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⏎ java/security/cert/X509CRLSelector.java
/*
* Copyright (c) 2000, 2015, Oracle and/or its affiliates. All rights reserved.
* ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
*
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*/
package java.security.cert;
import java.io.IOException;
import java.math.BigInteger;
import java.util.*;
import javax.security.auth.x500.X500Principal;
import sun.security.util.Debug;
import sun.security.util.DerInputStream;
import sun.security.x509.CRLNumberExtension;
import sun.security.x509.X500Name;
/**
* A {@code CRLSelector} that selects {@code X509CRLs} that
* match all specified criteria. This class is particularly useful when
* selecting CRLs from a {@code CertStore} to check revocation status
* of a particular certificate.
* <p>
* When first constructed, an {@code X509CRLSelector} has no criteria
* enabled and each of the {@code get} methods return a default
* value ({@code null}). Therefore, the {@link #match match} method
* would return {@code true} for any {@code X509CRL}. Typically,
* several criteria are enabled (by calling {@link #setIssuers setIssuers}
* or {@link #setDateAndTime setDateAndTime}, for instance) and then the
* {@code X509CRLSelector} is passed to
* {@link CertStore#getCRLs CertStore.getCRLs} or some similar
* method.
* <p>
* Please refer to <a href="http://tools.ietf.org/html/rfc5280">RFC 5280:
* Internet X.509 Public Key Infrastructure Certificate and CRL Profile</a>
* for definitions of the X.509 CRL fields and extensions mentioned below.
* <p>
* <b>Concurrent Access</b>
* <p>
* Unless otherwise specified, the methods defined in this class are not
* thread-safe. Multiple threads that need to access a single
* object concurrently should synchronize amongst themselves and
* provide the necessary locking. Multiple threads each manipulating
* separate objects need not synchronize.
*
* @see CRLSelector
* @see X509CRL
*
* @since 1.4
* @author Steve Hanna
*/
public class X509CRLSelector implements CRLSelector {
static {
CertPathHelperImpl.initialize();
}
private static final Debug debug = Debug.getInstance("certpath");
private HashSet<Object> issuerNames;
private HashSet<X500Principal> issuerX500Principals;
private BigInteger minCRL;
private BigInteger maxCRL;
private Date dateAndTime;
private X509Certificate certChecking;
private long skew = 0;
/**
* Creates an {@code X509CRLSelector}. Initially, no criteria are set
* so any {@code X509CRL} will match.
*/
public X509CRLSelector() {}
/**
* Sets the issuerNames criterion. The issuer distinguished name in the
* {@code X509CRL} must match at least one of the specified
* distinguished names. If {@code null}, any issuer distinguished name
* will do.
* <p>
* This method allows the caller to specify, with a single method call,
* the complete set of issuer names which {@code X509CRLs} may contain.
* The specified value replaces the previous value for the issuerNames
* criterion.
* <p>
* The {@code names} parameter (if not {@code null}) is a
* {@code Collection} of {@code X500Principal}s.
* <p>
* Note that the {@code names} parameter can contain duplicate
* distinguished names, but they may be removed from the
* {@code Collection} of names returned by the
* {@link #getIssuers getIssuers} method.
* <p>
* Note that a copy is performed on the {@code Collection} to
* protect against subsequent modifications.
*
* @param issuers a {@code Collection} of X500Principals
* (or {@code null})
* @see #getIssuers
* @since 1.5
*/
public void setIssuers(Collection<X500Principal> issuers) {
if ((issuers == null) || issuers.isEmpty()) {
issuerNames = null;
issuerX500Principals = null;
} else {
// clone
issuerX500Principals = new HashSet<>(issuers);
issuerNames = new HashSet<>();
for (X500Principal p : issuerX500Principals) {
issuerNames.add(p.getEncoded());
}
}
}
/**
* <strong>Note:</strong> use {@linkplain #setIssuers(Collection)} instead
* or only specify the byte array form of distinguished names when using
* this method. See {@link #addIssuerName(String)} for more information.
* <p>
* Sets the issuerNames criterion. The issuer distinguished name in the
* {@code X509CRL} must match at least one of the specified
* distinguished names. If {@code null}, any issuer distinguished name
* will do.
* <p>
* This method allows the caller to specify, with a single method call,
* the complete set of issuer names which {@code X509CRLs} may contain.
* The specified value replaces the previous value for the issuerNames
* criterion.
* <p>
* The {@code names} parameter (if not {@code null}) is a
* {@code Collection} of names. Each name is a {@code String}
* or a byte array representing a distinguished name (in
* <a href="http://www.ietf.org/rfc/rfc2253.txt">RFC 2253</a> or
* ASN.1 DER encoded form, respectively). If {@code null} is supplied
* as the value for this argument, no issuerNames check will be performed.
