mirror of
https://github.com/ProtonMail/proton-bridge.git
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71 lines
1.8 KiB
Go
71 lines
1.8 KiB
Go
// Copyright (c) 2020 Proton Technologies AG
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//
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// This file is part of ProtonMail Bridge.
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//
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// ProtonMail Bridge is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// ProtonMail Bridge is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with ProtonMail Bridge. If not, see <https://www.gnu.org/licenses/>.
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package confirmer
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import (
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"errors"
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"sync"
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"time"
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)
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// NOTE: For now, Confirmer only supports bool values but it could easily be made generic.
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// Confirmer is used to ask for some value (e.g. a confirmation from a GUI element)
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// in a threadsafe manner and retrieve that value later.
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type Confirmer struct {
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requests map[string]*Request
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locker sync.Locker
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}
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func New() *Confirmer {
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return &Confirmer{
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requests: make(map[string]*Request),
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locker: &sync.Mutex{},
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}
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}
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// NewRequest creates a new request object that waits up to the given amount of time for the result.
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func (c *Confirmer) NewRequest(timeout time.Duration) *Request {
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c.locker.Lock()
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defer c.locker.Unlock()
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req := newRequest(timeout)
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c.requests[req.ID()] = req
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return req
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}
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// SetResult sets the result value of the request with the given ID.
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func (c *Confirmer) SetResult(id string, value bool) error {
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c.locker.Lock()
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defer c.locker.Unlock()
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req, ok := c.requests[id]
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if !ok {
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return errors.New("no such request")
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}
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req.ch <- value
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close(req.ch)
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delete(c.requests, id)
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return nil
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}
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