package org.apache.synapse.securevault.keystore;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.synapse.securevault.ICACertsLoader;
import org.apache.synapse.securevault.SecureVaultException;
import java.io.BufferedInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.security.KeyStore;
import java.security.KeyStoreException;
import java.security.NoSuchAlgorithmException;
import java.security.cert.Certificate;
import java.security.cert.CertificateException;
import java.security.cert.CertificateFactory;
/**
* Constructs a keyStore from CA certificates
*/
public class CACertsLoader implements ICACertsLoader {
private static Log log = LogFactory.getLog(CACertsLoader.class);
/**
* Constructs a keyStore from the path provided.
*
* @param CACertificateFilesPath - directory which contains Certificate Authority
* Certificates in PEM encoding.
*/
public KeyStore loadTrustStore(String CACertificateFilesPath) {
try {
if (log.isDebugEnabled()) {
log.debug("Creating KeyStore from given CA certificates" +
" in the given directory : " + CACertificateFilesPath);
}
KeyStore trustStore = KeyStore.getInstance("JKS");
trustStore.load(null, null);
File certsPath = new File(CACertificateFilesPath);
File[] certs = certsPath.listFiles();
for (File currentCert : certs) {
FileInputStream inStream = new FileInputStream(currentCert);
BufferedInputStream bis = new BufferedInputStream(inStream);
CertificateFactory certFactory = CertificateFactory.getInstance("X509");
Certificate cert = certFactory.generateCertificate(bis);
trustStore.setCertificateEntry(currentCert.getName(), cert);
bis.close();
inStream.close();
}
return trustStore;
} catch (IOException e) {
handleException("IOError when reading certificates from " +
"directory : " + CACertificateFilesPath, e);
} catch (NoSuchAlgorithmException e) {
handleException("Error creating a KeyStore", e);
} catch (KeyStoreException e) {
handleException("Error creating a KeyStore", e);
} catch (CertificateException e) {
handleException("Error creating a KeyStore", e);
}
return null;
}
private void handleException(String msg, Exception e) {
log.error(msg, e);
throw new SecureVaultException(msg, e);
}
}