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shorewall_code/Shorewall/lib.cli-std
Tom Eastep 07160c5ed1
Add 'blacklist!' command. 
Signed-off-by: Tom Eastep <teastep@shorewall.net>
2020-06-06 10:13:46 -07:00

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#
# Shorewall 5.2 -- /usr/share/shorewall/lib.cli-std
#
# (c) 1999-2018 - Tom Eastep (teastep@shorewall.net)
#
# Complete documentation is available at https://shorewall.org
#
# This program is part of Shorewall.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by the
# Free Software Foundation, either version 2 of the license or, at your
# option, any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, see <http://www.gnu.org/licenses/>.
#
# This library contains the command processing code common to /sbin/shorewall and /sbin/shorewall6.
#
####################################################################################################
# Set the configuration variables from the .conf file
#
# $1 = Yes: read the params file
# $2 = Yes: check for STARTUP_ENABLED
# $3 = Yes: Check for LOGFILE
#
get_config() {
local prog
local lib
ensure_config_path
if [ "$1" = Yes ]; then
if [ "$(id -u)" -eq 0 ]; then
params=$(find_file params)
else
params="$g_shorewalldir/params"
fi
if [ -f $params ]; then
. $params
fi
fi
if [ -n "$g_shorewalldir" ]; then
config="$g_shorewalldir/$PRODUCT.conf"
else
config=$(find_file ${PRODUCT}.conf)
fi
if [ -f $config ]; then
if [ -r $config ]; then
. $config
else
fatal_error "Cannot read $config! (Hint: Are you root?)"
fi
else
fatal_error "$config does not exist!"
fi
ensure_config_path
if [ -z "$g_export" -a "$(id -u)" = 0 ]; then
#
# This block is avoided for compile for export and when the user isn't root
#
if [ "$3" = Yes ]; then
setup_logread
fi
if [ $g_family -eq 4 ]; then
if [ -n "$IPTABLES" ]; then
if [ ! -x "$IPTABLES" ]; then
fatal_error "The program specified in IPTABLES does not exist or is not executable"
fi
else
IPTABLES=$(mywhich iptables 2> /dev/null)
if [ -z "$IPTABLES" ] ; then
fatal_error "Can't find iptables executable"
fi
fi
g_tool=$IPTABLES
else
if [ -n "$IP6TABLES" ]; then
if [ ! -x "$IP6TABLES" ]; then
fatal_error "The program specified in IP6TABLES does not exist or is not executable"
fi
else
IP6TABLES=$(mywhich ip6tables 2> /dev/null)
if [ -z "$IP6TABLES" ] ; then
fatal_error "Can't find ip6tables executable"
fi
fi
g_tool=$IP6TABLES
fi
if [ -n "$IPSET" ]; then
case "$IPSET" in
*/*)
if [ ! -x "$IPSET" ] ; then
fatal_error "The program specified in IPSET ($IPSET) does not exist or is not executable"
fi
;;
ipset)
#
# Old config files had this as default
#
IPSET=''
;;
*)
prog="$(mywhich $IPSET 2> /dev/null)"
if [ -z "$prog" ] ; then
fatal_error "Can't find $IPSET executable"
fi
IPSET=$prog
;;
esac
else
IPSET=''
fi
if [ -n "$TC" ]; then
case "$TC" in
*/*)
if [ ! -x "$TC" ] ; then
fatal_error "The program specified in TC ($TC) does not exist or is not executable"
fi
;;
*)
prog="$(mywhich $TC 2> /dev/null)"
if [ -z "$prog" ] ; then
fatal_error "Can't find $TC executable"
fi
TC=$prog
;;
esac
else
TC='tc'
fi
#
# Compile by non-root needs no restore file
#
[ -n "$RESTOREFILE" ] || RESTOREFILE=restore
validate_restorefile RESTOREFILE
if [ "$2" = Yes ]; then
case $STARTUP_ENABLED in
No|no|NO)
not_configured_error "$g_product startup is disabled. To enable startup, set STARTUP_ENABLED=Yes in ${g_confdir}/${PRODUCT}.conf"
;;
Yes|yes|YES)
;;
*)
if [ -n "$STARTUP_ENABLED" ]; then
not_configured_error "Invalid Value for STARTUP_ENABLED: $STARTUP_ENABLED"
fi
;;
esac
fi
case ${SHOREWALL_COMPILER:=perl} in
perl|Perl)
;;
shell|Shell)
echo " WARNING: SHOREWALL_COMPILER=shell ignored. Shorewall-shell support has been removed in this release" >&2
