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misp-modules
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Merge branch 'features_csvimport' of github.com:MISP/misp-modules into new_module

pull/304/head
chrisr3d 2019-04-30 17:19:34 +02:00
parent 922782f24b ee560155a4
commit ed7a14b057
1 changed files with 94 additions and 17 deletions
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111
misp_modules/modules/import_mod/csvimport.py
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@ -21,15 +21,48 @@ userConfig = {'header': {
duplicatedFields = {'mispType': {'mispComment': 'comment'},
'attrField': {'attrComment': 'comment'}}
attributesFields = ['type', 'value', 'category', 'to_ids', 'comment', 'distribution']
misp_standard_csv_header = ['uuid','event_id','category','type','value','comment','to_ids','date',
'object_relation','object_uuid','object_name','object_meta_category']
misp_context_additional_fields = ['event_info','event_member_org','event_source_org','event_distribution',
'event_threat_level_id','event_analysis','event_date','event_tag']
misp_extended_csv_header = misp_standard_csv_header[:9] + ['attribute_tag'] + misp_standard_csv_header[9:] + misp_context_additional_fields
delimiters = [',', ';', '|', '/', '\t', ' ']
class CsvParser():
def __init__(self, header, has_header):
self.header = header
self.fields_number = len(header)
self.has_header = has_header
self.attributes = []
def __init__(self, header, has_header, data):
data_header = data[0]
if data_header == misp_standard_csv_header or data_header == misp_extended_csv_header:
self.header = misp_standard_csv_header if data_header == misp_standard_csv_header else misp_extended_csv_header[:13]
self.from_misp = True
self.data = data[1:]
else:
self.from_misp = False
self.has_header = has_header
if header:
self.header = header
self.fields_number = len(header)
self.parse_data(data)
else:
self.has_delimiter = True
self.fields_number, self.delimiter, self.header = self.get_delimiter_from_header(data[0])
self.data = data
self.result = []
def get_delimiter_from_header(self, data):
delimiters_count = {}
for d in delimiters:
length = data.count(d)
if length > 0:
delimiters_count[d] = data.count(d)
if len(delimiters_count) == 0:
length = 0
delimiter = None
header = [data]
else:
length, delimiter = max((n, v) for v, n in delimiters_count.items())
header = data.split(delimiter)
return length + 1, delimiter, header
def parse_data(self, data):
return_data = []
@ -48,6 +81,7 @@ class CsvParser():
return_data.append(line)
# find which delimiter is used
self.delimiter = self.find_delimiter()
if self.fields_number == 0: self.header = return_data[0].split(self.delimiter)
self.data = return_data[1:] if self.has_header else return_data
def parse_delimiter(self, line):
@ -59,6 +93,45 @@ class CsvParser():
_, delimiter = max((n, v) for v, n in self.delimiter_count.items())
return delimiter
def parse_csv(self):
if self.from_misp:
self.build_misp_event()
else:
self.buildAttributes()
def build_misp_event(self):
l_attributes = []
l_objects = []
objects = defaultdict(list)
header_length = len(self.header)
attribute_fields = self.header[:1] + self.header[2:6]
for line in self.data:
attribute = {}
try:
try:
a_uuid,_,a_category,a_type,value,comment,to_ids,_,relation,o_uuid,o_name,o_category = line[:header_length]
except ValueError:
a_uuid,_,a_category,a_type,value,comment,to_ids,_,relation,tag,o_uuid,o_name,o_category = line[:header_length]
if tag: attribute['tags'] = tag
except ValueError:
continue
for t, v in zip(attribute_fields, [a_uuid, a_category, a_type, value, comment]):
attribute[t] = v.replace('"', '')
attribute['to_ids'] = True if to_ids == '1' else False
if relation:
attribute["object_relation"] = relation.replace('"', '')
object_index = tuple(o.replace('"', '') for o in (o_uuid,o_name,o_category))
objects[object_index].append(attribute)
else:
l_attributes.append(attribute)
for keys, attributes in objects.items():
misp_object = {}
for t, v in zip(['uuid','name','meta-category'], keys):
misp_object[t] = v
misp_object['Attribute'] = attributes
l_objects.append(misp_object)
self.result = {"Attribute": l_attributes, "Object": l_objects}
def buildAttributes(self):
# if there is only 1 field of data
if self.delimiter is None:
@ -66,7 +139,7 @@ class CsvParser():
for data in self.data:
d = data.strip()
if d:
self.attributes.append({'types': mispType, 'values': d})
self.result.append({'types': mispType, 'values': d})
else:
# split fields that should be recognized as misp attribute types from the others
list2pop, misp, head = self.findMispTypes()
@ -86,10 +159,10 @@ class CsvParser():
for h, ds in zip(head, datasplit):
if h:
attribute[h] = ds.strip()
self.attributes.append(attribute)
self.result.append(attribute)
def findMispTypes(self):
descFilename = os.path.join(pymisp.__path__[0], 'data/describeTypes.json')
descFilename = os.path.join(pymisp_path[0], 'data/describeTypes.json')
with open(descFilename, 'r') as f:
MispTypes = json.loads(f.read())['result'].get('types')
list2pop = []
@ -125,21 +198,25 @@ def handler(q=False):
request = json.loads(q)
if request.get('data'):
data = base64.b64decode(request['data']).decode('utf-8')
data = [line for line in csv.reader(io.TextIOWrapper(io.BytesIO(data.encode()), encoding='utf-8'))]
else:
misperrors['error'] = "Unsupported attributes type"
return misperrors
if not request.get('config') and not request['config'].get('header'):
misperrors['error'] = "Configuration error"
return misperrors
header = request['config'].get('header').split(',')
header = [c.strip() for c in header]
has_header = request['config'].get('has_header')
has_header = True if has_header == '1' else False
csv_parser = CsvParser(header, has_header)
csv_parser.parse_data(data.split('\n'))
if not request.get('config') and not request['config'].get('header'):
if has_header:
header = []
else:
misperrors['error'] = "Configuration error"
return misperrors
else:
header = request['config'].get('header').split(',')
header = [c.strip() for c in header]
csv_parser = CsvParser(header, has_header, data)
# build the attributes
csv_parser.buildAttributes()
r = {'results': csv_parser.attributes}
csv_parser.parse_csv()
r = {'results': csv_parser.result}
return r