mirror of
https://github.com/bol-van/zapret.git
synced 2024-11-11 17:29:16 +05:00
blockcheck.sh
This commit is contained in:
bol-van
parent
9b99653fdf
commit
a49c5e7946
452
blockcheck.sh
Normal file
452
blockcheck.sh
Normal file
@ -0,0 +1,452 @@
|
||||
#!/bin/sh
|
||||
|
||||
EXEDIR="$(dirname "$0")"
|
||||
EXEDIR="$(cd "$EXEDIR"; pwd)"
|
||||
ZAPRET_BASE="$EXEDIR"
|
||||
|
||||
[ -n "$QNUM" ] || QNUM=59780
|
||||
[ -n "$NFQWS" ] || NFQWS="$ZAPRET_BASE/nfq/nfqws"
|
||||
[ -n "$MDIG" ] || MDIG="$ZAPRET_BASE/mdig/mdig"
|
||||
[ -n "$DESYNC_MARK" ] || DESYNC_MARK=0x40000000
|
||||
DOMAIN=rutracker.org
|
||||
CURL_MAX_TIME=5
|
||||
MIN_TTL=1
|
||||
MAX_TTL=12
|
||||
HDRTEMP=/tmp/zapret-hdr.txt
|
||||
ECHON="echo -n"
|
||||
|
||||
DNSCHECK_DNS="8.8.8.8 1.1.1.1 77.88.8.8"
|
||||
DNSCHECK_DOM="pornhub.com putinhuylo.com rutracker.org nnmclub.to protonmail.com"
|
||||
DNSCHECK_DIG1=/tmp/dig1.txt
|
||||
DNSCHECK_DIG2=/tmp/dig2.txt
|
||||
DNSCHECK_DIGS=/tmp/digs.txt
|
||||
|
||||
|
||||
exists()
|
||||
{
|
||||
which $1 >/dev/null 2>/dev/null
|
||||
}
|
||||
killwait()
|
||||
{
|
||||
# $1 - signal (-9, -2, ...)
|
||||
# $2 - pid
|
||||
kill $1 $2
|
||||
# suppress job kill message
|
||||
wait $2 2>/dev/null
|
||||
}
|
||||
|
||||
exitp()
|
||||
{
|
||||
local A
|
||||
|
||||
echo
|
||||
echo press enter to continue
|
||||
read A
|
||||
exit $1
|
||||
}
|
||||
|
||||
read_yes_no()
|
||||
{
|
||||
# $1 - default (Y/N)
|
||||
local A
|
||||
read A
|
||||
[ -z "$A" ] || ([ "$A" != "Y" ] && [ "$A" != "y" ] && [ "$A" != "N" ] && [ "$A" != "n" ]) && A=$1
|
||||
[ "$A" = "Y" ] || [ "$A" = "y" ] || [ "$A" = "1" ]
|
||||
}
|
||||
ask_yes_no()
|
||||
{
|
||||
# $1 - default (Y/N or 0/1)
|
||||
# $2 - text
|
||||
local DEFAULT=$1
|
||||
[ "$1" = "1" ] && DEFAULT=Y
|
||||
[ "$1" = "0" ] && DEFAULT=N
|
||||
[ -z "$DEFAULT" ] && DEFAULT=N
|
||||
$ECHON "$2 (default : $DEFAULT) (Y/N) ? "
|
||||
read_yes_no $DEFAULT
|
||||
}
|
||||
ask_yes_no_var()
|
||||
{
|
||||
# $1 - variable name for answer : 0/1
|
||||
# $2 - text
|
||||
local DEFAULT
|
||||
eval DEFAULT="\$$1"
|
||||
if ask_yes_no "$DEFAULT" "$2"; then
|
||||
eval $1=1
|
||||
else
|
||||
eval $1=0
|
||||
fi
|
||||
}
|
||||
|
||||
|
||||
require_root()
|
||||
{
|
||||
echo \* checking privileges
|
||||
[ $(id -u) -ne "0" ] && {
|
||||
echo root is required
|
||||
exists sudo && exec sudo "$0"
|
||||
exists su && exec su -c "$0"
|
||||
echo su or sudo not found
|
||||
exitp 2
|
||||
}
|
||||
}
|
||||
|
||||
IPT()
|
||||
{
|
||||
$IPTABLES -C "$@" >/dev/null 2>/dev/null || $IPTABLES -I "$@"
|
||||
}
|
||||
IPT_DEL()
|
||||
{
|
||||