;;
*)
fatal_error "Invalid value ($SHOREWALL_COMPILER) for SHOREWALL_COMPILER"
;;
esac
case ${TC_ENABLED:=Internal} in
No|NO|no)
TC_ENABLED=
;;
esac
[ -z "$LOGFORMAT" ] && LOGFORMAT='Shorewall:%s.%s'
[ -n "$LOGFORMAT" ] && LOGFORMAT="${LOGFORMAT%%%*}"
if [ -n "$STARTUP_LOG" ]; then
if [ -n "$LOG_VERBOSITY" ]; then
case $LOG_VERBOSITY in
-1)
;;
0|1|2)
;;
*)
fatal_error "Invalid LOG_VERBOSITY ($LOG_VERBOSITY)"
;;
esac
else
LOG_VERBOSITY=2;
fi
else
LOG_VERBOSITY=-1;
fi
else
STARTUP_LOG=
LOG_VERBOSITY=-1
fi
if [ -z "${g_export}${g_test}" ]; then
if [ -n "$SHOREWALL_SHELL" ]; then
if [ ! -x "$SHOREWALL_SHELL" ]; then
echo " WARNING: The program specified in SHOREWALL_SHELL does not exist or is not executable; falling back to /bin/sh" >&2
SHOREWALL_SHELL=/bin/sh
fi
fi
if [ -n "$IP" ]; then
case "$IP" in
*/*)
if [ ! -x "$IP" ] ; then
fatal_error "The program specified in IP ($IP) does not exist or is not executable"
fi
;;
*)
prog="$(mywhich $IP 2> /dev/null)"
if [ -z "$prog" ] ; then
fatal_error "Can't find $IP executable"
fi
IP=$prog
;;
esac
else
IP='ip'
fi
else
[ -n "$SHOREWALL_SHELL" ] || SHOREWALL_SHELL=/bin/sh
[ -n "$IP" ] || IP='ip'
fi
case $VERBOSITY in
-1|0|1|2)
;;
*)
if [ -n "$VERBOSITY" ]; then
fatal_error "Invalid VERBOSITY setting ($VERBOSITY)"
else
VERBOSITY=2
fi
;;
esac
[ -n "$g_use_verbosity" ] && VERBOSITY=$g_use_verbosity || VERBOSITY=$(($g_verbose_offset + $VERBOSITY))
if [ $VERBOSITY -lt -1 ]; then
VERBOSITY=-1
elif [ $VERBOSITY -gt 2 ]; then
VERBOSITY=2
fi
g_hostname=$(hostname 2> /dev/null)
[ -n "$RSH_COMMAND" ] || RSH_COMMAND='ssh ${root}@${system} ${command}'
[ -n "$RCP_COMMAND" ] || RCP_COMMAND='scp ${files} ${root}@${system}:${destination}'
case $MANGLE_ENABLED in
Yes|yes)
;;
No|no)
MANGLE_ENABLED=
;;
*)
if [ -n "$MANGLE_ENABLED" ]; then
fatal_error "Invalid MANGLE_ENABLED setting ($MANGLE_ENABLED)"
fi
;;
esac
case $AUTOMAKE in
Yes|yes)
AUTOMAKE=1
;;
No|no)
AUTOMAKE=
;;
[1-9])
;;
[1-9][0-9])
;;
[Rr]ecursive)
AUTOMAKE=recursive
;;
*)
if [ -n "$AUTOMAKE" ]; then
fatal_error "Invalid AUTOMAKE setting ($AUTOMAKE)"
fi
;;
esac
if [ -n "$WORKAROUNDS" ]; then
case $WORKAROUNDS in
[Yy]es)
;;
[Nn]o)
WORKAROUNDS=''
;;
*)
fatal_error "Invalid setting ($WORKAROUNDS) for WORKAROUNDS"
;;
esac
fi
g_loopback=$(find_loopback_interfaces)
[ -n "$PAGER" ] || PAGER=$DEFAULT_PAGER
if [ -z "$g_nopager" ]; then
if [ -n "$PAGER" -a -t 1 ]; then
case $PAGER in
/*)
g_pager="$PAGER"
[ -f "$g_pager" ] || fatal_error "PAGER $PAGER does not exist"
;;
*)
g_pager=$(mywhich $PAGER 2> /dev/null)
[ -n "$g_pager" ] || fatal_error "PAGER $PAGER not found"
;;
esac
[ -x "$g_pager" ] || fatal_error "PAGER $g_pager is not executable"
g_pager="| $g_pager"
fi
fi
if [ -n "$DYNAMIC_BLACKLIST" -a "$(id -u)" = 0 ]; then
case $COMMAND in
blacklist*|allow|drop|logdrop|reject)
setup_dbl
;;
esac
fi
if [ -z "$PERL_HASH_SEED" ]; then
PERL_HASH_SEED=0
else
case $PERL_HASH_SEED in
[0-9]|[1-9][0-9]|[1-9][0-9][0-9]|[1-9][0-9][0-9][0-9]|[1-9][0-9][0-9][0-9][0-9]|random)
;;
*)
fatal_error "Invalid setting ($PERL_HASH_SEED) for PERL_HASH_SEED"
;;
esac
fi
lib=$(find_file lib.cli-user)
[ -f $lib ] && . $lib
}
#
# Ensure that the effective UID is 0 or that we are dealing with a private configuration
#
ensure_root() {
if [ $(id -u) -ne 0 ]; then
if [ -z "$g_shorewalldir" -o "$g_shorewalldir" = $CONFDIR/$PRODUCT ]; then
startup_error "Ordinary users may not $COMMAND the default $PRODUCT configuration"
fi
fi
}
#
# Determine if there are config files newer than the passed object
#
uptodate() {
[ -x $1 ] || return 1
local dir
local busybox
local find
find=$(mywhich find)
[ -n "${find}" ] || return 1
[ -h "${find}" ] && busybox=Yes
find="${find} -L"
