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8187443: Forest Consolidation: Move files to unified layout
Reviewed-by: darcy, ihse
This commit is contained in:
Erik Joelsson
parent
270fe13182
commit
3789983e89
56923 changed files with 3 additions and 15727 deletions
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@ -0,0 +1,620 @@
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/*
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* Copyright (c) 1997, 2015, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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||||
*
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||||
* 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. Oracle designates this
|
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* particular file as subject to the "Classpath" exception as provided
|
||||
* by Oracle in the LICENSE file that accompanied this code.
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*
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* 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).
|
||||
*
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||||
* 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.
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||||
*
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||||
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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||||
* questions.
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||||
*/
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package sun.security.x509;
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import java.io.IOException;
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import java.io.OutputStream;
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import java.security.cert.CertificateException;
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import java.security.cert.X509Certificate;
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import java.util.*;
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import javax.security.auth.x500.X500Principal;
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import sun.security.util.*;
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import sun.security.pkcs.PKCS9Attribute;
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/**
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* This class defines the Name Constraints Extension.
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* <p>
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* The name constraints extension provides permitted and excluded
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* subtrees that place restrictions on names that may be included within
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* a certificate issued by a given CA. Restrictions may apply to the
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* subject distinguished name or subject alternative names. Any name
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* matching a restriction in the excluded subtrees field is invalid
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* regardless of information appearing in the permitted subtrees.
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* <p>
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* The ASN.1 syntax for this is:
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* <pre>
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* NameConstraints ::= SEQUENCE {
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* permittedSubtrees [0] GeneralSubtrees OPTIONAL,
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* excludedSubtrees [1] GeneralSubtrees OPTIONAL
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* }
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* GeneralSubtrees ::= SEQUENCE SIZE (1..MAX) OF GeneralSubtree
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* </pre>
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*
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* @author Amit Kapoor
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* @author Hemma Prafullchandra
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* @see Extension
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* @see CertAttrSet
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*/
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public class NameConstraintsExtension extends Extension
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implements CertAttrSet<String>, Cloneable {
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/**
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* Identifier for this attribute, to be used with the
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* get, set, delete methods of Certificate, x509 type.
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*/
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public static final String IDENT = "x509.info.extensions.NameConstraints";
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/**
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* Attribute names.
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*/
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public static final String NAME = "NameConstraints";
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public static final String PERMITTED_SUBTREES = "permitted_subtrees";
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public static final String EXCLUDED_SUBTREES = "excluded_subtrees";
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// Private data members
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private static final byte TAG_PERMITTED = 0;
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private static final byte TAG_EXCLUDED = 1;
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private GeneralSubtrees permitted = null;
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private GeneralSubtrees excluded = null;
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private boolean hasMin;
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private boolean hasMax;
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private boolean minMaxValid = false;
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// Recalculate hasMin and hasMax flags.
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private void calcMinMax() throws IOException {
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hasMin = false;
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hasMax = false;
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if (excluded != null) {
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for (int i = 0; i < excluded.size(); i++) {
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GeneralSubtree subtree = excluded.get(i);
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if (subtree.getMinimum() != 0)
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hasMin = true;
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if (subtree.getMaximum() != -1)
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hasMax = true;
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}
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}
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if (permitted != null) {
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for (int i = 0; i < permitted.size(); i++) {
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GeneralSubtree subtree = permitted.get(i);
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if (subtree.getMinimum() != 0)
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hasMin = true;
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if (subtree.getMaximum() != -1)
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hasMax = true;
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}
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}
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minMaxValid = true;
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}
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// Encode this extension value.
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private void encodeThis() throws IOException {
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minMaxValid = false;
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if (permitted == null && excluded == null) {
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this.extensionValue = null;
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return;
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}
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DerOutputStream seq = new DerOutputStream();
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DerOutputStream tagged = new DerOutputStream();
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if (permitted != null) {
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DerOutputStream tmp = new DerOutputStream();
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permitted.encode(tmp);
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tagged.writeImplicit(DerValue.createTag(DerValue.TAG_CONTEXT,
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true, TAG_PERMITTED), tmp);
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}
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if (excluded != null) {
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DerOutputStream tmp = new DerOutputStream();
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excluded.encode(tmp);
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tagged.writeImplicit(DerValue.createTag(DerValue.TAG_CONTEXT,
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true, TAG_EXCLUDED), tmp);
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}
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seq.write(DerValue.tag_Sequence, tagged);
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this.extensionValue = seq.toByteArray();
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}
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/**
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* The default constructor for this class. Both parameters
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* are optional and can be set to null. The extension criticality
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* is set to true.
