FIX OC-2101: App crash when renaming a folder while the server is down or without internet connection

oc_framework-test-project/oc_framework-test-test/src/com/owncloud/android/oc_framework_test_project/test/RenameFileTest.java

@@ -151,7 +151,7 @@ public class RenameFileTest extends ActivityInstrumentationTestCase2<TestActivit
 		RemoteOperationResult result = mActivity.renameFile(mNewFolderName, mNewFolderPath, mOldFolderName, mOldFolderPath);
 		assertTrue(result.isSuccess());
 		
-		result = mActivity.renameFile(mNewFileName, mNewFilePath, mOldFileName, mOldFilePath);
+		result = mActivity.renameFile(mNewFileName + mFileExtension, mNewFilePath + mFileExtension, mOldFileName, mOldFilePath);
 		assertTrue(result.isSuccess());
 	}
 	

oc_framework/src/com/owncloud/android/oc_framework/operations/remote/RenameRemoteFileOperation.java

@@ -66,8 +66,13 @@ public class RenameRemoteFileOperation extends RemoteOperation {
                 return new RemoteOperationResult(ResultCode.OK);
             }
         
+            // check if a file with the new name already exists
+            if (client.existsFile(mNewRemotePath)) {
+            	return new RemoteOperationResult(ResultCode.INVALID_OVERWRITE);
+            }
+            
             move = new LocalMoveMethod( client.getBaseUri() + WebdavUtils.encodePath(mOldRemotePath),
-                                        client.getBaseUri() + WebdavUtils.encodePath(mNewRemotePath));
+            		client.getBaseUri() + WebdavUtils.encodePath(mNewRemotePath));
             int status = client.executeMethod(move, RENAME_READ_TIMEOUT, RENAME_CONNECTION_TIMEOUT);
             
             move.getResponseBodyAsString(); // exhaust response, although not interesting

src/com/owncloud/android/operations/RenameFileOperation.java

@@ -93,24 +93,23 @@ public class RenameFileOperation extends RemoteOperation {
                 mNewRemotePath += OCFile.PATH_SEPARATOR;
             }
 
-            // check if a file with the new name already exists
-            if (client.existsFile(mNewRemotePath) ||                             // remote check could fail by network failure. by indeterminate behavior of HEAD for folders ... 
-                    mStorageManager.getFileByPath(mNewRemotePath) != null) {     // ... so local check is convenient
+            // ckeck local overwrite
+            if (mStorageManager.getFileByPath(mNewRemotePath) != null) {
                 return new RemoteOperationResult(ResultCode.INVALID_OVERWRITE);
             }
-        
-        RenameRemoteFileOperation operation = new RenameRemoteFileOperation(mFile.getFileName(), mFile.getRemotePath(), mNewName, 
-                mNewRemotePath);
-        result = operation.execute(client);
+            
+            RenameRemoteFileOperation operation = new RenameRemoteFileOperation(mFile.getFileName(), mFile.getRemotePath(), mNewName, 
+                    mNewRemotePath);
+            result = operation.execute(client);
 
-        if (result.isSuccess()) {
-            if (mFile.isFolder()) {
-                saveLocalDirectory();
+            if (result.isSuccess()) {
+                if (mFile.isFolder()) {
+                    saveLocalDirectory();
 
-            } else {
-                saveLocalFile();
+                } else {
+                    saveLocalFile();
+                }
             }
-        }
         } catch (HttpException e) {
             Log_OC.e(TAG, "Rename " + mFile.getRemotePath() + " to " + ((mNewRemotePath==null) ? mNewName : mNewRemotePath) + ": " + 
                     ((result!= null) ? result.getLogMessage() : ""), e);