make_certificate_file

#! /bin/bash

globus_exists(){
    echo "Check for the $HOME/.globus folder ... "
    if [ ! -d "$HOME/.globus" ]; then
		echo -e "\tCouldn't find the ${HOME}/.globus folder."
		return 0
    fi
    return 1
}

certs_exist(){
	cert_dir=$(dirname "${1}")
	cert_file=$(basename "${1}")
	echo "Check for $cert_file in $cert_dir ... "
	if [ ! -e "${1}" ]; then
		echo -e "\tUnable to find the file ${1}."
		echo -e "\tNOTE: The home character \"~\" is not expanded and must not be used."
		return 0
	fi

	if [ ! -e "${2}" ]; then
		echo -e"\tUnable to find the file ${2}."
        echo -e "\tNOTE: The home character \"~\" is not expanded and must not be used."
        return 0
    fi
	
	echo -e "\tFound both the usercert and userkey files."
	return 1
}

read -d '' USAGE <<EOF
\\t\\t\\t=================================================================================
\\t\\t\\tThis script checks if you have globus certificates (defaults: usercert.pem and
\\t\\t\\tuserkey.pem). If you do it will create a p12 file based on them (default: mycert.p12)
\\t\\t\\t=================================================================================\\n\\n
EOF

echo -e "$USAGE"

if globus_exists; then
	exit 1
fi

usercert='${HOME}/.globus/usercert.pem'
userkey='${HOME}/.globus/userkey.pem'
read -e -p "Enter the full path of the usercert file: " -i "${HOME}/.globus/usercert.pem" input
usercert="${input:-$name}"
read -e -p "Enter the full path of the userkey file: " -i "${HOME}/.globus/userkey.pem" input
userkey="${input:-$name}"
if certs_exist "$usercert" "$userkey"; then
	exit 2
fi

mycert="${HOME}/.globus/mycert.p12"
desc="my browser cert for <year>"
read -e -p "Enter the output path and name to the p12 certificate file: " -i "${HOME}/.globus/mycert.p12" input
mycert="${input:-$name}"
read -e -p "Enter a description of this certificate file: " -i "my browser cert for <year>" input
desc="${input:-$name}"
if [ ! -e "$(dirname "${mycert}")" ]; then
	echo -e "\tUnable to find the output path for the certificate file."
	exit 3
fi

echo -e "Running the command \`openssl pkcs12 -export -in ${usercert} -inkey ${userkey} -out ${mycert} -name \"${desc}\"\`"
openssl pkcs12 -export -in "${usercert}" -inkey "${userkey}" -out "${mycert}" -name "${desc}"
res=$?
if [ "$res" = "0" ]; then

    echo -e "\nAll Done..."
    echo -e "You can now import the file ${mycert} into your browser.\n"
else
    echo -e "\nThere were problems creating the file ${mycert}."
    echo -e "Please, check the directions at "
    echo -e " https://twiki.cern.ch/twiki/bin/view/CMSPublic/WorkBookStartingGrid#ObtainingCert"
    echo -e " and try the process manually."
fi

exit ${res}