github-mirror/zapret
1
0
Fork 0
mirror of https://github.com/bol-van/zapret.git synced 2026-03-11 07:41:52 +00:00
Code Issues Packages Projects Releases Wiki Activity

history purge

Browse Source
This commit is contained in:
bol-van
2021-03-04 14:30:38 +03:00
commit 3703918a4b
179 changed files with 22082 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

401
init.d/macos/functions Normal file
View File

@@ -0,0 +1,401 @@
[ -n "$ZAPRET_BASE" ] || ZAPRET_BASE=/opt/zapret
IPSET_DIR=$ZAPRET_BASE/ipset
. "$IPSET_DIR/def.sh"
HOSTLIST="$ZHOSTLIST.gz"
[ -f "$HOSTLIST" ] || HOSTLIST="$ZHOSTLIST"
[ -f "$HOSTLIST" ] || HOSTLIST="$ZUSERLIST"
PIDDIR=/var/run
TPPORT=988
TPWS_WAIT="--bind-wait-ip=60"
TPWS="$ZAPRET_BASE/tpws/tpws"
PF_MAIN="/etc/pf.conf"
PF_ANCHOR_DIR=/etc/pf.anchors
PF_ANCHOR_ZAPRET="$PF_ANCHOR_DIR/zapret"
PF_ANCHOR_ZAPRET_V4="$PF_ANCHOR_DIR/zapret-v4"
PF_ANCHOR_ZAPRET_V6="$PF_ANCHOR_DIR/zapret-v6"
[ -n "$IFACE_WAN" ] && OWAN=" on $IFACE_WAN"
on_off_function()
{
# $1 : function name on
# $2 : function name off
# $3 : 0 - off, 1 - on
local F="$1"
[ "$3" = "1" ] || F="$2"
shift
shift
shift
"$F" "$@"
}
run_daemon()
{
# $1 - daemon number : 1,2,3,...
# $2 - daemon
# $3 - daemon args
# use $PIDDIR/$DAEMONBASE$1.pid as pidfile
local DAEMONBASE="$(basename $2)"
local PIDFILE="$PIDDIR/$DAEMONBASE$1.pid"
local ARGS="--daemon --pidfile=$PIDFILE $3"
[ -f "$PIDFILE" ] && pgrep -qF "$PIDFILE" && {
echo Already running $1: $2
return 0
}
echo "Starting daemon $1: $2 $ARGS"
"$2" $ARGS
}
stop_daemon()
{
# $1 - daemon number : 1,2,3,...
# $2 - daemon
# use $PIDDIR/$DAEMONBASE$1.pid as pidfile
local PID
local DAEMONBASE="$(basename $2)"
local PIDFILE="$PIDDIR/$DAEMONBASE$1.pid"
[ -f "$PIDFILE" ] && read PID <"$PIDFILE"
[ -n "$PID" ] && {
echo "Stopping daemon $1: $2 (PID=$PID)"
kill $PID
rm -f "$PIDFILE"
}
return 0
}
do_daemon()
{
# $1 - 1 - run, 0 - stop
on_off_function run_daemon stop_daemon "$@"
}
filter_apply_hostlist_target()
{
# $1 - var name of tpws or nfqws params
[ "$MODE_FILTER" = "hostlist" ] && eval $1="\"\$$1 --hostlist=$HOSTLIST\""
}
tpws_apply_binds()
{
local o
[ "$DISABLE_IPV4" = "1" ] || o="--bind-addr=127.0.0.1"
[ "$DISABLE_IPV6" = "1" ] || {
for i in lo0 $IFACE_LAN; do
o="$o --bind-iface6=$i --bind-linklocal=force $TPWS_WAIT"
done
}
eval $1="\"\$$1 $o\""
}
wait_interface_ll()
{
echo waiting for an ipv6 link local address on $1 ...
"$TPWS" --bind-wait-only --bind-iface6=$1 --bind-linklocal=force $TPWS_WAIT
}
wait_lan_ll()
{
[ "$DISABLE_IPV6" != "1" ] && [ -n "$IFACE_LAN" ] && {
wait_interface_ll $IFACE_LAN >&2 || {
echo "wait interface failed"
return 1
}
}
return 0
}
get_ipv6_linklocal()
{
ifconfig $1 | sed -nEe 's/^.*inet6 (fe80:[a-f0-9:]+).*/\1/p'
}
pf_anchor_root_reload()
{
echo reloading PF root anchor
pfctl -qf "$PF_MAIN"
}
pf_anchor_root()
{
local patch
[ -f "$PF_MAIN" ] && {
grep -q '^rdr-anchor "zapret"$' "$PF_MAIN" || {
echo patching rdr-anchor in $PF_MAIN
patch=1
sed -i '' -e '/^rdr-anchor "com\.apple\/\*"$/i \
rdr-anchor "zapret"
' $PF_MAIN
}
grep -q '^anchor "zapret"$' "$PF_MAIN" || {
echo patching anchor in $PF_MAIN
patch=1
sed -i '' -e '/^anchor "com\.apple\/\*"$/i \
anchor "zapret"
' $PF_MAIN
}
grep -q "^set limit table-entries" "$PF_MAIN" || {
echo patching table-entries limit
patch=1
sed -i '' -e '/^scrub-anchor "com\.apple\/\*"$/i \
set limit table-entries 5000000
' $PF_MAIN
}
grep -q '^anchor "zapret"$' "$PF_MAIN" &&
grep -q '^rdr-anchor "zapret"$' "$PF_MAIN" &&
grep -q '^set limit table-entries' "$PF_MAIN" && {
if [ -n "$patch" ]; then
echo successfully patched $PF_MAIN
pf_anchor_root_reload
else
echo successfully checked zapret anchors in $PF_MAIN
fi
return 0
}
}
echo ----------------------------------
echo Automatic $PF_MAIN patching failed. You must apply root anchors manually in your PF config.
echo rdr-anchor \"zapret\"
echo anchor \"zapret\"
echo ----------------------------------
return 1
}
pf_anchor_root_del()
{
sed -i '' -e '/^anchor "zapret"$/d' -e '/^rdr-anchor "zapret"$/d' -e '/^set limit table-entries/d' "$PF_MAIN"
}
pf_anchor_zapret()
{
[ "$DISABLE_IPV4" = "1" ] || {
if [ -f "$ZIPLIST_EXCLUDE" ]; then
echo "table <nozapret> persist file \"$ZIPLIST_EXCLUDE\""
else
echo "table <nozapret> persist"
fi
}
[ "$DISABLE_IPV4" = "1" ] || {
if [ -f "$ZIPLIST_EXCLUDE6" ]; then
echo "table <nozapret6> persist file \"$ZIPLIST_EXCLUDE6\""
else
echo "table <nozapret6> persist"
fi
}
echo
[ "$DISABLE_IPV4" = "1" ] || echo "rdr-anchor \"/zapret-v4\" inet to !<nozapret>"
[ "$DISABLE_IPV6" = "1" ] || echo "rdr-anchor \"/zapret-v6\" inet6 to !<nozapret6>"
[ "$DISABLE_IPV4" = "1" ] || echo "anchor \"/zapret-v4\" inet to !<nozapret>"
[ "$DISABLE_IPV6" = "1" ] || echo "anchor \"/zapret-v6\" inet6 to !<nozapret6>"
}
pf_anchor_zapret_tables()
{
# $1 - variable to receive applied table names
# $2/$3 $4/$5 ... table_name/table_file
local tblv=$1
local _tbl
shift
[ "$MODE_FILTER" = "ipset" ] &&
{
while [ -n "$1" ] && [ -n "$2" ] ; do
[ -f "$2" ] && {
echo "table <$1> file \"$2\""
_tbl="$_tbl<$1> "
}
shift
shift
done
}
[ -n "$_tbl" ] || _tbl="any"
eval $tblv="\"\$_tbl\""
}
pf_anchor_port_target()
{
if [ "$MODE_HTTP" = "1" ] && [ "$MODE_HTTPS" = "1" ]; then
echo "{80,443}"
elif [ "$MODE_HTTPS" = "1" ]; then
echo "443"
elif [ "$MODE_HTTP" = "1" ]; then
echo "80"
fi
}
pf_anchor_zapret_v4()
{
local tbl port
[ "$DISABLE_IPV4" = "1" ] || {
[ ! "$MODE_HTTP" = "1" ] && [ ! "$MODE_HTTPS" = "1" ] && return
pf_anchor_zapret_tables tbl zapret-user "$ZIPLIST_USER" zapret "$ZIPLIST"
port=$(pf_anchor_port_target)
for t in $tbl; do
[ -n "$IFACE_LAN" ] && echo "rdr on $IFACE_LAN inet proto tcp from any to $t port $port -> 127.0.0.1 port $TPPORT"
done
echo "rdr on lo0 inet proto tcp from !127.0.0.0/8 to any port $port -> 127.0.0.1 port $TPPORT"
for t in $tbl; do
echo "pass out$OWAN route-to (lo0 127.0.0.1) inet proto tcp from !127.0.0.0/8 to $t port $port user { >root }"
done
}
}
pf_anchor_zapret_v6()
{
local tbl port LL_LAN
[ "$DISABLE_IPV6" = "1" ] || {
[ ! "$MODE_HTTP" = "1" ] && [ ! "$MODE_HTTPS" = "1" ] && return
# LAN link local is only for router
[ -n "$IFACE_LAN" ] && LL_LAN=$(get_ipv6_linklocal $IFACE_LAN)
pf_anchor_zapret_tables tbl zapret6-user "$ZIPLIST_USER6" zapret6 "$ZIPLIST6"
port=$(pf_anchor_port_target)
for t in $tbl; do
[ -n "$LL_LAN" ] && echo "rdr on $IFACE_LAN inet6 proto tcp from any to $t port $port -> $LL_LAN port $TPPORT"
done
echo "rdr on lo0 inet6 proto tcp from !::1 to any port $port -> fe80::1 port $TPPORT"
for t in $tbl; do
echo "pass out$OWAN route-to (lo0 fe80::1) inet6 proto tcp from !::1 to $t port $port user { >root }"
done
}
}
pf_anchors_create()
{
wait_lan_ll
pf_anchor_zapret >"$PF_ANCHOR_ZAPRET"
pf_anchor_zapret_v4 >"$PF_ANCHOR_ZAPRET_V4"
pf_anchor_zapret_v6 >"$PF_ANCHOR_ZAPRET_V6"
}
pf_anchors_del()
{
rm -f "$PF_ANCHOR_ZAPRET" "$PF_ANCHOR_ZAPRET_V4" "$PF_ANCHOR_ZAPRET_V6"
}
pf_anchors_load()
{
echo loading zapret anchor from "$PF_ANCHOR_ZAPRET"
pfctl -qa zapret -f "$PF_ANCHOR_ZAPRET" || {
echo error loading zapret anchor
return 1
}
if [ "$DISABLE_IPV4" = "1" ]; then
echo clearing zapret-v4 anchor
pfctl -qa zapret-v4 -F all 2>/dev/null
else
echo loading zapret-v4 anchor from "$PF_ANCHOR_ZAPRET_V4"
pfctl -qa zapret-v4 -f "$PF_ANCHOR_ZAPRET_V4" || {
echo error loading zapret-v4 anchor
return 1
}
fi
if [ "$DISABLE_IPV6" = "1" ]; then
echo clearing zapret-v6 anchor
pfctl -qa zapret-v6 -F all 2>/dev/null
else
echo loading zapret-v6 anchor from "$PF_ANCHOR_ZAPRET_V6"
pfctl -qa zapret-v6 -f "$PF_ANCHOR_ZAPRET_V6" || {
echo error loading zapret-v6 anchor
return 1
}
fi
echo successfully loaded PF anchors
return 0
}
pf_anchors_clear()
{
echo clearing zapret anchors
pfctl -qa zapret-v4 -F all 2>/dev/null
pfctl -qa zapret-v6 -F all 2>/dev/null
pfctl -qa zapret -F all 2>/dev/null
}
pf_enable()
{
echo enabling PF
pfctl -qe
}
pf_table_reload()
{
echo reloading zapret tables
[ "$DISABLE_IPV4" = "1" ] || pfctl -qTl -a zapret-v4 -f "$PF_ANCHOR_ZAPRET_V4"
[ "$DISABLE_IPV6" = "1" ] || pfctl -qTl -a zapret-v6 -f "$PF_ANCHOR_ZAPRET_V6"
pfctl -qTl -a zapret -f "$PF_ANCHOR_ZAPRET"
}
zapret_do_firewall()
{
# $1 - 1 - add, 0 - del
case "${MODE}" in
tpws)
if [ "$1" = "1" ] ; then
pf_anchor_root || return 1
pf_anchors_create
pf_anchors_load || return 1
pf_enable
else
pf_anchors_clear
fi
;;
filter)
;;
*)
echo "unsupported MODE=$MODE"
return 1
;;
esac
return 0
}
zapret_apply_firewall()
{
zapret_do_firewall 1 "$@"
}
zapret_unapply_firewall()
{
zapret_do_firewall 0 "$@"
}
zapret_restart_firewall()
{
zapret_unapply_firewall "$@"
zapret_apply_firewall "$@"
}
zapret_do_daemons()
{
# $1 - 1 - run, 0 - stop
local opt
case "${MODE}" in
tpws)
[ "$1" = "1" ] && [ "$DISABLE_IPV4" = "1" ] && [ "$DISABLE_IPV6" = "1" ] && {
echo "both ipv4 and ipv6 are disabled. nothing to do"
return 0
}
# MacOS requires root. kernel hardcoded requirement for /dev/pf ioctls
opt="--user=root --port=$TPPORT"
filter_apply_hostlist_target opt
tpws_apply_binds opt
opt="$opt $TPWS_OPT"
do_daemon $1 1 "$TPWS" "$opt"
;;
filter)
;;
*)
echo "unsupported MODE=$MODE"
return 1
;;
esac
}
zapret_run_daemons()
{
zapret_do_daemons 1 "$@"
}
zapret_stop_daemons()
{
zapret_do_daemons 0 "$@"
}
zapret_restart_daemons()
{
zapret_stop_daemons "$@"
zapret_run_daemons "$@"
}