for dir in $g_shorewalldir $(split $CONFIG_PATH); do
if [ -n "${busybox}" ]; then
#
# Busybox 'find' doesn't support -quit.
#
if [ $AUTOMAKE = recursive ]; then
if [ -n "$(${find} ${dir} -newer $1 -print)" ]; then
return 1;
fi
elif [ -n "$(${find} ${dir} -maxdepth $AUTOMAKE -type f -newer $1 -print)" ]; then
return 1;
fi
elif [ "$AUTOMAKE" = recursive ]; then
if [ -n "$(${find} ${dir} -newer $1 -print -quit)" ]; then
return 1;
fi
elif [ -z "$AUTOMAKE" ]; then
if [ -n "$(${find} ${dir} -maxdepth 1 -type f -newer $1 -print -quit)" ]; then
return 1;
fi
elif [ -n "$(${find} ${dir} -maxdepth $AUTOMAKE -type f -newer $1 -print -quit)" ]; then
return 1;
fi
done
return 0
}
#
# Run the postcompile user exit
#
run_postcompile() { # $1 is the compiled script
local script
script=$(find_file postcompile)
if [ -f $script ]; then
. $script $1
else
return 0
fi
}
#
# Run the compiler
#
compiler() {
local pc
local shorewallrc
local shorewallrc1
local options
pc=${LIBEXECDIR}/shorewall/compiler.pl
ensure_root
#
# Let params and the compiler know the base configuration directory
#
if [ -n "$g_shorewalldir" ]; then
SW_CONFDIR="$g_shorewalldir"
else
SW_CONFDIR="$g_confdir"
fi
export SW_CONFDIR
#
# We've now set g_shorewalldir so recalculate CONFIG_PATH
#
[ -n "$g_haveconfig" ] || ensure_config_path
#
# Get the config from $g_shorewalldir
#
get_config Yes
case $COMMAND in
*start|try|reload|restart|safe-*)
;;
*)
STARTUP_LOG=
LOG_VERBOSITY=-1
;;
esac
debugflags="-w"
[ -n "$g_debug" ] && debugflags='-wd'
[ -n "$g_profile" ] && debugflags='-wd:NYTProf'
# Perl compiler only takes the output file as a argument
[ "$1" = debug -o "$1" = trace ] && shift;
[ "$1" = nolock ] && shift;
shift
shorewallrc=${g_basedir}/shorewallrc
if [ -n "$g_export" ]; then
shorewallrc1=$(find_file shorewallrc)
[ -f "$shorewallrc1" ] || fatal_error "Compiling for export requires a shorewallrc file"
fi
if [ -n "$g_conditional" ] && uptodate "$g_file"; then
echo "$g_file is up to date -- no compilation required"
g_compiled="$g_file"
return 0
fi
options="--verbose=$VERBOSITY --family=$g_family --config_path=$CONFIG_PATH --shorewallrc=${shorewallrc}"
[ -n "$shorewallrc1" ] && options="$options --shorewallrc1=${shorewallrc1}"
[ -n "$STARTUP_LOG" ] && options="$options --log=$STARTUP_LOG"
[ -n "$LOG_VERBOSITY" ] && options="$options --log_verbosity=$LOG_VERBOSITY";
[ -n "$g_export" ] && options="$options --export"
[ -n "$g_shorewalldir" ] && options="$options --directory=$g_shorewalldir"
[ -n "$g_timestamp" ] && options="$options --timestamp"
[ -n "$g_test" ] && options="$options --test"
[ -n "$g_preview" ] && options="$options --preview"
[ -n "$g_trace" ] && options="$options --debug"
[ -n "$g_confess" ] && options="$options --confess"
[ -n "$g_update" ] && options="$options --update"
[ -n "$g_annotate" ] && options="$options --annotate"
if [ -n "$PERL" ]; then
if [ ! -x "$PERL" ]; then
echo " WARNING: The program specified in the PERL option does not exist or is not executable; falling back to /usr/bin/perl" >&2
PERL=/usr/bin/perl
fi
else
PERL=/usr/bin/perl
fi
case "$g_doing" in
Compiling|Checking)
progress_message3 "$g_doing using Shorewall $SHOREWALL_VERSION..."
;;
Updating)
progress_message3 "Updating $g_product configuration to $SHOREWALL_VERSION..."
;;
*)
[ -n "$g_doing" ] && progress_message3 "$g_doing using Shorewall $SHOREWALL_VERSION..."
;;
esac
#
# Only use the pager if 'trace' or -r was specified and -d was not
#
[ -z "$g_trace" -a -z "$g_preview" ] || [ -n "$g_debug" ] && g_pager=
case $PERL_HASH_SEED in
random)
unset PERL_HASH_SEED
unset PERL_PERTURB_KEYS
;;
*)
export PERL_HASH_SEED
PERL_PERTURB_KEYS=0
export PERL_PERTURB_KEYS
;;
esac
if [ ${PERLLIBDIR} = ${LIBEXECDIR}/shorewall ]; then
eval $PERL $debugflags $pc $options $@ $g_pager
else
eval PERL5LIB=${PERLLIBDIR} $PERL $debugflags $pc $options $@ $g_pager
fi
status=$?
