blocks|key|3279233|text|您可以通过执行stty+-echo来关闭echo，然后在读取口令后执行stty+echo来重新打开它|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|3279234|entityMap^0|7|A|Z|9|0^^$0|@$1|2|3|4|5|6|7|H|8|@$9|I|A|J|B|C]|$9|K|A|L|B|C]]|D|@]|E|$]]|$1|F|3|-4|5|6|7|M|8|@]|D|@]|E|$]]]|G|$]]

you can do this by execing <code>stty -echo</code> to turn off echo and then <code>stty echo</code> after reading in the password to turn it back on

blocks|key|321587|text|下面是完成这项任务的最好方法之一。首先通过go+get+golang.org/x/term获取term包|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|321588|package+main

import+(
++++"bufio"
++++"fmt"
++++"os"
++++"strings"
++++"syscall"

++++"golang.org/x/term"
)

func+main()+{
++++username,+password,+_+:=+credentials()
++++fmt.Printf("Username:+%25s,+Password:+%25s\n",+username,+password)
}

func+credentials()+(string,+string,+error)+{
++++reader+:=+bufio.NewReader(os.Stdin)

++++fmt.Print("Enter+Username:+")
++++username,+err+:=+reader.ReadString('\n')
++++if+err+!=+nil+{
++++++++return+"",+"",+err
++++}

++++fmt.Print("Enter+Password:+")
++++bytePassword,+err+:=+term.ReadPassword(int(syscall.Stdin))
++++if+err+!=+nil+{
++++++++return+"",+"",+err
++++}

++++password+:=+string(bytePassword)
++++return+strings.TrimSpace(username),+strings.TrimSpace(password),+nil
}|code-block|syntax|javascript|321589|http://play.golang.org/p/l-9IP1mrhA|321590|entityMap|0|LINK|mutability|MUTABLE|url^0|L|O|1B|4|0|0|0|Z|0|0^^$0|@$1|2|3|4|5|6|7|T|8|@$9|U|A|V|B|C]|$9|W|A|X|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|Y|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|Z|8|@]|D|@$9|10|A|11|1|12]]|E|$]]|$1|M|3|-4|5|6|7|13|8|@]|D|@]|E|$]]]|N|$O|$5|P|Q|R|E|$S|L]]]]

The following is one of best ways to get it done.
First get <code>term</code> package by <code>go get golang.org/x/term</code>
<pre class="lang-golang prettyprint-override"><code>package main

import (
 &quot;bufio&quot;
 &quot;fmt&quot;
 &quot;os&quot;
 &quot;strings&quot;
 &quot;syscall&quot;

 &quot;golang.org/x/term&quot;
)

func main() {
 username, password, _ := credentials()
 fmt.Printf(&quot;Username: %s, Password: %s\n&quot;, username, password)
}

func credentials() (string, string, error) {
 reader := bufio.NewReader(os.Stdin)

 fmt.Print(&quot;Enter Username: &quot;)
 username, err := reader.ReadString('\n')
 if err != nil {
 return &quot;&quot;, &quot;&quot;, err
 }

 fmt.Print(&quot;Enter Password: &quot;)
 bytePassword, err := term.ReadPassword(int(syscall.Stdin))
 if err != nil {
 return &quot;&quot;, &quot;&quot;, err
 }

 password := string(bytePassword)
 return strings.TrimSpace(username), strings.TrimSpace(password), nil
}
</code></pre>
<a href="http://play.golang.org/p/l-9IP1mrhA" rel="noreferrer">http://play.golang.org/p/l-9IP1mrhA</a>

blocks|key|3279270|text|刚在#go-nuts上看到了一封邮件。有人写了一个非常简单的go包来使用。你可以在这里找到它：https://github.com/howeyc/gopass|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|3279271|大概是这样的：|3279272|package+main

import+"fmt"
import+"github.com/howeyc/gopass"

func+main()+{
++++fmt.Printf("Password:+")
++++pass+:=+gopass.GetPasswd()
++++//+Do+something+with+pass
}|code-block|syntax|javascript|3279273|entityMap|0|LINK|mutability|MUTABLE|url|https://github.com/howeyc/gopass^0|1B|W|0|0|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@]|9|@$A|T|B|U|1|V]]|C|$]]|$1|D|3|E|5|6|7|W|8|@]|9|@]|C|$]]|$1|F|3|G|5|H|7|X|8|@]|9|@]|C|$I|J]]|$1|K|3|-4|5|6|7|Y|8|@]|9|@]|C|$]]]|L|$M|$5|N|O|P|C|$Q|R]]]]

