Java tutorial
/** * openkm, Open Document Management System (http://www.openkm.com) * Copyright (c) 2006-2013 Paco Avila & Josep Llort * * No bytes were intentionally harmed during the development of this application. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License along * with this program; if not, write to the Free Software Foundation, Inc., * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. */ package com.ikon.servlet.admin; import java.io.File; import java.io.IOException; import java.io.InputStream; import java.io.OutputStreamWriter; import java.io.PrintWriter; import java.sql.SQLException; import java.util.Iterator; import java.util.LinkedHashMap; import java.util.List; import java.util.Map; import java.util.Properties; import javax.servlet.ServletContext; import javax.servlet.ServletException; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import org.apache.commons.fileupload.FileItem; import org.apache.commons.fileupload.FileItemFactory; import org.apache.commons.fileupload.FileUploadException; import org.apache.commons.fileupload.disk.DiskFileItemFactory; import org.apache.commons.fileupload.servlet.ServletFileUpload; import org.apache.commons.io.IOUtils; import org.artofsolving.jodconverter.office.OfficeUtils; import org.hibernate.Session; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import com.google.gson.Gson; import com.ikon.bean.ConfigStoredOption; import com.ikon.bean.ConfigStoredSelect; import com.ikon.core.DatabaseException; import com.ikon.core.MimeTypeConfig; import com.ikon.dao.ConfigDAO; import com.ikon.dao.HibernateUtil; import com.ikon.dao.bean.Config; import com.ikon.servlet.admin.DatabaseQueryServlet.WorkerUpdate; import com.ikon.util.UserActivity; import com.ikon.util.WarUtils; import com.ikon.util.WebUtils; /** * Execute config servlet */ public class ConfigServlet extends BaseServlet { private static final long serialVersionUID = 1L; private static Logger log = LoggerFactory.getLogger(ConfigServlet.class); private static Map<String, String> types = new LinkedHashMap<String, String>(); private static final String[][] breadcrumb = new String[][] { new String[] { "Config", "Configuration" }, }; static { types.put(Config.STRING, "String"); types.put(Config.TEXT, "Text"); types.put(Config.BOOLEAN, "Boolean"); types.put(Config.INTEGER, "Integer"); types.put(Config.LONG, "Long"); types.put(Config.SELECT, "Select"); types.put(Config.LIST, "List"); } @Override public void service(HttpServletRequest request, HttpServletResponse response) throws IOException, ServletException { String method = request.getMethod(); if (method.equals(METHOD_GET)) { doGet(request, response); } else if (method.equals(METHOD_POST)) { doPost(request, response); } } @Override public void doGet(HttpServletRequest request, HttpServletResponse response) throws IOException, ServletException { log.debug("doGet({}, {})", request, response); request.setCharacterEncoding("UTF-8"); String action = WebUtils.getString(request, "action"); String filter = WebUtils.getString(request, "filter"); String userId = request.getRemoteUser(); updateSessionManager(request); try { if (action.equals("create")) { create(userId, types, request, response); } else if (action.equals("edit")) { edit(userId, types, request, response); } else if (action.equals("delete")) { delete(userId, types, request, response); } else if (action.equals("check")) { check(userId, request, response); } else if (action.equals("export")) { export(userId, request, response); } else { list(userId, filter, request, response); } } catch (DatabaseException e) { log.error(e.getMessage(), e); sendErrorRedirect(request, response, e); } } @Override @SuppressWarnings("unchecked") public void doPost(HttpServletRequest