#!/usr/bin/bash
 
if [ $(/usr/bin/id -u) != 0 ]; then echo "only root can do that"; exit 2; fi

#***************************************************************************
# This file is part of the CRYPTO BONE
# File     : checkemail
# Version  : 1.4 (ALL-IN-ONE)
# License  : BSD
# Date     : Monday, 6 Feb 2023
# Contact  : Please send enquiries and bug-reports to innovation@senderek.ie
#
#
# Copyright (c) 2015-2023
#	Ralf Senderek, Ireland.  All rights reserved. (https://senderek.ie)
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
# 1. Redistributions of source code must retain the above copyright
#    notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
#    notice, this list of conditions and the following disclaimer in the
#    documentation and/or other materials provided with the distribution.
# 3. All advertising materials mentioning features or use of this software
#    must display the following acknowledgement:
#	   This product includes software developed by Ralf Senderek.
#
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND  ANY EXPRESS OR 
# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE  IMPLIED WARRANTIES 
# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  
# IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 
# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 
# PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 
# OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 
# WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 
# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 
# POSSIBILITY OF SUCH DAMAGE.
#
#****************************************************************************


if [ $# -gt 0 ]
then
     if [ $1 = "IN" ]
     then
          /bin/rm -f /dev/shm/RAM/incoming 2> /dev/null
	  sleep 1
          /usr/bin/fetchmail -f /usr/lib/cryptobone/.fetchmailrc  --bsmtp /dev/shm/RAM/incoming -p POP3 -t 30 --nosslcertck --all > /dev/shm/RAM/log  2>/dev/null
	  sleep 1
	  /bin/ls -l /dev/shm/RAM/incoming 2> /dev/null
	  if grep "unencrypted test email from root" /dev/shm/RAM/incoming 2> /dev/null
	  then
               echo "TESTMESSAGE received successfully." 
	  else
               echo "TESTMESSAGE cannot be received."
	  fi
          /bin/rm -f /dev/shm/RAM/incoming 2> /dev/null
	  /bin/cat /dev/shm/RAM/log
          /bin/rm -f /dev/shm/RAM/log 2> /dev/null
     fi
     if [ $1 = "OUT" ]
     then
          if [ $# -gt 1 ]
	  then
	       /bin/rm -f /dev/shm/RAM/outgoing /dev/shm/RAM/outgoing2 2> /dev/null
	       /bin/ls -l /var/spool/mail/root > /dev/shm/RAM/outgoing 2> /dev/null
	       SENDER="root"
               RECIPIENT=$2
               echo "unencrypted test email from root" |  /usr/sbin/sendmail -r root "$RECIPIENT"
	       sleep 4
	       /bin/ls -l /var/spool/mail/root > /dev/shm/RAM/outgoing2 2> /dev/null
	       
	       diff /dev/shm/RAM/outgoing2 /dev/shm/RAM/outgoing > /dev/null 2> /dev/null
	       if [ $? -eq 0 ] 
	       then
                    echo "TESTMAIL sent out to $RECIPIENT"
		    /bin/rm -f /dev/shm/RAM/outgoing /dev/shm/RAM/outgoing2 2> /dev/null
                    exit 0
	       else 
	            echo "FAILURE sending email OUT"
		    echo "Please look for more information in root's email"
		    exit 2
	       fi
	  else
	       echo "The email address is missing"
	  fi
     fi
else
     echo "missing parameter"
     exit 1
fi
exit 0
