ublinux-init/ublinux/rc.pamsession.d/02-journald-notify

#!/usr/bin/env bash
#
# Author: Dmitry Razumov <asmeron@ublinux.com>
# Copyright (c) 2021-2025 UBLinux <support@ublinux.com>
#
# Extended pattern matching: https://www.gnu.org/software/bash/manual/html_node/Pattern-Matching.html#Pattern-Matching
shopt -s extglob

ENABLED=
[[ ${ENABLED} == yes ]] || exit 0

SOURCE=/usr/lib/ublinux/functions; [[ -f ${SOURCE} ]] && . ${SOURCE} 2>/dev/null
SOURCE=/usr/lib/ublinux/default; [[ -f ${SOURCE} ]] && . ${SOURCE} 2>/dev/null

SOURCE=${SYSCONF}/config; [[ -f ${SOURCE} ]] && . ${SOURCE} 2>/dev/null
SOURCE=${SYSCONF}/logging; [ -f ${SOURCE} ] && . ${SOURCE} 2>/dev/null


################################################################################
## JOURNALD_NOTIFY[u:NetworkManager:warning]=@
## JOURNALD_NOTIFY[u:NetworkManager:warning]=ip@conflict
## JOURNALD_NOTIFY[u:*Network*:warning]=@
## -u --unit
## echo "$(printf 'journalctl'; printf ' -u %s' $(journalctl -q -F UNIT | grep -E '^Network'))"
## journalctl -u NetworkManager -p warning -b -o export -n1 -f

################################################################################
## JOURNALD_NOTIFY[uu:NetworkManager:warning]=@
## --user-unit

################################################################################
## JOURNALD_NOTIFY[t:*Network*:warning]=@
## -t, --identifier=SYSLOG_IDENTIFIER
## echo "$(printf 'journalctl'; printf ' -t %s' $(journalctl -q -F SYSLOG_IDENTIFIER | grep -E '^gnome'))"
## journalctl -t gnome-system-monitor.desktop -t gnome-shell -t gnome-keyring-daemon -t gnome-session-binary -t gnome-session

################################################################################
## JOURNALD_NOTIFY[f:daemon:warning]=@
## --facility

declare -A JOURNALD_NOTIFY

## Вывод уведомления на рабочий стол полученных от лога journald
## JOURNALD_NOTIFY[<type>|<type_value>|<priority>|<options>]=<regexp_message>
##   <type>		# Тип фильтра
##     u		# Фильтр по юнитам системным, применимо на юнимами regexp
##     uu		# Фильтр (user-unit) по юнитам пользователя, применимо на юнимами regexp
##     t		# Фильтр (identifier) по идентификатору SYSLOG_IDENTIFIER, применимо regexp
##     f		# Фильтр (facility) по типу объекта SYSLOG, строгое значение
##   <type_value>	# Значения для типа фильтра
## 			# Если <type>=u то применимо REGEXP выражение
## 			# Если <type>=uu то применимо REGEXP выражение
## 			# Если <type>=t то применимо REGEXP выражение
## 			# Если <type>=f то применимы варианты :
## 			#   0: kern	(Kernel messages)
## 			#   1: user	(User-level messages)
## 			#   2: mail	(Mail system)
## 			#   3: daemon	(System daemons)
## 			#   4: auth	(Security/authorization messages)
## 			#   5: syslog	(Messages generated internally by syslogd)
## 			#   6: lpr	(Line printer subsystem (archaic subsystem))
## 			#   7: news	(Network news subsystem (archaic subsystem))
## 			#   8: uucp	(UUCP subsystem (archaic subsystem))
## 			#   9: -	(Clock daemon systemd-timesyncd)
## 			#   10: authpriv (Security/authorization messages)
## 			#   11: ftp	(FTP daemon)
## 			#   12: -	(NTP subsystem)
## 			#   13: -	(Log audit)
## 			#   14: -	(Log alert)
## 			#   15: cron	(Scheduling daemon)
## 			#   16: local0	(Local use 0 (local0))
## 			#   17: local1	(Local use 1 (local1))
## 			#   18: local2	(Local use 2 (local2))
## 			#   19: local3	(Local use 3 (local3))
## 			#   20: local4	(Local use 4 (local4))
## 			#   21: local5	(Local use 5 (local5))
## 			#   22: local6	(Local use 6 (local6))
## 			#   23: local7	(Local use 7 (local7))
##   <priority>		# Фильтр по приоритету 0:emerg 1:alert 2:crit 3:err 4:warning 5:notice 6:info 7:debug
##			# 0: emergency (неработоспособность системы)
##			# 1: alerts (предупреждения, требующие немедленного вмешательства)
##			# 2: critical (критическое состояние)
##			# 3: errors (ошибки)
##			# 4: warning (предупреждения)
##			# 5: notice (уведомления)
##			# 6: info (информационные сообщения)
##			# 7: debug (отладочные сообщения)
##  <options>		# Произвольные дополнительные опции фильтра пользователя для journald
##  <regexp_message>	# Шаблон обработки сообщения
##    ip@conflict	# Вырезать сообщение о конфликте IP адреса
##    <regexp>		# Произвольное выражение вырезки для команды sed

