1 /* 2 * Copyright (c) 2009, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 24 /* 25 * @test 26 * @bug 6864911 27 * @summary ASN.1/DER input stream parser needs more work 28 */ 29 30 import java.io.*; 31 import sun.security.util.*; 32 import sun.misc.IOUtils; 33 34 public class BadValue { 35 36 public static void main(String[] args) throws Exception { 37 38 // Test IOUtils.readFully 39 40 // We have 4 bytes 41 InputStream in = new ByteArrayInputStream(new byte[10]); 42 byte[] bs = IOUtils.readFully(in, 4, true); 43 if (bs.length != 4 || in.available() != 6) { 44 throw new Exception("First read error"); 45 } 46 // But only 6 left 47 bs = IOUtils.readFully(in, 10, false); 48 if (bs.length != 6 || in.available() != 0) { 49 throw new Exception("Second read error"); 50 } 51 // MAX read as much as it can 52 in = new ByteArrayInputStream(new byte[10]); 53 bs = IOUtils.readFully(in, Integer.MAX_VALUE, true); 54 if (bs.length != 10 || in.available() != 0) { 55 throw new Exception("Second read error"); 56 } 57 // MAX ignore readAll 58 in = new ByteArrayInputStream(new byte[10]); 59 bs = IOUtils.readFully(in, Integer.MAX_VALUE, false); 60 if (bs.length != 10 || in.available() != 0) { 61 throw new Exception("Second read error"); 62 } 63 // 20>10, readAll means failure 64 in = new ByteArrayInputStream(new byte[10]); 65 try { 66 bs = IOUtils.readFully(in, 20, true); 67 throw new Exception("Third read error"); 68 } catch (EOFException e) { 69 // OK 70 } 71 int bignum = 10 * 1024 * 1024; 72 bs = IOUtils.readFully(new SuperSlowStream(bignum), -1, true); 73 if (bs.length != bignum) { 74 throw new Exception("Fourth read error"); 75 } 76 77 // Test DerValue 78 byte[] input = {0x04, (byte)0x84, 0x40, 0x00, 0x42, 0x46, 0x4b}; 79 try { 80 new DerValue(new ByteArrayInputStream(input)); 81 } catch (IOException ioe) { 82 // This is OK 83 } 84 } 85 } 86 87 /** 88 * An InputStream contains a given number of bytes, but only returns one byte 89 * per read. 90 */ 91 class SuperSlowStream extends InputStream { 92 private int p; 93 /** 94 * @param Initial capacity 95 */ 96 public SuperSlowStream(int capacity) { 97 p = capacity; 98 } 99 @Override 100 public int read() throws IOException { 101 if (p > 0) { 102 p--; 103 return 0; 104 } else { 105 return -1; 106 } 107 } 108 @Override 109 public int read(byte b[], int off, int len) throws IOException { 110 if (len == 0) return 0; 111 if (p > 0) { 112 p--; 113 b[off] = 0; 114 return 1; 115 } else { 116 return -1; 117 } 118 } 119 }