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