Fixed lxml parser exception which occurs during from_dict() on openioc and maec extensions

Author: Bryan Worrell

stix/extensions/malware/maec_4_1_malware.py

@@ -4,6 +4,7 @@
 import stix.bindings.extensions.malware.maec_4_1 as ext_binding
 from lxml import etree
 from itertools import izip
+from StringIO import StringIO
 
 # TODO: enable use of  python-maec here
 
@@ -89,7 +90,7 @@ def from_dict(cls, d, return_obj=None):
         super(MAECInstance, cls).from_dict(d, return_obj)
         if 'maec' in d:
             parser = etree.ETCompatXMLParser(huge_tree=True)
-            return_obj.maec = etree.parse(d['maec'], parser=parser)
+            return_obj.maec = etree.parse(StringIO(d['maec']), parser=parser)
 
         return return_obj    
 

stix/extensions/test_mechanism/open_ioc_2010_test_mechanism.py

@@ -8,6 +8,7 @@
 import stix.bindings.extensions.test_mechanism.open_ioc_2010 as open_ioc_tm_binding
 from lxml import etree
 from itertools import izip
+from StringIO import StringIO
 
 class OpenIOCTestMechanism(_BaseTestMechanism):
     _namespace = "http://stix.mitre.org/extensions/TestMechanism#OpenIOC2010-1"
@@ -92,7 +93,7 @@ def from_dict(cls, d, return_obj=None):
         super(OpenIOCTestMechanism, cls).from_dict(d, return_obj)
         if 'ioc' in d:
             parser = etree.ETCompatXMLParser(huge_tree=True)
-            return_obj.ioc = etree.parse(d['ioc'], parser=parser)
+            return_obj.ioc = etree.parse(StringIO(d['ioc']), parser=parser)
 
         return return_obj