mirror of
https://github.com/astaxie/beego.git
synced 2024-12-23 10:20:49 +00:00
bf6bd6b292
Fixes warnings and errors raised by gometalinter and gosimple.
205 lines
5.6 KiB
Go
205 lines
5.6 KiB
Go
// Copyright 2014 beego Author. All Rights Reserved.
|
|
//
|
|
// 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 beego
|
|
|
|
import (
|
|
"bytes"
|
|
"errors"
|
|
"net/http"
|
|
"os"
|
|
"path"
|
|
"path/filepath"
|
|
"strconv"
|
|
"strings"
|
|
"sync"
|
|
"time"
|
|
|
|
"github.com/astaxie/beego/context"
|
|
"github.com/astaxie/beego/logs"
|
|
)
|
|
|
|
var errNotStaticRequest = errors.New("request not a static file request")
|
|
|
|
func serverStaticRouter(ctx *context.Context) {
|
|
if ctx.Input.Method() != "GET" && ctx.Input.Method() != "HEAD" {
|
|
return
|
|
}
|
|
|
|
forbidden, filePath, fileInfo, err := lookupFile(ctx)
|
|
if err == errNotStaticRequest {
|
|
return
|
|
}
|
|
|
|
if forbidden {
|
|
exception("403", ctx)
|
|
return
|
|
}
|
|
|
|
if filePath == "" || fileInfo == nil {
|
|
if BConfig.RunMode == DEV {
|
|
logs.Warn("Can't find/open the file:", filePath, err)
|
|
}
|
|
http.NotFound(ctx.ResponseWriter, ctx.Request)
|
|
return
|
|
}
|
|
if fileInfo.IsDir() {
|
|
requestURL := ctx.Input.URL()
|
|
if requestURL[len(requestURL)-1] != '/' {
|
|
redirectURL := requestURL + "/"
|
|
if ctx.Request.URL.RawQuery != "" {
|
|
redirectURL = redirectURL + "?" + ctx.Request.URL.RawQuery
|
|
}
|
|
ctx.Redirect(302, redirectURL)
|
|
} else {
|
|
//serveFile will list dir
|
|
http.ServeFile(ctx.ResponseWriter, ctx.Request, filePath)
|
|
}
|
|
return
|
|
}
|
|
|
|
var enableCompress = BConfig.EnableGzip && isStaticCompress(filePath)
|
|
var acceptEncoding string
|
|
if enableCompress {
|
|
acceptEncoding = context.ParseEncoding(ctx.Request)
|
|
}
|
|
b, n, sch, err := openFile(filePath, fileInfo, acceptEncoding)
|
|
if err != nil {
|
|
if BConfig.RunMode == DEV {
|
|
logs.Warn("Can't compress the file:", filePath, err)
|
|
}
|
|
http.NotFound(ctx.ResponseWriter, ctx.Request)
|
|
return
|
|
}
|
|
|
|
if b {
|
|
ctx.Output.Header("Content-Encoding", n)
|
|
} else {
|
|
ctx.Output.Header("Content-Length", strconv.FormatInt(sch.size, 10))
|
|
}
|
|
|
|
http.ServeContent(ctx.ResponseWriter, ctx.Request, filePath, sch.modTime, sch)
|
|
}
|
|
|
|
type serveContentHolder struct {
|
|
*bytes.Reader
|
|
modTime time.Time
|
|
size int64
|
|
encoding string
|
|
}
|
|
|
|
var (
|
|
staticFileMap = make(map[string]*serveContentHolder)
|
|
mapLock sync.RWMutex
|
|
)
|
|
|
|
func openFile(filePath string, fi os.FileInfo, acceptEncoding string) (bool, string, *serveContentHolder, error) {
|
|
mapKey := acceptEncoding + ":" + filePath
|
|
mapLock.RLock()
|
|
mapFile := staticFileMap[mapKey]
|
|
mapLock.RUnlock()
|
|
if isOk(mapFile, fi) {
|
|
return mapFile.encoding != "", mapFile.encoding, mapFile, nil
|
|
}
|
|
mapLock.Lock()
|
|
defer mapLock.Unlock()
|
|
if mapFile = staticFileMap[mapKey]; !isOk(mapFile, fi) {
|
|
file, err := os.Open(filePath)
