author | mchung |
Tue, 06 Nov 2018 10:01:16 -0800 | |
changeset 52427 | 3c6aa484536c |
parent 51759 | ac6e9a2ebc04 |
child 52621 | f7309a1491d9 |
permissions | -rw-r--r-- |
2 | 1 |
/* |
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* Copyright (c) 1996, 2018, Oracle and/or its affiliates. All rights reserved. |
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. Oracle designates this |
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* particular file as subject to the "Classpath" exception as provided |
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* by Oracle in the LICENSE file that accompanied this code. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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* or visit www.oracle.com if you need additional information or have any |
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* questions. |
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*/ |
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package java.security; |
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import java.util.*; |
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import java.util.concurrent.ConcurrentHashMap; |
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import java.io.*; |
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import java.net.URL; |
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import jdk.internal.access.SharedSecrets; |
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import jdk.internal.util.StaticProperty; |
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import sun.security.util.Debug; |
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import sun.security.util.PropertyExpander; |
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import sun.security.jca.*; |
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/** |
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* <p>This class centralizes all security properties and common security |
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* methods. One of its primary uses is to manage providers. |
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* |
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* <p>The default values of security properties are read from an |
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* implementation-specific location, which is typically the properties file |
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* {@code conf/security/java.security} in the Java installation directory. |
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* |
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* @author Benjamin Renaud |
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* @since 1.1 |
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*/ |
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public final class Security { |
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/* Are we debugging? -- for developers */ |
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private static final Debug sdebug = |
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Debug.getInstance("properties"); |
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/* The java.security properties */ |
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private static Properties props; |
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// An element in the cache |
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private static class ProviderProperty { |
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String className; |
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Provider provider; |
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} |
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static { |
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// doPrivileged here because there are multiple |
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// things in initialize that might require privs. |
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// (the FileInputStream call and the File.exists call, |
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// the securityPropFile call, etc) |
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AccessController.doPrivileged(new PrivilegedAction<>() { |
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public Void run() { |
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initialize(); |
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return null; |
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} |
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}); |
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} |
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private static void initialize() { |
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props = new Properties(); |
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boolean loadedProps = false; |
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boolean overrideAll = false; |
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// first load the system properties file |
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// to determine the value of security.overridePropertiesFile |
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File propFile = securityPropFile("java.security"); |
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if (propFile.exists()) { |
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InputStream is = null; |
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try { |
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FileInputStream fis = new FileInputStream(propFile); |
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is = new BufferedInputStream(fis); |
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props.load(is); |
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loadedProps = true; |
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if (sdebug != null) { |
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sdebug.println("reading security properties file: " + |
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propFile); |
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} |
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} catch (IOException e) { |
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if (sdebug != null) { |
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sdebug.println("unable to load security properties from " + |
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propFile); |
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e.printStackTrace(); |
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} |
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} finally { |
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if (is != null) { |
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try { |
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is.close(); |
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} catch (IOException ioe) { |
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if (sdebug != null) { |
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sdebug.println("unable to close input stream"); |
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} |
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} |
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} |
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} |
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} |
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if ("true".equalsIgnoreCase(props.getProperty |
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("security.overridePropertiesFile"))) { |
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String extraPropFile = System.getProperty |
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("java.security.properties"); |
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if (extraPropFile != null && extraPropFile.startsWith("=")) { |
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overrideAll = true; |
