package main

import (
	"fmt"
	"io/ioutil"
	"net/http"
	"net/url"
	"time"
	"math/rand"
	"strconv"
	"crypto/sha1"
	"crypto/hmac"
	"encoding/base64"
)

/*
	*  keyStr 密钥
	*  value  消息内容
*/
func HMACSHA1(keyStr, value string) string{

   key := []byte(keyStr)
   mac := hmac.New(sha1.New, key)
   mac.Write([]byte(value))
  //进行base64编码
   res := base64.StdEncoding.EncodeToString(mac.Sum(nil))

   return res
}

func main() {
	curUTC := time.Now().UTC().Format("2006-01-02T15:04:05Z")
	signature :=  rand.New(rand.NewSource(time.Now().Unix())).Int63()
	httpMethod := 
		"AccessKeyId=LTAILUL4ts0XZgY5"	+
		"&Action=CheckDomain"			+
		"&DomainName=abc.com" 			+
		"&Format=JSON" 					+
		"&SignatureMethod=HMAC-SHA1" 	+
		"&SignatureNonce="	+ strconv.Itoa(int(signature)) +
		"&SignatureVersion=1.0"			+
		"&Timestamp=" 		+ url.QueryEscape(curUTC) 	+
		"&Version=2016-05-11"
	StringToSign :=
  		"GET&"+url.QueryEscape("/") + "&" + url.QueryEscape(httpMethod)
	url := 
		"http://domain.aliyuncs.com/?"	+
		httpMethod						+
		"&Signature="	+	HMACSHA1("LTAILUL4ts0XZgY5&", StringToSign)
		fmt.Println("url:", url)
		fmt.Println("curUTC:", curUTC)
		fmt.Println("signature:",signature)
		fmt.Println("StringToSign",StringToSign)
	resp, err := http.Get(url)
	if err != nil {
		fmt.Println(err)
		return
	}
	defer resp.Body.Close()
	body, err := ioutil.ReadAll(resp.Body)
	fmt.Println(string(body))
	fmt.Println(resp.StatusCode)
	if resp.StatusCode == 200 {
		fmt.Println("ok")
	}
}