| /* |
| * Copyright (C) 2014 The Android Open Source Project |
| * Copyright (c) 1996, 2014, 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 java.security; |
| |
| import java.io.*; |
| import java.util.*; |
| import java.util.concurrent.atomic.AtomicBoolean; |
| |
| import static java.util.Locale.ENGLISH; |
| |
| import java.lang.ref.*; |
| import java.lang.reflect.*; |
| import java.security.Security; |
| import java.util.function.BiConsumer; |
| import java.util.function.BiFunction; |
| import java.util.function.Function; |
| |
| /** |
| * This class represents a "provider" for the |
| * Java Security API, where a provider implements some or all parts of |
| * Java Security. Services that a provider may implement include: |
| * |
| * <ul> |
| * |
| * <li>Algorithms (such as DSA, RSA, MD5 or SHA-1). |
| * |
| * <li>Key generation, conversion, and management facilities (such as for |
| * algorithm-specific keys). |
| * |
| *</ul> |
| * |
| * <p>Each provider has a name and a version number, and is configured |
| * in each runtime it is installed in. |
| * |
| * <p>See <a href = |
| * "../../../technotes/guides/security/crypto/CryptoSpec.html#Provider">The Provider Class</a> |
| * in the "Java Cryptography Architecture API Specification & Reference" |
| * for information about how a particular type of provider, the |
| * cryptographic service provider, works and is installed. However, |
| * please note that a provider can be used to implement any security |
| * service in Java that uses a pluggable architecture with a choice |
| * of implementations that fit underneath. |
| * |
| * <p>Some provider implementations may encounter unrecoverable internal |
| * errors during their operation, for example a failure to communicate with a |
| * security token. A {@link ProviderException} should be used to indicate |
| * such errors. |
| * |
| * <p>The service type {@code Provider} is reserved for use by the |
| * security framework. Services of this type cannot be added, removed, |
| * or modified by applications. |
| * The following attributes are automatically placed in each Provider object: |
| * <table cellspacing=4> |
| * <caption><b>Attributes Automatically Placed in a Provider Object</b></caption> |
| * <tr><th>Name</th><th>Value</th> |
| * <tr><td>{@code Provider.id name}</td> |
| * <td>{@code String.valueOf(provider.getName())}</td> |
| * <tr><td>{@code Provider.id version}</td> |
| * <td>{@code String.valueOf(provider.getVersion())}</td> |
| * <tr><td>{@code Provider.id info}</td> |
| <td>{@code String.valueOf(provider.getInfo())}</td> |
| * <tr><td>{@code Provider.id className}</td> |
| * <td>{@code provider.getClass().getName()}</td> |
| * </table> |
| * |
| * @author Benjamin Renaud |
| * @author Andreas Sterbenz |
| */ |
| public abstract class Provider extends Properties { |
| |
| // Declare serialVersionUID to be compatible with JDK1.1 |
| static final long serialVersionUID = -4298000515446427739L; |
| |
| // Android-added: Provider registration. |
| // Marking a provider as "registered" makes it change the security version when |
| // changes to it are made. As of 2017-05-22 this is only used in ProviderTest. |
| // TODO: Change ProviderTest to no longer require this mechanism |
| private volatile boolean registered = false; |
| |
| private static final sun.security.util.Debug debug = |
| sun.security.util.Debug.getInstance |
| ("provider", "Provider"); |
| |
| /** |
| * The provider name. |
| * |
| * @serial |
| */ |
| private String name; |
| |
| /** |
| * A description of the provider and its services. |
| * |
| * @serial |
| */ |
| private String info; |
| |
| /** |
| * The provider version number. |
| * |
| * @serial |
| */ |
| private double version; |
| |
| |
| private transient Set<Map.Entry<Object,Object>> entrySet = null; |
| private transient int entrySetCallCount = 0; |
| |
| private transient boolean initialized; |
| |
| /** |
| * Constructs a provider with the specified name, version number, |
| * and information. |
| * |
| * @param name the provider name. |
| * |
| * @param version the provider version number. |
| * |
| * @param info a description of the provider and its services. |
| */ |
| protected Provider(String name, double version, String info) { |
| this.name = name; |
| this.version = version; |
| this.info = info; |
| putId(); |
| initialized = true; |
| } |
| |
| /** |
| * Returns the name of this provider. |
| * |
| * @return the name of this provider. |
| */ |
| public String getName() { |
| return name; |
| } |
| |
| /** |
| * Returns the version number for this provider. |
| * |
| * @return the version number for this provider. |
| */ |
| public double getVersion() { |
| return version; |
| } |
| |
| /** |
| * Returns a human-readable description of the provider and its |
| * services. This may return an HTML page, with relevant links. |
| * |
| * @return a description of the provider and its services. |
| */ |
| public String getInfo() { |
| return info; |
| } |
| |
| /** |
| * Returns a string with the name and the version number |
| * of this provider. |
| * |
| * @return the string with the name and the version number |
| * for this provider. |
| */ |
| public String toString() { |
| return name + " version " + version; |
| } |
| |
| /* |
| * override the following methods to ensure that provider |
| * information can only be changed if the caller has the appropriate |
| * permissions. |
| */ |
| |
| /** |
| * Clears this provider so that it no longer contains the properties |
| * used to look up facilities implemented by the provider. |
| * |
| * <p>If a security manager is enabled, its {@code checkSecurityAccess} |
| * method is called with the string {@code "clearProviderProperties."+name} |
| * (where {@code name} is the provider name) to see if it's ok to clear |
| * this provider. |
| * |
| * @throws SecurityException |
| * if a security manager exists and its {@link |
| * java.lang.SecurityManager#checkSecurityAccess} method |
| * denies access to clear this provider |
| * |
| * @since 1.2 |
| */ |
| @Override |
| public synchronized void clear() { |
| check("clearProviderProperties."+name); |
| if (debug != null) { |
| debug.println("Remove " + name + " provider properties"); |
| } |
| implClear(); |
| } |
| |
| /** |
| * Reads a property list (key and element pairs) from the input stream. |
| * |
| * @param inStream the input stream. |
| * @exception IOException if an error occurred when reading from the |
| * input stream. |
| * @see java.util.Properties#load |
| */ |
| @Override |
| public synchronized void load(InputStream inStream) throws IOException { |
| check("putProviderProperty."+name); |
| if (debug != null) { |
| debug.println("Load " + name + " provider properties"); |
| } |
| Properties tempProperties = new Properties(); |
| tempProperties.load(inStream); |
| implPutAll(tempProperties); |
| } |
| |
| /** |
| * Copies all of the mappings from the specified Map to this provider. |
| * These mappings will replace any properties that this provider had |
| * for any of the keys currently in the specified Map. |
| * |
| * @since 1.2 |
| */ |
| @Override |
| public synchronized void putAll(Map<?,?> t) { |
| check("putProviderProperty."+name); |
| if (debug != null) { |
| debug.println("Put all " + name + " provider properties"); |
| } |
| implPutAll(t); |
| } |
| |
| /** |
| * Returns an unmodifiable Set view of the property entries contained |
| * in this Provider. |
| * |
| * @see java.util.Map.Entry |
| * @since 1.2 |
| */ |
| @Override |
| public synchronized Set<Map.Entry<Object,Object>> entrySet() { |
| checkInitialized(); |
| if (entrySet == null) { |
| if (entrySetCallCount++ == 0) // Initial call |
| entrySet = Collections.unmodifiableMap(this).entrySet(); |
| else |
| return super.entrySet(); // Recursive call |
| } |
| |
