Index: uc_coupon.module
===================================================================
--- uc_coupon.module	(revision 1186)
+++ uc_coupon.module	(working copy)
@@ -710,6 +710,30 @@
 }
 
 /**
+ * Coupon Per Product Validation Handler
+ *
+ * @param $code
+ *  The coupon code
+ *
+ * @param $item_nid
+ *  The product item node ID
+ *
+ * @return
+ *  Boolean - Can this coupon be used with the given product.
+ */
+function uc_coupon_product_validate($code, $item_nid) {
+  $coupon = db_fetch_object(db_query("SELECT data FROM {uc_coupons} WHERE code = '%s' AND status ='1' AND valid_until > %d", $code, time()));
+  if ($coupon->data) {
+    $coupon->data = unserialize($coupon->data);
+  }
+  if (isset($coupon->data['products']) && (isset($coupon->data['negate_products']) ^ in_array($item_nid, $coupon->data['products']))) {
+    $result = uc_coupon_validate($code);
+    return $result->valid;
+  }
+  return FALSE;
+}
+
+/**
  * Implementation of hook_checkout_pane().
  *
  * Show a pane just above the order total that allows shoppers to enter a coupon