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My first initial commit with all of mine experimental changes.

Dmitry Kabak (userdima committed 13 years ago

Commit d37b88d1 parent 3f5b46618352 files · +2598093 −-8690Browse files

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1+/*
2+ * Copyright (c) 2000, 2010, Oracle and/or its affiliates. All rights reserved.
3+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4+ *
5+ * This code is free software; you can redistribute it and/or modify it
6+ * under the terms of the GNU General Public License version 2 only, as
7+ * published by the Free Software Foundation. Oracle designates this
8+ * particular file as subject to the "Classpath" exception as provided
9+ * by Oracle in the LICENSE file that accompanied this code.
10+ *
11+ * This code is distributed in the hope that it will be useful, but WITHOUT
12+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14+ * version 2 for more details (a copy is included in the LICENSE file that
15+ * accompanied this code).
16+ *
17+ * You should have received a copy of the GNU General Public License version
18+ * 2 along with this work; if not, write to the Free Software Foundation,
19+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20+ *
21+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22+ * or visit www.oracle.com if you need additional information or have any
23+ * questions.
24+ */
25+
26+package java.security.cert;
27+
28+import java.security.InvalidAlgorithmParameterException;
29+import java.security.KeyStore;
30+import java.security.KeyStoreException;
31+import java.util.ArrayList;
32+import java.util.Collections;
33+import java.util.Date;
34+import java.util.Enumeration;
35+import java.util.HashSet;
36+import java.util.Iterator;
37+import java.util.List;
38+import java.util.Set;
39+
40+/**
41+ * Parameters used as input for the PKIX <code>CertPathValidator</code>
42+ * algorithm.
43+ * <p>
44+ * A PKIX <code>CertPathValidator</code> uses these parameters to
45+ * validate a <code>CertPath</code> according to the PKIX certification path
46+ * validation algorithm.
47+ *
48+ * <p>To instantiate a <code>PKIXParameters</code> object, an
49+ * application must specify one or more <i>most-trusted CAs</i> as defined by
50+ * the PKIX certification path validation algorithm. The most-trusted CAs
51+ * can be specified using one of two constructors. An application
52+ * can call {@link #PKIXParameters(Set) PKIXParameters(Set)},
53+ * specifying a <code>Set</code> of <code>TrustAnchor</code> objects, each
54+ * of which identify a most-trusted CA. Alternatively, an application can call
55+ * {@link #PKIXParameters(KeyStore) PKIXParameters(KeyStore)}, specifying a
56+ * <code>KeyStore</code> instance containing trusted certificate entries, each
57+ * of which will be considered as a most-trusted CA.
58+ * <p>
59+ * Once a <code>PKIXParameters</code> object has been created, other parameters
60+ * can be specified (by calling {@link #setInitialPolicies setInitialPolicies}
61+ * or {@link #setDate setDate}, for instance) and then the
62+ * <code>PKIXParameters</code> is passed along with the <code>CertPath</code>
63+ * to be validated to {@link CertPathValidator#validate
64+ * CertPathValidator.validate}.
65+ * <p>
66+ * Any parameter that is not set (or is set to <code>null</code>) will
67+ * be set to the default value for that parameter. The default value for the
68+ * <code>date</code> parameter is <code>null</code>, which indicates
69+ * the current time when the path is validated. The default for the
70+ * remaining parameters is the least constrained.
71+ * <p>
72+ * <b>Concurrent Access</b>
73+ * <p>
74+ * Unless otherwise specified, the methods defined in this class are not
75+ * thread-safe. Multiple threads that need to access a single
76+ * object concurrently should synchronize amongst themselves and
77+ * provide the necessary locking. Multiple threads each manipulating
78+ * separate objects need not synchronize.
