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.operations.RemoteOperation;
  28 import com.owncloud.android.operations.RemoteOperationResult;
  29 import com.owncloud.android.utils.OwnCloudVersion;
  30
  31 import eu.alefzero.webdav.WebdavClient;
  32 import android.content.Context;
  33 import android.net.ConnectivityManager;
  34 import android.net.Uri;
  35 import android.util.Log;
  36
  37 public class ConnectionCheckOperation extends RemoteOperation {
  38
  39     /** Maximum time to wait for a response from the server when the connection is being tested, in MILLISECONDs.  */
  40     public static final int TRY_CONNECTION_TIMEOUT = 5000;
  41
  42     private static final String TAG = ConnectionCheckOperation.class.getCanonicalName();
  43
  44     private String mUrl;
  45     private RemoteOperationResult mLatestResult;
  46     private Context mContext;
  47     private OwnCloudVersion mOCVersion;
  48
  49     public ConnectionCheckOperation(String url, Context context) {
  50         mUrl = url;
  51         mContext = context;
  52         mOCVersion = null;
  53     }
  54
  55     public OwnCloudVersion getDiscoveredVersion() {
  56         return mOCVersion;
  57     }
  58
  59     private boolean tryConnection(WebdavClient wc, String urlSt) {
  60         boolean retval = false;
  61         GetMethod get = null;
  62         try {
  63             get = new GetMethod(urlSt);
  64             int status = wc.executeMethod(get, TRY_CONNECTION_TIMEOUT, TRY_CONNECTION_TIMEOUT);
  65             String response = get.getResponseBodyAsString();
  66             if (status == HttpStatus.SC_OK) {
  67                 JSONObject json = new JSONObject(response);
  68                 if (!json.getBoolean("installed")) {
  69                     mLatestResult = new RemoteOperationResult(RemoteOperationResult.ResultCode.INSTANCE_NOT_CONFIGURED);
  70                 } else {
  71                     mOCVersion = new OwnCloudVersion(json.getString("version"));
  72                     if (!mOCVersion.isVersionValid()) {
  73                         mLatestResult = new RemoteOperationResult(RemoteOperationResult.ResultCode.BAD_OC_VERSION);
  74
  75                     } else {
  76                         mLatestResult = new RemoteOperationResult(urlSt.startsWith("https://") ?
  77                                                                     RemoteOperationResult.ResultCode.OK_SSL :
  78                                                                     RemoteOperationResult.ResultCode.OK_NO_SSL
  79                             );
  80
  81                         retval = true;
  82                     }
  83                 }
  84
  85             } else {
  86                 mLatestResult = new RemoteOperationResult(false, status);
  87             }
  88
  89         } catch (JSONException e) {
  90             mLatestResult = new RemoteOperationResult(RemoteOperationResult.ResultCode.INSTANCE_NOT_CONFIGURED);
  91
  92         } catch (Exception e) {
  93             mLatestResult = new RemoteOperationResult(e);
  94
  95         } finally {
  96             if (get != null)
  97                 get.releaseConnection();
  98         }
  99
 100         if (mLatestResult.isSuccess()) {
 101             Log.i(TAG, "Connection check at " + urlSt + ": " + mLatestResult.getLogMessage());
 102
 103         } else if (mLatestResult.getException() != null) {
 104             Log.e(TAG, "Connection check at " + urlSt + ": " + mLatestResult.getLogMessage(), mLatestResult.getException());
 105
 106         } else {
 107             Log.e(TAG, "Connection check at " + urlSt + ": " + mLatestResult.getLogMessage());
 108         }
 109
 110         return retval;
 111     }
 112
 113     private boolean isOnline() {
 114         ConnectivityManager cm = (ConnectivityManager) mContext
 115                 .getSystemService(Context.CONNECTIVITY_SERVICE);
 116         return cm != null && cm.getActiveNetworkInfo() != null
 117                 && cm.getActiveNetworkInfo().isConnectedOrConnecting();
 118     }
 119
 120         @Override
 121         protected RemoteOperationResult run(WebdavClient client) {
 122         if (!isOnline()) {
 123                 return new RemoteOperationResult(RemoteOperationResult.ResultCode.NO_NETWORK_CONNECTION);
 124         }
 125         if (mUrl.startsWith("http://") || mUrl.startsWith("https://")) {
 126             tryConnection(client, mUrl + AccountUtils.STATUS_PATH);
 127
 128         } else {
 129             client.setBaseUri(Uri.parse("https://" + mUrl + AccountUtils.STATUS_PATH));
 130             boolean httpsSuccess = tryConnection(client, "https://" + mUrl + AccountUtils.STATUS_PATH);
 131             if (!httpsSuccess && !mLatestResult.isSslRecoverableException()) {
 132                 Log.d(TAG, "establishing secure connection failed, trying non secure connection");
 133                 client.setBaseUri(Uri.parse("http://" + mUrl + AccountUtils.STATUS_PATH));
 134                 tryConnection(client, "http://" + mUrl + AccountUtils.STATUS_PATH);
 135             }
 136         }
 137         return mLatestResult;
 138         }
 139
 140 }