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Simplify Gothic to use our session store instead of creating a different store #17507
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// Copyright 2021 The Gitea Authors. All rights reserved. | ||
// Use of this source code is governed by a MIT-style | ||
// license that can be found in the LICENSE file. | ||
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package oauth2 | ||
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import ( | ||
"encoding/gob" | ||
"fmt" | ||
"net/http" | ||
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"code.gitea.io/gitea/modules/log" | ||
chiSession "gitea.com/go-chi/session" | ||
"github.com/gorilla/sessions" | ||
) | ||
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// SessionsStore creates a gothic store from our session | ||
type SessionsStore struct { | ||
maxLength int64 | ||
} | ||
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// Get should return a cached session. | ||
func (st *SessionsStore) Get(r *http.Request, name string) (*sessions.Session, error) { | ||
return st.getOrNew(r, name, false) | ||
} | ||
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// New should create and return a new session. | ||
// | ||
// Note that New should never return a nil session, even in the case of | ||
// an error if using the Registry infrastructure to cache the session. | ||
func (st *SessionsStore) New(r *http.Request, name string) (*sessions.Session, error) { | ||
return st.getOrNew(r, name, true) | ||
} | ||
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// getOrNew gets the session from the chi-session if it exists. Override permits the overriding of an unexpected object. | ||
func (st *SessionsStore) getOrNew(r *http.Request, name string, override bool) (*sessions.Session, error) { | ||
chiStore := chiSession.GetSession(r) | ||
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session := sessions.NewSession(st, name) | ||
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rawData := chiStore.Get(name) | ||
if rawData != nil { | ||
oldSession, ok := rawData.(*sessions.Session) | ||
if ok { | ||
session.ID = oldSession.ID | ||
session.IsNew = oldSession.IsNew | ||
session.Options = oldSession.Options | ||
session.Values = oldSession.Values | ||
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return session, nil | ||
} else if !override { | ||
log.Error("Unexpected object in session at name: %s: %v", name, rawData) | ||
return nil, fmt.Errorf("unexpected object in session at name: %s", name) | ||
} | ||
} | ||
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session.ID = chiStore.ID() // Simply copy the session id from the chi store | ||
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return session, chiStore.Set(name, session) | ||
} | ||
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// Save should persist session to the underlying store implementation. | ||
func (st *SessionsStore) Save(r *http.Request, w http.ResponseWriter, session *sessions.Session) error { | ||
chiStore := chiSession.GetSession(r) | ||
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if err := chiStore.Set(session.Name(), session); err != nil { | ||
return err | ||
} | ||
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if st.maxLength > 0 { | ||
sizeWriter := &sizeWriter{} | ||
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_ = gob.NewEncoder(sizeWriter).Encode(session) | ||
if sizeWriter.size > st.maxLength { | ||
return fmt.Errorf("encode session: Data too long: %d > %d", sizeWriter.size, st.maxLength) | ||
} | ||
} | ||
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return chiStore.Release() | ||
} | ||
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type sizeWriter struct { | ||
size int64 | ||
} | ||
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func (s *sizeWriter) Write(data []byte) (int, error) { | ||
s.size += int64(len(data)) | ||
return len(data), nil | ||
} | ||
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var _ (sessions.Store) = &SessionsStore{} |
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