| // This exception will be thrown if the implementation of |
| // Collections.unmodifiableMap.entrySet() is changed such that it |
| // no longer calls entrySet() on the backing Map. (Provider's |
| // entrySet implementation depends on this "implementation detail", |
| // which is unlikely to change. |
| if (entrySetCallCount != 2) |
| throw new RuntimeException("Internal error."); |
| |
| return entrySet; |
| } |
| |
| /** |
| * Returns an unmodifiable Set view of the property keys contained in |
| * this provider. |
| * |
| * @since 1.2 |
| */ |
| @Override |
| public Set<Object> keySet() { |
| checkInitialized(); |
| return Collections.unmodifiableSet(super.keySet()); |
| } |
| |
| /** |
| * Returns an unmodifiable Collection view of the property values |
| * contained in this provider. |
| * |
| * @since 1.2 |
| */ |
| @Override |
| public Collection<Object> values() { |
| checkInitialized(); |
| return Collections.unmodifiableCollection(super.values()); |
| } |
| |
| /** |
| * Sets the {@code key} property to have the specified |
| * {@code value}. |
| * |
| * <p>If a security manager is enabled, its {@code checkSecurityAccess} |
| * method is called with the string {@code "putProviderProperty."+name}, |
| * where {@code name} is the provider name, to see if it's ok to set this |
| * provider's property values. |
| * |
| * @throws SecurityException |
| * if a security manager exists and its {@link |
| * java.lang.SecurityManager#checkSecurityAccess} method |
| * denies access to set property values. |
| * |
| * @since 1.2 |
| */ |
| @Override |
| public synchronized Object put(Object key, Object value) { |
| check("putProviderProperty."+name); |
| if (debug != null) { |
| debug.println("Set " + name + " provider property [" + |
| key + "/" + value +"]"); |
| } |
| return implPut(key, value); |
| } |
| |
| /** |
| * If the specified key is not already associated with a value (or is mapped |
| * to {@code null}) associates it with the given value and returns |
| * {@code null}, else returns the current value. |
| * |
| * <p>If a security manager is enabled, its {@code checkSecurityAccess} |
| * method is called with the string {@code "putProviderProperty."+name}, |
| * where {@code name} is the provider name, to see if it's ok to set this |
| * provider's property values. |
| * |
| * @throws SecurityException |
| * if a security manager exists and its {@link |
| * java.lang.SecurityManager#checkSecurityAccess} method |
| * denies access to set property values. |
| * |
| * @since 1.8 |
| */ |
| @Override |
| public synchronized Object putIfAbsent(Object key, Object value) { |
| check("putProviderProperty."+name); |
| if (debug != null) { |
| debug.println("Set " + name + " provider property [" + |
| key + "/" + value +"]"); |
| } |
| return implPutIfAbsent(key, value); |
| } |
| |
| /** |
| * Removes the {@code key} property (and its corresponding |
| * {@code value}). |
| * |
| * <p>If a security manager is enabled, its {@code checkSecurityAccess} |
| * method is called with the string {@code "removeProviderProperty."+name}, |
| * where {@code name} is the provider name, to see if it's ok to remove this |
| * provider's properties. |
| * |
| * @throws SecurityException |
| * if a security manager exists and its {@link |
| * java.lang.SecurityManager#checkSecurityAccess} method |
| * denies access to remove this provider's properties. |
| * |
| * @since 1.2 |
| */ |
| @Override |
| public synchronized Object remove(Object key) { |
| check("removeProviderProperty."+name); |
| if (debug != null) { |
| debug.println("Remove " + name + " provider property " + key); |
| } |
| return implRemove(key); |
| } |
| |
| /** |
| * Removes the entry for the specified key only if it is currently |
| * mapped to the specified value. |
| * |
| * <p>If a security manager is enabled, its {@code checkSecurityAccess} |
| * method is called with the string {@code "removeProviderProperty."+name}, |
| * where {@code name} is the provider name, to see if it's ok to remove this |
| * provider's properties. |
| * |
| * @throws SecurityException |
| * if a security manager exists and its {@link |
| * java.lang.SecurityManager#checkSecurityAccess} method |
| * denies access to remove this provider's properties. |
| * |
| * @since 1.8 |
| */ |
| @Override |
| public synchronized boolean remove(Object key, Object value) { |
| check("removeProviderProperty."+name); |
| if (debug != null) { |
| debug.println("Remove " + name + " provider property " + key); |
| } |
| return implRemove(key, value); |
| } |
| |
| /** |
| * Replaces the entry for the specified key only if currently |
| * mapped to the specified value. |
| * |
| * <p>If a security manager is enabled, its {@code checkSecurityAccess} |
| * method is called with the string {@code "putProviderProperty."+name}, |
| * where {@code name} is the provider name, to see if it's ok to set this |
| * provider's property values. |
| * |
| * @throws SecurityException |
| * if a security manager exists and its {@link |
| * java.lang.SecurityManager#checkSecurityAccess} method |
| * denies access to set property values. |
| * |
| * @since 1.8 |
| */ |
| @Override |
| public synchronized boolean replace(Object key, Object oldValue, |
| Object newValue) { |
| check("putProviderProperty." + name); |
| |
| if (debug != null) { |
| debug.println("Replace " + name + " provider property " + key); |
| } |
| return implReplace(key, oldValue, newValue); |
| } |
| |
| /** |
| * Replaces the entry for the specified key only if it is |
| * currently mapped to some value. |
| * |
| * <p>If a security manager is enabled, its {@code checkSecurityAccess} |
| * method is called with the string {@code "putProviderProperty."+name}, |
| * where {@code name} is the provider name, to see if it's ok to set this |
| * provider's property values. |
| * |
| * @throws SecurityException |
| * if a security manager exists and its {@link |
| * java.lang.SecurityManager#checkSecurityAccess} method |
| * denies access to set property values. |
| * |
| * @since 1.8 |
| */ |
| @Override |
| public synchronized Object replace(Object key, Object value) { |
| check("putProviderProperty." + name); |
| |
| if (debug != null) { |
| debug.println("Replace " + name + " provider property " + key); |
| } |
| return implReplace(key, value); |
| } |
| |
| /** |
| * Replaces each entry's value with the result of invoking the given |
| * function on that entry, in the order entries are returned by an entry |
| * set iterator, until all entries have been processed or the function |
| * throws an exception. |
| * |
| * <p>If a security manager is enabled, its {@code checkSecurityAccess} |
| * method is called with the string {@code "putProviderProperty."+name}, |
| * where {@code name} is the provider name, to see if it's ok to set this |
| * provider's property values. |
| * |
| * @throws SecurityException |
| * if a security manager exists and its {@link |
| * java.lang.SecurityManager#checkSecurityAccess} method |
| * denies access to set property values. |
| * |
| * @since 1.8 |
| */ |
| @Override |
| public synchronized void replaceAll(BiFunction<? super Object, ? super Object, ? extends Object> function) { |
| check("putProviderProperty." + name); |
| |
| if (debug != null) { |
| debug.println("ReplaceAll " + name + " provider property "); |
| } |
| implReplaceAll(function); |
| } |
| |
| /** |
| * Attempts to compute a mapping for the specified key and its |
| * current mapped value (or {@code null} if there is no current |
| * mapping). |
| * |
| * <p>If a security manager is enabled, its {@code checkSecurityAccess} |
| * method is called with the strings {@code "putProviderProperty."+name} |
| * and {@code "removeProviderProperty."+name}, where {@code name} is the |
| * provider name, to see if it's ok to set this provider's property values |
