wisski-cloud-distillery/internal/dis/component/control/server.go
2023-01-06 18:59:10 +01:00

55 lines
1.7 KiB
Go

package control
import (
"context"
"io"
"net/http"
"github.com/FAU-CDI/wisski-distillery/pkg/cancel"
"github.com/gorilla/csrf"
"github.com/rs/zerolog"
)
// Server returns an http.Mux that implements the main server instance.
// The server may spawn background tasks, but these should be terminated once context closes.
//
// Logging messages are directed to progress
func (control *Control) Server(ctx context.Context, progress io.Writer) (http.Handler, error) {
// create a new mux
mux := http.NewServeMux()
// create a csrf protector
csrfProtector := control.CSRF()
// iterate over all the handler
for _, s := range control.Dependencies.Routeables {
routes := s.Routes()
zerolog.Ctx(ctx).Info().Str("component", s.Name()).Strs("paths", routes.Paths).Bool("csrf", routes.CSRF).Bool("decorator", routes.Decorator != nil).Msg("mounting route")
for _, path := range routes.Paths {
handler, err := s.HandleRoute(ctx, path)
if err != nil {
return nil, err
}
mux.Handle(path, routes.Decorate(handler, csrfProtector))
}
}
// apply the given context function
return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
r = r.WithContext(cancel.ValuesOf(r.Context(), ctx))
mux.ServeHTTP(w, r)
}), nil
}
// CSRF returns a CSRF handler for the given function
func (control *Control) CSRF() func(http.Handler) http.Handler {
var opts []csrf.Option
if !control.Config.HTTPSEnabled() {
opts = append(opts, csrf.Secure(false))
}
opts = append(opts, csrf.SameSite(csrf.SameSiteStrictMode))
opts = append(opts, csrf.CookieName(CSRFCookie))
opts = append(opts, csrf.FieldName(CSRFCookieField))
return csrf.Protect(control.Config.CSRFSecret(), opts...)
}