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extraPropFile = extraPropFile.substring(1); |
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} |
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if (overrideAll) { |
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props = new Properties(); |
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if (sdebug != null) { |
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sdebug.println |
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("overriding other security properties files!"); |
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} |
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} |
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// now load the user-specified file so its values |
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// will win if they conflict with the earlier values |
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if (extraPropFile != null) { |
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BufferedInputStream bis = null; |
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try { |
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URL propURL; |
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extraPropFile = PropertyExpander.expand(extraPropFile); |
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propFile = new File(extraPropFile); |
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if (propFile.exists()) { |
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propURL = new URL |
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("file:" + propFile.getCanonicalPath()); |
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} else { |
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propURL = new URL(extraPropFile); |
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} |
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bis = new BufferedInputStream(propURL.openStream()); |
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props.load(bis); |
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loadedProps = true; |
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if (sdebug != null) { |
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sdebug.println("reading security properties file: " + |
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propURL); |
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if (overrideAll) { |
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sdebug.println |
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("overriding other security properties files!"); |
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} |
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} |
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} catch (Exception e) { |
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if (sdebug != null) { |
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sdebug.println |
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("unable to load security properties from " + |
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extraPropFile); |
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e.printStackTrace(); |
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} |
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} finally { |
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if (bis != null) { |
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try { |
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bis.close(); |
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} catch (IOException ioe) { |
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if (sdebug != null) { |
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sdebug.println("unable to close input stream"); |
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} |
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} |
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} |
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} |
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} |
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} |
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if (!loadedProps) { |
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initializeStatic(); |
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if (sdebug != null) { |
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sdebug.println("unable to load security properties " + |
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"-- using defaults"); |
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} |
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} |
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} |
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/* |
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* Initialize to default values, if <java.home>/lib/java.security |
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* is not found. |
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*/ |
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private static void initializeStatic() { |
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props.put("security.provider.1", "sun.security.provider.Sun"); |
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props.put("security.provider.2", "sun.security.rsa.SunRsaSign"); |
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props.put("security.provider.3", "com.sun.net.ssl.internal.ssl.Provider"); |
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props.put("security.provider.4", "com.sun.crypto.provider.SunJCE"); |
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props.put("security.provider.5", "sun.security.jgss.SunProvider"); |
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props.put("security.provider.6", "com.sun.security.sasl.Provider"); |
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} |
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/** |
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* Don't let anyone instantiate this. |
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*/ |
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private Security() { |
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} |
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private static File securityPropFile(String filename) { |
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// maybe check for a system property which will specify where to |
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// look. Someday. |
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String sep = File.separator; |
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return new File(StaticProperty.javaHome() + sep + "conf" + sep + |
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"security" + sep + filename); |
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} |
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/** |
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* Looks up providers, and returns the property (and its associated |
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* provider) mapping the key, if any. |
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* The order in which the providers are looked up is the |
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* provider-preference order, as specificed in the security |
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* properties file. |
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*/ |
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private static ProviderProperty getProviderProperty(String key) { |
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ProviderProperty entry = null; |
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List<Provider> providers = Providers.getProviderList().providers(); |
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for (int i = 0; i < providers.size(); i++) { |
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String matchKey = null; |
