81

我正在编写一个命令行工具来帮助我的网络应用程序。它需要密码才能连接到服务。我希望脚本显示密码提示,因此我不必将其作为命令行参数传递。

这很容易,但我希望它不会在输入密码时将密码回显到屏幕上。我怎样才能用 PHP 做到这一点?

在纯 PHP 中执行此操作(否system('stty'))并将字符替换为*.

编辑:

该脚本将在类似 unix 的系统(linux 或 mac)上运行。该脚本是用 PHP 编写的,并且很可能会保持这种状态。

另外,为了记录,stty这样做的方式是:

echo "Password: ";
system('stty -echo');
$password = trim(fgets(STDIN));
system('stty echo');
// add a new line since the users CR didn't echo
echo "\n";

我宁愿没有system()电话在那里。

4

11 回答 11

42

在sitepoint上找到。

function prompt_silent($prompt = "Enter Password:") {
  if (preg_match('/^win/i', PHP_OS)) {
    $vbscript = sys_get_temp_dir() . 'prompt_password.vbs';
    file_put_contents(
      $vbscript, 'wscript.echo(InputBox("'
      . addslashes($prompt)
      . '", "", "password here"))');
    $command = "cscript //nologo " . escapeshellarg($vbscript);
    $password = rtrim(shell_exec($command));
    unlink($vbscript);
    return $password;
  } else {
    $command = "/usr/bin/env bash -c 'echo OK'";
    if (rtrim(shell_exec($command)) !== 'OK') {
      trigger_error("Can't invoke bash");
      return;
    }
    $command = "/usr/bin/env bash -c 'read -s -p \""
      . addslashes($prompt)
      . "\" mypassword && echo \$mypassword'";
    $password = rtrim(shell_exec($command));
    echo "\n";
    return $password;
  }
}
于 2009-11-04T14:41:55.480 回答
11

根据您的环境(即,不在 Windows 上),您可以使用 ncurses 库(特别是ncurses_noecho()函数来停止键盘回显和ncurses_getch()来读取输入)来获取密码而不在屏幕上显示它。

于 2008-10-09T17:40:42.707 回答
9

您可以使用我的hiddeninput.exe文件来获得真正的隐藏输入,而不会在屏幕上的任何地方泄漏信息。

<?php

echo 'Enter password: ';
$password = exec('hiddeninput.exe');
echo PHP_EOL;

echo 'Password was: ' . $password . PHP_EOL;

如果您删除最后一个回显,则密码永远不会出现,但您可以将其用于验证。

于 2012-08-25T22:21:47.833 回答
6

以下方法适用于 Linux CLI,但不适用于 Windows CLI 或 Apache。它也仅适用于标准 Ascii 表中的字符(不过,使其与扩展字符集兼容并不需要太多时间)。

我已经输入了一些代码来防止复制和粘贴密码。如果删除了两个注释之间的位,则可以注入/粘贴密码。

我希望这可以帮助别人。

<?php

    echo("Password: ");
    $strPassword=getObscuredText();
    echo("\n");
    echo("You entered: ".$strPassword."\n");

    function getObscuredText($strMaskChar='*')
    {
        if(!is_string($strMaskChar) || $strMaskChar=='')
        {
            $strMaskChar='*';
        }
        $strMaskChar=substr($strMaskChar,0,1);
        readline_callback_handler_install('', function(){});
        $strObscured='';
        while(true)
        {
            $strChar = stream_get_contents(STDIN, 1);
            $intCount=0;
// Protect against copy and paste passwords
// Comment \/\/\/ to remove password injection protection
            $arrRead = array(STDIN);
            $arrWrite = NULL;
            $arrExcept = NULL;
            while (stream_select($arrRead, $arrWrite, $arrExcept, 0,0) && in_array(STDIN, $arrRead))            
            {
                stream_get_contents(STDIN, 1);
                $intCount++;
            }
//        /\/\/\
// End of protection against copy and paste passwords
            if($strChar===chr(10))
            {
                break;
            }
            if ($intCount===0)
            {
                if(ord($strChar)===127)
                {
                    if(strlen($strObscured)>0)
                    {
                        $strObscured=substr($strObscured,0,strlen($strObscured)-1);
                        echo(chr(27).chr(91)."D"." ".chr(27).chr(91)."D");
                    }
                }
                elseif ($strChar>=' ')
                {
                    $strObscured.=$strChar;
                    echo($strMaskChar);
                    //echo(ord($strChar));
                }
            }
        }
        readline_callback_handler_remove();
        return($strObscured);
    }
?>
于 2018-08-08T13:00:36.353 回答
3

这是适用于所有平台的最简单的解决方案:

function prompt($message = 'prompt: ', $hidden = false) {
    if (PHP_SAPI !== 'cli') {
        return false;
    }
    echo $message;
    $ret = 
        $hidden
        ? exec(
            PHP_OS === 'WINNT' || PHP_OS === 'WIN32'
            ? __DIR__ . '\prompt_win.bat'
            : 'read -s PW; echo $PW'
        )
        : rtrim(fgets(STDIN), PHP_EOL)
    ;
    if ($hidden) {
        echo PHP_EOL;
    }
    return $ret;
}

