Improve assets handler middleware (#15961)
* Use route to serve assets but not middleware * Fix build error with bindata tag * convert path to absolute * fix build * reduce function stack * Add tests for assets * Remove test for assets because they are not generated * Use a http function to serve assets * Still use middleware to serve assets then less middleware stack for assets * Move serveContent to original position * remove unnecessary blank line change * Fix bug for /assets* requests * clean code Co-authored-by: zeripath <art27@cantab.net>
This commit is contained in:
Lunny Xiao
GitHub
parent
d79c8bc302
commit
effad26c0e
6 changed files with 108 additions and 167 deletions
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@ -35,6 +35,8 @@ func TestLinksNoLogin(t *testing.T) {
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"/user2/repo1",
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"/user2/repo1/projects",
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"/user2/repo1/projects/1",
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"/assets/img/404.png",
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"/assets/img/500.png",
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}
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for _, link := range links {
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@ -13,12 +13,11 @@ import (
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"time"
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)
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// Static implements the static handler for serving assets.
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func Static(opts *Options) func(next http.Handler) http.Handler {
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return opts.staticHandler(opts.Directory)
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func fileSystem(dir string) http.FileSystem {
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return http.Dir(dir)
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}
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// ServeContent serve http content
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func ServeContent(w http.ResponseWriter, req *http.Request, fi os.FileInfo, modtime time.Time, content io.ReadSeeker) {
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// serveContent serve http content
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func serveContent(w http.ResponseWriter, req *http.Request, fi os.FileInfo, modtime time.Time, content io.ReadSeeker) {
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http.ServeContent(w, req, fi.Name(), modtime, content)
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}
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@ -5,85 +5,82 @@
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package public
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import (
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"log"
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"net/http"
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"os"
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"path"
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"path/filepath"
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"strings"
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"code.gitea.io/gitea/modules/httpcache"
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"code.gitea.io/gitea/modules/log"
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"code.gitea.io/gitea/modules/setting"
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)
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// Options represents the available options to configure the handler.
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type Options struct {
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Directory string
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IndexFile string
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SkipLogging bool
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FileSystem http.FileSystem
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Prefix string
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CorsHandler func(http.Handler) http.Handler
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}
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// KnownPublicEntries list all direct children in the `public` directory
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var KnownPublicEntries = []string{
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"css",
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"fonts",
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"img",
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"js",
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"serviceworker.js",
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"vendor",
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}
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// Custom implements the static handler for serving custom assets.
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func Custom(opts *Options) func(next http.Handler) http.Handler {
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return opts.staticHandler(path.Join(setting.CustomPath, "public"))
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}
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// staticFileSystem implements http.FileSystem interface.
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type staticFileSystem struct {
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dir *http.Dir
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}
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func newStaticFileSystem(directory string) staticFileSystem {
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if !filepath.IsAbs(directory) {
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directory = filepath.Join(setting.AppWorkPath, directory)
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// AssetsHandler implements the static handler for serving custom or original assets.
