78 lines
2.1 KiB
Go
78 lines
2.1 KiB
Go
package notify
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import (
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"crypto/md5"
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"encoding/base64"
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"encoding/hex"
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"encoding/xml"
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"errors"
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"github.com/silenceper/wechat/v2/util"
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)
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// reference: https://pay.weixin.qq.com/wiki/doc/api/jsapi.php?chapter=9_16&index=10
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// RefundedResult 退款回调
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type RefundedResult struct {
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ReturnCode *string `xml:"return_code"`
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ReturnMsg *string `xml:"return_msg"`
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AppID *string `xml:"appid"`
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MchID *string `xml:"mch_id"`
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NonceStr *string `xml:"nonce_str"`
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ReqInfo *string `xml:"req_info"`
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}
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// RefundedReqInfo 退款结果（明文）
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type RefundedReqInfo struct {
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TransactionID *string `xml:"transaction_id"`
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OutTradeNO *string `xml:"out_trade_no"`
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RefundID *string `xml:"refund_id"`
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OutRefundNO *string `xml:"out_refund_no"`
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TotalFee *int `xml:"total_fee"`
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SettlementTotalFee *int `xml:"settlement_total_fee"`
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RefundFee *int `xml:"refund_fee"`
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SettlementRefundFee *int `xml:"settlement_refund_fee"`
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RefundStatus *string `xml:"refund_status"`
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SuccessTime *string `xml:"success_time"`
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RefundRecvAccount *string `xml:"refund_recv_accout"`
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RefundAccount *string `xml:"refund_account"`
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RefundRequestSource *string `xml:"refund_request_source"`
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}
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// RefundedResp 消息通知返回
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type RefundedResp struct {
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ReturnCode string `xml:"return_code"`
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ReturnMsg string `xml:"return_msg"`
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}
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// DecryptReqInfo 对退款结果进行解密
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func (notify *Notify) DecryptReqInfo(result *RefundedResult) (*RefundedReqInfo, error) {
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var err error
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if result == nil || result.ReqInfo == nil {
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return nil, errors.New("empty refunded_result or req_info")
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}
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base64Decode, err := base64.StdEncoding.DecodeString(*result.ReqInfo)
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if err != nil {
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return nil, err
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}
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hash := md5.New()
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if _, err = hash.Write([]byte(notify.Key)); err != nil {
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return nil, err
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}
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md5APIKey := hex.EncodeToString(hash.Sum(nil))
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data, err := util.AesECBDecrypt(base64Decode, []byte(md5APIKey))
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if err != nil {
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return nil, err
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}
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res := &RefundedReqInfo{}
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if err = xml.Unmarshal(data, res); err != nil {
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return nil, err
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}
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return res, nil
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}
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