net/banip/files/banip-functions.sh

   1 # banIP shared function library/include
   2 # Copyright (c) 2018-2023 Dirk Brenken (dev@brenken.org)
   3 # This is free software, licensed under the GNU General Public License v3.
   4
   5 # (s)hellcheck exceptions
   6 # shellcheck disable=all
   7
   8 # set initial defaults
   9 #
  10 export LC_ALL=C
  11 export PATH="/usr/sbin:/usr/bin:/sbin:/bin"
  12
  13 ban_basedir="/tmp"
  14 ban_backupdir="/tmp/banIP-backup"
  15 ban_reportdir="/tmp/banIP-report"
  16 ban_feedfile="/etc/banip/banip.feeds"
  17 ban_allowlist="/etc/banip/banip.allowlist"
  18 ban_blocklist="/etc/banip/banip.blocklist"
  19 ban_mailtemplate="/etc/banip/banip.tpl"
  20 ban_pidfile="/var/run/banip.pid"
  21 ban_rtfile="/var/run/banip_runtime.json"
  22 ban_lock="/var/run/banip.lock"
  23 ban_fetchcmd=""
  24 ban_logreadcmd="$(command -v logread)"
  25 ban_logcmd="$(command -v logger)"
  26 ban_ubuscmd="$(command -v ubus)"
  27 ban_nftcmd="$(command -v nft)"
  28 ban_fw4cmd="$(command -v fw4)"
  29 ban_awkcmd="$(command -v awk)"
  30 ban_grepcmd="$(command -v grep)"
  31 ban_lookupcmd="$(command -v nslookup)"
  32 ban_mailcmd="$(command -v msmtp)"
  33 ban_mailsender="no-reply@banIP"
  34 ban_mailreceiver=""
  35 ban_mailtopic="banIP notification"
  36 ban_mailprofile="ban_notify"
  37 ban_mailnotifcation="0"
  38 ban_reportelements="1"
  39 ban_nftloglevel="warn"
  40 ban_nftpriority="-200"
  41 ban_nftpolicy="memory"
  42 ban_nftexpiry=""
  43 ban_loglimit="100"
  44 ban_logcount="1"
  45 ban_logterm=""
  46 ban_country=""
  47 ban_asn=""
  48 ban_loginput="1"
  49 ban_logforwardwan="1"
  50 ban_logforwardlan="0"
  51 ban_allowlistonly="0"
  52 ban_autoallowlist="1"
  53 ban_autoblocklist="1"
  54 ban_deduplicate="1"
  55 ban_splitsize="0"
  56 ban_autodetect="1"
  57 ban_feed=""
  58 ban_blockinput=""
  59 ban_blockforwardwan=""
  60 ban_blockforwardlan=""
  61 ban_protov4="0"
  62 ban_protov6="0"
  63 ban_ifv4=""
  64 ban_ifv6=""
  65 ban_dev=""
  66 ban_sub=""
  67 ban_fetchinsecure=""
  68 ban_cores=""
  69 ban_memory=""
  70 ban_trigger=""
  71 ban_triggerdelay="10"
  72 ban_resolver=""
  73 ban_enabled="0"
  74 ban_debug="0"
  75
  76 # gather system information
  77 #
  78 f_system() {
  79         local cpu core
  80
  81         ban_memory="$("${ban_awkcmd}" '/^MemAvailable/{printf "%s",int($2/1000)}' "/proc/meminfo" 2>/dev/null)"
  82         ban_ver="$(${ban_ubuscmd} -S call rpc-sys packagelist 2>/dev/null | jsonfilter -ql1 -e '@.packages.banip')"
  83         ban_sysver="$(${ban_ubuscmd} -S call system board 2>/dev/null | jsonfilter -ql1 -e '@.model' -e '@.release.description' |
  84                 "${ban_awkcmd}" 'BEGIN{RS="";FS="\n"}{printf "%s, %s",$1,$2}')"
  85         if [ -z "${ban_cores}" ]; then
  86                 cpu="$("${ban_grepcmd}" -c '^processor' /proc/cpuinfo 2>/dev/null)"
  87                 core="$("${ban_grepcmd}" -cm1 '^core id' /proc/cpuinfo 2>/dev/null)"
  88                 [ "${cpu}" = "0" ] && cpu="1"
  89                 [ "${core}" = "0" ] && core="1"
  90                 ban_cores="$((cpu * core))"
  91         fi
  92
  93         f_log "debug" "f_system  ::: system: ${ban_sysver:-"n/a"}, version: ${ban_ver:-"n/a"}, memory: ${ban_memory:-"0"}, cpu_cores: ${ban_cores}"
  94 }
  95
  96 # create directories
  97 #
  98 f_mkdir() {
  99         local dir="${1}"
 100
 101         if [ ! -d "${dir}" ]; then
 102                 rm -f "${dir}"
 103                 mkdir -p "${dir}"
 104                 f_log "debug" "f_mkdir   ::: created directory: ${dir}"
 105         fi
 106 }
 107
 108 # create files
 109 #
 110 f_mkfile() {
 111         local file="${1}"
 112
 113         if [ ! -f "${file}" ]; then
 114                 : >"${file}"
 115                 f_log "debug" "f_mkfile  ::: created file: ${file}"
 116         fi
 117 }
 118
 119 # create temporary files and directories
 120 #
 121 f_tmp() {
 122         f_mkdir "${ban_basedir}"
 123         ban_tmpdir="$(mktemp -p "${ban_basedir}" -d)"
 124         ban_tmpfile="$(mktemp -p "${ban_tmpdir}" -tu)"
 125
 126         f_log "debug" "f_tmp     ::: base_dir: ${ban_basedir:-"-"}, tmp_dir: ${ban_tmpdir:-"-"}"
 127 }
 128
 129 # remove directories
 130 #
 131 f_rmdir() {
 132         local dir="${1}"
 133
 134         if [ -d "${dir}" ]; then
 135                 rm -rf "${dir}"
 136                 f_log "debug" "f_rmdir   ::: deleted directory: ${dir}"
 137         fi
 138 }
 139
 140 # convert chars
 141 #
 142 f_char() {
 143         local char="${1}"
 144
 145         [ "${char}" = "1" ] && printf "%s" "✔" || printf "%s" "✘"
 146 }
 147
 148 # trim strings
 149 #
 150 f_trim() {
 151         local string="${1}"
 152
 153         string="${string#"${string%%[![:space:]]*}"}"
 154         string="${string%"${string##*[![:space:]]}"}"
 155         printf "%s" "${string}"
 156 }
 157
 158 # write log messages
 159 #
 160 f_log() {
 161         local class="${1}" log_msg="${2}"
 162
 163         if [ -n "${log_msg}" ] && { [ "${class}" != "debug" ] || [ "${ban_debug}" = "1" ]; }; then
 164                 if [ -x "${ban_logcmd}" ]; then
 165                         "${ban_logcmd}" -p "${class}" -t "banIP-${ban_ver}[${$}]" "${log_msg}"
 166                 else
 167                         printf "%s %s %s\n" "${class}" "banIP-${ban_ver}[${$}]" "${log_msg}"
 168                 fi
 169         fi
 170         if [ "${class}" = "err" ]; then
 171                 "${ban_nftcmd}" delete table inet banIP >/dev/null 2>&1
 172                 if [ "${ban_enabled}" = "1" ]; then
 173                         f_genstatus "error"
 174                         [ "${ban_mailnotification}" = "1" ] && [ -n "${ban_mailreceiver}" ] && [ -x "${ban_mailcmd}" ] && f_mail
 175                 else
 176                         f_genstatus "disabled"
 177                 fi
 178                 f_rmdir "${ban_tmpdir}"
 179                 f_rmpid
 180                 rm -rf "${ban_lock}"
 181                 exit 1
 182         fi
 183 }
 184
 185 # load config
 186 #
 187 f_conf() {
 188         unset ban_dev ban_ifv4 ban_ifv6 ban_feed ban_blockinput ban_blockforwardwan ban_blockforwardlan ban_logterm ban_country ban_asn
 189         config_cb() {
 190                 option_cb() {
 191                         local option="${1}"
 192                         local value="${2}"
 193                         eval "${option}=\"${value}\""
 194                 }
 195                 list_cb() {
 196                         local option="${1}"
 197                         local value="${2}"
 198                         case "${option}" in
 199                                 "ban_dev")
 200                                         eval "${option}=\"$(printf "%s" "${ban_dev}")${value} \""
 201                                         ;;
 202                                 "ban_ifv4")
 203                                         eval "${option}=\"$(printf "%s" "${ban_ifv4}")${value} \""
 204                                         ;;
 205                                 "ban_ifv6")
 206                                         eval "${option}=\"$(printf "%s" "${ban_ifv6}")${value} \""
 207                                         ;;
 208                                 "ban_feed")
 209                                         eval "${option}=\"$(printf "%s" "${ban_feed}")${value} \""
 210                                         ;;
 211                                 "ban_blockinput")
 212                                         eval "${option}=\"$(printf "%s" "${ban_blockinput}")${value} \""
 213                                         ;;
 214                                 "ban_blockforwardwan")
 215                                         eval "${option}=\"$(printf "%s" "${ban_blockforwardwan}")${value} \""
 216                                         ;;
 217                                 "ban_blockforwardlan")
 218                                         eval "${option}=\"$(printf "%s" "${ban_blockforwardlan}")${value} \""
 219                                         ;;
 220                                 "ban_logterm")
 221                                         eval "${option}=\"$(printf "%s" "${ban_logterm}")${value}\\|\""
 222                                         ;;
 223                                 "ban_country")
 224                                         eval "${option}=\"$(printf "%s" "${ban_country}")${value} \""
 225                                         ;;
 226                                 "ban_asn")
 227                                         eval "${option}=\"$(printf "%s" "${ban_asn}")${value} \""
 228                                         ;;
 229                         esac
 230                 }
 231         }
 232         config_load banip
 233
 234         [ "${ban_action}" = "boot" ] && [ -z "${ban_trigger}" ] && sleep ${ban_triggerdelay}
 235 }
 236
 237 # prepare fetch utility
 238 #
 239 f_fetch() {
 240         local ut utils packages insecure
 241
 242         if [ -z "${ban_fetchcmd}" ] || [ ! -x "${ban_fetchcmd}" ]; then
 243                 packages="$(${ban_ubuscmd} -S call rpc-sys packagelist 2>/dev/null)"
 244                 [ -z "${packages}" ] && f_log "err" "local opkg package repository is not available, please set the download utility 'ban_fetchcmd' manually"
 245                 utils="aria2c curl wget uclient-fetch"
 246                 for ut in ${utils}; do
