#!/bin/bash

# File: mail_check-led.sh

# check remote email accounts via SSL/TLS, turn on keyboard LED's if new mail
# Important: this script is not for standard POP over port 110

# turn on all 3 keyboard LED's if there is any mail
# turn them all off when no mail

# run from cron every so often.
# I run this from a headless Artigo (pico) box when my main box is off/asleep

# Pete Nesbitt 2012


##########################
#   !!! IMPORTANT !!!
#
#  you will need to edit lines indicated below (near lines 42 & 71).
##########################

#####################################################################
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.
#####################################################################


###############
# Vars

# EDIT the next 3 items!
   # Use space separated list for more than one email account
   # example:
    # SERVER=(popserver.domain1.com mail.myisp.com pop.gmail.com)
    # ACCOUNT=(emailname@domain1.com user1@myisp.com mymail@gmail.com)
    # PASSWORD=(password1 password2 password3)
SERVER=()
ACCOUNT=()
PASSWORD=()


# file to save status data in
TEMP_FILE="/tmp/mailtemp.txt"

# need to send led flags via a real console. We can use this to fake it.
CONSOLE="/dev/console"

# accounts are all ssl port 995 so can use openssl cmd
PORT=995

NUM_MESSAGES=0 # initial value

############
# check status of each account 

for ACCT in `seq 1 ${#SERVER[*]}`
 do
 # diff servers have diff sequesnces :(

 # EDIT STRING_1 & STRING_2 as needed
 # use the section following this 'if statement' as a guide or
 #  telnet to the server in order to see the interaction sequence.
 # may need to add one or more sections. Use 'elif' (commented out) below

 if [ ${ACCT} -eq 1 ];then  #first server (strings work @ webnames.ca)
    STRING_1="sleep 2"
    STRING_2="+OK [0-9]\+ messages ([0-9]\+ bytes)"

# elif [ ${ACCT} -eq 2 ];then  #2 is 2nd in server list
#   STRING_1=""
#   STRING_2=""

 else         # this works for gmail and others
    STRING_1='expect "+OK Welcome."'
    STRING_2="+OK [0-9]\+ [0-9]\+"
 fi

 let NUM=${ACCT}-1
 expect << EOPOP  > ${TEMP_FILE}
 spawn openssl s_client -connect ${SERVER[${NUM}]}:${PORT}
 expect "+OK" 
 send "USER ${ACCOUNT[${NUM}]}\r"
 expect "+OK"
 send "PASS ${PASSWORD[${NUM}]}\r"
 ${STRING_1}
 send "stat\r"
 expect "+OK "
 send "quit\r"
EOPOP

 let NUM_MESSAGES=${NUM_MESSAGES}+`grep -o "${STRING_2}" ${TEMP_FILE}|cut -d' ' -f2`
 done

############

# check status 

 if [ ${NUM_MESSAGES} -ne 0 ];then
   setleds -D +num     <  ${CONSOLE}
   setleds -D +caps    <  ${CONSOLE}
   setleds -D +scroll  <  ${CONSOLE}
   
 else
   setleds -D -num     <  ${CONSOLE}
   setleds -D -caps    <  ${CONSOLE}
   setleds -D -scroll  <  ${CONSOLE}
 fi

rm ${TEMP_FILE}


exit
#EOF