GoToSocial/internal/web/customcss.go

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/*
GoToSocial
Copyright (C) 2021-2022 GoToSocial Authors admin@gotosocial.org
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 (
"errors"
"net/http"
"strings"
"github.com/gin-gonic/gin"
"github.com/superseriousbusiness/gotosocial/internal/api"
"github.com/superseriousbusiness/gotosocial/internal/config"
"github.com/superseriousbusiness/gotosocial/internal/gtserror"
)
func (m *Module) customCSSGETHandler(c *gin.Context) {
if !config.GetAccountsAllowCustomCSS() {
err := errors.New("accounts-allow-custom-css is not enabled on this instance")
api.ErrorHandler(c, gtserror.NewErrorNotFound(err), m.processor.InstanceGet)
return
}
if _, err := api.NegotiateAccept(c, api.TextCSS); err != nil {
api.ErrorHandler(c, gtserror.NewErrorNotAcceptable(err, err.Error()), m.processor.InstanceGet)
return
}
// usernames on our instance will always be lowercase
username := strings.ToLower(c.Param(usernameKey))
if username == "" {
err := errors.New("no account username specified")
api.ErrorHandler(c, gtserror.NewErrorBadRequest(err, err.Error()), m.processor.InstanceGet)
return
}
customCSS, errWithCode := m.processor.AccountGetCustomCSSForUsername(c.Request.Context(), username)
if errWithCode != nil {
api.ErrorHandler(c, errWithCode, m.processor.InstanceGet)
return
}
c.Header("Cache-Control", "no-cache")
c.Data(http.StatusOK, "text/css; charset=utf-8", []byte(customCSS))
}