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/*
 * Copyright 2011 gitblit.com.
 *
 * 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.gitblit.wicket;

import org.apache.wicket.Page;
import org.apache.wicket.request.target.coding.MixedParamUrlCodingStrategy;

import com.gitblit.GitBlit;
import com.gitblit.Keys;

/**
 * Simple subclass of mixed parameter url coding strategy that works around the
 * encoded forward-slash issue that is present in some servlet containers.
 * 
 * https://issues.apache.org/jira/browse/WICKET-1303
 * http://tomcat.apache.org/security-6.html
 * 
 * @author James Moger
 * 
 */
public class GitblitParamUrlCodingStrategy extends MixedParamUrlCodingStrategy {

	/**
	 * Construct.
	 * 
	 * @param <C>
	 * @param mountPath
	 *            mount path (not empty)
	 * @param bookmarkablePageClass
	 *            class of mounted page (not null)
	 * @param parameterNames
	 *            the parameter names (not null)
	 */
	public <C extends Page> GitblitParamUrlCodingStrategy(String mountPath,
			Class<C> bookmarkablePageClass, String[] parameterNames) {
		super(mountPath, bookmarkablePageClass, parameterNames);
	}

	/**
	 * Url encodes a string that is mean for a URL path (e.g., between slashes)
	 * 
	 * @param string
	 *            string to be encoded
	 * @return encoded string
	 */
	protected String urlEncodePathComponent(String string) {
		char altChar = GitBlit.getChar(Keys.web.forwardSlashCharacter, '/');
		if (altChar != '/') {
			string = string.replace('/', altChar);
		}
		return super.urlEncodePathComponent(string);
	}

	/**
	 * Returns a decoded value of the given value (taken from a URL path
	 * section)
	 * 
	 * @param value
	 * @return Decodes the value
	 */
	protected String urlDecodePathComponent(String value) {
		char altChar = GitBlit.getChar(Keys.web.forwardSlashCharacter, '/');
		if (altChar != '/') {
			value = value.replace(altChar, '/');
		}
		return super.urlDecodePathComponent(value);
	}
}