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

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)
@@ -86,42 +46,42 @@ 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))
-		G.Md5=Util.Md5(G.Token)
-		G.EncryptedMd5 = "{MD5}"+G.Md5
+		G.Md5 = Util.Md5(G.Token)
+		G.EncryptedMd5 = "{MD5}" + G.Md5
 
 		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.EncryptedInfo
-		G.EncryptedChkstr=Util.Sha1(chkstr)
+		chkstr += G.Token + G.Meta.N
+		chkstr += G.Token + G.Meta.VType
+		chkstr += G.Token + G.EncryptedInfo
+		G.EncryptedChkstr = Util.Sha1(chkstr)
 
-		res,err:=Request.Get(G.UrlLoginApi, map[string]string{
-			"callback": "jQuery1124011576657442209481_1602812074032",
-			"action":"login",
-			"username": G.Form.UserName,
-			"password": G.EncryptedMd5,
-			"ac_id": G.Acid,
-			"ip": G.Ip,
-			"info": G.EncryptedInfo,
-			"chksum": G.EncryptedChkstr,
-			"n": G.N,
-			"type": G.VType,
-			"os": "Windows 10",
-			"name": "windows",
+		res, err := Request.Get(G.UrlLoginApi, map[string]string{
+			"callback":     "jQuery1124011576657442209481_1602812074032",
+			"action":       "login",
+			"username":     G.Form.UserName,
+			"password":     G.EncryptedMd5,
+			"ac_id":        G.Meta.Acid,
+			"ip":           G.Ip,
+			"info":         G.EncryptedInfo,
+			"chksum":       G.EncryptedChkstr,
+			"n":            G.Meta.N,
+			"type":         G.Meta.VType,
+			"os":           "Windows 10",
+			"name":         "windows",
 			"double_stack": "0",
-			"_": "1602812428675",
+			"_":            "1602812428675",
 		})
 		ErrHandler(err)
-		G.LoginResult,err=Util.GetResult(res)
+		G.LoginResult, err = Util.GetResult(res)
 		ErrHandler(err)
 	}
 	fmt.Println("The loggin result is: " + G.LoginResult)