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Merge branch '3.2.x'

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Marc Alexander 2018-06-19 13:32:49 +02:00
commit 857b55dd20
1 changed files with 6 additions and 4 deletions
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10
phpBB/includes/functions.php
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@ -54,27 +54,29 @@ function phpbb_load_extensions_autoloaders($phpbb_root_path)
/**
* Generates an alphanumeric random string of given length
*
* @param int $num_chars Length of random string, defaults to 8
* @param int $num_chars Length of random string, defaults to 8.
* This number should be less or equal than 64.
*
* @return string
*/
function gen_rand_string($num_chars = 8)
{
// [a, z] + [0, 9] = 36
return substr(strtoupper(base_convert(bin2hex(random_bytes($num_chars)), 16, 36)), 0, $num_chars);
return substr(strtoupper(base_convert(bin2hex(random_bytes($num_chars + 1)), 16, 36)), 0, $num_chars);
}
/**
* Generates a user-friendly alphanumeric random string of given length
* We remove 0 and O so users cannot confuse those in passwords etc.
*
* @param int $num_chars Length of random string, defaults to 8
* @param int $num_chars Length of random string, defaults to 8.
* This number should be less or equal than 64.
*
* @return string
*/
function gen_rand_string_friendly($num_chars = 8)
{
$rand_str = bin2hex(random_bytes($num_chars));
$rand_str = bin2hex(random_bytes($num_chars + 1));
// Remove Z and Y from the base_convert(), replace 0 with Z and O with Y
// [a, z] + [0, 9] - {z, y} = [a, z] + [0, 9] - {0, o} = 34