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Direktori : /home2/selectio/public_html/3-idiots/vendor/laravel/framework/src/Illuminate/Cache/ |
Current File : /home2/selectio/public_html/3-idiots/vendor/laravel/framework/src/Illuminate/Cache/RateLimiter.php |
<?php namespace Illuminate\Cache; use Closure; use Illuminate\Contracts\Cache\Repository as Cache; use Illuminate\Support\InteractsWithTime; class RateLimiter { use InteractsWithTime; /** * The cache store implementation. * * @var \Illuminate\Contracts\Cache\Repository */ protected $cache; /** * The configured limit object resolvers. * * @var array */ protected $limiters = []; /** * Create a new rate limiter instance. * * @param \Illuminate\Contracts\Cache\Repository $cache * @return void */ public function __construct(Cache $cache) { $this->cache = $cache; } /** * Register a named limiter configuration. * * @param string $name * @param \Closure $callback * @return $this */ public function for(string $name, Closure $callback) { $this->limiters[$name] = $callback; return $this; } /** * Get the given named rate limiter. * * @param string $name * @return \Closure */ public function limiter(string $name) { return $this->limiters[$name] ?? null; } /** * Attempts to execute a callback if it's not limited. * * @param string $key * @param int $maxAttempts * @param \Closure $callback * @param int $decaySeconds * @return mixed */ public function attempt($key, $maxAttempts, Closure $callback, $decaySeconds = 60) { if ($this->tooManyAttempts($key, $maxAttempts)) { return false; } return tap($callback() ?: true, function () use ($key, $decaySeconds) { $this->hit($key, $decaySeconds); }); } /** * Determine if the given key has been "accessed" too many times. * * @param string $key * @param int $maxAttempts * @return bool */ public function tooManyAttempts($key, $maxAttempts) { $key = $this->cleanRateLimiterKey($key); if ($this->attempts($key) >= $maxAttempts) { if ($this->cache->has($key.':timer')) { return true; } $this->resetAttempts($key); } return false; } /** * Increment the counter for a given key for a given decay time. * * @param string $key * @param int $decaySeconds * @return int */ public function hit($key, $decaySeconds = 60) { $key = $this->cleanRateLimiterKey($key); $this->cache->add( $key.':timer', $this->availableAt($decaySeconds), $decaySeconds ); $added = $this->cache->add($key, 0, $decaySeconds); $hits = (int) $this->cache->increment($key); if (! $added && $hits == 1) { $this->cache->put($key, 1, $decaySeconds); } return $hits; } /** * Get the number of attempts for the given key. * * @param string $key * @return mixed */ public function attempts($key) { $key = $this->cleanRateLimiterKey($key); return $this->cache->get($key, 0); } /** * Reset the number of attempts for the given key. * * @param string $key * @return mixed */ public function resetAttempts($key) { $key = $this->cleanRateLimiterKey($key); return $this->cache->forget($key); } /** * Get the number of retries left for the given key. * * @param string $key * @param int $maxAttempts * @return int */ public function remaining($key, $maxAttempts) { $key = $this->cleanRateLimiterKey($key); $attempts = $this->attempts($key); return $maxAttempts - $attempts; } /** * Get the number of retries left for the given key. * * @param string $key * @param int $maxAttempts * @return int */ public function retriesLeft($key, $maxAttempts) { return $this->remaining($key, $maxAttempts); } /** * Clear the hits and lockout timer for the given key. * * @param string $key * @return void */ public function clear($key) { $key = $this->cleanRateLimiterKey($key); $this->resetAttempts($key); $this->cache->forget($key.':timer'); } /** * Get the number of seconds until the "key" is accessible again. * * @param string $key * @return int */ public function availableIn($key) { $key = $this->cleanRateLimiterKey($key); return max(0, $this->cache->get($key.':timer') - $this->currentTime()); } /** * Clean the rate limiter key from unicode characters. * * @param string $key * @return string */ public function cleanRateLimiterKey($key) { return preg_replace('/&([a-z])[a-z]+;/i', '$1', htmlentities($key)); } }