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*
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* @param permitted the permitted GeneralSubtrees (null for optional).
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* @param excluded the excluded GeneralSubtrees (null for optional).
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*/
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public NameConstraintsExtension(GeneralSubtrees permitted,
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GeneralSubtrees excluded)
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throws IOException {
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this.permitted = permitted;
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this.excluded = excluded;
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this.extensionId = PKIXExtensions.NameConstraints_Id;
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this.critical = true;
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encodeThis();
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}
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/**
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* Create the extension from the passed DER encoded value.
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*
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* @param critical true if the extension is to be treated as critical.
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* @param value an array of DER encoded bytes of the actual value.
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* @exception ClassCastException if value is not an array of bytes
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* @exception IOException on error.
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*/
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public NameConstraintsExtension(Boolean critical, Object value)
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throws IOException {
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this.extensionId = PKIXExtensions.NameConstraints_Id;
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this.critical = critical.booleanValue();
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this.extensionValue = (byte[]) value;
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DerValue val = new DerValue(this.extensionValue);
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if (val.tag != DerValue.tag_Sequence) {
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throw new IOException("Invalid encoding for" +
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" NameConstraintsExtension.");
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}
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// NB. this is always encoded with the IMPLICIT tag
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// The checks only make sense if we assume implicit tagging,
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// with explicit tagging the form is always constructed.
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// Note that all the fields in NameConstraints are defined as
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// being OPTIONAL, i.e., there could be an empty SEQUENCE, resulting
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// in val.data being null.
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if (val.data == null)
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return;
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while (val.data.available() != 0) {
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DerValue opt = val.data.getDerValue();
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if (opt.isContextSpecific(TAG_PERMITTED) && opt.isConstructed()) {
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if (permitted != null) {
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throw new IOException("Duplicate permitted " +
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"GeneralSubtrees in NameConstraintsExtension.");
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}
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opt.resetTag(DerValue.tag_Sequence);
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permitted = new GeneralSubtrees(opt);
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} else if (opt.isContextSpecific(TAG_EXCLUDED) &&
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opt.isConstructed()) {
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if (excluded != null) {
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throw new IOException("Duplicate excluded " +
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"GeneralSubtrees in NameConstraintsExtension.");
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}
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opt.resetTag(DerValue.tag_Sequence);
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excluded = new GeneralSubtrees(opt);
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} else
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throw new IOException("Invalid encoding of " +
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"NameConstraintsExtension.");
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}
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minMaxValid = false;
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}
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/**
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* Return the printable string.
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*/
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public String toString() {
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StringBuilder sb = new StringBuilder();
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sb.append(super.toString())
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.append("NameConstraints: [");
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if (permitted != null) {
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sb.append("\n Permitted:")
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.append(permitted);
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}
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if (excluded != null) {
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sb.append("\n Excluded:")
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.append(excluded);
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}
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sb.append(" ]\n");
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return sb.toString();
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}
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/**
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* Write the extension to the OutputStream.
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*
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* @param out the OutputStream to write the extension to.
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* @exception IOException on encoding errors.
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*/
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public void encode(OutputStream out) throws IOException {
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DerOutputStream tmp = new DerOutputStream();
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if (this.extensionValue == null) {
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this.extensionId = PKIXExtensions.NameConstraints_Id;
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this.critical = true;
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encodeThis();
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}
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super.encode(tmp);
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out.write(tmp.toByteArray());
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}
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/**
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* Set the attribute value.
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*/
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public void set(String name, Object obj) throws IOException {
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if (name.equalsIgnoreCase(PERMITTED_SUBTREES)) {
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if (!(obj instanceof GeneralSubtrees)) {
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throw new IOException("Attribute value should be"
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+ " of type GeneralSubtrees.");
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}
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permitted = (GeneralSubtrees)obj;
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} else if (name.equalsIgnoreCase(EXCLUDED_SUBTREES)) {
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if (!(obj instanceof GeneralSubtrees)) {
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throw new IOException("Attribute value should be "
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+ "of type GeneralSubtrees.");
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}
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excluded = (GeneralSubtrees)obj;
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} else {
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throw new IOException("Attribute name not recognized by " +
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"CertAttrSet:NameConstraintsExtension.");
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}
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encodeThis();
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}
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/**
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* Get the attribute value.
