/*
* 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.catalina.util;
import jakarta.servlet.http.HttpServletRequest;
import org.apache.catalina.connector.Request;
/**
* General purpose request parsing and encoding utility methods.
*/
public final class RequestUtil {
/**
* Build an appropriate return value for {@link HttpServletRequest#getRequestURL()} based on the provided request
* object. Note that this will also work for instances of {@link jakarta.servlet.http.HttpServletRequestWrapper}.
*
* @param request The request object for which the URL should be built
*
* @return The request URL for the given request object
*/
public static StringBuffer getRequestURL(HttpServletRequest request) {
StringBuffer url = new StringBuffer();
String scheme = request.getScheme();
int port = request.getServerPort();
if (port < 0) {
// Work around java.net.URL bug
port = 80;
}
url.append(scheme);
url.append("://");
url.append(request.getServerName());
if ((scheme.equals("http") && (port != 80)) || (scheme.equals("https") && (port != 443))) {
url.append(':');
url.append(port);
}
url.append(request.getRequestURI());
return url;
}
/**
* Strip parameters for given path.
*
* @param input the input path
* @param request the request to add the parameters to
*
* @return the cleaned path
*/
public static String stripPathParams(String input, Request request) {
// Shortcut
if (input.indexOf(';') < 0) {
return input;
}
StringBuilder sb = new StringBuilder(input.length());
int pos = 0;
int limit = input.length();
while (pos < limit) {
int nextSemiColon = input.indexOf(';', pos);
if (nextSemiColon < 0) {
nextSemiColon = limit;
}
sb.append(input, pos, nextSemiColon);
int followingSlash = input.indexOf('/', nextSemiColon);
if (followingSlash < 0) {
pos = limit;
} else {
pos = followingSlash;
}
if (request != null && nextSemiColon + 1 < pos) {
String pathVariablesString = input.substring(nextSemiColon + 1, pos);
String[] pathVariables = pathVariablesString.split(";");
for (String pathVariable : pathVariables) {
int equals = pathVariable.indexOf('=');
if (equals > -1 && equals + 1 < pathVariable.length()) {
String name = pathVariable.substring(0, equals);
String value = pathVariable.substring(equals + 1);
request.addPathParameter(name, value);
}
}
}
}
return sb.toString();
}
}