51
init.d/macos/zapret Executable file
View File

@@ -0,0 +1,51 @@
#!/bin/sh
EXEDIR="$(dirname "$0")"
ZAPRET_BASE="$EXEDIR/../.."
ZAPRET_BASE="$(cd "$ZAPRET_BASE"; pwd)"
. "$EXEDIR/functions"
case "$1" in
start)
zapret_run_daemons
[ "$INIT_APPLY_FW" != "1" ] || zapret_apply_firewall
;;
stop)
[ "$INIT_APPLY_FW" != "1" ] || zapret_unapply_firewall
zapret_stop_daemons
;;
restart)
"$0" stop
"$0" start
;;
start-fw)
zapret_apply_firewall
;;
stop-fw)
zapret_unapply_firewall
;;
restart-fw)
zapret_restart_firewall
;;
reload-fw-tables)
pf_table_reload
;;
start-daemons)
zapret_run_daemons
;;
stop-daemons)
zapret_stop_daemons
;;
restart-daemons)
zapret_restart_daemons
;;
*)
N="$SCRIPT/$NAME"
echo "Usage: $N {start|stop|start-fw|stop-fw|restart-fw|reload-fw-tables|start-daemons|stop-daemons|restart-daemons}" >&2
exit 1
;;
esac

17
init.d/macos/zapret.plist Normal file
View File

@@ -0,0 +1,17 @@
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
<key>Label</key>
<string>zapret</string>
<key>LaunchOnlyOnce</key>
<false/>
<key>ProgramArguments</key>
<array>
<string>/opt/zapret/init.d/macos/zapret</string>
<string>start</string>
</array>
<key>RunAtLoad</key>
<true/>
</dict>
</plist>

8
init.d/openwrt/90-zapret Normal file
View File

@@ -0,0 +1,8 @@
#!/bin/sh
ZAPRET=/etc/init.d/zapret
[ -x "$ZAPRET" ] && [ "$INTERFACE" = "lan" ] && {
[ "$ACTION" = "ifup" ] && {
$ZAPRET enabled && $ZAPRET restart
}
}

