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// Copyright 2021 The Gitea Authors. All rights reserved.
// SPDX-License-Identifier: MIT
package oauth2
import (
"context"
"encoding/gob"
"net/http"
"sync"
"code.gitea.io/gitea/models/auth"
"code.gitea.io/gitea/models/db"
"code.gitea.io/gitea/modules/log"
"code.gitea.io/gitea/modules/optional"
"code.gitea.io/gitea/modules/setting"
"github.com/google/uuid"
"github.com/gorilla/sessions"
"github.com/markbates/goth/gothic"
)
var gothRWMutex = sync.RWMutex{}
// UsersStoreKey is the key for the store
const UsersStoreKey = "gitea-oauth2-sessions"
// ProviderHeaderKey is the HTTP header key
const ProviderHeaderKey = "gitea-oauth2-provider"
// Init initializes the oauth source
func Init(ctx context.Context) error {
if err := InitSigningKey(); err != nil {
return err
}
// Lock our mutex
gothRWMutex.Lock()
gob.Register(&sessions.Session{})
gothic.Store = &SessionsStore{
maxLength: int64(setting.OAuth2.MaxTokenLength),
}
gothic.SetState = func(req *http.Request) string {
return uuid.New().String()
}
gothic.GetProviderName = func(req *http.Request) (string, error) {
return req.Header.Get(ProviderHeaderKey), nil
}
// Unlock our mutex
gothRWMutex.Unlock()
return initOAuth2Sources(ctx)
}
// ResetOAuth2 clears existing OAuth2 providers and loads them from DB
func ResetOAuth2(ctx context.Context) error {
ClearProviders()
return initOAuth2Sources(ctx)
}
// initOAuth2Sources is used to load and register all active OAuth2 providers
func initOAuth2Sources(ctx context.Context) error {
authSources, err := db.Find[auth.Source](ctx, auth.FindSourcesOptions{
IsActive: optional.Some(true),
LoginType: auth.OAuth2,
})
if err != nil {
return err
}
for _, source := range authSources {
oauth2Source, ok := source.Cfg.(*Source)
if !ok {
continue
}
err := oauth2Source.RegisterSource()
if err != nil {
log.Critical("Unable to register source: %s due to Error: %v.", source.Name, err)
}
}
return nil
}
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