: private byte[] buf = new byte[8192];
45:
46: public DataProtectionOutputStreamStub(OutputStream s,
47: DataProtectionKey keyStub) {
48: super (s);
49: this .keyStub = (DataProtectionKeyStub) keyStub;
50: }
51:
52: public void write(int b) throws IOException {
53: byte bb = (byte) b;
54: bb ^= keyStub.xor;
55: out.write(bb);
56: }
57:
58: public void write(byte[] b, int offset, int nb) throws IOException {
59: byte xor = keyStub.xor;
60: while (nb > 0) {
61: int tnb = Math.min(nb, buf.length);
62: for (int i = 0; i < tnb; i++) {
63: buf[i] = (byte) (b[offset + i] ^ xor);
64: }
65: out.write(buf, 0, tnb);
66: offset += tnb;
67: nb -= tnb;
68: }
69: }
70:
71: public void write(byte[] b) throws IOException {
72: write(b, 0, b.length);
73: }
74:
75: public String toString() {
76: return "DataProtectionOutputStreamStub key " + keyStub;
77: }
78: }
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