84 lines
2.2 KiB
Go
84 lines
2.2 KiB
Go
package dadaapi
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import (
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"crypto/md5"
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"fmt"
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"sort"
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"strings"
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"git.rosy.net.cn/baseapi/utils"
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)
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const (
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ResponseHttpCodeSuccess = 200
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ResponseHttpCodeGeneralErr = 555
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)
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type CallbackMsg struct {
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ClientID string `json:"client_id"`
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OrderID string `json:"order_id"`
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OrderStatus int `json:"order_status"`
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CancelReason string `json:"cancel_reason"`
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CancelFrom int `json:"cancel_from"`
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UpdateTime int `json:"update_time"`
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Signature string `json:"signature"`
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DmID int `json:"dm_id"`
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DmName string `json:"dm_name"`
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DmMobile string `json:"dm_mobile"`
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}
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type CallbackResponse struct {
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Code int `json:"code"` // 对于达达是无意义的，只是用于传递相应的HTTP CODE
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Dummy string `json:"dummy"`
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}
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var (
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SuccessResponse = &CallbackResponse{Code: ResponseHttpCodeSuccess}
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FailedResponse = &CallbackResponse{Code: ResponseHttpCodeGeneralErr}
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)
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func Err2CallbackResponse(err error, data string) *CallbackResponse {
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if err == nil {
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return SuccessResponse
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}
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return FailedResponse
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}
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func (a *API) signCallbackParams(mapData map[string]interface{}) string {
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values := make([]string, 0)
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for _, k := range []string{"client_id", "order_id", "update_time"} {
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values = append(values, fmt.Sprint(mapData[k]))
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}
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sort.Strings(values)
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finalStr := strings.Join(values, "")
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return fmt.Sprintf("%x", md5.Sum([]byte(finalStr)))
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}
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func (a *API) unmarshalData(data []byte, msg interface{}) (callbackResponse *CallbackResponse) {
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err := utils.UnmarshalUseNumber(data, msg)
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if err != nil {
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return FailedResponse
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}
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return nil
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}
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func (a *API) CheckCallbackValidation(mapData map[string]interface{}) (callbackResponse *CallbackResponse) {
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sign := a.signCallbackParams(mapData)
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if remoteSign, _ := mapData[signKey].(string); sign != remoteSign {
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return FailedResponse
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}
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return nil
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}
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func (a *API) GetOrderCallbackMsg(data []byte) (msg *CallbackMsg, callbackResponse *CallbackResponse) {
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msg = new(CallbackMsg)
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if callbackResponse = a.unmarshalData(data, msg); callbackResponse != nil {
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return nil, FailedResponse
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}
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mapData := utils.Struct2MapByJson(msg)
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callbackResponse = a.CheckCallbackValidation(mapData)
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return msg, callbackResponse
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}
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