1 | <?php |
||
2 | /** |
||
3 | * PrivateBin |
||
4 | * |
||
5 | * a zero-knowledge paste bin |
||
6 | * |
||
7 | * @link https://github.com/PrivateBin/PrivateBin |
||
8 | * @copyright 2012 Sébastien SAUVAGE (sebsauvage.net) |
||
9 | * @license https://www.opensource.org/licenses/zlib-license.php The zlib/libpng License |
||
10 | * @version 1.2.1 |
||
11 | */ |
||
12 | |||
13 | namespace PrivateBin\Model; |
||
14 | |||
15 | use Exception; |
||
16 | use Identicon\Identicon; |
||
17 | use PrivateBin\Persistence\TrafficLimiter; |
||
18 | use PrivateBin\Sjcl; |
||
19 | use PrivateBin\Vizhash16x16; |
||
20 | |||
21 | /** |
||
22 | * Comment |
||
23 | * |
||
24 | * Model of a PrivateBin comment. |
||
25 | */ |
||
26 | class Comment extends AbstractModel |
||
27 | { |
||
28 | /** |
||
29 | * Instance's parent. |
||
30 | * |
||
31 | * @access private |
||
32 | * @var Paste |
||
33 | */ |
||
34 | private $_paste; |
||
35 | |||
36 | /** |
||
37 | * Get comment data. |
||
38 | * |
||
39 | * @access public |
||
40 | * @throws Exception |
||
41 | * @return stdClass |
||
0 ignored issues
–
show
Bug
introduced
by
Loading history...
|
|||
42 | */ |
||
43 | 5 | public function get() |
|
44 | { |
||
45 | // @todo add support to read specific comment |
||
46 | 5 | $comments = $this->_store->readComments($this->getPaste()->getId()); |
|
47 | 5 | foreach ($comments as $comment) { |
|
48 | if ( |
||
49 | 5 | $comment->parentid == $this->getParentId() && |
|
50 | 5 | $comment->id == $this->getId() |
|
51 | ) { |
||
52 | 5 | $this->_data = $comment; |
|
53 | 5 | break; |
|
54 | } |
||
55 | } |
||
56 | 5 | return $this->_data; |
|
0 ignored issues
–
show
|
|||
57 | } |
||
58 | |||
59 | /** |
||
60 | * Store the comment's data. |
||
61 | * |
||
62 | * @access public |
||
63 | * @throws Exception |
||
64 | */ |
||
65 | 14 | public function store() |
|
66 | { |
||
67 | // Make sure paste exists. |
||
68 | 14 | $pasteid = $this->getPaste()->getId(); |
|
69 | 14 | if (!$this->getPaste()->exists()) { |
|
70 | 1 | throw new Exception('Invalid data.', 67); |
|
71 | } |
||
72 | |||
73 | // Make sure the discussion is opened in this paste and in configuration. |
||
74 | 13 | if (!$this->getPaste()->isOpendiscussion() || !$this->_conf->getKey('discussion')) { |
|
75 | 3 | throw new Exception('Invalid data.', 68); |
|
76 | } |
||
77 | |||
78 | // Check for improbable collision. |
||
79 | 10 | if ($this->exists()) { |
|
80 | 3 | throw new Exception('You are unlucky. Try again.', 69); |
|
81 | } |
||
82 | |||
83 | 8 | $this->_data->meta->postdate = time(); |
|
84 | |||
85 | // store comment |
||
86 | if ( |
||
87 | 8 | $this->_store->createComment( |
|
88 | 8 | $pasteid, |
|
89 | 8 | $this->getParentId(), |
|
90 | 8 | $this->getId(), |
|
91 | 8 | json_decode(json_encode($this->_data), true) |
|
92 | 8 | ) === false |
|
93 | ) { |
||
94 | throw new Exception('Error saving comment. Sorry.', 70); |
||
95 | } |
||
96 | 8 | } |
|
97 | |||
98 | /** |
||
99 | * Delete the comment. |
||
100 | * |
||
101 | * @access public |
||
102 | * @throws Exception |
||
103 | */ |
||
104 | 1 | public function delete() |
|
105 | { |
||
106 | 1 | throw new Exception('To delete a comment, delete its parent paste', 64); |
|
107 | } |
||