 247                         if { [ "${ut}" = "uclient-fetch" ] && printf "%s" "${packages}" | "${ban_grepcmd}" -q '"libustream-'; } ||
 248                                 { [ "${ut}" = "wget" ] && printf "%s" "${packages}" | "${ban_grepcmd}" -q '"wget-ssl'; } ||
 249                                 [ "${ut}" = "curl" ] || [ "${ut}" = "aria2c" ]; then
 250                                 ban_fetchcmd="$(command -v "${ut}")"
 251                                 if [ -x "${ban_fetchcmd}" ]; then
 252                                         uci_set banip global ban_fetchcmd "${ban_fetchcmd##*/}"
 253                                         uci_commit "banip"
 254                                         break
 255                                 fi
 256                         fi
 257                 done
 258         fi
 259         [ ! -x "${ban_fetchcmd}" ] && f_log "err" "download utility with SSL support not found"
 260         case "${ban_fetchcmd##*/}" in
 261                 "aria2c")
 262                         [ "${ban_fetchinsecure}" = "1" ] && insecure="--check-certificate=false"
 263                         ban_fetchparm="${ban_fetchparm:-"${insecure} --timeout=20 --allow-overwrite=true --auto-file-renaming=false --log-level=warn --dir=/ -o"}"
 264                         ;;
 265                 "curl")
 266                         [ "${ban_fetchinsecure}" = "1" ] && insecure="--insecure"
 267                         ban_fetchparm="${ban_fetchparm:-"${insecure} --connect-timeout 20 --fail --silent --show-error --location -o"}"
 268                         ;;
 269                 "uclient-fetch")
 270                         [ "${ban_fetchinsecure}" = "1" ] && insecure="--no-check-certificate"
 271                         ban_fetchparm="${ban_fetchparm:-"${insecure} --timeout=20 -O"}"
 272                         ;;
 273                 "wget")
 274                         [ "${ban_fetchinsecure}" = "1" ] && insecure="--no-check-certificate"
 275                         ban_fetchparm="${ban_fetchparm:-"${insecure} --no-cache --no-cookies --max-redirect=0 --timeout=20 -O"}"
 276                         ;;
 277         esac
 278
 279         f_log "debug" "f_fetch   ::: fetch_cmd: ${ban_fetchcmd:-"-"}, fetch_parm: ${ban_fetchparm:-"-"}"
 280 }
 281
 282 # remove logservice
 283 #
 284 f_rmpid() {
 285         local ppid pid pids
 286
 287         ppid="$(cat "${ban_pidfile}" 2>/dev/null)"
 288         [ -n "${ppid}" ] && pids="$(pgrep -P "${ppid}" 2>/dev/null)" || return 0
 289         for pid in ${pids}; do
 290                 kill -INT "${pid}" >/dev/null 2>&1
 291         done
 292         : >"${ban_pidfile}"
 293 }
 294
 295 # get nft/monitor actuals
 296 #
 297 f_actual() {
 298         local nft monitor
 299
 300         if "${ban_nftcmd}" -t list set inet banIP allowlistvMAC >/dev/null 2>&1; then
 301                 nft="$(f_char "1")"
 302         else
 303                 nft="$(f_char "0")"
 304         fi
 305         if pgrep -f "logread" -P "$(cat "${ban_pidfile}" 2>/dev/null)" >/dev/null 2>&1; then
 306                 monitor="$(f_char "1")"
 307         else
 308                 monitor="$(f_char "0")"
 309         fi
 310         printf "%s" "nft: ${nft}, monitor: ${monitor}"
 311 }
 312
 313 # get wan interfaces
 314 #
 315 f_getif() {
 316         local iface update="0"
 317
 318         if [ "${ban_autodetect}" = "1" ]; then
 319                 if [ -z "${ban_ifv4}" ]; then
 320                         network_flush_cache
 321                         network_find_wan iface
 322                         if [ -n "${iface}" ] && "${ban_ubuscmd}" -t 10 wait_for network.interface."${iface}" >/dev/null 2>&1; then
 323                                 ban_protov4="1"
 324                                 ban_ifv4="${iface}"
 325                                 uci_set banip global ban_protov4 "1"
 326                                 uci_add_list banip global ban_ifv4 "${iface}"
 327                                 f_log "info" "added IPv4 interface '${iface}' to config"
 328                         fi
 329                 fi
 330                 if [ -z "${ban_ifv6}" ]; then
 331                         network_flush_cache
 332                         network_find_wan6 iface
 333                         if [ -n "${iface}" ] && "${ban_ubuscmd}" -t 10 wait_for network.interface."${iface}" >/dev/null 2>&1; then
 334                                 ban_protov6="1"
 335                                 ban_ifv6="${iface}"
 336                                 uci_set banip global ban_protov6 "1"
 337                                 uci_add_list banip global ban_ifv6 "${iface}"
 338                                 f_log "info" "added IPv6 interface '${iface}' to config"
 339                         fi
 340                 fi
 341         fi
 342         if [ -n "$(uci -q changes "banip")" ]; then
 343                 update="1"
 344                 uci_commit "banip"
 345         else
 346                 ban_ifv4="${ban_ifv4%%?}"
 347                 ban_ifv6="${ban_ifv6%%?}"
 348                 for iface in ${ban_ifv4} ${ban_ifv6}; do
 349                         if ! "${ban_ubuscmd}" -t 10 wait_for network.interface."${iface}" >/dev/null 2>&1; then
 350                                 f_log "err" "wan interface '${iface}' is not available, please check your configuration"
 351                         fi
 352                 done
 353         fi
 354         [ -z "${ban_ifv4}" ] && [ -z "${ban_ifv6}" ] && f_log "err" "wan interfaces not found, please check your configuration"
 355
 356         f_log "debug" "f_getif   ::: auto/update: ${ban_autodetect}/${update}, interfaces (4/6): ${ban_ifv4}/${ban_ifv6}, protocols (4/6): ${ban_protov4}/${ban_protov6}"
 357 }
 358
 359 # get wan devices
 360 #
 361 f_getdev() {
 362         local dev iface update="0" cnt="0" cnt_max="30"
 363
 364         if [ "${ban_autodetect}" = "1" ]; then
 365                 while [ "${cnt}" -lt "${cnt_max}" ] && [ -z "${ban_dev}" ]; do
 366                         network_flush_cache
 367                         for iface in ${ban_ifv4} ${ban_ifv6}; do
 368                                 network_get_device dev "${iface}"
 369                                 if [ -n "${dev}" ]; then
 370                                         if printf "%s" "${dev}" | "${ban_grepcmd}" -qE "pppoe|6in4"; then
 371                                                 dev="${iface}"
 372                                         fi
 373                                         if ! printf " %s " "${ban_dev}" | "${ban_grepcmd}" -q " ${dev} "; then
 374                                                 ban_dev="${ban_dev}${dev} "
 375                                                 uci_add_list banip global ban_dev "${dev}"
 376                                                 f_log "info" "added device '${dev}' to config"
 377                                         fi
 378                                 fi
 379                         done
 380                         cnt="$((cnt + 1))"
 381                         sleep 1
 382                 done
 383         fi
 384         if [ -n "$(uci -q changes "banip")" ]; then
 385                 update="1"
 386                 uci_commit "banip"
 387         fi
 388         ban_dev="${ban_dev%%?}"
 389         [ -z "${ban_dev}" ] && f_log "err" "wan devices not found, please check your configuration"
 390
 391         f_log "debug" "f_getdev  ::: auto/update: ${ban_autodetect}/${update}, devices: ${ban_dev}, cnt: ${cnt}"
 392 }
 393
 394 # get local subnets
 395 #
 396 f_getsub() {
 397         local sub iface ip update="0"
 398
 399         if [ "${ban_autoallowlist}" = "1" ]; then
 400                 for iface in ${ban_ifv4} ${ban_ifv6}; do
 401                         network_flush_cache
 402                         network_get_subnet sub "${iface}"
 403                         if [ -n "${sub}" ] && ! printf " %s " "${ban_sub}" | "${ban_grepcmd}" -q " ${sub} "; then
 404                                 ban_sub="${ban_sub}${sub} "
 405                         fi
 406                         network_get_subnet6 sub "${iface}"
 407                         if [ -n "${sub}" ] && ! printf " %s " "${ban_sub}" | "${ban_grepcmd}" -q " ${sub} "; then
 408                                 ban_sub="${ban_sub}${sub} "
 409                         fi
 410                 done
 411                 for ip in ${ban_sub}; do
 412                         if ! "${ban_grepcmd}" -q "${ip}" "${ban_allowlist}"; then
 413                                 update="1"
 414                                 printf "%-42s%s\n" "${ip}" "# subnet added on $(date "+%Y-%m-%d %H:%M:%S")" >>"${ban_allowlist}"
 415                                 f_log "info" "added subnet '${ip}' to local allowlist"
 416                         fi
 417                 done
 418                 ban_sub="${ban_sub%%?}"
 419         fi
 420
 421         f_log "debug" "f_getsub  ::: auto/update: ${ban_autoallowlist}/${update}, subnet(s): ${ban_sub:-"-"}"
 422 }
 423
 424 # get set elements
 425 #
 426 f_getelements() {
 427         local file="${1}"
 428
 429         [ -s "${file}" ] && printf "%s" "elements={ $(cat "${file}") };"
 430 }
 431
 432 # build initial nft file with base table, chains and rules
 433 #
 434 f_nftinit() {
 435         local feed_log feed_rc file="${1}"
 436
 437         {
 438                 # nft header (tables and chains)
 439                 #
 440                 printf "%s\n\n" "#!/usr/sbin/nft -f"
