92 lines
1.7 KiB
Go
92 lines
1.7 KiB
Go
package line
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import (
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"crypto/hmac"
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"crypto/sha256"
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"encoding/base64"
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"encoding/json"
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"io/ioutil"
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"git.trj.tw/golang/mtfosbot/module/config"
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"git.trj.tw/golang/mtfosbot/module/context"
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"git.trj.tw/golang/mtfosbot/module/line-message"
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lineobj "git.trj.tw/golang/mtfosbot/module/line-message/line-object"
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)
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// GetRawBody - line webhook body get
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func GetRawBody(c *context.Context) {
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byteBody, err := ioutil.ReadAll(c.Request.Body)
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if err != nil {
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c.DataFormat("body read fail")
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return
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}
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c.Set("rawbody", byteBody)
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c.Next()
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}
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// VerifyLine - middleware
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func VerifyLine(c *context.Context) {
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rawbody, ok := c.Get("rawbody")
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if !ok {
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c.DataFormat("body read fail")
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return
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}
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var raw []byte
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if raw, ok = rawbody.([]byte); !ok {
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c.DataFormat("body type error")
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return
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}
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sign := c.GetHeader("X-Line-Signature")
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if len(sign) == 0 {
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c.Next()
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return
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}
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conf := config.GetConf()
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hash := hmac.New(sha256.New, []byte(conf.Line.Secret))
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_, err := hash.Write(raw)
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if err != nil {
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c.ServerError(nil)
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return
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}
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hashSign := base64.StdEncoding.EncodeToString(hash.Sum(nil))
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if hashSign != sign {
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c.CustomRes(403, map[string]string{
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"message": "sign verify fail",
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})
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return
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}
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c.Next()
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}
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// GetLineMessage -
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func GetLineMessage(c *context.Context) {
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rawbody, ok := c.Get("rawbody")
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if !ok {
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c.DataFormat("body read fail")
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}
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var raw []byte
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if raw, ok = rawbody.([]byte); !ok {
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c.DataFormat("body type error")
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}
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events := struct {
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Events []*lineobj.EventObject `json:"events"`
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}{}
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err := json.Unmarshal(raw, &events)
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if err != nil {
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c.ServerError(nil)
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return
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}
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if len(events.Events) > 0 {
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for _, v := range events.Events {
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go linemsg.MessageEvent(v)
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}
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}
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c.Success(nil)
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}
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