79+ *
80+ * @see CertPathValidator
81+ *
82+ * @since 1.4
83+ * @author Sean Mullan
84+ * @author Yassir Elley
85+ */
86+public class PKIXParameters implements CertPathParameters {
87+
88+ private Set<TrustAnchor> unmodTrustAnchors;
89+ private Date date;
90+ private List<PKIXCertPathChecker> certPathCheckers;
91+ private String sigProvider;
92+ private boolean revocationEnabled = true;
93+ private Set<String> unmodInitialPolicies;
94+ private boolean explicitPolicyRequired = false;
95+ private boolean policyMappingInhibited = false;
96+ private boolean anyPolicyInhibited = false;
97+ private boolean policyQualifiersRejected = true;
98+ private List<CertStore> certStores;
99+ private CertSelector certSelector;
100+
101+ /**
102+ * Creates an instance of <code>PKIXParameters</code> with the specified
103+ * <code>Set</code> of most-trusted CAs. Each element of the
104+ * set is a {@link TrustAnchor TrustAnchor}.
105+ * <p>
106+ * Note that the <code>Set</code> is copied to protect against
107+ * subsequent modifications.
108+ *
109+ * @param trustAnchors a <code>Set</code> of <code>TrustAnchor</code>s
110+ * @throws InvalidAlgorithmParameterException if the specified
111+ * <code>Set</code> is empty <code>(trustAnchors.isEmpty() == true)</code>
112+ * @throws NullPointerException if the specified <code>Set</code> is
113+ * <code>null</code>
114+ * @throws ClassCastException if any of the elements in the <code>Set</code>
115+ * are not of type <code>java.security.cert.TrustAnchor</code>
116+ */
117+ public PKIXParameters(Set<TrustAnchor> trustAnchors)
118+ throws InvalidAlgorithmParameterException
119+ {
120+ setTrustAnchors(trustAnchors);
121+
122+ this.unmodInitialPolicies = Collections.<String>emptySet();
123+ this.certPathCheckers = new ArrayList<PKIXCertPathChecker>();
124+ this.certStores = new ArrayList<CertStore>();
125+ }
126+
127+ /**
128+ * Creates an instance of <code>PKIXParameters</code> that
129+ * populates the set of most-trusted CAs from the trusted
130+ * certificate entries contained in the specified <code>KeyStore</code>.
131+ * Only keystore entries that contain trusted <code>X509Certificates</code>
132+ * are considered; all other certificate types are ignored.
133+ *
134+ * @param keystore a <code>KeyStore</code> from which the set of
135+ * most-trusted CAs will be populated
136+ * @throws KeyStoreException if the keystore has not been initialized
137+ * @throws InvalidAlgorithmParameterException if the keystore does
138+ * not contain at least one trusted certificate entry
139+ * @throws NullPointerException if the keystore is <code>null</code>
140+ */
141+ public PKIXParameters(KeyStore keystore)
142+ throws KeyStoreException, InvalidAlgorithmParameterException
143+ {
144+ if (keystore == null)
145+ throw new NullPointerException("the keystore parameter must be " +
146+ "non-null");
147+ Set<TrustAnchor> hashSet = new HashSet<TrustAnchor>();
148+ Enumeration<String> aliases = keystore.aliases();
149+ while (aliases.hasMoreElements()) {
150+ String alias = aliases.nextElement();
151+ if (keystore.isCertificateEntry(alias)) {
152+ Certificate cert = keystore.getCertificate(alias);
153+ if (cert instanceof X509Certificate)
154+ hashSet.add(new TrustAnchor((X509Certificate)cert, null));
155+ }
156+ }
157+ setTrustAnchors(hashSet);
158+ this.unmodInitialPolicies = Collections.<String>emptySet();
159+ this.certPathCheckers = new ArrayList<PKIXCertPathChecker>();
160+ this.certStores = new ArrayList<CertStore>();
161+ }
162+
163+ /**
164+ * Returns an immutable <code>Set</code> of the most-trusted
165+ * CAs.
