976 lines
27 KiB
Bash
976 lines
27 KiB
Bash
#!/bin/sh
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IP4="ip -4"
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IP6="ip -6"
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IPS="ipset"
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IPT4="iptables -t mangle -w"
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IPT6="ip6tables -t mangle -w"
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LOG="logger -t mwan3[$$] -p"
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CONNTRACK_FILE="/proc/net/nf_conntrack"
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MWAN3_STATUS_DIR="/var/run/mwan3"
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MWAN3TRACK_STATUS_DIR="/var/run/mwan3track"
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MWAN3_INTERFACE_MAX=""
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DEFAULT_LOWEST_METRIC=256
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MMX_MASK=""
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MMX_DEFAULT=""
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MMX_BLACKHOLE=""
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MM_BLACKHOLE=""
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MMX_UNREACHABLE=""
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MM_UNREACHABLE=""
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# counts how many bits are set to 1
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# n&(n-1) clears the lowest bit set to 1
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mwan3_count_one_bits()
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{
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local count n
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count=0
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n=$(($1))
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while [ "$n" -gt "0" ]; do
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n=$((n&(n-1)))
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count=$((count+1))
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done
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echo $count
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}
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# maps the 1st parameter so it only uses the bits allowed by the bitmask (2nd parameter)
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# which means spreading the bits of the 1st parameter to only use the bits that are set to 1 in the 2nd parameter
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# 0 0 0 0 0 1 0 1 (0x05) 1st parameter
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# 1 0 1 0 1 0 1 0 (0xAA) 2nd parameter
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# 1 0 1 result
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mwan3_id2mask()
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{
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local bit_msk bit_val result
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bit_val=0
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result=0
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for bit_msk in $(seq 0 31); do
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if [ $((($2>>bit_msk)&1)) = "1" ]; then
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if [ $((($1>>bit_val)&1)) = "1" ]; then
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result=$((result|(1<<bit_msk)))
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fi
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bit_val=$((bit_val+1))
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fi
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done
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printf "0x%x" $result
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}
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mwan3_init()
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{
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local bitcnt
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local mmdefault
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[ -d $MWAN3_STATUS_DIR ] || mkdir -p $MWAN3_STATUS_DIR/iface_state
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# mwan3's MARKing mask (at least 3 bits should be set)
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if [ -e "${MWAN3_STATUS_DIR}/mmx_mask" ]; then
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MMX_MASK=$(cat "${MWAN3_STATUS_DIR}/mmx_mask")
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MWAN3_INTERFACE_MAX=$(uci_get_state mwan3 globals iface_max)
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else
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config_load mwan3
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config_get MMX_MASK globals mmx_mask '0x3F00'
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echo "$MMX_MASK" > "${MWAN3_STATUS_DIR}/mmx_mask"
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$LOG notice "Using firewall mask ${MMX_MASK}"
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bitcnt=$(mwan3_count_one_bits MMX_MASK)
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mmdefault=$(((1<<bitcnt)-1))
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MWAN3_INTERFACE_MAX=$(($mmdefault-3))
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uci_toggle_state mwan3 globals iface_max "$MWAN3_INTERFACE_MAX"
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$LOG notice "Max interface count is ${MWAN3_INTERFACE_MAX}"
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fi
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# mark mask constants
