diff options
Diffstat (limited to 'actionpack/lib/action_dispatch/journey/router/utils.rb')
-rw-r--r-- | actionpack/lib/action_dispatch/journey/router/utils.rb | 71 |
1 files changed, 54 insertions, 17 deletions
diff --git a/actionpack/lib/action_dispatch/journey/router/utils.rb b/actionpack/lib/action_dispatch/journey/router/utils.rb index 462f1a122d..ac4ecb1e65 100644 --- a/actionpack/lib/action_dispatch/journey/router/utils.rb +++ b/actionpack/lib/action_dispatch/journey/router/utils.rb @@ -1,5 +1,3 @@ -require 'uri' - module ActionDispatch module Journey # :nodoc: class Router # :nodoc: @@ -7,46 +5,85 @@ module ActionDispatch # Normalizes URI path. # # Strips off trailing slash and ensures there is a leading slash. + # Also converts downcase url encoded string to uppercase. # # normalize_path("/foo") # => "/foo" # normalize_path("/foo/") # => "/foo" # normalize_path("foo") # => "/foo" # normalize_path("") # => "/" + # normalize_path("/%ab") # => "/%AB" def self.normalize_path(path) path = "/#{path}" path.squeeze!('/') path.sub!(%r{/+\Z}, '') + path.gsub!(/(%[a-f0-9]{2})/) { $1.upcase } path = '/' if path == '' path end # URI path and fragment escaping # http://tools.ietf.org/html/rfc3986 - module UriEscape # :nodoc: - # Symbol captures can generate multiple path segments, so include /. - reserved_segment = '/' - reserved_fragment = '/?' - reserved_pchar = ':@&=+$,;%' - - safe_pchar = "#{URI::REGEXP::PATTERN::UNRESERVED}#{reserved_pchar}" - safe_segment = "#{safe_pchar}#{reserved_segment}" - safe_fragment = "#{safe_pchar}#{reserved_fragment}" - UNSAFE_SEGMENT = Regexp.new("[^#{safe_segment}]", false).freeze - UNSAFE_FRAGMENT = Regexp.new("[^#{safe_fragment}]", false).freeze + class UriEncoder # :nodoc: + ENCODE = "%%%02X".freeze + ENCODING = Encoding::US_ASCII + EMPTY = "".force_encoding(ENCODING).freeze + DEC2HEX = (0..255).to_a.map{ |i| ENCODE % i }.map{ |s| s.force_encoding(ENCODING) } + + ALPHA = "a-zA-Z".freeze + DIGIT = "0-9".freeze + UNRESERVED = "#{ALPHA}#{DIGIT}\\-\\._~".freeze + SUB_DELIMS = "!\\$&'\\(\\)\\*\\+,;=".freeze + + ESCAPED = /%[a-zA-Z0-9]{2}/.freeze + + FRAGMENT = /[^#{UNRESERVED}#{SUB_DELIMS}:@\/\?]/.freeze + SEGMENT = /[^#{UNRESERVED}#{SUB_DELIMS}:@]/.freeze + PATH = /[^#{UNRESERVED}#{SUB_DELIMS}:@\/]/.freeze + + def escape_fragment(fragment) + escape(fragment, FRAGMENT) + end + + def escape_path(path) + escape(path, PATH) + end + + def escape_segment(segment) + escape(segment, SEGMENT) + end + + def unescape_uri(uri) + uri.gsub(ESCAPED) { [$&[1, 2].hex].pack('C') }.force_encoding(uri.encoding) + end + + protected + def escape(component, pattern) + component.gsub(pattern){ |unsafe| percent_encode(unsafe) }.force_encoding(ENCODING) + end + + def percent_encode(unsafe) + safe = EMPTY.dup + unsafe.each_byte { |b| safe << DEC2HEX[b] } + safe + end end - Parser = URI.const_defined?(:Parser) ? URI::Parser.new : URI + ENCODER = UriEncoder.new def self.escape_path(path) - Parser.escape(path.to_s, UriEscape::UNSAFE_SEGMENT) + ENCODER.escape_path(path.to_s) + end + + def self.escape_segment(segment) + ENCODER.escape_segment(segment.to_s) end def self.escape_fragment(fragment) - Parser.escape(fragment.to_s, UriEscape::UNSAFE_FRAGMENT) + ENCODER.escape_fragment(fragment.to_s) end def self.unescape_uri(uri) - Parser.unescape(uri) + ENCODER.unescape_uri(uri) end end end |