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Viewing File: /home/primemegahub/public_html/src/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|null
*/
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, $maxAttempts)) {
return false;
}
if (is_null($result = $callback())) {
$result = true;
}
return tap($result, 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, $maxAttempts)
{
if ($this->attempts($key) >= $maxAttempts) {
if ($this->cache->has($this->cleanRateLimiterKey($key).':timer')) {
return true;
}
$this->resetAttempts($key);
}
return false;
}
/**
* Increment (by 1) 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)
{
return $this->increment($key, $decaySeconds);
}
/**
* Increment the counter for a given key for a given decay time by a given amount.
*
* @param string $key
* @param int $decaySeconds
* @param int $amount
* @return int
*/
public function increment($key, $decaySeconds = 60, $amount = 1)
{
$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, $amount);
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));
}
}
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