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bitcnt=$(mwan3_count_one_bits MMX_MASK)
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mmdefault=$(((1<<bitcnt)-1))
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MM_BLACKHOLE=$(($mmdefault-2))
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MM_UNREACHABLE=$(($mmdefault-1))
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# MMX_DEFAULT should equal MMX_MASK
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MMX_DEFAULT=$(mwan3_id2mask mmdefault MMX_MASK)
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MMX_BLACKHOLE=$(mwan3_id2mask MM_BLACKHOLE MMX_MASK)
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MMX_UNREACHABLE=$(mwan3_id2mask MM_UNREACHABLE MMX_MASK)
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}
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mwan3_lock() {
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lock /var/run/mwan3.lock
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}
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mwan3_unlock() {
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lock -u /var/run/mwan3.lock
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}
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mwan3_lock_clean() {
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rm -rf /var/run/mwan3.lock
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}
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mwan3_get_iface_id()
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{
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local _tmp _iface _iface_count
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_iface="$2"
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mwan3_get_id()
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{
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let _iface_count++
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[ "$1" == "$_iface" ] && _tmp=$_iface_count
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}
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config_foreach mwan3_get_id interface
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export "$1=$_tmp"
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}
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mwan3_set_connected_iptables()
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{
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local connected_network_v4 connected_network_v6
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$IPS -! create mwan3_connected_v4 hash:net
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$IPS create mwan3_connected_v4_temp hash:net
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for connected_network_v4 in $($IP4 route | awk '{print $1}' | egrep '[0-9]{1,3}(\.[0-9]{1,3}){3}'); do
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$IPS -! add mwan3_connected_v4_temp $connected_network_v4
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done
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for connected_network_v4 in $($IP4 route list table 0 | awk '{print $2}' | egrep '[0-9]{1,3}(\.[0-9]{1,3}){3}'); do
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$IPS -! add mwan3_connected_v4_temp $connected_network_v4
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done
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$IPS add mwan3_connected_v4_temp 224.0.0.0/3
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$IPS swap mwan3_connected_v4_temp mwan3_connected_v4
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$IPS destroy mwan3_connected_v4_temp
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$IPS -! create mwan3_connected_v6 hash:net family inet6
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$IPS create mwan3_connected_v6_temp hash:net family inet6
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for connected_network_v6 in $($IP6 route | awk '{print $1}' | egrep '([0-9a-fA-F]{1,4}:){7,7}[0-9a-fA-F]{1,4}|([0-9a-fA-F]{1,4}:){1,7}:|([0-9a-fA-F]{1,4}:){1,6}:[0-9a-fA-F]{1,4}|([0-9a-fA-F]{1,4}:){1,5}(:[0-9a-fA-F]{1,4}){1,2}|([0-9a-fA-F]{1,4}:){1,4}(:[0-9a-fA-F]{1,4}){1,3}|([0-9a-fA-F]{1,4}:){1,3}(:[0-9a-fA-F]{1,4}){1,4}|([0-9a-fA-F]{1,4}:){1,2}(:[0-9a-fA-F]{1,4}){1,5}|[0-9a-fA-F]{1,4}:((:[0-9a-fA-F]{1,4}){1,6})|:((:[0-9a-fA-F]{1,4}){1,7}|:)|fe80:(:[0-9a-fA-F]{0,4}){0,4}%[0-9a-zA-Z]{1,}|::(ffff(:0{1,4}){0,1}:){0,1}((25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9])\.){3,3}(25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9])|([0-9a-fA-F]{1,4}:){1,4}:((25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9])\.){3,3}(25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9])'); do
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$IPS -! add mwan3_connected_v6_temp $connected_network_v6
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done
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$IPS swap mwan3_connected_v6_temp mwan3_connected_v6
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$IPS destroy mwan3_connected_v6_temp
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$IPS -! create mwan3_connected list:set
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$IPS -! add mwan3_connected mwan3_connected_v4
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$IPS -! add mwan3_connected mwan3_connected_v6
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}
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mwan3_set_general_rules()
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{
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local IP
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for IP in "$IP4" "$IP6"; do
