Shell Programming and Scripting

#!/bin/bash
echo "Starting server stat..."

ftp_func2 ()
{
if  echo $a | grep 21 > /dev/null
then
	echo "ftp is running"
else
	echo "ftp is not running"
fi

}

ssh_func2 ()
{
if echo $a | grep 22 > /dev/null
then
	echo "ssh is running"
else
	echo "ssh is not running"
fi

}

fake_func2 ()
{
if echo $a | grep testing > /dev/null
then
	echo "fake service running" # shouldnt be
else
	echo "fake service not running"
fi

}

telnet_func2 ()
{
if echo $a | grep 23 > /dev/null
then
	echo "telnet is running"
else
	echo "telnet is not running"
fi

}

smtp_func2 ()
{
if echo $a | grep 25 > /dev/null
then
	echo "smtp is running"
else
	echo "smtp is not running"
fi

}

http_func2 ()
{
if echo $a | grep 80 > /dev/null
then
	echo "http is running"
else
	echo "http is not running"
fi

}

pop_func2 () # not 2, not 4, but 3
{
if echo $a | grep 110 > /dev/null
then
	echo "pop3 is running"
else
	echo "pop3 is not running"
fi

}
non_interactivemode_func ()
{
	ftp_func2
	ssh_func2
	fake_func2 # this is just to make me feel better
	telnet_func2
	smtp_func2
	http_func2
	pop_func2
}

version_func ()
{
echo "Serverstat 0.9"
echo "Copyright 2003 Joseph Oldak."
echo "This is free software; There is NO warranty; not even for MERCHANTABILITY or"
echo "FITNESS FOR A PARTICULAR PURPOSE.		-taken from GNU grep -V"
echo "This script was written soley for my own use and is extremely simple."
echo "It is more of an exercise for my self to learn BASH shell scripting."

}

help_func ()
{
echo "Serverstat 0.9" 
echo "This script checks to see what services are running on a given host."
echo "You must run serverstat with the -s option to tell it what host to scan."
echo "For now, this script uses nmap, however in the future it wont require it."
echo "The options i or n are required, one or the other."
echo "Example: ./serverstat -si somehostname.com"
echo "-s	Specify hostname, either in dotted quad, or a FQDN."
echo "-i	Interactive mode, select what to check is running."
echo "-n	Non-Interactive mode, scans everything. Mainly for use in other scripts"
echo "-v	Output version information."
echo "-h	Output usage (this help message)."

}
interactivemode_func ()
{
clear

echo "Select which services you wish to check status of  : "; echo $hostname2
echo "1. ftp"; echo "$b"
echo "2. ssh"; echo "$c"
echo "3. telnet"; echo "$e"
echo "4. smtp"; echo "$f"
echo "5. http"; echo "$g"
echo "6. pop3"; echo "$p"
echo "7. exit server status"
echo "select from 1-7"

read option_number

case "$option_number" in

1 )
ftp_func
;;

2 )
ssh_func
;;

3 )
telnet_func
;;

4 )
smtp_func
;;

5 )
http_func
;;

6 )
pop_func
;;

7 )
echo " Quiting ..."
exit 0
;;

* )
echo "please select 1-7"
interactivemode_func
;;
esac
}


main () 
{
NO_ARGS=0
E_OPTERROR=65

if [ $# -eq "$NO_ARGS" ] # should check for no arguments
then
	echo "Usage: `basename $0` -s<OPTIONS> <HOSTNAME> "
	echo "You must specify interactive, or non interactive mode for now"
	echo "Try './serverstatus -h' for more information."
	exit $E_OPTERROR
fi

while getopts ":sinvh" Option
do
	case $Option in

		s )
			hostname=`echo $@`
			hostname2=`echo $hostname|awk '{print $2}'`
			echo $hostname2
			a=`nmap $hostname2`

		;;

		i )
			interactivemode_func
		;;

		n )
			non_interactivemode_func
		;;

		v )
			version_func
		;;

		h )
			help_func
		;;

		* )
			echo "Unimplemented option chosen"
		;;
	esac
done

shift $(($OPTIND - 1))

}

# ok this is retarded ...
ftp_func ()
{
if  echo $a | grep 21 > /dev/null
then
	echo "ftp is running"
	b=`echo ftp is running`
else
	echo "ftp is not running"
	b=`echo ftp is not running`
fi
interactivemode_func
}

ssh_func ()
{
if echo $a | grep 22 > /dev/null
then
	echo "ssh is running"
	c=`echo ssh is running`
else
	echo "ssh is not running"
	c=`echo ssh is not running`
fi
interactivemode_func
}

fake_func ()
{
if echo $a | grep testing > /dev/null
then
	echo "fake service running" # shouldnt be
	d=`echo fake service is running`
else
	echo "fake service not running"
	d=`echo fake service is not running`
fi
interactivemode_func
}

telnet_func ()
{
if echo $a | grep 23 > /dev/null
then
	echo "telnet is running"
	e=`echo telnet is running`
else
	echo "telnet is not running"
	e=`echo telnet is not running`
fi
interactivemode_func
}

smtp_func ()
{
if echo $a | grep 25 > /dev/null
then
	echo "smtp is running"
	f=`echo smtp is running`
else
	echo "smtp is not running"
	f=`echo smtp is not running`
fi
interactivemode_func
}

http_func ()
{
if echo $a | grep 80 > /dev/null
then
	echo "http is running"
	g=`echo http is running`
else
	echo "http is not running"
	g=`echo http is not running`
fi
interactivemode_func
}

pop_func () # not 2, not 4, but 3
{
if echo $a | grep 110 > /dev/null
then
	echo "pop3 is running"
	p=`echo pop3 is running`
else
	echo "pop3 is not running"
	p=`echo pop3 is not running`
fi
interactivemode_func
}

main "$@"