| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You 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 org.apache.logging.log4j.web; |
| // Please note that if you move this class, make sure to update the Interpolator class (if still applicable) or remove |
| // this comment if no longer relevant |
| |
| import java.security.Principal; |
| import java.util.Objects; |
| import java.util.stream.Stream; |
| |
| import javax.servlet.ServletContext; |
| import javax.servlet.ServletRequest; |
| import javax.servlet.http.Cookie; |
| import javax.servlet.http.HttpServletRequest; |
| import javax.servlet.http.HttpSession; |
| |
| import org.apache.logging.log4j.core.LogEvent; |
| import org.apache.logging.log4j.plugins.Plugin; |
| import org.apache.logging.log4j.core.lookup.AbstractLookup; |
| import org.apache.logging.log4j.util.Strings; |
| |
| @Plugin(name = "web", category = "Lookup") |
| public class WebLookup extends AbstractLookup { |
| private static final String SESSION_ATTR_PREFIX = "session.attr."; |
| private static final String REQUEST_ATTR_PREFIX = "request.attr."; |
| private static final String REQUEST_HEADER_PREFIX = "header."; |
| private static final String REQUEST_COOKIE_PREFIX = "cookie."; |
| private static final String REQUEST_PARAMETER_PREFIX = "request.parameter."; |
| private static final String ATTR_PREFIX = "attr."; |
| private static final String INIT_PARAM_PREFIX = "initParam."; |
| |
| @Override |
| public String lookup(final LogEvent event, final String key) { |
| final ServletContext ctx = WebLoggerContextUtils.getServletContext(); |
| if (ctx == null) { |
| return null; |
| } |
| |
| if (key.startsWith(ATTR_PREFIX)) { |
| final String attrName = key.substring(ATTR_PREFIX.length()); |
| final Object attrValue = ctx.getAttribute(attrName); |
| return attrValue == null ? null : attrValue.toString(); |
| } |
| |
| if (key.startsWith(INIT_PARAM_PREFIX)) { |
| final String paramName = key.substring(INIT_PARAM_PREFIX.length()); |
| return ctx.getInitParameter(paramName); |
| } |
| |
| if (key.startsWith(REQUEST_ATTR_PREFIX)) { |
| final String name = key.substring(REQUEST_ATTR_PREFIX.length()); |
| final ServletRequest req = getRequest(); |
| final Object value = req == null ? null : req.getAttribute(name); |
| return value == null ? null : String.valueOf(value); |
| } |
| |
| if (key.startsWith(REQUEST_HEADER_PREFIX)) { |
| final String name = key.substring(REQUEST_HEADER_PREFIX.length()); |
| final ServletRequest req = getRequest(); |
| return HttpServletRequest.class.isInstance(req) ? HttpServletRequest.class.cast(req).getHeader(name) : null; |
| } |
| |
| if (key.startsWith(REQUEST_COOKIE_PREFIX)) { |
| final String name = key.substring(REQUEST_COOKIE_PREFIX.length()); |
| final ServletRequest req = getRequest(); |
| return HttpServletRequest.class.isInstance(req) ? |
| Stream.of(HttpServletRequest.class.cast(req).getCookies()) |
| .filter(c -> name.equals(c.getName())) |
| .findFirst() |
| .map(Cookie::getValue) |
| .orElse(null) : |
| null; |
| } |
| |
| if (key.startsWith(REQUEST_PARAMETER_PREFIX)) { |
| final String name = key.substring(REQUEST_PARAMETER_PREFIX.length()); |
| final ServletRequest req = getRequest(); |
| return HttpServletRequest.class.isInstance(req) ? |
| HttpServletRequest.class.cast(req).getParameter(name) : null; |
| } |
| |
| if (key.startsWith(SESSION_ATTR_PREFIX)) { |
| final ServletRequest req = getRequest(); |
| if (HttpServletRequest.class.isInstance(req)) { |
| final HttpSession session = HttpServletRequest.class.cast(req).getSession(false); |
| if (session != null) { |
| final String name = key.substring(SESSION_ATTR_PREFIX.length()); |
| return Objects.toString(session.getAttribute(name), null); |
| } |
| } |
| return null; |
| } |
| |