$IPTABLES -C "$@" >/dev/null 2>/dev/null && $IPTABLES -D "$@"
|
||||
}
|
||||
|
||||
|
||||
check_system()
|
||||
{
|
||||
echo \* checking system
|
||||
|
||||
local UNAME=$(uname)
|
||||
[ "$UNAME" = "Linux" ] || {
|
||||
echo not supported
|
||||
exitp 5
|
||||
}
|
||||
}
|
||||
|
||||
check_prerequisites()
|
||||
{
|
||||
echo \* checking prerequisites
|
||||
|
||||
[ -x "$NFQWS" ] && [ -x "$MDIG" ] || {
|
||||
echo $NFQWS or $MDIG is not available. run $ZAPRET_BASE/install_bin.sh
|
||||
exitp 6
|
||||
}
|
||||
|
||||
for prog in iptables ip6tables curl; do
|
||||
exists $prog || {
|
||||
echo $prog does not exist. please install
|
||||
exitp 6
|
||||
}
|
||||
done
|
||||
}
|
||||
|
||||
|
||||
hdrfile_http_code()
|
||||
{
|
||||
# $1 - hdr file
|
||||
sed -nre '1,1 s/^HTTP\/1\.[0,1] ([0-9]+) .*$/\1/p' "$1"
|
||||
}
|
||||
hdrfile_location()
|
||||
{
|
||||
# $1 - hdr file
|
||||
|
||||
# some DPIs return CRLF line ending
|
||||
tr -d '\015' <"$1" | sed -nre 's/^[L|l][O|o][C|c][A|a][T|t][I|i][O|o][N|n]:[ \t]*([^ \t]*)[ \t]*$/\1/p'
|
||||
}
|
||||
curl_test_http()
|
||||
{
|
||||
# $1 - ip version : 4/6
|
||||
# $2 - domain name
|
||||
local code loc
|
||||
curl -${1}SsD "$HDRTEMP" --max-time $CURL_MAX_TIME $CURL_OPT "http://$2" -o /dev/null 2>&1 || {
|
||||
code=$?
|
||||
rm -f "$HDRTEMP"
|
||||
return $code
|
||||
}
|
||||
code=$(hdrfile_http_code "$HDRTEMP")
|
||||
[ "$code" = 301 -o "$code" = 302 -o "$code" = 307 -o "$code" = 308 ] && {
|
||||
loc=$(hdrfile_location "$HDRTEMP")
|
||||
[ "${loc#*$2}" = "$loc" ] && {
|
||||
echo suspicious redirection to : $loc
|
||||
rm -f "$HDRTEMP"
|
||||
return 254
|
||||
}
|
||||
}
|
||||
rm -f "$HDRTEMP"
|
||||
return 0
|
||||
}
|
||||
curl_test_https()
|
||||
{
|
||||
# $1 - ip version : 4/6
|
||||
# $2 - domain name
|
||||
|
||||
# prevent using QUIC if available in curl
|
||||
curl -${1}Ss --max-time $CURL_MAX_TIME $CURL_OPT --http1.1 "https://$2" -o /dev/null 2>&1
|
||||
}
|
||||
|
||||
nfqws_ipt_prepare()
|
||||
{
|
||||
# $1 - port
|
||||
IPT POSTROUTING -t mangle -p tcp --dport $1 -m mark ! --mark $DESYNC_MARK/$DESYNC_MARK -j NFQUEUE --queue-num $QNUM
|
||||
}
|
||||
nfqws_ipt_unprepare()
|
||||
{
|
||||
# $1 - port
|
||||
IPT_DEL POSTROUTING -t mangle -p tcp --dport $1 -m mark ! --mark $DESYNC_MARK/$DESYNC_MARK -j NFQUEUE --queue-num $QNUM
|
||||
}
|
||||
nfqws_start()
|
||||
{
|
||||
"$NFQWS" --dpi-desync-fwmark=$DESYNC_MARK --qnum=$QNUM "$@" >/dev/null &
|
||||
}
|
||||
|
||||
curl_test()
|
||||
{
|
||||
# $1 - test function
|
||||
# $2 - domain
|
||||
$1 $IPV $2 && {
|
||||
echo '!!!!! AVAILABLE !!!!!'
