70 lines
2.7 KiB
Go
70 lines
2.7 KiB
Go
// GoToSocial
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// Copyright (C) GoToSocial Authors admin@gotosocial.org
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// SPDX-License-Identifier: AGPL-3.0-or-later
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Affero General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Affero General Public License for more details.
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//
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// You should have received a copy of the GNU Affero General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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package api
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import (
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"github.com/gin-gonic/gin"
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"github.com/superseriousbusiness/gotosocial/internal/api/fileserver"
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"github.com/superseriousbusiness/gotosocial/internal/config"
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"github.com/superseriousbusiness/gotosocial/internal/middleware"
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"github.com/superseriousbusiness/gotosocial/internal/processing"
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"github.com/superseriousbusiness/gotosocial/internal/router"
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)
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type Fileserver struct {
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fileserver *fileserver.Module
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}
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func (f *Fileserver) Route(r router.Router, m ...gin.HandlerFunc) {
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fileserverGroup := r.AttachGroup("fileserver")
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// Attach middlewares appropriate for this group.
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fileserverGroup.Use(m...)
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// If we're using local storage or proxying s3, we can set a
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// long max-age + immutable on all file requests to reflect
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// that we never host different files at the same URL (since
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// ULIDs are generated per piece of media), so we can
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// easily prevent clients having to fetch files repeatedly.
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//
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// If we *are* using non-proxying s3, however, the max age
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// must be set dynamically within the request handler,
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// based on how long the signed URL has left to live before
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// it expires. This ensures that clients won't cache expired
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// links. This is done within fileserver/servefile.go, so we
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// should not set the middleware here in that case.
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//
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// See:
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//
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// - https://developer.mozilla.org/en-US/docs/Web/HTTP/Caching#avoiding_revalidation
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// - https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Cache-Control#immutable
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if config.GetStorageBackend() == "local" || config.GetStorageS3Proxy() {
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fileserverGroup.Use(middleware.CacheControl(middleware.CacheControlConfig{
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Directives: []string{"private", "max-age=604800", "immutable"},
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Vary: []string{"Range"}, // Cache partial ranges separately.
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}))
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}
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f.fileserver.Route(fileserverGroup.Handle)
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}
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func NewFileserver(p *processing.Processor) *Fileserver {
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return &Fileserver{
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fileserver: fileserver.New(p),
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}
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}
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