Move print rendering in an isolated process.

Security review of the PDF rendering code revealed that it is
not sercure. Therefore, this code must be run in a sandbox.
This change moves the rendering code in an isolated process.

bug:16897933

Change-Id: I711ce42a56892db1837950137bfaa79e1d61a7c4

1 files changed, 7 insertions, 0 deletions

diff --git a/graphics/java/android/graphics/pdf/PdfRenderer.java b/graphics/java/android/graphics/pdf/PdfRenderer.java
index b5d9729..1072b3c 100644
--- a/graphics/java/android/graphics/pdf/PdfRenderer.java
+++ b/graphics/java/android/graphics/pdf/PdfRenderer.java
@@ -195,6 +195,7 @@ public final class PdfRenderer implements AutoCloseable {
     public Page openPage(int index) {
         throwIfClosed();
         throwIfPageOpened();
+        throwIfPageNotInDocument(index);
         mCurrentPage = new Page(index);
         return mCurrentPage;
     }
@@ -237,6 +238,12 @@ public final class PdfRenderer implements AutoCloseable {
         }
     }
 
+    private void throwIfPageNotInDocument(int pageIndex) {
+        if (pageIndex >= mPageCount) {
+            throw new IllegalArgumentException("Invalid page index");
+        }
+    }
+
     /**
      * This class represents a PDF document page for rendering.
      */