gotosocial/internal/web/web.go
Victor Dyotte 9609c4550d
[feature] Add global instance CSS customization setting ()
Allow instance admins to add custom CSS that will affect
every page of their instance.

This is done with a new CustomCSS instance setting that
works pretty much exactly like the Users CustomCSS property.
This custom CSS is then requested for every page load.
User styles/themes take precedence over this CSS.

Co-authored-by: tobi <tobi.smethurst@protonmail.com>
2024-12-02 12:24:48 +01:00

134 lines
6.5 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 web
import (
"context"
"net/http"
"net/url"
"path/filepath"
"codeberg.org/gruf/go-cache/v3"
"github.com/gin-gonic/gin"
apiutil "github.com/superseriousbusiness/gotosocial/internal/api/util"
"github.com/superseriousbusiness/gotosocial/internal/config"
"github.com/superseriousbusiness/gotosocial/internal/db"
"github.com/superseriousbusiness/gotosocial/internal/log"
"github.com/superseriousbusiness/gotosocial/internal/middleware"
"github.com/superseriousbusiness/gotosocial/internal/processing"
"github.com/superseriousbusiness/gotosocial/internal/router"
"github.com/superseriousbusiness/gotosocial/internal/uris"
)
const (
confirmEmailPath = "/" + uris.ConfirmEmailPath
profileGroupPath = "/@:username"
statusPath = "/statuses/:" + apiutil.WebStatusIDKey // leave out the '/@:username' prefix as this will be served within the profile group
tagsPath = "/tags/:" + apiutil.TagNameKey
customCSSPath = profileGroupPath + "/custom.css"
instanceCustomCSSPath = "/custom.css"
rssFeedPath = profileGroupPath + "/feed.rss"
assetsPathPrefix = "/assets"
distPathPrefix = assetsPathPrefix + "/dist"
themesPathPrefix = assetsPathPrefix + "/themes"
settingsPathPrefix = "/settings"
settingsPanelGlob = settingsPathPrefix + "/*panel"
userPanelPath = settingsPathPrefix + "/user"
adminPanelPath = settingsPathPrefix + "/admin"
signupPath = "/signup"
cacheControlHeader = "Cache-Control" // https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Cache-Control
cacheControlNoCache = "no-cache" // https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Cache-Control#response_directives
ifModifiedSinceHeader = "If-Modified-Since" // https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/If-Modified-Since
ifNoneMatchHeader = "If-None-Match" // https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/If-None-Match
eTagHeader = "ETag" // https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/ETag
lastModifiedHeader = "Last-Modified" // https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Last-Modified
cssFA = assetsPathPrefix + "/Fork-Awesome/css/fork-awesome.min.css"
cssAbout = distPathPrefix + "/about.css"
cssIndex = distPathPrefix + "/index.css"
cssStatus = distPathPrefix + "/status.css"
cssThread = distPathPrefix + "/thread.css"
cssProfile = distPathPrefix + "/profile.css"
cssSettings = distPathPrefix + "/settings-style.css"
cssTag = distPathPrefix + "/tag.css"
jsFrontend = distPathPrefix + "/frontend.js" // Progressive enhancement frontend JS.
jsSettings = distPathPrefix + "/settings.js" // Settings panel React application.
)
type Module struct {
processor *processing.Processor
eTagCache cache.Cache[string, eTagCacheEntry]
isURIBlocked func(context.Context, *url.URL) (bool, error)
}
func New(db db.DB, processor *processing.Processor) *Module {
return &Module{
processor: processor,
eTagCache: newETagCache(),
isURIBlocked: db.IsURIBlocked,
}
}
func (m *Module) Route(r *router.Router, mi ...gin.HandlerFunc) {
// Group all static files from assets dir at /assets,
// so that they can use the same cache control middleware.
webAssetsAbsFilePath, err := filepath.Abs(config.GetWebAssetBaseDir())
if err != nil {
log.Panicf(nil, "error getting absolute path of assets dir: %s", err)
}
fs := fileSystem{http.Dir(webAssetsAbsFilePath)}
assetsGroup := r.AttachGroup(assetsPathPrefix)
assetsGroup.Use(m.assetsCacheControlMiddleware(fs))
assetsGroup.Use(mi...)
assetsGroup.StaticFS("/", fs)
// handlers that serve profiles and statuses should use the SignatureCheck
// middleware, so that requests with content-type application/activity+json
// can still be served
profileGroup := r.AttachGroup(profileGroupPath)
profileGroup.Use(mi...)
profileGroup.Use(middleware.SignatureCheck(m.isURIBlocked), middleware.CacheControl(middleware.CacheControlConfig{
Directives: []string{"no-store"},
}))
profileGroup.Handle(http.MethodGet, "", m.profileGETHandler) // use empty path here since it's the base of the group
profileGroup.Handle(http.MethodGet, statusPath, m.threadGETHandler)
// Attach individual web handlers which require no specific middlewares
r.AttachHandler(http.MethodGet, "/", m.indexHandler) // front-page
r.AttachHandler(http.MethodGet, settingsPathPrefix, m.SettingsPanelHandler)
r.AttachHandler(http.MethodGet, settingsPanelGlob, m.SettingsPanelHandler)
r.AttachHandler(http.MethodGet, customCSSPath, m.customCSSGETHandler)
r.AttachHandler(http.MethodGet, instanceCustomCSSPath, m.instanceCustomCSSGETHandler)
r.AttachHandler(http.MethodGet, rssFeedPath, m.rssFeedGETHandler)
r.AttachHandler(http.MethodGet, confirmEmailPath, m.confirmEmailGETHandler)
r.AttachHandler(http.MethodPost, confirmEmailPath, m.confirmEmailPOSTHandler)
r.AttachHandler(http.MethodGet, robotsPath, m.robotsGETHandler)
r.AttachHandler(http.MethodGet, aboutPath, m.aboutGETHandler)
r.AttachHandler(http.MethodGet, domainBlockListPath, m.domainBlockListGETHandler)
r.AttachHandler(http.MethodGet, tagsPath, m.tagGETHandler)
r.AttachHandler(http.MethodGet, signupPath, m.signupGETHandler)
r.AttachHandler(http.MethodPost, signupPath, m.signupPOSTHandler)
// Attach redirects from old endpoints to current ones for backwards compatibility
r.AttachHandler(http.MethodGet, "/auth/edit", func(c *gin.Context) { c.Redirect(http.StatusMovedPermanently, userPanelPath) })
r.AttachHandler(http.MethodGet, "/user", func(c *gin.Context) { c.Redirect(http.StatusMovedPermanently, userPanelPath) })
r.AttachHandler(http.MethodGet, "/admin", func(c *gin.Context) { c.Redirect(http.StatusMovedPermanently, adminPanelPath) })
}