if [ $status -eq 0 -a $COMMAND != check -a $COMMAND != update ]; then
g_compiled="$g_file"
run_postcompile "$g_compiled"
return
fi
return $status
}
#
# Start Command Executor
#
start_command() {
local finished
finished=0
local rc
rc=0
if product_is_started; then
error_message "Shorewall is already running"
exit 0
fi
[ -n "$STARTUP_ENABLED" ] || not_configured_error "Startup is disabled"
while [ $finished -eq 0 -a $# -gt 0 ]; do
option=$1
case $option in
-*)
option=${option#-}
while [ -n "$option" ]; do
case $option in
-)
finished=1
option=
;;
d*)
g_debug=Yes
option=${option#d}
;;
f*)
g_fast=Yes
option=${option#f}
;;
p*)
[ -n "$(which conntrack)" ] || fatal_error "The '-p' option requires the conntrack utility which does not appear to be installed on this system"
g_purge=Yes
option=${option%p}
;;
c*)
AUTOMAKE=
option=${option#c}
;;
T*)
g_confess=Yes
option=${option#T}
;;
C*)
g_counters=Yes
option=${option#C}
;;
D*)
g_trace=Yes
option=${option#D}
;;
*)
option_error $option
;;
esac
done
shift
;;
*)
finished=1
;;
esac
done
case $# in
0)
;;
1)
[ -n "$g_shorewalldir" ] && fatal_error "A directory has already been specified: $1"
[ -n "$g_fast" ] && fatal_error "Directory may not be specified with the -f option"
if [ ! -d $1 ]; then
if [ -e $1 ]; then
fatal_error "$1 is not a directory"
else
fatal_error "Directory $1 does not exist"
fi
fi
g_shorewalldir=$(resolve_file $1)
AUTOMAKE=
;;
*)
too_many_arguments $2
;;
esac
if [ -n "${g_fast}${AUTOMAKE}" ]; then
if ! uptodate $g_firewall; then
g_fast=
AUTOMAKE=
fi
fi
if [ -n "$AUTOMAKE" ]; then
[ -n "$g_nolock" ] || mutex_on
run_it $g_firewall start
rc=$?
[ -n "$g_nolock" ] || mutex_off
else
g_file="${VARDIR}/.start"
if compiler compile "$g_file"; then
[ -n "$g_nolock" ] || mutex_on
run_it ${VARDIR}/.start start
rc=$?
[ -n "$g_nolock" ] || mutex_off
else
rc=$?
mylogger kern.err "ERROR:$g_product start failed"
fi
fi
exit $rc
}
#
# Compile Command Executor
#
compile_command() {
local finished
finished=0
while [ $finished -eq 0 ]; do
[ $# -eq 0 ] && break
option=$1
case $option in
-*)
shift
option=${option#-}
while [ -n "$option" ]; do
case $option in
e*)
g_export=Yes
g_shorewalldir='.'
option=${option#e}
;;
p*)
g_profile=Yes
option=${option#p}
;;
t*)
g_test=Yes
option=${option#t}
;;
d*)
g_debug=Yes;
option=${option#d}
;;
c*)
g_conditional=Yes;
option=${option#c}
;;
T*)
g_confess=Yes
option=${option#T}
;;
D*)
g_trace=Yes
option=${option#D}
;;
-)
finished=1
option=
;;
*)
option_error $option
;;
esac
done
;;
*)
finished=1
;;
esac
done
g_file=
case $# in
0)
[ -n "$g_export" ] && g_file=firewall || g_file=$g_firewall
;;
1)
g_file=$1
[ -d "$g_file" ] && fatal_error "$g_file is a directory"
;;
2)
[ -n "$g_shorewalldir" -a -z "$g_export" ] && fatal_error "A directory has already been specified: $1"
if [ ! -d $1 ]; then
if [ -e $1 ]; then
fatal_error "$1 is not a directory"
else
fatal_error "Directory $1 does not exist"
fi
fi
g_shorewalldir=$(resolve_file $1)
g_file=$2
;;
*)
too_many_arguments $3
;;
esac
[ "x$g_file" = x- ] && g_doing=''
compiler compile "$g_file"
}
#
# Check Command Executor
#
check_command() {
local finished
finished=0
while [ $finished -eq 0 -a $# -gt 0 ]; do
option=$1
case $option in
-*)
option=${option#-}
while [ -n "$option" ]; do
case $option in
-)
finished=1
option=
;;
e*)
g_export=Yes
g_shorewalldir='.'
