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67 lines
2.2 KiB
Python
67 lines
2.2 KiB
Python
"""
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Create a cache of the given rules.
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This is only really intended to be used by CI to pre-cache rulesets
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that will be distributed within PyInstaller binaries.
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Usage:
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$ python scripts/cache-ruleset.py rules/ /path/to/cache/directory
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Copyright (C) 2023 Mandiant, Inc. All Rights Reserved.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at: [package root]/LICENSE.txt
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Unless required by applicable law or agreed to in writing, software distributed under the License
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is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and limitations under the License.
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"""
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import os
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import sys
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import logging
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import argparse
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import capa.main
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import capa.rules
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import capa.engine
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import capa.helpers
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import capa.rules.cache
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import capa.features.insn
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logger = logging.getLogger("cache-ruleset")
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def main(argv=None):
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if argv is None:
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argv = sys.argv[1:]
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parser = argparse.ArgumentParser(description="Cache ruleset.")
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capa.main.install_common_args(parser)
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parser.add_argument("rules", type=str, action="append", help="Path to rules")
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parser.add_argument("cache", type=str, help="Path to cache directory")
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args = parser.parse_args(args=argv)
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capa.main.handle_common_args(args)
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if args.debug:
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logging.getLogger("capa").setLevel(logging.DEBUG)
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else:
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logging.getLogger("capa").setLevel(logging.ERROR)
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try:
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os.makedirs(args.cache, exist_ok=True)
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rules = capa.main.get_rules(args.rules, cache_dir=args.cache)
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logger.info("successfully loaded %s rules", len(rules))
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except (IOError, capa.rules.InvalidRule, capa.rules.InvalidRuleSet) as e:
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logger.error("%s", str(e))
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return -1
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content = capa.rules.cache.get_ruleset_content(rules)
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id = capa.rules.cache.compute_cache_identifier(content)
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path = capa.rules.cache.get_cache_path(args.cache, id)
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assert os.path.exists(path)
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logger.info("cached to: %s", path)
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if __name__ == "__main__":
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sys.exit(main())
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