#!/usr/bin/env php
<?php
/*
 * Interactive script to generate password hashes.
 *
 */


// This is the base directory of the SimpleSAMLphp installation
$baseDir = dirname(dirname(__FILE__));

// Add library autoloader
require_once($baseDir.'/lib/_autoload.php');


echo "Enter password: ";
$password = trim(fgets(STDIN));

if (empty($password)) {
    echo "Need at least one character for a password\n";
    exit(1);
}

$table = '';
foreach (array_chunk(hash_algos(), 6) as $chunk) {
    foreach ($chunk as $algo) {
        $table .= sprintf('%-13s', $algo);
    }
    $table .= "\n";
}

echo "The following hashing algorithms are available:\n".$table."\n";
echo "Which one do you want? [sha256] ";
$algo = trim(fgets(STDIN));
if (empty($algo)) {
    $algo = 'sha256';
}

if (!in_array(strtolower($algo), hash_algos())) {
    echo "Hashing algorithm '$algo' is not supported\n";
    exit(1);
}

echo "Do you want to use a salt? (yes/no) [yes] ";
$s = (trim(fgets(STDIN)) == 'no') ? '' : 'S';

echo "\n  ".SimpleSAML\Utils\Crypto::pwHash($password, strtoupper($s.$algo))."\n\n";