option=${option#e}
;;
p*)
g_profile=Yes
option=${option#p}
;;
t*)
g_test=Yes
option=${option#t}
;;
d*)
g_debug=Yes;
option=${option#d}
;;
r*)
g_preview=Yes
option=${option#r}
;;
T*)
g_confess=Yes
option=${option#T}
;;
D*)
g_trace=Yes
option=${option#D}
;;
*)
option_error $option
;;
esac
done
shift
;;
*)
finished=1
;;
esac
done
case $# in
0)
;;
1)
[ -n "$g_shorewalldir" -a -z "$g_export" ] && fatal_error "A directory has already been specified: $1"
if [ ! -d $1 ]; then
if [ -e $1 ]; then
fatal_error "$1 is not a directory"
else
fatal_error "Directory $1 does not exist"
fi
fi
g_shorewalldir=$(resolve_file $1)
;;
*)
too_many_arguments $2
;;
esac
g_doing="Checking"
compiler check
}
#
# Update Command Executor
#
update_command() {
local finished
finished=0
g_update=Yes
while [ $finished -eq 0 -a $# -gt 0 ]; do
option=$1
case $option in
-*)
option=${option#-}
while [ -n "$option" ]; do
case $option in
-)
finished=1
option=
;;
e*)
g_export=Yes
option=${option#e}
;;
p*)
g_profile=Yes
option=${option#p}
;;
t*)
g_test=Yes
option=${option#t}
;;
d*)
g_debug=Yes;
option=${option#d}
;;
r*)
g_preview=Yes
option=${option#r}
;;
T*)
g_confess=Yes
option=${option#T}
;;
a*)
g_annotate=Yes
option=${option#a}
;;
A*)
option=${option#A}
;;
D*)
g_trace=Yes
option=${option#D}
;;
*)
option_error $option
;;
esac
done
shift
;;
*)
finished=1
;;
esac
done
case $# in
0)
;;
1)
[ -n "$g_shorewalldir" ] && fatal_error "A directory has already been specified: $1"
if [ ! -d $1 ]; then
if [ -e $1 ]; then
fatal_error "$1 is not a directory"
else
fatal_error "Directory $1 does not exist"
fi
fi
g_shorewalldir=$(resolve_file $1)
;;
*)
too_many_arguments $2
;;
esac
g_doing="Updating"
compiler check
}
#
# Reload/Restart Command Executor
#
restart_command() {
local finished
finished=0
local rc
rc=0
local restorefile
while [ $finished -eq 0 -a $# -gt 0 ]; do
option=$1
case $option in
-*)
option=${option#-}
while [ -n "$option" ]; do
case $option in
-)
finished=1
option=
;;
d*)
g_debug=Yes
option=${option#d}
;;
f*)
g_fast=Yes
option=${option#f}
;;
c*)
AUTOMAKE=
option=${option#c}
;;
n*)
g_noroutes=Yes
option=${option#n}
;;
p*)
[ -n "$(which conntrack)" ] || fatal_error "The '-p' option requires the conntrack utility which does not appear to be installed on this system"
g_purge=Yes
option=${option%p}
;;
T*)
g_confess=Yes
option=${option#T}
;;
i*)
option=${option#i}
;;
C*)
g_counters=Yes
option=${option#C}
;;
D*)
g_trace=Yes
option=${option#D}
;;
*)
option_error $option
;;
esac
done
shift
;;
*)
finished=1
;;
esac
done
case $# in
0)
;;
1)
[ -n "$g_shorewalldir" ] && fatal_error "A directory has already been specified: $1"
if [ ! -d $1 ]; then
if [ -e $1 ]; then
fatal_error "$1 is not a directory"
else
fatal_error "Directory $1 does not exist"
fi
fi
g_shorewalldir=$(resolve_file $1)
[ -n "$g_fast" ] && fatal_error "Directory may not be specified with the -f option"
AUTOMAKE=
;;
*)
too_many_arguments $2
;;
esac
[ -n "$STARTUP_ENABLED" ] || not_configured_error "Startup is disabled"
if [ -z "$g_fast" -a -n "$AUTOMAKE" ]; then
uptodate $g_firewall && g_fast=Yes
fi
g_file="${VARDIR}/.${COMMAND}"
if [ -z "$g_fast" ]; then
if compiler compile "$g_file"; then
[ -n "$g_nolock" ] || mutex_on
run_it ${VARDIR}/.${COMMAND} ${COMMAND}
rc=$?
[ -n "$g_nolock" ] || mutex_off
else
rc=$?
mylogger kern.err "ERROR:$g_product ${COMMAND} failed"
fi
else
[ -x $g_firewall ] || fatal_error "No $g_firewall file found"
[ -n "$g_nolock" ] || mutex_on
run_it $g_firewall $COMMAND
rc=$?
[ -n "$g_nolock" ] || mutex_off
fi
return $rc
}
read_yesno_with_timeout() {
local timeout
timeout=${1:-60}
case $timeout in
*s)
;;
*m)
timeout=$((${timeout%m} * 60))
;;
*h)
timeout=$((${timeout%h} * 3600))
;;
esac
read -t $timeout yn 2> /dev/null
if [ $? -eq 2 ]
then
# read doesn't support timeout
test -x /bin/bash || return 2 # bash is not installed so the feature is not available
/bin/bash -c "read -t $timeout yn ; if [ \"\$yn\" == \"y\" ] ; then exit 0 ; else exit 1 ; fi" # invoke bash and use its version of read
return $?
else
# read supports timeout
case "$yn" in
y|Y)
return 0
;;
*)
return 1
;;
esac
fi
}
#
# Safe-start/safe-reload/safe-restart Command Executor
#
safe_commands() {
local finished
finished=0
local command
local timeout
timeout=60
# test is the shell supports timed read
read -t 0 junk 2> /dev/null
if [ $? -eq 2 -a ! -x /bin/bash ];then
echo "Your shell does not support a feature required to execute this command".