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*/
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public GeneralSubtrees get(String name) throws IOException {
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if (name.equalsIgnoreCase(PERMITTED_SUBTREES)) {
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return (permitted);
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} else if (name.equalsIgnoreCase(EXCLUDED_SUBTREES)) {
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return (excluded);
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} else {
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throw new IOException("Attribute name not recognized by " +
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"CertAttrSet:NameConstraintsExtension.");
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}
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}
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/**
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* Delete the attribute value.
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*/
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public void delete(String name) throws IOException {
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if (name.equalsIgnoreCase(PERMITTED_SUBTREES)) {
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permitted = null;
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} else if (name.equalsIgnoreCase(EXCLUDED_SUBTREES)) {
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excluded = null;
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} else {
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throw new IOException("Attribute name not recognized by " +
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"CertAttrSet:NameConstraintsExtension.");
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}
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encodeThis();
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}
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/**
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* Return an enumeration of names of attributes existing within this
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* attribute.
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*/
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public Enumeration<String> getElements() {
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AttributeNameEnumeration elements = new AttributeNameEnumeration();
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elements.addElement(PERMITTED_SUBTREES);
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elements.addElement(EXCLUDED_SUBTREES);
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return (elements.elements());
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}
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/**
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* Return the name of this attribute.
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*/
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public String getName() {
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return (NAME);
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}
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/**
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* Merge additional name constraints with existing ones.
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* This function is used in certification path processing
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* to accumulate name constraints from successive certificates
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* in the path. Note that NameConstraints can never be
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* expanded by a merge, just remain constant or become more
|
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* limiting.
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* <p>
|
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* IETF RFC2459 specifies the processing of Name Constraints as
|
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* follows:
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* <p>
|
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* (j) If permittedSubtrees is present in the certificate, set the
|
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* constrained subtrees state variable to the intersection of its
|
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* previous value and the value indicated in the extension field.
|
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* <p>
|
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* (k) If excludedSubtrees is present in the certificate, set the
|
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* excluded subtrees state variable to the union of its previous
|
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* value and the value indicated in the extension field.
|
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*
|
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* @param newConstraints additional NameConstraints to be applied
|
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* @throws IOException on error
|
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*/
|
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public void merge(NameConstraintsExtension newConstraints)
|
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throws IOException {
|
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|
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if (newConstraints == null) {
|
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// absence of any explicit constraints implies unconstrained
|
||||
return;
|
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}
|
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|
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/*
|
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* If excludedSubtrees is present in the certificate, set the
|
||||
* excluded subtrees state variable to the union of its previous
|
||||
* value and the value indicated in the extension field.
|
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*/
|
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|
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GeneralSubtrees newExcluded = newConstraints.get(EXCLUDED_SUBTREES);
|
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if (excluded == null) {
|
||||
excluded = (newExcluded != null) ?
|
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(GeneralSubtrees)newExcluded.clone() : null;
|
||||
} else {
|
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if (newExcluded != null) {
|
||||
// Merge new excluded with current excluded (union)
|
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excluded.union(newExcluded);
|
||||
}
|
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}
|
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|
||||
/*
|
||||
* If permittedSubtrees is present in the certificate, set the
|
||||
* constrained subtrees state variable to the intersection of its
|
||||
* previous value and the value indicated in the extension field.
|
||||
*/
|
||||
|
||||
GeneralSubtrees newPermitted = newConstraints.get(PERMITTED_SUBTREES);
|
||||
if (permitted == null) {
|
||||
permitted = (newPermitted != null) ?
|
||||
(GeneralSubtrees)newPermitted.clone() : null;
|
||||
} else {
|
||||
if (newPermitted != null) {
|
||||
// Merge new permitted with current permitted (intersection)
|
||||
newExcluded = permitted.intersect(newPermitted);
|
||||
|
||||
// Merge new excluded subtrees to current excluded (union)
|
||||
if (newExcluded != null) {
|
||||
if (excluded != null) {
|
||||
excluded.union(newExcluded);
|
||||
} else {
|
||||
excluded = (GeneralSubtrees)newExcluded.clone();
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// Optional optimization: remove permitted subtrees that are excluded.
|
||||
// This is not necessary for algorithm correctness, but it makes
|
||||
// subsequent operations on the NameConstraints faster and require
|
||||
// less space.