* <p>
* Note that the {@code names} parameter can contain duplicate
* distinguished names, but they may be removed from the
* {@code Collection} of names returned by the
* {@link #getIssuerNames getIssuerNames} method.
* <p>
* If a name is specified as a byte array, it should contain a single DER
* encoded distinguished name, as defined in X.501. The ASN.1 notation for
* this structure is as follows.
* <pre>{@code
* Name ::= CHOICE {
* RDNSequence }
*
* RDNSequence ::= SEQUENCE OF RelativeDistinguishedName
*
* RelativeDistinguishedName ::=
* SET SIZE (1 .. MAX) OF AttributeTypeAndValue
*
* AttributeTypeAndValue ::= SEQUENCE {
* type AttributeType,
* value AttributeValue }
*
* AttributeType ::= OBJECT IDENTIFIER
*
* AttributeValue ::= ANY DEFINED BY AttributeType
* ....
* DirectoryString ::= CHOICE {
* teletexString TeletexString (SIZE (1..MAX)),
* printableString PrintableString (SIZE (1..MAX)),
* universalString UniversalString (SIZE (1..MAX)),
* utf8String UTF8String (SIZE (1.. MAX)),
* bmpString BMPString (SIZE (1..MAX)) }
* }</pre>
* <p>
* Note that a deep copy is performed on the {@code Collection} to
* protect against subsequent modifications.
*
* @param names a {@code Collection} of names (or {@code null})
* @throws IOException if a parsing error occurs
* @see #getIssuerNames
*/
public void setIssuerNames(Collection<?> names) throws IOException {
if (names == null || names.size() == 0) {
issuerNames = null;
issuerX500Principals = null;
} else {
HashSet<Object> tempNames = cloneAndCheckIssuerNames(names);
// Ensure that we either set both of these or neither
issuerX500Principals = parseIssuerNames(tempNames);
issuerNames = tempNames;
}
}
/**
* Adds a name to the issuerNames criterion. The issuer distinguished
* name in the {@code X509CRL} must match at least one of the specified
* distinguished names.
* <p>
* This method allows the caller to add a name to the set of issuer names
* which {@code X509CRLs} may contain. The specified name is added to
* any previous value for the issuerNames criterion.
* If the specified name is a duplicate, it may be ignored.
*
* @param issuer the issuer as X500Principal
* @since 1.5
*/
public void addIssuer(X500Principal issuer) {
addIssuerNameInternal(issuer.getEncoded(), issuer);
}
/**
* <strong>Denigrated</strong>, use
* {@linkplain #addIssuer(X500Principal)} or
* {@linkplain #addIssuerName(byte[])} instead. This method should not be
* relied on as it can fail to match some CRLs because of a loss of
* encoding information in the RFC 2253 String form of some distinguished
* names.
* <p>
* Adds a name to the issuerNames criterion. The issuer distinguished
* name in the {@code X509CRL} must match at least one of the specified
* distinguished names.
* <p>
* This method allows the caller to add a name to the set of issuer names
* which {@code X509CRLs} may contain. The specified name is added to
* any previous value for the issuerNames criterion.
* If the specified name is a duplicate, it may be ignored.
*
* @param name the name in RFC 2253 form
* @throws IOException if a parsing error occurs
*/
public void addIssuerName(String name) throws IOException {
addIssuerNameInternal(name, new X500Name(name).asX500Principal());
}
/**
* Adds a name to the issuerNames criterion. The issuer distinguished
* name in the {@code X509CRL} must match at least one of the specified
* distinguished names.
* <p>
* This method allows the caller to add a name to the set of issuer names
* which {@code X509CRLs} may contain. The specified name is added to
* any previous value for the issuerNames criterion. If the specified name
* is a duplicate, it may be ignored.
* If a name is specified as a byte array, it should contain a single DER
* encoded distinguished name, as defined in X.501. The ASN.1 notation for
* this structure is as follows.
* <p>
* The name is provided as a byte array. This byte array should contain
* a single DER encoded distinguished name, as defined in X.501. The ASN.1
* notation for this structure appears in the documentation for
* {@link #setIssuerNames setIssuerNames(Collection names)}.
* <p>
* Note that the byte array supplied here is cloned to protect against
* subsequent modifications.