166+ *
167+ * @return an immutable <code>Set</code> of <code>TrustAnchor</code>s
168+ * (never <code>null</code>)
169+ *
170+ * @see #setTrustAnchors
171+ */
172+ public Set<TrustAnchor> getTrustAnchors() {
173+ return this.unmodTrustAnchors;
174+ }
175+
176+ /**
177+ * Sets the <code>Set</code> of most-trusted CAs.
178+ * <p>
179+ * Note that the <code>Set</code> is copied to protect against
180+ * subsequent modifications.
181+ *
182+ * @param trustAnchors a <code>Set</code> of <code>TrustAnchor</code>s
183+ * @throws InvalidAlgorithmParameterException if the specified
184+ * <code>Set</code> is empty <code>(trustAnchors.isEmpty() == true)</code>
185+ * @throws NullPointerException if the specified <code>Set</code> is
186+ * <code>null</code>
187+ * @throws ClassCastException if any of the elements in the set
188+ * are not of type <code>java.security.cert.TrustAnchor</code>
189+ *
190+ * @see #getTrustAnchors
191+ */
192+ public void setTrustAnchors(Set<TrustAnchor> trustAnchors)
193+ throws InvalidAlgorithmParameterException
194+ {
195+ if (trustAnchors == null) {
196+ throw new NullPointerException("the trustAnchors parameters must" +
197+ " be non-null");
198+ }
199+ if (trustAnchors.isEmpty()) {
200+ throw new InvalidAlgorithmParameterException("the trustAnchors " +
201+ "parameter must be non-empty");
202+ }
203+ for (Iterator<TrustAnchor> i = trustAnchors.iterator(); i.hasNext(); ) {
204+ if (!(i.next() instanceof TrustAnchor)) {
205+ throw new ClassCastException("all elements of set must be "
206+ + "of type java.security.cert.TrustAnchor");
207+ }
208+ }
209+ this.unmodTrustAnchors = Collections.unmodifiableSet
210+ (new HashSet<TrustAnchor>(trustAnchors));
211+ }
212+
213+ /**
214+ * Returns an immutable <code>Set</code> of initial
215+ * policy identifiers (OID strings), indicating that any one of these
216+ * policies would be acceptable to the certificate user for the purposes of
217+ * certification path processing. The default return value is an empty
218+ * <code>Set</code>, which is interpreted as meaning that any policy would
219+ * be acceptable.
220+ *
221+ * @return an immutable <code>Set</code> of initial policy OIDs in
222+ * <code>String</code> format, or an empty <code>Set</code> (implying any
223+ * policy is acceptable). Never returns <code>null</code>.
224+ *
225+ * @see #setInitialPolicies
226+ */
227+ public Set<String> getInitialPolicies() {
228+ return this.unmodInitialPolicies;
229+ }
230+
231+ /**
232+ * Sets the <code>Set</code> of initial policy identifiers
233+ * (OID strings), indicating that any one of these
234+ * policies would be acceptable to the certificate user for the purposes of
235+ * certification path processing. By default, any policy is acceptable
236+ * (i.e. all policies), so a user that wants to allow any policy as
237+ * acceptable does not need to call this method, or can call it
238+ * with an empty <code>Set</code> (or <code>null</code>).
239+ * <p>
240+ * Note that the <code>Set</code> is copied to protect against
241+ * subsequent modifications.
242+ *
243+ * @param initialPolicies a <code>Set</code> of initial policy
244+ * OIDs in <code>String</code> format (or <code>null</code>)
245+ * @throws ClassCastException if any of the elements in the set are
246+ * not of type <code>String</code>
247+ *
248+ * @see #getInitialPolicies
249+ */
250+ public void setInitialPolicies(Set<String> initialPolicies) {
251+ if (initialPolicies != null) {
252+ for (Iterator<String> i = initialPolicies.iterator();
253+ i.hasNext();) {
254+ if (!(i.next() instanceof String))
255+ throw new ClassCastException("all elements of set must be "
256+ + "of type java.lang.String");
257+ }
258+ this.unmodInitialPolicies =
259+ Collections.unmodifiableSet(new HashSet<String>(initialPolicies));
260+ } else
261+ this.unmodInitialPolicies = Collections.<String>emptySet();
262+ }
263+
264+ /**
265+ * Sets the list of <code>CertStore</code>s to be used in finding
266+ * certificates and CRLs. May be <code>null</code>, in which case
267+ * no <code>CertStore</code>s will be used. The first
268+ * <code>CertStore</code>s in the list may be preferred to those that
269+ * appear later.
