Add script 'reminder_email.sh'.
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conf/reminder_email-NAME.conf.sample
Normal file
48
conf/reminder_email-NAME.conf.sample
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# ---------------------------------------
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# - Settings for script reminder_email.sh
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# ---------------------------------------
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# MESSAGE
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#
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# The mail body of the reminder E-Mail
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#
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MESSAGE="
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** ------------------------------- **
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This is an outogenerated E-Mail
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Don't respond
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** ------------------------------- **
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"
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# SUBJECT
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#
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SUBJECT="[Erinnerung] ..."
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# DAY
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#
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# The weekday, the message should be sended
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#
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# Note: remember the locale settings on the machine
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#
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DAY="Donnerstag"
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# EMAIL_ADDRESSES
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#
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EMAIL_ADDRESSES="
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"
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# EMAIL_FROM
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#
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# Its recommend, to use an existing e-mail adress or at least
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# an existing e-mail domain here. Otherwise
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#
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EMAIL_FROM="reminder@oopen.de"
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294
reminder_email.sh
Executable file
294
reminder_email.sh
Executable file
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#!/usr/bin/env bash
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script_name="$(basename $(realpath $0))"
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working_dir="$(dirname $(realpath $0))"
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LOCK_DIR="/tmp/$(basename $0).$$.LOCK"
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conf_file="${working_dir}/conf/$1"
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# ----------
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# Base Function(s)
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# ----------
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usage() {
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[[ -n "$1" ]] && error "$1"
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[[ $terminal ]] && echo -e "
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\033[1mUsage:\033[m
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$(basename $0) <name-of-the-configuration-file>
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\033[1mDescription\033[m
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Script sends a (short) E-Mai. Recipient(s), Sender, Message and Mail-Body
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must be defined in a configuration file placed in subdirectory 'conf' of
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the directory where the script itself lives.
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\033[1mOptions\033[m
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Only an required Option is the name of the configuration file.
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\033[1mFiles\033[m
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Configuration file placet in directory '$working_dir'.
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\033[1mExample:\033[m
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Send an reminder E-Mail
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$(basename $0) reminder_email-protocol.conf
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"
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clean_up 1
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}
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clean_up() {
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# Perform program exit housekeeping
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rm -rf "$LOCK_DIR"
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blank_line
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exit $1
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}
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echononl(){
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if $terminal ; then
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echo X\\c > /tmp/shprompt$$
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if [ `wc -c /tmp/shprompt$$ | awk '{print $1}'` -eq 1 ]; then
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echo -e -n " $*\\c" 1>&2
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else
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echo -e -n " $*" 1>&2
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fi
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rm /tmp/shprompt$$
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fi
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}
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warn (){
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if $LOGGING || $terminal ; then
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echo ""
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if $terminal ; then
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echo -e " [ \033[33m\033[1mWarn\033[m ] $*"
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else
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echo " [ Warn ] $*"
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fi
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echo ""
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fi
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}
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fatal(){
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echo ""
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if $terminal ; then
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echo -e " [ \033[31m\033[1mFatal\033[m ] $*"
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else
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echo -e " [ Fatal ] $*"
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fi
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echo ""
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if $terminal ; then
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echo -e " \033[1mScript terminated\033[m.."
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else
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echo -e " Script terminated.."
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fi
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echo ""
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rm -rf $LOCK_DIR
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exit 1
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}
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error (){
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echo ""
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if $terminal ; then
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echo -e " [ \033[31m\033[1mError\033[m ] $*"
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else
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echo " [ Error ] $*"
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fi
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echo ""
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}
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echo_done() {
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if $terminal ; then
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echo -e "\033[75G[ \033[32mdone\033[m ]"
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fi
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}
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echo_failed(){
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if $terminal ; then
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echo -e "\033[75G[ \033[1;31mfailed\033[m ]"
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fi
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}
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trim() {
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local var="$*"
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var="${var#"${var%%[![:space:]]*}"}" # remove leading whitespace characters
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var="${var%"${var##*[![:space:]]}"}" # remove trailing whitespace characters
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echo -n "$var"
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}
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blank_line() {
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if $terminal ; then
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echo ""
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fi
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}
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# ----------
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# - Jobhandling
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# ----------
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# - Run 'clean_up' for signals SIGHUP SIGINT SIGTERM
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# -
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trap clean_up SIGHUP SIGINT SIGTERM
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# - Create lock directory '$LOCK_DIR"
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#
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mkdir "$LOCK_DIR"
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# ----------
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# - Some checks ..
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# ----------
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# - Running in a terminal?
