integrate sshpass and keychain

sp.sh

U=$(echo "$1" | cut -d@ -f1 | cut -d: -f1)
HOSTNAME=$(echo "$1" | cut -d@ -f2 | cut -d: -f1)
PORT=$(echo "$1" | cut -d: -f2)

if [[ $U = $1 ]]; then #no user specified
	U=$(USER)
fi
if [[ $PORT = $1 ]]; then #no port specified
	PORT="22"
fi	

PASSWD=$(security find-generic-password -l $HOSTNAME -g 2>&1 1>/dev/null | cut -d'"' -f2)
if [[ ! `echo $PASSWD | grep 'The specified item could not be found in the keychain.'` = '' ]]; then
	echo "Could not found password for host $HOSTNAME in the keychain"
	echo -n "Password:"
	read -s password
	
	security add-generic-password -a $U -l $HOSTNAME -s ssh -w $password
	PASSWD=$password
	echo "Password for $HOSTNAME succesfully added to keychain."
fi

sshpass -p$PASSWD ssh $1