Attached is a patch that allows the execute method in
RemoveLaunchApplication to properly handle PRIndirectReference
objects. I was getting ClassCastExceptions.
On 10/5/05, Bruno Lowagie <[EMAIL PROTECTED]> wrote:
> Mark wrote:
> > Is there a way to combat embedded commands is PDF files with iText?
> > Here is a CERT advisory to describe what I would like to fix.
>
> I wrote a new plug-in that looks for Launch Actions and replaces them
> with a JavaScript action. It is called RemoveLaunchApplication. You can
> get it from CVS in package com.lowagie.tools.plugins. Please download
> it, test it and let me know if it solves your problem.
> br,
> Bruno
>
Index: RemoveLaunchApplication.java
===================================================================
RCS file:
/cvsroot/itext/src/com/lowagie/tools/plugins/RemoveLaunchApplication.java,v
retrieving revision 1.1
diff -r1.1 RemoveLaunchApplication.java
56a57
> import com.lowagie.text.pdf.PRIndirectReference;
126,140c127,153
< l = (PdfDictionary)d.get(PdfName.A);
< if (l == null) continue;
< n = (PdfName)l.get(PdfName.S);
< if (PdfName.LAUNCH.equals(n)) {
< if (l.get(PdfName.F) != null) {
< System.out.println("Removed: " +
l.get(PdfName.F));
< l.remove(PdfName.F);
< }
< if (l.get(PdfName.WIN) != null) {
< System.out.println("Removed: " +
l.get(PdfName.WIN));
< l.remove(PdfName.WIN);
< }
< l.put(PdfName.S, PdfName.JAVASCRIPT);
< l.put(PdfName.JS, new
PdfString("app.alert('Launch Application Action removed by iText');\r"));
< }
---
>
> PdfObject obj = d.get(PdfName.A);
> if( obj instanceof PdfDictionary )
> {
> l = (PdfDictionary)d.get(PdfName.A);
> if (l == null) continue;
> n = (PdfName)l.get(PdfName.S);
> if (PdfName.LAUNCH.equals(n)) {
> if (l.get(PdfName.F) != null) {
> System.out.println("Removed: " +
> l.get(PdfName.F));
> l.remove(PdfName.F);
> }
> if (l.get(PdfName.WIN) != null) {
> System.out.println("Removed: " +
> l.get(PdfName.WIN));
> l.remove(PdfName.WIN);
> }
> l.put(PdfName.S, PdfName.JAVASCRIPT);
> l.put(PdfName.JS, new
> PdfString("app.alert('Launch Application Action removed by iText');\r"));
> }
> }
> else if( obj instanceof PRIndirectReference )
> {
> PRIndirectReference iRef = (PRIndirectReference)obj;
> if( iRef == null ) continue;
>
> System.out.println("Found an indirect object");
> }