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RULE_NO=$(($MM_BLACKHOLE+2000))
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if [ -z "$($IP rule list | awk -v var="$RULE_NO:" '$1 == var')" ]; then
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$IP rule add pref $RULE_NO fwmark $MMX_BLACKHOLE/$MMX_MASK blackhole
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fi
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RULE_NO=$(($MM_UNREACHABLE+2000))
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if [ -z "$($IP rule list | awk -v var="$RULE_NO:" '$1 == var')" ]; then
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$IP rule add pref $RULE_NO fwmark $MMX_UNREACHABLE/$MMX_MASK unreachable
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fi
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done
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}
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mwan3_set_general_iptables()
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{
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local IPT
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for IPT in "$IPT4" "$IPT6"; do
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if ! $IPT -S mwan3_ifaces_in &> /dev/null; then
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$IPT -N mwan3_ifaces_in
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fi
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if ! $IPT -S mwan3_connected &> /dev/null; then
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$IPT -N mwan3_connected
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$IPS -! create mwan3_connected list:set
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$IPT -A mwan3_connected -m set --match-set mwan3_connected dst -j MARK --set-xmark $MMX_DEFAULT/$MMX_MASK
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fi
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if ! $IPT -S mwan3_ifaces_out &> /dev/null; then
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$IPT -N mwan3_ifaces_out
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fi
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if ! $IPT -S mwan3_rules &> /dev/null; then
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$IPT -N mwan3_rules
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fi
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if ! $IPT -S mwan3_hook &> /dev/null; then
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$IPT -N mwan3_hook
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$IPT -A mwan3_hook -j CONNMARK --restore-mark --nfmask $MMX_MASK --ctmask $MMX_MASK
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$IPT -A mwan3_hook -m mark --mark 0x0/$MMX_MASK -j mwan3_ifaces_in
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$IPT -A mwan3_hook -m mark --mark 0x0/$MMX_MASK -j mwan3_connected
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$IPT -A mwan3_hook -m mark --mark 0x0/$MMX_MASK -j mwan3_ifaces_out
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$IPT -A mwan3_hook -m mark --mark 0x0/$MMX_MASK -j mwan3_rules
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$IPT -A mwan3_hook -j CONNMARK --save-mark --nfmask $MMX_MASK --ctmask $MMX_MASK
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$IPT -A mwan3_hook -m mark ! --mark $MMX_DEFAULT/$MMX_MASK -j mwan3_connected
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fi
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if ! $IPT -S PREROUTING | grep mwan3_hook &> /dev/null; then
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$IPT -A PREROUTING -j mwan3_hook
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fi
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if ! $IPT -S OUTPUT | grep mwan3_hook &> /dev/null; then
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$IPT -A OUTPUT -j mwan3_hook
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fi
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done
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}
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mwan3_create_iface_iptables()
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{
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local id family
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config_get family $1 family ipv4
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mwan3_get_iface_id id $1
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[ -n "$id" ] || return 0
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if [ "$family" == "ipv4" ]; then
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$IPS -! create mwan3_connected list:set
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if ! $IPT4 -S mwan3_ifaces_in &> /dev/null; then
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$IPT4 -N mwan3_ifaces_in
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fi
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if ! $IPT4 -S mwan3_ifaces_out &> /dev/null; then
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$IPT4 -N mwan3_ifaces_out
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fi
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if ! $IPT4 -S mwan3_iface_in_$1 &> /dev/null; then
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$IPT4 -N mwan3_iface_in_$1
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fi
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if ! $IPT4 -S mwan3_iface_out_$1 &> /dev/null; then
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$IPT4 -N mwan3_iface_out_$1
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fi
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$IPT4 -F mwan3_iface_in_$1