|
||||
return 0
|
||||
}
|
||||
local code=$?
|
||||
if [ $code = 254 ]; then
|
||||
echo UNAVAILABLE
|
||||
else
|
||||
echo UNAVAILABLE code=$code
|
||||
fi
|
||||
return $code
|
||||
}
|
||||
nfqws_curl_test()
|
||||
{
|
||||
# $1 - test function
|
||||
# $2 - domain
|
||||
# $3,$4,$5, ... - nfqws params
|
||||
local code pid testf=$1 dom=$2
|
||||
shift
|
||||
shift
|
||||
echo - checking nfqws "$@"
|
||||
nfqws_start "$@"
|
||||
pid=$!
|
||||
curl_test $testf $dom
|
||||
code=$?
|
||||
killwait -9 $pid
|
||||
return $code
|
||||
}
|
||||
check_domain_bypass()
|
||||
{
|
||||
# $1 - test function
|
||||
# $2 - domain
|
||||
|
||||
local pid strategy tests='fake'
|
||||
|
||||
if nfqws_curl_test $1 $2 --dpi-desync=split2; then
|
||||
strategy='--dpi-desync=split2'
|
||||
else
|
||||
tests="$tests split fake,split"
|
||||
fi
|
||||
if nfqws_curl_test $1 $2 --dpi-desync=disorder2; then
|
||||
[ -n "$strategy" ] || strategy='--dpi-desync=disorder2'
|
||||
else
|
||||
tests="$tests disorder fake,disorder"
|
||||
fi
|
||||
|
||||
local ttls=$(seq -s ' ' $MIN_TTL $MAX_TTL)
|
||||
for desync in $tests; do
|
||||
for ttl in $ttls; do
|
||||
nfqws_curl_test $1 $2 --dpi-desync=$desync --dpi-desync-ttl=$ttl && {
|
||||
[ -n "$strategy" ] || strategy="--dpi-desync=$desync --dpi-desync-ttl=$ttl"
|
||||
break
|
||||
}
|
||||
done
|
||||
done
|
||||
|
||||
echo
|
||||
if [ -n "$strategy" ]; then
|
||||
echo "!!!!! working strategy found : nfqws $strategy !!!!!"
|
||||
return 0
|
||||
else
|
||||
echo 'working strategy not found'
|
||||
return 1
|
||||
fi
|
||||
}
|
||||
|
||||
check_domain()
|
||||
{
|
||||
# $1 - test function
|
||||
# $2 - port
|
||||
# $3 - domain
|
||||
|
||||
echo
|
||||
echo \* $1 $3
|
||||
|
||||
# in case was interrupted before
|
||||
nfqws_ipt_unprepare $2
|
||||
killall nfqws 2>/dev/null
|
||||
|
||||
echo "- checking without DPI bypass"
|
||||
curl_test $1 $3 && return 0
|
||||
|
||||
echo preparing nfqws redirection
|
||||
nfqws_ipt_prepare $2
|
||||
|
||||
check_domain_bypass $1 $3
|
||||
|
||||
echo clearing nfqws redirection
|
||||
nfqws_ipt_unprepare $2
|
||||
}
|
||||
check_domain_http()
|
||||
{
|
||||
# $1 - domain
|
||||
check_domain curl_test_http 80 $1
|
||||
}
|
||||
check_domain_https()
|
||||
{
|
||||
# $1 - domain
|
||||
check_domain curl_test_https 443 $1
|
||||
}
|
||||
|
||||
ask_params()
|
||||
{
|
||||
echo
|
||||
echo NOTE ! this test should be run with zapret or any other bypass software disabled, without VPN
|
||||
echo NOTE ! this test will kill all nfqws processes. if you have already set up zapret you will need to restart it after test is complete.
|
||||
|
||||
$ECHON "test this domain [ $DOMAIN ] : "
|
||||
local dom
|
||||
read dom
|
||||
[ -n "$dom" ] && DOMAIN=$dom
|
||||
|
||||
$ECHON "ip protocol version [ 4 ] : "
|
||||
read IPV
|
||||
[ -n "$IPV" ] || IPV=4
|
||||
[ "$IPV" = 4 -o "$IPV" = 6 ] || {
|
||||
echo invalid ip version. should be 4 or 6.
