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967 lines
28 KiB
967 lines
28 KiB
#!/bin/sh
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# banIP - ban incoming and outgoing ip adresses/subnets via ipset
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# written by Dirk Brenken (dev@brenken.org)
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# This is free software, licensed under the GNU General Public License v3.
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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# (s)hellcheck exceptions
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# shellcheck disable=1091 disable=2039 disable=2143 disable=2181 disable=2188
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# set initial defaults
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#
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LC_ALL=C
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PATH="/usr/sbin:/usr/bin:/sbin:/bin"
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ban_ver="0.3.11"
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ban_basever=""
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ban_enabled=0
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ban_automatic="1"
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ban_sources=""
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ban_iface=""
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ban_debug=0
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ban_backupdir="/mnt"
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ban_maxqueue=4
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ban_autoblacklist=1
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ban_autowhitelist=1
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ban_realtime="false"
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ban_fetchutil=""
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ban_ipt="$(command -v iptables)"
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ban_ipt_save="$(command -v iptables-save)"
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ban_ipt_restore="$(command -v iptables-restore)"
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ban_ipt6="$(command -v ip6tables)"
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ban_ipt6_save="$(command -v ip6tables-save)"
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ban_ipt6_restore="$(command -v ip6tables-restore)"
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ban_ipset="$(command -v ipset)"
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ban_logger="$(command -v logger)"
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ban_chain="banIP"
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ban_action="${1:-"start"}"
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ban_pidfile="/var/run/banip.pid"
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ban_rtfile="/tmp/ban_runtime.json"
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ban_logservice="/etc/banip/banip.service"
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ban_sshdaemon=""
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ban_setcnt=0
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ban_cnt=0
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# load environment
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#
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f_envload()
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{
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# get system information
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#
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ban_sysver="$(ubus -S call system board 2>/dev/null | jsonfilter -e '@.model' -e '@.release.description' | \
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awk 'BEGIN{ORS=", "}{print $0}' | awk '{print substr($0,1,length($0)-2)}')"
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# parse 'global' and 'extra' section by callback
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#
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config_cb()
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{
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local type="${1}"
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if [ "${type}" = "banip" ]
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then
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option_cb()
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{
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local option="${1}"
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local value="${2}"
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eval "${option}=\"${value}\""
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}
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else
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reset_cb
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fi
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}
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# parse 'source' typed sections
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#
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parse_config()
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{
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local value opt section="${1}" options="ban_src ban_src_6 ban_src_rset ban_src_rset_6 ban_src_settype ban_src_ruletype ban_src_on ban_src_on_6 ban_src_cat"
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for opt in ${options}
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do
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config_get value "${section}" "${opt}"
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if [ -n "${value}" ]
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then
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eval "${opt}_${section}=\"${value}\""
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if [ "${opt}" = "ban_src" ]
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then
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eval "ban_sources=\"${ban_sources} ${section}\""
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elif [ "${opt}" = "ban_src_6" ]
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then
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eval "ban_sources=\"${ban_sources} ${section}_6\""
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fi