20
init.d/openwrt/custom Normal file
View File

@@ -0,0 +1,20 @@
# this script contain your special code to launch daemons and configure firewall
# use helpers from "functions" file and "zapret" init script
# in case of upgrade keep this file only, do not modify others
zapret_custom_daemons()
{
# PLACEHOLDER
echo !!! NEED ATTENTION !!!
echo Start daemon\(s\)
echo Study how other sections work
run_daemon 1 /bin/sleep 20
}
zapret_custom_firewall()
{
# PLACEHOLDER
echo !!! NEED ATTENTION !!!
echo Configure iptables for required actions
echo Study how other sections work
}

44
init.d/openwrt/custom-2nfqws Normal file
View File

@@ -0,0 +1,44 @@
# this custom script demonstrates how to use 2 copies of nfqws
# it preserves config settings : MODE_HTTP, MODE_HTTP_KEEPALIVE, MODE_HTTPS, MODE_FILTER, NFQWS_OPT_DESYNC
# NFQWS_OPT_DESYNC - parameters for http
# NFQWS_OPT_DESYNC2 - parameters for https. you should add this variable to config file, its absent there
QNUM2=$(($QNUM+1))
zapret_custom_daemons()
{
local opt
[ "$MODE_HTTP" = "1" ] && {
opt="$NFQWS_OPT_BASE $NFQWS_OPT_DESYNC"
filter_apply_hostlist_target opt
run_daemon 1 $NFQWS "$opt"
}
[ "$MODE_HTTPS" = "1" ] && {
opt="$NFQWS_OPT_BASE $NFQWS_OPT_DESYNC2 --qnum=$QNUM2"
filter_apply_hostlist_target opt
run_daemon 2 $NFQWS "$opt"
}
}
zapret_custom_firewall()
{
local f4 f6
local first_packet_only="-m connbytes --connbytes-dir=original --connbytes-mode=packets --connbytes 2:4"
local desync="-m mark ! --mark $DESYNC_MARK/$DESYNC_MARK"
[ "$MODE_HTTP" = "1" ] && {
f4="--dport 80"
[ "$MODE_HTTP_KEEPALIVE" = "1" ] || f4="$f4 $first_packet_only"
f6=$f4
filter_apply_ipset_target f4 f6
fw_nfqws_post "$f4 $desync" "$f6 $desync" $QNUM
}
[ "$MODE_HTTPS" = "1" ] && {
f4="--dport 443 $first_packet_only"
f6=$f4
filter_apply_ipset_target f4 f6
fw_nfqws_post "$f4 $desync" "$f6 $desync" $QNUM2
}
}

39
init.d/openwrt/custom-tpws4http-nfqws4https Normal file
View File

@@ -0,0 +1,39 @@
# this custom script demonstrates how to apply tpws to http and nfqws to https
# it preserves config settings : MODE_HTTP, MODE_HTTPS, MODE_FILTER, TPWS_OPT, NFQWS_OPT_DESYNC
zapret_custom_daemons()
{
local opt
[ "$MODE_HTTP" = "1" ] && {
opt="$TPWS_OPT"
filter_apply_hostlist_target opt
run_tpws 1 "$opt"
}
[ "$MODE_HTTPS" = "1" ] && {
opt="$NFQWS_OPT_BASE $NFQWS_OPT_DESYNC"
filter_apply_hostlist_target opt
run_daemon 2 $NFQWS "$opt"
}
}
zapret_custom_firewall()
{
local f4 f6
local first_packet_only="-m connbytes --connbytes-dir=original --connbytes-mode=packets --connbytes 2:4"
local desync="-m mark ! --mark $DESYNC_MARK/$DESYNC_MARK"
[ "$MODE_HTTP" = "1" ] && {
f4="--dport 80"
f6=$f4
filter_apply_ipset_target f4 f6
fw_tpws "$f4" "$f6" $TPPORT
}
[ "$MODE_HTTPS" = "1" ] && {
f4="--dport 443 $first_packet_only"
f6=$f4
filter_apply_ipset_target f4 f6
fw_nfqws_post "$f4 $desync" "$f6 $desync" $QNUM
}
}

20
init.d/openwrt/custom.default Normal file
View File

@@ -0,0 +1,20 @@
# this script contain your special code to launch daemons and configure firewall
# use helpers from "functions" file and "zapret" init script
# in case of upgrade keep this file only, do not modify others
zapret_custom_daemons()
{
# PLACEHOLDER
echo !!! NEED ATTENTION !!!
echo Start daemon\(s\)
echo Study how other sections work
run_daemon 1 /bin/sleep 20
}
zapret_custom_firewall()
{
# PLACEHOLDER
echo !!! NEED ATTENTION !!!
echo Configure iptables for required actions
echo Study how other sections work
}

11
init.d/openwrt/firewall.zapret Normal file
View File

@@ -0,0 +1,11 @@
SCRIPT=$(readlink /etc/init.d/zapret)
if [ -n "$SCRIPT" ]; then
EXEDIR=$(dirname "$SCRIPT")
ZAPRET_BASE=$(readlink -f "$EXEDIR/../..")
else
ZAPRET_BASE=/opt/zapret
fi
. "$ZAPRET_BASE/init.d/openwrt/functions"
zapret_apply_firewall

