Modules for expansion services, import and export in MISP http://misp.github.io/misp-modules
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import json
try:
from stix2patterns.validator import run_validator
except ImportError:
print("stix2 patterns python library is missing, use 'pip3 install stix2-patterns' to install it.")
misperrors = {'error': 'Error'}
mispattributes = {'input': ['stix2-pattern'], 'output': ['text']}
moduleinfo = {'version': '0.1', 'author': 'Christian Studer', 'module-type': ['hover'],
'description': 'An expansion hover module to perform a syntax check on stix2 patterns.'}
moduleconfig = []
def handler(q=False):
if q is False:
return False
request = json.loads(q)
if not request.get('stix2-pattern'):
misperrors['error'] = 'STIX2 pattern missing'
return misperrors
pattern = request.get('stix2-pattern')
syntax_errors = []
for p in pattern[1:-1].split(' AND '):
syntax_validator = run_validator("[{}]".format(p))
if syntax_validator:
for error in syntax_validator:
syntax_errors.append(error)
if syntax_errors:
s = 's' if len(syntax_errors) > 1 else ''
s_errors = ""
for error in syntax_errors:
s_errors += "{}\n".format(error[6:])
result = "Syntax error{}: \n{}".format(s, s_errors[:-1])
else:
result = "Syntax valid"
return {'results': [{'types': mispattributes['output'], 'values': result}]}
def introspection():
return mispattributes
def version():
moduleinfo['config'] = moduleconfig
return moduleinfo