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fi
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done
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}
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# load config
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#
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config_load banip
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config_foreach parse_config source
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# log daemon check
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#
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if [ "$(/etc/init.d/log running; printf "%u" "${?}")" -eq 1 ]
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then
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unset ban_logger
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f_log "info" "your log daemon 'logd' is not running, please enable 'logd' to use this service"
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f_rmtemp
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exit 1
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fi
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# version check
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#
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if [ -z "${ban_basever}" ] || [ "${ban_ver%.*}" != "${ban_basever}" ]
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then
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f_log "info" "your banIP config seems to be too old, please update your config with the '--force-maintainer' opkg option"
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f_rmtemp
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exit 0
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fi
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# create temp directory & files
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#
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f_temp
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# check status
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#
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if [ "${ban_enabled}" -eq 0 ]
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then
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f_bgserv "stop"
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f_jsnup disabled
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f_ipset destroy
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f_rmbackup
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f_rmtemp
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f_log "info" "banIP is currently disabled, please set ban_enabled to '1' to use this service"
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exit 0
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fi
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}
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# check environment
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#
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f_envcheck()
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{
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local util utils packages iface tmp cnt=0 cnt_max=0
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f_jsnup "running"
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f_log "info" "start banIP processing (${ban_action})"
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# check backup directory
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#
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if [ ! -d "${ban_backupdir}" ]
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then
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f_log "err" "the backup directory '${ban_backupdir}' does not exist or has not been mounted yet, please create the directory or raise the 'ban_triggerdelay' to defer the banIP start"
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fi
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# get wan devices and wan subnets
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#
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if [ "${ban_automatic}" = "1" ]
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then
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while [ "${cnt}" -le 30 ]
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do
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network_find_wan iface
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if [ -n "${iface}" ] && [ -z "$(printf "%s\\n" "${ban_iface}" | grep -F "${iface}")" ]
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then
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ban_iface="${ban_iface} ${iface}"
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if [ "${cnt_max}" -eq 0 ]
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then
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cnt_max=$((cnt+5))
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fi
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fi
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network_find_wan6 iface
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if [ -n "${iface}" ] && [ -z "$(printf "%s\\n" "${ban_iface}" | grep -F "${iface}")" ]
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then
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ban_iface="${ban_iface} ${iface}"
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if [ "${cnt_max}" -eq 0 ]
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then
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cnt_max=$((cnt+5))
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fi
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fi
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if [ -z "${ban_iface}" ] || [ "${cnt}" -le "${cnt_max}" ]
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then
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network_flush_cache
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cnt=$((cnt+1))
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sleep 1
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else
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break
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fi
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done
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fi