| if ("request.method".equals(key)) { |
| final ServletRequest req = getRequest(); |
| return HttpServletRequest.class.isInstance(req) ? HttpServletRequest.class.cast(req).getMethod() : null; |
| } |
| |
| if ("request.uri".equals(key)) { |
| final ServletRequest req = getRequest(); |
| return HttpServletRequest.class.isInstance(req) ? HttpServletRequest.class.cast(req).getRequestURI() : null; |
| } |
| |
| if ("request.url".equals(key)) { |
| final ServletRequest req = getRequest(); |
| return HttpServletRequest.class.isInstance(req) ? |
| HttpServletRequest.class.cast(req).getRequestURL().toString() : null; |
| } |
| |
| if ("request.remoteAddress".equals(key)) { |
| final ServletRequest req = getRequest(); |
| return HttpServletRequest.class.isInstance(req) ? |
| HttpServletRequest.class.cast(req).getRemoteAddr() : null; |
| } |
| |
| if ("request.remoteHost".equals(key)) { |
| final ServletRequest req = getRequest(); |
| return HttpServletRequest.class.isInstance(req) ? |
| HttpServletRequest.class.cast(req).getRemoteHost() : null; |
| } |
| |
| if ("request.remotePort".equals(key)) { |
| final ServletRequest req = getRequest(); |
| return HttpServletRequest.class.isInstance(req) ? |
| Integer.toString(HttpServletRequest.class.cast(req).getRemotePort()) : null; |
| } |
| |
| if ("request.principal".equals(key)) { |
| final ServletRequest req = getRequest(); |
| final Principal pcp = HttpServletRequest.class.isInstance(req) ? |
| HttpServletRequest.class.cast(req).getUserPrincipal() : null; |
| return pcp == null ? null : pcp.getName(); |
| } |
| |
| if ("session.id".equals(key)) { |
| final ServletRequest req = getRequest(); |
| final HttpSession session = HttpServletRequest.class.isInstance(req) ? |
| HttpServletRequest.class.cast(req).getSession(false) : null; |
| return session == null ? null : session.getId(); |
| } |
| |
| if ("rootDir".equals(key)) { |
| final String root = ctx.getRealPath("/"); |
| if (root == null) { |
| final String msg = "Failed to resolve web:rootDir -- " + |
| "servlet container unable to translate virtual path " + |
| " to real path (probably not deployed as exploded"; |
| throw new IllegalStateException(msg); |
| } |
| return root; |
| } |
| |
| if ("contextPathName".equals(key)) { |
| String path = ctx.getContextPath(); |
| if (path.trim().contains("/")) { |
| String[] fields = path.split("/"); |
| for (String field : fields) { |
| if (field.length() > 0) { |
| return field; |
| } |
| } |
| return null; |
| |
| } |
| return ctx.getContextPath(); |
| } |
| |
| if ("contextPath".equals(key)) { |
| return ctx.getContextPath(); |
| } |
| |
| if ("servletContextName".equals(key)) { |
| return ctx.getServletContextName(); |
| } |
| |
| if ("serverInfo".equals(key)) { |
| return ctx.getServerInfo(); |
| } |
| |
| if ("effectiveMajorVersion".equals(key)) { |
| return String.valueOf(ctx.getEffectiveMajorVersion()); |
| } |
| |
| if ("effectiveMinorVersion".equals(key)) { |
| return String.valueOf(ctx.getEffectiveMinorVersion()); |
| } |
| |
| if ("majorVersion".equals(key)) { |
| return String.valueOf(ctx.getMajorVersion()); |
| } |
| |
| if ("minorVersion".equals(key)) { |
| return String.valueOf(ctx.getMinorVersion()); |
| } |
| |
| if (ctx.getAttribute(key) != null) { |
| return ctx.getAttribute(key).toString(); |
| } |
| |
| if (ctx.getInitParameter(key) != null) { |
| return ctx.getInitParameter(key); |
| } |
| |
| ctx.log(getClass().getName() + " unable to resolve key " + Strings.quote(key)); |
| return null; |
| } |
| |
| private ServletRequest getRequest() { |
| final ServletRequest servletRequest = Log4jServletFilter.CURRENT_REQUEST.get(); |
| if (servletRequest == null) { // don't leak the thread map |
| Log4jServletFilter.CURRENT_REQUEST.remove(); |
| } |
| return servletRequest; |
| } |
| } |