Merge pull request #1 from hduhelp/eson_dev

EsonDev PR

.hdu-cli.yaml

@@ -0,0 +1,15 @@
+net:
+    auth:
+        # i-HDU wifi login
+        #
+        # Manually method
+        # username always is your student id like 20051101
+        # password is what u know
+        # and put the file at your home directory
+        #
+        # Auto method
+        # hdu-cli net login --username 20051101 --password your-password
+        # After Testing on my Kali linux The ( -s / -d ) option seems not work correctly.
+        # There need further debugging.
+        username: 20051101
+        password: your-password

README.md

@@ -6,24 +6,46 @@
 go install github.com/hduhelp/hdu-cli@latest
 ```
 
+<details>
+<summary>Trouble shoot</summary>
+
+> The Command may need root privilege
+>
+> and sometimes go env is not install completely on your root account (sudo mode)
+>
+> so try like `sudo $GOROOT/bin/go install github.com/hduhelp/hdu-cli@latest`
+> 
+> By the way, if you follow the offical installation guide of GO, The goroot will be like /usr/local/go/
+</details>
+
 ## Usage
 
-### hdu-cli [command]
+### hdu-cli [sub command]
 
-### Available Commands:
+### Available Sub Commands:
 
-- completion  generate the autocompletion script for the specified shell
-- help        Help about any command
-- net         i-hdu network auth cli
+- completion  
+  - generate the autocompletion script for the specified shell
+- help        
+  - Help about any command
+- net         
+  - i-hdu network auth cli
 
 ### Flags:
 
-- --config string   config file (default is $HOME/.hdu-cli.yaml)
-- -h, --help            help for hdu_cli
-- -s, --save            save config
-- -V, --verbose         show more info
-- -v, --version         version for hdu_cli
+- --config string   
+  - config file (default is $HOME/.hdu-cli.yaml)
+  - more detail see comments at [hdu-cli.yaml example](./.hdu-cli.yaml)
+- -h, --help            
+  - help for hdu_cli
+- -s, --save            
+  - save config
+- -V, --verbose         
+  - show more info
+- -v, --version         
+  - version for hdu_cli
+
 
-Use "hdu_cli [command] --help" for more information about a command.
+Use `hdu_cli [sub command] --help` for more information about a command.
 
 

utils/str.go

@@ -4,11 +4,24 @@ import (
 	"crypto/hmac"
 	"crypto/md5"
 	"crypto/sha1"
+	"encoding/base64"
 	"encoding/hex"
 	"fmt"
 	"io"
 )
 
+func B64encode(content string) string {
+	return base64.StdEncoding.EncodeToString([]byte(content))
+}
+
+func B64decode(content string) (string, error) {
+	data, err := base64.StdEncoding.DecodeString(content)
+	if err != nil {
+		return "", err
+	}
+	return string(data), nil
+}
+
 func Sha1(content string) string {
 	h := sha1.New()
 	h.Write([]byte(content))