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for iface in ${ban_iface}
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do
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network_get_device tmp "${iface}"
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if [ -n "${tmp}" ] && [ -z "$(printf "%s\\n" "${ban_dev}" | grep -F "${tmp}")" ]
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then
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ban_dev="${ban_dev} ${tmp}"
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else
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network_get_physdev tmp "${iface}"
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if [ -n "${tmp}" ] && [ -z "$(printf "%s\\n" "${ban_dev}" | grep -F "${tmp}")" ]
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then
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ban_dev="${ban_dev} ${tmp}"
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fi
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fi
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network_get_subnets tmp "${iface}"
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if [ -n "${tmp}" ] && [ -z "$(printf "%s\\n" "${ban_subnets}" | grep -F "${tmp}")" ]
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then
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ban_subnets="${ban_subnets} ${tmp}"
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fi
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network_get_subnets6 tmp "${iface}"
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if [ -n "${tmp}" ] && [ -z "$(printf "%s\\n" "${ban_subnets6}" | grep -F "${tmp}")" ]
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then
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ban_subnets6="${ban_subnets6} ${tmp}"
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fi
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done
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ban_dev_all="$(ip link show 2>/dev/null | awk 'BEGIN{FS="[@: ]"}/^[0-9:]/{if($3!="lo"){print $3}}')"
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if [ -z "${ban_iface}" ] || [ -z "${ban_dev}" ] || [ -z "${ban_dev_all}" ]
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then
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f_log "err" "wan interface(s)/device(s) (${ban_iface:-"-"}/${ban_dev:-"-"}) not found, please please check your configuration"
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fi
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# check fetch utility
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#
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if [ -z "${ban_fetchutil}" ]
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then
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cnt_max=$((cnt+5))
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while [ -z "${packages}" ]
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do
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packages="$(opkg list-installed 2>/dev/null)"
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if [ "${cnt}" -gt "${cnt_max}" ]
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then
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break
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fi
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cnt=$((cnt+1))
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sleep 1
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done
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if [ -n "${packages}" ]
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then
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utils="aria2c curl wget uclient-fetch"
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for util in ${utils}
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do
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if { [ "${util}" = "uclient-fetch" ] && [ -n "$(printf "%s\\n" "${packages}" | grep "^libustream-")" ]; } || \
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{ [ "${util}" = "wget" ] && [ -n "$(printf "%s\\n" "${packages}" | grep "^wget -")" ]; } || \
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{ [ "${util}" != "uclient-fetch" ] && [ "${util}" != "wget" ]; }
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then
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ban_fetchutil="$(command -v "${util}")"
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if [ -x "${ban_fetchutil}" ]
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then
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break
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fi
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fi
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unset ban_fetchutil util
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done
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fi
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else
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util="${ban_fetchutil}"
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ban_fetchutil="$(command -v "${util}")"
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if [ ! -x "${ban_fetchutil}" ]
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then
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unset ban_fetchutil util
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fi
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fi
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case "${util}" in
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"aria2c")
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ban_fetchparm="${ban_fetchparm:-"--timeout=20 --allow-overwrite=true --auto-file-renaming=false --check-certificate=true --dir=" " -o"}"
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;;
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"curl")
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ban_fetchparm="${ban_fetchparm:-"--connect-timeout 20 -o"}"
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;;
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"uclient-fetch")
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ban_fetchparm="${ban_fetchparm:-"--timeout=20 -O"}"
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;;
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"wget")
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ban_fetchparm="${ban_fetchparm:-"--no-cache --no-cookies --max-redirect=0 --timeout=20 -O"}"
