Merge pull request #9948 from dibdot/banIP

banip: update 0.2.0

net/banip/Makefile

@@ -6,7 +6,7 @@
 include $(TOPDIR)/rules.mk
 
 PKG_NAME:=banip
-PKG_VERSION:=0.1.5
+PKG_VERSION:=0.2.0
 PKG_RELEASE:=1
 PKG_LICENSE:=GPL-3.0+
 PKG_MAINTAINER:=Dirk Brenken <dev@brenken.org>

net/banip/files/README.md

@@ -6,39 +6,36 @@ IP address blocking is commonly used to protect against brute force attacks, pre
 ## Main Features
 * support many IP blocklist sources (free for private usage, for commercial use please check their individual licenses):
 * zero-conf like automatic installation & setup, usually no manual changes needed
-* supports six different download utilities: uclient-fetch, wget, curl, aria2c, wget-nossl, busybox-wget
+* supports four different download utilities: uclient-fetch, wget, curl, aria2c
 * Really fast downloads & list processing as they are handled in parallel as background jobs in a configurable 'Download Queue'
-* provides 'http only' mode without installed ssl library for all non-SSL blocklist sources
 * full IPv4 and IPv6 support
 * ipsets (one per source) are used to ban a large number of IP addresses
 * supports blocking by ASN numbers
 * supports blocking by iso country codes
 * supports local white & blacklist (IPv4, IPv6 & CIDR notation), located by default in /etc/banip/banip.whitelist and /etc/banip/banip.blacklist
-* auto-add unsuccessful ssh login attempts to local blacklist (see 'ban_autoblacklist' option)
+* auto-add unsuccessful ssh login attempts to 'dropbear' or 'sshd' to local blacklist (see 'ban_autoblacklist' option)
 * auto-add the uplink subnet to local whitelist (see 'ban_autowhitelist' option)
 * per source configuration of SRC (incoming) and DST (outgoing)
 * integrated IPSet-Lookup
 * integrated RIPE-Lookup
 * blocklist source parsing by fast & flexible regex rulesets
 * minimal status & error logging to syslog, enable debug logging to receive more output
-* procd based init system support (start/stop/restart/reload/status)
+* procd based init system support (start/stop/restart/reload/refresh/status)
 * procd network interface trigger support
-* automatic blocklist backup & restore, they will be used in case of download errors or during startup in backup mode
-* 'backup mode' to re-use blocklist backups during startup, get fresh lists via reload or restart action
+* automatic blocklist backup & restore, they will be used in case of download errors or during startup
 * output comprehensive runtime information via LuCI or via 'status' init command
 * strong LuCI support
 * optional: add new banIP sources on your own
 
 ## Prerequisites
-* [OpenWrt](https://openwrt.org), tested with the stable release series (18.06) and with the latest snapshot
+* [OpenWrt](https://openwrt.org), tested with the stable release series (19.07) and with the latest snapshot
 * a download utility:
-    * to support all blocklist sources a full version (with ssl support) of 'wget', 'uclient-fetch' with one of the 'libustream-*' ssl libraries, 'aria2c' or 'curl' is required
-    * for limited devices with real memory constraints, banIP provides also a 'http only' option and supports wget-nossl and uclient-fetch (without libustream-ssl) as well
+    * to support all blocklist sources a full version with ssl support of 'wget', 'uclient-fetch' with one of the 'libustream-*' ssl libraries, 'aria2c' or 'curl' is required
 
 ## Installation & Usage
 * install 'banip' (_opkg install banip_)
 * at minimum configure the needed IP blocklist sources, the download utility and enable the banIP service in _/etc/config/banip_
-* control the banip service manually with _/etc/init.d/banip_ start/stop/restart/reload/status or use the LuCI frontend
+* control the banip service manually with _/etc/init.d/banip_ start/stop/restart/reload/refresh/status or use the LuCI frontend
 
 ## LuCI banIP companion package
 * it's recommended to use the provided LuCI frontend to control all aspects of banIP
@@ -57,10 +54,10 @@ IP address blocking is commonly used to protect against brute force attacks, pre
     * ban\_debug => enable/disable banIP debug output (bool/default: '0', disabled)
     * ban\_nice => set the nice level of the banIP process and all sub-processes (int/default: '0', standard priority)
     * ban\_triggerdelay => additional trigger delay in seconds before banIP processing begins (int/default: '2')
-    * ban\_backup => create compressed blocklist backups, they will be used in case of download errors or during startup in 'backup mode' (bool/default: '0', disabled)
-    * ban\_backupdir => target directory for adblock backups (default: not set)
-    * ban\_backupboot => do not automatically update blocklists during startup, use their backups instead (bool/default: '0', disabled)
-    * ban\_maxqueue => size of the download queue to handle downloads & IPSet processing in parallel (int/default: '8')
+    * ban\_backupdir => target directory for banIP backups (default: '/tmp')
+    * ban\_sshdaemon => select the SSH daemon for logfile parsing, 'dropbear' or 'sshd' (default: 'dropbear')
+    * ban\_starttype => select the used start type during boot, 'start' or 'reload' (default: 'start')
+    * ban\_maxqueue => size of the download queue to handle downloads & IPSet processing in parallel (int/default: '4')
     * ban\_fetchparm => special config options for the download utility (default: not set)
     * ban\_autoblacklist => store auto-addons temporary in ipset and permanently in local blacklist as well (bool/default: '1', enabled)
     * ban\_autowhitelist => store auto-addons temporary in ipset and permanently in local whitelist as well (bool/default: '1', enabled)
@@ -72,14 +69,15 @@ IP address blocking is commonly used to protect against brute force attacks, pre
 /etc/init.d/banip status
 ::: banIP runtime information
   + status     : enabled
-  + version    : 0.1.0
+  + version    : 0.2.0
   + fetch_info : /bin/uclient-fetch (libustream-ssl)
-  + ipset_info : 1 IPSets with overall 516 IPs/Prefixes (backup mode)
-  + last_run   : 05.01.2019 14:48:18
-  + system     : TP-LINK RE450, OpenWrt SNAPSHOT r8910+72-25d8aa7d02
+  + ipset_info : 11 IPSets with overall 118359 IPs/Prefixes
+  + backup_dir : /tmp
+  + last_run   : 09.09.2019 16:49:40
+  + system     : UBNT-ERX, OpenWrt SNAPSHOT r10962-c19b9f9a26
 </code></pre>
   