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func AssetsHandler(opts *Options) func(next http.Handler) http.Handler {
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var custPath = filepath.Join(setting.CustomPath, "public")
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if !filepath.IsAbs(custPath) {
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custPath = filepath.Join(setting.AppWorkPath, custPath)
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}
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if !filepath.IsAbs(opts.Directory) {
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opts.Directory = filepath.Join(setting.AppWorkPath, opts.Directory)
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}
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if !strings.HasSuffix(opts.Prefix, "/") {
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opts.Prefix += "/"
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}
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dir := http.Dir(directory)
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return staticFileSystem{&dir}
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}
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func (fs staticFileSystem) Open(name string) (http.File, error) {
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return fs.dir.Open(name)
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}
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// StaticHandler sets up a new middleware for serving static files in the
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func StaticHandler(dir string, opts *Options) func(next http.Handler) http.Handler {
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return opts.staticHandler(dir)
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}
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func (opts *Options) staticHandler(dir string) func(next http.Handler) http.Handler {
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return func(next http.Handler) http.Handler {
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// Defaults
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if len(opts.IndexFile) == 0 {
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opts.IndexFile = "index.html"
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return http.HandlerFunc(func(resp http.ResponseWriter, req *http.Request) {
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if !strings.HasPrefix(req.URL.Path, opts.Prefix) {
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next.ServeHTTP(resp, req)
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return
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}
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// Normalize the prefix if provided
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if opts.Prefix != "" {
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// Ensure we have a leading '/'
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if opts.Prefix[0] != '/' {
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opts.Prefix = "/" + opts.Prefix
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}
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// Remove any trailing '/'
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opts.Prefix = strings.TrimRight(opts.Prefix, "/")
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}
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if opts.FileSystem == nil {
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opts.FileSystem = newStaticFileSystem(dir)
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if req.Method != "GET" && req.Method != "HEAD" {
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resp.WriteHeader(http.StatusNotFound)
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return
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}
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return http.HandlerFunc(func(w http.ResponseWriter, req *http.Request) {
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if !opts.handle(w, req, opts) {
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next.ServeHTTP(w, req)
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file := req.URL.Path
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file = file[len(opts.Prefix):]
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if len(file) == 0 {
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resp.WriteHeader(http.StatusNotFound)
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return
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}
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if strings.Contains(file, "\\") {
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resp.WriteHeader(http.StatusBadRequest)
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return
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}
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file = "/" + file
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var written bool
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if opts.CorsHandler != nil {
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written = true
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opts.CorsHandler(http.HandlerFunc(func(http.ResponseWriter, *http.Request) {
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written = false
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})).ServeHTTP(resp, req)
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}
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if written {
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return
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}
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// custom files
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if opts.handle(resp, req, http.Dir(custPath), file) {
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return
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}
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// internal files
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if opts.handle(resp, req, fileSystem(opts.Directory), file) {
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return
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}
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resp.WriteHeader(http.StatusNotFound)
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})
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}
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}
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@ -98,76 +95,36 @@ func parseAcceptEncoding(val string) map[string]bool {
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return types
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}
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func (opts *Options) handle(w http.ResponseWriter, req *http.Request, opt *Options) bool {
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if req.Method != "GET" && req.Method != "HEAD" {
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return false
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}
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file := req.URL.Path
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// if we have a prefix, filter requests by stripping the prefix
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if opt.Prefix != "" {
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if !strings.HasPrefix(file, opt.Prefix) {
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return false
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}
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file = file[len(opt.Prefix):]
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if file != "" && file[0] != '/' {
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return false
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}
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}
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f, err := opt.FileSystem.Open(file)
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func (opts *Options) handle(w http.ResponseWriter, req *http.Request, fs http.FileSystem, file string) bool {
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// use clean to keep the file is a valid path with no . or ..
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f, err := fs.Open(path.Clean(file))
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if err != nil {
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// 404 requests to any known entries in `public`
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if path.Base(opts.Directory) == "public" {
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parts := strings.Split(file, "/")
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if len(parts) < 2 {
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if os.IsNotExist(err) {
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return false
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}
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for _, entry := range KnownPublicEntries {
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if entry == parts[1] {
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w.WriteHeader(404)
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w.WriteHeader(http.StatusInternalServerError)
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log.Error("[Static] Open %q failed: %v", file, err)
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return true
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}
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}
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}
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return false
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}
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defer f.Close()
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fi, err := f.Stat()
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if err != nil {
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log.Printf("[Static] %q exists, but fails to open: %v", file, err)
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w.WriteHeader(http.StatusInternalServerError)
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log.Error("[Static] %q exists, but fails to open: %v", file, err)
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return true
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}
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// Try to serve index file
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if fi.IsDir() {
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// Redirect if missing trailing slash.
