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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
21namespace MediaWiki\Specials;
22
23use LogEventsList;
24use MediaWiki\Block\Block;
25use MediaWiki\Block\BlockUtils;
26use MediaWiki\Block\DatabaseBlock;
27use MediaWiki\Block\DatabaseBlockStore;
28use MediaWiki\Block\UnblockUserFactory;
29use MediaWiki\HTMLForm\HTMLForm;
30use MediaWiki\Request\WebRequest;
31use MediaWiki\SpecialPage\SpecialPage;
32use MediaWiki\Title\Title;
33use MediaWiki\Title\TitleValue;
34use MediaWiki\User\UserIdentity;
35use MediaWiki\User\UserNamePrefixSearch;
36use MediaWiki\User\UserNameUtils;
37use MediaWiki\Watchlist\WatchlistManager;
38use Wikimedia\IPUtils;
39
40/**
41 * A special page for unblocking users
42 *
43 * @ingroup SpecialPage
44 */
45class SpecialUnblock extends SpecialPage {
46
47    /** @var UserIdentity|string|null */
48    protected $target;
49
50    /** @var int|null Block::TYPE_ constant */
51    protected $type;
52
53    /** @var DatabaseBlock|null */
54    protected $block;
55
56    private UnblockUserFactory $unblockUserFactory;
57    private BlockUtils $blockUtils;
58    private DatabaseBlockStore $blockStore;
59    private UserNameUtils $userNameUtils;
60    private UserNamePrefixSearch $userNamePrefixSearch;
61    private WatchlistManager $watchlistManager;
62
63    /**
64     * @param UnblockUserFactory $unblockUserFactory
65     * @param BlockUtils $blockUtils
66     * @param DatabaseBlockStore $blockStore
67     * @param UserNameUtils $userNameUtils
68     * @param UserNamePrefixSearch $userNamePrefixSearch
69     * @param WatchlistManager $watchlistManager
70     */
71    public function __construct(
72        UnblockUserFactory $unblockUserFactory,
73        BlockUtils $blockUtils,
74        DatabaseBlockStore $blockStore,
75        UserNameUtils $userNameUtils,
76        UserNamePrefixSearch $userNamePrefixSearch,
77        WatchlistManager $watchlistManager
78    ) {
79        parent::__construct( 'Unblock', 'block' );
80        $this->unblockUserFactory = $unblockUserFactory;
81        $this->blockUtils = $blockUtils;
82        $this->blockStore = $blockStore;
83        $this->userNameUtils = $userNameUtils;
84        $this->userNamePrefixSearch = $userNamePrefixSearch;
85        $this->watchlistManager = $watchlistManager;
86    }
87
88    public function doesWrites() {
89        return true;
90    }
91
92    public function execute( $par ) {
93        $this->checkPermissions();
94        $this->checkReadOnly();
95
96        [ $this->target, $this->type ] = $this->getTargetAndType( $par, $this->getRequest() );
97        $this->block = $this->blockStore->newFromTarget( $this->target );
98        if ( $this->target instanceof UserIdentity ) {
99            // Set the 'relevant user' in the skin, so it displays links like Contributions,
100            // User logs, UserRights, etc.