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$IPT4 -A mwan3_iface_in_$1 -i $2 -m set --match-set mwan3_connected src -m mark --mark 0x0/$MMX_MASK -m comment --comment "default" -j MARK --set-xmark $MMX_DEFAULT/$MMX_MASK
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$IPT4 -A mwan3_iface_in_$1 -i $2 -m mark --mark 0x0/$MMX_MASK -m comment --comment "$1" -j MARK --set-xmark $(mwan3_id2mask id MMX_MASK)/$MMX_MASK
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$IPT4 -D mwan3_ifaces_in -m mark --mark 0x0/$MMX_MASK -j mwan3_iface_in_$1 &> /dev/null
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$IPT4 -A mwan3_ifaces_in -m mark --mark 0x0/$MMX_MASK -j mwan3_iface_in_$1
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$IPT4 -F mwan3_iface_out_$1
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$IPT4 -A mwan3_iface_out_$1 -o $2 -m mark --mark 0x0/$MMX_MASK -m comment --comment "$1" -j MARK --set-xmark $(mwan3_id2mask id MMX_MASK)/$MMX_MASK
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$IPT4 -D mwan3_ifaces_out -m mark --mark 0x0/$MMX_MASK -j mwan3_iface_out_$1 &> /dev/null
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$IPT4 -A mwan3_ifaces_out -m mark --mark 0x0/$MMX_MASK -j mwan3_iface_out_$1
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fi
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if [ "$family" == "ipv6" ]; then
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$IPS -! create mwan3_connected_v6 hash:net family inet6
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if ! $IPT6 -S mwan3_ifaces_in &> /dev/null; then
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$IPT6 -N mwan3_ifaces_in
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fi
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if ! $IPT6 -S mwan3_ifaces_out &> /dev/null; then
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$IPT6 -N mwan3_ifaces_out
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fi
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if ! $IPT6 -S mwan3_iface_in_$1 &> /dev/null; then
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$IPT6 -N mwan3_iface_in_$1
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fi
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if ! $IPT6 -S mwan3_iface_out_$1 &> /dev/null; then
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$IPT6 -N mwan3_iface_out_$1
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fi
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$IPT6 -F mwan3_iface_in_$1
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$IPT6 -A mwan3_iface_in_$1 -i $2 -m set --match-set mwan3_connected_v6 src -m mark --mark 0x0/$MMX_MASK -m comment --comment "default" -j MARK --set-xmark $MMX_DEFAULT/$MMX_MASK
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$IPT6 -A mwan3_iface_in_$1 -i $2 -m mark --mark 0x0/$MMX_MASK -m comment --comment "$1" -j MARK --set-xmark $(mwan3_id2mask id MMX_MASK)/$MMX_MASK
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$IPT6 -D mwan3_ifaces_in -m mark --mark 0x0/$MMX_MASK -j mwan3_iface_in_$1 &> /dev/null
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$IPT6 -A mwan3_ifaces_in -m mark --mark 0x0/$MMX_MASK -j mwan3_iface_in_$1
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$IPT6 -F mwan3_iface_out_$1
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$IPT6 -A mwan3_iface_out_$1 -o $2 -m mark --mark 0x0/$MMX_MASK -m comment --comment "$1" -j MARK --set-xmark $(mwan3_id2mask id MMX_MASK)/$MMX_MASK
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$IPT6 -D mwan3_ifaces_out -m mark --mark 0x0/$MMX_MASK -j mwan3_iface_out_$1 &> /dev/null
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$IPT6 -A mwan3_ifaces_out -m mark --mark 0x0/$MMX_MASK -j mwan3_iface_out_$1
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fi
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}
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mwan3_delete_iface_iptables()
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{
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config_get family $1 family ipv4
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if [ "$family" == "ipv4" ]; then
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$IPT4 -D mwan3_ifaces_in -m mark --mark 0x0/$MMX_MASK -j mwan3_iface_in_$1 &> /dev/null
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$IPT4 -F mwan3_iface_in_$1 &> /dev/null
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$IPT4 -X mwan3_iface_in_$1 &> /dev/null
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$IPT4 -D mwan3_ifaces_out -m mark --mark 0x0/$MMX_MASK -j mwan3_iface_out_$1 &> /dev/null
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$IPT4 -F mwan3_iface_out_$1 &> /dev/null
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$IPT4 -X mwan3_iface_out_$1 &> /dev/null
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fi
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if [ "$family" == "ipv6" ]; then
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$IPT6 -D mwan3_ifaces_in -m mark --mark 0x0/$MMX_MASK -j mwan3_iface_in_$1 &> /dev/null
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$IPT6 -F mwan3_iface_in_$1 &> /dev/null
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$IPT6 -X mwan3_iface_in_$1 &> /dev/null
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$IPT6 -D mwan3_ifaces_out -m mark --mark 0x0/$MMX_MASK -j mwan3_iface_out_$1 &> /dev/null
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$IPT6 -F mwan3_iface_out_$1 &> /dev/null
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$IPT6 -X mwan3_iface_out_$1 &> /dev/null
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fi
