[gnome-initial-setup/shell/4765: 44/362] factory-mode: make sure to UTF-8 validate the product_serial string

[Jasper St. Pierre <jstpierre src gnome org>]

commit 6608138c1598c00bc37bebac66d22bd463b702e7
Author: Cosimo Cecchi <cosimo endlessm com>
Date:   Thu May 22 15:40:56 2014 -0700

    factory-mode: make sure to UTF-8 validate the product_serial string
    
    To put it into a barcode (or a label for what matters) this needs to be
    valid unicode, or we'll get undefined behavior, and possibly spin in an
    infinite loop trying to construct the barcode.
    Just bail out in case what we read is not valid UTF-8.
    
    [endlessm/eos-shell#2437]

 .../pages/language/gis-language-page.c             |    7 +++++++
 1 files changed, 7 insertions(+), 0 deletions(-)
---
diff --git a/gnome-initial-setup/pages/language/gis-language-page.c 
b/gnome-initial-setup/pages/language/gis-language-page.c
index e085e35..bfd5be4 100644
--- a/gnome-initial-setup/pages/language/gis-language-page.c
+++ b/gnome-initial-setup/pages/language/gis-language-page.c
@@ -237,6 +237,13 @@ get_serial_version (void)
     return NULL;
   }
 
+  /* ZBarcode_Encode_and_Print() needs UTF-8 */
+  if (!g_utf8_validate (serial, -1, NULL)) {
+    g_warning ("Error when reading %s: not a valid UTF-8 string", SERIAL_VERSION_FILE);
+    g_free (serial);
+    return NULL;
+  }
+
   return serial;
 }