然后prompt_win.bat在同一目录下创建:

SetLocal DisableDelayedExpansion
Set "Line="
For /F %%# In ('"Prompt;$H & For %%# in (1) Do Rem"') Do (
    Set "BS=%%#"
)

:loop_start
    Set "Key="
    For /F "delims=" %%# In ('Xcopy /L /W "%~f0" "%~f0" 2^>Nul') Do (
        If Not Defined Key (
            Set "Key=%%#"
        )
    )
    Set "Key=%Key:~-1%"
    SetLocal EnableDelayedExpansion
    If Not Defined Key (
        Goto :loop_end
    )
    If %BS%==^%Key% (
        Set "Key="
        If Defined Line (
            Set "Line=!Line:~0,-1!"
        )
    )
    If Not Defined Line (
        EndLocal
        Set "Line=%Key%"
    ) Else (
        For /F "delims=" %%# In ("!Line!") Do (
            EndLocal
            Set "Line=%%#%Key%"
        )
    )
    Goto :loop_start
:loop_end

Echo;!Line!
于 2014-09-07T02:18:56.940 回答
2

我想如果不使用 stty -echo 就没有简单的方法(实际上我想不出任何方法)。如果您打算在 Windows 上运行它,您可以创建一个批处理脚本,为您的 php 脚本提供未回显的类型信息。

@echo off
cls
SET /P uname=Enter Username:
echo hP1X500P[PZBBBfh#b##fXf-V@`$fPf]f3/f1/5++u5>in.com
set /p password=Enter password :<nul
for /f “tokens=*” %%i in (’in.com’) do set password=%%i
del in.com
echo.
c:\php\php.exe d:\php\test.php %uname% “%password%”
Pause

示例取自http://www.indiangnu.org/2008/php-hide-user-input-using-batch-script-windows/

于 2008-10-09T15:28:45.657 回答
2

适用于具有 powershell 支持的每个 Windows 系统。(来源:http ://www.qxs.ch/2013/02/08/php-cli-password-prompts-on-windows-7/ )

<?php
// please set the path to your powershell, here it is: C:\Windows\system32\WindowsPowerShell\v1.0\powershell.exe
$pwd=shell_exec('C:\Windows\system32\WindowsPowerShell\v1.0\powershell.exe -Command "$Password=Read-Host -assecurestring \"Please enter your password\" ; $PlainPassword = [System.Runtime.InteropServices.Marshal]::PtrToStringAuto([System.Runtime.InteropServices.Marshal]::SecureStringToBSTR($Password)) ; echo $PlainPassword;"');
$pwd=explode("\n", $pwd); $pwd=$pwd[0];
echo "You have entered the following password: $pwd\n";
于 2016-09-03T18:19:37.177 回答
1

接受的答案还不够好。首先,Windows 解决方案不适用于 Windows 7 及更高版本。其他操作系统的解决方案取决于 Bash 和 bash 内置的“读取”。但是,有些系统不使用 Bash(例如 OpenBSD),这显然是行不通的。

在这篇博客中,我讨论了适用于几乎所有基于 Unix 的操作系统和从 95 到 8 的 Windows 的解决方案。Windows 解决方案使用基于 Win32 API 的 C 语言编写的外部程序。其他操作系统的解决方案使用外部命令“stty”。我还没有看到没有“stty”的基于 Unix 的系统

于 2013-06-21T15:26:35.180 回答
0

为什么不使用 SSH 连接?您可以将命令抽象出来,重定向输入/输出并拥有完全控制权。

您可以为某人提供一个具有尽可能少的权限的纯净外壳,并让密码与 SSH2::Connect() 一起发布以打开外壳。

我创建了一个很好的类来使用 php SSH2 扩展,也许它可以帮助你;(而且它还可以保护文件传输)

<?php

/**
 * SSH2
 * 
 * @package Pork
 * @author SchizoDuckie
 * @version 1.0
 * @access public
 */
class SSH2
{
    private $host;
    private $port;
    private $connection;
    private $timeout;
    private $debugMode;
    private $debugPointer;
    public $connected; 
    public $error;


    /**
     * SSH2::__construct()
     * 
     * @param mixed $host
     * @param integer $port
     * @param integer $timeout
     * @return
     */
    function __construct($host, $port=22, $timeout=10)
    {
        $this->host = $host;
        $this->port = $port;
        $this->timeout = 10;
        $this->error = 'not connected';
        $this->connection = false;
        $this->debugMode = Settings::Load()->->get('Debug', 'Debugmode');
        $this->debugPointer = ($this->debugMode) ? fopen('./logs/'.date('Y-m-d--H-i-s').'.log', 'w+') : false;
        $this->connected = false;

