rogerrut 2005/03/21 09:31:11
Modified: portals-bridges/perl/src/java/org/apache/portals/bridges/perl
PerlPortlet.java
Added: portals-bridges/perl/src/java/org/apache/portals/bridges/perl
PerlContentRewriter.java
Log:
Use rewriter component instead of ScriptPostProcess class.
Revision Changes Path
1.7 +144 -13
jakarta-jetspeed-2/portals-bridges/perl/src/java/org/apache/portals/bridges/perl/PerlPortlet.java
Index: PerlPortlet.java
===================================================================
RCS file:
/home/cvs/jakarta-jetspeed-2/portals-bridges/perl/src/java/org/apache/portals/bridges/perl/PerlPortlet.java,v
retrieving revision 1.6
retrieving revision 1.7
diff -u -r1.6 -r1.7
--- PerlPortlet.java 27 Feb 2005 21:59:28 -0000 1.6
+++ PerlPortlet.java 21 Mar 2005 17:31:11 -0000 1.7
@@ -18,12 +18,20 @@
import javax.portlet.GenericPortlet;
import java.io.BufferedReader;
+import java.io.ByteArrayInputStream;
+import java.io.ByteArrayOutputStream;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
+import java.io.OutputStream;
+import java.io.OutputStreamWriter;
import java.io.PrintWriter;
+import java.io.StringReader;
+import java.io.UnsupportedEncodingException;
+import java.io.Writer;
+import java.util.Arrays;
import java.util.Enumeration;
import javax.servlet.http.HttpServletRequestWrapper;
@@ -44,11 +52,22 @@
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
-import org.apache.portals.bridges.common.ScriptPostProcess;
+import org.apache.jetspeed.rewriter.JetspeedRewriterController;
+import org.apache.jetspeed.rewriter.RewriterController;
+import org.apache.jetspeed.rewriter.RewriterException;
+import org.apache.jetspeed.rewriter.RulesetRewriter;
+import org.apache.jetspeed.rewriter.html.SwingParserAdaptor;
+import org.apache.jetspeed.rewriter.rules.Ruleset;
+import org.apache.jetspeed.rewriter.xml.SaxParserAdaptor;
/**
* This portlet is executes a Perl/cgi files in a portlet.
+*
+* Note:
+* The Perl Portlet uses the rewriter component that requires config xml
files.
+* Make sre that the portlet application using the Perl Portlet has the
following files included
+* in WEB-INF/conf: rewriter-rules-mapping.xml and default-rewriter-rules.xml
*
* @author <a href="mailto:[EMAIL PROTECTED]">Roger Ruttimann</a>
* @version $Id$
@@ -102,6 +121,13 @@
// Cache the last generated page
String lastPage = null;
+ /* PerlContent rewriter */
+ RulesetRewriter rewriter = null;
+ RewriterController rewriteController = null;
+
+ /** Default encoding */
+ public String defaultEncoding = "iso-8859-1";
+
public void init(PortletConfig config) throws PortletException
{
@@ -273,12 +299,12 @@
String path = portletApplication.getRealPath("/WEB-INF");
String contextPath = path + "/";
- contextPath += scriptPath;
+ String fullScriptPath = contextPath + scriptPath;
// Build full path to scripts
if (perlScript.startsWith("/") == false )
- contextPath += "/";
- contextPath += perlScript;
+ fullScriptPath += "/";
+ fullScriptPath += perlScript;
// command to execute
String command = null;
@@ -286,7 +312,7 @@
// Open the script and read the first line to get the executable
!/usr/bin/perl OR !c:\bin\perl\perl.exe
try
{
- BufferedReader in= new BufferedReader(new
FileReader(contextPath));
+ BufferedReader in= new BufferedReader(new
FileReader(fullScriptPath));
String lnExecutable = in.readLine();
if (lnExecutable != null )
@@ -313,16 +339,16 @@
StringBuffer commandBuffer = new StringBuffer();
if (perlExecutable == null)
- commandBuffer.append(contextPath);
+ commandBuffer.append(fullScriptPath);
else
- commandBuffer.append(perlExecutable).append('
').append(contextPath);
+ commandBuffer.append(perlExecutable).append('
').append(fullScriptPath);
command = new String(commandBuffer.toString());
}
catch(FileNotFoundException e)
{
- writer.println("<P><B>File doesn't exist (" + contextPath +
")</B></P>");
+ writer.println("<P><B>File doesn't exist (" + fullScriptPath +
")</B></P>");
}
catch(IOException e)
{
@@ -343,7 +369,7 @@
// Script info. This is for the Demo only