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;;
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esac
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if [ -z "${ban_fetchutil}" ] || [ -z "${ban_fetchparm}" ]
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then
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f_log "err" "download utility with SSL support not found, please install 'uclient-fetch' with a 'libustream-*' variant or another download utility like 'wget', 'curl' or 'aria2'"
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fi
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# check ssh daemon
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#
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if [ -z "${ban_sshdaemon}" ]
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then
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utils="sshd dropbear"
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for util in ${utils}
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do
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if [ -x "$(command -v "${util}")" ]
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then
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if [ "$("/etc/init.d/${util}" enabled; printf "%u" ${?})" -eq 0 ]
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then
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ban_sshdaemon="${util}"
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break
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fi
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fi
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done
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fi
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if [ -z "${ban_sshdaemon}" ]
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then
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f_log "err" "ssh daemon not found, please install 'dropbear' or 'sshd'"
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fi
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}
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# create temporary files and directories
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#
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f_temp()
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{
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if [ -d "/tmp" ] && [ -z "${ban_tmpdir}" ]
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then
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ban_tmpdir="$(mktemp -p /tmp -d)"
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ban_tmpfile="$(mktemp -p "${ban_tmpdir}" -tu)"
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elif [ ! -d "/tmp" ]
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then
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f_log "err" "the temp directory '/tmp' does not exist or has not been mounted yet, please create the directory or raise the 'ban_triggerdelay' to defer the banIP start"
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fi
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if [ ! -f "${ban_pidfile}" ] || [ ! -s "${ban_pidfile}" ]
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then
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printf "%s" "${$}" > "${ban_pidfile}"
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fi
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}
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# remove temporary files and directories
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#
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f_rmtemp()
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{
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if [ -d "${ban_tmpdir}" ]
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then
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rm -rf "${ban_tmpdir}"
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fi
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> "${ban_pidfile}"
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}
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# remove backup files
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#
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f_rmbackup()
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{
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if [ -d "${ban_backupdir}" ]
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then
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rm -f "${ban_backupdir}"/banIP.*.gz
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fi
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}
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# iptables rules engine
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#
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f_iptrule()
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{
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local rc timeout="-w 5" action="${1}" rule="${2}"
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if [ "${src_name##*_}" = "6" ]
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then
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if [ -x "${ban_ipt6}" ]
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then
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rc="$("${ban_ipt6}" "${timeout}" -C ${rule} 2>/dev/null; printf "%u" ${?})"
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if { [ "${rc}" -ne 0 ] && { [ "${action}" = "-A" ] || [ "${action}" = "-I" ]; } } || \
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{ [ "${rc}" -eq 0 ] && [ "${action}" = "-D" ]; }
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then
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"${ban_ipt6}" "${timeout}" "${action}" ${rule} 2>/dev/null
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fi
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fi
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else
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if [ -x "${ban_ipt}" ]
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then
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rc="$("${ban_ipt}" "${timeout}" -C ${rule} 2>/dev/null; printf "%u" ${?})"
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if { [ "${rc}" -ne 0 ] && { [ "${action}" = "-A" ] || [ "${action}" = "-I" ]; } } || \
