portainer-devtool/custom_tls_cert_gen/generate-custom-tls.sh

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#!/bin/bash
set -eu
ERROR_COLOR='\033[0;31m';
HIGHLIGHT_COLOR='\033[0;32m';
INPUT_COLOR='\033[0;33m';
NO_COLOR='\033[0m';
function print_highlight() {
printf "${HIGHLIGHT_COLOR}$1${NO_COLOR}\n"
}
function print_error() {
printf "${ERROR_COLOR}$1${NO_COLOR}\n"
}
function input() {
read -p "$(echo -e ${INPUT_COLOR}$1 ${NO_COLOR})" $2
}
input "Specify the output path:" OUTPUT_PATH
if [ -z "$OUTPUT_PATH" ]; then
OUTPUT_PATH="$(pwd)/output"
if [[ ! -e "$OUTPUT_PATH" ]]; then
mkdir "$OUTPUT_PATH"
fi
fi
if [[ ! -e "$OUTPUT_PATH" ]]; then
print_error "${OUTPUT_PATH} doesn't exist."
exit;
fi
input "Do you have cfssl installed?(y/n): " is_cfssl_installed
CFSSLEXE=${OUTPUT_PATH}/cfssl
CFSSLJSONEXE=${OUTPUT_PATH}/cfssljson
if [[ "${is_cfssl_installed}" == "y" || "${is_cfssl_installed}" == "Y" ]]; then
input "Specify the path where the cfssl and cfssljson are placed: " TOOL_PATH
CFSSLEXE=${TOOL_PATH}/cfssl
CFSSLJSONEXE=${TOOL_PATH}/cfssljson
print_highlight "Your cfssl binary path is ${CFSSLEXE}"
if [ ! -e "$CFSSLEXE" ]; then
print_error "no cfssl found."
exit;
fi
if [ ! -e "$CFSSLJSONEXE" ]; then
print_error "no cfssljson found."
exit;
fi
else
# Download the cfssl for users
input "Specify your platform(darwin/linux/windows): " PLATFORM
if [ -z "$PLATFORM" ]; then
print_error "Platform must be provided."
exit;
fi
print_highlight "Only amd64 is supported"
wget "https://github.com/cloudflare/cfssl/releases/download/v1.6.1/cfssl_1.6.1_${PLATFORM}_amd64" -O "${OUTPUT_PATH}/cfssl"
chmod +x "${OUTPUT_PATH}/cfssl"
wget "https://github.com/cloudflare/cfssl/releases/download/v1.6.1/cfssljson_1.6.1_${PLATFORM}_amd64" -O "${OUTPUT_PATH}/cfssljson"
chmod +x "${OUTPUT_PATH}/cfssljson"
print_highlight "Download the cfssl bundle successfully."
fi
cd $OUTPUT_PATH
input "Give a name to the CA certificate: " CA_CERT_NAME
${CFSSLEXE} print-defaults csr | ${CFSSLEXE} gencert -initca - | ${CFSSLJSONEXE} -bare ${CA_CERT_NAME}-ca
CONFIG_CFSSL_JSON=${OUTPUT_PATH}/cfssl.json
cat <<EOF >> ${CONFIG_CFSSL_JSON}
{
"signing": {
"default": {
"expiry": "87600h",
"usages": ["signing", "key encipherment", "server auth"]
}
}
}
EOF
input "Give a name to the certificate: " CERT_NAME
input "Input the hostname(example.org,127.0.0.1): " CERT_HOSTNAME
echo '{}' | ${CFSSLEXE} gencert -ca=ldap-ca.pem -ca-key=ldap-ca-key.pem -config=${CONFIG_CFSSL_JSON} \
-hostname="${CERT_HOSTNAME}" - | ${CFSSLJSONEXE} -bare ${CERT_NAME}
print_highlight "The custom TLS certificates are successfully generated in the path ${OUTPUT_PATH}."