Add bypass login for TP-Link cameras

pkg/rtsp/conn.go

@@ -220,12 +220,15 @@ func (c *Conn) Do(req *tcp.Request) (*tcp.Response, error) {
 	if res.StatusCode == http.StatusUnauthorized {
 		switch c.auth.Method {
 		case tcp.AuthNone:
+			if c.auth.ReadNone(res) {
+				return c.Do(req)
+			}
 			return nil, errors.New("user/pass not provided")
 		case tcp.AuthUnknown:
 			if c.auth.Read(res) {
 				return c.Do(req)
 			}
-		case tcp.AuthBasic, tcp.AuthDigest:
+		default:
 			return nil, errors.New("wrong user/pass")
 		}
 	}

pkg/tcp/auth.go

@@ -22,6 +22,7 @@ const (
 	AuthUnknown
 	AuthBasic
 	AuthDigest
+	AuthTPLink // https://drmnsamoliu.github.io/video.html
 )
 
 func NewAuth(user *url.Userinfo) *Auth {
@@ -79,6 +80,8 @@ func (a *Auth) Write(req *Request) {
 			`, uri="%s", response="%s"`, uri, response,
 		)
 		req.Header.Set("Authorization", header)
+	case AuthTPLink:
+		req.URL.Host = "127.0.0.1"
 	}
 }
 
@@ -100,6 +103,15 @@ func (a *Auth) Validate(req *Request) bool {
 	return header == a.header
 }
 
+func (a *Auth) ReadNone(res *Response) bool {
+	auth := res.Header.Get("WWW-Authenticate")
+	if strings.Contains(auth, "TP-LINK Streaming Media") {
+		a.Method = AuthTPLink
+		return true
+	}
+	return false
+}
+
 func Between(s, sub1, sub2 string) string {
 	i := strings.Index(s, sub1)
 	if i < 0 {