-**cronjob for a regular block list update (/etc/crontabs/root):**
+**cronjob for a regular IPSet blocklist update (/etc/crontabs/root):**
 
 <pre><code>
 0 06 * * *    /etc/init.d/banip reload

net/banip/files/banip.conf

@@ -7,7 +7,6 @@ config banip 'global'
 
 config banip 'extra'
 	option ban_debug '0'
-	option ban_backup '0'
 	option ban_maxqueue '4'
 
 config source 'whitelist'
@@ -83,7 +82,7 @@ config source 'myip'
 	option ban_src_on_6 '0'
 
 config source 'yoyo'
-	option ban_src 'http://pgl.yoyo.org/adservers/iplist.php?ipformat=plain&showintro=0&mimetype=plaintext'
+	option ban_src 'https://pgl.yoyo.org/adservers/iplist.php?ipformat=plain&showintro=0&mimetype=plaintext'
 	option ban_src_desc 'IP blocklist provided by Peter Lowe (IPv4)'
 	option ban_src_rset '/^(([0-9]{1,3}\.){3}[0-9]{1,3})([[:space:]]|$)/{print \"add yoyo \"\$1}'
 	option ban_src_settype 'ip'
@@ -115,7 +114,7 @@ config source 'feodo'
 	option ban_src_on '0'
 
 config source 'dshield'
-	option ban_src 'http://feeds.dshield.org/block.txt'
+	option ban_src 'https://feeds.dshield.org/block.txt'
 	option ban_src_desc 'Dshield recommended IP blocklist. Contains top 20 attacking class C subnets (IPv4)'
 	option ban_src_rset '/^(([0-9]{1,3}\.){3}[0-9]{1,3})([[:space:]]|$)/{print \"add dshield \"\$1 \"/\"\$3}'
 	option ban_src_settype 'net'
@@ -131,7 +130,7 @@ config source 'proxy'
 	option ban_src_on '0'
 
 config source 'iblocklist'
-	option ban_src 'http://list.iblocklist.com/?list=dgxtneitpuvgqqcpfulq&fileformat=cidr&archiveformat=gz'
+	option ban_src 'https://list.iblocklist.com/?list=dgxtneitpuvgqqcpfulq&fileformat=cidr&archiveformat=gz'
 	option ban_src_desc 'Contains advertising trackers and a short list of bad/intrusive porn sites (IPv4)'
 	option ban_src_rset '/^(([0-9]{1,3}\.){3}[0-9]{1,3}(\/[0-9]{1,2})?)([[:space:]]|$)/{print \"add iblocklist \"\$1}'
 	option ban_src_settype 'net'

net/banip/files/banip.hotplug

@@ -1,12 +1,11 @@
 #!/bin/sh
 #
-
 ban_pidfile="/var/run/banip.pid"
-ban_enabled="$(/etc/init.d/banip enabled; printf "%u" ${?})"
+ban_enabled="$(/etc/init.d/banip enabled; printf "%u" "${?}")"
 
 if [ "${ban_enabled}" = "1" ] || [ ! -f "${ban_pidfile}" ] || [ -s "${ban_pidfile}" ] || [ "${ACTION}" != "add" ]
 then
 	exit 0
+else
+	/etc/init.d/banip refresh
 fi
-
-/etc/init.d/banip refresh

net/banip/files/banip.init

@@ -20,17 +20,17 @@ boot()
 
 start_service()
 {
-	if [ $("${ban_init}" enabled; printf "%u" ${?}) -eq 0 ]
+	if [ "$("${ban_init}" enabled; printf "%u" ${?})" -eq 0 ]
 	then
 		if [ "${ban_boot}" = "1" ]
 		then
 			return 0
 		fi
-		local nice="$(uci_get banip extra ban_nice)"
+		local nice="$(uci_get banip extra ban_nice "0")"
 		procd_open_instance "banip"
 		procd_set_param command "${ban_script}" "${@}"
 		procd_set_param pidfile "${ban_pidfile}"
-		procd_set_param nice ${nice:-0}
+		procd_set_param nice "${nice}"
 		procd_set_param stdout 1
 		procd_set_param stderr 1
 		procd_close_instance
@@ -39,6 +39,7 @@ start_service()
 
 refresh()
 {
+	[ -s "${ban_pidfile}" ] && return 1
 	rc_procd start_service refresh
 }
 
