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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 (
"encoding/json"
"github.com/caddyserver/caddy/v2/caddyconfig/httpcaddyfile"
"github.com/caddyserver/caddy/v2/modules/caddyhttp"
"github.com/caddyserver/caddy/v2/modules/caddyhttp/rewrite"
)
func init() {
httpcaddyfile.RegisterHandlerDirective("file_server", parseCaddyfile)
httpcaddyfile.RegisterDirective("try_files", parseTryFiles)
}
func parseCaddyfile(h httpcaddyfile.Helper) (caddyhttp.MiddlewareHandler, error) {
var fsrv FileServer
for h.Next() {
args := h.RemainingArgs()
switch len(args) {
case 0:
case 1:
if args[0] != "browse" {
return nil, h.ArgErr()
}
fsrv.Browse = new(Browse)
default:
return nil, h.ArgErr()
}
for h.NextBlock(0) {
switch h.Val() {
case "hide":
fsrv.Hide = h.RemainingArgs()
if len(fsrv.Hide) == 0 {
return nil, h.ArgErr()
}
case "index":
fsrv.IndexNames = h.RemainingArgs()
if len(fsrv.Hide) == 0 {
return nil, h.ArgErr()
}
case "root":
if !h.Args(&fsrv.Root) {
return nil, h.ArgErr()
}
case "browse":
if fsrv.Browse != nil {
return nil, h.Err("browsing is already configured")
}
fsrv.Browse = new(Browse)
h.Args(&fsrv.Browse.TemplateFile)
default:
return nil, h.Errf("unknown subdirective '%s'", h.Val())
}
}
}
// hide the Caddyfile (and any imported Caddyfiles)
if configFiles := h.Caddyfiles(); len(configFiles) > 0 {
for _, file := range configFiles {
if !fileHidden(file, fsrv.Hide) {
fsrv.Hide = append(fsrv.Hide, file)
}
}
}
return &fsrv, nil
}
// parseTryFiles parses the try_files directive. It combines a file matcher
// with a rewrite directive, so this is not a standard handler directive.
// A try_files directive has this syntax (notice no matcher tokens accepted):
//
// try_files <files...>
//
// and is shorthand for:
//
// matcher:try_files {
// file {
// try_files <files...>
// }
// }
// rewrite match:try_files {http.matchers.file.relative}{http.request.uri.query_string}
//
func parseTryFiles(h httpcaddyfile.Helper) ([]httpcaddyfile.ConfigValue, error) {
if !h.Next() {
return nil, h.ArgErr()
}
try := h.RemainingArgs()
if len(try) == 0 {
return nil, h.ArgErr()
}
handler := rewrite.Rewrite{
URI: "{http.matchers.file.relative}{http.request.uri.query_string}",
}
matcherSet := map[string]json.RawMessage{
"file": h.JSON(MatchFile{
TryFiles: try,
}, nil),
}
return h.NewRoute(matcherSet, handler), nil
}
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