/**
* Returns get response for the {@code GetFolders*} commands. This is simply a helper method.
*
* @param command the current command, should be only GetFolders or GetFoldersAndFiles
* @param the current resource type
* @param currentFolder the current folder
* @param constructedUrl the final URL
* @return the get response instance associated with this request
* @throws InvalidCurrentFolderException if the current folder name is invalid or does not exist
* within the underlying backend
* @throws ReadException if the file attributes and/or folder names could not be read due to some
* reason
*/
private GetResponse getFoldersAndOrFiles(
final Command command,
final ResourceType type,
final String currentFolder,
final String constructedUrl)
throws InvalidCurrentFolderException, ReadException {
final GetResponse getResponse = new GetResponse(command, type, currentFolder, constructedUrl);
getResponse.setFolders(this.connector.getFolders(type, currentFolder));
if (command.equals(Command.GET_FOLDERS_AND_FILES)) {
getResponse.setFiles(this.connector.getFiles(type, currentFolder));
}
return getResponse;
}
/**
* Called by the connector servlet to handle a {@code GET} request. In particular, it handles the
* {@link Command#GET_FOLDERS GetFolders}, {@link Command#GET_FOLDERS_AND_FILES
* GetFoldersAndFiles} and {@link Command#CREATE_FOLDER CreateFolder} commands.
*
* @param request the current request instance
* @return the get response instance associated with this request
*/
GetResponse doGet(final HttpServletRequest request) {
Dispatcher.logger.debug("Entering Dispatcher#doGet");
final Context context = ThreadLocalData.getContext();
context.logBaseParameters();
GetResponse getResponse = null;
// check parameters
if (!Command.isValidForGet(context.getCommandStr())) {
getResponse = GetResponse.getInvalidCommandError();
} else if (!ResourceType.isValidType(context.getTypeStr())) {
getResponse = GetResponse.getInvalidResourceTypeError();
} else if (!UtilsFile.isValidPath(context.getCurrentFolderStr())) {
getResponse = GetResponse.getInvalidCurrentFolderError();
} else {
// in contrast to doPost the referrer has to send an explicit type
final ResourceType type = context.getResourceType();
final Command command = context.getCommand();
// check permissions for user action
if ((command.equals(Command.GET_FOLDERS) || command.equals(Command.GET_FOLDERS_AND_FILES))
&& !RequestCycleHandler.isGetResourcesEnabled(request)) {
getResponse = GetResponse.getGetResourcesDisabledError();
} else if (command.equals(Command.CREATE_FOLDER)
&& !RequestCycleHandler.isCreateFolderEnabled(request)) {
getResponse = GetResponse.getCreateFolderDisabledError();
} else {
// make the connector calls, catch its exceptions and generate
// the proper response object
try {
if (command.equals(Command.CREATE_FOLDER)) {
final String newFolderNameStr = request.getParameter("NewFolderName");
Dispatcher.logger.debug("Parameter NewFolderName: {}", newFolderNameStr);
final String sanitizedNewFolderNameStr = UtilsFile.sanitizeFolderName(newFolderNameStr);
if (Utils.isEmpty(sanitizedNewFolderNameStr)) {
getResponse = GetResponse.getInvalidNewFolderNameError();
} else {
Dispatcher.logger.debug(
"Parameter NewFolderName (sanitized): {}", sanitizedNewFolderNameStr);
this.connector.createFolder(
type, context.getCurrentFolderStr(), sanitizedNewFolderNameStr);
getResponse = GetResponse.getOK();
}
} else if (command.equals(Command.GET_FOLDERS)
|| command.equals(Command.GET_FOLDERS_AND_FILES)) {
final String url =
UtilsResponse.getUrl(
RequestCycleHandler.getUserFilesPath(request),
type,
context.getCurrentFolderStr());
getResponse =
this.getFoldersAndOrFiles(command, type, context.getCurrentFolderStr(), url);
}
} catch (final InvalidCurrentFolderException e) {
getResponse = GetResponse.getInvalidCurrentFolderError();
} catch (final InvalidNewFolderNameException e) {
getResponse = GetResponse.getInvalidNewFolderNameError();
} catch (final FolderAlreadyExistsException e) {
getResponse = GetResponse.getFolderAlreadyExistsError();
} catch (final WriteException e) {
getResponse = GetResponse.getCreateFolderWriteError();
} catch (final ReadException e) {
getResponse = GetResponse.getGetResourcesReadError();
}
}
}
Dispatcher.logger.debug("Exiting Dispatcher#doGet");
return getResponse;
}