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Add program pieces
git-svn-id: https://shorewall.svn.sourceforge.net/svnroot/shorewall/trunk@5494 fbd18981-670d-0410-9b5c-8dc0c1a9a2bb
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teastep
387
New/prog.functions
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387
New/prog.functions
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@ -0,0 +1,387 @@
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#!/bin/sh
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#
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# Clear Proxy Arp
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#
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delete_proxyarp() {
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if [ -f ${VARDIR}/proxyarp ]; then
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while read address interface external haveroute; do
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qt arp -i $external -d $address pub
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[ -z "${haveroute}${NOROUTES}" ] && qt ip route del $address dev $interface
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done < ${VARDIR}/proxyarp
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for f in /proc/sys/net/ipv4/conf/*; do
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[ -f $f/proxy_arp ] && echo 0 > $f/proxy_arp
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done
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fi
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rm -f ${VARDIR}/proxyarp
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}
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#
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# Stop/restore the firewall after an error or because of a "stop" or "clear" command
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#
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stop_firewall() {
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deletechain() {
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qt $IPTABLES -L $1 -n && qt $IPTABLES -F $1 && qt $IPTABLES -X $1
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}
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deleteallchains() {
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$IPTABLES -F
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$IPTABLES -X
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}
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setcontinue() {
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$IPTABLES -A $1 -m state --state ESTABLISHED,RELATED -j ACCEPT
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}
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delete_nat() {
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$IPTABLES -t nat -F
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$IPTABLES -t nat -X
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if [ -f ${VARDIR}/nat ]; then
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while read external interface; do
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del_ip_addr $external $interface
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done < ${VARDIR}/nat
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rm -f ${VARDIR}/nat
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fi
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}
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case $COMMAND in
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stop|clear)
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;;
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*)
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set +x
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case $COMMAND in
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start)
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logger -p kern.err "ERROR:$PRODUCT start failed"
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;;
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restart)
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logger -p kern.err "ERROR:$PRODUCT restart failed"
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;;
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restore)
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logger -p kern.err "ERROR:$PRODUCT restore failed"
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;;
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esac
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if [ "$RESTOREFILE" = NONE ]; then
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COMMAND=clear
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clear_firewall
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echo "$PRODUCT Cleared"
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kill $$
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exit 2
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else
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RESTOREPATH=${VARDIR}/$RESTOREFILE
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if [ -x $RESTOREPATH ]; then
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if [ -x ${RESTOREPATH}-ipsets ]; then
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progress_message2 Restoring Ipsets...
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#
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# We must purge iptables to be sure that there are no
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# references to ipsets
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#
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for table in mangle nat filter; do
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$IPTABLES -t $table -F
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$IPTABLES -t $table -X
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done
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${RESTOREPATH}-ipsets
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fi
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echo Restoring ${PRODUCT:=Shorewall}...
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if $RESTOREPATH restore; then
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echo "$PRODUCT restored from $RESTOREPATH"
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set_state "Started"
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else
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set_state "Unknown"
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fi
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kill $$
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exit 2
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fi
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fi
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;;
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esac
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set_state "Stopping"
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STOPPING="Yes"
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TERMINATOR=
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deletechain shorewall
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determine_capabilities
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run_stop_exit
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if [ -n "$MANGLE_ENABLED" ]; then
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run_iptables -t mangle -F
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run_iptables -t mangle -X
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for chain in PREROUTING INPUT FORWARD POSTROUTING; do
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qt $IPTABLES -t mangle -P $chain ACCEPT
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done
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fi
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if [ -n "$RAW_TABLE" ]; then
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run_iptables -t raw -F
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run_iptables -t raw -X
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for chain in PREROUTING OUTPUT; do
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qt $IPTABLES -t raw -P $chain ACCEPT
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done
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fi
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if [ -n "$NAT_ENABLED" ]; then
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delete_nat
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for chain in PREROUTING POSTROUTING OUTPUT; do
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qt $IPTABLES -t nat -P $chain ACCEPT
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done
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fi
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delete_proxyarp
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[ -n "$CLEAR_TC" ] && delete_tc1
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[ -n "$DISABLE_IPV6" ] && disable_ipv6
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undo_routing
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restore_default_route
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if [ -n "$CRITICALHOSTS" ]; then
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if [ -z "$ADMINISABSENTMINDED" ]; then
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for chain in INPUT OUTPUT; do
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setpolicy $chain ACCEPT
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done
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setpolicy FORWARD DROP
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deleteallchains
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for host in $CRITICALHOSTS; do
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interface=${host%:*}
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networks=${host#*:}
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$IPTABLES -A INPUT -i $interface $(source_ip_range $networks) -j ACCEPT
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$IPTABLES -A OUTPUT -o $interface $(dest_ip_range $networks) -j ACCEPT
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done
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for chain in INPUT OUTPUT; do
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setpolicy $chain DROP
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done
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else
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for chain in INPUT OUTPUT; do
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setpolicy $chain ACCEPT
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done
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setpolicy FORWARD DROP
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deleteallchains
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for host in $CRITICALHOSTS; do
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interface=${host%:*}
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networks=${host#*:}
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$IPTABLES -A INPUT -i $interface $(source_ip_range $networks) -j ACCEPT
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$IPTABLES -A OUTPUT -o $interface $(dest_ip_range $networks) -j ACCEPT
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done
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setpolicy INPUT DROP