@@ -54,34 +55,40 @@ stop_service()
 
 status()
 {
-	local key keylist value rtfile="$(uci_get banip global ban_rtfile)"
+	local key keylist value 
+	local rtfile="$(uci_get banip global ban_rtfile "/tmp/ban_runtime.json")"
 
-	rtfile="${rtfile:-"/tmp/ban_runtime.json"}"
 	json_load_file "${rtfile}" >/dev/null 2>&1
 	json_select data >/dev/null 2>&1
-	if [ ${?} -eq 0 ]
+	if [ "${?}" -eq 0 ]
 	then
-		printf "%s\n" "::: banIP runtime information"
+		printf "%s\\n" "::: banIP runtime information"
 		json_get_keys keylist
 		for key in ${keylist}
 		do
 			json_get_var value "${key}"
-			printf "  + %-10s : %s\n" "${key}" "${value}"
+			printf "  + %-10s : %s\\n" "${key}" "${value}"
 		done
 	else
-		printf "%s\n" "::: no banIP runtime information available"
+		printf "%s\\n" "::: no banIP runtime information available"
 	fi
 }
 
 service_triggers()
 {
 	local ban_iface="$(uci_get banip global ban_iface)"
-	local delay="$(uci_get banip extra ban_triggerdelay)"
+	local delay="$(uci_get banip extra ban_triggerdelay "2")"
+	local type="$(uci_get banip extra ban_starttype "start")"
 
-	PROCD_RELOAD_DELAY=$((${delay:-2} * 1000))
-	for iface in ${ban_iface:-"wan"}
-	do
-		procd_add_interface_trigger "interface.*.up" "${iface}" "${ban_init}" start
-	done
+	PROCD_RELOAD_DELAY=$((${delay}*1000))
+	if [ -n "${ban_iface}" ]
+	then
+		for iface in ${ban_iface}
+		do
+			procd_add_interface_trigger "interface.*.up" "${iface}" "${ban_init}" "${type}"
+		done
+	else
+		procd_add_raw_trigger "interface.*.up" ${PROCD_RELOAD_DELAY} "${ban_init}" "${type}"
+	fi
 	procd_add_reload_trigger "banip"
 }

net/banip/files/banip.sh

@@ -6,19 +6,19 @@
 # You should have received a copy of the GNU General Public License
 # along with this program. If not, see <http://www.gnu.org/licenses/>.
 
+# (s)hellcheck exceptions
+# shellcheck disable=1091 disable=2039 disable=2143 disable=2181 disable=2188
+
 # set initial defaults
 #
 LC_ALL=C
 PATH="/usr/sbin:/usr/bin:/sbin:/bin"
-ban_ver="0.1.5"
-ban_sysver="unknown"
+ban_ver="0.2.0"
 ban_enabled=0
 ban_automatic="1"
 ban_sources=""
 ban_iface=""
 ban_debug=0
-ban_backup=0
-ban_backupboot=0
 ban_backupdir="/mnt"
 ban_maxqueue=4
 ban_autoblacklist=1
@@ -36,25 +36,18 @@ ban_chain="banIP"
 ban_action="${1:-"start"}"
 ban_pidfile="/var/run/banip.pid"
 ban_rtfile="/tmp/ban_runtime.json"
+ban_sshdaemon="dropbear"
 ban_setcnt=0
 ban_cnt=0
-ban_rc=0
 
 # load environment
 #
 f_envload()
 {
-	local sys_call sys_desc sys_model
-
 	# get system information
 	#
-	sys_call="$(ubus -S call system board 2>/dev/null)"
-	if [ -n "${sys_call}" ]
-	then
-		sys_desc="$(printf '%s' "${sys_call}" | jsonfilter -e '@.release.description')"
-		sys_model="$(printf '%s' "${sys_call}" | jsonfilter -e '@.model')"
-		ban_sysver="${sys_model}, ${sys_desc}"
-	fi
+	ban_sysver="$(ubus -S call system board 2>/dev/null | jsonfilter -e '@.model' -e '@.release.description' | \
+		awk 'BEGIN{ORS=", "}{print $0}' | awk '{print substr($0,1,length($0)-2)}')"
 
