/*
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* Copyright 2011 gitblit.com.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.gitblit;
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import java.io.File;
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import java.io.FileInputStream;
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import java.io.FileOutputStream;
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import java.io.InputStream;
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import java.io.OutputStream;
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import java.text.MessageFormat;
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import java.util.Enumeration;
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import java.util.Map;
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import java.util.Properties;
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import javax.servlet.ServletContext;
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import com.gitblit.utils.StringUtils;
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/**
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* Loads Gitblit settings from the context-parameter values of a web.xml file.
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*
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* @author James Moger
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*
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*/
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public class WebXmlSettings extends IStoredSettings {
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private final Properties properties = new Properties();
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private File overrideFile;
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public WebXmlSettings(ServletContext context) {
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super(WebXmlSettings.class);
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Enumeration<?> keys = context.getInitParameterNames();
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while (keys.hasMoreElements()) {
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String key = keys.nextElement().toString();
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String value = context.getInitParameter(key);
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properties.put(key, decodeValue(value));
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logger.debug(key + "=" + properties.getProperty(key));
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}
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}
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public void applyOverrides(File overrideFile) {
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this.overrideFile = overrideFile;
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// apply any web-configured overrides
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if (overrideFile.exists()) {
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try {
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InputStream is = new FileInputStream(overrideFile);
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properties.load(is);
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is.close();
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} catch (Throwable t) {
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logger.error(
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MessageFormat.format("Failed to apply {0} setting overrides",
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overrideFile.getAbsolutePath()), t);
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}
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}
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}
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private String decodeValue(String value) {
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// decode escaped backslashes and HTML entities
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return StringUtils.decodeFromHtml(value).replace("\\\\", "\\");
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}
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@Override
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protected Properties read() {
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return properties;
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}
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@Override
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public synchronized boolean saveSettings(Map<String, String> settings) {
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try {
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Properties props = new Properties();
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// load pre-existing web-configuration
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if (overrideFile.exists()) {
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InputStream is = new FileInputStream(overrideFile);
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props.load(is);
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is.close();
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}
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// put all new settings and persist
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props.putAll(settings);
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OutputStream os = new FileOutputStream(overrideFile);
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props.store(os, null);
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os.close();
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// override current runtime settings
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properties.putAll(settings);
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return true;
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} catch (Throwable t) {
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logger.error("Failed to save settings!", t);
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}
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return false;
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}
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@Override
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public String toString() {
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return "WEB.XML";
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}
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}
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