customcss.go (2223B)
1 // GoToSocial 2 // Copyright (C) GoToSocial Authors admin@gotosocial.org 3 // SPDX-License-Identifier: AGPL-3.0-or-later 4 // 5 // This program is free software: you can redistribute it and/or modify 6 // it under the terms of the GNU Affero General Public License as published by 7 // the Free Software Foundation, either version 3 of the License, or 8 // (at your option) any later version. 9 // 10 // This program is distributed in the hope that it will be useful, 11 // but WITHOUT ANY WARRANTY; without even the implied warranty of 12 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 13 // GNU Affero General Public License for more details. 14 // 15 // You should have received a copy of the GNU Affero General Public License 16 // along with this program. If not, see <http://www.gnu.org/licenses/>. 17 18 package web 19 20 import ( 21 "errors" 22 "net/http" 23 "strings" 24 25 "github.com/gin-gonic/gin" 26 apiutil "github.com/superseriousbusiness/gotosocial/internal/api/util" 27 "github.com/superseriousbusiness/gotosocial/internal/config" 28 "github.com/superseriousbusiness/gotosocial/internal/gtserror" 29 ) 30 31 const textCSSUTF8 = string(apiutil.TextCSS + "; charset=utf-8") 32 33 func (m *Module) customCSSGETHandler(c *gin.Context) { 34 if !config.GetAccountsAllowCustomCSS() { 35 err := errors.New("accounts-allow-custom-css is not enabled on this instance") 36 apiutil.WebErrorHandler(c, gtserror.NewErrorNotFound(err), m.processor.InstanceGetV1) 37 return 38 } 39 40 if _, err := apiutil.NegotiateAccept(c, apiutil.TextCSS); err != nil { 41 apiutil.WebErrorHandler(c, gtserror.NewErrorNotAcceptable(err, err.Error()), m.processor.InstanceGetV1) 42 return 43 } 44 45 // usernames on our instance will always be lowercase 46 username := strings.ToLower(c.Param(usernameKey)) 47 if username == "" { 48 err := errors.New("no account username specified") 49 apiutil.WebErrorHandler(c, gtserror.NewErrorBadRequest(err, err.Error()), m.processor.InstanceGetV1) 50 return 51 } 52 53 customCSS, errWithCode := m.processor.Account().GetCustomCSSForUsername(c.Request.Context(), username) 54 if errWithCode != nil { 55 apiutil.WebErrorHandler(c, errWithCode, m.processor.InstanceGetV1) 56 return 57 } 58 59 c.Header(cacheControlHeader, cacheControlNoCache) 60 c.Data(http.StatusOK, textCSSUTF8, []byte(customCSS)) 61 }