108 | |||
109 | /** |
||
110 | * Test if comment exists in store. |
||
111 | * |
||
112 | * @access public |
||
113 | * @return bool |
||
114 | */ |
||
115 | 10 | public function exists() |
|
116 | { |
||
117 | 10 | return $this->_store->existsComment( |
|
118 | 10 | $this->getPaste()->getId(), |
|
119 | 10 | $this->getParentId(), |
|
120 | 10 | $this->getId() |
|
121 | ); |
||
122 | } |
||
123 | |||
124 | /** |
||
125 | * Set paste. |
||
126 | * |
||
127 | * @access public |
||
128 | * @param Paste $paste |
||
129 | * @throws Exception |
||
130 | */ |
||
131 | 19 | public function setPaste(Paste $paste) |
|
132 | { |
||
133 | 19 | $this->_paste = $paste; |
|
134 | 19 | $this->_data->meta->pasteid = $paste->getId(); |
|
135 | 19 | } |
|
136 | |||
137 | /** |
||
138 | * Get paste. |
||
139 | * |
||
140 | * @access public |
||
141 | * @return Paste |
||
142 | */ |
||
143 | 14 | public function getPaste() |
|
144 | { |
||
145 | 14 | return $this->_paste; |
|
146 | } |
||
147 | |||
148 | /** |
||
149 | * Set parent ID. |
||
150 | * |
||
151 | * @access public |
||
152 | * @param string $id |
||
153 | * @throws Exception |
||
154 | */ |
||
155 | 19 | public function setParentId($id) |
|
156 | { |
||
157 | 19 | if (!self::isValidId($id)) { |
|
158 | 2 | throw new Exception('Invalid paste ID.', 65); |
|
159 | } |
||
160 | 17 | $this->_data->meta->parentid = $id; |
|
161 | 17 | } |
|
162 | |||
163 | /** |
||
164 | * Get parent ID. |
||
165 | * |
||
166 | * @access public |
||
167 | * @return string |
||
168 | */ |
||
169 | 10 | public function getParentId() |
|
170 | { |
||
171 | 10 | if (!property_exists($this->_data->meta, 'parentid')) { |
|
172 | $this->_data->meta->parentid = ''; |
||
173 | } |
||
174 | 10 | return $this->_data->meta->parentid; |
|
175 | } |
||
176 | |||
177 | /** |
||
178 | * Set nickname. |
||
179 | * |
||
180 | * @access public |
||
181 | * @param string $nickname |
||
182 | * @throws Exception |
||
183 | */ |
||
184 | 14 | public function setNickname($nickname) |
|
185 | { |
||
186 | 14 | if (!Sjcl::isValid($nickname)) { |
|
187 | 2 | throw new Exception('Invalid data.', 66); |
|
188 | } |
||
189 | 12 | $this->_data->meta->nickname = $nickname; |
|
190 | |||
191 | // If a nickname is provided, we generate an icon based on a SHA512 HMAC |
||
192 | // of the users IP. (We assume that if the user did not enter a nickname, |
||
193 | // the user wants to be anonymous and we will not generate an icon.) |
||
194 | 12 | $icon = $this->_conf->getKey('icon'); |
|
195 | 12 | if ($icon != 'none') { |
|
196 | 11 | $pngdata = ''; |
|
197 | 11 | $hmac = TrafficLimiter::getHash(); |
|
198 | 11 | if ($icon == 'identicon') { |
|
199 | 10 | $identicon = new Identicon(); |
|
200 | 10 | $pngdata = $identicon->getImageDataUri($hmac, 16); |
|
201 | 1 | } elseif ($icon == 'vizhash') { |
|
202 | 1 | $vh = new Vizhash16x16(); |
|
203 | 1 | $pngdata = 'data:image/png;base64,' . base64_encode( |
|
204 | 1 | $vh->generate($hmac) |
|
205 | ); |
||
206 | } |
||
207 | 11 | if ($pngdata != '') { |
|
208 | 11 | $this->_data->meta->vizhash = $pngdata; |
|
209 | } |
||
210 | } |
||
211 | // Once the icon is generated, we do not keep the IP address hash. |
||
212 | 12 | } |
|
213 | } |
||
214 |