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}
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mwan3_create_iface_route()
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{
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local id route_args
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config_get family $1 family ipv4
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mwan3_get_iface_id id $1
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[ -n "$id" ] || return 0
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if [ "$family" == "ipv4" ]; then
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if ubus call network.interface.${1}_4 status &>/dev/null; then
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network_get_gateway route_args ${1}_4
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else
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network_get_gateway route_args $1
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fi
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if [ -n "$route_args" -a "$route_args" != "0.0.0.0" ]; then
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route_args="via $route_args"
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else
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route_args=""
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fi
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$IP4 route flush table $id
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$IP4 route add table $id default $route_args dev $2
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fi
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if [ "$family" == "ipv6" ]; then
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if ubus call network.interface.${1}_6 status &>/dev/null; then
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network_get_gateway6 route_args ${1}_6
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else
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network_get_gateway6 route_args $1
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fi
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if [ -n "$route_args" -a "$route_args" != "::" ]; then
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route_args="via $route_args"
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else
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route_args=""
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fi
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$IP6 route flush table $id
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$IP6 route add table $id default $route_args dev $2
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fi
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}
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mwan3_delete_iface_route()
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{
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local id
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config_get family $1 family ipv4
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mwan3_get_iface_id id $1
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[ -n "$id" ] || return 0
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if [ "$family" == "ipv4" ]; then
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$IP4 route flush table $id
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fi
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if [ "$family" == "ipv6" ]; then
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$IP6 route flush table $id
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fi
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}
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mwan3_create_iface_rules()
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{
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local id family
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config_get family $1 family ipv4
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mwan3_get_iface_id id $1
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[ -n "$id" ] || return 0
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if [ "$family" == "ipv4" ]; then
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while [ -n "$($IP4 rule list | awk '$1 == "'$(($id+1000)):'"')" ]; do
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$IP4 rule del pref $(($id+1000))
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done
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while [ -n "$($IP4 rule list | awk '$1 == "'$(($id+2000)):'"')" ]; do
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$IP4 rule del pref $(($id+2000))
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done
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$IP4 rule add pref $(($id+1000)) iif $2 lookup main
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$IP4 rule add pref $(($id+2000)) fwmark $(mwan3_id2mask id MMX_MASK)/$MMX_MASK lookup $id
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fi
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if [ "$family" == "ipv6" ]; then
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while [ -n "$($IP6 rule list | awk '$1 == "'$(($id+1000)):'"')" ]; do
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$IP6 rule del pref $(($id+1000))
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done
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while [ -n "$($IP6 rule list | awk '$1 == "'$(($id+2000)):'"')" ]; do
|
|
$IP6 rule del pref $(($id+2000))
|
|
done
|
|
|
|
$IP6 rule add pref $(($id+1000)) iif $2 lookup main
|
|
$IP6 rule add pref $(($id+2000)) fwmark $(mwan3_id2mask id MMX_MASK)/$MMX_MASK lookup $id
