-<?php
-
-namespace Rapsys\UserBundle\Utils;
-
-use Symfony\Component\DependencyInjection\ContainerInterface;
-
-class Slugger {
- //The secret parameter
- private $secret;
-
- //The alpha array
- private $alpha;
-
- //The rev array
- private $rev;
-
- //The alpha array key number
- private $count;
-
- //The offset reduced from secret
- private $offset;
-
- //Retrieve secret and set offset from reduction
- public function __construct(ContainerInterface $container) {
- //Set secret
- $this->secret = $_SERVER['APP_SECRET'] ?? $container->getParameter('kernel.secret');
-
- //Pseudo-random alphabet
- //XXX: use array flip and keys to workaround php "smart" that cast range('0', '9') as int instead of string
- //XXX: The key count mismatch, count(alpha)>count(rev), resulted in a data corruption due to duplicate numeric values
- //TODO: set this as a parameter generated once in a command ?
- $this->alpha = array_keys(array_flip(array_merge(
- range('^', '[', -1),
- range('V', 'Z'),
- range('9', '7', -1),
- range('L', 'O'),
- range('f', 'a', -1),
- range('_', '`'),
- range('3', '0', -1),
- range('E', 'H'),
- range('v', 'r', -1),
- range('+', '/'),
- range('K', 'I', -1),
- range('g', 'j'),
- range('=', ':', -1),
- range('>', '@'),
- range('m', 'k', -1),
- range('4', '6'),
- range('*', '%', -1),
- range('n', 'q'),
- range('U', 'P', -1),
- range(' ', '$'),
- range('D', 'A', -1),
- range('w', 'z'),
- range('~', '!', -1)
- )));
-
- //Init rev array
- $this->count = count($rev = $this->rev = array_flip($this->alpha));
-
- //Init split
- $split = str_split($this->secret);
-
- //Set offset
- $this->offset = array_reduce($split, function ($res, $a) use ($rev) { return $res += $rev[$a]; }, count($split)) % $this->count;
- }
-
- /**
- * Flatten recursively an array
- *
- * @param array $data The data tree
- * @param string|null $current The current prefix
- * @param string $sep The key separator
- * @param string $prefix The key prefix
- * @param string $suffix The key suffix
- * @return array The flattened data
- */
- public function flatten($data, $current = null, $sep = '.', $prefix = '', $suffix = '') {
- //Init result
- $ret = [];
-
- //Look for data array
- if (is_array($data)) {
- //Iteare on each pair
- foreach($data as $k => $v) {
- //Merge flattened value in return array
- $ret += $this->flatten($v, empty($current) ? $k : $current.$sep.$k, $sep, $prefix, $suffix);
- }
- //Look flat data
- } else {
- //Store data in flattened key
- $ret[$prefix.$current.$suffix] = $data;
- }
-
- //Return result
- return $ret;
- }
-
- /**
- * Crypt and base64uri encode string
- *
- * @param string $data The data string
- * @return string The hashed data
- */
- public function hash(string $data): string {
- //Return hashed data
- //XXX: we use hash_hmac with md5 hash
- //XXX: crypt was dropped because it provided identical signature for string starting with same pattern
- return str_replace(['+','/'], ['-','_'], base64_encode(hash_hmac('md5', $data, $this->secret, true)));
- }
-
- /**
- * Serialize then short
- *
- * @param array $data The data array
- * @return string The serialized and shorted data
- */
- public function serialize(array $data): string {
- //Return shorted serialized data
- return $this->short(serialize($data));
- }
-
- /**
- * Short
- *
- * @param string $data The data string
- * @return string The shorted data
- */
- public function short(string $data): string {
- //Return string
- $ret = '';
-
- //Iterate on each character
- foreach(str_split($data) as $k => $c) {
- if (isset($this->rev[$c]) && isset($this->alpha[($this->rev[$c]+$this->offset)%$this->count])) {
- //XXX: Remap char to an other one
- $ret .= chr(($this->rev[$c] - $this->offset + $this->count) % $this->count);
- }
- }
-
- //Send result
- return str_replace(['+','/'], ['-','_'], base64_encode($ret));
- }
-
- /**
- * Convert string to safe slug
- *
- * @param string $data The data string
- * @return string The slugged data
- */
- function slug(string $data): string {
- //Use Transliterator if available
- if (class_exists('Transliterator')) {
- $trans = \Transliterator::create('Any-Latin; Latin-ASCII; Lower()');
- return preg_replace(['/[^a-zA-Z0-9]+/', '/(^-+|-+$)/'], ['-', ''], $trans->transliterate($data));
- }
- return preg_replace('/[\/_|+ -]+/', '-', strtolower(trim(preg_replace('/[^a-zA-Z0-9\/_|+ -]/', '', str_replace(['\'', '"'], ' ', iconv('UTF-8', 'ASCII//TRANSLIT', $data))), '-')));
- }
-
- /**
- * Unshort then unserialize
- *
- * @param string $data The data string
- * @return array The unshorted and unserialized data
- */
- public function unserialize(string $data): array {
- //Return unshorted unserialized string
- return unserialize($this->unshort($data));
- }
-
- /**
- * Unshort
- *
- * @param string $data The data string
- * @return string The unshorted data
- */
- public function unshort(string $data): string {
- //Return string
- $ret = '';
-
- //Iterate on each character
- foreach(str_split(base64_decode(str_replace(['-','_'], ['+','/'], $data))) as $c) {
- //XXX: Reverse map char to an other one
- $ret .= $this->alpha[(ord($c) + $this->offset) % $this->count];
- }
-
- //Send result
- return $ret;
- }
-}
Rapsys Git / userbundle / commitdiff