101            $this->getSkin()->setRelevantUser( $this->target );
102        }
103
104        $this->setHeaders();
105        $this->outputHeader();
106        $this->addHelpLink( 'Help:Blocking users' );
107
108        $out = $this->getOutput();
109        $out->setPageTitleMsg( $this->msg( 'unblockip' ) );
110        $out->addModules( [ 'mediawiki.userSuggest', 'mediawiki.special.block' ] );
111
112        $form = HTMLForm::factory( 'ooui', $this->getFields(), $this->getContext() )
113            ->setWrapperLegendMsg( 'unblockip' )
114            ->setSubmitCallback( function ( array $data, HTMLForm $form ) {
115                if ( $this->type != Block::TYPE_RANGE
116                    && $this->type != Block::TYPE_AUTO
117                    && $data['Watch']
118                ) {
119                    $this->watchlistManager->addWatchIgnoringRights(
120                        $form->getUser(),
121                        Title::makeTitle( NS_USER, $this->target )
122                    );
123                }
124                return $this->unblockUserFactory->newUnblockUser(
125                    $data['Target'],
126                    $form->getContext()->getAuthority(),
127                    $data['Reason'],
128                    $data['Tags'] ?? []
129                )->unblock();
130            } )
131            ->setSubmitTextMsg( 'ipusubmit' )
132            ->addPreHtml( $this->msg( 'unblockiptext' )->parseAsBlock() );
133
134        $userPage = $this->getTargetUserTitle( $this->target );
135        if ( $userPage ) {
136            // Get relevant extracts from the block and suppression logs, if possible
137            $logExtract = '';
138            LogEventsList::showLogExtract(
139                $logExtract,
140                'block',
141                $userPage,
142                '',
143                [
144                    'lim' => 10,
145                    'msgKey' => [
146                        'unblocklog-showlog',
147                        $userPage->getText(),
148                    ],
149                    'showIfEmpty' => false
150                ]
151            );
152            if ( $logExtract !== '' ) {
153                $form->addPostHtml( $logExtract );
154            }
155
156            // Add suppression block entries if allowed
157            if ( $this->getAuthority()->isAllowed( 'suppressionlog' ) ) {
158                $logExtract = '';
159                LogEventsList::showLogExtract(
160                    $logExtract,
161                    'suppress',
162                    $userPage,
163                    '',
164                    [
165                        'lim' => 10,
166                        'conds' => [ 'log_action' => [ 'block', 'reblock', 'unblock' ] ],
167                        'msgKey' => [
168                            'unblocklog-showsuppresslog',
169                            $userPage->getText(),
170                        ],
171                        'showIfEmpty' => false
172                    ]
173                );
174                if ( $logExtract !== '' ) {
175                    $form->addPostHtml( $logExtract );
176                }
177            }
178        }
179
180        if ( $form->show() ) {
181            switch ( $this->type ) {
182                case Block::TYPE_IP:
183                    $out->addWikiMsg( 'unblocked-ip', wfEscapeWikiText( $this->target ) );
184                    break;
185                case Block::TYPE_USER:
186                    $out->addWikiMsg( 'unblocked', wfEscapeWikiText( $this->target ) );
187                    break;
188                case Block::TYPE_RANGE:
189                    $out->addWikiMsg( 'unblocked-range', wfEscapeWikiText( $this->target ) );
190                    break;
191                case Block::TYPE_ID:
192                case Block::TYPE_AUTO:
193                    $out->addWikiMsg( 'unblocked-id', wfEscapeWikiText( $this->target ) );
194                    break;
195            }
196        }
197    }
198
199    /**
200     * Get the target and type, given the request and the subpage parameter.
201     * Several parameters are handled for backwards compatability. 'wpTarget' is
202     * prioritized, since it matches the HTML form.
203     *
204     * @param string|null $par Subpage parameter
205     * @param WebRequest $request
206     * @return array [ UserIdentity|string|null, DatabaseBlock::TYPE_ constant|null ]
207     * @phan-return array{0:UserIdentity|string|null,1:int|null}
208     */
209    private function getTargetAndType( ?string $par, WebRequest $request ) {
210        $possibleTargets = [
211            $request->getVal( 'wpTarget', null ),
212            $par,
213            $request->getVal( 'ip', null ),
214            // B/C @since 1.18
215            $request->getVal( 'wpBlockAddress', null ),
216        ];
217        foreach ( $possibleTargets as $possibleTarget ) {
218            $targetAndType = $this->blockUtils->parseBlockTarget( $possibleTarget );
219            // If type is not null then target is valid
220            if ( $targetAndType[ 1 ] !== null ) {
221                break;
222            }
223        }
224        return $targetAndType;
225    }
226
227    /**
228     * Get a user page target for things like logs.
229     * This handles account and IP range targets.