|
||||
if (permitted != null) {
|
||||
permitted.reduce(excluded);
|
||||
}
|
||||
|
||||
// The NameConstraints have been changed, so re-encode them. Methods in
|
||||
// this class assume that the encodings have already been done.
|
||||
encodeThis();
|
||||
|
||||
}
|
||||
|
||||
/**
|
||||
* check whether a certificate conforms to these NameConstraints.
|
||||
* This involves verifying that the subject name and subjectAltName
|
||||
* extension (critical or noncritical) is consistent with the permitted
|
||||
* subtrees state variables. Also verify that the subject name and
|
||||
* subjectAltName extension (critical or noncritical) is consistent with
|
||||
* the excluded subtrees state variables.
|
||||
*
|
||||
* @param cert X509Certificate to be verified
|
||||
* @return true if certificate verifies successfully
|
||||
* @throws IOException on error
|
||||
*/
|
||||
public boolean verify(X509Certificate cert) throws IOException {
|
||||
|
||||
if (cert == null) {
|
||||
throw new IOException("Certificate is null");
|
||||
}
|
||||
|
||||
// Calculate hasMin and hasMax booleans (if necessary)
|
||||
if (!minMaxValid) {
|
||||
calcMinMax();
|
||||
}
|
||||
|
||||
if (hasMin) {
|
||||
throw new IOException("Non-zero minimum BaseDistance in"
|
||||
+ " name constraints not supported");
|
||||
}
|
||||
|
||||
if (hasMax) {
|
||||
throw new IOException("Maximum BaseDistance in"
|
||||
+ " name constraints not supported");
|
||||
}
|
||||
|
||||
X500Principal subjectPrincipal = cert.getSubjectX500Principal();
|
||||
X500Name subject = X500Name.asX500Name(subjectPrincipal);
|
||||
|
||||
if (subject.isEmpty() == false) {
|
||||
if (verify(subject) == false) {
|
||||
return false;
|
||||
}
|
||||
}
|
||||
|
||||
GeneralNames altNames = null;
|
||||
// extract altNames
|
||||
try {
|
||||
// extract extensions, if any, from certInfo
|
||||
// following returns null if certificate contains no extensions
|
||||
X509CertImpl certImpl = X509CertImpl.toImpl(cert);
|
||||
SubjectAlternativeNameExtension altNameExt =
|
||||
certImpl.getSubjectAlternativeNameExtension();
|
||||
if (altNameExt != null) {
|
||||
// extract altNames from extension; this call does not
|
||||
// return an IOException on null altnames
|
||||
altNames = altNameExt.get(
|
||||
SubjectAlternativeNameExtension.SUBJECT_NAME);
|
||||
}
|
||||
} catch (CertificateException ce) {
|
||||
throw new IOException("Unable to extract extensions from " +
|
||||
"certificate: " + ce.getMessage());
|
||||
}
|
||||
|
||||
// If there are no subjectAlternativeNames, perform the special-case
|
||||
// check where if the subjectName contains any EMAILADDRESS
|
||||
// attributes, they must be checked against RFC822 constraints.
|
||||
// If that passes, we're fine.
|
||||
if (altNames == null) {
|
||||
return verifyRFC822SpecialCase(subject);
|
||||
}
|
||||
|
||||
// verify each subjectAltName
|
||||
for (int i = 0; i < altNames.size(); i++) {
|
||||
GeneralNameInterface altGNI = altNames.get(i).getName();
|
||||
if (!verify(altGNI)) {
|
||||
return false;
|
||||
}
|
||||
}
|
||||
|
||||
// All tests passed.
|
||||
return true;
|
||||
}
|
||||
|
||||
/**
|
||||
* check whether a name conforms to these NameConstraints.
|
||||
* This involves verifying that the name is consistent with the
|
||||
* permitted and excluded subtrees variables.
