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// Copyright (C) 2019-2023 Algorand, Inc.
// This file is part of go-algorand
//
// go-algorand 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.
//
// go-algorand 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 go-algorand. If not, see <https://www.gnu.org/licenses/>.
package session
import (
"context"
"time"
"github.com/algorand/go-algorand/daemon/kmd/config"
"github.com/algorand/go-algorand/daemon/kmd/wallet"
"github.com/algorand/go-deadlock"
)
type walletHandle struct {
secret []byte
expires time.Time
wallet wallet.Wallet
}
// Manager allows users to initialize wallets by knowing their passwords, and
// stores the initialized wallets in memory where the user can access them by
// an ephemeral wallet handle token
type Manager struct {
Initialized bool
walletHandles map[string]walletHandle
sessionLifetime time.Duration
Kill context.CancelFunc
ctx context.Context
mux deadlock.Mutex
}
// MakeManager initializes and returns a *Manager using the kmd global
// configuration
func MakeManager(cfg config.KMDConfig) *Manager {
ctx, cancel := context.WithCancel(context.Background())
sm := &Manager{
Initialized: true,
walletHandles: make(map[string]walletHandle),
sessionLifetime: time.Duration(cfg.SessionLifetimeSecs * uint64(time.Second)),
Kill: cancel,
ctx: ctx,
}
go sm.cleanUpExpiredHandles()
return sm
}
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