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/*
* Copyright (c) 2017, 2021, 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.
*
* 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.
*/
import java.nio.file.Path;
import java.util.Arrays;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;
/*
* It represents a JDK with some specific attributes.
* If two JdkInfo instances have the same version value, the instances are
* regarded as equivalent.
*/
public class JdkInfo {
public static final JdkInfo DEFAULT = new JdkInfo(Jdk.DEFAULT.getPath());
public final Path javaPath;
public final String version;
public final List<String> supportedProtocols;
public final List<String> enabledProtocols;
public final List<String> supportedCipherSuites;
public final List<String> enabledCipherSuites;
public final boolean supportsSNI;
public final boolean supportsALPN;
public JdkInfo(Path javaPath) {
this.javaPath = javaPath;
String output = jdkAttributes(javaPath);
if (output == null || output.trim().isEmpty()) {
throw new RuntimeException(
"Cannot determine the JDK attributes: " + javaPath);
}
String[] attributes = Utilities.split(output, Utilities.PARAM_DELIMITER);
version = parseAttribute(attributes[0]);
supportedProtocols = parseListAttribute(attributes[1]);
enabledProtocols = parseListAttribute(attributes[2]);
supportedCipherSuites = parseListAttribute(attributes[3]);
enabledCipherSuites = parseListAttribute(attributes[4]);
supportsSNI = parseBooleanAttribute(attributes[5]);
supportsALPN = parseBooleanAttribute(attributes[6]);
}
private List<String> parseListAttribute(String attribute) {
attribute = parseAttribute(attribute);
return Arrays.asList(attribute.split(","));
}
private boolean parseBooleanAttribute(String attribute) {
attribute = parseAttribute(attribute);
return Boolean.parseBoolean(attribute);
}
private String parseAttribute(String attribute) {
return attribute.replaceAll(".*=", "");
}
// Determines the specific attributes for the specified JDK.
private static String jdkAttributes(Path javaPath) {
Map<String, String> props = new LinkedHashMap<>();
props.put("java.security.properties", Utils.SEC_PROPS_FILE);
return ProcUtils.java(javaPath, JdkInfoUtils.class, props).getOutput();
}
@Override
public int hashCode() {
return version == null ? 0 : version.hashCode();
}
@Override
public boolean equals(Object obj) {
if (this == obj) {
return true;
}
if (obj == null) {
return false;
}
if (getClass() != obj.getClass()) {
return false;
}
JdkInfo other = (JdkInfo) obj;
if (version == null) {
if (other.version != null) {
return false;
}
} else if (!version.equals(other.version)) {
return false;
}
return true;
}
public boolean supportsProtocol(Protocol protocol) {
return supportedProtocols.contains(protocol.name);
}
public boolean enablesProtocol(Protocol protocol) {
return enabledProtocols.contains(protocol.name);
}
public boolean supportsCipherSuite(CipherSuite cipherSuite) {
return supportedCipherSuites.contains(cipherSuite.name());
}
public boolean enablesCipherSuite(CipherSuite cipherSuite) {
return enabledCipherSuites.contains(cipherSuite.name());
}
}
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