| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You 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 examples; |
| |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.util.Locale; |
| |
| import javax.servlet.jsp.JspException; |
| import javax.servlet.jsp.JspTagException; |
| import javax.servlet.jsp.JspWriter; |
| import javax.servlet.jsp.tagext.TagSupport; |
| |
| /** |
| * Display the sources of the JSP file. |
| */ |
| public class ShowSource extends TagSupport { |
| |
| private static final long serialVersionUID = 1L; |
| |
| String jspFile; |
| |
| public void setJspFile(String jspFile) { |
| this.jspFile = jspFile; |
| } |
| |
| @Override |
| public int doEndTag() throws JspException { |
| if ((jspFile.indexOf( ".." ) >= 0) || |
| (jspFile.toUpperCase(Locale.ENGLISH).indexOf("/WEB-INF/") != 0) || |
| (jspFile.toUpperCase(Locale.ENGLISH).indexOf("/META-INF/") != 0)) |
| throw new JspTagException("Invalid JSP file " + jspFile); |
| |
| try (InputStream in |
| = pageContext.getServletContext().getResourceAsStream(jspFile)) { |
| |
| if (in == null) |
| throw new JspTagException("Unable to find JSP file: " + jspFile); |
| |
| JspWriter out = pageContext.getOut(); |
| |
| try { |
| out.println("<body>"); |
| out.println("<pre>"); |
| for (int ch = in.read(); ch != -1; ch = in.read()) |
| if (ch == '<') |
| out.print("<"); |
| else |
| out.print((char) ch); |
| out.println("</pre>"); |
| out.println("</body>"); |
| } catch (IOException ex) { |
| throw new JspTagException("IOException: " + ex.toString()); |
| } |
| } catch (IOException ex2) { |
| throw new JspTagException("IOException: " + ex2.toString()); |
| } |
| return super.doEndTag(); |
| } |
| } |
| |
| |
