|
1
|
|
|
<?php |
|
2
|
|
|
/** |
|
3
|
|
|
* This file is part of the ZBateson\MailMimeParser project. |
|
4
|
|
|
* |
|
5
|
|
|
* @license http://opensource.org/licenses/bsd-license.php BSD |
|
6
|
|
|
*/ |
|
7
|
|
|
namespace ZBateson\MailMimeParser; |
|
8
|
|
|
|
|
9
|
|
|
use php_user_filter; |
|
10
|
|
|
|
|
11
|
|
|
/** |
|
12
|
|
|
* Stream filter converts uuencoded text to its raw binary. |
|
13
|
|
|
* |
|
14
|
|
|
* @author Zaahid Bateson |
|
15
|
|
|
*/ |
|
16
|
|
|
class UUEncodeStreamFilter extends php_user_filter |
|
17
|
|
|
{ |
|
18
|
|
|
/** |
|
19
|
|
|
* Name used when registering with stream_filter_register. |
|
20
|
|
|
*/ |
|
21
|
|
|
const STREAM_FILTER_NAME = 'mailmimeparser-uudecode'; |
|
22
|
|
|
|
|
23
|
|
|
/** |
|
24
|
|
|
* @var string Leftovers from the last incomplete line that was parsed, to |
|
25
|
|
|
* be prepended to the next line read. |
|
26
|
|
|
*/ |
|
27
|
|
|
private $leftover = ''; |
|
28
|
|
|
|
|
29
|
|
|
/** |
|
30
|
|
|
* Returns an array of complete lines (including line endings) from the |
|
31
|
|
|
* passed $bucket object. |
|
32
|
|
|
* |
|
33
|
|
|
* If the last line on $bucket is incomplete, it's assigned to |
|
34
|
|
|
* $this->leftover and prepended to the first element of the first line in |
|
35
|
|
|
* the next call to getLines. |
|
36
|
|
|
* |
|
37
|
|
|
* @param object $bucket |
|
38
|
|
|
* @return string[] |
|
39
|
|
|
*/ |
|
40
|
|
|
private function getLines($bucket) |
|
41
|
|
|
{ |
|
42
|
|
|
$lines = preg_split( |
|
43
|
|
|
'/([^\r\n]+[\r\n]+)/', |
|
44
|
|
|
$bucket->data, |
|
45
|
|
|
-1, |
|
46
|
|
|
PREG_SPLIT_DELIM_CAPTURE | PREG_SPLIT_NO_EMPTY |
|
47
|
|
|
); |
|
48
|
|
|
if (!empty($this->leftover)) { |
|
49
|
|
|
$lines[0] = $this->leftover . $lines[0]; |
|
50
|
|
|
$this->leftover = ''; |
|
51
|
|
|
} |
|
52
|
|
|
$last = end($lines); |
|
53
|
|
|
if ($last[strlen($last) - 1] !== "\n") { |
|
54
|
|
|
$this->leftover = array_pop($lines); |
|
55
|
|
|
} |
|
56
|
|
|
return $lines; |
|
57
|
|
|
} |
|
58
|
|
|
|
|
59
|
|
|
/** |
|
60
|
|
|
* Filter implementation converts encoding before returning PSFS_PASS_ON. |
|
61
|
|
|
* |
|
62
|
|
|
* @param resource $in |
|
63
|
|
|
* @param resource $out |
|
64
|
|
|
* @param int $consumed |
|
65
|
|
|
* @param bool $closing |
|
66
|
|
|
* @return int |
|
67
|
|
|
*/ |
|
68
|
|
|
public function filter($in, $out, &$consumed, $closing) |
|
69
|
|
|
{ |
|
70
|
|
|
while ($bucket = stream_bucket_make_writeable($in)) { |
|
71
|
|
|
$lines = $this->getLines($bucket); |
|
72
|
|
|
$data = ''; |
|
73
|
|
|
foreach ($lines as $line) { |
|
74
|
|
|
$bytes = strlen($line); |
|
75
|
|
|
$cur = trim($line); |
|
76
|
|
|
if (empty($cur) || preg_match('/^begin \d{3} .*$/', $cur)) { |
|
77
|
|
|
$consumed += $bytes; |
|
78
|
|
|
continue; |
|
79
|
|
|
} elseif ($cur === '`' || $cur === 'end') { |
|
80
|
|
|
$consumed += $bytes; |
|
81
|
|
|
break; |
|
82
|
|
|
} |
|
83
|
|
|
$consumed += $bytes; |
|
84
|
|
|
$data .= convert_uudecode($cur); |
|
85
|
|
|
} |
|
86
|
|
|
$bucket->data = $data; |
|
87
|
|
|
stream_bucket_append($out, $bucket); |
|
88
|
|
|
} |
|
89
|
|
|
return PSFS_PASS_ON; |
|
90
|
|
|
} |
|
91
|
|
|
} |
|
92
|
|
|
|
zbateson /
mail-mime-parser
