/*
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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.api;
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import de.uhilger.filecms.data.FileRef;
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import de.uhilger.filecms.web.Initialiser;
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import de.uhilger.transit.Access;
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import de.uhilger.transit.web.RequestKontext;
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import de.uhilger.transit.web.WebKontext;
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import java.io.File;
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import java.security.Principal;
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import java.util.logging.Logger;
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import javax.servlet.ServletContext;
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import javax.servlet.http.HttpServletRequest;
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/**
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*
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*/
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public abstract class Api implements WebKontext, RequestKontext {
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protected ServletContext ctx;
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/** Zeiger zum Request, der zur Ausfuehrung fuehrte */
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protected HttpServletRequest request;
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private static final Logger logger = Logger.getLogger(Api.class.getName());
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public static final String WBX_DATA_PATH = "daten/";
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public static final String PUB_DIR_PATH = "www/";
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public static final String HOME_DIR_PATH = "home/";
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public static final String DAV_DIR_PATH = "dav/";
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public static final String PUB_DIR_NAME = "Oeffentlich";
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//public static final String HOME_DIR_NAME = "Persoenlicher Ordner";
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public static final String HOME_DIR_NAME = "Persoenlich";
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public static final String DAV_DIR_NAME = "Austausch";
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public static final String WBX_ADMIN_ROLE = "wbxAdmin";
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public static final String WBX_BASE = "$basis";
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public static final String WBX_DATA = "$daten";
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public static final String DAV_DATA = "$dav";
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/**
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* Einen relativen Pfad in einen absoluten Pfad der WebBox
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* aufloesen.
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*
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* Nur die absoluten Pfade zu PUB_DIR_NAME, HOME_DIR_NAME
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* sowie WBX_BASE und WBX_DATA werden ausgegeben. Letztere
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* beiden nur fuer Nutzer mit der Rolle WBX_ADMIN_ROLE.
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*
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* D.h., es werden nur Pfade aufgeloest, die sich innerhalb
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* des Ordners der WeBox befinden.
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*
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* @param relPath
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* @return
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*/
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protected File getTargetDir(String relPath) {
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logger.fine(relPath);
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File targetDir;
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String targetPath = null;
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if(relPath.startsWith(PUB_DIR_NAME)) {
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targetPath = PUB_DIR_PATH + getUserName() + relPath.substring(PUB_DIR_NAME.length());
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targetDir = new File(getBase().getAbsolutePath(), targetPath);
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} else if(relPath.startsWith(HOME_DIR_NAME)) {
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targetPath = HOME_DIR_PATH + getUserName() + relPath.substring(HOME_DIR_NAME.length());
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targetDir = new File(getBase().getAbsolutePath(), targetPath);
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} else if(relPath.startsWith(DAV_DIR_NAME)) {
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targetPath = DAV_DIR_PATH + /* getUserName() +*/ relPath.substring(DAV_DIR_NAME.length());
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targetDir = new File(getBase().getAbsolutePath(), targetPath);
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} else if(getRequest().isUserInRole(WBX_ADMIN_ROLE)) {
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logger.fine("in admin role");
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if(relPath.startsWith(WBX_BASE)) {
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logger.fine("is base");
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targetPath = getCatalinaBase(ctx);
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targetDir = new File(targetPath, relPath.substring(WBX_BASE.length()));
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} else if(relPath.startsWith(WBX_DATA)) {
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targetPath = getWbxDataDir(ctx);
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logger.fine("is data, combine " + targetPath + ' ' + relPath.substring(WBX_DATA.length()));
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targetDir = new File(targetPath, relPath.substring(WBX_DATA.length()));
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} else {
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targetDir = getDefaultDir(relPath);
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}
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} else {
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// kann eigentlich nicht sein..
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targetDir = getDefaultDir(relPath);
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}
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logger.fine("returning targetDir " + targetDir.getAbsolutePath());
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//File targetDir = new File(getBase().getAbsolutePath(), targetPath);
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return targetDir;
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}
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protected File getDefaultDir(String relPath) {
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String targetPath = PUB_DIR_PATH + getUserName() + relPath.substring(PUB_DIR_NAME.length());
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return new File(getBase().getAbsolutePath(), targetPath);
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}
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protected FileRef getBase() {
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FileRef base = null;
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Object o = getFileBase(ctx);
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if(o instanceof File) {
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File file = (File) o;
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base = new FileRef(file.getAbsolutePath(), file.isDirectory());
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}
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return base;
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}
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/* -------------- Hilfsfunktionen --------------- */
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/**
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* Das Datenverzeichnis der WebBox ermitteln
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* @return Ordner $wbx/daten
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*/
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protected File getFileBase(ServletContext ctx) {
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File file = null;
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Object o = ctx.getAttribute(Initialiser.FILE_BASE);
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if(o instanceof String) {
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String baseStr = (String) o;
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logger.fine(baseStr);
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file = new File(baseStr);
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}
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return file;
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}
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/**
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* Den absoluten Pfad zum Verzeichnis ermitteln das gemaess der
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* Tomcat-Doku als CATALINA_BASE der WebBox gilt
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* @return absoluter Pfad zu $wbx/sys/base
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*/
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protected String getCatalinaBase(ServletContext ctx) {
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String path = ctx.getRealPath("/");
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logger.fine("getRealPath: " + path); // file-cms in webapps
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File file = new File(path);
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file = file.getParentFile().getParentFile();
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return file.getAbsolutePath();
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}
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/**
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* Den absoluten Pfad zum Datenverzeichnis der WebBox ermitteln
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* @return absoluter Pfad zu $wbx/daten
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*/
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protected String getWbxDataDir(ServletContext ctx) {
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return getFileBase(ctx).getAbsolutePath();
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}
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/**
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* Das Verzeichnis ermitteln, in dem die WebBox laeuft
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* @return der Ordner $wbx
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*/
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protected File getWbxDir(ServletContext ctx) {
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String path = ctx.getRealPath("/");
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logger.fine("getRealPath: " + path);
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File file = new File(path);
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file = file.getParentFile().getParentFile().getParentFile().getParentFile();
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logger.fine("WebBox: " + file.getAbsolutePath());
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return file;
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}
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/**
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* den Namen des angemeldeten Benutzers ermitteln
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* @return Name des angemeldeten Benutzers oder null, wenn keiner angemeldet ist
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*/
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protected String getUserName() {
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String userName = null;
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Object p = getRequest().getUserPrincipal();
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if(p instanceof Principal) {
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userName = ((Principal) p).getName();
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}
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return userName;
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}
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/* ------------- Implementierung WebKontext ------------- */
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@Override
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@Access(type = Access.Type.RESTRICT)
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public ServletContext getServletContext() {
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return ctx;
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}
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@Override
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@Access(type = Access.Type.RESTRICT)
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public void setServletContext(ServletContext servletContext) {
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this.ctx = servletContext;
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}
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/* ------------- Implementierung RequestKontext ------------- */
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@Override
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@Access(type = Access.Type.RESTRICT)
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public HttpServletRequest getRequest() {
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return request;
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}
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@Override
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@Access(type = Access.Type.RESTRICT)
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public void setRequest(HttpServletRequest r) {
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this.request = r;
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}
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}
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