|
||||
exitp 1
|
||||
}
|
||||
IPTABLES=iptables
|
||||
[ "$IPV" = 6 ] && IPTABLES=ip6tables
|
||||
|
||||
ENABLE_HTTP=1
|
||||
ask_yes_no_var ENABLE_HTTP "check http"
|
||||
|
||||
ENABLE_HTTPS=1
|
||||
ask_yes_no_var ENABLE_HTTPS "check https"
|
||||
|
||||
IGNORE_CA=0
|
||||
CURL_OPT=
|
||||
[ "$ENABLE_HTTPS" = "1" ] && {
|
||||
echo on limited systems like openwrt CA certificates might not be installed to preserve space
|
||||
echo in such a case curl cannot verify server certificate and you should either install ca-bundle or disable verification
|
||||
echo however disabling verification will break https check if ISP does MitM attack and substitutes server certificate
|
||||
ask_yes_no_var IGNORE_CA "do not verify server certificate"
|
||||
[ "$IGNORE_CA" = 1 ] && CURL_OPT=-k
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
|
||||
pingtest()
|
||||
{
|
||||
ping -c 1 -W 1 $1 >/dev/null
|
||||
}
|
||||
dnstest()
|
||||
{
|
||||
# $1 - dns server. empty for system resolver
|
||||
nslookup w3.org $1 >/dev/null 2>/dev/null
|
||||
}
|
||||
find_working_public_dns()
|
||||
{
|
||||
for dns in $DNSCHECK_DNS; do
|
||||
pingtest $dns && dnstest $dns && {
|
||||
PUBDNS=$dns
|
||||
return 0
|
||||
}
|
||||
done
|
||||
return 1
|
||||
}
|
||||
check_dns_spoof()
|
||||
{
|
||||
# $1 - domain
|
||||
# $2 - public DNS
|
||||
echo $1 | "$EXEDIR/mdig/mdig" --family=4 >"$DNSCHECK_DIG1"
|
||||
nslookup $1 $2 | sed -n '/Name:/,$p' | grep ^Address | grep -oE '([0-9]{1,3}\.){3}[0-9]{1,3}' >"$DNSCHECK_DIG2"
|
||||
# check whether system resolver returns anything other than public DNS
|
||||
grep -qvFf "$DNSCHECK_DIG2" "$DNSCHECK_DIG1"
|
||||
}
|
||||
check_dns_cleanup()
|
||||
{
|
||||
rm -f "$DNSCHECK_DIG1" "$DNSCHECK_DIG2" "$DNSCHECK_DIGS" 2>/dev/null
|
||||
}
|
||||
check_dns()
|
||||
{
|
||||
local C1 C2
|
||||
|
||||
echo \* checking DNS
|
||||
|
||||
[ -f "$DNSCHECK_DIGS" ] && rm -f "$DNSCHECK_DIGS"
|
||||
|
||||
dnstest || {
|
||||
echo -- DNS is not working. It's either misconfigured or blocked or you don't have inet access.
|
||||
return 1
|
||||
}
|
||||
echo system DNS is working
|
||||
|
||||
if find_working_public_dns ; then
|
||||
echo comparing system resolver to public DNS : $PUBDNS
|
||||
for dom in $DNSCHECK_DOM; do
|
||||
if check_dns_spoof $dom $PUBDNS ; then
|
||||
echo $dom : MISMATCH
|
||||
echo -- system resolver :
|
||||
cat "$DNSCHECK_DIG1"
|
||||
echo -- $PUBDNS :
|
||||
cat "$DNSCHECK_DIG2"
|
||||
check_dns_cleanup
|
||||
echo -- POSSIBLE DNS HIJACK DETECTED. ZAPRET WILL NOT HELP YOU IN CASE DNS IS SPOOFED !!!
|
||||
echo -- DNS CHANGE OR DNSCRYPT MAY BE REQUIRED
|
||||
return 1
|
||||
else
|
||||
echo $dom : OK
|
||||
cat "$DNSCHECK_DIG1" >>"$DNSCHECK_DIGS"
|
||||
fi
|
||||
done
|
||||
else
|
||||
echo no working public DNS was found. looks like public DNS blocked.