*
* @param name a byte array containing the name in ASN.1 DER encoded form
* @throws IOException if a parsing error occurs
*/
public void addIssuerName(byte[] name) throws IOException {
// clone because byte arrays are modifiable
addIssuerNameInternal(name.clone(), new X500Name(name).asX500Principal());
}
/**
* A private method that adds a name (String or byte array) to the
* issuerNames criterion. The issuer distinguished
* name in the {@code X509CRL} must match at least one of the specified
* distinguished names.
*
* @param name the name in string or byte array form
* @param principal the name in X500Principal form
* @throws IOException if a parsing error occurs
*/
private void addIssuerNameInternal(Object name, X500Principal principal) {
if (issuerNames == null) {
issuerNames = new HashSet<>();
}
if (issuerX500Principals == null) {
issuerX500Principals = new HashSet<>();
}
issuerNames.add(name);
issuerX500Principals.add(principal);
}
/**
* Clone and check an argument of the form passed to
* setIssuerNames. Throw an IOException if the argument is malformed.
*
* @param names a {@code Collection} of names. Each entry is a
* String or a byte array (the name, in string or ASN.1
* DER encoded form, respectively). {@code null} is
* not an acceptable value.
* @return a deep copy of the specified {@code Collection}
* @throws IOException if a parsing error occurs
*/
private static HashSet<Object> cloneAndCheckIssuerNames(Collection<?> names)
throws IOException
{
HashSet<Object> namesCopy = new HashSet<>();
Iterator<?> i = names.iterator();
while (i.hasNext()) {
Object nameObject = i.next();
if (!(nameObject instanceof byte []) &&
!(nameObject instanceof String))
throw new IOException("name not byte array or String");
if (nameObject instanceof byte [])
namesCopy.add(((byte []) nameObject).clone());
else
namesCopy.add(nameObject);
}
return(namesCopy);
}
/**
* Clone an argument of the form passed to setIssuerNames.
* Throw a RuntimeException if the argument is malformed.
* <p>
* This method wraps cloneAndCheckIssuerNames, changing any IOException
* into a RuntimeException. This method should be used when the object being
* cloned has already been checked, so there should never be any exceptions.
*
* @param names a {@code Collection} of names. Each entry is a
* String or a byte array (the name, in string or ASN.1
* DER encoded form, respectively). {@code null} is
* not an acceptable value.
* @return a deep copy of the specified {@code Collection}
* @throws RuntimeException if a parsing error occurs
*/
private static HashSet<Object> cloneIssuerNames(Collection<Object> names) {
try {
return cloneAndCheckIssuerNames(names);
} catch (IOException ioe) {
throw new RuntimeException(ioe);
}
}
/**
* Parse an argument of the form passed to setIssuerNames,
* returning a Collection of issuerX500Principals.
* Throw an IOException if the argument is malformed.
*
* @param names a {@code Collection} of names. Each entry is a
* String or a byte array (the name, in string or ASN.1
* DER encoded form, respectively). <Code>Null</Code> is
* not an acceptable value.
* @return a HashSet of issuerX500Principals
* @throws IOException if a parsing error occurs
*/
private static HashSet<X500Principal> parseIssuerNames(Collection<Object> names)
throws IOException {
HashSet<X500Principal> x500Principals = new HashSet<>();
for (Iterator<Object> t = names.iterator(); t.hasNext(); ) {
Object nameObject = t.next();
if (nameObject instanceof String) {
x500Principals.add(new X500Name((String)nameObject).asX500Principal());
} else {
try {
x500Principals.add(new X500Principal((byte[])nameObject));
} catch (IllegalArgumentException e) {
throw (IOException)new IOException("Invalid name").initCause(e);
}
}
}
return x500Principals;
}
/**
* Sets the minCRLNumber criterion. The {@code X509CRL} must have a
* CRL number extension whose value is greater than or equal to the
* specified value. If {@code null}, no minCRLNumber check will be
* done.
*
* @param minCRL the minimum CRL number accepted (or {@code null})
*/
public void setMinCRLNumber(BigInteger minCRL) {
this.minCRL = minCRL;
}
/**
* Sets the maxCRLNumber criterion. The {@code X509CRL} must have a
* CRL number extension whose value is less than or equal to the
* specified value. If {@code null}, no maxCRLNumber check will be
* done.
*
* @param maxCRL the maximum CRL number accepted (or {@code null})
*/
public void setMaxCRLNumber(BigInteger maxCRL) {
this.maxCRL = maxCRL;
}
/**
* Sets the dateAndTime criterion. The specified date must be
* equal to or later than the value of the thisUpdate component
* of the {@code X509CRL} and earlier than the value of the
* nextUpdate component. There is no match if the {@code X509CRL}
* does not contain a nextUpdate component.