270+ * <p>
271+ * Note that the <code>List</code> is copied to protect against
272+ * subsequent modifications.
273+ *
274+ * @param stores a <code>List</code> of <code>CertStore</code>s (or
275+ * <code>null</code>)
276+ * @throws ClassCastException if any of the elements in the list are
277+ * not of type <code>java.security.cert.CertStore</code>
278+ *
279+ * @see #getCertStores
280+ */
281+ public void setCertStores(List<CertStore> stores) {
282+ if (stores == null) {
283+ this.certStores = new ArrayList<CertStore>();
284+ } else {
285+ for (Iterator<CertStore> i = stores.iterator(); i.hasNext();) {
286+ if (!(i.next() instanceof CertStore)) {
287+ throw new ClassCastException("all elements of list must be "
288+ + "of type java.security.cert.CertStore");
289+ }
290+ }
291+ this.certStores = new ArrayList<CertStore>(stores);
292+ }
293+ }
294+
295+ /**
296+ * Adds a <code>CertStore</code> to the end of the list of
297+ * <code>CertStore</code>s used in finding certificates and CRLs.
298+ *
299+ * @param store the <code>CertStore</code> to add. If <code>null</code>,
300+ * the store is ignored (not added to list).
301+ */
302+ public void addCertStore(CertStore store) {
303+ if (store != null) {
304+ this.certStores.add(store);
305+ }
306+ }
307+
308+ /**
309+ * Returns an immutable <code>List</code> of <code>CertStore</code>s that
310+ * are used to find certificates and CRLs.
311+ *
312+ * @return an immutable <code>List</code> of <code>CertStore</code>s
313+ * (may be empty, but never <code>null</code>)
314+ *
315+ * @see #setCertStores
316+ */
317+ public List<CertStore> getCertStores() {
318+ return Collections.unmodifiableList
319+ (new ArrayList<CertStore>(this.certStores));
320+ }
321+
322+ /**
323+ * Sets the RevocationEnabled flag. If this flag is true, the default
324+ * revocation checking mechanism of the underlying PKIX service provider
325+ * will be used. If this flag is false, the default revocation checking
326+ * mechanism will be disabled (not used).
327+ * <p>
328+ * When a <code>PKIXParameters</code> object is created, this flag is set
329+ * to true. This setting reflects the most common strategy for checking
330+ * revocation, since each service provider must support revocation
331+ * checking to be PKIX compliant. Sophisticated applications should set
332+ * this flag to false when it is not practical to use a PKIX service
333+ * provider's default revocation checking mechanism or when an alternative
334+ * revocation checking mechanism is to be substituted (by also calling the
335+ * {@link #addCertPathChecker addCertPathChecker} or {@link
336+ * #setCertPathCheckers setCertPathCheckers} methods).
337+ *
338+ * @param val the new value of the RevocationEnabled flag
339+ */
340+ public void setRevocationEnabled(boolean val) {
341+ revocationEnabled = val;
342+ }
343+
344+ /**
345+ * Checks the RevocationEnabled flag. If this flag is true, the default
346+ * revocation checking mechanism of the underlying PKIX service provider
347+ * will be used. If this flag is false, the default revocation checking
348+ * mechanism will be disabled (not used). See the {@link
349+ * #setRevocationEnabled setRevocationEnabled} method for more details on
350+ * setting the value of this flag.