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Provider prov = providers.get(i); |
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String prop = prov.getProperty(key); |
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if (prop == null) { |
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// Is there a match if we do a case-insensitive property name |
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// comparison? Let's try ... |
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for (Enumeration<Object> e = prov.keys(); |
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e.hasMoreElements() && prop == null; ) { |
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matchKey = (String)e.nextElement(); |
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if (key.equalsIgnoreCase(matchKey)) { |
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prop = prov.getProperty(matchKey); |
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break; |
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} |
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} |
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} |
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if (prop != null) { |
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ProviderProperty newEntry = new ProviderProperty(); |
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newEntry.className = prop; |
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newEntry.provider = prov; |
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return newEntry; |
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} |
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} |
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return entry; |
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} |
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/** |
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* Returns the property (if any) mapping the key for the given provider. |
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*/ |
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private static String getProviderProperty(String key, Provider provider) { |
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String prop = provider.getProperty(key); |
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if (prop == null) { |
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// Is there a match if we do a case-insensitive property name |
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// comparison? Let's try ... |
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for (Enumeration<Object> e = provider.keys(); |
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e.hasMoreElements() && prop == null; ) { |
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String matchKey = (String)e.nextElement(); |
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if (key.equalsIgnoreCase(matchKey)) { |
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prop = provider.getProperty(matchKey); |
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break; |
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} |
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} |
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} |
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return prop; |
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} |
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/** |
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* Gets a specified property for an algorithm. The algorithm name |
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* should be a standard name. See the <a href= |
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* "{@docRoot}/../specs/security/standard-names.html"> |
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* Java Security Standard Algorithm Names Specification</a> |
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* for information about standard algorithm names. |
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* |
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* One possible use is by specialized algorithm parsers, which may map |
291 |
* classes to algorithms which they understand (much like Key parsers |
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292 |
* do). |
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293 |
* |
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* @param algName the algorithm name. |
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295 |
* |
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296 |
* @param propName the name of the property to get. |
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297 |
* |
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298 |
* @return the value of the specified property. |
|
299 |
* |
|
300 |
* @deprecated This method used to return the value of a proprietary |
|
301 |
* property in the master file of the "SUN" Cryptographic Service |
|
302 |
* Provider in order to determine how to parse algorithm-specific |
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303 |
* parameters. Use the new provider-based and algorithm-independent |
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* {@code AlgorithmParameters} and {@code KeyFactory} engine |
2 | 305 |
* classes (introduced in the J2SE version 1.2 platform) instead. |
306 |
*/ |
|
307 |
@Deprecated |
|
308 |
public static String getAlgorithmProperty(String algName, |
|
309 |
String propName) { |
|
310 |
ProviderProperty entry = getProviderProperty("Alg." + propName |
|
311 |
+ "." + algName); |
|
312 |
if (entry != null) { |
|
313 |
return entry.className; |
|
314 |
} else { |
|
315 |
return null; |
|
316 |
} |
|
317 |
} |
|
318 |
||
319 |
/** |
|
320 |
* Adds a new provider, at a specified position. The position is |
|
321 |
* the preference order in which providers are searched for |
|
322 |
* requested algorithms. The position is 1-based, that is, |
|
323 |
* 1 is most preferred, followed by 2, and so on. |
|
324 |
* |
|
325 |
* <p>If the given provider is installed at the requested position, |
|
326 |
* the provider that used to be at that position, and all providers |
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327 |
* with a position greater than {@code position}, are shifted up |
2 | 328 |
* one position (towards the end of the list of installed providers). |
329 |
* |
|
330 |
* <p>A provider cannot be added if it is already installed. |
|
331 |
* |
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* <p>If there is a security manager, the |
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* {@link java.lang.SecurityManager#checkSecurityAccess} method is called |
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* with the {@code "insertProvider"} permission target name to see if |
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* it's ok to add a new provider. If this permission check is denied, |
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* {@code checkSecurityAccess} is called again with the |
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* {@code "insertProvider."+provider.getName()} permission target name. If |
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|
338 |
* both checks are denied, a {@code SecurityException} is thrown. |
2 | 339 |
* |
340 |
* @param provider the provider to be added. |
|
341 |
* |
|
342 |
* @param position the preference position that the caller would |
|
343 |
* like for this provider. |
|
344 |
* |
|
345 |
* @return the actual preference position in which the provider was |
|
346 |
* added, or -1 if the provider was not added because it is |
|
347 |
* already installed. |
|
348 |
* |
|
349 |
* @throws NullPointerException if provider is null |
|
350 |
* @throws SecurityException |
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* if a security manager exists and its {@link |
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352 |
* java.lang.SecurityManager#checkSecurityAccess} method |