425
init.d/openwrt/functions Normal file
View File

@@ -0,0 +1,425 @@
. /lib/functions/network.sh
[ -n "$ZAPRET_BASE" ] || ZAPRET_BASE=/opt/zapret
. "$ZAPRET_BASE/config"
QNUM=200
TPPORT=988
TPWS_USER=daemon
TPWS_LOCALHOST4=127.0.0.127
[ -n "$DESYNC_MARK" ] || DESYNC_MARK=0x40000000
# max wait time for the link local ipv6 on the LAN interface
LINKLOCAL_WAIT_SEC=5
IPSET_CR="$ZAPRET_BASE/ipset/create_ipset.sh"
CUSTOM_SCRIPT="$ZAPRET_BASE/init.d/openwrt/custom"
[ -f "$CUSTOM_SCRIPT" ] && . "$CUSTOM_SCRIPT"
IPSET_EXCLUDE="-m set ! --match-set nozapret"
IPSET_EXCLUDE6="-m set ! --match-set nozapret6"
exists()
{
which "$1" >/dev/null 2>/dev/null
}
existf()
{
type "$1" >/dev/null 2>/dev/null
}
# can be multiple ipv6 outgoing interfaces
# uplink from isp, tunnelbroker, vpn, ...
# want them all. who knows what's the real one that blocks sites
# dont want any manual configuration - want to do it automatically
# standard network_find_wan[6] return only the first
# we use low level function from network.sh to avoid this limitation
# it can change theoretically and stop working
network_find_wan_all()
{
__network_ifstatus "$1" "" "[@.route[@.target='0.0.0.0' && !@.table]].interface" "" 10 2>/dev/null && return
network_find_wan $1
}
network_find_wan6_all()
{
__network_ifstatus "$1" "" "[@.route[@.target='::' && !@.table]].interface" "" 10 2>/dev/null && return
network_find_wan6 $1
}
ipt()
{
iptables -C "$@" 2>/dev/null || iptables -I "$@"
}
ipt_del()
{
iptables -C "$@" 2>/dev/null && iptables -D "$@"
}
ipt6()
{
ip6tables -C "$@" 2>/dev/null || ip6tables -I "$@"
}
ipt6_del()
{
ip6tables -C "$@" 2>/dev/null && ip6tables -D "$@"
}
# there's no route_localnet for ipv6
# the best we can is to route to link local of the incoming interface
# OUTPUT - can DNAT to ::1
# PREROUTING - can't DNAT to ::1. can DNAT to link local of -i interface or to any global addr
# not a good idea to expose tpws to the world (bind to ::)
get_ipv6_linklocal()
{
# $1 - interface name. if empty - any interface
if exists ip ; then
local dev
[ -n "$1" ] && dev="dev $1"
ip addr show $dev | sed -e 's/^.*inet6 \([^ ]*\)\/[0-9]* scope link.*$/\1/;t;d' | head -n 1
else
ifconfig $1 | sed -re 's/^.*inet6 addr: ([^ ]*)\/[0-9]* Scope:Link.*$/\1/;t;d' | head -n 1
fi
}
get_ipv6_global()
{
# $1 - interface name. if empty - any interface
if exists ip ; then
local dev
[ -n "$1" ] && dev="dev $1"
ip addr show $dev | sed -e 's/^.*inet6 \([^ ]*\)\/[0-9]* scope global.*$/\1/;t;d' | head -n 1
else
ifconfig $1 | sed -re 's/^.*inet6 addr: ([^ ]*)\/[0-9]* Scope:Global.*$/\1/;t;d' | head -n 1
fi
}
dnat6_target()
{
# get target ip address for DNAT. prefer link locals
# tpws should be as inaccessible from outside as possible
# link local address can appear not immediately after ifup
# DNAT6_TARGET=- means attempt was made but address was not found (to avoid multiple re-attempts)
[ -n "$DNAT6_TARGET" ] || {
# no reason to query if its down
network_is_up lan || return
local DEVICE
network_get_device DEVICE lan
local ct=0
while
DNAT6_TARGET=$(get_ipv6_linklocal $DEVICE)
[ -n "$DNAT6_TARGET" ] && break
[ "$ct" -ge "$LINKLOCAL_WAIT_SEC" ] && break
echo waiting for the link local for another $(($LINKLOCAL_WAIT_SEC - $ct)) seconds ...
ct=$(($ct+1))
sleep 1
do :; done
[ -n "$DNAT6_TARGET" ] || {
echo no link local. getting global
DNAT6_TARGET=$(get_ipv6_global $DEVICE)
[ -n "$DNAT6_TARGET" ] || {
echo could not get any address
DNAT6_TARGET=-
}
}
}
}
fw_nfqws_pre4()
{
# $1 - filter ipv4
# $2 - queue number
local DEVICE wan_iface
[ "$DISABLE_IPV4" = "1" ] || {
network_find_wan_all wan_iface
for ext_iface in $wan_iface; do
network_get_device DEVICE $ext_iface
ipt PREROUTING -t mangle -i $DEVICE -p tcp $1 $IPSET_EXCLUDE src -j NFQUEUE --queue-num $2 --queue-bypass
done
}
}
fw_nfqws_pre6()
{
# $1 - filter ipv6
# $2 - queue number
local DEVICE wan_iface
[ "$DISABLE_IPV6" = "1" ] || {
network_find_wan6_all wan_iface
for ext_iface in $wan_iface; do
network_get_device DEVICE $ext_iface
ipt6 PREROUTING -t mangle -i $DEVICE -p tcp $1 $IPSET_EXCLUDE6 src -j NFQUEUE --queue-num $2 --queue-bypass
done
}
}
fw_nfqws_pre()
{
# $1 - filter ipv4
# $2 - filter ipv6
# $3 - queue number
fw_nfqws_pre4 "$1" $3
fw_nfqws_pre6 "$2" $3
}
fw_nfqws_post4()
{
# $1 - filter ipv4
# $2 - queue number
local DEVICE wan_iface
[ "$DISABLE_IPV4" = "1" ] || {
network_find_wan_all wan_iface
for ext_iface in $wan_iface; do
network_get_device DEVICE $ext_iface
ipt POSTROUTING -t mangle -o $DEVICE -p tcp $1 $IPSET_EXCLUDE dst -j NFQUEUE --queue-num $2 --queue-bypass
done
}
}
fw_nfqws_post6()
{
# $1 - filter ipv6
# $2 - queue number
local DEVICE wan_iface
[ "$DISABLE_IPV6" = "1" ] || {
network_find_wan6_all wan_iface
for ext_iface in $wan_iface; do
network_get_device DEVICE $ext_iface
ipt6 POSTROUTING -t mangle -o $DEVICE -p tcp $1 $IPSET_EXCLUDE6 dst -j NFQUEUE --queue-num $2 --queue-bypass
done
}
}
fw_nfqws_post()
{
# $1 - filter ipv4
# $2 - filter ipv6
# $3 - queue number
fw_nfqws_post4 "$1" $3
fw_nfqws_post6 "$2" $3
}
IPT_OWNER="-m owner ! --uid-owner $TPWS_USER"
fw_tpws4()
{
# $1 - filter ipv6
# $2 - tpws port
local DEVICE wan_iface
[ "$DISABLE_IPV4" = "1" ] || {
network_find_wan_all wan_iface
for ext_iface in $wan_iface; do
network_get_device DEVICE $ext_iface
ipt OUTPUT -t nat -o $DEVICE $IPT_OWNER -p tcp $1 $IPSET_EXCLUDE dst -j DNAT --to $TPWS_LOCALHOST4:$2
done
ipt prerouting_lan_rule -t nat -p tcp $1 $IPSET_EXCLUDE dst -j DNAT --to $TPWS_LOCALHOST4:$2
network_get_device DEVICE lan
[ -n "$DEVICE" ] && {
# allow localnet route only to special tpws IP
iptables -N input_lan_rule_zapret 2>/dev/null
ipt input_lan_rule_zapret -d 127.0.0.0/8 -j DROP
ipt input_lan_rule_zapret -d $TPWS_LOCALHOST4 -j RETURN
ipt input_lan_rule -j input_lan_rule_zapret
sysctl -qw net.ipv4.conf.$DEVICE.route_localnet=1
}
}
}
fw_tpws6()
{
# $1 - filter ipv6
# $2 - tpws port
local DEVICE wan_iface
[ "$DISABLE_IPV6" = "1" ] || {
network_find_wan6_all wan_iface
for ext_iface in $wan_iface; do
network_get_device DEVICE $ext_iface
ipt6 OUTPUT -t nat -o $DEVICE $IPT_OWNER -p tcp $1 $IPSET_EXCLUDE6 dst -j DNAT --to [::1]:$2
done
network_get_device DEVICE lan
dnat6_target
[ "$DNAT6_TARGET" != "-" ] && ipt6 PREROUTING -t nat -i $DEVICE -p tcp $1 $IPSET_EXCLUDE6 dst -j DNAT --to [$DNAT6_TARGET]:$2
}
}
fw_tpws()
{
# $1 - filter ipv4
# $2 - filter ipv6
# $3 - tpws port
fw_tpws4 "$1" $3
fw_tpws6 "$2" $3
}
filter_apply_port_target()
{
# $1 - var name of iptables filter
local f
if [ "$MODE_HTTP" = "1" ] && [ "$MODE_HTTPS" = "1" ]; then
f="-m multiport --dports 80,443"
elif [ "$MODE_HTTPS" = "1" ]; then
f="--dport 443"
elif [ "$MODE_HTTP" = "1" ]; then
f="--dport 80"
else
echo WARNING !!! HTTP and HTTPS are both disabled
fi
eval $1="\"\$$1 $f\""
}
filter_apply_ipset_target()
{
# $1 - var name of ipv4 iptables filter
# $2 - var name of ipv6 iptables filter
if [ "$MODE_FILTER" = "ipset" ]; then
eval $1="\"\$$1 -m set --match-set zapret dst\""
eval $2="\"\$$2 -m set --match-set zapret6 dst\""
fi
}
create_ipset()
{
echo "Creating ipset"
"$IPSET_CR" "$@"
}
is_flow_offload_avail()
{
# $1 = '' for ipv4, '6' for ipv6
grep -q FLOWOFFLOAD /proc/net/ip$1_tables_targets
}
list_nfqws_rules()
{
# $1 = '' for ipv4, '6' for ipv6
ip$1tables -S POSTROUTING -t mangle | grep "NFQUEUE --queue-num $QNUM --queue-bypass" | sed -re 's/^-A POSTROUTING (.*) -j NFQUEUE.*$/\1/' -e "s/-m mark ! --mark $DESYNC_MARK\/$DESYNC_MARK//"
}
reverse_nfqws_rule()
{
sed -e 's/-o /-i /' -e 's/--dport /--sport /' -e 's/--dports /--sports /' -e 's/ dst$/ src/' -e 's/ dst / src /'
}
apply_flow_offloading_enable_rule()
{
# $1 = '' for ipv4, '6' for ipv6
local i off='-j FLOWOFFLOAD'
[ "$FLOWOFFLOAD" = "hardware" ] && off="$off --hw"
i="forwarding_rule_zapret -m comment --comment zapret_traffic_offloading_enable -m conntrack --ctstate RELATED,ESTABLISHED $off"
echo enabling ipv${1:-4} flow offloading : $i
ip$1tables -A $i
}
apply_flow_offloading_exempt_rule()
{
# $1 = '' for ipv4, '6' for ipv6
local i v
v=$1
shift
i="forwarding_rule_zapret $@ -m comment --comment zapret_traffic_offloading_exemption -j RETURN"
echo applying ipv${v:-4} flow offloading exemption : $i
ip${v}tables -A $i
}
flow_offloading_exempt_v()
{
# $1 = '' for ipv4, '6' for ipv6
is_flow_offload_avail $1 || return 0
ipt$1_del forwarding_rule -j forwarding_rule_zapret
ip$1tables -F forwarding_rule_zapret 2>/dev/null
ip$1tables -X forwarding_rule_zapret 2>/dev/null
[ "$FLOWOFFLOAD" = 'software' -o "$FLOWOFFLOAD" = 'hardware' ] && {
ip$1tables -N forwarding_rule_zapret
list_nfqws_rules $1 |
while read rule; do
apply_flow_offloading_exempt_rule "$1" $rule
done
list_nfqws_rules $1 | grep -v "connbytes" | reverse_nfqws_rule |
while read rule; do
apply_flow_offloading_exempt_rule "$1" $rule
done
apply_flow_offloading_enable_rule $1
ipt$1 forwarding_rule -j forwarding_rule_zapret
}
return 0
}
flow_offloading_exempt()
{
[ "$DISABLE_IPV4" = "1" ] || flow_offloading_exempt_v
[ "$DISABLE_IPV6" = "1" ] || flow_offloading_exempt_v 6
}
zapret_apply_firewall()
{
local first_packet_only="-m connbytes --connbytes-dir=original --connbytes-mode=packets --connbytes 2:4"
local desync="-m mark ! --mark $DESYNC_MARK/$DESYNC_MARK"
local f4 f6
# always create ipsets. ip_exclude ipset is required
create_ipset no-update
case "${MODE}" in
tpws)
if [ ! "$MODE_HTTP" = "1" ] && [ ! "$MODE_HTTPS" = "1" ]; then
echo both http and https are disabled. not applying redirection.
else
filter_apply_port_target f4
f6=$f4
filter_apply_ipset_target f4 f6
fw_tpws "$f4" "$f6" $TPPORT
fi
;;
nfqws)
if [ ! "$MODE_HTTP" = "1" ] && [ ! "$MODE_HTTPS" = "1" ]; then
echo both http and https are disabled. not applying redirection.
else
if [ "$MODE_HTTP_KEEPALIVE" = "1" ]; then
if [ "$MODE_HTTP" = "1" ]; then
f4="--dport 80"
f6=$f4
filter_apply_ipset_target f4 f6
fw_nfqws_post "$f4 $desync" "$f6 $desync" $QNUM
fi
if [ "$MODE_HTTPS" = "1" ]; then
f4="--dport 443 $first_packet_only"
f6=$f4
filter_apply_ipset_target f4 f6
fw_nfqws_post "$f4 $desync" "$f6 $desync" $QNUM
fi
else
filter_apply_port_target f4
f4="$f4 $first_packet_only"
f6=$f4
filter_apply_ipset_target f4 f6
fw_nfqws_post "$f4 $desync" "$f6 $desync" $QNUM
fi
fi
;;
custom)
existf zapret_custom_firewall && zapret_custom_firewall
;;
esac
flow_offloading_exempt
}