|
||||
*
|
||||
* @param name GeneralNameInterface name to be verified
|
||||
* @return true if certificate verifies successfully
|
||||
* @throws IOException on error
|
||||
*/
|
||||
public boolean verify(GeneralNameInterface name) throws IOException {
|
||||
if (name == null) {
|
||||
throw new IOException("name is null");
|
||||
}
|
||||
|
||||
// Verify that the name is consistent with the excluded subtrees
|
||||
if (excluded != null && excluded.size() > 0) {
|
||||
|
||||
for (int i = 0; i < excluded.size(); i++) {
|
||||
GeneralSubtree gs = excluded.get(i);
|
||||
if (gs == null)
|
||||
continue;
|
||||
GeneralName gn = gs.getName();
|
||||
if (gn == null)
|
||||
continue;
|
||||
GeneralNameInterface exName = gn.getName();
|
||||
if (exName == null)
|
||||
continue;
|
||||
|
||||
// if name matches or narrows any excluded subtree,
|
||||
// return false
|
||||
switch (exName.constrains(name)) {
|
||||
case GeneralNameInterface.NAME_DIFF_TYPE:
|
||||
case GeneralNameInterface.NAME_WIDENS: // name widens excluded
|
||||
case GeneralNameInterface.NAME_SAME_TYPE:
|
||||
break;
|
||||
case GeneralNameInterface.NAME_MATCH:
|
||||
case GeneralNameInterface.NAME_NARROWS: // subject name excluded
|
||||
return false;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// Verify that the name is consistent with the permitted subtrees
|
||||
if (permitted != null && permitted.size() > 0) {
|
||||
|
||||
boolean sameType = false;
|
||||
|
||||
for (int i = 0; i < permitted.size(); i++) {
|
||||
GeneralSubtree gs = permitted.get(i);
|
||||
if (gs == null)
|
||||
continue;
|
||||
GeneralName gn = gs.getName();
|
||||
if (gn == null)
|
||||
continue;
|
||||
GeneralNameInterface perName = gn.getName();
|
||||
if (perName == null)
|
||||
continue;
|
||||
|
||||
// if Name matches any type in permitted,
|
||||
// and Name does not match or narrow some permitted subtree,
|
||||
// return false
|
||||
switch (perName.constrains(name)) {
|
||||
case GeneralNameInterface.NAME_DIFF_TYPE:
|
||||
continue; // continue checking other permitted names
|
||||
case GeneralNameInterface.NAME_WIDENS: // name widens permitted
|
||||
case GeneralNameInterface.NAME_SAME_TYPE:
|
||||
sameType = true;
|
||||
continue; // continue to look for a match or narrow
|
||||
case GeneralNameInterface.NAME_MATCH:
|
||||
case GeneralNameInterface.NAME_NARROWS:
|
||||
// name narrows permitted
|
||||
return true; // name is definitely OK, so break out of loop
|
||||
}
|
||||
}
|
||||
if (sameType) {
|
||||
return false;
|
||||
}
|
||||
}
|
||||
return true;
|
||||
}
|
||||
|
||||
/**
|
||||
* Perform the RFC 822 special case check. We have a certificate
|
||||
* that does not contain any subject alternative names. Check that
|
||||
* any EMAILADDRESS attributes in its subject name conform to these
|
||||
* NameConstraints.
|
||||
*
|
||||
* @param subject the certificate's subject name
|
||||
* @return true if certificate verifies successfully
|
||||
* @throws IOException on error
|
||||
*/
|
||||
public boolean verifyRFC822SpecialCase(X500Name subject) throws IOException {
|
||||
for (AVA ava : subject.allAvas()) {
|
||||
ObjectIdentifier attrOID = ava.getObjectIdentifier();
|
||||
if (attrOID.equals(PKCS9Attribute.EMAIL_ADDRESS_OID)) {
|
||||
String attrValue = ava.getValueString();
|
||||
if (attrValue != null) {
|
||||
RFC822Name emailName;
|
||||
try {
|
||||
emailName = new RFC822Name(attrValue);
|
||||
} catch (IOException ioe) {
|
||||
continue;
|
||||
}
|
||||
if (!verify(emailName)) {
|
||||
return(false);
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
return true;
|
||||
}
|
||||
|
||||
/**
|
||||
* Clone all objects that may be modified during certificate validation.
|
||||
*/
|
||||
public Object clone() {
|
||||
try {
|
||||
NameConstraintsExtension newNCE =
|
||||
(NameConstraintsExtension) super.clone();
|
||||
|
||||
if (permitted != null) {
|
||||
newNCE.permitted = (GeneralSubtrees) permitted.clone();
|
||||
}
|
||||
if (excluded != null) {
|
||||
newNCE.excluded = (GeneralSubtrees) excluded.clone();
|
||||
}
|
||||
return newNCE;
|
||||
} catch (CloneNotSupportedException cnsee) {
|
||||
throw new RuntimeException("CloneNotSupportedException while " +
|
||||
"cloning NameConstraintsException. This should never happen.");
|
||||
}
|
||||
}
|
||||
}
|
||||
Loading…
Add table
Add a link
Reference in a new issue