cloudflared/management/middleware.go
Devin Carr 38cd455e4d TUN-7373: Streaming logs override for same actor
To help accommodate web browser interactions with websockets, when a
streaming logs session is requested for the same actor while already
serving a session for that user in a separate request, the original
request will be closed and the new request start streaming logs
instead. This should help with rogue sessions holding on for too long
with no client on the other side (before idle timeout or connection
close).
2023-04-21 11:54:37 -07:00

77 lines
2.1 KiB
Go

package management
import (
"context"
"fmt"
"net/http"
)
type ctxKey int
const (
accessClaimsCtxKey ctxKey = iota
)
const (
connectorIDQuery = "connector_id"
accessTokenQuery = "access_token"
)
var (
errMissingAccessToken = managementError{Code: 1001, Message: "missing access_token query parameter"}
)
// HTTP middleware setting the parsed access_token claims in the request context
func ValidateAccessTokenQueryMiddleware(next http.Handler) http.Handler {
return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
// Validate access token
accessToken := r.URL.Query().Get("access_token")
if accessToken == "" {
writeHTTPErrorResponse(w, errMissingAccessToken)
return
}
token, err := parseToken(accessToken)
if err != nil {
writeHTTPErrorResponse(w, errMissingAccessToken)
return
}
r = r.WithContext(context.WithValue(r.Context(), accessClaimsCtxKey, token))
next.ServeHTTP(w, r)
})
}
// Middleware validation error struct for returning to the eyeball
type managementError struct {
Code int `json:"code,omitempty"`
Message string `json:"message,omitempty"`
}
func (m *managementError) Error() string {
return m.Message
}
// Middleware validation error HTTP response JSON for returning to the eyeball
type managementErrorResponse struct {
Success bool `json:"success,omitempty"`
Errors []managementError `json:"errors,omitempty"`
}
// writeErrorResponse will respond to the eyeball with basic HTTP JSON payloads with validation failure information
func writeHTTPErrorResponse(w http.ResponseWriter, errResp managementError) {
w.Header().Set("Content-Type", "application/json")
w.WriteHeader(http.StatusBadRequest)
err := json.NewEncoder(w).Encode(managementErrorResponse{
Success: false,
Errors: []managementError{errResp},
})
// we have already written the header, so write a basic error response if unable to encode the error
if err != nil {
// fallback to text message
http.Error(w, fmt.Sprintf(
"%d %s",
http.StatusBadRequest,
http.StatusText(http.StatusBadRequest),
), http.StatusBadRequest)
}
}