mirror of
https://gitlab.com/shorewall/code.git
synced 2024-12-24 23:28:59 +01:00
492 lines
9.8 KiB
Plaintext
492 lines
9.8 KiB
Plaintext
###############################################################################
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# Code imported from /usr/share/shorewall/prog.footer
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###############################################################################
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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 -4 route del $address dev $interface
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f=/proc/sys/net/ipv4/conf/$interface/proxy_arp
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[ -f $f ] && echo 0 > $f
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done < ${VARDIR}/proxyarp
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fi
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rm -f ${VARDIR}/proxyarp
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}
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#
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# Remove all Shorewall-added rules
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#
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clear_firewall() {
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stop_firewall
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setpolicy INPUT ACCEPT
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setpolicy FORWARD ACCEPT
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setpolicy OUTPUT ACCEPT
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run_iptables -F
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echo 1 > /proc/sys/net/ipv4/ip_forward
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if [ -n "$DISABLE_IPV6" ]; then
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if [ -x $IPTABLES ]; then
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$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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if [ $LOG_VERBOSE -gt 1 ]; then
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timestamp="$(date +'%_b %d %T') "
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echo "${timestamp} ERROR: $@" >> $STARTUP_LOG
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fi
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stop_firewall
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[ -n "$TEMPFILE" ] && rm -f $TEMPFILE
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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: $@: Firewall state not changed" >&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:Firewall state not changed"
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;;
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restart)
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logger -p kern.err "ERROR:$PRODUCT restart failed:Firewall state not changed"
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;;
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restore)
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logger -p kern.err "ERROR:$PRODUCT restore failed:Firewall state not changed"
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;;
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esac
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if [ $LOG_VERBOSE -gt 1 ]; then
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timestamp="$(date +'%_b %d %T') "
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case $COMMAND in
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start)
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echo "${timestamp} ERROR:$PRODUCT start failed:Firewall state not changed" >> $STARTUP_LOG
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;;
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restart)
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echo "${timestamp} ERROR:$PRODUCT restart failed:Firewall state not changed" >> $STARTUP_LOG
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;;
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restore)
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echo "${timestamp} ERROR:$PRODUCT restore failed:Firewall state not changed" >> $STARTUP_LOG
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;;
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esac
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fi
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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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local status
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while [ 1 ]; do
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$IPTABLES $@
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status=$?
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[ $status -ne 4 ] && break
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done
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if [ $status -ne 0 ]; then
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error_message "ERROR: Command \"$IPTABLES $@\" Failed"
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stop_firewall
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exit 2
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fi
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}
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#
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# Run iptables retrying exit status 4
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#
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do_iptables()
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{
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local status
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while [ 1 ]; do
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$IPTABLES $@
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status=$?
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[ $status -ne 4 ] && return $status;
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done
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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 -4 $@; then
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error_message "ERROR: Command \"$IP -4 $@\" 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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# Restore the rules generated by 'drop','reject','logdrop', etc.
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#
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restore_dynamic_rules() {
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if [ -f ${VARDIR}/save ]; then
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progress_message2 "Setting up dynamic rules..."
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rangematch='source IP range'
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while read target ignore1 ignore2 address ignore3 rest; do
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case $target in
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DROP|reject|logdrop|logreject)
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case $rest in
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$rangematch*)
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run_iptables -A dynamic -m iprange --src-range ${rest#source IP range} -j $target
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;;
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*)
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if [ -z "$rest" ]; then
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run_iptables -A dynamic -s $address -j $target
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else
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error_message "WARNING: Unable to restore dynamic rule \"$target $ignore1 $ignore2 $address $ignore3 $rest\""
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fi
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;;
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esac
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;;
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esac
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done < ${VARDIR}/save
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fi
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}
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#
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# Get a list of all configured broadcast addresses on the system
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#
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get_all_bcasts()
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{
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$IP -f inet addr show 2> /dev/null | grep 'inet.*brd' | grep -v '/32 ' | sed 's/inet.*brd //; s/scope.*//;' | sort -u
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}
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#
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# Run the .iptables_restore_input as a set of discrete iptables commands
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#
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debug_restore_input() {
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local first second rest table chain
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#
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# Clear the ruleset
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#
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qt1 $IPTABLES -t mangle -F
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qt1 $IPTABLES -t mangle -X
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for chain in PREROUTING INPUT FORWARD POSTROUTING; do
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qt1 $IPTABLES -t mangle -P $chain ACCEPT
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done
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qt1 $IPTABLES -t raw -F
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qt1 $IPTABLES -t raw -X
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for chain in PREROUTING OUTPUT; do
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qt1 $IPTABLES -t raw -P $chain ACCEPT
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done
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run_iptables -t nat -F
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run_iptables -t nat -X
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for chain in PREROUTING POSTROUTING OUTPUT; do
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qt1 $IPTABLES -t nat -P $chain ACCEPT
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done
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qt1 $IPTABLES -t filter -F
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qt1 $IPTABLES -t filter -X
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for chain in INPUT FORWARD OUTPUT; do
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qt1 $IPTABLES -t filter -P $chain -P ACCEPT
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done
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while read first second rest; do
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case $first in
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-*)
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#
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# We can't call run_iptables() here because the rules may contain quoted strings
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#
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eval $IPTABLES -t $table $first $second $rest
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if [ $? -ne 0 ]; then
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error_message "ERROR: Command \"$IPTABLES $first $second $rest\" Failed"
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stop_firewall
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exit 2
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fi
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;;
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:*)
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chain=${first#:}
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if [ "x$second" = x- ]; then
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do_iptables -t $table -N $chain
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else
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do_iptables -t $table -P $chain $second
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fi
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if [ $? -ne 0 ]; then
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error_message "ERROR: Command \"$IPTABLES $first $second $rest\" 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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# This grotesque hack with the table names works around a bug/feature with ash
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#
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'*'raw)
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table=raw
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;;
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'*'mangle)
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table=mangle
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;;
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'*'nat)
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table=nat
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;;
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'*'filter)
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table=filter
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;;
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esac
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done
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}
