mirror of
https://github.com/superseriousbusiness/gotosocial.git
synced 2024-11-30 20:31:09 +00:00
12b6cdcd8c
* [bugfix] Set Vary header correctly on cache-control * Prefer activitypub types on AP endpoints * use immutable on file server, vary by range * vary auth on Accept
75 lines
2.3 KiB
Go
75 lines
2.3 KiB
Go
// GoToSocial
|
|
// Copyright (C) GoToSocial Authors admin@gotosocial.org
|
|
// SPDX-License-Identifier: AGPL-3.0-or-later
|
|
//
|
|
// This program is free software: you can redistribute it and/or modify
|
|
// it under the terms of the GNU Affero General Public License as published by
|
|
// the Free Software Foundation, either version 3 of the License, or
|
|
// (at your option) any later version.
|
|
//
|
|
// This program is distributed in the hope that it will be useful,
|
|
// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
// GNU Affero General Public License for more details.
|
|
//
|
|
// You should have received a copy of the GNU Affero General Public License
|
|
// along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
package middleware
|
|
|
|
import (
|
|
"strings"
|
|
|
|
"github.com/gin-gonic/gin"
|
|
)
|
|
|
|
type CacheControlConfig struct {
|
|
// Slice of Cache-Control directives, which will be
|
|
// joined comma-separated and served as the value of
|
|
// the Cache-Control header.
|
|
//
|
|
// If no directives are set, the Cache-Control header
|
|
// will not be sent in the response at all.
|
|
//
|
|
// For possible Cache-Control directive values, see:
|
|
// https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Cache-Control
|
|
Directives []string
|
|
|
|
// Slice of Vary header values, which will be joined
|
|
// comma-separated and served as the value of the Vary
|
|
// header in the response.
|
|
//
|
|
// If no Vary header values are supplied, then the
|
|
// Vary header will be omitted in the response.
|
|
//
|
|
// https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Vary
|
|
Vary []string
|
|
}
|
|
|
|
// CacheControl returns a new gin middleware which allows
|
|
// routes to control cache settings on response headers.
|
|
func CacheControl(config CacheControlConfig) gin.HandlerFunc {
|
|
if len(config.Directives) == 0 {
|
|
// No Cache-Control directives provided,
|
|
// return empty/stub function.
|
|
return func(c *gin.Context) {}
|
|
}
|
|
|
|
// Cache control is usually done on hot paths so
|
|
// parse vars outside of the returned function.
|
|
var (
|
|
ccHeader = strings.Join(config.Directives, ", ")
|
|
varyHeader = strings.Join(config.Vary, ", ")
|
|
)
|
|
|
|
if varyHeader == "" {
|
|
return func(c *gin.Context) {
|
|
c.Header("Cache-Control", ccHeader)
|
|
}
|
|
}
|
|
|
|
return func(c *gin.Context) {
|
|
c.Header("Cache-Control", ccHeader)
|
|
c.Header("Vary", varyHeader)
|
|
}
|
|
}
|