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caddy/caddyhttp/extensions/ext.go
Matthew Holt baf6db5b57
Apply Apache license to all .go source files (closes #1865)
I am not a lawyer, but according to the appendix of the license,
these boilerplate notices should be included with every source file.
2017-09-22 23:56:58 -06:00

58 lines
1.7 KiB
Go

// Copyright 2015 Light Code Labs, LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// Package extensions contains middleware for clean URLs.
//
// The root path of the site is passed in as well as possible extensions
// to try internally for paths requested that don't match an existing
// resource. The first path+ext combination that matches a valid file
// will be used.
package extensions
import (
"net/http"
"os"
"path"
"strings"
"github.com/mholt/caddy/caddyhttp/httpserver"
)
// Ext can assume an extension from clean URLs.
// It tries extensions in the order listed in Extensions.
type Ext struct {
// Next handler in the chain
Next httpserver.Handler
// Path to site root
Root string
// List of extensions to try
Extensions []string
}
// ServeHTTP implements the httpserver.Handler interface.
func (e Ext) ServeHTTP(w http.ResponseWriter, r *http.Request) (int, error) {
urlpath := strings.TrimSuffix(r.URL.Path, "/")
if len(r.URL.Path) > 0 && path.Ext(urlpath) == "" && r.URL.Path[len(r.URL.Path)-1] != '/' {
for _, ext := range e.Extensions {
_, err := os.Stat(httpserver.SafePath(e.Root, urlpath) + ext)
if err == nil {
r.URL.Path = urlpath + ext
break
}
}
}
return e.Next.ServeHTTP(w, r)
}