1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
|
#!/bin/bash
# Copyright (c) 2012, 2013 Peter Palfrader <peter@palfrader.org>
#
# Permission is hereby granted, free of charge, to any person obtaining
# a copy of this software and associated documentation files (the
# "Software"), to deal in the Software without restriction, including
# without limitation the rights to use, copy, modify, merge, publish,
# distribute, sublicense, and/or sell copies of the Software, and to
# permit persons to whom the Software is furnished to do so, subject to
# the following conditions:
#
# The above copyright notice and this permission notice shall be
# included in all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
set -e
set -u
shopt -s extglob
usage() {
echo "Usage: $0 [-v [-v]] [-d <datadir>] <torserver-fpr> <targethost>[:<targetport>] [<targethost>[:<targetport>] [...]]"
echo " If torserver-fpr is -, a list of fingerprints is read from stdin"
}
verbose=0
datadir=""
while getopts "vhd:" OPTION
do
case "$OPTION" in
v)
verbose=$((verbose + 1))
;;
h)
usage
exit 0
;;
d)
datadir="$OPTARG"
;;
*)
usage >&2
exit 1
esac
done
shift $(($OPTIND - 1))
if [ "${1:-}" = "--help" ]; then
usage
exit 0
elif [ "$#" -lt 2 ]; then
usage >&2
exit 1
fi
torserver="$1"; shift
declare -a targets=("$@")
socksport=$((RANDOM % 40000 + 20000))
mapaddr="192.0.2.1"
logpid=""
torpid=""
tmpdir=""
cleanup() {
[ -z "$torpid" ] || kill "$torpid" || true
[ -z "$logpid" ] || kill "$logpid" || true
[ -z "$tmpdir" ] || rm -rf "$tmpdir" || true
}
tmpdir=$(mktemp -d "/tmp/cert-check-XXXXXX")
trap 'cleanup' EXIT
pidfile="$tmpdir/pid"
torlog="$tmpdir/log"
if [ "$verbose" -gt 0 ]; then
tail -F "$torlog" &
logpid=$!
fi
if command -v tor > /dev/null; then
tor="tor"
elif [ -x /usr/sbin/tor ]; then
tor="/usr/sbin/tor"
else
echo >&2 "Cannot find tor executable"
exit 1
fi
if [ "$verbose" -gt 1 ]; then
loglevel="info"
else
loglevel="notice"
fi
datadir=${datadir:-$tmpdir/tor}
cat > "$tmpdir/torrc" << EOF
DataDirectory $datadir
RunAsDaemon 1
SocksPort $socksport
PidFile $pidfile
Log $loglevel file $torlog
SafeLogging 0
ControlSocket $tmpdir/sock
StrictNodes 1
EOF
cat > "$tmpdir/torsocks.conf" << EOF
server = 127.0.0.1
server_port = $socksport
EOF
mkdir -p -m 0700 "$datadir"
if [ "$verbose" -gt 0 ]; then hush=""; else hush="--hush"; fi
"$tor" $hush -f "$tmpdir/torrc"
torpid="$(cat $pidfile)"
eatdata() {
local fn="$1"; shift
if [ "$verbose" -gt 0 ]; then
tee "$fn"
else
cat > "$fn"
fi
}
expect_ok() {
local line
read code line <&${COPROC[0]}
line=$(echo "$line" | tr -d '\r')
if ! [ "$code" = "250" ]; then
echo >&2 "Tor said '$code $line' - no idea what that means"
exit 1
fi
}
for ((i=0; i < ${#targets[@]}; i++)); do
host="${targets[$i]}"
[ "${host%%+([0-9])}" = "$host" ] && host="$host:443"
[ "$verbose" = 0 ] || echo "Directly to $host:"
openssl s_client -no_ticket -showcerts -connect "$host" < /dev/null 2>&1 | eatdata "$tmpdir/cert-direct-$i"
egrep -v '(Session-ID|Master-Key|Start Time):' < "$tmpdir/cert-direct-$i" > "$tmpdir/cert-direct-$i.filtered"
[ "$verbose" = 0 ] || echo "===="
done
coproc socat UNIX-CONNECT:"$tmpdir/sock" -
echo 'AUTHENTICATE' >&${COPROC[1]}
expect_ok
errors=0
while : ; do
if [ "$torserver" = "-" ]; then
read server
[ -n "$server" ] || break
else
server="$torserver"
fi
server="${server// /}"
# de-base64 if needed
if [ "$(echo "$server" | wc -c)" = 28 ] ; then
server="$(echo "$server" | perl -MMIME::Base64 -e 'print unpack("H*", decode_base64(<>))')"
fi
[ "$verbose" = 0 ] || echo "Setting ExitNodes $server"
echo "RESETCONF ExitNodes" >&${COPROC[1]}
expect_ok
echo "SETCONF ExitNodes=\$$server" >&${COPROC[1]}
expect_ok
for ((i=0; i < ${#targets[@]}; i++)); do
host="${targets[$i]}"
[ "${host%%+([0-9])}" = "$host" ] && host="$host:443"
rm -f "$tmpdir/cert-tor-$i" "$tmpdir/cert-tor-$i.filtered"
[ "$verbose" = 0 ] || echo "Via $server to $host:"
TORSOCKS_CONF_FILE="$tmpdir/torsocks.conf" torify openssl s_client -no_ticket -showcerts -connect "$host" < /dev/null 2>&1 | eatdata "$tmpdir/cert-tor-$i"
egrep -v '(Session-ID|Master-Key|Start Time):' < "$tmpdir/cert-tor-$i" > "$tmpdir/cert-tor-$i.filtered"
if diff "$tmpdir/cert-tor-$i.filtered" "$tmpdir/cert-direct-$i.filtered" > /dev/null; then
echo "RESULT[$host]: $server: No real differences."
[ "$verbose" = 0 ] || diff -U100 "$tmpdir/cert-tor-$i" "$tmpdir/cert-direct-$i" || true
elif egrep '^connect:errno=' "$tmpdir/cert-tor-$i" > /dev/null; then
[ "$verbose" -lt 1 ] || diff -U100 "$tmpdir/cert-tor-$i" "$tmpdir/cert-direct-$i" || true
echo "RESULT[$host]: $server: Connect failed"
errors=$((errors | 0x02))
elif egrep '^[0-9]*:error:.*:ssl handshake failure:' "$tmpdir/cert-tor-$i" > /dev/null; then
[ "$verbose" -lt 1 ] || diff -U100 "$tmpdir/cert-tor-$i" "$tmpdir/cert-direct-$i" || true
echo "RESULT[$host]: $server: SSL Handshake failed"
errors=$((errors | 0x04))
else
echo "RESULT[$host]: $server: differences!"
[ "$verbose" = 0 ] || echo "===="
[ "$verbose" = 0 ] || echo "Diff:"
diff -U100 "$tmpdir/cert-tor-$i" "$tmpdir/cert-direct-$i" || true
errors=$((errors | 0x08))
fi
done
[ "$torserver" = "-" ] || break
done
exit "$errors"
|