|
|
fi
|
|
}
|
|
|
|
mwan3_delete_iface_rules()
|
|
{
|
|
local id family
|
|
|
|
config_get family $1 family ipv4
|
|
mwan3_get_iface_id id $1
|
|
|
|
[ -n "$id" ] || return 0
|
|
|
|
if [ "$family" == "ipv4" ]; then
|
|
|
|
while [ -n "$($IP4 rule list | awk '$1 == "'$(($id+1000)):'"')" ]; do
|
|
$IP4 rule del pref $(($id+1000))
|
|
done
|
|
|
|
while [ -n "$($IP4 rule list | awk '$1 == "'$(($id+2000)):'"')" ]; do
|
|
$IP4 rule del pref $(($id+2000))
|
|
done
|
|
fi
|
|
|
|
if [ "$family" == "ipv6" ]; then
|
|
|
|
while [ -n "$($IP6 rule list | awk '$1 == "'$(($id+1000)):'"')" ]; do
|
|
$IP6 rule del pref $(($id+1000))
|
|
done
|
|
|
|
while [ -n "$($IP6 rule list | awk '$1 == "'$(($id+2000)):'"')" ]; do
|
|
$IP6 rule del pref $(($id+2000))
|
|
done
|
|
fi
|
|
}
|
|
|
|
mwan3_delete_iface_ipset_entries()
|
|
{
|
|
local id setname entry
|
|
|
|
mwan3_get_iface_id id $1
|
|
|
|
[ -n "$id" ] || return 0
|
|
|
|
for setname in $(ipset -n list | grep ^mwan3_sticky_); do
|
|
for entry in $(ipset list $setname | grep "$(echo $(mwan3_id2mask id MMX_MASK) | awk '{ printf "0x%08x", $1; }')" | cut -d ' ' -f 1); do
|
|
$IPS del $setname $entry
|
|
done
|
|
done
|
|
}
|
|
|
|
mwan3_track()
|
|
{
|
|
local track_ip track_ips pid
|
|
|
|
mwan3_list_track_ips()
|
|
{
|
|
track_ips="$track_ips $1"
|
|
}
|
|
config_list_foreach $1 track_ip mwan3_list_track_ips
|
|
|
|
for pid in $(pgrep -f "mwan3track $1 $2"); do
|
|
kill -TERM "$pid" > /dev/null 2>&1
|
|
sleep 1
|
|
kill -KILL "$pid" > /dev/null 2>&1
|
|
done
|
|
if [ -n "$track_ips" ]; then
|
|
[ -x /usr/sbin/mwan3track ] && /usr/sbin/mwan3track "$1" "$2" "$3" "$4" $track_ips &
|
|
fi
|
|
}
|
|
|
|
mwan3_track_signal()
|
|
{
|
|
local pid
|
|
|
|
pid="$(pgrep -f "mwan3track $1 $2")"
|
|
if [ "${pid}" != "" ]; then
|
|
kill -USR1 "${pid}"
|
|
else
|
|
$LOG warn "Unable to send signal USR1 to mwan3track on interface $1 with pid ${pid}"
|
|
fi
|
|
}
|
|
|
|
mwan3_set_policy()
|
|
{
|
|
local iface_count id iface family metric probability weight
|
|
|
|
config_get iface $1 interface
|
|
config_get metric $1 metric 1
|
|
config_get weight $1 weight 1
|
|
|
|
[ -n "$iface" ] || return 0
|
|
[ "$metric" -gt $DEFAULT_LOWEST_METRIC ] && $LOG warn "Member interface $iface has >$DEFAULT_LOWEST_METRIC metric. Not appending to policy" && return 0
|
|
|
|
mwan3_get_iface_id id $iface
|
|
|
|
[ -n "$id" ] || return 0
|
|
|
|
config_get family $iface family ipv4
|
|
|
|
if [ "$family" == "ipv4" ]; then
|
|
|
|
if [ "$(mwan3_get_iface_hotplug_state $iface)" = "online" ]; then
|
|
if [ "$metric" -lt "$lowest_metric_v4" ]; then
|
|
|
|
total_weight_v4=$weight
|
|
$IPT4 -F mwan3_policy_$policy
|
|
$IPT4 -A mwan3_policy_$policy -m mark --mark 0x0/$MMX_MASK -m comment --comment "$iface $weight $weight" -j MARK --set-xmark $(mwan3_id2mask id MMX_MASK)/$MMX_MASK
|
|
|
|
lowest_metric_v4=$metric
|
|
|
|
elif [ "$metric" -eq "$lowest_metric_v4" ]; then
|
|
|
|
total_weight_v4=$(($total_weight_v4+$weight))
|
|
probability=$(($weight*1000/$total_weight_v4))
|
|
|
|
if [ "$probability" -lt 10 ]; then
|
|
probability="0.00$probability"
|
|
elif [ $probability -lt 100 ]; then
|
|
probability="0.0$probability"
|
|
elif [ $probability -lt 1000 ]; then
|
|
probability="0.$probability"
|
|
else
|
|
probability="1"
|
|
fi
|
|
|
|
probability="-m statistic --mode random --probability $probability"
|
|
|
|
$IPT4 -I mwan3_policy_$policy -m mark --mark 0x0/$MMX_MASK $probability -m comment --comment "$iface $weight $total_weight_v4" -j MARK --set-xmark $(mwan3_id2mask id MMX_MASK)/$MMX_MASK
|
|
fi
|
|
fi
|
|
fi
|
|
|
|
if [ "$family" == "ipv6" ]; then
|
|
|
|
if [ "$(mwan3_get_iface_hotplug_state $iface)" = "online" ]; then
|
|
if [ "$metric" -lt "$lowest_metric_v6" ]; then
|
|
|
|
total_weight_v6=$weight
|
|
$IPT6 -F mwan3_policy_$policy
|
|
$IPT6 -A mwan3_policy_$policy -m mark --mark 0x0/$MMX_MASK -m comment --comment "$iface $weight $weight" -j MARK --set-xmark $(mwan3_id2mask id MMX_MASK)/$MMX_MASK
|
|
|
|
lowest_metric_v6=$metric
|
|
|
|
elif [ "$metric" -eq "$lowest_metric_v6" ]; then
|
|
|
|
total_weight_v6=$(($total_weight_v6+$weight))
|
|
probability=$(($weight*1000/$total_weight_v6))
|
|
|
|
if [ "$probability" -lt 10 ]; then
|
|
probability="0.00$probability"
|
|
elif [ $probability -lt 100 ]; then
|
|
probability="0.0$probability"
|
|
elif [ $probability -lt 1000 ]; then
|
|
probability="0.$probability"
|
|
else
|
|
probability="1"
|
|
fi
|
|
|
|
probability="-m statistic --mode random --probability $probability"
|
|
|
|
$IPT6 -I mwan3_policy_$policy -m mark --mark 0x0/$MMX_MASK $probability -m comment --comment "$iface $weight $total_weight_v6" -j MARK --set-xmark $(mwan3_id2mask id MMX_MASK)/$MMX_MASK
|
|
fi
|
|
fi
|
|
fi
|
|
}
|
|
|
|
mwan3_create_policies_iptables()
|
|
{
|
|
local last_resort lowest_metric_v4 lowest_metric_v6 total_weight_v4 total_weight_v6 policy IPT
|
|
|
|
policy="$1"
|
|
|
|
config_get last_resort $1 last_resort unreachable
|
|
|
|
if [ "$1" != $(echo "$1" | cut -c1-15) ]; then
|
|
$LOG warn "Policy $1 exceeds max of 15 chars. Not setting policy" && return 0
|
|
fi
|
|
|
|
for IPT in "$IPT4" "$IPT6"; do
|
|
|
|
if ! $IPT -S mwan3_policy_$1 &> /dev/null; then
|
|
$IPT -N mwan3_policy_$1
|
|
fi
|
|
|
|
$IPT -F mwan3_policy_$1
|
|
|
|
case "$last_resort" in
|
|
blackhole)
|
|
$IPT -A mwan3_policy_$1 -m mark --mark 0x0/$MMX_MASK -m comment --comment "blackhole" -j MARK --set-xmark $MMX_BLACKHOLE/$MMX_MASK
|
|
;;
|
|
default)
|
|
$IPT -A mwan3_policy_$1 -m mark --mark 0x0/$MMX_MASK -m comment --comment "default" -j MARK --set-xmark $MMX_DEFAULT/$MMX_MASK
|
|
;;
|
|
*)
|
|
$IPT -A mwan3_policy_$1 -m mark --mark 0x0/$MMX_MASK -m comment --comment "unreachable" -j MARK --set-xmark $MMX_UNREACHABLE/$MMX_MASK
