52 lines
1.4 KiB
Go
52 lines
1.4 KiB
Go
// Copyright 2017 Manu Martinez-Almeida. All rights reserved.
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// Use of this source code is governed by a MIT style
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// license that can be found in the LICENSE file.
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package gin
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import (
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"net/http"
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"os"
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)
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// OnlyFilesFS implements an http.FileSystem without `Readdir` functionality.
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type OnlyFilesFS struct {
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FileSystem http.FileSystem
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}
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// Open passes `Open` to the upstream implementation without `Readdir` functionality.
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func (o OnlyFilesFS) Open(name string) (http.File, error) {
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f, err := o.FileSystem.Open(name)
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if err != nil {
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return nil, err
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}
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return neutralizedReaddirFile{f}, nil
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}
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// neutralizedReaddirFile wraps http.File with a specific implementation of `Readdir`.
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type neutralizedReaddirFile struct {
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http.File
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}
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// Readdir overrides the http.File default implementation and always returns nil.
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func (n neutralizedReaddirFile) Readdir(_ int) ([]os.FileInfo, error) {
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// this disables directory listing
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return nil, nil
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}
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// Dir returns an http.FileSystem that can be used by http.FileServer().
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// It is used internally in router.Static().
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// if listDirectory == true, then it works the same as http.Dir(),
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// otherwise it returns a filesystem that prevents http.FileServer() to list the directory files.
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func Dir(root string, listDirectory bool) http.FileSystem {
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fs := http.Dir(root)
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if listDirectory {
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return fs
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}
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return &OnlyFilesFS{FileSystem: fs}
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}
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