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if !strings.HasSuffix(req.URL.Path, "/") {
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http.Redirect(w, req, path.Clean(req.URL.Path+"/"), http.StatusFound)
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w.WriteHeader(http.StatusNotFound)
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return true
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}
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f, err = opt.FileSystem.Open(file)
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if err != nil {
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return false // Discard error.
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}
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defer f.Close()
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fi, err = f.Stat()
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if err != nil || fi.IsDir() {
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return false
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}
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}
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if !opt.SkipLogging {
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log.Println("[Static] Serving " + file)
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}
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if httpcache.HandleFileETagCache(req, w, fi) {
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return true
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}
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ServeContent(w, req, fi, fi.ModTime(), f)
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serveContent(w, req, fi, fi.ModTime(), f)
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return true
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}
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@ -20,12 +20,8 @@ import (
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"code.gitea.io/gitea/modules/log"
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)
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// Static implements the static handler for serving assets.
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func Static(opts *Options) func(next http.Handler) http.Handler {
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opts.FileSystem = Assets
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// we don't need to pass the directory, because the directory var is only
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// used when in the options there is no FileSystem.
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return opts.staticHandler("")
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func fileSystem(dir string) http.FileSystem {
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return Assets
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}
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func Asset(name string) ([]byte, error) {
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@ -59,8 +55,8 @@ func AssetIsDir(name string) (bool, error) {
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}
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}
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// ServeContent serve http content
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func ServeContent(w http.ResponseWriter, req *http.Request, fi os.FileInfo, modtime time.Time, content io.ReadSeeker) {
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// serveContent serve http content
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func serveContent(w http.ResponseWriter, req *http.Request, fi os.FileInfo, modtime time.Time, content io.ReadSeeker) {
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encodings := parseAcceptEncoding(req.Header.Get("Accept-Encoding"))
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if encodings["gzip"] {
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if cf, ok := fi.(*vfsgen۰CompressedFileInfo); ok {
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@ -76,7 +72,7 @@ func ServeContent(w http.ResponseWriter, req *http.Request, fi os.FileInfo, modt
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_, err := rd.Seek(0, io.SeekStart) // rewind to output whole file
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if err != nil {
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log.Error("rd.Seek error: %v", err)
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http.Error(w, http.StatusText(500), 500)
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http.Error(w, http.StatusText(http.StatusInternalServerError), http.StatusInternalServerError)
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return
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}
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}
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@ -81,6 +81,11 @@ func InstallRoutes() *web.Route {
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r.Use(middle)
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}
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r.Use(public.AssetsHandler(&public.Options{
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Directory: path.Join(setting.StaticRootPath, "public"),
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Prefix: "/assets",
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}))
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r.Use(session.Sessioner(session.Options{
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Provider: setting.SessionConfig.Provider,
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ProviderConfig: setting.SessionConfig.ProviderConfig,
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@ -93,20 +98,6 @@ func InstallRoutes() *web.Route {
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}))
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r.Use(installRecovery())
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r.Use(public.Custom(
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&public.Options{
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SkipLogging: setting.DisableRouterLog,
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},
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))
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r.Use(public.Static(
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&public.Options{
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Directory: path.Join(setting.StaticRootPath, "public"),
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SkipLogging: setting.DisableRouterLog,
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Prefix: "/assets",
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},
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))
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r.Use(routers.InstallInit)
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r.Get("/", routers.Install)
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r.Post("/", web.Bind(forms.InstallForm{}), routers.InstallPost)
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@ -113,6 +113,8 @@ func commonMiddlewares() []func(http.Handler) http.Handler {
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return handlers
