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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,67 @@ | ||
| package larkgin | ||
|
|
||
| import ( | ||
| "crypto/sha1" | ||
| "encoding/json" | ||
| "fmt" | ||
| "log" | ||
| "strings" | ||
|
|
||
| "github.com/gin-gonic/gin" | ||
| "github.com/go-lark/lark" | ||
| ) | ||
|
|
||
| // GetCardCallback from gin context | ||
| func (opt LarkMiddleware) GetCardCallback(c *gin.Context) (*lark.EventCardCallback, bool) { | ||
| if card, ok := c.Get(opt.cardKey); ok { | ||
| msg, ok := card.(lark.EventCardCallback) | ||
| return &msg, ok | ||
| } | ||
|
|
||
| return nil, false | ||
| } | ||
|
|
||
| // LarkCardHandler card callback handler | ||
| // Encryption is automatically ignored, because it's not supported officially | ||
| func (opt LarkMiddleware) LarkCardHandler() gin.HandlerFunc { | ||
| return func(c *gin.Context) { | ||
| defer c.Next() | ||
| body, err := fetchBody(c) | ||
| if err != nil { | ||
| return | ||
| } | ||
| var inputBody = body | ||
|
|
||
| var event lark.EventCardCallback | ||
| err = json.Unmarshal(inputBody, &event) | ||
| if err != nil { | ||
| log.Println(err) | ||
| return | ||
| } | ||
| if opt.enableTokenVerification { | ||
| nonce := c.Request.Header.Get("X-Lark-Request-Nonce") | ||
| timestamp := c.Request.Header.Get("X-Lark-Request-Timestamp") | ||
| signature := c.Request.Header.Get("X-Lark-Signature") | ||
| token := opt.cardSignature(nonce, timestamp, string(body), opt.verificationToken) | ||
| log.Println(token, signature) | ||
| if signature != token { | ||
| log.Println("Token verification failed") | ||
| return | ||
| } | ||
| } | ||
| c.Set(opt.cardKey, event) | ||
| } | ||
| } | ||
|
|
||
| func (opt LarkMiddleware) cardSignature(nonce string, timestamp string, body string, token string) string { | ||
| var b strings.Builder | ||
| b.WriteString(timestamp) | ||
| b.WriteString(nonce) | ||
| b.WriteString(token) | ||
| b.WriteString(body) | ||
| bs := []byte(b.String()) | ||
| h := sha1.New() | ||
| h.Write(bs) | ||
| bs = h.Sum(nil) | ||
| return fmt.Sprintf("%x", bs) | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,43 @@ | ||
| package larkgin | ||
|
|
||
| import ( | ||
| "testing" | ||
|
|
||
| "github.com/gin-gonic/gin" | ||
| "github.com/go-lark/lark" | ||
| "github.com/stretchr/testify/assert" | ||
| ) | ||
|
|
||
| func TestCardCallback(t *testing.T) { | ||
| var ( | ||
| r = gin.Default() | ||
| middleware = NewLarkMiddleware() | ||
|
|
||
| ok bool | ||
| event *lark.EventCardCallback | ||
| ) | ||
| r.Use(middleware.LarkCardHandler()) | ||
|
|
||
| card := map[string]interface{}{ | ||
| "app_id": "fake_app_id", | ||
| "open_id": "fake_open_id", | ||
| "user_id": "f123f456", | ||
| "open_message_id": "om_8169c75fbae56c6bebb7e914b92253b4", | ||
| "open_chat_id": "fake_oc_id", | ||
| "tenant_key": "1068767a888dd740", | ||
| "token": "c-2fa8cd831bc83e6350b5be32eb24d2863be4bc5b", | ||
| "action": map[string]interface{}{ | ||
| "tag": "button", | ||
| "value": map[string]interface{}{"action": "1"}, | ||
| }, | ||
| } | ||
| r.POST("/", func(c *gin.Context) { | ||
| event, ok = middleware.GetCardCallback(c) | ||
| t.Log(event, ok) | ||
| }) | ||
| performRequest(r, "POST", "/", card) | ||
| assert.True(t, ok) | ||
| if assert.NotNil(t, event) { | ||
| assert.Equal(t, "button", event.Action.Tag) | ||
| } | ||
| } |
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