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101 lines
3.5 KiB
101 lines
3.5 KiB
import json
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import copy
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import splunk.rest
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import splunk.field_extractor.mgr as mgr
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from splunk.field_extractor.RegexBuilder import FXData, TableUINewRule, TableUIExistingRule, TableUIEvents
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from copy import deepcopy
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def check(args, kwargs, required=True):
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for rarg, (rtype, rvals) in args.items():
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if rarg not in kwargs:
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if required:
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raise Exception("Missing required argument: %s" % rarg)
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else: continue
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val = kwargs[rarg]
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if rtype == 'choice' and val not in rvals:
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raise Exception("Value for %s must be one of the following: %s" % (rarg, rvals))
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elif rtype == 'int':
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try:
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rmin, rmax = rvals
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val = int(val)
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if val < rmin or val > rmax: raise Exception
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kwargs[rarg] = val
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except:
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raise Exception("Value for %s must be an integer between %d and %d" %(rarg,rmin,rmax))
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elif rtype == "json":
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try:
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kwargs[rarg] = json.loads(kwargs[rarg])
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except Exception as e:
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raise e
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else: pass
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return kwargs
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def checkArgs(required_args, optional_args, kwargs):
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check(required_args, kwargs)
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check(optional_args, kwargs, False)
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for k in kwargs:
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if k not in required_args and k not in optional_args:
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raise Exception("Unknown argument %s" % k)
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return kwargs
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def mungeExamples(examples, fieldName):
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munged = copy.deepcopy(examples)
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for example in munged:
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if '_rawtext' in example:
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fulltext = example['_rawtext']
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del example['_rawtext']
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eventDict = dict()
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eventDict[fieldName] = fulltext
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example['_event'] = eventDict
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return munged
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TableUIHandlers = {
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'rules_new': TableUINewRule(),
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'rules_existing': TableUIExistingRule(),
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'events': TableUIEvents(),
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}
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class RegexGenHandler(splunk.rest.BaseRestHandler):
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def handle_GET(self):
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required_args = {
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"field": ('string', None),
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"examples": ('json', None),
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"sid": ('string', None)
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}
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optional_args = {
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"filter": ('string', None),
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"counter_examples": ('json', None),
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"count": ('int', (1,500)),
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"offset": ('int', (0,1000))
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}
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kwargs = checkArgs(required_args, optional_args, self.args)
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ex = mungeExamples(kwargs['examples'], kwargs['field'])
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rules = mgr.gtfo(
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self.sessionKey,
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kwargs['field'],
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mungeExamples(kwargs['examples'], kwargs['field']),
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mungeExamples(kwargs.get('counter_examples', []), kwargs['field']),
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kwargs.get('filter', ''),
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kwargs['sid'],
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kwargs.get('offset', 0),
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kwargs.get('count', 100)
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)
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self.response.setHeader('content-type', 'application/json')
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response = { 'rules': rules }
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response.update(kwargs)
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self.response.write(json.dumps(response))
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def handle_POST(self):
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fxd = FXData(require={'sid': ('string', None),
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'type': ('choice', ('rules_new', 'rules_existing', 'events'))})
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fxd.check(self.args, ignoreOthers=True)
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results = TableUIHandlers[self.args['type']].setSessionKey(self.sessionKey).results(self.args)
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self.response.setHeader('content-type', 'application/json')
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self.response.write(json.dumps(results, indent=2, ensure_ascii=False))
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