mirror of https://github.com/MISP/misp-modules
First version of csv import module
- If more than 1 misp type is recognized, for each one an attribute is created - Needs to have header set by user as parameters of the module atm - Review needed to see the feasibility with fields that can create confusion and be interpreted both as misp type or attribute field (for instance comment is a misp type and an attribute field)pull/156/head
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import json, os
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import pymisp
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misperrors = {'error': 'Error'}
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mispattributes = {'input': ['file'], 'output': ['MISP attributes']}
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moduleinfo = {'version': '0.1', 'author': 'Christian Studer',
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'description': 'Import Attributes from a csv file.',
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'module-type': ['import']}
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moduleconfig = ['header']
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duplicatedFields = {'mispType': {'mispComment': 'comment'},
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'attrField': {'eventComment': 'comment'}}
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def handler(q=False):
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if q is False:
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return False
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request = json.loads(q)
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if request.get('file'):
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filename = request['file']
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else:
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misperrors['error'] = "Unsupported attributes type"
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return misperrors
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if not request.get('config') and not request['config'].get('header'):
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misperrors['error'] = "Configuration error"
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return misperrors
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config = request['config'].get('header')
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header = []
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data = []
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with open(filename, 'r') as f:
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for line in f:
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# split comments from data
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if line.startswith('#'):
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header.append(line)
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else:
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data.append(line)
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# find which delimiter is used
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delimiter, length = findDelimiter(config, data)
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# build the attributes
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result = buildAttributes(config, data, delimiter, length)
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r = {'results': [{'types': mispattributes['output'], 'values': result}]}
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return r
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def findDelimiter(header, data):
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n = len(header)
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if n > 1:
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for d in (';', ',', '|'):
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if data[0].count(d) == (n-1):
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return d, n
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break
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else:
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return None, 1
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def buildAttributes(header, dataValues, delimiter, length):
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attributes = []
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# if there is only 1 field of data
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if delimiter is None:
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mispType = header[0]
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for data in dataValues:
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attributes.append({'type': mispType, 'value': data})
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else:
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# split fields that should be recognized as misp attribute types from the others
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list2pop, misp, head = findMispTypes(header)
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# for each line of data
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for data in dataValues:
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datamisp = []
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datasplit = data.split(delimiter)
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# in case there is an empty line or an error
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if len(datasplit) != length:
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continue
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# pop from the line data that matches with a misp type, using the list of indexes
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for l in list2pop:
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datamisp.append(datasplit.pop(l).strip())
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# for each misp type, we create an attribute
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for m, dm in zip(misp, datamisp):
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attribute = {'type': m, 'value': dm}
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for h, ds in zip(head, datasplit):
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if h:
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attribute[h] = ds.strip()
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attributes.append(attribute)
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return attributes
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def findMispTypes(header):
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descFilename = os.path.join(pymisp.__path__[0], 'data/describeTypes.json')
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with open(descFilename, 'r') as f:
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MispTypes = json.loads(f.read())['result'].get('types')
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list2pop = []
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misp = []
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head = []
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for h in reversed(header):
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n = header.index(h)
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# fields that are misp attribute types
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if h in MispTypes:
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list2pop.append(n)
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misp.append(h)
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# handle confusions between misp attribute types and attribute fields
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elif h in duplicatedFields['mispType']:
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# fields that should be considered as misp attribute types
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list2pop.append(n)
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misp.append(duplicatedFields['mispType'].get(h))
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elif h in duplicatedFields['attrField']:
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# fields that should be considered as attribute fields
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head.append(duplicatedFields['attrField'].get(h))
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else:
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head.append(h)
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# return list of indexes of the misp types, list of the misp types, remaining fields that will be attribute fields
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return list2pop, misp, head
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def introspection():
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return mispattributes
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def version():
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moduleinfo['config'] = moduleconfig
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return moduleinfo
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