351+ *
352+ * @return the current value of the RevocationEnabled flag
353+ */
354+ public boolean isRevocationEnabled() {
355+ return revocationEnabled;
356+ }
357+
358+ /**
359+ * Sets the ExplicitPolicyRequired flag. If this flag is true, an
360+ * acceptable policy needs to be explicitly identified in every certificate.
361+ * By default, the ExplicitPolicyRequired flag is false.
362+ *
363+ * @param val <code>true</code> if explicit policy is to be required,
364+ * <code>false</code> otherwise
365+ */
366+ public void setExplicitPolicyRequired(boolean val) {
367+ explicitPolicyRequired = val;
368+ }
369+
370+ /**
371+ * Checks if explicit policy is required. If this flag is true, an
372+ * acceptable policy needs to be explicitly identified in every certificate.
373+ * By default, the ExplicitPolicyRequired flag is false.
374+ *
375+ * @return <code>true</code> if explicit policy is required,
376+ * <code>false</code> otherwise
377+ */
378+ public boolean isExplicitPolicyRequired() {
379+ return explicitPolicyRequired;
380+ }
381+
382+ /**
383+ * Sets the PolicyMappingInhibited flag. If this flag is true, policy
384+ * mapping is inhibited. By default, policy mapping is not inhibited (the
385+ * flag is false).
386+ *
387+ * @param val <code>true</code> if policy mapping is to be inhibited,
388+ * <code>false</code> otherwise
389+ */
390+ public void setPolicyMappingInhibited(boolean val) {
391+ policyMappingInhibited = val;
392+ }
393+
394+ /**
395+ * Checks if policy mapping is inhibited. If this flag is true, policy
396+ * mapping is inhibited. By default, policy mapping is not inhibited (the
397+ * flag is false).
398+ *
399+ * @return true if policy mapping is inhibited, false otherwise
400+ */
401+ public boolean isPolicyMappingInhibited() {
402+ return policyMappingInhibited;
403+ }
404+
405+ /**
406+ * Sets state to determine if the any policy OID should be processed
407+ * if it is included in a certificate. By default, the any policy OID
408+ * is not inhibited ({@link #isAnyPolicyInhibited isAnyPolicyInhibited()}
409+ * returns <code>false</code>).
410+ *
411+ * @param val <code>true</code> if the any policy OID is to be
412+ * inhibited, <code>false</code> otherwise
413+ */
414+ public void setAnyPolicyInhibited(boolean val) {
415+ anyPolicyInhibited = val;
416+ }
417+
418+ /**
419+ * Checks whether the any policy OID should be processed if it
420+ * is included in a certificate.
421+ *
422+ * @return <code>true</code> if the any policy OID is inhibited,
423+ * <code>false</code> otherwise
424+ */
425+ public boolean isAnyPolicyInhibited() {
426+ return anyPolicyInhibited;
427+ }
428+
429+ /**
430+ * Sets the PolicyQualifiersRejected flag. If this flag is true,
431+ * certificates that include policy qualifiers in a certificate
432+ * policies extension that is marked critical are rejected.
433+ * If the flag is false, certificates are not rejected on this basis.
434+ *
435+ * <p> When a <code>PKIXParameters</code> object is created, this flag is
436+ * set to true. This setting reflects the most common (and simplest)
437+ * strategy for processing policy qualifiers. Applications that want to use
438+ * a more sophisticated policy must set this flag to false.
439+ * <p>
440+ * Note that the PKIX certification path validation algorithm specifies
441+ * that any policy qualifier in a certificate policies extension that is
442+ * marked critical must be processed and validated. Otherwise the
443+ * certification path must be rejected. If the policyQualifiersRejected flag
444+ * is set to false, it is up to the application to validate all policy
445+ * qualifiers in this manner in order to be PKIX compliant.
