mirror of
https://github.com/bol-van/zapret.git
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255 lines
6.5 KiB
Plaintext
255 lines
6.5 KiB
Plaintext
. /lib/functions/network.sh
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[ -n "$ZAPRET_BASE" ] || ZAPRET_BASE=/opt/zapret
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. "$ZAPRET_BASE/config"
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. "$ZAPRET_BASE/common/base.sh"
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. "$ZAPRET_BASE/common/fwtype.sh"
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. "$ZAPRET_BASE/common/queue.sh"
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. "$ZAPRET_BASE/common/linux_iphelper.sh"
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. "$ZAPRET_BASE/common/ipt.sh"
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. "$ZAPRET_BASE/common/nft.sh"
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. "$ZAPRET_BASE/common/linux_fw.sh"
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. "$ZAPRET_BASE/common/list.sh"
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[ -n "$QNUM" ] || QNUM=200
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[ -n "$TPPORT" ] || TPPORT=988
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[ -n "$WS_USER" ] || WS_USER=daemon
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[ -n "$DESYNC_MARK" ] || DESYNC_MARK=0x40000000
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[ -n "$OPENWRT_LAN" ] || OPENWRT_LAN=lan
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TPWS_LOCALHOST4=127.0.0.127
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# max wait time for the link local ipv6 on the LAN interface
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LINKLOCAL_WAIT_SEC=5
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IPSET_CR="$ZAPRET_BASE/ipset/create_ipset.sh"
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CUSTOM_SCRIPT="$ZAPRET_BASE/init.d/openwrt/custom"
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[ -f "$CUSTOM_SCRIPT" ] && . "$CUSTOM_SCRIPT"
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IPSET_EXCLUDE="-m set ! --match-set nozapret"
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IPSET_EXCLUDE6="-m set ! --match-set nozapret6"
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NFQWS_OPT_DESYNC_HTTP="${NFQWS_OPT_DESYNC_HTTP:-$NFQWS_OPT_DESYNC}"
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NFQWS_OPT_DESYNC_HTTPS="${NFQWS_OPT_DESYNC_HTTPS:-$NFQWS_OPT_DESYNC}"
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NFQWS_OPT_DESYNC_HTTP6="${NFQWS_OPT_DESYNC_HTTP6:-$NFQWS_OPT_DESYNC_HTTP}"
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NFQWS_OPT_DESYNC_HTTPS6="${NFQWS_OPT_DESYNC_HTTPS6:-$NFQWS_OPT_DESYNC_HTTPS}"
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NFQWS_OPT_DESYNC_QUIC6="${NFQWS_OPT_DESYNC_QUIC6:-$NFQWS_OPT_DESYNC_QUIC}"
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# can be multiple ipv6 outgoing interfaces
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# uplink from isp, tunnelbroker, vpn, ...
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# want them all. who knows what's the real one that blocks sites
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# dont want any manual configuration - want to do it automatically
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# standard network_find_wan[6] return only the first
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# we use low level function from network.sh to avoid this limitation
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# it can change theoretically and stop working
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network_find_wan4_all()
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{
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__network_ifstatus "$1" "" "[@.route[@.target='0.0.0.0' && !@.table]].interface" "" 10 2>/dev/null && return
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network_find_wan $1
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}
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network_find_wan_all()
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{
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network_find_wan4_all "$@"
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}
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network_find_wan6_all()
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{
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__network_ifstatus "$1" "" "[@.route[@.target='::' && !@.table]].interface" "" 10 2>/dev/null && return
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network_find_wan6 $1
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}
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dnat6_target()
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{
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# $1 - lan network name
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# $2 - var to store target ip6
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network_is_up $1 || {
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[ -n "$2" ] && eval $2=''
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return
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}
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local DEVICE
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network_get_device DEVICE $1
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_dnat6_target $DEVICE $2
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}
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set_route_localnet()
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{
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# $1 - 1 = enable, 0 = disable
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local DLAN
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call_for_multiple_items network_get_device DLAN "$OPENWRT_LAN"
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_set_route_localnet $1 $DLAN
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}
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fw_nfqws_post_x()
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{
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# $1 - 1 - add, 0 - del
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# $2 - filter
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# $3 - queue number
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# $4 - ip version : 4 or 6
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network_find_wan${4}_all ifaces
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call_for_multiple_items network_get_device DWAN "$ifaces"
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[ -n "$DWAN" ] && _fw_nfqws_post${4} $1 "$2" $3 "$(unique $DWAN)"
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}
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fw_nfqws_post4()
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{
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fw_nfqws_post_x $1 "$2" $3 4
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}
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fw_nfqws_post6()
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{
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fw_nfqws_post_x $1 "$2" $3 6
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}
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fw_tpws_x()
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{
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# $1 - 1 - add, 0 - del
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# $2 - filter
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# $3 - tpws port
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# $4 - ip version : 4 or 6
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local ifaces DLAN DWAN
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call_for_multiple_items network_get_device DLAN "$OPENWRT_LAN"
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network_find_wan${4}_all ifaces
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call_for_multiple_items network_get_device DWAN "$ifaces"
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[ -n "$DWAN" ] && _fw_tpws${4} $1 "$2" $3 "$DLAN" "$(unique $DWAN)"
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}
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fw_tpws4()
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{
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fw_tpws_x $1 "$2" $3 4
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}
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fw_tpws6()
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{
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fw_tpws_x $1 "$2" $3 6
