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|
#!/usr/bin/env bash
set -euo pipefail
SCRIPT_NAME=$(basename "$0")
function usage()
{
cat <<EOF
${SCRIPT_NAME}: Launch and validate a shadow simulation to test arti
Usage:
${SCRIPT_NAME} : Launch and validate a shadow simulation
Options:
-h: Print this message.
-s <seed>: Integer PRNG seed
EOF
}
SEED=1
while getopts "hs:" opt ; do
case "$opt" in
h) usage
exit 0
;;
s) SEED="$OPTARG"
;;
*) echo "Unknown option. (Run $0 -h for usage)"
exit 1
;;
esac
done
echo "SEED=$SEED"
# Remove output of previous run
rm -rf shadow.data
export RUST_BACKTRACE=1
# Fix permissions on hidden service dir to prevent tor from bailing.
# TODO: isn't there a way to set the permissions in the git repo? Tried `git
# update-index --chmod`, but it refuses to set permissions on a directory.
chmod 700 shadow.data.template/hosts/fileserver-onion/hs
chmod 700 shadow.data.template/hosts/fileserver-onion-auth/hs
chmod 700 shadow.data.template/hosts/fileserver-onion-arti-auth/authorized_clients
chmod 700 shadow.data.template/hosts/fileserver-onion-arti-auth-ctor/ctor-store
chmod 700 shadow.data.template/hosts/articlient-onion-artiserver-auth-ctor/ctor-store
# Run the simulation
shadow \
--log-level=info \
--template-directory=./shadow.data.template \
--progress=true \
--use-memory-manager=false \
--use-worker-spinning=false \
--seed="$SEED" \
shadow.yaml \
> shadow.log
# Look for any non-empty stderr files. In particular rust panics sometimes end
# up showing up here (even though we try to log them properly).
nonempty_stderr=$(find shadow.data/hosts/ -name '*.stderr' -size +0 -print -quit)
if [ -n "$nonempty_stderr" ]; then
echo "Found non-empty stderr file $nonempty_stderr:"
cat "$nonempty_stderr"
exit 1
fi
# Look for errors in arti logs.
# TODO: Maybe fail on warnings, too? There currently are a few, though.
arti_errs=$(find shadow.data/hosts/ -name 'arti.log.txt' -exec grep --with-filename '\bERROR\b' \{\} \;)
if [ -n "$arti_errs" ]; then
echo "Found arti errors:"
echo "$arti_errs"
exit 1
fi
check_host_xfers() {
hostname="$1"
min="$2"
total="$3"
successes="$(grep -c stream-success shadow.data/hosts/"$hostname"/tgen.*.stdout || true)"
result="$hostname had $successes/$total successful streams (required at least $min)"
if [ "$successes" -ge "$min" ]
then
echo "PASS: $result"
else
echo "FAIL: $result"
exit 1
fi
}
# Check whether file transfers via arti inside the simulation succeeded
check_host_xfers articlient 10 10
check_host_xfers articlient-extra 10 10
check_host_xfers articlient-bridge 10 10
check_host_xfers articlient-bridge-obfs4 10 10
check_host_xfers torclient-onion-artiserver 10 10
check_host_xfers torclient-onion-artiserver-full-vanguards 10 10
# arti-client onion-service transfers have tended to be a bit less reliable.
# For a while we only required 1/10 to succeed. It looks like it's gotten
# better, but still seeing some occasional failures so requiring 5/10 for now.
# https://gitlab.torproject.org/tpo/core/arti/-/issues/2109
check_host_xfers articlient-onion 5 10
check_host_xfers articlient-onion-artiserver 5 10
check_host_xfers articlient-onion-artiserver-full-vanguards 5 10
check_host_xfers articlient-onion-artiserver-auth 5 10
check_host_xfers articlient-onion-artiserver-auth-2 5 10
check_host_xfers articlient-onion-artiserver-auth-ctor 5 10
# https://gitlab.torproject.org/tpo/core/arti/-/issues/1986
check_host_xfers articlient-onion-auth 1 10
HOSTS=(
articlient-onion
articlient-onion-auth
articlient-onion-artiserver
articlient-onion-artiserver-full-vanguards
articlient-onion-artiserver-auth
articlient-onion-artiserver-auth-ctor
fileserver-onion-arti
fileserver-onion-arti-full-vanguards
fileserver-onion-arti-auth
fileserver-onion-arti-auth-ctor
)
for HOST in "${HOSTS[@]}"; do
# There should be only one such file per host.
file=(shadow.data/hosts/"$HOST"/arti.log.txt)
# TODO: this is a temporary measure until we implement other ways of testing
# that the circuits we've built have the desired properties.
bugs="$(grep -c Bug "${file[*]}" || true)"
if [ "$bugs" -eq 0 ]
then
echo "$HOST simulation successful"
else
echo "Failed. Found $bugs internal errors in ${file[*]}."
exit 1
fi
done
pushd shadow.data/hosts/articlient-bridge/
for PCAP in *.pcap; do
# verify all connection are either from/to the bridge, or local.
LEAK=$(tshark -r "$PCAP" 'ip.src != 100.0.0.2 && ip.dst != 100.0.0.2 && ip.dst != 127.0.0.0/8')
if [ "$LEAK" ]; then
echo "Found tcp leaks in PCAP: $PCAP"
echo "$LEAK"
exit 1
fi
done
DNS_LEAK=$(grep -l shadow_hostname_to_addr_ipv4 arti.*.strace || true)
if [ "$DNS_LEAK" ]; then
echo "Found DNS leaks in $DNS_LEAK"
exit 1
fi
popd
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