 441                 if "${ban_nftcmd}" -t list set inet banIP allowlistvMAC >/dev/null 2>&1; then
 442                         printf "%s\n" "delete table inet banIP"
 443                 fi
 444                 printf "%s\n" "add table inet banIP"
 445                 printf "%s\n" "add chain inet banIP wan-input { type filter hook input priority ${ban_nftpriority}; policy accept; }"
 446                 printf "%s\n" "add chain inet banIP wan-forward { type filter hook forward priority ${ban_nftpriority}; policy accept; }"
 447                 printf "%s\n" "add chain inet banIP lan-forward { type filter hook forward priority ${ban_nftpriority}; policy accept; }"
 448
 449                 # default wan-input rules
 450                 #
 451                 printf "%s\n" "add rule inet banIP wan-input ct state established,related counter accept"
 452                 printf "%s\n" "add rule inet banIP wan-input iifname != { ${ban_dev// /, } } counter accept"
 453                 printf "%s\n" "add rule inet banIP wan-input meta nfproto ipv4 udp sport 67-68 udp dport 67-68 counter accept"
 454                 printf "%s\n" "add rule inet banIP wan-input meta nfproto ipv6 udp sport 547 udp dport 546 counter accept"
 455                 printf "%s\n" "add rule inet banIP wan-input meta nfproto ipv4 icmp type { echo-request } limit rate 1000/second counter accept"
 456                 printf "%s\n" "add rule inet banIP wan-input meta nfproto ipv6 icmpv6 type { echo-request } limit rate 1000/second counter accept"
 457                 printf "%s\n" "add rule inet banIP wan-input meta nfproto ipv6 icmpv6 type { nd-neighbor-advert, nd-neighbor-solicit, nd-router-advert} limit rate 1000/second ip6 hoplimit 1 counter accept"
 458                 printf "%s\n" "add rule inet banIP wan-input meta nfproto ipv6 icmpv6 type { nd-neighbor-advert, nd-neighbor-solicit, nd-router-advert} limit rate 1000/second ip6 hoplimit 255 counter accept"
 459
 460                 # default wan-forward rules
 461                 #
 462                 printf "%s\n" "add rule inet banIP wan-forward ct state established,related counter accept"
 463                 printf "%s\n" "add rule inet banIP wan-forward iifname != { ${ban_dev// /, } } counter accept"
 464
 465                 # default lan-forward rules
 466                 #
 467                 printf "%s\n" "add rule inet banIP lan-forward ct state established,related counter accept"
 468                 printf "%s\n" "add rule inet banIP lan-forward oifname != { ${ban_dev// /, } } counter accept"
 469         } >"${file}"
 470
 471         # load initial banIP table within nft (atomic load)
 472         #
 473         feed_log="$("${ban_nftcmd}" -f "${file}" 2>&1)"
 474         feed_rc="${?}"
 475
 476         f_log "debug" "f_nftinit ::: devices: ${ban_dev}, priority: ${ban_nftpriority}, policy: ${ban_nftpolicy}, loglevel: ${ban_nftloglevel}, rc: ${feed_rc:-"-"}, log: ${feed_log:-"-"}"
 477         return ${feed_rc}
 478 }
 479
 480 # handle downloads
 481 #
 482 f_down() {
 483         local log_input log_forwardwan log_forwardlan start_ts end_ts tmp_raw tmp_load tmp_file split_file ruleset_raw handle
 484         local cnt_set cnt_dl restore_rc feed_direction feed_rc feed_log feed="${1}" proto="${2}" feed_url="${3}" feed_rule="${4}" feed_flag="${5}"
 485
 486         start_ts="$(date +%s)"
 487         feed="${feed}v${proto}"
 488         tmp_load="${ban_tmpfile}.${feed}.load"
 489         tmp_raw="${ban_tmpfile}.${feed}.raw"
 490         tmp_split="${ban_tmpfile}.${feed}.split"
 491         tmp_file="${ban_tmpfile}.${feed}.file"
 492         tmp_flush="${ban_tmpfile}.${feed}.flush"
 493         tmp_nft="${ban_tmpfile}.${feed}.nft"
 494
 495         [ "${ban_loginput}" = "1" ] && log_input="log level ${ban_nftloglevel} prefix \"banIP/inp-wan/drp/${feed}: \""
 496         [ "${ban_logforwardwan}" = "1" ] && log_forwardwan="log level ${ban_nftloglevel} prefix \"banIP/fwd-wan/drp/${feed}: \""
 497         [ "${ban_logforwardlan}" = "1" ] && log_forwardlan="log level ${ban_nftloglevel} prefix \"banIP/fwd-lan/rej/${feed}: \""
 498
 499         # set source block direction
 500         #
 501         if printf "%s" "${ban_blockinput}" | "${ban_grepcmd}" -q "${feed%v*}"; then
 502                 feed_direction="input"
 503         fi
 504         if printf "%s" "${ban_blockforwardwan}" | "${ban_grepcmd}" -q "${feed%v*}"; then
 505                 feed_direction="${feed_direction} forwardwan"
 506         fi
 507         if printf "%s" "${ban_blockforwardlan}" | "${ban_grepcmd}" -q "${feed%v*}"; then
 508                 feed_direction="${feed_direction} forwardlan"
 509         fi
 510
 511         # chain/rule maintenance
 512         #
 513         if [ "${ban_action}" = "reload" ] && "${ban_nftcmd}" -t list set inet banIP "${feed}" >/dev/null 2>&1; then
 514                 ruleset_raw="$("${ban_nftcmd}" -tj list ruleset 2>/dev/null)"
 515                 {
 516                         printf "%s\n" "flush set inet banIP ${feed}"
 517                         handle="$(printf "%s\n" "${ruleset_raw}" | jsonfilter -l1 -qe "@.nftables[@.rule.table=\"banIP\"&&@.rule.chain=\"wan-input\"][@.expr[0].match.right=\"@${feed}\"].handle")"
 518                         [ -n "${handle}" ] && printf "%s\n" "delete rule inet banIP wan-input handle ${handle}"
 519                         handle="$(printf "%s\n" "${ruleset_raw}" | jsonfilter -l1 -qe "@.nftables[@.rule.table=\"banIP\"&&@.rule.chain=\"wan-forward\"][@.expr[0].match.right=\"@${feed}\"].handle")"
 520                         [ -n "${handle}" ] && printf "%s\n" "delete rule inet banIP wan-forward handle ${handle}"
 521                         handle="$(printf "%s\n" "${ruleset_raw}" | jsonfilter -l1 -qe "@.nftables[@.rule.table=\"banIP\"&&@.rule.chain=\"lan-forward\"][@.expr[0].match.right=\"@${feed}\"].handle")"
 522                         [ -n "${handle}" ] && printf "%s\n" "delete rule inet banIP lan-forward handle ${handle}"
 523                 } >"${tmp_flush}"
 524         fi
 525
 526         # restore local backups during init
 527         #
 528         if { [ "${ban_action}" != "reload" ] || [ "${feed_url}" = "local" ]; } && [ "${feed%v*}" != "allowlist" ] && [ "${feed%v*}" != "blocklist" ]; then
 529                 f_restore "${feed}" "${feed_url}" "${tmp_load}"
 530                 restore_rc="${?}"
 531                 feed_rc="${restore_rc}"
 532         fi
 533
 534         # handle local lists
 535         #
 536         if [ "${feed%v*}" = "allowlist" ]; then
 537                 {
 538                         printf "%s\n\n" "#!/usr/sbin/nft -f"
 539                         [ -s "${tmp_flush}" ] && cat "${tmp_flush}"
 540                         if [ "${proto}" = "MAC" ]; then
 541                                 "${ban_awkcmd}" '/^([0-9A-f]{2}:){5}[0-9A-f]{2}([[:space:]]|$)/{printf "%s, ",tolower($1)}' "${ban_allowlist}" >"${tmp_file}"
 542                                 printf "%s\n" "add set inet banIP ${feed} { type ether_addr; policy ${ban_nftpolicy}; $(f_getelements "${tmp_file}") }"
 543                                 [ -z "${feed_direction##*forwardlan*}" ] && printf "%s\n" "add rule inet banIP lan-forward ether saddr @${feed} counter accept"
 544                         elif [ "${proto}" = "4" ]; then
 545                                 "${ban_awkcmd}" '/^(([0-9]{1,3}\.){3}(1?[0-9][0-9]?|2[0-4][0-9]|25[0-5])(\/(1?[0-9]|2?[0-9]|3?[0-2]))?)([[:space:]]|$)/{printf "%s, ",$1}' "${ban_allowlist}" >"${tmp_file}"
 546                                 printf "%s\n" "add set inet banIP ${feed} { type ipv4_addr; flags interval; auto-merge; policy ${ban_nftpolicy}; $(f_getelements "${tmp_file}") }"
 547                                 if [ -z "${feed_direction##*input*}" ]; then
 548                                         if [ "${ban_allowlistonly}" = "1" ]; then
 549                                                 printf "%s\n" "add rule inet banIP wan-input ip saddr != @${feed} ${log_input} counter drop"
 550                                         else
 551                                                 printf "%s\n" "add rule inet banIP wan-input ip saddr @${feed} counter accept"
 552                                         fi
 553                                 fi
 554                                 if [ -z "${feed_direction##*forwardwan*}" ]; then
 555                                         if [ "${ban_allowlistonly}" = "1" ]; then
 556                                                 printf "%s\n" "add rule inet banIP wan-forward ip saddr != @${feed} ${log_forwardwan} counter drop"
 557                                         else
 558                                                 printf "%s\n" "add rule inet banIP wan-forward ip saddr @${feed} counter accept"
 559                                         fi
 560                                 fi
 561                                 if [ -z "${feed_direction##*forwardlan*}" ]; then
 562                                         if [ "${ban_allowlistonly}" = "1" ]; then
 563                                                 printf "%s\n" "add rule inet banIP lan-forward ip daddr != @${feed} ${log_forwardlan} counter reject with icmp type admin-prohibited"
 564                                         else
 565                                                 printf "%s\n" "add rule inet banIP lan-forward ip daddr @${feed} counter accept"
 566                                         fi
