├── DiffBlocker.php
├── i18n
    └── en.json
├── extension.json
└── SpecialAllowAnonDiffViewing.php


/DiffBlocker.php:
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 1 | <?php
 2 | class DiffBlocker {
 3 | 	public static function ongetUserPermissionsErrors( $title, $user, $action, &$result ) {
 4 | 		global $wgRequest;
 5 | 				
 6 | 		if (!empty($wgRequest->getQueryValues()['oldid']) && $user->isAnon() && !$wgRequest->getSession()->exists('anondiffs')) {
 7 | 			$result = ['diffblocker-login-required'];
 8 | 			
 9 | 			return false;
10 | 		}
11 | 	}
12 | }


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/i18n/en.json:
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1 | {
2 | 	"diffblocker-login-required": "Please confirm you are a human to view differences between revisions by going to [[Special:AllowAnonDiffViewing|this form]].",
3 | 	"diffblocker-anon-diff-form-content": "Click the \"Allow\" button below to allow viewing differences between revisions.",
4 | 	"diffblocker-anon-diff-success": "Success! You can now view differences between revisions.",
5 | 	"allowanondiffviewing": "Allow Anonymous Diff Viewing"
6 | }


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/extension.json:
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 1 | {
 2 | 	"manifest_version": 1,
 3 | 	"name": "DiffBlocker",
 4 | 	"author": ["Jacob G. (jvvg)"],
 5 | 	"AutoloadClasses": {
 6 | 		"DiffBlocker": "DiffBlocker.php",
 7 | 		"SpecialAllowAnonDiffViewing": "SpecialAllowAnonDiffViewing.php"
 8 | 	},
 9 | 	"HookHandlers": {
10 |         "main": {
11 |             "class": "DiffBlocker",
12 |             "services": [ ]
13 |         }
14 |     },
15 | 	"SpecialPages": {
16 | 		"AllowAnonDiffViewing": {
17 | 			"class": "SpecialAllowAnonDiffViewing"
18 | 		}
19 | 	},
20 | 	"Hooks": {
21 | 		"getUserPermissionsErrors": "main"
22 | 	},
23 | 	"MessagesDirs": {
24 | 		"DiffBlocker": [
25 | 			"i18n"
26 | 		]
27 | 	},
28 | 	"manifest_version": 1
29 | }


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/SpecialAllowAnonDiffViewing.php:
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 1 | <?php
 2 | class SpecialAllowAnonDiffViewing extends SpecialPage {
 3 | 	function __construct() {
 4 | 		parent::__construct('AllowAnonDiffViewing');
 5 | 	}
 6 | 	
 7 | 	function getGroupName() {
 8 | 		return '';
 9 | 	}
10 | 	
11 | 	function showForm() {
12 | 		$this->getOutput()->addHTML(Html::openElement('form', ['method' => 'post', $this->getPageTitle()->getLocalUrl()]));
13 | 		
14 | 		$this->getOutput()->addHTML(
15 | 			Html::rawElement(
16 | 				'div',
17 | 				[],
18 | 				$this->msg('diffblocker-anon-diff-form-content')->parse()
19 | 			)
20 | 		);
21 | 		
22 | 		$this->getOutput()->addHTML(
23 | 			Html::element('button', ['type' => 'submit'], 'Allow')
24 | 		);
25 | 				
26 | 		$this->getOutput()->addHTML(Html::closeElement('form'));
27 | 	}
28 | 	
29 | 	function handlePost() {
30 | 		$this->getRequest()->getSession()->persist();
31 | 		$this->getRequest()->getSession()->set('anondiffs', 'true');
32 | 		
33 | 		$this->getOutput()->addHTML($this->msg('diffblocker-anon-diff-success')->parse());
34 | 	}
35 | 	
36 | 	function execute($par) {
37 | 		$this->getOutput()->setPageTitle( $this->msg( "allowanondiffviewing" )->escaped() );
38 | 		
39 | 		if ($this->getRequest()->wasPosted()) {
40 | 			$this->handlePost();
41 | 		} else {
42 | 			$this->showForm();
43 | 		}
44 | 	}
45 | }


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