|
1
|
|
|
<?php |
|
2
|
|
|
|
|
3
|
|
|
namespace SilverStripe\Core\Startup; |
|
4
|
|
|
|
|
5
|
|
|
use SilverStripe\Control\Controller; |
|
6
|
|
|
use SilverStripe\Control\Director; |
|
7
|
|
|
use SilverStripe\Control\HTTPRequest; |
|
8
|
|
|
use SilverStripe\Control\HTTPResponse; |
|
9
|
|
|
use SilverStripe\Core\Convert; |
|
10
|
|
|
use SilverStripe\Security\RandomGenerator; |
|
11
|
|
|
|
|
12
|
|
|
/** |
|
13
|
|
|
* This is used to protect dangerous GET parameters that need to be detected early in the request |
|
14
|
|
|
* lifecycle by generating a one-time-use token & redirecting with that token included in the |
|
15
|
|
|
* redirected URL |
|
16
|
|
|
* |
|
17
|
|
|
* @internal This class is designed specifically for use pre-startup and may change without warning |
|
18
|
|
|
*/ |
|
19
|
|
|
class ParameterConfirmationToken extends AbstractConfirmationToken |
|
20
|
|
|
{ |
|
21
|
|
|
/** |
|
22
|
|
|
* The name of the parameter |
|
23
|
|
|
* |
|
24
|
|
|
* @var string |
|
25
|
|
|
*/ |
|
26
|
|
|
protected $parameterName = null; |
|
27
|
|
|
|
|
28
|
|
|
/** |
|
29
|
|
|
* The parameter given in the main request |
|
30
|
|
|
* |
|
31
|
|
|
* @var string|null The string value, or null if not provided |
|
32
|
|
|
*/ |
|
33
|
|
|
protected $parameter = null; |
|
34
|
|
|
|
|
35
|
|
|
/** |
|
36
|
|
|
* The parameter given in the backURL |
|
37
|
|
|
* |
|
38
|
|
|
* @var string|null |
|
39
|
|
|
*/ |
|
40
|
|
|
protected $parameterBackURL = null; |
|
41
|
|
|
|
|
42
|
|
|
/** |
|
43
|
|
|
* @param string $parameterName Name of the querystring parameter to check |
|
44
|
|
|
* @param HTTPRequest $request |
|
45
|
|
|
*/ |
|
46
|
|
|
public function __construct($parameterName, HTTPRequest $request) |
|
47
|
|
|
{ |
|
48
|
|
|
// Store the parameter name |
|
49
|
|
|
$this->parameterName = $parameterName; |
|
50
|
|
|
$this->request = $request; |
|
51
|
|
|
|
|
52
|
|
|
// Store the parameter value |
|
53
|
|
|
$this->parameter = $request->getVar($parameterName); |
|
54
|
|
|
$this->parameterBackURL = $this->backURLToken($request); |
|
55
|
|
|
|
|
56
|
|
|
// If the token provided is valid, mark it as such |
|
57
|
|
|
$token = $request->getVar($parameterName . 'token'); |
|
58
|
|
|
if ($this->checkToken($token)) { |
|
59
|
|
|
$this->token = $token; |
|
60
|
|
|
} |
|
61
|
|
|
} |
|
62
|
|
|
|
|
63
|
|
|
/** |
|
64
|
|
|
* Check if this token exists in the BackURL |
|
65
|
|
|
* |
|
66
|
|
|
* @param HTTPRequest $request |
|
67
|
|
|
* @return string Value of token in backurl, or null if not in backurl |
|
68
|
|
|
*/ |
|
69
|
|
|
protected function backURLToken(HTTPRequest $request) |
|
70
|
|
|
{ |
|
71
|
|
|
$backURL = $request->getVar('BackURL'); |
|
72
|
|
|
if (!strstr($backURL, '?')) { |
|
73
|
|
|
return null; |
|
74
|
|
|
} |
|
75
|
|
|
|
|
76
|
|
|
// Filter backURL if it contains the given request parameter |
|
77
|
|
|