 567                                 fi
 568                         elif [ "${proto}" = "6" ]; then
 569                                 "${ban_awkcmd}" '!/^([0-9A-f]{2}:){5}[0-9A-f]{2}([[:space:]]|$)/{printf "%s\n",$1}' "${ban_allowlist}" |
 570                                         "${ban_awkcmd}" '/^(([0-9A-f]{0,4}:){1,7}[0-9A-f]{0,4}:?(\/(1?[0-2][0-8]|[0-9][0-9]))?)([[:space:]]|$)/{printf "%s, ",tolower($1)}' >"${tmp_file}"
 571                                 printf "%s\n" "add set inet banIP ${feed} { type ipv6_addr; flags interval; auto-merge; policy ${ban_nftpolicy}; $(f_getelements "${tmp_file}") }"
 572                                 if [ -z "${feed_direction##*input*}" ]; then
 573                                         if [ "${ban_allowlistonly}" = "1" ]; then
 574                                                 printf "%s\n" "add rule inet banIP wan-input ip6 saddr != @${feed} ${log_input} counter drop"
 575                                         else
 576                                                 printf "%s\n" "add rule inet banIP wan-input ip6 saddr @${feed} counter accept"
 577                                         fi
 578                                 fi
 579                                 if [ -z "${feed_direction##*forwardwan*}" ]; then
 580                                         if [ "${ban_allowlistonly}" = "1" ]; then
 581                                                 printf "%s\n" "add rule inet banIP wan-forward ip6 saddr != @${feed} ${log_forwardwan} counter drop"
 582                                         else
 583                                                 printf "%s\n" "add rule inet banIP wan-forward ip6 saddr @${feed} counter accept"
 584                                         fi
 585                                 fi
 586                                 if [ -z "${feed_direction##*forwardlan*}" ]; then
 587                                         if [ "${ban_allowlistonly}" = "1" ]; then
 588                                                 printf "%s\n" "add rule inet banIP lan-forward ip6 daddr != @${feed} ${log_forwardlan} counter reject with icmpv6 type admin-prohibited"
 589                                         else
 590                                                 printf "%s\n" "add rule inet banIP lan-forward ip6 daddr @${feed} counter accept"
 591                                         fi
 592                                 fi
 593                         fi
 594                 } >"${tmp_nft}"
 595                 feed_rc="${?}"
 596         elif [ "${feed%v*}" = "blocklist" ]; then
 597                 {
 598                         printf "%s\n\n" "#!/usr/sbin/nft -f"
 599                         [ -s "${tmp_flush}" ] && cat "${tmp_flush}"
 600                         if [ "${proto}" = "MAC" ]; then
 601                                 "${ban_awkcmd}" '/^([0-9A-f]{2}:){5}[0-9A-f]{2}([[:space:]]|$)/{printf "%s, ",tolower($1)}' "${ban_blocklist}" >"${tmp_file}"
 602                                 printf "%s\n" "add set inet banIP ${feed} { type ether_addr; policy ${ban_nftpolicy}; $(f_getelements "${tmp_file}") }"
 603                                 [ -z "${feed_direction##*forwardlan*}" ] && printf "%s\n" "add rule inet banIP lan-forward ether saddr @${feed} ${log_forwardlan} counter reject"
 604                         elif [ "${proto}" = "4" ]; then
 605                                 if [ "${ban_deduplicate}" = "1" ]; then
 606                                         "${ban_awkcmd}" '/^(([0-9]{1,3}\.){3}(1?[0-9][0-9]?|2[0-4][0-9]|25[0-5])(\/(1?[0-9]|2?[0-9]|3?[0-2]))?)([[:space:]]|$)/{printf "%s,\n",$1}' "${ban_blocklist}" >"${tmp_raw}"
 607                                         "${ban_awkcmd}" 'NR==FNR{member[$0];next}!($0 in member)' "${ban_tmpfile}.deduplicate" "${tmp_raw}" 2>/dev/null >"${tmp_split}"
 608                                         "${ban_awkcmd}" 'BEGIN{FS="[ ,]"}NR==FNR{member[$1];next}!($1 in member)' "${ban_tmpfile}.deduplicate" "${ban_blocklist}" 2>/dev/null >"${tmp_raw}"
 609                                         cat "${tmp_raw}" 2>/dev/null >"${ban_blocklist}"
 610                                 else
 611                                         "${ban_awkcmd}" '/^(([0-9]{1,3}\.){3}(1?[0-9][0-9]?|2[0-4][0-9]|25[0-5])(\/(1?[0-9]|2?[0-9]|3?[0-2]))?)([[:space:]]|$)/{printf "%s,\n",$1}' "${ban_blocklist}" >"${tmp_split}"
 612                                 fi
 613                                 "${ban_awkcmd}" '{ORS=" ";print}' "${tmp_split}" 2>/dev/null >"${tmp_file}"
 614                                 printf "%s\n" "add set inet banIP ${feed} { type ipv4_addr; flags interval, timeout; auto-merge; policy ${ban_nftpolicy}; $(f_getelements "${tmp_file}") }"
 615                                 [ -z "${feed_direction##*input*}" ] && printf "%s\n" "add rule inet banIP wan-input ip saddr @${feed} ${log_input} counter drop"
 616                                 [ -z "${feed_direction##*forwardwan*}" ] && printf "%s\n" "add rule inet banIP wan-forward ip saddr @${feed} ${log_forwardwan} counter drop"
 617                                 [ -z "${feed_direction##*forwardlan*}" ] && printf "%s\n" "add rule inet banIP lan-forward ip daddr @${feed} ${log_forwardlan} counter reject with icmp type admin-prohibited"
 618                         elif [ "${proto}" = "6" ]; then
 619                                 if [ "${ban_deduplicate}" = "1" ]; then
 620                                         "${ban_awkcmd}" '!/^([0-9A-f]{2}:){5}[0-9A-f]{2}([[:space:]]|$)/{printf "%s\n",$1}' "${ban_blocklist}" |
 621                                                 "${ban_awkcmd}" '/^(([0-9A-f]{0,4}:){1,7}[0-9A-f]{0,4}:?(\/(1?[0-2][0-8]|[0-9][0-9]))?)([[:space:]]|$)/{printf "%s,\n",tolower($1)}' >"${tmp_raw}"
 622                                         "${ban_awkcmd}" 'NR==FNR{member[$0];next}!($0 in member)' "${ban_tmpfile}.deduplicate" "${tmp_raw}" 2>/dev/null >"${tmp_split}"
 623                                         "${ban_awkcmd}" 'BEGIN{FS="[ ,]"}NR==FNR{member[$1];next}!($1 in member)' "${ban_tmpfile}.deduplicate" "${ban_blocklist}" 2>/dev/null >"${tmp_raw}"
 624                                         cat "${tmp_raw}" 2>/dev/null >"${ban_blocklist}"
 625                                 else
 626                                         "${ban_awkcmd}" '!/^([0-9A-f]{2}:){5}[0-9A-f]{2}([[:space:]]|$)/{printf "%s\n",$1}' "${ban_blocklist}" |
 627                                                 "${ban_awkcmd}" '/^(([0-9A-f]{0,4}:){1,7}[0-9A-f]{0,4}:?(\/(1?[0-2][0-8]|[0-9][0-9]))?)([[:space:]]|$)/{printf "%s,\n",tolower($1)}' >"${tmp_split}"
 628                                 fi
 629                                 "${ban_awkcmd}" '{ORS=" ";print}' "${tmp_split}" 2>/dev/null >"${tmp_file}"
 630                                 printf "%s\n" "add set inet banIP ${feed} { type ipv6_addr; flags interval, timeout; auto-merge; policy ${ban_nftpolicy}; $(f_getelements "${tmp_file}") }"
 631                                 [ -z "${feed_direction##*input*}" ] && printf "%s\n" "add rule inet banIP wan-input ip6 saddr @${feed} ${log_input} counter drop"
 632                                 [ -z "${feed_direction##*forwardwan*}" ] && printf "%s\n" "add rule inet banIP wan-forward ip6 saddr @${feed} ${log_forwardwan} counter drop"
 633                                 [ -z "${feed_direction##*forwardlan*}" ] && printf "%s\n" "add rule inet banIP lan-forward ip6 daddr @${feed} ${log_forwardlan} counter reject with icmpv6 type admin-prohibited"
 634                         fi
 635                 } >"${tmp_nft}"
 636                 feed_rc="${?}"
 637         # handle external downloads
 638         #
 639         elif [ "${restore_rc}" != "0" ] && [ "${feed_url}" != "local" ]; then
 640                 # handle country downloads
 641                 #
 642                 if [ "${feed%v*}" = "country" ]; then
 643                         for country in ${ban_country}; do
 644                                 feed_log="$("${ban_fetchcmd}" ${ban_fetchparm} "${tmp_raw}" "${feed_url}${country}-aggregated.zone" 2>&1)"
 645                                 feed_rc="${?}"
 646                                 [ "${feed_rc}" = "0" ] && cat "${tmp_raw}" 2>/dev/null >>"${tmp_load}"
 647                         done
 648                         rm -f "${tmp_raw}"
 649
 650                 # handle asn downloads
 651                 #
 652                 elif [ "${feed%v*}" = "asn" ]; then
 653                         for asn in ${ban_asn}; do
 654                                 feed_log="$("${ban_fetchcmd}" ${ban_fetchparm} "${tmp_raw}" "${feed_url}AS${asn}" 2>&1)"
 655                                 feed_rc="${?}"
 656                                 [ "${feed_rc}" = "0" ] && cat "${tmp_raw}" 2>/dev/null >>"${tmp_load}"
 657                         done
 658                         rm -f "${tmp_raw}"
 659
 660                 # handle compressed downloads
 661                 #
 662                 elif [ -n "${feed_flag}" ]; then
 663                         case "${feed_flag}" in
 664                                 "gz")
 665                                         feed_log="$("${ban_fetchcmd}" ${ban_fetchparm} "${tmp_raw}" "${feed_url}" 2>&1)"
 666                                         feed_rc="${?}"
 667                                         if [ "${feed_rc}" = "0" ]; then
 668                                                 zcat "${tmp_raw}" 2>/dev/null >"${tmp_load}"