Just saw a mail in #go-nuts maillist. There is someone who wrote quite a simple go package to be used. You can find it here: <a href="https://github.com/howeyc/gopass" rel="noreferrer">https://github.com/howeyc/gopass</a> 

It something like that:

<pre><code>package main

import "fmt"
import "github.com/howeyc/gopass"

func main() {
 fmt.Printf("Password: ")
 pass := gopass.GetPasswd()
 // Do something with pass
}
</code></pre>

blocks|key|316656|text|从Go+~v1.11开始，有一个官方包golang.org/x/term，它取代了废弃的crypto/ssh/terminal。除了其他功能之外，它还具有函数。|type|unstyled|depth|inlineStyleRanges|offset|length|style|BOLD|CODE|entityRanges|data|316657|示例用法：|316658|package+main
import+(
++++"fmt"
++++"os"
++++"syscall"
++++"golang.org/x/term"
)
func+main()+{
++++fmt.Print("Password:+")
++++bytepw,+err+:=+term.ReadPassword(int(syscall.Stdin))
++++if+err+!=+nil+{
++++++++os.Exit(1)
++++}
++++pass+:=+string(bytepw)
++++fmt.Printf("\nYou've+entered:+%25q\n",+pass)
}|code-block|syntax|javascript|316659|entityMap^0|J|H|J|H|18|J|0|0|0^^$0|@$1|2|3|4|5|6|7|P|8|@$9|Q|A|R|B|C]|$9|S|A|T|B|D]|$9|U|A|V|B|D]]|E|@]|F|$]]|$1|G|3|H|5|6|7|W|8|@]|E|@]|F|$]]|$1|I|3|J|5|K|7|X|8|@]|E|@]|F|$L|M]]|$1|N|3|-4|5|6|7|Y|8|@]|E|@]|F|$]]]|O|$]]

Since Go ~v1.11 there is an official package <code>golang.org/x/term</code> which replaces the deprecated <code>crypto/ssh/terminal</code>. It has, among other things, the function <a href="https://pkg.go.dev/golang.org/x/term#ReadPassword" rel="noreferrer"><code>term.ReadPassword</code></a>.
Example usage:
<pre><code>package main
import (
 &quot;fmt&quot;
 &quot;os&quot;
 &quot;syscall&quot;
 &quot;golang.org/x/term&quot;
)
func main() {
 fmt.Print(&quot;Password: &quot;)
 bytepw, err := term.ReadPassword(int(syscall.Stdin))
 if err != nil {
 os.Exit(1)
 }
 pass := string(bytepw)
 fmt.Printf(&quot;\nYou've entered: %q\n&quot;, pass)
}
</code></pre>

blocks|key|3066381|text|我有一个类似的用例，下面的代码片段很适合我。如果你仍然被困在这里，请随意尝试。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3066382|import+(
++++"fmt"
++++"golang.org/x/crypto/ssh/terminal"

)

func+main()+{
++++fmt.Printf("Now,+please+type+in+the+password+(mandatory):+")
++++password,+_+:=+terminal.ReadPassword(0)

++++fmt.Printf("Password+is+:+%25s",+password)
}|code-block|syntax|javascript|3066383|当然，您需要事先使用go+get安装终端包。|offset|length|style|CODE|3066384|entityMap^0|0|0|A|6|0^^$0|@$1|2|3|4|5|6|7|O|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|Q|8|@$I|R|J|S|K|L]]|9|@]|A|$]]|$1|M|3|-4|5|6|7|T|8|@]|9|@]|A|$]]]|N|$]]

I had a similar usecase and the following code snippet works well for me. Feel free to try this if you are still stuck here.

<pre><code>import (
 "fmt"
 "golang.org/x/crypto/ssh/terminal"

)

func main() {
 fmt.Printf("Now, please type in the password (mandatory): ")
 password, _ := terminal.ReadPassword(0)

 fmt.Printf("Password is : %s", password)
}
</code></pre>

Of course, you need to install terminal package using <code>go get</code> beforehand.

blocks|key|318655|text|这是我使用Go1.6.2开发的一个解决方案，您可能会发现它很有用。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|318656|它只使用以下标准包：bufio、fmt、os、strings和syscall。更具体地说，它使用syscall.ForkExec()和syscall.Wait4()调用stty来禁用/启用终端回显。|offset|length|style|CODE|318657|我已经在Linux和BSD+(Mac)上进行了测试。它不能在windows上工作。|318658|//+getPassword+-+Prompt+for+password.+Use+stty+to+disable+echoing.
import+(+"bufio";+"fmt";+"os";+"strings";+"syscall"+)
func+getPassword(prompt+string)+string+{
++++fmt.Print(prompt)

