publickeyget.go (2467B)
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 publickey 19 20 import ( 21 "encoding/json" 22 "errors" 23 "net/http" 24 "strings" 25 26 "github.com/gin-gonic/gin" 27 apiutil "github.com/superseriousbusiness/gotosocial/internal/api/util" 28 "github.com/superseriousbusiness/gotosocial/internal/gtserror" 29 ) 30 31 // PublicKeyGETHandler should be served at eg https://example.org/users/:username/main-key. 32 // 33 // The goal here is to return a MINIMAL activitypub representation of an account 34 // in the form of a vocab.ActivityStreamsPerson. The account will only contain the id, 35 // public key, username, and type of the account. 36 func (m *Module) PublicKeyGETHandler(c *gin.Context) { 37 // usernames on our instance are always lowercase 38 requestedUsername := strings.ToLower(c.Param(UsernameKey)) 39 if requestedUsername == "" { 40 err := errors.New("no username specified in request") 41 apiutil.ErrorHandler(c, gtserror.NewErrorBadRequest(err, err.Error()), m.processor.InstanceGetV1) 42 return 43 } 44 45 format, err := apiutil.NegotiateAccept(c, apiutil.HTMLOrActivityPubHeaders...) 46 if err != nil { 47 apiutil.ErrorHandler(c, gtserror.NewErrorNotAcceptable(err, err.Error()), m.processor.InstanceGetV1) 48 return 49 } 50 51 if format == string(apiutil.TextHTML) { 52 // redirect to the user's profile 53 c.Redirect(http.StatusSeeOther, "/@"+requestedUsername) 54 return 55 } 56 57 resp, errWithCode := m.processor.Fedi().UserGet(c.Request.Context(), requestedUsername, c.Request.URL) 58 if errWithCode != nil { 59 apiutil.ErrorHandler(c, errWithCode, m.processor.InstanceGetV1) 60 return 61 } 62 63 b, err := json.Marshal(resp) 64 if err != nil { 65 apiutil.ErrorHandler(c, gtserror.NewErrorInternalError(err), m.processor.InstanceGetV1) 66 return 67 } 68 69 c.Data(http.StatusOK, format, b) 70 }