mirror of
https://github.com/pi-hole/web.git
synced 2025-12-24 12:48:29 +00:00
39ec67829b
All different exec() calls basically just calls sudo pihole, with various different syntaxes. Using a wrapper function allows sanitization of arguments for better safety. Signed-off-by: Samu Voutilainen <smar@smar.fi>
85 lines
2.2 KiB
PHP
85 lines
2.2 KiB
PHP
<?php
|
|
/* Pi-hole: A black hole for Internet advertisements
|
|
* (c) 2017 Pi-hole, LLC (https://pi-hole.net)
|
|
* Network-wide ad blocking via your own hardware.
|
|
*
|
|
* This file is copyright under the latest version of the EUPL.
|
|
* Please see LICENSE file for your rights under this license. */
|
|
|
|
function is_valid_domain_name($domain_name)
|
|
{
|
|
return (preg_match("/^((-|_)*[a-z\d]((-|_)*[a-z\d])*(-|_)*)(\.(-|_)*([a-z\d]((-|_)*[a-z\d])*))*$/i", $domain_name) && // Valid chars check
|
|
preg_match("/^.{1,253}$/", $domain_name) && // Overall length check
|
|
preg_match("/^[^\.]{1,63}(\.[^\.]{1,63})*$/", $domain_name)); // Length of each label
|
|
}
|
|
|
|
function get_ip_type($ip)
|
|
{
|
|
return filter_var($ip, FILTER_VALIDATE_IP, FILTER_FLAG_IPV4) ? 4 :
|
|
(filter_var($ip, FILTER_VALIDATE_IP, FILTER_FLAG_IPV6) ? 6 :
|
|
0);
|
|
}
|
|
|
|
function checkfile($filename) {
|
|
if(is_readable($filename))
|
|
{
|
|
return $filename;
|
|
}
|
|
else
|
|
{
|
|
// substitute dummy file
|
|
return "/dev/null";
|
|
}
|
|
}
|
|
|
|
// Credit: http://php.net/manual/en/function.hash-equals.php#119576
|
|
if(!function_exists('hash_equals')) {
|
|
function hash_equals($known_string, $user_string) {
|
|
$ret = 0;
|
|
|
|
if (strlen($known_string) !== strlen($user_string)) {
|
|
$user_string = $known_string;
|
|
$ret = 1;
|
|
}
|
|
|
|
$res = $known_string ^ $user_string;
|
|
|
|
for ($i = strlen($res) - 1; $i >= 0; --$i) {
|
|
$ret |= ord($res[$i]);
|
|
}
|
|
|
|
return !$ret;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* More safely execute a command with pihole shell script.
|
|
*
|
|
* For example,
|
|
*
|
|
* pihole_execute("-h");
|
|
*
|
|
* would execute command
|
|
*
|
|
* sudo pihole -h
|
|
*
|
|
* and returns output of that command as a string.
|
|
*
|
|
* @param $argument_string String of arguments to run pihole with.
|
|
* @param $error_on_failure If true, a warning is raised if command execution fails. Defaults to true.
|
|
*/
|
|
function pihole_execute($argument_string, $error_on_failure = true) {
|
|
$escaped = escapeshellcmd($argument_string);
|
|
$output = null;
|
|
$return_status = -1;
|
|
$command = "sudo pihole " . $escaped;
|
|
exec($command, $output, $return_status);
|
|
if($return_status !== 0)
|
|
{
|
|
trigger_error("Executing {$command} failed.", E_USER_WARNING);
|
|
}
|
|
return $output;
|
|
}
|
|
|
|
?>
|