/*
* 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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