48 lines
1.0 KiB
Ruby
48 lines
1.0 KiB
Ruby
module FacebookConcern
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extend ActiveSupport::Concern
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class InvalidDigestError < StandardError; end
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private
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def mark_deleting(id)
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key = delete_key(id)
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::Redis::Alfred.set(key, true)
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end
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def unset_deleting(id)
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key = delete_key(id)
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::Redis::Alfred.del(key)
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end
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def deleting?(id)
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key = delete_key(id)
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::Redis::Alfred.get(key).present?
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end
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def delete_key(id)
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format(::Redis::Alfred::META_DELETE_PROCESSING, id: id)
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end
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def parse_fb_signed_request(signed_request)
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encoded_signature, payload = signed_request.split('.', 2)
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decoded_signature = Base64.urlsafe_decode64(encoded_signature)
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decoded_payload = JSON.parse(Base64.urlsafe_decode64(payload))
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expected_signature = OpenSSL::HMAC.digest('sha256', app_secret, payload)
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raise InvalidDigestError if decoded_signature != expected_signature
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decoded_payload
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end
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def app_url_base
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ENV.fetch('FRONTEND_URL', nil)
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end
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def app_secret
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GlobalConfigService.load('FB_APP_SECRET', '')
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end
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end
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