Upgraded to open_id_authentication plugin at 00d8bc7f97 and unpacked ruby-openid gem version 2.1.2.

vendor/gems/ruby-openid-2.1.2/lib/openid/urinorm.rb

@@ -0,0 +1,75 @@
+require 'uri'
+
+require "openid/extras"
+
+module OpenID
+
+  module URINorm
+    public
+    def URINorm.urinorm(uri)
+      uri = URI.parse(uri)
+
+      raise URI::InvalidURIError.new('no scheme') unless uri.scheme
+      uri.scheme = uri.scheme.downcase
+      unless ['http','https'].member?(uri.scheme)
+        raise URI::InvalidURIError.new('Not an HTTP or HTTPS URI')
+      end
+
+      raise URI::InvalidURIError.new('no host') unless uri.host
+      uri.host = uri.host.downcase
+
+      uri.path = remove_dot_segments(uri.path)
+      uri.path = '/' if uri.path.length == 0
+
+      uri = uri.normalize.to_s
+      uri = uri.gsub(PERCENT_ESCAPE_RE) {
+        sub = $&[1..2].to_i(16).chr
+        reserved(sub) ? $&.upcase : sub
+      }
+
+      return uri
+    end
+
+    private
+    RESERVED_RE = /[A-Za-z0-9._~-]/
+    PERCENT_ESCAPE_RE = /%[0-9a-zA-Z]{2}/
+
+    def URINorm.reserved(chr)
+      not RESERVED_RE =~ chr
+    end
+
+    def URINorm.remove_dot_segments(path)
+      result_segments = []
+
+      while path.length > 0
+        if path.starts_with?('../')
+          path = path[3..-1]
+        elsif path.starts_with?('./')
+          path = path[2..-1]
+        elsif path.starts_with?('/./')
+          path = path[2..-1]
+        elsif path == '/.'
+          path = '/'
+        elsif path.starts_with?('/../')
+          path = path[3..-1]
+          result_segments.pop if result_segments.length > 0
+        elsif path == '/..'
+          path = '/'
+          result_segments.pop if result_segments.length > 0
+        elsif path == '..' or path == '.'
+          path = ''
+        else
+          i = 0
+          i = 1 if path[0].chr == '/'
+          i = path.index('/', i)
+          i = path.length if i.nil?
+          result_segments << path[0...i]
+          path = path[i..-1]
+        end
+      end
+
+      return result_segments.join('')
+    end
+  end
+
+end