#!/bin/sh
# send mail script for adblock notifications
# written by Dirk Brenken (dev@brenken.org)
# Please note: you have to manually install and configure the package 'msmtp' before using this script
# This is free software, licensed under the GNU General Public License v3.
# You should have received a copy of the GNU General Public License
# along with this program. If not, see .
LC_ALL=C
PATH="/usr/sbin:/usr/bin:/sbin:/bin"
if [ -r "/lib/functions.sh" ]
then
. "/lib/functions.sh"
adb_debug="$(uci_get adblock extra adb_debug "0")"
adb_msender="$(uci_get adblock extra adb_msender "no-reply@adblock")"
adb_mreceiver="$(uci_get adblock extra adb_mreceiver)"
adb_mtopic="$(uci_get adblock extra adb_mtopic "adblock notification")"
adb_mprofile="$(uci_get adblock extra adb_mprofile "adb_notify")"
fi
adb_ver="${1}"
adb_mail="$(command -v msmtp)"
adb_rc=1
if [ "${adb_debug}" -eq 1 ]
then
debug="--debug"
fi
# mail header & receiver check
#
if [ -z "${adb_mreceiver}" ]
then
logger -p "err" -t "adblock-${adb_ver}[${$}]" "please set the mail receiver with the 'adb_mreceiver' option"
exit ${adb_rc}
fi
adb_mhead="From: ${adb_msender}\\nTo: ${adb_mreceiver}\\nSubject: ${adb_mtopic}\\nReply-to: ${adb_msender}\\nMime-Version: 1.0\\nContent-Type: text/html\\nContent-Disposition: inline\\n\\n"
# info preparation
#
sys_info="$(strings /etc/banner 2>/dev/null; ubus call system board | sed -e 's/\"release\": {//' | sed -e 's/^[ \t]*//' | sed -e 's/[{}\",]//g' | sed -e 's/[ ]/ \t/' | sed '/^$/d' 2>/dev/null)"
adb_info="$(/etc/init.d/adblock status 2>/dev/null)"
if [ -f "/var/log/messages" ]
then
log_info="$(awk '/adblock-/{NR=1;max=79;if(length($0)>max+1)while($0){if(NR==1){print substr($0,1,max),"↵"} else {print " ",substr($0,1,max)}{$0=substr($0,max+1);NR=NR+1}}else print}' /var/log/messages)"
else
log_info="$(logread -e "adblock-" | awk '{NR=1;max=79;if(length($0)>max+1)while($0){if(NR==1){print substr($0,1,max),"↵"} else {print " ",substr($0,1,max)}{$0=substr($0,max+1);NR=NR+1}}else print}')"
fi
# mail body
#
adb_mtext=""
adb_mtext="${adb_mtext}\\n++\\n++ System Information ++\\n++\\n${sys_info}"
adb_mtext="${adb_mtext}\\n\\n++\\n++ Adblock Information ++\\n++\\n${adb_info}"
adb_mtext="${adb_mtext}\\n\\n++\\n++ Logfile Information ++\\n++\\n${log_info}"
adb_mtext="${adb_mtext}"
# send mail
#
if [ -x "${adb_mail}" ]
then
printf "%b" "${adb_mhead}${adb_mtext}" 2>/dev/null | "${adb_mail}" ${debug} -a "${adb_mprofile}" "${adb_mreceiver}" >/dev/null 2>&1
adb_rc=${?}
logger -p "info" -t "adblock-${adb_ver}[${$}]" "mail sent to '${adb_mreceiver}' with rc '${adb_rc}'"
else
logger -p "err" -t "adblock-${adb_ver}[${$}]" "msmtp mail daemon not found"
fi
exit ${adb_rc}