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Add Redis authentication #4

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Add Redis authentication #4

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7314473
Add Redis authentication
szepeviktor Oct 28, 2025
2336ca3
Add Redis db option
szepeviktor Jan 21, 2026
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14 changes: 12 additions & 2 deletions rate-limiter.php
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Original file line number Diff line number Diff line change
Expand Up @@ -15,6 +15,8 @@
'id' => getenv('RATE_LIMIT_ID'),
'interval' => getenv('RATE_LIMIT_INTERVAL'),
'host' => 'localhost',
'auth' => ['redis-username', 'redis-password'],
'db' => 0,
'prefix' => 'waf:ratelimit:',
]);

Expand All @@ -33,15 +35,23 @@ function rate_limit(array $options): void
}

$key = preg_replace('/[^a-zA-Z0-9_\-\.]/', '_', $key);

try {
$redis = new Redis();
if (!$redis->connect($host, 6379)) {
error_log('Failed to connect to Redis server.');
return;
}
if (!$redis->auth($options['auth'])) {
error_log('Failed to authenticate to Redis server.');
return;
}
if (!$redis->select($options['db'])) {
error_log('Failed to select Redis database.');
return;
}
} catch (\RedisException $e) {
error_log('Redis connection failed: ' . $e->getMessage());
error_log('Redis connection error: ' . $e->getMessage());
return;
}

Expand Down