wechat_hitxy/config.go

package main

import (
	"encoding/base64"
	"encoding/json"
	"io/ioutil"
	"log"
)

//WechatAPIConfig all secret related API Config
type WechatAPIConfig struct {
	//Token is the wechat API shared secrete
	Token string `json:"Token"`

	//EncodingAESKey is the Key for encrypt messages
	EncodingAESKey string `'json:"EncodingAESKey"`

	//Appid is wechat public account appid
	Appid string `json:"Appid"`

	//AppSecret is how we identify ourselves.
	AppSecret string `json:"AppSecret"`
}

//APIConfig contains secrets that cannot store in source file
var APIConfig WechatAPIConfig

func readConfig() error {

	log.Printf("read config from %s\r\n", "server_config.json")
	body, err := ioutil.ReadFile("server_config.json")
	if err != nil {
		return err
	}
	return json.Unmarshal(body, &APIConfig)
}

//convert AesEncryptKey into Binary 32bytes
func getAesEncryptKey() [32]byte {
	key, _ := base64.StdEncoding.DecodeString(APIConfig.EncodingAESKey + "=")
	var k [32]byte
	copy(k[:], key)
	return k
}