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/*
* Copyright 2000-2014 JetBrains s.r.o.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.intellij.util.net.ssl;
import com.intellij.openapi.diagnostic.Logger;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
import java.io.FileInputStream;
import java.io.InputStream;
import java.security.cert.CertificateException;
import java.security.cert.CertificateFactory;
import java.security.cert.X509Certificate;
/**
* Names in constants match
* <a href="http://docs.oracle.com/javase/7/docs/technotes/guides/security/StandardNames.html">Standard Algorithm Name Documentation</a>.
*
* @author Mikhail Golubev
*/
public class CertificateUtil {
public static final String X509 = "X.509";
public static final String JKS = "JKS";
public static final String PKCS12 = "PKCS12";
public static final String PKIX = "PKIX";
public static final String TLS = "TLS";
private static final CertificateFactory ourFactory = createFactory();
private static CertificateFactory createFactory() {
try {
return CertificateFactory.getInstance(X509);
}
catch (CertificateException e) {
throw new RuntimeException("Can't initialize X.509 certificate factory", e);
}
}
private CertificateUtil() { }
@Nullable
public static X509Certificate loadX509Certificate(@NotNull String path) {
try {
InputStream stream = new FileInputStream(path);
try {
return (X509Certificate)ourFactory.generateCertificate(stream);
}
finally {
stream.close();
}
}
catch (Exception e) {
Logger.getInstance(CertificateUtil.class).error("Can't add certificate for path: " + path, e);
return null;
}
}
/**
* @return subjects common name, usually it's domain name pattern, e.g. *.github.com
*/
public static String getCommonName(@NotNull X509Certificate certificate) {
return new CertificateWrapper(certificate).getSubjectField(CertificateWrapper.CommonField.COMMON_NAME);
}
}
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