| * and remove this provider's properties. |
| * |
| * @throws SecurityException |
| * if a security manager exists and its {@link |
| * java.lang.SecurityManager#checkSecurityAccess} method |
| * denies access to set property values or remove properties. |
| * |
| * @since 1.8 |
| */ |
| @Override |
| public synchronized Object compute(Object key, |
| BiFunction<? super Object, ? super Object, ? extends Object> remappingFunction) { |
| check("putProviderProperty." + name); |
| check("removeProviderProperty" + name); |
| |
| if (debug != null) { |
| debug.println("Compute " + name + " provider property " + key); |
| } |
| return implCompute(key, remappingFunction); |
| } |
| |
| /** |
| * If the specified key is not already associated with a value (or |
| * is mapped to {@code null}), attempts to compute its value using |
| * the given mapping function and enters it into this map unless |
| * {@code null}. |
| * |
| * <p>If a security manager is enabled, its {@code checkSecurityAccess} |
| * method is called with the strings {@code "putProviderProperty."+name} |
| * and {@code "removeProviderProperty."+name}, where {@code name} is the |
| * provider name, to see if it's ok to set this provider's property values |
| * and remove this provider's properties. |
| * |
| * @throws SecurityException |
| * if a security manager exists and its {@link |
| * java.lang.SecurityManager#checkSecurityAccess} method |
| * denies access to set property values and remove properties. |
| * |
| * @since 1.8 |
| */ |
| @Override |
| public synchronized Object computeIfAbsent(Object key, Function<? super Object, ? extends Object> mappingFunction) { |
| check("putProviderProperty." + name); |
| check("removeProviderProperty" + name); |
| |
| if (debug != null) { |
| debug.println("ComputeIfAbsent " + name + " provider property " + |
| key); |
| } |
| return implComputeIfAbsent(key, mappingFunction); |
| } |
| |
| /** |
| * If the value for the specified key is present and non-null, attempts to |
| * compute a new mapping given the key and its current mapped value. |
| * |
| * <p>If a security manager is enabled, its {@code checkSecurityAccess} |
| * method is called with the strings {@code "putProviderProperty."+name} |
| * and {@code "removeProviderProperty."+name}, where {@code name} is the |
| * provider name, to see if it's ok to set this provider's property values |
| * and remove this provider's properties. |
| * |
| * @throws SecurityException |
| * if a security manager exists and its {@link |
| * java.lang.SecurityManager#checkSecurityAccess} method |
| * denies access to set property values or remove properties. |
| * |
| * @since 1.8 |
| */ |
| @Override |
| public synchronized Object computeIfPresent(Object key, BiFunction<? super Object, ? super Object, ? extends Object> remappingFunction) { |
| check("putProviderProperty." + name); |
| check("removeProviderProperty" + name); |
| |
| if (debug != null) { |
| debug.println("ComputeIfPresent " + name + " provider property " + |
| key); |
| } |
| return implComputeIfPresent(key, remappingFunction); |
| } |
| |
| /** |
| * If the specified key is not already associated with a value or is |
| * associated with null, associates it with the given value. Otherwise, |
| * replaces the value with the results of the given remapping function, |
| * or removes if the result is null. This method may be of use when |
| * combining multiple mapped values for a key. |
| * |
| * <p>If a security manager is enabled, its {@code checkSecurityAccess} |
| * method is called with the strings {@code "putProviderProperty."+name} |
| * and {@code "removeProviderProperty."+name}, where {@code name} is the |
| * provider name, to see if it's ok to set this provider's property values |
| * and remove this provider's properties. |
| * |
| * @throws SecurityException |
| * if a security manager exists and its {@link |
| * java.lang.SecurityManager#checkSecurityAccess} method |
| * denies access to set property values or remove properties. |
| * |
| * @since 1.8 |
| */ |
| @Override |
| public synchronized Object merge(Object key, Object value, BiFunction<? super Object, ? super Object, ? extends Object> remappingFunction) { |
| check("putProviderProperty." + name); |
| check("removeProviderProperty" + name); |
| |
| if (debug != null) { |
| debug.println("Merge " + name + " provider property " + key); |
| } |
| return implMerge(key, value, remappingFunction); |
| } |
| |
| // let javadoc show doc from superclass |
| @Override |
| public Object get(Object key) { |
| checkInitialized(); |
| return super.get(key); |
| } |
| /** |
| * @since 1.8 |
| */ |
| @Override |
| public synchronized Object getOrDefault(Object key, Object defaultValue) { |
| checkInitialized(); |
| return super.getOrDefault(key, defaultValue); |
| } |
| |
| /** |
| * @since 1.8 |
| */ |
| @Override |
| public synchronized void forEach(BiConsumer<? super Object, ? super Object> action) { |
| checkInitialized(); |
| super.forEach(action); |
| } |
| |
| // let javadoc show doc from superclass |
| @Override |
| public Enumeration<Object> keys() { |
| checkInitialized(); |
| return super.keys(); |
| } |
| |
| // let javadoc show doc from superclass |
| @Override |
| public Enumeration<Object> elements() { |
| checkInitialized(); |
| return super.elements(); |
| } |
| |
| // let javadoc show doc from superclass |
| public String getProperty(String key) { |
| checkInitialized(); |
| return super.getProperty(key); |
| } |
| |
| private void checkInitialized() { |
| if (!initialized) { |
| throw new IllegalStateException(); |
| } |
| } |
| |
| private void check(String directive) { |
| checkInitialized(); |
| SecurityManager security = System.getSecurityManager(); |
| if (security != null) { |
| security.checkSecurityAccess(directive); |
| } |
| } |
| |
| // legacy properties changed since last call to any services method? |
| private transient boolean legacyChanged; |
| // serviceMap changed since last call to getServices() |
| private transient boolean servicesChanged; |
| |
| // Map<String,String> |
| private transient Map<String,String> legacyStrings; |
| |
| // Map<ServiceKey,Service> |
| // used for services added via putService(), initialized on demand |
| private transient Map<ServiceKey,Service> serviceMap; |
| |
| // Map<ServiceKey,Service> |
| // used for services added via legacy methods, init on demand |
| private transient Map<ServiceKey,Service> legacyMap; |
| |
| // Set<Service> |
| // Unmodifiable set of all services. Initialized on demand. |
| private transient Set<Service> serviceSet; |
| |
| // register the id attributes for this provider |
| // this is to ensure that equals() and hashCode() do not incorrectly |
| // report to different provider objects as the same |
| private void putId() { |
| // note: name and info may be null |
| super.put("Provider.id name", String.valueOf(name)); |
| super.put("Provider.id version", String.valueOf(version)); |
| super.put("Provider.id info", String.valueOf(info)); |
| super.put("Provider.id className", this.getClass().getName()); |
| } |
| |
| private void readObject(ObjectInputStream in) |
| throws IOException, ClassNotFoundException { |
| // Android-added: Provider registration. |
| registered = false; |
| Map<Object,Object> copy = new HashMap<>(); |
| for (Map.Entry<Object,Object> entry : super.entrySet()) { |
| copy.put(entry.getKey(), entry.getValue()); |
| } |
| defaults = null; |
| in.defaultReadObject(); |
| implClear(); |
| initialized = true; |
| putAll(copy); |
| } |
| |
| private boolean checkLegacy(Object key) { |
| // Android-added: Provider registration. |
| if (registered) { |
| Security.increaseVersion(); |
| } |
| String keyString = (String)key; |
| if (keyString.startsWith("Provider.")) { |
| return false; |
| } |
| |
| legacyChanged = true; |
| if (legacyStrings == null) { |