 	# parse 'global' and 'extra' section by callback
 	#
@@ -124,33 +117,32 @@ f_envcheck()
 {
 	local ssl_lib tmp
 
+	# check backup directory
+	#
+	if [ ! -d "${ban_backupdir}" ]
+	then
+		f_log "err" "the backup directory '${ban_backupdir}' does not exist/is not mounted yet, please create the directory or raise the 'ban_triggerdelay' to defer the banIP start"
+	fi
+
 	# check fetch utility
 	#
 	case "${ban_fetchutil}" in
-		uclient-fetch)
+		"uclient-fetch")
 			if [ -f "/lib/libustream-ssl.so" ]
 			then
 				ban_fetchparm="${ban_fetchparm:-"--timeout=20 --no-check-certificate -O"}"
 				ssl_lib="libustream-ssl"
-			else
-				ban_fetchparm="${ban_fetchparm:-"--timeout=20 -O"}"
 			fi
 		;;
-		wget)
+		"wget")
 			ban_fetchparm="${ban_fetchparm:-"--no-cache --no-cookies --max-redirect=0 --timeout=20 --no-check-certificate -O"}"
 			ssl_lib="built-in"
 		;;
-		wget-nossl)
-			ban_fetchparm="${ban_fetchparm:-"--no-cache --no-cookies --max-redirect=0 --timeout=20 -O"}"
-		;;
-		busybox)
-			ban_fetchparm="${ban_fetchparm:-"-O"}"
-		;;
-		curl)
+		"curl")
 			ban_fetchparm="${ban_fetchparm:-"--connect-timeout 20 --insecure -o"}"
 			ssl_lib="built-in"
 		;;
-		aria2c)
+		"aria2c")
 			ban_fetchparm="${ban_fetchparm:-"--timeout=20 --allow-overwrite=true --auto-file-renaming=false --check-certificate=false -o"}"
 			ssl_lib="built-in"
 		;;
@@ -160,7 +152,7 @@ f_envcheck()
 
 	if [ ! -x "${ban_fetchutil}" ] || [ -z "${ban_fetchutil}" ] || [ -z "${ban_fetchparm}" ]
 	then
-		f_log "err" "download utility not found, please install 'uclient-fetch' with 'libustream-mbedtls' or the full 'wget' package"
+		f_log "err" "download utility not found, please install 'uclient-fetch' with the 'libustream-mbedtls' ssl library or the full 'wget' package"
 	fi
 
 	# get wan device and wan subnets
@@ -215,16 +207,19 @@ f_envcheck()
 #
 f_temp()
 {
-	if [ -z "${ban_tmpdir}" ]
+	if [ -d "/tmp" ] && [ -z "${ban_tmpdir}" ]
 	then
 		ban_tmpdir="$(mktemp -p /tmp -d)"
 		ban_tmpload="$(mktemp -p "${ban_tmpdir}" -tu)"
 		ban_tmpfile="$(mktemp -p "${ban_tmpdir}" -tu)"
+	elif [ ! -d "/tmp" ]
+	then
+		f_log "err" "the temp directory '/tmp' does not exist/is not mounted yet, please create the directory or raise the 'ban_triggerdelay' to defer the banIP start"
 	fi
 
 	if [ ! -s "${ban_pidfile}" ]
 	then
-		printf '%s' "${$}" > "${ban_pidfile}"
+		printf "%s" "${$}" > "${ban_pidfile}"
 	fi
 }
 
@@ -259,7 +254,7 @@ f_iptrule()
 	then
 		if [ -x "${ban_ipt6}" ]
 		then
-			rc="$("${ban_ipt6}" "${timeout}" -C ${rule} 2>/dev/null; printf '%u' ${?})"
+			rc="$("${ban_ipt6}" "${timeout}" -C ${rule} 2>/dev/null; printf "%u" ${?})"
 
 			if { [ "${rc}" -ne 0 ] && { [ "${action}" = "-A" ] || [ "${action}" = "-I" ]; } } || \
 				{ [ "${rc}" -eq 0 ] && [ "${action}" = "-D" ]; }
@@ -270,7 +265,7 @@ f_iptrule()
 	else
 		if [ -x "${ban_ipt}" ]
 		then
-			rc="$("${ban_ipt}" "${timeout}" -C ${rule} 2>/dev/null; printf '%u' ${?})"
+			rc="$("${ban_ipt}" "${timeout}" -C ${rule} 2>/dev/null; printf "%u" ${?})"
 
 			if { [ "${rc}" -ne 0 ] && { [ "${action}" = "-A" ] || [ "${action}" = "-I" ]; } } || \
 				{ [ "${rc}" -eq 0 ] && [ "${action}" = "-D" ]; }
@@ -339,7 +334,7 @@ f_iptadd()
 #
 f_ipset()
 {
-	local rc cnt cnt_ip cnt_cidr size source action ruleset ruleset_6 rule timeout="-w 5" mode="${1}"
+	local out_rc cnt cnt_ip cnt_cidr size source action ruleset ruleset_6 rule timeout="-w 5" mode="${1}" in_rc="${src_rc:-0}"
 
 	if [ "${src_name%_6*}" = "whitelist" ]
 	then
@@ -349,32 +344,33 @@ f_ipset()
 	fi
 
