| commit | author | age | ||
| 031c6b | 1 | /* |
| U | 2 | neon-fm - Dateiverwaltung fuer neon |
| 3 | Copyright (C) 2024 Ulrich Hilger | |
| 4 | ||
| 5 | This program is free software: you can redistribute it and/or modify | |
| 6 | it under the terms of the GNU Affero General Public License as | |
| 7 | published by the Free Software Foundation, either version 3 of the | |
| 8 | License, or (at your option) any later version. | |
| 9 | ||
| 10 | This program is distributed in the hope that it will be useful, | |
| 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 13 | GNU Affero General Public License for more details. | |
| 14 | ||
| 15 | You should have received a copy of the GNU Affero General Public License | |
| 16 | along with this program. If not, see <https://www.gnu.org/licenses/>. | |
| 17 | */ | |
| 18 | package de.uhilger.neon.fm; | |
| 19 | ||
| 20 | import com.sun.net.httpserver.HttpContext; | |
| 21 | import com.sun.net.httpserver.HttpExchange; | |
| 22 | import de.uhilger.neon.FileServer; | |
| 23 | import de.uhilger.neon.HttpHelper; | |
| 24 | import de.uhilger.neon.HttpResponder; | |
| 25 | import de.uhilger.fm.Catalog; | |
| 26 | import java.io.IOException; | |
| 27 | ||
| 28 | /** | |
| bb2648 | 29 | * Erzeugung einer Liste von Dateien und Ordnern |
| 031c6b | 30 | * |
| U | 31 | * @author Ulrich Hilger |
| 32 | * @version 0.1, 05.11.2024 | |
| 33 | */ | |
| 34 | public class FileCatalog extends AbstractFileActor { | |
| 35 | ||
| 36 | /** | |
| 37 | * <p>Diese Methode ist als Reaktion auf einen HTTP GET Aufruf an | |
| 38 | * folgenden URL gedacht und liefert eine Liste des Ordnerinhalts | |
| a9ce27 | 39 | * im JSON-Format in der HTTP-Antwort aus</p> |
| 031c6b | 40 | * |
| U | 41 | * <pre> |
| 42 | * Ordnerinhalt auflisten: | |
| 43 | * http://localhost:[port]/[kontext]/pfad/zum/ordner/ | |
| 44 | * </pre> | |
| 45 | * | |
| a9ce27 | 46 | * Die Methode liefert den Dateiinhalt in der HTTP-Antwort aus, |
| U | 47 | * wenn der URL eine Datei bezeichnet |
| 48 | * | |
| 031c6b | 49 | * @param exchange das Objekt mit Infos zu HTTP-Request, -Response usw. |
| U | 50 | */ |
| 51 | public void list(HttpExchange exchange) { | |
| 52 | try { | |
| 53 | init(exchange); | |
| 54 | HttpContext ctx = exchange.getHttpContext(); | |
| 55 | //String base = ctx.getAttributes().getOrDefault(FileServer.ATTR_FILE_BASE, "").toString(); | |
| 56 | if(base.length() == 0) { | |
| 57 | new HttpResponder().sendNotFound(exchange, exchange.getRequestURI().toString()); // not found | |
| 58 | } else { | |
| 59 | String fName = new HttpHelper().getFileName(exchange); | |
| 60 | if (fName.endsWith(FileServer.STR_SLASH)) { // Ordnerliste erzeugen | |
| 61 | String json = new Catalog().list(fName, ctx.getPath(), base); | |
| 62 | if (null != json) { | |
| 63 | new HttpResponder().antwortSenden(exchange, HttpResponder.SC_OK, json); | |
| 64 | } else { | |
| 65 | new HttpResponder().antwortSenden(exchange, HttpResponder.SC_OK, "{}"); // leere Liste | |
| 66 | } | |
| 67 | } else { | |
| 68 | new FileServer().serveFile(exchange); // Datei ausliefern | |
| 69 | } | |
| 70 | } | |
| 71 | } catch (IOException | IllegalArgumentException ex) { | |
| 72 | fehlerAntwort(exchange, ex); | |
| 73 | } finally { | |
| 74 | free(); | |
| 75 | } | |
| 76 | } | |
| 77 | } | |