## JOURNALD_NOTIFY[u:NetworkManager:warning]=@
## JOURNALD_NOTIFY[u:NetworkManager:warning]=ip@conflict
## JOURNALD_NOTIFY[u:*Network*:warning]=@
## JOURNALD_NOTIFY[uu:NetworkManager:warning]=@
## JOURNALD_NOTIFY[t:*Network*:warning]=@
## JOURNALD_NOTIFY[f:daemon:warning]=@

#JOURNALD_NOTIFY[u:NetworkManager:warning]=@

exec_01_journald_notify(){
    [[ $1 == @("set="|"set+="|"set++="|"set-="|"set--="|"remove") ]] && local COMMAND=$1 && shift
    [[ -n ${COMMAND} ]] || local COMMAND="set="
    [[ $(declare -p JOURNALD_NOTIFY 2>/dev/null) =~ ^"declare -A" ]] || declare -gA JOURNALD_NOTIFY
    local PARAM="$@"
    if [[ -n ${PARAM} ]]; then
	local APPDESKTOP_PLACEONDESKTOP_INIT=
	declare -A APPDESKTOP_PLACEONDESKTOP_INIT=()
	[[ ${PARAM} =~ ^[[:alnum:]_]+("="|"[".*"]=") ]] && eval "${PARAM%%=*}=\${PARAM#*=}"
    fi
    if [[ ${COMMAND} == @("set="|"set+="|"set++=") ]] && [[ ${#APPDESKTOP_PLACEONDESKTOP_INIT[@]} -ne 0 ]]; then
	local ID_GROUPS= SELECT_USER_HOME=
	for SELECT_USERS_GROUPS in "${!APPDESKTOP_PLACEONDESKTOP_INIT[@]}"; do
	    while IFS= read -r READ_USER_GROUP; do
		if [[ -n ${SELECT_USER} ]]; then
		# Применить для PAM пользователя
		    [[ -z ${ID_GROUPS} ]] && ID_GROUPS=$(id --name --groups ${SELECT_USER})
		    if [[ ${READ_USER_GROUP} == "0" ]] || [[ ${READ_USER_GROUP} == ${SELECT_USER} ]] || [[ ${READ_USER_GROUP} =~ ^'@' && ${ID_GROUPS} =~ (^| )${READ_USER_GROUP//@/}( |$) ]]; then
			SELECT_USER_HOME_INIT=$(getent passwd ${SELECT_USER} | cut -d: -f6)
			[[ -f ${SELECT_USER_HOME_INIT}/.config/.place_on_desktop_init ]] && continue
			copy_desktop "${SELECT_USER}" "${APPDESKTOP_PLACEONDESKTOP_INIT[${SELECT_USERS_GROUPS}]}" && touch ${SELECT_USER_HOME_INIT}/.config/.place_on_desktop_init
		    fi
		elif [[ ${READ_USER_GROUP} == "0" ]]; then
		# Применить для всех пользователей
		    for SELECT_USER in $(getent passwd | cut -d: -f1 | xargs); do
			SELECT_USER_HOME_INIT=$(getent passwd ${SELECT_USER} | cut -d: -f6)
			[[ -f ${SELECT_USER_HOME_INIT}/.config/.place_on_desktop_init ]] && continue
			copy_desktop "${SELECT_USER}" "${APPDESKTOP_PLACEONDESKTOP_INIT[${SELECT_USERS_GROUPS}]}" && touch ${SELECT_USER_HOME_INIT}/.config/.place_on_desktop_init
			SELECT_USER_HOME=
		    done
		    SELECT_USER=
		elif [[ ! ${READ_USER_GROUP} =~ ^'@' ]] && getent passwd "${READ_USER_GROUP}" &>/dev/null; then
		# Применить для выбанного пользователь
		    SELECT_USER=${READ_USER_GROUP}
		    SELECT_USER_HOME_INIT=$(getent passwd ${SELECT_USER} | cut -d: -f6)
		    [[ -f ${SELECT_USER_HOME_INIT}/.config/.place_on_desktop_init ]] && continue
		    copy_desktop "${SELECT_USER}" "${APPDESKTOP_PLACEONDESKTOP_INIT[${SELECT_USERS_GROUPS}]}" && touch ${SELECT_USER_HOME_INIT}/.config/.place_on_desktop_init
		    SELECT_USER=; SELECT_USER_HOME=
		elif [[ ${READ_USER_GROUP} =~ ^'@' ]] && getent group "${READ_USER_GROUP//@/}" &>/dev/null; then
		# Применить для выбраной группа
