/*
* Copyright 2002-2012 the original author or authors.
*
* 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 org.springframework.security.config.http;
import org.springframework.beans.factory.xml.ParserContext;
import org.springframework.security.web.util.UrlUtils;
import org.springframework.util.StringUtils;
/**
* Utility methods used internally by the Spring Security http namespace configuration
* code.
*
* @author Luke Taylor
* @author Ben Alex
*/
abstract class WebConfigUtils {
public static int countNonEmpty(String[] objects) {
int nonNulls = 0;
for (String object : objects) {
if (StringUtils.hasText(object)) {
nonNulls++;
}
}
return nonNulls;
}
/**
* Checks the value of an XML attribute which represents a redirect URL. If not empty
* or starting with "$" (potential placeholder), or starting with "#" (potential
* SpEL), "/" or "http" it will raise an error.
*/
static void validateHttpRedirect(String url, ParserContext pc, Object source) {
if (!StringUtils.hasText(url) || UrlUtils.isValidRedirectUrl(url)
|| url.startsWith("$") || url.startsWith("#")) {
return;
}
pc.getReaderContext().warning(
url + " is not a valid redirect URL (must start with '/' or http(s))",
source);
}
}