caddy/middleware/mime/mime.go
Tobias Weingartner b471b7e835 Fixup mime middleware to use a map and error on duplicate extensions.
- The mime middleware used filepath where it should arguably use path.
 - Changed the configuration to use a map instead of scanning an array
   during every request.  The map is static (after configuration), so
   should be fine for concurrent access.
 - Catch duplicate extensions within a configuration and error out.
 - Add tests for new error case.
2016-03-15 23:11:19 -07:00

33 lines
769 B
Go

package mime
import (
"net/http"
"path"
"github.com/mholt/caddy/middleware"
)
// Config represent a mime config. Map from extension to mime-type.
// Note, this should be safe with concurrent read access, as this is
// not modified concurrently.
type Config map[string]string
// Mime sets Content-Type header of requests based on configurations.
type Mime struct {
Next middleware.Handler
Configs Config
}
// ServeHTTP implements the middleware.Handler interface.
func (e Mime) ServeHTTP(w http.ResponseWriter, r *http.Request) (int, error) {
// Get a clean /-path, grab the extension
ext := path.Ext(path.Clean(r.URL.Path))
if contentType, ok := e.Configs[ext]; ok {
w.Header().Set("Content-Type", contentType)
}
return e.Next.ServeHTTP(w, r)
}