1 files changed, 149 insertions, 0 deletions
diff --git a/common/src/main/java/at/gv/egovernment/moa/util/KeyStoreUtils.java b/common/src/main/java/at/gv/egovernment/moa/util/KeyStoreUtils.java
new file mode 100644
index 000000000..b08feaffb
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+++ b/common/src/main/java/at/gv/egovernment/moa/util/KeyStoreUtils.java
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+/*
+* Copyright 2003 Federal Chancellery Austria
+*
+* 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 at.gv.egovernment.moa.util;
+
+import iaik.x509.X509Certificate;
+
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.IOException;
+import java.io.InputStream;
+import java.net.URL;
+import java.security.GeneralSecurityException;
+import java.security.KeyStore;
+import java.security.cert.Certificate;
+
+/**
+ * Utility for creating and loading key stores.
+ * 
+ * @author Paul Ivancsics
+ * @version $Id$
+ */
+public class KeyStoreUtils {
+
+  /**
+   * Loads a key store from file.
+   * 
+   * @param keystoreType key store type
+   * @param urlString URL of key store
+   * @param password password protecting the key store
+   * @return key store loaded
+   * @throws IOException thrown while reading the key store from file
+   * @throws GeneralSecurityException thrown while creating the key store
+   */
+  public static KeyStore loadKeyStore(
+    String keystoreType,
+    String urlString,
+    String password)
+    throws IOException, GeneralSecurityException {
+
+    URL keystoreURL = new URL(urlString);
+    InputStream in = keystoreURL.openStream();
+    return loadKeyStore(keystoreType, in, password);
+  }
+  /**
+   * Loads a key store from an <code>InputStream</code>, and
+   * closes the <code>InputStream</code>.
+   * 
+   * @param keystoreType key store type
+   * @param in input stream
+   * @param password password protecting the key store
+   * @return key store loaded
+   * @throws IOException thrown while reading the key store from the stream
+   * @throws GeneralSecurityException thrown while creating the key store
+   */
+  public static KeyStore loadKeyStore(
+    String keystoreType,
+    InputStream in,
+    String password)
+    throws IOException, GeneralSecurityException {
+
+    char[] chPassword = null;
+    if (password != null)
+      chPassword = password.toCharArray();
+    KeyStore ks = KeyStore.getInstance(keystoreType);
+    ks.load(in, chPassword);
+    in.close();
+    return ks;
+  }
+  /**
+   * Creates a key store from X509 certificate files, aliasing them with
+   * the index in the <code>String[]</code>, starting with <code>"0"</code>.
+   * 
+   * @param keyStoreType key store type
+   * @param certFilenames certificate filenames
+   * @return key store created
+   * @throws IOException thrown while reading the certificates from file
+   * @throws GeneralSecurityException thrown while creating the key store
+   */
+  public static KeyStore createKeyStore(
+    String keyStoreType,
+    String[] certFilenames)
+    throws IOException, GeneralSecurityException {
+
+    KeyStore ks = KeyStore.getInstance(keyStoreType);
+    ks.load(null, null);
+    for (int i = 0; i < certFilenames.length; i++) {
+      Certificate cert = loadCertificate(certFilenames[i]);
+      ks.setCertificateEntry("" + i, cert);
+    }
+    return ks;
+  }
+  /**
+   * Creates a key store from a directory containg X509 certificate files, 
+   * aliasing them with the index in the <code>String[]</code>, starting with <code>"0"</code>.
+   * All the files in the directory are considered to be certificates.
+   * 
+   * @param keyStoreType key store type
+   * @param certDirURLString file URL of directory containing certificate filenames
+   * @return key store created
+   * @throws IOException thrown while reading the certificates from file
+   * @throws GeneralSecurityException thrown while creating the key store
+   */
+  public static KeyStore createKeyStoreFromCertificateDirectory(
+    String keyStoreType,
+    String certDirURLString)
+    throws IOException, GeneralSecurityException {
+
+    URL certDirURL = new URL(certDirURLString);
+    String certDirname = certDirURL.getFile();
+    File certDir = new File(certDirname);
+    String[] certFilenames = certDir.list();
+    String separator =
+      (certDirname.endsWith(File.separator) ? "" : File.separator);
+    for (int i = 0; i < certFilenames.length; i++) {
+      certFilenames[i] = certDirname + separator + certFilenames[i];
+    }
+    return createKeyStore(keyStoreType, certFilenames);
+  }
+
+  /**
+   * Loads an X509 certificate from file.
+   * @param certFilename filename
+   * @return the certificate loaded
+   * @throws IOException thrown while reading the certificate from file
+   * @throws GeneralSecurityException thrown while creating the certificate
+   */
+  private static Certificate loadCertificate(String certFilename)
+    throws IOException, GeneralSecurityException {
+
+    FileInputStream in = new FileInputStream(certFilename);
+    Certificate cert = new X509Certificate(in);
+    in.close();
+    return cert;
+  }
+
+}