 	case "${mode}" in
-		backup)
-			ban_rc=4
-			if [ -d "${ban_backupdir}" ]
-			then
-				gzip -cf "${tmp_load}" 2>/dev/null > "${ban_backupdir}/banIP.${src_name}.gz"
-				ban_rc=${?}
-			fi
-			f_log "debug" "f_ipset ::: name: ${src_name:-"-"}, mode: ${mode:-"-"}, rc: ${ban_rc}"
+		"backup")
+			gzip -cf "${tmp_load}" 2>/dev/null > "${ban_backupdir}/banIP.${src_name}.gz"
+			out_rc="${?:-"${in_rc}"}"
+			f_log "debug" "f_ipset ::: name: ${src_name:-"-"}, mode: ${mode:-"-"}, out_rc: ${out_rc}"
+			return "${out_rc}"
 		;;
-		restore)
-			ban_rc=4
-			if [ -d "${ban_backupdir}" ] && [ -f "${ban_backupdir}/banIP.${src_name}.gz" ]
+		"restore")
+			if [ -f "${ban_backupdir}/banIP.${src_name}.gz" ]
 			then
-				gunzip -cf "${ban_backupdir}/banIP.${src_name}.gz" 2>/dev/null > "${tmp_load}"
-				ban_rc=${?}
+				zcat "${ban_backupdir}/banIP.${src_name}.gz" 2>/dev/null > "${tmp_load}"
+				out_rc="${?}"
 			fi
-			f_log "debug" "f_ipset ::: name: ${src_name:-"-"}, mode: ${mode:-"-"}, rc: ${ban_rc}"
+			out_rc="${out_rc:-"${in_rc}"}"
+			f_log "debug" "f_ipset ::: name: ${src_name:-"-"}, mode: ${mode:-"-"}, out_rc: ${out_rc}"
+			return "${out_rc}"
 		;;
-		remove)
-			if [ -d "${ban_backupdir}" ] && [ -f "${ban_backupdir}/banIP.${src_name}.gz" ]
+		"remove")
+			if [ -f "${ban_backupdir}/banIP.${src_name}.gz" ]
 			then
 				rm -f "${ban_backupdir}/banIP.${src_name}.gz"
+				out_rc="${?}"
 			fi
-			f_log "debug" "f_ipset ::: name: ${src_name:-"-"}, mode: ${mode:-"-"}"
+			out_rc="${out_rc:-"${in_rc}"}"
+			f_log "debug" "f_ipset ::: name: ${src_name:-"-"}, mode: ${mode:-"-"}, out_rc: ${out_rc}"
+			return "${out_rc}"
 		;;
-		initial)
+		"initial")
 			if [ -x "${ban_ipt}" ] && [ -z "$("${ban_ipt}" "${timeout}" -nL "${ban_chain}" 2>/dev/null)" ]
 			then
 				"${ban_ipt}" "${timeout}" -N "${ban_chain}"
@@ -387,7 +383,6 @@ f_ipset()
 					f_iptrule "-D" "${rule} -j ${ban_chain}"
 				done
 			fi
-
 			if [ -x "${ban_ipt6}" ] && [ -z "$("${ban_ipt6}" "${timeout}" -nL "${ban_chain}" 2>/dev/null)" ]
 			then
 				"${ban_ipt6}" "${timeout}" -N "${ban_chain}"
@@ -402,48 +397,51 @@ f_ipset()
 			fi
 			f_log "debug" "f_ipset ::: name: -, mode: ${mode:-"-"}, chain: ${ban_chain:-"-"}, ruleset: ${ruleset:-"-"}, ruleset_6: ${ruleset_6:-"-"}"
 		;;
-		create)
-			cnt="$(wc -l 2>/dev/null < "${tmp_file}")"
-			cnt_cidr="$(grep -cF "/" "${tmp_file}")"
-			cnt_ip="$((cnt-cnt_cidr))"
-			size="$((cnt/4))"
-
-			if [ "${cnt}" -gt 0 ]
+		"create")
+			if [ -x "${ban_ipset}" ] && [ -z "$("${ban_ipset}" -q -n list "${src_name}")" ]
+			then
+				"${ban_ipset}" -q create "${src_name}" hash:"${src_settype}" hashsize "${size}" maxelem 262144 family "${src_setipv}" counters
+			else
+				"${ban_ipset}" -q flush "${src_name}"
+			fi
+			if [ -s "${tmp_file}" ]
 			then
-				if [ -x "${ban_ipset}" ] && [ -z "$("${ban_ipset}" -q -n list "${src_name}")" ]
-				then
-					"${ban_ipset}" -q create "${src_name}" hash:"${src_settype}" hashsize "${size}" maxelem 262144 family "${src_setipv}" counters
-				else
-					"${ban_ipset}" -q flush "${src_name}"
-				fi
 				"${ban_ipset}" -! restore < "${tmp_file}"
-				printf "%s\n" "1" > "${tmp_set}"
-				printf "%s\n" "${cnt}" > "${tmp_cnt}"
+				out_rc="${?}"
+				"${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))"
+				size="$((cnt/4))"
+				printf "%s\\n" "1" > "${tmp_set}"
+				printf "%s\\n" "${cnt}" > "${tmp_cnt}"
+				f_iptadd
 			fi
-			f_iptadd
 			end_ts="$(date +%s)"
-			f_log "debug" "f_ipset ::: name: ${src_name:-"-"}, mode: ${mode:-"-"}, settype: ${src_settype:-"-"}, setipv: ${src_setipv:-"-"}, ruletype: ${src_ruletype:-"-"}, count(sum/ip/cidr): ${cnt:-0}/${cnt_ip:-0}/${cnt_cidr:-0}, time: $((end_ts-start_ts))"
+			out_rc="${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): ${cnt:-0}/${cnt_ip:-0}/${cnt_cidr:-0}, time: $((end_ts-start_ts)), out_rc: ${out_rc}"
 		;;
-		refresh)
-			ban_rc=4
+		"refresh")
 			if [ -x "${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}" ]
 				then
-					ban_rc=0
 					cnt="$(($(wc -l 2>/dev/null < "${tmp_file}")-1))"
 					cnt_cidr="$(grep -cF "/" "${tmp_file}")"
 					cnt_ip="$((cnt-cnt_cidr))"
-					printf "%s\n" "1" > "${tmp_set}"
-					printf "%s\n" "${cnt}" > "${tmp_cnt}"
+					printf "%s\\n" "1" > "${tmp_set}"
+					printf "%s\\n" "${cnt}" > "${tmp_cnt}"
 				fi
 				f_iptadd
 			fi
 			end_ts="$(date +%s)"
-			f_log "debug" "f_ipset ::: name: ${src_name:-"-"}, mode: ${mode:-"-"}, count: ${cnt:-0}/${cnt_ip:-0}/${cnt_cidr:-0}, time: $((end_ts-start_ts)), rc: ${ban_rc}"
+			out_rc="${out_rc:-"${in_rc}"}"
+			f_log "debug" "f_ipset ::: name: ${src_name:-"-"}, mode: ${mode:-"-"}, count: ${cnt:-0}/${cnt_ip:-0}/${cnt_cidr:-0}, time: $((end_ts-start_ts)), out_rc: ${out_rc}"
+			return "${out_rc}"
 		;;
-		flush)
+		"flush")
 			f_iptadd "remove"
 
