1
|
|
|
<?php |
2
|
|
|
|
3
|
|
|
/** |
4
|
|
|
* Performs safe variable parsing based on types which can be used by |
5
|
|
|
* users. This may not be able to represent all possible data inputs, |
6
|
|
|
* however. |
7
|
|
|
*/ |
8
|
|
|
class HTMLPurifier_VarParser_Flexible extends HTMLPurifier_VarParser |
9
|
|
|
{ |
10
|
|
|
/** |
11
|
|
|
* @param mixed $var |
12
|
|
|
* @param int $type |
13
|
|
|
* @param bool $allow_null |
14
|
|
|
* @return array|bool|float|int|mixed|null|string |
15
|
|
|
* @throws HTMLPurifier_VarParserException |
16
|
|
|
*/ |
17
|
|
|
protected function parseImplementation($var, $type, $allow_null) |
18
|
|
|
{ |
19
|
|
|
if ($allow_null && $var === null) { |
20
|
|
|
return null; |
21
|
|
|
} |
22
|
|
|
switch ($type) { |
23
|
|
|
// Note: if code "breaks" from the switch, it triggers a generic |
24
|
|
|
// exception to be thrown. Specific errors can be specifically |
25
|
|
|
// done here. |
26
|
|
|
case self::C_MIXED: |
27
|
|
|
case self::ISTRING: |
28
|
|
|
case self::C_STRING: |
29
|
|
|
case self::TEXT: |
30
|
|
|
case self::ITEXT: |
31
|
|
|
return $var; |
32
|
|
|
case self::C_INT: |
33
|
|
|
if (is_string($var) && ctype_digit($var)) { |
34
|
|
|
$var = (int)$var; |
35
|
|
|
} |
36
|
|
|
return $var; |
37
|
|
|
case self::C_FLOAT: |
38
|
|
|
if ((is_string($var) && is_numeric($var)) || is_int($var)) { |
39
|
|
|
$var = (float)$var; |
40
|
|
|
} |
41
|
|
|
return $var; |
42
|
|
|
case self::C_BOOL: |
43
|
|
|
if (is_int($var) && ($var === 0 || $var === 1)) { |
44
|
|
|
$var = (bool)$var; |
45
|
|
|
} elseif (is_string($var)) { |
46
|
|
|
if ($var == 'on' || $var == 'true' || $var == '1') { |
47
|
|
|
$var = true; |
48
|
|
|
} elseif ($var == 'off' || $var == 'false' || $var == '0') { |
49
|
|
|
$var = false; |
50
|
|
|
} else { |
51
|
|
|
throw new HTMLPurifier_VarParserException("Unrecognized value '$var' for $type"); |
52
|
|
|
} |
53
|
|
|
} |
54
|
|
|
return $var; |
55
|
|
|
case self::ALIST: |
56
|
|
|
case self::HASH: |
57
|
|
|
case self::LOOKUP: |
58
|
|
|
if (is_string($var)) { |
59
|
|
|
// special case: technically, this is an array with |
60
|
|
|
// a single empty string item, but having an empty |
61
|
|
|
// array is more intuitive |
62
|
|
|
if ($var == '') { |
63
|
|
|
return array(); |
64
|
|
|
} |
65
|
|
|
if (strpos($var, "\n") === false && strpos($var, "\r") === false) { |
66
|
|
|
// simplistic string to array method that only works |
67
|
|
|
// for simple lists of tag names or alphanumeric characters |
68
|
|
|
$var = explode(',', $var); |
69
|
|
|
} else { |
70
|
|
|
$var = preg_split('/(,|[\n\r]+)/', $var); |
71
|
|
|
} |
72
|
|
|
// remove spaces |
73
|
|
|
foreach ($var as $i => $j) { |
74
|
|
|
$var[$i] = trim($j); |
75
|
|
|
} |
76
|
|
|
if ($type === self::HASH) { |
77
|
|
|
// key:value,key2:value2 |
78
|
|
|
$nvar = array(); |
79
|
|
|
foreach ($var as $keypair) { |
80
|
|
|
$c = explode(':', $keypair, 2); |
81
|
|
|
if (!isset($c[1])) { |
82
|
|
|
continue; |
83
|
|
|
} |
84
|
|
|
$nvar[trim($c[0])] = trim($c[1]); |
85
|
|
|
} |
86
|
|
|
$var = $nvar; |
87
|
|
|
} |
88
|
|
|
} |
89
|
|
|
if (!is_array($var)) { |
90
|
|
|
break; |
91
|
|
|
} |
92
|
|
|
$keys = array_keys($var); |
93
|
|
|
if ($keys === array_keys($keys)) { |
94
|
|
|
if ($type == self::ALIST) { |
95
|
|
|
return $var; |
96
|
|
|
} elseif ($type == self::LOOKUP) { |
97
|
|
|
$new = array(); |
98
|
|
|
foreach ($var as $key) { |
99
|
|
|
$new[$key] = true; |
100
|
|
|
} |
101
|
|
|
return $new; |
102
|
|
|
} else { |
103
|
|
|
break; |
104
|
|
|
} |
105
|
|
|
} |
106
|
|
|
if ($type === self::ALIST) { |
107
|
|
|
trigger_error("Array list did not have consecutive integer indexes", E_USER_WARNING); |
108
|
|
|
return array_values($var); |
109
|
|
|
} |
110
|
|
|
if ($type === self::LOOKUP) { |
111
|
|
|
foreach ($var as $key => $value) { |
112
|
|
|
if ($value !== true) { |
113
|
|
|
trigger_error( |
114
|
|
|
"Lookup array has non-true value at key '$key'; " . |
115
|
|
|
"maybe your input array was not indexed numerically", |
116
|
|
|
E_USER_WARNING |
117
|
|
|
); |
118
|
|
|
} |
119
|
|
|
$var[$key] = true; |
120
|
|
|
} |
121
|
|
|
} |
122
|
|
|
return $var; |
123
|
|
|
default: |
124
|
|
|
$this->errorInconsistent(__CLASS__, $type); |
125
|
|
|
} |
126
|
|
|
$this->errorGeneric($var, $type); |
127
|
|
|
} |
128
|
|
|
} |
129
|
|
|
|
130
|
|
|
// vim: et sw=4 sts=4 |
131
|
|
|
|