11: def handle(ctx, params)
12: raise ArgumentError.new('uri must be specified') unless params[:uri]
13: uri = params[:uri]
14: referer = params[:referer]
15: unless uri.is_a?(URI)
16: uri = uri.to_s.strip.gsub(/[^#{0.chr}-#{126.chr}]/) { |match|
17: sprintf('%%%X', match.unpack($KCODE == 'UTF8' ? 'U' : 'c')[0])
18: }
19:
20: escaped_uri = Util.html_unescape(
21: uri.split(/(?:%[0-9A-Fa-f]{2})+|#/).zip(
22: uri.scan(/(?:%[0-9A-Fa-f]{2})+|#/)
23: ).map { |x,y|
24: "#{URI.escape(x)}#{y}"
25: }.join('')
26: )
27:
28: begin
29: uri = URI.parse(escaped_uri)
30: rescue
31: uri = URI.parse(URI.escape(escaped_uri))
32: end
33:
34: end
35: uri = @scheme_handlers[
36: uri.relative? ? 'relative' : uri.scheme.downcase
37: ].call(uri, params[:referer])
38:
39: if params[:referer] && params[:referer].uri
40: if uri.path.length == 0 && uri.relative?
41: uri.path = params[:referer].uri.path
42: end
43: end
44:
45: uri.path = '/' if uri.path.length == 0
46:
47: if uri.relative?
48: raise 'need absolute URL' unless referer && referer.uri
49: base = referer.respond_to?(:bases) ? referer.bases.last : nil
50: uri = ((base && base.uri && base.uri.absolute?) ?
51: base.uri :
52: referer.uri) + uri
53: uri = referer.uri + uri
54:
55: uri.path.sub!(/^(\/\.\.)+(?=\/)/, '')
56: end
57:
58: unless ['http', 'https', 'file'].include?(uri.scheme.downcase)
59: raise "unsupported scheme: #{uri.scheme}"
60: end
61: params[:uri] = uri
62:
63: super
64: end