446+ *
447+ * @param qualifiersRejected the new value of the PolicyQualifiersRejected
448+ * flag
449+ * @see #getPolicyQualifiersRejected
450+ * @see PolicyQualifierInfo
451+ */
452+ public void setPolicyQualifiersRejected(boolean qualifiersRejected) {
453+ policyQualifiersRejected = qualifiersRejected;
454+ }
455+
456+ /**
457+ * Gets the PolicyQualifiersRejected flag. If this flag is true,
458+ * certificates that include policy qualifiers in a certificate policies
459+ * extension that is marked critical are rejected.
460+ * If the flag is false, certificates are not rejected on this basis.
461+ *
462+ * <p> When a <code>PKIXParameters</code> object is created, this flag is
463+ * set to true. This setting reflects the most common (and simplest)
464+ * strategy for processing policy qualifiers. Applications that want to use
465+ * a more sophisticated policy must set this flag to false.
466+ *
467+ * @return the current value of the PolicyQualifiersRejected flag
468+ * @see #setPolicyQualifiersRejected
469+ */
470+ public boolean getPolicyQualifiersRejected() {
471+ return policyQualifiersRejected;
472+ }
473+
474+ /**
475+ * Returns the time for which the validity of the certification path
476+ * should be determined. If <code>null</code>, the current time is used.
477+ * <p>
478+ * Note that the <code>Date</code> returned is copied to protect against
479+ * subsequent modifications.
480+ *
481+ * @return the <code>Date</code>, or <code>null</code> if not set
482+ * @see #setDate
483+ */
484+ public Date getDate() {
485+ if (date == null)
486+ return null;
487+ else
488+ return (Date) this.date.clone();
489+ }
490+
491+ /**
492+ * Sets the time for which the validity of the certification path
493+ * should be determined. If <code>null</code>, the current time is used.
494+ * <p>
495+ * Note that the <code>Date</code> supplied here is copied to protect
496+ * against subsequent modifications.
497+ *
498+ * @param date the <code>Date</code>, or <code>null</code> for the
499+ * current time
500+ * @see #getDate
501+ */
502+ public void setDate(Date date) {
503+ if (date != null)
504+ this.date = (Date) date.clone();
505+ else
506+ date = null;
507+ }
508+
509+ /**
510+ * Sets a <code>List</code> of additional certification path checkers. If
511+ * the specified <code>List</code> contains an object that is not a
512+ * <code>PKIXCertPathChecker</code>, it is ignored.
513+ * <p>
514+ * Each <code>PKIXCertPathChecker</code> specified implements
515+ * additional checks on a certificate. Typically, these are checks to
516+ * process and verify private extensions contained in certificates.
517+ * Each <code>PKIXCertPathChecker</code> should be instantiated with any
518+ * initialization parameters needed to execute the check.
519+ * <p>
520+ * This method allows sophisticated applications to extend a PKIX
521+ * <code>CertPathValidator</code> or <code>CertPathBuilder</code>.
522+ * Each of the specified <code>PKIXCertPathChecker</code>s will be called,
523+ * in turn, by a PKIX <code>CertPathValidator</code> or
524+ * <code>CertPathBuilder</code> for each certificate processed or
525+ * validated.
526+ * <p>
527+ * Regardless of whether these additional <code>PKIXCertPathChecker</code>s
528+ * are set, a PKIX <code>CertPathValidator</code> or
529+ * <code>CertPathBuilder</code> must perform all of the required PKIX
530+ * checks on each certificate. The one exception to this rule is if the
531+ * RevocationEnabled flag is set to false (see the {@link
532+ * #setRevocationEnabled setRevocationEnabled} method).
533+ * <p>
534+ * Note that the <code>List</code> supplied here is copied and each
535+ * <code>PKIXCertPathChecker</code> in the list is cloned to protect
536+ * against subsequent modifications.
537+ *
538+ * @param checkers a <code>List</code> of <code>PKIXCertPathChecker</code>s.
539+ * May be <code>null</code>, in which case no additional checkers will be
540+ * used.