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for chain in INPUT FORWARD; do
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setcontinue $chain
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done
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fi
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elif [ -z "$ADMINISABSENTMINDED" ]; then
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for chain in INPUT OUTPUT FORWARD; do
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setpolicy $chain DROP
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done
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deleteallchains
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else
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for chain in INPUT FORWARD; do
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setpolicy $chain DROP
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done
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setpolicy OUTPUT ACCEPT
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deleteallchains
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for chain in INPUT FORWARD; do
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setcontinue $chain
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done
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fi
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$IPTABLES -A INPUT -i lo -j ACCEPT
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[ -z "$ADMINISABSENTMINDED" ] && $IPTABLES -A OUTPUT -o lo -j ACCEPT
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for interface in $DHCP_INTERFACES; do
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$IPTABLES -A INPUT -p udp -i $interface --dport 67:68 -j ACCEPT
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[ -z "$ADMINISABSENTMINDED" ] && $IPTABLES -A OUTPUT -p udp -o $interface --dport 67:68 -j ACCEPT
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#
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# This might be a bridge
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#
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$IPTABLES -A FORWARD -p udp -i $interface -o $interface --dport 67:68 -j ACCEPT
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done
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case "$IP_FORWARDING" in
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On|on|ON)
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echo 1 > /proc/sys/net/ipv4/ip_forward
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progress_message2 IP Forwarding Enabled
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;;
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Off|off|OFF)
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echo 0 > /proc/sys/net/ipv4/ip_forward
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progress_message2 IP Forwarding Disabled!
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;;
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esac
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run_stopped_exit
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set_state "Stopped"
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logger -p kern.info "$PRODUCT Stopped"
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case $COMMAND in
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stop|clear)
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;;
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*)
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#
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# The firewall is being stopped when we were trying to do something
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# else. Remove the lock file and Kill the shell in case we're in a
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# subshell
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#
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kill $$
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;;
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esac
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}
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#
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# Set policy of chain $1 to $2
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#
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setpolicy() {
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$IPTABLES -P $1 $2
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}
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#
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# Remove all Shorewall-added rules
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#
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clear_firewall() {
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stop_firewall
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setpolicy INPUT ACCEPT
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setpolicy FORWARD ACCEPT
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setpolicy OUTPUT ACCEPT
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run_iptables -F
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echo 1 > /proc/sys/net/ipv4/ip_forward
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if [ -n "$DISABLE_IPV6" ]; then
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if qt mywhich ip6tables; then
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ip6tables -P INPUT ACCEPT 2> /dev/null
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ip6tables -P OUTPUT ACCEPT 2> /dev/null
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ip6tables -P FORWARD ACCEPT 2> /dev/null
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fi
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fi
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run_clear_exit
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set_state "Cleared"
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logger -p kern.info "$PRODUCT Cleared"
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}
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#
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# Issue a message and stop/restore the firewall
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#
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fatal_error()
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{
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echo " ERROR: $@" >&2
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stop_firewall
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exit 2
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}
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#
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# Issue a message and stop
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#
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startup_error() # $* = Error Message
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{
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echo " ERROR: $@" >&2
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case $COMMAND in
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start)
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logger -p kern.err "ERROR:$PRODUCT start failed"
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;;
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restart)
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logger -p kern.err "ERROR:$PRODUCT restart failed"
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;;
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restore)
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logger -p kern.err "ERROR:$PRODUCT restore failed"
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;;
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esac
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kill $$
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exit 2
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}
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#
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# Run iptables and if an error occurs, stop/restore the firewall
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#
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run_iptables()
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{
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if [ -n "$COMMENT" ]; then
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$IPTABLES $@ -m comment --comment "$COMMENT"
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else
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$IPTABLES $@
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fi
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if [ $? -ne 0 ]; then
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error_message "ERROR: Command \"$IPTABLES $@\" Failed"
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stop_firewall
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exit 2
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fi
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}
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#
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# Run iptables and if an error occurs, stop/restore the firewall
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#
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run_ip()
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{
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if ! ip $@; then
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error_message "ERROR: Command \"ip $@\" Failed"
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stop_firewall
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exit 2
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fi
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}
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#
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# Run tc and if an error occurs, stop/restore the firewall
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#
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run_tc() {
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if ! tc $@ ; then
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error_message "ERROR: Command \"tc $@\" Failed"
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stop_firewall
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exit 2
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fi
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}
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#
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# Functions to appease unconverted extension scripts
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#
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save_command()
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{
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return 0
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}
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run_and_save_command() {
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eval $@
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}
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ensure_and_save_command() {
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eval $@ || fatal_error "Command \"$@\" failed"
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}
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