feat(jdk8): move files to new folder to avoid resources compiled.

jdkSrc/jdk8/sun/security/provider/certpath/IndexedCollectionCertStore.java

@@ -0,0 +1,424 @@
+/*
+ * Copyright (c) 2002, 2012, 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.  Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * 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.
+ */
+
+package sun.security.provider.certpath;
+
+import java.util.*;
+
+import java.security.InvalidAlgorithmParameterException;
+import java.security.cert.*;
+
+import javax.security.auth.x500.X500Principal;
+
+/**
+ * A <code>CertStore</code> that retrieves <code>Certificates</code> and
+ * <code>CRL</code>s from a <code>Collection</code>.
+ * <p>
+ * This implementation is functionally equivalent to CollectionCertStore
+ * with two differences:
+ * <ol>
+ * <li>Upon construction, the elements in the specified Collection are
+ * partially indexed. X509Certificates are indexed by subject, X509CRLs
+ * by issuer, non-X509 Certificates and CRLs are copied without indexing,
+ * other objects are ignored. This increases CertStore construction time
+ * but allows significant speedups for searches which specify the indexed
+ * attributes, in particular for large Collections (reduction from linear
+ * time to effectively constant time). Searches for non-indexed queries
+ * are as fast (or marginally faster) than for the standard
+ * CollectionCertStore. Certificate subjects and CRL issuers
+ * were found to be specified in most searches used internally by the
+ * CertPath provider. Additional attributes could indexed if there are
+ * queries that justify the effort.
+ *
+ * <li>Changes to the specified Collection after construction time are
+ * not detected and ignored. This is because there is no way to efficiently
+ * detect if a Collection has been modified, a full traversal would be
+ * required. That would degrade lookup performance to linear time and
+ * eliminated the benefit of indexing. We may fix this via the introduction
+ * of new public APIs in the future.
+ * </ol>
+ * <p>
+ * Before calling the {@link #engineGetCertificates engineGetCertificates} or
+ * {@link #engineGetCRLs engineGetCRLs} methods, the
+ * {@link #CollectionCertStore(CertStoreParameters)
+ * CollectionCertStore(CertStoreParameters)} constructor is called to
+ * create the <code>CertStore</code> and establish the
+ * <code>Collection</code> from which <code>Certificate</code>s and
+ * <code>CRL</code>s will be retrieved. If the specified
+ * <code>Collection</code> contains an object that is not a
+ * <code>Certificate</code> or <code>CRL</code>, that object will be
+ * ignored.
+ * <p>
+ * <b>Concurrent Access</b>
+ * <p>
+ * As described in the javadoc for <code>CertStoreSpi</code>, the
+ * <code>engineGetCertificates</code> and <code>engineGetCRLs</code> methods
+ * must be thread-safe. That is, multiple threads may concurrently
+ * invoke these methods on a single <code>CollectionCertStore</code>
+ * object (or more than one) with no ill effects.
+ * <p>
+ * This is achieved by requiring that the <code>Collection</code> passed to
+ * the {@link #CollectionCertStore(CertStoreParameters)
+ * CollectionCertStore(CertStoreParameters)} constructor (via the
+ * <code>CollectionCertStoreParameters</code> object) must have fail-fast
+ * iterators. Simultaneous modifications to the <code>Collection</code> can thus be
+ * detected and certificate or CRL retrieval can be retried. The fact that
+ * <code>Certificate</code>s and <code>CRL</code>s must be thread-safe is also
+ * essential.
+ *
+ * @see java.security.cert.CertStore
+ * @see CollectionCertStore
+ *
+ * @author Andreas Sterbenz
+ */
+public class IndexedCollectionCertStore extends CertStoreSpi {
+
+    /**
+     * Map X500Principal(subject) -> X509Certificate | List of X509Certificate
+     */
+    private Map<X500Principal, Object> certSubjects;
+    /**
+     * Map X500Principal(issuer) -> X509CRL | List of X509CRL
+     */
+    private Map<X500Principal, Object> crlIssuers;
+    /**
+     * Sets of non-X509 certificates and CRLs
+     */
+    private Set<Certificate> otherCertificates;
+    private Set<CRL> otherCRLs;
+
+    /**
+     * Creates a <code>CertStore</code> with the specified parameters.
+     * For this class, the parameters object must be an instance of
+     * <code>CollectionCertStoreParameters</code>.
+     *
+     * @param params the algorithm parameters
+     * @exception InvalidAlgorithmParameterException if params is not an
+     *   instance of <code>CollectionCertStoreParameters</code>
+     */
+    public IndexedCollectionCertStore(CertStoreParameters params)
+            throws InvalidAlgorithmParameterException {
+        super(params);
+        if (!(params instanceof CollectionCertStoreParameters)) {
+            throw new InvalidAlgorithmParameterException(
+                "parameters must be CollectionCertStoreParameters");
+        }
+        Collection<?> coll = ((CollectionCertStoreParameters)params).getCollection();
+        if (coll == null) {
+            throw new InvalidAlgorithmParameterException
+                                        ("Collection must not be null");
+        }
+        buildIndex(coll);
+    }
+
+    /**
+     * Index the specified Collection copying all references to Certificates
+     * and CRLs.