|
|
if err != nil {
|
|
return false, "", nil, err
|
|
}
|
|
defer file.Close()
|
|
var bufferWriter bytes.Buffer
|
|
_, n, err := context.WriteFile(acceptEncoding, &bufferWriter, file)
|
|
if err != nil {
|
|
return false, "", nil, err
|
|
}
|
|
mapFile = &serveContentHolder{Reader: bytes.NewReader(bufferWriter.Bytes()), modTime: fi.ModTime(), size: int64(bufferWriter.Len()), encoding: n}
|
|
staticFileMap[mapKey] = mapFile
|
|
}
|
|
|
|
return mapFile.encoding != "", mapFile.encoding, mapFile, nil
|
|
}
|
|
|
|
func isOk(s *serveContentHolder, fi os.FileInfo) bool {
|
|
if s == nil {
|
|
return false
|
|
}
|
|
return s.modTime == fi.ModTime() && s.size == fi.Size()
|
|
}
|
|
|
|
// isStaticCompress detect static files
|
|
func isStaticCompress(filePath string) bool {
|
|
for _, statExtension := range BConfig.WebConfig.StaticExtensionsToGzip {
|
|
if strings.HasSuffix(strings.ToLower(filePath), strings.ToLower(statExtension)) {
|
|
return true
|
|
}
|
|
}
|
|
return false
|
|
}
|
|
|
|
// searchFile search the file by url path
|
|
// if none the static file prefix matches ,return notStaticRequestErr
|
|
func searchFile(ctx *context.Context) (string, os.FileInfo, error) {
|
|
requestPath := filepath.ToSlash(filepath.Clean(ctx.Request.URL.Path))
|
|
// special processing : favicon.ico/robots.txt can be in any static dir
|
|
if requestPath == "/favicon.ico" || requestPath == "/robots.txt" {
|
|
file := path.Join(".", requestPath)
|
|
if fi, _ := os.Stat(file); fi != nil {
|
|
return file, fi, nil
|
|
}
|
|
for _, staticDir := range BConfig.WebConfig.StaticDir {
|
|
filePath := path.Join(staticDir, requestPath)
|
|
if fi, _ := os.Stat(filePath); fi != nil {
|
|
return filePath, fi, nil
|
|
}
|
|
}
|
|
return "", nil, errNotStaticRequest
|
|
}
|
|
|
|
for prefix, staticDir := range BConfig.WebConfig.StaticDir {
|
|
if !strings.Contains(requestPath, prefix) {
|
|
continue
|
|
}
|
|
if len(requestPath) > len(prefix) && requestPath[len(prefix)] != '/' {
|
|
continue
|
|
}
|
|
filePath := path.Join(staticDir, requestPath[len(prefix):])
|
|
if fi, err := os.Stat(filePath); fi != nil {
|
|
return filePath, fi, err
|
|
}
|
|
}
|
|
return "", nil, errNotStaticRequest
|
|
}
|
|
|
|
// lookupFile find the file to serve
|
|
// if the file is dir ,search the index.html as default file( MUST NOT A DIR also)
|
|
// if the index.html not exist or is a dir, give a forbidden response depending on DirectoryIndex
|
|
func lookupFile(ctx *context.Context) (bool, string, os.FileInfo, error) {
|
|
fp, fi, err := searchFile(ctx)
|
|
if fp == "" || fi == nil {
|
|
return false, "", nil, err
|
|
}
|
|
if !fi.IsDir() {
|
|
return false, fp, fi, err
|
|
}
|
|
if requestURL := ctx.Input.URL(); requestURL[len(requestURL)-1] == '/' {
|
|
ifp := filepath.Join(fp, "index.html")
|
|
if ifi, _ := os.Stat(ifp); ifi != nil && ifi.Mode().IsRegular() {
|
|
return false, ifp, ifi, err
|
|
}
|
|
}
|
|
return !BConfig.WebConfig.DirectoryIndex, fp, fi, err
|
|
}
|