fipamo/brain/utility/StringTools.php

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<?php
namespace brain\utility;
use ReallySimpleJWT\Token;
use ReallySimpleJWT\Exception\BuildException;
use Mni\FrontYAML\Parser;
class StringTools
{
public static function createUUID()
{
if (function_exists("com_create_guid") === true) {
return trim(com_create_guid(), "{}");
}
return sprintf(
"%04X%04X-%04X-%04X-%04X-%04X%04X%04X",
mt_rand(0, 65535),
mt_rand(0, 65535),
mt_rand(0, 65535),
mt_rand(16384, 20479),
mt_rand(32768, 49151),
mt_rand(0, 65535),
mt_rand(0, 65535),
mt_rand(0, 65535)
);
}
public static function sanitizeContent($entry)
{
$parser = new Parser();
$rendered = $parser->parse($entry);
$sanitizer = HtmlSanitizer\Sanitizer::create([
"extensions" => ["basic", "image", "list", "code"],
"tags" => [
"img" => [
"allowed_attributes" => ["src", "alt", "title", "class"],
"allowed_hosts" => null,
],
],
]);
$preclean = $sanitizer->sanitize($rendered->getContent());
$cleaned = strip_tags($rendered->getContent(), [
"a",
"br",
"p",
"strong",
"br",
"img",
"iframe",
"ul",
"li",
"i",
"h1",
"h2",
"h3",
"pre",
"code",
]);
return $cleaned;
}
public static function safeString($string)
{
return strtolower(
trim(
preg_replace(
"~[^0-9a-z]+~i",
"_",
html_entity_decode(
preg_replace(
"~&([a-z]{1,2})(?:acute|cedil|circ|grave|lig|orn|ring|slash|th|tilde|uml);~i",
'$1',
htmlentities($string, ENT_QUOTES, "UTF-8")
),
ENT_QUOTES,
"UTF-8"
)
),
"-"
)
);
}
public static function randomString(int $length)
{
$alphanum =
"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789";
$special = '*&!@%^#$';
$alphabet = $alphanum . $special;
$random = openssl_random_pseudo_bytes($length);
$alphabet_length = strlen($alphabet);
$string = "";
for ($i = 0; $i < $length; ++$i) {
$string .= $alphabet[ord($random[$i]) % $alphabet_length];
}
//secret needs to be a valid token
if ($length == 12) {
try {
$secret = Token::create(12, $string, time() + 3600, "localhost");
return $string;
} catch (BuildException $e) {
//bad secret, so try agiain
//echo "BAD STRING";
return self::randomString(12);
}
if (Token::validate($key, $string)) {
return $string;
} else {
return self::randomString(12);
}
}
}
private static function checkSpecial($string)
{
$specials = ["*", "&", "!", "@", "%", "^", "#", "$"];
$valid = false;
foreach ($specials as $item) {
if (strpos($string, $item)) {
return $valid = true;
}
}
return $valid;
}
}