exit 2
fi
while [ $finished -eq 0 -a $# -gt 0 ]; do
option=$1
case $option in
-*)
option=${option#-}
while [ -n "$option" ]; do
case $option in
-)
finished=1
option=
;;
n*)
g_noroutes=Yes
option=${option#n}
;;
t)
[ $# -eq 1 ] && fatal_error "The -t option requires a timeout value"
echo $2 | egrep -q '[[:digit:]]+[smh]' || fatal_error "The timeout value must be numeric, optionally followed by a suffix (s, m or h)"
timeout=$2
option=
shift;
;;
*)
option_error $option
;;
esac
done
shift
;;
*)
finished=1
;;
esac
done
case $# in
0)
;;
1)
[ -n "$g_shorewalldir" ] && fatal_error "A directory has already been specified: $1"
if [ ! -d $1 ]; then
if [ -e $1 ]; then
fatal_error "$1 is not a directory"
else
fatal_error "Directory $1 does not exist"
fi
fi
g_shorewalldir=$(resolve_file $1)
;;
*)
too_many_arguments $2
;;
esac
[ -n "$STARTUP_ENABLED" ] || not_configured_error "Startup is disabled"
if product_is_started; then
running=Yes
else
running=
fi
if [ "$COMMAND" = "safe-start" -a -n "$running" ]; then
# the command is safe-start but the firewall is already running
error_message "Shorewall is already started"
exit 0
fi
if [ "$COMMAND" = "safe-start" -o -z "$running" ]; then
# the command is safe-start or shorewall[6] is not started yet
command="start"
else
# the command is safe-reload or safe-restart and the firewall is already running
command="${COMMAND#safe-}"
fi
g_file="${VARDIR}/.$command"
if ! compiler compile "$g_file"; then
status=$?
exit $status
fi
case $command in
start)
RESTOREFILE=NONE
progress_message3 "Starting..."
;;
reload)
RESTOREFILE=.safe
g_restorepath=${VARDIR}/.safe
save_config
progress_message3 "Reloading..."
;;
restart)
RESTOREFILE=.safe
g_restorepath=${VARDIR}/.safe
save_config
progress_message3 "Restarting..."
;;
esac
[ -n "$g_nolock" ] || mutex_on
if run_it ${VARDIR}/.$command $command; then
printf "Do you want to accept the new firewall configuration? [y/n] "
if read_yesno_with_timeout $timeout ; then
echo "New configuration has been accepted"
else
if [ "$command" = "restart" -o "$command" = "reload" ]; then
run_it ${VARDIR}/.safe -r restore
else
run_it ${VARDIR}/.$command clear
fi
[ -n "$g_nolock" ] || mutex_off
echo "New configuration has been rejected and the old one restored"
exit 2
fi
fi
[ -n "$g_nolock" ] || mutex_off
}
#
# 'try' Command Executor
#
try_command() {
local finished
finished=0
local timeout
timeout=
handle_directory() {
[ -n "$g_shorewalldir" ] && fatal_error "A directory has already been specified: $1"
if [ ! -d $1 ]; then
if [ -e $1 ]; then
fatal_error "$1 is not a directory"
else
fatal_error "Directory $1 does not exist"
fi
fi
g_shorewalldir=$(resolve_file $1)
}
while [ $finished -eq 0 -a $# -gt 0 ]; do
option=$1
case $option in
-*)
option=${option#-}
while [ -n "$option" ]; do
case $option in
-)
finished=1
option=
;;
n*)
g_noroutes=Yes
option=${option#n}
;;
*)
option_error $option
;;
esac
done
shift
;;
*)
finished=1
;;
esac
done
case $# in
0)
missing_argument
;;
1)
handle_directory $1
;;
2)
handle_directory $1
echo $2 | egrep -q '[[:digit:]]+[smh]' || fatal_error "The timeout value must be numeric, optionally followed by a suffix (s, m or h)"
timeout=$2
;;
*)
too_many_arguments $3
;;
esac
[ -n "$STARTUP_ENABLED" ] || not_configured_error "Startup is disabled"
if product_is_started; then
running=Yes
else
running=
fi
if [ -z "$running" ]; then
# shorewall[6] is not started yet
command="start"
else
# the firewall is already running
command="reload"
fi
g_file="${VARDIR}/.$command"
if ! compiler compile "$g_file"; then
status=$?
exit $status
fi
run_postcompile ${VARDIR}/.restart
case $command in
start)
RESTOREFILE=NONE
progress_message3 "Starting..."
;;
reload)
RESTOREFILE=.try
g_restorepath=${VARDIR}/.try
save_config
progress_message3 "Reloading..."
;;
esac
[ -n "$g_nolock" ] || mutex_on
if run_it ${VARDIR}/.$command $command && [ -n "$timeout" ]; then
sleep $timeout
if [ "$command" = "reload" ]; then
run_it ${VARDIR}/.try restore
else
run_it ${VARDIR}/.$command clear
fi
fi
[ -n "$g_nolock" ] || mutex_off
return 0
}
rsh_command() {
command="$*"
eval $RSH_COMMAND
}
rcp_command() {
files="$1"
destination=$2
eval $RCP_COMMAND
}
#
# Remote-{getcaps|getrc} command executer
#
remote_capture() # $* = original arguments less the command.
