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#!/usr/bin/env python3
# Requires Python 3.6+.
# Author: Chris Ball <chris@printf.net>
# Ported from Marc "van Hauser" Heuse's "benchmark.sh".
import asyncio
import glob
import json
import multiprocessing
import os
import shutil
import sys
from decimal import Decimal
debug = False
targets = [
{"source": "../test-instr.c", "binary": "test-instr"},
{"source": "../utils/persistent_mode/test-instr.c", "binary": "test-instr-persistent-shmem"},
]
modes = ["single-core", "multi-core"]
results = {}
colors = {
"blue": "\033[1;94m",
"gray": "\033[1;90m",
"green": "\033[0;32m",
"red": "\033[0;31m",
"reset": "\033[0m",
}
async def clean_up() -> None:
"""Remove temporary files."""
shutil.rmtree("in")
for target in targets:
# os.remove(target["binary"])
for mode in modes:
for outdir in glob.glob(f"/tmp/out-{mode}-{target['binary']}*"):
shutil.rmtree(outdir)
async def check_deps() -> None:
"""Check if the necessary files exist and are executable."""
if not (os.access("../afl-fuzz", os.X_OK) and os.access("../afl-cc", os.X_OK) and os.path.exists("../SanitizerCoveragePCGUARD.so")):
sys.exit(f"{colors['red']}Error: you need to compile AFL++ first, we need afl-fuzz, afl-clang-fast and SanitizerCoveragePCGUARD.so built.{colors['reset']}")
async def prep_env() -> dict:
# Unset AFL_* environment variables
for e in list(os.environ.keys()):
if e.startswith("AFL_"):
os.environ.pop(e)
# Create input directory and file
os.makedirs("in", exist_ok=True)
with open("in/in.txt", "wb") as f:
f.write(b"\x00" * 10240)
# Rest of env
AFL_PATH = os.path.abspath("../")
os.environ["PATH"] = AFL_PATH + ":" + os.environ["PATH"]
return {
"AFL_BENCH_JUST_ONE": "1",
"AFL_DISABLE_TRIM": "1",
"AFL_I_DONT_CARE_ABOUT_MISSING_CRASHES": "1",
"AFL_NO_UI": "1",
"AFL_TRY_AFFINITY": "1",
"PATH": f"{AFL_PATH}:{os.environ['PATH']}",
}
async def compile_target(source: str, binary: str) -> None:
(returncode, stdout, stderr) = await run_command(
["afl-cc", "-o", binary, source],
env={"AFL_INSTRUMENT": "PCGUARD", "PATH": os.environ["PATH"]},
)
if returncode != 0:
sys.exit(f"{colors['red']} [*] Error: afl-cc is unable to compile: {stderr} {stdout}{colors['reset']}")
async def cool_down() -> None:
"""Avoid the next test run's results being contaminated by e.g. thermal limits hit on this one."""
print(f"{colors['blue']}Taking a five second break to stay cool.{colors['reset']}")
await asyncio.sleep(10)
async def run_command(args, env) -> (int | None, bytes, bytes):
if debug:
print(f"\n{colors['blue']}Launching command: {args} with env {env}{colors['reset']}")
p = await asyncio.create_subprocess_exec(*args, stdout=asyncio.subprocess.PIPE, stderr=asyncio.subprocess.PIPE, env=env)
stdout, stderr = await p.communicate()
return (p.returncode, stdout, stderr)
async def colon_value_or_none(filename: str, searchKey: str) -> str | None:
"""Read a value (e.g. 'cpu MHz : 4976.109') given its filename and key."""
with open(filename, "r") as fh:
for line in fh:
kv = line.split(": ", 1)
if kv and len(kv) == 2:
(key, value) = kv
key = key.strip()
value = value.strip()
if key == searchKey:
return value
return None
async def main() -> None:
# Remove stale files, if necessary.
try:
await clean_up()
except FileNotFoundError:
pass
await check_deps()
env_vars = await prep_env()
cpu_count = multiprocessing.cpu_count()
print(f"{colors['gray']} [*] Preparing environment{colors['reset']}")
print(f"{colors['gray']} [*] Ready, starting benchmark - this will take approx 1-2 minutes...{colors['reset']}")
for target in targets:
await compile_target(target["source"], target["binary"])
for mode in modes:
await cool_down()
print(f" [*] {mode} {target['binary']} benchmark starting, execs/s: ", end="", flush=True)
if mode == "single-core":
cpus = [0]
elif mode == "multi-core":
cpus = range(0, cpu_count)
basedir = f"/tmp/out-{mode}-{target['binary']}-"
args = [["afl-fuzz", "-i", "in", "-o", f"{basedir}{cpu}", "-M", f"{cpu}", "-s", "123", "-D", f"./{target['binary']}"] for cpu in cpus]
tasks = [run_command(args[cpu], env_vars) for cpu in cpus]
output = await asyncio.gather(*tasks)
if debug:
for _, (_, stdout, stderr) in enumerate(output):
print(f"{colors['blue']}Output: {stdout} {stderr}{colors['reset']}")
execs = sum([Decimal(await colon_value_or_none(f"{basedir}{cpu}/{cpu}/fuzzer_stats", "execs_per_sec")) for cpu in cpus])
print(f"{colors['green']}{execs}{colors['reset']}")
print("\nComparison: (note that values can change by 10-20% per run)")
with open("COMPARISON", "r") as f:
print(f.read())
await clean_up()
if __name__ == "__main__":
asyncio.run(main())
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