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// GoToSocial
// Copyright (C) GoToSocial Authors admin@gotosocial.org
// SPDX-License-Identifier: AGPL-3.0-or-later
//
// 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 (
"errors"
apiutil "code.superseriousbusiness.org/gotosocial/internal/api/util"
"code.superseriousbusiness.org/gotosocial/internal/gtserror"
"code.superseriousbusiness.org/gotosocial/internal/gtsmodel"
"code.superseriousbusiness.org/gotosocial/internal/oauth"
"github.com/gin-contrib/sessions"
"github.com/gin-gonic/gin"
)
func (m *Module) mustClearSession(s sessions.Session) {
s.Clear()
m.mustSaveSession(s)
}
func (m *Module) mustSaveSession(s sessions.Session) {
if err := s.Save(); err != nil {
panic(err)
}
}
// mustUserFromSession returns a *gtsmodel.User by checking the
// session for a user id and fetching the user from the database.
//
// On failure, the function clears session state, writes an internal
// error to the response writer, and returns nil. Callers should always
// return immediately if receiving nil back from this function!
func (m *Module) mustUserFromSession(
c *gin.Context,
s sessions.Session,
) *gtsmodel.User {
// Try "userid" key first, fall
// back to "userid_awaiting_2fa".
var userID string
for _, key := range [2]string{
sessionUserID,
sessionUserIDAwaiting2FA,
} {
var ok bool
userID, ok = s.Get(key).(string)
if ok && userID != "" {
// Got it.
break
}
}
if userID == "" {
const safe = "neither userid nor userid_awaiting_2fa keys found in session"
m.clearSessionWithInternalError(c, s, errors.New(safe), safe, oauth.HelpfulAdvice)
return nil
}
user, err := m.state.DB.GetUserByID(c.Request.Context(), userID)
if err != nil {
safe := "db error getting user " + userID
m.clearSessionWithInternalError(c, s, err, safe, oauth.HelpfulAdvice)
return nil
}
return user
}
// mustAppFromSession returns a *gtsmodel.Application by checking the
// session for an application keyid and fetching the app from the database.
//
// On failure, the function clears session state, writes an internal
// error to the response writer, and returns nil. Callers should always
// return immediately if receiving nil back from this function!
func (m *Module) mustAppFromSession(
c *gin.Context,
s sessions.Session,
) *gtsmodel.Application {
clientID, ok := s.Get(sessionClientID).(string)
if !ok {
const safe = "key client_id not found in session"
m.clearSessionWithInternalError(c, s, errors.New(safe), safe, oauth.HelpfulAdvice)
return nil
}
app, err := m.state.DB.GetApplicationByClientID(c.Request.Context(), clientID)
if err != nil {
safe := "db error getting app for clientID " + clientID
m.clearSessionWithInternalError(c, s, err, safe, oauth.HelpfulAdvice)
return nil
}
return app
}
// mustStringFromSession returns the string value
// corresponding to the given session key, if any is set.
//
// On failure (nothing set), the function clears session
// state, writes an internal error to the response writer,
// and returns nil. Callers should always return immediately
// if receiving nil back from this function!
func (m *Module) mustStringFromSession(
c *gin.Context,
s sessions.Session,
key string,
) string {
v, ok := s.Get(key).(string)
if !ok {
safe := "key " + key + " not found in session"
m.clearSessionWithInternalError(c, s, errors.New(safe), safe, oauth.HelpfulAdvice)
return ""
}
return v
}
func (m *Module) clearSessionWithInternalError(
c *gin.Context,
s sessions.Session,
err error,
helpText ...string,
) {
m.mustClearSession(s)
errWithCode := gtserror.NewErrorInternalError(err, helpText...)
apiutil.ErrorHandler(c, errWithCode, m.processor.InstanceGetV1)
}
func (m *Module) clearSessionWithBadRequest(
c *gin.Context,
s sessions.Session,
err error,
helpText ...string,
) {
m.mustClearSession(s)
errWithCode := gtserror.NewErrorBadRequest(err, helpText...)
apiutil.ErrorHandler(c, errWithCode, m.processor.InstanceGetV1)
}
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