list(,$query) = explode('?', $backURL); |
|
78
|
|
|
parse_str($query, $queryArgs); |
|
79
|
|
|
$name = $this->getName(); |
|
80
|
|
|
if (isset($queryArgs[$name])) { |
|
81
|
|
|
return $queryArgs[$name]; |
|
82
|
|
|
} |
|
83
|
|
|
return null; |
|
84
|
|
|
} |
|
85
|
|
|
|
|
86
|
|
|
/** |
|
87
|
|
|
* Get the name of this token |
|
88
|
|
|
* |
|
89
|
|
|
* @return string |
|
90
|
|
|
*/ |
|
91
|
|
|
public function getName() |
|
92
|
|
|
{ |
|
93
|
|
|
return $this->parameterName; |
|
94
|
|
|
} |
|
95
|
|
|
|
|
96
|
|
|
/** |
|
97
|
|
|
* Is the parameter requested? |
|
98
|
|
|
* ?parameter and ?parameter=1 are both considered requested |
|
99
|
|
|
* |
|
100
|
|
|
* @return bool |
|
101
|
|
|
*/ |
|
102
|
|
|
public function parameterProvided() |
|
103
|
|
|
{ |
|
104
|
|
|
return $this->parameter !== null; |
|
105
|
|
|
} |
|
106
|
|
|
|
|
107
|
|
|
/** |
|
108
|
|
|
* Is the parmeter requested in a BackURL param? |
|
109
|
|
|
* |
|
110
|
|
|
* @return bool |
|
111
|
|
|
*/ |
|
112
|
|
|
public function existsInReferer() |
|
113
|
|
|
{ |
|
114
|
|
|
return $this->parameterBackURL !== null; |
|
115
|
|
|
} |
|
116
|
|
|
|
|
117
|
|
|
public function reloadRequired() |
|
118
|
|
|
{ |
|
119
|
|
|
return $this->parameterProvided() && !$this->tokenProvided(); |
|
120
|
|
|
} |
|
121
|
|
|
|
|
122
|
|
|
public function reloadRequiredIfError() |
|
123
|
|
|
{ |
|
124
|
|
|
// Don't reload if token exists |
|
125
|
|
|
return $this->reloadRequired() || $this->existsInReferer(); |
|
126
|
|
|
} |
|
127
|
|
|
|
|
128
|
|
|
public function suppress() |
|
129
|
|
|
{ |
|
130
|
|
|
unset($_GET[$this->parameterName]); |
|
131
|
|
|
$this->request->offsetUnset($this->parameterName); |
|
132
|
|
|
} |
|
133
|
|
|
|
|
134
|
|
|
public function params($includeToken = true) |
|
135
|
|
|
{ |
|
136
|
|
|
$params = array( |
|
137
|
|
|
$this->parameterName => $this->parameter, |
|
138
|
|
|
); |
|
139
|
|
|
if ($includeToken) { |
|
140
|
|
|
$params[$this->parameterName . 'token'] = $this->genToken(); |
|
141
|
|
|
} |
|
142
|
|
|
return $params; |
|
143
|
|
|
} |
|
144
|
|
|
|
|
145
|
|
|
public function getRedirectUrlBase() |
|
146
|
|
|
{ |
|
147
|
|
|
return ($this->existsInReferer() && !$this->parameterProvided()) ? Director::baseURL() : $this->currentURL(); |
|
148
|
|
|
} |
|
149
|
|
|
|
|
150
|
|
|
public function getRedirectUrlParams() |
|
151
|
|
|
{ |
|
152
|
|
|
return ($this->existsInReferer() && !$this->parameterProvided()) |
|
153
|
|
|
? $this->params() |
|
154
|
|
|
: array_merge($this->request->getVars(), $this->params()); |
|
155
|
|
|
} |
|
156
|
|
|
|
|
157
|
|
|
protected function redirectURL() |
|
158
|
|
|
{ |
|
159
|
|
|
$query = http_build_query($this->getRedirectUrlParams()); |
|
160
|
|
|
return Controller::join_links($this->getRedirectUrlBase(), '?' . $query); |
|
161
|
|
|
} |
|
162
|
|
|
} |
|
163
|
|
|
|
sminnee /
silverstripe-framework