2 | 353 |
* denies access to add a new provider |
354 |
* |
|
355 |
* @see #getProvider |
|
356 |
* @see #removeProvider |
|
357 |
* @see java.security.SecurityPermission |
|
358 |
*/ |
|
359 |
public static synchronized int insertProviderAt(Provider provider, |
|
360 |
int position) { |
|
361 |
String providerName = provider.getName(); |
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|
362 |
checkInsertProvider(providerName); |
2 | 363 |
ProviderList list = Providers.getFullProviderList(); |
364 |
ProviderList newList = ProviderList.insertAt(list, provider, position - 1); |
|
365 |
if (list == newList) { |
|
366 |
return -1; |
|
367 |
} |
|
368 |
Providers.setProviderList(newList); |
|
369 |
return newList.getIndex(providerName) + 1; |
|
370 |
} |
|
371 |
||
372 |
/** |
|
373 |
* Adds a provider to the next position available. |
|
374 |
* |
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|
375 |
* <p>If there is a security manager, the |
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* {@link java.lang.SecurityManager#checkSecurityAccess} method is called |
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377 |
* with the {@code "insertProvider"} permission target name to see if |
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|
378 |
* it's ok to add a new provider. If this permission check is denied, |
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|
379 |
* {@code checkSecurityAccess} is called again with the |
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|
380 |
* {@code "insertProvider."+provider.getName()} permission target name. If |
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|
381 |
* both checks are denied, a {@code SecurityException} is thrown. |
2 | 382 |
* |
383 |
* @param provider the provider to be added. |
|
384 |
* |
|
385 |
* @return the preference position in which the provider was |
|
386 |
* added, or -1 if the provider was not added because it is |
|
387 |
* already installed. |
|
388 |
* |
|
389 |
* @throws NullPointerException if provider is null |
|
390 |
* @throws SecurityException |
|
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|
391 |
* if a security manager exists and its {@link |
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diff
changeset
|
392 |
* java.lang.SecurityManager#checkSecurityAccess} method |
2 | 393 |
* denies access to add a new provider |
394 |
* |
|
395 |
* @see #getProvider |
|
396 |
* @see #removeProvider |
|
397 |
* @see java.security.SecurityPermission |
|
398 |
*/ |
|
399 |
public static int addProvider(Provider provider) { |
|
400 |
/* |
|
401 |
* We can't assign a position here because the statically |
|
402 |
* registered providers may not have been installed yet. |
|
403 |
* insertProviderAt() will fix that value after it has |
|
404 |
* loaded the static providers. |
|
405 |
*/ |
|
406 |
return insertProviderAt(provider, 0); |
|
407 |
} |
|
408 |
||
409 |
/** |
|
410 |
* Removes the provider with the specified name. |
|
411 |
* |
|
412 |
* <p>When the specified provider is removed, all providers located |
|
413 |
* at a position greater than where the specified provider was are shifted |
|
414 |
* down one position (towards the head of the list of installed |
|
415 |
* providers). |
|
416 |
* |
|
417 |
* <p>This method returns silently if the provider is not installed or |
|
418 |
* if name is null. |
|
419 |
* |
|
420 |
* <p>First, if there is a security manager, its |
|
18579
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diff
changeset
|
421 |
* {@code checkSecurityAccess} |
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diff
changeset
|
422 |
* method is called with the string {@code "removeProvider."+name} |
2 | 423 |
* to see if it's ok to remove the provider. |
18579
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diff
changeset
|
424 |
* If the default implementation of {@code checkSecurityAccess} |
51759
ac6e9a2ebc04
8210786: Typo s/overriden/overridden/ in several places
igerasim
parents:
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diff
changeset
|
425 |
* is used (i.e., that method is not overridden), then this will result in |
18579
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8019360: Cleanup of the javadoc <code> tag in java.security.*
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diff
changeset
|
426 |
* a call to the security manager's {@code checkPermission} method |
b678846778ad
8019360: Cleanup of the javadoc <code> tag in java.security.*
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diff
changeset
|
427 |
* with a {@code SecurityPermission("removeProvider."+name)} |
2 | 428 |
* permission. |
429 |
* |
|
430 |
* @param name the name of the provider to remove. |
|
431 |
* |
|
432 |
* @throws SecurityException |
|
18579
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8019360: Cleanup of the javadoc <code> tag in java.security.*
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diff
changeset
|
433 |
* if a security manager exists and its {@link |
b678846778ad
8019360: Cleanup of the javadoc <code> tag in java.security.*
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parents:
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diff
changeset
|
434 |
* java.lang.SecurityManager#checkSecurityAccess} method |
2 | 435 |
* denies |
436 |
* access to remove the provider |
|
437 |
* |
|
438 |
* @see #getProvider |
|
439 |
* @see #addProvider |
|
440 |
*/ |
|
441 |
public static synchronized void removeProvider(String name) { |
|
442 |
check("removeProvider." + name); |
|
443 |
ProviderList list = Providers.getFullProviderList(); |
|
444 |
ProviderList newList = ProviderList.remove(list, name); |
|
445 |
Providers.setProviderList(newList); |
|
446 |
} |
|
447 |
||
448 |
/** |
|
449 |
* Returns an array containing all the installed providers. The order of |
|
450 |
* the providers in the array is their preference order. |
|
451 |
* |
|
452 |
* @return an array of all the installed providers. |
|
453 |
*/ |
|
454 |
public static Provider[] getProviders() { |
|
455 |
return Providers.getFullProviderList().toArray(); |
|
456 |
} |
|
457 |
||
458 |
/** |
|
459 |
* Returns the provider installed with the specified name, if |
|
460 |
* any. Returns null if no provider with the specified name is |
|
461 |
* installed or if name is null. |
|
462 |
* |
|
463 |
* @param name the name of the provider to get. |
|
464 |
* |
|
465 |
* @return the provider of the specified name. |
|
466 |
* |
|
467 |
* @see #removeProvider |
|
468 |
* @see #addProvider |
|
469 |
*/ |
|
470 |
public static Provider getProvider(String name) { |
|
471 |
return Providers.getProviderList().getProvider(name); |
|
472 |
} |
|
473 |
||
474 |
/** |
|
475 |
* Returns an array containing all installed providers that satisfy the |
|
476 |
* specified selection criterion, or null if no such providers have been |
|
477 |
* installed. The returned providers are ordered |
|
18592
80cdfecea074
8019539: Fix doclint errors in java.security and its subpackages
juh
parents:
18579
diff
changeset
|
478 |
* according to their |
80cdfecea074
8019539: Fix doclint errors in java.security and its subpackages
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18579
diff
changeset
|
479 |
* {@linkplain #insertProviderAt(java.security.Provider, int) preference order}. |
2 | 480 |
* |
481 |
* <p> A cryptographic service is always associated with a particular |
|
482 |
* algorithm or type. For example, a digital signature service is |
|
483 |
* always associated with a particular algorithm (e.g., DSA), |
|
484 |
* and a CertificateFactory service is always associated with |
|
485 |
* a particular certificate type (e.g., X.509). |
|
486 |
* |
|
487 |
* <p>The selection criterion must be specified in one of the following two |
|
488 |
* formats: |
|
489 |
* <ul> |
|
18592
80cdfecea074
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juh
parents:
18579
diff
changeset
|
490 |
* <li> <i>{@literal <crypto_service>.<algorithm_or_type>}</i> |