|
|
;;
|
|
esac
|
|
done
|
|
|
|
lowest_metric_v4=$DEFAULT_LOWEST_METRIC
|
|
total_weight_v4=0
|
|
|
|
lowest_metric_v6=$DEFAULT_LOWEST_METRIC
|
|
total_weight_v6=0
|
|
|
|
config_list_foreach $1 use_member mwan3_set_policy
|
|
}
|
|
|
|
mwan3_set_policies_iptables()
|
|
{
|
|
config_foreach mwan3_create_policies_iptables policy
|
|
}
|
|
|
|
mwan3_set_sticky_iptables()
|
|
{
|
|
local id iface
|
|
|
|
for iface in $($IPT4 -S $policy | cut -s -d'"' -f2 | awk '{print $1}'); do
|
|
|
|
if [ "$iface" == "$1" ]; then
|
|
|
|
mwan3_get_iface_id id $1
|
|
|
|
[ -n "$id" ] || return 0
|
|
|
|
for IPT in "$IPT4" "$IPT6"; do
|
|
if [ -n "$($IPT -S mwan3_iface_in_$1 2> /dev/null)" -a -n "$($IPT -S mwan3_iface_out_$1 2> /dev/null)" ]; then
|
|
$IPT -I mwan3_rule_$rule -m mark --mark $(mwan3_id2mask id MMX_MASK)/$MMX_MASK -m set ! --match-set mwan3_sticky_$rule src,src -j MARK --set-xmark 0x0/$MMX_MASK
|
|
$IPT -I mwan3_rule_$rule -m mark --mark 0/$MMX_MASK -j MARK --set-xmark $(mwan3_id2mask id MMX_MASK)/$MMX_MASK
|
|
fi
|
|
done
|
|
fi
|
|
done
|
|
}
|
|
|
|
mwan3_set_user_iptables_rule()
|
|
{
|
|
local ipset family proto policy src_ip src_port sticky dest_ip dest_port use_policy timeout rule policy IPT
|
|
|
|
rule="$1"
|
|
|
|
config_get sticky $1 sticky 0
|
|
config_get timeout $1 timeout 600
|
|
config_get ipset $1 ipset
|
|
config_get proto $1 proto all
|
|
config_get src_ip $1 src_ip 0.0.0.0/0
|
|
config_get src_port $1 src_port 0:65535
|
|
config_get dest_ip $1 dest_ip 0.0.0.0/0
|
|
config_get dest_port $1 dest_port 0:65535
|
|
config_get use_policy $1 use_policy
|
|
config_get family $1 family any
|
|
|
|
if [ "$1" != $(echo "$1" | cut -c1-15) ]; then
|
|
$LOG warn "Rule $1 exceeds max of 15 chars. Not setting rule" && return 0
|
|
fi
|
|
|
|
if [ -n "$ipset" ]; then
|
|
ipset="-m set --match-set $ipset dst"
|
|
fi
|
|
|
|
if [ -n "$use_policy" ]; then
|
|
if [ "$use_policy" == "default" ]; then
|
|
policy="MARK --set-xmark $MMX_DEFAULT/$MMX_MASK"
|
|
elif [ "$use_policy" == "unreachable" ]; then
|
|
policy="MARK --set-xmark $MMX_UNREACHABLE/$MMX_MASK"
|
|
elif [ "$use_policy" == "blackhole" ]; then
|
|
policy="MARK --set-xmark $MMX_BLACKHOLE/$MMX_MASK"
|
|
else
|
|
if [ "$sticky" -eq 1 ]; then
|
|
|
|
policy="mwan3_policy_$use_policy"
|
|
|
|
for IPT in "$IPT4" "$IPT6"; do
|
|
if ! $IPT -S $policy &> /dev/null; then
|
|
$IPT -N $policy
|
|
fi
|
|
|
|
if ! $IPT -S mwan3_rule_$1 &> /dev/null; then
|
|
$IPT -N mwan3_rule_$1
|
|
fi
|
|
|
|
$IPT -F mwan3_rule_$1
|
|
done
|
|
|
|
$IPS -! create mwan3_sticky_v4_$rule hash:ip,mark markmask $MMX_MASK timeout $timeout
|
|
$IPS -! create mwan3_sticky_v6_$rule hash:ip,mark markmask $MMX_MASK timeout $timeout family inet6
|
|
$IPS -! create mwan3_sticky_$rule list:set
|
|
$IPS -! add mwan3_sticky_$rule mwan3_sticky_v4_$rule
|
|
$IPS -! add mwan3_sticky_$rule mwan3_sticky_v6_$rule
|
|
|
|
config_foreach mwan3_set_sticky_iptables interface
|
|
|
|
for IPT in "$IPT4" "$IPT6"; do
|
|
$IPT -A mwan3_rule_$1 -m mark --mark 0/$MMX_MASK -j $policy
|
|
$IPT -A mwan3_rule_$1 -m mark ! --mark 0xfc00/0xfc00 -j SET --del-set mwan3_sticky_$rule src,src
|
|
$IPT -A mwan3_rule_$1 -m mark ! --mark 0xfc00/0xfc00 -j SET --add-set mwan3_sticky_$rule src,src
|
|
done
|
|
|
|
policy="mwan3_rule_$1"
|
|
else
|
|
policy="mwan3_policy_$use_policy"
|
|
|
|
for IPT in "$IPT4" "$IPT6"; do
|
|
if ! $IPT -S $policy &> /dev/null; then
|
|
$IPT -N $policy
|
|
fi
|
|
done
|
|
|
|
fi
|
|
fi
|
|
|
|
if [ "$family" == "any" ]; then
|
|
|
|
for IPT in "$IPT4" "$IPT6"; do
|
|
case $proto in
|
|
tcp|udp)
|
|
$IPT -A mwan3_rules -p $proto -s $src_ip -d $dest_ip $ipset -m multiport --sports $src_port -m multiport --dports $dest_port -m mark --mark 0/$MMX_MASK -m comment --comment "$1" -j $policy &> /dev/null
|
|
;;
|
|
*)
|
|
$IPT -A mwan3_rules -p $proto -s $src_ip -d $dest_ip $ipset -m mark --mark 0/$MMX_MASK -m comment --comment "$1" -j $policy &> /dev/null
|
|
;;
|
|
esac
|
|
done
|
|
|
|
elif [ "$family" == "ipv4" ]; then
|
|
|
|
case $proto in
|
|
tcp|udp)
|
|
$IPT4 -A mwan3_rules -p $proto -s $src_ip -d $dest_ip $ipset -m multiport --sports $src_port -m multiport --dports $dest_port -m mark --mark 0/$MMX_MASK -m comment --comment "$1" -j $policy &> /dev/null
|
|
;;
|
|
*)
|
|
$IPT4 -A mwan3_rules -p $proto -s $src_ip -d $dest_ip $ipset -m mark --mark 0/$MMX_MASK -m comment --comment "$1" -j $policy &> /dev/null
|
|
;;
|
|
esac
|
|
|
|
elif [ "$family" == "ipv6" ]; then
|
|
|
|
case $proto in
|
|
tcp|udp)
|
|
$IPT6 -A mwan3_rules -p $proto -s $src_ip -d $dest_ip $ipset -m multiport --sports $src_port -m multiport --dports $dest_port -m mark --mark 0/$MMX_MASK -m comment --comment "$1" -j $policy &> /dev/null
|
|
;;
|
|
*)
|
|
$IPT6 -A mwan3_rules -p $proto -s $src_ip -d $dest_ip $ipset -m mark --mark 0/$MMX_MASK -m comment --comment "$1" -j $policy &> /dev/null
|
|
;;
|
|
esac
|
|
fi
|
|
fi
|
|
}
|
|
|
|
mwan3_set_user_rules()
|
|
{
|
|
local IPT
|
|
|
|
for IPT in "$IPT4" "$IPT6"; do
|
|
|
|
if ! $IPT -S mwan3_rules &> /dev/null; then
|
|
$IPT -N mwan3_rules
|
|
fi
|
|
|
|
$IPT -F mwan3_rules
|
|
done
|
|
|
|
config_foreach mwan3_set_user_iptables_rule rule
|
|
}
|
|
|
|
mwan3_set_iface_hotplug_state() {
|
|
local iface=$1
|
|
local state=$2
|
|
|
|
echo -n $state > $MWAN3_STATUS_DIR/iface_state/$iface
|
|
}
|
|
|
|
mwan3_get_iface_hotplug_state() {
|
|
local iface=$1
|
|
|
|
cat $MWAN3_STATUS_DIR/iface_state/$iface 2>/dev/null || echo "unknown"
|
|
}
|
|
|
|
mwan3_report_iface_status()
|
|
{
|
|
local device result track_ips tracking IP IPT
|
|
|
|
mwan3_get_iface_id id $1
|
|
network_get_device device $1
|
|
config_get enabled "$1" enabled 0
|
|
