/*******************************************************************************
    * Copyright (c) 2007, 2014 Massimiliano Ziccardi
    *
    * Licensed under the Apache License, Version 2.0 (the "License");
    * you may not use this file except in compliance with the License.
    * You may obtain a copy of the License at
    *
    *     http://www.apache.org/licenses/LICENSE-2.0
    *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   *******************************************************************************/
  package it.jnrpe.server;
  
  import it.jnrpe.utils.StringUtils;
  
  import java.io.File;
  import java.util.Iterator;
  import java.util.List;
  
  import org.apache.commons.configuration.HierarchicalINIConfiguration;
  import org.apache.commons.configuration.SubnodeConfiguration;
  
  /**
   * This class represent an INI file configuration.
   * 
   * @author Massimiliano Ziccardi
   */
  class IniJNRPEConfiguration extends JNRPEConfiguration {
  
  	@Override
  	public void load(final File confFile) throws ConfigurationException {
  		// Parse an ini file
  		ServerSection serverConf = getServerSection();
  		CommandsSection commandSection = getCommandSection();
  		try {
  			HierarchicalINIConfiguration confParser = new HierarchicalINIConfiguration(
  					confFile);
  
  			List<Object> vBindAddresses = confParser
  					.getList("server.bind-address");
  			if (vBindAddresses != null) {
  				for (Object address : vBindAddresses) {
  					serverConf.addBindAddress((String) address);
  				}
  			}
  
  			// Defaults accept params
  			String sAcceptParams = confParser.getString("server.accept-params",
  					"true");
  			serverConf.setAcceptParams(sAcceptParams.equalsIgnoreCase("true")
  					|| sAcceptParams.equalsIgnoreCase("yes"));
  			serverConf.setPluginPath(confParser.getString("server.plugin-path",
  					"."));
  
  			serverConf.setBackLogSize(confParser.getInt("server.backlog-size",
  					ServerSection.DEFAULT_BACKLOG));
  
  			// TODO : move this to publicly accessible constants
  			serverConf.setReadTimeout(confParser.getInteger(
  					"server.read-timeout", 10));
  			// TODO : move this to publicly accessible constants
  			serverConf.setWriteTimeout(confParser.getInteger(
  					"server.write-timeout", 60));
  
  			List<Object> vAllowedAddresses = confParser
  					.getList("server.allow-address");
  			if (vAllowedAddresses != null) {
  				for (Object address : vAllowedAddresses) {
  					serverConf.addAllowedAddress((String) address);
  				}
  			}
  
  			SubnodeConfiguration sc = confParser.getSection("commands");
  
  			if (sc != null) {
  				for (Iterator<String> it = sc.getKeys(); it.hasNext();) {
  					String sCommandName = it.next();
  
  					String sCommandLine = org.apache.commons.lang.StringUtils
  							.join(sc.getStringArray(sCommandName), ",");
  					// first element of the command line is the plugin name
  
  					String[] vElements = StringUtils.split(sCommandLine, false);
  					String sPluginName = vElements[0];
  
  					// Rebuilding the commandline
  					StringBuffer cmdLine = new StringBuffer();
  
  					for (int i = 1; i < vElements.length; i++) {
  						cmdLine.append(quoteAndEscape(vElements[i]))
  								.append(" ");
  					}
  
  					commandSection.addCommand(sCommandName, sPluginName,
  							cmdLine.toString());
 				}
 			}
 		} catch (org.apache.commons.configuration.ConfigurationException e) {
 			throw new ConfigurationException(e);
 		}
 
 	}
 
 	/**
 	 * Quotes a string.
 	 * 
 	 * @param string
 	 *            The string to be quoted
 	 * @return The quoted string
 	 */
 	private String quoteAndEscape(final String string) {
 		if (string.indexOf(' ') == -1) {
 			return string;
 		}
 
 		String res = "\"" + string.replaceAll("\"", "\\\"") + "\"";
 		return res;
 	}
 
 }