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undefect. CWE-407 — 63 sites patched across 27 ecosystems

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Authors: russell@unturf.com · brackishbert@gmail.com · foxhop.net · TimeHexOn.com

Patches, unit tests, benchmarks, whitepaper, and outreach briefs.
Public domain — no copyright claimed. Use freely.
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russell@unturf.com 2026-03-26 17:11:57 -04:00
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test/jdk/java/net/IDN/UseSTD3ASCIIRules.java Normal file
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/*
* Copyright (c) 2013, 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 8023881
* @summary IDN.USE_STD3_ASCII_RULES option is too strict to use Unicode
* in IDN.toASCII
*/
import java.net.*;
public class UseSTD3ASCIIRules {
public static void main(String[] args) throws Exception {
// Per Section 4.1, RFC 3490, if the UseSTD3ASCIIRules flag is set,
// then perform these checks:
//
// (a) Verify the absence of non-LDH ASCII code points; that is, the
// absence of 0..2C, 2E..2F, 3A..40, 5B..60, and 7B..7F.
//
// (b) Verify the absence of leading and trailing hyphen-minus; that
// is, the absence of U+002D at the beginning and end of the
// sequence.
String[] illegalNames = {
"www.example.com-",
"-www.example.com",
"-www.example.com-",
"www.ex\u002Cmple.com",
"www.ex\u007Bmple.com",
"www.ex\u007Fmple.com"
};
String[] legalNames = {
"www.ex-ample.com",
"www.ex\u002Dmple.com", // www.ex-mple.com
"www.ex\u007Ample.com", // www.exzmple.com
"www.ex\u3042mple.com", // www.xn--exmple-j43e.com
"www.\u3042\u3044\u3046.com", // www.xn--l8jeg.com
"www.\u793A\u4F8B.com" // www.xn--fsq092h.com
};
for (String name : illegalNames) {
try {
System.out.println("Convering illegal IDN: " + name);
IDN.toASCII(name, IDN.USE_STD3_ASCII_RULES);
throw new Exception(
"Expected to get IllegalArgumentException for " + name);
} catch (IllegalArgumentException iae) {
// That's the right behavior.
}
}
for (String name : legalNames) {
System.out.println("Convering legal IDN: " + name);
System.out.println("\tThe ACE form is: " +
IDN.toASCII(name, IDN.USE_STD3_ASCII_RULES));
}
}
}