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<?php |
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namespace whm\Smoke\Rules\Seo; |
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use Ivory\HttpAdapter\HttpAdapterInterface; |
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use whm\Smoke\Http\ClientAware; |
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use whm\Smoke\Http\Response; |
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use whm\Smoke\Rules\Rule; |
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use whm\Smoke\Rules\ValidationFailedException; |
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/** |
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* This rule checks if robots.txt has no entry "Disallow:/". |
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*/ |
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class RobotsDisallowAllRule implements Rule, ClientAware |
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{ |
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/** |
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* @var HttpAdapterInterface |
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*/ |
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private $client; |
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public function validate(Response $response) |
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{ |
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$url = $response->getUri()->getScheme() . '://' . $response->getUri()->getHost(); |
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if (substr_count($url, '/') === 2) { |
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$filename = $robotsUrl = $url . '/robots.txt'; |
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} elseif (substr_count($url, '/') === 3) { |
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$filename = $robotsUrl = $url . 'robots.txt'; |
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} else { |
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return; |
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} |
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try { |
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$response = $this->client->get($filename); |
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} catch (\Exception $e) { |
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return; |
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} |
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$content = (string) $response->getBody(); |
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$normalizedContent = $this->normalizeContent($content); |
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if (strpos($normalizedContent, 'user-agent:* disallow:/' . PHP_EOL) !== false) { |
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throw new ValidationFailedException('The robots.txt contains disallow all (Disallow: /)'); |
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} |
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if (strpos($normalizedContent, 'user-agent:* disallow:/') === strlen($normalizedContent) - 23) { |
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throw new ValidationFailedException('The robots.txt contains disallow all (Disallow: /)'); |
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} |
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} |
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private function normalizeContent($content) |
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{ |
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$normalizedContent = strtolower($content); |
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$normalizedContent = str_replace(' ', '', $normalizedContent); |
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$normalizedContent = trim(preg_replace('/\s+/', ' ', $normalizedContent)); |
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return $normalizedContent; |
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} |
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public function setClient(HttpAdapterInterface $client) |
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{ |
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$this->client = $client; |
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} |
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} |
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phmLabs /
Smoke