config_get family "$1" family ipv4
|
|
|
|
if [ "$family" == "ipv4" ]; then
|
|
IP="$IP4"
|
|
IPT="$IPT4"
|
|
fi
|
|
|
|
if [ "$family" == "ipv6" ]; then
|
|
IP="$IP6"
|
|
IPT="$IPT6"
|
|
fi
|
|
|
|
if [ -z "$id" -o -z "$device" ]; then
|
|
result="unknown"
|
|
elif [ -n "$($IP rule | awk '$1 == "'$(($id+1000)):'"')" -a -n "$($IP rule | awk '$1 == "'$(($id+2000)):'"')" -a -n "$($IPT -S mwan3_iface_in_$1 2> /dev/null)" -a -n "$($IPT -S mwan3_iface_out_$1 2> /dev/null)" -a -n "$($IP route list table $id default dev $device 2> /dev/null)" ]; then
|
|
result="$(mwan3_get_iface_hotplug_state $1)"
|
|
elif [ -n "$($IP rule | awk '$1 == "'$(($id+1000)):'"')" -o -n "$($IP rule | awk '$1 == "'$(($id+2000)):'"')" -o -n "$($IPT -S mwan3_iface_in_$1 2> /dev/null)" -o -n "$($IPT -S mwan3_iface_out_$1 2> /dev/null)" -o -n "$($IP route list table $id default dev $device 2> /dev/null)" ]; then
|
|
result="error"
|
|
elif [ "$enabled" == "1" ]; then
|
|
result="offline"
|
|
else
|
|
result="disabled"
|
|
fi
|
|
|
|
mwan3_list_track_ips()
|
|
{
|
|
track_ips="$1 $track_ips"
|
|
}
|
|
config_list_foreach $1 track_ip mwan3_list_track_ips
|
|
|
|
if [ -n "$track_ips" ]; then
|
|
if [ -n "$(pgrep -f "mwan3track $1 $device")" ]; then
|
|
tracking="active"
|
|
else
|
|
tracking="down"
|
|
fi
|
|
else
|
|
tracking="not enabled"
|
|
fi
|
|
|
|
echo " interface $1 is $result and tracking is $tracking"
|
|
}
|
|
|
|
mwan3_report_policies_v4()
|
|
{
|
|
local percent policy share total_weight weight iface
|
|
|
|
for policy in $($IPT4 -S | awk '{print $2}' | grep mwan3_policy_ | sort -u); do
|
|
echo "$policy:" | sed 's/mwan3_policy_//'
|
|
|
|
[ -n "$total_weight" ] || total_weight=$($IPT4 -S $policy | cut -s -d'"' -f2 | head -1 | awk '{print $3}')
|
|
|
|
if [ ! -z "${total_weight##*[!0-9]*}" ]; then
|
|
for iface in $($IPT4 -S $policy | cut -s -d'"' -f2 | awk '{print $1}'); do
|
|
weight=$($IPT4 -S $policy | cut -s -d'"' -f2 | awk '$1 == "'$iface'"' | awk '{print $2}')
|
|
percent=$(($weight*100/$total_weight))
|
|
echo " $iface ($percent%)"
|
|
done
|
|
else
|
|
echo " $($IPT4 -S $policy | sed '/.*--comment \([^ ]*\) .*$/!d;s//\1/;q')"
|
|
fi
|
|
|
|
unset total_weight
|
|
|
|
echo -e
|
|
done
|
|
}
|
|
|
|
mwan3_report_policies_v6()
|
|
{
|
|
local percent policy share total_weight weight iface
|
|
|
|
for policy in $($IPT6 -S | awk '{print $2}' | grep mwan3_policy_ | sort -u); do
|
|
echo "$policy:" | sed 's/mwan3_policy_//'
|
|
|
|
[ -n "$total_weight" ] || total_weight=$($IPT6 -S $policy | cut -s -d'"' -f2 | head -1 | awk '{print $3}')
|
|
|
|
if [ ! -z "${total_weight##*[!0-9]*}" ]; then
|
|
for iface in $($IPT6 -S $policy | cut -s -d'"' -f2 | awk '{print $1}'); do
|
|
weight=$($IPT6 -S $policy | cut -s -d'"' -f2 | awk '$1 == "'$iface'"' | awk '{print $2}')
|
|
percent=$(($weight*100/$total_weight))
|
|
echo " $iface ($percent%)"
|
|
done
|
|
else
|
|
echo " $($IPT6 -S $policy | sed '/.*--comment \([^ ]*\) .*$/!d;s//\1/;q')"
|
|
fi
|
|
|
|
unset total_weight
|
|
|
|
echo -e
|
|
done
|
|
}
|
|
|
|
mwan3_report_connected_v4()
|
|
{
|
|
local address
|
|
|
|
if [ -n "$($IPT4 -S mwan3_connected 2> /dev/null)" ]; then
|
|
for address in $($IPS list mwan3_connected_v4 | egrep '[0-9]{1,3}(\.[0-9]{1,3}){3}'); do
|
|
echo " $address"
|
|
done
|
|
fi
|
|
}
|
|
|
|
mwan3_report_connected_v6()
|
|
{
|
|
local address
|
|
|
|
if [ -n "$($IPT6 -S mwan3_connected 2> /dev/null)" ]; then
|
|
for address in $($IPS list mwan3_connected_v6 | egrep '([0-9a-fA-F]{1,4}:){7,7}[0-9a-fA-F]{1,4}|([0-9a-fA-F]{1,4}:){1,7}:|([0-9a-fA-F]{1,4}:){1,6}:[0-9a-fA-F]{1,4}|([0-9a-fA-F]{1,4}:){1,5}(:[0-9a-fA-F]{1,4}){1,2}|([0-9a-fA-F]{1,4}:){1,4}(:[0-9a-fA-F]{1,4}){1,3}|([0-9a-fA-F]{1,4}:){1,3}(:[0-9a-fA-F]{1,4}){1,4}|([0-9a-fA-F]{1,4}:){1,2}(:[0-9a-fA-F]{1,4}){1,5}|[0-9a-fA-F]{1,4}:((:[0-9a-fA-F]{1,4}){1,6})|:((:[0-9a-fA-F]{1,4}){1,7}|:)|fe80:(:[0-9a-fA-F]{0,4}){0,4}%[0-9a-zA-Z]{1,}|::(ffff(:0{1,4}){0,1}:){0,1}((25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9])\.){3,3}(25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9])|([0-9a-fA-F]{1,4}:){1,4}:((25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9])\.){3,3}(25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9])'); do
|
|
echo " $address"
|
|
done
|
|
fi
|
|
}
|
|
|
|
mwan3_report_rules_v4()
|
|
{
|
|
if [ -n "$($IPT4 -S mwan3_rules 2> /dev/null)" ]; then
|
|
$IPT4 -L mwan3_rules -n -v 2> /dev/null | tail -n+3 | sed 's/mark.*//' | sed 's/mwan3_policy_/- /' | sed 's/mwan3_rule_/S /'
|
|
fi
|
|
}
|
|
|
|
mwan3_report_rules_v6()
|
|
{
|
|
if [ -n "$($IPT6 -S mwan3_rules 2> /dev/null)" ]; then
|
|
$IPT6 -L mwan3_rules -n -v 2> /dev/null | tail -n+3 | sed 's/mark.*//' | sed 's/mwan3_policy_/- /' | sed 's/mwan3_rule_/S /'
|
|
fi
|
|
}
|
|
|
|
mwan3_flush_conntrack()
|
|
{
|
|
local flush_conntrack
|
|
|
|
config_get flush_conntrack $1 flush_conntrack never
|
|
|
|
if [ -e "$CONNTRACK_FILE" ]; then
|
|
case $flush_conntrack in
|
|
ifup)
|
|
[ "$3" = "ifup" ] && {
|
|
echo f > ${CONNTRACK_FILE}
|
|
$LOG info "connection tracking flushed on interface $1 ($2) $3"
|
|
}
|
|
;;
|
|
ifdown)
|
|
[ "$3" = "ifdown" ] && {
|
|
echo f > ${CONNTRACK_FILE}
|
|
$LOG info "connection tracking flushed on interface $1 ($2) $3"
|
|
}
|
|
;;
|
|
always)
|
|
echo f > ${CONNTRACK_FILE}
|
|
$LOG info "connection tracking flushed on interface $1 ($2) $3"
|
|
;;
|
|
never)
|
|
$LOG info "connection tracking not flushed on interface $1 ($2) $3"
|
|
;;
|
|
esac
|
|
else
|
|
$LOG warning "connection tracking not enabled"
|
|
fi
|
|
}
|
|
|
|
mwan3_track_clean()
|
|
{
|
|
rm -rf "$MWAN3_STATUS_DIR/${1}" &> /dev/null
|
|
[ -d "$MWAN3_STATUS_DIR" ] && {
|
|
if [ -z "$(ls -A "$MWAN3_STATUS_DIR")" ]; then
|
|
rm -rf "$MWAN3_STATUS_DIR"
|
|
fi
|
|
}
|
|
}
|