166 lines
4.3 KiB
Bash
166 lines
4.3 KiB
Bash
#!/bin/bash
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# file: modules/background.sh
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# do not edit, this file will be overwritten on update
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# This file is public domain in the USA and all free countries.
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# Elsewhere, consider it to be WTFPLv2. (wtfpl.net/txt/copying)
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#
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#### $$VERSION$$ v0.98-dev-70-g694ee61
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# will be automatically sourced from bashbot
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# source once magic, function named like file
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eval "$(basename "${BASH_SOURCE[0]}")(){ :; }"
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######
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# interactive and background functions
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# old syntax as aliases
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background() {
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start_back "${CHAT[ID]}" "$1" "$2"
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}
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startproc() {
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start_proc "${CHAT[ID]}" "$1" "$2"
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}
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checkback() {
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check_back "${CHAT[ID]}" "$1"
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}
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checkproc() {
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check_proc "${CHAT[ID]}" "$1"
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}
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killback() {
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kill_back "${CHAT[ID]}" "$1"
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}
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killproc() {
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kill_proc "${CHAT[ID]}" "$1"
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}
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# inline and background functions
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# $1 chatid
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# $2 program
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# $3 jobname
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# $4 $5 parameters
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start_back() {
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local cmdfile; cmdfile="${DATADIR:-.}/$(procname "$1")$3-back.cmd"
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printf '%s\n' "$1:$3:$2" >"${cmdfile}"
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restart_back "$@"
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}
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restart_back() {
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local fifo; fifo="${DATADIR:-.}/$(procname "$1" "back-$3-")"
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printf "%s: Start background job CHAT=%s JOB=%s CMD=%s\n" "$(date)" "${1}" "${fifo##*/}" "${2} ${4} ${5}" >>"${UPDATELOG}"
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check_back "$1" "$3" && kill_proc "$1" "back-$3-"
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nohup bash -c "{ $2 \"$4\" \"$5\" \"${fifo}\" | \"${SCRIPT}\" outproc \"${1}\" \"${fifo}\"; }" &>>"${fifo}.log" &
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sleep 0.5 # give bg job some time to init
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}
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# $1 chatid
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# $2 program
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# $3 $4 parameters
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start_proc() {
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[ -z "$2" ] && return
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[ -x "${2%% *}" ] || return 1
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local fifo; fifo="${DATADIR:-.}/$(procname "$1")"
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printf "%s: Start interacitve script CHAT=%s JOB=%s CMD=%s\n" "$(date)" "${1}" "${fifo##*/}" "${2} ${3} ${4}" >>"${UPDATELOG}"
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check_proc "$1" && kill_proc "$1"
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mkfifo "${fifo}"
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nohup bash -c "{ $2 \"$4\" \"$5\" \"$fifo\" | \"${SCRIPT}\" outproc \"${1}\" \"${fifo}\"
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rm \"${fifo}\"; [ -s \"${fifo}.log\" ] || rm -f \"${fifo}.log\"; }" &>>"${fifo}.log" &
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}
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# $1 chatid
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# $2 jobname
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check_back() {
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check_proc "$1" "back-$2-"
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}
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# $1 chatid
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# $2 prefix
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check_proc() {
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[ -n "$(proclist "$(procname "$1" "$2")")" ]
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# shellcheck disable=SC2034
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res=$?; return $?
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}
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# $1 chatid
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# $2 jobname
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kill_back() {
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kill_proc "$1" "back-$2-"
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rm -f "${DATADIR:-.}/$(procname "$1")$2-back.cmd"
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}
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# $1 chatid
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# $2 prefix
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kill_proc() {
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local fifo prid
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fifo="$(procname "$1" "$2")"
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prid="$(proclist "${fifo}")"
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fifo="${DATADIR:-.}/${fifo}"
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printf "%s: Stop interacitve / background CHAT=%s JOB=%s\n" "$(date)" "${1}" "${fifo##*/}" >>"${UPDATELOG}"
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# shellcheck disable=SC2086
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[ -n "${prid}" ] && kill ${prid}
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[ -s "${fifo}.log" ] || rm -f "${fifo}.log"
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[ -p "${fifo}" ] && rm -f "${fifo}";
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}
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# $1 chatid
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# $2 message
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send_interactive() {
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local fifo; fifo="${DATADIR:-.}/$(procname "$1")"
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[ -p "${fifo}" ] && printf '%s\n' "$2" >"${fifo}" & # not blocking!
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}
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# old style but may not work because of local checks
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inproc() {
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send_interactive "${CHAT[ID]}" "${MESSAGE}"
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}
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# start stop all jobs
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# $1 command
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# killb*
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# suspendb*
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# resumeb*
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job_control() {
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local BOT ADM content proc CHAT job fifo killall=""
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BOT="$(getConfigKey "botname")"
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ADM="$(getConfigKey "botadmin")"
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for FILE in "${DATADIR:-.}/"*-back.cmd; do
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[ "${FILE}" = "${DATADIR:-.}/*-back.cmd" ] && echo -e "${RED}No background processes.${NC}" && break
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content="$(< "${FILE}")"
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CHAT="${content%%:*}"
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job="${content#*:}"
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proc="${job#*:}"
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job="${job%:*}"
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fifo="$(procname "${CHAT}" "${job}")"
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case "$1" in
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"resumeb"*|"backgr"*)
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printf "Restart Job: %s %s\n" "${proc}" " ${fifo}"
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restart_back "${CHAT}" "${proc}" "${job}"
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# inform botadmin about stop
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[ -n "${ADM}" ] && send_normal_message "${ADM}" "Bot ${BOT} restart background jobs ..." &
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;;
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"suspendb"*)
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printf "Suspend Job: %s %s\n" "${proc}" " ${fifo}"
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kill_proc "${CHAT}" "${job}"
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# inform botadmin about stop
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[ -n "${ADM}" ] && send_normal_message "${ADM}" "Bot ${BOT} suspend background jobs ..." &
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killall="y"
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;;
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"killb"*)
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printf "Kill Job: %s %s\n" "${proc}" " ${fifo}"
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kill_proc "${CHAT}" "${job}"
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rm -f "${FILE}" # remove job
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# inform botadmin about stop
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[ -n "${ADM}" ] && send_normal_message "${ADM}" "Bot ${BOT} kill background jobs ..." &
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killall="y"
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;;
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esac
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# send message only onnfirst job
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ADM=""
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done
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# kill all requestet. kill ALL background jobs, even not listed in data-bot-bash
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[ "${killall}" = "y" ] && killallproc "back-"
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}
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