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#!/bin/sh
#
# adblock send mail script for mstmp
# written by Dirk Brenken (dev@brenken.org)
# Please note: you have to install and configure the package 'mstmp' 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 <http://www.gnu.org/licenses/>.
LC_ALL=C
PATH="/usr/sbin:/usr/bin:/sbin:/bin"
mail_ver="1.0.2"
mail_daemon="$(command -v msmtp)"
mail_profile="adb_notify"
#mail_debug="--debug"
mail_rc=1
# mail daemon check
#
if [ ! -x "${mail_daemon}" ]
then
mail_daemon="$(command -v sendmail)"
fi
# info preparation
#
sys_info="$(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),"&#8629;"} 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),"&#8629;"} else {print " ",substr($0,1,max)}{$0=substr($0,max+1);NR=NR+1}}else print}')"
fi
# mail header
#
mail_sender="no-reply@adblock"
mail_receiver="!!!ChangeMe!!!"
mail_topic="adblock notification"
mail_head="From: ${mail_sender}\nTo: ${mail_receiver}\nSubject: ${mail_topic}\nReply-to: ${mail_sender}\nMime-Version: 1.0\nContent-Type: text/html\nContent-Disposition: inline\n\n"
# mail body
#
mail_text="<html><body><pre style='display:block;font-family:monospace;font-size:1rem;padding:20;background-color:#f3eee5;white-space:pre'>"
mail_text="${mail_text}\n<strong>++\n++ System Information ++\n++</strong>\n${sys_info}"
mail_text="${mail_text}\n\n<strong>++\n++ Adblock Information ++\n++</strong>\n${adb_info}"
mail_text="${mail_text}\n\n<strong>++\n++ Logfile Information ++\n++</strong>\n${log_info}"
mail_text="${mail_text}</pre></body></html>"
# send mail
#
if [ -x "${mail_daemon}" ]
then
printf "%b" "${mail_head}${mail_text}" 2>/dev/null | "${mail_daemon}" ${mail_debug} -a "${mail_profile}" "${mail_receiver}" >/dev/null 2>&1
mail_rc=${?}
logger -p "info" -t "adblock-notify-[${mail_ver}]" "mail sent to '${mail_receiver}' with rc '${mail_rc}'"
else
logger -p "err" -t "adblock-notify-[${mail_ver}]" "msmtp mail daemon not found"
fi
exit ${mail_rc}