80cdfecea074
8019539: Fix doclint errors in java.security and its subpackages
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diff
changeset
|
491 |
* <p> The cryptographic service name must not contain any dots. |
2 | 492 |
* <p> A |
493 |
* provider satisfies the specified selection criterion iff the provider |
|
494 |
* implements the |
|
495 |
* specified algorithm or type for the specified cryptographic service. |
|
496 |
* <p> For example, "CertificateFactory.X.509" |
|
497 |
* would be satisfied by any provider that supplied |
|
498 |
* a CertificateFactory implementation for X.509 certificates. |
|
18592
80cdfecea074
8019539: Fix doclint errors in java.security and its subpackages
juh
parents:
18579
diff
changeset
|
499 |
* <li> <i>{@literal <crypto_service>.<algorithm_or_type> |
80cdfecea074
8019539: Fix doclint errors in java.security and its subpackages
juh
parents:
18579
diff
changeset
|
500 |
* <attribute_name>:<attribute_value>}</i> |
2 | 501 |
* <p> The cryptographic service name must not contain any dots. There |
21278 | 502 |
* must be one or more space characters between the |
18592
80cdfecea074
8019539: Fix doclint errors in java.security and its subpackages
juh
parents:
18579
diff
changeset
|
503 |
* <i>{@literal <algorithm_or_type>}</i> and the |
80cdfecea074
8019539: Fix doclint errors in java.security and its subpackages
juh
parents:
18579
diff
changeset
|
504 |
* <i>{@literal <attribute_name>}</i>. |
2 | 505 |
* <p> A provider satisfies this selection criterion iff the |
506 |
* provider implements the specified algorithm or type for the specified |
|
507 |
* cryptographic service and its implementation meets the |
|
508 |
* constraint expressed by the specified attribute name/value pair. |
|
509 |
* <p> For example, "Signature.SHA1withDSA KeySize:1024" would be |
|
510 |
* satisfied by any provider that implemented |
|
511 |
* the SHA1withDSA signature algorithm with a keysize of 1024 (or larger). |
|
512 |
* |
|
513 |
* </ul> |
|
514 |
* |
|
8152
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5001004: Required Security Algorithms need to be defined
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parents:
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diff
changeset
|
515 |
* <p> See the <a href= |
45118
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ihse
parents:
43712
diff
changeset
|
516 |
* "{@docRoot}/../specs/security/standard-names.html"> |
e4258d800b54
8178278: Move Standard Algorithm Names document to specs directory
ihse
parents:
43712
diff
changeset
|
517 |
* Java Security Standard Algorithm Names Specification</a> |
2 | 518 |
* for information about standard cryptographic service names, standard |
519 |
* algorithm names and standard attribute names. |
|
520 |
* |
|
521 |
* @param filter the criterion for selecting |
|
522 |
* providers. The filter is case-insensitive. |
|
523 |
* |
|
524 |
* @return all the installed providers that satisfy the selection |
|
525 |
* criterion, or null if no such providers have been installed. |
|
526 |
* |
|
527 |
* @throws InvalidParameterException |
|
528 |
* if the filter is not in the required format |
|
529 |
* @throws NullPointerException if filter is null |
|
530 |
* |
|
531 |
* @see #getProviders(java.util.Map) |
|
532 |
* @since 1.3 |
|
533 |
*/ |
|
534 |
public static Provider[] getProviders(String filter) { |
|
535 |
String key = null; |
|
536 |
String value = null; |
|
537 |
int index = filter.indexOf(':'); |
|
538 |
||
539 |
if (index == -1) { |
|
540 |
key = filter; |
|
541 |
value = ""; |
|
542 |
} else { |
|
543 |
key = filter.substring(0, index); |
|
544 |
value = filter.substring(index + 1); |
|
545 |
} |
|
546 |
||
7970
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7008728: diamond conversion of basic security, permissions, authentication
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parents:
7668
diff
changeset
|
547 |
Hashtable<String, String> hashtableFilter = new Hashtable<>(1); |
2 | 548 |
hashtableFilter.put(key, value); |
549 |
||
550 |
return (getProviders(hashtableFilter)); |
|
551 |
} |
|
552 |
||
553 |
/** |
|
554 |
* Returns an array containing all installed providers that satisfy the |
|
37880 | 555 |
* specified selection criteria, or null if no such providers have been |
2 | 556 |
* installed. The returned providers are ordered |
18592
80cdfecea074
8019539: Fix doclint errors in java.security and its subpackages
juh
parents:
18579
diff
changeset
|
557 |
* according to their |
80cdfecea074
8019539: Fix doclint errors in java.security and its subpackages
juh
parents:
18579
diff
changeset
|
558 |
* {@linkplain #insertProviderAt(java.security.Provider, int) |
80cdfecea074
8019539: Fix doclint errors in java.security and its subpackages
juh
parents:
18579
diff
changeset
|
559 |
* preference order}. |
2 | 560 |
* |
561 |
* <p>The selection criteria are represented by a map. |
|
562 |
* Each map entry represents a selection criterion. |
|
563 |
* A provider is selected iff it satisfies all selection |
|
564 |
* criteria. The key for any entry in such a map must be in one of the |
|
565 |
* following two formats: |
|
566 |
* <ul> |
|
18592
80cdfecea074
8019539: Fix doclint errors in java.security and its subpackages
juh
parents:
18579
diff
changeset
|
567 |
* <li> <i>{@literal <crypto_service>.<algorithm_or_type>}</i> |
2 | 568 |
* <p> The cryptographic service name must not contain any dots. |
569 |
* <p> The value associated with the key must be an empty string. |
|
570 |
* <p> A provider |
|
571 |
* satisfies this selection criterion iff the provider implements the |
|
572 |
* specified algorithm or type for the specified cryptographic service. |
|
18592
80cdfecea074
8019539: Fix doclint errors in java.security and its subpackages
juh
parents:
18579
diff
changeset
|
573 |
* <li> <i>{@literal <crypto_service>}. |
80cdfecea074
8019539: Fix doclint errors in java.security and its subpackages
juh
parents:
18579
diff
changeset
|
574 |
* {@literal <algorithm_or_type> <attribute_name>}</i> |
2 | 575 |
* <p> The cryptographic service name must not contain any dots. There |
21278 | 576 |
* must be one or more space characters between the |
18592
80cdfecea074
8019539: Fix doclint errors in java.security and its subpackages
juh
parents:
18579
diff
changeset
|
577 |
* <i>{@literal <algorithm_or_type>}</i> |
80cdfecea074
8019539: Fix doclint errors in java.security and its subpackages
juh
parents:
18579
diff
changeset
|
578 |
* and the <i>{@literal <attribute_name>}</i>. |
2 | 579 |
* <p> The value associated with the key must be a non-empty string. |
580 |
* A provider satisfies this selection criterion iff the |
|
581 |
* provider implements the specified algorithm or type for the specified |
|
582 |
* cryptographic service and its implementation meets the |
|
583 |
* constraint expressed by the specified attribute name/value pair. |
|
584 |
* </ul> |
|
585 |
* |
|
8152
94e5966bdf22
5001004: Required Security Algorithms need to be defined
mullan
parents:
5776
diff
changeset
|
586 |
* <p> See the <a href= |
45118
e4258d800b54
8178278: Move Standard Algorithm Names document to specs directory
ihse
parents:
43712
diff
changeset
|
587 |
* "{@docRoot}/../specs/security/standard-names.html"> |
e4258d800b54
8178278: Move Standard Algorithm Names document to specs directory
ihse
parents:
43712
diff
changeset
|
588 |
* Java Security Standard Algorithm Names Specification</a> |
2 | 589 |
* for information about standard cryptographic service names, standard |
590 |
* algorithm names and standard attribute names. |
|
591 |
* |
|
592 |
* @param filter the criteria for selecting |
|
593 |
* providers. The filter is case-insensitive. |
|
594 |
* |
|
595 |
* @return all the installed providers that satisfy the selection |
|
596 |
* criteria, or null if no such providers have been installed. |
|
597 |
* |
|
598 |
* @throws InvalidParameterException |
|
599 |
* if the filter is not in the required format |
|
600 |
* @throws NullPointerException if filter is null |
|
601 |
* |
|
602 |
