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|
#!/bin/sh
#
# american fuzzy lop++ - fuzzer synchronization tool
# --------------------------------------------------
#
# Originally written by Michal Zalewski
#
# Copyright 2014 Google Inc. All rights reserved.
# Copyright 2019-2023 AFLplusplus Project. All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at:
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# To make this script work:
#
# - Edit FUZZ_HOSTS, FUZZ_DOMAIN, FUZZ_USER, and SYNC_DIR to reflect your
# environment.
#
# - Make sure that the system you are running this on can log into FUZZ_HOSTS
# without a password (authorized_keys or otherwise).
#
# - Make sure that every fuzzer is running with -o pointing to SYNC_DIR and -S
# that consists of its local host name, followed by an underscore, and then
# by some host-local fuzzer ID.
#
# Hosts to synchronize the data across.
FUZZ_HOSTS='host1 host2 host3 host4'
# Domain for all hosts
FUZZ_DOMAIN='example.com'
# Remote user for SSH
FUZZ_USER=bob
# Directory to synchronize
SYNC_DIR='/home/bob/sync_dir'
# We only capture -M main nodes, set the name to your chosen naming scheme
MAIN_NAME='main'
# Interval (seconds) between sync attempts (eg one hour)
SYNC_INTERVAL=$((60 * 60))
if [ "$AFL_ALLOW_TMP" = "" ]; then
if [ "$PWD" = "/tmp" -o "$PWD" = "/var/tmp" ]; then
echo "[-] Error: do not use shared /tmp or /var/tmp directories with this script." 1>&2
exit 1
fi
fi
rm -rf .sync_tmp 2>/dev/null
mkdir .sync_tmp || exit 1
while :; do
# Pull data in...
for host in $FUZZ_HOSTS; do
echo "[*] Retrieving data from ${host}.${FUZZ_DOMAIN}..."
ssh -o 'passwordauthentication no' ${FUZZ_USER}@${host}.$FUZZ_DOMAIN \
"cd '$SYNC_DIR' && tar -czf - ${host}_${MAIN_NAME}*/" > ".sync_tmp/${host}.tgz"
done
# Distribute data. For large fleets, see tips in the docs/ directory.
for dst_host in $FUZZ_HOSTS; do
echo "[*] Distributing data to ${dst_host}.${FUZZ_DOMAIN}..."
for src_host in $FUZZ_HOSTS; do
test "$src_host" = "$dst_host" && continue
echo " Sending fuzzer data from ${src_host}.${FUZZ_DOMAIN}..."
ssh -o 'passwordauthentication no' ${FUZZ_USER}@$dst_host \
"cd '$SYNC_DIR' && tar -xkzf - " < ".sync_tmp/${src_host}.tgz"
done
done
echo "[+] Done. Sleeping for $SYNC_INTERVAL seconds (Ctrl-C to quit)."
sleep $SYNC_INTERVAL
done
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