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
|
module Net
module NTLM
class EncodeUtil
if RUBY_VERSION == "1.8.7"
require "kconv"
# Decode a UTF16 string to a ASCII string
# @param [String] str The string to convert
def self.decode_utf16le(str)
Kconv.kconv(swap16(str), Kconv::ASCII, Kconv::UTF16)
end
# Encodes a ASCII string to a UTF16 string
# @param [String] str The string to convert
def self.encode_utf16le(str)
swap16(Kconv.kconv(str, Kconv::UTF16, Kconv::ASCII))
end
# Taggle the strings endianness between big/little and little/big
# @param [String] str The string to swap the endianness on
def self.swap16(str)
str.unpack("v*").pack("n*")
end
else # Use native 1.9 string encoding functions
# Decode a UTF16 string to a ASCII string
# @param [String] str The string to convert
def self.decode_utf16le(str)
str = str.dup.force_encoding(Encoding::UTF_16LE)
str.encode(Encoding::UTF_8, Encoding::UTF_16LE).force_encoding('UTF-8')
end
# Encodes a ASCII string to a UTF16 string
# @param [String] str The string to convert
# @note This implementation may seem stupid but the problem is that UTF16-LE and UTF-8 are incompatiable
# encodings. This library uses string contatination to build the packet bytes. The end result is that
# you can either marshal the encodings elsewhere of simply know that each time you call encode_utf16le
# the function will convert the string bytes to UTF-16LE and note the encoding as UTF-8 so that byte
# concatination works seamlessly.
def self.encode_utf16le(str)
str.dup.force_encoding('UTF-8').encode(Encoding::UTF_16LE, Encoding::UTF_8).force_encoding('UTF-8')
end
end
end
end
end
|
