feature:支持使用配置文件，增加网络检查

1、从Config.json读取配置
2、网络正常时跳过登录

.gitignore

@@ -1 +1,3 @@
 .idea/
+Mmx
+Config.json

Modles/config.go

@@ -0,0 +1,6 @@
+package Modles
+
+type Config struct {
+	From LoginForm
+	Meta LoginMeta
+}

Modles/login.go

@@ -0,0 +1,31 @@
+package Modles
+
+type LoginForm struct {
+	Domain   string `json:"domain"`
+	UserName string `json:"username"`
+	PassWord string `json:"password"`
+}
+
+type LoginMeta struct {
+	N     string `json:"n"`
+	VType string `json:"v_type"`
+	Acid  string `json:"acid"`
+	Enc   string `json:"enc"`
+}
+
+type LoginInfo struct {
+	UrlLoginPage       string
+	UrlGetChallengeApi string
+	UrlLoginApi        string
+
+	Ip              string
+	Token           string
+	EncryptedInfo   string
+	Md5             string
+	EncryptedMd5    string
+	EncryptedChkstr string
+	LoginResult     string
+
+	Form *LoginForm
+	Meta *LoginMeta
+}

README.md

@@ -1,4 +1,5 @@
 # BitSrunLoginGo
+
 NCU移动深澜校园网登录脚本Go语言版
 
 在main函数中填入账号密码和登录地址ip即可

Util/checker.go

@@ -0,0 +1,20 @@
+package Util
+
+import (
+	"fmt"
+	"net"
+)
+
+type checker struct{}
+
+var Checker checker
+
+func (checker) NetOk() bool {
+	if ip, err := net.LookupIP("www.msftconnecttest.com"); err != nil {
+		fmt.Println("a")
+		return false
+	} else if len(ip) == 0 || ip[0].String() != "13.107.4.52" {
+		return false
+	}
+	return true
+}

Util/config.go

@@ -0,0 +1,62 @@
+package Util
+
+import (
+	"Mmx/Modles"
+	"fmt"
+	"os"
+)
+
+type config struct {
+	Path string
+}
+
+var Config = config{
+	Path: "Config.json",
+}
+
+func (*config) Generate(Form *Modles.LoginForm, Meta *Modles.LoginMeta) *Modles.LoginInfo {
+	return &Modles.LoginInfo{
+		UrlLoginPage:       "http://" + Form.Domain + "/srun_portal_success",
+		UrlGetChallengeApi: "http://" + Form.Domain + "/cgi-bin/get_challenge",
+		UrlLoginApi:        "http://" + Form.Domain + "/cgi-bin/srun_portal",
+		Meta:               Meta,
+		Form: &Modles.LoginForm{
+			UserName: Form.UserName + "@cmcc",
+			PassWord: Form.PassWord,
+		},
+	}
+}
+
+func (a *config) Init() *Modles.LoginInfo {
+	if !File.Exists(a.Path) {
+		if err := File.Write(a.Path, &Modles.Config{ //默认值
+			From: Modles.LoginForm{
+				Domain:   "www.msftconnecttest.com",
+				UserName: "",
+				PassWord: "",
+			},
+			Meta: Modles.LoginMeta{
+				N:     "200",
+				VType: "1",
+				Acid:  "5",
+				Enc:   "srun_bx1",
+			},
+		}); err != nil {
+			fmt.Println("Create 'Config.json' error:\n", err.Error())
+			os.Exit(3)
+		}
+		fmt.Println("Please edit 'Config.json' and try again.")
+		os.Exit(1)
+	}
+
+	var c Modles.Config
+	if err := File.Read(a.Path, &c); err != nil {
+		fmt.Println("Read config failed:\n", err.Error())
+		os.Exit(3)
+	}
+
+	return a.Generate(
+		&c.From,
+		&c.Meta,
+	)
+}