100
init.d/openwrt/zapret Executable file
View File

@@ -0,0 +1,100 @@
#!/bin/sh /etc/rc.common
USE_PROCD=1
# after network
START=21
SCRIPT=$(readlink /etc/init.d/zapret)
if [ -n "$SCRIPT" ]; then
EXEDIR=$(dirname "$SCRIPT")
ZAPRET_BASE=$(readlink -f "$EXEDIR/../..")
else
ZAPRET_BASE=/opt/zapret
fi
. "$ZAPRET_BASE/init.d/openwrt/functions"
# !!!!! in openwrt firewall rules are configured separately
PIDDIR=/var/run
QNUM=200
NFQWS_USER=daemon
NFQWS="$ZAPRET_BASE/nfq/nfqws"
NFQWS_OPT_BASE="--qnum=$QNUM --user=$NFQWS_USER"
TPWS_USER=daemon
TPPORT=988
TPWS="$ZAPRET_BASE/tpws/tpws"
TPWS_LOCALHOST4=127.0.0.127
HOSTLIST="$ZAPRET_BASE/ipset/zapret-hosts.txt.gz"
[ -f "$HOSTLIST" ] || HOSTLIST="$ZAPRET_BASE/ipset/zapret-hosts.txt"
[ -f "$HOSTLIST" ] || HOSTLIST="$ZAPRET_BASE/ipset/zapret-hosts-user.txt"
TPWS_OPT_BASE="--user=$TPWS_USER --port=$TPPORT"
TPWS_OPT_BASE4="--bind-addr=$TPWS_LOCALHOST4"
TPWS_OPT_BASE6="--bind-addr=::1"
# first wait for lan to ifup, then wait for bind-wait-ip-linklocal seconds for link local address and bind-wait-ip for any ipv6 as the worst case
TPWS_OPT_BASE6_PRE="--bind-linklocal=prefer --bind-wait-ifup=30 --bind-wait-ip=30 --bind-wait-ip-linklocal=3"
run_daemon()
{
# $1 - daemon string id or number. can use 1,2,3,...
# $2 - daemon
# $3 - daemon args
# use $PIDDIR/$DAEMONBASE$1.pid as pidfile
local DAEMONBASE=$(basename $2)
echo "Starting daemon $1: $2 $3"
procd_open_instance
procd_set_param command $2 $3
procd_set_param pidfile $PIDDIR/$DAEMONBASE$1.pid
procd_close_instance
}
run_tpws()
{
[ "$DISABLE_IPV4" = "1" ] && [ "$DISABLE_IPV6" = "1" ] && return 0
local OPT="$TPWS_OPT_BASE"
local DEVICE
[ "$DISABLE_IPV4" = "1" ] || OPT="$OPT $TPWS_OPT_BASE4"
[ "$DISABLE_IPV6" = "1" ] || {
OPT="$OPT $TPWS_OPT_BASE6"
network_get_device DEVICE lan
[ -n "$DEVICE" ] && OPT="$OPT --bind-iface6=$DEVICE $TPWS_OPT_BASE6_PRE"
}
run_daemon $1 $TPWS "$OPT $2"
}
stop_tpws()
{
stop_daemon $1 $TPWS
}
filter_apply_hostlist_target()
{
# $1 - var name of tpws or nfqws params
[ "$MODE_FILTER" = "hostlist" ] && eval $1="\"\$$1 --hostlist=$HOSTLIST\""
}
start_service() {
local opt
case "${MODE}" in
tpws)
opt="$TPWS_OPT"
filter_apply_hostlist_target opt
run_tpws 1 "$opt"
;;
nfqws)
opt="$NFQWS_OPT_BASE $NFQWS_OPT_DESYNC"
filter_apply_hostlist_target opt
run_daemon 1 $NFQWS "$opt"
;;
custom)
existf zapret_custom_daemons && zapret_custom_daemons $1
;;
esac
}

13
init.d/systemd/zapret-list-update.service Normal file
View File

@@ -0,0 +1,13 @@
[Unit]
Description=zapret ip/host list update
[Service]
Restart=no
IgnoreSIGPIPE=no
KillMode=control-group
GuessMainPID=no
RemainAfterExit=no
ExecStart=/opt/zapret/ipset/get_config.sh
[Install]
WantedBy=multi-user.target

11
init.d/systemd/zapret-list-update.timer Normal file
View File

@@ -0,0 +1,11 @@
[Unit]
Description=zapret ip/host list update timer
[Timer]
OnCalendar=*-*-2,4,6,8,10,12,14,16,18,20,22,24,26,28,30 00:00:00
RandomizedDelaySec=86400
Persistent=true
Unit=zapret-list-update.service
[Install]
WantedBy=timers.target

