forgejo/routers/web/user/avatar.go
silverwind 9fa6bdb64e
Add Cache-Control to avatar redirects (#16973)
* Add Cache-Control to avatar redirects

This does seem to do the trick to make the Avatar redirects cachable
in Chrome.

In Firefox, it does not seem to work, thought and I found no way to
suppress the requests to the original URLs, I even tried setting an
Etag to no avail.

Related discussion in https://github.com/go-gitea/gitea/issues/16964.

Co-authored-by: zeripath <art27@cantab.net>
2021-09-06 23:05:44 +02:00

105 lines
2.6 KiB
Go

// Copyright 2019 The Gitea Authors. All rights reserved.
// Use of this source code is governed by a MIT-style
// license that can be found in the LICENSE file.
package user
import (
"errors"
"net/url"
"path"
"strconv"
"strings"
"code.gitea.io/gitea/models"
"code.gitea.io/gitea/modules/context"
"code.gitea.io/gitea/modules/httpcache"
"code.gitea.io/gitea/modules/log"
"code.gitea.io/gitea/modules/setting"
)
func cacheableRedirect(ctx *context.Context, location string) {
ctx.Resp.Header().Set("Cache-Control", httpcache.GetCacheControl())
ctx.Redirect(location)
}
// Avatar redirect browser to user avatar of requested size
func Avatar(ctx *context.Context) {
userName := ctx.Params(":username")
size, err := strconv.Atoi(ctx.Params(":size"))
if err != nil {
ctx.ServerError("Invalid avatar size", err)
return
}
log.Debug("Asked avatar for user %v and size %v", userName, size)
var user *models.User
if strings.ToLower(userName) != "ghost" {
user, err = models.GetUserByName(userName)
if err != nil {
if models.IsErrUserNotExist(err) {
ctx.ServerError("Requested avatar for invalid user", err)
} else {
ctx.ServerError("Retrieving user by name", err)
}
return
}
} else {
user = models.NewGhostUser()
}
cacheableRedirect(ctx, user.RealSizedAvatarLink(size))
}
// AvatarByEmailHash redirects the browser to the appropriate Avatar link
func AvatarByEmailHash(ctx *context.Context) {
var err error
hash := ctx.Params(":hash")
if len(hash) == 0 {
ctx.ServerError("invalid avatar hash", errors.New("hash cannot be empty"))
return
}
var email string
email, err = models.GetEmailForHash(hash)
if err != nil {
ctx.ServerError("invalid avatar hash", err)
return
}
if len(email) == 0 {
cacheableRedirect(ctx, models.DefaultAvatarLink())
return
}
size := ctx.FormInt("size")
if size == 0 {
size = models.DefaultAvatarSize
}
var avatarURL *url.URL
if setting.EnableFederatedAvatar && setting.LibravatarService != nil {
avatarURL, err = models.LibravatarURL(email)
if err != nil {
avatarURL, err = url.Parse(models.DefaultAvatarLink())
if err != nil {
ctx.ServerError("invalid default avatar url", err)
return
}
}
} else if !setting.DisableGravatar {
copyOfGravatarSourceURL := *setting.GravatarSourceURL
avatarURL = &copyOfGravatarSourceURL
avatarURL.Path = path.Join(avatarURL.Path, hash)
} else {
avatarURL, err = url.Parse(models.DefaultAvatarLink())
if err != nil {
ctx.ServerError("invalid default avatar url", err)
return
}
}
cacheableRedirect(ctx, models.MakeFinalAvatarURL(avatarURL, size))
}