Viewing file:  CliPrompt.php (3.49 KB) -rwxrwxr-x
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<?php
/*
* This file is part of CLI Prompt.
*
* (c) Jordi Boggiano <j.boggiano@seld.be>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Seld\CliPrompt;
class CliPrompt
{
/**
* Prompts the user for input and shows what they type
*
* @return string
*/
public static function prompt()
{
$stdin = fopen('php://stdin', 'r');
$answer = self::trimAnswer(fgets($stdin, 4096));
fclose($stdin);
return $answer;
}
/**
* Prompts the user for input and hides what they type
*
* @param bool $allowFallback If prompting fails for any reason and this is set to true the prompt
* will be done using the regular prompt() function, otherwise a
* \RuntimeException is thrown.
* @return string
* @throws RuntimeException on failure to prompt, unless $allowFallback is true
*/
public static function hiddenPrompt($allowFallback = false)
{
// handle windows
if (defined('PHP_WINDOWS_VERSION_BUILD')) {
// fallback to hiddeninput executable
$exe = __DIR__.'\\..\\res\\hiddeninput.exe';
// handle code running from a phar
if ('phar:' === substr(__FILE__, 0, 5)) {
$tmpExe = sys_get_temp_dir().'/hiddeninput.exe';
// use stream_copy_to_stream instead of copy
// to work around https://bugs.php.net/bug.php?id=64634
$source = fopen($exe, 'r');
$target = fopen($tmpExe, 'w+');
stream_copy_to_stream($source, $target);
fclose($source);
fclose($target);
unset($source, $target);
$exe = $tmpExe;
}
$output = shell_exec($exe);
// clean up
if (isset($tmpExe)) {
unlink($tmpExe);
}
if ($output !== null) {
// output a newline to be on par with the regular prompt()
echo PHP_EOL;
return self::trimAnswer($output);
}
}
if (file_exists('/usr/bin/env')) {
// handle other OSs with bash/zsh/ksh/csh if available to hide the answer
$test = "/usr/bin/env %s -c 'echo OK' 2> /dev/null";
foreach (array('bash', 'zsh', 'ksh', 'csh', 'sh') as $sh) {
if ('OK' === rtrim(shell_exec(sprintf($test, $sh)))) {
$shell = $sh;
break;
}
}
if (isset($shell)) {
$readCmd = ($shell === 'csh') ? 'set mypassword = $<' : 'read -r mypassword';
$command = sprintf("/usr/bin/env %s -c 'stty -echo; %s; stty echo; echo \$mypassword'", $shell, $readCmd);
$output = shell_exec($command);
if ($output !== null) {
// output a newline to be on par with the regular prompt()
echo PHP_EOL;
return self::trimAnswer($output);
}
}
}
// not able to hide the answer
if (!$allowFallback) {
throw new \RuntimeException('Could not prompt for input in a secure fashion, aborting');
}
return self::prompt();
}
private static function trimAnswer($str)
{
return preg_replace('{\r?\n$}D', '', $str);
}
}
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