Util/file.go

@@ -0,0 +1,39 @@
+package Util
+
+import (
+	"encoding/json"
+	"io/ioutil"
+	"os"
+)
+
+type file struct {
+}
+
+var File file
+
+func (*file) Exists(path string) bool {
+	_, err := os.Stat(path)
+	if err != nil {
+		if os.IsExist(err) {
+			return true
+		}
+		return false
+	}
+	return true
+}
+
+func (*file) Read(path string, receiver interface{}) error {
+	file, err := ioutil.ReadFile(path)
+	if err != nil {
+		return err
+	}
+	return json.Unmarshal(file, receiver)
+}
+
+func (*file) Write(path string, receiver interface{}) error {
+	data, err := json.MarshalIndent(receiver, "", " ")
+	if err != nil {
+		return err
+	}
+	return ioutil.WriteFile(path, data, 777)
+}

main.go

@@ -5,63 +5,23 @@ import (
 	"Mmx/Util"
 	"encoding/json"
 	"fmt"
-	"os"
 )
 
-type LoginForm struct {
-	UserName string
-	PassWord string
-}
-
-type LoginInfo struct {
-	UrlLoginPage       string
-	UrlGetChallengeApi string
-	UrlLoginApi        string
-	N                  string
-	VType              string
-	Acid               string
-	Enc                string
-
-	Ip              string
-	Token           string
-	EncryptedInfo   string
-	Md5             string
-	EncryptedMd5    string
-	EncryptedChkstr string
-	LoginResult     string
-	Form            *LoginForm
-}
-
-func Generate(Domain string, Username string, Password string) *LoginInfo {
-	return &LoginInfo{
-		UrlLoginPage:       "http://" + Domain + "/srun_portal_success?ac_id=5&theme=basic1",
-		UrlGetChallengeApi: "http://" + Domain + "/cgi-bin/get_challenge",
-		UrlLoginApi:        "http://" + Domain + "/cgi-bin/srun_portal",
-		N:                  "200",
-		VType:              "1",
-		Acid:               "5",
-		Enc:                "srun_bx1",
-		Form: &LoginForm{
-			UserName: Username + "@cmcc",
-			PassWord: Password,
-		},
-	}
-}
-
 func ErrHandler(err error) {
 	if err != nil {
-		defer os.Exit(3)
-		fmt.Println("Error")
+		fmt.Println("Error occurred")
 		panic(err)
 	}
 }
 
 func main() {
-	G := Generate(
-		"", //登录地址域名或ip
-		"", //账号
-		"", //密码
-	)
+	if Util.Checker.NetOk() {
+		fmt.Println("There's no need to login")
+		return
+	}
+
+	G := Util.Config.Init()
+
 	fmt.Println("Step1: Get local ip returned from srun server.")
 	{
 		body, err := Request.Get(G.UrlLoginPage, nil)
@@ -86,8 +46,8 @@ func main() {
 			"username": G.Form.UserName,
 			"password": G.Form.PassWord,
 			"ip":       G.Ip,
-			"acid":     G.Acid,
-			"enc_ver":  G.Enc,
+			"acid":     G.Meta.Acid,
+			"enc_ver":  G.Meta.Enc,
 		})
 		ErrHandler(err)
 		G.EncryptedInfo = "{SRBX1}" + Util.Base64(Util.XEncode(string(info), G.Token))
@@ -97,10 +57,10 @@ func main() {
 		var chkstr string
 		chkstr = G.Token + G.Form.UserName
 		chkstr += G.Token + G.Md5
-		chkstr += G.Token + G.Acid
+		chkstr += G.Token + G.Meta.Acid
 		chkstr += G.Token + G.Ip
-		chkstr += G.Token + G.N
-		chkstr += G.Token + G.VType
+		chkstr += G.Token + G.Meta.N
+		chkstr += G.Token + G.Meta.VType
 		chkstr += G.Token + G.EncryptedInfo
 		G.EncryptedChkstr = Util.Sha1(chkstr)
 
@@ -109,12 +69,12 @@ func main() {
 			"action":       "login",
 			"username":     G.Form.UserName,
 			"password":     G.EncryptedMd5,
-			"ac_id": G.Acid,
+			"ac_id":        G.Meta.Acid,
 			"ip":           G.Ip,
 			"info":         G.EncryptedInfo,
 			"chksum":       G.EncryptedChkstr,
-			"n": G.N,
-			"type": G.VType,
+			"n":            G.Meta.N,
+			"type":         G.Meta.VType,
 			"os":           "Windows 10",
 			"name":         "windows",
 			"double_stack": "0",