For octetString values, compare the length against the -supported value

(Issue #5557)

Author: michaelrsweet

CHANGES.md

@@ -6,6 +6,8 @@ Changes in CUPS v2.2.12
 -----------------------
 
 - Updated the systemd service file for cupsd (Issue #5551)
+- The `cupsCheckDestSupported` function did not check octetString values
+  correctly (Issue #5557)
 - The scheduler did not encode octetString values like "job-password" correctly
   for the print filters (Issue #5558)
 

cups/dest-options.c

@@ -1,7 +1,7 @@
 /*
  * Destination option/media support for CUPS.
  *
- * Copyright 2012-2017 by Apple Inc.
+ * Copyright 2012-2019 by Apple Inc.
  *
  * These coded instructions, statements, and computer programs are the
  * property of Apple Inc. and are protected by Federal copyright
@@ -83,6 +83,7 @@ cupsCheckDestSupported(
   ipp_res_t		units_value;	/* Resolution units */
   ipp_attribute_t	*attr;		/* Attribute */
   _ipp_value_t		*attrval;	/* Current attribute value */
+  _ipp_option_t		*map;		/* Option mapping information */
 
 
  /*
@@ -174,9 +175,14 @@ cupsCheckDestSupported(
     * Check literal values...
     */
 
+    map = _ippFindOption(option);
+
     switch (attr->value_tag)
     {
       case IPP_TAG_INTEGER :
+          if (map && map->value_tag == IPP_TAG_STRING)
+            return (strlen(value) <= (size_t)attr->values[0].integer);
+
       case IPP_TAG_ENUM :
           int_value = atoi(value);
 
@@ -189,7 +195,10 @@ cupsCheckDestSupported(
           return (attr->values[0].boolean);
 
       case IPP_TAG_RANGE :
-          int_value = atoi(value);
+          if (map && map->value_tag == IPP_TAG_STRING)
+            int_value = (int)strlen(value);
+          else
+            int_value = atoi(value);
 
           for (i = 0; i < attr->num_values; i ++)
             if (int_value >= attr->values[i].range.lower &&