jdk/src/java.base/share/classes/sun/security/provider/certpath/ReverseState.java
changeset 29973 188affdeeed2
parent 29963 ac3f5a39d4ff
child 29974 9dea25b5ffba
--- a/jdk/src/java.base/share/classes/sun/security/provider/certpath/ReverseState.java	Wed Jul 05 20:29:22 2017 +0200
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,406 +0,0 @@
-/*
- * Copyright (c) 2000, 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.  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.io.IOException;
-import java.security.PublicKey;
-import java.security.cert.CertificateException;
-import java.security.cert.CertPathValidatorException;
-import java.security.cert.PKIXCertPathChecker;
-import java.security.cert.PKIXRevocationChecker;
-import java.security.cert.TrustAnchor;
-import java.security.cert.X509Certificate;
-import java.util.ArrayList;
-import java.util.HashSet;
-import java.util.List;
-import java.util.ListIterator;
-import java.util.Set;
-import javax.security.auth.x500.X500Principal;
-
-import sun.security.provider.certpath.PKIX.BuilderParams;
-import sun.security.util.Debug;
-import sun.security.x509.NameConstraintsExtension;
-import sun.security.x509.SubjectKeyIdentifierExtension;
-import sun.security.x509.X509CertImpl;
-
-/**
- * A specification of a reverse PKIX validation state
- * which is initialized by each build and updated each time a
- * certificate is added to the current path.
- * @since       1.4
- * @author      Sean Mullan
- * @author      Yassir Elley
- */
-
-class ReverseState implements State {
-
-    private static final Debug debug = Debug.getInstance("certpath");
-
-    /* The subject DN of the last cert in the path */
-    X500Principal subjectDN;
-
-    /* The subject public key of the last cert */
-    PublicKey pubKey;
-
-    /* The subject key identifier extension (if any) of the last cert */
-    SubjectKeyIdentifierExtension subjKeyId;
-
-    /* The PKIX constrained/excluded subtrees state variable */
-    NameConstraintsExtension nc;
-
-    /* The PKIX explicit policy, policy mapping, and inhibit_any-policy
-       state variables */
-    int explicitPolicy;
-    int policyMapping;
-    int inhibitAnyPolicy;
-    int certIndex;
-    PolicyNodeImpl rootNode;
-
-    /* The number of remaining CA certs which may follow in the path.
-     * -1: previous cert was an EE cert
-     * 0: only EE certs may follow.
-     * >0 and <Integer.MAX_VALUE:no more than this number of CA certs may follow
-     * Integer.MAX_VALUE: unlimited
-     */
-    int remainingCACerts;
-
-    /* The list of user-defined checkers retrieved from the PKIXParameters
-     * instance */
-    ArrayList<PKIXCertPathChecker> userCheckers;
-
-    /* Flag indicating if state is initial (path is just starting) */
-    private boolean init = true;
-
-    /* the checker used for revocation status */
-    RevocationChecker revChecker;
-
-    /* the algorithm checker */
-    AlgorithmChecker algorithmChecker;
-
-    /* the untrusted certificates checker */
-    UntrustedChecker untrustedChecker;
-
-    /* the trust anchor used to validate the path */
-    TrustAnchor trustAnchor;
-
-    /* Flag indicating if current cert can vouch for the CRL for
-     * the next cert
-     */
-    boolean crlSign = true;
-
-    /**
-     * Returns a boolean flag indicating if the state is initial
-     * (just starting)
-     *
-     * @return boolean flag indicating if the state is initial (just starting)
-     */
-    @Override
-    public boolean isInitial() {
-        return init;
-    }
-
-    /**
-     * Display state for debugging purposes
-     */
-    @Override
-    public String toString() {
-        StringBuilder sb = new StringBuilder();
-        sb.append("State [");
-        sb.append("\n  subjectDN of last cert: ").append(subjectDN);
-        sb.append("\n  subjectKeyIdentifier: ").append
-                 (String.valueOf(subjKeyId));
-        sb.append("\n  nameConstraints: ").append(String.valueOf(nc));
-        sb.append("\n  certIndex: ").append(certIndex);
-        sb.append("\n  explicitPolicy: ").append(explicitPolicy);
-        sb.append("\n  policyMapping:  ").append(policyMapping);
-        sb.append("\n  inhibitAnyPolicy:  ").append(inhibitAnyPolicy);
-        sb.append("\n  rootNode: ").append(rootNode);
-        sb.append("\n  remainingCACerts: ").append(remainingCACerts);
-        sb.append("\n  crlSign: ").append(crlSign);
-        sb.append("\n  init: ").append(init);
-        sb.append("\n]\n");
-        return sb.toString();
-    }
-
-    /**
-     * Initialize the state.