* If {@code null}, no dateAndTime check will be done.
* <p>
* Note that the {@code Date} supplied here is cloned to protect
* against subsequent modifications.
*
* @param dateAndTime the {@code Date} to match against
* (or {@code null})
* @see #getDateAndTime
*/
public void setDateAndTime(Date dateAndTime) {
if (dateAndTime == null)
this.dateAndTime = null;
else
this.dateAndTime = new Date(dateAndTime.getTime());
this.skew = 0;
}
/**
* Sets the dateAndTime criterion and allows for the specified clock skew
* (in milliseconds) when checking against the validity period of the CRL.
*/
void setDateAndTime(Date dateAndTime, long skew) {
this.dateAndTime =
(dateAndTime == null ? null : new Date(dateAndTime.getTime()));
this.skew = skew;
}
/**
* Sets the certificate being checked. This is not a criterion. Rather,
* it is optional information that may help a {@code CertStore}
* find CRLs that would be relevant when checking revocation for the
* specified certificate. If {@code null} is specified, then no
* such optional information is provided.
*
* @param cert the {@code X509Certificate} being checked
* (or {@code null})
* @see #getCertificateChecking
*/
public void setCertificateChecking(X509Certificate cert) {
certChecking = cert;
}
/**
* Returns the issuerNames criterion. The issuer distinguished
* name in the {@code X509CRL} must match at least one of the specified
* distinguished names. If the value returned is {@code null}, any
* issuer distinguished name will do.
* <p>
* If the value returned is not {@code null}, it is a
* unmodifiable {@code Collection} of {@code X500Principal}s.
*
* @return an unmodifiable {@code Collection} of names
* (or {@code null})
* @see #setIssuers
* @since 1.5
*/
public Collection<X500Principal> getIssuers() {
if (issuerX500Principals == null) {
return null;
}
return Collections.unmodifiableCollection(issuerX500Principals);
}
/**
* Returns a copy of the issuerNames criterion. The issuer distinguished
* name in the {@code X509CRL} must match at least one of the specified
* distinguished names. If the value returned is {@code null}, any
* issuer distinguished name will do.
* <p>
* If the value returned is not {@code null}, it is a
* {@code Collection} of names. Each name is a {@code String}
* or a byte array representing a distinguished name (in RFC 2253 or
* ASN.1 DER encoded form, respectively). Note that the
* {@code Collection} returned may contain duplicate names.
* <p>
* If a name is specified as a byte array, it should contain a single DER
* encoded distinguished name, as defined in X.501. The ASN.1 notation for
* this structure is given in the documentation for
* {@link #setIssuerNames setIssuerNames(Collection names)}.
* <p>
* Note that a deep copy is performed on the {@code Collection} to
* protect against subsequent modifications.
*
* @return a {@code Collection} of names (or {@code null})
* @see #setIssuerNames
*/
public Collection<Object> getIssuerNames() {
if (issuerNames == null) {
return null;
}
return cloneIssuerNames(issuerNames);
}
/**
* Returns the minCRLNumber criterion. The {@code X509CRL} must have a
* CRL number extension whose value is greater than or equal to the
* specified value. If {@code null}, no minCRLNumber check will be done.
*
* @return the minimum CRL number accepted (or {@code null})
*/
public BigInteger getMinCRL() {
return minCRL;
}
/**
* Returns the maxCRLNumber criterion. The {@code X509CRL} must have a
* CRL number extension whose value is less than or equal to the
* specified value. If {@code null}, no maxCRLNumber check will be
* done.
*
* @return the maximum CRL number accepted (or {@code null})
*/
public BigInteger getMaxCRL() {
return maxCRL;
}
/**
* Returns the dateAndTime criterion. The specified date must be
* equal to or later than the value of the thisUpdate component
* of the {@code X509CRL} and earlier than the value of the
* nextUpdate component. There is no match if the
* {@code X509CRL} does not contain a nextUpdate component.
* If {@code null}, no dateAndTime check will be done.
* <p>
* Note that the {@code Date} returned is cloned to protect against
* subsequent modifications.
*
* @return the {@code Date} to match against (or {@code null})
* @see #setDateAndTime
*/
public Date getDateAndTime() {
if (dateAndTime == null)
return null;
return (Date) dateAndTime.clone();
}
/**
* Returns the certificate being checked. This is not a criterion. Rather,
* it is optional information that may help a {@code CertStore}
* find CRLs that would be relevant when checking revocation for the
* specified certificate. If the value returned is {@code null}, then
* no such optional information is provided.