17
init.d/systemd/zapret.service Normal file
View File

@@ -0,0 +1,17 @@
[Unit]
After=network-online.target
Wants=network-online.target
[Service]
Type=forking
Restart=no
TimeoutSec=30sec
IgnoreSIGPIPE=no
KillMode=none
GuessMainPID=no
RemainAfterExit=no
ExecStart=/opt/zapret/init.d/sysv/zapret start
ExecStop=/opt/zapret/init.d/sysv/zapret stop
[Install]
WantedBy=multi-user.target

24
init.d/sysv/custom Normal file
View File

@@ -0,0 +1,24 @@
# this script contain your special code to launch daemons and configure firewall
# use helpers from "functions" file
# in case of upgrade keep this file only, do not modify others
zapret_custom_daemons()
{
# $1 - 1 - run, 0 - stop
# PLACEHOLDER
echo !!! NEED ATTENTION !!!
echo Start daemon\(s\)
echo Study how other sections work
do_daemon $1 1 /bin/sleep 20
}
zapret_custom_firewall()
{
# $1 - 1 - run, 0 - stop
# PLACEHOLDER
echo !!! NEED ATTENTION !!!
echo Configure iptables for required actions
echo Study how other sections work
}

44
init.d/sysv/custom-2nfqws Normal file
View File

@@ -0,0 +1,44 @@
# this custom script demonstrates how to use 2 copies of nfqws
# it preserves config settings : MODE_HTTP, MODE_HTTP_KEEPALIVE, MODE_HTTPS, MODE_FILTER, NFQWS_OPT_DESYNC
# NFQWS_OPT_DESYNC - parameters for http
# NFQWS_OPT_DESYNC2 - parameters for https. you should add this variable to config file, its absent there
QNUM2=$(($QNUM+1))
zapret_custom_daemons()
{
local opt
[ "$MODE_HTTP" = "1" ] && {
opt="$NFQWS_OPT_DESYNC"
filter_apply_hostlist_target opt
do_nfqws $1 1 "$opt"
}
[ "$MODE_HTTPS" = "1" ] && {
opt="$NFQWS_OPT_DESYNC2 --qnum=$QNUM2"
filter_apply_hostlist_target opt
do_nfqws $1 2 "$opt"
}
}
zapret_custom_firewall()
{
local f4 f6
local first_packet_only="-m connbytes --connbytes-dir=original --connbytes-mode=packets --connbytes 2:4"
local desync="-m mark ! --mark $DESYNC_MARK/$DESYNC_MARK"
[ "$MODE_HTTP" = "1" ] && {
f4="--dport 80"
[ "$MODE_HTTP_KEEPALIVE" = "1" ] || f4="$f4 $first_packet_only"
f6=$f4
filter_apply_ipset_target f4 f6
fw_nfqws_post $1 "$f4 $desync" "$f6 $desync" $QNUM
}
[ "$MODE_HTTPS" = "1" ] && {
f4="--dport 443 $first_packet_only"
f6=$f4
filter_apply_ipset_target f4 f6
fw_nfqws_post $1 "$f4 $desync" "$f6 $desync" $QNUM2
}
}

39
init.d/sysv/custom-tpws4http-nfqws4https Normal file
View File

@@ -0,0 +1,39 @@
# this custom script demonstrates how to apply tpws to http and nfqws to https
# it preserves config settings : MODE_HTTP, MODE_HTTPS, MODE_FILTER, TPWS_OPT, NFQWS_OPT_DESYNC
zapret_custom_daemons()
{
local opt
[ "$MODE_HTTP" = "1" ] && {
opt="$TPWS_OPT"
filter_apply_hostlist_target opt
do_tpws $1 1 "$opt"
}
[ "$MODE_HTTPS" = "1" ] && {
opt="$NFQWS_OPT_DESYNC"
filter_apply_hostlist_target opt
do_nfqws $1 2 "$opt"
}
}
zapret_custom_firewall()
{
local f4 f6
local first_packet_only="-m connbytes --connbytes-dir=original --connbytes-mode=packets --connbytes 2:4"
local desync="-m mark ! --mark $DESYNC_MARK/$DESYNC_MARK"
[ "$MODE_HTTP" = "1" ] && {
f4="--dport 80"
f6=$f4
filter_apply_ipset_target f4 f6
fw_tpws $1 "$f4" "$f6" $TPPORT
}
[ "$MODE_HTTPS" = "1" ] && {
f4="--dport 443 $first_packet_only"
f6=$f4
filter_apply_ipset_target f4 f6
fw_nfqws_post $1 "$f4 $desync" "$f6 $desync" $QNUM
}
}

