android: Add KeyStoreSpi implementation that uses LocalCertificateStore

src/frontends/android/src/org/strongswan/android/security/LocalCertificateKeyStoreSpi.java

@@ -0,0 +1,139 @@
+/*
+ * Copyright (C) 2014 Tobias Brunner
+ * Hochschule fuer Technik Rapperswil
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
+ *
+ * This program 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
+ * for more details.
+ */
+
+package org.strongswan.android.security;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.OutputStream;
+import java.security.Key;
+import java.security.KeyStoreException;
+import java.security.KeyStoreSpi;
+import java.security.NoSuchAlgorithmException;
+import java.security.UnrecoverableKeyException;
+import java.security.cert.Certificate;
+import java.security.cert.CertificateException;
+import java.util.Collections;
+import java.util.Date;
+import java.util.Enumeration;
+
+public class LocalCertificateKeyStoreSpi extends KeyStoreSpi
+{
+	private final LocalCertificateStore mStore = new LocalCertificateStore();
+
+	@Override
+	public Key engineGetKey(String alias, char[] password) throws NoSuchAlgorithmException, UnrecoverableKeyException
+	{
+		return null;
+	}
+
+	@Override
+	public Certificate[] engineGetCertificateChain(String alias)
+	{
+		return null;
+	}
+
+	@Override
+	public Certificate engineGetCertificate(String alias)
+	{
+		return mStore.getCertificate(alias);
+	}
+
+	@Override
+	public Date engineGetCreationDate(String alias)
+	{
+		return mStore.getCreationDate(alias);
+	}
+
+	@Override
+	public void engineSetKeyEntry(String alias, Key key, char[] password, Certificate[] chain) throws KeyStoreException
+	{
+		throw new UnsupportedOperationException();
+	}
+
+	@Override
+	public void engineSetKeyEntry(String alias, byte[] key, Certificate[] chain) throws KeyStoreException
+	{
+		throw new UnsupportedOperationException();
+	}
+
+	@Override
+	public void engineSetCertificateEntry(String alias, Certificate cert) throws KeyStoreException
+	{
+		/* we ignore the given alias as the store calculates it on its own,
+		 * duplicates are replaced */
+		if (!mStore.addCertificate(cert))
+		{
+			throw new KeyStoreException();
+		}
+	}
+
+	@Override
+	public void engineDeleteEntry(String alias) throws KeyStoreException
+	{
+		mStore.deleteCertificate(alias);
+	}
+
+	@Override
+	public Enumeration<String> engineAliases()
+	{
+		return Collections.enumeration(mStore.aliases());
+	}
+
+	@Override
+	public boolean engineContainsAlias(String alias)
+	{
+		return mStore.containsAlias(alias);
+	}
+
+	@Override
+	public int engineSize()
+	{
+		return mStore.aliases().size();
+	}
+
+	@Override
+	public boolean engineIsKeyEntry(String alias)
+	{
+		return false;
+	}
+
+	@Override
+	public boolean engineIsCertificateEntry(String alias)
+	{
+		return engineContainsAlias(alias);
+	}
+
+	@Override
+	public String engineGetCertificateAlias(Certificate cert)
+	{
+		return mStore.getCertificateAlias(cert);
+	}
+
+	@Override
+	public void engineStore(OutputStream stream, char[] password) throws IOException, NoSuchAlgorithmException, CertificateException
+	{
+		throw new UnsupportedOperationException();
+	}
+
+	@Override
+	public void engineLoad(InputStream stream, char[] password) throws IOException, NoSuchAlgorithmException, CertificateException
+	{
+		if (stream != null)
+		{
+			throw new UnsupportedOperationException();
+		}
+	}
+}