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{ [ "${rc}" -eq 0 ] && [ "${action}" = "-D" ]; }
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then
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"${ban_ipt}" "${timeout}" "${action}" ${rule} 2>/dev/null
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fi
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fi
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fi
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if [ "${?}" -ne 0 ]
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then
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> "${tmp_err}"
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f_log "info" "can't create iptables rule: action: '${action:-"-"}', rule: '${rule:-"-"}'"
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fi
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}
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# remove/add iptables rules
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#
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f_iptadd()
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{
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local rm="${1}" dev
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for dev in ${ban_dev_all}
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do
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f_iptrule "-D" "${ban_chain} -i ${dev} -m conntrack --ctstate NEW -m set --match-set ${src_name} src -j ${target_src}"
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f_iptrule "-D" "${ban_chain} -o ${dev} -m conntrack --ctstate NEW -m set --match-set ${src_name} dst -j ${target_dst}"
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done
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if [ -z "${rm}" ] && [ "${cnt}" -gt 0 ]
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then
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if [ "${src_ruletype}" != "dst" ]
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then
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if [ "${src_name##*_}" = "6" ]
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then
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# dummy, special IPv6 rules
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/bin/true
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else
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f_iptrule "-I" "${wan_input} -p udp --dport 67:68 --sport 67:68 -j RETURN"
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fi
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f_iptrule "-A" "${wan_input} -j ${ban_chain}"
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f_iptrule "-A" "${wan_forward} -j ${ban_chain}"
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for dev in ${ban_dev}
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do
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f_iptrule "${action:-"-A"}" "${ban_chain} -i ${dev} -m conntrack --ctstate NEW -m set --match-set ${src_name} src -j ${target_src}"
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done
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fi
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if [ "${src_ruletype}" != "src" ]
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then
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if [ "${src_name##*_}" = "6" ]
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then
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# dummy, special IPv6 rules
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/bin/true
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else
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f_iptrule "-I" "${lan_input} -p udp --dport 67:68 --sport 67:68 -j RETURN"
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fi
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f_iptrule "-A" "${lan_input} -j ${ban_chain}"
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f_iptrule "-A" "${lan_forward} -j ${ban_chain}"
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for dev in ${ban_dev}
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do
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f_iptrule "${action:-"-A"}" "${ban_chain} -o ${dev} -m conntrack --ctstate NEW -m set --match-set ${src_name} dst -j ${target_dst}"
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done
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fi
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else
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if [ -x "${ban_ipset}" ] && [ -n "$("${ban_ipset}" -q -n list "${src_name}")" ]
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then
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"${ban_ipset}" -q destroy "${src_name}"
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fi
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fi
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}
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# ipset/iptables actions
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#
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f_ipset()
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{
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local out_rc source action ruleset ruleset_6 rule cnt=0 cnt_ip=0 cnt_cidr=0 timeout="-w 5" mode="${1}" in_rc="${src_rc:-0}"
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if [ "${src_name%_6*}" = "whitelist" ]
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then
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target_src="RETURN"
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target_dst="RETURN"
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action="-I"
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fi
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case "${mode}" in
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"backup")
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gzip -cf "${tmp_load}" 2>/dev/null > "${ban_backupdir}/banIP.${src_name}.gz"
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out_rc="${?:-"${in_rc}"}"
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f_log "debug" "f_ipset ::: name: ${src_name:-"-"}, mode: ${mode:-"-"}, out_rc: ${out_rc}"
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return "${out_rc}"
