blob: 35df7f1aae508efa47d4bd7e5311328ff0477f58 (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
|
# frozen_string_literal: true
module ActionDispatch
module Journey # :nodoc:
class Router # :nodoc:
class Utils # :nodoc:
# 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 ||= ""
encoding = path.encoding
path = "/#{path}".dup
path.squeeze!("/".freeze)
path.sub!(%r{/+\Z}, "".freeze)
path.gsub!(/(%[a-f0-9]{2})/) { $1.upcase }
path = "/".dup if path == "".freeze
path.force_encoding(encoding)
path
end
# URI path and fragment escaping
# http://tools.ietf.org/html/rfc3986
class UriEncoder # :nodoc:
ENCODE = "%%%02X".freeze
US_ASCII = Encoding::US_ASCII
UTF_8 = Encoding::UTF_8
EMPTY = "".dup.force_encoding(US_ASCII).freeze
DEC2HEX = (0..255).to_a.map { |i| ENCODE % i }.map { |s| s.force_encoding(US_ASCII) }
ALPHA = "a-zA-Z".freeze
DIGIT = "0-9".freeze
UNRESERVED = "#{ALPHA}#{DIGIT}\\-\\._~".freeze
SUB_DELIMS = "!\\$&'\\(\\)\\*\\+,;=".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)
encoding = uri.encoding == US_ASCII ? UTF_8 : uri.encoding
uri.gsub(ESCAPED) { |match| [match[1, 2].hex].pack("C") }.force_encoding(encoding)
end
private
def escape(component, pattern)
component.gsub(pattern) { |unsafe| percent_encode(unsafe) }.force_encoding(US_ASCII)
end
def percent_encode(unsafe)
safe = EMPTY.dup
unsafe.each_byte { |b| safe << DEC2HEX[b] }
safe
end
end
ENCODER = UriEncoder.new
def self.escape_path(path)
ENCODER.escape_path(path.to_s)
end
def self.escape_segment(segment)
ENCODER.escape_segment(segment.to_s)
end
def self.escape_fragment(fragment)
ENCODER.escape_fragment(fragment.to_s)
end
# Replaces any escaped sequences with their unescaped representations.
#
# uri = "/topics?title=Ruby%20on%20Rails"
# unescape_uri(uri) #=> "/topics?title=Ruby on Rails"
def self.unescape_uri(uri)
ENCODER.unescape_uri(uri)
end
end
end
end
end
|