 			if [ -x "${ban_ipset}" ] && [ -n "$("${ban_ipset}" -q -n list "${src_name}")" ]
@@ -453,7 +451,7 @@ f_ipset()
 			fi
 			f_log "debug" "f_ipset ::: name: ${src_name:-"-"}, mode: ${mode:-"-"}"
 		;;
-		destroy)
+		"destroy")
 			if [ -x "${ban_ipt}" ] && [ -x "${ban_ipt_save}" ] && [ -x "${ban_ipt_restore}" ] && \
 				[ -n "$("${ban_ipt}" "${timeout}" -nL "${ban_chain}" 2>/dev/null)" ]
 			then
@@ -461,7 +459,6 @@ f_ipset()
 				"${ban_ipt}" "${timeout}" -F "${ban_chain}"
 				"${ban_ipt}" "${timeout}" -X "${ban_chain}"
 			fi
-
 			if [ -x "${ban_ipt6}" ] && [ -x "${ban_ipt6_save}" ] && [ -x "${ban_ipt6_restore}" ] && \
 				[ -n "$("${ban_ipt6}" "${timeout}" -nL "${ban_chain}" 2>/dev/null)" ]
 			then
@@ -469,7 +466,6 @@ f_ipset()
 				"${ban_ipt6}" "${timeout}" -F "${ban_chain}"
 				"${ban_ipt6}" "${timeout}" -X "${ban_chain}"
 			fi
-
 			for source in ${ban_sources}
 			do
 				if [ -x "${ban_ipset}" ] && [ -n "$("${ban_ipset}" -q -n list "${source}")" ]
@@ -508,13 +504,13 @@ f_log()
 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
+	local src_name src_on src_url src_rset src_setipv src_settype src_ruletype src_cat src_log src_addon src_rc
 	local wan_input wan_forward lan_input lan_forward target_src target_dst log_content
 
-	log_content="$(logread -e "dropbear")"
+	log_content="$(logread -e "${ban_sshdaemon}")"
 	mem_total="$(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_fetchinfo:-"-"}, fetch_parm: ${ban_fetchparm:-"-"}, interface(s): ${ban_iface:-"-"}, device(s): ${ban_dev:-"-"}, all_devices: ${ban_dev_all:-"-"}, backup: ${ban_backup:-"-"}, backup_boot: ${ban_backupboot:-"-"}, backup_dir: ${ban_backupdir:-"-"}, mem_total: ${mem_total:-0}, mem_free: ${mem_free:-0}, max_queue: ${ban_maxqueue}"
+	f_log "debug" "f_main  ::: fetch_util: ${ban_fetchinfo:-"-"}, 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}"
 
