Thomas Patzke
64 lines
2.4 KiB
Python
64 lines
2.4 KiB
Python
# Sigma modifier mixins
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# Copyright 2019 Thomas Patzke, Florian Roth
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU Lesser General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU Lesser General Public License for more details.
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# You should have received a copy of the GNU Lesser General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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from sigma.parser.condition import ConditionAND, ConditionBase, ConditionOR, NodeSubexpression
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class ListOrStringModifierMixin(object):
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"""
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Definitions and convenience methods for modifiers that can be applied to lists and strings.
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Defines appropriate valid_input_types and takes care that method apply_str() or apply_list()
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is called.
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Default behaviors:
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* apply_list() calls apply_str(str) for each value and returns list with all results.
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* apply_str(str) returns string without modifications
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"""
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valid_input_types = (list, tuple, str, )
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def apply(self):
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if isinstance(self.value, (list, tuple, ConditionBase, NodeSubexpression)):
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return self.apply_list(self.value)
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else:
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return self.apply_str(self.value)
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def apply_list(self, l):
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"""Method is called if modifier value contains a list"""
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if isinstance(l, (list, tuple)):
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l = [
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self.apply_str(v)
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if isinstance(v, str)
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else self.apply_list(v)
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for v in l ]
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rl = list()
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for i in l:
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if type(i) in { list, tuple, set }:
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rl.extend(i)
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else:
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rl.append(i)
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return rl
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elif isinstance(l, NodeSubexpression):
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return NodeSubexpression(self.apply_list(l.items))
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elif isinstance(l, ( ConditionOR, ConditionAND )):
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cond = l.__class__()
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cond.items = self.apply_list(l.items)
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return cond
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def apply_str(self, val : str):
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"""Method is called if modifier input value contains a string or once for each list element"""
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return val
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