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;;
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"restore")
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if [ -f "${ban_backupdir}/banIP.${src_name}.gz" ]
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then
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zcat "${ban_backupdir}/banIP.${src_name}.gz" 2>/dev/null > "${tmp_load}"
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out_rc="${?}"
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fi
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out_rc="${out_rc:-"${in_rc}"}"
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f_log "debug" "f_ipset ::: name: ${src_name:-"-"}, mode: ${mode:-"-"}, out_rc: ${out_rc}"
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return "${out_rc}"
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;;
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"remove")
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if [ -f "${ban_backupdir}/banIP.${src_name}.gz" ]
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then
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rm -f "${ban_backupdir}/banIP.${src_name}.gz"
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out_rc="${?}"
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fi
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out_rc="${out_rc:-"${in_rc}"}"
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f_log "debug" "f_ipset ::: name: ${src_name:-"-"}, mode: ${mode:-"-"}, out_rc: ${out_rc}"
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return "${out_rc}"
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;;
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"initial")
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if [ -x "${ban_ipt}" ] && [ -z "$("${ban_ipt}" "${timeout}" -nL "${ban_chain}" 2>/dev/null)" ]
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then
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"${ban_ipt}" "${timeout}" -N "${ban_chain}" 2>/dev/null
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out_rc="${?}"
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elif [ -x "${ban_ipt}" ]
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then
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src_name="ruleset"
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ruleset="${ban_wan_input_chain:-"input_wan_rule"} ${ban_wan_forward_chain:-"forwarding_wan_rule"} ${ban_lan_input_chain:-"input_lan_rule"} ${ban_lan_forward_chain:-"forwarding_lan_rule"}"
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for rule in ${ruleset}
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do
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f_iptrule "-D" "${rule} -j ${ban_chain}"
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done
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fi
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if [ -x "${ban_ipt6}" ] && [ -z "$("${ban_ipt6}" "${timeout}" -nL "${ban_chain}" 2>/dev/null)" ]
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then
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"${ban_ipt6}" "${timeout}" -N "${ban_chain}" 2>/dev/null
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out_rc="${?}"
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elif [ -x "${ban_ipt6}" ]
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then
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src_name="ruleset_6"
|
|
ruleset_6="${ban_wan_input_chain_6:-"input_wan_rule"} ${ban_wan_forward_chain_6:-"forwarding_wan_rule"} ${ban_lan_input_chain_6:-"input_lan_rule"} ${ban_lan_forward_chain_6:-"forwarding_lan_rule"}"
|
|
for rule in ${ruleset_6}
|
|
do
|
|
f_iptrule "-D" "${rule} -j ${ban_chain}"
|
|
done
|
|
fi
|
|
out_rc="${out_rc:-"${in_rc}"}"
|
|
f_log "debug" "f_ipset ::: name: -, mode: ${mode:-"-"}, chain: ${ban_chain:-"-"}, ruleset: ${ruleset:-"-"}, ruleset_6: ${ruleset_6:-"-"}, out_rc: ${out_rc}"
|
|
return "${out_rc}"
|
|
;;
|
|
"create")
|
|
if [ -x "${ban_ipset}" ]
|
|
then
|
|
if [ -s "${tmp_file}" ] && [ -z "$("${ban_ipset}" -q -n list "${src_name}")" ]
|
|
then
|
|
"${ban_ipset}" -q create "${src_name}" hash:"${src_settype}" hashsize 64 maxelem 262144 family "${src_setipv}" counters
|
|
out_rc="${?}"
|
|
else
|
|
"${ban_ipset}" -q flush "${src_name}"
|
|
out_rc="${?}"
|
|
fi
|
|
if [ -s "${tmp_file}" ] && [ "${out_rc}" -eq 0 ]
|
|
then
|
|
"${ban_ipset}" -q -! restore < "${tmp_file}"
|
|
out_rc="${?}"
|
|
if [ "${out_rc}" -eq 0 ]
|
|
then
|
|
"${ban_ipset}" -q save "${src_name}" > "${tmp_file}"
|
|
cnt="$(($(wc -l 2>/dev/null < "${tmp_file}")-1))"
|
|
cnt_cidr="$(grep -cF "/" "${tmp_file}")"
|
|
cnt_ip="$((cnt-cnt_cidr))"
|
|
printf "%s\\n" "${cnt}" > "${tmp_cnt}"
|
|
fi
|
|
fi
|
|
f_iptadd
|
|
fi
|
|
end_ts="$(date +%s)"
|
|
out_rc="${out_rc:-"${in_rc}"}"
|
|
f_log "debug" "f_ipset ::: name: ${src_name:-"-"}, mode: ${mode:-"-"}, settype: ${src_settype:-"-"}, setipv: ${src_setipv:-"-"}, ruletype: ${src_ruletype:-"-"}, count(sum/ip/cidr): ${cnt}/${cnt_ip}/${cnt_cidr}, time: $((end_ts-start_ts)), out_rc: ${out_rc}"
|
|
return "${out_rc}"
|
|
;;
|
|
"refresh")
|
|
if [ -x "${ban_ipset}" ] && [ -n "$("${ban_ipset}" -q -n list "${src_name}")" ]
|
|
then
|
|
"${ban_ipset}" -q save "${src_name}" > "${tmp_file}"
|
|
out_rc="${?}"
|
|
if [ -s "${tmp_file}" ] && [ "${out_rc}" -eq 0 ]
|
|
then
|
|
cnt="$(($(wc -l 2>/dev/null < "${tmp_file}")-1))"
|
|
cnt_cidr="$(grep -cF "/" "${tmp_file}")"
|
|
cnt_ip="$((cnt-cnt_cidr))"
|
|
printf "%s\\n" "${cnt}" > "${tmp_cnt}"
|
|
fi
|
|
f_iptadd
|
|
fi
|
|
end_ts="$(date +%s)"
|
|
out_rc="${out_rc:-"${in_rc}"}"
|
|
f_log "debug" "f_ipset ::: name: ${src_name:-"-"}, mode: ${mode:-"-"}, count: ${cnt}/${cnt_ip}/${cnt_cidr}, time: $((end_ts-start_ts)), out_rc: ${out_rc}"
|
|
return "${out_rc}"
|
|
;;
|
|
"flush")
|
|
f_iptadd "remove"
|
|
|
|
if [ -x "${ban_ipset}" ] && [ -n "$("${ban_ipset}" -q -n list "${src_name}")" ]
|
|
then
|
|
"${ban_ipset}" -q flush "${src_name}"
|
|
"${ban_ipset}" -q destroy "${src_name}"
|
|
fi
|
|
f_log "debug" "f_ipset ::: name: ${src_name:-"-"}, mode: ${mode:-"-"}"
|
|
;;
|
|
"destroy")
|
|
if [ -x "${ban_ipt}" ] && [ -x "${ban_ipt_save}" ] && [ -x "${ban_ipt_restore}" ] && \
|
|
[ -n "$("${ban_ipt}" "${timeout}" -nL "${ban_chain}" 2>/dev/null)" ]
|
|
then
|
|
"${ban_ipt_save}" | grep -v -- "-j ${ban_chain}" | "${ban_ipt_restore}"
|
|
"${ban_ipt}" "${timeout}" -F "${ban_chain}" 2>/dev/null