532
init.d/sysv/functions Normal file
View File

@@ -0,0 +1,532 @@
# init script functions library for desktop linux systems
[ -n "$ZAPRET_BASE" ] || ZAPRET_BASE=/opt/zapret
# SHOULD EDIT config
. "$ZAPRET_BASE/config"
PIDDIR=/var/run
IPSET_CR="$ZAPRET_BASE/ipset/create_ipset.sh"
WS_USER=tpws
QNUM=200
NFQWS="$ZAPRET_BASE/nfq/nfqws"
NFQWS_OPT_BASE="--qnum=$QNUM --user=$WS_USER"
TPPORT=988
TPWS="$ZAPRET_BASE/tpws/tpws"
TPWS_LOCALHOST4=127.0.0.127
HOSTLIST="$ZAPRET_BASE/ipset/zapret-hosts.txt.gz"
[ -f "$HOSTLIST" ] || HOSTLIST="$ZAPRET_BASE/ipset/zapret-hosts.txt"
[ -f "$HOSTLIST" ] || HOSTLIST="$ZAPRET_BASE/ipset/zapret-hosts-user.txt"
TPWS_OPT_BASE="--user=$WS_USER --port=$TPPORT"
TPWS_OPT_BASE4="--bind-addr=$TPWS_LOCALHOST4"
TPWS_OPT_BASE6="--bind-addr=::1"
# first wait for lan to ifup, then wait for bind-wait-ip-linklocal seconds for link local address and bind-wait-ip for any ipv6 as the worst case
TPWS_OPT_BASE6_PRE="--bind-linklocal=prefer --bind-wait-ifup=30 --bind-wait-ip=30 --bind-wait-ip-linklocal=3"
[ -n "$IFACE_WAN" ] && IPT_OWAN="-o $IFACE_WAN"
[ -n "$IFACE_WAN" ] && IPT_IWAN="-i $IFACE_WAN"
[ -n "$IFACE_LAN" ] && IPT_ILAN="-i $IFACE_LAN"
[ -n "$DESYNC_MARK" ] || DESYNC_MARK=0x40000000
# max wait time for the link local ipv6 on the LAN interface
LINKLOCAL_WAIT_SEC=5
CUSTOM_SCRIPT="$ZAPRET_BASE/init.d/sysv/custom"
[ -f "$CUSTOM_SCRIPT" ] && . "$CUSTOM_SCRIPT"
IPSET_EXCLUDE="-m set ! --match-set nozapret"
IPSET_EXCLUDE6="-m set ! --match-set nozapret6"
exists()
{
which "$1" >/dev/null 2>/dev/null
}
existf()
{
type "$1" >/dev/null 2>/dev/null
}
on_off_function()
{
# $1 : function name on
# $2 : function name off
# $3 : 0 - off, 1 - on
local F="$1"
[ "$3" = "1" ] || F="$2"
shift
shift
shift
"$F" "$@"
}
ipt()
{
iptables -C "$@" 2>/dev/null || iptables -I "$@"
}
ipt_del()
{
iptables -C "$@" 2>/dev/null && iptables -D "$@"
}
ipt_add_del()
{
on_off_function ipt ipt_del "$@"
}
ipt6()
{
ip6tables -C "$@" 2>/dev/null || ip6tables -I "$@"
}
ipt6_del()
{
ip6tables -C "$@" 2>/dev/null && ip6tables -D "$@"
}
ipt6_add_del()
{
on_off_function ipt6 ipt6_del "$@"
}
# there's no route_localnet for ipv6
# the best we can is to route to link local of the incoming interface
# OUTPUT - can DNAT to ::1
# PREROUTING - can't DNAT to ::1. can DNAT to link local of -i interface or to any global addr
# not a good idea to expose tpws to the world (bind to ::)
get_ipv6_linklocal()
{
# $1 - interface name. if empty - any interface
local dev
[ -n "$1" ] && dev="dev $1"
ip addr show $dev | sed -e 's/^.*inet6 \([^ ]*\)\/[0-9]* scope link.*$/\1/;t;d' | head -n 1
}
get_ipv6_global()
{
# $1 - interface name. if empty - any interface
local dev
[ -n "$1" ] && dev="dev $1"
ip addr show $dev | sed -e 's/^.*inet6 \([^ ]*\)\/[0-9]* scope global.*$/\1/;t;d' | head -n 1
}
iface_is_up()
{
# $1 - interface name
[ -f /sys/class/net/$1/operstate ] || return
local state
read state </sys/class/net/$1/operstate
[ "$state" != "down" ]
}
wait_ifup()
{
# $1 - interface name
local ct=0
while
iface_is_up $1 && return
[ "$ct" -ge "$IFUP_WAIT_SEC" ] && break
echo waiting for ifup of $1 for another $(($IFUP_WAIT_SEC - $ct)) seconds ...
ct=$(($ct+1))
sleep 1
do :; done
false
}
dnat6_target()
{
# get target ip address for DNAT. prefer link locals
# tpws should be as inaccessible from outside as possible
# link local address can appear not immediately after ifup
# DNAT6_TARGET=- means attempt was made but address was not found (to avoid multiple re-attempts)
[ -n "$DNAT6_TARGET" ] || {
local ct=0
while
DNAT6_TARGET=$(get_ipv6_linklocal $IFACE_LAN)
[ -n "$DNAT6_TARGET" ] && break
[ "$ct" -ge "$LINKLOCAL_WAIT_SEC" ] && break
echo waiting for the link local for another $(($LINKLOCAL_WAIT_SEC - $ct)) seconds ...
ct=$(($ct+1))
sleep 1
do :; done
[ -n "$DNAT6_TARGET" ] || {
echo no link local. getting global
DNAT6_TARGET=$(get_ipv6_global $IFACE_LAN)
[ -n "$DNAT6_TARGET" ] || {
echo could not get any address
DNAT6_TARGET=-
}
}
}
}
prepare_tpws_fw4()
{
# otherwise linux kernel will treat 127.0.0.0/8 as "martian" ip and refuse routing to it
# NOTE : kernels <3.6 do not have this feature. consider upgrading or change DNAT to REDIRECT and do not bind to 127.0.0.0/8
[ -n "$IFACE_LAN" ] && {
iptables -C INPUT -i $IFACE_LAN -j input_lan_rule_zapret 2>/dev/null || {
# allow localnet route only to special tpws IP
iptables -N input_lan_rule_zapret 2>/dev/null
iptables -F input_lan_rule_zapret
iptables -A input_lan_rule_zapret -d $TPWS_LOCALHOST4 -j RETURN
iptables -A input_lan_rule_zapret -d 127.0.0.0/8 -j DROP
iptables -I INPUT -i $IFACE_LAN -j input_lan_rule_zapret
}
sysctl -qw net.ipv4.conf.$IFACE_LAN.route_localnet=1
}
}
unprepare_tpws_fw4()
{
[ -n "$IFACE_LAN" ] && {
iptables -C INPUT -i $IFACE_LAN -j input_lan_rule_zapret 2>/dev/null && {
sysctl -qw net.ipv4.conf.$IFACE_LAN.route_localnet=0
iptables -D INPUT -i $IFACE_LAN -j input_lan_rule_zapret
iptables -F input_lan_rule_zapret
iptables -X input_lan_rule_zapret
}
}
}
unprepare_tpws_fw()
{
unprepare_tpws_fw4
}
print_op()
{
if [ "$1" = "1" ]; then
echo "Adding ip$4tables rule for $3 : $2"
else
echo "Deleting ip$4tables rule for $3 : $2"
fi
}
fw_tpws4()
{
# $1 - 1 - add, 0 - del
# $2 - iptable filter for ipv4
# $3 - tpws port
[ "$DISABLE_IPV4" = "1" ] || {
[ "$1" = 1 ] && prepare_tpws_fw4
print_op $1 "$2" "tpws"
[ -n "$IFACE_LAN" ] && {
ipt_add_del $1 PREROUTING -t nat $IPT_ILAN -p tcp $2 $IPSET_EXCLUDE dst -j DNAT --to $TPWS_LOCALHOST4:$3
}
ipt_add_del $1 OUTPUT -t nat $IPT_OWAN -m owner ! --uid-owner $WS_USER -p tcp $2 $IPSET_EXCLUDE dst -j DNAT --to $TPWS_LOCALHOST4:$3
}
}
fw_tpws6()
{
# $1 - 1 - add, 0 - del
# $2 - iptable filter for ipv6
# $3 - tpws port
[ "$DISABLE_IPV6" = "1" ] || {
print_op $1 "$2" "tpws" 6
[ -n "$IFACE_LAN" ] && {
dnat6_target
[ "$DNAT6_TARGET" != "-" ] && ipt6_add_del $1 PREROUTING -t nat $IPT_ILAN -p tcp $2 $IPSET_EXCLUDE6 dst -j DNAT --to [$DNAT6_TARGET]:$3
}
ipt6_add_del $1 OUTPUT -t nat $IPT_OWAN -m owner ! --uid-owner $WS_USER -p tcp $2 $IPSET_EXCLUDE6 dst -j DNAT --to [::1]:$3
}
}
fw_tpws()
{
# $1 - 1 - add, 0 - del
# $2 - iptable filter for ipv4
# $3 - iptable filter for ipv6
# $4 - tpws port
fw_tpws4 $1 "$2" $4
fw_tpws6 $1 "$3" $4
}
fw_nfqws_pre4()
{
# $1 - 1 - add, 0 - del
# $2 - iptable filter for ipv4
# $3 - queue number
[ "$DISABLE_IPV4" = "1" ] || {
print_op $1 "$2" "nfqws prerouting"
ipt_add_del $1 PREROUTING -t mangle $IPT_IWAN -p tcp $2 $IPSET_EXCLUDE src -j NFQUEUE --queue-num $3 --queue-bypass
}
}
fw_nfqws_pre6()
{
# $1 - 1 - add, 0 - del
# $2 - iptable filter for ipv6
# $3 - queue number
[ "$DISABLE_IPV6" = "1" ] || {
print_op $1 "$2" "nfqws prerouting" 6
ipt6_add_del $1 PREROUTING -t mangle $IPT_IWAN -p tcp $2 $IPSET_EXCLUDE6 src -j NFQUEUE --queue-num $3 --queue-bypass
}
}
fw_nfqws_pre()
{
# $1 - 1 - add, 0 - del
# $2 - iptable filter for ipv4
# $3 - iptable filter for ipv6
# $4 - queue number
fw_nfqws_pre4 $1 "$2" $4
fw_nfqws_pre6 $1 "$3" $4
}
fw_nfqws_post4()
{
# $1 - 1 - add, 0 - del
# $2 - iptable filter for ipv4
# $3 - queue number
[ "$DISABLE_IPV4" = "1" ] || {
print_op $1 "$2" "nfqws postrouting"
ipt_add_del $1 POSTROUTING -t mangle $IPT_OWAN -p tcp $2 $IPSET_EXCLUDE dst -j NFQUEUE --queue-num $3 --queue-bypass
}
}
fw_nfqws_post6()
{
# $1 - 1 - add, 0 - del
# $2 - iptable filter for ipv6
# $3 - queue number
[ "$DISABLE_IPV6" = "1" ] || {
print_op $1 "$2" "nfqws postrouting" 6
ipt6_add_del $1 POSTROUTING -t mangle $IPT_OWAN -p tcp $2 $IPSET_EXCLUDE6 dst -j NFQUEUE --queue-num $3 --queue-bypass
}
}
fw_nfqws_post()
{
# $1 - 1 - add, 0 - del
# $2 - iptable filter for ipv4
# $3 - iptable filter for ipv6
# $4 - queue number
fw_nfqws_post4 $1 "$2" $4
fw_nfqws_post6 $1 "$3" $4
}
run_daemon()
{
# $1 - daemon number : 1,2,3,...
# $2 - daemon
# $3 - daemon args
# use $PIDDIR/$DAEMONBASE$1.pid as pidfile
local DAEMONBASE=$(basename $2)
local PIDFILE=$PIDDIR/$DAEMONBASE$1.pid
echo "Starting daemon $1: $2 $3"
if exists start-stop-daemon ; then
start-stop-daemon --start --pidfile "$PIDFILE" --background --make-pidfile --exec "$2" -- $3
else
if [ -f "$PIDFILE" ] && pgrep -F "$PIDFILE" "$DAEMONBASE" >/dev/null; then
echo already running
else
"$2" $3 >/dev/null 2>/dev/null &
PID=$!
if [ -n "$PID" ]; then
echo $PID >$PIDFILE
else
echo could not start daemon $1 : $2 $3
false
fi
fi
fi
}
stop_daemon()
{
# $1 - daemon number : 1,2,3,...
# $2 - daemon
# use $PIDDIR/$DAEMONBASE$1.pid as pidfile
local DAEMONBASE=$(basename $2)
local PIDFILE=$PIDDIR/$DAEMONBASE$1.pid
echo "Stopping daemon $1: $2"
if exists start-stop-daemon ; then
start-stop-daemon --stop --pidfile "$PIDFILE" --exec "$2"
else
if [ -f "$PIDFILE" ]; then
read PID <"$PIDFILE"
kill $PID
rm -f "$PIDFILE"
else
echo no pidfile : $PIDFILE
fi
fi
}
do_daemon()
{
# $1 - 1 - run, 0 - stop
on_off_function run_daemon stop_daemon "$@"
}
prepare_user()
{
# $WS_USER is required to prevent redirection of the traffic originating from TPWS itself
# otherwise infinite loop will occur
# also its good idea not to run tpws as root
id -u $WS_USER >/dev/null 2>/dev/null || useradd --no-create-home --system --shell /bin/false $WS_USER
}
do_tpws()
{
# $1 : 1 - run, 0 - stop
# $2 : daemon number
# $3 : daemon args
[ "$1" = "1" ] && prepare_user
[ "$DISABLE_IPV4" = "1" ] && [ "$DISABLE_IPV6" = "1" ] && return 0
local OPT="$TPWS_OPT_BASE"
[ "$DISABLE_IPV4" = "1" ] || OPT="$OPT $TPWS_OPT_BASE4"
[ "$DISABLE_IPV6" = "1" ] || {
OPT="$OPT $TPWS_OPT_BASE6"
[ -n "$IFACE_LAN" ] && OPT="$OPT --bind-iface6=$IFACE_LAN $TPWS_OPT_BASE6_PRE"
}
do_daemon $1 $2 $TPWS "$OPT $3"
}
do_nfqws()
{
# $1 : 1 - run, 0 - stop
# $2 : daemon number
# $3 : daemon args
[ "$1" = "1" ] && prepare_user
do_daemon $1 $2 $NFQWS "$NFQWS_OPT_BASE $3"
}
filter_apply_port_target()
{
# $1 - var name of iptables filter
local f
if [ "$MODE_HTTP" = "1" ] && [ "$MODE_HTTPS" = "1" ]; then
f="-m multiport --dports 80,443"
elif [ "$MODE_HTTPS" = "1" ]; then
f="--dport 443"
elif [ "$MODE_HTTP" = "1" ]; then
f="--dport 80"
else
echo WARNING !!! HTTP and HTTPS are both disabled
fi
eval $1="\"\$$1 $f\""
}
filter_apply_ipset_target()
{
# $1 - var name of ipv4 iptables filter
# $2 - var name of ipv6 iptables filter
if [ "$MODE_FILTER" = "ipset" ]; then
eval $1="\"\$$1 -m set --match-set zapret dst\""
eval $2="\"\$$2 -m set --match-set zapret6 dst\""
fi
}
filter_apply_hostlist_target()
{
# $1 - var name of tpws or nfqws params
[ "$MODE_FILTER" = "hostlist" ] && eval $1="\"\$$1 --hostlist=$HOSTLIST\""
}
create_ipset()
{
echo "Creating ipset"
"$IPSET_CR" "$@"
}
zapret_do_firewall()
{
# $1 - 1 - add, 0 - del
local first_packet_only="-m connbytes --connbytes-dir=original --connbytes-mode=packets --connbytes 2:4"
local desync="-m mark ! --mark $DESYNC_MARK/$DESYNC_MARK"
local f4 f6
# always create ipsets. ip_exclude ipset is required
[ "$1" != "1" ] || create_ipset no-update
case "${MODE}" in
tpws)
if [ ! "$MODE_HTTP" = "1" ] && [ ! "$MODE_HTTPS" = "1" ]; then
echo both http and https are disabled. not applying redirection.
else
filter_apply_port_target f4
f6=$f4
filter_apply_ipset_target f4 f6
fw_tpws $1 "$f4" "$f6" $TPPORT
fi
;;
nfqws)
if [ ! "$MODE_HTTP" = "1" ] && [ ! "$MODE_HTTPS" = "1" ]; then
echo both http and https are disabled. not applying redirection.
else
if [ "$MODE_HTTP_KEEPALIVE" = "1" ]; then
if [ "$MODE_HTTP" = "1" ]; then
f4="--dport 80"
f6=$f4
filter_apply_ipset_target f4 f6
fw_nfqws_post $1 "$f4 $desync" "$f6 $desync" $QNUM
fi
if [ "$MODE_HTTPS" = "1" ]; then
f4="--dport 443 $first_packet_only"
f6=$f4
filter_apply_ipset_target f4 f6
fw_nfqws_post $1 "$f4 $desync" "$f6 $desync" $QNUM
fi
else
filter_apply_port_target f4
f4="$f4 $first_packet_only"
f6=$f4
filter_apply_ipset_target f4 f6
fw_nfqws_post $1 "$f4 $desync" "$f6 $desync" $QNUM
fi
fi
;;
custom)
existf zapret_custom_firewall && zapret_custom_firewall $1
;;
esac
[ "$1" = 0 ] && unprepare_tpws_fw
}
zapret_apply_firewall()
{
zapret_do_firewall 1 "$@"
}
zapret_unapply_firewall()
{
zapret_do_firewall 0 "$@"
}
zapret_do_daemons()
{
# $1 - 1 - run, 0 - stop
local opt
case "${MODE}" in
tpws)
opt="$TPWS_OPT"
filter_apply_hostlist_target opt
do_tpws $1 1 "$opt"
;;
nfqws)
opt="$NFQWS_OPT_DESYNC"
filter_apply_hostlist_target opt
do_nfqws $1 1 "$opt"
;;
custom)
existf zapret_custom_daemons && zapret_custom_daemons $1
;;
esac
}
zapret_run_daemons()
{
zapret_do_daemons 1 "$@"
}
zapret_stop_daemons()
{
zapret_do_daemons 0 "$@"
}