writer.println("<P>The portlet executes the perl script
defined by the init-params. If you don't get an output make sure that the perl
executable defined in the script is valid.");
writer.println("The executable is defined on the first
line of your
script.</P>Examples<ul><li><B>UNIX/Linux:</B>!/usr/bin/perl</li><li><B>Windows:</B>!c:\\bin\\perl\\perl.exe</li></ul>");
- writer.println("<B><P>Perl Script:</B>" + contextPath +
"<BR>");
+ writer.println("<B><P>Perl Script:</B>" +
fullScriptPath + "<BR>");
writer.println("<B>Perl executable:</B>" +
perlExecutable + "<BR>");
writer.println("<B>Query String:</B>" + query + "</P>");
}
@@ -397,11 +423,56 @@
}
// Close stream
perlResult.close();
-
- // Post Process for generated page
- // Any HREFs and Form actions should be
extended with the ActionURL
+
+ /*
+ * Use rewriter for replacing all URL's with
portlet actions
+ */
+ if (rewriteController == null)
+ {
+ try
+ {
+ // Create rewriter adaptor
+ rewriteController = getController(contextPath);
+ }
+ catch (Exception e)
+ {
+ // Failed to create rewriter controller
+ throw new PortletException("WebContentProtlet
failed to create rewriter controller. Error:"
+ + e.getMessage());
+ }
+ }
+
+ // Any HREFs and Form actions should be extended
with the ActionURL
PortletURL actionURL =
response.createActionURL();
+ byte[] content = this.doWebContent(page,
actionURL, PerlParameters.ACTION_PARAMETER_PERL);
+ ByteArrayInputStream bais = new
ByteArrayInputStream(content);
+ OutputStream oswriter =
response.getPortletOutputStream();
+
+ int BLOCK_SIZE = 4096;
+ byte[] bytes = new byte[BLOCK_SIZE];
+ try
+ {
+ int length = bais.read(bytes);
+ while (length != -1)
+ {
+ if (length != 0)
+ {
+ oswriter.write(bytes, 0, length);
+ }
+ length = bais.read(bytes);
+ }
+ }
+ finally
+ {
+ bytes = null;
+ }
+ // Cache page
+ lastPage = new String(content);
+
+
+ /*
+ // Post Process for generated page
ScriptPostProcess processor = new
ScriptPostProcess();
processor.setInitalPage(page);
processor.postProcessPage(actionURL,
PerlParameters.ACTION_PARAMETER_PERL);
@@ -410,8 +481,10 @@
// Write the page
writer.println(finalPage);
+
// Cache page
lastPage = new String(finalPage);
+ */
}
catch(IOException ioe)
{
@@ -419,5 +492,63 @@
}
}
}
+
+ /*
+ * Generate a rewrite controller using the basic rules file
+ */
+ private RewriterController getController(String contextPath) throws
Exception
+ {
+ Class[] rewriterClasses = new Class[]
+ { PerlContentRewriter.class, PerlContentRewriter.class};
+
+ Class[] adaptorClasses = new Class[]
+ { SwingParserAdaptor.class, SaxParserAdaptor.class};
+ RewriterController rwc = new JetspeedRewriterController(contextPath
+ "conf/rewriter-rules-mapping.xml", Arrays
+ .asList(rewriterClasses), Arrays.asList(adaptorClasses));
+
+ FileReader reader = new FileReader(contextPath +
"conf/default-rewriter-rules.xml");
+
+ Ruleset ruleset = rwc.loadRuleset(reader);
+ reader.close();
+ rewriter = rwc.createRewriter(ruleset);
+ return rwc;
+ }
+
+ protected byte[] doWebContent(StringBuffer perlRenderedPage, PortletURL
actionURL, String actionParameterName)
+ throws PortletException
+ {
+ // Initialization
+ Writer htmlWriter = null;
+
+ ByteArrayOutputStream byteOutputStream = new
ByteArrayOutputStream();
+
+ try
+ {
+ htmlWriter = new OutputStreamWriter(byteOutputStream,
this.defaultEncoding);
+
+ // Set the action URL in the rewriter
+
+ ((PerlContentRewriter) rewriter).setActionURL(actionURL);
+ ((PerlContentRewriter)
rewriter).setActionParameterName(actionParameterName);
+
+ StringReader perlReader = new
StringReader(perlRenderedPage.toString());
+
rewriter.rewrite(rewriteController.createParserAdaptor("text/html"),
perlReader, htmlWriter);
+ htmlWriter.flush();
+ }
+ catch (UnsupportedEncodingException ueex)
+ {
+ throw new PortletException("Encoding " + defaultEncoding +
" not supported. Error: " + ueex.getMessage());
+ }
+ catch (RewriterException rwe)
+ {
+ throw new PortletException("Failed to rewrite Perl ouput.