    }


    /**
     * SSH2::connect()
     * 
     * @param mixed $username
     * @param mixed $password
     * @return
     */
    function connect($username, $password)
    {
        $this->connection = ssh2_connect($this->host, $this->port);
        if (!$this->connection) return $this->error("Could not connect to {$this->host}:{$this->port}");
        $this->debug("Connected to {$this->host}:{$this->port}");
        $authenticated = ssh2_auth_password($this->connection, $username, $password);
        if(!$authenticated) return $this->error("Could not authenticate: {$username}, check your password");
        $this->debug("Authenticated successfully as {$username}");
        $this->connected = true;

        return true;
    }

    /**
     * SSH2::exec()
     *
     * @param mixed $command shell command to execute
     * @param bool $onAvailableFunction a function to handle any available data.
     * @param bool $blocking blocking or non-blocking mode. This 'hangs' php execution until the command has completed if you set it to true. If you just want to start an import and go on, use this icm onAvailableFunction and false
     * @return
     */
    function exec($command, $onAvailableFunction=false, $blocking=true)
    {
        $output = '';
        $stream = ssh2_exec($this->connection, $command);
        $this->debug("Exec: {$command}");
        if($onAvailableFunction !== false)
        {
            $lastReceived = time();
            $timeout =false;
            while (!feof($stream) && !$timeout)
            {
                $input = fgets($stream, 1024);
                if(strlen($input) >0)
                {
                    call_user_func($onAvailableFunction, $input);
                    $this->debug($input);
                    $lastReceived = time();
                }
                else
                {
                    if(time() - $lastReceived >= $this->timeout)
                    {
                        $timeout = true;
                        $this->error('Connection timed out');
                        return($this->error);
                    }
                }
            }
        }
        if($blocking === true && $onAvailableFunction === false)
        {
            stream_set_blocking($stream, true);
            $output = stream_get_contents($stream);
            $this->debug($output);
        }
        fclose($stream);
        return($output);
    }


    /**
     * SSH2::createDirectory()
     *
     * Creates a directory via sftp
     *
     * @param string $dirname
     * @return boolean success
     *  
     */
    function createDirectory($dirname)
    {
        $ftpconnection = ssh2_sftp ($this->connection);
        $dircreated = ssh2_sftp_mkdir($ftpconnection, $dirname, true);
        if(!$dircreated) 
        {
            $this->debug("Directory not created: ".$dirname);
        }
        return $dircreated;
    }

    public function listFiles($dirname)
    {
        $input = $this->exec(escapeshellcmd("ls  {$dirname}"));
        return(explode("\n", trim($input)));

    }

    public function sendFile($filename, $remotename)
    {
        $this->debug("sending {$filename} to {$remotename} ");
        if(file_exists($filename) && is_readable($filename))
        {
            $result = ssh2_scp_send($this->connection, $filename, $remotename, 0664);
        }
        else
        {
            $this->debug("Unable to read file : ".$filename);
            return false;
        }
        if(!$result) $this->debug("Failure uploading {$filename} to {$remotename}");
        return $result;
    }

    public function getFile($remotename, $localfile)
    {
        $this->debug("grabbing {$remotename} to {$localfile}");
        $result = ssh2_scp_recv($this->connection, $remotename, $localfile);

        if(!$result) $this->debug("Failure downloading {$remotename} to {$localfile}");
        return $result;
    }

    /**
     * SSH2::debug()
     * 
     * @param mixed $message
     * @return
     */
    function debug($message) 
    {
        if($this->debugMode)
        {
            fwrite($this->debugPointer, date('Y-m-d H:i:s')." : ".$message."\n");
        }
    }



    /**
     * SSH2::error()
     * 
     * @param mixed $errorMsg
     * @return
     */
    function error($errorMsg) 
    {
        $this->error = $errorMsg;
        $this->debug($errorMsg);
        return false;
    }   

    /**
     * SSH2::__destruct()
     * 
     * @return
     */
    function __destruct() 
    {
        if($this->connection){
            $this->connection = null;
        }
        if($this->debugMode && $this->debugPointer)
        {
            fclose($this->debugPointer);
        }
    }       


}

使用示例:

$settings = Settings::Load()->Get("SecureServer");
$ssh = new SSH2($settings['host']);
if( $ssh->connect($settings['username'], $settings['password']))
{
    echo $ssh->exec("ls -la ".$settings['path'], false, true);  
    flush();    
}
于 2008-10-09T18:03:28.810 回答
0

理论上你可以使用 stream_set_blocking() 来做到这一点,但看起来有一些 PHP 错误管理 STDIN。

看: http://bugs.php.net/bug.php? id = 34972 http://bugs.php.net/bug.php?id=36030

自己试试:

echo "Enter Password: ";
$stdin = fopen('php://stdin','r');
// Trying to disable stream blocking
stream_set_blocking($stdin, FALSE) or die ('Failed to disable stdin blocking');
// Trying to set stream timeout to 1sec
stream_set_timeout ($stdin, 1) or die ('Failed to enable stdin timeout');
于 2008-11-18T13:12:13.153 回答
0
system('stty -echo');

禁用当前终端回显,并且:

system('stty echo');

重新启用它。前后设置fgets

于 2021-12-02T19:45:59.440 回答