-     *
-     * @param buildParams builder parameters
-     */
-    public void initState(BuilderParams buildParams)
-        throws CertPathValidatorException
-    {
-        /*
-         * Initialize number of remainingCACerts.
-         * Note that -1 maxPathLen implies unlimited.
-         * 0 implies only an EE cert is acceptable.
-         */
-        int maxPathLen = buildParams.maxPathLength();
-        remainingCACerts = (maxPathLen == -1) ? Integer.MAX_VALUE
-                                              : maxPathLen;
-
-        /* Initialize explicit policy state variable */
-        if (buildParams.explicitPolicyRequired()) {
-            explicitPolicy = 0;
-        } else {
-            // unconstrained if maxPathLen is -1,
-            // otherwise, we want to initialize this to the value of the
-            // longest possible path + 1 (i.e. maxpathlen + finalcert + 1)
-            explicitPolicy = (maxPathLen == -1) ? maxPathLen : maxPathLen + 2;
-        }
-
-        /* Initialize policy mapping state variable */
-        if (buildParams.policyMappingInhibited()) {
-            policyMapping = 0;
-        } else {
-            policyMapping = (maxPathLen == -1) ? maxPathLen : maxPathLen + 2;
-        }
-
-        /* Initialize inhibit any policy state variable */
-        if (buildParams.anyPolicyInhibited()) {
-            inhibitAnyPolicy = 0;
-        } else {
-            inhibitAnyPolicy = (maxPathLen == -1) ? maxPathLen : maxPathLen + 2;
-        }
-
-        /* Initialize certIndex */
-        certIndex = 1;
-
-        /* Initialize policy tree */
-        Set<String> initExpPolSet = new HashSet<>(1);
-        initExpPolSet.add(PolicyChecker.ANY_POLICY);
-
-        rootNode = new PolicyNodeImpl(null, PolicyChecker.ANY_POLICY, null,
-                                      false, initExpPolSet, false);
-
-        /*
-         * Initialize each user-defined checker
-         * Shallow copy the checkers
-         */
-        userCheckers = new ArrayList<>(buildParams.certPathCheckers());
-        /* initialize each checker (just in case) */
-        for (PKIXCertPathChecker checker : userCheckers) {
-            checker.init(false);
-        }
-
-        /* Start by trusting the cert to sign CRLs */
-        crlSign = true;
-
-        init = true;
-    }
-
-    /**
-     * Update the state with the specified trust anchor.
-     *
-     * @param anchor the most-trusted CA
-     * @param buildParams builder parameters
-     */
-    public void updateState(TrustAnchor anchor, BuilderParams buildParams)
-        throws CertificateException, IOException, CertPathValidatorException
-    {
-        trustAnchor = anchor;
-        X509Certificate trustedCert = anchor.getTrustedCert();
-        if (trustedCert != null) {
-            updateState(trustedCert);
-        } else {
-            X500Principal caName = anchor.getCA();
-            updateState(anchor.getCAPublicKey(), caName);
-        }
-
-        // The user specified AlgorithmChecker and RevocationChecker may not be
-        // able to set the trust anchor until now.
-        boolean revCheckerAdded = false;
-        for (PKIXCertPathChecker checker : userCheckers) {
-            if (checker instanceof AlgorithmChecker) {
-                ((AlgorithmChecker)checker).trySetTrustAnchor(anchor);
-            } else if (checker instanceof PKIXRevocationChecker) {
-                if (revCheckerAdded) {
-                    throw new CertPathValidatorException(
-                        "Only one PKIXRevocationChecker can be specified");
-                }
-                // if it's our own, initialize it
-                if (checker instanceof RevocationChecker) {
-                    ((RevocationChecker)checker).init(anchor, buildParams);
-                }
-                ((PKIXRevocationChecker)checker).init(false);
-                revCheckerAdded = true;
-            }
-        }
-
-        // only create a RevocationChecker if revocation is enabled and
-        // a PKIXRevocationChecker has not already been added
-        if (buildParams.revocationEnabled() && !revCheckerAdded) {
-            revChecker = new RevocationChecker(anchor, buildParams);
-            revChecker.init(false);
-        }
-
-        init = false;
-    }
-
-    /**
-     * Update the state. This method is used when the most-trusted CA is
-     * a trusted public-key and caName, instead of a trusted cert.