Error: " + rwe.getMessage());
+ }
+ catch (Exception e)
+ {
+ throw new PortletException("Exception while rewritting Perl
output. Error: " + e.getMessage());
+ }
+
+ return byteOutputStream.toByteArray();
+ }
}
1.1
jakarta-jetspeed-2/portals-bridges/perl/src/java/org/apache/portals/bridges/perl/PerlContentRewriter.java
Index: PerlContentRewriter.java
===================================================================
/* Copyright 2004 Apache Software Foundation
*
* 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.apache.portals.bridges.perl;
import javax.portlet.PortletURL;
import org.apache.jetspeed.rewriter.Rewriter;
import org.apache.jetspeed.rewriter.RulesetRewriterImpl;
/**
* PerlContentRewriter
*
* @author <a href="mailto:[EMAIL PROTECTED]">Roger Ruttimann </a>
* @version $Id: PerlContentRewriter.java,v 1.1 2005/03/21 17:31:11 rogerrut
Exp $
*/
public class PerlContentRewriter extends RulesetRewriterImpl implements
Rewriter {
/** WebContentURL */
public static final String ACTION_PARAMETER_URL = "WCURL";
/* Portlet URL will be used to replace all URL's */
private PortletURL actionURL = null;
/* Parameter name attached to action */
private String actionParameterName = null;
/*
* LocalhostIP Some perl script refer to localhost which doesn't work for
* remote connections. The rewriter will replace any localhost references
* with the IP address
*/
private String localHostIP = null;
/**
* Setters/getters for members
*/
public void setActionURL(PortletURL action) {
this.actionURL = action;
}
public PortletURL getActionURL() {
return this.actionURL;
}
/**
* @return Returns the localHostIP.
*/
public String getLocalHostIP() {
return localHostIP;
}
/**
* @param localHostIP
* The localHostIP to set.
*/
public void setLocalHostIP(String localHostIP) {
this.localHostIP = localHostIP;
}
/**
* @return Returns the actionParameterName.
*/
public String getActionParameterName() {
return actionParameterName;
}
/**
* @param actionParameterName
* The actionParameterName to set.
*/
public void setActionParameterName(String actionParameterName) {
this.actionParameterName = actionParameterName;
}
/**
* rewriteURL
*
* @param url
* @param tag
* @param attribute
* @return the modified url which is a portlet action
*
* Rewrites all URL's in the perl script with portlet actions. Tags
include
* A (AREA) and FORM and replaces any localhost with the real IP address
if
* provided
*/
public String rewriteUrl(String url, String tag, String attribute) {
String modifiedURL = url;
// TODO: Remove debug
System.out.println("Perl HTML output TAG = " + tag + " Attribute = "
+ attribute);
// For now only add PortletActions to URL's which are anchors (tag=a)
or
// FORMS and HREF's (attribute= HREF) -- ignore all others links
if (( tag.compareToIgnoreCase("A") == 0
|| tag.compareToIgnoreCase("FORM") == 0)
&& attribute.compareToIgnoreCase("HREF") == 0) {
// Regular URL just add a portlet action
if (this.actionURL != null) {
// create Action URL
actionURL.setParameter(actionParameterName, modifiedURL);
modifiedURL = actionURL.toString();
}
}
return modifiedURL;
}
/*
* (non-Javadoc)
*
* @see
org.apache.jetspeed.rewriter.Rewriter#shouldRemoveTag(java.lang.String)
*/
/*
* public boolean shouldRemoveTag(String tag) { if
* (tag.equalsIgnoreCase("html")) { return true; } return false; }
*/
/*
* (non-Javadoc)
*
* @see
org.apache.jetspeed.rewriter.Rewriter#shouldStripTag(java.lang.String)
*/
/*
* public boolean shouldStripTag(String tag) { if
* (tag.equalsIgnoreCase("head")) { return true; } return false; }
*/
/*
* (non-Javadoc)
*
* @see org.apache.jetspeed.rewriter.Rewriter#shouldRemoveComments()
*/
/*
* public boolean shouldRemoveComments() { return true; }
*/
}
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