 	f_ipset initial
 
@@ -527,9 +523,9 @@ f_main()
 		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_${src_name%_6*}\}\")"
+				src_on="$(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="${ban_wan_forward_chain_6:-"forwarding_wan_rule"}"
@@ -541,9 +537,9 @@ f_main()
 		else
 			if [ -x "${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_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"}"
@@ -553,10 +549,11 @@ f_main()
 				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_${src_name%_6*}\}\")"
+		src_settype="$(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_tmpload}.${src_name}"
 		tmp_file="${ban_tmpfile}.${src_name}"
 		tmp_raw="${tmp_load}.raw"
@@ -573,11 +570,11 @@ f_main()
 			f_ipset flush
 			f_ipset remove
 			continue
-		elif [ "${ban_action}" = "refresh" ]
+		elif [ "${ban_action}" = "refresh" ] && [ ! -f "${src_url}" ]
 		then
 			start_ts="$(date +%s)"
 			f_ipset refresh
-			if [ ${ban_rc} -eq 0 ]
+			if [ "${?}" -eq 0 ]
 			then
 				continue
 			fi
@@ -587,48 +584,60 @@ f_main()
 		#
 		(
 			start_ts="$(date +%s)"
-			if [ ! -f "${src_url}" ] && [ ${ban_backup} -eq 1 ] && [ ${ban_backupboot} -eq 1 ] && [ "${ban_action}" = "start" ]
+			if [ ! -f "${src_url}" ] && [ "${ban_action}" = "start" ]
 			then
 				f_ipset restore
 			fi
-
-			if [ ${ban_rc} -ne 0 ] || [ ! -s "${tmp_load}" ]
+			src_rc="${?}"
+			if [ "${src_rc}" -ne 0 ] || [ ! -s "${tmp_load}" ]
 			then
 				if [ -f "${src_url}" ]
 				then
 					src_log="$(cat "${src_url}" 2>/dev/null > "${tmp_load}")"
-					ban_rc=${?}
+					src_rc="${?}"
 					case "${src_name}" in
-						whitelist)
+						"whitelist")
 							src_addon="${ban_subnets}"
 						;;
-						whitelist_6)
+						"whitelist_6")
 							src_addon="${ban_subnets6}"
 						;;
-						blacklist)
-							pid_list="$(printf "%s\n" "${log_content}" | 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} $(printf "%s\n" "${log_content}" | grep -F "${pid}" | awk 'match($0,/([0-9]{1,3}\.){3}[0-9]{1,3}/){ORS=" ";print substr($0,RSTART,RLENGTH)}')"
-							done
+						"blacklist")
+							if [ "${ban_sshdaemon}" = "dropbear" ]
+							then
+								pid_list="$(printf "%s\\n" "${log_content}" | 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} $(printf "%s\\n" "${log_content}" | grep -F "${pid}" | awk 'match($0,/([0-9]{1,3}\.){3}[0-9]{1,3}/){ORS=" ";print substr($0,RSTART,RLENGTH)}')"
+								done
+							elif [ "${ban_sshdaemon}" = "sshd" ]
+							then
+								src_addon="$(printf "%s\\n" "${log_content}" | grep -E "[0-9]+ \[preauth\]$" | awk 'match($0,/([0-9]{1,3}\.){3}[0-9]{1,3}/){ORS=" ";print substr($0,RSTART,RLENGTH)}')"
+							fi
 						;;
-						blacklist_6)
-							pid_list="$(printf "%s\n" "${log_content}" | 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} $(printf "%s\n" "${log_content}" | grep -F "${pid}" | awk 'match($0,/([0-9a-fA-F]{0,4}:){1,7}[0-9a-fA-F]{0,4}/){ORS=" ";print substr($0,RSTART,RLENGTH)}')"
-							done
+						"blacklist_6")
+							if [ "${ban_sshdaemon}" = "dropbear" ]
+							then
+								pid_list="$(printf "%s\\n" "${log_content}" | 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} $(printf "%s\\n" "${log_content}" | grep -F "${pid}" | awk 'match($0,/([0-9a-fA-F]{0,4}:){1,7}[0-9a-fA-F]{0,4}/){ORS=" ";print substr($0,RSTART,RLENGTH)}')"
+								done
+							elif [ "${ban_sshdaemon}" = "sshd" ]
+							then
+								src_addon="$(printf "%s\\n" "${log_content}" | grep -E "[0-9]+ \[preauth\]$" | awk 'match($0,/([0-9a-fA-F]{0,4}:){1,7}[0-9a-fA-F]{0,4}/){ORS=" ";print substr($0,RSTART,RLENGTH)}')"
+							fi
 						;;
 					esac
 					for ip in ${src_addon}
 					do
 						if [ -z "$(grep -F "${ip}" "${src_url}")" ]
 						then
-							printf '%s\n' "${ip}" >> "${tmp_load}"
+							printf "%s\\n" "${ip}" >> "${tmp_load}"
 							if { [ "${src_name//_*/}" = "blacklist" ] && [ "${ban_autoblacklist}" -eq 1 ]; } || \
 								{ [ "${src_name//_*/}" = "whitelist" ] && [ "${ban_autowhitelist}" -eq 1 ]; }
 							then
-								printf '%s\n' "${ip}" >> "${src_url}"
+								printf "%s\\n" "${ip}" >> "${src_url}"
 							fi
 						fi
 					done
@@ -639,18 +648,18 @@ f_main()
 						for as in ${src_cat}
 						do
 							src_log="$("${ban_fetchutil}" ${ban_fetchparm} "${tmp_raw}" "${src_url}AS${as}" 2>&1)"
-							ban_rc=${?}
-							if [ ${ban_rc} -eq 0 ]
+							src_rc="${?}"
+							if [ "${src_rc}" -eq 0 ]
 							then
 								jsonfilter -i "${tmp_raw}" -e '@.data.prefixes.*.prefix' 2>/dev/null >> "${tmp_load}"
 							else
 								break
 							fi
 						done
-						if [ ${ban_rc} -eq 0 ] && [ ${ban_backup} -eq 1 ]
+						if [ "${src_rc}" -eq 0 ]
 						then
 							f_ipset backup
-						elif [ ${ban_backup} -eq 1 ]
+						elif [ "${ban_action}" != "start" ]
 						then
 							f_ipset restore
 						fi
@@ -658,8 +667,8 @@ f_main()
 						for co in ${src_cat}
 						do
 							src_log="$("${ban_fetchutil}" ${ban_fetchparm} "${tmp_raw}" "${src_url}${co}&v4_format=prefix" 2>&1)"
-							ban_rc=${?}
-							if [ ${ban_rc} -eq 0 ]
+							src_rc="${?}"
+							if [ "${src_rc}" -eq 0 ]
 							then
 								if [ "${src_name##*_}" = "6" ]
 								then
@@ -671,53 +680,62 @@ f_main()
 								break
 							fi
 						done
-						if [ ${ban_rc} -eq 0 ] && [ ${ban_backup} -eq 1 ]
+						if [ "${src_rc}" -eq 0 ]
 						then
 							f_ipset backup
-						elif [ ${ban_backup} -eq 1 ]
+						elif [ "${ban_action}" != "start" ]
 						then
 							f_ipset restore
 						fi
 					fi
 				else
 					src_log="$("${ban_fetchutil}" ${ban_fetchparm} "${tmp_raw}" "${src_url}" 2>&1)"
-					ban_rc=${?}
-					if [ ${ban_rc} -eq 0 ]
+					src_rc="${?}"
+					if [ "${src_rc}" -eq 0 ]
 					then
 						zcat "${tmp_raw}" 2>/dev/null > "${tmp_load}"
-						ban_rc=${?}
-						if [ ${ban_rc} -ne 0 ]
+						src_rc="${?}"
+						if [ "${src_rc}" -ne 0 ]
 						then
 							mv -f "${tmp_raw}" "${tmp_load}"
-							ban_rc=${?}
+							src_rc="${?}"
 						fi
-						if [ ${ban_rc} -eq 0 ] && [ ${ban_backup} -eq 1 ]
+						if [ "${src_rc}" -eq 0 ]
 						then
 							f_ipset backup
+							src_rc="${?}"
 						fi
-					elif [ ${ban_backup} -eq 1 ]
+					elif [ "${ban_action}" != "start" ]
 					then
 						f_ipset restore
+						src_rc="${?}"
 					fi
 				fi
 			fi
 