50
init.d/sysv/zapret Executable file
View File

@@ -0,0 +1,50 @@
#!/bin/sh
### BEGIN INIT INFO
# Provides: zapret
# Required-Start: $local_fs $network
# Required-Stop: $local_fs $network
# Default-Start: 2 3 4 5
# Default-Stop: 0 1 6
### END INIT INFO
SCRIPT=$(readlink -f "$0")
EXEDIR=$(dirname "$SCRIPT")
ZAPRET_BASE=$(readlink -f "$EXEDIR/../..")
. "$EXEDIR/functions"
NAME=zapret
DESC=anti-zapret
case "$1" in
start)
zapret_run_daemons
[ "$INIT_APPLY_FW" != "1" ] || zapret_apply_firewall
;;
stop)
zapret_stop_daemons
[ "$INIT_APPLY_FW" != "1" ] || zapret_unapply_firewall
;;
start-fw)
zapret_apply_firewall
;;
stop-fw)
zapret_unapply_firewall
;;
start-daemons)
zapret_run_daemons
;;
stop-daemons)
zapret_stop_daemons
;;
*)
N=/etc/init.d/$NAME
echo "Usage: $N {start|stop|start-fw|stop-fw|start-daemons|stop-daemons}" >&2
exit 1
;;
esac
exit 0