MarcoFalke
6 years ago
parent
ad039aa0d3
commit
fa7ca8ef58
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#!/usr/bin/env python3
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# Copyright (c) 2019 The Bitcoin Core developers
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# Distributed under the MIT software license, see the accompanying
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# file COPYING or http://www.opensource.org/licenses/mit-license.php.
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"""Run fuzz test targets.
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"""
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import argparse
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import configparser
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import os
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import sys
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import subprocess
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import logging
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def main():
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parser = argparse.ArgumentParser(formatter_class=argparse.ArgumentDefaultsHelpFormatter)
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parser.add_argument(
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"-l",
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"--loglevel",
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dest="loglevel",
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default="INFO",
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help="log events at this level and higher to the console. Can be set to DEBUG, INFO, WARNING, ERROR or CRITICAL. Passing --loglevel DEBUG will output all logs to console.",
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)
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parser.add_argument(
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'--export_coverage',
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action='store_true',
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help='If true, export coverage information to files in the seed corpus',
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)
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parser.add_argument(
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'seed_dir',
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help='The seed corpus to run on (must contain subfolders for each fuzz target).',
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)
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parser.add_argument(
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'target',
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nargs='*',
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help='The target(s) to run. Default is to run all targets.',
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)
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args = parser.parse_args()
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# Set up logging
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logging.basicConfig(
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format='%(message)s',
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level=int(args.loglevel) if args.loglevel.isdigit() else args.loglevel.upper(),
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)
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# Read config generated by configure.
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config = configparser.ConfigParser()
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configfile = os.path.abspath(os.path.dirname(__file__)) + "/../config.ini"
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config.read_file(open(configfile, encoding="utf8"))
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if not config["components"].getboolean("ENABLE_FUZZ"):
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logging.error("Must have fuzz targets built")
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sys.exit(1)
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# Build list of tests
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test_list_all = parse_test_list(makefile=os.path.join(config["environment"]["SRCDIR"], 'src', 'Makefile.test.include'))
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if not test_list_all:
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logging.error("No fuzz targets found")
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sys.exit(1)
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logging.info("Fuzz targets found: {}".format(test_list_all))
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args.target = args.target or test_list_all # By default run all
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test_list_error = list(set(args.target).difference(set(test_list_all)))
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if test_list_error:
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logging.error("Unknown fuzz targets selected: {}".format(test_list_error))
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test_list_selection = list(set(test_list_all).intersection(set(args.target)))
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if not test_list_selection:
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logging.error("No fuzz targets selected")
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logging.info("Fuzz targets selected: {}".format(test_list_selection))
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help_output = subprocess.run(
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args=[
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os.path.join(config["environment"]["BUILDDIR"], 'src', 'test', 'fuzz', test_list_selection[0]),
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'-help=1',
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],
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check=True,
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stderr=subprocess.PIPE,
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universal_newlines=True,
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).stderr
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if "libFuzzer" not in help_output:
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logging.error("Must be built with libFuzzer")
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sys.exit(1)
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run_once(
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corpus=args.seed_dir,
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test_list=test_list_selection,
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build_dir=config["environment"]["BUILDDIR"],
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export_coverage=args.export_coverage,
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)
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def run_once(*, corpus, test_list, build_dir, export_coverage):
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for t in test_list:
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args = [
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os.path.join(build_dir, 'src', 'test', 'fuzz', t),
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'-runs=1',
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os.path.join(corpus, t),
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]
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logging.debug('Run {} with args {}'.format(t, args))
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output = subprocess.run(args, check=True, stderr=subprocess.PIPE, universal_newlines=True).stderr
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logging.debug('Output: {}'.format(output))
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if not export_coverage:
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continue
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for l in output.splitlines():
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if 'INITED' in l:
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with open(os.path.join(corpus, t + '_coverage'), 'w', encoding='utf-8') as cov_file:
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cov_file.write(l)
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break
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def parse_test_list(makefile):
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with open(makefile, encoding='utf-8') as makefile_test:
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test_list_all = []
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read_targets = False
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for line in makefile_test.readlines():
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line = line.strip().replace('test/fuzz/', '').replace(' \\', '')
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if read_targets:
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if not line:
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break
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test_list_all.append(line)
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continue
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if line == 'FUZZ_TARGETS =':
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read_targets = True
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return test_list_all
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if __name__ == '__main__':
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main()
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