81 lines
2.4 KiB
Go
81 lines
2.4 KiB
Go
// Mgmt
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// Copyright (C) 2013-2024+ James Shubin and the project contributors
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// Written by James Shubin <james@shubin.ca> and the project contributors
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//
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// This program 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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// This program 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 this program. If not, see <https://www.gnu.org/licenses/>.
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//
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// Additional permission under GNU GPL version 3 section 7
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//
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// If you modify this program, or any covered work, by linking or combining it
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// with embedded mcl code and modules (and that the embedded mcl code and
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// modules which link with this program, contain a copy of their source code in
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// the authoritative form) containing parts covered by the terms of any other
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// license, the licensors of this program grant you additional permission to
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// convey the resulting work. Furthermore, the licensors of this program grant
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// the original author, James Shubin, additional permission to update this
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// additional permission if he deems it necessary to achieve the goals of this
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// additional permission.
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//go:build !root
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package password
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import (
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"context"
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"fmt"
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"os"
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"os/signal"
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"sync"
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"syscall"
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"time"
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)
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func ExampleReadPasswordCtx() {
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// Put this in a main function and it will not have the ioctl error!
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fmt.Println("hello")
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defer fmt.Println("exiting...")
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wg := &sync.WaitGroup{}
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defer wg.Wait()
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ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
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defer cancel()
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// If we exit without getting a chance to reset the terminal, it might
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// be borked!
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ch := make(chan os.Signal, 1+1) // must have buffer for max number of signals
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signal.Notify(ch, syscall.SIGTERM, os.Interrupt)
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wg.Add(1)
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go func() {
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defer wg.Done()
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select {
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case <-ch:
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cancel()
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case <-ctx.Done():
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}
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}()
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password, err := ReadPasswordCtx(ctx)
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if err != nil {
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fmt.Printf("error: %+v\n", err)
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return
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}
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fmt.Printf("password is: %s\n", string(password))
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// Output: hello
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// error: inappropriate ioctl for device
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// exiting...
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}
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