 669                                                 feed_rc="${?}"
 670                                         fi
 671                                         rm -f "${tmp_raw}"
 672                                         ;;
 673                         esac
 674
 675                 # handle normal downloads
 676                 #
 677                 else
 678                         feed_log="$("${ban_fetchcmd}" ${ban_fetchparm} "${tmp_load}" "${feed_url}" 2>&1)"
 679                         feed_rc="${?}"
 680                 fi
 681         fi
 682
 683         # backup/restore
 684         #
 685         if [ "${restore_rc}" != "0" ] && [ "${feed_rc}" = "0" ] && [ "${feed_url}" != "local" ] && [ ! -s "${tmp_nft}" ]; then
 686                 f_backup "${feed}" "${tmp_load}"
 687                 feed_rc="${?}"
 688         elif [ -z "${restore_rc}" ] && [ "${feed_rc}" != "0" ] && [ "${feed_url}" != "local" ] && [ ! -s "${tmp_nft}" ]; then
 689                 f_restore "${feed}" "${feed_url}" "${tmp_load}" "${feed_rc}"
 690                 feed_rc="${?}"
 691         fi
 692
 693         # build nft file with set and rules for regular downloads
 694         #
 695         if [ "${feed_rc}" = "0" ] && [ ! -s "${tmp_nft}" ]; then
 696                 # deduplicate sets
 697                 #
 698                 if [ "${ban_deduplicate}" = "1" ] && [ "${feed_url}" != "local" ]; then
 699                         "${ban_awkcmd}" "${feed_rule}" "${tmp_load}" 2>/dev/null >"${tmp_raw}"
 700                         "${ban_awkcmd}" 'NR==FNR{member[$0];next}!($0 in member)' "${ban_tmpfile}.deduplicate" "${tmp_raw}" 2>/dev/null | tee -a "${ban_tmpfile}.deduplicate" >"${tmp_split}"
 701                 else
 702                         "${ban_awkcmd}" "${feed_rule}" "${tmp_load}" 2>/dev/null >"${tmp_split}"
 703                 fi
 704                 feed_rc="${?}"
 705                 # split sets
 706                 #
 707                 if [ "${feed_rc}" = "0" ]; then
 708                         if [ -n "${ban_splitsize//[![:digit]]/}" ] && [ "${ban_splitsize//[![:digit]]/}" -gt "0" ]; then
 709                                 if ! "${ban_awkcmd}" "NR%${ban_splitsize//[![:digit]]/}==1{file=\"${tmp_file}.\"++i;}{ORS=\" \";print > file}" "${tmp_split}" 2>/dev/null; then
 710                                         rm -f "${tmp_file}".*
 711                                         f_log "info" "failed to split ${feed} set to size '${ban_splitsize//[![:digit]]/}'"
 712                                 fi
 713                         else
 714                                 "${ban_awkcmd}" '{ORS=" ";print}' "${tmp_split}" 2>/dev/null >"${tmp_file}.1"
 715                         fi
 716                         feed_rc="${?}"
 717                 fi
 718                 rm -f "${tmp_raw}" "${tmp_load}"
 719                 if [ "${feed_rc}" = "0" ] && [ "${proto}" = "4" ]; then
 720                         {
 721                                 # nft header (IPv4 set)
 722                                 #
 723                                 printf "%s\n\n" "#!/usr/sbin/nft -f"
 724                                 [ -s "${tmp_flush}" ] && cat "${tmp_flush}"
 725                                 printf "%s\n" "add set inet banIP ${feed} { type ipv4_addr; flags interval; auto-merge; policy ${ban_nftpolicy}; $(f_getelements "${tmp_file}.1") }"
 726
 727                                 # input and forward rules
 728                                 #
 729                                 [ -z "${feed_direction##*input*}" ] && printf "%s\n" "add rule inet banIP wan-input ip saddr @${feed} ${log_input} counter drop"
 730                                 [ -z "${feed_direction##*forwardwan*}" ] && printf "%s\n" "add rule inet banIP wan-forward ip saddr @${feed} ${log_forwardwan} counter drop"
 731                                 [ -z "${feed_direction##*forwardlan*}" ] && printf "%s\n" "add rule inet banIP lan-forward ip daddr @${feed} ${log_forwardlan} counter reject with icmp type admin-prohibited"
 732                         } >"${tmp_nft}"
 733                 elif [ "${feed_rc}" = "0" ] && [ "${proto}" = "6" ]; then
 734                         {
 735                                 # nft header (IPv6 set)
 736                                 #
 737                                 printf "%s\n\n" "#!/usr/sbin/nft -f"
 738                                 [ -s "${tmp_flush}" ] && cat "${tmp_flush}"
 739                                 printf "%s\n" "add set inet banIP ${feed} { type ipv6_addr; flags interval; auto-merge; policy ${ban_nftpolicy}; $(f_getelements "${tmp_file}.1") }"
 740
 741                                 # input and forward rules
 742                                 #
 743                                 [ -z "${feed_direction##*input*}" ] && printf "%s\n" "add rule inet banIP wan-input ip6 saddr @${feed} ${log_input} counter drop"
 744                                 [ -z "${feed_direction##*forwardwan*}" ] && printf "%s\n" "add rule inet banIP wan-forward ip6 saddr @${feed} ${log_forwardwan} counter drop"
 745                                 [ -z "${feed_direction##*forwardlan*}" ] && printf "%s\n" "add rule inet banIP lan-forward ip6 daddr @${feed} ${log_forwardlan} counter reject with icmpv6 type admin-prohibited"
 746                         } >"${tmp_nft}"
 747                 fi
 748         fi
 749
 750         # load generated nft file in banIP table
 751         #
 752         if [ "${feed_rc}" = "0" ]; then
 753                 cnt_dl="$("${ban_awkcmd}" 'END{printf "%d",NR}' "${tmp_split}" 2>/dev/null)"
 754                 if [ "${cnt_dl:-"0"}" -gt "0" ] || [ "${feed_url}" = "local" ] || [ "${feed%v*}" = "allowlist" ] || [ "${feed%v*}" = "blocklist" ]; then
 755                         feed_log="$("${ban_nftcmd}" -f "${tmp_nft}" 2>&1)"
 756                         feed_rc="${?}"
 757                         # load additional split files
 758                         #
 759                         if [ "${feed_rc}" = "0" ]; then
 760                                 for split_file in "${tmp_file}".*; do
 761                                         [ ! -f "${split_file}" ] && break
 762                                         if [ "${split_file##*.}" = "1" ]; then
 763                                                 rm -f "${split_file}"
 764                                                 continue
 765                                         fi
 766                                         if ! "${ban_nftcmd}" add element inet banIP "${feed}" "{ $(cat "${split_file}") }" >/dev/null 2>&1; then
 767                                                 f_log "info" "failed to add split file '${split_file##*.}' to ${feed} set"
 768                                         fi
 769                                         rm -f "${split_file}"
 770                                 done
 771                                 if [ "${ban_debug}" = "1" ] && [ "${ban_reportelements}" = "1" ]; then
 772                                         cnt_set="$("${ban_nftcmd}" -j list set inet banIP "${feed}" 2>/dev/null | jsonfilter -qe '@.nftables[*].set.elem[*]' | wc -l 2>/dev/null)"
 773                                 fi
 774                         fi
 775                 else
 776                         f_log "info" "empty feed ${feed} will be skipped"
 777                 fi
 778         fi
 779         rm -f "${tmp_split}" "${tmp_nft}"
 780         end_ts="$(date +%s)"
 781
 782         f_log "debug" "f_down    ::: name: ${feed}, cnt_dl: ${cnt_dl:-"-"}, cnt_set: ${cnt_set:-"-"}, split_size: ${ban_splitsize:-"-"}, time: $((end_ts - start_ts)), rc: ${feed_rc:-"-"}, log: ${feed_log:-"-"}"
 783 }
 784
 785 # backup feeds
 786 #
 787 f_backup() {
 788         local backup_rc feed="${1}" feed_file="${2}"
 789
 790         gzip -cf "${feed_file}" >"${ban_backupdir}/banIP.${feed}.gz"
 791         backup_rc="${?}"
 792
 793         f_log "debug" "f_backup  ::: name: ${feed}, source: ${feed_file##*/}, target: banIP.${feed}.gz, rc: ${backup_rc}"
 794         return ${backup_rc}
 795 }
 796
 797 # restore feeds
 798 #
 799 f_restore() {
 800         local tmp_feed restore_rc="1" feed="${1}" feed_url="${2}" feed_file="${3}" feed_rc="${4:-"0"}"
 801
 802         [ "${feed_rc}" != "0" ] && restore_rc="${feed_rc}"
 803         [ "${feed_url}" = "local" ] && tmp_feed="${feed%v*}v4" || tmp_feed="${feed}"
 804         if [ -f "${ban_backupdir}/banIP.${tmp_feed}.gz" ]; then
 805                 zcat "${ban_backupdir}/banIP.${tmp_feed}.gz" 2>/dev/null >"${feed_file}"
 806                 restore_rc="${?}"
 807         fi
 808
 809         f_log "debug" "f_restore ::: name: ${feed}, source: banIP.${tmp_feed}.gz, target: ${feed_file##*/}, in_rc: ${feed_rc}, rc: ${restore_rc}"
 810         return ${restore_rc}
 811 }
 812
 813 # remove disabled feeds
 814 #
 815 f_rmset() {
 816         local tmp_del ruleset_raw table_sets handle set del_set feed_log feed_rc
 817
 818         tmp_del="${ban_tmpfile}.final.delete"
 819         ruleset_raw="$("${ban_nftcmd}" -tj list ruleset 2>/dev/null)"
 820         table_sets="$(printf "%s\n" "${ruleset_raw}" | jsonfilter -qe '@.nftables[@.set.table="banIP"].set.name')"
 821         {
 822                 printf "%s\n\n" "#!/usr/sbin/nft -f"
 823                 for set in ${table_sets}; do
 824                         if ! printf "%s" "allowlist blocklist ${ban_feed}" | "${ban_grepcmd}" -q "${set%v*}"; then