-			if [ ${ban_rc} -eq 0 ]
+			if [ "${src_rc}" -eq 0 ]
 			then
 				awk "${src_rset}" "${tmp_load}" 2>/dev/null > "${tmp_file}"
-				ban_rc=${?}
-				if [ ${ban_rc} -eq 0 ]
+				src_rc="${?}"
+				if [ "${src_rc}" -eq 0 ]
 				then
 					f_ipset create
-				else
+					src_rc="${?}"
+				elif [ "${ban_action}" != "refresh" ]
+				then
 					f_ipset refresh
+					src_rc="${?}"
 				fi
 			else
-				src_log="$(printf '%s' "${src_log}" | awk '{ORS=" ";print $0}')"
-				f_log "debug" "f_main  ::: name: ${src_name}, url: ${src_url}, rc: ${ban_rc}, log: ${src_log:-"-"}"
-				f_ipset refresh
+				src_log="$(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 [ "${hold}" -eq 0 ]
 		then
@@ -725,40 +743,30 @@ f_main()
 		fi
 		cnt="$((cnt+1))"
 	done
-
 	wait
-	if [ "${ban_rc}" -eq 0 ]
-	then
-		for cnt in $(cat "${ban_tmpfile}".*.setcnt 2>/dev/null)
-		do
-			ban_setcnt="$((ban_setcnt+cnt))"
-		done
-		for cnt in $(cat "${ban_tmpfile}".*.cnt 2>/dev/null)
-		do
-			ban_cnt="$((ban_cnt+cnt))"
-		done
-		f_log "info" "${ban_setcnt} IPSets with overall ${ban_cnt} IPs/Prefixes loaded successfully (${ban_sysver})"
-	fi
+
+	for cnt in $(cat "${ban_tmpfile}".*.setcnt 2>/dev/null)
+	do
+		ban_setcnt="$((ban_setcnt+cnt))"
+	done
+	for cnt in $(cat "${ban_tmpfile}".*.cnt 2>/dev/null)
+	do
+		ban_cnt="$((ban_cnt+cnt))"
+	done
+	f_log "info" "${ban_setcnt} IPSets with overall ${ban_cnt} IPs/Prefixes loaded successfully (${ban_sysver})"
 	f_jsnup
 	f_rmtemp
-	exit ${ban_rc}
 }
 
 # update runtime information
 #
 f_jsnup()
 {
-	local rundate mode status="${1:-"enabled"}"
+	local rundate status="${1:-"enabled"}"
 
 	rundate="$(/bin/date "+%d.%m.%Y %H:%M:%S")"
-	mode="normal mode"
 	ban_cntinfo="${ban_setcnt} IPSets with overall ${ban_cnt} IPs/Prefixes"
 
-	if [ "${ban_backupboot}" -eq 1 ]
-	then
-		mode="backup mode"
-	fi
-
 	> "${ban_rtfile}"
 	json_load_file "${ban_rtfile}" >/dev/null 2>&1
 	json_init
@@ -766,12 +774,12 @@ f_jsnup()
 	json_add_string "status" "${status}"
 	json_add_string "version" "${ban_ver}"
 	json_add_string "fetch_info" "${ban_fetchinfo:-"-"}"
-	json_add_string "ipset_info" "${ban_cntinfo:-"-"} (${mode})"
+	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}"
 }
 
@@ -790,13 +798,13 @@ fi
 #
 f_envload
 case "${ban_action}" in
-	stop)
+	"stop")
 		f_jsnup stopped
 		f_ipset destroy
 		f_rmbackup
 		f_rmtemp
 	;;
-	start|restart|reload|refresh)
+	"start"|"restart"|"reload"|"refresh")
 		f_envcheck
 		f_main
 	;;