		    for SELECT_USER in $(getent group "${READ_USER_GROUP//@/}" | cut -d: -f4 | tr , ' '); do
			SELECT_USER_HOME_INIT=$(getent passwd ${SELECT_USER} | cut -d: -f6)
			[[ -f ${SELECT_USER_HOME_INIT}/.config/.place_on_desktop_init ]] && continue
			copy_desktop "${SELECT_USER}" "${APPDESKTOP_PLACEONDESKTOP_INIT[${SELECT_USERS_GROUPS}]}" && touch ${SELECT_USER_HOME_INIT}/.config/.place_on_desktop_init
			SELECT_USER_HOME=
		    done
		    SELECT_USER=
		fi
	    done <<< ${SELECT_USERS_GROUPS//@(,|;)/$'\n'}
	done
    elif [[ ${COMMAND} == @("set-="|"set--="|"remove") ]]; then
	if [[ ${PARAM%%=*} =~ ^.*'['(.*)']' && ${BASH_REMATCH[1]} == @("*"|"**"|"/"|"//") ]]; then
	    PARAM_VALUE="${PARAM#*=}"
	    APPDESKTOP_PLACEONDESKTOP_INIT+="${PARAM_VALUE// /,}"
	fi
	local ID_GROUPS= SELECT_USER_HOME=
	for SELECT_USERS_GROUPS in "${!APPDESKTOP_PLACEONDESKTOP_INIT[@]}"; do
	    while IFS= read -r READ_USER_GROUP; do
		if [[ ${READ_USER_GROUP} == "0" ]]; then
		# Применить для всех пользователей
		    for SELECT_USER in $(getent passwd | cut -d: -f1 | xargs); do
			SELECT_USER_HOME_INIT=$(getent passwd ${SELECT_USER} | cut -d: -f6)
			remove_desktop "${SELECT_USER}" "${APPDESKTOP_PLACEONDESKTOP_INIT[${SELECT_USERS_GROUPS}]}" && rm -f ${SELECT_USER_HOME_INIT}/.config/.place_on_desktop_init
			SELECT_USER_HOME=
		    done
		    SELECT_USER=
		elif [[ ! ${READ_USER_GROUP} =~ ^'@' ]] && getent passwd "${READ_USER_GROUP}" &>/dev/null; then
		# Применить для выбанного пользователь
		    SELECT_USER=${READ_USER_GROUP}
		    SELECT_USER_HOME_INIT=$(getent passwd ${SELECT_USER} | cut -d: -f6)
		    remove_desktop "${SELECT_USER}" "${APPDESKTOP_PLACEONDESKTOP_INIT[${SELECT_USERS_GROUPS}]}" && rm -f ${SELECT_USER_HOME_INIT}/.config/.place_on_desktop_init
		    SELECT_USER=; SELECT_USER_HOME=
		elif [[ ${READ_USER_GROUP} =~ ^'@' ]] && getent group "${READ_USER_GROUP//@/}" &>/dev/null; then
		# Применить для выбраной группа
		    for SELECT_USER in $(getent group "${READ_USER_GROUP//@/}" | cut -d: -f4 | tr , ' '); do
			SELECT_USER_HOME_INIT=$(getent passwd ${SELECT_USER} | cut -d: -f6)
			remove_desktop "${SELECT_USER}" "${APPDESKTOP_PLACEONDESKTOP_INIT[${SELECT_USERS_GROUPS}]}" && rm -f ${SELECT_USER_HOME_INIT}/.config/.place_on_desktop_init
			SELECT_USER_HOME=
		    done
		    SELECT_USER=
		fi
	    done <<< ${SELECT_USERS_GROUPS//@(,|;)/$'\n'}
	done
    fi
}

################
##### MAIN #####
################

    # Если файл подключен как ресурс с функциями, то выйти
    return 0 2>/dev/null && return 0
    if [[ -z $@ ]]; then
        while read -r FUNCTION; do
            $"${FUNCTION##* }"
        done < <(declare -F | grep "declare -f exec_")
    else
	FUNCTION=
	while [[ $# -gt 0 ]]; do
	    [[ -z ${1} ]] || { declare -f "${1}" &>/dev/null && FUNCTION+="; ${1}" || FUNCTION+=" '${1}'"; }
	    shift
	done
	eval ${FUNCTION#*; }
    fi
    true