{
local verbose
verbose=$(make_verbose)
local finished
finished=0
local system
local getrc
getrc=
local getcaps
getcaps=
local remote_sw_dir_path
remote_sw_dir_path=
local root
root=root
local libexec
libexec=${LIBEXECDIR}
while [ $finished -eq 0 -a $# -gt 0 ]; do
option=$1
case $option in
-*)
option=${option#-}
while [ -n "$option" ]; do
case $option in
-)
finished=1
option=
;;
R*)
getrc=Yes
option=${option#R}
;;
c*)
getcaps=Yes
option=${option#c}
;;
r)
[ $# -gt 1 ] || fatal_error "Missing Root User name"
root=$2
option=
shift
;;
D)
[ $# -gt 1 ] || fatal_error "Missing directory name"
g_shorewalldir=$2
option=
shift
;;
p)
[ $# -gt 1 ] || fatal_error "Missing directory name"
remote_sw_dir_path=$2
option=
shift
;;
T*)
g_confess=Yes
option=${option#T}
;;
*)
option_error $option
;;
esac
done
shift
;;
*)
finished=1
;;
esac
done
case $# in
0)
[ -n "$g_shorewalldir" ] || g_shorewalldir='.'
;;
1)
g_shorewalldir="."
system=$1
;;
2)
g_shorewalldir=$1
system=$2
;;
*)
too_many_arguments $3
;;
esac
g_export=Yes
ensure_config_path
get_config Yes
g_haveconfig=Yes
if [ -z "$system" ]; then
system=$FIREWALL
[ -n "$system" ] || fatal_error "No system name given and the FIREWALL option is not set"
fi
case $COMMAND in
remote-getrc)
getrc=Yes
;;
remote-getcaps)
getcaps=Yes
;;
esac
[ -n "$getcaps" ] && getrc=Yes
if [ -n "$getrc" -o ! -s $g_shorewalldir/shorewallrc ]; then
progress_message2 "Getting shorewallrc file on system $system..."
if [ -n "$remote_sw_dir_path" ]; then
if ! rsh_command "/sbin/shorewall-lite show rc $remote_sw_dir_path" > $g_shorewalldir/shorewallrc; then
fatal_error "Capturing RC file on system $system failed"
fi
elif ! rsh_command "/sbin/shorewall-lite show rc" > $g_shorewalldir/shorewallrc; then
fatal_error "Capturing RC file on system $system failed"
fi
fi
remote_sw_dir_path=
if [ -n "$getcaps" -o ! -s $g_shorewalldir/capabilities ]; then
if [ -f $g_shorewalldir/shorewallrc -a -s $g_shorewalldir/shorewallrc ]; then
. $g_shorewalldir/shorewallrc
libexec="$LIBEXECDIR"
[ -n "$DONT_LOAD" ] && DONT_LOAD="$(echo $DONT_LOAD | tr ',' ' ')"
progress_message2 "Getting Capabilities on system $system..."
if [ $g_family -eq 4 ]; then
if ! rsh_command "MODULESDIR=$MODULESDIR IPTABLES=$IPTABLES DONT_LOAD=\"$DONT_LOAD\" $libexec/shorewall-lite/shorecap" > $g_shorewalldir/capabilities; then
fatal_error "Capturing capabilities on system $system failed"
fi
elif ! rsh_command "MODULESDIR=$MODULESDIR IP6TABLES=$IP6TABLES DONT_LOAD=\"$DONT_LOAD\" $libexec/shorewall6-lite/shorecap" > $g_shorewalldir/capabilities; then
fatal_error "Capturing capabilities on system $system failed"
fi
else
fatal_error "$g_shorewalldir/shorewallrc is not present."
fi
fi
}
#
# Remote-{start|reload|restart} command executor
#
remote_commands() # $* = original arguments less the command.
{
local verbose
verbose=$(make_verbose)
local file
file=
local capabilities
capabilities=
local finished
finished=0
local saveit
saveit=
local result
local system
local getcaps
getcaps=
local root
root=root
local libexec
libexec=${LIBEXECDIR}
local confdir
confdir=${CONFDIR}
local sbindir
sbindir=${SBINDIR}
local sharedir
sharedir=${SHAREDIR}
local litedir
local exitstatus
local program
while [ $finished -eq 0 -a $# -gt 0 ]; do
option=$1
case $option in
-*)
option=${option#-}
while [ -n "$option" ]; do
case $option in
-)
finished=1
option=
;;
s*)
saveit=Yes
option=${option#s}
;;
c*)
getcaps=Yes
option=${option#c}
;;
r)
[ $# -gt 1 ] || fatal_error "Missing Root User name"
root=$2
option=
shift
;;
D)
[ $# -gt 1 ] || fatal_error "Missing directory name"
g_shorewalldir=$2
option=
shift
;;
T*)
g_confess=Yes
option=${option#T}
;;
D*)
g_trace=Yes
option=${option#D}
;;
*)
option_error $option
;;
esac
done
shift
;;
*)
finished=1
;;
esac
done
case $# in
0)
[ -n "$g_shorewalldir" ] || g_shorewalldir='.'