| legacyStrings = new LinkedHashMap<String,String>(); |
| } |
| return true; |
| } |
| |
| /** |
| * Copies all of the mappings from the specified Map to this provider. |
| * Internal method to be called AFTER the security check has been |
| * performed. |
| */ |
| private void implPutAll(Map<?,?> t) { |
| for (Map.Entry<?,?> e : t.entrySet()) { |
| implPut(e.getKey(), e.getValue()); |
| } |
| // Android-added: Provider registration. |
| if (registered) { |
| Security.increaseVersion(); |
| } |
| } |
| |
| private Object implRemove(Object key) { |
| if (key instanceof String) { |
| if (!checkLegacy(key)) { |
| return null; |
| } |
| legacyStrings.remove((String)key); |
| } |
| return super.remove(key); |
| } |
| |
| private boolean implRemove(Object key, Object value) { |
| if (key instanceof String && value instanceof String) { |
| if (!checkLegacy(key)) { |
| return false; |
| } |
| legacyStrings.remove((String)key, value); |
| } |
| return super.remove(key, value); |
| } |
| |
| private boolean implReplace(Object key, Object oldValue, Object newValue) { |
| if ((key instanceof String) && (oldValue instanceof String) && |
| (newValue instanceof String)) { |
| if (!checkLegacy(key)) { |
| return false; |
| } |
| legacyStrings.replace((String)key, (String)oldValue, |
| (String)newValue); |
| } |
| return super.replace(key, oldValue, newValue); |
| } |
| |
| private Object implReplace(Object key, Object value) { |
| if ((key instanceof String) && (value instanceof String)) { |
| if (!checkLegacy(key)) { |
| return null; |
| } |
| legacyStrings.replace((String)key, (String)value); |
| } |
| return super.replace(key, value); |
| } |
| |
| private void implReplaceAll(BiFunction<? super Object, ? super Object, ? extends Object> function) { |
| legacyChanged = true; |
| if (legacyStrings == null) { |
| legacyStrings = new LinkedHashMap<String,String>(); |
| } else { |
| legacyStrings.replaceAll((BiFunction<? super String, ? super String, ? extends String>) function); |
| } |
| super.replaceAll(function); |
| } |
| |
| |
| private Object implMerge(Object key, Object value, BiFunction<? super Object, ? super Object, ? extends Object> remappingFunction) { |
| if ((key instanceof String) && (value instanceof String)) { |
| if (!checkLegacy(key)) { |
| return null; |
| } |
| legacyStrings.merge((String)key, (String)value, |
| (BiFunction<? super String, ? super String, ? extends String>) remappingFunction); |
| } |
| return super.merge(key, value, remappingFunction); |
| } |
| |
| private Object implCompute(Object key, BiFunction<? super Object, ? super Object, ? extends Object> remappingFunction) { |
| if (key instanceof String) { |
| if (!checkLegacy(key)) { |
| return null; |
| } |
| // BEGIN Android-changed: use compute(), not computeIfAbsent(), to avoid cast fails. |
| // The upstream code cannot ever succeed as the cast from BiFunction to Function |
| // always fails. |
| // legacyStrings.computeIfAbsent((String) key, |
| // (Function<? super String, ? extends String>) remappingFunction); |
| legacyStrings.compute((String) key, |
| (BiFunction<? super String, ? super String, ? extends String>) |
| remappingFunction); |
| // END Android-changed: use compute(), not computeIfAbsent(), to avoid cast fails. |
| } |
| return super.compute(key, remappingFunction); |
| } |
| |
| private Object implComputeIfAbsent(Object key, Function<? super Object, ? extends Object> mappingFunction) { |
| if (key instanceof String) { |
| if (!checkLegacy(key)) { |
| return null; |
| } |
| legacyStrings.computeIfAbsent((String) key, |
| (Function<? super String, ? extends String>) mappingFunction); |
| } |
| return super.computeIfAbsent(key, mappingFunction); |
| } |
| |
| private Object implComputeIfPresent(Object key, BiFunction<? super Object, ? super Object, ? extends Object> remappingFunction) { |
| if (key instanceof String) { |
| if (!checkLegacy(key)) { |
| return null; |
| } |
| legacyStrings.computeIfPresent((String) key, |
| (BiFunction<? super String, ? super String, ? extends String>) remappingFunction); |
| } |
| return super.computeIfPresent(key, remappingFunction); |
| } |
| |
| private Object implPut(Object key, Object value) { |
| if ((key instanceof String) && (value instanceof String)) { |
| if (!checkLegacy(key)) { |
| return null; |
| } |
| legacyStrings.put((String)key, (String)value); |
| } |
| return super.put(key, value); |
| } |
| |
| private Object implPutIfAbsent(Object key, Object value) { |
| if ((key instanceof String) && (value instanceof String)) { |
| if (!checkLegacy(key)) { |
| return null; |
| } |
| legacyStrings.putIfAbsent((String)key, (String)value); |
| } |
| return super.putIfAbsent(key, value); |
| } |
| |
| private void implClear() { |
| if (legacyStrings != null) { |
| legacyStrings.clear(); |
| } |
| if (legacyMap != null) { |
| legacyMap.clear(); |
| } |
| if (serviceMap != null) { |
| serviceMap.clear(); |
| } |
| legacyChanged = false; |
| servicesChanged = false; |
| serviceSet = null; |
| super.clear(); |
| putId(); |
| // Android-added: Provider registration. |
| if (registered) { |
| Security.increaseVersion(); |
| } |
| } |
| |
| // used as key in the serviceMap and legacyMap HashMaps |
| private static class ServiceKey { |
| private final String type; |
| private final String algorithm; |
| private final String originalAlgorithm; |
| private ServiceKey(String type, String algorithm, boolean intern) { |
| this.type = type; |
| this.originalAlgorithm = algorithm; |
| algorithm = algorithm.toUpperCase(ENGLISH); |
| this.algorithm = intern ? algorithm.intern() : algorithm; |
| } |
| public int hashCode() { |
| return type.hashCode() + algorithm.hashCode(); |
| } |
| public boolean equals(Object obj) { |
| if (this == obj) { |
| return true; |
| } |
| if (obj instanceof ServiceKey == false) { |
| return false; |
| } |
| ServiceKey other = (ServiceKey)obj; |
| return this.type.equals(other.type) |
| && this.algorithm.equals(other.algorithm); |
| } |
| boolean matches(String type, String algorithm) { |
| return (this.type == type) && (this.originalAlgorithm == algorithm); |
| } |
| } |
| |
| /** |
| * Ensure all the legacy String properties are fully parsed into |
| * service objects. |
| */ |
| private void ensureLegacyParsed() { |
| if ((legacyChanged == false) || (legacyStrings == null)) { |
| return; |
| } |
| serviceSet = null; |
| if (legacyMap == null) { |
| legacyMap = new LinkedHashMap<ServiceKey,Service>(); |
| } else { |
| legacyMap.clear(); |
| } |
| for (Map.Entry<String,String> entry : legacyStrings.entrySet()) { |
| parseLegacyPut(entry.getKey(), entry.getValue()); |
| } |
| removeInvalidServices(legacyMap); |
| legacyChanged = false; |
| } |
| |
| /** |
| * Remove all invalid services from the Map. Invalid services can only |
| * occur if the legacy properties are inconsistent or incomplete. |
| */ |
| private void removeInvalidServices(Map<ServiceKey,Service> map) { |
| for (Iterator<Map.Entry<ServiceKey, Service>> t = |
| map.entrySet().iterator(); t.hasNext(); ) { |
| Service s = t.next().getValue(); |
| if (s.isValid() == false) { |
| t.remove(); |
| } |
| } |
| } |
| |
| private String[] getTypeAndAlgorithm(String key) { |
| int i = key.indexOf("."); |
| if (i < 1) { |
| if (debug != null) { |
| debug.println("Ignoring invalid entry in provider " |
| + name + ":" + key); |
| } |
| return null; |
| } |
| String type = key.substring(0, i); |
| String alg = key.substring(i + 1); |
| return new String[] {type, alg}; |
| } |
| |
| private final static String ALIAS_PREFIX = "Alg.Alias."; |
| private final static String ALIAS_PREFIX_LOWER = "alg.alias."; |
| private final static int ALIAS_LENGTH = ALIAS_PREFIX.length(); |
| |
| private void parseLegacyPut(String name, String value) { |
| if (name.toLowerCase(ENGLISH).startsWith(ALIAS_PREFIX_LOWER)) { |