++++//+Common+settings+and+variables+for+both+stty+calls.
++++attrs+:=+syscall.ProcAttr{
++++++++Dir:+++"",
++++++++Env:+++[]string{},
++++++++Files:+[]uintptr{os.Stdin.Fd(),+os.Stdout.Fd(),+os.Stderr.Fd()},
++++++++Sys:+++nil}
++++var+ws+syscall.WaitStatus

++++//+Disable+echoing.
++++pid,+err+:=+syscall.ForkExec(
++++++++"/bin/stty",
++++++++[]string{"stty",+"-echo"},
++++++++&attrs)
++++if+err+!=+nil+{
++++++++panic(err)
++++}

++++//+Wait+for+the+stty+process+to+complete.
++++_,+err+=+syscall.Wait4(pid,+&ws,+0,+nil)
++++if+err+!=+nil+{
++++++++panic(err)
++++}

++++//+Echo+is+disabled,+now+grab+the+data.
++++reader+:=+bufio.NewReader(os.Stdin)
++++text,+err+:=+reader.ReadString('\n')
++++if+err+!=+nil+{
++++++++panic(err)
++++}

++++//+Re-enable+echo.
++++pid,+err+=+syscall.ForkExec(
++++++++"/bin/stty",
++++++++[]string{"stty",+"echo"},
++++++++&attrs)
++++if+err+!=+nil+{
++++++++panic(err)
++++}

++++//+Wait+for+the+stty+process+to+complete.
++++_,+err+=+syscall.Wait4(pid,+&ws,+0,+nil)
++++if+err+!=+nil+{
++++++++panic(err)
++++}

++++return+strings.TrimSpace(text)
}|code-block|syntax|javascript|318659|entityMap^0|0|A|5|G|3|K|2|N|7|V|7|1C|I|1V|F|0|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|R|8|@$D|S|E|T|F|G]|$D|U|E|V|F|G]|$D|W|E|X|F|G]|$D|Y|E|Z|F|G]|$D|10|E|11|F|G]|$D|12|E|13|F|G]|$D|14|E|15|F|G]]|9|@]|A|$]]|$1|H|3|I|5|6|7|16|8|@]|9|@]|A|$]]|$1|J|3|K|5|L|7|17|8|@]|9|@]|A|$M|N]]|$1|O|3|-4|5|6|7|18|8|@]|9|@]|A|$]]]|P|$]]

Here is a solution that I developed using Go1.6.2 that you might find useful.

It only uses the following standard packages: <code>bufio</code>, <code>fmt</code>, <code>os</code>, <code>strings</code> and <code>syscall</code>. More specifically, it uses <code>syscall.ForkExec()</code> and <code>syscall.Wait4()</code> to invoke stty to disable/enable terminal echo.

I have tested it on Linux and BSD (Mac). It will not work on windows.

<pre><code>// getPassword - Prompt for password. Use stty to disable echoing.
import ( "bufio"; "fmt"; "os"; "strings"; "syscall" )
func getPassword(prompt string) string {
 fmt.Print(prompt)

 // Common settings and variables for both stty calls.
 attrs := syscall.ProcAttr{
 Dir: "",
 Env: []string{},
 Files: []uintptr{os.Stdin.Fd(), os.Stdout.Fd(), os.Stderr.Fd()},
 Sys: nil}
 var ws syscall.WaitStatus

 // Disable echoing.
 pid, err := syscall.ForkExec(
 "/bin/stty",
 []string{"stty", "-echo"},
 &amp;attrs)
 if err != nil {
 panic(err)
 }

 // Wait for the stty process to complete.
 _, err = syscall.Wait4(pid, &amp;ws, 0, nil)
 if err != nil {
 panic(err)
 }

 // Echo is disabled, now grab the data.
 reader := bufio.NewReader(os.Stdin)
 text, err := reader.ReadString('\n')
 if err != nil {
 panic(err)
 }

 // Re-enable echo.
 pid, err = syscall.ForkExec(
 "/bin/stty",
 []string{"stty", "echo"},
 &amp;attrs)
 if err != nil {
 panic(err)
 }