*
* @return the certificate being checked (or {@code null})
* @see #setCertificateChecking
*/
public X509Certificate getCertificateChecking() {
return certChecking;
}
/**
* Returns a printable representation of the {@code X509CRLSelector}.
*
* @return a {@code String} describing the contents of the
* {@code X509CRLSelector}.
*/
public String toString() {
StringBuilder sb = new StringBuilder();
sb.append("X509CRLSelector: [\n");
if (issuerNames != null) {
sb.append(" IssuerNames:\n");
Iterator<Object> i = issuerNames.iterator();
while (i.hasNext())
sb.append(" " + i.next() + "\n");
}
if (minCRL != null)
sb.append(" minCRLNumber: " + minCRL + "\n");
if (maxCRL != null)
sb.append(" maxCRLNumber: " + maxCRL + "\n");
if (dateAndTime != null)
sb.append(" dateAndTime: " + dateAndTime + "\n");
if (certChecking != null)
sb.append(" Certificate being checked: " + certChecking + "\n");
sb.append("]");
return sb.toString();
}
/**
* Decides whether a {@code CRL} should be selected.
*
* @param crl the {@code CRL} to be checked
* @return {@code true} if the {@code CRL} should be selected,
* {@code false} otherwise
*/
public boolean match(CRL crl) {
if (!(crl instanceof X509CRL)) {
return false;
}
X509CRL xcrl = (X509CRL)crl;
/* match on issuer name */
if (issuerNames != null) {
X500Principal issuer = xcrl.getIssuerX500Principal();
Iterator<X500Principal> i = issuerX500Principals.iterator();
boolean found = false;
while (!found && i.hasNext()) {
if (i.next().equals(issuer)) {
found = true;
}
}
if (!found) {
if (debug != null) {
debug.println("X509CRLSelector.match: issuer DNs "
+ "don't match");
}
return false;
}
}
if ((minCRL != null) || (maxCRL != null)) {
/* Get CRL number extension from CRL */
byte[] crlNumExtVal = xcrl.getExtensionValue("2.5.29.20");
if (crlNumExtVal == null) {
if (debug != null) {
debug.println("X509CRLSelector.match: no CRLNumber");
}
}
BigInteger crlNum;
try {
DerInputStream in = new DerInputStream(crlNumExtVal);
byte[] encoded = in.getOctetString();
CRLNumberExtension crlNumExt =
new CRLNumberExtension(Boolean.FALSE, encoded);
crlNum = crlNumExt.get(CRLNumberExtension.NUMBER);
} catch (IOException ex) {
if (debug != null) {
debug.println("X509CRLSelector.match: exception in "
+ "decoding CRL number");
}
return false;
}
/* match on minCRLNumber */
if (minCRL != null) {
if (crlNum.compareTo(minCRL) < 0) {
if (debug != null) {
debug.println("X509CRLSelector.match: CRLNumber too small");
}
return false;
}
}
/* match on maxCRLNumber */
if (maxCRL != null) {
if (crlNum.compareTo(maxCRL) > 0) {
if (debug != null) {
debug.println("X509CRLSelector.match: CRLNumber too large");
}
return false;
}
}
}
/* match on dateAndTime */
if (dateAndTime != null) {
Date crlThisUpdate = xcrl.getThisUpdate();
Date nextUpdate = xcrl.getNextUpdate();
if (nextUpdate == null) {
if (debug != null) {
debug.println("X509CRLSelector.match: nextUpdate null");
}
return false;
}
Date nowPlusSkew = dateAndTime;
Date nowMinusSkew = dateAndTime;
if (skew > 0) {
nowPlusSkew = new Date(dateAndTime.getTime() + skew);
nowMinusSkew = new Date(dateAndTime.getTime() - skew);
}
// Check that the test date is within the validity interval:
// [ thisUpdate - MAX_CLOCK_SKEW,
// nextUpdate + MAX_CLOCK_SKEW ]
if (nowMinusSkew.after(nextUpdate)
|| nowPlusSkew.before(crlThisUpdate)) {
if (debug != null) {
debug.println("X509CRLSelector.match: update out-of-range");
}
return false;
}
}
return true;
}
/**
* Returns a copy of this object.
*
* @return the copy
*/
public Object clone() {
try {
X509CRLSelector copy = (X509CRLSelector)super.clone();
if (issuerNames != null) {
copy.issuerNames =
new HashSet<>(issuerNames);
copy.issuerX500Principals =
new HashSet<>(issuerX500Principals);
}
return copy;
} catch (CloneNotSupportedException e) {
/* Cannot happen */
throw new InternalError(e.toString(), e);
}
}
}
⏎ java/security/cert/X509CRLSelector.java
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