src/eu/alefzero/owncloud/authenticator/ConnectionCheckerRunnable.java

   1 /* ownCloud Android client application
   2  *   Copyright (C) 2012 Bartek Przybylski
   3  *
   4  *   This program is free software: you can redistribute it and/or modify
   5  *   it under the terms of the GNU General Public License as published by
   6  *   the Free Software Foundation, either version 3 of the License, or
   7  *   (at your option) any later version.
   8  *
   9  *   This program is distributed in the hope that it will be useful,
  10  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  *   GNU General Public License for more details.
  13  *
  14  *   You should have received a copy of the GNU General Public License
  15  *   along with this program.  If not, see <http://www.gnu.org/licenses/>.
  16  *
  17  */
  18
  19 package eu.alefzero.owncloud.authenticator;
  20
  21 import java.net.ConnectException;
  22 import java.net.UnknownHostException;
  23
  24 import javax.net.ssl.SSLHandshakeException;
  25
  26 import org.apache.commons.httpclient.HttpStatus;
  27 import org.apache.commons.httpclient.methods.GetMethod;
  28 import org.json.JSONException;
  29 import org.json.JSONObject;
  30
  31 import eu.alefzero.owncloud.AccountUtils;
  32 import eu.alefzero.owncloud.authenticator.OnConnectCheckListener.ResultType;
  33 import eu.alefzero.owncloud.utils.OwnCloudVersion;
  34 import eu.alefzero.webdav.WebdavClient;
  35 import android.content.Context;
  36 import android.net.ConnectivityManager;
  37 import android.net.Uri;
  38 import android.os.Handler;
  39 import android.util.Log;
  40
  41 public class ConnectionCheckerRunnable implements Runnable {
  42     private static final String TAG = "ConnectionCheckerRunnable";
  43     private OnConnectCheckListener mListener;
  44     private String mUrl;
  45     private Handler mHandler;
  46     private ResultType mLatestResult;
  47     private Context mContext;
  48     private OwnCloudVersion mOCVersion;
  49
  50     public void setListener(OnConnectCheckListener listener, Handler handler) {
  51         mListener = listener;
  52         mHandler = handler;
  53     }
  54
  55     public ConnectionCheckerRunnable(String url, Context context) {
  56         mListener = null;
  57         mHandler = null;
  58         mUrl = url;
  59         mContext = context;
  60         mOCVersion = null;
  61     }
  62
  63     @Override
  64     public void run() {
  65
  66         if (!isOnline()) {
  67             postResult(ResultType.NO_NETWORK_CONNECTION);
  68             return;
  69         }
  70         if (mUrl.startsWith("http://") || mUrl.startsWith("https://")) {
  71             mLatestResult = ResultType.OK;
  72             tryConnection(Uri.parse(mUrl + AccountUtils.STATUS_PATH));
  73             postResult(mLatestResult);
  74         } else {
  75             Uri uri = Uri.parse("https://" + mUrl + AccountUtils.STATUS_PATH);
  76             if (tryConnection(uri)) {
  77                 postResult(ResultType.OK);
  78                 return;
  79             }
  80             Log.d(TAG,
  81                     "establishing secure connection failed, trying non secure connection");
  82             uri = Uri.parse("http://" + mUrl + AccountUtils.STATUS_PATH);
  83
  84             if (tryConnection(uri)) {
  85                 postResult(ResultType.OK_NO_SSL);
  86                 return;
  87             }
  88             postResult(mLatestResult);
  89         }
  90     }
  91
  92     public OwnCloudVersion getDiscoveredVersion() {
  93         return mOCVersion;
  94     }
  95
  96     private boolean tryConnection(Uri uri) {
  97         WebdavClient wc = new WebdavClient(uri);
  98         wc.allowUnsignedCertificates();
  99         GetMethod get = new GetMethod(uri.toString());
 100         boolean retval = false;
 101         try {
 102             int status = wc.executeMethod(get);
 103             switch (status) {
 104             case HttpStatus.SC_OK: {
 105                 String response = get.getResponseBodyAsString();
 106                 JSONObject json = new JSONObject(response);
 107                 if (!json.getBoolean("installed")) {
 108                     mLatestResult = ResultType.INSTANCE_NOT_CONFIGURED;
 109                     break;
 110                 }
 111                 mOCVersion = new OwnCloudVersion(json.getString("version"));
 112                 if (!mOCVersion.isVersionValid())
 113                     break;
 114                 retval = true;
 115                 break;
 116             }
 117             case HttpStatus.SC_NOT_FOUND:
 118                 mLatestResult = ResultType.FILE_NOT_FOUND;
 119                 break;
 120             case HttpStatus.SC_INTERNAL_SERVER_ERROR:
 121                 mLatestResult = ResultType.INSTANCE_NOT_CONFIGURED;
 122                 break;
 123             default:
 124                 mLatestResult = ResultType.UNKNOWN_ERROR;
 125                 Log.e(TAG, "Not handled status received from server: " + status);
 126             }
 127
 128         } catch (Exception e) {
 129             if (e instanceof UnknownHostException
 130                     || e instanceof ConnectException) {
 131                 mLatestResult = ResultType.HOST_NOT_AVAILABLE;
 132             } else if (e instanceof JSONException) {
 133                 mLatestResult = ResultType.INSTANCE_NOT_CONFIGURED;
 134             } else if (e instanceof SSLHandshakeException) {
 135                 mLatestResult = ResultType.SSL_INIT_ERROR;
 136             } else {
 137                 mLatestResult = ResultType.UNKNOWN_ERROR;
 138             }
 139             e.printStackTrace();
 140         }
 141
 142         return retval;
 143     }
 144
 145     private boolean isOnline() {
 146         ConnectivityManager cm = (ConnectivityManager) mContext
 147                 .getSystemService(Context.CONNECTIVITY_SERVICE);
 148         return cm != null && cm.getActiveNetworkInfo() != null
 149                 && cm.getActiveNetworkInfo().isConnectedOrConnecting();
 150     }
 151
 152     private void postResult(final ResultType result) {
 153         if (mHandler != null && mListener != null) {
 154             mHandler.post(new Runnable() {
 155                 @Override
 156                 public void run() {
 157                     mListener.onConnectionCheckResult(result);
 158                 }
 159             });
 160         }
 161     }
 162
 163 }