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}
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var corsHandler func(http.Handler) http.Handler
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// NormalRoutes represents non install routes
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func NormalRoutes() *web.Route {
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r := web.NewRoute()
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@ -120,6 +122,21 @@ func NormalRoutes() *web.Route {
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r.Use(middle)
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}
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if setting.CORSConfig.Enabled {
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corsHandler = cors.Handler(cors.Options{
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//Scheme: setting.CORSConfig.Scheme, // FIXME: the cors middleware needs scheme option
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AllowedOrigins: setting.CORSConfig.AllowDomain,
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//setting.CORSConfig.AllowSubdomain // FIXME: the cors middleware needs allowSubdomain option
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AllowedMethods: setting.CORSConfig.Methods,
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AllowCredentials: setting.CORSConfig.AllowCredentials,
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MaxAge: int(setting.CORSConfig.MaxAge.Seconds()),
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})
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} else {
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corsHandler = func(next http.Handler) http.Handler {
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return next
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}
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}
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r.Mount("/", WebRoutes())
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r.Mount("/api/v1", apiv1.Routes())
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r.Mount("/api/internal", private.Routes())
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@ -130,6 +147,12 @@ func NormalRoutes() *web.Route {
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func WebRoutes() *web.Route {
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routes := web.NewRoute()
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routes.Use(public.AssetsHandler(&public.Options{
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Directory: path.Join(setting.StaticRootPath, "public"),
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Prefix: "/assets",
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CorsHandler: corsHandler,
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}))
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routes.Use(session.Sessioner(session.Options{
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Provider: setting.SessionConfig.Provider,
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ProviderConfig: setting.SessionConfig.ProviderConfig,
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@ -143,22 +166,6 @@ func WebRoutes() *web.Route {
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routes.Use(Recovery())
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// TODO: we should consider if there is a way to mount these using r.Route as at present
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// these two handlers mean that every request has to hit these "filesystems" twice
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// before finally getting to the router. It allows them to override any matching router below.
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routes.Use(public.Custom(
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&public.Options{
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SkipLogging: setting.DisableRouterLog,
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},
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))
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routes.Use(public.Static(
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&public.Options{
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Directory: path.Join(setting.StaticRootPath, "public"),
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SkipLogging: setting.DisableRouterLog,
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Prefix: "/assets",
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},
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))
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// We use r.Route here over r.Use because this prevents requests that are not for avatars having to go through this additional handler
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routes.Route("/avatars/*", "GET, HEAD", storageHandler(setting.Avatar.Storage, "avatars", storage.Avatars))
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routes.Route("/repo-avatars/*", "GET, HEAD", storageHandler(setting.RepoAvatar.Storage, "repo-avatars", storage.RepoAvatars))
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@ -348,18 +355,7 @@ func RegisterRoutes(m *web.Route) {
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m.Post("/authorize", bindIgnErr(forms.AuthorizationForm{}), user.AuthorizeOAuth)
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}, ignSignInAndCsrf, reqSignIn)
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m.Get("/login/oauth/userinfo", ignSignInAndCsrf, user.InfoOAuth)
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if setting.CORSConfig.Enabled {
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m.Post("/login/oauth/access_token", cors.Handler(cors.Options{
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//Scheme: setting.CORSConfig.Scheme, // FIXME: the cors middleware needs scheme option
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AllowedOrigins: setting.CORSConfig.AllowDomain,
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//setting.CORSConfig.AllowSubdomain // FIXME: the cors middleware needs allowSubdomain option
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AllowedMethods: setting.CORSConfig.Methods,
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AllowCredentials: setting.CORSConfig.AllowCredentials,
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MaxAge: int(setting.CORSConfig.MaxAge.Seconds()),
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}), bindIgnErr(forms.AccessTokenForm{}), ignSignInAndCsrf, user.AccessTokenOAuth)
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} else {
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m.Post("/login/oauth/access_token", bindIgnErr(forms.AccessTokenForm{}), ignSignInAndCsrf, user.AccessTokenOAuth)
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}
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m.Post("/login/oauth/access_token", corsHandler, bindIgnErr(forms.AccessTokenForm{}), ignSignInAndCsrf, user.AccessTokenOAuth)
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m.Group("/user/settings", func() {
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m.Get("", userSetting.Profile)
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