/*
* © Copyright IBM Corp. 2012
*
* 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 com.ibm.commons.runtime.util;
import java.util.Map;
import java.util.TreeMap;
import javax.servlet.http.HttpServletRequest;
import com.ibm.commons.util.PathUtil;
import com.ibm.commons.util.StringUtil;
/**
* URL Utilities.
*
* @author Philippe Riand
*/
public class UrlUtil {
public static final int URL_SERVER = 0;
public static final int URL_CONTEXTPATH = 1;
public static final int URL_SERVLETPATH = 2;
public static final int URL_PATHINFO = 3;
public static final int URL_QUERYSTRING = 4;
public static String getRequestUrl(HttpServletRequest req) {
return getRequestUrl(req, true);
}
public static String getRequestUrl(HttpServletRequest req, boolean querystring) {
return getRequestUrl(req, URL_QUERYSTRING);
}
public static String getRequestUrl(HttpServletRequest req, int url) {
// We cannot use request.getRequestURL() as this uses requestURI() which does not
// include the full path after a Domino redirection (mydb.nsf/).
// We have to recompose it entirely here
StringBuilder b = new StringBuilder();
String scheme = req.getScheme();
b.append(scheme);
b.append("://");
b.append(req.getServerName());
if (scheme.equals("http") && req.getServerPort() != 80) { // $NON-NLS-1$
b.append(":");
b.append(req.getServerPort());
}
if (scheme.equals("https") && req.getServerPort() != 443) { // $NON-NLS-1$
b.append(":");
b.append(req.getServerPort());
}
if (url >= URL_CONTEXTPATH) {
String contextPath = req.getContextPath();
if (StringUtil.isNotEmpty(contextPath)) {
b.append(contextPath);
}
if (url >= URL_SERVLETPATH) {
String servletPath = req.getServletPath();
if (StringUtil.isNotEmpty(servletPath)) {
b.append(servletPath);
}
if (url >= URL_PATHINFO) {
String pathInfo = req.getPathInfo();
if (StringUtil.isNotEmpty(pathInfo)) {
b.append(pathInfo);
}
if (url >= URL_QUERYSTRING) {
String qs = req.getQueryString();
if (StringUtil.isNotEmpty(qs)) {
b.append("?");
b.append(qs);
}
}
}
}
}
return b.toString();
}
/**
* getParamsMap
* <p>
* Method to obtain a map of parameters from the request Uri containing query string parameters added to
* it.
*
* @param requestUriWithQueryParams
* - input is the request Uri containing the parameters added to it as Query String parameters.
* @return - Map of parameters, extracted from the Uri
*/
public static Map<String, String> getParamsMap(String requestUriWithQueryParams) {
Map<String, String> mapOfParams = new TreeMap<String, String>();
if (requestUriWithQueryParams.contains("?")) {
// if parameters are a part of the request uri
String queryStr = requestUriWithQueryParams.substring(requestUriWithQueryParams.indexOf("?") + 1,
requestUriWithQueryParams.length());
requestUriWithQueryParams = requestUriWithQueryParams.substring(0,
requestUriWithQueryParams.indexOf("?"));
String[] paramsList = queryStr.split("&");
for (String i : paramsList) {
String[] parameter = i.split("=");
mapOfParams.put(parameter[0], parameter[1]);
}
}
return mapOfParams;
}
public static String getBaseUrl(HttpServletRequest req) {
StringBuilder b = new StringBuilder(64);
return appendBaseUrl(b, req).toString();
}
public static StringBuilder appendBaseUrl(StringBuilder b, HttpServletRequest req) {
appendServerUrl(b, req);
String contextPath = req.getContextPath();
b.append(contextPath);
return b;
}
public static String getServerUrl(HttpServletRequest req) {
StringBuilder b = new StringBuilder(64);
return appendServerUrl(b, req).toString();
}
public static StringBuilder appendServerUrl(StringBuilder b, HttpServletRequest req) {
String scheme = req.getScheme();
String server = req.getServerName();
int port = req.getServerPort();
b.append(scheme);
b.append("://");
b.append(server);
if (!((scheme.equals("http") && port == 80) || (scheme.equals("https") && port == 443))) {
b.append(":");
b.append(Integer.toString(port));
}
return b;
}
public static String getContextUrl(HttpServletRequest req) {
String serverUrl = getServerUrl(req);
return PathUtil.concat(serverUrl, req.getContextPath(), '/');
}
public static String makeUrlAbsolute(HttpServletRequest request, String path) {
if (path.indexOf("://") < 0) {
// Put that in a utility!
StringBuilder b = new StringBuilder();
String scheme = request.getScheme();
b.append(scheme);
b.append("://");
b.append(request.getServerName());
if (scheme.equals("http") && request.getServerPort() != 80) { //$NON-NLS-1$
b.append(":");
b.append(request.getServerPort());
}
if (scheme.equals("https") && request.getServerPort() != 443) { //$NON-NLS-1$
b.append(":");
b.append(request.getServerPort());
}
if (!path.startsWith("/")) {
b.append("/");
}
b.append(path);
return b.toString();
}
return path;
}
/**
* The following are examples of absolute URLs:
* <UL>
* <LI>http://host:80/path</LI>
* <LI>ftp://user:pw@host:port/path</LI>
* <LI>news:a.news.group</LI>
* <LI>file:/c:/config.sys</LI>
* <LI>mailto:alasdair@domain.tld</LI>
* </UL>
* This method does not provide a comprehensive test for all URL cases, but should suffice for most.
*
* @param url
* the non-null URL to test
* @return true if the pattern matches that of an absolute URL
*/
public static boolean isAbsoluteUrl(String url) {
// see here for more: http://www.w3.org/Addressing/URL/url-spec.txt
// most URLs will be relative
int colon = url.indexOf(':');
if (colon < 0) {
return false;
}
// assume the protocol is a simple alphanumeric String
for (int i = 0; i < colon; i++) {
char ch = url.charAt(i);
if (Character.isLetterOrDigit(ch)) {
continue;
} else {
return false;
}
}
return true;
}
}