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/* |
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Dateiverwaltung - File management in your browser |
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Copyright (C) 2017 Ulrich Hilger, http://uhilger.de |
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This program is free software: you can redistribute it and/or modify |
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it under the terms of the GNU Affero General Public License as |
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published by the Free Software Foundation, either version 3 of the |
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License, or (at your option) any later version. |
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This program is distributed in the hope that it will be useful, |
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but WITHOUT ANY WARRANTY; without even the implied warranty of |
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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GNU Affero General Public License for more details. |
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You should have received a copy of the GNU Affero General Public License |
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along with this program. If not, see <http://www.gnu.org/licenses/>. |
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*/ |
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package de.uhilger.filecms.web; |
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import de.uhilger.wbx.WbxUtils; |
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import java.io.File; |
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import java.io.IOException; |
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import java.util.logging.Level; |
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import java.util.logging.Logger; |
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import javax.servlet.ServletContext; |
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import javax.servlet.ServletContextEvent; |
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import javax.servlet.ServletContextListener; |
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import org.apache.commons.io.FileUtils; |
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/** |
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* Initialisieren der Dateiverwaltung |
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*/ |
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/* |
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der folgende Eintrag kann z.B. in $CATALINA_BASE/conf/context.xml |
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eingetragen werden |
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<Environment |
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name="wbxFileBase" |
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type="java.lang.String" |
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value="/media/wbx-data/cms" |
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override="false" |
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/> |
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*/ |
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public class Initialiser implements ServletContextListener { |
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private static final Logger logger = Logger.getLogger(Initialiser.class.getName()); |
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public static final String FILE_BASE = "filebase"; |
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public static final String DATENABLAGE = "datenAblage"; |
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public static final String WBX_FILE_BASE = "wbxFileBase"; |
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public static final String WBX_DATA_DIR = "wbx.data"; |
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public static final String WBX_DEPTH = "tiefe"; |
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public static final String WBX_DATA_FOLDER = "datenOrdner"; |
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/** |
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* Die Dateiablage wird entweder auf einen absoluten Pfad gesetzt, |
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* der im Deployment Descriptor hinterlegt werden kann oder, wenn |
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* dort nichts eingetragen ist, auf den hart kodierten Pfad |
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* der WebBox. |
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* |
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* @param ctx der ServletContext, in den die Angabe eingetragen wird. Dort |
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* ist anschliessend die Angabe unter Initialiser.FILE_BASE abrufbar |
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*/ |
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protected void ablageErmitteln(ServletContext ctx) { |
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//Object o = ctx.getInitParameter(DATENABLAGE); |
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//File wbxDaten = getDataDir(ctx, 2, "data/"); |
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//WbxUtils wu = new WbxUtils(); |
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//Object o = wu.getJNDIParameter(WBX_FILE_BASE, WbxUtils.EMPTY_STRING); |
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String dir = System.getProperty(WBX_DATA_DIR); |
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try { |
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if(dir != null) { |
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//String pfad = o.toString(); |
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if(dir.trim().length() > 0) { |
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ctx.setAttribute(FILE_BASE, dir); |
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logger.log(Level.INFO, "Daten-Ordner aus wbx.data: {0}", dir); |
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} else { |
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ctx.setAttribute(FILE_BASE, getDefaultDataDir(ctx).getAbsolutePath()); |
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} |
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} else { |
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ctx.setAttribute(FILE_BASE, getDefaultDataDir(ctx).getAbsolutePath()); |
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} |
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} catch(Exception ex) { |
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ctx.setAttribute(FILE_BASE, getDefaultDataDir(ctx).getAbsolutePath()); |
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} |
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} |
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private File getDefaultDataDir(ServletContext ctx) { |
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String tiefe = ctx.getInitParameter(WBX_DEPTH); |
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String ordnerName = ctx.getInitParameter(WBX_DATA_FOLDER); |
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return getDataDir(ctx, Integer.parseInt(tiefe), ordnerName); |
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} |
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/** |
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* Daten-Ordner relativ zum Ablageort des file-cms finden. |
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* |
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* Die Standard-Struktur einer WebBox sieht folgende Ordner vor |
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* |
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* wbx/apps |
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* wbx/data |
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* |
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* Liegt das file-cms z.B. im Ordner /home/ulrich/dev/srv/wbx-3/apps/file-cms |
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* kann von dort aus der Daten-Ordner mit |
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* getDataDir(ctx, 2, "data/") |
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* gefunden werden. |
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* |
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* @param ctx der ServletContext, in dem das file-cms laeuft |
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* @param tiefe Anzahl Ordner, die der Ablageort des file-cms vom |
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* Eltern-Ordner entfernt ist |
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* @param pfad der Pfad zum Daten-Ordner ausgehend vom Eltern-Ordner |
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* @return Daten-Ordner |
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*/ |
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private File getDataDir(ServletContext ctx, int tiefe, String pfad) { |
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File appsOrdner = new File(ctx.getRealPath("/")); |
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logger.log(Level.INFO, "Apps-Ordner: {0}", appsOrdner.getAbsolutePath()); |
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File wbx = new File(appsOrdner, ""); |
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for(int i = 0; i < tiefe; i++) { |
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wbx = wbx.getParentFile(); |
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} |
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logger.log(Level.INFO, "Wbx-Ordner: {0}", wbx.getAbsolutePath()); |
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File daten = new File(wbx, pfad); |
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logger.log(Level.INFO, "Daten-Ordner: {0}", daten.getAbsolutePath()); |
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return daten; |
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} |
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protected void ablageInitialisieren(ServletContext ctx) { |
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Object o = ctx.getAttribute(FILE_BASE); |
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if(o instanceof String) { |
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String targetDirName = (String) o; |
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File dataDir = new File(targetDirName, "www"); |
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if(!dataDir.exists()) { |
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dataDir.mkdirs(); |
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String srcPath = ctx.getRealPath("/"); // file-cms in webapps |
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File srcDir = new File(srcPath, "/META-INF/daten/www"); |
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dataDir = new File(targetDirName); |
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try { |
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FileUtils.copyDirectoryToDirectory(srcDir, dataDir); |
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srcDir = new File(srcPath, "/META-INF/daten/home"); |
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FileUtils.copyDirectoryToDirectory(srcDir, dataDir); |
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srcDir = new File(srcPath, "/META-INF/daten/dav"); |
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FileUtils.copyDirectoryToDirectory(srcDir, dataDir); |
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} catch (IOException ex) { |
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logger.log(Level.SEVERE, null, ex); |
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} |
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} |
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} |
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} |
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@Override |
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public void contextInitialized(ServletContextEvent sce) { |
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ServletContext ctx = sce.getServletContext(); |
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ablageErmitteln(ctx); |
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ablageInitialisieren(ctx); |
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} |
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@Override |
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public void contextDestroyed(ServletContextEvent sce) { |
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ServletContext ctx = sce.getServletContext(); |
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ctx.removeAttribute(FILE_BASE); |
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} |
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} |