|
|
"${ban_ipt}" "${timeout}" -X "${ban_chain}" 2>/dev/null
|
|
fi
|
|
if [ -x "${ban_ipt6}" ] && [ -x "${ban_ipt6_save}" ] && [ -x "${ban_ipt6_restore}" ] && \
|
|
[ -n "$("${ban_ipt6}" "${timeout}" -nL "${ban_chain}" 2>/dev/null)" ]
|
|
then
|
|
"${ban_ipt6_save}" | grep -v -- "-j ${ban_chain}" | "${ban_ipt6_restore}"
|
|
"${ban_ipt6}" "${timeout}" -F "${ban_chain}" 2>/dev/null
|
|
"${ban_ipt6}" "${timeout}" -X "${ban_chain}" 2>/dev/null
|
|
fi
|
|
for source in ${ban_sources}
|
|
do
|
|
if [ -x "${ban_ipset}" ] && [ -n "$("${ban_ipset}" -q -n list "${source}")" ]
|
|
then
|
|
"${ban_ipset}" -q destroy "${source}"
|
|
fi
|
|
done
|
|
f_log "debug" "f_ipset ::: name: ${src_name:-"-"}, mode: ${mode:-"-"}"
|
|
;;
|
|
esac
|
|
}
|
|
|
|
# write to syslog
|
|
#
|
|
f_log()
|
|
{
|
|
local class="${1}" log_msg="${2}"
|
|
|
|
if [ -n "${log_msg}" ] && { [ "${class}" != "debug" ] || [ "${ban_debug}" -eq 1 ]; }
|
|
then
|
|
if [ -x "${ban_logger}" ]
|
|
then
|
|
"${ban_logger}" -p "${class}" -t "banIP-${ban_ver}[${$}]" "${log_msg}"
|
|
else
|
|
printf "%s %s %s\\n" "${class}" "banIP-${ban_ver}[${$}]" "${log_msg}"
|
|
fi
|
|
if [ "${class}" = "err" ]
|
|
then
|
|
f_jsnup error
|
|
f_ipset destroy
|
|
f_rmbackup
|
|
f_rmtemp
|
|
exit 1
|
|
fi
|
|
fi
|
|
}
|
|
|
|
# start log service to trace failed ssh/luci logins
|
|
#
|
|
f_bgserv()
|
|
{
|
|
local bg_pid status="${1}"
|
|
|
|
bg_pid="$(pgrep -f "^/bin/sh ${ban_logservice}.*|^logread -f -e ${ban_sshdaemon}\|luci: failed login|^grep -qE Exit before auth|luci: failed login|[0-9]+ \[preauth\]$" | awk '{ORS=" "; print $1}')"
|
|
if [ -z "${bg_pid}" ] && [ "${status}" = "start" ] \
|
|
&& [ -x "${ban_logservice}" ] && [ "${ban_realtime}" = "true" ]
|
|
then
|
|
( "${ban_logservice}" "${ban_ver}" "${ban_sshdaemon}" & )
|
|
elif [ -n "${bg_pid}" ] && [ "${status}" = "stop" ]
|
|
then
|
|
kill -HUP "${bg_pid}" 2>/dev/null
|
|
fi
|
|
f_log "debug" "f_bgserv ::: status: ${status:-"-"}, bg_pid: ${bg_pid:-"-"}, ban_realtime: ${ban_realtime:-"-"}, log_service: ${ban_logservice:-"-"}"
|
|
}
|
|
|
|
# main function for banIP processing
|
|
#
|
|
f_main()
|
|
{
|
|
local pid pid_list start_ts end_ts ip tmp_raw tmp_cnt tmp_load tmp_file mem_total mem_free cnt=1
|
|
local src_name src_on src_url src_rset src_setipv src_settype src_ruletype src_cat src_log src_addon src_ts src_rc
|
|
local wan_input wan_forward lan_input lan_forward target_src target_dst ssh_log luci_log
|
|
|
|
if [ "${ban_sshdaemon}" = "dropbear" ]
|
|
then
|
|
ssh_log="$(logread -e "${ban_sshdaemon}" | grep -o "${ban_sshdaemon}.*" | sed 's/:[0-9]*$//g')"
|
|
elif [ "${ban_sshdaemon}" = "sshd" ]
|
|
then
|
|
ssh_log="$(logread -e "${ban_sshdaemon}" | grep -o "${ban_sshdaemon}.*" | sed 's/ port.*$//g')"
|
|
fi
|
|
luci_log="$(logread -e "luci: failed login" | grep -o "luci:.*")"
|
|
mem_total="$(awk '/^MemTotal/ {print int($2/1000)}' "/proc/meminfo" 2>/dev/null)"
|
|
mem_free="$(awk '/^MemFree/ {print int($2/1000)}' "/proc/meminfo" 2>/dev/null)"
|
|
f_log "debug" "f_main ::: fetch_util: ${ban_fetchutil:-"-"}, fetch_parm: ${ban_fetchparm:-"-"}, ssh_daemon: ${ban_sshdaemon}, interface(s): ${ban_iface:-"-"}, device(s): ${ban_dev:-"-"}, all_devices: ${ban_dev_all:-"-"}, backup_dir: ${ban_backupdir:-"-"}, mem_total: ${mem_total:-0}, mem_free: ${mem_free:-0}, max_queue: ${ban_maxqueue}"
|
|
|
|
# chain creation
|
|
#
|
|
f_ipset initial
|
|
if [ "${?}" -ne 0 ]
|
|
then
|
|
f_log "err" "banIP processing failed, fatal error during iptables chain creation (${ban_sysver})"
|
|
fi
|
|
|
|
# main loop
|
|
#
|
|
for src_name in ${ban_sources}
|
|
do
|
|
unset src_on
|
|
if [ "${src_name##*_}" = "6" ]
|
|
then
|
|
if [ -x "${ban_ipt6}" ]
|
|
then
|
|
src_on="$(eval printf "%s" \"\$\{ban_src_on_6_${src_name%_6*}\}\")"
|
|
src_url="$(eval printf "%s" \"\$\{ban_src_6_${src_name%_6*}\}\")"
|
|
src_rset="$(eval printf "%s" \"\$\{ban_src_rset_6_${src_name%_6*}\}\")"
|
|
src_setipv="inet6"
|
|
wan_input="${ban_wan_input_chain_6:-"input_wan_rule"}"
|
|
wan_forward="${ban_wan_forward_chain_6:-"forwarding_wan_rule"}"
|
|
lan_input="${ban_lan_input_chain_6:-"input_lan_rule"}"
|
|
lan_forward="${ban_lan_forward_chain_6:-"forwarding_lan_rule"}"
|
|
target_src="${ban_target_src_6:-"DROP"}"
|
|
target_dst="${ban_target_dst_6:-"REJECT"}"
|
|
fi
|
|
else
|
|
if [ -x "${ban_ipt}" ]
|
|
then
|
|
src_on="$(eval printf "%s" \"\$\{ban_src_on_${src_name}\}\")"
|
|
src_url="$(eval printf "%s" \"\$\{ban_src_${src_name}\}\")"
|
|
src_rset="$(eval printf "%s" \"\$\{ban_src_rset_${src_name}\}\")"
|
|
src_setipv="inet"
|
|
wan_input="${ban_wan_input_chain:-"input_wan_rule"}"
|
|
wan_forward="${ban_wan_forward_chain:-"forwarding_wan_rule"}"
|
|
lan_input="${ban_lan_input_chain:-"input_lan_rule"}"
|
|
lan_forward="${ban_lan_forward_chain:-"forwarding_lan_rule"}"
|
|
target_src="${ban_target_src:-"DROP"}"
|
|
target_dst="${ban_target_dst:-"REJECT"}"
|
|
fi
|
|
fi
|
|
src_settype="$(eval printf "%s" \"\$\{ban_src_settype_${src_name%_6*}\}\")"
|
|
src_ruletype="$(eval printf "%s" \"\$\{ban_src_ruletype_${src_name%_6*}\}\")"
|
|
src_cat="$(eval printf "%s" \"\$\{ban_src_cat_${src_name%_6*}\}\")"
|
|
src_addon=""
|
|
src_rc=4
|
|
tmp_load="${ban_tmpfile}.${src_name}.load"
|
|
tmp_file="${ban_tmpfile}.${src_name}.file"
|
|
tmp_raw="${tmp_file}.raw"
|
|
tmp_cnt="${tmp_file}.cnt"
|
|
tmp_err="${tmp_file}.err"
|
|
|
|
# basic pre-checks
|
|
#
|
|
f_log "debug" "f_main ::: name: ${src_name}, src_on: ${src_on:-"-"}"
|
|
|
|
if [ -z "${src_on}" ] || [ "${src_on}" != "1" ] || [ -z "${src_url}" ] || \
|
|
[ -z "${src_rset}" ] || [ -z "${src_settype}" ] || [ -z "${src_ruletype}" ]
|
|
then
|
|
f_ipset flush
|
|
f_ipset remove
|
|
continue
|
|
elif [ "${ban_action}" = "refresh" ] && [ ! -f "${src_url}" ]
|
|
then
|
|
start_ts="$(date +%s)"
|
|
f_ipset refresh
|
|
if [ "${?}" -eq 0 ]
|
|
then
|
|
continue
|
|
fi
|
|
fi
|
|
|
|
# download queue processing
|
|
#
|
|
(
|
|
start_ts="$(date +%s)"
|
|
if [ "${ban_action}" = "start" ] && [ ! -f "${src_url}" ]
|
|
then
|
|
f_ipset restore
|
|
fi
|
|
src_rc="${?}"
|
|
if [ "${src_rc}" -ne 0 ] || [ ! -s "${tmp_load}" ]
|
|
then
|
|
if [ -f "${src_url}" ]
|
|
then
|
|
src_log="$(cat "${src_url}" 2>/dev/null > "${tmp_load}")"
|
|
src_rc="${?}"
|
|
case "${src_name}" in
|
|
"whitelist")
|
|
src_addon="${ban_subnets}"
|
|
;;
|
|
"whitelist_6")
|
|
src_addon="${ban_subnets6}"
|
|
;;
|
|
"blacklist")
|
|
if [ "${ban_sshdaemon}" = "dropbear" ]
|
|
then
|
|