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}
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create_ipset()
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{
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echo "Creating ip list table (firewall type $FWTYPE)"
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"$IPSET_CR" "$@"
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}
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list_nfqws_rules()
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{
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# $1 = '' for ipv4, '6' for ipv6
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ip$1tables -S POSTROUTING -t mangle | \
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grep -E "NFQUEUE --queue-num $QNUM --queue-bypass|NFQUEUE --queue-num $(($QNUM+1)) --queue-bypass|NFQUEUE --queue-num $(($QNUM+2)) --queue-bypass|NFQUEUE --queue-num $(($QNUM+3)) --queue-bypass|NFQUEUE --queue-num $(($QNUM+10)) --queue-bypass|NFQUEUE --queue-num $(($QNUM+11)) --queue-bypass" | \
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sed -re 's/^-A POSTROUTING (.*) -j NFQUEUE.*$/\1/' -e "s/-m mark ! --mark $DESYNC_MARK\/$DESYNC_MARK//"
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}
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reverse_nfqws_rule()
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{
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sed -e 's/-o /-i /g' -e 's/--dport /--sport /g' -e 's/--dports /--sports /g' -e 's/ dst$/ src/' -e 's/ dst / src /g'
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}
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apply_flow_offloading_enable_rule()
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{
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# $1 = '' for ipv4, '6' for ipv6
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local i off='-j FLOWOFFLOAD'
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[ "$FLOWOFFLOAD" = "hardware" ] && off="$off --hw"
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i="forwarding_rule_zapret -m comment --comment zapret_traffic_offloading_enable -m conntrack --ctstate RELATED,ESTABLISHED $off"
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echo enabling ipv${1:-4} flow offloading : $i
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ip$1tables -A $i
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}
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apply_flow_offloading_exempt_rule()
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{
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# $1 = '' for ipv4, '6' for ipv6
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local i v
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v=$1
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shift
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i="forwarding_rule_zapret $@ -m comment --comment zapret_traffic_offloading_exemption -j RETURN"
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echo applying ipv${v:-4} flow offloading exemption : $i
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ip${v}tables -A $i
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}
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flow_offloading_unexempt_v()
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{
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ipt$1_del FORWARD -j forwarding_rule_zapret
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ip$1tables -F forwarding_rule_zapret 2>/dev/null
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ip$1tables -X forwarding_rule_zapret 2>/dev/null
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}
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flow_offloading_exempt_v()
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{
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# $1 = '' for ipv4, '6' for ipv6
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is_ipt_flow_offload_avail $1 || return 0
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flow_offloading_unexempt_v $1
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[ "$FLOWOFFLOAD" = 'software' -o "$FLOWOFFLOAD" = 'hardware' ] && {
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ip$1tables -N forwarding_rule_zapret
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list_nfqws_rules $1 |
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while read rule; do
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apply_flow_offloading_exempt_rule "$1" $rule
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done
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list_nfqws_rules $1 | grep -v "connbytes" | reverse_nfqws_rule |
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while read rule; do
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apply_flow_offloading_exempt_rule "$1" $rule
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done
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apply_flow_offloading_enable_rule $1
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ipt$1 FORWARD -j forwarding_rule_zapret
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}
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return 0
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}
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flow_offloading_exempt()
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{
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[ "$DISABLE_IPV4" = "1" ] || flow_offloading_exempt_v
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[ "$DISABLE_IPV6" = "1" ] || flow_offloading_exempt_v 6
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}
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flow_offloading_unexempt()
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{
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[ "$DISABLE_IPV4" = "1" ] || flow_offloading_unexempt_v
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[ "$DISABLE_IPV6" = "1" ] || flow_offloading_unexempt_v 6
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}
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nft_fill_ifsets_overload()
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{
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local ifaces DLAN DWAN DWAN6 PDLAN PDWAN PDWAN6
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call_for_multiple_items network_get_device DLAN "$OPENWRT_LAN"
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call_for_multiple_items network_get_physdev PDLAN "$OPENWRT_LAN"
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network_find_wan4_all ifaces
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call_for_multiple_items network_get_device DWAN "$ifaces"
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call_for_multiple_items network_get_physdev PDWAN "$ifaces"
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network_find_wan6_all ifaces
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call_for_multiple_items network_get_device DWAN6 "$ifaces"
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call_for_multiple_items network_get_physdev PDWAN6 "$ifaces"
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nft_fill_ifsets "$DLAN" "$DWAN" "$DWAN6" "$PDLAN" "$PDWAN" "$PDWAN6"
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}
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nft_fw_tpws4()
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{
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_nft_fw_tpws4 "$1" $2 always_apply_wan_filter
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}
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nft_fw_tpws6()
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{
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local DLAN
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call_for_multiple_items network_get_device DLAN "$OPENWRT_LAN"
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_nft_fw_tpws6 "$1" $2 "$DLAN" always_apply_wan_filter
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}
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nft_fw_nfqws_post4()
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{
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_nft_fw_nfqws_post4 "$1" $2 always_apply_wan_filter
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}
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nft_fw_nfqws_post6()
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{
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_nft_fw_nfqws_post6 "$1" $2 always_apply_wan_filter
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}
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