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// Copyright 2015 Matthew Holt and The Caddy Authors
//
// 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 fileserver
import (
"net/http"
"os"
"github.com/caddyserver/caddy"
"github.com/caddyserver/caddy/modules/caddyhttp"
)
func init() {
caddy.RegisterModule(caddy.Module{
Name: "http.matchers.file",
New: func() interface{} { return new(FileMatcher) },
})
}
// FileMatcher is a matcher that can match requests
// based on the local file system.
// TODO: Not sure how to do this well; we'd need the ability to
// hide files, etc...
// TODO: Also consider a feature to match directory that
// contains a certain filename (use filepath.Glob), useful
// if wanting to map directory-URI requests where the dir
// has index.php to PHP backends, for example (although this
// can effectively be done with rehandling already)
type FileMatcher struct {
Root string `json:"root"`
Path string `json:"path"`
Flags []string `json:"flags"`
}
// Match matches the request r against m.
func (m FileMatcher) Match(r *http.Request) bool {
fullPath := sanitizedPathJoin(m.Root, m.Path)
var match bool
if len(m.Flags) > 0 {
match = true
fi, err := os.Stat(fullPath)
for _, f := range m.Flags {
switch f {
case "EXIST":
match = match && os.IsNotExist(err)
case "DIR":
match = match && err == nil && fi.IsDir()
default:
match = false
}
}
}
return match
}
// Interface guard
var _ caddyhttp.RequestMatcher = (*FileMatcher)(nil)
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