request, HttpServletResponse response) throws IOException, ServletException { log.debug("doPost({}, {})", request, response); request.setCharacterEncoding("UTF-8"); ServletContext sc = getServletContext(); String action = null; String filter = null; String userId = request.getRemoteUser(); Session dbSession = null; updateSessionManager(request); try { if (ServletFileUpload.isMultipartContent(request)) { InputStream is = null; FileItemFactory factory = new DiskFileItemFactory(); ServletFileUpload upload = new ServletFileUpload(factory); List<FileItem> items = upload.parseRequest(request); Config cfg = new Config(); byte data[] = null; for (Iterator<FileItem> it = items.iterator(); it.hasNext();) { FileItem item = it.next(); if (item.isFormField()) { if (item.getFieldName().equals("action")) { action = item.getString("UTF-8"); } else if (item.getFieldName().equals("filter")) { filter = item.getString("UTF-8"); } else if (item.getFieldName().equals("cfg_key")) { cfg.setKey(item.getString("UTF-8")); } else if (item.getFieldName().equals("cfg_type")) { cfg.setType(item.getString("UTF-8")); } else if (item.getFieldName().equals("cfg_value")) { cfg.setValue(item.getString("UTF-8").trim()); } } else { is = item.getInputStream(); data = IOUtils.toByteArray(is); is.close(); } } if (action.equals("create")) { if (Config.BOOLEAN.equals(cfg.getType())) { cfg.setValue(Boolean.toString(cfg.getValue() != null && !cfg.getValue().equals(""))); } else if (Config.SELECT.equals(cfg.getType())) { ConfigStoredSelect stSelect = ConfigDAO.getSelect(cfg.getKey()); if (stSelect != null) { for (ConfigStoredOption stOption : stSelect.getOptions()) { if (stOption.getValue().equals(cfg.getValue())) { stOption.setSelected(true); } } } cfg.setValue(new Gson().toJson(stSelect)); } ConfigDAO.create(cfg); com.ikon.core.Config.reload(sc, new Properties()); // Activity log UserActivity.log(userId, "ADMIN_CONFIG_CREATE", cfg.getKey(), null, cfg.toString()); list(userId, filter, request, response); } else if (action.equals("edit")) { if (Config.BOOLEAN.equals(cfg.getType())) { cfg.setValue(Boolean.toString(cfg.getValue() != null && !cfg.getValue().equals(""))); } else if (Config.SELECT.equals(cfg.getType())) { ConfigStoredSelect stSelect = ConfigDAO.getSelect(cfg.getKey()); if (stSelect != null) { for (ConfigStoredOption stOption : stSelect.getOptions()) { if (stOption.getValue().equals(cfg.getValue())) { stOption.setSelected(true); } else { stOption.setSelected(false); } } } cfg.setValue(new Gson().toJson(stSelect)); } ConfigDAO.update(cfg); com.ikon.core.Config.reload(sc, new Properties()); // Activity log UserActivity.log(userId, "ADMIN_CONFIG_EDIT", cfg.getKey(), null, cfg.toString()); list(userId, filter, request, response); } else if (action.equals("delete")) { ConfigDAO.delete(cfg.getKey()); com.ikon.core.Config.reload(sc, new Properties()); // Activity log UserActivity.log(userId, "ADMIN_CONFIG_DELETE", cfg.getKey(), null, null); list(userId, filter, request, response); } else if (action.equals("import")) { dbSession = HibernateUtil.getSessionFactory().openSession(); importConfig(userId, request, response, data, dbSession); // Activity log UserActivity.log(request.getRemoteUser(), "ADMIN_CONFIG_IMPORT", null, null, null); list(userId, filter, request, response); } } } catch (DatabaseException e) { log.error(e.getMessage(), e); sendErrorRedirect(request, response, e); } catch (FileUploadException e) { log.error(e.getMessage(), e); sendErrorRedirect(request, response, e); } catch (SQLException e) { log.error(e.getMessage(), e); sendErrorRedirect(request, response, e); } finally { HibernateUtil.close(dbSession); } } /** * Create config */ private void create(String