net/adblock/files/adblock.mail

   1 #!/bin/sh
   2 # send mail script for adblock notifications
   3 # Copyright (c) 2015-2020 Dirk Brenken (dev@brenken.org)
   4 # This is free software, licensed under the GNU General Public License v3.
   5
   6 # Please note: you have to manually install and configure the package 'msmtp' before using this script
   7
   8 LC_ALL=C
   9 PATH="/usr/sbin:/usr/bin:/sbin:/bin"
  10
  11 if [ -r "/lib/functions.sh" ]
  12 then
  13         . "/lib/functions.sh"
  14         adb_debug="$(uci_get adblock global adb_debug "0")"
  15         adb_mailsender="$(uci_get adblock global adb_mailsender "no-reply@adblock")"
  16         adb_mailreceiver="$(uci_get adblock global adb_mailreceiver)"
  17         adb_mailtopic="$(uci_get adblock global adb_mailtopic "adblock notification")"
  18         adb_mailprofile="$(uci_get adblock global adb_mailprofile "adb_notify")"
  19 fi
  20 adb_ver="${1}"
  21 adb_mail="$(command -v msmtp)"
  22 adb_logger="$(command -v logger)"
  23 adb_logread="$(command -v logread)"
  24 adb_rc=1
  25
  26 f_log()
  27 {
  28         local class="${1}" log_msg="${2}"
  29
  30         if [ -x "${adb_logger}" ]
  31         then
  32                 "${adb_logger}" -p "${class}" -t "adblock-${adb_ver}[${$}]" "${log_msg}"
  33         else
  34                 printf "%s %s %s\\n" "${class}" "adblock-${adb_ver}[${$}]" "${log_msg}"
  35         fi
  36 }
  37
  38 if [ -z "${adb_mailreceiver}" ]
  39 then
  40         f_log "err" "please set the mail receiver with the 'adb_mailreceiver' option"
  41         exit ${adb_rc}
  42 fi
  43
  44 if [ "${adb_debug}" -eq 1 ]
  45 then
  46         debug="--debug"
  47 fi
  48
  49 adb_mailhead="From: ${adb_mailsender}\\nTo: ${adb_mailreceiver}\\nSubject: ${adb_mailtopic}\\nReply-to: ${adb_mailsender}\\nMime-Version: 1.0\\nContent-Type: text/html\\nContent-Disposition: inline\\n\\n"
  50
  51 # info preparation
  52 #
  53 sys_info="$(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 '/^$/d' 2>/dev/null)"
  54 adb_info="$(/etc/init.d/adblock status 2>/dev/null)"
  55 if [ -f "/var/log/messages" ]
  56 then
  57         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($0,max+1);NR=NR+1}}else print}' /var/log/messages)"
  58 elif [ -x "${adb_logread}" ]
  59 then
  60         log_info="$("${adb_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($0,max+1);NR=NR+1}}else print}')"
  61 fi
  62
  63 # mail body
  64 #
  65 adb_mailtext="<html><body><pre style='display:block;font-family:monospace;font-size:1rem;padding:20;background-color:#f3eee5;white-space:pre'>"
  66 adb_mailtext="${adb_mailtext}\\n<strong>++\\n++ System Information ++\\n++</strong>\\n${sys_info}"
  67 adb_mailtext="${adb_mailtext}\\n\\n<strong>++\\n++ Adblock Information ++\\n++</strong>\\n${adb_info}"
  68 adb_mailtext="${adb_mailtext}\\n\\n<strong>++\\n++ Logfile Information ++\\n++</strong>\\n${log_info}"
  69 adb_mailtext="${adb_mailtext}</pre></body></html>"
  70
  71 # send mail
  72 #
  73 if [ -x "${adb_mail}" ]
  74 then
  75         printf "%b" "${adb_mailhead}${adb_mailtext}" 2>/dev/null | "${adb_mail}" ${debug} -a "${adb_mailprofile}" "${adb_mailreceiver}" >/dev/null 2>&1
  76         adb_rc=${?}
  77         f_log "info" "mail sent to '${adb_mailreceiver}' with rc '${adb_rc}'"
  78 else
  79         f_log "err" "msmtp mail daemon not found"
  80 fi
  81 exit ${adb_rc}