+     */
+    private void buildIndex(Collection<?> coll) {
+        certSubjects = new HashMap<X500Principal, Object>();
+        crlIssuers = new HashMap<X500Principal, Object>();
+        otherCertificates = null;
+        otherCRLs = null;
+        for (Object obj : coll) {
+            if (obj instanceof X509Certificate) {
+                indexCertificate((X509Certificate)obj);
+            } else if (obj instanceof X509CRL) {
+                indexCRL((X509CRL)obj);
+            } else if (obj instanceof Certificate) {
+                if (otherCertificates == null) {
+                    otherCertificates = new HashSet<Certificate>();
+                }
+                otherCertificates.add((Certificate)obj);
+            } else if (obj instanceof CRL) {
+                if (otherCRLs == null) {
+                    otherCRLs = new HashSet<CRL>();
+                }
+                otherCRLs.add((CRL)obj);
+            } else {
+                // ignore
+            }
+        }
+        if (otherCertificates == null) {
+            otherCertificates = Collections.<Certificate>emptySet();
+        }
+        if (otherCRLs == null) {
+            otherCRLs = Collections.<CRL>emptySet();
+        }
+    }
+
+    /**
+     * Add an X509Certificate to the index.
+     */
+    private void indexCertificate(X509Certificate cert) {
+        X500Principal subject = cert.getSubjectX500Principal();
+        Object oldEntry = certSubjects.put(subject, cert);
+        if (oldEntry != null) { // assume this is unlikely
+            if (oldEntry instanceof X509Certificate) {
+                if (cert.equals(oldEntry)) {
+                    return;
+                }
+                List<X509Certificate> list = new ArrayList<>(2);
+                list.add(cert);
+                list.add((X509Certificate)oldEntry);
+                certSubjects.put(subject, list);
+            } else {
+                @SuppressWarnings("unchecked") // See certSubjects javadoc.
+                List<X509Certificate> list = (List<X509Certificate>)oldEntry;
+                if (list.contains(cert) == false) {
+                    list.add(cert);
+                }
+                certSubjects.put(subject, list);
+            }
+        }
+    }
+
+    /**
+     * Add an X509CRL to the index.
+     */
+    private void indexCRL(X509CRL crl) {
+        X500Principal issuer = crl.getIssuerX500Principal();
+        Object oldEntry = crlIssuers.put(issuer, crl);
+        if (oldEntry != null) { // assume this is unlikely
+            if (oldEntry instanceof X509CRL) {
+                if (crl.equals(oldEntry)) {
+                    return;
+                }
+                List<X509CRL> list = new ArrayList<>(2);
+                list.add(crl);
+                list.add((X509CRL)oldEntry);
+                crlIssuers.put(issuer, list);
+            } else {
+                // See crlIssuers javadoc.
+                @SuppressWarnings("unchecked")
+                List<X509CRL> list = (List<X509CRL>)oldEntry;
+                if (list.contains(crl) == false) {
+                    list.add(crl);
+                }
+                crlIssuers.put(issuer, list);
+            }
+        }
+    }
+
+    /**
+     * Returns a <code>Collection</code> of <code>Certificate</code>s that
+     * match the specified selector. If no <code>Certificate</code>s
+     * match the selector, an empty <code>Collection</code> will be returned.
+     *
+     * @param selector a <code>CertSelector</code> used to select which
+     *  <code>Certificate</code>s should be returned. Specify <code>null</code>
+     *  to return all <code>Certificate</code>s.
+     * @return a <code>Collection</code> of <code>Certificate</code>s that
+     *         match the specified selector
+     * @throws CertStoreException if an exception occurs
+     */
+    @Override
+    public Collection<? extends Certificate> engineGetCertificates(CertSelector selector)
+            throws CertStoreException {
+
+        // no selector means match all
+        if (selector == null) {
+            Set<Certificate> matches = new HashSet<>();
+            matchX509Certs(new X509CertSelector(), matches);
+            matches.addAll(otherCertificates);
+            return matches;
+        }
+
+        if (selector instanceof X509CertSelector == false) {
+            Set<Certificate> matches = new HashSet<>();
+            matchX509Certs(selector, matches);
+            for (Certificate cert : otherCertificates) {
+                if (selector.match(cert)) {
+                    matches.add(cert);
+                }
+            }
+            return matches;
+        }
+
+        if (certSubjects.isEmpty()) {
+            return Collections.<X509Certificate>emptySet();
+        }
+        X509CertSelector x509Selector = (X509CertSelector)selector;
+        // see if the subject is specified
+        X500Principal subject;
+        X509Certificate matchCert = x509Selector.getCertificate();
+        if (matchCert != null) {
+            subject = matchCert.getSubjectX500Principal();
+        } else {
+            subject = x509Selector.getSubject();
+        }
+        if (subject != null) {
+            // yes, narrow down candidates to indexed possibilities
+            Object entry = certSubjects.get(subject);
+            if (entry == null) {
+                return Collections.<X509Certificate>emptySet();
+            }
+            if (entry instanceof X509Certificate) {
+                X509Certificate x509Entry = (X509Certificate)entry;
+                if (x509Selector.match(x509Entry)) {
+                    return Collections.singleton(x509Entry);
+                } else {
+                    return Collections.<X509Certificate>emptySet();
+                }
+            } else {
+                // See certSubjects javadoc.