userId, Map<String, String> types, HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException, DatabaseException { ServletContext sc = getServletContext(); Config cfg = new Config(); sc.setAttribute("action", WebUtils.getString(request, "action")); sc.setAttribute("filter", WebUtils.getString(request, "filter")); sc.setAttribute("persist", true); sc.setAttribute("types", types); sc.setAttribute("cfg", cfg); sc.getRequestDispatcher("/admin/config_edit.jsp").forward(request, response); } /** * Edit config */ private void edit(String userId, Map<String, String> types, HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException, DatabaseException { ServletContext sc = getServletContext(); String cfgKey = WebUtils.getString(request, "cfg_key"); Config cfg = ConfigDAO.findByPk(cfgKey); sc.setAttribute("action", WebUtils.getString(request, "action")); sc.setAttribute("filter", WebUtils.getString(request, "filter")); sc.setAttribute("persist", true); sc.setAttribute("types", types); sc.setAttribute("cfg", cfg); sc.getRequestDispatcher("/admin/config_edit.jsp").forward(request, response); } /** * Delete config */ private void delete(String userId, Map<String, String> types, HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException, DatabaseException { ServletContext sc = getServletContext(); String cfgKey = WebUtils.getString(request, "cfg_key"); Config cfg = ConfigDAO.findByPk(cfgKey); sc.setAttribute("action", WebUtils.getString(request, "action")); sc.setAttribute("filter", WebUtils.getString(request, "filter")); sc.setAttribute("persist", true); sc.setAttribute("types", types); sc.setAttribute("cfg", cfg); sc.getRequestDispatcher("/admin/config_edit.jsp").forward(request, response); } /** * List config */ private void list(String userId, String filter, HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException, DatabaseException { log.debug("list({}, {}, {}, {})", new Object[] { userId, filter, request, response }); ServletContext sc = getServletContext(); List<Config> list = ConfigDAO.findAll(); for (Iterator<Config> it = list.iterator(); it.hasNext();) { Config cfg = it.next(); if (Config.STRING.equals(cfg.getType())) { cfg.setType("String"); } else if (Config.TEXT.equals(cfg.getType())) { cfg.setType("Text"); } else if (Config.BOOLEAN.equals(cfg.getType())) { cfg.setType("Boolean"); } else if (Config.INTEGER.equals(cfg.getType())) { cfg.setType("Integer"); } else if (Config.LONG.equals(cfg.getType())) { cfg.setType("Long"); } else if (Config.LIST.equals(cfg.getType())) { cfg.setType("List"); } else if (Config.SELECT.equals(cfg.getType())) { cfg.setType("Select"); ConfigStoredSelect stSelect = new Gson().fromJson(cfg.getValue(), ConfigStoredSelect.class); for (ConfigStoredOption stOption : stSelect.getOptions()) { if (stOption.isSelected()) { cfg.setValue(stOption.getValue()); } } } else if (Config.HIDDEN.equals(cfg.getType())) { it.remove(); } if (!Config.HIDDEN.equals(cfg.getType()) && !cfg.getKey().contains(filter)) { it.remove(); } } sc.setAttribute("configs", list); sc.setAttribute("filter", filter); sc.getRequestDispatcher("/admin/config_list.jsp").forward(request, response); log.debug("list: void"); } /** * Check configuration */ private void check(String userId, HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException, DatabaseException { log.debug("check({}, {}, {})", new Object[] { userId, request, response }); PrintWriter out = response.getWriter(); response.setContentType(MimeTypeConfig.MIME_HTML); header(out, "Configuration check", breadcrumb); out.flush(); try { out.println("<ul>"); out.print("<li>"); out.print("<b>" + com.ikon.core.Config.PROPERTY_SYSTEM_SWFTOOLS_PDF2SWF + "</b>"); checkExecutable(out, com.ikon.core.Config.SYSTEM_SWFTOOLS_PDF2SWF); out.print("</li>"); out.print("<li>"); out.print("<b>" + com.ikon.core.Config.PROPERTY_SYSTEM_IMAGEMAGICK_CONVERT + "</b>"); checkExecutable(out, com.ikon.core.Config.SYSTEM_IMAGEMAGICK_CONVERT); out.print("</li>"); out.print("<li>"); out.print("<b>" + com.ikon.core.Config.PROPERTY_SYSTEM_OCR + "</b>"); checkExecutable(out, com.ikon.core.Config.SYSTEM_OCR); out.print("</li>"); out.print("<li>"); out.print("<b>" + com.ikon.core.Config.PROPERTY_SYSTEM_OPENOFFICE_PATH + "</b>"); checkOpenOffice(out, com.ikon.core.Config.SYSTEM_OPENOFFICE_PATH); out.print("</li>"); out.println("</ul>"); out.flush(); } catch (Exception e) { out.println("<div class=\"warn\">Exception: " + e.getMessage() + "</div>"); out.flush(); } finally { footer(out); out.flush(); out.close(); } log.debug("check: void"); } /** * File existence and if can be executed */ private void checkExecutable(PrintWriter out, String cmd) { if (cmd.equals("")) { warn(out, "Not configured"); } else { int idx = cmd.indexOf(" "); String exec = null; if (idx > -1) { exec = cmd.substring(0, idx); } else { exec = cmd; } File prg = new File(exec); if (prg.exists() && prg.canRead() && prg.canExecute()) { ok(out, "OK - " + prg.getPath()); } else { warn(out, "Can't read or execute: " + prg.getPath()); } } } /** * File existence and if can be executed */ private void checkOpenOffice(PrintWriter out, String path) { if (path.equals("")) { warn(out, "Not configured"); } else { File prg = new File(path); if (prg.exists() && prg.canRead()) { File offExec = OfficeUtils.getOfficeExecutable(prg); if (offExec.exists() && offExec.canRead() && offExec.canExecute()) { ok(out, "OK - " + offExec.getPath()); } else { warn(out, "Can't read or execute: " + offExec.getPath()); } } else { warn(out, "Can't read: " + prg.getPath()); } } } /** * Export configuration */ private void export(String userId, HttpServletRequest request, HttpServletResponse response) throws DatabaseException, IOException { log.debug("export({}, {}, {})", new Object[] { userId, request, response }); // Disable browser cache response.setHeader("Expires", "Sat, 6 May 1971 12:00:00 GMT"); response.setHeader("Cache-Control", "max-age=0, must-revalidate"); response.addHeader("Cache-Control", "post-check=0, pre-check=0"); String fileName = "ikon_" + WarUtils.getAppVersion().getVersion() + "_cfg.sql"; response.setHeader("Content-disposition", "inline; filename=\"" + fileName + "\""); response.setContentType("text/x-sql; charset=UTF-8"); PrintWriter out = new PrintWriter(new OutputStreamWriter(response.getOutputStream(), "UTF8"), true); for (Config cfg : ConfigDAO.findAll()) { if (!Config.HIDDEN.equals(cfg.getType())) { out.println("DELETE FROM ikon_CONFIG WHERE CFG_KEY='" + cfg.getKey() + "';"); } } for (Config cfg : ConfigDAO.findAll()) { if (!Config.HIDDEN.equals(cfg.getType())) { StringBuffer insertCfg = new StringBuffer( "INSERT INTO ikon_CONFIG (CFG_KEY, CFG_TYPE, CFG_VALUE) VALUES ('"); insertCfg.append(cfg.getKey()).append("', '"); insertCfg.append(cfg.getType()).append("', '"); if (cfg.getValue() == null || cfg.getValue().equals("null")) { insertCfg.append("").append("');"); } else { insertCfg.append(cfg.getValue()).append("');"); } out.println(insertCfg); } } out.flush(); log.debug("export: void"); } /** * Import configuration into database */ private void importConfig(String userId, HttpServletRequest request, HttpServletResponse response, final byte[] data, Session dbSession) throws DatabaseException, IOException, SQLException { log.debug("importConfig({}, {}, {}, {}, {})", new Object[] { userId, request, response, data, dbSession }); WorkerUpdate worker = new DatabaseQueryServlet().new WorkerUpdate(); worker.setData(data); dbSession.doWork(worker); log.debug("importConfig: void"); } }