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			111 lines
		
	
	
	
		
			3.5 KiB
		
	
	
	
		
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			111 lines
		
	
	
	
		
			3.5 KiB
		
	
	
	
		
			Go
		
	
	
	
	
	
| /*
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|    GoToSocial
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|    Copyright (C) 2021-2022 GoToSocial Authors admin@gotosocial.org
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| 
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|    This program is free software: you can redistribute it and/or modify
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|    it under the terms of the GNU Affero General Public License as published by
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|    the Free Software Foundation, either version 3 of the License, or
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|    (at your option) any later version.
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| 
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|    This program is distributed in the hope that it will be useful,
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|    but WITHOUT ANY WARRANTY; without even the implied warranty of
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|    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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|    GNU Affero General Public License for more details.
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| 
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|    You should have received a copy of the GNU Affero General Public License
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|    along with this program.  If not, see <http://www.gnu.org/licenses/>.
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| */
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| 
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| package auth
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| 
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| import (
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| 	"context"
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| 	"errors"
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| 	"fmt"
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| 	"net/http"
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| 
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| 	"github.com/gin-contrib/sessions"
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| 	"github.com/gin-gonic/gin"
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| 	"github.com/superseriousbusiness/gotosocial/internal/api"
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| 	"github.com/superseriousbusiness/gotosocial/internal/api/model"
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| 	"github.com/superseriousbusiness/gotosocial/internal/config"
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| 	"github.com/superseriousbusiness/gotosocial/internal/db"
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| 	"github.com/superseriousbusiness/gotosocial/internal/gtserror"
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| 	"github.com/superseriousbusiness/gotosocial/internal/oauth"
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| )
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| 
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| func (m *Module) OobHandler(c *gin.Context) {
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| 	host := config.GetHost()
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| 	instance, errWithCode := m.processor.InstanceGet(c.Request.Context(), host)
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| 	if errWithCode != nil {
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| 		api.ErrorHandler(c, errWithCode, m.processor.InstanceGet)
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| 		return
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| 	}
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| 
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| 	instanceGet := func(ctx context.Context, domain string) (*model.Instance, gtserror.WithCode) { return instance, nil }
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| 
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| 	oobToken := c.Query("code")
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| 	if oobToken == "" {
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| 		err := errors.New("no 'code' query value provided in callback redirect")
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| 		api.ErrorHandler(c, gtserror.NewErrorBadRequest(err, err.Error(), oauth.HelpfulAdvice), instanceGet)
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| 		return
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| 	}
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| 
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| 	s := sessions.Default(c)
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| 
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| 	errs := []string{}
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| 
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| 	scope, ok := s.Get(sessionScope).(string)
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| 	if !ok {
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| 		errs = append(errs, fmt.Sprintf("key %s was not found in session", sessionScope))
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| 	}
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| 
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| 	userID, ok := s.Get(sessionUserID).(string)
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| 	if !ok {
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| 		errs = append(errs, fmt.Sprintf("key %s was not found in session", sessionUserID))
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| 	}
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| 
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| 	if len(errs) != 0 {
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| 		errs = append(errs, oauth.HelpfulAdvice)
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| 		api.ErrorHandler(c, gtserror.NewErrorBadRequest(errors.New("one or more missing keys on session during OobHandler"), errs...), m.processor.InstanceGet)
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| 		return
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| 	}
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| 
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| 	user, err := m.db.GetUserByID(c.Request.Context(), userID)
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| 	if err != nil {
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| 		m.clearSession(s)
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| 		safe := fmt.Sprintf("user with id %s could not be retrieved", userID)
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| 		var errWithCode gtserror.WithCode
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| 		if err == db.ErrNoEntries {
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| 			errWithCode = gtserror.NewErrorBadRequest(err, safe, oauth.HelpfulAdvice)
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| 		} else {
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| 			errWithCode = gtserror.NewErrorInternalError(err, safe, oauth.HelpfulAdvice)
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| 		}
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| 		api.ErrorHandler(c, errWithCode, instanceGet)
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| 		return
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| 	}
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| 
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| 	acct, err := m.db.GetAccountByID(c.Request.Context(), user.AccountID)
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| 	if err != nil {
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| 		m.clearSession(s)
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| 		safe := fmt.Sprintf("account with id %s could not be retrieved", user.AccountID)
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| 		var errWithCode gtserror.WithCode
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| 		if err == db.ErrNoEntries {
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| 			errWithCode = gtserror.NewErrorBadRequest(err, safe, oauth.HelpfulAdvice)
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| 		} else {
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| 			errWithCode = gtserror.NewErrorInternalError(err, safe, oauth.HelpfulAdvice)
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| 		}
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| 		api.ErrorHandler(c, errWithCode, instanceGet)
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| 		return
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| 	}
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| 
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| 	// we're done with the session now, so just clear it out
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| 	m.clearSession(s)
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| 
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| 	c.HTML(http.StatusOK, "oob.tmpl", gin.H{
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| 		"instance": instance,
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| 		"user":     acct.Username,
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| 		"oobToken": oobToken,
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| 		"scope":    scope,
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| 	})
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| }
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