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1 | <?php |
2 | /** |
3 | * This program is free software; you can redistribute it and/or modify |
4 | * it under the terms of the GNU General Public License as published by |
5 | * the Free Software Foundation; either version 2 of the License, or |
6 | * (at your option) any later version. |
7 | * |
8 | * This program is distributed in the hope that it will be useful, |
9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
11 | * GNU General Public License for more details. |
12 | * |
13 | * You should have received a copy of the GNU General Public License along |
14 | * with this program; if not, write to the Free Software Foundation, Inc., |
15 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. |
16 | * http://www.gnu.org/copyleft/gpl.html |
17 | * |
18 | * @file |
19 | */ |
20 | |
21 | namespace MediaWiki\EditPage\Constraint; |
22 | |
23 | use MediaWiki\Content\Content; |
24 | use StatusValue; |
25 | |
26 | /** |
27 | * To simplify the logic in EditPage, this constraint may be created even if the section being |
28 | * edited does not currently exist, in which case $section will be 'new' and this constraint |
29 | * will just short-circuit to CONSTRAINT_PASSED since the checks are not applicable. |
30 | * |
31 | * This constraint will only be used if the editor is trying to edit an existing page; if there |
32 | * is no content, then the user has lost access to the revision after it was loaded. (T301947) |
33 | * |
34 | * For an edit to an existing page but not with a new section, do not allow the user to post with |
35 | * a summary that matches the automatic summary if |
36 | * - the content has changed (to allow null edits without a summary, see T7365), |
37 | * - the new content is not a redirect (since redirecting a page has an informative automatic |
38 | * edit summary, see T9889), and |
39 | * - the user has not explicitly chosen to allow the automatic summary to be used |
40 | * |
41 | * For most edits, the automatic summary is blank, so checking against the automatic summary means |
42 | * checking that any summary was given. |
43 | * |
44 | * @since 1.36 |
45 | * @internal |
46 | * @author DannyS712 |
47 | */ |
48 | class ExistingSectionEditConstraint implements IEditConstraint { |
49 | |
50 | private string $section; |
51 | private string $userSummary; |
52 | private string $autoSummary; |
53 | private bool $allowBlankSummary; |
54 | private Content $newContent; |
55 | private ?Content $originalContent; |
56 | private string $result; |
57 | |
58 | /** |
59 | * @param string $section |
60 | * @param string $userSummary |
61 | * @param string $autoSummary |
62 | * @param bool $allowBlankSummary |
63 | * @param Content $newContent |
64 | * @param ?Content $originalContent |
65 | */ |
66 | public function __construct( |
67 | string $section, |
68 | string $userSummary, |
69 | string $autoSummary, |
70 | bool $allowBlankSummary, |
71 | Content $newContent, |
72 | ?Content $originalContent |
73 | ) { |
74 | $this->section = $section; |
75 | $this->userSummary = $userSummary; |
76 | $this->autoSummary = $autoSummary; |
77 | $this->allowBlankSummary = $allowBlankSummary; |
78 | $this->newContent = $newContent; |
79 | $this->originalContent = $originalContent; |
80 | } |
81 | |
82 | public function checkConstraint(): string { |
83 | if ( $this->section === 'new' ) { |
84 | // Constraint is not applicable |
85 | $this->result = self::CONSTRAINT_PASSED; |
86 | return self::CONSTRAINT_PASSED; |
87 | } |
88 | if ( $this->originalContent === null ) { |
89 | // T301947: User loses access to revision after loading |
90 | $this->result = self::CONSTRAINT_FAILED; |
91 | return self::CONSTRAINT_FAILED; |
92 | } |
93 | if ( |
94 | !$this->allowBlankSummary && |
95 | !$this->newContent->equals( $this->originalContent ) && |
96 | !$this->newContent->isRedirect() && |
97 | md5( $this->userSummary ) === $this->autoSummary |
98 | ) { |
99 | $this->result = self::CONSTRAINT_FAILED; |
100 | } else { |
101 | $this->result = self::CONSTRAINT_PASSED; |
102 | } |
103 | return $this->result; |
104 | } |
105 | |
106 | public function getLegacyStatus(): StatusValue { |
107 | $statusValue = StatusValue::newGood(); |
108 | if ( $this->result === self::CONSTRAINT_FAILED ) { |
109 | if ( $this->originalContent === null ) { |
110 | // T301947: User loses access to revision after loading |
111 | // The error message, rev-deleted-text-permission, is not |
112 | // really in use currently. It's added for completeness and in |
113 | // case any code path wants to know the error. |
114 | $statusValue->fatal( 'rev-deleted-text-permission' ); |
115 | $statusValue->value = self::AS_REVISION_WAS_DELETED; |
116 | } else { |
117 | $statusValue->fatal( 'missingsummary' ); |
118 | $statusValue->value = self::AS_SUMMARY_NEEDED; |
119 | } |
120 | } |
121 | return $statusValue; |
122 | } |
123 | |
124 | } |