GoToSocial/internal/api/auth/oob.go

114 lines
3.6 KiB
Go

/*
GoToSocial
Copyright (C) 2021-2023 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 auth
import (
"context"
"errors"
"fmt"
"net/http"
"github.com/gin-contrib/sessions"
"github.com/gin-gonic/gin"
apimodel "github.com/superseriousbusiness/gotosocial/internal/api/model"
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/gtserror"
"github.com/superseriousbusiness/gotosocial/internal/oauth"
)
func (m *Module) OobHandler(c *gin.Context) {
host := config.GetHost()
instance, errWithCode := m.processor.InstanceGet(c.Request.Context(), host)
if errWithCode != nil {
apiutil.ErrorHandler(c, errWithCode, m.processor.InstanceGet)
return
}
instanceGet := func(ctx context.Context, domain string) (*apimodel.Instance, gtserror.WithCode) {
return instance, nil
}
oobToken := c.Query("code")
if oobToken == "" {
err := errors.New("no 'code' query value provided in callback redirect")
apiutil.ErrorHandler(c, gtserror.NewErrorBadRequest(err, err.Error(), oauth.HelpfulAdvice), instanceGet)
return
}
s := sessions.Default(c)
errs := []string{}
scope, ok := s.Get(sessionScope).(string)
if !ok {
errs = append(errs, fmt.Sprintf("key %s was not found in session", sessionScope))
}
userID, ok := s.Get(sessionUserID).(string)
if !ok {
errs = append(errs, fmt.Sprintf("key %s was not found in session", sessionUserID))
}
if len(errs) != 0 {
errs = append(errs, oauth.HelpfulAdvice)
apiutil.ErrorHandler(c, gtserror.NewErrorBadRequest(errors.New("one or more missing keys on session during OobHandler"), errs...), m.processor.InstanceGet)
return
}
user, err := m.db.GetUserByID(c.Request.Context(), userID)
if err != nil {
m.clearSession(s)
safe := fmt.Sprintf("user with id %s could not be retrieved", userID)
var errWithCode gtserror.WithCode
if err == db.ErrNoEntries {
errWithCode = gtserror.NewErrorBadRequest(err, safe, oauth.HelpfulAdvice)
} else {
errWithCode = gtserror.NewErrorInternalError(err, safe, oauth.HelpfulAdvice)
}
apiutil.ErrorHandler(c, errWithCode, instanceGet)
return
}
acct, err := m.db.GetAccountByID(c.Request.Context(), user.AccountID)
if err != nil {
m.clearSession(s)
safe := fmt.Sprintf("account with id %s could not be retrieved", user.AccountID)
var errWithCode gtserror.WithCode
if err == db.ErrNoEntries {
errWithCode = gtserror.NewErrorBadRequest(err, safe, oauth.HelpfulAdvice)
} else {
errWithCode = gtserror.NewErrorInternalError(err, safe, oauth.HelpfulAdvice)
}
apiutil.ErrorHandler(c, errWithCode, instanceGet)
return
}
// we're done with the session now, so just clear it out
m.clearSession(s)
c.HTML(http.StatusOK, "oob.tmpl", gin.H{
"instance": instance,
"user": acct.Username,
"oobToken": oobToken,
"scope": scope,
})
}