| // e.g. put("Alg.Alias.MessageDigest.SHA", "SHA-1"); |
| // aliasKey ~ MessageDigest.SHA |
| String stdAlg = value; |
| String aliasKey = name.substring(ALIAS_LENGTH); |
| String[] typeAndAlg = getTypeAndAlgorithm(aliasKey); |
| if (typeAndAlg == null) { |
| return; |
| } |
| String type = getEngineName(typeAndAlg[0]); |
| String aliasAlg = typeAndAlg[1].intern(); |
| ServiceKey key = new ServiceKey(type, stdAlg, true); |
| Service s = legacyMap.get(key); |
| if (s == null) { |
| s = new Service(this); |
| s.type = type; |
| s.algorithm = stdAlg; |
| legacyMap.put(key, s); |
| } |
| legacyMap.put(new ServiceKey(type, aliasAlg, true), s); |
| s.addAlias(aliasAlg); |
| } else { |
| String[] typeAndAlg = getTypeAndAlgorithm(name); |
| if (typeAndAlg == null) { |
| return; |
| } |
| int i = typeAndAlg[1].indexOf(' '); |
| if (i == -1) { |
| // e.g. put("MessageDigest.SHA-1", "sun.security.provider.SHA"); |
| String type = getEngineName(typeAndAlg[0]); |
| String stdAlg = typeAndAlg[1].intern(); |
| String className = value; |
| ServiceKey key = new ServiceKey(type, stdAlg, true); |
| Service s = legacyMap.get(key); |
| if (s == null) { |
| s = new Service(this); |
| s.type = type; |
| s.algorithm = stdAlg; |
| legacyMap.put(key, s); |
| } |
| s.className = className; |
| } else { // attribute |
| // e.g. put("MessageDigest.SHA-1 ImplementedIn", "Software"); |
| String attributeValue = value; |
| String type = getEngineName(typeAndAlg[0]); |
| String attributeString = typeAndAlg[1]; |
| String stdAlg = attributeString.substring(0, i).intern(); |
| String attributeName = attributeString.substring(i + 1); |
| // kill additional spaces |
| while (attributeName.startsWith(" ")) { |
| attributeName = attributeName.substring(1); |
| } |
| attributeName = attributeName.intern(); |
| ServiceKey key = new ServiceKey(type, stdAlg, true); |
| Service s = legacyMap.get(key); |
| if (s == null) { |
| s = new Service(this); |
| s.type = type; |
| s.algorithm = stdAlg; |
| legacyMap.put(key, s); |
| } |
| s.addAttribute(attributeName, attributeValue); |
| } |
| } |
| } |
| |
| /** |
| * Get the service describing this Provider's implementation of the |
| * specified type of this algorithm or alias. If no such |
| * implementation exists, this method returns null. If there are two |
| * matching services, one added to this provider using |
| * {@link #putService putService()} and one added via {@link #put put()}, |
| * the service added via {@link #putService putService()} is returned. |
| * |
| * @param type the type of {@link Service service} requested |
| * (for example, {@code MessageDigest}) |
| * @param algorithm the case insensitive algorithm name (or alternate |
| * alias) of the service requested (for example, {@code SHA-1}) |
| * |
| * @return the service describing this Provider's matching service |
| * or null if no such service exists |
| * |
| * @throws NullPointerException if type or algorithm is null |
| * |
| * @since 1.5 |
| */ |
| public synchronized Service getService(String type, String algorithm) { |
| checkInitialized(); |
| // avoid allocating a new key object if possible |
| ServiceKey key = previousKey; |
| if (key.matches(type, algorithm) == false) { |
| key = new ServiceKey(type, algorithm, false); |
| previousKey = key; |
| } |
| if (serviceMap != null) { |
| Service service = serviceMap.get(key); |
| if (service != null) { |
| return service; |
| } |
| } |
| ensureLegacyParsed(); |
| return (legacyMap != null) ? legacyMap.get(key) : null; |
| } |
| |
| // ServiceKey from previous getService() call |
| // by re-using it if possible we avoid allocating a new object |
| // and the toUpperCase() call. |
| // re-use will occur e.g. as the framework traverses the provider |
| // list and queries each provider with the same values until it finds |
| // a matching service |
| private static volatile ServiceKey previousKey = |
| new ServiceKey("", "", false); |
| |
| /** |
| * Get an unmodifiable Set of all services supported by |
| * this Provider. |
| * |
| * @return an unmodifiable Set of all services supported by |
| * this Provider |
| * |
| * @since 1.5 |
| */ |
| public synchronized Set<Service> getServices() { |
| checkInitialized(); |
| if (legacyChanged || servicesChanged) { |
| serviceSet = null; |
| } |
| if (serviceSet == null) { |
| ensureLegacyParsed(); |
| Set<Service> set = new LinkedHashSet<>(); |
| if (serviceMap != null) { |
| set.addAll(serviceMap.values()); |
| } |
| if (legacyMap != null) { |
| set.addAll(legacyMap.values()); |
| } |
| serviceSet = Collections.unmodifiableSet(set); |
| servicesChanged = false; |
| } |
| return serviceSet; |
| } |
| |
| /** |
| * Add a service. If a service of the same type with the same algorithm |
| * name exists and it was added using {@link #putService putService()}, |
| * it is replaced by the new service. |
| * This method also places information about this service |
| * in the provider's Hashtable values in the format described in the |
| * <a href="../../../technotes/guides/security/crypto/CryptoSpec.html"> |
| * Java Cryptography Architecture API Specification & Reference </a>. |
| * |
| * <p>Also, if there is a security manager, its |
| * {@code checkSecurityAccess} method is called with the string |
| * {@code "putProviderProperty."+name}, where {@code name} is |
| * the provider name, to see if it's ok to set this provider's property |
| * values. If the default implementation of {@code checkSecurityAccess} |
| * is used (that is, that method is not overriden), then this results in |
| * a call to the security manager's {@code checkPermission} method with |
| * a {@code SecurityPermission("putProviderProperty."+name)} |
| * permission. |
| * |
| * @param s the Service to add |
| * |
| * @throws SecurityException |
| * if a security manager exists and its {@link |
| * java.lang.SecurityManager#checkSecurityAccess} method denies |
| * access to set property values. |
| * @throws NullPointerException if s is null |
| * |
| * @since 1.5 |
| */ |
| protected synchronized void putService(Service s) { |
| check("putProviderProperty." + name); |
| if (debug != null) { |
| debug.println(name + ".putService(): " + s); |
| } |
| if (s == null) { |
| throw new NullPointerException(); |
| } |
| if (s.getProvider() != this) { |
| throw new IllegalArgumentException |
| ("service.getProvider() must match this Provider object"); |
| } |
| if (serviceMap == null) { |
| serviceMap = new LinkedHashMap<ServiceKey,Service>(); |
| } |
| servicesChanged = true; |
| String type = s.getType(); |
| String algorithm = s.getAlgorithm(); |
| ServiceKey key = new ServiceKey(type, algorithm, true); |
| // remove existing service |
| implRemoveService(serviceMap.get(key)); |
| serviceMap.put(key, s); |
| for (String alias : s.getAliases()) { |
| serviceMap.put(new ServiceKey(type, alias, true), s); |
| } |
| putPropertyStrings(s); |
| } |
| |
| /** |
| * Put the string properties for this Service in this Provider's |
| * Hashtable. |
| */ |
| private void putPropertyStrings(Service s) { |
| String type = s.getType(); |
| String algorithm = s.getAlgorithm(); |
| // use super() to avoid permission check and other processing |
| super.put(type + "." + algorithm, s.getClassName()); |
| for (String alias : s.getAliases()) { |
| super.put(ALIAS_PREFIX + type + "." + alias, algorithm); |
| } |
| for (Map.Entry<UString,String> entry : s.attributes.entrySet()) { |
| String key = type + "." + algorithm + " " + entry.getKey(); |
| super.put(key, entry.getValue()); |
| } |
| // Android-added: Provider registration. |
| if (registered) { |
| Security.increaseVersion(); |
| } |
| } |
| |
| /** |
| * Remove the string properties for this Service from this Provider's |
| * Hashtable. |
| */ |
| private void removePropertyStrings(Service s) { |
| String type = s.getType(); |
| String algorithm = s.getAlgorithm(); |