 // Wait for the stty process to complete.
 _, err = syscall.Wait4(pid, &amp;ws, 0, nil)
 if err != nil {
 panic(err)
 }

 return strings.TrimSpace(text)
}
</code></pre>

blocks|key|319532|text|需要通过Go+ForkExec()函数启动stty：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|319533|package+main

import+(
++++os++++++"os"
++++bufio+++"bufio"
++++fmt+++++"fmt"
++++str+++++"strings"
)

func+main()+{
++++fmt.Println();
++++if+passwd,+err+:=+Getpasswd("Enter+password:+");+err+==+nil+{
++++++++fmt.Printf("\n\nPassword:+'%25s'\n",passwd)
++++}
}

func+Getpasswd(prompt+string)+(passwd+string,+err+os.Error)+{
++++fmt.Print(prompt);
++++const+stty_arg0++=+"/bin/stty";
++++stty_argv_e_off+:=+[]string{"stty","-echo"};
++++stty_argv_e_on++:=+[]string{"stty","echo"};
++++const+exec_cwdir+=+"";
++++fd+:=+[]*os.File{os.Stdin,os.Stdout,os.Stderr};
++++pid,+err+:=+os.ForkExec(stty_arg0,stty_argv_e_off,nil,exec_cwdir,fd);
++++if+err+!=+nil+{
++++++++return+passwd,+os.NewError(fmt.Sprintf("Failed+turning+off+console+echo+for+password+entry:\n\t%25s",err))
++++}
++++rd+:=+bufio.NewReader(os.Stdin);
++++os.Wait(pid,0);
++++line,+err+:=+rd.ReadString('\n');
++++if+err+==+nil+{
++++++++passwd+=+str.TrimSpace(line)
++++}+else+{
++++++++err+=+os.NewError(fmt.Sprintf("Failed+during+password+entry:+%25s",err))
++++}
++++pid,+e+:=+os.ForkExec(stty_arg0,stty_argv_e_on,nil,exec_cwdir,fd);
++++if+e+==+nil+{
++++++++os.Wait(pid,0)
++++}+else+if+err+==+nil+{
++++++++err+=+os.NewError(fmt.Sprintf("Failed+turning+on+console+echo+post+password+entry:\n\t%25s",e))
++++}
++++return+passwd,+err
}|code-block|syntax|javascript|319534|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

Required launching stty via Go ForkExec() function:

<pre><code>package main

import (
 os "os"
 bufio "bufio"
 fmt "fmt"
 str "strings"
)

func main() {
 fmt.Println();
 if passwd, err := Getpasswd("Enter password: "); err == nil {
 fmt.Printf("\n\nPassword: '%s'\n",passwd)
 }
}

func Getpasswd(prompt string) (passwd string, err os.Error) {
 fmt.Print(prompt);
 const stty_arg0 = "/bin/stty";
 stty_argv_e_off := []string{"stty","-echo"};
 stty_argv_e_on := []string{"stty","echo"};
 const exec_cwdir = "";
 fd := []*os.File{os.Stdin,os.Stdout,os.Stderr};
 pid, err := os.ForkExec(stty_arg0,stty_argv_e_off,nil,exec_cwdir,fd);
 if err != nil {
 return passwd, os.NewError(fmt.Sprintf("Failed turning off console echo for password entry:\n\t%s",err))
 }
 rd := bufio.NewReader(os.Stdin);
 os.Wait(pid,0);
 line, err := rd.ReadString('\n');
 if err == nil {
 passwd = str.TrimSpace(line)
 } else {
 err = os.NewError(fmt.Sprintf("Failed during password entry: %s",err))
 }
 pid, e := os.ForkExec(stty_arg0,stty_argv_e_on,nil,exec_cwdir,fd);
 if e == nil {
 os.Wait(pid,0)
 } else if err == nil {
 err = os.NewError(fmt.Sprintf("Failed turning on console echo post password entry:\n\t%s",e))
 }
 return passwd, err
}
</code></pre>

blocks|key|3066265|text|以下是特定于Linux的版本：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3066266|func+terminalEcho(show+bool)+{
++++//+Enable+or+disable+echoing+terminal+input.+This+is+useful+specifically+for
++++//+when+users+enter+passwords.
++++//+calling+terminalEcho(true)+turns+on+echoing+(normal+mode)
++++//+calling+terminalEcho(false)+hides+terminal+input.
++++var+termios+=+&syscall.Termios{}
++++var+fd+=+os.Stdout.Fd()

++++if+_,+_,+err+:=+syscall.Syscall(syscall.SYS_IOCTL,+fd,
++++++++syscall.TCGETS,+uintptr(unsafe.Pointer(termios)));+err+!=+0+{
++++++++return
++++}

++++if+show+{
++++++++termios.Lflag+%7C=+syscall.ECHO
++++}+else+{
++++++++termios.Lflag+&%5E=+syscall.ECHO
++++}

