refactor: multiple domain support

Author: Fishdrowned

.gitignore

@@ -1,2 +1,3 @@
 /out
 /deploy-passport.sh
+/cert.all.sh

README.md

@@ -12,6 +12,12 @@
 假设你的项目网站是 `example.dev`，CDN 网站设置为 `cdn.example.dev`，  
 你只需在 `nginx` 里面配置一个网站，`server_name` 同时填写  `example.dev`  
 和 `cdn.example.dev`，它们可以使用同一个 `*.example.dev` 的证书。
+1. 现在你只需要一个证书，就可以搞定所有项目网站！
+
+我当时怎么没想到可以这样用 `SAN`：
+```ini
+subjectAltName=DNS:*.one.dev,DNS:one.dev,DNS:*.two.dev,DNS:two.dev,DNS:*.three.dev,DNS:three.dev,DNS:*.four.dev,DNS:four.dev
+```
 
 ## 系统要求
 1. Linux，openssl
@@ -36,10 +42,12 @@
 
 ### 2. 用 gen.cert.sh 生成网站证书
 ```bash
-./gen.cert.sh <domain>
+./gen.cert.sh <domain> [<domain2>] [<domain3>] [<domain4>] ...
 ```
 把 `<domain>` 替换成你的域名，例如 `example.dev`
 
+如果有多个项目网站，可以把所有网站都加上去，用空格隔开。
+
 生成的证书位于：
 ```text
 ssl/out/<domain>-<date>-<time>/<domain>.cert.pem

gen.cert.sh

@@ -5,12 +5,20 @@ then
     echo
     echo 'Issue a wildcard SSL certification with Fishdrowned ROOT CA'
     echo
-    echo 'Usage: ./gen.cert.sh <domain>'
+    echo 'Usage: ./gen.cert.sh <domain> [<domain2>] [<domain3>] [<domain4>] ...'
     echo '    <domain>          The domain name of your site, like "example.dev",'
     echo '                      you will get a certification for *.example.dev'
+    echo '                      Multiple domains are acceptable'
     exit;
 fi
 
+SAN=""
+for var in "$@"
+do
+    SAN+="DNS:*.${var},DNS:${var},"
+done
+SAN=${SAN: : -1}
+
 # Move to root directory
 cd "$(dirname "${BASH_SOURCE[0]}")"
 
@@ -23,7 +31,7 @@ openssl req -new -out "${DIR}/$1.csr.pem" \
     -key out/root.key.pem \
     -reqexts SAN \
     -config <(cat /etc/ssl/openssl.cnf \
-        <(printf "[SAN]\nsubjectAltName=DNS:*.$1,DNS:$1")) \
+        <(printf "[SAN]\nsubjectAltName=${SAN}")) \
     -subj "/C=CN/ST=Guangdong/L=Guangzhou/O=Fishdrowned/OU=$1/CN=*.$1"
 
 # Issue certification
@@ -37,8 +45,3 @@ cat "${DIR}/$1.cert.pem" ./out/root.cert.pem > "${DIR}/$1.bundle.cert.pem"
 echo
 echo "Certifications are located in:"
 find "${DIR}/" -type f
-
-if [ "$2" ]
-then
-    $2 "${DIR}/$1"
-fi