 825                                 del_set="${del_set}${set}, "
 826                                 rm -f "${ban_backupdir}/banIP.${set}.gz"
 827                                 printf "%s\n" "flush set inet banIP ${set}"
 828                                 handle="$(printf "%s\n" "${ruleset_raw}" | jsonfilter -l1 -qe "@.nftables[@.rule.table=\"banIP\"&&@.rule.chain=\"wan-input\"][@.expr[0].match.right=\"@${set}\"].handle")"
 829                                 [ -n "${handle}" ] && printf "%s\n" "delete rule inet banIP wan-input handle ${handle}"
 830                                 handle="$(printf "%s\n" "${ruleset_raw}" | jsonfilter -l1 -qe "@.nftables[@.rule.table=\"banIP\"&&@.rule.chain=\"wan-forward\"][@.expr[0].match.right=\"@${set}\"].handle")"
 831                                 [ -n "${handle}" ] && printf "%s\n" "delete rule inet banIP wan-forward handle ${handle}"
 832                                 handle="$(printf "%s\n" "${ruleset_raw}" | jsonfilter -l1 -qe "@.nftables[@.rule.table=\"banIP\"&&@.rule.chain=\"lan-forward\"][@.expr[0].match.right=\"@${set}\"].handle")"
 833                                 [ -n "${handle}" ] && printf "%s\n" "delete rule inet banIP lan-forward handle ${handle}"
 834                                 printf "%s\n\n" "delete set inet banIP ${set}"
 835                         fi
 836                 done
 837         } >"${tmp_del}"
 838
 839         if [ -n "${del_set}" ]; then
 840                 del_set="${del_set%%??}"
 841                 feed_log="$("${ban_nftcmd}" -f "${tmp_del}" 2>&1)"
 842                 feed_rc="${?}"
 843         fi
 844         rm -f "${tmp_del}"
 845
 846         f_log "debug" "f_rmset   ::: sets: ${del_set:-"-"}, rc: ${feed_rc:-"-"}, log: ${feed_log:-"-"}"
 847 }
 848
 849 # generate status information
 850 #
 851 f_genstatus() {
 852         local object duration set table_sets cnt_elements="0" split="0" status="${1}"
 853
 854         [ -z "${ban_dev}" ] && f_conf
 855         if [ "${status}" = "active" ]; then
 856                 if [ -n "${ban_starttime}" ]; then
 857                         ban_endtime="$(date "+%s")"
 858                         duration="$(((ban_endtime - ban_starttime) / 60))m $(((ban_endtime - ban_starttime) % 60))s"
 859                 fi
 860                 table_sets="$("${ban_nftcmd}" -tj list ruleset 2>/dev/null | jsonfilter -qe '@.nftables[@.set.table="banIP"].set.name')"
 861                 if [ "${ban_reportelements}" = "1" ]; then
 862                         for set in ${table_sets}; do
 863                                 cnt_elements="$((cnt_elements + $("${ban_nftcmd}" -j list set inet banIP "${set}" 2>/dev/null | jsonfilter -qe '@.nftables[*].set.elem[*]' | wc -l 2>/dev/null)))"
 864                         done
 865                 fi
 866                 runtime="action: ${ban_action:-"-"}, duration: ${duration:-"-"}, date: $(date "+%Y-%m-%d %H:%M:%S")"
 867         fi
 868         [ ${ban_splitsize:-"0"} -gt "0" ] && split="1"
 869
 870         : >"${ban_rtfile}"
 871         json_init
 872         json_load_file "${ban_rtfile}" >/dev/null 2>&1
 873         json_add_string "status" "${status}"
 874         json_add_string "version" "${ban_ver}"
 875         json_add_string "element_count" "${cnt_elements}"
 876         json_add_array "active_feeds"
 877         if [ "${status}" != "active" ]; then
 878                 json_add_object
 879                 json_add_string "feed" "-"
 880                 json_close_object
 881         else
 882                 for object in ${table_sets}; do
 883                         json_add_object
 884                         json_add_string "feed" "${object}"
 885                         json_close_object
 886                 done
 887         fi
 888         json_close_array
 889         json_add_array "active_devices"
 890         if [ "${status}" != "active" ]; then
 891                 json_add_object
 892                 json_add_string "device" "-"
 893                 json_close_object
 894         else
 895                 for object in ${ban_dev}; do
 896                         json_add_object
 897                         json_add_string "device" "${object}"
 898                         json_close_object
 899                 done
 900                 for object in ${ban_ifv4} ${ban_ifv6}; do
 901                         json_add_object
 902                         json_add_string "interface" "${object}"
 903                         json_close_object
 904                 done
 905         fi
 906         json_close_array
 907         json_add_array "active_subnets"
 908         if [ "${status}" != "active" ]; then
 909                 json_add_object
 910                 json_add_string "subnet" "-"
 911                 json_close_object
 912         else
 913                 for object in ${ban_sub}; do
 914                         json_add_object
 915                         json_add_string "subnet" "${object}"
 916                         json_close_object
 917                 done
 918         fi
 919         json_close_array
 920         json_add_string "nft_info" "priority: ${ban_nftpriority}, policy: ${ban_nftpolicy}, loglevel: ${ban_nftloglevel}, expiry: ${ban_nftexpiry:-"-"}"
 921         json_add_string "run_info" "base: ${ban_basedir}, backup: ${ban_backupdir}, report: ${ban_reportdir}, feed: ${ban_feedfile}"
 922         json_add_string "run_flags" "auto: $(f_char ${ban_autodetect}), proto (4/6): $(f_char ${ban_protov4})/$(f_char ${ban_protov6}), log (wan-inp/wan-fwd/lan-fwd): $(f_char ${ban_loginput})/$(f_char ${ban_logforwardwan})/$(f_char ${ban_logforwardlan}), dedup: $(f_char ${ban_deduplicate}), split: $(f_char ${split}), allowed only: $(f_char ${ban_allowlistonly})"
 923         json_add_string "last_run" "${runtime:-"-"}"
 924         json_add_string "system_info" "cores: ${ban_cores}, memory: ${ban_memory}, device: ${ban_sysver}"
 925         json_dump >"${ban_rtfile}"
 926 }
 927
 928 # get status information
 929 #
 930 f_getstatus() {
 931         local key keylist type value index_key1 index_key2 index_value1 index_value2 actual="${1}"
 932
 933         [ -z "${ban_dev}" ] && f_conf
 934         json_load_file "${ban_rtfile}" >/dev/null 2>&1
 935         if json_get_keys keylist; then
 936                 printf "%s\n" "::: banIP runtime information"
 937                 for key in ${keylist}; do
 938                         json_get_var value "${key}" >/dev/null 2>&1
 939                         if [ "${key}" = "status" ]; then
 940                                 value="${value} ($(f_actual))"
 941                         elif [ "${key}" = "active_devices" ]; then
 942                                 json_select "${key}" >/dev/null 2>&1
 943                                 index=1
 944                                 while json_get_type type "${index}" && [ "${type}" = "object" ]; do
 945                                         json_get_keys index_key1 "${index}" >/dev/null 2>&1
 946                                         json_get_keys index_key2 "$((index + 1))" >/dev/null 2>&1
 947                                         json_get_values index_value1 "${index}" >/dev/null 2>&1
 948                                         if [ "${index}" = "1" ] && [ "${index_key1// /}" = "device" ] && [ "${index_key2// /}" = "interface" ]; then
 949                                                 json_get_values index_value2 "$((index + 1))" >/dev/null 2>&1
 950                                                 value="${index_value1} ::: ${index_value2}"
 951                                                 index="$((index + 1))"
 952                                         elif [ "${index}" = "1" ]; then
 953                                                 value="${index_value1}"
 954                                         elif [ "${index}" != "1" ] && [ "${index_key1// /}" = "device" ] && [ "${index_key2// /}" = "interface" ]; then
 955                                                 json_get_values index_value2 "$((index + 1))" >/dev/null 2>&1
 956                                                 value="${value}, ${index_value1} ::: ${index_value2}"
 957                                                 index="$((index + 1))"
 958                                         elif [ "${index}" != "1" ]; then
 959                                                 value="${value}, ${index_value1}"
 960                                         fi
 961                                         index="$((index + 1))"
 962                                 done
 963                                 json_select ".."
 964                         elif [ "${key%_*}" = "active" ]; then
 965                                 json_select "${key}" >/dev/null 2>&1
 966                                 index=1
 967                                 while json_get_type type "${index}" && [ "${type}" = "object" ]; do
 968                                         json_get_values index_value1 "${index}" >/dev/null 2>&1
 969                                         if [ "${index}" = "1" ]; then
 970                                                 value="${index_value1}"
 971                                         else
 972                                                 value="${value}, ${index_value1}"
 973                                         fi
 974                                         index="$((index + 1))"
 975                                 done
 976                                 json_select ".."