pid_list="$(printf "%s\\n" "${ssh_log}" | grep -F "Exit before auth" | awk 'match($0,/(\[[0-9]+\])/){ORS=" ";print substr($0,RSTART,RLENGTH)}')"
|
|
for pid in ${pid_list}
|
|
do
|
|
src_addon="${src_addon} $(printf "%s\\n" "${ssh_log}" | grep -F "${pid}" | awk 'match($0,/([0-9]{1,3}\.){3}[0-9]{1,3}$/){ORS=" ";print substr($0,RSTART,RLENGTH);exit}')"
|
|
done
|
|
elif [ "${ban_sshdaemon}" = "sshd" ]
|
|
then
|
|
src_addon="$(printf "%s\\n" "${ssh_log}" | grep -F "error: maximum authentication attempts exceeded" | awk 'match($0,/([0-9]{1,3}\.){3}[0-9]{1,3}$/){ORS=" ";print substr($0,RSTART,RLENGTH)}')"
|
|
fi
|
|
src_addon="${src_addon} $(printf "%s\\n" "${luci_log}" | awk 'match($0,/([0-9]{1,3}\.){3}[0-9]{1,3}$/){ORS=" ";print substr($0,RSTART,RLENGTH)}')"
|
|
;;
|
|
"blacklist_6")
|
|
if [ "${ban_sshdaemon}" = "dropbear" ]
|
|
then
|
|
pid_list="$(printf "%s\\n" "${ssh_log}" | grep -F "Exit before auth" | awk 'match($0,/(\[[0-9]+\])/){ORS=" ";print substr($0,RSTART,RLENGTH)}')"
|
|
for pid in ${pid_list}
|
|
do
|
|
src_addon="${src_addon} $(printf "%s\\n" "${ssh_log}" | grep -F "${pid}" | awk 'match($0,/(([0-9A-f]{0,4}::?){1,7}[0-9A-f]{0,4}$)/){ORS=" ";print substr($0,RSTART,RLENGTH);exit}')"
|
|
done
|
|
elif [ "${ban_sshdaemon}" = "sshd" ]
|
|
then
|
|
src_addon="$(printf "%s\\n" "${ssh_log}" | grep -F "error: maximum authentication attempts exceeded" | awk 'match($0,/(([0-9A-f]{0,4}::?){1,7}[0-9A-f]{0,4}$)/){ORS=" ";print substr($0,RSTART,RLENGTH)}')"
|
|
fi
|
|
src_addon="${src_addon} $(printf "%s\\n" "${luci_log}" | awk 'match($0,/(([0-9A-f]{0,4}::?){1,7}[0-9A-f]{0,4}$)/){ORS=" ";print substr($0,RSTART,RLENGTH)}')"
|
|
;;
|
|
esac
|
|
for ip in ${src_addon}
|
|
do
|
|
if [ -z "$(grep -F "${ip}" "${src_url}")" ]
|
|
then
|
|
printf "%s\\n" "${ip}" >> "${tmp_load}"
|
|
if { [ "${src_name//_*/}" = "blacklist" ] && [ "${ban_autoblacklist}" -eq 1 ]; } || \
|
|
{ [ "${src_name//_*/}" = "whitelist" ] && [ "${ban_autowhitelist}" -eq 1 ]; }
|
|
then
|
|
src_ts="# auto-added $(date "+%d.%m.%Y %H:%M:%S")"
|
|
printf "%s %s\\n" "${ip}" "${src_ts}" >> "${src_url}"
|
|
fi
|
|
fi
|
|
done
|
|
elif [ -n "${src_cat}" ]
|
|
then
|
|
if [ "${src_cat//[0-9]/}" != "${src_cat}" ]
|
|
then
|
|
for as in ${src_cat}
|
|
do
|
|
src_log="$("${ban_fetchutil}" ${ban_fetchparm} "${tmp_raw}" "${src_url}AS${as}" 2>&1)"
|
|
src_rc="${?}"
|
|
if [ "${src_rc}" -eq 0 ]
|
|
then
|
|
jsonfilter -i "${tmp_raw}" -e '@.data.prefixes.*.prefix' 2>/dev/null >> "${tmp_load}"
|
|
else
|
|
break
|
|
fi
|
|
done
|
|
if [ "${src_rc}" -eq 0 ]
|
|
then
|
|
f_ipset backup
|
|
elif [ "${ban_action}" != "start" ]
|
|
then
|
|
f_ipset restore
|
|
fi
|
|
else
|
|
for co in ${src_cat}
|
|
do
|
|
src_log="$("${ban_fetchutil}" ${ban_fetchparm} "${tmp_raw}" "${src_url}${co}&v4_format=prefix" 2>&1)"
|
|
src_rc="${?}"
|
|
if [ "${src_rc}" -eq 0 ]
|
|
then
|
|
if [ "${src_name##*_}" = "6" ]
|
|
then
|
|
jsonfilter -i "${tmp_raw}" -e '@.data.resources.ipv6.*' 2>/dev/null >> "${tmp_load}"
|
|
else
|
|
jsonfilter -i "${tmp_raw}" -e '@.data.resources.ipv4.*' 2>/dev/null >> "${tmp_load}"
|
|
fi
|
|
else
|
|
break
|
|
fi
|
|
done
|
|
if [ "${src_rc}" -eq 0 ]
|
|
then
|
|
f_ipset backup
|
|
elif [ "${ban_action}" != "start" ]
|
|
then
|
|
f_ipset restore
|
|
fi
|
|
fi
|
|
else
|
|
src_log="$("${ban_fetchutil}" ${ban_fetchparm} "${tmp_raw}" "${src_url}" 2>&1)"
|
|
src_rc="${?}"
|
|
if [ "${src_rc}" -eq 0 ]
|
|
then
|
|
zcat "${tmp_raw}" 2>/dev/null > "${tmp_load}"
|
|
src_rc="${?}"
|
|
if [ "${src_rc}" -ne 0 ]
|
|
then
|
|
mv -f "${tmp_raw}" "${tmp_load}"
|
|
src_rc="${?}"
|
|
fi
|
|
if [ "${src_rc}" -eq 0 ]
|
|
then
|
|
f_ipset backup
|
|
src_rc="${?}"
|
|
fi
|
|
elif [ "${ban_action}" != "start" ]
|
|
then
|
|
f_ipset restore
|
|
src_rc="${?}"
|
|
fi
|
|
fi
|
|
fi
|
|
|
|
if [ "${src_rc}" -eq 0 ]
|
|
then
|
|
awk "${src_rset}" "${tmp_load}" 2>/dev/null > "${tmp_file}"
|
|
src_rc="${?}"
|
|
if [ "${src_rc}" -eq 0 ]
|
|
then
|
|
f_ipset create
|
|
src_rc="${?}"
|
|
elif [ "${ban_action}" != "refresh" ]
|
|
then
|
|
f_ipset refresh
|
|
src_rc="${?}"
|
|
fi
|
|
else
|
|
src_log="$(printf "%s" "${src_log}" | awk '{ORS=" ";print $0}')"
|
|
if [ "${ban_action}" != "refresh" ]
|
|
then
|
|
f_ipset refresh
|
|
src_rc="${?}"
|
|
fi
|
|
f_log "debug" "f_main ::: name: ${src_name}, url: ${src_url}, rc: ${src_rc}, log: ${src_log:-"-"}"
|
|
fi
|
|
)&
|
|
hold="$((cnt%ban_maxqueue))"
|
|
if [ "${hold}" -eq 0 ]
|
|
then
|
|
wait
|
|
fi
|
|
cnt="$((cnt+1))"
|
|
done
|
|
wait
|
|
|
|
if [ -z "$(ls "${ban_tmpfile}".*.err 2>/dev/null)" ]
|
|
then
|
|
for cnt in $(cat "${ban_tmpfile}".*.cnt 2>/dev/null)
|
|
do
|
|
ban_cnt="$((ban_cnt+cnt))"
|
|
done
|
|
if [ "${ban_cnt}" -gt 0 ]
|
|
then
|
|
ban_setcnt="$(ls "${ban_tmpfile}".*.cnt 2>/dev/null | wc -l)"
|
|
fi
|
|
f_log "info" "${ban_setcnt} IPSets with overall ${ban_cnt} IPs/Prefixes loaded successfully (${ban_sysver})"
|
|
f_bgserv "start"
|
|
f_jsnup
|
|
f_rmtemp
|
|
else
|
|
f_log "err" "banIP processing failed, fatal iptables error(s) during subshell processing (${ban_sysver})"
|
|
fi
|
|
}
|
|
|
|
# update runtime information
|
|
#
|
|
f_jsnup()
|
|
{
|
|
local rundate status="${1:-"enabled"}"
|
|
|
|
rundate="$(date "+%d.%m.%Y %H:%M:%S")"
|
|
ban_cntinfo="${ban_setcnt} IPSets with overall ${ban_cnt} IPs/Prefixes"
|
|
|
|
> "${ban_rtfile}"
|
|
json_load_file "${ban_rtfile}" >/dev/null 2>&1
|
|
json_init
|
|
json_add_object "data"
|
|
json_add_string "status" "${status}"
|
|
json_add_string "version" "${ban_ver}"
|
|
json_add_string "util_info" "${ban_fetchutil:-"-"}, ${ban_realtime:-"-"}"
|
|
json_add_string "ipset_info" "${ban_cntinfo:-"-"}"
|
|
json_add_string "backup_dir" "${ban_backupdir}"
|
|
json_add_string "last_run" "${rundate:-"-"}"
|
|
json_add_string "system" "${ban_sysver}"
|
|
json_close_object
|
|
json_dump > "${ban_rtfile}"
|
|
f_log "debug" "f_jsnup ::: status: ${status}, setcnt: ${ban_setcnt}, cnt: ${ban_cnt}"
|
|
}
|
|
|
|
# source required system libraries
|
|
#
|
|
if [ -r "/lib/functions.sh" ] && [ -r "/lib/functions/network.sh" ] && [ -r "/usr/share/libubox/jshn.sh" ]
|
|
then
|
|
. "/lib/functions.sh"
|
|
. "/lib/functions/network.sh"
|
|
. "/usr/share/libubox/jshn.sh"
|
|
else
|
|
f_log "err" "system libraries not found"
|
|
fi
|
|
|
|
# handle different banIP actions
|
|
#
|
|
f_envload
|
|
case "${ban_action}" in
|
|
"stop")
|
|
f_bgserv "stop"
|
|
f_jsnup stopped
|
|
f_ipset destroy
|
|
f_rmbackup
|
|
f_rmtemp
|
|
;;
|
|
"start"|"restart"|"reload"|"refresh")
|
|
f_bgserv "stop"
|
|
f_envcheck
|
|
f_main
|
|
;;
|
|
esac
|