++++if+_,+_,+err+:=+syscall.Syscall(syscall.SYS_IOCTL,+fd,
++++++++uintptr(syscall.TCSETS),
++++++++uintptr(unsafe.Pointer(termios)));+err+!=+0+{
++++++++return
++++}
}|code-block|syntax|javascript|3066267|因此，要使用它：|3066268|fmt.Print("password:+")

terminalEcho(false)
var+pw+string
fmt.Scanln(&pw)
terminalEcho(true)
fmt.Println("")|3066269|它是特定于linux的TCGETS系统调用。OSX和Windows的syscall值不同。|3066270|entityMap^0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|Q|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|R|8|@]|9|@]|A|$E|F]]|$1|K|3|L|5|6|7|S|8|@]|9|@]|A|$]]|$1|M|3|-4|5|6|7|T|8|@]|9|@]|A|$]]]|N|$]]

Here is a version specific to Linux:

<pre><code>func terminalEcho(show bool) {
 // Enable or disable echoing terminal input. This is useful specifically for
 // when users enter passwords.
 // calling terminalEcho(true) turns on echoing (normal mode)
 // calling terminalEcho(false) hides terminal input.
 var termios = &amp;syscall.Termios{}
 var fd = os.Stdout.Fd()

 if _, _, err := syscall.Syscall(syscall.SYS_IOCTL, fd,
 syscall.TCGETS, uintptr(unsafe.Pointer(termios))); err != 0 {
 return
 }

 if show {
 termios.Lflag |= syscall.ECHO
 } else {
 termios.Lflag &amp;^= syscall.ECHO
 }

 if _, _, err := syscall.Syscall(syscall.SYS_IOCTL, fd,
 uintptr(syscall.TCSETS),
 uintptr(unsafe.Pointer(termios))); err != 0 {
 return
 }
}
</code></pre>

So to use it:

<pre><code>fmt.Print("password: ")

terminalEcho(false)
var pw string
fmt.Scanln(&amp;pw)
terminalEcho(true)
fmt.Println("")
</code></pre>

It's the TCGETS syscall that is linux specific. There are different syscall values for OSX and Windows.

blocks|key|316641|text|您也可以使用https://github.com/peterh/liner包的PasswordPrompt函数。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|316642|entityMap|0|LINK|mutability|MUTABLE|url|https://github.com/peterh/liner^0|13|E|6|V|0|0^^$0|@$1|2|3|4|5|6|7|N|8|@$9|O|A|P|B|C]]|D|@$9|Q|A|R|1|S]]|E|$]]|$1|F|3|-4|5|6|7|T|8|@]|D|@]|E|$]]]|G|$H|$5|I|J|K|E|$L|M]]]]

You could also use <code>PasswordPrompt</code> function of <a href="https://github.com/peterh/liner" rel="nofollow">https://github.com/peterh/liner</a> package.

blocks|key|318574|text|您可以使用os.File对象(或os.Stdin变量)中的Read方法获得所需的行为。下面的示例程序将读取一行文本(以按return键结束)，但在fmt.Printf调用之前不会回显它。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|318575|package+main

import+"fmt"
import+"os"

func+main()+{
++var+input+[]byte+=+make(+[]byte,+100+);
++os.Stdin.Read(+input+);
++fmt.Printf(+"%25s",+input+);
}|code-block|syntax|javascript|318576|如果您想要更高级的行为，您可能必须使用Go+C-wrapper实用程序，并为低级api调用创建一些包装器。|318577|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|L|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|M|8|@]|9|@]|A|$]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

You can get the behavior you want with the Read method from the os.File object (or the os.Stdin variable). The following sample program will read a line of text (terminated with by pressing the return key) but won't echo it until the fmt.Printf call.

<pre><code>package main

import "fmt"
import "os"

func main() {
 var input []byte = make( []byte, 100 );
 os.Stdin.Read( input );
 fmt.Printf( "%s", input );
}
</code></pre>

If you want more advanced behavior, you're probably going to have to use the Go C-wrapper utilities and create some wrappers for low-level api calls.

Situation:

I want to get a password entry from the <code>stdin</code> console - without echoing what the user types. Is there something comparable to <code>getpasswd</code> functionality in Go?

What I tried:

I tried using <code>syscall.Read</code>, but it echoes what is typed.

getpasswd functionality in Go?

Windows

Linux

情况：我想从stdin控制台获得密码输入-而不是回显用户键入的内容。Go中是否有可与getpasswd功能相媲美的功能？我尝试过的东西：我尝试使用syscall.Read，但它会回显输入的内容。

问Go中的getpasswd功能？
EN

回答 10

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问Go中的getpasswd功能？
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