mirror of
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29 lines
617 B
Ruby
29 lines
617 B
Ruby
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require 'open-uri'
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class ImagesController < ApplicationController
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def show
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url = params[:url]
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parsed = URI.parse(url)
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if parsed.host != 'cdn-img.fimfiction.net'
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render nothing: true, status: :bad_request
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return
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end
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hash = Digest::SHA256.hexdigest(url)
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path = Rails.root.join('public', 'cached-images', hash + File.extname(url))
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our_url = '/cached-images/' + hash + File.extname(url)
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if File.exist? path
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redirect_to our_url
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return
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end
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File.open(path, 'wb') do |fp|
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fp.write(Net::HTTP.get(parsed))
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end
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redirect_to our_url
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end
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end
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