This patch removes the support for copy and paste protection from pdf documents.

To apply:

cd xpdf-0.xx/
patch -p1 < xpdf-ro-remove.patch

diff -ruN xpdf-0.92/xpdf/pdftotext.cc xpdf-ro-removed-0.92/xpdf/pdftotext.cc
--- xpdf-0.92/xpdf/pdftotext.cc	Mon Dec  4 05:28:07 2000
+++ xpdf-ro-removed-0.92/xpdf/pdftotext.cc	Tue Jul  3 18:34:22 2001
@@ -113,10 +113,10 @@
   }
 
   // check for copy permission
-  if (!doc->okToCopy()) {
-    error(-1, "Copying of text from this document is not allowed.");
-    goto err;
-  }
+  //  if (!doc->okToCopy()) {
+  //    error(-1, "Copying of text from this document is not allowed.");
+  //  goto err;
+  // }
 
   // construct text file name
   if (argc == 3) {
diff -ruN xpdf-0.92/xpdf/xpdf.cc xpdf-ro-removed-0.92/xpdf/xpdf.cc
--- xpdf-0.92/xpdf/xpdf.cc	Mon Dec  4 05:28:07 2000
+++ xpdf-ro-removed-0.92/xpdf/xpdf.cc	Tue Jul  3 18:39:29 2001
@@ -1229,7 +1229,9 @@
 	s = out->getText(selectXMin, selectYMin, selectXMax, selectYMax);
 	win->setSelection(NULL, s);
       } else {
-	error(-1, "Copying of text from this document is not allowed.");
+	error(-1, "Copying of text from this document is not allowed, but possible :-).");
+	s = out->getText(selectXMin, selectYMin, selectXMax, selectYMax);
+	win->setSelection(NULL, s);
       }
 #endif