| /* |
| * Copyright (c) 2009, 2017 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. |
| * |
| * 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. |
| */ |
| |
| /* |
| * @test |
| * @bug 6864911 |
| * @summary ASN.1/DER input stream parser needs more work |
| * @modules java.base/sun.security.util |
| */ |
| |
| import java.io.*; |
| import sun.security.util.*; |
| |
| public class BadValue { |
| |
| public static void main(String[] args) throws Exception { |
| |
| // Test IOUtils.readFully |
| |
| // We have 4 bytes |
| InputStream in = new ByteArrayInputStream(new byte[10]); |
| byte[] bs = IOUtils.readFully(in, 4, true); |
| if (bs.length != 4 || in.available() != 6) { |
| throw new Exception("First read error"); |
| } |
| // But only 6 left |
| bs = IOUtils.readFully(in, 10, false); |
| if (bs.length != 6 || in.available() != 0) { |
| throw new Exception("Second read error"); |
| } |
| // MAX length results in exception |
| in = new ByteArrayInputStream(new byte[10]); |
| try { |
| bs = IOUtils.readFully(in, Integer.MAX_VALUE, true); |
| throw new Exception("No exception on MAX_VALUE length"); |
| } catch (EOFException ex) { |
| // this is expected |
| } catch (IOException ex) { |
| throw ex; |
| } |
| // -1 length results in exception |
| in = new ByteArrayInputStream(new byte[10]); |
| try { |
| bs = IOUtils.readFully(in, -1, true); |
| throw new Exception("No exception on -1 length"); |
| } catch (IOException ex) { |
| // this is expected |
| } |
| |
| // 20>10, readAll means failure |
| in = new ByteArrayInputStream(new byte[10]); |
| try { |
| bs = IOUtils.readFully(in, 20, true); |
| throw new Exception("No exception on EOF"); |
| } catch (EOFException e) { |
| // OK |
| } |
| int bignum = 10 * 1024 * 1024; |
| bs = IOUtils.readFully(new SuperSlowStream(bignum), bignum, true); |
| if (bs.length != bignum) { |
| throw new Exception("Read returned small array"); |
| } |
| |
| // Test DerValue |
| byte[] input = {0x04, (byte)0x84, 0x40, 0x00, 0x42, 0x46, 0x4b}; |
| try { |
| new DerValue(new ByteArrayInputStream(input)); |
| } catch (IOException ioe) { |
| // This is OK |
| } |
| } |
| } |
| |
| /** |
| * An InputStream contains a given number of bytes, but only returns one byte |
| * per read. |
| */ |
| class SuperSlowStream extends InputStream { |
| private int p; |
| /** |
| * @param Initial capacity |
| */ |
| public SuperSlowStream(int capacity) { |
| p = capacity; |
| } |
| @Override |
| public int read() throws IOException { |
| if (p > 0) { |
| p--; |
| return 0; |
| } else { |
| return -1; |
| } |
| } |
| @Override |
| public int read(byte b[], int off, int len) throws IOException { |
| if (len == 0) return 0; |
| if (p > 0) { |
| p--; |
| b[off] = 0; |
| return 1; |
| } else { |
| return -1; |
| } |
| } |
| } |