Main.java Source code

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Here is the source code for Main.java

Source

//package com.java2s;
/* ownCloud Android client application
 *   Copyright (C) 2012-2013 ownCloud Inc.
 *
 *   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.
 *
 *   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.
 *
 *   You should have received a copy of the GNU General Public License
 *   along with this program.  If not, see <http://www.gnu.org/licenses/>.
 *
 */

import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;

import java.security.KeyStore;
import java.security.KeyStoreException;
import java.security.NoSuchAlgorithmException;
import java.security.cert.Certificate;
import java.security.cert.CertificateException;

import android.content.Context;

import android.util.Log;

public class Main {
    final private static String TAG = "OwnCloudClientFactory";
    private static String LOCAL_TRUSTSTORE_FILENAME = "knownServers.bks";
    private static String LOCAL_TRUSTSTORE_PASSWORD = "password";
    private static KeyStore mKnownServersStore = null;

    public static void addCertToKnownServersStore(Certificate cert, Context context)
            throws KeyStoreException, NoSuchAlgorithmException, CertificateException, IOException {
        KeyStore knownServers = getKnownServersStore(context);
        knownServers.setCertificateEntry(Integer.toString(cert.hashCode()), cert);
        FileOutputStream fos = null;
        try {
            fos = context.openFileOutput(LOCAL_TRUSTSTORE_FILENAME, Context.MODE_PRIVATE);
            knownServers.store(fos, LOCAL_TRUSTSTORE_PASSWORD.toCharArray());
        } finally {
            fos.close();
        }
    }

    /**
     * Returns the local store of reliable server certificates, explicitly accepted by the user.
     * 
     * Returns a KeyStore instance with empty content if the local store was never created.
     * 
     * Loads the store from the storage environment if needed.
     * 
     * @param context                       Android context where the operation is being performed.
     * @return                              KeyStore instance with explicitly-accepted server certificates. 
     * @throws KeyStoreException            When the KeyStore instance could not be created.
     * @throws IOException                  When an existing local trust store could not be loaded.
     * @throws NoSuchAlgorithmException     When the existing local trust store was saved with an unsupported algorithm.
     * @throws CertificateException         When an exception occurred while loading the certificates from the local trust store.
     */
    private static KeyStore getKnownServersStore(Context context)
            throws KeyStoreException, IOException, NoSuchAlgorithmException, CertificateException {
        if (mKnownServersStore == null) {
            //mKnownServersStore = KeyStore.getInstance("BKS");
            mKnownServersStore = KeyStore.getInstance(KeyStore.getDefaultType());
            File localTrustStoreFile = new File(context.getFilesDir(), LOCAL_TRUSTSTORE_FILENAME);
            Log.d(TAG, "Searching known-servers store at " + localTrustStoreFile.getAbsolutePath());
            if (localTrustStoreFile.exists()) {
                InputStream in = new FileInputStream(localTrustStoreFile);
                try {
                    mKnownServersStore.load(in, LOCAL_TRUSTSTORE_PASSWORD.toCharArray());
                } finally {
                    in.close();
                }
            } else {
                mKnownServersStore.load(null, LOCAL_TRUSTSTORE_PASSWORD.toCharArray()); // necessary to initialize an empty KeyStore instance
            }
        }
        return mKnownServersStore;
    }
}