-     *
-     * @param pubKey the public key of the trusted CA
-     * @param subjectDN the subject distinguished name of the trusted CA
-     */
-    private void updateState(PublicKey pubKey, X500Principal subjectDN) {
-
-        /* update subject DN */
-        this.subjectDN = subjectDN;
-
-        /* update subject public key */
-        this.pubKey = pubKey;
-    }
-
-    /**
-     * Update the state with the next certificate added to the path.
-     *
-     * @param cert the certificate which is used to update the state
-     */
-    public void updateState(X509Certificate cert)
-        throws CertificateException, IOException, CertPathValidatorException {
-
-        if (cert == null) {
-            return;
-        }
-
-        /* update subject DN */
-        subjectDN = cert.getSubjectX500Principal();
-
-        /* check for key needing to inherit alg parameters */
-        X509CertImpl icert = X509CertImpl.toImpl(cert);
-        PublicKey newKey = cert.getPublicKey();
-        if (PKIX.isDSAPublicKeyWithoutParams(newKey)) {
-            newKey = BasicChecker.makeInheritedParamsKey(newKey, pubKey);
-        }
-
-        /* update subject public key */
-        pubKey = newKey;
-
-        /*
-         * if this is a trusted cert (init == true), then we
-         * don't update any of the remaining fields
-         */
-        if (init) {
-            init = false;
-            return;
-        }
-
-        /* update subject key identifier */
-        subjKeyId = icert.getSubjectKeyIdentifierExtension();
-
-        /* update crlSign */
-        crlSign = RevocationChecker.certCanSignCrl(cert);
-
-        /* update current name constraints */
-        if (nc != null) {
-            nc.merge(icert.getNameConstraintsExtension());
-        } else {
-            nc = icert.getNameConstraintsExtension();
-            if (nc != null) {
-                // Make sure we do a clone here, because we're probably
-                // going to modify this object later and we don't want to
-                // be sharing it with a Certificate object!
-                nc = (NameConstraintsExtension) nc.clone();
-            }
-        }
-
-        /* update policy state variables */
-        explicitPolicy =
-            PolicyChecker.mergeExplicitPolicy(explicitPolicy, icert, false);
-        policyMapping =
-            PolicyChecker.mergePolicyMapping(policyMapping, icert);
-        inhibitAnyPolicy =
-            PolicyChecker.mergeInhibitAnyPolicy(inhibitAnyPolicy, icert);
-        certIndex++;
-
-        /*
-         * Update remaining CA certs
-         */
-        remainingCACerts =
-            ConstraintsChecker.mergeBasicConstraints(cert, remainingCACerts);
-
-        init = false;
-    }
-
-    /**
-     * Returns a boolean flag indicating if a key lacking necessary key
-     * algorithm parameters has been encountered.
-     *
-     * @return boolean flag indicating if key lacking parameters encountered.
-     */
-    @Override
-    public boolean keyParamsNeeded() {
-        /* when building in reverse, we immediately get parameters needed
-         * or else throw an exception
-         */
-        return false;
-    }
-
-    /*
-     * Clone current state. The state is cloned as each cert is
-     * added to the path. This is necessary if backtracking occurs,
-     * and a prior state needs to be restored.
-     *
-     * Note that this is a SMART clone. Not all fields are fully copied,
-     * because some of them (e.g., subjKeyId) will
-     * not have their contents modified by subsequent calls to updateState.
-     */
-    @Override
-    @SuppressWarnings("unchecked") // Safe casts assuming clone() works correctly
-    public Object clone() {
-        try {
-            ReverseState clonedState = (ReverseState) super.clone();
-
-            /* clone checkers, if cloneable */
-            clonedState.userCheckers =
-                        (ArrayList<PKIXCertPathChecker>)userCheckers.clone();
-            ListIterator<PKIXCertPathChecker> li =
-                        clonedState.userCheckers.listIterator();
-            while (li.hasNext()) {
-                PKIXCertPathChecker checker = li.next();
-                if (checker instanceof Cloneable) {
-                    li.set((PKIXCertPathChecker)checker.clone());
-                }
-            }
-
-            /* make copy of name constraints */
-            if (nc != null) {
-                clonedState.nc = (NameConstraintsExtension) nc.clone();
-            }
-
-            /* make copy of policy tree */
-            if (rootNode != null) {
-                clonedState.rootNode = rootNode.copyTree();
-            }
-
-            return clonedState;
-        } catch (CloneNotSupportedException e) {
-            throw new InternalError(e.toString(), e);
-        }
-    }
-}