230     * @param UserIdentity|string|null $target
231     * @return Title|null
232     */
233    private function getTargetUserTitle( $target ): ?Title {
234        if ( $target instanceof UserIdentity ) {
235            return Title::makeTitle( NS_USER, $target->getName() );
236        }
237
238        if ( is_string( $target ) && IPUtils::isIPAddress( $target ) ) {
239            return Title::makeTitle( NS_USER, $target );
240        }
241
242        return null;
243    }
244
245    protected function getFields() {
246        $fields = [
247            'Target' => [
248                'type' => 'text',
249                'label-message' => 'ipaddressorusername',
250                'autofocus' => true,
251                'size' => '45',
252                'required' => true,
253                'cssclass' => 'mw-autocomplete-user', // used by mediawiki.userSuggest
254            ],
255            'Name' => [
256                'type' => 'info',
257                'label-message' => 'ipaddressorusername',
258            ],
259            'Reason' => [
260                'type' => 'text',
261                'label-message' => 'ipbreason',
262            ]
263        ];
264
265        if ( $this->block instanceof Block ) {
266            $type = $this->block->getType();
267            $targetName = $this->block->getTargetName();
268
269            // Autoblocks are logged as "autoblock #123 because the IP was recently used by
270            // User:Foo, and we've just got any block, auto or not, that applies to a target
271            // the user has specified.  Someone could be fishing to connect IPs to autoblocks,
272            // so don't show any distinction between unblocked IPs and autoblocked IPs
273            if ( $type == Block::TYPE_AUTO && $this->type == Block::TYPE_IP ) {
274                $fields['Target']['default'] = $this->target;
275                unset( $fields['Name'] );
276            } else {
277                $fields['Target']['default'] = $targetName;
278                $fields['Target']['type'] = 'hidden';
279                switch ( $type ) {
280                    case Block::TYPE_IP:
281                        $fields['Name']['default'] = $this->getLinkRenderer()->makeKnownLink(
282                            $this->getSpecialPageFactory()->getTitleForAlias( 'Contributions/' . $targetName ),
283                            $targetName
284                        );
285                        $fields['Name']['raw'] = true;
286                        break;
287                    case Block::TYPE_USER:
288                        $fields['Name']['default'] = $this->getLinkRenderer()->makeLink(
289                            new TitleValue( NS_USER, $targetName ),
290                            $targetName
291                        );
292                        $fields['Name']['raw'] = true;
293                        break;
294
295                    case Block::TYPE_RANGE:
296                        $fields['Name']['default'] = $targetName;
297                        break;
298
299                    case Block::TYPE_AUTO:
300                        $fields['Name']['default'] = $this->block->getRedactedName();
301                        $fields['Name']['raw'] = true;
302                        // Don't expose the real target of the autoblock
303                        $fields['Target']['default'] = "#{$this->target}";
304                        break;
305                }
306                // Target is hidden, so the reason is the first element
307                $fields['Target']['autofocus'] = false;
308                $fields['Reason']['autofocus'] = true;
309            }
310        } else {
311            $fields['Target']['default'] = $this->target;
312            unset( $fields['Name'] );
313        }
314        // Watchlist their user page? (Only if user is logged in)
315        if ( $this->getUser()->isRegistered() ) {
316            $fields['Watch'] = [
317                'type' => 'check',
318                'label-message' => 'ipbwatchuser',
319            ];
320        }
321
322        return $fields;
323    }
324
325    /**
326     * Return an array of subpages beginning with $search that this special page will accept.
327     *
328     * @param string $search Prefix to search for
329     * @param int $limit Maximum number of results to return (usually 10)
330     * @param int $offset Number of results to skip (usually 0)
331     * @return string[] Matching subpages
332     */
333    public function prefixSearchSubpages( $search, $limit, $offset ) {
334        $search = $this->userNameUtils->getCanonical( $search );
335        if ( !$search ) {
336            // No prefix suggestion for invalid user
337            return [];
338        }
339        // Autocomplete subpage as user list - public to allow caching
340        return $this->userNamePrefixSearch
341            ->search( UserNamePrefixSearch::AUDIENCE_PUBLIC, $search, $limit, $offset );
342    }
343
344    protected function getGroupName() {
345        return 'users';
346    }
347}
348
349/**
350 * Retain the old class name for backwards compatibility.
351 * @deprecated since 1.41
352 */
353class_alias( SpecialUnblock::class, 'SpecialUnblock' );