| // use super() to avoid permission check and other processing |
| super.remove(type + "." + algorithm); |
| for (String alias : s.getAliases()) { |
| super.remove(ALIAS_PREFIX + type + "." + alias); |
| } |
| for (Map.Entry<UString,String> entry : s.attributes.entrySet()) { |
| String key = type + "." + algorithm + " " + entry.getKey(); |
| super.remove(key); |
| } |
| // Android-added: Provider registration. |
| if (registered) { |
| Security.increaseVersion(); |
| } |
| } |
| |
| /** |
| * Remove a service previously added using |
| * {@link #putService putService()}. The specified service is removed from |
| * this provider. It will no longer be returned by |
| * {@link #getService getService()} and its information will be removed |
| * from this provider's Hashtable. |
| * |
| * <p>Also, if there is a security manager, its |
| * {@code checkSecurityAccess} method is called with the string |
| * {@code "removeProviderProperty."+name}, where {@code name} is |
| * the provider name, to see if it's ok to remove this provider's |
| * properties. If the default implementation of |
| * {@code checkSecurityAccess} is used (that is, that method is not |
| * overriden), then this results in a call to the security manager's |
| * {@code checkPermission} method with a |
| * {@code SecurityPermission("removeProviderProperty."+name)} |
| * permission. |
| * |
| * @param s the Service to be removed |
| * |
| * @throws SecurityException |
| * if a security manager exists and its {@link |
| * java.lang.SecurityManager#checkSecurityAccess} method denies |
| * access to remove this provider's properties. |
| * @throws NullPointerException if s is null |
| * |
| * @since 1.5 |
| */ |
| protected synchronized void removeService(Service s) { |
| check("removeProviderProperty." + name); |
| if (debug != null) { |
| debug.println(name + ".removeService(): " + s); |
| } |
| if (s == null) { |
| throw new NullPointerException(); |
| } |
| implRemoveService(s); |
| } |
| |
| private void implRemoveService(Service s) { |
| if ((s == null) || (serviceMap == null)) { |
| return; |
| } |
| String type = s.getType(); |
| String algorithm = s.getAlgorithm(); |
| ServiceKey key = new ServiceKey(type, algorithm, false); |
| Service oldService = serviceMap.get(key); |
| if (s != oldService) { |
| return; |
| } |
| servicesChanged = true; |
| serviceMap.remove(key); |
| for (String alias : s.getAliases()) { |
| serviceMap.remove(new ServiceKey(type, alias, false)); |
| } |
| removePropertyStrings(s); |
| } |
| |
| // Wrapped String that behaves in a case insensitive way for equals/hashCode |
| private static class UString { |
| final String string; |
| final String lowerString; |
| |
| UString(String s) { |
| this.string = s; |
| this.lowerString = s.toLowerCase(ENGLISH); |
| } |
| |
| public int hashCode() { |
| return lowerString.hashCode(); |
| } |
| |
| public boolean equals(Object obj) { |
| if (this == obj) { |
| return true; |
| } |
| if (obj instanceof UString == false) { |
| return false; |
| } |
| UString other = (UString)obj; |
| return lowerString.equals(other.lowerString); |
| } |
| |
| public String toString() { |
| return string; |
| } |
| } |
| |
| // describe relevant properties of a type of engine |
| private static class EngineDescription { |
| final String name; |
| final boolean supportsParameter; |
| final String constructorParameterClassName; |
| private volatile Class<?> constructorParameterClass; |
| |
| EngineDescription(String name, boolean sp, String paramName) { |
| this.name = name; |
| this.supportsParameter = sp; |
| this.constructorParameterClassName = paramName; |
| } |
| Class<?> getConstructorParameterClass() throws ClassNotFoundException { |
| Class<?> clazz = constructorParameterClass; |
| if (clazz == null) { |
| clazz = Class.forName(constructorParameterClassName); |
| constructorParameterClass = clazz; |
| } |
| return clazz; |
| } |
| } |
| |
| // built in knowledge of the engine types shipped as part of the JDK |
| private static final Map<String,EngineDescription> knownEngines; |
| |
| private static void addEngine(String name, boolean sp, String paramName) { |
| EngineDescription ed = new EngineDescription(name, sp, paramName); |
| // also index by canonical name to avoid toLowerCase() for some lookups |
| knownEngines.put(name.toLowerCase(ENGLISH), ed); |
| knownEngines.put(name, ed); |
| } |
| |
| static { |
| knownEngines = new HashMap<String,EngineDescription>(); |
| // JCA |
| addEngine("AlgorithmParameterGenerator", false, null); |
| addEngine("AlgorithmParameters", false, null); |
| addEngine("KeyFactory", false, null); |
| addEngine("KeyPairGenerator", false, null); |
| addEngine("KeyStore", false, null); |
| addEngine("MessageDigest", false, null); |
| addEngine("SecureRandom", false, null); |
| addEngine("Signature", true, null); |
| addEngine("CertificateFactory", false, null); |
| addEngine("CertPathBuilder", false, null); |
| addEngine("CertPathValidator", false, null); |
| addEngine("CertStore", false, |
| "java.security.cert.CertStoreParameters"); |
| // JCE |
| addEngine("Cipher", true, null); |
| addEngine("ExemptionMechanism", false, null); |
| addEngine("Mac", true, null); |
| addEngine("KeyAgreement", true, null); |
| addEngine("KeyGenerator", false, null); |
| addEngine("SecretKeyFactory", false, null); |
| // JSSE |
| addEngine("KeyManagerFactory", false, null); |
| addEngine("SSLContext", false, null); |
| addEngine("TrustManagerFactory", false, null); |
| // JGSS |
| addEngine("GssApiMechanism", false, null); |
| // SASL |
| addEngine("SaslClientFactory", false, null); |
| addEngine("SaslServerFactory", false, null); |
| // POLICY |
| addEngine("Policy", false, |
| "java.security.Policy$Parameters"); |
| // CONFIGURATION |
| addEngine("Configuration", false, |
| "javax.security.auth.login.Configuration$Parameters"); |
| // XML DSig |
| addEngine("XMLSignatureFactory", false, null); |
| addEngine("KeyInfoFactory", false, null); |
| addEngine("TransformService", false, null); |
| // Smart Card I/O |
| addEngine("TerminalFactory", false, |
| "java.lang.Object"); |
| } |
| |
| // get the "standard" (mixed-case) engine name for arbitary case engine name |
| // if there is no known engine by that name, return s |
| private static String getEngineName(String s) { |
| // try original case first, usually correct |
| EngineDescription e = knownEngines.get(s); |
| if (e == null) { |
| e = knownEngines.get(s.toLowerCase(ENGLISH)); |
| } |
| return (e == null) ? s : e.name; |
| } |
| |
| /** |
| * The description of a security service. It encapsulates the properties |
| * of a service and contains a factory method to obtain new implementation |
| * instances of this service. |
| * |
| * <p>Each service has a provider that offers the service, a type, |
| * an algorithm name, and the name of the class that implements the |
| * service. Optionally, it also includes a list of alternate algorithm |
| * names for this service (aliases) and attributes, which are a map of |
| * (name, value) String pairs. |
| * |
| * <p>This class defines the methods {@link #supportsParameter |
| * supportsParameter()} and {@link #newInstance newInstance()} |
| * which are used by the Java security framework when it searches for |
| * suitable services and instantiates them. The valid arguments to those |
| * methods depend on the type of service. For the service types defined |
| * within Java SE, see the |
| * <a href="../../../technotes/guides/security/crypto/CryptoSpec.html"> |
| * Java Cryptography Architecture API Specification & Reference </a> |
| * for the valid values. |
| * Note that components outside of Java SE can define additional types of |
| * services and their behavior. |
| * |
| * <p>Instances of this class are immutable. |
| * |
| * @since 1.5 |
| */ |
| public static class Service { |
| |
