SSL connections update: notice about untrusted certificates and allow the user save...

[pub/Android/ownCloud.git] / src / com / owncloud / android / authenticator / ConnectionCheckOperation.java

diff --git a/src/com/owncloud/android/authenticator/ConnectionCheckOperation.java b/src/com/owncloud/android/authenticator/ConnectionCheckOperation.java
new file mode 100644 (file)
index 0000000..de11051
--- /dev/null
+++ b/src/com/owncloud/android/authenticator/ConnectionCheckOperation.java
@@ -0,0 +1,137 @@
+/* ownCloud Android client application
+ *   Copyright (C) 2012 Bartek Przybylski
+ *
+ *   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 3 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/>.
+ *
+ */
+
+package com.owncloud.android.authenticator;
+
+import org.apache.commons.httpclient.HttpStatus;
+import org.apache.commons.httpclient.methods.GetMethod;
+import org.json.JSONException;
+import org.json.JSONObject;
+
+import com.owncloud.android.AccountUtils;
+import com.owncloud.android.network.SslAnalyzer;
+import com.owncloud.android.operations.RemoteOperation;
+import com.owncloud.android.operations.RemoteOperationResult;
+import com.owncloud.android.utils.OwnCloudVersion;
+
+import eu.alefzero.webdav.WebdavClient;
+import android.content.Context;
+import android.net.ConnectivityManager;
+import android.net.Uri;
+import android.util.Log;
+
+public class ConnectionCheckOperation extends RemoteOperation {
+    
+    /** Maximum time to wait for a response from the server when the connection is being tested, in MILLISECONDs.  */
+    public static final int TRY_CONNECTION_TIMEOUT = 5000;
+    
+    private static final String TAG = ConnectionCheckerRunnable.class.getCanonicalName();
+    
+    private String mUrl;
+    private RemoteOperationResult mLatestResult;
+    private Context mContext;
+    private OwnCloudVersion mOCVersion;
+
+    public ConnectionCheckOperation(String url, Context context) {
+        mUrl = url;
+        mContext = context;
+        mOCVersion = null;
+    }
+    
+    public OwnCloudVersion getDiscoveredVersion() {
+        return mOCVersion;
+    }
+
+    private boolean tryConnection(WebdavClient wc, String urlSt) {
+        boolean retval = false;
+        GetMethod get = null;
+        try {
+            get = new GetMethod(urlSt);
+            int status = wc.executeMethod(get, TRY_CONNECTION_TIMEOUT, TRY_CONNECTION_TIMEOUT);
+            String response = get.getResponseBodyAsString();
+            if (status == HttpStatus.SC_OK) {
+                JSONObject json = new JSONObject(response);
+                if (!json.getBoolean("installed")) {
+                    mLatestResult = new RemoteOperationResult(RemoteOperationResult.ResultCode.INSTANCE_NOT_CONFIGURED);
+                } else {
+                    mOCVersion = new OwnCloudVersion(json.getString("version"));
+                    if (!mOCVersion.isVersionValid()) {
+                        mLatestResult = new RemoteOperationResult(RemoteOperationResult.ResultCode.BAD_OC_VERSION);
+                        
+                    } else {
+                        retval = true;
+                    }
+                }
+                
+            } else {
+                mLatestResult = new RemoteOperationResult(false, status);
+            }
+
+        } catch (JSONException e) {
+            mLatestResult = new RemoteOperationResult(RemoteOperationResult.ResultCode.INSTANCE_NOT_CONFIGURED);
+            //Log.e(TAG, "JSON exception while trying connection (instance not configured) ", e);
+            
+        } catch (Exception e) {
+            mLatestResult = new RemoteOperationResult(e);
+            //Log.e(TAG, "Unexpected exception while trying connection", e);
+            
+        } finally {
+            if (get != null)
+                get.releaseConnection();
+        }
+
+        return retval;
+    }
+
+    private boolean isOnline() {
+        ConnectivityManager cm = (ConnectivityManager) mContext
+                .getSystemService(Context.CONNECTIVITY_SERVICE);
+        return cm != null && cm.getActiveNetworkInfo() != null
+                && cm.getActiveNetworkInfo().isConnectedOrConnecting();
+    }
+
+       @Override
+       protected RemoteOperationResult run(WebdavClient client) {
+        if (!isOnline()) {
+               return new RemoteOperationResult(RemoteOperationResult.ResultCode.NO_NETWORK_CONNECTION);
+        }
+        if (mUrl.startsWith("http://") || mUrl.startsWith("https://")) {
+            mLatestResult = new RemoteOperationResult(
+                                mUrl.startsWith("https://") ? RemoteOperationResult.ResultCode.OK_SSL : RemoteOperationResult.ResultCode.OK_NO_SSL
+                            );
+            tryConnection(client, mUrl + AccountUtils.STATUS_PATH);
+            return mLatestResult;
+            
+        } else {
+            client.setBaseUri(Uri.parse("https://" + mUrl + AccountUtils.STATUS_PATH));
+            if (tryConnection(client, "https://" + mUrl + AccountUtils.STATUS_PATH)) {
+                return new RemoteOperationResult(RemoteOperationResult.ResultCode.OK_SSL);
+                               
+            } else if (!SslAnalyzer.isRecoverable(mLatestResult)) {
+                
+                Log.d(TAG, "establishing secure connection failed, trying non secure connection");
+                client.setBaseUri(Uri.parse("http://" + mUrl + AccountUtils.STATUS_PATH));
+                if (tryConnection(client, "http://" + mUrl + AccountUtils.STATUS_PATH)) {
+                    return new RemoteOperationResult(RemoteOperationResult.ResultCode.OK_NO_SSL);
+                }
+            }
+            return mLatestResult;
+        }
+       }
+
+}