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#
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# Give Usage Information
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#
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usage() {
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echo "Usage: $0 [ -q ] [ -v ] [ -n ] [ start|stop|clear|reset|refresh|restart|status|version ]"
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exit $1
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}
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################################################################################
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# E X E C U T I O N B E G I N S H E R E #
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################################################################################
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#
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# Start trace if first arg is "debug" or "trace"
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#
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if [ $# -gt 1 ]; then
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if [ "x$1" = "xtrace" ]; then
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set -x
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shift
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elif [ "x$1" = "xdebug" ]; then
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DEBUG=Yes
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shift
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fi
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fi
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initialize
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if [ -n "$STARTUP_LOG" ]; then
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if [ ${SHOREWALL_INIT_SCRIPT:-0} -eq 1 ]; then
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#
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# We're being run by a startup script that isn't redirecting STDOUT
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# Redirect it to the log
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#
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exec 2>>$STARTUP_LOG
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fi
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fi
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finished=0
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while [ $finished -eq 0 -a $# -gt 0 ]; do
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option=$1
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case $option in
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-*)
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option=${option#-}
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[ -z "$option" ] && usage 1
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while [ -n "$option" ]; do
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case $option in
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v*)
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VERBOSE=$(($VERBOSE + 1 ))
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option=${option#v}
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;;
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q*)
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VERBOSE=$(($VERBOSE - 1 ))
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option=${option#q}
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;;
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n*)
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NOROUTES=Yes
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option=${option#n}
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;;
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*)
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usage 1
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;;
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esac
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done
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shift
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;;
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*)
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finished=1
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;;
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esac
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done
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COMMAND="$1"
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[ -n "${PRODUCT:=Shorewall}" ]
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case "$COMMAND" in
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start)
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[ $# -ne 1 ] && usage 2
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if shorewall_is_started; then
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error_message "$PRODUCT is already Running"
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status=0
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else
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progress_message3 "Starting $PRODUCT...."
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define_firewall
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status=$?
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[ -n "$SUBSYSLOCK" -a $status -eq 0 ] && touch $SUBSYSLOCK
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progress_message3 "done."
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fi
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;;
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stop)
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[ $# -ne 1 ] && usage 2
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progress_message3 "Stopping $PRODUCT...."
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stop_firewall
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status=0
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[ -n "$SUBSYSLOCK" ] && rm -f $SUBSYSLOCK
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progress_message3 "done."
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;;
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reset)
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if ! shorewall_is_started ; then
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error_message "$PRODUCT is not running"
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status=2
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elif [ $# -eq 1 ]; then
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$IPTABLES -Z
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$IPTABLES -t nat -Z
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$IPTABLES -t mangle -Z
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date > ${VARDIR}/restarted
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status=0
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progress_message3 "$PRODUCT Counters Reset"
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else
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shift
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status=0
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for chain in $@; do
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if chain_exists $chain; then
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if qt $IPTABLES -Z $chain; then
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progress_message3 "Filter $chain Counters Reset"
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else
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error_message "ERROR: Reset of chain $chain failed"
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status=2
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break
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fi
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else
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error_message "WARNING: Filter Chain $chain does not exist"
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fi
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done
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fi
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;;
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restart)
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[ $# -ne 1 ] && usage 2
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if shorewall_is_started; then
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progress_message3 "Restarting $PRODUCT...."
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else
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error_message "$PRODUCT is not running"
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progress_message3 "Starting $PRODUCT...."
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fi
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define_firewall
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status=$?
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if [ -n "$SUBSYSLOCK" ]; then
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[ $status -eq 0 ] && touch $SUBSYSLOCK || rm -f $SUBSYSLOCK
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fi
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progress_message3 "done."
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;;
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refresh)
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[ $# -ne 1 ] && usage 2
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if shorewall_is_started; then
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progress_message3 "Refreshing $PRODUCT...."
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define_firewall
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status=$?
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progress_message3 "done."
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else
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echo "$PRODUCT is not running" >&2
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status=2
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fi
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;;
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restore)
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[ $# -ne 1 ] && usage 2
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define_firewall
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status=$?
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if [ -n "$SUBSYSLOCK" ]; then
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[ $status -eq 0 ] && touch $SUBSYSLOCK || rm -f $SUBSYSLOCK
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fi
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;;
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clear)
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[ $# -ne 1 ] && usage 2
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progress_message3 "Clearing $PRODUCT...."
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clear_firewall
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status=0
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[ -n "$SUBSYSLOCK" ] && rm -f $SUBSYSLOCK
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progress_message3 "done."
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;;
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status)
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[ $# -ne 1 ] && usage 2
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echo "$PRODUCT-$VERSION Status at $HOSTNAME - $(date)"
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echo
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if shorewall_is_started; then
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echo "$PRODUCT is running"
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status=0
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else
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echo "$PRODUCT is stopped"
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status=4
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fi
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if [ -f ${VARDIR}/state ]; then
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state="$(cat ${VARDIR}/state)"
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case $state in
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Stopped*|Clear*)
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status=3
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;;
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esac
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else
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state=Unknown
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fi
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echo "State:$state"
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echo
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;;
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version)
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[ $# -ne 1 ] && usage 2
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echo $VERSION
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status=0
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;;
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help)
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[ $# -ne 1 ] && usage 2
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usage 0
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;;
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*)
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usage 2
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;;
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esac
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exit $status
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