18 lines
820 B
Ruby
18 lines
820 B
Ruby
module CrawlerDetection
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# added 'ia_archiver' based on https://meta.discourse.org/t/unable-to-archive-discourse-pages-with-the-internet-archive/21232
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# added 'Wayback Save Page' based on https://meta.discourse.org/t/unable-to-archive-discourse-with-the-internet-archive-save-page-now-button/22875
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# added 'Swiftbot' based on https://meta.discourse.org/t/how-to-add-html-markup-or-meta-tags-for-external-search-engine/28220
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def self.to_matcher(string)
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escaped = string.split('|').map { |agent| Regexp.escape(agent) }.join('|')
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Regexp.new(escaped)
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end
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def self.crawler?(user_agent)
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# this is done to avoid regenerating regexes
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@matchers ||= {}
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matcher = (@matchers[SiteSetting.crawler_user_agents] ||= to_matcher(SiteSetting.crawler_user_agents))
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matcher.match?(user_agent)
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end
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end
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