|
||||
for dom in $DNSCHECK_DOM; do echo $dom; done | "$EXEDIR/mdig/mdig" --threads=10 --family=4 >"$DNSCHECK_DIGS"
|
||||
fi
|
||||
|
||||
echo checking resolved IP uniqueness for : $DNSCHECK_DOM
|
||||
echo censor\'s DNS can return equal result for multiple blocked domains.
|
||||
C1=$(wc -l <"$DNSCHECK_DIGS")
|
||||
C2=$(sort -u "$DNSCHECK_DIGS" | wc -l)
|
||||
[ "$C1" -eq 0 ] &&
|
||||
{
|
||||
echo -- DNS is not working. It's either misconfigured or blocked or you don't have inet access.
|
||||
check_dns_cleanup
|
||||
return 1
|
||||
}
|
||||
[ "$C1" = "$C2" ] ||
|
||||
{
|
||||
echo system dns resolver has returned equal IPs for some domains checked above \($C1 total, $C2 unique\)
|
||||
echo non-unique IPs :
|
||||
sort "$DNSCHECK_DIGS" | uniq -d
|
||||
echo -- POSSIBLE DNS HIJACK DETECTED. ZAPRET WILL NOT HELP YOU IN CASE DNS IS SPOOFED !!!
|
||||
echo -- DNSCRYPT MAY BE REQUIRED
|
||||
check_dns_cleanup
|
||||
return 1
|
||||
}
|
||||
echo all resolved IPs are unique
|
||||
echo -- DNS looks good
|
||||
echo -- NOTE this check is Russia targeted. In your country other domains may be blocked.
|
||||
check_dns_cleanup
|
||||
return 0
|
||||
}
|
||||
|
||||
|
||||
sigint()
|
||||
{
|
||||
# make sure we are not in a middle state that impacts connectivity
|
||||
echo
|
||||
echo terminating...
|
||||
nfqws_ipt_unprepare 80
|
||||
nfqws_ipt_unprepare 443
|
||||
killall nfqws 2>/dev/null
|
||||
exit 1
|
||||
}
|
||||
|
||||
trap 'sigint' 2
|
||||
|
||||
check_system
|
||||
check_prerequisites
|
||||
require_root
|
||||
check_dns
|
||||
ask_params
|
||||
|
||||
[ "$ENABLE_HTTP" = 1 ] && check_domain_http $DOMAIN
|
||||
[ "$ENABLE_HTTPS" = 1 ] && check_domain_https $DOMAIN
|
||||
@ -202,3 +202,7 @@ init scripts : openwrt uses now OPENWRT_LAN parameter to override incoming inter
|
||||
v41
|
||||
|
||||
install_easy : openrc support
|
||||
|
||||
v42
|
||||
|
||||
blockcheck.sh
|
||||
|
||||
@ -1,4 +1,4 @@
|
||||
zapret v.41
|
||||
zapret v.42
|
||||
|
||||
English
|
||||
-------
|
||||
@ -711,14 +711,12 @@ tpws и nfqws решают нужно ли применять дурение в
|
||||
Перед настройкой нужно провести исследование какую бяку устроил вам ваш провайдер.
|
||||
|
||||
Нужно выяснить не подменяет ли он DNS и какой метод обхода DPI работает.
|
||||
В этом вам поможет скрипт https://github.com/ValdikSS/blockcheck.
|
||||
В этом вам поможет скрипт blockcheck.sh.
|
||||
|
||||
Если DNS подменяется, но провайдер не перехватывает обращения к сторонним DNS, поменяйте DNS на публичный.
|
||||
Например : 8.8.8.8, 8.8.4.4, 1.1.1.1, 1.0.0.1, 9.9.9.9
|
||||
Если DNS подменяется и провайдер перехватывает обращения к сторонним DNS, настройте dnscrypt.
|
||||
|
||||
Если blockcheck не определил рабочие методы обхода, попробуйте атаку десинхронизации с различными параметрами.
|
||||
|
||||
Проанализируйте какие методы дурения DPI работают, в соответствии с ними настройте /opt/zapret/config.
|
||||
|
||||
|
||||
|
||||
Loading…
Reference in New Issue
Block a user