| private String type, algorithm, className; |
| private final Provider provider; |
| private List<String> aliases; |
| private Map<UString,String> attributes; |
| |
| // Reference to the cached implementation Class object |
| private volatile Reference<Class<?>> classRef; |
| |
| // flag indicating whether this service has its attributes for |
| // supportedKeyFormats or supportedKeyClasses set |
| // if null, the values have not been initialized |
| // if TRUE, at least one of supportedFormats/Classes is non null |
| private volatile Boolean hasKeyAttributes; |
| |
| // supported encoding formats |
| private String[] supportedFormats; |
| |
| // names of the supported key (super) classes |
| private Class[] supportedClasses; |
| |
| // whether this service has been registered with the Provider |
| private boolean registered; |
| |
| private static final Class<?>[] CLASS0 = new Class<?>[0]; |
| |
| // this constructor and these methods are used for parsing |
| // the legacy string properties. |
| |
| private Service(Provider provider) { |
| this.provider = provider; |
| aliases = Collections.<String>emptyList(); |
| attributes = Collections.<UString,String>emptyMap(); |
| } |
| |
| private boolean isValid() { |
| return (type != null) && (algorithm != null) && (className != null); |
| } |
| |
| private void addAlias(String alias) { |
| if (aliases.isEmpty()) { |
| aliases = new ArrayList<String>(2); |
| } |
| aliases.add(alias); |
| } |
| |
| void addAttribute(String type, String value) { |
| if (attributes.isEmpty()) { |
| attributes = new HashMap<UString,String>(8); |
| } |
| attributes.put(new UString(type), value); |
| } |
| |
| /** |
| * Construct a new service. |
| * |
| * @param provider the provider that offers this service |
| * @param type the type of this service |
| * @param algorithm the algorithm name |
| * @param className the name of the class implementing this service |
| * @param aliases List of aliases or null if algorithm has no aliases |
| * @param attributes Map of attributes or null if this implementation |
| * has no attributes |
| * |
| * @throws NullPointerException if provider, type, algorithm, or |
| * className is null |
| */ |
| public Service(Provider provider, String type, String algorithm, |
| String className, List<String> aliases, |
| Map<String,String> attributes) { |
| if ((provider == null) || (type == null) || |
| (algorithm == null) || (className == null)) { |
| throw new NullPointerException(); |
| } |
| this.provider = provider; |
| this.type = getEngineName(type); |
| this.algorithm = algorithm; |
| this.className = className; |
| if (aliases == null) { |
| this.aliases = Collections.<String>emptyList(); |
| } else { |
| this.aliases = new ArrayList<String>(aliases); |
| } |
| if (attributes == null) { |
| this.attributes = Collections.<UString,String>emptyMap(); |
| } else { |
| this.attributes = new HashMap<UString,String>(); |
| for (Map.Entry<String,String> entry : attributes.entrySet()) { |
| this.attributes.put(new UString(entry.getKey()), entry.getValue()); |
| } |
| } |
| } |
| |
| /** |
| * Get the type of this service. For example, {@code MessageDigest}. |
| * |
| * @return the type of this service |
| */ |
| public final String getType() { |
| return type; |
| } |
| |
| /** |
| * Return the name of the algorithm of this service. For example, |
| * {@code SHA-1}. |
| * |
| * @return the algorithm of this service |
| */ |
| public final String getAlgorithm() { |
| return algorithm; |
| } |
| |
| /** |
| * Return the Provider of this service. |
| * |
| * @return the Provider of this service |
| */ |
| public final Provider getProvider() { |
| return provider; |
| } |
| |
| /** |
| * Return the name of the class implementing this service. |
| * |
| * @return the name of the class implementing this service |
| */ |
| public final String getClassName() { |
| return className; |
| } |
| |
| // internal only |
| private final List<String> getAliases() { |
| return aliases; |
| } |
| |
| /** |
| * Return the value of the specified attribute or null if this |
| * attribute is not set for this Service. |
| * |
| * @param name the name of the requested attribute |
| * |
| * @return the value of the specified attribute or null if the |
| * attribute is not present |
| * |
| * @throws NullPointerException if name is null |
| */ |
| public final String getAttribute(String name) { |
| if (name == null) { |
| throw new NullPointerException(); |
| } |
| return attributes.get(new UString(name)); |
| } |
| |
| /** |
| * Return a new instance of the implementation described by this |
| * service. The security provider framework uses this method to |
| * construct implementations. Applications will typically not need |
| * to call it. |
| * |
| * <p>The default implementation uses reflection to invoke the |
| * standard constructor for this type of service. |
| * Security providers can override this method to implement |
| * instantiation in a different way. |
| * For details and the values of constructorParameter that are |
| * valid for the various types of services see the |
| * <a href="../../../technotes/guides/security/crypto/CryptoSpec.html"> |
| * Java Cryptography Architecture API Specification & |
| * Reference</a>. |
| * |
| * @param constructorParameter the value to pass to the constructor, |
| * or null if this type of service does not use a constructorParameter. |
| * |
| * @return a new implementation of this service |
| * |
| * @throws InvalidParameterException if the value of |
| * constructorParameter is invalid for this type of service. |
| * @throws NoSuchAlgorithmException if instantiation failed for |
| * any other reason. |
| */ |
| public Object newInstance(Object constructorParameter) |
| throws NoSuchAlgorithmException { |
| if (registered == false) { |
| if (provider.getService(type, algorithm) != this) { |
| throw new NoSuchAlgorithmException |
| ("Service not registered with Provider " |
| + provider.getName() + ": " + this); |
| } |
| registered = true; |
| } |
| try { |
| EngineDescription cap = knownEngines.get(type); |
| if (cap == null) { |
| // unknown engine type, use generic code |
| // this is the code path future for non-core |
| // optional packages |
| return newInstanceGeneric(constructorParameter); |
| } |
| if (cap.constructorParameterClassName == null) { |
| if (constructorParameter != null) { |
| throw new InvalidParameterException |
| ("constructorParameter not used with " + type |
| + " engines"); |
| } |
| Class<?> clazz = getImplClass(); |
| Class<?>[] empty = {}; |
| Constructor<?> con = clazz.getConstructor(empty); |
| return con.newInstance(); |
| } else { |
| Class<?> paramClass = cap.getConstructorParameterClass(); |
| if (constructorParameter != null) { |
| Class<?> argClass = constructorParameter.getClass(); |
| if (paramClass.isAssignableFrom(argClass) == false) { |
| throw new InvalidParameterException |
| ("constructorParameter must be instanceof " |
| + cap.constructorParameterClassName.replace('$', '.') |
| + " for engine type " + type); |
| } |
| } |
| Class<?> clazz = getImplClass(); |
| Constructor<?> cons = clazz.getConstructor(paramClass); |
| return cons.newInstance(constructorParameter); |
| } |
| } catch (NoSuchAlgorithmException e) { |
| throw e; |
| } catch (InvocationTargetException e) { |
| throw new NoSuchAlgorithmException |
| ("Error constructing implementation (algorithm: " |
| + algorithm + ", provider: " + provider.getName() |
| + ", class: " + className + ")", e.getCause()); |
| } catch (Exception e) { |
| throw new NoSuchAlgorithmException |
| ("Error constructing implementation (algorithm: " |
| + algorithm + ", provider: " + provider.getName() |
| + ", class: " + className + ")", e); |
| } |
| } |
| |
| // return the implementation Class object for this service |
| private Class<?> getImplClass() throws NoSuchAlgorithmException { |
