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Simplify Gothic to use our session store instead of creating a differ…
…ent store (go-gitea#17507) * Simplify Gothic to use our session store instead of creating a different store We have been using xormstore to provide a separate session store for our OAuth2 logins however, this relies on using gorilla context and some doubling of our session storing. We can however, simplify and simply use our own chi-based session store. Thus removing a cookie and some of the weirdness with missing contexts. Signed-off-by: Andrew Thornton <art27@cantab.net> * as per review Signed-off-by: Andrew Thornton <art27@cantab.net> * as per review Signed-off-by: Andrew Thornton <art27@cantab.net> * Handle MaxTokenLength Signed-off-by: Andrew Thornton <art27@cantab.net> * oops Signed-off-by: Andrew Thornton <art27@cantab.net> Co-authored-by: techknowlogick <techknowlogick@gitea.io> Co-authored-by: Lauris BH <lauris@nix.lv>
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Stelios Malathouras
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,91 @@ | ||
| // 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. | ||
|
|
||
| package oauth2 | ||
|
|
||
| import ( | ||
| "encoding/gob" | ||
| "fmt" | ||
| "net/http" | ||
|
|
||
| "code.gitea.io/gitea/modules/log" | ||
| chiSession "gitea.com/go-chi/session" | ||
| "github.com/gorilla/sessions" | ||
| ) | ||
|
|
||
| // SessionsStore creates a gothic store from our session | ||
| type SessionsStore struct { | ||
| maxLength int64 | ||
| } | ||
|
|
||
| // Get should return a cached session. | ||
| func (st *SessionsStore) Get(r *http.Request, name string) (*sessions.Session, error) { | ||
| return st.getOrNew(r, name, false) | ||
| } | ||
|
|
||
| // 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) | ||
| } | ||
|
|
||
| // 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 | ||
|
|
||
| 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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