* @see #getProviders(java.lang.String) |
|
603 |
* @since 1.3 |
|
604 |
*/ |
|
605 |
public static Provider[] getProviders(Map<String,String> filter) { |
|
606 |
// Get all installed providers first. |
|
607 |
// Then only return those providers who satisfy the selection criteria. |
|
608 |
Provider[] allProviders = Security.getProviders(); |
|
609 |
Set<String> keySet = filter.keySet(); |
|
7970
af1579474d16
7008728: diamond conversion of basic security, permissions, authentication
smarks
parents:
7668
diff
changeset
|
610 |
LinkedHashSet<Provider> candidates = new LinkedHashSet<>(5); |
2 | 611 |
|
612 |
// Returns all installed providers |
|
613 |
// if the selection criteria is null. |
|
614 |
if ((keySet == null) || (allProviders == null)) { |
|
615 |
return allProviders; |
|
616 |
} |
|
617 |
||
618 |
boolean firstSearch = true; |
|
619 |
||
620 |
// For each selection criterion, remove providers |
|
621 |
// which don't satisfy the criterion from the candidate set. |
|
622 |
for (Iterator<String> ite = keySet.iterator(); ite.hasNext(); ) { |
|
623 |
String key = ite.next(); |
|
624 |
String value = filter.get(key); |
|
625 |
||
626 |
LinkedHashSet<Provider> newCandidates = getAllQualifyingCandidates(key, value, |
|
627 |
allProviders); |
|
628 |
if (firstSearch) { |
|
629 |
candidates = newCandidates; |
|
630 |
firstSearch = false; |
|
631 |
} |
|
632 |
||
633 |
if ((newCandidates != null) && !newCandidates.isEmpty()) { |
|
634 |
// For each provider in the candidates set, if it |
|
635 |
// isn't in the newCandidate set, we should remove |
|
636 |
// it from the candidate set. |
|
637 |
for (Iterator<Provider> cansIte = candidates.iterator(); |
|
638 |
cansIte.hasNext(); ) { |
|
639 |
Provider prov = cansIte.next(); |
|
640 |
if (!newCandidates.contains(prov)) { |
|
641 |
cansIte.remove(); |
|
642 |
} |
|
643 |
} |
|
644 |
} else { |
|
645 |
candidates = null; |
|
646 |
break; |
|
647 |
} |
|
648 |
} |
|
649 |
||
650 |
if ((candidates == null) || (candidates.isEmpty())) |
|
651 |
return null; |
|
652 |
||
653 |
Object[] candidatesArray = candidates.toArray(); |
|
654 |
Provider[] result = new Provider[candidatesArray.length]; |
|
655 |
||
656 |
for (int i = 0; i < result.length; i++) { |
|
657 |
result[i] = (Provider)candidatesArray[i]; |
|
658 |
} |
|
659 |
||
660 |
return result; |
|
661 |
} |
|
662 |
||
663 |
// Map containing cached Spi Class objects of the specified type |
|
10336
0bb1999251f8
7064075: Security libraries don't build with javac -Xlint:all,-deprecation -Werror
jjg
parents:
9035
diff
changeset
|
664 |
private static final Map<String, Class<?>> spiMap = |
0bb1999251f8
7064075: Security libraries don't build with javac -Xlint:all,-deprecation -Werror
jjg
parents:
9035
diff
changeset
|
665 |
new ConcurrentHashMap<>(); |
2 | 666 |
|
667 |
/** |
|
668 |
* Return the Class object for the given engine type |
|
669 |
* (e.g. "MessageDigest"). Works for Spis in the java.security package |
|
670 |
* only. |
|
671 |
*/ |
|
10336
0bb1999251f8
7064075: Security libraries don't build with javac -Xlint:all,-deprecation -Werror
jjg
parents:
9035
diff
changeset
|
672 |
private static Class<?> getSpiClass(String type) { |
0bb1999251f8
7064075: Security libraries don't build with javac -Xlint:all,-deprecation -Werror
jjg
parents:
9035
diff
changeset
|
673 |
Class<?> clazz = spiMap.get(type); |
2 | 674 |
if (clazz != null) { |
675 |
return clazz; |
|
676 |
} |
|
677 |
try { |
|
678 |
clazz = Class.forName("java.security." + type + "Spi"); |
|
679 |
spiMap.put(type, clazz); |
|
680 |
return clazz; |
|
681 |
} catch (ClassNotFoundException e) { |
|
5776
5f48622225ab
6935997: Please add a nested throwable constructor to AssertionError
darcy
parents:
5506
diff
changeset
|
682 |
throw new AssertionError("Spi class not found", e); |
2 | 683 |
} |
684 |
} |
|
685 |
||
686 |
/* |
|
687 |
* Returns an array of objects: the first object in the array is |
|
688 |
* an instance of an implementation of the requested algorithm |
|
689 |
* and type, and the second object in the array identifies the provider |
|
690 |
* of that implementation. |
|
18579
b678846778ad
8019360: Cleanup of the javadoc <code> tag in java.security.*
juh
parents:
14775
diff
changeset
|
691 |
* The {@code provider} argument can be null, in which case all |
2 | 692 |
* configured providers will be searched in order of preference. |
693 |
*/ |
|
694 |
static Object[] getImpl(String algorithm, String type, String provider) |
|
695 |
throws NoSuchAlgorithmException, NoSuchProviderException { |
|
696 |
if (provider == null) { |
|
697 |
return GetInstance.getInstance |
|
698 |
(type, getSpiClass(type), algorithm).toArray(); |
|
699 |
} else { |
|
700 |
return GetInstance.getInstance |
|
701 |
(type, getSpiClass(type), algorithm, provider).toArray(); |
|
702 |
} |
|
703 |
} |
|
704 |
||
705 |
static Object[] getImpl(String algorithm, String type, String provider, |
|
706 |
Object params) throws NoSuchAlgorithmException, |
|
707 |
NoSuchProviderException, InvalidAlgorithmParameterException { |
|
708 |
if (provider == null) { |
|
709 |
return GetInstance.getInstance |
|
710 |
(type, getSpiClass(type), algorithm, params).toArray(); |
|
711 |
} else { |
|
712 |
return GetInstance.getInstance |
|
713 |
(type, getSpiClass(type), algorithm, params, provider).toArray(); |
|
714 |
} |
|
715 |
} |
|
716 |
||
717 |
/* |
|
718 |
* Returns an array of objects: the first object in the array is |
|
719 |
* an instance of an implementation of the requested algorithm |
|
720 |
* and type, and the second object in the array identifies the provider |
|
721 |
* of that implementation. |
|
18579
b678846778ad
8019360: Cleanup of the javadoc <code> tag in java.security.*
juh
parents:
14775
diff
changeset
|
722 |
* The {@code provider} argument cannot be null. |
2 | 723 |
*/ |
724 |
static Object[] getImpl(String algorithm, String type, Provider provider) |
|
725 |
throws NoSuchAlgorithmException { |
|
726 |
return GetInstance.getInstance |
|
727 |
(type, getSpiClass(type), algorithm, provider).toArray(); |
|
728 |
} |
|
729 |
||
730 |
static Object[] getImpl(String algorithm, String type, Provider provider, |
|
731 |
Object params) throws NoSuchAlgorithmException, |
|
732 |
InvalidAlgorithmParameterException { |
|
733 |
return GetInstance.getInstance |
|
734 |
(type, getSpiClass(type), algorithm, params, provider).toArray(); |
|
735 |
} |
|
736 |
||
737 |
/** |
|
738 |
* Gets a security property value. |
|
739 |
* |
|
740 |
* <p>First, if there is a security manager, its |
|
18579
b678846778ad
8019360: Cleanup of the javadoc <code> tag in java.security.*
juh
parents:
14775
diff
changeset
|
741 |
* {@code checkPermission} method is called with a |
b678846778ad
8019360: Cleanup of the javadoc <code> tag in java.security.*
juh
parents:
14775
diff
changeset
|
742 |
* {@code java.security.SecurityPermission("getProperty."+key)} |
2 | 743 |
* permission to see if it's ok to retrieve the specified |
744 |
* security property value.. |
|
745 |
* |
|
746 |
* @param key the key of the property being retrieved. |
|
747 |
* |
|
748 |
* @return the value of the security property corresponding to key. |
|
749 |
* |
|
750 |
* @throws SecurityException |
|
18579
b678846778ad
8019360: Cleanup of the javadoc <code> tag in java.security.*
juh
parents:
14775
diff
changeset
|
751 |
* if a security manager exists and its {@link |
b678846778ad
8019360: Cleanup of the javadoc <code> tag in java.security.*
juh
parents:
14775
diff
changeset
|
752 |
* java.lang.SecurityManager#checkPermission} method |
2 | 753 |
* denies |
754 |
* access to retrieve the specified security property value |
|
755 |
* @throws NullPointerException is key is null |
|
756 |
* |
|
757 |
* @see #setProperty |
|
758 |
* @see java.security.SecurityPermission |
|
759 |
*/ |
|
760 |
public static String getProperty(String key) { |
|
761 |
SecurityManager sm = System.getSecurityManager(); |
|
762 |
if (sm != null) { |
|
763 |
sm.checkPermission(new SecurityPermission("getProperty."+ |
|
764 |
key)); |
|
765 |
} |
|
766 |
