| #!/bin/sh |
| # send mail script for banIP notifications |
| # Copyright (c) 2020-2021 Dirk Brenken (dev@brenken.org) |
| # This is free software, licensed under the GNU General Public License v3. |
| |
| # (s)hellcheck exceptions |
| # shellcheck disable=1091,3040 |
| |
| # Please note: you have to setup the package 'msmtp' before using this script |
| |
| export LC_ALL=C |
| export PATH="/usr/sbin:/usr/bin:/sbin:/bin" |
| set -o pipefail |
| |
| . "/lib/functions.sh" |
| ban_debug="$(uci_get banip global ban_debug "0")" |
| ban_loglimit="$(uci_get banip global ban_loglimit "100")" |
| ban_mailsender="$(uci_get banip global ban_mailsender "no-reply@banIP")" |
| ban_mailreceiver="$(uci_get banip global ban_mailreceiver)" |
| ban_mailtopic="$(uci_get banip global ban_mailtopic "banIP notification")" |
| ban_mailprofile="$(uci_get banip global ban_mailprofile "ban_notify")" |
| |
| ban_mail="$(command -v msmtp)" |
| ban_logger="$(command -v logger)" |
| ban_logread="$(command -v logread)" |
| |
| if [ -z "${ban_mailreceiver}" ]; then |
| f_log "err" "please set the mail receiver with the 'ban_mailreceiver' option" |
| exit 1 |
| fi |
| |
| if [ "${ban_debug}" = "1" ]; then |
| msmtp_debug="--debug" |
| fi |
| |
| ban_mailhead="From: ${ban_mailsender}\nTo: ${ban_mailreceiver}\nSubject: ${ban_mailtopic}\nReply-to: ${ban_mailsender}\nMime-Version: 1.0\nContent-Type: text/html;charset=utf-8\nContent-Disposition: inline\n\n" |
| |
| # info preparation |
| # |
| sys_info="$( |
| strings /etc/banner 2>/dev/null |
| ubus call system board | awk 'BEGIN{FS="[{}\"]"}{if($2=="kernel"||$2=="hostname"||$2=="system"||$2=="model"||$2=="description")printf " + %-12s: %s\n",$2,$4}' |
| )" |
| ban_info="$(/etc/init.d/banip "status" 2>/dev/null)" |
| rep_info="${1}" |
| log_info="$("${ban_logread}" -l "${ban_loglimit}" -e "banIP-" 2>/dev/null | awk '{NR=1;max=120;if(length($0)>max+1)while($0){if(NR==1){print substr($0,1,max)}else{print substr($0,1,max)}{$0=substr($0,max+1);NR=NR+1}}else print}')" |
| |
| # mail body |
| # |
| ban_mailtext="<html><body><pre style='display:block;font-family:monospace;font-size:1rem;padding:20;background-color:#f3eee5;white-space:pre'>" |
| ban_mailtext="${ban_mailtext}\n<strong>++\n++ System Information ++\n++</strong>\n${sys_info}" |
| ban_mailtext="${ban_mailtext}\n\n<strong>++\n++ banIP Status ++\n++</strong>\n${ban_info}" |
| if [ -n "${rep_info}" ]; then |
| ban_mailtext="${ban_mailtext}\n\n<strong>++\n++ banIP Report ++\n++</strong>\n${rep_info}" |
| fi |
| ban_mailtext="${ban_mailtext}\n\n<strong>++\n++ Logfile Information ++\n++</strong>\n${log_info}" |
| ban_mailtext="${ban_mailtext}</pre></body></html>" |
| |
| # send mail |
| # |
| printf "%b" "${ban_mailhead}${ban_mailtext}" 2>/dev/null | "${ban_mail}" ${msmtp_debug} -a "${ban_mailprofile}" "${ban_mailreceiver}" >/dev/null 2>&1 |
| "${ban_logger}" -p "info" -t "banIP-mail [${$}]" "mail sent to '${ban_mailreceiver}' with rc '${?}'" 2>/dev/null |