541+ * @throws ClassCastException if any of the elements in the list
542+ * are not of type <code>java.security.cert.PKIXCertPathChecker</code>
543+ * @see #getCertPathCheckers
544+ */
545+ public void setCertPathCheckers(List<PKIXCertPathChecker> checkers) {
546+ if (checkers != null) {
547+ List<PKIXCertPathChecker> tmpList =
548+ new ArrayList<PKIXCertPathChecker>();
549+ for (PKIXCertPathChecker checker : checkers) {
550+ tmpList.add((PKIXCertPathChecker)checker.clone());
551+ }
552+ this.certPathCheckers = tmpList;
553+ } else {
554+ this.certPathCheckers = new ArrayList<PKIXCertPathChecker>();
555+ }
556+ }
557+
558+ /**
559+ * Returns the <code>List</code> of certification path checkers.
560+ * The returned <code>List</code> is immutable, and each
561+ * <code>PKIXCertPathChecker</code> in the <code>List</code> is cloned
562+ * to protect against subsequent modifications.
563+ *
564+ * @return an immutable <code>List</code> of
565+ * <code>PKIXCertPathChecker</code>s (may be empty, but not
566+ * <code>null</code>)
567+ * @see #setCertPathCheckers
568+ */
569+ public List<PKIXCertPathChecker> getCertPathCheckers() {
570+ List<PKIXCertPathChecker> tmpList = new ArrayList<PKIXCertPathChecker>();
571+ for (PKIXCertPathChecker ck : certPathCheckers) {
572+ tmpList.add((PKIXCertPathChecker)ck.clone());
573+ }
574+ return Collections.unmodifiableList(tmpList);
575+ }
576+
577+ /**
578+ * Adds a <code>PKIXCertPathChecker</code> to the list of certification
579+ * path checkers. See the {@link #setCertPathCheckers setCertPathCheckers}
580+ * method for more details.
581+ * <p>
582+ * Note that the <code>PKIXCertPathChecker</code> is cloned to protect
583+ * against subsequent modifications.
584+ *
585+ * @param checker a <code>PKIXCertPathChecker</code> to add to the list of
586+ * checks. If <code>null</code>, the checker is ignored (not added to list).
587+ */
588+ public void addCertPathChecker(PKIXCertPathChecker checker) {
589+ if (checker != null) {
590+ certPathCheckers.add((PKIXCertPathChecker)checker.clone());
591+ }
592+ }
593+
594+ /**
595+ * Returns the signature provider's name, or <code>null</code>
596+ * if not set.
597+ *
598+ * @return the signature provider's name (or <code>null</code>)
599+ * @see #setSigProvider
600+ */
601+ public String getSigProvider() {
602+ return this.sigProvider;
603+ }
604+
605+ /**
606+ * Sets the signature provider's name. The specified provider will be
607+ * preferred when creating {@link java.security.Signature Signature}
608+ * objects. If <code>null</code> or not set, the first provider found
609+ * supporting the algorithm will be used.
610+ *
611+ * @param sigProvider the signature provider's name (or <code>null</code>)
612+ * @see #getSigProvider
613+ */
614+ public void setSigProvider(String sigProvider) {
615+ this.sigProvider = sigProvider;
616+ }
617+
618+ /**
619+ * Returns the required constraints on the target certificate.
620+ * The constraints are returned as an instance of <code>CertSelector</code>.
621+ * If <code>null</code>, no constraints are defined.
622+ *
623+ * <p>Note that the <code>CertSelector</code> returned is cloned
624+ * to protect against subsequent modifications.
625+ *
626+ * @return a <code>CertSelector</code> specifying the constraints
627+ * on the target certificate (or <code>null</code>)
628+ * @see #setTargetCertConstraints
629+ */
630+ public CertSelector getTargetCertConstraints() {
631+ if (certSelector != null) {
632+ return (CertSelector) certSelector.clone();
633+ } else {
634+ return null;
635+ }
636+ }
637+
638+ /**
639+ * Sets the required constraints on the target certificate.
