[Bug 687317] New: EncryptionR=2 doesn't work with Permissions=-44

Log message:
Fix pdfwrite allowable Permissions for EncryptionR=2.

DETAILS:
The code was assuming that the extra permissions should be 0's, 
when in fact they should be 1's.  The fixed code is a bit more 
conservative and requires that all reserved bits match the PDF 
specification.

diff -u -r1.89 gdevpdf.c
--- a/gdevpdf.c 13 Feb 2004 08:08:35 -0000      1.89
+++ b/gdevpdf.c 25 Feb 2004 03:33:54 -0000
@@ -545,7 +545,8 @@
        eprintf("PDF encryption key length must be a multiple of 8.\n");
        return_error(gs_error_rangecheck);
     }
-    if (pdev->EncryptionR == 2 && (pdev->Permissions & (0xF << 8))) {
+    if (pdev->EncryptionR == 2 &&
+       ((pdev->Permissions & (0xFFFFFFC3)) != 0xFFFFFFC0)) {
        eprintf("Some of Permissions are not allowed with R=2.\n");
        return_error(gs_error_rangecheck);
     }
Russell Lang                   [email protected]
Ghostgum Software Pty Ltd      http://www.ghostgum.com.au/