#/bin/bash
# ------------------------------------------
# Filename: 一键生成SSL证书.sh
# Version: 1.1
# Date: 2023/09/24
# Author: tanghao
# Email: 2826588067@qq.com
# Description: This is the first script
# Copyright: 2023 tanghao
# License: GPL
# ------------------------------------------
DOMAIN=stangj.org
## 证书适用IP
IP=$(ip a | sed -nr '/global/p' | awk -F '[ /]+' '{print $3}' | head -1)
DOMAIN_EXT=$IP
DATE=3650
echo 'ip为 '$IP
rm -rf ${DOMAIN} ca.key ca.csr ca.crt
mkdir ${DOMAIN}
# 生成CA根证书
## 准备ca配置文件，得到ca.conf
cat > ${DOMAIN}/ca.conf << EOF
[ req ]
default_bits = 4096
distinguished_name = req_distinguished_name
[ req_distinguished_name ]
countryName = Country Name (2 letter code)
countryName_default = CN
stateOrProvinceName = State or Province Name (full name)
stateOrProvinceName_default = BeiJing
localityName = Locality Name (eg, city)
localityName_default = BeiJing
organizationName = Organization Name (eg, company)
organizationName_default = stangj
commonName = Common Name (e.g. server FQDN or YOUR name)
commonName_max = 64
commonName_default = STANGJ CA Center
EOF
## 生成ca秘钥，得到ca.key
openssl genrsa -out ca.key 4096
## 生成ca证书签发请求，得到ca.csr
openssl req -new -subj "/C=CN/ST=BeiJing/L=BeiJing/O=stangj/CN=STANGJ CA Center" -sha256 -out ca.csr -key ca.key -config ${DOMAIN}/ca.conf
## 生成ca根证书，得到ca.crt
openssl x509 -req -days ${DATE} -in ca.csr -signkey ca.key -out ca.crt
# 生成终端用户证书
## 准备配置文件，得到server.conf
cat > ${DOMAIN}/server.conf << EOF
[ req ]
default_bits = 2048
distinguished_name = req_distinguished_name
req_extensions = req_ext
[ req_distinguished_name ]
countryName = Country Name (2 letter code)
countryName_default = CN
stateOrProvinceName = State or Province Name (full name)
stateOrProvinceName_default = BeiJing
localityName = Locality Name (eg, city)
localityName_default = BeiJing
organizationName = Organization Name (eg, company)
organizationName_default = stangj
commonName = Common Name (e.g. server FQDN or YOUR name)
commonName_max = 64
EOF
echo commonName_default "=" ${DOMAIN} >> ${DOMAIN}/server.conf
cat >> ${DOMAIN}/server.conf << EOF
[ req_ext ]
subjectAltName = @alt_names
[ alt_names ]
EOF
echo DNS.1 = ${DOMAIN} >> ${DOMAIN}/server.conf
echo DNS.2 = ${DOMAIN_EXT} >> ${DOMAIN}/server.conf
echo IP = ${IP} >> ${DOMAIN}/server.conf
## 生成秘钥，得到server.key
openssl genrsa -out server.key 2048
## 生成证书签发请求，得到server.csr
openssl req -new -subj "/C=CN/ST=BeiJing/L=BeiJing/O=stangj/CN=${DOMAIN}" -sha256 -out server.csr -key server.key -config ${DOMAIN}/server.conf
## 用CA证书生成终端用户证书，得到server.crt
openssl x509 -req -days 3650 -CA ca.crt -CAkey ca.key -CAcreateserial -in server.csr -out server.crt -extensions req_ext -extfile ${DOMAIN}/server.conf