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blockcheck: partial OpenBSD support
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bol-van
parent
d5ccd421df
commit
b54f856c81
111
blockcheck.sh
111
blockcheck.sh
@ -38,6 +38,8 @@ DNSCHECK_DIG1=/tmp/dig1.txt
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DNSCHECK_DIG2=/tmp/dig2.txt
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DNSCHECK_DIGS=/tmp/digs.txt
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unset PF_STATUS
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PF_RULES_SAVE=/tmp/pf-zapret-save.conf
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killwait()
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{
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@ -58,6 +60,65 @@ exitp()
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exit $1
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}
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pf_is_avail()
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{
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[ -c /dev/pf ]
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}
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pf_status()
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{
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pfctl -qsi | sed -nre "s/^Status: ([^ ]+).*$/\1/p"
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}
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pf_is_enabled()
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{
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[ "$(pf_status)" = Enabled ]
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}
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pf_save()
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{
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PF_STATUS=0
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pf_is_enabled && PF_STATUS=1
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pfctl -sr >"$PF_RULES_SAVE"
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}
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pf_restore()
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{
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[ -n "$PF_STATUS" ] || return
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if [ -f "$PF_RULES_SAVE" ]; then
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pfctl -qf "$PF_RULES_SAVE"
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else
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echo | pfctl -qf -
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fi
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if [ "$PF_STATUS" = 1 ]; then
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pfctl -qe
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else
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pfctl -qd
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fi
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}
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pf_clean()
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{
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rm -f "$PF_RULES_SAVE"
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}
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opf_dvtws_anchor()
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{
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echo "set reassemble no"
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echo "pass in quick proto tcp from port {80,443} flags SA/SA divert-packet port $IPFW_DIVERT_PORT no state"
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echo "pass in quick proto tcp from port {80,443} no state"
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echo "pass out quick proto tcp to port {80,443} divert-packet port $IPFW_DIVERT_PORT no state"
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echo "pass"
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}
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opf_prepare_dvtws()
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{
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opf_dvtws_anchor | pfctl -qf -
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pfctl -qe
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}
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cleanup()
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{
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case "$UNAME" in
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OpenBSD)
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pf_clean
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;;
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esac
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}
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IPT()
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{
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$IPTABLES -C "$@" >/dev/null 2>/dev/null || $IPTABLES -I "$@"
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@ -127,6 +188,11 @@ check_system()
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FWTYPE=ipfw
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[ -f /etc/platform ] && read SUBSYS </etc/platform
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;;
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OpenBSD)
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PKTWS="$DVTWS"
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PKTWSD=dvtws
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FWTYPE=opf
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;;
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*)
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echo $UNAME not supported
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exitp 5
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@ -189,6 +255,19 @@ check_prerequisites()
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exitp 6
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}
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;;
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OpenBSD)
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progs="$progs pfctl"
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pf_is_avail || {
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echo pf is not available
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exitp 6
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}
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# I dont know how to redirect traffic originating from the host itself
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# even with route-to trick DIOCNATLOOK fails, thus making tpws unusable
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# this trick works fine on MacOS but doesn't work on FreeBSD and OpenBSD
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# socks version is also not a solution because I can't control ip version of the resolved domain
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SKIP_TPWS=1
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pf_save
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;;
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esac
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for prog in $progs; do
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@ -367,6 +446,9 @@ pktws_ipt_prepare()
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# for autottl mode
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IPFW_ADD divert $IPFW_DIVERT_PORT tcp from any $1 to me proto ip${IPV} tcpflags syn,ack in
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;;
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opf)
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opf_prepare_dvtws
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;;
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esac
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}
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pktws_ipt_unprepare()
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@ -393,6 +475,9 @@ pktws_ipt_unprepare()
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ipfw)
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IPFW_DEL
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;;
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opf)
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pf_restore
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;;
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esac
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}
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tpws_ipt_prepare()
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@ -434,7 +519,7 @@ pktws_start()
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Linux)
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"$NFQWS" --uid $TPWS_UID:$TPWS_GID --dpi-desync-fwmark=$DESYNC_MARK --qnum=$QNUM "$@" >/dev/null &
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;;
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FreeBSD)
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FreeBSD|OpenBSD)
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"$DVTWS" --port=$IPFW_DIVERT_PORT "$@" >/dev/null &
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;;
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esac
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@ -642,7 +727,9 @@ pktws_check_domain_bypass()
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test_has_split $desync && pktws_curl_test_update $1 $3 $s --dpi-desync-split-pos=1 --dpi-desync-ttl=1 --dpi-desync-autottl=$delta $e
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}
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done
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f="badsum badseq md5sig datanoack"
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f=
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[ "$UNAME" = "OpenBSD" ] || f="badsum"
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f="$f badseq md5sig datanoack"
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[ "$IPV" = 6 ] && f="$f hopbyhop hopbyhop2"
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for fooling in $f; do
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pktws_curl_test_update $1 $3 $s --dpi-desync-fooling=$fooling $e && warn_fool $fooling
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@ -661,6 +748,8 @@ pktws_check_domain_bypass()
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[ "$sec" = 1 ] || break
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done
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# OpenBSD has checksum issues with fragmented packets
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if [ "$UNAME" != "OpenBSD" ]; then
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[ "$IPV" = 4 -o -n "$IP6_DEFRAG_DISABLE" ] && {
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for frag in 24 32 40 64 80 104; do
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tests="ipfrag2"
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@ -670,6 +759,7 @@ pktws_check_domain_bypass()
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done
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done
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}
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fi
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report_strategy $1 $3 $PKTWSD
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}
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@ -928,7 +1018,14 @@ ask_params()
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pingtest()
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{
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case "$UNAME" in
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OpenBSD)
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ping -c 1 -w 1 $1 >/dev/null
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;;
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*)
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ping -c 1 -W 1 $1 >/dev/null
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;;
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esac
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}
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dnstest()
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{
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@ -1048,6 +1145,7 @@ unprepare_all()
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pktws_ipt_unprepare 443
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}
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ws_kill
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cleanup
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}
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sigint()
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{
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@ -1056,6 +1154,11 @@ sigint()
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unprepare_all
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exitp 1
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}
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sigint_cleanup()
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{
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cleanup
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exit 1
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}
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sigpipe()
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{
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# must not write anything here to stdout
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@ -1068,9 +1171,11 @@ fix_sbin_path
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check_system
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require_root
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check_prerequisites
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trap sigint_cleanup INT
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check_dns
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check_virt
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ask_params
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trap - INT
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PID=
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NREPORT=
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@ -1087,6 +1192,8 @@ done
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trap - PIPE
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trap - INT
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cleanup
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echo
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echo \* SUMMARY
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report_print
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