+                @SuppressWarnings("unchecked")
+                List<X509Certificate> list = (List<X509Certificate>)entry;
+                Set<X509Certificate> matches = new HashSet<>(16);
+                for (X509Certificate cert : list) {
+                    if (x509Selector.match(cert)) {
+                        matches.add(cert);
+                    }
+                }
+                return matches;
+            }
+        }
+        // cannot use index, iterate all
+        Set<Certificate> matches = new HashSet<>(16);
+        matchX509Certs(x509Selector, matches);
+        return matches;
+    }
+
+    /**
+     * Iterate through all the X509Certificates and add matches to the
+     * collection.
+     */
+    private void matchX509Certs(CertSelector selector,
+        Collection<Certificate> matches) {
+
+        for (Object obj : certSubjects.values()) {
+            if (obj instanceof X509Certificate) {
+                X509Certificate cert = (X509Certificate)obj;
+                if (selector.match(cert)) {
+                    matches.add(cert);
+                }
+            } else {
+                // See certSubjects javadoc.
+                @SuppressWarnings("unchecked")
+                List<X509Certificate> list = (List<X509Certificate>)obj;
+                for (X509Certificate cert : list) {
+                    if (selector.match(cert)) {
+                        matches.add(cert);
+                    }
+                }
+            }
+        }
+    }
+
+    /**
+     * Returns a <code>Collection</code> of <code>CRL</code>s that
+     * match the specified selector. If no <code>CRL</code>s
+     * match the selector, an empty <code>Collection</code> will be returned.
+     *
+     * @param selector a <code>CRLSelector</code> used to select which
+     *  <code>CRL</code>s should be returned. Specify <code>null</code>
+     *  to return all <code>CRL</code>s.
+     * @return a <code>Collection</code> of <code>CRL</code>s that
+     *         match the specified selector
+     * @throws CertStoreException if an exception occurs
+     */
+    @Override
+    public Collection<CRL> engineGetCRLs(CRLSelector selector)
+            throws CertStoreException {
+
+        if (selector == null) {
+            Set<CRL> matches = new HashSet<>();
+            matchX509CRLs(new X509CRLSelector(), matches);
+            matches.addAll(otherCRLs);
+            return matches;
+        }
+
+        if (selector instanceof X509CRLSelector == false) {
+            Set<CRL> matches = new HashSet<>();
+            matchX509CRLs(selector, matches);
+            for (CRL crl : otherCRLs) {
+                if (selector.match(crl)) {
+                    matches.add(crl);
+                }
+            }
+            return matches;
+        }
+
+        if (crlIssuers.isEmpty()) {
+            return Collections.<CRL>emptySet();
+        }
+        X509CRLSelector x509Selector = (X509CRLSelector)selector;
+        // see if the issuer is specified
+        Collection<X500Principal> issuers = x509Selector.getIssuers();
+        if (issuers != null) {
+            HashSet<CRL> matches = new HashSet<>(16);
+            for (X500Principal issuer : issuers) {
+                Object entry = crlIssuers.get(issuer);
+                if (entry == null) {
+                    // empty
+                } else if (entry instanceof X509CRL) {
+                    X509CRL crl = (X509CRL)entry;
+                    if (x509Selector.match(crl)) {
+                        matches.add(crl);
+                    }
+                } else { // List
+                    // See crlIssuers javadoc.
+                    @SuppressWarnings("unchecked")
+                    List<X509CRL> list = (List<X509CRL>)entry;
+                    for (X509CRL crl : list) {
+                        if (x509Selector.match(crl)) {
+                            matches.add(crl);
+                        }
+                    }
+                }
+            }
+            return matches;
+        }
+        // cannot use index, iterate all
+        Set<CRL> matches = new HashSet<>(16);
+        matchX509CRLs(x509Selector, matches);
+        return matches;
+    }
+
+    /**
+     * Iterate through all the X509CRLs and add matches to the
+     * collection.
+     */
+    private void matchX509CRLs(CRLSelector selector, Collection<CRL> matches) {
+        for (Object obj : crlIssuers.values()) {
+            if (obj instanceof X509CRL) {
+                X509CRL crl = (X509CRL)obj;
+                if (selector.match(crl)) {
+                    matches.add(crl);
+                }
+            } else {
+                // See crlIssuers javadoc.
+                @SuppressWarnings("unchecked")
+                List<X509CRL> list = (List<X509CRL>)obj;
+                for (X509CRL crl : list) {
+                    if (selector.match(crl)) {
+                        matches.add(crl);
+                    }
+                }
+            }
+        }
+    }
+
+}