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Support link verification with redirects (#8735)

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(e.g. URL shortener)
This commit is contained in:
Eugen Rochko
2018-09-20 00:10:35 +02:00
committed by GitHub
parent 554f659f2a
commit f92f1ee80a
2 changed files with 33 additions and 1 deletions
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18
app/services/verify_link_service.rb
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@ -27,6 +27,22 @@ class VerifyLinkService < BaseService
def link_back_present?
return false if @body.empty?
Nokogiri::HTML(@body).xpath('//a[contains(concat(" ", normalize-space(@rel), " "), " me ")]|//link[contains(concat(" ", normalize-space(@rel), " "), " me ")]').any? { |link| link['href'] == @link_back }
links = Nokogiri::HTML(@body).xpath('//a[contains(concat(" ", normalize-space(@rel), " "), " me ")]|//link[contains(concat(" ", normalize-space(@rel), " "), " me ")]')
if links.any? { |link| link['href'] == @link_back }
true
elsif links.empty?
false
else
link_redirects_back?(links.first['href'])
end
end
def link_redirects_back?(test_url)
redirect_to_url = Request.new(:head, test_url, follow: false).perform do |res|
res.headers['Location']
end
redirect_to_url == @link_back
end
end