net/banip/files/banip.init

   1 #!/bin/sh /etc/rc.common
   2 # banIP init script - ban incoming and outgoing IPs via named nftables Sets
   3 # Copyright (c) 2018-2024 Dirk Brenken (dev@brenken.org)
   4 # This is free software, licensed under the GNU General Public License v3.
   5
   6 # (s)hellcheck exceptions
   7 # shellcheck disable=all
   8
   9 START=95
  10 USE_PROCD=1
  11
  12 extra_command "report" "[text|json|mail] Print banIP related Set statistics"
  13 extra_command "search" "[<IPv4 address>|<IPv6 address>] Check if an element exists in a banIP Set"
  14 extra_command "survey" "[<Set name>] List all elements of a given banIP Set"
  15 extra_command "lookup" "Lookup the IPs of domain names in the local lists and update them"
  16
  17 ban_init="/etc/init.d/banip"
  18 ban_service="/usr/bin/banip-service.sh"
  19 ban_funlib="/usr/lib/banip-functions.sh"
  20 ban_pidfile="/var/run/banip.pid"
  21 ban_lock="/var/run/banip.lock"
  22
  23 [ "${action}" = "boot" ] && "${ban_init}" running && exit 0
  24 { [ "${action}" = "stop" ] || [ "${action}" = "report" ] || [ "${action}" = "search" ] || [ "${action}" = "survey" ] || [ "${action}" = "lookup" ]; } && ! "${ban_init}" running && exit 0
  25 [ ! -r "${ban_funlib}" ] && { [ "${action}" = "boot" ] || [ "${action}" = "start" ] || [ "${action}" = "restart" ] || [ "${action}" = "reload" ] || [ "${action}" = "stop" ] || [ "${action}" = "report" ] || [ "${action}" = "search" ] || [ "${action}" = "survey" ] || [ "${action}" = "lookup" ] || [ "${action}" = "status" ]; } && exit 1
  26 [ -d "${ban_lock}" ] && { [ "${action}" = "boot" ] || [ "${action}" = "start" ] || [ "${action}" = "restart" ] || [ "${action}" = "reload" ] || [ "${action}" = "lookup" ]; } && exit 1
  27 [ ! -d "${ban_lock}" ] && { [ "${action}" = "boot" ] || [ "${action}" = "start" ] || [ "${action}" = "restart" ] || [ "${action}" = "reload" ] || [ "${action}" = "lookup" ]; } && mkdir -p "${ban_lock}"
  28 { [ "${action}" = "boot" ] || [ "${action}" = "start" ] || [ "${action}" = "restart" ] || [ "${action}" = "reload" ] || [ "${action}" = "stop" ] || [ "${action}" = "report" ] || [ "${action}" = "search" ] || [ "${action}" = "survey" ] || [ "${action}" = "lookup" ] || [ "${action}" = "status" ]; } && . "${ban_funlib}"
  29 [ ! -d "${ban_lock}" ] && { [ "${action}" = "boot" ] || [ "${action}" = "start" ] || [ "${action}" = "restart" ] || [ "${action}" = "reload" ] || [ "${action}" = "lookup" ]; } && exit 1
  30
  31 boot() {
  32         : >"${ban_pidfile}"
  33         rc_procd start_service "boot"
  34 }
  35
  36 start_service() {
  37         if "${ban_init}" enabled; then
  38                 f_rmpid
  39                 procd_open_instance "banip-service"
  40                 procd_set_param command "${ban_service}" "${@:-"${action}"}"
  41                 procd_set_param pidfile "${ban_pidfile}"
  42                 procd_set_param nice "$(uci_get banip global ban_nicelimit "0")"
  43                 procd_set_param limits nofile="$(uci_get banip global ban_filelimit "1024")"
  44                 procd_set_param stdout 1
  45                 procd_set_param stderr 1
  46                 procd_close_instance
  47         else
  48                 f_log "err" "banIP service autostart is disabled"
  49                 rm -rf "${ban_lock}"
  50         fi
  51 }
  52
  53 reload_service() {
  54         f_rmpid
  55         rc_procd start_service "reload"
  56 }
  57
  58 stop_service() {
  59         "${ban_nftcmd}" delete table inet banIP >/dev/null 2>&1
  60         f_genstatus "stopped"
  61         f_rmpid
  62         [ "${action}" = "stop" ] && rm -rf "${ban_lock}"
  63 }
  64
  65 restart() {
  66         stop_service
  67         rc_procd start_service "restart"
  68 }
  69
  70 status() {
  71         status_service
  72 }
  73
  74 status_service() {
  75         f_getstatus
  76 }
  77
  78 report() {
  79         f_report "${1:-"text"}"
  80 }
  81
  82 search() {
  83         f_search "${1}"
  84 }
  85
  86 survey() {
  87         f_survey "${1}"
  88 }
  89
  90 lookup() {
  91         local list hold cnt="1"
  92
  93         for list in allowlist blocklist; do
  94                 (f_lookup "${list}") &
  95                 hold="$((cnt % ban_cores))"
  96                 [ "${hold}" = "0" ] && wait
  97                 cnt="$((cnt + 1))"
  98         done
  99         wait
 100         rm -rf "${ban_lock}"
 101 }
 102
 103 service_triggers() {
 104         local iface trigger delay
 105
 106         delay="$(uci_get banip global ban_triggerdelay "20")"
 107         trigger="$(uci_get banip global ban_trigger)"
 108
 109         PROCD_RELOAD_DELAY="$((delay * 1000))"
 110         for iface in ${trigger}; do
 111                 procd_add_interface_trigger "interface.*.up" "${iface}" "${ban_init}" reload
 112         done
 113
 114         PROCD_RELOAD_DELAY="$((2 * 1000))"
 115         procd_add_reload_trigger "banip"
 116 }