82 lines
2.1 KiB
Ruby
82 lines
2.1 KiB
Ruby
# frozen_string_literal: true
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class UrlHelper
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# At the moment this handles invalid URLs that browser address bar accepts
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# where second # is not encoded
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#
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# Longer term we can add support of simpleidn and encode unicode domains
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def self.relaxed_parse(url)
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url, fragment = url.split("#", 2)
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uri = URI.parse(url)
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if uri
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fragment = URI.escape(fragment) if fragment&.include?('#')
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uri.fragment = fragment
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uri
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end
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rescue URI::Error
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end
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def self.is_local(url)
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url.present? && (
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Discourse.store.has_been_uploaded?(url) ||
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!!(url =~ Regexp.new("^#{Discourse.base_uri}/(assets|plugins|images)/")) ||
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url.start_with?(Discourse.asset_host || Discourse.base_url_no_prefix)
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)
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end
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def self.absolute(url, cdn = Discourse.asset_host)
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cdn = "https:#{cdn}" if cdn && cdn =~ /^\/\//
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url =~ /^\/[^\/]/ ? (cdn || Discourse.base_url_no_prefix) + url : url
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end
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def self.absolute_without_cdn(url)
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self.absolute(url, nil)
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end
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def self.schemaless(url)
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url.sub(/^http:/i, "")
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end
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DOUBLE_ESCAPED_REGEXP ||= /%25([0-9a-f]{2})/i
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# Prevents double URL encode
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# https://stackoverflow.com/a/37599235
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def self.escape_uri(uri, pattern = URI::UNSAFE)
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encoded = URI.encode(uri, pattern)
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encoded.gsub!(DOUBLE_ESCAPED_REGEXP, '%\1')
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encoded
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end
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def self.cook_url(url)
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return url unless is_local(url)
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uri = URI.parse(url)
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filename = File.basename(uri.path)
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is_attachment = !FileHelper.is_supported_image?(filename)
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no_cdn = SiteSetting.login_required || SiteSetting.prevent_anons_from_downloading_files
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url = absolute_without_cdn(url)
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unless is_attachment && no_cdn
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url = Discourse.store.cdn_url(url)
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url = local_cdn_url(url) if Discourse.store.external?
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end
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schemaless(url)
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rescue URI::Error
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url
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end
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def self.local_cdn_url(url)
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return url if Discourse.asset_host.blank?
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if url.start_with?("/#{Discourse.store.upload_path}/")
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"#{Discourse.asset_host}#{url}"
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else
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url.sub(Discourse.base_url_no_prefix, Discourse.asset_host)
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end
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end
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end
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