640+ * The constraints are specified as an instance of
641+ * <code>CertSelector</code>. If <code>null</code>, no constraints are
642+ * defined.
643+ *
644+ * <p>Note that the <code>CertSelector</code> specified is cloned
645+ * to protect against subsequent modifications.
646+ *
647+ * @param selector a <code>CertSelector</code> specifying the constraints
648+ * on the target certificate (or <code>null</code>)
649+ * @see #getTargetCertConstraints
650+ */
651+ public void setTargetCertConstraints(CertSelector selector) {
652+ if (selector != null)
653+ certSelector = (CertSelector) selector.clone();
654+ else
655+ certSelector = null;
656+ }
657+
658+ /**
659+ * Makes a copy of this <code>PKIXParameters</code> object. Changes
660+ * to the copy will not affect the original and vice versa.
661+ *
662+ * @return a copy of this <code>PKIXParameters</code> object
663+ */
664+ public Object clone() {
665+ try {
666+ PKIXParameters copy = (PKIXParameters)super.clone();
667+
668+ // must clone these because addCertStore, et al. modify them
669+ if (certStores != null) {
670+ copy.certStores = new ArrayList<CertStore>(certStores);
671+ }
672+ if (certPathCheckers != null) {
673+ copy.certPathCheckers =
674+ new ArrayList<PKIXCertPathChecker>(certPathCheckers.size());
675+ for (PKIXCertPathChecker checker : certPathCheckers) {
676+ copy.certPathCheckers.add(
677+ (PKIXCertPathChecker)checker.clone());
678+ }
679+ }
680+
681+ // other class fields are immutable to public, don't bother
682+ // to clone the read-only fields.
683+ return copy;
684+ } catch (CloneNotSupportedException e) {
685+ /* Cannot happen */
686+ throw new InternalError(e.toString());
687+ }
688+ }
689+
690+ /**
691+ * Returns a formatted string describing the parameters.
692+ *
693+ * @return a formatted string describing the parameters.
694+ */
695+ public String toString() {
696+ StringBuffer sb = new StringBuffer();
697+ sb.append("[\n");
698+
699+ /* start with trusted anchor info */
700+ if (unmodTrustAnchors != null) {
701+ sb.append(" Trust Anchors: " + unmodTrustAnchors.toString()
702+ + "\n");
703+ }
704+
705+ /* now, append initial state information */
706+ if (unmodInitialPolicies != null) {
707+ if (unmodInitialPolicies.isEmpty()) {
708+ sb.append(" Initial Policy OIDs: any\n");
709+ } else {
710+ sb.append(" Initial Policy OIDs: ["
711+ + unmodInitialPolicies.toString() + "]\n");
712+ }
713+ }
714+
715+ /* now, append constraints on all certificates in the path */
716+ sb.append(" Validity Date: " + String.valueOf(date) + "\n");
717+ sb.append(" Signature Provider: " + String.valueOf(sigProvider) + "\n");
718+ sb.append(" Default Revocation Enabled: " + revocationEnabled + "\n");
719+ sb.append(" Explicit Policy Required: " + explicitPolicyRequired + "\n");
720+ sb.append(" Policy Mapping Inhibited: " + policyMappingInhibited + "\n");
721+ sb.append(" Any Policy Inhibited: " + anyPolicyInhibited + "\n");
722+ sb.append(" Policy Qualifiers Rejected: " + policyQualifiersRejected + "\n");
723+
724+ /* now, append target cert requirements */
725+ sb.append(" Target Cert Constraints: " + String.valueOf(certSelector) + "\n");
726+
727+ /* finally, append miscellaneous parameters */
728+ if (certPathCheckers != null)
729+ sb.append(" Certification Path Checkers: ["
730+ + certPathCheckers.toString() + "]\n");
731+ if (certStores != null)
732+ sb.append(" CertStores: [" + certStores.toString() + "]\n");
733+ sb.append("]");
734+ return sb.toString();
735+ }
736+}