#!/bin/sh
#----------------------------------------------------------------------------
# sms - send SMS with yaps from postfix and return status report via email
#
# Version 2006-05-29 by Schlomo Schapiro <mail2yaps@schlomo.schapiro.org>
#
# Last Update:  $Id: mail2sms 8643 2006-11-14 08:50:47Z jv $
#
# 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 2 of the License, or
# (at your option) any later version.
#----------------------------------------------------------------------------
phone="$(echo -n "$1" | tr -dc '0123456789' )"

sender="${2:-root}"
case "$sender" in
    *@sms*)
        sender=root
        ;;
esac

if [ ${#phone} -lt 11 -o "${phone:0:1}" != 0 ]
then
    logger -p mail.warn -t sms "Invalid phone number $phone from $sender"
    (   echo "From: smsgate"
        echo "To: $sender"
        echo "Subject: ERROR: Invalid phone number $phone"
        echo ""
    ) | /usr/sbin/sendmail -oi -t
    exit
fi

from=""
subject=""
message=""

while read -r
do
    line="$(echo "$REPLY" | tr -d '\r\n' )"
    if [ ${#line} -eq 0 -a "$message" = "" ]
    then
        message="$from $subject "
    elif [ "$message" = "" ]
    then
        # reading header
        case "$line" in
            From:*)
                from="${line#From: }"
                ;;
            Subject:*)
                subject="${line#Subject: }"
                ;;
            esac
    else
        message="$message $line"
    fi
done

message="${message:0:160}" # truncate to 160 chars

msg=$( yaps -v "$phone" "$message" 2>&1 )
if [ $? -eq 0 ]
then
    echo "Sending SMS from $sender to $phone: $message" | logger -p mail.debug -t sms
    subject="Successfully delivered your SMS to $phone"
else
    subject="ERROR report for failed SMS delivery to $phone"
fi
(   echo "From: smsgate"
    echo "To: $sender"
    echo "Subject: $subject"
    echo " "
    echo "SMS message:"
    echo "$message"
    echo " "
    echo "YAPS output:"
    echo "$msg"
) | /usr/sbin/sendmail -oi -t

exit 0