 977                         fi
 978                         value="$(printf "%s" "${value}" |
 979                                 awk '{NR=1;max=118;if(length($0)>max+1)while($0){if(NR==1){print substr($0,1,max)}else{printf"%-24s%s\n","",substr($0,1,max)}{$0=substr($0,max+1);NR=NR+1}}else print}')"
 980                         printf "  + %-17s : %s\n" "${key}" "${value:-"-"}"
 981                 done
 982         else
 983                 printf "%s\n" "::: no banIP runtime information available"
 984         fi
 985 }
 986
 987 # domain lookup
 988 #
 989 f_lookup() {
 990         local cnt list domain lookup ip start_time end_time duration cnt_domain="0" cnt_ip="0" feed="${1}"
 991
 992         start_time="$(date "+%s")"
 993         if [ "${feed}" = "allowlist" ]; then
 994                 list="$("${ban_awkcmd}" '/^([[:alnum:]_-]{1,63}\.)+[[:alpha:]]+([[:space:]]|$)/{printf "%s ",tolower($1)}' "${ban_allowlist}" 2>/dev/null)"
 995         elif [ "${feed}" = "blocklist" ]; then
 996                 list="$("${ban_awkcmd}" '/^([[:alnum:]_-]{1,63}\.)+[[:alpha:]]+([[:space:]]|$)/{printf "%s ",tolower($1)}' "${ban_blocklist}" 2>/dev/null)"
 997         fi
 998
 999         for domain in ${list}; do
1000                 lookup="$("${ban_lookupcmd}" "${domain}" ${ban_resolver} 2>/dev/null | "${ban_awkcmd}" '/^Address[ 0-9]*: /{if(!seen[$NF]++)printf "%s ",$NF}' 2>/dev/null)"
1001                 for ip in ${lookup}; do
1002                         if [ "${ip%%.*}" = "0" ] || [ -z "${ip%%::*}" ]; then
1003                                 continue
1004                         else
1005                                 if { [ "${feed}" = "allowlist" ] && ! "${ban_grepcmd}" -q "^${ip}" "${ban_allowlist}"; } ||
1006                                         { [ "${feed}" = "blocklist" ] && ! "${ban_grepcmd}" -q "^${ip}" "${ban_blocklist}"; }; then
1007                                         cnt_ip="$((cnt_ip + 1))"
1008                                         if [ "${ip##*:}" = "${ip}" ]; then
1009                                                 if ! "${ban_nftcmd}" add element inet banIP "${feed}v4" "{ ${ip} }" >/dev/null 2>&1; then
1010                                                         f_log "info" "failed to add IP '${ip}' (${domain}) to ${feed}v4 set"
1011                                                         continue
1012                                                 fi
1013                                         else
1014                                                 if ! "${ban_nftcmd}" add element inet banIP "${feed}v6" "{ ${ip} }" >/dev/null 2>&1; then
1015                                                         f_log "info" "failed to add IP '${ip}' (${domain}) to ${feed}v6 set"
1016                                                         continue
1017                                                 fi
1018                                         fi
1019                                         if [ "${feed}" = "allowlist" ] && [ "${ban_autoallowlist}" = "1" ]; then
1020                                                 printf "%-42s%s\n" "${ip}" "# '${domain}' added on $(date "+%Y-%m-%d %H:%M:%S")" >>"${ban_allowlist}"
1021                                         elif [ "${feed}" = "blocklist" ] && [ "${ban_autoblocklist}" = "1" ]; then
1022                                                 printf "%-42s%s\n" "${ip}" "# '${domain}' added on $(date "+%Y-%m-%d %H:%M:%S")" >>"${ban_blocklist}"
1023                                         fi
1024                                 fi
1025                         fi
1026                 done
1027                 cnt_domain="$((cnt_domain + 1))"
1028         done
1029         end_time="$(date "+%s")"
1030         duration="$(((end_time - start_time) / 60))m $(((end_time - start_time) % 60))s"
1031
1032         f_log "debug" "f_lookup  ::: name: ${feed}, cnt_domain: ${cnt_domain}, cnt_ip: ${cnt_ip}, duration: ${duration}"
1033 }
1034
1035 # table statistics
1036 #
1037 f_report() {
1038         local report_jsn report_txt set tmp_val ruleset_raw table_sets set_cnt set_input set_forwardwan set_forwardlan set_cntinput set_cntforwardwan set_cntforwardlan output="${1}"
1039         local detail set_details jsnval timestamp autoadd_allow autoadd_block sum_sets sum_setinput sum_setforwardwan sum_setforwardlan sum_setelements sum_cntinput sum_cntforwardwan sum_cntforwardlan
1040
1041         [ -z "${ban_dev}" ] && f_conf
1042         f_mkdir "${ban_reportdir}"
1043         report_jsn="${ban_reportdir}/ban_report.jsn"
1044         report_txt="${ban_reportdir}/ban_report.txt"
1045
1046         # json output preparation
1047         #
1048         ruleset_raw="$("${ban_nftcmd}" -tj list ruleset 2>/dev/null)"
1049         table_sets="$(printf "%s" "${ruleset_raw}" | jsonfilter -qe '@.nftables[@.set.table="banIP"].set.name')"
1050         sum_sets="0"
1051         sum_setinput="0"
1052         sum_setforwardwan="0"
1053         sum_setforwardlan="0"
1054         sum_setelements="0"
1055         sum_cntinput="0"
1056         sum_cntforwardwan="0"
1057         sum_cntforwardlan="0"
1058         timestamp="$(date "+%Y-%m-%d %H:%M:%S")"
1059         : >"${report_jsn}"
1060         {
1061                 printf "%s\n" "{"
1062                 printf "\t%s\n" '"sets": {'
1063                 for set in ${table_sets}; do
1064                         set_cntinput="$(printf "%s" "${ruleset_raw}" | jsonfilter -l1 -qe "@.nftables[@.rule.table=\"banIP\"&&@.rule.chain=\"wan-input\"][@.expr[0].match.right=\"@${set}\"].expr[*].counter.packets")"
1065                         set_cntforwardwan="$(printf "%s" "${ruleset_raw}" | jsonfilter -l1 -qe "@.nftables[@.rule.table=\"banIP\"&&@.rule.chain=\"wan-forward\"][@.expr[0].match.right=\"@${set}\"].expr[*].counter.packets")"
1066                         set_cntforwardlan="$(printf "%s" "${ruleset_raw}" | jsonfilter -l1 -qe "@.nftables[@.rule.table=\"banIP\"&&@.rule.chain=\"lan-forward\"][@.expr[0].match.right=\"@${set}\"].expr[*].counter.packets")"
1067                         if [ "${ban_reportelements}" = "1" ]; then
1068                                 set_cnt="$("${ban_nftcmd}" -j list set inet banIP "${set}" 2>/dev/null | jsonfilter -qe '@.nftables[*].set.elem[*]' | wc -l 2>/dev/null)"
1069                                 sum_setelements="$((sum_setelements + set_cnt))"
1070                         else
1071                                 set_cnt=""
1072                                 sum_setelements="n/a"
1073                         fi
1074                         if [ -n "${set_cntinput}" ]; then
1075                                 set_input="OK"
1076                                 sum_setinput="$((sum_setinput + 1))"
1077                                 sum_cntinput="$((sum_cntinput + set_cntinput))"
1078                         else
1079                                 set_input="-"
1080                                 set_cntinput=""
1081                         fi
1082                         if [ -n "${set_cntforwardwan}" ]; then
1083                                 set_forwardwan="OK"
1084                                 sum_setforwardwan="$((sum_setforwardwan + 1))"
1085                                 sum_cntforwardwan="$((sum_cntforwardwan + set_cntforwardwan))"
1086                         else
1087                                 set_forwardwan="-"
1088                                 set_cntforwardwan=""
1089                         fi
1090                         if [ -n "${set_cntforwardlan}" ]; then
1091                                 set_forwardlan="OK"
1092                                 sum_setforwardlan="$((sum_setforwardlan + 1))"
1093                                 sum_cntforwardlan="$((sum_cntforwardlan + set_cntforwardlan))"
1094                         else
1095                                 set_forwardlan="-"
1096                                 set_cntforwardlan=""
1097                         fi
1098                         [ "${sum_sets}" -gt "0" ] && printf "%s\n" ","
1099                         printf "\t\t%s\n" "\"${set}\": {"
1100                         printf "\t\t\t%s\n" "\"cnt_elements\": \"${set_cnt}\","
1101                         printf "\t\t\t%s\n" "\"cnt_input\": \"${set_cntinput}\","
1102                         printf "\t\t\t%s\n" "\"input\": \"${set_input}\","
1103                         printf "\t\t\t%s\n" "\"cnt_forwardwan\": \"${set_cntforwardwan}\","
1104                         printf "\t\t\t%s\n" "\"wan_forward\": \"${set_forwardwan}\","
1105                         printf "\t\t\t%s\n" "\"cnt_forwardlan\": \"${set_cntforwardlan}\","
1106                         printf "\t\t\t%s\n" "\"lan_forward\": \"${set_forwardlan}\""
1107                         printf "\t\t%s" "}"
1108                         sum_sets="$((sum_sets + 1))"
1109                 done
1110                 printf "\n\t%s\n" "},"
1111                 printf "\t%s\n" "\"timestamp\": \"${timestamp}\","
1112                 printf "\t%s\n" "\"autoadd_allow\": \"$("${ban_grepcmd}" -c "added on ${timestamp% *}" "${ban_allowlist}")\","
1113                 printf "\t%s\n" "\"autoadd_block\": \"$("${ban_grepcmd}" -c "added on ${timestamp% *}" "${ban_blocklist}")\","
1114                 printf "\t%s\n" "\"sum_sets\": \"${sum_sets}\","
1115                 printf "\t%s\n" "\"sum_setinput\": \"${sum_setinput}\","
1116                 printf "\t%s\n" "\"sum_setforwardwan\": \"${sum_setforwardwan}\","
1117                 printf "\t%s\n" "\"sum_setforwardlan\": \"${sum_setforwardlan}\","
1118                 printf "\t%s\n" "\"sum_setelements\": \"${sum_setelements}\","
1119                 printf "\t%s\n" "\"sum_cntinput\": \"${sum_cntinput}\","
1120                 printf "\t%s\n" "\"sum_cntforwardwan\": \"${sum_cntforwardwan}\","
1121                 printf "\t%s\n" "\"sum_cntforwardlan\": \"${sum_cntforwardlan}\""
1122                 printf "%s\n" "}"
1123         } >>"${report_jsn}"
1124
1125         # text output preparation
1126         #
1127         if [ "${output}" != "json" ] && [ -s "${report_jsn}" ]; then
