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135 lines
2.5 KiB
135 lines
2.5 KiB
package site
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import (
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"crypto/md5"
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"encoding/hex"
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"encoding/json"
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"errors"
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"strconv"
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"strings"
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"time"
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"git.tetele.net/tgo/crypter"
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"github.com/golang/protobuf/proto"
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)
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type SiteConfigItemReqArg struct {
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SiteId string `json:"site_id"`
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Dbname string `json:"dbname"`
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Key string `json:"key"`
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}
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type SiteConfigItemRes struct {
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Type string
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Value string
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}
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/**
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* 由配置key取对应value
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* 请求及回均加密验签
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* 2021/01/20
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* GZ
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*/
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func GetConfigItem(site_id, dbname, key string, url ...string) (*SiteConfigItemRes, error) {
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var site_rpc_url string = "127.0.0.1:7971"
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if len(url) > 0 && url[0] != "" {
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site_rpc_url = url[0]
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}
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conn, _, err := DialSiteService("tcp", site_rpc_url)
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if err != nil {
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return nil, err
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}
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defer conn.Close()
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arg := SiteConfigItemReqArg{site_id, dbname, key}
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data_json, err := json.Marshal(arg)
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if err != nil {
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return nil, err
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}
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now_int64 := time.Now().Unix()
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encryData := crypter.DesEn(string(data_json), "confdata")
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now := strconv.FormatInt(now_int64, 10)
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sign := Sign(encryData, now)
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req := &ConfigRequest{proto.String(encryData), proto.String(now), proto.String(sign), nil}
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res := &ConfigResponse{}
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err = conn.GetConfig(req, res)
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if err != nil {
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return nil, err
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}
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res_data := res.GetData()
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if res_data != "" {
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time_int64, err := strconv.ParseInt(res.GetTime(), 10, 64)
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if err != nil {
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return nil, err
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}
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now_int64 = time.Now().Unix()
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if now_int64-time_int64 > 10 || time_int64-now_int64 > 10 {
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//时间误差前后10秒，返回
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return nil, errors.New("返回时间错误")
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}
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check_sign := CheckSign(res.GetSign(), res_data, res.GetTime())
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if !check_sign {
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return nil, errors.New("返回数据签名错误")
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}
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//解密
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res_data_de := crypter.DesDe(res_data, "confdata")
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var res_arr SiteConfigItemRes
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err = json.Unmarshal([]byte(res_data_de), &res_arr)
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if err != nil {
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return nil, err
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}
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return &res_arr, nil
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}
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return nil, nil
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}
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/**
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* 签名
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*/
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func Sign(data string, salt string) string {
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var build strings.Builder
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build.WriteString(data)
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build.WriteString(salt)
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build.WriteString("site55sign33")
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data_str := build.String()
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h := md5.New()
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h.Write([]byte(data_str)) // 需要加密的字符串
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return hex.EncodeToString(h.Sum(nil)) // 输出加密结果
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}
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/**
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* 验证签名
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*/
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func CheckSign(sign_str, data, salt string) bool {
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sign := Sign(data, salt)
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if strings.Compare(sign_str, sign) > -1 {
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return true
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}
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return false
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}
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