src/com/owncloud/android/authenticator/ConnectionCheckOperation.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 com.owncloud.android.authenticator;
  20
  21 import org.apache.commons.httpclient.HttpStatus;
  22 import org.apache.commons.httpclient.methods.GetMethod;
  23 import org.json.JSONException;
  24 import org.json.JSONObject;
  25
  26 import com.owncloud.android.AccountUtils;
  27 import com.owncloud.android.network.SslAnalyzer;
  28 import com.owncloud.android.operations.RemoteOperation;
  29 import com.owncloud.android.operations.RemoteOperationResult;
  30 import com.owncloud.android.utils.OwnCloudVersion;
  31
  32 import eu.alefzero.webdav.WebdavClient;
  33 import android.content.Context;
  34 import android.net.ConnectivityManager;
  35 import android.net.Uri;
  36 import android.util.Log;
  37
  38 public class ConnectionCheckOperation extends RemoteOperation {
  39
  40     /** Maximum time to wait for a response from the server when the connection is being tested, in MILLISECONDs.  */
  41     public static final int TRY_CONNECTION_TIMEOUT = 5000;
  42
  43     private static final String TAG = ConnectionCheckerRunnable.class.getCanonicalName();
  44
  45     private String mUrl;
  46     private RemoteOperationResult mLatestResult;
  47     private Context mContext;
  48     private OwnCloudVersion mOCVersion;
  49
  50     public ConnectionCheckOperation(String url, Context context) {
  51         mUrl = url;
  52         mContext = context;
  53         mOCVersion = null;
  54     }
  55
  56     public OwnCloudVersion getDiscoveredVersion() {
  57         return mOCVersion;
  58     }
  59
  60     private boolean tryConnection(WebdavClient wc, String urlSt) {
  61         boolean retval = false;
  62         GetMethod get = null;
  63         try {
  64             get = new GetMethod(urlSt);
  65             int status = wc.executeMethod(get, TRY_CONNECTION_TIMEOUT, TRY_CONNECTION_TIMEOUT);
  66             String response = get.getResponseBodyAsString();
  67             if (status == HttpStatus.SC_OK) {
  68                 JSONObject json = new JSONObject(response);
  69                 if (!json.getBoolean("installed")) {
  70                     mLatestResult = new RemoteOperationResult(RemoteOperationResult.ResultCode.INSTANCE_NOT_CONFIGURED);
  71                 } else {
  72                     mOCVersion = new OwnCloudVersion(json.getString("version"));
  73                     if (!mOCVersion.isVersionValid()) {
  74                         mLatestResult = new RemoteOperationResult(RemoteOperationResult.ResultCode.BAD_OC_VERSION);
  75
  76                     } else {
  77                         retval = true;
  78                     }
  79                 }
  80
  81             } else {
  82                 mLatestResult = new RemoteOperationResult(false, status);
  83             }
  84
  85         } catch (JSONException e) {
  86             mLatestResult = new RemoteOperationResult(RemoteOperationResult.ResultCode.INSTANCE_NOT_CONFIGURED);
  87             //Log.e(TAG, "JSON exception while trying connection (instance not configured) ", e);
  88
  89         } catch (Exception e) {
  90             mLatestResult = new RemoteOperationResult(e);
  91             //Log.e(TAG, "Unexpected exception while trying connection", e);
  92
  93         } finally {
  94             if (get != null)
  95                 get.releaseConnection();
  96         }
  97
  98         return retval;
  99     }
 100
 101     private boolean isOnline() {
 102         ConnectivityManager cm = (ConnectivityManager) mContext
 103                 .getSystemService(Context.CONNECTIVITY_SERVICE);
 104         return cm != null && cm.getActiveNetworkInfo() != null
 105                 && cm.getActiveNetworkInfo().isConnectedOrConnecting();
 106     }
 107
 108         @Override
 109         protected RemoteOperationResult run(WebdavClient client) {
 110         if (!isOnline()) {
 111                 return new RemoteOperationResult(RemoteOperationResult.ResultCode.NO_NETWORK_CONNECTION);
 112         }
 113         if (mUrl.startsWith("http://") || mUrl.startsWith("https://")) {
 114             mLatestResult = new RemoteOperationResult(
 115                                 mUrl.startsWith("https://") ? RemoteOperationResult.ResultCode.OK_SSL : RemoteOperationResult.ResultCode.OK_NO_SSL
 116                             );
 117             tryConnection(client, mUrl + AccountUtils.STATUS_PATH);
 118             return mLatestResult;
 119
 120         } else {
 121             client.setBaseUri(Uri.parse("https://" + mUrl + AccountUtils.STATUS_PATH));
 122             if (tryConnection(client, "https://" + mUrl + AccountUtils.STATUS_PATH)) {
 123                 return new RemoteOperationResult(RemoteOperationResult.ResultCode.OK_SSL);
 124
 125             } else if (!SslAnalyzer.isRecoverable(mLatestResult)) {
 126
 127                 Log.d(TAG, "establishing secure connection failed, trying non secure connection");
 128                 client.setBaseUri(Uri.parse("http://" + mUrl + AccountUtils.STATUS_PATH));
 129                 if (tryConnection(client, "http://" + mUrl + AccountUtils.STATUS_PATH)) {
 130                     return new RemoteOperationResult(RemoteOperationResult.ResultCode.OK_NO_SSL);
 131                 }
 132             }
 133             return mLatestResult;
 134         }
 135         }
 136
 137 }