| try { |
| Reference<Class<?>> ref = classRef; |
| Class<?> clazz = (ref == null) ? null : ref.get(); |
| if (clazz == null) { |
| ClassLoader cl = provider.getClass().getClassLoader(); |
| if (cl == null) { |
| clazz = Class.forName(className); |
| } else { |
| clazz = cl.loadClass(className); |
| } |
| if (!Modifier.isPublic(clazz.getModifiers())) { |
| throw new NoSuchAlgorithmException |
| ("class configured for " + type + " (provider: " + |
| provider.getName() + ") is not public."); |
| } |
| classRef = new WeakReference<Class<?>>(clazz); |
| } |
| return clazz; |
| } catch (ClassNotFoundException e) { |
| throw new NoSuchAlgorithmException |
| ("class configured for " + type + " (provider: " + |
| provider.getName() + ") cannot be found.", e); |
| } |
| } |
| |
| /** |
| * Generic code path for unknown engine types. Call the |
| * no-args constructor if constructorParameter is null, otherwise |
| * use the first matching constructor. |
| */ |
| private Object newInstanceGeneric(Object constructorParameter) |
| throws Exception { |
| Class<?> clazz = getImplClass(); |
| if (constructorParameter == null) { |
| // create instance with public no-arg constructor if it exists |
| try { |
| Class<?>[] empty = {}; |
| Constructor<?> con = clazz.getConstructor(empty); |
| return con.newInstance(); |
| } catch (NoSuchMethodException e) { |
| throw new NoSuchAlgorithmException("No public no-arg " |
| + "constructor found in class " + className); |
| } |
| } |
| Class<?> argClass = constructorParameter.getClass(); |
| Constructor[] cons = clazz.getConstructors(); |
| // find first public constructor that can take the |
| // argument as parameter |
| for (Constructor<?> con : cons) { |
| Class<?>[] paramTypes = con.getParameterTypes(); |
| if (paramTypes.length != 1) { |
| continue; |
| } |
| if (paramTypes[0].isAssignableFrom(argClass) == false) { |
| continue; |
| } |
| return con.newInstance(constructorParameter); |
| } |
| throw new NoSuchAlgorithmException("No public constructor matching " |
| + argClass.getName() + " found in class " + className); |
| } |
| |
| /** |
| * Test whether this Service can use the specified parameter. |
| * Returns false if this service cannot use the parameter. Returns |
| * true if this service can use the parameter, if a fast test is |
| * infeasible, or if the status is unknown. |
| * |
| * <p>The security provider framework uses this method with |
| * some types of services to quickly exclude non-matching |
| * implementations for consideration. |
| * Applications will typically not need to call it. |
| * |
| * <p>For details and the values of parameter that are valid for the |
| * various types of services see the top of this class and the |
| * <a href="../../../technotes/guides/security/crypto/CryptoSpec.html"> |
| * Java Cryptography Architecture API Specification & |
| * Reference</a>. |
| * Security providers can override it to implement their own test. |
| * |
| * @param parameter the parameter to test |
| * |
| * @return false if this this service cannot use the specified |
| * parameter; true if it can possibly use the parameter |
| * |
| * @throws InvalidParameterException if the value of parameter is |
| * invalid for this type of service or if this method cannot be |
| * used with this type of service |
| */ |
| public boolean supportsParameter(Object parameter) { |
| EngineDescription cap = knownEngines.get(type); |
| if (cap == null) { |
| // unknown engine type, return true by default |
| return true; |
| } |
| if (cap.supportsParameter == false) { |
| throw new InvalidParameterException("supportsParameter() not " |
| + "used with " + type + " engines"); |
| } |
| // allow null for keys without attributes for compatibility |
| if ((parameter != null) && (parameter instanceof Key == false)) { |
| throw new InvalidParameterException |
| ("Parameter must be instanceof Key for engine " + type); |
| } |
| if (hasKeyAttributes() == false) { |
| return true; |
| } |
| if (parameter == null) { |
| return false; |
| } |
| Key key = (Key)parameter; |
| if (supportsKeyFormat(key)) { |
| return true; |
| } |
| if (supportsKeyClass(key)) { |
| return true; |
| } |
| return false; |
| } |
| |
| /** |
| * Return whether this service has its Supported* properties for |
| * keys defined. Parses the attributes if not yet initialized. |
| */ |
| private boolean hasKeyAttributes() { |
| Boolean b = hasKeyAttributes; |
| if (b == null) { |
| synchronized (this) { |
| String s; |
| s = getAttribute("SupportedKeyFormats"); |
| if (s != null) { |
| supportedFormats = s.split("\\|"); |
| } |
| s = getAttribute("SupportedKeyClasses"); |
| if (s != null) { |
| String[] classNames = s.split("\\|"); |
| List<Class<?>> classList = |
| new ArrayList<>(classNames.length); |
| for (String className : classNames) { |
| Class<?> clazz = getKeyClass(className); |
| if (clazz != null) { |
| classList.add(clazz); |
| } |
| } |
| supportedClasses = classList.toArray(CLASS0); |
| } |
| boolean bool = (supportedFormats != null) |
| || (supportedClasses != null); |
| b = Boolean.valueOf(bool); |
| hasKeyAttributes = b; |
| } |
| } |
| return b.booleanValue(); |
| } |
| |
| // get the key class object of the specified name |
| private Class<?> getKeyClass(String name) { |
| try { |
| return Class.forName(name); |
| } catch (ClassNotFoundException e) { |
| // ignore |
| } |
| try { |
| ClassLoader cl = provider.getClass().getClassLoader(); |
| if (cl != null) { |
| return cl.loadClass(name); |
| } |
| } catch (ClassNotFoundException e) { |
| // ignore |
| } |
| return null; |
| } |
| |
| private boolean supportsKeyFormat(Key key) { |
| if (supportedFormats == null) { |
| return false; |
| } |
| String format = key.getFormat(); |
| if (format == null) { |
| return false; |
| } |
| for (String supportedFormat : supportedFormats) { |
| if (supportedFormat.equals(format)) { |
| return true; |
| } |
| } |
| return false; |
| } |
| |
| private boolean supportsKeyClass(Key key) { |
| if (supportedClasses == null) { |
| return false; |
| } |
| Class<?> keyClass = key.getClass(); |
| for (Class<?> clazz : supportedClasses) { |
| if (clazz.isAssignableFrom(keyClass)) { |
| return true; |
| } |
| } |
| return false; |
| } |
| |
| /** |
| * Return a String representation of this service. |
| * |
| * @return a String representation of this service. |
| */ |
| public String toString() { |
| String aString = aliases.isEmpty() |
| ? "" : "\r\n aliases: " + aliases.toString(); |
| String attrs = attributes.isEmpty() |
| ? "" : "\r\n attributes: " + attributes.toString(); |
| return provider.getName() + ": " + type + "." + algorithm |
| + " -> " + className + aString + attrs + "\r\n"; |
| } |
| |
| } |
| |
| // BEGIN Android-added: Provider registration. |
| /** |
| * @hide |
| */ |
| public void setRegistered() { |
| registered = true; |
| } |
| |
| /** |
| * @hide |
| */ |
| public void setUnregistered() { |
| registered = false; |
| } |
| |
| /** |
| * @hide |
| */ |
| public boolean isRegistered() { |
| return registered; |
| } |
| |
| /** |
| * Ensure the values cached by {@link #getServices} and {@link #getService} are already computed |
| * |
| * Used by the zygote so that initialization is performed during preload for the providers |
| * available at that point. |
| * |
| * @hide |
| */ |
| public synchronized void warmUpServiceProvision() { |
| checkInitialized(); |
| // Further calls do nothing if the services didn't change. If not called here, it would |
| // parse legacy strings the first time that a service is requested. |
| ensureLegacyParsed(); |
| // This call to getServices will update fields so that further calls will just return a |
| // stored field, if the services didn't change in the meantime. |
| getServices(); |
| } |
| // END Android-added: Provider registration. |
| } |
