rc.mailMyIp

#!/bin/bash
#
# /etc/rc.d/rc.mailMyIp
#
# start/check the mailMyIp daemon
#
# To make mailMyIp start automatically at boot, make this
# file executable: chmod 755 /etc/rc.d/rc.mailMyIp
# and add this lines to /etc/rc.d/rc.local
#
# if [ -x /etc/rc.d/rc.mailMyIp ]; then
#  . /etc/rc.d/rc.mailMyIp start
# fi
#
# Written by movebo@linux.ime.usp.br and tested on Slackware 13.1
#

###############
# DEFINITIONS #
###############

FILE=/tmp/.mailMyIP
LOG=/var/log/mailMyIp.log
DATE=`date +"%F %H:%M:%S"`
ADDRS="zeh@gmail.com"
ADDRS2="destino@gmail.com"
MSMTP=`which msmtp`
MSMTPRC=/home/zeh/.msmtprc
PING=`which ping`
SED=`which sed`
PRINTF=`which printf`
IFCONFIG=`which ifconfig`
NAVI_IP=/home/zeh/bin/naviip

####################
# FUNCTIONS: BEGIN #
####################

MSG() {
        BODY="Subject: NAVI has booted, check your IP\nDate: $DATE\n\nNAVI was b
ooted at $DATE\nNAVI IP=$IP\n"
        $PRINTF "%b" "$BODY" > $FILE
        $PRINTF "%b" "$BODY" | $MSMTP -C $MSMTPRC $ADDRS
        $PRINTF "%b" "NAVI has booted at $DATE with IP: $IP\n" >> $LOG
}

mailMyIp() {
        if [ -f $FILE ]; then
                OLDIP=`cat $FILE | sed '/IP=/!d;s/.*=//g'`
                [ "$IP" != "$OLDIP" ] && MSG
        else
                MSG
        fi
}

OK() {
        echo -e "\\033[60G[  \e[32;1mOK\e[0m  ]"
}

FAIL() {
        echo -e "\\033[60G[ \e[31;1mFAIL\e[0m ]"
}

GET_IP() {
        IP=`curl -s http://www.whatismyip.com/automation/n09230945.asp`
        echo -n $IP
}

TEST_INET() {
        ETH0=`$IFCONFIG eth0 | sed '/inet\ /!d;s/.*r://g;s/\..*$//g'`
        [ -z "$ETH0" ] && ETH=`$IFCONFIG eth1 | sed '/inet\ /!d;s/.*r://g;s/\..*
$//g'` || ETH=$ETH0

        if [ $ETH -ne 192 ]; then
                echo "Network not available"
                exit -1
        else
                printf "%b" "Testing your Internet Connection:"
                PING_COUNT=`$PING -l3 -w1 -c3 200.160.4.2 2> /dev/null | $SED '/
rec/!d;s/.*ted,\ //g;s/\ .*//g'`
        fi
}

##################
# FUNCTIONS: END #
##################


case "$1" in
'start')
        TEST_INET

        if [ $PING_COUNT -eq 0 ]; then
                FAIL
        else
                OK
                echo -n "   Retrieving external IP:   "
                GET_IP

                if [ -n "$IP" ]; then
                        OK
                        echo -en "   Retrieving IP from gmail: "

                        if [ -n "$NAVI_IP" ]; then
                                echo -n "$NAVI_IP"
                                OK
                        else
                                FAIL
                        fi

                        if [ "$IP" != "$NAVI_IP" ]; then
                                echo -en "   Mailing the new IP to $ADDRS"
                                MSG
                                OK
                        else
                                echo "   Nothing to do."
                        fi
                else
                        FAIL
                fi
        fi
        ;;
'check')
        TEST_INET > /dev/null
        if [ $PING_COUNT -ne 0 ]; then
                GET_IP >> /dev/null
                if [ -n "$IP" ]; then
                        [ "$IP" != "$NAVI_IP" ] && MSG
                fi
        fi
        ;;
*)
        echo "usage $0 [start|check]"
esac