String name = props.getProperty(key); |
|
767 |
if (name != null) |
|
768 |
name = name.trim(); // could be a class name with trailing ws |
|
769 |
return name; |
|
770 |
} |
|
771 |
||
772 |
/** |
|
773 |
* Sets a security property value. |
|
774 |
* |
|
775 |
* <p>First, if there is a security manager, its |
|
18579
b678846778ad
8019360: Cleanup of the javadoc <code> tag in java.security.*
juh
parents:
14775
diff
changeset
|
776 |
* {@code checkPermission} method is called with a |
b678846778ad
8019360: Cleanup of the javadoc <code> tag in java.security.*
juh
parents:
14775
diff
changeset
|
777 |
* {@code java.security.SecurityPermission("setProperty."+key)} |
2 | 778 |
* permission to see if it's ok to set the specified |
779 |
* security property value. |
|
780 |
* |
|
781 |
* @param key the name of the property to be set. |
|
782 |
* |
|
783 |
* @param datum the value of the property to be set. |
|
784 |
* |
|
785 |
* @throws SecurityException |
|
18579
b678846778ad
8019360: Cleanup of the javadoc <code> tag in java.security.*
juh
parents:
14775
diff
changeset
|
786 |
* if a security manager exists and its {@link |
b678846778ad
8019360: Cleanup of the javadoc <code> tag in java.security.*
juh
parents:
14775
diff
changeset
|
787 |
* java.lang.SecurityManager#checkPermission} method |
2 | 788 |
* denies access to set the specified security property value |
789 |
* @throws NullPointerException if key or datum is null |
|
790 |
* |
|
791 |
* @see #getProperty |
|
792 |
* @see java.security.SecurityPermission |
|
793 |
*/ |
|
794 |
public static void setProperty(String key, String datum) { |
|
795 |
check("setProperty."+key); |
|
796 |
props.put(key, datum); |
|
797 |
invalidateSMCache(key); /* See below. */ |
|
798 |
} |
|
799 |
||
800 |
/* |
|
801 |
* Implementation detail: If the property we just set in |
|
802 |
* setProperty() was either "package.access" or |
|
803 |
* "package.definition", we need to signal to the SecurityManager |
|
804 |
* class that the value has just changed, and that it should |
|
805 |
* invalidate it's local cache values. |
|
806 |
*/ |
|
807 |
private static void invalidateSMCache(String key) { |
|
808 |
||
809 |
final boolean pa = key.equals("package.access"); |
|
810 |
final boolean pd = key.equals("package.definition"); |
|
811 |
||
812 |
if (pa || pd) { |
|
43712
5dfd0950317c
8173393: Module system implementation refresh (2/2017)
alanb
parents:
37880
diff
changeset
|
813 |
SharedSecrets.getJavaLangAccess().invalidatePackageAccessCache(); |
5dfd0950317c
8173393: Module system implementation refresh (2/2017)
alanb
parents:
37880
diff
changeset
|
814 |
} |
2 | 815 |
} |
816 |
||
817 |
private static void check(String directive) { |
|
818 |
SecurityManager security = System.getSecurityManager(); |
|
819 |
if (security != null) { |
|
820 |
security.checkSecurityAccess(directive); |
|
821 |
} |
|
822 |
} |
|
823 |
||
19193
103262cae675
8001319: Add SecurityPermission "insertProvider" target name
mullan
parents:
18592
diff
changeset
|
824 |
private static void checkInsertProvider(String name) { |
103262cae675
8001319: Add SecurityPermission "insertProvider" target name
mullan
parents:
18592
diff
changeset
|
825 |
SecurityManager security = System.getSecurityManager(); |
103262cae675
8001319: Add SecurityPermission "insertProvider" target name
mullan
parents:
18592
diff
changeset
|
826 |
if (security != null) { |
103262cae675
8001319: Add SecurityPermission "insertProvider" target name
mullan
parents:
18592
diff
changeset
|
827 |
try { |
103262cae675
8001319: Add SecurityPermission "insertProvider" target name
mullan
parents:
18592
diff
changeset
|
828 |
security.checkSecurityAccess("insertProvider"); |
103262cae675
8001319: Add SecurityPermission "insertProvider" target name
mullan
parents:
18592
diff
changeset
|
829 |
} catch (SecurityException se1) { |
103262cae675
8001319: Add SecurityPermission "insertProvider" target name
mullan
parents:
18592
diff
changeset
|
830 |
try { |
103262cae675
8001319: Add SecurityPermission "insertProvider" target name
mullan
parents:
18592
diff
changeset
|
831 |
security.checkSecurityAccess("insertProvider." + name); |
103262cae675
8001319: Add SecurityPermission "insertProvider" target name
mullan
parents:
18592
diff
changeset
|
832 |
} catch (SecurityException se2) { |
103262cae675
8001319: Add SecurityPermission "insertProvider" target name
mullan
parents:
18592
diff
changeset
|
833 |
// throw first exception, but add second to suppressed |
103262cae675
8001319: Add SecurityPermission "insertProvider" target name
mullan
parents:
18592
diff
changeset
|
834 |
se1.addSuppressed(se2); |
103262cae675
8001319: Add SecurityPermission "insertProvider" target name
mullan
parents:
18592
diff
changeset
|
835 |
throw se1; |
103262cae675
8001319: Add SecurityPermission "insertProvider" target name
mullan
parents:
18592
diff
changeset
|
836 |
} |
103262cae675
8001319: Add SecurityPermission "insertProvider" target name
mullan
parents:
18592
diff
changeset
|
837 |
} |
103262cae675
8001319: Add SecurityPermission "insertProvider" target name
mullan
parents:
18592
diff
changeset
|
838 |
} |
103262cae675
8001319: Add SecurityPermission "insertProvider" target name
mullan
parents:
18592
diff
changeset
|
839 |
} |
103262cae675
8001319: Add SecurityPermission "insertProvider" target name
mullan
parents:
18592
diff
changeset
|
840 |
|
2 | 841 |
/* |
842 |
* Returns all providers who satisfy the specified |
|
843 |
* criterion. |
|
844 |
*/ |
|
845 |
private static LinkedHashSet<Provider> getAllQualifyingCandidates( |
|
846 |
String filterKey, |
|
847 |
String filterValue, |
|
848 |
Provider[] allProviders) { |
|
849 |
String[] filterComponents = getFilterComponents(filterKey, |
|
850 |
filterValue); |
|
851 |
||
852 |
// The first component is the service name. |
|
853 |
// The second is the algorithm name. |
|
854 |
// If the third isn't null, that is the attrinute name. |
|
855 |
String serviceName = filterComponents[0]; |
|
856 |
String algName = filterComponents[1]; |
|
857 |
String attrName = filterComponents[2]; |
|
858 |
||
859 |
return getProvidersNotUsingCache(serviceName, algName, attrName, |
|
860 |
filterValue, allProviders); |
|
861 |
} |
|
862 |
||
863 |
private static LinkedHashSet<Provider> getProvidersNotUsingCache( |
|
864 |
String serviceName, |
|
865 |
String algName, |
|
866 |
String attrName, |
|
867 |
String filterValue, |
|
868 |
Provider[] allProviders) { |
|
7970
af1579474d16
7008728: diamond conversion of basic security, permissions, authentication
smarks
parents:
7668
diff
changeset
|
869 |
LinkedHashSet<Provider> candidates = new LinkedHashSet<>(5); |
2 | 870 |
for (int i = 0; i < allProviders.length; i++) { |
871 |
if (isCriterionSatisfied(allProviders[i], serviceName, |
|
872 |
algName, |
|
873 |
attrName, filterValue)) { |
|
874 |
candidates.add(allProviders[i]); |
|
875 |
} |
|
876 |
} |
|
877 |
return candidates; |
|
878 |
} |
|
879 |
||
880 |
/* |
|
881 |
* Returns true if the given provider satisfies |
|
882 |
* the selection criterion key:value. |
|
883 |
*/ |
|
884 |
private static boolean isCriterionSatisfied(Provider prov, |
|
885 |
String serviceName, |
|
886 |
String algName, |
|
887 |
String attrName, |
|
888 |
String filterValue) { |
|
889 |
String key = serviceName + '.' + algName; |
|
890 |
||
891 |
if (attrName != null) { |
|
892 |
key += ' ' + attrName; |
|
893 |
} |
|
894 |
// Check whether the provider has a property |
|
895 |
// whose key is the same as the given key. |
|
896 |
String propValue = getProviderProperty(key, prov); |
|
897 |
||
898 |
if (propValue == null) { |
|
899 |
// Check whether we have an alias instead |
|
900 |
// of a standard name in the key. |
|
901 |
String standardName = getProviderProperty("Alg.Alias." + |
|
902 |
serviceName + "." + |
|
903 |
algName, |
|
904 |
prov); |
|
905 |
if (standardName != null) { |
|
906 |
key = serviceName + "." + standardName; |
|
907 |
||
908 |
if (attrName != null) { |
|
909 |
key += ' ' + attrName; |
|
910 |
} |
|
911 |
||
912 |
