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8186143: keytool -ext option doesn't accept wildcards for DNS subject alternative names

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Reviewed-by: jnimeh, weijun, mullan
This commit is contained in:
Hai-May Chao 2020-03-18 09:23:57 +08:00 • committed by Weijun Wang
parent a147636157
commit 0c9f8e472f
3 changed files with 110 additions and 14 deletions
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20
src/java.base/share/classes/sun/security/tools/keytool/Main.java
View file

@ -1,5 +1,5 @@
/*
* Copyright (c) 1997, 2019, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 1997, 2020, 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
@ -4193,9 +4193,10 @@ public final class Main {
* Create a GeneralName object from known types
* @param t one of 5 known types
* @param v value
* @param exttype X.509 extension type
* @return which one
*/
private GeneralName createGeneralName(String t, String v)
private GeneralName createGeneralName(String t, String v, int exttype)
throws Exception {
GeneralNameInterface gn;
int p = oneOf(t, "EMAIL", "URI", "DNS", "IP", "OID");
@ -4206,7 +4207,14 @@ public final class Main {
switch (p) {
case 0: gn = new RFC822Name(v); break;
case 1: gn = new URIName(v); break;
case 2: gn = new DNSName(v); break;
case 2:
if (exttype == 3) {
// Allow wildcard only for SAN extension
gn = new DNSName(v, true);
} else {
gn = new DNSName(v);
}
break;
case 3: gn = new IPAddressName(v); break;
default: gn = new OIDName(v); break; //4
}
@ -4492,7 +4500,7 @@ public final class Main {
}
String t = item.substring(0, colonpos);
String v = item.substring(colonpos+1);
gnames.add(createGeneralName(t, v));
gnames.add(createGeneralName(t, v, exttype));
}
if (exttype == 3) {
setExt(result, new SubjectAlternativeNameExtension(
@ -4546,7 +4554,7 @@ public final class Main {
oid = new ObjectIdentifier("1.3.6.1.5.5.7.48." + p);
}
accessDescriptions.add(new AccessDescription(
oid, createGeneralName(t, v)));
oid, createGeneralName(t, v, exttype)));
}
if (exttype == 5) {
setExt(result, new SubjectInfoAccessExtension(accessDescriptions));
@ -4569,7 +4577,7 @@ public final class Main {
}
String t = item.substring(0, colonpos);
String v = item.substring(colonpos+1);
gnames.add(createGeneralName(t, v));
gnames.add(createGeneralName(t, v, exttype));
}
setExt(result, new CRLDistributionPointsExtension(
isCritical, Collections.singletonList(

39
src/java.base/share/classes/sun/security/x509/DNSName.java
View file

@ -1,5 +1,5 @@
/*
* Copyright (c) 1997, 2018, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 1997, 2020, 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
@ -69,9 +69,10 @@ public class DNSName implements GeneralNameInterface {
* Create the DNSName object with the specified name.
*
* @param name the DNSName.
* @throws IOException if the name is not a valid DNSName subjectAltName
* @param allowWildcard the flag for wildcard checking.
* @throws IOException if the name is not a valid DNSName
*/
public DNSName(String name) throws IOException {
public DNSName(String name, boolean allowWildcard) throws IOException {
if (name == null || name.isEmpty())
throw new IOException("DNSName must not be null or empty");
if (name.contains(" "))
@ -91,9 +92,26 @@ public class DNSName implements GeneralNameInterface {
if (endIndex - startIndex < 1)
throw new IOException("DNSName with empty components are not permitted");
// RFC 1123: DNSName components must begin with a letter or digit
if (alphaDigits.indexOf(name.charAt(startIndex)) < 0)
throw new IOException("DNSName components must begin with a letter or digit");
if (allowWildcard) {
// RFC 1123: DNSName components must begin with a letter or digit
// or RFC 4592: the first component of a DNSName can have only a wildcard
// character * (asterisk), i.e. *.example.com. Asterisks at other components
// will not be allowed as a wildcard.
if (alphaDigits.indexOf(name.charAt(startIndex)) < 0) {
// Checking to make sure the wildcard only appears in the first component,
// and it has to be at least 3-char long with the form of *.[alphaDigit]
if ((name.length() < 3) || (name.indexOf('*', 0) != 0) ||
(name.charAt(startIndex+1) != '.') ||
(alphaDigits.indexOf(name.charAt(startIndex+2)) < 0))
throw new IOException("DNSName components must begin with a letter, digit, "
+ "or the first component can have only a wildcard character *");
}
} else {
// RFC 1123: DNSName components must begin with a letter or digit
if (alphaDigits.indexOf(name.charAt(startIndex)) < 0)
throw new IOException("DNSName components must begin with a letter or digit");
}
//nonStartIndex: index for characters in the component beyond the first one
for (int nonStartIndex=startIndex+1; nonStartIndex < endIndex; nonStartIndex++) {
char x = name.charAt(nonStartIndex);
@ -104,6 +122,15 @@ public class DNSName implements GeneralNameInterface {
this.name = name;
}
/**
* Create the DNSName object with the specified name.
*
* @param name the DNSName.
* @throws IOException if the name is not a valid DNSName
*/
public DNSName(String name) throws IOException {
this(name, false);
}
/**
* Return the type of the GeneralName.