;;
1)
g_shorewalldir="."
system=$1
;;
2)
g_shorewalldir=$1
system=$2
;;
*)
too_many_arguments $3
;;
esac
if [ -f $g_shorewalldir/shorewallrc ]; then
. $g_shorewalldir/shorewallrc
sbindir="$SBINDIR"
confdir="$CONFDIR"
libexec="$LIBEXECDIR"
litedir="${VARDIR}-lite"
. $sharedir/shorewall/shorewallrc
else
error_message " WARNING: $g_shorewalldir/shorewallrc does not exist; using settings from $g_basedir/shorewalrc" >&2
sbindir="$SBINDIR"
confdir="$CONFDIR"
libexec="$LIBEXECDIR"
litedir="${VARDIR}-lite"
fi
g_export=Yes
ensure_config_path
get_config Yes
g_haveconfig=Yes
if [ -z "$system" ]; then
system=$FIREWALL
[ -n "$system" ] || fatal_error "No system name given and the FIREWALL option is not set"
fi
if [ -z "$getcaps" ]; then
capabilities=$(find_file capabilities)
[ ! -f $capabilities -o ! -s $capabilities ] && getcaps=Yes
fi
if [ -n "$getcaps" ]; then
[ -n "$DONT_LOAD" ] && DONT_LOAD="$(echo $DONT_LOAD | tr ',' ' ')"
progress_message2 "Getting Capabilities on system $system..."
if [ $g_family -eq 4 ]; then
if ! rsh_command "MODULESDIR=$MODULESDIR IPTABLES=$IPTABLES DONT_LOAD=\"$DONT_LOAD\" $libexec/shorewall-lite/shorecap" > $g_shorewalldir/capabilities; then
fatal_error "Capturing capabilities on system $system failed"
fi
elif ! rsh_command "MODULESDIR=$MODULESDIR IP6TABLES=$IP6TABLES DONT_LOAD=\"$DONT_LOAD\" $libexec/shorewall6-lite/shorecap" > $g_shorewalldir/capabilities; then
fatal_error "Capturing capabilities on system $system failed"
fi
fi
file=$(resolve_file $g_shorewalldir/firewall)
program=$sbindir/${PRODUCT}-lite
#
# Handle nonstandard remote VARDIR
#
progress_message3 "Getting VARDIR on system $system..."
temp=$(rsh_command $program show config 2> /dev/null | grep ^LITEDIR | sed 's/LITEDIR is //')
[ -n "$temp" ] && litedir="$temp"
g_file="$g_shorewalldir/firewall"
exitstatus=0
if compiler compiler "$g_file"; then
progress_message3 "Copying $file and ${file}.conf to ${system}:${litedir}..."
if rcp_command "$g_shorewalldir/firewall $g_shorewalldir/firewall.conf" ${litedir}; then
save=$(find_file save);
if [ -f $save ]; then
progress_message3 "Copying $save to ${system}:${confdir}/${PRODUCT}-lite/"
rcp_command $save ${confdir}/$PRODUCT/
exitstatus=$?
fi
if [ $exitstatus -eq 0 ]; then
progress_message3 "Copy complete"
if [ $COMMAND = remote-reload ]; then
if rsh_command "$program $verbose $timestamp reload"; then
progress_message3 "System $system reloaded"
else
exitstatus=$?
savit=
fi
elif [ $COMMAND = remote-restart ]; then
if rsh_command "$program $verbose $timestamp restart"; then
progress_message3 "System $system restarted"
else
exitstatus=$?
saveit=
fi
elif rsh_command "$program $verbose $timestamp start"; then
progress_message3 "System $system started"
else
exitstatus=$?
saveit=
fi
if [ -n "$saveit" ]; then
if rsh_command "$program $verbose $timestamp save"; then
progress_message3 "Configuration on system $system saved"
else
exitstatus=$?
fi
fi
fi
else
exitstatus=$?
fi
else
exitstatus=$?
fi
return $exitstatus
}
#
# Export command executor
#
export_command() # $* = original arguments less the command.
{
local verbose
verbose=$(make_verbose)
local file
file=
local finished
finished=0
local target
while [ $finished -eq 0 -a $# -gt 0 ]; do
option=$1
case $option in
-*)
option=${option#-}
while [ -n "$option" ]; do
case $option in
-)
finished=1
option=
;;
*)
fatal_error "Unrecognized option \"$option\""
;;
esac
done
shift
;;
*)
finished=1
;;
esac
done
case $# in
1)
g_shorewalldir="."
target=$1
;;
2)
g_shorewalldir=$1
target=$2
;;
*)
fatal_error "Invalid command syntax (\"man shorewall\" for help)"
;;
esac
case $target in
*:*)
;;
*)
target=$target:
;;
esac
file=$(resolve_file $g_shorewalldir/firewall)
g_export=Yes
g_file="$g_shorewalldir/firewall"
if compiler compile "$g_file" && \
echo "Copying $file and ${file}.conf to ${target#*@}..." && \
scp $g_shorewalldir/firewall $g_shorewalldir/firewall.conf $target
then
save=$(find_file save);
[ -f $save ] && progress_message3 "Copying $save to ${target#*}..." && rcp_command $save $target
progress_message3 "Copy complete"
fi
}
run_command() {
if [ -x $g_firewall ] ; then
uptodate $g_firewall || echo " WARNING: $g_firewall is not up to date" >&2
run_it $g_firewall $@
else
fatal_error "$g_firewall does not exist or is not executable"
fi
}
compiler_command() {
case $COMMAND in
compile|co)
shift
compile_command $@
;;
check|ck)
shift
check_command $@
;;
update)
shift
update_command $@
;;
remote-start|remote-reload|remote-restart)
shift
remote_commands $@
;;
export)
shift
export_command $@
;;
try)
only_root
get_config Yes
shift
try_command $@
;;
safe-reload|safe-restart|safe-start)
only_root
get_config Yes
shift
safe_commands $@
;;
remote-getrc|remote-getcaps)
shift
remote_capture $@
;;
*)
fatal_error "Invalid command: $COMMAND"
;;
esac
}
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