| Line | Hits | Source |
|---|---|---|
| 1 | /* | |
| 2 | Chrysalis Web Framework [http://chrysalis.sourceforge.net] | |
| 3 | Copyright (c) 2002, 2003, 2004, Paul Strack | |
| 4 | ||
| 5 | All rights reserved. | |
| 6 | ||
| 7 | Redistribution and use in source and binary forms, with or without | |
| 8 | modification, are permitted provided that the following conditions are met: | |
| 9 | ||
| 10 | 1. Redistributions of source code must retain the above copyright notice, this | |
| 11 | list of conditions and the following disclaimer. | |
| 12 | ||
| 13 | 2. Redistributions in binary form must reproduce the above copyright notice, | |
| 14 | this list of conditions and the following disclaimer in the documentation | |
| 15 | and/or other materials provided with the distribution. | |
| 16 | ||
| 17 | 3. Neither the name of the copyright holder nor the names of its contributors | |
| 18 | may be used to endorse or promote products derived from this software without | |
| 19 | specific prior written permission. | |
| 20 | ||
| 21 | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND | |
| 22 | ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED | |
| 23 | WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE | |
| 24 | DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR | |
| 25 | ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES | |
| 26 | (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; | |
| 27 | LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON | |
| 28 | ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
| 29 | (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS | |
| 30 | SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
| 31 | */ | |
| 32 | ||
| 33 | package org.chwf.servlet.engine; | |
| 34 | ||
| 35 | import java.io.IOException; | |
| 36 | ||
| 37 | import javax.servlet.FilterChain; | |
| 38 | import javax.servlet.ServletException; | |
| 39 | import javax.servlet.http.HttpServletRequest; | |
| 40 | import javax.servlet.http.HttpServletResponse; | |
| 41 | ||
| 42 | import org.chwf.plugin.Logger; | |
| 43 | import org.chwf.servlet.Controller; | |
| 44 | import org.chwf.servlet.InvocationContext; | |
| 45 | import org.chwf.servlet.ServletData; | |
| 46 | import org.chwf.servlet.ServletUtils; | |
| 47 | import org.chwf.servlet.filter.FilterSupport; | |
| 48 | ||
| 49 | /** | |
| 50 | * A filter that performs redirect operations to the view or error page, | |
| 51 | * based on the information in the InvocationContext. | |
| 52 | * | |
| 53 | * @author <a href="mailto:pfstrack@users.sourceforge.net">Paul Strack</a> | |
| 54 | */ | |
| 55 | 12 | public class RedirectFilter extends FilterSupport { |
| 56 | ||
| 57 | /** HTTP header for referer page. */ | |
| 58 | private static final String REFERER_HEADER = "referer"; | |
| 59 | ||
| 60 | /** | |
| 61 | * Process filter. | |
| 62 | * | |
| 63 | * @param request The request. | |
| 64 | * @param response The response. | |
| 65 | * @param chain The filter chain. | |
| 66 | * @throws ServletException For servlet exceptions. | |
| 67 | * @throws IOException For IO exceptions. | |
| 68 | */ | |
| 69 | public void doHttpFilter( | |
| 70 | HttpServletRequest request, | |
| 71 | HttpServletResponse response, | |
| 72 | FilterChain chain) | |
| 73 | throws IOException, ServletException { | |
| 74 | ||
| 75 | 7 | chain.doFilter(request, response); |
| 76 | 6 | InvocationContext context = InvokerFilter.getContext(request); |
| 77 | 6 | if (context.hasError()) { |
| 78 | 2 | handleError(context, request); |
| 79 | } else { | |
| 80 | 4 | String url = context.getRedirectURL(); |
| 81 | 4 | redirect(request, response, url); |
| 82 | } | |
| 83 | 6 | } |
| 84 | ||
| 85 | /** | |
| 86 | * Redirect to given URL. | |
| 87 | * | |
| 88 | * @param request The request. | |
| 89 | * @param response The response. | |
| 90 | * @param url URL | |
| 91 | * @throws IOException For I/O errors. | |
| 92 | */ | |
| 93 | public static void redirect( | |
| 94 | HttpServletRequest request, | |
| 95 | HttpServletResponse response, | |
| 96 | String url) | |
| 97 | throws IOException { | |
| 98 | ||
| 99 | 5 | if ((url.charAt(0) == '/') && URIMapper.PREPEND_CONTEXT) { |
| 100 | 4 | url = request.getContextPath() + url; |
| 101 | } | |
| 102 | 5 | response.sendRedirect(response.encodeRedirectURL(url.toString())); |
| 103 | 5 | } |
| 104 | ||
| 105 | /** | |
| 106 | * Handle error message. | |
| 107 | * | |
| 108 | * @param context The invocation context | |
| 109 | * @param request The request | |
| 110 | * @throws IOException For IO errors | |
| 111 | * @throws ServletException For servlet errors | |
| 112 | */ | |
| 113 | private static void handleError( | |
| 114 | InvocationContext context, | |
| 115 | HttpServletRequest request) | |
| 116 | throws IOException, ServletException { | |
| 117 | ||
| 118 | 2 | String errorPage = context.getErrorPage(); |
| 119 | 2 | Throwable error = context.getError(); |
| 120 | 2 | Logger.getInstance().log(CommandFilter.class, error.getMessage(), error); |
| 121 | 2 | if (errorPage.equals(Controller.REFERER_PAGE)) { |
| 122 | 1 | String referer = request.getHeader(REFERER_HEADER); |
| 123 | 1 | ServletData.redirectError(referer, error); |
| 124 | 1 | ServletUtils.cacheError(request, error); |
| 125 | } else { | |
| 126 | 1 | ServletData.forwardError(errorPage, error); |
| 127 | } | |
| 128 | 2 | } |
| 129 | } |
|
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