1128                 : >"${report_txt}"
1129                 json_init
1130                 if json_load_file "${report_jsn}" >/dev/null 2>&1; then
1131                         json_get_var timestamp "timestamp" >/dev/null 2>&1
1132                         json_get_var autoadd_allow "autoadd_allow" >/dev/null 2>&1
1133                         json_get_var autoadd_block "autoadd_block" >/dev/null 2>&1
1134                         json_get_var sum_sets "sum_sets" >/dev/null 2>&1
1135                         json_get_var sum_setinput "sum_setinput" >/dev/null 2>&1
1136                         json_get_var sum_setforwardwan "sum_setforwardwan" >/dev/null 2>&1
1137                         json_get_var sum_setforwardlan "sum_setforwardlan" >/dev/null 2>&1
1138                         json_get_var sum_setelements "sum_setelements" >/dev/null 2>&1
1139                         json_get_var sum_cntinput "sum_cntinput" >/dev/null 2>&1
1140                         json_get_var sum_cntforwardwan "sum_cntforwardwan" >/dev/null 2>&1
1141                         json_get_var sum_cntforwardlan "sum_cntforwardlan" >/dev/null 2>&1
1142                         {
1143                                 printf "%s\n%s\n%s\n" ":::" "::: banIP Set Statistics" ":::"
1144                                 printf "%s\n" "    Timestamp: ${timestamp}"
1145                                 printf "%s\n" "    ------------------------------"
1146                                 printf "%s\n" "    auto-added to allowlist today: ${autoadd_allow}"
1147                                 printf "%s\n\n" "    auto-added to blocklist today: ${autoadd_block}"
1148                                 json_select "sets" >/dev/null 2>&1
1149                                 json_get_keys table_sets >/dev/null 2>&1
1150                                 if [ -n "${table_sets}" ]; then
1151                                         printf "%-25s%-15s%-24s%-24s%s\n" "    Set" "| Elements" "| WAN-Input (packets)" "| WAN-Forward (packets)" "| LAN-Forward (packets)"
1152                                         printf "%s\n" "    ---------------------+--------------+-----------------------+-----------------------+------------------------"
1153                                         for set in ${table_sets}; do
1154                                                 printf "    %-21s" "${set}"
1155                                                 json_select "${set}"
1156                                                 json_get_keys set_details
1157                                                 for detail in ${set_details}; do
1158                                                         json_get_var jsnval "${detail}" >/dev/null 2>&1
1159                                                         case "${detail}" in
1160                                                                 "cnt_elements")
1161                                                                         printf "%-15s" "| ${jsnval}"
1162                                                                         ;;
1163                                                                 "cnt_input" | "cnt_forwardwan" | "cnt_forwardlan")
1164                                                                         [ -n "${jsnval}" ] && tmp_val=": ${jsnval}"
1165                                                                         ;;
1166                                                                 *)
1167                                                                         printf "%-24s" "| ${jsnval}${tmp_val}"
1168                                                                         tmp_val=""
1169                                                                         ;;
1170                                                         esac
1171                                                 done
1172                                                 printf "\n"
1173                                                 json_select ".."
1174                                         done
1175                                         printf "%s\n" "    ---------------------+--------------+-----------------------+-----------------------+------------------------"
1176                                         printf "%-25s%-15s%-24s%-24s%s\n" "    ${sum_sets}" "| ${sum_setelements}" "| ${sum_setinput} (${sum_cntinput})" "| ${sum_setforwardwan} (${sum_cntforwardwan})" "| ${sum_setforwardlan} (${sum_cntforwardlan})"
1177                                 fi
1178                         } >>"${report_txt}"
1179                 fi
1180         fi
1181
1182         # output channel (text|json|mail)
1183         #
1184         case "${output}" in
1185                 "text")
1186                         [ -s "${report_txt}" ] && cat "${report_txt}"
1187                         ;;
1188                 "json")
1189                         [ -s "${report_jsn}" ] && cat "${report_jsn}"
1190                         ;;
1191                 "mail")
1192                         [ -n "${ban_mailreceiver}" ] && [ -x "${ban_mailcmd}" ] && f_mail
1193                         ;;
1194         esac
1195         rm -f "${report_txt}"
1196 }
1197
1198 # set search
1199 #
1200 f_search() {
1201         local table_sets ip proto run_search search="${1}"
1202
1203         if [ -n "${search}" ]; then
1204                 ip="$(printf "%s" "${search}" | "${ban_awkcmd}" 'BEGIN{RS="(([0-9]{1,3}\\.){3}[0-9]{1,3})+"}{printf "%s",RT}')"
1205                 [ -n "${ip}" ] && proto="v4"
1206                 if [ -z "${proto}" ]; then
1207                         ip="$(printf "%s" "${search}" | "${ban_awkcmd}" 'BEGIN{RS="([A-Fa-f0-9]{1,4}::?){3,7}[A-Fa-f0-9]{1,4}"}{printf "%s",RT}')"
1208                         [ -n "${ip}" ] && proto="v6"
1209                 fi
1210         fi
1211         if [ -n "${proto}" ]; then
1212                 table_sets="$("${ban_nftcmd}" -tj list ruleset 2>/dev/null | jsonfilter -qe "@.nftables[@.set.table=\"banIP\"&&@.set.type=\"ip${proto}_addr\"].set.name")"
1213         else
1214                 printf "%s\n%s\n%s\n" ":::" "::: no valid search input" ":::"
1215                 return
1216         fi
1217         printf "%s\n%s\n%s\n" ":::" "::: banIP Search" ":::"
1218         printf "%s\n" "    Looking for IP '${ip}' on $(date "+%Y-%m-%d %H:%M:%S")"
1219         printf "%s\n" "    ---"
1220         cnt="1"
1221         run_search="/var/run/banIP.search"
1222         for set in ${table_sets}; do
1223                 (
1224                         if "${ban_nftcmd}" get element inet banIP "${set}" "{ ${ip} }" >/dev/null 2>&1; then
1225                                 printf "%s\n" "    IP found in Set '${set}'"
1226                                 : >"${run_search}"
1227                         fi
1228                 ) &
1229                 hold="$((cnt % ban_cores))"
1230                 [ "${hold}" = "0" ] && wait
1231                 cnt="$((cnt + 1))"
1232         done
1233         wait
1234         if [ ! -f "${run_search}" ]; then
1235                 printf "%s\n" "    IP not found"
1236         else
1237                 rm -f "${run_search}"
1238         fi
1239 }
1240
1241 # set survey
1242 #
1243 f_survey() {
1244         local set_elements set="${1}"
1245
1246         [ -n "${set}" ] && set_elements="$("${ban_nftcmd}" -j list set inet banIP "${set}" 2>/dev/null | jsonfilter -qe '@.nftables[*].set.elem[*]')"
1247
1248         if [ -z "${set}" ] || [ -z "${set_elements}" ]; then
1249                 printf "%s\n%s\n%s\n" ":::" "::: no valid survey input" ":::"
1250                 return
1251         fi
1252         printf "%s\n%s\n%s\n" ":::" "::: banIP Survey" ":::"
1253         printf "%s\n" "    List the elements of Set '${set}' on $(date "+%Y-%m-%d %H:%M:%S")"
1254         printf "%s\n" "    ---"
1255         printf "%s\n" "${set_elements}"
1256 }
1257
1258 # send status mails
1259 #
1260 f_mail() {
1261         local msmtp_debug
1262
1263         # load mail template
1264         #
1265         [ -r "${ban_mailtemplate}" ] && . "${ban_mailtemplate}" || f_log "info" "the mail template is missing"
1266         [ -z "${mail_text}" ] && f_log "info" "the 'mail_text' template variable is empty"
1267         [ "${ban_debug}" = "1" ] && msmtp_debug="--debug"
1268
1269         # send mail
1270         #
1271         ban_mailhead="From: ${ban_mailsender}\nTo: ${ban_mailreceiver}\nSubject: ${ban_mailtopic}\nReply-to: ${ban_mailsender}\nMime-Version: 1.0\nContent-Type: text/html;charset=utf-8\nContent-Disposition: inline\n\n"
1272         if printf "%b" "${ban_mailhead}${mail_text}" | "${ban_mailcmd}" --timeout=10 ${msmtp_debug} -a "${ban_mailprofile}" "${ban_mailreceiver}" >/dev/null 2>&1; then
1273                 f_log "info" "status mail was sent successfully"
1274         else
1275                 f_log "info" "failed to send status mail (${?})"
1276         fi
1277
1278         f_log "debug" "f_mail    ::: notification: ${ban_mailnotification}, template: ${ban_mailtemplate}, profile: ${ban_mailprofile}, receiver: ${ban_mailreceiver}, rc: ${?}"
1279 }
1280
1281 # check banIP availability and initial sourcing
1282 #
1283 f_system
1284 if [ "${ban_action}" != "stop" ]; then
1285         if [ -r "/lib/functions.sh" ] && [ -r "/lib/functions/network.sh" ] && [ -r "/usr/share/libubox/jshn.sh" ]; then
1286                 . "/lib/functions.sh"
1287                 . "/lib/functions/network.sh"
1288                 . "/usr/share/libubox/jshn.sh"
1289         else
1290                 f_log "err" "system libraries not found"
1291         fi
1292         [ ! -d "/etc/banip" ] && f_log "err" "banIP config directory not found, please re-install the package"
1293         [ ! -r "/etc/banip/banip.feeds" ] && f_log "err" "banIP feed file not found, please re-install the package"
1294         [ ! -r "/etc/config/banip" ] && f_log "err" "banIP config not found, please re-install the package"
1295         [ "$(uci_get banip global ban_enabled)" = "0" ] && f_log "err" "banIP is currently disabled, please set the config option 'ban_enabled' to '1' to use this service"
1296 fi