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zeekayandHanzo Dev
aa87442fdd
Source files keep their SPDX-License-Identifier and Hanzo copyright line; the Gitea, Gogs and LFS Test Server copyrights they used to repeat now live once in NOTICE, alongside LICENSE. The header lint accepts any copyright line above the SPDX line, so it no longer demands an upstream one. Co-authored-by: Hanzo Dev <[email protected]>
95 lines
3.1 KiB
Go
95 lines
3.1 KiB
Go
// Copyright 2026 Hanzo AI, Inc. All rights reserved.
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// SPDX-License-Identifier: MIT
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package web
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import (
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"errors"
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"fmt"
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"image/png"
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"net/http"
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"os"
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"path"
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"strings"
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"github.com/hanzoai/git/modules/assetfs"
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"github.com/hanzoai/git/modules/avatar"
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"github.com/hanzoai/git/modules/httpcache"
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"github.com/hanzoai/git/modules/log"
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"github.com/hanzoai/git/modules/setting"
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"github.com/hanzoai/git/modules/storage"
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"github.com/hanzoai/git/modules/util"
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"github.com/hanzoai/git/modules/web/routing"
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)
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func avatarStorageHandler(storageSetting *setting.Storage, prefix string, objStore storage.ObjectStorage) http.HandlerFunc {
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prefix = strings.Trim(prefix, "/")
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funcInfo := routing.GetFuncInfo(avatarStorageHandler, prefix)
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exeModTime := assetfs.GetExecutableModTime()
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fallbackEtag := fmt.Sprintf(`"avatar-%s"`, exeModTime.Format("20060102150405"))
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handleError := func(w http.ResponseWriter, req *http.Request, avatarPath string, err error) bool {
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if err == nil {
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return false
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}
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if errors.Is(err, os.ErrNotExist) || errors.Is(err, util.ErrNotExist) {
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// if avatar doesn't exist, generate a random one and serve it with proper cache control headers
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w.Header().Set("Content-Type", "image/png")
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if !httpcache.HandleGenericETagPublicCache(req, w, fallbackEtag, &exeModTime) {
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if req.Method == http.MethodGet {
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img := avatar.RandomImageWithSize(96, []byte(avatarPath))
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_ = png.Encode(w, img)
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} // else: for HEAD request, just return the headers without body
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}
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} else {
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// for internal errors, log the error and return 500
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log.Error("Error when serving avatar %s: %s", req.URL.Path, err)
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http.Error(w, "unable to serve avatar image", http.StatusInternalServerError)
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}
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return true
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}
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return func(w http.ResponseWriter, req *http.Request) {
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defer routing.RecordFuncInfo(req.Context(), funcInfo)()
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avatarPath, ok := strings.CutPrefix(req.URL.Path, "/"+prefix+"/")
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if !ok {
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http.Error(w, "invalid avatar path", http.StatusBadRequest)
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return
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}
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avatarPath = util.PathJoinRelX(avatarPath)
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if avatarPath == "" || avatarPath == "." {
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http.Error(w, "not found", http.StatusNotFound)
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return
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}
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if storageSetting.ServeDirect() {
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// Old logic: no check for existence by Stat, so old code's "errors.Is(err, os.ErrNotExist)" didn't work.
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// So in theory, it doesn't work with the non-existing avatar fallback, it just gets the URL and redirects to it.
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// Checking "stat" requires one more request to the storage, which is inefficient.
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// Workaround: disable "SERVE_DIRECT". Leave the problem to the future.
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u, err := objStore.ServeDirectURL(avatarPath, path.Base(avatarPath), req.Method, nil)
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if handleError(w, req, avatarPath, err) {
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return
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}
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http.Redirect(w, req, u.String(), http.StatusTemporaryRedirect)
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return
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}
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fr, err := objStore.Open(avatarPath)
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if handleError(w, req, avatarPath, err) {
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return
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}
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defer fr.Close()
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fi, err := fr.Stat()
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if handleError(w, req, avatarPath, err) {
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return
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}
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httpcache.SetCacheControlInHeader(w.Header(), httpcache.CacheControlForPublicStatic())
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http.ServeContent(w, req, path.Base(avatarPath), fi.ModTime(), fr)
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}
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}
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