/* Copyright (c) 2008 Google Inc.
*
* 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 sample.authsub.src;
import java.security.PrivateKey;
import java.util.HashMap;
import java.util.Map;
import javax.servlet.http.Cookie;
/**
* A class with a set of utility functions.
*
*
*/
public class Utility {
public static final String LOGIN_COOKIE_NAME = "AuthSubSampleCookie";
private static PrivateKey privateKey;
// Make class uninstantiable
private Utility() {
}
/**
* Retrieves the value of the cookie with the corresponding name.
*/
public static String getCookieValueWithName(Cookie[] cookies, String name) {
for (int cookie_i = 0; cookie_i < cookies.length; cookie_i++) {
if (cookies[cookie_i].getName().equals(name)) {
return cookies[cookie_i].getValue();
}
}
return null;
}
/**
* Parse a query string using the '&' character as the delimiter. Handles
* quoted values and is thus different than HttpUtils.parseQueryString.
*/
public static Map<String, String> parseQueryString(String queryString) {
StringBuilder query = new StringBuilder(queryString);
Map<String,String> hash = new HashMap<String,String>();
while (query.length() > 0) {
char c = query.charAt(0);
if (c == '&') {
query.deleteCharAt(0);
continue;
}
int equals = query.indexOf("=");
String key = query.substring(0, equals);
String value;
query.delete(0, equals + 1);
if (query.charAt(0) == '\"') {
int nextQuote = query.indexOf("\"", 1);
if (nextQuote == -1) {
// mismatched quotes -- try to be accommodating
value = query.toString();
query.delete(0, query.length());
} else {
value = query.substring(1, nextQuote);
query.delete(0, nextQuote + 1);
}
} else {
int ampIndex = query.indexOf("&");
if (ampIndex == -1) {
ampIndex = query.length();
}
value = query.substring(0, ampIndex);
query.delete(0, ampIndex);
}
hash.put(key, value);
}
return hash;
}
/**
* Return the private key to use to sign the AuthSub request.
*
* Note: Currently configured to use AuthSub without signatures. Uncomment
* the function below if AuthSub requests need to be signed.
*/
public static PrivateKey getPrivateKey() {
/**
* if (privateKey == null) {
* try {
* privateKey = AuthSubUtil.
* getPrivateKeyFromKeystore("/usr/etc/gdata_keys/AuthSub.jks",
* "passwd",
* "AuthSubAliasName",
* "passwd");
* } catch (Exception e) {
* throw new RuntimeException("Error reading from keystore file - ", e);
* }
* }
*/
return privateKey;
}
}