propValue = getProviderProperty(key, prov); |
|
913 |
} |
|
914 |
||
915 |
if (propValue == null) { |
|
916 |
// The provider doesn't have the given |
|
917 |
// key in its property list. |
|
918 |
return false; |
|
919 |
} |
|
920 |
} |
|
921 |
||
922 |
// If the key is in the format of: |
|
923 |
// <crypto_service>.<algorithm_or_type>, |
|
924 |
// there is no need to check the value. |
|
925 |
||
926 |
if (attrName == null) { |
|
927 |
return true; |
|
928 |
} |
|
929 |
||
930 |
// If we get here, the key must be in the |
|
931 |
// format of <crypto_service>.<algorithm_or_provider> <attribute_name>. |
|
932 |
if (isStandardAttr(attrName)) { |
|
933 |
return isConstraintSatisfied(attrName, filterValue, propValue); |
|
934 |
} else { |
|
935 |
return filterValue.equalsIgnoreCase(propValue); |
|
936 |
} |
|
937 |
} |
|
938 |
||
939 |
/* |
|
940 |
* Returns true if the attribute is a standard attribute; |
|
941 |
* otherwise, returns false. |
|
942 |
*/ |
|
943 |
private static boolean isStandardAttr(String attribute) { |
|
944 |
// For now, we just have two standard attributes: |
|
945 |
// KeySize and ImplementedIn. |
|
946 |
if (attribute.equalsIgnoreCase("KeySize")) |
|
947 |
return true; |
|
948 |
||
949 |
if (attribute.equalsIgnoreCase("ImplementedIn")) |
|
950 |
return true; |
|
951 |
||
952 |
return false; |
|
953 |
} |
|
954 |
||
955 |
/* |
|
956 |
* Returns true if the requested attribute value is supported; |
|
957 |
* otherwise, returns false. |
|
958 |
*/ |
|
959 |
private static boolean isConstraintSatisfied(String attribute, |
|
960 |
String value, |
|
961 |
String prop) { |
|
962 |
// For KeySize, prop is the max key size the |
|
963 |
// provider supports for a specific <crypto_service>.<algorithm>. |
|
964 |
if (attribute.equalsIgnoreCase("KeySize")) { |
|
965 |
int requestedSize = Integer.parseInt(value); |
|
966 |
int maxSize = Integer.parseInt(prop); |
|
967 |
if (requestedSize <= maxSize) { |
|
968 |
return true; |
|
969 |
} else { |
|
970 |
return false; |
|
971 |
} |
|
972 |
} |
|
973 |
||
974 |
// For Type, prop is the type of the implementation |
|
975 |
// for a specific <crypto service>.<algorithm>. |
|
976 |
if (attribute.equalsIgnoreCase("ImplementedIn")) { |
|
977 |
return value.equalsIgnoreCase(prop); |
|
978 |
} |
|
979 |
||
980 |
return false; |
|
981 |
} |
|
982 |
||
983 |
static String[] getFilterComponents(String filterKey, String filterValue) { |
|
984 |
int algIndex = filterKey.indexOf('.'); |
|
985 |
||
986 |
if (algIndex < 0) { |
|
987 |
// There must be a dot in the filter, and the dot |
|
988 |
// shouldn't be at the beginning of this string. |
|
989 |
throw new InvalidParameterException("Invalid filter"); |
|
990 |
} |
|
991 |
||
992 |
String serviceName = filterKey.substring(0, algIndex); |
|
993 |
String algName = null; |
|
994 |
String attrName = null; |
|
995 |
||
996 |
if (filterValue.length() == 0) { |
|
997 |
// The filterValue is an empty string. So the filterKey |
|
998 |
// should be in the format of <crypto_service>.<algorithm_or_type>. |
|
999 |
algName = filterKey.substring(algIndex + 1).trim(); |
|
1000 |
if (algName.length() == 0) { |
|
1001 |
// There must be a algorithm or type name. |
|
1002 |
throw new InvalidParameterException("Invalid filter"); |
|
1003 |
} |
|
1004 |
} else { |
|
1005 |
// The filterValue is a non-empty string. So the filterKey must be |
|
1006 |
// in the format of |
|
1007 |
// <crypto_service>.<algorithm_or_type> <attribute_name> |
|
1008 |
int attrIndex = filterKey.indexOf(' '); |
|
1009 |
||
1010 |
if (attrIndex == -1) { |
|
1011 |
// There is no attribute name in the filter. |
|
1012 |
throw new InvalidParameterException("Invalid filter"); |
|
1013 |
} else { |
|
1014 |
attrName = filterKey.substring(attrIndex + 1).trim(); |
|
1015 |
if (attrName.length() == 0) { |
|
1016 |
// There is no attribute name in the filter. |
|
1017 |
throw new InvalidParameterException("Invalid filter"); |
|
1018 |
} |
|
1019 |
} |
|
1020 |
||
1021 |
// There must be an algorithm name in the filter. |
|
1022 |
if ((attrIndex < algIndex) || |
|
1023 |
(algIndex == attrIndex - 1)) { |
|
1024 |
throw new InvalidParameterException("Invalid filter"); |
|
1025 |
} else { |
|
1026 |
algName = filterKey.substring(algIndex + 1, attrIndex); |
|
1027 |
} |
|
1028 |
} |
|
1029 |
||
1030 |
String[] result = new String[3]; |
|
1031 |
result[0] = serviceName; |
|
1032 |
result[1] = algName; |
|
1033 |
result[2] = attrName; |
|
1034 |
||
1035 |
return result; |
|
1036 |
} |
|
1037 |
||
1038 |
/** |
|
1039 |
* Returns a Set of Strings containing the names of all available |
|
1040 |
* algorithms or types for the specified Java cryptographic service |
|
1041 |
* (e.g., Signature, MessageDigest, Cipher, Mac, KeyStore). Returns |
|
1042 |
* an empty Set if there is no provider that supports the |
|
1043 |
* specified service or if serviceName is null. For a complete list |
|
1044 |
* of Java cryptographic services, please see the |
|
45665 | 1045 |
* {@extLink security_guide_jca |
1046 |
* Java Cryptography Architecture (JCA) Reference Guide}. |
|
2 | 1047 |
* Note: the returned set is immutable. |
1048 |
* |
|
1049 |
* @param serviceName the name of the Java cryptographic |
|
1050 |
* service (e.g., Signature, MessageDigest, Cipher, Mac, KeyStore). |
|
1051 |
* Note: this parameter is case-insensitive. |
|
1052 |
* |
|
1053 |
* @return a Set of Strings containing the names of all available |
|
1054 |
* algorithms or types for the specified Java cryptographic service |
|
1055 |
* or an empty set if no provider supports the specified service. |
|
1056 |
* |
|
1057 |
* @since 1.4 |
|
1058 |
**/ |
|
1059 |
public static Set<String> getAlgorithms(String serviceName) { |
|
1060 |
||
1061 |
if ((serviceName == null) || (serviceName.length() == 0) || |
|
1062 |
(serviceName.endsWith("."))) { |
|
10336
0bb1999251f8
7064075: Security libraries don't build with javac -Xlint:all,-deprecation -Werror
jjg
parents:
9035
diff
changeset
|
1063 |
return Collections.emptySet(); |
2 | 1064 |
} |
1065 |
||
7970
af1579474d16
7008728: diamond conversion of basic security, permissions, authentication
smarks
parents:
7668
diff
changeset
|
1066 |
HashSet<String> result = new HashSet<>(); |
2 | 1067 |
Provider[] providers = Security.getProviders(); |
1068 |
||
1069 |
for (int i = 0; i < providers.length; i++) { |
|
1070 |
// Check the keys for each provider. |
|
1071 |
for (Enumeration<Object> e = providers[i].keys(); |
|
1072 |
e.hasMoreElements(); ) { |
|
10369
e9d2e59e53f0
7059542: JNDI name operations should be locale independent
xuelei
parents:
10336
diff
changeset
|
1073 |
String currentKey = |
e9d2e59e53f0
7059542: JNDI name operations should be locale independent
xuelei
parents:
10336
diff
changeset
|
1074 |
((String)e.nextElement()).toUpperCase(Locale.ENGLISH); |
e9d2e59e53f0
7059542: JNDI name operations should be locale independent
xuelei
parents:
10336
diff
changeset
|
1075 |
if (currentKey.startsWith( |
e9d2e59e53f0
7059542: JNDI name operations should be locale independent
xuelei
parents:
10336
diff
changeset
|
1076 |
serviceName.toUpperCase(Locale.ENGLISH))) { |
2 | 1077 |
// We should skip the currentKey if it contains a |
1078 |
// whitespace. The reason is: such an entry in the |
|
1079 |
// provider property contains attributes for the |
|
1080 |
// implementation of an algorithm. We are only interested |
|
1081 |
// in entries which lead to the implementation |
|
1082 |
// classes. |
|
24685
215fa91e1b4c
8044461: Cleanup new Boolean and single character strings
rriggs
parents:
21278
diff
changeset
|
1083 |
if (currentKey.indexOf(' ') < 0) { |
10369
e9d2e59e53f0
7059542: JNDI name operations should be locale independent
xuelei
parents:
10336
diff
changeset
|
1084 |
result.add(currentKey.substring( |
e9d2e59e53f0
7059542: JNDI name operations should be locale independent
xuelei
parents:
10336
diff
changeset
|
1085 |
serviceName.length() + 1)); |
2 | 1086 |
} |
1087 |
} |
|
1088 |
} |
|
1089 |
} |
|
1090 |
return Collections.unmodifiableSet(result); |
|
1091 |
} |
|
1092 |
} |