/*
* Copyright ( c ) 2009 , 2019 , 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.
// We have 4 bytes
InputStream in = new ByteArrayInputStream(new byte [10 ]);
byte [] bs = IOUtils.readExactlyNBytes(in, 4 );
if (bs.length != 4 || in.available() != 6 ) {
throw new Exception("First read error" );
}
// But only 6 left
bs = in.readNBytes(10 );
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.readExactlyNBytes(in, Integer.MAX_VALUE);
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.readExactlyNBytes(in, -1 );
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.readExactlyNBytes(in, 20 );
throw new Exception("No exception on EOF" );
} catch (EOFException e) {
// OK
}
int bignum = 10 * 1024 * 1024 ;
bs = IOUtils.readExactlyNBytes(new SuperSlowStream(bignum), bignum);
if (bs.length != bignum) {
throw new Exception("Read returned small array" );
}
// Test DerValue
byte [] input = {0 x04, (byte )0 x84, 0 x40, 0 x00, 0 x42, 0 x46, 0 x4b};
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 ;
}
}
}
Messung V0.5 in Prozent C=91 H=88 G=89
¤ Dauer der Verarbeitung: 0.12 Sekunden
(vorverarbeitet am 2026-06-10)
¤
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