869ece5d |
1 | <?php |
2 | |
3 | function decodeBASE64($s) { |
4 | $B64Values = array( |
5 | "A" => 0, "B" => 1, "C" => 2, "D" => 3, "E" => 4, "F" => 5, |
6 | "G" => 6, "H" => 7, "I" => 8, "J" => 9, "K" => 10, "L" => 11, |
7 | "M" => 12, "N" => 13, "O" => 14, "P" => 15, "Q" => 16, "R" => 17, |
8 | "S" => 18, "T" => 19, "U" => 20, "V" => 21, "W" => 22, "X" => 23, |
9 | "Y" => 24, "Z" => 25, |
10 | "a" => 26, "b" => 27, "c" => 28, "d" => 29, "e" => 30, "f" => 31, |
11 | "g" => 32, "h" => 33, "i" => 34, "j" => 35, "k" => 36, "l" => 37, |
12 | "m" => 38, "n" => 39, "o" => 40, "p" => 41, "q" => 42, "r" => 43, |
13 | "s" => 44, "t" => 45, "u" => 46, "v" => 47, "w" => 48, "x" => 49, |
14 | "y" => 50, "z" => 51, |
15 | "0" => 52, "1" => 53, "2" => 54, "3" => 55, "4" => 56, "5" => 57, |
16 | "6" => 58, "7" => 59, "8" => 60, "9" => 61, "+" => 62, "," => 63 |
17 | ); |
18 | $p = 0; |
19 | $d = ''; |
20 | $unicodeNullByteToggle = 0; |
21 | for ($i = 0; $i < strlen($s); $i++) { |
22 | $c = $s[$i]; |
23 | if ($p == 0) { |
24 | $t = $B64Values[$c]; |
25 | $p = 1; |
26 | } elseif ($p == 1) { |
27 | if ($unicodeNullByteToggle) { |
28 | $d = $d . chr(($t << 2) + (($B64Values[$c] & 48) >> 4)); |
29 | $unicodeNullByteToggle = 0; |
30 | } else { |
31 | $unicodeNullByteToggle = 1; |
32 | } |
33 | $t = ($B64Values[$c] & 15); |
34 | $p = 2; |
35 | } elseif ($p == 2) { |
36 | if ($unicodeNullByteToggle) { |
37 | $d = $d . chr(($t << 4) + (($B64Values[$c] & 60) >> 2)); |
38 | $unicodeNullByteToggle = 0; |
39 | } else { |
40 | $unicodeNullByteToggle = 1; |
41 | } |
42 | $t = ($B64Values[$c] & 3); |
43 | $p = 3; |
44 | } elseif ($p == 3) { |
45 | if ($unicodeNullByteToggle) { |
46 | $d = $d . chr(($t << 6) + $B64Values[$c]); |
47 | $unicodeNullByteToggle = 0; |
48 | } else { |
49 | $unicodeNullByteToggle = 1; |
50 | } |
51 | $t = ($B64Values[$c] & 3); |
52 | $p = 0; |
53 | } |
54 | } |
55 | return $d; |
56 | } |
57 | |
58 | function imap_utf7_decode_local($s) { |
59 | $b64_s = ''; |
60 | $iso_8859_1_s = ''; |
61 | for ($i = 0; $i < strlen($s); $i++) { |
62 | $c = $s[$i]; |
63 | if (strlen($b64_s) > 0) { |
64 | if ($c == '-') { |
65 | if ($b64_s == '&') { |
66 | $iso_8859_1_s = $iso_8859_1_s . '&'; |
67 | } else { |
68 | $iso_8859_1_s = $iso_8859_1_s . |
69 | decodeBASE64(substr($b64_s, 1)); |
70 | } |
71 | $b64_s = ''; |
72 | } else { |
73 | $b64_s = $b64_s . $c; |
74 | } |
75 | } else { |
76 | if ($c == '&') { |
77 | $b64_s = '&'; |
78 | } else { |
79 | $iso_8859_1_s = $iso_8859_1_s . $c; |
80 | } |
81 | } |
82 | } |
83 | return $iso_8859_1_s; |
84 | } |
85 | |
86 | ?> |