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# -
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if [[ -t 1 ]] ; then
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terminal=true
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else
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terminal=false
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fi
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# ----------
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# - Read commandline parameter
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# ----------
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while getopts bh opt ; do
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case $opt in
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h) usage
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;;
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\?) usage ;;
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esac
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done
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[[ $# -ne "1" ]] && usage "Wrong number of arguments"
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# ==========
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# - Begin Main Script
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# ==========
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# ----------
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# - Headline
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# ----------
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if $terminal ; then
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echo ""
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echo -e "\033[1m----------\033[m"
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echo -e "\033[32m\033[1mRunning script \033[m\033[1m$script_name\033[32m .. \033[m"
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echo -e "\033[1m----------\033[m"
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fi
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# ----------
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# Read Configurations from $conf_file
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# ----------
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blank_line
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# - Give your default values here
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# -
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LOGGING=false
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BATCH_MODE=false
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echononl "Read in configuration file.."
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if [[ -f "$conf_file" ]]; then
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source "$conf_file"
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if [[ $? -eq 0 ]]; then
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echo_done
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else
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echo_failed
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error "Error reading configuration file '$conf_file'."
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clean_up 1
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fi
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else
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echo_failed
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fatal "No configuration file '$conf_file' present!"
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fi
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[[ -z "$(trim $EMAIL_FROM)" ]] && fatal "No sender address given!"
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[[ -z "$(trim $EMAIL_ADDRESSES)" ]] && fatal "No recipient address given!"
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[[ -z "$(trim $SUBJECT)" ]] && fatal "Missing subject!"
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[[ -z "$(trim $MESSAGE)" ]] && fatal "Missing mail body (var 'MESSAGE')!"
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if [[ "$(date +%A)" != "$DAY" ]] ; then
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warn "Wrong day
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\033[1mNo e-mail was sended.\033[m"
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clean_up 1
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fi
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# - Save content of variables 'MESSAGE' and 'SUBJECT' temporarily to
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# - a file, in order to convert them to the appropriate charset
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# -
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echo "$MESSAGE" > ${LOCK_DIR}/message_tmp.txt
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echo "$SUBJECT" > ${LOCK_DIR}/subject_tmp.txt
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# - Send E-Mail using ISO-8859-15 Charset
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# -
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#iconv -t ISO-8859-15 -o ${LOCK_DIR}/subject_tmp_ISO-8859-15.txt ${LOCK_DIR}/subject_tmp.txt
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#iconv -t ISO-8859-15 -o ${LOCK_DIR}/message_tmp_ISO-8859-15.txt ${LOCK_DIR}/message_tmp.txt
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#ENCODED_MESSAGE="$(cat ${LOCK_DIR}/message_tmp_ISO-8859-15.txt | base64)"
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#ENCODED_SUBJECT="=?iso-8859-15?B?$(cat ${LOCK_DIR}/subject_tmp_ISO-8859-15.txt | base64 --wrap=0)?="
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#content_type='Content-Type: text/plain;\n charset="iso-8859-15"'
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# - Send E-Mail using UTF-8 Charset
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# -
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iconv -t UTF8 -o ${LOCK_DIR}/subject_tmp_UTF8.txt ${LOCK_DIR}/subject_tmp.txt
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iconv -t UTF8 -o ${LOCK_DIR}/message_tmp_UTF8.txt ${LOCK_DIR}/message_tmp.txt
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ENCODED_SUBJECT="=?utf-8?B?$(cat ${LOCK_DIR}/subject_tmp_UTF8.txt | base64 --wrap=0)?="
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ENCODED_MESSAGE="$(cat ${LOCK_DIR}/message_tmp_UTF8.txt | base64)"
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content_type='Content-Type: text/plain;\n charset="utf-8"'
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# - If you know the Charset of the String variable 'SUBJECT' and 'MESSAGE', and
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# - saying it is 'UTF-8', then you can user these variables directly:
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# -
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#ENCODED_SUBJECT="=?utf-8?B?$(base64 --wrap=0 <<< "${SUBJECT}")?="
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#ENCODED_MESSAGE="$(base64 <<< "${MESSAGE}")"
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#content_type='Content-Type: text/plain;\n charset="utf-8"'
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transfer_encoding='Content-Transfer-Encoding: base64'
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content_disposition='Content-Disposition: inline'
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blank_line
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for EMAIL_TO in $EMAIL_ADDRESSES ; do
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echononl "Send reminder e-mail to $EMAIL_TO .."
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echo -e "From: ${EMAIL_FROM}
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To: ${EMAIL_TO}
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Subject: ${ENCODED_SUBJECT}
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${content_type}
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${transfer_encoding}
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${content_disposition}
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$ENCODED_MESSAGE
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" | /usr/sbin/sendmail -F "$(whoami)" -f $EMAIL_FROM $EMAIL_TO
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if [[ $? -ne 0 ]]; then
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echo_failed
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else
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echo_done
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fi
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done
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blank_line
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clean_up 0
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